diff options
Diffstat (limited to 'drivers/scsi/megaraid')
| -rw-r--r-- | drivers/scsi/megaraid/Kconfig.megaraid | 85 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/Makefile | 5 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/mbox_defs.h | 790 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/mega_common.h | 290 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_ioctl.h | 300 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_mbox.c | 4173 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_mbox.h | 238 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_mm.c | 1261 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_mm.h | 101 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.h | 1492 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_base.c | 5487 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fp.c | 526 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.c | 2358 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.h | 706 |
14 files changed, 17812 insertions, 0 deletions
diff --git a/drivers/scsi/megaraid/Kconfig.megaraid b/drivers/scsi/megaraid/Kconfig.megaraid new file mode 100644 index 00000000..17419e30 --- /dev/null +++ b/drivers/scsi/megaraid/Kconfig.megaraid @@ -0,0 +1,85 @@ +config MEGARAID_NEWGEN + bool "LSI Logic New Generation RAID Device Drivers" + depends on PCI && SCSI + help + LSI Logic RAID Device Drivers + +config MEGARAID_MM + tristate "LSI Logic Management Module (New Driver)" + depends on PCI && SCSI && MEGARAID_NEWGEN + help + Management Module provides ioctl, sysfs support for LSI Logic + RAID controllers. + To compile this driver as a module, choose M here: the + module will be called megaraid_mm + + +config MEGARAID_MAILBOX + tristate "LSI Logic MegaRAID Driver (New Driver)" + depends on PCI && SCSI && MEGARAID_MM + help + List of supported controllers + + OEM Product Name VID :DID :SVID:SSID + --- ------------ ---- ---- ---- ---- + Dell PERC3/QC 101E:1960:1028:0471 + Dell PERC3/DC 101E:1960:1028:0493 + Dell PERC3/SC 101E:1960:1028:0475 + Dell PERC3/Di 1028:000E:1028:0123 + Dell PERC4/SC 1000:1960:1028:0520 + Dell PERC4/DC 1000:1960:1028:0518 + Dell PERC4/QC 1000:0407:1028:0531 + Dell PERC4/Di 1028:000F:1028:014A + Dell PERC 4e/Si 1028:0013:1028:016c + Dell PERC 4e/Di 1028:0013:1028:016d + Dell PERC 4e/Di 1028:0013:1028:016e + Dell PERC 4e/Di 1028:0013:1028:016f + Dell PERC 4e/Di 1028:0013:1028:0170 + Dell PERC 4e/DC 1000:0408:1028:0002 + Dell PERC 4e/SC 1000:0408:1028:0001 + LSI MegaRAID SCSI 320-0 1000:1960:1000:A520 + LSI MegaRAID SCSI 320-1 1000:1960:1000:0520 + LSI MegaRAID SCSI 320-2 1000:1960:1000:0518 + LSI MegaRAID SCSI 320-0X 1000:0407:1000:0530 + LSI MegaRAID SCSI 320-2X 1000:0407:1000:0532 + LSI MegaRAID SCSI 320-4X 1000:0407:1000:0531 + LSI MegaRAID SCSI 320-1E 1000:0408:1000:0001 + LSI MegaRAID SCSI 320-2E 1000:0408:1000:0002 + LSI MegaRAID SATA 150-4 1000:1960:1000:4523 + LSI MegaRAID SATA 150-6 1000:1960:1000:0523 + LSI MegaRAID SATA 300-4X 1000:0409:1000:3004 + LSI MegaRAID SATA 300-8X 1000:0409:1000:3008 + INTEL RAID Controller SRCU42X 1000:0407:8086:0532 + INTEL RAID Controller SRCS16 1000:1960:8086:0523 + INTEL RAID Controller SRCU42E 1000:0408:8086:0002 + INTEL RAID Controller SRCZCRX 1000:0407:8086:0530 + INTEL RAID Controller SRCS28X 1000:0409:8086:3008 + INTEL RAID Controller SROMBU42E 1000:0408:8086:3431 + INTEL RAID Controller SROMBU42E 1000:0408:8086:3499 + INTEL RAID Controller SRCU51L 1000:1960:8086:0520 + FSC MegaRAID PCI Express ROMB 1000:0408:1734:1065 + ACER MegaRAID ROMB-2E 1000:0408:1025:004D + NEC MegaRAID PCI Express ROMB 1000:0408:1033:8287 + + To compile this driver as a module, choose M here: the + module will be called megaraid_mbox + +config MEGARAID_LEGACY + tristate "LSI Logic Legacy MegaRAID Driver" + depends on PCI && SCSI + help + This driver supports the LSI MegaRAID 418, 428, 438, 466, 762, 490 + and 467 SCSI host adapters. This driver also support the all U320 + RAID controllers + + To compile this driver as a module, choose M here: the + module will be called megaraid + +config MEGARAID_SAS + tristate "LSI Logic MegaRAID SAS RAID Module" + depends on PCI && SCSI + help + Module for LSI Logic's SAS based RAID controllers. + To compile this driver as a module, choose 'm' here. + Module will be called megaraid_sas + diff --git a/drivers/scsi/megaraid/Makefile b/drivers/scsi/megaraid/Makefile new file mode 100644 index 00000000..5826ed50 --- /dev/null +++ b/drivers/scsi/megaraid/Makefile @@ -0,0 +1,5 @@ +obj-$(CONFIG_MEGARAID_MM) += megaraid_mm.o +obj-$(CONFIG_MEGARAID_MAILBOX) += megaraid_mbox.o +obj-$(CONFIG_MEGARAID_SAS) += megaraid_sas.o +megaraid_sas-objs := megaraid_sas_base.o megaraid_sas_fusion.o \ + megaraid_sas_fp.o diff --git a/drivers/scsi/megaraid/mbox_defs.h b/drivers/scsi/megaraid/mbox_defs.h new file mode 100644 index 00000000..e01c6f7c --- /dev/null +++ b/drivers/scsi/megaraid/mbox_defs.h @@ -0,0 +1,790 @@ +/* + * + * Linux MegaRAID Unified device driver + * + * Copyright (c) 2003-2004 LSI Logic Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * FILE : mbox_defs.h + * + */ +#ifndef _MRAID_MBOX_DEFS_H_ +#define _MRAID_MBOX_DEFS_H_ + +#include <linux/types.h> + +/* + * Commands and states for mailbox based controllers + */ + +#define MBOXCMD_LREAD 0x01 +#define MBOXCMD_LWRITE 0x02 +#define MBOXCMD_PASSTHRU 0x03 +#define MBOXCMD_ADPEXTINQ 0x04 +#define MBOXCMD_ADAPTERINQ 0x05 +#define MBOXCMD_LREAD64 0xA7 +#define MBOXCMD_LWRITE64 0xA8 +#define MBOXCMD_PASSTHRU64 0xC3 +#define MBOXCMD_EXTPTHRU 0xE3 + +#define MAIN_MISC_OPCODE 0xA4 +#define GET_MAX_SG_SUPPORT 0x01 +#define SUPPORT_EXT_CDB 0x16 + +#define FC_NEW_CONFIG 0xA1 +#define NC_SUBOP_PRODUCT_INFO 0x0E +#define NC_SUBOP_ENQUIRY3 0x0F +#define ENQ3_GET_SOLICITED_FULL 0x02 +#define OP_DCMD_READ_CONFIG 0x04 +#define NEW_READ_CONFIG_8LD 0x67 +#define READ_CONFIG_8LD 0x07 +#define FLUSH_ADAPTER 0x0A +#define FLUSH_SYSTEM 0xFE + +/* + * Command for random deletion of logical drives + */ +#define FC_DEL_LOGDRV 0xA4 +#define OP_SUP_DEL_LOGDRV 0x2A +#define OP_GET_LDID_MAP 0x18 +#define OP_DEL_LOGDRV 0x1C + +/* + * BIOS commands + */ +#define IS_BIOS_ENABLED 0x62 +#define GET_BIOS 0x01 +#define CHNL_CLASS 0xA9 +#define GET_CHNL_CLASS 0x00 +#define SET_CHNL_CLASS 0x01 +#define CH_RAID 0x01 +#define CH_SCSI 0x00 +#define BIOS_PVT_DATA 0x40 +#define GET_BIOS_PVT_DATA 0x00 + + +/* + * Commands to support clustering + */ +#define GET_TARGET_ID 0x7D +#define CLUSTER_OP 0x70 +#define GET_CLUSTER_MODE 0x02 +#define CLUSTER_CMD 0x6E +#define RESERVE_LD 0x01 +#define RELEASE_LD 0x02 +#define RESET_RESERVATIONS 0x03 +#define RESERVATION_STATUS 0x04 +#define RESERVE_PD 0x05 +#define RELEASE_PD 0x06 + + +/* + * Module battery status + */ +#define BATTERY_MODULE_MISSING 0x01 +#define BATTERY_LOW_VOLTAGE 0x02 +#define BATTERY_TEMP_HIGH 0x04 +#define BATTERY_PACK_MISSING 0x08 +#define BATTERY_CHARGE_MASK 0x30 +#define BATTERY_CHARGE_DONE 0x00 +#define BATTERY_CHARGE_INPROG 0x10 +#define BATTERY_CHARGE_FAIL 0x20 +#define BATTERY_CYCLES_EXCEEDED 0x40 + +/* + * Physical drive states. + */ +#define PDRV_UNCNF 0 +#define PDRV_ONLINE 3 +#define PDRV_FAILED 4 +#define PDRV_RBLD 5 +#define PDRV_HOTSPARE 6 + + +/* + * Raid logical drive states. + */ +#define RDRV_OFFLINE 0 +#define RDRV_DEGRADED 1 +#define RDRV_OPTIMAL 2 +#define RDRV_DELETED 3 + +/* + * Read, write and cache policies + */ +#define NO_READ_AHEAD 0 +#define READ_AHEAD 1 +#define ADAP_READ_AHEAD 2 +#define WRMODE_WRITE_THRU 0 +#define WRMODE_WRITE_BACK 1 +#define CACHED_IO 0 +#define DIRECT_IO 1 + +#define MAX_LOGICAL_DRIVES_8LD 8 +#define MAX_LOGICAL_DRIVES_40LD 40 +#define FC_MAX_PHYSICAL_DEVICES 256 +#define MAX_MBOX_CHANNELS 5 +#define MAX_MBOX_TARGET 15 +#define MBOX_MAX_PHYSICAL_DRIVES MAX_MBOX_CHANNELS*MAX_MBOX_TARGET +#define MAX_ROW_SIZE_40LD 32 +#define MAX_ROW_SIZE_8LD 8 +#define SPAN_DEPTH_8_SPANS 8 +#define SPAN_DEPTH_4_SPANS 4 +#define MAX_REQ_SENSE_LEN 0x20 + + + +/** + * struct mbox_t - Driver and f/w handshake structure. + * @cmd : firmware command + * @cmdid : command id + * @numsectors : number of sectors to be transferred + * @lba : Logical Block Address on LD + * @xferaddr : DMA address for data transfer + * @logdrv : logical drive number + * @numsge : number of scatter gather elements in sg list + * @resvd : reserved + * @busy : f/w busy, must wait to issue more commands. + * @numstatus : number of commands completed. + * @status : status of the commands completed + * @completed : array of completed command ids. + * @poll : poll and ack sequence + * @ack : poll and ack sequence + * + * The central handshake structure between the driver and the firmware. This + * structure must be allocated by the driver and aligned at 8-byte boundary. + */ +#define MBOX_MAX_FIRMWARE_STATUS 46 +typedef struct { + uint8_t cmd; + uint8_t cmdid; + uint16_t numsectors; + uint32_t lba; + uint32_t xferaddr; + uint8_t logdrv; + uint8_t numsge; + uint8_t resvd; + uint8_t busy; + uint8_t numstatus; + uint8_t status; + uint8_t completed[MBOX_MAX_FIRMWARE_STATUS]; + uint8_t poll; + uint8_t ack; +} __attribute__ ((packed)) mbox_t; + + +/** + * mbox64_t - 64-bit extension for the mailbox + * @segment_lo : the low 32-bits of the address of the scatter-gather list + * @segment_hi : the upper 32-bits of the address of the scatter-gather list + * @mbox : 32-bit mailbox, whose xferadder field must be set to + * 0xFFFFFFFF + * + * This is the extension of the 32-bit mailbox to be able to perform DMA + * beyond 4GB address range. + */ +typedef struct { + uint32_t xferaddr_lo; + uint32_t xferaddr_hi; + mbox_t mbox32; +} __attribute__ ((packed)) mbox64_t; + +/* + * mailbox structure used for internal commands + */ +typedef struct { + u8 cmd; + u8 cmdid; + u8 opcode; + u8 subopcode; + u32 lba; + u32 xferaddr; + u8 logdrv; + u8 rsvd[3]; + u8 numstatus; + u8 status; +} __attribute__ ((packed)) int_mbox_t; + +/** + * mraid_passthru_t - passthru structure to issue commands to physical devices + * @timeout : command timeout, 0=6sec, 1=60sec, 2=10min, 3=3hr + * @ars : set if ARS required after check condition + * @islogical : set if command meant for logical devices + * @logdrv : logical drive number if command for LD + * @channel : Channel on which physical device is located + * @target : SCSI target of the device + * @queuetag : unused + * @queueaction : unused + * @cdb : SCSI CDB + * @cdblen : length of the CDB + * @reqsenselen : amount of request sense data to be returned + * @reqsensearea : Sense information buffer + * @numsge : number of scatter-gather elements in the sg list + * @scsistatus : SCSI status of the command completed. + * @dataxferaddr : DMA data transfer address + * @dataxferlen : amount of the data to be transferred. + */ +typedef struct { + uint8_t timeout :3; + uint8_t ars :1; + uint8_t reserved :3; + uint8_t islogical :1; + uint8_t logdrv; + uint8_t channel; + uint8_t target; + uint8_t queuetag; + uint8_t queueaction; + uint8_t cdb[10]; + uint8_t cdblen; + uint8_t reqsenselen; + uint8_t reqsensearea[MAX_REQ_SENSE_LEN]; + uint8_t numsge; + uint8_t scsistatus; + uint32_t dataxferaddr; + uint32_t dataxferlen; +} __attribute__ ((packed)) mraid_passthru_t; + +typedef struct { + + uint32_t dataxferaddr_lo; + uint32_t dataxferaddr_hi; + mraid_passthru_t pthru32; + +} __attribute__ ((packed)) mega_passthru64_t; + +/** + * mraid_epassthru_t - passthru structure to issue commands to physical devices + * @timeout : command timeout, 0=6sec, 1=60sec, 2=10min, 3=3hr + * @ars : set if ARS required after check condition + * @rsvd1 : reserved field + * @cd_rom : (?) + * @rsvd2 : reserved field + * @islogical : set if command meant for logical devices + * @logdrv : logical drive number if command for LD + * @channel : Channel on which physical device is located + * @target : SCSI target of the device + * @queuetag : unused + * @queueaction : unused + * @cdblen : length of the CDB + * @rsvd3 : reserved field + * @cdb : SCSI CDB + * @numsge : number of scatter-gather elements in the sg list + * @status : SCSI status of the command completed. + * @reqsenselen : amount of request sense data to be returned + * @reqsensearea : Sense information buffer + * @rsvd4 : reserved field + * @dataxferaddr : DMA data transfer address + * @dataxferlen : amount of the data to be transferred. + */ +typedef struct { + uint8_t timeout :3; + uint8_t ars :1; + uint8_t rsvd1 :1; + uint8_t cd_rom :1; + uint8_t rsvd2 :1; + uint8_t islogical :1; + uint8_t logdrv; + uint8_t channel; + uint8_t target; + uint8_t queuetag; + uint8_t queueaction; + uint8_t cdblen; + uint8_t rsvd3; + uint8_t cdb[16]; + uint8_t numsge; + uint8_t status; + uint8_t reqsenselen; + uint8_t reqsensearea[MAX_REQ_SENSE_LEN]; + uint8_t rsvd4; + uint32_t dataxferaddr; + uint32_t dataxferlen; +} __attribute__ ((packed)) mraid_epassthru_t; + + +/** + * mraid_pinfo_t - product info, static information about the controller + * @data_size : current size in bytes (not including resvd) + * @config_signature : Current value is 0x00282008 + * @fw_version : Firmware version + * @bios_version : version of the BIOS + * @product_name : Name given to the controller + * @max_commands : Maximum concurrent commands supported + * @nchannels : Number of SCSI Channels detected + * @fc_loop_present : Number of Fibre Loops detected + * @mem_type : EDO, FPM, SDRAM etc + * @signature : + * @dram_size : In terms of MB + * @subsysid : device PCI subsystem ID + * @subsysvid : device PCI subsystem vendor ID + * @notify_counters : + * @pad1k : 135 + 889 resvd = 1024 total size + * + * This structures holds the information about the controller which is not + * expected to change dynamically. + * + * The current value of config signature is 0x00282008: + * 0x28 = MAX_LOGICAL_DRIVES, + * 0x20 = Number of stripes and + * 0x08 = Number of spans + */ +typedef struct { + uint32_t data_size; + uint32_t config_signature; + uint8_t fw_version[16]; + uint8_t bios_version[16]; + uint8_t product_name[80]; + uint8_t max_commands; + uint8_t nchannels; + uint8_t fc_loop_present; + uint8_t mem_type; + uint32_t signature; + uint16_t dram_size; + uint16_t subsysid; + uint16_t subsysvid; + uint8_t notify_counters; + uint8_t pad1k[889]; +} __attribute__ ((packed)) mraid_pinfo_t; + + +/** + * mraid_notify_t - the notification structure + * @global_counter : Any change increments this counter + * @param_counter : Indicates any params changed + * @param_id : Param modified - defined below + * @param_val : New val of last param modified + * @write_config_counter : write config occurred + * @write_config_rsvd : + * @ldrv_op_counter : Indicates ldrv op started/completed + * @ldrv_opid : ldrv num + * @ldrv_opcmd : ldrv operation - defined below + * @ldrv_opstatus : status of the operation + * @ldrv_state_counter : Indicates change of ldrv state + * @ldrv_state_id : ldrv num + * @ldrv_state_new : New state + * @ldrv_state_old : old state + * @pdrv_state_counter : Indicates change of ldrv state + * @pdrv_state_id : pdrv id + * @pdrv_state_new : New state + * @pdrv_state_old : old state + * @pdrv_fmt_counter : Indicates pdrv format started/over + * @pdrv_fmt_id : pdrv id + * @pdrv_fmt_val : format started/over + * @pdrv_fmt_rsvd : + * @targ_xfer_counter : Indicates SCSI-2 Xfer rate change + * @targ_xfer_id : pdrv Id + * @targ_xfer_val : new Xfer params of last pdrv + * @targ_xfer_rsvd : + * @fcloop_id_chg_counter : Indicates loopid changed + * @fcloopid_pdrvid : pdrv id + * @fcloop_id0 : loopid on fc loop 0 + * @fcloop_id1 : loopid on fc loop 1 + * @fcloop_state_counter : Indicates loop state changed + * @fcloop_state0 : state of fc loop 0 + * @fcloop_state1 : state of fc loop 1 + * @fcloop_state_rsvd : + */ +typedef struct { + uint32_t global_counter; + uint8_t param_counter; + uint8_t param_id; + uint16_t param_val; + uint8_t write_config_counter; + uint8_t write_config_rsvd[3]; + uint8_t ldrv_op_counter; + uint8_t ldrv_opid; + uint8_t ldrv_opcmd; + uint8_t ldrv_opstatus; + uint8_t ldrv_state_counter; + uint8_t ldrv_state_id; + uint8_t ldrv_state_new; + uint8_t ldrv_state_old; + uint8_t pdrv_state_counter; + uint8_t pdrv_state_id; + uint8_t pdrv_state_new; + uint8_t pdrv_state_old; + uint8_t pdrv_fmt_counter; + uint8_t pdrv_fmt_id; + uint8_t pdrv_fmt_val; + uint8_t pdrv_fmt_rsvd; + uint8_t targ_xfer_counter; + uint8_t targ_xfer_id; + uint8_t targ_xfer_val; + uint8_t targ_xfer_rsvd; + uint8_t fcloop_id_chg_counter; + uint8_t fcloopid_pdrvid; + uint8_t fcloop_id0; + uint8_t fcloop_id1; + uint8_t fcloop_state_counter; + uint8_t fcloop_state0; + uint8_t fcloop_state1; + uint8_t fcloop_state_rsvd; +} __attribute__ ((packed)) mraid_notify_t; + + +/** + * mraid_inquiry3_t - enquiry for device information + * + * @data_size : current size in bytes (not including resvd) + * @notify : + * @notify_rsvd : + * @rebuild_rate : rebuild rate (0% - 100%) + * @cache_flush_int : cache flush interval in seconds + * @sense_alert : + * @drive_insert_count : drive insertion count + * @battery_status : + * @num_ldrv : no. of Log Drives configured + * @recon_state : state of reconstruct + * @ldrv_op_status : logdrv Status + * @ldrv_size : size of each log drv + * @ldrv_prop : + * @ldrv_state : state of log drives + * @pdrv_state : state of phys drvs. + * @pdrv_format : + * @targ_xfer : phys device transfer rate + * @pad1k : 761 + 263reserved = 1024 bytes total size + */ +#define MAX_NOTIFY_SIZE 0x80 +#define CUR_NOTIFY_SIZE sizeof(mraid_notify_t) + +typedef struct { + uint32_t data_size; + + mraid_notify_t notify; + + uint8_t notify_rsvd[MAX_NOTIFY_SIZE - CUR_NOTIFY_SIZE]; + + uint8_t rebuild_rate; + uint8_t cache_flush_int; + uint8_t sense_alert; + uint8_t drive_insert_count; + + uint8_t battery_status; + uint8_t num_ldrv; + uint8_t recon_state[MAX_LOGICAL_DRIVES_40LD / 8]; + uint16_t ldrv_op_status[MAX_LOGICAL_DRIVES_40LD / 8]; + + uint32_t ldrv_size[MAX_LOGICAL_DRIVES_40LD]; + uint8_t ldrv_prop[MAX_LOGICAL_DRIVES_40LD]; + uint8_t ldrv_state[MAX_LOGICAL_DRIVES_40LD]; + uint8_t pdrv_state[FC_MAX_PHYSICAL_DEVICES]; + uint16_t pdrv_format[FC_MAX_PHYSICAL_DEVICES / 16]; + + uint8_t targ_xfer[80]; + uint8_t pad1k[263]; +} __attribute__ ((packed)) mraid_inquiry3_t; + + +/** + * mraid_adapinfo_t - information about the adapter + * @max_commands : max concurrent commands supported + * @rebuild_rate : rebuild rate - 0% thru 100% + * @max_targ_per_chan : max targ per channel + * @nchannels : number of channels on HBA + * @fw_version : firmware version + * @age_of_flash : number of times FW has been flashed + * @chip_set_value : contents of 0xC0000832 + * @dram_size : in MB + * @cache_flush_interval : in seconds + * @bios_version : + * @board_type : + * @sense_alert : + * @write_config_count : increase with every configuration change + * @drive_inserted_count : increase with every drive inserted + * @inserted_drive : channel:Id of inserted drive + * @battery_status : bit 0: battery module missing + * bit 1: VBAD + * bit 2: temperature high + * bit 3: battery pack missing + * bit 4,5: + * 00 - charge complete + * 01 - fast charge in progress + * 10 - fast charge fail + * 11 - undefined + * bit 6: counter > 1000 + * bit 7: Undefined + * @dec_fault_bus_info : + */ +typedef struct { + uint8_t max_commands; + uint8_t rebuild_rate; + uint8_t max_targ_per_chan; + uint8_t nchannels; + uint8_t fw_version[4]; + uint16_t age_of_flash; + uint8_t chip_set_value; + uint8_t dram_size; + uint8_t cache_flush_interval; + uint8_t bios_version[4]; + uint8_t board_type; + uint8_t sense_alert; + uint8_t write_config_count; + uint8_t battery_status; + uint8_t dec_fault_bus_info; +} __attribute__ ((packed)) mraid_adapinfo_t; + + +/** + * mraid_ldrv_info_t - information about the logical drives + * @nldrv : Number of logical drives configured + * @rsvd : + * @size : size of each logical drive + * @prop : + * @state : state of each logical drive + */ +typedef struct { + uint8_t nldrv; + uint8_t rsvd[3]; + uint32_t size[MAX_LOGICAL_DRIVES_8LD]; + uint8_t prop[MAX_LOGICAL_DRIVES_8LD]; + uint8_t state[MAX_LOGICAL_DRIVES_8LD]; +} __attribute__ ((packed)) mraid_ldrv_info_t; + + +/** + * mraid_pdrv_info_t - information about the physical drives + * @pdrv_state : state of each physical drive + */ +typedef struct { + uint8_t pdrv_state[MBOX_MAX_PHYSICAL_DRIVES]; + uint8_t rsvd; +} __attribute__ ((packed)) mraid_pdrv_info_t; + + +/** + * mraid_inquiry_t - RAID inquiry, mailbox command 0x05 + * @mraid_adapinfo_t : adapter information + * @mraid_ldrv_info_t : logical drives information + * @mraid_pdrv_info_t : physical drives information + */ +typedef struct { + mraid_adapinfo_t adapter_info; + mraid_ldrv_info_t logdrv_info; + mraid_pdrv_info_t pdrv_info; +} __attribute__ ((packed)) mraid_inquiry_t; + + +/** + * mraid_extinq_t - RAID extended inquiry, mailbox command 0x04 + * + * @raid_inq : raid inquiry + * @phys_drv_format : + * @stack_attn : + * @modem_status : + * @rsvd : + */ +typedef struct { + mraid_inquiry_t raid_inq; + uint16_t phys_drv_format[MAX_MBOX_CHANNELS]; + uint8_t stack_attn; + uint8_t modem_status; + uint8_t rsvd[2]; +} __attribute__ ((packed)) mraid_extinq_t; + + +/** + * adap_device_t - device information + * @channel : channel fpor the device + * @target : target ID of the device + */ +typedef struct { + uint8_t channel; + uint8_t target; +}__attribute__ ((packed)) adap_device_t; + + +/** + * adap_span_40ld_t - 40LD span + * @start_blk : starting block + * @num_blks : number of blocks + */ +typedef struct { + uint32_t start_blk; + uint32_t num_blks; + adap_device_t device[MAX_ROW_SIZE_40LD]; +}__attribute__ ((packed)) adap_span_40ld_t; + + +/** + * adap_span_8ld_t - 8LD span + * @start_blk : starting block + * @num_blks : number of blocks + */ +typedef struct { + uint32_t start_blk; + uint32_t num_blks; + adap_device_t device[MAX_ROW_SIZE_8LD]; +}__attribute__ ((packed)) adap_span_8ld_t; + + +/** + * logdrv_param_t - logical drives parameters + * + * @span_depth : total number of spans + * @level : RAID level + * @read_ahead : read ahead, no read ahead, adaptive read ahead + * @stripe_sz : encoded stripe size + * @status : status of the logical drive + * @write_mode : write mode, write_through/write_back + * @direct_io : direct io or through cache + * @row_size : number of stripes in a row + */ +typedef struct { + uint8_t span_depth; + uint8_t level; + uint8_t read_ahead; + uint8_t stripe_sz; + uint8_t status; + uint8_t write_mode; + uint8_t direct_io; + uint8_t row_size; +} __attribute__ ((packed)) logdrv_param_t; + + +/** + * logdrv_40ld_t - logical drive definition for 40LD controllers + * @lparam : logical drives parameters + * @span : span + */ +typedef struct { + logdrv_param_t lparam; + adap_span_40ld_t span[SPAN_DEPTH_8_SPANS]; +}__attribute__ ((packed)) logdrv_40ld_t; + + +/** + * logdrv_8ld_span8_t - logical drive definition for 8LD controllers + * @lparam : logical drives parameters + * @span : span + * + * 8-LD logical drive with up to 8 spans + */ +typedef struct { + logdrv_param_t lparam; + adap_span_8ld_t span[SPAN_DEPTH_8_SPANS]; +}__attribute__ ((packed)) logdrv_8ld_span8_t; + + +/** + * logdrv_8ld_span4_t - logical drive definition for 8LD controllers + * @lparam : logical drives parameters + * @span : span + * + * 8-LD logical drive with up to 4 spans + */ +typedef struct { + logdrv_param_t lparam; + adap_span_8ld_t span[SPAN_DEPTH_4_SPANS]; +}__attribute__ ((packed)) logdrv_8ld_span4_t; + + +/** + * phys_drive_t - physical device information + * @type : Type of the device + * @cur_status : current status of the device + * @tag_depth : Level of tagging + * @sync_neg : sync negotiation - ENABLE or DISABLE + * @size : configurable size in terms of 512 byte + */ +typedef struct { + uint8_t type; + uint8_t cur_status; + uint8_t tag_depth; + uint8_t sync_neg; + uint32_t size; +}__attribute__ ((packed)) phys_drive_t; + + +/** + * disk_array_40ld_t - disk array for 40LD controllers + * @numldrv : number of logical drives + * @resvd : + * @ldrv : logical drives information + * @pdrv : physical drives information + */ +typedef struct { + uint8_t numldrv; + uint8_t resvd[3]; + logdrv_40ld_t ldrv[MAX_LOGICAL_DRIVES_40LD]; + phys_drive_t pdrv[MBOX_MAX_PHYSICAL_DRIVES]; +}__attribute__ ((packed)) disk_array_40ld_t; + + +/** + * disk_array_8ld_span8_t - disk array for 8LD controllers + * @numldrv : number of logical drives + * @resvd : + * @ldrv : logical drives information + * @pdrv : physical drives information + * + * Disk array for 8LD logical drives with up to 8 spans + */ +typedef struct { + uint8_t numldrv; + uint8_t resvd[3]; + logdrv_8ld_span8_t ldrv[MAX_LOGICAL_DRIVES_8LD]; + phys_drive_t pdrv[MBOX_MAX_PHYSICAL_DRIVES]; +}__attribute__ ((packed)) disk_array_8ld_span8_t; + + +/** + * disk_array_8ld_span4_t - disk array for 8LD controllers + * @numldrv : number of logical drives + * @resvd : + * @ldrv : logical drives information + * @pdrv : physical drives information + * + * Disk array for 8LD logical drives with up to 4 spans + */ +typedef struct { + uint8_t numldrv; + uint8_t resvd[3]; + logdrv_8ld_span4_t ldrv[MAX_LOGICAL_DRIVES_8LD]; + phys_drive_t pdrv[MBOX_MAX_PHYSICAL_DRIVES]; +}__attribute__ ((packed)) disk_array_8ld_span4_t; + + +/** + * struct private_bios_data - bios private data for boot devices + * @geometry : bits 0-3 - BIOS geometry, 0x0001 - 1GB, 0x0010 - 2GB, + * 0x1000 - 8GB, Others values are invalid + * @unused : bits 4-7 are unused + * @boot_drv : logical drive set as boot drive, 0..7 - for 8LD cards, + * 0..39 - for 40LD cards + * @cksum : 0-(sum of first 13 bytes of this structure) + */ +struct private_bios_data { + uint8_t geometry :4; + uint8_t unused :4; + uint8_t boot_drv; + uint8_t rsvd[12]; + uint16_t cksum; +} __attribute__ ((packed)); + + +/** + * mbox_sgl64 - 64-bit scatter list for mailbox based controllers + * @address : address of the buffer + * @length : data transfer length + */ +typedef struct { + uint64_t address; + uint32_t length; +} __attribute__ ((packed)) mbox_sgl64; + +/** + * mbox_sgl32 - 32-bit scatter list for mailbox based controllers + * @address : address of the buffer + * @length : data transfer length + */ +typedef struct { + uint32_t address; + uint32_t length; +} __attribute__ ((packed)) mbox_sgl32; + +#endif // _MRAID_MBOX_DEFS_H_ + +/* vim: set ts=8 sw=8 tw=78: */ diff --git a/drivers/scsi/megaraid/mega_common.h b/drivers/scsi/megaraid/mega_common.h new file mode 100644 index 00000000..5ead1283 --- /dev/null +++ b/drivers/scsi/megaraid/mega_common.h @@ -0,0 +1,290 @@ +/* + * + * Linux MegaRAID device driver + * + * Copyright (c) 2003-2004 LSI Logic Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * FILE : mega_common.h + * + * Libaray of common routine used by all low-level megaraid drivers + */ + +#ifndef _MEGA_COMMON_H_ +#define _MEGA_COMMON_H_ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/spinlock.h> +#include <linux/mutex.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/blkdev.h> +#include <linux/list.h> +#include <linux/moduleparam.h> +#include <linux/dma-mapping.h> +#include <scsi/scsi.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> + + +#define LSI_MAX_CHANNELS 16 +#define LSI_MAX_LOGICAL_DRIVES_64LD (64+1) + +#define HBA_SIGNATURE_64_BIT 0x299 +#define PCI_CONF_AMISIG64 0xa4 + +#define MEGA_SCSI_INQ_EVPD 1 +#define MEGA_INVALID_FIELD_IN_CDB 0x24 + + +/** + * scb_t - scsi command control block + * @ccb : command control block for individual driver + * @list : list of control blocks + * @gp : general purpose field for LLDs + * @sno : all SCBs have a serial number + * @scp : associated scsi command + * @state : current state of scb + * @dma_dir : direction of data transfer + * @dma_type : transfer with sg list, buffer, or no data transfer + * @dev_channel : actual channel on the device + * @dev_target : actual target on the device + * @status : completion status + * + * This is our central data structure to issue commands the each driver. + * Driver specific data structures are maintained in the ccb field. + * scb provides a field 'gp', which can be used by LLD for its own purposes + * + * dev_channel and dev_target must be initialized with the actual channel and + * target on the controller. + */ +typedef struct { + caddr_t ccb; + struct list_head list; + unsigned long gp; + unsigned int sno; + struct scsi_cmnd *scp; + uint32_t state; + uint32_t dma_direction; + uint32_t dma_type; + uint16_t dev_channel; + uint16_t dev_target; + uint32_t status; +} scb_t; + +/* + * SCB states as it transitions from one state to another + */ +#define SCB_FREE 0x0000 /* on the free list */ +#define SCB_ACTIVE 0x0001 /* off the free list */ +#define SCB_PENDQ 0x0002 /* on the pending queue */ +#define SCB_ISSUED 0x0004 /* issued - owner f/w */ +#define SCB_ABORT 0x0008 /* Got an abort for this one */ +#define SCB_RESET 0x0010 /* Got a reset for this one */ + +/* + * DMA types for scb + */ +#define MRAID_DMA_NONE 0x0000 /* no data transfer for this command */ +#define MRAID_DMA_WSG 0x0001 /* data transfer using a sg list */ +#define MRAID_DMA_WBUF 0x0002 /* data transfer using a contiguous buffer */ + + +/** + * struct adapter_t - driver's initialization structure + * @aram dpc_h : tasklet handle + * @pdev : pci configuration pointer for kernel + * @host : pointer to host structure of mid-layer + * @lock : synchronization lock for mid-layer and driver + * @quiescent : driver is quiescent for now. + * @outstanding_cmds : number of commands pending in the driver + * @kscb_list : pointer to the bulk of SCBs pointers for IO + * @kscb_pool : pool of free scbs for IO + * @kscb_pool_lock : lock for pool of free scbs + * @pend_list : pending commands list + * @pend_list_lock : exclusion lock for pending commands list + * @completed_list : list of completed commands + * @completed_list_lock : exclusion lock for list of completed commands + * @sglen : max sg elements supported + * @device_ids : to convert kernel device addr to our devices. + * @raid_device : raid adapter specific pointer + * @max_channel : maximum channel number supported - inclusive + * @max_target : max target supported - inclusive + * @max_lun : max lun supported - inclusive + * @unique_id : unique identifier for each adapter + * @irq : IRQ for this adapter + * @ito : internal timeout value, (-1) means no timeout + * @ibuf : buffer to issue internal commands + * @ibuf_dma_h : dma handle for the above buffer + * @uscb_list : SCB pointers for user cmds, common mgmt module + * @uscb_pool : pool of SCBs for user commands + * @uscb_pool_lock : exclusion lock for these SCBs + * @max_cmds : max outstanding commands + * @fw_version : firmware version + * @bios_version : bios version + * @max_cdb_sz : biggest CDB size supported. + * @ha : is high availability present - clustering + * @init_id : initiator ID, the default value should be 7 + * @max_sectors : max sectors per request + * @cmd_per_lun : max outstanding commands per LUN + * @being_detached : set when unloading, no more mgmt calls + * + * + * mraid_setup_device_map() can be called anytime after the device map is + * available and MRAID_GET_DEVICE_MAP() can be called whenever the mapping is + * required, usually from LLD's queue entry point. The formar API sets up the + * MRAID_IS_LOGICAL(adapter_t *, struct scsi_cmnd *) to find out if the + * device in question is a logical drive. + * + * quiescent flag should be set by the driver if it is not accepting more + * commands + * + * NOTE: The fields of this structures are placed to minimize cache misses + */ + +// amount of space required to store the bios and firmware version strings +#define VERSION_SIZE 16 + +typedef struct { + struct tasklet_struct dpc_h; + struct pci_dev *pdev; + struct Scsi_Host *host; + spinlock_t lock; + uint8_t quiescent; + int outstanding_cmds; + scb_t *kscb_list; + struct list_head kscb_pool; + spinlock_t kscb_pool_lock; + struct list_head pend_list; + spinlock_t pend_list_lock; + struct list_head completed_list; + spinlock_t completed_list_lock; + uint16_t sglen; + int device_ids[LSI_MAX_CHANNELS] + [LSI_MAX_LOGICAL_DRIVES_64LD]; + caddr_t raid_device; + uint8_t max_channel; + uint16_t max_target; + uint8_t max_lun; + + uint32_t unique_id; + int irq; + uint8_t ito; + caddr_t ibuf; + dma_addr_t ibuf_dma_h; + scb_t *uscb_list; + struct list_head uscb_pool; + spinlock_t uscb_pool_lock; + int max_cmds; + uint8_t fw_version[VERSION_SIZE]; + uint8_t bios_version[VERSION_SIZE]; + uint8_t max_cdb_sz; + uint8_t ha; + uint16_t init_id; + uint16_t max_sectors; + uint16_t cmd_per_lun; + atomic_t being_detached; +} adapter_t; + +#define SCSI_FREE_LIST_LOCK(adapter) (&adapter->kscb_pool_lock) +#define USER_FREE_LIST_LOCK(adapter) (&adapter->uscb_pool_lock) +#define PENDING_LIST_LOCK(adapter) (&adapter->pend_list_lock) +#define COMPLETED_LIST_LOCK(adapter) (&adapter->completed_list_lock) + + +// conversion from scsi command +#define SCP2HOST(scp) (scp)->device->host // to host +#define SCP2HOSTDATA(scp) SCP2HOST(scp)->hostdata // to soft state +#define SCP2CHANNEL(scp) (scp)->device->channel // to channel +#define SCP2TARGET(scp) (scp)->device->id // to target +#define SCP2LUN(scp) (scp)->device->lun // to LUN + +// generic macro to convert scsi command and host to controller's soft state +#define SCSIHOST2ADAP(host) (((caddr_t *)(host->hostdata))[0]) +#define SCP2ADAPTER(scp) (adapter_t *)SCSIHOST2ADAP(SCP2HOST(scp)) + + +#define MRAID_IS_LOGICAL(adp, scp) \ + (SCP2CHANNEL(scp) == (adp)->max_channel) ? 1 : 0 + +#define MRAID_IS_LOGICAL_SDEV(adp, sdev) \ + (sdev->channel == (adp)->max_channel) ? 1 : 0 + +/** + * MRAID_GET_DEVICE_MAP - device ids + * @adp : adapter's soft state + * @scp : mid-layer scsi command pointer + * @p_chan : physical channel on the controller + * @target : target id of the device or logical drive number + * @islogical : set if the command is for the logical drive + * + * Macro to retrieve information about device class, logical or physical and + * the corresponding physical channel and target or logical drive number + */ +#define MRAID_GET_DEVICE_MAP(adp, scp, p_chan, target, islogical) \ + /* \ + * Is the request coming for the virtual channel \ + */ \ + islogical = MRAID_IS_LOGICAL(adp, scp); \ + \ + /* \ + * Get an index into our table of drive ids mapping \ + */ \ + if (islogical) { \ + p_chan = 0xFF; \ + target = \ + (adp)->device_ids[(adp)->max_channel][SCP2TARGET(scp)]; \ + } \ + else { \ + p_chan = ((adp)->device_ids[SCP2CHANNEL(scp)] \ + [SCP2TARGET(scp)] >> 8) & 0xFF; \ + target = ((adp)->device_ids[SCP2CHANNEL(scp)] \ + [SCP2TARGET(scp)] & 0xFF); \ + } + +/* + * ### Helper routines ### + */ +#define LSI_DBGLVL mraid_debug_level // each LLD must define a global + // mraid_debug_level + +#ifdef DEBUG +#if defined (_ASSERT_PANIC) +#define ASSERT_ACTION panic +#else +#define ASSERT_ACTION printk +#endif + +#define ASSERT(expression) \ + if (!(expression)) { \ + ASSERT_ACTION("assertion failed:(%s), file: %s, line: %d:%s\n", \ + #expression, __FILE__, __LINE__, __func__); \ + } +#else +#define ASSERT(expression) +#endif + +/** + * struct mraid_pci_blk - structure holds DMA memory block info + * @vaddr : virtual address to a memory block + * @dma_addr : DMA handle to a memory block + * + * This structure is filled up for the caller. It is the responsibilty of the + * caller to allocate this array big enough to store addresses for all + * requested elements + */ +struct mraid_pci_blk { + caddr_t vaddr; + dma_addr_t dma_addr; +}; + +#endif // _MEGA_COMMON_H_ + +// vim: set ts=8 sw=8 tw=78: diff --git a/drivers/scsi/megaraid/megaraid_ioctl.h b/drivers/scsi/megaraid/megaraid_ioctl.h new file mode 100644 index 00000000..05f6e4ec --- /dev/null +++ b/drivers/scsi/megaraid/megaraid_ioctl.h @@ -0,0 +1,300 @@ +/* + * + * Linux MegaRAID device driver + * + * Copyright (c) 2003-2004 LSI Logic Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * FILE : megaraid_ioctl.h + * + * Definitions to interface with user level applications + */ + +#ifndef _MEGARAID_IOCTL_H_ +#define _MEGARAID_IOCTL_H_ + +#include <linux/types.h> +#include <linux/semaphore.h> + +#include "mbox_defs.h" + +/* + * console messages debug levels + */ +#define CL_ANN 0 /* print unconditionally, announcements */ +#define CL_DLEVEL1 1 /* debug level 1, informative */ +#define CL_DLEVEL2 2 /* debug level 2, verbose */ +#define CL_DLEVEL3 3 /* debug level 3, very verbose */ + +/** + * con_log() - console log routine + * @level : indicates the severity of the message. + * @fmt : format string + * + * con_log displays the error messages on the console based on the current + * debug level. Also it attaches the appropriate kernel severity level with + * the message. + */ +#define con_log(level, fmt) if (LSI_DBGLVL >= level) printk fmt; + +/* + * Definitions & Declarations needed to use common management module + */ + +#define MEGAIOC_MAGIC 'm' +#define MEGAIOCCMD _IOWR(MEGAIOC_MAGIC, 0, mimd_t) + +#define MEGAIOC_QNADAP 'm' /* Query # of adapters */ +#define MEGAIOC_QDRVRVER 'e' /* Query driver version */ +#define MEGAIOC_QADAPINFO 'g' /* Query adapter information */ + +#define USCSICMD 0x80 +#define UIOC_RD 0x00001 +#define UIOC_WR 0x00002 + +#define MBOX_CMD 0x00000 +#define GET_DRIVER_VER 0x10000 +#define GET_N_ADAP 0x20000 +#define GET_ADAP_INFO 0x30000 +#define GET_CAP 0x40000 +#define GET_STATS 0x50000 +#define GET_IOCTL_VERSION 0x01 + +#define EXT_IOCTL_SIGN_SZ 16 +#define EXT_IOCTL_SIGN "$$_EXTD_IOCTL_$$" + +#define MBOX_LEGACY 0x00 /* ioctl has legacy mbox*/ +#define MBOX_HPE 0x01 /* ioctl has hpe mbox */ + +#define APPTYPE_MIMD 0x00 /* old existing apps */ +#define APPTYPE_UIOC 0x01 /* new apps using uioc */ + +#define IOCTL_ISSUE 0x00000001 /* Issue ioctl */ +#define IOCTL_ABORT 0x00000002 /* Abort previous ioctl */ + +#define DRVRTYPE_MBOX 0x00000001 /* regular mbox driver */ +#define DRVRTYPE_HPE 0x00000002 /* new hpe driver */ + +#define MKADAP(adapno) (MEGAIOC_MAGIC << 8 | (adapno) ) +#define GETADAP(mkadap) ((mkadap) ^ MEGAIOC_MAGIC << 8) + +#define MAX_DMA_POOLS 5 /* 4k, 8k, 16k, 32k, 64k*/ + + +/** + * struct uioc_t - the common ioctl packet structure + * + * @signature : Must be "$$_EXTD_IOCTL_$$" + * @mb_type : Type of the mail box (MB_LEGACY or MB_HPE) + * @app_type : Type of the issuing application (existing or new) + * @opcode : Opcode of the command + * @adapno : Adapter number + * @cmdbuf : Pointer to buffer - can point to mbox or plain data buffer + * @xferlen : xferlen for DCMD and non mailbox commands + * @data_dir : Direction of the data transfer + * @status : Status from the driver + * @reserved : reserved bytes for future expansion + * + * @user_data : user data transfer address is saved in this + * @user_data_len: length of the data buffer sent by user app + * @user_pthru : user passthru address is saves in this (null if DCMD) + * @pthru32 : kernel address passthru (allocated per kioc) + * @pthru32_h : physicall address of @pthru32 + * @list : for kioc free pool list maintenance + * @done : call back routine for llds to call when kioc is completed + * @buf_vaddr : dma pool buffer attached to kioc for data transfer + * @buf_paddr : physical address of the dma pool buffer + * @pool_index : index of the dma pool that @buf_vaddr is taken from + * @free_buf : indicates if buffer needs to be freed after kioc completes + * + * Note : All LSI drivers understand only this packet. Any other + * : format sent by applications would be converted to this. + */ +typedef struct uioc { + +/* User Apps: */ + + uint8_t signature[EXT_IOCTL_SIGN_SZ]; + uint16_t mb_type; + uint16_t app_type; + uint32_t opcode; + uint32_t adapno; + uint64_t cmdbuf; + uint32_t xferlen; + uint32_t data_dir; + int32_t status; + uint8_t reserved[128]; + +/* Driver Data: */ + void __user * user_data; + uint32_t user_data_len; + + /* 64bit alignment */ + uint32_t pad_for_64bit_align; + + mraid_passthru_t __user *user_pthru; + + mraid_passthru_t *pthru32; + dma_addr_t pthru32_h; + + struct list_head list; + void (*done)(struct uioc*); + + caddr_t buf_vaddr; + dma_addr_t buf_paddr; + int8_t pool_index; + uint8_t free_buf; + + uint8_t timedout; + +} __attribute__ ((aligned(1024),packed)) uioc_t; + + +/** + * struct mraid_hba_info - information about the controller + * + * @pci_vendor_id : PCI vendor id + * @pci_device_id : PCI device id + * @subsystem_vendor_id : PCI subsystem vendor id + * @subsystem_device_id : PCI subsystem device id + * @baseport : base port of hba memory + * @pci_bus : PCI bus + * @pci_dev_fn : PCI device/function values + * @irq : interrupt vector for the device + * + * Extended information of 256 bytes about the controller. Align on the single + * byte boundary so that 32-bit applications can be run on 64-bit platform + * drivers withoug re-compilation. + * NOTE: reduce the number of reserved bytes whenever new field are added, so + * that total size of the structure remains 256 bytes. + */ +typedef struct mraid_hba_info { + + uint16_t pci_vendor_id; + uint16_t pci_device_id; + uint16_t subsys_vendor_id; + uint16_t subsys_device_id; + + uint64_t baseport; + uint8_t pci_bus; + uint8_t pci_dev_fn; + uint8_t pci_slot; + uint8_t irq; + + uint32_t unique_id; + uint32_t host_no; + + uint8_t num_ldrv; +} __attribute__ ((aligned(256), packed)) mraid_hba_info_t; + + +/** + * mcontroller : adapter info structure for old mimd_t apps + * + * @base : base address + * @irq : irq number + * @numldrv : number of logical drives + * @pcibus : pci bus + * @pcidev : pci device + * @pcifun : pci function + * @pciid : pci id + * @pcivendor : vendor id + * @pcislot : slot number + * @uid : unique id + */ +typedef struct mcontroller { + + uint64_t base; + uint8_t irq; + uint8_t numldrv; + uint8_t pcibus; + uint16_t pcidev; + uint8_t pcifun; + uint16_t pciid; + uint16_t pcivendor; + uint8_t pcislot; + uint32_t uid; + +} __attribute__ ((packed)) mcontroller_t; + + +/** + * mm_dmapool_t : Represents one dma pool with just one buffer + * + * @vaddr : Virtual address + * @paddr : DMA physicall address + * @bufsize : In KB - 4 = 4k, 8 = 8k etc. + * @handle : Handle to the dma pool + * @lock : lock to synchronize access to the pool + * @in_use : If pool already in use, attach new block + */ +typedef struct mm_dmapool { + caddr_t vaddr; + dma_addr_t paddr; + uint32_t buf_size; + struct dma_pool *handle; + spinlock_t lock; + uint8_t in_use; +} mm_dmapool_t; + + +/** + * mraid_mmadp_t: Structure that drivers pass during (un)registration + * + * @unique_id : Any unique id (usually PCI bus+dev+fn) + * @drvr_type : megaraid or hpe (DRVRTYPE_MBOX or DRVRTYPE_HPE) + * @drv_data : Driver specific; not touched by the common module + * @timeout : timeout for issued kiocs + * @max_kioc : Maximum ioctl packets acceptable by the lld + * @pdev : pci dev; used for allocating dma'ble memory + * @issue_uioc : Driver supplied routine to issue uioc_t commands + * : issue_uioc(drvr_data, kioc, ISSUE/ABORT, uioc_done) + * @quiescent : flag to indicate if ioctl can be issued to this adp + * @list : attach with the global list of adapters + * @kioc_list : block of mem for @max_kioc number of kiocs + * @kioc_pool : pool of free kiocs + * @kioc_pool_lock : protection for free pool + * @kioc_semaphore : so as not to exceed @max_kioc parallel ioctls + * @mbox_list : block of mem for @max_kioc number of mboxes + * @pthru_dma_pool : DMA pool to allocate passthru packets + * @dma_pool_list : array of dma pools + */ + +typedef struct mraid_mmadp { + +/* Filled by driver */ + + uint32_t unique_id; + uint32_t drvr_type; + unsigned long drvr_data; + uint16_t timeout; + uint8_t max_kioc; + + struct pci_dev *pdev; + + int(*issue_uioc)(unsigned long, uioc_t *, uint32_t); + +/* Maintained by common module */ + uint32_t quiescent; + + struct list_head list; + uioc_t *kioc_list; + struct list_head kioc_pool; + spinlock_t kioc_pool_lock; + struct semaphore kioc_semaphore; + + mbox64_t *mbox_list; + struct dma_pool *pthru_dma_pool; + mm_dmapool_t dma_pool_list[MAX_DMA_POOLS]; + +} mraid_mmadp_t; + +int mraid_mm_register_adp(mraid_mmadp_t *); +int mraid_mm_unregister_adp(uint32_t); +uint32_t mraid_mm_adapter_app_handle(uint32_t); + +#endif /* _MEGARAID_IOCTL_H_ */ diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c new file mode 100644 index 00000000..35bd1387 --- /dev/null +++ b/drivers/scsi/megaraid/megaraid_mbox.c @@ -0,0 +1,4173 @@ +/* + * + * Linux MegaRAID device driver + * + * Copyright (c) 2003-2004 LSI Logic Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * FILE : megaraid_mbox.c + * Version : v2.20.5.1 (Nov 16 2006) + * + * Authors: + * Atul Mukker <Atul.Mukker@lsi.com> + * Sreenivas Bagalkote <Sreenivas.Bagalkote@lsi.com> + * Manoj Jose <Manoj.Jose@lsi.com> + * Seokmann Ju + * + * List of supported controllers + * + * OEM Product Name VID DID SSVID SSID + * --- ------------ --- --- ---- ---- + * Dell PERC3/QC 101E 1960 1028 0471 + * Dell PERC3/DC 101E 1960 1028 0493 + * Dell PERC3/SC 101E 1960 1028 0475 + * Dell PERC3/Di 1028 1960 1028 0123 + * Dell PERC4/SC 1000 1960 1028 0520 + * Dell PERC4/DC 1000 1960 1028 0518 + * Dell PERC4/QC 1000 0407 1028 0531 + * Dell PERC4/Di 1028 000F 1028 014A + * Dell PERC 4e/Si 1028 0013 1028 016c + * Dell PERC 4e/Di 1028 0013 1028 016d + * Dell PERC 4e/Di 1028 0013 1028 016e + * Dell PERC 4e/Di 1028 0013 1028 016f + * Dell PERC 4e/Di 1028 0013 1028 0170 + * Dell PERC 4e/DC 1000 0408 1028 0002 + * Dell PERC 4e/SC 1000 0408 1028 0001 + * + * + * LSI MegaRAID SCSI 320-0 1000 1960 1000 A520 + * LSI MegaRAID SCSI 320-1 1000 1960 1000 0520 + * LSI MegaRAID SCSI 320-2 1000 1960 1000 0518 + * LSI MegaRAID SCSI 320-0X 1000 0407 1000 0530 + * LSI MegaRAID SCSI 320-2X 1000 0407 1000 0532 + * LSI MegaRAID SCSI 320-4X 1000 0407 1000 0531 + * LSI MegaRAID SCSI 320-1E 1000 0408 1000 0001 + * LSI MegaRAID SCSI 320-2E 1000 0408 1000 0002 + * LSI MegaRAID SATA 150-4 1000 1960 1000 4523 + * LSI MegaRAID SATA 150-6 1000 1960 1000 0523 + * LSI MegaRAID SATA 300-4X 1000 0409 1000 3004 + * LSI MegaRAID SATA 300-8X 1000 0409 1000 3008 + * + * INTEL RAID Controller SRCU42X 1000 0407 8086 0532 + * INTEL RAID Controller SRCS16 1000 1960 8086 0523 + * INTEL RAID Controller SRCU42E 1000 0408 8086 0002 + * INTEL RAID Controller SRCZCRX 1000 0407 8086 0530 + * INTEL RAID Controller SRCS28X 1000 0409 8086 3008 + * INTEL RAID Controller SROMBU42E 1000 0408 8086 3431 + * INTEL RAID Controller SROMBU42E 1000 0408 8086 3499 + * INTEL RAID Controller SRCU51L 1000 1960 8086 0520 + * + * FSC MegaRAID PCI Express ROMB 1000 0408 1734 1065 + * + * ACER MegaRAID ROMB-2E 1000 0408 1025 004D + * + * NEC MegaRAID PCI Express ROMB 1000 0408 1033 8287 + * + * For history of changes, see Documentation/scsi/ChangeLog.megaraid + */ + +#include <linux/slab.h> +#include <linux/module.h> +#include "megaraid_mbox.h" + +static int megaraid_init(void); +static void megaraid_exit(void); + +static int megaraid_probe_one(struct pci_dev*, const struct pci_device_id *); +static void megaraid_detach_one(struct pci_dev *); +static void megaraid_mbox_shutdown(struct pci_dev *); + +static int megaraid_io_attach(adapter_t *); +static void megaraid_io_detach(adapter_t *); + +static int megaraid_init_mbox(adapter_t *); +static void megaraid_fini_mbox(adapter_t *); + +static int megaraid_alloc_cmd_packets(adapter_t *); +static void megaraid_free_cmd_packets(adapter_t *); + +static int megaraid_mbox_setup_dma_pools(adapter_t *); +static void megaraid_mbox_teardown_dma_pools(adapter_t *); + +static int megaraid_sysfs_alloc_resources(adapter_t *); +static void megaraid_sysfs_free_resources(adapter_t *); + +static int megaraid_abort_handler(struct scsi_cmnd *); +static int megaraid_reset_handler(struct scsi_cmnd *); + +static int mbox_post_sync_cmd(adapter_t *, uint8_t []); +static int mbox_post_sync_cmd_fast(adapter_t *, uint8_t []); +static int megaraid_busywait_mbox(mraid_device_t *); +static int megaraid_mbox_product_info(adapter_t *); +static int megaraid_mbox_extended_cdb(adapter_t *); +static int megaraid_mbox_support_ha(adapter_t *, uint16_t *); +static int megaraid_mbox_support_random_del(adapter_t *); +static int megaraid_mbox_get_max_sg(adapter_t *); +static void megaraid_mbox_enum_raid_scsi(adapter_t *); +static void megaraid_mbox_flush_cache(adapter_t *); +static int megaraid_mbox_fire_sync_cmd(adapter_t *); + +static void megaraid_mbox_display_scb(adapter_t *, scb_t *); +static void megaraid_mbox_setup_device_map(adapter_t *); + +static int megaraid_queue_command(struct Scsi_Host *, struct scsi_cmnd *); +static scb_t *megaraid_mbox_build_cmd(adapter_t *, struct scsi_cmnd *, int *); +static void megaraid_mbox_runpendq(adapter_t *, scb_t *); +static void megaraid_mbox_prepare_pthru(adapter_t *, scb_t *, + struct scsi_cmnd *); +static void megaraid_mbox_prepare_epthru(adapter_t *, scb_t *, + struct scsi_cmnd *); + +static irqreturn_t megaraid_isr(int, void *); + +static void megaraid_mbox_dpc(unsigned long); + +static ssize_t megaraid_sysfs_show_app_hndl(struct device *, struct device_attribute *attr, char *); +static ssize_t megaraid_sysfs_show_ldnum(struct device *, struct device_attribute *attr, char *); + +static int megaraid_cmm_register(adapter_t *); +static int megaraid_cmm_unregister(adapter_t *); +static int megaraid_mbox_mm_handler(unsigned long, uioc_t *, uint32_t); +static int megaraid_mbox_mm_command(adapter_t *, uioc_t *); +static void megaraid_mbox_mm_done(adapter_t *, scb_t *); +static int gather_hbainfo(adapter_t *, mraid_hba_info_t *); +static int wait_till_fw_empty(adapter_t *); + + + +MODULE_AUTHOR("megaraidlinux@lsi.com"); +MODULE_DESCRIPTION("LSI Logic MegaRAID Mailbox Driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(MEGARAID_VERSION); + +/* + * ### modules parameters for driver ### + */ + +/* + * Set to enable driver to expose unconfigured disk to kernel + */ +static int megaraid_expose_unconf_disks = 0; +module_param_named(unconf_disks, megaraid_expose_unconf_disks, int, 0); +MODULE_PARM_DESC(unconf_disks, + "Set to expose unconfigured disks to kernel (default=0)"); + +/* + * driver wait time if the adapter's mailbox is busy + */ +static unsigned int max_mbox_busy_wait = MBOX_BUSY_WAIT; +module_param_named(busy_wait, max_mbox_busy_wait, int, 0); +MODULE_PARM_DESC(busy_wait, + "Max wait for mailbox in microseconds if busy (default=10)"); + +/* + * number of sectors per IO command + */ +static unsigned int megaraid_max_sectors = MBOX_MAX_SECTORS; +module_param_named(max_sectors, megaraid_max_sectors, int, 0); +MODULE_PARM_DESC(max_sectors, + "Maximum number of sectors per IO command (default=128)"); + +/* + * number of commands per logical unit + */ +static unsigned int megaraid_cmd_per_lun = MBOX_DEF_CMD_PER_LUN; +module_param_named(cmd_per_lun, megaraid_cmd_per_lun, int, 0); +MODULE_PARM_DESC(cmd_per_lun, + "Maximum number of commands per logical unit (default=64)"); + + +/* + * Fast driver load option, skip scanning for physical devices during load. + * This would result in non-disk devices being skipped during driver load + * time. These can be later added though, using /proc/scsi/scsi + */ +static unsigned int megaraid_fast_load = 0; +module_param_named(fast_load, megaraid_fast_load, int, 0); +MODULE_PARM_DESC(fast_load, + "Faster loading of the driver, skips physical devices! (default=0)"); + + +/* + * mraid_debug level - threshold for amount of information to be displayed by + * the driver. This level can be changed through modules parameters, ioctl or + * sysfs/proc interface. By default, print the announcement messages only. + */ +int mraid_debug_level = CL_ANN; +module_param_named(debug_level, mraid_debug_level, int, 0); +MODULE_PARM_DESC(debug_level, "Debug level for driver (default=0)"); + +/* + * ### global data ### + */ +static uint8_t megaraid_mbox_version[8] = + { 0x02, 0x20, 0x04, 0x06, 3, 7, 20, 5 }; + + +/* + * PCI table for all supported controllers. + */ +static struct pci_device_id pci_id_table_g[] = { + { + PCI_VENDOR_ID_DELL, + PCI_DEVICE_ID_PERC4_DI_DISCOVERY, + PCI_VENDOR_ID_DELL, + PCI_SUBSYS_ID_PERC4_DI_DISCOVERY, + }, + { + PCI_VENDOR_ID_LSI_LOGIC, + PCI_DEVICE_ID_PERC4_SC, + PCI_VENDOR_ID_DELL, + PCI_SUBSYS_ID_PERC4_SC, + }, + { + PCI_VENDOR_ID_LSI_LOGIC, + PCI_DEVICE_ID_PERC4_DC, + PCI_VENDOR_ID_DELL, + PCI_SUBSYS_ID_PERC4_DC, + }, + { + PCI_VENDOR_ID_LSI_LOGIC, + PCI_DEVICE_ID_VERDE, + PCI_ANY_ID, + PCI_ANY_ID, + }, + { + PCI_VENDOR_ID_DELL, + PCI_DEVICE_ID_PERC4_DI_EVERGLADES, + PCI_VENDOR_ID_DELL, + PCI_SUBSYS_ID_PERC4_DI_EVERGLADES, + }, + { + PCI_VENDOR_ID_DELL, + PCI_DEVICE_ID_PERC4E_SI_BIGBEND, + PCI_VENDOR_ID_DELL, + PCI_SUBSYS_ID_PERC4E_SI_BIGBEND, + }, + { + PCI_VENDOR_ID_DELL, + PCI_DEVICE_ID_PERC4E_DI_KOBUK, + PCI_VENDOR_ID_DELL, + PCI_SUBSYS_ID_PERC4E_DI_KOBUK, + }, + { + PCI_VENDOR_ID_DELL, + PCI_DEVICE_ID_PERC4E_DI_CORVETTE, + PCI_VENDOR_ID_DELL, + PCI_SUBSYS_ID_PERC4E_DI_CORVETTE, + }, + { + PCI_VENDOR_ID_DELL, + PCI_DEVICE_ID_PERC4E_DI_EXPEDITION, + PCI_VENDOR_ID_DELL, + PCI_SUBSYS_ID_PERC4E_DI_EXPEDITION, + }, + { + PCI_VENDOR_ID_DELL, + PCI_DEVICE_ID_PERC4E_DI_GUADALUPE, + PCI_VENDOR_ID_DELL, + PCI_SUBSYS_ID_PERC4E_DI_GUADALUPE, + }, + { + PCI_VENDOR_ID_LSI_LOGIC, + PCI_DEVICE_ID_DOBSON, + PCI_ANY_ID, + PCI_ANY_ID, + }, + { + PCI_VENDOR_ID_AMI, + PCI_DEVICE_ID_AMI_MEGARAID3, + PCI_ANY_ID, + PCI_ANY_ID, + }, + { + PCI_VENDOR_ID_LSI_LOGIC, + PCI_DEVICE_ID_AMI_MEGARAID3, + PCI_ANY_ID, + PCI_ANY_ID, + }, + { + PCI_VENDOR_ID_LSI_LOGIC, + PCI_DEVICE_ID_LINDSAY, + PCI_ANY_ID, + PCI_ANY_ID, + }, + {0} /* Terminating entry */ +}; +MODULE_DEVICE_TABLE(pci, pci_id_table_g); + + +static struct pci_driver megaraid_pci_driver = { + .name = "megaraid", + .id_table = pci_id_table_g, + .probe = megaraid_probe_one, + .remove = __devexit_p(megaraid_detach_one), + .shutdown = megaraid_mbox_shutdown, +}; + + + +// definitions for the device attributes for exporting logical drive number +// for a scsi address (Host, Channel, Id, Lun) + +DEVICE_ATTR(megaraid_mbox_app_hndl, S_IRUSR, megaraid_sysfs_show_app_hndl, + NULL); + +// Host template initializer for megaraid mbox sysfs device attributes +static struct device_attribute *megaraid_shost_attrs[] = { + &dev_attr_megaraid_mbox_app_hndl, + NULL, +}; + + +DEVICE_ATTR(megaraid_mbox_ld, S_IRUSR, megaraid_sysfs_show_ldnum, NULL); + +// Host template initializer for megaraid mbox sysfs device attributes +static struct device_attribute *megaraid_sdev_attrs[] = { + &dev_attr_megaraid_mbox_ld, + NULL, +}; + +/** + * megaraid_change_queue_depth - Change the device's queue depth + * @sdev: scsi device struct + * @qdepth: depth to set + * @reason: calling context + * + * Return value: + * actual depth set + */ +static int megaraid_change_queue_depth(struct scsi_device *sdev, int qdepth, + int reason) +{ + if (reason != SCSI_QDEPTH_DEFAULT) + return -EOPNOTSUPP; + + if (qdepth > MBOX_MAX_SCSI_CMDS) + qdepth = MBOX_MAX_SCSI_CMDS; + scsi_adjust_queue_depth(sdev, 0, qdepth); + return sdev->queue_depth; +} + +/* + * Scsi host template for megaraid unified driver + */ +static struct scsi_host_template megaraid_template_g = { + .module = THIS_MODULE, + .name = "LSI Logic MegaRAID driver", + .proc_name = "megaraid", + .queuecommand = megaraid_queue_command, + .eh_abort_handler = megaraid_abort_handler, + .eh_device_reset_handler = megaraid_reset_handler, + .eh_bus_reset_handler = megaraid_reset_handler, + .eh_host_reset_handler = megaraid_reset_handler, + .change_queue_depth = megaraid_change_queue_depth, + .use_clustering = ENABLE_CLUSTERING, + .sdev_attrs = megaraid_sdev_attrs, + .shost_attrs = megaraid_shost_attrs, +}; + + +/** + * megaraid_init - module load hook + * + * We register ourselves as hotplug enabled module and let PCI subsystem + * discover our adapters. + */ +static int __init +megaraid_init(void) +{ + int rval; + + // Announce the driver version + con_log(CL_ANN, (KERN_INFO "megaraid: %s %s\n", MEGARAID_VERSION, + MEGARAID_EXT_VERSION)); + + // check validity of module parameters + if (megaraid_cmd_per_lun > MBOX_MAX_SCSI_CMDS) { + + con_log(CL_ANN, (KERN_WARNING + "megaraid mailbox: max commands per lun reset to %d\n", + MBOX_MAX_SCSI_CMDS)); + + megaraid_cmd_per_lun = MBOX_MAX_SCSI_CMDS; + } + + + // register as a PCI hot-plug driver module + rval = pci_register_driver(&megaraid_pci_driver); + if (rval < 0) { + con_log(CL_ANN, (KERN_WARNING + "megaraid: could not register hotplug support.\n")); + } + + return rval; +} + + +/** + * megaraid_exit - driver unload entry point + * + * We simply unwrap the megaraid_init routine here. + */ +static void __exit +megaraid_exit(void) +{ + con_log(CL_DLEVEL1, (KERN_NOTICE "megaraid: unloading framework\n")); + + // unregister as PCI hotplug driver + pci_unregister_driver(&megaraid_pci_driver); + + return; +} + + +/** + * megaraid_probe_one - PCI hotplug entry point + * @pdev : handle to this controller's PCI configuration space + * @id : pci device id of the class of controllers + * + * This routine should be called whenever a new adapter is detected by the + * PCI hotplug susbsystem. + */ +static int __devinit +megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) +{ + adapter_t *adapter; + + + // detected a new controller + con_log(CL_ANN, (KERN_INFO + "megaraid: probe new device %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", + pdev->vendor, pdev->device, pdev->subsystem_vendor, + pdev->subsystem_device)); + + con_log(CL_ANN, ("bus %d:slot %d:func %d\n", pdev->bus->number, + PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn))); + + if (pci_enable_device(pdev)) { + con_log(CL_ANN, (KERN_WARNING + "megaraid: pci_enable_device failed\n")); + + return -ENODEV; + } + + // Enable bus-mastering on this controller + pci_set_master(pdev); + + // Allocate the per driver initialization structure + adapter = kzalloc(sizeof(adapter_t), GFP_KERNEL); + + if (adapter == NULL) { + con_log(CL_ANN, (KERN_WARNING + "megaraid: out of memory, %s %d.\n", __func__, __LINE__)); + + goto out_probe_one; + } + + + // set up PCI related soft state and other pre-known parameters + adapter->unique_id = pdev->bus->number << 8 | pdev->devfn; + adapter->irq = pdev->irq; + adapter->pdev = pdev; + + atomic_set(&adapter->being_detached, 0); + + // Setup the default DMA mask. This would be changed later on + // depending on hardware capabilities + if (pci_set_dma_mask(adapter->pdev, DMA_BIT_MASK(32)) != 0) { + + con_log(CL_ANN, (KERN_WARNING + "megaraid: pci_set_dma_mask failed:%d\n", __LINE__)); + + goto out_free_adapter; + } + + + // Initialize the synchronization lock for kernel and LLD + spin_lock_init(&adapter->lock); + + // Initialize the command queues: the list of free SCBs and the list + // of pending SCBs. + INIT_LIST_HEAD(&adapter->kscb_pool); + spin_lock_init(SCSI_FREE_LIST_LOCK(adapter)); + + INIT_LIST_HEAD(&adapter->pend_list); + spin_lock_init(PENDING_LIST_LOCK(adapter)); + + INIT_LIST_HEAD(&adapter->completed_list); + spin_lock_init(COMPLETED_LIST_LOCK(adapter)); + + + // Start the mailbox based controller + if (megaraid_init_mbox(adapter) != 0) { + con_log(CL_ANN, (KERN_WARNING + "megaraid: maibox adapter did not initialize\n")); + + goto out_free_adapter; + } + + // Register with LSI Common Management Module + if (megaraid_cmm_register(adapter) != 0) { + + con_log(CL_ANN, (KERN_WARNING + "megaraid: could not register with management module\n")); + + goto out_fini_mbox; + } + + // setup adapter handle in PCI soft state + pci_set_drvdata(pdev, adapter); + + // attach with scsi mid-layer + if (megaraid_io_attach(adapter) != 0) { + + con_log(CL_ANN, (KERN_WARNING "megaraid: io attach failed\n")); + + goto out_cmm_unreg; + } + + return 0; + +out_cmm_unreg: + pci_set_drvdata(pdev, NULL); + megaraid_cmm_unregister(adapter); +out_fini_mbox: + megaraid_fini_mbox(adapter); +out_free_adapter: + kfree(adapter); +out_probe_one: + pci_disable_device(pdev); + + return -ENODEV; +} + + +/** + * megaraid_detach_one - release framework resources and call LLD release routine + * @pdev : handle for our PCI cofiguration space + * + * This routine is called during driver unload. We free all the allocated + * resources and call the corresponding LLD so that it can also release all + * its resources. + * + * This routine is also called from the PCI hotplug system. + */ +static void +megaraid_detach_one(struct pci_dev *pdev) +{ + adapter_t *adapter; + struct Scsi_Host *host; + + + // Start a rollback on this adapter + adapter = pci_get_drvdata(pdev); + + if (!adapter) { + con_log(CL_ANN, (KERN_CRIT + "megaraid: Invalid detach on %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", + pdev->vendor, pdev->device, pdev->subsystem_vendor, + pdev->subsystem_device)); + + return; + } + else { + con_log(CL_ANN, (KERN_NOTICE + "megaraid: detaching device %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", + pdev->vendor, pdev->device, pdev->subsystem_vendor, + pdev->subsystem_device)); + } + + + host = adapter->host; + + // do not allow any more requests from the management module for this + // adapter. + // FIXME: How do we account for the request which might still be + // pending with us? + atomic_set(&adapter->being_detached, 1); + + // detach from the IO sub-system + megaraid_io_detach(adapter); + + // reset the device state in the PCI structure. We check this + // condition when we enter here. If the device state is NULL, + // that would mean the device has already been removed + pci_set_drvdata(pdev, NULL); + + // Unregister from common management module + // + // FIXME: this must return success or failure for conditions if there + // is a command pending with LLD or not. + megaraid_cmm_unregister(adapter); + + // finalize the mailbox based controller and release all resources + megaraid_fini_mbox(adapter); + + kfree(adapter); + + scsi_host_put(host); + + pci_disable_device(pdev); + + return; +} + + +/** + * megaraid_mbox_shutdown - PCI shutdown for megaraid HBA + * @pdev : generic driver model device + * + * Shutdown notification, perform flush cache. + */ +static void +megaraid_mbox_shutdown(struct pci_dev *pdev) +{ + adapter_t *adapter = pci_get_drvdata(pdev); + static int counter; + + if (!adapter) { + con_log(CL_ANN, (KERN_WARNING + "megaraid: null device in shutdown\n")); + return; + } + + // flush caches now + con_log(CL_ANN, (KERN_INFO "megaraid: flushing adapter %d...", + counter++)); + + megaraid_mbox_flush_cache(adapter); + + con_log(CL_ANN, ("done\n")); +} + + +/** + * megaraid_io_attach - attach a device with the IO subsystem + * @adapter : controller's soft state + * + * Attach this device with the IO subsystem. + */ +static int +megaraid_io_attach(adapter_t *adapter) +{ + struct Scsi_Host *host; + + // Initialize SCSI Host structure + host = scsi_host_alloc(&megaraid_template_g, 8); + if (!host) { + con_log(CL_ANN, (KERN_WARNING + "megaraid mbox: scsi_register failed\n")); + + return -1; + } + + SCSIHOST2ADAP(host) = (caddr_t)adapter; + adapter->host = host; + + host->irq = adapter->irq; + host->unique_id = adapter->unique_id; + host->can_queue = adapter->max_cmds; + host->this_id = adapter->init_id; + host->sg_tablesize = adapter->sglen; + host->max_sectors = adapter->max_sectors; + host->cmd_per_lun = adapter->cmd_per_lun; + host->max_channel = adapter->max_channel; + host->max_id = adapter->max_target; + host->max_lun = adapter->max_lun; + + + // notify mid-layer about the new controller + if (scsi_add_host(host, &adapter->pdev->dev)) { + + con_log(CL_ANN, (KERN_WARNING + "megaraid mbox: scsi_add_host failed\n")); + + scsi_host_put(host); + + return -1; + } + + scsi_scan_host(host); + + return 0; +} + + +/** + * megaraid_io_detach - detach a device from the IO subsystem + * @adapter : controller's soft state + * + * Detach this device from the IO subsystem. + */ +static void +megaraid_io_detach(adapter_t *adapter) +{ + struct Scsi_Host *host; + + con_log(CL_DLEVEL1, (KERN_INFO "megaraid: io detach\n")); + + host = adapter->host; + + scsi_remove_host(host); + + return; +} + + +/* + * START: Mailbox Low Level Driver + * + * This is section specific to the single mailbox based controllers + */ + +/** + * megaraid_init_mbox - initialize controller + * @adapter : our soft state + * + * - Allocate 16-byte aligned mailbox memory for firmware handshake + * - Allocate controller's memory resources + * - Find out all initialization data + * - Allocate memory required for all the commands + * - Use internal library of FW routines, build up complete soft state + */ +static int __devinit +megaraid_init_mbox(adapter_t *adapter) +{ + struct pci_dev *pdev; + mraid_device_t *raid_dev; + int i; + uint32_t magic64; + + + adapter->ito = MBOX_TIMEOUT; + pdev = adapter->pdev; + + /* + * Allocate and initialize the init data structure for mailbox + * controllers + */ + raid_dev = kzalloc(sizeof(mraid_device_t), GFP_KERNEL); + if (raid_dev == NULL) return -1; + + + /* + * Attach the adapter soft state to raid device soft state + */ + adapter->raid_device = (caddr_t)raid_dev; + raid_dev->fast_load = megaraid_fast_load; + + + // our baseport + raid_dev->baseport = pci_resource_start(pdev, 0); + + if (pci_request_regions(pdev, "MegaRAID: LSI Logic Corporation") != 0) { + + con_log(CL_ANN, (KERN_WARNING + "megaraid: mem region busy\n")); + + goto out_free_raid_dev; + } + + raid_dev->baseaddr = ioremap_nocache(raid_dev->baseport, 128); + + if (!raid_dev->baseaddr) { + + con_log(CL_ANN, (KERN_WARNING + "megaraid: could not map hba memory\n") ); + + goto out_release_regions; + } + + /* initialize the mutual exclusion lock for the mailbox */ + spin_lock_init(&raid_dev->mailbox_lock); + + /* allocate memory required for commands */ + if (megaraid_alloc_cmd_packets(adapter) != 0) + goto out_iounmap; + + /* + * Issue SYNC cmd to flush the pending cmds in the adapter + * and initialize its internal state + */ + + if (megaraid_mbox_fire_sync_cmd(adapter)) + con_log(CL_ANN, ("megaraid: sync cmd failed\n")); + + /* + * Setup the rest of the soft state using the library of + * FW routines + */ + + /* request IRQ and register the interrupt service routine */ + if (request_irq(adapter->irq, megaraid_isr, IRQF_SHARED, "megaraid", + adapter)) { + + con_log(CL_ANN, (KERN_WARNING + "megaraid: Couldn't register IRQ %d!\n", adapter->irq)); + goto out_alloc_cmds; + + } + + // Product info + if (megaraid_mbox_product_info(adapter) != 0) + goto out_free_irq; + + // Do we support extended CDBs + adapter->max_cdb_sz = 10; + if (megaraid_mbox_extended_cdb(adapter) == 0) { + adapter->max_cdb_sz = 16; + } + + /* + * Do we support cluster environment, if we do, what is the initiator + * id. + * NOTE: In a non-cluster aware firmware environment, the LLD should + * return 7 as initiator id. + */ + adapter->ha = 0; + adapter->init_id = -1; + if (megaraid_mbox_support_ha(adapter, &adapter->init_id) == 0) { + adapter->ha = 1; + } + + /* + * Prepare the device ids array to have the mapping between the kernel + * device address and megaraid device address. + * We export the physical devices on their actual addresses. The + * logical drives are exported on a virtual SCSI channel + */ + megaraid_mbox_setup_device_map(adapter); + + // If the firmware supports random deletion, update the device id map + if (megaraid_mbox_support_random_del(adapter)) { + + // Change the logical drives numbers in device_ids array one + // slot in device_ids is reserved for target id, that's why + // "<=" below + for (i = 0; i <= MAX_LOGICAL_DRIVES_40LD; i++) { + adapter->device_ids[adapter->max_channel][i] += 0x80; + } + adapter->device_ids[adapter->max_channel][adapter->init_id] = + 0xFF; + + raid_dev->random_del_supported = 1; + } + + /* + * find out the maximum number of scatter-gather elements supported by + * this firmware + */ + adapter->sglen = megaraid_mbox_get_max_sg(adapter); + + // enumerate RAID and SCSI channels so that all devices on SCSI + // channels can later be exported, including disk devices + megaraid_mbox_enum_raid_scsi(adapter); + + /* + * Other parameters required by upper layer + * + * maximum number of sectors per IO command + */ + adapter->max_sectors = megaraid_max_sectors; + + /* + * number of queued commands per LUN. + */ + adapter->cmd_per_lun = megaraid_cmd_per_lun; + + /* + * Allocate resources required to issue FW calls, when sysfs is + * accessed + */ + if (megaraid_sysfs_alloc_resources(adapter) != 0) + goto out_free_irq; + + // Set the DMA mask to 64-bit. All supported controllers as capable of + // DMA in this range + pci_read_config_dword(adapter->pdev, PCI_CONF_AMISIG64, &magic64); + + if (((magic64 == HBA_SIGNATURE_64_BIT) && + ((adapter->pdev->subsystem_device != + PCI_SUBSYS_ID_MEGARAID_SATA_150_6) && + (adapter->pdev->subsystem_device != + PCI_SUBSYS_ID_MEGARAID_SATA_150_4))) || + (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && + adapter->pdev->device == PCI_DEVICE_ID_VERDE) || + (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && + adapter->pdev->device == PCI_DEVICE_ID_DOBSON) || + (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && + adapter->pdev->device == PCI_DEVICE_ID_LINDSAY) || + (adapter->pdev->vendor == PCI_VENDOR_ID_DELL && + adapter->pdev->device == PCI_DEVICE_ID_PERC4_DI_EVERGLADES) || + (adapter->pdev->vendor == PCI_VENDOR_ID_DELL && + adapter->pdev->device == PCI_DEVICE_ID_PERC4E_DI_KOBUK)) { + if (pci_set_dma_mask(adapter->pdev, DMA_BIT_MASK(64))) { + con_log(CL_ANN, (KERN_WARNING + "megaraid: DMA mask for 64-bit failed\n")); + + if (pci_set_dma_mask (adapter->pdev, DMA_BIT_MASK(32))) { + con_log(CL_ANN, (KERN_WARNING + "megaraid: 32-bit DMA mask failed\n")); + goto out_free_sysfs_res; + } + } + } + + // setup tasklet for DPC + tasklet_init(&adapter->dpc_h, megaraid_mbox_dpc, + (unsigned long)adapter); + + con_log(CL_DLEVEL1, (KERN_INFO + "megaraid mbox hba successfully initialized\n")); + + return 0; + +out_free_sysfs_res: + megaraid_sysfs_free_resources(adapter); +out_free_irq: + free_irq(adapter->irq, adapter); +out_alloc_cmds: + megaraid_free_cmd_packets(adapter); +out_iounmap: + iounmap(raid_dev->baseaddr); +out_release_regions: + pci_release_regions(pdev); +out_free_raid_dev: + kfree(raid_dev); + + return -1; +} + + +/** + * megaraid_fini_mbox - undo controller initialization + * @adapter : our soft state + */ +static void +megaraid_fini_mbox(adapter_t *adapter) +{ + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + + // flush all caches + megaraid_mbox_flush_cache(adapter); + + tasklet_kill(&adapter->dpc_h); + + megaraid_sysfs_free_resources(adapter); + + megaraid_free_cmd_packets(adapter); + + free_irq(adapter->irq, adapter); + + iounmap(raid_dev->baseaddr); + + pci_release_regions(adapter->pdev); + + kfree(raid_dev); + + return; +} + + +/** + * megaraid_alloc_cmd_packets - allocate shared mailbox + * @adapter : soft state of the raid controller + * + * Allocate and align the shared mailbox. This maibox is used to issue + * all the commands. For IO based controllers, the mailbox is also regsitered + * with the FW. Allocate memory for all commands as well. + * This is our big allocator. + */ +static int +megaraid_alloc_cmd_packets(adapter_t *adapter) +{ + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + struct pci_dev *pdev; + unsigned long align; + scb_t *scb; + mbox_ccb_t *ccb; + struct mraid_pci_blk *epthru_pci_blk; + struct mraid_pci_blk *sg_pci_blk; + struct mraid_pci_blk *mbox_pci_blk; + int i; + + pdev = adapter->pdev; + + /* + * Setup the mailbox + * Allocate the common 16-byte aligned memory for the handshake + * mailbox. + */ + raid_dev->una_mbox64 = pci_alloc_consistent(adapter->pdev, + sizeof(mbox64_t), &raid_dev->una_mbox64_dma); + + if (!raid_dev->una_mbox64) { + con_log(CL_ANN, (KERN_WARNING + "megaraid: out of memory, %s %d\n", __func__, + __LINE__)); + return -1; + } + memset(raid_dev->una_mbox64, 0, sizeof(mbox64_t)); + + /* + * Align the mailbox at 16-byte boundary + */ + raid_dev->mbox = &raid_dev->una_mbox64->mbox32; + + raid_dev->mbox = (mbox_t *)((((unsigned long)raid_dev->mbox) + 15) & + (~0UL ^ 0xFUL)); + + raid_dev->mbox64 = (mbox64_t *)(((unsigned long)raid_dev->mbox) - 8); + + align = ((void *)raid_dev->mbox - + ((void *)&raid_dev->una_mbox64->mbox32)); + + raid_dev->mbox_dma = (unsigned long)raid_dev->una_mbox64_dma + 8 + + align; + + // Allocate memory for commands issued internally + adapter->ibuf = pci_alloc_consistent(pdev, MBOX_IBUF_SIZE, + &adapter->ibuf_dma_h); + if (!adapter->ibuf) { + + con_log(CL_ANN, (KERN_WARNING + "megaraid: out of memory, %s %d\n", __func__, + __LINE__)); + + goto out_free_common_mbox; + } + memset(adapter->ibuf, 0, MBOX_IBUF_SIZE); + + // Allocate memory for our SCSI Command Blocks and their associated + // memory + + /* + * Allocate memory for the base list of scb. Later allocate memory for + * CCBs and embedded components of each CCB and point the pointers in + * scb to the allocated components + * NOTE: The code to allocate SCB will be duplicated in all the LLD + * since the calling routine does not yet know the number of available + * commands. + */ + adapter->kscb_list = kcalloc(MBOX_MAX_SCSI_CMDS, sizeof(scb_t), GFP_KERNEL); + + if (adapter->kscb_list == NULL) { + con_log(CL_ANN, (KERN_WARNING + "megaraid: out of memory, %s %d\n", __func__, + __LINE__)); + goto out_free_ibuf; + } + + // memory allocation for our command packets + if (megaraid_mbox_setup_dma_pools(adapter) != 0) { + con_log(CL_ANN, (KERN_WARNING + "megaraid: out of memory, %s %d\n", __func__, + __LINE__)); + goto out_free_scb_list; + } + + // Adjust the scb pointers and link in the free pool + epthru_pci_blk = raid_dev->epthru_pool; + sg_pci_blk = raid_dev->sg_pool; + mbox_pci_blk = raid_dev->mbox_pool; + + for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { + scb = adapter->kscb_list + i; + ccb = raid_dev->ccb_list + i; + + ccb->mbox = (mbox_t *)(mbox_pci_blk[i].vaddr + 16); + ccb->raw_mbox = (uint8_t *)ccb->mbox; + ccb->mbox64 = (mbox64_t *)(mbox_pci_blk[i].vaddr + 8); + ccb->mbox_dma_h = (unsigned long)mbox_pci_blk[i].dma_addr + 16; + + // make sure the mailbox is aligned properly + if (ccb->mbox_dma_h & 0x0F) { + con_log(CL_ANN, (KERN_CRIT + "megaraid mbox: not aligned on 16-bytes\n")); + + goto out_teardown_dma_pools; + } + + ccb->epthru = (mraid_epassthru_t *) + epthru_pci_blk[i].vaddr; + ccb->epthru_dma_h = epthru_pci_blk[i].dma_addr; + ccb->pthru = (mraid_passthru_t *)ccb->epthru; + ccb->pthru_dma_h = ccb->epthru_dma_h; + + + ccb->sgl64 = (mbox_sgl64 *)sg_pci_blk[i].vaddr; + ccb->sgl_dma_h = sg_pci_blk[i].dma_addr; + ccb->sgl32 = (mbox_sgl32 *)ccb->sgl64; + + scb->ccb = (caddr_t)ccb; + scb->gp = 0; + + scb->sno = i; // command index + + scb->scp = NULL; + scb->state = SCB_FREE; + scb->dma_direction = PCI_DMA_NONE; + scb->dma_type = MRAID_DMA_NONE; + scb->dev_channel = -1; + scb->dev_target = -1; + + // put scb in the free pool + list_add_tail(&scb->list, &adapter->kscb_pool); + } + + return 0; + +out_teardown_dma_pools: + megaraid_mbox_teardown_dma_pools(adapter); +out_free_scb_list: + kfree(adapter->kscb_list); +out_free_ibuf: + pci_free_consistent(pdev, MBOX_IBUF_SIZE, (void *)adapter->ibuf, + adapter->ibuf_dma_h); +out_free_common_mbox: + pci_free_consistent(adapter->pdev, sizeof(mbox64_t), + (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); + + return -1; +} + + +/** + * megaraid_free_cmd_packets - free memory + * @adapter : soft state of the raid controller + * + * Release memory resources allocated for commands. + */ +static void +megaraid_free_cmd_packets(adapter_t *adapter) +{ + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + + megaraid_mbox_teardown_dma_pools(adapter); + + kfree(adapter->kscb_list); + + pci_free_consistent(adapter->pdev, MBOX_IBUF_SIZE, + (void *)adapter->ibuf, adapter->ibuf_dma_h); + + pci_free_consistent(adapter->pdev, sizeof(mbox64_t), + (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); + return; +} + + +/** + * megaraid_mbox_setup_dma_pools - setup dma pool for command packets + * @adapter : HBA soft state + * + * Setup the dma pools for mailbox, passthru and extended passthru structures, + * and scatter-gather lists. + */ +static int +megaraid_mbox_setup_dma_pools(adapter_t *adapter) +{ + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + struct mraid_pci_blk *epthru_pci_blk; + struct mraid_pci_blk *sg_pci_blk; + struct mraid_pci_blk *mbox_pci_blk; + int i; + + + + // Allocate memory for 16-bytes aligned mailboxes + raid_dev->mbox_pool_handle = pci_pool_create("megaraid mbox pool", + adapter->pdev, + sizeof(mbox64_t) + 16, + 16, 0); + + if (raid_dev->mbox_pool_handle == NULL) { + goto fail_setup_dma_pool; + } + + mbox_pci_blk = raid_dev->mbox_pool; + for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { + mbox_pci_blk[i].vaddr = pci_pool_alloc( + raid_dev->mbox_pool_handle, + GFP_KERNEL, + &mbox_pci_blk[i].dma_addr); + if (!mbox_pci_blk[i].vaddr) { + goto fail_setup_dma_pool; + } + } + + /* + * Allocate memory for each embedded passthru strucuture pointer + * Request for a 128 bytes aligned structure for each passthru command + * structure + * Since passthru and extended passthru commands are exclusive, they + * share common memory pool. Passthru structures piggyback on memory + * allocted to extended passthru since passthru is smaller of the two + */ + raid_dev->epthru_pool_handle = pci_pool_create("megaraid mbox pthru", + adapter->pdev, sizeof(mraid_epassthru_t), 128, 0); + + if (raid_dev->epthru_pool_handle == NULL) { + goto fail_setup_dma_pool; + } + + epthru_pci_blk = raid_dev->epthru_pool; + for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { + epthru_pci_blk[i].vaddr = pci_pool_alloc( + raid_dev->epthru_pool_handle, + GFP_KERNEL, + &epthru_pci_blk[i].dma_addr); + if (!epthru_pci_blk[i].vaddr) { + goto fail_setup_dma_pool; + } + } + + + // Allocate memory for each scatter-gather list. Request for 512 bytes + // alignment for each sg list + raid_dev->sg_pool_handle = pci_pool_create("megaraid mbox sg", + adapter->pdev, + sizeof(mbox_sgl64) * MBOX_MAX_SG_SIZE, + 512, 0); + + if (raid_dev->sg_pool_handle == NULL) { + goto fail_setup_dma_pool; + } + + sg_pci_blk = raid_dev->sg_pool; + for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { + sg_pci_blk[i].vaddr = pci_pool_alloc( + raid_dev->sg_pool_handle, + GFP_KERNEL, + &sg_pci_blk[i].dma_addr); + if (!sg_pci_blk[i].vaddr) { + goto fail_setup_dma_pool; + } + } + + return 0; + +fail_setup_dma_pool: + megaraid_mbox_teardown_dma_pools(adapter); + return -1; +} + + +/** + * megaraid_mbox_teardown_dma_pools - teardown dma pools for command packets + * @adapter : HBA soft state + * + * Teardown the dma pool for mailbox, passthru and extended passthru + * structures, and scatter-gather lists. + */ +static void +megaraid_mbox_teardown_dma_pools(adapter_t *adapter) +{ + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + struct mraid_pci_blk *epthru_pci_blk; + struct mraid_pci_blk *sg_pci_blk; + struct mraid_pci_blk *mbox_pci_blk; + int i; + + + sg_pci_blk = raid_dev->sg_pool; + for (i = 0; i < MBOX_MAX_SCSI_CMDS && sg_pci_blk[i].vaddr; i++) { + pci_pool_free(raid_dev->sg_pool_handle, sg_pci_blk[i].vaddr, + sg_pci_blk[i].dma_addr); + } + if (raid_dev->sg_pool_handle) + pci_pool_destroy(raid_dev->sg_pool_handle); + + + epthru_pci_blk = raid_dev->epthru_pool; + for (i = 0; i < MBOX_MAX_SCSI_CMDS && epthru_pci_blk[i].vaddr; i++) { + pci_pool_free(raid_dev->epthru_pool_handle, + epthru_pci_blk[i].vaddr, epthru_pci_blk[i].dma_addr); + } + if (raid_dev->epthru_pool_handle) + pci_pool_destroy(raid_dev->epthru_pool_handle); + + + mbox_pci_blk = raid_dev->mbox_pool; + for (i = 0; i < MBOX_MAX_SCSI_CMDS && mbox_pci_blk[i].vaddr; i++) { + pci_pool_free(raid_dev->mbox_pool_handle, + mbox_pci_blk[i].vaddr, mbox_pci_blk[i].dma_addr); + } + if (raid_dev->mbox_pool_handle) + pci_pool_destroy(raid_dev->mbox_pool_handle); + + return; +} + + +/** + * megaraid_alloc_scb - detach and return a scb from the free list + * @adapter : controller's soft state + * @scp : pointer to the scsi command to be executed + * + * Return the scb from the head of the free list. %NULL if there are none + * available. + */ +static scb_t * +megaraid_alloc_scb(adapter_t *adapter, struct scsi_cmnd *scp) +{ + struct list_head *head = &adapter->kscb_pool; + scb_t *scb = NULL; + unsigned long flags; + + // detach scb from free pool + spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); + + if (list_empty(head)) { + spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); + return NULL; + } + + scb = list_entry(head->next, scb_t, list); + list_del_init(&scb->list); + + spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); + + scb->state = SCB_ACTIVE; + scb->scp = scp; + scb->dma_type = MRAID_DMA_NONE; + + return scb; +} + + +/** + * megaraid_dealloc_scb - return the scb to the free pool + * @adapter : controller's soft state + * @scb : scb to be freed + * + * Return the scb back to the free list of scbs. The caller must 'flush' the + * SCB before calling us. E.g., performing pci_unamp and/or pci_sync etc. + * NOTE NOTE: Make sure the scb is not on any list before calling this + * routine. + */ +static inline void +megaraid_dealloc_scb(adapter_t *adapter, scb_t *scb) +{ + unsigned long flags; + + // put scb in the free pool + scb->state = SCB_FREE; + scb->scp = NULL; + spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); + + list_add(&scb->list, &adapter->kscb_pool); + + spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); + + return; +} + + +/** + * megaraid_mbox_mksgl - make the scatter-gather list + * @adapter : controller's soft state + * @scb : scsi control block + * + * Prepare the scatter-gather list. + */ +static int +megaraid_mbox_mksgl(adapter_t *adapter, scb_t *scb) +{ + struct scatterlist *sgl; + mbox_ccb_t *ccb; + struct scsi_cmnd *scp; + int sgcnt; + int i; + + + scp = scb->scp; + ccb = (mbox_ccb_t *)scb->ccb; + + sgcnt = scsi_dma_map(scp); + BUG_ON(sgcnt < 0 || sgcnt > adapter->sglen); + + // no mapping required if no data to be transferred + if (!sgcnt) + return 0; + + scb->dma_type = MRAID_DMA_WSG; + + scsi_for_each_sg(scp, sgl, sgcnt, i) { + ccb->sgl64[i].address = sg_dma_address(sgl); + ccb->sgl64[i].length = sg_dma_len(sgl); + } + + // Return count of SG nodes + return sgcnt; +} + + +/** + * mbox_post_cmd - issue a mailbox command + * @adapter : controller's soft state + * @scb : command to be issued + * + * Post the command to the controller if mailbox is available. + */ +static int +mbox_post_cmd(adapter_t *adapter, scb_t *scb) +{ + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + mbox64_t *mbox64; + mbox_t *mbox; + mbox_ccb_t *ccb; + unsigned long flags; + unsigned int i = 0; + + + ccb = (mbox_ccb_t *)scb->ccb; + mbox = raid_dev->mbox; + mbox64 = raid_dev->mbox64; + + /* + * Check for busy mailbox. If it is, return failure - the caller + * should retry later. + */ + spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); + + if (unlikely(mbox->busy)) { + do { + udelay(1); + i++; + rmb(); + } while(mbox->busy && (i < max_mbox_busy_wait)); + + if (mbox->busy) { + + spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); + + return -1; + } + } + + + // Copy this command's mailbox data into "adapter's" mailbox + memcpy((caddr_t)mbox64, (caddr_t)ccb->mbox64, 22); + mbox->cmdid = scb->sno; + + adapter->outstanding_cmds++; + + if (scb->dma_direction == PCI_DMA_TODEVICE) + pci_dma_sync_sg_for_device(adapter->pdev, + scsi_sglist(scb->scp), + scsi_sg_count(scb->scp), + PCI_DMA_TODEVICE); + + mbox->busy = 1; // Set busy + mbox->poll = 0; + mbox->ack = 0; + wmb(); + + WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); + + spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); + + return 0; +} + + +/** + * megaraid_queue_command - generic queue entry point for all LLDs + * @scp : pointer to the scsi command to be executed + * @done : callback routine to be called after the cmd has be completed + * + * Queue entry point for mailbox based controllers. + */ +static int +megaraid_queue_command_lck(struct scsi_cmnd *scp, void (*done)(struct scsi_cmnd *)) +{ + adapter_t *adapter; + scb_t *scb; + int if_busy; + + adapter = SCP2ADAPTER(scp); + scp->scsi_done = done; + scp->result = 0; + + /* + * Allocate and build a SCB request + * if_busy flag will be set if megaraid_mbox_build_cmd() command could + * not allocate scb. We will return non-zero status in that case. + * NOTE: scb can be null even though certain commands completed + * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, it would + * return 0 in that case, and we would do the callback right away. + */ + if_busy = 0; + scb = megaraid_mbox_build_cmd(adapter, scp, &if_busy); + if (!scb) { // command already completed + done(scp); + return 0; + } + + megaraid_mbox_runpendq(adapter, scb); + return if_busy; +} + +static DEF_SCSI_QCMD(megaraid_queue_command) + +/** + * megaraid_mbox_build_cmd - transform the mid-layer scsi commands + * @adapter : controller's soft state + * @scp : mid-layer scsi command pointer + * @busy : set if request could not be completed because of lack of + * resources + * + * Transform the mid-layer scsi command to megaraid firmware lingua. + * Convert the command issued by mid-layer to format understood by megaraid + * firmware. We also complete certain commands without sending them to firmware. + */ +static scb_t * +megaraid_mbox_build_cmd(adapter_t *adapter, struct scsi_cmnd *scp, int *busy) +{ + mraid_device_t *rdev = ADAP2RAIDDEV(adapter); + int channel; + int target; + int islogical; + mbox_ccb_t *ccb; + mraid_passthru_t *pthru; + mbox64_t *mbox64; + mbox_t *mbox; + scb_t *scb; + char skip[] = "skipping"; + char scan[] = "scanning"; + char *ss; + + + /* + * Get the appropriate device map for the device this command is + * intended for + */ + MRAID_GET_DEVICE_MAP(adapter, scp, channel, target, islogical); + + /* + * Logical drive commands + */ + if (islogical) { + switch (scp->cmnd[0]) { + case TEST_UNIT_READY: + /* + * Do we support clustering and is the support enabled + * If no, return success always + */ + if (!adapter->ha) { + scp->result = (DID_OK << 16); + return NULL; + } + + if (!(scb = megaraid_alloc_scb(adapter, scp))) { + scp->result = (DID_ERROR << 16); + *busy = 1; + return NULL; + } + + scb->dma_direction = scp->sc_data_direction; + scb->dev_channel = 0xFF; + scb->dev_target = target; + ccb = (mbox_ccb_t *)scb->ccb; + + /* + * The command id will be provided by the command + * issuance routine + */ + ccb->raw_mbox[0] = CLUSTER_CMD; + ccb->raw_mbox[2] = RESERVATION_STATUS; + ccb->raw_mbox[3] = target; + + return scb; + + case MODE_SENSE: + { + struct scatterlist *sgl; + caddr_t vaddr; + + sgl = scsi_sglist(scp); + if (sg_page(sgl)) { + vaddr = (caddr_t) sg_virt(&sgl[0]); + + memset(vaddr, 0, scp->cmnd[4]); + } + else { + con_log(CL_ANN, (KERN_WARNING + "megaraid mailbox: invalid sg:%d\n", + __LINE__)); + } + } + scp->result = (DID_OK << 16); + return NULL; + + case INQUIRY: + /* + * Display the channel scan for logical drives + * Do not display scan for a channel if already done. + */ + if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { + + con_log(CL_ANN, (KERN_INFO + "scsi[%d]: scanning scsi channel %d", + adapter->host->host_no, + SCP2CHANNEL(scp))); + + con_log(CL_ANN, ( + " [virtual] for logical drives\n")); + + rdev->last_disp |= (1L << SCP2CHANNEL(scp)); + } + + if (scp->cmnd[1] & MEGA_SCSI_INQ_EVPD) { + scp->sense_buffer[0] = 0x70; + scp->sense_buffer[2] = ILLEGAL_REQUEST; + scp->sense_buffer[12] = MEGA_INVALID_FIELD_IN_CDB; + scp->result = CHECK_CONDITION << 1; + return NULL; + } + + /* Fall through */ + + case READ_CAPACITY: + /* + * Do not allow LUN > 0 for logical drives and + * requests for more than 40 logical drives + */ + if (SCP2LUN(scp)) { + scp->result = (DID_BAD_TARGET << 16); + return NULL; + } + if ((target % 0x80) >= MAX_LOGICAL_DRIVES_40LD) { + scp->result = (DID_BAD_TARGET << 16); + return NULL; + } + + + /* Allocate a SCB and initialize passthru */ + if (!(scb = megaraid_alloc_scb(adapter, scp))) { + scp->result = (DID_ERROR << 16); + *busy = 1; + return NULL; + } + + ccb = (mbox_ccb_t *)scb->ccb; + scb->dev_channel = 0xFF; + scb->dev_target = target; + pthru = ccb->pthru; + mbox = ccb->mbox; + mbox64 = ccb->mbox64; + + pthru->timeout = 0; + pthru->ars = 1; + pthru->reqsenselen = 14; + pthru->islogical = 1; + pthru->logdrv = target; + pthru->cdblen = scp->cmd_len; + memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); + + mbox->cmd = MBOXCMD_PASSTHRU64; + scb->dma_direction = scp->sc_data_direction; + + pthru->dataxferlen = scsi_bufflen(scp); + pthru->dataxferaddr = ccb->sgl_dma_h; + pthru->numsge = megaraid_mbox_mksgl(adapter, + scb); + + mbox->xferaddr = 0xFFFFFFFF; + mbox64->xferaddr_lo = (uint32_t )ccb->pthru_dma_h; + mbox64->xferaddr_hi = 0; + + return scb; + + case READ_6: + case WRITE_6: + case READ_10: + case WRITE_10: + case READ_12: + case WRITE_12: + + /* + * Allocate a SCB and initialize mailbox + */ + if (!(scb = megaraid_alloc_scb(adapter, scp))) { + scp->result = (DID_ERROR << 16); + *busy = 1; + return NULL; + } + ccb = (mbox_ccb_t *)scb->ccb; + scb->dev_channel = 0xFF; + scb->dev_target = target; + mbox = ccb->mbox; + mbox64 = ccb->mbox64; + mbox->logdrv = target; + + /* + * A little HACK: 2nd bit is zero for all scsi read + * commands and is set for all scsi write commands + */ + mbox->cmd = (scp->cmnd[0] & 0x02) ? MBOXCMD_LWRITE64: + MBOXCMD_LREAD64 ; + + /* + * 6-byte READ(0x08) or WRITE(0x0A) cdb + */ + if (scp->cmd_len == 6) { + mbox->numsectors = (uint32_t)scp->cmnd[4]; + mbox->lba = + ((uint32_t)scp->cmnd[1] << 16) | + ((uint32_t)scp->cmnd[2] << 8) | + (uint32_t)scp->cmnd[3]; + + mbox->lba &= 0x1FFFFF; + } + + /* + * 10-byte READ(0x28) or WRITE(0x2A) cdb + */ + else if (scp->cmd_len == 10) { + mbox->numsectors = + (uint32_t)scp->cmnd[8] | + ((uint32_t)scp->cmnd[7] << 8); + mbox->lba = + ((uint32_t)scp->cmnd[2] << 24) | + ((uint32_t)scp->cmnd[3] << 16) | + ((uint32_t)scp->cmnd[4] << 8) | + (uint32_t)scp->cmnd[5]; + } + + /* + * 12-byte READ(0xA8) or WRITE(0xAA) cdb + */ + else if (scp->cmd_len == 12) { + mbox->lba = + ((uint32_t)scp->cmnd[2] << 24) | + ((uint32_t)scp->cmnd[3] << 16) | + ((uint32_t)scp->cmnd[4] << 8) | + (uint32_t)scp->cmnd[5]; + + mbox->numsectors = + ((uint32_t)scp->cmnd[6] << 24) | + ((uint32_t)scp->cmnd[7] << 16) | + ((uint32_t)scp->cmnd[8] << 8) | + (uint32_t)scp->cmnd[9]; + } + else { + con_log(CL_ANN, (KERN_WARNING + "megaraid: unsupported CDB length\n")); + + megaraid_dealloc_scb(adapter, scb); + + scp->result = (DID_ERROR << 16); + return NULL; + } + + scb->dma_direction = scp->sc_data_direction; + + // Calculate Scatter-Gather info + mbox64->xferaddr_lo = (uint32_t )ccb->sgl_dma_h; + mbox->numsge = megaraid_mbox_mksgl(adapter, + scb); + mbox->xferaddr = 0xFFFFFFFF; + mbox64->xferaddr_hi = 0; + + return scb; + + case RESERVE: + case RELEASE: + /* + * Do we support clustering and is the support enabled + */ + if (!adapter->ha) { + scp->result = (DID_BAD_TARGET << 16); + return NULL; + } + + /* + * Allocate a SCB and initialize mailbox + */ + if (!(scb = megaraid_alloc_scb(adapter, scp))) { + scp->result = (DID_ERROR << 16); + *busy = 1; + return NULL; + } + + ccb = (mbox_ccb_t *)scb->ccb; + scb->dev_channel = 0xFF; + scb->dev_target = target; + ccb->raw_mbox[0] = CLUSTER_CMD; + ccb->raw_mbox[2] = (scp->cmnd[0] == RESERVE) ? + RESERVE_LD : RELEASE_LD; + + ccb->raw_mbox[3] = target; + scb->dma_direction = scp->sc_data_direction; + + return scb; + + default: + scp->result = (DID_BAD_TARGET << 16); + return NULL; + } + } + else { // Passthru device commands + + // Do not allow access to target id > 15 or LUN > 7 + if (target > 15 || SCP2LUN(scp) > 7) { + scp->result = (DID_BAD_TARGET << 16); + return NULL; + } + + // if fast load option was set and scan for last device is + // over, reset the fast_load flag so that during a possible + // next scan, devices can be made available + if (rdev->fast_load && (target == 15) && + (SCP2CHANNEL(scp) == adapter->max_channel -1)) { + + con_log(CL_ANN, (KERN_INFO + "megaraid[%d]: physical device scan re-enabled\n", + adapter->host->host_no)); + rdev->fast_load = 0; + } + + /* + * Display the channel scan for physical devices + */ + if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { + + ss = rdev->fast_load ? skip : scan; + + con_log(CL_ANN, (KERN_INFO + "scsi[%d]: %s scsi channel %d [Phy %d]", + adapter->host->host_no, ss, SCP2CHANNEL(scp), + channel)); + + con_log(CL_ANN, ( + " for non-raid devices\n")); + + rdev->last_disp |= (1L << SCP2CHANNEL(scp)); + } + + // disable channel sweep if fast load option given + if (rdev->fast_load) { + scp->result = (DID_BAD_TARGET << 16); + return NULL; + } + + // Allocate a SCB and initialize passthru + if (!(scb = megaraid_alloc_scb(adapter, scp))) { + scp->result = (DID_ERROR << 16); + *busy = 1; + return NULL; + } + + ccb = (mbox_ccb_t *)scb->ccb; + scb->dev_channel = channel; + scb->dev_target = target; + scb->dma_direction = scp->sc_data_direction; + mbox = ccb->mbox; + mbox64 = ccb->mbox64; + + // Does this firmware support extended CDBs + if (adapter->max_cdb_sz == 16) { + mbox->cmd = MBOXCMD_EXTPTHRU; + + megaraid_mbox_prepare_epthru(adapter, scb, scp); + + mbox64->xferaddr_lo = (uint32_t)ccb->epthru_dma_h; + mbox64->xferaddr_hi = 0; + mbox->xferaddr = 0xFFFFFFFF; + } + else { + mbox->cmd = MBOXCMD_PASSTHRU64; + + megaraid_mbox_prepare_pthru(adapter, scb, scp); + + mbox64->xferaddr_lo = (uint32_t)ccb->pthru_dma_h; + mbox64->xferaddr_hi = 0; + mbox->xferaddr = 0xFFFFFFFF; + } + return scb; + } + + // NOT REACHED +} + + +/** + * megaraid_mbox_runpendq - execute commands queued in the pending queue + * @adapter : controller's soft state + * @scb_q : SCB to be queued in the pending list + * + * Scan the pending list for commands which are not yet issued and try to + * post to the controller. The SCB can be a null pointer, which would indicate + * no SCB to be queue, just try to execute the ones in the pending list. + * + * NOTE: We do not actually traverse the pending list. The SCBs are plucked + * out from the head of the pending list. If it is successfully issued, the + * next SCB is at the head now. + */ +static void +megaraid_mbox_runpendq(adapter_t *adapter, scb_t *scb_q) +{ + scb_t *scb; + unsigned long flags; + + spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); + + if (scb_q) { + scb_q->state = SCB_PENDQ; + list_add_tail(&scb_q->list, &adapter->pend_list); + } + + // if the adapter in not in quiescent mode, post the commands to FW + if (adapter->quiescent) { + spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); + return; + } + + while (!list_empty(&adapter->pend_list)) { + + assert_spin_locked(PENDING_LIST_LOCK(adapter)); + + scb = list_entry(adapter->pend_list.next, scb_t, list); + + // remove the scb from the pending list and try to + // issue. If we are unable to issue it, put back in + // the pending list and return + + list_del_init(&scb->list); + + spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); + + // if mailbox was busy, return SCB back to pending + // list. Make sure to add at the head, since that's + // where it would have been removed from + + scb->state = SCB_ISSUED; + + if (mbox_post_cmd(adapter, scb) != 0) { + + spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); + + scb->state = SCB_PENDQ; + + list_add(&scb->list, &adapter->pend_list); + + spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), + flags); + + return; + } + + spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); + } + + spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); + + + return; +} + + +/** + * megaraid_mbox_prepare_pthru - prepare a command for physical devices + * @adapter : pointer to controller's soft state + * @scb : scsi control block + * @scp : scsi command from the mid-layer + * + * Prepare a command for the scsi physical devices. + */ +static void +megaraid_mbox_prepare_pthru(adapter_t *adapter, scb_t *scb, + struct scsi_cmnd *scp) +{ + mbox_ccb_t *ccb; + mraid_passthru_t *pthru; + uint8_t channel; + uint8_t target; + + ccb = (mbox_ccb_t *)scb->ccb; + pthru = ccb->pthru; + channel = scb->dev_channel; + target = scb->dev_target; + + // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout + pthru->timeout = 4; + pthru->ars = 1; + pthru->islogical = 0; + pthru->channel = 0; + pthru->target = (channel << 4) | target; + pthru->logdrv = SCP2LUN(scp); + pthru->reqsenselen = 14; + pthru->cdblen = scp->cmd_len; + + memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); + + if (scsi_bufflen(scp)) { + pthru->dataxferlen = scsi_bufflen(scp); + pthru->dataxferaddr = ccb->sgl_dma_h; + pthru->numsge = megaraid_mbox_mksgl(adapter, scb); + } + else { + pthru->dataxferaddr = 0; + pthru->dataxferlen = 0; + pthru->numsge = 0; + } + return; +} + + +/** + * megaraid_mbox_prepare_epthru - prepare a command for physical devices + * @adapter : pointer to controller's soft state + * @scb : scsi control block + * @scp : scsi command from the mid-layer + * + * Prepare a command for the scsi physical devices. This rountine prepares + * commands for devices which can take extended CDBs (>10 bytes). + */ +static void +megaraid_mbox_prepare_epthru(adapter_t *adapter, scb_t *scb, + struct scsi_cmnd *scp) +{ + mbox_ccb_t *ccb; + mraid_epassthru_t *epthru; + uint8_t channel; + uint8_t target; + + ccb = (mbox_ccb_t *)scb->ccb; + epthru = ccb->epthru; + channel = scb->dev_channel; + target = scb->dev_target; + + // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout + epthru->timeout = 4; + epthru->ars = 1; + epthru->islogical = 0; + epthru->channel = 0; + epthru->target = (channel << 4) | target; + epthru->logdrv = SCP2LUN(scp); + epthru->reqsenselen = 14; + epthru->cdblen = scp->cmd_len; + + memcpy(epthru->cdb, scp->cmnd, scp->cmd_len); + + if (scsi_bufflen(scp)) { + epthru->dataxferlen = scsi_bufflen(scp); + epthru->dataxferaddr = ccb->sgl_dma_h; + epthru->numsge = megaraid_mbox_mksgl(adapter, scb); + } + else { + epthru->dataxferaddr = 0; + epthru->dataxferlen = 0; + epthru->numsge = 0; + } + return; +} + + +/** + * megaraid_ack_sequence - interrupt ack sequence for memory mapped HBAs + * @adapter : controller's soft state + * + * Interrupt acknowledgement sequence for memory mapped HBAs. Find out the + * completed command and put them on the completed list for later processing. + * + * Returns: 1 if the interrupt is valid, 0 otherwise + */ +static int +megaraid_ack_sequence(adapter_t *adapter) +{ + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + mbox_t *mbox; + scb_t *scb; + uint8_t nstatus; + uint8_t completed[MBOX_MAX_FIRMWARE_STATUS]; + struct list_head clist; + int handled; + uint32_t dword; + unsigned long flags; + int i, j; + + + mbox = raid_dev->mbox; + + // move the SCBs from the firmware completed array to our local list + INIT_LIST_HEAD(&clist); + + // loop till F/W has more commands for us to complete + handled = 0; + spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); + do { + /* + * Check if a valid interrupt is pending. If found, force the + * interrupt line low. + */ + dword = RDOUTDOOR(raid_dev); + if (dword != 0x10001234) break; + + handled = 1; + + WROUTDOOR(raid_dev, 0x10001234); + + nstatus = 0; + // wait for valid numstatus to post + for (i = 0; i < 0xFFFFF; i++) { + if (mbox->numstatus != 0xFF) { + nstatus = mbox->numstatus; + break; + } + rmb(); + } + mbox->numstatus = 0xFF; + + adapter->outstanding_cmds -= nstatus; + + for (i = 0; i < nstatus; i++) { + + // wait for valid command index to post + for (j = 0; j < 0xFFFFF; j++) { + if (mbox->completed[i] != 0xFF) break; + rmb(); + } + completed[i] = mbox->completed[i]; + mbox->completed[i] = 0xFF; + + if (completed[i] == 0xFF) { + con_log(CL_ANN, (KERN_CRIT + "megaraid: command posting timed out\n")); + + BUG(); + continue; + } + + // Get SCB associated with this command id + if (completed[i] >= MBOX_MAX_SCSI_CMDS) { + // a cmm command + scb = adapter->uscb_list + (completed[i] - + MBOX_MAX_SCSI_CMDS); + } + else { + // an os command + scb = adapter->kscb_list + completed[i]; + } + + scb->status = mbox->status; + list_add_tail(&scb->list, &clist); + } + + // Acknowledge interrupt + WRINDOOR(raid_dev, 0x02); + + } while(1); + + spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); + + + // put the completed commands in the completed list. DPC would + // complete these commands later + spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); + + list_splice(&clist, &adapter->completed_list); + + spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); + + + // schedule the DPC if there is some work for it + if (handled) + tasklet_schedule(&adapter->dpc_h); + + return handled; +} + + +/** + * megaraid_isr - isr for memory based mailbox based controllers + * @irq : irq + * @devp : pointer to our soft state + * + * Interrupt service routine for memory-mapped mailbox controllers. + */ +static irqreturn_t +megaraid_isr(int irq, void *devp) +{ + adapter_t *adapter = devp; + int handled; + + handled = megaraid_ack_sequence(adapter); + + /* Loop through any pending requests */ + if (!adapter->quiescent) { + megaraid_mbox_runpendq(adapter, NULL); + } + + return IRQ_RETVAL(handled); +} + + +/** + * megaraid_mbox_sync_scb - sync kernel buffers + * @adapter : controller's soft state + * @scb : pointer to the resource packet + * + * DMA sync if required. + */ +static void +megaraid_mbox_sync_scb(adapter_t *adapter, scb_t *scb) +{ + mbox_ccb_t *ccb; + + ccb = (mbox_ccb_t *)scb->ccb; + + if (scb->dma_direction == PCI_DMA_FROMDEVICE) + pci_dma_sync_sg_for_cpu(adapter->pdev, + scsi_sglist(scb->scp), + scsi_sg_count(scb->scp), + PCI_DMA_FROMDEVICE); + + scsi_dma_unmap(scb->scp); + return; +} + + +/** + * megaraid_mbox_dpc - the tasklet to complete the commands from completed list + * @devp : pointer to HBA soft state + * + * Pick up the commands from the completed list and send back to the owners. + * This is a reentrant function and does not assume any locks are held while + * it is being called. + */ +static void +megaraid_mbox_dpc(unsigned long devp) +{ + adapter_t *adapter = (adapter_t *)devp; + mraid_device_t *raid_dev; + struct list_head clist; + struct scatterlist *sgl; + scb_t *scb; + scb_t *tmp; + struct scsi_cmnd *scp; + mraid_passthru_t *pthru; + mraid_epassthru_t *epthru; + mbox_ccb_t *ccb; + int islogical; + int pdev_index; + int pdev_state; + mbox_t *mbox; + unsigned long flags; + uint8_t c; + int status; + uioc_t *kioc; + + + if (!adapter) return; + + raid_dev = ADAP2RAIDDEV(adapter); + + // move the SCBs from the completed list to our local list + INIT_LIST_HEAD(&clist); + + spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); + + list_splice_init(&adapter->completed_list, &clist); + + spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); + + + list_for_each_entry_safe(scb, tmp, &clist, list) { + + status = scb->status; + scp = scb->scp; + ccb = (mbox_ccb_t *)scb->ccb; + pthru = ccb->pthru; + epthru = ccb->epthru; + mbox = ccb->mbox; + + // Make sure f/w has completed a valid command + if (scb->state != SCB_ISSUED) { + con_log(CL_ANN, (KERN_CRIT + "megaraid critical err: invalid command %d:%d:%p\n", + scb->sno, scb->state, scp)); + BUG(); + continue; // Must never happen! + } + + // check for the management command and complete it right away + if (scb->sno >= MBOX_MAX_SCSI_CMDS) { + scb->state = SCB_FREE; + scb->status = status; + + // remove from local clist + list_del_init(&scb->list); + + kioc = (uioc_t *)scb->gp; + kioc->status = 0; + + megaraid_mbox_mm_done(adapter, scb); + + continue; + } + + // Was an abort issued for this command earlier + if (scb->state & SCB_ABORT) { + con_log(CL_ANN, (KERN_NOTICE + "megaraid: aborted cmd [%x] completed\n", + scb->sno)); + } + + /* + * If the inquiry came of a disk drive which is not part of + * any RAID array, expose it to the kernel. For this to be + * enabled, user must set the "megaraid_expose_unconf_disks" + * flag to 1 by specifying it on module parameter list. + * This would enable data migration off drives from other + * configurations. + */ + islogical = MRAID_IS_LOGICAL(adapter, scp); + if (scp->cmnd[0] == INQUIRY && status == 0 && islogical == 0 + && IS_RAID_CH(raid_dev, scb->dev_channel)) { + + sgl = scsi_sglist(scp); + if (sg_page(sgl)) { + c = *(unsigned char *) sg_virt(&sgl[0]); + } else { + con_log(CL_ANN, (KERN_WARNING + "megaraid mailbox: invalid sg:%d\n", + __LINE__)); + c = 0; + } + + if ((c & 0x1F ) == TYPE_DISK) { + pdev_index = (scb->dev_channel * 16) + + scb->dev_target; + pdev_state = + raid_dev->pdrv_state[pdev_index] & 0x0F; + + if (pdev_state == PDRV_ONLINE || + pdev_state == PDRV_FAILED || + pdev_state == PDRV_RBLD || + pdev_state == PDRV_HOTSPARE || + megaraid_expose_unconf_disks == 0) { + + status = 0xF0; + } + } + } + + // Convert MegaRAID status to Linux error code + switch (status) { + + case 0x00: + + scp->result = (DID_OK << 16); + break; + + case 0x02: + + /* set sense_buffer and result fields */ + if (mbox->cmd == MBOXCMD_PASSTHRU || + mbox->cmd == MBOXCMD_PASSTHRU64) { + + memcpy(scp->sense_buffer, pthru->reqsensearea, + 14); + + scp->result = DRIVER_SENSE << 24 | + DID_OK << 16 | CHECK_CONDITION << 1; + } + else { + if (mbox->cmd == MBOXCMD_EXTPTHRU) { + + memcpy(scp->sense_buffer, + epthru->reqsensearea, 14); + + scp->result = DRIVER_SENSE << 24 | + DID_OK << 16 | + CHECK_CONDITION << 1; + } else { + scp->sense_buffer[0] = 0x70; + scp->sense_buffer[2] = ABORTED_COMMAND; + scp->result = CHECK_CONDITION << 1; + } + } + break; + + case 0x08: + + scp->result = DID_BUS_BUSY << 16 | status; + break; + + default: + + /* + * If TEST_UNIT_READY fails, we know RESERVATION_STATUS + * failed + */ + if (scp->cmnd[0] == TEST_UNIT_READY) { + scp->result = DID_ERROR << 16 | + RESERVATION_CONFLICT << 1; + } + else + /* + * Error code returned is 1 if Reserve or Release + * failed or the input parameter is invalid + */ + if (status == 1 && (scp->cmnd[0] == RESERVE || + scp->cmnd[0] == RELEASE)) { + + scp->result = DID_ERROR << 16 | + RESERVATION_CONFLICT << 1; + } + else { + scp->result = DID_BAD_TARGET << 16 | status; + } + } + + // print a debug message for all failed commands + if (status) { + megaraid_mbox_display_scb(adapter, scb); + } + + // Free our internal resources and call the mid-layer callback + // routine + megaraid_mbox_sync_scb(adapter, scb); + + // remove from local clist + list_del_init(&scb->list); + + // put back in free list + megaraid_dealloc_scb(adapter, scb); + + // send the scsi packet back to kernel + scp->scsi_done(scp); + } + + return; +} + + +/** + * megaraid_abort_handler - abort the scsi command + * @scp : command to be aborted + * + * Abort a previous SCSI request. Only commands on the pending list can be + * aborted. All the commands issued to the F/W must complete. + **/ +static int +megaraid_abort_handler(struct scsi_cmnd *scp) +{ + adapter_t *adapter; + mraid_device_t *raid_dev; + scb_t *scb; + scb_t *tmp; + int found; + unsigned long flags; + int i; + + + adapter = SCP2ADAPTER(scp); + raid_dev = ADAP2RAIDDEV(adapter); + + con_log(CL_ANN, (KERN_WARNING + "megaraid: aborting cmd=%x <c=%d t=%d l=%d>\n", + scp->cmnd[0], SCP2CHANNEL(scp), + SCP2TARGET(scp), SCP2LUN(scp))); + + // If FW has stopped responding, simply return failure + if (raid_dev->hw_error) { + con_log(CL_ANN, (KERN_NOTICE + "megaraid: hw error, not aborting\n")); + return FAILED; + } + + // There might a race here, where the command was completed by the + // firmware and now it is on the completed list. Before we could + // complete the command to the kernel in dpc, the abort came. + // Find out if this is the case to avoid the race. + scb = NULL; + spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); + list_for_each_entry_safe(scb, tmp, &adapter->completed_list, list) { + + if (scb->scp == scp) { // Found command + + list_del_init(&scb->list); // from completed list + + con_log(CL_ANN, (KERN_WARNING + "megaraid: %d[%d:%d], abort from completed list\n", + scb->sno, scb->dev_channel, scb->dev_target)); + + scp->result = (DID_ABORT << 16); + scp->scsi_done(scp); + + megaraid_dealloc_scb(adapter, scb); + + spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), + flags); + + return SUCCESS; + } + } + spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); + + + // Find out if this command is still on the pending list. If it is and + // was never issued, abort and return success. If the command is owned + // by the firmware, we must wait for it to complete by the FW. + spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); + list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { + + if (scb->scp == scp) { // Found command + + list_del_init(&scb->list); // from pending list + + ASSERT(!(scb->state & SCB_ISSUED)); + + con_log(CL_ANN, (KERN_WARNING + "megaraid abort: [%d:%d], driver owner\n", + scb->dev_channel, scb->dev_target)); + + scp->result = (DID_ABORT << 16); + scp->scsi_done(scp); + + megaraid_dealloc_scb(adapter, scb); + + spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), + flags); + + return SUCCESS; + } + } + spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); + + + // Check do we even own this command, in which case this would be + // owned by the firmware. The only way to locate the FW scb is to + // traverse through the list of all SCB, since driver does not + // maintain these SCBs on any list + found = 0; + spin_lock_irq(&adapter->lock); + for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { + scb = adapter->kscb_list + i; + + if (scb->scp == scp) { + + found = 1; + + if (!(scb->state & SCB_ISSUED)) { + con_log(CL_ANN, (KERN_WARNING + "megaraid abort: %d[%d:%d], invalid state\n", + scb->sno, scb->dev_channel, scb->dev_target)); + BUG(); + } + else { + con_log(CL_ANN, (KERN_WARNING + "megaraid abort: %d[%d:%d], fw owner\n", + scb->sno, scb->dev_channel, scb->dev_target)); + } + } + } + spin_unlock_irq(&adapter->lock); + + if (!found) { + con_log(CL_ANN, (KERN_WARNING "megaraid abort: do now own\n")); + + // FIXME: Should there be a callback for this command? + return SUCCESS; + } + + // We cannot actually abort a command owned by firmware, return + // failure and wait for reset. In host reset handler, we will find out + // if the HBA is still live + return FAILED; +} + +/** + * megaraid_reset_handler - device reset hadler for mailbox based driver + * @scp : reference command + * + * Reset handler for the mailbox based controller. First try to find out if + * the FW is still live, in which case the outstanding commands counter mut go + * down to 0. If that happens, also issue the reservation reset command to + * relinquish (possible) reservations on the logical drives connected to this + * host. + **/ +static int +megaraid_reset_handler(struct scsi_cmnd *scp) +{ + adapter_t *adapter; + scb_t *scb; + scb_t *tmp; + mraid_device_t *raid_dev; + unsigned long flags; + uint8_t raw_mbox[sizeof(mbox_t)]; + int rval; + int recovery_window; + int recovering; + int i; + uioc_t *kioc; + + adapter = SCP2ADAPTER(scp); + raid_dev = ADAP2RAIDDEV(adapter); + + // return failure if adapter is not responding + if (raid_dev->hw_error) { + con_log(CL_ANN, (KERN_NOTICE + "megaraid: hw error, cannot reset\n")); + return FAILED; + } + + + // Under exceptional conditions, FW can take up to 3 minutes to + // complete command processing. Wait for additional 2 minutes for the + // pending commands counter to go down to 0. If it doesn't, let the + // controller be marked offline + // Also, reset all the commands currently owned by the driver + spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); + list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { + list_del_init(&scb->list); // from pending list + + if (scb->sno >= MBOX_MAX_SCSI_CMDS) { + con_log(CL_ANN, (KERN_WARNING + "megaraid: IOCTL packet with %d[%d:%d] being reset\n", + scb->sno, scb->dev_channel, scb->dev_target)); + + scb->status = -1; + + kioc = (uioc_t *)scb->gp; + kioc->status = -EFAULT; + + megaraid_mbox_mm_done(adapter, scb); + } else { + if (scb->scp == scp) { // Found command + con_log(CL_ANN, (KERN_WARNING + "megaraid: %d[%d:%d], reset from pending list\n", + scb->sno, scb->dev_channel, scb->dev_target)); + } else { + con_log(CL_ANN, (KERN_WARNING + "megaraid: IO packet with %d[%d:%d] being reset\n", + scb->sno, scb->dev_channel, scb->dev_target)); + } + + scb->scp->result = (DID_RESET << 16); + scb->scp->scsi_done(scb->scp); + + megaraid_dealloc_scb(adapter, scb); + } + } + spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); + + if (adapter->outstanding_cmds) { + con_log(CL_ANN, (KERN_NOTICE + "megaraid: %d outstanding commands. Max wait %d sec\n", + adapter->outstanding_cmds, + (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT))); + } + + recovery_window = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; + + recovering = adapter->outstanding_cmds; + + for (i = 0; i < recovery_window; i++) { + + megaraid_ack_sequence(adapter); + + // print a message once every 5 seconds only + if (!(i % 5)) { + con_log(CL_ANN, ( + "megaraid mbox: Wait for %d commands to complete:%d\n", + adapter->outstanding_cmds, + (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT) - i)); + } + + // bailout if no recovery happened in reset time + if (adapter->outstanding_cmds == 0) { + break; + } + + msleep(1000); + } + + spin_lock(&adapter->lock); + + // If still outstanding commands, bail out + if (adapter->outstanding_cmds) { + con_log(CL_ANN, (KERN_WARNING + "megaraid mbox: critical hardware error!\n")); + + raid_dev->hw_error = 1; + + rval = FAILED; + goto out; + } + else { + con_log(CL_ANN, (KERN_NOTICE + "megaraid mbox: reset sequence completed successfully\n")); + } + + + // If the controller supports clustering, reset reservations + if (!adapter->ha) { + rval = SUCCESS; + goto out; + } + + // clear reservations if any + raw_mbox[0] = CLUSTER_CMD; + raw_mbox[2] = RESET_RESERVATIONS; + + rval = SUCCESS; + if (mbox_post_sync_cmd_fast(adapter, raw_mbox) == 0) { + con_log(CL_ANN, + (KERN_INFO "megaraid: reservation reset\n")); + } + else { + rval = FAILED; + con_log(CL_ANN, (KERN_WARNING + "megaraid: reservation reset failed\n")); + } + + out: + spin_unlock_irq(&adapter->lock); + return rval; +} + +/* + * START: internal commands library + * + * This section of the driver has the common routine used by the driver and + * also has all the FW routines + */ + +/** + * mbox_post_sync_cmd() - blocking command to the mailbox based controllers + * @adapter : controller's soft state + * @raw_mbox : the mailbox + * + * Issue a scb in synchronous and non-interrupt mode for mailbox based + * controllers. + */ +static int +mbox_post_sync_cmd(adapter_t *adapter, uint8_t raw_mbox[]) +{ + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + mbox64_t *mbox64; + mbox_t *mbox; + uint8_t status; + int i; + + + mbox64 = raid_dev->mbox64; + mbox = raid_dev->mbox; + + /* + * Wait until mailbox is free + */ + if (megaraid_busywait_mbox(raid_dev) != 0) + goto blocked_mailbox; + + /* + * Copy mailbox data into host structure + */ + memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16); + mbox->cmdid = 0xFE; + mbox->busy = 1; + mbox->poll = 0; + mbox->ack = 0; + mbox->numstatus = 0xFF; + mbox->status = 0xFF; + + wmb(); + WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); + + // wait for maximum 1 second for status to post. If the status is not + // available within 1 second, assume FW is initializing and wait + // for an extended amount of time + if (mbox->numstatus == 0xFF) { // status not yet available + udelay(25); + + for (i = 0; mbox->numstatus == 0xFF && i < 1000; i++) { + rmb(); + msleep(1); + } + + + if (i == 1000) { + con_log(CL_ANN, (KERN_NOTICE + "megaraid mailbox: wait for FW to boot ")); + + for (i = 0; (mbox->numstatus == 0xFF) && + (i < MBOX_RESET_WAIT); i++) { + rmb(); + con_log(CL_ANN, ("\b\b\b\b\b[%03d]", + MBOX_RESET_WAIT - i)); + msleep(1000); + } + + if (i == MBOX_RESET_WAIT) { + + con_log(CL_ANN, ( + "\nmegaraid mailbox: status not available\n")); + + return -1; + } + con_log(CL_ANN, ("\b\b\b\b\b[ok] \n")); + } + } + + // wait for maximum 1 second for poll semaphore + if (mbox->poll != 0x77) { + udelay(25); + + for (i = 0; (mbox->poll != 0x77) && (i < 1000); i++) { + rmb(); + msleep(1); + } + + if (i == 1000) { + con_log(CL_ANN, (KERN_WARNING + "megaraid mailbox: could not get poll semaphore\n")); + return -1; + } + } + + WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); + wmb(); + + // wait for maximum 1 second for acknowledgement + if (RDINDOOR(raid_dev) & 0x2) { + udelay(25); + + for (i = 0; (RDINDOOR(raid_dev) & 0x2) && (i < 1000); i++) { + rmb(); + msleep(1); + } + + if (i == 1000) { + con_log(CL_ANN, (KERN_WARNING + "megaraid mailbox: could not acknowledge\n")); + return -1; + } + } + mbox->poll = 0; + mbox->ack = 0x77; + + status = mbox->status; + + // invalidate the completed command id array. After command + // completion, firmware would write the valid id. + mbox->numstatus = 0xFF; + mbox->status = 0xFF; + for (i = 0; i < MBOX_MAX_FIRMWARE_STATUS; i++) { + mbox->completed[i] = 0xFF; + } + + return status; + +blocked_mailbox: + + con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n") ); + return -1; +} + + +/** + * mbox_post_sync_cmd_fast - blocking command to the mailbox based controllers + * @adapter : controller's soft state + * @raw_mbox : the mailbox + * + * Issue a scb in synchronous and non-interrupt mode for mailbox based + * controllers. This is a faster version of the synchronous command and + * therefore can be called in interrupt-context as well. + */ +static int +mbox_post_sync_cmd_fast(adapter_t *adapter, uint8_t raw_mbox[]) +{ + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + mbox_t *mbox; + long i; + + + mbox = raid_dev->mbox; + + // return immediately if the mailbox is busy + if (mbox->busy) return -1; + + // Copy mailbox data into host structure + memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 14); + mbox->cmdid = 0xFE; + mbox->busy = 1; + mbox->poll = 0; + mbox->ack = 0; + mbox->numstatus = 0xFF; + mbox->status = 0xFF; + + wmb(); + WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); + + for (i = 0; i < MBOX_SYNC_WAIT_CNT; i++) { + if (mbox->numstatus != 0xFF) break; + rmb(); + udelay(MBOX_SYNC_DELAY_200); + } + + if (i == MBOX_SYNC_WAIT_CNT) { + // We may need to re-calibrate the counter + con_log(CL_ANN, (KERN_CRIT + "megaraid: fast sync command timed out\n")); + } + + WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); + wmb(); + + return mbox->status; +} + + +/** + * megaraid_busywait_mbox() - Wait until the controller's mailbox is available + * @raid_dev : RAID device (HBA) soft state + * + * Wait until the controller's mailbox is available to accept more commands. + * Wait for at most 1 second. + */ +static int +megaraid_busywait_mbox(mraid_device_t *raid_dev) +{ + mbox_t *mbox = raid_dev->mbox; + int i = 0; + + if (mbox->busy) { + udelay(25); + for (i = 0; mbox->busy && i < 1000; i++) + msleep(1); + } + + if (i < 1000) return 0; + else return -1; +} + + +/** + * megaraid_mbox_product_info - some static information about the controller + * @adapter : our soft state + * + * Issue commands to the controller to grab some parameters required by our + * caller. + */ +static int +megaraid_mbox_product_info(adapter_t *adapter) +{ + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + mbox_t *mbox; + uint8_t raw_mbox[sizeof(mbox_t)]; + mraid_pinfo_t *pinfo; + dma_addr_t pinfo_dma_h; + mraid_inquiry3_t *mraid_inq3; + int i; + + + memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); + mbox = (mbox_t *)raw_mbox; + + /* + * Issue an ENQUIRY3 command to find out certain adapter parameters, + * e.g., max channels, max commands etc. + */ + pinfo = pci_alloc_consistent(adapter->pdev, sizeof(mraid_pinfo_t), + &pinfo_dma_h); + + if (pinfo == NULL) { + con_log(CL_ANN, (KERN_WARNING + "megaraid: out of memory, %s %d\n", __func__, + __LINE__)); + + return -1; + } + memset(pinfo, 0, sizeof(mraid_pinfo_t)); + + mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; + memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); + + raw_mbox[0] = FC_NEW_CONFIG; + raw_mbox[2] = NC_SUBOP_ENQUIRY3; + raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; + + // Issue the command + if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { + + con_log(CL_ANN, (KERN_WARNING "megaraid: Inquiry3 failed\n")); + + pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), + pinfo, pinfo_dma_h); + + return -1; + } + + /* + * Collect information about state of each physical drive + * attached to the controller. We will expose all the disks + * which are not part of RAID + */ + mraid_inq3 = (mraid_inquiry3_t *)adapter->ibuf; + for (i = 0; i < MBOX_MAX_PHYSICAL_DRIVES; i++) { + raid_dev->pdrv_state[i] = mraid_inq3->pdrv_state[i]; + } + + /* + * Get product info for information like number of channels, + * maximum commands supported. + */ + memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); + mbox->xferaddr = (uint32_t)pinfo_dma_h; + + raw_mbox[0] = FC_NEW_CONFIG; + raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; + + if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { + + con_log(CL_ANN, (KERN_WARNING + "megaraid: product info failed\n")); + + pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), + pinfo, pinfo_dma_h); + + return -1; + } + + /* + * Setup some parameters for host, as required by our caller + */ + adapter->max_channel = pinfo->nchannels; + + /* + * we will export all the logical drives on a single channel. + * Add 1 since inquires do not come for inititor ID + */ + adapter->max_target = MAX_LOGICAL_DRIVES_40LD + 1; + adapter->max_lun = 8; // up to 8 LUNs for non-disk devices + + /* + * These are the maximum outstanding commands for the scsi-layer + */ + adapter->max_cmds = MBOX_MAX_SCSI_CMDS; + + memset(adapter->fw_version, 0, VERSION_SIZE); + memset(adapter->bios_version, 0, VERSION_SIZE); + + memcpy(adapter->fw_version, pinfo->fw_version, 4); + adapter->fw_version[4] = 0; + + memcpy(adapter->bios_version, pinfo->bios_version, 4); + adapter->bios_version[4] = 0; + + con_log(CL_ANN, (KERN_NOTICE + "megaraid: fw version:[%s] bios version:[%s]\n", + adapter->fw_version, adapter->bios_version)); + + pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), pinfo, + pinfo_dma_h); + + return 0; +} + + + +/** + * megaraid_mbox_extended_cdb - check for support for extended CDBs + * @adapter : soft state for the controller + * + * This routine check whether the controller in question supports extended + * ( > 10 bytes ) CDBs. + */ +static int +megaraid_mbox_extended_cdb(adapter_t *adapter) +{ + mbox_t *mbox; + uint8_t raw_mbox[sizeof(mbox_t)]; + int rval; + + mbox = (mbox_t *)raw_mbox; + + memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); + mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; + + memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); + + raw_mbox[0] = MAIN_MISC_OPCODE; + raw_mbox[2] = SUPPORT_EXT_CDB; + + /* + * Issue the command + */ + rval = 0; + if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { + rval = -1; + } + + return rval; +} + + +/** + * megaraid_mbox_support_ha - Do we support clustering + * @adapter : soft state for the controller + * @init_id : ID of the initiator + * + * Determine if the firmware supports clustering and the ID of the initiator. + */ +static int +megaraid_mbox_support_ha(adapter_t *adapter, uint16_t *init_id) +{ + mbox_t *mbox; + uint8_t raw_mbox[sizeof(mbox_t)]; + int rval; + + + mbox = (mbox_t *)raw_mbox; + + memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); + + mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; + + memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); + + raw_mbox[0] = GET_TARGET_ID; + + // Issue the command + *init_id = 7; + rval = -1; + if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { + + *init_id = *(uint8_t *)adapter->ibuf; + + con_log(CL_ANN, (KERN_INFO + "megaraid: cluster firmware, initiator ID: %d\n", + *init_id)); + + rval = 0; + } + + return rval; +} + + +/** + * megaraid_mbox_support_random_del - Do we support random deletion + * @adapter : soft state for the controller + * + * Determine if the firmware supports random deletion. + * Return: 1 is operation supported, 0 otherwise + */ +static int +megaraid_mbox_support_random_del(adapter_t *adapter) +{ + mbox_t *mbox; + uint8_t raw_mbox[sizeof(mbox_t)]; + int rval; + + /* + * Newer firmware on Dell CERC expect a different + * random deletion handling, so disable it. + */ + if (adapter->pdev->vendor == PCI_VENDOR_ID_AMI && + adapter->pdev->device == PCI_DEVICE_ID_AMI_MEGARAID3 && + adapter->pdev->subsystem_vendor == PCI_VENDOR_ID_DELL && + adapter->pdev->subsystem_device == PCI_SUBSYS_ID_CERC_ATA100_4CH && + (adapter->fw_version[0] > '6' || + (adapter->fw_version[0] == '6' && + adapter->fw_version[2] > '6') || + (adapter->fw_version[0] == '6' + && adapter->fw_version[2] == '6' + && adapter->fw_version[3] > '1'))) { + con_log(CL_DLEVEL1, ("megaraid: disable random deletion\n")); + return 0; + } + + mbox = (mbox_t *)raw_mbox; + + memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); + + raw_mbox[0] = FC_DEL_LOGDRV; + raw_mbox[2] = OP_SUP_DEL_LOGDRV; + + // Issue the command + rval = 0; + if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { + + con_log(CL_DLEVEL1, ("megaraid: supports random deletion\n")); + + rval = 1; + } + + return rval; +} + + +/** + * megaraid_mbox_get_max_sg - maximum sg elements supported by the firmware + * @adapter : soft state for the controller + * + * Find out the maximum number of scatter-gather elements supported by the + * firmware. + */ +static int +megaraid_mbox_get_max_sg(adapter_t *adapter) +{ + mbox_t *mbox; + uint8_t raw_mbox[sizeof(mbox_t)]; + int nsg; + + + mbox = (mbox_t *)raw_mbox; + + memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); + + mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; + + memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); + + raw_mbox[0] = MAIN_MISC_OPCODE; + raw_mbox[2] = GET_MAX_SG_SUPPORT; + + // Issue the command + if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { + nsg = *(uint8_t *)adapter->ibuf; + } + else { + nsg = MBOX_DEFAULT_SG_SIZE; + } + + if (nsg > MBOX_MAX_SG_SIZE) nsg = MBOX_MAX_SG_SIZE; + + return nsg; +} + + +/** + * megaraid_mbox_enum_raid_scsi - enumerate the RAID and SCSI channels + * @adapter : soft state for the controller + * + * Enumerate the RAID and SCSI channels for ROMB platforms so that channels + * can be exported as regular SCSI channels. + */ +static void +megaraid_mbox_enum_raid_scsi(adapter_t *adapter) +{ + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + mbox_t *mbox; + uint8_t raw_mbox[sizeof(mbox_t)]; + + + mbox = (mbox_t *)raw_mbox; + + memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); + + mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; + + memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); + + raw_mbox[0] = CHNL_CLASS; + raw_mbox[2] = GET_CHNL_CLASS; + + // Issue the command. If the command fails, all channels are RAID + // channels + raid_dev->channel_class = 0xFF; + if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { + raid_dev->channel_class = *(uint8_t *)adapter->ibuf; + } + + return; +} + + +/** + * megaraid_mbox_flush_cache - flush adapter and disks cache + * @adapter : soft state for the controller + * + * Flush adapter cache followed by disks cache. + */ +static void +megaraid_mbox_flush_cache(adapter_t *adapter) +{ + mbox_t *mbox; + uint8_t raw_mbox[sizeof(mbox_t)]; + + + mbox = (mbox_t *)raw_mbox; + + memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); + + raw_mbox[0] = FLUSH_ADAPTER; + + if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { + con_log(CL_ANN, ("megaraid: flush adapter failed\n")); + } + + raw_mbox[0] = FLUSH_SYSTEM; + + if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { + con_log(CL_ANN, ("megaraid: flush disks cache failed\n")); + } + + return; +} + + +/** + * megaraid_mbox_fire_sync_cmd - fire the sync cmd + * @adapter : soft state for the controller + * + * Clears the pending cmds in FW and reinits its RAID structs. + */ +static int +megaraid_mbox_fire_sync_cmd(adapter_t *adapter) +{ + mbox_t *mbox; + uint8_t raw_mbox[sizeof(mbox_t)]; + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + mbox64_t *mbox64; + int status = 0; + int i; + uint32_t dword; + + mbox = (mbox_t *)raw_mbox; + + memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); + + raw_mbox[0] = 0xFF; + + mbox64 = raid_dev->mbox64; + mbox = raid_dev->mbox; + + /* Wait until mailbox is free */ + if (megaraid_busywait_mbox(raid_dev) != 0) { + status = 1; + goto blocked_mailbox; + } + + /* Copy mailbox data into host structure */ + memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16); + mbox->cmdid = 0xFE; + mbox->busy = 1; + mbox->poll = 0; + mbox->ack = 0; + mbox->numstatus = 0; + mbox->status = 0; + + wmb(); + WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); + + /* Wait for maximum 1 min for status to post. + * If the Firmware SUPPORTS the ABOVE COMMAND, + * mbox->cmd will be set to 0 + * else + * the firmware will reject the command with + * mbox->numstatus set to 1 + */ + + i = 0; + status = 0; + while (!mbox->numstatus && mbox->cmd == 0xFF) { + rmb(); + msleep(1); + i++; + if (i > 1000 * 60) { + status = 1; + break; + } + } + if (mbox->numstatus == 1) + status = 1; /*cmd not supported*/ + + /* Check for interrupt line */ + dword = RDOUTDOOR(raid_dev); + WROUTDOOR(raid_dev, dword); + WRINDOOR(raid_dev,2); + + return status; + +blocked_mailbox: + con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n")); + return status; +} + +/** + * megaraid_mbox_display_scb - display SCB information, mostly debug purposes + * @adapter : controller's soft state + * @scb : SCB to be displayed + * @level : debug level for console print + * + * Diplay information about the given SCB iff the current debug level is + * verbose. + */ +static void +megaraid_mbox_display_scb(adapter_t *adapter, scb_t *scb) +{ + mbox_ccb_t *ccb; + struct scsi_cmnd *scp; + mbox_t *mbox; + int level; + int i; + + + ccb = (mbox_ccb_t *)scb->ccb; + scp = scb->scp; + mbox = ccb->mbox; + + level = CL_DLEVEL3; + + con_log(level, (KERN_NOTICE + "megaraid mailbox: status:%#x cmd:%#x id:%#x ", scb->status, + mbox->cmd, scb->sno)); + + con_log(level, ("sec:%#x lba:%#x addr:%#x ld:%d sg:%d\n", + mbox->numsectors, mbox->lba, mbox->xferaddr, mbox->logdrv, + mbox->numsge)); + + if (!scp) return; + + con_log(level, (KERN_NOTICE "scsi cmnd: ")); + + for (i = 0; i < scp->cmd_len; i++) { + con_log(level, ("%#2.02x ", scp->cmnd[i])); + } + + con_log(level, ("\n")); + + return; +} + + +/** + * megaraid_mbox_setup_device_map - manage device ids + * @adapter : Driver's soft state + * + * Manange the device ids to have an appropriate mapping between the kernel + * scsi addresses and megaraid scsi and logical drive addresses. We export + * scsi devices on their actual addresses, whereas the logical drives are + * exported on a virtual scsi channel. + */ +static void +megaraid_mbox_setup_device_map(adapter_t *adapter) +{ + uint8_t c; + uint8_t t; + + /* + * First fill the values on the logical drive channel + */ + for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) + adapter->device_ids[adapter->max_channel][t] = + (t < adapter->init_id) ? t : t - 1; + + adapter->device_ids[adapter->max_channel][adapter->init_id] = 0xFF; + + /* + * Fill the values on the physical devices channels + */ + for (c = 0; c < adapter->max_channel; c++) + for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) + adapter->device_ids[c][t] = (c << 8) | t; +} + + +/* + * END: internal commands library + */ + +/* + * START: Interface for the common management module + * + * This is the module, which interfaces with the common management module to + * provide support for ioctl and sysfs + */ + +/** + * megaraid_cmm_register - register with the management module + * @adapter : HBA soft state + * + * Register with the management module, which allows applications to issue + * ioctl calls to the drivers. This interface is used by the management module + * to setup sysfs support as well. + */ +static int +megaraid_cmm_register(adapter_t *adapter) +{ + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + mraid_mmadp_t adp; + scb_t *scb; + mbox_ccb_t *ccb; + int rval; + int i; + + // Allocate memory for the base list of scb for management module. + adapter->uscb_list = kcalloc(MBOX_MAX_USER_CMDS, sizeof(scb_t), GFP_KERNEL); + + if (adapter->uscb_list == NULL) { + con_log(CL_ANN, (KERN_WARNING + "megaraid: out of memory, %s %d\n", __func__, + __LINE__)); + return -1; + } + + + // Initialize the synchronization parameters for resources for + // commands for management module + INIT_LIST_HEAD(&adapter->uscb_pool); + + spin_lock_init(USER_FREE_LIST_LOCK(adapter)); + + + + // link all the packets. Note, CCB for commands, coming from the + // commom management module, mailbox physical address are already + // setup by it. We just need placeholder for that in our local command + // control blocks + for (i = 0; i < MBOX_MAX_USER_CMDS; i++) { + + scb = adapter->uscb_list + i; + ccb = raid_dev->uccb_list + i; + + scb->ccb = (caddr_t)ccb; + ccb->mbox64 = raid_dev->umbox64 + i; + ccb->mbox = &ccb->mbox64->mbox32; + ccb->raw_mbox = (uint8_t *)ccb->mbox; + + scb->gp = 0; + + // COMMAND ID 0 - (MBOX_MAX_SCSI_CMDS-1) ARE RESERVED FOR + // COMMANDS COMING FROM IO SUBSYSTEM (MID-LAYER) + scb->sno = i + MBOX_MAX_SCSI_CMDS; + + scb->scp = NULL; + scb->state = SCB_FREE; + scb->dma_direction = PCI_DMA_NONE; + scb->dma_type = MRAID_DMA_NONE; + scb->dev_channel = -1; + scb->dev_target = -1; + + // put scb in the free pool + list_add_tail(&scb->list, &adapter->uscb_pool); + } + + adp.unique_id = adapter->unique_id; + adp.drvr_type = DRVRTYPE_MBOX; + adp.drvr_data = (unsigned long)adapter; + adp.pdev = adapter->pdev; + adp.issue_uioc = megaraid_mbox_mm_handler; + adp.timeout = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; + adp.max_kioc = MBOX_MAX_USER_CMDS; + + if ((rval = mraid_mm_register_adp(&adp)) != 0) { + + con_log(CL_ANN, (KERN_WARNING + "megaraid mbox: did not register with CMM\n")); + + kfree(adapter->uscb_list); + } + + return rval; +} + + +/** + * megaraid_cmm_unregister - un-register with the management module + * @adapter : HBA soft state + * + * Un-register with the management module. + * FIXME: mgmt module must return failure for unregister if it has pending + * commands in LLD. + */ +static int +megaraid_cmm_unregister(adapter_t *adapter) +{ + kfree(adapter->uscb_list); + mraid_mm_unregister_adp(adapter->unique_id); + return 0; +} + + +/** + * megaraid_mbox_mm_handler - interface for CMM to issue commands to LLD + * @drvr_data : LLD specific data + * @kioc : CMM interface packet + * @action : command action + * + * This routine is invoked whenever the Common Management Module (CMM) has a + * command for us. The 'action' parameter specifies if this is a new command + * or otherwise. + */ +static int +megaraid_mbox_mm_handler(unsigned long drvr_data, uioc_t *kioc, uint32_t action) +{ + adapter_t *adapter; + + if (action != IOCTL_ISSUE) { + con_log(CL_ANN, (KERN_WARNING + "megaraid: unsupported management action:%#2x\n", + action)); + return (-ENOTSUPP); + } + + adapter = (adapter_t *)drvr_data; + + // make sure this adapter is not being detached right now. + if (atomic_read(&adapter->being_detached)) { + con_log(CL_ANN, (KERN_WARNING + "megaraid: reject management request, detaching\n")); + return (-ENODEV); + } + + switch (kioc->opcode) { + + case GET_ADAP_INFO: + + kioc->status = gather_hbainfo(adapter, (mraid_hba_info_t *) + (unsigned long)kioc->buf_vaddr); + + kioc->done(kioc); + + return kioc->status; + + case MBOX_CMD: + + return megaraid_mbox_mm_command(adapter, kioc); + + default: + kioc->status = (-EINVAL); + kioc->done(kioc); + return (-EINVAL); + } + + return 0; // not reached +} + +/** + * megaraid_mbox_mm_command - issues commands routed through CMM + * @adapter : HBA soft state + * @kioc : management command packet + * + * Issues commands, which are routed through the management module. + */ +static int +megaraid_mbox_mm_command(adapter_t *adapter, uioc_t *kioc) +{ + struct list_head *head = &adapter->uscb_pool; + mbox64_t *mbox64; + uint8_t *raw_mbox; + scb_t *scb; + mbox_ccb_t *ccb; + unsigned long flags; + + // detach one scb from free pool + spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); + + if (list_empty(head)) { // should never happen because of CMM + + con_log(CL_ANN, (KERN_WARNING + "megaraid mbox: bug in cmm handler, lost resources\n")); + + spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); + + return (-EINVAL); + } + + scb = list_entry(head->next, scb_t, list); + list_del_init(&scb->list); + + spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); + + scb->state = SCB_ACTIVE; + scb->dma_type = MRAID_DMA_NONE; + scb->dma_direction = PCI_DMA_NONE; + + ccb = (mbox_ccb_t *)scb->ccb; + mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; + raw_mbox = (uint8_t *)&mbox64->mbox32; + + memcpy(ccb->mbox64, mbox64, sizeof(mbox64_t)); + + scb->gp = (unsigned long)kioc; + + /* + * If it is a logdrv random delete operation, we have to wait till + * there are no outstanding cmds at the fw and then issue it directly + */ + if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { + + if (wait_till_fw_empty(adapter)) { + con_log(CL_ANN, (KERN_NOTICE + "megaraid mbox: LD delete, timed out\n")); + + kioc->status = -ETIME; + + scb->status = -1; + + megaraid_mbox_mm_done(adapter, scb); + + return (-ETIME); + } + + INIT_LIST_HEAD(&scb->list); + + scb->state = SCB_ISSUED; + if (mbox_post_cmd(adapter, scb) != 0) { + + con_log(CL_ANN, (KERN_NOTICE + "megaraid mbox: LD delete, mailbox busy\n")); + + kioc->status = -EBUSY; + + scb->status = -1; + + megaraid_mbox_mm_done(adapter, scb); + + return (-EBUSY); + } + + return 0; + } + + // put the command on the pending list and execute + megaraid_mbox_runpendq(adapter, scb); + + return 0; +} + + +static int +wait_till_fw_empty(adapter_t *adapter) +{ + unsigned long flags = 0; + int i; + + + /* + * Set the quiescent flag to stop issuing cmds to FW. + */ + spin_lock_irqsave(&adapter->lock, flags); + adapter->quiescent++; + spin_unlock_irqrestore(&adapter->lock, flags); + + /* + * Wait till there are no more cmds outstanding at FW. Try for at most + * 60 seconds + */ + for (i = 0; i < 60 && adapter->outstanding_cmds; i++) { + con_log(CL_DLEVEL1, (KERN_INFO + "megaraid: FW has %d pending commands\n", + adapter->outstanding_cmds)); + + msleep(1000); + } + + return adapter->outstanding_cmds; +} + + +/** + * megaraid_mbox_mm_done - callback for CMM commands + * @adapter : HBA soft state + * @scb : completed command + * + * Callback routine for internal commands originated from the management + * module. + */ +static void +megaraid_mbox_mm_done(adapter_t *adapter, scb_t *scb) +{ + uioc_t *kioc; + mbox64_t *mbox64; + uint8_t *raw_mbox; + unsigned long flags; + + kioc = (uioc_t *)scb->gp; + mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; + mbox64->mbox32.status = scb->status; + raw_mbox = (uint8_t *)&mbox64->mbox32; + + + // put scb in the free pool + scb->state = SCB_FREE; + scb->scp = NULL; + + spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); + + list_add(&scb->list, &adapter->uscb_pool); + + spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); + + // if a delete logical drive operation succeeded, restart the + // controller + if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { + + adapter->quiescent--; + + megaraid_mbox_runpendq(adapter, NULL); + } + + kioc->done(kioc); + + return; +} + + +/** + * gather_hbainfo - HBA characteristics for the applications + * @adapter : HBA soft state + * @hinfo : pointer to the caller's host info strucuture + */ +static int +gather_hbainfo(adapter_t *adapter, mraid_hba_info_t *hinfo) +{ + uint8_t dmajor; + + dmajor = megaraid_mbox_version[0]; + + hinfo->pci_vendor_id = adapter->pdev->vendor; + hinfo->pci_device_id = adapter->pdev->device; + hinfo->subsys_vendor_id = adapter->pdev->subsystem_vendor; + hinfo->subsys_device_id = adapter->pdev->subsystem_device; + + hinfo->pci_bus = adapter->pdev->bus->number; + hinfo->pci_dev_fn = adapter->pdev->devfn; + hinfo->pci_slot = PCI_SLOT(adapter->pdev->devfn); + hinfo->irq = adapter->host->irq; + hinfo->baseport = ADAP2RAIDDEV(adapter)->baseport; + + hinfo->unique_id = (hinfo->pci_bus << 8) | adapter->pdev->devfn; + hinfo->host_no = adapter->host->host_no; + + return 0; +} + +/* + * END: Interface for the common management module + */ + + + +/** + * megaraid_sysfs_alloc_resources - allocate sysfs related resources + * @adapter : controller's soft state + * + * Allocate packets required to issue FW calls whenever the sysfs attributes + * are read. These attributes would require up-to-date information from the + * FW. Also set up resources for mutual exclusion to share these resources and + * the wait queue. + * + * Return 0 on success. + * Return -ERROR_CODE on failure. + */ +static int +megaraid_sysfs_alloc_resources(adapter_t *adapter) +{ + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + int rval = 0; + + raid_dev->sysfs_uioc = kmalloc(sizeof(uioc_t), GFP_KERNEL); + + raid_dev->sysfs_mbox64 = kmalloc(sizeof(mbox64_t), GFP_KERNEL); + + raid_dev->sysfs_buffer = pci_alloc_consistent(adapter->pdev, + PAGE_SIZE, &raid_dev->sysfs_buffer_dma); + + if (!raid_dev->sysfs_uioc || !raid_dev->sysfs_mbox64 || + !raid_dev->sysfs_buffer) { + + con_log(CL_ANN, (KERN_WARNING + "megaraid: out of memory, %s %d\n", __func__, + __LINE__)); + + rval = -ENOMEM; + + megaraid_sysfs_free_resources(adapter); + } + + mutex_init(&raid_dev->sysfs_mtx); + + init_waitqueue_head(&raid_dev->sysfs_wait_q); + + return rval; +} + + +/** + * megaraid_sysfs_free_resources - free sysfs related resources + * @adapter : controller's soft state + * + * Free packets allocated for sysfs FW commands + */ +static void +megaraid_sysfs_free_resources(adapter_t *adapter) +{ + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + + kfree(raid_dev->sysfs_uioc); + kfree(raid_dev->sysfs_mbox64); + + if (raid_dev->sysfs_buffer) { + pci_free_consistent(adapter->pdev, PAGE_SIZE, + raid_dev->sysfs_buffer, raid_dev->sysfs_buffer_dma); + } +} + + +/** + * megaraid_sysfs_get_ldmap_done - callback for get ldmap + * @uioc : completed packet + * + * Callback routine called in the ISR/tasklet context for get ldmap call + */ +static void +megaraid_sysfs_get_ldmap_done(uioc_t *uioc) +{ + adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + + uioc->status = 0; + + wake_up(&raid_dev->sysfs_wait_q); +} + + +/** + * megaraid_sysfs_get_ldmap_timeout - timeout handling for get ldmap + * @data : timed out packet + * + * Timeout routine to recover and return to application, in case the adapter + * has stopped responding. A timeout of 60 seconds for this command seems like + * a good value. + */ +static void +megaraid_sysfs_get_ldmap_timeout(unsigned long data) +{ + uioc_t *uioc = (uioc_t *)data; + adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + + uioc->status = -ETIME; + + wake_up(&raid_dev->sysfs_wait_q); +} + + +/** + * megaraid_sysfs_get_ldmap - get update logical drive map + * @adapter : controller's soft state + * + * This routine will be called whenever user reads the logical drive + * attributes, go get the current logical drive mapping table from the + * firmware. We use the management API's to issue commands to the controller. + * + * NOTE: The commands issuance functionality is not generalized and + * implemented in context of "get ld map" command only. If required, the + * command issuance logical can be trivially pulled out and implemented as a + * standalone library. For now, this should suffice since there is no other + * user of this interface. + * + * Return 0 on success. + * Return -1 on failure. + */ +static int +megaraid_sysfs_get_ldmap(adapter_t *adapter) +{ + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + uioc_t *uioc; + mbox64_t *mbox64; + mbox_t *mbox; + char *raw_mbox; + struct timer_list sysfs_timer; + struct timer_list *timerp; + caddr_t ldmap; + int rval = 0; + + /* + * Allow only one read at a time to go through the sysfs attributes + */ + mutex_lock(&raid_dev->sysfs_mtx); + + uioc = raid_dev->sysfs_uioc; + mbox64 = raid_dev->sysfs_mbox64; + ldmap = raid_dev->sysfs_buffer; + + memset(uioc, 0, sizeof(uioc_t)); + memset(mbox64, 0, sizeof(mbox64_t)); + memset(ldmap, 0, sizeof(raid_dev->curr_ldmap)); + + mbox = &mbox64->mbox32; + raw_mbox = (char *)mbox; + uioc->cmdbuf = (uint64_t)(unsigned long)mbox64; + uioc->buf_vaddr = (caddr_t)adapter; + uioc->status = -ENODATA; + uioc->done = megaraid_sysfs_get_ldmap_done; + + /* + * Prepare the mailbox packet to get the current logical drive mapping + * table + */ + mbox->xferaddr = (uint32_t)raid_dev->sysfs_buffer_dma; + + raw_mbox[0] = FC_DEL_LOGDRV; + raw_mbox[2] = OP_GET_LDID_MAP; + + /* + * Setup a timer to recover from a non-responding controller + */ + timerp = &sysfs_timer; + init_timer(timerp); + + timerp->function = megaraid_sysfs_get_ldmap_timeout; + timerp->data = (unsigned long)uioc; + timerp->expires = jiffies + 60 * HZ; + + add_timer(timerp); + + /* + * Send the command to the firmware + */ + rval = megaraid_mbox_mm_command(adapter, uioc); + + if (rval == 0) { // command successfully issued + wait_event(raid_dev->sysfs_wait_q, (uioc->status != -ENODATA)); + + /* + * Check if the command timed out + */ + if (uioc->status == -ETIME) { + con_log(CL_ANN, (KERN_NOTICE + "megaraid: sysfs get ld map timed out\n")); + + rval = -ETIME; + } + else { + rval = mbox->status; + } + + if (rval == 0) { + memcpy(raid_dev->curr_ldmap, ldmap, + sizeof(raid_dev->curr_ldmap)); + } + else { + con_log(CL_ANN, (KERN_NOTICE + "megaraid: get ld map failed with %x\n", rval)); + } + } + else { + con_log(CL_ANN, (KERN_NOTICE + "megaraid: could not issue ldmap command:%x\n", rval)); + } + + + del_timer_sync(timerp); + + mutex_unlock(&raid_dev->sysfs_mtx); + + return rval; +} + + +/** + * megaraid_sysfs_show_app_hndl - display application handle for this adapter + * @cdev : class device object representation for the host + * @buf : buffer to send data to + * + * Display the handle used by the applications while executing management + * tasks on the adapter. We invoke a management module API to get the adapter + * handle, since we do not interface with applications directly. + */ +static ssize_t +megaraid_sysfs_show_app_hndl(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(shost); + uint32_t app_hndl; + + app_hndl = mraid_mm_adapter_app_handle(adapter->unique_id); + + return snprintf(buf, 8, "%u\n", app_hndl); +} + + +/** + * megaraid_sysfs_show_ldnum - display the logical drive number for this device + * @dev : device object representation for the scsi device + * @attr : device attribute to show + * @buf : buffer to send data to + * + * Display the logical drive number for the device in question, if it a valid + * logical drive. For physical devices, "-1" is returned. + * + * The logical drive number is displayed in following format: + * + * <SCSI ID> <LD NUM> <LD STICKY ID> <APP ADAPTER HANDLE> + * + * <int> <int> <int> <int> + */ +static ssize_t +megaraid_sysfs_show_ldnum(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct scsi_device *sdev = to_scsi_device(dev); + adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(sdev->host); + mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); + int scsi_id = -1; + int logical_drv = -1; + int ldid_map = -1; + uint32_t app_hndl = 0; + int mapped_sdev_id; + int rval; + int i; + + if (raid_dev->random_del_supported && + MRAID_IS_LOGICAL_SDEV(adapter, sdev)) { + + rval = megaraid_sysfs_get_ldmap(adapter); + if (rval == 0) { + + for (i = 0; i < MAX_LOGICAL_DRIVES_40LD; i++) { + + mapped_sdev_id = sdev->id; + + if (sdev->id > adapter->init_id) { + mapped_sdev_id -= 1; + } + + if (raid_dev->curr_ldmap[i] == mapped_sdev_id) { + + scsi_id = sdev->id; + + logical_drv = i; + + ldid_map = raid_dev->curr_ldmap[i]; + + app_hndl = mraid_mm_adapter_app_handle( + adapter->unique_id); + + break; + } + } + } + else { + con_log(CL_ANN, (KERN_NOTICE + "megaraid: sysfs get ld map failed: %x\n", + rval)); + } + } + + return snprintf(buf, 36, "%d %d %d %d\n", scsi_id, logical_drv, + ldid_map, app_hndl); +} + + +/* + * END: Mailbox Low Level Driver + */ +module_init(megaraid_init); +module_exit(megaraid_exit); + +/* vim: set ts=8 sw=8 tw=78 ai si: */ diff --git a/drivers/scsi/megaraid/megaraid_mbox.h b/drivers/scsi/megaraid/megaraid_mbox.h new file mode 100644 index 00000000..c1d86d96 --- /dev/null +++ b/drivers/scsi/megaraid/megaraid_mbox.h @@ -0,0 +1,238 @@ +/* + * + * Linux MegaRAID device driver + * + * Copyright (c) 2003-2004 LSI Logic Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * FILE : megaraid_mbox.h + */ + +#ifndef _MEGARAID_H_ +#define _MEGARAID_H_ + + +#include "mega_common.h" +#include "mbox_defs.h" +#include "megaraid_ioctl.h" + + +#define MEGARAID_VERSION "2.20.5.1" +#define MEGARAID_EXT_VERSION "(Release Date: Thu Nov 16 15:32:35 EST 2006)" + + +/* + * Define some PCI values here until they are put in the kernel + */ +#define PCI_DEVICE_ID_PERC4_DI_DISCOVERY 0x000E +#define PCI_SUBSYS_ID_PERC4_DI_DISCOVERY 0x0123 + +#define PCI_DEVICE_ID_PERC4_SC 0x1960 +#define PCI_SUBSYS_ID_PERC4_SC 0x0520 + +#define PCI_DEVICE_ID_PERC4_DC 0x1960 +#define PCI_SUBSYS_ID_PERC4_DC 0x0518 + +#define PCI_DEVICE_ID_VERDE 0x0407 + +#define PCI_DEVICE_ID_PERC4_DI_EVERGLADES 0x000F +#define PCI_SUBSYS_ID_PERC4_DI_EVERGLADES 0x014A + +#define PCI_DEVICE_ID_PERC4E_SI_BIGBEND 0x0013 +#define PCI_SUBSYS_ID_PERC4E_SI_BIGBEND 0x016c + +#define PCI_DEVICE_ID_PERC4E_DI_KOBUK 0x0013 +#define PCI_SUBSYS_ID_PERC4E_DI_KOBUK 0x016d + +#define PCI_DEVICE_ID_PERC4E_DI_CORVETTE 0x0013 +#define PCI_SUBSYS_ID_PERC4E_DI_CORVETTE 0x016e + +#define PCI_DEVICE_ID_PERC4E_DI_EXPEDITION 0x0013 +#define PCI_SUBSYS_ID_PERC4E_DI_EXPEDITION 0x016f + +#define PCI_DEVICE_ID_PERC4E_DI_GUADALUPE 0x0013 +#define PCI_SUBSYS_ID_PERC4E_DI_GUADALUPE 0x0170 + +#define PCI_DEVICE_ID_DOBSON 0x0408 + +#define PCI_DEVICE_ID_MEGARAID_SCSI_320_0 0x1960 +#define PCI_SUBSYS_ID_MEGARAID_SCSI_320_0 0xA520 + +#define PCI_DEVICE_ID_MEGARAID_SCSI_320_1 0x1960 +#define PCI_SUBSYS_ID_MEGARAID_SCSI_320_1 0x0520 + +#define PCI_DEVICE_ID_MEGARAID_SCSI_320_2 0x1960 +#define PCI_SUBSYS_ID_MEGARAID_SCSI_320_2 0x0518 + +#define PCI_DEVICE_ID_MEGARAID_I4_133_RAID 0x1960 +#define PCI_SUBSYS_ID_MEGARAID_I4_133_RAID 0x0522 + +#define PCI_DEVICE_ID_MEGARAID_SATA_150_4 0x1960 +#define PCI_SUBSYS_ID_MEGARAID_SATA_150_4 0x4523 + +#define PCI_DEVICE_ID_MEGARAID_SATA_150_6 0x1960 +#define PCI_SUBSYS_ID_MEGARAID_SATA_150_6 0x0523 + +#define PCI_DEVICE_ID_LINDSAY 0x0409 + +#define PCI_DEVICE_ID_INTEL_RAID_SRCS16 0x1960 +#define PCI_SUBSYS_ID_INTEL_RAID_SRCS16 0x0523 + +#define PCI_DEVICE_ID_INTEL_RAID_SRCU41L_LAKE_SHETEK 0x1960 +#define PCI_SUBSYS_ID_INTEL_RAID_SRCU41L_LAKE_SHETEK 0x0520 + +#define PCI_SUBSYS_ID_PERC3_QC 0x0471 +#define PCI_SUBSYS_ID_PERC3_DC 0x0493 +#define PCI_SUBSYS_ID_PERC3_SC 0x0475 +#define PCI_SUBSYS_ID_CERC_ATA100_4CH 0x0511 + + +#define MBOX_MAX_SCSI_CMDS 128 // number of cmds reserved for kernel +#define MBOX_MAX_USER_CMDS 32 // number of cmds for applications +#define MBOX_DEF_CMD_PER_LUN 64 // default commands per lun +#define MBOX_DEFAULT_SG_SIZE 26 // default sg size supported by all fw +#define MBOX_MAX_SG_SIZE 32 // maximum scatter-gather list size +#define MBOX_MAX_SECTORS 128 // maximum sectors per IO +#define MBOX_TIMEOUT 30 // timeout value for internal cmds +#define MBOX_BUSY_WAIT 10 // max usec to wait for busy mailbox +#define MBOX_RESET_WAIT 180 // wait these many seconds in reset +#define MBOX_RESET_EXT_WAIT 120 // extended wait reset +#define MBOX_SYNC_WAIT_CNT 0xFFFF // wait loop index for synchronous mode + +#define MBOX_SYNC_DELAY_200 200 // 200 micro-seconds + +/* + * maximum transfer that can happen through the firmware commands issued + * internnaly from the driver. + */ +#define MBOX_IBUF_SIZE 4096 + + +/** + * mbox_ccb_t - command control block specific to mailbox based controllers + * @raw_mbox : raw mailbox pointer + * @mbox : mailbox + * @mbox64 : extended mailbox + * @mbox_dma_h : maibox dma address + * @sgl64 : 64-bit scatter-gather list + * @sgl32 : 32-bit scatter-gather list + * @sgl_dma_h : dma handle for the scatter-gather list + * @pthru : passthru structure + * @pthru_dma_h : dma handle for the passthru structure + * @epthru : extended passthru structure + * @epthru_dma_h : dma handle for extended passthru structure + * @buf_dma_h : dma handle for buffers w/o sg list + * + * command control block specific to the mailbox based controllers + */ +typedef struct { + uint8_t *raw_mbox; + mbox_t *mbox; + mbox64_t *mbox64; + dma_addr_t mbox_dma_h; + mbox_sgl64 *sgl64; + mbox_sgl32 *sgl32; + dma_addr_t sgl_dma_h; + mraid_passthru_t *pthru; + dma_addr_t pthru_dma_h; + mraid_epassthru_t *epthru; + dma_addr_t epthru_dma_h; + dma_addr_t buf_dma_h; +} mbox_ccb_t; + + +/** + * mraid_device_t - adapter soft state structure for mailbox controllers + * @una_mbox64 : 64-bit mbox - unaligned + * @una_mbox64_dma : mbox dma addr - unaligned + * @mbox : 32-bit mbox - aligned + * @mbox64 : 64-bit mbox - aligned + * @mbox_dma : mbox dma addr - aligned + * @mailbox_lock : exclusion lock for the mailbox + * @baseport : base port of hba memory + * @baseaddr : mapped addr of hba memory + * @mbox_pool : pool of mailboxes + * @mbox_pool_handle : handle for the mailbox pool memory + * @epthru_pool : a pool for extended passthru commands + * @epthru_pool_handle : handle to the pool above + * @sg_pool : pool of scatter-gather lists for this driver + * @sg_pool_handle : handle to the pool above + * @ccb_list : list of our command control blocks + * @uccb_list : list of cmd control blocks for mgmt module + * @umbox64 : array of mailbox for user commands (cmm) + * @pdrv_state : array for state of each physical drive. + * @last_disp : flag used to show device scanning + * @hw_error : set if FW not responding + * @fast_load : If set, skip physical device scanning + * @channel_class : channel class, RAID or SCSI + * @sysfs_mtx : mutex to serialize access to sysfs res. + * @sysfs_uioc : management packet to issue FW calls from sysfs + * @sysfs_mbox64 : mailbox packet to issue FW calls from sysfs + * @sysfs_buffer : data buffer for FW commands issued from sysfs + * @sysfs_buffer_dma : DMA buffer for FW commands issued from sysfs + * @sysfs_wait_q : wait queue for sysfs operations + * @random_del_supported : set if the random deletion is supported + * @curr_ldmap : current LDID map + * + * Initialization structure for mailbox controllers: memory based and IO based + * All the fields in this structure are LLD specific and may be discovered at + * init() or start() time. + * + * NOTE: The fields of this structures are placed to minimize cache misses + */ +#define MAX_LD_EXTENDED64 64 +typedef struct { + mbox64_t *una_mbox64; + dma_addr_t una_mbox64_dma; + mbox_t *mbox; + mbox64_t *mbox64; + dma_addr_t mbox_dma; + spinlock_t mailbox_lock; + unsigned long baseport; + void __iomem * baseaddr; + struct mraid_pci_blk mbox_pool[MBOX_MAX_SCSI_CMDS]; + struct dma_pool *mbox_pool_handle; + struct mraid_pci_blk epthru_pool[MBOX_MAX_SCSI_CMDS]; + struct dma_pool *epthru_pool_handle; + struct mraid_pci_blk sg_pool[MBOX_MAX_SCSI_CMDS]; + struct dma_pool *sg_pool_handle; + mbox_ccb_t ccb_list[MBOX_MAX_SCSI_CMDS]; + mbox_ccb_t uccb_list[MBOX_MAX_USER_CMDS]; + mbox64_t umbox64[MBOX_MAX_USER_CMDS]; + + uint8_t pdrv_state[MBOX_MAX_PHYSICAL_DRIVES]; + uint32_t last_disp; + int hw_error; + int fast_load; + uint8_t channel_class; + struct mutex sysfs_mtx; + uioc_t *sysfs_uioc; + mbox64_t *sysfs_mbox64; + caddr_t sysfs_buffer; + dma_addr_t sysfs_buffer_dma; + wait_queue_head_t sysfs_wait_q; + int random_del_supported; + uint16_t curr_ldmap[MAX_LD_EXTENDED64]; +} mraid_device_t; + +// route to raid device from adapter +#define ADAP2RAIDDEV(adp) ((mraid_device_t *)((adp)->raid_device)) + +#define MAILBOX_LOCK(rdev) (&(rdev)->mailbox_lock) + +// Find out if this channel is a RAID or SCSI +#define IS_RAID_CH(rdev, ch) (((rdev)->channel_class >> (ch)) & 0x01) + + +#define RDINDOOR(rdev) readl((rdev)->baseaddr + 0x20) +#define RDOUTDOOR(rdev) readl((rdev)->baseaddr + 0x2C) +#define WRINDOOR(rdev, value) writel(value, (rdev)->baseaddr + 0x20) +#define WROUTDOOR(rdev, value) writel(value, (rdev)->baseaddr + 0x2C) + +#endif // _MEGARAID_H_ + +// vim: set ts=8 sw=8 tw=78: diff --git a/drivers/scsi/megaraid/megaraid_mm.c b/drivers/scsi/megaraid/megaraid_mm.c new file mode 100644 index 00000000..25506c77 --- /dev/null +++ b/drivers/scsi/megaraid/megaraid_mm.c @@ -0,0 +1,1261 @@ +/* + * + * Linux MegaRAID device driver + * + * Copyright (c) 2003-2004 LSI Logic Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * FILE : megaraid_mm.c + * Version : v2.20.2.7 (Jul 16 2006) + * + * Common management module + */ +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/mutex.h> +#include "megaraid_mm.h" + + +// Entry points for char node driver +static DEFINE_MUTEX(mraid_mm_mutex); +static int mraid_mm_open(struct inode *, struct file *); +static long mraid_mm_unlocked_ioctl(struct file *, uint, unsigned long); + + +// routines to convert to and from the old the format +static int mimd_to_kioc(mimd_t __user *, mraid_mmadp_t *, uioc_t *); +static int kioc_to_mimd(uioc_t *, mimd_t __user *); + + +// Helper functions +static int handle_drvrcmd(void __user *, uint8_t, int *); +static int lld_ioctl(mraid_mmadp_t *, uioc_t *); +static void ioctl_done(uioc_t *); +static void lld_timedout(unsigned long); +static void hinfo_to_cinfo(mraid_hba_info_t *, mcontroller_t *); +static mraid_mmadp_t *mraid_mm_get_adapter(mimd_t __user *, int *); +static uioc_t *mraid_mm_alloc_kioc(mraid_mmadp_t *); +static void mraid_mm_dealloc_kioc(mraid_mmadp_t *, uioc_t *); +static int mraid_mm_attach_buf(mraid_mmadp_t *, uioc_t *, int); +static int mraid_mm_setup_dma_pools(mraid_mmadp_t *); +static void mraid_mm_free_adp_resources(mraid_mmadp_t *); +static void mraid_mm_teardown_dma_pools(mraid_mmadp_t *); + +#ifdef CONFIG_COMPAT +static long mraid_mm_compat_ioctl(struct file *, unsigned int, unsigned long); +#endif + +MODULE_AUTHOR("LSI Logic Corporation"); +MODULE_DESCRIPTION("LSI Logic Management Module"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(LSI_COMMON_MOD_VERSION); + +static int dbglevel = CL_ANN; +module_param_named(dlevel, dbglevel, int, 0); +MODULE_PARM_DESC(dlevel, "Debug level (default=0)"); + +EXPORT_SYMBOL(mraid_mm_register_adp); +EXPORT_SYMBOL(mraid_mm_unregister_adp); +EXPORT_SYMBOL(mraid_mm_adapter_app_handle); + +static uint32_t drvr_ver = 0x02200207; + +static int adapters_count_g; +static struct list_head adapters_list_g; + +static wait_queue_head_t wait_q; + +static const struct file_operations lsi_fops = { + .open = mraid_mm_open, + .unlocked_ioctl = mraid_mm_unlocked_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = mraid_mm_compat_ioctl, +#endif + .owner = THIS_MODULE, + .llseek = noop_llseek, +}; + +static struct miscdevice megaraid_mm_dev = { + .minor = MISC_DYNAMIC_MINOR, + .name = "megadev0", + .fops = &lsi_fops, +}; + +/** + * mraid_mm_open - open routine for char node interface + * @inode : unused + * @filep : unused + * + * Allow ioctl operations by apps only if they have superuser privilege. + */ +static int +mraid_mm_open(struct inode *inode, struct file *filep) +{ + /* + * Only allow superuser to access private ioctl interface + */ + if (!capable(CAP_SYS_ADMIN)) return (-EACCES); + + return 0; +} + +/** + * mraid_mm_ioctl - module entry-point for ioctls + * @inode : inode (ignored) + * @filep : file operations pointer (ignored) + * @cmd : ioctl command + * @arg : user ioctl packet + */ +static int +mraid_mm_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) +{ + uioc_t *kioc; + char signature[EXT_IOCTL_SIGN_SZ] = {0}; + int rval; + mraid_mmadp_t *adp; + uint8_t old_ioctl; + int drvrcmd_rval; + void __user *argp = (void __user *)arg; + + /* + * Make sure only USCSICMD are issued through this interface. + * MIMD application would still fire different command. + */ + + if ((_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD)) { + return (-EINVAL); + } + + /* + * Look for signature to see if this is the new or old ioctl format. + */ + if (copy_from_user(signature, argp, EXT_IOCTL_SIGN_SZ)) { + con_log(CL_ANN, (KERN_WARNING + "megaraid cmm: copy from usr addr failed\n")); + return (-EFAULT); + } + + if (memcmp(signature, EXT_IOCTL_SIGN, EXT_IOCTL_SIGN_SZ) == 0) + old_ioctl = 0; + else + old_ioctl = 1; + + /* + * At present, we don't support the new ioctl packet + */ + if (!old_ioctl ) + return (-EINVAL); + + /* + * If it is a driver ioctl (as opposed to fw ioctls), then we can + * handle the command locally. rval > 0 means it is not a drvr cmd + */ + rval = handle_drvrcmd(argp, old_ioctl, &drvrcmd_rval); + + if (rval < 0) + return rval; + else if (rval == 0) + return drvrcmd_rval; + + rval = 0; + if ((adp = mraid_mm_get_adapter(argp, &rval)) == NULL) { + return rval; + } + + /* + * Check if adapter can accept ioctl. We may have marked it offline + * if any previous kioc had timedout on this controller. + */ + if (!adp->quiescent) { + con_log(CL_ANN, (KERN_WARNING + "megaraid cmm: controller cannot accept cmds due to " + "earlier errors\n" )); + return -EFAULT; + } + + /* + * The following call will block till a kioc is available + */ + kioc = mraid_mm_alloc_kioc(adp); + + /* + * User sent the old mimd_t ioctl packet. Convert it to uioc_t. + */ + if ((rval = mimd_to_kioc(argp, adp, kioc))) { + mraid_mm_dealloc_kioc(adp, kioc); + return rval; + } + + kioc->done = ioctl_done; + + /* + * Issue the IOCTL to the low level driver. After the IOCTL completes + * release the kioc if and only if it was _not_ timedout. If it was + * timedout, that means that resources are still with low level driver. + */ + if ((rval = lld_ioctl(adp, kioc))) { + + if (!kioc->timedout) + mraid_mm_dealloc_kioc(adp, kioc); + + return rval; + } + + /* + * Convert the kioc back to user space + */ + rval = kioc_to_mimd(kioc, argp); + + /* + * Return the kioc to free pool + */ + mraid_mm_dealloc_kioc(adp, kioc); + + return rval; +} + +static long +mraid_mm_unlocked_ioctl(struct file *filep, unsigned int cmd, + unsigned long arg) +{ + int err; + + /* inconsistent: mraid_mm_compat_ioctl doesn't take the BKL */ + mutex_lock(&mraid_mm_mutex); + err = mraid_mm_ioctl(filep, cmd, arg); + mutex_unlock(&mraid_mm_mutex); + + return err; +} + +/** + * mraid_mm_get_adapter - Returns corresponding adapters for the mimd packet + * @umimd : User space mimd_t ioctl packet + * @rval : returned success/error status + * + * The function return value is a pointer to the located @adapter. + */ +static mraid_mmadp_t * +mraid_mm_get_adapter(mimd_t __user *umimd, int *rval) +{ + mraid_mmadp_t *adapter; + mimd_t mimd; + uint32_t adapno; + int iterator; + + + if (copy_from_user(&mimd, umimd, sizeof(mimd_t))) { + *rval = -EFAULT; + return NULL; + } + + adapno = GETADAP(mimd.ui.fcs.adapno); + + if (adapno >= adapters_count_g) { + *rval = -ENODEV; + return NULL; + } + + adapter = NULL; + iterator = 0; + + list_for_each_entry(adapter, &adapters_list_g, list) { + if (iterator++ == adapno) break; + } + + if (!adapter) { + *rval = -ENODEV; + return NULL; + } + + return adapter; +} + +/** + * handle_drvrcmd - Checks if the opcode is a driver cmd and if it is, handles it. + * @arg : packet sent by the user app + * @old_ioctl : mimd if 1; uioc otherwise + * @rval : pointer for command's returned value (not function status) + */ +static int +handle_drvrcmd(void __user *arg, uint8_t old_ioctl, int *rval) +{ + mimd_t __user *umimd; + mimd_t kmimd; + uint8_t opcode; + uint8_t subopcode; + + if (old_ioctl) + goto old_packet; + else + goto new_packet; + +new_packet: + return (-ENOTSUPP); + +old_packet: + *rval = 0; + umimd = arg; + + if (copy_from_user(&kmimd, umimd, sizeof(mimd_t))) + return (-EFAULT); + + opcode = kmimd.ui.fcs.opcode; + subopcode = kmimd.ui.fcs.subopcode; + + /* + * If the opcode is 0x82 and the subopcode is either GET_DRVRVER or + * GET_NUMADP, then we can handle. Otherwise we should return 1 to + * indicate that we cannot handle this. + */ + if (opcode != 0x82) + return 1; + + switch (subopcode) { + + case MEGAIOC_QDRVRVER: + + if (copy_to_user(kmimd.data, &drvr_ver, sizeof(uint32_t))) + return (-EFAULT); + + return 0; + + case MEGAIOC_QNADAP: + + *rval = adapters_count_g; + + if (copy_to_user(kmimd.data, &adapters_count_g, + sizeof(uint32_t))) + return (-EFAULT); + + return 0; + + default: + /* cannot handle */ + return 1; + } + + return 0; +} + + +/** + * mimd_to_kioc - Converter from old to new ioctl format + * @umimd : user space old MIMD IOCTL + * @adp : adapter softstate + * @kioc : kernel space new format IOCTL + * + * Routine to convert MIMD interface IOCTL to new interface IOCTL packet. The + * new packet is in kernel space so that driver can perform operations on it + * freely. + */ + +static int +mimd_to_kioc(mimd_t __user *umimd, mraid_mmadp_t *adp, uioc_t *kioc) +{ + mbox64_t *mbox64; + mbox_t *mbox; + mraid_passthru_t *pthru32; + uint32_t adapno; + uint8_t opcode; + uint8_t subopcode; + mimd_t mimd; + + if (copy_from_user(&mimd, umimd, sizeof(mimd_t))) + return (-EFAULT); + + /* + * Applications are not allowed to send extd pthru + */ + if ((mimd.mbox[0] == MBOXCMD_PASSTHRU64) || + (mimd.mbox[0] == MBOXCMD_EXTPTHRU)) + return (-EINVAL); + + opcode = mimd.ui.fcs.opcode; + subopcode = mimd.ui.fcs.subopcode; + adapno = GETADAP(mimd.ui.fcs.adapno); + + if (adapno >= adapters_count_g) + return (-ENODEV); + + kioc->adapno = adapno; + kioc->mb_type = MBOX_LEGACY; + kioc->app_type = APPTYPE_MIMD; + + switch (opcode) { + + case 0x82: + + if (subopcode == MEGAIOC_QADAPINFO) { + + kioc->opcode = GET_ADAP_INFO; + kioc->data_dir = UIOC_RD; + kioc->xferlen = sizeof(mraid_hba_info_t); + + if (mraid_mm_attach_buf(adp, kioc, kioc->xferlen)) + return (-ENOMEM); + } + else { + con_log(CL_ANN, (KERN_WARNING + "megaraid cmm: Invalid subop\n")); + return (-EINVAL); + } + + break; + + case 0x81: + + kioc->opcode = MBOX_CMD; + kioc->xferlen = mimd.ui.fcs.length; + kioc->user_data_len = kioc->xferlen; + kioc->user_data = mimd.ui.fcs.buffer; + + if (mraid_mm_attach_buf(adp, kioc, kioc->xferlen)) + return (-ENOMEM); + + if (mimd.outlen) kioc->data_dir = UIOC_RD; + if (mimd.inlen) kioc->data_dir |= UIOC_WR; + + break; + + case 0x80: + + kioc->opcode = MBOX_CMD; + kioc->xferlen = (mimd.outlen > mimd.inlen) ? + mimd.outlen : mimd.inlen; + kioc->user_data_len = kioc->xferlen; + kioc->user_data = mimd.data; + + if (mraid_mm_attach_buf(adp, kioc, kioc->xferlen)) + return (-ENOMEM); + + if (mimd.outlen) kioc->data_dir = UIOC_RD; + if (mimd.inlen) kioc->data_dir |= UIOC_WR; + + break; + + default: + return (-EINVAL); + } + + /* + * If driver command, nothing else to do + */ + if (opcode == 0x82) + return 0; + + /* + * This is a mailbox cmd; copy the mailbox from mimd + */ + mbox64 = (mbox64_t *)((unsigned long)kioc->cmdbuf); + mbox = &mbox64->mbox32; + memcpy(mbox, mimd.mbox, 14); + + if (mbox->cmd != MBOXCMD_PASSTHRU) { // regular DCMD + + mbox->xferaddr = (uint32_t)kioc->buf_paddr; + + if (kioc->data_dir & UIOC_WR) { + if (copy_from_user(kioc->buf_vaddr, kioc->user_data, + kioc->xferlen)) { + return (-EFAULT); + } + } + + return 0; + } + + /* + * This is a regular 32-bit pthru cmd; mbox points to pthru struct. + * Just like in above case, the beginning for memblk is treated as + * a mailbox. The passthru will begin at next 1K boundary. And the + * data will start 1K after that. + */ + pthru32 = kioc->pthru32; + kioc->user_pthru = &umimd->pthru; + mbox->xferaddr = (uint32_t)kioc->pthru32_h; + + if (copy_from_user(pthru32, kioc->user_pthru, + sizeof(mraid_passthru_t))) { + return (-EFAULT); + } + + pthru32->dataxferaddr = kioc->buf_paddr; + if (kioc->data_dir & UIOC_WR) { + if (copy_from_user(kioc->buf_vaddr, kioc->user_data, + pthru32->dataxferlen)) { + return (-EFAULT); + } + } + + return 0; +} + +/** + * mraid_mm_attch_buf - Attach a free dma buffer for required size + * @adp : Adapter softstate + * @kioc : kioc that the buffer needs to be attached to + * @xferlen : required length for buffer + * + * First we search for a pool with smallest buffer that is >= @xferlen. If + * that pool has no free buffer, we will try for the next bigger size. If none + * is available, we will try to allocate the smallest buffer that is >= + * @xferlen and attach it the pool. + */ +static int +mraid_mm_attach_buf(mraid_mmadp_t *adp, uioc_t *kioc, int xferlen) +{ + mm_dmapool_t *pool; + int right_pool = -1; + unsigned long flags; + int i; + + kioc->pool_index = -1; + kioc->buf_vaddr = NULL; + kioc->buf_paddr = 0; + kioc->free_buf = 0; + + /* + * We need xferlen amount of memory. See if we can get it from our + * dma pools. If we don't get exact size, we will try bigger buffer + */ + + for (i = 0; i < MAX_DMA_POOLS; i++) { + + pool = &adp->dma_pool_list[i]; + + if (xferlen > pool->buf_size) + continue; + + if (right_pool == -1) + right_pool = i; + + spin_lock_irqsave(&pool->lock, flags); + + if (!pool->in_use) { + + pool->in_use = 1; + kioc->pool_index = i; + kioc->buf_vaddr = pool->vaddr; + kioc->buf_paddr = pool->paddr; + + spin_unlock_irqrestore(&pool->lock, flags); + return 0; + } + else { + spin_unlock_irqrestore(&pool->lock, flags); + continue; + } + } + + /* + * If xferlen doesn't match any of our pools, return error + */ + if (right_pool == -1) + return -EINVAL; + + /* + * We did not get any buffer from the preallocated pool. Let us try + * to allocate one new buffer. NOTE: This is a blocking call. + */ + pool = &adp->dma_pool_list[right_pool]; + + spin_lock_irqsave(&pool->lock, flags); + + kioc->pool_index = right_pool; + kioc->free_buf = 1; + kioc->buf_vaddr = pci_pool_alloc(pool->handle, GFP_KERNEL, + &kioc->buf_paddr); + spin_unlock_irqrestore(&pool->lock, flags); + + if (!kioc->buf_vaddr) + return -ENOMEM; + + return 0; +} + +/** + * mraid_mm_alloc_kioc - Returns a uioc_t from free list + * @adp : Adapter softstate for this module + * + * The kioc_semaphore is initialized with number of kioc nodes in the + * free kioc pool. If the kioc pool is empty, this function blocks till + * a kioc becomes free. + */ +static uioc_t * +mraid_mm_alloc_kioc(mraid_mmadp_t *adp) +{ + uioc_t *kioc; + struct list_head* head; + unsigned long flags; + + down(&adp->kioc_semaphore); + + spin_lock_irqsave(&adp->kioc_pool_lock, flags); + + head = &adp->kioc_pool; + + if (list_empty(head)) { + up(&adp->kioc_semaphore); + spin_unlock_irqrestore(&adp->kioc_pool_lock, flags); + + con_log(CL_ANN, ("megaraid cmm: kioc list empty!\n")); + return NULL; + } + + kioc = list_entry(head->next, uioc_t, list); + list_del_init(&kioc->list); + + spin_unlock_irqrestore(&adp->kioc_pool_lock, flags); + + memset((caddr_t)(unsigned long)kioc->cmdbuf, 0, sizeof(mbox64_t)); + memset((caddr_t) kioc->pthru32, 0, sizeof(mraid_passthru_t)); + + kioc->buf_vaddr = NULL; + kioc->buf_paddr = 0; + kioc->pool_index =-1; + kioc->free_buf = 0; + kioc->user_data = NULL; + kioc->user_data_len = 0; + kioc->user_pthru = NULL; + kioc->timedout = 0; + + return kioc; +} + +/** + * mraid_mm_dealloc_kioc - Return kioc to free pool + * @adp : Adapter softstate + * @kioc : uioc_t node to be returned to free pool + */ +static void +mraid_mm_dealloc_kioc(mraid_mmadp_t *adp, uioc_t *kioc) +{ + mm_dmapool_t *pool; + unsigned long flags; + + if (kioc->pool_index != -1) { + pool = &adp->dma_pool_list[kioc->pool_index]; + + /* This routine may be called in non-isr context also */ + spin_lock_irqsave(&pool->lock, flags); + + /* + * While attaching the dma buffer, if we didn't get the + * required buffer from the pool, we would have allocated + * it at the run time and set the free_buf flag. We must + * free that buffer. Otherwise, just mark that the buffer is + * not in use + */ + if (kioc->free_buf == 1) + pci_pool_free(pool->handle, kioc->buf_vaddr, + kioc->buf_paddr); + else + pool->in_use = 0; + + spin_unlock_irqrestore(&pool->lock, flags); + } + + /* Return the kioc to the free pool */ + spin_lock_irqsave(&adp->kioc_pool_lock, flags); + list_add(&kioc->list, &adp->kioc_pool); + spin_unlock_irqrestore(&adp->kioc_pool_lock, flags); + + /* increment the free kioc count */ + up(&adp->kioc_semaphore); + + return; +} + +/** + * lld_ioctl - Routine to issue ioctl to low level drvr + * @adp : The adapter handle + * @kioc : The ioctl packet with kernel addresses + */ +static int +lld_ioctl(mraid_mmadp_t *adp, uioc_t *kioc) +{ + int rval; + struct timer_list timer; + struct timer_list *tp = NULL; + + kioc->status = -ENODATA; + rval = adp->issue_uioc(adp->drvr_data, kioc, IOCTL_ISSUE); + + if (rval) return rval; + + /* + * Start the timer + */ + if (adp->timeout > 0) { + tp = &timer; + init_timer(tp); + + tp->function = lld_timedout; + tp->data = (unsigned long)kioc; + tp->expires = jiffies + adp->timeout * HZ; + + add_timer(tp); + } + + /* + * Wait till the low level driver completes the ioctl. After this + * call, the ioctl either completed successfully or timedout. + */ + wait_event(wait_q, (kioc->status != -ENODATA)); + if (tp) { + del_timer_sync(tp); + } + + /* + * If the command had timedout, we mark the controller offline + * before returning + */ + if (kioc->timedout) { + adp->quiescent = 0; + } + + return kioc->status; +} + + +/** + * ioctl_done - callback from the low level driver + * @kioc : completed ioctl packet + */ +static void +ioctl_done(uioc_t *kioc) +{ + uint32_t adapno; + int iterator; + mraid_mmadp_t* adapter; + + /* + * When the kioc returns from driver, make sure it still doesn't + * have ENODATA in status. Otherwise, driver will hang on wait_event + * forever + */ + if (kioc->status == -ENODATA) { + con_log(CL_ANN, (KERN_WARNING + "megaraid cmm: lld didn't change status!\n")); + + kioc->status = -EINVAL; + } + + /* + * Check if this kioc was timedout before. If so, nobody is waiting + * on this kioc. We don't have to wake up anybody. Instead, we just + * have to free the kioc + */ + if (kioc->timedout) { + iterator = 0; + adapter = NULL; + adapno = kioc->adapno; + + con_log(CL_ANN, ( KERN_WARNING "megaraid cmm: completed " + "ioctl that was timedout before\n")); + + list_for_each_entry(adapter, &adapters_list_g, list) { + if (iterator++ == adapno) break; + } + + kioc->timedout = 0; + + if (adapter) { + mraid_mm_dealloc_kioc( adapter, kioc ); + } + } + else { + wake_up(&wait_q); + } +} + + +/** + * lld_timedout - callback from the expired timer + * @ptr : ioctl packet that timed out + */ +static void +lld_timedout(unsigned long ptr) +{ + uioc_t *kioc = (uioc_t *)ptr; + + kioc->status = -ETIME; + kioc->timedout = 1; + + con_log(CL_ANN, (KERN_WARNING "megaraid cmm: ioctl timed out\n")); + + wake_up(&wait_q); +} + + +/** + * kioc_to_mimd - Converter from new back to old format + * @kioc : Kernel space IOCTL packet (successfully issued) + * @mimd : User space MIMD packet + */ +static int +kioc_to_mimd(uioc_t *kioc, mimd_t __user *mimd) +{ + mimd_t kmimd; + uint8_t opcode; + uint8_t subopcode; + + mbox64_t *mbox64; + mraid_passthru_t __user *upthru32; + mraid_passthru_t *kpthru32; + mcontroller_t cinfo; + mraid_hba_info_t *hinfo; + + + if (copy_from_user(&kmimd, mimd, sizeof(mimd_t))) + return (-EFAULT); + + opcode = kmimd.ui.fcs.opcode; + subopcode = kmimd.ui.fcs.subopcode; + + if (opcode == 0x82) { + switch (subopcode) { + + case MEGAIOC_QADAPINFO: + + hinfo = (mraid_hba_info_t *)(unsigned long) + kioc->buf_vaddr; + + hinfo_to_cinfo(hinfo, &cinfo); + + if (copy_to_user(kmimd.data, &cinfo, sizeof(cinfo))) + return (-EFAULT); + + return 0; + + default: + return (-EINVAL); + } + + return 0; + } + + mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; + + if (kioc->user_pthru) { + + upthru32 = kioc->user_pthru; + kpthru32 = kioc->pthru32; + + if (copy_to_user(&upthru32->scsistatus, + &kpthru32->scsistatus, + sizeof(uint8_t))) { + return (-EFAULT); + } + } + + if (kioc->user_data) { + if (copy_to_user(kioc->user_data, kioc->buf_vaddr, + kioc->user_data_len)) { + return (-EFAULT); + } + } + + if (copy_to_user(&mimd->mbox[17], + &mbox64->mbox32.status, sizeof(uint8_t))) { + return (-EFAULT); + } + + return 0; +} + + +/** + * hinfo_to_cinfo - Convert new format hba info into old format + * @hinfo : New format, more comprehensive adapter info + * @cinfo : Old format adapter info to support mimd_t apps + */ +static void +hinfo_to_cinfo(mraid_hba_info_t *hinfo, mcontroller_t *cinfo) +{ + if (!hinfo || !cinfo) + return; + + cinfo->base = hinfo->baseport; + cinfo->irq = hinfo->irq; + cinfo->numldrv = hinfo->num_ldrv; + cinfo->pcibus = hinfo->pci_bus; + cinfo->pcidev = hinfo->pci_slot; + cinfo->pcifun = PCI_FUNC(hinfo->pci_dev_fn); + cinfo->pciid = hinfo->pci_device_id; + cinfo->pcivendor = hinfo->pci_vendor_id; + cinfo->pcislot = hinfo->pci_slot; + cinfo->uid = hinfo->unique_id; +} + + +/** + * mraid_mm_register_adp - Registration routine for low level drivers + * @lld_adp : Adapter objejct + */ +int +mraid_mm_register_adp(mraid_mmadp_t *lld_adp) +{ + mraid_mmadp_t *adapter; + mbox64_t *mbox_list; + uioc_t *kioc; + uint32_t rval; + int i; + + + if (lld_adp->drvr_type != DRVRTYPE_MBOX) + return (-EINVAL); + + adapter = kzalloc(sizeof(mraid_mmadp_t), GFP_KERNEL); + + if (!adapter) + return -ENOMEM; + + + adapter->unique_id = lld_adp->unique_id; + adapter->drvr_type = lld_adp->drvr_type; + adapter->drvr_data = lld_adp->drvr_data; + adapter->pdev = lld_adp->pdev; + adapter->issue_uioc = lld_adp->issue_uioc; + adapter->timeout = lld_adp->timeout; + adapter->max_kioc = lld_adp->max_kioc; + adapter->quiescent = 1; + + /* + * Allocate single blocks of memory for all required kiocs, + * mailboxes and passthru structures. + */ + adapter->kioc_list = kmalloc(sizeof(uioc_t) * lld_adp->max_kioc, + GFP_KERNEL); + adapter->mbox_list = kmalloc(sizeof(mbox64_t) * lld_adp->max_kioc, + GFP_KERNEL); + adapter->pthru_dma_pool = pci_pool_create("megaraid mm pthru pool", + adapter->pdev, + sizeof(mraid_passthru_t), + 16, 0); + + if (!adapter->kioc_list || !adapter->mbox_list || + !adapter->pthru_dma_pool) { + + con_log(CL_ANN, (KERN_WARNING + "megaraid cmm: out of memory, %s %d\n", __func__, + __LINE__)); + + rval = (-ENOMEM); + + goto memalloc_error; + } + + /* + * Slice kioc_list and make a kioc_pool with the individiual kiocs + */ + INIT_LIST_HEAD(&adapter->kioc_pool); + spin_lock_init(&adapter->kioc_pool_lock); + sema_init(&adapter->kioc_semaphore, lld_adp->max_kioc); + + mbox_list = (mbox64_t *)adapter->mbox_list; + + for (i = 0; i < lld_adp->max_kioc; i++) { + + kioc = adapter->kioc_list + i; + kioc->cmdbuf = (uint64_t)(unsigned long)(mbox_list + i); + kioc->pthru32 = pci_pool_alloc(adapter->pthru_dma_pool, + GFP_KERNEL, &kioc->pthru32_h); + + if (!kioc->pthru32) { + + con_log(CL_ANN, (KERN_WARNING + "megaraid cmm: out of memory, %s %d\n", + __func__, __LINE__)); + + rval = (-ENOMEM); + + goto pthru_dma_pool_error; + } + + list_add_tail(&kioc->list, &adapter->kioc_pool); + } + + // Setup the dma pools for data buffers + if ((rval = mraid_mm_setup_dma_pools(adapter)) != 0) { + goto dma_pool_error; + } + + list_add_tail(&adapter->list, &adapters_list_g); + + adapters_count_g++; + + return 0; + +dma_pool_error: + /* Do nothing */ + +pthru_dma_pool_error: + + for (i = 0; i < lld_adp->max_kioc; i++) { + kioc = adapter->kioc_list + i; + if (kioc->pthru32) { + pci_pool_free(adapter->pthru_dma_pool, kioc->pthru32, + kioc->pthru32_h); + } + } + +memalloc_error: + + kfree(adapter->kioc_list); + kfree(adapter->mbox_list); + + if (adapter->pthru_dma_pool) + pci_pool_destroy(adapter->pthru_dma_pool); + + kfree(adapter); + + return rval; +} + + +/** + * mraid_mm_adapter_app_handle - return the application handle for this adapter + * @unique_id : adapter unique identifier + * + * For the given driver data, locate the adapter in our global list and + * return the corresponding handle, which is also used by applications to + * uniquely identify an adapter. + * + * Return adapter handle if found in the list. + * Return 0 if adapter could not be located, should never happen though. + */ +uint32_t +mraid_mm_adapter_app_handle(uint32_t unique_id) +{ + mraid_mmadp_t *adapter; + mraid_mmadp_t *tmp; + int index = 0; + + list_for_each_entry_safe(adapter, tmp, &adapters_list_g, list) { + + if (adapter->unique_id == unique_id) { + + return MKADAP(index); + } + + index++; + } + + return 0; +} + + +/** + * mraid_mm_setup_dma_pools - Set up dma buffer pools per adapter + * @adp : Adapter softstate + * + * We maintain a pool of dma buffers per each adapter. Each pool has one + * buffer. E.g, we may have 5 dma pools - one each for 4k, 8k ... 64k buffers. + * We have just one 4k buffer in 4k pool, one 8k buffer in 8k pool etc. We + * dont' want to waste too much memory by allocating more buffers per each + * pool. + */ +static int +mraid_mm_setup_dma_pools(mraid_mmadp_t *adp) +{ + mm_dmapool_t *pool; + int bufsize; + int i; + + /* + * Create MAX_DMA_POOLS number of pools + */ + bufsize = MRAID_MM_INIT_BUFF_SIZE; + + for (i = 0; i < MAX_DMA_POOLS; i++){ + + pool = &adp->dma_pool_list[i]; + + pool->buf_size = bufsize; + spin_lock_init(&pool->lock); + + pool->handle = pci_pool_create("megaraid mm data buffer", + adp->pdev, bufsize, 16, 0); + + if (!pool->handle) { + goto dma_pool_setup_error; + } + + pool->vaddr = pci_pool_alloc(pool->handle, GFP_KERNEL, + &pool->paddr); + + if (!pool->vaddr) + goto dma_pool_setup_error; + + bufsize = bufsize * 2; + } + + return 0; + +dma_pool_setup_error: + + mraid_mm_teardown_dma_pools(adp); + return (-ENOMEM); +} + + +/** + * mraid_mm_unregister_adp - Unregister routine for low level drivers + * @unique_id : UID of the adpater + * + * Assumes no outstanding ioctls to llds. + */ +int +mraid_mm_unregister_adp(uint32_t unique_id) +{ + mraid_mmadp_t *adapter; + mraid_mmadp_t *tmp; + + list_for_each_entry_safe(adapter, tmp, &adapters_list_g, list) { + + + if (adapter->unique_id == unique_id) { + + adapters_count_g--; + + list_del_init(&adapter->list); + + mraid_mm_free_adp_resources(adapter); + + kfree(adapter); + + con_log(CL_ANN, ( + "megaraid cmm: Unregistered one adapter:%#x\n", + unique_id)); + + return 0; + } + } + + return (-ENODEV); +} + +/** + * mraid_mm_free_adp_resources - Free adapter softstate + * @adp : Adapter softstate + */ +static void +mraid_mm_free_adp_resources(mraid_mmadp_t *adp) +{ + uioc_t *kioc; + int i; + + mraid_mm_teardown_dma_pools(adp); + + for (i = 0; i < adp->max_kioc; i++) { + + kioc = adp->kioc_list + i; + + pci_pool_free(adp->pthru_dma_pool, kioc->pthru32, + kioc->pthru32_h); + } + + kfree(adp->kioc_list); + kfree(adp->mbox_list); + + pci_pool_destroy(adp->pthru_dma_pool); + + + return; +} + + +/** + * mraid_mm_teardown_dma_pools - Free all per adapter dma buffers + * @adp : Adapter softstate + */ +static void +mraid_mm_teardown_dma_pools(mraid_mmadp_t *adp) +{ + int i; + mm_dmapool_t *pool; + + for (i = 0; i < MAX_DMA_POOLS; i++) { + + pool = &adp->dma_pool_list[i]; + + if (pool->handle) { + + if (pool->vaddr) + pci_pool_free(pool->handle, pool->vaddr, + pool->paddr); + + pci_pool_destroy(pool->handle); + pool->handle = NULL; + } + } + + return; +} + +/** + * mraid_mm_init - Module entry point + */ +static int __init +mraid_mm_init(void) +{ + int err; + + // Announce the driver version + con_log(CL_ANN, (KERN_INFO "megaraid cmm: %s %s\n", + LSI_COMMON_MOD_VERSION, LSI_COMMON_MOD_EXT_VERSION)); + + err = misc_register(&megaraid_mm_dev); + if (err < 0) { + con_log(CL_ANN, ("megaraid cmm: cannot register misc device\n")); + return err; + } + + init_waitqueue_head(&wait_q); + + INIT_LIST_HEAD(&adapters_list_g); + + return 0; +} + + +#ifdef CONFIG_COMPAT +/** + * mraid_mm_compat_ioctl - 32bit to 64bit ioctl conversion routine + * @filep : file operations pointer (ignored) + * @cmd : ioctl command + * @arg : user ioctl packet + */ +static long +mraid_mm_compat_ioctl(struct file *filep, unsigned int cmd, + unsigned long arg) +{ + int err; + + err = mraid_mm_ioctl(filep, cmd, arg); + + return err; +} +#endif + +/** + * mraid_mm_exit - Module exit point + */ +static void __exit +mraid_mm_exit(void) +{ + con_log(CL_DLEVEL1 , ("exiting common mod\n")); + + misc_deregister(&megaraid_mm_dev); +} + +module_init(mraid_mm_init); +module_exit(mraid_mm_exit); + +/* vi: set ts=8 sw=8 tw=78: */ diff --git a/drivers/scsi/megaraid/megaraid_mm.h b/drivers/scsi/megaraid/megaraid_mm.h new file mode 100644 index 00000000..55b425c0 --- /dev/null +++ b/drivers/scsi/megaraid/megaraid_mm.h @@ -0,0 +1,101 @@ +/* + * + * Linux MegaRAID device driver + * + * Copyright (c) 2003-2004 LSI Logic Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * FILE : megaraid_mm.h + */ + +#ifndef MEGARAID_MM_H +#define MEGARAID_MM_H + +#include <linux/spinlock.h> +#include <linux/fs.h> +#include <asm/uaccess.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/pci.h> +#include <linux/list.h> +#include <linux/miscdevice.h> + +#include "mbox_defs.h" +#include "megaraid_ioctl.h" + + +#define LSI_COMMON_MOD_VERSION "2.20.2.7" +#define LSI_COMMON_MOD_EXT_VERSION \ + "(Release Date: Sun Jul 16 00:01:03 EST 2006)" + + +#define LSI_DBGLVL dbglevel + +// The smallest dma pool +#define MRAID_MM_INIT_BUFF_SIZE 4096 + +/** + * mimd_t : Old style ioctl packet structure (deprecated) + * + * @inlen : + * @outlen : + * @fca : + * @opcode : + * @subopcode : + * @adapno : + * @buffer : + * @pad : + * @length : + * @mbox : + * @pthru : + * @data : + * @pad : + * + * Note : This structure is DEPRECATED. New applications must use + * : uioc_t structure instead. All new hba drivers use the new + * : format. If we get this mimd packet, we will convert it into + * : new uioc_t format and send it to the hba drivers. + */ + +typedef struct mimd { + + uint32_t inlen; + uint32_t outlen; + + union { + uint8_t fca[16]; + struct { + uint8_t opcode; + uint8_t subopcode; + uint16_t adapno; +#if BITS_PER_LONG == 32 + uint8_t __user *buffer; + uint8_t pad[4]; +#endif +#if BITS_PER_LONG == 64 + uint8_t __user *buffer; +#endif + uint32_t length; + } __attribute__ ((packed)) fcs; + } __attribute__ ((packed)) ui; + + uint8_t mbox[18]; /* 16 bytes + 2 status bytes */ + mraid_passthru_t pthru; + +#if BITS_PER_LONG == 32 + char __user *data; /* buffer <= 4096 for 0x80 commands */ + char pad[4]; +#endif +#if BITS_PER_LONG == 64 + char __user *data; +#endif + +} __attribute__ ((packed))mimd_t; + +#endif // MEGARAID_MM_H + +// vi: set ts=8 sw=8 tw=78: diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h new file mode 100644 index 00000000..e5f416f8 --- /dev/null +++ b/drivers/scsi/megaraid/megaraid_sas.h @@ -0,0 +1,1492 @@ +/* + * Linux MegaRAID driver for SAS based RAID controllers + * + * Copyright (c) 2009-2011 LSI Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * FILE: megaraid_sas.h + * + * Authors: LSI Corporation + * + * Send feedback to: <megaraidlinux@lsi.com> + * + * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 + * ATTN: Linuxraid + */ + +#ifndef LSI_MEGARAID_SAS_H +#define LSI_MEGARAID_SAS_H + +/* + * MegaRAID SAS Driver meta data + */ +#define MEGASAS_VERSION "00.00.06.14-rc1" +#define MEGASAS_RELDATE "Jan. 6, 2012" +#define MEGASAS_EXT_VERSION "Fri. Jan. 6 17:00:00 PDT 2012" + +/* + * Device IDs + */ +#define PCI_DEVICE_ID_LSI_SAS1078R 0x0060 +#define PCI_DEVICE_ID_LSI_SAS1078DE 0x007C +#define PCI_DEVICE_ID_LSI_VERDE_ZCR 0x0413 +#define PCI_DEVICE_ID_LSI_SAS1078GEN2 0x0078 +#define PCI_DEVICE_ID_LSI_SAS0079GEN2 0x0079 +#define PCI_DEVICE_ID_LSI_SAS0073SKINNY 0x0073 +#define PCI_DEVICE_ID_LSI_SAS0071SKINNY 0x0071 +#define PCI_DEVICE_ID_LSI_FUSION 0x005b +#define PCI_DEVICE_ID_LSI_INVADER 0x005d + +/* + * ===================================== + * MegaRAID SAS MFI firmware definitions + * ===================================== + */ + +/* + * MFI stands for MegaRAID SAS FW Interface. This is just a moniker for + * protocol between the software and firmware. Commands are issued using + * "message frames" + */ + +/* + * FW posts its state in upper 4 bits of outbound_msg_0 register + */ +#define MFI_STATE_MASK 0xF0000000 +#define MFI_STATE_UNDEFINED 0x00000000 +#define MFI_STATE_BB_INIT 0x10000000 +#define MFI_STATE_FW_INIT 0x40000000 +#define MFI_STATE_WAIT_HANDSHAKE 0x60000000 +#define MFI_STATE_FW_INIT_2 0x70000000 +#define MFI_STATE_DEVICE_SCAN 0x80000000 +#define MFI_STATE_BOOT_MESSAGE_PENDING 0x90000000 +#define MFI_STATE_FLUSH_CACHE 0xA0000000 +#define MFI_STATE_READY 0xB0000000 +#define MFI_STATE_OPERATIONAL 0xC0000000 +#define MFI_STATE_FAULT 0xF0000000 +#define MFI_RESET_REQUIRED 0x00000001 +#define MFI_RESET_ADAPTER 0x00000002 +#define MEGAMFI_FRAME_SIZE 64 + +/* + * During FW init, clear pending cmds & reset state using inbound_msg_0 + * + * ABORT : Abort all pending cmds + * READY : Move from OPERATIONAL to READY state; discard queue info + * MFIMODE : Discard (possible) low MFA posted in 64-bit mode (??) + * CLR_HANDSHAKE: FW is waiting for HANDSHAKE from BIOS or Driver + * HOTPLUG : Resume from Hotplug + * MFI_STOP_ADP : Send signal to FW to stop processing + */ +#define WRITE_SEQUENCE_OFFSET (0x0000000FC) /* I20 */ +#define HOST_DIAGNOSTIC_OFFSET (0x000000F8) /* I20 */ +#define DIAG_WRITE_ENABLE (0x00000080) +#define DIAG_RESET_ADAPTER (0x00000004) + +#define MFI_ADP_RESET 0x00000040 +#define MFI_INIT_ABORT 0x00000001 +#define MFI_INIT_READY 0x00000002 +#define MFI_INIT_MFIMODE 0x00000004 +#define MFI_INIT_CLEAR_HANDSHAKE 0x00000008 +#define MFI_INIT_HOTPLUG 0x00000010 +#define MFI_STOP_ADP 0x00000020 +#define MFI_RESET_FLAGS MFI_INIT_READY| \ + MFI_INIT_MFIMODE| \ + MFI_INIT_ABORT + +/* + * MFI frame flags + */ +#define MFI_FRAME_POST_IN_REPLY_QUEUE 0x0000 +#define MFI_FRAME_DONT_POST_IN_REPLY_QUEUE 0x0001 +#define MFI_FRAME_SGL32 0x0000 +#define MFI_FRAME_SGL64 0x0002 +#define MFI_FRAME_SENSE32 0x0000 +#define MFI_FRAME_SENSE64 0x0004 +#define MFI_FRAME_DIR_NONE 0x0000 +#define MFI_FRAME_DIR_WRITE 0x0008 +#define MFI_FRAME_DIR_READ 0x0010 +#define MFI_FRAME_DIR_BOTH 0x0018 +#define MFI_FRAME_IEEE 0x0020 + +/* + * Definition for cmd_status + */ +#define MFI_CMD_STATUS_POLL_MODE 0xFF + +/* + * MFI command opcodes + */ +#define MFI_CMD_INIT 0x00 +#define MFI_CMD_LD_READ 0x01 +#define MFI_CMD_LD_WRITE 0x02 +#define MFI_CMD_LD_SCSI_IO 0x03 +#define MFI_CMD_PD_SCSI_IO 0x04 +#define MFI_CMD_DCMD 0x05 +#define MFI_CMD_ABORT 0x06 +#define MFI_CMD_SMP 0x07 +#define MFI_CMD_STP 0x08 +#define MFI_CMD_INVALID 0xff + +#define MR_DCMD_CTRL_GET_INFO 0x01010000 +#define MR_DCMD_LD_GET_LIST 0x03010000 + +#define MR_DCMD_CTRL_CACHE_FLUSH 0x01101000 +#define MR_FLUSH_CTRL_CACHE 0x01 +#define MR_FLUSH_DISK_CACHE 0x02 + +#define MR_DCMD_CTRL_SHUTDOWN 0x01050000 +#define MR_DCMD_HIBERNATE_SHUTDOWN 0x01060000 +#define MR_ENABLE_DRIVE_SPINDOWN 0x01 + +#define MR_DCMD_CTRL_EVENT_GET_INFO 0x01040100 +#define MR_DCMD_CTRL_EVENT_GET 0x01040300 +#define MR_DCMD_CTRL_EVENT_WAIT 0x01040500 +#define MR_DCMD_LD_GET_PROPERTIES 0x03030000 + +#define MR_DCMD_CLUSTER 0x08000000 +#define MR_DCMD_CLUSTER_RESET_ALL 0x08010100 +#define MR_DCMD_CLUSTER_RESET_LD 0x08010200 +#define MR_DCMD_PD_LIST_QUERY 0x02010100 + +/* + * MFI command completion codes + */ +enum MFI_STAT { + MFI_STAT_OK = 0x00, + MFI_STAT_INVALID_CMD = 0x01, + MFI_STAT_INVALID_DCMD = 0x02, + MFI_STAT_INVALID_PARAMETER = 0x03, + MFI_STAT_INVALID_SEQUENCE_NUMBER = 0x04, + MFI_STAT_ABORT_NOT_POSSIBLE = 0x05, + MFI_STAT_APP_HOST_CODE_NOT_FOUND = 0x06, + MFI_STAT_APP_IN_USE = 0x07, + MFI_STAT_APP_NOT_INITIALIZED = 0x08, + MFI_STAT_ARRAY_INDEX_INVALID = 0x09, + MFI_STAT_ARRAY_ROW_NOT_EMPTY = 0x0a, + MFI_STAT_CONFIG_RESOURCE_CONFLICT = 0x0b, + MFI_STAT_DEVICE_NOT_FOUND = 0x0c, + MFI_STAT_DRIVE_TOO_SMALL = 0x0d, + MFI_STAT_FLASH_ALLOC_FAIL = 0x0e, + MFI_STAT_FLASH_BUSY = 0x0f, + MFI_STAT_FLASH_ERROR = 0x10, + MFI_STAT_FLASH_IMAGE_BAD = 0x11, + MFI_STAT_FLASH_IMAGE_INCOMPLETE = 0x12, + MFI_STAT_FLASH_NOT_OPEN = 0x13, + MFI_STAT_FLASH_NOT_STARTED = 0x14, + MFI_STAT_FLUSH_FAILED = 0x15, + MFI_STAT_HOST_CODE_NOT_FOUNT = 0x16, + MFI_STAT_LD_CC_IN_PROGRESS = 0x17, + MFI_STAT_LD_INIT_IN_PROGRESS = 0x18, + MFI_STAT_LD_LBA_OUT_OF_RANGE = 0x19, + MFI_STAT_LD_MAX_CONFIGURED = 0x1a, + MFI_STAT_LD_NOT_OPTIMAL = 0x1b, + MFI_STAT_LD_RBLD_IN_PROGRESS = 0x1c, + MFI_STAT_LD_RECON_IN_PROGRESS = 0x1d, + MFI_STAT_LD_WRONG_RAID_LEVEL = 0x1e, + MFI_STAT_MAX_SPARES_EXCEEDED = 0x1f, + MFI_STAT_MEMORY_NOT_AVAILABLE = 0x20, + MFI_STAT_MFC_HW_ERROR = 0x21, + MFI_STAT_NO_HW_PRESENT = 0x22, + MFI_STAT_NOT_FOUND = 0x23, + MFI_STAT_NOT_IN_ENCL = 0x24, + MFI_STAT_PD_CLEAR_IN_PROGRESS = 0x25, + MFI_STAT_PD_TYPE_WRONG = 0x26, + MFI_STAT_PR_DISABLED = 0x27, + MFI_STAT_ROW_INDEX_INVALID = 0x28, + MFI_STAT_SAS_CONFIG_INVALID_ACTION = 0x29, + MFI_STAT_SAS_CONFIG_INVALID_DATA = 0x2a, + MFI_STAT_SAS_CONFIG_INVALID_PAGE = 0x2b, + MFI_STAT_SAS_CONFIG_INVALID_TYPE = 0x2c, + MFI_STAT_SCSI_DONE_WITH_ERROR = 0x2d, + MFI_STAT_SCSI_IO_FAILED = 0x2e, + MFI_STAT_SCSI_RESERVATION_CONFLICT = 0x2f, + MFI_STAT_SHUTDOWN_FAILED = 0x30, + MFI_STAT_TIME_NOT_SET = 0x31, + MFI_STAT_WRONG_STATE = 0x32, + MFI_STAT_LD_OFFLINE = 0x33, + MFI_STAT_PEER_NOTIFICATION_REJECTED = 0x34, + MFI_STAT_PEER_NOTIFICATION_FAILED = 0x35, + MFI_STAT_RESERVATION_IN_PROGRESS = 0x36, + MFI_STAT_I2C_ERRORS_DETECTED = 0x37, + MFI_STAT_PCI_ERRORS_DETECTED = 0x38, + MFI_STAT_CONFIG_SEQ_MISMATCH = 0x67, + + MFI_STAT_INVALID_STATUS = 0xFF +}; + +/* + * Number of mailbox bytes in DCMD message frame + */ +#define MFI_MBOX_SIZE 12 + +enum MR_EVT_CLASS { + + MR_EVT_CLASS_DEBUG = -2, + MR_EVT_CLASS_PROGRESS = -1, + MR_EVT_CLASS_INFO = 0, + MR_EVT_CLASS_WARNING = 1, + MR_EVT_CLASS_CRITICAL = 2, + MR_EVT_CLASS_FATAL = 3, + MR_EVT_CLASS_DEAD = 4, + +}; + +enum MR_EVT_LOCALE { + + MR_EVT_LOCALE_LD = 0x0001, + MR_EVT_LOCALE_PD = 0x0002, + MR_EVT_LOCALE_ENCL = 0x0004, + MR_EVT_LOCALE_BBU = 0x0008, + MR_EVT_LOCALE_SAS = 0x0010, + MR_EVT_LOCALE_CTRL = 0x0020, + MR_EVT_LOCALE_CONFIG = 0x0040, + MR_EVT_LOCALE_CLUSTER = 0x0080, + MR_EVT_LOCALE_ALL = 0xffff, + +}; + +enum MR_EVT_ARGS { + + MR_EVT_ARGS_NONE, + MR_EVT_ARGS_CDB_SENSE, + MR_EVT_ARGS_LD, + MR_EVT_ARGS_LD_COUNT, + MR_EVT_ARGS_LD_LBA, + MR_EVT_ARGS_LD_OWNER, + MR_EVT_ARGS_LD_LBA_PD_LBA, + MR_EVT_ARGS_LD_PROG, + MR_EVT_ARGS_LD_STATE, + MR_EVT_ARGS_LD_STRIP, + MR_EVT_ARGS_PD, + MR_EVT_ARGS_PD_ERR, + MR_EVT_ARGS_PD_LBA, + MR_EVT_ARGS_PD_LBA_LD, + MR_EVT_ARGS_PD_PROG, + MR_EVT_ARGS_PD_STATE, + MR_EVT_ARGS_PCI, + MR_EVT_ARGS_RATE, + MR_EVT_ARGS_STR, + MR_EVT_ARGS_TIME, + MR_EVT_ARGS_ECC, + MR_EVT_ARGS_LD_PROP, + MR_EVT_ARGS_PD_SPARE, + MR_EVT_ARGS_PD_INDEX, + MR_EVT_ARGS_DIAG_PASS, + MR_EVT_ARGS_DIAG_FAIL, + MR_EVT_ARGS_PD_LBA_LBA, + MR_EVT_ARGS_PORT_PHY, + MR_EVT_ARGS_PD_MISSING, + MR_EVT_ARGS_PD_ADDRESS, + MR_EVT_ARGS_BITMAP, + MR_EVT_ARGS_CONNECTOR, + MR_EVT_ARGS_PD_PD, + MR_EVT_ARGS_PD_FRU, + MR_EVT_ARGS_PD_PATHINFO, + MR_EVT_ARGS_PD_POWER_STATE, + MR_EVT_ARGS_GENERIC, +}; + +/* + * define constants for device list query options + */ +enum MR_PD_QUERY_TYPE { + MR_PD_QUERY_TYPE_ALL = 0, + MR_PD_QUERY_TYPE_STATE = 1, + MR_PD_QUERY_TYPE_POWER_STATE = 2, + MR_PD_QUERY_TYPE_MEDIA_TYPE = 3, + MR_PD_QUERY_TYPE_SPEED = 4, + MR_PD_QUERY_TYPE_EXPOSED_TO_HOST = 5, +}; + +#define MR_EVT_CFG_CLEARED 0x0004 +#define MR_EVT_LD_STATE_CHANGE 0x0051 +#define MR_EVT_PD_INSERTED 0x005b +#define MR_EVT_PD_REMOVED 0x0070 +#define MR_EVT_LD_CREATED 0x008a +#define MR_EVT_LD_DELETED 0x008b +#define MR_EVT_FOREIGN_CFG_IMPORTED 0x00db +#define MR_EVT_LD_OFFLINE 0x00fc +#define MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED 0x0152 +#define MAX_LOGICAL_DRIVES 64 + +enum MR_PD_STATE { + MR_PD_STATE_UNCONFIGURED_GOOD = 0x00, + MR_PD_STATE_UNCONFIGURED_BAD = 0x01, + MR_PD_STATE_HOT_SPARE = 0x02, + MR_PD_STATE_OFFLINE = 0x10, + MR_PD_STATE_FAILED = 0x11, + MR_PD_STATE_REBUILD = 0x14, + MR_PD_STATE_ONLINE = 0x18, + MR_PD_STATE_COPYBACK = 0x20, + MR_PD_STATE_SYSTEM = 0x40, + }; + + + /* + * defines the physical drive address structure + */ +struct MR_PD_ADDRESS { + u16 deviceId; + u16 enclDeviceId; + + union { + struct { + u8 enclIndex; + u8 slotNumber; + } mrPdAddress; + struct { + u8 enclPosition; + u8 enclConnectorIndex; + } mrEnclAddress; + }; + u8 scsiDevType; + union { + u8 connectedPortBitmap; + u8 connectedPortNumbers; + }; + u64 sasAddr[2]; +} __packed; + +/* + * defines the physical drive list structure + */ +struct MR_PD_LIST { + u32 size; + u32 count; + struct MR_PD_ADDRESS addr[1]; +} __packed; + +struct megasas_pd_list { + u16 tid; + u8 driveType; + u8 driveState; +} __packed; + + /* + * defines the logical drive reference structure + */ +union MR_LD_REF { + struct { + u8 targetId; + u8 reserved; + u16 seqNum; + }; + u32 ref; +} __packed; + +/* + * defines the logical drive list structure + */ +struct MR_LD_LIST { + u32 ldCount; + u32 reserved; + struct { + union MR_LD_REF ref; + u8 state; + u8 reserved[3]; + u64 size; + } ldList[MAX_LOGICAL_DRIVES]; +} __packed; + +/* + * SAS controller properties + */ +struct megasas_ctrl_prop { + + u16 seq_num; + u16 pred_fail_poll_interval; + u16 intr_throttle_count; + u16 intr_throttle_timeouts; + u8 rebuild_rate; + u8 patrol_read_rate; + u8 bgi_rate; + u8 cc_rate; + u8 recon_rate; + u8 cache_flush_interval; + u8 spinup_drv_count; + u8 spinup_delay; + u8 cluster_enable; + u8 coercion_mode; + u8 alarm_enable; + u8 disable_auto_rebuild; + u8 disable_battery_warn; + u8 ecc_bucket_size; + u16 ecc_bucket_leak_rate; + u8 restore_hotspare_on_insertion; + u8 expose_encl_devices; + u8 maintainPdFailHistory; + u8 disallowHostRequestReordering; + u8 abortCCOnError; + u8 loadBalanceMode; + u8 disableAutoDetectBackplane; + + u8 snapVDSpace; + + /* + * Add properties that can be controlled by + * a bit in the following structure. + */ + struct { + u32 copyBackDisabled : 1; + u32 SMARTerEnabled : 1; + u32 prCorrectUnconfiguredAreas : 1; + u32 useFdeOnly : 1; + u32 disableNCQ : 1; + u32 SSDSMARTerEnabled : 1; + u32 SSDPatrolReadEnabled : 1; + u32 enableSpinDownUnconfigured : 1; + u32 autoEnhancedImport : 1; + u32 enableSecretKeyControl : 1; + u32 disableOnlineCtrlReset : 1; + u32 allowBootWithPinnedCache : 1; + u32 disableSpinDownHS : 1; + u32 enableJBOD : 1; + u32 reserved :18; + } OnOffProperties; + u8 autoSnapVDSpace; + u8 viewSpace; + u16 spinDownTime; + u8 reserved[24]; +} __packed; + +/* + * SAS controller information + */ +struct megasas_ctrl_info { + + /* + * PCI device information + */ + struct { + + u16 vendor_id; + u16 device_id; + u16 sub_vendor_id; + u16 sub_device_id; + u8 reserved[24]; + + } __attribute__ ((packed)) pci; + + /* + * Host interface information + */ + struct { + + u8 PCIX:1; + u8 PCIE:1; + u8 iSCSI:1; + u8 SAS_3G:1; + u8 reserved_0:4; + u8 reserved_1[6]; + u8 port_count; + u64 port_addr[8]; + + } __attribute__ ((packed)) host_interface; + + /* + * Device (backend) interface information + */ + struct { + + u8 SPI:1; + u8 SAS_3G:1; + u8 SATA_1_5G:1; + u8 SATA_3G:1; + u8 reserved_0:4; + u8 reserved_1[6]; + u8 port_count; + u64 port_addr[8]; + + } __attribute__ ((packed)) device_interface; + + /* + * List of components residing in flash. All str are null terminated + */ + u32 image_check_word; + u32 image_component_count; + + struct { + + char name[8]; + char version[32]; + char build_date[16]; + char built_time[16]; + + } __attribute__ ((packed)) image_component[8]; + + /* + * List of flash components that have been flashed on the card, but + * are not in use, pending reset of the adapter. This list will be + * empty if a flash operation has not occurred. All stings are null + * terminated + */ + u32 pending_image_component_count; + + struct { + + char name[8]; + char version[32]; + char build_date[16]; + char build_time[16]; + + } __attribute__ ((packed)) pending_image_component[8]; + + u8 max_arms; + u8 max_spans; + u8 max_arrays; + u8 max_lds; + + char product_name[80]; + char serial_no[32]; + + /* + * Other physical/controller/operation information. Indicates the + * presence of the hardware + */ + struct { + + u32 bbu:1; + u32 alarm:1; + u32 nvram:1; + u32 uart:1; + u32 reserved:28; + + } __attribute__ ((packed)) hw_present; + + u32 current_fw_time; + + /* + * Maximum data transfer sizes + */ + u16 max_concurrent_cmds; + u16 max_sge_count; + u32 max_request_size; + + /* + * Logical and physical device counts + */ + u16 ld_present_count; + u16 ld_degraded_count; + u16 ld_offline_count; + + u16 pd_present_count; + u16 pd_disk_present_count; + u16 pd_disk_pred_failure_count; + u16 pd_disk_failed_count; + + /* + * Memory size information + */ + u16 nvram_size; + u16 memory_size; + u16 flash_size; + + /* + * Error counters + */ + u16 mem_correctable_error_count; + u16 mem_uncorrectable_error_count; + + /* + * Cluster information + */ + u8 cluster_permitted; + u8 cluster_active; + + /* + * Additional max data transfer sizes + */ + u16 max_strips_per_io; + + /* + * Controller capabilities structures + */ + struct { + + u32 raid_level_0:1; + u32 raid_level_1:1; + u32 raid_level_5:1; + u32 raid_level_1E:1; + u32 raid_level_6:1; + u32 reserved:27; + + } __attribute__ ((packed)) raid_levels; + + struct { + + u32 rbld_rate:1; + u32 cc_rate:1; + u32 bgi_rate:1; + u32 recon_rate:1; + u32 patrol_rate:1; + u32 alarm_control:1; + u32 cluster_supported:1; + u32 bbu:1; + u32 spanning_allowed:1; + u32 dedicated_hotspares:1; + u32 revertible_hotspares:1; + u32 foreign_config_import:1; + u32 self_diagnostic:1; + u32 mixed_redundancy_arr:1; + u32 global_hot_spares:1; + u32 reserved:17; + + } __attribute__ ((packed)) adapter_operations; + + struct { + + u32 read_policy:1; + u32 write_policy:1; + u32 io_policy:1; + u32 access_policy:1; + u32 disk_cache_policy:1; + u32 reserved:27; + + } __attribute__ ((packed)) ld_operations; + + struct { + + u8 min; + u8 max; + u8 reserved[2]; + + } __attribute__ ((packed)) stripe_sz_ops; + + struct { + + u32 force_online:1; + u32 force_offline:1; + u32 force_rebuild:1; + u32 reserved:29; + + } __attribute__ ((packed)) pd_operations; + + struct { + + u32 ctrl_supports_sas:1; + u32 ctrl_supports_sata:1; + u32 allow_mix_in_encl:1; + u32 allow_mix_in_ld:1; + u32 allow_sata_in_cluster:1; + u32 reserved:27; + + } __attribute__ ((packed)) pd_mix_support; + + /* + * Define ECC single-bit-error bucket information + */ + u8 ecc_bucket_count; + u8 reserved_2[11]; + + /* + * Include the controller properties (changeable items) + */ + struct megasas_ctrl_prop properties; + + /* + * Define FW pkg version (set in envt v'bles on OEM basis) + */ + char package_version[0x60]; + + u8 pad[0x800 - 0x6a0]; + +} __packed; + +/* + * =============================== + * MegaRAID SAS driver definitions + * =============================== + */ +#define MEGASAS_MAX_PD_CHANNELS 2 +#define MEGASAS_MAX_LD_CHANNELS 2 +#define MEGASAS_MAX_CHANNELS (MEGASAS_MAX_PD_CHANNELS + \ + MEGASAS_MAX_LD_CHANNELS) +#define MEGASAS_MAX_DEV_PER_CHANNEL 128 +#define MEGASAS_DEFAULT_INIT_ID -1 +#define MEGASAS_MAX_LUN 8 +#define MEGASAS_MAX_LD 64 +#define MEGASAS_DEFAULT_CMD_PER_LUN 256 +#define MEGASAS_MAX_PD (MEGASAS_MAX_PD_CHANNELS * \ + MEGASAS_MAX_DEV_PER_CHANNEL) +#define MEGASAS_MAX_LD_IDS (MEGASAS_MAX_LD_CHANNELS * \ + MEGASAS_MAX_DEV_PER_CHANNEL) + +#define MEGASAS_MAX_SECTORS (2*1024) +#define MEGASAS_MAX_SECTORS_IEEE (2*128) +#define MEGASAS_DBG_LVL 1 + +#define MEGASAS_FW_BUSY 1 + +/* Frame Type */ +#define IO_FRAME 0 +#define PTHRU_FRAME 1 + +/* + * When SCSI mid-layer calls driver's reset routine, driver waits for + * MEGASAS_RESET_WAIT_TIME seconds for all outstanding IO to complete. Note + * that the driver cannot _actually_ abort or reset pending commands. While + * it is waiting for the commands to complete, it prints a diagnostic message + * every MEGASAS_RESET_NOTICE_INTERVAL seconds + */ +#define MEGASAS_RESET_WAIT_TIME 180 +#define MEGASAS_INTERNAL_CMD_WAIT_TIME 180 +#define MEGASAS_RESET_NOTICE_INTERVAL 5 +#define MEGASAS_IOCTL_CMD 0 +#define MEGASAS_DEFAULT_CMD_TIMEOUT 90 + +/* + * FW reports the maximum of number of commands that it can accept (maximum + * commands that can be outstanding) at any time. The driver must report a + * lower number to the mid layer because it can issue a few internal commands + * itself (E.g, AEN, abort cmd, IOCTLs etc). The number of commands it needs + * is shown below + */ +#define MEGASAS_INT_CMDS 32 +#define MEGASAS_SKINNY_INT_CMDS 5 + +#define MEGASAS_MAX_MSIX_QUEUES 16 +/* + * FW can accept both 32 and 64 bit SGLs. We want to allocate 32/64 bit + * SGLs based on the size of dma_addr_t + */ +#define IS_DMA64 (sizeof(dma_addr_t) == 8) + +#define MFI_XSCALE_OMR0_CHANGE_INTERRUPT 0x00000001 + +#define MFI_INTR_FLAG_REPLY_MESSAGE 0x00000001 +#define MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE 0x00000002 +#define MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT 0x00000004 + +#define MFI_OB_INTR_STATUS_MASK 0x00000002 +#define MFI_POLL_TIMEOUT_SECS 60 + +#define MFI_REPLY_1078_MESSAGE_INTERRUPT 0x80000000 +#define MFI_REPLY_GEN2_MESSAGE_INTERRUPT 0x00000001 +#define MFI_GEN2_ENABLE_INTERRUPT_MASK (0x00000001 | 0x00000004) +#define MFI_REPLY_SKINNY_MESSAGE_INTERRUPT 0x40000000 +#define MFI_SKINNY_ENABLE_INTERRUPT_MASK (0x00000001) + +#define MFI_1068_PCSR_OFFSET 0x84 +#define MFI_1068_FW_HANDSHAKE_OFFSET 0x64 +#define MFI_1068_FW_READY 0xDDDD0000 +/* +* register set for both 1068 and 1078 controllers +* structure extended for 1078 registers +*/ + +struct megasas_register_set { + u32 doorbell; /*0000h*/ + u32 fusion_seq_offset; /*0004h*/ + u32 fusion_host_diag; /*0008h*/ + u32 reserved_01; /*000Ch*/ + + u32 inbound_msg_0; /*0010h*/ + u32 inbound_msg_1; /*0014h*/ + u32 outbound_msg_0; /*0018h*/ + u32 outbound_msg_1; /*001Ch*/ + + u32 inbound_doorbell; /*0020h*/ + u32 inbound_intr_status; /*0024h*/ + u32 inbound_intr_mask; /*0028h*/ + + u32 outbound_doorbell; /*002Ch*/ + u32 outbound_intr_status; /*0030h*/ + u32 outbound_intr_mask; /*0034h*/ + + u32 reserved_1[2]; /*0038h*/ + + u32 inbound_queue_port; /*0040h*/ + u32 outbound_queue_port; /*0044h*/ + + u32 reserved_2[9]; /*0048h*/ + u32 reply_post_host_index; /*006Ch*/ + u32 reserved_2_2[12]; /*0070h*/ + + u32 outbound_doorbell_clear; /*00A0h*/ + + u32 reserved_3[3]; /*00A4h*/ + + u32 outbound_scratch_pad ; /*00B0h*/ + u32 outbound_scratch_pad_2; /*00B4h*/ + + u32 reserved_4[2]; /*00B8h*/ + + u32 inbound_low_queue_port ; /*00C0h*/ + + u32 inbound_high_queue_port ; /*00C4h*/ + + u32 reserved_5; /*00C8h*/ + u32 res_6[11]; /*CCh*/ + u32 host_diag; + u32 seq_offset; + u32 index_registers[807]; /*00CCh*/ +} __attribute__ ((packed)); + +struct megasas_sge32 { + + u32 phys_addr; + u32 length; + +} __attribute__ ((packed)); + +struct megasas_sge64 { + + u64 phys_addr; + u32 length; + +} __attribute__ ((packed)); + +struct megasas_sge_skinny { + u64 phys_addr; + u32 length; + u32 flag; +} __packed; + +union megasas_sgl { + + struct megasas_sge32 sge32[1]; + struct megasas_sge64 sge64[1]; + struct megasas_sge_skinny sge_skinny[1]; + +} __attribute__ ((packed)); + +struct megasas_header { + + u8 cmd; /*00h */ + u8 sense_len; /*01h */ + u8 cmd_status; /*02h */ + u8 scsi_status; /*03h */ + + u8 target_id; /*04h */ + u8 lun; /*05h */ + u8 cdb_len; /*06h */ + u8 sge_count; /*07h */ + + u32 context; /*08h */ + u32 pad_0; /*0Ch */ + + u16 flags; /*10h */ + u16 timeout; /*12h */ + u32 data_xferlen; /*14h */ + +} __attribute__ ((packed)); + +union megasas_sgl_frame { + + struct megasas_sge32 sge32[8]; + struct megasas_sge64 sge64[5]; + +} __attribute__ ((packed)); + +struct megasas_init_frame { + + u8 cmd; /*00h */ + u8 reserved_0; /*01h */ + u8 cmd_status; /*02h */ + + u8 reserved_1; /*03h */ + u32 reserved_2; /*04h */ + + u32 context; /*08h */ + u32 pad_0; /*0Ch */ + + u16 flags; /*10h */ + u16 reserved_3; /*12h */ + u32 data_xfer_len; /*14h */ + + u32 queue_info_new_phys_addr_lo; /*18h */ + u32 queue_info_new_phys_addr_hi; /*1Ch */ + u32 queue_info_old_phys_addr_lo; /*20h */ + u32 queue_info_old_phys_addr_hi; /*24h */ + + u32 reserved_4[6]; /*28h */ + +} __attribute__ ((packed)); + +struct megasas_init_queue_info { + + u32 init_flags; /*00h */ + u32 reply_queue_entries; /*04h */ + + u32 reply_queue_start_phys_addr_lo; /*08h */ + u32 reply_queue_start_phys_addr_hi; /*0Ch */ + u32 producer_index_phys_addr_lo; /*10h */ + u32 producer_index_phys_addr_hi; /*14h */ + u32 consumer_index_phys_addr_lo; /*18h */ + u32 consumer_index_phys_addr_hi; /*1Ch */ + +} __attribute__ ((packed)); + +struct megasas_io_frame { + + u8 cmd; /*00h */ + u8 sense_len; /*01h */ + u8 cmd_status; /*02h */ + u8 scsi_status; /*03h */ + + u8 target_id; /*04h */ + u8 access_byte; /*05h */ + u8 reserved_0; /*06h */ + u8 sge_count; /*07h */ + + u32 context; /*08h */ + u32 pad_0; /*0Ch */ + + u16 flags; /*10h */ + u16 timeout; /*12h */ + u32 lba_count; /*14h */ + + u32 sense_buf_phys_addr_lo; /*18h */ + u32 sense_buf_phys_addr_hi; /*1Ch */ + + u32 start_lba_lo; /*20h */ + u32 start_lba_hi; /*24h */ + + union megasas_sgl sgl; /*28h */ + +} __attribute__ ((packed)); + +struct megasas_pthru_frame { + + u8 cmd; /*00h */ + u8 sense_len; /*01h */ + u8 cmd_status; /*02h */ + u8 scsi_status; /*03h */ + + u8 target_id; /*04h */ + u8 lun; /*05h */ + u8 cdb_len; /*06h */ + u8 sge_count; /*07h */ + + u32 context; /*08h */ + u32 pad_0; /*0Ch */ + + u16 flags; /*10h */ + u16 timeout; /*12h */ + u32 data_xfer_len; /*14h */ + + u32 sense_buf_phys_addr_lo; /*18h */ + u32 sense_buf_phys_addr_hi; /*1Ch */ + + u8 cdb[16]; /*20h */ + union megasas_sgl sgl; /*30h */ + +} __attribute__ ((packed)); + +struct megasas_dcmd_frame { + + u8 cmd; /*00h */ + u8 reserved_0; /*01h */ + u8 cmd_status; /*02h */ + u8 reserved_1[4]; /*03h */ + u8 sge_count; /*07h */ + + u32 context; /*08h */ + u32 pad_0; /*0Ch */ + + u16 flags; /*10h */ + u16 timeout; /*12h */ + + u32 data_xfer_len; /*14h */ + u32 opcode; /*18h */ + + union { /*1Ch */ + u8 b[12]; + u16 s[6]; + u32 w[3]; + } mbox; + + union megasas_sgl sgl; /*28h */ + +} __attribute__ ((packed)); + +struct megasas_abort_frame { + + u8 cmd; /*00h */ + u8 reserved_0; /*01h */ + u8 cmd_status; /*02h */ + + u8 reserved_1; /*03h */ + u32 reserved_2; /*04h */ + + u32 context; /*08h */ + u32 pad_0; /*0Ch */ + + u16 flags; /*10h */ + u16 reserved_3; /*12h */ + u32 reserved_4; /*14h */ + + u32 abort_context; /*18h */ + u32 pad_1; /*1Ch */ + + u32 abort_mfi_phys_addr_lo; /*20h */ + u32 abort_mfi_phys_addr_hi; /*24h */ + + u32 reserved_5[6]; /*28h */ + +} __attribute__ ((packed)); + +struct megasas_smp_frame { + + u8 cmd; /*00h */ + u8 reserved_1; /*01h */ + u8 cmd_status; /*02h */ + u8 connection_status; /*03h */ + + u8 reserved_2[3]; /*04h */ + u8 sge_count; /*07h */ + + u32 context; /*08h */ + u32 pad_0; /*0Ch */ + + u16 flags; /*10h */ + u16 timeout; /*12h */ + + u32 data_xfer_len; /*14h */ + u64 sas_addr; /*18h */ + + union { + struct megasas_sge32 sge32[2]; /* [0]: resp [1]: req */ + struct megasas_sge64 sge64[2]; /* [0]: resp [1]: req */ + } sgl; + +} __attribute__ ((packed)); + +struct megasas_stp_frame { + + u8 cmd; /*00h */ + u8 reserved_1; /*01h */ + u8 cmd_status; /*02h */ + u8 reserved_2; /*03h */ + + u8 target_id; /*04h */ + u8 reserved_3[2]; /*05h */ + u8 sge_count; /*07h */ + + u32 context; /*08h */ + u32 pad_0; /*0Ch */ + + u16 flags; /*10h */ + u16 timeout; /*12h */ + + u32 data_xfer_len; /*14h */ + + u16 fis[10]; /*18h */ + u32 stp_flags; + + union { + struct megasas_sge32 sge32[2]; /* [0]: resp [1]: data */ + struct megasas_sge64 sge64[2]; /* [0]: resp [1]: data */ + } sgl; + +} __attribute__ ((packed)); + +union megasas_frame { + + struct megasas_header hdr; + struct megasas_init_frame init; + struct megasas_io_frame io; + struct megasas_pthru_frame pthru; + struct megasas_dcmd_frame dcmd; + struct megasas_abort_frame abort; + struct megasas_smp_frame smp; + struct megasas_stp_frame stp; + + u8 raw_bytes[64]; +}; + +struct megasas_cmd; + +union megasas_evt_class_locale { + + struct { + u16 locale; + u8 reserved; + s8 class; + } __attribute__ ((packed)) members; + + u32 word; + +} __attribute__ ((packed)); + +struct megasas_evt_log_info { + u32 newest_seq_num; + u32 oldest_seq_num; + u32 clear_seq_num; + u32 shutdown_seq_num; + u32 boot_seq_num; + +} __attribute__ ((packed)); + +struct megasas_progress { + + u16 progress; + u16 elapsed_seconds; + +} __attribute__ ((packed)); + +struct megasas_evtarg_ld { + + u16 target_id; + u8 ld_index; + u8 reserved; + +} __attribute__ ((packed)); + +struct megasas_evtarg_pd { + u16 device_id; + u8 encl_index; + u8 slot_number; + +} __attribute__ ((packed)); + +struct megasas_evt_detail { + + u32 seq_num; + u32 time_stamp; + u32 code; + union megasas_evt_class_locale cl; + u8 arg_type; + u8 reserved1[15]; + + union { + struct { + struct megasas_evtarg_pd pd; + u8 cdb_length; + u8 sense_length; + u8 reserved[2]; + u8 cdb[16]; + u8 sense[64]; + } __attribute__ ((packed)) cdbSense; + + struct megasas_evtarg_ld ld; + + struct { + struct megasas_evtarg_ld ld; + u64 count; + } __attribute__ ((packed)) ld_count; + + struct { + u64 lba; + struct megasas_evtarg_ld ld; + } __attribute__ ((packed)) ld_lba; + + struct { + struct megasas_evtarg_ld ld; + u32 prevOwner; + u32 newOwner; + } __attribute__ ((packed)) ld_owner; + + struct { + u64 ld_lba; + u64 pd_lba; + struct megasas_evtarg_ld ld; + struct megasas_evtarg_pd pd; + } __attribute__ ((packed)) ld_lba_pd_lba; + + struct { + struct megasas_evtarg_ld ld; + struct megasas_progress prog; + } __attribute__ ((packed)) ld_prog; + + struct { + struct megasas_evtarg_ld ld; + u32 prev_state; + u32 new_state; + } __attribute__ ((packed)) ld_state; + + struct { + u64 strip; + struct megasas_evtarg_ld ld; + } __attribute__ ((packed)) ld_strip; + + struct megasas_evtarg_pd pd; + + struct { + struct megasas_evtarg_pd pd; + u32 err; + } __attribute__ ((packed)) pd_err; + + struct { + u64 lba; + struct megasas_evtarg_pd pd; + } __attribute__ ((packed)) pd_lba; + + struct { + u64 lba; + struct megasas_evtarg_pd pd; + struct megasas_evtarg_ld ld; + } __attribute__ ((packed)) pd_lba_ld; + + struct { + struct megasas_evtarg_pd pd; + struct megasas_progress prog; + } __attribute__ ((packed)) pd_prog; + + struct { + struct megasas_evtarg_pd pd; + u32 prevState; + u32 newState; + } __attribute__ ((packed)) pd_state; + + struct { + u16 vendorId; + u16 deviceId; + u16 subVendorId; + u16 subDeviceId; + } __attribute__ ((packed)) pci; + + u32 rate; + char str[96]; + + struct { + u32 rtc; + u32 elapsedSeconds; + } __attribute__ ((packed)) time; + + struct { + u32 ecar; + u32 elog; + char str[64]; + } __attribute__ ((packed)) ecc; + + u8 b[96]; + u16 s[48]; + u32 w[24]; + u64 d[12]; + } args; + + char description[128]; + +} __attribute__ ((packed)); + +struct megasas_aen_event { + struct work_struct hotplug_work; + struct megasas_instance *instance; +}; + +struct megasas_irq_context { + struct megasas_instance *instance; + u32 MSIxIndex; +}; + +struct megasas_instance { + + u32 *producer; + dma_addr_t producer_h; + u32 *consumer; + dma_addr_t consumer_h; + + u32 *reply_queue; + dma_addr_t reply_queue_h; + + unsigned long base_addr; + struct megasas_register_set __iomem *reg_set; + + struct megasas_pd_list pd_list[MEGASAS_MAX_PD]; + u8 ld_ids[MEGASAS_MAX_LD_IDS]; + s8 init_id; + + u16 max_num_sge; + u16 max_fw_cmds; + /* For Fusion its num IOCTL cmds, for others MFI based its + max_fw_cmds */ + u16 max_mfi_cmds; + u32 max_sectors_per_req; + struct megasas_aen_event *ev; + + struct megasas_cmd **cmd_list; + struct list_head cmd_pool; + /* used to sync fire the cmd to fw */ + spinlock_t cmd_pool_lock; + /* used to sync fire the cmd to fw */ + spinlock_t hba_lock; + /* used to synch producer, consumer ptrs in dpc */ + spinlock_t completion_lock; + struct dma_pool *frame_dma_pool; + struct dma_pool *sense_dma_pool; + + struct megasas_evt_detail *evt_detail; + dma_addr_t evt_detail_h; + struct megasas_cmd *aen_cmd; + struct mutex aen_mutex; + struct semaphore ioctl_sem; + + struct Scsi_Host *host; + + wait_queue_head_t int_cmd_wait_q; + wait_queue_head_t abort_cmd_wait_q; + + struct pci_dev *pdev; + u32 unique_id; + u32 fw_support_ieee; + + atomic_t fw_outstanding; + atomic_t fw_reset_no_pci_access; + + struct megasas_instance_template *instancet; + struct tasklet_struct isr_tasklet; + struct work_struct work_init; + + u8 flag; + u8 unload; + u8 flag_ieee; + u8 issuepend_done; + u8 disableOnlineCtrlReset; + u8 adprecovery; + unsigned long last_time; + u32 mfiStatus; + u32 last_seq_num; + + struct list_head internal_reset_pending_q; + + /* Ptr to hba specific information */ + void *ctrl_context; + unsigned int msix_vectors; + struct msix_entry msixentry[MEGASAS_MAX_MSIX_QUEUES]; + struct megasas_irq_context irq_context[MEGASAS_MAX_MSIX_QUEUES]; + u64 map_id; + struct megasas_cmd *map_update_cmd; + unsigned long bar; + long reset_flags; + struct mutex reset_mutex; +}; + +enum { + MEGASAS_HBA_OPERATIONAL = 0, + MEGASAS_ADPRESET_SM_INFAULT = 1, + MEGASAS_ADPRESET_SM_FW_RESET_SUCCESS = 2, + MEGASAS_ADPRESET_SM_OPERATIONAL = 3, + MEGASAS_HW_CRITICAL_ERROR = 4, + MEGASAS_ADPRESET_INPROG_SIGN = 0xDEADDEAD, +}; + +struct megasas_instance_template { + void (*fire_cmd)(struct megasas_instance *, dma_addr_t, \ + u32, struct megasas_register_set __iomem *); + + void (*enable_intr)(struct megasas_register_set __iomem *) ; + void (*disable_intr)(struct megasas_register_set __iomem *); + + int (*clear_intr)(struct megasas_register_set __iomem *); + + u32 (*read_fw_status_reg)(struct megasas_register_set __iomem *); + int (*adp_reset)(struct megasas_instance *, \ + struct megasas_register_set __iomem *); + int (*check_reset)(struct megasas_instance *, \ + struct megasas_register_set __iomem *); + irqreturn_t (*service_isr)(int irq, void *devp); + void (*tasklet)(unsigned long); + u32 (*init_adapter)(struct megasas_instance *); + u32 (*build_and_issue_cmd) (struct megasas_instance *, + struct scsi_cmnd *); + void (*issue_dcmd) (struct megasas_instance *instance, + struct megasas_cmd *cmd); +}; + +#define MEGASAS_IS_LOGICAL(scp) \ + (scp->device->channel < MEGASAS_MAX_PD_CHANNELS) ? 0 : 1 + +#define MEGASAS_DEV_INDEX(inst, scp) \ + ((scp->device->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) + \ + scp->device->id + +struct megasas_cmd { + + union megasas_frame *frame; + dma_addr_t frame_phys_addr; + u8 *sense; + dma_addr_t sense_phys_addr; + + u32 index; + u8 sync_cmd; + u8 cmd_status; + u8 abort_aen; + u8 retry_for_fw_reset; + + + struct list_head list; + struct scsi_cmnd *scmd; + struct megasas_instance *instance; + union { + struct { + u16 smid; + u16 resvd; + } context; + u32 frame_count; + }; +}; + +#define MAX_MGMT_ADAPTERS 1024 +#define MAX_IOCTL_SGE 16 + +struct megasas_iocpacket { + + u16 host_no; + u16 __pad1; + u32 sgl_off; + u32 sge_count; + u32 sense_off; + u32 sense_len; + union { + u8 raw[128]; + struct megasas_header hdr; + } frame; + + struct iovec sgl[MAX_IOCTL_SGE]; + +} __attribute__ ((packed)); + +struct megasas_aen { + u16 host_no; + u16 __pad1; + u32 seq_num; + u32 class_locale_word; +} __attribute__ ((packed)); + +#ifdef CONFIG_COMPAT +struct compat_megasas_iocpacket { + u16 host_no; + u16 __pad1; + u32 sgl_off; + u32 sge_count; + u32 sense_off; + u32 sense_len; + union { + u8 raw[128]; + struct megasas_header hdr; + } frame; + struct compat_iovec sgl[MAX_IOCTL_SGE]; +} __attribute__ ((packed)); + +#define MEGASAS_IOC_FIRMWARE32 _IOWR('M', 1, struct compat_megasas_iocpacket) +#endif + +#define MEGASAS_IOC_FIRMWARE _IOWR('M', 1, struct megasas_iocpacket) +#define MEGASAS_IOC_GET_AEN _IOW('M', 3, struct megasas_aen) + +struct megasas_mgmt_info { + + u16 count; + struct megasas_instance *instance[MAX_MGMT_ADAPTERS]; + int max_index; +}; + +#define msi_control_reg(base) (base + PCI_MSI_FLAGS) +#define PCI_MSIX_FLAGS_ENABLE (1 << 15) + +#endif /*LSI_MEGARAID_SAS_H */ diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c new file mode 100644 index 00000000..8b300be4 --- /dev/null +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -0,0 +1,5487 @@ +/* + * Linux MegaRAID driver for SAS based RAID controllers + * + * Copyright (c) 2009-2011 LSI Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * FILE: megaraid_sas_base.c + * Version : v00.00.06.14-rc1 + * + * Authors: LSI Corporation + * Sreenivas Bagalkote + * Sumant Patro + * Bo Yang + * Adam Radford <linuxraid@lsi.com> + * + * Send feedback to: <megaraidlinux@lsi.com> + * + * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 + * ATTN: Linuxraid + */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/list.h> +#include <linux/moduleparam.h> +#include <linux/module.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/uio.h> +#include <linux/slab.h> +#include <asm/uaccess.h> +#include <linux/fs.h> +#include <linux/compat.h> +#include <linux/blkdev.h> +#include <linux/mutex.h> +#include <linux/poll.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_tcq.h> +#include "megaraid_sas_fusion.h" +#include "megaraid_sas.h" + +/* + * Number of sectors per IO command + * Will be set in megasas_init_mfi if user does not provide + */ +static unsigned int max_sectors; +module_param_named(max_sectors, max_sectors, int, 0); +MODULE_PARM_DESC(max_sectors, + "Maximum number of sectors per IO command"); + +static int msix_disable; +module_param(msix_disable, int, S_IRUGO); +MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0"); + +MODULE_LICENSE("GPL"); +MODULE_VERSION(MEGASAS_VERSION); +MODULE_AUTHOR("megaraidlinux@lsi.com"); +MODULE_DESCRIPTION("LSI MegaRAID SAS Driver"); + +int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); +static int megasas_get_pd_list(struct megasas_instance *instance); +static int megasas_issue_init_mfi(struct megasas_instance *instance); +static int megasas_register_aen(struct megasas_instance *instance, + u32 seq_num, u32 class_locale_word); +/* + * PCI ID table for all supported controllers + */ +static struct pci_device_id megasas_pci_table[] = { + + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, + /* xscale IOP */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, + /* ppc IOP */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, + /* ppc IOP */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, + /* gen2*/ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, + /* gen2*/ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, + /* skinny*/ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, + /* skinny*/ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, + /* xscale IOP, vega */ + {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, + /* xscale IOP */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)}, + /* Fusion */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)}, + /* Invader */ + {} +}; + +MODULE_DEVICE_TABLE(pci, megasas_pci_table); + +static int megasas_mgmt_majorno; +static struct megasas_mgmt_info megasas_mgmt_info; +static struct fasync_struct *megasas_async_queue; +static DEFINE_MUTEX(megasas_async_queue_mutex); + +static int megasas_poll_wait_aen; +static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); +static u32 support_poll_for_event; +u32 megasas_dbg_lvl; +static u32 support_device_change; + +/* define lock for aen poll */ +spinlock_t poll_aen_lock; + +void +megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, + u8 alt_status); +static u32 +megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs); +static int +megasas_adp_reset_gen2(struct megasas_instance *instance, + struct megasas_register_set __iomem *reg_set); +static irqreturn_t megasas_isr(int irq, void *devp); +static u32 +megasas_init_adapter_mfi(struct megasas_instance *instance); +u32 +megasas_build_and_issue_cmd(struct megasas_instance *instance, + struct scsi_cmnd *scmd); +static void megasas_complete_cmd_dpc(unsigned long instance_addr); +void +megasas_release_fusion(struct megasas_instance *instance); +int +megasas_ioc_init_fusion(struct megasas_instance *instance); +void +megasas_free_cmds_fusion(struct megasas_instance *instance); +u8 +megasas_get_map_info(struct megasas_instance *instance); +int +megasas_sync_map_info(struct megasas_instance *instance); +int +wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd); +void megasas_reset_reply_desc(struct megasas_instance *instance); +u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map, + struct LD_LOAD_BALANCE_INFO *lbInfo); +int megasas_reset_fusion(struct Scsi_Host *shost); +void megasas_fusion_ocr_wq(struct work_struct *work); + +void +megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd) +{ + instance->instancet->fire_cmd(instance, + cmd->frame_phys_addr, 0, instance->reg_set); +} + +/** + * megasas_get_cmd - Get a command from the free pool + * @instance: Adapter soft state + * + * Returns a free command from the pool + */ +struct megasas_cmd *megasas_get_cmd(struct megasas_instance + *instance) +{ + unsigned long flags; + struct megasas_cmd *cmd = NULL; + + spin_lock_irqsave(&instance->cmd_pool_lock, flags); + + if (!list_empty(&instance->cmd_pool)) { + cmd = list_entry((&instance->cmd_pool)->next, + struct megasas_cmd, list); + list_del_init(&cmd->list); + } else { + printk(KERN_ERR "megasas: Command pool empty!\n"); + } + + spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); + return cmd; +} + +/** + * megasas_return_cmd - Return a cmd to free command pool + * @instance: Adapter soft state + * @cmd: Command packet to be returned to free command pool + */ +inline void +megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) +{ + unsigned long flags; + + spin_lock_irqsave(&instance->cmd_pool_lock, flags); + + cmd->scmd = NULL; + cmd->frame_count = 0; + if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && + (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && + (reset_devices)) + cmd->frame->hdr.cmd = MFI_CMD_INVALID; + list_add_tail(&cmd->list, &instance->cmd_pool); + + spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); +} + + +/** +* The following functions are defined for xscale +* (deviceid : 1064R, PERC5) controllers +*/ + +/** + * megasas_enable_intr_xscale - Enables interrupts + * @regs: MFI register set + */ +static inline void +megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs) +{ + writel(0, &(regs)->outbound_intr_mask); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_disable_intr_xscale -Disables interrupt + * @regs: MFI register set + */ +static inline void +megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs) +{ + u32 mask = 0x1f; + writel(mask, ®s->outbound_intr_mask); + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_read_fw_status_reg_xscale - returns the current FW status value + * @regs: MFI register set + */ +static u32 +megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs) +{ + return readl(&(regs)->outbound_msg_0); +} +/** + * megasas_clear_interrupt_xscale - Check & clear interrupt + * @regs: MFI register set + */ +static int +megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) +{ + u32 status; + u32 mfiStatus = 0; + /* + * Check if it is our interrupt + */ + status = readl(®s->outbound_intr_status); + + if (status & MFI_OB_INTR_STATUS_MASK) + mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; + if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT) + mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; + + /* + * Clear the interrupt by writing back the same value + */ + if (mfiStatus) + writel(status, ®s->outbound_intr_status); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_status); + + return mfiStatus; +} + +/** + * megasas_fire_cmd_xscale - Sends command to the FW + * @frame_phys_addr : Physical address of cmd + * @frame_count : Number of frames for the command + * @regs : MFI register set + */ +static inline void +megasas_fire_cmd_xscale(struct megasas_instance *instance, + dma_addr_t frame_phys_addr, + u32 frame_count, + struct megasas_register_set __iomem *regs) +{ + unsigned long flags; + spin_lock_irqsave(&instance->hba_lock, flags); + writel((frame_phys_addr >> 3)|(frame_count), + &(regs)->inbound_queue_port); + spin_unlock_irqrestore(&instance->hba_lock, flags); +} + +/** + * megasas_adp_reset_xscale - For controller reset + * @regs: MFI register set + */ +static int +megasas_adp_reset_xscale(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + u32 i; + u32 pcidata; + writel(MFI_ADP_RESET, ®s->inbound_doorbell); + + for (i = 0; i < 3; i++) + msleep(1000); /* sleep for 3 secs */ + pcidata = 0; + pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata); + printk(KERN_NOTICE "pcidata = %x\n", pcidata); + if (pcidata & 0x2) { + printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata); + pcidata &= ~0x2; + pci_write_config_dword(instance->pdev, + MFI_1068_PCSR_OFFSET, pcidata); + + for (i = 0; i < 2; i++) + msleep(1000); /* need to wait 2 secs again */ + + pcidata = 0; + pci_read_config_dword(instance->pdev, + MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata); + printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata); + if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) { + printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata); + pcidata = 0; + pci_write_config_dword(instance->pdev, + MFI_1068_FW_HANDSHAKE_OFFSET, pcidata); + } + } + return 0; +} + +/** + * megasas_check_reset_xscale - For controller reset check + * @regs: MFI register set + */ +static int +megasas_check_reset_xscale(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + u32 consumer; + consumer = *instance->consumer; + + if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) && + (*instance->consumer == MEGASAS_ADPRESET_INPROG_SIGN)) { + return 1; + } + return 0; +} + +static struct megasas_instance_template megasas_instance_template_xscale = { + + .fire_cmd = megasas_fire_cmd_xscale, + .enable_intr = megasas_enable_intr_xscale, + .disable_intr = megasas_disable_intr_xscale, + .clear_intr = megasas_clear_intr_xscale, + .read_fw_status_reg = megasas_read_fw_status_reg_xscale, + .adp_reset = megasas_adp_reset_xscale, + .check_reset = megasas_check_reset_xscale, + .service_isr = megasas_isr, + .tasklet = megasas_complete_cmd_dpc, + .init_adapter = megasas_init_adapter_mfi, + .build_and_issue_cmd = megasas_build_and_issue_cmd, + .issue_dcmd = megasas_issue_dcmd, +}; + +/** +* This is the end of set of functions & definitions specific +* to xscale (deviceid : 1064R, PERC5) controllers +*/ + +/** +* The following functions are defined for ppc (deviceid : 0x60) +* controllers +*/ + +/** + * megasas_enable_intr_ppc - Enables interrupts + * @regs: MFI register set + */ +static inline void +megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs) +{ + writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); + + writel(~0x80000000, &(regs)->outbound_intr_mask); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_disable_intr_ppc - Disable interrupt + * @regs: MFI register set + */ +static inline void +megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs) +{ + u32 mask = 0xFFFFFFFF; + writel(mask, ®s->outbound_intr_mask); + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_read_fw_status_reg_ppc - returns the current FW status value + * @regs: MFI register set + */ +static u32 +megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs) +{ + return readl(&(regs)->outbound_scratch_pad); +} + +/** + * megasas_clear_interrupt_ppc - Check & clear interrupt + * @regs: MFI register set + */ +static int +megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) +{ + u32 status, mfiStatus = 0; + + /* + * Check if it is our interrupt + */ + status = readl(®s->outbound_intr_status); + + if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT) + mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; + + if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) + mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; + + /* + * Clear the interrupt by writing back the same value + */ + writel(status, ®s->outbound_doorbell_clear); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_doorbell_clear); + + return mfiStatus; +} + +/** + * megasas_fire_cmd_ppc - Sends command to the FW + * @frame_phys_addr : Physical address of cmd + * @frame_count : Number of frames for the command + * @regs : MFI register set + */ +static inline void +megasas_fire_cmd_ppc(struct megasas_instance *instance, + dma_addr_t frame_phys_addr, + u32 frame_count, + struct megasas_register_set __iomem *regs) +{ + unsigned long flags; + spin_lock_irqsave(&instance->hba_lock, flags); + writel((frame_phys_addr | (frame_count<<1))|1, + &(regs)->inbound_queue_port); + spin_unlock_irqrestore(&instance->hba_lock, flags); +} + +/** + * megasas_check_reset_ppc - For controller reset check + * @regs: MFI register set + */ +static int +megasas_check_reset_ppc(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) + return 1; + + return 0; +} + +static struct megasas_instance_template megasas_instance_template_ppc = { + + .fire_cmd = megasas_fire_cmd_ppc, + .enable_intr = megasas_enable_intr_ppc, + .disable_intr = megasas_disable_intr_ppc, + .clear_intr = megasas_clear_intr_ppc, + .read_fw_status_reg = megasas_read_fw_status_reg_ppc, + .adp_reset = megasas_adp_reset_xscale, + .check_reset = megasas_check_reset_ppc, + .service_isr = megasas_isr, + .tasklet = megasas_complete_cmd_dpc, + .init_adapter = megasas_init_adapter_mfi, + .build_and_issue_cmd = megasas_build_and_issue_cmd, + .issue_dcmd = megasas_issue_dcmd, +}; + +/** + * megasas_enable_intr_skinny - Enables interrupts + * @regs: MFI register set + */ +static inline void +megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs) +{ + writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); + + writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_disable_intr_skinny - Disables interrupt + * @regs: MFI register set + */ +static inline void +megasas_disable_intr_skinny(struct megasas_register_set __iomem *regs) +{ + u32 mask = 0xFFFFFFFF; + writel(mask, ®s->outbound_intr_mask); + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_read_fw_status_reg_skinny - returns the current FW status value + * @regs: MFI register set + */ +static u32 +megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs) +{ + return readl(&(regs)->outbound_scratch_pad); +} + +/** + * megasas_clear_interrupt_skinny - Check & clear interrupt + * @regs: MFI register set + */ +static int +megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs) +{ + u32 status; + u32 mfiStatus = 0; + + /* + * Check if it is our interrupt + */ + status = readl(®s->outbound_intr_status); + + if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { + return 0; + } + + /* + * Check if it is our interrupt + */ + if ((megasas_read_fw_status_reg_gen2(regs) & MFI_STATE_MASK) == + MFI_STATE_FAULT) { + mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; + } else + mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; + + /* + * Clear the interrupt by writing back the same value + */ + writel(status, ®s->outbound_intr_status); + + /* + * dummy read to flush PCI + */ + readl(®s->outbound_intr_status); + + return mfiStatus; +} + +/** + * megasas_fire_cmd_skinny - Sends command to the FW + * @frame_phys_addr : Physical address of cmd + * @frame_count : Number of frames for the command + * @regs : MFI register set + */ +static inline void +megasas_fire_cmd_skinny(struct megasas_instance *instance, + dma_addr_t frame_phys_addr, + u32 frame_count, + struct megasas_register_set __iomem *regs) +{ + unsigned long flags; + spin_lock_irqsave(&instance->hba_lock, flags); + writel(0, &(regs)->inbound_high_queue_port); + writel((frame_phys_addr | (frame_count<<1))|1, + &(regs)->inbound_low_queue_port); + spin_unlock_irqrestore(&instance->hba_lock, flags); +} + +/** + * megasas_check_reset_skinny - For controller reset check + * @regs: MFI register set + */ +static int +megasas_check_reset_skinny(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) + return 1; + + return 0; +} + +static struct megasas_instance_template megasas_instance_template_skinny = { + + .fire_cmd = megasas_fire_cmd_skinny, + .enable_intr = megasas_enable_intr_skinny, + .disable_intr = megasas_disable_intr_skinny, + .clear_intr = megasas_clear_intr_skinny, + .read_fw_status_reg = megasas_read_fw_status_reg_skinny, + .adp_reset = megasas_adp_reset_gen2, + .check_reset = megasas_check_reset_skinny, + .service_isr = megasas_isr, + .tasklet = megasas_complete_cmd_dpc, + .init_adapter = megasas_init_adapter_mfi, + .build_and_issue_cmd = megasas_build_and_issue_cmd, + .issue_dcmd = megasas_issue_dcmd, +}; + + +/** +* The following functions are defined for gen2 (deviceid : 0x78 0x79) +* controllers +*/ + +/** + * megasas_enable_intr_gen2 - Enables interrupts + * @regs: MFI register set + */ +static inline void +megasas_enable_intr_gen2(struct megasas_register_set __iomem *regs) +{ + writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); + + /* write ~0x00000005 (4 & 1) to the intr mask*/ + writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_disable_intr_gen2 - Disables interrupt + * @regs: MFI register set + */ +static inline void +megasas_disable_intr_gen2(struct megasas_register_set __iomem *regs) +{ + u32 mask = 0xFFFFFFFF; + writel(mask, ®s->outbound_intr_mask); + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_read_fw_status_reg_gen2 - returns the current FW status value + * @regs: MFI register set + */ +static u32 +megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs) +{ + return readl(&(regs)->outbound_scratch_pad); +} + +/** + * megasas_clear_interrupt_gen2 - Check & clear interrupt + * @regs: MFI register set + */ +static int +megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs) +{ + u32 status; + u32 mfiStatus = 0; + /* + * Check if it is our interrupt + */ + status = readl(®s->outbound_intr_status); + + if (status & MFI_GEN2_ENABLE_INTERRUPT_MASK) { + mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; + } + if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) { + mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; + } + + /* + * Clear the interrupt by writing back the same value + */ + if (mfiStatus) + writel(status, ®s->outbound_doorbell_clear); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_status); + + return mfiStatus; +} +/** + * megasas_fire_cmd_gen2 - Sends command to the FW + * @frame_phys_addr : Physical address of cmd + * @frame_count : Number of frames for the command + * @regs : MFI register set + */ +static inline void +megasas_fire_cmd_gen2(struct megasas_instance *instance, + dma_addr_t frame_phys_addr, + u32 frame_count, + struct megasas_register_set __iomem *regs) +{ + unsigned long flags; + spin_lock_irqsave(&instance->hba_lock, flags); + writel((frame_phys_addr | (frame_count<<1))|1, + &(regs)->inbound_queue_port); + spin_unlock_irqrestore(&instance->hba_lock, flags); +} + +/** + * megasas_adp_reset_gen2 - For controller reset + * @regs: MFI register set + */ +static int +megasas_adp_reset_gen2(struct megasas_instance *instance, + struct megasas_register_set __iomem *reg_set) +{ + u32 retry = 0 ; + u32 HostDiag; + u32 *seq_offset = ®_set->seq_offset; + u32 *hostdiag_offset = ®_set->host_diag; + + if (instance->instancet == &megasas_instance_template_skinny) { + seq_offset = ®_set->fusion_seq_offset; + hostdiag_offset = ®_set->fusion_host_diag; + } + + writel(0, seq_offset); + writel(4, seq_offset); + writel(0xb, seq_offset); + writel(2, seq_offset); + writel(7, seq_offset); + writel(0xd, seq_offset); + + msleep(1000); + + HostDiag = (u32)readl(hostdiag_offset); + + while ( !( HostDiag & DIAG_WRITE_ENABLE) ) { + msleep(100); + HostDiag = (u32)readl(hostdiag_offset); + printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n", + retry, HostDiag); + + if (retry++ >= 100) + return 1; + + } + + printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag); + + writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset); + + ssleep(10); + + HostDiag = (u32)readl(hostdiag_offset); + while ( ( HostDiag & DIAG_RESET_ADAPTER) ) { + msleep(100); + HostDiag = (u32)readl(hostdiag_offset); + printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n", + retry, HostDiag); + + if (retry++ >= 1000) + return 1; + + } + return 0; +} + +/** + * megasas_check_reset_gen2 - For controller reset check + * @regs: MFI register set + */ +static int +megasas_check_reset_gen2(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { + return 1; + } + + return 0; +} + +static struct megasas_instance_template megasas_instance_template_gen2 = { + + .fire_cmd = megasas_fire_cmd_gen2, + .enable_intr = megasas_enable_intr_gen2, + .disable_intr = megasas_disable_intr_gen2, + .clear_intr = megasas_clear_intr_gen2, + .read_fw_status_reg = megasas_read_fw_status_reg_gen2, + .adp_reset = megasas_adp_reset_gen2, + .check_reset = megasas_check_reset_gen2, + .service_isr = megasas_isr, + .tasklet = megasas_complete_cmd_dpc, + .init_adapter = megasas_init_adapter_mfi, + .build_and_issue_cmd = megasas_build_and_issue_cmd, + .issue_dcmd = megasas_issue_dcmd, +}; + +/** +* This is the end of set of functions & definitions +* specific to gen2 (deviceid : 0x78, 0x79) controllers +*/ + +/* + * Template added for TB (Fusion) + */ +extern struct megasas_instance_template megasas_instance_template_fusion; + +/** + * megasas_issue_polled - Issues a polling command + * @instance: Adapter soft state + * @cmd: Command packet to be issued + * + * For polling, MFI requires the cmd_status to be set to 0xFF before posting. + */ +int +megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) +{ + + struct megasas_header *frame_hdr = &cmd->frame->hdr; + + frame_hdr->cmd_status = 0xFF; + frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE; + + /* + * Issue the frame using inbound queue port + */ + instance->instancet->issue_dcmd(instance, cmd); + + /* + * Wait for cmd_status to change + */ + return wait_and_poll(instance, cmd); +} + +/** + * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds + * @instance: Adapter soft state + * @cmd: Command to be issued + * + * This function waits on an event for the command to be returned from ISR. + * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs + * Used to issue ioctl commands. + */ +static int +megasas_issue_blocked_cmd(struct megasas_instance *instance, + struct megasas_cmd *cmd) +{ + cmd->cmd_status = ENODATA; + + instance->instancet->issue_dcmd(instance, cmd); + + wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA); + + return 0; +} + +/** + * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd + * @instance: Adapter soft state + * @cmd_to_abort: Previously issued cmd to be aborted + * + * MFI firmware can abort previously issued AEN command (automatic event + * notification). The megasas_issue_blocked_abort_cmd() issues such abort + * cmd and waits for return status. + * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs + */ +static int +megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, + struct megasas_cmd *cmd_to_abort) +{ + struct megasas_cmd *cmd; + struct megasas_abort_frame *abort_fr; + + cmd = megasas_get_cmd(instance); + + if (!cmd) + return -1; + + abort_fr = &cmd->frame->abort; + + /* + * Prepare and issue the abort frame + */ + abort_fr->cmd = MFI_CMD_ABORT; + abort_fr->cmd_status = 0xFF; + abort_fr->flags = 0; + abort_fr->abort_context = cmd_to_abort->index; + abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr; + abort_fr->abort_mfi_phys_addr_hi = 0; + + cmd->sync_cmd = 1; + cmd->cmd_status = 0xFF; + + instance->instancet->issue_dcmd(instance, cmd); + + /* + * Wait for this cmd to complete + */ + wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF); + cmd->sync_cmd = 0; + + megasas_return_cmd(instance, cmd); + return 0; +} + +/** + * megasas_make_sgl32 - Prepares 32-bit SGL + * @instance: Adapter soft state + * @scp: SCSI command from the mid-layer + * @mfi_sgl: SGL to be filled in + * + * If successful, this function returns the number of SG elements. Otherwise, + * it returnes -1. + */ +static int +megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, + union megasas_sgl *mfi_sgl) +{ + int i; + int sge_count; + struct scatterlist *os_sgl; + + sge_count = scsi_dma_map(scp); + BUG_ON(sge_count < 0); + + if (sge_count) { + scsi_for_each_sg(scp, os_sgl, sge_count, i) { + mfi_sgl->sge32[i].length = sg_dma_len(os_sgl); + mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl); + } + } + return sge_count; +} + +/** + * megasas_make_sgl64 - Prepares 64-bit SGL + * @instance: Adapter soft state + * @scp: SCSI command from the mid-layer + * @mfi_sgl: SGL to be filled in + * + * If successful, this function returns the number of SG elements. Otherwise, + * it returnes -1. + */ +static int +megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, + union megasas_sgl *mfi_sgl) +{ + int i; + int sge_count; + struct scatterlist *os_sgl; + + sge_count = scsi_dma_map(scp); + BUG_ON(sge_count < 0); + + if (sge_count) { + scsi_for_each_sg(scp, os_sgl, sge_count, i) { + mfi_sgl->sge64[i].length = sg_dma_len(os_sgl); + mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl); + } + } + return sge_count; +} + +/** + * megasas_make_sgl_skinny - Prepares IEEE SGL + * @instance: Adapter soft state + * @scp: SCSI command from the mid-layer + * @mfi_sgl: SGL to be filled in + * + * If successful, this function returns the number of SG elements. Otherwise, + * it returnes -1. + */ +static int +megasas_make_sgl_skinny(struct megasas_instance *instance, + struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) +{ + int i; + int sge_count; + struct scatterlist *os_sgl; + + sge_count = scsi_dma_map(scp); + + if (sge_count) { + scsi_for_each_sg(scp, os_sgl, sge_count, i) { + mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl); + mfi_sgl->sge_skinny[i].phys_addr = + sg_dma_address(os_sgl); + mfi_sgl->sge_skinny[i].flag = 0; + } + } + return sge_count; +} + + /** + * megasas_get_frame_count - Computes the number of frames + * @frame_type : type of frame- io or pthru frame + * @sge_count : number of sg elements + * + * Returns the number of frames required for numnber of sge's (sge_count) + */ + +static u32 megasas_get_frame_count(struct megasas_instance *instance, + u8 sge_count, u8 frame_type) +{ + int num_cnt; + int sge_bytes; + u32 sge_sz; + u32 frame_count=0; + + sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : + sizeof(struct megasas_sge32); + + if (instance->flag_ieee) { + sge_sz = sizeof(struct megasas_sge_skinny); + } + + /* + * Main frame can contain 2 SGEs for 64-bit SGLs and + * 3 SGEs for 32-bit SGLs for ldio & + * 1 SGEs for 64-bit SGLs and + * 2 SGEs for 32-bit SGLs for pthru frame + */ + if (unlikely(frame_type == PTHRU_FRAME)) { + if (instance->flag_ieee == 1) { + num_cnt = sge_count - 1; + } else if (IS_DMA64) + num_cnt = sge_count - 1; + else + num_cnt = sge_count - 2; + } else { + if (instance->flag_ieee == 1) { + num_cnt = sge_count - 1; + } else if (IS_DMA64) + num_cnt = sge_count - 2; + else + num_cnt = sge_count - 3; + } + + if(num_cnt>0){ + sge_bytes = sge_sz * num_cnt; + + frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + + ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; + } + /* Main frame */ + frame_count +=1; + + if (frame_count > 7) + frame_count = 8; + return frame_count; +} + +/** + * megasas_build_dcdb - Prepares a direct cdb (DCDB) command + * @instance: Adapter soft state + * @scp: SCSI command + * @cmd: Command to be prepared in + * + * This function prepares CDB commands. These are typcially pass-through + * commands to the devices. + */ +static int +megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, + struct megasas_cmd *cmd) +{ + u32 is_logical; + u32 device_id; + u16 flags = 0; + struct megasas_pthru_frame *pthru; + + is_logical = MEGASAS_IS_LOGICAL(scp); + device_id = MEGASAS_DEV_INDEX(instance, scp); + pthru = (struct megasas_pthru_frame *)cmd->frame; + + if (scp->sc_data_direction == PCI_DMA_TODEVICE) + flags = MFI_FRAME_DIR_WRITE; + else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) + flags = MFI_FRAME_DIR_READ; + else if (scp->sc_data_direction == PCI_DMA_NONE) + flags = MFI_FRAME_DIR_NONE; + + if (instance->flag_ieee == 1) { + flags |= MFI_FRAME_IEEE; + } + + /* + * Prepare the DCDB frame + */ + pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; + pthru->cmd_status = 0x0; + pthru->scsi_status = 0x0; + pthru->target_id = device_id; + pthru->lun = scp->device->lun; + pthru->cdb_len = scp->cmd_len; + pthru->timeout = 0; + pthru->pad_0 = 0; + pthru->flags = flags; + pthru->data_xfer_len = scsi_bufflen(scp); + + memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); + + /* + * If the command is for the tape device, set the + * pthru timeout to the os layer timeout value. + */ + if (scp->device->type == TYPE_TAPE) { + if ((scp->request->timeout / HZ) > 0xFFFF) + pthru->timeout = 0xFFFF; + else + pthru->timeout = scp->request->timeout / HZ; + } + + /* + * Construct SGL + */ + if (instance->flag_ieee == 1) { + pthru->flags |= MFI_FRAME_SGL64; + pthru->sge_count = megasas_make_sgl_skinny(instance, scp, + &pthru->sgl); + } else if (IS_DMA64) { + pthru->flags |= MFI_FRAME_SGL64; + pthru->sge_count = megasas_make_sgl64(instance, scp, + &pthru->sgl); + } else + pthru->sge_count = megasas_make_sgl32(instance, scp, + &pthru->sgl); + + if (pthru->sge_count > instance->max_num_sge) { + printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n", + pthru->sge_count); + return 0; + } + + /* + * Sense info specific + */ + pthru->sense_len = SCSI_SENSE_BUFFERSIZE; + pthru->sense_buf_phys_addr_hi = 0; + pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr; + + /* + * Compute the total number of frames this command consumes. FW uses + * this number to pull sufficient number of frames from host memory. + */ + cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, + PTHRU_FRAME); + + return cmd->frame_count; +} + +/** + * megasas_build_ldio - Prepares IOs to logical devices + * @instance: Adapter soft state + * @scp: SCSI command + * @cmd: Command to be prepared + * + * Frames (and accompanying SGLs) for regular SCSI IOs use this function. + */ +static int +megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, + struct megasas_cmd *cmd) +{ + u32 device_id; + u8 sc = scp->cmnd[0]; + u16 flags = 0; + struct megasas_io_frame *ldio; + + device_id = MEGASAS_DEV_INDEX(instance, scp); + ldio = (struct megasas_io_frame *)cmd->frame; + + if (scp->sc_data_direction == PCI_DMA_TODEVICE) + flags = MFI_FRAME_DIR_WRITE; + else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) + flags = MFI_FRAME_DIR_READ; + + if (instance->flag_ieee == 1) { + flags |= MFI_FRAME_IEEE; + } + + /* + * Prepare the Logical IO frame: 2nd bit is zero for all read cmds + */ + ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; + ldio->cmd_status = 0x0; + ldio->scsi_status = 0x0; + ldio->target_id = device_id; + ldio->timeout = 0; + ldio->reserved_0 = 0; + ldio->pad_0 = 0; + ldio->flags = flags; + ldio->start_lba_hi = 0; + ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; + + /* + * 6-byte READ(0x08) or WRITE(0x0A) cdb + */ + if (scp->cmd_len == 6) { + ldio->lba_count = (u32) scp->cmnd[4]; + ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) | + ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; + + ldio->start_lba_lo &= 0x1FFFFF; + } + + /* + * 10-byte READ(0x28) or WRITE(0x2A) cdb + */ + else if (scp->cmd_len == 10) { + ldio->lba_count = (u32) scp->cmnd[8] | + ((u32) scp->cmnd[7] << 8); + ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | + ((u32) scp->cmnd[3] << 16) | + ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; + } + + /* + * 12-byte READ(0xA8) or WRITE(0xAA) cdb + */ + else if (scp->cmd_len == 12) { + ldio->lba_count = ((u32) scp->cmnd[6] << 24) | + ((u32) scp->cmnd[7] << 16) | + ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; + + ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | + ((u32) scp->cmnd[3] << 16) | + ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; + } + + /* + * 16-byte READ(0x88) or WRITE(0x8A) cdb + */ + else if (scp->cmd_len == 16) { + ldio->lba_count = ((u32) scp->cmnd[10] << 24) | + ((u32) scp->cmnd[11] << 16) | + ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; + + ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) | + ((u32) scp->cmnd[7] << 16) | + ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; + + ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) | + ((u32) scp->cmnd[3] << 16) | + ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; + + } + + /* + * Construct SGL + */ + if (instance->flag_ieee) { + ldio->flags |= MFI_FRAME_SGL64; + ldio->sge_count = megasas_make_sgl_skinny(instance, scp, + &ldio->sgl); + } else if (IS_DMA64) { + ldio->flags |= MFI_FRAME_SGL64; + ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); + } else + ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); + + if (ldio->sge_count > instance->max_num_sge) { + printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n", + ldio->sge_count); + return 0; + } + + /* + * Sense info specific + */ + ldio->sense_len = SCSI_SENSE_BUFFERSIZE; + ldio->sense_buf_phys_addr_hi = 0; + ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr; + + /* + * Compute the total number of frames this command consumes. FW uses + * this number to pull sufficient number of frames from host memory. + */ + cmd->frame_count = megasas_get_frame_count(instance, + ldio->sge_count, IO_FRAME); + + return cmd->frame_count; +} + +/** + * megasas_is_ldio - Checks if the cmd is for logical drive + * @scmd: SCSI command + * + * Called by megasas_queue_command to find out if the command to be queued + * is a logical drive command + */ +inline int megasas_is_ldio(struct scsi_cmnd *cmd) +{ + if (!MEGASAS_IS_LOGICAL(cmd)) + return 0; + switch (cmd->cmnd[0]) { + case READ_10: + case WRITE_10: + case READ_12: + case WRITE_12: + case READ_6: + case WRITE_6: + case READ_16: + case WRITE_16: + return 1; + default: + return 0; + } +} + + /** + * megasas_dump_pending_frames - Dumps the frame address of all pending cmds + * in FW + * @instance: Adapter soft state + */ +static inline void +megasas_dump_pending_frames(struct megasas_instance *instance) +{ + struct megasas_cmd *cmd; + int i,n; + union megasas_sgl *mfi_sgl; + struct megasas_io_frame *ldio; + struct megasas_pthru_frame *pthru; + u32 sgcount; + u32 max_cmd = instance->max_fw_cmds; + + printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); + printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); + if (IS_DMA64) + printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); + else + printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); + + printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no); + for (i = 0; i < max_cmd; i++) { + cmd = instance->cmd_list[i]; + if(!cmd->scmd) + continue; + printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); + if (megasas_is_ldio(cmd->scmd)){ + ldio = (struct megasas_io_frame *)cmd->frame; + mfi_sgl = &ldio->sgl; + sgcount = ldio->sge_count; + printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no, cmd->frame_count,ldio->cmd,ldio->target_id, ldio->start_lba_lo,ldio->start_lba_hi,ldio->sense_buf_phys_addr_lo,sgcount); + } + else { + pthru = (struct megasas_pthru_frame *) cmd->frame; + mfi_sgl = &pthru->sgl; + sgcount = pthru->sge_count; + printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no,cmd->frame_count,pthru->cmd,pthru->target_id,pthru->lun,pthru->cdb_len , pthru->data_xfer_len,pthru->sense_buf_phys_addr_lo,sgcount); + } + if(megasas_dbg_lvl & MEGASAS_DBG_LVL){ + for (n = 0; n < sgcount; n++){ + if (IS_DMA64) + printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%08lx ",mfi_sgl->sge64[n].length , (unsigned long)mfi_sgl->sge64[n].phys_addr) ; + else + printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ; + } + } + printk(KERN_ERR "\n"); + } /*for max_cmd*/ + printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); + for (i = 0; i < max_cmd; i++) { + + cmd = instance->cmd_list[i]; + + if(cmd->sync_cmd == 1){ + printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); + } + } + printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no); +} + +u32 +megasas_build_and_issue_cmd(struct megasas_instance *instance, + struct scsi_cmnd *scmd) +{ + struct megasas_cmd *cmd; + u32 frame_count; + + cmd = megasas_get_cmd(instance); + if (!cmd) + return SCSI_MLQUEUE_HOST_BUSY; + + /* + * Logical drive command + */ + if (megasas_is_ldio(scmd)) + frame_count = megasas_build_ldio(instance, scmd, cmd); + else + frame_count = megasas_build_dcdb(instance, scmd, cmd); + + if (!frame_count) + goto out_return_cmd; + + cmd->scmd = scmd; + scmd->SCp.ptr = (char *)cmd; + + /* + * Issue the command to the FW + */ + atomic_inc(&instance->fw_outstanding); + + instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, + cmd->frame_count-1, instance->reg_set); + + return 0; +out_return_cmd: + megasas_return_cmd(instance, cmd); + return 1; +} + + +/** + * megasas_queue_command - Queue entry point + * @scmd: SCSI command to be queued + * @done: Callback entry point + */ +static int +megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *)) +{ + struct megasas_instance *instance; + unsigned long flags; + + instance = (struct megasas_instance *) + scmd->device->host->hostdata; + + if (instance->issuepend_done == 0) + return SCSI_MLQUEUE_HOST_BUSY; + + spin_lock_irqsave(&instance->hba_lock, flags); + if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { + spin_unlock_irqrestore(&instance->hba_lock, flags); + return SCSI_MLQUEUE_HOST_BUSY; + } + + spin_unlock_irqrestore(&instance->hba_lock, flags); + + scmd->scsi_done = done; + scmd->result = 0; + + if (MEGASAS_IS_LOGICAL(scmd) && + (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) { + scmd->result = DID_BAD_TARGET << 16; + goto out_done; + } + + switch (scmd->cmnd[0]) { + case SYNCHRONIZE_CACHE: + /* + * FW takes care of flush cache on its own + * No need to send it down + */ + scmd->result = DID_OK << 16; + goto out_done; + default: + break; + } + + if (instance->instancet->build_and_issue_cmd(instance, scmd)) { + printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n"); + return SCSI_MLQUEUE_HOST_BUSY; + } + + return 0; + + out_done: + done(scmd); + return 0; +} + +static DEF_SCSI_QCMD(megasas_queue_command) + +static struct megasas_instance *megasas_lookup_instance(u16 host_no) +{ + int i; + + for (i = 0; i < megasas_mgmt_info.max_index; i++) { + + if ((megasas_mgmt_info.instance[i]) && + (megasas_mgmt_info.instance[i]->host->host_no == host_no)) + return megasas_mgmt_info.instance[i]; + } + + return NULL; +} + +static int megasas_slave_configure(struct scsi_device *sdev) +{ + u16 pd_index = 0; + struct megasas_instance *instance ; + + instance = megasas_lookup_instance(sdev->host->host_no); + + /* + * Don't export physical disk devices to the disk driver. + * + * FIXME: Currently we don't export them to the midlayer at all. + * That will be fixed once LSI engineers have audited the + * firmware for possible issues. + */ + if (sdev->channel < MEGASAS_MAX_PD_CHANNELS && + sdev->type == TYPE_DISK) { + pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + + sdev->id; + if (instance->pd_list[pd_index].driveState == + MR_PD_STATE_SYSTEM) { + blk_queue_rq_timeout(sdev->request_queue, + MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); + return 0; + } + return -ENXIO; + } + + /* + * The RAID firmware may require extended timeouts. + */ + blk_queue_rq_timeout(sdev->request_queue, + MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); + return 0; +} + +static int megasas_slave_alloc(struct scsi_device *sdev) +{ + u16 pd_index = 0; + struct megasas_instance *instance ; + instance = megasas_lookup_instance(sdev->host->host_no); + if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) && + (sdev->type == TYPE_DISK)) { + /* + * Open the OS scan to the SYSTEM PD + */ + pd_index = + (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + + sdev->id; + if ((instance->pd_list[pd_index].driveState == + MR_PD_STATE_SYSTEM) && + (instance->pd_list[pd_index].driveType == + TYPE_DISK)) { + return 0; + } + return -ENXIO; + } + return 0; +} + +void megaraid_sas_kill_hba(struct megasas_instance *instance) +{ + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) { + writel(MFI_STOP_ADP, &instance->reg_set->doorbell); + } else { + writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell); + } +} + + /** + * megasas_check_and_restore_queue_depth - Check if queue depth needs to be + * restored to max value + * @instance: Adapter soft state + * + */ +void +megasas_check_and_restore_queue_depth(struct megasas_instance *instance) +{ + unsigned long flags; + if (instance->flag & MEGASAS_FW_BUSY + && time_after(jiffies, instance->last_time + 5 * HZ) + && atomic_read(&instance->fw_outstanding) < 17) { + + spin_lock_irqsave(instance->host->host_lock, flags); + instance->flag &= ~MEGASAS_FW_BUSY; + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { + instance->host->can_queue = + instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; + } else + instance->host->can_queue = + instance->max_fw_cmds - MEGASAS_INT_CMDS; + + spin_unlock_irqrestore(instance->host->host_lock, flags); + } +} + +/** + * megasas_complete_cmd_dpc - Returns FW's controller structure + * @instance_addr: Address of adapter soft state + * + * Tasklet to complete cmds + */ +static void megasas_complete_cmd_dpc(unsigned long instance_addr) +{ + u32 producer; + u32 consumer; + u32 context; + struct megasas_cmd *cmd; + struct megasas_instance *instance = + (struct megasas_instance *)instance_addr; + unsigned long flags; + + /* If we have already declared adapter dead, donot complete cmds */ + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR ) + return; + + spin_lock_irqsave(&instance->completion_lock, flags); + + producer = *instance->producer; + consumer = *instance->consumer; + + while (consumer != producer) { + context = instance->reply_queue[consumer]; + if (context >= instance->max_fw_cmds) { + printk(KERN_ERR "Unexpected context value %x\n", + context); + BUG(); + } + + cmd = instance->cmd_list[context]; + + megasas_complete_cmd(instance, cmd, DID_OK); + + consumer++; + if (consumer == (instance->max_fw_cmds + 1)) { + consumer = 0; + } + } + + *instance->consumer = producer; + + spin_unlock_irqrestore(&instance->completion_lock, flags); + + /* + * Check if we can restore can_queue + */ + megasas_check_and_restore_queue_depth(instance); +} + +static void +megasas_internal_reset_defer_cmds(struct megasas_instance *instance); + +static void +process_fw_state_change_wq(struct work_struct *work); + +void megasas_do_ocr(struct megasas_instance *instance) +{ + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || + (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { + *instance->consumer = MEGASAS_ADPRESET_INPROG_SIGN; + } + instance->instancet->disable_intr(instance->reg_set); + instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; + instance->issuepend_done = 0; + + atomic_set(&instance->fw_outstanding, 0); + megasas_internal_reset_defer_cmds(instance); + process_fw_state_change_wq(&instance->work_init); +} + +/** + * megasas_wait_for_outstanding - Wait for all outstanding cmds + * @instance: Adapter soft state + * + * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to + * complete all its outstanding commands. Returns error if one or more IOs + * are pending after this time period. It also marks the controller dead. + */ +static int megasas_wait_for_outstanding(struct megasas_instance *instance) +{ + int i; + u32 reset_index; + u32 wait_time = MEGASAS_RESET_WAIT_TIME; + u8 adprecovery; + unsigned long flags; + struct list_head clist_local; + struct megasas_cmd *reset_cmd; + u32 fw_state; + u8 kill_adapter_flag; + + spin_lock_irqsave(&instance->hba_lock, flags); + adprecovery = instance->adprecovery; + spin_unlock_irqrestore(&instance->hba_lock, flags); + + if (adprecovery != MEGASAS_HBA_OPERATIONAL) { + + INIT_LIST_HEAD(&clist_local); + spin_lock_irqsave(&instance->hba_lock, flags); + list_splice_init(&instance->internal_reset_pending_q, + &clist_local); + spin_unlock_irqrestore(&instance->hba_lock, flags); + + printk(KERN_NOTICE "megasas: HBA reset wait ...\n"); + for (i = 0; i < wait_time; i++) { + msleep(1000); + spin_lock_irqsave(&instance->hba_lock, flags); + adprecovery = instance->adprecovery; + spin_unlock_irqrestore(&instance->hba_lock, flags); + if (adprecovery == MEGASAS_HBA_OPERATIONAL) + break; + } + + if (adprecovery != MEGASAS_HBA_OPERATIONAL) { + printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n"); + spin_lock_irqsave(&instance->hba_lock, flags); + instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; + spin_unlock_irqrestore(&instance->hba_lock, flags); + return FAILED; + } + + reset_index = 0; + while (!list_empty(&clist_local)) { + reset_cmd = list_entry((&clist_local)->next, + struct megasas_cmd, list); + list_del_init(&reset_cmd->list); + if (reset_cmd->scmd) { + reset_cmd->scmd->result = DID_RESET << 16; + printk(KERN_NOTICE "%d:%p reset [%02x]\n", + reset_index, reset_cmd, + reset_cmd->scmd->cmnd[0]); + + reset_cmd->scmd->scsi_done(reset_cmd->scmd); + megasas_return_cmd(instance, reset_cmd); + } else if (reset_cmd->sync_cmd) { + printk(KERN_NOTICE "megasas:%p synch cmds" + "reset queue\n", + reset_cmd); + + reset_cmd->cmd_status = ENODATA; + instance->instancet->fire_cmd(instance, + reset_cmd->frame_phys_addr, + 0, instance->reg_set); + } else { + printk(KERN_NOTICE "megasas: %p unexpected" + "cmds lst\n", + reset_cmd); + } + reset_index++; + } + + return SUCCESS; + } + + for (i = 0; i < wait_time; i++) { + + int outstanding = atomic_read(&instance->fw_outstanding); + + if (!outstanding) + break; + + if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { + printk(KERN_NOTICE "megasas: [%2d]waiting for %d " + "commands to complete\n",i,outstanding); + /* + * Call cmd completion routine. Cmd to be + * be completed directly without depending on isr. + */ + megasas_complete_cmd_dpc((unsigned long)instance); + } + + msleep(1000); + } + + i = 0; + kill_adapter_flag = 0; + do { + fw_state = instance->instancet->read_fw_status_reg( + instance->reg_set) & MFI_STATE_MASK; + if ((fw_state == MFI_STATE_FAULT) && + (instance->disableOnlineCtrlReset == 0)) { + if (i == 3) { + kill_adapter_flag = 2; + break; + } + megasas_do_ocr(instance); + kill_adapter_flag = 1; + + /* wait for 1 secs to let FW finish the pending cmds */ + msleep(1000); + } + i++; + } while (i <= 3); + + if (atomic_read(&instance->fw_outstanding) && + !kill_adapter_flag) { + if (instance->disableOnlineCtrlReset == 0) { + + megasas_do_ocr(instance); + + /* wait for 5 secs to let FW finish the pending cmds */ + for (i = 0; i < wait_time; i++) { + int outstanding = + atomic_read(&instance->fw_outstanding); + if (!outstanding) + return SUCCESS; + msleep(1000); + } + } + } + + if (atomic_read(&instance->fw_outstanding) || + (kill_adapter_flag == 2)) { + printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n"); + /* + * Send signal to FW to stop processing any pending cmds. + * The controller will be taken offline by the OS now. + */ + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { + writel(MFI_STOP_ADP, + &instance->reg_set->doorbell); + } else { + writel(MFI_STOP_ADP, + &instance->reg_set->inbound_doorbell); + } + megasas_dump_pending_frames(instance); + spin_lock_irqsave(&instance->hba_lock, flags); + instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; + spin_unlock_irqrestore(&instance->hba_lock, flags); + return FAILED; + } + + printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n"); + + return SUCCESS; +} + +/** + * megasas_generic_reset - Generic reset routine + * @scmd: Mid-layer SCSI command + * + * This routine implements a generic reset handler for device, bus and host + * reset requests. Device, bus and host specific reset handlers can use this + * function after they do their specific tasks. + */ +static int megasas_generic_reset(struct scsi_cmnd *scmd) +{ + int ret_val; + struct megasas_instance *instance; + + instance = (struct megasas_instance *)scmd->device->host->hostdata; + + scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", + scmd->cmnd[0], scmd->retries); + + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { + printk(KERN_ERR "megasas: cannot recover from previous reset " + "failures\n"); + return FAILED; + } + + ret_val = megasas_wait_for_outstanding(instance); + if (ret_val == SUCCESS) + printk(KERN_NOTICE "megasas: reset successful \n"); + else + printk(KERN_ERR "megasas: failed to do reset\n"); + + return ret_val; +} + +/** + * megasas_reset_timer - quiesce the adapter if required + * @scmd: scsi cmnd + * + * Sets the FW busy flag and reduces the host->can_queue if the + * cmd has not been completed within the timeout period. + */ +static enum +blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) +{ + struct megasas_instance *instance; + unsigned long flags; + + if (time_after(jiffies, scmd->jiffies_at_alloc + + (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) { + return BLK_EH_NOT_HANDLED; + } + + instance = (struct megasas_instance *)scmd->device->host->hostdata; + if (!(instance->flag & MEGASAS_FW_BUSY)) { + /* FW is busy, throttle IO */ + spin_lock_irqsave(instance->host->host_lock, flags); + + instance->host->can_queue = 16; + instance->last_time = jiffies; + instance->flag |= MEGASAS_FW_BUSY; + + spin_unlock_irqrestore(instance->host->host_lock, flags); + } + return BLK_EH_RESET_TIMER; +} + +/** + * megasas_reset_device - Device reset handler entry point + */ +static int megasas_reset_device(struct scsi_cmnd *scmd) +{ + int ret; + + /* + * First wait for all commands to complete + */ + ret = megasas_generic_reset(scmd); + + return ret; +} + +/** + * megasas_reset_bus_host - Bus & host reset handler entry point + */ +static int megasas_reset_bus_host(struct scsi_cmnd *scmd) +{ + int ret; + struct megasas_instance *instance; + instance = (struct megasas_instance *)scmd->device->host->hostdata; + + /* + * First wait for all commands to complete + */ + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) + ret = megasas_reset_fusion(scmd->device->host); + else + ret = megasas_generic_reset(scmd); + + return ret; +} + +/** + * megasas_bios_param - Returns disk geometry for a disk + * @sdev: device handle + * @bdev: block device + * @capacity: drive capacity + * @geom: geometry parameters + */ +static int +megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, + sector_t capacity, int geom[]) +{ + int heads; + int sectors; + sector_t cylinders; + unsigned long tmp; + /* Default heads (64) & sectors (32) */ + heads = 64; + sectors = 32; + + tmp = heads * sectors; + cylinders = capacity; + + sector_div(cylinders, tmp); + + /* + * Handle extended translation size for logical drives > 1Gb + */ + + if (capacity >= 0x200000) { + heads = 255; + sectors = 63; + tmp = heads*sectors; + cylinders = capacity; + sector_div(cylinders, tmp); + } + + geom[0] = heads; + geom[1] = sectors; + geom[2] = cylinders; + + return 0; +} + +static void megasas_aen_polling(struct work_struct *work); + +/** + * megasas_service_aen - Processes an event notification + * @instance: Adapter soft state + * @cmd: AEN command completed by the ISR + * + * For AEN, driver sends a command down to FW that is held by the FW till an + * event occurs. When an event of interest occurs, FW completes the command + * that it was previously holding. + * + * This routines sends SIGIO signal to processes that have registered with the + * driver for AEN. + */ +static void +megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) +{ + unsigned long flags; + /* + * Don't signal app if it is just an aborted previously registered aen + */ + if ((!cmd->abort_aen) && (instance->unload == 0)) { + spin_lock_irqsave(&poll_aen_lock, flags); + megasas_poll_wait_aen = 1; + spin_unlock_irqrestore(&poll_aen_lock, flags); + wake_up(&megasas_poll_wait); + kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); + } + else + cmd->abort_aen = 0; + + instance->aen_cmd = NULL; + megasas_return_cmd(instance, cmd); + + if ((instance->unload == 0) && + ((instance->issuepend_done == 1))) { + struct megasas_aen_event *ev; + ev = kzalloc(sizeof(*ev), GFP_ATOMIC); + if (!ev) { + printk(KERN_ERR "megasas_service_aen: out of memory\n"); + } else { + ev->instance = instance; + instance->ev = ev; + INIT_WORK(&ev->hotplug_work, megasas_aen_polling); + schedule_delayed_work( + (struct delayed_work *)&ev->hotplug_work, 0); + } + } +} + +static int megasas_change_queue_depth(struct scsi_device *sdev, + int queue_depth, int reason) +{ + if (reason != SCSI_QDEPTH_DEFAULT) + return -EOPNOTSUPP; + + if (queue_depth > sdev->host->can_queue) + queue_depth = sdev->host->can_queue; + scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), + queue_depth); + + return queue_depth; +} + +/* + * Scsi host template for megaraid_sas driver + */ +static struct scsi_host_template megasas_template = { + + .module = THIS_MODULE, + .name = "LSI SAS based MegaRAID driver", + .proc_name = "megaraid_sas", + .slave_configure = megasas_slave_configure, + .slave_alloc = megasas_slave_alloc, + .queuecommand = megasas_queue_command, + .eh_device_reset_handler = megasas_reset_device, + .eh_bus_reset_handler = megasas_reset_bus_host, + .eh_host_reset_handler = megasas_reset_bus_host, + .eh_timed_out = megasas_reset_timer, + .bios_param = megasas_bios_param, + .use_clustering = ENABLE_CLUSTERING, + .change_queue_depth = megasas_change_queue_depth, +}; + +/** + * megasas_complete_int_cmd - Completes an internal command + * @instance: Adapter soft state + * @cmd: Command to be completed + * + * The megasas_issue_blocked_cmd() function waits for a command to complete + * after it issues a command. This function wakes up that waiting routine by + * calling wake_up() on the wait queue. + */ +static void +megasas_complete_int_cmd(struct megasas_instance *instance, + struct megasas_cmd *cmd) +{ + cmd->cmd_status = cmd->frame->io.cmd_status; + + if (cmd->cmd_status == ENODATA) { + cmd->cmd_status = 0; + } + wake_up(&instance->int_cmd_wait_q); +} + +/** + * megasas_complete_abort - Completes aborting a command + * @instance: Adapter soft state + * @cmd: Cmd that was issued to abort another cmd + * + * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q + * after it issues an abort on a previously issued command. This function + * wakes up all functions waiting on the same wait queue. + */ +static void +megasas_complete_abort(struct megasas_instance *instance, + struct megasas_cmd *cmd) +{ + if (cmd->sync_cmd) { + cmd->sync_cmd = 0; + cmd->cmd_status = 0; + wake_up(&instance->abort_cmd_wait_q); + } + + return; +} + +/** + * megasas_complete_cmd - Completes a command + * @instance: Adapter soft state + * @cmd: Command to be completed + * @alt_status: If non-zero, use this value as status to + * SCSI mid-layer instead of the value returned + * by the FW. This should be used if caller wants + * an alternate status (as in the case of aborted + * commands) + */ +void +megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, + u8 alt_status) +{ + int exception = 0; + struct megasas_header *hdr = &cmd->frame->hdr; + unsigned long flags; + struct fusion_context *fusion = instance->ctrl_context; + + /* flag for the retry reset */ + cmd->retry_for_fw_reset = 0; + + if (cmd->scmd) + cmd->scmd->SCp.ptr = NULL; + + switch (hdr->cmd) { + case MFI_CMD_INVALID: + /* Some older 1068 controller FW may keep a pended + MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel + when booting the kdump kernel. Ignore this command to + prevent a kernel panic on shutdown of the kdump kernel. */ + printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command " + "completed.\n"); + printk(KERN_WARNING "megaraid_sas: If you have a controller " + "other than PERC5, please upgrade your firmware.\n"); + break; + case MFI_CMD_PD_SCSI_IO: + case MFI_CMD_LD_SCSI_IO: + + /* + * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been + * issued either through an IO path or an IOCTL path. If it + * was via IOCTL, we will send it to internal completion. + */ + if (cmd->sync_cmd) { + cmd->sync_cmd = 0; + megasas_complete_int_cmd(instance, cmd); + break; + } + + case MFI_CMD_LD_READ: + case MFI_CMD_LD_WRITE: + + if (alt_status) { + cmd->scmd->result = alt_status << 16; + exception = 1; + } + + if (exception) { + + atomic_dec(&instance->fw_outstanding); + + scsi_dma_unmap(cmd->scmd); + cmd->scmd->scsi_done(cmd->scmd); + megasas_return_cmd(instance, cmd); + + break; + } + + switch (hdr->cmd_status) { + + case MFI_STAT_OK: + cmd->scmd->result = DID_OK << 16; + break; + + case MFI_STAT_SCSI_IO_FAILED: + case MFI_STAT_LD_INIT_IN_PROGRESS: + cmd->scmd->result = + (DID_ERROR << 16) | hdr->scsi_status; + break; + + case MFI_STAT_SCSI_DONE_WITH_ERROR: + + cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; + + if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { + memset(cmd->scmd->sense_buffer, 0, + SCSI_SENSE_BUFFERSIZE); + memcpy(cmd->scmd->sense_buffer, cmd->sense, + hdr->sense_len); + + cmd->scmd->result |= DRIVER_SENSE << 24; + } + + break; + + case MFI_STAT_LD_OFFLINE: + case MFI_STAT_DEVICE_NOT_FOUND: + cmd->scmd->result = DID_BAD_TARGET << 16; + break; + + default: + printk(KERN_DEBUG "megasas: MFI FW status %#x\n", + hdr->cmd_status); + cmd->scmd->result = DID_ERROR << 16; + break; + } + + atomic_dec(&instance->fw_outstanding); + + scsi_dma_unmap(cmd->scmd); + cmd->scmd->scsi_done(cmd->scmd); + megasas_return_cmd(instance, cmd); + + break; + + case MFI_CMD_SMP: + case MFI_CMD_STP: + case MFI_CMD_DCMD: + /* Check for LD map update */ + if ((cmd->frame->dcmd.opcode == MR_DCMD_LD_MAP_GET_INFO) && + (cmd->frame->dcmd.mbox.b[1] == 1)) { + spin_lock_irqsave(instance->host->host_lock, flags); + if (cmd->frame->hdr.cmd_status != 0) { + if (cmd->frame->hdr.cmd_status != + MFI_STAT_NOT_FOUND) + printk(KERN_WARNING "megasas: map sync" + "failed, status = 0x%x.\n", + cmd->frame->hdr.cmd_status); + else { + megasas_return_cmd(instance, cmd); + spin_unlock_irqrestore( + instance->host->host_lock, + flags); + break; + } + } else + instance->map_id++; + megasas_return_cmd(instance, cmd); + if (MR_ValidateMapInfo( + fusion->ld_map[(instance->map_id & 1)], + fusion->load_balance_info)) + fusion->fast_path_io = 1; + else + fusion->fast_path_io = 0; + megasas_sync_map_info(instance); + spin_unlock_irqrestore(instance->host->host_lock, + flags); + break; + } + if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO || + cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) { + spin_lock_irqsave(&poll_aen_lock, flags); + megasas_poll_wait_aen = 0; + spin_unlock_irqrestore(&poll_aen_lock, flags); + } + + /* + * See if got an event notification + */ + if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT) + megasas_service_aen(instance, cmd); + else + megasas_complete_int_cmd(instance, cmd); + + break; + + case MFI_CMD_ABORT: + /* + * Cmd issued to abort another cmd returned + */ + megasas_complete_abort(instance, cmd); + break; + + default: + printk("megasas: Unknown command completed! [0x%X]\n", + hdr->cmd); + break; + } +} + +/** + * megasas_issue_pending_cmds_again - issue all pending cmds + * in FW again because of the fw reset + * @instance: Adapter soft state + */ +static inline void +megasas_issue_pending_cmds_again(struct megasas_instance *instance) +{ + struct megasas_cmd *cmd; + struct list_head clist_local; + union megasas_evt_class_locale class_locale; + unsigned long flags; + u32 seq_num; + + INIT_LIST_HEAD(&clist_local); + spin_lock_irqsave(&instance->hba_lock, flags); + list_splice_init(&instance->internal_reset_pending_q, &clist_local); + spin_unlock_irqrestore(&instance->hba_lock, flags); + + while (!list_empty(&clist_local)) { + cmd = list_entry((&clist_local)->next, + struct megasas_cmd, list); + list_del_init(&cmd->list); + + if (cmd->sync_cmd || cmd->scmd) { + printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d" + "detected to be pending while HBA reset.\n", + cmd, cmd->scmd, cmd->sync_cmd); + + cmd->retry_for_fw_reset++; + + if (cmd->retry_for_fw_reset == 3) { + printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d" + "was tried multiple times during reset." + "Shutting down the HBA\n", + cmd, cmd->scmd, cmd->sync_cmd); + megaraid_sas_kill_hba(instance); + + instance->adprecovery = + MEGASAS_HW_CRITICAL_ERROR; + return; + } + } + + if (cmd->sync_cmd == 1) { + if (cmd->scmd) { + printk(KERN_NOTICE "megaraid_sas: unexpected" + "cmd attached to internal command!\n"); + } + printk(KERN_NOTICE "megasas: %p synchronous cmd" + "on the internal reset queue," + "issue it again.\n", cmd); + cmd->cmd_status = ENODATA; + instance->instancet->fire_cmd(instance, + cmd->frame_phys_addr , + 0, instance->reg_set); + } else if (cmd->scmd) { + printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]" + "detected on the internal queue, issue again.\n", + cmd, cmd->scmd->cmnd[0]); + + atomic_inc(&instance->fw_outstanding); + instance->instancet->fire_cmd(instance, + cmd->frame_phys_addr, + cmd->frame_count-1, instance->reg_set); + } else { + printk(KERN_NOTICE "megasas: %p unexpected cmd on the" + "internal reset defer list while re-issue!!\n", + cmd); + } + } + + if (instance->aen_cmd) { + printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n"); + megasas_return_cmd(instance, instance->aen_cmd); + + instance->aen_cmd = NULL; + } + + /* + * Initiate AEN (Asynchronous Event Notification) + */ + seq_num = instance->last_seq_num; + class_locale.members.reserved = 0; + class_locale.members.locale = MR_EVT_LOCALE_ALL; + class_locale.members.class = MR_EVT_CLASS_DEBUG; + + megasas_register_aen(instance, seq_num, class_locale.word); +} + +/** + * Move the internal reset pending commands to a deferred queue. + * + * We move the commands pending at internal reset time to a + * pending queue. This queue would be flushed after successful + * completion of the internal reset sequence. if the internal reset + * did not complete in time, the kernel reset handler would flush + * these commands. + **/ +static void +megasas_internal_reset_defer_cmds(struct megasas_instance *instance) +{ + struct megasas_cmd *cmd; + int i; + u32 max_cmd = instance->max_fw_cmds; + u32 defer_index; + unsigned long flags; + + defer_index = 0; + spin_lock_irqsave(&instance->cmd_pool_lock, flags); + for (i = 0; i < max_cmd; i++) { + cmd = instance->cmd_list[i]; + if (cmd->sync_cmd == 1 || cmd->scmd) { + printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p" + "on the defer queue as internal\n", + defer_index, cmd, cmd->sync_cmd, cmd->scmd); + + if (!list_empty(&cmd->list)) { + printk(KERN_NOTICE "megaraid_sas: ERROR while" + " moving this cmd:%p, %d %p, it was" + "discovered on some list?\n", + cmd, cmd->sync_cmd, cmd->scmd); + + list_del_init(&cmd->list); + } + defer_index++; + list_add_tail(&cmd->list, + &instance->internal_reset_pending_q); + } + } + spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); +} + + +static void +process_fw_state_change_wq(struct work_struct *work) +{ + struct megasas_instance *instance = + container_of(work, struct megasas_instance, work_init); + u32 wait; + unsigned long flags; + + if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) { + printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n", + instance->adprecovery); + return ; + } + + if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { + printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault" + "state, restarting it...\n"); + + instance->instancet->disable_intr(instance->reg_set); + atomic_set(&instance->fw_outstanding, 0); + + atomic_set(&instance->fw_reset_no_pci_access, 1); + instance->instancet->adp_reset(instance, instance->reg_set); + atomic_set(&instance->fw_reset_no_pci_access, 0 ); + + printk(KERN_NOTICE "megaraid_sas: FW restarted successfully," + "initiating next stage...\n"); + + printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine," + "state 2 starting...\n"); + + /*waitting for about 20 second before start the second init*/ + for (wait = 0; wait < 30; wait++) { + msleep(1000); + } + + if (megasas_transition_to_ready(instance, 1)) { + printk(KERN_NOTICE "megaraid_sas:adapter not ready\n"); + + megaraid_sas_kill_hba(instance); + instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; + return ; + } + + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || + (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) + ) { + *instance->consumer = *instance->producer; + } else { + *instance->consumer = 0; + *instance->producer = 0; + } + + megasas_issue_init_mfi(instance); + + spin_lock_irqsave(&instance->hba_lock, flags); + instance->adprecovery = MEGASAS_HBA_OPERATIONAL; + spin_unlock_irqrestore(&instance->hba_lock, flags); + instance->instancet->enable_intr(instance->reg_set); + + megasas_issue_pending_cmds_again(instance); + instance->issuepend_done = 1; + } + return ; +} + +/** + * megasas_deplete_reply_queue - Processes all completed commands + * @instance: Adapter soft state + * @alt_status: Alternate status to be returned to + * SCSI mid-layer instead of the status + * returned by the FW + * Note: this must be called with hba lock held + */ +static int +megasas_deplete_reply_queue(struct megasas_instance *instance, + u8 alt_status) +{ + u32 mfiStatus; + u32 fw_state; + + if ((mfiStatus = instance->instancet->check_reset(instance, + instance->reg_set)) == 1) { + return IRQ_HANDLED; + } + + if ((mfiStatus = instance->instancet->clear_intr( + instance->reg_set) + ) == 0) { + /* Hardware may not set outbound_intr_status in MSI-X mode */ + if (!instance->msix_vectors) + return IRQ_NONE; + } + + instance->mfiStatus = mfiStatus; + + if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { + fw_state = instance->instancet->read_fw_status_reg( + instance->reg_set) & MFI_STATE_MASK; + + if (fw_state != MFI_STATE_FAULT) { + printk(KERN_NOTICE "megaraid_sas: fw state:%x\n", + fw_state); + } + + if ((fw_state == MFI_STATE_FAULT) && + (instance->disableOnlineCtrlReset == 0)) { + printk(KERN_NOTICE "megaraid_sas: wait adp restart\n"); + + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS1064R) || + (instance->pdev->device == + PCI_DEVICE_ID_DELL_PERC5) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_VERDE_ZCR)) { + + *instance->consumer = + MEGASAS_ADPRESET_INPROG_SIGN; + } + + + instance->instancet->disable_intr(instance->reg_set); + instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; + instance->issuepend_done = 0; + + atomic_set(&instance->fw_outstanding, 0); + megasas_internal_reset_defer_cmds(instance); + + printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n", + fw_state, instance->adprecovery); + + schedule_work(&instance->work_init); + return IRQ_HANDLED; + + } else { + printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n", + fw_state, instance->disableOnlineCtrlReset); + } + } + + tasklet_schedule(&instance->isr_tasklet); + return IRQ_HANDLED; +} +/** + * megasas_isr - isr entry point + */ +static irqreturn_t megasas_isr(int irq, void *devp) +{ + struct megasas_irq_context *irq_context = devp; + struct megasas_instance *instance = irq_context->instance; + unsigned long flags; + irqreturn_t rc; + + if (atomic_read(&instance->fw_reset_no_pci_access)) + return IRQ_HANDLED; + + spin_lock_irqsave(&instance->hba_lock, flags); + rc = megasas_deplete_reply_queue(instance, DID_OK); + spin_unlock_irqrestore(&instance->hba_lock, flags); + + return rc; +} + +/** + * megasas_transition_to_ready - Move the FW to READY state + * @instance: Adapter soft state + * + * During the initialization, FW passes can potentially be in any one of + * several possible states. If the FW in operational, waiting-for-handshake + * states, driver must take steps to bring it to ready state. Otherwise, it + * has to wait for the ready state. + */ +int +megasas_transition_to_ready(struct megasas_instance *instance, int ocr) +{ + int i; + u8 max_wait; + u32 fw_state; + u32 cur_state; + u32 abs_state, curr_abs_state; + + fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; + + if (fw_state != MFI_STATE_READY) + printk(KERN_INFO "megasas: Waiting for FW to come to ready" + " state\n"); + + while (fw_state != MFI_STATE_READY) { + + abs_state = + instance->instancet->read_fw_status_reg(instance->reg_set); + + switch (fw_state) { + + case MFI_STATE_FAULT: + printk(KERN_DEBUG "megasas: FW in FAULT state!!\n"); + if (ocr) { + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_FAULT; + break; + } else + return -ENODEV; + + case MFI_STATE_WAIT_HANDSHAKE: + /* + * Set the CLR bit in inbound doorbell + */ + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0071SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_INVADER)) { + writel( + MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, + &instance->reg_set->doorbell); + } else { + writel( + MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, + &instance->reg_set->inbound_doorbell); + } + + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_WAIT_HANDSHAKE; + break; + + case MFI_STATE_BOOT_MESSAGE_PENDING: + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0071SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_INVADER)) { + writel(MFI_INIT_HOTPLUG, + &instance->reg_set->doorbell); + } else + writel(MFI_INIT_HOTPLUG, + &instance->reg_set->inbound_doorbell); + + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; + break; + + case MFI_STATE_OPERATIONAL: + /* + * Bring it to READY state; assuming max wait 10 secs + */ + instance->instancet->disable_intr(instance->reg_set); + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0071SKINNY) || + (instance->pdev->device + == PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device + == PCI_DEVICE_ID_LSI_INVADER)) { + writel(MFI_RESET_FLAGS, + &instance->reg_set->doorbell); + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_INVADER)) { + for (i = 0; i < (10 * 1000); i += 20) { + if (readl( + &instance-> + reg_set-> + doorbell) & 1) + msleep(20); + else + break; + } + } + } else + writel(MFI_RESET_FLAGS, + &instance->reg_set->inbound_doorbell); + + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_OPERATIONAL; + break; + + case MFI_STATE_UNDEFINED: + /* + * This state should not last for more than 2 seconds + */ + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_UNDEFINED; + break; + + case MFI_STATE_BB_INIT: + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_BB_INIT; + break; + + case MFI_STATE_FW_INIT: + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_FW_INIT; + break; + + case MFI_STATE_FW_INIT_2: + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_FW_INIT_2; + break; + + case MFI_STATE_DEVICE_SCAN: + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_DEVICE_SCAN; + break; + + case MFI_STATE_FLUSH_CACHE: + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_FLUSH_CACHE; + break; + + default: + printk(KERN_DEBUG "megasas: Unknown state 0x%x\n", + fw_state); + return -ENODEV; + } + + /* + * The cur_state should not last for more than max_wait secs + */ + for (i = 0; i < (max_wait * 1000); i++) { + fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & + MFI_STATE_MASK ; + curr_abs_state = + instance->instancet->read_fw_status_reg(instance->reg_set); + + if (abs_state == curr_abs_state) { + msleep(1); + } else + break; + } + + /* + * Return error if fw_state hasn't changed after max_wait + */ + if (curr_abs_state == abs_state) { + printk(KERN_DEBUG "FW state [%d] hasn't changed " + "in %d secs\n", fw_state, max_wait); + return -ENODEV; + } + } + printk(KERN_INFO "megasas: FW now in Ready state\n"); + + return 0; +} + +/** + * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool + * @instance: Adapter soft state + */ +static void megasas_teardown_frame_pool(struct megasas_instance *instance) +{ + int i; + u32 max_cmd = instance->max_mfi_cmds; + struct megasas_cmd *cmd; + + if (!instance->frame_dma_pool) + return; + + /* + * Return all frames to pool + */ + for (i = 0; i < max_cmd; i++) { + + cmd = instance->cmd_list[i]; + + if (cmd->frame) + pci_pool_free(instance->frame_dma_pool, cmd->frame, + cmd->frame_phys_addr); + + if (cmd->sense) + pci_pool_free(instance->sense_dma_pool, cmd->sense, + cmd->sense_phys_addr); + } + + /* + * Now destroy the pool itself + */ + pci_pool_destroy(instance->frame_dma_pool); + pci_pool_destroy(instance->sense_dma_pool); + + instance->frame_dma_pool = NULL; + instance->sense_dma_pool = NULL; +} + +/** + * megasas_create_frame_pool - Creates DMA pool for cmd frames + * @instance: Adapter soft state + * + * Each command packet has an embedded DMA memory buffer that is used for + * filling MFI frame and the SG list that immediately follows the frame. This + * function creates those DMA memory buffers for each command packet by using + * PCI pool facility. + */ +static int megasas_create_frame_pool(struct megasas_instance *instance) +{ + int i; + u32 max_cmd; + u32 sge_sz; + u32 sgl_sz; + u32 total_sz; + u32 frame_count; + struct megasas_cmd *cmd; + + max_cmd = instance->max_mfi_cmds; + + /* + * Size of our frame is 64 bytes for MFI frame, followed by max SG + * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer + */ + sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : + sizeof(struct megasas_sge32); + + if (instance->flag_ieee) { + sge_sz = sizeof(struct megasas_sge_skinny); + } + + /* + * Calculated the number of 64byte frames required for SGL + */ + sgl_sz = sge_sz * instance->max_num_sge; + frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE; + frame_count = 15; + + /* + * We need one extra frame for the MFI command + */ + frame_count++; + + total_sz = MEGAMFI_FRAME_SIZE * frame_count; + /* + * Use DMA pool facility provided by PCI layer + */ + instance->frame_dma_pool = pci_pool_create("megasas frame pool", + instance->pdev, total_sz, 64, + 0); + + if (!instance->frame_dma_pool) { + printk(KERN_DEBUG "megasas: failed to setup frame pool\n"); + return -ENOMEM; + } + + instance->sense_dma_pool = pci_pool_create("megasas sense pool", + instance->pdev, 128, 4, 0); + + if (!instance->sense_dma_pool) { + printk(KERN_DEBUG "megasas: failed to setup sense pool\n"); + + pci_pool_destroy(instance->frame_dma_pool); + instance->frame_dma_pool = NULL; + + return -ENOMEM; + } + + /* + * Allocate and attach a frame to each of the commands in cmd_list. + * By making cmd->index as the context instead of the &cmd, we can + * always use 32bit context regardless of the architecture + */ + for (i = 0; i < max_cmd; i++) { + + cmd = instance->cmd_list[i]; + + cmd->frame = pci_pool_alloc(instance->frame_dma_pool, + GFP_KERNEL, &cmd->frame_phys_addr); + + cmd->sense = pci_pool_alloc(instance->sense_dma_pool, + GFP_KERNEL, &cmd->sense_phys_addr); + + /* + * megasas_teardown_frame_pool() takes care of freeing + * whatever has been allocated + */ + if (!cmd->frame || !cmd->sense) { + printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n"); + megasas_teardown_frame_pool(instance); + return -ENOMEM; + } + + memset(cmd->frame, 0, total_sz); + cmd->frame->io.context = cmd->index; + cmd->frame->io.pad_0 = 0; + if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && + (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && + (reset_devices)) + cmd->frame->hdr.cmd = MFI_CMD_INVALID; + } + + return 0; +} + +/** + * megasas_free_cmds - Free all the cmds in the free cmd pool + * @instance: Adapter soft state + */ +void megasas_free_cmds(struct megasas_instance *instance) +{ + int i; + /* First free the MFI frame pool */ + megasas_teardown_frame_pool(instance); + + /* Free all the commands in the cmd_list */ + for (i = 0; i < instance->max_mfi_cmds; i++) + + kfree(instance->cmd_list[i]); + + /* Free the cmd_list buffer itself */ + kfree(instance->cmd_list); + instance->cmd_list = NULL; + + INIT_LIST_HEAD(&instance->cmd_pool); +} + +/** + * megasas_alloc_cmds - Allocates the command packets + * @instance: Adapter soft state + * + * Each command that is issued to the FW, whether IO commands from the OS or + * internal commands like IOCTLs, are wrapped in local data structure called + * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to + * the FW. + * + * Each frame has a 32-bit field called context (tag). This context is used + * to get back the megasas_cmd from the frame when a frame gets completed in + * the ISR. Typically the address of the megasas_cmd itself would be used as + * the context. But we wanted to keep the differences between 32 and 64 bit + * systems to the mininum. We always use 32 bit integers for the context. In + * this driver, the 32 bit values are the indices into an array cmd_list. + * This array is used only to look up the megasas_cmd given the context. The + * free commands themselves are maintained in a linked list called cmd_pool. + */ +int megasas_alloc_cmds(struct megasas_instance *instance) +{ + int i; + int j; + u32 max_cmd; + struct megasas_cmd *cmd; + + max_cmd = instance->max_mfi_cmds; + + /* + * instance->cmd_list is an array of struct megasas_cmd pointers. + * Allocate the dynamic array first and then allocate individual + * commands. + */ + instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); + + if (!instance->cmd_list) { + printk(KERN_DEBUG "megasas: out of memory\n"); + return -ENOMEM; + } + + memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd); + + for (i = 0; i < max_cmd; i++) { + instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), + GFP_KERNEL); + + if (!instance->cmd_list[i]) { + + for (j = 0; j < i; j++) + kfree(instance->cmd_list[j]); + + kfree(instance->cmd_list); + instance->cmd_list = NULL; + + return -ENOMEM; + } + } + + /* + * Add all the commands to command pool (instance->cmd_pool) + */ + for (i = 0; i < max_cmd; i++) { + cmd = instance->cmd_list[i]; + memset(cmd, 0, sizeof(struct megasas_cmd)); + cmd->index = i; + cmd->scmd = NULL; + cmd->instance = instance; + + list_add_tail(&cmd->list, &instance->cmd_pool); + } + + /* + * Create a frame pool and assign one frame to each cmd + */ + if (megasas_create_frame_pool(instance)) { + printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); + megasas_free_cmds(instance); + } + + return 0; +} + +/* + * megasas_get_pd_list_info - Returns FW's pd_list structure + * @instance: Adapter soft state + * @pd_list: pd_list structure + * + * Issues an internal command (DCMD) to get the FW's controller PD + * list structure. This information is mainly used to find out SYSTEM + * supported by the FW. + */ +static int +megasas_get_pd_list(struct megasas_instance *instance) +{ + int ret = 0, pd_index = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_PD_LIST *ci; + struct MR_PD_ADDRESS *pd_addr; + dma_addr_t ci_h = 0; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n"); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + ci = pci_alloc_consistent(instance->pdev, + MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h); + + if (!ci) { + printk(KERN_DEBUG "Failed to alloc mem for pd_list\n"); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; + dcmd->mbox.b[1] = 0; + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0xFF; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST); + dcmd->opcode = MR_DCMD_PD_LIST_QUERY; + dcmd->sgl.sge32[0].phys_addr = ci_h; + dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST); + + if (!megasas_issue_polled(instance, cmd)) { + ret = 0; + } else { + ret = -1; + } + + /* + * the following function will get the instance PD LIST. + */ + + pd_addr = ci->addr; + + if ( ret == 0 && + (ci->count < + (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) { + + memset(instance->pd_list, 0, + MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); + + for (pd_index = 0; pd_index < ci->count; pd_index++) { + + instance->pd_list[pd_addr->deviceId].tid = + pd_addr->deviceId; + instance->pd_list[pd_addr->deviceId].driveType = + pd_addr->scsiDevType; + instance->pd_list[pd_addr->deviceId].driveState = + MR_PD_STATE_SYSTEM; + pd_addr++; + } + } + + pci_free_consistent(instance->pdev, + MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), + ci, ci_h); + megasas_return_cmd(instance, cmd); + + return ret; +} + +/* + * megasas_get_ld_list_info - Returns FW's ld_list structure + * @instance: Adapter soft state + * @ld_list: ld_list structure + * + * Issues an internal command (DCMD) to get the FW's controller PD + * list structure. This information is mainly used to find out SYSTEM + * supported by the FW. + */ +static int +megasas_get_ld_list(struct megasas_instance *instance) +{ + int ret = 0, ld_index = 0, ids = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_LD_LIST *ci; + dma_addr_t ci_h = 0; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n"); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + ci = pci_alloc_consistent(instance->pdev, + sizeof(struct MR_LD_LIST), + &ci_h); + + if (!ci) { + printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n"); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0xFF; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->data_xfer_len = sizeof(struct MR_LD_LIST); + dcmd->opcode = MR_DCMD_LD_GET_LIST; + dcmd->sgl.sge32[0].phys_addr = ci_h; + dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST); + dcmd->pad_0 = 0; + + if (!megasas_issue_polled(instance, cmd)) { + ret = 0; + } else { + ret = -1; + } + + /* the following function will get the instance PD LIST */ + + if ((ret == 0) && (ci->ldCount <= MAX_LOGICAL_DRIVES)) { + memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); + + for (ld_index = 0; ld_index < ci->ldCount; ld_index++) { + if (ci->ldList[ld_index].state != 0) { + ids = ci->ldList[ld_index].ref.targetId; + instance->ld_ids[ids] = + ci->ldList[ld_index].ref.targetId; + } + } + } + + pci_free_consistent(instance->pdev, + sizeof(struct MR_LD_LIST), + ci, + ci_h); + + megasas_return_cmd(instance, cmd); + return ret; +} + +/** + * megasas_get_controller_info - Returns FW's controller structure + * @instance: Adapter soft state + * @ctrl_info: Controller information structure + * + * Issues an internal command (DCMD) to get the FW's controller structure. + * This information is mainly used to find out the maximum IO transfer per + * command supported by the FW. + */ +static int +megasas_get_ctrl_info(struct megasas_instance *instance, + struct megasas_ctrl_info *ctrl_info) +{ + int ret = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct megasas_ctrl_info *ci; + dma_addr_t ci_h = 0; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_DEBUG "megasas: Failed to get a free cmd\n"); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + ci = pci_alloc_consistent(instance->pdev, + sizeof(struct megasas_ctrl_info), &ci_h); + + if (!ci) { + printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n"); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0xFF; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info); + dcmd->opcode = MR_DCMD_CTRL_GET_INFO; + dcmd->sgl.sge32[0].phys_addr = ci_h; + dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info); + + if (!megasas_issue_polled(instance, cmd)) { + ret = 0; + memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); + } else { + ret = -1; + } + + pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), + ci, ci_h); + + megasas_return_cmd(instance, cmd); + return ret; +} + +/** + * megasas_issue_init_mfi - Initializes the FW + * @instance: Adapter soft state + * + * Issues the INIT MFI cmd + */ +static int +megasas_issue_init_mfi(struct megasas_instance *instance) +{ + u32 context; + + struct megasas_cmd *cmd; + + struct megasas_init_frame *init_frame; + struct megasas_init_queue_info *initq_info; + dma_addr_t init_frame_h; + dma_addr_t initq_info_h; + + /* + * Prepare a init frame. Note the init frame points to queue info + * structure. Each frame has SGL allocated after first 64 bytes. For + * this frame - since we don't need any SGL - we use SGL's space as + * queue info structure + * + * We will not get a NULL command below. We just created the pool. + */ + cmd = megasas_get_cmd(instance); + + init_frame = (struct megasas_init_frame *)cmd->frame; + initq_info = (struct megasas_init_queue_info *) + ((unsigned long)init_frame + 64); + + init_frame_h = cmd->frame_phys_addr; + initq_info_h = init_frame_h + 64; + + context = init_frame->context; + memset(init_frame, 0, MEGAMFI_FRAME_SIZE); + memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); + init_frame->context = context; + + initq_info->reply_queue_entries = instance->max_fw_cmds + 1; + initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h; + + initq_info->producer_index_phys_addr_lo = instance->producer_h; + initq_info->consumer_index_phys_addr_lo = instance->consumer_h; + + init_frame->cmd = MFI_CMD_INIT; + init_frame->cmd_status = 0xFF; + init_frame->queue_info_new_phys_addr_lo = initq_info_h; + + init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info); + + /* + * disable the intr before firing the init frame to FW + */ + instance->instancet->disable_intr(instance->reg_set); + + /* + * Issue the init frame in polled mode + */ + + if (megasas_issue_polled(instance, cmd)) { + printk(KERN_ERR "megasas: Failed to init firmware\n"); + megasas_return_cmd(instance, cmd); + goto fail_fw_init; + } + + megasas_return_cmd(instance, cmd); + + return 0; + +fail_fw_init: + return -EINVAL; +} + +static u32 +megasas_init_adapter_mfi(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *reg_set; + u32 context_sz; + u32 reply_q_sz; + + reg_set = instance->reg_set; + + /* + * Get various operational parameters from status register + */ + instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; + /* + * Reduce the max supported cmds by 1. This is to ensure that the + * reply_q_sz (1 more than the max cmd that driver may send) + * does not exceed max cmds that the FW can support + */ + instance->max_fw_cmds = instance->max_fw_cmds-1; + instance->max_mfi_cmds = instance->max_fw_cmds; + instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> + 0x10; + /* + * Create a pool of commands + */ + if (megasas_alloc_cmds(instance)) + goto fail_alloc_cmds; + + /* + * Allocate memory for reply queue. Length of reply queue should + * be _one_ more than the maximum commands handled by the firmware. + * + * Note: When FW completes commands, it places corresponding contex + * values in this circular reply queue. This circular queue is a fairly + * typical producer-consumer queue. FW is the producer (of completed + * commands) and the driver is the consumer. + */ + context_sz = sizeof(u32); + reply_q_sz = context_sz * (instance->max_fw_cmds + 1); + + instance->reply_queue = pci_alloc_consistent(instance->pdev, + reply_q_sz, + &instance->reply_queue_h); + + if (!instance->reply_queue) { + printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n"); + goto fail_reply_queue; + } + + if (megasas_issue_init_mfi(instance)) + goto fail_fw_init; + + instance->fw_support_ieee = 0; + instance->fw_support_ieee = + (instance->instancet->read_fw_status_reg(reg_set) & + 0x04000000); + + printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d", + instance->fw_support_ieee); + + if (instance->fw_support_ieee) + instance->flag_ieee = 1; + + return 0; + +fail_fw_init: + + pci_free_consistent(instance->pdev, reply_q_sz, + instance->reply_queue, instance->reply_queue_h); +fail_reply_queue: + megasas_free_cmds(instance); + +fail_alloc_cmds: + return 1; +} + +/** + * megasas_init_fw - Initializes the FW + * @instance: Adapter soft state + * + * This is the main function for initializing firmware + */ + +static int megasas_init_fw(struct megasas_instance *instance) +{ + u32 max_sectors_1; + u32 max_sectors_2; + u32 tmp_sectors, msix_enable; + struct megasas_register_set __iomem *reg_set; + struct megasas_ctrl_info *ctrl_info; + unsigned long bar_list; + int i; + + /* Find first memory bar */ + bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); + instance->bar = find_first_bit(&bar_list, sizeof(unsigned long)); + instance->base_addr = pci_resource_start(instance->pdev, instance->bar); + if (pci_request_selected_regions(instance->pdev, instance->bar, + "megasas: LSI")) { + printk(KERN_DEBUG "megasas: IO memory region busy!\n"); + return -EBUSY; + } + + instance->reg_set = ioremap_nocache(instance->base_addr, 8192); + + if (!instance->reg_set) { + printk(KERN_DEBUG "megasas: Failed to map IO mem\n"); + goto fail_ioremap; + } + + reg_set = instance->reg_set; + + switch (instance->pdev->device) { + case PCI_DEVICE_ID_LSI_FUSION: + case PCI_DEVICE_ID_LSI_INVADER: + instance->instancet = &megasas_instance_template_fusion; + break; + case PCI_DEVICE_ID_LSI_SAS1078R: + case PCI_DEVICE_ID_LSI_SAS1078DE: + instance->instancet = &megasas_instance_template_ppc; + break; + case PCI_DEVICE_ID_LSI_SAS1078GEN2: + case PCI_DEVICE_ID_LSI_SAS0079GEN2: + instance->instancet = &megasas_instance_template_gen2; + break; + case PCI_DEVICE_ID_LSI_SAS0073SKINNY: + case PCI_DEVICE_ID_LSI_SAS0071SKINNY: + instance->instancet = &megasas_instance_template_skinny; + break; + case PCI_DEVICE_ID_LSI_SAS1064R: + case PCI_DEVICE_ID_DELL_PERC5: + default: + instance->instancet = &megasas_instance_template_xscale; + break; + } + + /* + * We expect the FW state to be READY + */ + if (megasas_transition_to_ready(instance, 0)) + goto fail_ready_state; + + /* Check if MSI-X is supported while in ready state */ + msix_enable = (instance->instancet->read_fw_status_reg(reg_set) & + 0x4000000) >> 0x1a; + if (msix_enable && !msix_disable) { + /* Check max MSI-X vectors */ + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) { + instance->msix_vectors = (readl(&instance->reg_set-> + outbound_scratch_pad_2 + ) & 0x1F) + 1; + } else + instance->msix_vectors = 1; + /* Don't bother allocating more MSI-X vectors than cpus */ + instance->msix_vectors = min(instance->msix_vectors, + (unsigned int)num_online_cpus()); + for (i = 0; i < instance->msix_vectors; i++) + instance->msixentry[i].entry = i; + i = pci_enable_msix(instance->pdev, instance->msixentry, + instance->msix_vectors); + if (i >= 0) { + if (i) { + if (!pci_enable_msix(instance->pdev, + instance->msixentry, i)) + instance->msix_vectors = i; + else + instance->msix_vectors = 0; + } + } else + instance->msix_vectors = 0; + } + + /* Get operational params, sge flags, send init cmd to controller */ + if (instance->instancet->init_adapter(instance)) + goto fail_init_adapter; + + printk(KERN_ERR "megasas: INIT adapter done\n"); + + /** for passthrough + * the following function will get the PD LIST. + */ + + memset(instance->pd_list, 0 , + (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); + megasas_get_pd_list(instance); + + memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); + megasas_get_ld_list(instance); + + ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL); + + /* + * Compute the max allowed sectors per IO: The controller info has two + * limits on max sectors. Driver should use the minimum of these two. + * + * 1 << stripe_sz_ops.min = max sectors per strip + * + * Note that older firmwares ( < FW ver 30) didn't report information + * to calculate max_sectors_1. So the number ended up as zero always. + */ + tmp_sectors = 0; + if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) { + + max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * + ctrl_info->max_strips_per_io; + max_sectors_2 = ctrl_info->max_request_size; + + tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2); + instance->disableOnlineCtrlReset = + ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset; + } + + instance->max_sectors_per_req = instance->max_num_sge * + PAGE_SIZE / 512; + if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) + instance->max_sectors_per_req = tmp_sectors; + + kfree(ctrl_info); + + /* + * Setup tasklet for cmd completion + */ + + tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, + (unsigned long)instance); + + return 0; + +fail_init_adapter: +fail_ready_state: + iounmap(instance->reg_set); + + fail_ioremap: + pci_release_selected_regions(instance->pdev, instance->bar); + + return -EINVAL; +} + +/** + * megasas_release_mfi - Reverses the FW initialization + * @intance: Adapter soft state + */ +static void megasas_release_mfi(struct megasas_instance *instance) +{ + u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); + + if (instance->reply_queue) + pci_free_consistent(instance->pdev, reply_q_sz, + instance->reply_queue, instance->reply_queue_h); + + megasas_free_cmds(instance); + + iounmap(instance->reg_set); + + pci_release_selected_regions(instance->pdev, instance->bar); +} + +/** + * megasas_get_seq_num - Gets latest event sequence numbers + * @instance: Adapter soft state + * @eli: FW event log sequence numbers information + * + * FW maintains a log of all events in a non-volatile area. Upper layers would + * usually find out the latest sequence number of the events, the seq number at + * the boot etc. They would "read" all the events below the latest seq number + * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq + * number), they would subsribe to AEN (asynchronous event notification) and + * wait for the events to happen. + */ +static int +megasas_get_seq_num(struct megasas_instance *instance, + struct megasas_evt_log_info *eli) +{ + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct megasas_evt_log_info *el_info; + dma_addr_t el_info_h = 0; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + el_info = pci_alloc_consistent(instance->pdev, + sizeof(struct megasas_evt_log_info), + &el_info_h); + + if (!el_info) { + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + memset(el_info, 0, sizeof(*el_info)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0x0; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info); + dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO; + dcmd->sgl.sge32[0].phys_addr = el_info_h; + dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info); + + megasas_issue_blocked_cmd(instance, cmd); + + /* + * Copy the data back into callers buffer + */ + memcpy(eli, el_info, sizeof(struct megasas_evt_log_info)); + + pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), + el_info, el_info_h); + + megasas_return_cmd(instance, cmd); + + return 0; +} + +/** + * megasas_register_aen - Registers for asynchronous event notification + * @instance: Adapter soft state + * @seq_num: The starting sequence number + * @class_locale: Class of the event + * + * This function subscribes for AEN for events beyond the @seq_num. It requests + * to be notified if and only if the event is of type @class_locale + */ +static int +megasas_register_aen(struct megasas_instance *instance, u32 seq_num, + u32 class_locale_word) +{ + int ret_val; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + union megasas_evt_class_locale curr_aen; + union megasas_evt_class_locale prev_aen; + + /* + * If there an AEN pending already (aen_cmd), check if the + * class_locale of that pending AEN is inclusive of the new + * AEN request we currently have. If it is, then we don't have + * to do anything. In other words, whichever events the current + * AEN request is subscribing to, have already been subscribed + * to. + * + * If the old_cmd is _not_ inclusive, then we have to abort + * that command, form a class_locale that is superset of both + * old and current and re-issue to the FW + */ + + curr_aen.word = class_locale_word; + + if (instance->aen_cmd) { + + prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1]; + + /* + * A class whose enum value is smaller is inclusive of all + * higher values. If a PROGRESS (= -1) was previously + * registered, then a new registration requests for higher + * classes need not be sent to FW. They are automatically + * included. + * + * Locale numbers don't have such hierarchy. They are bitmap + * values + */ + if ((prev_aen.members.class <= curr_aen.members.class) && + !((prev_aen.members.locale & curr_aen.members.locale) ^ + curr_aen.members.locale)) { + /* + * Previously issued event registration includes + * current request. Nothing to do. + */ + return 0; + } else { + curr_aen.members.locale |= prev_aen.members.locale; + + if (prev_aen.members.class < curr_aen.members.class) + curr_aen.members.class = prev_aen.members.class; + + instance->aen_cmd->abort_aen = 1; + ret_val = megasas_issue_blocked_abort_cmd(instance, + instance-> + aen_cmd); + + if (ret_val) { + printk(KERN_DEBUG "megasas: Failed to abort " + "previous AEN command\n"); + return ret_val; + } + } + } + + cmd = megasas_get_cmd(instance); + + if (!cmd) + return -ENOMEM; + + dcmd = &cmd->frame->dcmd; + + memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); + + /* + * Prepare DCMD for aen registration + */ + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0x0; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + instance->last_seq_num = seq_num; + dcmd->data_xfer_len = sizeof(struct megasas_evt_detail); + dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT; + dcmd->mbox.w[0] = seq_num; + dcmd->mbox.w[1] = curr_aen.word; + dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h; + dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail); + + if (instance->aen_cmd != NULL) { + megasas_return_cmd(instance, cmd); + return 0; + } + + /* + * Store reference to the cmd used to register for AEN. When an + * application wants us to register for AEN, we have to abort this + * cmd and re-register with a new EVENT LOCALE supplied by that app + */ + instance->aen_cmd = cmd; + + /* + * Issue the aen registration frame + */ + instance->instancet->issue_dcmd(instance, cmd); + + return 0; +} + +/** + * megasas_start_aen - Subscribes to AEN during driver load time + * @instance: Adapter soft state + */ +static int megasas_start_aen(struct megasas_instance *instance) +{ + struct megasas_evt_log_info eli; + union megasas_evt_class_locale class_locale; + + /* + * Get the latest sequence number from FW + */ + memset(&eli, 0, sizeof(eli)); + + if (megasas_get_seq_num(instance, &eli)) + return -1; + + /* + * Register AEN with FW for latest sequence number plus 1 + */ + class_locale.members.reserved = 0; + class_locale.members.locale = MR_EVT_LOCALE_ALL; + class_locale.members.class = MR_EVT_CLASS_DEBUG; + + return megasas_register_aen(instance, eli.newest_seq_num + 1, + class_locale.word); +} + +/** + * megasas_io_attach - Attaches this driver to SCSI mid-layer + * @instance: Adapter soft state + */ +static int megasas_io_attach(struct megasas_instance *instance) +{ + struct Scsi_Host *host = instance->host; + + /* + * Export parameters required by SCSI mid-layer + */ + host->irq = instance->pdev->irq; + host->unique_id = instance->unique_id; + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { + host->can_queue = + instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; + } else + host->can_queue = + instance->max_fw_cmds - MEGASAS_INT_CMDS; + host->this_id = instance->init_id; + host->sg_tablesize = instance->max_num_sge; + + if (instance->fw_support_ieee) + instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; + + /* + * Check if the module parameter value for max_sectors can be used + */ + if (max_sectors && max_sectors < instance->max_sectors_per_req) + instance->max_sectors_per_req = max_sectors; + else { + if (max_sectors) { + if (((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS1078GEN2) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0079GEN2)) && + (max_sectors <= MEGASAS_MAX_SECTORS)) { + instance->max_sectors_per_req = max_sectors; + } else { + printk(KERN_INFO "megasas: max_sectors should be > 0" + "and <= %d (or < 1MB for GEN2 controller)\n", + instance->max_sectors_per_req); + } + } + } + + host->max_sectors = instance->max_sectors_per_req; + host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; + host->max_channel = MEGASAS_MAX_CHANNELS - 1; + host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; + host->max_lun = MEGASAS_MAX_LUN; + host->max_cmd_len = 16; + + /* Fusion only supports host reset */ + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) { + host->hostt->eh_device_reset_handler = NULL; + host->hostt->eh_bus_reset_handler = NULL; + } + + /* + * Notify the mid-layer about the new controller + */ + if (scsi_add_host(host, &instance->pdev->dev)) { + printk(KERN_DEBUG "megasas: scsi_add_host failed\n"); + return -ENODEV; + } + + /* + * Trigger SCSI to scan our drives + */ + scsi_scan_host(host); + return 0; +} + +static int +megasas_set_dma_mask(struct pci_dev *pdev) +{ + /* + * All our contollers are capable of performing 64-bit DMA + */ + if (IS_DMA64) { + if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { + + if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) + goto fail_set_dma_mask; + } + } else { + if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) + goto fail_set_dma_mask; + } + return 0; + +fail_set_dma_mask: + return 1; +} + +/** + * megasas_probe_one - PCI hotplug entry point + * @pdev: PCI device structure + * @id: PCI ids of supported hotplugged adapter + */ +static int __devinit +megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) +{ + int rval, pos, i, j; + struct Scsi_Host *host; + struct megasas_instance *instance; + u16 control = 0; + + /* Reset MSI-X in the kdump kernel */ + if (reset_devices) { + pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); + if (pos) { + pci_read_config_word(pdev, msi_control_reg(pos), + &control); + if (control & PCI_MSIX_FLAGS_ENABLE) { + dev_info(&pdev->dev, "resetting MSI-X\n"); + pci_write_config_word(pdev, + msi_control_reg(pos), + control & + ~PCI_MSIX_FLAGS_ENABLE); + } + } + } + + /* + * Announce PCI information + */ + printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", + pdev->vendor, pdev->device, pdev->subsystem_vendor, + pdev->subsystem_device); + + printk("bus %d:slot %d:func %d\n", + pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); + + /* + * PCI prepping: enable device set bus mastering and dma mask + */ + rval = pci_enable_device_mem(pdev); + + if (rval) { + return rval; + } + + pci_set_master(pdev); + + if (megasas_set_dma_mask(pdev)) + goto fail_set_dma_mask; + + host = scsi_host_alloc(&megasas_template, + sizeof(struct megasas_instance)); + + if (!host) { + printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n"); + goto fail_alloc_instance; + } + + instance = (struct megasas_instance *)host->hostdata; + memset(instance, 0, sizeof(*instance)); + atomic_set( &instance->fw_reset_no_pci_access, 0 ); + instance->pdev = pdev; + + switch (instance->pdev->device) { + case PCI_DEVICE_ID_LSI_FUSION: + case PCI_DEVICE_ID_LSI_INVADER: + { + struct fusion_context *fusion; + + instance->ctrl_context = + kzalloc(sizeof(struct fusion_context), GFP_KERNEL); + if (!instance->ctrl_context) { + printk(KERN_DEBUG "megasas: Failed to allocate " + "memory for Fusion context info\n"); + goto fail_alloc_dma_buf; + } + fusion = instance->ctrl_context; + INIT_LIST_HEAD(&fusion->cmd_pool); + spin_lock_init(&fusion->cmd_pool_lock); + } + break; + default: /* For all other supported controllers */ + + instance->producer = + pci_alloc_consistent(pdev, sizeof(u32), + &instance->producer_h); + instance->consumer = + pci_alloc_consistent(pdev, sizeof(u32), + &instance->consumer_h); + + if (!instance->producer || !instance->consumer) { + printk(KERN_DEBUG "megasas: Failed to allocate" + "memory for producer, consumer\n"); + goto fail_alloc_dma_buf; + } + + *instance->producer = 0; + *instance->consumer = 0; + break; + } + + megasas_poll_wait_aen = 0; + instance->flag_ieee = 0; + instance->ev = NULL; + instance->issuepend_done = 1; + instance->adprecovery = MEGASAS_HBA_OPERATIONAL; + megasas_poll_wait_aen = 0; + + instance->evt_detail = pci_alloc_consistent(pdev, + sizeof(struct + megasas_evt_detail), + &instance->evt_detail_h); + + if (!instance->evt_detail) { + printk(KERN_DEBUG "megasas: Failed to allocate memory for " + "event detail structure\n"); + goto fail_alloc_dma_buf; + } + + /* + * Initialize locks and queues + */ + INIT_LIST_HEAD(&instance->cmd_pool); + INIT_LIST_HEAD(&instance->internal_reset_pending_q); + + atomic_set(&instance->fw_outstanding,0); + + init_waitqueue_head(&instance->int_cmd_wait_q); + init_waitqueue_head(&instance->abort_cmd_wait_q); + + spin_lock_init(&instance->cmd_pool_lock); + spin_lock_init(&instance->hba_lock); + spin_lock_init(&instance->completion_lock); + spin_lock_init(&poll_aen_lock); + + mutex_init(&instance->aen_mutex); + mutex_init(&instance->reset_mutex); + + /* + * Initialize PCI related and misc parameters + */ + instance->host = host; + instance->unique_id = pdev->bus->number << 8 | pdev->devfn; + instance->init_id = MEGASAS_DEFAULT_INIT_ID; + + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { + instance->flag_ieee = 1; + sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); + } else + sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS); + + megasas_dbg_lvl = 0; + instance->flag = 0; + instance->unload = 1; + instance->last_time = 0; + instance->disableOnlineCtrlReset = 1; + + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) + INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); + else + INIT_WORK(&instance->work_init, process_fw_state_change_wq); + + /* + * Initialize MFI Firmware + */ + if (megasas_init_fw(instance)) + goto fail_init_mfi; + + /* + * Register IRQ + */ + if (instance->msix_vectors) { + for (i = 0 ; i < instance->msix_vectors; i++) { + instance->irq_context[i].instance = instance; + instance->irq_context[i].MSIxIndex = i; + if (request_irq(instance->msixentry[i].vector, + instance->instancet->service_isr, 0, + "megasas", + &instance->irq_context[i])) { + printk(KERN_DEBUG "megasas: Failed to " + "register IRQ for vector %d.\n", i); + for (j = 0 ; j < i ; j++) + free_irq( + instance->msixentry[j].vector, + &instance->irq_context[j]); + goto fail_irq; + } + } + } else { + instance->irq_context[0].instance = instance; + instance->irq_context[0].MSIxIndex = 0; + if (request_irq(pdev->irq, instance->instancet->service_isr, + IRQF_SHARED, "megasas", + &instance->irq_context[0])) { + printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); + goto fail_irq; + } + } + + instance->instancet->enable_intr(instance->reg_set); + + /* + * Store instance in PCI softstate + */ + pci_set_drvdata(pdev, instance); + + /* + * Add this controller to megasas_mgmt_info structure so that it + * can be exported to management applications + */ + megasas_mgmt_info.count++; + megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; + megasas_mgmt_info.max_index++; + + /* + * Register with SCSI mid-layer + */ + if (megasas_io_attach(instance)) + goto fail_io_attach; + + instance->unload = 0; + + /* + * Initiate AEN (Asynchronous Event Notification) + */ + if (megasas_start_aen(instance)) { + printk(KERN_DEBUG "megasas: start aen failed\n"); + goto fail_start_aen; + } + + return 0; + + fail_start_aen: + fail_io_attach: + megasas_mgmt_info.count--; + megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; + megasas_mgmt_info.max_index--; + + pci_set_drvdata(pdev, NULL); + instance->instancet->disable_intr(instance->reg_set); + if (instance->msix_vectors) + for (i = 0 ; i < instance->msix_vectors; i++) + free_irq(instance->msixentry[i].vector, + &instance->irq_context[i]); + else + free_irq(instance->pdev->irq, &instance->irq_context[0]); +fail_irq: + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) + megasas_release_fusion(instance); + else + megasas_release_mfi(instance); + fail_init_mfi: + if (instance->msix_vectors) + pci_disable_msix(instance->pdev); + fail_alloc_dma_buf: + if (instance->evt_detail) + pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), + instance->evt_detail, + instance->evt_detail_h); + + if (instance->producer) + pci_free_consistent(pdev, sizeof(u32), instance->producer, + instance->producer_h); + if (instance->consumer) + pci_free_consistent(pdev, sizeof(u32), instance->consumer, + instance->consumer_h); + scsi_host_put(host); + + fail_alloc_instance: + fail_set_dma_mask: + pci_disable_device(pdev); + + return -ENODEV; +} + +/** + * megasas_flush_cache - Requests FW to flush all its caches + * @instance: Adapter soft state + */ +static void megasas_flush_cache(struct megasas_instance *instance) +{ + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) + return; + + cmd = megasas_get_cmd(instance); + + if (!cmd) + return; + + dcmd = &cmd->frame->dcmd; + + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0x0; + dcmd->sge_count = 0; + dcmd->flags = MFI_FRAME_DIR_NONE; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = 0; + dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH; + dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; + + megasas_issue_blocked_cmd(instance, cmd); + + megasas_return_cmd(instance, cmd); + + return; +} + +/** + * megasas_shutdown_controller - Instructs FW to shutdown the controller + * @instance: Adapter soft state + * @opcode: Shutdown/Hibernate + */ +static void megasas_shutdown_controller(struct megasas_instance *instance, + u32 opcode) +{ + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) + return; + + cmd = megasas_get_cmd(instance); + + if (!cmd) + return; + + if (instance->aen_cmd) + megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd); + if (instance->map_update_cmd) + megasas_issue_blocked_abort_cmd(instance, + instance->map_update_cmd); + dcmd = &cmd->frame->dcmd; + + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0x0; + dcmd->sge_count = 0; + dcmd->flags = MFI_FRAME_DIR_NONE; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = 0; + dcmd->opcode = opcode; + + megasas_issue_blocked_cmd(instance, cmd); + + megasas_return_cmd(instance, cmd); + + return; +} + +#ifdef CONFIG_PM +/** + * megasas_suspend - driver suspend entry point + * @pdev: PCI device structure + * @state: PCI power state to suspend routine + */ +static int +megasas_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct Scsi_Host *host; + struct megasas_instance *instance; + int i; + + instance = pci_get_drvdata(pdev); + host = instance->host; + instance->unload = 1; + + megasas_flush_cache(instance); + megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); + + /* cancel the delayed work if this work still in queue */ + if (instance->ev != NULL) { + struct megasas_aen_event *ev = instance->ev; + cancel_delayed_work_sync( + (struct delayed_work *)&ev->hotplug_work); + instance->ev = NULL; + } + + tasklet_kill(&instance->isr_tasklet); + + pci_set_drvdata(instance->pdev, instance); + instance->instancet->disable_intr(instance->reg_set); + + if (instance->msix_vectors) + for (i = 0 ; i < instance->msix_vectors; i++) + free_irq(instance->msixentry[i].vector, + &instance->irq_context[i]); + else + free_irq(instance->pdev->irq, &instance->irq_context[0]); + if (instance->msix_vectors) + pci_disable_msix(instance->pdev); + + pci_save_state(pdev); + pci_disable_device(pdev); + + pci_set_power_state(pdev, pci_choose_state(pdev, state)); + + return 0; +} + +/** + * megasas_resume- driver resume entry point + * @pdev: PCI device structure + */ +static int +megasas_resume(struct pci_dev *pdev) +{ + int rval, i, j; + struct Scsi_Host *host; + struct megasas_instance *instance; + + instance = pci_get_drvdata(pdev); + host = instance->host; + pci_set_power_state(pdev, PCI_D0); + pci_enable_wake(pdev, PCI_D0, 0); + pci_restore_state(pdev); + + /* + * PCI prepping: enable device set bus mastering and dma mask + */ + rval = pci_enable_device_mem(pdev); + + if (rval) { + printk(KERN_ERR "megasas: Enable device failed\n"); + return rval; + } + + pci_set_master(pdev); + + if (megasas_set_dma_mask(pdev)) + goto fail_set_dma_mask; + + /* + * Initialize MFI Firmware + */ + + atomic_set(&instance->fw_outstanding, 0); + + /* + * We expect the FW state to be READY + */ + if (megasas_transition_to_ready(instance, 0)) + goto fail_ready_state; + + /* Now re-enable MSI-X */ + if (instance->msix_vectors) + pci_enable_msix(instance->pdev, instance->msixentry, + instance->msix_vectors); + + switch (instance->pdev->device) { + case PCI_DEVICE_ID_LSI_FUSION: + case PCI_DEVICE_ID_LSI_INVADER: + { + megasas_reset_reply_desc(instance); + if (megasas_ioc_init_fusion(instance)) { + megasas_free_cmds(instance); + megasas_free_cmds_fusion(instance); + goto fail_init_mfi; + } + if (!megasas_get_map_info(instance)) + megasas_sync_map_info(instance); + } + break; + default: + *instance->producer = 0; + *instance->consumer = 0; + if (megasas_issue_init_mfi(instance)) + goto fail_init_mfi; + break; + } + + tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, + (unsigned long)instance); + + /* + * Register IRQ + */ + if (instance->msix_vectors) { + for (i = 0 ; i < instance->msix_vectors; i++) { + instance->irq_context[i].instance = instance; + instance->irq_context[i].MSIxIndex = i; + if (request_irq(instance->msixentry[i].vector, + instance->instancet->service_isr, 0, + "megasas", + &instance->irq_context[i])) { + printk(KERN_DEBUG "megasas: Failed to " + "register IRQ for vector %d.\n", i); + for (j = 0 ; j < i ; j++) + free_irq( + instance->msixentry[j].vector, + &instance->irq_context[j]); + goto fail_irq; + } + } + } else { + instance->irq_context[0].instance = instance; + instance->irq_context[0].MSIxIndex = 0; + if (request_irq(pdev->irq, instance->instancet->service_isr, + IRQF_SHARED, "megasas", + &instance->irq_context[0])) { + printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); + goto fail_irq; + } + } + + instance->instancet->enable_intr(instance->reg_set); + instance->unload = 0; + + /* + * Initiate AEN (Asynchronous Event Notification) + */ + if (megasas_start_aen(instance)) + printk(KERN_ERR "megasas: Start AEN failed\n"); + + return 0; + +fail_irq: +fail_init_mfi: + if (instance->evt_detail) + pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), + instance->evt_detail, + instance->evt_detail_h); + + if (instance->producer) + pci_free_consistent(pdev, sizeof(u32), instance->producer, + instance->producer_h); + if (instance->consumer) + pci_free_consistent(pdev, sizeof(u32), instance->consumer, + instance->consumer_h); + scsi_host_put(host); + +fail_set_dma_mask: +fail_ready_state: + + pci_disable_device(pdev); + + return -ENODEV; +} +#else +#define megasas_suspend NULL +#define megasas_resume NULL +#endif + +/** + * megasas_detach_one - PCI hot"un"plug entry point + * @pdev: PCI device structure + */ +static void __devexit megasas_detach_one(struct pci_dev *pdev) +{ + int i; + struct Scsi_Host *host; + struct megasas_instance *instance; + struct fusion_context *fusion; + + instance = pci_get_drvdata(pdev); + instance->unload = 1; + host = instance->host; + fusion = instance->ctrl_context; + + scsi_remove_host(instance->host); + megasas_flush_cache(instance); + megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); + + /* cancel the delayed work if this work still in queue*/ + if (instance->ev != NULL) { + struct megasas_aen_event *ev = instance->ev; + cancel_delayed_work_sync( + (struct delayed_work *)&ev->hotplug_work); + instance->ev = NULL; + } + + tasklet_kill(&instance->isr_tasklet); + + /* + * Take the instance off the instance array. Note that we will not + * decrement the max_index. We let this array be sparse array + */ + for (i = 0; i < megasas_mgmt_info.max_index; i++) { + if (megasas_mgmt_info.instance[i] == instance) { + megasas_mgmt_info.count--; + megasas_mgmt_info.instance[i] = NULL; + + break; + } + } + + pci_set_drvdata(instance->pdev, NULL); + + instance->instancet->disable_intr(instance->reg_set); + + if (instance->msix_vectors) + for (i = 0 ; i < instance->msix_vectors; i++) + free_irq(instance->msixentry[i].vector, + &instance->irq_context[i]); + else + free_irq(instance->pdev->irq, &instance->irq_context[0]); + if (instance->msix_vectors) + pci_disable_msix(instance->pdev); + + switch (instance->pdev->device) { + case PCI_DEVICE_ID_LSI_FUSION: + case PCI_DEVICE_ID_LSI_INVADER: + megasas_release_fusion(instance); + for (i = 0; i < 2 ; i++) + if (fusion->ld_map[i]) + dma_free_coherent(&instance->pdev->dev, + fusion->map_sz, + fusion->ld_map[i], + fusion-> + ld_map_phys[i]); + kfree(instance->ctrl_context); + break; + default: + megasas_release_mfi(instance); + pci_free_consistent(pdev, + sizeof(struct megasas_evt_detail), + instance->evt_detail, + instance->evt_detail_h); + pci_free_consistent(pdev, sizeof(u32), + instance->producer, + instance->producer_h); + pci_free_consistent(pdev, sizeof(u32), + instance->consumer, + instance->consumer_h); + break; + } + + scsi_host_put(host); + + pci_set_drvdata(pdev, NULL); + + pci_disable_device(pdev); + + return; +} + +/** + * megasas_shutdown - Shutdown entry point + * @device: Generic device structure + */ +static void megasas_shutdown(struct pci_dev *pdev) +{ + int i; + struct megasas_instance *instance = pci_get_drvdata(pdev); + + instance->unload = 1; + megasas_flush_cache(instance); + megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); + instance->instancet->disable_intr(instance->reg_set); + if (instance->msix_vectors) + for (i = 0 ; i < instance->msix_vectors; i++) + free_irq(instance->msixentry[i].vector, + &instance->irq_context[i]); + else + free_irq(instance->pdev->irq, &instance->irq_context[0]); + if (instance->msix_vectors) + pci_disable_msix(instance->pdev); +} + +/** + * megasas_mgmt_open - char node "open" entry point + */ +static int megasas_mgmt_open(struct inode *inode, struct file *filep) +{ + /* + * Allow only those users with admin rights + */ + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + + return 0; +} + +/** + * megasas_mgmt_fasync - Async notifier registration from applications + * + * This function adds the calling process to a driver global queue. When an + * event occurs, SIGIO will be sent to all processes in this queue. + */ +static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) +{ + int rc; + + mutex_lock(&megasas_async_queue_mutex); + + rc = fasync_helper(fd, filep, mode, &megasas_async_queue); + + mutex_unlock(&megasas_async_queue_mutex); + + if (rc >= 0) { + /* For sanity check when we get ioctl */ + filep->private_data = filep; + return 0; + } + + printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); + + return rc; +} + +/** + * megasas_mgmt_poll - char node "poll" entry point + * */ +static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait) +{ + unsigned int mask; + unsigned long flags; + poll_wait(file, &megasas_poll_wait, wait); + spin_lock_irqsave(&poll_aen_lock, flags); + if (megasas_poll_wait_aen) + mask = (POLLIN | POLLRDNORM); + else + mask = 0; + spin_unlock_irqrestore(&poll_aen_lock, flags); + return mask; +} + +/** + * megasas_mgmt_fw_ioctl - Issues management ioctls to FW + * @instance: Adapter soft state + * @argp: User's ioctl packet + */ +static int +megasas_mgmt_fw_ioctl(struct megasas_instance *instance, + struct megasas_iocpacket __user * user_ioc, + struct megasas_iocpacket *ioc) +{ + struct megasas_sge32 *kern_sge32; + struct megasas_cmd *cmd; + void *kbuff_arr[MAX_IOCTL_SGE]; + dma_addr_t buf_handle = 0; + int error = 0, i; + void *sense = NULL; + dma_addr_t sense_handle; + unsigned long *sense_ptr; + + memset(kbuff_arr, 0, sizeof(kbuff_arr)); + + if (ioc->sge_count > MAX_IOCTL_SGE) { + printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n", + ioc->sge_count, MAX_IOCTL_SGE); + return -EINVAL; + } + + cmd = megasas_get_cmd(instance); + if (!cmd) { + printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n"); + return -ENOMEM; + } + + /* + * User's IOCTL packet has 2 frames (maximum). Copy those two + * frames into our cmd's frames. cmd->frame's context will get + * overwritten when we copy from user's frames. So set that value + * alone separately + */ + memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); + cmd->frame->hdr.context = cmd->index; + cmd->frame->hdr.pad_0 = 0; + cmd->frame->hdr.flags &= ~(MFI_FRAME_IEEE | MFI_FRAME_SGL64 | + MFI_FRAME_SENSE64); + + /* + * The management interface between applications and the fw uses + * MFI frames. E.g, RAID configuration changes, LD property changes + * etc are accomplishes through different kinds of MFI frames. The + * driver needs to care only about substituting user buffers with + * kernel buffers in SGLs. The location of SGL is embedded in the + * struct iocpacket itself. + */ + kern_sge32 = (struct megasas_sge32 *) + ((unsigned long)cmd->frame + ioc->sgl_off); + + /* + * For each user buffer, create a mirror buffer and copy in + */ + for (i = 0; i < ioc->sge_count; i++) { + if (!ioc->sgl[i].iov_len) + continue; + + kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, + ioc->sgl[i].iov_len, + &buf_handle, GFP_KERNEL); + if (!kbuff_arr[i]) { + printk(KERN_DEBUG "megasas: Failed to alloc " + "kernel SGL buffer for IOCTL \n"); + error = -ENOMEM; + goto out; + } + + /* + * We don't change the dma_coherent_mask, so + * pci_alloc_consistent only returns 32bit addresses + */ + kern_sge32[i].phys_addr = (u32) buf_handle; + kern_sge32[i].length = ioc->sgl[i].iov_len; + + /* + * We created a kernel buffer corresponding to the + * user buffer. Now copy in from the user buffer + */ + if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, + (u32) (ioc->sgl[i].iov_len))) { + error = -EFAULT; + goto out; + } + } + + if (ioc->sense_len) { + sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, + &sense_handle, GFP_KERNEL); + if (!sense) { + error = -ENOMEM; + goto out; + } + + sense_ptr = + (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); + *sense_ptr = sense_handle; + } + + /* + * Set the sync_cmd flag so that the ISR knows not to complete this + * cmd to the SCSI mid-layer + */ + cmd->sync_cmd = 1; + megasas_issue_blocked_cmd(instance, cmd); + cmd->sync_cmd = 0; + + /* + * copy out the kernel buffers to user buffers + */ + for (i = 0; i < ioc->sge_count; i++) { + if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], + ioc->sgl[i].iov_len)) { + error = -EFAULT; + goto out; + } + } + + /* + * copy out the sense + */ + if (ioc->sense_len) { + /* + * sense_ptr points to the location that has the user + * sense buffer address + */ + sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + + ioc->sense_off); + + if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), + sense, ioc->sense_len)) { + printk(KERN_ERR "megasas: Failed to copy out to user " + "sense data\n"); + error = -EFAULT; + goto out; + } + } + + /* + * copy the status codes returned by the fw + */ + if (copy_to_user(&user_ioc->frame.hdr.cmd_status, + &cmd->frame->hdr.cmd_status, sizeof(u8))) { + printk(KERN_DEBUG "megasas: Error copying out cmd_status\n"); + error = -EFAULT; + } + + out: + if (sense) { + dma_free_coherent(&instance->pdev->dev, ioc->sense_len, + sense, sense_handle); + } + + for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) { + dma_free_coherent(&instance->pdev->dev, + kern_sge32[i].length, + kbuff_arr[i], kern_sge32[i].phys_addr); + } + + megasas_return_cmd(instance, cmd); + return error; +} + +static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) +{ + struct megasas_iocpacket __user *user_ioc = + (struct megasas_iocpacket __user *)arg; + struct megasas_iocpacket *ioc; + struct megasas_instance *instance; + int error; + int i; + unsigned long flags; + u32 wait_time = MEGASAS_RESET_WAIT_TIME; + + ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); + if (!ioc) + return -ENOMEM; + + if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { + error = -EFAULT; + goto out_kfree_ioc; + } + + instance = megasas_lookup_instance(ioc->host_no); + if (!instance) { + error = -ENODEV; + goto out_kfree_ioc; + } + + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { + printk(KERN_ERR "Controller in crit error\n"); + error = -ENODEV; + goto out_kfree_ioc; + } + + if (instance->unload == 1) { + error = -ENODEV; + goto out_kfree_ioc; + } + + /* + * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds + */ + if (down_interruptible(&instance->ioctl_sem)) { + error = -ERESTARTSYS; + goto out_kfree_ioc; + } + + for (i = 0; i < wait_time; i++) { + + spin_lock_irqsave(&instance->hba_lock, flags); + if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { + spin_unlock_irqrestore(&instance->hba_lock, flags); + break; + } + spin_unlock_irqrestore(&instance->hba_lock, flags); + + if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { + printk(KERN_NOTICE "megasas: waiting" + "for controller reset to finish\n"); + } + + msleep(1000); + } + + spin_lock_irqsave(&instance->hba_lock, flags); + if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { + spin_unlock_irqrestore(&instance->hba_lock, flags); + + printk(KERN_ERR "megaraid_sas: timed out while" + "waiting for HBA to recover\n"); + error = -ENODEV; + goto out_kfree_ioc; + } + spin_unlock_irqrestore(&instance->hba_lock, flags); + + error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); + up(&instance->ioctl_sem); + + out_kfree_ioc: + kfree(ioc); + return error; +} + +static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) +{ + struct megasas_instance *instance; + struct megasas_aen aen; + int error; + int i; + unsigned long flags; + u32 wait_time = MEGASAS_RESET_WAIT_TIME; + + if (file->private_data != file) { + printk(KERN_DEBUG "megasas: fasync_helper was not " + "called first\n"); + return -EINVAL; + } + + if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) + return -EFAULT; + + instance = megasas_lookup_instance(aen.host_no); + + if (!instance) + return -ENODEV; + + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { + return -ENODEV; + } + + if (instance->unload == 1) { + return -ENODEV; + } + + for (i = 0; i < wait_time; i++) { + + spin_lock_irqsave(&instance->hba_lock, flags); + if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { + spin_unlock_irqrestore(&instance->hba_lock, + flags); + break; + } + + spin_unlock_irqrestore(&instance->hba_lock, flags); + + if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { + printk(KERN_NOTICE "megasas: waiting for" + "controller reset to finish\n"); + } + + msleep(1000); + } + + spin_lock_irqsave(&instance->hba_lock, flags); + if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { + spin_unlock_irqrestore(&instance->hba_lock, flags); + printk(KERN_ERR "megaraid_sas: timed out while waiting" + "for HBA to recover.\n"); + return -ENODEV; + } + spin_unlock_irqrestore(&instance->hba_lock, flags); + + mutex_lock(&instance->aen_mutex); + error = megasas_register_aen(instance, aen.seq_num, + aen.class_locale_word); + mutex_unlock(&instance->aen_mutex); + return error; +} + +/** + * megasas_mgmt_ioctl - char node ioctl entry point + */ +static long +megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + switch (cmd) { + case MEGASAS_IOC_FIRMWARE: + return megasas_mgmt_ioctl_fw(file, arg); + + case MEGASAS_IOC_GET_AEN: + return megasas_mgmt_ioctl_aen(file, arg); + } + + return -ENOTTY; +} + +#ifdef CONFIG_COMPAT +static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) +{ + struct compat_megasas_iocpacket __user *cioc = + (struct compat_megasas_iocpacket __user *)arg; + struct megasas_iocpacket __user *ioc = + compat_alloc_user_space(sizeof(struct megasas_iocpacket)); + int i; + int error = 0; + compat_uptr_t ptr; + + if (clear_user(ioc, sizeof(*ioc))) + return -EFAULT; + + if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || + copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || + copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || + copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || + copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || + copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) + return -EFAULT; + + /* + * The sense_ptr is used in megasas_mgmt_fw_ioctl only when + * sense_len is not null, so prepare the 64bit value under + * the same condition. + */ + if (ioc->sense_len) { + void __user **sense_ioc_ptr = + (void __user **)(ioc->frame.raw + ioc->sense_off); + compat_uptr_t *sense_cioc_ptr = + (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off); + if (get_user(ptr, sense_cioc_ptr) || + put_user(compat_ptr(ptr), sense_ioc_ptr)) + return -EFAULT; + } + + for (i = 0; i < MAX_IOCTL_SGE; i++) { + if (get_user(ptr, &cioc->sgl[i].iov_base) || + put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || + copy_in_user(&ioc->sgl[i].iov_len, + &cioc->sgl[i].iov_len, sizeof(compat_size_t))) + return -EFAULT; + } + + error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); + + if (copy_in_user(&cioc->frame.hdr.cmd_status, + &ioc->frame.hdr.cmd_status, sizeof(u8))) { + printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); + return -EFAULT; + } + return error; +} + +static long +megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) +{ + switch (cmd) { + case MEGASAS_IOC_FIRMWARE32: + return megasas_mgmt_compat_ioctl_fw(file, arg); + case MEGASAS_IOC_GET_AEN: + return megasas_mgmt_ioctl_aen(file, arg); + } + + return -ENOTTY; +} +#endif + +/* + * File operations structure for management interface + */ +static const struct file_operations megasas_mgmt_fops = { + .owner = THIS_MODULE, + .open = megasas_mgmt_open, + .fasync = megasas_mgmt_fasync, + .unlocked_ioctl = megasas_mgmt_ioctl, + .poll = megasas_mgmt_poll, +#ifdef CONFIG_COMPAT + .compat_ioctl = megasas_mgmt_compat_ioctl, +#endif + .llseek = noop_llseek, +}; + +/* + * PCI hotplug support registration structure + */ +static struct pci_driver megasas_pci_driver = { + + .name = "megaraid_sas", + .id_table = megasas_pci_table, + .probe = megasas_probe_one, + .remove = __devexit_p(megasas_detach_one), + .suspend = megasas_suspend, + .resume = megasas_resume, + .shutdown = megasas_shutdown, +}; + +/* + * Sysfs driver attributes + */ +static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) +{ + return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", + MEGASAS_VERSION); +} + +static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); + +static ssize_t +megasas_sysfs_show_release_date(struct device_driver *dd, char *buf) +{ + return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", + MEGASAS_RELDATE); +} + +static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, + NULL); + +static ssize_t +megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf) +{ + return sprintf(buf, "%u\n", support_poll_for_event); +} + +static DRIVER_ATTR(support_poll_for_event, S_IRUGO, + megasas_sysfs_show_support_poll_for_event, NULL); + + static ssize_t +megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf) +{ + return sprintf(buf, "%u\n", support_device_change); +} + +static DRIVER_ATTR(support_device_change, S_IRUGO, + megasas_sysfs_show_support_device_change, NULL); + +static ssize_t +megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) +{ + return sprintf(buf, "%u\n", megasas_dbg_lvl); +} + +static ssize_t +megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) +{ + int retval = count; + if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){ + printk(KERN_ERR "megasas: could not set dbg_lvl\n"); + retval = -EINVAL; + } + return retval; +} + +static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl, + megasas_sysfs_set_dbg_lvl); + +static void +megasas_aen_polling(struct work_struct *work) +{ + struct megasas_aen_event *ev = + container_of(work, struct megasas_aen_event, hotplug_work); + struct megasas_instance *instance = ev->instance; + union megasas_evt_class_locale class_locale; + struct Scsi_Host *host; + struct scsi_device *sdev1; + u16 pd_index = 0; + u16 ld_index = 0; + int i, j, doscan = 0; + u32 seq_num; + int error; + + if (!instance) { + printk(KERN_ERR "invalid instance!\n"); + kfree(ev); + return; + } + instance->ev = NULL; + host = instance->host; + if (instance->evt_detail) { + + switch (instance->evt_detail->code) { + case MR_EVT_PD_INSERTED: + if (megasas_get_pd_list(instance) == 0) { + for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { + for (j = 0; + j < MEGASAS_MAX_DEV_PER_CHANNEL; + j++) { + + pd_index = + (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; + + sdev1 = + scsi_device_lookup(host, i, j, 0); + + if (instance->pd_list[pd_index].driveState + == MR_PD_STATE_SYSTEM) { + if (!sdev1) { + scsi_add_device(host, i, j, 0); + } + + if (sdev1) + scsi_device_put(sdev1); + } + } + } + } + doscan = 0; + break; + + case MR_EVT_PD_REMOVED: + if (megasas_get_pd_list(instance) == 0) { + megasas_get_pd_list(instance); + for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { + for (j = 0; + j < MEGASAS_MAX_DEV_PER_CHANNEL; + j++) { + + pd_index = + (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; + + sdev1 = + scsi_device_lookup(host, i, j, 0); + + if (instance->pd_list[pd_index].driveState + == MR_PD_STATE_SYSTEM) { + if (sdev1) { + scsi_device_put(sdev1); + } + } else { + if (sdev1) { + scsi_remove_device(sdev1); + scsi_device_put(sdev1); + } + } + } + } + } + doscan = 0; + break; + + case MR_EVT_LD_OFFLINE: + case MR_EVT_CFG_CLEARED: + case MR_EVT_LD_DELETED: + megasas_get_ld_list(instance); + for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { + for (j = 0; + j < MEGASAS_MAX_DEV_PER_CHANNEL; + j++) { + + ld_index = + (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; + + sdev1 = scsi_device_lookup(host, + i + MEGASAS_MAX_LD_CHANNELS, + j, + 0); + + if (instance->ld_ids[ld_index] != 0xff) { + if (sdev1) { + scsi_device_put(sdev1); + } + } else { + if (sdev1) { + scsi_remove_device(sdev1); + scsi_device_put(sdev1); + } + } + } + } + doscan = 0; + break; + case MR_EVT_LD_CREATED: + megasas_get_ld_list(instance); + for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { + for (j = 0; + j < MEGASAS_MAX_DEV_PER_CHANNEL; + j++) { + ld_index = + (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; + + sdev1 = scsi_device_lookup(host, + i+MEGASAS_MAX_LD_CHANNELS, + j, 0); + + if (instance->ld_ids[ld_index] != + 0xff) { + if (!sdev1) { + scsi_add_device(host, + i + 2, + j, 0); + } + } + if (sdev1) { + scsi_device_put(sdev1); + } + } + } + doscan = 0; + break; + case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: + case MR_EVT_FOREIGN_CFG_IMPORTED: + case MR_EVT_LD_STATE_CHANGE: + doscan = 1; + break; + default: + doscan = 0; + break; + } + } else { + printk(KERN_ERR "invalid evt_detail!\n"); + kfree(ev); + return; + } + + if (doscan) { + printk(KERN_INFO "scanning ...\n"); + megasas_get_pd_list(instance); + for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { + for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { + pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; + sdev1 = scsi_device_lookup(host, i, j, 0); + if (instance->pd_list[pd_index].driveState == + MR_PD_STATE_SYSTEM) { + if (!sdev1) { + scsi_add_device(host, i, j, 0); + } + if (sdev1) + scsi_device_put(sdev1); + } else { + if (sdev1) { + scsi_remove_device(sdev1); + scsi_device_put(sdev1); + } + } + } + } + + megasas_get_ld_list(instance); + for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { + for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { + ld_index = + (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; + + sdev1 = scsi_device_lookup(host, + i+MEGASAS_MAX_LD_CHANNELS, j, 0); + if (instance->ld_ids[ld_index] != 0xff) { + if (!sdev1) { + scsi_add_device(host, + i+2, + j, 0); + } else { + scsi_device_put(sdev1); + } + } else { + if (sdev1) { + scsi_remove_device(sdev1); + scsi_device_put(sdev1); + } + } + } + } + } + + if ( instance->aen_cmd != NULL ) { + kfree(ev); + return ; + } + + seq_num = instance->evt_detail->seq_num + 1; + + /* Register AEN with FW for latest sequence number plus 1 */ + class_locale.members.reserved = 0; + class_locale.members.locale = MR_EVT_LOCALE_ALL; + class_locale.members.class = MR_EVT_CLASS_DEBUG; + mutex_lock(&instance->aen_mutex); + error = megasas_register_aen(instance, seq_num, + class_locale.word); + mutex_unlock(&instance->aen_mutex); + + if (error) + printk(KERN_ERR "register aen failed error %x\n", error); + + kfree(ev); +} + +/** + * megasas_init - Driver load entry point + */ +static int __init megasas_init(void) +{ + int rval; + + /* + * Announce driver version and other information + */ + printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION, + MEGASAS_EXT_VERSION); + + support_poll_for_event = 2; + support_device_change = 1; + + memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); + + /* + * Register character device node + */ + rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); + + if (rval < 0) { + printk(KERN_DEBUG "megasas: failed to open device node\n"); + return rval; + } + + megasas_mgmt_majorno = rval; + + /* + * Register ourselves as PCI hotplug module + */ + rval = pci_register_driver(&megasas_pci_driver); + + if (rval) { + printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n"); + goto err_pcidrv; + } + + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_version); + if (rval) + goto err_dcf_attr_ver; + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_release_date); + if (rval) + goto err_dcf_rel_date; + + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_support_poll_for_event); + if (rval) + goto err_dcf_support_poll_for_event; + + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_dbg_lvl); + if (rval) + goto err_dcf_dbg_lvl; + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_support_device_change); + if (rval) + goto err_dcf_support_device_change; + + return rval; + +err_dcf_support_device_change: + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_dbg_lvl); +err_dcf_dbg_lvl: + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_support_poll_for_event); + +err_dcf_support_poll_for_event: + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_release_date); + +err_dcf_rel_date: + driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); +err_dcf_attr_ver: + pci_unregister_driver(&megasas_pci_driver); +err_pcidrv: + unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); + return rval; +} + +/** + * megasas_exit - Driver unload entry point + */ +static void __exit megasas_exit(void) +{ + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_dbg_lvl); + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_support_poll_for_event); + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_support_device_change); + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_release_date); + driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); + + pci_unregister_driver(&megasas_pci_driver); + unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); +} + +module_init(megasas_init); +module_exit(megasas_exit); diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c b/drivers/scsi/megaraid/megaraid_sas_fp.c new file mode 100644 index 00000000..294abb0d --- /dev/null +++ b/drivers/scsi/megaraid/megaraid_sas_fp.c @@ -0,0 +1,526 @@ +/* + * Linux MegaRAID driver for SAS based RAID controllers + * + * Copyright (c) 2009-2011 LSI Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * FILE: megaraid_sas_fp.c + * + * Authors: LSI Corporation + * Sumant Patro + * Varad Talamacki + * Manoj Jose + * + * Send feedback to: <megaraidlinux@lsi.com> + * + * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 + * ATTN: Linuxraid + */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/list.h> +#include <linux/moduleparam.h> +#include <linux/module.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/uio.h> +#include <linux/uaccess.h> +#include <linux/fs.h> +#include <linux/compat.h> +#include <linux/blkdev.h> +#include <linux/poll.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> + +#include "megaraid_sas_fusion.h" +#include "megaraid_sas.h" +#include <asm/div64.h> + +#define ABS_DIFF(a, b) (((a) > (b)) ? ((a) - (b)) : ((b) - (a))) +#define MR_LD_STATE_OPTIMAL 3 +#define FALSE 0 +#define TRUE 1 + +/* Prototypes */ +void +mr_update_load_balance_params(struct MR_FW_RAID_MAP_ALL *map, + struct LD_LOAD_BALANCE_INFO *lbInfo); + +u32 mega_mod64(u64 dividend, u32 divisor) +{ + u64 d; + u32 remainder; + + if (!divisor) + printk(KERN_ERR "megasas : DIVISOR is zero, in div fn\n"); + d = dividend; + remainder = do_div(d, divisor); + return remainder; +} + +/** + * @param dividend : Dividend + * @param divisor : Divisor + * + * @return quotient + **/ +u64 mega_div64_32(uint64_t dividend, uint32_t divisor) +{ + u32 remainder; + u64 d; + + if (!divisor) + printk(KERN_ERR "megasas : DIVISOR is zero in mod fn\n"); + + d = dividend; + remainder = do_div(d, divisor); + + return d; +} + +struct MR_LD_RAID *MR_LdRaidGet(u32 ld, struct MR_FW_RAID_MAP_ALL *map) +{ + return &map->raidMap.ldSpanMap[ld].ldRaid; +} + +static struct MR_SPAN_BLOCK_INFO *MR_LdSpanInfoGet(u32 ld, + struct MR_FW_RAID_MAP_ALL + *map) +{ + return &map->raidMap.ldSpanMap[ld].spanBlock[0]; +} + +static u8 MR_LdDataArmGet(u32 ld, u32 armIdx, struct MR_FW_RAID_MAP_ALL *map) +{ + return map->raidMap.ldSpanMap[ld].dataArmMap[armIdx]; +} + +static u16 MR_ArPdGet(u32 ar, u32 arm, struct MR_FW_RAID_MAP_ALL *map) +{ + return map->raidMap.arMapInfo[ar].pd[arm]; +} + +static u16 MR_LdSpanArrayGet(u32 ld, u32 span, struct MR_FW_RAID_MAP_ALL *map) +{ + return map->raidMap.ldSpanMap[ld].spanBlock[span].span.arrayRef; +} + +static u16 MR_PdDevHandleGet(u32 pd, struct MR_FW_RAID_MAP_ALL *map) +{ + return map->raidMap.devHndlInfo[pd].curDevHdl; +} + +u16 MR_GetLDTgtId(u32 ld, struct MR_FW_RAID_MAP_ALL *map) +{ + return map->raidMap.ldSpanMap[ld].ldRaid.targetId; +} + +u16 MR_TargetIdToLdGet(u32 ldTgtId, struct MR_FW_RAID_MAP_ALL *map) +{ + return map->raidMap.ldTgtIdToLd[ldTgtId]; +} + +static struct MR_LD_SPAN *MR_LdSpanPtrGet(u32 ld, u32 span, + struct MR_FW_RAID_MAP_ALL *map) +{ + return &map->raidMap.ldSpanMap[ld].spanBlock[span].span; +} + +/* + * This function will validate Map info data provided by FW + */ +u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map, + struct LD_LOAD_BALANCE_INFO *lbInfo) +{ + struct MR_FW_RAID_MAP *pFwRaidMap = &map->raidMap; + + if (pFwRaidMap->totalSize != + (sizeof(struct MR_FW_RAID_MAP) -sizeof(struct MR_LD_SPAN_MAP) + + (sizeof(struct MR_LD_SPAN_MAP) *pFwRaidMap->ldCount))) { + printk(KERN_ERR "megasas: map info structure size 0x%x is not matching with ld count\n", + (unsigned int)((sizeof(struct MR_FW_RAID_MAP) - + sizeof(struct MR_LD_SPAN_MAP)) + + (sizeof(struct MR_LD_SPAN_MAP) * + pFwRaidMap->ldCount))); + printk(KERN_ERR "megasas: span map %x, pFwRaidMap->totalSize " + ": %x\n", (unsigned int)sizeof(struct MR_LD_SPAN_MAP), + pFwRaidMap->totalSize); + return 0; + } + + mr_update_load_balance_params(map, lbInfo); + + return 1; +} + +u32 MR_GetSpanBlock(u32 ld, u64 row, u64 *span_blk, + struct MR_FW_RAID_MAP_ALL *map, int *div_error) +{ + struct MR_SPAN_BLOCK_INFO *pSpanBlock = MR_LdSpanInfoGet(ld, map); + struct MR_QUAD_ELEMENT *quad; + struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map); + u32 span, j; + + for (span = 0; span < raid->spanDepth; span++, pSpanBlock++) { + + for (j = 0; j < pSpanBlock->block_span_info.noElements; j++) { + quad = &pSpanBlock->block_span_info.quad[j]; + + if (quad->diff == 0) { + *div_error = 1; + return span; + } + if (quad->logStart <= row && row <= quad->logEnd && + (mega_mod64(row-quad->logStart, quad->diff)) == 0) { + if (span_blk != NULL) { + u64 blk, debugBlk; + blk = + mega_div64_32( + (row-quad->logStart), + quad->diff); + debugBlk = blk; + + blk = (blk + quad->offsetInSpan) << + raid->stripeShift; + *span_blk = blk; + } + return span; + } + } + } + return span; +} + +/* +****************************************************************************** +* +* This routine calculates the arm, span and block for the specified stripe and +* reference in stripe. +* +* Inputs : +* +* ld - Logical drive number +* stripRow - Stripe number +* stripRef - Reference in stripe +* +* Outputs : +* +* span - Span number +* block - Absolute Block number in the physical disk +*/ +u8 MR_GetPhyParams(struct megasas_instance *instance, u32 ld, u64 stripRow, + u16 stripRef, u64 *pdBlock, u16 *pDevHandle, + struct RAID_CONTEXT *pRAID_Context, + struct MR_FW_RAID_MAP_ALL *map) +{ + struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map); + u32 pd, arRef; + u8 physArm, span; + u64 row; + u8 retval = TRUE; + int error_code = 0; + + row = mega_div64_32(stripRow, raid->rowDataSize); + + if (raid->level == 6) { + /* logical arm within row */ + u32 logArm = mega_mod64(stripRow, raid->rowDataSize); + u32 rowMod, armQ, arm; + + if (raid->rowSize == 0) + return FALSE; + /* get logical row mod */ + rowMod = mega_mod64(row, raid->rowSize); + armQ = raid->rowSize-1-rowMod; /* index of Q drive */ + arm = armQ+1+logArm; /* data always logically follows Q */ + if (arm >= raid->rowSize) /* handle wrap condition */ + arm -= raid->rowSize; + physArm = (u8)arm; + } else { + if (raid->modFactor == 0) + return FALSE; + physArm = MR_LdDataArmGet(ld, mega_mod64(stripRow, + raid->modFactor), + map); + } + + if (raid->spanDepth == 1) { + span = 0; + *pdBlock = row << raid->stripeShift; + } else { + span = (u8)MR_GetSpanBlock(ld, row, pdBlock, map, &error_code); + if (error_code == 1) + return FALSE; + } + + /* Get the array on which this span is present */ + arRef = MR_LdSpanArrayGet(ld, span, map); + pd = MR_ArPdGet(arRef, physArm, map); /* Get the pd */ + + if (pd != MR_PD_INVALID) + /* Get dev handle from Pd. */ + *pDevHandle = MR_PdDevHandleGet(pd, map); + else { + *pDevHandle = MR_PD_INVALID; /* set dev handle as invalid. */ + if ((raid->level >= 5) && + ((instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER && + raid->regTypeReqOnRead != REGION_TYPE_UNUSED))) + pRAID_Context->regLockFlags = REGION_TYPE_EXCLUSIVE; + else if (raid->level == 1) { + /* Get alternate Pd. */ + pd = MR_ArPdGet(arRef, physArm + 1, map); + if (pd != MR_PD_INVALID) + /* Get dev handle from Pd */ + *pDevHandle = MR_PdDevHandleGet(pd, map); + } + } + + *pdBlock += stripRef + MR_LdSpanPtrGet(ld, span, map)->startBlk; + pRAID_Context->spanArm = (span << RAID_CTX_SPANARM_SPAN_SHIFT) | + physArm; + return retval; +} + +/* +****************************************************************************** +* +* MR_BuildRaidContext function +* +* This function will initiate command processing. The start/end row and strip +* information is calculated then the lock is acquired. +* This function will return 0 if region lock was acquired OR return num strips +*/ +u8 +MR_BuildRaidContext(struct megasas_instance *instance, + struct IO_REQUEST_INFO *io_info, + struct RAID_CONTEXT *pRAID_Context, + struct MR_FW_RAID_MAP_ALL *map) +{ + struct MR_LD_RAID *raid; + u32 ld, stripSize, stripe_mask; + u64 endLba, endStrip, endRow, start_row, start_strip; + u64 regStart; + u32 regSize; + u8 num_strips, numRows; + u16 ref_in_start_stripe, ref_in_end_stripe; + u64 ldStartBlock; + u32 numBlocks, ldTgtId; + u8 isRead; + u8 retval = 0; + + ldStartBlock = io_info->ldStartBlock; + numBlocks = io_info->numBlocks; + ldTgtId = io_info->ldTgtId; + isRead = io_info->isRead; + + ld = MR_TargetIdToLdGet(ldTgtId, map); + raid = MR_LdRaidGet(ld, map); + + stripSize = 1 << raid->stripeShift; + stripe_mask = stripSize-1; + /* + * calculate starting row and stripe, and number of strips and rows + */ + start_strip = ldStartBlock >> raid->stripeShift; + ref_in_start_stripe = (u16)(ldStartBlock & stripe_mask); + endLba = ldStartBlock + numBlocks - 1; + ref_in_end_stripe = (u16)(endLba & stripe_mask); + endStrip = endLba >> raid->stripeShift; + num_strips = (u8)(endStrip - start_strip + 1); /* End strip */ + if (raid->rowDataSize == 0) + return FALSE; + start_row = mega_div64_32(start_strip, raid->rowDataSize); + endRow = mega_div64_32(endStrip, raid->rowDataSize); + numRows = (u8)(endRow - start_row + 1); + + /* + * calculate region info. + */ + + /* assume region is at the start of the first row */ + regStart = start_row << raid->stripeShift; + /* assume this IO needs the full row - we'll adjust if not true */ + regSize = stripSize; + + /* If IO spans more than 1 strip, fp is not possible + FP is not possible for writes on non-0 raid levels + FP is not possible if LD is not capable */ + if (num_strips > 1 || (!isRead && raid->level != 0) || + !raid->capability.fpCapable) { + io_info->fpOkForIo = FALSE; + } else { + io_info->fpOkForIo = TRUE; + } + + if (numRows == 1) { + /* single-strip IOs can always lock only the data needed */ + if (num_strips == 1) { + regStart += ref_in_start_stripe; + regSize = numBlocks; + } + /* multi-strip IOs always need to full stripe locked */ + } else { + if (start_strip == (start_row + 1) * raid->rowDataSize - 1) { + /* If the start strip is the last in the start row */ + regStart += ref_in_start_stripe; + regSize = stripSize - ref_in_start_stripe; + /* initialize count to sectors from startref to end + of strip */ + } + + if (numRows > 2) + /* Add complete rows in the middle of the transfer */ + regSize += (numRows-2) << raid->stripeShift; + + /* if IO ends within first strip of last row */ + if (endStrip == endRow*raid->rowDataSize) + regSize += ref_in_end_stripe+1; + else + regSize += stripSize; + } + + pRAID_Context->timeoutValue = map->raidMap.fpPdIoTimeoutSec; + if (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) + pRAID_Context->regLockFlags = (isRead) ? + raid->regTypeReqOnRead : raid->regTypeReqOnWrite; + else + pRAID_Context->regLockFlags = (isRead) ? + REGION_TYPE_SHARED_READ : raid->regTypeReqOnWrite; + pRAID_Context->VirtualDiskTgtId = raid->targetId; + pRAID_Context->regLockRowLBA = regStart; + pRAID_Context->regLockLength = regSize; + pRAID_Context->configSeqNum = raid->seqNum; + + /*Get Phy Params only if FP capable, or else leave it to MR firmware + to do the calculation.*/ + if (io_info->fpOkForIo) { + retval = MR_GetPhyParams(instance, ld, start_strip, + ref_in_start_stripe, + &io_info->pdBlock, + &io_info->devHandle, pRAID_Context, + map); + /* If IO on an invalid Pd, then FP i snot possible */ + if (io_info->devHandle == MR_PD_INVALID) + io_info->fpOkForIo = FALSE; + return retval; + } else if (isRead) { + uint stripIdx; + for (stripIdx = 0; stripIdx < num_strips; stripIdx++) { + if (!MR_GetPhyParams(instance, ld, + start_strip + stripIdx, + ref_in_start_stripe, + &io_info->pdBlock, + &io_info->devHandle, + pRAID_Context, map)) + return TRUE; + } + } + return TRUE; +} + +void +mr_update_load_balance_params(struct MR_FW_RAID_MAP_ALL *map, + struct LD_LOAD_BALANCE_INFO *lbInfo) +{ + int ldCount; + u16 ld; + struct MR_LD_RAID *raid; + + for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES; ldCount++) { + ld = MR_TargetIdToLdGet(ldCount, map); + if (ld >= MAX_LOGICAL_DRIVES) { + lbInfo[ldCount].loadBalanceFlag = 0; + continue; + } + + raid = MR_LdRaidGet(ld, map); + + /* Two drive Optimal RAID 1 */ + if ((raid->level == 1) && (raid->rowSize == 2) && + (raid->spanDepth == 1) && raid->ldState == + MR_LD_STATE_OPTIMAL) { + u32 pd, arRef; + + lbInfo[ldCount].loadBalanceFlag = 1; + + /* Get the array on which this span is present */ + arRef = MR_LdSpanArrayGet(ld, 0, map); + + /* Get the Pd */ + pd = MR_ArPdGet(arRef, 0, map); + /* Get dev handle from Pd */ + lbInfo[ldCount].raid1DevHandle[0] = + MR_PdDevHandleGet(pd, map); + /* Get the Pd */ + pd = MR_ArPdGet(arRef, 1, map); + + /* Get the dev handle from Pd */ + lbInfo[ldCount].raid1DevHandle[1] = + MR_PdDevHandleGet(pd, map); + } else + lbInfo[ldCount].loadBalanceFlag = 0; + } +} + +u8 megasas_get_best_arm(struct LD_LOAD_BALANCE_INFO *lbInfo, u8 arm, u64 block, + u32 count) +{ + u16 pend0, pend1; + u64 diff0, diff1; + u8 bestArm; + + /* get the pending cmds for the data and mirror arms */ + pend0 = atomic_read(&lbInfo->scsi_pending_cmds[0]); + pend1 = atomic_read(&lbInfo->scsi_pending_cmds[1]); + + /* Determine the disk whose head is nearer to the req. block */ + diff0 = ABS_DIFF(block, lbInfo->last_accessed_block[0]); + diff1 = ABS_DIFF(block, lbInfo->last_accessed_block[1]); + bestArm = (diff0 <= diff1 ? 0 : 1); + + if ((bestArm == arm && pend0 > pend1 + 16) || + (bestArm != arm && pend1 > pend0 + 16)) + bestArm ^= 1; + + /* Update the last accessed block on the correct pd */ + lbInfo->last_accessed_block[bestArm] = block + count - 1; + + return bestArm; +} + +u16 get_updated_dev_handle(struct LD_LOAD_BALANCE_INFO *lbInfo, + struct IO_REQUEST_INFO *io_info) +{ + u8 arm, old_arm; + u16 devHandle; + + old_arm = lbInfo->raid1DevHandle[0] == io_info->devHandle ? 0 : 1; + + /* get best new arm */ + arm = megasas_get_best_arm(lbInfo, old_arm, io_info->ldStartBlock, + io_info->numBlocks); + devHandle = lbInfo->raid1DevHandle[arm]; + atomic_inc(&lbInfo->scsi_pending_cmds[arm]); + + return devHandle; +} diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c new file mode 100644 index 00000000..bfd87fab --- /dev/null +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -0,0 +1,2358 @@ +/* + * Linux MegaRAID driver for SAS based RAID controllers + * + * Copyright (c) 2009-2011 LSI Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * FILE: megaraid_sas_fusion.c + * + * Authors: LSI Corporation + * Sumant Patro + * Adam Radford <linuxraid@lsi.com> + * + * Send feedback to: <megaraidlinux@lsi.com> + * + * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 + * ATTN: Linuxraid + */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/list.h> +#include <linux/moduleparam.h> +#include <linux/module.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/uio.h> +#include <linux/uaccess.h> +#include <linux/fs.h> +#include <linux/compat.h> +#include <linux/blkdev.h> +#include <linux/mutex.h> +#include <linux/poll.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> + +#include "megaraid_sas_fusion.h" +#include "megaraid_sas.h" + +extern void megasas_free_cmds(struct megasas_instance *instance); +extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance + *instance); +extern void +megasas_complete_cmd(struct megasas_instance *instance, + struct megasas_cmd *cmd, u8 alt_status); +int megasas_is_ldio(struct scsi_cmnd *cmd); +int +wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd); + +void +megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd); +int megasas_alloc_cmds(struct megasas_instance *instance); +int +megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs); +int +megasas_issue_polled(struct megasas_instance *instance, + struct megasas_cmd *cmd); + +u8 +MR_BuildRaidContext(struct megasas_instance *instance, + struct IO_REQUEST_INFO *io_info, + struct RAID_CONTEXT *pRAID_Context, + struct MR_FW_RAID_MAP_ALL *map); +u16 MR_TargetIdToLdGet(u32 ldTgtId, struct MR_FW_RAID_MAP_ALL *map); +struct MR_LD_RAID *MR_LdRaidGet(u32 ld, struct MR_FW_RAID_MAP_ALL *map); + +u16 MR_GetLDTgtId(u32 ld, struct MR_FW_RAID_MAP_ALL *map); + +void +megasas_check_and_restore_queue_depth(struct megasas_instance *instance); + +u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map, + struct LD_LOAD_BALANCE_INFO *lbInfo); +u16 get_updated_dev_handle(struct LD_LOAD_BALANCE_INFO *lbInfo, + struct IO_REQUEST_INFO *in_info); +int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); +void megaraid_sas_kill_hba(struct megasas_instance *instance); + +extern u32 megasas_dbg_lvl; + +/** + * megasas_enable_intr_fusion - Enables interrupts + * @regs: MFI register set + */ +void +megasas_enable_intr_fusion(struct megasas_register_set __iomem *regs) +{ + /* For Thunderbolt/Invader also clear intr on enable */ + writel(~0, ®s->outbound_intr_status); + readl(®s->outbound_intr_status); + + writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_disable_intr_fusion - Disables interrupt + * @regs: MFI register set + */ +void +megasas_disable_intr_fusion(struct megasas_register_set __iomem *regs) +{ + u32 mask = 0xFFFFFFFF; + u32 status; + + writel(mask, ®s->outbound_intr_mask); + /* Dummy readl to force pci flush */ + status = readl(®s->outbound_intr_mask); +} + +int +megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs) +{ + u32 status; + /* + * Check if it is our interrupt + */ + status = readl(®s->outbound_intr_status); + + if (status & 1) { + writel(status, ®s->outbound_intr_status); + readl(®s->outbound_intr_status); + return 1; + } + if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK)) + return 0; + + return 1; +} + +/** + * megasas_get_cmd_fusion - Get a command from the free pool + * @instance: Adapter soft state + * + * Returns a free command from the pool + */ +struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance + *instance) +{ + unsigned long flags; + struct fusion_context *fusion = + (struct fusion_context *)instance->ctrl_context; + struct megasas_cmd_fusion *cmd = NULL; + + spin_lock_irqsave(&fusion->cmd_pool_lock, flags); + + if (!list_empty(&fusion->cmd_pool)) { + cmd = list_entry((&fusion->cmd_pool)->next, + struct megasas_cmd_fusion, list); + list_del_init(&cmd->list); + } else { + printk(KERN_ERR "megasas: Command pool (fusion) empty!\n"); + } + + spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags); + return cmd; +} + +/** + * megasas_return_cmd_fusion - Return a cmd to free command pool + * @instance: Adapter soft state + * @cmd: Command packet to be returned to free command pool + */ +static inline void +megasas_return_cmd_fusion(struct megasas_instance *instance, + struct megasas_cmd_fusion *cmd) +{ + unsigned long flags; + struct fusion_context *fusion = + (struct fusion_context *)instance->ctrl_context; + + spin_lock_irqsave(&fusion->cmd_pool_lock, flags); + + cmd->scmd = NULL; + cmd->sync_cmd_idx = (u32)ULONG_MAX; + list_add_tail(&cmd->list, &fusion->cmd_pool); + + spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags); +} + +/** + * megasas_teardown_frame_pool_fusion - Destroy the cmd frame DMA pool + * @instance: Adapter soft state + */ +static void megasas_teardown_frame_pool_fusion( + struct megasas_instance *instance) +{ + int i; + struct fusion_context *fusion = instance->ctrl_context; + + u16 max_cmd = instance->max_fw_cmds; + + struct megasas_cmd_fusion *cmd; + + if (!fusion->sg_dma_pool || !fusion->sense_dma_pool) { + printk(KERN_ERR "megasas: dma pool is null. SG Pool %p, " + "sense pool : %p\n", fusion->sg_dma_pool, + fusion->sense_dma_pool); + return; + } + + /* + * Return all frames to pool + */ + for (i = 0; i < max_cmd; i++) { + + cmd = fusion->cmd_list[i]; + + if (cmd->sg_frame) + pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame, + cmd->sg_frame_phys_addr); + + if (cmd->sense) + pci_pool_free(fusion->sense_dma_pool, cmd->sense, + cmd->sense_phys_addr); + } + + /* + * Now destroy the pool itself + */ + pci_pool_destroy(fusion->sg_dma_pool); + pci_pool_destroy(fusion->sense_dma_pool); + + fusion->sg_dma_pool = NULL; + fusion->sense_dma_pool = NULL; +} + +/** + * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool + * @instance: Adapter soft state + */ +void +megasas_free_cmds_fusion(struct megasas_instance *instance) +{ + int i; + struct fusion_context *fusion = instance->ctrl_context; + + u32 max_cmds, req_sz, reply_sz, io_frames_sz; + + + req_sz = fusion->request_alloc_sz; + reply_sz = fusion->reply_alloc_sz; + io_frames_sz = fusion->io_frames_alloc_sz; + + max_cmds = instance->max_fw_cmds; + + /* Free descriptors and request Frames memory */ + if (fusion->req_frames_desc) + dma_free_coherent(&instance->pdev->dev, req_sz, + fusion->req_frames_desc, + fusion->req_frames_desc_phys); + + if (fusion->reply_frames_desc) { + pci_pool_free(fusion->reply_frames_desc_pool, + fusion->reply_frames_desc, + fusion->reply_frames_desc_phys); + pci_pool_destroy(fusion->reply_frames_desc_pool); + } + + if (fusion->io_request_frames) { + pci_pool_free(fusion->io_request_frames_pool, + fusion->io_request_frames, + fusion->io_request_frames_phys); + pci_pool_destroy(fusion->io_request_frames_pool); + } + + /* Free the Fusion frame pool */ + megasas_teardown_frame_pool_fusion(instance); + + /* Free all the commands in the cmd_list */ + for (i = 0; i < max_cmds; i++) + kfree(fusion->cmd_list[i]); + + /* Free the cmd_list buffer itself */ + kfree(fusion->cmd_list); + fusion->cmd_list = NULL; + + INIT_LIST_HEAD(&fusion->cmd_pool); +} + +/** + * megasas_create_frame_pool_fusion - Creates DMA pool for cmd frames + * @instance: Adapter soft state + * + */ +static int megasas_create_frame_pool_fusion(struct megasas_instance *instance) +{ + int i; + u32 max_cmd; + struct fusion_context *fusion; + struct megasas_cmd_fusion *cmd; + u32 total_sz_chain_frame; + + fusion = instance->ctrl_context; + max_cmd = instance->max_fw_cmds; + + total_sz_chain_frame = MEGASAS_MAX_SZ_CHAIN_FRAME; + + /* + * Use DMA pool facility provided by PCI layer + */ + + fusion->sg_dma_pool = pci_pool_create("megasas sg pool fusion", + instance->pdev, + total_sz_chain_frame, 4, + 0); + if (!fusion->sg_dma_pool) { + printk(KERN_DEBUG "megasas: failed to setup request pool " + "fusion\n"); + return -ENOMEM; + } + fusion->sense_dma_pool = pci_pool_create("megasas sense pool fusion", + instance->pdev, + SCSI_SENSE_BUFFERSIZE, 64, 0); + + if (!fusion->sense_dma_pool) { + printk(KERN_DEBUG "megasas: failed to setup sense pool " + "fusion\n"); + pci_pool_destroy(fusion->sg_dma_pool); + fusion->sg_dma_pool = NULL; + return -ENOMEM; + } + + /* + * Allocate and attach a frame to each of the commands in cmd_list + */ + for (i = 0; i < max_cmd; i++) { + + cmd = fusion->cmd_list[i]; + + cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool, + GFP_KERNEL, + &cmd->sg_frame_phys_addr); + + cmd->sense = pci_pool_alloc(fusion->sense_dma_pool, + GFP_KERNEL, &cmd->sense_phys_addr); + /* + * megasas_teardown_frame_pool_fusion() takes care of freeing + * whatever has been allocated + */ + if (!cmd->sg_frame || !cmd->sense) { + printk(KERN_DEBUG "megasas: pci_pool_alloc failed\n"); + megasas_teardown_frame_pool_fusion(instance); + return -ENOMEM; + } + } + return 0; +} + +/** + * megasas_alloc_cmds_fusion - Allocates the command packets + * @instance: Adapter soft state + * + * + * Each frame has a 32-bit field called context. This context is used to get + * back the megasas_cmd_fusion from the frame when a frame gets completed + * In this driver, the 32 bit values are the indices into an array cmd_list. + * This array is used only to look up the megasas_cmd_fusion given the context. + * The free commands themselves are maintained in a linked list called cmd_pool. + * + * cmds are formed in the io_request and sg_frame members of the + * megasas_cmd_fusion. The context field is used to get a request descriptor + * and is used as SMID of the cmd. + * SMID value range is from 1 to max_fw_cmds. + */ +int +megasas_alloc_cmds_fusion(struct megasas_instance *instance) +{ + int i, j, count; + u32 max_cmd, io_frames_sz; + struct fusion_context *fusion; + struct megasas_cmd_fusion *cmd; + union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; + u32 offset; + dma_addr_t io_req_base_phys; + u8 *io_req_base; + + fusion = instance->ctrl_context; + + max_cmd = instance->max_fw_cmds; + + fusion->req_frames_desc = + dma_alloc_coherent(&instance->pdev->dev, + fusion->request_alloc_sz, + &fusion->req_frames_desc_phys, GFP_KERNEL); + + if (!fusion->req_frames_desc) { + printk(KERN_ERR "megasas; Could not allocate memory for " + "request_frames\n"); + goto fail_req_desc; + } + + count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; + fusion->reply_frames_desc_pool = + pci_pool_create("reply_frames pool", instance->pdev, + fusion->reply_alloc_sz * count, 16, 0); + + if (!fusion->reply_frames_desc_pool) { + printk(KERN_ERR "megasas; Could not allocate memory for " + "reply_frame pool\n"); + goto fail_reply_desc; + } + + fusion->reply_frames_desc = + pci_pool_alloc(fusion->reply_frames_desc_pool, GFP_KERNEL, + &fusion->reply_frames_desc_phys); + if (!fusion->reply_frames_desc) { + printk(KERN_ERR "megasas; Could not allocate memory for " + "reply_frame pool\n"); + pci_pool_destroy(fusion->reply_frames_desc_pool); + goto fail_reply_desc; + } + + reply_desc = fusion->reply_frames_desc; + for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++) + reply_desc->Words = ULLONG_MAX; + + io_frames_sz = fusion->io_frames_alloc_sz; + + fusion->io_request_frames_pool = + pci_pool_create("io_request_frames pool", instance->pdev, + fusion->io_frames_alloc_sz, 16, 0); + + if (!fusion->io_request_frames_pool) { + printk(KERN_ERR "megasas: Could not allocate memory for " + "io_request_frame pool\n"); + goto fail_io_frames; + } + + fusion->io_request_frames = + pci_pool_alloc(fusion->io_request_frames_pool, GFP_KERNEL, + &fusion->io_request_frames_phys); + if (!fusion->io_request_frames) { + printk(KERN_ERR "megasas: Could not allocate memory for " + "io_request_frames frames\n"); + pci_pool_destroy(fusion->io_request_frames_pool); + goto fail_io_frames; + } + + /* + * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers. + * Allocate the dynamic array first and then allocate individual + * commands. + */ + fusion->cmd_list = kmalloc(sizeof(struct megasas_cmd_fusion *) + *max_cmd, GFP_KERNEL); + + if (!fusion->cmd_list) { + printk(KERN_DEBUG "megasas: out of memory. Could not alloc " + "memory for cmd_list_fusion\n"); + goto fail_cmd_list; + } + + memset(fusion->cmd_list, 0, sizeof(struct megasas_cmd_fusion *) + *max_cmd); + + max_cmd = instance->max_fw_cmds; + for (i = 0; i < max_cmd; i++) { + fusion->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd_fusion), + GFP_KERNEL); + if (!fusion->cmd_list[i]) { + printk(KERN_ERR "Could not alloc cmd list fusion\n"); + + for (j = 0; j < i; j++) + kfree(fusion->cmd_list[j]); + + kfree(fusion->cmd_list); + fusion->cmd_list = NULL; + goto fail_cmd_list; + } + } + + /* The first 256 bytes (SMID 0) is not used. Don't add to cmd list */ + io_req_base = fusion->io_request_frames + + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; + io_req_base_phys = fusion->io_request_frames_phys + + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; + + /* + * Add all the commands to command pool (fusion->cmd_pool) + */ + + /* SMID 0 is reserved. Set SMID/index from 1 */ + for (i = 0; i < max_cmd; i++) { + cmd = fusion->cmd_list[i]; + offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i; + memset(cmd, 0, sizeof(struct megasas_cmd_fusion)); + cmd->index = i + 1; + cmd->scmd = NULL; + cmd->sync_cmd_idx = (u32)ULONG_MAX; /* Set to Invalid */ + cmd->instance = instance; + cmd->io_request = + (struct MPI2_RAID_SCSI_IO_REQUEST *) + (io_req_base + offset); + memset(cmd->io_request, 0, + sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)); + cmd->io_request_phys_addr = io_req_base_phys + offset; + + list_add_tail(&cmd->list, &fusion->cmd_pool); + } + + /* + * Create a frame pool and assign one frame to each cmd + */ + if (megasas_create_frame_pool_fusion(instance)) { + printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); + megasas_free_cmds_fusion(instance); + goto fail_req_desc; + } + + return 0; + +fail_cmd_list: + pci_pool_free(fusion->io_request_frames_pool, fusion->io_request_frames, + fusion->io_request_frames_phys); + pci_pool_destroy(fusion->io_request_frames_pool); +fail_io_frames: + dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz, + fusion->reply_frames_desc, + fusion->reply_frames_desc_phys); + pci_pool_free(fusion->reply_frames_desc_pool, + fusion->reply_frames_desc, + fusion->reply_frames_desc_phys); + pci_pool_destroy(fusion->reply_frames_desc_pool); + +fail_reply_desc: + dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz, + fusion->req_frames_desc, + fusion->req_frames_desc_phys); +fail_req_desc: + return -ENOMEM; +} + +/** + * wait_and_poll - Issues a polling command + * @instance: Adapter soft state + * @cmd: Command packet to be issued + * + * For polling, MFI requires the cmd_status to be set to 0xFF before posting. + */ +int +wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd) +{ + int i; + struct megasas_header *frame_hdr = &cmd->frame->hdr; + + u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000; + + /* + * Wait for cmd_status to change + */ + for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) { + rmb(); + msleep(20); + } + + if (frame_hdr->cmd_status == 0xff) + return -ETIME; + + return 0; +} + +/** + * megasas_ioc_init_fusion - Initializes the FW + * @instance: Adapter soft state + * + * Issues the IOC Init cmd + */ +int +megasas_ioc_init_fusion(struct megasas_instance *instance) +{ + struct megasas_init_frame *init_frame; + struct MPI2_IOC_INIT_REQUEST *IOCInitMessage; + dma_addr_t ioc_init_handle; + struct megasas_cmd *cmd; + u8 ret; + struct fusion_context *fusion; + union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; + int i; + struct megasas_header *frame_hdr; + + fusion = instance->ctrl_context; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_ERR "Could not allocate cmd for INIT Frame\n"); + ret = 1; + goto fail_get_cmd; + } + + IOCInitMessage = + dma_alloc_coherent(&instance->pdev->dev, + sizeof(struct MPI2_IOC_INIT_REQUEST), + &ioc_init_handle, GFP_KERNEL); + + if (!IOCInitMessage) { + printk(KERN_ERR "Could not allocate memory for " + "IOCInitMessage\n"); + ret = 1; + goto fail_fw_init; + } + + memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST)); + + IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT; + IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER; + IOCInitMessage->MsgVersion = MPI2_VERSION; + IOCInitMessage->HeaderVersion = MPI2_HEADER_VERSION; + IOCInitMessage->SystemRequestFrameSize = + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4; + + IOCInitMessage->ReplyDescriptorPostQueueDepth = fusion->reply_q_depth; + IOCInitMessage->ReplyDescriptorPostQueueAddress = + fusion->reply_frames_desc_phys; + IOCInitMessage->SystemRequestFrameBaseAddress = + fusion->io_request_frames_phys; + /* Set to 0 for none or 1 MSI-X vectors */ + IOCInitMessage->HostMSIxVectors = (instance->msix_vectors > 0 ? + instance->msix_vectors : 0); + init_frame = (struct megasas_init_frame *)cmd->frame; + memset(init_frame, 0, MEGAMFI_FRAME_SIZE); + + frame_hdr = &cmd->frame->hdr; + frame_hdr->cmd_status = 0xFF; + frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE; + + init_frame->cmd = MFI_CMD_INIT; + init_frame->cmd_status = 0xFF; + + init_frame->queue_info_new_phys_addr_lo = ioc_init_handle; + init_frame->data_xfer_len = sizeof(struct MPI2_IOC_INIT_REQUEST); + + req_desc = + (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)fusion->req_frames_desc; + + req_desc->Words = cmd->frame_phys_addr; + req_desc->MFAIo.RequestFlags = + (MEGASAS_REQ_DESCRIPT_FLAGS_MFA << + MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + + /* + * disable the intr before firing the init frame + */ + instance->instancet->disable_intr(instance->reg_set); + + for (i = 0; i < (10 * 1000); i += 20) { + if (readl(&instance->reg_set->doorbell) & 1) + msleep(20); + else + break; + } + + instance->instancet->fire_cmd(instance, req_desc->u.low, + req_desc->u.high, instance->reg_set); + + wait_and_poll(instance, cmd); + + frame_hdr = &cmd->frame->hdr; + if (frame_hdr->cmd_status != 0) { + ret = 1; + goto fail_fw_init; + } + printk(KERN_ERR "megasas:IOC Init cmd success\n"); + + ret = 0; + +fail_fw_init: + megasas_return_cmd(instance, cmd); + if (IOCInitMessage) + dma_free_coherent(&instance->pdev->dev, + sizeof(struct MPI2_IOC_INIT_REQUEST), + IOCInitMessage, ioc_init_handle); +fail_get_cmd: + return ret; +} + +/* + * megasas_get_ld_map_info - Returns FW's ld_map structure + * @instance: Adapter soft state + * @pend: Pend the command or not + * Issues an internal command (DCMD) to get the FW's controller PD + * list structure. This information is mainly used to find out SYSTEM + * supported by the FW. + */ +static int +megasas_get_ld_map_info(struct megasas_instance *instance) +{ + int ret = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_FW_RAID_MAP_ALL *ci; + dma_addr_t ci_h = 0; + u32 size_map_info; + struct fusion_context *fusion; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_DEBUG "megasas: Failed to get cmd for map info.\n"); + return -ENOMEM; + } + + fusion = instance->ctrl_context; + + if (!fusion) { + megasas_return_cmd(instance, cmd); + return 1; + } + + dcmd = &cmd->frame->dcmd; + + size_map_info = sizeof(struct MR_FW_RAID_MAP) + + (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1)); + + ci = fusion->ld_map[(instance->map_id & 1)]; + ci_h = fusion->ld_map_phys[(instance->map_id & 1)]; + + if (!ci) { + printk(KERN_DEBUG "Failed to alloc mem for ld_map_info\n"); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0xFF; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = size_map_info; + dcmd->opcode = MR_DCMD_LD_MAP_GET_INFO; + dcmd->sgl.sge32[0].phys_addr = ci_h; + dcmd->sgl.sge32[0].length = size_map_info; + + if (!megasas_issue_polled(instance, cmd)) + ret = 0; + else { + printk(KERN_ERR "megasas: Get LD Map Info Failed\n"); + ret = -1; + } + + megasas_return_cmd(instance, cmd); + + return ret; +} + +u8 +megasas_get_map_info(struct megasas_instance *instance) +{ + struct fusion_context *fusion = instance->ctrl_context; + + fusion->fast_path_io = 0; + if (!megasas_get_ld_map_info(instance)) { + if (MR_ValidateMapInfo(fusion->ld_map[(instance->map_id & 1)], + fusion->load_balance_info)) { + fusion->fast_path_io = 1; + return 0; + } + } + return 1; +} + +/* + * megasas_sync_map_info - Returns FW's ld_map structure + * @instance: Adapter soft state + * + * Issues an internal command (DCMD) to get the FW's controller PD + * list structure. This information is mainly used to find out SYSTEM + * supported by the FW. + */ +int +megasas_sync_map_info(struct megasas_instance *instance) +{ + int ret = 0, i; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + u32 size_sync_info, num_lds; + struct fusion_context *fusion; + struct MR_LD_TARGET_SYNC *ci = NULL; + struct MR_FW_RAID_MAP_ALL *map; + struct MR_LD_RAID *raid; + struct MR_LD_TARGET_SYNC *ld_sync; + dma_addr_t ci_h = 0; + u32 size_map_info; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_DEBUG "megasas: Failed to get cmd for sync" + "info.\n"); + return -ENOMEM; + } + + fusion = instance->ctrl_context; + + if (!fusion) { + megasas_return_cmd(instance, cmd); + return 1; + } + + map = fusion->ld_map[instance->map_id & 1]; + + num_lds = map->raidMap.ldCount; + + dcmd = &cmd->frame->dcmd; + + size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds; + + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + ci = (struct MR_LD_TARGET_SYNC *) + fusion->ld_map[(instance->map_id - 1) & 1]; + memset(ci, 0, sizeof(struct MR_FW_RAID_MAP_ALL)); + + ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1]; + + ld_sync = (struct MR_LD_TARGET_SYNC *)ci; + + for (i = 0; i < num_lds; i++, ld_sync++) { + raid = MR_LdRaidGet(i, map); + ld_sync->targetId = MR_GetLDTgtId(i, map); + ld_sync->seqNum = raid->seqNum; + } + + size_map_info = sizeof(struct MR_FW_RAID_MAP) + + (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1)); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0xFF; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_WRITE; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = size_map_info; + dcmd->mbox.b[0] = num_lds; + dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG; + dcmd->opcode = MR_DCMD_LD_MAP_GET_INFO; + dcmd->sgl.sge32[0].phys_addr = ci_h; + dcmd->sgl.sge32[0].length = size_map_info; + + instance->map_update_cmd = cmd; + + instance->instancet->issue_dcmd(instance, cmd); + + return ret; +} + +/** + * megasas_init_adapter_fusion - Initializes the FW + * @instance: Adapter soft state + * + * This is the main function for initializing firmware. + */ +u32 +megasas_init_adapter_fusion(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *reg_set; + struct fusion_context *fusion; + u32 max_cmd; + int i = 0, count; + + fusion = instance->ctrl_context; + + reg_set = instance->reg_set; + + /* + * Get various operational parameters from status register + */ + instance->max_fw_cmds = + instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; + instance->max_fw_cmds = min(instance->max_fw_cmds, (u16)1008); + + /* + * Reduce the max supported cmds by 1. This is to ensure that the + * reply_q_sz (1 more than the max cmd that driver may send) + * does not exceed max cmds that the FW can support + */ + instance->max_fw_cmds = instance->max_fw_cmds-1; + /* Only internal cmds (DCMD) need to have MFI frames */ + instance->max_mfi_cmds = MEGASAS_INT_CMDS; + + max_cmd = instance->max_fw_cmds; + + fusion->reply_q_depth = ((max_cmd + 1 + 15)/16)*16; + + fusion->request_alloc_sz = + sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *max_cmd; + fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) + *(fusion->reply_q_depth); + fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE + + (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * + (max_cmd + 1)); /* Extra 1 for SMID 0 */ + + fusion->max_sge_in_main_msg = + (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE - + offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16; + + fusion->max_sge_in_chain = + MEGASAS_MAX_SZ_CHAIN_FRAME / sizeof(union MPI2_SGE_IO_UNION); + + instance->max_num_sge = fusion->max_sge_in_main_msg + + fusion->max_sge_in_chain - 2; + + /* Used for pass thru MFI frame (DCMD) */ + fusion->chain_offset_mfi_pthru = + offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16; + + fusion->chain_offset_io_request = + (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE - + sizeof(union MPI2_SGE_IO_UNION))/16; + + count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; + for (i = 0 ; i < count; i++) + fusion->last_reply_idx[i] = 0; + + /* + * Allocate memory for descriptors + * Create a pool of commands + */ + if (megasas_alloc_cmds(instance)) + goto fail_alloc_mfi_cmds; + if (megasas_alloc_cmds_fusion(instance)) + goto fail_alloc_cmds; + + if (megasas_ioc_init_fusion(instance)) + goto fail_ioc_init; + + instance->flag_ieee = 1; + + fusion->map_sz = sizeof(struct MR_FW_RAID_MAP) + + (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1)); + + fusion->fast_path_io = 0; + + for (i = 0; i < 2; i++) { + fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev, + fusion->map_sz, + &fusion->ld_map_phys[i], + GFP_KERNEL); + if (!fusion->ld_map[i]) { + printk(KERN_ERR "megasas: Could not allocate memory " + "for map info\n"); + goto fail_map_info; + } + } + + if (!megasas_get_map_info(instance)) + megasas_sync_map_info(instance); + + return 0; + +fail_map_info: + if (i == 1) + dma_free_coherent(&instance->pdev->dev, fusion->map_sz, + fusion->ld_map[0], fusion->ld_map_phys[0]); +fail_ioc_init: + megasas_free_cmds_fusion(instance); +fail_alloc_cmds: + megasas_free_cmds(instance); +fail_alloc_mfi_cmds: + return 1; +} + +/** + * megasas_fire_cmd_fusion - Sends command to the FW + * @frame_phys_addr : Physical address of cmd + * @frame_count : Number of frames for the command + * @regs : MFI register set + */ +void +megasas_fire_cmd_fusion(struct megasas_instance *instance, + dma_addr_t req_desc_lo, + u32 req_desc_hi, + struct megasas_register_set __iomem *regs) +{ + unsigned long flags; + + spin_lock_irqsave(&instance->hba_lock, flags); + + writel(req_desc_lo, + &(regs)->inbound_low_queue_port); + writel(req_desc_hi, &(regs)->inbound_high_queue_port); + spin_unlock_irqrestore(&instance->hba_lock, flags); +} + +/** + * map_cmd_status - Maps FW cmd status to OS cmd status + * @cmd : Pointer to cmd + * @status : status of cmd returned by FW + * @ext_status : ext status of cmd returned by FW + */ + +void +map_cmd_status(struct megasas_cmd_fusion *cmd, u8 status, u8 ext_status) +{ + + switch (status) { + + case MFI_STAT_OK: + cmd->scmd->result = DID_OK << 16; + break; + + case MFI_STAT_SCSI_IO_FAILED: + case MFI_STAT_LD_INIT_IN_PROGRESS: + cmd->scmd->result = (DID_ERROR << 16) | ext_status; + break; + + case MFI_STAT_SCSI_DONE_WITH_ERROR: + + cmd->scmd->result = (DID_OK << 16) | ext_status; + if (ext_status == SAM_STAT_CHECK_CONDITION) { + memset(cmd->scmd->sense_buffer, 0, + SCSI_SENSE_BUFFERSIZE); + memcpy(cmd->scmd->sense_buffer, cmd->sense, + SCSI_SENSE_BUFFERSIZE); + cmd->scmd->result |= DRIVER_SENSE << 24; + } + break; + + case MFI_STAT_LD_OFFLINE: + case MFI_STAT_DEVICE_NOT_FOUND: + cmd->scmd->result = DID_BAD_TARGET << 16; + break; + case MFI_STAT_CONFIG_SEQ_MISMATCH: + cmd->scmd->result = DID_IMM_RETRY << 16; + break; + default: + printk(KERN_DEBUG "megasas: FW status %#x\n", status); + cmd->scmd->result = DID_ERROR << 16; + break; + } +} + +/** + * megasas_make_sgl_fusion - Prepares 32-bit SGL + * @instance: Adapter soft state + * @scp: SCSI command from the mid-layer + * @sgl_ptr: SGL to be filled in + * @cmd: cmd we are working on + * + * If successful, this function returns the number of SG elements. + */ +static int +megasas_make_sgl_fusion(struct megasas_instance *instance, + struct scsi_cmnd *scp, + struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, + struct megasas_cmd_fusion *cmd) +{ + int i, sg_processed, sge_count; + struct scatterlist *os_sgl; + struct fusion_context *fusion; + + fusion = instance->ctrl_context; + + if (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) { + struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr; + sgl_ptr_end += fusion->max_sge_in_main_msg - 1; + sgl_ptr_end->Flags = 0; + } + + sge_count = scsi_dma_map(scp); + + BUG_ON(sge_count < 0); + + if (sge_count > instance->max_num_sge || !sge_count) + return sge_count; + + scsi_for_each_sg(scp, os_sgl, sge_count, i) { + sgl_ptr->Length = sg_dma_len(os_sgl); + sgl_ptr->Address = sg_dma_address(os_sgl); + sgl_ptr->Flags = 0; + if (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) { + if (i == sge_count - 1) + sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST; + } + sgl_ptr++; + + sg_processed = i + 1; + + if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) && + (sge_count > fusion->max_sge_in_main_msg)) { + + struct MPI25_IEEE_SGE_CHAIN64 *sg_chain; + if (instance->pdev->device == + PCI_DEVICE_ID_LSI_INVADER) { + if ((cmd->io_request->IoFlags & + MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) != + MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) + cmd->io_request->ChainOffset = + fusion-> + chain_offset_io_request; + else + cmd->io_request->ChainOffset = 0; + } else + cmd->io_request->ChainOffset = + fusion->chain_offset_io_request; + + sg_chain = sgl_ptr; + /* Prepare chain element */ + sg_chain->NextChainOffset = 0; + if (instance->pdev->device == + PCI_DEVICE_ID_LSI_INVADER) + sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT; + else + sg_chain->Flags = + (IEEE_SGE_FLAGS_CHAIN_ELEMENT | + MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR); + sg_chain->Length = (sizeof(union MPI2_SGE_IO_UNION) + *(sge_count - sg_processed)); + sg_chain->Address = cmd->sg_frame_phys_addr; + + sgl_ptr = + (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame; + } + } + + return sge_count; +} + +/** + * megasas_set_pd_lba - Sets PD LBA + * @cdb: CDB + * @cdb_len: cdb length + * @start_blk: Start block of IO + * + * Used to set the PD LBA in CDB for FP IOs + */ +void +megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len, + struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp, + struct MR_FW_RAID_MAP_ALL *local_map_ptr, u32 ref_tag) +{ + struct MR_LD_RAID *raid; + u32 ld; + u64 start_blk = io_info->pdBlock; + u8 *cdb = io_request->CDB.CDB32; + u32 num_blocks = io_info->numBlocks; + u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0; + + /* Check if T10 PI (DIF) is enabled for this LD */ + ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr); + raid = MR_LdRaidGet(ld, local_map_ptr); + if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) { + memset(cdb, 0, sizeof(io_request->CDB.CDB32)); + cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD; + cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN; + + if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) + cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32; + else + cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32; + cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL; + + /* LBA */ + cdb[12] = (u8)((start_blk >> 56) & 0xff); + cdb[13] = (u8)((start_blk >> 48) & 0xff); + cdb[14] = (u8)((start_blk >> 40) & 0xff); + cdb[15] = (u8)((start_blk >> 32) & 0xff); + cdb[16] = (u8)((start_blk >> 24) & 0xff); + cdb[17] = (u8)((start_blk >> 16) & 0xff); + cdb[18] = (u8)((start_blk >> 8) & 0xff); + cdb[19] = (u8)(start_blk & 0xff); + + /* Logical block reference tag */ + io_request->CDB.EEDP32.PrimaryReferenceTag = + cpu_to_be32(ref_tag); + io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0xffff; + + io_request->DataLength = num_blocks * 512; + io_request->IoFlags = 32; /* Specify 32-byte cdb */ + + /* Transfer length */ + cdb[28] = (u8)((num_blocks >> 24) & 0xff); + cdb[29] = (u8)((num_blocks >> 16) & 0xff); + cdb[30] = (u8)((num_blocks >> 8) & 0xff); + cdb[31] = (u8)(num_blocks & 0xff); + + /* set SCSI IO EEDPFlags */ + if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) { + io_request->EEDPFlags = + MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | + MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG | + MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP | + MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG | + MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD; + } else { + io_request->EEDPFlags = + MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | + MPI2_SCSIIO_EEDPFLAGS_INSERT_OP; + } + io_request->Control |= (0x4 << 26); + io_request->EEDPBlockSize = MEGASAS_EEDPBLOCKSIZE; + } else { + /* Some drives don't support 16/12 byte CDB's, convert to 10 */ + if (((cdb_len == 12) || (cdb_len == 16)) && + (start_blk <= 0xffffffff)) { + if (cdb_len == 16) { + opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10; + flagvals = cdb[1]; + groupnum = cdb[14]; + control = cdb[15]; + } else { + opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10; + flagvals = cdb[1]; + groupnum = cdb[10]; + control = cdb[11]; + } + + memset(cdb, 0, sizeof(io_request->CDB.CDB32)); + + cdb[0] = opcode; + cdb[1] = flagvals; + cdb[6] = groupnum; + cdb[9] = control; + + /* Transfer length */ + cdb[8] = (u8)(num_blocks & 0xff); + cdb[7] = (u8)((num_blocks >> 8) & 0xff); + + io_request->IoFlags = 10; /* Specify 10-byte cdb */ + cdb_len = 10; + } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) { + /* Convert to 16 byte CDB for large LBA's */ + switch (cdb_len) { + case 6: + opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16; + control = cdb[5]; + break; + case 10: + opcode = + cdb[0] == READ_10 ? READ_16 : WRITE_16; + flagvals = cdb[1]; + groupnum = cdb[6]; + control = cdb[9]; + break; + case 12: + opcode = + cdb[0] == READ_12 ? READ_16 : WRITE_16; + flagvals = cdb[1]; + groupnum = cdb[10]; + control = cdb[11]; + break; + } + + memset(cdb, 0, sizeof(io_request->CDB.CDB32)); + + cdb[0] = opcode; + cdb[1] = flagvals; + cdb[14] = groupnum; + cdb[15] = control; + + /* Transfer length */ + cdb[13] = (u8)(num_blocks & 0xff); + cdb[12] = (u8)((num_blocks >> 8) & 0xff); + cdb[11] = (u8)((num_blocks >> 16) & 0xff); + cdb[10] = (u8)((num_blocks >> 24) & 0xff); + + io_request->IoFlags = 16; /* Specify 16-byte cdb */ + cdb_len = 16; + } + + /* Normal case, just load LBA here */ + switch (cdb_len) { + case 6: + { + u8 val = cdb[1] & 0xE0; + cdb[3] = (u8)(start_blk & 0xff); + cdb[2] = (u8)((start_blk >> 8) & 0xff); + cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f); + break; + } + case 10: + cdb[5] = (u8)(start_blk & 0xff); + cdb[4] = (u8)((start_blk >> 8) & 0xff); + cdb[3] = (u8)((start_blk >> 16) & 0xff); + cdb[2] = (u8)((start_blk >> 24) & 0xff); + break; + case 12: + cdb[5] = (u8)(start_blk & 0xff); + cdb[4] = (u8)((start_blk >> 8) & 0xff); + cdb[3] = (u8)((start_blk >> 16) & 0xff); + cdb[2] = (u8)((start_blk >> 24) & 0xff); + break; + case 16: + cdb[9] = (u8)(start_blk & 0xff); + cdb[8] = (u8)((start_blk >> 8) & 0xff); + cdb[7] = (u8)((start_blk >> 16) & 0xff); + cdb[6] = (u8)((start_blk >> 24) & 0xff); + cdb[5] = (u8)((start_blk >> 32) & 0xff); + cdb[4] = (u8)((start_blk >> 40) & 0xff); + cdb[3] = (u8)((start_blk >> 48) & 0xff); + cdb[2] = (u8)((start_blk >> 56) & 0xff); + break; + } + } +} + +/** + * megasas_build_ldio_fusion - Prepares IOs to devices + * @instance: Adapter soft state + * @scp: SCSI command + * @cmd: Command to be prepared + * + * Prepares the io_request and chain elements (sg_frame) for IO + * The IO can be for PD (Fast Path) or LD + */ +void +megasas_build_ldio_fusion(struct megasas_instance *instance, + struct scsi_cmnd *scp, + struct megasas_cmd_fusion *cmd) +{ + u8 fp_possible; + u32 start_lba_lo, start_lba_hi, device_id; + struct MPI2_RAID_SCSI_IO_REQUEST *io_request; + union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; + struct IO_REQUEST_INFO io_info; + struct fusion_context *fusion; + struct MR_FW_RAID_MAP_ALL *local_map_ptr; + + device_id = MEGASAS_DEV_INDEX(instance, scp); + + fusion = instance->ctrl_context; + + io_request = cmd->io_request; + io_request->RaidContext.VirtualDiskTgtId = device_id; + io_request->RaidContext.status = 0; + io_request->RaidContext.exStatus = 0; + + req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc; + + start_lba_lo = 0; + start_lba_hi = 0; + fp_possible = 0; + + /* + * 6-byte READ(0x08) or WRITE(0x0A) cdb + */ + if (scp->cmd_len == 6) { + io_request->DataLength = (u32) scp->cmnd[4]; + start_lba_lo = ((u32) scp->cmnd[1] << 16) | + ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; + + start_lba_lo &= 0x1FFFFF; + } + + /* + * 10-byte READ(0x28) or WRITE(0x2A) cdb + */ + else if (scp->cmd_len == 10) { + io_request->DataLength = (u32) scp->cmnd[8] | + ((u32) scp->cmnd[7] << 8); + start_lba_lo = ((u32) scp->cmnd[2] << 24) | + ((u32) scp->cmnd[3] << 16) | + ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; + } + + /* + * 12-byte READ(0xA8) or WRITE(0xAA) cdb + */ + else if (scp->cmd_len == 12) { + io_request->DataLength = ((u32) scp->cmnd[6] << 24) | + ((u32) scp->cmnd[7] << 16) | + ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; + start_lba_lo = ((u32) scp->cmnd[2] << 24) | + ((u32) scp->cmnd[3] << 16) | + ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; + } + + /* + * 16-byte READ(0x88) or WRITE(0x8A) cdb + */ + else if (scp->cmd_len == 16) { + io_request->DataLength = ((u32) scp->cmnd[10] << 24) | + ((u32) scp->cmnd[11] << 16) | + ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; + start_lba_lo = ((u32) scp->cmnd[6] << 24) | + ((u32) scp->cmnd[7] << 16) | + ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; + + start_lba_hi = ((u32) scp->cmnd[2] << 24) | + ((u32) scp->cmnd[3] << 16) | + ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; + } + + memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO)); + io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo; + io_info.numBlocks = io_request->DataLength; + io_info.ldTgtId = device_id; + + if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) + io_info.isRead = 1; + + local_map_ptr = fusion->ld_map[(instance->map_id & 1)]; + + if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >= + MAX_LOGICAL_DRIVES) || (!fusion->fast_path_io)) { + io_request->RaidContext.regLockFlags = 0; + fp_possible = 0; + } else { + if (MR_BuildRaidContext(instance, &io_info, + &io_request->RaidContext, + local_map_ptr)) + fp_possible = io_info.fpOkForIo; + } + + /* Use smp_processor_id() for now until cmd->request->cpu is CPU + id by default, not CPU group id, otherwise all MSI-X queues won't + be utilized */ + cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ? + smp_processor_id() % instance->msix_vectors : 0; + + if (fp_possible) { + megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp, + local_map_ptr, start_lba_lo); + io_request->DataLength = scsi_bufflen(scp); + io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; + cmd->request_desc->SCSIIO.RequestFlags = + (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY + << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + if (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) { + if (io_request->RaidContext.regLockFlags == + REGION_TYPE_UNUSED) + cmd->request_desc->SCSIIO.RequestFlags = + (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << + MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + io_request->RaidContext.Type = MPI2_TYPE_CUDA; + io_request->RaidContext.nseg = 0x1; + io_request->IoFlags |= + MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH; + io_request->RaidContext.regLockFlags |= + (MR_RL_FLAGS_GRANT_DESTINATION_CUDA | + MR_RL_FLAGS_SEQ_NUM_ENABLE); + } + if ((fusion->load_balance_info[device_id].loadBalanceFlag) && + (io_info.isRead)) { + io_info.devHandle = + get_updated_dev_handle( + &fusion->load_balance_info[device_id], + &io_info); + scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG; + } else + scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; + cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle; + io_request->DevHandle = io_info.devHandle; + } else { + io_request->RaidContext.timeoutValue = + local_map_ptr->raidMap.fpPdIoTimeoutSec; + cmd->request_desc->SCSIIO.RequestFlags = + (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO + << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + if (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) { + if (io_request->RaidContext.regLockFlags == + REGION_TYPE_UNUSED) + cmd->request_desc->SCSIIO.RequestFlags = + (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << + MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + io_request->RaidContext.Type = MPI2_TYPE_CUDA; + io_request->RaidContext.regLockFlags |= + (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 | + MR_RL_FLAGS_SEQ_NUM_ENABLE); + io_request->RaidContext.nseg = 0x1; + } + io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; + io_request->DevHandle = device_id; + } /* Not FP */ +} + +/** + * megasas_build_dcdb_fusion - Prepares IOs to devices + * @instance: Adapter soft state + * @scp: SCSI command + * @cmd: Command to be prepared + * + * Prepares the io_request frame for non-io cmds + */ +static void +megasas_build_dcdb_fusion(struct megasas_instance *instance, + struct scsi_cmnd *scmd, + struct megasas_cmd_fusion *cmd) +{ + u32 device_id; + struct MPI2_RAID_SCSI_IO_REQUEST *io_request; + u16 pd_index = 0; + struct MR_FW_RAID_MAP_ALL *local_map_ptr; + struct fusion_context *fusion = instance->ctrl_context; + + io_request = cmd->io_request; + device_id = MEGASAS_DEV_INDEX(instance, scmd); + pd_index = (scmd->device->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + +scmd->device->id; + local_map_ptr = fusion->ld_map[(instance->map_id & 1)]; + + /* Check if this is a system PD I/O */ + if (instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) { + io_request->Function = 0; + io_request->DevHandle = + local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; + io_request->RaidContext.timeoutValue = + local_map_ptr->raidMap.fpPdIoTimeoutSec; + io_request->RaidContext.regLockFlags = 0; + io_request->RaidContext.regLockRowLBA = 0; + io_request->RaidContext.regLockLength = 0; + io_request->RaidContext.RAIDFlags = + MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD << + MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT; + cmd->request_desc->SCSIIO.RequestFlags = + (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY << + MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + } else { + io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; + io_request->DevHandle = device_id; + cmd->request_desc->SCSIIO.RequestFlags = + (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << + MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + } + io_request->RaidContext.VirtualDiskTgtId = device_id; + io_request->LUN[1] = scmd->device->lun; + io_request->DataLength = scsi_bufflen(scmd); +} + +/** + * megasas_build_io_fusion - Prepares IOs to devices + * @instance: Adapter soft state + * @scp: SCSI command + * @cmd: Command to be prepared + * + * Invokes helper functions to prepare request frames + * and sets flags appropriate for IO/Non-IO cmd + */ +int +megasas_build_io_fusion(struct megasas_instance *instance, + struct scsi_cmnd *scp, + struct megasas_cmd_fusion *cmd) +{ + u32 device_id, sge_count; + struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request; + + device_id = MEGASAS_DEV_INDEX(instance, scp); + + /* Zero out some fields so they don't get reused */ + io_request->LUN[1] = 0; + io_request->CDB.EEDP32.PrimaryReferenceTag = 0; + io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0; + io_request->EEDPFlags = 0; + io_request->Control = 0; + io_request->EEDPBlockSize = 0; + io_request->ChainOffset = 0; + io_request->RaidContext.RAIDFlags = 0; + io_request->RaidContext.Type = 0; + io_request->RaidContext.nseg = 0; + + memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len); + /* + * Just the CDB length,rest of the Flags are zero + * This will be modified for FP in build_ldio_fusion + */ + io_request->IoFlags = scp->cmd_len; + + if (megasas_is_ldio(scp)) + megasas_build_ldio_fusion(instance, scp, cmd); + else + megasas_build_dcdb_fusion(instance, scp, cmd); + + /* + * Construct SGL + */ + + sge_count = + megasas_make_sgl_fusion(instance, scp, + (struct MPI25_IEEE_SGE_CHAIN64 *) + &io_request->SGL, cmd); + + if (sge_count > instance->max_num_sge) { + printk(KERN_ERR "megasas: Error. sge_count (0x%x) exceeds " + "max (0x%x) allowed\n", sge_count, + instance->max_num_sge); + return 1; + } + + io_request->RaidContext.numSGE = sge_count; + + io_request->SGLFlags = MPI2_SGE_FLAGS_64_BIT_ADDRESSING; + + if (scp->sc_data_direction == PCI_DMA_TODEVICE) + io_request->Control |= MPI2_SCSIIO_CONTROL_WRITE; + else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) + io_request->Control |= MPI2_SCSIIO_CONTROL_READ; + + io_request->SGLOffset0 = + offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4; + + io_request->SenseBufferLowAddress = cmd->sense_phys_addr; + io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; + + cmd->scmd = scp; + scp->SCp.ptr = (char *)cmd; + + return 0; +} + +union MEGASAS_REQUEST_DESCRIPTOR_UNION * +megasas_get_request_descriptor(struct megasas_instance *instance, u16 index) +{ + u8 *p; + struct fusion_context *fusion; + + if (index >= instance->max_fw_cmds) { + printk(KERN_ERR "megasas: Invalid SMID (0x%x)request for " + "descriptor\n", index); + return NULL; + } + fusion = instance->ctrl_context; + p = fusion->req_frames_desc + +sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index; + + return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p; +} + +/** + * megasas_build_and_issue_cmd_fusion -Main routine for building and + * issuing non IOCTL cmd + * @instance: Adapter soft state + * @scmd: pointer to scsi cmd from OS + */ +static u32 +megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance, + struct scsi_cmnd *scmd) +{ + struct megasas_cmd_fusion *cmd; + union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; + u32 index; + struct fusion_context *fusion; + + fusion = instance->ctrl_context; + + cmd = megasas_get_cmd_fusion(instance); + if (!cmd) + return SCSI_MLQUEUE_HOST_BUSY; + + index = cmd->index; + + req_desc = megasas_get_request_descriptor(instance, index-1); + if (!req_desc) + return 1; + + req_desc->Words = 0; + cmd->request_desc = req_desc; + + if (megasas_build_io_fusion(instance, scmd, cmd)) { + megasas_return_cmd_fusion(instance, cmd); + printk(KERN_ERR "megasas: Error building command.\n"); + cmd->request_desc = NULL; + return 1; + } + + req_desc = cmd->request_desc; + req_desc->SCSIIO.SMID = index; + + if (cmd->io_request->ChainOffset != 0 && + cmd->io_request->ChainOffset != 0xF) + printk(KERN_ERR "megasas: The chain offset value is not " + "correct : %x\n", cmd->io_request->ChainOffset); + + /* + * Issue the command to the FW + */ + atomic_inc(&instance->fw_outstanding); + + instance->instancet->fire_cmd(instance, + req_desc->u.low, req_desc->u.high, + instance->reg_set); + + return 0; +} + +/** + * complete_cmd_fusion - Completes command + * @instance: Adapter soft state + * Completes all commands that is in reply descriptor queue + */ +int +complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex) +{ + union MPI2_REPLY_DESCRIPTORS_UNION *desc; + struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc; + struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req; + struct fusion_context *fusion; + struct megasas_cmd *cmd_mfi; + struct megasas_cmd_fusion *cmd_fusion; + u16 smid, num_completed; + u8 reply_descript_type, arm; + u32 status, extStatus, device_id; + union desc_value d_val; + struct LD_LOAD_BALANCE_INFO *lbinfo; + + fusion = instance->ctrl_context; + + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) + return IRQ_HANDLED; + + desc = fusion->reply_frames_desc; + desc += ((MSIxIndex * fusion->reply_alloc_sz)/ + sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)) + + fusion->last_reply_idx[MSIxIndex]; + + reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; + + d_val.word = desc->Words; + + reply_descript_type = reply_desc->ReplyFlags & + MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; + + if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) + return IRQ_NONE; + + d_val.word = desc->Words; + + num_completed = 0; + + while ((d_val.u.low != UINT_MAX) && (d_val.u.high != UINT_MAX)) { + smid = reply_desc->SMID; + + cmd_fusion = fusion->cmd_list[smid - 1]; + + scsi_io_req = + (struct MPI2_RAID_SCSI_IO_REQUEST *) + cmd_fusion->io_request; + + if (cmd_fusion->scmd) + cmd_fusion->scmd->SCp.ptr = NULL; + + status = scsi_io_req->RaidContext.status; + extStatus = scsi_io_req->RaidContext.exStatus; + + switch (scsi_io_req->Function) { + case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/ + /* Update load balancing info */ + device_id = MEGASAS_DEV_INDEX(instance, + cmd_fusion->scmd); + lbinfo = &fusion->load_balance_info[device_id]; + if (cmd_fusion->scmd->SCp.Status & + MEGASAS_LOAD_BALANCE_FLAG) { + arm = lbinfo->raid1DevHandle[0] == + cmd_fusion->io_request->DevHandle ? 0 : + 1; + atomic_dec(&lbinfo->scsi_pending_cmds[arm]); + cmd_fusion->scmd->SCp.Status &= + ~MEGASAS_LOAD_BALANCE_FLAG; + } + if (reply_descript_type == + MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) { + if (megasas_dbg_lvl == 5) + printk(KERN_ERR "\nmegasas: FAST Path " + "IO Success\n"); + } + /* Fall thru and complete IO */ + case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */ + /* Map the FW Cmd Status */ + map_cmd_status(cmd_fusion, status, extStatus); + scsi_dma_unmap(cmd_fusion->scmd); + cmd_fusion->scmd->scsi_done(cmd_fusion->scmd); + scsi_io_req->RaidContext.status = 0; + scsi_io_req->RaidContext.exStatus = 0; + megasas_return_cmd_fusion(instance, cmd_fusion); + atomic_dec(&instance->fw_outstanding); + + break; + case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */ + cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; + megasas_complete_cmd(instance, cmd_mfi, DID_OK); + cmd_fusion->flags = 0; + megasas_return_cmd_fusion(instance, cmd_fusion); + + break; + } + + fusion->last_reply_idx[MSIxIndex]++; + if (fusion->last_reply_idx[MSIxIndex] >= + fusion->reply_q_depth) + fusion->last_reply_idx[MSIxIndex] = 0; + + desc->Words = ULLONG_MAX; + num_completed++; + + /* Get the next reply descriptor */ + if (!fusion->last_reply_idx[MSIxIndex]) + desc = fusion->reply_frames_desc + + ((MSIxIndex * fusion->reply_alloc_sz)/ + sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)); + else + desc++; + + reply_desc = + (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; + + d_val.word = desc->Words; + + reply_descript_type = reply_desc->ReplyFlags & + MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; + + if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) + break; + } + + if (!num_completed) + return IRQ_NONE; + + wmb(); + writel((MSIxIndex << 24) | fusion->last_reply_idx[MSIxIndex], + &instance->reg_set->reply_post_host_index); + megasas_check_and_restore_queue_depth(instance); + return IRQ_HANDLED; +} + +/** + * megasas_complete_cmd_dpc_fusion - Completes command + * @instance: Adapter soft state + * + * Tasklet to complete cmds + */ +void +megasas_complete_cmd_dpc_fusion(unsigned long instance_addr) +{ + struct megasas_instance *instance = + (struct megasas_instance *)instance_addr; + unsigned long flags; + u32 count, MSIxIndex; + + count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; + + /* If we have already declared adapter dead, donot complete cmds */ + spin_lock_irqsave(&instance->hba_lock, flags); + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { + spin_unlock_irqrestore(&instance->hba_lock, flags); + return; + } + spin_unlock_irqrestore(&instance->hba_lock, flags); + + spin_lock_irqsave(&instance->completion_lock, flags); + for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++) + complete_cmd_fusion(instance, MSIxIndex); + spin_unlock_irqrestore(&instance->completion_lock, flags); +} + +/** + * megasas_isr_fusion - isr entry point + */ +irqreturn_t megasas_isr_fusion(int irq, void *devp) +{ + struct megasas_irq_context *irq_context = devp; + struct megasas_instance *instance = irq_context->instance; + u32 mfiStatus, fw_state; + + if (!instance->msix_vectors) { + mfiStatus = instance->instancet->clear_intr(instance->reg_set); + if (!mfiStatus) + return IRQ_NONE; + } + + /* If we are resetting, bail */ + if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) { + instance->instancet->clear_intr(instance->reg_set); + return IRQ_HANDLED; + } + + if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) { + instance->instancet->clear_intr(instance->reg_set); + /* If we didn't complete any commands, check for FW fault */ + fw_state = instance->instancet->read_fw_status_reg( + instance->reg_set) & MFI_STATE_MASK; + if (fw_state == MFI_STATE_FAULT) + schedule_work(&instance->work_init); + } + + return IRQ_HANDLED; +} + +/** + * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru + * @instance: Adapter soft state + * mfi_cmd: megasas_cmd pointer + * + */ +u8 +build_mpt_mfi_pass_thru(struct megasas_instance *instance, + struct megasas_cmd *mfi_cmd) +{ + struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain; + struct MPI2_RAID_SCSI_IO_REQUEST *io_req; + struct megasas_cmd_fusion *cmd; + struct fusion_context *fusion; + struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr; + + cmd = megasas_get_cmd_fusion(instance); + if (!cmd) + return 1; + + /* Save the smid. To be used for returning the cmd */ + mfi_cmd->context.smid = cmd->index; + + cmd->sync_cmd_idx = mfi_cmd->index; + + /* + * For cmds where the flag is set, store the flag and check + * on completion. For cmds with this flag, don't call + * megasas_complete_cmd + */ + + if (frame_hdr->flags & MFI_FRAME_DONT_POST_IN_REPLY_QUEUE) + cmd->flags = MFI_FRAME_DONT_POST_IN_REPLY_QUEUE; + + fusion = instance->ctrl_context; + io_req = cmd->io_request; + + if (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) { + struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = + (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL; + sgl_ptr_end += fusion->max_sge_in_main_msg - 1; + sgl_ptr_end->Flags = 0; + } + + mpi25_ieee_chain = + (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain; + + io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST; + io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, + SGL) / 4; + io_req->ChainOffset = fusion->chain_offset_mfi_pthru; + + mpi25_ieee_chain->Address = mfi_cmd->frame_phys_addr; + + mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | + MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR; + + mpi25_ieee_chain->Length = MEGASAS_MAX_SZ_CHAIN_FRAME; + + return 0; +} + +/** + * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd + * @instance: Adapter soft state + * @cmd: mfi cmd to build + * + */ +union MEGASAS_REQUEST_DESCRIPTOR_UNION * +build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) +{ + union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; + u16 index; + + if (build_mpt_mfi_pass_thru(instance, cmd)) { + printk(KERN_ERR "Couldn't build MFI pass thru cmd\n"); + return NULL; + } + + index = cmd->context.smid; + + req_desc = megasas_get_request_descriptor(instance, index - 1); + + if (!req_desc) + return NULL; + + req_desc->Words = 0; + req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << + MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + + req_desc->SCSIIO.SMID = index; + + return req_desc; +} + +/** + * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd + * @instance: Adapter soft state + * @cmd: mfi cmd pointer + * + */ +void +megasas_issue_dcmd_fusion(struct megasas_instance *instance, + struct megasas_cmd *cmd) +{ + union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; + + req_desc = build_mpt_cmd(instance, cmd); + if (!req_desc) { + printk(KERN_ERR "Couldn't issue MFI pass thru cmd\n"); + return; + } + instance->instancet->fire_cmd(instance, req_desc->u.low, + req_desc->u.high, instance->reg_set); +} + +/** + * megasas_release_fusion - Reverses the FW initialization + * @intance: Adapter soft state + */ +void +megasas_release_fusion(struct megasas_instance *instance) +{ + megasas_free_cmds(instance); + megasas_free_cmds_fusion(instance); + + iounmap(instance->reg_set); + + pci_release_selected_regions(instance->pdev, instance->bar); +} + +/** + * megasas_read_fw_status_reg_fusion - returns the current FW status value + * @regs: MFI register set + */ +static u32 +megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs) +{ + return readl(&(regs)->outbound_scratch_pad); +} + +/** + * megasas_adp_reset_fusion - For controller reset + * @regs: MFI register set + */ +static int +megasas_adp_reset_fusion(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + return 0; +} + +/** + * megasas_check_reset_fusion - For controller reset check + * @regs: MFI register set + */ +static int +megasas_check_reset_fusion(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + return 0; +} + +/* This function waits for outstanding commands on fusion to complete */ +int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance) +{ + int i, outstanding, retval = 0; + u32 fw_state, wait_time = MEGASAS_RESET_WAIT_TIME; + + for (i = 0; i < wait_time; i++) { + /* Check if firmware is in fault state */ + fw_state = instance->instancet->read_fw_status_reg( + instance->reg_set) & MFI_STATE_MASK; + if (fw_state == MFI_STATE_FAULT) { + printk(KERN_WARNING "megasas: Found FW in FAULT state," + " will reset adapter.\n"); + retval = 1; + goto out; + } + + outstanding = atomic_read(&instance->fw_outstanding); + if (!outstanding) + goto out; + + if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { + printk(KERN_NOTICE "megasas: [%2d]waiting for %d " + "commands to complete\n", i, outstanding); + megasas_complete_cmd_dpc_fusion( + (unsigned long)instance); + } + msleep(1000); + } + + if (atomic_read(&instance->fw_outstanding)) { + printk("megaraid_sas: pending commands remain after waiting, " + "will reset adapter.\n"); + retval = 1; + } +out: + return retval; +} + +void megasas_reset_reply_desc(struct megasas_instance *instance) +{ + int i, count; + struct fusion_context *fusion; + union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; + + fusion = instance->ctrl_context; + count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; + for (i = 0 ; i < count ; i++) + fusion->last_reply_idx[i] = 0; + reply_desc = fusion->reply_frames_desc; + for (i = 0 ; i < fusion->reply_q_depth * count; i++, reply_desc++) + reply_desc->Words = ULLONG_MAX; +} + +/* Core fusion reset function */ +int megasas_reset_fusion(struct Scsi_Host *shost) +{ + int retval = SUCCESS, i, j, retry = 0; + struct megasas_instance *instance; + struct megasas_cmd_fusion *cmd_fusion; + struct fusion_context *fusion; + struct megasas_cmd *cmd_mfi; + union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; + u32 host_diag, abs_state, status_reg, reset_adapter; + + instance = (struct megasas_instance *)shost->hostdata; + fusion = instance->ctrl_context; + + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { + printk(KERN_WARNING "megaraid_sas: Hardware critical error, " + "returning FAILED.\n"); + return FAILED; + } + + mutex_lock(&instance->reset_mutex); + set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); + instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; + instance->instancet->disable_intr(instance->reg_set); + msleep(1000); + + /* First try waiting for commands to complete */ + if (megasas_wait_for_outstanding_fusion(instance)) { + printk(KERN_WARNING "megaraid_sas: resetting fusion " + "adapter.\n"); + /* Now return commands back to the OS */ + for (i = 0 ; i < instance->max_fw_cmds; i++) { + cmd_fusion = fusion->cmd_list[i]; + if (cmd_fusion->scmd) { + scsi_dma_unmap(cmd_fusion->scmd); + cmd_fusion->scmd->result = (DID_RESET << 16); + cmd_fusion->scmd->scsi_done(cmd_fusion->scmd); + megasas_return_cmd_fusion(instance, cmd_fusion); + atomic_dec(&instance->fw_outstanding); + } + } + + status_reg = instance->instancet->read_fw_status_reg( + instance->reg_set); + abs_state = status_reg & MFI_STATE_MASK; + reset_adapter = status_reg & MFI_RESET_ADAPTER; + if (instance->disableOnlineCtrlReset || + (abs_state == MFI_STATE_FAULT && !reset_adapter)) { + /* Reset not supported, kill adapter */ + printk(KERN_WARNING "megaraid_sas: Reset not supported" + ", killing adapter.\n"); + megaraid_sas_kill_hba(instance); + instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; + retval = FAILED; + goto out; + } + + /* Now try to reset the chip */ + for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) { + writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, + &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_1ST_KEY_VALUE, + &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_2ND_KEY_VALUE, + &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_3RD_KEY_VALUE, + &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_4TH_KEY_VALUE, + &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_5TH_KEY_VALUE, + &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_6TH_KEY_VALUE, + &instance->reg_set->fusion_seq_offset); + + /* Check that the diag write enable (DRWE) bit is on */ + host_diag = readl(&instance->reg_set->fusion_host_diag); + retry = 0; + while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) { + msleep(100); + host_diag = + readl(&instance->reg_set->fusion_host_diag); + if (retry++ == 100) { + printk(KERN_WARNING "megaraid_sas: " + "Host diag unlock failed!\n"); + break; + } + } + if (!(host_diag & HOST_DIAG_WRITE_ENABLE)) + continue; + + /* Send chip reset command */ + writel(host_diag | HOST_DIAG_RESET_ADAPTER, + &instance->reg_set->fusion_host_diag); + msleep(3000); + + /* Make sure reset adapter bit is cleared */ + host_diag = readl(&instance->reg_set->fusion_host_diag); + retry = 0; + while (host_diag & HOST_DIAG_RESET_ADAPTER) { + msleep(100); + host_diag = + readl(&instance->reg_set->fusion_host_diag); + if (retry++ == 1000) { + printk(KERN_WARNING "megaraid_sas: " + "Diag reset adapter never " + "cleared!\n"); + break; + } + } + if (host_diag & HOST_DIAG_RESET_ADAPTER) + continue; + + abs_state = + instance->instancet->read_fw_status_reg( + instance->reg_set) & MFI_STATE_MASK; + retry = 0; + + while ((abs_state <= MFI_STATE_FW_INIT) && + (retry++ < 1000)) { + msleep(100); + abs_state = + instance->instancet->read_fw_status_reg( + instance->reg_set) & MFI_STATE_MASK; + } + if (abs_state <= MFI_STATE_FW_INIT) { + printk(KERN_WARNING "megaraid_sas: firmware " + "state < MFI_STATE_FW_INIT, state = " + "0x%x\n", abs_state); + continue; + } + + /* Wait for FW to become ready */ + if (megasas_transition_to_ready(instance, 1)) { + printk(KERN_WARNING "megaraid_sas: Failed to " + "transition controller to ready.\n"); + continue; + } + + megasas_reset_reply_desc(instance); + if (megasas_ioc_init_fusion(instance)) { + printk(KERN_WARNING "megaraid_sas: " + "megasas_ioc_init_fusion() failed!\n"); + continue; + } + + clear_bit(MEGASAS_FUSION_IN_RESET, + &instance->reset_flags); + instance->instancet->enable_intr(instance->reg_set); + instance->adprecovery = MEGASAS_HBA_OPERATIONAL; + + /* Re-fire management commands */ + for (j = 0 ; j < instance->max_fw_cmds; j++) { + cmd_fusion = fusion->cmd_list[j]; + if (cmd_fusion->sync_cmd_idx != + (u32)ULONG_MAX) { + cmd_mfi = + instance-> + cmd_list[cmd_fusion->sync_cmd_idx]; + if (cmd_mfi->frame->dcmd.opcode == + MR_DCMD_LD_MAP_GET_INFO) { + megasas_return_cmd(instance, + cmd_mfi); + megasas_return_cmd_fusion( + instance, cmd_fusion); + } else { + req_desc = + megasas_get_request_descriptor( + instance, + cmd_mfi->context.smid + -1); + if (!req_desc) + printk(KERN_WARNING + "req_desc NULL" + "\n"); + else { + instance->instancet-> + fire_cmd(instance, + req_desc-> + u.low, + req_desc-> + u.high, + instance-> + reg_set); + } + } + } + } + + /* Reset load balance info */ + memset(fusion->load_balance_info, 0, + sizeof(struct LD_LOAD_BALANCE_INFO) + *MAX_LOGICAL_DRIVES); + + if (!megasas_get_map_info(instance)) + megasas_sync_map_info(instance); + + /* Adapter reset completed successfully */ + printk(KERN_WARNING "megaraid_sas: Reset " + "successful.\n"); + retval = SUCCESS; + goto out; + } + /* Reset failed, kill the adapter */ + printk(KERN_WARNING "megaraid_sas: Reset failed, killing " + "adapter.\n"); + megaraid_sas_kill_hba(instance); + retval = FAILED; + } else { + clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); + instance->instancet->enable_intr(instance->reg_set); + instance->adprecovery = MEGASAS_HBA_OPERATIONAL; + } +out: + clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); + mutex_unlock(&instance->reset_mutex); + return retval; +} + +/* Fusion OCR work queue */ +void megasas_fusion_ocr_wq(struct work_struct *work) +{ + struct megasas_instance *instance = + container_of(work, struct megasas_instance, work_init); + + megasas_reset_fusion(instance->host); +} + +struct megasas_instance_template megasas_instance_template_fusion = { + .fire_cmd = megasas_fire_cmd_fusion, + .enable_intr = megasas_enable_intr_fusion, + .disable_intr = megasas_disable_intr_fusion, + .clear_intr = megasas_clear_intr_fusion, + .read_fw_status_reg = megasas_read_fw_status_reg_fusion, + .adp_reset = megasas_adp_reset_fusion, + .check_reset = megasas_check_reset_fusion, + .service_isr = megasas_isr_fusion, + .tasklet = megasas_complete_cmd_dpc_fusion, + .init_adapter = megasas_init_adapter_fusion, + .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion, + .issue_dcmd = megasas_issue_dcmd_fusion, +}; diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h new file mode 100644 index 00000000..088c9f91 --- /dev/null +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h @@ -0,0 +1,706 @@ +/* + * Linux MegaRAID driver for SAS based RAID controllers + * + * Copyright (c) 2009-2011 LSI Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * FILE: megaraid_sas_fusion.h + * + * Authors: LSI Corporation + * Manoj Jose + * Sumant Patro + * + * Send feedback to: <megaraidlinux@lsi.com> + * + * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 + * ATTN: Linuxraid + */ + +#ifndef _MEGARAID_SAS_FUSION_H_ +#define _MEGARAID_SAS_FUSION_H_ + +/* Fusion defines */ +#define MEGASAS_MAX_SZ_CHAIN_FRAME 1024 +#define MFI_FUSION_ENABLE_INTERRUPT_MASK (0x00000009) +#define MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 256 +#define MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST 0xF0 +#define MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST 0xF1 +#define MEGASAS_LOAD_BALANCE_FLAG 0x1 +#define MEGASAS_DCMD_MBOX_PEND_FLAG 0x1 +#define HOST_DIAG_WRITE_ENABLE 0x80 +#define HOST_DIAG_RESET_ADAPTER 0x4 +#define MEGASAS_FUSION_MAX_RESET_TRIES 3 +#define MAX_MSIX_QUEUES_FUSION 16 + +/* Invader defines */ +#define MPI2_TYPE_CUDA 0x2 +#define MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH 0x4000 +#define MR_RL_FLAGS_GRANT_DESTINATION_CPU0 0x00 +#define MR_RL_FLAGS_GRANT_DESTINATION_CPU1 0x10 +#define MR_RL_FLAGS_GRANT_DESTINATION_CUDA 0x80 +#define MR_RL_FLAGS_SEQ_NUM_ENABLE 0x8 + +/* T10 PI defines */ +#define MR_PROT_INFO_TYPE_CONTROLLER 0x8 +#define MEGASAS_SCSI_VARIABLE_LENGTH_CMD 0x7f +#define MEGASAS_SCSI_SERVICE_ACTION_READ32 0x9 +#define MEGASAS_SCSI_SERVICE_ACTION_WRITE32 0xB +#define MEGASAS_SCSI_ADDL_CDB_LEN 0x18 +#define MEGASAS_RD_WR_PROTECT_CHECK_ALL 0x20 +#define MEGASAS_RD_WR_PROTECT_CHECK_NONE 0x60 +#define MEGASAS_EEDPBLOCKSIZE 512 + +/* + * Raid context flags + */ + +#define MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT 0x4 +#define MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_MASK 0x30 +enum MR_RAID_FLAGS_IO_SUB_TYPE { + MR_RAID_FLAGS_IO_SUB_TYPE_NONE = 0, + MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD = 1, +}; + +/* + * Request descriptor types + */ +#define MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO 0x7 +#define MEGASAS_REQ_DESCRIPT_FLAGS_MFA 0x1 +#define MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK 0x2 +#define MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT 1 + +#define MEGASAS_FP_CMD_LEN 16 +#define MEGASAS_FUSION_IN_RESET 0 + +/* + * Raid Context structure which describes MegaRAID specific IO Paramenters + * This resides at offset 0x60 where the SGL normally starts in MPT IO Frames + */ + +struct RAID_CONTEXT { + u8 Type:4; + u8 nseg:4; + u8 resvd0; + u16 timeoutValue; + u8 regLockFlags; + u8 resvd1; + u16 VirtualDiskTgtId; + u64 regLockRowLBA; + u32 regLockLength; + u16 nextLMId; + u8 exStatus; + u8 status; + u8 RAIDFlags; + u8 numSGE; + u16 configSeqNum; + u8 spanArm; + u8 resvd2[3]; +}; + +#define RAID_CTX_SPANARM_ARM_SHIFT (0) +#define RAID_CTX_SPANARM_ARM_MASK (0x1f) + +#define RAID_CTX_SPANARM_SPAN_SHIFT (5) +#define RAID_CTX_SPANARM_SPAN_MASK (0xE0) + +/* + * define region lock types + */ +enum REGION_TYPE { + REGION_TYPE_UNUSED = 0, + REGION_TYPE_SHARED_READ = 1, + REGION_TYPE_SHARED_WRITE = 2, + REGION_TYPE_EXCLUSIVE = 3, +}; + +/* MPI2 defines */ +#define MPI2_FUNCTION_IOC_INIT (0x02) /* IOC Init */ +#define MPI2_WHOINIT_HOST_DRIVER (0x04) +#define MPI2_VERSION_MAJOR (0x02) +#define MPI2_VERSION_MINOR (0x00) +#define MPI2_VERSION_MAJOR_MASK (0xFF00) +#define MPI2_VERSION_MAJOR_SHIFT (8) +#define MPI2_VERSION_MINOR_MASK (0x00FF) +#define MPI2_VERSION_MINOR_SHIFT (0) +#define MPI2_VERSION ((MPI2_VERSION_MAJOR << MPI2_VERSION_MAJOR_SHIFT) | \ + MPI2_VERSION_MINOR) +#define MPI2_HEADER_VERSION_UNIT (0x10) +#define MPI2_HEADER_VERSION_DEV (0x00) +#define MPI2_HEADER_VERSION_UNIT_MASK (0xFF00) +#define MPI2_HEADER_VERSION_UNIT_SHIFT (8) +#define MPI2_HEADER_VERSION_DEV_MASK (0x00FF) +#define MPI2_HEADER_VERSION_DEV_SHIFT (0) +#define MPI2_HEADER_VERSION ((MPI2_HEADER_VERSION_UNIT << 8) | \ + MPI2_HEADER_VERSION_DEV) +#define MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR (0x03) +#define MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG (0x8000) +#define MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG (0x0400) +#define MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP (0x0003) +#define MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG (0x0200) +#define MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD (0x0100) +#define MPI2_SCSIIO_EEDPFLAGS_INSERT_OP (0x0004) +#define MPI2_FUNCTION_SCSI_IO_REQUEST (0x00) /* SCSI IO */ +#define MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY (0x06) +#define MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO (0x00) +#define MPI2_SGE_FLAGS_64_BIT_ADDRESSING (0x02) +#define MPI2_SCSIIO_CONTROL_WRITE (0x01000000) +#define MPI2_SCSIIO_CONTROL_READ (0x02000000) +#define MPI2_REQ_DESCRIPT_FLAGS_TYPE_MASK (0x0E) +#define MPI2_RPY_DESCRIPT_FLAGS_UNUSED (0x0F) +#define MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS (0x00) +#define MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK (0x0F) +#define MPI2_WRSEQ_FLUSH_KEY_VALUE (0x0) +#define MPI2_WRITE_SEQUENCE_OFFSET (0x00000004) +#define MPI2_WRSEQ_1ST_KEY_VALUE (0xF) +#define MPI2_WRSEQ_2ND_KEY_VALUE (0x4) +#define MPI2_WRSEQ_3RD_KEY_VALUE (0xB) +#define MPI2_WRSEQ_4TH_KEY_VALUE (0x2) +#define MPI2_WRSEQ_5TH_KEY_VALUE (0x7) +#define MPI2_WRSEQ_6TH_KEY_VALUE (0xD) + +struct MPI25_IEEE_SGE_CHAIN64 { + u64 Address; + u32 Length; + u16 Reserved1; + u8 NextChainOffset; + u8 Flags; +}; + +struct MPI2_SGE_SIMPLE_UNION { + u32 FlagsLength; + union { + u32 Address32; + u64 Address64; + } u; +}; + +struct MPI2_SCSI_IO_CDB_EEDP32 { + u8 CDB[20]; /* 0x00 */ + u32 PrimaryReferenceTag; /* 0x14 */ + u16 PrimaryApplicationTag; /* 0x18 */ + u16 PrimaryApplicationTagMask; /* 0x1A */ + u32 TransferLength; /* 0x1C */ +}; + +struct MPI2_SGE_CHAIN_UNION { + u16 Length; + u8 NextChainOffset; + u8 Flags; + union { + u32 Address32; + u64 Address64; + } u; +}; + +struct MPI2_IEEE_SGE_SIMPLE32 { + u32 Address; + u32 FlagsLength; +}; + +struct MPI2_IEEE_SGE_CHAIN32 { + u32 Address; + u32 FlagsLength; +}; + +struct MPI2_IEEE_SGE_SIMPLE64 { + u64 Address; + u32 Length; + u16 Reserved1; + u8 Reserved2; + u8 Flags; +}; + +struct MPI2_IEEE_SGE_CHAIN64 { + u64 Address; + u32 Length; + u16 Reserved1; + u8 Reserved2; + u8 Flags; +}; + +union MPI2_IEEE_SGE_SIMPLE_UNION { + struct MPI2_IEEE_SGE_SIMPLE32 Simple32; + struct MPI2_IEEE_SGE_SIMPLE64 Simple64; +}; + +union MPI2_IEEE_SGE_CHAIN_UNION { + struct MPI2_IEEE_SGE_CHAIN32 Chain32; + struct MPI2_IEEE_SGE_CHAIN64 Chain64; +}; + +union MPI2_SGE_IO_UNION { + struct MPI2_SGE_SIMPLE_UNION MpiSimple; + struct MPI2_SGE_CHAIN_UNION MpiChain; + union MPI2_IEEE_SGE_SIMPLE_UNION IeeeSimple; + union MPI2_IEEE_SGE_CHAIN_UNION IeeeChain; +}; + +union MPI2_SCSI_IO_CDB_UNION { + u8 CDB32[32]; + struct MPI2_SCSI_IO_CDB_EEDP32 EEDP32; + struct MPI2_SGE_SIMPLE_UNION SGE; +}; + +/* + * RAID SCSI IO Request Message + * Total SGE count will be one less than _MPI2_SCSI_IO_REQUEST + */ +struct MPI2_RAID_SCSI_IO_REQUEST { + u16 DevHandle; /* 0x00 */ + u8 ChainOffset; /* 0x02 */ + u8 Function; /* 0x03 */ + u16 Reserved1; /* 0x04 */ + u8 Reserved2; /* 0x06 */ + u8 MsgFlags; /* 0x07 */ + u8 VP_ID; /* 0x08 */ + u8 VF_ID; /* 0x09 */ + u16 Reserved3; /* 0x0A */ + u32 SenseBufferLowAddress; /* 0x0C */ + u16 SGLFlags; /* 0x10 */ + u8 SenseBufferLength; /* 0x12 */ + u8 Reserved4; /* 0x13 */ + u8 SGLOffset0; /* 0x14 */ + u8 SGLOffset1; /* 0x15 */ + u8 SGLOffset2; /* 0x16 */ + u8 SGLOffset3; /* 0x17 */ + u32 SkipCount; /* 0x18 */ + u32 DataLength; /* 0x1C */ + u32 BidirectionalDataLength; /* 0x20 */ + u16 IoFlags; /* 0x24 */ + u16 EEDPFlags; /* 0x26 */ + u32 EEDPBlockSize; /* 0x28 */ + u32 SecondaryReferenceTag; /* 0x2C */ + u16 SecondaryApplicationTag; /* 0x30 */ + u16 ApplicationTagTranslationMask; /* 0x32 */ + u8 LUN[8]; /* 0x34 */ + u32 Control; /* 0x3C */ + union MPI2_SCSI_IO_CDB_UNION CDB; /* 0x40 */ + struct RAID_CONTEXT RaidContext; /* 0x60 */ + union MPI2_SGE_IO_UNION SGL; /* 0x80 */ +}; + +/* + * MPT RAID MFA IO Descriptor. + */ +struct MEGASAS_RAID_MFA_IO_REQUEST_DESCRIPTOR { + u32 RequestFlags:8; + u32 MessageAddress1:24; /* bits 31:8*/ + u32 MessageAddress2; /* bits 61:32 */ +}; + +/* Default Request Descriptor */ +struct MPI2_DEFAULT_REQUEST_DESCRIPTOR { + u8 RequestFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u16 LMID; /* 0x04 */ + u16 DescriptorTypeDependent; /* 0x06 */ +}; + +/* High Priority Request Descriptor */ +struct MPI2_HIGH_PRIORITY_REQUEST_DESCRIPTOR { + u8 RequestFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u16 LMID; /* 0x04 */ + u16 Reserved1; /* 0x06 */ +}; + +/* SCSI IO Request Descriptor */ +struct MPI2_SCSI_IO_REQUEST_DESCRIPTOR { + u8 RequestFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u16 LMID; /* 0x04 */ + u16 DevHandle; /* 0x06 */ +}; + +/* SCSI Target Request Descriptor */ +struct MPI2_SCSI_TARGET_REQUEST_DESCRIPTOR { + u8 RequestFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u16 LMID; /* 0x04 */ + u16 IoIndex; /* 0x06 */ +}; + +/* RAID Accelerator Request Descriptor */ +struct MPI2_RAID_ACCEL_REQUEST_DESCRIPTOR { + u8 RequestFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u16 LMID; /* 0x04 */ + u16 Reserved; /* 0x06 */ +}; + +/* union of Request Descriptors */ +union MEGASAS_REQUEST_DESCRIPTOR_UNION { + struct MPI2_DEFAULT_REQUEST_DESCRIPTOR Default; + struct MPI2_HIGH_PRIORITY_REQUEST_DESCRIPTOR HighPriority; + struct MPI2_SCSI_IO_REQUEST_DESCRIPTOR SCSIIO; + struct MPI2_SCSI_TARGET_REQUEST_DESCRIPTOR SCSITarget; + struct MPI2_RAID_ACCEL_REQUEST_DESCRIPTOR RAIDAccelerator; + struct MEGASAS_RAID_MFA_IO_REQUEST_DESCRIPTOR MFAIo; + union { + struct { + u32 low; + u32 high; + } u; + u64 Words; + }; +}; + +/* Default Reply Descriptor */ +struct MPI2_DEFAULT_REPLY_DESCRIPTOR { + u8 ReplyFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 DescriptorTypeDependent1; /* 0x02 */ + u32 DescriptorTypeDependent2; /* 0x04 */ +}; + +/* Address Reply Descriptor */ +struct MPI2_ADDRESS_REPLY_DESCRIPTOR { + u8 ReplyFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u32 ReplyFrameAddress; /* 0x04 */ +}; + +/* SCSI IO Success Reply Descriptor */ +struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR { + u8 ReplyFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u16 TaskTag; /* 0x04 */ + u16 Reserved1; /* 0x06 */ +}; + +/* TargetAssist Success Reply Descriptor */ +struct MPI2_TARGETASSIST_SUCCESS_REPLY_DESCRIPTOR { + u8 ReplyFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u8 SequenceNumber; /* 0x04 */ + u8 Reserved1; /* 0x05 */ + u16 IoIndex; /* 0x06 */ +}; + +/* Target Command Buffer Reply Descriptor */ +struct MPI2_TARGET_COMMAND_BUFFER_REPLY_DESCRIPTOR { + u8 ReplyFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u8 VP_ID; /* 0x02 */ + u8 Flags; /* 0x03 */ + u16 InitiatorDevHandle; /* 0x04 */ + u16 IoIndex; /* 0x06 */ +}; + +/* RAID Accelerator Success Reply Descriptor */ +struct MPI2_RAID_ACCELERATOR_SUCCESS_REPLY_DESCRIPTOR { + u8 ReplyFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u32 Reserved; /* 0x04 */ +}; + +/* union of Reply Descriptors */ +union MPI2_REPLY_DESCRIPTORS_UNION { + struct MPI2_DEFAULT_REPLY_DESCRIPTOR Default; + struct MPI2_ADDRESS_REPLY_DESCRIPTOR AddressReply; + struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR SCSIIOSuccess; + struct MPI2_TARGETASSIST_SUCCESS_REPLY_DESCRIPTOR TargetAssistSuccess; + struct MPI2_TARGET_COMMAND_BUFFER_REPLY_DESCRIPTOR TargetCommandBuffer; + struct MPI2_RAID_ACCELERATOR_SUCCESS_REPLY_DESCRIPTOR + RAIDAcceleratorSuccess; + u64 Words; +}; + +/* IOCInit Request message */ +struct MPI2_IOC_INIT_REQUEST { + u8 WhoInit; /* 0x00 */ + u8 Reserved1; /* 0x01 */ + u8 ChainOffset; /* 0x02 */ + u8 Function; /* 0x03 */ + u16 Reserved2; /* 0x04 */ + u8 Reserved3; /* 0x06 */ + u8 MsgFlags; /* 0x07 */ + u8 VP_ID; /* 0x08 */ + u8 VF_ID; /* 0x09 */ + u16 Reserved4; /* 0x0A */ + u16 MsgVersion; /* 0x0C */ + u16 HeaderVersion; /* 0x0E */ + u32 Reserved5; /* 0x10 */ + u16 Reserved6; /* 0x14 */ + u8 Reserved7; /* 0x16 */ + u8 HostMSIxVectors; /* 0x17 */ + u16 Reserved8; /* 0x18 */ + u16 SystemRequestFrameSize; /* 0x1A */ + u16 ReplyDescriptorPostQueueDepth; /* 0x1C */ + u16 ReplyFreeQueueDepth; /* 0x1E */ + u32 SenseBufferAddressHigh; /* 0x20 */ + u32 SystemReplyAddressHigh; /* 0x24 */ + u64 SystemRequestFrameBaseAddress; /* 0x28 */ + u64 ReplyDescriptorPostQueueAddress;/* 0x30 */ + u64 ReplyFreeQueueAddress; /* 0x38 */ + u64 TimeStamp; /* 0x40 */ +}; + +/* mrpriv defines */ +#define MR_PD_INVALID 0xFFFF +#define MAX_SPAN_DEPTH 8 +#define MAX_RAIDMAP_SPAN_DEPTH (MAX_SPAN_DEPTH) +#define MAX_ROW_SIZE 32 +#define MAX_RAIDMAP_ROW_SIZE (MAX_ROW_SIZE) +#define MAX_LOGICAL_DRIVES 64 +#define MAX_RAIDMAP_LOGICAL_DRIVES (MAX_LOGICAL_DRIVES) +#define MAX_RAIDMAP_VIEWS (MAX_LOGICAL_DRIVES) +#define MAX_ARRAYS 128 +#define MAX_RAIDMAP_ARRAYS (MAX_ARRAYS) +#define MAX_PHYSICAL_DEVICES 256 +#define MAX_RAIDMAP_PHYSICAL_DEVICES (MAX_PHYSICAL_DEVICES) +#define MR_DCMD_LD_MAP_GET_INFO 0x0300e101 + +struct MR_DEV_HANDLE_INFO { + u16 curDevHdl; + u8 validHandles; + u8 reserved; + u16 devHandle[2]; +}; + +struct MR_ARRAY_INFO { + u16 pd[MAX_RAIDMAP_ROW_SIZE]; +}; + +struct MR_QUAD_ELEMENT { + u64 logStart; + u64 logEnd; + u64 offsetInSpan; + u32 diff; + u32 reserved1; +}; + +struct MR_SPAN_INFO { + u32 noElements; + u32 reserved1; + struct MR_QUAD_ELEMENT quad[MAX_RAIDMAP_SPAN_DEPTH]; +}; + +struct MR_LD_SPAN { + u64 startBlk; + u64 numBlks; + u16 arrayRef; + u8 reserved[6]; +}; + +struct MR_SPAN_BLOCK_INFO { + u64 num_rows; + struct MR_LD_SPAN span; + struct MR_SPAN_INFO block_span_info; +}; + +struct MR_LD_RAID { + struct { + u32 fpCapable:1; + u32 reserved5:3; + u32 ldPiMode:4; + u32 pdPiMode:4; + u32 encryptionType:8; + u32 fpWriteCapable:1; + u32 fpReadCapable:1; + u32 fpWriteAcrossStripe:1; + u32 fpReadAcrossStripe:1; + u32 reserved4:8; + } capability; + u32 reserved6; + u64 size; + u8 spanDepth; + u8 level; + u8 stripeShift; + u8 rowSize; + u8 rowDataSize; + u8 writeMode; + u8 PRL; + u8 SRL; + u16 targetId; + u8 ldState; + u8 regTypeReqOnWrite; + u8 modFactor; + u8 regTypeReqOnRead; + u16 seqNum; + + struct { + u32 ldSyncRequired:1; + u32 reserved:31; + } flags; + + u8 reserved3[0x5C]; +}; + +struct MR_LD_SPAN_MAP { + struct MR_LD_RAID ldRaid; + u8 dataArmMap[MAX_RAIDMAP_ROW_SIZE]; + struct MR_SPAN_BLOCK_INFO spanBlock[MAX_RAIDMAP_SPAN_DEPTH]; +}; + +struct MR_FW_RAID_MAP { + u32 totalSize; + union { + struct { + u32 maxLd; + u32 maxSpanDepth; + u32 maxRowSize; + u32 maxPdCount; + u32 maxArrays; + } validationInfo; + u32 version[5]; + u32 reserved1[5]; + }; + + u32 ldCount; + u32 Reserved1; + u8 ldTgtIdToLd[MAX_RAIDMAP_LOGICAL_DRIVES+ + MAX_RAIDMAP_VIEWS]; + u8 fpPdIoTimeoutSec; + u8 reserved2[7]; + struct MR_ARRAY_INFO arMapInfo[MAX_RAIDMAP_ARRAYS]; + struct MR_DEV_HANDLE_INFO devHndlInfo[MAX_RAIDMAP_PHYSICAL_DEVICES]; + struct MR_LD_SPAN_MAP ldSpanMap[1]; +}; + +struct IO_REQUEST_INFO { + u64 ldStartBlock; + u32 numBlocks; + u16 ldTgtId; + u8 isRead; + u16 devHandle; + u64 pdBlock; + u8 fpOkForIo; +}; + +struct MR_LD_TARGET_SYNC { + u8 targetId; + u8 reserved; + u16 seqNum; +}; + +#define IEEE_SGE_FLAGS_ADDR_MASK (0x03) +#define IEEE_SGE_FLAGS_SYSTEM_ADDR (0x00) +#define IEEE_SGE_FLAGS_IOCDDR_ADDR (0x01) +#define IEEE_SGE_FLAGS_IOCPLB_ADDR (0x02) +#define IEEE_SGE_FLAGS_IOCPLBNTA_ADDR (0x03) +#define IEEE_SGE_FLAGS_CHAIN_ELEMENT (0x80) +#define IEEE_SGE_FLAGS_END_OF_LIST (0x40) + +struct megasas_register_set; +struct megasas_instance; + +union desc_word { + u64 word; + struct { + u32 low; + u32 high; + } u; +}; + +struct megasas_cmd_fusion { + struct MPI2_RAID_SCSI_IO_REQUEST *io_request; + dma_addr_t io_request_phys_addr; + + union MPI2_SGE_IO_UNION *sg_frame; + dma_addr_t sg_frame_phys_addr; + + u8 *sense; + dma_addr_t sense_phys_addr; + + struct list_head list; + struct scsi_cmnd *scmd; + struct megasas_instance *instance; + + u8 retry_for_fw_reset; + union MEGASAS_REQUEST_DESCRIPTOR_UNION *request_desc; + + /* + * Context for a MFI frame. + * Used to get the mfi cmd from list when a MFI cmd is completed + */ + u32 sync_cmd_idx; + u32 index; + u8 flags; +}; + +struct LD_LOAD_BALANCE_INFO { + u8 loadBalanceFlag; + u8 reserved1; + u16 raid1DevHandle[2]; + atomic_t scsi_pending_cmds[2]; + u64 last_accessed_block[2]; +}; + +struct MR_FW_RAID_MAP_ALL { + struct MR_FW_RAID_MAP raidMap; + struct MR_LD_SPAN_MAP ldSpanMap[MAX_LOGICAL_DRIVES - 1]; +} __attribute__ ((packed)); + +struct fusion_context { + struct megasas_cmd_fusion **cmd_list; + struct list_head cmd_pool; + + spinlock_t cmd_pool_lock; + + dma_addr_t req_frames_desc_phys; + u8 *req_frames_desc; + + struct dma_pool *io_request_frames_pool; + dma_addr_t io_request_frames_phys; + u8 *io_request_frames; + + struct dma_pool *sg_dma_pool; + struct dma_pool *sense_dma_pool; + + dma_addr_t reply_frames_desc_phys; + union MPI2_REPLY_DESCRIPTORS_UNION *reply_frames_desc; + struct dma_pool *reply_frames_desc_pool; + + u16 last_reply_idx[MAX_MSIX_QUEUES_FUSION]; + + u32 reply_q_depth; + u32 request_alloc_sz; + u32 reply_alloc_sz; + u32 io_frames_alloc_sz; + + u16 max_sge_in_main_msg; + u16 max_sge_in_chain; + + u8 chain_offset_io_request; + u8 chain_offset_mfi_pthru; + + struct MR_FW_RAID_MAP_ALL *ld_map[2]; + dma_addr_t ld_map_phys[2]; + + u32 map_sz; + u8 fast_path_io; + struct LD_LOAD_BALANCE_INFO load_balance_info[MAX_LOGICAL_DRIVES]; +}; + +union desc_value { + u64 word; + struct { + u32 low; + u32 high; + } u; +}; + +#endif /* _MEGARAID_SAS_FUSION_H_ */ |