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| author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
|---|---|---|
| committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
| commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
| tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/include/linux/libata.h | |
| parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
| download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip | |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/include/linux/libata.h')
| -rw-r--r-- | ANDROID_3.4.5/include/linux/libata.h | 1786 |
1 files changed, 0 insertions, 1786 deletions
diff --git a/ANDROID_3.4.5/include/linux/libata.h b/ANDROID_3.4.5/include/linux/libata.h deleted file mode 100644 index 6e887c74..00000000 --- a/ANDROID_3.4.5/include/linux/libata.h +++ /dev/null @@ -1,1786 +0,0 @@ -/* - * Copyright 2003-2005 Red Hat, Inc. All rights reserved. - * Copyright 2003-2005 Jeff Garzik - * - * - * 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, 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; see the file COPYING. If not, write to - * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. - * - * - * libata documentation is available via 'make {ps|pdf}docs', - * as Documentation/DocBook/libata.* - * - */ - -#ifndef __LINUX_LIBATA_H__ -#define __LINUX_LIBATA_H__ - -#include <linux/delay.h> -#include <linux/jiffies.h> -#include <linux/interrupt.h> -#include <linux/dma-mapping.h> -#include <linux/scatterlist.h> -#include <linux/io.h> -#include <linux/ata.h> -#include <linux/workqueue.h> -#include <scsi/scsi_host.h> -#include <linux/acpi.h> -#include <linux/cdrom.h> -#include <linux/sched.h> - -/* - * Define if arch has non-standard setup. This is a _PCI_ standard - * not a legacy or ISA standard. - */ -#ifdef CONFIG_ATA_NONSTANDARD -#include <asm/libata-portmap.h> -#else -#include <asm-generic/libata-portmap.h> -#endif - -/* - * compile-time options: to be removed as soon as all the drivers are - * converted to the new debugging mechanism - */ -#undef ATA_DEBUG /* debugging output */ -#undef ATA_VERBOSE_DEBUG /* yet more debugging output */ -#undef ATA_IRQ_TRAP /* define to ack screaming irqs */ -#undef ATA_NDEBUG /* define to disable quick runtime checks */ - - -/* note: prints function name for you */ -#ifdef ATA_DEBUG -#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) -#ifdef ATA_VERBOSE_DEBUG -#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) -#else -#define VPRINTK(fmt, args...) -#endif /* ATA_VERBOSE_DEBUG */ -#else -#define DPRINTK(fmt, args...) -#define VPRINTK(fmt, args...) -#endif /* ATA_DEBUG */ - -#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args) - -#define ata_print_version_once(dev, version) \ -({ \ - static bool __print_once; \ - \ - if (!__print_once) { \ - __print_once = true; \ - ata_print_version(dev, version); \ - } \ -}) - -/* NEW: debug levels */ -#define HAVE_LIBATA_MSG 1 - -enum { - ATA_MSG_DRV = 0x0001, - ATA_MSG_INFO = 0x0002, - ATA_MSG_PROBE = 0x0004, - ATA_MSG_WARN = 0x0008, - ATA_MSG_MALLOC = 0x0010, - ATA_MSG_CTL = 0x0020, - ATA_MSG_INTR = 0x0040, - ATA_MSG_ERR = 0x0080, -}; - -#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) -#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) -#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) -#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) -#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) -#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) -#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) -#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) - -static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) -{ - if (dval < 0 || dval >= (sizeof(u32) * 8)) - return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ - if (!dval) - return 0; - return (1 << dval) - 1; -} - -/* defines only for the constants which don't work well as enums */ -#define ATA_TAG_POISON 0xfafbfcfdU - -enum { - /* various global constants */ - LIBATA_MAX_PRD = ATA_MAX_PRD / 2, - LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ - ATA_DEF_QUEUE = 1, - /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ - ATA_MAX_QUEUE = 32, - ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, - ATA_SHORT_PAUSE = 16, - - ATAPI_MAX_DRAIN = 16 << 10, - - ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, - - ATA_SHT_EMULATED = 1, - ATA_SHT_CMD_PER_LUN = 1, - ATA_SHT_THIS_ID = -1, - ATA_SHT_USE_CLUSTERING = 1, - - /* struct ata_device stuff */ - ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ - ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ - ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ - ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ - ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ - ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ - ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ - ATA_DFLAG_AN = (1 << 7), /* AN configured */ - ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ - ATA_DFLAG_CFG_MASK = (1 << 12) - 1, - - ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ - ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ - ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ - ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ - ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */ - ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */ - ATA_DFLAG_INIT_MASK = (1 << 24) - 1, - - ATA_DFLAG_DETACH = (1 << 24), - ATA_DFLAG_DETACHED = (1 << 25), - - ATA_DEV_UNKNOWN = 0, /* unknown device */ - ATA_DEV_ATA = 1, /* ATA device */ - ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ - ATA_DEV_ATAPI = 3, /* ATAPI device */ - ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ - ATA_DEV_PMP = 5, /* SATA port multiplier */ - ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ - ATA_DEV_SEMB = 7, /* SEMB */ - ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ - ATA_DEV_NONE = 9, /* no device */ - - /* struct ata_link flags */ - ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ - ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ - ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ - ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ - ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, - ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ - ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ - ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ - ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */ - - /* struct ata_port flags */ - ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ - /* (doesn't imply presence) */ - ATA_FLAG_SATA = (1 << 1), - ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ - ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ - ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ - ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD - * doesn't handle PIO interrupts */ - ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ - ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */ - ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */ - ATA_FLAG_DEBUGMSG = (1 << 13), - ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */ - ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ - ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ - ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ - ATA_FLAG_AN = (1 << 18), /* controller supports AN */ - ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ - ATA_FLAG_EM = (1 << 21), /* driver supports enclosure - * management */ - ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity - * led */ - ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */ - - /* bits 24:31 of ap->flags are reserved for LLD specific flags */ - - - /* struct ata_port pflags */ - ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ - ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ - ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ - ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ - ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ - ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ - ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ - ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ - ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */ - ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */ - - ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ - ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ - ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ - - ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */ - ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */ - - /* struct ata_queued_cmd flags */ - ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ - ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ - ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ - ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ - ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ - ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ - ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ - - ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ - ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ - ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ - - /* host set flags */ - ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ - ATA_HOST_STARTED = (1 << 1), /* Host started */ - ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ - ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */ - - /* bits 24:31 of host->flags are reserved for LLD specific flags */ - - /* various lengths of time */ - ATA_TMOUT_BOOT = 30000, /* heuristic */ - ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */ - ATA_TMOUT_INTERNAL_QUICK = 5000, - ATA_TMOUT_MAX_PARK = 30000, - - /* - * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s - * is too much without parallel probing. Use 2s if parallel - * probing is available, 800ms otherwise. - */ - ATA_TMOUT_FF_WAIT_LONG = 2000, - ATA_TMOUT_FF_WAIT = 800, - - /* Spec mandates to wait for ">= 2ms" before checking status - * after reset. We wait 150ms, because that was the magic - * delay used for ATAPI devices in Hale Landis's ATADRVR, for - * the period of time between when the ATA command register is - * written, and then status is checked. Because waiting for - * "a while" before checking status is fine, post SRST, we - * perform this magic delay here as well. - * - * Old drivers/ide uses the 2mS rule and then waits for ready. - */ - ATA_WAIT_AFTER_RESET = 150, - - /* If PMP is supported, we have to do follow-up SRST. As some - * PMPs don't send D2H Reg FIS after hardreset, LLDs are - * advised to wait only for the following duration before - * doing SRST. - */ - ATA_TMOUT_PMP_SRST_WAIT = 5000, - - /* ATA bus states */ - BUS_UNKNOWN = 0, - BUS_DMA = 1, - BUS_IDLE = 2, - BUS_NOINTR = 3, - BUS_NODATA = 4, - BUS_TIMER = 5, - BUS_PIO = 6, - BUS_EDD = 7, - BUS_IDENTIFY = 8, - BUS_PACKET = 9, - - /* SATA port states */ - PORT_UNKNOWN = 0, - PORT_ENABLED = 1, - PORT_DISABLED = 2, - - /* encoding various smaller bitmaps into a single - * unsigned long bitmap - */ - ATA_NR_PIO_MODES = 7, - ATA_NR_MWDMA_MODES = 5, - ATA_NR_UDMA_MODES = 8, - - ATA_SHIFT_PIO = 0, - ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, - ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, - - /* size of buffer to pad xfers ending on unaligned boundaries */ - ATA_DMA_PAD_SZ = 4, - - /* ering size */ - ATA_ERING_SIZE = 32, - - /* return values for ->qc_defer */ - ATA_DEFER_LINK = 1, - ATA_DEFER_PORT = 2, - - /* desc_len for ata_eh_info and context */ - ATA_EH_DESC_LEN = 80, - - /* reset / recovery action types */ - ATA_EH_REVALIDATE = (1 << 0), - ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ - ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ - ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, - ATA_EH_ENABLE_LINK = (1 << 3), - ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ - - ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK, - ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | - ATA_EH_ENABLE_LINK, - - /* ata_eh_info->flags */ - ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ - ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ - ATA_EHI_QUIET = (1 << 3), /* be quiet */ - ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */ - - ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ - ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ - ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ - ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ - ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */ - - ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, - - /* mask of flags to transfer *to* the slave link */ - ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, - - /* max tries if error condition is still set after ->error_handler */ - ATA_EH_MAX_TRIES = 5, - - /* sometimes resuming a link requires several retries */ - ATA_LINK_RESUME_TRIES = 5, - - /* how hard are we gonna try to probe/recover devices */ - ATA_PROBE_MAX_TRIES = 3, - ATA_EH_DEV_TRIES = 3, - ATA_EH_PMP_TRIES = 5, - ATA_EH_PMP_LINK_TRIES = 3, - - SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ - - /* This should match the actual table size of - * ata_eh_cmd_timeout_table in libata-eh.c. - */ - ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6, - - /* Horkage types. May be set by libata or controller on drives - (some horkage may be drive/controller pair dependent */ - - ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ - ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ - ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ - ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ - ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ - ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ - ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ - ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ - ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ - ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */ - ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands - not multiple of 16 bytes */ - ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */ - ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */ - ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */ - ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */ - ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */ - - /* DMA mask for user DMA control: User visible values; DO NOT - renumber */ - ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ - ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ - ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ - - /* ATAPI command types */ - ATAPI_READ = 0, /* READs */ - ATAPI_WRITE = 1, /* WRITEs */ - ATAPI_READ_CD = 2, /* READ CD [MSF] */ - ATAPI_PASS_THRU = 3, /* SAT pass-thru */ - ATAPI_MISC = 4, /* the rest */ - - /* Timing constants */ - ATA_TIMING_SETUP = (1 << 0), - ATA_TIMING_ACT8B = (1 << 1), - ATA_TIMING_REC8B = (1 << 2), - ATA_TIMING_CYC8B = (1 << 3), - ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | - ATA_TIMING_CYC8B, - ATA_TIMING_ACTIVE = (1 << 4), - ATA_TIMING_RECOVER = (1 << 5), - ATA_TIMING_DMACK_HOLD = (1 << 6), - ATA_TIMING_CYCLE = (1 << 7), - ATA_TIMING_UDMA = (1 << 8), - ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | - ATA_TIMING_REC8B | ATA_TIMING_CYC8B | - ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | - ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | - ATA_TIMING_UDMA, - - /* ACPI constants */ - ATA_ACPI_FILTER_SETXFER = 1 << 0, - ATA_ACPI_FILTER_LOCK = 1 << 1, - ATA_ACPI_FILTER_DIPM = 1 << 2, - ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ - ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ - - ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | - ATA_ACPI_FILTER_LOCK | - ATA_ACPI_FILTER_DIPM, -}; - -enum ata_xfer_mask { - ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) - << ATA_SHIFT_PIO, - ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) - << ATA_SHIFT_MWDMA, - ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) - << ATA_SHIFT_UDMA, -}; - -enum hsm_task_states { - HSM_ST_IDLE, /* no command on going */ - HSM_ST_FIRST, /* (waiting the device to) - write CDB or first data block */ - HSM_ST, /* (waiting the device to) transfer data */ - HSM_ST_LAST, /* (waiting the device to) complete command */ - HSM_ST_ERR, /* error */ -}; - -enum ata_completion_errors { - AC_ERR_DEV = (1 << 0), /* device reported error */ - AC_ERR_HSM = (1 << 1), /* host state machine violation */ - AC_ERR_TIMEOUT = (1 << 2), /* timeout */ - AC_ERR_MEDIA = (1 << 3), /* media error */ - AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ - AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ - AC_ERR_SYSTEM = (1 << 6), /* system error */ - AC_ERR_INVALID = (1 << 7), /* invalid argument */ - AC_ERR_OTHER = (1 << 8), /* unknown */ - AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ - AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ -}; - -/* - * Link power management policy: If you alter this, you also need to - * alter libata-scsi.c (for the ascii descriptions) - */ -enum ata_lpm_policy { - ATA_LPM_UNKNOWN, - ATA_LPM_MAX_POWER, - ATA_LPM_MED_POWER, - ATA_LPM_MIN_POWER, -}; - -enum ata_lpm_hints { - ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ - ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ -}; - -/* forward declarations */ -struct scsi_device; -struct ata_port_operations; -struct ata_port; -struct ata_link; -struct ata_queued_cmd; - -/* typedefs */ -typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); -typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); -typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, - unsigned long deadline); -typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); - -extern struct device_attribute dev_attr_link_power_management_policy; -extern struct device_attribute dev_attr_unload_heads; -extern struct device_attribute dev_attr_em_message_type; -extern struct device_attribute dev_attr_em_message; -extern struct device_attribute dev_attr_sw_activity; - -enum sw_activity { - OFF, - BLINK_ON, - BLINK_OFF, -}; - -#ifdef CONFIG_ATA_SFF -struct ata_ioports { - void __iomem *cmd_addr; - void __iomem *data_addr; - void __iomem *error_addr; - void __iomem *feature_addr; - void __iomem *nsect_addr; - void __iomem *lbal_addr; - void __iomem *lbam_addr; - void __iomem *lbah_addr; - void __iomem *device_addr; - void __iomem *status_addr; - void __iomem *command_addr; - void __iomem *altstatus_addr; - void __iomem *ctl_addr; -#ifdef CONFIG_ATA_BMDMA - void __iomem *bmdma_addr; -#endif /* CONFIG_ATA_BMDMA */ - void __iomem *scr_addr; -}; -#endif /* CONFIG_ATA_SFF */ - -struct ata_host { - spinlock_t lock; - struct device *dev; - void __iomem * const *iomap; - unsigned int n_ports; - void *private_data; - struct ata_port_operations *ops; - unsigned long flags; - - struct mutex eh_mutex; - struct task_struct *eh_owner; - -#ifdef CONFIG_ATA_ACPI - acpi_handle acpi_handle; -#endif - struct ata_port *simplex_claimed; /* channel owning the DMA */ - struct ata_port *ports[0]; -}; - -struct ata_queued_cmd { - struct ata_port *ap; - struct ata_device *dev; - - struct scsi_cmnd *scsicmd; - void (*scsidone)(struct scsi_cmnd *); - - struct ata_taskfile tf; - u8 cdb[ATAPI_CDB_LEN]; - - unsigned long flags; /* ATA_QCFLAG_xxx */ - unsigned int tag; - unsigned int n_elem; - unsigned int orig_n_elem; - - int dma_dir; - - unsigned int sect_size; - - unsigned int nbytes; - unsigned int extrabytes; - unsigned int curbytes; - - struct scatterlist sgent; - - struct scatterlist *sg; - - struct scatterlist *cursg; - unsigned int cursg_ofs; - - unsigned int err_mask; - struct ata_taskfile result_tf; - ata_qc_cb_t complete_fn; - - void *private_data; - void *lldd_task; -}; - -struct ata_port_stats { - unsigned long unhandled_irq; - unsigned long idle_irq; - unsigned long rw_reqbuf; -}; - -struct ata_ering_entry { - unsigned int eflags; - unsigned int err_mask; - u64 timestamp; -}; - -struct ata_ering { - int cursor; - struct ata_ering_entry ring[ATA_ERING_SIZE]; -}; - -struct ata_device { - struct ata_link *link; - unsigned int devno; /* 0 or 1 */ - unsigned int horkage; /* List of broken features */ - unsigned long flags; /* ATA_DFLAG_xxx */ - struct scsi_device *sdev; /* attached SCSI device */ - void *private_data; -#ifdef CONFIG_ATA_ACPI - acpi_handle acpi_handle; - union acpi_object *gtf_cache; - unsigned int gtf_filter; -#endif - struct device tdev; - /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ - u64 n_sectors; /* size of device, if ATA */ - u64 n_native_sectors; /* native size, if ATA */ - unsigned int class; /* ATA_DEV_xxx */ - unsigned long unpark_deadline; - - u8 pio_mode; - u8 dma_mode; - u8 xfer_mode; - unsigned int xfer_shift; /* ATA_SHIFT_xxx */ - - unsigned int multi_count; /* sectors count for - READ/WRITE MULTIPLE */ - unsigned int max_sectors; /* per-device max sectors */ - unsigned int cdb_len; - - /* per-dev xfer mask */ - unsigned long pio_mask; - unsigned long mwdma_mask; - unsigned long udma_mask; - - /* for CHS addressing */ - u16 cylinders; /* Number of cylinders */ - u16 heads; /* Number of heads */ - u16 sectors; /* Number of sectors per track */ - - union { - u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ - u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ - }; - - /* error history */ - int spdn_cnt; - /* ering is CLEAR_END, read comment above CLEAR_END */ - struct ata_ering ering; -}; - -/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are - * cleared to zero on ata_dev_init(). - */ -#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) -#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) - -struct ata_eh_info { - struct ata_device *dev; /* offending device */ - u32 serror; /* SError from LLDD */ - unsigned int err_mask; /* port-wide err_mask */ - unsigned int action; /* ATA_EH_* action mask */ - unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ - unsigned int flags; /* ATA_EHI_* flags */ - - unsigned int probe_mask; - - char desc[ATA_EH_DESC_LEN]; - int desc_len; -}; - -struct ata_eh_context { - struct ata_eh_info i; - int tries[ATA_MAX_DEVICES]; - int cmd_timeout_idx[ATA_MAX_DEVICES] - [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; - unsigned int classes[ATA_MAX_DEVICES]; - unsigned int did_probe_mask; - unsigned int unloaded_mask; - unsigned int saved_ncq_enabled; - u8 saved_xfer_mode[ATA_MAX_DEVICES]; - /* timestamp for the last reset attempt or success */ - unsigned long last_reset; -}; - -struct ata_acpi_drive -{ - u32 pio; - u32 dma; -} __packed; - -struct ata_acpi_gtm { - struct ata_acpi_drive drive[2]; - u32 flags; -} __packed; - -struct ata_link { - struct ata_port *ap; - int pmp; /* port multiplier port # */ - - struct device tdev; - unsigned int active_tag; /* active tag on this link */ - u32 sactive; /* active NCQ commands */ - - unsigned int flags; /* ATA_LFLAG_xxx */ - - u32 saved_scontrol; /* SControl on probe */ - unsigned int hw_sata_spd_limit; - unsigned int sata_spd_limit; - unsigned int sata_spd; /* current SATA PHY speed */ - enum ata_lpm_policy lpm_policy; - - /* record runtime error info, protected by host_set lock */ - struct ata_eh_info eh_info; - /* EH context */ - struct ata_eh_context eh_context; - - struct ata_device device[ATA_MAX_DEVICES]; -}; -#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) -#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) - -struct ata_port { - struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ - struct ata_port_operations *ops; - spinlock_t *lock; - /* Flags owned by the EH context. Only EH should touch these once the - port is active */ - unsigned long flags; /* ATA_FLAG_xxx */ - /* Flags that change dynamically, protected by ap->lock */ - unsigned int pflags; /* ATA_PFLAG_xxx */ - unsigned int print_id; /* user visible unique port ID */ - unsigned int port_no; /* 0 based port no. inside the host */ - -#ifdef CONFIG_ATA_SFF - struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ - u8 ctl; /* cache of ATA control register */ - u8 last_ctl; /* Cache last written value */ - struct ata_link* sff_pio_task_link; /* link currently used */ - struct delayed_work sff_pio_task; -#ifdef CONFIG_ATA_BMDMA - struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */ - dma_addr_t bmdma_prd_dma; /* and its DMA mapping */ -#endif /* CONFIG_ATA_BMDMA */ -#endif /* CONFIG_ATA_SFF */ - - unsigned int pio_mask; - unsigned int mwdma_mask; - unsigned int udma_mask; - unsigned int cbl; /* cable type; ATA_CBL_xxx */ - - struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; - unsigned long qc_allocated; - unsigned int qc_active; - int nr_active_links; /* #links with active qcs */ - - struct ata_link link; /* host default link */ - struct ata_link *slave_link; /* see ata_slave_link_init() */ - - int nr_pmp_links; /* nr of available PMP links */ - struct ata_link *pmp_link; /* array of PMP links */ - struct ata_link *excl_link; /* for PMP qc exclusion */ - - struct ata_port_stats stats; - struct ata_host *host; - struct device *dev; - struct device tdev; - - struct mutex scsi_scan_mutex; - struct delayed_work hotplug_task; - struct work_struct scsi_rescan_task; - - unsigned int hsm_task_state; - - u32 msg_enable; - struct list_head eh_done_q; - wait_queue_head_t eh_wait_q; - int eh_tries; - struct completion park_req_pending; - - pm_message_t pm_mesg; - int *pm_result; - enum ata_lpm_policy target_lpm_policy; - - struct timer_list fastdrain_timer; - unsigned long fastdrain_cnt; - - int em_message_type; - void *private_data; - -#ifdef CONFIG_ATA_ACPI - acpi_handle acpi_handle; - struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ -#endif - /* owned by EH */ - u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; -}; - -/* The following initializer overrides a method to NULL whether one of - * its parent has the method defined or not. This is equivalent to - * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant - * expression and thus can't be used as an initializer. - */ -#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) - -struct ata_port_operations { - /* - * Command execution - */ - int (*qc_defer)(struct ata_queued_cmd *qc); - int (*check_atapi_dma)(struct ata_queued_cmd *qc); - void (*qc_prep)(struct ata_queued_cmd *qc); - unsigned int (*qc_issue)(struct ata_queued_cmd *qc); - bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); - - /* - * Configuration and exception handling - */ - int (*cable_detect)(struct ata_port *ap); - unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); - void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); - void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); - int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); - unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); - - void (*dev_config)(struct ata_device *dev); - - void (*freeze)(struct ata_port *ap); - void (*thaw)(struct ata_port *ap); - ata_prereset_fn_t prereset; - ata_reset_fn_t softreset; - ata_reset_fn_t hardreset; - ata_postreset_fn_t postreset; - ata_prereset_fn_t pmp_prereset; - ata_reset_fn_t pmp_softreset; - ata_reset_fn_t pmp_hardreset; - ata_postreset_fn_t pmp_postreset; - void (*error_handler)(struct ata_port *ap); - void (*lost_interrupt)(struct ata_port *ap); - void (*post_internal_cmd)(struct ata_queued_cmd *qc); - - /* - * Optional features - */ - int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); - int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); - void (*pmp_attach)(struct ata_port *ap); - void (*pmp_detach)(struct ata_port *ap); - int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy, - unsigned hints); - - /* - * Start, stop, suspend and resume - */ - int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); - int (*port_resume)(struct ata_port *ap); - int (*port_start)(struct ata_port *ap); - void (*port_stop)(struct ata_port *ap); - void (*host_stop)(struct ata_host *host); - -#ifdef CONFIG_ATA_SFF - /* - * SFF / taskfile oriented ops - */ - void (*sff_dev_select)(struct ata_port *ap, unsigned int device); - void (*sff_set_devctl)(struct ata_port *ap, u8 ctl); - u8 (*sff_check_status)(struct ata_port *ap); - u8 (*sff_check_altstatus)(struct ata_port *ap); - void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); - void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); - void (*sff_exec_command)(struct ata_port *ap, - const struct ata_taskfile *tf); - unsigned int (*sff_data_xfer)(struct ata_device *dev, - unsigned char *buf, unsigned int buflen, int rw); - void (*sff_irq_on)(struct ata_port *); - bool (*sff_irq_check)(struct ata_port *); - void (*sff_irq_clear)(struct ata_port *); - void (*sff_drain_fifo)(struct ata_queued_cmd *qc); - -#ifdef CONFIG_ATA_BMDMA - void (*bmdma_setup)(struct ata_queued_cmd *qc); - void (*bmdma_start)(struct ata_queued_cmd *qc); - void (*bmdma_stop)(struct ata_queued_cmd *qc); - u8 (*bmdma_status)(struct ata_port *ap); -#endif /* CONFIG_ATA_BMDMA */ -#endif /* CONFIG_ATA_SFF */ - - ssize_t (*em_show)(struct ata_port *ap, char *buf); - ssize_t (*em_store)(struct ata_port *ap, const char *message, - size_t size); - ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); - ssize_t (*sw_activity_store)(struct ata_device *dev, - enum sw_activity val); - /* - * Obsolete - */ - void (*phy_reset)(struct ata_port *ap); - void (*eng_timeout)(struct ata_port *ap); - - /* - * ->inherits must be the last field and all the preceding - * fields must be pointers. - */ - const struct ata_port_operations *inherits; -}; - -struct ata_port_info { - unsigned long flags; - unsigned long link_flags; - unsigned long pio_mask; - unsigned long mwdma_mask; - unsigned long udma_mask; - struct ata_port_operations *port_ops; - void *private_data; -}; - -struct ata_timing { - unsigned short mode; /* ATA mode */ - unsigned short setup; /* t1 */ - unsigned short act8b; /* t2 for 8-bit I/O */ - unsigned short rec8b; /* t2i for 8-bit I/O */ - unsigned short cyc8b; /* t0 for 8-bit I/O */ - unsigned short active; /* t2 or tD */ - unsigned short recover; /* t2i or tK */ - unsigned short dmack_hold; /* tj */ - unsigned short cycle; /* t0 */ - unsigned short udma; /* t2CYCTYP/2 */ -}; - -/* - * Core layer - drivers/ata/libata-core.c - */ -extern const unsigned long sata_deb_timing_normal[]; -extern const unsigned long sata_deb_timing_hotplug[]; -extern const unsigned long sata_deb_timing_long[]; - -extern struct ata_port_operations ata_dummy_port_ops; -extern const struct ata_port_info ata_dummy_port_info; - -static inline const unsigned long * -sata_ehc_deb_timing(struct ata_eh_context *ehc) -{ - if (ehc->i.flags & ATA_EHI_HOTPLUGGED) - return sata_deb_timing_hotplug; - else - return sata_deb_timing_normal; -} - -static inline int ata_port_is_dummy(struct ata_port *ap) -{ - return ap->ops == &ata_dummy_port_ops; -} - -extern int sata_set_spd(struct ata_link *link); -extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); -extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, - int (*check_ready)(struct ata_link *link)); -extern int sata_link_debounce(struct ata_link *link, - const unsigned long *params, unsigned long deadline); -extern int sata_link_resume(struct ata_link *link, const unsigned long *params, - unsigned long deadline); -extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, - bool spm_wakeup); -extern int sata_link_hardreset(struct ata_link *link, - const unsigned long *timing, unsigned long deadline, - bool *online, int (*check_ready)(struct ata_link *)); -extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, - unsigned long deadline); -extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); - -extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); -extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, - const struct ata_port_info * const * ppi, int n_ports); -extern int ata_slave_link_init(struct ata_port *ap); -extern int ata_host_start(struct ata_host *host); -extern int ata_host_register(struct ata_host *host, - struct scsi_host_template *sht); -extern int ata_host_activate(struct ata_host *host, int irq, - irq_handler_t irq_handler, unsigned long irq_flags, - struct scsi_host_template *sht); -extern void ata_host_detach(struct ata_host *host); -extern void ata_host_init(struct ata_host *, struct device *, - unsigned long, struct ata_port_operations *); -extern int ata_scsi_detect(struct scsi_host_template *sht); -extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); -extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); -extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, - int cmd, void __user *arg); -extern void ata_sas_port_destroy(struct ata_port *); -extern struct ata_port *ata_sas_port_alloc(struct ata_host *, - struct ata_port_info *, struct Scsi_Host *); -extern void ata_sas_async_probe(struct ata_port *ap); -extern int ata_sas_sync_probe(struct ata_port *ap); -extern int ata_sas_port_init(struct ata_port *); -extern int ata_sas_port_start(struct ata_port *ap); -extern void ata_sas_port_stop(struct ata_port *ap); -extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); -extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); -extern int sata_scr_valid(struct ata_link *link); -extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); -extern int sata_scr_write(struct ata_link *link, int reg, u32 val); -extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); -extern bool ata_link_online(struct ata_link *link); -extern bool ata_link_offline(struct ata_link *link); -#ifdef CONFIG_PM -extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); -extern void ata_host_resume(struct ata_host *host); -#endif -extern int ata_ratelimit(void); -extern void ata_msleep(struct ata_port *ap, unsigned int msecs); -extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, - u32 val, unsigned long interval, unsigned long timeout); -extern int atapi_cmd_type(u8 opcode); -extern void ata_tf_to_fis(const struct ata_taskfile *tf, - u8 pmp, int is_cmd, u8 *fis); -extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); -extern unsigned long ata_pack_xfermask(unsigned long pio_mask, - unsigned long mwdma_mask, unsigned long udma_mask); -extern void ata_unpack_xfermask(unsigned long xfer_mask, - unsigned long *pio_mask, unsigned long *mwdma_mask, - unsigned long *udma_mask); -extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); -extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); -extern int ata_xfer_mode2shift(unsigned long xfer_mode); -extern const char *ata_mode_string(unsigned long xfer_mask); -extern unsigned long ata_id_xfermask(const u16 *id); -extern int ata_std_qc_defer(struct ata_queued_cmd *qc); -extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); -extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, - unsigned int n_elem); -extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); -extern void ata_dev_disable(struct ata_device *adev); -extern void ata_id_string(const u16 *id, unsigned char *s, - unsigned int ofs, unsigned int len); -extern void ata_id_c_string(const u16 *id, unsigned char *s, - unsigned int ofs, unsigned int len); -extern unsigned int ata_do_dev_read_id(struct ata_device *dev, - struct ata_taskfile *tf, u16 *id); -extern void ata_qc_complete(struct ata_queued_cmd *qc); -extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active); -extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); -extern int ata_std_bios_param(struct scsi_device *sdev, - struct block_device *bdev, - sector_t capacity, int geom[]); -extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); -extern int ata_scsi_slave_config(struct scsi_device *sdev); -extern void ata_scsi_slave_destroy(struct scsi_device *sdev); -extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, - int queue_depth, int reason); -extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, - int queue_depth, int reason); -extern struct ata_device *ata_dev_pair(struct ata_device *adev); -extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); -extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); -extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); - -extern int ata_cable_40wire(struct ata_port *ap); -extern int ata_cable_80wire(struct ata_port *ap); -extern int ata_cable_sata(struct ata_port *ap); -extern int ata_cable_ignore(struct ata_port *ap); -extern int ata_cable_unknown(struct ata_port *ap); - -/* Timing helpers */ -extern unsigned int ata_pio_need_iordy(const struct ata_device *); -extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); -extern int ata_timing_compute(struct ata_device *, unsigned short, - struct ata_timing *, int, int); -extern void ata_timing_merge(const struct ata_timing *, - const struct ata_timing *, struct ata_timing *, - unsigned int); -extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); - -/* PCI */ -#ifdef CONFIG_PCI -struct pci_dev; - -struct pci_bits { - unsigned int reg; /* PCI config register to read */ - unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ - unsigned long mask; - unsigned long val; -}; - -extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); -extern void ata_pci_remove_one(struct pci_dev *pdev); - -#ifdef CONFIG_PM -extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); -extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); -extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); -extern int ata_pci_device_resume(struct pci_dev *pdev); -#endif /* CONFIG_PM */ -#endif /* CONFIG_PCI */ - -/* - * ACPI - drivers/ata/libata-acpi.c - */ -#ifdef CONFIG_ATA_ACPI -static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) -{ - if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) - return &ap->__acpi_init_gtm; - return NULL; -} -int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); -int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); -unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, - const struct ata_acpi_gtm *gtm); -int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); -#else -static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) -{ - return NULL; -} - -static inline int ata_acpi_stm(const struct ata_port *ap, - struct ata_acpi_gtm *stm) -{ - return -ENOSYS; -} - -static inline int ata_acpi_gtm(const struct ata_port *ap, - struct ata_acpi_gtm *stm) -{ - return -ENOSYS; -} - -static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, - const struct ata_acpi_gtm *gtm) -{ - return 0; -} - -static inline int ata_acpi_cbl_80wire(struct ata_port *ap, - const struct ata_acpi_gtm *gtm) -{ - return 0; -} -#endif - -/* - * EH - drivers/ata/libata-eh.c - */ -extern void ata_port_schedule_eh(struct ata_port *ap); -extern void ata_port_wait_eh(struct ata_port *ap); -extern int ata_link_abort(struct ata_link *link); -extern int ata_port_abort(struct ata_port *ap); -extern int ata_port_freeze(struct ata_port *ap); -extern int sata_async_notification(struct ata_port *ap); - -extern void ata_eh_freeze_port(struct ata_port *ap); -extern void ata_eh_thaw_port(struct ata_port *ap); - -extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); -extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); -extern void ata_eh_analyze_ncq_error(struct ata_link *link); - -extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, - ata_reset_fn_t softreset, ata_reset_fn_t hardreset, - ata_postreset_fn_t postreset); -extern void ata_std_error_handler(struct ata_port *ap); -extern int ata_link_nr_enabled(struct ata_link *link); - -/* - * Base operations to inherit from and initializers for sht - * - * Operations - * - * base : Common to all libata drivers. - * sata : SATA controllers w/ native interface. - * pmp : SATA controllers w/ PMP support. - * sff : SFF ATA controllers w/o BMDMA support. - * bmdma : SFF ATA controllers w/ BMDMA support. - * - * sht initializers - * - * BASE : Common to all libata drivers. The user must set - * sg_tablesize and dma_boundary. - * PIO : SFF ATA controllers w/ only PIO support. - * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and - * dma_boundary are set to BMDMA limits. - * NCQ : SATA controllers supporting NCQ. The user must set - * sg_tablesize, dma_boundary and can_queue. - */ -extern const struct ata_port_operations ata_base_port_ops; -extern const struct ata_port_operations sata_port_ops; -extern struct device_attribute *ata_common_sdev_attrs[]; - -#define ATA_BASE_SHT(drv_name) \ - .module = THIS_MODULE, \ - .name = drv_name, \ - .ioctl = ata_scsi_ioctl, \ - .queuecommand = ata_scsi_queuecmd, \ - .can_queue = ATA_DEF_QUEUE, \ - .this_id = ATA_SHT_THIS_ID, \ - .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \ - .emulated = ATA_SHT_EMULATED, \ - .use_clustering = ATA_SHT_USE_CLUSTERING, \ - .proc_name = drv_name, \ - .slave_configure = ata_scsi_slave_config, \ - .slave_destroy = ata_scsi_slave_destroy, \ - .bios_param = ata_std_bios_param, \ - .unlock_native_capacity = ata_scsi_unlock_native_capacity, \ - .sdev_attrs = ata_common_sdev_attrs - -#define ATA_NCQ_SHT(drv_name) \ - ATA_BASE_SHT(drv_name), \ - .change_queue_depth = ata_scsi_change_queue_depth - -/* - * PMP helpers - */ -#ifdef CONFIG_SATA_PMP -static inline bool sata_pmp_supported(struct ata_port *ap) -{ - return ap->flags & ATA_FLAG_PMP; -} - -static inline bool sata_pmp_attached(struct ata_port *ap) -{ - return ap->nr_pmp_links != 0; -} - -static inline int ata_is_host_link(const struct ata_link *link) -{ - return link == &link->ap->link || link == link->ap->slave_link; -} -#else /* CONFIG_SATA_PMP */ -static inline bool sata_pmp_supported(struct ata_port *ap) -{ - return false; -} - -static inline bool sata_pmp_attached(struct ata_port *ap) -{ - return false; -} - -static inline int ata_is_host_link(const struct ata_link *link) -{ - return 1; -} -#endif /* CONFIG_SATA_PMP */ - -static inline int sata_srst_pmp(struct ata_link *link) -{ - if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) - return SATA_PMP_CTRL_PORT; - return link->pmp; -} - -/* - * printk helpers - */ -__printf(3, 4) -int ata_port_printk(const struct ata_port *ap, const char *level, - const char *fmt, ...); -__printf(3, 4) -int ata_link_printk(const struct ata_link *link, const char *level, - const char *fmt, ...); -__printf(3, 4) -int ata_dev_printk(const struct ata_device *dev, const char *level, - const char *fmt, ...); - -#define ata_port_err(ap, fmt, ...) \ - ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__) -#define ata_port_warn(ap, fmt, ...) \ - ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__) -#define ata_port_notice(ap, fmt, ...) \ - ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__) -#define ata_port_info(ap, fmt, ...) \ - ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__) -#define ata_port_dbg(ap, fmt, ...) \ - ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__) - -#define ata_link_err(link, fmt, ...) \ - ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__) -#define ata_link_warn(link, fmt, ...) \ - ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__) -#define ata_link_notice(link, fmt, ...) \ - ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__) -#define ata_link_info(link, fmt, ...) \ - ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__) -#define ata_link_dbg(link, fmt, ...) \ - ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__) - -#define ata_dev_err(dev, fmt, ...) \ - ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__) -#define ata_dev_warn(dev, fmt, ...) \ - ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__) -#define ata_dev_notice(dev, fmt, ...) \ - ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__) -#define ata_dev_info(dev, fmt, ...) \ - ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__) -#define ata_dev_dbg(dev, fmt, ...) \ - ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__) - -void ata_print_version(const struct device *dev, const char *version); - -/* - * ata_eh_info helpers - */ -extern __printf(2, 3) -void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); -extern __printf(2, 3) -void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); -extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); - -static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) -{ - ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; - ehi->flags |= ATA_EHI_HOTPLUGGED; - ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; - ehi->err_mask |= AC_ERR_ATA_BUS; -} - -/* - * port description helpers - */ -extern __printf(2, 3) -void ata_port_desc(struct ata_port *ap, const char *fmt, ...); -#ifdef CONFIG_PCI -extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, - const char *name); -#endif - -static inline unsigned int ata_tag_valid(unsigned int tag) -{ - return (tag < ATA_MAX_QUEUE) ? 1 : 0; -} - -static inline unsigned int ata_tag_internal(unsigned int tag) -{ - return tag == ATA_TAG_INTERNAL; -} - -/* - * device helpers - */ -static inline unsigned int ata_class_enabled(unsigned int class) -{ - return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || - class == ATA_DEV_PMP || class == ATA_DEV_SEMB; -} - -static inline unsigned int ata_class_disabled(unsigned int class) -{ - return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || - class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; -} - -static inline unsigned int ata_class_absent(unsigned int class) -{ - return !ata_class_enabled(class) && !ata_class_disabled(class); -} - -static inline unsigned int ata_dev_enabled(const struct ata_device *dev) -{ - return ata_class_enabled(dev->class); -} - -static inline unsigned int ata_dev_disabled(const struct ata_device *dev) -{ - return ata_class_disabled(dev->class); -} - -static inline unsigned int ata_dev_absent(const struct ata_device *dev) -{ - return ata_class_absent(dev->class); -} - -/* - * link helpers - */ -static inline int ata_link_max_devices(const struct ata_link *link) -{ - if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) - return 2; - return 1; -} - -static inline int ata_link_active(struct ata_link *link) -{ - return ata_tag_valid(link->active_tag) || link->sactive; -} - -/* - * Iterators - * - * ATA_LITER_* constants are used to select link iteration mode and - * ATA_DITER_* device iteration mode. - * - * For a custom iteration directly using ata_{link|dev}_next(), if - * @link or @dev, respectively, is NULL, the first element is - * returned. @dev and @link can be any valid device or link and the - * next element according to the iteration mode will be returned. - * After the last element, NULL is returned. - */ -enum ata_link_iter_mode { - ATA_LITER_EDGE, /* if present, PMP links only; otherwise, - * host link. no slave link */ - ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ - ATA_LITER_PMP_FIRST, /* PMP links followed by host link, - * slave link still comes after host link */ -}; - -enum ata_dev_iter_mode { - ATA_DITER_ENABLED, - ATA_DITER_ENABLED_REVERSE, - ATA_DITER_ALL, - ATA_DITER_ALL_REVERSE, -}; - -extern struct ata_link *ata_link_next(struct ata_link *link, - struct ata_port *ap, - enum ata_link_iter_mode mode); - -extern struct ata_device *ata_dev_next(struct ata_device *dev, - struct ata_link *link, - enum ata_dev_iter_mode mode); - -/* - * Shortcut notation for iterations - * - * ata_for_each_link() iterates over each link of @ap according to - * @mode. @link points to the current link in the loop. @link is - * NULL after loop termination. ata_for_each_dev() works the same way - * except that it iterates over each device of @link. - * - * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be - * specified when using the following shorthand notations. Only the - * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be - * specified. This not only increases brevity but also makes it - * impossible to use ATA_LITER_* for device iteration or vice-versa. - */ -#define ata_for_each_link(link, ap, mode) \ - for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ - (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) - -#define ata_for_each_dev(dev, link, mode) \ - for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ - (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) - -/** - * ata_ncq_enabled - Test whether NCQ is enabled - * @dev: ATA device to test for - * - * LOCKING: - * spin_lock_irqsave(host lock) - * - * RETURNS: - * 1 if NCQ is enabled for @dev, 0 otherwise. - */ -static inline int ata_ncq_enabled(struct ata_device *dev) -{ - return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | - ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; -} - -static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) -{ - qc->tf.ctl |= ATA_NIEN; -} - -static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, - unsigned int tag) -{ - if (likely(ata_tag_valid(tag))) - return &ap->qcmd[tag]; - return NULL; -} - -static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, - unsigned int tag) -{ - struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); - - if (unlikely(!qc) || !ap->ops->error_handler) - return qc; - - if ((qc->flags & (ATA_QCFLAG_ACTIVE | - ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) - return qc; - - return NULL; -} - -static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) -{ - return qc->nbytes - min(qc->extrabytes, qc->nbytes); -} - -static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) -{ - memset(tf, 0, sizeof(*tf)); - -#ifdef CONFIG_ATA_SFF - tf->ctl = dev->link->ap->ctl; -#else - tf->ctl = ATA_DEVCTL_OBS; -#endif - if (dev->devno == 0) - tf->device = ATA_DEVICE_OBS; - else - tf->device = ATA_DEVICE_OBS | ATA_DEV1; -} - -static inline void ata_qc_reinit(struct ata_queued_cmd *qc) -{ - qc->dma_dir = DMA_NONE; - qc->sg = NULL; - qc->flags = 0; - qc->cursg = NULL; - qc->cursg_ofs = 0; - qc->nbytes = qc->extrabytes = qc->curbytes = 0; - qc->n_elem = 0; - qc->err_mask = 0; - qc->sect_size = ATA_SECT_SIZE; - - ata_tf_init(qc->dev, &qc->tf); - - /* init result_tf such that it indicates normal completion */ - qc->result_tf.command = ATA_DRDY; - qc->result_tf.feature = 0; -} - -static inline int ata_try_flush_cache(const struct ata_device *dev) -{ - return ata_id_wcache_enabled(dev->id) || - ata_id_has_flush(dev->id) || - ata_id_has_flush_ext(dev->id); -} - -static inline unsigned int ac_err_mask(u8 status) -{ - if (status & (ATA_BUSY | ATA_DRQ)) - return AC_ERR_HSM; - if (status & (ATA_ERR | ATA_DF)) - return AC_ERR_DEV; - return 0; -} - -static inline unsigned int __ac_err_mask(u8 status) -{ - unsigned int mask = ac_err_mask(status); - if (mask == 0) - return AC_ERR_OTHER; - return mask; -} - -static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) -{ - return *(struct ata_port **)&host->hostdata[0]; -} - -static inline int ata_check_ready(u8 status) -{ - if (!(status & ATA_BUSY)) - return 1; - - /* 0xff indicates either no device or device not ready */ - if (status == 0xff) - return -ENODEV; - - return 0; -} - -static inline unsigned long ata_deadline(unsigned long from_jiffies, - unsigned long timeout_msecs) -{ - return from_jiffies + msecs_to_jiffies(timeout_msecs); -} - -/* Don't open code these in drivers as there are traps. Firstly the range may - change in future hardware and specs, secondly 0xFF means 'no DMA' but is - > UDMA_0. Dyma ddreigiau */ - -static inline int ata_using_mwdma(struct ata_device *adev) -{ - if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) - return 1; - return 0; -} - -static inline int ata_using_udma(struct ata_device *adev) -{ - if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) - return 1; - return 0; -} - -static inline int ata_dma_enabled(struct ata_device *adev) -{ - return (adev->dma_mode == 0xFF ? 0 : 1); -} - -/************************************************************************** - * PMP - drivers/ata/libata-pmp.c - */ -#ifdef CONFIG_SATA_PMP - -extern const struct ata_port_operations sata_pmp_port_ops; - -extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); -extern void sata_pmp_error_handler(struct ata_port *ap); - -#else /* CONFIG_SATA_PMP */ - -#define sata_pmp_port_ops sata_port_ops -#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer -#define sata_pmp_error_handler ata_std_error_handler - -#endif /* CONFIG_SATA_PMP */ - - -/************************************************************************** - * SFF - drivers/ata/libata-sff.c - */ -#ifdef CONFIG_ATA_SFF - -extern const struct ata_port_operations ata_sff_port_ops; -extern const struct ata_port_operations ata_bmdma32_port_ops; - -/* PIO only, sg_tablesize and dma_boundary limits can be removed */ -#define ATA_PIO_SHT(drv_name) \ - ATA_BASE_SHT(drv_name), \ - .sg_tablesize = LIBATA_MAX_PRD, \ - .dma_boundary = ATA_DMA_BOUNDARY - -extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); -extern u8 ata_sff_check_status(struct ata_port *ap); -extern void ata_sff_pause(struct ata_port *ap); -extern void ata_sff_dma_pause(struct ata_port *ap); -extern int ata_sff_busy_sleep(struct ata_port *ap, - unsigned long timeout_pat, unsigned long timeout); -extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); -extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); -extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); -extern void ata_sff_exec_command(struct ata_port *ap, - const struct ata_taskfile *tf); -extern unsigned int ata_sff_data_xfer(struct ata_device *dev, - unsigned char *buf, unsigned int buflen, int rw); -extern unsigned int ata_sff_data_xfer32(struct ata_device *dev, - unsigned char *buf, unsigned int buflen, int rw); -extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev, - unsigned char *buf, unsigned int buflen, int rw); -extern void ata_sff_irq_on(struct ata_port *ap); -extern void ata_sff_irq_clear(struct ata_port *ap); -extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, - u8 status, int in_wq); -extern void ata_sff_queue_work(struct work_struct *work); -extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, - unsigned long delay); -extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); -extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); -extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); -extern unsigned int ata_sff_port_intr(struct ata_port *ap, - struct ata_queued_cmd *qc); -extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); -extern void ata_sff_lost_interrupt(struct ata_port *ap); -extern void ata_sff_freeze(struct ata_port *ap); -extern void ata_sff_thaw(struct ata_port *ap); -extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); -extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, - u8 *r_err); -extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, - unsigned long deadline); -extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, - unsigned long deadline); -extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, - unsigned long deadline); -extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); -extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); -extern void ata_sff_error_handler(struct ata_port *ap); -extern void ata_sff_std_ports(struct ata_ioports *ioaddr); -#ifdef CONFIG_PCI -extern int ata_pci_sff_init_host(struct ata_host *host); -extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, - const struct ata_port_info * const * ppi, - struct ata_host **r_host); -extern int ata_pci_sff_activate_host(struct ata_host *host, - irq_handler_t irq_handler, - struct scsi_host_template *sht); -extern int ata_pci_sff_init_one(struct pci_dev *pdev, - const struct ata_port_info * const * ppi, - struct scsi_host_template *sht, void *host_priv, int hflags); -#endif /* CONFIG_PCI */ - -#ifdef CONFIG_ATA_BMDMA - -extern const struct ata_port_operations ata_bmdma_port_ops; - -#define ATA_BMDMA_SHT(drv_name) \ - ATA_BASE_SHT(drv_name), \ - .sg_tablesize = LIBATA_MAX_PRD, \ - .dma_boundary = ATA_DMA_BOUNDARY - -extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc); -extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); -extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); -extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, - struct ata_queued_cmd *qc); -extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); -extern void ata_bmdma_error_handler(struct ata_port *ap); -extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); -extern void ata_bmdma_irq_clear(struct ata_port *ap); -extern void ata_bmdma_setup(struct ata_queued_cmd *qc); -extern void ata_bmdma_start(struct ata_queued_cmd *qc); -extern void ata_bmdma_stop(struct ata_queued_cmd *qc); -extern u8 ata_bmdma_status(struct ata_port *ap); -extern int ata_bmdma_port_start(struct ata_port *ap); -extern int ata_bmdma_port_start32(struct ata_port *ap); - -#ifdef CONFIG_PCI -extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); -extern void ata_pci_bmdma_init(struct ata_host *host); -extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, - const struct ata_port_info * const * ppi, - struct ata_host **r_host); -extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, - const struct ata_port_info * const * ppi, - struct scsi_host_template *sht, - void *host_priv, int hflags); -#endif /* CONFIG_PCI */ -#endif /* CONFIG_ATA_BMDMA */ - -/** - * ata_sff_busy_wait - Wait for a port status register - * @ap: Port to wait for. - * @bits: bits that must be clear - * @max: number of 10uS waits to perform - * - * Waits up to max*10 microseconds for the selected bits in the port's - * status register to be cleared. - * Returns final value of status register. - * - * LOCKING: - * Inherited from caller. - */ -static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, - unsigned int max) -{ - u8 status; - - do { - udelay(10); - status = ap->ops->sff_check_status(ap); - max--; - } while (status != 0xff && (status & bits) && (max > 0)); - - return status; -} - -/** - * ata_wait_idle - Wait for a port to be idle. - * @ap: Port to wait for. - * - * Waits up to 10ms for port's BUSY and DRQ signals to clear. - * Returns final value of status register. - * - * LOCKING: - * Inherited from caller. - */ -static inline u8 ata_wait_idle(struct ata_port *ap) -{ - u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); - -#ifdef ATA_DEBUG - if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) - ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", - status); -#endif - - return status; -} -#endif /* CONFIG_ATA_SFF */ - -#endif /* __LINUX_LIBATA_H__ */ |