diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/mmc/host/vub300.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/mmc/host/vub300.c | 2503 |
1 files changed, 0 insertions, 2503 deletions
diff --git a/ANDROID_3.4.5/drivers/mmc/host/vub300.c b/ANDROID_3.4.5/drivers/mmc/host/vub300.c deleted file mode 100644 index 3135a1a5..00000000 --- a/ANDROID_3.4.5/drivers/mmc/host/vub300.c +++ /dev/null @@ -1,2503 +0,0 @@ -/* - * Remote VUB300 SDIO/SDmem Host Controller Driver - * - * Copyright (C) 2010 Elan Digital Systems Limited - * - * based on USB Skeleton driver - 2.2 - * - * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com) - * - * 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, version 2 - * - * VUB300: is a USB 2.0 client device with a single SDIO/SDmem/MMC slot - * Any SDIO/SDmem/MMC device plugged into the VUB300 will appear, - * by virtue of this driver, to have been plugged into a local - * SDIO host controller, similar to, say, a PCI Ricoh controller - * This is because this kernel device driver is both a USB 2.0 - * client device driver AND an MMC host controller driver. Thus - * if there is an existing driver for the inserted SDIO/SDmem/MMC - * device then that driver will be used by the kernel to manage - * the device in exactly the same fashion as if it had been - * directly plugged into, say, a local pci bus Ricoh controller - * - * RANT: this driver was written using a display 128x48 - converting it - * to a line width of 80 makes it very difficult to support. In - * particular functions have been broken down into sub functions - * and the original meaningful names have been shortened into - * cryptic ones. - * The problem is that executing a fragment of code subject to - * two conditions means an indentation of 24, thus leaving only - * 56 characters for a C statement. And that is quite ridiculous! - * - * Data types: data passed to/from the VUB300 is fixed to a number of - * bits and driver data fields reflect that limit by using - * u8, u16, u32 - */ -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/kref.h> -#include <linux/uaccess.h> -#include <linux/usb.h> -#include <linux/mutex.h> -#include <linux/mmc/host.h> -#include <linux/mmc/card.h> -#include <linux/mmc/sdio_func.h> -#include <linux/mmc/sdio_ids.h> -#include <linux/workqueue.h> -#include <linux/ctype.h> -#include <linux/firmware.h> -#include <linux/scatterlist.h> - -struct host_controller_info { - u8 info_size; - u16 firmware_version; - u8 number_of_ports; -} __packed; - -#define FIRMWARE_BLOCK_BOUNDARY 1024 -struct sd_command_header { - u8 header_size; - u8 header_type; - u8 port_number; - u8 command_type; /* Bit7 - Rd/Wr */ - u8 command_index; - u8 transfer_size[4]; /* ReadSize + ReadSize */ - u8 response_type; - u8 arguments[4]; - u8 block_count[2]; - u8 block_size[2]; - u8 block_boundary[2]; - u8 reserved[44]; /* to pad out to 64 bytes */ -} __packed; - -struct sd_irqpoll_header { - u8 header_size; - u8 header_type; - u8 port_number; - u8 command_type; /* Bit7 - Rd/Wr */ - u8 padding[16]; /* don't ask why !! */ - u8 poll_timeout_msb; - u8 poll_timeout_lsb; - u8 reserved[42]; /* to pad out to 64 bytes */ -} __packed; - -struct sd_common_header { - u8 header_size; - u8 header_type; - u8 port_number; -} __packed; - -struct sd_response_header { - u8 header_size; - u8 header_type; - u8 port_number; - u8 command_type; - u8 command_index; - u8 command_response[0]; -} __packed; - -struct sd_status_header { - u8 header_size; - u8 header_type; - u8 port_number; - u16 port_flags; - u32 sdio_clock; - u16 host_header_size; - u16 func_header_size; - u16 ctrl_header_size; -} __packed; - -struct sd_error_header { - u8 header_size; - u8 header_type; - u8 port_number; - u8 error_code; -} __packed; - -struct sd_interrupt_header { - u8 header_size; - u8 header_type; - u8 port_number; -} __packed; - -struct offload_registers_access { - u8 command_byte[4]; - u8 Respond_Byte[4]; -} __packed; - -#define INTERRUPT_REGISTER_ACCESSES 15 -struct sd_offloaded_interrupt { - u8 header_size; - u8 header_type; - u8 port_number; - struct offload_registers_access reg[INTERRUPT_REGISTER_ACCESSES]; -} __packed; - -struct sd_register_header { - u8 header_size; - u8 header_type; - u8 port_number; - u8 command_type; - u8 command_index; - u8 command_response[6]; -} __packed; - -#define PIGGYBACK_REGISTER_ACCESSES 14 -struct sd_offloaded_piggyback { - struct sd_register_header sdio; - struct offload_registers_access reg[PIGGYBACK_REGISTER_ACCESSES]; -} __packed; - -union sd_response { - struct sd_common_header common; - struct sd_status_header status; - struct sd_error_header error; - struct sd_interrupt_header interrupt; - struct sd_response_header response; - struct sd_offloaded_interrupt irq; - struct sd_offloaded_piggyback pig; -} __packed; - -union sd_command { - struct sd_command_header head; - struct sd_irqpoll_header poll; -} __packed; - -enum SD_RESPONSE_TYPE { - SDRT_UNSPECIFIED = 0, - SDRT_NONE, - SDRT_1, - SDRT_1B, - SDRT_2, - SDRT_3, - SDRT_4, - SDRT_5, - SDRT_5B, - SDRT_6, - SDRT_7, -}; - -#define RESPONSE_INTERRUPT 0x01 -#define RESPONSE_ERROR 0x02 -#define RESPONSE_STATUS 0x03 -#define RESPONSE_IRQ_DISABLED 0x05 -#define RESPONSE_IRQ_ENABLED 0x06 -#define RESPONSE_PIGGYBACKED 0x07 -#define RESPONSE_NO_INTERRUPT 0x08 -#define RESPONSE_PIG_DISABLED 0x09 -#define RESPONSE_PIG_ENABLED 0x0A -#define SD_ERROR_1BIT_TIMEOUT 0x01 -#define SD_ERROR_4BIT_TIMEOUT 0x02 -#define SD_ERROR_1BIT_CRC_WRONG 0x03 -#define SD_ERROR_4BIT_CRC_WRONG 0x04 -#define SD_ERROR_1BIT_CRC_ERROR 0x05 -#define SD_ERROR_4BIT_CRC_ERROR 0x06 -#define SD_ERROR_NO_CMD_ENDBIT 0x07 -#define SD_ERROR_NO_1BIT_DATEND 0x08 -#define SD_ERROR_NO_4BIT_DATEND 0x09 -#define SD_ERROR_1BIT_UNEXPECTED_TIMEOUT 0x0A -#define SD_ERROR_4BIT_UNEXPECTED_TIMEOUT 0x0B -#define SD_ERROR_ILLEGAL_COMMAND 0x0C -#define SD_ERROR_NO_DEVICE 0x0D -#define SD_ERROR_TRANSFER_LENGTH 0x0E -#define SD_ERROR_1BIT_DATA_TIMEOUT 0x0F -#define SD_ERROR_4BIT_DATA_TIMEOUT 0x10 -#define SD_ERROR_ILLEGAL_STATE 0x11 -#define SD_ERROR_UNKNOWN_ERROR 0x12 -#define SD_ERROR_RESERVED_ERROR 0x13 -#define SD_ERROR_INVALID_FUNCTION 0x14 -#define SD_ERROR_OUT_OF_RANGE 0x15 -#define SD_ERROR_STAT_CMD 0x16 -#define SD_ERROR_STAT_DATA 0x17 -#define SD_ERROR_STAT_CMD_TIMEOUT 0x18 -#define SD_ERROR_SDCRDY_STUCK 0x19 -#define SD_ERROR_UNHANDLED 0x1A -#define SD_ERROR_OVERRUN 0x1B -#define SD_ERROR_PIO_TIMEOUT 0x1C - -#define FUN(c) (0x000007 & (c->arg>>28)) -#define REG(c) (0x01FFFF & (c->arg>>9)) - -static bool limit_speed_to_24_MHz; -module_param(limit_speed_to_24_MHz, bool, 0644); -MODULE_PARM_DESC(limit_speed_to_24_MHz, "Limit Max SDIO Clock Speed to 24 MHz"); - -static bool pad_input_to_usb_pkt; -module_param(pad_input_to_usb_pkt, bool, 0644); -MODULE_PARM_DESC(pad_input_to_usb_pkt, - "Pad USB data input transfers to whole USB Packet"); - -static bool disable_offload_processing; -module_param(disable_offload_processing, bool, 0644); -MODULE_PARM_DESC(disable_offload_processing, "Disable Offload Processing"); - -static bool force_1_bit_data_xfers; -module_param(force_1_bit_data_xfers, bool, 0644); -MODULE_PARM_DESC(force_1_bit_data_xfers, - "Force SDIO Data Transfers to 1-bit Mode"); - -static bool force_polling_for_irqs; -module_param(force_polling_for_irqs, bool, 0644); -MODULE_PARM_DESC(force_polling_for_irqs, "Force Polling for SDIO interrupts"); - -static int firmware_irqpoll_timeout = 1024; -module_param(firmware_irqpoll_timeout, int, 0644); -MODULE_PARM_DESC(firmware_irqpoll_timeout, "VUB300 firmware irqpoll timeout"); - -static int force_max_req_size = 128; -module_param(force_max_req_size, int, 0644); -MODULE_PARM_DESC(force_max_req_size, "set max request size in kBytes"); - -#ifdef SMSC_DEVELOPMENT_BOARD -static int firmware_rom_wait_states = 0x04; -#else -static int firmware_rom_wait_states = 0x1C; -#endif - -module_param(firmware_rom_wait_states, int, 0644); -MODULE_PARM_DESC(firmware_rom_wait_states, - "ROM wait states byte=RRRIIEEE (Reserved Internal External)"); - -#define ELAN_VENDOR_ID 0x2201 -#define VUB300_VENDOR_ID 0x0424 -#define VUB300_PRODUCT_ID 0x012C -static struct usb_device_id vub300_table[] = { - {USB_DEVICE(ELAN_VENDOR_ID, VUB300_PRODUCT_ID)}, - {USB_DEVICE(VUB300_VENDOR_ID, VUB300_PRODUCT_ID)}, - {} /* Terminating entry */ -}; -MODULE_DEVICE_TABLE(usb, vub300_table); - -static struct workqueue_struct *cmndworkqueue; -static struct workqueue_struct *pollworkqueue; -static struct workqueue_struct *deadworkqueue; - -static inline int interface_to_InterfaceNumber(struct usb_interface *interface) -{ - if (!interface) - return -1; - if (!interface->cur_altsetting) - return -1; - return interface->cur_altsetting->desc.bInterfaceNumber; -} - -struct sdio_register { - unsigned func_num:3; - unsigned sdio_reg:17; - unsigned activate:1; - unsigned prepared:1; - unsigned regvalue:8; - unsigned response:8; - unsigned sparebit:26; -}; - -struct vub300_mmc_host { - struct usb_device *udev; - struct usb_interface *interface; - struct kref kref; - struct mutex cmd_mutex; - struct mutex irq_mutex; - char vub_name[3 + (9 * 8) + 4 + 1]; /* max of 7 sdio fn's */ - u8 cmnd_out_ep; /* EndPoint for commands */ - u8 cmnd_res_ep; /* EndPoint for responses */ - u8 data_out_ep; /* EndPoint for out data */ - u8 data_inp_ep; /* EndPoint for inp data */ - bool card_powered; - bool card_present; - bool read_only; - bool large_usb_packets; - bool app_spec; /* ApplicationSpecific */ - bool irq_enabled; /* by the MMC CORE */ - bool irq_disabled; /* in the firmware */ - unsigned bus_width:4; - u8 total_offload_count; - u8 dynamic_register_count; - u8 resp_len; - u32 datasize; - int errors; - int usb_transport_fail; - int usb_timed_out; - int irqs_queued; - struct sdio_register sdio_register[16]; - struct offload_interrupt_function_register { -#define MAXREGBITS 4 -#define MAXREGS (1<<MAXREGBITS) -#define MAXREGMASK (MAXREGS-1) - u8 offload_count; - u32 offload_point; - struct offload_registers_access reg[MAXREGS]; - } fn[8]; - u16 fbs[8]; /* Function Block Size */ - struct mmc_command *cmd; - struct mmc_request *req; - struct mmc_data *data; - struct mmc_host *mmc; - struct urb *urb; - struct urb *command_out_urb; - struct urb *command_res_urb; - struct completion command_complete; - struct completion irqpoll_complete; - union sd_command cmnd; - union sd_response resp; - struct timer_list sg_transfer_timer; - struct usb_sg_request sg_request; - struct timer_list inactivity_timer; - struct work_struct deadwork; - struct work_struct cmndwork; - struct delayed_work pollwork; - struct host_controller_info hc_info; - struct sd_status_header system_port_status; - u8 padded_buffer[64]; -}; - -#define kref_to_vub300_mmc_host(d) container_of(d, struct vub300_mmc_host, kref) -#define SET_TRANSFER_PSEUDOCODE 21 -#define SET_INTERRUPT_PSEUDOCODE 20 -#define SET_FAILURE_MODE 18 -#define SET_ROM_WAIT_STATES 16 -#define SET_IRQ_ENABLE 13 -#define SET_CLOCK_SPEED 11 -#define SET_FUNCTION_BLOCK_SIZE 9 -#define SET_SD_DATA_MODE 6 -#define SET_SD_POWER 4 -#define ENTER_DFU_MODE 3 -#define GET_HC_INF0 1 -#define GET_SYSTEM_PORT_STATUS 0 - -static void vub300_delete(struct kref *kref) -{ /* kref callback - softirq */ - struct vub300_mmc_host *vub300 = kref_to_vub300_mmc_host(kref); - struct mmc_host *mmc = vub300->mmc; - usb_free_urb(vub300->command_out_urb); - vub300->command_out_urb = NULL; - usb_free_urb(vub300->command_res_urb); - vub300->command_res_urb = NULL; - usb_put_dev(vub300->udev); - mmc_free_host(mmc); - /* - * and hence also frees vub300 - * which is contained at the end of struct mmc - */ -} - -static void vub300_queue_cmnd_work(struct vub300_mmc_host *vub300) -{ - kref_get(&vub300->kref); - if (queue_work(cmndworkqueue, &vub300->cmndwork)) { - /* - * then the cmndworkqueue was not previously - * running and the above get ref is obvious - * required and will be put when the thread - * terminates by a specific call - */ - } else { - /* - * the cmndworkqueue was already running from - * a previous invocation and thus to keep the - * kref counts correct we must undo the get - */ - kref_put(&vub300->kref, vub300_delete); - } -} - -static void vub300_queue_poll_work(struct vub300_mmc_host *vub300, int delay) -{ - kref_get(&vub300->kref); - if (queue_delayed_work(pollworkqueue, &vub300->pollwork, delay)) { - /* - * then the pollworkqueue was not previously - * running and the above get ref is obvious - * required and will be put when the thread - * terminates by a specific call - */ - } else { - /* - * the pollworkqueue was already running from - * a previous invocation and thus to keep the - * kref counts correct we must undo the get - */ - kref_put(&vub300->kref, vub300_delete); - } -} - -static void vub300_queue_dead_work(struct vub300_mmc_host *vub300) -{ - kref_get(&vub300->kref); - if (queue_work(deadworkqueue, &vub300->deadwork)) { - /* - * then the deadworkqueue was not previously - * running and the above get ref is obvious - * required and will be put when the thread - * terminates by a specific call - */ - } else { - /* - * the deadworkqueue was already running from - * a previous invocation and thus to keep the - * kref counts correct we must undo the get - */ - kref_put(&vub300->kref, vub300_delete); - } -} - -static void irqpoll_res_completed(struct urb *urb) -{ /* urb completion handler - hardirq */ - struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context; - if (urb->status) - vub300->usb_transport_fail = urb->status; - complete(&vub300->irqpoll_complete); -} - -static void irqpoll_out_completed(struct urb *urb) -{ /* urb completion handler - hardirq */ - struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context; - if (urb->status) { - vub300->usb_transport_fail = urb->status; - complete(&vub300->irqpoll_complete); - return; - } else { - int ret; - unsigned int pipe = - usb_rcvbulkpipe(vub300->udev, vub300->cmnd_res_ep); - usb_fill_bulk_urb(vub300->command_res_urb, vub300->udev, pipe, - &vub300->resp, sizeof(vub300->resp), - irqpoll_res_completed, vub300); - vub300->command_res_urb->actual_length = 0; - ret = usb_submit_urb(vub300->command_res_urb, GFP_ATOMIC); - if (ret) { - vub300->usb_transport_fail = ret; - complete(&vub300->irqpoll_complete); - } - return; - } -} - -static void send_irqpoll(struct vub300_mmc_host *vub300) -{ - /* cmd_mutex is held by vub300_pollwork_thread */ - int retval; - int timeout = 0xFFFF & (0x0001FFFF - firmware_irqpoll_timeout); - vub300->cmnd.poll.header_size = 22; - vub300->cmnd.poll.header_type = 1; - vub300->cmnd.poll.port_number = 0; - vub300->cmnd.poll.command_type = 2; - vub300->cmnd.poll.poll_timeout_lsb = 0xFF & (unsigned)timeout; - vub300->cmnd.poll.poll_timeout_msb = 0xFF & (unsigned)(timeout >> 8); - usb_fill_bulk_urb(vub300->command_out_urb, vub300->udev, - usb_sndbulkpipe(vub300->udev, vub300->cmnd_out_ep) - , &vub300->cmnd, sizeof(vub300->cmnd) - , irqpoll_out_completed, vub300); - retval = usb_submit_urb(vub300->command_out_urb, GFP_KERNEL); - if (0 > retval) { - vub300->usb_transport_fail = retval; - vub300_queue_poll_work(vub300, 1); - complete(&vub300->irqpoll_complete); - return; - } else { - return; - } -} - -static void new_system_port_status(struct vub300_mmc_host *vub300) -{ - int old_card_present = vub300->card_present; - int new_card_present = - (0x0001 & vub300->system_port_status.port_flags) ? 1 : 0; - vub300->read_only = - (0x0010 & vub300->system_port_status.port_flags) ? 1 : 0; - if (new_card_present && !old_card_present) { - dev_info(&vub300->udev->dev, "card just inserted\n"); - vub300->card_present = 1; - vub300->bus_width = 0; - if (disable_offload_processing) - strncpy(vub300->vub_name, "EMPTY Processing Disabled", - sizeof(vub300->vub_name)); - else - vub300->vub_name[0] = 0; - mmc_detect_change(vub300->mmc, 1); - } else if (!new_card_present && old_card_present) { - dev_info(&vub300->udev->dev, "card just ejected\n"); - vub300->card_present = 0; - mmc_detect_change(vub300->mmc, 0); - } else { - /* no change */ - } -} - -static void __add_offloaded_reg_to_fifo(struct vub300_mmc_host *vub300, - struct offload_registers_access - *register_access, u8 func) -{ - u8 r = vub300->fn[func].offload_point + vub300->fn[func].offload_count; - memcpy(&vub300->fn[func].reg[MAXREGMASK & r], register_access, - sizeof(struct offload_registers_access)); - vub300->fn[func].offload_count += 1; - vub300->total_offload_count += 1; -} - -static void add_offloaded_reg(struct vub300_mmc_host *vub300, - struct offload_registers_access *register_access) -{ - u32 Register = ((0x03 & register_access->command_byte[0]) << 15) - | ((0xFF & register_access->command_byte[1]) << 7) - | ((0xFE & register_access->command_byte[2]) >> 1); - u8 func = ((0x70 & register_access->command_byte[0]) >> 4); - u8 regs = vub300->dynamic_register_count; - u8 i = 0; - while (0 < regs-- && 1 == vub300->sdio_register[i].activate) { - if (vub300->sdio_register[i].func_num == func && - vub300->sdio_register[i].sdio_reg == Register) { - if (vub300->sdio_register[i].prepared == 0) - vub300->sdio_register[i].prepared = 1; - vub300->sdio_register[i].response = - register_access->Respond_Byte[2]; - vub300->sdio_register[i].regvalue = - register_access->Respond_Byte[3]; - return; - } else { - i += 1; - continue; - } - }; - __add_offloaded_reg_to_fifo(vub300, register_access, func); -} - -static void check_vub300_port_status(struct vub300_mmc_host *vub300) -{ - /* - * cmd_mutex is held by vub300_pollwork_thread, - * vub300_deadwork_thread or vub300_cmndwork_thread - */ - int retval; - retval = - usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0), - GET_SYSTEM_PORT_STATUS, - USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0x0000, 0x0000, &vub300->system_port_status, - sizeof(vub300->system_port_status), HZ); - if (sizeof(vub300->system_port_status) == retval) - new_system_port_status(vub300); -} - -static void __vub300_irqpoll_response(struct vub300_mmc_host *vub300) -{ - /* cmd_mutex is held by vub300_pollwork_thread */ - if (vub300->command_res_urb->actual_length == 0) - return; - - switch (vub300->resp.common.header_type) { - case RESPONSE_INTERRUPT: - mutex_lock(&vub300->irq_mutex); - if (vub300->irq_enabled) - mmc_signal_sdio_irq(vub300->mmc); - else - vub300->irqs_queued += 1; - vub300->irq_disabled = 1; - mutex_unlock(&vub300->irq_mutex); - break; - case RESPONSE_ERROR: - if (vub300->resp.error.error_code == SD_ERROR_NO_DEVICE) - check_vub300_port_status(vub300); - break; - case RESPONSE_STATUS: - vub300->system_port_status = vub300->resp.status; - new_system_port_status(vub300); - if (!vub300->card_present) - vub300_queue_poll_work(vub300, HZ / 5); - break; - case RESPONSE_IRQ_DISABLED: - { - int offloaded_data_length = vub300->resp.common.header_size - 3; - int register_count = offloaded_data_length >> 3; - int ri = 0; - while (register_count--) { - add_offloaded_reg(vub300, &vub300->resp.irq.reg[ri]); - ri += 1; - } - mutex_lock(&vub300->irq_mutex); - if (vub300->irq_enabled) - mmc_signal_sdio_irq(vub300->mmc); - else - vub300->irqs_queued += 1; - vub300->irq_disabled = 1; - mutex_unlock(&vub300->irq_mutex); - break; - } - case RESPONSE_IRQ_ENABLED: - { - int offloaded_data_length = vub300->resp.common.header_size - 3; - int register_count = offloaded_data_length >> 3; - int ri = 0; - while (register_count--) { - add_offloaded_reg(vub300, &vub300->resp.irq.reg[ri]); - ri += 1; - } - mutex_lock(&vub300->irq_mutex); - if (vub300->irq_enabled) - mmc_signal_sdio_irq(vub300->mmc); - else if (vub300->irqs_queued) - vub300->irqs_queued += 1; - else - vub300->irqs_queued += 1; - vub300->irq_disabled = 0; - mutex_unlock(&vub300->irq_mutex); - break; - } - case RESPONSE_NO_INTERRUPT: - vub300_queue_poll_work(vub300, 1); - break; - default: - break; - } -} - -static void __do_poll(struct vub300_mmc_host *vub300) -{ - /* cmd_mutex is held by vub300_pollwork_thread */ - long commretval; - mod_timer(&vub300->inactivity_timer, jiffies + HZ); - init_completion(&vub300->irqpoll_complete); - send_irqpoll(vub300); - commretval = wait_for_completion_timeout(&vub300->irqpoll_complete, - msecs_to_jiffies(500)); - if (vub300->usb_transport_fail) { - /* no need to do anything */ - } else if (commretval == 0) { - vub300->usb_timed_out = 1; - usb_kill_urb(vub300->command_out_urb); - usb_kill_urb(vub300->command_res_urb); - } else if (commretval < 0) { - vub300_queue_poll_work(vub300, 1); - } else { /* commretval > 0 */ - __vub300_irqpoll_response(vub300); - } -} - -/* this thread runs only when the driver - * is trying to poll the device for an IRQ - */ -static void vub300_pollwork_thread(struct work_struct *work) -{ /* NOT irq */ - struct vub300_mmc_host *vub300 = container_of(work, - struct vub300_mmc_host, pollwork.work); - if (!vub300->interface) { - kref_put(&vub300->kref, vub300_delete); - return; - } - mutex_lock(&vub300->cmd_mutex); - if (vub300->cmd) { - vub300_queue_poll_work(vub300, 1); - } else if (!vub300->card_present) { - /* no need to do anything */ - } else { /* vub300->card_present */ - mutex_lock(&vub300->irq_mutex); - if (!vub300->irq_enabled) { - mutex_unlock(&vub300->irq_mutex); - } else if (vub300->irqs_queued) { - vub300->irqs_queued -= 1; - mmc_signal_sdio_irq(vub300->mmc); - mod_timer(&vub300->inactivity_timer, jiffies + HZ); - mutex_unlock(&vub300->irq_mutex); - } else { /* NOT vub300->irqs_queued */ - mutex_unlock(&vub300->irq_mutex); - __do_poll(vub300); - } - } - mutex_unlock(&vub300->cmd_mutex); - kref_put(&vub300->kref, vub300_delete); -} - -static void vub300_deadwork_thread(struct work_struct *work) -{ /* NOT irq */ - struct vub300_mmc_host *vub300 = - container_of(work, struct vub300_mmc_host, deadwork); - if (!vub300->interface) { - kref_put(&vub300->kref, vub300_delete); - return; - } - mutex_lock(&vub300->cmd_mutex); - if (vub300->cmd) { - /* - * a command got in as the inactivity - * timer expired - so we just let the - * processing of the command show if - * the device is dead - */ - } else if (vub300->card_present) { - check_vub300_port_status(vub300); - } else if (vub300->mmc && vub300->mmc->card && - mmc_card_present(vub300->mmc->card)) { - /* - * the MMC core must not have responded - * to the previous indication - lets - * hope that it eventually does so we - * will just ignore this for now - */ - } else { - check_vub300_port_status(vub300); - } - mod_timer(&vub300->inactivity_timer, jiffies + HZ); - mutex_unlock(&vub300->cmd_mutex); - kref_put(&vub300->kref, vub300_delete); -} - -static void vub300_inactivity_timer_expired(unsigned long data) -{ /* softirq */ - struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)data; - if (!vub300->interface) { - kref_put(&vub300->kref, vub300_delete); - } else if (vub300->cmd) { - mod_timer(&vub300->inactivity_timer, jiffies + HZ); - } else { - vub300_queue_dead_work(vub300); - mod_timer(&vub300->inactivity_timer, jiffies + HZ); - } -} - -static int vub300_response_error(u8 error_code) -{ - switch (error_code) { - case SD_ERROR_PIO_TIMEOUT: - case SD_ERROR_1BIT_TIMEOUT: - case SD_ERROR_4BIT_TIMEOUT: - return -ETIMEDOUT; - case SD_ERROR_STAT_DATA: - case SD_ERROR_OVERRUN: - case SD_ERROR_STAT_CMD: - case SD_ERROR_STAT_CMD_TIMEOUT: - case SD_ERROR_SDCRDY_STUCK: - case SD_ERROR_UNHANDLED: - case SD_ERROR_1BIT_CRC_WRONG: - case SD_ERROR_4BIT_CRC_WRONG: - case SD_ERROR_1BIT_CRC_ERROR: - case SD_ERROR_4BIT_CRC_ERROR: - case SD_ERROR_NO_CMD_ENDBIT: - case SD_ERROR_NO_1BIT_DATEND: - case SD_ERROR_NO_4BIT_DATEND: - case SD_ERROR_1BIT_DATA_TIMEOUT: - case SD_ERROR_4BIT_DATA_TIMEOUT: - case SD_ERROR_1BIT_UNEXPECTED_TIMEOUT: - case SD_ERROR_4BIT_UNEXPECTED_TIMEOUT: - return -EILSEQ; - case 33: - return -EILSEQ; - case SD_ERROR_ILLEGAL_COMMAND: - return -EINVAL; - case SD_ERROR_NO_DEVICE: - return -ENOMEDIUM; - default: - return -ENODEV; - } -} - -static void command_res_completed(struct urb *urb) -{ /* urb completion handler - hardirq */ - struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context; - if (urb->status) { - /* we have to let the initiator handle the error */ - } else if (vub300->command_res_urb->actual_length == 0) { - /* - * we have seen this happen once or twice and - * we suspect a buggy USB host controller - */ - } else if (!vub300->data) { - /* this means that the command (typically CMD52) suceeded */ - } else if (vub300->resp.common.header_type != 0x02) { - /* - * this is an error response from the VUB300 chip - * and we let the initiator handle it - */ - } else if (vub300->urb) { - vub300->cmd->error = - vub300_response_error(vub300->resp.error.error_code); - usb_unlink_urb(vub300->urb); - } else { - vub300->cmd->error = - vub300_response_error(vub300->resp.error.error_code); - usb_sg_cancel(&vub300->sg_request); - } - complete(&vub300->command_complete); /* got_response_in */ -} - -static void command_out_completed(struct urb *urb) -{ /* urb completion handler - hardirq */ - struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context; - if (urb->status) { - complete(&vub300->command_complete); - } else { - int ret; - unsigned int pipe = - usb_rcvbulkpipe(vub300->udev, vub300->cmnd_res_ep); - usb_fill_bulk_urb(vub300->command_res_urb, vub300->udev, pipe, - &vub300->resp, sizeof(vub300->resp), - command_res_completed, vub300); - vub300->command_res_urb->actual_length = 0; - ret = usb_submit_urb(vub300->command_res_urb, GFP_ATOMIC); - if (ret == 0) { - /* - * the urb completion handler will call - * our completion handler - */ - } else { - /* - * and thus we only call it directly - * when it will not be called - */ - complete(&vub300->command_complete); - } - } -} - -/* - * the STUFF bits are masked out for the comparisons - */ -static void snoop_block_size_and_bus_width(struct vub300_mmc_host *vub300, - u32 cmd_arg) -{ - if ((0xFBFFFE00 & cmd_arg) == 0x80022200) - vub300->fbs[1] = (cmd_arg << 8) | (0x00FF & vub300->fbs[1]); - else if ((0xFBFFFE00 & cmd_arg) == 0x80022000) - vub300->fbs[1] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[1]); - else if ((0xFBFFFE00 & cmd_arg) == 0x80042200) - vub300->fbs[2] = (cmd_arg << 8) | (0x00FF & vub300->fbs[2]); - else if ((0xFBFFFE00 & cmd_arg) == 0x80042000) - vub300->fbs[2] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[2]); - else if ((0xFBFFFE00 & cmd_arg) == 0x80062200) - vub300->fbs[3] = (cmd_arg << 8) | (0x00FF & vub300->fbs[3]); - else if ((0xFBFFFE00 & cmd_arg) == 0x80062000) - vub300->fbs[3] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[3]); - else if ((0xFBFFFE00 & cmd_arg) == 0x80082200) - vub300->fbs[4] = (cmd_arg << 8) | (0x00FF & vub300->fbs[4]); - else if ((0xFBFFFE00 & cmd_arg) == 0x80082000) - vub300->fbs[4] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[4]); - else if ((0xFBFFFE00 & cmd_arg) == 0x800A2200) - vub300->fbs[5] = (cmd_arg << 8) | (0x00FF & vub300->fbs[5]); - else if ((0xFBFFFE00 & cmd_arg) == 0x800A2000) - vub300->fbs[5] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[5]); - else if ((0xFBFFFE00 & cmd_arg) == 0x800C2200) - vub300->fbs[6] = (cmd_arg << 8) | (0x00FF & vub300->fbs[6]); - else if ((0xFBFFFE00 & cmd_arg) == 0x800C2000) - vub300->fbs[6] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[6]); - else if ((0xFBFFFE00 & cmd_arg) == 0x800E2200) - vub300->fbs[7] = (cmd_arg << 8) | (0x00FF & vub300->fbs[7]); - else if ((0xFBFFFE00 & cmd_arg) == 0x800E2000) - vub300->fbs[7] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[7]); - else if ((0xFBFFFE03 & cmd_arg) == 0x80000E00) - vub300->bus_width = 1; - else if ((0xFBFFFE03 & cmd_arg) == 0x80000E02) - vub300->bus_width = 4; -} - -static void send_command(struct vub300_mmc_host *vub300) -{ - /* cmd_mutex is held by vub300_cmndwork_thread */ - struct mmc_command *cmd = vub300->cmd; - struct mmc_data *data = vub300->data; - int retval; - int i; - u8 response_type; - if (vub300->app_spec) { - switch (cmd->opcode) { - case 6: - response_type = SDRT_1; - vub300->resp_len = 6; - if (0x00000000 == (0x00000003 & cmd->arg)) - vub300->bus_width = 1; - else if (0x00000002 == (0x00000003 & cmd->arg)) - vub300->bus_width = 4; - else - dev_err(&vub300->udev->dev, - "unexpected ACMD6 bus_width=%d\n", - 0x00000003 & cmd->arg); - break; - case 13: - response_type = SDRT_1; - vub300->resp_len = 6; - break; - case 22: - response_type = SDRT_1; - vub300->resp_len = 6; - break; - case 23: - response_type = SDRT_1; - vub300->resp_len = 6; - break; - case 41: - response_type = SDRT_3; - vub300->resp_len = 6; - break; - case 42: - response_type = SDRT_1; - vub300->resp_len = 6; - break; - case 51: - response_type = SDRT_1; - vub300->resp_len = 6; - break; - case 55: - response_type = SDRT_1; - vub300->resp_len = 6; - break; - default: - vub300->resp_len = 0; - cmd->error = -EINVAL; - complete(&vub300->command_complete); - return; - } - vub300->app_spec = 0; - } else { - switch (cmd->opcode) { - case 0: - response_type = SDRT_NONE; - vub300->resp_len = 0; - break; - case 1: - response_type = SDRT_3; - vub300->resp_len = 6; - break; - case 2: - response_type = SDRT_2; - vub300->resp_len = 17; - break; - case 3: - response_type = SDRT_6; - vub300->resp_len = 6; - break; - case 4: - response_type = SDRT_NONE; - vub300->resp_len = 0; - break; - case 5: - response_type = SDRT_4; - vub300->resp_len = 6; - break; - case 6: - response_type = SDRT_1; - vub300->resp_len = 6; - break; - case 7: - response_type = SDRT_1B; - vub300->resp_len = 6; - break; - case 8: - response_type = SDRT_7; - vub300->resp_len = 6; - break; - case 9: - response_type = SDRT_2; - vub300->resp_len = 17; - break; - case 10: - response_type = SDRT_2; - vub300->resp_len = 17; - break; - case 12: - response_type = SDRT_1B; - vub300->resp_len = 6; - break; - case 13: - response_type = SDRT_1; - vub300->resp_len = 6; - break; - case 15: - response_type = SDRT_NONE; - vub300->resp_len = 0; - break; - case 16: - for (i = 0; i < ARRAY_SIZE(vub300->fbs); i++) - vub300->fbs[i] = 0xFFFF & cmd->arg; - response_type = SDRT_1; - vub300->resp_len = 6; - break; - case 17: - case 18: - case 24: - case 25: - case 27: - response_type = SDRT_1; - vub300->resp_len = 6; - break; - case 28: - case 29: - response_type = SDRT_1B; - vub300->resp_len = 6; - break; - case 30: - case 32: - case 33: - response_type = SDRT_1; - vub300->resp_len = 6; - break; - case 38: - response_type = SDRT_1B; - vub300->resp_len = 6; - break; - case 42: - response_type = SDRT_1; - vub300->resp_len = 6; - break; - case 52: - response_type = SDRT_5; - vub300->resp_len = 6; - snoop_block_size_and_bus_width(vub300, cmd->arg); - break; - case 53: - response_type = SDRT_5; - vub300->resp_len = 6; - break; - case 55: - response_type = SDRT_1; - vub300->resp_len = 6; - vub300->app_spec = 1; - break; - case 56: - response_type = SDRT_1; - vub300->resp_len = 6; - break; - default: - vub300->resp_len = 0; - cmd->error = -EINVAL; - complete(&vub300->command_complete); - return; - } - } - /* - * it is a shame that we can not use "sizeof(struct sd_command_header)" - * this is because the packet _must_ be padded to 64 bytes - */ - vub300->cmnd.head.header_size = 20; - vub300->cmnd.head.header_type = 0x00; - vub300->cmnd.head.port_number = 0; /* "0" means port 1 */ - vub300->cmnd.head.command_type = 0x00; /* standard read command */ - vub300->cmnd.head.response_type = response_type; - vub300->cmnd.head.command_index = cmd->opcode; - vub300->cmnd.head.arguments[0] = cmd->arg >> 24; - vub300->cmnd.head.arguments[1] = cmd->arg >> 16; - vub300->cmnd.head.arguments[2] = cmd->arg >> 8; - vub300->cmnd.head.arguments[3] = cmd->arg >> 0; - if (cmd->opcode == 52) { - int fn = 0x7 & (cmd->arg >> 28); - vub300->cmnd.head.block_count[0] = 0; - vub300->cmnd.head.block_count[1] = 0; - vub300->cmnd.head.block_size[0] = (vub300->fbs[fn] >> 8) & 0xFF; - vub300->cmnd.head.block_size[1] = (vub300->fbs[fn] >> 0) & 0xFF; - vub300->cmnd.head.command_type = 0x00; - vub300->cmnd.head.transfer_size[0] = 0; - vub300->cmnd.head.transfer_size[1] = 0; - vub300->cmnd.head.transfer_size[2] = 0; - vub300->cmnd.head.transfer_size[3] = 0; - } else if (!data) { - vub300->cmnd.head.block_count[0] = 0; - vub300->cmnd.head.block_count[1] = 0; - vub300->cmnd.head.block_size[0] = (vub300->fbs[0] >> 8) & 0xFF; - vub300->cmnd.head.block_size[1] = (vub300->fbs[0] >> 0) & 0xFF; - vub300->cmnd.head.command_type = 0x00; - vub300->cmnd.head.transfer_size[0] = 0; - vub300->cmnd.head.transfer_size[1] = 0; - vub300->cmnd.head.transfer_size[2] = 0; - vub300->cmnd.head.transfer_size[3] = 0; - } else if (cmd->opcode == 53) { - int fn = 0x7 & (cmd->arg >> 28); - if (0x08 & vub300->cmnd.head.arguments[0]) { /* BLOCK MODE */ - vub300->cmnd.head.block_count[0] = - (data->blocks >> 8) & 0xFF; - vub300->cmnd.head.block_count[1] = - (data->blocks >> 0) & 0xFF; - vub300->cmnd.head.block_size[0] = - (data->blksz >> 8) & 0xFF; - vub300->cmnd.head.block_size[1] = - (data->blksz >> 0) & 0xFF; - } else { /* BYTE MODE */ - vub300->cmnd.head.block_count[0] = 0; - vub300->cmnd.head.block_count[1] = 0; - vub300->cmnd.head.block_size[0] = - (vub300->datasize >> 8) & 0xFF; - vub300->cmnd.head.block_size[1] = - (vub300->datasize >> 0) & 0xFF; - } - vub300->cmnd.head.command_type = - (MMC_DATA_READ & data->flags) ? 0x00 : 0x80; - vub300->cmnd.head.transfer_size[0] = - (vub300->datasize >> 24) & 0xFF; - vub300->cmnd.head.transfer_size[1] = - (vub300->datasize >> 16) & 0xFF; - vub300->cmnd.head.transfer_size[2] = - (vub300->datasize >> 8) & 0xFF; - vub300->cmnd.head.transfer_size[3] = - (vub300->datasize >> 0) & 0xFF; - if (vub300->datasize < vub300->fbs[fn]) { - vub300->cmnd.head.block_count[0] = 0; - vub300->cmnd.head.block_count[1] = 0; - } - } else { - vub300->cmnd.head.block_count[0] = (data->blocks >> 8) & 0xFF; - vub300->cmnd.head.block_count[1] = (data->blocks >> 0) & 0xFF; - vub300->cmnd.head.block_size[0] = (data->blksz >> 8) & 0xFF; - vub300->cmnd.head.block_size[1] = (data->blksz >> 0) & 0xFF; - vub300->cmnd.head.command_type = - (MMC_DATA_READ & data->flags) ? 0x00 : 0x80; - vub300->cmnd.head.transfer_size[0] = - (vub300->datasize >> 24) & 0xFF; - vub300->cmnd.head.transfer_size[1] = - (vub300->datasize >> 16) & 0xFF; - vub300->cmnd.head.transfer_size[2] = - (vub300->datasize >> 8) & 0xFF; - vub300->cmnd.head.transfer_size[3] = - (vub300->datasize >> 0) & 0xFF; - if (vub300->datasize < vub300->fbs[0]) { - vub300->cmnd.head.block_count[0] = 0; - vub300->cmnd.head.block_count[1] = 0; - } - } - if (vub300->cmnd.head.block_size[0] || vub300->cmnd.head.block_size[1]) { - u16 block_size = vub300->cmnd.head.block_size[1] | - (vub300->cmnd.head.block_size[0] << 8); - u16 block_boundary = FIRMWARE_BLOCK_BOUNDARY - - (FIRMWARE_BLOCK_BOUNDARY % block_size); - vub300->cmnd.head.block_boundary[0] = - (block_boundary >> 8) & 0xFF; - vub300->cmnd.head.block_boundary[1] = - (block_boundary >> 0) & 0xFF; - } else { - vub300->cmnd.head.block_boundary[0] = 0; - vub300->cmnd.head.block_boundary[1] = 0; - } - usb_fill_bulk_urb(vub300->command_out_urb, vub300->udev, - usb_sndbulkpipe(vub300->udev, vub300->cmnd_out_ep), - &vub300->cmnd, sizeof(vub300->cmnd), - command_out_completed, vub300); - retval = usb_submit_urb(vub300->command_out_urb, GFP_KERNEL); - if (retval < 0) { - cmd->error = retval; - complete(&vub300->command_complete); - return; - } else { - return; - } -} - -/* - * timer callback runs in atomic mode - * so it cannot call usb_kill_urb() - */ -static void vub300_sg_timed_out(unsigned long data) -{ - struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)data; - vub300->usb_timed_out = 1; - usb_sg_cancel(&vub300->sg_request); - usb_unlink_urb(vub300->command_out_urb); - usb_unlink_urb(vub300->command_res_urb); -} - -static u16 roundup_to_multiple_of_64(u16 number) -{ - return 0xFFC0 & (0x3F + number); -} - -/* - * this is a separate function to solve the 80 column width restriction - */ -static void __download_offload_pseudocode(struct vub300_mmc_host *vub300, - const struct firmware *fw) -{ - u8 register_count = 0; - u16 ts = 0; - u16 interrupt_size = 0; - const u8 *data = fw->data; - int size = fw->size; - u8 c; - dev_info(&vub300->udev->dev, "using %s for SDIO offload processing\n", - vub300->vub_name); - do { - c = *data++; - } while (size-- && c); /* skip comment */ - dev_info(&vub300->udev->dev, "using offload firmware %s %s\n", fw->data, - vub300->vub_name); - if (size < 4) { - dev_err(&vub300->udev->dev, - "corrupt offload pseudocode in firmware %s\n", - vub300->vub_name); - strncpy(vub300->vub_name, "corrupt offload pseudocode", - sizeof(vub300->vub_name)); - return; - } - interrupt_size += *data++; - size -= 1; - interrupt_size <<= 8; - interrupt_size += *data++; - size -= 1; - if (interrupt_size < size) { - u16 xfer_length = roundup_to_multiple_of_64(interrupt_size); - u8 *xfer_buffer = kmalloc(xfer_length, GFP_KERNEL); - if (xfer_buffer) { - int retval; - memcpy(xfer_buffer, data, interrupt_size); - memset(xfer_buffer + interrupt_size, 0, - xfer_length - interrupt_size); - size -= interrupt_size; - data += interrupt_size; - retval = - usb_control_msg(vub300->udev, - usb_sndctrlpipe(vub300->udev, 0), - SET_INTERRUPT_PSEUDOCODE, - USB_DIR_OUT | USB_TYPE_VENDOR | - USB_RECIP_DEVICE, 0x0000, 0x0000, - xfer_buffer, xfer_length, HZ); - kfree(xfer_buffer); - if (retval < 0) { - strncpy(vub300->vub_name, - "SDIO pseudocode download failed", - sizeof(vub300->vub_name)); - return; - } - } else { - dev_err(&vub300->udev->dev, - "not enough memory for xfer buffer to send" - " INTERRUPT_PSEUDOCODE for %s %s\n", fw->data, - vub300->vub_name); - strncpy(vub300->vub_name, - "SDIO interrupt pseudocode download failed", - sizeof(vub300->vub_name)); - return; - } - } else { - dev_err(&vub300->udev->dev, - "corrupt interrupt pseudocode in firmware %s %s\n", - fw->data, vub300->vub_name); - strncpy(vub300->vub_name, "corrupt interrupt pseudocode", - sizeof(vub300->vub_name)); - return; - } - ts += *data++; - size -= 1; - ts <<= 8; - ts += *data++; - size -= 1; - if (ts < size) { - u16 xfer_length = roundup_to_multiple_of_64(ts); - u8 *xfer_buffer = kmalloc(xfer_length, GFP_KERNEL); - if (xfer_buffer) { - int retval; - memcpy(xfer_buffer, data, ts); - memset(xfer_buffer + ts, 0, - xfer_length - ts); - size -= ts; - data += ts; - retval = - usb_control_msg(vub300->udev, - usb_sndctrlpipe(vub300->udev, 0), - SET_TRANSFER_PSEUDOCODE, - USB_DIR_OUT | USB_TYPE_VENDOR | - USB_RECIP_DEVICE, 0x0000, 0x0000, - xfer_buffer, xfer_length, HZ); - kfree(xfer_buffer); - if (retval < 0) { - strncpy(vub300->vub_name, - "SDIO pseudocode download failed", - sizeof(vub300->vub_name)); - return; - } - } else { - dev_err(&vub300->udev->dev, - "not enough memory for xfer buffer to send" - " TRANSFER_PSEUDOCODE for %s %s\n", fw->data, - vub300->vub_name); - strncpy(vub300->vub_name, - "SDIO transfer pseudocode download failed", - sizeof(vub300->vub_name)); - return; - } - } else { - dev_err(&vub300->udev->dev, - "corrupt transfer pseudocode in firmware %s %s\n", - fw->data, vub300->vub_name); - strncpy(vub300->vub_name, "corrupt transfer pseudocode", - sizeof(vub300->vub_name)); - return; - } - register_count += *data++; - size -= 1; - if (register_count * 4 == size) { - int I = vub300->dynamic_register_count = register_count; - int i = 0; - while (I--) { - unsigned int func_num = 0; - vub300->sdio_register[i].func_num = *data++; - size -= 1; - func_num += *data++; - size -= 1; - func_num <<= 8; - func_num += *data++; - size -= 1; - func_num <<= 8; - func_num += *data++; - size -= 1; - vub300->sdio_register[i].sdio_reg = func_num; - vub300->sdio_register[i].activate = 1; - vub300->sdio_register[i].prepared = 0; - i += 1; - } - dev_info(&vub300->udev->dev, - "initialized %d dynamic pseudocode registers\n", - vub300->dynamic_register_count); - return; - } else { - dev_err(&vub300->udev->dev, - "corrupt dynamic registers in firmware %s\n", - vub300->vub_name); - strncpy(vub300->vub_name, "corrupt dynamic registers", - sizeof(vub300->vub_name)); - return; - } -} - -/* - * if the binary containing the EMPTY PseudoCode can not be found - * vub300->vub_name is set anyway in order to prevent an automatic retry - */ -static void download_offload_pseudocode(struct vub300_mmc_host *vub300) -{ - struct mmc_card *card = vub300->mmc->card; - int sdio_funcs = card->sdio_funcs; - const struct firmware *fw = NULL; - int l = snprintf(vub300->vub_name, sizeof(vub300->vub_name), - "vub_%04X%04X", card->cis.vendor, card->cis.device); - int n = 0; - int retval; - for (n = 0; n < sdio_funcs; n++) { - struct sdio_func *sf = card->sdio_func[n]; - l += snprintf(vub300->vub_name + l, - sizeof(vub300->vub_name) - l, "_%04X%04X", - sf->vendor, sf->device); - }; - snprintf(vub300->vub_name + l, sizeof(vub300->vub_name) - l, ".bin"); - dev_info(&vub300->udev->dev, "requesting offload firmware %s\n", - vub300->vub_name); - retval = request_firmware(&fw, vub300->vub_name, &card->dev); - if (retval < 0) { - strncpy(vub300->vub_name, "vub_default.bin", - sizeof(vub300->vub_name)); - retval = request_firmware(&fw, vub300->vub_name, &card->dev); - if (retval < 0) { - strncpy(vub300->vub_name, - "no SDIO offload firmware found", - sizeof(vub300->vub_name)); - } else { - __download_offload_pseudocode(vub300, fw); - release_firmware(fw); - } - } else { - __download_offload_pseudocode(vub300, fw); - release_firmware(fw); - } -} - -static void vub300_usb_bulk_msg_completion(struct urb *urb) -{ /* urb completion handler - hardirq */ - complete((struct completion *)urb->context); -} - -static int vub300_usb_bulk_msg(struct vub300_mmc_host *vub300, - unsigned int pipe, void *data, int len, - int *actual_length, int timeout_msecs) -{ - /* cmd_mutex is held by vub300_cmndwork_thread */ - struct usb_device *usb_dev = vub300->udev; - struct completion done; - int retval; - vub300->urb = usb_alloc_urb(0, GFP_KERNEL); - if (!vub300->urb) - return -ENOMEM; - usb_fill_bulk_urb(vub300->urb, usb_dev, pipe, data, len, - vub300_usb_bulk_msg_completion, NULL); - init_completion(&done); - vub300->urb->context = &done; - vub300->urb->actual_length = 0; - retval = usb_submit_urb(vub300->urb, GFP_KERNEL); - if (unlikely(retval)) - goto out; - if (!wait_for_completion_timeout - (&done, msecs_to_jiffies(timeout_msecs))) { - retval = -ETIMEDOUT; - usb_kill_urb(vub300->urb); - } else { - retval = vub300->urb->status; - } -out: - *actual_length = vub300->urb->actual_length; - usb_free_urb(vub300->urb); - vub300->urb = NULL; - return retval; -} - -static int __command_read_data(struct vub300_mmc_host *vub300, - struct mmc_command *cmd, struct mmc_data *data) -{ - /* cmd_mutex is held by vub300_cmndwork_thread */ - int linear_length = vub300->datasize; - int padded_length = vub300->large_usb_packets ? - ((511 + linear_length) >> 9) << 9 : - ((63 + linear_length) >> 6) << 6; - if ((padded_length == linear_length) || !pad_input_to_usb_pkt) { - int result; - unsigned pipe; - pipe = usb_rcvbulkpipe(vub300->udev, vub300->data_inp_ep); - result = usb_sg_init(&vub300->sg_request, vub300->udev, - pipe, 0, data->sg, - data->sg_len, 0, GFP_KERNEL); - if (result < 0) { - usb_unlink_urb(vub300->command_out_urb); - usb_unlink_urb(vub300->command_res_urb); - cmd->error = result; - data->bytes_xfered = 0; - return 0; - } else { - vub300->sg_transfer_timer.expires = - jiffies + msecs_to_jiffies(2000 + - (linear_length / 16384)); - add_timer(&vub300->sg_transfer_timer); - usb_sg_wait(&vub300->sg_request); - del_timer(&vub300->sg_transfer_timer); - if (vub300->sg_request.status < 0) { - cmd->error = vub300->sg_request.status; - data->bytes_xfered = 0; - return 0; - } else { - data->bytes_xfered = vub300->datasize; - return linear_length; - } - } - } else { - u8 *buf = kmalloc(padded_length, GFP_KERNEL); - if (buf) { - int result; - unsigned pipe = usb_rcvbulkpipe(vub300->udev, - vub300->data_inp_ep); - int actual_length = 0; - result = vub300_usb_bulk_msg(vub300, pipe, buf, - padded_length, &actual_length, - 2000 + (padded_length / 16384)); - if (result < 0) { - cmd->error = result; - data->bytes_xfered = 0; - kfree(buf); - return 0; - } else if (actual_length < linear_length) { - cmd->error = -EREMOTEIO; - data->bytes_xfered = 0; - kfree(buf); - return 0; - } else { - sg_copy_from_buffer(data->sg, data->sg_len, buf, - linear_length); - kfree(buf); - data->bytes_xfered = vub300->datasize; - return linear_length; - } - } else { - cmd->error = -ENOMEM; - data->bytes_xfered = 0; - return 0; - } - } -} - -static int __command_write_data(struct vub300_mmc_host *vub300, - struct mmc_command *cmd, struct mmc_data *data) -{ - /* cmd_mutex is held by vub300_cmndwork_thread */ - unsigned pipe = usb_sndbulkpipe(vub300->udev, vub300->data_out_ep); - int linear_length = vub300->datasize; - int modulo_64_length = linear_length & 0x003F; - int modulo_512_length = linear_length & 0x01FF; - if (linear_length < 64) { - int result; - int actual_length; - sg_copy_to_buffer(data->sg, data->sg_len, - vub300->padded_buffer, - sizeof(vub300->padded_buffer)); - memset(vub300->padded_buffer + linear_length, 0, - sizeof(vub300->padded_buffer) - linear_length); - result = vub300_usb_bulk_msg(vub300, pipe, vub300->padded_buffer, - sizeof(vub300->padded_buffer), - &actual_length, 2000 + - (sizeof(vub300->padded_buffer) / - 16384)); - if (result < 0) { - cmd->error = result; - data->bytes_xfered = 0; - } else { - data->bytes_xfered = vub300->datasize; - } - } else if ((!vub300->large_usb_packets && (0 < modulo_64_length)) || - (vub300->large_usb_packets && (64 > modulo_512_length)) - ) { /* don't you just love these work-rounds */ - int padded_length = ((63 + linear_length) >> 6) << 6; - u8 *buf = kmalloc(padded_length, GFP_KERNEL); - if (buf) { - int result; - int actual_length; - sg_copy_to_buffer(data->sg, data->sg_len, buf, - padded_length); - memset(buf + linear_length, 0, - padded_length - linear_length); - result = - vub300_usb_bulk_msg(vub300, pipe, buf, - padded_length, &actual_length, - 2000 + padded_length / 16384); - kfree(buf); - if (result < 0) { - cmd->error = result; - data->bytes_xfered = 0; - } else { - data->bytes_xfered = vub300->datasize; - } - } else { - cmd->error = -ENOMEM; - data->bytes_xfered = 0; - } - } else { /* no data padding required */ - int result; - unsigned char buf[64 * 4]; - sg_copy_to_buffer(data->sg, data->sg_len, buf, sizeof(buf)); - result = usb_sg_init(&vub300->sg_request, vub300->udev, - pipe, 0, data->sg, - data->sg_len, 0, GFP_KERNEL); - if (result < 0) { - usb_unlink_urb(vub300->command_out_urb); - usb_unlink_urb(vub300->command_res_urb); - cmd->error = result; - data->bytes_xfered = 0; - } else { - vub300->sg_transfer_timer.expires = - jiffies + msecs_to_jiffies(2000 + - linear_length / 16384); - add_timer(&vub300->sg_transfer_timer); - usb_sg_wait(&vub300->sg_request); - if (cmd->error) { - data->bytes_xfered = 0; - } else { - del_timer(&vub300->sg_transfer_timer); - if (vub300->sg_request.status < 0) { - cmd->error = vub300->sg_request.status; - data->bytes_xfered = 0; - } else { - data->bytes_xfered = vub300->datasize; - } - } - } - } - return linear_length; -} - -static void __vub300_command_response(struct vub300_mmc_host *vub300, - struct mmc_command *cmd, - struct mmc_data *data, int data_length) -{ - /* cmd_mutex is held by vub300_cmndwork_thread */ - long respretval; - int msec_timeout = 1000 + data_length / 4; - respretval = - wait_for_completion_timeout(&vub300->command_complete, - msecs_to_jiffies(msec_timeout)); - if (respretval == 0) { /* TIMED OUT */ - /* we don't know which of "out" and "res" if any failed */ - int result; - vub300->usb_timed_out = 1; - usb_kill_urb(vub300->command_out_urb); - usb_kill_urb(vub300->command_res_urb); - cmd->error = -ETIMEDOUT; - result = usb_lock_device_for_reset(vub300->udev, - vub300->interface); - if (result == 0) { - result = usb_reset_device(vub300->udev); - usb_unlock_device(vub300->udev); - } - } else if (respretval < 0) { - /* we don't know which of "out" and "res" if any failed */ - usb_kill_urb(vub300->command_out_urb); - usb_kill_urb(vub300->command_res_urb); - cmd->error = respretval; - } else if (cmd->error) { - /* - * the error occurred sending the command - * or receiving the response - */ - } else if (vub300->command_out_urb->status) { - vub300->usb_transport_fail = vub300->command_out_urb->status; - cmd->error = -EPROTO == vub300->command_out_urb->status ? - -ESHUTDOWN : vub300->command_out_urb->status; - } else if (vub300->command_res_urb->status) { - vub300->usb_transport_fail = vub300->command_res_urb->status; - cmd->error = -EPROTO == vub300->command_res_urb->status ? - -ESHUTDOWN : vub300->command_res_urb->status; - } else if (vub300->resp.common.header_type == 0x00) { - /* - * the command completed successfully - * and there was no piggybacked data - */ - } else if (vub300->resp.common.header_type == RESPONSE_ERROR) { - cmd->error = - vub300_response_error(vub300->resp.error.error_code); - if (vub300->data) - usb_sg_cancel(&vub300->sg_request); - } else if (vub300->resp.common.header_type == RESPONSE_PIGGYBACKED) { - int offloaded_data_length = - vub300->resp.common.header_size - - sizeof(struct sd_register_header); - int register_count = offloaded_data_length >> 3; - int ri = 0; - while (register_count--) { - add_offloaded_reg(vub300, &vub300->resp.pig.reg[ri]); - ri += 1; - } - vub300->resp.common.header_size = - sizeof(struct sd_register_header); - vub300->resp.common.header_type = 0x00; - cmd->error = 0; - } else if (vub300->resp.common.header_type == RESPONSE_PIG_DISABLED) { - int offloaded_data_length = - vub300->resp.common.header_size - - sizeof(struct sd_register_header); - int register_count = offloaded_data_length >> 3; - int ri = 0; - while (register_count--) { - add_offloaded_reg(vub300, &vub300->resp.pig.reg[ri]); - ri += 1; - } - mutex_lock(&vub300->irq_mutex); - if (vub300->irqs_queued) { - vub300->irqs_queued += 1; - } else if (vub300->irq_enabled) { - vub300->irqs_queued += 1; - vub300_queue_poll_work(vub300, 0); - } else { - vub300->irqs_queued += 1; - } - vub300->irq_disabled = 1; - mutex_unlock(&vub300->irq_mutex); - vub300->resp.common.header_size = - sizeof(struct sd_register_header); - vub300->resp.common.header_type = 0x00; - cmd->error = 0; - } else if (vub300->resp.common.header_type == RESPONSE_PIG_ENABLED) { - int offloaded_data_length = - vub300->resp.common.header_size - - sizeof(struct sd_register_header); - int register_count = offloaded_data_length >> 3; - int ri = 0; - while (register_count--) { - add_offloaded_reg(vub300, &vub300->resp.pig.reg[ri]); - ri += 1; - } - mutex_lock(&vub300->irq_mutex); - if (vub300->irqs_queued) { - vub300->irqs_queued += 1; - } else if (vub300->irq_enabled) { - vub300->irqs_queued += 1; - vub300_queue_poll_work(vub300, 0); - } else { - vub300->irqs_queued += 1; - } - vub300->irq_disabled = 0; - mutex_unlock(&vub300->irq_mutex); - vub300->resp.common.header_size = - sizeof(struct sd_register_header); - vub300->resp.common.header_type = 0x00; - cmd->error = 0; - } else { - cmd->error = -EINVAL; - } -} - -static void construct_request_response(struct vub300_mmc_host *vub300, - struct mmc_command *cmd) -{ - int resp_len = vub300->resp_len; - int less_cmd = (17 == resp_len) ? resp_len : resp_len - 1; - int bytes = 3 & less_cmd; - int words = less_cmd >> 2; - u8 *r = vub300->resp.response.command_response; - if (bytes == 3) { - cmd->resp[words] = (r[1 + (words << 2)] << 24) - | (r[2 + (words << 2)] << 16) - | (r[3 + (words << 2)] << 8); - } else if (bytes == 2) { - cmd->resp[words] = (r[1 + (words << 2)] << 24) - | (r[2 + (words << 2)] << 16); - } else if (bytes == 1) { - cmd->resp[words] = (r[1 + (words << 2)] << 24); - } - while (words-- > 0) { - cmd->resp[words] = (r[1 + (words << 2)] << 24) - | (r[2 + (words << 2)] << 16) - | (r[3 + (words << 2)] << 8) - | (r[4 + (words << 2)] << 0); - } - if ((cmd->opcode == 53) && (0x000000FF & cmd->resp[0])) - cmd->resp[0] &= 0xFFFFFF00; -} - -/* this thread runs only when there is an upper level command req outstanding */ -static void vub300_cmndwork_thread(struct work_struct *work) -{ - struct vub300_mmc_host *vub300 = - container_of(work, struct vub300_mmc_host, cmndwork); - if (!vub300->interface) { - kref_put(&vub300->kref, vub300_delete); - return; - } else { - struct mmc_request *req = vub300->req; - struct mmc_command *cmd = vub300->cmd; - struct mmc_data *data = vub300->data; - int data_length; - mutex_lock(&vub300->cmd_mutex); - init_completion(&vub300->command_complete); - if (likely(vub300->vub_name[0]) || !vub300->mmc->card || - !mmc_card_present(vub300->mmc->card)) { - /* - * the name of the EMPTY Pseudo firmware file - * is used as a flag to indicate that the file - * has been already downloaded to the VUB300 chip - */ - } else if (0 == vub300->mmc->card->sdio_funcs) { - strncpy(vub300->vub_name, "SD memory device", - sizeof(vub300->vub_name)); - } else { - download_offload_pseudocode(vub300); - } - send_command(vub300); - if (!data) - data_length = 0; - else if (MMC_DATA_READ & data->flags) - data_length = __command_read_data(vub300, cmd, data); - else - data_length = __command_write_data(vub300, cmd, data); - __vub300_command_response(vub300, cmd, data, data_length); - vub300->req = NULL; - vub300->cmd = NULL; - vub300->data = NULL; - if (cmd->error) { - if (cmd->error == -ENOMEDIUM) - check_vub300_port_status(vub300); - mutex_unlock(&vub300->cmd_mutex); - mmc_request_done(vub300->mmc, req); - kref_put(&vub300->kref, vub300_delete); - return; - } else { - construct_request_response(vub300, cmd); - vub300->resp_len = 0; - mutex_unlock(&vub300->cmd_mutex); - kref_put(&vub300->kref, vub300_delete); - mmc_request_done(vub300->mmc, req); - return; - } - } -} - -static int examine_cyclic_buffer(struct vub300_mmc_host *vub300, - struct mmc_command *cmd, u8 Function) -{ - /* cmd_mutex is held by vub300_mmc_request */ - u8 cmd0 = 0xFF & (cmd->arg >> 24); - u8 cmd1 = 0xFF & (cmd->arg >> 16); - u8 cmd2 = 0xFF & (cmd->arg >> 8); - u8 cmd3 = 0xFF & (cmd->arg >> 0); - int first = MAXREGMASK & vub300->fn[Function].offload_point; - struct offload_registers_access *rf = &vub300->fn[Function].reg[first]; - if (cmd0 == rf->command_byte[0] && - cmd1 == rf->command_byte[1] && - cmd2 == rf->command_byte[2] && - cmd3 == rf->command_byte[3]) { - u8 checksum = 0x00; - cmd->resp[1] = checksum << 24; - cmd->resp[0] = (rf->Respond_Byte[0] << 24) - | (rf->Respond_Byte[1] << 16) - | (rf->Respond_Byte[2] << 8) - | (rf->Respond_Byte[3] << 0); - vub300->fn[Function].offload_point += 1; - vub300->fn[Function].offload_count -= 1; - vub300->total_offload_count -= 1; - return 1; - } else { - int delta = 1; /* because it does not match the first one */ - u8 register_count = vub300->fn[Function].offload_count - 1; - u32 register_point = vub300->fn[Function].offload_point + 1; - while (0 < register_count) { - int point = MAXREGMASK & register_point; - struct offload_registers_access *r = - &vub300->fn[Function].reg[point]; - if (cmd0 == r->command_byte[0] && - cmd1 == r->command_byte[1] && - cmd2 == r->command_byte[2] && - cmd3 == r->command_byte[3]) { - u8 checksum = 0x00; - cmd->resp[1] = checksum << 24; - cmd->resp[0] = (r->Respond_Byte[0] << 24) - | (r->Respond_Byte[1] << 16) - | (r->Respond_Byte[2] << 8) - | (r->Respond_Byte[3] << 0); - vub300->fn[Function].offload_point += delta; - vub300->fn[Function].offload_count -= delta; - vub300->total_offload_count -= delta; - return 1; - } else { - register_point += 1; - register_count -= 1; - delta += 1; - continue; - } - } - return 0; - } -} - -static int satisfy_request_from_offloaded_data(struct vub300_mmc_host *vub300, - struct mmc_command *cmd) -{ - /* cmd_mutex is held by vub300_mmc_request */ - u8 regs = vub300->dynamic_register_count; - u8 i = 0; - u8 func = FUN(cmd); - u32 reg = REG(cmd); - while (0 < regs--) { - if ((vub300->sdio_register[i].func_num == func) && - (vub300->sdio_register[i].sdio_reg == reg)) { - if (!vub300->sdio_register[i].prepared) { - return 0; - } else if ((0x80000000 & cmd->arg) == 0x80000000) { - /* - * a write to a dynamic register - * nullifies our offloaded value - */ - vub300->sdio_register[i].prepared = 0; - return 0; - } else { - u8 checksum = 0x00; - u8 rsp0 = 0x00; - u8 rsp1 = 0x00; - u8 rsp2 = vub300->sdio_register[i].response; - u8 rsp3 = vub300->sdio_register[i].regvalue; - vub300->sdio_register[i].prepared = 0; - cmd->resp[1] = checksum << 24; - cmd->resp[0] = (rsp0 << 24) - | (rsp1 << 16) - | (rsp2 << 8) - | (rsp3 << 0); - return 1; - } - } else { - i += 1; - continue; - } - }; - if (vub300->total_offload_count == 0) - return 0; - else if (vub300->fn[func].offload_count == 0) - return 0; - else - return examine_cyclic_buffer(vub300, cmd, func); -} - -static void vub300_mmc_request(struct mmc_host *mmc, struct mmc_request *req) -{ /* NOT irq */ - struct mmc_command *cmd = req->cmd; - struct vub300_mmc_host *vub300 = mmc_priv(mmc); - if (!vub300->interface) { - cmd->error = -ESHUTDOWN; - mmc_request_done(mmc, req); - return; - } else { - struct mmc_data *data = req->data; - if (!vub300->card_powered) { - cmd->error = -ENOMEDIUM; - mmc_request_done(mmc, req); - return; - } - if (!vub300->card_present) { - cmd->error = -ENOMEDIUM; - mmc_request_done(mmc, req); - return; - } - if (vub300->usb_transport_fail) { - cmd->error = vub300->usb_transport_fail; - mmc_request_done(mmc, req); - return; - } - if (!vub300->interface) { - cmd->error = -ENODEV; - mmc_request_done(mmc, req); - return; - } - kref_get(&vub300->kref); - mutex_lock(&vub300->cmd_mutex); - mod_timer(&vub300->inactivity_timer, jiffies + HZ); - /* - * for performance we have to return immediately - * if the requested data has been offloaded - */ - if (cmd->opcode == 52 && - satisfy_request_from_offloaded_data(vub300, cmd)) { - cmd->error = 0; - mutex_unlock(&vub300->cmd_mutex); - kref_put(&vub300->kref, vub300_delete); - mmc_request_done(mmc, req); - return; - } else { - vub300->cmd = cmd; - vub300->req = req; - vub300->data = data; - if (data) - vub300->datasize = data->blksz * data->blocks; - else - vub300->datasize = 0; - vub300_queue_cmnd_work(vub300); - mutex_unlock(&vub300->cmd_mutex); - kref_put(&vub300->kref, vub300_delete); - /* - * the kernel lock diagnostics complain - * if the cmd_mutex * is "passed on" - * to the cmndwork thread, - * so we must release it now - * and re-acquire it in the cmndwork thread - */ - } - } -} - -static void __set_clock_speed(struct vub300_mmc_host *vub300, u8 buf[8], - struct mmc_ios *ios) -{ - int buf_array_size = 8; /* ARRAY_SIZE(buf) does not work !!! */ - int retval; - u32 kHzClock; - if (ios->clock >= 48000000) - kHzClock = 48000; - else if (ios->clock >= 24000000) - kHzClock = 24000; - else if (ios->clock >= 20000000) - kHzClock = 20000; - else if (ios->clock >= 15000000) - kHzClock = 15000; - else if (ios->clock >= 200000) - kHzClock = 200; - else - kHzClock = 0; - { - int i; - u64 c = kHzClock; - for (i = 0; i < buf_array_size; i++) { - buf[i] = c; - c >>= 8; - } - } - retval = - usb_control_msg(vub300->udev, usb_sndctrlpipe(vub300->udev, 0), - SET_CLOCK_SPEED, - USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0x00, 0x00, buf, buf_array_size, HZ); - if (retval != 8) { - dev_err(&vub300->udev->dev, "SET_CLOCK_SPEED" - " %dkHz failed with retval=%d\n", kHzClock, retval); - } else { - dev_dbg(&vub300->udev->dev, "SET_CLOCK_SPEED" - " %dkHz\n", kHzClock); - } -} - -static void vub300_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) -{ /* NOT irq */ - struct vub300_mmc_host *vub300 = mmc_priv(mmc); - if (!vub300->interface) - return; - kref_get(&vub300->kref); - mutex_lock(&vub300->cmd_mutex); - if ((ios->power_mode == MMC_POWER_OFF) && vub300->card_powered) { - vub300->card_powered = 0; - usb_control_msg(vub300->udev, usb_sndctrlpipe(vub300->udev, 0), - SET_SD_POWER, - USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0x0000, 0x0000, NULL, 0, HZ); - /* must wait for the VUB300 u-proc to boot up */ - msleep(600); - } else if ((ios->power_mode == MMC_POWER_UP) && !vub300->card_powered) { - usb_control_msg(vub300->udev, usb_sndctrlpipe(vub300->udev, 0), - SET_SD_POWER, - USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0x0001, 0x0000, NULL, 0, HZ); - msleep(600); - vub300->card_powered = 1; - } else if (ios->power_mode == MMC_POWER_ON) { - u8 *buf = kmalloc(8, GFP_KERNEL); - if (buf) { - __set_clock_speed(vub300, buf, ios); - kfree(buf); - } - } else { - /* this should mean no change of state */ - } - mutex_unlock(&vub300->cmd_mutex); - kref_put(&vub300->kref, vub300_delete); -} - -static int vub300_mmc_get_ro(struct mmc_host *mmc) -{ - struct vub300_mmc_host *vub300 = mmc_priv(mmc); - return vub300->read_only; -} - -static void vub300_enable_sdio_irq(struct mmc_host *mmc, int enable) -{ /* NOT irq */ - struct vub300_mmc_host *vub300 = mmc_priv(mmc); - if (!vub300->interface) - return; - kref_get(&vub300->kref); - if (enable) { - mutex_lock(&vub300->irq_mutex); - if (vub300->irqs_queued) { - vub300->irqs_queued -= 1; - mmc_signal_sdio_irq(vub300->mmc); - } else if (vub300->irq_disabled) { - vub300->irq_disabled = 0; - vub300->irq_enabled = 1; - vub300_queue_poll_work(vub300, 0); - } else if (vub300->irq_enabled) { - /* this should not happen, so we will just ignore it */ - } else { - vub300->irq_enabled = 1; - vub300_queue_poll_work(vub300, 0); - } - mutex_unlock(&vub300->irq_mutex); - } else { - vub300->irq_enabled = 0; - } - kref_put(&vub300->kref, vub300_delete); -} - -void vub300_init_card(struct mmc_host *mmc, struct mmc_card *card) -{ /* NOT irq */ - struct vub300_mmc_host *vub300 = mmc_priv(mmc); - dev_info(&vub300->udev->dev, "NO host QUIRKS for this card\n"); -} - -static struct mmc_host_ops vub300_mmc_ops = { - .request = vub300_mmc_request, - .set_ios = vub300_mmc_set_ios, - .get_ro = vub300_mmc_get_ro, - .enable_sdio_irq = vub300_enable_sdio_irq, - .init_card = vub300_init_card, -}; - -static int vub300_probe(struct usb_interface *interface, - const struct usb_device_id *id) -{ /* NOT irq */ - struct vub300_mmc_host *vub300; - struct usb_host_interface *iface_desc; - struct usb_device *udev = usb_get_dev(interface_to_usbdev(interface)); - int i; - int retval = -ENOMEM; - struct urb *command_out_urb; - struct urb *command_res_urb; - struct mmc_host *mmc; - char manufacturer[48]; - char product[32]; - char serial_number[32]; - usb_string(udev, udev->descriptor.iManufacturer, manufacturer, - sizeof(manufacturer)); - usb_string(udev, udev->descriptor.iProduct, product, sizeof(product)); - usb_string(udev, udev->descriptor.iSerialNumber, serial_number, - sizeof(serial_number)); - dev_info(&udev->dev, "probing VID:PID(%04X:%04X) %s %s %s\n", - udev->descriptor.idVendor, udev->descriptor.idProduct, - manufacturer, product, serial_number); - command_out_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!command_out_urb) { - retval = -ENOMEM; - dev_err(&udev->dev, "not enough memory for command_out_urb\n"); - goto error0; - } - command_res_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!command_res_urb) { - retval = -ENOMEM; - dev_err(&udev->dev, "not enough memory for command_res_urb\n"); - goto error1; - } - /* this also allocates memory for our VUB300 mmc host device */ - mmc = mmc_alloc_host(sizeof(struct vub300_mmc_host), &udev->dev); - if (!mmc) { - retval = -ENOMEM; - dev_err(&udev->dev, "not enough memory for the mmc_host\n"); - goto error4; - } - /* MMC core transfer sizes tunable parameters */ - mmc->caps = 0; - if (!force_1_bit_data_xfers) - mmc->caps |= MMC_CAP_4_BIT_DATA; - if (!force_polling_for_irqs) - mmc->caps |= MMC_CAP_SDIO_IRQ; - mmc->caps &= ~MMC_CAP_NEEDS_POLL; - /* - * MMC_CAP_NEEDS_POLL causes core.c:mmc_rescan() to poll - * for devices which results in spurious CMD7's being - * issued which stops some SDIO cards from working - */ - if (limit_speed_to_24_MHz) { - mmc->caps |= MMC_CAP_MMC_HIGHSPEED; - mmc->caps |= MMC_CAP_SD_HIGHSPEED; - mmc->f_max = 24000000; - dev_info(&udev->dev, "limiting SDIO speed to 24_MHz\n"); - } else { - mmc->caps |= MMC_CAP_MMC_HIGHSPEED; - mmc->caps |= MMC_CAP_SD_HIGHSPEED; - mmc->f_max = 48000000; - } - mmc->f_min = 200000; - mmc->max_blk_count = 511; - mmc->max_blk_size = 512; - mmc->max_segs = 128; - if (force_max_req_size) - mmc->max_req_size = force_max_req_size * 1024; - else - mmc->max_req_size = 64 * 1024; - mmc->max_seg_size = mmc->max_req_size; - mmc->ocr_avail = 0; - mmc->ocr_avail |= MMC_VDD_165_195; - mmc->ocr_avail |= MMC_VDD_20_21; - mmc->ocr_avail |= MMC_VDD_21_22; - mmc->ocr_avail |= MMC_VDD_22_23; - mmc->ocr_avail |= MMC_VDD_23_24; - mmc->ocr_avail |= MMC_VDD_24_25; - mmc->ocr_avail |= MMC_VDD_25_26; - mmc->ocr_avail |= MMC_VDD_26_27; - mmc->ocr_avail |= MMC_VDD_27_28; - mmc->ocr_avail |= MMC_VDD_28_29; - mmc->ocr_avail |= MMC_VDD_29_30; - mmc->ocr_avail |= MMC_VDD_30_31; - mmc->ocr_avail |= MMC_VDD_31_32; - mmc->ocr_avail |= MMC_VDD_32_33; - mmc->ocr_avail |= MMC_VDD_33_34; - mmc->ocr_avail |= MMC_VDD_34_35; - mmc->ocr_avail |= MMC_VDD_35_36; - mmc->ops = &vub300_mmc_ops; - vub300 = mmc_priv(mmc); - vub300->mmc = mmc; - vub300->card_powered = 0; - vub300->bus_width = 0; - vub300->cmnd.head.block_size[0] = 0x00; - vub300->cmnd.head.block_size[1] = 0x00; - vub300->app_spec = 0; - mutex_init(&vub300->cmd_mutex); - mutex_init(&vub300->irq_mutex); - vub300->command_out_urb = command_out_urb; - vub300->command_res_urb = command_res_urb; - vub300->usb_timed_out = 0; - vub300->dynamic_register_count = 0; - - for (i = 0; i < ARRAY_SIZE(vub300->fn); i++) { - vub300->fn[i].offload_point = 0; - vub300->fn[i].offload_count = 0; - } - - vub300->total_offload_count = 0; - vub300->irq_enabled = 0; - vub300->irq_disabled = 0; - vub300->irqs_queued = 0; - - for (i = 0; i < ARRAY_SIZE(vub300->sdio_register); i++) - vub300->sdio_register[i++].activate = 0; - - vub300->udev = udev; - vub300->interface = interface; - vub300->cmnd_res_ep = 0; - vub300->cmnd_out_ep = 0; - vub300->data_inp_ep = 0; - vub300->data_out_ep = 0; - - for (i = 0; i < ARRAY_SIZE(vub300->fbs); i++) - vub300->fbs[i] = 512; - - /* - * set up the endpoint information - * - * use the first pair of bulk-in and bulk-out - * endpoints for Command/Response+Interrupt - * - * use the second pair of bulk-in and bulk-out - * endpoints for Data In/Out - */ - vub300->large_usb_packets = 0; - iface_desc = interface->cur_altsetting; - for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { - struct usb_endpoint_descriptor *endpoint = - &iface_desc->endpoint[i].desc; - dev_info(&vub300->udev->dev, - "vub300 testing %s EndPoint(%d) %02X\n", - usb_endpoint_is_bulk_in(endpoint) ? "BULK IN" : - usb_endpoint_is_bulk_out(endpoint) ? "BULK OUT" : - "UNKNOWN", i, endpoint->bEndpointAddress); - if (endpoint->wMaxPacketSize > 64) - vub300->large_usb_packets = 1; - if (usb_endpoint_is_bulk_in(endpoint)) { - if (!vub300->cmnd_res_ep) { - vub300->cmnd_res_ep = - endpoint->bEndpointAddress; - } else if (!vub300->data_inp_ep) { - vub300->data_inp_ep = - endpoint->bEndpointAddress; - } else { - dev_warn(&vub300->udev->dev, - "ignoring" - " unexpected bulk_in endpoint"); - } - } else if (usb_endpoint_is_bulk_out(endpoint)) { - if (!vub300->cmnd_out_ep) { - vub300->cmnd_out_ep = - endpoint->bEndpointAddress; - } else if (!vub300->data_out_ep) { - vub300->data_out_ep = - endpoint->bEndpointAddress; - } else { - dev_warn(&vub300->udev->dev, - "ignoring" - " unexpected bulk_out endpoint"); - } - } else { - dev_warn(&vub300->udev->dev, - "vub300 ignoring EndPoint(%d) %02X", i, - endpoint->bEndpointAddress); - } - } - if (vub300->cmnd_res_ep && vub300->cmnd_out_ep && - vub300->data_inp_ep && vub300->data_out_ep) { - dev_info(&vub300->udev->dev, - "vub300 %s packets" - " using EndPoints %02X %02X %02X %02X\n", - vub300->large_usb_packets ? "LARGE" : "SMALL", - vub300->cmnd_out_ep, vub300->cmnd_res_ep, - vub300->data_out_ep, vub300->data_inp_ep); - /* we have the expected EndPoints */ - } else { - dev_err(&vub300->udev->dev, - "Could not find two sets of bulk-in/out endpoint pairs\n"); - retval = -EINVAL; - goto error5; - } - retval = - usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0), - GET_HC_INF0, - USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0x0000, 0x0000, &vub300->hc_info, - sizeof(vub300->hc_info), HZ); - if (retval < 0) - goto error5; - retval = - usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0), - SET_ROM_WAIT_STATES, - USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - firmware_rom_wait_states, 0x0000, NULL, 0, HZ); - if (retval < 0) - goto error5; - dev_info(&vub300->udev->dev, - "operating_mode = %s %s %d MHz %s %d byte USB packets\n", - (mmc->caps & MMC_CAP_SDIO_IRQ) ? "IRQs" : "POLL", - (mmc->caps & MMC_CAP_4_BIT_DATA) ? "4-bit" : "1-bit", - mmc->f_max / 1000000, - pad_input_to_usb_pkt ? "padding input data to" : "with", - vub300->large_usb_packets ? 512 : 64); - retval = - usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0), - GET_SYSTEM_PORT_STATUS, - USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0x0000, 0x0000, &vub300->system_port_status, - sizeof(vub300->system_port_status), HZ); - if (retval < 0) { - goto error4; - } else if (sizeof(vub300->system_port_status) == retval) { - vub300->card_present = - (0x0001 & vub300->system_port_status.port_flags) ? 1 : 0; - vub300->read_only = - (0x0010 & vub300->system_port_status.port_flags) ? 1 : 0; - } else { - goto error4; - } - usb_set_intfdata(interface, vub300); - INIT_DELAYED_WORK(&vub300->pollwork, vub300_pollwork_thread); - INIT_WORK(&vub300->cmndwork, vub300_cmndwork_thread); - INIT_WORK(&vub300->deadwork, vub300_deadwork_thread); - kref_init(&vub300->kref); - init_timer(&vub300->sg_transfer_timer); - vub300->sg_transfer_timer.data = (unsigned long)vub300; - vub300->sg_transfer_timer.function = vub300_sg_timed_out; - kref_get(&vub300->kref); - init_timer(&vub300->inactivity_timer); - vub300->inactivity_timer.data = (unsigned long)vub300; - vub300->inactivity_timer.function = vub300_inactivity_timer_expired; - vub300->inactivity_timer.expires = jiffies + HZ; - add_timer(&vub300->inactivity_timer); - if (vub300->card_present) - dev_info(&vub300->udev->dev, - "USB vub300 remote SDIO host controller[%d]" - "connected with SD/SDIO card inserted\n", - interface_to_InterfaceNumber(interface)); - else - dev_info(&vub300->udev->dev, - "USB vub300 remote SDIO host controller[%d]" - "connected with no SD/SDIO card inserted\n", - interface_to_InterfaceNumber(interface)); - mmc_add_host(mmc); - return 0; -error5: - mmc_free_host(mmc); - /* - * and hence also frees vub300 - * which is contained at the end of struct mmc - */ -error4: - usb_free_urb(command_out_urb); -error1: - usb_free_urb(command_res_urb); -error0: - return retval; -} - -static void vub300_disconnect(struct usb_interface *interface) -{ /* NOT irq */ - struct vub300_mmc_host *vub300 = usb_get_intfdata(interface); - if (!vub300 || !vub300->mmc) { - return; - } else { - struct mmc_host *mmc = vub300->mmc; - if (!vub300->mmc) { - return; - } else { - int ifnum = interface_to_InterfaceNumber(interface); - usb_set_intfdata(interface, NULL); - /* prevent more I/O from starting */ - vub300->interface = NULL; - kref_put(&vub300->kref, vub300_delete); - mmc_remove_host(mmc); - pr_info("USB vub300 remote SDIO host controller[%d]" - " now disconnected", ifnum); - return; - } - } -} - -#ifdef CONFIG_PM -static int vub300_suspend(struct usb_interface *intf, pm_message_t message) -{ - struct vub300_mmc_host *vub300 = usb_get_intfdata(intf); - if (!vub300 || !vub300->mmc) { - return 0; - } else { - struct mmc_host *mmc = vub300->mmc; - mmc_suspend_host(mmc); - return 0; - } -} - -static int vub300_resume(struct usb_interface *intf) -{ - struct vub300_mmc_host *vub300 = usb_get_intfdata(intf); - if (!vub300 || !vub300->mmc) { - return 0; - } else { - struct mmc_host *mmc = vub300->mmc; - mmc_resume_host(mmc); - return 0; - } -} -#else -#define vub300_suspend NULL -#define vub300_resume NULL -#endif -static int vub300_pre_reset(struct usb_interface *intf) -{ /* NOT irq */ - struct vub300_mmc_host *vub300 = usb_get_intfdata(intf); - mutex_lock(&vub300->cmd_mutex); - return 0; -} - -static int vub300_post_reset(struct usb_interface *intf) -{ /* NOT irq */ - struct vub300_mmc_host *vub300 = usb_get_intfdata(intf); - /* we are sure no URBs are active - no locking needed */ - vub300->errors = -EPIPE; - mutex_unlock(&vub300->cmd_mutex); - return 0; -} - -static struct usb_driver vub300_driver = { - .name = "vub300", - .probe = vub300_probe, - .disconnect = vub300_disconnect, - .suspend = vub300_suspend, - .resume = vub300_resume, - .pre_reset = vub300_pre_reset, - .post_reset = vub300_post_reset, - .id_table = vub300_table, - .supports_autosuspend = 1, -}; - -static int __init vub300_init(void) -{ /* NOT irq */ - int result; - - pr_info("VUB300 Driver rom wait states = %02X irqpoll timeout = %04X", - firmware_rom_wait_states, 0x0FFFF & firmware_irqpoll_timeout); - cmndworkqueue = create_singlethread_workqueue("kvub300c"); - if (!cmndworkqueue) { - pr_err("not enough memory for the REQUEST workqueue"); - result = -ENOMEM; - goto out1; - } - pollworkqueue = create_singlethread_workqueue("kvub300p"); - if (!pollworkqueue) { - pr_err("not enough memory for the IRQPOLL workqueue"); - result = -ENOMEM; - goto out2; - } - deadworkqueue = create_singlethread_workqueue("kvub300d"); - if (!deadworkqueue) { - pr_err("not enough memory for the EXPIRED workqueue"); - result = -ENOMEM; - goto out3; - } - result = usb_register(&vub300_driver); - if (result) { - pr_err("usb_register failed. Error number %d", result); - goto out4; - } - return 0; -out4: - destroy_workqueue(deadworkqueue); -out3: - destroy_workqueue(pollworkqueue); -out2: - destroy_workqueue(cmndworkqueue); -out1: - return result; -} - -static void __exit vub300_exit(void) -{ - usb_deregister(&vub300_driver); - flush_workqueue(cmndworkqueue); - flush_workqueue(pollworkqueue); - flush_workqueue(deadworkqueue); - destroy_workqueue(cmndworkqueue); - destroy_workqueue(pollworkqueue); - destroy_workqueue(deadworkqueue); -} - -module_init(vub300_init); -module_exit(vub300_exit); - -MODULE_AUTHOR("Tony Olech <tony.olech@elandigitalsystems.com>"); -MODULE_DESCRIPTION("VUB300 USB to SD/MMC/SDIO adapter driver"); -MODULE_LICENSE("GPL"); |