Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Remote VUB300 SDIO/SDmem Host Controller Driver |
| 3 | * |
| 4 | * Copyright (C) 2010 Elan Digital Systems Limited |
| 5 | * |
| 6 | * based on USB Skeleton driver - 2.2 |
| 7 | * |
| 8 | * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com) |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or |
| 11 | * modify it under the terms of the GNU General Public License as |
| 12 | * published by the Free Software Foundation, version 2 |
| 13 | * |
| 14 | * VUB300: is a USB 2.0 client device with a single SDIO/SDmem/MMC slot |
| 15 | * Any SDIO/SDmem/MMC device plugged into the VUB300 will appear, |
| 16 | * by virtue of this driver, to have been plugged into a local |
| 17 | * SDIO host controller, similar to, say, a PCI Ricoh controller |
| 18 | * This is because this kernel device driver is both a USB 2.0 |
| 19 | * client device driver AND an MMC host controller driver. Thus |
| 20 | * if there is an existing driver for the inserted SDIO/SDmem/MMC |
| 21 | * device then that driver will be used by the kernel to manage |
| 22 | * the device in exactly the same fashion as if it had been |
| 23 | * directly plugged into, say, a local pci bus Ricoh controller |
| 24 | * |
| 25 | * RANT: this driver was written using a display 128x48 - converting it |
| 26 | * to a line width of 80 makes it very difficult to support. In |
| 27 | * particular functions have been broken down into sub functions |
| 28 | * and the original meaningful names have been shortened into |
| 29 | * cryptic ones. |
| 30 | * The problem is that executing a fragment of code subject to |
| 31 | * two conditions means an indentation of 24, thus leaving only |
| 32 | * 56 characters for a C statement. And that is quite ridiculous! |
| 33 | * |
| 34 | * Data types: data passed to/from the VUB300 is fixed to a number of |
| 35 | * bits and driver data fields reflect that limit by using |
| 36 | * u8, u16, u32 |
| 37 | */ |
| 38 | #include <linux/kernel.h> |
| 39 | #include <linux/errno.h> |
| 40 | #include <linux/init.h> |
| 41 | #include <linux/slab.h> |
| 42 | #include <linux/module.h> |
| 43 | #include <linux/kref.h> |
| 44 | #include <linux/uaccess.h> |
| 45 | #include <linux/usb.h> |
| 46 | #include <linux/mutex.h> |
| 47 | #include <linux/mmc/host.h> |
| 48 | #include <linux/mmc/card.h> |
| 49 | #include <linux/mmc/sdio_func.h> |
| 50 | #include <linux/mmc/sdio_ids.h> |
| 51 | #include <linux/workqueue.h> |
| 52 | #include <linux/ctype.h> |
| 53 | #include <linux/firmware.h> |
| 54 | #include <linux/scatterlist.h> |
| 55 | |
| 56 | struct host_controller_info { |
| 57 | u8 info_size; |
| 58 | u16 firmware_version; |
| 59 | u8 number_of_ports; |
| 60 | } __packed; |
| 61 | |
| 62 | #define FIRMWARE_BLOCK_BOUNDARY 1024 |
| 63 | struct sd_command_header { |
| 64 | u8 header_size; |
| 65 | u8 header_type; |
| 66 | u8 port_number; |
| 67 | u8 command_type; /* Bit7 - Rd/Wr */ |
| 68 | u8 command_index; |
| 69 | u8 transfer_size[4]; /* ReadSize + ReadSize */ |
| 70 | u8 response_type; |
| 71 | u8 arguments[4]; |
| 72 | u8 block_count[2]; |
| 73 | u8 block_size[2]; |
| 74 | u8 block_boundary[2]; |
| 75 | u8 reserved[44]; /* to pad out to 64 bytes */ |
| 76 | } __packed; |
| 77 | |
| 78 | struct sd_irqpoll_header { |
| 79 | u8 header_size; |
| 80 | u8 header_type; |
| 81 | u8 port_number; |
| 82 | u8 command_type; /* Bit7 - Rd/Wr */ |
| 83 | u8 padding[16]; /* don't ask why !! */ |
| 84 | u8 poll_timeout_msb; |
| 85 | u8 poll_timeout_lsb; |
| 86 | u8 reserved[42]; /* to pad out to 64 bytes */ |
| 87 | } __packed; |
| 88 | |
| 89 | struct sd_common_header { |
| 90 | u8 header_size; |
| 91 | u8 header_type; |
| 92 | u8 port_number; |
| 93 | } __packed; |
| 94 | |
| 95 | struct sd_response_header { |
| 96 | u8 header_size; |
| 97 | u8 header_type; |
| 98 | u8 port_number; |
| 99 | u8 command_type; |
| 100 | u8 command_index; |
| 101 | u8 command_response[0]; |
| 102 | } __packed; |
| 103 | |
| 104 | struct sd_status_header { |
| 105 | u8 header_size; |
| 106 | u8 header_type; |
| 107 | u8 port_number; |
| 108 | u16 port_flags; |
| 109 | u32 sdio_clock; |
| 110 | u16 host_header_size; |
| 111 | u16 func_header_size; |
| 112 | u16 ctrl_header_size; |
| 113 | } __packed; |
| 114 | |
| 115 | struct sd_error_header { |
| 116 | u8 header_size; |
| 117 | u8 header_type; |
| 118 | u8 port_number; |
| 119 | u8 error_code; |
| 120 | } __packed; |
| 121 | |
| 122 | struct sd_interrupt_header { |
| 123 | u8 header_size; |
| 124 | u8 header_type; |
| 125 | u8 port_number; |
| 126 | } __packed; |
| 127 | |
| 128 | struct offload_registers_access { |
| 129 | u8 command_byte[4]; |
| 130 | u8 Respond_Byte[4]; |
| 131 | } __packed; |
| 132 | |
| 133 | #define INTERRUPT_REGISTER_ACCESSES 15 |
| 134 | struct sd_offloaded_interrupt { |
| 135 | u8 header_size; |
| 136 | u8 header_type; |
| 137 | u8 port_number; |
| 138 | struct offload_registers_access reg[INTERRUPT_REGISTER_ACCESSES]; |
| 139 | } __packed; |
| 140 | |
| 141 | struct sd_register_header { |
| 142 | u8 header_size; |
| 143 | u8 header_type; |
| 144 | u8 port_number; |
| 145 | u8 command_type; |
| 146 | u8 command_index; |
| 147 | u8 command_response[6]; |
| 148 | } __packed; |
| 149 | |
| 150 | #define PIGGYBACK_REGISTER_ACCESSES 14 |
| 151 | struct sd_offloaded_piggyback { |
| 152 | struct sd_register_header sdio; |
| 153 | struct offload_registers_access reg[PIGGYBACK_REGISTER_ACCESSES]; |
| 154 | } __packed; |
| 155 | |
| 156 | union sd_response { |
| 157 | struct sd_common_header common; |
| 158 | struct sd_status_header status; |
| 159 | struct sd_error_header error; |
| 160 | struct sd_interrupt_header interrupt; |
| 161 | struct sd_response_header response; |
| 162 | struct sd_offloaded_interrupt irq; |
| 163 | struct sd_offloaded_piggyback pig; |
| 164 | } __packed; |
| 165 | |
| 166 | union sd_command { |
| 167 | struct sd_command_header head; |
| 168 | struct sd_irqpoll_header poll; |
| 169 | } __packed; |
| 170 | |
| 171 | enum SD_RESPONSE_TYPE { |
| 172 | SDRT_UNSPECIFIED = 0, |
| 173 | SDRT_NONE, |
| 174 | SDRT_1, |
| 175 | SDRT_1B, |
| 176 | SDRT_2, |
| 177 | SDRT_3, |
| 178 | SDRT_4, |
| 179 | SDRT_5, |
| 180 | SDRT_5B, |
| 181 | SDRT_6, |
| 182 | SDRT_7, |
| 183 | }; |
| 184 | |
| 185 | #define RESPONSE_INTERRUPT 0x01 |
| 186 | #define RESPONSE_ERROR 0x02 |
| 187 | #define RESPONSE_STATUS 0x03 |
| 188 | #define RESPONSE_IRQ_DISABLED 0x05 |
| 189 | #define RESPONSE_IRQ_ENABLED 0x06 |
| 190 | #define RESPONSE_PIGGYBACKED 0x07 |
| 191 | #define RESPONSE_NO_INTERRUPT 0x08 |
| 192 | #define RESPONSE_PIG_DISABLED 0x09 |
| 193 | #define RESPONSE_PIG_ENABLED 0x0A |
| 194 | #define SD_ERROR_1BIT_TIMEOUT 0x01 |
| 195 | #define SD_ERROR_4BIT_TIMEOUT 0x02 |
| 196 | #define SD_ERROR_1BIT_CRC_WRONG 0x03 |
| 197 | #define SD_ERROR_4BIT_CRC_WRONG 0x04 |
| 198 | #define SD_ERROR_1BIT_CRC_ERROR 0x05 |
| 199 | #define SD_ERROR_4BIT_CRC_ERROR 0x06 |
| 200 | #define SD_ERROR_NO_CMD_ENDBIT 0x07 |
| 201 | #define SD_ERROR_NO_1BIT_DATEND 0x08 |
| 202 | #define SD_ERROR_NO_4BIT_DATEND 0x09 |
| 203 | #define SD_ERROR_1BIT_UNEXPECTED_TIMEOUT 0x0A |
| 204 | #define SD_ERROR_4BIT_UNEXPECTED_TIMEOUT 0x0B |
| 205 | #define SD_ERROR_ILLEGAL_COMMAND 0x0C |
| 206 | #define SD_ERROR_NO_DEVICE 0x0D |
| 207 | #define SD_ERROR_TRANSFER_LENGTH 0x0E |
| 208 | #define SD_ERROR_1BIT_DATA_TIMEOUT 0x0F |
| 209 | #define SD_ERROR_4BIT_DATA_TIMEOUT 0x10 |
| 210 | #define SD_ERROR_ILLEGAL_STATE 0x11 |
| 211 | #define SD_ERROR_UNKNOWN_ERROR 0x12 |
| 212 | #define SD_ERROR_RESERVED_ERROR 0x13 |
| 213 | #define SD_ERROR_INVALID_FUNCTION 0x14 |
| 214 | #define SD_ERROR_OUT_OF_RANGE 0x15 |
| 215 | #define SD_ERROR_STAT_CMD 0x16 |
| 216 | #define SD_ERROR_STAT_DATA 0x17 |
| 217 | #define SD_ERROR_STAT_CMD_TIMEOUT 0x18 |
| 218 | #define SD_ERROR_SDCRDY_STUCK 0x19 |
| 219 | #define SD_ERROR_UNHANDLED 0x1A |
| 220 | #define SD_ERROR_OVERRUN 0x1B |
| 221 | #define SD_ERROR_PIO_TIMEOUT 0x1C |
| 222 | |
| 223 | #define FUN(c) (0x000007 & (c->arg>>28)) |
| 224 | #define REG(c) (0x01FFFF & (c->arg>>9)) |
| 225 | |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 226 | static bool limit_speed_to_24_MHz; |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 227 | module_param(limit_speed_to_24_MHz, bool, 0644); |
| 228 | MODULE_PARM_DESC(limit_speed_to_24_MHz, "Limit Max SDIO Clock Speed to 24 MHz"); |
| 229 | |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 230 | static bool pad_input_to_usb_pkt; |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 231 | module_param(pad_input_to_usb_pkt, bool, 0644); |
| 232 | MODULE_PARM_DESC(pad_input_to_usb_pkt, |
| 233 | "Pad USB data input transfers to whole USB Packet"); |
| 234 | |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 235 | static bool disable_offload_processing; |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 236 | module_param(disable_offload_processing, bool, 0644); |
| 237 | MODULE_PARM_DESC(disable_offload_processing, "Disable Offload Processing"); |
| 238 | |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 239 | static bool force_1_bit_data_xfers; |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 240 | module_param(force_1_bit_data_xfers, bool, 0644); |
| 241 | MODULE_PARM_DESC(force_1_bit_data_xfers, |
| 242 | "Force SDIO Data Transfers to 1-bit Mode"); |
| 243 | |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 244 | static bool force_polling_for_irqs; |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 245 | module_param(force_polling_for_irqs, bool, 0644); |
| 246 | MODULE_PARM_DESC(force_polling_for_irqs, "Force Polling for SDIO interrupts"); |
| 247 | |
| 248 | static int firmware_irqpoll_timeout = 1024; |
| 249 | module_param(firmware_irqpoll_timeout, int, 0644); |
| 250 | MODULE_PARM_DESC(firmware_irqpoll_timeout, "VUB300 firmware irqpoll timeout"); |
| 251 | |
| 252 | static int force_max_req_size = 128; |
| 253 | module_param(force_max_req_size, int, 0644); |
| 254 | MODULE_PARM_DESC(force_max_req_size, "set max request size in kBytes"); |
| 255 | |
| 256 | #ifdef SMSC_DEVELOPMENT_BOARD |
| 257 | static int firmware_rom_wait_states = 0x04; |
| 258 | #else |
| 259 | static int firmware_rom_wait_states = 0x1C; |
| 260 | #endif |
| 261 | |
Rusty Russell | 6107428 | 2011-12-15 13:34:50 +1030 | [diff] [blame] | 262 | module_param(firmware_rom_wait_states, int, 0644); |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 263 | MODULE_PARM_DESC(firmware_rom_wait_states, |
| 264 | "ROM wait states byte=RRRIIEEE (Reserved Internal External)"); |
| 265 | |
| 266 | #define ELAN_VENDOR_ID 0x2201 |
| 267 | #define VUB300_VENDOR_ID 0x0424 |
| 268 | #define VUB300_PRODUCT_ID 0x012C |
| 269 | static struct usb_device_id vub300_table[] = { |
| 270 | {USB_DEVICE(ELAN_VENDOR_ID, VUB300_PRODUCT_ID)}, |
| 271 | {USB_DEVICE(VUB300_VENDOR_ID, VUB300_PRODUCT_ID)}, |
| 272 | {} /* Terminating entry */ |
| 273 | }; |
| 274 | MODULE_DEVICE_TABLE(usb, vub300_table); |
| 275 | |
| 276 | static struct workqueue_struct *cmndworkqueue; |
| 277 | static struct workqueue_struct *pollworkqueue; |
| 278 | static struct workqueue_struct *deadworkqueue; |
| 279 | |
| 280 | static inline int interface_to_InterfaceNumber(struct usb_interface *interface) |
| 281 | { |
| 282 | if (!interface) |
| 283 | return -1; |
| 284 | if (!interface->cur_altsetting) |
| 285 | return -1; |
| 286 | return interface->cur_altsetting->desc.bInterfaceNumber; |
| 287 | } |
| 288 | |
| 289 | struct sdio_register { |
| 290 | unsigned func_num:3; |
| 291 | unsigned sdio_reg:17; |
| 292 | unsigned activate:1; |
| 293 | unsigned prepared:1; |
| 294 | unsigned regvalue:8; |
| 295 | unsigned response:8; |
| 296 | unsigned sparebit:26; |
| 297 | }; |
| 298 | |
| 299 | struct vub300_mmc_host { |
| 300 | struct usb_device *udev; |
| 301 | struct usb_interface *interface; |
| 302 | struct kref kref; |
| 303 | struct mutex cmd_mutex; |
| 304 | struct mutex irq_mutex; |
| 305 | char vub_name[3 + (9 * 8) + 4 + 1]; /* max of 7 sdio fn's */ |
| 306 | u8 cmnd_out_ep; /* EndPoint for commands */ |
| 307 | u8 cmnd_res_ep; /* EndPoint for responses */ |
| 308 | u8 data_out_ep; /* EndPoint for out data */ |
| 309 | u8 data_inp_ep; /* EndPoint for inp data */ |
| 310 | bool card_powered; |
| 311 | bool card_present; |
| 312 | bool read_only; |
| 313 | bool large_usb_packets; |
| 314 | bool app_spec; /* ApplicationSpecific */ |
| 315 | bool irq_enabled; /* by the MMC CORE */ |
| 316 | bool irq_disabled; /* in the firmware */ |
| 317 | unsigned bus_width:4; |
| 318 | u8 total_offload_count; |
| 319 | u8 dynamic_register_count; |
| 320 | u8 resp_len; |
| 321 | u32 datasize; |
| 322 | int errors; |
| 323 | int usb_transport_fail; |
| 324 | int usb_timed_out; |
| 325 | int irqs_queued; |
| 326 | struct sdio_register sdio_register[16]; |
| 327 | struct offload_interrupt_function_register { |
| 328 | #define MAXREGBITS 4 |
| 329 | #define MAXREGS (1<<MAXREGBITS) |
| 330 | #define MAXREGMASK (MAXREGS-1) |
| 331 | u8 offload_count; |
| 332 | u32 offload_point; |
| 333 | struct offload_registers_access reg[MAXREGS]; |
| 334 | } fn[8]; |
| 335 | u16 fbs[8]; /* Function Block Size */ |
| 336 | struct mmc_command *cmd; |
| 337 | struct mmc_request *req; |
| 338 | struct mmc_data *data; |
| 339 | struct mmc_host *mmc; |
| 340 | struct urb *urb; |
| 341 | struct urb *command_out_urb; |
| 342 | struct urb *command_res_urb; |
| 343 | struct completion command_complete; |
| 344 | struct completion irqpoll_complete; |
| 345 | union sd_command cmnd; |
| 346 | union sd_response resp; |
| 347 | struct timer_list sg_transfer_timer; |
| 348 | struct usb_sg_request sg_request; |
| 349 | struct timer_list inactivity_timer; |
| 350 | struct work_struct deadwork; |
| 351 | struct work_struct cmndwork; |
| 352 | struct delayed_work pollwork; |
| 353 | struct host_controller_info hc_info; |
| 354 | struct sd_status_header system_port_status; |
| 355 | u8 padded_buffer[64]; |
| 356 | }; |
| 357 | |
| 358 | #define kref_to_vub300_mmc_host(d) container_of(d, struct vub300_mmc_host, kref) |
| 359 | #define SET_TRANSFER_PSEUDOCODE 21 |
| 360 | #define SET_INTERRUPT_PSEUDOCODE 20 |
| 361 | #define SET_FAILURE_MODE 18 |
| 362 | #define SET_ROM_WAIT_STATES 16 |
| 363 | #define SET_IRQ_ENABLE 13 |
| 364 | #define SET_CLOCK_SPEED 11 |
| 365 | #define SET_FUNCTION_BLOCK_SIZE 9 |
| 366 | #define SET_SD_DATA_MODE 6 |
| 367 | #define SET_SD_POWER 4 |
| 368 | #define ENTER_DFU_MODE 3 |
| 369 | #define GET_HC_INF0 1 |
| 370 | #define GET_SYSTEM_PORT_STATUS 0 |
| 371 | |
| 372 | static void vub300_delete(struct kref *kref) |
| 373 | { /* kref callback - softirq */ |
| 374 | struct vub300_mmc_host *vub300 = kref_to_vub300_mmc_host(kref); |
| 375 | struct mmc_host *mmc = vub300->mmc; |
| 376 | usb_free_urb(vub300->command_out_urb); |
| 377 | vub300->command_out_urb = NULL; |
| 378 | usb_free_urb(vub300->command_res_urb); |
| 379 | vub300->command_res_urb = NULL; |
| 380 | usb_put_dev(vub300->udev); |
| 381 | mmc_free_host(mmc); |
| 382 | /* |
| 383 | * and hence also frees vub300 |
| 384 | * which is contained at the end of struct mmc |
| 385 | */ |
| 386 | } |
| 387 | |
| 388 | static void vub300_queue_cmnd_work(struct vub300_mmc_host *vub300) |
| 389 | { |
| 390 | kref_get(&vub300->kref); |
| 391 | if (queue_work(cmndworkqueue, &vub300->cmndwork)) { |
| 392 | /* |
| 393 | * then the cmndworkqueue was not previously |
| 394 | * running and the above get ref is obvious |
| 395 | * required and will be put when the thread |
| 396 | * terminates by a specific call |
| 397 | */ |
| 398 | } else { |
| 399 | /* |
| 400 | * the cmndworkqueue was already running from |
| 401 | * a previous invocation and thus to keep the |
| 402 | * kref counts correct we must undo the get |
| 403 | */ |
| 404 | kref_put(&vub300->kref, vub300_delete); |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | static void vub300_queue_poll_work(struct vub300_mmc_host *vub300, int delay) |
| 409 | { |
| 410 | kref_get(&vub300->kref); |
| 411 | if (queue_delayed_work(pollworkqueue, &vub300->pollwork, delay)) { |
| 412 | /* |
| 413 | * then the pollworkqueue was not previously |
| 414 | * running and the above get ref is obvious |
| 415 | * required and will be put when the thread |
| 416 | * terminates by a specific call |
| 417 | */ |
| 418 | } else { |
| 419 | /* |
| 420 | * the pollworkqueue was already running from |
| 421 | * a previous invocation and thus to keep the |
| 422 | * kref counts correct we must undo the get |
| 423 | */ |
| 424 | kref_put(&vub300->kref, vub300_delete); |
| 425 | } |
| 426 | } |
| 427 | |
| 428 | static void vub300_queue_dead_work(struct vub300_mmc_host *vub300) |
| 429 | { |
| 430 | kref_get(&vub300->kref); |
| 431 | if (queue_work(deadworkqueue, &vub300->deadwork)) { |
| 432 | /* |
| 433 | * then the deadworkqueue was not previously |
| 434 | * running and the above get ref is obvious |
| 435 | * required and will be put when the thread |
| 436 | * terminates by a specific call |
| 437 | */ |
| 438 | } else { |
| 439 | /* |
| 440 | * the deadworkqueue was already running from |
| 441 | * a previous invocation and thus to keep the |
| 442 | * kref counts correct we must undo the get |
| 443 | */ |
| 444 | kref_put(&vub300->kref, vub300_delete); |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | static void irqpoll_res_completed(struct urb *urb) |
| 449 | { /* urb completion handler - hardirq */ |
| 450 | struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context; |
| 451 | if (urb->status) |
| 452 | vub300->usb_transport_fail = urb->status; |
| 453 | complete(&vub300->irqpoll_complete); |
| 454 | } |
| 455 | |
| 456 | static void irqpoll_out_completed(struct urb *urb) |
| 457 | { /* urb completion handler - hardirq */ |
| 458 | struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context; |
| 459 | if (urb->status) { |
| 460 | vub300->usb_transport_fail = urb->status; |
| 461 | complete(&vub300->irqpoll_complete); |
| 462 | return; |
| 463 | } else { |
| 464 | int ret; |
| 465 | unsigned int pipe = |
| 466 | usb_rcvbulkpipe(vub300->udev, vub300->cmnd_res_ep); |
| 467 | usb_fill_bulk_urb(vub300->command_res_urb, vub300->udev, pipe, |
| 468 | &vub300->resp, sizeof(vub300->resp), |
| 469 | irqpoll_res_completed, vub300); |
| 470 | vub300->command_res_urb->actual_length = 0; |
| 471 | ret = usb_submit_urb(vub300->command_res_urb, GFP_ATOMIC); |
| 472 | if (ret) { |
| 473 | vub300->usb_transport_fail = ret; |
| 474 | complete(&vub300->irqpoll_complete); |
| 475 | } |
| 476 | return; |
| 477 | } |
| 478 | } |
| 479 | |
| 480 | static void send_irqpoll(struct vub300_mmc_host *vub300) |
| 481 | { |
| 482 | /* cmd_mutex is held by vub300_pollwork_thread */ |
| 483 | int retval; |
| 484 | int timeout = 0xFFFF & (0x0001FFFF - firmware_irqpoll_timeout); |
| 485 | vub300->cmnd.poll.header_size = 22; |
| 486 | vub300->cmnd.poll.header_type = 1; |
| 487 | vub300->cmnd.poll.port_number = 0; |
| 488 | vub300->cmnd.poll.command_type = 2; |
| 489 | vub300->cmnd.poll.poll_timeout_lsb = 0xFF & (unsigned)timeout; |
| 490 | vub300->cmnd.poll.poll_timeout_msb = 0xFF & (unsigned)(timeout >> 8); |
| 491 | usb_fill_bulk_urb(vub300->command_out_urb, vub300->udev, |
| 492 | usb_sndbulkpipe(vub300->udev, vub300->cmnd_out_ep) |
| 493 | , &vub300->cmnd, sizeof(vub300->cmnd) |
| 494 | , irqpoll_out_completed, vub300); |
| 495 | retval = usb_submit_urb(vub300->command_out_urb, GFP_KERNEL); |
| 496 | if (0 > retval) { |
| 497 | vub300->usb_transport_fail = retval; |
| 498 | vub300_queue_poll_work(vub300, 1); |
| 499 | complete(&vub300->irqpoll_complete); |
| 500 | return; |
| 501 | } else { |
| 502 | return; |
| 503 | } |
| 504 | } |
| 505 | |
| 506 | static void new_system_port_status(struct vub300_mmc_host *vub300) |
| 507 | { |
| 508 | int old_card_present = vub300->card_present; |
| 509 | int new_card_present = |
| 510 | (0x0001 & vub300->system_port_status.port_flags) ? 1 : 0; |
| 511 | vub300->read_only = |
| 512 | (0x0010 & vub300->system_port_status.port_flags) ? 1 : 0; |
| 513 | if (new_card_present && !old_card_present) { |
| 514 | dev_info(&vub300->udev->dev, "card just inserted\n"); |
| 515 | vub300->card_present = 1; |
| 516 | vub300->bus_width = 0; |
| 517 | if (disable_offload_processing) |
| 518 | strncpy(vub300->vub_name, "EMPTY Processing Disabled", |
| 519 | sizeof(vub300->vub_name)); |
| 520 | else |
| 521 | vub300->vub_name[0] = 0; |
| 522 | mmc_detect_change(vub300->mmc, 1); |
| 523 | } else if (!new_card_present && old_card_present) { |
| 524 | dev_info(&vub300->udev->dev, "card just ejected\n"); |
| 525 | vub300->card_present = 0; |
| 526 | mmc_detect_change(vub300->mmc, 0); |
| 527 | } else { |
| 528 | /* no change */ |
| 529 | } |
| 530 | } |
| 531 | |
| 532 | static void __add_offloaded_reg_to_fifo(struct vub300_mmc_host *vub300, |
| 533 | struct offload_registers_access |
| 534 | *register_access, u8 func) |
| 535 | { |
| 536 | u8 r = vub300->fn[func].offload_point + vub300->fn[func].offload_count; |
| 537 | memcpy(&vub300->fn[func].reg[MAXREGMASK & r], register_access, |
| 538 | sizeof(struct offload_registers_access)); |
| 539 | vub300->fn[func].offload_count += 1; |
| 540 | vub300->total_offload_count += 1; |
| 541 | } |
| 542 | |
| 543 | static void add_offloaded_reg(struct vub300_mmc_host *vub300, |
| 544 | struct offload_registers_access *register_access) |
| 545 | { |
| 546 | u32 Register = ((0x03 & register_access->command_byte[0]) << 15) |
| 547 | | ((0xFF & register_access->command_byte[1]) << 7) |
| 548 | | ((0xFE & register_access->command_byte[2]) >> 1); |
| 549 | u8 func = ((0x70 & register_access->command_byte[0]) >> 4); |
| 550 | u8 regs = vub300->dynamic_register_count; |
| 551 | u8 i = 0; |
| 552 | while (0 < regs-- && 1 == vub300->sdio_register[i].activate) { |
| 553 | if (vub300->sdio_register[i].func_num == func && |
| 554 | vub300->sdio_register[i].sdio_reg == Register) { |
| 555 | if (vub300->sdio_register[i].prepared == 0) |
| 556 | vub300->sdio_register[i].prepared = 1; |
| 557 | vub300->sdio_register[i].response = |
| 558 | register_access->Respond_Byte[2]; |
| 559 | vub300->sdio_register[i].regvalue = |
| 560 | register_access->Respond_Byte[3]; |
| 561 | return; |
| 562 | } else { |
| 563 | i += 1; |
| 564 | continue; |
| 565 | } |
Javier Martinez Canillas | 7eece8d | 2015-09-16 11:30:04 +0200 | [diff] [blame] | 566 | } |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 567 | __add_offloaded_reg_to_fifo(vub300, register_access, func); |
| 568 | } |
| 569 | |
| 570 | static void check_vub300_port_status(struct vub300_mmc_host *vub300) |
| 571 | { |
| 572 | /* |
| 573 | * cmd_mutex is held by vub300_pollwork_thread, |
| 574 | * vub300_deadwork_thread or vub300_cmndwork_thread |
| 575 | */ |
| 576 | int retval; |
| 577 | retval = |
| 578 | usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0), |
| 579 | GET_SYSTEM_PORT_STATUS, |
| 580 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 581 | 0x0000, 0x0000, &vub300->system_port_status, |
| 582 | sizeof(vub300->system_port_status), HZ); |
| 583 | if (sizeof(vub300->system_port_status) == retval) |
| 584 | new_system_port_status(vub300); |
| 585 | } |
| 586 | |
| 587 | static void __vub300_irqpoll_response(struct vub300_mmc_host *vub300) |
| 588 | { |
| 589 | /* cmd_mutex is held by vub300_pollwork_thread */ |
| 590 | if (vub300->command_res_urb->actual_length == 0) |
| 591 | return; |
| 592 | |
| 593 | switch (vub300->resp.common.header_type) { |
| 594 | case RESPONSE_INTERRUPT: |
| 595 | mutex_lock(&vub300->irq_mutex); |
| 596 | if (vub300->irq_enabled) |
| 597 | mmc_signal_sdio_irq(vub300->mmc); |
| 598 | else |
| 599 | vub300->irqs_queued += 1; |
| 600 | vub300->irq_disabled = 1; |
| 601 | mutex_unlock(&vub300->irq_mutex); |
| 602 | break; |
| 603 | case RESPONSE_ERROR: |
| 604 | if (vub300->resp.error.error_code == SD_ERROR_NO_DEVICE) |
| 605 | check_vub300_port_status(vub300); |
| 606 | break; |
| 607 | case RESPONSE_STATUS: |
| 608 | vub300->system_port_status = vub300->resp.status; |
| 609 | new_system_port_status(vub300); |
| 610 | if (!vub300->card_present) |
| 611 | vub300_queue_poll_work(vub300, HZ / 5); |
| 612 | break; |
| 613 | case RESPONSE_IRQ_DISABLED: |
| 614 | { |
| 615 | int offloaded_data_length = vub300->resp.common.header_size - 3; |
| 616 | int register_count = offloaded_data_length >> 3; |
| 617 | int ri = 0; |
| 618 | while (register_count--) { |
| 619 | add_offloaded_reg(vub300, &vub300->resp.irq.reg[ri]); |
| 620 | ri += 1; |
| 621 | } |
| 622 | mutex_lock(&vub300->irq_mutex); |
| 623 | if (vub300->irq_enabled) |
| 624 | mmc_signal_sdio_irq(vub300->mmc); |
| 625 | else |
| 626 | vub300->irqs_queued += 1; |
| 627 | vub300->irq_disabled = 1; |
| 628 | mutex_unlock(&vub300->irq_mutex); |
| 629 | break; |
| 630 | } |
| 631 | case RESPONSE_IRQ_ENABLED: |
| 632 | { |
| 633 | int offloaded_data_length = vub300->resp.common.header_size - 3; |
| 634 | int register_count = offloaded_data_length >> 3; |
| 635 | int ri = 0; |
| 636 | while (register_count--) { |
| 637 | add_offloaded_reg(vub300, &vub300->resp.irq.reg[ri]); |
| 638 | ri += 1; |
| 639 | } |
| 640 | mutex_lock(&vub300->irq_mutex); |
| 641 | if (vub300->irq_enabled) |
| 642 | mmc_signal_sdio_irq(vub300->mmc); |
| 643 | else if (vub300->irqs_queued) |
| 644 | vub300->irqs_queued += 1; |
| 645 | else |
| 646 | vub300->irqs_queued += 1; |
| 647 | vub300->irq_disabled = 0; |
| 648 | mutex_unlock(&vub300->irq_mutex); |
| 649 | break; |
| 650 | } |
| 651 | case RESPONSE_NO_INTERRUPT: |
| 652 | vub300_queue_poll_work(vub300, 1); |
| 653 | break; |
| 654 | default: |
| 655 | break; |
| 656 | } |
| 657 | } |
| 658 | |
| 659 | static void __do_poll(struct vub300_mmc_host *vub300) |
| 660 | { |
| 661 | /* cmd_mutex is held by vub300_pollwork_thread */ |
Nicholas Mc Guire | 6bb836d | 2015-01-18 02:51:02 +0100 | [diff] [blame] | 662 | unsigned long commretval; |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 663 | mod_timer(&vub300->inactivity_timer, jiffies + HZ); |
| 664 | init_completion(&vub300->irqpoll_complete); |
| 665 | send_irqpoll(vub300); |
| 666 | commretval = wait_for_completion_timeout(&vub300->irqpoll_complete, |
| 667 | msecs_to_jiffies(500)); |
| 668 | if (vub300->usb_transport_fail) { |
| 669 | /* no need to do anything */ |
| 670 | } else if (commretval == 0) { |
| 671 | vub300->usb_timed_out = 1; |
| 672 | usb_kill_urb(vub300->command_out_urb); |
| 673 | usb_kill_urb(vub300->command_res_urb); |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 674 | } else { /* commretval > 0 */ |
| 675 | __vub300_irqpoll_response(vub300); |
| 676 | } |
| 677 | } |
| 678 | |
| 679 | /* this thread runs only when the driver |
| 680 | * is trying to poll the device for an IRQ |
| 681 | */ |
| 682 | static void vub300_pollwork_thread(struct work_struct *work) |
| 683 | { /* NOT irq */ |
| 684 | struct vub300_mmc_host *vub300 = container_of(work, |
| 685 | struct vub300_mmc_host, pollwork.work); |
| 686 | if (!vub300->interface) { |
| 687 | kref_put(&vub300->kref, vub300_delete); |
| 688 | return; |
| 689 | } |
| 690 | mutex_lock(&vub300->cmd_mutex); |
| 691 | if (vub300->cmd) { |
| 692 | vub300_queue_poll_work(vub300, 1); |
| 693 | } else if (!vub300->card_present) { |
| 694 | /* no need to do anything */ |
| 695 | } else { /* vub300->card_present */ |
| 696 | mutex_lock(&vub300->irq_mutex); |
| 697 | if (!vub300->irq_enabled) { |
| 698 | mutex_unlock(&vub300->irq_mutex); |
| 699 | } else if (vub300->irqs_queued) { |
| 700 | vub300->irqs_queued -= 1; |
| 701 | mmc_signal_sdio_irq(vub300->mmc); |
| 702 | mod_timer(&vub300->inactivity_timer, jiffies + HZ); |
| 703 | mutex_unlock(&vub300->irq_mutex); |
| 704 | } else { /* NOT vub300->irqs_queued */ |
| 705 | mutex_unlock(&vub300->irq_mutex); |
| 706 | __do_poll(vub300); |
| 707 | } |
| 708 | } |
| 709 | mutex_unlock(&vub300->cmd_mutex); |
| 710 | kref_put(&vub300->kref, vub300_delete); |
| 711 | } |
| 712 | |
| 713 | static void vub300_deadwork_thread(struct work_struct *work) |
| 714 | { /* NOT irq */ |
| 715 | struct vub300_mmc_host *vub300 = |
| 716 | container_of(work, struct vub300_mmc_host, deadwork); |
| 717 | if (!vub300->interface) { |
| 718 | kref_put(&vub300->kref, vub300_delete); |
| 719 | return; |
| 720 | } |
| 721 | mutex_lock(&vub300->cmd_mutex); |
| 722 | if (vub300->cmd) { |
| 723 | /* |
| 724 | * a command got in as the inactivity |
| 725 | * timer expired - so we just let the |
| 726 | * processing of the command show if |
| 727 | * the device is dead |
| 728 | */ |
| 729 | } else if (vub300->card_present) { |
| 730 | check_vub300_port_status(vub300); |
| 731 | } else if (vub300->mmc && vub300->mmc->card && |
| 732 | mmc_card_present(vub300->mmc->card)) { |
| 733 | /* |
| 734 | * the MMC core must not have responded |
| 735 | * to the previous indication - lets |
| 736 | * hope that it eventually does so we |
| 737 | * will just ignore this for now |
| 738 | */ |
| 739 | } else { |
| 740 | check_vub300_port_status(vub300); |
| 741 | } |
| 742 | mod_timer(&vub300->inactivity_timer, jiffies + HZ); |
| 743 | mutex_unlock(&vub300->cmd_mutex); |
| 744 | kref_put(&vub300->kref, vub300_delete); |
| 745 | } |
| 746 | |
| 747 | static void vub300_inactivity_timer_expired(unsigned long data) |
| 748 | { /* softirq */ |
| 749 | struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)data; |
| 750 | if (!vub300->interface) { |
| 751 | kref_put(&vub300->kref, vub300_delete); |
| 752 | } else if (vub300->cmd) { |
| 753 | mod_timer(&vub300->inactivity_timer, jiffies + HZ); |
| 754 | } else { |
| 755 | vub300_queue_dead_work(vub300); |
| 756 | mod_timer(&vub300->inactivity_timer, jiffies + HZ); |
| 757 | } |
| 758 | } |
| 759 | |
| 760 | static int vub300_response_error(u8 error_code) |
| 761 | { |
| 762 | switch (error_code) { |
| 763 | case SD_ERROR_PIO_TIMEOUT: |
| 764 | case SD_ERROR_1BIT_TIMEOUT: |
| 765 | case SD_ERROR_4BIT_TIMEOUT: |
| 766 | return -ETIMEDOUT; |
| 767 | case SD_ERROR_STAT_DATA: |
| 768 | case SD_ERROR_OVERRUN: |
| 769 | case SD_ERROR_STAT_CMD: |
| 770 | case SD_ERROR_STAT_CMD_TIMEOUT: |
| 771 | case SD_ERROR_SDCRDY_STUCK: |
| 772 | case SD_ERROR_UNHANDLED: |
| 773 | case SD_ERROR_1BIT_CRC_WRONG: |
| 774 | case SD_ERROR_4BIT_CRC_WRONG: |
| 775 | case SD_ERROR_1BIT_CRC_ERROR: |
| 776 | case SD_ERROR_4BIT_CRC_ERROR: |
| 777 | case SD_ERROR_NO_CMD_ENDBIT: |
| 778 | case SD_ERROR_NO_1BIT_DATEND: |
| 779 | case SD_ERROR_NO_4BIT_DATEND: |
| 780 | case SD_ERROR_1BIT_DATA_TIMEOUT: |
| 781 | case SD_ERROR_4BIT_DATA_TIMEOUT: |
| 782 | case SD_ERROR_1BIT_UNEXPECTED_TIMEOUT: |
| 783 | case SD_ERROR_4BIT_UNEXPECTED_TIMEOUT: |
| 784 | return -EILSEQ; |
| 785 | case 33: |
| 786 | return -EILSEQ; |
| 787 | case SD_ERROR_ILLEGAL_COMMAND: |
| 788 | return -EINVAL; |
| 789 | case SD_ERROR_NO_DEVICE: |
| 790 | return -ENOMEDIUM; |
| 791 | default: |
| 792 | return -ENODEV; |
| 793 | } |
| 794 | } |
| 795 | |
| 796 | static void command_res_completed(struct urb *urb) |
| 797 | { /* urb completion handler - hardirq */ |
| 798 | struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context; |
| 799 | if (urb->status) { |
| 800 | /* we have to let the initiator handle the error */ |
| 801 | } else if (vub300->command_res_urb->actual_length == 0) { |
| 802 | /* |
| 803 | * we have seen this happen once or twice and |
| 804 | * we suspect a buggy USB host controller |
| 805 | */ |
| 806 | } else if (!vub300->data) { |
Masanari Iida | 7122bbb | 2012-08-05 23:25:40 +0900 | [diff] [blame] | 807 | /* this means that the command (typically CMD52) succeeded */ |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 808 | } else if (vub300->resp.common.header_type != 0x02) { |
| 809 | /* |
| 810 | * this is an error response from the VUB300 chip |
| 811 | * and we let the initiator handle it |
| 812 | */ |
| 813 | } else if (vub300->urb) { |
| 814 | vub300->cmd->error = |
| 815 | vub300_response_error(vub300->resp.error.error_code); |
| 816 | usb_unlink_urb(vub300->urb); |
| 817 | } else { |
| 818 | vub300->cmd->error = |
| 819 | vub300_response_error(vub300->resp.error.error_code); |
| 820 | usb_sg_cancel(&vub300->sg_request); |
| 821 | } |
| 822 | complete(&vub300->command_complete); /* got_response_in */ |
| 823 | } |
| 824 | |
| 825 | static void command_out_completed(struct urb *urb) |
| 826 | { /* urb completion handler - hardirq */ |
| 827 | struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context; |
| 828 | if (urb->status) { |
| 829 | complete(&vub300->command_complete); |
| 830 | } else { |
| 831 | int ret; |
| 832 | unsigned int pipe = |
| 833 | usb_rcvbulkpipe(vub300->udev, vub300->cmnd_res_ep); |
| 834 | usb_fill_bulk_urb(vub300->command_res_urb, vub300->udev, pipe, |
| 835 | &vub300->resp, sizeof(vub300->resp), |
| 836 | command_res_completed, vub300); |
| 837 | vub300->command_res_urb->actual_length = 0; |
| 838 | ret = usb_submit_urb(vub300->command_res_urb, GFP_ATOMIC); |
| 839 | if (ret == 0) { |
| 840 | /* |
| 841 | * the urb completion handler will call |
| 842 | * our completion handler |
| 843 | */ |
| 844 | } else { |
| 845 | /* |
| 846 | * and thus we only call it directly |
| 847 | * when it will not be called |
| 848 | */ |
| 849 | complete(&vub300->command_complete); |
| 850 | } |
| 851 | } |
| 852 | } |
| 853 | |
| 854 | /* |
| 855 | * the STUFF bits are masked out for the comparisons |
| 856 | */ |
| 857 | static void snoop_block_size_and_bus_width(struct vub300_mmc_host *vub300, |
| 858 | u32 cmd_arg) |
| 859 | { |
| 860 | if ((0xFBFFFE00 & cmd_arg) == 0x80022200) |
| 861 | vub300->fbs[1] = (cmd_arg << 8) | (0x00FF & vub300->fbs[1]); |
| 862 | else if ((0xFBFFFE00 & cmd_arg) == 0x80022000) |
| 863 | vub300->fbs[1] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[1]); |
| 864 | else if ((0xFBFFFE00 & cmd_arg) == 0x80042200) |
| 865 | vub300->fbs[2] = (cmd_arg << 8) | (0x00FF & vub300->fbs[2]); |
| 866 | else if ((0xFBFFFE00 & cmd_arg) == 0x80042000) |
| 867 | vub300->fbs[2] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[2]); |
| 868 | else if ((0xFBFFFE00 & cmd_arg) == 0x80062200) |
| 869 | vub300->fbs[3] = (cmd_arg << 8) | (0x00FF & vub300->fbs[3]); |
| 870 | else if ((0xFBFFFE00 & cmd_arg) == 0x80062000) |
| 871 | vub300->fbs[3] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[3]); |
| 872 | else if ((0xFBFFFE00 & cmd_arg) == 0x80082200) |
| 873 | vub300->fbs[4] = (cmd_arg << 8) | (0x00FF & vub300->fbs[4]); |
| 874 | else if ((0xFBFFFE00 & cmd_arg) == 0x80082000) |
| 875 | vub300->fbs[4] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[4]); |
| 876 | else if ((0xFBFFFE00 & cmd_arg) == 0x800A2200) |
| 877 | vub300->fbs[5] = (cmd_arg << 8) | (0x00FF & vub300->fbs[5]); |
| 878 | else if ((0xFBFFFE00 & cmd_arg) == 0x800A2000) |
| 879 | vub300->fbs[5] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[5]); |
| 880 | else if ((0xFBFFFE00 & cmd_arg) == 0x800C2200) |
| 881 | vub300->fbs[6] = (cmd_arg << 8) | (0x00FF & vub300->fbs[6]); |
| 882 | else if ((0xFBFFFE00 & cmd_arg) == 0x800C2000) |
| 883 | vub300->fbs[6] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[6]); |
| 884 | else if ((0xFBFFFE00 & cmd_arg) == 0x800E2200) |
| 885 | vub300->fbs[7] = (cmd_arg << 8) | (0x00FF & vub300->fbs[7]); |
| 886 | else if ((0xFBFFFE00 & cmd_arg) == 0x800E2000) |
| 887 | vub300->fbs[7] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[7]); |
| 888 | else if ((0xFBFFFE03 & cmd_arg) == 0x80000E00) |
| 889 | vub300->bus_width = 1; |
| 890 | else if ((0xFBFFFE03 & cmd_arg) == 0x80000E02) |
| 891 | vub300->bus_width = 4; |
| 892 | } |
| 893 | |
| 894 | static void send_command(struct vub300_mmc_host *vub300) |
| 895 | { |
| 896 | /* cmd_mutex is held by vub300_cmndwork_thread */ |
| 897 | struct mmc_command *cmd = vub300->cmd; |
| 898 | struct mmc_data *data = vub300->data; |
| 899 | int retval; |
| 900 | int i; |
| 901 | u8 response_type; |
| 902 | if (vub300->app_spec) { |
| 903 | switch (cmd->opcode) { |
| 904 | case 6: |
| 905 | response_type = SDRT_1; |
| 906 | vub300->resp_len = 6; |
| 907 | if (0x00000000 == (0x00000003 & cmd->arg)) |
| 908 | vub300->bus_width = 1; |
| 909 | else if (0x00000002 == (0x00000003 & cmd->arg)) |
| 910 | vub300->bus_width = 4; |
| 911 | else |
| 912 | dev_err(&vub300->udev->dev, |
| 913 | "unexpected ACMD6 bus_width=%d\n", |
| 914 | 0x00000003 & cmd->arg); |
| 915 | break; |
| 916 | case 13: |
| 917 | response_type = SDRT_1; |
| 918 | vub300->resp_len = 6; |
| 919 | break; |
| 920 | case 22: |
| 921 | response_type = SDRT_1; |
| 922 | vub300->resp_len = 6; |
| 923 | break; |
| 924 | case 23: |
| 925 | response_type = SDRT_1; |
| 926 | vub300->resp_len = 6; |
| 927 | break; |
| 928 | case 41: |
| 929 | response_type = SDRT_3; |
| 930 | vub300->resp_len = 6; |
| 931 | break; |
| 932 | case 42: |
| 933 | response_type = SDRT_1; |
| 934 | vub300->resp_len = 6; |
| 935 | break; |
| 936 | case 51: |
| 937 | response_type = SDRT_1; |
| 938 | vub300->resp_len = 6; |
| 939 | break; |
| 940 | case 55: |
| 941 | response_type = SDRT_1; |
| 942 | vub300->resp_len = 6; |
| 943 | break; |
| 944 | default: |
| 945 | vub300->resp_len = 0; |
| 946 | cmd->error = -EINVAL; |
| 947 | complete(&vub300->command_complete); |
| 948 | return; |
| 949 | } |
| 950 | vub300->app_spec = 0; |
| 951 | } else { |
| 952 | switch (cmd->opcode) { |
| 953 | case 0: |
| 954 | response_type = SDRT_NONE; |
| 955 | vub300->resp_len = 0; |
| 956 | break; |
| 957 | case 1: |
| 958 | response_type = SDRT_3; |
| 959 | vub300->resp_len = 6; |
| 960 | break; |
| 961 | case 2: |
| 962 | response_type = SDRT_2; |
| 963 | vub300->resp_len = 17; |
| 964 | break; |
| 965 | case 3: |
| 966 | response_type = SDRT_6; |
| 967 | vub300->resp_len = 6; |
| 968 | break; |
| 969 | case 4: |
| 970 | response_type = SDRT_NONE; |
| 971 | vub300->resp_len = 0; |
| 972 | break; |
| 973 | case 5: |
| 974 | response_type = SDRT_4; |
| 975 | vub300->resp_len = 6; |
| 976 | break; |
| 977 | case 6: |
| 978 | response_type = SDRT_1; |
| 979 | vub300->resp_len = 6; |
| 980 | break; |
| 981 | case 7: |
| 982 | response_type = SDRT_1B; |
| 983 | vub300->resp_len = 6; |
| 984 | break; |
| 985 | case 8: |
| 986 | response_type = SDRT_7; |
| 987 | vub300->resp_len = 6; |
| 988 | break; |
| 989 | case 9: |
| 990 | response_type = SDRT_2; |
| 991 | vub300->resp_len = 17; |
| 992 | break; |
| 993 | case 10: |
| 994 | response_type = SDRT_2; |
| 995 | vub300->resp_len = 17; |
| 996 | break; |
| 997 | case 12: |
| 998 | response_type = SDRT_1B; |
| 999 | vub300->resp_len = 6; |
| 1000 | break; |
| 1001 | case 13: |
| 1002 | response_type = SDRT_1; |
| 1003 | vub300->resp_len = 6; |
| 1004 | break; |
| 1005 | case 15: |
| 1006 | response_type = SDRT_NONE; |
| 1007 | vub300->resp_len = 0; |
| 1008 | break; |
| 1009 | case 16: |
| 1010 | for (i = 0; i < ARRAY_SIZE(vub300->fbs); i++) |
| 1011 | vub300->fbs[i] = 0xFFFF & cmd->arg; |
| 1012 | response_type = SDRT_1; |
| 1013 | vub300->resp_len = 6; |
| 1014 | break; |
| 1015 | case 17: |
| 1016 | case 18: |
| 1017 | case 24: |
| 1018 | case 25: |
| 1019 | case 27: |
| 1020 | response_type = SDRT_1; |
| 1021 | vub300->resp_len = 6; |
| 1022 | break; |
| 1023 | case 28: |
| 1024 | case 29: |
| 1025 | response_type = SDRT_1B; |
| 1026 | vub300->resp_len = 6; |
| 1027 | break; |
| 1028 | case 30: |
| 1029 | case 32: |
| 1030 | case 33: |
| 1031 | response_type = SDRT_1; |
| 1032 | vub300->resp_len = 6; |
| 1033 | break; |
| 1034 | case 38: |
| 1035 | response_type = SDRT_1B; |
| 1036 | vub300->resp_len = 6; |
| 1037 | break; |
| 1038 | case 42: |
| 1039 | response_type = SDRT_1; |
| 1040 | vub300->resp_len = 6; |
| 1041 | break; |
| 1042 | case 52: |
| 1043 | response_type = SDRT_5; |
| 1044 | vub300->resp_len = 6; |
| 1045 | snoop_block_size_and_bus_width(vub300, cmd->arg); |
| 1046 | break; |
| 1047 | case 53: |
| 1048 | response_type = SDRT_5; |
| 1049 | vub300->resp_len = 6; |
| 1050 | break; |
| 1051 | case 55: |
| 1052 | response_type = SDRT_1; |
| 1053 | vub300->resp_len = 6; |
| 1054 | vub300->app_spec = 1; |
| 1055 | break; |
| 1056 | case 56: |
| 1057 | response_type = SDRT_1; |
| 1058 | vub300->resp_len = 6; |
| 1059 | break; |
| 1060 | default: |
| 1061 | vub300->resp_len = 0; |
| 1062 | cmd->error = -EINVAL; |
| 1063 | complete(&vub300->command_complete); |
| 1064 | return; |
| 1065 | } |
| 1066 | } |
| 1067 | /* |
| 1068 | * it is a shame that we can not use "sizeof(struct sd_command_header)" |
| 1069 | * this is because the packet _must_ be padded to 64 bytes |
| 1070 | */ |
| 1071 | vub300->cmnd.head.header_size = 20; |
| 1072 | vub300->cmnd.head.header_type = 0x00; |
| 1073 | vub300->cmnd.head.port_number = 0; /* "0" means port 1 */ |
| 1074 | vub300->cmnd.head.command_type = 0x00; /* standard read command */ |
| 1075 | vub300->cmnd.head.response_type = response_type; |
| 1076 | vub300->cmnd.head.command_index = cmd->opcode; |
| 1077 | vub300->cmnd.head.arguments[0] = cmd->arg >> 24; |
| 1078 | vub300->cmnd.head.arguments[1] = cmd->arg >> 16; |
| 1079 | vub300->cmnd.head.arguments[2] = cmd->arg >> 8; |
| 1080 | vub300->cmnd.head.arguments[3] = cmd->arg >> 0; |
| 1081 | if (cmd->opcode == 52) { |
| 1082 | int fn = 0x7 & (cmd->arg >> 28); |
| 1083 | vub300->cmnd.head.block_count[0] = 0; |
| 1084 | vub300->cmnd.head.block_count[1] = 0; |
| 1085 | vub300->cmnd.head.block_size[0] = (vub300->fbs[fn] >> 8) & 0xFF; |
| 1086 | vub300->cmnd.head.block_size[1] = (vub300->fbs[fn] >> 0) & 0xFF; |
| 1087 | vub300->cmnd.head.command_type = 0x00; |
| 1088 | vub300->cmnd.head.transfer_size[0] = 0; |
| 1089 | vub300->cmnd.head.transfer_size[1] = 0; |
| 1090 | vub300->cmnd.head.transfer_size[2] = 0; |
| 1091 | vub300->cmnd.head.transfer_size[3] = 0; |
| 1092 | } else if (!data) { |
| 1093 | vub300->cmnd.head.block_count[0] = 0; |
| 1094 | vub300->cmnd.head.block_count[1] = 0; |
| 1095 | vub300->cmnd.head.block_size[0] = (vub300->fbs[0] >> 8) & 0xFF; |
| 1096 | vub300->cmnd.head.block_size[1] = (vub300->fbs[0] >> 0) & 0xFF; |
| 1097 | vub300->cmnd.head.command_type = 0x00; |
| 1098 | vub300->cmnd.head.transfer_size[0] = 0; |
| 1099 | vub300->cmnd.head.transfer_size[1] = 0; |
| 1100 | vub300->cmnd.head.transfer_size[2] = 0; |
| 1101 | vub300->cmnd.head.transfer_size[3] = 0; |
| 1102 | } else if (cmd->opcode == 53) { |
| 1103 | int fn = 0x7 & (cmd->arg >> 28); |
| 1104 | if (0x08 & vub300->cmnd.head.arguments[0]) { /* BLOCK MODE */ |
| 1105 | vub300->cmnd.head.block_count[0] = |
| 1106 | (data->blocks >> 8) & 0xFF; |
| 1107 | vub300->cmnd.head.block_count[1] = |
| 1108 | (data->blocks >> 0) & 0xFF; |
| 1109 | vub300->cmnd.head.block_size[0] = |
| 1110 | (data->blksz >> 8) & 0xFF; |
| 1111 | vub300->cmnd.head.block_size[1] = |
| 1112 | (data->blksz >> 0) & 0xFF; |
| 1113 | } else { /* BYTE MODE */ |
| 1114 | vub300->cmnd.head.block_count[0] = 0; |
| 1115 | vub300->cmnd.head.block_count[1] = 0; |
| 1116 | vub300->cmnd.head.block_size[0] = |
| 1117 | (vub300->datasize >> 8) & 0xFF; |
| 1118 | vub300->cmnd.head.block_size[1] = |
| 1119 | (vub300->datasize >> 0) & 0xFF; |
| 1120 | } |
| 1121 | vub300->cmnd.head.command_type = |
| 1122 | (MMC_DATA_READ & data->flags) ? 0x00 : 0x80; |
| 1123 | vub300->cmnd.head.transfer_size[0] = |
| 1124 | (vub300->datasize >> 24) & 0xFF; |
| 1125 | vub300->cmnd.head.transfer_size[1] = |
| 1126 | (vub300->datasize >> 16) & 0xFF; |
| 1127 | vub300->cmnd.head.transfer_size[2] = |
| 1128 | (vub300->datasize >> 8) & 0xFF; |
| 1129 | vub300->cmnd.head.transfer_size[3] = |
| 1130 | (vub300->datasize >> 0) & 0xFF; |
| 1131 | if (vub300->datasize < vub300->fbs[fn]) { |
| 1132 | vub300->cmnd.head.block_count[0] = 0; |
| 1133 | vub300->cmnd.head.block_count[1] = 0; |
| 1134 | } |
| 1135 | } else { |
| 1136 | vub300->cmnd.head.block_count[0] = (data->blocks >> 8) & 0xFF; |
| 1137 | vub300->cmnd.head.block_count[1] = (data->blocks >> 0) & 0xFF; |
| 1138 | vub300->cmnd.head.block_size[0] = (data->blksz >> 8) & 0xFF; |
| 1139 | vub300->cmnd.head.block_size[1] = (data->blksz >> 0) & 0xFF; |
| 1140 | vub300->cmnd.head.command_type = |
| 1141 | (MMC_DATA_READ & data->flags) ? 0x00 : 0x80; |
| 1142 | vub300->cmnd.head.transfer_size[0] = |
| 1143 | (vub300->datasize >> 24) & 0xFF; |
| 1144 | vub300->cmnd.head.transfer_size[1] = |
| 1145 | (vub300->datasize >> 16) & 0xFF; |
| 1146 | vub300->cmnd.head.transfer_size[2] = |
| 1147 | (vub300->datasize >> 8) & 0xFF; |
| 1148 | vub300->cmnd.head.transfer_size[3] = |
| 1149 | (vub300->datasize >> 0) & 0xFF; |
| 1150 | if (vub300->datasize < vub300->fbs[0]) { |
| 1151 | vub300->cmnd.head.block_count[0] = 0; |
| 1152 | vub300->cmnd.head.block_count[1] = 0; |
| 1153 | } |
| 1154 | } |
| 1155 | if (vub300->cmnd.head.block_size[0] || vub300->cmnd.head.block_size[1]) { |
| 1156 | u16 block_size = vub300->cmnd.head.block_size[1] | |
| 1157 | (vub300->cmnd.head.block_size[0] << 8); |
| 1158 | u16 block_boundary = FIRMWARE_BLOCK_BOUNDARY - |
| 1159 | (FIRMWARE_BLOCK_BOUNDARY % block_size); |
| 1160 | vub300->cmnd.head.block_boundary[0] = |
| 1161 | (block_boundary >> 8) & 0xFF; |
| 1162 | vub300->cmnd.head.block_boundary[1] = |
| 1163 | (block_boundary >> 0) & 0xFF; |
| 1164 | } else { |
| 1165 | vub300->cmnd.head.block_boundary[0] = 0; |
| 1166 | vub300->cmnd.head.block_boundary[1] = 0; |
| 1167 | } |
| 1168 | usb_fill_bulk_urb(vub300->command_out_urb, vub300->udev, |
| 1169 | usb_sndbulkpipe(vub300->udev, vub300->cmnd_out_ep), |
| 1170 | &vub300->cmnd, sizeof(vub300->cmnd), |
| 1171 | command_out_completed, vub300); |
| 1172 | retval = usb_submit_urb(vub300->command_out_urb, GFP_KERNEL); |
| 1173 | if (retval < 0) { |
| 1174 | cmd->error = retval; |
| 1175 | complete(&vub300->command_complete); |
| 1176 | return; |
| 1177 | } else { |
| 1178 | return; |
| 1179 | } |
| 1180 | } |
| 1181 | |
| 1182 | /* |
| 1183 | * timer callback runs in atomic mode |
| 1184 | * so it cannot call usb_kill_urb() |
| 1185 | */ |
| 1186 | static void vub300_sg_timed_out(unsigned long data) |
| 1187 | { |
| 1188 | struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)data; |
| 1189 | vub300->usb_timed_out = 1; |
| 1190 | usb_sg_cancel(&vub300->sg_request); |
| 1191 | usb_unlink_urb(vub300->command_out_urb); |
| 1192 | usb_unlink_urb(vub300->command_res_urb); |
| 1193 | } |
| 1194 | |
| 1195 | static u16 roundup_to_multiple_of_64(u16 number) |
| 1196 | { |
| 1197 | return 0xFFC0 & (0x3F + number); |
| 1198 | } |
| 1199 | |
| 1200 | /* |
| 1201 | * this is a separate function to solve the 80 column width restriction |
| 1202 | */ |
| 1203 | static void __download_offload_pseudocode(struct vub300_mmc_host *vub300, |
| 1204 | const struct firmware *fw) |
| 1205 | { |
| 1206 | u8 register_count = 0; |
| 1207 | u16 ts = 0; |
| 1208 | u16 interrupt_size = 0; |
| 1209 | const u8 *data = fw->data; |
| 1210 | int size = fw->size; |
| 1211 | u8 c; |
| 1212 | dev_info(&vub300->udev->dev, "using %s for SDIO offload processing\n", |
| 1213 | vub300->vub_name); |
| 1214 | do { |
| 1215 | c = *data++; |
| 1216 | } while (size-- && c); /* skip comment */ |
| 1217 | dev_info(&vub300->udev->dev, "using offload firmware %s %s\n", fw->data, |
| 1218 | vub300->vub_name); |
| 1219 | if (size < 4) { |
| 1220 | dev_err(&vub300->udev->dev, |
| 1221 | "corrupt offload pseudocode in firmware %s\n", |
| 1222 | vub300->vub_name); |
| 1223 | strncpy(vub300->vub_name, "corrupt offload pseudocode", |
| 1224 | sizeof(vub300->vub_name)); |
| 1225 | return; |
| 1226 | } |
| 1227 | interrupt_size += *data++; |
| 1228 | size -= 1; |
| 1229 | interrupt_size <<= 8; |
| 1230 | interrupt_size += *data++; |
| 1231 | size -= 1; |
| 1232 | if (interrupt_size < size) { |
| 1233 | u16 xfer_length = roundup_to_multiple_of_64(interrupt_size); |
| 1234 | u8 *xfer_buffer = kmalloc(xfer_length, GFP_KERNEL); |
| 1235 | if (xfer_buffer) { |
| 1236 | int retval; |
| 1237 | memcpy(xfer_buffer, data, interrupt_size); |
| 1238 | memset(xfer_buffer + interrupt_size, 0, |
| 1239 | xfer_length - interrupt_size); |
| 1240 | size -= interrupt_size; |
| 1241 | data += interrupt_size; |
| 1242 | retval = |
| 1243 | usb_control_msg(vub300->udev, |
| 1244 | usb_sndctrlpipe(vub300->udev, 0), |
| 1245 | SET_INTERRUPT_PSEUDOCODE, |
| 1246 | USB_DIR_OUT | USB_TYPE_VENDOR | |
| 1247 | USB_RECIP_DEVICE, 0x0000, 0x0000, |
| 1248 | xfer_buffer, xfer_length, HZ); |
| 1249 | kfree(xfer_buffer); |
| 1250 | if (retval < 0) { |
| 1251 | strncpy(vub300->vub_name, |
| 1252 | "SDIO pseudocode download failed", |
| 1253 | sizeof(vub300->vub_name)); |
| 1254 | return; |
| 1255 | } |
| 1256 | } else { |
| 1257 | dev_err(&vub300->udev->dev, |
| 1258 | "not enough memory for xfer buffer to send" |
| 1259 | " INTERRUPT_PSEUDOCODE for %s %s\n", fw->data, |
| 1260 | vub300->vub_name); |
| 1261 | strncpy(vub300->vub_name, |
| 1262 | "SDIO interrupt pseudocode download failed", |
| 1263 | sizeof(vub300->vub_name)); |
| 1264 | return; |
| 1265 | } |
| 1266 | } else { |
| 1267 | dev_err(&vub300->udev->dev, |
| 1268 | "corrupt interrupt pseudocode in firmware %s %s\n", |
| 1269 | fw->data, vub300->vub_name); |
| 1270 | strncpy(vub300->vub_name, "corrupt interrupt pseudocode", |
| 1271 | sizeof(vub300->vub_name)); |
| 1272 | return; |
| 1273 | } |
| 1274 | ts += *data++; |
| 1275 | size -= 1; |
| 1276 | ts <<= 8; |
| 1277 | ts += *data++; |
| 1278 | size -= 1; |
| 1279 | if (ts < size) { |
| 1280 | u16 xfer_length = roundup_to_multiple_of_64(ts); |
| 1281 | u8 *xfer_buffer = kmalloc(xfer_length, GFP_KERNEL); |
| 1282 | if (xfer_buffer) { |
| 1283 | int retval; |
| 1284 | memcpy(xfer_buffer, data, ts); |
| 1285 | memset(xfer_buffer + ts, 0, |
| 1286 | xfer_length - ts); |
| 1287 | size -= ts; |
| 1288 | data += ts; |
| 1289 | retval = |
| 1290 | usb_control_msg(vub300->udev, |
| 1291 | usb_sndctrlpipe(vub300->udev, 0), |
| 1292 | SET_TRANSFER_PSEUDOCODE, |
| 1293 | USB_DIR_OUT | USB_TYPE_VENDOR | |
| 1294 | USB_RECIP_DEVICE, 0x0000, 0x0000, |
| 1295 | xfer_buffer, xfer_length, HZ); |
| 1296 | kfree(xfer_buffer); |
| 1297 | if (retval < 0) { |
| 1298 | strncpy(vub300->vub_name, |
| 1299 | "SDIO pseudocode download failed", |
| 1300 | sizeof(vub300->vub_name)); |
| 1301 | return; |
| 1302 | } |
| 1303 | } else { |
| 1304 | dev_err(&vub300->udev->dev, |
| 1305 | "not enough memory for xfer buffer to send" |
| 1306 | " TRANSFER_PSEUDOCODE for %s %s\n", fw->data, |
| 1307 | vub300->vub_name); |
| 1308 | strncpy(vub300->vub_name, |
| 1309 | "SDIO transfer pseudocode download failed", |
| 1310 | sizeof(vub300->vub_name)); |
| 1311 | return; |
| 1312 | } |
| 1313 | } else { |
| 1314 | dev_err(&vub300->udev->dev, |
| 1315 | "corrupt transfer pseudocode in firmware %s %s\n", |
| 1316 | fw->data, vub300->vub_name); |
| 1317 | strncpy(vub300->vub_name, "corrupt transfer pseudocode", |
| 1318 | sizeof(vub300->vub_name)); |
| 1319 | return; |
| 1320 | } |
| 1321 | register_count += *data++; |
| 1322 | size -= 1; |
| 1323 | if (register_count * 4 == size) { |
| 1324 | int I = vub300->dynamic_register_count = register_count; |
| 1325 | int i = 0; |
| 1326 | while (I--) { |
| 1327 | unsigned int func_num = 0; |
| 1328 | vub300->sdio_register[i].func_num = *data++; |
| 1329 | size -= 1; |
| 1330 | func_num += *data++; |
| 1331 | size -= 1; |
| 1332 | func_num <<= 8; |
| 1333 | func_num += *data++; |
| 1334 | size -= 1; |
| 1335 | func_num <<= 8; |
| 1336 | func_num += *data++; |
| 1337 | size -= 1; |
| 1338 | vub300->sdio_register[i].sdio_reg = func_num; |
| 1339 | vub300->sdio_register[i].activate = 1; |
| 1340 | vub300->sdio_register[i].prepared = 0; |
| 1341 | i += 1; |
| 1342 | } |
| 1343 | dev_info(&vub300->udev->dev, |
| 1344 | "initialized %d dynamic pseudocode registers\n", |
| 1345 | vub300->dynamic_register_count); |
| 1346 | return; |
| 1347 | } else { |
| 1348 | dev_err(&vub300->udev->dev, |
| 1349 | "corrupt dynamic registers in firmware %s\n", |
| 1350 | vub300->vub_name); |
| 1351 | strncpy(vub300->vub_name, "corrupt dynamic registers", |
| 1352 | sizeof(vub300->vub_name)); |
| 1353 | return; |
| 1354 | } |
| 1355 | } |
| 1356 | |
| 1357 | /* |
| 1358 | * if the binary containing the EMPTY PseudoCode can not be found |
| 1359 | * vub300->vub_name is set anyway in order to prevent an automatic retry |
| 1360 | */ |
| 1361 | static void download_offload_pseudocode(struct vub300_mmc_host *vub300) |
| 1362 | { |
| 1363 | struct mmc_card *card = vub300->mmc->card; |
| 1364 | int sdio_funcs = card->sdio_funcs; |
| 1365 | const struct firmware *fw = NULL; |
| 1366 | int l = snprintf(vub300->vub_name, sizeof(vub300->vub_name), |
| 1367 | "vub_%04X%04X", card->cis.vendor, card->cis.device); |
| 1368 | int n = 0; |
| 1369 | int retval; |
| 1370 | for (n = 0; n < sdio_funcs; n++) { |
| 1371 | struct sdio_func *sf = card->sdio_func[n]; |
| 1372 | l += snprintf(vub300->vub_name + l, |
| 1373 | sizeof(vub300->vub_name) - l, "_%04X%04X", |
| 1374 | sf->vendor, sf->device); |
Javier Martinez Canillas | 7eece8d | 2015-09-16 11:30:04 +0200 | [diff] [blame] | 1375 | } |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 1376 | snprintf(vub300->vub_name + l, sizeof(vub300->vub_name) - l, ".bin"); |
| 1377 | dev_info(&vub300->udev->dev, "requesting offload firmware %s\n", |
| 1378 | vub300->vub_name); |
| 1379 | retval = request_firmware(&fw, vub300->vub_name, &card->dev); |
| 1380 | if (retval < 0) { |
| 1381 | strncpy(vub300->vub_name, "vub_default.bin", |
| 1382 | sizeof(vub300->vub_name)); |
| 1383 | retval = request_firmware(&fw, vub300->vub_name, &card->dev); |
| 1384 | if (retval < 0) { |
| 1385 | strncpy(vub300->vub_name, |
| 1386 | "no SDIO offload firmware found", |
| 1387 | sizeof(vub300->vub_name)); |
| 1388 | } else { |
| 1389 | __download_offload_pseudocode(vub300, fw); |
| 1390 | release_firmware(fw); |
| 1391 | } |
| 1392 | } else { |
| 1393 | __download_offload_pseudocode(vub300, fw); |
| 1394 | release_firmware(fw); |
| 1395 | } |
| 1396 | } |
| 1397 | |
| 1398 | static void vub300_usb_bulk_msg_completion(struct urb *urb) |
| 1399 | { /* urb completion handler - hardirq */ |
| 1400 | complete((struct completion *)urb->context); |
| 1401 | } |
| 1402 | |
| 1403 | static int vub300_usb_bulk_msg(struct vub300_mmc_host *vub300, |
| 1404 | unsigned int pipe, void *data, int len, |
| 1405 | int *actual_length, int timeout_msecs) |
| 1406 | { |
| 1407 | /* cmd_mutex is held by vub300_cmndwork_thread */ |
| 1408 | struct usb_device *usb_dev = vub300->udev; |
| 1409 | struct completion done; |
| 1410 | int retval; |
| 1411 | vub300->urb = usb_alloc_urb(0, GFP_KERNEL); |
| 1412 | if (!vub300->urb) |
| 1413 | return -ENOMEM; |
| 1414 | usb_fill_bulk_urb(vub300->urb, usb_dev, pipe, data, len, |
| 1415 | vub300_usb_bulk_msg_completion, NULL); |
| 1416 | init_completion(&done); |
| 1417 | vub300->urb->context = &done; |
| 1418 | vub300->urb->actual_length = 0; |
| 1419 | retval = usb_submit_urb(vub300->urb, GFP_KERNEL); |
| 1420 | if (unlikely(retval)) |
| 1421 | goto out; |
| 1422 | if (!wait_for_completion_timeout |
| 1423 | (&done, msecs_to_jiffies(timeout_msecs))) { |
| 1424 | retval = -ETIMEDOUT; |
| 1425 | usb_kill_urb(vub300->urb); |
| 1426 | } else { |
| 1427 | retval = vub300->urb->status; |
| 1428 | } |
| 1429 | out: |
| 1430 | *actual_length = vub300->urb->actual_length; |
| 1431 | usb_free_urb(vub300->urb); |
| 1432 | vub300->urb = NULL; |
| 1433 | return retval; |
| 1434 | } |
| 1435 | |
| 1436 | static int __command_read_data(struct vub300_mmc_host *vub300, |
| 1437 | struct mmc_command *cmd, struct mmc_data *data) |
| 1438 | { |
| 1439 | /* cmd_mutex is held by vub300_cmndwork_thread */ |
| 1440 | int linear_length = vub300->datasize; |
| 1441 | int padded_length = vub300->large_usb_packets ? |
| 1442 | ((511 + linear_length) >> 9) << 9 : |
| 1443 | ((63 + linear_length) >> 6) << 6; |
| 1444 | if ((padded_length == linear_length) || !pad_input_to_usb_pkt) { |
| 1445 | int result; |
| 1446 | unsigned pipe; |
| 1447 | pipe = usb_rcvbulkpipe(vub300->udev, vub300->data_inp_ep); |
| 1448 | result = usb_sg_init(&vub300->sg_request, vub300->udev, |
| 1449 | pipe, 0, data->sg, |
| 1450 | data->sg_len, 0, GFP_KERNEL); |
| 1451 | if (result < 0) { |
| 1452 | usb_unlink_urb(vub300->command_out_urb); |
| 1453 | usb_unlink_urb(vub300->command_res_urb); |
| 1454 | cmd->error = result; |
| 1455 | data->bytes_xfered = 0; |
| 1456 | return 0; |
| 1457 | } else { |
| 1458 | vub300->sg_transfer_timer.expires = |
| 1459 | jiffies + msecs_to_jiffies(2000 + |
| 1460 | (linear_length / 16384)); |
| 1461 | add_timer(&vub300->sg_transfer_timer); |
| 1462 | usb_sg_wait(&vub300->sg_request); |
| 1463 | del_timer(&vub300->sg_transfer_timer); |
| 1464 | if (vub300->sg_request.status < 0) { |
| 1465 | cmd->error = vub300->sg_request.status; |
| 1466 | data->bytes_xfered = 0; |
| 1467 | return 0; |
| 1468 | } else { |
| 1469 | data->bytes_xfered = vub300->datasize; |
| 1470 | return linear_length; |
| 1471 | } |
| 1472 | } |
| 1473 | } else { |
| 1474 | u8 *buf = kmalloc(padded_length, GFP_KERNEL); |
| 1475 | if (buf) { |
| 1476 | int result; |
| 1477 | unsigned pipe = usb_rcvbulkpipe(vub300->udev, |
| 1478 | vub300->data_inp_ep); |
| 1479 | int actual_length = 0; |
| 1480 | result = vub300_usb_bulk_msg(vub300, pipe, buf, |
| 1481 | padded_length, &actual_length, |
| 1482 | 2000 + (padded_length / 16384)); |
| 1483 | if (result < 0) { |
| 1484 | cmd->error = result; |
| 1485 | data->bytes_xfered = 0; |
| 1486 | kfree(buf); |
| 1487 | return 0; |
| 1488 | } else if (actual_length < linear_length) { |
| 1489 | cmd->error = -EREMOTEIO; |
| 1490 | data->bytes_xfered = 0; |
| 1491 | kfree(buf); |
| 1492 | return 0; |
| 1493 | } else { |
| 1494 | sg_copy_from_buffer(data->sg, data->sg_len, buf, |
| 1495 | linear_length); |
| 1496 | kfree(buf); |
| 1497 | data->bytes_xfered = vub300->datasize; |
| 1498 | return linear_length; |
| 1499 | } |
| 1500 | } else { |
| 1501 | cmd->error = -ENOMEM; |
| 1502 | data->bytes_xfered = 0; |
| 1503 | return 0; |
| 1504 | } |
| 1505 | } |
| 1506 | } |
| 1507 | |
| 1508 | static int __command_write_data(struct vub300_mmc_host *vub300, |
| 1509 | struct mmc_command *cmd, struct mmc_data *data) |
| 1510 | { |
| 1511 | /* cmd_mutex is held by vub300_cmndwork_thread */ |
| 1512 | unsigned pipe = usb_sndbulkpipe(vub300->udev, vub300->data_out_ep); |
| 1513 | int linear_length = vub300->datasize; |
| 1514 | int modulo_64_length = linear_length & 0x003F; |
| 1515 | int modulo_512_length = linear_length & 0x01FF; |
| 1516 | if (linear_length < 64) { |
| 1517 | int result; |
| 1518 | int actual_length; |
| 1519 | sg_copy_to_buffer(data->sg, data->sg_len, |
| 1520 | vub300->padded_buffer, |
| 1521 | sizeof(vub300->padded_buffer)); |
| 1522 | memset(vub300->padded_buffer + linear_length, 0, |
| 1523 | sizeof(vub300->padded_buffer) - linear_length); |
| 1524 | result = vub300_usb_bulk_msg(vub300, pipe, vub300->padded_buffer, |
| 1525 | sizeof(vub300->padded_buffer), |
| 1526 | &actual_length, 2000 + |
| 1527 | (sizeof(vub300->padded_buffer) / |
| 1528 | 16384)); |
| 1529 | if (result < 0) { |
| 1530 | cmd->error = result; |
| 1531 | data->bytes_xfered = 0; |
| 1532 | } else { |
| 1533 | data->bytes_xfered = vub300->datasize; |
| 1534 | } |
| 1535 | } else if ((!vub300->large_usb_packets && (0 < modulo_64_length)) || |
| 1536 | (vub300->large_usb_packets && (64 > modulo_512_length)) |
| 1537 | ) { /* don't you just love these work-rounds */ |
| 1538 | int padded_length = ((63 + linear_length) >> 6) << 6; |
| 1539 | u8 *buf = kmalloc(padded_length, GFP_KERNEL); |
| 1540 | if (buf) { |
| 1541 | int result; |
| 1542 | int actual_length; |
| 1543 | sg_copy_to_buffer(data->sg, data->sg_len, buf, |
| 1544 | padded_length); |
| 1545 | memset(buf + linear_length, 0, |
| 1546 | padded_length - linear_length); |
| 1547 | result = |
| 1548 | vub300_usb_bulk_msg(vub300, pipe, buf, |
| 1549 | padded_length, &actual_length, |
| 1550 | 2000 + padded_length / 16384); |
| 1551 | kfree(buf); |
| 1552 | if (result < 0) { |
| 1553 | cmd->error = result; |
| 1554 | data->bytes_xfered = 0; |
| 1555 | } else { |
| 1556 | data->bytes_xfered = vub300->datasize; |
| 1557 | } |
| 1558 | } else { |
| 1559 | cmd->error = -ENOMEM; |
| 1560 | data->bytes_xfered = 0; |
| 1561 | } |
| 1562 | } else { /* no data padding required */ |
| 1563 | int result; |
| 1564 | unsigned char buf[64 * 4]; |
| 1565 | sg_copy_to_buffer(data->sg, data->sg_len, buf, sizeof(buf)); |
| 1566 | result = usb_sg_init(&vub300->sg_request, vub300->udev, |
| 1567 | pipe, 0, data->sg, |
| 1568 | data->sg_len, 0, GFP_KERNEL); |
| 1569 | if (result < 0) { |
| 1570 | usb_unlink_urb(vub300->command_out_urb); |
| 1571 | usb_unlink_urb(vub300->command_res_urb); |
| 1572 | cmd->error = result; |
| 1573 | data->bytes_xfered = 0; |
| 1574 | } else { |
| 1575 | vub300->sg_transfer_timer.expires = |
| 1576 | jiffies + msecs_to_jiffies(2000 + |
| 1577 | linear_length / 16384); |
| 1578 | add_timer(&vub300->sg_transfer_timer); |
| 1579 | usb_sg_wait(&vub300->sg_request); |
| 1580 | if (cmd->error) { |
| 1581 | data->bytes_xfered = 0; |
| 1582 | } else { |
| 1583 | del_timer(&vub300->sg_transfer_timer); |
| 1584 | if (vub300->sg_request.status < 0) { |
| 1585 | cmd->error = vub300->sg_request.status; |
| 1586 | data->bytes_xfered = 0; |
| 1587 | } else { |
| 1588 | data->bytes_xfered = vub300->datasize; |
| 1589 | } |
| 1590 | } |
| 1591 | } |
| 1592 | } |
| 1593 | return linear_length; |
| 1594 | } |
| 1595 | |
| 1596 | static void __vub300_command_response(struct vub300_mmc_host *vub300, |
| 1597 | struct mmc_command *cmd, |
| 1598 | struct mmc_data *data, int data_length) |
| 1599 | { |
| 1600 | /* cmd_mutex is held by vub300_cmndwork_thread */ |
| 1601 | long respretval; |
| 1602 | int msec_timeout = 1000 + data_length / 4; |
| 1603 | respretval = |
| 1604 | wait_for_completion_timeout(&vub300->command_complete, |
| 1605 | msecs_to_jiffies(msec_timeout)); |
| 1606 | if (respretval == 0) { /* TIMED OUT */ |
| 1607 | /* we don't know which of "out" and "res" if any failed */ |
| 1608 | int result; |
| 1609 | vub300->usb_timed_out = 1; |
| 1610 | usb_kill_urb(vub300->command_out_urb); |
| 1611 | usb_kill_urb(vub300->command_res_urb); |
| 1612 | cmd->error = -ETIMEDOUT; |
| 1613 | result = usb_lock_device_for_reset(vub300->udev, |
| 1614 | vub300->interface); |
| 1615 | if (result == 0) { |
| 1616 | result = usb_reset_device(vub300->udev); |
| 1617 | usb_unlock_device(vub300->udev); |
| 1618 | } |
| 1619 | } else if (respretval < 0) { |
| 1620 | /* we don't know which of "out" and "res" if any failed */ |
| 1621 | usb_kill_urb(vub300->command_out_urb); |
| 1622 | usb_kill_urb(vub300->command_res_urb); |
| 1623 | cmd->error = respretval; |
| 1624 | } else if (cmd->error) { |
| 1625 | /* |
Joe Perches | dbc6221 | 2011-06-23 11:39:19 -0700 | [diff] [blame] | 1626 | * the error occurred sending the command |
| 1627 | * or receiving the response |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 1628 | */ |
| 1629 | } else if (vub300->command_out_urb->status) { |
| 1630 | vub300->usb_transport_fail = vub300->command_out_urb->status; |
| 1631 | cmd->error = -EPROTO == vub300->command_out_urb->status ? |
| 1632 | -ESHUTDOWN : vub300->command_out_urb->status; |
| 1633 | } else if (vub300->command_res_urb->status) { |
| 1634 | vub300->usb_transport_fail = vub300->command_res_urb->status; |
| 1635 | cmd->error = -EPROTO == vub300->command_res_urb->status ? |
| 1636 | -ESHUTDOWN : vub300->command_res_urb->status; |
| 1637 | } else if (vub300->resp.common.header_type == 0x00) { |
| 1638 | /* |
| 1639 | * the command completed successfully |
| 1640 | * and there was no piggybacked data |
| 1641 | */ |
| 1642 | } else if (vub300->resp.common.header_type == RESPONSE_ERROR) { |
| 1643 | cmd->error = |
| 1644 | vub300_response_error(vub300->resp.error.error_code); |
| 1645 | if (vub300->data) |
| 1646 | usb_sg_cancel(&vub300->sg_request); |
| 1647 | } else if (vub300->resp.common.header_type == RESPONSE_PIGGYBACKED) { |
| 1648 | int offloaded_data_length = |
| 1649 | vub300->resp.common.header_size - |
| 1650 | sizeof(struct sd_register_header); |
| 1651 | int register_count = offloaded_data_length >> 3; |
| 1652 | int ri = 0; |
| 1653 | while (register_count--) { |
| 1654 | add_offloaded_reg(vub300, &vub300->resp.pig.reg[ri]); |
| 1655 | ri += 1; |
| 1656 | } |
| 1657 | vub300->resp.common.header_size = |
| 1658 | sizeof(struct sd_register_header); |
| 1659 | vub300->resp.common.header_type = 0x00; |
| 1660 | cmd->error = 0; |
| 1661 | } else if (vub300->resp.common.header_type == RESPONSE_PIG_DISABLED) { |
| 1662 | int offloaded_data_length = |
| 1663 | vub300->resp.common.header_size - |
| 1664 | sizeof(struct sd_register_header); |
| 1665 | int register_count = offloaded_data_length >> 3; |
| 1666 | int ri = 0; |
| 1667 | while (register_count--) { |
| 1668 | add_offloaded_reg(vub300, &vub300->resp.pig.reg[ri]); |
| 1669 | ri += 1; |
| 1670 | } |
| 1671 | mutex_lock(&vub300->irq_mutex); |
| 1672 | if (vub300->irqs_queued) { |
| 1673 | vub300->irqs_queued += 1; |
| 1674 | } else if (vub300->irq_enabled) { |
| 1675 | vub300->irqs_queued += 1; |
| 1676 | vub300_queue_poll_work(vub300, 0); |
| 1677 | } else { |
| 1678 | vub300->irqs_queued += 1; |
| 1679 | } |
| 1680 | vub300->irq_disabled = 1; |
| 1681 | mutex_unlock(&vub300->irq_mutex); |
| 1682 | vub300->resp.common.header_size = |
| 1683 | sizeof(struct sd_register_header); |
| 1684 | vub300->resp.common.header_type = 0x00; |
| 1685 | cmd->error = 0; |
| 1686 | } else if (vub300->resp.common.header_type == RESPONSE_PIG_ENABLED) { |
| 1687 | int offloaded_data_length = |
| 1688 | vub300->resp.common.header_size - |
| 1689 | sizeof(struct sd_register_header); |
| 1690 | int register_count = offloaded_data_length >> 3; |
| 1691 | int ri = 0; |
| 1692 | while (register_count--) { |
| 1693 | add_offloaded_reg(vub300, &vub300->resp.pig.reg[ri]); |
| 1694 | ri += 1; |
| 1695 | } |
| 1696 | mutex_lock(&vub300->irq_mutex); |
| 1697 | if (vub300->irqs_queued) { |
| 1698 | vub300->irqs_queued += 1; |
| 1699 | } else if (vub300->irq_enabled) { |
| 1700 | vub300->irqs_queued += 1; |
| 1701 | vub300_queue_poll_work(vub300, 0); |
| 1702 | } else { |
| 1703 | vub300->irqs_queued += 1; |
| 1704 | } |
| 1705 | vub300->irq_disabled = 0; |
| 1706 | mutex_unlock(&vub300->irq_mutex); |
| 1707 | vub300->resp.common.header_size = |
| 1708 | sizeof(struct sd_register_header); |
| 1709 | vub300->resp.common.header_type = 0x00; |
| 1710 | cmd->error = 0; |
| 1711 | } else { |
| 1712 | cmd->error = -EINVAL; |
| 1713 | } |
| 1714 | } |
| 1715 | |
| 1716 | static void construct_request_response(struct vub300_mmc_host *vub300, |
| 1717 | struct mmc_command *cmd) |
| 1718 | { |
| 1719 | int resp_len = vub300->resp_len; |
| 1720 | int less_cmd = (17 == resp_len) ? resp_len : resp_len - 1; |
| 1721 | int bytes = 3 & less_cmd; |
| 1722 | int words = less_cmd >> 2; |
| 1723 | u8 *r = vub300->resp.response.command_response; |
| 1724 | if (bytes == 3) { |
| 1725 | cmd->resp[words] = (r[1 + (words << 2)] << 24) |
| 1726 | | (r[2 + (words << 2)] << 16) |
| 1727 | | (r[3 + (words << 2)] << 8); |
| 1728 | } else if (bytes == 2) { |
| 1729 | cmd->resp[words] = (r[1 + (words << 2)] << 24) |
| 1730 | | (r[2 + (words << 2)] << 16); |
| 1731 | } else if (bytes == 1) { |
| 1732 | cmd->resp[words] = (r[1 + (words << 2)] << 24); |
| 1733 | } |
| 1734 | while (words-- > 0) { |
| 1735 | cmd->resp[words] = (r[1 + (words << 2)] << 24) |
| 1736 | | (r[2 + (words << 2)] << 16) |
| 1737 | | (r[3 + (words << 2)] << 8) |
| 1738 | | (r[4 + (words << 2)] << 0); |
| 1739 | } |
| 1740 | if ((cmd->opcode == 53) && (0x000000FF & cmd->resp[0])) |
| 1741 | cmd->resp[0] &= 0xFFFFFF00; |
| 1742 | } |
| 1743 | |
| 1744 | /* this thread runs only when there is an upper level command req outstanding */ |
| 1745 | static void vub300_cmndwork_thread(struct work_struct *work) |
| 1746 | { |
| 1747 | struct vub300_mmc_host *vub300 = |
| 1748 | container_of(work, struct vub300_mmc_host, cmndwork); |
| 1749 | if (!vub300->interface) { |
| 1750 | kref_put(&vub300->kref, vub300_delete); |
| 1751 | return; |
| 1752 | } else { |
| 1753 | struct mmc_request *req = vub300->req; |
| 1754 | struct mmc_command *cmd = vub300->cmd; |
| 1755 | struct mmc_data *data = vub300->data; |
| 1756 | int data_length; |
| 1757 | mutex_lock(&vub300->cmd_mutex); |
| 1758 | init_completion(&vub300->command_complete); |
| 1759 | if (likely(vub300->vub_name[0]) || !vub300->mmc->card || |
| 1760 | !mmc_card_present(vub300->mmc->card)) { |
| 1761 | /* |
| 1762 | * the name of the EMPTY Pseudo firmware file |
| 1763 | * is used as a flag to indicate that the file |
| 1764 | * has been already downloaded to the VUB300 chip |
| 1765 | */ |
| 1766 | } else if (0 == vub300->mmc->card->sdio_funcs) { |
| 1767 | strncpy(vub300->vub_name, "SD memory device", |
| 1768 | sizeof(vub300->vub_name)); |
| 1769 | } else { |
| 1770 | download_offload_pseudocode(vub300); |
| 1771 | } |
| 1772 | send_command(vub300); |
| 1773 | if (!data) |
| 1774 | data_length = 0; |
| 1775 | else if (MMC_DATA_READ & data->flags) |
| 1776 | data_length = __command_read_data(vub300, cmd, data); |
| 1777 | else |
| 1778 | data_length = __command_write_data(vub300, cmd, data); |
| 1779 | __vub300_command_response(vub300, cmd, data, data_length); |
| 1780 | vub300->req = NULL; |
| 1781 | vub300->cmd = NULL; |
| 1782 | vub300->data = NULL; |
| 1783 | if (cmd->error) { |
| 1784 | if (cmd->error == -ENOMEDIUM) |
| 1785 | check_vub300_port_status(vub300); |
| 1786 | mutex_unlock(&vub300->cmd_mutex); |
| 1787 | mmc_request_done(vub300->mmc, req); |
| 1788 | kref_put(&vub300->kref, vub300_delete); |
| 1789 | return; |
| 1790 | } else { |
| 1791 | construct_request_response(vub300, cmd); |
| 1792 | vub300->resp_len = 0; |
| 1793 | mutex_unlock(&vub300->cmd_mutex); |
| 1794 | kref_put(&vub300->kref, vub300_delete); |
| 1795 | mmc_request_done(vub300->mmc, req); |
| 1796 | return; |
| 1797 | } |
| 1798 | } |
| 1799 | } |
| 1800 | |
| 1801 | static int examine_cyclic_buffer(struct vub300_mmc_host *vub300, |
| 1802 | struct mmc_command *cmd, u8 Function) |
| 1803 | { |
| 1804 | /* cmd_mutex is held by vub300_mmc_request */ |
| 1805 | u8 cmd0 = 0xFF & (cmd->arg >> 24); |
| 1806 | u8 cmd1 = 0xFF & (cmd->arg >> 16); |
| 1807 | u8 cmd2 = 0xFF & (cmd->arg >> 8); |
| 1808 | u8 cmd3 = 0xFF & (cmd->arg >> 0); |
| 1809 | int first = MAXREGMASK & vub300->fn[Function].offload_point; |
| 1810 | struct offload_registers_access *rf = &vub300->fn[Function].reg[first]; |
| 1811 | if (cmd0 == rf->command_byte[0] && |
| 1812 | cmd1 == rf->command_byte[1] && |
| 1813 | cmd2 == rf->command_byte[2] && |
| 1814 | cmd3 == rf->command_byte[3]) { |
| 1815 | u8 checksum = 0x00; |
| 1816 | cmd->resp[1] = checksum << 24; |
| 1817 | cmd->resp[0] = (rf->Respond_Byte[0] << 24) |
| 1818 | | (rf->Respond_Byte[1] << 16) |
| 1819 | | (rf->Respond_Byte[2] << 8) |
| 1820 | | (rf->Respond_Byte[3] << 0); |
| 1821 | vub300->fn[Function].offload_point += 1; |
| 1822 | vub300->fn[Function].offload_count -= 1; |
| 1823 | vub300->total_offload_count -= 1; |
| 1824 | return 1; |
| 1825 | } else { |
| 1826 | int delta = 1; /* because it does not match the first one */ |
| 1827 | u8 register_count = vub300->fn[Function].offload_count - 1; |
| 1828 | u32 register_point = vub300->fn[Function].offload_point + 1; |
| 1829 | while (0 < register_count) { |
| 1830 | int point = MAXREGMASK & register_point; |
| 1831 | struct offload_registers_access *r = |
| 1832 | &vub300->fn[Function].reg[point]; |
| 1833 | if (cmd0 == r->command_byte[0] && |
| 1834 | cmd1 == r->command_byte[1] && |
| 1835 | cmd2 == r->command_byte[2] && |
| 1836 | cmd3 == r->command_byte[3]) { |
| 1837 | u8 checksum = 0x00; |
| 1838 | cmd->resp[1] = checksum << 24; |
| 1839 | cmd->resp[0] = (r->Respond_Byte[0] << 24) |
| 1840 | | (r->Respond_Byte[1] << 16) |
| 1841 | | (r->Respond_Byte[2] << 8) |
| 1842 | | (r->Respond_Byte[3] << 0); |
| 1843 | vub300->fn[Function].offload_point += delta; |
| 1844 | vub300->fn[Function].offload_count -= delta; |
| 1845 | vub300->total_offload_count -= delta; |
| 1846 | return 1; |
| 1847 | } else { |
| 1848 | register_point += 1; |
| 1849 | register_count -= 1; |
| 1850 | delta += 1; |
| 1851 | continue; |
| 1852 | } |
| 1853 | } |
| 1854 | return 0; |
| 1855 | } |
| 1856 | } |
| 1857 | |
| 1858 | static int satisfy_request_from_offloaded_data(struct vub300_mmc_host *vub300, |
| 1859 | struct mmc_command *cmd) |
| 1860 | { |
| 1861 | /* cmd_mutex is held by vub300_mmc_request */ |
| 1862 | u8 regs = vub300->dynamic_register_count; |
| 1863 | u8 i = 0; |
| 1864 | u8 func = FUN(cmd); |
| 1865 | u32 reg = REG(cmd); |
| 1866 | while (0 < regs--) { |
| 1867 | if ((vub300->sdio_register[i].func_num == func) && |
| 1868 | (vub300->sdio_register[i].sdio_reg == reg)) { |
| 1869 | if (!vub300->sdio_register[i].prepared) { |
| 1870 | return 0; |
| 1871 | } else if ((0x80000000 & cmd->arg) == 0x80000000) { |
| 1872 | /* |
| 1873 | * a write to a dynamic register |
| 1874 | * nullifies our offloaded value |
| 1875 | */ |
| 1876 | vub300->sdio_register[i].prepared = 0; |
| 1877 | return 0; |
| 1878 | } else { |
| 1879 | u8 checksum = 0x00; |
| 1880 | u8 rsp0 = 0x00; |
| 1881 | u8 rsp1 = 0x00; |
| 1882 | u8 rsp2 = vub300->sdio_register[i].response; |
| 1883 | u8 rsp3 = vub300->sdio_register[i].regvalue; |
| 1884 | vub300->sdio_register[i].prepared = 0; |
| 1885 | cmd->resp[1] = checksum << 24; |
| 1886 | cmd->resp[0] = (rsp0 << 24) |
| 1887 | | (rsp1 << 16) |
| 1888 | | (rsp2 << 8) |
| 1889 | | (rsp3 << 0); |
| 1890 | return 1; |
| 1891 | } |
| 1892 | } else { |
| 1893 | i += 1; |
| 1894 | continue; |
| 1895 | } |
Javier Martinez Canillas | 7eece8d | 2015-09-16 11:30:04 +0200 | [diff] [blame] | 1896 | } |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 1897 | if (vub300->total_offload_count == 0) |
| 1898 | return 0; |
| 1899 | else if (vub300->fn[func].offload_count == 0) |
| 1900 | return 0; |
| 1901 | else |
| 1902 | return examine_cyclic_buffer(vub300, cmd, func); |
| 1903 | } |
| 1904 | |
| 1905 | static void vub300_mmc_request(struct mmc_host *mmc, struct mmc_request *req) |
| 1906 | { /* NOT irq */ |
| 1907 | struct mmc_command *cmd = req->cmd; |
| 1908 | struct vub300_mmc_host *vub300 = mmc_priv(mmc); |
| 1909 | if (!vub300->interface) { |
| 1910 | cmd->error = -ESHUTDOWN; |
| 1911 | mmc_request_done(mmc, req); |
| 1912 | return; |
| 1913 | } else { |
| 1914 | struct mmc_data *data = req->data; |
| 1915 | if (!vub300->card_powered) { |
| 1916 | cmd->error = -ENOMEDIUM; |
| 1917 | mmc_request_done(mmc, req); |
| 1918 | return; |
| 1919 | } |
| 1920 | if (!vub300->card_present) { |
| 1921 | cmd->error = -ENOMEDIUM; |
| 1922 | mmc_request_done(mmc, req); |
| 1923 | return; |
| 1924 | } |
| 1925 | if (vub300->usb_transport_fail) { |
| 1926 | cmd->error = vub300->usb_transport_fail; |
| 1927 | mmc_request_done(mmc, req); |
| 1928 | return; |
| 1929 | } |
| 1930 | if (!vub300->interface) { |
| 1931 | cmd->error = -ENODEV; |
| 1932 | mmc_request_done(mmc, req); |
| 1933 | return; |
| 1934 | } |
| 1935 | kref_get(&vub300->kref); |
| 1936 | mutex_lock(&vub300->cmd_mutex); |
| 1937 | mod_timer(&vub300->inactivity_timer, jiffies + HZ); |
| 1938 | /* |
| 1939 | * for performance we have to return immediately |
| 1940 | * if the requested data has been offloaded |
| 1941 | */ |
| 1942 | if (cmd->opcode == 52 && |
| 1943 | satisfy_request_from_offloaded_data(vub300, cmd)) { |
| 1944 | cmd->error = 0; |
| 1945 | mutex_unlock(&vub300->cmd_mutex); |
| 1946 | kref_put(&vub300->kref, vub300_delete); |
| 1947 | mmc_request_done(mmc, req); |
| 1948 | return; |
| 1949 | } else { |
| 1950 | vub300->cmd = cmd; |
| 1951 | vub300->req = req; |
| 1952 | vub300->data = data; |
| 1953 | if (data) |
| 1954 | vub300->datasize = data->blksz * data->blocks; |
| 1955 | else |
| 1956 | vub300->datasize = 0; |
| 1957 | vub300_queue_cmnd_work(vub300); |
| 1958 | mutex_unlock(&vub300->cmd_mutex); |
| 1959 | kref_put(&vub300->kref, vub300_delete); |
| 1960 | /* |
| 1961 | * the kernel lock diagnostics complain |
| 1962 | * if the cmd_mutex * is "passed on" |
| 1963 | * to the cmndwork thread, |
| 1964 | * so we must release it now |
| 1965 | * and re-acquire it in the cmndwork thread |
| 1966 | */ |
| 1967 | } |
| 1968 | } |
| 1969 | } |
| 1970 | |
| 1971 | static void __set_clock_speed(struct vub300_mmc_host *vub300, u8 buf[8], |
| 1972 | struct mmc_ios *ios) |
| 1973 | { |
| 1974 | int buf_array_size = 8; /* ARRAY_SIZE(buf) does not work !!! */ |
| 1975 | int retval; |
| 1976 | u32 kHzClock; |
| 1977 | if (ios->clock >= 48000000) |
| 1978 | kHzClock = 48000; |
| 1979 | else if (ios->clock >= 24000000) |
| 1980 | kHzClock = 24000; |
| 1981 | else if (ios->clock >= 20000000) |
| 1982 | kHzClock = 20000; |
| 1983 | else if (ios->clock >= 15000000) |
| 1984 | kHzClock = 15000; |
| 1985 | else if (ios->clock >= 200000) |
| 1986 | kHzClock = 200; |
| 1987 | else |
| 1988 | kHzClock = 0; |
| 1989 | { |
| 1990 | int i; |
| 1991 | u64 c = kHzClock; |
| 1992 | for (i = 0; i < buf_array_size; i++) { |
| 1993 | buf[i] = c; |
| 1994 | c >>= 8; |
| 1995 | } |
| 1996 | } |
| 1997 | retval = |
| 1998 | usb_control_msg(vub300->udev, usb_sndctrlpipe(vub300->udev, 0), |
| 1999 | SET_CLOCK_SPEED, |
| 2000 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 2001 | 0x00, 0x00, buf, buf_array_size, HZ); |
| 2002 | if (retval != 8) { |
| 2003 | dev_err(&vub300->udev->dev, "SET_CLOCK_SPEED" |
| 2004 | " %dkHz failed with retval=%d\n", kHzClock, retval); |
| 2005 | } else { |
| 2006 | dev_dbg(&vub300->udev->dev, "SET_CLOCK_SPEED" |
| 2007 | " %dkHz\n", kHzClock); |
| 2008 | } |
| 2009 | } |
| 2010 | |
| 2011 | static void vub300_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) |
| 2012 | { /* NOT irq */ |
| 2013 | struct vub300_mmc_host *vub300 = mmc_priv(mmc); |
| 2014 | if (!vub300->interface) |
| 2015 | return; |
| 2016 | kref_get(&vub300->kref); |
| 2017 | mutex_lock(&vub300->cmd_mutex); |
| 2018 | if ((ios->power_mode == MMC_POWER_OFF) && vub300->card_powered) { |
| 2019 | vub300->card_powered = 0; |
| 2020 | usb_control_msg(vub300->udev, usb_sndctrlpipe(vub300->udev, 0), |
| 2021 | SET_SD_POWER, |
| 2022 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 2023 | 0x0000, 0x0000, NULL, 0, HZ); |
| 2024 | /* must wait for the VUB300 u-proc to boot up */ |
| 2025 | msleep(600); |
| 2026 | } else if ((ios->power_mode == MMC_POWER_UP) && !vub300->card_powered) { |
| 2027 | usb_control_msg(vub300->udev, usb_sndctrlpipe(vub300->udev, 0), |
| 2028 | SET_SD_POWER, |
| 2029 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 2030 | 0x0001, 0x0000, NULL, 0, HZ); |
| 2031 | msleep(600); |
| 2032 | vub300->card_powered = 1; |
| 2033 | } else if (ios->power_mode == MMC_POWER_ON) { |
| 2034 | u8 *buf = kmalloc(8, GFP_KERNEL); |
| 2035 | if (buf) { |
| 2036 | __set_clock_speed(vub300, buf, ios); |
| 2037 | kfree(buf); |
| 2038 | } |
| 2039 | } else { |
| 2040 | /* this should mean no change of state */ |
| 2041 | } |
| 2042 | mutex_unlock(&vub300->cmd_mutex); |
| 2043 | kref_put(&vub300->kref, vub300_delete); |
| 2044 | } |
| 2045 | |
| 2046 | static int vub300_mmc_get_ro(struct mmc_host *mmc) |
| 2047 | { |
| 2048 | struct vub300_mmc_host *vub300 = mmc_priv(mmc); |
| 2049 | return vub300->read_only; |
| 2050 | } |
| 2051 | |
| 2052 | static void vub300_enable_sdio_irq(struct mmc_host *mmc, int enable) |
| 2053 | { /* NOT irq */ |
| 2054 | struct vub300_mmc_host *vub300 = mmc_priv(mmc); |
| 2055 | if (!vub300->interface) |
| 2056 | return; |
| 2057 | kref_get(&vub300->kref); |
| 2058 | if (enable) { |
| 2059 | mutex_lock(&vub300->irq_mutex); |
| 2060 | if (vub300->irqs_queued) { |
| 2061 | vub300->irqs_queued -= 1; |
| 2062 | mmc_signal_sdio_irq(vub300->mmc); |
| 2063 | } else if (vub300->irq_disabled) { |
| 2064 | vub300->irq_disabled = 0; |
| 2065 | vub300->irq_enabled = 1; |
| 2066 | vub300_queue_poll_work(vub300, 0); |
| 2067 | } else if (vub300->irq_enabled) { |
| 2068 | /* this should not happen, so we will just ignore it */ |
| 2069 | } else { |
| 2070 | vub300->irq_enabled = 1; |
| 2071 | vub300_queue_poll_work(vub300, 0); |
| 2072 | } |
| 2073 | mutex_unlock(&vub300->irq_mutex); |
| 2074 | } else { |
| 2075 | vub300->irq_enabled = 0; |
| 2076 | } |
| 2077 | kref_put(&vub300->kref, vub300_delete); |
| 2078 | } |
| 2079 | |
Sachin Kamat | 37c955a | 2013-06-26 12:02:30 +0530 | [diff] [blame] | 2080 | static void vub300_init_card(struct mmc_host *mmc, struct mmc_card *card) |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 2081 | { /* NOT irq */ |
| 2082 | struct vub300_mmc_host *vub300 = mmc_priv(mmc); |
| 2083 | dev_info(&vub300->udev->dev, "NO host QUIRKS for this card\n"); |
| 2084 | } |
| 2085 | |
| 2086 | static struct mmc_host_ops vub300_mmc_ops = { |
| 2087 | .request = vub300_mmc_request, |
| 2088 | .set_ios = vub300_mmc_set_ios, |
| 2089 | .get_ro = vub300_mmc_get_ro, |
| 2090 | .enable_sdio_irq = vub300_enable_sdio_irq, |
| 2091 | .init_card = vub300_init_card, |
| 2092 | }; |
| 2093 | |
| 2094 | static int vub300_probe(struct usb_interface *interface, |
| 2095 | const struct usb_device_id *id) |
| 2096 | { /* NOT irq */ |
Chris Ball | c44048d | 2011-05-26 23:15:49 -0400 | [diff] [blame] | 2097 | struct vub300_mmc_host *vub300; |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 2098 | struct usb_host_interface *iface_desc; |
| 2099 | struct usb_device *udev = usb_get_dev(interface_to_usbdev(interface)); |
| 2100 | int i; |
| 2101 | int retval = -ENOMEM; |
| 2102 | struct urb *command_out_urb; |
| 2103 | struct urb *command_res_urb; |
| 2104 | struct mmc_host *mmc; |
| 2105 | char manufacturer[48]; |
| 2106 | char product[32]; |
| 2107 | char serial_number[32]; |
| 2108 | usb_string(udev, udev->descriptor.iManufacturer, manufacturer, |
| 2109 | sizeof(manufacturer)); |
| 2110 | usb_string(udev, udev->descriptor.iProduct, product, sizeof(product)); |
| 2111 | usb_string(udev, udev->descriptor.iSerialNumber, serial_number, |
| 2112 | sizeof(serial_number)); |
| 2113 | dev_info(&udev->dev, "probing VID:PID(%04X:%04X) %s %s %s\n", |
| 2114 | udev->descriptor.idVendor, udev->descriptor.idProduct, |
| 2115 | manufacturer, product, serial_number); |
| 2116 | command_out_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 2117 | if (!command_out_urb) { |
| 2118 | retval = -ENOMEM; |
Chris Ball | c44048d | 2011-05-26 23:15:49 -0400 | [diff] [blame] | 2119 | dev_err(&udev->dev, "not enough memory for command_out_urb\n"); |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 2120 | goto error0; |
| 2121 | } |
| 2122 | command_res_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 2123 | if (!command_res_urb) { |
| 2124 | retval = -ENOMEM; |
Chris Ball | c44048d | 2011-05-26 23:15:49 -0400 | [diff] [blame] | 2125 | dev_err(&udev->dev, "not enough memory for command_res_urb\n"); |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 2126 | goto error1; |
| 2127 | } |
| 2128 | /* this also allocates memory for our VUB300 mmc host device */ |
| 2129 | mmc = mmc_alloc_host(sizeof(struct vub300_mmc_host), &udev->dev); |
| 2130 | if (!mmc) { |
| 2131 | retval = -ENOMEM; |
Chris Ball | c44048d | 2011-05-26 23:15:49 -0400 | [diff] [blame] | 2132 | dev_err(&udev->dev, "not enough memory for the mmc_host\n"); |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 2133 | goto error4; |
| 2134 | } |
| 2135 | /* MMC core transfer sizes tunable parameters */ |
| 2136 | mmc->caps = 0; |
| 2137 | if (!force_1_bit_data_xfers) |
| 2138 | mmc->caps |= MMC_CAP_4_BIT_DATA; |
| 2139 | if (!force_polling_for_irqs) |
| 2140 | mmc->caps |= MMC_CAP_SDIO_IRQ; |
| 2141 | mmc->caps &= ~MMC_CAP_NEEDS_POLL; |
| 2142 | /* |
| 2143 | * MMC_CAP_NEEDS_POLL causes core.c:mmc_rescan() to poll |
| 2144 | * for devices which results in spurious CMD7's being |
| 2145 | * issued which stops some SDIO cards from working |
| 2146 | */ |
| 2147 | if (limit_speed_to_24_MHz) { |
| 2148 | mmc->caps |= MMC_CAP_MMC_HIGHSPEED; |
| 2149 | mmc->caps |= MMC_CAP_SD_HIGHSPEED; |
| 2150 | mmc->f_max = 24000000; |
| 2151 | dev_info(&udev->dev, "limiting SDIO speed to 24_MHz\n"); |
| 2152 | } else { |
| 2153 | mmc->caps |= MMC_CAP_MMC_HIGHSPEED; |
| 2154 | mmc->caps |= MMC_CAP_SD_HIGHSPEED; |
| 2155 | mmc->f_max = 48000000; |
| 2156 | } |
| 2157 | mmc->f_min = 200000; |
| 2158 | mmc->max_blk_count = 511; |
| 2159 | mmc->max_blk_size = 512; |
| 2160 | mmc->max_segs = 128; |
| 2161 | if (force_max_req_size) |
| 2162 | mmc->max_req_size = force_max_req_size * 1024; |
| 2163 | else |
| 2164 | mmc->max_req_size = 64 * 1024; |
| 2165 | mmc->max_seg_size = mmc->max_req_size; |
| 2166 | mmc->ocr_avail = 0; |
| 2167 | mmc->ocr_avail |= MMC_VDD_165_195; |
| 2168 | mmc->ocr_avail |= MMC_VDD_20_21; |
| 2169 | mmc->ocr_avail |= MMC_VDD_21_22; |
| 2170 | mmc->ocr_avail |= MMC_VDD_22_23; |
| 2171 | mmc->ocr_avail |= MMC_VDD_23_24; |
| 2172 | mmc->ocr_avail |= MMC_VDD_24_25; |
| 2173 | mmc->ocr_avail |= MMC_VDD_25_26; |
| 2174 | mmc->ocr_avail |= MMC_VDD_26_27; |
| 2175 | mmc->ocr_avail |= MMC_VDD_27_28; |
| 2176 | mmc->ocr_avail |= MMC_VDD_28_29; |
| 2177 | mmc->ocr_avail |= MMC_VDD_29_30; |
| 2178 | mmc->ocr_avail |= MMC_VDD_30_31; |
| 2179 | mmc->ocr_avail |= MMC_VDD_31_32; |
| 2180 | mmc->ocr_avail |= MMC_VDD_32_33; |
| 2181 | mmc->ocr_avail |= MMC_VDD_33_34; |
| 2182 | mmc->ocr_avail |= MMC_VDD_34_35; |
| 2183 | mmc->ocr_avail |= MMC_VDD_35_36; |
| 2184 | mmc->ops = &vub300_mmc_ops; |
| 2185 | vub300 = mmc_priv(mmc); |
| 2186 | vub300->mmc = mmc; |
| 2187 | vub300->card_powered = 0; |
| 2188 | vub300->bus_width = 0; |
| 2189 | vub300->cmnd.head.block_size[0] = 0x00; |
| 2190 | vub300->cmnd.head.block_size[1] = 0x00; |
| 2191 | vub300->app_spec = 0; |
| 2192 | mutex_init(&vub300->cmd_mutex); |
| 2193 | mutex_init(&vub300->irq_mutex); |
| 2194 | vub300->command_out_urb = command_out_urb; |
| 2195 | vub300->command_res_urb = command_res_urb; |
| 2196 | vub300->usb_timed_out = 0; |
| 2197 | vub300->dynamic_register_count = 0; |
| 2198 | |
| 2199 | for (i = 0; i < ARRAY_SIZE(vub300->fn); i++) { |
| 2200 | vub300->fn[i].offload_point = 0; |
| 2201 | vub300->fn[i].offload_count = 0; |
| 2202 | } |
| 2203 | |
| 2204 | vub300->total_offload_count = 0; |
| 2205 | vub300->irq_enabled = 0; |
| 2206 | vub300->irq_disabled = 0; |
| 2207 | vub300->irqs_queued = 0; |
| 2208 | |
| 2209 | for (i = 0; i < ARRAY_SIZE(vub300->sdio_register); i++) |
| 2210 | vub300->sdio_register[i++].activate = 0; |
| 2211 | |
| 2212 | vub300->udev = udev; |
| 2213 | vub300->interface = interface; |
| 2214 | vub300->cmnd_res_ep = 0; |
| 2215 | vub300->cmnd_out_ep = 0; |
| 2216 | vub300->data_inp_ep = 0; |
| 2217 | vub300->data_out_ep = 0; |
| 2218 | |
| 2219 | for (i = 0; i < ARRAY_SIZE(vub300->fbs); i++) |
| 2220 | vub300->fbs[i] = 512; |
| 2221 | |
| 2222 | /* |
| 2223 | * set up the endpoint information |
| 2224 | * |
| 2225 | * use the first pair of bulk-in and bulk-out |
| 2226 | * endpoints for Command/Response+Interrupt |
| 2227 | * |
| 2228 | * use the second pair of bulk-in and bulk-out |
| 2229 | * endpoints for Data In/Out |
| 2230 | */ |
| 2231 | vub300->large_usb_packets = 0; |
| 2232 | iface_desc = interface->cur_altsetting; |
| 2233 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { |
| 2234 | struct usb_endpoint_descriptor *endpoint = |
| 2235 | &iface_desc->endpoint[i].desc; |
| 2236 | dev_info(&vub300->udev->dev, |
| 2237 | "vub300 testing %s EndPoint(%d) %02X\n", |
| 2238 | usb_endpoint_is_bulk_in(endpoint) ? "BULK IN" : |
| 2239 | usb_endpoint_is_bulk_out(endpoint) ? "BULK OUT" : |
| 2240 | "UNKNOWN", i, endpoint->bEndpointAddress); |
| 2241 | if (endpoint->wMaxPacketSize > 64) |
| 2242 | vub300->large_usb_packets = 1; |
| 2243 | if (usb_endpoint_is_bulk_in(endpoint)) { |
| 2244 | if (!vub300->cmnd_res_ep) { |
| 2245 | vub300->cmnd_res_ep = |
| 2246 | endpoint->bEndpointAddress; |
| 2247 | } else if (!vub300->data_inp_ep) { |
| 2248 | vub300->data_inp_ep = |
| 2249 | endpoint->bEndpointAddress; |
| 2250 | } else { |
| 2251 | dev_warn(&vub300->udev->dev, |
| 2252 | "ignoring" |
| 2253 | " unexpected bulk_in endpoint"); |
| 2254 | } |
| 2255 | } else if (usb_endpoint_is_bulk_out(endpoint)) { |
| 2256 | if (!vub300->cmnd_out_ep) { |
| 2257 | vub300->cmnd_out_ep = |
| 2258 | endpoint->bEndpointAddress; |
| 2259 | } else if (!vub300->data_out_ep) { |
| 2260 | vub300->data_out_ep = |
| 2261 | endpoint->bEndpointAddress; |
| 2262 | } else { |
| 2263 | dev_warn(&vub300->udev->dev, |
| 2264 | "ignoring" |
| 2265 | " unexpected bulk_out endpoint"); |
| 2266 | } |
| 2267 | } else { |
| 2268 | dev_warn(&vub300->udev->dev, |
| 2269 | "vub300 ignoring EndPoint(%d) %02X", i, |
| 2270 | endpoint->bEndpointAddress); |
| 2271 | } |
| 2272 | } |
| 2273 | if (vub300->cmnd_res_ep && vub300->cmnd_out_ep && |
| 2274 | vub300->data_inp_ep && vub300->data_out_ep) { |
| 2275 | dev_info(&vub300->udev->dev, |
| 2276 | "vub300 %s packets" |
| 2277 | " using EndPoints %02X %02X %02X %02X\n", |
| 2278 | vub300->large_usb_packets ? "LARGE" : "SMALL", |
| 2279 | vub300->cmnd_out_ep, vub300->cmnd_res_ep, |
| 2280 | vub300->data_out_ep, vub300->data_inp_ep); |
| 2281 | /* we have the expected EndPoints */ |
| 2282 | } else { |
| 2283 | dev_err(&vub300->udev->dev, |
| 2284 | "Could not find two sets of bulk-in/out endpoint pairs\n"); |
| 2285 | retval = -EINVAL; |
| 2286 | goto error5; |
| 2287 | } |
| 2288 | retval = |
| 2289 | usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0), |
| 2290 | GET_HC_INF0, |
| 2291 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 2292 | 0x0000, 0x0000, &vub300->hc_info, |
| 2293 | sizeof(vub300->hc_info), HZ); |
| 2294 | if (retval < 0) |
| 2295 | goto error5; |
| 2296 | retval = |
| 2297 | usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0), |
| 2298 | SET_ROM_WAIT_STATES, |
| 2299 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 2300 | firmware_rom_wait_states, 0x0000, NULL, 0, HZ); |
| 2301 | if (retval < 0) |
| 2302 | goto error5; |
| 2303 | dev_info(&vub300->udev->dev, |
| 2304 | "operating_mode = %s %s %d MHz %s %d byte USB packets\n", |
| 2305 | (mmc->caps & MMC_CAP_SDIO_IRQ) ? "IRQs" : "POLL", |
| 2306 | (mmc->caps & MMC_CAP_4_BIT_DATA) ? "4-bit" : "1-bit", |
| 2307 | mmc->f_max / 1000000, |
| 2308 | pad_input_to_usb_pkt ? "padding input data to" : "with", |
| 2309 | vub300->large_usb_packets ? 512 : 64); |
| 2310 | retval = |
| 2311 | usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0), |
| 2312 | GET_SYSTEM_PORT_STATUS, |
| 2313 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 2314 | 0x0000, 0x0000, &vub300->system_port_status, |
| 2315 | sizeof(vub300->system_port_status), HZ); |
| 2316 | if (retval < 0) { |
| 2317 | goto error4; |
| 2318 | } else if (sizeof(vub300->system_port_status) == retval) { |
| 2319 | vub300->card_present = |
| 2320 | (0x0001 & vub300->system_port_status.port_flags) ? 1 : 0; |
| 2321 | vub300->read_only = |
| 2322 | (0x0010 & vub300->system_port_status.port_flags) ? 1 : 0; |
| 2323 | } else { |
| 2324 | goto error4; |
| 2325 | } |
| 2326 | usb_set_intfdata(interface, vub300); |
| 2327 | INIT_DELAYED_WORK(&vub300->pollwork, vub300_pollwork_thread); |
| 2328 | INIT_WORK(&vub300->cmndwork, vub300_cmndwork_thread); |
| 2329 | INIT_WORK(&vub300->deadwork, vub300_deadwork_thread); |
| 2330 | kref_init(&vub300->kref); |
| 2331 | init_timer(&vub300->sg_transfer_timer); |
| 2332 | vub300->sg_transfer_timer.data = (unsigned long)vub300; |
| 2333 | vub300->sg_transfer_timer.function = vub300_sg_timed_out; |
| 2334 | kref_get(&vub300->kref); |
| 2335 | init_timer(&vub300->inactivity_timer); |
| 2336 | vub300->inactivity_timer.data = (unsigned long)vub300; |
| 2337 | vub300->inactivity_timer.function = vub300_inactivity_timer_expired; |
| 2338 | vub300->inactivity_timer.expires = jiffies + HZ; |
| 2339 | add_timer(&vub300->inactivity_timer); |
| 2340 | if (vub300->card_present) |
| 2341 | dev_info(&vub300->udev->dev, |
| 2342 | "USB vub300 remote SDIO host controller[%d]" |
| 2343 | "connected with SD/SDIO card inserted\n", |
| 2344 | interface_to_InterfaceNumber(interface)); |
| 2345 | else |
| 2346 | dev_info(&vub300->udev->dev, |
| 2347 | "USB vub300 remote SDIO host controller[%d]" |
| 2348 | "connected with no SD/SDIO card inserted\n", |
| 2349 | interface_to_InterfaceNumber(interface)); |
| 2350 | mmc_add_host(mmc); |
| 2351 | return 0; |
| 2352 | error5: |
| 2353 | mmc_free_host(mmc); |
| 2354 | /* |
| 2355 | * and hence also frees vub300 |
| 2356 | * which is contained at the end of struct mmc |
| 2357 | */ |
| 2358 | error4: |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 2359 | usb_free_urb(command_res_urb); |
Julia Lawall | 5fdb450 | 2012-07-24 17:06:10 +0200 | [diff] [blame] | 2360 | error1: |
| 2361 | usb_free_urb(command_out_urb); |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 2362 | error0: |
Marina Makienko | 063f96c | 2012-11-27 10:46:57 +0400 | [diff] [blame] | 2363 | usb_put_dev(udev); |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 2364 | return retval; |
| 2365 | } |
| 2366 | |
| 2367 | static void vub300_disconnect(struct usb_interface *interface) |
| 2368 | { /* NOT irq */ |
| 2369 | struct vub300_mmc_host *vub300 = usb_get_intfdata(interface); |
| 2370 | if (!vub300 || !vub300->mmc) { |
| 2371 | return; |
| 2372 | } else { |
| 2373 | struct mmc_host *mmc = vub300->mmc; |
| 2374 | if (!vub300->mmc) { |
| 2375 | return; |
| 2376 | } else { |
| 2377 | int ifnum = interface_to_InterfaceNumber(interface); |
| 2378 | usb_set_intfdata(interface, NULL); |
| 2379 | /* prevent more I/O from starting */ |
| 2380 | vub300->interface = NULL; |
| 2381 | kref_put(&vub300->kref, vub300_delete); |
| 2382 | mmc_remove_host(mmc); |
| 2383 | pr_info("USB vub300 remote SDIO host controller[%d]" |
| 2384 | " now disconnected", ifnum); |
| 2385 | return; |
| 2386 | } |
| 2387 | } |
| 2388 | } |
| 2389 | |
| 2390 | #ifdef CONFIG_PM |
| 2391 | static int vub300_suspend(struct usb_interface *intf, pm_message_t message) |
| 2392 | { |
Ulf Hansson | 990b299 | 2013-09-25 14:07:06 +0200 | [diff] [blame] | 2393 | return 0; |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 2394 | } |
| 2395 | |
| 2396 | static int vub300_resume(struct usb_interface *intf) |
| 2397 | { |
Ulf Hansson | 990b299 | 2013-09-25 14:07:06 +0200 | [diff] [blame] | 2398 | return 0; |
Tony Olech | 88095e7 | 2011-05-14 16:48:13 -0400 | [diff] [blame] | 2399 | } |
| 2400 | #else |
| 2401 | #define vub300_suspend NULL |
| 2402 | #define vub300_resume NULL |
| 2403 | #endif |
| 2404 | static int vub300_pre_reset(struct usb_interface *intf) |
| 2405 | { /* NOT irq */ |
| 2406 | struct vub300_mmc_host *vub300 = usb_get_intfdata(intf); |
| 2407 | mutex_lock(&vub300->cmd_mutex); |
| 2408 | return 0; |
| 2409 | } |
| 2410 | |
| 2411 | static int vub300_post_reset(struct usb_interface *intf) |
| 2412 | { /* NOT irq */ |
| 2413 | struct vub300_mmc_host *vub300 = usb_get_intfdata(intf); |
| 2414 | /* we are sure no URBs are active - no locking needed */ |
| 2415 | vub300->errors = -EPIPE; |
| 2416 | mutex_unlock(&vub300->cmd_mutex); |
| 2417 | return 0; |
| 2418 | } |
| 2419 | |
| 2420 | static struct usb_driver vub300_driver = { |
| 2421 | .name = "vub300", |
| 2422 | .probe = vub300_probe, |
| 2423 | .disconnect = vub300_disconnect, |
| 2424 | .suspend = vub300_suspend, |
| 2425 | .resume = vub300_resume, |
| 2426 | .pre_reset = vub300_pre_reset, |
| 2427 | .post_reset = vub300_post_reset, |
| 2428 | .id_table = vub300_table, |
| 2429 | .supports_autosuspend = 1, |
| 2430 | }; |
| 2431 | |
| 2432 | static int __init vub300_init(void) |
| 2433 | { /* NOT irq */ |
| 2434 | int result; |
| 2435 | |
| 2436 | pr_info("VUB300 Driver rom wait states = %02X irqpoll timeout = %04X", |
| 2437 | firmware_rom_wait_states, 0x0FFFF & firmware_irqpoll_timeout); |
| 2438 | cmndworkqueue = create_singlethread_workqueue("kvub300c"); |
| 2439 | if (!cmndworkqueue) { |
| 2440 | pr_err("not enough memory for the REQUEST workqueue"); |
| 2441 | result = -ENOMEM; |
| 2442 | goto out1; |
| 2443 | } |
| 2444 | pollworkqueue = create_singlethread_workqueue("kvub300p"); |
| 2445 | if (!pollworkqueue) { |
| 2446 | pr_err("not enough memory for the IRQPOLL workqueue"); |
| 2447 | result = -ENOMEM; |
| 2448 | goto out2; |
| 2449 | } |
| 2450 | deadworkqueue = create_singlethread_workqueue("kvub300d"); |
| 2451 | if (!deadworkqueue) { |
| 2452 | pr_err("not enough memory for the EXPIRED workqueue"); |
| 2453 | result = -ENOMEM; |
| 2454 | goto out3; |
| 2455 | } |
| 2456 | result = usb_register(&vub300_driver); |
| 2457 | if (result) { |
| 2458 | pr_err("usb_register failed. Error number %d", result); |
| 2459 | goto out4; |
| 2460 | } |
| 2461 | return 0; |
| 2462 | out4: |
| 2463 | destroy_workqueue(deadworkqueue); |
| 2464 | out3: |
| 2465 | destroy_workqueue(pollworkqueue); |
| 2466 | out2: |
| 2467 | destroy_workqueue(cmndworkqueue); |
| 2468 | out1: |
| 2469 | return result; |
| 2470 | } |
| 2471 | |
| 2472 | static void __exit vub300_exit(void) |
| 2473 | { |
| 2474 | usb_deregister(&vub300_driver); |
| 2475 | flush_workqueue(cmndworkqueue); |
| 2476 | flush_workqueue(pollworkqueue); |
| 2477 | flush_workqueue(deadworkqueue); |
| 2478 | destroy_workqueue(cmndworkqueue); |
| 2479 | destroy_workqueue(pollworkqueue); |
| 2480 | destroy_workqueue(deadworkqueue); |
| 2481 | } |
| 2482 | |
| 2483 | module_init(vub300_init); |
| 2484 | module_exit(vub300_exit); |
| 2485 | |
| 2486 | MODULE_AUTHOR("Tony Olech <tony.olech@elandigitalsystems.com>"); |
| 2487 | MODULE_DESCRIPTION("VUB300 USB to SD/MMC/SDIO adapter driver"); |
| 2488 | MODULE_LICENSE("GPL"); |