wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 1 | /* Driver for Realtek PCI-Express card reader |
| 2 | * |
| 3 | * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License as published by the |
| 7 | * Free Software Foundation; either version 2, or (at your option) any |
| 8 | * later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, but |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | * General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; if not, see <http://www.gnu.org/licenses/>. |
| 17 | * |
| 18 | * Author: |
| 19 | * wwang (wei_wang@realsil.com.cn) |
| 20 | * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China |
| 21 | */ |
| 22 | |
| 23 | #include <linux/blkdev.h> |
| 24 | #include <linux/kthread.h> |
| 25 | #include <linux/sched.h> |
| 26 | #include <linux/workqueue.h> |
| 27 | |
| 28 | #include "rtsx.h" |
| 29 | #include "rtsx_chip.h" |
| 30 | #include "rtsx_transport.h" |
| 31 | #include "rtsx_scsi.h" |
| 32 | #include "rtsx_card.h" |
| 33 | #include "general.h" |
| 34 | |
| 35 | #include "ms.h" |
| 36 | #include "sd.h" |
| 37 | #include "xd.h" |
| 38 | |
| 39 | #define DRIVER_VERSION "v1.10" |
| 40 | |
| 41 | MODULE_DESCRIPTION("Realtek PCI-Express card reader driver"); |
| 42 | MODULE_LICENSE("GPL"); |
| 43 | MODULE_VERSION(DRIVER_VERSION); |
| 44 | |
| 45 | static unsigned int delay_use = 1; |
| 46 | module_param(delay_use, uint, S_IRUGO | S_IWUSR); |
| 47 | MODULE_PARM_DESC(delay_use, "seconds to delay before using a new device"); |
| 48 | |
| 49 | static int ss_en; |
| 50 | module_param(ss_en, int, S_IRUGO | S_IWUSR); |
| 51 | MODULE_PARM_DESC(ss_en, "enable selective suspend"); |
| 52 | |
| 53 | static int ss_interval = 50; |
| 54 | module_param(ss_interval, int, S_IRUGO | S_IWUSR); |
| 55 | MODULE_PARM_DESC(ss_interval, "Interval to enter ss state in seconds"); |
| 56 | |
| 57 | static int auto_delink_en; |
| 58 | module_param(auto_delink_en, int, S_IRUGO | S_IWUSR); |
| 59 | MODULE_PARM_DESC(auto_delink_en, "enable auto delink"); |
| 60 | |
| 61 | static unsigned char aspm_l0s_l1_en; |
| 62 | module_param(aspm_l0s_l1_en, byte, S_IRUGO | S_IWUSR); |
| 63 | MODULE_PARM_DESC(aspm_l0s_l1_en, "enable device aspm"); |
| 64 | |
| 65 | static int msi_en; |
| 66 | module_param(msi_en, int, S_IRUGO | S_IWUSR); |
| 67 | MODULE_PARM_DESC(msi_en, "enable msi"); |
| 68 | |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 69 | static irqreturn_t rtsx_interrupt(int irq, void *dev_id); |
| 70 | |
| 71 | /*********************************************************************** |
| 72 | * Host functions |
| 73 | ***********************************************************************/ |
| 74 | |
| 75 | static const char *host_info(struct Scsi_Host *host) |
| 76 | { |
| 77 | return "SCSI emulation for PCI-Express Mass Storage devices"; |
| 78 | } |
| 79 | |
| 80 | static int slave_alloc (struct scsi_device *sdev) |
| 81 | { |
| 82 | /* |
| 83 | * Set the INQUIRY transfer length to 36. We don't use any of |
| 84 | * the extra data and many devices choke if asked for more or |
| 85 | * less than 36 bytes. |
| 86 | */ |
| 87 | sdev->inquiry_len = 36; |
| 88 | return 0; |
| 89 | } |
| 90 | |
| 91 | static int slave_configure(struct scsi_device *sdev) |
| 92 | { |
| 93 | /* Scatter-gather buffers (all but the last) must have a length |
| 94 | * divisible by the bulk maxpacket size. Otherwise a data packet |
| 95 | * would end up being short, causing a premature end to the data |
| 96 | * transfer. Since high-speed bulk pipes have a maxpacket size |
| 97 | * of 512, we'll use that as the scsi device queue's DMA alignment |
| 98 | * mask. Guaranteeing proper alignment of the first buffer will |
| 99 | * have the desired effect because, except at the beginning and |
| 100 | * the end, scatter-gather buffers follow page boundaries. */ |
| 101 | blk_queue_dma_alignment(sdev->request_queue, (512 - 1)); |
| 102 | |
| 103 | /* Set the SCSI level to at least 2. We'll leave it at 3 if that's |
| 104 | * what is originally reported. We need this to avoid confusing |
| 105 | * the SCSI layer with devices that report 0 or 1, but need 10-byte |
| 106 | * commands (ala ATAPI devices behind certain bridges, or devices |
| 107 | * which simply have broken INQUIRY data). |
| 108 | * |
| 109 | * NOTE: This means /dev/sg programs (ala cdrecord) will get the |
| 110 | * actual information. This seems to be the preference for |
| 111 | * programs like that. |
| 112 | * |
| 113 | * NOTE: This also means that /proc/scsi/scsi and sysfs may report |
| 114 | * the actual value or the modified one, depending on where the |
| 115 | * data comes from. |
| 116 | */ |
| 117 | if (sdev->scsi_level < SCSI_2) |
| 118 | sdev->scsi_level = sdev->sdev_target->scsi_level = SCSI_2; |
| 119 | |
| 120 | return 0; |
| 121 | } |
| 122 | |
| 123 | |
| 124 | /*********************************************************************** |
| 125 | * /proc/scsi/ functions |
| 126 | ***********************************************************************/ |
| 127 | |
| 128 | /* we use this macro to help us write into the buffer */ |
| 129 | #undef SPRINTF |
| 130 | #define SPRINTF(args...) \ |
| 131 | do { if (pos < buffer+length) pos += sprintf(pos, ## args); } while (0) |
| 132 | |
| 133 | static int proc_info (struct Scsi_Host *host, char *buffer, |
| 134 | char **start, off_t offset, int length, int inout) |
| 135 | { |
| 136 | char *pos = buffer; |
| 137 | |
| 138 | /* if someone is sending us data, just throw it away */ |
| 139 | if (inout) |
| 140 | return length; |
| 141 | |
| 142 | /* print the controller name */ |
| 143 | SPRINTF(" Host scsi%d: %s\n", host->host_no, CR_DRIVER_NAME); |
| 144 | |
| 145 | /* print product, vendor, and driver version strings */ |
| 146 | SPRINTF(" Vendor: Realtek Corp.\n"); |
| 147 | SPRINTF(" Product: PCIE Card Reader\n"); |
| 148 | SPRINTF(" Version: %s\n", DRIVER_VERSION); |
| 149 | |
| 150 | /* |
| 151 | * Calculate start of next buffer, and return value. |
| 152 | */ |
| 153 | *start = buffer + offset; |
| 154 | |
| 155 | if ((pos - buffer) < offset) |
| 156 | return 0; |
| 157 | else if ((pos - buffer - offset) < length) |
| 158 | return pos - buffer - offset; |
| 159 | else |
| 160 | return length; |
| 161 | } |
| 162 | |
| 163 | /* queue a command */ |
| 164 | /* This is always called with scsi_lock(host) held */ |
| 165 | static int queuecommand_lck(struct scsi_cmnd *srb, |
| 166 | void (*done)(struct scsi_cmnd *)) |
| 167 | { |
| 168 | struct rtsx_dev *dev = host_to_rtsx(srb->device->host); |
| 169 | struct rtsx_chip *chip = dev->chip; |
| 170 | |
| 171 | /* check for state-transition errors */ |
| 172 | if (chip->srb != NULL) { |
| 173 | printk(KERN_ERR "Error in %s: chip->srb = %p\n", |
| 174 | __func__, chip->srb); |
| 175 | return SCSI_MLQUEUE_HOST_BUSY; |
| 176 | } |
| 177 | |
| 178 | /* fail the command if we are disconnecting */ |
| 179 | if (rtsx_chk_stat(chip, RTSX_STAT_DISCONNECT)) { |
| 180 | printk(KERN_INFO "Fail command during disconnect\n"); |
| 181 | srb->result = DID_NO_CONNECT << 16; |
| 182 | done(srb); |
| 183 | return 0; |
| 184 | } |
| 185 | |
| 186 | /* enqueue the command and wake up the control thread */ |
| 187 | srb->scsi_done = done; |
| 188 | chip->srb = srb; |
wwang | f704648 | 2011-08-03 16:00:25 +0800 | [diff] [blame] | 189 | complete(&dev->cmnd_ready); |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 190 | |
| 191 | return 0; |
| 192 | } |
| 193 | |
| 194 | static DEF_SCSI_QCMD(queuecommand) |
| 195 | |
| 196 | /*********************************************************************** |
| 197 | * Error handling functions |
| 198 | ***********************************************************************/ |
| 199 | |
| 200 | /* Command timeout and abort */ |
| 201 | static int command_abort(struct scsi_cmnd *srb) |
| 202 | { |
| 203 | struct Scsi_Host *host = srb->device->host; |
| 204 | struct rtsx_dev *dev = host_to_rtsx(host); |
| 205 | struct rtsx_chip *chip = dev->chip; |
| 206 | |
| 207 | printk(KERN_INFO "%s called\n", __func__); |
| 208 | |
| 209 | scsi_lock(host); |
| 210 | |
| 211 | /* Is this command still active? */ |
| 212 | if (chip->srb != srb) { |
| 213 | scsi_unlock(host); |
| 214 | printk(KERN_INFO "-- nothing to abort\n"); |
| 215 | return FAILED; |
| 216 | } |
| 217 | |
| 218 | rtsx_set_stat(chip, RTSX_STAT_ABORT); |
| 219 | |
| 220 | scsi_unlock(host); |
| 221 | |
| 222 | /* Wait for the aborted command to finish */ |
| 223 | wait_for_completion(&dev->notify); |
| 224 | |
| 225 | return SUCCESS; |
| 226 | } |
| 227 | |
| 228 | /* This invokes the transport reset mechanism to reset the state of the |
| 229 | * device */ |
| 230 | static int device_reset(struct scsi_cmnd *srb) |
| 231 | { |
| 232 | int result = 0; |
| 233 | |
| 234 | printk(KERN_INFO "%s called\n", __func__); |
| 235 | |
| 236 | return result < 0 ? FAILED : SUCCESS; |
| 237 | } |
| 238 | |
| 239 | /* Simulate a SCSI bus reset by resetting the device's USB port. */ |
| 240 | static int bus_reset(struct scsi_cmnd *srb) |
| 241 | { |
| 242 | int result = 0; |
| 243 | |
| 244 | printk(KERN_INFO "%s called\n", __func__); |
| 245 | |
| 246 | return result < 0 ? FAILED : SUCCESS; |
| 247 | } |
| 248 | |
| 249 | |
| 250 | /* |
| 251 | * this defines our host template, with which we'll allocate hosts |
| 252 | */ |
| 253 | |
wwang | 6680d2c | 2011-02-16 15:56:11 +0800 | [diff] [blame] | 254 | static struct scsi_host_template rtsx_host_template = { |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 255 | /* basic userland interface stuff */ |
| 256 | .name = CR_DRIVER_NAME, |
| 257 | .proc_name = CR_DRIVER_NAME, |
| 258 | .proc_info = proc_info, |
| 259 | .info = host_info, |
| 260 | |
| 261 | /* command interface -- queued only */ |
| 262 | .queuecommand = queuecommand, |
| 263 | |
| 264 | /* error and abort handlers */ |
| 265 | .eh_abort_handler = command_abort, |
| 266 | .eh_device_reset_handler = device_reset, |
| 267 | .eh_bus_reset_handler = bus_reset, |
| 268 | |
| 269 | /* queue commands only, only one command per LUN */ |
| 270 | .can_queue = 1, |
| 271 | .cmd_per_lun = 1, |
| 272 | |
| 273 | /* unknown initiator id */ |
| 274 | .this_id = -1, |
| 275 | |
| 276 | .slave_alloc = slave_alloc, |
| 277 | .slave_configure = slave_configure, |
| 278 | |
| 279 | /* lots of sg segments can be handled */ |
| 280 | .sg_tablesize = SG_ALL, |
| 281 | |
| 282 | /* limit the total size of a transfer to 120 KB */ |
| 283 | .max_sectors = 240, |
| 284 | |
| 285 | /* merge commands... this seems to help performance, but |
| 286 | * periodically someone should test to see which setting is more |
| 287 | * optimal. |
| 288 | */ |
| 289 | .use_clustering = 1, |
| 290 | |
| 291 | /* emulated HBA */ |
| 292 | .emulated = 1, |
| 293 | |
| 294 | /* we do our own delay after a device or bus reset */ |
| 295 | .skip_settle_delay = 1, |
| 296 | |
| 297 | /* module management */ |
| 298 | .module = THIS_MODULE |
| 299 | }; |
| 300 | |
| 301 | |
| 302 | static int rtsx_acquire_irq(struct rtsx_dev *dev) |
| 303 | { |
| 304 | struct rtsx_chip *chip = dev->chip; |
| 305 | |
| 306 | printk(KERN_INFO "%s: chip->msi_en = %d, pci->irq = %d\n", |
| 307 | __func__, chip->msi_en, dev->pci->irq); |
| 308 | |
| 309 | if (request_irq(dev->pci->irq, rtsx_interrupt, |
| 310 | chip->msi_en ? 0 : IRQF_SHARED, |
| 311 | CR_DRIVER_NAME, dev)) { |
| 312 | printk(KERN_ERR "rtsx: unable to grab IRQ %d, " |
| 313 | "disabling device\n", dev->pci->irq); |
| 314 | return -1; |
| 315 | } |
| 316 | |
| 317 | dev->irq = dev->pci->irq; |
| 318 | pci_intx(dev->pci, !chip->msi_en); |
| 319 | |
| 320 | return 0; |
| 321 | } |
| 322 | |
| 323 | |
| 324 | int rtsx_read_pci_cfg_byte(u8 bus, u8 dev, u8 func, u8 offset, u8 *val) |
| 325 | { |
| 326 | struct pci_dev *pdev; |
| 327 | u8 data; |
| 328 | u8 devfn = (dev << 3) | func; |
| 329 | |
| 330 | pdev = pci_get_bus_and_slot(bus, devfn); |
Vasiliy Kulikov | 37af07d | 2011-02-02 21:29:31 +0300 | [diff] [blame] | 331 | if (!pdev) |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 332 | return -1; |
| 333 | |
| 334 | pci_read_config_byte(pdev, offset, &data); |
| 335 | if (val) |
| 336 | *val = data; |
| 337 | |
| 338 | return 0; |
| 339 | } |
| 340 | |
| 341 | #ifdef CONFIG_PM |
| 342 | /* |
| 343 | * power management |
| 344 | */ |
| 345 | static int rtsx_suspend(struct pci_dev *pci, pm_message_t state) |
| 346 | { |
| 347 | struct rtsx_dev *dev = (struct rtsx_dev *)pci_get_drvdata(pci); |
| 348 | struct rtsx_chip *chip; |
| 349 | |
| 350 | printk(KERN_INFO "Ready to suspend\n"); |
| 351 | |
| 352 | if (!dev) { |
| 353 | printk(KERN_ERR "Invalid memory\n"); |
| 354 | return 0; |
| 355 | } |
| 356 | |
| 357 | /* lock the device pointers */ |
| 358 | mutex_lock(&(dev->dev_mutex)); |
| 359 | |
| 360 | chip = dev->chip; |
| 361 | |
| 362 | rtsx_do_before_power_down(chip, PM_S3); |
| 363 | |
| 364 | if (dev->irq >= 0) { |
| 365 | synchronize_irq(dev->irq); |
| 366 | free_irq(dev->irq, (void *)dev); |
| 367 | dev->irq = -1; |
| 368 | } |
| 369 | |
| 370 | if (chip->msi_en) |
| 371 | pci_disable_msi(pci); |
| 372 | |
| 373 | pci_save_state(pci); |
| 374 | pci_enable_wake(pci, pci_choose_state(pci, state), 1); |
| 375 | pci_disable_device(pci); |
| 376 | pci_set_power_state(pci, pci_choose_state(pci, state)); |
| 377 | |
| 378 | /* unlock the device pointers */ |
| 379 | mutex_unlock(&dev->dev_mutex); |
| 380 | |
| 381 | return 0; |
| 382 | } |
| 383 | |
| 384 | static int rtsx_resume(struct pci_dev *pci) |
| 385 | { |
| 386 | struct rtsx_dev *dev = (struct rtsx_dev *)pci_get_drvdata(pci); |
| 387 | struct rtsx_chip *chip; |
| 388 | |
| 389 | printk(KERN_INFO "Ready to resume\n"); |
| 390 | |
| 391 | if (!dev) { |
| 392 | printk(KERN_ERR "Invalid memory\n"); |
| 393 | return 0; |
| 394 | } |
| 395 | |
| 396 | chip = dev->chip; |
| 397 | |
| 398 | /* lock the device pointers */ |
| 399 | mutex_lock(&(dev->dev_mutex)); |
| 400 | |
| 401 | pci_set_power_state(pci, PCI_D0); |
| 402 | pci_restore_state(pci); |
| 403 | if (pci_enable_device(pci) < 0) { |
| 404 | printk(KERN_ERR "%s: pci_enable_device failed, " |
| 405 | "disabling device\n", CR_DRIVER_NAME); |
| 406 | /* unlock the device pointers */ |
| 407 | mutex_unlock(&dev->dev_mutex); |
| 408 | return -EIO; |
| 409 | } |
| 410 | pci_set_master(pci); |
| 411 | |
| 412 | if (chip->msi_en) { |
| 413 | if (pci_enable_msi(pci) < 0) |
| 414 | chip->msi_en = 0; |
| 415 | } |
| 416 | |
| 417 | if (rtsx_acquire_irq(dev) < 0) { |
| 418 | /* unlock the device pointers */ |
| 419 | mutex_unlock(&dev->dev_mutex); |
| 420 | return -EIO; |
| 421 | } |
| 422 | |
| 423 | rtsx_write_register(chip, HOST_SLEEP_STATE, 0x03, 0x00); |
| 424 | rtsx_init_chip(chip); |
| 425 | |
| 426 | /* unlock the device pointers */ |
| 427 | mutex_unlock(&dev->dev_mutex); |
| 428 | |
| 429 | return 0; |
| 430 | } |
| 431 | #endif /* CONFIG_PM */ |
| 432 | |
wwang | 6680d2c | 2011-02-16 15:56:11 +0800 | [diff] [blame] | 433 | static void rtsx_shutdown(struct pci_dev *pci) |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 434 | { |
| 435 | struct rtsx_dev *dev = (struct rtsx_dev *)pci_get_drvdata(pci); |
| 436 | struct rtsx_chip *chip; |
| 437 | |
| 438 | printk(KERN_INFO "Ready to shutdown\n"); |
| 439 | |
| 440 | if (!dev) { |
| 441 | printk(KERN_ERR "Invalid memory\n"); |
| 442 | return; |
| 443 | } |
| 444 | |
| 445 | chip = dev->chip; |
| 446 | |
| 447 | rtsx_do_before_power_down(chip, PM_S1); |
| 448 | |
| 449 | if (dev->irq >= 0) { |
| 450 | synchronize_irq(dev->irq); |
| 451 | free_irq(dev->irq, (void *)dev); |
| 452 | dev->irq = -1; |
| 453 | } |
| 454 | |
| 455 | if (chip->msi_en) |
| 456 | pci_disable_msi(pci); |
| 457 | |
| 458 | pci_disable_device(pci); |
| 459 | |
| 460 | return; |
| 461 | } |
| 462 | |
| 463 | static int rtsx_control_thread(void *__dev) |
| 464 | { |
| 465 | struct rtsx_dev *dev = (struct rtsx_dev *)__dev; |
| 466 | struct rtsx_chip *chip = dev->chip; |
| 467 | struct Scsi_Host *host = rtsx_to_host(dev); |
| 468 | |
| 469 | current->flags |= PF_NOFREEZE; |
| 470 | |
| 471 | for (;;) { |
wwang | f704648 | 2011-08-03 16:00:25 +0800 | [diff] [blame] | 472 | if (wait_for_completion_interruptible(&dev->cmnd_ready)) |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 473 | break; |
| 474 | |
| 475 | /* lock the device pointers */ |
| 476 | mutex_lock(&(dev->dev_mutex)); |
| 477 | |
| 478 | /* if the device has disconnected, we are free to exit */ |
| 479 | if (rtsx_chk_stat(chip, RTSX_STAT_DISCONNECT)) { |
| 480 | printk(KERN_INFO "-- rtsx-control exiting\n"); |
| 481 | mutex_unlock(&dev->dev_mutex); |
| 482 | break; |
| 483 | } |
| 484 | |
| 485 | /* lock access to the state */ |
| 486 | scsi_lock(host); |
| 487 | |
| 488 | /* has the command aborted ? */ |
| 489 | if (rtsx_chk_stat(chip, RTSX_STAT_ABORT)) { |
| 490 | chip->srb->result = DID_ABORT << 16; |
| 491 | goto SkipForAbort; |
| 492 | } |
| 493 | |
| 494 | scsi_unlock(host); |
| 495 | |
| 496 | /* reject the command if the direction indicator |
| 497 | * is UNKNOWN |
| 498 | */ |
| 499 | if (chip->srb->sc_data_direction == DMA_BIDIRECTIONAL) { |
| 500 | printk(KERN_ERR "UNKNOWN data direction\n"); |
| 501 | chip->srb->result = DID_ERROR << 16; |
| 502 | } |
| 503 | |
| 504 | /* reject if target != 0 or if LUN is higher than |
| 505 | * the maximum known LUN |
| 506 | */ |
| 507 | else if (chip->srb->device->id) { |
| 508 | printk(KERN_ERR "Bad target number (%d:%d)\n", |
| 509 | chip->srb->device->id, chip->srb->device->lun); |
| 510 | chip->srb->result = DID_BAD_TARGET << 16; |
| 511 | } |
| 512 | |
| 513 | else if (chip->srb->device->lun > chip->max_lun) { |
| 514 | printk(KERN_ERR "Bad LUN (%d:%d)\n", |
| 515 | chip->srb->device->id, chip->srb->device->lun); |
| 516 | chip->srb->result = DID_BAD_TARGET << 16; |
| 517 | } |
| 518 | |
| 519 | /* we've got a command, let's do it! */ |
| 520 | else { |
| 521 | RTSX_DEBUG(scsi_show_command(chip->srb)); |
| 522 | rtsx_invoke_transport(chip->srb, chip); |
| 523 | } |
| 524 | |
| 525 | /* lock access to the state */ |
| 526 | scsi_lock(host); |
| 527 | |
| 528 | /* did the command already complete because of a disconnect? */ |
| 529 | if (!chip->srb) |
| 530 | ; /* nothing to do */ |
| 531 | |
| 532 | /* indicate that the command is done */ |
| 533 | else if (chip->srb->result != DID_ABORT << 16) { |
| 534 | chip->srb->scsi_done(chip->srb); |
| 535 | } else { |
| 536 | SkipForAbort: |
| 537 | printk(KERN_ERR "scsi command aborted\n"); |
| 538 | } |
| 539 | |
| 540 | if (rtsx_chk_stat(chip, RTSX_STAT_ABORT)) { |
| 541 | complete(&(dev->notify)); |
| 542 | |
| 543 | rtsx_set_stat(chip, RTSX_STAT_IDLE); |
| 544 | } |
| 545 | |
| 546 | /* finished working on this command */ |
| 547 | chip->srb = NULL; |
| 548 | scsi_unlock(host); |
| 549 | |
| 550 | /* unlock the device pointers */ |
| 551 | mutex_unlock(&dev->dev_mutex); |
| 552 | } /* for (;;) */ |
| 553 | |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 554 | /* notify the exit routine that we're actually exiting now |
| 555 | * |
| 556 | * complete()/wait_for_completion() is similar to up()/down(), |
| 557 | * except that complete() is safe in the case where the structure |
| 558 | * is getting deleted in a parallel mode of execution (i.e. just |
| 559 | * after the down() -- that's necessary for the thread-shutdown |
| 560 | * case. |
| 561 | * |
| 562 | * complete_and_exit() goes even further than this -- it is safe in |
| 563 | * the case that the thread of the caller is going away (not just |
| 564 | * the structure) -- this is necessary for the module-remove case. |
| 565 | * This is important in preemption kernels, which transfer the flow |
| 566 | * of execution immediately upon a complete(). |
| 567 | */ |
wwang | f704648 | 2011-08-03 16:00:25 +0800 | [diff] [blame] | 568 | complete_and_exit(&dev->control_exit, 0); |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 569 | } |
| 570 | |
| 571 | |
| 572 | static int rtsx_polling_thread(void *__dev) |
| 573 | { |
| 574 | struct rtsx_dev *dev = (struct rtsx_dev *)__dev; |
| 575 | struct rtsx_chip *chip = dev->chip; |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 576 | struct sd_info *sd_card = &(chip->sd_card); |
| 577 | struct xd_info *xd_card = &(chip->xd_card); |
| 578 | struct ms_info *ms_card = &(chip->ms_card); |
| 579 | |
| 580 | sd_card->cleanup_counter = 0; |
| 581 | xd_card->cleanup_counter = 0; |
| 582 | ms_card->cleanup_counter = 0; |
| 583 | |
| 584 | /* Wait until SCSI scan finished */ |
| 585 | wait_timeout((delay_use + 5) * 1000); |
| 586 | |
| 587 | for (;;) { |
Cho, Yu-Chen | da548cb | 2011-05-03 17:53:35 +0800 | [diff] [blame] | 588 | |
| 589 | set_current_state(TASK_INTERRUPTIBLE); |
| 590 | schedule_timeout(POLLING_INTERVAL); |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 591 | |
| 592 | /* lock the device pointers */ |
| 593 | mutex_lock(&(dev->dev_mutex)); |
| 594 | |
| 595 | /* if the device has disconnected, we are free to exit */ |
| 596 | if (rtsx_chk_stat(chip, RTSX_STAT_DISCONNECT)) { |
| 597 | printk(KERN_INFO "-- rtsx-polling exiting\n"); |
| 598 | mutex_unlock(&dev->dev_mutex); |
| 599 | break; |
| 600 | } |
| 601 | |
| 602 | mutex_unlock(&dev->dev_mutex); |
| 603 | |
| 604 | mspro_polling_format_status(chip); |
| 605 | |
| 606 | /* lock the device pointers */ |
| 607 | mutex_lock(&(dev->dev_mutex)); |
| 608 | |
| 609 | rtsx_polling_func(chip); |
| 610 | |
| 611 | /* unlock the device pointers */ |
| 612 | mutex_unlock(&dev->dev_mutex); |
| 613 | } |
| 614 | |
wwang | f704648 | 2011-08-03 16:00:25 +0800 | [diff] [blame] | 615 | complete_and_exit(&dev->polling_exit, 0); |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 616 | } |
| 617 | |
| 618 | /* |
| 619 | * interrupt handler |
| 620 | */ |
| 621 | static irqreturn_t rtsx_interrupt(int irq, void *dev_id) |
| 622 | { |
| 623 | struct rtsx_dev *dev = dev_id; |
| 624 | struct rtsx_chip *chip; |
| 625 | int retval; |
| 626 | u32 status; |
| 627 | |
| 628 | if (dev) { |
| 629 | chip = dev->chip; |
| 630 | } else { |
| 631 | return IRQ_NONE; |
| 632 | } |
| 633 | |
| 634 | if (!chip) { |
| 635 | return IRQ_NONE; |
| 636 | } |
| 637 | |
| 638 | spin_lock(&dev->reg_lock); |
| 639 | |
| 640 | retval = rtsx_pre_handle_interrupt(chip); |
| 641 | if (retval == STATUS_FAIL) { |
| 642 | spin_unlock(&dev->reg_lock); |
| 643 | if (chip->int_reg == 0xFFFFFFFF) { |
| 644 | return IRQ_HANDLED; |
| 645 | } else { |
| 646 | return IRQ_NONE; |
| 647 | } |
| 648 | } |
| 649 | |
| 650 | status = chip->int_reg; |
| 651 | |
| 652 | if (dev->check_card_cd) { |
| 653 | if (!(dev->check_card_cd & status)) { |
| 654 | /* card not exist, return TRANS_RESULT_FAIL */ |
| 655 | dev->trans_result = TRANS_RESULT_FAIL; |
| 656 | if (dev->done) |
| 657 | complete(dev->done); |
| 658 | goto Exit; |
| 659 | } |
| 660 | } |
| 661 | |
| 662 | if (status & (NEED_COMPLETE_INT | DELINK_INT)) { |
| 663 | if (status & (TRANS_FAIL_INT | DELINK_INT)) { |
| 664 | if (status & DELINK_INT) { |
| 665 | RTSX_SET_DELINK(chip); |
| 666 | } |
| 667 | dev->trans_result = TRANS_RESULT_FAIL; |
| 668 | if (dev->done) |
| 669 | complete(dev->done); |
| 670 | } else if (status & TRANS_OK_INT) { |
| 671 | dev->trans_result = TRANS_RESULT_OK; |
| 672 | if (dev->done) |
| 673 | complete(dev->done); |
| 674 | } else if (status & DATA_DONE_INT) { |
| 675 | dev->trans_result = TRANS_NOT_READY; |
| 676 | if (dev->done && (dev->trans_state == STATE_TRANS_SG)) |
| 677 | complete(dev->done); |
| 678 | } |
| 679 | } |
| 680 | |
| 681 | Exit: |
| 682 | spin_unlock(&dev->reg_lock); |
| 683 | return IRQ_HANDLED; |
| 684 | } |
| 685 | |
| 686 | |
| 687 | /* Release all our dynamic resources */ |
| 688 | static void rtsx_release_resources(struct rtsx_dev *dev) |
| 689 | { |
| 690 | printk(KERN_INFO "-- %s\n", __func__); |
| 691 | |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 692 | /* Tell the control thread to exit. The SCSI host must |
| 693 | * already have been removed so it won't try to queue |
| 694 | * any more commands. |
| 695 | */ |
| 696 | printk(KERN_INFO "-- sending exit command to thread\n"); |
wwang | f704648 | 2011-08-03 16:00:25 +0800 | [diff] [blame] | 697 | complete(&dev->cmnd_ready); |
| 698 | if (dev->ctl_thread) |
| 699 | wait_for_completion(&dev->control_exit); |
| 700 | if (dev->polling_thread) |
| 701 | wait_for_completion(&dev->polling_exit); |
| 702 | |
| 703 | wait_timeout(200); |
| 704 | |
| 705 | if (dev->rtsx_resv_buf) { |
| 706 | dma_free_coherent(&(dev->pci->dev), RTSX_RESV_BUF_LEN, |
| 707 | dev->rtsx_resv_buf, dev->rtsx_resv_buf_addr); |
| 708 | dev->chip->host_cmds_ptr = NULL; |
| 709 | dev->chip->host_sg_tbl_ptr = NULL; |
| 710 | } |
| 711 | |
| 712 | if (dev->irq > 0) |
| 713 | free_irq(dev->irq, (void *)dev); |
| 714 | if (dev->chip->msi_en) |
| 715 | pci_disable_msi(dev->pci); |
| 716 | if (dev->remap_addr) |
| 717 | iounmap(dev->remap_addr); |
| 718 | |
| 719 | pci_disable_device(dev->pci); |
| 720 | pci_release_regions(dev->pci); |
| 721 | |
| 722 | rtsx_release_chip(dev->chip); |
| 723 | kfree(dev->chip); |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 724 | } |
| 725 | |
| 726 | /* First stage of disconnect processing: stop all commands and remove |
| 727 | * the host */ |
| 728 | static void quiesce_and_remove_host(struct rtsx_dev *dev) |
| 729 | { |
| 730 | struct Scsi_Host *host = rtsx_to_host(dev); |
| 731 | struct rtsx_chip *chip = dev->chip; |
| 732 | |
| 733 | /* Prevent new transfers, stop the current command, and |
| 734 | * interrupt a SCSI-scan or device-reset delay */ |
| 735 | mutex_lock(&dev->dev_mutex); |
| 736 | scsi_lock(host); |
| 737 | rtsx_set_stat(chip, RTSX_STAT_DISCONNECT); |
| 738 | scsi_unlock(host); |
| 739 | mutex_unlock(&dev->dev_mutex); |
| 740 | wake_up(&dev->delay_wait); |
wwang | f704648 | 2011-08-03 16:00:25 +0800 | [diff] [blame] | 741 | wait_for_completion(&dev->scanning_done); |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 742 | |
| 743 | /* Wait some time to let other threads exist */ |
| 744 | wait_timeout(100); |
| 745 | |
| 746 | /* queuecommand won't accept any new commands and the control |
| 747 | * thread won't execute a previously-queued command. If there |
| 748 | * is such a command pending, complete it with an error. */ |
| 749 | mutex_lock(&dev->dev_mutex); |
| 750 | if (chip->srb) { |
| 751 | chip->srb->result = DID_NO_CONNECT << 16; |
| 752 | scsi_lock(host); |
| 753 | chip->srb->scsi_done(dev->chip->srb); |
| 754 | chip->srb = NULL; |
| 755 | scsi_unlock(host); |
| 756 | } |
| 757 | mutex_unlock(&dev->dev_mutex); |
| 758 | |
| 759 | /* Now we own no commands so it's safe to remove the SCSI host */ |
| 760 | scsi_remove_host(host); |
| 761 | } |
| 762 | |
| 763 | /* Second stage of disconnect processing: deallocate all resources */ |
| 764 | static void release_everything(struct rtsx_dev *dev) |
| 765 | { |
| 766 | rtsx_release_resources(dev); |
| 767 | |
| 768 | /* Drop our reference to the host; the SCSI core will free it |
| 769 | * when the refcount becomes 0. */ |
| 770 | scsi_host_put(rtsx_to_host(dev)); |
| 771 | } |
| 772 | |
| 773 | /* Thread to carry out delayed SCSI-device scanning */ |
| 774 | static int rtsx_scan_thread(void *__dev) |
| 775 | { |
| 776 | struct rtsx_dev *dev = (struct rtsx_dev *)__dev; |
| 777 | struct rtsx_chip *chip = dev->chip; |
| 778 | |
| 779 | /* Wait for the timeout to expire or for a disconnect */ |
| 780 | if (delay_use > 0) { |
| 781 | printk(KERN_INFO "%s: waiting for device " |
| 782 | "to settle before scanning\n", CR_DRIVER_NAME); |
| 783 | wait_event_interruptible_timeout(dev->delay_wait, |
| 784 | rtsx_chk_stat(chip, RTSX_STAT_DISCONNECT), |
| 785 | delay_use * HZ); |
| 786 | } |
| 787 | |
| 788 | /* If the device is still connected, perform the scanning */ |
| 789 | if (!rtsx_chk_stat(chip, RTSX_STAT_DISCONNECT)) { |
| 790 | scsi_scan_host(rtsx_to_host(dev)); |
| 791 | printk(KERN_INFO "%s: device scan complete\n", CR_DRIVER_NAME); |
| 792 | |
| 793 | /* Should we unbind if no devices were detected? */ |
| 794 | } |
| 795 | |
wwang | f704648 | 2011-08-03 16:00:25 +0800 | [diff] [blame] | 796 | complete_and_exit(&dev->scanning_done, 0); |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 797 | } |
| 798 | |
| 799 | static void rtsx_init_options(struct rtsx_chip *chip) |
| 800 | { |
| 801 | chip->vendor_id = chip->rtsx->pci->vendor; |
| 802 | chip->product_id = chip->rtsx->pci->device; |
| 803 | chip->adma_mode = 1; |
| 804 | chip->lun_mc = 0; |
| 805 | chip->driver_first_load = 1; |
| 806 | #ifdef HW_AUTO_SWITCH_SD_BUS |
| 807 | chip->sdio_in_charge = 0; |
| 808 | #endif |
| 809 | |
| 810 | chip->mspro_formatter_enable = 1; |
| 811 | chip->ignore_sd = 0; |
| 812 | chip->use_hw_setting = 0; |
| 813 | chip->lun_mode = DEFAULT_SINGLE; |
| 814 | chip->auto_delink_en = auto_delink_en; |
| 815 | chip->ss_en = ss_en; |
| 816 | chip->ss_idle_period = ss_interval * 1000; |
| 817 | chip->remote_wakeup_en = 0; |
| 818 | chip->aspm_l0s_l1_en = aspm_l0s_l1_en; |
| 819 | chip->dynamic_aspm = 1; |
| 820 | chip->fpga_sd_sdr104_clk = CLK_200; |
| 821 | chip->fpga_sd_ddr50_clk = CLK_100; |
| 822 | chip->fpga_sd_sdr50_clk = CLK_100; |
| 823 | chip->fpga_sd_hs_clk = CLK_100; |
| 824 | chip->fpga_mmc_52m_clk = CLK_80; |
| 825 | chip->fpga_ms_hg_clk = CLK_80; |
| 826 | chip->fpga_ms_4bit_clk = CLK_80; |
| 827 | chip->fpga_ms_1bit_clk = CLK_40; |
wwang | e0007c0 | 2011-03-15 16:22:06 +0800 | [diff] [blame] | 828 | chip->asic_sd_sdr104_clk = 203; |
| 829 | chip->asic_sd_sdr50_clk = 98; |
| 830 | chip->asic_sd_ddr50_clk = 98; |
| 831 | chip->asic_sd_hs_clk = 98; |
| 832 | chip->asic_mmc_52m_clk = 98; |
| 833 | chip->asic_ms_hg_clk = 117; |
| 834 | chip->asic_ms_4bit_clk = 78; |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 835 | chip->asic_ms_1bit_clk = 39; |
| 836 | chip->ssc_depth_sd_sdr104 = SSC_DEPTH_2M; |
| 837 | chip->ssc_depth_sd_sdr50 = SSC_DEPTH_2M; |
| 838 | chip->ssc_depth_sd_ddr50 = SSC_DEPTH_1M; |
| 839 | chip->ssc_depth_sd_hs = SSC_DEPTH_1M; |
| 840 | chip->ssc_depth_mmc_52m = SSC_DEPTH_1M; |
| 841 | chip->ssc_depth_ms_hg = SSC_DEPTH_1M; |
| 842 | chip->ssc_depth_ms_4bit = SSC_DEPTH_512K; |
| 843 | chip->ssc_depth_low_speed = SSC_DEPTH_512K; |
| 844 | chip->ssc_en = 1; |
| 845 | chip->sd_speed_prior = 0x01040203; |
| 846 | chip->sd_current_prior = 0x00010203; |
| 847 | chip->sd_ctl = SD_PUSH_POINT_AUTO | SD_SAMPLE_POINT_AUTO | SUPPORT_MMC_DDR_MODE; |
| 848 | chip->sd_ddr_tx_phase = 0; |
| 849 | chip->mmc_ddr_tx_phase = 1; |
| 850 | chip->sd_default_tx_phase = 15; |
| 851 | chip->sd_default_rx_phase = 15; |
| 852 | chip->pmos_pwr_on_interval = 200; |
| 853 | chip->sd_voltage_switch_delay = 1000; |
wwang | 9fe341e | 2011-03-08 15:22:14 +0800 | [diff] [blame] | 854 | chip->ms_power_class_en = 3; |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 855 | |
| 856 | chip->sd_400mA_ocp_thd = 1; |
| 857 | chip->sd_800mA_ocp_thd = 5; |
| 858 | chip->ms_ocp_thd = 2; |
| 859 | |
| 860 | chip->card_drive_sel = 0x55; |
| 861 | chip->sd30_drive_sel_1v8 = 0x03; |
| 862 | chip->sd30_drive_sel_3v3 = 0x01; |
| 863 | |
| 864 | chip->do_delink_before_power_down = 1; |
| 865 | chip->auto_power_down = 1; |
| 866 | chip->polling_config = 0; |
| 867 | |
| 868 | chip->force_clkreq_0 = 1; |
| 869 | chip->ft2_fast_mode = 0; |
| 870 | |
| 871 | chip->sdio_retry_cnt = 1; |
| 872 | |
| 873 | chip->xd_timeout = 2000; |
| 874 | chip->sd_timeout = 10000; |
| 875 | chip->ms_timeout = 2000; |
| 876 | chip->mspro_timeout = 15000; |
| 877 | |
| 878 | chip->power_down_in_ss = 1; |
| 879 | |
| 880 | chip->sdr104_en = 1; |
| 881 | chip->sdr50_en = 1; |
| 882 | chip->ddr50_en = 1; |
| 883 | |
| 884 | chip->delink_stage1_step = 100; |
| 885 | chip->delink_stage2_step = 40; |
| 886 | chip->delink_stage3_step = 20; |
| 887 | |
| 888 | chip->auto_delink_in_L1 = 1; |
| 889 | chip->blink_led = 1; |
| 890 | chip->msi_en = msi_en; |
| 891 | chip->hp_watch_bios_hotplug = 0; |
| 892 | chip->max_payload = 0; |
| 893 | chip->phy_voltage = 0; |
| 894 | |
| 895 | chip->support_ms_8bit = 1; |
| 896 | chip->s3_pwr_off_delay = 1000; |
| 897 | } |
| 898 | |
| 899 | static int __devinit rtsx_probe(struct pci_dev *pci, const struct pci_device_id *pci_id) |
| 900 | { |
| 901 | struct Scsi_Host *host; |
| 902 | struct rtsx_dev *dev; |
| 903 | int err = 0; |
| 904 | struct task_struct *th; |
| 905 | |
| 906 | RTSX_DEBUGP("Realtek PCI-E card reader detected\n"); |
| 907 | |
| 908 | err = pci_enable_device(pci); |
| 909 | if (err < 0) { |
| 910 | printk(KERN_ERR "PCI enable device failed!\n"); |
| 911 | return err; |
| 912 | } |
| 913 | |
| 914 | err = pci_request_regions(pci, CR_DRIVER_NAME); |
| 915 | if (err < 0) { |
| 916 | printk(KERN_ERR "PCI request regions for %s failed!\n", CR_DRIVER_NAME); |
| 917 | pci_disable_device(pci); |
| 918 | return err; |
| 919 | } |
| 920 | |
| 921 | /* |
| 922 | * Ask the SCSI layer to allocate a host structure, with extra |
| 923 | * space at the end for our private rtsx_dev structure. |
| 924 | */ |
| 925 | host = scsi_host_alloc(&rtsx_host_template, sizeof(*dev)); |
| 926 | if (!host) { |
| 927 | printk(KERN_ERR "Unable to allocate the scsi host\n"); |
| 928 | pci_release_regions(pci); |
| 929 | pci_disable_device(pci); |
| 930 | return -ENOMEM; |
| 931 | } |
| 932 | |
| 933 | dev = host_to_rtsx(host); |
| 934 | memset(dev, 0, sizeof(struct rtsx_dev)); |
| 935 | |
Alexander Beregalov | 1840c15 | 2011-03-09 03:53:38 +0300 | [diff] [blame] | 936 | dev->chip = kzalloc(sizeof(struct rtsx_chip), GFP_KERNEL); |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 937 | if (dev->chip == NULL) { |
| 938 | goto errout; |
| 939 | } |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 940 | |
| 941 | spin_lock_init(&dev->reg_lock); |
| 942 | mutex_init(&(dev->dev_mutex)); |
wwang | f704648 | 2011-08-03 16:00:25 +0800 | [diff] [blame] | 943 | init_completion(&dev->cmnd_ready); |
| 944 | init_completion(&dev->control_exit); |
| 945 | init_completion(&dev->polling_exit); |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 946 | init_completion(&(dev->notify)); |
wwang | f704648 | 2011-08-03 16:00:25 +0800 | [diff] [blame] | 947 | init_completion(&dev->scanning_done); |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 948 | init_waitqueue_head(&dev->delay_wait); |
| 949 | |
| 950 | dev->pci = pci; |
| 951 | dev->irq = -1; |
| 952 | |
| 953 | printk(KERN_INFO "Resource length: 0x%x\n", (unsigned int)pci_resource_len(pci, 0)); |
| 954 | dev->addr = pci_resource_start(pci, 0); |
| 955 | dev->remap_addr = ioremap_nocache(dev->addr, pci_resource_len(pci, 0)); |
| 956 | if (dev->remap_addr == NULL) { |
| 957 | printk(KERN_ERR "ioremap error\n"); |
| 958 | err = -ENXIO; |
| 959 | goto errout; |
| 960 | } |
| 961 | |
| 962 | /* Using "unsigned long" cast here to eliminate gcc warning in 64-bit system */ |
| 963 | printk(KERN_INFO "Original address: 0x%lx, remapped address: 0x%lx\n", |
| 964 | (unsigned long)(dev->addr), (unsigned long)(dev->remap_addr)); |
| 965 | |
| 966 | dev->rtsx_resv_buf = dma_alloc_coherent(&(pci->dev), RTSX_RESV_BUF_LEN, |
| 967 | &(dev->rtsx_resv_buf_addr), GFP_KERNEL); |
| 968 | if (dev->rtsx_resv_buf == NULL) { |
| 969 | printk(KERN_ERR "alloc dma buffer fail\n"); |
| 970 | err = -ENXIO; |
| 971 | goto errout; |
| 972 | } |
| 973 | dev->chip->host_cmds_ptr = dev->rtsx_resv_buf; |
| 974 | dev->chip->host_cmds_addr = dev->rtsx_resv_buf_addr; |
| 975 | dev->chip->host_sg_tbl_ptr = dev->rtsx_resv_buf + HOST_CMDS_BUF_LEN; |
| 976 | dev->chip->host_sg_tbl_addr = dev->rtsx_resv_buf_addr + HOST_CMDS_BUF_LEN; |
| 977 | |
| 978 | dev->chip->rtsx = dev; |
| 979 | |
| 980 | rtsx_init_options(dev->chip); |
| 981 | |
| 982 | printk(KERN_INFO "pci->irq = %d\n", pci->irq); |
| 983 | |
| 984 | if (dev->chip->msi_en) { |
| 985 | if (pci_enable_msi(pci) < 0) |
| 986 | dev->chip->msi_en = 0; |
| 987 | } |
| 988 | |
| 989 | if (rtsx_acquire_irq(dev) < 0) { |
| 990 | err = -EBUSY; |
| 991 | goto errout; |
| 992 | } |
| 993 | |
| 994 | pci_set_master(pci); |
| 995 | synchronize_irq(dev->irq); |
| 996 | |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 997 | rtsx_init_chip(dev->chip); |
| 998 | |
| 999 | /* Start up our control thread */ |
wwang | f704648 | 2011-08-03 16:00:25 +0800 | [diff] [blame] | 1000 | th = kthread_run(rtsx_control_thread, dev, CR_DRIVER_NAME); |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 1001 | if (IS_ERR(th)) { |
| 1002 | printk(KERN_ERR "Unable to start control thread\n"); |
| 1003 | err = PTR_ERR(th); |
| 1004 | goto errout; |
| 1005 | } |
wwang | f704648 | 2011-08-03 16:00:25 +0800 | [diff] [blame] | 1006 | dev->ctl_thread = th; |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 1007 | |
wwang | f704648 | 2011-08-03 16:00:25 +0800 | [diff] [blame] | 1008 | err = scsi_add_host(host, &pci->dev); |
| 1009 | if (err) { |
| 1010 | printk(KERN_ERR "Unable to add the scsi host\n"); |
| 1011 | goto errout; |
| 1012 | } |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 1013 | |
| 1014 | /* Start up the thread for delayed SCSI-device scanning */ |
| 1015 | th = kthread_create(rtsx_scan_thread, dev, "rtsx-scan"); |
| 1016 | if (IS_ERR(th)) { |
| 1017 | printk(KERN_ERR "Unable to start the device-scanning thread\n"); |
| 1018 | quiesce_and_remove_host(dev); |
| 1019 | err = PTR_ERR(th); |
| 1020 | goto errout; |
| 1021 | } |
| 1022 | |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 1023 | wake_up_process(th); |
| 1024 | |
| 1025 | /* Start up the thread for polling thread */ |
wwang | f704648 | 2011-08-03 16:00:25 +0800 | [diff] [blame] | 1026 | th = kthread_run(rtsx_polling_thread, dev, "rtsx-polling"); |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 1027 | if (IS_ERR(th)) { |
| 1028 | printk(KERN_ERR "Unable to start the device-polling thread\n"); |
| 1029 | quiesce_and_remove_host(dev); |
| 1030 | err = PTR_ERR(th); |
| 1031 | goto errout; |
| 1032 | } |
wwang | f704648 | 2011-08-03 16:00:25 +0800 | [diff] [blame] | 1033 | dev->polling_thread = th; |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 1034 | |
| 1035 | pci_set_drvdata(pci, dev); |
| 1036 | |
| 1037 | return 0; |
| 1038 | |
| 1039 | /* We come here if there are any problems */ |
| 1040 | errout: |
| 1041 | printk(KERN_ERR "rtsx_probe() failed\n"); |
| 1042 | release_everything(dev); |
| 1043 | |
| 1044 | return err; |
| 1045 | } |
| 1046 | |
| 1047 | |
| 1048 | static void __devexit rtsx_remove(struct pci_dev *pci) |
| 1049 | { |
| 1050 | struct rtsx_dev *dev = (struct rtsx_dev *)pci_get_drvdata(pci); |
| 1051 | |
| 1052 | printk(KERN_INFO "rtsx_remove() called\n"); |
| 1053 | |
| 1054 | quiesce_and_remove_host(dev); |
| 1055 | release_everything(dev); |
| 1056 | |
| 1057 | pci_set_drvdata(pci, NULL); |
| 1058 | } |
| 1059 | |
| 1060 | /* PCI IDs */ |
| 1061 | static struct pci_device_id rtsx_ids[] = { |
| 1062 | { 0x10EC, 0x5208, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_OTHERS << 16, 0xFF0000 }, |
| 1063 | { 0x10EC, 0x5209, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_OTHERS << 16, 0xFF0000 }, |
| 1064 | { 0x10EC, 0x5288, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_OTHERS << 16, 0xFF0000 }, |
| 1065 | { 0, }, |
| 1066 | }; |
| 1067 | |
| 1068 | MODULE_DEVICE_TABLE(pci, rtsx_ids); |
| 1069 | |
| 1070 | /* pci_driver definition */ |
| 1071 | static struct pci_driver driver = { |
| 1072 | .name = CR_DRIVER_NAME, |
| 1073 | .id_table = rtsx_ids, |
| 1074 | .probe = rtsx_probe, |
| 1075 | .remove = __devexit_p(rtsx_remove), |
| 1076 | #ifdef CONFIG_PM |
| 1077 | .suspend = rtsx_suspend, |
| 1078 | .resume = rtsx_resume, |
| 1079 | #endif |
| 1080 | .shutdown = rtsx_shutdown, |
| 1081 | }; |
| 1082 | |
| 1083 | static int __init rtsx_init(void) |
| 1084 | { |
| 1085 | printk(KERN_INFO "Initializing Realtek PCIE storage driver...\n"); |
| 1086 | |
| 1087 | return pci_register_driver(&driver); |
| 1088 | } |
| 1089 | |
| 1090 | static void __exit rtsx_exit(void) |
| 1091 | { |
| 1092 | printk(KERN_INFO "rtsx_exit() called\n"); |
| 1093 | |
| 1094 | pci_unregister_driver(&driver); |
| 1095 | |
wwang | 77d89b0 | 2011-01-21 17:39:18 +0800 | [diff] [blame] | 1096 | printk(KERN_INFO "%s module exit\n", CR_DRIVER_NAME); |
| 1097 | } |
| 1098 | |
| 1099 | module_init(rtsx_init) |
| 1100 | module_exit(rtsx_exit) |
| 1101 | |