drivers/mmc/sdhci.c

   1 /*
   2  *  linux/drivers/mmc/sdhci.c - Secure Digital Host Controller Interface driver
   3  *
   4  *  Copyright (C) 2005-2006 Pierre Ossman, All Rights Reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11  /*
  12   * Note that PIO transfer is rather crappy atm. The buffer full/empty
  13   * interrupts aren't reliable so we currently transfer the entire buffer
  14   * directly. Patches to solve the problem are welcome.
  15   */
  16
  17 #include <linux/delay.h>
  18 #include <linux/highmem.h>
  19 #include <linux/pci.h>
  20 #include <linux/dma-mapping.h>
  21
  22 #include <linux/mmc/host.h>
  23 #include <linux/mmc/protocol.h>
  24
  25 #include <asm/scatterlist.h>
  26
  27 #include "sdhci.h"
  28
  29 #define DRIVER_NAME "sdhci"
  30 #define DRIVER_VERSION "0.11"
  31
  32 #define BUGMAIL "<sdhci-devel@list.drzeus.cx>"
  33
  34 #define DBG(f, x...) \
  35         pr_debug(DRIVER_NAME " [%s()]: " f, __func__,## x)
  36
  37 static const struct pci_device_id pci_ids[] __devinitdata = {
  38         /* handle any SD host controller */
  39         {PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)},
  40         { /* end: all zeroes */ },
  41 };
  42
  43 MODULE_DEVICE_TABLE(pci, pci_ids);
  44
  45 static void sdhci_prepare_data(struct sdhci_host *, struct mmc_data *);
  46 static void sdhci_finish_data(struct sdhci_host *);
  47
  48 static void sdhci_send_command(struct sdhci_host *, struct mmc_command *);
  49 static void sdhci_finish_command(struct sdhci_host *);
  50
  51 static void sdhci_dumpregs(struct sdhci_host *host)
  52 {
  53         printk(KERN_DEBUG DRIVER_NAME ": ============== REGISTER DUMP ==============\n");
  54
  55         printk(KERN_DEBUG DRIVER_NAME ": Sys addr: 0x%08x | Version:  0x%08x\n",
  56                 readl(host->ioaddr + SDHCI_DMA_ADDRESS),
  57                 readw(host->ioaddr + SDHCI_HOST_VERSION));
  58         printk(KERN_DEBUG DRIVER_NAME ": Blk size: 0x%08x | Blk cnt:  0x%08x\n",
  59                 readw(host->ioaddr + SDHCI_BLOCK_SIZE),
  60                 readw(host->ioaddr + SDHCI_BLOCK_COUNT));
  61         printk(KERN_DEBUG DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n",
  62                 readl(host->ioaddr + SDHCI_ARGUMENT),
  63                 readw(host->ioaddr + SDHCI_TRANSFER_MODE));
  64         printk(KERN_DEBUG DRIVER_NAME ": Present:  0x%08x | Host ctl: 0x%08x\n",
  65                 readl(host->ioaddr + SDHCI_PRESENT_STATE),
  66                 readb(host->ioaddr + SDHCI_HOST_CONTROL));
  67         printk(KERN_DEBUG DRIVER_NAME ": Power:    0x%08x | Blk gap:  0x%08x\n",
  68                 readb(host->ioaddr + SDHCI_POWER_CONTROL),
  69                 readb(host->ioaddr + SDHCI_BLOCK_GAP_CONTROL));
  70         printk(KERN_DEBUG DRIVER_NAME ": Wake-up:  0x%08x | Clock:    0x%08x\n",
  71                 readb(host->ioaddr + SDHCI_WALK_UP_CONTROL),
  72                 readw(host->ioaddr + SDHCI_CLOCK_CONTROL));
  73         printk(KERN_DEBUG DRIVER_NAME ": Timeout:  0x%08x | Int stat: 0x%08x\n",
  74                 readb(host->ioaddr + SDHCI_TIMEOUT_CONTROL),
  75                 readl(host->ioaddr + SDHCI_INT_STATUS));
  76         printk(KERN_DEBUG DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n",
  77                 readl(host->ioaddr + SDHCI_INT_ENABLE),
  78                 readl(host->ioaddr + SDHCI_SIGNAL_ENABLE));
  79         printk(KERN_DEBUG DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n",
  80                 readw(host->ioaddr + SDHCI_ACMD12_ERR),
  81                 readw(host->ioaddr + SDHCI_SLOT_INT_STATUS));
  82         printk(KERN_DEBUG DRIVER_NAME ": Caps:     0x%08x | Max curr: 0x%08x\n",
  83                 readl(host->ioaddr + SDHCI_CAPABILITIES),
  84                 readl(host->ioaddr + SDHCI_MAX_CURRENT));
  85
  86         printk(KERN_DEBUG DRIVER_NAME ": ===========================================\n");
  87 }
  88
  89 /*****************************************************************************\
  90  *                                                                           *
  91  * Low level functions                                                       *
  92  *                                                                           *
  93 \*****************************************************************************/
  94
  95 static void sdhci_reset(struct sdhci_host *host, u8 mask)
  96 {
  97         unsigned long timeout;
  98
  99         writeb(mask, host->ioaddr + SDHCI_SOFTWARE_RESET);
 100
 101         if (mask & SDHCI_RESET_ALL)
 102                 host->clock = 0;
 103
 104         /* Wait max 100 ms */
 105         timeout = 100;
 106
 107         /* hw clears the bit when it's done */
 108         while (readb(host->ioaddr + SDHCI_SOFTWARE_RESET) & mask) {
 109                 if (timeout == 0) {
 110                         printk(KERN_ERR "%s: Reset 0x%x never completed. "
 111                                 "Please report this to " BUGMAIL ".\n",
 112                                 mmc_hostname(host->mmc), (int)mask);
 113                         sdhci_dumpregs(host);
 114                         return;
 115                 }
 116                 timeout--;
 117                 mdelay(1);
 118         }
 119 }
 120
 121 static void sdhci_init(struct sdhci_host *host)
 122 {
 123         u32 intmask;
 124
 125         sdhci_reset(host, SDHCI_RESET_ALL);
 126
 127         intmask = ~(SDHCI_INT_CARD_INT | SDHCI_INT_BUF_EMPTY | SDHCI_INT_BUF_FULL);
 128
 129         writel(intmask, host->ioaddr + SDHCI_INT_ENABLE);
 130         writel(intmask, host->ioaddr + SDHCI_SIGNAL_ENABLE);
 131
 132         /* This is unknown magic. */
 133         writeb(0xE, host->ioaddr + SDHCI_TIMEOUT_CONTROL);
 134 }
 135
 136 static void sdhci_activate_led(struct sdhci_host *host)
 137 {
 138         u8 ctrl;
 139
 140         ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
 141         ctrl |= SDHCI_CTRL_LED;
 142         writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
 143 }
 144
 145 static void sdhci_deactivate_led(struct sdhci_host *host)
 146 {
 147         u8 ctrl;
 148
 149         ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
 150         ctrl &= ~SDHCI_CTRL_LED;
 151         writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
 152 }
 153
 154 /*****************************************************************************\
 155  *                                                                           *
 156  * Core functions                                                            *
 157  *                                                                           *
 158 \*****************************************************************************/
 159
 160 static inline char* sdhci_kmap_sg(struct sdhci_host* host)
 161 {
 162         host->mapped_sg = kmap_atomic(host->cur_sg->page, KM_BIO_SRC_IRQ);
 163         return host->mapped_sg + host->cur_sg->offset;
 164 }
 165
 166 static inline void sdhci_kunmap_sg(struct sdhci_host* host)
 167 {
 168         kunmap_atomic(host->mapped_sg, KM_BIO_SRC_IRQ);
 169 }
 170
 171 static inline int sdhci_next_sg(struct sdhci_host* host)
 172 {
 173         /*
 174          * Skip to next SG entry.
 175          */
 176         host->cur_sg++;
 177         host->num_sg--;
 178
 179         /*
 180          * Any entries left?
 181          */
 182         if (host->num_sg > 0) {
 183                 host->offset = 0;
 184                 host->remain = host->cur_sg->length;
 185         }
 186
 187         return host->num_sg;
 188 }
 189
 190 static void sdhci_transfer_pio(struct sdhci_host *host)
 191 {
 192         char *buffer;
 193         u32 mask;
 194         int bytes, size;
 195         unsigned long max_jiffies;
 196
 197         BUG_ON(!host->data);
 198
 199         if (host->num_sg == 0)
 200                 return;
 201
 202         bytes = 0;
 203         if (host->data->flags & MMC_DATA_READ)
 204                 mask = SDHCI_DATA_AVAILABLE;
 205         else
 206                 mask = SDHCI_SPACE_AVAILABLE;
 207
 208         buffer = sdhci_kmap_sg(host) + host->offset;
 209
 210         /* Transfer shouldn't take more than 5 s */
 211         max_jiffies = jiffies + HZ * 5;
 212
 213         while (host->size > 0) {
 214                 if (time_after(jiffies, max_jiffies)) {
 215                         printk(KERN_ERR "%s: PIO transfer stalled. "
 216                                 "Please report this to "
 217                                 BUGMAIL ".\n", mmc_hostname(host->mmc));
 218                         sdhci_dumpregs(host);
 219
 220                         sdhci_kunmap_sg(host);
 221
 222                         host->data->error = MMC_ERR_FAILED;
 223                         sdhci_finish_data(host);
 224                         return;
 225                 }
 226
 227                 if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & mask))
 228                         continue;
 229
 230                 size = min(host->size, host->remain);
 231
 232                 if (size >= 4) {
 233                         if (host->data->flags & MMC_DATA_READ)
 234                                 *(u32*)buffer = readl(host->ioaddr + SDHCI_BUFFER);
 235                         else
 236                                 writel(*(u32*)buffer, host->ioaddr + SDHCI_BUFFER);
 237                         size = 4;
 238                 } else if (size >= 2) {
 239                         if (host->data->flags & MMC_DATA_READ)
 240                                 *(u16*)buffer = readw(host->ioaddr + SDHCI_BUFFER);
 241                         else
 242                                 writew(*(u16*)buffer, host->ioaddr + SDHCI_BUFFER);
 243                         size = 2;
 244                 } else {
 245                         if (host->data->flags & MMC_DATA_READ)
 246                                 *(u8*)buffer = readb(host->ioaddr + SDHCI_BUFFER);
 247                         else
 248                                 writeb(*(u8*)buffer, host->ioaddr + SDHCI_BUFFER);
 249                         size = 1;
 250                 }
 251
 252                 buffer += size;
 253                 host->offset += size;
 254                 host->remain -= size;
 255
 256                 bytes += size;
 257                 host->size -= size;
 258
 259                 if (host->remain == 0) {
 260                         sdhci_kunmap_sg(host);
 261                         if (sdhci_next_sg(host) == 0) {
 262                                 DBG("PIO transfer: %d bytes\n", bytes);
 263                                 return;
 264                         }
 265                         buffer = sdhci_kmap_sg(host);
 266                 }
 267         }
 268
 269         sdhci_kunmap_sg(host);
 270
 271         DBG("PIO transfer: %d bytes\n", bytes);
 272 }
 273
 274 static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
 275 {
 276         u16 mode;
 277
 278         WARN_ON(host->data);
 279
 280         if (data == NULL) {
 281                 writew(0, host->ioaddr + SDHCI_TRANSFER_MODE);
 282                 return;
 283         }
 284
 285         DBG("blksz %04x blks %04x flags %08x\n",
 286                 data->blksz, data->blocks, data->flags);
 287         DBG("tsac %d ms nsac %d clk\n",
 288                 data->timeout_ns / 1000000, data->timeout_clks);
 289
 290         mode = SDHCI_TRNS_BLK_CNT_EN;
 291         if (data->blocks > 1)
 292                 mode |= SDHCI_TRNS_MULTI;
 293         if (data->flags & MMC_DATA_READ)
 294                 mode |= SDHCI_TRNS_READ;
 295         if (host->flags & SDHCI_USE_DMA)
 296                 mode |= SDHCI_TRNS_DMA;
 297
 298         writew(mode, host->ioaddr + SDHCI_TRANSFER_MODE);
 299
 300         writew(data->blksz, host->ioaddr + SDHCI_BLOCK_SIZE);
 301         writew(data->blocks, host->ioaddr + SDHCI_BLOCK_COUNT);
 302
 303         if (host->flags & SDHCI_USE_DMA) {
 304                 int count;
 305
 306                 count = pci_map_sg(host->chip->pdev, data->sg, data->sg_len,
 307                         (data->flags & MMC_DATA_READ)?PCI_DMA_FROMDEVICE:PCI_DMA_TODEVICE);
 308                 BUG_ON(count != 1);
 309
 310                 writel(sg_dma_address(data->sg), host->ioaddr + SDHCI_DMA_ADDRESS);
 311         } else {
 312                 host->size = data->blksz * data->blocks;
 313
 314                 host->cur_sg = data->sg;
 315                 host->num_sg = data->sg_len;
 316
 317                 host->offset = 0;
 318                 host->remain = host->cur_sg->length;
 319         }
 320 }
 321
 322 static void sdhci_finish_data(struct sdhci_host *host)
 323 {
 324         struct mmc_data *data;
 325         u32 intmask;
 326         u16 blocks;
 327
 328         BUG_ON(!host->data);
 329
 330         data = host->data;
 331         host->data = NULL;
 332
 333         if (host->flags & SDHCI_USE_DMA) {
 334                 pci_unmap_sg(host->chip->pdev, data->sg, data->sg_len,
 335                         (data->flags & MMC_DATA_READ)?PCI_DMA_FROMDEVICE:PCI_DMA_TODEVICE);
 336         } else {
 337                 intmask = readl(host->ioaddr + SDHCI_SIGNAL_ENABLE);
 338                 intmask &= ~(SDHCI_INT_BUF_EMPTY | SDHCI_INT_BUF_FULL);
 339                 writel(intmask, host->ioaddr + SDHCI_SIGNAL_ENABLE);
 340
 341                 intmask = readl(host->ioaddr + SDHCI_INT_ENABLE);
 342                 intmask &= ~(SDHCI_INT_BUF_EMPTY | SDHCI_INT_BUF_FULL);
 343                 writel(intmask, host->ioaddr + SDHCI_INT_ENABLE);
 344         }
 345
 346         /*
 347          * Controller doesn't count down when in single block mode.
 348          */
 349         if ((data->blocks == 1) && (data->error == MMC_ERR_NONE))
 350                 blocks = 0;
 351         else
 352                 blocks = readw(host->ioaddr + SDHCI_BLOCK_COUNT);
 353         data->bytes_xfered = data->blksz * (data->blocks - blocks);
 354
 355         if ((data->error == MMC_ERR_NONE) && blocks) {
 356                 printk(KERN_ERR "%s: Controller signalled completion even "
 357                         "though there were blocks left. Please report this "
 358                         "to " BUGMAIL ".\n", mmc_hostname(host->mmc));
 359                 data->error = MMC_ERR_FAILED;
 360         }
 361
 362         if (host->size != 0) {
 363                 printk(KERN_ERR "%s: %d bytes were left untransferred. "
 364                         "Please report this to " BUGMAIL ".\n",
 365                         mmc_hostname(host->mmc), host->size);
 366                 data->error = MMC_ERR_FAILED;
 367         }
 368
 369         DBG("Ending data transfer (%d bytes)\n", data->bytes_xfered);
 370
 371         if (data->stop) {
 372                 /*
 373                  * The controller needs a reset of internal state machines
 374                  * upon error conditions.
 375                  */
 376                 if (data->error != MMC_ERR_NONE) {
 377                         sdhci_reset(host, SDHCI_RESET_CMD);
 378                         sdhci_reset(host, SDHCI_RESET_DATA);
 379                 }
 380
 381                 sdhci_send_command(host, data->stop);
 382         } else
 383                 tasklet_schedule(&host->finish_tasklet);
 384 }
 385
 386 static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
 387 {
 388         int flags;
 389         unsigned long timeout;
 390
 391         WARN_ON(host->cmd);
 392
 393         DBG("Sending cmd (%x)\n", cmd->opcode);
 394
 395         /* Wait max 10 ms */
 396         timeout = 10;
 397         while (readl(host->ioaddr + SDHCI_PRESENT_STATE) &
 398                 (SDHCI_CMD_INHIBIT | SDHCI_DATA_INHIBIT)) {
 399                 if (timeout == 0) {
 400                         printk(KERN_ERR "%s: Controller never released "
 401                                 "inhibit bits. Please report this to "
 402                                 BUGMAIL ".\n", mmc_hostname(host->mmc));
 403                         sdhci_dumpregs(host);
 404                         cmd->error = MMC_ERR_FAILED;
 405                         tasklet_schedule(&host->finish_tasklet);
 406                         return;
 407                 }
 408                 timeout--;
 409                 mdelay(1);
 410         }
 411
 412         mod_timer(&host->timer, jiffies + 10 * HZ);
 413
 414         host->cmd = cmd;
 415
 416         sdhci_prepare_data(host, cmd->data);
 417
 418         writel(cmd->arg, host->ioaddr + SDHCI_ARGUMENT);
 419
 420         if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) {
 421                 printk(KERN_ERR "%s: Unsupported response type! "
 422                         "Please report this to " BUGMAIL ".\n",
 423                         mmc_hostname(host->mmc));
 424                 cmd->error = MMC_ERR_INVALID;
 425                 tasklet_schedule(&host->finish_tasklet);
 426                 return;
 427         }
 428
 429         if (!(cmd->flags & MMC_RSP_PRESENT))
 430                 flags = SDHCI_CMD_RESP_NONE;
 431         else if (cmd->flags & MMC_RSP_136)
 432                 flags = SDHCI_CMD_RESP_LONG;
 433         else if (cmd->flags & MMC_RSP_BUSY)
 434                 flags = SDHCI_CMD_RESP_SHORT_BUSY;
 435         else
 436                 flags = SDHCI_CMD_RESP_SHORT;
 437
 438         if (cmd->flags & MMC_RSP_CRC)
 439                 flags |= SDHCI_CMD_CRC;
 440         if (cmd->flags & MMC_RSP_OPCODE)
 441                 flags |= SDHCI_CMD_INDEX;
 442         if (cmd->data)
 443                 flags |= SDHCI_CMD_DATA;
 444
 445         writel(SDHCI_MAKE_CMD(cmd->opcode, flags),
 446                 host->ioaddr + SDHCI_COMMAND);
 447 }
 448
 449 static void sdhci_finish_command(struct sdhci_host *host)
 450 {
 451         int i;
 452
 453         BUG_ON(host->cmd == NULL);
 454
 455         if (host->cmd->flags & MMC_RSP_PRESENT) {
 456                 if (host->cmd->flags & MMC_RSP_136) {
 457                         /* CRC is stripped so we need to do some shifting. */
 458                         for (i = 0;i < 4;i++) {
 459                                 host->cmd->resp[i] = readl(host->ioaddr +
 460                                         SDHCI_RESPONSE + (3-i)*4) << 8;
 461                                 if (i != 3)
 462                                         host->cmd->resp[i] |=
 463                                                 readb(host->ioaddr +
 464                                                 SDHCI_RESPONSE + (3-i)*4-1);
 465                         }
 466                 } else {
 467                         host->cmd->resp[0] = readl(host->ioaddr + SDHCI_RESPONSE);
 468                 }
 469         }
 470
 471         host->cmd->error = MMC_ERR_NONE;
 472
 473         DBG("Ending cmd (%x)\n", host->cmd->opcode);
 474
 475         if (host->cmd->data) {
 476                 u32 intmask;
 477
 478                 host->data = host->cmd->data;
 479
 480                 if (!(host->flags & SDHCI_USE_DMA)) {
 481                         /*
 482                          * Don't enable the interrupts until now to make sure we
 483                          * get stable handling of the FIFO.
 484                          */
 485                         intmask = readl(host->ioaddr + SDHCI_INT_ENABLE);
 486                         intmask |= SDHCI_INT_BUF_EMPTY | SDHCI_INT_BUF_FULL;
 487                         writel(intmask, host->ioaddr + SDHCI_INT_ENABLE);
 488
 489                         intmask = readl(host->ioaddr + SDHCI_SIGNAL_ENABLE);
 490                         intmask |= SDHCI_INT_BUF_EMPTY | SDHCI_INT_BUF_FULL;
 491                         writel(intmask, host->ioaddr + SDHCI_SIGNAL_ENABLE);
 492
 493                         /*
 494                          * The buffer interrupts are to unreliable so we
 495                          * start the transfer immediatly.
 496                          */
 497                         sdhci_transfer_pio(host);
 498                 }
 499         } else
 500                 tasklet_schedule(&host->finish_tasklet);
 501
 502         host->cmd = NULL;
 503 }
 504
 505 static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 506 {
 507         int div;
 508         u16 clk;
 509         unsigned long timeout;
 510
 511         if (clock == host->clock)
 512                 return;
 513
 514         writew(0, host->ioaddr + SDHCI_CLOCK_CONTROL);
 515
 516         if (clock == 0)
 517                 goto out;
 518
 519         for (div = 1;div < 256;div *= 2) {
 520                 if ((host->max_clk / div) <= clock)
 521                         break;
 522         }
 523         div >>= 1;
 524
 525         clk = div << SDHCI_DIVIDER_SHIFT;
 526         clk |= SDHCI_CLOCK_INT_EN;
 527         writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL);
 528
 529         /* Wait max 10 ms */
 530         timeout = 10;
 531         while (!((clk = readw(host->ioaddr + SDHCI_CLOCK_CONTROL))
 532                 & SDHCI_CLOCK_INT_STABLE)) {
 533                 if (timeout == 0) {
 534                         printk(KERN_ERR "%s: Internal clock never stabilised. "
 535                                 "Please report this to " BUGMAIL ".\n",
 536                                 mmc_hostname(host->mmc));
 537                         sdhci_dumpregs(host);
 538                         return;
 539                 }
 540                 timeout--;
 541                 mdelay(1);
 542         }
 543
 544         clk |= SDHCI_CLOCK_CARD_EN;
 545         writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL);
 546
 547 out:
 548         host->clock = clock;
 549 }
 550
 551 static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
 552 {
 553         u8 pwr;
 554
 555         if (host->power == power)
 556                 return;
 557
 558         writeb(0, host->ioaddr + SDHCI_POWER_CONTROL);
 559
 560         if (power == (unsigned short)-1)
 561                 goto out;
 562
 563         pwr = SDHCI_POWER_ON;
 564
 565         switch (power) {
 566         case MMC_VDD_170:
 567         case MMC_VDD_180:
 568         case MMC_VDD_190:
 569                 pwr |= SDHCI_POWER_180;
 570                 break;
 571         case MMC_VDD_290:
 572         case MMC_VDD_300:
 573         case MMC_VDD_310:
 574                 pwr |= SDHCI_POWER_300;
 575                 break;
 576         case MMC_VDD_320:
 577         case MMC_VDD_330:
 578         case MMC_VDD_340:
 579                 pwr |= SDHCI_POWER_330;
 580                 break;
 581         default:
 582                 BUG();
 583         }
 584
 585         writeb(pwr, host->ioaddr + SDHCI_POWER_CONTROL);
 586
 587 out:
 588         host->power = power;
 589 }
 590
 591 /*****************************************************************************\
 592  *                                                                           *
 593  * MMC callbacks                                                             *
 594  *                                                                           *
 595 \*****************************************************************************/
 596
 597 static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 598 {
 599         struct sdhci_host *host;
 600         unsigned long flags;
 601
 602         host = mmc_priv(mmc);
 603
 604         spin_lock_irqsave(&host->lock, flags);
 605
 606         WARN_ON(host->mrq != NULL);
 607
 608         sdhci_activate_led(host);
 609
 610         host->mrq = mrq;
 611
 612         if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) {
 613                 host->mrq->cmd->error = MMC_ERR_TIMEOUT;
 614                 tasklet_schedule(&host->finish_tasklet);
 615         } else
 616                 sdhci_send_command(host, mrq->cmd);
 617
 618         spin_unlock_irqrestore(&host->lock, flags);
 619 }
 620
 621 static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 622 {
 623         struct sdhci_host *host;
 624         unsigned long flags;
 625         u8 ctrl;
 626
 627         host = mmc_priv(mmc);
 628
 629         spin_lock_irqsave(&host->lock, flags);
 630
 631         /*
 632          * Reset the chip on each power off.
 633          * Should clear out any weird states.
 634          */
 635         if (ios->power_mode == MMC_POWER_OFF) {
 636                 writel(0, host->ioaddr + SDHCI_SIGNAL_ENABLE);
 637                 sdhci_init(host);
 638         }
 639
 640         sdhci_set_clock(host, ios->clock);
 641
 642         if (ios->power_mode == MMC_POWER_OFF)
 643                 sdhci_set_power(host, -1);
 644         else
 645                 sdhci_set_power(host, ios->vdd);
 646
 647         ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
 648         if (ios->bus_width == MMC_BUS_WIDTH_4)
 649                 ctrl |= SDHCI_CTRL_4BITBUS;
 650         else
 651                 ctrl &= ~SDHCI_CTRL_4BITBUS;
 652         writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
 653
 654         spin_unlock_irqrestore(&host->lock, flags);
 655 }
 656
 657 static int sdhci_get_ro(struct mmc_host *mmc)
 658 {
 659         struct sdhci_host *host;
 660         unsigned long flags;
 661         int present;
 662
 663         host = mmc_priv(mmc);
 664
 665         spin_lock_irqsave(&host->lock, flags);
 666
 667         present = readl(host->ioaddr + SDHCI_PRESENT_STATE);
 668
 669         spin_unlock_irqrestore(&host->lock, flags);
 670
 671         return !(present & SDHCI_WRITE_PROTECT);
 672 }
 673
 674 static struct mmc_host_ops sdhci_ops = {
 675         .request        = sdhci_request,
 676         .set_ios        = sdhci_set_ios,
 677         .get_ro         = sdhci_get_ro,
 678 };
 679
 680 /*****************************************************************************\
 681  *                                                                           *
 682  * Tasklets                                                                  *
 683  *                                                                           *
 684 \*****************************************************************************/
 685
 686 static void sdhci_tasklet_card(unsigned long param)
 687 {
 688         struct sdhci_host *host;
 689         unsigned long flags;
 690
 691         host = (struct sdhci_host*)param;
 692
 693         spin_lock_irqsave(&host->lock, flags);
 694
 695         if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) {
 696                 if (host->mrq) {
 697                         printk(KERN_ERR "%s: Card removed during transfer!\n",
 698                                 mmc_hostname(host->mmc));
 699                         printk(KERN_ERR "%s: Resetting controller.\n",
 700                                 mmc_hostname(host->mmc));
 701
 702                         sdhci_reset(host, SDHCI_RESET_CMD);
 703                         sdhci_reset(host, SDHCI_RESET_DATA);
 704
 705                         host->mrq->cmd->error = MMC_ERR_FAILED;
 706                         tasklet_schedule(&host->finish_tasklet);
 707                 }
 708         }
 709
 710         spin_unlock_irqrestore(&host->lock, flags);
 711
 712         mmc_detect_change(host->mmc, msecs_to_jiffies(500));
 713 }
 714
 715 static void sdhci_tasklet_finish(unsigned long param)
 716 {
 717         struct sdhci_host *host;
 718         unsigned long flags;
 719         struct mmc_request *mrq;
 720
 721         host = (struct sdhci_host*)param;
 722
 723         spin_lock_irqsave(&host->lock, flags);
 724
 725         del_timer(&host->timer);
 726
 727         mrq = host->mrq;
 728
 729         DBG("Ending request, cmd (%x)\n", mrq->cmd->opcode);
 730
 731         /*
 732          * The controller needs a reset of internal state machines
 733          * upon error conditions.
 734          */
 735         if ((mrq->cmd->error != MMC_ERR_NONE) ||
 736                 (mrq->data && ((mrq->data->error != MMC_ERR_NONE) ||
 737                 (mrq->data->stop && (mrq->data->stop->error != MMC_ERR_NONE))))) {
 738                 sdhci_reset(host, SDHCI_RESET_CMD);
 739                 sdhci_reset(host, SDHCI_RESET_DATA);
 740         }
 741
 742         host->mrq = NULL;
 743         host->cmd = NULL;
 744         host->data = NULL;
 745
 746         sdhci_deactivate_led(host);
 747
 748         spin_unlock_irqrestore(&host->lock, flags);
 749
 750         mmc_request_done(host->mmc, mrq);
 751 }
 752
 753 static void sdhci_timeout_timer(unsigned long data)
 754 {
 755         struct sdhci_host *host;
 756         unsigned long flags;
 757
 758         host = (struct sdhci_host*)data;
 759
 760         spin_lock_irqsave(&host->lock, flags);
 761
 762         if (host->mrq) {
 763                 printk(KERN_ERR "%s: Timeout waiting for hardware interrupt. "
 764                         "Please report this to " BUGMAIL ".\n",
 765                         mmc_hostname(host->mmc));
 766                 sdhci_dumpregs(host);
 767
 768                 if (host->data) {
 769                         host->data->error = MMC_ERR_TIMEOUT;
 770                         sdhci_finish_data(host);
 771                 } else {
 772                         if (host->cmd)
 773                                 host->cmd->error = MMC_ERR_TIMEOUT;
 774                         else
 775                                 host->mrq->cmd->error = MMC_ERR_TIMEOUT;
 776
 777                         tasklet_schedule(&host->finish_tasklet);
 778                 }
 779         }
 780
 781         spin_unlock_irqrestore(&host->lock, flags);
 782 }
 783
 784 /*****************************************************************************\
 785  *                                                                           *
 786  * Interrupt handling                                                        *
 787  *                                                                           *
 788 \*****************************************************************************/
 789
 790 static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask)
 791 {
 792         BUG_ON(intmask == 0);
 793
 794         if (!host->cmd) {
 795                 printk(KERN_ERR "%s: Got command interrupt even though no "
 796                         "command operation was in progress.\n",
 797                         mmc_hostname(host->mmc));
 798                 printk(KERN_ERR "%s: Please report this to " BUGMAIL ".\n",
 799                         mmc_hostname(host->mmc));
 800                 sdhci_dumpregs(host);
 801                 return;
 802         }
 803
 804         if (intmask & SDHCI_INT_RESPONSE)
 805                 sdhci_finish_command(host);
 806         else {
 807                 if (intmask & SDHCI_INT_TIMEOUT)
 808                         host->cmd->error = MMC_ERR_TIMEOUT;
 809                 else if (intmask & SDHCI_INT_CRC)
 810                         host->cmd->error = MMC_ERR_BADCRC;
 811                 else if (intmask & (SDHCI_INT_END_BIT | SDHCI_INT_INDEX))
 812                         host->cmd->error = MMC_ERR_FAILED;
 813                 else
 814                         host->cmd->error = MMC_ERR_INVALID;
 815
 816                 tasklet_schedule(&host->finish_tasklet);
 817         }
 818 }
 819
 820 static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
 821 {
 822         BUG_ON(intmask == 0);
 823
 824         if (!host->data) {
 825                 /*
 826                  * A data end interrupt is sent together with the response
 827                  * for the stop command.
 828                  */
 829                 if (intmask & SDHCI_INT_DATA_END)
 830                         return;
 831
 832                 printk(KERN_ERR "%s: Got data interrupt even though no "
 833                         "data operation was in progress.\n",
 834                         mmc_hostname(host->mmc));
 835                 printk(KERN_ERR "%s: Please report this to " BUGMAIL ".\n",
 836                         mmc_hostname(host->mmc));
 837                 sdhci_dumpregs(host);
 838
 839                 return;
 840         }
 841
 842         if (intmask & SDHCI_INT_DATA_TIMEOUT)
 843                 host->data->error = MMC_ERR_TIMEOUT;
 844         else if (intmask & SDHCI_INT_DATA_CRC)
 845                 host->data->error = MMC_ERR_BADCRC;
 846         else if (intmask & SDHCI_INT_DATA_END_BIT)
 847                 host->data->error = MMC_ERR_FAILED;
 848
 849         if (host->data->error != MMC_ERR_NONE)
 850                 sdhci_finish_data(host);
 851         else {
 852                 if (intmask & (SDHCI_INT_BUF_FULL | SDHCI_INT_BUF_EMPTY))
 853                         sdhci_transfer_pio(host);
 854
 855                 if (intmask & SDHCI_INT_DATA_END)
 856                         sdhci_finish_data(host);
 857         }
 858 }
 859
 860 static irqreturn_t sdhci_irq(int irq, void *dev_id, struct pt_regs *regs)
 861 {
 862         irqreturn_t result;
 863         struct sdhci_host* host = dev_id;
 864         u32 intmask;
 865
 866         spin_lock(&host->lock);
 867
 868         intmask = readl(host->ioaddr + SDHCI_INT_STATUS);
 869
 870         if (!intmask) {
 871                 result = IRQ_NONE;
 872                 goto out;
 873         }
 874
 875         DBG("*** %s got interrupt: 0x%08x\n", host->slot_descr, intmask);
 876
 877         if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE))
 878                 tasklet_schedule(&host->card_tasklet);
 879
 880         if (intmask & SDHCI_INT_CMD_MASK) {
 881                 sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK);
 882
 883                 writel(intmask & SDHCI_INT_CMD_MASK,
 884                         host->ioaddr + SDHCI_INT_STATUS);
 885         }
 886
 887         if (intmask & SDHCI_INT_DATA_MASK) {
 888                 sdhci_data_irq(host, intmask & SDHCI_INT_DATA_MASK);
 889
 890                 writel(intmask & SDHCI_INT_DATA_MASK,
 891                         host->ioaddr + SDHCI_INT_STATUS);
 892         }
 893
 894         intmask &= ~(SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK);
 895
 896         if (intmask & SDHCI_INT_CARD_INT) {
 897                 printk(KERN_ERR "%s: Unexpected card interrupt. Please "
 898                         "report this to " BUGMAIL ".\n",
 899                         mmc_hostname(host->mmc));
 900                 sdhci_dumpregs(host);
 901         }
 902
 903         if (intmask & SDHCI_INT_BUS_POWER) {
 904                 printk(KERN_ERR "%s: Unexpected bus power interrupt. Please "
 905                         "report this to " BUGMAIL ".\n",
 906                         mmc_hostname(host->mmc));
 907                 sdhci_dumpregs(host);
 908         }
 909
 910         if (intmask & SDHCI_INT_ACMD12ERR) {
 911                 printk(KERN_ERR "%s: Unexpected auto CMD12 error. Please "
 912                         "report this to " BUGMAIL ".\n",
 913                         mmc_hostname(host->mmc));
 914                 sdhci_dumpregs(host);
 915
 916                 writew(~0, host->ioaddr + SDHCI_ACMD12_ERR);
 917         }
 918
 919         if (intmask)
 920                 writel(intmask, host->ioaddr + SDHCI_INT_STATUS);
 921
 922         result = IRQ_HANDLED;
 923
 924 out:
 925         spin_unlock(&host->lock);
 926
 927         return result;
 928 }
 929
 930 /*****************************************************************************\
 931  *                                                                           *
 932  * Suspend/resume                                                            *
 933  *                                                                           *
 934 \*****************************************************************************/
 935
 936 #ifdef CONFIG_PM
 937
 938 static int sdhci_suspend (struct pci_dev *pdev, pm_message_t state)
 939 {
 940         struct sdhci_chip *chip;
 941         int i, ret;
 942
 943         chip = pci_get_drvdata(pdev);
 944         if (!chip)
 945                 return 0;
 946
 947         DBG("Suspending...\n");
 948
 949         for (i = 0;i < chip->num_slots;i++) {
 950                 if (!chip->hosts[i])
 951                         continue;
 952                 ret = mmc_suspend_host(chip->hosts[i]->mmc, state);
 953                 if (ret) {
 954                         for (i--;i >= 0;i--)
 955                                 mmc_resume_host(chip->hosts[i]->mmc);
 956                         return ret;
 957                 }
 958         }
 959
 960         pci_save_state(pdev);
 961         pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
 962         pci_disable_device(pdev);
 963         pci_set_power_state(pdev, pci_choose_state(pdev, state));
 964
 965         return 0;
 966 }
 967
 968 static int sdhci_resume (struct pci_dev *pdev)
 969 {
 970         struct sdhci_chip *chip;
 971         int i, ret;
 972
 973         chip = pci_get_drvdata(pdev);
 974         if (!chip)
 975                 return 0;
 976
 977         DBG("Resuming...\n");
 978
 979         pci_set_power_state(pdev, PCI_D0);
 980         pci_restore_state(pdev);
 981         pci_enable_device(pdev);
 982
 983         for (i = 0;i < chip->num_slots;i++) {
 984                 if (!chip->hosts[i])
 985                         continue;
 986                 if (chip->hosts[i]->flags & SDHCI_USE_DMA)
 987                         pci_set_master(pdev);
 988                 sdhci_init(chip->hosts[i]);
 989                 ret = mmc_resume_host(chip->hosts[i]->mmc);
 990                 if (ret)
 991                         return ret;
 992         }
 993
 994         return 0;
 995 }
 996
 997 #else /* CONFIG_PM */
 998
 999 #define sdhci_suspend NULL
1000 #define sdhci_resume NULL
1001
1002 #endif /* CONFIG_PM */
1003
1004 /*****************************************************************************\
1005  *                                                                           *
1006  * Device probing/removal                                                    *
1007  *                                                                           *
1008 \*****************************************************************************/
1009
1010 static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
1011 {
1012         int ret;
1013         struct sdhci_chip *chip;
1014         struct mmc_host *mmc;
1015         struct sdhci_host *host;
1016
1017         u8 first_bar;
1018         unsigned int caps;
1019
1020         chip = pci_get_drvdata(pdev);
1021         BUG_ON(!chip);
1022
1023         ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
1024         if (ret)
1025                 return ret;
1026
1027         first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
1028
1029         if (first_bar > 5) {
1030                 printk(KERN_ERR DRIVER_NAME ": Invalid first BAR. Aborting.\n");
1031                 return -ENODEV;
1032         }
1033
1034         if (!(pci_resource_flags(pdev, first_bar + slot) & IORESOURCE_MEM)) {
1035                 printk(KERN_ERR DRIVER_NAME ": BAR is not iomem. Aborting.\n");
1036                 return -ENODEV;
1037         }
1038
1039         if (pci_resource_len(pdev, first_bar + slot) != 0x100) {
1040                 printk(KERN_ERR DRIVER_NAME ": Invalid iomem size. Aborting.\n");
1041                 return -ENODEV;
1042         }
1043
1044         mmc = mmc_alloc_host(sizeof(struct sdhci_host), &pdev->dev);
1045         if (!mmc)
1046                 return -ENOMEM;
1047
1048         host = mmc_priv(mmc);
1049         host->mmc = mmc;
1050
1051         host->bar = first_bar + slot;
1052
1053         host->addr = pci_resource_start(pdev, host->bar);
1054         host->irq = pdev->irq;
1055
1056         DBG("slot %d at 0x%08lx, irq %d\n", slot, host->addr, host->irq);
1057
1058         snprintf(host->slot_descr, 20, "sdhci:slot%d", slot);
1059
1060         ret = pci_request_region(pdev, host->bar, host->slot_descr);
1061         if (ret)
1062                 goto free;
1063
1064         host->ioaddr = ioremap_nocache(host->addr,
1065                 pci_resource_len(pdev, host->bar));
1066         if (!host->ioaddr) {
1067                 ret = -ENOMEM;
1068                 goto release;
1069         }
1070
1071         caps = readl(host->ioaddr + SDHCI_CAPABILITIES);
1072
1073         if ((caps & SDHCI_CAN_DO_DMA) && ((pdev->class & 0x0000FF) == 0x01))
1074                 host->flags |= SDHCI_USE_DMA;
1075
1076         if (host->flags & SDHCI_USE_DMA) {
1077                 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
1078                         printk(KERN_WARNING "%s: No suitable DMA available. "
1079                                 "Falling back to PIO.\n", host->slot_descr);
1080                         host->flags &= ~SDHCI_USE_DMA;
1081                 }
1082         }
1083
1084         if (host->flags & SDHCI_USE_DMA)
1085                 pci_set_master(pdev);
1086         else /* XXX: Hack to get MMC layer to avoid highmem */
1087                 pdev->dma_mask = 0;
1088
1089         host->max_clk =
1090                 (caps & SDHCI_CLOCK_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT;
1091         if (host->max_clk == 0) {
1092                 printk(KERN_ERR "%s: Hardware doesn't specify base clock "
1093                         "frequency.\n", host->slot_descr);
1094                 ret = -ENODEV;
1095                 goto unmap;
1096         }
1097         host->max_clk *= 1000000;
1098
1099         /*
1100          * Set host parameters.
1101          */
1102         mmc->ops = &sdhci_ops;
1103         mmc->f_min = host->max_clk / 256;
1104         mmc->f_max = host->max_clk;
1105         mmc->caps = MMC_CAP_4_BIT_DATA;
1106
1107         mmc->ocr_avail = 0;
1108         if (caps & SDHCI_CAN_VDD_330)
1109                 mmc->ocr_avail |= MMC_VDD_32_33|MMC_VDD_33_34;
1110         else if (caps & SDHCI_CAN_VDD_300)
1111                 mmc->ocr_avail |= MMC_VDD_29_30|MMC_VDD_30_31;
1112         else if (caps & SDHCI_CAN_VDD_180)
1113                 mmc->ocr_avail |= MMC_VDD_17_18|MMC_VDD_18_19;
1114
1115         if (mmc->ocr_avail == 0) {
1116                 printk(KERN_ERR "%s: Hardware doesn't report any "
1117                         "support voltages.\n", host->slot_descr);
1118                 ret = -ENODEV;
1119                 goto unmap;
1120         }
1121
1122         spin_lock_init(&host->lock);
1123
1124         /*
1125          * Maximum number of segments. Hardware cannot do scatter lists.
1126          */
1127         if (host->flags & SDHCI_USE_DMA)
1128                 mmc->max_hw_segs = 1;
1129         else
1130                 mmc->max_hw_segs = 16;
1131         mmc->max_phys_segs = 16;
1132
1133         /*
1134          * Maximum number of sectors in one transfer. Limited by sector
1135          * count register.
1136          */
1137         mmc->max_sectors = 0x3FFF;
1138
1139         /*
1140          * Maximum segment size. Could be one segment with the maximum number
1141          * of sectors.
1142          */
1143         mmc->max_seg_size = mmc->max_sectors * 512;
1144
1145         /*
1146          * Init tasklets.
1147          */
1148         tasklet_init(&host->card_tasklet,
1149                 sdhci_tasklet_card, (unsigned long)host);
1150         tasklet_init(&host->finish_tasklet,
1151                 sdhci_tasklet_finish, (unsigned long)host);
1152
1153         setup_timer(&host->timer, sdhci_timeout_timer, (long)host);
1154
1155         ret = request_irq(host->irq, sdhci_irq, SA_SHIRQ,
1156                 host->slot_descr, host);
1157         if (ret)
1158                 goto untasklet;
1159
1160         sdhci_init(host);
1161
1162 #ifdef CONFIG_MMC_DEBUG
1163         sdhci_dumpregs(host);
1164 #endif
1165
1166         host->chip = chip;
1167         chip->hosts[slot] = host;
1168
1169         mmc_add_host(mmc);
1170
1171         printk(KERN_INFO "%s: SDHCI at 0x%08lx irq %d %s\n", mmc_hostname(mmc),
1172                 host->addr, host->irq,
1173                 (host->flags & SDHCI_USE_DMA)?"DMA":"PIO");
1174
1175         return 0;
1176
1177 untasklet:
1178         tasklet_kill(&host->card_tasklet);
1179         tasklet_kill(&host->finish_tasklet);
1180 unmap:
1181         iounmap(host->ioaddr);
1182 release:
1183         pci_release_region(pdev, host->bar);
1184 free:
1185         mmc_free_host(mmc);
1186
1187         return ret;
1188 }
1189
1190 static void sdhci_remove_slot(struct pci_dev *pdev, int slot)
1191 {
1192         struct sdhci_chip *chip;
1193         struct mmc_host *mmc;
1194         struct sdhci_host *host;
1195
1196         chip = pci_get_drvdata(pdev);
1197         host = chip->hosts[slot];
1198         mmc = host->mmc;
1199
1200         chip->hosts[slot] = NULL;
1201
1202         mmc_remove_host(mmc);
1203
1204         sdhci_reset(host, SDHCI_RESET_ALL);
1205
1206         free_irq(host->irq, host);
1207
1208         del_timer_sync(&host->timer);
1209
1210         tasklet_kill(&host->card_tasklet);
1211         tasklet_kill(&host->finish_tasklet);
1212
1213         iounmap(host->ioaddr);
1214
1215         pci_release_region(pdev, host->bar);
1216
1217         mmc_free_host(mmc);
1218 }
1219
1220 static int __devinit sdhci_probe(struct pci_dev *pdev,
1221         const struct pci_device_id *ent)
1222 {
1223         int ret, i;
1224         u8 slots, rev;
1225         struct sdhci_chip *chip;
1226
1227         BUG_ON(pdev == NULL);
1228         BUG_ON(ent == NULL);
1229
1230         pci_read_config_byte(pdev, PCI_CLASS_REVISION, &rev);
1231
1232         printk(KERN_INFO DRIVER_NAME
1233                 ": SDHCI controller found at %s [%04x:%04x] (rev %x)\n",
1234                 pci_name(pdev), (int)pdev->vendor, (int)pdev->device,
1235                 (int)rev);
1236
1237         ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
1238         if (ret)
1239                 return ret;
1240
1241         slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
1242         DBG("found %d slot(s)\n", slots);
1243         if (slots == 0)
1244                 return -ENODEV;
1245
1246         ret = pci_enable_device(pdev);
1247         if (ret)
1248                 return ret;
1249
1250         chip = kzalloc(sizeof(struct sdhci_chip) +
1251                 sizeof(struct sdhci_host*) * slots, GFP_KERNEL);
1252         if (!chip) {
1253                 ret = -ENOMEM;
1254                 goto err;
1255         }
1256
1257         chip->pdev = pdev;
1258
1259         chip->num_slots = slots;
1260         pci_set_drvdata(pdev, chip);
1261
1262         for (i = 0;i < slots;i++) {
1263                 ret = sdhci_probe_slot(pdev, i);
1264                 if (ret) {
1265                         for (i--;i >= 0;i--)
1266                                 sdhci_remove_slot(pdev, i);
1267                         goto free;
1268                 }
1269         }
1270
1271         return 0;
1272
1273 free:
1274         pci_set_drvdata(pdev, NULL);
1275         kfree(chip);
1276
1277 err:
1278         pci_disable_device(pdev);
1279         return ret;
1280 }
1281
1282 static void __devexit sdhci_remove(struct pci_dev *pdev)
1283 {
1284         int i;
1285         struct sdhci_chip *chip;
1286
1287         chip = pci_get_drvdata(pdev);
1288
1289         if (chip) {
1290                 for (i = 0;i < chip->num_slots;i++)
1291                         sdhci_remove_slot(pdev, i);
1292
1293                 pci_set_drvdata(pdev, NULL);
1294
1295                 kfree(chip);
1296         }
1297
1298         pci_disable_device(pdev);
1299 }
1300
1301 static struct pci_driver sdhci_driver = {
1302         .name =         DRIVER_NAME,
1303         .id_table =     pci_ids,
1304         .probe =        sdhci_probe,
1305         .remove =       __devexit_p(sdhci_remove),
1306         .suspend =      sdhci_suspend,
1307         .resume =       sdhci_resume,
1308 };
1309
1310 /*****************************************************************************\
1311  *                                                                           *
1312  * Driver init/exit                                                          *
1313  *                                                                           *
1314 \*****************************************************************************/
1315
1316 static int __init sdhci_drv_init(void)
1317 {
1318         printk(KERN_INFO DRIVER_NAME
1319                 ": Secure Digital Host Controller Interface driver, "
1320                 DRIVER_VERSION "\n");
1321         printk(KERN_INFO DRIVER_NAME ": Copyright(c) Pierre Ossman\n");
1322
1323         return pci_register_driver(&sdhci_driver);
1324 }
1325
1326 static void __exit sdhci_drv_exit(void)
1327 {
1328         DBG("Exiting\n");
1329
1330         pci_unregister_driver(&sdhci_driver);
1331 }
1332
1333 module_init(sdhci_drv_init);
1334 module_exit(sdhci_drv_exit);
1335
1336 MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>");
1337 MODULE_DESCRIPTION("Secure Digital Host Controller Interface driver");
1338 MODULE_VERSION(DRIVER_VERSION);
1339 MODULE_LICENSE("GPL");