drivers/mmc/card/block.c

   1 /*
   2  * Block driver for media (i.e., flash cards)
   3  *
   4  * Copyright 2002 Hewlett-Packard Company
   5  * Copyright 2005-2007 Pierre Ossman
   6  *
   7  * Use consistent with the GNU GPL is permitted,
   8  * provided that this copyright notice is
   9  * preserved in its entirety in all copies and derived works.
  10  *
  11  * HEWLETT-PACKARD COMPANY MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
  12  * AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS
  13  * FITNESS FOR ANY PARTICULAR PURPOSE.
  14  *
  15  * Many thanks to Alessandro Rubini and Jonathan Corbet!
  16  *
  17  * Author:  Andrew Christian
  18  *          28 May 2002
  19  */
  20 #include <linux/moduleparam.h>
  21 #include <linux/module.h>
  22 #include <linux/init.h>
  23
  24 #include <linux/kernel.h>
  25 #include <linux/fs.h>
  26 #include <linux/errno.h>
  27 #include <linux/hdreg.h>
  28 #include <linux/kdev_t.h>
  29 #include <linux/blkdev.h>
  30 #if 0   // mask by Victor Yu. 12-02-2008
  31 #include <linux/mutex.h>
  32 #endif
  33 #include <linux/scatterlist.h>
  34
  35 #include <linux/mmc/card.h>
  36 #include <linux/mmc/host.h>
  37 #include <linux/mmc/mmc.h>
  38 #include <linux/mmc/sd.h>
  39
  40 #include <asm/system.h>
  41 #include <asm/uaccess.h>
  42
  43 #include "queue.h"
  44
  45 #if ( defined CONFIG_ARCH_W341 ) || (defined CONFIG_ARCH_W345 ) || ( defined CONFIG_ARCH_W345_IMP1 )
  46 #include <asm/arch/gpio.h>
  47 #endif
  48
  49 #if 1   // add by Victor Yu. 12-02-2008
  50 #undef MMC_BLOCK_MAJOR
  51 #define MMC_BLOCK_MAJOR 121
  52 #endif
  53
  54 /*
  55  * max 8 partitions per card
  56  */
  57 #define MMC_SHIFT       3
  58
  59 #if ( defined CONFIG_ARCH_W341 ) || (defined CONFIG_ARCH_W345 ) || (defined CONFIG_ARCH_W345_IMP1 )
  60 #define SD_LED ( 1 << 19 )
  61 #endif
  62
  63 /*
  64  * There is one mmc_blk_data per slot.
  65  */
  66 struct mmc_blk_data {
  67         spinlock_t      lock;
  68         struct gendisk  *disk;
  69         struct mmc_queue queue;
  70
  71         unsigned int    usage;
  72         unsigned int    block_bits;
  73         unsigned int    read_only;
  74 };
  75
  76 #if 0   // mask by Victor Yu. 12-02-2008
  77 static DEFINE_MUTEX(open_lock);
  78 #else
  79 static DECLARE_MUTEX(open_lock);
  80 #endif
  81
  82 static struct mmc_blk_data *mmc_blk_get(struct gendisk *disk)
  83 {
  84         struct mmc_blk_data *md;
  85
  86 #if 0   // mask by Victor Yu. 12-02-2008
  87         mutex_lock(&open_lock);
  88 #else
  89         down(&open_lock);
  90 #endif
  91         md = disk->private_data;
  92         if (md && md->usage == 0)
  93                 md = NULL;
  94         if (md)
  95                 md->usage++;
  96 #if 0   //mask by Victor Yu. 12-02-2008
  97         mutex_unlock(&open_lock);
  98 #else
  99         up(&open_lock);
 100 #endif
 101
 102         return md;
 103 }
 104
 105 static void mmc_blk_put(struct mmc_blk_data *md)
 106 {
 107 #if 0   // mask by Victor Yu. 12-02-2008
 108         mutex_lock(&open_lock);
 109 #else
 110         down(&open_lock);
 111 #endif
 112         md->usage--;
 113         if (md->usage == 0) {
 114                 put_disk(md->disk);
 115                 kfree(md);
 116         }
 117 #if 0   //mask by Victor Yu. 12-02-2008
 118         mutex_unlock(&open_lock);
 119 #else
 120         up(&open_lock);
 121 #endif
 122 }
 123
 124 static int mmc_blk_open(struct inode *inode, struct file *filp)
 125 {
 126         struct mmc_blk_data *md;
 127         int ret = -ENXIO;
 128
 129         md = mmc_blk_get(inode->i_bdev->bd_disk);
 130         if (md) {
 131                 if (md->usage == 2)
 132                         check_disk_change(inode->i_bdev);
 133                 ret = 0;
 134
 135                 if ((filp->f_mode & FMODE_WRITE) && md->read_only)
 136                         ret = -EROFS;
 137         }
 138
 139         return ret;
 140 }
 141
 142 static int mmc_blk_release(struct inode *inode, struct file *filp)
 143 {
 144         struct mmc_blk_data *md = inode->i_bdev->bd_disk->private_data;
 145
 146         mmc_blk_put(md);
 147         return 0;
 148 }
 149
 150 #if 0   // mask by Victor Yu. 12-02-2008
 151 static int
 152 mmc_blk_getgeo(struct block_device *bdev, struct hd_geometry *geo)
 153 {
 154         geo->cylinders = get_capacity(bdev->bd_disk) / (4 * 16);
 155         geo->heads = 4;
 156         geo->sectors = 16;
 157         return 0;
 158 }
 159 #else
 160 static int
 161 mmc_blk_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg)
 162 {
 163         struct block_device *bdev = inode->i_bdev;
 164
 165         if (cmd == HDIO_GETGEO) {
 166                 struct hd_geometry geo;
 167
 168                 memset(&geo, 0, sizeof(struct hd_geometry));
 169
 170                 geo.cylinders   = get_capacity(bdev->bd_disk) / (4 * 16);
 171                 geo.heads       = 4;
 172                 geo.sectors     = 16;
 173                 geo.start       = get_start_sect(bdev);
 174
 175                 return copy_to_user((void __user *)arg, &geo, sizeof(geo))
 176                         ? -EFAULT : 0;
 177         }
 178
 179         return -ENOTTY;
 180 }
 181 #endif
 182
 183 static struct block_device_operations mmc_bdops = {
 184         .open                   = mmc_blk_open,
 185         .release                = mmc_blk_release,
 186 #if 0   // mask by Victor Yu. 12-02-2008
 187         .getgeo                 = mmc_blk_getgeo,
 188 #else
 189         .ioctl                  = mmc_blk_ioctl,
 190 #endif
 191         .owner                  = THIS_MODULE,
 192 };
 193
 194 struct mmc_blk_request {
 195         struct mmc_request      mrq;
 196         struct mmc_command      cmd;
 197         struct mmc_command      stop;
 198         struct mmc_data         data;
 199 };
 200
 201 static u32 mmc_sd_num_wr_blocks(struct mmc_card *card)
 202 {
 203         int err;
 204         u32 blocks;
 205
 206         struct mmc_request mrq;
 207         struct mmc_command cmd;
 208         struct mmc_data data;
 209         unsigned int timeout_us;
 210
 211         struct scatterlist sg;
 212
 213         memset(&cmd, 0, sizeof(struct mmc_command));
 214
 215         cmd.opcode = MMC_APP_CMD;
 216         cmd.arg = card->rca << 16;
 217         cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
 218
 219         err = mmc_wait_for_cmd(card->host, &cmd, 0);
 220         if ((err != MMC_ERR_NONE) || !(cmd.resp[0] & R1_APP_CMD))
 221                 return (u32)-1;
 222
 223         memset(&cmd, 0, sizeof(struct mmc_command));
 224
 225         cmd.opcode = SD_APP_SEND_NUM_WR_BLKS;
 226         cmd.arg = 0;
 227         cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
 228
 229         memset(&data, 0, sizeof(struct mmc_data));
 230
 231         data.timeout_ns = card->csd.tacc_ns * 100;
 232         data.timeout_clks = card->csd.tacc_clks * 100;
 233
 234         timeout_us = data.timeout_ns / 1000;
 235         timeout_us += data.timeout_clks * 1000 /
 236                 (card->host->ios.clock / 1000);
 237
 238         if (timeout_us > 100000) {
 239                 data.timeout_ns = 100000000;
 240                 data.timeout_clks = 0;
 241         }
 242
 243         data.blksz = 4;
 244         data.blocks = 1;
 245         data.flags = MMC_DATA_READ;
 246         data.sg = &sg;
 247         data.sg_len = 1;
 248
 249         memset(&mrq, 0, sizeof(struct mmc_request));
 250
 251         mrq.cmd = &cmd;
 252         mrq.data = &data;
 253
 254 #if 0   // mask by Victor Yu. 12-02-2008
 255         sg_init_one(&sg, &blocks, 4);
 256 #else
 257         blocks = 0;
 258         sg_init_one(&sg, (u8 *)&blocks, 4);
 259 #endif
 260
 261         mmc_wait_for_req(card->host, &mrq);
 262
 263         if (cmd.error != MMC_ERR_NONE || data.error != MMC_ERR_NONE)
 264                 return (u32)-1;
 265
 266         blocks = ntohl(blocks);
 267
 268         return blocks;
 269 }
 270
 271 static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
 272 {
 273 #if 0   // mask by Victor Yu. 12-03-2008
 274         struct mmc_blk_data *md = mq->data;
 275         struct mmc_card *card = md->queue.card;
 276 #else
 277         struct mmc_blk_data *md;
 278         struct mmc_card *card;
 279 #endif
 280         struct mmc_blk_request brq;
 281         int ret = 1, sg_pos, data_size;
 282
 283
 284 #if 1   // add by Victor Yu. 12-03-2008
 285         md = mq->data;
 286         if ( md == NULL ) {
 287                 return 0;
 288         }
 289         card = md->queue.card;
 290         if ( card == NULL ) {
 291                 return 0;
 292         }
 293         if ( card->host == NULL ) {
 294                 return 0;
 295         }
 296 #endif
 297
 298         mmc_claim_host(card->host);
 299
 300         do {
 301                 struct mmc_command cmd;
 302                 u32 readcmd, writecmd;
 303
 304                 memset(&brq, 0, sizeof(struct mmc_blk_request));
 305                 brq.mrq.cmd = &brq.cmd;
 306                 brq.mrq.data = &brq.data;
 307
 308                 brq.cmd.arg = req->sector;
 309                 if (!mmc_card_blockaddr(card))
 310                         brq.cmd.arg <<= 9;
 311                 brq.cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
 312                 brq.data.blksz = 1 << md->block_bits;
 313                 brq.stop.opcode = MMC_STOP_TRANSMISSION;
 314                 brq.stop.arg = 0;
 315                 brq.stop.flags = MMC_RSP_R1B | MMC_CMD_AC;
 316                 brq.data.blocks = req->nr_sectors >> (md->block_bits - 9);
 317                 if (brq.data.blocks > card->host->max_blk_count)
 318                         brq.data.blocks = card->host->max_blk_count;
 319
 320                 mmc_set_data_timeout(&brq.data, card, rq_data_dir(req) != READ);
 321
 322                 /*
 323                  * If the host doesn't support multiple block writes, force
 324                  * block writes to single block. SD cards are excepted from
 325                  * this rule as they support querying the number of
 326                  * successfully written sectors.
 327                  */
 328                 if (rq_data_dir(req) != READ &&
 329                     !(card->host->caps & MMC_CAP_MULTIWRITE) &&
 330                     !mmc_card_sd(card))
 331                         brq.data.blocks = 1;
 332
 333                 if (brq.data.blocks > 1) {
 334                         brq.data.flags |= MMC_DATA_MULTI;
 335                         brq.mrq.stop = &brq.stop;
 336                         readcmd = MMC_READ_MULTIPLE_BLOCK;
 337                         writecmd = MMC_WRITE_MULTIPLE_BLOCK;
 338                 } else {
 339                         brq.mrq.stop = NULL;
 340                         readcmd = MMC_READ_SINGLE_BLOCK;
 341                         writecmd = MMC_WRITE_BLOCK;
 342                 }
 343
 344                 if (rq_data_dir(req) == READ) {
 345                         brq.cmd.opcode = readcmd;
 346                         brq.data.flags |= MMC_DATA_READ;
 347                 } else {
 348                         brq.cmd.opcode = writecmd;
 349                         brq.data.flags |= MMC_DATA_WRITE;
 350                 }
 351
 352                 brq.data.sg = mq->sg;
 353                 brq.data.sg_len = mmc_queue_map_sg(mq);
 354
 355                 mmc_queue_bounce_pre(mq);
 356
 357                 if (brq.data.blocks !=
 358                     (req->nr_sectors >> (md->block_bits - 9))) {
 359                         data_size = brq.data.blocks * brq.data.blksz;
 360                         for (sg_pos = 0; sg_pos < brq.data.sg_len; sg_pos++) {
 361                                 data_size -= mq->sg[sg_pos].length;
 362                                 if (data_size <= 0) {
 363                                         mq->sg[sg_pos].length += data_size;
 364                                         sg_pos++;
 365                                         break;
 366                                 }
 367                         }
 368                         brq.data.sg_len = sg_pos;
 369                 }
 370
 371                 mmc_wait_for_req(card->host, &brq.mrq);
 372
 373                 mmc_queue_bounce_post(mq);
 374
 375                 if (brq.cmd.error) {
 376                         printk(KERN_ERR "%s: error %d sending read/write command\n",
 377                                req->rq_disk->disk_name, brq.cmd.error);
 378                         goto cmd_err;
 379                 }
 380
 381                 if (brq.data.error) {
 382                         printk(KERN_ERR "%s: error %d transferring data\n",
 383                                req->rq_disk->disk_name, brq.data.error);
 384                         goto cmd_err;
 385                 }
 386
 387                 if (brq.stop.error) {
 388                         printk(KERN_ERR "%s: error %d sending stop command\n",
 389                                req->rq_disk->disk_name, brq.stop.error);
 390                         goto cmd_err;
 391                 }
 392
 393                 if (rq_data_dir(req) != READ) {
 394                         do {
 395                                 int err;
 396
 397                                 cmd.opcode = MMC_SEND_STATUS;
 398                                 cmd.arg = card->rca << 16;
 399                                 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
 400                                 err = mmc_wait_for_cmd(card->host, &cmd, 5);
 401                                 if (err) {
 402                                         printk(KERN_ERR "%s: error %d requesting status\n",
 403                                                req->rq_disk->disk_name, err);
 404                                         goto cmd_err;
 405                                 }
 406                         } while (!(cmd.resp[0] & R1_READY_FOR_DATA));
 407
 408 #if 0
 409                         if (cmd.resp[0] & ~0x00000900)
 410                                 printk(KERN_ERR "%s: status = %08x\n",
 411                                        req->rq_disk->disk_name, cmd.resp[0]);
 412                         if (mmc_decode_status(cmd.resp))
 413                                 goto cmd_err;
 414 #endif
 415                 }
 416
 417                 /*
 418                  * A block was successfully transferred.
 419                  */
 420                 spin_lock_irq(&md->lock);
 421                 ret = end_that_request_chunk(req, 1, brq.data.bytes_xfered);
 422                 if (!ret) {
 423                         /*
 424                          * The whole request completed successfully.
 425                          */
 426                         add_disk_randomness(req->rq_disk);
 427                         blkdev_dequeue_request(req);
 428 #if 0   // mask by Victor Yu. 12-02-2008
 429                         end_that_request_last(req, 1);
 430 #else
 431                         end_that_request_last(req);
 432 #endif
 433                 }
 434                 spin_unlock_irq(&md->lock);
 435         } while (ret);
 436
 437         mmc_release_host(card->host);
 438
 439         return 1;
 440
 441  cmd_err:
 442         /*
 443          * If this is an SD card and we're writing, we can first
 444          * mark the known good sectors as ok.
 445          *
 446          * If the card is not SD, we can still ok written sectors
 447          * if the controller can do proper error reporting.
 448          *
 449          * For reads we just fail the entire chunk as that should
 450          * be safe in all cases.
 451          */
 452         if (rq_data_dir(req) != READ && mmc_card_sd(card)) {
 453                 u32 blocks;
 454                 unsigned int bytes;
 455
 456                 blocks = mmc_sd_num_wr_blocks(card);
 457                 if (blocks != (u32)-1) {
 458                         if (card->csd.write_partial)
 459                                 bytes = blocks << md->block_bits;
 460                         else
 461                                 bytes = blocks << 9;
 462                         spin_lock_irq(&md->lock);
 463                         ret = end_that_request_chunk(req, 1, bytes);
 464                         spin_unlock_irq(&md->lock);
 465                 }
 466         } else if (rq_data_dir(req) != READ &&
 467                    (card->host->caps & MMC_CAP_MULTIWRITE)) {
 468                 spin_lock_irq(&md->lock);
 469                 ret = end_that_request_chunk(req, 1, brq.data.bytes_xfered);
 470                 spin_unlock_irq(&md->lock);
 471         }
 472
 473         mmc_release_host(card->host);
 474
 475         spin_lock_irq(&md->lock);
 476         while (ret) {
 477                 ret = end_that_request_chunk(req, 0,
 478                                 req->current_nr_sectors << 9);
 479         }
 480
 481         add_disk_randomness(req->rq_disk);
 482         blkdev_dequeue_request(req);
 483 #if 0   // mask by Victor Yu. 12-02-2008
 484         end_that_request_last(req, 0);
 485 #else
 486         end_that_request_last(req);
 487 #endif
 488         spin_unlock_irq(&md->lock);
 489
 490         return 0;
 491 }
 492
 493 #define MMC_NUM_MINORS  (256 >> MMC_SHIFT)
 494
 495 static unsigned long dev_use[MMC_NUM_MINORS/(8*sizeof(unsigned long))];
 496
 497 static inline int mmc_blk_readonly(struct mmc_card *card)
 498 {
 499         return mmc_card_readonly(card) ||
 500                !(card->csd.cmdclass & CCC_BLOCK_WRITE);
 501 }
 502
 503 static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
 504 {
 505         struct mmc_blk_data *md;
 506         int devidx, ret;
 507
 508         devidx = find_first_zero_bit(dev_use, MMC_NUM_MINORS);
 509         if (devidx >= MMC_NUM_MINORS)
 510                 return ERR_PTR(-ENOSPC);
 511         __set_bit(devidx, dev_use);
 512
 513 #if 0   // mask by Victor Yu. 12-02-2008
 514         md = kzalloc(sizeof(struct mmc_blk_data), GFP_KERNEL);
 515 #else
 516         md = kmalloc(sizeof(struct mmc_blk_data), GFP_KERNEL);
 517 #endif
 518         if (!md) {
 519                 ret = -ENOMEM;
 520                 goto out;
 521         }
 522
 523 #if 1   // mask by Victor Yu. 12-02-2008
 524         memset(md, 0, sizeof(struct mmc_blk_data));
 525 #endif
 526
 527
 528         /*
 529          * Set the read-only status based on the supported commands
 530          * and the write protect switch.
 531          */
 532         md->read_only = mmc_blk_readonly(card);
 533
 534         /*
 535          * Both SD and MMC specifications state (although a bit
 536          * unclearly in the MMC case) that a block size of 512
 537          * bytes must always be supported by the card.
 538          */
 539         md->block_bits = 9;
 540
 541         md->disk = alloc_disk(1 << MMC_SHIFT);
 542         if (md->disk == NULL) {
 543                 ret = -ENOMEM;
 544                 goto err_kfree;
 545         }
 546
 547         spin_lock_init(&md->lock);
 548         md->usage = 1;
 549
 550         ret = mmc_init_queue(&md->queue, card, &md->lock);
 551         if (ret)
 552                 goto err_putdisk;
 553
 554         md->queue.issue_fn = mmc_blk_issue_rq;
 555         md->queue.data = md;
 556
 557         md->disk->major = MMC_BLOCK_MAJOR;
 558         md->disk->first_minor = devidx << MMC_SHIFT;
 559         md->disk->fops = &mmc_bdops;
 560         md->disk->private_data = md;
 561         md->disk->queue = md->queue.queue;
 562         md->disk->driverfs_dev = &card->dev;
 563
 564         /*
 565          * As discussed on lkml, GENHD_FL_REMOVABLE should:
 566          *
 567          * - be set for removable media with permanent block devices
 568          * - be unset for removable block devices with permanent media
 569          *
 570          * Since MMC block devices clearly fall under the second
 571          * case, we do not set GENHD_FL_REMOVABLE.  Userspace
 572          * should use the block device creation/destruction hotplug
 573          * messages to tell when the card is present.
 574          */
 575
 576         sprintf(md->disk->disk_name, "mmcblk%d", devidx);
 577
 578         blk_queue_hardsect_size(md->queue.queue, 1 << md->block_bits);
 579
 580         if (!mmc_card_sd(card) && mmc_card_blockaddr(card)) {
 581                 /*
 582                  * The EXT_CSD sector count is in number or 512 byte
 583                  * sectors.
 584                  */
 585                 set_capacity(md->disk, card->ext_csd.sectors);
 586         } else {
 587                 /*
 588                  * The CSD capacity field is in units of read_blkbits.
 589                  * set_capacity takes units of 512 bytes.
 590                  */
 591                 set_capacity(md->disk,
 592                         card->csd.capacity << (card->csd.read_blkbits - 9));
 593         }
 594         return md;
 595
 596  err_putdisk:
 597         put_disk(md->disk);
 598  err_kfree:
 599         kfree(md);
 600  out:
 601         return ERR_PTR(ret);
 602 }
 603
 604 static int
 605 mmc_blk_set_blksize(struct mmc_blk_data *md, struct mmc_card *card)
 606 {
 607         struct mmc_command cmd;
 608         int err;
 609
 610         /* Block-addressed cards ignore MMC_SET_BLOCKLEN. */
 611         if (mmc_card_blockaddr(card))
 612                 return 0;
 613
 614         mmc_claim_host(card->host);
 615         cmd.opcode = MMC_SET_BLOCKLEN;
 616         cmd.arg = 1 << md->block_bits;
 617         cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
 618         err = mmc_wait_for_cmd(card->host, &cmd, 5);
 619         mmc_release_host(card->host);
 620
 621         if (err) {
 622                 printk(KERN_ERR "%s: unable to set block size to %d: %d\n",
 623                         md->disk->disk_name, cmd.arg, err);
 624                 return -EINVAL;
 625         }
 626
 627         return 0;
 628 }
 629
 630 #if 1   // add by Victor Yu. 12-15-2005
 631 #include        <linux/kmod.h>
 632 static void     mountsd(char *action)
 633 {
 634         char    *argv[2], **envp, *buf, *scratch;
 635         int     i=0;
 636
 637         if ( in_interrupt() )
 638                 return;
 639         if ( !current->fs->root )
 640                 return;
 641         if ( !(envp=(char **)kmalloc(10*sizeof(char *), GFP_KERNEL)) )
 642                 return;
 643         if ( !(buf=kmalloc(256, GFP_KERNEL)) )
 644                 return;
 645         argv[0] = "/bin/sdpnp";
 646         argv[1] = 0;
 647         envp[i++] = "HOME=/";
 648         envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
 649         scratch = buf;
 650         envp[i++] = scratch;
 651         scratch += sprintf(scratch, "ACTION=%s", action) + 1;
 652         envp[i++] = 0;
 653         call_usermodehelper(argv[0], argv, envp, 0);
 654         kfree(envp);
 655         kfree(buf);
 656 }
 657 #endif  // 12-15-2005
 658
 659 static int mmc_blk_probe(struct mmc_card *card)
 660 {
 661         struct mmc_blk_data *md;
 662         int err;
 663
 664         /*
 665          * Check that the card supports the command class(es) we need.
 666          */
 667         if (!(card->csd.cmdclass & CCC_BLOCK_READ))
 668                 return -ENODEV;
 669
 670         md = mmc_blk_alloc(card);
 671         if (IS_ERR(md))
 672                 return PTR_ERR(md);
 673
 674         err = mmc_blk_set_blksize(md, card);
 675         if (err)
 676                 goto out;
 677
 678         printk(KERN_INFO "%s: %s %s %lluKiB %s\n",
 679                 md->disk->disk_name, mmc_card_id(card), mmc_card_name(card),
 680                 (unsigned long long)(get_capacity(md->disk) >> 1),
 681                 md->read_only ? "(ro)" : "");
 682
 683         mmc_set_drvdata(card, md);
 684         add_disk(md->disk);
 685 #if 1   // add by Victor Yu. 12-15-2005
 686                 mountsd("add");
 687 #if ( defined CONFIG_ARCH_W341 ) || ( defined CONFIG_ARCH_W345 ) || (defined CONFIG_ARCH_W345_IMP1 )
 688         mcpu_gpio_inout( SD_LED , MCPU_GPIO_OUTPUT );
 689         mcpu_gpio_set( SD_LED , MCPU_GPIO_LOW );
 690 #endif
 691 #endif  // 12-15-2005
 692         return 0;
 693
 694  out:
 695         mmc_blk_put(md);
 696
 697         return err;
 698 }
 699
 700 static void mmc_blk_remove(struct mmc_card *card)
 701 {
 702 #if 0   // mask by Victor Yu. 12-03-2008
 703         struct mmc_blk_data *md = mmc_get_drvdata(card);
 704 #else
 705         struct mmc_blk_data *md;
 706
 707         md = mmc_get_drvdata(card);
 708 #endif
 709
 710         if (md) {
 711                 int devidx;
 712
 713 #if 1   // add by Victor Yu. 12-15-2005
 714                 mountsd("remove");
 715 #if ( defined CONFIG_ARCH_W341 ) || ( defined CONFIG_ARCH_W345 ) || (defined CONFIG_ARCH_W345_IMP1 )
 716                 mcpu_gpio_inout( SD_LED , MCPU_GPIO_OUTPUT );
 717                 mcpu_gpio_set( SD_LED , MCPU_GPIO_HIGH );
 718 #endif
 719 #endif  // 12-15-2005
 720                 /* Stop new requests from getting into the queue */
 721                 del_gendisk(md->disk);
 722
 723                 /* Then flush out any already in there */
 724                 mmc_cleanup_queue(&md->queue);
 725 #if 1   // add by Victor Yu. 12-03-2008
 726                 md->disk->queue = NULL;
 727 #endif
 728
 729                 devidx = md->disk->first_minor >> MMC_SHIFT;
 730                 __clear_bit(devidx, dev_use);
 731
 732                 mmc_blk_put(md);
 733         }
 734         mmc_set_drvdata(card, NULL);
 735 }
 736
 737 #ifdef CONFIG_PM
 738 static int mmc_blk_suspend(struct mmc_card *card, pm_message_t state)
 739 {
 740         struct mmc_blk_data *md = mmc_get_drvdata(card);
 741
 742         if (md) {
 743                 mmc_queue_suspend(&md->queue);
 744         }
 745         return 0;
 746 }
 747
 748 static int mmc_blk_resume(struct mmc_card *card)
 749 {
 750         struct mmc_blk_data *md = mmc_get_drvdata(card);
 751
 752         if (md) {
 753                 mmc_blk_set_blksize(md, card);
 754                 mmc_queue_resume(&md->queue);
 755         }
 756         return 0;
 757 }
 758 #else
 759 #define mmc_blk_suspend NULL
 760 #define mmc_blk_resume  NULL
 761 #endif
 762
 763 static struct mmc_driver mmc_driver = {
 764         .drv            = {
 765                 .name   = "mmcblk",
 766         },
 767         .probe          = mmc_blk_probe,
 768         .remove         = mmc_blk_remove,
 769         .suspend        = mmc_blk_suspend,
 770         .resume         = mmc_blk_resume,
 771 };
 772
 773 static int __init mmc_blk_init(void)
 774 {
 775         int res = -ENOMEM;
 776
 777         res = register_blkdev(MMC_BLOCK_MAJOR, "mmc");
 778         if (res)
 779                 goto out;
 780
 781 #if ( defined CONFIG_ARCH_W341 ) || ( defined CONFIG_ARCH_W345 ) || (defined CONFIG_ARCH_W345_IMP1 )
 782         mcpu_gpio_inout( SD_LED , MCPU_GPIO_OUTPUT );
 783         mcpu_gpio_set( SD_LED , MCPU_GPIO_HIGH );
 784 #endif
 785         return mmc_register_driver(&mmc_driver);
 786
 787  out:
 788         return res;
 789 }
 790
 791 static void __exit mmc_blk_exit(void)
 792 {
 793         mmc_unregister_driver(&mmc_driver);
 794         unregister_blkdev(MMC_BLOCK_MAJOR, "mmc");
 795 }
 796
 797 module_init(mmc_blk_init);
 798 module_exit(mmc_blk_exit);
 799
 800 MODULE_LICENSE("GPL");
 801 MODULE_DESCRIPTION("Multimedia Card (MMC) block device driver");
 802