drivers/net/wireless/mwifiex/sdio.c

   1 /*
   2  * Marvell Wireless LAN device driver: SDIO specific handling
   3  *
   4  * Copyright (C) 2011-2014, Marvell International Ltd.
   5  *
   6  * This software file (the "File") is distributed by Marvell International
   7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8  * (the "License").  You may use, redistribute and/or modify this File in
   9  * accordance with the terms and conditions of the License, a copy of which
  10  * is available by writing to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13  *
  14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  17  * this warranty disclaimer.
  18  */
  19
  20 #include <linux/firmware.h>
  21
  22 #include "decl.h"
  23 #include "ioctl.h"
  24 #include "util.h"
  25 #include "fw.h"
  26 #include "main.h"
  27 #include "wmm.h"
  28 #include "11n.h"
  29 #include "sdio.h"
  30
  31
  32 #define SDIO_VERSION    "1.0"
  33
  34 /* The mwifiex_sdio_remove() callback function is called when
  35  * user removes this module from kernel space or ejects
  36  * the card from the slot. The driver handles these 2 cases
  37  * differently.
  38  * If the user is removing the module, the few commands (FUNC_SHUTDOWN,
  39  * HS_CANCEL etc.) are sent to the firmware.
  40  * If the card is removed, there is no need to send these command.
  41  *
  42  * The variable 'user_rmmod' is used to distinguish these two
  43  * scenarios. This flag is initialized as FALSE in case the card
  44  * is removed, and will be set to TRUE for module removal when
  45  * module_exit function is called.
  46  */
  47 static u8 user_rmmod;
  48
  49 static struct mwifiex_if_ops sdio_ops;
  50 static unsigned long iface_work_flags;
  51
  52 static struct semaphore add_remove_card_sem;
  53
  54 static struct memory_type_mapping mem_type_mapping_tbl[] = {
  55         {"ITCM", NULL, 0, 0xF0},
  56         {"DTCM", NULL, 0, 0xF1},
  57         {"SQRAM", NULL, 0, 0xF2},
  58         {"APU", NULL, 0, 0xF3},
  59         {"CIU", NULL, 0, 0xF4},
  60         {"ICU", NULL, 0, 0xF5},
  61         {"MAC", NULL, 0, 0xF6},
  62         {"EXT7", NULL, 0, 0xF7},
  63         {"EXT8", NULL, 0, 0xF8},
  64         {"EXT9", NULL, 0, 0xF9},
  65         {"EXT10", NULL, 0, 0xFA},
  66         {"EXT11", NULL, 0, 0xFB},
  67         {"EXT12", NULL, 0, 0xFC},
  68         {"EXT13", NULL, 0, 0xFD},
  69         {"EXTLAST", NULL, 0, 0xFE},
  70 };
  71
  72 /*
  73  * SDIO probe.
  74  *
  75  * This function probes an mwifiex device and registers it. It allocates
  76  * the card structure, enables SDIO function number and initiates the
  77  * device registration and initialization procedure by adding a logical
  78  * interface.
  79  */
  80 static int
  81 mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
  82 {
  83         int ret;
  84         struct sdio_mmc_card *card = NULL;
  85
  86         pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n",
  87                  func->vendor, func->device, func->class, func->num);
  88
  89         card = kzalloc(sizeof(struct sdio_mmc_card), GFP_KERNEL);
  90         if (!card)
  91                 return -ENOMEM;
  92
  93         card->func = func;
  94
  95         func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
  96
  97         if (id->driver_data) {
  98                 struct mwifiex_sdio_device *data = (void *)id->driver_data;
  99
 100                 card->firmware = data->firmware;
 101                 card->reg = data->reg;
 102                 card->max_ports = data->max_ports;
 103                 card->mp_agg_pkt_limit = data->mp_agg_pkt_limit;
 104                 card->supports_sdio_new_mode = data->supports_sdio_new_mode;
 105                 card->has_control_mask = data->has_control_mask;
 106                 card->tx_buf_size = data->tx_buf_size;
 107                 card->mp_tx_agg_buf_size = data->mp_tx_agg_buf_size;
 108                 card->mp_rx_agg_buf_size = data->mp_rx_agg_buf_size;
 109                 card->can_dump_fw = data->can_dump_fw;
 110                 card->can_auto_tdls = data->can_auto_tdls;
 111                 card->can_ext_scan = data->can_ext_scan;
 112         }
 113
 114         sdio_claim_host(func);
 115         ret = sdio_enable_func(func);
 116         sdio_release_host(func);
 117
 118         if (ret) {
 119                 pr_err("%s: failed to enable function\n", __func__);
 120                 kfree(card);
 121                 return -EIO;
 122         }
 123
 124         if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops,
 125                              MWIFIEX_SDIO)) {
 126                 pr_err("%s: add card failed\n", __func__);
 127                 kfree(card);
 128                 sdio_claim_host(func);
 129                 ret = sdio_disable_func(func);
 130                 sdio_release_host(func);
 131                 ret = -1;
 132         }
 133
 134         return ret;
 135 }
 136
 137 /*
 138  * SDIO resume.
 139  *
 140  * Kernel needs to suspend all functions separately. Therefore all
 141  * registered functions must have drivers with suspend and resume
 142  * methods. Failing that the kernel simply removes the whole card.
 143  *
 144  * If already not resumed, this function turns on the traffic and
 145  * sends a host sleep cancel request to the firmware.
 146  */
 147 static int mwifiex_sdio_resume(struct device *dev)
 148 {
 149         struct sdio_func *func = dev_to_sdio_func(dev);
 150         struct sdio_mmc_card *card;
 151         struct mwifiex_adapter *adapter;
 152         mmc_pm_flag_t pm_flag = 0;
 153
 154         if (func) {
 155                 pm_flag = sdio_get_host_pm_caps(func);
 156                 card = sdio_get_drvdata(func);
 157                 if (!card || !card->adapter) {
 158                         pr_err("resume: invalid card or adapter\n");
 159                         return 0;
 160                 }
 161         } else {
 162                 pr_err("resume: sdio_func is not specified\n");
 163                 return 0;
 164         }
 165
 166         adapter = card->adapter;
 167
 168         if (!adapter->is_suspended) {
 169                 dev_warn(adapter->dev, "device already resumed\n");
 170                 return 0;
 171         }
 172
 173         adapter->is_suspended = false;
 174
 175         /* Disable Host Sleep */
 176         mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
 177                           MWIFIEX_ASYNC_CMD);
 178
 179         return 0;
 180 }
 181
 182 /*
 183  * SDIO remove.
 184  *
 185  * This function removes the interface and frees up the card structure.
 186  */
 187 static void
 188 mwifiex_sdio_remove(struct sdio_func *func)
 189 {
 190         struct sdio_mmc_card *card;
 191         struct mwifiex_adapter *adapter;
 192         struct mwifiex_private *priv;
 193
 194         pr_debug("info: SDIO func num=%d\n", func->num);
 195
 196         card = sdio_get_drvdata(func);
 197         if (!card)
 198                 return;
 199
 200         adapter = card->adapter;
 201         if (!adapter || !adapter->priv_num)
 202                 return;
 203
 204         if (user_rmmod) {
 205                 if (adapter->is_suspended)
 206                         mwifiex_sdio_resume(adapter->dev);
 207
 208                 mwifiex_deauthenticate_all(adapter);
 209
 210                 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 211                 mwifiex_disable_auto_ds(priv);
 212                 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
 213         }
 214
 215         mwifiex_remove_card(card->adapter, &add_remove_card_sem);
 216 }
 217
 218 /*
 219  * SDIO suspend.
 220  *
 221  * Kernel needs to suspend all functions separately. Therefore all
 222  * registered functions must have drivers with suspend and resume
 223  * methods. Failing that the kernel simply removes the whole card.
 224  *
 225  * If already not suspended, this function allocates and sends a host
 226  * sleep activate request to the firmware and turns off the traffic.
 227  */
 228 static int mwifiex_sdio_suspend(struct device *dev)
 229 {
 230         struct sdio_func *func = dev_to_sdio_func(dev);
 231         struct sdio_mmc_card *card;
 232         struct mwifiex_adapter *adapter;
 233         mmc_pm_flag_t pm_flag = 0;
 234         int ret = 0;
 235
 236         if (func) {
 237                 pm_flag = sdio_get_host_pm_caps(func);
 238                 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
 239                          sdio_func_id(func), pm_flag);
 240                 if (!(pm_flag & MMC_PM_KEEP_POWER)) {
 241                         pr_err("%s: cannot remain alive while host is"
 242                                 " suspended\n", sdio_func_id(func));
 243                         return -ENOSYS;
 244                 }
 245
 246                 card = sdio_get_drvdata(func);
 247                 if (!card || !card->adapter) {
 248                         pr_err("suspend: invalid card or adapter\n");
 249                         return 0;
 250                 }
 251         } else {
 252                 pr_err("suspend: sdio_func is not specified\n");
 253                 return 0;
 254         }
 255
 256         adapter = card->adapter;
 257
 258         /* Enable the Host Sleep */
 259         if (!mwifiex_enable_hs(adapter)) {
 260                 dev_err(adapter->dev, "cmd: failed to suspend\n");
 261                 adapter->hs_enabling = false;
 262                 return -EFAULT;
 263         }
 264
 265         dev_dbg(adapter->dev, "cmd: suspend with MMC_PM_KEEP_POWER\n");
 266         ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
 267
 268         /* Indicate device suspended */
 269         adapter->is_suspended = true;
 270         adapter->hs_enabling = false;
 271
 272         return ret;
 273 }
 274
 275 /* Device ID for SD8786 */
 276 #define SDIO_DEVICE_ID_MARVELL_8786   (0x9116)
 277 /* Device ID for SD8787 */
 278 #define SDIO_DEVICE_ID_MARVELL_8787   (0x9119)
 279 /* Device ID for SD8797 */
 280 #define SDIO_DEVICE_ID_MARVELL_8797   (0x9129)
 281 /* Device ID for SD8897 */
 282 #define SDIO_DEVICE_ID_MARVELL_8897   (0x912d)
 283 /* Device ID for SD8887 */
 284 #define SDIO_DEVICE_ID_MARVELL_8887   (0x9135)
 285 /* Device ID for SD8801 */
 286 #define SDIO_DEVICE_ID_MARVELL_8801   (0x9139)
 287
 288
 289 /* WLAN IDs */
 290 static const struct sdio_device_id mwifiex_ids[] = {
 291         {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786),
 292                 .driver_data = (unsigned long) &mwifiex_sdio_sd8786},
 293         {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787),
 294                 .driver_data = (unsigned long) &mwifiex_sdio_sd8787},
 295         {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797),
 296                 .driver_data = (unsigned long) &mwifiex_sdio_sd8797},
 297         {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897),
 298                 .driver_data = (unsigned long) &mwifiex_sdio_sd8897},
 299         {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887),
 300                 .driver_data = (unsigned long)&mwifiex_sdio_sd8887},
 301         {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8801),
 302                 .driver_data = (unsigned long)&mwifiex_sdio_sd8801},
 303         {},
 304 };
 305
 306 MODULE_DEVICE_TABLE(sdio, mwifiex_ids);
 307
 308 static const struct dev_pm_ops mwifiex_sdio_pm_ops = {
 309         .suspend = mwifiex_sdio_suspend,
 310         .resume = mwifiex_sdio_resume,
 311 };
 312
 313 static struct sdio_driver mwifiex_sdio = {
 314         .name = "mwifiex_sdio",
 315         .id_table = mwifiex_ids,
 316         .probe = mwifiex_sdio_probe,
 317         .remove = mwifiex_sdio_remove,
 318         .drv = {
 319                 .owner = THIS_MODULE,
 320                 .pm = &mwifiex_sdio_pm_ops,
 321         }
 322 };
 323
 324 /* Write data into SDIO card register. Caller claims SDIO device. */
 325 static int
 326 mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data)
 327 {
 328         int ret = -1;
 329         sdio_writeb(func, data, reg, &ret);
 330         return ret;
 331 }
 332
 333 /*
 334  * This function writes data into SDIO card register.
 335  */
 336 static int
 337 mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data)
 338 {
 339         struct sdio_mmc_card *card = adapter->card;
 340         int ret;
 341
 342         sdio_claim_host(card->func);
 343         ret = mwifiex_write_reg_locked(card->func, reg, data);
 344         sdio_release_host(card->func);
 345
 346         return ret;
 347 }
 348
 349 /*
 350  * This function reads data from SDIO card register.
 351  */
 352 static int
 353 mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data)
 354 {
 355         struct sdio_mmc_card *card = adapter->card;
 356         int ret = -1;
 357         u8 val;
 358
 359         sdio_claim_host(card->func);
 360         val = sdio_readb(card->func, reg, &ret);
 361         sdio_release_host(card->func);
 362
 363         *data = val;
 364
 365         return ret;
 366 }
 367
 368 /*
 369  * This function writes multiple data into SDIO card memory.
 370  *
 371  * This does not work in suspended mode.
 372  */
 373 static int
 374 mwifiex_write_data_sync(struct mwifiex_adapter *adapter,
 375                         u8 *buffer, u32 pkt_len, u32 port)
 376 {
 377         struct sdio_mmc_card *card = adapter->card;
 378         int ret;
 379         u8 blk_mode =
 380                 (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE;
 381         u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
 382         u32 blk_cnt =
 383                 (blk_mode ==
 384                  BLOCK_MODE) ? (pkt_len /
 385                                 MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len;
 386         u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
 387
 388         if (adapter->is_suspended) {
 389                 dev_err(adapter->dev,
 390                         "%s: not allowed while suspended\n", __func__);
 391                 return -1;
 392         }
 393
 394         sdio_claim_host(card->func);
 395
 396         ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size);
 397
 398         sdio_release_host(card->func);
 399
 400         return ret;
 401 }
 402
 403 /*
 404  * This function reads multiple data from SDIO card memory.
 405  */
 406 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer,
 407                                   u32 len, u32 port, u8 claim)
 408 {
 409         struct sdio_mmc_card *card = adapter->card;
 410         int ret;
 411         u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE
 412                        : BLOCK_MODE;
 413         u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
 414         u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE)
 415                         : len;
 416         u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
 417
 418         if (claim)
 419                 sdio_claim_host(card->func);
 420
 421         ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size);
 422
 423         if (claim)
 424                 sdio_release_host(card->func);
 425
 426         return ret;
 427 }
 428
 429 /*
 430  * This function wakes up the card.
 431  *
 432  * A host power up command is written to the card configuration
 433  * register to wake up the card.
 434  */
 435 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
 436 {
 437         dev_dbg(adapter->dev, "event: wakeup device...\n");
 438
 439         return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP);
 440 }
 441
 442 /*
 443  * This function is called after the card has woken up.
 444  *
 445  * The card configuration register is reset.
 446  */
 447 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
 448 {
 449         dev_dbg(adapter->dev, "cmd: wakeup device completed\n");
 450
 451         return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0);
 452 }
 453
 454 /*
 455  * This function is used to initialize IO ports for the
 456  * chipsets supporting SDIO new mode eg SD8897.
 457  */
 458 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter)
 459 {
 460         u8 reg;
 461         struct sdio_mmc_card *card = adapter->card;
 462
 463         adapter->ioport = MEM_PORT;
 464
 465         /* enable sdio new mode */
 466         if (mwifiex_read_reg(adapter, card->reg->card_cfg_2_1_reg, &reg))
 467                 return -1;
 468         if (mwifiex_write_reg(adapter, card->reg->card_cfg_2_1_reg,
 469                               reg | CMD53_NEW_MODE))
 470                 return -1;
 471
 472         /* Configure cmd port and enable reading rx length from the register */
 473         if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_0, &reg))
 474                 return -1;
 475         if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_0,
 476                               reg | CMD_PORT_RD_LEN_EN))
 477                 return -1;
 478
 479         /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
 480          * completed
 481          */
 482         if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_1, &reg))
 483                 return -1;
 484         if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_1,
 485                               reg | CMD_PORT_AUTO_EN))
 486                 return -1;
 487
 488         return 0;
 489 }
 490
 491 /* This function initializes the IO ports.
 492  *
 493  * The following operations are performed -
 494  *      - Read the IO ports (0, 1 and 2)
 495  *      - Set host interrupt Reset-To-Read to clear
 496  *      - Set auto re-enable interrupt
 497  */
 498 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter)
 499 {
 500         u8 reg;
 501         struct sdio_mmc_card *card = adapter->card;
 502
 503         adapter->ioport = 0;
 504
 505         if (card->supports_sdio_new_mode) {
 506                 if (mwifiex_init_sdio_new_mode(adapter))
 507                         return -1;
 508                 goto cont;
 509         }
 510
 511         /* Read the IO port */
 512         if (!mwifiex_read_reg(adapter, card->reg->io_port_0_reg, &reg))
 513                 adapter->ioport |= (reg & 0xff);
 514         else
 515                 return -1;
 516
 517         if (!mwifiex_read_reg(adapter, card->reg->io_port_1_reg, &reg))
 518                 adapter->ioport |= ((reg & 0xff) << 8);
 519         else
 520                 return -1;
 521
 522         if (!mwifiex_read_reg(adapter, card->reg->io_port_2_reg, &reg))
 523                 adapter->ioport |= ((reg & 0xff) << 16);
 524         else
 525                 return -1;
 526 cont:
 527         pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
 528
 529         /* Set Host interrupt reset to read to clear */
 530         if (!mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, &reg))
 531                 mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg,
 532                                   reg | card->reg->sdio_int_mask);
 533         else
 534                 return -1;
 535
 536         /* Dnld/Upld ready set to auto reset */
 537         if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, &reg))
 538                 mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg,
 539                                   reg | AUTO_RE_ENABLE_INT);
 540         else
 541                 return -1;
 542
 543         return 0;
 544 }
 545
 546 /*
 547  * This function sends data to the card.
 548  */
 549 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter,
 550                                       u8 *payload, u32 pkt_len, u32 port)
 551 {
 552         u32 i = 0;
 553         int ret;
 554
 555         do {
 556                 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port);
 557                 if (ret) {
 558                         i++;
 559                         dev_err(adapter->dev, "host_to_card, write iomem"
 560                                         " (%d) failed: %d\n", i, ret);
 561                         if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
 562                                 dev_err(adapter->dev, "write CFG reg failed\n");
 563
 564                         ret = -1;
 565                         if (i > MAX_WRITE_IOMEM_RETRY)
 566                                 return ret;
 567                 }
 568         } while (ret == -1);
 569
 570         return ret;
 571 }
 572
 573 /*
 574  * This function gets the read port.
 575  *
 576  * If control port bit is set in MP read bitmap, the control port
 577  * is returned, otherwise the current read port is returned and
 578  * the value is increased (provided it does not reach the maximum
 579  * limit, in which case it is reset to 1)
 580  */
 581 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port)
 582 {
 583         struct sdio_mmc_card *card = adapter->card;
 584         const struct mwifiex_sdio_card_reg *reg = card->reg;
 585         u32 rd_bitmap = card->mp_rd_bitmap;
 586
 587         dev_dbg(adapter->dev, "data: mp_rd_bitmap=0x%08x\n", rd_bitmap);
 588
 589         if (card->supports_sdio_new_mode) {
 590                 if (!(rd_bitmap & reg->data_port_mask))
 591                         return -1;
 592         } else {
 593                 if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask)))
 594                         return -1;
 595         }
 596
 597         if ((card->has_control_mask) &&
 598             (card->mp_rd_bitmap & CTRL_PORT_MASK)) {
 599                 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK);
 600                 *port = CTRL_PORT;
 601                 dev_dbg(adapter->dev, "data: port=%d mp_rd_bitmap=0x%08x\n",
 602                         *port, card->mp_rd_bitmap);
 603                 return 0;
 604         }
 605
 606         if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port)))
 607                 return -1;
 608
 609         /* We are now handling the SDIO data ports */
 610         card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port));
 611         *port = card->curr_rd_port;
 612
 613         if (++card->curr_rd_port == card->max_ports)
 614                 card->curr_rd_port = reg->start_rd_port;
 615
 616         dev_dbg(adapter->dev,
 617                 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n",
 618                 *port, rd_bitmap, card->mp_rd_bitmap);
 619
 620         return 0;
 621 }
 622
 623 /*
 624  * This function gets the write port for data.
 625  *
 626  * The current write port is returned if available and the value is
 627  * increased (provided it does not reach the maximum limit, in which
 628  * case it is reset to 1)
 629  */
 630 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port)
 631 {
 632         struct sdio_mmc_card *card = adapter->card;
 633         const struct mwifiex_sdio_card_reg *reg = card->reg;
 634         u32 wr_bitmap = card->mp_wr_bitmap;
 635
 636         dev_dbg(adapter->dev, "data: mp_wr_bitmap=0x%08x\n", wr_bitmap);
 637
 638         if (!(wr_bitmap & card->mp_data_port_mask)) {
 639                 adapter->data_sent = true;
 640                 return -EBUSY;
 641         }
 642
 643         if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
 644                 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port));
 645                 *port = card->curr_wr_port;
 646                 if (++card->curr_wr_port == card->mp_end_port)
 647                         card->curr_wr_port = reg->start_wr_port;
 648         } else {
 649                 adapter->data_sent = true;
 650                 return -EBUSY;
 651         }
 652
 653         if ((card->has_control_mask) && (*port == CTRL_PORT)) {
 654                 dev_err(adapter->dev,
 655                         "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
 656                         *port, card->curr_wr_port, wr_bitmap,
 657                         card->mp_wr_bitmap);
 658                 return -1;
 659         }
 660
 661         dev_dbg(adapter->dev, "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
 662                 *port, wr_bitmap, card->mp_wr_bitmap);
 663
 664         return 0;
 665 }
 666
 667 /*
 668  * This function polls the card status.
 669  */
 670 static int
 671 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits)
 672 {
 673         struct sdio_mmc_card *card = adapter->card;
 674         u32 tries;
 675         u8 cs;
 676
 677         for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
 678                 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs))
 679                         break;
 680                 else if ((cs & bits) == bits)
 681                         return 0;
 682
 683                 usleep_range(10, 20);
 684         }
 685
 686         dev_err(adapter->dev, "poll card status failed, tries = %d\n", tries);
 687
 688         return -1;
 689 }
 690
 691 /*
 692  * This function reads the firmware status.
 693  */
 694 static int
 695 mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat)
 696 {
 697         struct sdio_mmc_card *card = adapter->card;
 698         const struct mwifiex_sdio_card_reg *reg = card->reg;
 699         u8 fws0, fws1;
 700
 701         if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0))
 702                 return -1;
 703
 704         if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1))
 705                 return -1;
 706
 707         *dat = (u16) ((fws1 << 8) | fws0);
 708
 709         return 0;
 710 }
 711
 712 /*
 713  * This function disables the host interrupt.
 714  *
 715  * The host interrupt mask is read, the disable bit is reset and
 716  * written back to the card host interrupt mask register.
 717  */
 718 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter)
 719 {
 720         struct sdio_mmc_card *card = adapter->card;
 721         struct sdio_func *func = card->func;
 722
 723         sdio_claim_host(func);
 724         mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 0);
 725         sdio_release_irq(func);
 726         sdio_release_host(func);
 727 }
 728
 729 /*
 730  * This function reads the interrupt status from card.
 731  */
 732 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
 733 {
 734         struct sdio_mmc_card *card = adapter->card;
 735         u8 sdio_ireg;
 736         unsigned long flags;
 737
 738         if (mwifiex_read_data_sync(adapter, card->mp_regs,
 739                                    card->reg->max_mp_regs,
 740                                    REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) {
 741                 dev_err(adapter->dev, "read mp_regs failed\n");
 742                 return;
 743         }
 744
 745         sdio_ireg = card->mp_regs[card->reg->host_int_status_reg];
 746         if (sdio_ireg) {
 747                 /*
 748                  * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
 749                  * For SDIO new mode CMD port interrupts
 750                  *      DN_LD_CMD_PORT_HOST_INT_STATUS and/or
 751                  *      UP_LD_CMD_PORT_HOST_INT_STATUS
 752                  * Clear the interrupt status register
 753                  */
 754                 dev_dbg(adapter->dev, "int: sdio_ireg = %#x\n", sdio_ireg);
 755                 spin_lock_irqsave(&adapter->int_lock, flags);
 756                 adapter->int_status |= sdio_ireg;
 757                 spin_unlock_irqrestore(&adapter->int_lock, flags);
 758         }
 759 }
 760
 761 /*
 762  * SDIO interrupt handler.
 763  *
 764  * This function reads the interrupt status from firmware and handles
 765  * the interrupt in current thread (ksdioirqd) right away.
 766  */
 767 static void
 768 mwifiex_sdio_interrupt(struct sdio_func *func)
 769 {
 770         struct mwifiex_adapter *adapter;
 771         struct sdio_mmc_card *card;
 772
 773         card = sdio_get_drvdata(func);
 774         if (!card || !card->adapter) {
 775                 pr_debug("int: func=%p card=%p adapter=%p\n",
 776                          func, card, card ? card->adapter : NULL);
 777                 return;
 778         }
 779         adapter = card->adapter;
 780
 781         if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP)
 782                 adapter->ps_state = PS_STATE_AWAKE;
 783
 784         mwifiex_interrupt_status(adapter);
 785         mwifiex_main_process(adapter);
 786 }
 787
 788 /*
 789  * This function enables the host interrupt.
 790  *
 791  * The host interrupt enable mask is written to the card
 792  * host interrupt mask register.
 793  */
 794 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter)
 795 {
 796         struct sdio_mmc_card *card = adapter->card;
 797         struct sdio_func *func = card->func;
 798         int ret;
 799
 800         sdio_claim_host(func);
 801
 802         /* Request the SDIO IRQ */
 803         ret = sdio_claim_irq(func, mwifiex_sdio_interrupt);
 804         if (ret) {
 805                 dev_err(adapter->dev, "claim irq failed: ret=%d\n", ret);
 806                 goto out;
 807         }
 808
 809         /* Simply write the mask to the register */
 810         ret = mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg,
 811                                        card->reg->host_int_enable);
 812         if (ret) {
 813                 dev_err(adapter->dev, "enable host interrupt failed\n");
 814                 sdio_release_irq(func);
 815         }
 816
 817 out:
 818         sdio_release_host(func);
 819         return ret;
 820 }
 821
 822 /*
 823  * This function sends a data buffer to the card.
 824  */
 825 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter,
 826                                      u32 *type, u8 *buffer,
 827                                      u32 npayload, u32 ioport)
 828 {
 829         int ret;
 830         u32 nb;
 831
 832         if (!buffer) {
 833                 dev_err(adapter->dev, "%s: buffer is NULL\n", __func__);
 834                 return -1;
 835         }
 836
 837         ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1);
 838
 839         if (ret) {
 840                 dev_err(adapter->dev, "%s: read iomem failed: %d\n", __func__,
 841                         ret);
 842                 return -1;
 843         }
 844
 845         nb = le16_to_cpu(*(__le16 *) (buffer));
 846         if (nb > npayload) {
 847                 dev_err(adapter->dev, "%s: invalid packet, nb=%d npayload=%d\n",
 848                         __func__, nb, npayload);
 849                 return -1;
 850         }
 851
 852         *type = le16_to_cpu(*(__le16 *) (buffer + 2));
 853
 854         return ret;
 855 }
 856
 857 /*
 858  * This function downloads the firmware to the card.
 859  *
 860  * Firmware is downloaded to the card in blocks. Every block download
 861  * is tested for CRC errors, and retried a number of times before
 862  * returning failure.
 863  */
 864 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
 865                                     struct mwifiex_fw_image *fw)
 866 {
 867         struct sdio_mmc_card *card = adapter->card;
 868         const struct mwifiex_sdio_card_reg *reg = card->reg;
 869         int ret;
 870         u8 *firmware = fw->fw_buf;
 871         u32 firmware_len = fw->fw_len;
 872         u32 offset = 0;
 873         u8 base0, base1;
 874         u8 *fwbuf;
 875         u16 len = 0;
 876         u32 txlen, tx_blocks = 0, tries;
 877         u32 i = 0;
 878
 879         if (!firmware_len) {
 880                 dev_err(adapter->dev,
 881                         "firmware image not found! Terminating download\n");
 882                 return -1;
 883         }
 884
 885         dev_dbg(adapter->dev, "info: downloading FW image (%d bytes)\n",
 886                 firmware_len);
 887
 888         /* Assume that the allocated buffer is 8-byte aligned */
 889         fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL);
 890         if (!fwbuf)
 891                 return -ENOMEM;
 892
 893         /* Perform firmware data transfer */
 894         do {
 895                 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
 896                    bits */
 897                 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY |
 898                                                     DN_LD_CARD_RDY);
 899                 if (ret) {
 900                         dev_err(adapter->dev, "FW download with helper:"
 901                                 " poll status timeout @ %d\n", offset);
 902                         goto done;
 903                 }
 904
 905                 /* More data? */
 906                 if (offset >= firmware_len)
 907                         break;
 908
 909                 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
 910                         ret = mwifiex_read_reg(adapter, reg->base_0_reg,
 911                                                &base0);
 912                         if (ret) {
 913                                 dev_err(adapter->dev,
 914                                         "dev BASE0 register read failed: "
 915                                         "base0=%#04X(%d). Terminating dnld\n",
 916                                         base0, base0);
 917                                 goto done;
 918                         }
 919                         ret = mwifiex_read_reg(adapter, reg->base_1_reg,
 920                                                &base1);
 921                         if (ret) {
 922                                 dev_err(adapter->dev,
 923                                         "dev BASE1 register read failed: "
 924                                         "base1=%#04X(%d). Terminating dnld\n",
 925                                         base1, base1);
 926                                 goto done;
 927                         }
 928                         len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff));
 929
 930                         if (len)
 931                                 break;
 932
 933                         usleep_range(10, 20);
 934                 }
 935
 936                 if (!len) {
 937                         break;
 938                 } else if (len > MWIFIEX_UPLD_SIZE) {
 939                         dev_err(adapter->dev,
 940                                 "FW dnld failed @ %d, invalid length %d\n",
 941                                 offset, len);
 942                         ret = -1;
 943                         goto done;
 944                 }
 945
 946                 txlen = len;
 947
 948                 if (len & BIT(0)) {
 949                         i++;
 950                         if (i > MAX_WRITE_IOMEM_RETRY) {
 951                                 dev_err(adapter->dev,
 952                                         "FW dnld failed @ %d, over max retry\n",
 953                                         offset);
 954                                 ret = -1;
 955                                 goto done;
 956                         }
 957                         dev_err(adapter->dev, "CRC indicated by the helper:"
 958                                 " len = 0x%04X, txlen = %d\n", len, txlen);
 959                         len &= ~BIT(0);
 960                         /* Setting this to 0 to resend from same offset */
 961                         txlen = 0;
 962                 } else {
 963                         i = 0;
 964
 965                         /* Set blocksize to transfer - checking for last
 966                            block */
 967                         if (firmware_len - offset < txlen)
 968                                 txlen = firmware_len - offset;
 969
 970                         tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1)
 971                                     / MWIFIEX_SDIO_BLOCK_SIZE;
 972
 973                         /* Copy payload to buffer */
 974                         memmove(fwbuf, &firmware[offset], txlen);
 975                 }
 976
 977                 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks *
 978                                               MWIFIEX_SDIO_BLOCK_SIZE,
 979                                               adapter->ioport);
 980                 if (ret) {
 981                         dev_err(adapter->dev,
 982                                 "FW download, write iomem (%d) failed @ %d\n",
 983                                 i, offset);
 984                         if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
 985                                 dev_err(adapter->dev, "write CFG reg failed\n");
 986
 987                         ret = -1;
 988                         goto done;
 989                 }
 990
 991                 offset += txlen;
 992         } while (true);
 993
 994         dev_notice(adapter->dev,
 995                    "info: FW download over, size %d bytes\n", offset);
 996
 997         ret = 0;
 998 done:
 999         kfree(fwbuf);
1000         return ret;
1001 }
1002
1003 /*
1004  * This function checks the firmware status in card.
1005  *
1006  * The winner interface is also determined by this function.
1007  */
1008 static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter,
1009                                    u32 poll_num)
1010 {
1011         struct sdio_mmc_card *card = adapter->card;
1012         int ret = 0;
1013         u16 firmware_stat;
1014         u32 tries;
1015         u8 winner_status;
1016
1017         /* Wait for firmware initialization event */
1018         for (tries = 0; tries < poll_num; tries++) {
1019                 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
1020                 if (ret)
1021                         continue;
1022                 if (firmware_stat == FIRMWARE_READY_SDIO) {
1023                         ret = 0;
1024                         break;
1025                 } else {
1026                         msleep(100);
1027                         ret = -1;
1028                 }
1029         }
1030
1031         if (ret) {
1032                 if (mwifiex_read_reg
1033                     (adapter, card->reg->status_reg_0, &winner_status))
1034                         winner_status = 0;
1035
1036                 if (winner_status)
1037                         adapter->winner = 0;
1038                 else
1039                         adapter->winner = 1;
1040         }
1041         return ret;
1042 }
1043
1044 /*
1045  * This function decode sdio aggreation pkt.
1046  *
1047  * Based on the the data block size and pkt_len,
1048  * skb data will be decoded to few packets.
1049  */
1050 static void mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter *adapter,
1051                                     struct sk_buff *skb)
1052 {
1053         u32 total_pkt_len, pkt_len;
1054         struct sk_buff *skb_deaggr;
1055         u32 pkt_type;
1056         u16 blk_size;
1057         u8 blk_num;
1058         u8 *data;
1059
1060         data = skb->data;
1061         total_pkt_len = skb->len;
1062
1063         while (total_pkt_len >= (SDIO_HEADER_OFFSET + INTF_HEADER_LEN)) {
1064                 if (total_pkt_len < adapter->sdio_rx_block_size)
1065                         break;
1066                 blk_num = *(data + BLOCK_NUMBER_OFFSET);
1067                 blk_size = adapter->sdio_rx_block_size * blk_num;
1068                 if (blk_size > total_pkt_len) {
1069                         dev_err(adapter->dev, "%s: error in pkt,\t"
1070                                 "blk_num=%d, blk_size=%d, total_pkt_len=%d\n",
1071                                 __func__, blk_num, blk_size, total_pkt_len);
1072                         break;
1073                 }
1074                 pkt_len = le16_to_cpu(*(__le16 *)(data + SDIO_HEADER_OFFSET));
1075                 pkt_type = le16_to_cpu(*(__le16 *)(data + SDIO_HEADER_OFFSET +
1076                                          2));
1077                 if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) {
1078                         dev_err(adapter->dev, "%s: error in pkt,\t"
1079                                 "pkt_len=%d, blk_size=%d\n",
1080                                 __func__, pkt_len, blk_size);
1081                         break;
1082                 }
1083                 skb_deaggr = mwifiex_alloc_dma_align_buf(pkt_len,
1084                                                          GFP_KERNEL | GFP_DMA);
1085                 if (!skb_deaggr)
1086                         break;
1087                 skb_put(skb_deaggr, pkt_len);
1088                 memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len);
1089                 skb_pull(skb_deaggr, INTF_HEADER_LEN);
1090
1091                 mwifiex_handle_rx_packet(adapter, skb_deaggr);
1092                 data += blk_size;
1093                 total_pkt_len -= blk_size;
1094         }
1095 }
1096
1097 /*
1098  * This function decodes a received packet.
1099  *
1100  * Based on the type, the packet is treated as either a data, or
1101  * a command response, or an event, and the correct handler
1102  * function is invoked.
1103  */
1104 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter,
1105                                     struct sk_buff *skb, u32 upld_typ)
1106 {
1107         u8 *cmd_buf;
1108         __le16 *curr_ptr = (__le16 *)skb->data;
1109         u16 pkt_len = le16_to_cpu(*curr_ptr);
1110         struct mwifiex_rxinfo *rx_info;
1111
1112         if (upld_typ != MWIFIEX_TYPE_AGGR_DATA) {
1113                 skb_trim(skb, pkt_len);
1114                 skb_pull(skb, INTF_HEADER_LEN);
1115         }
1116
1117         switch (upld_typ) {
1118         case MWIFIEX_TYPE_AGGR_DATA:
1119                 dev_dbg(adapter->dev, "info: --- Rx: Aggr Data packet ---\n");
1120                 rx_info = MWIFIEX_SKB_RXCB(skb);
1121                 rx_info->buf_type = MWIFIEX_TYPE_AGGR_DATA;
1122                 if (adapter->rx_work_enabled) {
1123                         skb_queue_tail(&adapter->rx_data_q, skb);
1124                         atomic_inc(&adapter->rx_pending);
1125                         adapter->data_received = true;
1126                 } else {
1127                         mwifiex_deaggr_sdio_pkt(adapter, skb);
1128                         dev_kfree_skb_any(skb);
1129                 }
1130                 break;
1131
1132         case MWIFIEX_TYPE_DATA:
1133                 dev_dbg(adapter->dev, "info: --- Rx: Data packet ---\n");
1134                 if (adapter->rx_work_enabled) {
1135                         skb_queue_tail(&adapter->rx_data_q, skb);
1136                         adapter->data_received = true;
1137                         atomic_inc(&adapter->rx_pending);
1138                 } else {
1139                         mwifiex_handle_rx_packet(adapter, skb);
1140                 }
1141                 break;
1142
1143         case MWIFIEX_TYPE_CMD:
1144                 dev_dbg(adapter->dev, "info: --- Rx: Cmd Response ---\n");
1145                 /* take care of curr_cmd = NULL case */
1146                 if (!adapter->curr_cmd) {
1147                         cmd_buf = adapter->upld_buf;
1148
1149                         if (adapter->ps_state == PS_STATE_SLEEP_CFM)
1150                                 mwifiex_process_sleep_confirm_resp(adapter,
1151                                                                    skb->data,
1152                                                                    skb->len);
1153
1154                         memcpy(cmd_buf, skb->data,
1155                                min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER,
1156                                      skb->len));
1157
1158                         dev_kfree_skb_any(skb);
1159                 } else {
1160                         adapter->cmd_resp_received = true;
1161                         adapter->curr_cmd->resp_skb = skb;
1162                 }
1163                 break;
1164
1165         case MWIFIEX_TYPE_EVENT:
1166                 dev_dbg(adapter->dev, "info: --- Rx: Event ---\n");
1167                 adapter->event_cause = le32_to_cpu(*(__le32 *) skb->data);
1168
1169                 if ((skb->len > 0) && (skb->len  < MAX_EVENT_SIZE))
1170                         memcpy(adapter->event_body,
1171                                skb->data + MWIFIEX_EVENT_HEADER_LEN,
1172                                skb->len);
1173
1174                 /* event cause has been saved to adapter->event_cause */
1175                 adapter->event_received = true;
1176                 adapter->event_skb = skb;
1177
1178                 break;
1179
1180         default:
1181                 dev_err(adapter->dev, "unknown upload type %#x\n", upld_typ);
1182                 dev_kfree_skb_any(skb);
1183                 break;
1184         }
1185
1186         return 0;
1187 }
1188
1189 /*
1190  * This function transfers received packets from card to driver, performing
1191  * aggregation if required.
1192  *
1193  * For data received on control port, or if aggregation is disabled, the
1194  * received buffers are uploaded as separate packets. However, if aggregation
1195  * is enabled and required, the buffers are copied onto an aggregation buffer,
1196  * provided there is space left, processed and finally uploaded.
1197  */
1198 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter,
1199                                              u16 rx_len, u8 port)
1200 {
1201         struct sdio_mmc_card *card = adapter->card;
1202         s32 f_do_rx_aggr = 0;
1203         s32 f_do_rx_cur = 0;
1204         s32 f_aggr_cur = 0;
1205         s32 f_post_aggr_cur = 0;
1206         struct sk_buff *skb_deaggr;
1207         struct sk_buff *skb = NULL;
1208         u32 pkt_len, pkt_type, mport, pind;
1209         u8 *curr_ptr;
1210
1211         if ((card->has_control_mask) && (port == CTRL_PORT)) {
1212                 /* Read the command Resp without aggr */
1213                 dev_dbg(adapter->dev, "info: %s: no aggregation for cmd "
1214                         "response\n", __func__);
1215
1216                 f_do_rx_cur = 1;
1217                 goto rx_curr_single;
1218         }
1219
1220         if (!card->mpa_rx.enabled) {
1221                 dev_dbg(adapter->dev, "info: %s: rx aggregation disabled\n",
1222                         __func__);
1223
1224                 f_do_rx_cur = 1;
1225                 goto rx_curr_single;
1226         }
1227
1228         if ((!card->has_control_mask && (card->mp_rd_bitmap &
1229                                          card->reg->data_port_mask)) ||
1230             (card->has_control_mask && (card->mp_rd_bitmap &
1231                                         (~((u32) CTRL_PORT_MASK))))) {
1232                 /* Some more data RX pending */
1233                 dev_dbg(adapter->dev, "info: %s: not last packet\n", __func__);
1234
1235                 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1236                         if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) {
1237                                 f_aggr_cur = 1;
1238                         } else {
1239                                 /* No room in Aggr buf, do rx aggr now */
1240                                 f_do_rx_aggr = 1;
1241                                 f_post_aggr_cur = 1;
1242                         }
1243                 } else {
1244                         /* Rx aggr not in progress */
1245                         f_aggr_cur = 1;
1246                 }
1247
1248         } else {
1249                 /* No more data RX pending */
1250                 dev_dbg(adapter->dev, "info: %s: last packet\n", __func__);
1251
1252                 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1253                         f_do_rx_aggr = 1;
1254                         if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len))
1255                                 f_aggr_cur = 1;
1256                         else
1257                                 /* No room in Aggr buf, do rx aggr now */
1258                                 f_do_rx_cur = 1;
1259                 } else {
1260                         f_do_rx_cur = 1;
1261                 }
1262         }
1263
1264         if (f_aggr_cur) {
1265                 dev_dbg(adapter->dev, "info: current packet aggregation\n");
1266                 /* Curr pkt can be aggregated */
1267                 mp_rx_aggr_setup(card, rx_len, port);
1268
1269                 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) ||
1270                     mp_rx_aggr_port_limit_reached(card)) {
1271                         dev_dbg(adapter->dev, "info: %s: aggregated packet "
1272                                 "limit reached\n", __func__);
1273                         /* No more pkts allowed in Aggr buf, rx it */
1274                         f_do_rx_aggr = 1;
1275                 }
1276         }
1277
1278         if (f_do_rx_aggr) {
1279                 /* do aggr RX now */
1280                 dev_dbg(adapter->dev, "info: do_rx_aggr: num of packets: %d\n",
1281                         card->mpa_rx.pkt_cnt);
1282
1283                 if (card->supports_sdio_new_mode) {
1284                         int i;
1285                         u32 port_count;
1286
1287                         for (i = 0, port_count = 0; i < card->max_ports; i++)
1288                                 if (card->mpa_rx.ports & BIT(i))
1289                                         port_count++;
1290
1291                         /* Reading data from "start_port + 0" to "start_port +
1292                          * port_count -1", so decrease the count by 1
1293                          */
1294                         port_count--;
1295                         mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1296                                  (port_count << 8)) + card->mpa_rx.start_port;
1297                 } else {
1298                         mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1299                                  (card->mpa_rx.ports << 4)) +
1300                                  card->mpa_rx.start_port;
1301                 }
1302
1303                 if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf,
1304                                            card->mpa_rx.buf_len, mport, 1))
1305                         goto error;
1306
1307                 curr_ptr = card->mpa_rx.buf;
1308
1309                 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1310                         u32 *len_arr = card->mpa_rx.len_arr;
1311
1312                         /* get curr PKT len & type */
1313                         pkt_len = le16_to_cpu(*(__le16 *) &curr_ptr[0]);
1314                         pkt_type = le16_to_cpu(*(__le16 *) &curr_ptr[2]);
1315
1316                         /* copy pkt to deaggr buf */
1317                         skb_deaggr = mwifiex_alloc_dma_align_buf(len_arr[pind],
1318                                                                  GFP_KERNEL |
1319                                                                  GFP_DMA);
1320                         if (!skb_deaggr)
1321                                 goto error;
1322                         skb_put(skb_deaggr, len_arr[pind]);
1323                         card->mpa_rx.skb_arr[pind] = skb_deaggr;
1324
1325                         if ((pkt_type == MWIFIEX_TYPE_DATA ||
1326                              (pkt_type == MWIFIEX_TYPE_AGGR_DATA &&
1327                               adapter->sdio_rx_aggr_enable)) &&
1328                             (pkt_len <= len_arr[pind])) {
1329
1330                                 memcpy(skb_deaggr->data, curr_ptr, pkt_len);
1331
1332                                 skb_trim(skb_deaggr, pkt_len);
1333
1334                                 /* Process de-aggr packet */
1335                                 mwifiex_decode_rx_packet(adapter, skb_deaggr,
1336                                                          pkt_type);
1337                         } else {
1338                                 dev_err(adapter->dev, "wrong aggr pkt:\t"
1339                                         "sdio_single_port_rx_aggr=%d\t"
1340                                         "type=%d len=%d max_len=%d\n",
1341                                         adapter->sdio_rx_aggr_enable,
1342                                         pkt_type, pkt_len,
1343                                         len_arr[pind]);
1344                                 dev_kfree_skb_any(skb_deaggr);
1345                         }
1346                         curr_ptr += len_arr[pind];
1347                 }
1348                 MP_RX_AGGR_BUF_RESET(card);
1349         }
1350
1351 rx_curr_single:
1352         if (f_do_rx_cur) {
1353                 dev_dbg(adapter->dev, "info: RX: port: %d, rx_len: %d\n",
1354                         port, rx_len);
1355                 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL | GFP_DMA);
1356                 if (!skb)
1357                         goto error;
1358                 skb_put(skb, rx_len);
1359
1360                 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1361                                               skb->data, skb->len,
1362                                               adapter->ioport + port))
1363                         goto error;
1364                 if (!adapter->sdio_rx_aggr_enable &&
1365                     pkt_type == MWIFIEX_TYPE_AGGR_DATA) {
1366                         dev_err(adapter->dev, "Wrong pkt type %d\t"
1367                                 "Current SDIO RX Aggr not enabled\n",
1368                                 pkt_type);
1369                         goto error;
1370                 }
1371
1372                 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1373         }
1374         if (f_post_aggr_cur) {
1375                 dev_dbg(adapter->dev, "info: current packet aggregation\n");
1376                 /* Curr pkt can be aggregated */
1377                 mp_rx_aggr_setup(card, rx_len, port);
1378         }
1379
1380         return 0;
1381 error:
1382         if (MP_RX_AGGR_IN_PROGRESS(card)) {
1383                 /* Multiport-aggregation transfer failed - cleanup */
1384                 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1385                         /* copy pkt to deaggr buf */
1386                         skb_deaggr = card->mpa_rx.skb_arr[pind];
1387                         if (skb_deaggr)
1388                                 dev_kfree_skb_any(skb_deaggr);
1389                 }
1390                 MP_RX_AGGR_BUF_RESET(card);
1391         }
1392
1393         if (f_do_rx_cur && skb)
1394                 /* Single transfer pending. Free curr buff also */
1395                 dev_kfree_skb_any(skb);
1396
1397         return -1;
1398 }
1399
1400 /*
1401  * This function checks the current interrupt status.
1402  *
1403  * The following interrupts are checked and handled by this function -
1404  *      - Data sent
1405  *      - Command sent
1406  *      - Packets received
1407  *
1408  * Since the firmware does not generate download ready interrupt if the
1409  * port updated is command port only, command sent interrupt checking
1410  * should be done manually, and for every SDIO interrupt.
1411  *
1412  * In case of Rx packets received, the packets are uploaded from card to
1413  * host and processed accordingly.
1414  */
1415 static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
1416 {
1417         struct sdio_mmc_card *card = adapter->card;
1418         const struct mwifiex_sdio_card_reg *reg = card->reg;
1419         int ret = 0;
1420         u8 sdio_ireg;
1421         struct sk_buff *skb;
1422         u8 port = CTRL_PORT;
1423         u32 len_reg_l, len_reg_u;
1424         u32 rx_blocks;
1425         u16 rx_len;
1426         unsigned long flags;
1427         u32 bitmap;
1428         u8 cr;
1429
1430         spin_lock_irqsave(&adapter->int_lock, flags);
1431         sdio_ireg = adapter->int_status;
1432         adapter->int_status = 0;
1433         spin_unlock_irqrestore(&adapter->int_lock, flags);
1434
1435         if (!sdio_ireg)
1436                 return ret;
1437
1438         /* Following interrupt is only for SDIO new mode */
1439         if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent)
1440                 adapter->cmd_sent = false;
1441
1442         /* Following interrupt is only for SDIO new mode */
1443         if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) {
1444                 u32 pkt_type;
1445
1446                 /* read the len of control packet */
1447                 rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8;
1448                 rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0];
1449                 rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE);
1450                 if (rx_len <= INTF_HEADER_LEN ||
1451                     (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1452                      MWIFIEX_RX_DATA_BUF_SIZE)
1453                         return -1;
1454                 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1455                 dev_dbg(adapter->dev, "info: rx_len = %d\n", rx_len);
1456
1457                 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL | GFP_DMA);
1458                 if (!skb)
1459                         return -1;
1460
1461                 skb_put(skb, rx_len);
1462
1463                 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data,
1464                                               skb->len, adapter->ioport |
1465                                                         CMD_PORT_SLCT)) {
1466                         dev_err(adapter->dev,
1467                                 "%s: failed to card_to_host", __func__);
1468                         dev_kfree_skb_any(skb);
1469                         goto term_cmd;
1470                 }
1471
1472                 if ((pkt_type != MWIFIEX_TYPE_CMD) &&
1473                     (pkt_type != MWIFIEX_TYPE_EVENT))
1474                         dev_err(adapter->dev,
1475                                 "%s:Received wrong packet on cmd port",
1476                                 __func__);
1477
1478                 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1479         }
1480
1481         if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
1482                 bitmap = (u32) card->mp_regs[reg->wr_bitmap_l];
1483                 bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8;
1484                 if (card->supports_sdio_new_mode) {
1485                         bitmap |=
1486                                 ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16;
1487                         bitmap |=
1488                                 ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24;
1489                 }
1490                 card->mp_wr_bitmap = bitmap;
1491
1492                 dev_dbg(adapter->dev, "int: DNLD: wr_bitmap=0x%x\n",
1493                         card->mp_wr_bitmap);
1494                 if (adapter->data_sent &&
1495                     (card->mp_wr_bitmap & card->mp_data_port_mask)) {
1496                         dev_dbg(adapter->dev,
1497                                 "info:  <--- Tx DONE Interrupt --->\n");
1498                         adapter->data_sent = false;
1499                 }
1500         }
1501
1502         /* As firmware will not generate download ready interrupt if the port
1503            updated is command port only, cmd_sent should be done for any SDIO
1504            interrupt. */
1505         if (card->has_control_mask && adapter->cmd_sent) {
1506                 /* Check if firmware has attach buffer at command port and
1507                    update just that in wr_bit_map. */
1508                 card->mp_wr_bitmap |=
1509                         (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK;
1510                 if (card->mp_wr_bitmap & CTRL_PORT_MASK)
1511                         adapter->cmd_sent = false;
1512         }
1513
1514         dev_dbg(adapter->dev, "info: cmd_sent=%d data_sent=%d\n",
1515                 adapter->cmd_sent, adapter->data_sent);
1516         if (sdio_ireg & UP_LD_HOST_INT_STATUS) {
1517                 bitmap = (u32) card->mp_regs[reg->rd_bitmap_l];
1518                 bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8;
1519                 if (card->supports_sdio_new_mode) {
1520                         bitmap |=
1521                                 ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16;
1522                         bitmap |=
1523                                 ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24;
1524                 }
1525                 card->mp_rd_bitmap = bitmap;
1526                 dev_dbg(adapter->dev, "int: UPLD: rd_bitmap=0x%x\n",
1527                         card->mp_rd_bitmap);
1528
1529                 while (true) {
1530                         ret = mwifiex_get_rd_port(adapter, &port);
1531                         if (ret) {
1532                                 dev_dbg(adapter->dev,
1533                                         "info: no more rd_port available\n");
1534                                 break;
1535                         }
1536                         len_reg_l = reg->rd_len_p0_l + (port << 1);
1537                         len_reg_u = reg->rd_len_p0_u + (port << 1);
1538                         rx_len = ((u16) card->mp_regs[len_reg_u]) << 8;
1539                         rx_len |= (u16) card->mp_regs[len_reg_l];
1540                         dev_dbg(adapter->dev, "info: RX: port=%d rx_len=%u\n",
1541                                 port, rx_len);
1542                         rx_blocks =
1543                                 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE -
1544                                  1) / MWIFIEX_SDIO_BLOCK_SIZE;
1545                         if (rx_len <= INTF_HEADER_LEN ||
1546                             (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1547                              card->mpa_rx.buf_size) {
1548                                 dev_err(adapter->dev, "invalid rx_len=%d\n",
1549                                         rx_len);
1550                                 return -1;
1551                         }
1552
1553                         rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1554                         dev_dbg(adapter->dev, "info: rx_len = %d\n", rx_len);
1555
1556                         if (mwifiex_sdio_card_to_host_mp_aggr(adapter, rx_len,
1557                                                               port)) {
1558                                 dev_err(adapter->dev, "card_to_host_mpa failed:"
1559                                         " int status=%#x\n", sdio_ireg);
1560                                 goto term_cmd;
1561                         }
1562                 }
1563         }
1564
1565         return 0;
1566
1567 term_cmd:
1568         /* terminate cmd */
1569         if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1570                 dev_err(adapter->dev, "read CFG reg failed\n");
1571         else
1572                 dev_dbg(adapter->dev, "info: CFG reg val = %d\n", cr);
1573
1574         if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04)))
1575                 dev_err(adapter->dev, "write CFG reg failed\n");
1576         else
1577                 dev_dbg(adapter->dev, "info: write success\n");
1578
1579         if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1580                 dev_err(adapter->dev, "read CFG reg failed\n");
1581         else
1582                 dev_dbg(adapter->dev, "info: CFG reg val =%x\n", cr);
1583
1584         return -1;
1585 }
1586
1587 /*
1588  * This function aggregates transmission buffers in driver and downloads
1589  * the aggregated packet to card.
1590  *
1591  * The individual packets are aggregated by copying into an aggregation
1592  * buffer and then downloaded to the card. Previous unsent packets in the
1593  * aggregation buffer are pre-copied first before new packets are added.
1594  * Aggregation is done till there is space left in the aggregation buffer,
1595  * or till new packets are available.
1596  *
1597  * The function will only download the packet to the card when aggregation
1598  * stops, otherwise it will just aggregate the packet in aggregation buffer
1599  * and return.
1600  */
1601 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
1602                                         u8 *payload, u32 pkt_len, u32 port,
1603                                         u32 next_pkt_len)
1604 {
1605         struct sdio_mmc_card *card = adapter->card;
1606         int ret = 0;
1607         s32 f_send_aggr_buf = 0;
1608         s32 f_send_cur_buf = 0;
1609         s32 f_precopy_cur_buf = 0;
1610         s32 f_postcopy_cur_buf = 0;
1611         u32 mport;
1612
1613         if (!card->mpa_tx.enabled ||
1614             (card->has_control_mask && (port == CTRL_PORT)) ||
1615             (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) {
1616                 dev_dbg(adapter->dev, "info: %s: tx aggregation disabled\n",
1617                         __func__);
1618
1619                 f_send_cur_buf = 1;
1620                 goto tx_curr_single;
1621         }
1622
1623         if (next_pkt_len) {
1624                 /* More pkt in TX queue */
1625                 dev_dbg(adapter->dev, "info: %s: more packets in queue.\n",
1626                         __func__);
1627
1628                 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1629                         if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
1630                                 f_precopy_cur_buf = 1;
1631
1632                                 if (!(card->mp_wr_bitmap &
1633                                       (1 << card->curr_wr_port)) ||
1634                                     !MP_TX_AGGR_BUF_HAS_ROOM(
1635                                             card, pkt_len + next_pkt_len))
1636                                         f_send_aggr_buf = 1;
1637                         } else {
1638                                 /* No room in Aggr buf, send it */
1639                                 f_send_aggr_buf = 1;
1640
1641                                 if (!(card->mp_wr_bitmap &
1642                                       (1 << card->curr_wr_port)))
1643                                         f_send_cur_buf = 1;
1644                                 else
1645                                         f_postcopy_cur_buf = 1;
1646                         }
1647                 } else {
1648                         if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) &&
1649                             (card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1650                                 f_precopy_cur_buf = 1;
1651                         else
1652                                 f_send_cur_buf = 1;
1653                 }
1654         } else {
1655                 /* Last pkt in TX queue */
1656                 dev_dbg(adapter->dev, "info: %s: Last packet in Tx Queue.\n",
1657                         __func__);
1658
1659                 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1660                         /* some packs in Aggr buf already */
1661                         f_send_aggr_buf = 1;
1662
1663                         if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len))
1664                                 f_precopy_cur_buf = 1;
1665                         else
1666                                 /* No room in Aggr buf, send it */
1667                                 f_send_cur_buf = 1;
1668                 } else {
1669                         f_send_cur_buf = 1;
1670                 }
1671         }
1672
1673         if (f_precopy_cur_buf) {
1674                 dev_dbg(adapter->dev, "data: %s: precopy current buffer\n",
1675                         __func__);
1676                 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1677
1678                 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) ||
1679                     mp_tx_aggr_port_limit_reached(card))
1680                         /* No more pkts allowed in Aggr buf, send it */
1681                         f_send_aggr_buf = 1;
1682         }
1683
1684         if (f_send_aggr_buf) {
1685                 dev_dbg(adapter->dev, "data: %s: send aggr buffer: %d %d\n",
1686                         __func__,
1687                                 card->mpa_tx.start_port, card->mpa_tx.ports);
1688                 if (card->supports_sdio_new_mode) {
1689                         u32 port_count;
1690                         int i;
1691
1692                         for (i = 0, port_count = 0; i < card->max_ports; i++)
1693                                 if (card->mpa_tx.ports & BIT(i))
1694                                         port_count++;
1695
1696                         /* Writing data from "start_port + 0" to "start_port +
1697                          * port_count -1", so decrease the count by 1
1698                          */
1699                         port_count--;
1700                         mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1701                                  (port_count << 8)) + card->mpa_tx.start_port;
1702                 } else {
1703                         mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1704                                  (card->mpa_tx.ports << 4)) +
1705                                  card->mpa_tx.start_port;
1706                 }
1707
1708                 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf,
1709                                                  card->mpa_tx.buf_len, mport);
1710
1711                 MP_TX_AGGR_BUF_RESET(card);
1712         }
1713
1714 tx_curr_single:
1715         if (f_send_cur_buf) {
1716                 dev_dbg(adapter->dev, "data: %s: send current buffer %d\n",
1717                         __func__, port);
1718                 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len,
1719                                                  adapter->ioport + port);
1720         }
1721
1722         if (f_postcopy_cur_buf) {
1723                 dev_dbg(adapter->dev, "data: %s: postcopy current buffer\n",
1724                         __func__);
1725                 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1726         }
1727
1728         return ret;
1729 }
1730
1731 /*
1732  * This function downloads data from driver to card.
1733  *
1734  * Both commands and data packets are transferred to the card by this
1735  * function.
1736  *
1737  * This function adds the SDIO specific header to the front of the buffer
1738  * before transferring. The header contains the length of the packet and
1739  * the type. The firmware handles the packets based upon this set type.
1740  */
1741 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter,
1742                                      u8 type, struct sk_buff *skb,
1743                                      struct mwifiex_tx_param *tx_param)
1744 {
1745         struct sdio_mmc_card *card = adapter->card;
1746         int ret;
1747         u32 buf_block_len;
1748         u32 blk_size;
1749         u32 port = CTRL_PORT;
1750         u8 *payload = (u8 *)skb->data;
1751         u32 pkt_len = skb->len;
1752
1753         /* Allocate buffer and copy payload */
1754         blk_size = MWIFIEX_SDIO_BLOCK_SIZE;
1755         buf_block_len = (pkt_len + blk_size - 1) / blk_size;
1756         *(__le16 *)&payload[0] = cpu_to_le16((u16)pkt_len);
1757         *(__le16 *)&payload[2] = cpu_to_le16(type);
1758
1759         /*
1760          * This is SDIO specific header
1761          *  u16 length,
1762          *  u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1763          *  MWIFIEX_TYPE_EVENT = 3)
1764          */
1765         if (type == MWIFIEX_TYPE_DATA) {
1766                 ret = mwifiex_get_wr_port_data(adapter, &port);
1767                 if (ret) {
1768                         dev_err(adapter->dev, "%s: no wr_port available\n",
1769                                 __func__);
1770                         return ret;
1771                 }
1772         } else {
1773                 adapter->cmd_sent = true;
1774                 /* Type must be MWIFIEX_TYPE_CMD */
1775
1776                 if (pkt_len <= INTF_HEADER_LEN ||
1777                     pkt_len > MWIFIEX_UPLD_SIZE)
1778                         dev_err(adapter->dev, "%s: payload=%p, nb=%d\n",
1779                                 __func__, payload, pkt_len);
1780
1781                 if (card->supports_sdio_new_mode)
1782                         port = CMD_PORT_SLCT;
1783         }
1784
1785         /* Transfer data to card */
1786         pkt_len = buf_block_len * blk_size;
1787
1788         if (tx_param)
1789                 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1790                                                    port, tx_param->next_pkt_len
1791                                                    );
1792         else
1793                 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1794                                                    port, 0);
1795
1796         if (ret) {
1797                 if (type == MWIFIEX_TYPE_CMD)
1798                         adapter->cmd_sent = false;
1799                 if (type == MWIFIEX_TYPE_DATA) {
1800                         adapter->data_sent = false;
1801                         /* restore curr_wr_port in error cases */
1802                         card->curr_wr_port = port;
1803                         card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port);
1804                 }
1805         } else {
1806                 if (type == MWIFIEX_TYPE_DATA) {
1807                         if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1808                                 adapter->data_sent = true;
1809                         else
1810                                 adapter->data_sent = false;
1811                 }
1812         }
1813
1814         return ret;
1815 }
1816
1817 /*
1818  * This function allocates the MPA Tx and Rx buffers.
1819  */
1820 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter,
1821                                    u32 mpa_tx_buf_size, u32 mpa_rx_buf_size)
1822 {
1823         struct sdio_mmc_card *card = adapter->card;
1824         u32 rx_buf_size;
1825         int ret = 0;
1826
1827         card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL);
1828         if (!card->mpa_tx.buf) {
1829                 ret = -1;
1830                 goto error;
1831         }
1832
1833         card->mpa_tx.buf_size = mpa_tx_buf_size;
1834
1835         rx_buf_size = max_t(u32, mpa_rx_buf_size,
1836                             (u32)SDIO_MAX_AGGR_BUF_SIZE);
1837         card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL);
1838         if (!card->mpa_rx.buf) {
1839                 ret = -1;
1840                 goto error;
1841         }
1842
1843         card->mpa_rx.buf_size = rx_buf_size;
1844
1845 error:
1846         if (ret) {
1847                 kfree(card->mpa_tx.buf);
1848                 kfree(card->mpa_rx.buf);
1849         }
1850
1851         return ret;
1852 }
1853
1854 /*
1855  * This function unregisters the SDIO device.
1856  *
1857  * The SDIO IRQ is released, the function is disabled and driver
1858  * data is set to null.
1859  */
1860 static void
1861 mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
1862 {
1863         struct sdio_mmc_card *card = adapter->card;
1864
1865         if (adapter->card) {
1866                 sdio_claim_host(card->func);
1867                 sdio_disable_func(card->func);
1868                 sdio_release_host(card->func);
1869         }
1870 }
1871
1872 /*
1873  * This function registers the SDIO device.
1874  *
1875  * SDIO IRQ is claimed, block size is set and driver data is initialized.
1876  */
1877 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
1878 {
1879         int ret;
1880         struct sdio_mmc_card *card = adapter->card;
1881         struct sdio_func *func = card->func;
1882
1883         /* save adapter pointer in card */
1884         card->adapter = adapter;
1885         adapter->tx_buf_size = card->tx_buf_size;
1886
1887         sdio_claim_host(func);
1888
1889         /* Set block size */
1890         ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
1891         sdio_release_host(func);
1892         if (ret) {
1893                 pr_err("cannot set SDIO block size\n");
1894                 return ret;
1895         }
1896
1897
1898         adapter->dev = &func->dev;
1899
1900         strcpy(adapter->fw_name, card->firmware);
1901         adapter->mem_type_mapping_tbl = mem_type_mapping_tbl;
1902         adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl);
1903
1904         return 0;
1905 }
1906
1907 /*
1908  * This function initializes the SDIO driver.
1909  *
1910  * The following initializations steps are followed -
1911  *      - Read the Host interrupt status register to acknowledge
1912  *        the first interrupt got from bootloader
1913  *      - Disable host interrupt mask register
1914  *      - Get SDIO port
1915  *      - Initialize SDIO variables in card
1916  *      - Allocate MP registers
1917  *      - Allocate MPA Tx and Rx buffers
1918  */
1919 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
1920 {
1921         struct sdio_mmc_card *card = adapter->card;
1922         const struct mwifiex_sdio_card_reg *reg = card->reg;
1923         int ret;
1924         u8 sdio_ireg;
1925
1926         sdio_set_drvdata(card->func, card);
1927
1928         /*
1929          * Read the host_int_status_reg for ACK the first interrupt got
1930          * from the bootloader. If we don't do this we get a interrupt
1931          * as soon as we register the irq.
1932          */
1933         mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
1934
1935         /* Get SDIO ioport */
1936         mwifiex_init_sdio_ioport(adapter);
1937
1938         /* Initialize SDIO variables in card */
1939         card->mp_rd_bitmap = 0;
1940         card->mp_wr_bitmap = 0;
1941         card->curr_rd_port = reg->start_rd_port;
1942         card->curr_wr_port = reg->start_wr_port;
1943
1944         card->mp_data_port_mask = reg->data_port_mask;
1945
1946         card->mpa_tx.buf_len = 0;
1947         card->mpa_tx.pkt_cnt = 0;
1948         card->mpa_tx.start_port = 0;
1949
1950         card->mpa_tx.enabled = 1;
1951         card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit;
1952
1953         card->mpa_rx.buf_len = 0;
1954         card->mpa_rx.pkt_cnt = 0;
1955         card->mpa_rx.start_port = 0;
1956
1957         card->mpa_rx.enabled = 1;
1958         card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit;
1959
1960         /* Allocate buffers for SDIO MP-A */
1961         card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL);
1962         if (!card->mp_regs)
1963                 return -ENOMEM;
1964
1965         /* Allocate skb pointer buffers */
1966         card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) *
1967                                        card->mp_agg_pkt_limit, GFP_KERNEL);
1968         card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) *
1969                                        card->mp_agg_pkt_limit, GFP_KERNEL);
1970         ret = mwifiex_alloc_sdio_mpa_buffers(adapter,
1971                                              card->mp_tx_agg_buf_size,
1972                                              card->mp_rx_agg_buf_size);
1973         if (ret) {
1974                 dev_err(adapter->dev, "failed to alloc sdio mp-a buffers\n");
1975                 kfree(card->mp_regs);
1976                 return -1;
1977         }
1978
1979         adapter->auto_tdls = card->can_auto_tdls;
1980         adapter->ext_scan = card->can_ext_scan;
1981         return ret;
1982 }
1983
1984 /*
1985  * This function resets the MPA Tx and Rx buffers.
1986  */
1987 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter)
1988 {
1989         struct sdio_mmc_card *card = adapter->card;
1990
1991         MP_TX_AGGR_BUF_RESET(card);
1992         MP_RX_AGGR_BUF_RESET(card);
1993 }
1994
1995 /*
1996  * This function cleans up the allocated card buffers.
1997  *
1998  * The following are freed by this function -
1999  *      - MP registers
2000  *      - MPA Tx buffer
2001  *      - MPA Rx buffer
2002  */
2003 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
2004 {
2005         struct sdio_mmc_card *card = adapter->card;
2006
2007         kfree(card->mp_regs);
2008         kfree(card->mpa_rx.skb_arr);
2009         kfree(card->mpa_rx.len_arr);
2010         kfree(card->mpa_tx.buf);
2011         kfree(card->mpa_rx.buf);
2012         sdio_set_drvdata(card->func, NULL);
2013         kfree(card);
2014 }
2015
2016 /*
2017  * This function updates the MP end port in card.
2018  */
2019 static void
2020 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port)
2021 {
2022         struct sdio_mmc_card *card = adapter->card;
2023         const struct mwifiex_sdio_card_reg *reg = card->reg;
2024         int i;
2025
2026         card->mp_end_port = port;
2027
2028         card->mp_data_port_mask = reg->data_port_mask;
2029
2030         if (reg->start_wr_port) {
2031                 for (i = 1; i <= card->max_ports - card->mp_end_port; i++)
2032                         card->mp_data_port_mask &=
2033                                         ~(1 << (card->max_ports - i));
2034         }
2035
2036         card->curr_wr_port = reg->start_wr_port;
2037
2038         dev_dbg(adapter->dev, "cmd: mp_end_port %d, data port mask 0x%x\n",
2039                 port, card->mp_data_port_mask);
2040 }
2041
2042 static struct mwifiex_adapter *save_adapter;
2043 static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter)
2044 {
2045         struct sdio_mmc_card *card = adapter->card;
2046         struct mmc_host *target = card->func->card->host;
2047
2048         /* The actual reset operation must be run outside of driver thread.
2049          * This is because mmc_remove_host() will cause the device to be
2050          * instantly destroyed, and the driver then needs to end its thread,
2051          * leading to a deadlock.
2052          *
2053          * We run it in a totally independent workqueue.
2054          */
2055
2056         pr_err("Resetting card...\n");
2057         mmc_remove_host(target);
2058         /* 200ms delay is based on experiment with sdhci controller */
2059         mdelay(200);
2060         target->rescan_entered = 0; /* rescan non-removable cards */
2061         mmc_add_host(target);
2062 }
2063
2064 /* This function read/write firmware */
2065 static enum
2066 rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter,
2067                                        u8 doneflag)
2068 {
2069         struct sdio_mmc_card *card = adapter->card;
2070         int ret, tries;
2071         u8 ctrl_data = 0;
2072
2073         sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl,
2074                     &ret);
2075         if (ret) {
2076                 dev_err(adapter->dev, "SDIO Write ERR\n");
2077                 return RDWR_STATUS_FAILURE;
2078         }
2079         for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2080                 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
2081                                        &ret);
2082                 if (ret) {
2083                         dev_err(adapter->dev, "SDIO read err\n");
2084                         return RDWR_STATUS_FAILURE;
2085                 }
2086                 if (ctrl_data == FW_DUMP_DONE)
2087                         break;
2088                 if (doneflag && ctrl_data == doneflag)
2089                         return RDWR_STATUS_DONE;
2090                 if (ctrl_data != FW_DUMP_HOST_READY) {
2091                         dev_info(adapter->dev,
2092                                  "The ctrl reg was changed, re-try again!\n");
2093                         sdio_writeb(card->func, FW_DUMP_HOST_READY,
2094                                     card->reg->fw_dump_ctrl, &ret);
2095                         if (ret) {
2096                                 dev_err(adapter->dev, "SDIO write err\n");
2097                                 return RDWR_STATUS_FAILURE;
2098                         }
2099                 }
2100                 usleep_range(100, 200);
2101         }
2102         if (ctrl_data == FW_DUMP_HOST_READY) {
2103                 dev_err(adapter->dev, "Fail to pull ctrl_data\n");
2104                 return RDWR_STATUS_FAILURE;
2105         }
2106
2107         return RDWR_STATUS_SUCCESS;
2108 }
2109
2110 /* This function dump firmware memory to file */
2111 static void mwifiex_sdio_fw_dump_work(struct mwifiex_adapter *adapter)
2112 {
2113         struct sdio_mmc_card *card = adapter->card;
2114         int ret = 0;
2115         unsigned int reg, reg_start, reg_end;
2116         u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0;
2117         enum rdwr_status stat;
2118         u32 memory_size;
2119         static char *env[] = { "DRIVER=mwifiex_sdio", "EVENT=fw_dump", NULL };
2120
2121         mwifiex_dump_drv_info(adapter);
2122
2123         if (!card->can_dump_fw)
2124                 return;
2125
2126         for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
2127                 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2128
2129                 if (entry->mem_ptr) {
2130                         vfree(entry->mem_ptr);
2131                         entry->mem_ptr = NULL;
2132                 }
2133                 entry->mem_size = 0;
2134         }
2135
2136         mwifiex_pm_wakeup_card(adapter);
2137         sdio_claim_host(card->func);
2138
2139         dev_info(adapter->dev, "== mwifiex firmware dump start ==\n");
2140
2141         stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2142         if (stat == RDWR_STATUS_FAILURE)
2143                 goto done;
2144
2145         reg = card->reg->fw_dump_start;
2146         /* Read the number of the memories which will dump */
2147         dump_num = sdio_readb(card->func, reg, &ret);
2148         if (ret) {
2149                 dev_err(adapter->dev, "SDIO read memory length err\n");
2150                 goto done;
2151         }
2152
2153         /* Read the length of every memory which will dump */
2154         for (idx = 0; idx < dump_num; idx++) {
2155                 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2156
2157                 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2158                 if (stat == RDWR_STATUS_FAILURE)
2159                         goto done;
2160
2161                 memory_size = 0;
2162                 reg = card->reg->fw_dump_start;
2163                 for (i = 0; i < 4; i++) {
2164                         read_reg = sdio_readb(card->func, reg, &ret);
2165                         if (ret) {
2166                                 dev_err(adapter->dev, "SDIO read err\n");
2167                                 goto done;
2168                         }
2169                         memory_size |= (read_reg << i*8);
2170                         reg++;
2171                 }
2172
2173                 if (memory_size == 0) {
2174                         dev_info(adapter->dev, "Firmware dump Finished!\n");
2175                         break;
2176                 }
2177
2178                 dev_info(adapter->dev,
2179                          "%s_SIZE=0x%x\n", entry->mem_name, memory_size);
2180                 entry->mem_ptr = vmalloc(memory_size + 1);
2181                 entry->mem_size = memory_size;
2182                 if (!entry->mem_ptr) {
2183                         dev_err(adapter->dev, "Vmalloc %s failed\n",
2184                                 entry->mem_name);
2185                         goto done;
2186                 }
2187                 dbg_ptr = entry->mem_ptr;
2188                 end_ptr = dbg_ptr + memory_size;
2189
2190                 doneflag = entry->done_flag;
2191                 dev_info(adapter->dev, "Start %s output, please wait...\n",
2192                          entry->mem_name);
2193
2194                 do {
2195                         stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2196                         if (stat == RDWR_STATUS_FAILURE)
2197                                 goto done;
2198
2199                         reg_start = card->reg->fw_dump_start;
2200                         reg_end = card->reg->fw_dump_end;
2201                         for (reg = reg_start; reg <= reg_end; reg++) {
2202                                 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2203                                 if (ret) {
2204                                         dev_err(adapter->dev,
2205                                                 "SDIO read err\n");
2206                                         goto done;
2207                                 }
2208                                 if (dbg_ptr < end_ptr)
2209                                         dbg_ptr++;
2210                                 else
2211                                         dev_err(adapter->dev,
2212                                                 "Allocated buf not enough\n");
2213                         }
2214
2215                         if (stat != RDWR_STATUS_DONE)
2216                                 continue;
2217
2218                         dev_info(adapter->dev, "%s done: size=0x%tx\n",
2219                                  entry->mem_name, dbg_ptr - entry->mem_ptr);
2220                         break;
2221                 } while (1);
2222         }
2223         dev_info(adapter->dev, "== mwifiex firmware dump end ==\n");
2224
2225         kobject_uevent_env(&adapter->wiphy->dev.kobj, KOBJ_CHANGE, env);
2226
2227 done:
2228         sdio_release_host(card->func);
2229         adapter->curr_mem_idx = 0;
2230 }
2231
2232 static void mwifiex_sdio_work(struct work_struct *work)
2233 {
2234         if (test_and_clear_bit(MWIFIEX_IFACE_WORK_FW_DUMP,
2235                                &iface_work_flags))
2236                 mwifiex_sdio_fw_dump_work(save_adapter);
2237         if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET,
2238                                &iface_work_flags))
2239                 mwifiex_sdio_card_reset_work(save_adapter);
2240 }
2241
2242 static DECLARE_WORK(sdio_work, mwifiex_sdio_work);
2243 /* This function resets the card */
2244 static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter)
2245 {
2246         save_adapter = adapter;
2247         if (test_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags))
2248                 return;
2249
2250         set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags);
2251
2252         schedule_work(&sdio_work);
2253 }
2254
2255 /* This function dumps FW information */
2256 static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter)
2257 {
2258         save_adapter = adapter;
2259         if (test_bit(MWIFIEX_IFACE_WORK_FW_DUMP, &iface_work_flags))
2260                 return;
2261
2262         set_bit(MWIFIEX_IFACE_WORK_FW_DUMP, &iface_work_flags);
2263         schedule_work(&sdio_work);
2264 }
2265
2266 /* Function to dump SDIO function registers and SDIO scratch registers in case
2267  * of FW crash
2268  */
2269 static int
2270 mwifiex_sdio_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf)
2271 {
2272         char *p = drv_buf;
2273         struct sdio_mmc_card *cardp = adapter->card;
2274         int ret = 0;
2275         u8 count, func, data, index = 0, size = 0;
2276         u8 reg, reg_start, reg_end;
2277         char buf[256], *ptr;
2278
2279         if (!p)
2280                 return 0;
2281
2282         dev_info(adapter->dev, "SDIO register DUMP START\n");
2283
2284         mwifiex_pm_wakeup_card(adapter);
2285
2286         sdio_claim_host(cardp->func);
2287
2288         for (count = 0; count < 5; count++) {
2289                 memset(buf, 0, sizeof(buf));
2290                 ptr = buf;
2291
2292                 switch (count) {
2293                 case 0:
2294                         /* Read the registers of SDIO function0 */
2295                         func = count;
2296                         reg_start = 0;
2297                         reg_end = 9;
2298                         break;
2299                 case 1:
2300                         /* Read the registers of SDIO function1 */
2301                         func = count;
2302                         reg_start = cardp->reg->func1_dump_reg_start;
2303                         reg_end = cardp->reg->func1_dump_reg_end;
2304                         break;
2305                 case 2:
2306                         index = 0;
2307                         func = 1;
2308                         reg_start = cardp->reg->func1_spec_reg_table[index++];
2309                         size = cardp->reg->func1_spec_reg_num;
2310                         reg_end = cardp->reg->func1_spec_reg_table[size-1];
2311                         break;
2312                 default:
2313                         /* Read the scratch registers of SDIO function1 */
2314                         if (count == 4)
2315                                 mdelay(100);
2316                         func = 1;
2317                         reg_start = cardp->reg->func1_scratch_reg;
2318                         reg_end = reg_start + MWIFIEX_SDIO_SCRATCH_SIZE;
2319                 }
2320
2321                 if (count != 2)
2322                         ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
2323                                        func, reg_start, reg_end);
2324                 else
2325                         ptr += sprintf(ptr, "SDIO Func%d: ", func);
2326
2327                 for (reg = reg_start; reg <= reg_end;) {
2328                         if (func == 0)
2329                                 data = sdio_f0_readb(cardp->func, reg, &ret);
2330                         else
2331                                 data = sdio_readb(cardp->func, reg, &ret);
2332
2333                         if (count == 2)
2334                                 ptr += sprintf(ptr, "(%#x) ", reg);
2335                         if (!ret) {
2336                                 ptr += sprintf(ptr, "%02x ", data);
2337                         } else {
2338                                 ptr += sprintf(ptr, "ERR");
2339                                 break;
2340                         }
2341
2342                         if (count == 2 && reg < reg_end)
2343                                 reg = cardp->reg->func1_spec_reg_table[index++];
2344                         else
2345                                 reg++;
2346                 }
2347
2348                 dev_info(adapter->dev, "%s\n", buf);
2349                 p += sprintf(p, "%s\n", buf);
2350         }
2351
2352         sdio_release_host(cardp->func);
2353
2354         dev_info(adapter->dev, "SDIO register DUMP END\n");
2355
2356         return p - drv_buf;
2357 }
2358
2359 static struct mwifiex_if_ops sdio_ops = {
2360         .init_if = mwifiex_init_sdio,
2361         .cleanup_if = mwifiex_cleanup_sdio,
2362         .check_fw_status = mwifiex_check_fw_status,
2363         .prog_fw = mwifiex_prog_fw_w_helper,
2364         .register_dev = mwifiex_register_dev,
2365         .unregister_dev = mwifiex_unregister_dev,
2366         .enable_int = mwifiex_sdio_enable_host_int,
2367         .disable_int = mwifiex_sdio_disable_host_int,
2368         .process_int_status = mwifiex_process_int_status,
2369         .host_to_card = mwifiex_sdio_host_to_card,
2370         .wakeup = mwifiex_pm_wakeup_card,
2371         .wakeup_complete = mwifiex_pm_wakeup_card_complete,
2372
2373         /* SDIO specific */
2374         .update_mp_end_port = mwifiex_update_mp_end_port,
2375         .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf,
2376         .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete,
2377         .event_complete = mwifiex_sdio_event_complete,
2378         .card_reset = mwifiex_sdio_card_reset,
2379         .fw_dump = mwifiex_sdio_fw_dump,
2380         .reg_dump = mwifiex_sdio_reg_dump,
2381         .deaggr_pkt = mwifiex_deaggr_sdio_pkt,
2382 };
2383
2384 /*
2385  * This function initializes the SDIO driver.
2386  *
2387  * This initiates the semaphore and registers the device with
2388  * SDIO bus.
2389  */
2390 static int
2391 mwifiex_sdio_init_module(void)
2392 {
2393         sema_init(&add_remove_card_sem, 1);
2394
2395         /* Clear the flag in case user removes the card. */
2396         user_rmmod = 0;
2397
2398         return sdio_register_driver(&mwifiex_sdio);
2399 }
2400
2401 /*
2402  * This function cleans up the SDIO driver.
2403  *
2404  * The following major steps are followed for cleanup -
2405  *      - Resume the device if its suspended
2406  *      - Disconnect the device if connected
2407  *      - Shutdown the firmware
2408  *      - Unregister the device from SDIO bus.
2409  */
2410 static void
2411 mwifiex_sdio_cleanup_module(void)
2412 {
2413         if (!down_interruptible(&add_remove_card_sem))
2414                 up(&add_remove_card_sem);
2415
2416         /* Set the flag as user is removing this module. */
2417         user_rmmod = 1;
2418         cancel_work_sync(&sdio_work);
2419
2420         sdio_unregister_driver(&mwifiex_sdio);
2421 }
2422
2423 module_init(mwifiex_sdio_init_module);
2424 module_exit(mwifiex_sdio_cleanup_module);
2425
2426 MODULE_AUTHOR("Marvell International Ltd.");
2427 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION);
2428 MODULE_VERSION(SDIO_VERSION);
2429 MODULE_LICENSE("GPL v2");
2430 MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME);
2431 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME);
2432 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME);
2433 MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME);
2434 MODULE_FIRMWARE(SD8887_DEFAULT_FW_NAME);