drivers/bluetooth/btmrvl_sdio.c

   1 /**
   2  * Marvell BT-over-SDIO driver: SDIO interface related functions.
   3  *
   4  * Copyright (C) 2009, 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  *
  15  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  18  * this warranty disclaimer.
  19  **/
  20
  21 #include <linux/firmware.h>
  22 #include <linux/slab.h>
  23
  24 #include <linux/mmc/sdio_ids.h>
  25 #include <linux/mmc/sdio_func.h>
  26 #include <linux/module.h>
  27 #include <linux/devcoredump.h>
  28
  29 #include <net/bluetooth/bluetooth.h>
  30 #include <net/bluetooth/hci_core.h>
  31
  32 #include "btmrvl_drv.h"
  33 #include "btmrvl_sdio.h"
  34
  35 #define VERSION "1.0"
  36
  37 static struct memory_type_mapping mem_type_mapping_tbl[] = {
  38         {"ITCM", NULL, 0, 0xF0},
  39         {"DTCM", NULL, 0, 0xF1},
  40         {"SQRAM", NULL, 0, 0xF2},
  41         {"APU", NULL, 0, 0xF3},
  42         {"CIU", NULL, 0, 0xF4},
  43         {"ICU", NULL, 0, 0xF5},
  44         {"MAC", NULL, 0, 0xF6},
  45         {"EXT7", NULL, 0, 0xF7},
  46         {"EXT8", NULL, 0, 0xF8},
  47         {"EXT9", NULL, 0, 0xF9},
  48         {"EXT10", NULL, 0, 0xFA},
  49         {"EXT11", NULL, 0, 0xFB},
  50         {"EXT12", NULL, 0, 0xFC},
  51         {"EXT13", NULL, 0, 0xFD},
  52         {"EXTLAST", NULL, 0, 0xFE},
  53 };
  54
  55 /* The btmrvl_sdio_remove() callback function is called
  56  * when user removes this module from kernel space or ejects
  57  * the card from the slot. The driver handles these 2 cases
  58  * differently.
  59  * If the user is removing the module, a MODULE_SHUTDOWN_REQ
  60  * command is sent to firmware and interrupt will be disabled.
  61  * If the card is removed, there is no need to send command
  62  * or disable interrupt.
  63  *
  64  * The variable 'user_rmmod' is used to distinguish these two
  65  * scenarios. This flag is initialized as FALSE in case the card
  66  * is removed, and will be set to TRUE for module removal when
  67  * module_exit function is called.
  68  */
  69 static u8 user_rmmod;
  70 static u8 sdio_ireg;
  71
  72 static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = {
  73         .cfg = 0x03,
  74         .host_int_mask = 0x04,
  75         .host_intstatus = 0x05,
  76         .card_status = 0x20,
  77         .sq_read_base_addr_a0 = 0x10,
  78         .sq_read_base_addr_a1 = 0x11,
  79         .card_fw_status0 = 0x40,
  80         .card_fw_status1 = 0x41,
  81         .card_rx_len = 0x42,
  82         .card_rx_unit = 0x43,
  83         .io_port_0 = 0x00,
  84         .io_port_1 = 0x01,
  85         .io_port_2 = 0x02,
  86         .int_read_to_clear = false,
  87 };
  88 static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = {
  89         .cfg = 0x00,
  90         .host_int_mask = 0x02,
  91         .host_intstatus = 0x03,
  92         .card_status = 0x30,
  93         .sq_read_base_addr_a0 = 0x40,
  94         .sq_read_base_addr_a1 = 0x41,
  95         .card_revision = 0x5c,
  96         .card_fw_status0 = 0x60,
  97         .card_fw_status1 = 0x61,
  98         .card_rx_len = 0x62,
  99         .card_rx_unit = 0x63,
 100         .io_port_0 = 0x78,
 101         .io_port_1 = 0x79,
 102         .io_port_2 = 0x7a,
 103         .int_read_to_clear = false,
 104 };
 105
 106 static const struct btmrvl_sdio_card_reg btmrvl_reg_8887 = {
 107         .cfg = 0x00,
 108         .host_int_mask = 0x08,
 109         .host_intstatus = 0x0C,
 110         .card_status = 0x5C,
 111         .sq_read_base_addr_a0 = 0x6C,
 112         .sq_read_base_addr_a1 = 0x6D,
 113         .card_revision = 0xC8,
 114         .card_fw_status0 = 0x88,
 115         .card_fw_status1 = 0x89,
 116         .card_rx_len = 0x8A,
 117         .card_rx_unit = 0x8B,
 118         .io_port_0 = 0xE4,
 119         .io_port_1 = 0xE5,
 120         .io_port_2 = 0xE6,
 121         .int_read_to_clear = true,
 122         .host_int_rsr = 0x04,
 123         .card_misc_cfg = 0xD8,
 124 };
 125
 126 static const struct btmrvl_sdio_card_reg btmrvl_reg_8897 = {
 127         .cfg = 0x00,
 128         .host_int_mask = 0x02,
 129         .host_intstatus = 0x03,
 130         .card_status = 0x50,
 131         .sq_read_base_addr_a0 = 0x60,
 132         .sq_read_base_addr_a1 = 0x61,
 133         .card_revision = 0xbc,
 134         .card_fw_status0 = 0xc0,
 135         .card_fw_status1 = 0xc1,
 136         .card_rx_len = 0xc2,
 137         .card_rx_unit = 0xc3,
 138         .io_port_0 = 0xd8,
 139         .io_port_1 = 0xd9,
 140         .io_port_2 = 0xda,
 141         .int_read_to_clear = true,
 142         .host_int_rsr = 0x01,
 143         .card_misc_cfg = 0xcc,
 144         .fw_dump_ctrl = 0xe2,
 145         .fw_dump_start = 0xe3,
 146         .fw_dump_end = 0xea,
 147 };
 148
 149 static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
 150         .helper         = "mrvl/sd8688_helper.bin",
 151         .firmware       = "mrvl/sd8688.bin",
 152         .reg            = &btmrvl_reg_8688,
 153         .support_pscan_win_report = false,
 154         .sd_blksz_fw_dl = 64,
 155         .supports_fw_dump = false,
 156 };
 157
 158 static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
 159         .helper         = NULL,
 160         .firmware       = "mrvl/sd8787_uapsta.bin",
 161         .reg            = &btmrvl_reg_87xx,
 162         .support_pscan_win_report = false,
 163         .sd_blksz_fw_dl = 256,
 164         .supports_fw_dump = false,
 165 };
 166
 167 static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
 168         .helper         = NULL,
 169         .firmware       = "mrvl/sd8797_uapsta.bin",
 170         .reg            = &btmrvl_reg_87xx,
 171         .support_pscan_win_report = false,
 172         .sd_blksz_fw_dl = 256,
 173         .supports_fw_dump = false,
 174 };
 175
 176 static const struct btmrvl_sdio_device btmrvl_sdio_sd8887 = {
 177         .helper         = NULL,
 178         .firmware       = "mrvl/sd8887_uapsta.bin",
 179         .reg            = &btmrvl_reg_8887,
 180         .support_pscan_win_report = true,
 181         .sd_blksz_fw_dl = 256,
 182         .supports_fw_dump = false,
 183 };
 184
 185 static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = {
 186         .helper         = NULL,
 187         .firmware       = "mrvl/sd8897_uapsta.bin",
 188         .reg            = &btmrvl_reg_8897,
 189         .support_pscan_win_report = true,
 190         .sd_blksz_fw_dl = 256,
 191         .supports_fw_dump = true,
 192 };
 193
 194 static const struct sdio_device_id btmrvl_sdio_ids[] = {
 195         /* Marvell SD8688 Bluetooth device */
 196         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105),
 197                         .driver_data = (unsigned long) &btmrvl_sdio_sd8688 },
 198         /* Marvell SD8787 Bluetooth device */
 199         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A),
 200                         .driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
 201         /* Marvell SD8787 Bluetooth AMP device */
 202         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911B),
 203                         .driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
 204         /* Marvell SD8797 Bluetooth device */
 205         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A),
 206                         .driver_data = (unsigned long) &btmrvl_sdio_sd8797 },
 207         /* Marvell SD8887 Bluetooth device */
 208         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9136),
 209                         .driver_data = (unsigned long)&btmrvl_sdio_sd8887 },
 210         /* Marvell SD8897 Bluetooth device */
 211         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912E),
 212                         .driver_data = (unsigned long) &btmrvl_sdio_sd8897 },
 213
 214         { }     /* Terminating entry */
 215 };
 216
 217 MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
 218
 219 static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card)
 220 {
 221         u8 reg;
 222         int ret;
 223
 224         reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret);
 225         if (!ret)
 226                 card->rx_unit = reg;
 227
 228         return ret;
 229 }
 230
 231 static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat)
 232 {
 233         u8 fws0, fws1;
 234         int ret;
 235
 236         *dat = 0;
 237
 238         fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
 239         if (ret)
 240                 return -EIO;
 241
 242         fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret);
 243         if (ret)
 244                 return -EIO;
 245
 246         *dat = (((u16) fws1) << 8) | fws0;
 247
 248         return 0;
 249 }
 250
 251 static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat)
 252 {
 253         u8 reg;
 254         int ret;
 255
 256         reg = sdio_readb(card->func, card->reg->card_rx_len, &ret);
 257         if (!ret)
 258                 *dat = (u16) reg << card->rx_unit;
 259
 260         return ret;
 261 }
 262
 263 static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card,
 264                                                                 u8 mask)
 265 {
 266         int ret;
 267
 268         sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret);
 269         if (ret) {
 270                 BT_ERR("Unable to enable the host interrupt!");
 271                 ret = -EIO;
 272         }
 273
 274         return ret;
 275 }
 276
 277 static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card,
 278                                                                 u8 mask)
 279 {
 280         u8 host_int_mask;
 281         int ret;
 282
 283         host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret);
 284         if (ret)
 285                 return -EIO;
 286
 287         host_int_mask &= ~mask;
 288
 289         sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret);
 290         if (ret < 0) {
 291                 BT_ERR("Unable to disable the host interrupt!");
 292                 return -EIO;
 293         }
 294
 295         return 0;
 296 }
 297
 298 static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits)
 299 {
 300         unsigned int tries;
 301         u8 status;
 302         int ret;
 303
 304         for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) {
 305                 status = sdio_readb(card->func, card->reg->card_status, &ret);
 306                 if (ret)
 307                         goto failed;
 308                 if ((status & bits) == bits)
 309                         return ret;
 310
 311                 udelay(1);
 312         }
 313
 314         ret = -ETIMEDOUT;
 315
 316 failed:
 317         BT_ERR("FAILED! ret=%d", ret);
 318
 319         return ret;
 320 }
 321
 322 static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card,
 323                                                                 int pollnum)
 324 {
 325         u16 firmwarestat;
 326         int tries, ret;
 327
 328          /* Wait for firmware to become ready */
 329         for (tries = 0; tries < pollnum; tries++) {
 330                 sdio_claim_host(card->func);
 331                 ret = btmrvl_sdio_read_fw_status(card, &firmwarestat);
 332                 sdio_release_host(card->func);
 333                 if (ret < 0)
 334                         continue;
 335
 336                 if (firmwarestat == FIRMWARE_READY)
 337                         return 0;
 338
 339                 msleep(10);
 340         }
 341
 342         return -ETIMEDOUT;
 343 }
 344
 345 static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
 346 {
 347         const struct firmware *fw_helper = NULL;
 348         const u8 *helper = NULL;
 349         int ret;
 350         void *tmphlprbuf = NULL;
 351         int tmphlprbufsz, hlprblknow, helperlen;
 352         u8 *helperbuf;
 353         u32 tx_len;
 354
 355         ret = request_firmware(&fw_helper, card->helper,
 356                                                 &card->func->dev);
 357         if ((ret < 0) || !fw_helper) {
 358                 BT_ERR("request_firmware(helper) failed, error code = %d",
 359                                                                         ret);
 360                 ret = -ENOENT;
 361                 goto done;
 362         }
 363
 364         helper = fw_helper->data;
 365         helperlen = fw_helper->size;
 366
 367         BT_DBG("Downloading helper image (%d bytes), block size %d bytes",
 368                                                 helperlen, SDIO_BLOCK_SIZE);
 369
 370         tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
 371
 372         tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL);
 373         if (!tmphlprbuf) {
 374                 BT_ERR("Unable to allocate buffer for helper."
 375                         " Terminating download");
 376                 ret = -ENOMEM;
 377                 goto done;
 378         }
 379
 380         helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
 381
 382         /* Perform helper data transfer */
 383         tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE)
 384                         - SDIO_HEADER_LEN;
 385         hlprblknow = 0;
 386
 387         do {
 388                 ret = btmrvl_sdio_poll_card_status(card,
 389                                             CARD_IO_READY | DN_LD_CARD_RDY);
 390                 if (ret < 0) {
 391                         BT_ERR("Helper download poll status timeout @ %d",
 392                                 hlprblknow);
 393                         goto done;
 394                 }
 395
 396                 /* Check if there is more data? */
 397                 if (hlprblknow >= helperlen)
 398                         break;
 399
 400                 if (helperlen - hlprblknow < tx_len)
 401                         tx_len = helperlen - hlprblknow;
 402
 403                 /* Little-endian */
 404                 helperbuf[0] = ((tx_len & 0x000000ff) >> 0);
 405                 helperbuf[1] = ((tx_len & 0x0000ff00) >> 8);
 406                 helperbuf[2] = ((tx_len & 0x00ff0000) >> 16);
 407                 helperbuf[3] = ((tx_len & 0xff000000) >> 24);
 408
 409                 memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow],
 410                                 tx_len);
 411
 412                 /* Now send the data */
 413                 ret = sdio_writesb(card->func, card->ioport, helperbuf,
 414                                 FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE);
 415                 if (ret < 0) {
 416                         BT_ERR("IO error during helper download @ %d",
 417                                 hlprblknow);
 418                         goto done;
 419                 }
 420
 421                 hlprblknow += tx_len;
 422         } while (true);
 423
 424         BT_DBG("Transferring helper image EOF block");
 425
 426         memset(helperbuf, 0x0, SDIO_BLOCK_SIZE);
 427
 428         ret = sdio_writesb(card->func, card->ioport, helperbuf,
 429                                                         SDIO_BLOCK_SIZE);
 430         if (ret < 0) {
 431                 BT_ERR("IO error in writing helper image EOF block");
 432                 goto done;
 433         }
 434
 435         ret = 0;
 436
 437 done:
 438         kfree(tmphlprbuf);
 439         release_firmware(fw_helper);
 440         return ret;
 441 }
 442
 443 static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
 444 {
 445         const struct firmware *fw_firmware = NULL;
 446         const u8 *firmware = NULL;
 447         int firmwarelen, tmpfwbufsz, ret;
 448         unsigned int tries, offset;
 449         u8 base0, base1;
 450         void *tmpfwbuf = NULL;
 451         u8 *fwbuf;
 452         u16 len, blksz_dl = card->sd_blksz_fw_dl;
 453         int txlen = 0, tx_blocks = 0, count = 0;
 454
 455         ret = request_firmware(&fw_firmware, card->firmware,
 456                                                         &card->func->dev);
 457         if ((ret < 0) || !fw_firmware) {
 458                 BT_ERR("request_firmware(firmware) failed, error code = %d",
 459                                                                         ret);
 460                 ret = -ENOENT;
 461                 goto done;
 462         }
 463
 464         firmware = fw_firmware->data;
 465         firmwarelen = fw_firmware->size;
 466
 467         BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
 468
 469         tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
 470         tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL);
 471         if (!tmpfwbuf) {
 472                 BT_ERR("Unable to allocate buffer for firmware."
 473                        " Terminating download");
 474                 ret = -ENOMEM;
 475                 goto done;
 476         }
 477
 478         /* Ensure aligned firmware buffer */
 479         fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
 480
 481         /* Perform firmware data transfer */
 482         offset = 0;
 483         do {
 484                 ret = btmrvl_sdio_poll_card_status(card,
 485                                         CARD_IO_READY | DN_LD_CARD_RDY);
 486                 if (ret < 0) {
 487                         BT_ERR("FW download with helper poll status"
 488                                                 " timeout @ %d", offset);
 489                         goto done;
 490                 }
 491
 492                 /* Check if there is more data ? */
 493                 if (offset >= firmwarelen)
 494                         break;
 495
 496                 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
 497                         base0 = sdio_readb(card->func,
 498                                         card->reg->sq_read_base_addr_a0, &ret);
 499                         if (ret) {
 500                                 BT_ERR("BASE0 register read failed:"
 501                                         " base0 = 0x%04X(%d)."
 502                                         " Terminating download",
 503                                         base0, base0);
 504                                 ret = -EIO;
 505                                 goto done;
 506                         }
 507                         base1 = sdio_readb(card->func,
 508                                         card->reg->sq_read_base_addr_a1, &ret);
 509                         if (ret) {
 510                                 BT_ERR("BASE1 register read failed:"
 511                                         " base1 = 0x%04X(%d)."
 512                                         " Terminating download",
 513                                         base1, base1);
 514                                 ret = -EIO;
 515                                 goto done;
 516                         }
 517
 518                         len = (((u16) base1) << 8) | base0;
 519                         if (len)
 520                                 break;
 521
 522                         udelay(10);
 523                 }
 524
 525                 if (!len)
 526                         break;
 527                 else if (len > BTM_UPLD_SIZE) {
 528                         BT_ERR("FW download failure @%d, invalid length %d",
 529                                                                 offset, len);
 530                         ret = -EINVAL;
 531                         goto done;
 532                 }
 533
 534                 txlen = len;
 535
 536                 if (len & BIT(0)) {
 537                         count++;
 538                         if (count > MAX_WRITE_IOMEM_RETRY) {
 539                                 BT_ERR("FW download failure @%d, "
 540                                         "over max retry count", offset);
 541                                 ret = -EIO;
 542                                 goto done;
 543                         }
 544                         BT_ERR("FW CRC error indicated by the helper: "
 545                                 "len = 0x%04X, txlen = %d", len, txlen);
 546                         len &= ~BIT(0);
 547                         /* Set txlen to 0 so as to resend from same offset */
 548                         txlen = 0;
 549                 } else {
 550                         count = 0;
 551
 552                         /* Last block ? */
 553                         if (firmwarelen - offset < txlen)
 554                                 txlen = firmwarelen - offset;
 555
 556                         tx_blocks = DIV_ROUND_UP(txlen, blksz_dl);
 557
 558                         memcpy(fwbuf, &firmware[offset], txlen);
 559                 }
 560
 561                 ret = sdio_writesb(card->func, card->ioport, fwbuf,
 562                                                 tx_blocks * blksz_dl);
 563
 564                 if (ret < 0) {
 565                         BT_ERR("FW download, writesb(%d) failed @%d",
 566                                                         count, offset);
 567                         sdio_writeb(card->func, HOST_CMD53_FIN,
 568                                                 card->reg->cfg, &ret);
 569                         if (ret)
 570                                 BT_ERR("writeb failed (CFG)");
 571                 }
 572
 573                 offset += txlen;
 574         } while (true);
 575
 576         BT_DBG("FW download over, size %d bytes", offset);
 577
 578         ret = 0;
 579
 580 done:
 581         kfree(tmpfwbuf);
 582         release_firmware(fw_firmware);
 583         return ret;
 584 }
 585
 586 static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
 587 {
 588         u16 buf_len = 0;
 589         int ret, num_blocks, blksz;
 590         struct sk_buff *skb = NULL;
 591         u32 type;
 592         u8 *payload = NULL;
 593         struct hci_dev *hdev = priv->btmrvl_dev.hcidev;
 594         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
 595
 596         if (!card || !card->func) {
 597                 BT_ERR("card or function is NULL!");
 598                 ret = -EINVAL;
 599                 goto exit;
 600         }
 601
 602         /* Read the length of data to be transferred */
 603         ret = btmrvl_sdio_read_rx_len(card, &buf_len);
 604         if (ret < 0) {
 605                 BT_ERR("read rx_len failed");
 606                 ret = -EIO;
 607                 goto exit;
 608         }
 609
 610         blksz = SDIO_BLOCK_SIZE;
 611         num_blocks = DIV_ROUND_UP(buf_len, blksz);
 612
 613         if (buf_len <= SDIO_HEADER_LEN
 614             || (num_blocks * blksz) > ALLOC_BUF_SIZE) {
 615                 BT_ERR("invalid packet length: %d", buf_len);
 616                 ret = -EINVAL;
 617                 goto exit;
 618         }
 619
 620         /* Allocate buffer */
 621         skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_ATOMIC);
 622         if (skb == NULL) {
 623                 BT_ERR("No free skb");
 624                 ret = -ENOMEM;
 625                 goto exit;
 626         }
 627
 628         if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
 629                 skb_put(skb, (unsigned long) skb->data &
 630                                         (BTSDIO_DMA_ALIGN - 1));
 631                 skb_pull(skb, (unsigned long) skb->data &
 632                                         (BTSDIO_DMA_ALIGN - 1));
 633         }
 634
 635         payload = skb->data;
 636
 637         ret = sdio_readsb(card->func, payload, card->ioport,
 638                           num_blocks * blksz);
 639         if (ret < 0) {
 640                 BT_ERR("readsb failed: %d", ret);
 641                 ret = -EIO;
 642                 goto exit;
 643         }
 644
 645         /* This is SDIO specific header length: byte[2][1][0], type: byte[3]
 646          * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor)
 647          */
 648
 649         buf_len = payload[0];
 650         buf_len |= payload[1] << 8;
 651         buf_len |= payload[2] << 16;
 652
 653         if (buf_len > blksz * num_blocks) {
 654                 BT_ERR("Skip incorrect packet: hdrlen %d buffer %d",
 655                        buf_len, blksz * num_blocks);
 656                 ret = -EIO;
 657                 goto exit;
 658         }
 659
 660         type = payload[3];
 661
 662         switch (type) {
 663         case HCI_ACLDATA_PKT:
 664         case HCI_SCODATA_PKT:
 665         case HCI_EVENT_PKT:
 666                 bt_cb(skb)->pkt_type = type;
 667                 skb_put(skb, buf_len);
 668                 skb_pull(skb, SDIO_HEADER_LEN);
 669
 670                 if (type == HCI_EVENT_PKT) {
 671                         if (btmrvl_check_evtpkt(priv, skb))
 672                                 hci_recv_frame(hdev, skb);
 673                 } else {
 674                         hci_recv_frame(hdev, skb);
 675                 }
 676
 677                 hdev->stat.byte_rx += buf_len;
 678                 break;
 679
 680         case MRVL_VENDOR_PKT:
 681                 bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
 682                 skb_put(skb, buf_len);
 683                 skb_pull(skb, SDIO_HEADER_LEN);
 684
 685                 if (btmrvl_process_event(priv, skb))
 686                         hci_recv_frame(hdev, skb);
 687
 688                 hdev->stat.byte_rx += buf_len;
 689                 break;
 690
 691         default:
 692                 BT_ERR("Unknown packet type:%d", type);
 693                 BT_ERR("hex: %*ph", blksz * num_blocks, payload);
 694
 695                 kfree_skb(skb);
 696                 skb = NULL;
 697                 break;
 698         }
 699
 700 exit:
 701         if (ret) {
 702                 hdev->stat.err_rx++;
 703                 kfree_skb(skb);
 704         }
 705
 706         return ret;
 707 }
 708
 709 static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv)
 710 {
 711         ulong flags;
 712         u8 ireg;
 713         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
 714
 715         spin_lock_irqsave(&priv->driver_lock, flags);
 716         ireg = sdio_ireg;
 717         sdio_ireg = 0;
 718         spin_unlock_irqrestore(&priv->driver_lock, flags);
 719
 720         sdio_claim_host(card->func);
 721         if (ireg & DN_LD_HOST_INT_STATUS) {
 722                 if (priv->btmrvl_dev.tx_dnld_rdy)
 723                         BT_DBG("tx_done already received: "
 724                                 " int_status=0x%x", ireg);
 725                 else
 726                         priv->btmrvl_dev.tx_dnld_rdy = true;
 727         }
 728
 729         if (ireg & UP_LD_HOST_INT_STATUS)
 730                 btmrvl_sdio_card_to_host(priv);
 731
 732         sdio_release_host(card->func);
 733
 734         return 0;
 735 }
 736
 737 static int btmrvl_sdio_read_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
 738 {
 739         struct btmrvl_adapter *adapter = card->priv->adapter;
 740         int ret;
 741
 742         ret = sdio_readsb(card->func, adapter->hw_regs, 0, SDIO_BLOCK_SIZE);
 743         if (ret) {
 744                 BT_ERR("sdio_readsb: read int hw_regs failed: %d", ret);
 745                 return ret;
 746         }
 747
 748         *ireg = adapter->hw_regs[card->reg->host_intstatus];
 749         BT_DBG("hw_regs[%#x]=%#x", card->reg->host_intstatus, *ireg);
 750
 751         return 0;
 752 }
 753
 754 static int btmrvl_sdio_write_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
 755 {
 756         int ret;
 757
 758         *ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret);
 759         if (ret) {
 760                 BT_ERR("sdio_readb: read int status failed: %d", ret);
 761                 return ret;
 762         }
 763
 764         if (*ireg) {
 765                 /*
 766                  * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
 767                  * Clear the interrupt status register and re-enable the
 768                  * interrupt.
 769                  */
 770                 BT_DBG("int_status = 0x%x", *ireg);
 771
 772                 sdio_writeb(card->func, ~(*ireg) & (DN_LD_HOST_INT_STATUS |
 773                                                     UP_LD_HOST_INT_STATUS),
 774                             card->reg->host_intstatus, &ret);
 775                 if (ret) {
 776                         BT_ERR("sdio_writeb: clear int status failed: %d", ret);
 777                         return ret;
 778                 }
 779         }
 780
 781         return 0;
 782 }
 783
 784 static void btmrvl_sdio_interrupt(struct sdio_func *func)
 785 {
 786         struct btmrvl_private *priv;
 787         struct btmrvl_sdio_card *card;
 788         ulong flags;
 789         u8 ireg = 0;
 790         int ret;
 791
 792         card = sdio_get_drvdata(func);
 793         if (!card || !card->priv) {
 794                 BT_ERR("sbi_interrupt(%p) card or priv is NULL, card=%p",
 795                        func, card);
 796                 return;
 797         }
 798
 799         priv = card->priv;
 800
 801         if (card->reg->int_read_to_clear)
 802                 ret = btmrvl_sdio_read_to_clear(card, &ireg);
 803         else
 804                 ret = btmrvl_sdio_write_to_clear(card, &ireg);
 805
 806         if (ret)
 807                 return;
 808
 809         spin_lock_irqsave(&priv->driver_lock, flags);
 810         sdio_ireg |= ireg;
 811         spin_unlock_irqrestore(&priv->driver_lock, flags);
 812
 813         btmrvl_interrupt(priv);
 814 }
 815
 816 static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
 817 {
 818         struct sdio_func *func;
 819         u8 reg;
 820         int ret = 0;
 821
 822         if (!card || !card->func) {
 823                 BT_ERR("Error: card or function is NULL!");
 824                 ret = -EINVAL;
 825                 goto failed;
 826         }
 827
 828         func = card->func;
 829
 830         sdio_claim_host(func);
 831
 832         ret = sdio_enable_func(func);
 833         if (ret) {
 834                 BT_ERR("sdio_enable_func() failed: ret=%d", ret);
 835                 ret = -EIO;
 836                 goto release_host;
 837         }
 838
 839         ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
 840         if (ret) {
 841                 BT_ERR("sdio_claim_irq failed: ret=%d", ret);
 842                 ret = -EIO;
 843                 goto disable_func;
 844         }
 845
 846         ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
 847         if (ret) {
 848                 BT_ERR("cannot set SDIO block size");
 849                 ret = -EIO;
 850                 goto release_irq;
 851         }
 852
 853         reg = sdio_readb(func, card->reg->io_port_0, &ret);
 854         if (ret < 0) {
 855                 ret = -EIO;
 856                 goto release_irq;
 857         }
 858
 859         card->ioport = reg;
 860
 861         reg = sdio_readb(func, card->reg->io_port_1, &ret);
 862         if (ret < 0) {
 863                 ret = -EIO;
 864                 goto release_irq;
 865         }
 866
 867         card->ioport |= (reg << 8);
 868
 869         reg = sdio_readb(func, card->reg->io_port_2, &ret);
 870         if (ret < 0) {
 871                 ret = -EIO;
 872                 goto release_irq;
 873         }
 874
 875         card->ioport |= (reg << 16);
 876
 877         BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
 878
 879         if (card->reg->int_read_to_clear) {
 880                 reg = sdio_readb(func, card->reg->host_int_rsr, &ret);
 881                 if (ret < 0) {
 882                         ret = -EIO;
 883                         goto release_irq;
 884                 }
 885                 sdio_writeb(func, reg | 0x3f, card->reg->host_int_rsr, &ret);
 886                 if (ret < 0) {
 887                         ret = -EIO;
 888                         goto release_irq;
 889                 }
 890
 891                 reg = sdio_readb(func, card->reg->card_misc_cfg, &ret);
 892                 if (ret < 0) {
 893                         ret = -EIO;
 894                         goto release_irq;
 895                 }
 896                 sdio_writeb(func, reg | 0x10, card->reg->card_misc_cfg, &ret);
 897                 if (ret < 0) {
 898                         ret = -EIO;
 899                         goto release_irq;
 900                 }
 901         }
 902
 903         sdio_set_drvdata(func, card);
 904
 905         sdio_release_host(func);
 906
 907         return 0;
 908
 909 release_irq:
 910         sdio_release_irq(func);
 911
 912 disable_func:
 913         sdio_disable_func(func);
 914
 915 release_host:
 916         sdio_release_host(func);
 917
 918 failed:
 919         return ret;
 920 }
 921
 922 static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
 923 {
 924         if (card && card->func) {
 925                 sdio_claim_host(card->func);
 926                 sdio_release_irq(card->func);
 927                 sdio_disable_func(card->func);
 928                 sdio_release_host(card->func);
 929                 sdio_set_drvdata(card->func, NULL);
 930         }
 931
 932         return 0;
 933 }
 934
 935 static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
 936 {
 937         int ret;
 938
 939         if (!card || !card->func)
 940                 return -EINVAL;
 941
 942         sdio_claim_host(card->func);
 943
 944         ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
 945
 946         btmrvl_sdio_get_rx_unit(card);
 947
 948         sdio_release_host(card->func);
 949
 950         return ret;
 951 }
 952
 953 static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
 954 {
 955         int ret;
 956
 957         if (!card || !card->func)
 958                 return -EINVAL;
 959
 960         sdio_claim_host(card->func);
 961
 962         ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
 963
 964         sdio_release_host(card->func);
 965
 966         return ret;
 967 }
 968
 969 static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
 970                                 u8 *payload, u16 nb)
 971 {
 972         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
 973         int ret = 0;
 974         int buf_block_len;
 975         int blksz;
 976         int i = 0;
 977         u8 *buf = NULL;
 978         void *tmpbuf = NULL;
 979         int tmpbufsz;
 980
 981         if (!card || !card->func) {
 982                 BT_ERR("card or function is NULL!");
 983                 return -EINVAL;
 984         }
 985
 986         buf = payload;
 987         if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) {
 988                 tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
 989                 tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
 990                 if (!tmpbuf)
 991                         return -ENOMEM;
 992                 buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
 993                 memcpy(buf, payload, nb);
 994         }
 995
 996         blksz = SDIO_BLOCK_SIZE;
 997         buf_block_len = DIV_ROUND_UP(nb, blksz);
 998
 999         sdio_claim_host(card->func);
1000
1001         do {
1002                 /* Transfer data to card */
1003                 ret = sdio_writesb(card->func, card->ioport, buf,
1004                                    buf_block_len * blksz);
1005                 if (ret < 0) {
1006                         i++;
1007                         BT_ERR("i=%d writesb failed: %d", i, ret);
1008                         BT_ERR("hex: %*ph", nb, payload);
1009                         ret = -EIO;
1010                         if (i > MAX_WRITE_IOMEM_RETRY)
1011                                 goto exit;
1012                 }
1013         } while (ret);
1014
1015         priv->btmrvl_dev.tx_dnld_rdy = false;
1016
1017 exit:
1018         sdio_release_host(card->func);
1019         kfree(tmpbuf);
1020
1021         return ret;
1022 }
1023
1024 static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
1025 {
1026         int ret;
1027         u8 fws0;
1028         int pollnum = MAX_POLL_TRIES;
1029
1030         if (!card || !card->func) {
1031                 BT_ERR("card or function is NULL!");
1032                 return -EINVAL;
1033         }
1034
1035         if (!btmrvl_sdio_verify_fw_download(card, 1)) {
1036                 BT_DBG("Firmware already downloaded!");
1037                 return 0;
1038         }
1039
1040         sdio_claim_host(card->func);
1041
1042         /* Check if other function driver is downloading the firmware */
1043         fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
1044         if (ret) {
1045                 BT_ERR("Failed to read FW downloading status!");
1046                 ret = -EIO;
1047                 goto done;
1048         }
1049         if (fws0) {
1050                 BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0);
1051
1052                 /* Give other function more time to download the firmware */
1053                 pollnum *= 10;
1054         } else {
1055                 if (card->helper) {
1056                         ret = btmrvl_sdio_download_helper(card);
1057                         if (ret) {
1058                                 BT_ERR("Failed to download helper!");
1059                                 ret = -EIO;
1060                                 goto done;
1061                         }
1062                 }
1063
1064                 if (btmrvl_sdio_download_fw_w_helper(card)) {
1065                         BT_ERR("Failed to download firmware!");
1066                         ret = -EIO;
1067                         goto done;
1068                 }
1069         }
1070
1071         sdio_release_host(card->func);
1072
1073         /*
1074          * winner or not, with this test the FW synchronizes when the
1075          * module can continue its initialization
1076          */
1077         if (btmrvl_sdio_verify_fw_download(card, pollnum)) {
1078                 BT_ERR("FW failed to be active in time!");
1079                 return -ETIMEDOUT;
1080         }
1081
1082         return 0;
1083
1084 done:
1085         sdio_release_host(card->func);
1086         return ret;
1087 }
1088
1089 static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
1090 {
1091         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1092         int ret = 0;
1093
1094         if (!card || !card->func) {
1095                 BT_ERR("card or function is NULL!");
1096                 return -EINVAL;
1097         }
1098
1099         sdio_claim_host(card->func);
1100
1101         sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret);
1102
1103         sdio_release_host(card->func);
1104
1105         BT_DBG("wake up firmware");
1106
1107         return ret;
1108 }
1109
1110 static void btmrvl_sdio_dump_regs(struct btmrvl_private *priv)
1111 {
1112         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1113         int ret = 0;
1114         unsigned int reg, reg_start, reg_end;
1115         char buf[256], *ptr;
1116         u8 loop, func, data;
1117         int MAX_LOOP = 2;
1118
1119         btmrvl_sdio_wakeup_fw(priv);
1120         sdio_claim_host(card->func);
1121
1122         for (loop = 0; loop < MAX_LOOP; loop++) {
1123                 memset(buf, 0, sizeof(buf));
1124                 ptr = buf;
1125
1126                 if (loop == 0) {
1127                         /* Read the registers of SDIO function0 */
1128                         func = loop;
1129                         reg_start = 0;
1130                         reg_end = 9;
1131                 } else {
1132                         func = 2;
1133                         reg_start = 0;
1134                         reg_end = 0x09;
1135                 }
1136
1137                 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
1138                                func, reg_start, reg_end);
1139                 for (reg = reg_start; reg <= reg_end; reg++) {
1140                         if (func == 0)
1141                                 data = sdio_f0_readb(card->func, reg, &ret);
1142                         else
1143                                 data = sdio_readb(card->func, reg, &ret);
1144
1145                         if (!ret) {
1146                                 ptr += sprintf(ptr, "%02x ", data);
1147                         } else {
1148                                 ptr += sprintf(ptr, "ERR");
1149                                 break;
1150                         }
1151                 }
1152
1153                 BT_INFO("%s", buf);
1154         }
1155
1156         sdio_release_host(card->func);
1157 }
1158
1159 /* This function read/write firmware */
1160 static enum
1161 rdwr_status btmrvl_sdio_rdwr_firmware(struct btmrvl_private *priv,
1162                                       u8 doneflag)
1163 {
1164         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1165         int ret, tries;
1166         u8 ctrl_data = 0;
1167
1168         sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl,
1169                     &ret);
1170
1171         if (ret) {
1172                 BT_ERR("SDIO write err");
1173                 return RDWR_STATUS_FAILURE;
1174         }
1175
1176         for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
1177                 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
1178                                        &ret);
1179
1180                 if (ret) {
1181                         BT_ERR("SDIO read err");
1182                         return RDWR_STATUS_FAILURE;
1183                 }
1184
1185                 if (ctrl_data == FW_DUMP_DONE)
1186                         break;
1187                 if (doneflag && ctrl_data == doneflag)
1188                         return RDWR_STATUS_DONE;
1189                 if (ctrl_data != FW_DUMP_HOST_READY) {
1190                         BT_INFO("The ctrl reg was changed, re-try again!");
1191                         sdio_writeb(card->func, FW_DUMP_HOST_READY,
1192                                     card->reg->fw_dump_ctrl, &ret);
1193                         if (ret) {
1194                                 BT_ERR("SDIO write err");
1195                                 return RDWR_STATUS_FAILURE;
1196                         }
1197                 }
1198                 usleep_range(100, 200);
1199         }
1200
1201         if (ctrl_data == FW_DUMP_HOST_READY) {
1202                 BT_ERR("Fail to pull ctrl_data");
1203                 return RDWR_STATUS_FAILURE;
1204         }
1205
1206         return RDWR_STATUS_SUCCESS;
1207 }
1208
1209 /* This function dump sdio register and memory data */
1210 static void btmrvl_sdio_dump_firmware(struct btmrvl_private *priv)
1211 {
1212         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1213         int ret = 0;
1214         unsigned int reg, reg_start, reg_end;
1215         enum rdwr_status stat;
1216         u8 *dbg_ptr, *end_ptr, *fw_dump_data, *fw_dump_ptr;
1217         u8 dump_num, idx, i, read_reg, doneflag = 0;
1218         u32 memory_size, fw_dump_len = 0;
1219
1220         /* dump sdio register first */
1221         btmrvl_sdio_dump_regs(priv);
1222
1223         if (!card->supports_fw_dump) {
1224                 BT_ERR("Firmware dump not supported for this card!");
1225                 return;
1226         }
1227
1228         for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
1229                 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1230
1231                 if (entry->mem_ptr) {
1232                         vfree(entry->mem_ptr);
1233                         entry->mem_ptr = NULL;
1234                 }
1235                 entry->mem_size = 0;
1236         }
1237
1238         btmrvl_sdio_wakeup_fw(priv);
1239         sdio_claim_host(card->func);
1240
1241         BT_INFO("== btmrvl firmware dump start ==");
1242
1243         stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1244         if (stat == RDWR_STATUS_FAILURE)
1245                 goto done;
1246
1247         reg = card->reg->fw_dump_start;
1248         /* Read the number of the memories which will dump */
1249         dump_num = sdio_readb(card->func, reg, &ret);
1250
1251         if (ret) {
1252                 BT_ERR("SDIO read memory length err");
1253                 goto done;
1254         }
1255
1256         /* Read the length of every memory which will dump */
1257         for (idx = 0; idx < dump_num; idx++) {
1258                 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1259
1260                 stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1261                 if (stat == RDWR_STATUS_FAILURE)
1262                         goto done;
1263
1264                 memory_size = 0;
1265                 reg = card->reg->fw_dump_start;
1266                 for (i = 0; i < 4; i++) {
1267                         read_reg = sdio_readb(card->func, reg, &ret);
1268                         if (ret) {
1269                                 BT_ERR("SDIO read err");
1270                                 goto done;
1271                         }
1272                         memory_size |= (read_reg << i*8);
1273                         reg++;
1274                 }
1275
1276                 if (memory_size == 0) {
1277                         BT_INFO("Firmware dump finished!");
1278                         break;
1279                 }
1280
1281                 BT_INFO("%s_SIZE=0x%x", entry->mem_name, memory_size);
1282                 entry->mem_ptr = vzalloc(memory_size + 1);
1283                 entry->mem_size = memory_size;
1284                 if (!entry->mem_ptr) {
1285                         BT_ERR("Vzalloc %s failed", entry->mem_name);
1286                         goto done;
1287                 }
1288
1289                 fw_dump_len += (strlen("========Start dump ") +
1290                                 strlen(entry->mem_name) +
1291                                 strlen("========\n") +
1292                                 (memory_size + 1) +
1293                                 strlen("\n========End dump========\n"));
1294
1295                 dbg_ptr = entry->mem_ptr;
1296                 end_ptr = dbg_ptr + memory_size;
1297
1298                 doneflag = entry->done_flag;
1299                 BT_INFO("Start %s output, please wait...",
1300                         entry->mem_name);
1301
1302                 do {
1303                         stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1304                         if (stat == RDWR_STATUS_FAILURE)
1305                                 goto done;
1306
1307                         reg_start = card->reg->fw_dump_start;
1308                         reg_end = card->reg->fw_dump_end;
1309                         for (reg = reg_start; reg <= reg_end; reg++) {
1310                                 *dbg_ptr = sdio_readb(card->func, reg, &ret);
1311                                 if (ret) {
1312                                         BT_ERR("SDIO read err");
1313                                         goto done;
1314                                 }
1315                                 if (dbg_ptr < end_ptr)
1316                                         dbg_ptr++;
1317                                 else
1318                                         BT_ERR("Allocated buffer not enough");
1319                         }
1320
1321                         if (stat != RDWR_STATUS_DONE) {
1322                                 continue;
1323                         } else {
1324                                 BT_INFO("%s done: size=0x%tx",
1325                                         entry->mem_name,
1326                                         dbg_ptr - entry->mem_ptr);
1327                                 break;
1328                         }
1329                 } while (1);
1330         }
1331
1332         BT_INFO("== btmrvl firmware dump end ==");
1333
1334 done:
1335         sdio_release_host(card->func);
1336
1337         if (fw_dump_len == 0)
1338                 return;
1339
1340         fw_dump_data = vzalloc(fw_dump_len+1);
1341         if (!fw_dump_data) {
1342                 BT_ERR("Vzalloc fw_dump_data fail!");
1343                 return;
1344         }
1345         fw_dump_ptr = fw_dump_data;
1346
1347         /* Dump all the memory data into single file, a userspace script will
1348            be used to split all the memory data to multiple files*/
1349         BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump start");
1350         for (idx = 0; idx < dump_num; idx++) {
1351                 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1352
1353                 if (entry->mem_ptr) {
1354                         strcpy(fw_dump_ptr, "========Start dump ");
1355                         fw_dump_ptr += strlen("========Start dump ");
1356
1357                         strcpy(fw_dump_ptr, entry->mem_name);
1358                         fw_dump_ptr += strlen(entry->mem_name);
1359
1360                         strcpy(fw_dump_ptr, "========\n");
1361                         fw_dump_ptr += strlen("========\n");
1362
1363                         memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1364                         fw_dump_ptr += entry->mem_size;
1365
1366                         strcpy(fw_dump_ptr, "\n========End dump========\n");
1367                         fw_dump_ptr += strlen("\n========End dump========\n");
1368
1369                         vfree(mem_type_mapping_tbl[idx].mem_ptr);
1370                         mem_type_mapping_tbl[idx].mem_ptr = NULL;
1371                 }
1372         }
1373
1374         /* fw_dump_data will be free in device coredump release function
1375            after 5 min*/
1376         dev_coredumpv(&priv->btmrvl_dev.hcidev->dev, fw_dump_data,
1377                       fw_dump_len, GFP_KERNEL);
1378         BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump end");
1379 }
1380
1381 static int btmrvl_sdio_probe(struct sdio_func *func,
1382                                         const struct sdio_device_id *id)
1383 {
1384         int ret = 0;
1385         struct btmrvl_private *priv = NULL;
1386         struct btmrvl_sdio_card *card = NULL;
1387
1388         BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
1389                         id->vendor, id->device, id->class, func->num);
1390
1391         card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
1392         if (!card)
1393                 return -ENOMEM;
1394
1395         card->func = func;
1396
1397         if (id->driver_data) {
1398                 struct btmrvl_sdio_device *data = (void *) id->driver_data;
1399                 card->helper = data->helper;
1400                 card->firmware = data->firmware;
1401                 card->reg = data->reg;
1402                 card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
1403                 card->support_pscan_win_report = data->support_pscan_win_report;
1404                 card->supports_fw_dump = data->supports_fw_dump;
1405         }
1406
1407         if (btmrvl_sdio_register_dev(card) < 0) {
1408                 BT_ERR("Failed to register BT device!");
1409                 return -ENODEV;
1410         }
1411
1412         /* Disable the interrupts on the card */
1413         btmrvl_sdio_disable_host_int(card);
1414
1415         if (btmrvl_sdio_download_fw(card)) {
1416                 BT_ERR("Downloading firmware failed!");
1417                 ret = -ENODEV;
1418                 goto unreg_dev;
1419         }
1420
1421         btmrvl_sdio_enable_host_int(card);
1422
1423         priv = btmrvl_add_card(card);
1424         if (!priv) {
1425                 BT_ERR("Initializing card failed!");
1426                 ret = -ENODEV;
1427                 goto disable_host_int;
1428         }
1429
1430         card->priv = priv;
1431
1432         /* Initialize the interface specific function pointers */
1433         priv->hw_host_to_card = btmrvl_sdio_host_to_card;
1434         priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
1435         priv->hw_process_int_status = btmrvl_sdio_process_int_status;
1436         priv->firmware_dump = btmrvl_sdio_dump_firmware;
1437
1438         if (btmrvl_register_hdev(priv)) {
1439                 BT_ERR("Register hdev failed!");
1440                 ret = -ENODEV;
1441                 goto disable_host_int;
1442         }
1443
1444         return 0;
1445
1446 disable_host_int:
1447         btmrvl_sdio_disable_host_int(card);
1448 unreg_dev:
1449         btmrvl_sdio_unregister_dev(card);
1450         return ret;
1451 }
1452
1453 static void btmrvl_sdio_remove(struct sdio_func *func)
1454 {
1455         struct btmrvl_sdio_card *card;
1456
1457         if (func) {
1458                 card = sdio_get_drvdata(func);
1459                 if (card) {
1460                         /* Send SHUTDOWN command & disable interrupt
1461                          * if user removes the module.
1462                          */
1463                         if (user_rmmod) {
1464                                 btmrvl_send_module_cfg_cmd(card->priv,
1465                                                         MODULE_SHUTDOWN_REQ);
1466                                 btmrvl_sdio_disable_host_int(card);
1467                         }
1468                         BT_DBG("unregester dev");
1469                         btmrvl_sdio_unregister_dev(card);
1470                         btmrvl_remove_card(card->priv);
1471                 }
1472         }
1473 }
1474
1475 static int btmrvl_sdio_suspend(struct device *dev)
1476 {
1477         struct sdio_func *func = dev_to_sdio_func(dev);
1478         struct btmrvl_sdio_card *card;
1479         struct btmrvl_private *priv;
1480         mmc_pm_flag_t pm_flags;
1481         struct hci_dev *hcidev;
1482
1483         if (func) {
1484                 pm_flags = sdio_get_host_pm_caps(func);
1485                 BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func),
1486                        pm_flags);
1487                 if (!(pm_flags & MMC_PM_KEEP_POWER)) {
1488                         BT_ERR("%s: cannot remain alive while suspended",
1489                                sdio_func_id(func));
1490                         return -ENOSYS;
1491                 }
1492                 card = sdio_get_drvdata(func);
1493                 if (!card || !card->priv) {
1494                         BT_ERR("card or priv structure is not valid");
1495                         return 0;
1496                 }
1497         } else {
1498                 BT_ERR("sdio_func is not specified");
1499                 return 0;
1500         }
1501
1502         priv = card->priv;
1503         hcidev = priv->btmrvl_dev.hcidev;
1504         BT_DBG("%s: SDIO suspend", hcidev->name);
1505         hci_suspend_dev(hcidev);
1506         skb_queue_purge(&priv->adapter->tx_queue);
1507
1508         if (priv->adapter->hs_state != HS_ACTIVATED) {
1509                 if (btmrvl_enable_hs(priv)) {
1510                         BT_ERR("HS not actived, suspend failed!");
1511                         return -EBUSY;
1512                 }
1513         }
1514
1515         priv->adapter->is_suspended = true;
1516
1517         /* We will keep the power when hs enabled successfully */
1518         if (priv->adapter->hs_state == HS_ACTIVATED) {
1519                 BT_DBG("suspend with MMC_PM_KEEP_POWER");
1520                 return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1521         } else {
1522                 BT_DBG("suspend without MMC_PM_KEEP_POWER");
1523                 return 0;
1524         }
1525 }
1526
1527 static int btmrvl_sdio_resume(struct device *dev)
1528 {
1529         struct sdio_func *func = dev_to_sdio_func(dev);
1530         struct btmrvl_sdio_card *card;
1531         struct btmrvl_private *priv;
1532         mmc_pm_flag_t pm_flags;
1533         struct hci_dev *hcidev;
1534
1535         if (func) {
1536                 pm_flags = sdio_get_host_pm_caps(func);
1537                 BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func),
1538                        pm_flags);
1539                 card = sdio_get_drvdata(func);
1540                 if (!card || !card->priv) {
1541                         BT_ERR("card or priv structure is not valid");
1542                         return 0;
1543                 }
1544         } else {
1545                 BT_ERR("sdio_func is not specified");
1546                 return 0;
1547         }
1548         priv = card->priv;
1549
1550         if (!priv->adapter->is_suspended) {
1551                 BT_DBG("device already resumed");
1552                 return 0;
1553         }
1554
1555         priv->hw_wakeup_firmware(priv);
1556         priv->adapter->hs_state = HS_DEACTIVATED;
1557         hcidev = priv->btmrvl_dev.hcidev;
1558         BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name);
1559         priv->adapter->is_suspended = false;
1560         BT_DBG("%s: SDIO resume", hcidev->name);
1561         hci_resume_dev(hcidev);
1562
1563         return 0;
1564 }
1565
1566 static const struct dev_pm_ops btmrvl_sdio_pm_ops = {
1567         .suspend        = btmrvl_sdio_suspend,
1568         .resume         = btmrvl_sdio_resume,
1569 };
1570
1571 static struct sdio_driver bt_mrvl_sdio = {
1572         .name           = "btmrvl_sdio",
1573         .id_table       = btmrvl_sdio_ids,
1574         .probe          = btmrvl_sdio_probe,
1575         .remove         = btmrvl_sdio_remove,
1576         .drv = {
1577                 .owner = THIS_MODULE,
1578                 .pm = &btmrvl_sdio_pm_ops,
1579         }
1580 };
1581
1582 static int __init btmrvl_sdio_init_module(void)
1583 {
1584         if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
1585                 BT_ERR("SDIO Driver Registration Failed");
1586                 return -ENODEV;
1587         }
1588
1589         /* Clear the flag in case user removes the card. */
1590         user_rmmod = 0;
1591
1592         return 0;
1593 }
1594
1595 static void __exit btmrvl_sdio_exit_module(void)
1596 {
1597         /* Set the flag as user is removing this module. */
1598         user_rmmod = 1;
1599
1600         sdio_unregister_driver(&bt_mrvl_sdio);
1601 }
1602
1603 module_init(btmrvl_sdio_init_module);
1604 module_exit(btmrvl_sdio_exit_module);
1605
1606 MODULE_AUTHOR("Marvell International Ltd.");
1607 MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
1608 MODULE_VERSION(VERSION);
1609 MODULE_LICENSE("GPL v2");
1610 MODULE_FIRMWARE("mrvl/sd8688_helper.bin");
1611 MODULE_FIRMWARE("mrvl/sd8688.bin");
1612 MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
1613 MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");
1614 MODULE_FIRMWARE("mrvl/sd8887_uapsta.bin");
1615 MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin");