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_INFO("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 (priv->surprise_removed)
 802                 return;
 803
 804         if (card->reg->int_read_to_clear)
 805                 ret = btmrvl_sdio_read_to_clear(card, &ireg);
 806         else
 807                 ret = btmrvl_sdio_write_to_clear(card, &ireg);
 808
 809         if (ret)
 810                 return;
 811
 812         spin_lock_irqsave(&priv->driver_lock, flags);
 813         sdio_ireg |= ireg;
 814         spin_unlock_irqrestore(&priv->driver_lock, flags);
 815
 816         btmrvl_interrupt(priv);
 817 }
 818
 819 static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
 820 {
 821         struct sdio_func *func;
 822         u8 reg;
 823         int ret = 0;
 824
 825         if (!card || !card->func) {
 826                 BT_ERR("Error: card or function is NULL!");
 827                 ret = -EINVAL;
 828                 goto failed;
 829         }
 830
 831         func = card->func;
 832
 833         sdio_claim_host(func);
 834
 835         ret = sdio_enable_func(func);
 836         if (ret) {
 837                 BT_ERR("sdio_enable_func() failed: ret=%d", ret);
 838                 ret = -EIO;
 839                 goto release_host;
 840         }
 841
 842         ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
 843         if (ret) {
 844                 BT_ERR("sdio_claim_irq failed: ret=%d", ret);
 845                 ret = -EIO;
 846                 goto disable_func;
 847         }
 848
 849         ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
 850         if (ret) {
 851                 BT_ERR("cannot set SDIO block size");
 852                 ret = -EIO;
 853                 goto release_irq;
 854         }
 855
 856         reg = sdio_readb(func, card->reg->io_port_0, &ret);
 857         if (ret < 0) {
 858                 ret = -EIO;
 859                 goto release_irq;
 860         }
 861
 862         card->ioport = reg;
 863
 864         reg = sdio_readb(func, card->reg->io_port_1, &ret);
 865         if (ret < 0) {
 866                 ret = -EIO;
 867                 goto release_irq;
 868         }
 869
 870         card->ioport |= (reg << 8);
 871
 872         reg = sdio_readb(func, card->reg->io_port_2, &ret);
 873         if (ret < 0) {
 874                 ret = -EIO;
 875                 goto release_irq;
 876         }
 877
 878         card->ioport |= (reg << 16);
 879
 880         BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
 881
 882         if (card->reg->int_read_to_clear) {
 883                 reg = sdio_readb(func, card->reg->host_int_rsr, &ret);
 884                 if (ret < 0) {
 885                         ret = -EIO;
 886                         goto release_irq;
 887                 }
 888                 sdio_writeb(func, reg | 0x3f, card->reg->host_int_rsr, &ret);
 889                 if (ret < 0) {
 890                         ret = -EIO;
 891                         goto release_irq;
 892                 }
 893
 894                 reg = sdio_readb(func, card->reg->card_misc_cfg, &ret);
 895                 if (ret < 0) {
 896                         ret = -EIO;
 897                         goto release_irq;
 898                 }
 899                 sdio_writeb(func, reg | 0x10, card->reg->card_misc_cfg, &ret);
 900                 if (ret < 0) {
 901                         ret = -EIO;
 902                         goto release_irq;
 903                 }
 904         }
 905
 906         sdio_set_drvdata(func, card);
 907
 908         sdio_release_host(func);
 909
 910         return 0;
 911
 912 release_irq:
 913         sdio_release_irq(func);
 914
 915 disable_func:
 916         sdio_disable_func(func);
 917
 918 release_host:
 919         sdio_release_host(func);
 920
 921 failed:
 922         return ret;
 923 }
 924
 925 static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
 926 {
 927         if (card && card->func) {
 928                 sdio_claim_host(card->func);
 929                 sdio_release_irq(card->func);
 930                 sdio_disable_func(card->func);
 931                 sdio_release_host(card->func);
 932                 sdio_set_drvdata(card->func, NULL);
 933         }
 934
 935         return 0;
 936 }
 937
 938 static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
 939 {
 940         int ret;
 941
 942         if (!card || !card->func)
 943                 return -EINVAL;
 944
 945         sdio_claim_host(card->func);
 946
 947         ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
 948
 949         btmrvl_sdio_get_rx_unit(card);
 950
 951         sdio_release_host(card->func);
 952
 953         return ret;
 954 }
 955
 956 static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
 957 {
 958         int ret;
 959
 960         if (!card || !card->func)
 961                 return -EINVAL;
 962
 963         sdio_claim_host(card->func);
 964
 965         ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
 966
 967         sdio_release_host(card->func);
 968
 969         return ret;
 970 }
 971
 972 static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
 973                                 u8 *payload, u16 nb)
 974 {
 975         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
 976         int ret = 0;
 977         int buf_block_len;
 978         int blksz;
 979         int i = 0;
 980         u8 *buf = NULL;
 981         void *tmpbuf = NULL;
 982         int tmpbufsz;
 983
 984         if (!card || !card->func) {
 985                 BT_ERR("card or function is NULL!");
 986                 return -EINVAL;
 987         }
 988
 989         buf = payload;
 990         if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) {
 991                 tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
 992                 tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
 993                 if (!tmpbuf)
 994                         return -ENOMEM;
 995                 buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
 996                 memcpy(buf, payload, nb);
 997         }
 998
 999         blksz = SDIO_BLOCK_SIZE;
1000         buf_block_len = DIV_ROUND_UP(nb, blksz);
1001
1002         sdio_claim_host(card->func);
1003
1004         do {
1005                 /* Transfer data to card */
1006                 ret = sdio_writesb(card->func, card->ioport, buf,
1007                                    buf_block_len * blksz);
1008                 if (ret < 0) {
1009                         i++;
1010                         BT_ERR("i=%d writesb failed: %d", i, ret);
1011                         BT_ERR("hex: %*ph", nb, payload);
1012                         ret = -EIO;
1013                         if (i > MAX_WRITE_IOMEM_RETRY)
1014                                 goto exit;
1015                 }
1016         } while (ret);
1017
1018         priv->btmrvl_dev.tx_dnld_rdy = false;
1019
1020 exit:
1021         sdio_release_host(card->func);
1022         kfree(tmpbuf);
1023
1024         return ret;
1025 }
1026
1027 static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
1028 {
1029         int ret;
1030         u8 fws0;
1031         int pollnum = MAX_POLL_TRIES;
1032
1033         if (!card || !card->func) {
1034                 BT_ERR("card or function is NULL!");
1035                 return -EINVAL;
1036         }
1037
1038         if (!btmrvl_sdio_verify_fw_download(card, 1)) {
1039                 BT_DBG("Firmware already downloaded!");
1040                 return 0;
1041         }
1042
1043         sdio_claim_host(card->func);
1044
1045         /* Check if other function driver is downloading the firmware */
1046         fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
1047         if (ret) {
1048                 BT_ERR("Failed to read FW downloading status!");
1049                 ret = -EIO;
1050                 goto done;
1051         }
1052         if (fws0) {
1053                 BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0);
1054
1055                 /* Give other function more time to download the firmware */
1056                 pollnum *= 10;
1057         } else {
1058                 if (card->helper) {
1059                         ret = btmrvl_sdio_download_helper(card);
1060                         if (ret) {
1061                                 BT_ERR("Failed to download helper!");
1062                                 ret = -EIO;
1063                                 goto done;
1064                         }
1065                 }
1066
1067                 if (btmrvl_sdio_download_fw_w_helper(card)) {
1068                         BT_ERR("Failed to download firmware!");
1069                         ret = -EIO;
1070                         goto done;
1071                 }
1072         }
1073
1074         /*
1075          * winner or not, with this test the FW synchronizes when the
1076          * module can continue its initialization
1077          */
1078         if (btmrvl_sdio_verify_fw_download(card, pollnum)) {
1079                 BT_ERR("FW failed to be active in time!");
1080                 return -ETIMEDOUT;
1081         }
1082
1083         sdio_release_host(card->func);
1084
1085         return 0;
1086
1087 done:
1088         sdio_release_host(card->func);
1089         return ret;
1090 }
1091
1092 static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
1093 {
1094         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1095         int ret = 0;
1096
1097         if (!card || !card->func) {
1098                 BT_ERR("card or function is NULL!");
1099                 return -EINVAL;
1100         }
1101
1102         sdio_claim_host(card->func);
1103
1104         sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret);
1105
1106         sdio_release_host(card->func);
1107
1108         BT_DBG("wake up firmware");
1109
1110         return ret;
1111 }
1112
1113 static void btmrvl_sdio_dump_regs(struct btmrvl_private *priv)
1114 {
1115         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1116         int ret = 0;
1117         unsigned int reg, reg_start, reg_end;
1118         char buf[256], *ptr;
1119         u8 loop, func, data;
1120         int MAX_LOOP = 2;
1121
1122         btmrvl_sdio_wakeup_fw(priv);
1123         sdio_claim_host(card->func);
1124
1125         for (loop = 0; loop < MAX_LOOP; loop++) {
1126                 memset(buf, 0, sizeof(buf));
1127                 ptr = buf;
1128
1129                 if (loop == 0) {
1130                         /* Read the registers of SDIO function0 */
1131                         func = loop;
1132                         reg_start = 0;
1133                         reg_end = 9;
1134                 } else {
1135                         func = 2;
1136                         reg_start = 0;
1137                         reg_end = 0x09;
1138                 }
1139
1140                 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
1141                                func, reg_start, reg_end);
1142                 for (reg = reg_start; reg <= reg_end; reg++) {
1143                         if (func == 0)
1144                                 data = sdio_f0_readb(card->func, reg, &ret);
1145                         else
1146                                 data = sdio_readb(card->func, reg, &ret);
1147
1148                         if (!ret) {
1149                                 ptr += sprintf(ptr, "%02x ", data);
1150                         } else {
1151                                 ptr += sprintf(ptr, "ERR");
1152                                 break;
1153                         }
1154                 }
1155
1156                 BT_INFO("%s", buf);
1157         }
1158
1159         sdio_release_host(card->func);
1160 }
1161
1162 /* This function read/write firmware */
1163 static enum
1164 rdwr_status btmrvl_sdio_rdwr_firmware(struct btmrvl_private *priv,
1165                                       u8 doneflag)
1166 {
1167         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1168         int ret, tries;
1169         u8 ctrl_data = 0;
1170
1171         sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl,
1172                     &ret);
1173
1174         if (ret) {
1175                 BT_ERR("SDIO write err");
1176                 return RDWR_STATUS_FAILURE;
1177         }
1178
1179         for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
1180                 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
1181                                        &ret);
1182
1183                 if (ret) {
1184                         BT_ERR("SDIO read err");
1185                         return RDWR_STATUS_FAILURE;
1186                 }
1187
1188                 if (ctrl_data == FW_DUMP_DONE)
1189                         break;
1190                 if (doneflag && ctrl_data == doneflag)
1191                         return RDWR_STATUS_DONE;
1192                 if (ctrl_data != FW_DUMP_HOST_READY) {
1193                         BT_INFO("The ctrl reg was changed, re-try again!");
1194                         sdio_writeb(card->func, FW_DUMP_HOST_READY,
1195                                     card->reg->fw_dump_ctrl, &ret);
1196                         if (ret) {
1197                                 BT_ERR("SDIO write err");
1198                                 return RDWR_STATUS_FAILURE;
1199                         }
1200                 }
1201                 usleep_range(100, 200);
1202         }
1203
1204         if (ctrl_data == FW_DUMP_HOST_READY) {
1205                 BT_ERR("Fail to pull ctrl_data");
1206                 return RDWR_STATUS_FAILURE;
1207         }
1208
1209         return RDWR_STATUS_SUCCESS;
1210 }
1211
1212 /* This function dump sdio register and memory data */
1213 static void btmrvl_sdio_dump_firmware(struct btmrvl_private *priv)
1214 {
1215         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1216         int ret = 0;
1217         unsigned int reg, reg_start, reg_end;
1218         enum rdwr_status stat;
1219         u8 *dbg_ptr, *end_ptr, *fw_dump_data, *fw_dump_ptr;
1220         u8 dump_num = 0, idx, i, read_reg, doneflag = 0;
1221         u32 memory_size, fw_dump_len = 0;
1222
1223         /* dump sdio register first */
1224         btmrvl_sdio_dump_regs(priv);
1225
1226         if (!card->supports_fw_dump) {
1227                 BT_ERR("Firmware dump not supported for this card!");
1228                 return;
1229         }
1230
1231         for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
1232                 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1233
1234                 if (entry->mem_ptr) {
1235                         vfree(entry->mem_ptr);
1236                         entry->mem_ptr = NULL;
1237                 }
1238                 entry->mem_size = 0;
1239         }
1240
1241         btmrvl_sdio_wakeup_fw(priv);
1242         sdio_claim_host(card->func);
1243
1244         BT_INFO("== btmrvl firmware dump start ==");
1245
1246         stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1247         if (stat == RDWR_STATUS_FAILURE)
1248                 goto done;
1249
1250         reg = card->reg->fw_dump_start;
1251         /* Read the number of the memories which will dump */
1252         dump_num = sdio_readb(card->func, reg, &ret);
1253
1254         if (ret) {
1255                 BT_ERR("SDIO read memory length err");
1256                 goto done;
1257         }
1258
1259         /* Read the length of every memory which will dump */
1260         for (idx = 0; idx < dump_num; idx++) {
1261                 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1262
1263                 stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1264                 if (stat == RDWR_STATUS_FAILURE)
1265                         goto done;
1266
1267                 memory_size = 0;
1268                 reg = card->reg->fw_dump_start;
1269                 for (i = 0; i < 4; i++) {
1270                         read_reg = sdio_readb(card->func, reg, &ret);
1271                         if (ret) {
1272                                 BT_ERR("SDIO read err");
1273                                 goto done;
1274                         }
1275                         memory_size |= (read_reg << i*8);
1276                         reg++;
1277                 }
1278
1279                 if (memory_size == 0) {
1280                         BT_INFO("Firmware dump finished!");
1281                         break;
1282                 }
1283
1284                 BT_INFO("%s_SIZE=0x%x", entry->mem_name, memory_size);
1285                 entry->mem_ptr = vzalloc(memory_size + 1);
1286                 entry->mem_size = memory_size;
1287                 if (!entry->mem_ptr) {
1288                         BT_ERR("Vzalloc %s failed", entry->mem_name);
1289                         goto done;
1290                 }
1291
1292                 fw_dump_len += (strlen("========Start dump ") +
1293                                 strlen(entry->mem_name) +
1294                                 strlen("========\n") +
1295                                 (memory_size + 1) +
1296                                 strlen("\n========End dump========\n"));
1297
1298                 dbg_ptr = entry->mem_ptr;
1299                 end_ptr = dbg_ptr + memory_size;
1300
1301                 doneflag = entry->done_flag;
1302                 BT_INFO("Start %s output, please wait...",
1303                         entry->mem_name);
1304
1305                 do {
1306                         stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1307                         if (stat == RDWR_STATUS_FAILURE)
1308                                 goto done;
1309
1310                         reg_start = card->reg->fw_dump_start;
1311                         reg_end = card->reg->fw_dump_end;
1312                         for (reg = reg_start; reg <= reg_end; reg++) {
1313                                 *dbg_ptr = sdio_readb(card->func, reg, &ret);
1314                                 if (ret) {
1315                                         BT_ERR("SDIO read err");
1316                                         goto done;
1317                                 }
1318                                 if (dbg_ptr < end_ptr)
1319                                         dbg_ptr++;
1320                                 else
1321                                         BT_ERR("Allocated buffer not enough");
1322                         }
1323
1324                         if (stat != RDWR_STATUS_DONE) {
1325                                 continue;
1326                         } else {
1327                                 BT_INFO("%s done: size=0x%tx",
1328                                         entry->mem_name,
1329                                         dbg_ptr - entry->mem_ptr);
1330                                 break;
1331                         }
1332                 } while (1);
1333         }
1334
1335         BT_INFO("== btmrvl firmware dump end ==");
1336
1337 done:
1338         sdio_release_host(card->func);
1339
1340         if (fw_dump_len == 0)
1341                 return;
1342
1343         fw_dump_data = vzalloc(fw_dump_len+1);
1344         if (!fw_dump_data) {
1345                 BT_ERR("Vzalloc fw_dump_data fail!");
1346                 return;
1347         }
1348         fw_dump_ptr = fw_dump_data;
1349
1350         /* Dump all the memory data into single file, a userspace script will
1351            be used to split all the memory data to multiple files*/
1352         BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump start");
1353         for (idx = 0; idx < dump_num; idx++) {
1354                 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1355
1356                 if (entry->mem_ptr) {
1357                         strcpy(fw_dump_ptr, "========Start dump ");
1358                         fw_dump_ptr += strlen("========Start dump ");
1359
1360                         strcpy(fw_dump_ptr, entry->mem_name);
1361                         fw_dump_ptr += strlen(entry->mem_name);
1362
1363                         strcpy(fw_dump_ptr, "========\n");
1364                         fw_dump_ptr += strlen("========\n");
1365
1366                         memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1367                         fw_dump_ptr += entry->mem_size;
1368
1369                         strcpy(fw_dump_ptr, "\n========End dump========\n");
1370                         fw_dump_ptr += strlen("\n========End dump========\n");
1371
1372                         vfree(mem_type_mapping_tbl[idx].mem_ptr);
1373                         mem_type_mapping_tbl[idx].mem_ptr = NULL;
1374                 }
1375         }
1376
1377         /* fw_dump_data will be free in device coredump release function
1378            after 5 min*/
1379         dev_coredumpv(&card->func->dev, fw_dump_data, fw_dump_len, GFP_KERNEL);
1380         BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump end");
1381 }
1382
1383 static int btmrvl_sdio_probe(struct sdio_func *func,
1384                                         const struct sdio_device_id *id)
1385 {
1386         int ret = 0;
1387         struct btmrvl_private *priv = NULL;
1388         struct btmrvl_sdio_card *card = NULL;
1389
1390         BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
1391                         id->vendor, id->device, id->class, func->num);
1392
1393         card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
1394         if (!card)
1395                 return -ENOMEM;
1396
1397         card->func = func;
1398
1399         if (id->driver_data) {
1400                 struct btmrvl_sdio_device *data = (void *) id->driver_data;
1401                 card->helper = data->helper;
1402                 card->firmware = data->firmware;
1403                 card->reg = data->reg;
1404                 card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
1405                 card->support_pscan_win_report = data->support_pscan_win_report;
1406                 card->supports_fw_dump = data->supports_fw_dump;
1407         }
1408
1409         if (btmrvl_sdio_register_dev(card) < 0) {
1410                 BT_ERR("Failed to register BT device!");
1411                 return -ENODEV;
1412         }
1413
1414         /* Disable the interrupts on the card */
1415         btmrvl_sdio_disable_host_int(card);
1416
1417         if (btmrvl_sdio_download_fw(card)) {
1418                 BT_ERR("Downloading firmware failed!");
1419                 ret = -ENODEV;
1420                 goto unreg_dev;
1421         }
1422
1423         btmrvl_sdio_enable_host_int(card);
1424
1425         priv = btmrvl_add_card(card);
1426         if (!priv) {
1427                 BT_ERR("Initializing card failed!");
1428                 ret = -ENODEV;
1429                 goto disable_host_int;
1430         }
1431
1432         card->priv = priv;
1433
1434         /* Initialize the interface specific function pointers */
1435         priv->hw_host_to_card = btmrvl_sdio_host_to_card;
1436         priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
1437         priv->hw_process_int_status = btmrvl_sdio_process_int_status;
1438         priv->firmware_dump = btmrvl_sdio_dump_firmware;
1439
1440         if (btmrvl_register_hdev(priv)) {
1441                 BT_ERR("Register hdev failed!");
1442                 ret = -ENODEV;
1443                 goto disable_host_int;
1444         }
1445
1446         return 0;
1447
1448 disable_host_int:
1449         btmrvl_sdio_disable_host_int(card);
1450 unreg_dev:
1451         btmrvl_sdio_unregister_dev(card);
1452         return ret;
1453 }
1454
1455 static void btmrvl_sdio_remove(struct sdio_func *func)
1456 {
1457         struct btmrvl_sdio_card *card;
1458
1459         if (func) {
1460                 card = sdio_get_drvdata(func);
1461                 if (card) {
1462                         /* Send SHUTDOWN command & disable interrupt
1463                          * if user removes the module.
1464                          */
1465                         if (user_rmmod) {
1466                                 btmrvl_send_module_cfg_cmd(card->priv,
1467                                                         MODULE_SHUTDOWN_REQ);
1468                                 btmrvl_sdio_disable_host_int(card);
1469                         }
1470                         BT_DBG("unregester dev");
1471                         card->priv->surprise_removed = true;
1472                         btmrvl_sdio_unregister_dev(card);
1473                         btmrvl_remove_card(card->priv);
1474                 }
1475         }
1476 }
1477
1478 static int btmrvl_sdio_suspend(struct device *dev)
1479 {
1480         struct sdio_func *func = dev_to_sdio_func(dev);
1481         struct btmrvl_sdio_card *card;
1482         struct btmrvl_private *priv;
1483         mmc_pm_flag_t pm_flags;
1484         struct hci_dev *hcidev;
1485
1486         if (func) {
1487                 pm_flags = sdio_get_host_pm_caps(func);
1488                 BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func),
1489                        pm_flags);
1490                 if (!(pm_flags & MMC_PM_KEEP_POWER)) {
1491                         BT_ERR("%s: cannot remain alive while suspended",
1492                                sdio_func_id(func));
1493                         return -ENOSYS;
1494                 }
1495                 card = sdio_get_drvdata(func);
1496                 if (!card || !card->priv) {
1497                         BT_ERR("card or priv structure is not valid");
1498                         return 0;
1499                 }
1500         } else {
1501                 BT_ERR("sdio_func is not specified");
1502                 return 0;
1503         }
1504
1505         priv = card->priv;
1506         hcidev = priv->btmrvl_dev.hcidev;
1507         BT_DBG("%s: SDIO suspend", hcidev->name);
1508         hci_suspend_dev(hcidev);
1509         skb_queue_purge(&priv->adapter->tx_queue);
1510
1511         if (priv->adapter->hs_state != HS_ACTIVATED) {
1512                 if (btmrvl_enable_hs(priv)) {
1513                         BT_ERR("HS not actived, suspend failed!");
1514                         return -EBUSY;
1515                 }
1516         }
1517
1518         priv->adapter->is_suspended = true;
1519
1520         /* We will keep the power when hs enabled successfully */
1521         if (priv->adapter->hs_state == HS_ACTIVATED) {
1522                 BT_DBG("suspend with MMC_PM_KEEP_POWER");
1523                 return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1524         } else {
1525                 BT_DBG("suspend without MMC_PM_KEEP_POWER");
1526                 return 0;
1527         }
1528 }
1529
1530 static int btmrvl_sdio_resume(struct device *dev)
1531 {
1532         struct sdio_func *func = dev_to_sdio_func(dev);
1533         struct btmrvl_sdio_card *card;
1534         struct btmrvl_private *priv;
1535         mmc_pm_flag_t pm_flags;
1536         struct hci_dev *hcidev;
1537
1538         if (func) {
1539                 pm_flags = sdio_get_host_pm_caps(func);
1540                 BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func),
1541                        pm_flags);
1542                 card = sdio_get_drvdata(func);
1543                 if (!card || !card->priv) {
1544                         BT_ERR("card or priv structure is not valid");
1545                         return 0;
1546                 }
1547         } else {
1548                 BT_ERR("sdio_func is not specified");
1549                 return 0;
1550         }
1551         priv = card->priv;
1552
1553         if (!priv->adapter->is_suspended) {
1554                 BT_DBG("device already resumed");
1555                 return 0;
1556         }
1557
1558         priv->hw_wakeup_firmware(priv);
1559         priv->adapter->hs_state = HS_DEACTIVATED;
1560         hcidev = priv->btmrvl_dev.hcidev;
1561         BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name);
1562         priv->adapter->is_suspended = false;
1563         BT_DBG("%s: SDIO resume", hcidev->name);
1564         hci_resume_dev(hcidev);
1565
1566         return 0;
1567 }
1568
1569 static const struct dev_pm_ops btmrvl_sdio_pm_ops = {
1570         .suspend        = btmrvl_sdio_suspend,
1571         .resume         = btmrvl_sdio_resume,
1572 };
1573
1574 static struct sdio_driver bt_mrvl_sdio = {
1575         .name           = "btmrvl_sdio",
1576         .id_table       = btmrvl_sdio_ids,
1577         .probe          = btmrvl_sdio_probe,
1578         .remove         = btmrvl_sdio_remove,
1579         .drv = {
1580                 .owner = THIS_MODULE,
1581                 .pm = &btmrvl_sdio_pm_ops,
1582         }
1583 };
1584
1585 static int __init btmrvl_sdio_init_module(void)
1586 {
1587         if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
1588                 BT_ERR("SDIO Driver Registration Failed");
1589                 return -ENODEV;
1590         }
1591
1592         /* Clear the flag in case user removes the card. */
1593         user_rmmod = 0;
1594
1595         return 0;
1596 }
1597
1598 static void __exit btmrvl_sdio_exit_module(void)
1599 {
1600         /* Set the flag as user is removing this module. */
1601         user_rmmod = 1;
1602
1603         sdio_unregister_driver(&bt_mrvl_sdio);
1604 }
1605
1606 module_init(btmrvl_sdio_init_module);
1607 module_exit(btmrvl_sdio_exit_module);
1608
1609 MODULE_AUTHOR("Marvell International Ltd.");
1610 MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
1611 MODULE_VERSION(VERSION);
1612 MODULE_LICENSE("GPL v2");
1613 MODULE_FIRMWARE("mrvl/sd8688_helper.bin");
1614 MODULE_FIRMWARE("mrvl/sd8688.bin");
1615 MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
1616 MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");
1617 MODULE_FIRMWARE("mrvl/sd8887_uapsta.bin");
1618 MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin");