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 #include <linux/suspend.h>
  24
  25 #include <linux/mmc/sdio_ids.h>
  26 #include <linux/mmc/sdio_func.h>
  27 #include <linux/module.h>
  28 #include <linux/devcoredump.h>
  29
  30 #include <net/bluetooth/bluetooth.h>
  31 #include <net/bluetooth/hci_core.h>
  32
  33 #include "btmrvl_drv.h"
  34 #include "btmrvl_sdio.h"
  35
  36 #define VERSION "1.0"
  37
  38 static struct memory_type_mapping mem_type_mapping_tbl[] = {
  39         {"ITCM", NULL, 0, 0xF0},
  40         {"DTCM", NULL, 0, 0xF1},
  41         {"SQRAM", NULL, 0, 0xF2},
  42         {"APU", NULL, 0, 0xF3},
  43         {"CIU", NULL, 0, 0xF4},
  44         {"ICU", NULL, 0, 0xF5},
  45         {"MAC", NULL, 0, 0xF6},
  46         {"EXT7", NULL, 0, 0xF7},
  47         {"EXT8", NULL, 0, 0xF8},
  48         {"EXT9", NULL, 0, 0xF9},
  49         {"EXT10", NULL, 0, 0xFA},
  50         {"EXT11", NULL, 0, 0xFB},
  51         {"EXT12", NULL, 0, 0xFC},
  52         {"EXT13", NULL, 0, 0xFD},
  53         {"EXTLAST", NULL, 0, 0xFE},
  54 };
  55
  56 static const struct of_device_id btmrvl_sdio_of_match_table[] = {
  57         { .compatible = "marvell,sd8897-bt" },
  58         { .compatible = "marvell,sd8997-bt" },
  59         { }
  60 };
  61
  62 static irqreturn_t btmrvl_wake_irq_bt(int irq, void *priv)
  63 {
  64         struct btmrvl_sdio_card *card = priv;
  65         struct btmrvl_plt_wake_cfg *cfg = card->plt_wake_cfg;
  66
  67         pr_info("%s: wake by bt\n", __func__);
  68         cfg->wake_by_bt = true;
  69         disable_irq_nosync(irq);
  70
  71         pm_wakeup_event(&card->func->dev, 0);
  72         pm_system_wakeup();
  73
  74         return IRQ_HANDLED;
  75 }
  76
  77 /* This function parses device tree node using mmc subnode devicetree API.
  78  * The device node is saved in card->plt_of_node.
  79  * If the device tree node exists and includes interrupts attributes, this
  80  * function will request platform specific wakeup interrupt.
  81  */
  82 static int btmrvl_sdio_probe_of(struct device *dev,
  83                                 struct btmrvl_sdio_card *card)
  84 {
  85         struct btmrvl_plt_wake_cfg *cfg;
  86         int ret;
  87
  88         if (!dev->of_node ||
  89             !of_match_node(btmrvl_sdio_of_match_table, dev->of_node)) {
  90                 pr_err("sdio platform data not available\n");
  91                 return -1;
  92         }
  93
  94         card->plt_of_node = dev->of_node;
  95
  96         card->plt_wake_cfg = devm_kzalloc(dev, sizeof(*card->plt_wake_cfg),
  97                                           GFP_KERNEL);
  98         cfg = card->plt_wake_cfg;
  99         if (cfg && card->plt_of_node) {
 100                 cfg->irq_bt = irq_of_parse_and_map(card->plt_of_node, 0);
 101                 if (!cfg->irq_bt) {
 102                         dev_err(dev, "fail to parse irq_bt from device tree\n");
 103                         cfg->irq_bt = -1;
 104                 } else {
 105                         ret = devm_request_irq(dev, cfg->irq_bt,
 106                                                btmrvl_wake_irq_bt,
 107                                                0, "bt_wake", card);
 108                         if (ret) {
 109                                 dev_err(dev,
 110                                         "Failed to request irq_bt %d (%d)\n",
 111                                         cfg->irq_bt, ret);
 112                         }
 113                         disable_irq(cfg->irq_bt);
 114                 }
 115         }
 116
 117         return 0;
 118 }
 119
 120 /* The btmrvl_sdio_remove() callback function is called
 121  * when user removes this module from kernel space or ejects
 122  * the card from the slot. The driver handles these 2 cases
 123  * differently.
 124  * If the user is removing the module, a MODULE_SHUTDOWN_REQ
 125  * command is sent to firmware and interrupt will be disabled.
 126  * If the card is removed, there is no need to send command
 127  * or disable interrupt.
 128  *
 129  * The variable 'user_rmmod' is used to distinguish these two
 130  * scenarios. This flag is initialized as FALSE in case the card
 131  * is removed, and will be set to TRUE for module removal when
 132  * module_exit function is called.
 133  */
 134 static u8 user_rmmod;
 135 static u8 sdio_ireg;
 136
 137 static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = {
 138         .cfg = 0x03,
 139         .host_int_mask = 0x04,
 140         .host_intstatus = 0x05,
 141         .card_status = 0x20,
 142         .sq_read_base_addr_a0 = 0x10,
 143         .sq_read_base_addr_a1 = 0x11,
 144         .card_fw_status0 = 0x40,
 145         .card_fw_status1 = 0x41,
 146         .card_rx_len = 0x42,
 147         .card_rx_unit = 0x43,
 148         .io_port_0 = 0x00,
 149         .io_port_1 = 0x01,
 150         .io_port_2 = 0x02,
 151         .int_read_to_clear = false,
 152 };
 153 static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = {
 154         .cfg = 0x00,
 155         .host_int_mask = 0x02,
 156         .host_intstatus = 0x03,
 157         .card_status = 0x30,
 158         .sq_read_base_addr_a0 = 0x40,
 159         .sq_read_base_addr_a1 = 0x41,
 160         .card_revision = 0x5c,
 161         .card_fw_status0 = 0x60,
 162         .card_fw_status1 = 0x61,
 163         .card_rx_len = 0x62,
 164         .card_rx_unit = 0x63,
 165         .io_port_0 = 0x78,
 166         .io_port_1 = 0x79,
 167         .io_port_2 = 0x7a,
 168         .int_read_to_clear = false,
 169 };
 170
 171 static const struct btmrvl_sdio_card_reg btmrvl_reg_8887 = {
 172         .cfg = 0x00,
 173         .host_int_mask = 0x08,
 174         .host_intstatus = 0x0C,
 175         .card_status = 0x5C,
 176         .sq_read_base_addr_a0 = 0x6C,
 177         .sq_read_base_addr_a1 = 0x6D,
 178         .card_revision = 0xC8,
 179         .card_fw_status0 = 0x88,
 180         .card_fw_status1 = 0x89,
 181         .card_rx_len = 0x8A,
 182         .card_rx_unit = 0x8B,
 183         .io_port_0 = 0xE4,
 184         .io_port_1 = 0xE5,
 185         .io_port_2 = 0xE6,
 186         .int_read_to_clear = true,
 187         .host_int_rsr = 0x04,
 188         .card_misc_cfg = 0xD8,
 189 };
 190
 191 static const struct btmrvl_sdio_card_reg btmrvl_reg_8897 = {
 192         .cfg = 0x00,
 193         .host_int_mask = 0x02,
 194         .host_intstatus = 0x03,
 195         .card_status = 0x50,
 196         .sq_read_base_addr_a0 = 0x60,
 197         .sq_read_base_addr_a1 = 0x61,
 198         .card_revision = 0xbc,
 199         .card_fw_status0 = 0xc0,
 200         .card_fw_status1 = 0xc1,
 201         .card_rx_len = 0xc2,
 202         .card_rx_unit = 0xc3,
 203         .io_port_0 = 0xd8,
 204         .io_port_1 = 0xd9,
 205         .io_port_2 = 0xda,
 206         .int_read_to_clear = true,
 207         .host_int_rsr = 0x01,
 208         .card_misc_cfg = 0xcc,
 209         .fw_dump_ctrl = 0xe2,
 210         .fw_dump_start = 0xe3,
 211         .fw_dump_end = 0xea,
 212 };
 213
 214 static const struct btmrvl_sdio_card_reg btmrvl_reg_8997 = {
 215         .cfg = 0x00,
 216         .host_int_mask = 0x08,
 217         .host_intstatus = 0x0c,
 218         .card_status = 0x5c,
 219         .sq_read_base_addr_a0 = 0xf8,
 220         .sq_read_base_addr_a1 = 0xf9,
 221         .card_revision = 0xc8,
 222         .card_fw_status0 = 0xe8,
 223         .card_fw_status1 = 0xe9,
 224         .card_rx_len = 0xea,
 225         .card_rx_unit = 0xeb,
 226         .io_port_0 = 0xe4,
 227         .io_port_1 = 0xe5,
 228         .io_port_2 = 0xe6,
 229         .int_read_to_clear = true,
 230         .host_int_rsr = 0x04,
 231         .card_misc_cfg = 0xD8,
 232         .fw_dump_ctrl = 0xf0,
 233         .fw_dump_start = 0xf1,
 234         .fw_dump_end = 0xf8,
 235 };
 236
 237 static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
 238         .helper         = "mrvl/sd8688_helper.bin",
 239         .firmware       = "mrvl/sd8688.bin",
 240         .reg            = &btmrvl_reg_8688,
 241         .support_pscan_win_report = false,
 242         .sd_blksz_fw_dl = 64,
 243         .supports_fw_dump = false,
 244 };
 245
 246 static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
 247         .helper         = NULL,
 248         .firmware       = "mrvl/sd8787_uapsta.bin",
 249         .reg            = &btmrvl_reg_87xx,
 250         .support_pscan_win_report = false,
 251         .sd_blksz_fw_dl = 256,
 252         .supports_fw_dump = false,
 253 };
 254
 255 static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
 256         .helper         = NULL,
 257         .firmware       = "mrvl/sd8797_uapsta.bin",
 258         .reg            = &btmrvl_reg_87xx,
 259         .support_pscan_win_report = false,
 260         .sd_blksz_fw_dl = 256,
 261         .supports_fw_dump = false,
 262 };
 263
 264 static const struct btmrvl_sdio_device btmrvl_sdio_sd8887 = {
 265         .helper         = NULL,
 266         .firmware       = "mrvl/sd8887_uapsta.bin",
 267         .reg            = &btmrvl_reg_8887,
 268         .support_pscan_win_report = true,
 269         .sd_blksz_fw_dl = 256,
 270         .supports_fw_dump = false,
 271 };
 272
 273 static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = {
 274         .helper         = NULL,
 275         .firmware       = "mrvl/sd8897_uapsta.bin",
 276         .reg            = &btmrvl_reg_8897,
 277         .support_pscan_win_report = true,
 278         .sd_blksz_fw_dl = 256,
 279         .supports_fw_dump = true,
 280 };
 281
 282 static const struct btmrvl_sdio_device btmrvl_sdio_sd8997 = {
 283         .helper         = NULL,
 284         .firmware       = "mrvl/sd8997_uapsta.bin",
 285         .reg            = &btmrvl_reg_8997,
 286         .support_pscan_win_report = true,
 287         .sd_blksz_fw_dl = 256,
 288         .supports_fw_dump = true,
 289 };
 290
 291 static const struct sdio_device_id btmrvl_sdio_ids[] = {
 292         /* Marvell SD8688 Bluetooth device */
 293         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105),
 294                         .driver_data = (unsigned long)&btmrvl_sdio_sd8688 },
 295         /* Marvell SD8787 Bluetooth device */
 296         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A),
 297                         .driver_data = (unsigned long)&btmrvl_sdio_sd8787 },
 298         /* Marvell SD8787 Bluetooth AMP device */
 299         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911B),
 300                         .driver_data = (unsigned long)&btmrvl_sdio_sd8787 },
 301         /* Marvell SD8797 Bluetooth device */
 302         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A),
 303                         .driver_data = (unsigned long)&btmrvl_sdio_sd8797 },
 304         /* Marvell SD8887 Bluetooth device */
 305         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9136),
 306                         .driver_data = (unsigned long)&btmrvl_sdio_sd8887 },
 307         /* Marvell SD8897 Bluetooth device */
 308         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912E),
 309                         .driver_data = (unsigned long)&btmrvl_sdio_sd8897 },
 310         /* Marvell SD8997 Bluetooth device */
 311         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9142),
 312                         .driver_data = (unsigned long)&btmrvl_sdio_sd8997 },
 313
 314         { }     /* Terminating entry */
 315 };
 316
 317 MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
 318
 319 static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card)
 320 {
 321         u8 reg;
 322         int ret;
 323
 324         reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret);
 325         if (!ret)
 326                 card->rx_unit = reg;
 327
 328         return ret;
 329 }
 330
 331 static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat)
 332 {
 333         u8 fws0, fws1;
 334         int ret;
 335
 336         *dat = 0;
 337
 338         fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
 339         if (ret)
 340                 return -EIO;
 341
 342         fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret);
 343         if (ret)
 344                 return -EIO;
 345
 346         *dat = (((u16) fws1) << 8) | fws0;
 347
 348         return 0;
 349 }
 350
 351 static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat)
 352 {
 353         u8 reg;
 354         int ret;
 355
 356         reg = sdio_readb(card->func, card->reg->card_rx_len, &ret);
 357         if (!ret)
 358                 *dat = (u16) reg << card->rx_unit;
 359
 360         return ret;
 361 }
 362
 363 static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card,
 364                                                                 u8 mask)
 365 {
 366         int ret;
 367
 368         sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret);
 369         if (ret) {
 370                 BT_ERR("Unable to enable the host interrupt!");
 371                 ret = -EIO;
 372         }
 373
 374         return ret;
 375 }
 376
 377 static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card,
 378                                                                 u8 mask)
 379 {
 380         u8 host_int_mask;
 381         int ret;
 382
 383         host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret);
 384         if (ret)
 385                 return -EIO;
 386
 387         host_int_mask &= ~mask;
 388
 389         sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret);
 390         if (ret < 0) {
 391                 BT_ERR("Unable to disable the host interrupt!");
 392                 return -EIO;
 393         }
 394
 395         return 0;
 396 }
 397
 398 static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits)
 399 {
 400         unsigned int tries;
 401         u8 status;
 402         int ret;
 403
 404         for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) {
 405                 status = sdio_readb(card->func, card->reg->card_status, &ret);
 406                 if (ret)
 407                         goto failed;
 408                 if ((status & bits) == bits)
 409                         return ret;
 410
 411                 udelay(1);
 412         }
 413
 414         ret = -ETIMEDOUT;
 415
 416 failed:
 417         BT_ERR("FAILED! ret=%d", ret);
 418
 419         return ret;
 420 }
 421
 422 static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card,
 423                                                                 int pollnum)
 424 {
 425         u16 firmwarestat;
 426         int tries, ret;
 427
 428          /* Wait for firmware to become ready */
 429         for (tries = 0; tries < pollnum; tries++) {
 430                 sdio_claim_host(card->func);
 431                 ret = btmrvl_sdio_read_fw_status(card, &firmwarestat);
 432                 sdio_release_host(card->func);
 433                 if (ret < 0)
 434                         continue;
 435
 436                 if (firmwarestat == FIRMWARE_READY)
 437                         return 0;
 438
 439                 msleep(100);
 440         }
 441
 442         return -ETIMEDOUT;
 443 }
 444
 445 static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
 446 {
 447         const struct firmware *fw_helper = NULL;
 448         const u8 *helper = NULL;
 449         int ret;
 450         void *tmphlprbuf = NULL;
 451         int tmphlprbufsz, hlprblknow, helperlen;
 452         u8 *helperbuf;
 453         u32 tx_len;
 454
 455         ret = request_firmware(&fw_helper, card->helper,
 456                                                 &card->func->dev);
 457         if ((ret < 0) || !fw_helper) {
 458                 BT_ERR("request_firmware(helper) failed, error code = %d",
 459                                                                         ret);
 460                 ret = -ENOENT;
 461                 goto done;
 462         }
 463
 464         helper = fw_helper->data;
 465         helperlen = fw_helper->size;
 466
 467         BT_DBG("Downloading helper image (%d bytes), block size %d bytes",
 468                                                 helperlen, SDIO_BLOCK_SIZE);
 469
 470         tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
 471
 472         tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL);
 473         if (!tmphlprbuf) {
 474                 BT_ERR("Unable to allocate buffer for helper."
 475                         " Terminating download");
 476                 ret = -ENOMEM;
 477                 goto done;
 478         }
 479
 480         helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
 481
 482         /* Perform helper data transfer */
 483         tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE)
 484                         - SDIO_HEADER_LEN;
 485         hlprblknow = 0;
 486
 487         do {
 488                 ret = btmrvl_sdio_poll_card_status(card,
 489                                             CARD_IO_READY | DN_LD_CARD_RDY);
 490                 if (ret < 0) {
 491                         BT_ERR("Helper download poll status timeout @ %d",
 492                                 hlprblknow);
 493                         goto done;
 494                 }
 495
 496                 /* Check if there is more data? */
 497                 if (hlprblknow >= helperlen)
 498                         break;
 499
 500                 if (helperlen - hlprblknow < tx_len)
 501                         tx_len = helperlen - hlprblknow;
 502
 503                 /* Little-endian */
 504                 helperbuf[0] = ((tx_len & 0x000000ff) >> 0);
 505                 helperbuf[1] = ((tx_len & 0x0000ff00) >> 8);
 506                 helperbuf[2] = ((tx_len & 0x00ff0000) >> 16);
 507                 helperbuf[3] = ((tx_len & 0xff000000) >> 24);
 508
 509                 memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow],
 510                                 tx_len);
 511
 512                 /* Now send the data */
 513                 ret = sdio_writesb(card->func, card->ioport, helperbuf,
 514                                 FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE);
 515                 if (ret < 0) {
 516                         BT_ERR("IO error during helper download @ %d",
 517                                 hlprblknow);
 518                         goto done;
 519                 }
 520
 521                 hlprblknow += tx_len;
 522         } while (true);
 523
 524         BT_DBG("Transferring helper image EOF block");
 525
 526         memset(helperbuf, 0x0, SDIO_BLOCK_SIZE);
 527
 528         ret = sdio_writesb(card->func, card->ioport, helperbuf,
 529                                                         SDIO_BLOCK_SIZE);
 530         if (ret < 0) {
 531                 BT_ERR("IO error in writing helper image EOF block");
 532                 goto done;
 533         }
 534
 535         ret = 0;
 536
 537 done:
 538         kfree(tmphlprbuf);
 539         release_firmware(fw_helper);
 540         return ret;
 541 }
 542
 543 static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
 544 {
 545         const struct firmware *fw_firmware = NULL;
 546         const u8 *firmware = NULL;
 547         int firmwarelen, tmpfwbufsz, ret;
 548         unsigned int tries, offset;
 549         u8 base0, base1;
 550         void *tmpfwbuf = NULL;
 551         u8 *fwbuf;
 552         u16 len, blksz_dl = card->sd_blksz_fw_dl;
 553         int txlen = 0, tx_blocks = 0, count = 0;
 554
 555         ret = request_firmware(&fw_firmware, card->firmware,
 556                                                         &card->func->dev);
 557         if ((ret < 0) || !fw_firmware) {
 558                 BT_ERR("request_firmware(firmware) failed, error code = %d",
 559                                                                         ret);
 560                 ret = -ENOENT;
 561                 goto done;
 562         }
 563
 564         firmware = fw_firmware->data;
 565         firmwarelen = fw_firmware->size;
 566
 567         BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
 568
 569         tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
 570         tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL);
 571         if (!tmpfwbuf) {
 572                 BT_ERR("Unable to allocate buffer for firmware."
 573                        " Terminating download");
 574                 ret = -ENOMEM;
 575                 goto done;
 576         }
 577
 578         /* Ensure aligned firmware buffer */
 579         fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
 580
 581         /* Perform firmware data transfer */
 582         offset = 0;
 583         do {
 584                 ret = btmrvl_sdio_poll_card_status(card,
 585                                         CARD_IO_READY | DN_LD_CARD_RDY);
 586                 if (ret < 0) {
 587                         BT_ERR("FW download with helper poll status"
 588                                                 " timeout @ %d", offset);
 589                         goto done;
 590                 }
 591
 592                 /* Check if there is more data ? */
 593                 if (offset >= firmwarelen)
 594                         break;
 595
 596                 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
 597                         base0 = sdio_readb(card->func,
 598                                         card->reg->sq_read_base_addr_a0, &ret);
 599                         if (ret) {
 600                                 BT_ERR("BASE0 register read failed:"
 601                                         " base0 = 0x%04X(%d)."
 602                                         " Terminating download",
 603                                         base0, base0);
 604                                 ret = -EIO;
 605                                 goto done;
 606                         }
 607                         base1 = sdio_readb(card->func,
 608                                         card->reg->sq_read_base_addr_a1, &ret);
 609                         if (ret) {
 610                                 BT_ERR("BASE1 register read failed:"
 611                                         " base1 = 0x%04X(%d)."
 612                                         " Terminating download",
 613                                         base1, base1);
 614                                 ret = -EIO;
 615                                 goto done;
 616                         }
 617
 618                         len = (((u16) base1) << 8) | base0;
 619                         if (len)
 620                                 break;
 621
 622                         udelay(10);
 623                 }
 624
 625                 if (!len)
 626                         break;
 627                 else if (len > BTM_UPLD_SIZE) {
 628                         BT_ERR("FW download failure @%d, invalid length %d",
 629                                                                 offset, len);
 630                         ret = -EINVAL;
 631                         goto done;
 632                 }
 633
 634                 txlen = len;
 635
 636                 if (len & BIT(0)) {
 637                         count++;
 638                         if (count > MAX_WRITE_IOMEM_RETRY) {
 639                                 BT_ERR("FW download failure @%d, "
 640                                         "over max retry count", offset);
 641                                 ret = -EIO;
 642                                 goto done;
 643                         }
 644                         BT_ERR("FW CRC error indicated by the helper: "
 645                                 "len = 0x%04X, txlen = %d", len, txlen);
 646                         len &= ~BIT(0);
 647                         /* Set txlen to 0 so as to resend from same offset */
 648                         txlen = 0;
 649                 } else {
 650                         count = 0;
 651
 652                         /* Last block ? */
 653                         if (firmwarelen - offset < txlen)
 654                                 txlen = firmwarelen - offset;
 655
 656                         tx_blocks = DIV_ROUND_UP(txlen, blksz_dl);
 657
 658                         memcpy(fwbuf, &firmware[offset], txlen);
 659                 }
 660
 661                 ret = sdio_writesb(card->func, card->ioport, fwbuf,
 662                                                 tx_blocks * blksz_dl);
 663
 664                 if (ret < 0) {
 665                         BT_ERR("FW download, writesb(%d) failed @%d",
 666                                                         count, offset);
 667                         sdio_writeb(card->func, HOST_CMD53_FIN,
 668                                                 card->reg->cfg, &ret);
 669                         if (ret)
 670                                 BT_ERR("writeb failed (CFG)");
 671                 }
 672
 673                 offset += txlen;
 674         } while (true);
 675
 676         BT_INFO("FW download over, size %d bytes", offset);
 677
 678         ret = 0;
 679
 680 done:
 681         kfree(tmpfwbuf);
 682         release_firmware(fw_firmware);
 683         return ret;
 684 }
 685
 686 static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
 687 {
 688         u16 buf_len = 0;
 689         int ret, num_blocks, blksz;
 690         struct sk_buff *skb = NULL;
 691         u32 type;
 692         u8 *payload;
 693         struct hci_dev *hdev = priv->btmrvl_dev.hcidev;
 694         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
 695
 696         if (!card || !card->func) {
 697                 BT_ERR("card or function is NULL!");
 698                 ret = -EINVAL;
 699                 goto exit;
 700         }
 701
 702         /* Read the length of data to be transferred */
 703         ret = btmrvl_sdio_read_rx_len(card, &buf_len);
 704         if (ret < 0) {
 705                 BT_ERR("read rx_len failed");
 706                 ret = -EIO;
 707                 goto exit;
 708         }
 709
 710         blksz = SDIO_BLOCK_SIZE;
 711         num_blocks = DIV_ROUND_UP(buf_len, blksz);
 712
 713         if (buf_len <= SDIO_HEADER_LEN
 714             || (num_blocks * blksz) > ALLOC_BUF_SIZE) {
 715                 BT_ERR("invalid packet length: %d", buf_len);
 716                 ret = -EINVAL;
 717                 goto exit;
 718         }
 719
 720         /* Allocate buffer */
 721         skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_KERNEL);
 722         if (!skb) {
 723                 BT_ERR("No free skb");
 724                 ret = -ENOMEM;
 725                 goto exit;
 726         }
 727
 728         if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
 729                 skb_put(skb, (unsigned long) skb->data &
 730                                         (BTSDIO_DMA_ALIGN - 1));
 731                 skb_pull(skb, (unsigned long) skb->data &
 732                                         (BTSDIO_DMA_ALIGN - 1));
 733         }
 734
 735         payload = skb->data;
 736
 737         ret = sdio_readsb(card->func, payload, card->ioport,
 738                           num_blocks * blksz);
 739         if (ret < 0) {
 740                 BT_ERR("readsb failed: %d", ret);
 741                 ret = -EIO;
 742                 goto exit;
 743         }
 744
 745         /* This is SDIO specific header length: byte[2][1][0], type: byte[3]
 746          * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor)
 747          */
 748
 749         buf_len = payload[0];
 750         buf_len |= payload[1] << 8;
 751         buf_len |= payload[2] << 16;
 752
 753         if (buf_len > blksz * num_blocks) {
 754                 BT_ERR("Skip incorrect packet: hdrlen %d buffer %d",
 755                        buf_len, blksz * num_blocks);
 756                 ret = -EIO;
 757                 goto exit;
 758         }
 759
 760         type = payload[3];
 761
 762         switch (type) {
 763         case HCI_ACLDATA_PKT:
 764         case HCI_SCODATA_PKT:
 765         case HCI_EVENT_PKT:
 766                 hci_skb_pkt_type(skb) = type;
 767                 skb_put(skb, buf_len);
 768                 skb_pull(skb, SDIO_HEADER_LEN);
 769
 770                 if (type == HCI_EVENT_PKT) {
 771                         if (btmrvl_check_evtpkt(priv, skb))
 772                                 hci_recv_frame(hdev, skb);
 773                 } else {
 774                         hci_recv_frame(hdev, skb);
 775                 }
 776
 777                 hdev->stat.byte_rx += buf_len;
 778                 break;
 779
 780         case MRVL_VENDOR_PKT:
 781                 hci_skb_pkt_type(skb) = HCI_VENDOR_PKT;
 782                 skb_put(skb, buf_len);
 783                 skb_pull(skb, SDIO_HEADER_LEN);
 784
 785                 if (btmrvl_process_event(priv, skb))
 786                         hci_recv_frame(hdev, skb);
 787
 788                 hdev->stat.byte_rx += buf_len;
 789                 break;
 790
 791         default:
 792                 BT_ERR("Unknown packet type:%d", type);
 793                 BT_ERR("hex: %*ph", blksz * num_blocks, payload);
 794
 795                 kfree_skb(skb);
 796                 skb = NULL;
 797                 break;
 798         }
 799
 800 exit:
 801         if (ret) {
 802                 hdev->stat.err_rx++;
 803                 kfree_skb(skb);
 804         }
 805
 806         return ret;
 807 }
 808
 809 static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv)
 810 {
 811         ulong flags;
 812         u8 ireg;
 813         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
 814
 815         spin_lock_irqsave(&priv->driver_lock, flags);
 816         ireg = sdio_ireg;
 817         sdio_ireg = 0;
 818         spin_unlock_irqrestore(&priv->driver_lock, flags);
 819
 820         sdio_claim_host(card->func);
 821         if (ireg & DN_LD_HOST_INT_STATUS) {
 822                 if (priv->btmrvl_dev.tx_dnld_rdy)
 823                         BT_DBG("tx_done already received: "
 824                                 " int_status=0x%x", ireg);
 825                 else
 826                         priv->btmrvl_dev.tx_dnld_rdy = true;
 827         }
 828
 829         if (ireg & UP_LD_HOST_INT_STATUS)
 830                 btmrvl_sdio_card_to_host(priv);
 831
 832         sdio_release_host(card->func);
 833
 834         return 0;
 835 }
 836
 837 static int btmrvl_sdio_read_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
 838 {
 839         struct btmrvl_adapter *adapter = card->priv->adapter;
 840         int ret;
 841
 842         ret = sdio_readsb(card->func, adapter->hw_regs, 0, SDIO_BLOCK_SIZE);
 843         if (ret) {
 844                 BT_ERR("sdio_readsb: read int hw_regs failed: %d", ret);
 845                 return ret;
 846         }
 847
 848         *ireg = adapter->hw_regs[card->reg->host_intstatus];
 849         BT_DBG("hw_regs[%#x]=%#x", card->reg->host_intstatus, *ireg);
 850
 851         return 0;
 852 }
 853
 854 static int btmrvl_sdio_write_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
 855 {
 856         int ret;
 857
 858         *ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret);
 859         if (ret) {
 860                 BT_ERR("sdio_readb: read int status failed: %d", ret);
 861                 return ret;
 862         }
 863
 864         if (*ireg) {
 865                 /*
 866                  * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
 867                  * Clear the interrupt status register and re-enable the
 868                  * interrupt.
 869                  */
 870                 BT_DBG("int_status = 0x%x", *ireg);
 871
 872                 sdio_writeb(card->func, ~(*ireg) & (DN_LD_HOST_INT_STATUS |
 873                                                     UP_LD_HOST_INT_STATUS),
 874                             card->reg->host_intstatus, &ret);
 875                 if (ret) {
 876                         BT_ERR("sdio_writeb: clear int status failed: %d", ret);
 877                         return ret;
 878                 }
 879         }
 880
 881         return 0;
 882 }
 883
 884 static void btmrvl_sdio_interrupt(struct sdio_func *func)
 885 {
 886         struct btmrvl_private *priv;
 887         struct btmrvl_sdio_card *card;
 888         ulong flags;
 889         u8 ireg = 0;
 890         int ret;
 891
 892         card = sdio_get_drvdata(func);
 893         if (!card || !card->priv) {
 894                 BT_ERR("sbi_interrupt(%p) card or priv is NULL, card=%p",
 895                        func, card);
 896                 return;
 897         }
 898
 899         priv = card->priv;
 900
 901         if (priv->surprise_removed)
 902                 return;
 903
 904         if (card->reg->int_read_to_clear)
 905                 ret = btmrvl_sdio_read_to_clear(card, &ireg);
 906         else
 907                 ret = btmrvl_sdio_write_to_clear(card, &ireg);
 908
 909         if (ret)
 910                 return;
 911
 912         spin_lock_irqsave(&priv->driver_lock, flags);
 913         sdio_ireg |= ireg;
 914         spin_unlock_irqrestore(&priv->driver_lock, flags);
 915
 916         btmrvl_interrupt(priv);
 917 }
 918
 919 static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
 920 {
 921         struct sdio_func *func;
 922         u8 reg;
 923         int ret;
 924
 925         if (!card || !card->func) {
 926                 BT_ERR("Error: card or function is NULL!");
 927                 ret = -EINVAL;
 928                 goto failed;
 929         }
 930
 931         func = card->func;
 932
 933         sdio_claim_host(func);
 934
 935         ret = sdio_enable_func(func);
 936         if (ret) {
 937                 BT_ERR("sdio_enable_func() failed: ret=%d", ret);
 938                 ret = -EIO;
 939                 goto release_host;
 940         }
 941
 942         ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
 943         if (ret) {
 944                 BT_ERR("sdio_claim_irq failed: ret=%d", ret);
 945                 ret = -EIO;
 946                 goto disable_func;
 947         }
 948
 949         ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
 950         if (ret) {
 951                 BT_ERR("cannot set SDIO block size");
 952                 ret = -EIO;
 953                 goto release_irq;
 954         }
 955
 956         reg = sdio_readb(func, card->reg->io_port_0, &ret);
 957         if (ret < 0) {
 958                 ret = -EIO;
 959                 goto release_irq;
 960         }
 961
 962         card->ioport = reg;
 963
 964         reg = sdio_readb(func, card->reg->io_port_1, &ret);
 965         if (ret < 0) {
 966                 ret = -EIO;
 967                 goto release_irq;
 968         }
 969
 970         card->ioport |= (reg << 8);
 971
 972         reg = sdio_readb(func, card->reg->io_port_2, &ret);
 973         if (ret < 0) {
 974                 ret = -EIO;
 975                 goto release_irq;
 976         }
 977
 978         card->ioport |= (reg << 16);
 979
 980         BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
 981
 982         if (card->reg->int_read_to_clear) {
 983                 reg = sdio_readb(func, card->reg->host_int_rsr, &ret);
 984                 if (ret < 0) {
 985                         ret = -EIO;
 986                         goto release_irq;
 987                 }
 988                 sdio_writeb(func, reg | 0x3f, card->reg->host_int_rsr, &ret);
 989                 if (ret < 0) {
 990                         ret = -EIO;
 991                         goto release_irq;
 992                 }
 993
 994                 reg = sdio_readb(func, card->reg->card_misc_cfg, &ret);
 995                 if (ret < 0) {
 996                         ret = -EIO;
 997                         goto release_irq;
 998                 }
 999                 sdio_writeb(func, reg | 0x10, card->reg->card_misc_cfg, &ret);
1000                 if (ret < 0) {
1001                         ret = -EIO;
1002                         goto release_irq;
1003                 }
1004         }
1005
1006         sdio_set_drvdata(func, card);
1007
1008         sdio_release_host(func);
1009
1010         return 0;
1011
1012 release_irq:
1013         sdio_release_irq(func);
1014
1015 disable_func:
1016         sdio_disable_func(func);
1017
1018 release_host:
1019         sdio_release_host(func);
1020
1021 failed:
1022         return ret;
1023 }
1024
1025 static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
1026 {
1027         if (card && card->func) {
1028                 sdio_claim_host(card->func);
1029                 sdio_release_irq(card->func);
1030                 sdio_disable_func(card->func);
1031                 sdio_release_host(card->func);
1032                 sdio_set_drvdata(card->func, NULL);
1033         }
1034
1035         return 0;
1036 }
1037
1038 static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
1039 {
1040         int ret;
1041
1042         if (!card || !card->func)
1043                 return -EINVAL;
1044
1045         sdio_claim_host(card->func);
1046
1047         ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
1048
1049         btmrvl_sdio_get_rx_unit(card);
1050
1051         sdio_release_host(card->func);
1052
1053         return ret;
1054 }
1055
1056 static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
1057 {
1058         int ret;
1059
1060         if (!card || !card->func)
1061                 return -EINVAL;
1062
1063         sdio_claim_host(card->func);
1064
1065         ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
1066
1067         sdio_release_host(card->func);
1068
1069         return ret;
1070 }
1071
1072 static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
1073                                 u8 *payload, u16 nb)
1074 {
1075         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1076         int ret = 0;
1077         int blksz;
1078         int i = 0;
1079         u8 *buf = NULL;
1080         void *tmpbuf = NULL;
1081         int tmpbufsz;
1082
1083         if (!card || !card->func) {
1084                 BT_ERR("card or function is NULL!");
1085                 return -EINVAL;
1086         }
1087
1088         blksz = DIV_ROUND_UP(nb, SDIO_BLOCK_SIZE) * SDIO_BLOCK_SIZE;
1089
1090         buf = payload;
1091         if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1) ||
1092             nb < blksz) {
1093                 tmpbufsz = ALIGN_SZ(blksz, BTSDIO_DMA_ALIGN) +
1094                            BTSDIO_DMA_ALIGN;
1095                 tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
1096                 if (!tmpbuf)
1097                         return -ENOMEM;
1098                 buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
1099                 memcpy(buf, payload, nb);
1100         }
1101
1102         sdio_claim_host(card->func);
1103
1104         do {
1105                 /* Transfer data to card */
1106                 ret = sdio_writesb(card->func, card->ioport, buf,
1107                                    blksz);
1108                 if (ret < 0) {
1109                         i++;
1110                         BT_ERR("i=%d writesb failed: %d", i, ret);
1111                         BT_ERR("hex: %*ph", nb, payload);
1112                         ret = -EIO;
1113                         if (i > MAX_WRITE_IOMEM_RETRY)
1114                                 goto exit;
1115                 }
1116         } while (ret);
1117
1118         priv->btmrvl_dev.tx_dnld_rdy = false;
1119
1120 exit:
1121         sdio_release_host(card->func);
1122         kfree(tmpbuf);
1123
1124         return ret;
1125 }
1126
1127 static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
1128 {
1129         int ret;
1130         u8 fws0;
1131         int pollnum = MAX_POLL_TRIES;
1132
1133         if (!card || !card->func) {
1134                 BT_ERR("card or function is NULL!");
1135                 return -EINVAL;
1136         }
1137
1138         if (!btmrvl_sdio_verify_fw_download(card, 1)) {
1139                 BT_DBG("Firmware already downloaded!");
1140                 return 0;
1141         }
1142
1143         sdio_claim_host(card->func);
1144
1145         /* Check if other function driver is downloading the firmware */
1146         fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
1147         if (ret) {
1148                 BT_ERR("Failed to read FW downloading status!");
1149                 ret = -EIO;
1150                 goto done;
1151         }
1152         if (fws0) {
1153                 BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0);
1154
1155                 /* Give other function more time to download the firmware */
1156                 pollnum *= 10;
1157         } else {
1158                 if (card->helper) {
1159                         ret = btmrvl_sdio_download_helper(card);
1160                         if (ret) {
1161                                 BT_ERR("Failed to download helper!");
1162                                 ret = -EIO;
1163                                 goto done;
1164                         }
1165                 }
1166
1167                 if (btmrvl_sdio_download_fw_w_helper(card)) {
1168                         BT_ERR("Failed to download firmware!");
1169                         ret = -EIO;
1170                         goto done;
1171                 }
1172         }
1173
1174         /*
1175          * winner or not, with this test the FW synchronizes when the
1176          * module can continue its initialization
1177          */
1178         if (btmrvl_sdio_verify_fw_download(card, pollnum)) {
1179                 BT_ERR("FW failed to be active in time!");
1180                 ret = -ETIMEDOUT;
1181                 goto done;
1182         }
1183
1184         sdio_release_host(card->func);
1185
1186         return 0;
1187
1188 done:
1189         sdio_release_host(card->func);
1190         return ret;
1191 }
1192
1193 static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
1194 {
1195         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1196         int ret = 0;
1197
1198         if (!card || !card->func) {
1199                 BT_ERR("card or function is NULL!");
1200                 return -EINVAL;
1201         }
1202
1203         sdio_claim_host(card->func);
1204
1205         sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret);
1206
1207         sdio_release_host(card->func);
1208
1209         BT_DBG("wake up firmware");
1210
1211         return ret;
1212 }
1213
1214 static void btmrvl_sdio_dump_regs(struct btmrvl_private *priv)
1215 {
1216         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1217         int ret = 0;
1218         unsigned int reg, reg_start, reg_end;
1219         char buf[256], *ptr;
1220         u8 loop, func, data;
1221         int MAX_LOOP = 2;
1222
1223         btmrvl_sdio_wakeup_fw(priv);
1224         sdio_claim_host(card->func);
1225
1226         for (loop = 0; loop < MAX_LOOP; loop++) {
1227                 memset(buf, 0, sizeof(buf));
1228                 ptr = buf;
1229
1230                 if (loop == 0) {
1231                         /* Read the registers of SDIO function0 */
1232                         func = loop;
1233                         reg_start = 0;
1234                         reg_end = 9;
1235                 } else {
1236                         func = 2;
1237                         reg_start = 0;
1238                         reg_end = 0x09;
1239                 }
1240
1241                 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
1242                                func, reg_start, reg_end);
1243                 for (reg = reg_start; reg <= reg_end; reg++) {
1244                         if (func == 0)
1245                                 data = sdio_f0_readb(card->func, reg, &ret);
1246                         else
1247                                 data = sdio_readb(card->func, reg, &ret);
1248
1249                         if (!ret) {
1250                                 ptr += sprintf(ptr, "%02x ", data);
1251                         } else {
1252                                 ptr += sprintf(ptr, "ERR");
1253                                 break;
1254                         }
1255                 }
1256
1257                 BT_INFO("%s", buf);
1258         }
1259
1260         sdio_release_host(card->func);
1261 }
1262
1263 /* This function read/write firmware */
1264 static enum
1265 rdwr_status btmrvl_sdio_rdwr_firmware(struct btmrvl_private *priv,
1266                                       u8 doneflag)
1267 {
1268         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1269         int ret, tries;
1270         u8 ctrl_data = 0;
1271
1272         sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl,
1273                     &ret);
1274
1275         if (ret) {
1276                 BT_ERR("SDIO write err");
1277                 return RDWR_STATUS_FAILURE;
1278         }
1279
1280         for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
1281                 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
1282                                        &ret);
1283
1284                 if (ret) {
1285                         BT_ERR("SDIO read err");
1286                         return RDWR_STATUS_FAILURE;
1287                 }
1288
1289                 if (ctrl_data == FW_DUMP_DONE)
1290                         break;
1291                 if (doneflag && ctrl_data == doneflag)
1292                         return RDWR_STATUS_DONE;
1293                 if (ctrl_data != FW_DUMP_HOST_READY) {
1294                         BT_INFO("The ctrl reg was changed, re-try again!");
1295                         sdio_writeb(card->func, FW_DUMP_HOST_READY,
1296                                     card->reg->fw_dump_ctrl, &ret);
1297                         if (ret) {
1298                                 BT_ERR("SDIO write err");
1299                                 return RDWR_STATUS_FAILURE;
1300                         }
1301                 }
1302                 usleep_range(100, 200);
1303         }
1304
1305         if (ctrl_data == FW_DUMP_HOST_READY) {
1306                 BT_ERR("Fail to pull ctrl_data");
1307                 return RDWR_STATUS_FAILURE;
1308         }
1309
1310         return RDWR_STATUS_SUCCESS;
1311 }
1312
1313 /* This function dump sdio register and memory data */
1314 static void btmrvl_sdio_coredump(struct device *dev)
1315 {
1316         struct sdio_func *func = dev_to_sdio_func(dev);
1317         struct btmrvl_sdio_card *card;
1318         struct btmrvl_private *priv;
1319         int ret = 0;
1320         unsigned int reg, reg_start, reg_end;
1321         enum rdwr_status stat;
1322         u8 *dbg_ptr, *end_ptr, *fw_dump_data, *fw_dump_ptr;
1323         u8 dump_num = 0, idx, i, read_reg, doneflag = 0;
1324         u32 memory_size, fw_dump_len = 0;
1325
1326         card = sdio_get_drvdata(func);
1327         priv = card->priv;
1328
1329         /* dump sdio register first */
1330         btmrvl_sdio_dump_regs(priv);
1331
1332         if (!card->supports_fw_dump) {
1333                 BT_ERR("Firmware dump not supported for this card!");
1334                 return;
1335         }
1336
1337         for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
1338                 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1339
1340                 if (entry->mem_ptr) {
1341                         vfree(entry->mem_ptr);
1342                         entry->mem_ptr = NULL;
1343                 }
1344                 entry->mem_size = 0;
1345         }
1346
1347         btmrvl_sdio_wakeup_fw(priv);
1348         sdio_claim_host(card->func);
1349
1350         BT_INFO("== btmrvl firmware dump start ==");
1351
1352         stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1353         if (stat == RDWR_STATUS_FAILURE)
1354                 goto done;
1355
1356         reg = card->reg->fw_dump_start;
1357         /* Read the number of the memories which will dump */
1358         dump_num = sdio_readb(card->func, reg, &ret);
1359
1360         if (ret) {
1361                 BT_ERR("SDIO read memory length err");
1362                 goto done;
1363         }
1364
1365         /* Read the length of every memory which will dump */
1366         for (idx = 0; idx < dump_num; idx++) {
1367                 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1368
1369                 stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1370                 if (stat == RDWR_STATUS_FAILURE)
1371                         goto done;
1372
1373                 memory_size = 0;
1374                 reg = card->reg->fw_dump_start;
1375                 for (i = 0; i < 4; i++) {
1376                         read_reg = sdio_readb(card->func, reg, &ret);
1377                         if (ret) {
1378                                 BT_ERR("SDIO read err");
1379                                 goto done;
1380                         }
1381                         memory_size |= (read_reg << i*8);
1382                         reg++;
1383                 }
1384
1385                 if (memory_size == 0) {
1386                         BT_INFO("Firmware dump finished!");
1387                         sdio_writeb(card->func, FW_DUMP_READ_DONE,
1388                                     card->reg->fw_dump_ctrl, &ret);
1389                         if (ret) {
1390                                 BT_ERR("SDIO Write MEMDUMP_FINISH ERR");
1391                                 goto done;
1392                         }
1393                         break;
1394                 }
1395
1396                 BT_INFO("%s_SIZE=0x%x", entry->mem_name, memory_size);
1397                 entry->mem_ptr = vzalloc(memory_size + 1);
1398                 entry->mem_size = memory_size;
1399                 if (!entry->mem_ptr) {
1400                         BT_ERR("Vzalloc %s failed", entry->mem_name);
1401                         goto done;
1402                 }
1403
1404                 fw_dump_len += (strlen("========Start dump ") +
1405                                 strlen(entry->mem_name) +
1406                                 strlen("========\n") +
1407                                 (memory_size + 1) +
1408                                 strlen("\n========End dump========\n"));
1409
1410                 dbg_ptr = entry->mem_ptr;
1411                 end_ptr = dbg_ptr + memory_size;
1412
1413                 doneflag = entry->done_flag;
1414                 BT_INFO("Start %s output, please wait...",
1415                         entry->mem_name);
1416
1417                 do {
1418                         stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1419                         if (stat == RDWR_STATUS_FAILURE)
1420                                 goto done;
1421
1422                         reg_start = card->reg->fw_dump_start;
1423                         reg_end = card->reg->fw_dump_end;
1424                         for (reg = reg_start; reg <= reg_end; reg++) {
1425                                 *dbg_ptr = sdio_readb(card->func, reg, &ret);
1426                                 if (ret) {
1427                                         BT_ERR("SDIO read err");
1428                                         goto done;
1429                                 }
1430                                 if (dbg_ptr < end_ptr)
1431                                         dbg_ptr++;
1432                                 else
1433                                         BT_ERR("Allocated buffer not enough");
1434                         }
1435
1436                         if (stat != RDWR_STATUS_DONE) {
1437                                 continue;
1438                         } else {
1439                                 BT_INFO("%s done: size=0x%tx",
1440                                         entry->mem_name,
1441                                         dbg_ptr - entry->mem_ptr);
1442                                 break;
1443                         }
1444                 } while (1);
1445         }
1446
1447         BT_INFO("== btmrvl firmware dump end ==");
1448
1449 done:
1450         sdio_release_host(card->func);
1451
1452         if (fw_dump_len == 0)
1453                 return;
1454
1455         fw_dump_data = vzalloc(fw_dump_len+1);
1456         if (!fw_dump_data) {
1457                 BT_ERR("Vzalloc fw_dump_data fail!");
1458                 return;
1459         }
1460         fw_dump_ptr = fw_dump_data;
1461
1462         /* Dump all the memory data into single file, a userspace script will
1463          * be used to split all the memory data to multiple files
1464          */
1465         BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump start");
1466         for (idx = 0; idx < dump_num; idx++) {
1467                 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1468
1469                 if (entry->mem_ptr) {
1470                         strcpy(fw_dump_ptr, "========Start dump ");
1471                         fw_dump_ptr += strlen("========Start dump ");
1472
1473                         strcpy(fw_dump_ptr, entry->mem_name);
1474                         fw_dump_ptr += strlen(entry->mem_name);
1475
1476                         strcpy(fw_dump_ptr, "========\n");
1477                         fw_dump_ptr += strlen("========\n");
1478
1479                         memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1480                         fw_dump_ptr += entry->mem_size;
1481
1482                         strcpy(fw_dump_ptr, "\n========End dump========\n");
1483                         fw_dump_ptr += strlen("\n========End dump========\n");
1484
1485                         vfree(mem_type_mapping_tbl[idx].mem_ptr);
1486                         mem_type_mapping_tbl[idx].mem_ptr = NULL;
1487                 }
1488         }
1489
1490         /* fw_dump_data will be free in device coredump release function
1491          * after 5 min
1492          */
1493         dev_coredumpv(&card->func->dev, fw_dump_data, fw_dump_len, GFP_KERNEL);
1494         BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump end");
1495 }
1496
1497 static int btmrvl_sdio_probe(struct sdio_func *func,
1498                                         const struct sdio_device_id *id)
1499 {
1500         int ret = 0;
1501         struct btmrvl_private *priv = NULL;
1502         struct btmrvl_sdio_card *card = NULL;
1503
1504         BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
1505                         id->vendor, id->device, id->class, func->num);
1506
1507         card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
1508         if (!card)
1509                 return -ENOMEM;
1510
1511         card->func = func;
1512
1513         if (id->driver_data) {
1514                 struct btmrvl_sdio_device *data = (void *) id->driver_data;
1515                 card->helper = data->helper;
1516                 card->firmware = data->firmware;
1517                 card->reg = data->reg;
1518                 card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
1519                 card->support_pscan_win_report = data->support_pscan_win_report;
1520                 card->supports_fw_dump = data->supports_fw_dump;
1521         }
1522
1523         if (btmrvl_sdio_register_dev(card) < 0) {
1524                 BT_ERR("Failed to register BT device!");
1525                 return -ENODEV;
1526         }
1527
1528         /* Disable the interrupts on the card */
1529         btmrvl_sdio_disable_host_int(card);
1530
1531         if (btmrvl_sdio_download_fw(card)) {
1532                 BT_ERR("Downloading firmware failed!");
1533                 ret = -ENODEV;
1534                 goto unreg_dev;
1535         }
1536
1537         btmrvl_sdio_enable_host_int(card);
1538
1539         /* Device tree node parsing and platform specific configuration*/
1540         btmrvl_sdio_probe_of(&func->dev, card);
1541
1542         priv = btmrvl_add_card(card);
1543         if (!priv) {
1544                 BT_ERR("Initializing card failed!");
1545                 ret = -ENODEV;
1546                 goto disable_host_int;
1547         }
1548
1549         card->priv = priv;
1550
1551         /* Initialize the interface specific function pointers */
1552         priv->hw_host_to_card = btmrvl_sdio_host_to_card;
1553         priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
1554         priv->hw_process_int_status = btmrvl_sdio_process_int_status;
1555
1556         if (btmrvl_register_hdev(priv)) {
1557                 BT_ERR("Register hdev failed!");
1558                 ret = -ENODEV;
1559                 goto disable_host_int;
1560         }
1561
1562         return 0;
1563
1564 disable_host_int:
1565         btmrvl_sdio_disable_host_int(card);
1566 unreg_dev:
1567         btmrvl_sdio_unregister_dev(card);
1568         return ret;
1569 }
1570
1571 static void btmrvl_sdio_remove(struct sdio_func *func)
1572 {
1573         struct btmrvl_sdio_card *card;
1574
1575         if (func) {
1576                 card = sdio_get_drvdata(func);
1577                 if (card) {
1578                         /* Send SHUTDOWN command & disable interrupt
1579                          * if user removes the module.
1580                          */
1581                         if (user_rmmod) {
1582                                 btmrvl_send_module_cfg_cmd(card->priv,
1583                                                         MODULE_SHUTDOWN_REQ);
1584                                 btmrvl_sdio_disable_host_int(card);
1585                         }
1586                         BT_DBG("unregister dev");
1587                         card->priv->surprise_removed = true;
1588                         btmrvl_sdio_unregister_dev(card);
1589                         btmrvl_remove_card(card->priv);
1590                 }
1591         }
1592 }
1593
1594 static int btmrvl_sdio_suspend(struct device *dev)
1595 {
1596         struct sdio_func *func = dev_to_sdio_func(dev);
1597         struct btmrvl_sdio_card *card;
1598         struct btmrvl_private *priv;
1599         mmc_pm_flag_t pm_flags;
1600         struct hci_dev *hcidev;
1601
1602         if (func) {
1603                 pm_flags = sdio_get_host_pm_caps(func);
1604                 BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func),
1605                        pm_flags);
1606                 if (!(pm_flags & MMC_PM_KEEP_POWER)) {
1607                         BT_ERR("%s: cannot remain alive while suspended",
1608                                sdio_func_id(func));
1609                         return -ENOSYS;
1610                 }
1611                 card = sdio_get_drvdata(func);
1612                 if (!card || !card->priv) {
1613                         BT_ERR("card or priv structure is not valid");
1614                         return 0;
1615                 }
1616         } else {
1617                 BT_ERR("sdio_func is not specified");
1618                 return 0;
1619         }
1620
1621         /* Enable platform specific wakeup interrupt */
1622         if (card->plt_wake_cfg && card->plt_wake_cfg->irq_bt >= 0) {
1623                 card->plt_wake_cfg->wake_by_bt = false;
1624                 enable_irq(card->plt_wake_cfg->irq_bt);
1625                 enable_irq_wake(card->plt_wake_cfg->irq_bt);
1626         }
1627
1628         priv = card->priv;
1629         priv->adapter->is_suspending = true;
1630         hcidev = priv->btmrvl_dev.hcidev;
1631         BT_DBG("%s: SDIO suspend", hcidev->name);
1632         hci_suspend_dev(hcidev);
1633
1634         if (priv->adapter->hs_state != HS_ACTIVATED) {
1635                 if (btmrvl_enable_hs(priv)) {
1636                         BT_ERR("HS not activated, suspend failed!");
1637                         /* Disable platform specific wakeup interrupt */
1638                         if (card->plt_wake_cfg &&
1639                             card->plt_wake_cfg->irq_bt >= 0) {
1640                                 disable_irq_wake(card->plt_wake_cfg->irq_bt);
1641                                 disable_irq(card->plt_wake_cfg->irq_bt);
1642                         }
1643
1644                         priv->adapter->is_suspending = false;
1645                         return -EBUSY;
1646                 }
1647         }
1648
1649         priv->adapter->is_suspending = false;
1650         priv->adapter->is_suspended = true;
1651
1652         /* We will keep the power when hs enabled successfully */
1653         if (priv->adapter->hs_state == HS_ACTIVATED) {
1654                 BT_DBG("suspend with MMC_PM_KEEP_POWER");
1655                 return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1656         }
1657
1658         BT_DBG("suspend without MMC_PM_KEEP_POWER");
1659         return 0;
1660 }
1661
1662 static int btmrvl_sdio_resume(struct device *dev)
1663 {
1664         struct sdio_func *func = dev_to_sdio_func(dev);
1665         struct btmrvl_sdio_card *card;
1666         struct btmrvl_private *priv;
1667         mmc_pm_flag_t pm_flags;
1668         struct hci_dev *hcidev;
1669
1670         if (func) {
1671                 pm_flags = sdio_get_host_pm_caps(func);
1672                 BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func),
1673                        pm_flags);
1674                 card = sdio_get_drvdata(func);
1675                 if (!card || !card->priv) {
1676                         BT_ERR("card or priv structure is not valid");
1677                         return 0;
1678                 }
1679         } else {
1680                 BT_ERR("sdio_func is not specified");
1681                 return 0;
1682         }
1683         priv = card->priv;
1684
1685         if (!priv->adapter->is_suspended) {
1686                 BT_DBG("device already resumed");
1687                 return 0;
1688         }
1689
1690         priv->hw_wakeup_firmware(priv);
1691         priv->adapter->hs_state = HS_DEACTIVATED;
1692         hcidev = priv->btmrvl_dev.hcidev;
1693         BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name);
1694         priv->adapter->is_suspended = false;
1695         BT_DBG("%s: SDIO resume", hcidev->name);
1696         hci_resume_dev(hcidev);
1697
1698         /* Disable platform specific wakeup interrupt */
1699         if (card->plt_wake_cfg && card->plt_wake_cfg->irq_bt >= 0) {
1700                 disable_irq_wake(card->plt_wake_cfg->irq_bt);
1701                 disable_irq(card->plt_wake_cfg->irq_bt);
1702                 if (card->plt_wake_cfg->wake_by_bt)
1703                         /* Undo our disable, since interrupt handler already
1704                          * did this.
1705                          */
1706                         enable_irq(card->plt_wake_cfg->irq_bt);
1707         }
1708
1709         return 0;
1710 }
1711
1712 static const struct dev_pm_ops btmrvl_sdio_pm_ops = {
1713         .suspend        = btmrvl_sdio_suspend,
1714         .resume         = btmrvl_sdio_resume,
1715 };
1716
1717 static struct sdio_driver bt_mrvl_sdio = {
1718         .name           = "btmrvl_sdio",
1719         .id_table       = btmrvl_sdio_ids,
1720         .probe          = btmrvl_sdio_probe,
1721         .remove         = btmrvl_sdio_remove,
1722         .drv = {
1723                 .owner = THIS_MODULE,
1724                 .coredump = btmrvl_sdio_coredump,
1725                 .pm = &btmrvl_sdio_pm_ops,
1726         }
1727 };
1728
1729 static int __init btmrvl_sdio_init_module(void)
1730 {
1731         if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
1732                 BT_ERR("SDIO Driver Registration Failed");
1733                 return -ENODEV;
1734         }
1735
1736         /* Clear the flag in case user removes the card. */
1737         user_rmmod = 0;
1738
1739         return 0;
1740 }
1741
1742 static void __exit btmrvl_sdio_exit_module(void)
1743 {
1744         /* Set the flag as user is removing this module. */
1745         user_rmmod = 1;
1746
1747         sdio_unregister_driver(&bt_mrvl_sdio);
1748 }
1749
1750 module_init(btmrvl_sdio_init_module);
1751 module_exit(btmrvl_sdio_exit_module);
1752
1753 MODULE_AUTHOR("Marvell International Ltd.");
1754 MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
1755 MODULE_VERSION(VERSION);
1756 MODULE_LICENSE("GPL v2");
1757 MODULE_FIRMWARE("mrvl/sd8688_helper.bin");
1758 MODULE_FIRMWARE("mrvl/sd8688.bin");
1759 MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
1760 MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");
1761 MODULE_FIRMWARE("mrvl/sd8887_uapsta.bin");
1762 MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin");
1763 MODULE_FIRMWARE("mrvl/sd8997_uapsta.bin");