linux/drivers/bluetooth/btmrvl_sdio.c
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   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
  37static 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 */
  69static u8 user_rmmod;
  70static u8 sdio_ireg;
  71
  72static 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};
  88static 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
 106static 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
 126static 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
 149static 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
 158static 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
 167static 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
 176static 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
 185static 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
 194static 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
 217MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
 218
 219static 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
 231static 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
 251static 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
 263static 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
 277static 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
 298static 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
 316failed:
 317        BT_ERR("FAILED! ret=%d", ret);
 318
 319        return ret;
 320}
 321
 322static 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
 345static 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
 437done:
 438        kfree(tmphlprbuf);
 439        release_firmware(fw_helper);
 440        return ret;
 441}
 442
 443static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
 444{
 445        const struct firmware *fw_firmware = NULL;
 446        const u8 *firmware = NULL;
 447        int firmwarelen, tmpfwbufsz, ret;
 448        unsigned int tries, offset;
 449        u8 base0, base1;
 450        void *tmpfwbuf = NULL;
 451        u8 *fwbuf;
 452        u16 len, blksz_dl = card->sd_blksz_fw_dl;
 453        int txlen = 0, tx_blocks = 0, count = 0;
 454
 455        ret = request_firmware(&fw_firmware, card->firmware,
 456                                                        &card->func->dev);
 457        if ((ret < 0) || !fw_firmware) {
 458                BT_ERR("request_firmware(firmware) failed, error code = %d",
 459                                                                        ret);
 460                ret = -ENOENT;
 461                goto done;
 462        }
 463
 464        firmware = fw_firmware->data;
 465        firmwarelen = fw_firmware->size;
 466
 467        BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
 468
 469        tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
 470        tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL);
 471        if (!tmpfwbuf) {
 472                BT_ERR("Unable to allocate buffer for firmware."
 473                       " Terminating download");
 474                ret = -ENOMEM;
 475                goto done;
 476        }
 477
 478        /* Ensure aligned firmware buffer */
 479        fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
 480
 481        /* Perform firmware data transfer */
 482        offset = 0;
 483        do {
 484                ret = btmrvl_sdio_poll_card_status(card,
 485                                        CARD_IO_READY | DN_LD_CARD_RDY);
 486                if (ret < 0) {
 487                        BT_ERR("FW download with helper poll status"
 488                                                " timeout @ %d", offset);
 489                        goto done;
 490                }
 491
 492                /* Check if there is more data ? */
 493                if (offset >= firmwarelen)
 494                        break;
 495
 496                for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
 497                        base0 = sdio_readb(card->func,
 498                                        card->reg->sq_read_base_addr_a0, &ret);
 499                        if (ret) {
 500                                BT_ERR("BASE0 register read failed:"
 501                                        " base0 = 0x%04X(%d)."
 502                                        " Terminating download",
 503                                        base0, base0);
 504                                ret = -EIO;
 505                                goto done;
 506                        }
 507                        base1 = sdio_readb(card->func,
 508                                        card->reg->sq_read_base_addr_a1, &ret);
 509                        if (ret) {
 510                                BT_ERR("BASE1 register read failed:"
 511                                        " base1 = 0x%04X(%d)."
 512                                        " Terminating download",
 513                                        base1, base1);
 514                                ret = -EIO;
 515                                goto done;
 516                        }
 517
 518                        len = (((u16) base1) << 8) | base0;
 519                        if (len)
 520                                break;
 521
 522                        udelay(10);
 523                }
 524
 525                if (!len)
 526                        break;
 527                else if (len > BTM_UPLD_SIZE) {
 528                        BT_ERR("FW download failure @%d, invalid length %d",
 529                                                                offset, len);
 530                        ret = -EINVAL;
 531                        goto done;
 532                }
 533
 534                txlen = len;
 535
 536                if (len & BIT(0)) {
 537                        count++;
 538                        if (count > MAX_WRITE_IOMEM_RETRY) {
 539                                BT_ERR("FW download failure @%d, "
 540                                        "over max retry count", offset);
 541                                ret = -EIO;
 542                                goto done;
 543                        }
 544                        BT_ERR("FW CRC error indicated by the helper: "
 545                                "len = 0x%04X, txlen = %d", len, txlen);
 546                        len &= ~BIT(0);
 547                        /* Set txlen to 0 so as to resend from same offset */
 548                        txlen = 0;
 549                } else {
 550                        count = 0;
 551
 552                        /* Last block ? */
 553                        if (firmwarelen - offset < txlen)
 554                                txlen = firmwarelen - offset;
 555
 556                        tx_blocks = DIV_ROUND_UP(txlen, blksz_dl);
 557
 558                        memcpy(fwbuf, &firmware[offset], txlen);
 559                }
 560
 561                ret = sdio_writesb(card->func, card->ioport, fwbuf,
 562                                                tx_blocks * blksz_dl);
 563
 564                if (ret < 0) {
 565                        BT_ERR("FW download, writesb(%d) failed @%d",
 566                                                        count, offset);
 567                        sdio_writeb(card->func, HOST_CMD53_FIN,
 568                                                card->reg->cfg, &ret);
 569                        if (ret)
 570                                BT_ERR("writeb failed (CFG)");
 571                }
 572
 573                offset += txlen;
 574        } while (true);
 575
 576        BT_DBG("FW download over, size %d bytes", offset);
 577
 578        ret = 0;
 579
 580done:
 581        kfree(tmpfwbuf);
 582        release_firmware(fw_firmware);
 583        return ret;
 584}
 585
 586static 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
 700exit:
 701        if (ret) {
 702                hdev->stat.err_rx++;
 703                kfree_skb(skb);
 704        }
 705
 706        return ret;
 707}
 708
 709static 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
 737static 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
 754static 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
 784static void btmrvl_sdio_interrupt(struct sdio_func *func)
 785{
 786        struct btmrvl_private *priv;
 787        struct btmrvl_sdio_card *card;
 788        ulong flags;
 789        u8 ireg = 0;
 790        int ret;
 791
 792        card = sdio_get_drvdata(func);
 793        if (!card || !card->priv) {
 794                BT_ERR("sbi_interrupt(%p) card or priv is NULL, card=%p",
 795                       func, card);
 796                return;
 797        }
 798
 799        priv = card->priv;
 800
 801        if (card->reg->int_read_to_clear)
 802                ret = btmrvl_sdio_read_to_clear(card, &ireg);
 803        else
 804                ret = btmrvl_sdio_write_to_clear(card, &ireg);
 805
 806        if (ret)
 807                return;
 808
 809        spin_lock_irqsave(&priv->driver_lock, flags);
 810        sdio_ireg |= ireg;
 811        spin_unlock_irqrestore(&priv->driver_lock, flags);
 812
 813        btmrvl_interrupt(priv);
 814}
 815
 816static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
 817{
 818        struct sdio_func *func;
 819        u8 reg;
 820        int ret = 0;
 821
 822        if (!card || !card->func) {
 823                BT_ERR("Error: card or function is NULL!");
 824                ret = -EINVAL;
 825                goto failed;
 826        }
 827
 828        func = card->func;
 829
 830        sdio_claim_host(func);
 831
 832        ret = sdio_enable_func(func);
 833        if (ret) {
 834                BT_ERR("sdio_enable_func() failed: ret=%d", ret);
 835                ret = -EIO;
 836                goto release_host;
 837        }
 838
 839        ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
 840        if (ret) {
 841                BT_ERR("sdio_claim_irq failed: ret=%d", ret);
 842                ret = -EIO;
 843                goto disable_func;
 844        }
 845
 846        ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
 847        if (ret) {
 848                BT_ERR("cannot set SDIO block size");
 849                ret = -EIO;
 850                goto release_irq;
 851        }
 852
 853        reg = sdio_readb(func, card->reg->io_port_0, &ret);
 854        if (ret < 0) {
 855                ret = -EIO;
 856                goto release_irq;
 857        }
 858
 859        card->ioport = reg;
 860
 861        reg = sdio_readb(func, card->reg->io_port_1, &ret);
 862        if (ret < 0) {
 863                ret = -EIO;
 864                goto release_irq;
 865        }
 866
 867        card->ioport |= (reg << 8);
 868
 869        reg = sdio_readb(func, card->reg->io_port_2, &ret);
 870        if (ret < 0) {
 871                ret = -EIO;
 872                goto release_irq;
 873        }
 874
 875        card->ioport |= (reg << 16);
 876
 877        BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
 878
 879        if (card->reg->int_read_to_clear) {
 880                reg = sdio_readb(func, card->reg->host_int_rsr, &ret);
 881                if (ret < 0) {
 882                        ret = -EIO;
 883                        goto release_irq;
 884                }
 885                sdio_writeb(func, reg | 0x3f, card->reg->host_int_rsr, &ret);
 886                if (ret < 0) {
 887                        ret = -EIO;
 888                        goto release_irq;
 889                }
 890
 891                reg = sdio_readb(func, card->reg->card_misc_cfg, &ret);
 892                if (ret < 0) {
 893                        ret = -EIO;
 894                        goto release_irq;
 895                }
 896                sdio_writeb(func, reg | 0x10, card->reg->card_misc_cfg, &ret);
 897                if (ret < 0) {
 898                        ret = -EIO;
 899                        goto release_irq;
 900                }
 901        }
 902
 903        sdio_set_drvdata(func, card);
 904
 905        sdio_release_host(func);
 906
 907        return 0;
 908
 909release_irq:
 910        sdio_release_irq(func);
 911
 912disable_func:
 913        sdio_disable_func(func);
 914
 915release_host:
 916        sdio_release_host(func);
 917
 918failed:
 919        return ret;
 920}
 921
 922static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
 923{
 924        if (card && card->func) {
 925                sdio_claim_host(card->func);
 926                sdio_release_irq(card->func);
 927                sdio_disable_func(card->func);
 928                sdio_release_host(card->func);
 929                sdio_set_drvdata(card->func, NULL);
 930        }
 931
 932        return 0;
 933}
 934
 935static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
 936{
 937        int ret;
 938
 939        if (!card || !card->func)
 940                return -EINVAL;
 941
 942        sdio_claim_host(card->func);
 943
 944        ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
 945
 946        btmrvl_sdio_get_rx_unit(card);
 947
 948        sdio_release_host(card->func);
 949
 950        return ret;
 951}
 952
 953static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
 954{
 955        int ret;
 956
 957        if (!card || !card->func)
 958                return -EINVAL;
 959
 960        sdio_claim_host(card->func);
 961
 962        ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
 963
 964        sdio_release_host(card->func);
 965
 966        return ret;
 967}
 968
 969static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
 970                                u8 *payload, u16 nb)
 971{
 972        struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
 973        int ret = 0;
 974        int buf_block_len;
 975        int blksz;
 976        int i = 0;
 977        u8 *buf = NULL;
 978        void *tmpbuf = NULL;
 979        int tmpbufsz;
 980
 981        if (!card || !card->func) {
 982                BT_ERR("card or function is NULL!");
 983                return -EINVAL;
 984        }
 985
 986        buf = payload;
 987        if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) {
 988                tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
 989                tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
 990                if (!tmpbuf)
 991                        return -ENOMEM;
 992                buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
 993                memcpy(buf, payload, nb);
 994        }
 995
 996        blksz = SDIO_BLOCK_SIZE;
 997        buf_block_len = DIV_ROUND_UP(nb, blksz);
 998
 999        sdio_claim_host(card->func);
1000
1001        do {
1002                /* Transfer data to card */
1003                ret = sdio_writesb(card->func, card->ioport, buf,
1004                                   buf_block_len * blksz);
1005                if (ret < 0) {
1006                        i++;
1007                        BT_ERR("i=%d writesb failed: %d", i, ret);
1008                        BT_ERR("hex: %*ph", nb, payload);
1009                        ret = -EIO;
1010                        if (i > MAX_WRITE_IOMEM_RETRY)
1011                                goto exit;
1012                }
1013        } while (ret);
1014
1015        priv->btmrvl_dev.tx_dnld_rdy = false;
1016
1017exit:
1018        sdio_release_host(card->func);
1019        kfree(tmpbuf);
1020
1021        return ret;
1022}
1023
1024static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
1025{
1026        int ret;
1027        u8 fws0;
1028        int pollnum = MAX_POLL_TRIES;
1029
1030        if (!card || !card->func) {
1031                BT_ERR("card or function is NULL!");
1032                return -EINVAL;
1033        }
1034
1035        if (!btmrvl_sdio_verify_fw_download(card, 1)) {
1036                BT_DBG("Firmware already downloaded!");
1037                return 0;
1038        }
1039
1040        sdio_claim_host(card->func);
1041
1042        /* Check if other function driver is downloading the firmware */
1043        fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
1044        if (ret) {
1045                BT_ERR("Failed to read FW downloading status!");
1046                ret = -EIO;
1047                goto done;
1048        }
1049        if (fws0) {
1050                BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0);
1051
1052                /* Give other function more time to download the firmware */
1053                pollnum *= 10;
1054        } else {
1055                if (card->helper) {
1056                        ret = btmrvl_sdio_download_helper(card);
1057                        if (ret) {
1058                                BT_ERR("Failed to download helper!");
1059                                ret = -EIO;
1060                                goto done;
1061                        }
1062                }
1063
1064                if (btmrvl_sdio_download_fw_w_helper(card)) {
1065                        BT_ERR("Failed to download firmware!");
1066                        ret = -EIO;
1067                        goto done;
1068                }
1069        }
1070
1071        sdio_release_host(card->func);
1072
1073        /*
1074         * winner or not, with this test the FW synchronizes when the
1075         * module can continue its initialization
1076         */
1077        if (btmrvl_sdio_verify_fw_download(card, pollnum)) {
1078                BT_ERR("FW failed to be active in time!");
1079                return -ETIMEDOUT;
1080        }
1081
1082        return 0;
1083
1084done:
1085        sdio_release_host(card->func);
1086        return ret;
1087}
1088
1089static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
1090{
1091        struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1092        int ret = 0;
1093
1094        if (!card || !card->func) {
1095                BT_ERR("card or function is NULL!");
1096                return -EINVAL;
1097        }
1098
1099        sdio_claim_host(card->func);
1100
1101        sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret);
1102
1103        sdio_release_host(card->func);
1104
1105        BT_DBG("wake up firmware");
1106
1107        return ret;
1108}
1109
1110static void btmrvl_sdio_dump_regs(struct btmrvl_private *priv)
1111{
1112        struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1113        int ret = 0;
1114        unsigned int reg, reg_start, reg_end;
1115        char buf[256], *ptr;
1116        u8 loop, func, data;
1117        int MAX_LOOP = 2;
1118
1119        btmrvl_sdio_wakeup_fw(priv);
1120        sdio_claim_host(card->func);
1121
1122        for (loop = 0; loop < MAX_LOOP; loop++) {
1123                memset(buf, 0, sizeof(buf));
1124                ptr = buf;
1125
1126                if (loop == 0) {
1127                        /* Read the registers of SDIO function0 */
1128                        func = loop;
1129                        reg_start = 0;
1130                        reg_end = 9;
1131                } else {
1132                        func = 2;
1133                        reg_start = 0;
1134                        reg_end = 0x09;
1135                }
1136
1137                ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
1138                               func, reg_start, reg_end);
1139                for (reg = reg_start; reg <= reg_end; reg++) {
1140                        if (func == 0)
1141                                data = sdio_f0_readb(card->func, reg, &ret);
1142                        else
1143                                data = sdio_readb(card->func, reg, &ret);
1144
1145                        if (!ret) {
1146                                ptr += sprintf(ptr, "%02x ", data);
1147                        } else {
1148                                ptr += sprintf(ptr, "ERR");
1149                                break;
1150                        }
1151                }
1152
1153                BT_INFO("%s", buf);
1154        }
1155
1156        sdio_release_host(card->func);
1157}
1158
1159/* This function read/write firmware */
1160static enum
1161rdwr_status btmrvl_sdio_rdwr_firmware(struct btmrvl_private *priv,
1162                                      u8 doneflag)
1163{
1164        struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1165        int ret, tries;
1166        u8 ctrl_data = 0;
1167
1168        sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl,
1169                    &ret);
1170
1171        if (ret) {
1172                BT_ERR("SDIO write err");
1173                return RDWR_STATUS_FAILURE;
1174        }
1175
1176        for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
1177                ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
1178                                       &ret);
1179
1180                if (ret) {
1181                        BT_ERR("SDIO read err");
1182                        return RDWR_STATUS_FAILURE;
1183                }
1184
1185                if (ctrl_data == FW_DUMP_DONE)
1186                        break;
1187                if (doneflag && ctrl_data == doneflag)
1188                        return RDWR_STATUS_DONE;
1189                if (ctrl_data != FW_DUMP_HOST_READY) {
1190                        BT_INFO("The ctrl reg was changed, re-try again!");
1191                        sdio_writeb(card->func, FW_DUMP_HOST_READY,
1192                                    card->reg->fw_dump_ctrl, &ret);
1193                        if (ret) {
1194                                BT_ERR("SDIO write err");
1195                                return RDWR_STATUS_FAILURE;
1196                        }
1197                }
1198                usleep_range(100, 200);
1199        }
1200
1201        if (ctrl_data == FW_DUMP_HOST_READY) {
1202                BT_ERR("Fail to pull ctrl_data");
1203                return RDWR_STATUS_FAILURE;
1204        }
1205
1206        return RDWR_STATUS_SUCCESS;
1207}
1208
1209/* This function dump sdio register and memory data */
1210static void btmrvl_sdio_dump_firmware(struct btmrvl_private *priv)
1211{
1212        struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1213        int ret = 0;
1214        unsigned int reg, reg_start, reg_end;
1215        enum rdwr_status stat;
1216        u8 *dbg_ptr, *end_ptr, *fw_dump_data, *fw_dump_ptr;
1217        u8 dump_num, idx, i, read_reg, doneflag = 0;
1218        u32 memory_size, fw_dump_len = 0;
1219
1220        /* dump sdio register first */
1221        btmrvl_sdio_dump_regs(priv);
1222
1223        if (!card->supports_fw_dump) {
1224                BT_ERR("Firmware dump not supported for this card!");
1225                return;
1226        }
1227
1228        for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
1229                struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1230
1231                if (entry->mem_ptr) {
1232                        vfree(entry->mem_ptr);
1233                        entry->mem_ptr = NULL;
1234                }
1235                entry->mem_size = 0;
1236        }
1237
1238        btmrvl_sdio_wakeup_fw(priv);
1239        sdio_claim_host(card->func);
1240
1241        BT_INFO("== btmrvl firmware dump start ==");
1242
1243        stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1244        if (stat == RDWR_STATUS_FAILURE)
1245                goto done;
1246
1247        reg = card->reg->fw_dump_start;
1248        /* Read the number of the memories which will dump */
1249        dump_num = sdio_readb(card->func, reg, &ret);
1250
1251        if (ret) {
1252                BT_ERR("SDIO read memory length err");
1253                goto done;
1254        }
1255
1256        /* Read the length of every memory which will dump */
1257        for (idx = 0; idx < dump_num; idx++) {
1258                struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1259
1260                stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1261                if (stat == RDWR_STATUS_FAILURE)
1262                        goto done;
1263
1264                memory_size = 0;
1265                reg = card->reg->fw_dump_start;
1266                for (i = 0; i < 4; i++) {
1267                        read_reg = sdio_readb(card->func, reg, &ret);
1268                        if (ret) {
1269                                BT_ERR("SDIO read err");
1270                                goto done;
1271                        }
1272                        memory_size |= (read_reg << i*8);
1273                        reg++;
1274                }
1275
1276                if (memory_size == 0) {
1277                        BT_INFO("Firmware dump finished!");
1278                        break;
1279                }
1280
1281                BT_INFO("%s_SIZE=0x%x", entry->mem_name, memory_size);
1282                entry->mem_ptr = vzalloc(memory_size + 1);
1283                entry->mem_size = memory_size;
1284                if (!entry->mem_ptr) {
1285                        BT_ERR("Vzalloc %s failed", entry->mem_name);
1286                        goto done;
1287                }
1288
1289                fw_dump_len += (strlen("========Start dump ") +
1290                                strlen(entry->mem_name) +
1291                                strlen("========\n") +
1292                                (memory_size + 1) +
1293                                strlen("\n========End dump========\n"));
1294
1295                dbg_ptr = entry->mem_ptr;
1296                end_ptr = dbg_ptr + memory_size;
1297
1298                doneflag = entry->done_flag;
1299                BT_INFO("Start %s output, please wait...",
1300                        entry->mem_name);
1301
1302                do {
1303                        stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1304                        if (stat == RDWR_STATUS_FAILURE)
1305                                goto done;
1306
1307                        reg_start = card->reg->fw_dump_start;
1308                        reg_end = card->reg->fw_dump_end;
1309                        for (reg = reg_start; reg <= reg_end; reg++) {
1310                                *dbg_ptr = sdio_readb(card->func, reg, &ret);
1311                                if (ret) {
1312                                        BT_ERR("SDIO read err");
1313                                        goto done;
1314                                }
1315                                if (dbg_ptr < end_ptr)
1316                                        dbg_ptr++;
1317                                else
1318                                        BT_ERR("Allocated buffer not enough");
1319                        }
1320
1321                        if (stat != RDWR_STATUS_DONE) {
1322                                continue;
1323                        } else {
1324                                BT_INFO("%s done: size=0x%tx",
1325                                        entry->mem_name,
1326                                        dbg_ptr - entry->mem_ptr);
1327                                break;
1328                        }
1329                } while (1);
1330        }
1331
1332        BT_INFO("== btmrvl firmware dump end ==");
1333
1334done:
1335        sdio_release_host(card->func);
1336
1337        if (fw_dump_len == 0)
1338                return;
1339
1340        fw_dump_data = vzalloc(fw_dump_len+1);
1341        if (!fw_dump_data) {
1342                BT_ERR("Vzalloc fw_dump_data fail!");
1343                return;
1344        }
1345        fw_dump_ptr = fw_dump_data;
1346
1347        /* Dump all the memory data into single file, a userspace script will
1348           be used to split all the memory data to multiple files*/
1349        BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump start");
1350        for (idx = 0; idx < dump_num; idx++) {
1351                struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1352
1353                if (entry->mem_ptr) {
1354                        strcpy(fw_dump_ptr, "========Start dump ");
1355                        fw_dump_ptr += strlen("========Start dump ");
1356
1357                        strcpy(fw_dump_ptr, entry->mem_name);
1358                        fw_dump_ptr += strlen(entry->mem_name);
1359
1360                        strcpy(fw_dump_ptr, "========\n");
1361                        fw_dump_ptr += strlen("========\n");
1362
1363                        memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1364                        fw_dump_ptr += entry->mem_size;
1365
1366                        strcpy(fw_dump_ptr, "\n========End dump========\n");
1367                        fw_dump_ptr += strlen("\n========End dump========\n");
1368
1369                        vfree(mem_type_mapping_tbl[idx].mem_ptr);
1370                        mem_type_mapping_tbl[idx].mem_ptr = NULL;
1371                }
1372        }
1373
1374        /* fw_dump_data will be free in device coredump release function
1375           after 5 min*/
1376        dev_coredumpv(&priv->btmrvl_dev.hcidev->dev, fw_dump_data,
1377                      fw_dump_len, GFP_KERNEL);
1378        BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump end");
1379}
1380
1381static int btmrvl_sdio_probe(struct sdio_func *func,
1382                                        const struct sdio_device_id *id)
1383{
1384        int ret = 0;
1385        struct btmrvl_private *priv = NULL;
1386        struct btmrvl_sdio_card *card = NULL;
1387
1388        BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
1389                        id->vendor, id->device, id->class, func->num);
1390
1391        card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
1392        if (!card)
1393                return -ENOMEM;
1394
1395        card->func = func;
1396
1397        if (id->driver_data) {
1398                struct btmrvl_sdio_device *data = (void *) id->driver_data;
1399                card->helper = data->helper;
1400                card->firmware = data->firmware;
1401                card->reg = data->reg;
1402                card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
1403                card->support_pscan_win_report = data->support_pscan_win_report;
1404                card->supports_fw_dump = data->supports_fw_dump;
1405        }
1406
1407        if (btmrvl_sdio_register_dev(card) < 0) {
1408                BT_ERR("Failed to register BT device!");
1409                return -ENODEV;
1410        }
1411
1412        /* Disable the interrupts on the card */
1413        btmrvl_sdio_disable_host_int(card);
1414
1415        if (btmrvl_sdio_download_fw(card)) {
1416                BT_ERR("Downloading firmware failed!");
1417                ret = -ENODEV;
1418                goto unreg_dev;
1419        }
1420
1421        btmrvl_sdio_enable_host_int(card);
1422
1423        priv = btmrvl_add_card(card);
1424        if (!priv) {
1425                BT_ERR("Initializing card failed!");
1426                ret = -ENODEV;
1427                goto disable_host_int;
1428        }
1429
1430        card->priv = priv;
1431
1432        /* Initialize the interface specific function pointers */
1433        priv->hw_host_to_card = btmrvl_sdio_host_to_card;
1434        priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
1435        priv->hw_process_int_status = btmrvl_sdio_process_int_status;
1436        priv->firmware_dump = btmrvl_sdio_dump_firmware;
1437
1438        if (btmrvl_register_hdev(priv)) {
1439                BT_ERR("Register hdev failed!");
1440                ret = -ENODEV;
1441                goto disable_host_int;
1442        }
1443
1444        return 0;
1445
1446disable_host_int:
1447        btmrvl_sdio_disable_host_int(card);
1448unreg_dev:
1449        btmrvl_sdio_unregister_dev(card);
1450        return ret;
1451}
1452
1453static void btmrvl_sdio_remove(struct sdio_func *func)
1454{
1455        struct btmrvl_sdio_card *card;
1456
1457        if (func) {
1458                card = sdio_get_drvdata(func);
1459                if (card) {
1460                        /* Send SHUTDOWN command & disable interrupt
1461                         * if user removes the module.
1462                         */
1463                        if (user_rmmod) {
1464                                btmrvl_send_module_cfg_cmd(card->priv,
1465                                                        MODULE_SHUTDOWN_REQ);
1466                                btmrvl_sdio_disable_host_int(card);
1467                        }
1468                        BT_DBG("unregester dev");
1469                        btmrvl_sdio_unregister_dev(card);
1470                        btmrvl_remove_card(card->priv);
1471                }
1472        }
1473}
1474
1475static int btmrvl_sdio_suspend(struct device *dev)
1476{
1477        struct sdio_func *func = dev_to_sdio_func(dev);
1478        struct btmrvl_sdio_card *card;
1479        struct btmrvl_private *priv;
1480        mmc_pm_flag_t pm_flags;
1481        struct hci_dev *hcidev;
1482
1483        if (func) {
1484                pm_flags = sdio_get_host_pm_caps(func);
1485                BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func),
1486                       pm_flags);
1487                if (!(pm_flags & MMC_PM_KEEP_POWER)) {
1488                        BT_ERR("%s: cannot remain alive while suspended",
1489                               sdio_func_id(func));
1490                        return -ENOSYS;
1491                }
1492                card = sdio_get_drvdata(func);
1493                if (!card || !card->priv) {
1494                        BT_ERR("card or priv structure is not valid");
1495                        return 0;
1496                }
1497        } else {
1498                BT_ERR("sdio_func is not specified");
1499                return 0;
1500        }
1501
1502        priv = card->priv;
1503        hcidev = priv->btmrvl_dev.hcidev;
1504        BT_DBG("%s: SDIO suspend", hcidev->name);
1505        hci_suspend_dev(hcidev);
1506        skb_queue_purge(&priv->adapter->tx_queue);
1507
1508        if (priv->adapter->hs_state != HS_ACTIVATED) {
1509                if (btmrvl_enable_hs(priv)) {
1510                        BT_ERR("HS not actived, suspend failed!");
1511                        return -EBUSY;
1512                }
1513        }
1514
1515        priv->adapter->is_suspended = true;
1516
1517        /* We will keep the power when hs enabled successfully */
1518        if (priv->adapter->hs_state == HS_ACTIVATED) {
1519                BT_DBG("suspend with MMC_PM_KEEP_POWER");
1520                return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1521        } else {
1522                BT_DBG("suspend without MMC_PM_KEEP_POWER");
1523                return 0;
1524        }
1525}
1526
1527static int btmrvl_sdio_resume(struct device *dev)
1528{
1529        struct sdio_func *func = dev_to_sdio_func(dev);
1530        struct btmrvl_sdio_card *card;
1531        struct btmrvl_private *priv;
1532        mmc_pm_flag_t pm_flags;
1533        struct hci_dev *hcidev;
1534
1535        if (func) {
1536                pm_flags = sdio_get_host_pm_caps(func);
1537                BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func),
1538                       pm_flags);
1539                card = sdio_get_drvdata(func);
1540                if (!card || !card->priv) {
1541                        BT_ERR("card or priv structure is not valid");
1542                        return 0;
1543                }
1544        } else {
1545                BT_ERR("sdio_func is not specified");
1546                return 0;
1547        }
1548        priv = card->priv;
1549
1550        if (!priv->adapter->is_suspended) {
1551                BT_DBG("device already resumed");
1552                return 0;
1553        }
1554
1555        priv->hw_wakeup_firmware(priv);
1556        priv->adapter->hs_state = HS_DEACTIVATED;
1557        hcidev = priv->btmrvl_dev.hcidev;
1558        BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name);
1559        priv->adapter->is_suspended = false;
1560        BT_DBG("%s: SDIO resume", hcidev->name);
1561        hci_resume_dev(hcidev);
1562
1563        return 0;
1564}
1565
1566static const struct dev_pm_ops btmrvl_sdio_pm_ops = {
1567        .suspend        = btmrvl_sdio_suspend,
1568        .resume         = btmrvl_sdio_resume,
1569};
1570
1571static struct sdio_driver bt_mrvl_sdio = {
1572        .name           = "btmrvl_sdio",
1573        .id_table       = btmrvl_sdio_ids,
1574        .probe          = btmrvl_sdio_probe,
1575        .remove         = btmrvl_sdio_remove,
1576        .drv = {
1577                .owner = THIS_MODULE,
1578                .pm = &btmrvl_sdio_pm_ops,
1579        }
1580};
1581
1582static int __init btmrvl_sdio_init_module(void)
1583{
1584        if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
1585                BT_ERR("SDIO Driver Registration Failed");
1586                return -ENODEV;
1587        }
1588
1589        /* Clear the flag in case user removes the card. */
1590        user_rmmod = 0;
1591
1592        return 0;
1593}
1594
1595static void __exit btmrvl_sdio_exit_module(void)
1596{
1597        /* Set the flag as user is removing this module. */
1598        user_rmmod = 1;
1599
1600        sdio_unregister_driver(&bt_mrvl_sdio);
1601}
1602
1603module_init(btmrvl_sdio_init_module);
1604module_exit(btmrvl_sdio_exit_module);
1605
1606MODULE_AUTHOR("Marvell International Ltd.");
1607MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
1608MODULE_VERSION(VERSION);
1609MODULE_LICENSE("GPL v2");
1610MODULE_FIRMWARE("mrvl/sd8688_helper.bin");
1611MODULE_FIRMWARE("mrvl/sd8688.bin");
1612MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
1613MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");
1614MODULE_FIRMWARE("mrvl/sd8887_uapsta.bin");
1615MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin");
1616
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