1 /** 2 * Marvell BT-over-SDIO driver: SDIO interface related functions. 3 * 4 * Copyright (C) 2009, Marvell International Ltd. 5 * 6 * This software file (the "File") is distributed by Marvell International 7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991 8 * (the "License"). You may use, redistribute and/or modify this File in 9 * accordance with the terms and conditions of the License, a copy of which 10 * is available by writing to the Free Software Foundation, Inc., 11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the 12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. 13 * 14 * 15 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE 17 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about 18 * this warranty disclaimer. 19 **/ 20 21 #include <linux/firmware.h> 22 #include <linux/slab.h> 23 24 #include <linux/mmc/sdio_ids.h> 25 #include <linux/mmc/sdio_func.h> 26 #include <linux/module.h> 27 #include <linux/devcoredump.h> 28 29 #include <net/bluetooth/bluetooth.h> 30 #include <net/bluetooth/hci_core.h> 31 32 #include "btmrvl_drv.h" 33 #include "btmrvl_sdio.h" 34 35 #define VERSION "1.0" 36 37 static struct memory_type_mapping mem_type_mapping_tbl[] = { 38 {"ITCM", NULL, 0, 0xF0}, 39 {"DTCM", NULL, 0, 0xF1}, 40 {"SQRAM", NULL, 0, 0xF2}, 41 {"APU", NULL, 0, 0xF3}, 42 {"CIU", NULL, 0, 0xF4}, 43 {"ICU", NULL, 0, 0xF5}, 44 {"MAC", NULL, 0, 0xF6}, 45 {"EXT7", NULL, 0, 0xF7}, 46 {"EXT8", NULL, 0, 0xF8}, 47 {"EXT9", NULL, 0, 0xF9}, 48 {"EXT10", NULL, 0, 0xFA}, 49 {"EXT11", NULL, 0, 0xFB}, 50 {"EXT12", NULL, 0, 0xFC}, 51 {"EXT13", NULL, 0, 0xFD}, 52 {"EXTLAST", NULL, 0, 0xFE}, 53 }; 54 55 /* The btmrvl_sdio_remove() callback function is called 56 * when user removes this module from kernel space or ejects 57 * the card from the slot. The driver handles these 2 cases 58 * differently. 59 * If the user is removing the module, a MODULE_SHUTDOWN_REQ 60 * command is sent to firmware and interrupt will be disabled. 61 * If the card is removed, there is no need to send command 62 * or disable interrupt. 63 * 64 * The variable 'user_rmmod' is used to distinguish these two 65 * scenarios. This flag is initialized as FALSE in case the card 66 * is removed, and will be set to TRUE for module removal when 67 * module_exit function is called. 68 */ 69 static u8 user_rmmod; 70 static u8 sdio_ireg; 71 72 static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = { 73 .cfg = 0x03, 74 .host_int_mask = 0x04, 75 .host_intstatus = 0x05, 76 .card_status = 0x20, 77 .sq_read_base_addr_a0 = 0x10, 78 .sq_read_base_addr_a1 = 0x11, 79 .card_fw_status0 = 0x40, 80 .card_fw_status1 = 0x41, 81 .card_rx_len = 0x42, 82 .card_rx_unit = 0x43, 83 .io_port_0 = 0x00, 84 .io_port_1 = 0x01, 85 .io_port_2 = 0x02, 86 .int_read_to_clear = false, 87 }; 88 static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = { 89 .cfg = 0x00, 90 .host_int_mask = 0x02, 91 .host_intstatus = 0x03, 92 .card_status = 0x30, 93 .sq_read_base_addr_a0 = 0x40, 94 .sq_read_base_addr_a1 = 0x41, 95 .card_revision = 0x5c, 96 .card_fw_status0 = 0x60, 97 .card_fw_status1 = 0x61, 98 .card_rx_len = 0x62, 99 .card_rx_unit = 0x63, 100 .io_port_0 = 0x78, 101 .io_port_1 = 0x79, 102 .io_port_2 = 0x7a, 103 .int_read_to_clear = false, 104 }; 105 106 static const struct btmrvl_sdio_card_reg btmrvl_reg_8887 = { 107 .cfg = 0x00, 108 .host_int_mask = 0x08, 109 .host_intstatus = 0x0C, 110 .card_status = 0x5C, 111 .sq_read_base_addr_a0 = 0x6C, 112 .sq_read_base_addr_a1 = 0x6D, 113 .card_revision = 0xC8, 114 .card_fw_status0 = 0x88, 115 .card_fw_status1 = 0x89, 116 .card_rx_len = 0x8A, 117 .card_rx_unit = 0x8B, 118 .io_port_0 = 0xE4, 119 .io_port_1 = 0xE5, 120 .io_port_2 = 0xE6, 121 .int_read_to_clear = true, 122 .host_int_rsr = 0x04, 123 .card_misc_cfg = 0xD8, 124 }; 125 126 static const struct btmrvl_sdio_card_reg btmrvl_reg_8897 = { 127 .cfg = 0x00, 128 .host_int_mask = 0x02, 129 .host_intstatus = 0x03, 130 .card_status = 0x50, 131 .sq_read_base_addr_a0 = 0x60, 132 .sq_read_base_addr_a1 = 0x61, 133 .card_revision = 0xbc, 134 .card_fw_status0 = 0xc0, 135 .card_fw_status1 = 0xc1, 136 .card_rx_len = 0xc2, 137 .card_rx_unit = 0xc3, 138 .io_port_0 = 0xd8, 139 .io_port_1 = 0xd9, 140 .io_port_2 = 0xda, 141 .int_read_to_clear = true, 142 .host_int_rsr = 0x01, 143 .card_misc_cfg = 0xcc, 144 .fw_dump_ctrl = 0xe2, 145 .fw_dump_start = 0xe3, 146 .fw_dump_end = 0xea, 147 }; 148 149 static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = { 150 .helper = "mrvl/sd8688_helper.bin", 151 .firmware = "mrvl/sd8688.bin", 152 .reg = &btmrvl_reg_8688, 153 .support_pscan_win_report = false, 154 .sd_blksz_fw_dl = 64, 155 .supports_fw_dump = false, 156 }; 157 158 static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = { 159 .helper = NULL, 160 .firmware = "mrvl/sd8787_uapsta.bin", 161 .reg = &btmrvl_reg_87xx, 162 .support_pscan_win_report = false, 163 .sd_blksz_fw_dl = 256, 164 .supports_fw_dump = false, 165 }; 166 167 static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = { 168 .helper = NULL, 169 .firmware = "mrvl/sd8797_uapsta.bin", 170 .reg = &btmrvl_reg_87xx, 171 .support_pscan_win_report = false, 172 .sd_blksz_fw_dl = 256, 173 .supports_fw_dump = false, 174 }; 175 176 static const struct btmrvl_sdio_device btmrvl_sdio_sd8887 = { 177 .helper = NULL, 178 .firmware = "mrvl/sd8887_uapsta.bin", 179 .reg = &btmrvl_reg_8887, 180 .support_pscan_win_report = true, 181 .sd_blksz_fw_dl = 256, 182 .supports_fw_dump = false, 183 }; 184 185 static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = { 186 .helper = NULL, 187 .firmware = "mrvl/sd8897_uapsta.bin", 188 .reg = &btmrvl_reg_8897, 189 .support_pscan_win_report = true, 190 .sd_blksz_fw_dl = 256, 191 .supports_fw_dump = true, 192 }; 193 194 static const struct sdio_device_id btmrvl_sdio_ids[] = { 195 /* Marvell SD8688 Bluetooth device */ 196 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105), 197 .driver_data = (unsigned long) &btmrvl_sdio_sd8688 }, 198 /* Marvell SD8787 Bluetooth device */ 199 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A), 200 .driver_data = (unsigned long) &btmrvl_sdio_sd8787 }, 201 /* Marvell SD8787 Bluetooth AMP device */ 202 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911B), 203 .driver_data = (unsigned long) &btmrvl_sdio_sd8787 }, 204 /* Marvell SD8797 Bluetooth device */ 205 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A), 206 .driver_data = (unsigned long) &btmrvl_sdio_sd8797 }, 207 /* Marvell SD8887 Bluetooth device */ 208 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9136), 209 .driver_data = (unsigned long)&btmrvl_sdio_sd8887 }, 210 /* Marvell SD8897 Bluetooth device */ 211 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912E), 212 .driver_data = (unsigned long) &btmrvl_sdio_sd8897 }, 213 214 { } /* Terminating entry */ 215 }; 216 217 MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids); 218 219 static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card) 220 { 221 u8 reg; 222 int ret; 223 224 reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret); 225 if (!ret) 226 card->rx_unit = reg; 227 228 return ret; 229 } 230 231 static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat) 232 { 233 u8 fws0, fws1; 234 int ret; 235 236 *dat = 0; 237 238 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret); 239 if (ret) 240 return -EIO; 241 242 fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret); 243 if (ret) 244 return -EIO; 245 246 *dat = (((u16) fws1) << 8) | fws0; 247 248 return 0; 249 } 250 251 static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat) 252 { 253 u8 reg; 254 int ret; 255 256 reg = sdio_readb(card->func, card->reg->card_rx_len, &ret); 257 if (!ret) 258 *dat = (u16) reg << card->rx_unit; 259 260 return ret; 261 } 262 263 static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card, 264 u8 mask) 265 { 266 int ret; 267 268 sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret); 269 if (ret) { 270 BT_ERR("Unable to enable the host interrupt!"); 271 ret = -EIO; 272 } 273 274 return ret; 275 } 276 277 static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card, 278 u8 mask) 279 { 280 u8 host_int_mask; 281 int ret; 282 283 host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret); 284 if (ret) 285 return -EIO; 286 287 host_int_mask &= ~mask; 288 289 sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret); 290 if (ret < 0) { 291 BT_ERR("Unable to disable the host interrupt!"); 292 return -EIO; 293 } 294 295 return 0; 296 } 297 298 static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits) 299 { 300 unsigned int tries; 301 u8 status; 302 int ret; 303 304 for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) { 305 status = sdio_readb(card->func, card->reg->card_status, &ret); 306 if (ret) 307 goto failed; 308 if ((status & bits) == bits) 309 return ret; 310 311 udelay(1); 312 } 313 314 ret = -ETIMEDOUT; 315 316 failed: 317 BT_ERR("FAILED! ret=%d", ret); 318 319 return ret; 320 } 321 322 static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card, 323 int pollnum) 324 { 325 u16 firmwarestat; 326 int tries, ret; 327 328 /* Wait for firmware to become ready */ 329 for (tries = 0; tries < pollnum; tries++) { 330 sdio_claim_host(card->func); 331 ret = btmrvl_sdio_read_fw_status(card, &firmwarestat); 332 sdio_release_host(card->func); 333 if (ret < 0) 334 continue; 335 336 if (firmwarestat == FIRMWARE_READY) 337 return 0; 338 339 msleep(10); 340 } 341 342 return -ETIMEDOUT; 343 } 344 345 static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card) 346 { 347 const struct firmware *fw_helper = NULL; 348 const u8 *helper = NULL; 349 int ret; 350 void *tmphlprbuf = NULL; 351 int tmphlprbufsz, hlprblknow, helperlen; 352 u8 *helperbuf; 353 u32 tx_len; 354 355 ret = request_firmware(&fw_helper, card->helper, 356 &card->func->dev); 357 if ((ret < 0) || !fw_helper) { 358 BT_ERR("request_firmware(helper) failed, error code = %d", 359 ret); 360 ret = -ENOENT; 361 goto done; 362 } 363 364 helper = fw_helper->data; 365 helperlen = fw_helper->size; 366 367 BT_DBG("Downloading helper image (%d bytes), block size %d bytes", 368 helperlen, SDIO_BLOCK_SIZE); 369 370 tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); 371 372 tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL); 373 if (!tmphlprbuf) { 374 BT_ERR("Unable to allocate buffer for helper." 375 " Terminating download"); 376 ret = -ENOMEM; 377 goto done; 378 } 379 380 helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN); 381 382 /* Perform helper data transfer */ 383 tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE) 384 - SDIO_HEADER_LEN; 385 hlprblknow = 0; 386 387 do { 388 ret = btmrvl_sdio_poll_card_status(card, 389 CARD_IO_READY | DN_LD_CARD_RDY); 390 if (ret < 0) { 391 BT_ERR("Helper download poll status timeout @ %d", 392 hlprblknow); 393 goto done; 394 } 395 396 /* Check if there is more data? */ 397 if (hlprblknow >= helperlen) 398 break; 399 400 if (helperlen - hlprblknow < tx_len) 401 tx_len = helperlen - hlprblknow; 402 403 /* Little-endian */ 404 helperbuf[0] = ((tx_len & 0x000000ff) >> 0); 405 helperbuf[1] = ((tx_len & 0x0000ff00) >> 8); 406 helperbuf[2] = ((tx_len & 0x00ff0000) >> 16); 407 helperbuf[3] = ((tx_len & 0xff000000) >> 24); 408 409 memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow], 410 tx_len); 411 412 /* Now send the data */ 413 ret = sdio_writesb(card->func, card->ioport, helperbuf, 414 FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE); 415 if (ret < 0) { 416 BT_ERR("IO error during helper download @ %d", 417 hlprblknow); 418 goto done; 419 } 420 421 hlprblknow += tx_len; 422 } while (true); 423 424 BT_DBG("Transferring helper image EOF block"); 425 426 memset(helperbuf, 0x0, SDIO_BLOCK_SIZE); 427 428 ret = sdio_writesb(card->func, card->ioport, helperbuf, 429 SDIO_BLOCK_SIZE); 430 if (ret < 0) { 431 BT_ERR("IO error in writing helper image EOF block"); 432 goto done; 433 } 434 435 ret = 0; 436 437 done: 438 kfree(tmphlprbuf); 439 release_firmware(fw_helper); 440 return ret; 441 } 442 443 static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card) 444 { 445 const struct firmware *fw_firmware = NULL; 446 const u8 *firmware = NULL; 447 int firmwarelen, tmpfwbufsz, ret; 448 unsigned int tries, offset; 449 u8 base0, base1; 450 void *tmpfwbuf = NULL; 451 u8 *fwbuf; 452 u16 len, blksz_dl = card->sd_blksz_fw_dl; 453 int txlen = 0, tx_blocks = 0, count = 0; 454 455 ret = request_firmware(&fw_firmware, card->firmware, 456 &card->func->dev); 457 if ((ret < 0) || !fw_firmware) { 458 BT_ERR("request_firmware(firmware) failed, error code = %d", 459 ret); 460 ret = -ENOENT; 461 goto done; 462 } 463 464 firmware = fw_firmware->data; 465 firmwarelen = fw_firmware->size; 466 467 BT_DBG("Downloading FW image (%d bytes)", firmwarelen); 468 469 tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); 470 tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL); 471 if (!tmpfwbuf) { 472 BT_ERR("Unable to allocate buffer for firmware." 473 " Terminating download"); 474 ret = -ENOMEM; 475 goto done; 476 } 477 478 /* Ensure aligned firmware buffer */ 479 fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN); 480 481 /* Perform firmware data transfer */ 482 offset = 0; 483 do { 484 ret = btmrvl_sdio_poll_card_status(card, 485 CARD_IO_READY | DN_LD_CARD_RDY); 486 if (ret < 0) { 487 BT_ERR("FW download with helper poll status" 488 " timeout @ %d", offset); 489 goto done; 490 } 491 492 /* Check if there is more data ? */ 493 if (offset >= firmwarelen) 494 break; 495 496 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 497 base0 = sdio_readb(card->func, 498 card->reg->sq_read_base_addr_a0, &ret); 499 if (ret) { 500 BT_ERR("BASE0 register read failed:" 501 " base0 = 0x%04X(%d)." 502 " Terminating download", 503 base0, base0); 504 ret = -EIO; 505 goto done; 506 } 507 base1 = sdio_readb(card->func, 508 card->reg->sq_read_base_addr_a1, &ret); 509 if (ret) { 510 BT_ERR("BASE1 register read failed:" 511 " base1 = 0x%04X(%d)." 512 " Terminating download", 513 base1, base1); 514 ret = -EIO; 515 goto done; 516 } 517 518 len = (((u16) base1) << 8) | base0; 519 if (len) 520 break; 521 522 udelay(10); 523 } 524 525 if (!len) 526 break; 527 else if (len > BTM_UPLD_SIZE) { 528 BT_ERR("FW download failure @%d, invalid length %d", 529 offset, len); 530 ret = -EINVAL; 531 goto done; 532 } 533 534 txlen = len; 535 536 if (len & BIT(0)) { 537 count++; 538 if (count > MAX_WRITE_IOMEM_RETRY) { 539 BT_ERR("FW download failure @%d, " 540 "over max retry count", offset); 541 ret = -EIO; 542 goto done; 543 } 544 BT_ERR("FW CRC error indicated by the helper: " 545 "len = 0x%04X, txlen = %d", len, txlen); 546 len &= ~BIT(0); 547 /* Set txlen to 0 so as to resend from same offset */ 548 txlen = 0; 549 } else { 550 count = 0; 551 552 /* Last block ? */ 553 if (firmwarelen - offset < txlen) 554 txlen = firmwarelen - offset; 555 556 tx_blocks = DIV_ROUND_UP(txlen, blksz_dl); 557 558 memcpy(fwbuf, &firmware[offset], txlen); 559 } 560 561 ret = sdio_writesb(card->func, card->ioport, fwbuf, 562 tx_blocks * blksz_dl); 563 564 if (ret < 0) { 565 BT_ERR("FW download, writesb(%d) failed @%d", 566 count, offset); 567 sdio_writeb(card->func, HOST_CMD53_FIN, 568 card->reg->cfg, &ret); 569 if (ret) 570 BT_ERR("writeb failed (CFG)"); 571 } 572 573 offset += txlen; 574 } while (true); 575 576 BT_INFO("FW download over, size %d bytes", offset); 577 578 ret = 0; 579 580 done: 581 kfree(tmpfwbuf); 582 release_firmware(fw_firmware); 583 return ret; 584 } 585 586 static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv) 587 { 588 u16 buf_len = 0; 589 int ret, num_blocks, blksz; 590 struct sk_buff *skb = NULL; 591 u32 type; 592 u8 *payload = NULL; 593 struct hci_dev *hdev = priv->btmrvl_dev.hcidev; 594 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; 595 596 if (!card || !card->func) { 597 BT_ERR("card or function is NULL!"); 598 ret = -EINVAL; 599 goto exit; 600 } 601 602 /* Read the length of data to be transferred */ 603 ret = btmrvl_sdio_read_rx_len(card, &buf_len); 604 if (ret < 0) { 605 BT_ERR("read rx_len failed"); 606 ret = -EIO; 607 goto exit; 608 } 609 610 blksz = SDIO_BLOCK_SIZE; 611 num_blocks = DIV_ROUND_UP(buf_len, blksz); 612 613 if (buf_len <= SDIO_HEADER_LEN 614 || (num_blocks * blksz) > ALLOC_BUF_SIZE) { 615 BT_ERR("invalid packet length: %d", buf_len); 616 ret = -EINVAL; 617 goto exit; 618 } 619 620 /* Allocate buffer */ 621 skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_ATOMIC); 622 if (skb == NULL) { 623 BT_ERR("No free skb"); 624 ret = -ENOMEM; 625 goto exit; 626 } 627 628 if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) { 629 skb_put(skb, (unsigned long) skb->data & 630 (BTSDIO_DMA_ALIGN - 1)); 631 skb_pull(skb, (unsigned long) skb->data & 632 (BTSDIO_DMA_ALIGN - 1)); 633 } 634 635 payload = skb->data; 636 637 ret = sdio_readsb(card->func, payload, card->ioport, 638 num_blocks * blksz); 639 if (ret < 0) { 640 BT_ERR("readsb failed: %d", ret); 641 ret = -EIO; 642 goto exit; 643 } 644 645 /* This is SDIO specific header length: byte[2][1][0], type: byte[3] 646 * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor) 647 */ 648 649 buf_len = payload[0]; 650 buf_len |= payload[1] << 8; 651 buf_len |= payload[2] << 16; 652 653 if (buf_len > blksz * num_blocks) { 654 BT_ERR("Skip incorrect packet: hdrlen %d buffer %d", 655 buf_len, blksz * num_blocks); 656 ret = -EIO; 657 goto exit; 658 } 659 660 type = payload[3]; 661 662 switch (type) { 663 case HCI_ACLDATA_PKT: 664 case HCI_SCODATA_PKT: 665 case HCI_EVENT_PKT: 666 bt_cb(skb)->pkt_type = type; 667 skb_put(skb, buf_len); 668 skb_pull(skb, SDIO_HEADER_LEN); 669 670 if (type == HCI_EVENT_PKT) { 671 if (btmrvl_check_evtpkt(priv, skb)) 672 hci_recv_frame(hdev, skb); 673 } else { 674 hci_recv_frame(hdev, skb); 675 } 676 677 hdev->stat.byte_rx += buf_len; 678 break; 679 680 case MRVL_VENDOR_PKT: 681 bt_cb(skb)->pkt_type = HCI_VENDOR_PKT; 682 skb_put(skb, buf_len); 683 skb_pull(skb, SDIO_HEADER_LEN); 684 685 if (btmrvl_process_event(priv, skb)) 686 hci_recv_frame(hdev, skb); 687 688 hdev->stat.byte_rx += buf_len; 689 break; 690 691 default: 692 BT_ERR("Unknown packet type:%d", type); 693 BT_ERR("hex: %*ph", blksz * num_blocks, payload); 694 695 kfree_skb(skb); 696 skb = NULL; 697 break; 698 } 699 700 exit: 701 if (ret) { 702 hdev->stat.err_rx++; 703 kfree_skb(skb); 704 } 705 706 return ret; 707 } 708 709 static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv) 710 { 711 ulong flags; 712 u8 ireg; 713 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; 714 715 spin_lock_irqsave(&priv->driver_lock, flags); 716 ireg = sdio_ireg; 717 sdio_ireg = 0; 718 spin_unlock_irqrestore(&priv->driver_lock, flags); 719 720 sdio_claim_host(card->func); 721 if (ireg & DN_LD_HOST_INT_STATUS) { 722 if (priv->btmrvl_dev.tx_dnld_rdy) 723 BT_DBG("tx_done already received: " 724 " int_status=0x%x", ireg); 725 else 726 priv->btmrvl_dev.tx_dnld_rdy = true; 727 } 728 729 if (ireg & UP_LD_HOST_INT_STATUS) 730 btmrvl_sdio_card_to_host(priv); 731 732 sdio_release_host(card->func); 733 734 return 0; 735 } 736 737 static int btmrvl_sdio_read_to_clear(struct btmrvl_sdio_card *card, u8 *ireg) 738 { 739 struct btmrvl_adapter *adapter = card->priv->adapter; 740 int ret; 741 742 ret = sdio_readsb(card->func, adapter->hw_regs, 0, SDIO_BLOCK_SIZE); 743 if (ret) { 744 BT_ERR("sdio_readsb: read int hw_regs failed: %d", ret); 745 return ret; 746 } 747 748 *ireg = adapter->hw_regs[card->reg->host_intstatus]; 749 BT_DBG("hw_regs[%#x]=%#x", card->reg->host_intstatus, *ireg); 750 751 return 0; 752 } 753 754 static int btmrvl_sdio_write_to_clear(struct btmrvl_sdio_card *card, u8 *ireg) 755 { 756 int ret; 757 758 *ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret); 759 if (ret) { 760 BT_ERR("sdio_readb: read int status failed: %d", ret); 761 return ret; 762 } 763 764 if (*ireg) { 765 /* 766 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS 767 * Clear the interrupt status register and re-enable the 768 * interrupt. 769 */ 770 BT_DBG("int_status = 0x%x", *ireg); 771 772 sdio_writeb(card->func, ~(*ireg) & (DN_LD_HOST_INT_STATUS | 773 UP_LD_HOST_INT_STATUS), 774 card->reg->host_intstatus, &ret); 775 if (ret) { 776 BT_ERR("sdio_writeb: clear int status failed: %d", ret); 777 return ret; 778 } 779 } 780 781 return 0; 782 } 783 784 static void btmrvl_sdio_interrupt(struct sdio_func *func) 785 { 786 struct btmrvl_private *priv; 787 struct btmrvl_sdio_card *card; 788 ulong flags; 789 u8 ireg = 0; 790 int ret; 791 792 card = sdio_get_drvdata(func); 793 if (!card || !card->priv) { 794 BT_ERR("sbi_interrupt(%p) card or priv is NULL, card=%p", 795 func, card); 796 return; 797 } 798 799 priv = card->priv; 800 801 if (priv->surprise_removed) 802 return; 803 804 if (card->reg->int_read_to_clear) 805 ret = btmrvl_sdio_read_to_clear(card, &ireg); 806 else 807 ret = btmrvl_sdio_write_to_clear(card, &ireg); 808 809 if (ret) 810 return; 811 812 spin_lock_irqsave(&priv->driver_lock, flags); 813 sdio_ireg |= ireg; 814 spin_unlock_irqrestore(&priv->driver_lock, flags); 815 816 btmrvl_interrupt(priv); 817 } 818 819 static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card) 820 { 821 struct sdio_func *func; 822 u8 reg; 823 int ret = 0; 824 825 if (!card || !card->func) { 826 BT_ERR("Error: card or function is NULL!"); 827 ret = -EINVAL; 828 goto failed; 829 } 830 831 func = card->func; 832 833 sdio_claim_host(func); 834 835 ret = sdio_enable_func(func); 836 if (ret) { 837 BT_ERR("sdio_enable_func() failed: ret=%d", ret); 838 ret = -EIO; 839 goto release_host; 840 } 841 842 ret = sdio_claim_irq(func, btmrvl_sdio_interrupt); 843 if (ret) { 844 BT_ERR("sdio_claim_irq failed: ret=%d", ret); 845 ret = -EIO; 846 goto disable_func; 847 } 848 849 ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE); 850 if (ret) { 851 BT_ERR("cannot set SDIO block size"); 852 ret = -EIO; 853 goto release_irq; 854 } 855 856 reg = sdio_readb(func, card->reg->io_port_0, &ret); 857 if (ret < 0) { 858 ret = -EIO; 859 goto release_irq; 860 } 861 862 card->ioport = reg; 863 864 reg = sdio_readb(func, card->reg->io_port_1, &ret); 865 if (ret < 0) { 866 ret = -EIO; 867 goto release_irq; 868 } 869 870 card->ioport |= (reg << 8); 871 872 reg = sdio_readb(func, card->reg->io_port_2, &ret); 873 if (ret < 0) { 874 ret = -EIO; 875 goto release_irq; 876 } 877 878 card->ioport |= (reg << 16); 879 880 BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport); 881 882 if (card->reg->int_read_to_clear) { 883 reg = sdio_readb(func, card->reg->host_int_rsr, &ret); 884 if (ret < 0) { 885 ret = -EIO; 886 goto release_irq; 887 } 888 sdio_writeb(func, reg | 0x3f, card->reg->host_int_rsr, &ret); 889 if (ret < 0) { 890 ret = -EIO; 891 goto release_irq; 892 } 893 894 reg = sdio_readb(func, card->reg->card_misc_cfg, &ret); 895 if (ret < 0) { 896 ret = -EIO; 897 goto release_irq; 898 } 899 sdio_writeb(func, reg | 0x10, card->reg->card_misc_cfg, &ret); 900 if (ret < 0) { 901 ret = -EIO; 902 goto release_irq; 903 } 904 } 905 906 sdio_set_drvdata(func, card); 907 908 sdio_release_host(func); 909 910 return 0; 911 912 release_irq: 913 sdio_release_irq(func); 914 915 disable_func: 916 sdio_disable_func(func); 917 918 release_host: 919 sdio_release_host(func); 920 921 failed: 922 return ret; 923 } 924 925 static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card) 926 { 927 if (card && card->func) { 928 sdio_claim_host(card->func); 929 sdio_release_irq(card->func); 930 sdio_disable_func(card->func); 931 sdio_release_host(card->func); 932 sdio_set_drvdata(card->func, NULL); 933 } 934 935 return 0; 936 } 937 938 static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card) 939 { 940 int ret; 941 942 if (!card || !card->func) 943 return -EINVAL; 944 945 sdio_claim_host(card->func); 946 947 ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE); 948 949 btmrvl_sdio_get_rx_unit(card); 950 951 sdio_release_host(card->func); 952 953 return ret; 954 } 955 956 static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card) 957 { 958 int ret; 959 960 if (!card || !card->func) 961 return -EINVAL; 962 963 sdio_claim_host(card->func); 964 965 ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE); 966 967 sdio_release_host(card->func); 968 969 return ret; 970 } 971 972 static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv, 973 u8 *payload, u16 nb) 974 { 975 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; 976 int ret = 0; 977 int buf_block_len; 978 int blksz; 979 int i = 0; 980 u8 *buf = NULL; 981 void *tmpbuf = NULL; 982 int tmpbufsz; 983 984 if (!card || !card->func) { 985 BT_ERR("card or function is NULL!"); 986 return -EINVAL; 987 } 988 989 buf = payload; 990 if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) { 991 tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN); 992 tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL); 993 if (!tmpbuf) 994 return -ENOMEM; 995 buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN); 996 memcpy(buf, payload, nb); 997 } 998 999 blksz = SDIO_BLOCK_SIZE; 1000 buf_block_len = DIV_ROUND_UP(nb, blksz); 1001 1002 sdio_claim_host(card->func); 1003 1004 do { 1005 /* Transfer data to card */ 1006 ret = sdio_writesb(card->func, card->ioport, buf, 1007 buf_block_len * blksz); 1008 if (ret < 0) { 1009 i++; 1010 BT_ERR("i=%d writesb failed: %d", i, ret); 1011 BT_ERR("hex: %*ph", nb, payload); 1012 ret = -EIO; 1013 if (i > MAX_WRITE_IOMEM_RETRY) 1014 goto exit; 1015 } 1016 } while (ret); 1017 1018 priv->btmrvl_dev.tx_dnld_rdy = false; 1019 1020 exit: 1021 sdio_release_host(card->func); 1022 kfree(tmpbuf); 1023 1024 return ret; 1025 } 1026 1027 static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card) 1028 { 1029 int ret; 1030 u8 fws0; 1031 int pollnum = MAX_POLL_TRIES; 1032 1033 if (!card || !card->func) { 1034 BT_ERR("card or function is NULL!"); 1035 return -EINVAL; 1036 } 1037 1038 if (!btmrvl_sdio_verify_fw_download(card, 1)) { 1039 BT_DBG("Firmware already downloaded!"); 1040 return 0; 1041 } 1042 1043 sdio_claim_host(card->func); 1044 1045 /* Check if other function driver is downloading the firmware */ 1046 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret); 1047 if (ret) { 1048 BT_ERR("Failed to read FW downloading status!"); 1049 ret = -EIO; 1050 goto done; 1051 } 1052 if (fws0) { 1053 BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0); 1054 1055 /* Give other function more time to download the firmware */ 1056 pollnum *= 10; 1057 } else { 1058 if (card->helper) { 1059 ret = btmrvl_sdio_download_helper(card); 1060 if (ret) { 1061 BT_ERR("Failed to download helper!"); 1062 ret = -EIO; 1063 goto done; 1064 } 1065 } 1066 1067 if (btmrvl_sdio_download_fw_w_helper(card)) { 1068 BT_ERR("Failed to download firmware!"); 1069 ret = -EIO; 1070 goto done; 1071 } 1072 } 1073 1074 /* 1075 * winner or not, with this test the FW synchronizes when the 1076 * module can continue its initialization 1077 */ 1078 if (btmrvl_sdio_verify_fw_download(card, pollnum)) { 1079 BT_ERR("FW failed to be active in time!"); 1080 return -ETIMEDOUT; 1081 } 1082 1083 sdio_release_host(card->func); 1084 1085 return 0; 1086 1087 done: 1088 sdio_release_host(card->func); 1089 return ret; 1090 } 1091 1092 static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv) 1093 { 1094 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; 1095 int ret = 0; 1096 1097 if (!card || !card->func) { 1098 BT_ERR("card or function is NULL!"); 1099 return -EINVAL; 1100 } 1101 1102 sdio_claim_host(card->func); 1103 1104 sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret); 1105 1106 sdio_release_host(card->func); 1107 1108 BT_DBG("wake up firmware"); 1109 1110 return ret; 1111 } 1112 1113 static void btmrvl_sdio_dump_regs(struct btmrvl_private *priv) 1114 { 1115 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; 1116 int ret = 0; 1117 unsigned int reg, reg_start, reg_end; 1118 char buf[256], *ptr; 1119 u8 loop, func, data; 1120 int MAX_LOOP = 2; 1121 1122 btmrvl_sdio_wakeup_fw(priv); 1123 sdio_claim_host(card->func); 1124 1125 for (loop = 0; loop < MAX_LOOP; loop++) { 1126 memset(buf, 0, sizeof(buf)); 1127 ptr = buf; 1128 1129 if (loop == 0) { 1130 /* Read the registers of SDIO function0 */ 1131 func = loop; 1132 reg_start = 0; 1133 reg_end = 9; 1134 } else { 1135 func = 2; 1136 reg_start = 0; 1137 reg_end = 0x09; 1138 } 1139 1140 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ", 1141 func, reg_start, reg_end); 1142 for (reg = reg_start; reg <= reg_end; reg++) { 1143 if (func == 0) 1144 data = sdio_f0_readb(card->func, reg, &ret); 1145 else 1146 data = sdio_readb(card->func, reg, &ret); 1147 1148 if (!ret) { 1149 ptr += sprintf(ptr, "%02x ", data); 1150 } else { 1151 ptr += sprintf(ptr, "ERR"); 1152 break; 1153 } 1154 } 1155 1156 BT_INFO("%s", buf); 1157 } 1158 1159 sdio_release_host(card->func); 1160 } 1161 1162 /* This function read/write firmware */ 1163 static enum 1164 rdwr_status btmrvl_sdio_rdwr_firmware(struct btmrvl_private *priv, 1165 u8 doneflag) 1166 { 1167 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; 1168 int ret, tries; 1169 u8 ctrl_data = 0; 1170 1171 sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl, 1172 &ret); 1173 1174 if (ret) { 1175 BT_ERR("SDIO write err"); 1176 return RDWR_STATUS_FAILURE; 1177 } 1178 1179 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 1180 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl, 1181 &ret); 1182 1183 if (ret) { 1184 BT_ERR("SDIO read err"); 1185 return RDWR_STATUS_FAILURE; 1186 } 1187 1188 if (ctrl_data == FW_DUMP_DONE) 1189 break; 1190 if (doneflag && ctrl_data == doneflag) 1191 return RDWR_STATUS_DONE; 1192 if (ctrl_data != FW_DUMP_HOST_READY) { 1193 BT_INFO("The ctrl reg was changed, re-try again!"); 1194 sdio_writeb(card->func, FW_DUMP_HOST_READY, 1195 card->reg->fw_dump_ctrl, &ret); 1196 if (ret) { 1197 BT_ERR("SDIO write err"); 1198 return RDWR_STATUS_FAILURE; 1199 } 1200 } 1201 usleep_range(100, 200); 1202 } 1203 1204 if (ctrl_data == FW_DUMP_HOST_READY) { 1205 BT_ERR("Fail to pull ctrl_data"); 1206 return RDWR_STATUS_FAILURE; 1207 } 1208 1209 return RDWR_STATUS_SUCCESS; 1210 } 1211 1212 /* This function dump sdio register and memory data */ 1213 static void btmrvl_sdio_dump_firmware(struct btmrvl_private *priv) 1214 { 1215 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; 1216 int ret = 0; 1217 unsigned int reg, reg_start, reg_end; 1218 enum rdwr_status stat; 1219 u8 *dbg_ptr, *end_ptr, *fw_dump_data, *fw_dump_ptr; 1220 u8 dump_num = 0, idx, i, read_reg, doneflag = 0; 1221 u32 memory_size, fw_dump_len = 0; 1222 1223 /* dump sdio register first */ 1224 btmrvl_sdio_dump_regs(priv); 1225 1226 if (!card->supports_fw_dump) { 1227 BT_ERR("Firmware dump not supported for this card!"); 1228 return; 1229 } 1230 1231 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) { 1232 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; 1233 1234 if (entry->mem_ptr) { 1235 vfree(entry->mem_ptr); 1236 entry->mem_ptr = NULL; 1237 } 1238 entry->mem_size = 0; 1239 } 1240 1241 btmrvl_sdio_wakeup_fw(priv); 1242 sdio_claim_host(card->func); 1243 1244 BT_INFO("== btmrvl firmware dump start =="); 1245 1246 stat = btmrvl_sdio_rdwr_firmware(priv, doneflag); 1247 if (stat == RDWR_STATUS_FAILURE) 1248 goto done; 1249 1250 reg = card->reg->fw_dump_start; 1251 /* Read the number of the memories which will dump */ 1252 dump_num = sdio_readb(card->func, reg, &ret); 1253 1254 if (ret) { 1255 BT_ERR("SDIO read memory length err"); 1256 goto done; 1257 } 1258 1259 /* Read the length of every memory which will dump */ 1260 for (idx = 0; idx < dump_num; idx++) { 1261 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; 1262 1263 stat = btmrvl_sdio_rdwr_firmware(priv, doneflag); 1264 if (stat == RDWR_STATUS_FAILURE) 1265 goto done; 1266 1267 memory_size = 0; 1268 reg = card->reg->fw_dump_start; 1269 for (i = 0; i < 4; i++) { 1270 read_reg = sdio_readb(card->func, reg, &ret); 1271 if (ret) { 1272 BT_ERR("SDIO read err"); 1273 goto done; 1274 } 1275 memory_size |= (read_reg << i*8); 1276 reg++; 1277 } 1278 1279 if (memory_size == 0) { 1280 BT_INFO("Firmware dump finished!"); 1281 break; 1282 } 1283 1284 BT_INFO("%s_SIZE=0x%x", entry->mem_name, memory_size); 1285 entry->mem_ptr = vzalloc(memory_size + 1); 1286 entry->mem_size = memory_size; 1287 if (!entry->mem_ptr) { 1288 BT_ERR("Vzalloc %s failed", entry->mem_name); 1289 goto done; 1290 } 1291 1292 fw_dump_len += (strlen("========Start dump ") + 1293 strlen(entry->mem_name) + 1294 strlen("========\n") + 1295 (memory_size + 1) + 1296 strlen("\n========End dump========\n")); 1297 1298 dbg_ptr = entry->mem_ptr; 1299 end_ptr = dbg_ptr + memory_size; 1300 1301 doneflag = entry->done_flag; 1302 BT_INFO("Start %s output, please wait...", 1303 entry->mem_name); 1304 1305 do { 1306 stat = btmrvl_sdio_rdwr_firmware(priv, doneflag); 1307 if (stat == RDWR_STATUS_FAILURE) 1308 goto done; 1309 1310 reg_start = card->reg->fw_dump_start; 1311 reg_end = card->reg->fw_dump_end; 1312 for (reg = reg_start; reg <= reg_end; reg++) { 1313 *dbg_ptr = sdio_readb(card->func, reg, &ret); 1314 if (ret) { 1315 BT_ERR("SDIO read err"); 1316 goto done; 1317 } 1318 if (dbg_ptr < end_ptr) 1319 dbg_ptr++; 1320 else 1321 BT_ERR("Allocated buffer not enough"); 1322 } 1323 1324 if (stat != RDWR_STATUS_DONE) { 1325 continue; 1326 } else { 1327 BT_INFO("%s done: size=0x%tx", 1328 entry->mem_name, 1329 dbg_ptr - entry->mem_ptr); 1330 break; 1331 } 1332 } while (1); 1333 } 1334 1335 BT_INFO("== btmrvl firmware dump end =="); 1336 1337 done: 1338 sdio_release_host(card->func); 1339 1340 if (fw_dump_len == 0) 1341 return; 1342 1343 fw_dump_data = vzalloc(fw_dump_len+1); 1344 if (!fw_dump_data) { 1345 BT_ERR("Vzalloc fw_dump_data fail!"); 1346 return; 1347 } 1348 fw_dump_ptr = fw_dump_data; 1349 1350 /* Dump all the memory data into single file, a userspace script will 1351 be used to split all the memory data to multiple files*/ 1352 BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump start"); 1353 for (idx = 0; idx < dump_num; idx++) { 1354 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; 1355 1356 if (entry->mem_ptr) { 1357 strcpy(fw_dump_ptr, "========Start dump "); 1358 fw_dump_ptr += strlen("========Start dump "); 1359 1360 strcpy(fw_dump_ptr, entry->mem_name); 1361 fw_dump_ptr += strlen(entry->mem_name); 1362 1363 strcpy(fw_dump_ptr, "========\n"); 1364 fw_dump_ptr += strlen("========\n"); 1365 1366 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size); 1367 fw_dump_ptr += entry->mem_size; 1368 1369 strcpy(fw_dump_ptr, "\n========End dump========\n"); 1370 fw_dump_ptr += strlen("\n========End dump========\n"); 1371 1372 vfree(mem_type_mapping_tbl[idx].mem_ptr); 1373 mem_type_mapping_tbl[idx].mem_ptr = NULL; 1374 } 1375 } 1376 1377 /* fw_dump_data will be free in device coredump release function 1378 after 5 min*/ 1379 dev_coredumpv(&card->func->dev, fw_dump_data, fw_dump_len, GFP_KERNEL); 1380 BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump end"); 1381 } 1382 1383 static int btmrvl_sdio_probe(struct sdio_func *func, 1384 const struct sdio_device_id *id) 1385 { 1386 int ret = 0; 1387 struct btmrvl_private *priv = NULL; 1388 struct btmrvl_sdio_card *card = NULL; 1389 1390 BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d", 1391 id->vendor, id->device, id->class, func->num); 1392 1393 card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL); 1394 if (!card) 1395 return -ENOMEM; 1396 1397 card->func = func; 1398 1399 if (id->driver_data) { 1400 struct btmrvl_sdio_device *data = (void *) id->driver_data; 1401 card->helper = data->helper; 1402 card->firmware = data->firmware; 1403 card->reg = data->reg; 1404 card->sd_blksz_fw_dl = data->sd_blksz_fw_dl; 1405 card->support_pscan_win_report = data->support_pscan_win_report; 1406 card->supports_fw_dump = data->supports_fw_dump; 1407 } 1408 1409 if (btmrvl_sdio_register_dev(card) < 0) { 1410 BT_ERR("Failed to register BT device!"); 1411 return -ENODEV; 1412 } 1413 1414 /* Disable the interrupts on the card */ 1415 btmrvl_sdio_disable_host_int(card); 1416 1417 if (btmrvl_sdio_download_fw(card)) { 1418 BT_ERR("Downloading firmware failed!"); 1419 ret = -ENODEV; 1420 goto unreg_dev; 1421 } 1422 1423 btmrvl_sdio_enable_host_int(card); 1424 1425 priv = btmrvl_add_card(card); 1426 if (!priv) { 1427 BT_ERR("Initializing card failed!"); 1428 ret = -ENODEV; 1429 goto disable_host_int; 1430 } 1431 1432 card->priv = priv; 1433 1434 /* Initialize the interface specific function pointers */ 1435 priv->hw_host_to_card = btmrvl_sdio_host_to_card; 1436 priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw; 1437 priv->hw_process_int_status = btmrvl_sdio_process_int_status; 1438 priv->firmware_dump = btmrvl_sdio_dump_firmware; 1439 1440 if (btmrvl_register_hdev(priv)) { 1441 BT_ERR("Register hdev failed!"); 1442 ret = -ENODEV; 1443 goto disable_host_int; 1444 } 1445 1446 return 0; 1447 1448 disable_host_int: 1449 btmrvl_sdio_disable_host_int(card); 1450 unreg_dev: 1451 btmrvl_sdio_unregister_dev(card); 1452 return ret; 1453 } 1454 1455 static void btmrvl_sdio_remove(struct sdio_func *func) 1456 { 1457 struct btmrvl_sdio_card *card; 1458 1459 if (func) { 1460 card = sdio_get_drvdata(func); 1461 if (card) { 1462 /* Send SHUTDOWN command & disable interrupt 1463 * if user removes the module. 1464 */ 1465 if (user_rmmod) { 1466 btmrvl_send_module_cfg_cmd(card->priv, 1467 MODULE_SHUTDOWN_REQ); 1468 btmrvl_sdio_disable_host_int(card); 1469 } 1470 BT_DBG("unregester dev"); 1471 card->priv->surprise_removed = true; 1472 btmrvl_sdio_unregister_dev(card); 1473 btmrvl_remove_card(card->priv); 1474 } 1475 } 1476 } 1477 1478 static int btmrvl_sdio_suspend(struct device *dev) 1479 { 1480 struct sdio_func *func = dev_to_sdio_func(dev); 1481 struct btmrvl_sdio_card *card; 1482 struct btmrvl_private *priv; 1483 mmc_pm_flag_t pm_flags; 1484 struct hci_dev *hcidev; 1485 1486 if (func) { 1487 pm_flags = sdio_get_host_pm_caps(func); 1488 BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func), 1489 pm_flags); 1490 if (!(pm_flags & MMC_PM_KEEP_POWER)) { 1491 BT_ERR("%s: cannot remain alive while suspended", 1492 sdio_func_id(func)); 1493 return -ENOSYS; 1494 } 1495 card = sdio_get_drvdata(func); 1496 if (!card || !card->priv) { 1497 BT_ERR("card or priv structure is not valid"); 1498 return 0; 1499 } 1500 } else { 1501 BT_ERR("sdio_func is not specified"); 1502 return 0; 1503 } 1504 1505 priv = card->priv; 1506 hcidev = priv->btmrvl_dev.hcidev; 1507 BT_DBG("%s: SDIO suspend", hcidev->name); 1508 hci_suspend_dev(hcidev); 1509 skb_queue_purge(&priv->adapter->tx_queue); 1510 1511 if (priv->adapter->hs_state != HS_ACTIVATED) { 1512 if (btmrvl_enable_hs(priv)) { 1513 BT_ERR("HS not actived, suspend failed!"); 1514 return -EBUSY; 1515 } 1516 } 1517 1518 priv->adapter->is_suspended = true; 1519 1520 /* We will keep the power when hs enabled successfully */ 1521 if (priv->adapter->hs_state == HS_ACTIVATED) { 1522 BT_DBG("suspend with MMC_PM_KEEP_POWER"); 1523 return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); 1524 } else { 1525 BT_DBG("suspend without MMC_PM_KEEP_POWER"); 1526 return 0; 1527 } 1528 } 1529 1530 static int btmrvl_sdio_resume(struct device *dev) 1531 { 1532 struct sdio_func *func = dev_to_sdio_func(dev); 1533 struct btmrvl_sdio_card *card; 1534 struct btmrvl_private *priv; 1535 mmc_pm_flag_t pm_flags; 1536 struct hci_dev *hcidev; 1537 1538 if (func) { 1539 pm_flags = sdio_get_host_pm_caps(func); 1540 BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func), 1541 pm_flags); 1542 card = sdio_get_drvdata(func); 1543 if (!card || !card->priv) { 1544 BT_ERR("card or priv structure is not valid"); 1545 return 0; 1546 } 1547 } else { 1548 BT_ERR("sdio_func is not specified"); 1549 return 0; 1550 } 1551 priv = card->priv; 1552 1553 if (!priv->adapter->is_suspended) { 1554 BT_DBG("device already resumed"); 1555 return 0; 1556 } 1557 1558 priv->hw_wakeup_firmware(priv); 1559 priv->adapter->hs_state = HS_DEACTIVATED; 1560 hcidev = priv->btmrvl_dev.hcidev; 1561 BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name); 1562 priv->adapter->is_suspended = false; 1563 BT_DBG("%s: SDIO resume", hcidev->name); 1564 hci_resume_dev(hcidev); 1565 1566 return 0; 1567 } 1568 1569 static const struct dev_pm_ops btmrvl_sdio_pm_ops = { 1570 .suspend = btmrvl_sdio_suspend, 1571 .resume = btmrvl_sdio_resume, 1572 }; 1573 1574 static struct sdio_driver bt_mrvl_sdio = { 1575 .name = "btmrvl_sdio", 1576 .id_table = btmrvl_sdio_ids, 1577 .probe = btmrvl_sdio_probe, 1578 .remove = btmrvl_sdio_remove, 1579 .drv = { 1580 .owner = THIS_MODULE, 1581 .pm = &btmrvl_sdio_pm_ops, 1582 } 1583 }; 1584 1585 static int __init btmrvl_sdio_init_module(void) 1586 { 1587 if (sdio_register_driver(&bt_mrvl_sdio) != 0) { 1588 BT_ERR("SDIO Driver Registration Failed"); 1589 return -ENODEV; 1590 } 1591 1592 /* Clear the flag in case user removes the card. */ 1593 user_rmmod = 0; 1594 1595 return 0; 1596 } 1597 1598 static void __exit btmrvl_sdio_exit_module(void) 1599 { 1600 /* Set the flag as user is removing this module. */ 1601 user_rmmod = 1; 1602 1603 sdio_unregister_driver(&bt_mrvl_sdio); 1604 } 1605 1606 module_init(btmrvl_sdio_init_module); 1607 module_exit(btmrvl_sdio_exit_module); 1608 1609 MODULE_AUTHOR("Marvell International Ltd."); 1610 MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION); 1611 MODULE_VERSION(VERSION); 1612 MODULE_LICENSE("GPL v2"); 1613 MODULE_FIRMWARE("mrvl/sd8688_helper.bin"); 1614 MODULE_FIRMWARE("mrvl/sd8688.bin"); 1615 MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin"); 1616 MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin"); 1617 MODULE_FIRMWARE("mrvl/sd8887_uapsta.bin"); 1618 MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin"); 1619