1 // SPDX-License-Identifier: ISC 2 /* 3 * Copyright (c) 2010 Broadcom Corporation 4 */ 5 /* ****************** SDIO CARD Interface Functions **************************/ 6 7 #include <linux/types.h> 8 #include <linux/netdevice.h> 9 #include <linux/pci.h> 10 #include <linux/pci_ids.h> 11 #include <linux/sched.h> 12 #include <linux/completion.h> 13 #include <linux/interrupt.h> 14 #include <linux/scatterlist.h> 15 #include <linux/mmc/sdio.h> 16 #include <linux/mmc/core.h> 17 #include <linux/mmc/sdio_func.h> 18 #include <linux/mmc/card.h> 19 #include <linux/mmc/host.h> 20 #include <linux/pm_runtime.h> 21 #include <linux/suspend.h> 22 #include <linux/errno.h> 23 #include <linux/module.h> 24 #include <linux/acpi.h> 25 #include <net/cfg80211.h> 26 27 #include <defs.h> 28 #include <brcm_hw_ids.h> 29 #include <brcmu_utils.h> 30 #include <brcmu_wifi.h> 31 #include <chipcommon.h> 32 #include <soc.h> 33 #include "chip.h" 34 #include "bus.h" 35 #include "debug.h" 36 #include "sdio.h" 37 #include "core.h" 38 #include "common.h" 39 40 #define SDIOH_API_ACCESS_RETRY_LIMIT 2 41 42 #define DMA_ALIGN_MASK 0x03 43 44 #define SDIO_FUNC1_BLOCKSIZE 64 45 #define SDIO_FUNC2_BLOCKSIZE 512 46 #define SDIO_4373_FUNC2_BLOCKSIZE 256 47 #define SDIO_435X_FUNC2_BLOCKSIZE 256 48 #define SDIO_4329_FUNC2_BLOCKSIZE 128 49 /* Maximum milliseconds to wait for F2 to come up */ 50 #define SDIO_WAIT_F2RDY 3000 51 52 #define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */ 53 54 struct brcmf_sdiod_freezer { 55 atomic_t freezing; 56 atomic_t thread_count; 57 u32 frozen_count; 58 wait_queue_head_t thread_freeze; 59 struct completion resumed; 60 }; 61 62 static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id) 63 { 64 struct brcmf_bus *bus_if = dev_get_drvdata(dev_id); 65 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; 66 67 brcmf_dbg(INTR, "OOB intr triggered\n"); 68 69 /* out-of-band interrupt is level-triggered which won't 70 * be cleared until dpc 71 */ 72 if (sdiodev->irq_en) { 73 disable_irq_nosync(irq); 74 sdiodev->irq_en = false; 75 } 76 77 brcmf_sdio_isr(sdiodev->bus, true); 78 79 return IRQ_HANDLED; 80 } 81 82 static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func) 83 { 84 struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev); 85 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; 86 87 brcmf_dbg(INTR, "IB intr triggered\n"); 88 89 brcmf_sdio_isr(sdiodev->bus, false); 90 } 91 92 /* dummy handler for SDIO function 2 interrupt */ 93 static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func) 94 { 95 } 96 97 int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev) 98 { 99 struct brcmfmac_sdio_pd *pdata; 100 int ret = 0; 101 u8 data; 102 u32 addr, gpiocontrol; 103 104 pdata = &sdiodev->settings->bus.sdio; 105 if (pdata->oob_irq_supported) { 106 brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n", 107 pdata->oob_irq_nr); 108 spin_lock_init(&sdiodev->irq_en_lock); 109 sdiodev->irq_en = true; 110 111 ret = request_irq(pdata->oob_irq_nr, brcmf_sdiod_oob_irqhandler, 112 pdata->oob_irq_flags, "brcmf_oob_intr", 113 &sdiodev->func1->dev); 114 if (ret != 0) { 115 brcmf_err("request_irq failed %d\n", ret); 116 return ret; 117 } 118 sdiodev->oob_irq_requested = true; 119 120 ret = enable_irq_wake(pdata->oob_irq_nr); 121 if (ret != 0) { 122 brcmf_err("enable_irq_wake failed %d\n", ret); 123 return ret; 124 } 125 disable_irq_wake(pdata->oob_irq_nr); 126 127 sdio_claim_host(sdiodev->func1); 128 129 if (sdiodev->bus_if->chip == BRCM_CC_43362_CHIP_ID) { 130 /* assign GPIO to SDIO core */ 131 addr = brcmf_chip_enum_base(sdiodev->func1->device); 132 addr = CORE_CC_REG(addr, gpiocontrol); 133 gpiocontrol = brcmf_sdiod_readl(sdiodev, addr, &ret); 134 gpiocontrol |= 0x2; 135 brcmf_sdiod_writel(sdiodev, addr, gpiocontrol, &ret); 136 137 brcmf_sdiod_writeb(sdiodev, SBSDIO_GPIO_SELECT, 138 0xf, &ret); 139 brcmf_sdiod_writeb(sdiodev, SBSDIO_GPIO_OUT, 0, &ret); 140 brcmf_sdiod_writeb(sdiodev, SBSDIO_GPIO_EN, 0x2, &ret); 141 } 142 143 /* must configure SDIO_CCCR_IENx to enable irq */ 144 data = brcmf_sdiod_func0_rb(sdiodev, SDIO_CCCR_IENx, &ret); 145 data |= SDIO_CCCR_IEN_FUNC1 | SDIO_CCCR_IEN_FUNC2 | 146 SDIO_CCCR_IEN_FUNC0; 147 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_IENx, data, &ret); 148 149 /* redirect, configure and enable io for interrupt signal */ 150 data = SDIO_CCCR_BRCM_SEPINT_MASK | SDIO_CCCR_BRCM_SEPINT_OE; 151 if (pdata->oob_irq_flags & IRQF_TRIGGER_HIGH) 152 data |= SDIO_CCCR_BRCM_SEPINT_ACT_HI; 153 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 154 data, &ret); 155 sdio_release_host(sdiodev->func1); 156 } else { 157 brcmf_dbg(SDIO, "Entering\n"); 158 sdio_claim_host(sdiodev->func1); 159 sdio_claim_irq(sdiodev->func1, brcmf_sdiod_ib_irqhandler); 160 sdio_claim_irq(sdiodev->func2, brcmf_sdiod_dummy_irqhandler); 161 sdio_release_host(sdiodev->func1); 162 sdiodev->sd_irq_requested = true; 163 } 164 165 return 0; 166 } 167 168 void brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev) 169 { 170 171 brcmf_dbg(SDIO, "Entering oob=%d sd=%d\n", 172 sdiodev->oob_irq_requested, 173 sdiodev->sd_irq_requested); 174 175 if (sdiodev->oob_irq_requested) { 176 struct brcmfmac_sdio_pd *pdata; 177 178 pdata = &sdiodev->settings->bus.sdio; 179 sdio_claim_host(sdiodev->func1); 180 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL); 181 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_IENx, 0, NULL); 182 sdio_release_host(sdiodev->func1); 183 184 sdiodev->oob_irq_requested = false; 185 free_irq(pdata->oob_irq_nr, &sdiodev->func1->dev); 186 sdiodev->irq_en = false; 187 sdiodev->oob_irq_requested = false; 188 } 189 190 if (sdiodev->sd_irq_requested) { 191 sdio_claim_host(sdiodev->func1); 192 sdio_release_irq(sdiodev->func2); 193 sdio_release_irq(sdiodev->func1); 194 sdio_release_host(sdiodev->func1); 195 sdiodev->sd_irq_requested = false; 196 } 197 } 198 199 void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev, 200 enum brcmf_sdiod_state state) 201 { 202 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM || 203 state == sdiodev->state) 204 return; 205 206 brcmf_dbg(TRACE, "%d -> %d\n", sdiodev->state, state); 207 switch (sdiodev->state) { 208 case BRCMF_SDIOD_DATA: 209 /* any other state means bus interface is down */ 210 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN); 211 break; 212 case BRCMF_SDIOD_DOWN: 213 /* transition from DOWN to DATA means bus interface is up */ 214 if (state == BRCMF_SDIOD_DATA) 215 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_UP); 216 break; 217 default: 218 break; 219 } 220 sdiodev->state = state; 221 } 222 223 static int brcmf_sdiod_set_backplane_window(struct brcmf_sdio_dev *sdiodev, 224 u32 addr) 225 { 226 u32 v, bar0 = addr & SBSDIO_SBWINDOW_MASK; 227 int err = 0, i; 228 229 if (bar0 == sdiodev->sbwad) 230 return 0; 231 232 v = bar0 >> 8; 233 234 for (i = 0 ; i < 3 && !err ; i++, v >>= 8) 235 brcmf_sdiod_writeb(sdiodev, SBSDIO_FUNC1_SBADDRLOW + i, 236 v & 0xff, &err); 237 238 if (!err) 239 sdiodev->sbwad = bar0; 240 241 return err; 242 } 243 244 u32 brcmf_sdiod_readl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) 245 { 246 u32 data = 0; 247 int retval; 248 249 retval = brcmf_sdiod_set_backplane_window(sdiodev, addr); 250 if (retval) 251 goto out; 252 253 addr &= SBSDIO_SB_OFT_ADDR_MASK; 254 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; 255 256 data = sdio_readl(sdiodev->func1, addr, &retval); 257 258 out: 259 if (ret) 260 *ret = retval; 261 262 return data; 263 } 264 265 void brcmf_sdiod_writel(struct brcmf_sdio_dev *sdiodev, u32 addr, 266 u32 data, int *ret) 267 { 268 int retval; 269 270 retval = brcmf_sdiod_set_backplane_window(sdiodev, addr); 271 if (retval) 272 goto out; 273 274 addr &= SBSDIO_SB_OFT_ADDR_MASK; 275 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; 276 277 sdio_writel(sdiodev->func1, data, addr, &retval); 278 279 out: 280 if (ret) 281 *ret = retval; 282 } 283 284 static int brcmf_sdiod_skbuff_read(struct brcmf_sdio_dev *sdiodev, 285 struct sdio_func *func, u32 addr, 286 struct sk_buff *skb) 287 { 288 unsigned int req_sz; 289 int err; 290 291 /* Single skb use the standard mmc interface */ 292 req_sz = skb->len + 3; 293 req_sz &= (uint)~3; 294 295 switch (func->num) { 296 case 1: 297 err = sdio_memcpy_fromio(func, ((u8 *)(skb->data)), addr, 298 req_sz); 299 break; 300 case 2: 301 err = sdio_readsb(func, ((u8 *)(skb->data)), addr, req_sz); 302 break; 303 default: 304 /* bail out as things are really fishy here */ 305 WARN(1, "invalid sdio function number: %d\n", func->num); 306 err = -ENOMEDIUM; 307 } 308 309 if (err == -ENOMEDIUM) 310 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); 311 312 return err; 313 } 314 315 static int brcmf_sdiod_skbuff_write(struct brcmf_sdio_dev *sdiodev, 316 struct sdio_func *func, u32 addr, 317 struct sk_buff *skb) 318 { 319 unsigned int req_sz; 320 int err; 321 322 /* Single skb use the standard mmc interface */ 323 req_sz = skb->len + 3; 324 req_sz &= (uint)~3; 325 326 err = sdio_memcpy_toio(func, addr, ((u8 *)(skb->data)), req_sz); 327 328 if (err == -ENOMEDIUM) 329 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); 330 331 return err; 332 } 333 334 static int mmc_submit_one(struct mmc_data *md, struct mmc_request *mr, 335 struct mmc_command *mc, int sg_cnt, int req_sz, 336 int func_blk_sz, u32 *addr, 337 struct brcmf_sdio_dev *sdiodev, 338 struct sdio_func *func, int write) 339 { 340 int ret; 341 342 md->sg_len = sg_cnt; 343 md->blocks = req_sz / func_blk_sz; 344 mc->arg |= (*addr & 0x1FFFF) << 9; /* address */ 345 mc->arg |= md->blocks & 0x1FF; /* block count */ 346 /* incrementing addr for function 1 */ 347 if (func->num == 1) 348 *addr += req_sz; 349 350 mmc_set_data_timeout(md, func->card); 351 mmc_wait_for_req(func->card->host, mr); 352 353 ret = mc->error ? mc->error : md->error; 354 if (ret == -ENOMEDIUM) { 355 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); 356 } else if (ret != 0) { 357 brcmf_err("CMD53 sg block %s failed %d\n", 358 write ? "write" : "read", ret); 359 ret = -EIO; 360 } 361 362 return ret; 363 } 364 365 /** 366 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access 367 * @sdiodev: brcmfmac sdio device 368 * @func: SDIO function 369 * @write: direction flag 370 * @addr: dongle memory address as source/destination 371 * @pktlist: skb buffer head pointer 372 * 373 * This function takes the respbonsibility as the interface function to MMC 374 * stack for block data access. It assumes that the skb passed down by the 375 * caller has already been padded and aligned. 376 */ 377 static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, 378 struct sdio_func *func, 379 bool write, u32 addr, 380 struct sk_buff_head *pktlist) 381 { 382 unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset; 383 unsigned int max_req_sz, src_offset, dst_offset; 384 unsigned char *pkt_data, *orig_data, *dst_data; 385 struct sk_buff_head local_list, *target_list; 386 struct sk_buff *pkt_next = NULL, *src; 387 unsigned short max_seg_cnt; 388 struct mmc_request mmc_req; 389 struct mmc_command mmc_cmd; 390 struct mmc_data mmc_dat; 391 struct scatterlist *sgl; 392 int ret = 0; 393 394 if (!pktlist->qlen) 395 return -EINVAL; 396 397 target_list = pktlist; 398 /* for host with broken sg support, prepare a page aligned list */ 399 __skb_queue_head_init(&local_list); 400 if (!write && sdiodev->settings->bus.sdio.broken_sg_support) { 401 req_sz = 0; 402 skb_queue_walk(pktlist, pkt_next) 403 req_sz += pkt_next->len; 404 req_sz = ALIGN(req_sz, func->cur_blksize); 405 while (req_sz > PAGE_SIZE) { 406 pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE); 407 if (pkt_next == NULL) { 408 ret = -ENOMEM; 409 goto exit; 410 } 411 __skb_queue_tail(&local_list, pkt_next); 412 req_sz -= PAGE_SIZE; 413 } 414 pkt_next = brcmu_pkt_buf_get_skb(req_sz); 415 if (pkt_next == NULL) { 416 ret = -ENOMEM; 417 goto exit; 418 } 419 __skb_queue_tail(&local_list, pkt_next); 420 target_list = &local_list; 421 } 422 423 func_blk_sz = func->cur_blksize; 424 max_req_sz = sdiodev->max_request_size; 425 max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count, 426 target_list->qlen); 427 428 memset(&mmc_req, 0, sizeof(struct mmc_request)); 429 memset(&mmc_cmd, 0, sizeof(struct mmc_command)); 430 memset(&mmc_dat, 0, sizeof(struct mmc_data)); 431 432 mmc_dat.sg = sdiodev->sgtable.sgl; 433 mmc_dat.blksz = func_blk_sz; 434 mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; 435 mmc_cmd.opcode = SD_IO_RW_EXTENDED; 436 mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */ 437 mmc_cmd.arg |= (func->num & 0x7) << 28; /* SDIO func num */ 438 mmc_cmd.arg |= 1 << 27; /* block mode */ 439 /* for function 1 the addr will be incremented */ 440 mmc_cmd.arg |= (func->num == 1) ? 1 << 26 : 0; 441 mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC; 442 mmc_req.cmd = &mmc_cmd; 443 mmc_req.data = &mmc_dat; 444 445 req_sz = 0; 446 sg_cnt = 0; 447 sgl = sdiodev->sgtable.sgl; 448 skb_queue_walk(target_list, pkt_next) { 449 pkt_offset = 0; 450 while (pkt_offset < pkt_next->len) { 451 pkt_data = pkt_next->data + pkt_offset; 452 sg_data_sz = pkt_next->len - pkt_offset; 453 if (sg_data_sz > sdiodev->max_segment_size) 454 sg_data_sz = sdiodev->max_segment_size; 455 if (sg_data_sz > max_req_sz - req_sz) 456 sg_data_sz = max_req_sz - req_sz; 457 458 sg_set_buf(sgl, pkt_data, sg_data_sz); 459 sg_cnt++; 460 461 sgl = sg_next(sgl); 462 req_sz += sg_data_sz; 463 pkt_offset += sg_data_sz; 464 if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt) { 465 ret = mmc_submit_one(&mmc_dat, &mmc_req, &mmc_cmd, 466 sg_cnt, req_sz, func_blk_sz, 467 &addr, sdiodev, func, write); 468 if (ret) 469 goto exit_queue_walk; 470 req_sz = 0; 471 sg_cnt = 0; 472 sgl = sdiodev->sgtable.sgl; 473 } 474 } 475 } 476 if (sg_cnt) 477 ret = mmc_submit_one(&mmc_dat, &mmc_req, &mmc_cmd, 478 sg_cnt, req_sz, func_blk_sz, 479 &addr, sdiodev, func, write); 480 exit_queue_walk: 481 if (!write && sdiodev->settings->bus.sdio.broken_sg_support) { 482 src = __skb_peek(&local_list); 483 src_offset = 0; 484 skb_queue_walk(pktlist, pkt_next) { 485 dst_offset = 0; 486 487 /* This is safe because we must have enough SKB data 488 * in the local list to cover everything in pktlist. 489 */ 490 while (1) { 491 req_sz = pkt_next->len - dst_offset; 492 if (req_sz > src->len - src_offset) 493 req_sz = src->len - src_offset; 494 495 orig_data = src->data + src_offset; 496 dst_data = pkt_next->data + dst_offset; 497 memcpy(dst_data, orig_data, req_sz); 498 499 src_offset += req_sz; 500 if (src_offset == src->len) { 501 src_offset = 0; 502 src = skb_peek_next(src, &local_list); 503 } 504 dst_offset += req_sz; 505 if (dst_offset == pkt_next->len) 506 break; 507 } 508 } 509 } 510 511 exit: 512 sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents); 513 while ((pkt_next = __skb_dequeue(&local_list)) != NULL) 514 brcmu_pkt_buf_free_skb(pkt_next); 515 516 return ret; 517 } 518 519 int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) 520 { 521 struct sk_buff *mypkt; 522 int err; 523 524 mypkt = brcmu_pkt_buf_get_skb(nbytes); 525 if (!mypkt) { 526 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", 527 nbytes); 528 return -EIO; 529 } 530 531 err = brcmf_sdiod_recv_pkt(sdiodev, mypkt); 532 if (!err) 533 memcpy(buf, mypkt->data, nbytes); 534 535 brcmu_pkt_buf_free_skb(mypkt); 536 return err; 537 } 538 539 int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt) 540 { 541 u32 addr = sdiodev->cc_core->base; 542 int err = 0; 543 544 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len); 545 546 err = brcmf_sdiod_set_backplane_window(sdiodev, addr); 547 if (err) 548 goto done; 549 550 addr &= SBSDIO_SB_OFT_ADDR_MASK; 551 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; 552 553 err = brcmf_sdiod_skbuff_read(sdiodev, sdiodev->func2, addr, pkt); 554 555 done: 556 return err; 557 } 558 559 int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev, 560 struct sk_buff_head *pktq, uint totlen) 561 { 562 struct sk_buff *glom_skb = NULL; 563 struct sk_buff *skb; 564 u32 addr = sdiodev->cc_core->base; 565 int err = 0; 566 567 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", 568 addr, pktq->qlen); 569 570 err = brcmf_sdiod_set_backplane_window(sdiodev, addr); 571 if (err) 572 goto done; 573 574 addr &= SBSDIO_SB_OFT_ADDR_MASK; 575 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; 576 577 if (pktq->qlen == 1) 578 err = brcmf_sdiod_skbuff_read(sdiodev, sdiodev->func2, addr, 579 __skb_peek(pktq)); 580 else if (!sdiodev->sg_support) { 581 glom_skb = brcmu_pkt_buf_get_skb(totlen); 582 if (!glom_skb) 583 return -ENOMEM; 584 err = brcmf_sdiod_skbuff_read(sdiodev, sdiodev->func2, addr, 585 glom_skb); 586 if (err) 587 goto done; 588 589 skb_queue_walk(pktq, skb) { 590 memcpy(skb->data, glom_skb->data, skb->len); 591 skb_pull(glom_skb, skb->len); 592 } 593 } else 594 err = brcmf_sdiod_sglist_rw(sdiodev, sdiodev->func2, false, 595 addr, pktq); 596 597 done: 598 brcmu_pkt_buf_free_skb(glom_skb); 599 return err; 600 } 601 602 int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) 603 { 604 struct sk_buff *mypkt; 605 u32 addr = sdiodev->cc_core->base; 606 int err; 607 608 mypkt = brcmu_pkt_buf_get_skb(nbytes); 609 610 if (!mypkt) { 611 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", 612 nbytes); 613 return -EIO; 614 } 615 616 memcpy(mypkt->data, buf, nbytes); 617 618 err = brcmf_sdiod_set_backplane_window(sdiodev, addr); 619 if (err) 620 goto out; 621 622 addr &= SBSDIO_SB_OFT_ADDR_MASK; 623 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; 624 625 err = brcmf_sdiod_skbuff_write(sdiodev, sdiodev->func2, addr, mypkt); 626 out: 627 brcmu_pkt_buf_free_skb(mypkt); 628 629 return err; 630 } 631 632 int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev, 633 struct sk_buff_head *pktq) 634 { 635 struct sk_buff *skb; 636 u32 addr = sdiodev->cc_core->base; 637 int err; 638 639 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen); 640 641 err = brcmf_sdiod_set_backplane_window(sdiodev, addr); 642 if (err) 643 return err; 644 645 addr &= SBSDIO_SB_OFT_ADDR_MASK; 646 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; 647 648 if (pktq->qlen == 1 || !sdiodev->sg_support) { 649 skb_queue_walk(pktq, skb) { 650 err = brcmf_sdiod_skbuff_write(sdiodev, sdiodev->func2, 651 addr, skb); 652 if (err) 653 break; 654 } 655 } else { 656 err = brcmf_sdiod_sglist_rw(sdiodev, sdiodev->func2, true, 657 addr, pktq); 658 } 659 660 return err; 661 } 662 663 int 664 brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address, 665 u8 *data, uint size) 666 { 667 int err = 0; 668 struct sk_buff *pkt; 669 u32 sdaddr; 670 uint dsize; 671 672 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); 673 pkt = dev_alloc_skb(dsize); 674 if (!pkt) { 675 brcmf_err("dev_alloc_skb failed: len %d\n", dsize); 676 return -EIO; 677 } 678 pkt->priority = 0; 679 680 /* Determine initial transfer parameters */ 681 sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK; 682 if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK) 683 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr); 684 else 685 dsize = size; 686 687 sdio_claim_host(sdiodev->func1); 688 689 /* Do the transfer(s) */ 690 while (size) { 691 /* Set the backplane window to include the start address */ 692 err = brcmf_sdiod_set_backplane_window(sdiodev, address); 693 if (err) 694 break; 695 696 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n", 697 write ? "write" : "read", dsize, 698 sdaddr, address & SBSDIO_SBWINDOW_MASK); 699 700 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK; 701 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG; 702 703 skb_put(pkt, dsize); 704 705 if (write) { 706 memcpy(pkt->data, data, dsize); 707 err = brcmf_sdiod_skbuff_write(sdiodev, sdiodev->func1, 708 sdaddr, pkt); 709 } else { 710 err = brcmf_sdiod_skbuff_read(sdiodev, sdiodev->func1, 711 sdaddr, pkt); 712 } 713 714 if (err) { 715 brcmf_err("membytes transfer failed\n"); 716 break; 717 } 718 if (!write) 719 memcpy(data, pkt->data, dsize); 720 skb_trim(pkt, 0); 721 722 /* Adjust for next transfer (if any) */ 723 size -= dsize; 724 if (size) { 725 data += dsize; 726 address += dsize; 727 sdaddr = 0; 728 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); 729 } 730 } 731 732 dev_kfree_skb(pkt); 733 734 sdio_release_host(sdiodev->func1); 735 736 return err; 737 } 738 739 int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, struct sdio_func *func) 740 { 741 brcmf_dbg(SDIO, "Enter\n"); 742 743 /* Issue abort cmd52 command through F0 */ 744 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_ABORT, func->num, NULL); 745 746 brcmf_dbg(SDIO, "Exit\n"); 747 return 0; 748 } 749 750 void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev) 751 { 752 struct sdio_func *func; 753 struct mmc_host *host; 754 uint max_blocks; 755 uint nents; 756 int err; 757 758 func = sdiodev->func2; 759 host = func->card->host; 760 sdiodev->sg_support = host->max_segs > 1; 761 max_blocks = min_t(uint, host->max_blk_count, 511u); 762 sdiodev->max_request_size = min_t(uint, host->max_req_size, 763 max_blocks * func->cur_blksize); 764 sdiodev->max_segment_count = min_t(uint, host->max_segs, 765 SG_MAX_SINGLE_ALLOC); 766 sdiodev->max_segment_size = host->max_seg_size; 767 768 if (!sdiodev->sg_support) 769 return; 770 771 nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE, 772 sdiodev->settings->bus.sdio.txglomsz); 773 nents += (nents >> 4) + 1; 774 775 WARN_ON(nents > sdiodev->max_segment_count); 776 777 brcmf_dbg(TRACE, "nents=%d\n", nents); 778 err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL); 779 if (err < 0) { 780 brcmf_err("allocation failed: disable scatter-gather"); 781 sdiodev->sg_support = false; 782 } 783 784 sdiodev->txglomsz = sdiodev->settings->bus.sdio.txglomsz; 785 } 786 787 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev) 788 { 789 if (!IS_ENABLED(CONFIG_PM_SLEEP)) 790 return 0; 791 792 sdiodev->freezer = kzalloc(sizeof(*sdiodev->freezer), GFP_KERNEL); 793 if (!sdiodev->freezer) 794 return -ENOMEM; 795 atomic_set(&sdiodev->freezer->thread_count, 0); 796 atomic_set(&sdiodev->freezer->freezing, 0); 797 init_waitqueue_head(&sdiodev->freezer->thread_freeze); 798 init_completion(&sdiodev->freezer->resumed); 799 return 0; 800 } 801 802 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev) 803 { 804 if (sdiodev->freezer) { 805 WARN_ON(atomic_read(&sdiodev->freezer->freezing)); 806 kfree(sdiodev->freezer); 807 sdiodev->freezer = NULL; 808 } 809 } 810 811 static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev *sdiodev) 812 { 813 atomic_t *expect = &sdiodev->freezer->thread_count; 814 int res = 0; 815 816 sdiodev->freezer->frozen_count = 0; 817 reinit_completion(&sdiodev->freezer->resumed); 818 atomic_set(&sdiodev->freezer->freezing, 1); 819 brcmf_sdio_trigger_dpc(sdiodev->bus); 820 wait_event(sdiodev->freezer->thread_freeze, 821 atomic_read(expect) == sdiodev->freezer->frozen_count); 822 sdio_claim_host(sdiodev->func1); 823 res = brcmf_sdio_sleep(sdiodev->bus, true); 824 sdio_release_host(sdiodev->func1); 825 return res; 826 } 827 828 static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev *sdiodev) 829 { 830 sdio_claim_host(sdiodev->func1); 831 brcmf_sdio_sleep(sdiodev->bus, false); 832 sdio_release_host(sdiodev->func1); 833 atomic_set(&sdiodev->freezer->freezing, 0); 834 complete_all(&sdiodev->freezer->resumed); 835 } 836 837 bool brcmf_sdiod_freezing(struct brcmf_sdio_dev *sdiodev) 838 { 839 return IS_ENABLED(CONFIG_PM_SLEEP) && 840 atomic_read(&sdiodev->freezer->freezing); 841 } 842 843 void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev *sdiodev) 844 { 845 if (!brcmf_sdiod_freezing(sdiodev)) 846 return; 847 sdiodev->freezer->frozen_count++; 848 wake_up(&sdiodev->freezer->thread_freeze); 849 wait_for_completion(&sdiodev->freezer->resumed); 850 } 851 852 void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev *sdiodev) 853 { 854 if (IS_ENABLED(CONFIG_PM_SLEEP)) 855 atomic_inc(&sdiodev->freezer->thread_count); 856 } 857 858 void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev *sdiodev) 859 { 860 if (IS_ENABLED(CONFIG_PM_SLEEP)) 861 atomic_dec(&sdiodev->freezer->thread_count); 862 } 863 864 int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev) 865 { 866 sdiodev->state = BRCMF_SDIOD_DOWN; 867 if (sdiodev->bus) { 868 brcmf_sdio_remove(sdiodev->bus); 869 sdiodev->bus = NULL; 870 } 871 872 brcmf_sdiod_freezer_detach(sdiodev); 873 874 /* Disable functions 2 then 1. */ 875 sdio_claim_host(sdiodev->func1); 876 sdio_disable_func(sdiodev->func2); 877 sdio_disable_func(sdiodev->func1); 878 sdio_release_host(sdiodev->func1); 879 880 sg_free_table(&sdiodev->sgtable); 881 sdiodev->sbwad = 0; 882 883 pm_runtime_allow(sdiodev->func1->card->host->parent); 884 return 0; 885 } 886 887 static void brcmf_sdiod_host_fixup(struct mmc_host *host) 888 { 889 /* runtime-pm powers off the device */ 890 pm_runtime_forbid(host->parent); 891 /* avoid removal detection upon resume */ 892 host->caps |= MMC_CAP_NONREMOVABLE; 893 } 894 895 int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev) 896 { 897 int ret = 0; 898 unsigned int f2_blksz = SDIO_FUNC2_BLOCKSIZE; 899 900 sdio_claim_host(sdiodev->func1); 901 902 ret = sdio_set_block_size(sdiodev->func1, SDIO_FUNC1_BLOCKSIZE); 903 if (ret) { 904 brcmf_err("Failed to set F1 blocksize\n"); 905 sdio_release_host(sdiodev->func1); 906 return ret; 907 } 908 switch (sdiodev->func2->device) { 909 case SDIO_DEVICE_ID_BROADCOM_CYPRESS_4373: 910 f2_blksz = SDIO_4373_FUNC2_BLOCKSIZE; 911 break; 912 case SDIO_DEVICE_ID_BROADCOM_4359: 913 case SDIO_DEVICE_ID_BROADCOM_4354: 914 case SDIO_DEVICE_ID_BROADCOM_4356: 915 f2_blksz = SDIO_435X_FUNC2_BLOCKSIZE; 916 break; 917 case SDIO_DEVICE_ID_BROADCOM_4329: 918 f2_blksz = SDIO_4329_FUNC2_BLOCKSIZE; 919 break; 920 default: 921 break; 922 } 923 924 ret = sdio_set_block_size(sdiodev->func2, f2_blksz); 925 if (ret) { 926 brcmf_err("Failed to set F2 blocksize\n"); 927 sdio_release_host(sdiodev->func1); 928 return ret; 929 } else { 930 brcmf_dbg(SDIO, "set F2 blocksize to %d\n", f2_blksz); 931 } 932 933 /* increase F2 timeout */ 934 sdiodev->func2->enable_timeout = SDIO_WAIT_F2RDY; 935 936 /* Enable Function 1 */ 937 ret = sdio_enable_func(sdiodev->func1); 938 sdio_release_host(sdiodev->func1); 939 if (ret) { 940 brcmf_err("Failed to enable F1: err=%d\n", ret); 941 goto out; 942 } 943 944 ret = brcmf_sdiod_freezer_attach(sdiodev); 945 if (ret) 946 goto out; 947 948 /* try to attach to the target device */ 949 sdiodev->bus = brcmf_sdio_probe(sdiodev); 950 if (!sdiodev->bus) { 951 ret = -ENODEV; 952 goto out; 953 } 954 brcmf_sdiod_host_fixup(sdiodev->func2->card->host); 955 out: 956 if (ret) 957 brcmf_sdiod_remove(sdiodev); 958 959 return ret; 960 } 961 962 #define BRCMF_SDIO_DEVICE(dev_id) \ 963 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)} 964 965 /* devices we support, null terminated */ 966 static const struct sdio_device_id brcmf_sdmmc_ids[] = { 967 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143), 968 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241), 969 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329), 970 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330), 971 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334), 972 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340), 973 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341), 974 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362), 975 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43364), 976 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339), 977 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4339), 978 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430), 979 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345), 980 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43455), 981 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354), 982 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4356), 983 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4359), 984 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_4373), 985 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_43012), 986 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_43439), 987 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_43752), 988 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_89359), 989 { /* end: all zeroes */ } 990 }; 991 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids); 992 993 994 static void brcmf_sdiod_acpi_set_power_manageable(struct device *dev, 995 int val) 996 { 997 #if IS_ENABLED(CONFIG_ACPI) 998 struct acpi_device *adev; 999 1000 adev = ACPI_COMPANION(dev); 1001 if (adev) 1002 adev->flags.power_manageable = 0; 1003 #endif 1004 } 1005 1006 static int brcmf_ops_sdio_probe(struct sdio_func *func, 1007 const struct sdio_device_id *id) 1008 { 1009 int err; 1010 struct brcmf_sdio_dev *sdiodev; 1011 struct brcmf_bus *bus_if; 1012 struct device *dev; 1013 1014 brcmf_dbg(SDIO, "Enter\n"); 1015 brcmf_dbg(SDIO, "Class=%x\n", func->class); 1016 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); 1017 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); 1018 brcmf_dbg(SDIO, "Function#: %d\n", func->num); 1019 1020 dev = &func->dev; 1021 1022 /* Set MMC_QUIRK_LENIENT_FN0 for this card */ 1023 func->card->quirks |= MMC_QUIRK_LENIENT_FN0; 1024 1025 /* prohibit ACPI power management for this device */ 1026 brcmf_sdiod_acpi_set_power_manageable(dev, 0); 1027 1028 /* Consume func num 1 but dont do anything with it. */ 1029 if (func->num == 1) 1030 return 0; 1031 1032 /* Ignore anything but func 2 */ 1033 if (func->num != 2) 1034 return -ENODEV; 1035 1036 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL); 1037 if (!bus_if) 1038 return -ENOMEM; 1039 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL); 1040 if (!sdiodev) { 1041 kfree(bus_if); 1042 return -ENOMEM; 1043 } 1044 1045 /* store refs to functions used. mmc_card does 1046 * not hold the F0 function pointer. 1047 */ 1048 sdiodev->func1 = func->card->sdio_func[0]; 1049 sdiodev->func2 = func; 1050 1051 sdiodev->bus_if = bus_if; 1052 bus_if->bus_priv.sdio = sdiodev; 1053 bus_if->proto_type = BRCMF_PROTO_BCDC; 1054 dev_set_drvdata(&func->dev, bus_if); 1055 dev_set_drvdata(&sdiodev->func1->dev, bus_if); 1056 sdiodev->dev = &sdiodev->func1->dev; 1057 1058 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN); 1059 1060 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n"); 1061 err = brcmf_sdiod_probe(sdiodev); 1062 if (err) { 1063 brcmf_err("F2 error, probe failed %d...\n", err); 1064 goto fail; 1065 } 1066 1067 brcmf_dbg(SDIO, "F2 init completed...\n"); 1068 return 0; 1069 1070 fail: 1071 dev_set_drvdata(&func->dev, NULL); 1072 dev_set_drvdata(&sdiodev->func1->dev, NULL); 1073 kfree(sdiodev); 1074 kfree(bus_if); 1075 return err; 1076 } 1077 1078 static void brcmf_ops_sdio_remove(struct sdio_func *func) 1079 { 1080 struct brcmf_bus *bus_if; 1081 struct brcmf_sdio_dev *sdiodev; 1082 1083 brcmf_dbg(SDIO, "Enter\n"); 1084 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); 1085 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); 1086 brcmf_dbg(SDIO, "Function: %d\n", func->num); 1087 1088 bus_if = dev_get_drvdata(&func->dev); 1089 if (bus_if) { 1090 sdiodev = bus_if->bus_priv.sdio; 1091 1092 /* start by unregistering irqs */ 1093 brcmf_sdiod_intr_unregister(sdiodev); 1094 1095 if (func->num != 1) 1096 return; 1097 1098 /* only proceed with rest of cleanup if func 1 */ 1099 brcmf_sdiod_remove(sdiodev); 1100 1101 dev_set_drvdata(&sdiodev->func1->dev, NULL); 1102 dev_set_drvdata(&sdiodev->func2->dev, NULL); 1103 1104 kfree(bus_if); 1105 kfree(sdiodev); 1106 } 1107 1108 brcmf_dbg(SDIO, "Exit\n"); 1109 } 1110 1111 void brcmf_sdio_wowl_config(struct device *dev, bool enabled) 1112 { 1113 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1114 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; 1115 mmc_pm_flag_t pm_caps = sdio_get_host_pm_caps(sdiodev->func1); 1116 1117 /* Power must be preserved to be able to support WOWL. */ 1118 if (!(pm_caps & MMC_PM_KEEP_POWER)) 1119 goto notsup; 1120 1121 if (sdiodev->settings->bus.sdio.oob_irq_supported || 1122 pm_caps & MMC_PM_WAKE_SDIO_IRQ) { 1123 sdiodev->wowl_enabled = enabled; 1124 brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled); 1125 return; 1126 } 1127 1128 notsup: 1129 brcmf_dbg(SDIO, "WOWL not supported\n"); 1130 } 1131 1132 static int brcmf_ops_sdio_suspend(struct device *dev) 1133 { 1134 struct sdio_func *func; 1135 struct brcmf_bus *bus_if; 1136 struct brcmf_sdio_dev *sdiodev; 1137 mmc_pm_flag_t sdio_flags; 1138 int ret = 0; 1139 1140 func = container_of(dev, struct sdio_func, dev); 1141 brcmf_dbg(SDIO, "Enter: F%d\n", func->num); 1142 if (func->num != 1) 1143 return 0; 1144 1145 1146 bus_if = dev_get_drvdata(dev); 1147 sdiodev = bus_if->bus_priv.sdio; 1148 1149 if (sdiodev->wowl_enabled) { 1150 brcmf_sdiod_freezer_on(sdiodev); 1151 brcmf_sdio_wd_timer(sdiodev->bus, 0); 1152 1153 sdio_flags = MMC_PM_KEEP_POWER; 1154 if (sdiodev->settings->bus.sdio.oob_irq_supported) 1155 enable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr); 1156 else 1157 sdio_flags |= MMC_PM_WAKE_SDIO_IRQ; 1158 1159 if (sdio_set_host_pm_flags(sdiodev->func1, sdio_flags)) 1160 brcmf_err("Failed to set pm_flags %x\n", sdio_flags); 1161 1162 } else { 1163 /* power will be cut so remove device, probe again in resume */ 1164 brcmf_sdiod_intr_unregister(sdiodev); 1165 ret = brcmf_sdiod_remove(sdiodev); 1166 if (ret) 1167 brcmf_err("Failed to remove device on suspend\n"); 1168 } 1169 1170 return ret; 1171 } 1172 1173 static int brcmf_ops_sdio_resume(struct device *dev) 1174 { 1175 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1176 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; 1177 struct sdio_func *func = container_of(dev, struct sdio_func, dev); 1178 int ret = 0; 1179 1180 brcmf_dbg(SDIO, "Enter: F%d\n", func->num); 1181 if (func->num != 2) 1182 return 0; 1183 1184 if (!sdiodev->wowl_enabled) { 1185 /* bus was powered off and device removed, probe again */ 1186 ret = brcmf_sdiod_probe(sdiodev); 1187 if (ret) 1188 brcmf_err("Failed to probe device on resume\n"); 1189 } else { 1190 if (sdiodev->settings->bus.sdio.oob_irq_supported) 1191 disable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr); 1192 1193 brcmf_sdiod_freezer_off(sdiodev); 1194 } 1195 1196 return ret; 1197 } 1198 1199 static DEFINE_SIMPLE_DEV_PM_OPS(brcmf_sdio_pm_ops, 1200 brcmf_ops_sdio_suspend, 1201 brcmf_ops_sdio_resume); 1202 1203 static struct sdio_driver brcmf_sdmmc_driver = { 1204 .probe = brcmf_ops_sdio_probe, 1205 .remove = brcmf_ops_sdio_remove, 1206 .name = KBUILD_MODNAME, 1207 .id_table = brcmf_sdmmc_ids, 1208 .drv = { 1209 .owner = THIS_MODULE, 1210 .pm = pm_sleep_ptr(&brcmf_sdio_pm_ops), 1211 .coredump = brcmf_dev_coredump, 1212 }, 1213 }; 1214 1215 int brcmf_sdio_register(void) 1216 { 1217 return sdio_register_driver(&brcmf_sdmmc_driver); 1218 } 1219 1220 void brcmf_sdio_exit(void) 1221 { 1222 brcmf_dbg(SDIO, "Enter\n"); 1223 1224 sdio_unregister_driver(&brcmf_sdmmc_driver); 1225 } 1226 1227