1 /* 2 * Copyright (c) 2010 Broadcom Corporation 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 /* ****************** SDIO CARD Interface Functions **************************/ 17 18 #include <linux/types.h> 19 #include <linux/netdevice.h> 20 #include <linux/pci.h> 21 #include <linux/pci_ids.h> 22 #include <linux/sched.h> 23 #include <linux/completion.h> 24 #include <linux/scatterlist.h> 25 #include <linux/mmc/sdio.h> 26 #include <linux/mmc/core.h> 27 #include <linux/mmc/sdio_func.h> 28 #include <linux/mmc/card.h> 29 #include <linux/mmc/host.h> 30 #include <linux/pm_runtime.h> 31 #include <linux/suspend.h> 32 #include <linux/errno.h> 33 #include <linux/module.h> 34 #include <linux/acpi.h> 35 #include <net/cfg80211.h> 36 37 #include <defs.h> 38 #include <brcm_hw_ids.h> 39 #include <brcmu_utils.h> 40 #include <brcmu_wifi.h> 41 #include <chipcommon.h> 42 #include <soc.h> 43 #include "chip.h" 44 #include "bus.h" 45 #include "debug.h" 46 #include "sdio.h" 47 #include "core.h" 48 #include "common.h" 49 50 #define SDIOH_API_ACCESS_RETRY_LIMIT 2 51 52 #define DMA_ALIGN_MASK 0x03 53 54 #define SDIO_FUNC1_BLOCKSIZE 64 55 #define SDIO_FUNC2_BLOCKSIZE 512 56 /* Maximum milliseconds to wait for F2 to come up */ 57 #define SDIO_WAIT_F2RDY 3000 58 59 #define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */ 60 61 struct brcmf_sdiod_freezer { 62 atomic_t freezing; 63 atomic_t thread_count; 64 u32 frozen_count; 65 wait_queue_head_t thread_freeze; 66 struct completion resumed; 67 }; 68 69 static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id) 70 { 71 struct brcmf_bus *bus_if = dev_get_drvdata(dev_id); 72 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; 73 74 brcmf_dbg(INTR, "OOB intr triggered\n"); 75 76 /* out-of-band interrupt is level-triggered which won't 77 * be cleared until dpc 78 */ 79 if (sdiodev->irq_en) { 80 disable_irq_nosync(irq); 81 sdiodev->irq_en = false; 82 } 83 84 brcmf_sdio_isr(sdiodev->bus); 85 86 return IRQ_HANDLED; 87 } 88 89 static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func) 90 { 91 struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev); 92 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; 93 94 brcmf_dbg(INTR, "IB intr triggered\n"); 95 96 brcmf_sdio_isr(sdiodev->bus); 97 } 98 99 /* dummy handler for SDIO function 2 interrupt */ 100 static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func) 101 { 102 } 103 104 int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev) 105 { 106 struct brcmfmac_sdio_pd *pdata; 107 int ret = 0; 108 u8 data; 109 u32 addr, gpiocontrol; 110 unsigned long flags; 111 112 pdata = &sdiodev->settings->bus.sdio; 113 if (pdata->oob_irq_supported) { 114 brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n", 115 pdata->oob_irq_nr); 116 ret = request_irq(pdata->oob_irq_nr, brcmf_sdiod_oob_irqhandler, 117 pdata->oob_irq_flags, "brcmf_oob_intr", 118 &sdiodev->func[1]->dev); 119 if (ret != 0) { 120 brcmf_err("request_irq failed %d\n", ret); 121 return ret; 122 } 123 sdiodev->oob_irq_requested = true; 124 spin_lock_init(&sdiodev->irq_en_lock); 125 spin_lock_irqsave(&sdiodev->irq_en_lock, flags); 126 sdiodev->irq_en = true; 127 spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags); 128 129 ret = enable_irq_wake(pdata->oob_irq_nr); 130 if (ret != 0) { 131 brcmf_err("enable_irq_wake failed %d\n", ret); 132 return ret; 133 } 134 sdiodev->irq_wake = true; 135 136 sdio_claim_host(sdiodev->func[1]); 137 138 if (sdiodev->bus_if->chip == BRCM_CC_43362_CHIP_ID) { 139 /* assign GPIO to SDIO core */ 140 addr = CORE_CC_REG(SI_ENUM_BASE, gpiocontrol); 141 gpiocontrol = brcmf_sdiod_regrl(sdiodev, addr, &ret); 142 gpiocontrol |= 0x2; 143 brcmf_sdiod_regwl(sdiodev, addr, gpiocontrol, &ret); 144 145 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_SELECT, 0xf, 146 &ret); 147 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_OUT, 0, &ret); 148 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_EN, 0x2, &ret); 149 } 150 151 /* must configure SDIO_CCCR_IENx to enable irq */ 152 data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret); 153 data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1; 154 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret); 155 156 /* redirect, configure and enable io for interrupt signal */ 157 data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE; 158 if (pdata->oob_irq_flags & IRQF_TRIGGER_HIGH) 159 data |= SDIO_SEPINT_ACT_HI; 160 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret); 161 162 sdio_release_host(sdiodev->func[1]); 163 } else { 164 brcmf_dbg(SDIO, "Entering\n"); 165 sdio_claim_host(sdiodev->func[1]); 166 sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler); 167 sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler); 168 sdio_release_host(sdiodev->func[1]); 169 sdiodev->sd_irq_requested = true; 170 } 171 172 return 0; 173 } 174 175 void brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev) 176 { 177 178 brcmf_dbg(SDIO, "Entering oob=%d sd=%d\n", 179 sdiodev->oob_irq_requested, 180 sdiodev->sd_irq_requested); 181 182 if (sdiodev->oob_irq_requested) { 183 struct brcmfmac_sdio_pd *pdata; 184 185 pdata = &sdiodev->settings->bus.sdio; 186 sdio_claim_host(sdiodev->func[1]); 187 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL); 188 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL); 189 sdio_release_host(sdiodev->func[1]); 190 191 sdiodev->oob_irq_requested = false; 192 if (sdiodev->irq_wake) { 193 disable_irq_wake(pdata->oob_irq_nr); 194 sdiodev->irq_wake = false; 195 } 196 free_irq(pdata->oob_irq_nr, &sdiodev->func[1]->dev); 197 sdiodev->irq_en = false; 198 sdiodev->oob_irq_requested = false; 199 } 200 201 if (sdiodev->sd_irq_requested) { 202 sdio_claim_host(sdiodev->func[1]); 203 sdio_release_irq(sdiodev->func[2]); 204 sdio_release_irq(sdiodev->func[1]); 205 sdio_release_host(sdiodev->func[1]); 206 sdiodev->sd_irq_requested = false; 207 } 208 } 209 210 void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev, 211 enum brcmf_sdiod_state state) 212 { 213 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM || 214 state == sdiodev->state) 215 return; 216 217 brcmf_dbg(TRACE, "%d -> %d\n", sdiodev->state, state); 218 switch (sdiodev->state) { 219 case BRCMF_SDIOD_DATA: 220 /* any other state means bus interface is down */ 221 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN); 222 break; 223 case BRCMF_SDIOD_DOWN: 224 /* transition from DOWN to DATA means bus interface is up */ 225 if (state == BRCMF_SDIOD_DATA) 226 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_UP); 227 break; 228 default: 229 break; 230 } 231 sdiodev->state = state; 232 } 233 234 static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func, 235 uint regaddr, u8 byte) 236 { 237 int err_ret; 238 239 /* 240 * Can only directly write to some F0 registers. 241 * Handle CCCR_IENx and CCCR_ABORT command 242 * as a special case. 243 */ 244 if ((regaddr == SDIO_CCCR_ABORT) || 245 (regaddr == SDIO_CCCR_IENx)) 246 sdio_writeb(func, byte, regaddr, &err_ret); 247 else 248 sdio_f0_writeb(func, byte, regaddr, &err_ret); 249 250 return err_ret; 251 } 252 253 static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn, 254 u32 addr, u8 regsz, void *data, bool write) 255 { 256 struct sdio_func *func; 257 int ret = -EINVAL; 258 259 brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n", 260 write, fn, addr, regsz); 261 262 /* only allow byte access on F0 */ 263 if (WARN_ON(regsz > 1 && !fn)) 264 return -EINVAL; 265 func = sdiodev->func[fn]; 266 267 switch (regsz) { 268 case sizeof(u8): 269 if (write) { 270 if (fn) 271 sdio_writeb(func, *(u8 *)data, addr, &ret); 272 else 273 ret = brcmf_sdiod_f0_writeb(func, addr, 274 *(u8 *)data); 275 } else { 276 if (fn) 277 *(u8 *)data = sdio_readb(func, addr, &ret); 278 else 279 *(u8 *)data = sdio_f0_readb(func, addr, &ret); 280 } 281 break; 282 case sizeof(u16): 283 if (write) 284 sdio_writew(func, *(u16 *)data, addr, &ret); 285 else 286 *(u16 *)data = sdio_readw(func, addr, &ret); 287 break; 288 case sizeof(u32): 289 if (write) 290 sdio_writel(func, *(u32 *)data, addr, &ret); 291 else 292 *(u32 *)data = sdio_readl(func, addr, &ret); 293 break; 294 default: 295 brcmf_err("invalid size: %d\n", regsz); 296 break; 297 } 298 299 if (ret) 300 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n", 301 write ? "write" : "read", fn, addr, ret); 302 303 return ret; 304 } 305 306 static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr, 307 u8 regsz, void *data, bool write) 308 { 309 u8 func; 310 s32 retry = 0; 311 int ret; 312 313 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM) 314 return -ENOMEDIUM; 315 316 /* 317 * figure out how to read the register based on address range 318 * 0x00 ~ 0x7FF: function 0 CCCR and FBR 319 * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers 320 * The rest: function 1 silicon backplane core registers 321 */ 322 if ((addr & ~REG_F0_REG_MASK) == 0) 323 func = SDIO_FUNC_0; 324 else 325 func = SDIO_FUNC_1; 326 327 do { 328 if (!write) 329 memset(data, 0, regsz); 330 /* for retry wait for 1 ms till bus get settled down */ 331 if (retry) 332 usleep_range(1000, 2000); 333 ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz, 334 data, write); 335 } while (ret != 0 && ret != -ENOMEDIUM && 336 retry++ < SDIOH_API_ACCESS_RETRY_LIMIT); 337 338 if (ret == -ENOMEDIUM) 339 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); 340 else if (ret != 0) { 341 /* 342 * SleepCSR register access can fail when 343 * waking up the device so reduce this noise 344 * in the logs. 345 */ 346 if (addr != SBSDIO_FUNC1_SLEEPCSR) 347 brcmf_err("failed to %s data F%d@0x%05x, err: %d\n", 348 write ? "write" : "read", func, addr, ret); 349 else 350 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n", 351 write ? "write" : "read", func, addr, ret); 352 } 353 return ret; 354 } 355 356 static int 357 brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address) 358 { 359 int err = 0, i; 360 u8 addr[3]; 361 362 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM) 363 return -ENOMEDIUM; 364 365 addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK; 366 addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK; 367 addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK; 368 369 for (i = 0; i < 3; i++) { 370 err = brcmf_sdiod_regrw_helper(sdiodev, 371 SBSDIO_FUNC1_SBADDRLOW + i, 372 sizeof(u8), &addr[i], true); 373 if (err) { 374 brcmf_err("failed at addr: 0x%0x\n", 375 SBSDIO_FUNC1_SBADDRLOW + i); 376 break; 377 } 378 } 379 380 return err; 381 } 382 383 static int 384 brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr) 385 { 386 uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK; 387 int err = 0; 388 389 if (bar0 != sdiodev->sbwad) { 390 err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0); 391 if (err) 392 return err; 393 394 sdiodev->sbwad = bar0; 395 } 396 397 *addr &= SBSDIO_SB_OFT_ADDR_MASK; 398 399 if (width == 4) 400 *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; 401 402 return 0; 403 } 404 405 u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) 406 { 407 u8 data; 408 int retval; 409 410 brcmf_dbg(SDIO, "addr:0x%08x\n", addr); 411 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, 412 false); 413 brcmf_dbg(SDIO, "data:0x%02x\n", data); 414 415 if (ret) 416 *ret = retval; 417 418 return data; 419 } 420 421 u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) 422 { 423 u32 data; 424 int retval; 425 426 brcmf_dbg(SDIO, "addr:0x%08x\n", addr); 427 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr); 428 if (retval) 429 goto done; 430 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, 431 false); 432 brcmf_dbg(SDIO, "data:0x%08x\n", data); 433 434 done: 435 if (ret) 436 *ret = retval; 437 438 return data; 439 } 440 441 void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, 442 u8 data, int *ret) 443 { 444 int retval; 445 446 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data); 447 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, 448 true); 449 if (ret) 450 *ret = retval; 451 } 452 453 void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, 454 u32 data, int *ret) 455 { 456 int retval; 457 458 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data); 459 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr); 460 if (retval) 461 goto done; 462 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, 463 true); 464 465 done: 466 if (ret) 467 *ret = retval; 468 } 469 470 static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn, 471 bool write, u32 addr, struct sk_buff *pkt) 472 { 473 unsigned int req_sz; 474 int err; 475 476 /* Single skb use the standard mmc interface */ 477 req_sz = pkt->len + 3; 478 req_sz &= (uint)~3; 479 480 if (write) 481 err = sdio_memcpy_toio(sdiodev->func[fn], addr, 482 ((u8 *)(pkt->data)), req_sz); 483 else if (fn == 1) 484 err = sdio_memcpy_fromio(sdiodev->func[fn], ((u8 *)(pkt->data)), 485 addr, req_sz); 486 else 487 /* function 2 read is FIFO operation */ 488 err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr, 489 req_sz); 490 if (err == -ENOMEDIUM) 491 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); 492 return err; 493 } 494 495 /** 496 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access 497 * @sdiodev: brcmfmac sdio device 498 * @fn: SDIO function number 499 * @write: direction flag 500 * @addr: dongle memory address as source/destination 501 * @pkt: skb pointer 502 * 503 * This function takes the respbonsibility as the interface function to MMC 504 * stack for block data access. It assumes that the skb passed down by the 505 * caller has already been padded and aligned. 506 */ 507 static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn, 508 bool write, u32 addr, 509 struct sk_buff_head *pktlist) 510 { 511 unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset; 512 unsigned int max_req_sz, orig_offset, dst_offset; 513 unsigned short max_seg_cnt, seg_sz; 514 unsigned char *pkt_data, *orig_data, *dst_data; 515 struct sk_buff *pkt_next = NULL, *local_pkt_next; 516 struct sk_buff_head local_list, *target_list; 517 struct mmc_request mmc_req; 518 struct mmc_command mmc_cmd; 519 struct mmc_data mmc_dat; 520 struct scatterlist *sgl; 521 int ret = 0; 522 523 if (!pktlist->qlen) 524 return -EINVAL; 525 526 target_list = pktlist; 527 /* for host with broken sg support, prepare a page aligned list */ 528 __skb_queue_head_init(&local_list); 529 if (!write && sdiodev->settings->bus.sdio.broken_sg_support) { 530 req_sz = 0; 531 skb_queue_walk(pktlist, pkt_next) 532 req_sz += pkt_next->len; 533 req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize); 534 while (req_sz > PAGE_SIZE) { 535 pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE); 536 if (pkt_next == NULL) { 537 ret = -ENOMEM; 538 goto exit; 539 } 540 __skb_queue_tail(&local_list, pkt_next); 541 req_sz -= PAGE_SIZE; 542 } 543 pkt_next = brcmu_pkt_buf_get_skb(req_sz); 544 if (pkt_next == NULL) { 545 ret = -ENOMEM; 546 goto exit; 547 } 548 __skb_queue_tail(&local_list, pkt_next); 549 target_list = &local_list; 550 } 551 552 func_blk_sz = sdiodev->func[fn]->cur_blksize; 553 max_req_sz = sdiodev->max_request_size; 554 max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count, 555 target_list->qlen); 556 seg_sz = target_list->qlen; 557 pkt_offset = 0; 558 pkt_next = target_list->next; 559 560 memset(&mmc_req, 0, sizeof(struct mmc_request)); 561 memset(&mmc_cmd, 0, sizeof(struct mmc_command)); 562 memset(&mmc_dat, 0, sizeof(struct mmc_data)); 563 564 mmc_dat.sg = sdiodev->sgtable.sgl; 565 mmc_dat.blksz = func_blk_sz; 566 mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; 567 mmc_cmd.opcode = SD_IO_RW_EXTENDED; 568 mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */ 569 mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */ 570 mmc_cmd.arg |= 1<<27; /* block mode */ 571 /* for function 1 the addr will be incremented */ 572 mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0; 573 mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC; 574 mmc_req.cmd = &mmc_cmd; 575 mmc_req.data = &mmc_dat; 576 577 while (seg_sz) { 578 req_sz = 0; 579 sg_cnt = 0; 580 sgl = sdiodev->sgtable.sgl; 581 /* prep sg table */ 582 while (pkt_next != (struct sk_buff *)target_list) { 583 pkt_data = pkt_next->data + pkt_offset; 584 sg_data_sz = pkt_next->len - pkt_offset; 585 if (sg_data_sz > sdiodev->max_segment_size) 586 sg_data_sz = sdiodev->max_segment_size; 587 if (sg_data_sz > max_req_sz - req_sz) 588 sg_data_sz = max_req_sz - req_sz; 589 590 sg_set_buf(sgl, pkt_data, sg_data_sz); 591 592 sg_cnt++; 593 sgl = sg_next(sgl); 594 req_sz += sg_data_sz; 595 pkt_offset += sg_data_sz; 596 if (pkt_offset == pkt_next->len) { 597 pkt_offset = 0; 598 pkt_next = pkt_next->next; 599 } 600 601 if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt) 602 break; 603 } 604 seg_sz -= sg_cnt; 605 606 if (req_sz % func_blk_sz != 0) { 607 brcmf_err("sg request length %u is not %u aligned\n", 608 req_sz, func_blk_sz); 609 ret = -ENOTBLK; 610 goto exit; 611 } 612 613 mmc_dat.sg_len = sg_cnt; 614 mmc_dat.blocks = req_sz / func_blk_sz; 615 mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */ 616 mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */ 617 /* incrementing addr for function 1 */ 618 if (fn == 1) 619 addr += req_sz; 620 621 mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card); 622 mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req); 623 624 ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error; 625 if (ret == -ENOMEDIUM) { 626 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); 627 break; 628 } else if (ret != 0) { 629 brcmf_err("CMD53 sg block %s failed %d\n", 630 write ? "write" : "read", ret); 631 ret = -EIO; 632 break; 633 } 634 } 635 636 if (!write && sdiodev->settings->bus.sdio.broken_sg_support) { 637 local_pkt_next = local_list.next; 638 orig_offset = 0; 639 skb_queue_walk(pktlist, pkt_next) { 640 dst_offset = 0; 641 do { 642 req_sz = local_pkt_next->len - orig_offset; 643 req_sz = min_t(uint, pkt_next->len - dst_offset, 644 req_sz); 645 orig_data = local_pkt_next->data + orig_offset; 646 dst_data = pkt_next->data + dst_offset; 647 memcpy(dst_data, orig_data, req_sz); 648 orig_offset += req_sz; 649 dst_offset += req_sz; 650 if (orig_offset == local_pkt_next->len) { 651 orig_offset = 0; 652 local_pkt_next = local_pkt_next->next; 653 } 654 if (dst_offset == pkt_next->len) 655 break; 656 } while (!skb_queue_empty(&local_list)); 657 } 658 } 659 660 exit: 661 sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents); 662 while ((pkt_next = __skb_dequeue(&local_list)) != NULL) 663 brcmu_pkt_buf_free_skb(pkt_next); 664 665 return ret; 666 } 667 668 int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) 669 { 670 struct sk_buff *mypkt; 671 int err; 672 673 mypkt = brcmu_pkt_buf_get_skb(nbytes); 674 if (!mypkt) { 675 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", 676 nbytes); 677 return -EIO; 678 } 679 680 err = brcmf_sdiod_recv_pkt(sdiodev, mypkt); 681 if (!err) 682 memcpy(buf, mypkt->data, nbytes); 683 684 brcmu_pkt_buf_free_skb(mypkt); 685 return err; 686 } 687 688 int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt) 689 { 690 u32 addr = sdiodev->sbwad; 691 int err = 0; 692 693 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len); 694 695 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); 696 if (err) 697 goto done; 698 699 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt); 700 701 done: 702 return err; 703 } 704 705 int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev, 706 struct sk_buff_head *pktq, uint totlen) 707 { 708 struct sk_buff *glom_skb; 709 struct sk_buff *skb; 710 u32 addr = sdiodev->sbwad; 711 int err = 0; 712 713 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", 714 addr, pktq->qlen); 715 716 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); 717 if (err) 718 goto done; 719 720 if (pktq->qlen == 1) 721 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, 722 pktq->next); 723 else if (!sdiodev->sg_support) { 724 glom_skb = brcmu_pkt_buf_get_skb(totlen); 725 if (!glom_skb) 726 return -ENOMEM; 727 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, 728 glom_skb); 729 if (err) { 730 brcmu_pkt_buf_free_skb(glom_skb); 731 goto done; 732 } 733 734 skb_queue_walk(pktq, skb) { 735 memcpy(skb->data, glom_skb->data, skb->len); 736 skb_pull(glom_skb, skb->len); 737 } 738 } else 739 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr, 740 pktq); 741 742 done: 743 return err; 744 } 745 746 int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) 747 { 748 struct sk_buff *mypkt; 749 u32 addr = sdiodev->sbwad; 750 int err; 751 752 mypkt = brcmu_pkt_buf_get_skb(nbytes); 753 if (!mypkt) { 754 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", 755 nbytes); 756 return -EIO; 757 } 758 759 memcpy(mypkt->data, buf, nbytes); 760 761 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); 762 763 if (!err) 764 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr, 765 mypkt); 766 767 brcmu_pkt_buf_free_skb(mypkt); 768 return err; 769 770 } 771 772 int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev, 773 struct sk_buff_head *pktq) 774 { 775 struct sk_buff *skb; 776 u32 addr = sdiodev->sbwad; 777 int err; 778 779 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen); 780 781 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); 782 if (err) 783 return err; 784 785 if (pktq->qlen == 1 || !sdiodev->sg_support) 786 skb_queue_walk(pktq, skb) { 787 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, 788 addr, skb); 789 if (err) 790 break; 791 } 792 else 793 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr, 794 pktq); 795 796 return err; 797 } 798 799 int 800 brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address, 801 u8 *data, uint size) 802 { 803 int bcmerror = 0; 804 struct sk_buff *pkt; 805 u32 sdaddr; 806 uint dsize; 807 808 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); 809 pkt = dev_alloc_skb(dsize); 810 if (!pkt) { 811 brcmf_err("dev_alloc_skb failed: len %d\n", dsize); 812 return -EIO; 813 } 814 pkt->priority = 0; 815 816 /* Determine initial transfer parameters */ 817 sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK; 818 if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK) 819 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr); 820 else 821 dsize = size; 822 823 sdio_claim_host(sdiodev->func[1]); 824 825 /* Do the transfer(s) */ 826 while (size) { 827 /* Set the backplane window to include the start address */ 828 bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address); 829 if (bcmerror) 830 break; 831 832 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n", 833 write ? "write" : "read", dsize, 834 sdaddr, address & SBSDIO_SBWINDOW_MASK); 835 836 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK; 837 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG; 838 839 skb_put(pkt, dsize); 840 if (write) 841 memcpy(pkt->data, data, dsize); 842 bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write, 843 sdaddr, pkt); 844 if (bcmerror) { 845 brcmf_err("membytes transfer failed\n"); 846 break; 847 } 848 if (!write) 849 memcpy(data, pkt->data, dsize); 850 skb_trim(pkt, 0); 851 852 /* Adjust for next transfer (if any) */ 853 size -= dsize; 854 if (size) { 855 data += dsize; 856 address += dsize; 857 sdaddr = 0; 858 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); 859 } 860 } 861 862 dev_kfree_skb(pkt); 863 864 /* Return the window to backplane enumeration space for core access */ 865 if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad)) 866 brcmf_err("FAILED to set window back to 0x%x\n", 867 sdiodev->sbwad); 868 869 sdio_release_host(sdiodev->func[1]); 870 871 return bcmerror; 872 } 873 874 int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn) 875 { 876 char t_func = (char)fn; 877 brcmf_dbg(SDIO, "Enter\n"); 878 879 /* issue abort cmd52 command through F0 */ 880 brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT, 881 sizeof(t_func), &t_func, true); 882 883 brcmf_dbg(SDIO, "Exit\n"); 884 return 0; 885 } 886 887 void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev) 888 { 889 struct sdio_func *func; 890 struct mmc_host *host; 891 uint max_blocks; 892 uint nents; 893 int err; 894 895 func = sdiodev->func[2]; 896 host = func->card->host; 897 sdiodev->sg_support = host->max_segs > 1; 898 max_blocks = min_t(uint, host->max_blk_count, 511u); 899 sdiodev->max_request_size = min_t(uint, host->max_req_size, 900 max_blocks * func->cur_blksize); 901 sdiodev->max_segment_count = min_t(uint, host->max_segs, 902 SG_MAX_SINGLE_ALLOC); 903 sdiodev->max_segment_size = host->max_seg_size; 904 905 if (!sdiodev->sg_support) 906 return; 907 908 nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE, 909 sdiodev->settings->bus.sdio.txglomsz); 910 nents += (nents >> 4) + 1; 911 912 WARN_ON(nents > sdiodev->max_segment_count); 913 914 brcmf_dbg(TRACE, "nents=%d\n", nents); 915 err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL); 916 if (err < 0) { 917 brcmf_err("allocation failed: disable scatter-gather"); 918 sdiodev->sg_support = false; 919 } 920 921 sdiodev->txglomsz = sdiodev->settings->bus.sdio.txglomsz; 922 } 923 924 #ifdef CONFIG_PM_SLEEP 925 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev) 926 { 927 sdiodev->freezer = kzalloc(sizeof(*sdiodev->freezer), GFP_KERNEL); 928 if (!sdiodev->freezer) 929 return -ENOMEM; 930 atomic_set(&sdiodev->freezer->thread_count, 0); 931 atomic_set(&sdiodev->freezer->freezing, 0); 932 init_waitqueue_head(&sdiodev->freezer->thread_freeze); 933 init_completion(&sdiodev->freezer->resumed); 934 return 0; 935 } 936 937 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev) 938 { 939 if (sdiodev->freezer) { 940 WARN_ON(atomic_read(&sdiodev->freezer->freezing)); 941 kfree(sdiodev->freezer); 942 } 943 } 944 945 static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev *sdiodev) 946 { 947 atomic_t *expect = &sdiodev->freezer->thread_count; 948 int res = 0; 949 950 sdiodev->freezer->frozen_count = 0; 951 reinit_completion(&sdiodev->freezer->resumed); 952 atomic_set(&sdiodev->freezer->freezing, 1); 953 brcmf_sdio_trigger_dpc(sdiodev->bus); 954 wait_event(sdiodev->freezer->thread_freeze, 955 atomic_read(expect) == sdiodev->freezer->frozen_count); 956 sdio_claim_host(sdiodev->func[1]); 957 res = brcmf_sdio_sleep(sdiodev->bus, true); 958 sdio_release_host(sdiodev->func[1]); 959 return res; 960 } 961 962 static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev *sdiodev) 963 { 964 sdio_claim_host(sdiodev->func[1]); 965 brcmf_sdio_sleep(sdiodev->bus, false); 966 sdio_release_host(sdiodev->func[1]); 967 atomic_set(&sdiodev->freezer->freezing, 0); 968 complete_all(&sdiodev->freezer->resumed); 969 } 970 971 bool brcmf_sdiod_freezing(struct brcmf_sdio_dev *sdiodev) 972 { 973 return atomic_read(&sdiodev->freezer->freezing); 974 } 975 976 void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev *sdiodev) 977 { 978 if (!brcmf_sdiod_freezing(sdiodev)) 979 return; 980 sdiodev->freezer->frozen_count++; 981 wake_up(&sdiodev->freezer->thread_freeze); 982 wait_for_completion(&sdiodev->freezer->resumed); 983 } 984 985 void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev *sdiodev) 986 { 987 atomic_inc(&sdiodev->freezer->thread_count); 988 } 989 990 void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev *sdiodev) 991 { 992 atomic_dec(&sdiodev->freezer->thread_count); 993 } 994 #else 995 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev) 996 { 997 return 0; 998 } 999 1000 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev) 1001 { 1002 } 1003 #endif /* CONFIG_PM_SLEEP */ 1004 1005 static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev) 1006 { 1007 sdiodev->state = BRCMF_SDIOD_DOWN; 1008 if (sdiodev->bus) { 1009 brcmf_sdio_remove(sdiodev->bus); 1010 sdiodev->bus = NULL; 1011 } 1012 1013 brcmf_sdiod_freezer_detach(sdiodev); 1014 1015 /* Disable Function 2 */ 1016 sdio_claim_host(sdiodev->func[2]); 1017 sdio_disable_func(sdiodev->func[2]); 1018 sdio_release_host(sdiodev->func[2]); 1019 1020 /* Disable Function 1 */ 1021 sdio_claim_host(sdiodev->func[1]); 1022 sdio_disable_func(sdiodev->func[1]); 1023 sdio_release_host(sdiodev->func[1]); 1024 1025 sg_free_table(&sdiodev->sgtable); 1026 sdiodev->sbwad = 0; 1027 1028 pm_runtime_allow(sdiodev->func[1]->card->host->parent); 1029 return 0; 1030 } 1031 1032 static void brcmf_sdiod_host_fixup(struct mmc_host *host) 1033 { 1034 /* runtime-pm powers off the device */ 1035 pm_runtime_forbid(host->parent); 1036 /* avoid removal detection upon resume */ 1037 host->caps |= MMC_CAP_NONREMOVABLE; 1038 } 1039 1040 static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev) 1041 { 1042 int ret = 0; 1043 1044 sdiodev->num_funcs = 2; 1045 1046 sdio_claim_host(sdiodev->func[1]); 1047 1048 ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE); 1049 if (ret) { 1050 brcmf_err("Failed to set F1 blocksize\n"); 1051 sdio_release_host(sdiodev->func[1]); 1052 goto out; 1053 } 1054 ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE); 1055 if (ret) { 1056 brcmf_err("Failed to set F2 blocksize\n"); 1057 sdio_release_host(sdiodev->func[1]); 1058 goto out; 1059 } 1060 1061 /* increase F2 timeout */ 1062 sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY; 1063 1064 /* Enable Function 1 */ 1065 ret = sdio_enable_func(sdiodev->func[1]); 1066 sdio_release_host(sdiodev->func[1]); 1067 if (ret) { 1068 brcmf_err("Failed to enable F1: err=%d\n", ret); 1069 goto out; 1070 } 1071 1072 ret = brcmf_sdiod_freezer_attach(sdiodev); 1073 if (ret) 1074 goto out; 1075 1076 /* try to attach to the target device */ 1077 sdiodev->bus = brcmf_sdio_probe(sdiodev); 1078 if (!sdiodev->bus) { 1079 ret = -ENODEV; 1080 goto out; 1081 } 1082 brcmf_sdiod_host_fixup(sdiodev->func[2]->card->host); 1083 out: 1084 if (ret) 1085 brcmf_sdiod_remove(sdiodev); 1086 1087 return ret; 1088 } 1089 1090 #define BRCMF_SDIO_DEVICE(dev_id) \ 1091 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)} 1092 1093 /* devices we support, null terminated */ 1094 static const struct sdio_device_id brcmf_sdmmc_ids[] = { 1095 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143), 1096 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241), 1097 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329), 1098 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330), 1099 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334), 1100 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340), 1101 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341), 1102 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362), 1103 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339), 1104 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430), 1105 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345), 1106 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354), 1107 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4356), 1108 { /* end: all zeroes */ } 1109 }; 1110 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids); 1111 1112 1113 static void brcmf_sdiod_acpi_set_power_manageable(struct device *dev, 1114 int val) 1115 { 1116 #if IS_ENABLED(CONFIG_ACPI) 1117 struct acpi_device *adev; 1118 1119 adev = ACPI_COMPANION(dev); 1120 if (adev) 1121 adev->flags.power_manageable = 0; 1122 #endif 1123 } 1124 1125 static int brcmf_ops_sdio_probe(struct sdio_func *func, 1126 const struct sdio_device_id *id) 1127 { 1128 int err; 1129 struct brcmf_sdio_dev *sdiodev; 1130 struct brcmf_bus *bus_if; 1131 struct device *dev; 1132 1133 brcmf_dbg(SDIO, "Enter\n"); 1134 brcmf_dbg(SDIO, "Class=%x\n", func->class); 1135 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); 1136 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); 1137 brcmf_dbg(SDIO, "Function#: %d\n", func->num); 1138 1139 dev = &func->dev; 1140 /* prohibit ACPI power management for this device */ 1141 brcmf_sdiod_acpi_set_power_manageable(dev, 0); 1142 1143 /* Consume func num 1 but dont do anything with it. */ 1144 if (func->num == 1) 1145 return 0; 1146 1147 /* Ignore anything but func 2 */ 1148 if (func->num != 2) 1149 return -ENODEV; 1150 1151 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL); 1152 if (!bus_if) 1153 return -ENOMEM; 1154 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL); 1155 if (!sdiodev) { 1156 kfree(bus_if); 1157 return -ENOMEM; 1158 } 1159 1160 /* store refs to functions used. mmc_card does 1161 * not hold the F0 function pointer. 1162 */ 1163 sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL); 1164 sdiodev->func[0]->num = 0; 1165 sdiodev->func[1] = func->card->sdio_func[0]; 1166 sdiodev->func[2] = func; 1167 1168 sdiodev->bus_if = bus_if; 1169 bus_if->bus_priv.sdio = sdiodev; 1170 bus_if->proto_type = BRCMF_PROTO_BCDC; 1171 dev_set_drvdata(&func->dev, bus_if); 1172 dev_set_drvdata(&sdiodev->func[1]->dev, bus_if); 1173 sdiodev->dev = &sdiodev->func[1]->dev; 1174 1175 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN); 1176 1177 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n"); 1178 err = brcmf_sdiod_probe(sdiodev); 1179 if (err) { 1180 brcmf_err("F2 error, probe failed %d...\n", err); 1181 goto fail; 1182 } 1183 1184 brcmf_dbg(SDIO, "F2 init completed...\n"); 1185 return 0; 1186 1187 fail: 1188 dev_set_drvdata(&func->dev, NULL); 1189 dev_set_drvdata(&sdiodev->func[1]->dev, NULL); 1190 kfree(sdiodev->func[0]); 1191 kfree(sdiodev); 1192 kfree(bus_if); 1193 return err; 1194 } 1195 1196 static void brcmf_ops_sdio_remove(struct sdio_func *func) 1197 { 1198 struct brcmf_bus *bus_if; 1199 struct brcmf_sdio_dev *sdiodev; 1200 1201 brcmf_dbg(SDIO, "Enter\n"); 1202 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); 1203 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); 1204 brcmf_dbg(SDIO, "Function: %d\n", func->num); 1205 1206 bus_if = dev_get_drvdata(&func->dev); 1207 if (bus_if) { 1208 sdiodev = bus_if->bus_priv.sdio; 1209 1210 /* start by unregistering irqs */ 1211 brcmf_sdiod_intr_unregister(sdiodev); 1212 1213 if (func->num != 1) 1214 return; 1215 1216 /* only proceed with rest of cleanup if func 1 */ 1217 brcmf_sdiod_remove(sdiodev); 1218 1219 dev_set_drvdata(&sdiodev->func[1]->dev, NULL); 1220 dev_set_drvdata(&sdiodev->func[2]->dev, NULL); 1221 1222 kfree(bus_if); 1223 kfree(sdiodev->func[0]); 1224 kfree(sdiodev); 1225 } 1226 1227 brcmf_dbg(SDIO, "Exit\n"); 1228 } 1229 1230 void brcmf_sdio_wowl_config(struct device *dev, bool enabled) 1231 { 1232 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1233 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; 1234 1235 brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled); 1236 sdiodev->wowl_enabled = enabled; 1237 } 1238 1239 #ifdef CONFIG_PM_SLEEP 1240 static int brcmf_ops_sdio_suspend(struct device *dev) 1241 { 1242 struct sdio_func *func; 1243 struct brcmf_bus *bus_if; 1244 struct brcmf_sdio_dev *sdiodev; 1245 mmc_pm_flag_t sdio_flags; 1246 1247 func = container_of(dev, struct sdio_func, dev); 1248 brcmf_dbg(SDIO, "Enter: F%d\n", func->num); 1249 if (func->num != SDIO_FUNC_1) 1250 return 0; 1251 1252 1253 bus_if = dev_get_drvdata(dev); 1254 sdiodev = bus_if->bus_priv.sdio; 1255 1256 brcmf_sdiod_freezer_on(sdiodev); 1257 brcmf_sdio_wd_timer(sdiodev->bus, 0); 1258 1259 sdio_flags = MMC_PM_KEEP_POWER; 1260 if (sdiodev->wowl_enabled) { 1261 if (sdiodev->settings->bus.sdio.oob_irq_supported) 1262 enable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr); 1263 else 1264 sdio_flags |= MMC_PM_WAKE_SDIO_IRQ; 1265 } 1266 if (sdio_set_host_pm_flags(sdiodev->func[1], sdio_flags)) 1267 brcmf_err("Failed to set pm_flags %x\n", sdio_flags); 1268 return 0; 1269 } 1270 1271 static int brcmf_ops_sdio_resume(struct device *dev) 1272 { 1273 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1274 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; 1275 struct sdio_func *func = container_of(dev, struct sdio_func, dev); 1276 1277 brcmf_dbg(SDIO, "Enter: F%d\n", func->num); 1278 if (func->num != SDIO_FUNC_2) 1279 return 0; 1280 1281 brcmf_sdiod_freezer_off(sdiodev); 1282 return 0; 1283 } 1284 1285 static const struct dev_pm_ops brcmf_sdio_pm_ops = { 1286 .suspend = brcmf_ops_sdio_suspend, 1287 .resume = brcmf_ops_sdio_resume, 1288 }; 1289 #endif /* CONFIG_PM_SLEEP */ 1290 1291 static struct sdio_driver brcmf_sdmmc_driver = { 1292 .probe = brcmf_ops_sdio_probe, 1293 .remove = brcmf_ops_sdio_remove, 1294 .name = KBUILD_MODNAME, 1295 .id_table = brcmf_sdmmc_ids, 1296 .drv = { 1297 .owner = THIS_MODULE, 1298 #ifdef CONFIG_PM_SLEEP 1299 .pm = &brcmf_sdio_pm_ops, 1300 #endif /* CONFIG_PM_SLEEP */ 1301 }, 1302 }; 1303 1304 void brcmf_sdio_register(void) 1305 { 1306 int ret; 1307 1308 ret = sdio_register_driver(&brcmf_sdmmc_driver); 1309 if (ret) 1310 brcmf_err("sdio_register_driver failed: %d\n", ret); 1311 } 1312 1313 void brcmf_sdio_exit(void) 1314 { 1315 brcmf_dbg(SDIO, "Enter\n"); 1316 1317 sdio_unregister_driver(&brcmf_sdmmc_driver); 1318 } 1319 1320