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/platform_device.h> 31#include <linux/platform_data/brcmfmac-sdio.h> 32#include <linux/pm_runtime.h> 33#include <linux/suspend.h> 34#include <linux/errno.h> 35#include <linux/module.h> 36#include <net/cfg80211.h> 37 38#include <defs.h> 39#include <brcm_hw_ids.h> 40#include <brcmu_utils.h> 41#include <brcmu_wifi.h> 42#include <chipcommon.h> 43#include <soc.h> 44#include "chip.h" 45#include "bus.h" 46#include "debug.h" 47#include "sdio.h" 48#include "of.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_TXGLOM_SIZE 32 /* max tx frames in glom chain */ 60#define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */ 61 62struct brcmf_sdiod_freezer { 63 atomic_t freezing; 64 atomic_t thread_count; 65 u32 frozen_count; 66 wait_queue_head_t thread_freeze; 67 struct completion resumed; 68}; 69 70static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE; 71module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0); 72MODULE_PARM_DESC(txglomsz, "maximum tx packet chain size [SDIO]"); 73 74static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id) 75{ 76 struct brcmf_bus *bus_if = dev_get_drvdata(dev_id); 77 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; 78 79 brcmf_dbg(INTR, "OOB intr triggered\n"); 80 81 /* out-of-band interrupt is level-triggered which won't 82 * be cleared until dpc 83 */ 84 if (sdiodev->irq_en) { 85 disable_irq_nosync(irq); 86 sdiodev->irq_en = false; 87 } 88 89 brcmf_sdio_isr(sdiodev->bus); 90 91 return IRQ_HANDLED; 92} 93 94static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func) 95{ 96 struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev); 97 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; 98 99 brcmf_dbg(INTR, "IB intr triggered\n"); 100 101 brcmf_sdio_isr(sdiodev->bus); 102} 103 104/* dummy handler for SDIO function 2 interrupt */ 105static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func) 106{ 107} 108 109int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev) 110{ 111 int ret = 0; 112 u8 data; 113 u32 addr, gpiocontrol; 114 unsigned long flags; 115 116 if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) { 117 brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n", 118 sdiodev->pdata->oob_irq_nr); 119 ret = request_irq(sdiodev->pdata->oob_irq_nr, 120 brcmf_sdiod_oob_irqhandler, 121 sdiodev->pdata->oob_irq_flags, 122 "brcmf_oob_intr", 123 &sdiodev->func[1]->dev); 124 if (ret != 0) { 125 brcmf_err("request_irq failed %d\n", ret); 126 return ret; 127 } 128 sdiodev->oob_irq_requested = true; 129 spin_lock_init(&sdiodev->irq_en_lock); 130 spin_lock_irqsave(&sdiodev->irq_en_lock, flags); 131 sdiodev->irq_en = true; 132 spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags); 133 134 ret = enable_irq_wake(sdiodev->pdata->oob_irq_nr); 135 if (ret != 0) { 136 brcmf_err("enable_irq_wake failed %d\n", ret); 137 return ret; 138 } 139 sdiodev->irq_wake = true; 140 141 sdio_claim_host(sdiodev->func[1]); 142 143 if (sdiodev->bus_if->chip == BRCM_CC_43362_CHIP_ID) { 144 /* assign GPIO to SDIO core */ 145 addr = CORE_CC_REG(SI_ENUM_BASE, gpiocontrol); 146 gpiocontrol = brcmf_sdiod_regrl(sdiodev, addr, &ret); 147 gpiocontrol |= 0x2; 148 brcmf_sdiod_regwl(sdiodev, addr, gpiocontrol, &ret); 149 150 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_SELECT, 0xf, 151 &ret); 152 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_OUT, 0, &ret); 153 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_EN, 0x2, &ret); 154 } 155 156 /* must configure SDIO_CCCR_IENx to enable irq */ 157 data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret); 158 data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1; 159 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret); 160 161 /* redirect, configure and enable io for interrupt signal */ 162 data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE; 163 if (sdiodev->pdata->oob_irq_flags & IRQF_TRIGGER_HIGH) 164 data |= SDIO_SEPINT_ACT_HI; 165 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret); 166 167 sdio_release_host(sdiodev->func[1]); 168 } else { 169 brcmf_dbg(SDIO, "Entering\n"); 170 sdio_claim_host(sdiodev->func[1]); 171 sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler); 172 sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler); 173 sdio_release_host(sdiodev->func[1]); 174 } 175 176 return 0; 177} 178 179int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev) 180{ 181 brcmf_dbg(SDIO, "Entering\n"); 182 183 if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) { 184 sdio_claim_host(sdiodev->func[1]); 185 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL); 186 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL); 187 sdio_release_host(sdiodev->func[1]); 188 189 if (sdiodev->oob_irq_requested) { 190 sdiodev->oob_irq_requested = false; 191 if (sdiodev->irq_wake) { 192 disable_irq_wake(sdiodev->pdata->oob_irq_nr); 193 sdiodev->irq_wake = false; 194 } 195 free_irq(sdiodev->pdata->oob_irq_nr, 196 &sdiodev->func[1]->dev); 197 sdiodev->irq_en = false; 198 } 199 } else { 200 sdio_claim_host(sdiodev->func[1]); 201 sdio_release_irq(sdiodev->func[2]); 202 sdio_release_irq(sdiodev->func[1]); 203 sdio_release_host(sdiodev->func[1]); 204 } 205 206 return 0; 207} 208 209void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev, 210 enum brcmf_sdiod_state state) 211{ 212 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM || 213 state == sdiodev->state) 214 return; 215 216 brcmf_dbg(TRACE, "%d -> %d\n", sdiodev->state, state); 217 switch (sdiodev->state) { 218 case BRCMF_SDIOD_DATA: 219 /* any other state means bus interface is down */ 220 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN); 221 break; 222 case BRCMF_SDIOD_DOWN: 223 /* transition from DOWN to DATA means bus interface is up */ 224 if (state == BRCMF_SDIOD_DATA) 225 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_UP); 226 break; 227 default: 228 break; 229 } 230 sdiodev->state = state; 231} 232 233static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func, 234 uint regaddr, u8 byte) 235{ 236 int err_ret; 237 238 /* 239 * Can only directly write to some F0 registers. 240 * Handle CCCR_IENx and CCCR_ABORT command 241 * as a special case. 242 */ 243 if ((regaddr == SDIO_CCCR_ABORT) || 244 (regaddr == SDIO_CCCR_IENx)) 245 sdio_writeb(func, byte, regaddr, &err_ret); 246 else 247 sdio_f0_writeb(func, byte, regaddr, &err_ret); 248 249 return err_ret; 250} 251 252static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn, 253 u32 addr, u8 regsz, void *data, bool write) 254{ 255 struct sdio_func *func; 256 int ret; 257 258 brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n", 259 write, fn, addr, regsz); 260 261 /* only allow byte access on F0 */ 262 if (WARN_ON(regsz > 1 && !fn)) 263 return -EINVAL; 264 func = sdiodev->func[fn]; 265 266 switch (regsz) { 267 case sizeof(u8): 268 if (write) { 269 if (fn) 270 sdio_writeb(func, *(u8 *)data, addr, &ret); 271 else 272 ret = brcmf_sdiod_f0_writeb(func, addr, 273 *(u8 *)data); 274 } else { 275 if (fn) 276 *(u8 *)data = sdio_readb(func, addr, &ret); 277 else 278 *(u8 *)data = sdio_f0_readb(func, addr, &ret); 279 } 280 break; 281 case sizeof(u16): 282 if (write) 283 sdio_writew(func, *(u16 *)data, addr, &ret); 284 else 285 *(u16 *)data = sdio_readw(func, addr, &ret); 286 break; 287 case sizeof(u32): 288 if (write) 289 sdio_writel(func, *(u32 *)data, addr, &ret); 290 else 291 *(u32 *)data = sdio_readl(func, addr, &ret); 292 break; 293 default: 294 brcmf_err("invalid size: %d\n", regsz); 295 break; 296 } 297 298 if (ret) 299 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n", 300 write ? "write" : "read", fn, addr, ret); 301 302 return ret; 303} 304 305static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr, 306 u8 regsz, void *data, bool write) 307{ 308 u8 func; 309 s32 retry = 0; 310 int ret; 311 312 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM) 313 return -ENOMEDIUM; 314 315 /* 316 * figure out how to read the register based on address range 317 * 0x00 ~ 0x7FF: function 0 CCCR and FBR 318 * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers 319 * The rest: function 1 silicon backplane core registers 320 */ 321 if ((addr & ~REG_F0_REG_MASK) == 0) 322 func = SDIO_FUNC_0; 323 else 324 func = SDIO_FUNC_1; 325 326 do { 327 if (!write) 328 memset(data, 0, regsz); 329 /* for retry wait for 1 ms till bus get settled down */ 330 if (retry) 331 usleep_range(1000, 2000); 332 ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz, 333 data, write); 334 } while (ret != 0 && ret != -ENOMEDIUM && 335 retry++ < SDIOH_API_ACCESS_RETRY_LIMIT); 336 337 if (ret == -ENOMEDIUM) 338 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); 339 else if (ret != 0) { 340 /* 341 * SleepCSR register access can fail when 342 * waking up the device so reduce this noise 343 * in the logs. 344 */ 345 if (addr != SBSDIO_FUNC1_SLEEPCSR) 346 brcmf_err("failed to %s data F%d@0x%05x, err: %d\n", 347 write ? "write" : "read", func, addr, ret); 348 else 349 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n", 350 write ? "write" : "read", func, addr, ret); 351 } 352 return ret; 353} 354 355static int 356brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address) 357{ 358 int err = 0, i; 359 u8 addr[3]; 360 361 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM) 362 return -ENOMEDIUM; 363 364 addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK; 365 addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK; 366 addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK; 367 368 for (i = 0; i < 3; i++) { 369 err = brcmf_sdiod_regrw_helper(sdiodev, 370 SBSDIO_FUNC1_SBADDRLOW + i, 371 sizeof(u8), &addr[i], true); 372 if (err) { 373 brcmf_err("failed at addr: 0x%0x\n", 374 SBSDIO_FUNC1_SBADDRLOW + i); 375 break; 376 } 377 } 378 379 return err; 380} 381 382static int 383brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr) 384{ 385 uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK; 386 int err = 0; 387 388 if (bar0 != sdiodev->sbwad) { 389 err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0); 390 if (err) 391 return err; 392 393 sdiodev->sbwad = bar0; 394 } 395 396 *addr &= SBSDIO_SB_OFT_ADDR_MASK; 397 398 if (width == 4) 399 *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; 400 401 return 0; 402} 403 404u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) 405{ 406 u8 data; 407 int retval; 408 409 brcmf_dbg(SDIO, "addr:0x%08x\n", addr); 410 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, 411 false); 412 brcmf_dbg(SDIO, "data:0x%02x\n", data); 413 414 if (ret) 415 *ret = retval; 416 417 return data; 418} 419 420u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) 421{ 422 u32 data; 423 int retval; 424 425 brcmf_dbg(SDIO, "addr:0x%08x\n", addr); 426 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr); 427 if (retval) 428 goto done; 429 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, 430 false); 431 brcmf_dbg(SDIO, "data:0x%08x\n", data); 432 433done: 434 if (ret) 435 *ret = retval; 436 437 return data; 438} 439 440void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, 441 u8 data, int *ret) 442{ 443 int retval; 444 445 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data); 446 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, 447 true); 448 if (ret) 449 *ret = retval; 450} 451 452void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, 453 u32 data, int *ret) 454{ 455 int retval; 456 457 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data); 458 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr); 459 if (retval) 460 goto done; 461 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, 462 true); 463 464done: 465 if (ret) 466 *ret = retval; 467} 468 469static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn, 470 bool write, u32 addr, struct sk_buff *pkt) 471{ 472 unsigned int req_sz; 473 int err; 474 475 /* Single skb use the standard mmc interface */ 476 req_sz = pkt->len + 3; 477 req_sz &= (uint)~3; 478 479 if (write) 480 err = sdio_memcpy_toio(sdiodev->func[fn], addr, 481 ((u8 *)(pkt->data)), req_sz); 482 else if (fn == 1) 483 err = sdio_memcpy_fromio(sdiodev->func[fn], ((u8 *)(pkt->data)), 484 addr, req_sz); 485 else 486 /* function 2 read is FIFO operation */ 487 err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr, 488 req_sz); 489 if (err == -ENOMEDIUM) 490 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); 491 return err; 492} 493 494/** 495 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access 496 * @sdiodev: brcmfmac sdio device 497 * @fn: SDIO function number 498 * @write: direction flag 499 * @addr: dongle memory address as source/destination 500 * @pkt: skb pointer 501 * 502 * This function takes the respbonsibility as the interface function to MMC 503 * stack for block data access. It assumes that the skb passed down by the 504 * caller has already been padded and aligned. 505 */ 506static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn, 507 bool write, u32 addr, 508 struct sk_buff_head *pktlist) 509{ 510 unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset; 511 unsigned int max_req_sz, orig_offset, dst_offset; 512 unsigned short max_seg_cnt, seg_sz; 513 unsigned char *pkt_data, *orig_data, *dst_data; 514 struct sk_buff *pkt_next = NULL, *local_pkt_next; 515 struct sk_buff_head local_list, *target_list; 516 struct mmc_request mmc_req; 517 struct mmc_command mmc_cmd; 518 struct mmc_data mmc_dat; 519 struct scatterlist *sgl; 520 int ret = 0; 521 522 if (!pktlist->qlen) 523 return -EINVAL; 524 525 target_list = pktlist; 526 /* for host with broken sg support, prepare a page aligned list */ 527 __skb_queue_head_init(&local_list); 528 if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) { 529 req_sz = 0; 530 skb_queue_walk(pktlist, pkt_next) 531 req_sz += pkt_next->len; 532 req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize); 533 while (req_sz > PAGE_SIZE) { 534 pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE); 535 if (pkt_next == NULL) { 536 ret = -ENOMEM; 537 goto exit; 538 } 539 __skb_queue_tail(&local_list, pkt_next); 540 req_sz -= PAGE_SIZE; 541 } 542 pkt_next = brcmu_pkt_buf_get_skb(req_sz); 543 if (pkt_next == NULL) { 544 ret = -ENOMEM; 545 goto exit; 546 } 547 __skb_queue_tail(&local_list, pkt_next); 548 target_list = &local_list; 549 } 550 551 func_blk_sz = sdiodev->func[fn]->cur_blksize; 552 max_req_sz = sdiodev->max_request_size; 553 max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count, 554 target_list->qlen); 555 seg_sz = target_list->qlen; 556 pkt_offset = 0; 557 pkt_next = target_list->next; 558 559 memset(&mmc_req, 0, sizeof(struct mmc_request)); 560 memset(&mmc_cmd, 0, sizeof(struct mmc_command)); 561 memset(&mmc_dat, 0, sizeof(struct mmc_data)); 562 563 mmc_dat.sg = sdiodev->sgtable.sgl; 564 mmc_dat.blksz = func_blk_sz; 565 mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; 566 mmc_cmd.opcode = SD_IO_RW_EXTENDED; 567 mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */ 568 mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */ 569 mmc_cmd.arg |= 1<<27; /* block mode */ 570 /* for function 1 the addr will be incremented */ 571 mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0; 572 mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC; 573 mmc_req.cmd = &mmc_cmd; 574 mmc_req.data = &mmc_dat; 575 576 while (seg_sz) { 577 req_sz = 0; 578 sg_cnt = 0; 579 sgl = sdiodev->sgtable.sgl; 580 /* prep sg table */ 581 while (pkt_next != (struct sk_buff *)target_list) { 582 pkt_data = pkt_next->data + pkt_offset; 583 sg_data_sz = pkt_next->len - pkt_offset; 584 if (sg_data_sz > sdiodev->max_segment_size) 585 sg_data_sz = sdiodev->max_segment_size; 586 if (sg_data_sz > max_req_sz - req_sz) 587 sg_data_sz = max_req_sz - req_sz; 588 589 sg_set_buf(sgl, pkt_data, sg_data_sz); 590 591 sg_cnt++; 592 sgl = sg_next(sgl); 593 req_sz += sg_data_sz; 594 pkt_offset += sg_data_sz; 595 if (pkt_offset == pkt_next->len) { 596 pkt_offset = 0; 597 pkt_next = pkt_next->next; 598 } 599 600 if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt) 601 break; 602 } 603 seg_sz -= sg_cnt; 604 605 if (req_sz % func_blk_sz != 0) { 606 brcmf_err("sg request length %u is not %u aligned\n", 607 req_sz, func_blk_sz); 608 ret = -ENOTBLK; 609 goto exit; 610 } 611 612 mmc_dat.sg_len = sg_cnt; 613 mmc_dat.blocks = req_sz / func_blk_sz; 614 mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */ 615 mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */ 616 /* incrementing addr for function 1 */ 617 if (fn == 1) 618 addr += req_sz; 619 620 mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card); 621 mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req); 622 623 ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error; 624 if (ret == -ENOMEDIUM) { 625 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); 626 break; 627 } else if (ret != 0) { 628 brcmf_err("CMD53 sg block %s failed %d\n", 629 write ? "write" : "read", ret); 630 ret = -EIO; 631 break; 632 } 633 } 634 635 if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) { 636 local_pkt_next = local_list.next; 637 orig_offset = 0; 638 skb_queue_walk(pktlist, pkt_next) { 639 dst_offset = 0; 640 do { 641 req_sz = local_pkt_next->len - orig_offset; 642 req_sz = min_t(uint, pkt_next->len - dst_offset, 643 req_sz); 644 orig_data = local_pkt_next->data + orig_offset; 645 dst_data = pkt_next->data + dst_offset; 646 memcpy(dst_data, orig_data, req_sz); 647 orig_offset += req_sz; 648 dst_offset += req_sz; 649 if (orig_offset == local_pkt_next->len) { 650 orig_offset = 0; 651 local_pkt_next = local_pkt_next->next; 652 } 653 if (dst_offset == pkt_next->len) 654 break; 655 } while (!skb_queue_empty(&local_list)); 656 } 657 } 658 659exit: 660 sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents); 661 while ((pkt_next = __skb_dequeue(&local_list)) != NULL) 662 brcmu_pkt_buf_free_skb(pkt_next); 663 664 return ret; 665} 666 667int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) 668{ 669 struct sk_buff *mypkt; 670 int err; 671 672 mypkt = brcmu_pkt_buf_get_skb(nbytes); 673 if (!mypkt) { 674 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", 675 nbytes); 676 return -EIO; 677 } 678 679 err = brcmf_sdiod_recv_pkt(sdiodev, mypkt); 680 if (!err) 681 memcpy(buf, mypkt->data, nbytes); 682 683 brcmu_pkt_buf_free_skb(mypkt); 684 return err; 685} 686 687int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt) 688{ 689 u32 addr = sdiodev->sbwad; 690 int err = 0; 691 692 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len); 693 694 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); 695 if (err) 696 goto done; 697 698 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt); 699 700done: 701 return err; 702} 703 704int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev, 705 struct sk_buff_head *pktq, uint totlen) 706{ 707 struct sk_buff *glom_skb; 708 struct sk_buff *skb; 709 u32 addr = sdiodev->sbwad; 710 int err = 0; 711 712 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", 713 addr, pktq->qlen); 714 715 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); 716 if (err) 717 goto done; 718 719 if (pktq->qlen == 1) 720 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, 721 pktq->next); 722 else if (!sdiodev->sg_support) { 723 glom_skb = brcmu_pkt_buf_get_skb(totlen); 724 if (!glom_skb) 725 return -ENOMEM; 726 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, 727 glom_skb); 728 if (err) 729 goto done; 730 731 skb_queue_walk(pktq, skb) { 732 memcpy(skb->data, glom_skb->data, skb->len); 733 skb_pull(glom_skb, skb->len); 734 } 735 } else 736 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr, 737 pktq); 738 739done: 740 return err; 741} 742 743int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) 744{ 745 struct sk_buff *mypkt; 746 u32 addr = sdiodev->sbwad; 747 int err; 748 749 mypkt = brcmu_pkt_buf_get_skb(nbytes); 750 if (!mypkt) { 751 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", 752 nbytes); 753 return -EIO; 754 } 755 756 memcpy(mypkt->data, buf, nbytes); 757 758 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); 759 760 if (!err) 761 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr, 762 mypkt); 763 764 brcmu_pkt_buf_free_skb(mypkt); 765 return err; 766 767} 768 769int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev, 770 struct sk_buff_head *pktq) 771{ 772 struct sk_buff *skb; 773 u32 addr = sdiodev->sbwad; 774 int err; 775 776 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen); 777 778 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); 779 if (err) 780 return err; 781 782 if (pktq->qlen == 1 || !sdiodev->sg_support) 783 skb_queue_walk(pktq, skb) { 784 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, 785 addr, skb); 786 if (err) 787 break; 788 } 789 else 790 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr, 791 pktq); 792 793 return err; 794} 795 796int 797brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address, 798 u8 *data, uint size) 799{ 800 int bcmerror = 0; 801 struct sk_buff *pkt; 802 u32 sdaddr; 803 uint dsize; 804 805 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); 806 pkt = dev_alloc_skb(dsize); 807 if (!pkt) { 808 brcmf_err("dev_alloc_skb failed: len %d\n", dsize); 809 return -EIO; 810 } 811 pkt->priority = 0; 812 813 /* Determine initial transfer parameters */ 814 sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK; 815 if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK) 816 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr); 817 else 818 dsize = size; 819 820 sdio_claim_host(sdiodev->func[1]); 821 822 /* Do the transfer(s) */ 823 while (size) { 824 /* Set the backplane window to include the start address */ 825 bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address); 826 if (bcmerror) 827 break; 828 829 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n", 830 write ? "write" : "read", dsize, 831 sdaddr, address & SBSDIO_SBWINDOW_MASK); 832 833 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK; 834 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG; 835 836 skb_put(pkt, dsize); 837 if (write) 838 memcpy(pkt->data, data, dsize); 839 bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write, 840 sdaddr, pkt); 841 if (bcmerror) { 842 brcmf_err("membytes transfer failed\n"); 843 break; 844 } 845 if (!write) 846 memcpy(data, pkt->data, dsize); 847 skb_trim(pkt, 0); 848 849 /* Adjust for next transfer (if any) */ 850 size -= dsize; 851 if (size) { 852 data += dsize; 853 address += dsize; 854 sdaddr = 0; 855 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); 856 } 857 } 858 859 dev_kfree_skb(pkt); 860 861 /* Return the window to backplane enumeration space for core access */ 862 if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad)) 863 brcmf_err("FAILED to set window back to 0x%x\n", 864 sdiodev->sbwad); 865 866 sdio_release_host(sdiodev->func[1]); 867 868 return bcmerror; 869} 870 871int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn) 872{ 873 char t_func = (char)fn; 874 brcmf_dbg(SDIO, "Enter\n"); 875 876 /* issue abort cmd52 command through F0 */ 877 brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT, 878 sizeof(t_func), &t_func, true); 879 880 brcmf_dbg(SDIO, "Exit\n"); 881 return 0; 882} 883 884static void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev) 885{ 886 uint nents; 887 int err; 888 889 if (!sdiodev->sg_support) 890 return; 891 892 nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE, brcmf_sdiod_txglomsz); 893 nents += (nents >> 4) + 1; 894 895 WARN_ON(nents > sdiodev->max_segment_count); 896 897 brcmf_dbg(TRACE, "nents=%d\n", nents); 898 err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL); 899 if (err < 0) { 900 brcmf_err("allocation failed: disable scatter-gather"); 901 sdiodev->sg_support = false; 902 } 903 904 sdiodev->txglomsz = brcmf_sdiod_txglomsz; 905} 906 907#ifdef CONFIG_PM_SLEEP 908static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev) 909{ 910 sdiodev->freezer = kzalloc(sizeof(*sdiodev->freezer), GFP_KERNEL); 911 if (!sdiodev->freezer) 912 return -ENOMEM; 913 atomic_set(&sdiodev->freezer->thread_count, 0); 914 atomic_set(&sdiodev->freezer->freezing, 0); 915 init_waitqueue_head(&sdiodev->freezer->thread_freeze); 916 init_completion(&sdiodev->freezer->resumed); 917 return 0; 918} 919 920static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev) 921{ 922 if (sdiodev->freezer) { 923 WARN_ON(atomic_read(&sdiodev->freezer->freezing)); 924 kfree(sdiodev->freezer); 925 } 926} 927 928static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev *sdiodev) 929{ 930 atomic_t *expect = &sdiodev->freezer->thread_count; 931 int res = 0; 932 933 sdiodev->freezer->frozen_count = 0; 934 reinit_completion(&sdiodev->freezer->resumed); 935 atomic_set(&sdiodev->freezer->freezing, 1); 936 brcmf_sdio_trigger_dpc(sdiodev->bus); 937 wait_event(sdiodev->freezer->thread_freeze, 938 atomic_read(expect) == sdiodev->freezer->frozen_count); 939 sdio_claim_host(sdiodev->func[1]); 940 res = brcmf_sdio_sleep(sdiodev->bus, true); 941 sdio_release_host(sdiodev->func[1]); 942 return res; 943} 944 945static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev *sdiodev) 946{ 947 sdio_claim_host(sdiodev->func[1]); 948 brcmf_sdio_sleep(sdiodev->bus, false); 949 sdio_release_host(sdiodev->func[1]); 950 atomic_set(&sdiodev->freezer->freezing, 0); 951 complete_all(&sdiodev->freezer->resumed); 952} 953 954bool brcmf_sdiod_freezing(struct brcmf_sdio_dev *sdiodev) 955{ 956 return atomic_read(&sdiodev->freezer->freezing); 957} 958 959void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev *sdiodev) 960{ 961 if (!brcmf_sdiod_freezing(sdiodev)) 962 return; 963 sdiodev->freezer->frozen_count++; 964 wake_up(&sdiodev->freezer->thread_freeze); 965 wait_for_completion(&sdiodev->freezer->resumed); 966} 967 968void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev *sdiodev) 969{ 970 atomic_inc(&sdiodev->freezer->thread_count); 971} 972 973void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev *sdiodev) 974{ 975 atomic_dec(&sdiodev->freezer->thread_count); 976} 977#else 978static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev) 979{ 980 return 0; 981} 982 983static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev) 984{ 985} 986#endif /* CONFIG_PM_SLEEP */ 987 988static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev) 989{ 990 if (sdiodev->bus) { 991 brcmf_sdio_remove(sdiodev->bus); 992 sdiodev->bus = NULL; 993 } 994 995 brcmf_sdiod_freezer_detach(sdiodev); 996 997 /* Disable Function 2 */ 998 sdio_claim_host(sdiodev->func[2]); 999 sdio_disable_func(sdiodev->func[2]); 1000 sdio_release_host(sdiodev->func[2]); 1001 1002 /* Disable Function 1 */ 1003 sdio_claim_host(sdiodev->func[1]); 1004 sdio_disable_func(sdiodev->func[1]); 1005 sdio_release_host(sdiodev->func[1]); 1006 1007 sg_free_table(&sdiodev->sgtable); 1008 sdiodev->sbwad = 0; 1009 1010 pm_runtime_allow(sdiodev->func[1]->card->host->parent); 1011 return 0; 1012} 1013 1014static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev) 1015{ 1016 struct sdio_func *func; 1017 struct mmc_host *host; 1018 uint max_blocks; 1019 int ret = 0; 1020 1021 sdiodev->num_funcs = 2; 1022 1023 sdio_claim_host(sdiodev->func[1]); 1024 1025 ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE); 1026 if (ret) { 1027 brcmf_err("Failed to set F1 blocksize\n"); 1028 sdio_release_host(sdiodev->func[1]); 1029 goto out; 1030 } 1031 ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE); 1032 if (ret) { 1033 brcmf_err("Failed to set F2 blocksize\n"); 1034 sdio_release_host(sdiodev->func[1]); 1035 goto out; 1036 } 1037 1038 /* increase F2 timeout */ 1039 sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY; 1040 1041 /* Enable Function 1 */ 1042 ret = sdio_enable_func(sdiodev->func[1]); 1043 sdio_release_host(sdiodev->func[1]); 1044 if (ret) { 1045 brcmf_err("Failed to enable F1: err=%d\n", ret); 1046 goto out; 1047 } 1048 1049 /* 1050 * determine host related variables after brcmf_sdiod_probe() 1051 * as func->cur_blksize is properly set and F2 init has been 1052 * completed successfully. 1053 */ 1054 func = sdiodev->func[2]; 1055 host = func->card->host; 1056 sdiodev->sg_support = host->max_segs > 1; 1057 max_blocks = min_t(uint, host->max_blk_count, 511u); 1058 sdiodev->max_request_size = min_t(uint, host->max_req_size, 1059 max_blocks * func->cur_blksize); 1060 sdiodev->max_segment_count = min_t(uint, host->max_segs, 1061 SG_MAX_SINGLE_ALLOC); 1062 sdiodev->max_segment_size = host->max_seg_size; 1063 1064 /* allocate scatter-gather table. sg support 1065 * will be disabled upon allocation failure. 1066 */ 1067 brcmf_sdiod_sgtable_alloc(sdiodev); 1068 1069 ret = brcmf_sdiod_freezer_attach(sdiodev); 1070 if (ret) 1071 goto out; 1072 1073 /* try to attach to the target device */ 1074 sdiodev->bus = brcmf_sdio_probe(sdiodev); 1075 if (!sdiodev->bus) { 1076 ret = -ENODEV; 1077 goto out; 1078 } 1079 pm_runtime_forbid(host->parent); 1080out: 1081 if (ret) 1082 brcmf_sdiod_remove(sdiodev); 1083 1084 return ret; 1085} 1086 1087#define BRCMF_SDIO_DEVICE(dev_id) \ 1088 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)} 1089 1090/* devices we support, null terminated */ 1091static const struct sdio_device_id brcmf_sdmmc_ids[] = { 1092 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143), 1093 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241), 1094 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329), 1095 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330), 1096 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334), 1097 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340), 1098 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341), 1099 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362), 1100 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339), 1101 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430), 1102 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345), 1103 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354), 1104 { /* end: all zeroes */ } 1105}; 1106MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids); 1107 1108static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata; 1109 1110 1111static int brcmf_ops_sdio_probe(struct sdio_func *func, 1112 const struct sdio_device_id *id) 1113{ 1114 int err; 1115 struct brcmf_sdio_dev *sdiodev; 1116 struct brcmf_bus *bus_if; 1117 1118 brcmf_dbg(SDIO, "Enter\n"); 1119 brcmf_dbg(SDIO, "Class=%x\n", func->class); 1120 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); 1121 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); 1122 brcmf_dbg(SDIO, "Function#: %d\n", func->num); 1123 1124 /* Consume func num 1 but dont do anything with it. */ 1125 if (func->num == 1) 1126 return 0; 1127 1128 /* Ignore anything but func 2 */ 1129 if (func->num != 2) 1130 return -ENODEV; 1131 1132 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL); 1133 if (!bus_if) 1134 return -ENOMEM; 1135 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL); 1136 if (!sdiodev) { 1137 kfree(bus_if); 1138 return -ENOMEM; 1139 } 1140 1141 /* store refs to functions used. mmc_card does 1142 * not hold the F0 function pointer. 1143 */ 1144 sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL); 1145 sdiodev->func[0]->num = 0; 1146 sdiodev->func[1] = func->card->sdio_func[0]; 1147 sdiodev->func[2] = func; 1148 1149 sdiodev->bus_if = bus_if; 1150 bus_if->bus_priv.sdio = sdiodev; 1151 bus_if->proto_type = BRCMF_PROTO_BCDC; 1152 dev_set_drvdata(&func->dev, bus_if); 1153 dev_set_drvdata(&sdiodev->func[1]->dev, bus_if); 1154 sdiodev->dev = &sdiodev->func[1]->dev; 1155 sdiodev->pdata = brcmfmac_sdio_pdata; 1156 1157 if (!sdiodev->pdata) 1158 brcmf_of_probe(sdiodev); 1159 1160#ifdef CONFIG_PM_SLEEP 1161 /* wowl can be supported when KEEP_POWER is true and (WAKE_SDIO_IRQ 1162 * is true or when platform data OOB irq is true). 1163 */ 1164 if ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_KEEP_POWER) && 1165 ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_WAKE_SDIO_IRQ) || 1166 (sdiodev->pdata && sdiodev->pdata->oob_irq_supported))) 1167 bus_if->wowl_supported = true; 1168#endif 1169 1170 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN); 1171 1172 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n"); 1173 err = brcmf_sdiod_probe(sdiodev); 1174 if (err) { 1175 brcmf_err("F2 error, probe failed %d...\n", err); 1176 goto fail; 1177 } 1178 1179 brcmf_dbg(SDIO, "F2 init completed...\n"); 1180 return 0; 1181 1182fail: 1183 dev_set_drvdata(&func->dev, NULL); 1184 dev_set_drvdata(&sdiodev->func[1]->dev, NULL); 1185 kfree(sdiodev->func[0]); 1186 kfree(sdiodev); 1187 kfree(bus_if); 1188 return err; 1189} 1190 1191static void brcmf_ops_sdio_remove(struct sdio_func *func) 1192{ 1193 struct brcmf_bus *bus_if; 1194 struct brcmf_sdio_dev *sdiodev; 1195 1196 brcmf_dbg(SDIO, "Enter\n"); 1197 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); 1198 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); 1199 brcmf_dbg(SDIO, "Function: %d\n", func->num); 1200 1201 if (func->num != 1) 1202 return; 1203 1204 bus_if = dev_get_drvdata(&func->dev); 1205 if (bus_if) { 1206 sdiodev = bus_if->bus_priv.sdio; 1207 brcmf_sdiod_remove(sdiodev); 1208 1209 dev_set_drvdata(&sdiodev->func[1]->dev, NULL); 1210 dev_set_drvdata(&sdiodev->func[2]->dev, NULL); 1211 1212 kfree(bus_if); 1213 kfree(sdiodev->func[0]); 1214 kfree(sdiodev); 1215 } 1216 1217 brcmf_dbg(SDIO, "Exit\n"); 1218} 1219 1220void brcmf_sdio_wowl_config(struct device *dev, bool enabled) 1221{ 1222 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1223 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; 1224 1225 brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled); 1226 sdiodev->wowl_enabled = enabled; 1227} 1228 1229#ifdef CONFIG_PM_SLEEP 1230static int brcmf_ops_sdio_suspend(struct device *dev) 1231{ 1232 struct sdio_func *func; 1233 struct brcmf_bus *bus_if; 1234 struct brcmf_sdio_dev *sdiodev; 1235 mmc_pm_flag_t sdio_flags; 1236 1237 func = container_of(dev, struct sdio_func, dev); 1238 brcmf_dbg(SDIO, "Enter: F%d\n", func->num); 1239 if (func->num != SDIO_FUNC_1) 1240 return 0; 1241 1242 1243 bus_if = dev_get_drvdata(dev); 1244 sdiodev = bus_if->bus_priv.sdio; 1245 1246 brcmf_sdiod_freezer_on(sdiodev); 1247 brcmf_sdio_wd_timer(sdiodev->bus, 0); 1248 1249 if (sdiodev->wowl_enabled) { 1250 sdio_flags = MMC_PM_KEEP_POWER; 1251 if (sdiodev->pdata->oob_irq_supported) 1252 enable_irq_wake(sdiodev->pdata->oob_irq_nr); 1253 else 1254 sdio_flags = MMC_PM_WAKE_SDIO_IRQ; 1255 if (sdio_set_host_pm_flags(sdiodev->func[1], sdio_flags)) 1256 brcmf_err("Failed to set pm_flags %x\n", sdio_flags); 1257 } 1258 return 0; 1259} 1260 1261static int brcmf_ops_sdio_resume(struct device *dev) 1262{ 1263 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 1264 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; 1265 struct sdio_func *func = container_of(dev, struct sdio_func, dev); 1266 1267 brcmf_dbg(SDIO, "Enter: F%d\n", func->num); 1268 if (func->num != SDIO_FUNC_2) 1269 return 0; 1270 1271 brcmf_sdiod_freezer_off(sdiodev); 1272 return 0; 1273} 1274 1275static const struct dev_pm_ops brcmf_sdio_pm_ops = { 1276 .suspend = brcmf_ops_sdio_suspend, 1277 .resume = brcmf_ops_sdio_resume, 1278}; 1279#endif /* CONFIG_PM_SLEEP */ 1280 1281static struct sdio_driver brcmf_sdmmc_driver = { 1282 .probe = brcmf_ops_sdio_probe, 1283 .remove = brcmf_ops_sdio_remove, 1284 .name = BRCMFMAC_SDIO_PDATA_NAME, 1285 .id_table = brcmf_sdmmc_ids, 1286 .drv = { 1287 .owner = THIS_MODULE, 1288#ifdef CONFIG_PM_SLEEP 1289 .pm = &brcmf_sdio_pm_ops, 1290#endif /* CONFIG_PM_SLEEP */ 1291 }, 1292}; 1293 1294static int __init brcmf_sdio_pd_probe(struct platform_device *pdev) 1295{ 1296 brcmf_dbg(SDIO, "Enter\n"); 1297 1298 brcmfmac_sdio_pdata = dev_get_platdata(&pdev->dev); 1299 1300 if (brcmfmac_sdio_pdata->power_on) 1301 brcmfmac_sdio_pdata->power_on(); 1302 1303 return 0; 1304} 1305 1306static int brcmf_sdio_pd_remove(struct platform_device *pdev) 1307{ 1308 brcmf_dbg(SDIO, "Enter\n"); 1309 1310 if (brcmfmac_sdio_pdata->power_off) 1311 brcmfmac_sdio_pdata->power_off(); 1312 1313 sdio_unregister_driver(&brcmf_sdmmc_driver); 1314 1315 return 0; 1316} 1317 1318static struct platform_driver brcmf_sdio_pd = { 1319 .remove = brcmf_sdio_pd_remove, 1320 .driver = { 1321 .name = BRCMFMAC_SDIO_PDATA_NAME, 1322 } 1323}; 1324 1325void brcmf_sdio_register(void) 1326{ 1327 int ret; 1328 1329 ret = sdio_register_driver(&brcmf_sdmmc_driver); 1330 if (ret) 1331 brcmf_err("sdio_register_driver failed: %d\n", ret); 1332} 1333 1334void brcmf_sdio_exit(void) 1335{ 1336 brcmf_dbg(SDIO, "Enter\n"); 1337 1338 if (brcmfmac_sdio_pdata) 1339 platform_driver_unregister(&brcmf_sdio_pd); 1340 else 1341 sdio_unregister_driver(&brcmf_sdmmc_driver); 1342} 1343 1344void __init brcmf_sdio_init(void) 1345{ 1346 int ret; 1347 1348 brcmf_dbg(SDIO, "Enter\n"); 1349 1350 ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe); 1351 if (ret == -ENODEV) 1352 brcmf_dbg(SDIO, "No platform data available.\n"); 1353} 1354