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brcmfmac: reduce function parameters in sdio send/receive calls
[deliverable/linux.git] / drivers / net / wireless / brcm80211 / brcmfmac / bcmsdh.c
CommitLineData
5b435de0
AS		 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>
354b75bf 24#include <linux/scatterlist.h>
5b435de0 25#include <linux/mmc/sdio.h>
e2dc9eea 26#include <linux/mmc/core.h>
5b435de0 27#include <linux/mmc/sdio_func.h>
e2dc9eea 28#include <linux/mmc/sdio_ids.h>
5b435de0 29#include <linux/mmc/card.h>
e2dc9eea
AS		 30#include <linux/mmc/host.h>
31#include <linux/platform_device.h>
668761ac 32#include <linux/platform_data/brcmfmac-sdio.h>
e2dc9eea
AS		 33#include <linux/suspend.h>
34#include <linux/errno.h>
35#include <linux/module.h>
36#include <net/cfg80211.h>
5b435de0
AS		 37
38#include <defs.h>
39#include <brcm_hw_ids.h>
40#include <brcmu_utils.h>
41#include <brcmu_wifi.h>
42#include <soc.h>
5b435de0
AS		 43#include "dhd_bus.h"
44#include "dhd_dbg.h"
45#include "sdio_host.h"
e2dc9eea 46#include "sdio_chip.h"
5b435de0
AS		 47
48#define SDIOH_API_ACCESS_RETRY_LIMIT 2
49
e49b06ba
AS		 50#define SDIO_VENDOR_ID_BROADCOM 0x02d0
51
52#define DMA_ALIGN_MASK 0x03
53
54#define SDIO_FUNC1_BLOCKSIZE 64
55#define SDIO_FUNC2_BLOCKSIZE 512
71370eb8
AS		 56/* Maximum milliseconds to wait for F2 to come up */
57#define SDIO_WAIT_F2RDY 3000
58
668761ac 59
a39be27b 60static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id)
ba89bf19 61{
5b3c1832
HM		 62 struct brcmf_bus *bus_if = dev_get_drvdata(dev_id);
63 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
ba89bf19 64
668761ac 65 brcmf_dbg(INTR, "OOB intr triggered\n");
ba89bf19 66
668761ac 67 /* out-of-band interrupt is level-triggered which won't
ba89bf19
FL		 68 * be cleared until dpc
69 */
70 if (sdiodev->irq_en) {
71 disable_irq_nosync(irq);
72 sdiodev->irq_en = false;
73 }
74
75 brcmf_sdbrcm_isr(sdiodev->bus);
76
77 return IRQ_HANDLED;
78}
79
a39be27b 80static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func)
5b435de0 81{
5b3c1832
HM		 82 struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev);
83 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
5b435de0 84
668761ac 85 brcmf_dbg(INTR, "IB intr triggered\n");
5b435de0 86
5b435de0 87 brcmf_sdbrcm_isr(sdiodev->bus);
5b435de0
AS		 88}
89
fbf59108 90/* dummy handler for SDIO function 2 interrupt */
a39be27b 91static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func)
fbf59108
FL		 92{
93}
94
a39be27b 95static bool brcmf_sdiod_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
e49b06ba
AS		 96{
97 bool is_err = false;
98#ifdef CONFIG_PM_SLEEP
99 is_err = atomic_read(&sdiodev->suspend);
100#endif
101 return is_err;
102}
103
a39be27b
AS		 104static void brcmf_sdiod_pm_resume_wait(struct brcmf_sdio_dev *sdiodev,
105 wait_queue_head_t *wq)
e49b06ba
AS		 106{
107#ifdef CONFIG_PM_SLEEP
108 int retry = 0;
109 while (atomic_read(&sdiodev->suspend) && retry++ != 30)
110 wait_event_timeout(*wq, false, HZ/100);
111#endif
112}
113
a39be27b 114int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev)
5b435de0 115{
668761ac
HM		 116 int ret = 0;
117 u8 data;
118 unsigned long flags;
5b435de0 119
668761ac
HM		 120 if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) {
121 brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n",
122 sdiodev->pdata->oob_irq_nr);
123 ret = request_irq(sdiodev->pdata->oob_irq_nr,
a39be27b 124 brcmf_sdiod_oob_irqhandler,
668761ac
HM		 125 sdiodev->pdata->oob_irq_flags,
126 "brcmf_oob_intr",
127 &sdiodev->func[1]->dev);
128 if (ret != 0) {
129 brcmf_err("request_irq failed %d\n", ret);
130 return ret;
131 }
132 sdiodev->oob_irq_requested = true;
133 spin_lock_init(&sdiodev->irq_en_lock);
134 spin_lock_irqsave(&sdiodev->irq_en_lock, flags);
135 sdiodev->irq_en = true;
136 spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags);
137
138 ret = enable_irq_wake(sdiodev->pdata->oob_irq_nr);
139 if (ret != 0) {
140 brcmf_err("enable_irq_wake failed %d\n", ret);
141 return ret;
142 }
143 sdiodev->irq_wake = true;
144
145 sdio_claim_host(sdiodev->func[1]);
146
147 /* must configure SDIO_CCCR_IENx to enable irq */
a39be27b 148 data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret);
668761ac 149 data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1;
a39be27b 150 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret);
668761ac
HM		 151
152 /* redirect, configure and enable io for interrupt signal */
153 data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE;
154 if (sdiodev->pdata->oob_irq_flags & IRQF_TRIGGER_HIGH)
155 data |= SDIO_SEPINT_ACT_HI;
a39be27b 156 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret);
668761ac
HM		 157
158 sdio_release_host(sdiodev->func[1]);
159 } else {
160 brcmf_dbg(SDIO, "Entering\n");
161 sdio_claim_host(sdiodev->func[1]);
a39be27b
AS		 162 sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler);
163 sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler);
668761ac
HM		 164 sdio_release_host(sdiodev->func[1]);
165 }
5b435de0
AS		 166
167 return 0;
168}
169
a39be27b 170int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
5b435de0 171{
c3203374 172 brcmf_dbg(SDIO, "Entering\n");
5b435de0 173
668761ac
HM		 174 if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) {
175 sdio_claim_host(sdiodev->func[1]);
a39be27b
AS		 176 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
177 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
668761ac
HM		 178 sdio_release_host(sdiodev->func[1]);
179
180 if (sdiodev->oob_irq_requested) {
181 sdiodev->oob_irq_requested = false;
182 if (sdiodev->irq_wake) {
183 disable_irq_wake(sdiodev->pdata->oob_irq_nr);
184 sdiodev->irq_wake = false;
185 }
186 free_irq(sdiodev->pdata->oob_irq_nr,
187 &sdiodev->func[1]->dev);
188 sdiodev->irq_en = false;
189 }
190 } else {
191 sdio_claim_host(sdiodev->func[1]);
192 sdio_release_irq(sdiodev->func[2]);
193 sdio_release_irq(sdiodev->func[1]);
194 sdio_release_host(sdiodev->func[1]);
195 }
5b435de0
AS		 196
197 return 0;
198}
199
a39be27b 200static inline int brcmf_sdiod_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
e49b06ba
AS		 201 uint regaddr, u8 *byte)
202{
203 struct sdio_func *sdfunc = sdiodev->func[0];
204 int err_ret;
205
206 /*
207 * Can only directly write to some F0 registers.
208 * Handle F2 enable/disable and Abort command
209 * as a special case.
210 */
71370eb8
AS		 211 if ((regaddr == SDIO_CCCR_ABORT) ||
212 (regaddr == SDIO_CCCR_IENx)) {
e49b06ba
AS		 213 sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func),
214 GFP_KERNEL);
215 if (!sdfunc)
216 return -ENOMEM;
217 sdfunc->num = 0;
218 sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
219 kfree(sdfunc);
220 } else if (regaddr < 0xF0) {
221 brcmf_err("F0 Wr:0x%02x: write disallowed\n", regaddr);
222 err_ret = -EPERM;
223 } else {
224 sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
225 }
226
227 return err_ret;
228}
229
a39be27b 230static int brcmf_sdiod_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw,
e49b06ba
AS		 231 uint func, uint regaddr, u8 *byte)
232{
233 int err_ret;
234
235 brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
236
a39be27b
AS		 237 brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
238 if (brcmf_sdiod_pm_resume_error(sdiodev))
e49b06ba
AS		 239 return -EIO;
240
241 if (rw && func == 0) {
242 /* handle F0 separately */
a39be27b 243 err_ret = brcmf_sdiod_f0_write_byte(sdiodev, regaddr, byte);
e49b06ba
AS		 244 } else {
245 if (rw) /* CMD52 Write */
246 sdio_writeb(sdiodev->func[func], *byte, regaddr,
247 &err_ret);
248 else if (func == 0) {
249 *byte = sdio_f0_readb(sdiodev->func[func], regaddr,
250 &err_ret);
251 } else {
252 *byte = sdio_readb(sdiodev->func[func], regaddr,
253 &err_ret);
254 }
255 }
256
257 if (err_ret) {
258 /*
259 * SleepCSR register access can fail when
260 * waking up the device so reduce this noise
261 * in the logs.
262 */
263 if (regaddr != SBSDIO_FUNC1_SLEEPCSR)
264 brcmf_err("Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
265 rw ? "write" : "read", func, regaddr, *byte,
266 err_ret);
267 else
268 brcmf_dbg(SDIO, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
269 rw ? "write" : "read", func, regaddr, *byte,
270 err_ret);
271 }
272 return err_ret;
273}
274
a39be27b 275static int brcmf_sdiod_request_word(struct brcmf_sdio_dev *sdiodev, uint rw,
e49b06ba
AS		 276 uint func, uint addr, u32 *word,
277 uint nbytes)
278{
279 int err_ret = -EIO;
280
281 if (func == 0) {
282 brcmf_err("Only CMD52 allowed to F0\n");
283 return -EINVAL;
284 }
285
286 brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
287 rw, func, addr, nbytes);
288
a39be27b
AS		 289 brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
290 if (brcmf_sdiod_pm_resume_error(sdiodev))
e49b06ba
AS		 291 return -EIO;
292
293 if (rw) { /* CMD52 Write */
294 if (nbytes == 4)
295 sdio_writel(sdiodev->func[func], *word, addr,
296 &err_ret);
297 else if (nbytes == 2)
298 sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
299 addr, &err_ret);
300 else
301 brcmf_err("Invalid nbytes: %d\n", nbytes);
302 } else { /* CMD52 Read */
303 if (nbytes == 4)
304 *word = sdio_readl(sdiodev->func[func], addr, &err_ret);
305 else if (nbytes == 2)
306 *word = sdio_readw(sdiodev->func[func], addr,
307 &err_ret) & 0xFFFF;
308 else
309 brcmf_err("Invalid nbytes: %d\n", nbytes);
310 }
311
312 if (err_ret)
313 brcmf_err("Failed to %s word, Err: 0x%08x\n",
314 rw ? "write" : "read", err_ret);
315
316 return err_ret;
317}
318
356bae6f 319static int
a39be27b 320brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
5b435de0 321{
7d9cfc28
FL		 322 int err = 0, i;
323 u8 addr[3];
324 s32 retry;
325
326 addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
327 addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK;
328 addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK;
329
330 for (i = 0; i < 3; i++) {
331 retry = 0;
332 do {
333 if (retry)
334 usleep_range(1000, 2000);
a39be27b 335 err = brcmf_sdiod_request_byte(sdiodev, SDIOH_WRITE,
7d9cfc28
FL		 336 SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW + i,
337 &addr[i]);
338 } while (err != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
339
340 if (err) {
5e8149f5 341 brcmf_err("failed at addr:0x%0x\n",
7d9cfc28
FL		 342 SBSDIO_FUNC1_SBADDRLOW + i);
343 break;
344 }
345 }
5b435de0
AS		 346
347 return err;
348}
349
356bae6f 350static int
a39be27b 351brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr)
356bae6f
FL		 352{
353 uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
354 int err = 0;
355
356 if (bar0 != sdiodev->sbwad) {
a39be27b 357 err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0);
356bae6f
FL		 358 if (err)
359 return err;
360
361 sdiodev->sbwad = bar0;
362 }
363
364 *addr &= SBSDIO_SB_OFT_ADDR_MASK;
365
366 if (width == 4)
367 *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
368
369 return 0;
370}
371
a39be27b
AS		 372static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
373 void *data, bool write)
e9b8d91d
FL		 374{
375 u8 func_num, reg_size;
e9b8d91d
FL		 376 s32 retry = 0;
377 int ret;
378
379 /*
380 * figure out how to read the register based on address range
d8b3fc59 381 * 0x00 ~ 0x7FF: function 0 CCCR and FBR
e9b8d91d
FL		 382 * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
383 * The rest: function 1 silicon backplane core registers
384 */
d8b3fc59 385 if ((addr & ~REG_F0_REG_MASK) == 0) {
e9b8d91d
FL		 386 func_num = SDIO_FUNC_0;
387 reg_size = 1;
388 } else if ((addr & ~REG_F1_MISC_MASK) == 0) {
389 func_num = SDIO_FUNC_1;
390 reg_size = 1;
391 } else {
392 func_num = SDIO_FUNC_1;
393 reg_size = 4;
394
a39be27b 395 ret = brcmf_sdiod_addrprep(sdiodev, reg_size, &addr);
fcaac2b1
AS		 396 if (ret)
397 goto done;
e9b8d91d
FL		 398 }
399
400 do {
401 if (!write)
402 memset(data, 0, reg_size);
403 if (retry) /* wait for 1 ms till bus get settled down */
404 usleep_range(1000, 2000);
405 if (reg_size == 1)
a39be27b 406 ret = brcmf_sdiod_request_byte(sdiodev, write,
e9b8d91d
FL		 407 func_num, addr, data);
408 else
a39be27b 409 ret = brcmf_sdiod_request_word(sdiodev, write,
e9b8d91d
FL		 410 func_num, addr, data, 4);
411 } while (ret != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
412
fcaac2b1 413done:
5c15c23a 414 if (ret != 0)
5e8149f5 415 brcmf_err("failed with %d\n", ret);
e9b8d91d
FL		 416
417 return ret;
418}
419
a39be27b 420u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
e9b8d91d
FL		 421{
422 u8 data;
423 int retval;
424
c3203374 425 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
a39be27b 426 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, &data, false);
c3203374 427 brcmf_dbg(SDIO, "data:0x%02x\n", data);
e9b8d91d
FL		 428
429 if (ret)
430 *ret = retval;
431
432 return data;
433}
434
a39be27b 435u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
e9b8d91d
FL		 436{
437 u32 data;
438 int retval;
439
c3203374 440 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
a39be27b 441 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, &data, false);
c3203374 442 brcmf_dbg(SDIO, "data:0x%08x\n", data);
e9b8d91d
FL		 443
444 if (ret)
445 *ret = retval;
446
447 return data;
448}
449
a39be27b 450void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
e9b8d91d
FL		 451 u8 data, int *ret)
452{
453 int retval;
454
c3203374 455 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data);
a39be27b 456 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, &data, true);
e9b8d91d
FL		 457
458 if (ret)
459 *ret = retval;
460}
461
a39be27b 462void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
e9b8d91d
FL		 463 u32 data, int *ret)
464{
465 int retval;
466
c3203374 467 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data);
a39be27b 468 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, &data, true);
e9b8d91d
FL		 469
470 if (ret)
471 *ret = retval;
472}
473
a39be27b 474static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn,
4aef267e
AS		 475 bool write, u32 addr, struct sk_buff *pkt)
476{
477 unsigned int req_sz;
478
a39be27b
AS		 479 brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
480 if (brcmf_sdiod_pm_resume_error(sdiodev))
4aef267e
AS		 481 return -EIO;
482
483 /* Single skb use the standard mmc interface */
484 req_sz = pkt->len + 3;
485 req_sz &= (uint)~3;
486
487 if (write)
488 return sdio_memcpy_toio(sdiodev->func[fn], addr,
489 ((u8 *)(pkt->data)),
490 req_sz);
491 else if (fn == 1)
492 return sdio_memcpy_fromio(sdiodev->func[fn],
493 ((u8 *)(pkt->data)),
494 addr, req_sz);
495 else
496 /* function 2 read is FIFO operation */
497 return sdio_readsb(sdiodev->func[fn],
498 ((u8 *)(pkt->data)), addr,
499 req_sz);
500}
501
78b3f1c5 502/**
a39be27b 503 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access
78b3f1c5
FL		 504 * @sdiodev: brcmfmac sdio device
505 * @fn: SDIO function number
506 * @write: direction flag
507 * @addr: dongle memory address as source/destination
508 * @pkt: skb pointer
509 *
510 * This function takes the respbonsibility as the interface function to MMC
511 * stack for block data access. It assumes that the skb passed down by the
512 * caller has already been padded and aligned.
513 */
a39be27b
AS		 514static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn,
515 bool write, u32 addr,
516 struct sk_buff_head *pktlist)
78b3f1c5 517{
354b75bf 518 unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset;
71201496 519 unsigned int max_req_sz, orig_offset, dst_offset;
3f782744 520 unsigned short max_seg_cnt, seg_sz;
3b81a680
FL		 521 unsigned char *pkt_data, *orig_data, *dst_data;
522 struct sk_buff *pkt_next = NULL, *local_pkt_next;
523 struct sk_buff_head local_list, *target_list;
354b75bf
FL		 524 struct mmc_request mmc_req;
525 struct mmc_command mmc_cmd;
526 struct mmc_data mmc_dat;
527 struct sg_table st;
528 struct scatterlist *sgl;
354b75bf
FL		 529 int ret = 0;
530
531 if (!pktlist->qlen)
532 return -EINVAL;
78b3f1c5 533
a39be27b
AS		 534 brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
535 if (brcmf_sdiod_pm_resume_error(sdiodev))
78b3f1c5
FL		 536 return -EIO;
537
3b81a680
FL		 538 target_list = pktlist;
539 /* for host with broken sg support, prepare a page aligned list */
540 __skb_queue_head_init(&local_list);
541 if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) {
542 req_sz = 0;
543 skb_queue_walk(pktlist, pkt_next)
544 req_sz += pkt_next->len;
545 req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize);
546 while (req_sz > PAGE_SIZE) {
547 pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE);
548 if (pkt_next == NULL) {
549 ret = -ENOMEM;
550 goto exit;
551 }
552 __skb_queue_tail(&local_list, pkt_next);
553 req_sz -= PAGE_SIZE;
554 }
555 pkt_next = brcmu_pkt_buf_get_skb(req_sz);
556 if (pkt_next == NULL) {
557 ret = -ENOMEM;
558 goto exit;
559 }
560 __skb_queue_tail(&local_list, pkt_next);
561 target_list = &local_list;
562 }
563
354b75bf 564 func_blk_sz = sdiodev->func[fn]->cur_blksize;
71201496
AS		 565 max_req_sz = sdiodev->max_request_size;
566 max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count,
567 target_list->qlen);
3b81a680 568 seg_sz = target_list->qlen;
354b75bf 569 pkt_offset = 0;
3b81a680 570 pkt_next = target_list->next;
354b75bf 571
3f782744 572 if (sg_alloc_table(&st, max_seg_cnt, GFP_KERNEL)) {
3b81a680
FL		 573 ret = -ENOMEM;
574 goto exit;
575 }
354b75bf 576
7f9a8dc8
AS		 577 memset(&mmc_req, 0, sizeof(struct mmc_request));
578 memset(&mmc_cmd, 0, sizeof(struct mmc_command));
579 memset(&mmc_dat, 0, sizeof(struct mmc_data));
580
581 mmc_dat.sg = st.sgl;
582 mmc_dat.blksz = func_blk_sz;
583 mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
584 mmc_cmd.opcode = SD_IO_RW_EXTENDED;
585 mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */
586 mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */
587 mmc_cmd.arg |= 1<<27; /* block mode */
588 /* for function 1 the addr will be incremented */
589 mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0;
590 mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
591 mmc_req.cmd = &mmc_cmd;
592 mmc_req.data = &mmc_dat;
593
354b75bf
FL		 594 while (seg_sz) {
595 req_sz = 0;
596 sg_cnt = 0;
354b75bf
FL		 597 sgl = st.sgl;
598 /* prep sg table */
3b81a680 599 while (pkt_next != (struct sk_buff *)target_list) {
354b75bf
FL		 600 pkt_data = pkt_next->data + pkt_offset;
601 sg_data_sz = pkt_next->len - pkt_offset;
71201496
AS		 602 if (sg_data_sz > sdiodev->max_segment_size)
603 sg_data_sz = sdiodev->max_segment_size;
354b75bf
FL		 604 if (sg_data_sz > max_req_sz - req_sz)
605 sg_data_sz = max_req_sz - req_sz;
606
607 sg_set_buf(sgl, pkt_data, sg_data_sz);
608
609 sg_cnt++;
610 sgl = sg_next(sgl);
611 req_sz += sg_data_sz;
612 pkt_offset += sg_data_sz;
613 if (pkt_offset == pkt_next->len) {
614 pkt_offset = 0;
615 pkt_next = pkt_next->next;
616 }
617
3f782744 618 if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt)
354b75bf
FL		 619 break;
620 }
621 seg_sz -= sg_cnt;
622
623 if (req_sz % func_blk_sz != 0) {
624 brcmf_err("sg request length %u is not %u aligned\n",
625 req_sz, func_blk_sz);
3b81a680
FL		 626 ret = -ENOTBLK;
627 goto exit;
354b75bf 628 }
7f9a8dc8 629
354b75bf 630 mmc_dat.sg_len = sg_cnt;
354b75bf 631 mmc_dat.blocks = req_sz / func_blk_sz;
354b75bf
FL		 632 mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */
633 mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */
7f9a8dc8 634 /* incrementing addr for function 1 */
354b75bf
FL		 635 if (fn == 1)
636 addr += req_sz;
637
638 mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card);
71201496 639 mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req);
354b75bf
FL		 640
641 ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error;
642 if (ret != 0) {
643 brcmf_err("CMD53 sg block %s failed %d\n",
644 write ? "write" : "read", ret);
645 ret = -EIO;
646 break;
647 }
648 }
649
3b81a680
FL		 650 if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) {
651 local_pkt_next = local_list.next;
652 orig_offset = 0;
653 skb_queue_walk(pktlist, pkt_next) {
654 dst_offset = 0;
655 do {
656 req_sz = local_pkt_next->len - orig_offset;
657 req_sz = min_t(uint, pkt_next->len - dst_offset,
658 req_sz);
659 orig_data = local_pkt_next->data + orig_offset;
660 dst_data = pkt_next->data + dst_offset;
661 memcpy(dst_data, orig_data, req_sz);
662 orig_offset += req_sz;
663 dst_offset += req_sz;
664 if (orig_offset == local_pkt_next->len) {
665 orig_offset = 0;
666 local_pkt_next = local_pkt_next->next;
667 }
668 if (dst_offset == pkt_next->len)
669 break;
670 } while (!skb_queue_empty(&local_list));
671 }
672 }
673
674exit:
354b75bf 675 sg_free_table(&st);
3b81a680
FL		 676 while ((pkt_next = __skb_dequeue(&local_list)) != NULL)
677 brcmu_pkt_buf_free_skb(pkt_next);
354b75bf
FL		 678
679 return ret;
78b3f1c5
FL		 680}
681
a7cdd821 682int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
5adfeb63
AS		 683{
684 struct sk_buff *mypkt;
685 int err;
686
687 mypkt = brcmu_pkt_buf_get_skb(nbytes);
688 if (!mypkt) {
5e8149f5 689 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
5adfeb63
AS		 690 nbytes);
691 return -EIO;
692 }
693
a7cdd821 694 err = brcmf_sdiod_recv_pkt(sdiodev, mypkt);
5adfeb63
AS		 695 if (!err)
696 memcpy(buf, mypkt->data, nbytes);
697
698 brcmu_pkt_buf_free_skb(mypkt);
699 return err;
700}
701
a7cdd821 702int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt)
5adfeb63 703{
a7cdd821 704 u32 addr = sdiodev->sbwad;
5adfeb63
AS		 705 int err = 0;
706
a7cdd821 707 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len);
5adfeb63 708
a7cdd821 709 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
5adfeb63 710 if (err)
7057fd00 711 goto done;
5b435de0 712
a7cdd821 713 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt);
5adfeb63 714
7057fd00 715done:
5adfeb63
AS		 716 return err;
717}
718
a7cdd821
AS		 719int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
720 struct sk_buff_head *pktq, uint totlen)
5adfeb63 721{
a413e39a
AS		 722 struct sk_buff *glom_skb;
723 struct sk_buff *skb;
a7cdd821 724 u32 addr = sdiodev->sbwad;
5adfeb63
AS		 725 int err = 0;
726
a7cdd821
AS		 727 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n",
728 addr, pktq->qlen);
5adfeb63 729
a7cdd821 730 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
5adfeb63 731 if (err)
7057fd00 732 goto done;
5b435de0 733
a413e39a 734 if (pktq->qlen == 1)
a7cdd821
AS		 735 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
736 pktq->next);
a413e39a
AS		 737 else if (!sdiodev->sg_support) {
738 glom_skb = brcmu_pkt_buf_get_skb(totlen);
739 if (!glom_skb)
740 return -ENOMEM;
a7cdd821
AS		 741 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
742 glom_skb);
a413e39a
AS		 743 if (err)
744 goto done;
745
746 skb_queue_walk(pktq, skb) {
747 memcpy(skb->data, glom_skb->data, skb->len);
748 skb_pull(glom_skb, skb->len);
749 }
750 } else
a7cdd821
AS		 751 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr,
752 pktq);
5b435de0 753
7057fd00 754done:
5adfeb63 755 return err;
5b435de0
AS		 756}
757
a7cdd821 758int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
5adfeb63
AS		 759{
760 struct sk_buff *mypkt;
a7cdd821 761 u32 addr = sdiodev->sbwad;
5adfeb63
AS		 762 int err;
763
764 mypkt = brcmu_pkt_buf_get_skb(nbytes);
765 if (!mypkt) {
5e8149f5 766 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
5adfeb63
AS		 767 nbytes);
768 return -EIO;
769 }
770
771 memcpy(mypkt->data, buf, nbytes);
4aef267e 772
a7cdd821 773 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
4aef267e 774
fcaac2b1 775 if (!err)
a7cdd821
AS		 776 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr,
777 mypkt);
5adfeb63
AS		 778
779 brcmu_pkt_buf_free_skb(mypkt);
780 return err;
781
782}
783
a7cdd821
AS		 784int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
785 struct sk_buff_head *pktq)
5b435de0 786{
c8cce1f9 787 struct sk_buff *skb;
a7cdd821 788 u32 addr = sdiodev->sbwad;
fcaac2b1 789 int err;
5b435de0 790
a7cdd821 791 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen);
5b435de0 792
a7cdd821 793 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
fcaac2b1
AS		 794 if (err)
795 return err;
5b435de0 796
c8cce1f9
AS		 797 if (pktq->qlen == 1 || !sdiodev->sg_support)
798 skb_queue_walk(pktq, skb) {
a7cdd821
AS		 799 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true,
800 addr, skb);
c8cce1f9
AS		 801 if (err)
802 break;
803 }
804 else
a7cdd821
AS		 805 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr,
806 pktq);
c8cce1f9
AS		 807
808 return err;
5b435de0
AS		 809}
810
ba540b01 811int
a39be27b
AS		 812brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
813 u8 *data, uint size)
5b435de0 814{
ba540b01
FL		 815 int bcmerror = 0;
816 struct sk_buff *pkt;
817 u32 sdaddr;
818 uint dsize;
819
820 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
821 pkt = dev_alloc_skb(dsize);
822 if (!pkt) {
823 brcmf_err("dev_alloc_skb failed: len %d\n", dsize);
824 return -EIO;
825 }
826 pkt->priority = 0;
4c6e869d 827
ba540b01
FL		 828 /* Determine initial transfer parameters */
829 sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK;
830 if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK)
831 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr);
832 else
833 dsize = size;
5b435de0 834
ba540b01
FL		 835 sdio_claim_host(sdiodev->func[1]);
836
837 /* Do the transfer(s) */
838 while (size) {
839 /* Set the backplane window to include the start address */
a39be27b 840 bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address);
ba540b01
FL		 841 if (bcmerror)
842 break;
843
844 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n",
845 write ? "write" : "read", dsize,
846 sdaddr, address & SBSDIO_SBWINDOW_MASK);
847
848 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK;
849 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
850
851 skb_put(pkt, dsize);
852 if (write)
853 memcpy(pkt->data, data, dsize);
a39be27b
AS		 854 bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write,
855 sdaddr, pkt);
ba540b01
FL		 856 if (bcmerror) {
857 brcmf_err("membytes transfer failed\n");
858 break;
859 }
860 if (!write)
861 memcpy(data, pkt->data, dsize);
862 skb_trim(pkt, dsize);
863
864 /* Adjust for next transfer (if any) */
865 size -= dsize;
866 if (size) {
867 data += dsize;
868 address += dsize;
869 sdaddr = 0;
870 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
871 }
4c6e869d
AS		 872 }
873
ba540b01 874 dev_kfree_skb(pkt);
4c6e869d 875
ba540b01 876 /* Return the window to backplane enumeration space for core access */
a39be27b 877 if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad))
ba540b01
FL		 878 brcmf_err("FAILED to set window back to 0x%x\n",
879 sdiodev->sbwad);
4c6e869d 880
ba540b01 881 sdio_release_host(sdiodev->func[1]);
4c6e869d 882
ba540b01 883 return bcmerror;
5b435de0
AS		 884}
885
a39be27b 886int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
5b435de0
AS		 887{
888 char t_func = (char)fn;
c3203374 889 brcmf_dbg(SDIO, "Enter\n");
5b435de0
AS		 890
891 /* issue abort cmd52 command through F0 */
a39be27b 892 brcmf_sdiod_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0,
5b435de0
AS		 893 SDIO_CCCR_ABORT, &t_func);
894
c3203374 895 brcmf_dbg(SDIO, "Exit\n");
5b435de0
AS		 896 return 0;
897}
898
a39be27b
AS		 899static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev)
900{
901 sdiodev->bus_if->state = BRCMF_BUS_DOWN;
902
903 if (sdiodev->bus) {
904 brcmf_sdbrcm_disconnect(sdiodev->bus);
905 sdiodev->bus = NULL;
906 }
907
908 /* Disable Function 2 */
909 sdio_claim_host(sdiodev->func[2]);
910 sdio_disable_func(sdiodev->func[2]);
911 sdio_release_host(sdiodev->func[2]);
912
913 /* Disable Function 1 */
914 sdio_claim_host(sdiodev->func[1]);
915 sdio_disable_func(sdiodev->func[1]);
916 sdio_release_host(sdiodev->func[1]);
917
918 sdiodev->sbwad = 0;
919
920 return 0;
921}
922
923static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev)
e2dc9eea 924{
e2dc9eea 925 struct sdio_func *func;
a39be27b 926 struct mmc_host *host;
e2dc9eea 927 uint max_blocks;
a39be27b 928 int ret = 0;
e2dc9eea
AS		 929
930 sdiodev->num_funcs = 2;
931
932 sdio_claim_host(sdiodev->func[1]);
933
a39be27b
AS		 934 ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
935 if (ret) {
e2dc9eea 936 brcmf_err("Failed to set F1 blocksize\n");
a39be27b 937 sdio_release_host(sdiodev->func[1]);
e2dc9eea
AS		 938 goto out;
939 }
a39be27b
AS		 940 ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
941 if (ret) {
e2dc9eea 942 brcmf_err("Failed to set F2 blocksize\n");
a39be27b 943 sdio_release_host(sdiodev->func[1]);
e2dc9eea
AS		 944 goto out;
945 }
946
71370eb8
AS		 947 /* increase F2 timeout */
948 sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY;
949
463c30b3 950 /* Enable Function 1 */
a39be27b
AS		 951 ret = sdio_enable_func(sdiodev->func[1]);
952 sdio_release_host(sdiodev->func[1]);
953 if (ret) {
954 brcmf_err("Failed to enable F1: err=%d\n", ret);
463c30b3
AS		 955 goto out;
956 }
e2dc9eea
AS		 957
958 /*
a39be27b 959 * determine host related variables after brcmf_sdiod_probe()
e2dc9eea
AS		 960 * as func->cur_blksize is properly set and F2 init has been
961 * completed successfully.
962 */
963 func = sdiodev->func[2];
964 host = func->card->host;
965 sdiodev->sg_support = host->max_segs > 1;
966 max_blocks = min_t(uint, host->max_blk_count, 511u);
967 sdiodev->max_request_size = min_t(uint, host->max_req_size,
968 max_blocks * func->cur_blksize);
969 sdiodev->max_segment_count = min_t(uint, host->max_segs,
970 SG_MAX_SINGLE_ALLOC);
971 sdiodev->max_segment_size = host->max_seg_size;
e49b06ba 972
e49b06ba 973 /* try to attach to the target device */
4744d164 974 sdiodev->bus = brcmf_sdbrcm_probe(sdiodev);
e49b06ba 975 if (!sdiodev->bus) {
e49b06ba
AS		 976 ret = -ENODEV;
977 goto out;
978 }
979
980out:
981 if (ret)
a39be27b 982 brcmf_sdiod_remove(sdiodev);
e49b06ba
AS		 983
984 return ret;
985}
986
987/* devices we support, null terminated */
988static const struct sdio_device_id brcmf_sdmmc_ids[] = {
989 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43143)},
990 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43241)},
991 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
992 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
993 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4334)},
994 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM,
995 SDIO_DEVICE_ID_BROADCOM_4335_4339)},
996 { /* end: all zeroes */ },
997};
998MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
999
1000static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata;
1001
1002
e2dc9eea
AS		 1003static int brcmf_ops_sdio_probe(struct sdio_func *func,
1004 const struct sdio_device_id *id)
1005{
1006 int err;
1007 struct brcmf_sdio_dev *sdiodev;
1008 struct brcmf_bus *bus_if;
1009
1010 brcmf_dbg(SDIO, "Enter\n");
1011 brcmf_dbg(SDIO, "Class=%x\n", func->class);
1012 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1013 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1014 brcmf_dbg(SDIO, "Function#: %d\n", func->num);
1015
1016 /* Consume func num 1 but dont do anything with it. */
1017 if (func->num == 1)
1018 return 0;
1019
1020 /* Ignore anything but func 2 */
1021 if (func->num != 2)
1022 return -ENODEV;
1023
1024 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
1025 if (!bus_if)
1026 return -ENOMEM;
1027 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
1028 if (!sdiodev) {
1029 kfree(bus_if);
1030 return -ENOMEM;
1031 }
1032
1033 sdiodev->func[0] = func->card->sdio_func[0];
1034 sdiodev->func[1] = func->card->sdio_func[0];
1035 sdiodev->func[2] = func;
1036
1037 sdiodev->bus_if = bus_if;
1038 bus_if->bus_priv.sdio = sdiodev;
1039 dev_set_drvdata(&func->dev, bus_if);
1040 dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
1041 sdiodev->dev = &sdiodev->func[1]->dev;
1042 sdiodev->pdata = brcmfmac_sdio_pdata;
1043
1044 atomic_set(&sdiodev->suspend, false);
1045 init_waitqueue_head(&sdiodev->request_byte_wait);
1046 init_waitqueue_head(&sdiodev->request_word_wait);
1047 init_waitqueue_head(&sdiodev->request_buffer_wait);
1048
a39be27b
AS		 1049 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n");
1050 err = brcmf_sdiod_probe(sdiodev);
e2dc9eea
AS		 1051 if (err) {
1052 brcmf_err("F2 error, probe failed %d...\n", err);
1053 goto fail;
1054 }
1055
1056 brcmf_dbg(SDIO, "F2 init completed...\n");
1057 return 0;
1058
1059fail:
1060 dev_set_drvdata(&func->dev, NULL);
1061 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1062 kfree(sdiodev);
1063 kfree(bus_if);
1064 return err;
1065}
1066
1067static void brcmf_ops_sdio_remove(struct sdio_func *func)
1068{
1069 struct brcmf_bus *bus_if;
1070 struct brcmf_sdio_dev *sdiodev;
1071
1072 brcmf_dbg(SDIO, "Enter\n");
1073 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1074 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1075 brcmf_dbg(SDIO, "Function: %d\n", func->num);
1076
1077 if (func->num != 1 && func->num != 2)
1078 return;
1079
1080 bus_if = dev_get_drvdata(&func->dev);
1081 if (bus_if) {
1082 sdiodev = bus_if->bus_priv.sdio;
a39be27b 1083 brcmf_sdiod_remove(sdiodev);
e2dc9eea
AS		 1084
1085 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1086 dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
1087
1088 kfree(bus_if);
1089 kfree(sdiodev);
1090 }
1091
1092 brcmf_dbg(SDIO, "Exit\n");
1093}
1094
1095#ifdef CONFIG_PM_SLEEP
a39be27b 1096static int brcmf_ops_sdio_suspend(struct device *dev)
e2dc9eea
AS		 1097{
1098 mmc_pm_flag_t sdio_flags;
1099 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1100 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1101 int ret = 0;
1102
1103 brcmf_dbg(SDIO, "\n");
1104
1105 atomic_set(&sdiodev->suspend, true);
1106
1107 sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
1108 if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
1109 brcmf_err("Host can't keep power while suspended\n");
1110 return -EINVAL;
1111 }
1112
1113 ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
1114 if (ret) {
1115 brcmf_err("Failed to set pm_flags\n");
1116 return ret;
1117 }
1118
6043033c 1119 brcmf_sdbrcm_wd_timer(sdiodev->bus, 0);
e2dc9eea
AS		 1120
1121 return ret;
1122}
1123
a39be27b 1124static int brcmf_ops_sdio_resume(struct device *dev)
e2dc9eea
AS		 1125{
1126 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1127 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1128
6043033c 1129 brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
e2dc9eea
AS		 1130 atomic_set(&sdiodev->suspend, false);
1131 return 0;
1132}
1133
1134static const struct dev_pm_ops brcmf_sdio_pm_ops = {
a39be27b
AS		 1135 .suspend = brcmf_ops_sdio_suspend,
1136 .resume = brcmf_ops_sdio_resume,
e2dc9eea
AS		 1137};
1138#endif /* CONFIG_PM_SLEEP */
1139
1140static struct sdio_driver brcmf_sdmmc_driver = {
1141 .probe = brcmf_ops_sdio_probe,
1142 .remove = brcmf_ops_sdio_remove,
1143 .name = BRCMFMAC_SDIO_PDATA_NAME,
1144 .id_table = brcmf_sdmmc_ids,
1145#ifdef CONFIG_PM_SLEEP
1146 .drv = {
1147 .pm = &brcmf_sdio_pm_ops,
1148 },
1149#endif /* CONFIG_PM_SLEEP */
1150};
1151
1152static int brcmf_sdio_pd_probe(struct platform_device *pdev)
1153{
1154 brcmf_dbg(SDIO, "Enter\n");
1155
1156 brcmfmac_sdio_pdata = dev_get_platdata(&pdev->dev);
1157
1158 if (brcmfmac_sdio_pdata->power_on)
1159 brcmfmac_sdio_pdata->power_on();
1160
1161 return 0;
1162}
1163
1164static int brcmf_sdio_pd_remove(struct platform_device *pdev)
1165{
1166 brcmf_dbg(SDIO, "Enter\n");
1167
1168 if (brcmfmac_sdio_pdata->power_off)
1169 brcmfmac_sdio_pdata->power_off();
1170
1171 sdio_unregister_driver(&brcmf_sdmmc_driver);
1172
1173 return 0;
1174}
1175
1176static struct platform_driver brcmf_sdio_pd = {
1177 .remove = brcmf_sdio_pd_remove,
1178 .driver = {
1179 .name = BRCMFMAC_SDIO_PDATA_NAME,
1180 .owner = THIS_MODULE,
1181 }
1182};
1183
1184void brcmf_sdio_register(void)
1185{
1186 int ret;
1187
1188 ret = sdio_register_driver(&brcmf_sdmmc_driver);
1189 if (ret)
1190 brcmf_err("sdio_register_driver failed: %d\n", ret);
1191}
1192
1193void brcmf_sdio_exit(void)
1194{
1195 brcmf_dbg(SDIO, "Enter\n");
1196
1197 if (brcmfmac_sdio_pdata)
1198 platform_driver_unregister(&brcmf_sdio_pd);
1199 else
1200 sdio_unregister_driver(&brcmf_sdmmc_driver);
1201}
1202
1203void __init brcmf_sdio_init(void)
1204{
1205 int ret;
1206
1207 brcmf_dbg(SDIO, "Enter\n");
1208
1209 ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe);
1210 if (ret == -ENODEV)
1211 brcmf_dbg(SDIO, "No platform data available.\n");
1212}
Linux kernel - Deliverables
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