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Merge remote-tracking branch 'omap_dss2/for-next'
[deliverable/linux.git] / drivers / net / wireless / broadcom / brcm80211 / brcmfmac / bcmsdh.c
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_4339),
1105 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430),
1106 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345),
1107 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354),
1108 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4356),
1109 { /* end: all zeroes */ }
1110 };
1111 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
1112
1113
1114 static void brcmf_sdiod_acpi_set_power_manageable(struct device *dev,
1115 int val)
1116 {
1117 #if IS_ENABLED(CONFIG_ACPI)
1118 struct acpi_device *adev;
1119
1120 adev = ACPI_COMPANION(dev);
1121 if (adev)
1122 adev->flags.power_manageable = 0;
1123 #endif
1124 }
1125
1126 static int brcmf_ops_sdio_probe(struct sdio_func *func,
1127 const struct sdio_device_id *id)
1128 {
1129 int err;
1130 struct brcmf_sdio_dev *sdiodev;
1131 struct brcmf_bus *bus_if;
1132 struct device *dev;
1133
1134 brcmf_dbg(SDIO, "Enter\n");
1135 brcmf_dbg(SDIO, "Class=%x\n", func->class);
1136 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1137 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1138 brcmf_dbg(SDIO, "Function#: %d\n", func->num);
1139
1140 dev = &func->dev;
1141 /* prohibit ACPI power management for this device */
1142 brcmf_sdiod_acpi_set_power_manageable(dev, 0);
1143
1144 /* Consume func num 1 but dont do anything with it. */
1145 if (func->num == 1)
1146 return 0;
1147
1148 /* Ignore anything but func 2 */
1149 if (func->num != 2)
1150 return -ENODEV;
1151
1152 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
1153 if (!bus_if)
1154 return -ENOMEM;
1155 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
1156 if (!sdiodev) {
1157 kfree(bus_if);
1158 return -ENOMEM;
1159 }
1160
1161 /* store refs to functions used. mmc_card does
1162 * not hold the F0 function pointer.
1163 */
1164 sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL);
1165 sdiodev->func[0]->num = 0;
1166 sdiodev->func[1] = func->card->sdio_func[0];
1167 sdiodev->func[2] = func;
1168
1169 sdiodev->bus_if = bus_if;
1170 bus_if->bus_priv.sdio = sdiodev;
1171 bus_if->proto_type = BRCMF_PROTO_BCDC;
1172 dev_set_drvdata(&func->dev, bus_if);
1173 dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
1174 sdiodev->dev = &sdiodev->func[1]->dev;
1175
1176 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN);
1177
1178 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n");
1179 err = brcmf_sdiod_probe(sdiodev);
1180 if (err) {
1181 brcmf_err("F2 error, probe failed %d...\n", err);
1182 goto fail;
1183 }
1184
1185 brcmf_dbg(SDIO, "F2 init completed...\n");
1186 return 0;
1187
1188 fail:
1189 dev_set_drvdata(&func->dev, NULL);
1190 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1191 kfree(sdiodev->func[0]);
1192 kfree(sdiodev);
1193 kfree(bus_if);
1194 return err;
1195 }
1196
1197 static void brcmf_ops_sdio_remove(struct sdio_func *func)
1198 {
1199 struct brcmf_bus *bus_if;
1200 struct brcmf_sdio_dev *sdiodev;
1201
1202 brcmf_dbg(SDIO, "Enter\n");
1203 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1204 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1205 brcmf_dbg(SDIO, "Function: %d\n", func->num);
1206
1207 bus_if = dev_get_drvdata(&func->dev);
1208 if (bus_if) {
1209 sdiodev = bus_if->bus_priv.sdio;
1210
1211 /* start by unregistering irqs */
1212 brcmf_sdiod_intr_unregister(sdiodev);
1213
1214 if (func->num != 1)
1215 return;
1216
1217 /* only proceed with rest of cleanup if func 1 */
1218 brcmf_sdiod_remove(sdiodev);
1219
1220 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1221 dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
1222
1223 kfree(bus_if);
1224 kfree(sdiodev->func[0]);
1225 kfree(sdiodev);
1226 }
1227
1228 brcmf_dbg(SDIO, "Exit\n");
1229 }
1230
1231 void brcmf_sdio_wowl_config(struct device *dev, bool enabled)
1232 {
1233 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1234 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1235
1236 brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled);
1237 sdiodev->wowl_enabled = enabled;
1238 }
1239
1240 #ifdef CONFIG_PM_SLEEP
1241 static int brcmf_ops_sdio_suspend(struct device *dev)
1242 {
1243 struct sdio_func *func;
1244 struct brcmf_bus *bus_if;
1245 struct brcmf_sdio_dev *sdiodev;
1246 mmc_pm_flag_t sdio_flags;
1247
1248 func = container_of(dev, struct sdio_func, dev);
1249 brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1250 if (func->num != SDIO_FUNC_1)
1251 return 0;
1252
1253
1254 bus_if = dev_get_drvdata(dev);
1255 sdiodev = bus_if->bus_priv.sdio;
1256
1257 brcmf_sdiod_freezer_on(sdiodev);
1258 brcmf_sdio_wd_timer(sdiodev->bus, 0);
1259
1260 sdio_flags = MMC_PM_KEEP_POWER;
1261 if (sdiodev->wowl_enabled) {
1262 if (sdiodev->settings->bus.sdio.oob_irq_supported)
1263 enable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr);
1264 else
1265 sdio_flags |= MMC_PM_WAKE_SDIO_IRQ;
1266 }
1267 if (sdio_set_host_pm_flags(sdiodev->func[1], sdio_flags))
1268 brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
1269 return 0;
1270 }
1271
1272 static int brcmf_ops_sdio_resume(struct device *dev)
1273 {
1274 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1275 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1276 struct sdio_func *func = container_of(dev, struct sdio_func, dev);
1277
1278 brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1279 if (func->num != SDIO_FUNC_2)
1280 return 0;
1281
1282 brcmf_sdiod_freezer_off(sdiodev);
1283 return 0;
1284 }
1285
1286 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
1287 .suspend = brcmf_ops_sdio_suspend,
1288 .resume = brcmf_ops_sdio_resume,
1289 };
1290 #endif /* CONFIG_PM_SLEEP */
1291
1292 static struct sdio_driver brcmf_sdmmc_driver = {
1293 .probe = brcmf_ops_sdio_probe,
1294 .remove = brcmf_ops_sdio_remove,
1295 .name = KBUILD_MODNAME,
1296 .id_table = brcmf_sdmmc_ids,
1297 .drv = {
1298 .owner = THIS_MODULE,
1299 #ifdef CONFIG_PM_SLEEP
1300 .pm = &brcmf_sdio_pm_ops,
1301 #endif /* CONFIG_PM_SLEEP */
1302 },
1303 };
1304
1305 void brcmf_sdio_register(void)
1306 {
1307 int ret;
1308
1309 ret = sdio_register_driver(&brcmf_sdmmc_driver);
1310 if (ret)
1311 brcmf_err("sdio_register_driver failed: %d\n", ret);
1312 }
1313
1314 void brcmf_sdio_exit(void)
1315 {
1316 brcmf_dbg(SDIO, "Enter\n");
1317
1318 sdio_unregister_driver(&brcmf_sdmmc_driver);
1319 }
1320
Linux kernel - Deliverables
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