]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
projects / mirror_ubuntu-artful-kernel.git / blob
? search:


9b970dc2b922a8dd0e4c4199442f5976f7649798
[mirror_ubuntu-artful-kernel.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/interrupt.h>
25 #include <linux/scatterlist.h>
26 #include <linux/mmc/sdio.h>
27 #include <linux/mmc/core.h>
28 #include <linux/mmc/sdio_func.h>
29 #include <linux/mmc/card.h>
30 #include <linux/mmc/host.h>
31 #include <linux/pm_runtime.h>
32 #include <linux/suspend.h>
33 #include <linux/errno.h>
34 #include <linux/module.h>
35 #include <linux/acpi.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 "core.h"
49 #include "common.h"
50
51 #define SDIOH_API_ACCESS_RETRY_LIMIT 2
52
53 #define DMA_ALIGN_MASK 0x03
54
55 #define SDIO_FUNC1_BLOCKSIZE 64
56 #define SDIO_FUNC2_BLOCKSIZE 512
57 /* Maximum milliseconds to wait for F2 to come up */
58 #define SDIO_WAIT_F2RDY 3000
59
60 #define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */
61
62 struct 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
70 static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id)
71 {
72 struct brcmf_bus *bus_if = dev_get_drvdata(dev_id);
73 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
74
75 brcmf_dbg(INTR, "OOB intr triggered\n");
76
77 /* out-of-band interrupt is level-triggered which won't
78 * be cleared until dpc
79 */
80 if (sdiodev->irq_en) {
81 disable_irq_nosync(irq);
82 sdiodev->irq_en = false;
83 }
84
85 brcmf_sdio_isr(sdiodev->bus);
86
87 return IRQ_HANDLED;
88 }
89
90 static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func)
91 {
92 struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev);
93 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
94
95 brcmf_dbg(INTR, "IB intr triggered\n");
96
97 brcmf_sdio_isr(sdiodev->bus);
98 }
99
100 /* dummy handler for SDIO function 2 interrupt */
101 static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func)
102 {
103 }
104
105 int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev)
106 {
107 struct brcmfmac_sdio_pd *pdata;
108 int ret = 0;
109 u8 data;
110 u32 addr, gpiocontrol;
111 unsigned long flags;
112
113 pdata = &sdiodev->settings->bus.sdio;
114 if (pdata->oob_irq_supported) {
115 brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n",
116 pdata->oob_irq_nr);
117 ret = request_irq(pdata->oob_irq_nr, brcmf_sdiod_oob_irqhandler,
118 pdata->oob_irq_flags, "brcmf_oob_intr",
119 &sdiodev->func[1]->dev);
120 if (ret != 0) {
121 brcmf_err("request_irq failed %d\n", ret);
122 return ret;
123 }
124 sdiodev->oob_irq_requested = true;
125 spin_lock_init(&sdiodev->irq_en_lock);
126 spin_lock_irqsave(&sdiodev->irq_en_lock, flags);
127 sdiodev->irq_en = true;
128 spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags);
129
130 ret = enable_irq_wake(pdata->oob_irq_nr);
131 if (ret != 0) {
132 brcmf_err("enable_irq_wake failed %d\n", ret);
133 return ret;
134 }
135 sdiodev->irq_wake = true;
136
137 sdio_claim_host(sdiodev->func[1]);
138
139 if (sdiodev->bus_if->chip == BRCM_CC_43362_CHIP_ID) {
140 /* assign GPIO to SDIO core */
141 addr = CORE_CC_REG(SI_ENUM_BASE, gpiocontrol);
142 gpiocontrol = brcmf_sdiod_regrl(sdiodev, addr, &ret);
143 gpiocontrol |= 0x2;
144 brcmf_sdiod_regwl(sdiodev, addr, gpiocontrol, &ret);
145
146 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_SELECT, 0xf,
147 &ret);
148 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_OUT, 0, &ret);
149 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_EN, 0x2, &ret);
150 }
151
152 /* must configure SDIO_CCCR_IENx to enable irq */
153 data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret);
154 data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1;
155 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret);
156
157 /* redirect, configure and enable io for interrupt signal */
158 data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE;
159 if (pdata->oob_irq_flags & IRQF_TRIGGER_HIGH)
160 data |= SDIO_SEPINT_ACT_HI;
161 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret);
162
163 sdio_release_host(sdiodev->func[1]);
164 } else {
165 brcmf_dbg(SDIO, "Entering\n");
166 sdio_claim_host(sdiodev->func[1]);
167 sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler);
168 sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler);
169 sdio_release_host(sdiodev->func[1]);
170 sdiodev->sd_irq_requested = true;
171 }
172
173 return 0;
174 }
175
176 void brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
177 {
178
179 brcmf_dbg(SDIO, "Entering oob=%d sd=%d\n",
180 sdiodev->oob_irq_requested,
181 sdiodev->sd_irq_requested);
182
183 if (sdiodev->oob_irq_requested) {
184 struct brcmfmac_sdio_pd *pdata;
185
186 pdata = &sdiodev->settings->bus.sdio;
187 sdio_claim_host(sdiodev->func[1]);
188 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
189 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
190 sdio_release_host(sdiodev->func[1]);
191
192 sdiodev->oob_irq_requested = false;
193 if (sdiodev->irq_wake) {
194 disable_irq_wake(pdata->oob_irq_nr);
195 sdiodev->irq_wake = false;
196 }
197 free_irq(pdata->oob_irq_nr, &sdiodev->func[1]->dev);
198 sdiodev->irq_en = false;
199 sdiodev->oob_irq_requested = false;
200 }
201
202 if (sdiodev->sd_irq_requested) {
203 sdio_claim_host(sdiodev->func[1]);
204 sdio_release_irq(sdiodev->func[2]);
205 sdio_release_irq(sdiodev->func[1]);
206 sdio_release_host(sdiodev->func[1]);
207 sdiodev->sd_irq_requested = false;
208 }
209 }
210
211 void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev,
212 enum brcmf_sdiod_state state)
213 {
214 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM ||
215 state == sdiodev->state)
216 return;
217
218 brcmf_dbg(TRACE, "%d -> %d\n", sdiodev->state, state);
219 switch (sdiodev->state) {
220 case BRCMF_SDIOD_DATA:
221 /* any other state means bus interface is down */
222 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN);
223 break;
224 case BRCMF_SDIOD_DOWN:
225 /* transition from DOWN to DATA means bus interface is up */
226 if (state == BRCMF_SDIOD_DATA)
227 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_UP);
228 break;
229 default:
230 break;
231 }
232 sdiodev->state = state;
233 }
234
235 static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func,
236 uint regaddr, u8 byte)
237 {
238 int err_ret;
239
240 /*
241 * Can only directly write to some F0 registers.
242 * Handle CCCR_IENx and CCCR_ABORT command
243 * as a special case.
244 */
245 if ((regaddr == SDIO_CCCR_ABORT) ||
246 (regaddr == SDIO_CCCR_IENx))
247 sdio_writeb(func, byte, regaddr, &err_ret);
248 else
249 sdio_f0_writeb(func, byte, regaddr, &err_ret);
250
251 return err_ret;
252 }
253
254 static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn,
255 u32 addr, u8 regsz, void *data, bool write)
256 {
257 struct sdio_func *func;
258 int ret = -EINVAL;
259
260 brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
261 write, fn, addr, regsz);
262
263 /* only allow byte access on F0 */
264 if (WARN_ON(regsz > 1 && !fn))
265 return -EINVAL;
266 func = sdiodev->func[fn];
267
268 switch (regsz) {
269 case sizeof(u8):
270 if (write) {
271 if (fn)
272 sdio_writeb(func, *(u8 *)data, addr, &ret);
273 else
274 ret = brcmf_sdiod_f0_writeb(func, addr,
275 *(u8 *)data);
276 } else {
277 if (fn)
278 *(u8 *)data = sdio_readb(func, addr, &ret);
279 else
280 *(u8 *)data = sdio_f0_readb(func, addr, &ret);
281 }
282 break;
283 case sizeof(u16):
284 if (write)
285 sdio_writew(func, *(u16 *)data, addr, &ret);
286 else
287 *(u16 *)data = sdio_readw(func, addr, &ret);
288 break;
289 case sizeof(u32):
290 if (write)
291 sdio_writel(func, *(u32 *)data, addr, &ret);
292 else
293 *(u32 *)data = sdio_readl(func, addr, &ret);
294 break;
295 default:
296 brcmf_err("invalid size: %d\n", regsz);
297 break;
298 }
299
300 if (ret)
301 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
302 write ? "write" : "read", fn, addr, ret);
303
304 return ret;
305 }
306
307 static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
308 u8 regsz, void *data, bool write)
309 {
310 u8 func;
311 s32 retry = 0;
312 int ret;
313
314 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
315 return -ENOMEDIUM;
316
317 /*
318 * figure out how to read the register based on address range
319 * 0x00 ~ 0x7FF: function 0 CCCR and FBR
320 * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
321 * The rest: function 1 silicon backplane core registers
322 */
323 if ((addr & ~REG_F0_REG_MASK) == 0)
324 func = SDIO_FUNC_0;
325 else
326 func = SDIO_FUNC_1;
327
328 do {
329 if (!write)
330 memset(data, 0, regsz);
331 /* for retry wait for 1 ms till bus get settled down */
332 if (retry)
333 usleep_range(1000, 2000);
334 ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz,
335 data, write);
336 } while (ret != 0 && ret != -ENOMEDIUM &&
337 retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
338
339 if (ret == -ENOMEDIUM)
340 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
341 else if (ret != 0) {
342 /*
343 * SleepCSR register access can fail when
344 * waking up the device so reduce this noise
345 * in the logs.
346 */
347 if (addr != SBSDIO_FUNC1_SLEEPCSR)
348 brcmf_err("failed to %s data F%d@0x%05x, err: %d\n",
349 write ? "write" : "read", func, addr, ret);
350 else
351 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
352 write ? "write" : "read", func, addr, ret);
353 }
354 return ret;
355 }
356
357 static int
358 brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
359 {
360 int err = 0, i;
361 u8 addr[3];
362
363 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
364 return -ENOMEDIUM;
365
366 addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
367 addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK;
368 addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK;
369
370 for (i = 0; i < 3; i++) {
371 err = brcmf_sdiod_regrw_helper(sdiodev,
372 SBSDIO_FUNC1_SBADDRLOW + i,
373 sizeof(u8), &addr[i], true);
374 if (err) {
375 brcmf_err("failed at addr: 0x%0x\n",
376 SBSDIO_FUNC1_SBADDRLOW + i);
377 break;
378 }
379 }
380
381 return err;
382 }
383
384 static int
385 brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr)
386 {
387 uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
388 int err = 0;
389
390 if (bar0 != sdiodev->sbwad) {
391 err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0);
392 if (err)
393 return err;
394
395 sdiodev->sbwad = bar0;
396 }
397
398 *addr &= SBSDIO_SB_OFT_ADDR_MASK;
399
400 if (width == 4)
401 *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
402
403 return 0;
404 }
405
406 u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
407 {
408 u8 data;
409 int retval;
410
411 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
412 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
413 false);
414 brcmf_dbg(SDIO, "data:0x%02x\n", data);
415
416 if (ret)
417 *ret = retval;
418
419 return data;
420 }
421
422 u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
423 {
424 u32 data = 0;
425 int retval;
426
427 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
428 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
429 if (retval)
430 goto done;
431 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
432 false);
433 brcmf_dbg(SDIO, "data:0x%08x\n", data);
434
435 done:
436 if (ret)
437 *ret = retval;
438
439 return data;
440 }
441
442 void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
443 u8 data, int *ret)
444 {
445 int retval;
446
447 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data);
448 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
449 true);
450 if (ret)
451 *ret = retval;
452 }
453
454 void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
455 u32 data, int *ret)
456 {
457 int retval;
458
459 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data);
460 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
461 if (retval)
462 goto done;
463 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
464 true);
465
466 done:
467 if (ret)
468 *ret = retval;
469 }
470
471 static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn,
472 bool write, u32 addr, struct sk_buff *pkt)
473 {
474 unsigned int req_sz;
475 int err;
476
477 /* Single skb use the standard mmc interface */
478 req_sz = pkt->len + 3;
479 req_sz &= (uint)~3;
480
481 if (write)
482 err = sdio_memcpy_toio(sdiodev->func[fn], addr,
483 ((u8 *)(pkt->data)), req_sz);
484 else if (fn == 1)
485 err = sdio_memcpy_fromio(sdiodev->func[fn], ((u8 *)(pkt->data)),
486 addr, req_sz);
487 else
488 /* function 2 read is FIFO operation */
489 err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr,
490 req_sz);
491 if (err == -ENOMEDIUM)
492 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
493 return err;
494 }
495
496 /**
497 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access
498 * @sdiodev: brcmfmac sdio device
499 * @fn: SDIO function number
500 * @write: direction flag
501 * @addr: dongle memory address as source/destination
502 * @pkt: skb pointer
503 *
504 * This function takes the respbonsibility as the interface function to MMC
505 * stack for block data access. It assumes that the skb passed down by the
506 * caller has already been padded and aligned.
507 */
508 static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn,
509 bool write, u32 addr,
510 struct sk_buff_head *pktlist)
511 {
512 unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset;
513 unsigned int max_req_sz, orig_offset, dst_offset;
514 unsigned short max_seg_cnt, seg_sz;
515 unsigned char *pkt_data, *orig_data, *dst_data;
516 struct sk_buff *pkt_next = NULL, *local_pkt_next;
517 struct sk_buff_head local_list, *target_list;
518 struct mmc_request mmc_req;
519 struct mmc_command mmc_cmd;
520 struct mmc_data mmc_dat;
521 struct scatterlist *sgl;
522 int ret = 0;
523
524 if (!pktlist->qlen)
525 return -EINVAL;
526
527 target_list = pktlist;
528 /* for host with broken sg support, prepare a page aligned list */
529 __skb_queue_head_init(&local_list);
530 if (!write && sdiodev->settings->bus.sdio.broken_sg_support) {
531 req_sz = 0;
532 skb_queue_walk(pktlist, pkt_next)
533 req_sz += pkt_next->len;
534 req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize);
535 while (req_sz > PAGE_SIZE) {
536 pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE);
537 if (pkt_next == NULL) {
538 ret = -ENOMEM;
539 goto exit;
540 }
541 __skb_queue_tail(&local_list, pkt_next);
542 req_sz -= PAGE_SIZE;
543 }
544 pkt_next = brcmu_pkt_buf_get_skb(req_sz);
545 if (pkt_next == NULL) {
546 ret = -ENOMEM;
547 goto exit;
548 }
549 __skb_queue_tail(&local_list, pkt_next);
550 target_list = &local_list;
551 }
552
553 func_blk_sz = sdiodev->func[fn]->cur_blksize;
554 max_req_sz = sdiodev->max_request_size;
555 max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count,
556 target_list->qlen);
557 seg_sz = target_list->qlen;
558 pkt_offset = 0;
559 pkt_next = target_list->next;
560
561 memset(&mmc_req, 0, sizeof(struct mmc_request));
562 memset(&mmc_cmd, 0, sizeof(struct mmc_command));
563 memset(&mmc_dat, 0, sizeof(struct mmc_data));
564
565 mmc_dat.sg = sdiodev->sgtable.sgl;
566 mmc_dat.blksz = func_blk_sz;
567 mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
568 mmc_cmd.opcode = SD_IO_RW_EXTENDED;
569 mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */
570 mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */
571 mmc_cmd.arg |= 1<<27; /* block mode */
572 /* for function 1 the addr will be incremented */
573 mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0;
574 mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
575 mmc_req.cmd = &mmc_cmd;
576 mmc_req.data = &mmc_dat;
577
578 while (seg_sz) {
579 req_sz = 0;
580 sg_cnt = 0;
581 sgl = sdiodev->sgtable.sgl;
582 /* prep sg table */
583 while (pkt_next != (struct sk_buff *)target_list) {
584 pkt_data = pkt_next->data + pkt_offset;
585 sg_data_sz = pkt_next->len - pkt_offset;
586 if (sg_data_sz > sdiodev->max_segment_size)
587 sg_data_sz = sdiodev->max_segment_size;
588 if (sg_data_sz > max_req_sz - req_sz)
589 sg_data_sz = max_req_sz - req_sz;
590
591 sg_set_buf(sgl, pkt_data, sg_data_sz);
592
593 sg_cnt++;
594 sgl = sg_next(sgl);
595 req_sz += sg_data_sz;
596 pkt_offset += sg_data_sz;
597 if (pkt_offset == pkt_next->len) {
598 pkt_offset = 0;
599 pkt_next = pkt_next->next;
600 }
601
602 if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt)
603 break;
604 }
605 seg_sz -= sg_cnt;
606
607 if (req_sz % func_blk_sz != 0) {
608 brcmf_err("sg request length %u is not %u aligned\n",
609 req_sz, func_blk_sz);
610 ret = -ENOTBLK;
611 goto exit;
612 }
613
614 mmc_dat.sg_len = sg_cnt;
615 mmc_dat.blocks = req_sz / func_blk_sz;
616 mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */
617 mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */
618 /* incrementing addr for function 1 */
619 if (fn == 1)
620 addr += req_sz;
621
622 mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card);
623 mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req);
624
625 ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error;
626 if (ret == -ENOMEDIUM) {
627 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
628 break;
629 } else if (ret != 0) {
630 brcmf_err("CMD53 sg block %s failed %d\n",
631 write ? "write" : "read", ret);
632 ret = -EIO;
633 break;
634 }
635 }
636
637 if (!write && sdiodev->settings->bus.sdio.broken_sg_support) {
638 local_pkt_next = local_list.next;
639 orig_offset = 0;
640 skb_queue_walk(pktlist, pkt_next) {
641 dst_offset = 0;
642 do {
643 req_sz = local_pkt_next->len - orig_offset;
644 req_sz = min_t(uint, pkt_next->len - dst_offset,
645 req_sz);
646 orig_data = local_pkt_next->data + orig_offset;
647 dst_data = pkt_next->data + dst_offset;
648 memcpy(dst_data, orig_data, req_sz);
649 orig_offset += req_sz;
650 dst_offset += req_sz;
651 if (orig_offset == local_pkt_next->len) {
652 orig_offset = 0;
653 local_pkt_next = local_pkt_next->next;
654 }
655 if (dst_offset == pkt_next->len)
656 break;
657 } while (!skb_queue_empty(&local_list));
658 }
659 }
660
661 exit:
662 sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents);
663 while ((pkt_next = __skb_dequeue(&local_list)) != NULL)
664 brcmu_pkt_buf_free_skb(pkt_next);
665
666 return ret;
667 }
668
669 int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
670 {
671 struct sk_buff *mypkt;
672 int err;
673
674 mypkt = brcmu_pkt_buf_get_skb(nbytes);
675 if (!mypkt) {
676 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
677 nbytes);
678 return -EIO;
679 }
680
681 err = brcmf_sdiod_recv_pkt(sdiodev, mypkt);
682 if (!err)
683 memcpy(buf, mypkt->data, nbytes);
684
685 brcmu_pkt_buf_free_skb(mypkt);
686 return err;
687 }
688
689 int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt)
690 {
691 u32 addr = sdiodev->sbwad;
692 int err = 0;
693
694 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len);
695
696 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
697 if (err)
698 goto done;
699
700 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt);
701
702 done:
703 return err;
704 }
705
706 int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
707 struct sk_buff_head *pktq, uint totlen)
708 {
709 struct sk_buff *glom_skb;
710 struct sk_buff *skb;
711 u32 addr = sdiodev->sbwad;
712 int err = 0;
713
714 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n",
715 addr, pktq->qlen);
716
717 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
718 if (err)
719 goto done;
720
721 if (pktq->qlen == 1)
722 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
723 pktq->next);
724 else if (!sdiodev->sg_support) {
725 glom_skb = brcmu_pkt_buf_get_skb(totlen);
726 if (!glom_skb)
727 return -ENOMEM;
728 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
729 glom_skb);
730 if (err) {
731 brcmu_pkt_buf_free_skb(glom_skb);
732 goto done;
733 }
734
735 skb_queue_walk(pktq, skb) {
736 memcpy(skb->data, glom_skb->data, skb->len);
737 skb_pull(glom_skb, skb->len);
738 }
739 } else
740 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr,
741 pktq);
742
743 done:
744 return err;
745 }
746
747 int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
748 {
749 struct sk_buff *mypkt;
750 u32 addr = sdiodev->sbwad;
751 int err;
752
753 mypkt = brcmu_pkt_buf_get_skb(nbytes);
754 if (!mypkt) {
755 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
756 nbytes);
757 return -EIO;
758 }
759
760 memcpy(mypkt->data, buf, nbytes);
761
762 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
763
764 if (!err)
765 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr,
766 mypkt);
767
768 brcmu_pkt_buf_free_skb(mypkt);
769 return err;
770
771 }
772
773 int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
774 struct sk_buff_head *pktq)
775 {
776 struct sk_buff *skb;
777 u32 addr = sdiodev->sbwad;
778 int err;
779
780 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen);
781
782 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
783 if (err)
784 return err;
785
786 if (pktq->qlen == 1 || !sdiodev->sg_support)
787 skb_queue_walk(pktq, skb) {
788 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true,
789 addr, skb);
790 if (err)
791 break;
792 }
793 else
794 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr,
795 pktq);
796
797 return err;
798 }
799
800 int
801 brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
802 u8 *data, uint size)
803 {
804 int bcmerror = 0;
805 struct sk_buff *pkt;
806 u32 sdaddr;
807 uint dsize;
808
809 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
810 pkt = dev_alloc_skb(dsize);
811 if (!pkt) {
812 brcmf_err("dev_alloc_skb failed: len %d\n", dsize);
813 return -EIO;
814 }
815 pkt->priority = 0;
816
817 /* Determine initial transfer parameters */
818 sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK;
819 if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK)
820 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr);
821 else
822 dsize = size;
823
824 sdio_claim_host(sdiodev->func[1]);
825
826 /* Do the transfer(s) */
827 while (size) {
828 /* Set the backplane window to include the start address */
829 bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address);
830 if (bcmerror)
831 break;
832
833 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n",
834 write ? "write" : "read", dsize,
835 sdaddr, address & SBSDIO_SBWINDOW_MASK);
836
837 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK;
838 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
839
840 skb_put(pkt, dsize);
841 if (write)
842 memcpy(pkt->data, data, dsize);
843 bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write,
844 sdaddr, pkt);
845 if (bcmerror) {
846 brcmf_err("membytes transfer failed\n");
847 break;
848 }
849 if (!write)
850 memcpy(data, pkt->data, dsize);
851 skb_trim(pkt, 0);
852
853 /* Adjust for next transfer (if any) */
854 size -= dsize;
855 if (size) {
856 data += dsize;
857 address += dsize;
858 sdaddr = 0;
859 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
860 }
861 }
862
863 dev_kfree_skb(pkt);
864
865 /* Return the window to backplane enumeration space for core access */
866 if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad))
867 brcmf_err("FAILED to set window back to 0x%x\n",
868 sdiodev->sbwad);
869
870 sdio_release_host(sdiodev->func[1]);
871
872 return bcmerror;
873 }
874
875 int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
876 {
877 char t_func = (char)fn;
878 brcmf_dbg(SDIO, "Enter\n");
879
880 /* issue abort cmd52 command through F0 */
881 brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT,
882 sizeof(t_func), &t_func, true);
883
884 brcmf_dbg(SDIO, "Exit\n");
885 return 0;
886 }
887
888 void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev)
889 {
890 struct sdio_func *func;
891 struct mmc_host *host;
892 uint max_blocks;
893 uint nents;
894 int err;
895
896 func = sdiodev->func[2];
897 host = func->card->host;
898 sdiodev->sg_support = host->max_segs > 1;
899 max_blocks = min_t(uint, host->max_blk_count, 511u);
900 sdiodev->max_request_size = min_t(uint, host->max_req_size,
901 max_blocks * func->cur_blksize);
902 sdiodev->max_segment_count = min_t(uint, host->max_segs,
903 SG_MAX_SINGLE_ALLOC);
904 sdiodev->max_segment_size = host->max_seg_size;
905
906 if (!sdiodev->sg_support)
907 return;
908
909 nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE,
910 sdiodev->settings->bus.sdio.txglomsz);
911 nents += (nents >> 4) + 1;
912
913 WARN_ON(nents > sdiodev->max_segment_count);
914
915 brcmf_dbg(TRACE, "nents=%d\n", nents);
916 err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL);
917 if (err < 0) {
918 brcmf_err("allocation failed: disable scatter-gather");
919 sdiodev->sg_support = false;
920 }
921
922 sdiodev->txglomsz = sdiodev->settings->bus.sdio.txglomsz;
923 }
924
925 #ifdef CONFIG_PM_SLEEP
926 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev)
927 {
928 sdiodev->freezer = kzalloc(sizeof(*sdiodev->freezer), GFP_KERNEL);
929 if (!sdiodev->freezer)
930 return -ENOMEM;
931 atomic_set(&sdiodev->freezer->thread_count, 0);
932 atomic_set(&sdiodev->freezer->freezing, 0);
933 init_waitqueue_head(&sdiodev->freezer->thread_freeze);
934 init_completion(&sdiodev->freezer->resumed);
935 return 0;
936 }
937
938 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev)
939 {
940 if (sdiodev->freezer) {
941 WARN_ON(atomic_read(&sdiodev->freezer->freezing));
942 kfree(sdiodev->freezer);
943 }
944 }
945
946 static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev *sdiodev)
947 {
948 atomic_t *expect = &sdiodev->freezer->thread_count;
949 int res = 0;
950
951 sdiodev->freezer->frozen_count = 0;
952 reinit_completion(&sdiodev->freezer->resumed);
953 atomic_set(&sdiodev->freezer->freezing, 1);
954 brcmf_sdio_trigger_dpc(sdiodev->bus);
955 wait_event(sdiodev->freezer->thread_freeze,
956 atomic_read(expect) == sdiodev->freezer->frozen_count);
957 sdio_claim_host(sdiodev->func[1]);
958 res = brcmf_sdio_sleep(sdiodev->bus, true);
959 sdio_release_host(sdiodev->func[1]);
960 return res;
961 }
962
963 static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev *sdiodev)
964 {
965 sdio_claim_host(sdiodev->func[1]);
966 brcmf_sdio_sleep(sdiodev->bus, false);
967 sdio_release_host(sdiodev->func[1]);
968 atomic_set(&sdiodev->freezer->freezing, 0);
969 complete_all(&sdiodev->freezer->resumed);
970 }
971
972 bool brcmf_sdiod_freezing(struct brcmf_sdio_dev *sdiodev)
973 {
974 return atomic_read(&sdiodev->freezer->freezing);
975 }
976
977 void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev *sdiodev)
978 {
979 if (!brcmf_sdiod_freezing(sdiodev))
980 return;
981 sdiodev->freezer->frozen_count++;
982 wake_up(&sdiodev->freezer->thread_freeze);
983 wait_for_completion(&sdiodev->freezer->resumed);
984 }
985
986 void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev *sdiodev)
987 {
988 atomic_inc(&sdiodev->freezer->thread_count);
989 }
990
991 void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev *sdiodev)
992 {
993 atomic_dec(&sdiodev->freezer->thread_count);
994 }
995 #else
996 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev)
997 {
998 return 0;
999 }
1000
1001 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev)
1002 {
1003 }
1004 #endif /* CONFIG_PM_SLEEP */
1005
1006 static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev)
1007 {
1008 sdiodev->state = BRCMF_SDIOD_DOWN;
1009 if (sdiodev->bus) {
1010 brcmf_sdio_remove(sdiodev->bus);
1011 sdiodev->bus = NULL;
1012 }
1013
1014 brcmf_sdiod_freezer_detach(sdiodev);
1015
1016 /* Disable Function 2 */
1017 sdio_claim_host(sdiodev->func[2]);
1018 sdio_disable_func(sdiodev->func[2]);
1019 sdio_release_host(sdiodev->func[2]);
1020
1021 /* Disable Function 1 */
1022 sdio_claim_host(sdiodev->func[1]);
1023 sdio_disable_func(sdiodev->func[1]);
1024 sdio_release_host(sdiodev->func[1]);
1025
1026 sg_free_table(&sdiodev->sgtable);
1027 sdiodev->sbwad = 0;
1028
1029 pm_runtime_allow(sdiodev->func[1]->card->host->parent);
1030 return 0;
1031 }
1032
1033 static void brcmf_sdiod_host_fixup(struct mmc_host *host)
1034 {
1035 /* runtime-pm powers off the device */
1036 pm_runtime_forbid(host->parent);
1037 /* avoid removal detection upon resume */
1038 host->caps |= MMC_CAP_NONREMOVABLE;
1039 }
1040
1041 static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev)
1042 {
1043 int ret = 0;
1044
1045 sdiodev->num_funcs = 2;
1046
1047 sdio_claim_host(sdiodev->func[1]);
1048
1049 ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
1050 if (ret) {
1051 brcmf_err("Failed to set F1 blocksize\n");
1052 sdio_release_host(sdiodev->func[1]);
1053 goto out;
1054 }
1055 ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
1056 if (ret) {
1057 brcmf_err("Failed to set F2 blocksize\n");
1058 sdio_release_host(sdiodev->func[1]);
1059 goto out;
1060 }
1061
1062 /* increase F2 timeout */
1063 sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY;
1064
1065 /* Enable Function 1 */
1066 ret = sdio_enable_func(sdiodev->func[1]);
1067 sdio_release_host(sdiodev->func[1]);
1068 if (ret) {
1069 brcmf_err("Failed to enable F1: err=%d\n", ret);
1070 goto out;
1071 }
1072
1073 ret = brcmf_sdiod_freezer_attach(sdiodev);
1074 if (ret)
1075 goto out;
1076
1077 /* try to attach to the target device */
1078 sdiodev->bus = brcmf_sdio_probe(sdiodev);
1079 if (!sdiodev->bus) {
1080 ret = -ENODEV;
1081 goto out;
1082 }
1083 brcmf_sdiod_host_fixup(sdiodev->func[2]->card->host);
1084 out:
1085 if (ret)
1086 brcmf_sdiod_remove(sdiodev);
1087
1088 return ret;
1089 }
1090
1091 #define BRCMF_SDIO_DEVICE(dev_id) \
1092 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)}
1093
1094 /* devices we support, null terminated */
1095 static const struct sdio_device_id brcmf_sdmmc_ids[] = {
1096 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143),
1097 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241),
1098 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329),
1099 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330),
1100 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334),
1101 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340),
1102 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341),
1103 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362),
1104 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339),
1105 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4339),
1106 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430),
1107 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345),
1108 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43455),
1109 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354),
1110 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4356),
1111 { /* end: all zeroes */ }
1112 };
1113 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
1114
1115
1116 static void brcmf_sdiod_acpi_set_power_manageable(struct device *dev,
1117 int val)
1118 {
1119 #if IS_ENABLED(CONFIG_ACPI)
1120 struct acpi_device *adev;
1121
1122 adev = ACPI_COMPANION(dev);
1123 if (adev)
1124 adev->flags.power_manageable = 0;
1125 #endif
1126 }
1127
1128 static int brcmf_ops_sdio_probe(struct sdio_func *func,
1129 const struct sdio_device_id *id)
1130 {
1131 int err;
1132 struct brcmf_sdio_dev *sdiodev;
1133 struct brcmf_bus *bus_if;
1134 struct device *dev;
1135
1136 brcmf_dbg(SDIO, "Enter\n");
1137 brcmf_dbg(SDIO, "Class=%x\n", func->class);
1138 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1139 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1140 brcmf_dbg(SDIO, "Function#: %d\n", func->num);
1141
1142 dev = &func->dev;
1143 /* prohibit ACPI power management for this device */
1144 brcmf_sdiod_acpi_set_power_manageable(dev, 0);
1145
1146 /* Consume func num 1 but dont do anything with it. */
1147 if (func->num == 1)
1148 return 0;
1149
1150 /* Ignore anything but func 2 */
1151 if (func->num != 2)
1152 return -ENODEV;
1153
1154 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
1155 if (!bus_if)
1156 return -ENOMEM;
1157 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
1158 if (!sdiodev) {
1159 kfree(bus_if);
1160 return -ENOMEM;
1161 }
1162
1163 /* store refs to functions used. mmc_card does
1164 * not hold the F0 function pointer.
1165 */
1166 sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL);
1167 sdiodev->func[0]->num = 0;
1168 sdiodev->func[1] = func->card->sdio_func[0];
1169 sdiodev->func[2] = func;
1170
1171 sdiodev->bus_if = bus_if;
1172 bus_if->bus_priv.sdio = sdiodev;
1173 bus_if->proto_type = BRCMF_PROTO_BCDC;
1174 dev_set_drvdata(&func->dev, bus_if);
1175 dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
1176 sdiodev->dev = &sdiodev->func[1]->dev;
1177
1178 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN);
1179
1180 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n");
1181 err = brcmf_sdiod_probe(sdiodev);
1182 if (err) {
1183 brcmf_err("F2 error, probe failed %d...\n", err);
1184 goto fail;
1185 }
1186
1187 brcmf_dbg(SDIO, "F2 init completed...\n");
1188 return 0;
1189
1190 fail:
1191 dev_set_drvdata(&func->dev, NULL);
1192 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1193 kfree(sdiodev->func[0]);
1194 kfree(sdiodev);
1195 kfree(bus_if);
1196 return err;
1197 }
1198
1199 static void brcmf_ops_sdio_remove(struct sdio_func *func)
1200 {
1201 struct brcmf_bus *bus_if;
1202 struct brcmf_sdio_dev *sdiodev;
1203
1204 brcmf_dbg(SDIO, "Enter\n");
1205 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1206 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1207 brcmf_dbg(SDIO, "Function: %d\n", func->num);
1208
1209 bus_if = dev_get_drvdata(&func->dev);
1210 if (bus_if) {
1211 sdiodev = bus_if->bus_priv.sdio;
1212
1213 /* start by unregistering irqs */
1214 brcmf_sdiod_intr_unregister(sdiodev);
1215
1216 if (func->num != 1)
1217 return;
1218
1219 /* only proceed with rest of cleanup if func 1 */
1220 brcmf_sdiod_remove(sdiodev);
1221
1222 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1223 dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
1224
1225 kfree(bus_if);
1226 kfree(sdiodev->func[0]);
1227 kfree(sdiodev);
1228 }
1229
1230 brcmf_dbg(SDIO, "Exit\n");
1231 }
1232
1233 void brcmf_sdio_wowl_config(struct device *dev, bool enabled)
1234 {
1235 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1236 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1237
1238 brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled);
1239 sdiodev->wowl_enabled = enabled;
1240 }
1241
1242 #ifdef CONFIG_PM_SLEEP
1243 static int brcmf_ops_sdio_suspend(struct device *dev)
1244 {
1245 struct sdio_func *func;
1246 struct brcmf_bus *bus_if;
1247 struct brcmf_sdio_dev *sdiodev;
1248 mmc_pm_flag_t sdio_flags;
1249
1250 func = container_of(dev, struct sdio_func, dev);
1251 brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1252 if (func->num != SDIO_FUNC_1)
1253 return 0;
1254
1255
1256 bus_if = dev_get_drvdata(dev);
1257 sdiodev = bus_if->bus_priv.sdio;
1258
1259 brcmf_sdiod_freezer_on(sdiodev);
1260 brcmf_sdio_wd_timer(sdiodev->bus, 0);
1261
1262 sdio_flags = MMC_PM_KEEP_POWER;
1263 if (sdiodev->wowl_enabled) {
1264 if (sdiodev->settings->bus.sdio.oob_irq_supported)
1265 enable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr);
1266 else
1267 sdio_flags |= MMC_PM_WAKE_SDIO_IRQ;
1268 }
1269 if (sdio_set_host_pm_flags(sdiodev->func[1], sdio_flags))
1270 brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
1271 return 0;
1272 }
1273
1274 static int brcmf_ops_sdio_resume(struct device *dev)
1275 {
1276 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1277 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1278 struct sdio_func *func = container_of(dev, struct sdio_func, dev);
1279
1280 brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1281 if (func->num != SDIO_FUNC_2)
1282 return 0;
1283
1284 brcmf_sdiod_freezer_off(sdiodev);
1285 return 0;
1286 }
1287
1288 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
1289 .suspend = brcmf_ops_sdio_suspend,
1290 .resume = brcmf_ops_sdio_resume,
1291 };
1292 #endif /* CONFIG_PM_SLEEP */
1293
1294 static struct sdio_driver brcmf_sdmmc_driver = {
1295 .probe = brcmf_ops_sdio_probe,
1296 .remove = brcmf_ops_sdio_remove,
1297 .name = KBUILD_MODNAME,
1298 .id_table = brcmf_sdmmc_ids,
1299 .drv = {
1300 .owner = THIS_MODULE,
1301 #ifdef CONFIG_PM_SLEEP
1302 .pm = &brcmf_sdio_pm_ops,
1303 #endif /* CONFIG_PM_SLEEP */
1304 },
1305 };
1306
1307 void brcmf_sdio_register(void)
1308 {
1309 int ret;
1310
1311 ret = sdio_register_driver(&brcmf_sdmmc_driver);
1312 if (ret)
1313 brcmf_err("sdio_register_driver failed: %d\n", ret);
1314 }
1315
1316 void brcmf_sdio_exit(void)
1317 {
1318 brcmf_dbg(SDIO, "Enter\n");
1319
1320 sdio_unregister_driver(&brcmf_sdmmc_driver);
1321 }
1322
Ubuntu Artful kernel mirror