]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
projects / mirror_ubuntu-bionic-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
[mirror_ubuntu-bionic-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/scatterlist.h>
25 #include <linux/mmc/sdio.h>
26 #include <linux/mmc/core.h>
27 #include <linux/mmc/sdio_func.h>
28 #include <linux/mmc/card.h>
29 #include <linux/mmc/host.h>
30 #include <linux/platform_device.h>
31 #include <linux/platform_data/brcmfmac-sdio.h>
32 #include <linux/pm_runtime.h>
33 #include <linux/suspend.h>
34 #include <linux/errno.h>
35 #include <linux/module.h>
36 #include <linux/acpi.h>
37 #include <net/cfg80211.h>
38
39 #include <defs.h>
40 #include <brcm_hw_ids.h>
41 #include <brcmu_utils.h>
42 #include <brcmu_wifi.h>
43 #include <chipcommon.h>
44 #include <soc.h>
45 #include "chip.h"
46 #include "bus.h"
47 #include "debug.h"
48 #include "sdio.h"
49 #include "of.h"
50 #include "core.h"
51 #include "common.h"
52
53 #define SDIOH_API_ACCESS_RETRY_LIMIT 2
54
55 #define DMA_ALIGN_MASK 0x03
56
57 #define SDIO_FUNC1_BLOCKSIZE 64
58 #define SDIO_FUNC2_BLOCKSIZE 512
59 /* Maximum milliseconds to wait for F2 to come up */
60 #define SDIO_WAIT_F2RDY 3000
61
62 #define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */
63
64 struct brcmf_sdiod_freezer {
65 atomic_t freezing;
66 atomic_t thread_count;
67 u32 frozen_count;
68 wait_queue_head_t thread_freeze;
69 struct completion resumed;
70 };
71
72 static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id)
73 {
74 struct brcmf_bus *bus_if = dev_get_drvdata(dev_id);
75 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
76
77 brcmf_dbg(INTR, "OOB intr triggered\n");
78
79 /* out-of-band interrupt is level-triggered which won't
80 * be cleared until dpc
81 */
82 if (sdiodev->irq_en) {
83 disable_irq_nosync(irq);
84 sdiodev->irq_en = false;
85 }
86
87 brcmf_sdio_isr(sdiodev->bus);
88
89 return IRQ_HANDLED;
90 }
91
92 static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func)
93 {
94 struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev);
95 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
96
97 brcmf_dbg(INTR, "IB intr triggered\n");
98
99 brcmf_sdio_isr(sdiodev->bus);
100 }
101
102 /* dummy handler for SDIO function 2 interrupt */
103 static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func)
104 {
105 }
106
107 int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev)
108 {
109 int ret = 0;
110 u8 data;
111 u32 addr, gpiocontrol;
112 unsigned long flags;
113
114 if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) {
115 brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n",
116 sdiodev->pdata->oob_irq_nr);
117 ret = request_irq(sdiodev->pdata->oob_irq_nr,
118 brcmf_sdiod_oob_irqhandler,
119 sdiodev->pdata->oob_irq_flags,
120 "brcmf_oob_intr",
121 &sdiodev->func[1]->dev);
122 if (ret != 0) {
123 brcmf_err("request_irq failed %d\n", ret);
124 return ret;
125 }
126 sdiodev->oob_irq_requested = true;
127 spin_lock_init(&sdiodev->irq_en_lock);
128 spin_lock_irqsave(&sdiodev->irq_en_lock, flags);
129 sdiodev->irq_en = true;
130 spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags);
131
132 ret = enable_irq_wake(sdiodev->pdata->oob_irq_nr);
133 if (ret != 0) {
134 brcmf_err("enable_irq_wake failed %d\n", ret);
135 return ret;
136 }
137 sdiodev->irq_wake = true;
138
139 sdio_claim_host(sdiodev->func[1]);
140
141 if (sdiodev->bus_if->chip == BRCM_CC_43362_CHIP_ID) {
142 /* assign GPIO to SDIO core */
143 addr = CORE_CC_REG(SI_ENUM_BASE, gpiocontrol);
144 gpiocontrol = brcmf_sdiod_regrl(sdiodev, addr, &ret);
145 gpiocontrol |= 0x2;
146 brcmf_sdiod_regwl(sdiodev, addr, gpiocontrol, &ret);
147
148 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_SELECT, 0xf,
149 &ret);
150 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_OUT, 0, &ret);
151 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_EN, 0x2, &ret);
152 }
153
154 /* must configure SDIO_CCCR_IENx to enable irq */
155 data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret);
156 data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1;
157 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret);
158
159 /* redirect, configure and enable io for interrupt signal */
160 data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE;
161 if (sdiodev->pdata->oob_irq_flags & IRQF_TRIGGER_HIGH)
162 data |= SDIO_SEPINT_ACT_HI;
163 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret);
164
165 sdio_release_host(sdiodev->func[1]);
166 } else {
167 brcmf_dbg(SDIO, "Entering\n");
168 sdio_claim_host(sdiodev->func[1]);
169 sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler);
170 sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler);
171 sdio_release_host(sdiodev->func[1]);
172 }
173
174 return 0;
175 }
176
177 int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
178 {
179 brcmf_dbg(SDIO, "Entering\n");
180
181 if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) {
182 sdio_claim_host(sdiodev->func[1]);
183 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
184 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
185 sdio_release_host(sdiodev->func[1]);
186
187 if (sdiodev->oob_irq_requested) {
188 sdiodev->oob_irq_requested = false;
189 if (sdiodev->irq_wake) {
190 disable_irq_wake(sdiodev->pdata->oob_irq_nr);
191 sdiodev->irq_wake = false;
192 }
193 free_irq(sdiodev->pdata->oob_irq_nr,
194 &sdiodev->func[1]->dev);
195 sdiodev->irq_en = false;
196 }
197 } else {
198 sdio_claim_host(sdiodev->func[1]);
199 sdio_release_irq(sdiodev->func[2]);
200 sdio_release_irq(sdiodev->func[1]);
201 sdio_release_host(sdiodev->func[1]);
202 }
203
204 return 0;
205 }
206
207 void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev,
208 enum brcmf_sdiod_state state)
209 {
210 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM ||
211 state == sdiodev->state)
212 return;
213
214 brcmf_dbg(TRACE, "%d -> %d\n", sdiodev->state, state);
215 switch (sdiodev->state) {
216 case BRCMF_SDIOD_DATA:
217 /* any other state means bus interface is down */
218 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN);
219 break;
220 case BRCMF_SDIOD_DOWN:
221 /* transition from DOWN to DATA means bus interface is up */
222 if (state == BRCMF_SDIOD_DATA)
223 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_UP);
224 break;
225 default:
226 break;
227 }
228 sdiodev->state = state;
229 }
230
231 static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func,
232 uint regaddr, u8 byte)
233 {
234 int err_ret;
235
236 /*
237 * Can only directly write to some F0 registers.
238 * Handle CCCR_IENx and CCCR_ABORT command
239 * as a special case.
240 */
241 if ((regaddr == SDIO_CCCR_ABORT) ||
242 (regaddr == SDIO_CCCR_IENx))
243 sdio_writeb(func, byte, regaddr, &err_ret);
244 else
245 sdio_f0_writeb(func, byte, regaddr, &err_ret);
246
247 return err_ret;
248 }
249
250 static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn,
251 u32 addr, u8 regsz, void *data, bool write)
252 {
253 struct sdio_func *func;
254 int ret;
255
256 brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
257 write, fn, addr, regsz);
258
259 /* only allow byte access on F0 */
260 if (WARN_ON(regsz > 1 && !fn))
261 return -EINVAL;
262 func = sdiodev->func[fn];
263
264 switch (regsz) {
265 case sizeof(u8):
266 if (write) {
267 if (fn)
268 sdio_writeb(func, *(u8 *)data, addr, &ret);
269 else
270 ret = brcmf_sdiod_f0_writeb(func, addr,
271 *(u8 *)data);
272 } else {
273 if (fn)
274 *(u8 *)data = sdio_readb(func, addr, &ret);
275 else
276 *(u8 *)data = sdio_f0_readb(func, addr, &ret);
277 }
278 break;
279 case sizeof(u16):
280 if (write)
281 sdio_writew(func, *(u16 *)data, addr, &ret);
282 else
283 *(u16 *)data = sdio_readw(func, addr, &ret);
284 break;
285 case sizeof(u32):
286 if (write)
287 sdio_writel(func, *(u32 *)data, addr, &ret);
288 else
289 *(u32 *)data = sdio_readl(func, addr, &ret);
290 break;
291 default:
292 brcmf_err("invalid size: %d\n", regsz);
293 break;
294 }
295
296 if (ret)
297 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
298 write ? "write" : "read", fn, addr, ret);
299
300 return ret;
301 }
302
303 static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
304 u8 regsz, void *data, bool write)
305 {
306 u8 func;
307 s32 retry = 0;
308 int ret;
309
310 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
311 return -ENOMEDIUM;
312
313 /*
314 * figure out how to read the register based on address range
315 * 0x00 ~ 0x7FF: function 0 CCCR and FBR
316 * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
317 * The rest: function 1 silicon backplane core registers
318 */
319 if ((addr & ~REG_F0_REG_MASK) == 0)
320 func = SDIO_FUNC_0;
321 else
322 func = SDIO_FUNC_1;
323
324 do {
325 if (!write)
326 memset(data, 0, regsz);
327 /* for retry wait for 1 ms till bus get settled down */
328 if (retry)
329 usleep_range(1000, 2000);
330 ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz,
331 data, write);
332 } while (ret != 0 && ret != -ENOMEDIUM &&
333 retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
334
335 if (ret == -ENOMEDIUM)
336 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
337 else if (ret != 0) {
338 /*
339 * SleepCSR register access can fail when
340 * waking up the device so reduce this noise
341 * in the logs.
342 */
343 if (addr != SBSDIO_FUNC1_SLEEPCSR)
344 brcmf_err("failed to %s data F%d@0x%05x, err: %d\n",
345 write ? "write" : "read", func, addr, ret);
346 else
347 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
348 write ? "write" : "read", func, addr, ret);
349 }
350 return ret;
351 }
352
353 static int
354 brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
355 {
356 int err = 0, i;
357 u8 addr[3];
358
359 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
360 return -ENOMEDIUM;
361
362 addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
363 addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK;
364 addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK;
365
366 for (i = 0; i < 3; i++) {
367 err = brcmf_sdiod_regrw_helper(sdiodev,
368 SBSDIO_FUNC1_SBADDRLOW + i,
369 sizeof(u8), &addr[i], true);
370 if (err) {
371 brcmf_err("failed at addr: 0x%0x\n",
372 SBSDIO_FUNC1_SBADDRLOW + i);
373 break;
374 }
375 }
376
377 return err;
378 }
379
380 static int
381 brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr)
382 {
383 uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
384 int err = 0;
385
386 if (bar0 != sdiodev->sbwad) {
387 err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0);
388 if (err)
389 return err;
390
391 sdiodev->sbwad = bar0;
392 }
393
394 *addr &= SBSDIO_SB_OFT_ADDR_MASK;
395
396 if (width == 4)
397 *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
398
399 return 0;
400 }
401
402 u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
403 {
404 u8 data;
405 int retval;
406
407 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
408 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
409 false);
410 brcmf_dbg(SDIO, "data:0x%02x\n", data);
411
412 if (ret)
413 *ret = retval;
414
415 return data;
416 }
417
418 u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
419 {
420 u32 data;
421 int retval;
422
423 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
424 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
425 if (retval)
426 goto done;
427 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
428 false);
429 brcmf_dbg(SDIO, "data:0x%08x\n", data);
430
431 done:
432 if (ret)
433 *ret = retval;
434
435 return data;
436 }
437
438 void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
439 u8 data, int *ret)
440 {
441 int retval;
442
443 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data);
444 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
445 true);
446 if (ret)
447 *ret = retval;
448 }
449
450 void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
451 u32 data, int *ret)
452 {
453 int retval;
454
455 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data);
456 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
457 if (retval)
458 goto done;
459 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
460 true);
461
462 done:
463 if (ret)
464 *ret = retval;
465 }
466
467 static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn,
468 bool write, u32 addr, struct sk_buff *pkt)
469 {
470 unsigned int req_sz;
471 int err;
472
473 /* Single skb use the standard mmc interface */
474 req_sz = pkt->len + 3;
475 req_sz &= (uint)~3;
476
477 if (write)
478 err = sdio_memcpy_toio(sdiodev->func[fn], addr,
479 ((u8 *)(pkt->data)), req_sz);
480 else if (fn == 1)
481 err = sdio_memcpy_fromio(sdiodev->func[fn], ((u8 *)(pkt->data)),
482 addr, req_sz);
483 else
484 /* function 2 read is FIFO operation */
485 err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr,
486 req_sz);
487 if (err == -ENOMEDIUM)
488 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
489 return err;
490 }
491
492 /**
493 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access
494 * @sdiodev: brcmfmac sdio device
495 * @fn: SDIO function number
496 * @write: direction flag
497 * @addr: dongle memory address as source/destination
498 * @pkt: skb pointer
499 *
500 * This function takes the respbonsibility as the interface function to MMC
501 * stack for block data access. It assumes that the skb passed down by the
502 * caller has already been padded and aligned.
503 */
504 static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn,
505 bool write, u32 addr,
506 struct sk_buff_head *pktlist)
507 {
508 unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset;
509 unsigned int max_req_sz, orig_offset, dst_offset;
510 unsigned short max_seg_cnt, seg_sz;
511 unsigned char *pkt_data, *orig_data, *dst_data;
512 struct sk_buff *pkt_next = NULL, *local_pkt_next;
513 struct sk_buff_head local_list, *target_list;
514 struct mmc_request mmc_req;
515 struct mmc_command mmc_cmd;
516 struct mmc_data mmc_dat;
517 struct scatterlist *sgl;
518 int ret = 0;
519
520 if (!pktlist->qlen)
521 return -EINVAL;
522
523 target_list = pktlist;
524 /* for host with broken sg support, prepare a page aligned list */
525 __skb_queue_head_init(&local_list);
526 if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) {
527 req_sz = 0;
528 skb_queue_walk(pktlist, pkt_next)
529 req_sz += pkt_next->len;
530 req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize);
531 while (req_sz > PAGE_SIZE) {
532 pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE);
533 if (pkt_next == NULL) {
534 ret = -ENOMEM;
535 goto exit;
536 }
537 __skb_queue_tail(&local_list, pkt_next);
538 req_sz -= PAGE_SIZE;
539 }
540 pkt_next = brcmu_pkt_buf_get_skb(req_sz);
541 if (pkt_next == NULL) {
542 ret = -ENOMEM;
543 goto exit;
544 }
545 __skb_queue_tail(&local_list, pkt_next);
546 target_list = &local_list;
547 }
548
549 func_blk_sz = sdiodev->func[fn]->cur_blksize;
550 max_req_sz = sdiodev->max_request_size;
551 max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count,
552 target_list->qlen);
553 seg_sz = target_list->qlen;
554 pkt_offset = 0;
555 pkt_next = target_list->next;
556
557 memset(&mmc_req, 0, sizeof(struct mmc_request));
558 memset(&mmc_cmd, 0, sizeof(struct mmc_command));
559 memset(&mmc_dat, 0, sizeof(struct mmc_data));
560
561 mmc_dat.sg = sdiodev->sgtable.sgl;
562 mmc_dat.blksz = func_blk_sz;
563 mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
564 mmc_cmd.opcode = SD_IO_RW_EXTENDED;
565 mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */
566 mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */
567 mmc_cmd.arg |= 1<<27; /* block mode */
568 /* for function 1 the addr will be incremented */
569 mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0;
570 mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
571 mmc_req.cmd = &mmc_cmd;
572 mmc_req.data = &mmc_dat;
573
574 while (seg_sz) {
575 req_sz = 0;
576 sg_cnt = 0;
577 sgl = sdiodev->sgtable.sgl;
578 /* prep sg table */
579 while (pkt_next != (struct sk_buff *)target_list) {
580 pkt_data = pkt_next->data + pkt_offset;
581 sg_data_sz = pkt_next->len - pkt_offset;
582 if (sg_data_sz > sdiodev->max_segment_size)
583 sg_data_sz = sdiodev->max_segment_size;
584 if (sg_data_sz > max_req_sz - req_sz)
585 sg_data_sz = max_req_sz - req_sz;
586
587 sg_set_buf(sgl, pkt_data, sg_data_sz);
588
589 sg_cnt++;
590 sgl = sg_next(sgl);
591 req_sz += sg_data_sz;
592 pkt_offset += sg_data_sz;
593 if (pkt_offset == pkt_next->len) {
594 pkt_offset = 0;
595 pkt_next = pkt_next->next;
596 }
597
598 if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt)
599 break;
600 }
601 seg_sz -= sg_cnt;
602
603 if (req_sz % func_blk_sz != 0) {
604 brcmf_err("sg request length %u is not %u aligned\n",
605 req_sz, func_blk_sz);
606 ret = -ENOTBLK;
607 goto exit;
608 }
609
610 mmc_dat.sg_len = sg_cnt;
611 mmc_dat.blocks = req_sz / func_blk_sz;
612 mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */
613 mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */
614 /* incrementing addr for function 1 */
615 if (fn == 1)
616 addr += req_sz;
617
618 mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card);
619 mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req);
620
621 ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error;
622 if (ret == -ENOMEDIUM) {
623 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
624 break;
625 } else if (ret != 0) {
626 brcmf_err("CMD53 sg block %s failed %d\n",
627 write ? "write" : "read", ret);
628 ret = -EIO;
629 break;
630 }
631 }
632
633 if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) {
634 local_pkt_next = local_list.next;
635 orig_offset = 0;
636 skb_queue_walk(pktlist, pkt_next) {
637 dst_offset = 0;
638 do {
639 req_sz = local_pkt_next->len - orig_offset;
640 req_sz = min_t(uint, pkt_next->len - dst_offset,
641 req_sz);
642 orig_data = local_pkt_next->data + orig_offset;
643 dst_data = pkt_next->data + dst_offset;
644 memcpy(dst_data, orig_data, req_sz);
645 orig_offset += req_sz;
646 dst_offset += req_sz;
647 if (orig_offset == local_pkt_next->len) {
648 orig_offset = 0;
649 local_pkt_next = local_pkt_next->next;
650 }
651 if (dst_offset == pkt_next->len)
652 break;
653 } while (!skb_queue_empty(&local_list));
654 }
655 }
656
657 exit:
658 sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents);
659 while ((pkt_next = __skb_dequeue(&local_list)) != NULL)
660 brcmu_pkt_buf_free_skb(pkt_next);
661
662 return ret;
663 }
664
665 int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
666 {
667 struct sk_buff *mypkt;
668 int err;
669
670 mypkt = brcmu_pkt_buf_get_skb(nbytes);
671 if (!mypkt) {
672 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
673 nbytes);
674 return -EIO;
675 }
676
677 err = brcmf_sdiod_recv_pkt(sdiodev, mypkt);
678 if (!err)
679 memcpy(buf, mypkt->data, nbytes);
680
681 brcmu_pkt_buf_free_skb(mypkt);
682 return err;
683 }
684
685 int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt)
686 {
687 u32 addr = sdiodev->sbwad;
688 int err = 0;
689
690 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len);
691
692 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
693 if (err)
694 goto done;
695
696 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt);
697
698 done:
699 return err;
700 }
701
702 int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
703 struct sk_buff_head *pktq, uint totlen)
704 {
705 struct sk_buff *glom_skb;
706 struct sk_buff *skb;
707 u32 addr = sdiodev->sbwad;
708 int err = 0;
709
710 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n",
711 addr, pktq->qlen);
712
713 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
714 if (err)
715 goto done;
716
717 if (pktq->qlen == 1)
718 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
719 pktq->next);
720 else if (!sdiodev->sg_support) {
721 glom_skb = brcmu_pkt_buf_get_skb(totlen);
722 if (!glom_skb)
723 return -ENOMEM;
724 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
725 glom_skb);
726 if (err)
727 goto done;
728
729 skb_queue_walk(pktq, skb) {
730 memcpy(skb->data, glom_skb->data, skb->len);
731 skb_pull(glom_skb, skb->len);
732 }
733 } else
734 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr,
735 pktq);
736
737 done:
738 return err;
739 }
740
741 int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
742 {
743 struct sk_buff *mypkt;
744 u32 addr = sdiodev->sbwad;
745 int err;
746
747 mypkt = brcmu_pkt_buf_get_skb(nbytes);
748 if (!mypkt) {
749 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
750 nbytes);
751 return -EIO;
752 }
753
754 memcpy(mypkt->data, buf, nbytes);
755
756 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
757
758 if (!err)
759 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr,
760 mypkt);
761
762 brcmu_pkt_buf_free_skb(mypkt);
763 return err;
764
765 }
766
767 int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
768 struct sk_buff_head *pktq)
769 {
770 struct sk_buff *skb;
771 u32 addr = sdiodev->sbwad;
772 int err;
773
774 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen);
775
776 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
777 if (err)
778 return err;
779
780 if (pktq->qlen == 1 || !sdiodev->sg_support)
781 skb_queue_walk(pktq, skb) {
782 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true,
783 addr, skb);
784 if (err)
785 break;
786 }
787 else
788 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr,
789 pktq);
790
791 return err;
792 }
793
794 int
795 brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
796 u8 *data, uint size)
797 {
798 int bcmerror = 0;
799 struct sk_buff *pkt;
800 u32 sdaddr;
801 uint dsize;
802
803 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
804 pkt = dev_alloc_skb(dsize);
805 if (!pkt) {
806 brcmf_err("dev_alloc_skb failed: len %d\n", dsize);
807 return -EIO;
808 }
809 pkt->priority = 0;
810
811 /* Determine initial transfer parameters */
812 sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK;
813 if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK)
814 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr);
815 else
816 dsize = size;
817
818 sdio_claim_host(sdiodev->func[1]);
819
820 /* Do the transfer(s) */
821 while (size) {
822 /* Set the backplane window to include the start address */
823 bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address);
824 if (bcmerror)
825 break;
826
827 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n",
828 write ? "write" : "read", dsize,
829 sdaddr, address & SBSDIO_SBWINDOW_MASK);
830
831 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK;
832 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
833
834 skb_put(pkt, dsize);
835 if (write)
836 memcpy(pkt->data, data, dsize);
837 bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write,
838 sdaddr, pkt);
839 if (bcmerror) {
840 brcmf_err("membytes transfer failed\n");
841 break;
842 }
843 if (!write)
844 memcpy(data, pkt->data, dsize);
845 skb_trim(pkt, 0);
846
847 /* Adjust for next transfer (if any) */
848 size -= dsize;
849 if (size) {
850 data += dsize;
851 address += dsize;
852 sdaddr = 0;
853 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
854 }
855 }
856
857 dev_kfree_skb(pkt);
858
859 /* Return the window to backplane enumeration space for core access */
860 if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad))
861 brcmf_err("FAILED to set window back to 0x%x\n",
862 sdiodev->sbwad);
863
864 sdio_release_host(sdiodev->func[1]);
865
866 return bcmerror;
867 }
868
869 int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
870 {
871 char t_func = (char)fn;
872 brcmf_dbg(SDIO, "Enter\n");
873
874 /* issue abort cmd52 command through F0 */
875 brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT,
876 sizeof(t_func), &t_func, true);
877
878 brcmf_dbg(SDIO, "Exit\n");
879 return 0;
880 }
881
882 void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev)
883 {
884 struct sdio_func *func;
885 struct mmc_host *host;
886 uint max_blocks;
887 uint nents;
888 int err;
889
890 func = sdiodev->func[2];
891 host = func->card->host;
892 sdiodev->sg_support = host->max_segs > 1;
893 max_blocks = min_t(uint, host->max_blk_count, 511u);
894 sdiodev->max_request_size = min_t(uint, host->max_req_size,
895 max_blocks * func->cur_blksize);
896 sdiodev->max_segment_count = min_t(uint, host->max_segs,
897 SG_MAX_SINGLE_ALLOC);
898 sdiodev->max_segment_size = host->max_seg_size;
899
900 if (!sdiodev->sg_support)
901 return;
902
903 nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE,
904 sdiodev->bus_if->drvr->settings->sdiod_txglomsz);
905 nents += (nents >> 4) + 1;
906
907 WARN_ON(nents > sdiodev->max_segment_count);
908
909 brcmf_dbg(TRACE, "nents=%d\n", nents);
910 err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL);
911 if (err < 0) {
912 brcmf_err("allocation failed: disable scatter-gather");
913 sdiodev->sg_support = false;
914 }
915
916 sdiodev->txglomsz = sdiodev->bus_if->drvr->settings->sdiod_txglomsz;
917 }
918
919 #ifdef CONFIG_PM_SLEEP
920 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev)
921 {
922 sdiodev->freezer = kzalloc(sizeof(*sdiodev->freezer), GFP_KERNEL);
923 if (!sdiodev->freezer)
924 return -ENOMEM;
925 atomic_set(&sdiodev->freezer->thread_count, 0);
926 atomic_set(&sdiodev->freezer->freezing, 0);
927 init_waitqueue_head(&sdiodev->freezer->thread_freeze);
928 init_completion(&sdiodev->freezer->resumed);
929 return 0;
930 }
931
932 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev)
933 {
934 if (sdiodev->freezer) {
935 WARN_ON(atomic_read(&sdiodev->freezer->freezing));
936 kfree(sdiodev->freezer);
937 }
938 }
939
940 static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev *sdiodev)
941 {
942 atomic_t *expect = &sdiodev->freezer->thread_count;
943 int res = 0;
944
945 sdiodev->freezer->frozen_count = 0;
946 reinit_completion(&sdiodev->freezer->resumed);
947 atomic_set(&sdiodev->freezer->freezing, 1);
948 brcmf_sdio_trigger_dpc(sdiodev->bus);
949 wait_event(sdiodev->freezer->thread_freeze,
950 atomic_read(expect) == sdiodev->freezer->frozen_count);
951 sdio_claim_host(sdiodev->func[1]);
952 res = brcmf_sdio_sleep(sdiodev->bus, true);
953 sdio_release_host(sdiodev->func[1]);
954 return res;
955 }
956
957 static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev *sdiodev)
958 {
959 sdio_claim_host(sdiodev->func[1]);
960 brcmf_sdio_sleep(sdiodev->bus, false);
961 sdio_release_host(sdiodev->func[1]);
962 atomic_set(&sdiodev->freezer->freezing, 0);
963 complete_all(&sdiodev->freezer->resumed);
964 }
965
966 bool brcmf_sdiod_freezing(struct brcmf_sdio_dev *sdiodev)
967 {
968 return atomic_read(&sdiodev->freezer->freezing);
969 }
970
971 void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev *sdiodev)
972 {
973 if (!brcmf_sdiod_freezing(sdiodev))
974 return;
975 sdiodev->freezer->frozen_count++;
976 wake_up(&sdiodev->freezer->thread_freeze);
977 wait_for_completion(&sdiodev->freezer->resumed);
978 }
979
980 void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev *sdiodev)
981 {
982 atomic_inc(&sdiodev->freezer->thread_count);
983 }
984
985 void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev *sdiodev)
986 {
987 atomic_dec(&sdiodev->freezer->thread_count);
988 }
989 #else
990 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev)
991 {
992 return 0;
993 }
994
995 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev)
996 {
997 }
998 #endif /* CONFIG_PM_SLEEP */
999
1000 static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev)
1001 {
1002 sdiodev->state = BRCMF_SDIOD_DOWN;
1003 if (sdiodev->bus) {
1004 brcmf_sdio_remove(sdiodev->bus);
1005 sdiodev->bus = NULL;
1006 }
1007
1008 brcmf_sdiod_freezer_detach(sdiodev);
1009
1010 /* Disable Function 2 */
1011 sdio_claim_host(sdiodev->func[2]);
1012 sdio_disable_func(sdiodev->func[2]);
1013 sdio_release_host(sdiodev->func[2]);
1014
1015 /* Disable Function 1 */
1016 sdio_claim_host(sdiodev->func[1]);
1017 sdio_disable_func(sdiodev->func[1]);
1018 sdio_release_host(sdiodev->func[1]);
1019
1020 sg_free_table(&sdiodev->sgtable);
1021 sdiodev->sbwad = 0;
1022
1023 pm_runtime_allow(sdiodev->func[1]->card->host->parent);
1024 return 0;
1025 }
1026
1027 static void brcmf_sdiod_host_fixup(struct mmc_host *host)
1028 {
1029 /* runtime-pm powers off the device */
1030 pm_runtime_forbid(host->parent);
1031 /* avoid removal detection upon resume */
1032 host->caps |= MMC_CAP_NONREMOVABLE;
1033 }
1034
1035 static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev)
1036 {
1037 int ret = 0;
1038
1039 sdiodev->num_funcs = 2;
1040
1041 sdio_claim_host(sdiodev->func[1]);
1042
1043 ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
1044 if (ret) {
1045 brcmf_err("Failed to set F1 blocksize\n");
1046 sdio_release_host(sdiodev->func[1]);
1047 goto out;
1048 }
1049 ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
1050 if (ret) {
1051 brcmf_err("Failed to set F2 blocksize\n");
1052 sdio_release_host(sdiodev->func[1]);
1053 goto out;
1054 }
1055
1056 /* increase F2 timeout */
1057 sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY;
1058
1059 /* Enable Function 1 */
1060 ret = sdio_enable_func(sdiodev->func[1]);
1061 sdio_release_host(sdiodev->func[1]);
1062 if (ret) {
1063 brcmf_err("Failed to enable F1: err=%d\n", ret);
1064 goto out;
1065 }
1066
1067 ret = brcmf_sdiod_freezer_attach(sdiodev);
1068 if (ret)
1069 goto out;
1070
1071 /* try to attach to the target device */
1072 sdiodev->bus = brcmf_sdio_probe(sdiodev);
1073 if (!sdiodev->bus) {
1074 ret = -ENODEV;
1075 goto out;
1076 }
1077 brcmf_sdiod_host_fixup(sdiodev->func[2]->card->host);
1078 out:
1079 if (ret)
1080 brcmf_sdiod_remove(sdiodev);
1081
1082 return ret;
1083 }
1084
1085 #define BRCMF_SDIO_DEVICE(dev_id) \
1086 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)}
1087
1088 /* devices we support, null terminated */
1089 static const struct sdio_device_id brcmf_sdmmc_ids[] = {
1090 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143),
1091 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241),
1092 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329),
1093 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330),
1094 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334),
1095 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340),
1096 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341),
1097 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362),
1098 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339),
1099 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430),
1100 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345),
1101 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354),
1102 { /* end: all zeroes */ }
1103 };
1104 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
1105
1106 static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata;
1107
1108
1109 static void brcmf_sdiod_acpi_set_power_manageable(struct device *dev,
1110 int val)
1111 {
1112 #if IS_ENABLED(CONFIG_ACPI)
1113 struct acpi_device *adev;
1114
1115 adev = ACPI_COMPANION(dev);
1116 if (adev)
1117 adev->flags.power_manageable = 0;
1118 #endif
1119 }
1120
1121 static int brcmf_ops_sdio_probe(struct sdio_func *func,
1122 const struct sdio_device_id *id)
1123 {
1124 int err;
1125 struct brcmf_sdio_dev *sdiodev;
1126 struct brcmf_bus *bus_if;
1127 struct device *dev;
1128
1129 brcmf_dbg(SDIO, "Enter\n");
1130 brcmf_dbg(SDIO, "Class=%x\n", func->class);
1131 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1132 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1133 brcmf_dbg(SDIO, "Function#: %d\n", func->num);
1134
1135 dev = &func->dev;
1136 /* prohibit ACPI power management for this device */
1137 brcmf_sdiod_acpi_set_power_manageable(dev, 0);
1138
1139 /* Consume func num 1 but dont do anything with it. */
1140 if (func->num == 1)
1141 return 0;
1142
1143 /* Ignore anything but func 2 */
1144 if (func->num != 2)
1145 return -ENODEV;
1146
1147 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
1148 if (!bus_if)
1149 return -ENOMEM;
1150 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
1151 if (!sdiodev) {
1152 kfree(bus_if);
1153 return -ENOMEM;
1154 }
1155
1156 /* store refs to functions used. mmc_card does
1157 * not hold the F0 function pointer.
1158 */
1159 sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL);
1160 sdiodev->func[0]->num = 0;
1161 sdiodev->func[1] = func->card->sdio_func[0];
1162 sdiodev->func[2] = func;
1163
1164 sdiodev->bus_if = bus_if;
1165 bus_if->bus_priv.sdio = sdiodev;
1166 bus_if->proto_type = BRCMF_PROTO_BCDC;
1167 dev_set_drvdata(&func->dev, bus_if);
1168 dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
1169 sdiodev->dev = &sdiodev->func[1]->dev;
1170 sdiodev->pdata = brcmfmac_sdio_pdata;
1171
1172 if (!sdiodev->pdata)
1173 brcmf_of_probe(sdiodev);
1174
1175 #ifdef CONFIG_PM_SLEEP
1176 /* wowl can be supported when KEEP_POWER is true and (WAKE_SDIO_IRQ
1177 * is true or when platform data OOB irq is true).
1178 */
1179 if ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_KEEP_POWER) &&
1180 ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_WAKE_SDIO_IRQ) ||
1181 (sdiodev->pdata && sdiodev->pdata->oob_irq_supported)))
1182 bus_if->wowl_supported = true;
1183 #endif
1184
1185 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN);
1186
1187 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n");
1188 err = brcmf_sdiod_probe(sdiodev);
1189 if (err) {
1190 brcmf_err("F2 error, probe failed %d...\n", err);
1191 goto fail;
1192 }
1193
1194 brcmf_dbg(SDIO, "F2 init completed...\n");
1195 return 0;
1196
1197 fail:
1198 dev_set_drvdata(&func->dev, NULL);
1199 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1200 kfree(sdiodev->func[0]);
1201 kfree(sdiodev);
1202 kfree(bus_if);
1203 return err;
1204 }
1205
1206 static void brcmf_ops_sdio_remove(struct sdio_func *func)
1207 {
1208 struct brcmf_bus *bus_if;
1209 struct brcmf_sdio_dev *sdiodev;
1210
1211 brcmf_dbg(SDIO, "Enter\n");
1212 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1213 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1214 brcmf_dbg(SDIO, "Function: %d\n", func->num);
1215
1216 if (func->num != 1)
1217 return;
1218
1219 bus_if = dev_get_drvdata(&func->dev);
1220 if (bus_if) {
1221 sdiodev = bus_if->bus_priv.sdio;
1222 brcmf_sdiod_remove(sdiodev);
1223
1224 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1225 dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
1226
1227 kfree(bus_if);
1228 kfree(sdiodev->func[0]);
1229 kfree(sdiodev);
1230 }
1231
1232 brcmf_dbg(SDIO, "Exit\n");
1233 }
1234
1235 void brcmf_sdio_wowl_config(struct device *dev, bool enabled)
1236 {
1237 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1238 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1239
1240 brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled);
1241 sdiodev->wowl_enabled = enabled;
1242 }
1243
1244 #ifdef CONFIG_PM_SLEEP
1245 static int brcmf_ops_sdio_suspend(struct device *dev)
1246 {
1247 struct sdio_func *func;
1248 struct brcmf_bus *bus_if;
1249 struct brcmf_sdio_dev *sdiodev;
1250 mmc_pm_flag_t sdio_flags;
1251
1252 func = container_of(dev, struct sdio_func, dev);
1253 brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1254 if (func->num != SDIO_FUNC_1)
1255 return 0;
1256
1257
1258 bus_if = dev_get_drvdata(dev);
1259 sdiodev = bus_if->bus_priv.sdio;
1260
1261 brcmf_sdiod_freezer_on(sdiodev);
1262 brcmf_sdio_wd_timer(sdiodev->bus, 0);
1263
1264 sdio_flags = MMC_PM_KEEP_POWER;
1265 if (sdiodev->wowl_enabled) {
1266 if (sdiodev->pdata->oob_irq_supported)
1267 enable_irq_wake(sdiodev->pdata->oob_irq_nr);
1268 else
1269 sdio_flags |= MMC_PM_WAKE_SDIO_IRQ;
1270 }
1271 if (sdio_set_host_pm_flags(sdiodev->func[1], sdio_flags))
1272 brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
1273 return 0;
1274 }
1275
1276 static int brcmf_ops_sdio_resume(struct device *dev)
1277 {
1278 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1279 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1280 struct sdio_func *func = container_of(dev, struct sdio_func, dev);
1281
1282 brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1283 if (func->num != SDIO_FUNC_2)
1284 return 0;
1285
1286 brcmf_sdiod_freezer_off(sdiodev);
1287 return 0;
1288 }
1289
1290 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
1291 .suspend = brcmf_ops_sdio_suspend,
1292 .resume = brcmf_ops_sdio_resume,
1293 };
1294 #endif /* CONFIG_PM_SLEEP */
1295
1296 static struct sdio_driver brcmf_sdmmc_driver = {
1297 .probe = brcmf_ops_sdio_probe,
1298 .remove = brcmf_ops_sdio_remove,
1299 .name = BRCMFMAC_SDIO_PDATA_NAME,
1300 .id_table = brcmf_sdmmc_ids,
1301 .drv = {
1302 .owner = THIS_MODULE,
1303 #ifdef CONFIG_PM_SLEEP
1304 .pm = &brcmf_sdio_pm_ops,
1305 #endif /* CONFIG_PM_SLEEP */
1306 },
1307 };
1308
1309 static int __init brcmf_sdio_pd_probe(struct platform_device *pdev)
1310 {
1311 brcmf_dbg(SDIO, "Enter\n");
1312
1313 brcmfmac_sdio_pdata = dev_get_platdata(&pdev->dev);
1314
1315 if (brcmfmac_sdio_pdata->power_on)
1316 brcmfmac_sdio_pdata->power_on();
1317
1318 return 0;
1319 }
1320
1321 static int brcmf_sdio_pd_remove(struct platform_device *pdev)
1322 {
1323 brcmf_dbg(SDIO, "Enter\n");
1324
1325 if (brcmfmac_sdio_pdata->power_off)
1326 brcmfmac_sdio_pdata->power_off();
1327
1328 sdio_unregister_driver(&brcmf_sdmmc_driver);
1329
1330 return 0;
1331 }
1332
1333 static struct platform_driver brcmf_sdio_pd = {
1334 .remove = brcmf_sdio_pd_remove,
1335 .driver = {
1336 .name = BRCMFMAC_SDIO_PDATA_NAME,
1337 }
1338 };
1339
1340 void brcmf_sdio_register(void)
1341 {
1342 int ret;
1343
1344 ret = sdio_register_driver(&brcmf_sdmmc_driver);
1345 if (ret)
1346 brcmf_err("sdio_register_driver failed: %d\n", ret);
1347 }
1348
1349 void brcmf_sdio_exit(void)
1350 {
1351 brcmf_dbg(SDIO, "Enter\n");
1352
1353 if (brcmfmac_sdio_pdata)
1354 platform_driver_unregister(&brcmf_sdio_pd);
1355 else
1356 sdio_unregister_driver(&brcmf_sdmmc_driver);
1357 }
1358
1359 void __init brcmf_sdio_init(void)
1360 {
1361 int ret;
1362
1363 brcmf_dbg(SDIO, "Enter\n");
1364
1365 ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe);
1366 if (ret == -ENODEV)
1367 brcmf_dbg(SDIO, "No platform data available.\n");
1368 }
ubuntu-bionic-kernel mirror