1 // SPDX-License-Identifier: ISC
2 /*
3 * Copyright (c) 2010 Broadcom Corporation
4 */
5 /* ****************** SDIO CARD Interface Functions **************************/
6
7 #include <linux/types.h>
8 #include <linux/netdevice.h>
9 #include <linux/pci.h>
10 #include <linux/pci_ids.h>
11 #include <linux/sched.h>
12 #include <linux/completion.h>
13 #include <linux/interrupt.h>
14 #include <linux/scatterlist.h>
15 #include <linux/mmc/sdio.h>
16 #include <linux/mmc/core.h>
17 #include <linux/mmc/sdio_func.h>
18 #include <linux/mmc/card.h>
19 #include <linux/mmc/host.h>
20 #include <linux/pm_runtime.h>
21 #include <linux/suspend.h>
22 #include <linux/errno.h>
23 #include <linux/module.h>
24 #include <linux/acpi.h>
25 #include <net/cfg80211.h>
26
27 #include <defs.h>
28 #include <brcm_hw_ids.h>
29 #include <brcmu_utils.h>
30 #include <brcmu_wifi.h>
31 #include <chipcommon.h>
32 #include <soc.h>
33 #include "chip.h"
34 #include "bus.h"
35 #include "debug.h"
36 #include "sdio.h"
37 #include "core.h"
38 #include "common.h"
39
40 #define SDIOH_API_ACCESS_RETRY_LIMIT 2
41
42 #define DMA_ALIGN_MASK 0x03
43
44 #define SDIO_FUNC1_BLOCKSIZE 64
45 #define SDIO_FUNC2_BLOCKSIZE 512
46 #define SDIO_4373_FUNC2_BLOCKSIZE 256
47 #define SDIO_435X_FUNC2_BLOCKSIZE 256
48 #define SDIO_4329_FUNC2_BLOCKSIZE 128
49 /* Maximum milliseconds to wait for F2 to come up */
50 #define SDIO_WAIT_F2RDY 3000
51
52 #define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */
53
54 struct brcmf_sdiod_freezer {
55 atomic_t freezing;
56 atomic_t thread_count;
57 u32 frozen_count;
58 wait_queue_head_t thread_freeze;
59 struct completion resumed;
60 };
61
brcmf_sdiod_oob_irqhandler(int irq,void * dev_id)62 static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id)
63 {
64 struct brcmf_bus *bus_if = dev_get_drvdata(dev_id);
65 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
66
67 brcmf_dbg(INTR, "OOB intr triggered\n");
68
69 /* out-of-band interrupt is level-triggered which won't
70 * be cleared until dpc
71 */
72 if (sdiodev->irq_en) {
73 disable_irq_nosync(irq);
74 sdiodev->irq_en = false;
75 }
76
77 brcmf_sdio_isr(sdiodev->bus, true);
78
79 return IRQ_HANDLED;
80 }
81
brcmf_sdiod_ib_irqhandler(struct sdio_func * func)82 static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func)
83 {
84 struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev);
85 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
86
87 brcmf_dbg(INTR, "IB intr triggered\n");
88
89 brcmf_sdio_isr(sdiodev->bus, false);
90 }
91
92 /* dummy handler for SDIO function 2 interrupt */
brcmf_sdiod_dummy_irqhandler(struct sdio_func * func)93 static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func)
94 {
95 }
96
brcmf_sdiod_intr_register(struct brcmf_sdio_dev * sdiodev)97 int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev)
98 {
99 struct brcmfmac_sdio_pd *pdata;
100 int ret = 0;
101 u8 data;
102 u32 addr, gpiocontrol;
103
104 pdata = &sdiodev->settings->bus.sdio;
105 if (pdata->oob_irq_supported) {
106 brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n",
107 pdata->oob_irq_nr);
108 spin_lock_init(&sdiodev->irq_en_lock);
109 sdiodev->irq_en = true;
110
111 ret = request_irq(pdata->oob_irq_nr, brcmf_sdiod_oob_irqhandler,
112 pdata->oob_irq_flags, "brcmf_oob_intr",
113 &sdiodev->func1->dev);
114 if (ret != 0) {
115 brcmf_err("request_irq failed %d\n", ret);
116 return ret;
117 }
118 sdiodev->oob_irq_requested = true;
119
120 ret = enable_irq_wake(pdata->oob_irq_nr);
121 if (ret != 0) {
122 brcmf_err("enable_irq_wake failed %d\n", ret);
123 return ret;
124 }
125 disable_irq_wake(pdata->oob_irq_nr);
126
127 sdio_claim_host(sdiodev->func1);
128
129 if (sdiodev->bus_if->chip == BRCM_CC_43362_CHIP_ID) {
130 /* assign GPIO to SDIO core */
131 addr = brcmf_chip_enum_base(sdiodev->func1->device);
132 addr = CORE_CC_REG(addr, gpiocontrol);
133 gpiocontrol = brcmf_sdiod_readl(sdiodev, addr, &ret);
134 gpiocontrol |= 0x2;
135 brcmf_sdiod_writel(sdiodev, addr, gpiocontrol, &ret);
136
137 brcmf_sdiod_writeb(sdiodev, SBSDIO_GPIO_SELECT,
138 0xf, &ret);
139 brcmf_sdiod_writeb(sdiodev, SBSDIO_GPIO_OUT, 0, &ret);
140 brcmf_sdiod_writeb(sdiodev, SBSDIO_GPIO_EN, 0x2, &ret);
141 }
142
143 /* must configure SDIO_CCCR_IENx to enable irq */
144 data = brcmf_sdiod_func0_rb(sdiodev, SDIO_CCCR_IENx, &ret);
145 data |= SDIO_CCCR_IEN_FUNC1 | SDIO_CCCR_IEN_FUNC2 |
146 SDIO_CCCR_IEN_FUNC0;
147 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_IENx, data, &ret);
148
149 /* redirect, configure and enable io for interrupt signal */
150 data = SDIO_CCCR_BRCM_SEPINT_MASK | SDIO_CCCR_BRCM_SEPINT_OE;
151 if (pdata->oob_irq_flags & IRQF_TRIGGER_HIGH)
152 data |= SDIO_CCCR_BRCM_SEPINT_ACT_HI;
153 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_BRCM_SEPINT,
154 data, &ret);
155 sdio_release_host(sdiodev->func1);
156 } else {
157 brcmf_dbg(SDIO, "Entering\n");
158 sdio_claim_host(sdiodev->func1);
159 sdio_claim_irq(sdiodev->func1, brcmf_sdiod_ib_irqhandler);
160 sdio_claim_irq(sdiodev->func2, brcmf_sdiod_dummy_irqhandler);
161 sdio_release_host(sdiodev->func1);
162 sdiodev->sd_irq_requested = true;
163 }
164
165 return 0;
166 }
167
brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev * sdiodev)168 void brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
169 {
170
171 brcmf_dbg(SDIO, "Entering oob=%d sd=%d\n",
172 sdiodev->oob_irq_requested,
173 sdiodev->sd_irq_requested);
174
175 if (sdiodev->oob_irq_requested) {
176 struct brcmfmac_sdio_pd *pdata;
177
178 pdata = &sdiodev->settings->bus.sdio;
179 sdio_claim_host(sdiodev->func1);
180 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
181 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
182 sdio_release_host(sdiodev->func1);
183
184 sdiodev->oob_irq_requested = false;
185 free_irq(pdata->oob_irq_nr, &sdiodev->func1->dev);
186 sdiodev->irq_en = false;
187 sdiodev->oob_irq_requested = false;
188 }
189
190 if (sdiodev->sd_irq_requested) {
191 sdio_claim_host(sdiodev->func1);
192 sdio_release_irq(sdiodev->func2);
193 sdio_release_irq(sdiodev->func1);
194 sdio_release_host(sdiodev->func1);
195 sdiodev->sd_irq_requested = false;
196 }
197 }
198
brcmf_sdiod_change_state(struct brcmf_sdio_dev * sdiodev,enum brcmf_sdiod_state state)199 void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev,
200 enum brcmf_sdiod_state state)
201 {
202 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM ||
203 state == sdiodev->state)
204 return;
205
206 brcmf_dbg(TRACE, "%d -> %d\n", sdiodev->state, state);
207 switch (sdiodev->state) {
208 case BRCMF_SDIOD_DATA:
209 /* any other state means bus interface is down */
210 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN);
211 break;
212 case BRCMF_SDIOD_DOWN:
213 /* transition from DOWN to DATA means bus interface is up */
214 if (state == BRCMF_SDIOD_DATA)
215 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_UP);
216 break;
217 default:
218 break;
219 }
220 sdiodev->state = state;
221 }
222
brcmf_sdiod_set_backplane_window(struct brcmf_sdio_dev * sdiodev,u32 addr)223 static int brcmf_sdiod_set_backplane_window(struct brcmf_sdio_dev *sdiodev,
224 u32 addr)
225 {
226 u32 v, bar0 = addr & SBSDIO_SBWINDOW_MASK;
227 int err = 0, i;
228
229 if (bar0 == sdiodev->sbwad)
230 return 0;
231
232 v = bar0 >> 8;
233
234 for (i = 0 ; i < 3 && !err ; i++, v >>= 8)
235 brcmf_sdiod_writeb(sdiodev, SBSDIO_FUNC1_SBADDRLOW + i,
236 v & 0xff, &err);
237
238 if (!err)
239 sdiodev->sbwad = bar0;
240
241 return err;
242 }
243
brcmf_sdiod_readl(struct brcmf_sdio_dev * sdiodev,u32 addr,int * ret)244 u32 brcmf_sdiod_readl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
245 {
246 u32 data = 0;
247 int retval;
248
249 retval = brcmf_sdiod_set_backplane_window(sdiodev, addr);
250 if (retval)
251 goto out;
252
253 addr &= SBSDIO_SB_OFT_ADDR_MASK;
254 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
255
256 data = sdio_readl(sdiodev->func1, addr, &retval);
257
258 out:
259 if (ret)
260 *ret = retval;
261
262 return data;
263 }
264
brcmf_sdiod_writel(struct brcmf_sdio_dev * sdiodev,u32 addr,u32 data,int * ret)265 void brcmf_sdiod_writel(struct brcmf_sdio_dev *sdiodev, u32 addr,
266 u32 data, int *ret)
267 {
268 int retval;
269
270 retval = brcmf_sdiod_set_backplane_window(sdiodev, addr);
271 if (retval)
272 goto out;
273
274 addr &= SBSDIO_SB_OFT_ADDR_MASK;
275 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
276
277 sdio_writel(sdiodev->func1, data, addr, &retval);
278
279 out:
280 if (ret)
281 *ret = retval;
282 }
283
brcmf_sdiod_skbuff_read(struct brcmf_sdio_dev * sdiodev,struct sdio_func * func,u32 addr,struct sk_buff * skb)284 static int brcmf_sdiod_skbuff_read(struct brcmf_sdio_dev *sdiodev,
285 struct sdio_func *func, u32 addr,
286 struct sk_buff *skb)
287 {
288 unsigned int req_sz;
289 int err;
290
291 /* Single skb use the standard mmc interface */
292 req_sz = skb->len + 3;
293 req_sz &= (uint)~3;
294
295 switch (func->num) {
296 case 1:
297 err = sdio_memcpy_fromio(func, ((u8 *)(skb->data)), addr,
298 req_sz);
299 break;
300 case 2:
301 err = sdio_readsb(func, ((u8 *)(skb->data)), addr, req_sz);
302 break;
303 default:
304 /* bail out as things are really fishy here */
305 WARN(1, "invalid sdio function number: %d\n", func->num);
306 err = -ENOMEDIUM;
307 }
308
309 if (err == -ENOMEDIUM)
310 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
311
312 return err;
313 }
314
brcmf_sdiod_skbuff_write(struct brcmf_sdio_dev * sdiodev,struct sdio_func * func,u32 addr,struct sk_buff * skb)315 static int brcmf_sdiod_skbuff_write(struct brcmf_sdio_dev *sdiodev,
316 struct sdio_func *func, u32 addr,
317 struct sk_buff *skb)
318 {
319 unsigned int req_sz;
320 int err;
321
322 /* Single skb use the standard mmc interface */
323 req_sz = skb->len + 3;
324 req_sz &= (uint)~3;
325
326 err = sdio_memcpy_toio(func, addr, ((u8 *)(skb->data)), req_sz);
327
328 if (err == -ENOMEDIUM)
329 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
330
331 return err;
332 }
333
mmc_submit_one(struct mmc_data * md,struct mmc_request * mr,struct mmc_command * mc,int sg_cnt,int req_sz,int func_blk_sz,u32 * addr,struct brcmf_sdio_dev * sdiodev,struct sdio_func * func,int write)334 static int mmc_submit_one(struct mmc_data *md, struct mmc_request *mr,
335 struct mmc_command *mc, int sg_cnt, int req_sz,
336 int func_blk_sz, u32 *addr,
337 struct brcmf_sdio_dev *sdiodev,
338 struct sdio_func *func, int write)
339 {
340 int ret;
341
342 md->sg_len = sg_cnt;
343 md->blocks = req_sz / func_blk_sz;
344 mc->arg |= (*addr & 0x1FFFF) << 9; /* address */
345 mc->arg |= md->blocks & 0x1FF; /* block count */
346 /* incrementing addr for function 1 */
347 if (func->num == 1)
348 *addr += req_sz;
349
350 mmc_set_data_timeout(md, func->card);
351 mmc_wait_for_req(func->card->host, mr);
352
353 ret = mc->error ? mc->error : md->error;
354 if (ret == -ENOMEDIUM) {
355 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
356 } else if (ret != 0) {
357 brcmf_err("CMD53 sg block %s failed %d\n",
358 write ? "write" : "read", ret);
359 ret = -EIO;
360 }
361
362 return ret;
363 }
364
365 /**
366 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access
367 * @sdiodev: brcmfmac sdio device
368 * @func: SDIO function
369 * @write: direction flag
370 * @addr: dongle memory address as source/destination
371 * @pktlist: skb buffer head pointer
372 *
373 * This function takes the respbonsibility as the interface function to MMC
374 * stack for block data access. It assumes that the skb passed down by the
375 * caller has already been padded and aligned.
376 */
brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev * sdiodev,struct sdio_func * func,bool write,u32 addr,struct sk_buff_head * pktlist)377 static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev,
378 struct sdio_func *func,
379 bool write, u32 addr,
380 struct sk_buff_head *pktlist)
381 {
382 unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset;
383 unsigned int max_req_sz, src_offset, dst_offset;
384 unsigned char *pkt_data, *orig_data, *dst_data;
385 struct sk_buff_head local_list, *target_list;
386 struct sk_buff *pkt_next = NULL, *src;
387 unsigned short max_seg_cnt;
388 struct mmc_request mmc_req;
389 struct mmc_command mmc_cmd;
390 struct mmc_data mmc_dat;
391 struct scatterlist *sgl;
392 int ret = 0;
393
394 if (!pktlist->qlen)
395 return -EINVAL;
396
397 target_list = pktlist;
398 /* for host with broken sg support, prepare a page aligned list */
399 __skb_queue_head_init(&local_list);
400 if (!write && sdiodev->settings->bus.sdio.broken_sg_support) {
401 req_sz = 0;
402 skb_queue_walk(pktlist, pkt_next)
403 req_sz += pkt_next->len;
404 req_sz = ALIGN(req_sz, func->cur_blksize);
405 while (req_sz > PAGE_SIZE) {
406 pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE);
407 if (pkt_next == NULL) {
408 ret = -ENOMEM;
409 goto exit;
410 }
411 __skb_queue_tail(&local_list, pkt_next);
412 req_sz -= PAGE_SIZE;
413 }
414 pkt_next = brcmu_pkt_buf_get_skb(req_sz);
415 if (pkt_next == NULL) {
416 ret = -ENOMEM;
417 goto exit;
418 }
419 __skb_queue_tail(&local_list, pkt_next);
420 target_list = &local_list;
421 }
422
423 func_blk_sz = func->cur_blksize;
424 max_req_sz = sdiodev->max_request_size;
425 max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count,
426 target_list->qlen);
427
428 memset(&mmc_req, 0, sizeof(struct mmc_request));
429 memset(&mmc_cmd, 0, sizeof(struct mmc_command));
430 memset(&mmc_dat, 0, sizeof(struct mmc_data));
431
432 mmc_dat.sg = sdiodev->sgtable.sgl;
433 mmc_dat.blksz = func_blk_sz;
434 mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
435 mmc_cmd.opcode = SD_IO_RW_EXTENDED;
436 mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */
437 mmc_cmd.arg |= (func->num & 0x7) << 28; /* SDIO func num */
438 mmc_cmd.arg |= 1 << 27; /* block mode */
439 /* for function 1 the addr will be incremented */
440 mmc_cmd.arg |= (func->num == 1) ? 1 << 26 : 0;
441 mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
442 mmc_req.cmd = &mmc_cmd;
443 mmc_req.data = &mmc_dat;
444
445 req_sz = 0;
446 sg_cnt = 0;
447 sgl = sdiodev->sgtable.sgl;
448 skb_queue_walk(target_list, pkt_next) {
449 pkt_offset = 0;
450 while (pkt_offset < pkt_next->len) {
451 pkt_data = pkt_next->data + pkt_offset;
452 sg_data_sz = pkt_next->len - pkt_offset;
453 if (sg_data_sz > sdiodev->max_segment_size)
454 sg_data_sz = sdiodev->max_segment_size;
455 if (sg_data_sz > max_req_sz - req_sz)
456 sg_data_sz = max_req_sz - req_sz;
457
458 if (!sgl) {
459 /* out of (pre-allocated) scatterlist entries */
460 ret = -ENOMEM;
461 goto exit;
462 }
463 sg_set_buf(sgl, pkt_data, sg_data_sz);
464 sg_cnt++;
465
466 sgl = sg_next(sgl);
467 req_sz += sg_data_sz;
468 pkt_offset += sg_data_sz;
469 if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt) {
470 ret = mmc_submit_one(&mmc_dat, &mmc_req, &mmc_cmd,
471 sg_cnt, req_sz, func_blk_sz,
472 &addr, sdiodev, func, write);
473 if (ret)
474 goto exit_queue_walk;
475 req_sz = 0;
476 sg_cnt = 0;
477 sgl = sdiodev->sgtable.sgl;
478 }
479 }
480 }
481 if (sg_cnt)
482 ret = mmc_submit_one(&mmc_dat, &mmc_req, &mmc_cmd,
483 sg_cnt, req_sz, func_blk_sz,
484 &addr, sdiodev, func, write);
485 exit_queue_walk:
486 if (!write && sdiodev->settings->bus.sdio.broken_sg_support) {
487 src = __skb_peek(&local_list);
488 src_offset = 0;
489 skb_queue_walk(pktlist, pkt_next) {
490 dst_offset = 0;
491
492 /* This is safe because we must have enough SKB data
493 * in the local list to cover everything in pktlist.
494 */
495 while (1) {
496 req_sz = pkt_next->len - dst_offset;
497 if (req_sz > src->len - src_offset)
498 req_sz = src->len - src_offset;
499
500 orig_data = src->data + src_offset;
501 dst_data = pkt_next->data + dst_offset;
502 memcpy(dst_data, orig_data, req_sz);
503
504 src_offset += req_sz;
505 if (src_offset == src->len) {
506 src_offset = 0;
507 src = skb_peek_next(src, &local_list);
508 }
509 dst_offset += req_sz;
510 if (dst_offset == pkt_next->len)
511 break;
512 }
513 }
514 }
515
516 exit:
517 sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents);
518 while ((pkt_next = __skb_dequeue(&local_list)) != NULL)
519 brcmu_pkt_buf_free_skb(pkt_next);
520
521 return ret;
522 }
523
brcmf_sdiod_recv_buf(struct brcmf_sdio_dev * sdiodev,u8 * buf,uint nbytes)524 int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
525 {
526 struct sk_buff *mypkt;
527 int err;
528
529 mypkt = brcmu_pkt_buf_get_skb(nbytes);
530 if (!mypkt) {
531 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
532 nbytes);
533 return -EIO;
534 }
535
536 err = brcmf_sdiod_recv_pkt(sdiodev, mypkt);
537 if (!err)
538 memcpy(buf, mypkt->data, nbytes);
539
540 brcmu_pkt_buf_free_skb(mypkt);
541 return err;
542 }
543
brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev * sdiodev,struct sk_buff * pkt)544 int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt)
545 {
546 u32 addr = sdiodev->cc_core->base;
547 int err = 0;
548
549 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len);
550
551 err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
552 if (err)
553 goto done;
554
555 addr &= SBSDIO_SB_OFT_ADDR_MASK;
556 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
557
558 err = brcmf_sdiod_skbuff_read(sdiodev, sdiodev->func2, addr, pkt);
559
560 done:
561 return err;
562 }
563
brcmf_sdiod_recv_chain(struct brcmf_sdio_dev * sdiodev,struct sk_buff_head * pktq,uint totlen)564 int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
565 struct sk_buff_head *pktq, uint totlen)
566 {
567 struct sk_buff *glom_skb = NULL;
568 struct sk_buff *skb;
569 u32 addr = sdiodev->cc_core->base;
570 int err = 0;
571
572 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n",
573 addr, pktq->qlen);
574
575 err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
576 if (err)
577 goto done;
578
579 addr &= SBSDIO_SB_OFT_ADDR_MASK;
580 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
581
582 if (pktq->qlen == 1)
583 err = brcmf_sdiod_skbuff_read(sdiodev, sdiodev->func2, addr,
584 __skb_peek(pktq));
585 else if (!sdiodev->sg_support) {
586 glom_skb = brcmu_pkt_buf_get_skb(totlen);
587 if (!glom_skb)
588 return -ENOMEM;
589 err = brcmf_sdiod_skbuff_read(sdiodev, sdiodev->func2, addr,
590 glom_skb);
591 if (err)
592 goto done;
593
594 skb_queue_walk(pktq, skb) {
595 memcpy(skb->data, glom_skb->data, skb->len);
596 skb_pull(glom_skb, skb->len);
597 }
598 } else
599 err = brcmf_sdiod_sglist_rw(sdiodev, sdiodev->func2, false,
600 addr, pktq);
601
602 done:
603 brcmu_pkt_buf_free_skb(glom_skb);
604 return err;
605 }
606
brcmf_sdiod_send_buf(struct brcmf_sdio_dev * sdiodev,u8 * buf,uint nbytes)607 int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
608 {
609 struct sk_buff *mypkt;
610 u32 addr = sdiodev->cc_core->base;
611 int err;
612
613 mypkt = brcmu_pkt_buf_get_skb(nbytes);
614
615 if (!mypkt) {
616 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
617 nbytes);
618 return -EIO;
619 }
620
621 memcpy(mypkt->data, buf, nbytes);
622
623 err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
624 if (err)
625 goto out;
626
627 addr &= SBSDIO_SB_OFT_ADDR_MASK;
628 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
629
630 err = brcmf_sdiod_skbuff_write(sdiodev, sdiodev->func2, addr, mypkt);
631 out:
632 brcmu_pkt_buf_free_skb(mypkt);
633
634 return err;
635 }
636
brcmf_sdiod_send_pkt(struct brcmf_sdio_dev * sdiodev,struct sk_buff_head * pktq)637 int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
638 struct sk_buff_head *pktq)
639 {
640 struct sk_buff *skb;
641 u32 addr = sdiodev->cc_core->base;
642 int err;
643
644 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen);
645
646 err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
647 if (err)
648 return err;
649
650 addr &= SBSDIO_SB_OFT_ADDR_MASK;
651 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
652
653 if (pktq->qlen == 1 || !sdiodev->sg_support) {
654 skb_queue_walk(pktq, skb) {
655 err = brcmf_sdiod_skbuff_write(sdiodev, sdiodev->func2,
656 addr, skb);
657 if (err)
658 break;
659 }
660 } else {
661 err = brcmf_sdiod_sglist_rw(sdiodev, sdiodev->func2, true,
662 addr, pktq);
663 }
664
665 return err;
666 }
667
668 int
brcmf_sdiod_ramrw(struct brcmf_sdio_dev * sdiodev,bool write,u32 address,u8 * data,uint size)669 brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
670 u8 *data, uint size)
671 {
672 int err = 0;
673 struct sk_buff *pkt;
674 u32 sdaddr;
675 uint dsize;
676
677 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
678 pkt = dev_alloc_skb(dsize);
679 if (!pkt) {
680 brcmf_err("dev_alloc_skb failed: len %d\n", dsize);
681 return -EIO;
682 }
683 pkt->priority = 0;
684
685 /* Determine initial transfer parameters */
686 sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK;
687 if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK)
688 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr);
689 else
690 dsize = size;
691
692 sdio_claim_host(sdiodev->func1);
693
694 /* Do the transfer(s) */
695 while (size) {
696 /* Set the backplane window to include the start address */
697 err = brcmf_sdiod_set_backplane_window(sdiodev, address);
698 if (err)
699 break;
700
701 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n",
702 write ? "write" : "read", dsize,
703 sdaddr, address & SBSDIO_SBWINDOW_MASK);
704
705 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK;
706 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
707
708 skb_put(pkt, dsize);
709
710 if (write) {
711 memcpy(pkt->data, data, dsize);
712 err = brcmf_sdiod_skbuff_write(sdiodev, sdiodev->func1,
713 sdaddr, pkt);
714 } else {
715 err = brcmf_sdiod_skbuff_read(sdiodev, sdiodev->func1,
716 sdaddr, pkt);
717 }
718
719 if (err) {
720 brcmf_err("membytes transfer failed\n");
721 break;
722 }
723 if (!write)
724 memcpy(data, pkt->data, dsize);
725 skb_trim(pkt, 0);
726
727 /* Adjust for next transfer (if any) */
728 size -= dsize;
729 if (size) {
730 data += dsize;
731 address += dsize;
732 sdaddr = 0;
733 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
734 }
735 }
736
737 dev_kfree_skb(pkt);
738
739 sdio_release_host(sdiodev->func1);
740
741 return err;
742 }
743
brcmf_sdiod_abort(struct brcmf_sdio_dev * sdiodev,struct sdio_func * func)744 int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, struct sdio_func *func)
745 {
746 brcmf_dbg(SDIO, "Enter\n");
747
748 /* Issue abort cmd52 command through F0 */
749 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_ABORT, func->num, NULL);
750
751 brcmf_dbg(SDIO, "Exit\n");
752 return 0;
753 }
754
brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev * sdiodev)755 void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev)
756 {
757 struct sdio_func *func;
758 struct mmc_host *host;
759 uint max_blocks;
760 uint nents;
761 int err;
762
763 func = sdiodev->func2;
764 host = func->card->host;
765 sdiodev->sg_support = host->max_segs > 1;
766 max_blocks = min_t(uint, host->max_blk_count, 511u);
767 sdiodev->max_request_size = min_t(uint, host->max_req_size,
768 max_blocks * func->cur_blksize);
769 sdiodev->max_segment_count = min_t(uint, host->max_segs,
770 SG_MAX_SINGLE_ALLOC);
771 sdiodev->max_segment_size = host->max_seg_size;
772
773 if (!sdiodev->sg_support)
774 return;
775
776 nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE,
777 sdiodev->settings->bus.sdio.txglomsz);
778 nents *= 2;
779
780 WARN_ON(nents > sdiodev->max_segment_count);
781
782 brcmf_dbg(TRACE, "nents=%d\n", nents);
783 err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL);
784 if (err < 0) {
785 brcmf_err("allocation failed: disable scatter-gather");
786 sdiodev->sg_support = false;
787 }
788
789 sdiodev->txglomsz = sdiodev->settings->bus.sdio.txglomsz;
790 }
791
brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev * sdiodev)792 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev)
793 {
794 if (!IS_ENABLED(CONFIG_PM_SLEEP))
795 return 0;
796
797 sdiodev->freezer = kzalloc(sizeof(*sdiodev->freezer), GFP_KERNEL);
798 if (!sdiodev->freezer)
799 return -ENOMEM;
800 atomic_set(&sdiodev->freezer->thread_count, 0);
801 atomic_set(&sdiodev->freezer->freezing, 0);
802 init_waitqueue_head(&sdiodev->freezer->thread_freeze);
803 init_completion(&sdiodev->freezer->resumed);
804 return 0;
805 }
806
brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev * sdiodev)807 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev)
808 {
809 if (sdiodev->freezer) {
810 WARN_ON(atomic_read(&sdiodev->freezer->freezing));
811 kfree(sdiodev->freezer);
812 sdiodev->freezer = NULL;
813 }
814 }
815
brcmf_sdiod_freezer_on(struct brcmf_sdio_dev * sdiodev)816 static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev *sdiodev)
817 {
818 atomic_t *expect = &sdiodev->freezer->thread_count;
819 int res = 0;
820
821 sdiodev->freezer->frozen_count = 0;
822 reinit_completion(&sdiodev->freezer->resumed);
823 atomic_set(&sdiodev->freezer->freezing, 1);
824 brcmf_sdio_trigger_dpc(sdiodev->bus);
825 wait_event(sdiodev->freezer->thread_freeze,
826 atomic_read(expect) == sdiodev->freezer->frozen_count);
827 sdio_claim_host(sdiodev->func1);
828 res = brcmf_sdio_sleep(sdiodev->bus, true);
829 sdio_release_host(sdiodev->func1);
830 return res;
831 }
832
brcmf_sdiod_freezer_off(struct brcmf_sdio_dev * sdiodev)833 static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev *sdiodev)
834 {
835 sdio_claim_host(sdiodev->func1);
836 brcmf_sdio_sleep(sdiodev->bus, false);
837 sdio_release_host(sdiodev->func1);
838 atomic_set(&sdiodev->freezer->freezing, 0);
839 complete_all(&sdiodev->freezer->resumed);
840 }
841
brcmf_sdiod_freezing(struct brcmf_sdio_dev * sdiodev)842 bool brcmf_sdiod_freezing(struct brcmf_sdio_dev *sdiodev)
843 {
844 return IS_ENABLED(CONFIG_PM_SLEEP) &&
845 atomic_read(&sdiodev->freezer->freezing);
846 }
847
brcmf_sdiod_try_freeze(struct brcmf_sdio_dev * sdiodev)848 void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev *sdiodev)
849 {
850 if (!brcmf_sdiod_freezing(sdiodev))
851 return;
852 sdiodev->freezer->frozen_count++;
853 wake_up(&sdiodev->freezer->thread_freeze);
854 wait_for_completion(&sdiodev->freezer->resumed);
855 }
856
brcmf_sdiod_freezer_count(struct brcmf_sdio_dev * sdiodev)857 void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev *sdiodev)
858 {
859 if (IS_ENABLED(CONFIG_PM_SLEEP))
860 atomic_inc(&sdiodev->freezer->thread_count);
861 }
862
brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev * sdiodev)863 void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev *sdiodev)
864 {
865 if (IS_ENABLED(CONFIG_PM_SLEEP))
866 atomic_dec(&sdiodev->freezer->thread_count);
867 }
868
brcmf_sdiod_remove(struct brcmf_sdio_dev * sdiodev)869 int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev)
870 {
871 sdiodev->state = BRCMF_SDIOD_DOWN;
872 if (sdiodev->bus) {
873 brcmf_sdio_remove(sdiodev->bus);
874 sdiodev->bus = NULL;
875 }
876
877 brcmf_sdiod_freezer_detach(sdiodev);
878
879 /* Disable functions 2 then 1. */
880 sdio_claim_host(sdiodev->func1);
881 sdio_disable_func(sdiodev->func2);
882 sdio_disable_func(sdiodev->func1);
883 sdio_release_host(sdiodev->func1);
884
885 sg_free_table(&sdiodev->sgtable);
886 sdiodev->sbwad = 0;
887
888 pm_runtime_allow(sdiodev->func1->card->host->parent);
889 return 0;
890 }
891
brcmf_sdiod_host_fixup(struct mmc_host * host)892 static void brcmf_sdiod_host_fixup(struct mmc_host *host)
893 {
894 /* runtime-pm powers off the device */
895 pm_runtime_forbid(host->parent);
896 /* avoid removal detection upon resume */
897 host->caps |= MMC_CAP_NONREMOVABLE;
898 }
899
brcmf_sdiod_probe(struct brcmf_sdio_dev * sdiodev)900 int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev)
901 {
902 int ret = 0;
903 unsigned int f2_blksz = SDIO_FUNC2_BLOCKSIZE;
904
905 sdio_claim_host(sdiodev->func1);
906
907 ret = sdio_set_block_size(sdiodev->func1, SDIO_FUNC1_BLOCKSIZE);
908 if (ret) {
909 brcmf_err("Failed to set F1 blocksize\n");
910 sdio_release_host(sdiodev->func1);
911 return ret;
912 }
913 switch (sdiodev->func2->device) {
914 case SDIO_DEVICE_ID_BROADCOM_CYPRESS_4373:
915 f2_blksz = SDIO_4373_FUNC2_BLOCKSIZE;
916 break;
917 case SDIO_DEVICE_ID_BROADCOM_4359:
918 case SDIO_DEVICE_ID_BROADCOM_4354:
919 case SDIO_DEVICE_ID_BROADCOM_4356:
920 f2_blksz = SDIO_435X_FUNC2_BLOCKSIZE;
921 break;
922 case SDIO_DEVICE_ID_BROADCOM_4329:
923 f2_blksz = SDIO_4329_FUNC2_BLOCKSIZE;
924 break;
925 default:
926 break;
927 }
928
929 ret = sdio_set_block_size(sdiodev->func2, f2_blksz);
930 if (ret) {
931 brcmf_err("Failed to set F2 blocksize\n");
932 sdio_release_host(sdiodev->func1);
933 return ret;
934 } else {
935 brcmf_dbg(SDIO, "set F2 blocksize to %d\n", f2_blksz);
936 }
937
938 /* increase F2 timeout */
939 sdiodev->func2->enable_timeout = SDIO_WAIT_F2RDY;
940
941 /* Enable Function 1 */
942 ret = sdio_enable_func(sdiodev->func1);
943 sdio_release_host(sdiodev->func1);
944 if (ret) {
945 brcmf_err("Failed to enable F1: err=%d\n", ret);
946 goto out;
947 }
948
949 ret = brcmf_sdiod_freezer_attach(sdiodev);
950 if (ret)
951 goto out;
952
953 /* try to attach to the target device */
954 sdiodev->bus = brcmf_sdio_probe(sdiodev);
955 if (IS_ERR(sdiodev->bus)) {
956 ret = PTR_ERR(sdiodev->bus);
957 goto out;
958 }
959 brcmf_sdiod_host_fixup(sdiodev->func2->card->host);
960 out:
961 if (ret)
962 brcmf_sdiod_remove(sdiodev);
963
964 return ret;
965 }
966
967 #define BRCMF_SDIO_DEVICE(dev_id, fw_vend) \
968 { \
969 SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id), \
970 .driver_data = BRCMF_FWVENDOR_ ## fw_vend \
971 }
972
973 #define CYW_SDIO_DEVICE(dev_id, fw_vend) \
974 { \
975 SDIO_DEVICE(SDIO_VENDOR_ID_CYPRESS, dev_id), \
976 .driver_data = BRCMF_FWVENDOR_ ## fw_vend \
977 }
978
979 /* devices we support, null terminated */
980 static const struct sdio_device_id brcmf_sdmmc_ids[] = {
981 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143, WCC),
982 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241, WCC),
983 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329, WCC),
984 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330, WCC),
985 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334, WCC),
986 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340, WCC),
987 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341, WCC),
988 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362, WCC),
989 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43364, WCC),
990 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339, WCC),
991 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4339, WCC),
992 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430, WCC),
993 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43439, WCC),
994 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345, WCC),
995 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43455, WCC),
996 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354, WCC),
997 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4356, WCC),
998 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4359, WCC),
999 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_4373, CYW),
1000 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_43012, CYW),
1001 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_43752, CYW),
1002 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_89359, CYW),
1003 CYW_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_43439, CYW),
1004 { /* end: all zeroes */ }
1005 };
1006 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
1007
1008
brcmf_sdiod_acpi_save_power_manageable(struct brcmf_sdio_dev * sdiodev)1009 static void brcmf_sdiod_acpi_save_power_manageable(struct brcmf_sdio_dev *sdiodev)
1010 {
1011 #if IS_ENABLED(CONFIG_ACPI)
1012 struct acpi_device *adev;
1013
1014 adev = ACPI_COMPANION(&sdiodev->func1->dev);
1015 if (adev)
1016 sdiodev->func1_power_manageable = adev->flags.power_manageable;
1017
1018 adev = ACPI_COMPANION(&sdiodev->func2->dev);
1019 if (adev)
1020 sdiodev->func2_power_manageable = adev->flags.power_manageable;
1021 #endif
1022 }
1023
brcmf_sdiod_acpi_set_power_manageable(struct brcmf_sdio_dev * sdiodev,int enable)1024 static void brcmf_sdiod_acpi_set_power_manageable(struct brcmf_sdio_dev *sdiodev,
1025 int enable)
1026 {
1027 #if IS_ENABLED(CONFIG_ACPI)
1028 struct acpi_device *adev;
1029
1030 adev = ACPI_COMPANION(&sdiodev->func1->dev);
1031 if (adev)
1032 adev->flags.power_manageable = enable ? sdiodev->func1_power_manageable : 0;
1033
1034 adev = ACPI_COMPANION(&sdiodev->func2->dev);
1035 if (adev)
1036 adev->flags.power_manageable = enable ? sdiodev->func2_power_manageable : 0;
1037 #endif
1038 }
1039
brcmf_ops_sdio_probe(struct sdio_func * func,const struct sdio_device_id * id)1040 static int brcmf_ops_sdio_probe(struct sdio_func *func,
1041 const struct sdio_device_id *id)
1042 {
1043 int err;
1044 struct brcmf_sdio_dev *sdiodev;
1045 struct brcmf_bus *bus_if;
1046
1047 if (!id) {
1048 dev_err(&func->dev, "Error no sdio_device_id passed for %x:%x\n", func->vendor, func->device);
1049 return -ENODEV;
1050 }
1051
1052 brcmf_dbg(SDIO, "Enter\n");
1053 brcmf_dbg(SDIO, "Class=%x\n", func->class);
1054 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1055 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1056 brcmf_dbg(SDIO, "Function#: %d\n", func->num);
1057
1058 /* Set MMC_QUIRK_LENIENT_FN0 for this card */
1059 func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
1060
1061 /* Consume func num 1 but dont do anything with it. */
1062 if (func->num == 1)
1063 return 0;
1064
1065 /* Ignore anything but func 2 */
1066 if (func->num != 2)
1067 return -ENODEV;
1068
1069 bus_if = kzalloc(sizeof(*bus_if), GFP_KERNEL);
1070 if (!bus_if)
1071 return -ENOMEM;
1072 sdiodev = kzalloc(sizeof(*sdiodev), GFP_KERNEL);
1073 if (!sdiodev) {
1074 kfree(bus_if);
1075 return -ENOMEM;
1076 }
1077
1078 /* store refs to functions used. mmc_card does
1079 * not hold the F0 function pointer.
1080 */
1081 sdiodev->func1 = func->card->sdio_func[0];
1082 sdiodev->func2 = func;
1083
1084 sdiodev->bus_if = bus_if;
1085 bus_if->bus_priv.sdio = sdiodev;
1086 bus_if->proto_type = BRCMF_PROTO_BCDC;
1087 bus_if->fwvid = id->driver_data;
1088 dev_set_drvdata(&func->dev, bus_if);
1089 dev_set_drvdata(&sdiodev->func1->dev, bus_if);
1090 sdiodev->dev = &sdiodev->func1->dev;
1091
1092 brcmf_sdiod_acpi_save_power_manageable(sdiodev);
1093 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN);
1094
1095 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n");
1096 err = brcmf_sdiod_probe(sdiodev);
1097 if (err) {
1098 brcmf_err("F2 error, probe failed %d...\n", err);
1099 goto fail;
1100 }
1101
1102 brcmf_dbg(SDIO, "F2 init completed...\n");
1103 return 0;
1104
1105 fail:
1106 dev_set_drvdata(&func->dev, NULL);
1107 dev_set_drvdata(&sdiodev->func1->dev, NULL);
1108 kfree(sdiodev);
1109 kfree(bus_if);
1110 return err;
1111 }
1112
brcmf_ops_sdio_remove(struct sdio_func * func)1113 static void brcmf_ops_sdio_remove(struct sdio_func *func)
1114 {
1115 struct brcmf_bus *bus_if;
1116 struct brcmf_sdio_dev *sdiodev;
1117
1118 brcmf_dbg(SDIO, "Enter\n");
1119 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1120 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1121 brcmf_dbg(SDIO, "Function: %d\n", func->num);
1122
1123 bus_if = dev_get_drvdata(&func->dev);
1124 if (bus_if) {
1125 sdiodev = bus_if->bus_priv.sdio;
1126
1127 /* start by unregistering irqs */
1128 brcmf_sdiod_intr_unregister(sdiodev);
1129
1130 if (func->num != 1)
1131 return;
1132
1133 /* only proceed with rest of cleanup if func 1 */
1134 brcmf_sdiod_remove(sdiodev);
1135
1136 dev_set_drvdata(&sdiodev->func1->dev, NULL);
1137 dev_set_drvdata(&sdiodev->func2->dev, NULL);
1138
1139 kfree(bus_if);
1140 kfree(sdiodev);
1141 }
1142
1143 brcmf_dbg(SDIO, "Exit\n");
1144 }
1145
brcmf_sdio_wowl_config(struct device * dev,bool enabled)1146 void brcmf_sdio_wowl_config(struct device *dev, bool enabled)
1147 {
1148 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1149 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1150 mmc_pm_flag_t pm_caps = sdio_get_host_pm_caps(sdiodev->func1);
1151
1152 /* Power must be preserved to be able to support WOWL. */
1153 if (!(pm_caps & MMC_PM_KEEP_POWER))
1154 goto notsup;
1155
1156 if (sdiodev->settings->bus.sdio.oob_irq_supported ||
1157 pm_caps & MMC_PM_WAKE_SDIO_IRQ) {
1158 /* Stop ACPI from turning off the device when wowl is enabled */
1159 brcmf_sdiod_acpi_set_power_manageable(sdiodev, !enabled);
1160 sdiodev->wowl_enabled = enabled;
1161 brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled);
1162 return;
1163 }
1164
1165 notsup:
1166 brcmf_dbg(SDIO, "WOWL not supported\n");
1167 }
1168
brcmf_ops_sdio_suspend(struct device * dev)1169 static int brcmf_ops_sdio_suspend(struct device *dev)
1170 {
1171 struct sdio_func *func;
1172 struct brcmf_bus *bus_if;
1173 struct brcmf_sdio_dev *sdiodev;
1174 mmc_pm_flag_t sdio_flags;
1175 bool cap_power_off;
1176 int ret = 0;
1177
1178 func = container_of(dev, struct sdio_func, dev);
1179 brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1180 if (func->num != 1)
1181 return 0;
1182
1183 cap_power_off = !!(func->card->host->caps & MMC_CAP_POWER_OFF_CARD);
1184
1185 bus_if = dev_get_drvdata(dev);
1186 sdiodev = bus_if->bus_priv.sdio;
1187
1188 if (sdiodev->wowl_enabled || !cap_power_off) {
1189 brcmf_sdiod_freezer_on(sdiodev);
1190 brcmf_sdio_wd_timer(sdiodev->bus, 0);
1191
1192 sdio_flags = MMC_PM_KEEP_POWER;
1193
1194 if (sdiodev->wowl_enabled) {
1195 if (sdiodev->settings->bus.sdio.oob_irq_supported)
1196 enable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr);
1197 else
1198 sdio_flags |= MMC_PM_WAKE_SDIO_IRQ;
1199 }
1200
1201 if (sdio_set_host_pm_flags(sdiodev->func1, sdio_flags))
1202 brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
1203
1204 } else {
1205 /* power will be cut so remove device, probe again in resume */
1206 brcmf_sdiod_intr_unregister(sdiodev);
1207 ret = brcmf_sdiod_remove(sdiodev);
1208 if (ret)
1209 brcmf_err("Failed to remove device on suspend\n");
1210 }
1211
1212 return ret;
1213 }
1214
brcmf_ops_sdio_resume(struct device * dev)1215 static int brcmf_ops_sdio_resume(struct device *dev)
1216 {
1217 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1218 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1219 struct sdio_func *func = container_of(dev, struct sdio_func, dev);
1220 int ret = 0;
1221 bool cap_power_off = !!(func->card->host->caps & MMC_CAP_POWER_OFF_CARD);
1222
1223 brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1224 if (func->num != 2)
1225 return 0;
1226
1227 if (!sdiodev->wowl_enabled && cap_power_off) {
1228 /* bus was powered off and device removed, probe again */
1229 ret = brcmf_sdiod_probe(sdiodev);
1230 if (ret)
1231 brcmf_err("Failed to probe device on resume\n");
1232 } else {
1233 if (sdiodev->wowl_enabled && sdiodev->settings->bus.sdio.oob_irq_supported)
1234 disable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr);
1235
1236 brcmf_sdiod_freezer_off(sdiodev);
1237 }
1238
1239 return ret;
1240 }
1241
1242 static DEFINE_SIMPLE_DEV_PM_OPS(brcmf_sdio_pm_ops,
1243 brcmf_ops_sdio_suspend,
1244 brcmf_ops_sdio_resume);
1245
1246 static struct sdio_driver brcmf_sdmmc_driver = {
1247 .probe = brcmf_ops_sdio_probe,
1248 .remove = brcmf_ops_sdio_remove,
1249 .name = KBUILD_MODNAME,
1250 .id_table = brcmf_sdmmc_ids,
1251 .drv = {
1252 .pm = pm_sleep_ptr(&brcmf_sdio_pm_ops),
1253 .coredump = brcmf_dev_coredump,
1254 },
1255 };
1256
brcmf_sdio_register(void)1257 int brcmf_sdio_register(void)
1258 {
1259 return sdio_register_driver(&brcmf_sdmmc_driver);
1260 }
1261
brcmf_sdio_exit(void)1262 void brcmf_sdio_exit(void)
1263 {
1264 brcmf_dbg(SDIO, "Enter\n");
1265
1266 sdio_unregister_driver(&brcmf_sdmmc_driver);
1267 }
1268
1269