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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
50#define SDIO_WAIT_F2RDY 3000
51
52#define BRCMF_DEFAULT_RXGLOM_SIZE 32
53
54struct 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
62static 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
70
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
82static 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
93static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func)
94{
95}
96
97int 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
131 addr = CORE_CC_REG(SI_ENUM_BASE, gpiocontrol);
132 gpiocontrol = brcmf_sdiod_readl(sdiodev, addr, &ret);
133 gpiocontrol |= 0x2;
134 brcmf_sdiod_writel(sdiodev, addr, gpiocontrol, &ret);
135
136 brcmf_sdiod_writeb(sdiodev, SBSDIO_GPIO_SELECT,
137 0xf, &ret);
138 brcmf_sdiod_writeb(sdiodev, SBSDIO_GPIO_OUT, 0, &ret);
139 brcmf_sdiod_writeb(sdiodev, SBSDIO_GPIO_EN, 0x2, &ret);
140 }
141
142
143 data = brcmf_sdiod_func0_rb(sdiodev, SDIO_CCCR_IENx, &ret);
144 data |= SDIO_CCCR_IEN_FUNC1 | SDIO_CCCR_IEN_FUNC2 |
145 SDIO_CCCR_IEN_FUNC0;
146 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_IENx, data, &ret);
147
148
149 data = SDIO_CCCR_BRCM_SEPINT_MASK | SDIO_CCCR_BRCM_SEPINT_OE;
150 if (pdata->oob_irq_flags & IRQF_TRIGGER_HIGH)
151 data |= SDIO_CCCR_BRCM_SEPINT_ACT_HI;
152 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_BRCM_SEPINT,
153 data, &ret);
154 sdio_release_host(sdiodev->func1);
155 } else {
156 brcmf_dbg(SDIO, "Entering\n");
157 sdio_claim_host(sdiodev->func1);
158 sdio_claim_irq(sdiodev->func1, brcmf_sdiod_ib_irqhandler);
159 sdio_claim_irq(sdiodev->func2, brcmf_sdiod_dummy_irqhandler);
160 sdio_release_host(sdiodev->func1);
161 sdiodev->sd_irq_requested = true;
162 }
163
164 return 0;
165}
166
167void brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
168{
169
170 brcmf_dbg(SDIO, "Entering oob=%d sd=%d\n",
171 sdiodev->oob_irq_requested,
172 sdiodev->sd_irq_requested);
173
174 if (sdiodev->oob_irq_requested) {
175 struct brcmfmac_sdio_pd *pdata;
176
177 pdata = &sdiodev->settings->bus.sdio;
178 sdio_claim_host(sdiodev->func1);
179 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
180 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
181 sdio_release_host(sdiodev->func1);
182
183 sdiodev->oob_irq_requested = false;
184 free_irq(pdata->oob_irq_nr, &sdiodev->func1->dev);
185 sdiodev->irq_en = false;
186 sdiodev->oob_irq_requested = false;
187 }
188
189 if (sdiodev->sd_irq_requested) {
190 sdio_claim_host(sdiodev->func1);
191 sdio_release_irq(sdiodev->func2);
192 sdio_release_irq(sdiodev->func1);
193 sdio_release_host(sdiodev->func1);
194 sdiodev->sd_irq_requested = false;
195 }
196}
197
198void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev,
199 enum brcmf_sdiod_state state)
200{
201 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM ||
202 state == sdiodev->state)
203 return;
204
205 brcmf_dbg(TRACE, "%d -> %d\n", sdiodev->state, state);
206 switch (sdiodev->state) {
207 case BRCMF_SDIOD_DATA:
208
209 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN);
210 break;
211 case BRCMF_SDIOD_DOWN:
212
213 if (state == BRCMF_SDIOD_DATA)
214 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_UP);
215 break;
216 default:
217 break;
218 }
219 sdiodev->state = state;
220}
221
222static int brcmf_sdiod_set_backplane_window(struct brcmf_sdio_dev *sdiodev,
223 u32 addr)
224{
225 u32 v, bar0 = addr & SBSDIO_SBWINDOW_MASK;
226 int err = 0, i;
227
228 if (bar0 == sdiodev->sbwad)
229 return 0;
230
231 v = bar0 >> 8;
232
233 for (i = 0 ; i < 3 && !err ; i++, v >>= 8)
234 brcmf_sdiod_writeb(sdiodev, SBSDIO_FUNC1_SBADDRLOW + i,
235 v & 0xff, &err);
236
237 if (!err)
238 sdiodev->sbwad = bar0;
239
240 return err;
241}
242
243u32 brcmf_sdiod_readl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
244{
245 u32 data = 0;
246 int retval;
247
248 retval = brcmf_sdiod_set_backplane_window(sdiodev, addr);
249 if (retval)
250 goto out;
251
252 addr &= SBSDIO_SB_OFT_ADDR_MASK;
253 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
254
255 data = sdio_readl(sdiodev->func1, addr, &retval);
256
257out:
258 if (ret)
259 *ret = retval;
260
261 return data;
262}
263
264void brcmf_sdiod_writel(struct brcmf_sdio_dev *sdiodev, u32 addr,
265 u32 data, int *ret)
266{
267 int retval;
268
269 retval = brcmf_sdiod_set_backplane_window(sdiodev, addr);
270 if (retval)
271 goto out;
272
273 addr &= SBSDIO_SB_OFT_ADDR_MASK;
274 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
275
276 sdio_writel(sdiodev->func1, data, addr, &retval);
277
278out:
279 if (ret)
280 *ret = retval;
281}
282
283static int brcmf_sdiod_skbuff_read(struct brcmf_sdio_dev *sdiodev,
284 struct sdio_func *func, u32 addr,
285 struct sk_buff *skb)
286{
287 unsigned int req_sz;
288 int err;
289
290
291 req_sz = skb->len + 3;
292 req_sz &= (uint)~3;
293
294 switch (func->num) {
295 case 1:
296 err = sdio_memcpy_fromio(func, ((u8 *)(skb->data)), addr,
297 req_sz);
298 break;
299 case 2:
300 err = sdio_readsb(func, ((u8 *)(skb->data)), addr, req_sz);
301 break;
302 default:
303
304 WARN(1, "invalid sdio function number: %d\n", func->num);
305 err = -ENOMEDIUM;
306 }
307
308 if (err == -ENOMEDIUM)
309 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
310
311 return err;
312}
313
314static int brcmf_sdiod_skbuff_write(struct brcmf_sdio_dev *sdiodev,
315 struct sdio_func *func, u32 addr,
316 struct sk_buff *skb)
317{
318 unsigned int req_sz;
319 int err;
320
321
322 req_sz = skb->len + 3;
323 req_sz &= (uint)~3;
324
325 err = sdio_memcpy_toio(func, addr, ((u8 *)(skb->data)), req_sz);
326
327 if (err == -ENOMEDIUM)
328 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
329
330 return err;
331}
332
333static int mmc_submit_one(struct mmc_data *md, struct mmc_request *mr,
334 struct mmc_command *mc, int sg_cnt, int req_sz,
335 int func_blk_sz, u32 *addr,
336 struct brcmf_sdio_dev *sdiodev,
337 struct sdio_func *func, int write)
338{
339 int ret;
340
341 md->sg_len = sg_cnt;
342 md->blocks = req_sz / func_blk_sz;
343 mc->arg |= (*addr & 0x1FFFF) << 9;
344 mc->arg |= md->blocks & 0x1FF;
345
346 if (func->num == 1)
347 *addr += req_sz;
348
349 mmc_set_data_timeout(md, func->card);
350 mmc_wait_for_req(func->card->host, mr);
351
352 ret = mc->error ? mc->error : md->error;
353 if (ret == -ENOMEDIUM) {
354 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
355 } else if (ret != 0) {
356 brcmf_err("CMD53 sg block %s failed %d\n",
357 write ? "write" : "read", ret);
358 ret = -EIO;
359 }
360
361 return ret;
362}
363
364
365
366
367
368
369
370
371
372
373
374
375
376static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev,
377 struct sdio_func *func,
378 bool write, u32 addr,
379 struct sk_buff_head *pktlist)
380{
381 unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset;
382 unsigned int max_req_sz, src_offset, dst_offset;
383 unsigned char *pkt_data, *orig_data, *dst_data;
384 struct sk_buff_head local_list, *target_list;
385 struct sk_buff *pkt_next = NULL, *src;
386 unsigned short max_seg_cnt;
387 struct mmc_request mmc_req;
388 struct mmc_command mmc_cmd;
389 struct mmc_data mmc_dat;
390 struct scatterlist *sgl;
391 int ret = 0;
392
393 if (!pktlist->qlen)
394 return -EINVAL;
395
396 target_list = pktlist;
397
398 __skb_queue_head_init(&local_list);
399 if (!write && sdiodev->settings->bus.sdio.broken_sg_support) {
400 req_sz = 0;
401 skb_queue_walk(pktlist, pkt_next)
402 req_sz += pkt_next->len;
403 req_sz = ALIGN(req_sz, func->cur_blksize);
404 while (req_sz > PAGE_SIZE) {
405 pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE);
406 if (pkt_next == NULL) {
407 ret = -ENOMEM;
408 goto exit;
409 }
410 __skb_queue_tail(&local_list, pkt_next);
411 req_sz -= PAGE_SIZE;
412 }
413 pkt_next = brcmu_pkt_buf_get_skb(req_sz);
414 if (pkt_next == NULL) {
415 ret = -ENOMEM;
416 goto exit;
417 }
418 __skb_queue_tail(&local_list, pkt_next);
419 target_list = &local_list;
420 }
421
422 func_blk_sz = func->cur_blksize;
423 max_req_sz = sdiodev->max_request_size;
424 max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count,
425 target_list->qlen);
426
427 memset(&mmc_req, 0, sizeof(struct mmc_request));
428 memset(&mmc_cmd, 0, sizeof(struct mmc_command));
429 memset(&mmc_dat, 0, sizeof(struct mmc_data));
430
431 mmc_dat.sg = sdiodev->sgtable.sgl;
432 mmc_dat.blksz = func_blk_sz;
433 mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
434 mmc_cmd.opcode = SD_IO_RW_EXTENDED;
435 mmc_cmd.arg = write ? 1<<31 : 0;
436 mmc_cmd.arg |= (func->num & 0x7) << 28;
437 mmc_cmd.arg |= 1 << 27;
438
439 mmc_cmd.arg |= (func->num == 1) ? 1 << 26 : 0;
440 mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
441 mmc_req.cmd = &mmc_cmd;
442 mmc_req.data = &mmc_dat;
443
444 req_sz = 0;
445 sg_cnt = 0;
446 sgl = sdiodev->sgtable.sgl;
447 skb_queue_walk(target_list, pkt_next) {
448 pkt_offset = 0;
449 while (pkt_offset < pkt_next->len) {
450 pkt_data = pkt_next->data + pkt_offset;
451 sg_data_sz = pkt_next->len - pkt_offset;
452 if (sg_data_sz > sdiodev->max_segment_size)
453 sg_data_sz = sdiodev->max_segment_size;
454 if (sg_data_sz > max_req_sz - req_sz)
455 sg_data_sz = max_req_sz - req_sz;
456
457 sg_set_buf(sgl, pkt_data, sg_data_sz);
458 sg_cnt++;
459
460 sgl = sg_next(sgl);
461 req_sz += sg_data_sz;
462 pkt_offset += sg_data_sz;
463 if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt) {
464 ret = mmc_submit_one(&mmc_dat, &mmc_req, &mmc_cmd,
465 sg_cnt, req_sz, func_blk_sz,
466 &addr, sdiodev, func, write);
467 if (ret)
468 goto exit_queue_walk;
469 req_sz = 0;
470 sg_cnt = 0;
471 sgl = sdiodev->sgtable.sgl;
472 }
473 }
474 }
475 if (sg_cnt)
476 ret = mmc_submit_one(&mmc_dat, &mmc_req, &mmc_cmd,
477 sg_cnt, req_sz, func_blk_sz,
478 &addr, sdiodev, func, write);
479exit_queue_walk:
480 if (!write && sdiodev->settings->bus.sdio.broken_sg_support) {
481 src = __skb_peek(&local_list);
482 src_offset = 0;
483 skb_queue_walk(pktlist, pkt_next) {
484 dst_offset = 0;
485
486
487
488
489 while (1) {
490 req_sz = pkt_next->len - dst_offset;
491 if (req_sz > src->len - src_offset)
492 req_sz = src->len - src_offset;
493
494 orig_data = src->data + src_offset;
495 dst_data = pkt_next->data + dst_offset;
496 memcpy(dst_data, orig_data, req_sz);
497
498 src_offset += req_sz;
499 if (src_offset == src->len) {
500 src_offset = 0;
501 src = skb_peek_next(src, &local_list);
502 }
503 dst_offset += req_sz;
504 if (dst_offset == pkt_next->len)
505 break;
506 }
507 }
508 }
509
510exit:
511 sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents);
512 while ((pkt_next = __skb_dequeue(&local_list)) != NULL)
513 brcmu_pkt_buf_free_skb(pkt_next);
514
515 return ret;
516}
517
518int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
519{
520 struct sk_buff *mypkt;
521 int err;
522
523 mypkt = brcmu_pkt_buf_get_skb(nbytes);
524 if (!mypkt) {
525 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
526 nbytes);
527 return -EIO;
528 }
529
530 err = brcmf_sdiod_recv_pkt(sdiodev, mypkt);
531 if (!err)
532 memcpy(buf, mypkt->data, nbytes);
533
534 brcmu_pkt_buf_free_skb(mypkt);
535 return err;
536}
537
538int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt)
539{
540 u32 addr = sdiodev->cc_core->base;
541 int err = 0;
542
543 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len);
544
545 err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
546 if (err)
547 goto done;
548
549 addr &= SBSDIO_SB_OFT_ADDR_MASK;
550 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
551
552 err = brcmf_sdiod_skbuff_read(sdiodev, sdiodev->func2, addr, pkt);
553
554done:
555 return err;
556}
557
558int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
559 struct sk_buff_head *pktq, uint totlen)
560{
561 struct sk_buff *glom_skb = NULL;
562 struct sk_buff *skb;
563 u32 addr = sdiodev->cc_core->base;
564 int err = 0;
565
566 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n",
567 addr, pktq->qlen);
568
569 err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
570 if (err)
571 goto done;
572
573 addr &= SBSDIO_SB_OFT_ADDR_MASK;
574 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
575
576 if (pktq->qlen == 1)
577 err = brcmf_sdiod_skbuff_read(sdiodev, sdiodev->func2, addr,
578 __skb_peek(pktq));
579 else if (!sdiodev->sg_support) {
580 glom_skb = brcmu_pkt_buf_get_skb(totlen);
581 if (!glom_skb)
582 return -ENOMEM;
583 err = brcmf_sdiod_skbuff_read(sdiodev, sdiodev->func2, addr,
584 glom_skb);
585 if (err)
586 goto done;
587
588 skb_queue_walk(pktq, skb) {
589 memcpy(skb->data, glom_skb->data, skb->len);
590 skb_pull(glom_skb, skb->len);
591 }
592 } else
593 err = brcmf_sdiod_sglist_rw(sdiodev, sdiodev->func2, false,
594 addr, pktq);
595
596done:
597 brcmu_pkt_buf_free_skb(glom_skb);
598 return err;
599}
600
601int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
602{
603 struct sk_buff *mypkt;
604 u32 addr = sdiodev->cc_core->base;
605 int err;
606
607 mypkt = brcmu_pkt_buf_get_skb(nbytes);
608
609 if (!mypkt) {
610 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
611 nbytes);
612 return -EIO;
613 }
614
615 memcpy(mypkt->data, buf, nbytes);
616
617 err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
618 if (err)
619 goto out;
620
621 addr &= SBSDIO_SB_OFT_ADDR_MASK;
622 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
623
624 err = brcmf_sdiod_skbuff_write(sdiodev, sdiodev->func2, addr, mypkt);
625out:
626 brcmu_pkt_buf_free_skb(mypkt);
627
628 return err;
629}
630
631int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
632 struct sk_buff_head *pktq)
633{
634 struct sk_buff *skb;
635 u32 addr = sdiodev->cc_core->base;
636 int err;
637
638 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen);
639
640 err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
641 if (err)
642 return err;
643
644 addr &= SBSDIO_SB_OFT_ADDR_MASK;
645 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
646
647 if (pktq->qlen == 1 || !sdiodev->sg_support) {
648 skb_queue_walk(pktq, skb) {
649 err = brcmf_sdiod_skbuff_write(sdiodev, sdiodev->func2,
650 addr, skb);
651 if (err)
652 break;
653 }
654 } else {
655 err = brcmf_sdiod_sglist_rw(sdiodev, sdiodev->func2, true,
656 addr, pktq);
657 }
658
659 return err;
660}
661
662int
663brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
664 u8 *data, uint size)
665{
666 int err = 0;
667 struct sk_buff *pkt;
668 u32 sdaddr;
669 uint dsize;
670
671 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
672 pkt = dev_alloc_skb(dsize);
673 if (!pkt) {
674 brcmf_err("dev_alloc_skb failed: len %d\n", dsize);
675 return -EIO;
676 }
677 pkt->priority = 0;
678
679
680 sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK;
681 if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK)
682 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr);
683 else
684 dsize = size;
685
686 sdio_claim_host(sdiodev->func1);
687
688
689 while (size) {
690
691 err = brcmf_sdiod_set_backplane_window(sdiodev, address);
692 if (err)
693 break;
694
695 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n",
696 write ? "write" : "read", dsize,
697 sdaddr, address & SBSDIO_SBWINDOW_MASK);
698
699 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK;
700 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
701
702 skb_put(pkt, dsize);
703
704 if (write) {
705 memcpy(pkt->data, data, dsize);
706 err = brcmf_sdiod_skbuff_write(sdiodev, sdiodev->func1,
707 sdaddr, pkt);
708 } else {
709 err = brcmf_sdiod_skbuff_read(sdiodev, sdiodev->func1,
710 sdaddr, pkt);
711 }
712
713 if (err) {
714 brcmf_err("membytes transfer failed\n");
715 break;
716 }
717 if (!write)
718 memcpy(data, pkt->data, dsize);
719 skb_trim(pkt, 0);
720
721
722 size -= dsize;
723 if (size) {
724 data += dsize;
725 address += dsize;
726 sdaddr = 0;
727 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
728 }
729 }
730
731 dev_kfree_skb(pkt);
732
733 sdio_release_host(sdiodev->func1);
734
735 return err;
736}
737
738int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, struct sdio_func *func)
739{
740 brcmf_dbg(SDIO, "Enter\n");
741
742
743 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_ABORT, func->num, NULL);
744
745 brcmf_dbg(SDIO, "Exit\n");
746 return 0;
747}
748
749void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev)
750{
751 struct sdio_func *func;
752 struct mmc_host *host;
753 uint max_blocks;
754 uint nents;
755 int err;
756
757 func = sdiodev->func2;
758 host = func->card->host;
759 sdiodev->sg_support = host->max_segs > 1;
760 max_blocks = min_t(uint, host->max_blk_count, 511u);
761 sdiodev->max_request_size = min_t(uint, host->max_req_size,
762 max_blocks * func->cur_blksize);
763 sdiodev->max_segment_count = min_t(uint, host->max_segs,
764 SG_MAX_SINGLE_ALLOC);
765 sdiodev->max_segment_size = host->max_seg_size;
766
767 if (!sdiodev->sg_support)
768 return;
769
770 nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE,
771 sdiodev->settings->bus.sdio.txglomsz);
772 nents += (nents >> 4) + 1;
773
774 WARN_ON(nents > sdiodev->max_segment_count);
775
776 brcmf_dbg(TRACE, "nents=%d\n", nents);
777 err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL);
778 if (err < 0) {
779 brcmf_err("allocation failed: disable scatter-gather");
780 sdiodev->sg_support = false;
781 }
782
783 sdiodev->txglomsz = sdiodev->settings->bus.sdio.txglomsz;
784}
785
786#ifdef CONFIG_PM_SLEEP
787static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev)
788{
789 sdiodev->freezer = kzalloc(sizeof(*sdiodev->freezer), GFP_KERNEL);
790 if (!sdiodev->freezer)
791 return -ENOMEM;
792 atomic_set(&sdiodev->freezer->thread_count, 0);
793 atomic_set(&sdiodev->freezer->freezing, 0);
794 init_waitqueue_head(&sdiodev->freezer->thread_freeze);
795 init_completion(&sdiodev->freezer->resumed);
796 return 0;
797}
798
799static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev)
800{
801 if (sdiodev->freezer) {
802 WARN_ON(atomic_read(&sdiodev->freezer->freezing));
803 kfree(sdiodev->freezer);
804 }
805}
806
807static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev *sdiodev)
808{
809 atomic_t *expect = &sdiodev->freezer->thread_count;
810 int res = 0;
811
812 sdiodev->freezer->frozen_count = 0;
813 reinit_completion(&sdiodev->freezer->resumed);
814 atomic_set(&sdiodev->freezer->freezing, 1);
815 brcmf_sdio_trigger_dpc(sdiodev->bus);
816 wait_event(sdiodev->freezer->thread_freeze,
817 atomic_read(expect) == sdiodev->freezer->frozen_count);
818 sdio_claim_host(sdiodev->func1);
819 res = brcmf_sdio_sleep(sdiodev->bus, true);
820 sdio_release_host(sdiodev->func1);
821 return res;
822}
823
824static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev *sdiodev)
825{
826 sdio_claim_host(sdiodev->func1);
827 brcmf_sdio_sleep(sdiodev->bus, false);
828 sdio_release_host(sdiodev->func1);
829 atomic_set(&sdiodev->freezer->freezing, 0);
830 complete_all(&sdiodev->freezer->resumed);
831}
832
833bool brcmf_sdiod_freezing(struct brcmf_sdio_dev *sdiodev)
834{
835 return atomic_read(&sdiodev->freezer->freezing);
836}
837
838void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev *sdiodev)
839{
840 if (!brcmf_sdiod_freezing(sdiodev))
841 return;
842 sdiodev->freezer->frozen_count++;
843 wake_up(&sdiodev->freezer->thread_freeze);
844 wait_for_completion(&sdiodev->freezer->resumed);
845}
846
847void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev *sdiodev)
848{
849 atomic_inc(&sdiodev->freezer->thread_count);
850}
851
852void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev *sdiodev)
853{
854 atomic_dec(&sdiodev->freezer->thread_count);
855}
856#else
857static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev)
858{
859 return 0;
860}
861
862static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev)
863{
864}
865#endif
866
867int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev)
868{
869 sdiodev->state = BRCMF_SDIOD_DOWN;
870 if (sdiodev->bus) {
871 brcmf_sdio_remove(sdiodev->bus);
872 sdiodev->bus = NULL;
873 }
874
875 brcmf_sdiod_freezer_detach(sdiodev);
876
877
878 sdio_claim_host(sdiodev->func2);
879 sdio_disable_func(sdiodev->func2);
880 sdio_release_host(sdiodev->func2);
881
882
883 sdio_claim_host(sdiodev->func1);
884 sdio_disable_func(sdiodev->func1);
885 sdio_release_host(sdiodev->func1);
886
887 sg_free_table(&sdiodev->sgtable);
888 sdiodev->sbwad = 0;
889
890 pm_runtime_allow(sdiodev->func1->card->host->parent);
891 return 0;
892}
893
894static void brcmf_sdiod_host_fixup(struct mmc_host *host)
895{
896
897 pm_runtime_forbid(host->parent);
898
899 host->caps |= MMC_CAP_NONREMOVABLE;
900}
901
902int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev)
903{
904 int ret = 0;
905 unsigned int f2_blksz = SDIO_FUNC2_BLOCKSIZE;
906
907 sdio_claim_host(sdiodev->func1);
908
909 ret = sdio_set_block_size(sdiodev->func1, SDIO_FUNC1_BLOCKSIZE);
910 if (ret) {
911 brcmf_err("Failed to set F1 blocksize\n");
912 sdio_release_host(sdiodev->func1);
913 goto out;
914 }
915 switch (sdiodev->func2->device) {
916 case SDIO_DEVICE_ID_BROADCOM_CYPRESS_4373:
917 f2_blksz = SDIO_4373_FUNC2_BLOCKSIZE;
918 break;
919 case SDIO_DEVICE_ID_BROADCOM_4359:
920 case SDIO_DEVICE_ID_BROADCOM_4354:
921 case SDIO_DEVICE_ID_BROADCOM_4356:
922 f2_blksz = SDIO_435X_FUNC2_BLOCKSIZE;
923 break;
924 case SDIO_DEVICE_ID_BROADCOM_4329:
925 f2_blksz = SDIO_4329_FUNC2_BLOCKSIZE;
926 break;
927 default:
928 break;
929 }
930
931 ret = sdio_set_block_size(sdiodev->func2, f2_blksz);
932 if (ret) {
933 brcmf_err("Failed to set F2 blocksize\n");
934 sdio_release_host(sdiodev->func1);
935 goto out;
936 } else {
937 brcmf_dbg(SDIO, "set F2 blocksize to %d\n", f2_blksz);
938 }
939
940
941 sdiodev->func2->enable_timeout = SDIO_WAIT_F2RDY;
942
943
944 ret = sdio_enable_func(sdiodev->func1);
945 sdio_release_host(sdiodev->func1);
946 if (ret) {
947 brcmf_err("Failed to enable F1: err=%d\n", ret);
948 goto out;
949 }
950
951 ret = brcmf_sdiod_freezer_attach(sdiodev);
952 if (ret)
953 goto out;
954
955
956 sdiodev->bus = brcmf_sdio_probe(sdiodev);
957 if (!sdiodev->bus) {
958 ret = -ENODEV;
959 goto out;
960 }
961 brcmf_sdiod_host_fixup(sdiodev->func2->card->host);
962out:
963 if (ret)
964 brcmf_sdiod_remove(sdiodev);
965
966 return ret;
967}
968
969#define BRCMF_SDIO_DEVICE(dev_id) \
970 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)}
971
972
973static const struct sdio_device_id brcmf_sdmmc_ids[] = {
974 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143),
975 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241),
976 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329),
977 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330),
978 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334),
979 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340),
980 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341),
981 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362),
982 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43364),
983 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339),
984 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4339),
985 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430),
986 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345),
987 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43455),
988 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354),
989 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4356),
990 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4359),
991 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_4373),
992 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_43012),
993 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_89359),
994 { }
995};
996MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
997
998
999static void brcmf_sdiod_acpi_set_power_manageable(struct device *dev,
1000 int val)
1001{
1002#if IS_ENABLED(CONFIG_ACPI)
1003 struct acpi_device *adev;
1004
1005 adev = ACPI_COMPANION(dev);
1006 if (adev)
1007 adev->flags.power_manageable = 0;
1008#endif
1009}
1010
1011static int brcmf_ops_sdio_probe(struct sdio_func *func,
1012 const struct sdio_device_id *id)
1013{
1014 int err;
1015 struct brcmf_sdio_dev *sdiodev;
1016 struct brcmf_bus *bus_if;
1017 struct device *dev;
1018
1019 brcmf_dbg(SDIO, "Enter\n");
1020 brcmf_dbg(SDIO, "Class=%x\n", func->class);
1021 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1022 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1023 brcmf_dbg(SDIO, "Function#: %d\n", func->num);
1024
1025 dev = &func->dev;
1026
1027
1028 func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
1029
1030
1031 brcmf_sdiod_acpi_set_power_manageable(dev, 0);
1032
1033
1034 if (func->num == 1)
1035 return 0;
1036
1037
1038 if (func->num != 2)
1039 return -ENODEV;
1040
1041 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
1042 if (!bus_if)
1043 return -ENOMEM;
1044 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
1045 if (!sdiodev) {
1046 kfree(bus_if);
1047 return -ENOMEM;
1048 }
1049
1050
1051
1052
1053 sdiodev->func1 = func->card->sdio_func[0];
1054 sdiodev->func2 = func;
1055
1056 sdiodev->bus_if = bus_if;
1057 bus_if->bus_priv.sdio = sdiodev;
1058 bus_if->proto_type = BRCMF_PROTO_BCDC;
1059 dev_set_drvdata(&func->dev, bus_if);
1060 dev_set_drvdata(&sdiodev->func1->dev, bus_if);
1061 sdiodev->dev = &sdiodev->func1->dev;
1062
1063 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN);
1064
1065 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n");
1066 err = brcmf_sdiod_probe(sdiodev);
1067 if (err) {
1068 brcmf_err("F2 error, probe failed %d...\n", err);
1069 goto fail;
1070 }
1071
1072 brcmf_dbg(SDIO, "F2 init completed...\n");
1073 return 0;
1074
1075fail:
1076 dev_set_drvdata(&func->dev, NULL);
1077 dev_set_drvdata(&sdiodev->func1->dev, NULL);
1078 kfree(sdiodev);
1079 kfree(bus_if);
1080 return err;
1081}
1082
1083static void brcmf_ops_sdio_remove(struct sdio_func *func)
1084{
1085 struct brcmf_bus *bus_if;
1086 struct brcmf_sdio_dev *sdiodev;
1087
1088 brcmf_dbg(SDIO, "Enter\n");
1089 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1090 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1091 brcmf_dbg(SDIO, "Function: %d\n", func->num);
1092
1093 bus_if = dev_get_drvdata(&func->dev);
1094 if (bus_if) {
1095 sdiodev = bus_if->bus_priv.sdio;
1096
1097
1098 brcmf_sdiod_intr_unregister(sdiodev);
1099
1100 if (func->num != 1)
1101 return;
1102
1103
1104 brcmf_sdiod_remove(sdiodev);
1105
1106 dev_set_drvdata(&sdiodev->func1->dev, NULL);
1107 dev_set_drvdata(&sdiodev->func2->dev, NULL);
1108
1109 kfree(bus_if);
1110 kfree(sdiodev);
1111 }
1112
1113 brcmf_dbg(SDIO, "Exit\n");
1114}
1115
1116void brcmf_sdio_wowl_config(struct device *dev, bool enabled)
1117{
1118 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1119 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1120
1121 brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled);
1122 sdiodev->wowl_enabled = enabled;
1123}
1124
1125#ifdef CONFIG_PM_SLEEP
1126static int brcmf_ops_sdio_suspend(struct device *dev)
1127{
1128 struct sdio_func *func;
1129 struct brcmf_bus *bus_if;
1130 struct brcmf_sdio_dev *sdiodev;
1131 mmc_pm_flag_t pm_caps, sdio_flags;
1132 int ret = 0;
1133
1134 func = container_of(dev, struct sdio_func, dev);
1135 brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1136 if (func->num != 1)
1137 return 0;
1138
1139
1140 bus_if = dev_get_drvdata(dev);
1141 sdiodev = bus_if->bus_priv.sdio;
1142
1143 pm_caps = sdio_get_host_pm_caps(func);
1144
1145 if (pm_caps & MMC_PM_KEEP_POWER) {
1146
1147 brcmf_sdiod_freezer_on(sdiodev);
1148 brcmf_sdio_wd_timer(sdiodev->bus, 0);
1149
1150 sdio_flags = MMC_PM_KEEP_POWER;
1151 if (sdiodev->wowl_enabled) {
1152 if (sdiodev->settings->bus.sdio.oob_irq_supported)
1153 enable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr);
1154 else
1155 sdio_flags |= MMC_PM_WAKE_SDIO_IRQ;
1156 }
1157
1158 if (sdio_set_host_pm_flags(sdiodev->func1, sdio_flags))
1159 brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
1160
1161 } else {
1162
1163 brcmf_sdiod_intr_unregister(sdiodev);
1164 ret = brcmf_sdiod_remove(sdiodev);
1165 if (ret)
1166 brcmf_err("Failed to remove device on suspend\n");
1167 }
1168
1169 return ret;
1170}
1171
1172static int brcmf_ops_sdio_resume(struct device *dev)
1173{
1174 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1175 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1176 struct sdio_func *func = container_of(dev, struct sdio_func, dev);
1177 mmc_pm_flag_t pm_caps = sdio_get_host_pm_caps(func);
1178 int ret = 0;
1179
1180 brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1181 if (func->num != 2)
1182 return 0;
1183
1184 if (!(pm_caps & MMC_PM_KEEP_POWER)) {
1185
1186 ret = brcmf_sdiod_probe(sdiodev);
1187 if (ret)
1188 brcmf_err("Failed to probe device on resume\n");
1189 } else {
1190 if (sdiodev->wowl_enabled &&
1191 sdiodev->settings->bus.sdio.oob_irq_supported)
1192 disable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr);
1193
1194 brcmf_sdiod_freezer_off(sdiodev);
1195 }
1196
1197 return ret;
1198}
1199
1200static const struct dev_pm_ops brcmf_sdio_pm_ops = {
1201 .suspend = brcmf_ops_sdio_suspend,
1202 .resume = brcmf_ops_sdio_resume,
1203};
1204#endif
1205
1206static struct sdio_driver brcmf_sdmmc_driver = {
1207 .probe = brcmf_ops_sdio_probe,
1208 .remove = brcmf_ops_sdio_remove,
1209 .name = KBUILD_MODNAME,
1210 .id_table = brcmf_sdmmc_ids,
1211 .drv = {
1212 .owner = THIS_MODULE,
1213#ifdef CONFIG_PM_SLEEP
1214 .pm = &brcmf_sdio_pm_ops,
1215#endif
1216 .coredump = brcmf_dev_coredump,
1217 },
1218};
1219
1220void brcmf_sdio_register(void)
1221{
1222 int ret;
1223
1224 ret = sdio_register_driver(&brcmf_sdmmc_driver);
1225 if (ret)
1226 brcmf_err("sdio_register_driver failed: %d\n", ret);
1227}
1228
1229void brcmf_sdio_exit(void)
1230{
1231 brcmf_dbg(SDIO, "Enter\n");
1232
1233 sdio_unregister_driver(&brcmf_sdmmc_driver);
1234}
1235
1236
