1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17#include <linux/types.h>
18#include <linux/netdevice.h>
19#include <linux/mmc/sdio.h>
20#include <linux/mmc/core.h>
21#include <linux/mmc/sdio_func.h>
22#include <linux/mmc/sdio_ids.h>
23#include <linux/mmc/card.h>
24#include <linux/suspend.h>
25#include <linux/errno.h>
26#include <linux/sched.h>
27#include <linux/module.h>
28#include <linux/platform_device.h>
29#include <net/cfg80211.h>
30
31#include <defs.h>
32#include <brcm_hw_ids.h>
33#include <brcmu_utils.h>
34#include <brcmu_wifi.h>
35#include "sdio_host.h"
36#include "dhd_dbg.h"
37#include "dhd_bus.h"
38
39#define SDIO_VENDOR_ID_BROADCOM 0x02d0
40
41#define DMA_ALIGN_MASK 0x03
42
43#define SDIO_DEVICE_ID_BROADCOM_43241 0x4324
44#define SDIO_DEVICE_ID_BROADCOM_4329 0x4329
45#define SDIO_DEVICE_ID_BROADCOM_4330 0x4330
46#define SDIO_DEVICE_ID_BROADCOM_4334 0x4334
47
48#define SDIO_FUNC1_BLOCKSIZE 64
49#define SDIO_FUNC2_BLOCKSIZE 512
50
51
52static const struct sdio_device_id brcmf_sdmmc_ids[] = {
53 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43241)},
54 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
55 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
56 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4334)},
57 { },
58};
59MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
60
61#ifdef CONFIG_BRCMFMAC_SDIO_OOB
62static struct list_head oobirq_lh;
63struct brcmf_sdio_oobirq {
64 unsigned int irq;
65 unsigned long flags;
66 struct list_head list;
67};
68#endif
69
70static bool
71brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
72{
73 bool is_err = false;
74#ifdef CONFIG_PM_SLEEP
75 is_err = atomic_read(&sdiodev->suspend);
76#endif
77 return is_err;
78}
79
80static void
81brcmf_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, wait_queue_head_t *wq)
82{
83#ifdef CONFIG_PM_SLEEP
84 int retry = 0;
85 while (atomic_read(&sdiodev->suspend) && retry++ != 30)
86 wait_event_timeout(*wq, false, HZ/100);
87#endif
88}
89
90static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
91 uint regaddr, u8 *byte)
92{
93 struct sdio_func *sdfunc = sdiodev->func[0];
94 int err_ret;
95
96
97
98
99
100
101 if (regaddr == SDIO_CCCR_IOEx) {
102 sdfunc = sdiodev->func[2];
103 if (sdfunc) {
104 if (*byte & SDIO_FUNC_ENABLE_2) {
105
106 err_ret = sdio_enable_func(sdfunc);
107 if (err_ret)
108 brcmf_err("enable F2 failed:%d\n",
109 err_ret);
110 } else {
111
112 err_ret = sdio_disable_func(sdfunc);
113 if (err_ret)
114 brcmf_err("Disable F2 failed:%d\n",
115 err_ret);
116 }
117 }
118 } else if ((regaddr == SDIO_CCCR_ABORT) ||
119 (regaddr == SDIO_CCCR_IENx)) {
120 sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func),
121 GFP_KERNEL);
122 if (!sdfunc)
123 return -ENOMEM;
124 sdfunc->num = 0;
125 sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
126 kfree(sdfunc);
127 } else if (regaddr < 0xF0) {
128 brcmf_err("F0 Wr:0x%02x: write disallowed\n", regaddr);
129 err_ret = -EPERM;
130 } else {
131 sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
132 }
133
134 return err_ret;
135}
136
137int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
138 uint regaddr, u8 *byte)
139{
140 int err_ret;
141
142 brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
143
144 brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
145 if (brcmf_pm_resume_error(sdiodev))
146 return -EIO;
147
148 if (rw && func == 0) {
149
150 err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
151 } else {
152 if (rw)
153 sdio_writeb(sdiodev->func[func], *byte, regaddr,
154 &err_ret);
155 else if (func == 0) {
156 *byte = sdio_f0_readb(sdiodev->func[func], regaddr,
157 &err_ret);
158 } else {
159 *byte = sdio_readb(sdiodev->func[func], regaddr,
160 &err_ret);
161 }
162 }
163
164 if (err_ret)
165 brcmf_err("Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
166 rw ? "write" : "read", func, regaddr, *byte, err_ret);
167
168 return err_ret;
169}
170
171int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
172 uint rw, uint func, uint addr, u32 *word,
173 uint nbytes)
174{
175 int err_ret = -EIO;
176
177 if (func == 0) {
178 brcmf_err("Only CMD52 allowed to F0\n");
179 return -EINVAL;
180 }
181
182 brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
183 rw, func, addr, nbytes);
184
185 brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
186 if (brcmf_pm_resume_error(sdiodev))
187 return -EIO;
188
189 if (rw) {
190 if (nbytes == 4)
191 sdio_writel(sdiodev->func[func], *word, addr,
192 &err_ret);
193 else if (nbytes == 2)
194 sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
195 addr, &err_ret);
196 else
197 brcmf_err("Invalid nbytes: %d\n", nbytes);
198 } else {
199 if (nbytes == 4)
200 *word = sdio_readl(sdiodev->func[func], addr, &err_ret);
201 else if (nbytes == 2)
202 *word = sdio_readw(sdiodev->func[func], addr,
203 &err_ret) & 0xFFFF;
204 else
205 brcmf_err("Invalid nbytes: %d\n", nbytes);
206 }
207
208 if (err_ret)
209 brcmf_err("Failed to %s word, Err: 0x%08x\n",
210 rw ? "write" : "read", err_ret);
211
212 return err_ret;
213}
214
215
216static int
217brcmf_sdioh_request_data(struct brcmf_sdio_dev *sdiodev, uint write, bool fifo,
218 uint func, uint addr, struct sk_buff *pkt, uint pktlen)
219{
220 int err_ret = 0;
221
222 if ((write) && (!fifo)) {
223 err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
224 ((u8 *) (pkt->data)), pktlen);
225 } else if (write) {
226 err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
227 ((u8 *) (pkt->data)), pktlen);
228 } else if (fifo) {
229 err_ret = sdio_readsb(sdiodev->func[func],
230 ((u8 *) (pkt->data)), addr, pktlen);
231 } else {
232 err_ret = sdio_memcpy_fromio(sdiodev->func[func],
233 ((u8 *) (pkt->data)),
234 addr, pktlen);
235 }
236
237 return err_ret;
238}
239
240
241
242
243
244int
245brcmf_sdioh_request_chain(struct brcmf_sdio_dev *sdiodev, uint fix_inc,
246 uint write, uint func, uint addr,
247 struct sk_buff_head *pktq)
248{
249 bool fifo = (fix_inc == SDIOH_DATA_FIX);
250 u32 SGCount = 0;
251 int err_ret = 0;
252
253 struct sk_buff *pkt;
254
255 brcmf_dbg(TRACE, "Enter\n");
256
257 brcmf_pm_resume_wait(sdiodev, &sdiodev->request_chain_wait);
258 if (brcmf_pm_resume_error(sdiodev))
259 return -EIO;
260
261 skb_queue_walk(pktq, pkt) {
262 uint pkt_len = pkt->len;
263 pkt_len += 3;
264 pkt_len &= 0xFFFFFFFC;
265
266 err_ret = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
267 addr, pkt, pkt_len);
268 if (err_ret) {
269 brcmf_err("%s FAILED %p[%d], addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
270 write ? "TX" : "RX", pkt, SGCount, addr,
271 pkt_len, err_ret);
272 } else {
273 brcmf_dbg(TRACE, "%s xfr'd %p[%d], addr=0x%05x, len=%d\n",
274 write ? "TX" : "RX", pkt, SGCount, addr,
275 pkt_len);
276 }
277 if (!fifo)
278 addr += pkt_len;
279
280 SGCount++;
281 }
282
283 brcmf_dbg(TRACE, "Exit\n");
284 return err_ret;
285}
286
287
288
289
290int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
291 uint fix_inc, uint write, uint func, uint addr,
292 struct sk_buff *pkt)
293{
294 int status;
295 uint pkt_len;
296 bool fifo = (fix_inc == SDIOH_DATA_FIX);
297
298 brcmf_dbg(TRACE, "Enter\n");
299
300 if (pkt == NULL)
301 return -EINVAL;
302 pkt_len = pkt->len;
303
304 brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
305 if (brcmf_pm_resume_error(sdiodev))
306 return -EIO;
307
308 pkt_len += 3;
309 pkt_len &= (uint)~3;
310
311 status = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
312 addr, pkt, pkt_len);
313 if (status) {
314 brcmf_err("%s FAILED %p, addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
315 write ? "TX" : "RX", pkt, addr, pkt_len, status);
316 } else {
317 brcmf_dbg(TRACE, "%s xfr'd %p, addr=0x%05x, len=%d\n",
318 write ? "TX" : "RX", pkt, addr, pkt_len);
319 }
320
321 return status;
322}
323
324static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
325{
326
327 int i, ret;
328 u32 scratch, regdata;
329 __le32 scratch_le;
330 u8 *ptr = (u8 *)&scratch_le;
331
332 for (i = 0; i < 3; i++) {
333 regdata = brcmf_sdio_regrl(sdiodev, regaddr, &ret);
334 if (ret != 0)
335 brcmf_err("Can't read!\n");
336
337 *ptr++ = (u8) regdata;
338 regaddr++;
339 }
340
341
342 scratch = le32_to_cpu(scratch_le);
343 scratch &= 0x0001FFFF;
344 return scratch;
345}
346
347static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
348{
349 int err_ret;
350 u32 fbraddr;
351 u8 func;
352
353 brcmf_dbg(TRACE, "\n");
354
355
356 sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
357 SDIO_CCCR_CIS);
358 brcmf_dbg(INFO, "Card's Common CIS Ptr = 0x%x\n",
359 sdiodev->func_cis_ptr[0]);
360
361
362 for (fbraddr = SDIO_FBR_BASE(1), func = 1;
363 func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
364 sdiodev->func_cis_ptr[func] =
365 brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
366 brcmf_dbg(INFO, "Function %d CIS Ptr = 0x%x\n",
367 func, sdiodev->func_cis_ptr[func]);
368 }
369
370
371 err_ret = sdio_enable_func(sdiodev->func[1]);
372 if (err_ret)
373 brcmf_err("Failed to enable F1 Err: 0x%08x\n", err_ret);
374
375 return false;
376}
377
378
379
380
381int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
382{
383 int err_ret = 0;
384
385 brcmf_dbg(TRACE, "\n");
386
387 sdiodev->num_funcs = 2;
388
389 sdio_claim_host(sdiodev->func[1]);
390
391 err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
392 if (err_ret) {
393 brcmf_err("Failed to set F1 blocksize\n");
394 goto out;
395 }
396
397 err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
398 if (err_ret) {
399 brcmf_err("Failed to set F2 blocksize\n");
400 goto out;
401 }
402
403 brcmf_sdioh_enablefuncs(sdiodev);
404
405out:
406 sdio_release_host(sdiodev->func[1]);
407 brcmf_dbg(TRACE, "Done\n");
408 return err_ret;
409}
410
411void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
412{
413 brcmf_dbg(TRACE, "\n");
414
415
416 sdio_claim_host(sdiodev->func[2]);
417 sdio_disable_func(sdiodev->func[2]);
418 sdio_release_host(sdiodev->func[2]);
419
420
421 sdio_claim_host(sdiodev->func[1]);
422 sdio_disable_func(sdiodev->func[1]);
423 sdio_release_host(sdiodev->func[1]);
424
425}
426
427#ifdef CONFIG_BRCMFMAC_SDIO_OOB
428static int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
429{
430 struct brcmf_sdio_oobirq *oobirq_entry;
431
432 if (list_empty(&oobirq_lh)) {
433 brcmf_err("no valid oob irq resource\n");
434 return -ENXIO;
435 }
436
437 oobirq_entry = list_first_entry(&oobirq_lh, struct brcmf_sdio_oobirq,
438 list);
439
440 sdiodev->irq = oobirq_entry->irq;
441 sdiodev->irq_flags = oobirq_entry->flags;
442 list_del(&oobirq_entry->list);
443 kfree(oobirq_entry);
444
445 return 0;
446}
447#else
448static inline int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
449{
450 return 0;
451}
452#endif
453
454static int brcmf_ops_sdio_probe(struct sdio_func *func,
455 const struct sdio_device_id *id)
456{
457 int err;
458 struct brcmf_sdio_dev *sdiodev;
459 struct brcmf_bus *bus_if;
460
461 brcmf_dbg(TRACE, "Enter\n");
462 brcmf_dbg(TRACE, "Class=%x\n", func->class);
463 brcmf_dbg(TRACE, "sdio vendor ID: 0x%04x\n", func->vendor);
464 brcmf_dbg(TRACE, "sdio device ID: 0x%04x\n", func->device);
465 brcmf_dbg(TRACE, "Function#: %d\n", func->num);
466
467
468 if (func->num == 1)
469 return 0;
470
471
472 if (func->num != 2)
473 return -ENODEV;
474
475 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
476 if (!bus_if)
477 return -ENOMEM;
478 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
479 if (!sdiodev) {
480 kfree(bus_if);
481 return -ENOMEM;
482 }
483
484 sdiodev->func[0] = func->card->sdio_func[0];
485 sdiodev->func[1] = func->card->sdio_func[0];
486 sdiodev->func[2] = func;
487
488 sdiodev->bus_if = bus_if;
489 bus_if->bus_priv.sdio = sdiodev;
490 bus_if->align = BRCMF_SDALIGN;
491 dev_set_drvdata(&func->dev, bus_if);
492 dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
493 sdiodev->dev = &sdiodev->func[1]->dev;
494
495 atomic_set(&sdiodev->suspend, false);
496 init_waitqueue_head(&sdiodev->request_byte_wait);
497 init_waitqueue_head(&sdiodev->request_word_wait);
498 init_waitqueue_head(&sdiodev->request_chain_wait);
499 init_waitqueue_head(&sdiodev->request_buffer_wait);
500 err = brcmf_sdio_getintrcfg(sdiodev);
501 if (err)
502 goto fail;
503
504 brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_probe...\n");
505 err = brcmf_sdio_probe(sdiodev);
506 if (err) {
507 brcmf_err("F2 error, probe failed %d...\n", err);
508 goto fail;
509 }
510 brcmf_dbg(TRACE, "F2 init completed...\n");
511 return 0;
512
513fail:
514 dev_set_drvdata(&func->dev, NULL);
515 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
516 kfree(sdiodev);
517 kfree(bus_if);
518 return err;
519}
520
521static void brcmf_ops_sdio_remove(struct sdio_func *func)
522{
523 struct brcmf_bus *bus_if;
524 struct brcmf_sdio_dev *sdiodev;
525
526 brcmf_dbg(TRACE, "Enter\n");
527 brcmf_dbg(TRACE, "sdio vendor ID: 0x%04x\n", func->vendor);
528 brcmf_dbg(TRACE, "sdio device ID: 0x%04x\n", func->device);
529 brcmf_dbg(TRACE, "Function: %d\n", func->num);
530
531 if (func->num != 1 && func->num != 2)
532 return;
533
534 bus_if = dev_get_drvdata(&func->dev);
535 if (bus_if) {
536 sdiodev = bus_if->bus_priv.sdio;
537 brcmf_sdio_remove(sdiodev);
538
539 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
540 dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
541
542 kfree(bus_if);
543 kfree(sdiodev);
544 }
545
546 brcmf_dbg(TRACE, "Exit\n");
547}
548
549#ifdef CONFIG_PM_SLEEP
550static int brcmf_sdio_suspend(struct device *dev)
551{
552 mmc_pm_flag_t sdio_flags;
553 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
554 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
555 int ret = 0;
556
557 brcmf_dbg(TRACE, "\n");
558
559 atomic_set(&sdiodev->suspend, true);
560
561 sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
562 if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
563 brcmf_err("Host can't keep power while suspended\n");
564 return -EINVAL;
565 }
566
567 ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
568 if (ret) {
569 brcmf_err("Failed to set pm_flags\n");
570 return ret;
571 }
572
573 brcmf_sdio_wdtmr_enable(sdiodev, false);
574
575 return ret;
576}
577
578static int brcmf_sdio_resume(struct device *dev)
579{
580 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
581 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
582
583 brcmf_sdio_wdtmr_enable(sdiodev, true);
584 atomic_set(&sdiodev->suspend, false);
585 return 0;
586}
587
588static const struct dev_pm_ops brcmf_sdio_pm_ops = {
589 .suspend = brcmf_sdio_suspend,
590 .resume = brcmf_sdio_resume,
591};
592#endif
593
594static struct sdio_driver brcmf_sdmmc_driver = {
595 .probe = brcmf_ops_sdio_probe,
596 .remove = brcmf_ops_sdio_remove,
597 .name = "brcmfmac",
598 .id_table = brcmf_sdmmc_ids,
599#ifdef CONFIG_PM_SLEEP
600 .drv = {
601 .pm = &brcmf_sdio_pm_ops,
602 },
603#endif
604};
605
606#ifdef CONFIG_BRCMFMAC_SDIO_OOB
607static int brcmf_sdio_pd_probe(struct platform_device *pdev)
608{
609 struct resource *res;
610 struct brcmf_sdio_oobirq *oobirq_entry;
611 int i, ret;
612
613 INIT_LIST_HEAD(&oobirq_lh);
614
615 for (i = 0; ; i++) {
616 res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
617 if (!res)
618 break;
619
620 oobirq_entry = kzalloc(sizeof(struct brcmf_sdio_oobirq),
621 GFP_KERNEL);
622 if (!oobirq_entry)
623 return -ENOMEM;
624 oobirq_entry->irq = res->start;
625 oobirq_entry->flags = res->flags & IRQF_TRIGGER_MASK;
626 list_add_tail(&oobirq_entry->list, &oobirq_lh);
627 }
628 if (i == 0)
629 return -ENXIO;
630
631 ret = sdio_register_driver(&brcmf_sdmmc_driver);
632
633 if (ret)
634 brcmf_err("sdio_register_driver failed: %d\n", ret);
635
636 return ret;
637}
638
639static struct platform_driver brcmf_sdio_pd = {
640 .probe = brcmf_sdio_pd_probe,
641 .driver = {
642 .name = "brcmf_sdio_pd"
643 }
644};
645
646void brcmf_sdio_exit(void)
647{
648 brcmf_dbg(TRACE, "Enter\n");
649
650 sdio_unregister_driver(&brcmf_sdmmc_driver);
651
652 platform_driver_unregister(&brcmf_sdio_pd);
653}
654
655void brcmf_sdio_init(void)
656{
657 int ret;
658
659 brcmf_dbg(TRACE, "Enter\n");
660
661 ret = platform_driver_register(&brcmf_sdio_pd);
662
663 if (ret)
664 brcmf_err("platform_driver_register failed: %d\n", ret);
665}
666#else
667void brcmf_sdio_exit(void)
668{
669 brcmf_dbg(TRACE, "Enter\n");
670
671 sdio_unregister_driver(&brcmf_sdmmc_driver);
672}
673
674void brcmf_sdio_init(void)
675{
676 int ret;
677
678 brcmf_dbg(TRACE, "Enter\n");
679
680 ret = sdio_register_driver(&brcmf_sdmmc_driver);
681
682 if (ret)
683 brcmf_err("sdio_register_driver failed: %d\n", ret);
684}
685#endif
686
