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17#include <linux/module.h>
18#include <linux/mmc/card.h>
19#include <linux/mmc/mmc.h>
20#include <linux/mmc/host.h>
21#include <linux/mmc/sdio_func.h>
22#include <linux/mmc/sdio_ids.h>
23#include <linux/mmc/sdio.h>
24#include <linux/mmc/sd.h>
25#include "htc_hif.h"
26#include "hif-ops.h"
27#include "target.h"
28#include "debug.h"
29#include "cfg80211.h"
30
31struct ath6kl_sdio {
32 struct sdio_func *func;
33
34 spinlock_t lock;
35
36
37 struct list_head bus_req_freeq;
38
39
40 struct bus_request bus_req[BUS_REQUEST_MAX_NUM];
41
42 struct ath6kl *ar;
43 u8 *dma_buffer;
44
45
46 struct list_head scat_req;
47
48 spinlock_t scat_lock;
49 bool is_disabled;
50 atomic_t irq_handling;
51 const struct sdio_device_id *id;
52 struct work_struct wr_async_work;
53 struct list_head wr_asyncq;
54 spinlock_t wr_async_lock;
55};
56
57#define CMD53_ARG_READ 0
58#define CMD53_ARG_WRITE 1
59#define CMD53_ARG_BLOCK_BASIS 1
60#define CMD53_ARG_FIXED_ADDRESS 0
61#define CMD53_ARG_INCR_ADDRESS 1
62
63static inline struct ath6kl_sdio *ath6kl_sdio_priv(struct ath6kl *ar)
64{
65 return ar->hif_priv;
66}
67
68
69
70
71
72
73
74static inline bool buf_needs_bounce(u8 *buf)
75{
76 return ((unsigned long) buf & 0x3) || !virt_addr_valid(buf);
77}
78
79static void ath6kl_sdio_set_mbox_info(struct ath6kl *ar)
80{
81 struct ath6kl_mbox_info *mbox_info = &ar->mbox_info;
82
83
84 mbox_info->htc_addr = HIF_MBOX_BASE_ADDR;
85 mbox_info->htc_ext_addr = HIF_MBOX0_EXT_BASE_ADDR;
86 mbox_info->htc_ext_sz = HIF_MBOX0_EXT_WIDTH;
87 mbox_info->block_size = HIF_MBOX_BLOCK_SIZE;
88 mbox_info->gmbox_addr = HIF_GMBOX_BASE_ADDR;
89 mbox_info->gmbox_sz = HIF_GMBOX_WIDTH;
90}
91
92static inline void ath6kl_sdio_set_cmd53_arg(u32 *arg, u8 rw, u8 func,
93 u8 mode, u8 opcode, u32 addr,
94 u16 blksz)
95{
96 *arg = (((rw & 1) << 31) |
97 ((func & 0x7) << 28) |
98 ((mode & 1) << 27) |
99 ((opcode & 1) << 26) |
100 ((addr & 0x1FFFF) << 9) |
101 (blksz & 0x1FF));
102}
103
104static inline void ath6kl_sdio_set_cmd52_arg(u32 *arg, u8 write, u8 raw,
105 unsigned int address,
106 unsigned char val)
107{
108 const u8 func = 0;
109
110 *arg = ((write & 1) << 31) |
111 ((func & 0x7) << 28) |
112 ((raw & 1) << 27) |
113 (1 << 26) |
114 ((address & 0x1FFFF) << 9) |
115 (1 << 8) |
116 (val & 0xFF);
117}
118
119static int ath6kl_sdio_func0_cmd52_wr_byte(struct mmc_card *card,
120 unsigned int address,
121 unsigned char byte)
122{
123 struct mmc_command io_cmd;
124
125 memset(&io_cmd, 0, sizeof(io_cmd));
126 ath6kl_sdio_set_cmd52_arg(&io_cmd.arg, 1, 0, address, byte);
127 io_cmd.opcode = SD_IO_RW_DIRECT;
128 io_cmd.flags = MMC_RSP_R5 | MMC_CMD_AC;
129
130 return mmc_wait_for_cmd(card->host, &io_cmd, 0);
131}
132
133static int ath6kl_sdio_io(struct sdio_func *func, u32 request, u32 addr,
134 u8 *buf, u32 len)
135{
136 int ret = 0;
137
138 if (request & HIF_WRITE) {
139
140 if (addr >= HIF_MBOX_BASE_ADDR &&
141 addr <= HIF_MBOX_END_ADDR)
142 addr += (HIF_MBOX_WIDTH - len);
143
144
145 if (addr == HIF_MBOX0_EXT_BASE_ADDR)
146 addr += HIF_MBOX0_EXT_WIDTH - len;
147
148 if (request & HIF_FIXED_ADDRESS)
149 ret = sdio_writesb(func, addr, buf, len);
150 else
151 ret = sdio_memcpy_toio(func, addr, buf, len);
152 } else {
153 if (request & HIF_FIXED_ADDRESS)
154 ret = sdio_readsb(func, buf, addr, len);
155 else
156 ret = sdio_memcpy_fromio(func, buf, addr, len);
157 }
158
159 ath6kl_dbg(ATH6KL_DBG_SDIO, "%s addr 0x%x%s buf 0x%p len %d\n",
160 request & HIF_WRITE ? "wr" : "rd", addr,
161 request & HIF_FIXED_ADDRESS ? " (fixed)" : "", buf, len);
162 ath6kl_dbg_dump(ATH6KL_DBG_SDIO_DUMP, NULL, "sdio ", buf, len);
163
164 return ret;
165}
166
167static struct bus_request *ath6kl_sdio_alloc_busreq(struct ath6kl_sdio *ar_sdio)
168{
169 struct bus_request *bus_req;
170 unsigned long flag;
171
172 spin_lock_irqsave(&ar_sdio->lock, flag);
173
174 if (list_empty(&ar_sdio->bus_req_freeq)) {
175 spin_unlock_irqrestore(&ar_sdio->lock, flag);
176 return NULL;
177 }
178
179 bus_req = list_first_entry(&ar_sdio->bus_req_freeq,
180 struct bus_request, list);
181 list_del(&bus_req->list);
182
183 spin_unlock_irqrestore(&ar_sdio->lock, flag);
184 ath6kl_dbg(ATH6KL_DBG_SCATTER, "%s: bus request 0x%p\n",
185 __func__, bus_req);
186
187 return bus_req;
188}
189
190static void ath6kl_sdio_free_bus_req(struct ath6kl_sdio *ar_sdio,
191 struct bus_request *bus_req)
192{
193 unsigned long flag;
194
195 ath6kl_dbg(ATH6KL_DBG_SCATTER, "%s: bus request 0x%p\n",
196 __func__, bus_req);
197
198 spin_lock_irqsave(&ar_sdio->lock, flag);
199 list_add_tail(&bus_req->list, &ar_sdio->bus_req_freeq);
200 spin_unlock_irqrestore(&ar_sdio->lock, flag);
201}
202
203static void ath6kl_sdio_setup_scat_data(struct hif_scatter_req *scat_req,
204 struct mmc_data *data)
205{
206 struct scatterlist *sg;
207 int i;
208
209 data->blksz = HIF_MBOX_BLOCK_SIZE;
210 data->blocks = scat_req->len / HIF_MBOX_BLOCK_SIZE;
211
212 ath6kl_dbg(ATH6KL_DBG_SCATTER,
213 "hif-scatter: (%s) addr: 0x%X, (block len: %d, block count: %d) , (tot:%d,sg:%d)\n",
214 (scat_req->req & HIF_WRITE) ? "WR" : "RD", scat_req->addr,
215 data->blksz, data->blocks, scat_req->len,
216 scat_req->scat_entries);
217
218 data->flags = (scat_req->req & HIF_WRITE) ? MMC_DATA_WRITE :
219 MMC_DATA_READ;
220
221
222 sg = scat_req->sgentries;
223 sg_init_table(sg, scat_req->scat_entries);
224
225
226 for (i = 0; i < scat_req->scat_entries; i++, sg++) {
227 ath6kl_dbg(ATH6KL_DBG_SCATTER, "%d: addr:0x%p, len:%d\n",
228 i, scat_req->scat_list[i].buf,
229 scat_req->scat_list[i].len);
230
231 sg_set_buf(sg, scat_req->scat_list[i].buf,
232 scat_req->scat_list[i].len);
233 }
234
235
236 data->sg = scat_req->sgentries;
237 data->sg_len = scat_req->scat_entries;
238}
239
240static int ath6kl_sdio_scat_rw(struct ath6kl_sdio *ar_sdio,
241 struct bus_request *req)
242{
243 struct mmc_request mmc_req;
244 struct mmc_command cmd;
245 struct mmc_data data;
246 struct hif_scatter_req *scat_req;
247 u8 opcode, rw;
248 int status, len;
249
250 scat_req = req->scat_req;
251
252 if (scat_req->virt_scat) {
253 len = scat_req->len;
254 if (scat_req->req & HIF_BLOCK_BASIS)
255 len = round_down(len, HIF_MBOX_BLOCK_SIZE);
256
257 status = ath6kl_sdio_io(ar_sdio->func, scat_req->req,
258 scat_req->addr, scat_req->virt_dma_buf,
259 len);
260 goto scat_complete;
261 }
262
263 memset(&mmc_req, 0, sizeof(struct mmc_request));
264 memset(&cmd, 0, sizeof(struct mmc_command));
265 memset(&data, 0, sizeof(struct mmc_data));
266
267 ath6kl_sdio_setup_scat_data(scat_req, &data);
268
269 opcode = (scat_req->req & HIF_FIXED_ADDRESS) ?
270 CMD53_ARG_FIXED_ADDRESS : CMD53_ARG_INCR_ADDRESS;
271
272 rw = (scat_req->req & HIF_WRITE) ? CMD53_ARG_WRITE : CMD53_ARG_READ;
273
274
275 if (scat_req->req & HIF_WRITE) {
276 if (scat_req->addr == HIF_MBOX_BASE_ADDR)
277 scat_req->addr += HIF_MBOX_WIDTH - scat_req->len;
278 else
279
280 scat_req->addr += HIF_MBOX0_EXT_WIDTH - scat_req->len;
281 }
282
283
284 ath6kl_sdio_set_cmd53_arg(&cmd.arg, rw, ar_sdio->func->num,
285 CMD53_ARG_BLOCK_BASIS, opcode, scat_req->addr,
286 data.blocks);
287
288 cmd.opcode = SD_IO_RW_EXTENDED;
289 cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
290
291 mmc_req.cmd = &cmd;
292 mmc_req.data = &data;
293
294 mmc_set_data_timeout(&data, ar_sdio->func->card);
295
296 mmc_wait_for_req(ar_sdio->func->card->host, &mmc_req);
297
298 status = cmd.error ? cmd.error : data.error;
299
300scat_complete:
301 scat_req->status = status;
302
303 if (scat_req->status)
304 ath6kl_err("Scatter write request failed:%d\n",
305 scat_req->status);
306
307 if (scat_req->req & HIF_ASYNCHRONOUS)
308 scat_req->complete(ar_sdio->ar->htc_target, scat_req);
309
310 return status;
311}
312
313static int ath6kl_sdio_alloc_prep_scat_req(struct ath6kl_sdio *ar_sdio,
314 int n_scat_entry, int n_scat_req,
315 bool virt_scat)
316{
317 struct hif_scatter_req *s_req;
318 struct bus_request *bus_req;
319 int i, scat_req_sz, scat_list_sz, sg_sz, buf_sz;
320 u8 *virt_buf;
321
322 scat_list_sz = (n_scat_entry - 1) * sizeof(struct hif_scatter_item);
323 scat_req_sz = sizeof(*s_req) + scat_list_sz;
324
325 if (!virt_scat)
326 sg_sz = sizeof(struct scatterlist) * n_scat_entry;
327 else
328 buf_sz = 2 * L1_CACHE_BYTES +
329 ATH6KL_MAX_TRANSFER_SIZE_PER_SCATTER;
330
331 for (i = 0; i < n_scat_req; i++) {
332
333 s_req = kzalloc(scat_req_sz, GFP_KERNEL);
334 if (!s_req)
335 return -ENOMEM;
336
337 if (virt_scat) {
338 virt_buf = kzalloc(buf_sz, GFP_KERNEL);
339 if (!virt_buf) {
340 kfree(s_req);
341 return -ENOMEM;
342 }
343
344 s_req->virt_dma_buf =
345 (u8 *)L1_CACHE_ALIGN((unsigned long)virt_buf);
346 } else {
347
348 s_req->sgentries = kzalloc(sg_sz, GFP_KERNEL);
349
350 if (!s_req->sgentries) {
351 kfree(s_req);
352 return -ENOMEM;
353 }
354 }
355
356
357 bus_req = ath6kl_sdio_alloc_busreq(ar_sdio);
358 if (!bus_req) {
359 kfree(s_req->sgentries);
360 kfree(s_req->virt_dma_buf);
361 kfree(s_req);
362 return -ENOMEM;
363 }
364
365
366 bus_req->scat_req = s_req;
367 s_req->busrequest = bus_req;
368
369 s_req->virt_scat = virt_scat;
370
371
372 hif_scatter_req_add(ar_sdio->ar, s_req);
373 }
374
375 return 0;
376}
377
378static int ath6kl_sdio_read_write_sync(struct ath6kl *ar, u32 addr, u8 *buf,
379 u32 len, u32 request)
380{
381 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
382 u8 *tbuf = NULL;
383 int ret;
384 bool bounced = false;
385
386 if (request & HIF_BLOCK_BASIS)
387 len = round_down(len, HIF_MBOX_BLOCK_SIZE);
388
389 if (buf_needs_bounce(buf)) {
390 if (!ar_sdio->dma_buffer)
391 return -ENOMEM;
392 tbuf = ar_sdio->dma_buffer;
393 memcpy(tbuf, buf, len);
394 bounced = true;
395 } else
396 tbuf = buf;
397
398 sdio_claim_host(ar_sdio->func);
399 ret = ath6kl_sdio_io(ar_sdio->func, request, addr, tbuf, len);
400 if ((request & HIF_READ) && bounced)
401 memcpy(buf, tbuf, len);
402 sdio_release_host(ar_sdio->func);
403
404 return ret;
405}
406
407static void __ath6kl_sdio_write_async(struct ath6kl_sdio *ar_sdio,
408 struct bus_request *req)
409{
410 if (req->scat_req)
411 ath6kl_sdio_scat_rw(ar_sdio, req);
412 else {
413 void *context;
414 int status;
415
416 status = ath6kl_sdio_read_write_sync(ar_sdio->ar, req->address,
417 req->buffer, req->length,
418 req->request);
419 context = req->packet;
420 ath6kl_sdio_free_bus_req(ar_sdio, req);
421 ath6kldev_rw_comp_handler(context, status);
422 }
423}
424
425static void ath6kl_sdio_write_async_work(struct work_struct *work)
426{
427 struct ath6kl_sdio *ar_sdio;
428 unsigned long flags;
429 struct bus_request *req, *tmp_req;
430
431 ar_sdio = container_of(work, struct ath6kl_sdio, wr_async_work);
432 sdio_claim_host(ar_sdio->func);
433
434 spin_lock_irqsave(&ar_sdio->wr_async_lock, flags);
435 list_for_each_entry_safe(req, tmp_req, &ar_sdio->wr_asyncq, list) {
436 list_del(&req->list);
437 spin_unlock_irqrestore(&ar_sdio->wr_async_lock, flags);
438 __ath6kl_sdio_write_async(ar_sdio, req);
439 spin_lock_irqsave(&ar_sdio->wr_async_lock, flags);
440 }
441 spin_unlock_irqrestore(&ar_sdio->wr_async_lock, flags);
442
443 sdio_release_host(ar_sdio->func);
444}
445
446static void ath6kl_sdio_irq_handler(struct sdio_func *func)
447{
448 int status;
449 struct ath6kl_sdio *ar_sdio;
450
451 ath6kl_dbg(ATH6KL_DBG_SDIO, "irq\n");
452
453 ar_sdio = sdio_get_drvdata(func);
454 atomic_set(&ar_sdio->irq_handling, 1);
455
456
457
458
459
460 sdio_release_host(ar_sdio->func);
461
462 status = ath6kldev_intr_bh_handler(ar_sdio->ar);
463 sdio_claim_host(ar_sdio->func);
464 atomic_set(&ar_sdio->irq_handling, 0);
465 WARN_ON(status && status != -ECANCELED);
466}
467
468static int ath6kl_sdio_power_on(struct ath6kl_sdio *ar_sdio)
469{
470 struct sdio_func *func = ar_sdio->func;
471 int ret = 0;
472
473 if (!ar_sdio->is_disabled)
474 return 0;
475
476 sdio_claim_host(func);
477
478 ret = sdio_enable_func(func);
479 if (ret) {
480 ath6kl_err("Unable to enable sdio func: %d)\n", ret);
481 sdio_release_host(func);
482 return ret;
483 }
484
485 sdio_release_host(func);
486
487
488
489
490
491 msleep(10);
492
493 ar_sdio->is_disabled = false;
494
495 return ret;
496}
497
498static int ath6kl_sdio_power_off(struct ath6kl_sdio *ar_sdio)
499{
500 int ret;
501
502 if (ar_sdio->is_disabled)
503 return 0;
504
505
506 sdio_claim_host(ar_sdio->func);
507 ret = sdio_disable_func(ar_sdio->func);
508 sdio_release_host(ar_sdio->func);
509
510 if (ret)
511 return ret;
512
513 ar_sdio->is_disabled = true;
514
515 return ret;
516}
517
518static int ath6kl_sdio_write_async(struct ath6kl *ar, u32 address, u8 *buffer,
519 u32 length, u32 request,
520 struct htc_packet *packet)
521{
522 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
523 struct bus_request *bus_req;
524 unsigned long flags;
525
526 bus_req = ath6kl_sdio_alloc_busreq(ar_sdio);
527
528 if (!bus_req)
529 return -ENOMEM;
530
531 bus_req->address = address;
532 bus_req->buffer = buffer;
533 bus_req->length = length;
534 bus_req->request = request;
535 bus_req->packet = packet;
536
537 spin_lock_irqsave(&ar_sdio->wr_async_lock, flags);
538 list_add_tail(&bus_req->list, &ar_sdio->wr_asyncq);
539 spin_unlock_irqrestore(&ar_sdio->wr_async_lock, flags);
540 queue_work(ar->ath6kl_wq, &ar_sdio->wr_async_work);
541
542 return 0;
543}
544
545static void ath6kl_sdio_irq_enable(struct ath6kl *ar)
546{
547 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
548 int ret;
549
550 sdio_claim_host(ar_sdio->func);
551
552
553 ret = sdio_claim_irq(ar_sdio->func, ath6kl_sdio_irq_handler);
554 if (ret)
555 ath6kl_err("Failed to claim sdio irq: %d\n", ret);
556
557 sdio_release_host(ar_sdio->func);
558}
559
560static void ath6kl_sdio_irq_disable(struct ath6kl *ar)
561{
562 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
563 int ret;
564
565 sdio_claim_host(ar_sdio->func);
566
567
568 while (atomic_read(&ar_sdio->irq_handling)) {
569 sdio_release_host(ar_sdio->func);
570 schedule_timeout(HZ / 10);
571 sdio_claim_host(ar_sdio->func);
572 }
573
574 ret = sdio_release_irq(ar_sdio->func);
575 if (ret)
576 ath6kl_err("Failed to release sdio irq: %d\n", ret);
577
578 sdio_release_host(ar_sdio->func);
579}
580
581static struct hif_scatter_req *ath6kl_sdio_scatter_req_get(struct ath6kl *ar)
582{
583 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
584 struct hif_scatter_req *node = NULL;
585 unsigned long flag;
586
587 spin_lock_irqsave(&ar_sdio->scat_lock, flag);
588
589 if (!list_empty(&ar_sdio->scat_req)) {
590 node = list_first_entry(&ar_sdio->scat_req,
591 struct hif_scatter_req, list);
592 list_del(&node->list);
593 }
594
595 spin_unlock_irqrestore(&ar_sdio->scat_lock, flag);
596
597 return node;
598}
599
600static void ath6kl_sdio_scatter_req_add(struct ath6kl *ar,
601 struct hif_scatter_req *s_req)
602{
603 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
604 unsigned long flag;
605
606 spin_lock_irqsave(&ar_sdio->scat_lock, flag);
607
608 list_add_tail(&s_req->list, &ar_sdio->scat_req);
609
610 spin_unlock_irqrestore(&ar_sdio->scat_lock, flag);
611
612}
613
614
615static int ath6kl_sdio_async_rw_scatter(struct ath6kl *ar,
616 struct hif_scatter_req *scat_req)
617{
618 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
619 u32 request = scat_req->req;
620 int status = 0;
621 unsigned long flags;
622
623 if (!scat_req->len)
624 return -EINVAL;
625
626 ath6kl_dbg(ATH6KL_DBG_SCATTER,
627 "hif-scatter: total len: %d scatter entries: %d\n",
628 scat_req->len, scat_req->scat_entries);
629
630 if (request & HIF_SYNCHRONOUS) {
631 sdio_claim_host(ar_sdio->func);
632 status = ath6kl_sdio_scat_rw(ar_sdio, scat_req->busrequest);
633 sdio_release_host(ar_sdio->func);
634 } else {
635 spin_lock_irqsave(&ar_sdio->wr_async_lock, flags);
636 list_add_tail(&scat_req->busrequest->list, &ar_sdio->wr_asyncq);
637 spin_unlock_irqrestore(&ar_sdio->wr_async_lock, flags);
638 queue_work(ar->ath6kl_wq, &ar_sdio->wr_async_work);
639 }
640
641 return status;
642}
643
644
645static void ath6kl_sdio_cleanup_scatter(struct ath6kl *ar)
646{
647 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
648 struct hif_scatter_req *s_req, *tmp_req;
649 unsigned long flag;
650
651
652 spin_lock_irqsave(&ar_sdio->scat_lock, flag);
653 list_for_each_entry_safe(s_req, tmp_req, &ar_sdio->scat_req, list) {
654 list_del(&s_req->list);
655 spin_unlock_irqrestore(&ar_sdio->scat_lock, flag);
656
657 if (s_req->busrequest)
658 ath6kl_sdio_free_bus_req(ar_sdio, s_req->busrequest);
659 kfree(s_req->virt_dma_buf);
660 kfree(s_req->sgentries);
661 kfree(s_req);
662
663 spin_lock_irqsave(&ar_sdio->scat_lock, flag);
664 }
665 spin_unlock_irqrestore(&ar_sdio->scat_lock, flag);
666}
667
668
669static int ath6kl_sdio_enable_scatter(struct ath6kl *ar)
670{
671 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
672 struct htc_target *target = ar->htc_target;
673 int ret;
674 bool virt_scat = false;
675
676
677 if (ar_sdio->func->card->host->max_segs < MAX_SCATTER_ENTRIES_PER_REQ) {
678 ath6kl_err("host only supports scatter of :%d entries, need: %d\n",
679 ar_sdio->func->card->host->max_segs,
680 MAX_SCATTER_ENTRIES_PER_REQ);
681 virt_scat = true;
682 }
683
684 if (!virt_scat) {
685 ret = ath6kl_sdio_alloc_prep_scat_req(ar_sdio,
686 MAX_SCATTER_ENTRIES_PER_REQ,
687 MAX_SCATTER_REQUESTS, virt_scat);
688
689 if (!ret) {
690 ath6kl_dbg(ATH6KL_DBG_SCATTER,
691 "hif-scatter enabled: max scatter req : %d entries: %d\n",
692 MAX_SCATTER_REQUESTS,
693 MAX_SCATTER_ENTRIES_PER_REQ);
694
695 target->max_scat_entries = MAX_SCATTER_ENTRIES_PER_REQ;
696 target->max_xfer_szper_scatreq =
697 MAX_SCATTER_REQ_TRANSFER_SIZE;
698 } else {
699 ath6kl_sdio_cleanup_scatter(ar);
700 ath6kl_warn("hif scatter resource setup failed, trying virtual scatter method\n");
701 }
702 }
703
704 if (virt_scat || ret) {
705 ret = ath6kl_sdio_alloc_prep_scat_req(ar_sdio,
706 ATH6KL_SCATTER_ENTRIES_PER_REQ,
707 ATH6KL_SCATTER_REQS, virt_scat);
708
709 if (ret) {
710 ath6kl_err("failed to alloc virtual scatter resources !\n");
711 ath6kl_sdio_cleanup_scatter(ar);
712 return ret;
713 }
714
715 ath6kl_dbg(ATH6KL_DBG_SCATTER,
716 "Vitual scatter enabled, max_scat_req:%d, entries:%d\n",
717 ATH6KL_SCATTER_REQS, ATH6KL_SCATTER_ENTRIES_PER_REQ);
718
719 target->max_scat_entries = ATH6KL_SCATTER_ENTRIES_PER_REQ;
720 target->max_xfer_szper_scatreq =
721 ATH6KL_MAX_TRANSFER_SIZE_PER_SCATTER;
722 }
723
724 return 0;
725}
726
727static int ath6kl_sdio_suspend(struct ath6kl *ar)
728{
729 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
730 struct sdio_func *func = ar_sdio->func;
731 mmc_pm_flag_t flags;
732 int ret;
733
734 flags = sdio_get_host_pm_caps(func);
735
736 if (!(flags & MMC_PM_KEEP_POWER))
737
738 ath6kl_dbg(ATH6KL_DBG_SDIO,
739 "func %d doesn't support MMC_PM_KEEP_POWER\n",
740 func->num);
741 return -EINVAL;
742
743 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
744 if (ret) {
745 printk(KERN_ERR "ath6kl: set sdio pm flags failed: %d\n",
746 ret);
747 return ret;
748 }
749
750 ath6kl_deep_sleep_enable(ar);
751
752 return 0;
753}
754
755static const struct ath6kl_hif_ops ath6kl_sdio_ops = {
756 .read_write_sync = ath6kl_sdio_read_write_sync,
757 .write_async = ath6kl_sdio_write_async,
758 .irq_enable = ath6kl_sdio_irq_enable,
759 .irq_disable = ath6kl_sdio_irq_disable,
760 .scatter_req_get = ath6kl_sdio_scatter_req_get,
761 .scatter_req_add = ath6kl_sdio_scatter_req_add,
762 .enable_scatter = ath6kl_sdio_enable_scatter,
763 .scat_req_rw = ath6kl_sdio_async_rw_scatter,
764 .cleanup_scatter = ath6kl_sdio_cleanup_scatter,
765 .suspend = ath6kl_sdio_suspend,
766};
767
768static int ath6kl_sdio_probe(struct sdio_func *func,
769 const struct sdio_device_id *id)
770{
771 int ret;
772 struct ath6kl_sdio *ar_sdio;
773 struct ath6kl *ar;
774 int count;
775
776 ath6kl_dbg(ATH6KL_DBG_SDIO,
777 "new func %d vendor 0x%x device 0x%x block 0x%x/0x%x\n",
778 func->num, func->vendor, func->device,
779 func->max_blksize, func->cur_blksize);
780
781 ar_sdio = kzalloc(sizeof(struct ath6kl_sdio), GFP_KERNEL);
782 if (!ar_sdio)
783 return -ENOMEM;
784
785 ar_sdio->dma_buffer = kzalloc(HIF_DMA_BUFFER_SIZE, GFP_KERNEL);
786 if (!ar_sdio->dma_buffer) {
787 ret = -ENOMEM;
788 goto err_hif;
789 }
790
791 ar_sdio->func = func;
792 sdio_set_drvdata(func, ar_sdio);
793
794 ar_sdio->id = id;
795 ar_sdio->is_disabled = true;
796
797 spin_lock_init(&ar_sdio->lock);
798 spin_lock_init(&ar_sdio->scat_lock);
799 spin_lock_init(&ar_sdio->wr_async_lock);
800
801 INIT_LIST_HEAD(&ar_sdio->scat_req);
802 INIT_LIST_HEAD(&ar_sdio->bus_req_freeq);
803 INIT_LIST_HEAD(&ar_sdio->wr_asyncq);
804
805 INIT_WORK(&ar_sdio->wr_async_work, ath6kl_sdio_write_async_work);
806
807 for (count = 0; count < BUS_REQUEST_MAX_NUM; count++)
808 ath6kl_sdio_free_bus_req(ar_sdio, &ar_sdio->bus_req[count]);
809
810 ar = ath6kl_core_alloc(&ar_sdio->func->dev);
811 if (!ar) {
812 ath6kl_err("Failed to alloc ath6kl core\n");
813 ret = -ENOMEM;
814 goto err_dma;
815 }
816
817 ar_sdio->ar = ar;
818 ar->hif_priv = ar_sdio;
819 ar->hif_ops = &ath6kl_sdio_ops;
820
821 ath6kl_sdio_set_mbox_info(ar);
822
823 sdio_claim_host(func);
824
825 if ((ar_sdio->id->device & MANUFACTURER_ID_ATH6KL_BASE_MASK) >=
826 MANUFACTURER_ID_AR6003_BASE) {
827
828 ret = ath6kl_sdio_func0_cmd52_wr_byte(func->card,
829 CCCR_SDIO_IRQ_MODE_REG,
830 SDIO_IRQ_MODE_ASYNC_4BIT_IRQ);
831 if (ret) {
832 ath6kl_err("Failed to enable 4-bit async irq mode %d\n",
833 ret);
834 sdio_release_host(func);
835 goto err_cfg80211;
836 }
837
838 ath6kl_dbg(ATH6KL_DBG_SDIO, "4-bit async irq mode enabled\n");
839 }
840
841
842 func->enable_timeout = 100;
843
844 sdio_release_host(func);
845
846 ret = ath6kl_sdio_power_on(ar_sdio);
847 if (ret)
848 goto err_cfg80211;
849
850 sdio_claim_host(func);
851
852 ret = sdio_set_block_size(func, HIF_MBOX_BLOCK_SIZE);
853 if (ret) {
854 ath6kl_err("Set sdio block size %d failed: %d)\n",
855 HIF_MBOX_BLOCK_SIZE, ret);
856 sdio_release_host(func);
857 goto err_off;
858 }
859
860 sdio_release_host(func);
861
862 ret = ath6kl_core_init(ar);
863 if (ret) {
864 ath6kl_err("Failed to init ath6kl core\n");
865 goto err_off;
866 }
867
868 return ret;
869
870err_off:
871 ath6kl_sdio_power_off(ar_sdio);
872err_cfg80211:
873 ath6kl_cfg80211_deinit(ar_sdio->ar);
874err_dma:
875 kfree(ar_sdio->dma_buffer);
876err_hif:
877 kfree(ar_sdio);
878
879 return ret;
880}
881
882static void ath6kl_sdio_remove(struct sdio_func *func)
883{
884 struct ath6kl_sdio *ar_sdio;
885
886 ath6kl_dbg(ATH6KL_DBG_SDIO,
887 "removed func %d vendor 0x%x device 0x%x\n",
888 func->num, func->vendor, func->device);
889
890 ar_sdio = sdio_get_drvdata(func);
891
892 ath6kl_stop_txrx(ar_sdio->ar);
893 cancel_work_sync(&ar_sdio->wr_async_work);
894
895 ath6kl_unavail_ev(ar_sdio->ar);
896
897 ath6kl_sdio_power_off(ar_sdio);
898
899 kfree(ar_sdio->dma_buffer);
900 kfree(ar_sdio);
901}
902
903static const struct sdio_device_id ath6kl_sdio_devices[] = {
904 {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6003_BASE | 0x0))},
905 {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6003_BASE | 0x1))},
906 {},
907};
908
909MODULE_DEVICE_TABLE(sdio, ath6kl_sdio_devices);
910
911static struct sdio_driver ath6kl_sdio_driver = {
912 .name = "ath6kl_sdio",
913 .id_table = ath6kl_sdio_devices,
914 .probe = ath6kl_sdio_probe,
915 .remove = ath6kl_sdio_remove,
916};
917
918static int __init ath6kl_sdio_init(void)
919{
920 int ret;
921
922 ret = sdio_register_driver(&ath6kl_sdio_driver);
923 if (ret)
924 ath6kl_err("sdio driver registration failed: %d\n", ret);
925
926 return ret;
927}
928
929static void __exit ath6kl_sdio_exit(void)
930{
931 sdio_unregister_driver(&ath6kl_sdio_driver);
932}
933
934module_init(ath6kl_sdio_init);
935module_exit(ath6kl_sdio_exit);
936
937MODULE_AUTHOR("Atheros Communications, Inc.");
938MODULE_DESCRIPTION("Driver support for Atheros AR600x SDIO devices");
939MODULE_LICENSE("Dual BSD/GPL");
940
941MODULE_FIRMWARE(AR6003_REV2_OTP_FILE);
942MODULE_FIRMWARE(AR6003_REV2_FIRMWARE_FILE);
943MODULE_FIRMWARE(AR6003_REV2_PATCH_FILE);
944MODULE_FIRMWARE(AR6003_REV2_BOARD_DATA_FILE);
945MODULE_FIRMWARE(AR6003_REV2_DEFAULT_BOARD_DATA_FILE);
946MODULE_FIRMWARE(AR6003_REV3_OTP_FILE);
947MODULE_FIRMWARE(AR6003_REV3_FIRMWARE_FILE);
948MODULE_FIRMWARE(AR6003_REV3_PATCH_FILE);
949MODULE_FIRMWARE(AR6003_REV3_BOARD_DATA_FILE);
950MODULE_FIRMWARE(AR6003_REV3_DEFAULT_BOARD_DATA_FILE);
951
