2 * Copyright (c) 2004-2011 Atheros Communications Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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>
32 struct sdio_func *func;
37 struct list_head bus_req_freeq;
39 /* available bus requests */
40 struct bus_request bus_req[BUS_REQUEST_MAX_NUM];
45 /* scatter request list head */
46 struct list_head scat_req;
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;
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
63 static inline struct ath6kl_sdio *ath6kl_sdio_priv(struct ath6kl *ar)
69 * Macro to check if DMA buffer is WORD-aligned and DMA-able.
70 * Most host controllers assume the buffer is DMA'able and will
71 * bug-check otherwise (i.e. buffers on the stack). virt_addr_valid
72 * check fails on stack memory.
74 static inline bool buf_needs_bounce(u8 *buf)
76 return ((unsigned long) buf & 0x3) || !virt_addr_valid(buf);
79 static void ath6kl_sdio_set_mbox_info(struct ath6kl *ar)
81 struct ath6kl_mbox_info *mbox_info = &ar->mbox_info;
83 /* EP1 has an extended range */
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;
92 static inline void ath6kl_sdio_set_cmd53_arg(u32 *arg, u8 rw, u8 func,
93 u8 mode, u8 opcode, u32 addr,
96 *arg = (((rw & 1) << 31) |
97 ((func & 0x7) << 28) |
99 ((opcode & 1) << 26) |
100 ((addr & 0x1FFFF) << 9) |
104 static inline void ath6kl_sdio_set_cmd52_arg(u32 *arg, u8 write, u8 raw,
105 unsigned int address,
110 *arg = ((write & 1) << 31) |
111 ((func & 0x7) << 28) |
114 ((address & 0x1FFFF) << 9) |
119 static int ath6kl_sdio_func0_cmd52_wr_byte(struct mmc_card *card,
120 unsigned int address,
123 struct mmc_command io_cmd;
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;
130 return mmc_wait_for_cmd(card->host, &io_cmd, 0);
133 static int ath6kl_sdio_io(struct sdio_func *func, u32 request, u32 addr,
138 if (request & HIF_WRITE) {
139 /* FIXME: looks like ugly workaround for something */
140 if (addr >= HIF_MBOX_BASE_ADDR &&
141 addr <= HIF_MBOX_END_ADDR)
142 addr += (HIF_MBOX_WIDTH - len);
144 /* FIXME: this also looks like ugly workaround */
145 if (addr == HIF_MBOX0_EXT_BASE_ADDR)
146 addr += HIF_MBOX0_EXT_WIDTH - len;
148 if (request & HIF_FIXED_ADDRESS)
149 ret = sdio_writesb(func, addr, buf, len);
151 ret = sdio_memcpy_toio(func, addr, buf, len);
153 if (request & HIF_FIXED_ADDRESS)
154 ret = sdio_readsb(func, buf, addr, len);
156 ret = sdio_memcpy_fromio(func, buf, addr, len);
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);
167 static struct bus_request *ath6kl_sdio_alloc_busreq(struct ath6kl_sdio *ar_sdio)
169 struct bus_request *bus_req;
172 spin_lock_irqsave(&ar_sdio->lock, flag);
174 if (list_empty(&ar_sdio->bus_req_freeq)) {
175 spin_unlock_irqrestore(&ar_sdio->lock, flag);
179 bus_req = list_first_entry(&ar_sdio->bus_req_freeq,
180 struct bus_request, list);
181 list_del(&bus_req->list);
183 spin_unlock_irqrestore(&ar_sdio->lock, flag);
184 ath6kl_dbg(ATH6KL_DBG_SCATTER, "%s: bus request 0x%p\n",
190 static void ath6kl_sdio_free_bus_req(struct ath6kl_sdio *ar_sdio,
191 struct bus_request *bus_req)
195 ath6kl_dbg(ATH6KL_DBG_SCATTER, "%s: bus request 0x%p\n",
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);
203 static void ath6kl_sdio_setup_scat_data(struct hif_scatter_req *scat_req,
204 struct mmc_data *data)
206 struct scatterlist *sg;
209 data->blksz = HIF_MBOX_BLOCK_SIZE;
210 data->blocks = scat_req->len / HIF_MBOX_BLOCK_SIZE;
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);
218 data->flags = (scat_req->req & HIF_WRITE) ? MMC_DATA_WRITE :
221 /* fill SG entries */
222 sg = scat_req->sgentries;
223 sg_init_table(sg, scat_req->scat_entries);
225 /* assemble SG list */
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);
231 sg_set_buf(sg, scat_req->scat_list[i].buf,
232 scat_req->scat_list[i].len);
235 /* set scatter-gather table for request */
236 data->sg = scat_req->sgentries;
237 data->sg_len = scat_req->scat_entries;
240 static int ath6kl_sdio_scat_rw(struct ath6kl_sdio *ar_sdio,
241 struct bus_request *req)
243 struct mmc_request mmc_req;
244 struct mmc_command cmd;
245 struct mmc_data data;
246 struct hif_scatter_req *scat_req;
250 scat_req = req->scat_req;
252 if (scat_req->virt_scat) {
254 if (scat_req->req & HIF_BLOCK_BASIS)
255 len = round_down(len, HIF_MBOX_BLOCK_SIZE);
257 status = ath6kl_sdio_io(ar_sdio->func, scat_req->req,
258 scat_req->addr, scat_req->virt_dma_buf,
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));
267 ath6kl_sdio_setup_scat_data(scat_req, &data);
269 opcode = (scat_req->req & HIF_FIXED_ADDRESS) ?
270 CMD53_ARG_FIXED_ADDRESS : CMD53_ARG_INCR_ADDRESS;
272 rw = (scat_req->req & HIF_WRITE) ? CMD53_ARG_WRITE : CMD53_ARG_READ;
274 /* Fixup the address so that the last byte will fall on MBOX EOM */
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;
279 /* Uses extended address range */
280 scat_req->addr += HIF_MBOX0_EXT_WIDTH - scat_req->len;
283 /* set command argument */
284 ath6kl_sdio_set_cmd53_arg(&cmd.arg, rw, ar_sdio->func->num,
285 CMD53_ARG_BLOCK_BASIS, opcode, scat_req->addr,
288 cmd.opcode = SD_IO_RW_EXTENDED;
289 cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
292 mmc_req.data = &data;
294 mmc_set_data_timeout(&data, ar_sdio->func->card);
295 /* synchronous call to process request */
296 mmc_wait_for_req(ar_sdio->func->card->host, &mmc_req);
298 status = cmd.error ? cmd.error : data.error;
301 scat_req->status = status;
303 if (scat_req->status)
304 ath6kl_err("Scatter write request failed:%d\n",
307 if (scat_req->req & HIF_ASYNCHRONOUS)
308 scat_req->complete(ar_sdio->ar->htc_target, scat_req);
313 static int ath6kl_sdio_alloc_prep_scat_req(struct ath6kl_sdio *ar_sdio,
314 int n_scat_entry, int n_scat_req,
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;
322 scat_list_sz = (n_scat_entry - 1) * sizeof(struct hif_scatter_item);
323 scat_req_sz = sizeof(*s_req) + scat_list_sz;
326 sg_sz = sizeof(struct scatterlist) * n_scat_entry;
328 buf_sz = 2 * L1_CACHE_BYTES +
329 ATH6KL_MAX_TRANSFER_SIZE_PER_SCATTER;
331 for (i = 0; i < n_scat_req; i++) {
332 /* allocate the scatter request */
333 s_req = kzalloc(scat_req_sz, GFP_KERNEL);
338 virt_buf = kzalloc(buf_sz, GFP_KERNEL);
344 s_req->virt_dma_buf =
345 (u8 *)L1_CACHE_ALIGN((unsigned long)virt_buf);
347 /* allocate sglist */
348 s_req->sgentries = kzalloc(sg_sz, GFP_KERNEL);
350 if (!s_req->sgentries) {
356 /* allocate a bus request for this scatter request */
357 bus_req = ath6kl_sdio_alloc_busreq(ar_sdio);
359 kfree(s_req->sgentries);
360 kfree(s_req->virt_dma_buf);
365 /* assign the scatter request to this bus request */
366 bus_req->scat_req = s_req;
367 s_req->busrequest = bus_req;
369 s_req->virt_scat = virt_scat;
371 /* add it to the scatter pool */
372 hif_scatter_req_add(ar_sdio->ar, s_req);
378 static int ath6kl_sdio_read_write_sync(struct ath6kl *ar, u32 addr, u8 *buf,
379 u32 len, u32 request)
381 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
384 bool bounced = false;
386 if (request & HIF_BLOCK_BASIS)
387 len = round_down(len, HIF_MBOX_BLOCK_SIZE);
389 if (buf_needs_bounce(buf)) {
390 if (!ar_sdio->dma_buffer)
392 tbuf = ar_sdio->dma_buffer;
393 memcpy(tbuf, buf, len);
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);
407 static void __ath6kl_sdio_write_async(struct ath6kl_sdio *ar_sdio,
408 struct bus_request *req)
411 ath6kl_sdio_scat_rw(ar_sdio, req);
416 status = ath6kl_sdio_read_write_sync(ar_sdio->ar, req->address,
417 req->buffer, req->length,
419 context = req->packet;
420 ath6kl_sdio_free_bus_req(ar_sdio, req);
421 ath6kldev_rw_comp_handler(context, status);
425 static void ath6kl_sdio_write_async_work(struct work_struct *work)
427 struct ath6kl_sdio *ar_sdio;
429 struct bus_request *req, *tmp_req;
431 ar_sdio = container_of(work, struct ath6kl_sdio, wr_async_work);
432 sdio_claim_host(ar_sdio->func);
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);
441 spin_unlock_irqrestore(&ar_sdio->wr_async_lock, flags);
443 sdio_release_host(ar_sdio->func);
446 static void ath6kl_sdio_irq_handler(struct sdio_func *func)
449 struct ath6kl_sdio *ar_sdio;
451 ath6kl_dbg(ATH6KL_DBG_SDIO, "irq\n");
453 ar_sdio = sdio_get_drvdata(func);
454 atomic_set(&ar_sdio->irq_handling, 1);
457 * Release the host during interrups so we can pick it back up when
458 * we process commands.
460 sdio_release_host(ar_sdio->func);
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);
468 static int ath6kl_sdio_power_on(struct ath6kl_sdio *ar_sdio)
470 struct sdio_func *func = ar_sdio->func;
473 if (!ar_sdio->is_disabled)
476 sdio_claim_host(func);
478 ret = sdio_enable_func(func);
480 ath6kl_err("Unable to enable sdio func: %d)\n", ret);
481 sdio_release_host(func);
485 sdio_release_host(func);
488 * Wait for hardware to initialise. It should take a lot less than
489 * 10 ms but let's be conservative here.
493 ar_sdio->is_disabled = false;
498 static int ath6kl_sdio_power_off(struct ath6kl_sdio *ar_sdio)
502 if (ar_sdio->is_disabled)
505 /* Disable the card */
506 sdio_claim_host(ar_sdio->func);
507 ret = sdio_disable_func(ar_sdio->func);
508 sdio_release_host(ar_sdio->func);
513 ar_sdio->is_disabled = true;
518 static int ath6kl_sdio_write_async(struct ath6kl *ar, u32 address, u8 *buffer,
519 u32 length, u32 request,
520 struct htc_packet *packet)
522 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
523 struct bus_request *bus_req;
526 bus_req = ath6kl_sdio_alloc_busreq(ar_sdio);
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;
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);
545 static void ath6kl_sdio_irq_enable(struct ath6kl *ar)
547 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
550 sdio_claim_host(ar_sdio->func);
552 /* Register the isr */
553 ret = sdio_claim_irq(ar_sdio->func, ath6kl_sdio_irq_handler);
555 ath6kl_err("Failed to claim sdio irq: %d\n", ret);
557 sdio_release_host(ar_sdio->func);
560 static void ath6kl_sdio_irq_disable(struct ath6kl *ar)
562 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
565 sdio_claim_host(ar_sdio->func);
567 /* Mask our function IRQ */
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);
574 ret = sdio_release_irq(ar_sdio->func);
576 ath6kl_err("Failed to release sdio irq: %d\n", ret);
578 sdio_release_host(ar_sdio->func);
581 static struct hif_scatter_req *ath6kl_sdio_scatter_req_get(struct ath6kl *ar)
583 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
584 struct hif_scatter_req *node = NULL;
587 spin_lock_irqsave(&ar_sdio->scat_lock, flag);
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);
595 spin_unlock_irqrestore(&ar_sdio->scat_lock, flag);
600 static void ath6kl_sdio_scatter_req_add(struct ath6kl *ar,
601 struct hif_scatter_req *s_req)
603 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
606 spin_lock_irqsave(&ar_sdio->scat_lock, flag);
608 list_add_tail(&s_req->list, &ar_sdio->scat_req);
610 spin_unlock_irqrestore(&ar_sdio->scat_lock, flag);
614 /* scatter gather read write request */
615 static int ath6kl_sdio_async_rw_scatter(struct ath6kl *ar,
616 struct hif_scatter_req *scat_req)
618 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
619 u32 request = scat_req->req;
626 ath6kl_dbg(ATH6KL_DBG_SCATTER,
627 "hif-scatter: total len: %d scatter entries: %d\n",
628 scat_req->len, scat_req->scat_entries);
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);
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);
644 /* clean up scatter support */
645 static void ath6kl_sdio_cleanup_scatter(struct ath6kl *ar)
647 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
648 struct hif_scatter_req *s_req, *tmp_req;
651 /* empty the free list */
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);
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);
663 spin_lock_irqsave(&ar_sdio->scat_lock, flag);
665 spin_unlock_irqrestore(&ar_sdio->scat_lock, flag);
668 /* setup of HIF scatter resources */
669 static int ath6kl_sdio_enable_scatter(struct ath6kl *ar)
671 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
672 struct htc_target *target = ar->htc_target;
674 bool virt_scat = false;
676 /* check if host supports scatter and it meets our requirements */
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);
685 ret = ath6kl_sdio_alloc_prep_scat_req(ar_sdio,
686 MAX_SCATTER_ENTRIES_PER_REQ,
687 MAX_SCATTER_REQUESTS, virt_scat);
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);
695 target->max_scat_entries = MAX_SCATTER_ENTRIES_PER_REQ;
696 target->max_xfer_szper_scatreq =
697 MAX_SCATTER_REQ_TRANSFER_SIZE;
699 ath6kl_sdio_cleanup_scatter(ar);
700 ath6kl_warn("hif scatter resource setup failed, trying virtual scatter method\n");
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);
710 ath6kl_err("failed to alloc virtual scatter resources !\n");
711 ath6kl_sdio_cleanup_scatter(ar);
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);
719 target->max_scat_entries = ATH6KL_SCATTER_ENTRIES_PER_REQ;
720 target->max_xfer_szper_scatreq =
721 ATH6KL_MAX_TRANSFER_SIZE_PER_SCATTER;
727 static int ath6kl_sdio_suspend(struct ath6kl *ar)
729 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
730 struct sdio_func *func = ar_sdio->func;
734 flags = sdio_get_host_pm_caps(func);
736 if (!(flags & MMC_PM_KEEP_POWER))
737 /* as host doesn't support keep power we need to bail out */
738 ath6kl_dbg(ATH6KL_DBG_SDIO,
739 "func %d doesn't support MMC_PM_KEEP_POWER\n",
743 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
745 printk(KERN_ERR "ath6kl: set sdio pm flags failed: %d\n",
750 ath6kl_deep_sleep_enable(ar);
755 static 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,
768 static int ath6kl_sdio_probe(struct sdio_func *func,
769 const struct sdio_device_id *id)
772 struct ath6kl_sdio *ar_sdio;
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);
781 ar_sdio = kzalloc(sizeof(struct ath6kl_sdio), GFP_KERNEL);
785 ar_sdio->dma_buffer = kzalloc(HIF_DMA_BUFFER_SIZE, GFP_KERNEL);
786 if (!ar_sdio->dma_buffer) {
791 ar_sdio->func = func;
792 sdio_set_drvdata(func, ar_sdio);
795 ar_sdio->is_disabled = true;
797 spin_lock_init(&ar_sdio->lock);
798 spin_lock_init(&ar_sdio->scat_lock);
799 spin_lock_init(&ar_sdio->wr_async_lock);
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);
805 INIT_WORK(&ar_sdio->wr_async_work, ath6kl_sdio_write_async_work);
807 for (count = 0; count < BUS_REQUEST_MAX_NUM; count++)
808 ath6kl_sdio_free_bus_req(ar_sdio, &ar_sdio->bus_req[count]);
810 ar = ath6kl_core_alloc(&ar_sdio->func->dev);
812 ath6kl_err("Failed to alloc ath6kl core\n");
818 ar->hif_priv = ar_sdio;
819 ar->hif_ops = &ath6kl_sdio_ops;
821 ath6kl_sdio_set_mbox_info(ar);
823 sdio_claim_host(func);
825 if ((ar_sdio->id->device & MANUFACTURER_ID_ATH6KL_BASE_MASK) >=
826 MANUFACTURER_ID_AR6003_BASE) {
827 /* enable 4-bit ASYNC interrupt on AR6003 or later */
828 ret = ath6kl_sdio_func0_cmd52_wr_byte(func->card,
829 CCCR_SDIO_IRQ_MODE_REG,
830 SDIO_IRQ_MODE_ASYNC_4BIT_IRQ);
832 ath6kl_err("Failed to enable 4-bit async irq mode %d\n",
834 sdio_release_host(func);
838 ath6kl_dbg(ATH6KL_DBG_SDIO, "4-bit async irq mode enabled\n");
841 /* give us some time to enable, in ms */
842 func->enable_timeout = 100;
844 sdio_release_host(func);
846 ret = ath6kl_sdio_power_on(ar_sdio);
850 sdio_claim_host(func);
852 ret = sdio_set_block_size(func, HIF_MBOX_BLOCK_SIZE);
854 ath6kl_err("Set sdio block size %d failed: %d)\n",
855 HIF_MBOX_BLOCK_SIZE, ret);
856 sdio_release_host(func);
860 sdio_release_host(func);
862 ret = ath6kl_core_init(ar);
864 ath6kl_err("Failed to init ath6kl core\n");
871 ath6kl_sdio_power_off(ar_sdio);
873 ath6kl_cfg80211_deinit(ar_sdio->ar);
875 kfree(ar_sdio->dma_buffer);
882 static void ath6kl_sdio_remove(struct sdio_func *func)
884 struct ath6kl_sdio *ar_sdio;
886 ath6kl_dbg(ATH6KL_DBG_SDIO,
887 "removed func %d vendor 0x%x device 0x%x\n",
888 func->num, func->vendor, func->device);
890 ar_sdio = sdio_get_drvdata(func);
892 ath6kl_stop_txrx(ar_sdio->ar);
893 cancel_work_sync(&ar_sdio->wr_async_work);
895 ath6kl_unavail_ev(ar_sdio->ar);
897 ath6kl_sdio_power_off(ar_sdio);
899 kfree(ar_sdio->dma_buffer);
903 static 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))},
909 MODULE_DEVICE_TABLE(sdio, ath6kl_sdio_devices);
911 static 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,
918 static int __init ath6kl_sdio_init(void)
922 ret = sdio_register_driver(&ath6kl_sdio_driver);
924 ath6kl_err("sdio driver registration failed: %d\n", ret);
929 static void __exit ath6kl_sdio_exit(void)
931 sdio_unregister_driver(&ath6kl_sdio_driver);
934 module_init(ath6kl_sdio_init);
935 module_exit(ath6kl_sdio_exit);
937 MODULE_AUTHOR("Atheros Communications, Inc.");
938 MODULE_DESCRIPTION("Driver support for Atheros AR600x SDIO devices");
939 MODULE_LICENSE("Dual BSD/GPL");
941 MODULE_FIRMWARE(AR6003_REV2_OTP_FILE);
942 MODULE_FIRMWARE(AR6003_REV2_FIRMWARE_FILE);
943 MODULE_FIRMWARE(AR6003_REV2_PATCH_FILE);
944 MODULE_FIRMWARE(AR6003_REV2_BOARD_DATA_FILE);
945 MODULE_FIRMWARE(AR6003_REV2_DEFAULT_BOARD_DATA_FILE);
946 MODULE_FIRMWARE(AR6003_REV3_OTP_FILE);
947 MODULE_FIRMWARE(AR6003_REV3_FIRMWARE_FILE);
948 MODULE_FIRMWARE(AR6003_REV3_PATCH_FILE);
949 MODULE_FIRMWARE(AR6003_REV3_BOARD_DATA_FILE);
950 MODULE_FIRMWARE(AR6003_REV3_DEFAULT_BOARD_DATA_FILE);