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/mmc/card.h>
18 #include <linux/mmc/mmc.h>
19 #include <linux/mmc/host.h>
20 #include <linux/mmc/sdio_func.h>
21 #include <linux/mmc/sdio_ids.h>
22 #include <linux/mmc/sdio.h>
23 #include <linux/mmc/sd.h>
31 struct sdio_func *func;
36 struct list_head bus_req_freeq;
38 /* available bus requests */
39 struct bus_request bus_req[BUS_REQUEST_MAX_NUM];
44 /* scatter request list head */
45 struct list_head scat_req;
49 atomic_t irq_handling;
50 const struct sdio_device_id *id;
51 struct work_struct wr_async_work;
52 struct list_head wr_asyncq;
53 spinlock_t wr_async_lock;
56 #define CMD53_ARG_READ 0
57 #define CMD53_ARG_WRITE 1
58 #define CMD53_ARG_BLOCK_BASIS 1
59 #define CMD53_ARG_FIXED_ADDRESS 0
60 #define CMD53_ARG_INCR_ADDRESS 1
62 static inline struct ath6kl_sdio *ath6kl_sdio_priv(struct ath6kl *ar)
68 * Macro to check if DMA buffer is WORD-aligned and DMA-able.
69 * Most host controllers assume the buffer is DMA'able and will
70 * bug-check otherwise (i.e. buffers on the stack). virt_addr_valid
71 * check fails on stack memory.
73 static inline bool buf_needs_bounce(u8 *buf)
75 return ((unsigned long) buf & 0x3) || !virt_addr_valid(buf);
78 static void ath6kl_sdio_set_mbox_info(struct ath6kl *ar)
80 struct ath6kl_mbox_info *mbox_info = &ar->mbox_info;
82 /* EP1 has an extended range */
83 mbox_info->htc_addr = HIF_MBOX_BASE_ADDR;
84 mbox_info->htc_ext_addr = HIF_MBOX0_EXT_BASE_ADDR;
85 mbox_info->htc_ext_sz = HIF_MBOX0_EXT_WIDTH;
86 mbox_info->block_size = HIF_MBOX_BLOCK_SIZE;
87 mbox_info->gmbox_addr = HIF_GMBOX_BASE_ADDR;
88 mbox_info->gmbox_sz = HIF_GMBOX_WIDTH;
91 static inline void ath6kl_sdio_set_cmd53_arg(u32 *arg, u8 rw, u8 func,
92 u8 mode, u8 opcode, u32 addr,
95 *arg = (((rw & 1) << 31) |
96 ((func & 0x7) << 28) |
98 ((opcode & 1) << 26) |
99 ((addr & 0x1FFFF) << 9) |
103 static inline void ath6kl_sdio_set_cmd52_arg(u32 *arg, u8 write, u8 raw,
104 unsigned int address,
109 *arg = ((write & 1) << 31) |
110 ((func & 0x7) << 28) |
113 ((address & 0x1FFFF) << 9) |
118 static int ath6kl_sdio_func0_cmd52_wr_byte(struct mmc_card *card,
119 unsigned int address,
122 struct mmc_command io_cmd;
124 memset(&io_cmd, 0, sizeof(io_cmd));
125 ath6kl_sdio_set_cmd52_arg(&io_cmd.arg, 1, 0, address, byte);
126 io_cmd.opcode = SD_IO_RW_DIRECT;
127 io_cmd.flags = MMC_RSP_R5 | MMC_CMD_AC;
129 return mmc_wait_for_cmd(card->host, &io_cmd, 0);
132 static int ath6kl_sdio_io(struct sdio_func *func, u32 request, u32 addr,
137 if (request & HIF_WRITE) {
138 if (addr >= HIF_MBOX_BASE_ADDR &&
139 addr <= HIF_MBOX_END_ADDR)
140 addr += (HIF_MBOX_WIDTH - len);
142 if (addr == HIF_MBOX0_EXT_BASE_ADDR)
143 addr += HIF_MBOX0_EXT_WIDTH - len;
145 if (request & HIF_FIXED_ADDRESS)
146 ret = sdio_writesb(func, addr, buf, len);
148 ret = sdio_memcpy_toio(func, addr, buf, len);
150 if (request & HIF_FIXED_ADDRESS)
151 ret = sdio_readsb(func, buf, addr, len);
153 ret = sdio_memcpy_fromio(func, buf, addr, len);
159 static struct bus_request *ath6kl_sdio_alloc_busreq(struct ath6kl_sdio *ar_sdio)
161 struct bus_request *bus_req;
164 spin_lock_irqsave(&ar_sdio->lock, flag);
166 if (list_empty(&ar_sdio->bus_req_freeq)) {
167 spin_unlock_irqrestore(&ar_sdio->lock, flag);
171 bus_req = list_first_entry(&ar_sdio->bus_req_freeq,
172 struct bus_request, list);
173 list_del(&bus_req->list);
175 spin_unlock_irqrestore(&ar_sdio->lock, flag);
176 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: bus request 0x%p\n", __func__, bus_req);
181 static void ath6kl_sdio_free_bus_req(struct ath6kl_sdio *ar_sdio,
182 struct bus_request *bus_req)
186 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: bus request 0x%p\n", __func__, bus_req);
188 spin_lock_irqsave(&ar_sdio->lock, flag);
189 list_add_tail(&bus_req->list, &ar_sdio->bus_req_freeq);
190 spin_unlock_irqrestore(&ar_sdio->lock, flag);
193 static void ath6kl_sdio_setup_scat_data(struct hif_scatter_req *scat_req,
194 struct mmc_data *data)
196 struct scatterlist *sg;
199 data->blksz = HIF_MBOX_BLOCK_SIZE;
200 data->blocks = scat_req->len / HIF_MBOX_BLOCK_SIZE;
202 ath6kl_dbg(ATH6KL_DBG_SCATTER,
203 "hif-scatter: (%s) addr: 0x%X, (block len: %d, block count: %d) , (tot:%d,sg:%d)\n",
204 (scat_req->req & HIF_WRITE) ? "WR" : "RD", scat_req->addr,
205 data->blksz, data->blocks, scat_req->len,
206 scat_req->scat_entries);
208 data->flags = (scat_req->req & HIF_WRITE) ? MMC_DATA_WRITE :
211 /* fill SG entries */
212 sg = scat_req->sgentries;
213 sg_init_table(sg, scat_req->scat_entries);
215 /* assemble SG list */
216 for (i = 0; i < scat_req->scat_entries; i++, sg++) {
217 ath6kl_dbg(ATH6KL_DBG_SCATTER, "%d: addr:0x%p, len:%d\n",
218 i, scat_req->scat_list[i].buf,
219 scat_req->scat_list[i].len);
221 sg_set_buf(sg, scat_req->scat_list[i].buf,
222 scat_req->scat_list[i].len);
225 /* set scatter-gather table for request */
226 data->sg = scat_req->sgentries;
227 data->sg_len = scat_req->scat_entries;
230 static int ath6kl_sdio_scat_rw(struct ath6kl_sdio *ar_sdio,
231 struct bus_request *req)
233 struct mmc_request mmc_req;
234 struct mmc_command cmd;
235 struct mmc_data data;
236 struct hif_scatter_req *scat_req;
240 scat_req = req->scat_req;
242 if (scat_req->virt_scat) {
244 if (scat_req->req & HIF_BLOCK_BASIS)
245 len = round_down(len, HIF_MBOX_BLOCK_SIZE);
247 status = ath6kl_sdio_io(ar_sdio->func, scat_req->req,
248 scat_req->addr, scat_req->virt_dma_buf,
253 memset(&mmc_req, 0, sizeof(struct mmc_request));
254 memset(&cmd, 0, sizeof(struct mmc_command));
255 memset(&data, 0, sizeof(struct mmc_data));
257 ath6kl_sdio_setup_scat_data(scat_req, &data);
259 opcode = (scat_req->req & HIF_FIXED_ADDRESS) ?
260 CMD53_ARG_FIXED_ADDRESS : CMD53_ARG_INCR_ADDRESS;
262 rw = (scat_req->req & HIF_WRITE) ? CMD53_ARG_WRITE : CMD53_ARG_READ;
264 /* Fixup the address so that the last byte will fall on MBOX EOM */
265 if (scat_req->req & HIF_WRITE) {
266 if (scat_req->addr == HIF_MBOX_BASE_ADDR)
267 scat_req->addr += HIF_MBOX_WIDTH - scat_req->len;
269 /* Uses extended address range */
270 scat_req->addr += HIF_MBOX0_EXT_WIDTH - scat_req->len;
273 /* set command argument */
274 ath6kl_sdio_set_cmd53_arg(&cmd.arg, rw, ar_sdio->func->num,
275 CMD53_ARG_BLOCK_BASIS, opcode, scat_req->addr,
278 cmd.opcode = SD_IO_RW_EXTENDED;
279 cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
282 mmc_req.data = &data;
284 mmc_set_data_timeout(&data, ar_sdio->func->card);
285 /* synchronous call to process request */
286 mmc_wait_for_req(ar_sdio->func->card->host, &mmc_req);
288 status = cmd.error ? cmd.error : data.error;
291 scat_req->status = status;
293 if (scat_req->status)
294 ath6kl_err("Scatter write request failed:%d\n",
297 if (scat_req->req & HIF_ASYNCHRONOUS)
298 scat_req->complete(ar_sdio->ar->htc_target, scat_req);
303 static int ath6kl_sdio_alloc_prep_scat_req(struct ath6kl_sdio *ar_sdio,
304 int n_scat_entry, int n_scat_req,
307 struct hif_scatter_req *s_req;
308 struct bus_request *bus_req;
309 int i, scat_req_sz, scat_list_sz, sg_sz, buf_sz;
312 scat_list_sz = (n_scat_entry - 1) * sizeof(struct hif_scatter_item);
313 scat_req_sz = sizeof(*s_req) + scat_list_sz;
316 sg_sz = sizeof(struct scatterlist) * n_scat_entry;
318 buf_sz = 2 * L1_CACHE_BYTES +
319 ATH6KL_MAX_TRANSFER_SIZE_PER_SCATTER;
321 for (i = 0; i < n_scat_req; i++) {
322 /* allocate the scatter request */
323 s_req = kzalloc(scat_req_sz, GFP_KERNEL);
328 virt_buf = kzalloc(buf_sz, GFP_KERNEL);
334 s_req->virt_dma_buf =
335 (u8 *)L1_CACHE_ALIGN((unsigned long)virt_buf);
337 /* allocate sglist */
338 s_req->sgentries = kzalloc(sg_sz, GFP_KERNEL);
340 if (!s_req->sgentries) {
346 /* allocate a bus request for this scatter request */
347 bus_req = ath6kl_sdio_alloc_busreq(ar_sdio);
349 kfree(s_req->sgentries);
350 kfree(s_req->virt_dma_buf);
355 /* assign the scatter request to this bus request */
356 bus_req->scat_req = s_req;
357 s_req->busrequest = bus_req;
359 s_req->virt_scat = virt_scat;
361 /* add it to the scatter pool */
362 hif_scatter_req_add(ar_sdio->ar, s_req);
368 static int ath6kl_sdio_read_write_sync(struct ath6kl *ar, u32 addr, u8 *buf,
369 u32 len, u32 request)
371 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
374 bool bounced = false;
376 if (request & HIF_BLOCK_BASIS)
377 len = round_down(len, HIF_MBOX_BLOCK_SIZE);
379 if (buf_needs_bounce(buf)) {
380 if (!ar_sdio->dma_buffer)
382 tbuf = ar_sdio->dma_buffer;
383 memcpy(tbuf, buf, len);
388 sdio_claim_host(ar_sdio->func);
389 ret = ath6kl_sdio_io(ar_sdio->func, request, addr, tbuf, len);
390 if ((request & HIF_READ) && bounced)
391 memcpy(buf, tbuf, len);
392 sdio_release_host(ar_sdio->func);
397 static void __ath6kl_sdio_write_async(struct ath6kl_sdio *ar_sdio,
398 struct bus_request *req)
401 ath6kl_sdio_scat_rw(ar_sdio, req);
406 status = ath6kl_sdio_read_write_sync(ar_sdio->ar, req->address,
407 req->buffer, req->length,
409 context = req->packet;
410 ath6kl_sdio_free_bus_req(ar_sdio, req);
411 ath6kldev_rw_comp_handler(context, status);
415 static void ath6kl_sdio_write_async_work(struct work_struct *work)
417 struct ath6kl_sdio *ar_sdio;
419 struct bus_request *req, *tmp_req;
421 ar_sdio = container_of(work, struct ath6kl_sdio, wr_async_work);
422 sdio_claim_host(ar_sdio->func);
424 spin_lock_irqsave(&ar_sdio->wr_async_lock, flags);
425 list_for_each_entry_safe(req, tmp_req, &ar_sdio->wr_asyncq, list) {
426 list_del(&req->list);
427 spin_unlock_irqrestore(&ar_sdio->wr_async_lock, flags);
428 __ath6kl_sdio_write_async(ar_sdio, req);
429 spin_lock_irqsave(&ar_sdio->wr_async_lock, flags);
431 spin_unlock_irqrestore(&ar_sdio->wr_async_lock, flags);
433 sdio_release_host(ar_sdio->func);
436 static void ath6kl_sdio_irq_handler(struct sdio_func *func)
439 struct ath6kl_sdio *ar_sdio;
441 ar_sdio = sdio_get_drvdata(func);
442 atomic_set(&ar_sdio->irq_handling, 1);
445 * Release the host during interrups so we can pick it back up when
446 * we process commands.
448 sdio_release_host(ar_sdio->func);
450 status = ath6kldev_intr_bh_handler(ar_sdio->ar);
451 sdio_claim_host(ar_sdio->func);
452 atomic_set(&ar_sdio->irq_handling, 0);
453 WARN_ON(status && status != -ECANCELED);
456 static int ath6kl_sdio_power_on(struct ath6kl_sdio *ar_sdio)
458 struct sdio_func *func = ar_sdio->func;
461 if (!ar_sdio->is_disabled)
464 sdio_claim_host(func);
466 ret = sdio_enable_func(func);
468 ath6kl_err("Unable to enable sdio func: %d)\n", ret);
469 sdio_release_host(func);
473 sdio_release_host(func);
476 * Wait for hardware to initialise. It should take a lot less than
477 * 10 ms but let's be conservative here.
481 ar_sdio->is_disabled = false;
486 static int ath6kl_sdio_power_off(struct ath6kl_sdio *ar_sdio)
490 if (ar_sdio->is_disabled)
493 /* Disable the card */
494 sdio_claim_host(ar_sdio->func);
495 ret = sdio_disable_func(ar_sdio->func);
496 sdio_release_host(ar_sdio->func);
501 ar_sdio->is_disabled = true;
506 static int ath6kl_sdio_write_async(struct ath6kl *ar, u32 address, u8 *buffer,
507 u32 length, u32 request,
508 struct htc_packet *packet)
510 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
511 struct bus_request *bus_req;
514 bus_req = ath6kl_sdio_alloc_busreq(ar_sdio);
519 bus_req->address = address;
520 bus_req->buffer = buffer;
521 bus_req->length = length;
522 bus_req->request = request;
523 bus_req->packet = packet;
525 spin_lock_irqsave(&ar_sdio->wr_async_lock, flags);
526 list_add_tail(&bus_req->list, &ar_sdio->wr_asyncq);
527 spin_unlock_irqrestore(&ar_sdio->wr_async_lock, flags);
528 queue_work(ar->ath6kl_wq, &ar_sdio->wr_async_work);
533 static void ath6kl_sdio_irq_enable(struct ath6kl *ar)
535 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
538 sdio_claim_host(ar_sdio->func);
540 /* Register the isr */
541 ret = sdio_claim_irq(ar_sdio->func, ath6kl_sdio_irq_handler);
543 ath6kl_err("Failed to claim sdio irq: %d\n", ret);
545 sdio_release_host(ar_sdio->func);
548 static void ath6kl_sdio_irq_disable(struct ath6kl *ar)
550 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
553 sdio_claim_host(ar_sdio->func);
555 /* Mask our function IRQ */
556 while (atomic_read(&ar_sdio->irq_handling)) {
557 sdio_release_host(ar_sdio->func);
558 schedule_timeout(HZ / 10);
559 sdio_claim_host(ar_sdio->func);
562 ret = sdio_release_irq(ar_sdio->func);
564 ath6kl_err("Failed to release sdio irq: %d\n", ret);
566 sdio_release_host(ar_sdio->func);
569 static struct hif_scatter_req *ath6kl_sdio_scatter_req_get(struct ath6kl *ar)
571 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
572 struct hif_scatter_req *node = NULL;
575 spin_lock_irqsave(&ar_sdio->scat_lock, flag);
577 if (!list_empty(&ar_sdio->scat_req)) {
578 node = list_first_entry(&ar_sdio->scat_req,
579 struct hif_scatter_req, list);
580 list_del(&node->list);
583 spin_unlock_irqrestore(&ar_sdio->scat_lock, flag);
588 static void ath6kl_sdio_scatter_req_add(struct ath6kl *ar,
589 struct hif_scatter_req *s_req)
591 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
594 spin_lock_irqsave(&ar_sdio->scat_lock, flag);
596 list_add_tail(&s_req->list, &ar_sdio->scat_req);
598 spin_unlock_irqrestore(&ar_sdio->scat_lock, flag);
602 /* scatter gather read write request */
603 static int ath6kl_sdio_async_rw_scatter(struct ath6kl *ar,
604 struct hif_scatter_req *scat_req)
606 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
607 u32 request = scat_req->req;
614 ath6kl_dbg(ATH6KL_DBG_SCATTER,
615 "hif-scatter: total len: %d scatter entries: %d\n",
616 scat_req->len, scat_req->scat_entries);
618 if (request & HIF_SYNCHRONOUS) {
619 sdio_claim_host(ar_sdio->func);
620 status = ath6kl_sdio_scat_rw(ar_sdio, scat_req->busrequest);
621 sdio_release_host(ar_sdio->func);
623 spin_lock_irqsave(&ar_sdio->wr_async_lock, flags);
624 list_add_tail(&scat_req->busrequest->list, &ar_sdio->wr_asyncq);
625 spin_unlock_irqrestore(&ar_sdio->wr_async_lock, flags);
626 queue_work(ar->ath6kl_wq, &ar_sdio->wr_async_work);
632 /* clean up scatter support */
633 static void ath6kl_sdio_cleanup_scatter(struct ath6kl *ar)
635 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
636 struct hif_scatter_req *s_req, *tmp_req;
639 /* empty the free list */
640 spin_lock_irqsave(&ar_sdio->scat_lock, flag);
641 list_for_each_entry_safe(s_req, tmp_req, &ar_sdio->scat_req, list) {
642 list_del(&s_req->list);
643 spin_unlock_irqrestore(&ar_sdio->scat_lock, flag);
645 if (s_req->busrequest)
646 ath6kl_sdio_free_bus_req(ar_sdio, s_req->busrequest);
647 kfree(s_req->virt_dma_buf);
648 kfree(s_req->sgentries);
651 spin_lock_irqsave(&ar_sdio->scat_lock, flag);
653 spin_unlock_irqrestore(&ar_sdio->scat_lock, flag);
656 /* setup of HIF scatter resources */
657 static int ath6kl_sdio_enable_scatter(struct ath6kl *ar)
659 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
660 struct htc_target *target = ar->htc_target;
662 bool virt_scat = false;
664 /* check if host supports scatter and it meets our requirements */
665 if (ar_sdio->func->card->host->max_segs < MAX_SCATTER_ENTRIES_PER_REQ) {
666 ath6kl_err("host only supports scatter of :%d entries, need: %d\n",
667 ar_sdio->func->card->host->max_segs,
668 MAX_SCATTER_ENTRIES_PER_REQ);
673 ret = ath6kl_sdio_alloc_prep_scat_req(ar_sdio,
674 MAX_SCATTER_ENTRIES_PER_REQ,
675 MAX_SCATTER_REQUESTS, virt_scat);
678 ath6kl_dbg(ATH6KL_DBG_ANY,
679 "hif-scatter enabled: max scatter req : %d entries: %d\n",
680 MAX_SCATTER_REQUESTS,
681 MAX_SCATTER_ENTRIES_PER_REQ);
683 target->max_scat_entries = MAX_SCATTER_ENTRIES_PER_REQ;
684 target->max_xfer_szper_scatreq =
685 MAX_SCATTER_REQ_TRANSFER_SIZE;
687 ath6kl_sdio_cleanup_scatter(ar);
688 ath6kl_warn("hif scatter resource setup failed, trying virtual scatter method\n");
692 if (virt_scat || ret) {
693 ret = ath6kl_sdio_alloc_prep_scat_req(ar_sdio,
694 ATH6KL_SCATTER_ENTRIES_PER_REQ,
695 ATH6KL_SCATTER_REQS, virt_scat);
698 ath6kl_err("failed to alloc virtual scatter resources !\n");
699 ath6kl_sdio_cleanup_scatter(ar);
703 ath6kl_dbg(ATH6KL_DBG_ANY,
704 "Vitual scatter enabled, max_scat_req:%d, entries:%d\n",
705 ATH6KL_SCATTER_REQS, ATH6KL_SCATTER_ENTRIES_PER_REQ);
707 target->max_scat_entries = ATH6KL_SCATTER_ENTRIES_PER_REQ;
708 target->max_xfer_szper_scatreq =
709 ATH6KL_MAX_TRANSFER_SIZE_PER_SCATTER;
715 static int ath6kl_sdio_suspend(struct ath6kl *ar)
717 struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
718 struct sdio_func *func = ar_sdio->func;
722 flags = sdio_get_host_pm_caps(func);
724 if (!(flags & MMC_PM_KEEP_POWER))
725 /* as host doesn't support keep power we need to bail out */
728 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
730 printk(KERN_ERR "ath6kl: set sdio pm flags failed: %d\n",
735 ath6kl_deep_sleep_enable(ar);
740 static const struct ath6kl_hif_ops ath6kl_sdio_ops = {
741 .read_write_sync = ath6kl_sdio_read_write_sync,
742 .write_async = ath6kl_sdio_write_async,
743 .irq_enable = ath6kl_sdio_irq_enable,
744 .irq_disable = ath6kl_sdio_irq_disable,
745 .scatter_req_get = ath6kl_sdio_scatter_req_get,
746 .scatter_req_add = ath6kl_sdio_scatter_req_add,
747 .enable_scatter = ath6kl_sdio_enable_scatter,
748 .scat_req_rw = ath6kl_sdio_async_rw_scatter,
749 .cleanup_scatter = ath6kl_sdio_cleanup_scatter,
750 .suspend = ath6kl_sdio_suspend,
753 static int ath6kl_sdio_probe(struct sdio_func *func,
754 const struct sdio_device_id *id)
757 struct ath6kl_sdio *ar_sdio;
761 ath6kl_dbg(ATH6KL_DBG_TRC,
762 "%s: func: 0x%X, vendor id: 0x%X, dev id: 0x%X, block size: 0x%X/0x%X\n",
763 __func__, func->num, func->vendor,
764 func->device, func->max_blksize, func->cur_blksize);
766 ar_sdio = kzalloc(sizeof(struct ath6kl_sdio), GFP_KERNEL);
770 ar_sdio->dma_buffer = kzalloc(HIF_DMA_BUFFER_SIZE, GFP_KERNEL);
771 if (!ar_sdio->dma_buffer) {
776 ar_sdio->func = func;
777 sdio_set_drvdata(func, ar_sdio);
780 ar_sdio->is_disabled = true;
782 spin_lock_init(&ar_sdio->lock);
783 spin_lock_init(&ar_sdio->scat_lock);
784 spin_lock_init(&ar_sdio->wr_async_lock);
786 INIT_LIST_HEAD(&ar_sdio->scat_req);
787 INIT_LIST_HEAD(&ar_sdio->bus_req_freeq);
788 INIT_LIST_HEAD(&ar_sdio->wr_asyncq);
790 INIT_WORK(&ar_sdio->wr_async_work, ath6kl_sdio_write_async_work);
792 for (count = 0; count < BUS_REQUEST_MAX_NUM; count++)
793 ath6kl_sdio_free_bus_req(ar_sdio, &ar_sdio->bus_req[count]);
795 ar = ath6kl_core_alloc(&ar_sdio->func->dev);
797 ath6kl_err("Failed to alloc ath6kl core\n");
803 ar->hif_priv = ar_sdio;
804 ar->hif_ops = &ath6kl_sdio_ops;
806 ath6kl_sdio_set_mbox_info(ar);
808 sdio_claim_host(func);
810 if ((ar_sdio->id->device & MANUFACTURER_ID_ATH6KL_BASE_MASK) >=
811 MANUFACTURER_ID_AR6003_BASE) {
812 /* enable 4-bit ASYNC interrupt on AR6003 or later */
813 ret = ath6kl_sdio_func0_cmd52_wr_byte(func->card,
814 CCCR_SDIO_IRQ_MODE_REG,
815 SDIO_IRQ_MODE_ASYNC_4BIT_IRQ);
817 ath6kl_err("Failed to enable 4-bit async irq mode %d\n",
819 sdio_release_host(func);
823 ath6kl_dbg(ATH6KL_DBG_TRC, "4-bit async irq mode enabled\n");
826 /* give us some time to enable, in ms */
827 func->enable_timeout = 100;
829 sdio_release_host(func);
831 ret = ath6kl_sdio_power_on(ar_sdio);
835 sdio_claim_host(func);
837 ret = sdio_set_block_size(func, HIF_MBOX_BLOCK_SIZE);
839 ath6kl_err("Set sdio block size %d failed: %d)\n",
840 HIF_MBOX_BLOCK_SIZE, ret);
841 sdio_release_host(func);
845 sdio_release_host(func);
847 ret = ath6kl_core_init(ar);
849 ath6kl_err("Failed to init ath6kl core\n");
856 ath6kl_sdio_power_off(ar_sdio);
858 ath6kl_cfg80211_deinit(ar_sdio->ar);
860 kfree(ar_sdio->dma_buffer);
867 static void ath6kl_sdio_remove(struct sdio_func *func)
869 struct ath6kl_sdio *ar_sdio;
871 ar_sdio = sdio_get_drvdata(func);
873 ath6kl_stop_txrx(ar_sdio->ar);
874 cancel_work_sync(&ar_sdio->wr_async_work);
876 ath6kl_unavail_ev(ar_sdio->ar);
878 ath6kl_sdio_power_off(ar_sdio);
880 kfree(ar_sdio->dma_buffer);
884 static const struct sdio_device_id ath6kl_sdio_devices[] = {
885 {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6003_BASE | 0x0))},
886 {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6003_BASE | 0x1))},
890 MODULE_DEVICE_TABLE(sdio, ath6kl_sdio_devices);
892 static struct sdio_driver ath6kl_sdio_driver = {
893 .name = "ath6kl_sdio",
894 .id_table = ath6kl_sdio_devices,
895 .probe = ath6kl_sdio_probe,
896 .remove = ath6kl_sdio_remove,
899 static int __init ath6kl_sdio_init(void)
903 ret = sdio_register_driver(&ath6kl_sdio_driver);
905 ath6kl_err("sdio driver registration failed: %d\n", ret);
910 static void __exit ath6kl_sdio_exit(void)
912 sdio_unregister_driver(&ath6kl_sdio_driver);
915 module_init(ath6kl_sdio_init);
916 module_exit(ath6kl_sdio_exit);
918 MODULE_AUTHOR("Atheros Communications, Inc.");
919 MODULE_DESCRIPTION("Driver support for Atheros AR600x SDIO devices");
920 MODULE_LICENSE("Dual BSD/GPL");
922 MODULE_FIRMWARE(AR6003_REV2_OTP_FILE);
923 MODULE_FIRMWARE(AR6003_REV2_FIRMWARE_FILE);
924 MODULE_FIRMWARE(AR6003_REV2_PATCH_FILE);
925 MODULE_FIRMWARE(AR6003_REV2_BOARD_DATA_FILE);
926 MODULE_FIRMWARE(AR6003_REV2_DEFAULT_BOARD_DATA_FILE);
927 MODULE_FIRMWARE(AR6003_REV3_OTP_FILE);
928 MODULE_FIRMWARE(AR6003_REV3_FIRMWARE_FILE);
929 MODULE_FIRMWARE(AR6003_REV3_PATCH_FILE);
930 MODULE_FIRMWARE(AR6003_REV3_BOARD_DATA_FILE);
931 MODULE_FIRMWARE(AR6003_REV3_DEFAULT_BOARD_DATA_FILE);