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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth...
[deliverable/linux.git] / drivers / net / wireless / brcm80211 / brcmfmac / bcmsdh.c
CommitLineData
5b435de0
AS		 1/*
2 * Copyright (c) 2010 Broadcom Corporation
3 *
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.
7 *
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 ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16/* ****************** SDIO CARD Interface Functions **************************/
17
18#include <linux/types.h>
19#include <linux/netdevice.h>
ee40fa06 20#include <linux/export.h>
5b435de0
AS		 21#include <linux/pci.h>
22#include <linux/pci_ids.h>
23#include <linux/sched.h>
24#include <linux/completion.h>
354b75bf 25#include <linux/scatterlist.h>
5b435de0
AS		 26#include <linux/mmc/sdio.h>
27#include <linux/mmc/sdio_func.h>
28#include <linux/mmc/card.h>
668761ac 29#include <linux/platform_data/brcmfmac-sdio.h>
5b435de0
AS		 30
31#include <defs.h>
32#include <brcm_hw_ids.h>
33#include <brcmu_utils.h>
34#include <brcmu_wifi.h>
35#include <soc.h>
5b435de0
AS		 36#include "dhd_bus.h"
37#include "dhd_dbg.h"
38#include "sdio_host.h"
39
40#define SDIOH_API_ACCESS_RETRY_LIMIT 2
41
668761ac
HM		 42
43static irqreturn_t brcmf_sdio_oob_irqhandler(int irq, void *dev_id)
ba89bf19 44{
5b3c1832
HM		 45 struct brcmf_bus *bus_if = dev_get_drvdata(dev_id);
46 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
ba89bf19 47
668761ac 48 brcmf_dbg(INTR, "OOB intr triggered\n");
ba89bf19 49
668761ac 50 /* out-of-band interrupt is level-triggered which won't
ba89bf19
FL		 51 * be cleared until dpc
52 */
53 if (sdiodev->irq_en) {
54 disable_irq_nosync(irq);
55 sdiodev->irq_en = false;
56 }
57
58 brcmf_sdbrcm_isr(sdiodev->bus);
59
60 return IRQ_HANDLED;
61}
62
668761ac 63static void brcmf_sdio_ib_irqhandler(struct sdio_func *func)
5b435de0 64{
5b3c1832
HM		 65 struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev);
66 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
5b435de0 67
668761ac 68 brcmf_dbg(INTR, "IB intr triggered\n");
5b435de0 69
5b435de0 70 brcmf_sdbrcm_isr(sdiodev->bus);
5b435de0
AS		 71}
72
fbf59108 73/* dummy handler for SDIO function 2 interrupt */
ba89bf19 74static void brcmf_sdio_dummy_irqhandler(struct sdio_func *func)
fbf59108
FL		 75{
76}
77
ba89bf19 78int brcmf_sdio_intr_register(struct brcmf_sdio_dev *sdiodev)
5b435de0 79{
668761ac
HM		 80 int ret = 0;
81 u8 data;
82 unsigned long flags;
5b435de0 83
668761ac
HM		 84 if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) {
85 brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n",
86 sdiodev->pdata->oob_irq_nr);
87 ret = request_irq(sdiodev->pdata->oob_irq_nr,
88 brcmf_sdio_oob_irqhandler,
89 sdiodev->pdata->oob_irq_flags,
90 "brcmf_oob_intr",
91 &sdiodev->func[1]->dev);
92 if (ret != 0) {
93 brcmf_err("request_irq failed %d\n", ret);
94 return ret;
95 }
96 sdiodev->oob_irq_requested = true;
97 spin_lock_init(&sdiodev->irq_en_lock);
98 spin_lock_irqsave(&sdiodev->irq_en_lock, flags);
99 sdiodev->irq_en = true;
100 spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags);
101
102 ret = enable_irq_wake(sdiodev->pdata->oob_irq_nr);
103 if (ret != 0) {
104 brcmf_err("enable_irq_wake failed %d\n", ret);
105 return ret;
106 }
107 sdiodev->irq_wake = true;
108
109 sdio_claim_host(sdiodev->func[1]);
110
111 /* must configure SDIO_CCCR_IENx to enable irq */
112 data = brcmf_sdio_regrb(sdiodev, SDIO_CCCR_IENx, &ret);
113 data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1;
114 brcmf_sdio_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret);
115
116 /* redirect, configure and enable io for interrupt signal */
117 data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE;
118 if (sdiodev->pdata->oob_irq_flags & IRQF_TRIGGER_HIGH)
119 data |= SDIO_SEPINT_ACT_HI;
120 brcmf_sdio_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret);
121
122 sdio_release_host(sdiodev->func[1]);
123 } else {
124 brcmf_dbg(SDIO, "Entering\n");
125 sdio_claim_host(sdiodev->func[1]);
126 sdio_claim_irq(sdiodev->func[1], brcmf_sdio_ib_irqhandler);
127 sdio_claim_irq(sdiodev->func[2], brcmf_sdio_dummy_irqhandler);
128 sdio_release_host(sdiodev->func[1]);
129 }
5b435de0
AS		 130
131 return 0;
132}
133
ba89bf19 134int brcmf_sdio_intr_unregister(struct brcmf_sdio_dev *sdiodev)
5b435de0 135{
c3203374 136 brcmf_dbg(SDIO, "Entering\n");
5b435de0 137
668761ac
HM		 138 if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) {
139 sdio_claim_host(sdiodev->func[1]);
140 brcmf_sdio_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
141 brcmf_sdio_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
142 sdio_release_host(sdiodev->func[1]);
143
144 if (sdiodev->oob_irq_requested) {
145 sdiodev->oob_irq_requested = false;
146 if (sdiodev->irq_wake) {
147 disable_irq_wake(sdiodev->pdata->oob_irq_nr);
148 sdiodev->irq_wake = false;
149 }
150 free_irq(sdiodev->pdata->oob_irq_nr,
151 &sdiodev->func[1]->dev);
152 sdiodev->irq_en = false;
153 }
154 } else {
155 sdio_claim_host(sdiodev->func[1]);
156 sdio_release_irq(sdiodev->func[2]);
157 sdio_release_irq(sdiodev->func[1]);
158 sdio_release_host(sdiodev->func[1]);
159 }
5b435de0
AS		 160
161 return 0;
162}
163
356bae6f 164static int
5b435de0
AS		 165brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
166{
7d9cfc28
FL		 167 int err = 0, i;
168 u8 addr[3];
169 s32 retry;
170
171 addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
172 addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK;
173 addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK;
174
175 for (i = 0; i < 3; i++) {
176 retry = 0;
177 do {
178 if (retry)
179 usleep_range(1000, 2000);
180 err = brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE,
181 SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW + i,
182 &addr[i]);
183 } while (err != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
184
185 if (err) {
5e8149f5 186 brcmf_err("failed at addr:0x%0x\n",
7d9cfc28
FL		 187 SBSDIO_FUNC1_SBADDRLOW + i);
188 break;
189 }
190 }
5b435de0
AS		 191
192 return err;
193}
194
356bae6f
FL		 195static int
196brcmf_sdio_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr)
197{
198 uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
199 int err = 0;
200
201 if (bar0 != sdiodev->sbwad) {
202 err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
203 if (err)
204 return err;
205
206 sdiodev->sbwad = bar0;
207 }
208
209 *addr &= SBSDIO_SB_OFT_ADDR_MASK;
210
211 if (width == 4)
212 *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
213
214 return 0;
215}
216
4531603a 217int
e9b8d91d
FL		 218brcmf_sdio_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
219 void *data, bool write)
220{
221 u8 func_num, reg_size;
e9b8d91d
FL		 222 s32 retry = 0;
223 int ret;
224
225 /*
226 * figure out how to read the register based on address range
d8b3fc59 227 * 0x00 ~ 0x7FF: function 0 CCCR and FBR
e9b8d91d
FL		 228 * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
229 * The rest: function 1 silicon backplane core registers
230 */
d8b3fc59 231 if ((addr & ~REG_F0_REG_MASK) == 0) {
e9b8d91d
FL		 232 func_num = SDIO_FUNC_0;
233 reg_size = 1;
234 } else if ((addr & ~REG_F1_MISC_MASK) == 0) {
235 func_num = SDIO_FUNC_1;
236 reg_size = 1;
237 } else {
238 func_num = SDIO_FUNC_1;
239 reg_size = 4;
240
fcaac2b1
AS		 241 ret = brcmf_sdio_addrprep(sdiodev, reg_size, &addr);
242 if (ret)
243 goto done;
e9b8d91d
FL		 244 }
245
246 do {
247 if (!write)
248 memset(data, 0, reg_size);
249 if (retry) /* wait for 1 ms till bus get settled down */
250 usleep_range(1000, 2000);
251 if (reg_size == 1)
252 ret = brcmf_sdioh_request_byte(sdiodev, write,
253 func_num, addr, data);
254 else
255 ret = brcmf_sdioh_request_word(sdiodev, write,
256 func_num, addr, data, 4);
257 } while (ret != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
258
fcaac2b1 259done:
5c15c23a 260 if (ret != 0)
5e8149f5 261 brcmf_err("failed with %d\n", ret);
e9b8d91d
FL		 262
263 return ret;
264}
265
266u8 brcmf_sdio_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
267{
268 u8 data;
269 int retval;
270
c3203374 271 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
e9b8d91d 272 retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false);
c3203374 273 brcmf_dbg(SDIO, "data:0x%02x\n", data);
e9b8d91d
FL		 274
275 if (ret)
276 *ret = retval;
277
278 return data;
279}
280
281u32 brcmf_sdio_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
282{
283 u32 data;
284 int retval;
285
c3203374 286 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
e9b8d91d 287 retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false);
c3203374 288 brcmf_dbg(SDIO, "data:0x%08x\n", data);
e9b8d91d
FL		 289
290 if (ret)
291 *ret = retval;
292
293 return data;
294}
295
296void brcmf_sdio_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
297 u8 data, int *ret)
298{
299 int retval;
300
c3203374 301 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data);
e9b8d91d
FL		 302 retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true);
303
304 if (ret)
305 *ret = retval;
306}
307
308void brcmf_sdio_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
309 u32 data, int *ret)
310{
311 int retval;
312
c3203374 313 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data);
e9b8d91d
FL		 314 retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true);
315
316 if (ret)
317 *ret = retval;
318}
319
4aef267e
AS		 320static int brcmf_sdio_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn,
321 bool write, u32 addr, struct sk_buff *pkt)
322{
323 unsigned int req_sz;
324
325 brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
326 if (brcmf_pm_resume_error(sdiodev))
327 return -EIO;
328
329 /* Single skb use the standard mmc interface */
330 req_sz = pkt->len + 3;
331 req_sz &= (uint)~3;
332
333 if (write)
334 return sdio_memcpy_toio(sdiodev->func[fn], addr,
335 ((u8 *)(pkt->data)),
336 req_sz);
337 else if (fn == 1)
338 return sdio_memcpy_fromio(sdiodev->func[fn],
339 ((u8 *)(pkt->data)),
340 addr, req_sz);
341 else
342 /* function 2 read is FIFO operation */
343 return sdio_readsb(sdiodev->func[fn],
344 ((u8 *)(pkt->data)), addr,
345 req_sz);
346}
347
78b3f1c5 348/**
0d7d9821 349 * brcmf_sdio_sglist_rw - SDIO interface function for block data access
78b3f1c5
FL		 350 * @sdiodev: brcmfmac sdio device
351 * @fn: SDIO function number
352 * @write: direction flag
353 * @addr: dongle memory address as source/destination
354 * @pkt: skb pointer
355 *
356 * This function takes the respbonsibility as the interface function to MMC
357 * stack for block data access. It assumes that the skb passed down by the
358 * caller has already been padded and aligned.
359 */
0d7d9821
AS		 360static int brcmf_sdio_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn,
361 bool write, u32 addr,
362 struct sk_buff_head *pktlist)
78b3f1c5 363{
354b75bf 364 unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset;
71201496 365 unsigned int max_req_sz, orig_offset, dst_offset;
3f782744 366 unsigned short max_seg_cnt, seg_sz;
3b81a680
FL		 367 unsigned char *pkt_data, *orig_data, *dst_data;
368 struct sk_buff *pkt_next = NULL, *local_pkt_next;
369 struct sk_buff_head local_list, *target_list;
354b75bf
FL		 370 struct mmc_request mmc_req;
371 struct mmc_command mmc_cmd;
372 struct mmc_data mmc_dat;
373 struct sg_table st;
374 struct scatterlist *sgl;
354b75bf
FL		 375 int ret = 0;
376
377 if (!pktlist->qlen)
378 return -EINVAL;
78b3f1c5
FL		 379
380 brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
381 if (brcmf_pm_resume_error(sdiodev))
382 return -EIO;
383
3b81a680
FL		 384 target_list = pktlist;
385 /* for host with broken sg support, prepare a page aligned list */
386 __skb_queue_head_init(&local_list);
387 if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) {
388 req_sz = 0;
389 skb_queue_walk(pktlist, pkt_next)
390 req_sz += pkt_next->len;
391 req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize);
392 while (req_sz > PAGE_SIZE) {
393 pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE);
394 if (pkt_next == NULL) {
395 ret = -ENOMEM;
396 goto exit;
397 }
398 __skb_queue_tail(&local_list, pkt_next);
399 req_sz -= PAGE_SIZE;
400 }
401 pkt_next = brcmu_pkt_buf_get_skb(req_sz);
402 if (pkt_next == NULL) {
403 ret = -ENOMEM;
404 goto exit;
405 }
406 __skb_queue_tail(&local_list, pkt_next);
407 target_list = &local_list;
408 }
409
354b75bf 410 func_blk_sz = sdiodev->func[fn]->cur_blksize;
71201496
AS		 411 max_req_sz = sdiodev->max_request_size;
412 max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count,
413 target_list->qlen);
3b81a680 414 seg_sz = target_list->qlen;
354b75bf 415 pkt_offset = 0;
3b81a680 416 pkt_next = target_list->next;
354b75bf 417
3f782744 418 if (sg_alloc_table(&st, max_seg_cnt, GFP_KERNEL)) {
3b81a680
FL		 419 ret = -ENOMEM;
420 goto exit;
421 }
354b75bf 422
7f9a8dc8
AS		 423 memset(&mmc_req, 0, sizeof(struct mmc_request));
424 memset(&mmc_cmd, 0, sizeof(struct mmc_command));
425 memset(&mmc_dat, 0, sizeof(struct mmc_data));
426
427 mmc_dat.sg = st.sgl;
428 mmc_dat.blksz = func_blk_sz;
429 mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
430 mmc_cmd.opcode = SD_IO_RW_EXTENDED;
431 mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */
432 mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */
433 mmc_cmd.arg |= 1<<27; /* block mode */
434 /* for function 1 the addr will be incremented */
435 mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0;
436 mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
437 mmc_req.cmd = &mmc_cmd;
438 mmc_req.data = &mmc_dat;
439
354b75bf
FL		 440 while (seg_sz) {
441 req_sz = 0;
442 sg_cnt = 0;
354b75bf
FL		 443 sgl = st.sgl;
444 /* prep sg table */
3b81a680 445 while (pkt_next != (struct sk_buff *)target_list) {
354b75bf
FL		 446 pkt_data = pkt_next->data + pkt_offset;
447 sg_data_sz = pkt_next->len - pkt_offset;
71201496
AS		 448 if (sg_data_sz > sdiodev->max_segment_size)
449 sg_data_sz = sdiodev->max_segment_size;
354b75bf
FL		 450 if (sg_data_sz > max_req_sz - req_sz)
451 sg_data_sz = max_req_sz - req_sz;
452
453 sg_set_buf(sgl, pkt_data, sg_data_sz);
454
455 sg_cnt++;
456 sgl = sg_next(sgl);
457 req_sz += sg_data_sz;
458 pkt_offset += sg_data_sz;
459 if (pkt_offset == pkt_next->len) {
460 pkt_offset = 0;
461 pkt_next = pkt_next->next;
462 }
463
3f782744 464 if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt)
354b75bf
FL		 465 break;
466 }
467 seg_sz -= sg_cnt;
468
469 if (req_sz % func_blk_sz != 0) {
470 brcmf_err("sg request length %u is not %u aligned\n",
471 req_sz, func_blk_sz);
3b81a680
FL		 472 ret = -ENOTBLK;
473 goto exit;
354b75bf 474 }
7f9a8dc8 475
354b75bf 476 mmc_dat.sg_len = sg_cnt;
354b75bf 477 mmc_dat.blocks = req_sz / func_blk_sz;
354b75bf
FL		 478 mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */
479 mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */
7f9a8dc8 480 /* incrementing addr for function 1 */
354b75bf
FL		 481 if (fn == 1)
482 addr += req_sz;
483
484 mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card);
71201496 485 mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req);
354b75bf
FL		 486
487 ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error;
488 if (ret != 0) {
489 brcmf_err("CMD53 sg block %s failed %d\n",
490 write ? "write" : "read", ret);
491 ret = -EIO;
492 break;
493 }
494 }
495
3b81a680
FL		 496 if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) {
497 local_pkt_next = local_list.next;
498 orig_offset = 0;
499 skb_queue_walk(pktlist, pkt_next) {
500 dst_offset = 0;
501 do {
502 req_sz = local_pkt_next->len - orig_offset;
503 req_sz = min_t(uint, pkt_next->len - dst_offset,
504 req_sz);
505 orig_data = local_pkt_next->data + orig_offset;
506 dst_data = pkt_next->data + dst_offset;
507 memcpy(dst_data, orig_data, req_sz);
508 orig_offset += req_sz;
509 dst_offset += req_sz;
510 if (orig_offset == local_pkt_next->len) {
511 orig_offset = 0;
512 local_pkt_next = local_pkt_next->next;
513 }
514 if (dst_offset == pkt_next->len)
515 break;
516 } while (!skb_queue_empty(&local_list));
517 }
518 }
519
520exit:
354b75bf 521 sg_free_table(&st);
3b81a680
FL		 522 while ((pkt_next = __skb_dequeue(&local_list)) != NULL)
523 brcmu_pkt_buf_free_skb(pkt_next);
354b75bf
FL		 524
525 return ret;
78b3f1c5
FL		 526}
527
5adfeb63
AS		 528int
529brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
530 uint flags, u8 *buf, uint nbytes)
531{
532 struct sk_buff *mypkt;
533 int err;
534
535 mypkt = brcmu_pkt_buf_get_skb(nbytes);
536 if (!mypkt) {
5e8149f5 537 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
5adfeb63
AS		 538 nbytes);
539 return -EIO;
540 }
541
542 err = brcmf_sdcard_recv_pkt(sdiodev, addr, fn, flags, mypkt);
543 if (!err)
544 memcpy(buf, mypkt->data, nbytes);
545
546 brcmu_pkt_buf_free_skb(mypkt);
547 return err;
548}
549
550int
551brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
552 uint flags, struct sk_buff *pkt)
553{
5adfeb63
AS		 554 uint width;
555 int err = 0;
556
c3203374 557 brcmf_dbg(SDIO, "fun = %d, addr = 0x%x, size = %d\n",
5adfeb63
AS		 558 fn, addr, pkt->len);
559
560 width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
356bae6f 561 err = brcmf_sdio_addrprep(sdiodev, width, &addr);
5adfeb63 562 if (err)
7057fd00 563 goto done;
5b435de0 564
4aef267e 565 err = brcmf_sdio_buffrw(sdiodev, fn, false, addr, pkt);
5adfeb63 566
7057fd00 567done:
5adfeb63
AS		 568 return err;
569}
570
571int brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
a413e39a 572 uint flags, struct sk_buff_head *pktq, uint totlen)
5adfeb63 573{
a413e39a
AS		 574 struct sk_buff *glom_skb;
575 struct sk_buff *skb;
5adfeb63
AS		 576 uint width;
577 int err = 0;
578
c3203374 579 brcmf_dbg(SDIO, "fun = %d, addr = 0x%x, size = %d\n",
5adfeb63
AS		 580 fn, addr, pktq->qlen);
581
5b435de0 582 width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
356bae6f 583 err = brcmf_sdio_addrprep(sdiodev, width, &addr);
5adfeb63 584 if (err)
7057fd00 585 goto done;
5b435de0 586
a413e39a
AS		 587 if (pktq->qlen == 1)
588 err = brcmf_sdio_buffrw(sdiodev, fn, false, addr, pktq->next);
589 else if (!sdiodev->sg_support) {
590 glom_skb = brcmu_pkt_buf_get_skb(totlen);
591 if (!glom_skb)
592 return -ENOMEM;
593 err = brcmf_sdio_buffrw(sdiodev, fn, false, addr, glom_skb);
594 if (err)
595 goto done;
596
597 skb_queue_walk(pktq, skb) {
598 memcpy(skb->data, glom_skb->data, skb->len);
599 skb_pull(glom_skb, skb->len);
600 }
601 } else
602 err = brcmf_sdio_sglist_rw(sdiodev, fn, false, addr, pktq);
5b435de0 603
7057fd00 604done:
5adfeb63 605 return err;
5b435de0
AS		 606}
607
608int
609brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
5adfeb63
AS		 610 uint flags, u8 *buf, uint nbytes)
611{
612 struct sk_buff *mypkt;
4aef267e 613 uint width;
5adfeb63
AS		 614 int err;
615
616 mypkt = brcmu_pkt_buf_get_skb(nbytes);
617 if (!mypkt) {
5e8149f5 618 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
5adfeb63
AS		 619 nbytes);
620 return -EIO;
621 }
622
623 memcpy(mypkt->data, buf, nbytes);
4aef267e
AS		 624
625 width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
fcaac2b1 626 err = brcmf_sdio_addrprep(sdiodev, width, &addr);
4aef267e 627
fcaac2b1
AS		 628 if (!err)
629 err = brcmf_sdio_buffrw(sdiodev, fn, true, addr, mypkt);
5adfeb63
AS		 630
631 brcmu_pkt_buf_free_skb(mypkt);
632 return err;
633
634}
635
636int
637brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
b05e9254 638 uint flags, struct sk_buff_head *pktq)
5b435de0 639{
c8cce1f9 640 struct sk_buff *skb;
5b435de0 641 uint width;
fcaac2b1 642 int err;
5b435de0 643
c3203374 644 brcmf_dbg(SDIO, "fun = %d, addr = 0x%x, size = %d\n",
b05e9254 645 fn, addr, pktq->qlen);
5b435de0 646
5b435de0 647 width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
fcaac2b1
AS		 648 err = brcmf_sdio_addrprep(sdiodev, width, &addr);
649 if (err)
650 return err;
5b435de0 651
c8cce1f9
AS		 652 if (pktq->qlen == 1 || !sdiodev->sg_support)
653 skb_queue_walk(pktq, skb) {
654 err = brcmf_sdio_buffrw(sdiodev, fn, true, addr, skb);
655 if (err)
656 break;
657 }
658 else
659 err = brcmf_sdio_sglist_rw(sdiodev, fn, true, addr, pktq);
660
661 return err;
5b435de0
AS		 662}
663
ba540b01
FL		 664int
665brcmf_sdio_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
666 u8 *data, uint size)
5b435de0 667{
ba540b01
FL		 668 int bcmerror = 0;
669 struct sk_buff *pkt;
670 u32 sdaddr;
671 uint dsize;
672
673 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
674 pkt = dev_alloc_skb(dsize);
675 if (!pkt) {
676 brcmf_err("dev_alloc_skb failed: len %d\n", dsize);
677 return -EIO;
678 }
679 pkt->priority = 0;
4c6e869d 680
ba540b01
FL		 681 /* Determine initial transfer parameters */
682 sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK;
683 if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK)
684 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr);
685 else
686 dsize = size;
5b435de0 687
ba540b01
FL		 688 sdio_claim_host(sdiodev->func[1]);
689
690 /* Do the transfer(s) */
691 while (size) {
692 /* Set the backplane window to include the start address */
693 bcmerror = brcmf_sdcard_set_sbaddr_window(sdiodev, address);
694 if (bcmerror)
695 break;
696
697 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n",
698 write ? "write" : "read", dsize,
699 sdaddr, address & SBSDIO_SBWINDOW_MASK);
700
701 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK;
702 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
703
704 skb_put(pkt, dsize);
705 if (write)
706 memcpy(pkt->data, data, dsize);
4aef267e
AS		 707 bcmerror = brcmf_sdio_buffrw(sdiodev, SDIO_FUNC_1, write,
708 sdaddr, pkt);
ba540b01
FL		 709 if (bcmerror) {
710 brcmf_err("membytes transfer failed\n");
711 break;
712 }
713 if (!write)
714 memcpy(data, pkt->data, dsize);
715 skb_trim(pkt, dsize);
716
717 /* Adjust for next transfer (if any) */
718 size -= dsize;
719 if (size) {
720 data += dsize;
721 address += dsize;
722 sdaddr = 0;
723 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
724 }
4c6e869d
AS		 725 }
726
ba540b01 727 dev_kfree_skb(pkt);
4c6e869d 728
ba540b01
FL		 729 /* Return the window to backplane enumeration space for core access */
730 if (brcmf_sdcard_set_sbaddr_window(sdiodev, sdiodev->sbwad))
731 brcmf_err("FAILED to set window back to 0x%x\n",
732 sdiodev->sbwad);
4c6e869d 733
ba540b01 734 sdio_release_host(sdiodev->func[1]);
4c6e869d 735
ba540b01 736 return bcmerror;
5b435de0
AS		 737}
738
739int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
740{
741 char t_func = (char)fn;
c3203374 742 brcmf_dbg(SDIO, "Enter\n");
5b435de0
AS		 743
744 /* issue abort cmd52 command through F0 */
745 brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0,
746 SDIO_CCCR_ABORT, &t_func);
747
c3203374 748 brcmf_dbg(SDIO, "Exit\n");
5b435de0
AS		 749 return 0;
750}
751
752int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
753{
754 u32 regs = 0;
755 int ret = 0;
756
757 ret = brcmf_sdioh_attach(sdiodev);
758 if (ret)
759 goto out;
760
761 regs = SI_ENUM_BASE;
762
5b435de0 763 /* try to attach to the target device */
4175b88b 764 sdiodev->bus = brcmf_sdbrcm_probe(regs, sdiodev);
5b435de0 765 if (!sdiodev->bus) {
5e8149f5 766 brcmf_err("device attach failed\n");
5b435de0
AS		 767 ret = -ENODEV;
768 goto out;
769 }
770
771out:
772 if (ret)
773 brcmf_sdio_remove(sdiodev);
774
775 return ret;
776}
777EXPORT_SYMBOL(brcmf_sdio_probe);
778
779int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev)
780{
2def5c10
HM		 781 sdiodev->bus_if->state = BRCMF_BUS_DOWN;
782
5b435de0
AS		 783 if (sdiodev->bus) {
784 brcmf_sdbrcm_disconnect(sdiodev->bus);
785 sdiodev->bus = NULL;
786 }
787
788 brcmf_sdioh_detach(sdiodev);
789
790 sdiodev->sbwad = 0;
791
792 return 0;
793}
794EXPORT_SYMBOL(brcmf_sdio_remove);
795
796void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable)
797{
798 if (enable)
799 brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
800 else
801 brcmf_sdbrcm_wd_timer(sdiodev->bus, 0);
802}
Linux kernel - Deliverables
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