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