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