Commit | Line | Data |
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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> | |
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 | |
42 | static 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 | 62 | static 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 | 73 | static void brcmf_sdio_dummy_irqhandler(struct sdio_func *func) |
fbf59108 FL |
74 | { |
75 | } | |
76 | ||
ba89bf19 | 77 | int 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 | 133 | int 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 | 163 | static int |
5b435de0 AS |
164 | brcmf_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 |
194 | static int |
195 | brcmf_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 | 216 | int |
e9b8d91d FL |
217 | brcmf_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 | 258 | done: |
5c15c23a | 259 | if (ret != 0) |
5e8149f5 | 260 | brcmf_err("failed with %d\n", ret); |
e9b8d91d FL |
261 | |
262 | return ret; | |
263 | } | |
264 | ||
265 | u8 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 | ||
280 | u32 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 | ||
295 | void 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 | ||
307 | void 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 |
319 | static 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 |
359 | static 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 | ||
519 | exit: | |
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 |
527 | int |
528 | brcmf_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 | ||
549 | int | |
550 | brcmf_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 | 566 | done: |
5adfeb63 AS |
567 | return err; |
568 | } | |
569 | ||
570 | int 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 | 603 | done: |
5adfeb63 | 604 | return err; |
5b435de0 AS |
605 | } |
606 | ||
607 | int | |
608 | brcmf_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 | ||
635 | int | |
636 | brcmf_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 |
663 | int |
664 | brcmf_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 | ||
738 | int 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 | ||
751 | int 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 | ||
770 | out: | |
771 | if (ret) | |
772 | brcmf_sdio_remove(sdiodev); | |
773 | ||
774 | return ret; | |
775 | } | |
5b435de0 AS |
776 | |
777 | int 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 | |
793 | void 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 | } |