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> | |
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 | |
43 | static 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 | 63 | static 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 | 74 | static void brcmf_sdio_dummy_irqhandler(struct sdio_func *func) |
fbf59108 FL |
75 | { |
76 | } | |
77 | ||
ba89bf19 | 78 | int 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 | 134 | int 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 | 164 | static int |
5b435de0 AS |
165 | brcmf_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 |
195 | static int |
196 | brcmf_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 | 217 | int |
e9b8d91d FL |
218 | brcmf_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 | ||
356bae6f | 241 | brcmf_sdio_addrprep(sdiodev, reg_size, &addr); |
e9b8d91d FL |
242 | } |
243 | ||
244 | do { | |
245 | if (!write) | |
246 | memset(data, 0, reg_size); | |
247 | if (retry) /* wait for 1 ms till bus get settled down */ | |
248 | usleep_range(1000, 2000); | |
249 | if (reg_size == 1) | |
250 | ret = brcmf_sdioh_request_byte(sdiodev, write, | |
251 | func_num, addr, data); | |
252 | else | |
253 | ret = brcmf_sdioh_request_word(sdiodev, write, | |
254 | func_num, addr, data, 4); | |
255 | } while (ret != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT); | |
256 | ||
5c15c23a | 257 | if (ret != 0) |
5e8149f5 | 258 | brcmf_err("failed with %d\n", ret); |
e9b8d91d FL |
259 | |
260 | return ret; | |
261 | } | |
262 | ||
263 | u8 brcmf_sdio_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) | |
264 | { | |
265 | u8 data; | |
266 | int retval; | |
267 | ||
c3203374 | 268 | brcmf_dbg(SDIO, "addr:0x%08x\n", addr); |
e9b8d91d | 269 | retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false); |
c3203374 | 270 | brcmf_dbg(SDIO, "data:0x%02x\n", data); |
e9b8d91d FL |
271 | |
272 | if (ret) | |
273 | *ret = retval; | |
274 | ||
275 | return data; | |
276 | } | |
277 | ||
278 | u32 brcmf_sdio_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) | |
279 | { | |
280 | u32 data; | |
281 | int retval; | |
282 | ||
c3203374 | 283 | brcmf_dbg(SDIO, "addr:0x%08x\n", addr); |
e9b8d91d | 284 | retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false); |
c3203374 | 285 | brcmf_dbg(SDIO, "data:0x%08x\n", data); |
e9b8d91d FL |
286 | |
287 | if (ret) | |
288 | *ret = retval; | |
289 | ||
290 | return data; | |
291 | } | |
292 | ||
293 | void brcmf_sdio_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, | |
294 | u8 data, int *ret) | |
295 | { | |
296 | int retval; | |
297 | ||
c3203374 | 298 | brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data); |
e9b8d91d FL |
299 | retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true); |
300 | ||
301 | if (ret) | |
302 | *ret = retval; | |
303 | } | |
304 | ||
305 | void brcmf_sdio_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, | |
306 | u32 data, int *ret) | |
307 | { | |
308 | int retval; | |
309 | ||
c3203374 | 310 | brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data); |
e9b8d91d FL |
311 | retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true); |
312 | ||
313 | if (ret) | |
314 | *ret = retval; | |
315 | } | |
316 | ||
78b3f1c5 FL |
317 | /** |
318 | * brcmf_sdio_buffrw - SDIO interface function for block data access | |
319 | * @sdiodev: brcmfmac sdio device | |
320 | * @fn: SDIO function number | |
321 | * @write: direction flag | |
322 | * @addr: dongle memory address as source/destination | |
323 | * @pkt: skb pointer | |
324 | * | |
325 | * This function takes the respbonsibility as the interface function to MMC | |
326 | * stack for block data access. It assumes that the skb passed down by the | |
327 | * caller has already been padded and aligned. | |
328 | */ | |
329 | static int brcmf_sdio_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn, | |
354b75bf | 330 | bool write, u32 addr, struct sk_buff_head *pktlist) |
78b3f1c5 | 331 | { |
354b75bf | 332 | unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset; |
71201496 | 333 | unsigned int max_req_sz, orig_offset, dst_offset; |
3f782744 | 334 | unsigned short max_seg_cnt, seg_sz; |
3b81a680 FL |
335 | unsigned char *pkt_data, *orig_data, *dst_data; |
336 | struct sk_buff *pkt_next = NULL, *local_pkt_next; | |
337 | struct sk_buff_head local_list, *target_list; | |
354b75bf FL |
338 | struct mmc_request mmc_req; |
339 | struct mmc_command mmc_cmd; | |
340 | struct mmc_data mmc_dat; | |
341 | struct sg_table st; | |
342 | struct scatterlist *sgl; | |
354b75bf FL |
343 | int ret = 0; |
344 | ||
345 | if (!pktlist->qlen) | |
346 | return -EINVAL; | |
78b3f1c5 FL |
347 | |
348 | brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait); | |
349 | if (brcmf_pm_resume_error(sdiodev)) | |
350 | return -EIO; | |
351 | ||
352 | /* Single skb use the standard mmc interface */ | |
354b75bf FL |
353 | if (pktlist->qlen == 1) { |
354 | pkt_next = pktlist->next; | |
355 | req_sz = pkt_next->len + 3; | |
356 | req_sz &= (uint)~3; | |
78b3f1c5 FL |
357 | |
358 | if (write) | |
359 | return sdio_memcpy_toio(sdiodev->func[fn], addr, | |
354b75bf FL |
360 | ((u8 *)(pkt_next->data)), |
361 | req_sz); | |
78b3f1c5 FL |
362 | else if (fn == 1) |
363 | return sdio_memcpy_fromio(sdiodev->func[fn], | |
354b75bf FL |
364 | ((u8 *)(pkt_next->data)), |
365 | addr, req_sz); | |
78b3f1c5 FL |
366 | else |
367 | /* function 2 read is FIFO operation */ | |
368 | return sdio_readsb(sdiodev->func[fn], | |
354b75bf FL |
369 | ((u8 *)(pkt_next->data)), addr, |
370 | req_sz); | |
78b3f1c5 FL |
371 | } |
372 | ||
3b81a680 FL |
373 | target_list = pktlist; |
374 | /* for host with broken sg support, prepare a page aligned list */ | |
375 | __skb_queue_head_init(&local_list); | |
376 | if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) { | |
377 | req_sz = 0; | |
378 | skb_queue_walk(pktlist, pkt_next) | |
379 | req_sz += pkt_next->len; | |
380 | req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize); | |
381 | while (req_sz > PAGE_SIZE) { | |
382 | pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE); | |
383 | if (pkt_next == NULL) { | |
384 | ret = -ENOMEM; | |
385 | goto exit; | |
386 | } | |
387 | __skb_queue_tail(&local_list, pkt_next); | |
388 | req_sz -= PAGE_SIZE; | |
389 | } | |
390 | pkt_next = brcmu_pkt_buf_get_skb(req_sz); | |
391 | if (pkt_next == NULL) { | |
392 | ret = -ENOMEM; | |
393 | goto exit; | |
394 | } | |
395 | __skb_queue_tail(&local_list, pkt_next); | |
396 | target_list = &local_list; | |
397 | } | |
398 | ||
354b75bf | 399 | func_blk_sz = sdiodev->func[fn]->cur_blksize; |
71201496 AS |
400 | max_req_sz = sdiodev->max_request_size; |
401 | max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count, | |
402 | target_list->qlen); | |
3b81a680 | 403 | seg_sz = target_list->qlen; |
354b75bf | 404 | pkt_offset = 0; |
3b81a680 | 405 | pkt_next = target_list->next; |
354b75bf | 406 | |
3f782744 | 407 | if (sg_alloc_table(&st, max_seg_cnt, GFP_KERNEL)) { |
3b81a680 FL |
408 | ret = -ENOMEM; |
409 | goto exit; | |
410 | } | |
354b75bf | 411 | |
7f9a8dc8 AS |
412 | memset(&mmc_req, 0, sizeof(struct mmc_request)); |
413 | memset(&mmc_cmd, 0, sizeof(struct mmc_command)); | |
414 | memset(&mmc_dat, 0, sizeof(struct mmc_data)); | |
415 | ||
416 | mmc_dat.sg = st.sgl; | |
417 | mmc_dat.blksz = func_blk_sz; | |
418 | mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; | |
419 | mmc_cmd.opcode = SD_IO_RW_EXTENDED; | |
420 | mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */ | |
421 | mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */ | |
422 | mmc_cmd.arg |= 1<<27; /* block mode */ | |
423 | /* for function 1 the addr will be incremented */ | |
424 | mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0; | |
425 | mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC; | |
426 | mmc_req.cmd = &mmc_cmd; | |
427 | mmc_req.data = &mmc_dat; | |
428 | ||
354b75bf FL |
429 | while (seg_sz) { |
430 | req_sz = 0; | |
431 | sg_cnt = 0; | |
354b75bf FL |
432 | sgl = st.sgl; |
433 | /* prep sg table */ | |
3b81a680 | 434 | while (pkt_next != (struct sk_buff *)target_list) { |
354b75bf FL |
435 | pkt_data = pkt_next->data + pkt_offset; |
436 | sg_data_sz = pkt_next->len - pkt_offset; | |
71201496 AS |
437 | if (sg_data_sz > sdiodev->max_segment_size) |
438 | sg_data_sz = sdiodev->max_segment_size; | |
354b75bf FL |
439 | if (sg_data_sz > max_req_sz - req_sz) |
440 | sg_data_sz = max_req_sz - req_sz; | |
441 | ||
442 | sg_set_buf(sgl, pkt_data, sg_data_sz); | |
443 | ||
444 | sg_cnt++; | |
445 | sgl = sg_next(sgl); | |
446 | req_sz += sg_data_sz; | |
447 | pkt_offset += sg_data_sz; | |
448 | if (pkt_offset == pkt_next->len) { | |
449 | pkt_offset = 0; | |
450 | pkt_next = pkt_next->next; | |
451 | } | |
452 | ||
3f782744 | 453 | if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt) |
354b75bf FL |
454 | break; |
455 | } | |
456 | seg_sz -= sg_cnt; | |
457 | ||
458 | if (req_sz % func_blk_sz != 0) { | |
459 | brcmf_err("sg request length %u is not %u aligned\n", | |
460 | req_sz, func_blk_sz); | |
3b81a680 FL |
461 | ret = -ENOTBLK; |
462 | goto exit; | |
354b75bf | 463 | } |
7f9a8dc8 | 464 | |
354b75bf | 465 | mmc_dat.sg_len = sg_cnt; |
354b75bf | 466 | mmc_dat.blocks = req_sz / func_blk_sz; |
354b75bf FL |
467 | mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */ |
468 | mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */ | |
7f9a8dc8 | 469 | /* incrementing addr for function 1 */ |
354b75bf FL |
470 | if (fn == 1) |
471 | addr += req_sz; | |
472 | ||
473 | mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card); | |
71201496 | 474 | mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req); |
354b75bf FL |
475 | |
476 | ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error; | |
477 | if (ret != 0) { | |
478 | brcmf_err("CMD53 sg block %s failed %d\n", | |
479 | write ? "write" : "read", ret); | |
480 | ret = -EIO; | |
481 | break; | |
482 | } | |
483 | } | |
484 | ||
3b81a680 FL |
485 | if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) { |
486 | local_pkt_next = local_list.next; | |
487 | orig_offset = 0; | |
488 | skb_queue_walk(pktlist, pkt_next) { | |
489 | dst_offset = 0; | |
490 | do { | |
491 | req_sz = local_pkt_next->len - orig_offset; | |
492 | req_sz = min_t(uint, pkt_next->len - dst_offset, | |
493 | req_sz); | |
494 | orig_data = local_pkt_next->data + orig_offset; | |
495 | dst_data = pkt_next->data + dst_offset; | |
496 | memcpy(dst_data, orig_data, req_sz); | |
497 | orig_offset += req_sz; | |
498 | dst_offset += req_sz; | |
499 | if (orig_offset == local_pkt_next->len) { | |
500 | orig_offset = 0; | |
501 | local_pkt_next = local_pkt_next->next; | |
502 | } | |
503 | if (dst_offset == pkt_next->len) | |
504 | break; | |
505 | } while (!skb_queue_empty(&local_list)); | |
506 | } | |
507 | } | |
508 | ||
509 | exit: | |
354b75bf | 510 | sg_free_table(&st); |
3b81a680 FL |
511 | while ((pkt_next = __skb_dequeue(&local_list)) != NULL) |
512 | brcmu_pkt_buf_free_skb(pkt_next); | |
354b75bf FL |
513 | |
514 | return ret; | |
78b3f1c5 FL |
515 | } |
516 | ||
5adfeb63 AS |
517 | int |
518 | brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, | |
519 | uint flags, u8 *buf, uint nbytes) | |
520 | { | |
521 | struct sk_buff *mypkt; | |
522 | int err; | |
523 | ||
524 | mypkt = brcmu_pkt_buf_get_skb(nbytes); | |
525 | if (!mypkt) { | |
5e8149f5 | 526 | brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", |
5adfeb63 AS |
527 | nbytes); |
528 | return -EIO; | |
529 | } | |
530 | ||
531 | err = brcmf_sdcard_recv_pkt(sdiodev, addr, fn, flags, mypkt); | |
532 | if (!err) | |
533 | memcpy(buf, mypkt->data, nbytes); | |
534 | ||
535 | brcmu_pkt_buf_free_skb(mypkt); | |
536 | return err; | |
537 | } | |
538 | ||
539 | int | |
540 | brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, | |
541 | uint flags, struct sk_buff *pkt) | |
542 | { | |
5adfeb63 AS |
543 | uint width; |
544 | int err = 0; | |
354b75bf | 545 | struct sk_buff_head pkt_list; |
5adfeb63 | 546 | |
c3203374 | 547 | brcmf_dbg(SDIO, "fun = %d, addr = 0x%x, size = %d\n", |
5adfeb63 AS |
548 | fn, addr, pkt->len); |
549 | ||
550 | width = (flags & SDIO_REQ_4BYTE) ? 4 : 2; | |
356bae6f | 551 | err = brcmf_sdio_addrprep(sdiodev, width, &addr); |
5adfeb63 | 552 | if (err) |
7057fd00 | 553 | goto done; |
5b435de0 | 554 | |
354b75bf FL |
555 | skb_queue_head_init(&pkt_list); |
556 | skb_queue_tail(&pkt_list, pkt); | |
557 | err = brcmf_sdio_buffrw(sdiodev, fn, false, addr, &pkt_list); | |
558 | skb_dequeue_tail(&pkt_list); | |
5adfeb63 | 559 | |
7057fd00 | 560 | done: |
5adfeb63 AS |
561 | return err; |
562 | } | |
563 | ||
564 | int brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, | |
565 | uint flags, struct sk_buff_head *pktq) | |
566 | { | |
567 | uint incr_fix; | |
568 | uint width; | |
569 | int err = 0; | |
570 | ||
c3203374 | 571 | brcmf_dbg(SDIO, "fun = %d, addr = 0x%x, size = %d\n", |
5adfeb63 AS |
572 | fn, addr, pktq->qlen); |
573 | ||
5b435de0 | 574 | width = (flags & SDIO_REQ_4BYTE) ? 4 : 2; |
356bae6f | 575 | err = brcmf_sdio_addrprep(sdiodev, width, &addr); |
5adfeb63 | 576 | if (err) |
7057fd00 | 577 | goto done; |
5b435de0 | 578 | |
5adfeb63 | 579 | incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC; |
354b75bf | 580 | err = brcmf_sdio_buffrw(sdiodev, fn, false, addr, pktq); |
5b435de0 | 581 | |
7057fd00 | 582 | done: |
5adfeb63 | 583 | return err; |
5b435de0 AS |
584 | } |
585 | ||
586 | int | |
587 | brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, | |
5adfeb63 AS |
588 | uint flags, u8 *buf, uint nbytes) |
589 | { | |
590 | struct sk_buff *mypkt; | |
b05e9254 | 591 | struct sk_buff_head pktq; |
5adfeb63 AS |
592 | int err; |
593 | ||
594 | mypkt = brcmu_pkt_buf_get_skb(nbytes); | |
595 | if (!mypkt) { | |
5e8149f5 | 596 | brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", |
5adfeb63 AS |
597 | nbytes); |
598 | return -EIO; | |
599 | } | |
600 | ||
601 | memcpy(mypkt->data, buf, nbytes); | |
b05e9254 FL |
602 | __skb_queue_head_init(&pktq); |
603 | __skb_queue_tail(&pktq, mypkt); | |
604 | err = brcmf_sdcard_send_pkt(sdiodev, addr, fn, flags, &pktq); | |
605 | __skb_dequeue_tail(&pktq); | |
5adfeb63 AS |
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, | |
b05e9254 | 614 | uint flags, struct sk_buff_head *pktq) |
5b435de0 | 615 | { |
5b435de0 | 616 | uint width; |
5b435de0 AS |
617 | int err = 0; |
618 | ||
c3203374 | 619 | brcmf_dbg(SDIO, "fun = %d, addr = 0x%x, size = %d\n", |
b05e9254 | 620 | fn, addr, pktq->qlen); |
5b435de0 | 621 | |
5b435de0 | 622 | width = (flags & SDIO_REQ_4BYTE) ? 4 : 2; |
356bae6f | 623 | brcmf_sdio_addrprep(sdiodev, width, &addr); |
5b435de0 | 624 | |
b05e9254 | 625 | err = brcmf_sdio_buffrw(sdiodev, fn, true, addr, pktq); |
7057fd00 | 626 | |
7057fd00 | 627 | return err; |
5b435de0 AS |
628 | } |
629 | ||
ba540b01 FL |
630 | int |
631 | brcmf_sdio_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address, | |
632 | u8 *data, uint size) | |
5b435de0 | 633 | { |
ba540b01 FL |
634 | int bcmerror = 0; |
635 | struct sk_buff *pkt; | |
636 | u32 sdaddr; | |
637 | uint dsize; | |
354b75bf | 638 | struct sk_buff_head pkt_list; |
ba540b01 FL |
639 | |
640 | dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); | |
641 | pkt = dev_alloc_skb(dsize); | |
642 | if (!pkt) { | |
643 | brcmf_err("dev_alloc_skb failed: len %d\n", dsize); | |
644 | return -EIO; | |
645 | } | |
646 | pkt->priority = 0; | |
354b75bf | 647 | skb_queue_head_init(&pkt_list); |
4c6e869d | 648 | |
ba540b01 FL |
649 | /* Determine initial transfer parameters */ |
650 | sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK; | |
651 | if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK) | |
652 | dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr); | |
653 | else | |
654 | dsize = size; | |
5b435de0 | 655 | |
ba540b01 FL |
656 | sdio_claim_host(sdiodev->func[1]); |
657 | ||
658 | /* Do the transfer(s) */ | |
659 | while (size) { | |
660 | /* Set the backplane window to include the start address */ | |
661 | bcmerror = brcmf_sdcard_set_sbaddr_window(sdiodev, address); | |
662 | if (bcmerror) | |
663 | break; | |
664 | ||
665 | brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n", | |
666 | write ? "write" : "read", dsize, | |
667 | sdaddr, address & SBSDIO_SBWINDOW_MASK); | |
668 | ||
669 | sdaddr &= SBSDIO_SB_OFT_ADDR_MASK; | |
670 | sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
671 | ||
672 | skb_put(pkt, dsize); | |
673 | if (write) | |
674 | memcpy(pkt->data, data, dsize); | |
354b75bf | 675 | skb_queue_tail(&pkt_list, pkt); |
78b3f1c5 | 676 | bcmerror = brcmf_sdio_buffrw(sdiodev, SDIO_FUNC_1, write, |
354b75bf FL |
677 | sdaddr, &pkt_list); |
678 | skb_dequeue_tail(&pkt_list); | |
ba540b01 FL |
679 | if (bcmerror) { |
680 | brcmf_err("membytes transfer failed\n"); | |
681 | break; | |
682 | } | |
683 | if (!write) | |
684 | memcpy(data, pkt->data, dsize); | |
685 | skb_trim(pkt, dsize); | |
686 | ||
687 | /* Adjust for next transfer (if any) */ | |
688 | size -= dsize; | |
689 | if (size) { | |
690 | data += dsize; | |
691 | address += dsize; | |
692 | sdaddr = 0; | |
693 | dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); | |
694 | } | |
4c6e869d AS |
695 | } |
696 | ||
ba540b01 | 697 | dev_kfree_skb(pkt); |
4c6e869d | 698 | |
ba540b01 FL |
699 | /* Return the window to backplane enumeration space for core access */ |
700 | if (brcmf_sdcard_set_sbaddr_window(sdiodev, sdiodev->sbwad)) | |
701 | brcmf_err("FAILED to set window back to 0x%x\n", | |
702 | sdiodev->sbwad); | |
4c6e869d | 703 | |
ba540b01 | 704 | sdio_release_host(sdiodev->func[1]); |
4c6e869d | 705 | |
ba540b01 | 706 | return bcmerror; |
5b435de0 AS |
707 | } |
708 | ||
709 | int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn) | |
710 | { | |
711 | char t_func = (char)fn; | |
c3203374 | 712 | brcmf_dbg(SDIO, "Enter\n"); |
5b435de0 AS |
713 | |
714 | /* issue abort cmd52 command through F0 */ | |
715 | brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0, | |
716 | SDIO_CCCR_ABORT, &t_func); | |
717 | ||
c3203374 | 718 | brcmf_dbg(SDIO, "Exit\n"); |
5b435de0 AS |
719 | return 0; |
720 | } | |
721 | ||
722 | int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev) | |
723 | { | |
724 | u32 regs = 0; | |
725 | int ret = 0; | |
726 | ||
727 | ret = brcmf_sdioh_attach(sdiodev); | |
728 | if (ret) | |
729 | goto out; | |
730 | ||
731 | regs = SI_ENUM_BASE; | |
732 | ||
5b435de0 | 733 | /* try to attach to the target device */ |
4175b88b | 734 | sdiodev->bus = brcmf_sdbrcm_probe(regs, sdiodev); |
5b435de0 | 735 | if (!sdiodev->bus) { |
5e8149f5 | 736 | brcmf_err("device attach failed\n"); |
5b435de0 AS |
737 | ret = -ENODEV; |
738 | goto out; | |
739 | } | |
740 | ||
741 | out: | |
742 | if (ret) | |
743 | brcmf_sdio_remove(sdiodev); | |
744 | ||
745 | return ret; | |
746 | } | |
747 | EXPORT_SYMBOL(brcmf_sdio_probe); | |
748 | ||
749 | int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev) | |
750 | { | |
2def5c10 HM |
751 | sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
752 | ||
5b435de0 AS |
753 | if (sdiodev->bus) { |
754 | brcmf_sdbrcm_disconnect(sdiodev->bus); | |
755 | sdiodev->bus = NULL; | |
756 | } | |
757 | ||
758 | brcmf_sdioh_detach(sdiodev); | |
759 | ||
760 | sdiodev->sbwad = 0; | |
761 | ||
762 | return 0; | |
763 | } | |
764 | EXPORT_SYMBOL(brcmf_sdio_remove); | |
765 | ||
766 | void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable) | |
767 | { | |
768 | if (enable) | |
769 | brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS); | |
770 | else | |
771 | brcmf_sdbrcm_wd_timer(sdiodev->bus, 0); | |
772 | } |