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> | |
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 | ||
5b435de0 AS |
163 | int |
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 | ||
4531603a | 194 | int |
e9b8d91d FL |
195 | brcmf_sdio_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr, |
196 | void *data, bool write) | |
197 | { | |
198 | u8 func_num, reg_size; | |
199 | u32 bar; | |
200 | s32 retry = 0; | |
201 | int ret; | |
202 | ||
203 | /* | |
204 | * figure out how to read the register based on address range | |
d8b3fc59 | 205 | * 0x00 ~ 0x7FF: function 0 CCCR and FBR |
e9b8d91d FL |
206 | * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers |
207 | * The rest: function 1 silicon backplane core registers | |
208 | */ | |
d8b3fc59 | 209 | if ((addr & ~REG_F0_REG_MASK) == 0) { |
e9b8d91d FL |
210 | func_num = SDIO_FUNC_0; |
211 | reg_size = 1; | |
212 | } else if ((addr & ~REG_F1_MISC_MASK) == 0) { | |
213 | func_num = SDIO_FUNC_1; | |
214 | reg_size = 1; | |
215 | } else { | |
216 | func_num = SDIO_FUNC_1; | |
217 | reg_size = 4; | |
218 | ||
219 | /* Set the window for SB core register */ | |
220 | bar = addr & ~SBSDIO_SB_OFT_ADDR_MASK; | |
221 | if (bar != sdiodev->sbwad) { | |
222 | ret = brcmf_sdcard_set_sbaddr_window(sdiodev, bar); | |
223 | if (ret != 0) { | |
224 | memset(data, 0xFF, reg_size); | |
225 | return ret; | |
226 | } | |
227 | sdiodev->sbwad = bar; | |
228 | } | |
229 | addr &= SBSDIO_SB_OFT_ADDR_MASK; | |
230 | addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
231 | } | |
232 | ||
233 | do { | |
234 | if (!write) | |
235 | memset(data, 0, reg_size); | |
236 | if (retry) /* wait for 1 ms till bus get settled down */ | |
237 | usleep_range(1000, 2000); | |
238 | if (reg_size == 1) | |
239 | ret = brcmf_sdioh_request_byte(sdiodev, write, | |
240 | func_num, addr, data); | |
241 | else | |
242 | ret = brcmf_sdioh_request_word(sdiodev, write, | |
243 | func_num, addr, data, 4); | |
244 | } while (ret != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT); | |
245 | ||
5c15c23a | 246 | if (ret != 0) |
5e8149f5 | 247 | brcmf_err("failed with %d\n", ret); |
e9b8d91d FL |
248 | |
249 | return ret; | |
250 | } | |
251 | ||
252 | u8 brcmf_sdio_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) | |
253 | { | |
254 | u8 data; | |
255 | int retval; | |
256 | ||
c3203374 | 257 | brcmf_dbg(SDIO, "addr:0x%08x\n", addr); |
e9b8d91d | 258 | retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false); |
c3203374 | 259 | brcmf_dbg(SDIO, "data:0x%02x\n", data); |
e9b8d91d FL |
260 | |
261 | if (ret) | |
262 | *ret = retval; | |
263 | ||
264 | return data; | |
265 | } | |
266 | ||
267 | u32 brcmf_sdio_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) | |
268 | { | |
269 | u32 data; | |
270 | int retval; | |
271 | ||
c3203374 | 272 | brcmf_dbg(SDIO, "addr:0x%08x\n", addr); |
e9b8d91d | 273 | retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false); |
c3203374 | 274 | brcmf_dbg(SDIO, "data:0x%08x\n", data); |
e9b8d91d FL |
275 | |
276 | if (ret) | |
277 | *ret = retval; | |
278 | ||
279 | return data; | |
280 | } | |
281 | ||
282 | void brcmf_sdio_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, | |
283 | u8 data, int *ret) | |
284 | { | |
285 | int retval; | |
286 | ||
c3203374 | 287 | brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data); |
e9b8d91d FL |
288 | retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true); |
289 | ||
290 | if (ret) | |
291 | *ret = retval; | |
292 | } | |
293 | ||
294 | void brcmf_sdio_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, | |
295 | u32 data, int *ret) | |
296 | { | |
297 | int retval; | |
298 | ||
c3203374 | 299 | brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data); |
e9b8d91d FL |
300 | retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true); |
301 | ||
302 | if (ret) | |
303 | *ret = retval; | |
304 | } | |
305 | ||
78b3f1c5 FL |
306 | /** |
307 | * brcmf_sdio_buffrw - SDIO interface function for block data access | |
308 | * @sdiodev: brcmfmac sdio device | |
309 | * @fn: SDIO function number | |
310 | * @write: direction flag | |
311 | * @addr: dongle memory address as source/destination | |
312 | * @pkt: skb pointer | |
313 | * | |
314 | * This function takes the respbonsibility as the interface function to MMC | |
315 | * stack for block data access. It assumes that the skb passed down by the | |
316 | * caller has already been padded and aligned. | |
317 | */ | |
318 | static int brcmf_sdio_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn, | |
319 | bool write, u32 addr, struct sk_buff *pkt) | |
320 | { | |
321 | uint len; | |
322 | ||
323 | brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait); | |
324 | if (brcmf_pm_resume_error(sdiodev)) | |
325 | return -EIO; | |
326 | ||
327 | /* Single skb use the standard mmc interface */ | |
328 | if (!pkt->next) { | |
329 | len = pkt->len + 3; | |
330 | len &= (uint)~3; | |
331 | ||
332 | if (write) | |
333 | return sdio_memcpy_toio(sdiodev->func[fn], addr, | |
334 | ((u8 *)(pkt->data)), len); | |
335 | else if (fn == 1) | |
336 | return sdio_memcpy_fromio(sdiodev->func[fn], | |
337 | ((u8 *)(pkt->data)), addr, | |
338 | len); | |
339 | else | |
340 | /* function 2 read is FIFO operation */ | |
341 | return sdio_readsb(sdiodev->func[fn], | |
342 | ((u8 *)(pkt->data)), addr, len); | |
343 | } | |
344 | ||
345 | brcmf_err("skb chain is not supported yet.\n"); | |
346 | return -EOPNOTSUPP; | |
347 | } | |
348 | ||
5adfeb63 AS |
349 | static int brcmf_sdcard_recv_prepare(struct brcmf_sdio_dev *sdiodev, uint fn, |
350 | uint flags, uint width, u32 *addr) | |
5b435de0 | 351 | { |
5adfeb63 | 352 | uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK; |
5b435de0 AS |
353 | int err = 0; |
354 | ||
5b435de0 AS |
355 | /* Async not implemented yet */ |
356 | if (flags & SDIO_REQ_ASYNC) | |
357 | return -ENOTSUPP; | |
358 | ||
359 | if (bar0 != sdiodev->sbwad) { | |
360 | err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0); | |
361 | if (err) | |
362 | return err; | |
363 | ||
364 | sdiodev->sbwad = bar0; | |
365 | } | |
366 | ||
5adfeb63 AS |
367 | *addr &= SBSDIO_SB_OFT_ADDR_MASK; |
368 | ||
369 | if (width == 4) | |
370 | *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
371 | ||
372 | return 0; | |
373 | } | |
374 | ||
375 | int | |
376 | brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, | |
377 | uint flags, u8 *buf, uint nbytes) | |
378 | { | |
379 | struct sk_buff *mypkt; | |
380 | int err; | |
381 | ||
382 | mypkt = brcmu_pkt_buf_get_skb(nbytes); | |
383 | if (!mypkt) { | |
5e8149f5 | 384 | brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", |
5adfeb63 AS |
385 | nbytes); |
386 | return -EIO; | |
387 | } | |
388 | ||
389 | err = brcmf_sdcard_recv_pkt(sdiodev, addr, fn, flags, mypkt); | |
390 | if (!err) | |
391 | memcpy(buf, mypkt->data, nbytes); | |
392 | ||
393 | brcmu_pkt_buf_free_skb(mypkt); | |
394 | return err; | |
395 | } | |
396 | ||
397 | int | |
398 | brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, | |
399 | uint flags, struct sk_buff *pkt) | |
400 | { | |
5adfeb63 AS |
401 | uint width; |
402 | int err = 0; | |
403 | ||
c3203374 | 404 | brcmf_dbg(SDIO, "fun = %d, addr = 0x%x, size = %d\n", |
5adfeb63 AS |
405 | fn, addr, pkt->len); |
406 | ||
407 | width = (flags & SDIO_REQ_4BYTE) ? 4 : 2; | |
408 | err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr); | |
409 | if (err) | |
7057fd00 | 410 | goto done; |
5b435de0 | 411 | |
78b3f1c5 | 412 | err = brcmf_sdio_buffrw(sdiodev, fn, false, addr, pkt); |
5adfeb63 | 413 | |
7057fd00 | 414 | done: |
5adfeb63 AS |
415 | return err; |
416 | } | |
417 | ||
418 | int brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, | |
419 | uint flags, struct sk_buff_head *pktq) | |
420 | { | |
421 | uint incr_fix; | |
422 | uint width; | |
423 | int err = 0; | |
424 | ||
c3203374 | 425 | brcmf_dbg(SDIO, "fun = %d, addr = 0x%x, size = %d\n", |
5adfeb63 AS |
426 | fn, addr, pktq->qlen); |
427 | ||
5b435de0 | 428 | width = (flags & SDIO_REQ_4BYTE) ? 4 : 2; |
5adfeb63 AS |
429 | err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr); |
430 | if (err) | |
7057fd00 | 431 | goto done; |
5b435de0 | 432 | |
5adfeb63 AS |
433 | incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC; |
434 | err = brcmf_sdioh_request_chain(sdiodev, incr_fix, SDIOH_READ, fn, addr, | |
435 | pktq); | |
5b435de0 | 436 | |
7057fd00 | 437 | done: |
5adfeb63 | 438 | return err; |
5b435de0 AS |
439 | } |
440 | ||
441 | int | |
442 | brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, | |
5adfeb63 AS |
443 | uint flags, u8 *buf, uint nbytes) |
444 | { | |
445 | struct sk_buff *mypkt; | |
446 | int err; | |
447 | ||
448 | mypkt = brcmu_pkt_buf_get_skb(nbytes); | |
449 | if (!mypkt) { | |
5e8149f5 | 450 | brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", |
5adfeb63 AS |
451 | nbytes); |
452 | return -EIO; | |
453 | } | |
454 | ||
455 | memcpy(mypkt->data, buf, nbytes); | |
456 | err = brcmf_sdcard_send_pkt(sdiodev, addr, fn, flags, mypkt); | |
457 | ||
458 | brcmu_pkt_buf_free_skb(mypkt); | |
459 | return err; | |
460 | ||
461 | } | |
462 | ||
463 | int | |
464 | brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, | |
465 | uint flags, struct sk_buff *pkt) | |
5b435de0 | 466 | { |
5b435de0 AS |
467 | uint width; |
468 | uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK; | |
469 | int err = 0; | |
470 | ||
c3203374 | 471 | brcmf_dbg(SDIO, "fun = %d, addr = 0x%x, size = %d\n", |
5adfeb63 | 472 | fn, addr, pkt->len); |
5b435de0 AS |
473 | |
474 | /* Async not implemented yet */ | |
475 | if (flags & SDIO_REQ_ASYNC) | |
476 | return -ENOTSUPP; | |
477 | ||
478 | if (bar0 != sdiodev->sbwad) { | |
479 | err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0); | |
480 | if (err) | |
7057fd00 | 481 | goto done; |
5b435de0 AS |
482 | |
483 | sdiodev->sbwad = bar0; | |
484 | } | |
485 | ||
486 | addr &= SBSDIO_SB_OFT_ADDR_MASK; | |
487 | ||
5b435de0 AS |
488 | width = (flags & SDIO_REQ_4BYTE) ? 4 : 2; |
489 | if (width == 4) | |
490 | addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
491 | ||
78b3f1c5 | 492 | err = brcmf_sdio_buffrw(sdiodev, fn, true, addr, pkt); |
7057fd00 FL |
493 | |
494 | done: | |
7057fd00 | 495 | return err; |
5b435de0 AS |
496 | } |
497 | ||
ba540b01 FL |
498 | int |
499 | brcmf_sdio_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address, | |
500 | u8 *data, uint size) | |
5b435de0 | 501 | { |
ba540b01 FL |
502 | int bcmerror = 0; |
503 | struct sk_buff *pkt; | |
504 | u32 sdaddr; | |
505 | uint dsize; | |
506 | ||
507 | dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); | |
508 | pkt = dev_alloc_skb(dsize); | |
509 | if (!pkt) { | |
510 | brcmf_err("dev_alloc_skb failed: len %d\n", dsize); | |
511 | return -EIO; | |
512 | } | |
513 | pkt->priority = 0; | |
4c6e869d | 514 | |
ba540b01 FL |
515 | /* Determine initial transfer parameters */ |
516 | sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK; | |
517 | if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK) | |
518 | dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr); | |
519 | else | |
520 | dsize = size; | |
5b435de0 | 521 | |
ba540b01 FL |
522 | sdio_claim_host(sdiodev->func[1]); |
523 | ||
524 | /* Do the transfer(s) */ | |
525 | while (size) { | |
526 | /* Set the backplane window to include the start address */ | |
527 | bcmerror = brcmf_sdcard_set_sbaddr_window(sdiodev, address); | |
528 | if (bcmerror) | |
529 | break; | |
530 | ||
531 | brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n", | |
532 | write ? "write" : "read", dsize, | |
533 | sdaddr, address & SBSDIO_SBWINDOW_MASK); | |
534 | ||
535 | sdaddr &= SBSDIO_SB_OFT_ADDR_MASK; | |
536 | sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
537 | ||
538 | skb_put(pkt, dsize); | |
539 | if (write) | |
540 | memcpy(pkt->data, data, dsize); | |
78b3f1c5 FL |
541 | bcmerror = brcmf_sdio_buffrw(sdiodev, SDIO_FUNC_1, write, |
542 | sdaddr, pkt); | |
ba540b01 FL |
543 | if (bcmerror) { |
544 | brcmf_err("membytes transfer failed\n"); | |
545 | break; | |
546 | } | |
547 | if (!write) | |
548 | memcpy(data, pkt->data, dsize); | |
549 | skb_trim(pkt, dsize); | |
550 | ||
551 | /* Adjust for next transfer (if any) */ | |
552 | size -= dsize; | |
553 | if (size) { | |
554 | data += dsize; | |
555 | address += dsize; | |
556 | sdaddr = 0; | |
557 | dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); | |
558 | } | |
4c6e869d AS |
559 | } |
560 | ||
ba540b01 | 561 | dev_kfree_skb(pkt); |
4c6e869d | 562 | |
ba540b01 FL |
563 | /* Return the window to backplane enumeration space for core access */ |
564 | if (brcmf_sdcard_set_sbaddr_window(sdiodev, sdiodev->sbwad)) | |
565 | brcmf_err("FAILED to set window back to 0x%x\n", | |
566 | sdiodev->sbwad); | |
4c6e869d | 567 | |
ba540b01 | 568 | sdio_release_host(sdiodev->func[1]); |
4c6e869d | 569 | |
ba540b01 | 570 | return bcmerror; |
5b435de0 AS |
571 | } |
572 | ||
573 | int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn) | |
574 | { | |
575 | char t_func = (char)fn; | |
c3203374 | 576 | brcmf_dbg(SDIO, "Enter\n"); |
5b435de0 AS |
577 | |
578 | /* issue abort cmd52 command through F0 */ | |
579 | brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0, | |
580 | SDIO_CCCR_ABORT, &t_func); | |
581 | ||
c3203374 | 582 | brcmf_dbg(SDIO, "Exit\n"); |
5b435de0 AS |
583 | return 0; |
584 | } | |
585 | ||
586 | int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev) | |
587 | { | |
588 | u32 regs = 0; | |
589 | int ret = 0; | |
590 | ||
591 | ret = brcmf_sdioh_attach(sdiodev); | |
592 | if (ret) | |
593 | goto out; | |
594 | ||
595 | regs = SI_ENUM_BASE; | |
596 | ||
5b435de0 | 597 | /* try to attach to the target device */ |
4175b88b | 598 | sdiodev->bus = brcmf_sdbrcm_probe(regs, sdiodev); |
5b435de0 | 599 | if (!sdiodev->bus) { |
5e8149f5 | 600 | brcmf_err("device attach failed\n"); |
5b435de0 AS |
601 | ret = -ENODEV; |
602 | goto out; | |
603 | } | |
604 | ||
605 | out: | |
606 | if (ret) | |
607 | brcmf_sdio_remove(sdiodev); | |
608 | ||
609 | return ret; | |
610 | } | |
611 | EXPORT_SYMBOL(brcmf_sdio_probe); | |
612 | ||
613 | int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev) | |
614 | { | |
2def5c10 HM |
615 | sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
616 | ||
5b435de0 AS |
617 | if (sdiodev->bus) { |
618 | brcmf_sdbrcm_disconnect(sdiodev->bus); | |
619 | sdiodev->bus = NULL; | |
620 | } | |
621 | ||
622 | brcmf_sdioh_detach(sdiodev); | |
623 | ||
624 | sdiodev->sbwad = 0; | |
625 | ||
626 | return 0; | |
627 | } | |
628 | EXPORT_SYMBOL(brcmf_sdio_remove); | |
629 | ||
630 | void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable) | |
631 | { | |
632 | if (enable) | |
633 | brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS); | |
634 | else | |
635 | brcmf_sdbrcm_wd_timer(sdiodev->bus, 0); | |
636 | } |