Commit | Line | Data |
---|---|---|
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 | ||
5b435de0 AS |
165 | int |
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 | ||
4531603a | 196 | int |
e9b8d91d FL |
197 | brcmf_sdio_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr, |
198 | void *data, bool write) | |
199 | { | |
200 | u8 func_num, reg_size; | |
201 | u32 bar; | |
202 | s32 retry = 0; | |
203 | int ret; | |
204 | ||
205 | /* | |
206 | * figure out how to read the register based on address range | |
d8b3fc59 | 207 | * 0x00 ~ 0x7FF: function 0 CCCR and FBR |
e9b8d91d FL |
208 | * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers |
209 | * The rest: function 1 silicon backplane core registers | |
210 | */ | |
d8b3fc59 | 211 | if ((addr & ~REG_F0_REG_MASK) == 0) { |
e9b8d91d FL |
212 | func_num = SDIO_FUNC_0; |
213 | reg_size = 1; | |
214 | } else if ((addr & ~REG_F1_MISC_MASK) == 0) { | |
215 | func_num = SDIO_FUNC_1; | |
216 | reg_size = 1; | |
217 | } else { | |
218 | func_num = SDIO_FUNC_1; | |
219 | reg_size = 4; | |
220 | ||
221 | /* Set the window for SB core register */ | |
222 | bar = addr & ~SBSDIO_SB_OFT_ADDR_MASK; | |
223 | if (bar != sdiodev->sbwad) { | |
224 | ret = brcmf_sdcard_set_sbaddr_window(sdiodev, bar); | |
225 | if (ret != 0) { | |
226 | memset(data, 0xFF, reg_size); | |
227 | return ret; | |
228 | } | |
229 | sdiodev->sbwad = bar; | |
230 | } | |
231 | addr &= SBSDIO_SB_OFT_ADDR_MASK; | |
232 | addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
233 | } | |
234 | ||
235 | do { | |
236 | if (!write) | |
237 | memset(data, 0, reg_size); | |
238 | if (retry) /* wait for 1 ms till bus get settled down */ | |
239 | usleep_range(1000, 2000); | |
240 | if (reg_size == 1) | |
241 | ret = brcmf_sdioh_request_byte(sdiodev, write, | |
242 | func_num, addr, data); | |
243 | else | |
244 | ret = brcmf_sdioh_request_word(sdiodev, write, | |
245 | func_num, addr, data, 4); | |
246 | } while (ret != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT); | |
247 | ||
5c15c23a | 248 | if (ret != 0) |
5e8149f5 | 249 | brcmf_err("failed with %d\n", ret); |
e9b8d91d FL |
250 | |
251 | return ret; | |
252 | } | |
253 | ||
254 | u8 brcmf_sdio_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) | |
255 | { | |
256 | u8 data; | |
257 | int retval; | |
258 | ||
c3203374 | 259 | brcmf_dbg(SDIO, "addr:0x%08x\n", addr); |
e9b8d91d | 260 | retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false); |
c3203374 | 261 | brcmf_dbg(SDIO, "data:0x%02x\n", data); |
e9b8d91d FL |
262 | |
263 | if (ret) | |
264 | *ret = retval; | |
265 | ||
266 | return data; | |
267 | } | |
268 | ||
269 | u32 brcmf_sdio_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) | |
270 | { | |
271 | u32 data; | |
272 | int retval; | |
273 | ||
c3203374 | 274 | brcmf_dbg(SDIO, "addr:0x%08x\n", addr); |
e9b8d91d | 275 | retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false); |
c3203374 | 276 | brcmf_dbg(SDIO, "data:0x%08x\n", data); |
e9b8d91d FL |
277 | |
278 | if (ret) | |
279 | *ret = retval; | |
280 | ||
281 | return data; | |
282 | } | |
283 | ||
284 | void brcmf_sdio_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, | |
285 | u8 data, int *ret) | |
286 | { | |
287 | int retval; | |
288 | ||
c3203374 | 289 | brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data); |
e9b8d91d FL |
290 | retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true); |
291 | ||
292 | if (ret) | |
293 | *ret = retval; | |
294 | } | |
295 | ||
296 | void brcmf_sdio_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, | |
297 | u32 data, int *ret) | |
298 | { | |
299 | int retval; | |
300 | ||
c3203374 | 301 | brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data); |
e9b8d91d FL |
302 | retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true); |
303 | ||
304 | if (ret) | |
305 | *ret = retval; | |
306 | } | |
307 | ||
78b3f1c5 FL |
308 | /** |
309 | * brcmf_sdio_buffrw - SDIO interface function for block data access | |
310 | * @sdiodev: brcmfmac sdio device | |
311 | * @fn: SDIO function number | |
312 | * @write: direction flag | |
313 | * @addr: dongle memory address as source/destination | |
314 | * @pkt: skb pointer | |
315 | * | |
316 | * This function takes the respbonsibility as the interface function to MMC | |
317 | * stack for block data access. It assumes that the skb passed down by the | |
318 | * caller has already been padded and aligned. | |
319 | */ | |
320 | static int brcmf_sdio_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn, | |
354b75bf | 321 | bool write, u32 addr, struct sk_buff_head *pktlist) |
78b3f1c5 | 322 | { |
354b75bf FL |
323 | unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset; |
324 | unsigned int max_blks, max_req_sz; | |
325 | unsigned short max_seg_sz, seg_sz; | |
326 | unsigned char *pkt_data; | |
327 | struct sk_buff *pkt_next = NULL; | |
328 | struct mmc_request mmc_req; | |
329 | struct mmc_command mmc_cmd; | |
330 | struct mmc_data mmc_dat; | |
331 | struct sg_table st; | |
332 | struct scatterlist *sgl; | |
333 | struct mmc_host *host; | |
334 | int ret = 0; | |
335 | ||
336 | if (!pktlist->qlen) | |
337 | return -EINVAL; | |
78b3f1c5 FL |
338 | |
339 | brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait); | |
340 | if (brcmf_pm_resume_error(sdiodev)) | |
341 | return -EIO; | |
342 | ||
343 | /* Single skb use the standard mmc interface */ | |
354b75bf FL |
344 | if (pktlist->qlen == 1) { |
345 | pkt_next = pktlist->next; | |
346 | req_sz = pkt_next->len + 3; | |
347 | req_sz &= (uint)~3; | |
78b3f1c5 FL |
348 | |
349 | if (write) | |
350 | return sdio_memcpy_toio(sdiodev->func[fn], addr, | |
354b75bf FL |
351 | ((u8 *)(pkt_next->data)), |
352 | req_sz); | |
78b3f1c5 FL |
353 | else if (fn == 1) |
354 | return sdio_memcpy_fromio(sdiodev->func[fn], | |
354b75bf FL |
355 | ((u8 *)(pkt_next->data)), |
356 | addr, req_sz); | |
78b3f1c5 FL |
357 | else |
358 | /* function 2 read is FIFO operation */ | |
359 | return sdio_readsb(sdiodev->func[fn], | |
354b75bf FL |
360 | ((u8 *)(pkt_next->data)), addr, |
361 | req_sz); | |
78b3f1c5 FL |
362 | } |
363 | ||
354b75bf FL |
364 | host = sdiodev->func[fn]->card->host; |
365 | func_blk_sz = sdiodev->func[fn]->cur_blksize; | |
366 | /* Blocks per command is limited by host count, host transfer | |
367 | * size and the maximum for IO_RW_EXTENDED of 511 blocks. | |
368 | */ | |
369 | max_blks = min_t(unsigned int, host->max_blk_count, 511u); | |
370 | max_req_sz = min_t(unsigned int, host->max_req_size, | |
371 | max_blks * func_blk_sz); | |
372 | max_seg_sz = min_t(unsigned short, host->max_segs, SG_MAX_SINGLE_ALLOC); | |
373 | max_seg_sz = min_t(unsigned short, max_seg_sz, pktlist->qlen); | |
374 | seg_sz = pktlist->qlen; | |
375 | pkt_offset = 0; | |
376 | pkt_next = pktlist->next; | |
377 | ||
378 | if (sg_alloc_table(&st, max_seg_sz, GFP_KERNEL)) | |
379 | return -ENOMEM; | |
380 | ||
381 | while (seg_sz) { | |
382 | req_sz = 0; | |
383 | sg_cnt = 0; | |
384 | memset(&mmc_req, 0, sizeof(struct mmc_request)); | |
385 | memset(&mmc_cmd, 0, sizeof(struct mmc_command)); | |
386 | memset(&mmc_dat, 0, sizeof(struct mmc_data)); | |
387 | sgl = st.sgl; | |
388 | /* prep sg table */ | |
389 | while (pkt_next != (struct sk_buff *)pktlist) { | |
390 | pkt_data = pkt_next->data + pkt_offset; | |
391 | sg_data_sz = pkt_next->len - pkt_offset; | |
392 | if (sg_data_sz > host->max_seg_size) | |
393 | sg_data_sz = host->max_seg_size; | |
394 | if (sg_data_sz > max_req_sz - req_sz) | |
395 | sg_data_sz = max_req_sz - req_sz; | |
396 | ||
397 | sg_set_buf(sgl, pkt_data, sg_data_sz); | |
398 | ||
399 | sg_cnt++; | |
400 | sgl = sg_next(sgl); | |
401 | req_sz += sg_data_sz; | |
402 | pkt_offset += sg_data_sz; | |
403 | if (pkt_offset == pkt_next->len) { | |
404 | pkt_offset = 0; | |
405 | pkt_next = pkt_next->next; | |
406 | } | |
407 | ||
408 | if (req_sz >= max_req_sz || sg_cnt >= max_seg_sz) | |
409 | break; | |
410 | } | |
411 | seg_sz -= sg_cnt; | |
412 | ||
413 | if (req_sz % func_blk_sz != 0) { | |
414 | brcmf_err("sg request length %u is not %u aligned\n", | |
415 | req_sz, func_blk_sz); | |
416 | sg_free_table(&st); | |
417 | return -ENOTBLK; | |
418 | } | |
419 | mmc_dat.sg = st.sgl; | |
420 | mmc_dat.sg_len = sg_cnt; | |
421 | mmc_dat.blksz = func_blk_sz; | |
422 | mmc_dat.blocks = req_sz / func_blk_sz; | |
423 | mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; | |
424 | mmc_cmd.opcode = SD_IO_RW_EXTENDED; | |
425 | mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */ | |
426 | mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */ | |
427 | mmc_cmd.arg |= 1<<27; /* block mode */ | |
428 | /* incrementing addr for function 1 */ | |
429 | mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0; | |
430 | mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */ | |
431 | mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */ | |
432 | mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC; | |
433 | mmc_req.cmd = &mmc_cmd; | |
434 | mmc_req.data = &mmc_dat; | |
435 | if (fn == 1) | |
436 | addr += req_sz; | |
437 | ||
438 | mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card); | |
439 | mmc_wait_for_req(host, &mmc_req); | |
440 | ||
441 | ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error; | |
442 | if (ret != 0) { | |
443 | brcmf_err("CMD53 sg block %s failed %d\n", | |
444 | write ? "write" : "read", ret); | |
445 | ret = -EIO; | |
446 | break; | |
447 | } | |
448 | } | |
449 | ||
450 | sg_free_table(&st); | |
451 | ||
452 | return ret; | |
78b3f1c5 FL |
453 | } |
454 | ||
5adfeb63 | 455 | static int brcmf_sdcard_recv_prepare(struct brcmf_sdio_dev *sdiodev, uint fn, |
b058d4d2 | 456 | uint width, u32 *addr) |
5b435de0 | 457 | { |
5adfeb63 | 458 | uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK; |
5b435de0 AS |
459 | int err = 0; |
460 | ||
5b435de0 AS |
461 | if (bar0 != sdiodev->sbwad) { |
462 | err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0); | |
463 | if (err) | |
464 | return err; | |
465 | ||
466 | sdiodev->sbwad = bar0; | |
467 | } | |
468 | ||
5adfeb63 AS |
469 | *addr &= SBSDIO_SB_OFT_ADDR_MASK; |
470 | ||
471 | if (width == 4) | |
472 | *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
473 | ||
474 | return 0; | |
475 | } | |
476 | ||
477 | int | |
478 | brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, | |
479 | uint flags, u8 *buf, uint nbytes) | |
480 | { | |
481 | struct sk_buff *mypkt; | |
482 | int err; | |
483 | ||
484 | mypkt = brcmu_pkt_buf_get_skb(nbytes); | |
485 | if (!mypkt) { | |
5e8149f5 | 486 | brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", |
5adfeb63 AS |
487 | nbytes); |
488 | return -EIO; | |
489 | } | |
490 | ||
491 | err = brcmf_sdcard_recv_pkt(sdiodev, addr, fn, flags, mypkt); | |
492 | if (!err) | |
493 | memcpy(buf, mypkt->data, nbytes); | |
494 | ||
495 | brcmu_pkt_buf_free_skb(mypkt); | |
496 | return err; | |
497 | } | |
498 | ||
499 | int | |
500 | brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, | |
501 | uint flags, struct sk_buff *pkt) | |
502 | { | |
5adfeb63 AS |
503 | uint width; |
504 | int err = 0; | |
354b75bf | 505 | struct sk_buff_head pkt_list; |
5adfeb63 | 506 | |
c3203374 | 507 | brcmf_dbg(SDIO, "fun = %d, addr = 0x%x, size = %d\n", |
5adfeb63 AS |
508 | fn, addr, pkt->len); |
509 | ||
510 | width = (flags & SDIO_REQ_4BYTE) ? 4 : 2; | |
b058d4d2 | 511 | err = brcmf_sdcard_recv_prepare(sdiodev, fn, width, &addr); |
5adfeb63 | 512 | if (err) |
7057fd00 | 513 | goto done; |
5b435de0 | 514 | |
354b75bf FL |
515 | skb_queue_head_init(&pkt_list); |
516 | skb_queue_tail(&pkt_list, pkt); | |
517 | err = brcmf_sdio_buffrw(sdiodev, fn, false, addr, &pkt_list); | |
518 | skb_dequeue_tail(&pkt_list); | |
5adfeb63 | 519 | |
7057fd00 | 520 | done: |
5adfeb63 AS |
521 | return err; |
522 | } | |
523 | ||
524 | int brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, | |
525 | uint flags, struct sk_buff_head *pktq) | |
526 | { | |
527 | uint incr_fix; | |
528 | uint width; | |
529 | int err = 0; | |
530 | ||
c3203374 | 531 | brcmf_dbg(SDIO, "fun = %d, addr = 0x%x, size = %d\n", |
5adfeb63 AS |
532 | fn, addr, pktq->qlen); |
533 | ||
5b435de0 | 534 | width = (flags & SDIO_REQ_4BYTE) ? 4 : 2; |
b058d4d2 | 535 | err = brcmf_sdcard_recv_prepare(sdiodev, fn, width, &addr); |
5adfeb63 | 536 | if (err) |
7057fd00 | 537 | goto done; |
5b435de0 | 538 | |
5adfeb63 | 539 | incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC; |
354b75bf | 540 | err = brcmf_sdio_buffrw(sdiodev, fn, false, addr, pktq); |
5b435de0 | 541 | |
7057fd00 | 542 | done: |
5adfeb63 | 543 | return err; |
5b435de0 AS |
544 | } |
545 | ||
546 | int | |
547 | brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, | |
5adfeb63 AS |
548 | uint flags, u8 *buf, uint nbytes) |
549 | { | |
550 | struct sk_buff *mypkt; | |
551 | int err; | |
552 | ||
553 | mypkt = brcmu_pkt_buf_get_skb(nbytes); | |
554 | if (!mypkt) { | |
5e8149f5 | 555 | brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", |
5adfeb63 AS |
556 | nbytes); |
557 | return -EIO; | |
558 | } | |
559 | ||
560 | memcpy(mypkt->data, buf, nbytes); | |
561 | err = brcmf_sdcard_send_pkt(sdiodev, addr, fn, flags, mypkt); | |
562 | ||
563 | brcmu_pkt_buf_free_skb(mypkt); | |
564 | return err; | |
565 | ||
566 | } | |
567 | ||
568 | int | |
569 | brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, | |
570 | uint flags, struct sk_buff *pkt) | |
5b435de0 | 571 | { |
5b435de0 AS |
572 | uint width; |
573 | uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK; | |
574 | int err = 0; | |
354b75bf | 575 | struct sk_buff_head pkt_list; |
5b435de0 | 576 | |
c3203374 | 577 | brcmf_dbg(SDIO, "fun = %d, addr = 0x%x, size = %d\n", |
5adfeb63 | 578 | fn, addr, pkt->len); |
5b435de0 | 579 | |
5b435de0 AS |
580 | if (bar0 != sdiodev->sbwad) { |
581 | err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0); | |
582 | if (err) | |
7057fd00 | 583 | goto done; |
5b435de0 AS |
584 | |
585 | sdiodev->sbwad = bar0; | |
586 | } | |
587 | ||
588 | addr &= SBSDIO_SB_OFT_ADDR_MASK; | |
589 | ||
5b435de0 AS |
590 | width = (flags & SDIO_REQ_4BYTE) ? 4 : 2; |
591 | if (width == 4) | |
592 | addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
593 | ||
354b75bf FL |
594 | skb_queue_head_init(&pkt_list); |
595 | skb_queue_tail(&pkt_list, pkt); | |
596 | err = brcmf_sdio_buffrw(sdiodev, fn, true, addr, &pkt_list); | |
597 | skb_dequeue_tail(&pkt_list); | |
7057fd00 FL |
598 | |
599 | done: | |
7057fd00 | 600 | return err; |
5b435de0 AS |
601 | } |
602 | ||
ba540b01 FL |
603 | int |
604 | brcmf_sdio_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address, | |
605 | u8 *data, uint size) | |
5b435de0 | 606 | { |
ba540b01 FL |
607 | int bcmerror = 0; |
608 | struct sk_buff *pkt; | |
609 | u32 sdaddr; | |
610 | uint dsize; | |
354b75bf | 611 | struct sk_buff_head pkt_list; |
ba540b01 FL |
612 | |
613 | dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); | |
614 | pkt = dev_alloc_skb(dsize); | |
615 | if (!pkt) { | |
616 | brcmf_err("dev_alloc_skb failed: len %d\n", dsize); | |
617 | return -EIO; | |
618 | } | |
619 | pkt->priority = 0; | |
354b75bf | 620 | skb_queue_head_init(&pkt_list); |
4c6e869d | 621 | |
ba540b01 FL |
622 | /* Determine initial transfer parameters */ |
623 | sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK; | |
624 | if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK) | |
625 | dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr); | |
626 | else | |
627 | dsize = size; | |
5b435de0 | 628 | |
ba540b01 FL |
629 | sdio_claim_host(sdiodev->func[1]); |
630 | ||
631 | /* Do the transfer(s) */ | |
632 | while (size) { | |
633 | /* Set the backplane window to include the start address */ | |
634 | bcmerror = brcmf_sdcard_set_sbaddr_window(sdiodev, address); | |
635 | if (bcmerror) | |
636 | break; | |
637 | ||
638 | brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n", | |
639 | write ? "write" : "read", dsize, | |
640 | sdaddr, address & SBSDIO_SBWINDOW_MASK); | |
641 | ||
642 | sdaddr &= SBSDIO_SB_OFT_ADDR_MASK; | |
643 | sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
644 | ||
645 | skb_put(pkt, dsize); | |
646 | if (write) | |
647 | memcpy(pkt->data, data, dsize); | |
354b75bf | 648 | skb_queue_tail(&pkt_list, pkt); |
78b3f1c5 | 649 | bcmerror = brcmf_sdio_buffrw(sdiodev, SDIO_FUNC_1, write, |
354b75bf FL |
650 | sdaddr, &pkt_list); |
651 | skb_dequeue_tail(&pkt_list); | |
ba540b01 FL |
652 | if (bcmerror) { |
653 | brcmf_err("membytes transfer failed\n"); | |
654 | break; | |
655 | } | |
656 | if (!write) | |
657 | memcpy(data, pkt->data, dsize); | |
658 | skb_trim(pkt, dsize); | |
659 | ||
660 | /* Adjust for next transfer (if any) */ | |
661 | size -= dsize; | |
662 | if (size) { | |
663 | data += dsize; | |
664 | address += dsize; | |
665 | sdaddr = 0; | |
666 | dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); | |
667 | } | |
4c6e869d AS |
668 | } |
669 | ||
ba540b01 | 670 | dev_kfree_skb(pkt); |
4c6e869d | 671 | |
ba540b01 FL |
672 | /* Return the window to backplane enumeration space for core access */ |
673 | if (brcmf_sdcard_set_sbaddr_window(sdiodev, sdiodev->sbwad)) | |
674 | brcmf_err("FAILED to set window back to 0x%x\n", | |
675 | sdiodev->sbwad); | |
4c6e869d | 676 | |
ba540b01 | 677 | sdio_release_host(sdiodev->func[1]); |
4c6e869d | 678 | |
ba540b01 | 679 | return bcmerror; |
5b435de0 AS |
680 | } |
681 | ||
682 | int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn) | |
683 | { | |
684 | char t_func = (char)fn; | |
c3203374 | 685 | brcmf_dbg(SDIO, "Enter\n"); |
5b435de0 AS |
686 | |
687 | /* issue abort cmd52 command through F0 */ | |
688 | brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0, | |
689 | SDIO_CCCR_ABORT, &t_func); | |
690 | ||
c3203374 | 691 | brcmf_dbg(SDIO, "Exit\n"); |
5b435de0 AS |
692 | return 0; |
693 | } | |
694 | ||
695 | int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev) | |
696 | { | |
697 | u32 regs = 0; | |
698 | int ret = 0; | |
699 | ||
700 | ret = brcmf_sdioh_attach(sdiodev); | |
701 | if (ret) | |
702 | goto out; | |
703 | ||
704 | regs = SI_ENUM_BASE; | |
705 | ||
5b435de0 | 706 | /* try to attach to the target device */ |
4175b88b | 707 | sdiodev->bus = brcmf_sdbrcm_probe(regs, sdiodev); |
5b435de0 | 708 | if (!sdiodev->bus) { |
5e8149f5 | 709 | brcmf_err("device attach failed\n"); |
5b435de0 AS |
710 | ret = -ENODEV; |
711 | goto out; | |
712 | } | |
713 | ||
714 | out: | |
715 | if (ret) | |
716 | brcmf_sdio_remove(sdiodev); | |
717 | ||
718 | return ret; | |
719 | } | |
720 | EXPORT_SYMBOL(brcmf_sdio_probe); | |
721 | ||
722 | int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev) | |
723 | { | |
2def5c10 HM |
724 | sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
725 | ||
5b435de0 AS |
726 | if (sdiodev->bus) { |
727 | brcmf_sdbrcm_disconnect(sdiodev->bus); | |
728 | sdiodev->bus = NULL; | |
729 | } | |
730 | ||
731 | brcmf_sdioh_detach(sdiodev); | |
732 | ||
733 | sdiodev->sbwad = 0; | |
734 | ||
735 | return 0; | |
736 | } | |
737 | EXPORT_SYMBOL(brcmf_sdio_remove); | |
738 | ||
739 | void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable) | |
740 | { | |
741 | if (enable) | |
742 | brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS); | |
743 | else | |
744 | brcmf_sdbrcm_wd_timer(sdiodev->bus, 0); | |
745 | } |