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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 | 25 | #include <linux/mmc/sdio.h> |
e2dc9eea | 26 | #include <linux/mmc/core.h> |
5b435de0 AS |
27 | #include <linux/mmc/sdio_func.h> |
28 | #include <linux/mmc/card.h> | |
e2dc9eea AS |
29 | #include <linux/mmc/host.h> |
30 | #include <linux/platform_device.h> | |
668761ac | 31 | #include <linux/platform_data/brcmfmac-sdio.h> |
e2dc9eea AS |
32 | #include <linux/suspend.h> |
33 | #include <linux/errno.h> | |
34 | #include <linux/module.h> | |
35 | #include <net/cfg80211.h> | |
5b435de0 AS |
36 | |
37 | #include <defs.h> | |
38 | #include <brcm_hw_ids.h> | |
39 | #include <brcmu_utils.h> | |
40 | #include <brcmu_wifi.h> | |
41 | #include <soc.h> | |
5b435de0 AS |
42 | #include "dhd_bus.h" |
43 | #include "dhd_dbg.h" | |
44 | #include "sdio_host.h" | |
61f663df | 45 | #include "of.h" |
5b435de0 AS |
46 | |
47 | #define SDIOH_API_ACCESS_RETRY_LIMIT 2 | |
48 | ||
e49b06ba AS |
49 | #define DMA_ALIGN_MASK 0x03 |
50 | ||
51 | #define SDIO_FUNC1_BLOCKSIZE 64 | |
52 | #define SDIO_FUNC2_BLOCKSIZE 512 | |
71370eb8 AS |
53 | /* Maximum milliseconds to wait for F2 to come up */ |
54 | #define SDIO_WAIT_F2RDY 3000 | |
55 | ||
af1fa210 AS |
56 | #define BRCMF_DEFAULT_TXGLOM_SIZE 32 /* max tx frames in glom chain */ |
57 | #define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */ | |
58 | ||
59 | static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE; | |
60 | module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0); | |
61 | MODULE_PARM_DESC(txglomsz, "maximum tx packet chain size [SDIO]"); | |
668761ac | 62 | |
a39be27b | 63 | static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id) |
ba89bf19 | 64 | { |
5b3c1832 HM |
65 | struct brcmf_bus *bus_if = dev_get_drvdata(dev_id); |
66 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
ba89bf19 | 67 | |
668761ac | 68 | brcmf_dbg(INTR, "OOB intr triggered\n"); |
ba89bf19 | 69 | |
668761ac | 70 | /* out-of-band interrupt is level-triggered which won't |
ba89bf19 FL |
71 | * be cleared until dpc |
72 | */ | |
73 | if (sdiodev->irq_en) { | |
74 | disable_irq_nosync(irq); | |
75 | sdiodev->irq_en = false; | |
76 | } | |
77 | ||
82d7f3c1 | 78 | brcmf_sdio_isr(sdiodev->bus); |
ba89bf19 FL |
79 | |
80 | return IRQ_HANDLED; | |
81 | } | |
82 | ||
a39be27b | 83 | static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func) |
5b435de0 | 84 | { |
5b3c1832 HM |
85 | struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev); |
86 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
5b435de0 | 87 | |
668761ac | 88 | brcmf_dbg(INTR, "IB intr triggered\n"); |
5b435de0 | 89 | |
82d7f3c1 | 90 | brcmf_sdio_isr(sdiodev->bus); |
5b435de0 AS |
91 | } |
92 | ||
fbf59108 | 93 | /* dummy handler for SDIO function 2 interrupt */ |
a39be27b | 94 | static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func) |
fbf59108 FL |
95 | { |
96 | } | |
97 | ||
a39be27b | 98 | static bool brcmf_sdiod_pm_resume_error(struct brcmf_sdio_dev *sdiodev) |
e49b06ba AS |
99 | { |
100 | bool is_err = false; | |
101 | #ifdef CONFIG_PM_SLEEP | |
102 | is_err = atomic_read(&sdiodev->suspend); | |
103 | #endif | |
104 | return is_err; | |
105 | } | |
106 | ||
a39be27b AS |
107 | static void brcmf_sdiod_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, |
108 | wait_queue_head_t *wq) | |
e49b06ba AS |
109 | { |
110 | #ifdef CONFIG_PM_SLEEP | |
111 | int retry = 0; | |
112 | while (atomic_read(&sdiodev->suspend) && retry++ != 30) | |
113 | wait_event_timeout(*wq, false, HZ/100); | |
114 | #endif | |
115 | } | |
116 | ||
a39be27b | 117 | int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev) |
5b435de0 | 118 | { |
668761ac HM |
119 | int ret = 0; |
120 | u8 data; | |
121 | unsigned long flags; | |
5b435de0 | 122 | |
668761ac HM |
123 | if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) { |
124 | brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n", | |
125 | sdiodev->pdata->oob_irq_nr); | |
126 | ret = request_irq(sdiodev->pdata->oob_irq_nr, | |
a39be27b | 127 | brcmf_sdiod_oob_irqhandler, |
668761ac HM |
128 | sdiodev->pdata->oob_irq_flags, |
129 | "brcmf_oob_intr", | |
130 | &sdiodev->func[1]->dev); | |
131 | if (ret != 0) { | |
132 | brcmf_err("request_irq failed %d\n", ret); | |
133 | return ret; | |
134 | } | |
135 | sdiodev->oob_irq_requested = true; | |
136 | spin_lock_init(&sdiodev->irq_en_lock); | |
137 | spin_lock_irqsave(&sdiodev->irq_en_lock, flags); | |
138 | sdiodev->irq_en = true; | |
139 | spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags); | |
140 | ||
141 | ret = enable_irq_wake(sdiodev->pdata->oob_irq_nr); | |
142 | if (ret != 0) { | |
143 | brcmf_err("enable_irq_wake failed %d\n", ret); | |
144 | return ret; | |
145 | } | |
146 | sdiodev->irq_wake = true; | |
147 | ||
148 | sdio_claim_host(sdiodev->func[1]); | |
149 | ||
150 | /* must configure SDIO_CCCR_IENx to enable irq */ | |
a39be27b | 151 | data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret); |
668761ac | 152 | data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1; |
a39be27b | 153 | brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret); |
668761ac HM |
154 | |
155 | /* redirect, configure and enable io for interrupt signal */ | |
156 | data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE; | |
157 | if (sdiodev->pdata->oob_irq_flags & IRQF_TRIGGER_HIGH) | |
158 | data |= SDIO_SEPINT_ACT_HI; | |
a39be27b | 159 | brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret); |
668761ac HM |
160 | |
161 | sdio_release_host(sdiodev->func[1]); | |
162 | } else { | |
163 | brcmf_dbg(SDIO, "Entering\n"); | |
164 | sdio_claim_host(sdiodev->func[1]); | |
a39be27b AS |
165 | sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler); |
166 | sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler); | |
668761ac HM |
167 | sdio_release_host(sdiodev->func[1]); |
168 | } | |
5b435de0 AS |
169 | |
170 | return 0; | |
171 | } | |
172 | ||
a39be27b | 173 | int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev) |
5b435de0 | 174 | { |
c3203374 | 175 | brcmf_dbg(SDIO, "Entering\n"); |
5b435de0 | 176 | |
668761ac HM |
177 | if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) { |
178 | sdio_claim_host(sdiodev->func[1]); | |
a39be27b AS |
179 | brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL); |
180 | brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL); | |
668761ac HM |
181 | sdio_release_host(sdiodev->func[1]); |
182 | ||
183 | if (sdiodev->oob_irq_requested) { | |
184 | sdiodev->oob_irq_requested = false; | |
185 | if (sdiodev->irq_wake) { | |
186 | disable_irq_wake(sdiodev->pdata->oob_irq_nr); | |
187 | sdiodev->irq_wake = false; | |
188 | } | |
189 | free_irq(sdiodev->pdata->oob_irq_nr, | |
190 | &sdiodev->func[1]->dev); | |
191 | sdiodev->irq_en = false; | |
192 | } | |
193 | } else { | |
194 | sdio_claim_host(sdiodev->func[1]); | |
195 | sdio_release_irq(sdiodev->func[2]); | |
196 | sdio_release_irq(sdiodev->func[1]); | |
197 | sdio_release_host(sdiodev->func[1]); | |
198 | } | |
5b435de0 AS |
199 | |
200 | return 0; | |
201 | } | |
202 | ||
36c4e7e4 AS |
203 | static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func, |
204 | uint regaddr, u8 byte) | |
e49b06ba | 205 | { |
e49b06ba AS |
206 | int err_ret; |
207 | ||
208 | /* | |
209 | * Can only directly write to some F0 registers. | |
36c4e7e4 | 210 | * Handle CCCR_IENx and CCCR_ABORT command |
e49b06ba AS |
211 | * as a special case. |
212 | */ | |
71370eb8 | 213 | if ((regaddr == SDIO_CCCR_ABORT) || |
36c4e7e4 AS |
214 | (regaddr == SDIO_CCCR_IENx)) |
215 | sdio_writeb(func, byte, regaddr, &err_ret); | |
216 | else | |
217 | sdio_f0_writeb(func, byte, regaddr, &err_ret); | |
e49b06ba AS |
218 | |
219 | return err_ret; | |
220 | } | |
221 | ||
71c60cf2 AS |
222 | static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn, |
223 | u32 addr, u8 regsz, void *data, bool write) | |
e49b06ba | 224 | { |
71c60cf2 AS |
225 | struct sdio_func *func; |
226 | int ret; | |
e49b06ba | 227 | |
71c60cf2 AS |
228 | brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n", |
229 | write, fn, addr, regsz); | |
e49b06ba | 230 | |
71c60cf2 | 231 | brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_word_wait); |
a39be27b | 232 | if (brcmf_sdiod_pm_resume_error(sdiodev)) |
e49b06ba AS |
233 | return -EIO; |
234 | ||
71c60cf2 AS |
235 | /* only allow byte access on F0 */ |
236 | if (WARN_ON(regsz > 1 && !fn)) | |
237 | return -EINVAL; | |
238 | func = sdiodev->func[fn]; | |
239 | ||
240 | switch (regsz) { | |
241 | case sizeof(u8): | |
242 | if (write) { | |
243 | if (fn) | |
244 | sdio_writeb(func, *(u8 *)data, addr, &ret); | |
245 | else | |
246 | ret = brcmf_sdiod_f0_writeb(func, addr, | |
247 | *(u8 *)data); | |
e49b06ba | 248 | } else { |
71c60cf2 AS |
249 | if (fn) |
250 | *(u8 *)data = sdio_readb(func, addr, &ret); | |
251 | else | |
252 | *(u8 *)data = sdio_f0_readb(func, addr, &ret); | |
e49b06ba | 253 | } |
71c60cf2 AS |
254 | break; |
255 | case sizeof(u16): | |
256 | if (write) | |
257 | sdio_writew(func, *(u16 *)data, addr, &ret); | |
258 | else | |
259 | *(u16 *)data = sdio_readw(func, addr, &ret); | |
260 | break; | |
261 | case sizeof(u32): | |
262 | if (write) | |
263 | sdio_writel(func, *(u32 *)data, addr, &ret); | |
264 | else | |
265 | *(u32 *)data = sdio_readl(func, addr, &ret); | |
266 | break; | |
267 | default: | |
268 | brcmf_err("invalid size: %d\n", regsz); | |
269 | break; | |
e49b06ba AS |
270 | } |
271 | ||
4d1a4f16 AS |
272 | if (ret) |
273 | brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n", | |
274 | write ? "write" : "read", fn, addr, ret); | |
275 | ||
71c60cf2 | 276 | return ret; |
e49b06ba AS |
277 | } |
278 | ||
71c60cf2 AS |
279 | static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr, |
280 | u8 regsz, void *data, bool write) | |
e49b06ba | 281 | { |
4d1a4f16 | 282 | u8 func; |
71c60cf2 AS |
283 | s32 retry = 0; |
284 | int ret; | |
e49b06ba | 285 | |
bb350711 AS |
286 | if (sdiodev->bus_if->state == BRCMF_BUS_NOMEDIUM) |
287 | return -ENOMEDIUM; | |
288 | ||
71c60cf2 AS |
289 | /* |
290 | * figure out how to read the register based on address range | |
291 | * 0x00 ~ 0x7FF: function 0 CCCR and FBR | |
292 | * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers | |
293 | * The rest: function 1 silicon backplane core registers | |
294 | */ | |
295 | if ((addr & ~REG_F0_REG_MASK) == 0) | |
4d1a4f16 | 296 | func = SDIO_FUNC_0; |
71c60cf2 | 297 | else |
4d1a4f16 | 298 | func = SDIO_FUNC_1; |
e49b06ba | 299 | |
71c60cf2 AS |
300 | do { |
301 | if (!write) | |
302 | memset(data, 0, regsz); | |
303 | /* for retry wait for 1 ms till bus get settled down */ | |
304 | if (retry) | |
305 | usleep_range(1000, 2000); | |
4d1a4f16 | 306 | ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz, |
71c60cf2 | 307 | data, write); |
bb350711 AS |
308 | } while (ret != 0 && ret != -ENOMEDIUM && |
309 | retry++ < SDIOH_API_ACCESS_RETRY_LIMIT); | |
e49b06ba | 310 | |
bb350711 AS |
311 | if (ret == -ENOMEDIUM) |
312 | brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_NOMEDIUM); | |
4d1a4f16 AS |
313 | else if (ret != 0) { |
314 | /* | |
315 | * SleepCSR register access can fail when | |
316 | * waking up the device so reduce this noise | |
317 | * in the logs. | |
318 | */ | |
319 | if (addr != SBSDIO_FUNC1_SLEEPCSR) | |
320 | brcmf_err("failed to %s data F%d@0x%05x, err: %d\n", | |
321 | write ? "write" : "read", func, addr, ret); | |
322 | else | |
323 | brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n", | |
324 | write ? "write" : "read", func, addr, ret); | |
325 | } | |
71c60cf2 | 326 | return ret; |
e49b06ba AS |
327 | } |
328 | ||
356bae6f | 329 | static int |
a39be27b | 330 | brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address) |
5b435de0 | 331 | { |
7d9cfc28 FL |
332 | int err = 0, i; |
333 | u8 addr[3]; | |
7d9cfc28 | 334 | |
bb350711 AS |
335 | if (sdiodev->bus_if->state == BRCMF_BUS_NOMEDIUM) |
336 | return -ENOMEDIUM; | |
337 | ||
7d9cfc28 FL |
338 | addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK; |
339 | addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK; | |
340 | addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK; | |
341 | ||
342 | for (i = 0; i < 3; i++) { | |
71c60cf2 AS |
343 | err = brcmf_sdiod_regrw_helper(sdiodev, |
344 | SBSDIO_FUNC1_SBADDRLOW + i, | |
345 | sizeof(u8), &addr[i], true); | |
7d9cfc28 | 346 | if (err) { |
71c60cf2 | 347 | brcmf_err("failed at addr: 0x%0x\n", |
7d9cfc28 FL |
348 | SBSDIO_FUNC1_SBADDRLOW + i); |
349 | break; | |
350 | } | |
351 | } | |
5b435de0 AS |
352 | |
353 | return err; | |
354 | } | |
355 | ||
356bae6f | 356 | static int |
a39be27b | 357 | brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr) |
356bae6f FL |
358 | { |
359 | uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK; | |
360 | int err = 0; | |
361 | ||
362 | if (bar0 != sdiodev->sbwad) { | |
a39be27b | 363 | err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0); |
356bae6f FL |
364 | if (err) |
365 | return err; | |
366 | ||
367 | sdiodev->sbwad = bar0; | |
368 | } | |
369 | ||
370 | *addr &= SBSDIO_SB_OFT_ADDR_MASK; | |
371 | ||
372 | if (width == 4) | |
373 | *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
374 | ||
375 | return 0; | |
376 | } | |
377 | ||
a39be27b | 378 | u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) |
e9b8d91d FL |
379 | { |
380 | u8 data; | |
381 | int retval; | |
382 | ||
c3203374 | 383 | brcmf_dbg(SDIO, "addr:0x%08x\n", addr); |
71c60cf2 AS |
384 | retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, |
385 | false); | |
c3203374 | 386 | brcmf_dbg(SDIO, "data:0x%02x\n", data); |
e9b8d91d FL |
387 | |
388 | if (ret) | |
389 | *ret = retval; | |
390 | ||
391 | return data; | |
392 | } | |
393 | ||
a39be27b | 394 | u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) |
e9b8d91d FL |
395 | { |
396 | u32 data; | |
397 | int retval; | |
398 | ||
c3203374 | 399 | brcmf_dbg(SDIO, "addr:0x%08x\n", addr); |
71c60cf2 AS |
400 | retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr); |
401 | if (retval) | |
402 | goto done; | |
403 | retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, | |
404 | false); | |
c3203374 | 405 | brcmf_dbg(SDIO, "data:0x%08x\n", data); |
e9b8d91d | 406 | |
71c60cf2 | 407 | done: |
e9b8d91d FL |
408 | if (ret) |
409 | *ret = retval; | |
410 | ||
411 | return data; | |
412 | } | |
413 | ||
a39be27b | 414 | void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, |
e9b8d91d FL |
415 | u8 data, int *ret) |
416 | { | |
417 | int retval; | |
418 | ||
c3203374 | 419 | brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data); |
71c60cf2 AS |
420 | retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, |
421 | true); | |
e9b8d91d FL |
422 | if (ret) |
423 | *ret = retval; | |
424 | } | |
425 | ||
a39be27b | 426 | void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, |
e9b8d91d FL |
427 | u32 data, int *ret) |
428 | { | |
429 | int retval; | |
430 | ||
c3203374 | 431 | brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data); |
71c60cf2 AS |
432 | retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr); |
433 | if (retval) | |
434 | goto done; | |
435 | retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, | |
436 | true); | |
e9b8d91d | 437 | |
71c60cf2 | 438 | done: |
e9b8d91d FL |
439 | if (ret) |
440 | *ret = retval; | |
441 | } | |
442 | ||
a39be27b | 443 | static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn, |
4aef267e AS |
444 | bool write, u32 addr, struct sk_buff *pkt) |
445 | { | |
446 | unsigned int req_sz; | |
bb350711 | 447 | int err; |
4aef267e | 448 | |
a39be27b AS |
449 | brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait); |
450 | if (brcmf_sdiod_pm_resume_error(sdiodev)) | |
4aef267e AS |
451 | return -EIO; |
452 | ||
453 | /* Single skb use the standard mmc interface */ | |
454 | req_sz = pkt->len + 3; | |
455 | req_sz &= (uint)~3; | |
456 | ||
457 | if (write) | |
bb350711 AS |
458 | err = sdio_memcpy_toio(sdiodev->func[fn], addr, |
459 | ((u8 *)(pkt->data)), req_sz); | |
4aef267e | 460 | else if (fn == 1) |
bb350711 AS |
461 | err = sdio_memcpy_fromio(sdiodev->func[fn], ((u8 *)(pkt->data)), |
462 | addr, req_sz); | |
4aef267e AS |
463 | else |
464 | /* function 2 read is FIFO operation */ | |
bb350711 AS |
465 | err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr, |
466 | req_sz); | |
467 | if (err == -ENOMEDIUM) | |
468 | brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_NOMEDIUM); | |
469 | return err; | |
4aef267e AS |
470 | } |
471 | ||
78b3f1c5 | 472 | /** |
a39be27b | 473 | * brcmf_sdiod_sglist_rw - SDIO interface function for block data access |
78b3f1c5 FL |
474 | * @sdiodev: brcmfmac sdio device |
475 | * @fn: SDIO function number | |
476 | * @write: direction flag | |
477 | * @addr: dongle memory address as source/destination | |
478 | * @pkt: skb pointer | |
479 | * | |
480 | * This function takes the respbonsibility as the interface function to MMC | |
481 | * stack for block data access. It assumes that the skb passed down by the | |
482 | * caller has already been padded and aligned. | |
483 | */ | |
a39be27b AS |
484 | static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn, |
485 | bool write, u32 addr, | |
486 | struct sk_buff_head *pktlist) | |
78b3f1c5 | 487 | { |
354b75bf | 488 | unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset; |
71201496 | 489 | unsigned int max_req_sz, orig_offset, dst_offset; |
3f782744 | 490 | unsigned short max_seg_cnt, seg_sz; |
3b81a680 FL |
491 | unsigned char *pkt_data, *orig_data, *dst_data; |
492 | struct sk_buff *pkt_next = NULL, *local_pkt_next; | |
493 | struct sk_buff_head local_list, *target_list; | |
354b75bf FL |
494 | struct mmc_request mmc_req; |
495 | struct mmc_command mmc_cmd; | |
496 | struct mmc_data mmc_dat; | |
354b75bf | 497 | struct scatterlist *sgl; |
354b75bf FL |
498 | int ret = 0; |
499 | ||
500 | if (!pktlist->qlen) | |
501 | return -EINVAL; | |
78b3f1c5 | 502 | |
a39be27b AS |
503 | brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait); |
504 | if (brcmf_sdiod_pm_resume_error(sdiodev)) | |
78b3f1c5 FL |
505 | return -EIO; |
506 | ||
3b81a680 FL |
507 | target_list = pktlist; |
508 | /* for host with broken sg support, prepare a page aligned list */ | |
509 | __skb_queue_head_init(&local_list); | |
510 | if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) { | |
511 | req_sz = 0; | |
512 | skb_queue_walk(pktlist, pkt_next) | |
513 | req_sz += pkt_next->len; | |
514 | req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize); | |
515 | while (req_sz > PAGE_SIZE) { | |
516 | pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE); | |
517 | if (pkt_next == NULL) { | |
518 | ret = -ENOMEM; | |
519 | goto exit; | |
520 | } | |
521 | __skb_queue_tail(&local_list, pkt_next); | |
522 | req_sz -= PAGE_SIZE; | |
523 | } | |
524 | pkt_next = brcmu_pkt_buf_get_skb(req_sz); | |
525 | if (pkt_next == NULL) { | |
526 | ret = -ENOMEM; | |
527 | goto exit; | |
528 | } | |
529 | __skb_queue_tail(&local_list, pkt_next); | |
530 | target_list = &local_list; | |
531 | } | |
532 | ||
354b75bf | 533 | func_blk_sz = sdiodev->func[fn]->cur_blksize; |
71201496 AS |
534 | max_req_sz = sdiodev->max_request_size; |
535 | max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count, | |
536 | target_list->qlen); | |
3b81a680 | 537 | seg_sz = target_list->qlen; |
354b75bf | 538 | pkt_offset = 0; |
3b81a680 | 539 | pkt_next = target_list->next; |
354b75bf | 540 | |
7f9a8dc8 AS |
541 | memset(&mmc_req, 0, sizeof(struct mmc_request)); |
542 | memset(&mmc_cmd, 0, sizeof(struct mmc_command)); | |
543 | memset(&mmc_dat, 0, sizeof(struct mmc_data)); | |
544 | ||
af1fa210 | 545 | mmc_dat.sg = sdiodev->sgtable.sgl; |
7f9a8dc8 AS |
546 | mmc_dat.blksz = func_blk_sz; |
547 | mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; | |
548 | mmc_cmd.opcode = SD_IO_RW_EXTENDED; | |
549 | mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */ | |
550 | mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */ | |
551 | mmc_cmd.arg |= 1<<27; /* block mode */ | |
552 | /* for function 1 the addr will be incremented */ | |
553 | mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0; | |
554 | mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC; | |
555 | mmc_req.cmd = &mmc_cmd; | |
556 | mmc_req.data = &mmc_dat; | |
557 | ||
354b75bf FL |
558 | while (seg_sz) { |
559 | req_sz = 0; | |
560 | sg_cnt = 0; | |
af1fa210 | 561 | sgl = sdiodev->sgtable.sgl; |
354b75bf | 562 | /* prep sg table */ |
3b81a680 | 563 | while (pkt_next != (struct sk_buff *)target_list) { |
354b75bf FL |
564 | pkt_data = pkt_next->data + pkt_offset; |
565 | sg_data_sz = pkt_next->len - pkt_offset; | |
71201496 AS |
566 | if (sg_data_sz > sdiodev->max_segment_size) |
567 | sg_data_sz = sdiodev->max_segment_size; | |
354b75bf FL |
568 | if (sg_data_sz > max_req_sz - req_sz) |
569 | sg_data_sz = max_req_sz - req_sz; | |
570 | ||
571 | sg_set_buf(sgl, pkt_data, sg_data_sz); | |
572 | ||
573 | sg_cnt++; | |
574 | sgl = sg_next(sgl); | |
575 | req_sz += sg_data_sz; | |
576 | pkt_offset += sg_data_sz; | |
577 | if (pkt_offset == pkt_next->len) { | |
578 | pkt_offset = 0; | |
579 | pkt_next = pkt_next->next; | |
580 | } | |
581 | ||
3f782744 | 582 | if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt) |
354b75bf FL |
583 | break; |
584 | } | |
585 | seg_sz -= sg_cnt; | |
586 | ||
587 | if (req_sz % func_blk_sz != 0) { | |
588 | brcmf_err("sg request length %u is not %u aligned\n", | |
589 | req_sz, func_blk_sz); | |
3b81a680 FL |
590 | ret = -ENOTBLK; |
591 | goto exit; | |
354b75bf | 592 | } |
7f9a8dc8 | 593 | |
354b75bf | 594 | mmc_dat.sg_len = sg_cnt; |
354b75bf | 595 | mmc_dat.blocks = req_sz / func_blk_sz; |
354b75bf FL |
596 | mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */ |
597 | mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */ | |
7f9a8dc8 | 598 | /* incrementing addr for function 1 */ |
354b75bf FL |
599 | if (fn == 1) |
600 | addr += req_sz; | |
601 | ||
602 | mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card); | |
71201496 | 603 | mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req); |
354b75bf FL |
604 | |
605 | ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error; | |
bb350711 AS |
606 | if (ret == -ENOMEDIUM) { |
607 | brcmf_bus_change_state(sdiodev->bus_if, | |
608 | BRCMF_BUS_NOMEDIUM); | |
609 | break; | |
610 | } else if (ret != 0) { | |
354b75bf FL |
611 | brcmf_err("CMD53 sg block %s failed %d\n", |
612 | write ? "write" : "read", ret); | |
613 | ret = -EIO; | |
614 | break; | |
615 | } | |
616 | } | |
617 | ||
3b81a680 FL |
618 | if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) { |
619 | local_pkt_next = local_list.next; | |
620 | orig_offset = 0; | |
621 | skb_queue_walk(pktlist, pkt_next) { | |
622 | dst_offset = 0; | |
623 | do { | |
624 | req_sz = local_pkt_next->len - orig_offset; | |
625 | req_sz = min_t(uint, pkt_next->len - dst_offset, | |
626 | req_sz); | |
627 | orig_data = local_pkt_next->data + orig_offset; | |
628 | dst_data = pkt_next->data + dst_offset; | |
629 | memcpy(dst_data, orig_data, req_sz); | |
630 | orig_offset += req_sz; | |
631 | dst_offset += req_sz; | |
632 | if (orig_offset == local_pkt_next->len) { | |
633 | orig_offset = 0; | |
634 | local_pkt_next = local_pkt_next->next; | |
635 | } | |
636 | if (dst_offset == pkt_next->len) | |
637 | break; | |
638 | } while (!skb_queue_empty(&local_list)); | |
639 | } | |
640 | } | |
641 | ||
642 | exit: | |
af1fa210 | 643 | sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents); |
3b81a680 FL |
644 | while ((pkt_next = __skb_dequeue(&local_list)) != NULL) |
645 | brcmu_pkt_buf_free_skb(pkt_next); | |
354b75bf FL |
646 | |
647 | return ret; | |
78b3f1c5 FL |
648 | } |
649 | ||
a7cdd821 | 650 | int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) |
5adfeb63 AS |
651 | { |
652 | struct sk_buff *mypkt; | |
653 | int err; | |
654 | ||
655 | mypkt = brcmu_pkt_buf_get_skb(nbytes); | |
656 | if (!mypkt) { | |
5e8149f5 | 657 | brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", |
5adfeb63 AS |
658 | nbytes); |
659 | return -EIO; | |
660 | } | |
661 | ||
a7cdd821 | 662 | err = brcmf_sdiod_recv_pkt(sdiodev, mypkt); |
5adfeb63 AS |
663 | if (!err) |
664 | memcpy(buf, mypkt->data, nbytes); | |
665 | ||
666 | brcmu_pkt_buf_free_skb(mypkt); | |
667 | return err; | |
668 | } | |
669 | ||
a7cdd821 | 670 | int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt) |
5adfeb63 | 671 | { |
a7cdd821 | 672 | u32 addr = sdiodev->sbwad; |
5adfeb63 AS |
673 | int err = 0; |
674 | ||
a7cdd821 | 675 | brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len); |
5adfeb63 | 676 | |
a7cdd821 | 677 | err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); |
5adfeb63 | 678 | if (err) |
7057fd00 | 679 | goto done; |
5b435de0 | 680 | |
a7cdd821 | 681 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt); |
5adfeb63 | 682 | |
7057fd00 | 683 | done: |
5adfeb63 AS |
684 | return err; |
685 | } | |
686 | ||
a7cdd821 AS |
687 | int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev, |
688 | struct sk_buff_head *pktq, uint totlen) | |
5adfeb63 | 689 | { |
a413e39a AS |
690 | struct sk_buff *glom_skb; |
691 | struct sk_buff *skb; | |
a7cdd821 | 692 | u32 addr = sdiodev->sbwad; |
5adfeb63 AS |
693 | int err = 0; |
694 | ||
a7cdd821 AS |
695 | brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", |
696 | addr, pktq->qlen); | |
5adfeb63 | 697 | |
a7cdd821 | 698 | err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); |
5adfeb63 | 699 | if (err) |
7057fd00 | 700 | goto done; |
5b435de0 | 701 | |
a413e39a | 702 | if (pktq->qlen == 1) |
a7cdd821 AS |
703 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, |
704 | pktq->next); | |
a413e39a AS |
705 | else if (!sdiodev->sg_support) { |
706 | glom_skb = brcmu_pkt_buf_get_skb(totlen); | |
707 | if (!glom_skb) | |
708 | return -ENOMEM; | |
a7cdd821 AS |
709 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, |
710 | glom_skb); | |
a413e39a AS |
711 | if (err) |
712 | goto done; | |
713 | ||
714 | skb_queue_walk(pktq, skb) { | |
715 | memcpy(skb->data, glom_skb->data, skb->len); | |
716 | skb_pull(glom_skb, skb->len); | |
717 | } | |
718 | } else | |
a7cdd821 AS |
719 | err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr, |
720 | pktq); | |
5b435de0 | 721 | |
7057fd00 | 722 | done: |
5adfeb63 | 723 | return err; |
5b435de0 AS |
724 | } |
725 | ||
a7cdd821 | 726 | int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) |
5adfeb63 AS |
727 | { |
728 | struct sk_buff *mypkt; | |
a7cdd821 | 729 | u32 addr = sdiodev->sbwad; |
5adfeb63 AS |
730 | int err; |
731 | ||
732 | mypkt = brcmu_pkt_buf_get_skb(nbytes); | |
733 | if (!mypkt) { | |
5e8149f5 | 734 | brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", |
5adfeb63 AS |
735 | nbytes); |
736 | return -EIO; | |
737 | } | |
738 | ||
739 | memcpy(mypkt->data, buf, nbytes); | |
4aef267e | 740 | |
a7cdd821 | 741 | err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); |
4aef267e | 742 | |
fcaac2b1 | 743 | if (!err) |
a7cdd821 AS |
744 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr, |
745 | mypkt); | |
5adfeb63 AS |
746 | |
747 | brcmu_pkt_buf_free_skb(mypkt); | |
748 | return err; | |
749 | ||
750 | } | |
751 | ||
a7cdd821 AS |
752 | int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev, |
753 | struct sk_buff_head *pktq) | |
5b435de0 | 754 | { |
c8cce1f9 | 755 | struct sk_buff *skb; |
a7cdd821 | 756 | u32 addr = sdiodev->sbwad; |
fcaac2b1 | 757 | int err; |
5b435de0 | 758 | |
a7cdd821 | 759 | brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen); |
5b435de0 | 760 | |
a7cdd821 | 761 | err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); |
fcaac2b1 AS |
762 | if (err) |
763 | return err; | |
5b435de0 | 764 | |
c8cce1f9 AS |
765 | if (pktq->qlen == 1 || !sdiodev->sg_support) |
766 | skb_queue_walk(pktq, skb) { | |
a7cdd821 AS |
767 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, |
768 | addr, skb); | |
c8cce1f9 AS |
769 | if (err) |
770 | break; | |
771 | } | |
772 | else | |
a7cdd821 AS |
773 | err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr, |
774 | pktq); | |
c8cce1f9 AS |
775 | |
776 | return err; | |
5b435de0 AS |
777 | } |
778 | ||
ba540b01 | 779 | int |
a39be27b AS |
780 | brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address, |
781 | u8 *data, uint size) | |
5b435de0 | 782 | { |
ba540b01 FL |
783 | int bcmerror = 0; |
784 | struct sk_buff *pkt; | |
785 | u32 sdaddr; | |
786 | uint dsize; | |
787 | ||
788 | dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); | |
789 | pkt = dev_alloc_skb(dsize); | |
790 | if (!pkt) { | |
791 | brcmf_err("dev_alloc_skb failed: len %d\n", dsize); | |
792 | return -EIO; | |
793 | } | |
794 | pkt->priority = 0; | |
4c6e869d | 795 | |
ba540b01 FL |
796 | /* Determine initial transfer parameters */ |
797 | sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK; | |
798 | if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK) | |
799 | dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr); | |
800 | else | |
801 | dsize = size; | |
5b435de0 | 802 | |
ba540b01 FL |
803 | sdio_claim_host(sdiodev->func[1]); |
804 | ||
805 | /* Do the transfer(s) */ | |
806 | while (size) { | |
807 | /* Set the backplane window to include the start address */ | |
a39be27b | 808 | bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address); |
ba540b01 FL |
809 | if (bcmerror) |
810 | break; | |
811 | ||
812 | brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n", | |
813 | write ? "write" : "read", dsize, | |
814 | sdaddr, address & SBSDIO_SBWINDOW_MASK); | |
815 | ||
816 | sdaddr &= SBSDIO_SB_OFT_ADDR_MASK; | |
817 | sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
818 | ||
819 | skb_put(pkt, dsize); | |
820 | if (write) | |
821 | memcpy(pkt->data, data, dsize); | |
a39be27b AS |
822 | bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write, |
823 | sdaddr, pkt); | |
ba540b01 FL |
824 | if (bcmerror) { |
825 | brcmf_err("membytes transfer failed\n"); | |
826 | break; | |
827 | } | |
828 | if (!write) | |
829 | memcpy(data, pkt->data, dsize); | |
79c868e5 | 830 | skb_trim(pkt, 0); |
ba540b01 FL |
831 | |
832 | /* Adjust for next transfer (if any) */ | |
833 | size -= dsize; | |
834 | if (size) { | |
835 | data += dsize; | |
836 | address += dsize; | |
837 | sdaddr = 0; | |
838 | dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); | |
839 | } | |
4c6e869d AS |
840 | } |
841 | ||
ba540b01 | 842 | dev_kfree_skb(pkt); |
4c6e869d | 843 | |
ba540b01 | 844 | /* Return the window to backplane enumeration space for core access */ |
a39be27b | 845 | if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad)) |
ba540b01 FL |
846 | brcmf_err("FAILED to set window back to 0x%x\n", |
847 | sdiodev->sbwad); | |
4c6e869d | 848 | |
ba540b01 | 849 | sdio_release_host(sdiodev->func[1]); |
4c6e869d | 850 | |
ba540b01 | 851 | return bcmerror; |
5b435de0 AS |
852 | } |
853 | ||
a39be27b | 854 | int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn) |
5b435de0 AS |
855 | { |
856 | char t_func = (char)fn; | |
c3203374 | 857 | brcmf_dbg(SDIO, "Enter\n"); |
5b435de0 AS |
858 | |
859 | /* issue abort cmd52 command through F0 */ | |
71c60cf2 AS |
860 | brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT, |
861 | sizeof(t_func), &t_func, true); | |
5b435de0 | 862 | |
c3203374 | 863 | brcmf_dbg(SDIO, "Exit\n"); |
5b435de0 AS |
864 | return 0; |
865 | } | |
866 | ||
af1fa210 AS |
867 | static void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev) |
868 | { | |
869 | uint nents; | |
870 | int err; | |
871 | ||
872 | if (!sdiodev->sg_support) | |
873 | return; | |
874 | ||
875 | nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE, brcmf_sdiod_txglomsz); | |
876 | nents += (nents >> 4) + 1; | |
877 | ||
878 | WARN_ON(nents > sdiodev->max_segment_count); | |
879 | ||
880 | brcmf_dbg(TRACE, "nents=%d\n", nents); | |
881 | err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL); | |
882 | if (err < 0) { | |
883 | brcmf_err("allocation failed: disable scatter-gather"); | |
884 | sdiodev->sg_support = false; | |
885 | } | |
886 | ||
887 | sdiodev->txglomsz = brcmf_sdiod_txglomsz; | |
888 | } | |
889 | ||
a39be27b AS |
890 | static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev) |
891 | { | |
a39be27b | 892 | if (sdiodev->bus) { |
9fbe2a6d | 893 | brcmf_sdio_remove(sdiodev->bus); |
a39be27b AS |
894 | sdiodev->bus = NULL; |
895 | } | |
896 | ||
897 | /* Disable Function 2 */ | |
898 | sdio_claim_host(sdiodev->func[2]); | |
899 | sdio_disable_func(sdiodev->func[2]); | |
900 | sdio_release_host(sdiodev->func[2]); | |
901 | ||
902 | /* Disable Function 1 */ | |
903 | sdio_claim_host(sdiodev->func[1]); | |
904 | sdio_disable_func(sdiodev->func[1]); | |
905 | sdio_release_host(sdiodev->func[1]); | |
906 | ||
af1fa210 | 907 | sg_free_table(&sdiodev->sgtable); |
a39be27b AS |
908 | sdiodev->sbwad = 0; |
909 | ||
910 | return 0; | |
911 | } | |
912 | ||
913 | static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev) | |
e2dc9eea | 914 | { |
e2dc9eea | 915 | struct sdio_func *func; |
a39be27b | 916 | struct mmc_host *host; |
e2dc9eea | 917 | uint max_blocks; |
a39be27b | 918 | int ret = 0; |
e2dc9eea AS |
919 | |
920 | sdiodev->num_funcs = 2; | |
921 | ||
922 | sdio_claim_host(sdiodev->func[1]); | |
923 | ||
a39be27b AS |
924 | ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE); |
925 | if (ret) { | |
e2dc9eea | 926 | brcmf_err("Failed to set F1 blocksize\n"); |
a39be27b | 927 | sdio_release_host(sdiodev->func[1]); |
e2dc9eea AS |
928 | goto out; |
929 | } | |
a39be27b AS |
930 | ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE); |
931 | if (ret) { | |
e2dc9eea | 932 | brcmf_err("Failed to set F2 blocksize\n"); |
a39be27b | 933 | sdio_release_host(sdiodev->func[1]); |
e2dc9eea AS |
934 | goto out; |
935 | } | |
936 | ||
71370eb8 AS |
937 | /* increase F2 timeout */ |
938 | sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY; | |
939 | ||
463c30b3 | 940 | /* Enable Function 1 */ |
a39be27b AS |
941 | ret = sdio_enable_func(sdiodev->func[1]); |
942 | sdio_release_host(sdiodev->func[1]); | |
943 | if (ret) { | |
944 | brcmf_err("Failed to enable F1: err=%d\n", ret); | |
463c30b3 AS |
945 | goto out; |
946 | } | |
e2dc9eea AS |
947 | |
948 | /* | |
a39be27b | 949 | * determine host related variables after brcmf_sdiod_probe() |
e2dc9eea AS |
950 | * as func->cur_blksize is properly set and F2 init has been |
951 | * completed successfully. | |
952 | */ | |
953 | func = sdiodev->func[2]; | |
954 | host = func->card->host; | |
955 | sdiodev->sg_support = host->max_segs > 1; | |
956 | max_blocks = min_t(uint, host->max_blk_count, 511u); | |
957 | sdiodev->max_request_size = min_t(uint, host->max_req_size, | |
958 | max_blocks * func->cur_blksize); | |
959 | sdiodev->max_segment_count = min_t(uint, host->max_segs, | |
960 | SG_MAX_SINGLE_ALLOC); | |
961 | sdiodev->max_segment_size = host->max_seg_size; | |
e49b06ba | 962 | |
af1fa210 AS |
963 | /* allocate scatter-gather table. sg support |
964 | * will be disabled upon allocation failure. | |
965 | */ | |
966 | brcmf_sdiod_sgtable_alloc(sdiodev); | |
967 | ||
e49b06ba | 968 | /* try to attach to the target device */ |
82d7f3c1 | 969 | sdiodev->bus = brcmf_sdio_probe(sdiodev); |
e49b06ba | 970 | if (!sdiodev->bus) { |
e49b06ba AS |
971 | ret = -ENODEV; |
972 | goto out; | |
973 | } | |
974 | ||
975 | out: | |
976 | if (ret) | |
a39be27b | 977 | brcmf_sdiod_remove(sdiodev); |
e49b06ba AS |
978 | |
979 | return ret; | |
980 | } | |
981 | ||
5779ae6a HM |
982 | #define BRCMF_SDIO_DEVICE(dev_id) \ |
983 | {SDIO_DEVICE(BRCM_SDIO_VENDOR_ID_BROADCOM, dev_id)} | |
984 | ||
e49b06ba AS |
985 | /* devices we support, null terminated */ |
986 | static const struct sdio_device_id brcmf_sdmmc_ids[] = { | |
5779ae6a HM |
987 | BRCMF_SDIO_DEVICE(BRCM_SDIO_43143_DEVICE_ID), |
988 | BRCMF_SDIO_DEVICE(BRCM_SDIO_43241_DEVICE_ID), | |
989 | BRCMF_SDIO_DEVICE(BRCM_SDIO_4329_DEVICE_ID), | |
990 | BRCMF_SDIO_DEVICE(BRCM_SDIO_4330_DEVICE_ID), | |
991 | BRCMF_SDIO_DEVICE(BRCM_SDIO_4334_DEVICE_ID), | |
992 | BRCMF_SDIO_DEVICE(BRCM_SDIO_43362_DEVICE_ID), | |
993 | BRCMF_SDIO_DEVICE(BRCM_SDIO_4335_4339_DEVICE_ID), | |
994 | BRCMF_SDIO_DEVICE(BRCM_SDIO_4354_DEVICE_ID), | |
995 | { /* end: all zeroes */ } | |
e49b06ba AS |
996 | }; |
997 | MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids); | |
998 | ||
999 | static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata; | |
1000 | ||
1001 | ||
e2dc9eea AS |
1002 | static int brcmf_ops_sdio_probe(struct sdio_func *func, |
1003 | const struct sdio_device_id *id) | |
1004 | { | |
1005 | int err; | |
1006 | struct brcmf_sdio_dev *sdiodev; | |
1007 | struct brcmf_bus *bus_if; | |
1008 | ||
1009 | brcmf_dbg(SDIO, "Enter\n"); | |
1010 | brcmf_dbg(SDIO, "Class=%x\n", func->class); | |
1011 | brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); | |
1012 | brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); | |
1013 | brcmf_dbg(SDIO, "Function#: %d\n", func->num); | |
1014 | ||
1015 | /* Consume func num 1 but dont do anything with it. */ | |
1016 | if (func->num == 1) | |
1017 | return 0; | |
1018 | ||
1019 | /* Ignore anything but func 2 */ | |
1020 | if (func->num != 2) | |
1021 | return -ENODEV; | |
1022 | ||
1023 | bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL); | |
1024 | if (!bus_if) | |
1025 | return -ENOMEM; | |
1026 | sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL); | |
1027 | if (!sdiodev) { | |
1028 | kfree(bus_if); | |
1029 | return -ENOMEM; | |
1030 | } | |
1031 | ||
36c4e7e4 AS |
1032 | /* store refs to functions used. mmc_card does |
1033 | * not hold the F0 function pointer. | |
1034 | */ | |
1035 | sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL); | |
1036 | sdiodev->func[0]->num = 0; | |
e2dc9eea AS |
1037 | sdiodev->func[1] = func->card->sdio_func[0]; |
1038 | sdiodev->func[2] = func; | |
1039 | ||
1040 | sdiodev->bus_if = bus_if; | |
1041 | bus_if->bus_priv.sdio = sdiodev; | |
943258b6 | 1042 | bus_if->proto_type = BRCMF_PROTO_BCDC; |
e2dc9eea AS |
1043 | dev_set_drvdata(&func->dev, bus_if); |
1044 | dev_set_drvdata(&sdiodev->func[1]->dev, bus_if); | |
1045 | sdiodev->dev = &sdiodev->func[1]->dev; | |
1046 | sdiodev->pdata = brcmfmac_sdio_pdata; | |
1047 | ||
61f663df CYT |
1048 | if (!sdiodev->pdata) |
1049 | brcmf_of_probe(sdiodev); | |
1050 | ||
e2dc9eea | 1051 | atomic_set(&sdiodev->suspend, false); |
e2dc9eea AS |
1052 | init_waitqueue_head(&sdiodev->request_word_wait); |
1053 | init_waitqueue_head(&sdiodev->request_buffer_wait); | |
1054 | ||
a39be27b AS |
1055 | brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n"); |
1056 | err = brcmf_sdiod_probe(sdiodev); | |
e2dc9eea AS |
1057 | if (err) { |
1058 | brcmf_err("F2 error, probe failed %d...\n", err); | |
1059 | goto fail; | |
1060 | } | |
1061 | ||
1062 | brcmf_dbg(SDIO, "F2 init completed...\n"); | |
1063 | return 0; | |
1064 | ||
1065 | fail: | |
1066 | dev_set_drvdata(&func->dev, NULL); | |
1067 | dev_set_drvdata(&sdiodev->func[1]->dev, NULL); | |
36c4e7e4 | 1068 | kfree(sdiodev->func[0]); |
e2dc9eea AS |
1069 | kfree(sdiodev); |
1070 | kfree(bus_if); | |
1071 | return err; | |
1072 | } | |
1073 | ||
1074 | static void brcmf_ops_sdio_remove(struct sdio_func *func) | |
1075 | { | |
1076 | struct brcmf_bus *bus_if; | |
1077 | struct brcmf_sdio_dev *sdiodev; | |
1078 | ||
1079 | brcmf_dbg(SDIO, "Enter\n"); | |
1080 | brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); | |
1081 | brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); | |
1082 | brcmf_dbg(SDIO, "Function: %d\n", func->num); | |
1083 | ||
1084 | if (func->num != 1 && func->num != 2) | |
1085 | return; | |
1086 | ||
1087 | bus_if = dev_get_drvdata(&func->dev); | |
1088 | if (bus_if) { | |
1089 | sdiodev = bus_if->bus_priv.sdio; | |
a39be27b | 1090 | brcmf_sdiod_remove(sdiodev); |
e2dc9eea AS |
1091 | |
1092 | dev_set_drvdata(&sdiodev->func[1]->dev, NULL); | |
1093 | dev_set_drvdata(&sdiodev->func[2]->dev, NULL); | |
1094 | ||
1095 | kfree(bus_if); | |
36c4e7e4 | 1096 | kfree(sdiodev->func[0]); |
e2dc9eea AS |
1097 | kfree(sdiodev); |
1098 | } | |
1099 | ||
1100 | brcmf_dbg(SDIO, "Exit\n"); | |
1101 | } | |
1102 | ||
1103 | #ifdef CONFIG_PM_SLEEP | |
a39be27b | 1104 | static int brcmf_ops_sdio_suspend(struct device *dev) |
e2dc9eea AS |
1105 | { |
1106 | mmc_pm_flag_t sdio_flags; | |
1107 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); | |
1108 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
1109 | int ret = 0; | |
1110 | ||
3e3831c4 | 1111 | brcmf_dbg(SDIO, "Enter\n"); |
e2dc9eea AS |
1112 | |
1113 | sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]); | |
1114 | if (!(sdio_flags & MMC_PM_KEEP_POWER)) { | |
1115 | brcmf_err("Host can't keep power while suspended\n"); | |
1116 | return -EINVAL; | |
1117 | } | |
1118 | ||
3e3831c4 AS |
1119 | atomic_set(&sdiodev->suspend, true); |
1120 | ||
e2dc9eea AS |
1121 | ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER); |
1122 | if (ret) { | |
1123 | brcmf_err("Failed to set pm_flags\n"); | |
3e3831c4 | 1124 | atomic_set(&sdiodev->suspend, false); |
e2dc9eea AS |
1125 | return ret; |
1126 | } | |
1127 | ||
82d7f3c1 | 1128 | brcmf_sdio_wd_timer(sdiodev->bus, 0); |
e2dc9eea AS |
1129 | |
1130 | return ret; | |
1131 | } | |
1132 | ||
a39be27b | 1133 | static int brcmf_ops_sdio_resume(struct device *dev) |
e2dc9eea AS |
1134 | { |
1135 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); | |
1136 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
1137 | ||
3e3831c4 | 1138 | brcmf_dbg(SDIO, "Enter\n"); |
82d7f3c1 | 1139 | brcmf_sdio_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS); |
e2dc9eea AS |
1140 | atomic_set(&sdiodev->suspend, false); |
1141 | return 0; | |
1142 | } | |
1143 | ||
1144 | static const struct dev_pm_ops brcmf_sdio_pm_ops = { | |
a39be27b AS |
1145 | .suspend = brcmf_ops_sdio_suspend, |
1146 | .resume = brcmf_ops_sdio_resume, | |
e2dc9eea AS |
1147 | }; |
1148 | #endif /* CONFIG_PM_SLEEP */ | |
1149 | ||
1150 | static struct sdio_driver brcmf_sdmmc_driver = { | |
1151 | .probe = brcmf_ops_sdio_probe, | |
1152 | .remove = brcmf_ops_sdio_remove, | |
1153 | .name = BRCMFMAC_SDIO_PDATA_NAME, | |
1154 | .id_table = brcmf_sdmmc_ids, | |
e2dc9eea | 1155 | .drv = { |
0b0acd8c FL |
1156 | .owner = THIS_MODULE, |
1157 | #ifdef CONFIG_PM_SLEEP | |
e2dc9eea | 1158 | .pm = &brcmf_sdio_pm_ops, |
e2dc9eea | 1159 | #endif /* CONFIG_PM_SLEEP */ |
0b0acd8c | 1160 | }, |
e2dc9eea AS |
1161 | }; |
1162 | ||
c2d23c70 | 1163 | static int __init brcmf_sdio_pd_probe(struct platform_device *pdev) |
e2dc9eea AS |
1164 | { |
1165 | brcmf_dbg(SDIO, "Enter\n"); | |
1166 | ||
1167 | brcmfmac_sdio_pdata = dev_get_platdata(&pdev->dev); | |
1168 | ||
1169 | if (brcmfmac_sdio_pdata->power_on) | |
1170 | brcmfmac_sdio_pdata->power_on(); | |
1171 | ||
1172 | return 0; | |
1173 | } | |
1174 | ||
1175 | static int brcmf_sdio_pd_remove(struct platform_device *pdev) | |
1176 | { | |
1177 | brcmf_dbg(SDIO, "Enter\n"); | |
1178 | ||
1179 | if (brcmfmac_sdio_pdata->power_off) | |
1180 | brcmfmac_sdio_pdata->power_off(); | |
1181 | ||
1182 | sdio_unregister_driver(&brcmf_sdmmc_driver); | |
1183 | ||
1184 | return 0; | |
1185 | } | |
1186 | ||
1187 | static struct platform_driver brcmf_sdio_pd = { | |
1188 | .remove = brcmf_sdio_pd_remove, | |
1189 | .driver = { | |
1190 | .name = BRCMFMAC_SDIO_PDATA_NAME, | |
1191 | .owner = THIS_MODULE, | |
1192 | } | |
1193 | }; | |
1194 | ||
1195 | void brcmf_sdio_register(void) | |
1196 | { | |
1197 | int ret; | |
1198 | ||
1199 | ret = sdio_register_driver(&brcmf_sdmmc_driver); | |
1200 | if (ret) | |
1201 | brcmf_err("sdio_register_driver failed: %d\n", ret); | |
1202 | } | |
1203 | ||
1204 | void brcmf_sdio_exit(void) | |
1205 | { | |
1206 | brcmf_dbg(SDIO, "Enter\n"); | |
1207 | ||
1208 | if (brcmfmac_sdio_pdata) | |
1209 | platform_driver_unregister(&brcmf_sdio_pd); | |
1210 | else | |
1211 | sdio_unregister_driver(&brcmf_sdmmc_driver); | |
1212 | } | |
1213 | ||
1214 | void __init brcmf_sdio_init(void) | |
1215 | { | |
1216 | int ret; | |
1217 | ||
1218 | brcmf_dbg(SDIO, "Enter\n"); | |
1219 | ||
1220 | ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe); | |
1221 | if (ret == -ENODEV) | |
1222 | brcmf_dbg(SDIO, "No platform data available.\n"); | |
1223 | } |