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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> | |
568ba389 | 41 | #include <chipcommon.h> |
5b435de0 | 42 | #include <soc.h> |
568ba389 | 43 | #include "chip.h" |
d14f78b9 | 44 | #include "bus.h" |
a8e8ed34 | 45 | #include "debug.h" |
888bf76e | 46 | #include "sdio.h" |
61f663df | 47 | #include "of.h" |
5b435de0 AS |
48 | |
49 | #define SDIOH_API_ACCESS_RETRY_LIMIT 2 | |
50 | ||
e49b06ba AS |
51 | #define DMA_ALIGN_MASK 0x03 |
52 | ||
53 | #define SDIO_FUNC1_BLOCKSIZE 64 | |
54 | #define SDIO_FUNC2_BLOCKSIZE 512 | |
71370eb8 AS |
55 | /* Maximum milliseconds to wait for F2 to come up */ |
56 | #define SDIO_WAIT_F2RDY 3000 | |
57 | ||
af1fa210 AS |
58 | #define BRCMF_DEFAULT_TXGLOM_SIZE 32 /* max tx frames in glom chain */ |
59 | #define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */ | |
60 | ||
99824643 AS |
61 | struct brcmf_sdiod_freezer { |
62 | atomic_t freezing; | |
63 | atomic_t thread_count; | |
64 | u32 frozen_count; | |
65 | wait_queue_head_t thread_freeze; | |
66 | struct completion resumed; | |
67 | }; | |
68 | ||
af1fa210 AS |
69 | static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE; |
70 | module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0); | |
71 | MODULE_PARM_DESC(txglomsz, "maximum tx packet chain size [SDIO]"); | |
668761ac | 72 | |
a39be27b | 73 | static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id) |
ba89bf19 | 74 | { |
5b3c1832 HM |
75 | struct brcmf_bus *bus_if = dev_get_drvdata(dev_id); |
76 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
ba89bf19 | 77 | |
668761ac | 78 | brcmf_dbg(INTR, "OOB intr triggered\n"); |
ba89bf19 | 79 | |
668761ac | 80 | /* out-of-band interrupt is level-triggered which won't |
ba89bf19 FL |
81 | * be cleared until dpc |
82 | */ | |
83 | if (sdiodev->irq_en) { | |
84 | disable_irq_nosync(irq); | |
85 | sdiodev->irq_en = false; | |
86 | } | |
87 | ||
82d7f3c1 | 88 | brcmf_sdio_isr(sdiodev->bus); |
ba89bf19 FL |
89 | |
90 | return IRQ_HANDLED; | |
91 | } | |
92 | ||
a39be27b | 93 | static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func) |
5b435de0 | 94 | { |
5b3c1832 HM |
95 | struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev); |
96 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
5b435de0 | 97 | |
668761ac | 98 | brcmf_dbg(INTR, "IB intr triggered\n"); |
5b435de0 | 99 | |
82d7f3c1 | 100 | brcmf_sdio_isr(sdiodev->bus); |
5b435de0 AS |
101 | } |
102 | ||
fbf59108 | 103 | /* dummy handler for SDIO function 2 interrupt */ |
a39be27b | 104 | static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func) |
fbf59108 FL |
105 | { |
106 | } | |
107 | ||
a39be27b | 108 | int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev) |
5b435de0 | 109 | { |
668761ac HM |
110 | int ret = 0; |
111 | u8 data; | |
568ba389 | 112 | u32 addr, gpiocontrol; |
668761ac | 113 | unsigned long flags; |
5b435de0 | 114 | |
668761ac HM |
115 | if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) { |
116 | brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n", | |
117 | sdiodev->pdata->oob_irq_nr); | |
118 | ret = request_irq(sdiodev->pdata->oob_irq_nr, | |
a39be27b | 119 | brcmf_sdiod_oob_irqhandler, |
668761ac HM |
120 | sdiodev->pdata->oob_irq_flags, |
121 | "brcmf_oob_intr", | |
122 | &sdiodev->func[1]->dev); | |
123 | if (ret != 0) { | |
124 | brcmf_err("request_irq failed %d\n", ret); | |
125 | return ret; | |
126 | } | |
127 | sdiodev->oob_irq_requested = true; | |
128 | spin_lock_init(&sdiodev->irq_en_lock); | |
129 | spin_lock_irqsave(&sdiodev->irq_en_lock, flags); | |
130 | sdiodev->irq_en = true; | |
131 | spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags); | |
132 | ||
133 | ret = enable_irq_wake(sdiodev->pdata->oob_irq_nr); | |
134 | if (ret != 0) { | |
135 | brcmf_err("enable_irq_wake failed %d\n", ret); | |
136 | return ret; | |
137 | } | |
138 | sdiodev->irq_wake = true; | |
139 | ||
140 | sdio_claim_host(sdiodev->func[1]); | |
141 | ||
568ba389 HG |
142 | if (sdiodev->bus_if->chip == BRCM_CC_43362_CHIP_ID) { |
143 | /* assign GPIO to SDIO core */ | |
144 | addr = CORE_CC_REG(SI_ENUM_BASE, gpiocontrol); | |
145 | gpiocontrol = brcmf_sdiod_regrl(sdiodev, addr, &ret); | |
146 | gpiocontrol |= 0x2; | |
147 | brcmf_sdiod_regwl(sdiodev, addr, gpiocontrol, &ret); | |
148 | ||
149 | brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_SELECT, 0xf, | |
150 | &ret); | |
151 | brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_OUT, 0, &ret); | |
152 | brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_EN, 0x2, &ret); | |
153 | } | |
154 | ||
668761ac | 155 | /* must configure SDIO_CCCR_IENx to enable irq */ |
a39be27b | 156 | data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret); |
668761ac | 157 | data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1; |
a39be27b | 158 | brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret); |
668761ac HM |
159 | |
160 | /* redirect, configure and enable io for interrupt signal */ | |
161 | data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE; | |
162 | if (sdiodev->pdata->oob_irq_flags & IRQF_TRIGGER_HIGH) | |
163 | data |= SDIO_SEPINT_ACT_HI; | |
a39be27b | 164 | brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret); |
668761ac HM |
165 | |
166 | sdio_release_host(sdiodev->func[1]); | |
167 | } else { | |
168 | brcmf_dbg(SDIO, "Entering\n"); | |
169 | sdio_claim_host(sdiodev->func[1]); | |
a39be27b AS |
170 | sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler); |
171 | sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler); | |
668761ac HM |
172 | sdio_release_host(sdiodev->func[1]); |
173 | } | |
5b435de0 AS |
174 | |
175 | return 0; | |
176 | } | |
177 | ||
a39be27b | 178 | int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev) |
5b435de0 | 179 | { |
c3203374 | 180 | brcmf_dbg(SDIO, "Entering\n"); |
5b435de0 | 181 | |
668761ac HM |
182 | if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) { |
183 | sdio_claim_host(sdiodev->func[1]); | |
a39be27b AS |
184 | brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL); |
185 | brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL); | |
668761ac HM |
186 | sdio_release_host(sdiodev->func[1]); |
187 | ||
188 | if (sdiodev->oob_irq_requested) { | |
189 | sdiodev->oob_irq_requested = false; | |
190 | if (sdiodev->irq_wake) { | |
191 | disable_irq_wake(sdiodev->pdata->oob_irq_nr); | |
192 | sdiodev->irq_wake = false; | |
193 | } | |
194 | free_irq(sdiodev->pdata->oob_irq_nr, | |
195 | &sdiodev->func[1]->dev); | |
196 | sdiodev->irq_en = false; | |
197 | } | |
198 | } else { | |
199 | sdio_claim_host(sdiodev->func[1]); | |
200 | sdio_release_irq(sdiodev->func[2]); | |
201 | sdio_release_irq(sdiodev->func[1]); | |
202 | sdio_release_host(sdiodev->func[1]); | |
203 | } | |
5b435de0 AS |
204 | |
205 | return 0; | |
206 | } | |
207 | ||
a1ce7a0d AS |
208 | void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev, |
209 | enum brcmf_sdiod_state state) | |
210 | { | |
211 | if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM || | |
212 | state == sdiodev->state) | |
213 | return; | |
214 | ||
215 | brcmf_dbg(TRACE, "%d -> %d\n", sdiodev->state, state); | |
216 | switch (sdiodev->state) { | |
217 | case BRCMF_SDIOD_DATA: | |
218 | /* any other state means bus interface is down */ | |
219 | brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN); | |
220 | break; | |
221 | case BRCMF_SDIOD_DOWN: | |
222 | /* transition from DOWN to DATA means bus interface is up */ | |
223 | if (state == BRCMF_SDIOD_DATA) | |
224 | brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_UP); | |
225 | break; | |
226 | default: | |
227 | break; | |
228 | } | |
229 | sdiodev->state = state; | |
230 | } | |
231 | ||
36c4e7e4 AS |
232 | static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func, |
233 | uint regaddr, u8 byte) | |
e49b06ba | 234 | { |
e49b06ba AS |
235 | int err_ret; |
236 | ||
237 | /* | |
238 | * Can only directly write to some F0 registers. | |
36c4e7e4 | 239 | * Handle CCCR_IENx and CCCR_ABORT command |
e49b06ba AS |
240 | * as a special case. |
241 | */ | |
71370eb8 | 242 | if ((regaddr == SDIO_CCCR_ABORT) || |
36c4e7e4 AS |
243 | (regaddr == SDIO_CCCR_IENx)) |
244 | sdio_writeb(func, byte, regaddr, &err_ret); | |
245 | else | |
246 | sdio_f0_writeb(func, byte, regaddr, &err_ret); | |
e49b06ba AS |
247 | |
248 | return err_ret; | |
249 | } | |
250 | ||
71c60cf2 AS |
251 | static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn, |
252 | u32 addr, u8 regsz, void *data, bool write) | |
e49b06ba | 253 | { |
71c60cf2 AS |
254 | struct sdio_func *func; |
255 | int ret; | |
e49b06ba | 256 | |
71c60cf2 AS |
257 | brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n", |
258 | write, fn, addr, regsz); | |
e49b06ba | 259 | |
71c60cf2 AS |
260 | /* only allow byte access on F0 */ |
261 | if (WARN_ON(regsz > 1 && !fn)) | |
262 | return -EINVAL; | |
263 | func = sdiodev->func[fn]; | |
264 | ||
265 | switch (regsz) { | |
266 | case sizeof(u8): | |
267 | if (write) { | |
268 | if (fn) | |
269 | sdio_writeb(func, *(u8 *)data, addr, &ret); | |
270 | else | |
271 | ret = brcmf_sdiod_f0_writeb(func, addr, | |
272 | *(u8 *)data); | |
e49b06ba | 273 | } else { |
71c60cf2 AS |
274 | if (fn) |
275 | *(u8 *)data = sdio_readb(func, addr, &ret); | |
276 | else | |
277 | *(u8 *)data = sdio_f0_readb(func, addr, &ret); | |
e49b06ba | 278 | } |
71c60cf2 AS |
279 | break; |
280 | case sizeof(u16): | |
281 | if (write) | |
282 | sdio_writew(func, *(u16 *)data, addr, &ret); | |
283 | else | |
284 | *(u16 *)data = sdio_readw(func, addr, &ret); | |
285 | break; | |
286 | case sizeof(u32): | |
287 | if (write) | |
288 | sdio_writel(func, *(u32 *)data, addr, &ret); | |
289 | else | |
290 | *(u32 *)data = sdio_readl(func, addr, &ret); | |
291 | break; | |
292 | default: | |
293 | brcmf_err("invalid size: %d\n", regsz); | |
294 | break; | |
e49b06ba AS |
295 | } |
296 | ||
4d1a4f16 AS |
297 | if (ret) |
298 | brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n", | |
299 | write ? "write" : "read", fn, addr, ret); | |
300 | ||
71c60cf2 | 301 | return ret; |
e49b06ba AS |
302 | } |
303 | ||
71c60cf2 AS |
304 | static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr, |
305 | u8 regsz, void *data, bool write) | |
e49b06ba | 306 | { |
4d1a4f16 | 307 | u8 func; |
71c60cf2 AS |
308 | s32 retry = 0; |
309 | int ret; | |
e49b06ba | 310 | |
a1ce7a0d | 311 | if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM) |
bb350711 AS |
312 | return -ENOMEDIUM; |
313 | ||
71c60cf2 AS |
314 | /* |
315 | * figure out how to read the register based on address range | |
316 | * 0x00 ~ 0x7FF: function 0 CCCR and FBR | |
317 | * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers | |
318 | * The rest: function 1 silicon backplane core registers | |
319 | */ | |
320 | if ((addr & ~REG_F0_REG_MASK) == 0) | |
4d1a4f16 | 321 | func = SDIO_FUNC_0; |
71c60cf2 | 322 | else |
4d1a4f16 | 323 | func = SDIO_FUNC_1; |
e49b06ba | 324 | |
71c60cf2 AS |
325 | do { |
326 | if (!write) | |
327 | memset(data, 0, regsz); | |
328 | /* for retry wait for 1 ms till bus get settled down */ | |
329 | if (retry) | |
330 | usleep_range(1000, 2000); | |
4d1a4f16 | 331 | ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz, |
71c60cf2 | 332 | data, write); |
bb350711 AS |
333 | } while (ret != 0 && ret != -ENOMEDIUM && |
334 | retry++ < SDIOH_API_ACCESS_RETRY_LIMIT); | |
e49b06ba | 335 | |
bb350711 | 336 | if (ret == -ENOMEDIUM) |
a1ce7a0d | 337 | brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); |
4d1a4f16 AS |
338 | else if (ret != 0) { |
339 | /* | |
340 | * SleepCSR register access can fail when | |
341 | * waking up the device so reduce this noise | |
342 | * in the logs. | |
343 | */ | |
344 | if (addr != SBSDIO_FUNC1_SLEEPCSR) | |
345 | brcmf_err("failed to %s data F%d@0x%05x, err: %d\n", | |
346 | write ? "write" : "read", func, addr, ret); | |
347 | else | |
348 | brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n", | |
349 | write ? "write" : "read", func, addr, ret); | |
350 | } | |
71c60cf2 | 351 | return ret; |
e49b06ba AS |
352 | } |
353 | ||
356bae6f | 354 | static int |
a39be27b | 355 | brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address) |
5b435de0 | 356 | { |
7d9cfc28 FL |
357 | int err = 0, i; |
358 | u8 addr[3]; | |
7d9cfc28 | 359 | |
a1ce7a0d | 360 | if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM) |
bb350711 AS |
361 | return -ENOMEDIUM; |
362 | ||
7d9cfc28 FL |
363 | addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK; |
364 | addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK; | |
365 | addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK; | |
366 | ||
367 | for (i = 0; i < 3; i++) { | |
71c60cf2 AS |
368 | err = brcmf_sdiod_regrw_helper(sdiodev, |
369 | SBSDIO_FUNC1_SBADDRLOW + i, | |
370 | sizeof(u8), &addr[i], true); | |
7d9cfc28 | 371 | if (err) { |
71c60cf2 | 372 | brcmf_err("failed at addr: 0x%0x\n", |
7d9cfc28 FL |
373 | SBSDIO_FUNC1_SBADDRLOW + i); |
374 | break; | |
375 | } | |
376 | } | |
5b435de0 AS |
377 | |
378 | return err; | |
379 | } | |
380 | ||
356bae6f | 381 | static int |
a39be27b | 382 | brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr) |
356bae6f FL |
383 | { |
384 | uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK; | |
385 | int err = 0; | |
386 | ||
387 | if (bar0 != sdiodev->sbwad) { | |
a39be27b | 388 | err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0); |
356bae6f FL |
389 | if (err) |
390 | return err; | |
391 | ||
392 | sdiodev->sbwad = bar0; | |
393 | } | |
394 | ||
395 | *addr &= SBSDIO_SB_OFT_ADDR_MASK; | |
396 | ||
397 | if (width == 4) | |
398 | *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
a39be27b | 403 | u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) |
e9b8d91d FL |
404 | { |
405 | u8 data; | |
406 | int retval; | |
407 | ||
c3203374 | 408 | brcmf_dbg(SDIO, "addr:0x%08x\n", addr); |
71c60cf2 AS |
409 | retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, |
410 | false); | |
c3203374 | 411 | brcmf_dbg(SDIO, "data:0x%02x\n", data); |
e9b8d91d FL |
412 | |
413 | if (ret) | |
414 | *ret = retval; | |
415 | ||
416 | return data; | |
417 | } | |
418 | ||
a39be27b | 419 | u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) |
e9b8d91d FL |
420 | { |
421 | u32 data; | |
422 | int retval; | |
423 | ||
c3203374 | 424 | brcmf_dbg(SDIO, "addr:0x%08x\n", addr); |
71c60cf2 AS |
425 | retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr); |
426 | if (retval) | |
427 | goto done; | |
428 | retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, | |
429 | false); | |
c3203374 | 430 | brcmf_dbg(SDIO, "data:0x%08x\n", data); |
e9b8d91d | 431 | |
71c60cf2 | 432 | done: |
e9b8d91d FL |
433 | if (ret) |
434 | *ret = retval; | |
435 | ||
436 | return data; | |
437 | } | |
438 | ||
a39be27b | 439 | void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, |
e9b8d91d FL |
440 | u8 data, int *ret) |
441 | { | |
442 | int retval; | |
443 | ||
c3203374 | 444 | brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data); |
71c60cf2 AS |
445 | retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, |
446 | true); | |
e9b8d91d FL |
447 | if (ret) |
448 | *ret = retval; | |
449 | } | |
450 | ||
a39be27b | 451 | void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, |
e9b8d91d FL |
452 | u32 data, int *ret) |
453 | { | |
454 | int retval; | |
455 | ||
c3203374 | 456 | brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data); |
71c60cf2 AS |
457 | retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr); |
458 | if (retval) | |
459 | goto done; | |
460 | retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, | |
461 | true); | |
e9b8d91d | 462 | |
71c60cf2 | 463 | done: |
e9b8d91d FL |
464 | if (ret) |
465 | *ret = retval; | |
466 | } | |
467 | ||
a39be27b | 468 | static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn, |
4aef267e AS |
469 | bool write, u32 addr, struct sk_buff *pkt) |
470 | { | |
471 | unsigned int req_sz; | |
bb350711 | 472 | int err; |
4aef267e | 473 | |
4aef267e AS |
474 | /* Single skb use the standard mmc interface */ |
475 | req_sz = pkt->len + 3; | |
476 | req_sz &= (uint)~3; | |
477 | ||
478 | if (write) | |
bb350711 AS |
479 | err = sdio_memcpy_toio(sdiodev->func[fn], addr, |
480 | ((u8 *)(pkt->data)), req_sz); | |
4aef267e | 481 | else if (fn == 1) |
bb350711 AS |
482 | err = sdio_memcpy_fromio(sdiodev->func[fn], ((u8 *)(pkt->data)), |
483 | addr, req_sz); | |
4aef267e AS |
484 | else |
485 | /* function 2 read is FIFO operation */ | |
bb350711 AS |
486 | err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr, |
487 | req_sz); | |
488 | if (err == -ENOMEDIUM) | |
a1ce7a0d | 489 | brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); |
bb350711 | 490 | return err; |
4aef267e AS |
491 | } |
492 | ||
78b3f1c5 | 493 | /** |
a39be27b | 494 | * brcmf_sdiod_sglist_rw - SDIO interface function for block data access |
78b3f1c5 FL |
495 | * @sdiodev: brcmfmac sdio device |
496 | * @fn: SDIO function number | |
497 | * @write: direction flag | |
498 | * @addr: dongle memory address as source/destination | |
499 | * @pkt: skb pointer | |
500 | * | |
501 | * This function takes the respbonsibility as the interface function to MMC | |
502 | * stack for block data access. It assumes that the skb passed down by the | |
503 | * caller has already been padded and aligned. | |
504 | */ | |
a39be27b AS |
505 | static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn, |
506 | bool write, u32 addr, | |
507 | struct sk_buff_head *pktlist) | |
78b3f1c5 | 508 | { |
354b75bf | 509 | unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset; |
71201496 | 510 | unsigned int max_req_sz, orig_offset, dst_offset; |
3f782744 | 511 | unsigned short max_seg_cnt, seg_sz; |
3b81a680 FL |
512 | unsigned char *pkt_data, *orig_data, *dst_data; |
513 | struct sk_buff *pkt_next = NULL, *local_pkt_next; | |
514 | struct sk_buff_head local_list, *target_list; | |
354b75bf FL |
515 | struct mmc_request mmc_req; |
516 | struct mmc_command mmc_cmd; | |
517 | struct mmc_data mmc_dat; | |
354b75bf | 518 | struct scatterlist *sgl; |
354b75bf FL |
519 | int ret = 0; |
520 | ||
521 | if (!pktlist->qlen) | |
522 | return -EINVAL; | |
78b3f1c5 | 523 | |
3b81a680 FL |
524 | target_list = pktlist; |
525 | /* for host with broken sg support, prepare a page aligned list */ | |
526 | __skb_queue_head_init(&local_list); | |
527 | if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) { | |
528 | req_sz = 0; | |
529 | skb_queue_walk(pktlist, pkt_next) | |
530 | req_sz += pkt_next->len; | |
531 | req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize); | |
532 | while (req_sz > PAGE_SIZE) { | |
533 | pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE); | |
534 | if (pkt_next == NULL) { | |
535 | ret = -ENOMEM; | |
536 | goto exit; | |
537 | } | |
538 | __skb_queue_tail(&local_list, pkt_next); | |
539 | req_sz -= PAGE_SIZE; | |
540 | } | |
541 | pkt_next = brcmu_pkt_buf_get_skb(req_sz); | |
542 | if (pkt_next == NULL) { | |
543 | ret = -ENOMEM; | |
544 | goto exit; | |
545 | } | |
546 | __skb_queue_tail(&local_list, pkt_next); | |
547 | target_list = &local_list; | |
548 | } | |
549 | ||
354b75bf | 550 | func_blk_sz = sdiodev->func[fn]->cur_blksize; |
71201496 AS |
551 | max_req_sz = sdiodev->max_request_size; |
552 | max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count, | |
553 | target_list->qlen); | |
3b81a680 | 554 | seg_sz = target_list->qlen; |
354b75bf | 555 | pkt_offset = 0; |
3b81a680 | 556 | pkt_next = target_list->next; |
354b75bf | 557 | |
7f9a8dc8 AS |
558 | memset(&mmc_req, 0, sizeof(struct mmc_request)); |
559 | memset(&mmc_cmd, 0, sizeof(struct mmc_command)); | |
560 | memset(&mmc_dat, 0, sizeof(struct mmc_data)); | |
561 | ||
af1fa210 | 562 | mmc_dat.sg = sdiodev->sgtable.sgl; |
7f9a8dc8 AS |
563 | mmc_dat.blksz = func_blk_sz; |
564 | mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; | |
565 | mmc_cmd.opcode = SD_IO_RW_EXTENDED; | |
566 | mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */ | |
567 | mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */ | |
568 | mmc_cmd.arg |= 1<<27; /* block mode */ | |
569 | /* for function 1 the addr will be incremented */ | |
570 | mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0; | |
571 | mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC; | |
572 | mmc_req.cmd = &mmc_cmd; | |
573 | mmc_req.data = &mmc_dat; | |
574 | ||
354b75bf FL |
575 | while (seg_sz) { |
576 | req_sz = 0; | |
577 | sg_cnt = 0; | |
af1fa210 | 578 | sgl = sdiodev->sgtable.sgl; |
354b75bf | 579 | /* prep sg table */ |
3b81a680 | 580 | while (pkt_next != (struct sk_buff *)target_list) { |
354b75bf FL |
581 | pkt_data = pkt_next->data + pkt_offset; |
582 | sg_data_sz = pkt_next->len - pkt_offset; | |
71201496 AS |
583 | if (sg_data_sz > sdiodev->max_segment_size) |
584 | sg_data_sz = sdiodev->max_segment_size; | |
354b75bf FL |
585 | if (sg_data_sz > max_req_sz - req_sz) |
586 | sg_data_sz = max_req_sz - req_sz; | |
587 | ||
588 | sg_set_buf(sgl, pkt_data, sg_data_sz); | |
589 | ||
590 | sg_cnt++; | |
591 | sgl = sg_next(sgl); | |
592 | req_sz += sg_data_sz; | |
593 | pkt_offset += sg_data_sz; | |
594 | if (pkt_offset == pkt_next->len) { | |
595 | pkt_offset = 0; | |
596 | pkt_next = pkt_next->next; | |
597 | } | |
598 | ||
3f782744 | 599 | if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt) |
354b75bf FL |
600 | break; |
601 | } | |
602 | seg_sz -= sg_cnt; | |
603 | ||
604 | if (req_sz % func_blk_sz != 0) { | |
605 | brcmf_err("sg request length %u is not %u aligned\n", | |
606 | req_sz, func_blk_sz); | |
3b81a680 FL |
607 | ret = -ENOTBLK; |
608 | goto exit; | |
354b75bf | 609 | } |
7f9a8dc8 | 610 | |
354b75bf | 611 | mmc_dat.sg_len = sg_cnt; |
354b75bf | 612 | mmc_dat.blocks = req_sz / func_blk_sz; |
354b75bf FL |
613 | mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */ |
614 | mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */ | |
7f9a8dc8 | 615 | /* incrementing addr for function 1 */ |
354b75bf FL |
616 | if (fn == 1) |
617 | addr += req_sz; | |
618 | ||
619 | mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card); | |
71201496 | 620 | mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req); |
354b75bf FL |
621 | |
622 | ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error; | |
bb350711 | 623 | if (ret == -ENOMEDIUM) { |
a1ce7a0d | 624 | brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); |
bb350711 AS |
625 | break; |
626 | } else if (ret != 0) { | |
354b75bf FL |
627 | brcmf_err("CMD53 sg block %s failed %d\n", |
628 | write ? "write" : "read", ret); | |
629 | ret = -EIO; | |
630 | break; | |
631 | } | |
632 | } | |
633 | ||
3b81a680 FL |
634 | if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) { |
635 | local_pkt_next = local_list.next; | |
636 | orig_offset = 0; | |
637 | skb_queue_walk(pktlist, pkt_next) { | |
638 | dst_offset = 0; | |
639 | do { | |
640 | req_sz = local_pkt_next->len - orig_offset; | |
641 | req_sz = min_t(uint, pkt_next->len - dst_offset, | |
642 | req_sz); | |
643 | orig_data = local_pkt_next->data + orig_offset; | |
644 | dst_data = pkt_next->data + dst_offset; | |
645 | memcpy(dst_data, orig_data, req_sz); | |
646 | orig_offset += req_sz; | |
647 | dst_offset += req_sz; | |
648 | if (orig_offset == local_pkt_next->len) { | |
649 | orig_offset = 0; | |
650 | local_pkt_next = local_pkt_next->next; | |
651 | } | |
652 | if (dst_offset == pkt_next->len) | |
653 | break; | |
654 | } while (!skb_queue_empty(&local_list)); | |
655 | } | |
656 | } | |
657 | ||
658 | exit: | |
af1fa210 | 659 | sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents); |
3b81a680 FL |
660 | while ((pkt_next = __skb_dequeue(&local_list)) != NULL) |
661 | brcmu_pkt_buf_free_skb(pkt_next); | |
354b75bf FL |
662 | |
663 | return ret; | |
78b3f1c5 FL |
664 | } |
665 | ||
a7cdd821 | 666 | int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) |
5adfeb63 AS |
667 | { |
668 | struct sk_buff *mypkt; | |
669 | int err; | |
670 | ||
671 | mypkt = brcmu_pkt_buf_get_skb(nbytes); | |
672 | if (!mypkt) { | |
5e8149f5 | 673 | brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", |
5adfeb63 AS |
674 | nbytes); |
675 | return -EIO; | |
676 | } | |
677 | ||
a7cdd821 | 678 | err = brcmf_sdiod_recv_pkt(sdiodev, mypkt); |
5adfeb63 AS |
679 | if (!err) |
680 | memcpy(buf, mypkt->data, nbytes); | |
681 | ||
682 | brcmu_pkt_buf_free_skb(mypkt); | |
683 | return err; | |
684 | } | |
685 | ||
a7cdd821 | 686 | int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt) |
5adfeb63 | 687 | { |
a7cdd821 | 688 | u32 addr = sdiodev->sbwad; |
5adfeb63 AS |
689 | int err = 0; |
690 | ||
a7cdd821 | 691 | brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len); |
5adfeb63 | 692 | |
a7cdd821 | 693 | err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); |
5adfeb63 | 694 | if (err) |
7057fd00 | 695 | goto done; |
5b435de0 | 696 | |
a7cdd821 | 697 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt); |
5adfeb63 | 698 | |
7057fd00 | 699 | done: |
5adfeb63 AS |
700 | return err; |
701 | } | |
702 | ||
a7cdd821 AS |
703 | int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev, |
704 | struct sk_buff_head *pktq, uint totlen) | |
5adfeb63 | 705 | { |
a413e39a AS |
706 | struct sk_buff *glom_skb; |
707 | struct sk_buff *skb; | |
a7cdd821 | 708 | u32 addr = sdiodev->sbwad; |
5adfeb63 AS |
709 | int err = 0; |
710 | ||
a7cdd821 AS |
711 | brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", |
712 | addr, pktq->qlen); | |
5adfeb63 | 713 | |
a7cdd821 | 714 | err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); |
5adfeb63 | 715 | if (err) |
7057fd00 | 716 | goto done; |
5b435de0 | 717 | |
a413e39a | 718 | if (pktq->qlen == 1) |
a7cdd821 AS |
719 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, |
720 | pktq->next); | |
a413e39a AS |
721 | else if (!sdiodev->sg_support) { |
722 | glom_skb = brcmu_pkt_buf_get_skb(totlen); | |
723 | if (!glom_skb) | |
724 | return -ENOMEM; | |
a7cdd821 AS |
725 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, |
726 | glom_skb); | |
a413e39a AS |
727 | if (err) |
728 | goto done; | |
729 | ||
730 | skb_queue_walk(pktq, skb) { | |
731 | memcpy(skb->data, glom_skb->data, skb->len); | |
732 | skb_pull(glom_skb, skb->len); | |
733 | } | |
734 | } else | |
a7cdd821 AS |
735 | err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr, |
736 | pktq); | |
5b435de0 | 737 | |
7057fd00 | 738 | done: |
5adfeb63 | 739 | return err; |
5b435de0 AS |
740 | } |
741 | ||
a7cdd821 | 742 | int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) |
5adfeb63 AS |
743 | { |
744 | struct sk_buff *mypkt; | |
a7cdd821 | 745 | u32 addr = sdiodev->sbwad; |
5adfeb63 AS |
746 | int err; |
747 | ||
748 | mypkt = brcmu_pkt_buf_get_skb(nbytes); | |
749 | if (!mypkt) { | |
5e8149f5 | 750 | brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", |
5adfeb63 AS |
751 | nbytes); |
752 | return -EIO; | |
753 | } | |
754 | ||
755 | memcpy(mypkt->data, buf, nbytes); | |
4aef267e | 756 | |
a7cdd821 | 757 | err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); |
4aef267e | 758 | |
fcaac2b1 | 759 | if (!err) |
a7cdd821 AS |
760 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr, |
761 | mypkt); | |
5adfeb63 AS |
762 | |
763 | brcmu_pkt_buf_free_skb(mypkt); | |
764 | return err; | |
765 | ||
766 | } | |
767 | ||
a7cdd821 AS |
768 | int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev, |
769 | struct sk_buff_head *pktq) | |
5b435de0 | 770 | { |
c8cce1f9 | 771 | struct sk_buff *skb; |
a7cdd821 | 772 | u32 addr = sdiodev->sbwad; |
fcaac2b1 | 773 | int err; |
5b435de0 | 774 | |
a7cdd821 | 775 | brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen); |
5b435de0 | 776 | |
a7cdd821 | 777 | err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); |
fcaac2b1 AS |
778 | if (err) |
779 | return err; | |
5b435de0 | 780 | |
c8cce1f9 AS |
781 | if (pktq->qlen == 1 || !sdiodev->sg_support) |
782 | skb_queue_walk(pktq, skb) { | |
a7cdd821 AS |
783 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, |
784 | addr, skb); | |
c8cce1f9 AS |
785 | if (err) |
786 | break; | |
787 | } | |
788 | else | |
a7cdd821 AS |
789 | err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr, |
790 | pktq); | |
c8cce1f9 AS |
791 | |
792 | return err; | |
5b435de0 AS |
793 | } |
794 | ||
ba540b01 | 795 | int |
a39be27b AS |
796 | brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address, |
797 | u8 *data, uint size) | |
5b435de0 | 798 | { |
ba540b01 FL |
799 | int bcmerror = 0; |
800 | struct sk_buff *pkt; | |
801 | u32 sdaddr; | |
802 | uint dsize; | |
803 | ||
804 | dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); | |
805 | pkt = dev_alloc_skb(dsize); | |
806 | if (!pkt) { | |
807 | brcmf_err("dev_alloc_skb failed: len %d\n", dsize); | |
808 | return -EIO; | |
809 | } | |
810 | pkt->priority = 0; | |
4c6e869d | 811 | |
ba540b01 FL |
812 | /* Determine initial transfer parameters */ |
813 | sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK; | |
814 | if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK) | |
815 | dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr); | |
816 | else | |
817 | dsize = size; | |
5b435de0 | 818 | |
ba540b01 FL |
819 | sdio_claim_host(sdiodev->func[1]); |
820 | ||
821 | /* Do the transfer(s) */ | |
822 | while (size) { | |
823 | /* Set the backplane window to include the start address */ | |
a39be27b | 824 | bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address); |
ba540b01 FL |
825 | if (bcmerror) |
826 | break; | |
827 | ||
828 | brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n", | |
829 | write ? "write" : "read", dsize, | |
830 | sdaddr, address & SBSDIO_SBWINDOW_MASK); | |
831 | ||
832 | sdaddr &= SBSDIO_SB_OFT_ADDR_MASK; | |
833 | sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
834 | ||
835 | skb_put(pkt, dsize); | |
836 | if (write) | |
837 | memcpy(pkt->data, data, dsize); | |
a39be27b AS |
838 | bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write, |
839 | sdaddr, pkt); | |
ba540b01 FL |
840 | if (bcmerror) { |
841 | brcmf_err("membytes transfer failed\n"); | |
842 | break; | |
843 | } | |
844 | if (!write) | |
845 | memcpy(data, pkt->data, dsize); | |
79c868e5 | 846 | skb_trim(pkt, 0); |
ba540b01 FL |
847 | |
848 | /* Adjust for next transfer (if any) */ | |
849 | size -= dsize; | |
850 | if (size) { | |
851 | data += dsize; | |
852 | address += dsize; | |
853 | sdaddr = 0; | |
854 | dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); | |
855 | } | |
4c6e869d AS |
856 | } |
857 | ||
ba540b01 | 858 | dev_kfree_skb(pkt); |
4c6e869d | 859 | |
ba540b01 | 860 | /* Return the window to backplane enumeration space for core access */ |
a39be27b | 861 | if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad)) |
ba540b01 FL |
862 | brcmf_err("FAILED to set window back to 0x%x\n", |
863 | sdiodev->sbwad); | |
4c6e869d | 864 | |
ba540b01 | 865 | sdio_release_host(sdiodev->func[1]); |
4c6e869d | 866 | |
ba540b01 | 867 | return bcmerror; |
5b435de0 AS |
868 | } |
869 | ||
a39be27b | 870 | int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn) |
5b435de0 AS |
871 | { |
872 | char t_func = (char)fn; | |
c3203374 | 873 | brcmf_dbg(SDIO, "Enter\n"); |
5b435de0 AS |
874 | |
875 | /* issue abort cmd52 command through F0 */ | |
71c60cf2 AS |
876 | brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT, |
877 | sizeof(t_func), &t_func, true); | |
5b435de0 | 878 | |
c3203374 | 879 | brcmf_dbg(SDIO, "Exit\n"); |
5b435de0 AS |
880 | return 0; |
881 | } | |
882 | ||
af1fa210 AS |
883 | static void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev) |
884 | { | |
885 | uint nents; | |
886 | int err; | |
887 | ||
888 | if (!sdiodev->sg_support) | |
889 | return; | |
890 | ||
891 | nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE, brcmf_sdiod_txglomsz); | |
892 | nents += (nents >> 4) + 1; | |
893 | ||
894 | WARN_ON(nents > sdiodev->max_segment_count); | |
895 | ||
896 | brcmf_dbg(TRACE, "nents=%d\n", nents); | |
897 | err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL); | |
898 | if (err < 0) { | |
899 | brcmf_err("allocation failed: disable scatter-gather"); | |
900 | sdiodev->sg_support = false; | |
901 | } | |
902 | ||
903 | sdiodev->txglomsz = brcmf_sdiod_txglomsz; | |
904 | } | |
905 | ||
99824643 AS |
906 | #ifdef CONFIG_PM_SLEEP |
907 | static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev) | |
908 | { | |
909 | sdiodev->freezer = kzalloc(sizeof(*sdiodev->freezer), GFP_KERNEL); | |
910 | if (!sdiodev->freezer) | |
911 | return -ENOMEM; | |
912 | atomic_set(&sdiodev->freezer->thread_count, 0); | |
913 | atomic_set(&sdiodev->freezer->freezing, 0); | |
914 | init_waitqueue_head(&sdiodev->freezer->thread_freeze); | |
915 | init_completion(&sdiodev->freezer->resumed); | |
916 | return 0; | |
917 | } | |
918 | ||
919 | static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev) | |
920 | { | |
921 | if (sdiodev->freezer) { | |
922 | WARN_ON(atomic_read(&sdiodev->freezer->freezing)); | |
923 | kfree(sdiodev->freezer); | |
924 | } | |
925 | } | |
926 | ||
927 | static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev *sdiodev) | |
928 | { | |
929 | atomic_t *expect = &sdiodev->freezer->thread_count; | |
930 | int res = 0; | |
931 | ||
932 | sdiodev->freezer->frozen_count = 0; | |
933 | reinit_completion(&sdiodev->freezer->resumed); | |
934 | atomic_set(&sdiodev->freezer->freezing, 1); | |
935 | brcmf_sdio_trigger_dpc(sdiodev->bus); | |
936 | wait_event(sdiodev->freezer->thread_freeze, | |
937 | atomic_read(expect) == sdiodev->freezer->frozen_count); | |
938 | sdio_claim_host(sdiodev->func[1]); | |
939 | res = brcmf_sdio_sleep(sdiodev->bus, true); | |
940 | sdio_release_host(sdiodev->func[1]); | |
941 | return res; | |
942 | } | |
943 | ||
944 | static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev *sdiodev) | |
945 | { | |
946 | sdio_claim_host(sdiodev->func[1]); | |
947 | brcmf_sdio_sleep(sdiodev->bus, false); | |
948 | sdio_release_host(sdiodev->func[1]); | |
949 | atomic_set(&sdiodev->freezer->freezing, 0); | |
950 | complete_all(&sdiodev->freezer->resumed); | |
951 | } | |
952 | ||
953 | bool brcmf_sdiod_freezing(struct brcmf_sdio_dev *sdiodev) | |
954 | { | |
955 | return atomic_read(&sdiodev->freezer->freezing); | |
956 | } | |
957 | ||
958 | void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev *sdiodev) | |
959 | { | |
960 | if (!brcmf_sdiod_freezing(sdiodev)) | |
961 | return; | |
962 | sdiodev->freezer->frozen_count++; | |
963 | wake_up(&sdiodev->freezer->thread_freeze); | |
964 | wait_for_completion(&sdiodev->freezer->resumed); | |
965 | } | |
966 | ||
967 | void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev *sdiodev) | |
968 | { | |
969 | atomic_inc(&sdiodev->freezer->thread_count); | |
970 | } | |
971 | ||
972 | void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev *sdiodev) | |
973 | { | |
974 | atomic_dec(&sdiodev->freezer->thread_count); | |
975 | } | |
976 | #else | |
977 | static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev) | |
978 | { | |
979 | return 0; | |
980 | } | |
981 | ||
982 | static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev) | |
983 | { | |
984 | } | |
985 | #endif /* CONFIG_PM_SLEEP */ | |
986 | ||
a39be27b AS |
987 | static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev) |
988 | { | |
a39be27b | 989 | if (sdiodev->bus) { |
9fbe2a6d | 990 | brcmf_sdio_remove(sdiodev->bus); |
a39be27b AS |
991 | sdiodev->bus = NULL; |
992 | } | |
993 | ||
99824643 AS |
994 | brcmf_sdiod_freezer_detach(sdiodev); |
995 | ||
a39be27b AS |
996 | /* Disable Function 2 */ |
997 | sdio_claim_host(sdiodev->func[2]); | |
998 | sdio_disable_func(sdiodev->func[2]); | |
999 | sdio_release_host(sdiodev->func[2]); | |
1000 | ||
1001 | /* Disable Function 1 */ | |
1002 | sdio_claim_host(sdiodev->func[1]); | |
1003 | sdio_disable_func(sdiodev->func[1]); | |
1004 | sdio_release_host(sdiodev->func[1]); | |
1005 | ||
af1fa210 | 1006 | sg_free_table(&sdiodev->sgtable); |
a39be27b AS |
1007 | sdiodev->sbwad = 0; |
1008 | ||
1009 | return 0; | |
1010 | } | |
1011 | ||
1012 | static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev) | |
e2dc9eea | 1013 | { |
e2dc9eea | 1014 | struct sdio_func *func; |
a39be27b | 1015 | struct mmc_host *host; |
e2dc9eea | 1016 | uint max_blocks; |
a39be27b | 1017 | int ret = 0; |
e2dc9eea AS |
1018 | |
1019 | sdiodev->num_funcs = 2; | |
1020 | ||
1021 | sdio_claim_host(sdiodev->func[1]); | |
1022 | ||
a39be27b AS |
1023 | ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE); |
1024 | if (ret) { | |
e2dc9eea | 1025 | brcmf_err("Failed to set F1 blocksize\n"); |
a39be27b | 1026 | sdio_release_host(sdiodev->func[1]); |
e2dc9eea AS |
1027 | goto out; |
1028 | } | |
a39be27b AS |
1029 | ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE); |
1030 | if (ret) { | |
e2dc9eea | 1031 | brcmf_err("Failed to set F2 blocksize\n"); |
a39be27b | 1032 | sdio_release_host(sdiodev->func[1]); |
e2dc9eea AS |
1033 | goto out; |
1034 | } | |
1035 | ||
71370eb8 AS |
1036 | /* increase F2 timeout */ |
1037 | sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY; | |
1038 | ||
463c30b3 | 1039 | /* Enable Function 1 */ |
a39be27b AS |
1040 | ret = sdio_enable_func(sdiodev->func[1]); |
1041 | sdio_release_host(sdiodev->func[1]); | |
1042 | if (ret) { | |
1043 | brcmf_err("Failed to enable F1: err=%d\n", ret); | |
463c30b3 AS |
1044 | goto out; |
1045 | } | |
e2dc9eea AS |
1046 | |
1047 | /* | |
a39be27b | 1048 | * determine host related variables after brcmf_sdiod_probe() |
e2dc9eea AS |
1049 | * as func->cur_blksize is properly set and F2 init has been |
1050 | * completed successfully. | |
1051 | */ | |
1052 | func = sdiodev->func[2]; | |
1053 | host = func->card->host; | |
1054 | sdiodev->sg_support = host->max_segs > 1; | |
1055 | max_blocks = min_t(uint, host->max_blk_count, 511u); | |
1056 | sdiodev->max_request_size = min_t(uint, host->max_req_size, | |
1057 | max_blocks * func->cur_blksize); | |
1058 | sdiodev->max_segment_count = min_t(uint, host->max_segs, | |
1059 | SG_MAX_SINGLE_ALLOC); | |
1060 | sdiodev->max_segment_size = host->max_seg_size; | |
e49b06ba | 1061 | |
af1fa210 AS |
1062 | /* allocate scatter-gather table. sg support |
1063 | * will be disabled upon allocation failure. | |
1064 | */ | |
1065 | brcmf_sdiod_sgtable_alloc(sdiodev); | |
1066 | ||
99824643 AS |
1067 | ret = brcmf_sdiod_freezer_attach(sdiodev); |
1068 | if (ret) | |
1069 | goto out; | |
1070 | ||
e49b06ba | 1071 | /* try to attach to the target device */ |
82d7f3c1 | 1072 | sdiodev->bus = brcmf_sdio_probe(sdiodev); |
e49b06ba | 1073 | if (!sdiodev->bus) { |
e49b06ba AS |
1074 | ret = -ENODEV; |
1075 | goto out; | |
1076 | } | |
1077 | ||
1078 | out: | |
1079 | if (ret) | |
a39be27b | 1080 | brcmf_sdiod_remove(sdiodev); |
e49b06ba AS |
1081 | |
1082 | return ret; | |
1083 | } | |
1084 | ||
5779ae6a | 1085 | #define BRCMF_SDIO_DEVICE(dev_id) \ |
8bd61f8d | 1086 | {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)} |
5779ae6a | 1087 | |
e49b06ba AS |
1088 | /* devices we support, null terminated */ |
1089 | static const struct sdio_device_id brcmf_sdmmc_ids[] = { | |
8bd61f8d AS |
1090 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143), |
1091 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241), | |
1092 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329), | |
1093 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330), | |
1094 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334), | |
1095 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340), | |
1096 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341), | |
1097 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362), | |
1098 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339), | |
1099 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354), | |
5779ae6a | 1100 | { /* end: all zeroes */ } |
e49b06ba AS |
1101 | }; |
1102 | MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids); | |
1103 | ||
1104 | static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata; | |
1105 | ||
1106 | ||
e2dc9eea AS |
1107 | static int brcmf_ops_sdio_probe(struct sdio_func *func, |
1108 | const struct sdio_device_id *id) | |
1109 | { | |
1110 | int err; | |
1111 | struct brcmf_sdio_dev *sdiodev; | |
1112 | struct brcmf_bus *bus_if; | |
1113 | ||
1114 | brcmf_dbg(SDIO, "Enter\n"); | |
1115 | brcmf_dbg(SDIO, "Class=%x\n", func->class); | |
1116 | brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); | |
1117 | brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); | |
1118 | brcmf_dbg(SDIO, "Function#: %d\n", func->num); | |
1119 | ||
1120 | /* Consume func num 1 but dont do anything with it. */ | |
1121 | if (func->num == 1) | |
1122 | return 0; | |
1123 | ||
1124 | /* Ignore anything but func 2 */ | |
1125 | if (func->num != 2) | |
1126 | return -ENODEV; | |
1127 | ||
1128 | bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL); | |
1129 | if (!bus_if) | |
1130 | return -ENOMEM; | |
1131 | sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL); | |
1132 | if (!sdiodev) { | |
1133 | kfree(bus_if); | |
1134 | return -ENOMEM; | |
1135 | } | |
1136 | ||
36c4e7e4 AS |
1137 | /* store refs to functions used. mmc_card does |
1138 | * not hold the F0 function pointer. | |
1139 | */ | |
1140 | sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL); | |
1141 | sdiodev->func[0]->num = 0; | |
e2dc9eea AS |
1142 | sdiodev->func[1] = func->card->sdio_func[0]; |
1143 | sdiodev->func[2] = func; | |
1144 | ||
1145 | sdiodev->bus_if = bus_if; | |
1146 | bus_if->bus_priv.sdio = sdiodev; | |
943258b6 | 1147 | bus_if->proto_type = BRCMF_PROTO_BCDC; |
e2dc9eea AS |
1148 | dev_set_drvdata(&func->dev, bus_if); |
1149 | dev_set_drvdata(&sdiodev->func[1]->dev, bus_if); | |
1150 | sdiodev->dev = &sdiodev->func[1]->dev; | |
1151 | sdiodev->pdata = brcmfmac_sdio_pdata; | |
1152 | ||
61f663df CYT |
1153 | if (!sdiodev->pdata) |
1154 | brcmf_of_probe(sdiodev); | |
1155 | ||
330b4e4b HM |
1156 | #ifdef CONFIG_PM_SLEEP |
1157 | /* wowl can be supported when KEEP_POWER is true and (WAKE_SDIO_IRQ | |
1158 | * is true or when platform data OOB irq is true). | |
1159 | */ | |
1160 | if ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_KEEP_POWER) && | |
1161 | ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_WAKE_SDIO_IRQ) || | |
8975842b | 1162 | (sdiodev->pdata && sdiodev->pdata->oob_irq_supported))) |
330b4e4b HM |
1163 | bus_if->wowl_supported = true; |
1164 | #endif | |
1165 | ||
a1ce7a0d | 1166 | brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN); |
e2dc9eea | 1167 | |
a39be27b AS |
1168 | brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n"); |
1169 | err = brcmf_sdiod_probe(sdiodev); | |
e2dc9eea AS |
1170 | if (err) { |
1171 | brcmf_err("F2 error, probe failed %d...\n", err); | |
1172 | goto fail; | |
1173 | } | |
1174 | ||
1175 | brcmf_dbg(SDIO, "F2 init completed...\n"); | |
1176 | return 0; | |
1177 | ||
1178 | fail: | |
1179 | dev_set_drvdata(&func->dev, NULL); | |
1180 | dev_set_drvdata(&sdiodev->func[1]->dev, NULL); | |
36c4e7e4 | 1181 | kfree(sdiodev->func[0]); |
e2dc9eea AS |
1182 | kfree(sdiodev); |
1183 | kfree(bus_if); | |
1184 | return err; | |
1185 | } | |
1186 | ||
1187 | static void brcmf_ops_sdio_remove(struct sdio_func *func) | |
1188 | { | |
1189 | struct brcmf_bus *bus_if; | |
1190 | struct brcmf_sdio_dev *sdiodev; | |
1191 | ||
1192 | brcmf_dbg(SDIO, "Enter\n"); | |
1193 | brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); | |
1194 | brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); | |
1195 | brcmf_dbg(SDIO, "Function: %d\n", func->num); | |
1196 | ||
de6878c8 | 1197 | if (func->num != 1) |
e2dc9eea AS |
1198 | return; |
1199 | ||
1200 | bus_if = dev_get_drvdata(&func->dev); | |
1201 | if (bus_if) { | |
1202 | sdiodev = bus_if->bus_priv.sdio; | |
a39be27b | 1203 | brcmf_sdiod_remove(sdiodev); |
e2dc9eea AS |
1204 | |
1205 | dev_set_drvdata(&sdiodev->func[1]->dev, NULL); | |
1206 | dev_set_drvdata(&sdiodev->func[2]->dev, NULL); | |
1207 | ||
1208 | kfree(bus_if); | |
36c4e7e4 | 1209 | kfree(sdiodev->func[0]); |
e2dc9eea AS |
1210 | kfree(sdiodev); |
1211 | } | |
1212 | ||
1213 | brcmf_dbg(SDIO, "Exit\n"); | |
1214 | } | |
1215 | ||
330b4e4b HM |
1216 | void brcmf_sdio_wowl_config(struct device *dev, bool enabled) |
1217 | { | |
1218 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); | |
1219 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
1220 | ||
1221 | brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled); | |
1222 | sdiodev->wowl_enabled = enabled; | |
1223 | } | |
1224 | ||
e2dc9eea | 1225 | #ifdef CONFIG_PM_SLEEP |
a39be27b | 1226 | static int brcmf_ops_sdio_suspend(struct device *dev) |
e2dc9eea | 1227 | { |
99824643 | 1228 | struct sdio_func *func; |
8982cd40 AS |
1229 | struct brcmf_bus *bus_if; |
1230 | struct brcmf_sdio_dev *sdiodev; | |
330b4e4b | 1231 | mmc_pm_flag_t sdio_flags; |
e2dc9eea | 1232 | |
99824643 AS |
1233 | func = container_of(dev, struct sdio_func, dev); |
1234 | brcmf_dbg(SDIO, "Enter: F%d\n", func->num); | |
1235 | if (func->num != SDIO_FUNC_1) | |
1236 | return 0; | |
1237 | ||
e2dc9eea | 1238 | |
8982cd40 AS |
1239 | bus_if = dev_get_drvdata(dev); |
1240 | sdiodev = bus_if->bus_priv.sdio; | |
1241 | ||
99824643 | 1242 | brcmf_sdiod_freezer_on(sdiodev); |
8982cd40 | 1243 | brcmf_sdio_wd_timer(sdiodev->bus, 0); |
3e3831c4 | 1244 | |
330b4e4b HM |
1245 | if (sdiodev->wowl_enabled) { |
1246 | sdio_flags = MMC_PM_KEEP_POWER; | |
1247 | if (sdiodev->pdata->oob_irq_supported) | |
1248 | enable_irq_wake(sdiodev->pdata->oob_irq_nr); | |
1249 | else | |
1250 | sdio_flags = MMC_PM_WAKE_SDIO_IRQ; | |
1251 | if (sdio_set_host_pm_flags(sdiodev->func[1], sdio_flags)) | |
1252 | brcmf_err("Failed to set pm_flags %x\n", sdio_flags); | |
e2dc9eea | 1253 | } |
330b4e4b | 1254 | return 0; |
e2dc9eea AS |
1255 | } |
1256 | ||
a39be27b | 1257 | static int brcmf_ops_sdio_resume(struct device *dev) |
e2dc9eea AS |
1258 | { |
1259 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); | |
1260 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
99824643 | 1261 | struct sdio_func *func = container_of(dev, struct sdio_func, dev); |
e2dc9eea | 1262 | |
99824643 AS |
1263 | brcmf_dbg(SDIO, "Enter: F%d\n", func->num); |
1264 | if (func->num != SDIO_FUNC_2) | |
1265 | return 0; | |
1266 | ||
1267 | brcmf_sdiod_freezer_off(sdiodev); | |
e2dc9eea AS |
1268 | return 0; |
1269 | } | |
1270 | ||
1271 | static const struct dev_pm_ops brcmf_sdio_pm_ops = { | |
a39be27b AS |
1272 | .suspend = brcmf_ops_sdio_suspend, |
1273 | .resume = brcmf_ops_sdio_resume, | |
e2dc9eea AS |
1274 | }; |
1275 | #endif /* CONFIG_PM_SLEEP */ | |
1276 | ||
1277 | static struct sdio_driver brcmf_sdmmc_driver = { | |
1278 | .probe = brcmf_ops_sdio_probe, | |
1279 | .remove = brcmf_ops_sdio_remove, | |
1280 | .name = BRCMFMAC_SDIO_PDATA_NAME, | |
1281 | .id_table = brcmf_sdmmc_ids, | |
e2dc9eea | 1282 | .drv = { |
0b0acd8c FL |
1283 | .owner = THIS_MODULE, |
1284 | #ifdef CONFIG_PM_SLEEP | |
e2dc9eea | 1285 | .pm = &brcmf_sdio_pm_ops, |
e2dc9eea | 1286 | #endif /* CONFIG_PM_SLEEP */ |
0b0acd8c | 1287 | }, |
e2dc9eea AS |
1288 | }; |
1289 | ||
c2d23c70 | 1290 | static int __init brcmf_sdio_pd_probe(struct platform_device *pdev) |
e2dc9eea AS |
1291 | { |
1292 | brcmf_dbg(SDIO, "Enter\n"); | |
1293 | ||
1294 | brcmfmac_sdio_pdata = dev_get_platdata(&pdev->dev); | |
1295 | ||
1296 | if (brcmfmac_sdio_pdata->power_on) | |
1297 | brcmfmac_sdio_pdata->power_on(); | |
1298 | ||
1299 | return 0; | |
1300 | } | |
1301 | ||
1302 | static int brcmf_sdio_pd_remove(struct platform_device *pdev) | |
1303 | { | |
1304 | brcmf_dbg(SDIO, "Enter\n"); | |
1305 | ||
1306 | if (brcmfmac_sdio_pdata->power_off) | |
1307 | brcmfmac_sdio_pdata->power_off(); | |
1308 | ||
1309 | sdio_unregister_driver(&brcmf_sdmmc_driver); | |
1310 | ||
1311 | return 0; | |
1312 | } | |
1313 | ||
1314 | static struct platform_driver brcmf_sdio_pd = { | |
1315 | .remove = brcmf_sdio_pd_remove, | |
1316 | .driver = { | |
1317 | .name = BRCMFMAC_SDIO_PDATA_NAME, | |
e2dc9eea AS |
1318 | } |
1319 | }; | |
1320 | ||
1321 | void brcmf_sdio_register(void) | |
1322 | { | |
1323 | int ret; | |
1324 | ||
1325 | ret = sdio_register_driver(&brcmf_sdmmc_driver); | |
1326 | if (ret) | |
1327 | brcmf_err("sdio_register_driver failed: %d\n", ret); | |
1328 | } | |
1329 | ||
1330 | void brcmf_sdio_exit(void) | |
1331 | { | |
1332 | brcmf_dbg(SDIO, "Enter\n"); | |
1333 | ||
1334 | if (brcmfmac_sdio_pdata) | |
1335 | platform_driver_unregister(&brcmf_sdio_pd); | |
1336 | else | |
1337 | sdio_unregister_driver(&brcmf_sdmmc_driver); | |
1338 | } | |
1339 | ||
1340 | void __init brcmf_sdio_init(void) | |
1341 | { | |
1342 | int ret; | |
1343 | ||
1344 | brcmf_dbg(SDIO, "Enter\n"); | |
1345 | ||
1346 | ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe); | |
1347 | if (ret == -ENODEV) | |
1348 | brcmf_dbg(SDIO, "No platform data available.\n"); | |
1349 | } |