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 | 29 | #include <linux/mmc/host.h> |
063d5177 | 30 | #include <linux/pm_runtime.h> |
e2dc9eea AS |
31 | #include <linux/suspend.h> |
32 | #include <linux/errno.h> | |
33 | #include <linux/module.h> | |
f0992ace | 34 | #include <linux/acpi.h> |
e2dc9eea | 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" |
7d34b056 HM |
47 | #include "core.h" |
48 | #include "common.h" | |
5b435de0 AS |
49 | |
50 | #define SDIOH_API_ACCESS_RETRY_LIMIT 2 | |
51 | ||
e49b06ba AS |
52 | #define DMA_ALIGN_MASK 0x03 |
53 | ||
54 | #define SDIO_FUNC1_BLOCKSIZE 64 | |
55 | #define SDIO_FUNC2_BLOCKSIZE 512 | |
71370eb8 AS |
56 | /* Maximum milliseconds to wait for F2 to come up */ |
57 | #define SDIO_WAIT_F2RDY 3000 | |
58 | ||
af1fa210 AS |
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 | ||
a39be27b | 69 | static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id) |
ba89bf19 | 70 | { |
5b3c1832 HM |
71 | struct brcmf_bus *bus_if = dev_get_drvdata(dev_id); |
72 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
ba89bf19 | 73 | |
668761ac | 74 | brcmf_dbg(INTR, "OOB intr triggered\n"); |
ba89bf19 | 75 | |
668761ac | 76 | /* out-of-band interrupt is level-triggered which won't |
ba89bf19 FL |
77 | * be cleared until dpc |
78 | */ | |
79 | if (sdiodev->irq_en) { | |
80 | disable_irq_nosync(irq); | |
81 | sdiodev->irq_en = false; | |
82 | } | |
83 | ||
82d7f3c1 | 84 | brcmf_sdio_isr(sdiodev->bus); |
ba89bf19 FL |
85 | |
86 | return IRQ_HANDLED; | |
87 | } | |
88 | ||
a39be27b | 89 | static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func) |
5b435de0 | 90 | { |
5b3c1832 HM |
91 | struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev); |
92 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
5b435de0 | 93 | |
668761ac | 94 | brcmf_dbg(INTR, "IB intr triggered\n"); |
5b435de0 | 95 | |
82d7f3c1 | 96 | brcmf_sdio_isr(sdiodev->bus); |
5b435de0 AS |
97 | } |
98 | ||
fbf59108 | 99 | /* dummy handler for SDIO function 2 interrupt */ |
a39be27b | 100 | static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func) |
fbf59108 FL |
101 | { |
102 | } | |
103 | ||
a39be27b | 104 | int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev) |
5b435de0 | 105 | { |
4d792895 | 106 | struct brcmfmac_sdio_pd *pdata; |
668761ac HM |
107 | int ret = 0; |
108 | u8 data; | |
568ba389 | 109 | u32 addr, gpiocontrol; |
668761ac | 110 | unsigned long flags; |
5b435de0 | 111 | |
af5b5e62 HM |
112 | pdata = &sdiodev->settings->bus.sdio; |
113 | if (pdata->oob_irq_supported) { | |
668761ac | 114 | brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n", |
8ea56be0 HM |
115 | pdata->oob_irq_nr); |
116 | ret = request_irq(pdata->oob_irq_nr, brcmf_sdiod_oob_irqhandler, | |
117 | pdata->oob_irq_flags, "brcmf_oob_intr", | |
668761ac HM |
118 | &sdiodev->func[1]->dev); |
119 | if (ret != 0) { | |
120 | brcmf_err("request_irq failed %d\n", ret); | |
121 | return ret; | |
122 | } | |
123 | sdiodev->oob_irq_requested = true; | |
124 | spin_lock_init(&sdiodev->irq_en_lock); | |
125 | spin_lock_irqsave(&sdiodev->irq_en_lock, flags); | |
126 | sdiodev->irq_en = true; | |
127 | spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags); | |
128 | ||
8ea56be0 | 129 | ret = enable_irq_wake(pdata->oob_irq_nr); |
668761ac HM |
130 | if (ret != 0) { |
131 | brcmf_err("enable_irq_wake failed %d\n", ret); | |
132 | return ret; | |
133 | } | |
134 | sdiodev->irq_wake = true; | |
135 | ||
136 | sdio_claim_host(sdiodev->func[1]); | |
137 | ||
568ba389 HG |
138 | if (sdiodev->bus_if->chip == BRCM_CC_43362_CHIP_ID) { |
139 | /* assign GPIO to SDIO core */ | |
140 | addr = CORE_CC_REG(SI_ENUM_BASE, gpiocontrol); | |
141 | gpiocontrol = brcmf_sdiod_regrl(sdiodev, addr, &ret); | |
142 | gpiocontrol |= 0x2; | |
143 | brcmf_sdiod_regwl(sdiodev, addr, gpiocontrol, &ret); | |
144 | ||
145 | brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_SELECT, 0xf, | |
146 | &ret); | |
147 | brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_OUT, 0, &ret); | |
148 | brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_EN, 0x2, &ret); | |
149 | } | |
150 | ||
668761ac | 151 | /* must configure SDIO_CCCR_IENx to enable irq */ |
a39be27b | 152 | data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret); |
668761ac | 153 | data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1; |
a39be27b | 154 | brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret); |
668761ac HM |
155 | |
156 | /* redirect, configure and enable io for interrupt signal */ | |
157 | data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE; | |
8ea56be0 | 158 | if (pdata->oob_irq_flags & IRQF_TRIGGER_HIGH) |
668761ac | 159 | data |= SDIO_SEPINT_ACT_HI; |
a39be27b | 160 | brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret); |
668761ac HM |
161 | |
162 | sdio_release_host(sdiodev->func[1]); | |
163 | } else { | |
164 | brcmf_dbg(SDIO, "Entering\n"); | |
165 | sdio_claim_host(sdiodev->func[1]); | |
a39be27b AS |
166 | sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler); |
167 | sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler); | |
668761ac | 168 | sdio_release_host(sdiodev->func[1]); |
b88a2e80 | 169 | sdiodev->sd_irq_requested = true; |
668761ac | 170 | } |
5b435de0 AS |
171 | |
172 | return 0; | |
173 | } | |
174 | ||
a39be27b | 175 | int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev) |
5b435de0 | 176 | { |
8ea56be0 | 177 | |
b88a2e80 CD |
178 | brcmf_dbg(SDIO, "Entering oob=%d sd=%d\n", |
179 | sdiodev->oob_irq_requested, | |
180 | sdiodev->sd_irq_requested); | |
5b435de0 | 181 | |
b88a2e80 CD |
182 | if (sdiodev->oob_irq_requested) { |
183 | struct brcmfmac_sdio_pd *pdata; | |
184 | ||
185 | pdata = &sdiodev->settings->bus.sdio; | |
668761ac | 186 | sdio_claim_host(sdiodev->func[1]); |
a39be27b AS |
187 | brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL); |
188 | brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL); | |
668761ac HM |
189 | sdio_release_host(sdiodev->func[1]); |
190 | ||
b88a2e80 CD |
191 | sdiodev->oob_irq_requested = false; |
192 | if (sdiodev->irq_wake) { | |
193 | disable_irq_wake(pdata->oob_irq_nr); | |
194 | sdiodev->irq_wake = false; | |
668761ac | 195 | } |
b88a2e80 CD |
196 | free_irq(pdata->oob_irq_nr, &sdiodev->func[1]->dev); |
197 | sdiodev->irq_en = false; | |
198 | } | |
199 | ||
200 | if (sdiodev->sd_irq_requested) { | |
668761ac HM |
201 | sdio_claim_host(sdiodev->func[1]); |
202 | sdio_release_irq(sdiodev->func[2]); | |
203 | sdio_release_irq(sdiodev->func[1]); | |
204 | sdio_release_host(sdiodev->func[1]); | |
205 | } | |
5b435de0 AS |
206 | |
207 | return 0; | |
208 | } | |
209 | ||
a1ce7a0d AS |
210 | void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev, |
211 | enum brcmf_sdiod_state state) | |
212 | { | |
213 | if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM || | |
214 | state == sdiodev->state) | |
215 | return; | |
216 | ||
217 | brcmf_dbg(TRACE, "%d -> %d\n", sdiodev->state, state); | |
218 | switch (sdiodev->state) { | |
219 | case BRCMF_SDIOD_DATA: | |
220 | /* any other state means bus interface is down */ | |
221 | brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN); | |
222 | break; | |
223 | case BRCMF_SDIOD_DOWN: | |
224 | /* transition from DOWN to DATA means bus interface is up */ | |
225 | if (state == BRCMF_SDIOD_DATA) | |
226 | brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_UP); | |
227 | break; | |
228 | default: | |
229 | break; | |
230 | } | |
231 | sdiodev->state = state; | |
232 | } | |
233 | ||
36c4e7e4 AS |
234 | static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func, |
235 | uint regaddr, u8 byte) | |
e49b06ba | 236 | { |
e49b06ba AS |
237 | int err_ret; |
238 | ||
239 | /* | |
240 | * Can only directly write to some F0 registers. | |
36c4e7e4 | 241 | * Handle CCCR_IENx and CCCR_ABORT command |
e49b06ba AS |
242 | * as a special case. |
243 | */ | |
71370eb8 | 244 | if ((regaddr == SDIO_CCCR_ABORT) || |
36c4e7e4 AS |
245 | (regaddr == SDIO_CCCR_IENx)) |
246 | sdio_writeb(func, byte, regaddr, &err_ret); | |
247 | else | |
248 | sdio_f0_writeb(func, byte, regaddr, &err_ret); | |
e49b06ba AS |
249 | |
250 | return err_ret; | |
251 | } | |
252 | ||
71c60cf2 AS |
253 | static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn, |
254 | u32 addr, u8 regsz, void *data, bool write) | |
e49b06ba | 255 | { |
71c60cf2 | 256 | struct sdio_func *func; |
977bc523 | 257 | int ret = -EINVAL; |
e49b06ba | 258 | |
71c60cf2 AS |
259 | brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n", |
260 | write, fn, addr, regsz); | |
e49b06ba | 261 | |
71c60cf2 AS |
262 | /* only allow byte access on F0 */ |
263 | if (WARN_ON(regsz > 1 && !fn)) | |
264 | return -EINVAL; | |
265 | func = sdiodev->func[fn]; | |
266 | ||
267 | switch (regsz) { | |
268 | case sizeof(u8): | |
269 | if (write) { | |
270 | if (fn) | |
271 | sdio_writeb(func, *(u8 *)data, addr, &ret); | |
272 | else | |
273 | ret = brcmf_sdiod_f0_writeb(func, addr, | |
274 | *(u8 *)data); | |
e49b06ba | 275 | } else { |
71c60cf2 AS |
276 | if (fn) |
277 | *(u8 *)data = sdio_readb(func, addr, &ret); | |
278 | else | |
279 | *(u8 *)data = sdio_f0_readb(func, addr, &ret); | |
e49b06ba | 280 | } |
71c60cf2 AS |
281 | break; |
282 | case sizeof(u16): | |
283 | if (write) | |
284 | sdio_writew(func, *(u16 *)data, addr, &ret); | |
285 | else | |
286 | *(u16 *)data = sdio_readw(func, addr, &ret); | |
287 | break; | |
288 | case sizeof(u32): | |
289 | if (write) | |
290 | sdio_writel(func, *(u32 *)data, addr, &ret); | |
291 | else | |
292 | *(u32 *)data = sdio_readl(func, addr, &ret); | |
293 | break; | |
294 | default: | |
295 | brcmf_err("invalid size: %d\n", regsz); | |
296 | break; | |
e49b06ba AS |
297 | } |
298 | ||
4d1a4f16 AS |
299 | if (ret) |
300 | brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n", | |
301 | write ? "write" : "read", fn, addr, ret); | |
302 | ||
71c60cf2 | 303 | return ret; |
e49b06ba AS |
304 | } |
305 | ||
71c60cf2 AS |
306 | static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr, |
307 | u8 regsz, void *data, bool write) | |
e49b06ba | 308 | { |
4d1a4f16 | 309 | u8 func; |
71c60cf2 AS |
310 | s32 retry = 0; |
311 | int ret; | |
e49b06ba | 312 | |
a1ce7a0d | 313 | if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM) |
bb350711 AS |
314 | return -ENOMEDIUM; |
315 | ||
71c60cf2 AS |
316 | /* |
317 | * figure out how to read the register based on address range | |
318 | * 0x00 ~ 0x7FF: function 0 CCCR and FBR | |
319 | * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers | |
320 | * The rest: function 1 silicon backplane core registers | |
321 | */ | |
322 | if ((addr & ~REG_F0_REG_MASK) == 0) | |
4d1a4f16 | 323 | func = SDIO_FUNC_0; |
71c60cf2 | 324 | else |
4d1a4f16 | 325 | func = SDIO_FUNC_1; |
e49b06ba | 326 | |
71c60cf2 AS |
327 | do { |
328 | if (!write) | |
329 | memset(data, 0, regsz); | |
330 | /* for retry wait for 1 ms till bus get settled down */ | |
331 | if (retry) | |
332 | usleep_range(1000, 2000); | |
4d1a4f16 | 333 | ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz, |
71c60cf2 | 334 | data, write); |
bb350711 AS |
335 | } while (ret != 0 && ret != -ENOMEDIUM && |
336 | retry++ < SDIOH_API_ACCESS_RETRY_LIMIT); | |
e49b06ba | 337 | |
bb350711 | 338 | if (ret == -ENOMEDIUM) |
a1ce7a0d | 339 | brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); |
4d1a4f16 AS |
340 | else if (ret != 0) { |
341 | /* | |
342 | * SleepCSR register access can fail when | |
343 | * waking up the device so reduce this noise | |
344 | * in the logs. | |
345 | */ | |
346 | if (addr != SBSDIO_FUNC1_SLEEPCSR) | |
347 | brcmf_err("failed to %s data F%d@0x%05x, err: %d\n", | |
348 | write ? "write" : "read", func, addr, ret); | |
349 | else | |
350 | brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n", | |
351 | write ? "write" : "read", func, addr, ret); | |
352 | } | |
71c60cf2 | 353 | return ret; |
e49b06ba AS |
354 | } |
355 | ||
356bae6f | 356 | static int |
a39be27b | 357 | brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address) |
5b435de0 | 358 | { |
7d9cfc28 FL |
359 | int err = 0, i; |
360 | u8 addr[3]; | |
7d9cfc28 | 361 | |
a1ce7a0d | 362 | if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM) |
bb350711 AS |
363 | return -ENOMEDIUM; |
364 | ||
7d9cfc28 FL |
365 | addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK; |
366 | addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK; | |
367 | addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK; | |
368 | ||
369 | for (i = 0; i < 3; i++) { | |
71c60cf2 AS |
370 | err = brcmf_sdiod_regrw_helper(sdiodev, |
371 | SBSDIO_FUNC1_SBADDRLOW + i, | |
372 | sizeof(u8), &addr[i], true); | |
7d9cfc28 | 373 | if (err) { |
71c60cf2 | 374 | brcmf_err("failed at addr: 0x%0x\n", |
7d9cfc28 FL |
375 | SBSDIO_FUNC1_SBADDRLOW + i); |
376 | break; | |
377 | } | |
378 | } | |
5b435de0 AS |
379 | |
380 | return err; | |
381 | } | |
382 | ||
356bae6f | 383 | static int |
a39be27b | 384 | brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr) |
356bae6f FL |
385 | { |
386 | uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK; | |
387 | int err = 0; | |
388 | ||
389 | if (bar0 != sdiodev->sbwad) { | |
a39be27b | 390 | err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0); |
356bae6f FL |
391 | if (err) |
392 | return err; | |
393 | ||
394 | sdiodev->sbwad = bar0; | |
395 | } | |
396 | ||
397 | *addr &= SBSDIO_SB_OFT_ADDR_MASK; | |
398 | ||
399 | if (width == 4) | |
400 | *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
401 | ||
402 | return 0; | |
403 | } | |
404 | ||
a39be27b | 405 | u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) |
e9b8d91d FL |
406 | { |
407 | u8 data; | |
408 | int retval; | |
409 | ||
c3203374 | 410 | brcmf_dbg(SDIO, "addr:0x%08x\n", addr); |
71c60cf2 AS |
411 | retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, |
412 | false); | |
c3203374 | 413 | brcmf_dbg(SDIO, "data:0x%02x\n", data); |
e9b8d91d FL |
414 | |
415 | if (ret) | |
416 | *ret = retval; | |
417 | ||
418 | return data; | |
419 | } | |
420 | ||
a39be27b | 421 | u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) |
e9b8d91d FL |
422 | { |
423 | u32 data; | |
424 | int retval; | |
425 | ||
c3203374 | 426 | brcmf_dbg(SDIO, "addr:0x%08x\n", addr); |
71c60cf2 AS |
427 | retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr); |
428 | if (retval) | |
429 | goto done; | |
430 | retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, | |
431 | false); | |
c3203374 | 432 | brcmf_dbg(SDIO, "data:0x%08x\n", data); |
e9b8d91d | 433 | |
71c60cf2 | 434 | done: |
e9b8d91d FL |
435 | if (ret) |
436 | *ret = retval; | |
437 | ||
438 | return data; | |
439 | } | |
440 | ||
a39be27b | 441 | void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, |
e9b8d91d FL |
442 | u8 data, int *ret) |
443 | { | |
444 | int retval; | |
445 | ||
c3203374 | 446 | brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data); |
71c60cf2 AS |
447 | retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, |
448 | true); | |
e9b8d91d FL |
449 | if (ret) |
450 | *ret = retval; | |
451 | } | |
452 | ||
a39be27b | 453 | void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, |
e9b8d91d FL |
454 | u32 data, int *ret) |
455 | { | |
456 | int retval; | |
457 | ||
c3203374 | 458 | brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data); |
71c60cf2 AS |
459 | retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr); |
460 | if (retval) | |
461 | goto done; | |
462 | retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, | |
463 | true); | |
e9b8d91d | 464 | |
71c60cf2 | 465 | done: |
e9b8d91d FL |
466 | if (ret) |
467 | *ret = retval; | |
468 | } | |
469 | ||
a39be27b | 470 | static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn, |
4aef267e AS |
471 | bool write, u32 addr, struct sk_buff *pkt) |
472 | { | |
473 | unsigned int req_sz; | |
bb350711 | 474 | int err; |
4aef267e | 475 | |
4aef267e AS |
476 | /* Single skb use the standard mmc interface */ |
477 | req_sz = pkt->len + 3; | |
478 | req_sz &= (uint)~3; | |
479 | ||
480 | if (write) | |
bb350711 AS |
481 | err = sdio_memcpy_toio(sdiodev->func[fn], addr, |
482 | ((u8 *)(pkt->data)), req_sz); | |
4aef267e | 483 | else if (fn == 1) |
bb350711 AS |
484 | err = sdio_memcpy_fromio(sdiodev->func[fn], ((u8 *)(pkt->data)), |
485 | addr, req_sz); | |
4aef267e AS |
486 | else |
487 | /* function 2 read is FIFO operation */ | |
bb350711 AS |
488 | err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr, |
489 | req_sz); | |
490 | if (err == -ENOMEDIUM) | |
a1ce7a0d | 491 | brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); |
bb350711 | 492 | return err; |
4aef267e AS |
493 | } |
494 | ||
78b3f1c5 | 495 | /** |
a39be27b | 496 | * brcmf_sdiod_sglist_rw - SDIO interface function for block data access |
78b3f1c5 FL |
497 | * @sdiodev: brcmfmac sdio device |
498 | * @fn: SDIO function number | |
499 | * @write: direction flag | |
500 | * @addr: dongle memory address as source/destination | |
501 | * @pkt: skb pointer | |
502 | * | |
503 | * This function takes the respbonsibility as the interface function to MMC | |
504 | * stack for block data access. It assumes that the skb passed down by the | |
505 | * caller has already been padded and aligned. | |
506 | */ | |
a39be27b AS |
507 | static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn, |
508 | bool write, u32 addr, | |
509 | struct sk_buff_head *pktlist) | |
78b3f1c5 | 510 | { |
354b75bf | 511 | unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset; |
71201496 | 512 | unsigned int max_req_sz, orig_offset, dst_offset; |
3f782744 | 513 | unsigned short max_seg_cnt, seg_sz; |
3b81a680 FL |
514 | unsigned char *pkt_data, *orig_data, *dst_data; |
515 | struct sk_buff *pkt_next = NULL, *local_pkt_next; | |
516 | struct sk_buff_head local_list, *target_list; | |
354b75bf FL |
517 | struct mmc_request mmc_req; |
518 | struct mmc_command mmc_cmd; | |
519 | struct mmc_data mmc_dat; | |
354b75bf | 520 | struct scatterlist *sgl; |
354b75bf FL |
521 | int ret = 0; |
522 | ||
523 | if (!pktlist->qlen) | |
524 | return -EINVAL; | |
78b3f1c5 | 525 | |
3b81a680 FL |
526 | target_list = pktlist; |
527 | /* for host with broken sg support, prepare a page aligned list */ | |
528 | __skb_queue_head_init(&local_list); | |
af5b5e62 | 529 | if (!write && sdiodev->settings->bus.sdio.broken_sg_support) { |
3b81a680 FL |
530 | req_sz = 0; |
531 | skb_queue_walk(pktlist, pkt_next) | |
532 | req_sz += pkt_next->len; | |
533 | req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize); | |
534 | while (req_sz > PAGE_SIZE) { | |
535 | pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE); | |
536 | if (pkt_next == NULL) { | |
537 | ret = -ENOMEM; | |
538 | goto exit; | |
539 | } | |
540 | __skb_queue_tail(&local_list, pkt_next); | |
541 | req_sz -= PAGE_SIZE; | |
542 | } | |
543 | pkt_next = brcmu_pkt_buf_get_skb(req_sz); | |
544 | if (pkt_next == NULL) { | |
545 | ret = -ENOMEM; | |
546 | goto exit; | |
547 | } | |
548 | __skb_queue_tail(&local_list, pkt_next); | |
549 | target_list = &local_list; | |
550 | } | |
551 | ||
354b75bf | 552 | func_blk_sz = sdiodev->func[fn]->cur_blksize; |
71201496 AS |
553 | max_req_sz = sdiodev->max_request_size; |
554 | max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count, | |
555 | target_list->qlen); | |
3b81a680 | 556 | seg_sz = target_list->qlen; |
354b75bf | 557 | pkt_offset = 0; |
3b81a680 | 558 | pkt_next = target_list->next; |
354b75bf | 559 | |
7f9a8dc8 AS |
560 | memset(&mmc_req, 0, sizeof(struct mmc_request)); |
561 | memset(&mmc_cmd, 0, sizeof(struct mmc_command)); | |
562 | memset(&mmc_dat, 0, sizeof(struct mmc_data)); | |
563 | ||
af1fa210 | 564 | mmc_dat.sg = sdiodev->sgtable.sgl; |
7f9a8dc8 AS |
565 | mmc_dat.blksz = func_blk_sz; |
566 | mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; | |
567 | mmc_cmd.opcode = SD_IO_RW_EXTENDED; | |
568 | mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */ | |
569 | mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */ | |
570 | mmc_cmd.arg |= 1<<27; /* block mode */ | |
571 | /* for function 1 the addr will be incremented */ | |
572 | mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0; | |
573 | mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC; | |
574 | mmc_req.cmd = &mmc_cmd; | |
575 | mmc_req.data = &mmc_dat; | |
576 | ||
354b75bf FL |
577 | while (seg_sz) { |
578 | req_sz = 0; | |
579 | sg_cnt = 0; | |
af1fa210 | 580 | sgl = sdiodev->sgtable.sgl; |
354b75bf | 581 | /* prep sg table */ |
3b81a680 | 582 | while (pkt_next != (struct sk_buff *)target_list) { |
354b75bf FL |
583 | pkt_data = pkt_next->data + pkt_offset; |
584 | sg_data_sz = pkt_next->len - pkt_offset; | |
71201496 AS |
585 | if (sg_data_sz > sdiodev->max_segment_size) |
586 | sg_data_sz = sdiodev->max_segment_size; | |
354b75bf FL |
587 | if (sg_data_sz > max_req_sz - req_sz) |
588 | sg_data_sz = max_req_sz - req_sz; | |
589 | ||
590 | sg_set_buf(sgl, pkt_data, sg_data_sz); | |
591 | ||
592 | sg_cnt++; | |
593 | sgl = sg_next(sgl); | |
594 | req_sz += sg_data_sz; | |
595 | pkt_offset += sg_data_sz; | |
596 | if (pkt_offset == pkt_next->len) { | |
597 | pkt_offset = 0; | |
598 | pkt_next = pkt_next->next; | |
599 | } | |
600 | ||
3f782744 | 601 | if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt) |
354b75bf FL |
602 | break; |
603 | } | |
604 | seg_sz -= sg_cnt; | |
605 | ||
606 | if (req_sz % func_blk_sz != 0) { | |
607 | brcmf_err("sg request length %u is not %u aligned\n", | |
608 | req_sz, func_blk_sz); | |
3b81a680 FL |
609 | ret = -ENOTBLK; |
610 | goto exit; | |
354b75bf | 611 | } |
7f9a8dc8 | 612 | |
354b75bf | 613 | mmc_dat.sg_len = sg_cnt; |
354b75bf | 614 | mmc_dat.blocks = req_sz / func_blk_sz; |
354b75bf FL |
615 | mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */ |
616 | mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */ | |
7f9a8dc8 | 617 | /* incrementing addr for function 1 */ |
354b75bf FL |
618 | if (fn == 1) |
619 | addr += req_sz; | |
620 | ||
621 | mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card); | |
71201496 | 622 | mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req); |
354b75bf FL |
623 | |
624 | ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error; | |
bb350711 | 625 | if (ret == -ENOMEDIUM) { |
a1ce7a0d | 626 | brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); |
bb350711 AS |
627 | break; |
628 | } else if (ret != 0) { | |
354b75bf FL |
629 | brcmf_err("CMD53 sg block %s failed %d\n", |
630 | write ? "write" : "read", ret); | |
631 | ret = -EIO; | |
632 | break; | |
633 | } | |
634 | } | |
635 | ||
af5b5e62 | 636 | if (!write && sdiodev->settings->bus.sdio.broken_sg_support) { |
3b81a680 FL |
637 | local_pkt_next = local_list.next; |
638 | orig_offset = 0; | |
639 | skb_queue_walk(pktlist, pkt_next) { | |
640 | dst_offset = 0; | |
641 | do { | |
642 | req_sz = local_pkt_next->len - orig_offset; | |
643 | req_sz = min_t(uint, pkt_next->len - dst_offset, | |
644 | req_sz); | |
645 | orig_data = local_pkt_next->data + orig_offset; | |
646 | dst_data = pkt_next->data + dst_offset; | |
647 | memcpy(dst_data, orig_data, req_sz); | |
648 | orig_offset += req_sz; | |
649 | dst_offset += req_sz; | |
650 | if (orig_offset == local_pkt_next->len) { | |
651 | orig_offset = 0; | |
652 | local_pkt_next = local_pkt_next->next; | |
653 | } | |
654 | if (dst_offset == pkt_next->len) | |
655 | break; | |
656 | } while (!skb_queue_empty(&local_list)); | |
657 | } | |
658 | } | |
659 | ||
660 | exit: | |
af1fa210 | 661 | sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents); |
3b81a680 FL |
662 | while ((pkt_next = __skb_dequeue(&local_list)) != NULL) |
663 | brcmu_pkt_buf_free_skb(pkt_next); | |
354b75bf FL |
664 | |
665 | return ret; | |
78b3f1c5 FL |
666 | } |
667 | ||
a7cdd821 | 668 | int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) |
5adfeb63 AS |
669 | { |
670 | struct sk_buff *mypkt; | |
671 | int err; | |
672 | ||
673 | mypkt = brcmu_pkt_buf_get_skb(nbytes); | |
674 | if (!mypkt) { | |
5e8149f5 | 675 | brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", |
5adfeb63 AS |
676 | nbytes); |
677 | return -EIO; | |
678 | } | |
679 | ||
a7cdd821 | 680 | err = brcmf_sdiod_recv_pkt(sdiodev, mypkt); |
5adfeb63 AS |
681 | if (!err) |
682 | memcpy(buf, mypkt->data, nbytes); | |
683 | ||
684 | brcmu_pkt_buf_free_skb(mypkt); | |
685 | return err; | |
686 | } | |
687 | ||
a7cdd821 | 688 | int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt) |
5adfeb63 | 689 | { |
a7cdd821 | 690 | u32 addr = sdiodev->sbwad; |
5adfeb63 AS |
691 | int err = 0; |
692 | ||
a7cdd821 | 693 | brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len); |
5adfeb63 | 694 | |
a7cdd821 | 695 | err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); |
5adfeb63 | 696 | if (err) |
7057fd00 | 697 | goto done; |
5b435de0 | 698 | |
a7cdd821 | 699 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt); |
5adfeb63 | 700 | |
7057fd00 | 701 | done: |
5adfeb63 AS |
702 | return err; |
703 | } | |
704 | ||
a7cdd821 AS |
705 | int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev, |
706 | struct sk_buff_head *pktq, uint totlen) | |
5adfeb63 | 707 | { |
a413e39a AS |
708 | struct sk_buff *glom_skb; |
709 | struct sk_buff *skb; | |
a7cdd821 | 710 | u32 addr = sdiodev->sbwad; |
5adfeb63 AS |
711 | int err = 0; |
712 | ||
a7cdd821 AS |
713 | brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", |
714 | addr, pktq->qlen); | |
5adfeb63 | 715 | |
a7cdd821 | 716 | err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); |
5adfeb63 | 717 | if (err) |
7057fd00 | 718 | goto done; |
5b435de0 | 719 | |
a413e39a | 720 | if (pktq->qlen == 1) |
a7cdd821 AS |
721 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, |
722 | pktq->next); | |
a413e39a AS |
723 | else if (!sdiodev->sg_support) { |
724 | glom_skb = brcmu_pkt_buf_get_skb(totlen); | |
725 | if (!glom_skb) | |
726 | return -ENOMEM; | |
a7cdd821 AS |
727 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, |
728 | glom_skb); | |
a413e39a AS |
729 | if (err) |
730 | goto done; | |
731 | ||
732 | skb_queue_walk(pktq, skb) { | |
733 | memcpy(skb->data, glom_skb->data, skb->len); | |
734 | skb_pull(glom_skb, skb->len); | |
735 | } | |
736 | } else | |
a7cdd821 AS |
737 | err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr, |
738 | pktq); | |
5b435de0 | 739 | |
7057fd00 | 740 | done: |
5adfeb63 | 741 | return err; |
5b435de0 AS |
742 | } |
743 | ||
a7cdd821 | 744 | int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) |
5adfeb63 AS |
745 | { |
746 | struct sk_buff *mypkt; | |
a7cdd821 | 747 | u32 addr = sdiodev->sbwad; |
5adfeb63 AS |
748 | int err; |
749 | ||
750 | mypkt = brcmu_pkt_buf_get_skb(nbytes); | |
751 | if (!mypkt) { | |
5e8149f5 | 752 | brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", |
5adfeb63 AS |
753 | nbytes); |
754 | return -EIO; | |
755 | } | |
756 | ||
757 | memcpy(mypkt->data, buf, nbytes); | |
4aef267e | 758 | |
a7cdd821 | 759 | err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); |
4aef267e | 760 | |
fcaac2b1 | 761 | if (!err) |
a7cdd821 AS |
762 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr, |
763 | mypkt); | |
5adfeb63 AS |
764 | |
765 | brcmu_pkt_buf_free_skb(mypkt); | |
766 | return err; | |
767 | ||
768 | } | |
769 | ||
a7cdd821 AS |
770 | int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev, |
771 | struct sk_buff_head *pktq) | |
5b435de0 | 772 | { |
c8cce1f9 | 773 | struct sk_buff *skb; |
a7cdd821 | 774 | u32 addr = sdiodev->sbwad; |
fcaac2b1 | 775 | int err; |
5b435de0 | 776 | |
a7cdd821 | 777 | brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen); |
5b435de0 | 778 | |
a7cdd821 | 779 | err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); |
fcaac2b1 AS |
780 | if (err) |
781 | return err; | |
5b435de0 | 782 | |
c8cce1f9 AS |
783 | if (pktq->qlen == 1 || !sdiodev->sg_support) |
784 | skb_queue_walk(pktq, skb) { | |
a7cdd821 AS |
785 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, |
786 | addr, skb); | |
c8cce1f9 AS |
787 | if (err) |
788 | break; | |
789 | } | |
790 | else | |
a7cdd821 AS |
791 | err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr, |
792 | pktq); | |
c8cce1f9 AS |
793 | |
794 | return err; | |
5b435de0 AS |
795 | } |
796 | ||
ba540b01 | 797 | int |
a39be27b AS |
798 | brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address, |
799 | u8 *data, uint size) | |
5b435de0 | 800 | { |
ba540b01 FL |
801 | int bcmerror = 0; |
802 | struct sk_buff *pkt; | |
803 | u32 sdaddr; | |
804 | uint dsize; | |
805 | ||
806 | dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); | |
807 | pkt = dev_alloc_skb(dsize); | |
808 | if (!pkt) { | |
809 | brcmf_err("dev_alloc_skb failed: len %d\n", dsize); | |
810 | return -EIO; | |
811 | } | |
812 | pkt->priority = 0; | |
4c6e869d | 813 | |
ba540b01 FL |
814 | /* Determine initial transfer parameters */ |
815 | sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK; | |
816 | if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK) | |
817 | dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr); | |
818 | else | |
819 | dsize = size; | |
5b435de0 | 820 | |
ba540b01 FL |
821 | sdio_claim_host(sdiodev->func[1]); |
822 | ||
823 | /* Do the transfer(s) */ | |
824 | while (size) { | |
825 | /* Set the backplane window to include the start address */ | |
a39be27b | 826 | bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address); |
ba540b01 FL |
827 | if (bcmerror) |
828 | break; | |
829 | ||
830 | brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n", | |
831 | write ? "write" : "read", dsize, | |
832 | sdaddr, address & SBSDIO_SBWINDOW_MASK); | |
833 | ||
834 | sdaddr &= SBSDIO_SB_OFT_ADDR_MASK; | |
835 | sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
836 | ||
837 | skb_put(pkt, dsize); | |
838 | if (write) | |
839 | memcpy(pkt->data, data, dsize); | |
a39be27b AS |
840 | bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write, |
841 | sdaddr, pkt); | |
ba540b01 FL |
842 | if (bcmerror) { |
843 | brcmf_err("membytes transfer failed\n"); | |
844 | break; | |
845 | } | |
846 | if (!write) | |
847 | memcpy(data, pkt->data, dsize); | |
79c868e5 | 848 | skb_trim(pkt, 0); |
ba540b01 FL |
849 | |
850 | /* Adjust for next transfer (if any) */ | |
851 | size -= dsize; | |
852 | if (size) { | |
853 | data += dsize; | |
854 | address += dsize; | |
855 | sdaddr = 0; | |
856 | dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); | |
857 | } | |
4c6e869d AS |
858 | } |
859 | ||
ba540b01 | 860 | dev_kfree_skb(pkt); |
4c6e869d | 861 | |
ba540b01 | 862 | /* Return the window to backplane enumeration space for core access */ |
a39be27b | 863 | if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad)) |
ba540b01 FL |
864 | brcmf_err("FAILED to set window back to 0x%x\n", |
865 | sdiodev->sbwad); | |
4c6e869d | 866 | |
ba540b01 | 867 | sdio_release_host(sdiodev->func[1]); |
4c6e869d | 868 | |
ba540b01 | 869 | return bcmerror; |
5b435de0 AS |
870 | } |
871 | ||
a39be27b | 872 | int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn) |
5b435de0 AS |
873 | { |
874 | char t_func = (char)fn; | |
c3203374 | 875 | brcmf_dbg(SDIO, "Enter\n"); |
5b435de0 AS |
876 | |
877 | /* issue abort cmd52 command through F0 */ | |
71c60cf2 AS |
878 | brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT, |
879 | sizeof(t_func), &t_func, true); | |
5b435de0 | 880 | |
c3203374 | 881 | brcmf_dbg(SDIO, "Exit\n"); |
5b435de0 AS |
882 | return 0; |
883 | } | |
884 | ||
e0045bf8 | 885 | void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev) |
af1fa210 | 886 | { |
e0045bf8 HM |
887 | struct sdio_func *func; |
888 | struct mmc_host *host; | |
889 | uint max_blocks; | |
af1fa210 AS |
890 | uint nents; |
891 | int err; | |
892 | ||
e0045bf8 HM |
893 | func = sdiodev->func[2]; |
894 | host = func->card->host; | |
895 | sdiodev->sg_support = host->max_segs > 1; | |
896 | max_blocks = min_t(uint, host->max_blk_count, 511u); | |
897 | sdiodev->max_request_size = min_t(uint, host->max_req_size, | |
898 | max_blocks * func->cur_blksize); | |
899 | sdiodev->max_segment_count = min_t(uint, host->max_segs, | |
900 | SG_MAX_SINGLE_ALLOC); | |
901 | sdiodev->max_segment_size = host->max_seg_size; | |
902 | ||
af1fa210 AS |
903 | if (!sdiodev->sg_support) |
904 | return; | |
905 | ||
7d34b056 | 906 | nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE, |
af5b5e62 | 907 | sdiodev->settings->bus.sdio.txglomsz); |
af1fa210 AS |
908 | nents += (nents >> 4) + 1; |
909 | ||
910 | WARN_ON(nents > sdiodev->max_segment_count); | |
911 | ||
912 | brcmf_dbg(TRACE, "nents=%d\n", nents); | |
913 | err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL); | |
914 | if (err < 0) { | |
915 | brcmf_err("allocation failed: disable scatter-gather"); | |
916 | sdiodev->sg_support = false; | |
917 | } | |
918 | ||
af5b5e62 | 919 | sdiodev->txglomsz = sdiodev->settings->bus.sdio.txglomsz; |
af1fa210 AS |
920 | } |
921 | ||
99824643 AS |
922 | #ifdef CONFIG_PM_SLEEP |
923 | static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev) | |
924 | { | |
925 | sdiodev->freezer = kzalloc(sizeof(*sdiodev->freezer), GFP_KERNEL); | |
926 | if (!sdiodev->freezer) | |
927 | return -ENOMEM; | |
928 | atomic_set(&sdiodev->freezer->thread_count, 0); | |
929 | atomic_set(&sdiodev->freezer->freezing, 0); | |
930 | init_waitqueue_head(&sdiodev->freezer->thread_freeze); | |
931 | init_completion(&sdiodev->freezer->resumed); | |
932 | return 0; | |
933 | } | |
934 | ||
935 | static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev) | |
936 | { | |
937 | if (sdiodev->freezer) { | |
938 | WARN_ON(atomic_read(&sdiodev->freezer->freezing)); | |
939 | kfree(sdiodev->freezer); | |
940 | } | |
941 | } | |
942 | ||
943 | static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev *sdiodev) | |
944 | { | |
945 | atomic_t *expect = &sdiodev->freezer->thread_count; | |
946 | int res = 0; | |
947 | ||
948 | sdiodev->freezer->frozen_count = 0; | |
949 | reinit_completion(&sdiodev->freezer->resumed); | |
950 | atomic_set(&sdiodev->freezer->freezing, 1); | |
951 | brcmf_sdio_trigger_dpc(sdiodev->bus); | |
952 | wait_event(sdiodev->freezer->thread_freeze, | |
953 | atomic_read(expect) == sdiodev->freezer->frozen_count); | |
954 | sdio_claim_host(sdiodev->func[1]); | |
955 | res = brcmf_sdio_sleep(sdiodev->bus, true); | |
956 | sdio_release_host(sdiodev->func[1]); | |
957 | return res; | |
958 | } | |
959 | ||
960 | static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev *sdiodev) | |
961 | { | |
962 | sdio_claim_host(sdiodev->func[1]); | |
963 | brcmf_sdio_sleep(sdiodev->bus, false); | |
964 | sdio_release_host(sdiodev->func[1]); | |
965 | atomic_set(&sdiodev->freezer->freezing, 0); | |
966 | complete_all(&sdiodev->freezer->resumed); | |
967 | } | |
968 | ||
969 | bool brcmf_sdiod_freezing(struct brcmf_sdio_dev *sdiodev) | |
970 | { | |
971 | return atomic_read(&sdiodev->freezer->freezing); | |
972 | } | |
973 | ||
974 | void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev *sdiodev) | |
975 | { | |
976 | if (!brcmf_sdiod_freezing(sdiodev)) | |
977 | return; | |
978 | sdiodev->freezer->frozen_count++; | |
979 | wake_up(&sdiodev->freezer->thread_freeze); | |
980 | wait_for_completion(&sdiodev->freezer->resumed); | |
981 | } | |
982 | ||
983 | void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev *sdiodev) | |
984 | { | |
985 | atomic_inc(&sdiodev->freezer->thread_count); | |
986 | } | |
987 | ||
988 | void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev *sdiodev) | |
989 | { | |
990 | atomic_dec(&sdiodev->freezer->thread_count); | |
991 | } | |
992 | #else | |
993 | static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev) | |
994 | { | |
995 | return 0; | |
996 | } | |
997 | ||
998 | static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev) | |
999 | { | |
1000 | } | |
1001 | #endif /* CONFIG_PM_SLEEP */ | |
1002 | ||
a39be27b AS |
1003 | static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev) |
1004 | { | |
5768f31e | 1005 | sdiodev->state = BRCMF_SDIOD_DOWN; |
a39be27b | 1006 | if (sdiodev->bus) { |
9fbe2a6d | 1007 | brcmf_sdio_remove(sdiodev->bus); |
a39be27b AS |
1008 | sdiodev->bus = NULL; |
1009 | } | |
1010 | ||
99824643 AS |
1011 | brcmf_sdiod_freezer_detach(sdiodev); |
1012 | ||
a39be27b AS |
1013 | /* Disable Function 2 */ |
1014 | sdio_claim_host(sdiodev->func[2]); | |
1015 | sdio_disable_func(sdiodev->func[2]); | |
1016 | sdio_release_host(sdiodev->func[2]); | |
1017 | ||
1018 | /* Disable Function 1 */ | |
1019 | sdio_claim_host(sdiodev->func[1]); | |
1020 | sdio_disable_func(sdiodev->func[1]); | |
1021 | sdio_release_host(sdiodev->func[1]); | |
1022 | ||
af1fa210 | 1023 | sg_free_table(&sdiodev->sgtable); |
a39be27b AS |
1024 | sdiodev->sbwad = 0; |
1025 | ||
063d5177 | 1026 | pm_runtime_allow(sdiodev->func[1]->card->host->parent); |
a39be27b AS |
1027 | return 0; |
1028 | } | |
1029 | ||
bdf1340c AS |
1030 | static void brcmf_sdiod_host_fixup(struct mmc_host *host) |
1031 | { | |
1032 | /* runtime-pm powers off the device */ | |
1033 | pm_runtime_forbid(host->parent); | |
1034 | /* avoid removal detection upon resume */ | |
1035 | host->caps |= MMC_CAP_NONREMOVABLE; | |
1036 | } | |
1037 | ||
a39be27b | 1038 | static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev) |
e2dc9eea | 1039 | { |
a39be27b | 1040 | int ret = 0; |
e2dc9eea AS |
1041 | |
1042 | sdiodev->num_funcs = 2; | |
1043 | ||
1044 | sdio_claim_host(sdiodev->func[1]); | |
1045 | ||
a39be27b AS |
1046 | ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE); |
1047 | if (ret) { | |
e2dc9eea | 1048 | brcmf_err("Failed to set F1 blocksize\n"); |
a39be27b | 1049 | sdio_release_host(sdiodev->func[1]); |
e2dc9eea AS |
1050 | goto out; |
1051 | } | |
a39be27b AS |
1052 | ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE); |
1053 | if (ret) { | |
e2dc9eea | 1054 | brcmf_err("Failed to set F2 blocksize\n"); |
a39be27b | 1055 | sdio_release_host(sdiodev->func[1]); |
e2dc9eea AS |
1056 | goto out; |
1057 | } | |
1058 | ||
71370eb8 AS |
1059 | /* increase F2 timeout */ |
1060 | sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY; | |
1061 | ||
463c30b3 | 1062 | /* Enable Function 1 */ |
a39be27b AS |
1063 | ret = sdio_enable_func(sdiodev->func[1]); |
1064 | sdio_release_host(sdiodev->func[1]); | |
1065 | if (ret) { | |
1066 | brcmf_err("Failed to enable F1: err=%d\n", ret); | |
463c30b3 AS |
1067 | goto out; |
1068 | } | |
e2dc9eea | 1069 | |
99824643 AS |
1070 | ret = brcmf_sdiod_freezer_attach(sdiodev); |
1071 | if (ret) | |
1072 | goto out; | |
1073 | ||
e49b06ba | 1074 | /* try to attach to the target device */ |
82d7f3c1 | 1075 | sdiodev->bus = brcmf_sdio_probe(sdiodev); |
e49b06ba | 1076 | if (!sdiodev->bus) { |
e49b06ba AS |
1077 | ret = -ENODEV; |
1078 | goto out; | |
1079 | } | |
e0045bf8 | 1080 | brcmf_sdiod_host_fixup(sdiodev->func[2]->card->host); |
e49b06ba AS |
1081 | out: |
1082 | if (ret) | |
a39be27b | 1083 | brcmf_sdiod_remove(sdiodev); |
e49b06ba AS |
1084 | |
1085 | return ret; | |
1086 | } | |
1087 | ||
5779ae6a | 1088 | #define BRCMF_SDIO_DEVICE(dev_id) \ |
8bd61f8d | 1089 | {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)} |
5779ae6a | 1090 | |
e49b06ba AS |
1091 | /* devices we support, null terminated */ |
1092 | static const struct sdio_device_id brcmf_sdmmc_ids[] = { | |
8bd61f8d AS |
1093 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143), |
1094 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241), | |
1095 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329), | |
1096 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330), | |
1097 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334), | |
1098 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340), | |
1099 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341), | |
1100 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362), | |
1101 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339), | |
25911556 | 1102 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430), |
9c510265 | 1103 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345), |
8bd61f8d | 1104 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354), |
496aec57 | 1105 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4356), |
5779ae6a | 1106 | { /* end: all zeroes */ } |
e49b06ba AS |
1107 | }; |
1108 | MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids); | |
1109 | ||
e49b06ba | 1110 | |
00e27eeb AS |
1111 | static void brcmf_sdiod_acpi_set_power_manageable(struct device *dev, |
1112 | int val) | |
1113 | { | |
1114 | #if IS_ENABLED(CONFIG_ACPI) | |
1115 | struct acpi_device *adev; | |
1116 | ||
1117 | adev = ACPI_COMPANION(dev); | |
1118 | if (adev) | |
1119 | adev->flags.power_manageable = 0; | |
1120 | #endif | |
1121 | } | |
1122 | ||
e2dc9eea AS |
1123 | static int brcmf_ops_sdio_probe(struct sdio_func *func, |
1124 | const struct sdio_device_id *id) | |
1125 | { | |
1126 | int err; | |
1127 | struct brcmf_sdio_dev *sdiodev; | |
1128 | struct brcmf_bus *bus_if; | |
f0992ace | 1129 | struct device *dev; |
e2dc9eea AS |
1130 | |
1131 | brcmf_dbg(SDIO, "Enter\n"); | |
1132 | brcmf_dbg(SDIO, "Class=%x\n", func->class); | |
1133 | brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); | |
1134 | brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); | |
1135 | brcmf_dbg(SDIO, "Function#: %d\n", func->num); | |
1136 | ||
f0992ace | 1137 | dev = &func->dev; |
00e27eeb AS |
1138 | /* prohibit ACPI power management for this device */ |
1139 | brcmf_sdiod_acpi_set_power_manageable(dev, 0); | |
f0992ace | 1140 | |
e2dc9eea AS |
1141 | /* Consume func num 1 but dont do anything with it. */ |
1142 | if (func->num == 1) | |
1143 | return 0; | |
1144 | ||
1145 | /* Ignore anything but func 2 */ | |
1146 | if (func->num != 2) | |
1147 | return -ENODEV; | |
1148 | ||
1149 | bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL); | |
1150 | if (!bus_if) | |
1151 | return -ENOMEM; | |
1152 | sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL); | |
1153 | if (!sdiodev) { | |
1154 | kfree(bus_if); | |
1155 | return -ENOMEM; | |
1156 | } | |
1157 | ||
36c4e7e4 AS |
1158 | /* store refs to functions used. mmc_card does |
1159 | * not hold the F0 function pointer. | |
1160 | */ | |
1161 | sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL); | |
1162 | sdiodev->func[0]->num = 0; | |
e2dc9eea AS |
1163 | sdiodev->func[1] = func->card->sdio_func[0]; |
1164 | sdiodev->func[2] = func; | |
1165 | ||
1166 | sdiodev->bus_if = bus_if; | |
1167 | bus_if->bus_priv.sdio = sdiodev; | |
943258b6 | 1168 | bus_if->proto_type = BRCMF_PROTO_BCDC; |
e2dc9eea AS |
1169 | dev_set_drvdata(&func->dev, bus_if); |
1170 | dev_set_drvdata(&sdiodev->func[1]->dev, bus_if); | |
1171 | sdiodev->dev = &sdiodev->func[1]->dev; | |
330b4e4b | 1172 | |
a1ce7a0d | 1173 | brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN); |
e2dc9eea | 1174 | |
a39be27b AS |
1175 | brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n"); |
1176 | err = brcmf_sdiod_probe(sdiodev); | |
e2dc9eea AS |
1177 | if (err) { |
1178 | brcmf_err("F2 error, probe failed %d...\n", err); | |
1179 | goto fail; | |
1180 | } | |
1181 | ||
1182 | brcmf_dbg(SDIO, "F2 init completed...\n"); | |
1183 | return 0; | |
1184 | ||
1185 | fail: | |
1186 | dev_set_drvdata(&func->dev, NULL); | |
1187 | dev_set_drvdata(&sdiodev->func[1]->dev, NULL); | |
36c4e7e4 | 1188 | kfree(sdiodev->func[0]); |
e2dc9eea AS |
1189 | kfree(sdiodev); |
1190 | kfree(bus_if); | |
1191 | return err; | |
1192 | } | |
1193 | ||
1194 | static void brcmf_ops_sdio_remove(struct sdio_func *func) | |
1195 | { | |
1196 | struct brcmf_bus *bus_if; | |
1197 | struct brcmf_sdio_dev *sdiodev; | |
1198 | ||
1199 | brcmf_dbg(SDIO, "Enter\n"); | |
1200 | brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); | |
1201 | brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); | |
1202 | brcmf_dbg(SDIO, "Function: %d\n", func->num); | |
1203 | ||
de6878c8 | 1204 | if (func->num != 1) |
e2dc9eea AS |
1205 | return; |
1206 | ||
1207 | bus_if = dev_get_drvdata(&func->dev); | |
1208 | if (bus_if) { | |
1209 | sdiodev = bus_if->bus_priv.sdio; | |
a39be27b | 1210 | brcmf_sdiod_remove(sdiodev); |
e2dc9eea AS |
1211 | |
1212 | dev_set_drvdata(&sdiodev->func[1]->dev, NULL); | |
1213 | dev_set_drvdata(&sdiodev->func[2]->dev, NULL); | |
1214 | ||
1215 | kfree(bus_if); | |
36c4e7e4 | 1216 | kfree(sdiodev->func[0]); |
e2dc9eea AS |
1217 | kfree(sdiodev); |
1218 | } | |
1219 | ||
1220 | brcmf_dbg(SDIO, "Exit\n"); | |
1221 | } | |
1222 | ||
330b4e4b HM |
1223 | void brcmf_sdio_wowl_config(struct device *dev, bool enabled) |
1224 | { | |
1225 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); | |
1226 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
1227 | ||
1228 | brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled); | |
1229 | sdiodev->wowl_enabled = enabled; | |
1230 | } | |
1231 | ||
e2dc9eea | 1232 | #ifdef CONFIG_PM_SLEEP |
a39be27b | 1233 | static int brcmf_ops_sdio_suspend(struct device *dev) |
e2dc9eea | 1234 | { |
99824643 | 1235 | struct sdio_func *func; |
8982cd40 AS |
1236 | struct brcmf_bus *bus_if; |
1237 | struct brcmf_sdio_dev *sdiodev; | |
330b4e4b | 1238 | mmc_pm_flag_t sdio_flags; |
e2dc9eea | 1239 | |
99824643 AS |
1240 | func = container_of(dev, struct sdio_func, dev); |
1241 | brcmf_dbg(SDIO, "Enter: F%d\n", func->num); | |
1242 | if (func->num != SDIO_FUNC_1) | |
1243 | return 0; | |
1244 | ||
e2dc9eea | 1245 | |
8982cd40 AS |
1246 | bus_if = dev_get_drvdata(dev); |
1247 | sdiodev = bus_if->bus_priv.sdio; | |
1248 | ||
99824643 | 1249 | brcmf_sdiod_freezer_on(sdiodev); |
8982cd40 | 1250 | brcmf_sdio_wd_timer(sdiodev->bus, 0); |
3e3831c4 | 1251 | |
bdf1340c | 1252 | sdio_flags = MMC_PM_KEEP_POWER; |
330b4e4b | 1253 | if (sdiodev->wowl_enabled) { |
af5b5e62 HM |
1254 | if (sdiodev->settings->bus.sdio.oob_irq_supported) |
1255 | enable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr); | |
330b4e4b | 1256 | else |
bdf1340c | 1257 | sdio_flags |= MMC_PM_WAKE_SDIO_IRQ; |
e2dc9eea | 1258 | } |
bdf1340c AS |
1259 | if (sdio_set_host_pm_flags(sdiodev->func[1], sdio_flags)) |
1260 | brcmf_err("Failed to set pm_flags %x\n", sdio_flags); | |
330b4e4b | 1261 | return 0; |
e2dc9eea AS |
1262 | } |
1263 | ||
a39be27b | 1264 | static int brcmf_ops_sdio_resume(struct device *dev) |
e2dc9eea AS |
1265 | { |
1266 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); | |
1267 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
99824643 | 1268 | struct sdio_func *func = container_of(dev, struct sdio_func, dev); |
e2dc9eea | 1269 | |
99824643 AS |
1270 | brcmf_dbg(SDIO, "Enter: F%d\n", func->num); |
1271 | if (func->num != SDIO_FUNC_2) | |
1272 | return 0; | |
1273 | ||
1274 | brcmf_sdiod_freezer_off(sdiodev); | |
e2dc9eea AS |
1275 | return 0; |
1276 | } | |
1277 | ||
1278 | static const struct dev_pm_ops brcmf_sdio_pm_ops = { | |
a39be27b AS |
1279 | .suspend = brcmf_ops_sdio_suspend, |
1280 | .resume = brcmf_ops_sdio_resume, | |
e2dc9eea AS |
1281 | }; |
1282 | #endif /* CONFIG_PM_SLEEP */ | |
1283 | ||
1284 | static struct sdio_driver brcmf_sdmmc_driver = { | |
1285 | .probe = brcmf_ops_sdio_probe, | |
1286 | .remove = brcmf_ops_sdio_remove, | |
8ea56be0 | 1287 | .name = KBUILD_MODNAME, |
e2dc9eea | 1288 | .id_table = brcmf_sdmmc_ids, |
e2dc9eea | 1289 | .drv = { |
0b0acd8c FL |
1290 | .owner = THIS_MODULE, |
1291 | #ifdef CONFIG_PM_SLEEP | |
e2dc9eea | 1292 | .pm = &brcmf_sdio_pm_ops, |
e2dc9eea | 1293 | #endif /* CONFIG_PM_SLEEP */ |
0b0acd8c | 1294 | }, |
e2dc9eea AS |
1295 | }; |
1296 | ||
e2dc9eea AS |
1297 | void brcmf_sdio_register(void) |
1298 | { | |
1299 | int ret; | |
1300 | ||
1301 | ret = sdio_register_driver(&brcmf_sdmmc_driver); | |
1302 | if (ret) | |
1303 | brcmf_err("sdio_register_driver failed: %d\n", ret); | |
1304 | } | |
1305 | ||
1306 | void brcmf_sdio_exit(void) | |
1307 | { | |
1308 | brcmf_dbg(SDIO, "Enter\n"); | |
1309 | ||
8ea56be0 | 1310 | sdio_unregister_driver(&brcmf_sdmmc_driver); |
e2dc9eea AS |
1311 | } |
1312 |