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