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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> | |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/scatterlist.h> | |
26 | #include <linux/mmc/sdio.h> | |
27 | #include <linux/mmc/core.h> | |
28 | #include <linux/mmc/sdio_func.h> | |
29 | #include <linux/mmc/card.h> | |
30 | #include <linux/mmc/host.h> | |
31 | #include <linux/pm_runtime.h> | |
32 | #include <linux/suspend.h> | |
33 | #include <linux/errno.h> | |
34 | #include <linux/module.h> | |
35 | #include <linux/acpi.h> | |
36 | #include <net/cfg80211.h> | |
37 | ||
38 | #include <defs.h> | |
39 | #include <brcm_hw_ids.h> | |
40 | #include <brcmu_utils.h> | |
41 | #include <brcmu_wifi.h> | |
42 | #include <chipcommon.h> | |
43 | #include <soc.h> | |
44 | #include "chip.h" | |
45 | #include "bus.h" | |
46 | #include "debug.h" | |
47 | #include "sdio.h" | |
48 | #include "core.h" | |
49 | #include "common.h" | |
50 | ||
51 | #define SDIOH_API_ACCESS_RETRY_LIMIT 2 | |
52 | ||
53 | #define DMA_ALIGN_MASK 0x03 | |
54 | ||
55 | #define SDIO_FUNC1_BLOCKSIZE 64 | |
56 | #define SDIO_FUNC2_BLOCKSIZE 512 | |
57 | /* Maximum milliseconds to wait for F2 to come up */ | |
58 | #define SDIO_WAIT_F2RDY 3000 | |
59 | ||
60 | #define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */ | |
61 | ||
62 | struct brcmf_sdiod_freezer { | |
63 | atomic_t freezing; | |
64 | atomic_t thread_count; | |
65 | u32 frozen_count; | |
66 | wait_queue_head_t thread_freeze; | |
67 | struct completion resumed; | |
68 | }; | |
69 | ||
70 | static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id) | |
71 | { | |
72 | struct brcmf_bus *bus_if = dev_get_drvdata(dev_id); | |
73 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
74 | ||
75 | brcmf_dbg(INTR, "OOB intr triggered\n"); | |
76 | ||
77 | /* out-of-band interrupt is level-triggered which won't | |
78 | * be cleared until dpc | |
79 | */ | |
80 | if (sdiodev->irq_en) { | |
81 | disable_irq_nosync(irq); | |
82 | sdiodev->irq_en = false; | |
83 | } | |
84 | ||
85 | brcmf_sdio_isr(sdiodev->bus); | |
86 | ||
87 | return IRQ_HANDLED; | |
88 | } | |
89 | ||
90 | static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func) | |
91 | { | |
92 | struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev); | |
93 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
94 | ||
95 | brcmf_dbg(INTR, "IB intr triggered\n"); | |
96 | ||
97 | brcmf_sdio_isr(sdiodev->bus); | |
98 | } | |
99 | ||
100 | /* dummy handler for SDIO function 2 interrupt */ | |
101 | static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func) | |
102 | { | |
103 | } | |
104 | ||
105 | int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev) | |
106 | { | |
107 | struct brcmfmac_sdio_pd *pdata; | |
108 | int ret = 0; | |
109 | u8 data; | |
110 | u32 addr, gpiocontrol; | |
111 | unsigned long flags; | |
112 | ||
113 | pdata = &sdiodev->settings->bus.sdio; | |
114 | if (pdata->oob_irq_supported) { | |
115 | brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n", | |
116 | pdata->oob_irq_nr); | |
117 | ret = request_irq(pdata->oob_irq_nr, brcmf_sdiod_oob_irqhandler, | |
118 | pdata->oob_irq_flags, "brcmf_oob_intr", | |
119 | &sdiodev->func[1]->dev); | |
120 | if (ret != 0) { | |
121 | brcmf_err("request_irq failed %d\n", ret); | |
122 | return ret; | |
123 | } | |
124 | sdiodev->oob_irq_requested = true; | |
125 | spin_lock_init(&sdiodev->irq_en_lock); | |
126 | spin_lock_irqsave(&sdiodev->irq_en_lock, flags); | |
127 | sdiodev->irq_en = true; | |
128 | spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags); | |
129 | ||
130 | ret = enable_irq_wake(pdata->oob_irq_nr); | |
131 | if (ret != 0) { | |
132 | brcmf_err("enable_irq_wake failed %d\n", ret); | |
133 | return ret; | |
134 | } | |
135 | sdiodev->irq_wake = true; | |
136 | ||
137 | sdio_claim_host(sdiodev->func[1]); | |
138 | ||
139 | if (sdiodev->bus_if->chip == BRCM_CC_43362_CHIP_ID) { | |
140 | /* assign GPIO to SDIO core */ | |
141 | addr = CORE_CC_REG(SI_ENUM_BASE, gpiocontrol); | |
142 | gpiocontrol = brcmf_sdiod_regrl(sdiodev, addr, &ret); | |
143 | gpiocontrol |= 0x2; | |
144 | brcmf_sdiod_regwl(sdiodev, addr, gpiocontrol, &ret); | |
145 | ||
146 | brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_SELECT, 0xf, | |
147 | &ret); | |
148 | brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_OUT, 0, &ret); | |
149 | brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_EN, 0x2, &ret); | |
150 | } | |
151 | ||
152 | /* must configure SDIO_CCCR_IENx to enable irq */ | |
153 | data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret); | |
154 | data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1; | |
155 | brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret); | |
156 | ||
157 | /* redirect, configure and enable io for interrupt signal */ | |
158 | data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE; | |
159 | if (pdata->oob_irq_flags & IRQF_TRIGGER_HIGH) | |
160 | data |= SDIO_SEPINT_ACT_HI; | |
161 | brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret); | |
162 | ||
163 | sdio_release_host(sdiodev->func[1]); | |
164 | } else { | |
165 | brcmf_dbg(SDIO, "Entering\n"); | |
166 | sdio_claim_host(sdiodev->func[1]); | |
167 | sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler); | |
168 | sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler); | |
169 | sdio_release_host(sdiodev->func[1]); | |
170 | sdiodev->sd_irq_requested = true; | |
171 | } | |
172 | ||
173 | return 0; | |
174 | } | |
175 | ||
176 | void brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev) | |
177 | { | |
178 | ||
179 | brcmf_dbg(SDIO, "Entering oob=%d sd=%d\n", | |
180 | sdiodev->oob_irq_requested, | |
181 | sdiodev->sd_irq_requested); | |
182 | ||
183 | if (sdiodev->oob_irq_requested) { | |
184 | struct brcmfmac_sdio_pd *pdata; | |
185 | ||
186 | pdata = &sdiodev->settings->bus.sdio; | |
187 | sdio_claim_host(sdiodev->func[1]); | |
188 | brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL); | |
189 | brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL); | |
190 | sdio_release_host(sdiodev->func[1]); | |
191 | ||
192 | sdiodev->oob_irq_requested = false; | |
193 | if (sdiodev->irq_wake) { | |
194 | disable_irq_wake(pdata->oob_irq_nr); | |
195 | sdiodev->irq_wake = false; | |
196 | } | |
197 | free_irq(pdata->oob_irq_nr, &sdiodev->func[1]->dev); | |
198 | sdiodev->irq_en = false; | |
199 | sdiodev->oob_irq_requested = false; | |
200 | } | |
201 | ||
202 | if (sdiodev->sd_irq_requested) { | |
203 | sdio_claim_host(sdiodev->func[1]); | |
204 | sdio_release_irq(sdiodev->func[2]); | |
205 | sdio_release_irq(sdiodev->func[1]); | |
206 | sdio_release_host(sdiodev->func[1]); | |
207 | sdiodev->sd_irq_requested = false; | |
208 | } | |
209 | } | |
210 | ||
211 | void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev, | |
212 | enum brcmf_sdiod_state state) | |
213 | { | |
214 | if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM || | |
215 | state == sdiodev->state) | |
216 | return; | |
217 | ||
218 | brcmf_dbg(TRACE, "%d -> %d\n", sdiodev->state, state); | |
219 | switch (sdiodev->state) { | |
220 | case BRCMF_SDIOD_DATA: | |
221 | /* any other state means bus interface is down */ | |
222 | brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN); | |
223 | break; | |
224 | case BRCMF_SDIOD_DOWN: | |
225 | /* transition from DOWN to DATA means bus interface is up */ | |
226 | if (state == BRCMF_SDIOD_DATA) | |
227 | brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_UP); | |
228 | break; | |
229 | default: | |
230 | break; | |
231 | } | |
232 | sdiodev->state = state; | |
233 | } | |
234 | ||
235 | static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func, | |
236 | uint regaddr, u8 byte) | |
237 | { | |
238 | int err_ret; | |
239 | ||
240 | /* | |
241 | * Can only directly write to some F0 registers. | |
242 | * Handle CCCR_IENx and CCCR_ABORT command | |
243 | * as a special case. | |
244 | */ | |
245 | if ((regaddr == SDIO_CCCR_ABORT) || | |
246 | (regaddr == SDIO_CCCR_IENx)) | |
247 | sdio_writeb(func, byte, regaddr, &err_ret); | |
248 | else | |
249 | sdio_f0_writeb(func, byte, regaddr, &err_ret); | |
250 | ||
251 | return err_ret; | |
252 | } | |
253 | ||
254 | static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn, | |
255 | u32 addr, u8 regsz, void *data, bool write) | |
256 | { | |
257 | struct sdio_func *func; | |
258 | int ret = -EINVAL; | |
259 | ||
260 | brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n", | |
261 | write, fn, addr, regsz); | |
262 | ||
263 | /* only allow byte access on F0 */ | |
264 | if (WARN_ON(regsz > 1 && !fn)) | |
265 | return -EINVAL; | |
266 | func = sdiodev->func[fn]; | |
267 | ||
268 | switch (regsz) { | |
269 | case sizeof(u8): | |
270 | if (write) { | |
271 | if (fn) | |
272 | sdio_writeb(func, *(u8 *)data, addr, &ret); | |
273 | else | |
274 | ret = brcmf_sdiod_f0_writeb(func, addr, | |
275 | *(u8 *)data); | |
276 | } else { | |
277 | if (fn) | |
278 | *(u8 *)data = sdio_readb(func, addr, &ret); | |
279 | else | |
280 | *(u8 *)data = sdio_f0_readb(func, addr, &ret); | |
281 | } | |
282 | break; | |
283 | case sizeof(u16): | |
284 | if (write) | |
285 | sdio_writew(func, *(u16 *)data, addr, &ret); | |
286 | else | |
287 | *(u16 *)data = sdio_readw(func, addr, &ret); | |
288 | break; | |
289 | case sizeof(u32): | |
290 | if (write) | |
291 | sdio_writel(func, *(u32 *)data, addr, &ret); | |
292 | else | |
293 | *(u32 *)data = sdio_readl(func, addr, &ret); | |
294 | break; | |
295 | default: | |
296 | brcmf_err("invalid size: %d\n", regsz); | |
297 | break; | |
298 | } | |
299 | ||
300 | if (ret) | |
301 | brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n", | |
302 | write ? "write" : "read", fn, addr, ret); | |
303 | ||
304 | return ret; | |
305 | } | |
306 | ||
307 | static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr, | |
308 | u8 regsz, void *data, bool write) | |
309 | { | |
310 | u8 func; | |
311 | s32 retry = 0; | |
312 | int ret; | |
313 | ||
314 | if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM) | |
315 | return -ENOMEDIUM; | |
316 | ||
317 | /* | |
318 | * figure out how to read the register based on address range | |
319 | * 0x00 ~ 0x7FF: function 0 CCCR and FBR | |
320 | * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers | |
321 | * The rest: function 1 silicon backplane core registers | |
322 | */ | |
323 | if ((addr & ~REG_F0_REG_MASK) == 0) | |
324 | func = SDIO_FUNC_0; | |
325 | else | |
326 | func = SDIO_FUNC_1; | |
327 | ||
328 | do { | |
329 | if (!write) | |
330 | memset(data, 0, regsz); | |
331 | /* for retry wait for 1 ms till bus get settled down */ | |
332 | if (retry) | |
333 | usleep_range(1000, 2000); | |
334 | ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz, | |
335 | data, write); | |
336 | } while (ret != 0 && ret != -ENOMEDIUM && | |
337 | retry++ < SDIOH_API_ACCESS_RETRY_LIMIT); | |
338 | ||
339 | if (ret == -ENOMEDIUM) | |
340 | brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); | |
341 | else if (ret != 0) { | |
342 | /* | |
343 | * SleepCSR register access can fail when | |
344 | * waking up the device so reduce this noise | |
345 | * in the logs. | |
346 | */ | |
347 | if (addr != SBSDIO_FUNC1_SLEEPCSR) | |
348 | brcmf_err("failed to %s data F%d@0x%05x, err: %d\n", | |
349 | write ? "write" : "read", func, addr, ret); | |
350 | else | |
351 | brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n", | |
352 | write ? "write" : "read", func, addr, ret); | |
353 | } | |
354 | return ret; | |
355 | } | |
356 | ||
357 | static int | |
358 | brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address) | |
359 | { | |
360 | int err = 0, i; | |
361 | u8 addr[3]; | |
362 | ||
363 | if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM) | |
364 | return -ENOMEDIUM; | |
365 | ||
366 | addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK; | |
367 | addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK; | |
368 | addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK; | |
369 | ||
370 | for (i = 0; i < 3; i++) { | |
371 | err = brcmf_sdiod_regrw_helper(sdiodev, | |
372 | SBSDIO_FUNC1_SBADDRLOW + i, | |
373 | sizeof(u8), &addr[i], true); | |
374 | if (err) { | |
375 | brcmf_err("failed at addr: 0x%0x\n", | |
376 | SBSDIO_FUNC1_SBADDRLOW + i); | |
377 | break; | |
378 | } | |
379 | } | |
380 | ||
381 | return err; | |
382 | } | |
383 | ||
384 | static int | |
385 | brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr) | |
386 | { | |
387 | uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK; | |
388 | int err = 0; | |
389 | ||
390 | if (bar0 != sdiodev->sbwad) { | |
391 | err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0); | |
392 | if (err) | |
393 | return err; | |
394 | ||
395 | sdiodev->sbwad = bar0; | |
396 | } | |
397 | ||
398 | *addr &= SBSDIO_SB_OFT_ADDR_MASK; | |
399 | ||
400 | if (width == 4) | |
401 | *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
402 | ||
403 | return 0; | |
404 | } | |
405 | ||
406 | u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) | |
407 | { | |
408 | u8 data; | |
409 | int retval; | |
410 | ||
411 | brcmf_dbg(SDIO, "addr:0x%08x\n", addr); | |
412 | retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, | |
413 | false); | |
414 | brcmf_dbg(SDIO, "data:0x%02x\n", data); | |
415 | ||
416 | if (ret) | |
417 | *ret = retval; | |
418 | ||
419 | return data; | |
420 | } | |
421 | ||
422 | u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) | |
423 | { | |
424 | u32 data = 0; | |
425 | int retval; | |
426 | ||
427 | brcmf_dbg(SDIO, "addr:0x%08x\n", addr); | |
428 | retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr); | |
429 | if (retval) | |
430 | goto done; | |
431 | retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, | |
432 | false); | |
433 | brcmf_dbg(SDIO, "data:0x%08x\n", data); | |
434 | ||
435 | done: | |
436 | if (ret) | |
437 | *ret = retval; | |
438 | ||
439 | return data; | |
440 | } | |
441 | ||
442 | void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, | |
443 | u8 data, int *ret) | |
444 | { | |
445 | int retval; | |
446 | ||
447 | brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data); | |
448 | retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, | |
449 | true); | |
450 | if (ret) | |
451 | *ret = retval; | |
452 | } | |
453 | ||
454 | void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, | |
455 | u32 data, int *ret) | |
456 | { | |
457 | int retval; | |
458 | ||
459 | brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data); | |
460 | retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr); | |
461 | if (retval) | |
462 | goto done; | |
463 | retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, | |
464 | true); | |
465 | ||
466 | done: | |
467 | if (ret) | |
468 | *ret = retval; | |
469 | } | |
470 | ||
471 | static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn, | |
472 | bool write, u32 addr, struct sk_buff *pkt) | |
473 | { | |
474 | unsigned int req_sz; | |
475 | int err; | |
476 | ||
477 | /* Single skb use the standard mmc interface */ | |
478 | req_sz = pkt->len + 3; | |
479 | req_sz &= (uint)~3; | |
480 | ||
481 | if (write) | |
482 | err = sdio_memcpy_toio(sdiodev->func[fn], addr, | |
483 | ((u8 *)(pkt->data)), req_sz); | |
484 | else if (fn == 1) | |
485 | err = sdio_memcpy_fromio(sdiodev->func[fn], ((u8 *)(pkt->data)), | |
486 | addr, req_sz); | |
487 | else | |
488 | /* function 2 read is FIFO operation */ | |
489 | err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr, | |
490 | req_sz); | |
491 | if (err == -ENOMEDIUM) | |
492 | brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); | |
493 | return err; | |
494 | } | |
495 | ||
496 | /** | |
497 | * brcmf_sdiod_sglist_rw - SDIO interface function for block data access | |
498 | * @sdiodev: brcmfmac sdio device | |
499 | * @fn: SDIO function number | |
500 | * @write: direction flag | |
501 | * @addr: dongle memory address as source/destination | |
502 | * @pkt: skb pointer | |
503 | * | |
504 | * This function takes the respbonsibility as the interface function to MMC | |
505 | * stack for block data access. It assumes that the skb passed down by the | |
506 | * caller has already been padded and aligned. | |
507 | */ | |
508 | static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn, | |
509 | bool write, u32 addr, | |
510 | struct sk_buff_head *pktlist) | |
511 | { | |
512 | unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset; | |
513 | unsigned int max_req_sz, orig_offset, dst_offset; | |
514 | unsigned short max_seg_cnt, seg_sz; | |
515 | unsigned char *pkt_data, *orig_data, *dst_data; | |
516 | struct sk_buff *pkt_next = NULL, *local_pkt_next; | |
517 | struct sk_buff_head local_list, *target_list; | |
518 | struct mmc_request mmc_req; | |
519 | struct mmc_command mmc_cmd; | |
520 | struct mmc_data mmc_dat; | |
521 | struct scatterlist *sgl; | |
522 | int ret = 0; | |
523 | ||
524 | if (!pktlist->qlen) | |
525 | return -EINVAL; | |
526 | ||
527 | target_list = pktlist; | |
528 | /* for host with broken sg support, prepare a page aligned list */ | |
529 | __skb_queue_head_init(&local_list); | |
530 | if (!write && sdiodev->settings->bus.sdio.broken_sg_support) { | |
531 | req_sz = 0; | |
532 | skb_queue_walk(pktlist, pkt_next) | |
533 | req_sz += pkt_next->len; | |
534 | req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize); | |
535 | while (req_sz > PAGE_SIZE) { | |
536 | pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE); | |
537 | if (pkt_next == NULL) { | |
538 | ret = -ENOMEM; | |
539 | goto exit; | |
540 | } | |
541 | __skb_queue_tail(&local_list, pkt_next); | |
542 | req_sz -= PAGE_SIZE; | |
543 | } | |
544 | pkt_next = brcmu_pkt_buf_get_skb(req_sz); | |
545 | if (pkt_next == NULL) { | |
546 | ret = -ENOMEM; | |
547 | goto exit; | |
548 | } | |
549 | __skb_queue_tail(&local_list, pkt_next); | |
550 | target_list = &local_list; | |
551 | } | |
552 | ||
553 | func_blk_sz = sdiodev->func[fn]->cur_blksize; | |
554 | max_req_sz = sdiodev->max_request_size; | |
555 | max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count, | |
556 | target_list->qlen); | |
557 | seg_sz = target_list->qlen; | |
558 | pkt_offset = 0; | |
559 | pkt_next = target_list->next; | |
560 | ||
561 | memset(&mmc_req, 0, sizeof(struct mmc_request)); | |
562 | memset(&mmc_cmd, 0, sizeof(struct mmc_command)); | |
563 | memset(&mmc_dat, 0, sizeof(struct mmc_data)); | |
564 | ||
565 | mmc_dat.sg = sdiodev->sgtable.sgl; | |
566 | mmc_dat.blksz = func_blk_sz; | |
567 | mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; | |
568 | mmc_cmd.opcode = SD_IO_RW_EXTENDED; | |
569 | mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */ | |
570 | mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */ | |
571 | mmc_cmd.arg |= 1<<27; /* block mode */ | |
572 | /* for function 1 the addr will be incremented */ | |
573 | mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0; | |
574 | mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC; | |
575 | mmc_req.cmd = &mmc_cmd; | |
576 | mmc_req.data = &mmc_dat; | |
577 | ||
578 | while (seg_sz) { | |
579 | req_sz = 0; | |
580 | sg_cnt = 0; | |
581 | sgl = sdiodev->sgtable.sgl; | |
582 | /* prep sg table */ | |
583 | while (pkt_next != (struct sk_buff *)target_list) { | |
584 | pkt_data = pkt_next->data + pkt_offset; | |
585 | sg_data_sz = pkt_next->len - pkt_offset; | |
586 | if (sg_data_sz > sdiodev->max_segment_size) | |
587 | sg_data_sz = sdiodev->max_segment_size; | |
588 | if (sg_data_sz > max_req_sz - req_sz) | |
589 | sg_data_sz = max_req_sz - req_sz; | |
590 | ||
591 | sg_set_buf(sgl, pkt_data, sg_data_sz); | |
592 | ||
593 | sg_cnt++; | |
594 | sgl = sg_next(sgl); | |
595 | req_sz += sg_data_sz; | |
596 | pkt_offset += sg_data_sz; | |
597 | if (pkt_offset == pkt_next->len) { | |
598 | pkt_offset = 0; | |
599 | pkt_next = pkt_next->next; | |
600 | } | |
601 | ||
602 | if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt) | |
603 | break; | |
604 | } | |
605 | seg_sz -= sg_cnt; | |
606 | ||
607 | if (req_sz % func_blk_sz != 0) { | |
608 | brcmf_err("sg request length %u is not %u aligned\n", | |
609 | req_sz, func_blk_sz); | |
610 | ret = -ENOTBLK; | |
611 | goto exit; | |
612 | } | |
613 | ||
614 | mmc_dat.sg_len = sg_cnt; | |
615 | mmc_dat.blocks = req_sz / func_blk_sz; | |
616 | mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */ | |
617 | mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */ | |
618 | /* incrementing addr for function 1 */ | |
619 | if (fn == 1) | |
620 | addr += req_sz; | |
621 | ||
622 | mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card); | |
623 | mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req); | |
624 | ||
625 | ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error; | |
626 | if (ret == -ENOMEDIUM) { | |
627 | brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM); | |
628 | break; | |
629 | } else if (ret != 0) { | |
630 | brcmf_err("CMD53 sg block %s failed %d\n", | |
631 | write ? "write" : "read", ret); | |
632 | ret = -EIO; | |
633 | break; | |
634 | } | |
635 | } | |
636 | ||
637 | if (!write && sdiodev->settings->bus.sdio.broken_sg_support) { | |
638 | local_pkt_next = local_list.next; | |
639 | orig_offset = 0; | |
640 | skb_queue_walk(pktlist, pkt_next) { | |
641 | dst_offset = 0; | |
642 | do { | |
643 | req_sz = local_pkt_next->len - orig_offset; | |
644 | req_sz = min_t(uint, pkt_next->len - dst_offset, | |
645 | req_sz); | |
646 | orig_data = local_pkt_next->data + orig_offset; | |
647 | dst_data = pkt_next->data + dst_offset; | |
648 | memcpy(dst_data, orig_data, req_sz); | |
649 | orig_offset += req_sz; | |
650 | dst_offset += req_sz; | |
651 | if (orig_offset == local_pkt_next->len) { | |
652 | orig_offset = 0; | |
653 | local_pkt_next = local_pkt_next->next; | |
654 | } | |
655 | if (dst_offset == pkt_next->len) | |
656 | break; | |
657 | } while (!skb_queue_empty(&local_list)); | |
658 | } | |
659 | } | |
660 | ||
661 | exit: | |
662 | sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents); | |
663 | while ((pkt_next = __skb_dequeue(&local_list)) != NULL) | |
664 | brcmu_pkt_buf_free_skb(pkt_next); | |
665 | ||
666 | return ret; | |
667 | } | |
668 | ||
669 | int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) | |
670 | { | |
671 | struct sk_buff *mypkt; | |
672 | int err; | |
673 | ||
674 | mypkt = brcmu_pkt_buf_get_skb(nbytes); | |
675 | if (!mypkt) { | |
676 | brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", | |
677 | nbytes); | |
678 | return -EIO; | |
679 | } | |
680 | ||
681 | err = brcmf_sdiod_recv_pkt(sdiodev, mypkt); | |
682 | if (!err) | |
683 | memcpy(buf, mypkt->data, nbytes); | |
684 | ||
685 | brcmu_pkt_buf_free_skb(mypkt); | |
686 | return err; | |
687 | } | |
688 | ||
689 | int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt) | |
690 | { | |
691 | u32 addr = sdiodev->sbwad; | |
692 | int err = 0; | |
693 | ||
694 | brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len); | |
695 | ||
696 | err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); | |
697 | if (err) | |
698 | goto done; | |
699 | ||
700 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt); | |
701 | ||
702 | done: | |
703 | return err; | |
704 | } | |
705 | ||
706 | int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev, | |
707 | struct sk_buff_head *pktq, uint totlen) | |
708 | { | |
709 | struct sk_buff *glom_skb; | |
710 | struct sk_buff *skb; | |
711 | u32 addr = sdiodev->sbwad; | |
712 | int err = 0; | |
713 | ||
714 | brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", | |
715 | addr, pktq->qlen); | |
716 | ||
717 | err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); | |
718 | if (err) | |
719 | goto done; | |
720 | ||
721 | if (pktq->qlen == 1) | |
722 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, | |
723 | pktq->next); | |
724 | else if (!sdiodev->sg_support) { | |
725 | glom_skb = brcmu_pkt_buf_get_skb(totlen); | |
726 | if (!glom_skb) | |
727 | return -ENOMEM; | |
728 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, | |
729 | glom_skb); | |
730 | if (err) { | |
731 | brcmu_pkt_buf_free_skb(glom_skb); | |
732 | goto done; | |
733 | } | |
734 | ||
735 | skb_queue_walk(pktq, skb) { | |
736 | memcpy(skb->data, glom_skb->data, skb->len); | |
737 | skb_pull(glom_skb, skb->len); | |
738 | } | |
739 | } else | |
740 | err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr, | |
741 | pktq); | |
742 | ||
743 | done: | |
744 | return err; | |
745 | } | |
746 | ||
747 | int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) | |
748 | { | |
749 | struct sk_buff *mypkt; | |
750 | u32 addr = sdiodev->sbwad; | |
751 | int err; | |
752 | ||
753 | mypkt = brcmu_pkt_buf_get_skb(nbytes); | |
754 | if (!mypkt) { | |
755 | brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", | |
756 | nbytes); | |
757 | return -EIO; | |
758 | } | |
759 | ||
760 | memcpy(mypkt->data, buf, nbytes); | |
761 | ||
762 | err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); | |
763 | ||
764 | if (!err) | |
765 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr, | |
766 | mypkt); | |
767 | ||
768 | brcmu_pkt_buf_free_skb(mypkt); | |
769 | return err; | |
770 | ||
771 | } | |
772 | ||
773 | int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev, | |
774 | struct sk_buff_head *pktq) | |
775 | { | |
776 | struct sk_buff *skb; | |
777 | u32 addr = sdiodev->sbwad; | |
778 | int err; | |
779 | ||
780 | brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen); | |
781 | ||
782 | err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); | |
783 | if (err) | |
784 | return err; | |
785 | ||
786 | if (pktq->qlen == 1 || !sdiodev->sg_support) | |
787 | skb_queue_walk(pktq, skb) { | |
788 | err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, | |
789 | addr, skb); | |
790 | if (err) | |
791 | break; | |
792 | } | |
793 | else | |
794 | err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr, | |
795 | pktq); | |
796 | ||
797 | return err; | |
798 | } | |
799 | ||
800 | int | |
801 | brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address, | |
802 | u8 *data, uint size) | |
803 | { | |
804 | int bcmerror = 0; | |
805 | struct sk_buff *pkt; | |
806 | u32 sdaddr; | |
807 | uint dsize; | |
808 | ||
809 | dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); | |
810 | pkt = dev_alloc_skb(dsize); | |
811 | if (!pkt) { | |
812 | brcmf_err("dev_alloc_skb failed: len %d\n", dsize); | |
813 | return -EIO; | |
814 | } | |
815 | pkt->priority = 0; | |
816 | ||
817 | /* Determine initial transfer parameters */ | |
818 | sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK; | |
819 | if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK) | |
820 | dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr); | |
821 | else | |
822 | dsize = size; | |
823 | ||
824 | sdio_claim_host(sdiodev->func[1]); | |
825 | ||
826 | /* Do the transfer(s) */ | |
827 | while (size) { | |
828 | /* Set the backplane window to include the start address */ | |
829 | bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address); | |
830 | if (bcmerror) | |
831 | break; | |
832 | ||
833 | brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n", | |
834 | write ? "write" : "read", dsize, | |
835 | sdaddr, address & SBSDIO_SBWINDOW_MASK); | |
836 | ||
837 | sdaddr &= SBSDIO_SB_OFT_ADDR_MASK; | |
838 | sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG; | |
839 | ||
840 | skb_put(pkt, dsize); | |
841 | if (write) | |
842 | memcpy(pkt->data, data, dsize); | |
843 | bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write, | |
844 | sdaddr, pkt); | |
845 | if (bcmerror) { | |
846 | brcmf_err("membytes transfer failed\n"); | |
847 | break; | |
848 | } | |
849 | if (!write) | |
850 | memcpy(data, pkt->data, dsize); | |
851 | skb_trim(pkt, 0); | |
852 | ||
853 | /* Adjust for next transfer (if any) */ | |
854 | size -= dsize; | |
855 | if (size) { | |
856 | data += dsize; | |
857 | address += dsize; | |
858 | sdaddr = 0; | |
859 | dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); | |
860 | } | |
861 | } | |
862 | ||
863 | dev_kfree_skb(pkt); | |
864 | ||
865 | /* Return the window to backplane enumeration space for core access */ | |
866 | if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad)) | |
867 | brcmf_err("FAILED to set window back to 0x%x\n", | |
868 | sdiodev->sbwad); | |
869 | ||
870 | sdio_release_host(sdiodev->func[1]); | |
871 | ||
872 | return bcmerror; | |
873 | } | |
874 | ||
875 | int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn) | |
876 | { | |
877 | char t_func = (char)fn; | |
878 | brcmf_dbg(SDIO, "Enter\n"); | |
879 | ||
880 | /* issue abort cmd52 command through F0 */ | |
881 | brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT, | |
882 | sizeof(t_func), &t_func, true); | |
883 | ||
884 | brcmf_dbg(SDIO, "Exit\n"); | |
885 | return 0; | |
886 | } | |
887 | ||
888 | void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev) | |
889 | { | |
890 | struct sdio_func *func; | |
891 | struct mmc_host *host; | |
892 | uint max_blocks; | |
893 | uint nents; | |
894 | int err; | |
895 | ||
896 | func = sdiodev->func[2]; | |
897 | host = func->card->host; | |
898 | sdiodev->sg_support = host->max_segs > 1; | |
899 | max_blocks = min_t(uint, host->max_blk_count, 511u); | |
900 | sdiodev->max_request_size = min_t(uint, host->max_req_size, | |
901 | max_blocks * func->cur_blksize); | |
902 | sdiodev->max_segment_count = min_t(uint, host->max_segs, | |
903 | SG_MAX_SINGLE_ALLOC); | |
904 | sdiodev->max_segment_size = host->max_seg_size; | |
905 | ||
906 | if (!sdiodev->sg_support) | |
907 | return; | |
908 | ||
909 | nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE, | |
910 | sdiodev->settings->bus.sdio.txglomsz); | |
911 | nents += (nents >> 4) + 1; | |
912 | ||
913 | WARN_ON(nents > sdiodev->max_segment_count); | |
914 | ||
915 | brcmf_dbg(TRACE, "nents=%d\n", nents); | |
916 | err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL); | |
917 | if (err < 0) { | |
918 | brcmf_err("allocation failed: disable scatter-gather"); | |
919 | sdiodev->sg_support = false; | |
920 | } | |
921 | ||
922 | sdiodev->txglomsz = sdiodev->settings->bus.sdio.txglomsz; | |
923 | } | |
924 | ||
925 | #ifdef CONFIG_PM_SLEEP | |
926 | static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev) | |
927 | { | |
928 | sdiodev->freezer = kzalloc(sizeof(*sdiodev->freezer), GFP_KERNEL); | |
929 | if (!sdiodev->freezer) | |
930 | return -ENOMEM; | |
931 | atomic_set(&sdiodev->freezer->thread_count, 0); | |
932 | atomic_set(&sdiodev->freezer->freezing, 0); | |
933 | init_waitqueue_head(&sdiodev->freezer->thread_freeze); | |
934 | init_completion(&sdiodev->freezer->resumed); | |
935 | return 0; | |
936 | } | |
937 | ||
938 | static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev) | |
939 | { | |
940 | if (sdiodev->freezer) { | |
941 | WARN_ON(atomic_read(&sdiodev->freezer->freezing)); | |
942 | kfree(sdiodev->freezer); | |
943 | } | |
944 | } | |
945 | ||
946 | static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev *sdiodev) | |
947 | { | |
948 | atomic_t *expect = &sdiodev->freezer->thread_count; | |
949 | int res = 0; | |
950 | ||
951 | sdiodev->freezer->frozen_count = 0; | |
952 | reinit_completion(&sdiodev->freezer->resumed); | |
953 | atomic_set(&sdiodev->freezer->freezing, 1); | |
954 | brcmf_sdio_trigger_dpc(sdiodev->bus); | |
955 | wait_event(sdiodev->freezer->thread_freeze, | |
956 | atomic_read(expect) == sdiodev->freezer->frozen_count); | |
957 | sdio_claim_host(sdiodev->func[1]); | |
958 | res = brcmf_sdio_sleep(sdiodev->bus, true); | |
959 | sdio_release_host(sdiodev->func[1]); | |
960 | return res; | |
961 | } | |
962 | ||
963 | static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev *sdiodev) | |
964 | { | |
965 | sdio_claim_host(sdiodev->func[1]); | |
966 | brcmf_sdio_sleep(sdiodev->bus, false); | |
967 | sdio_release_host(sdiodev->func[1]); | |
968 | atomic_set(&sdiodev->freezer->freezing, 0); | |
969 | complete_all(&sdiodev->freezer->resumed); | |
970 | } | |
971 | ||
972 | bool brcmf_sdiod_freezing(struct brcmf_sdio_dev *sdiodev) | |
973 | { | |
974 | return atomic_read(&sdiodev->freezer->freezing); | |
975 | } | |
976 | ||
977 | void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev *sdiodev) | |
978 | { | |
979 | if (!brcmf_sdiod_freezing(sdiodev)) | |
980 | return; | |
981 | sdiodev->freezer->frozen_count++; | |
982 | wake_up(&sdiodev->freezer->thread_freeze); | |
983 | wait_for_completion(&sdiodev->freezer->resumed); | |
984 | } | |
985 | ||
986 | void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev *sdiodev) | |
987 | { | |
988 | atomic_inc(&sdiodev->freezer->thread_count); | |
989 | } | |
990 | ||
991 | void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev *sdiodev) | |
992 | { | |
993 | atomic_dec(&sdiodev->freezer->thread_count); | |
994 | } | |
995 | #else | |
996 | static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev) | |
997 | { | |
998 | return 0; | |
999 | } | |
1000 | ||
1001 | static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev) | |
1002 | { | |
1003 | } | |
1004 | #endif /* CONFIG_PM_SLEEP */ | |
1005 | ||
1006 | static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev) | |
1007 | { | |
1008 | sdiodev->state = BRCMF_SDIOD_DOWN; | |
1009 | if (sdiodev->bus) { | |
1010 | brcmf_sdio_remove(sdiodev->bus); | |
1011 | sdiodev->bus = NULL; | |
1012 | } | |
1013 | ||
1014 | brcmf_sdiod_freezer_detach(sdiodev); | |
1015 | ||
1016 | /* Disable Function 2 */ | |
1017 | sdio_claim_host(sdiodev->func[2]); | |
1018 | sdio_disable_func(sdiodev->func[2]); | |
1019 | sdio_release_host(sdiodev->func[2]); | |
1020 | ||
1021 | /* Disable Function 1 */ | |
1022 | sdio_claim_host(sdiodev->func[1]); | |
1023 | sdio_disable_func(sdiodev->func[1]); | |
1024 | sdio_release_host(sdiodev->func[1]); | |
1025 | ||
1026 | sg_free_table(&sdiodev->sgtable); | |
1027 | sdiodev->sbwad = 0; | |
1028 | ||
1029 | pm_runtime_allow(sdiodev->func[1]->card->host->parent); | |
1030 | return 0; | |
1031 | } | |
1032 | ||
1033 | static void brcmf_sdiod_host_fixup(struct mmc_host *host) | |
1034 | { | |
1035 | /* runtime-pm powers off the device */ | |
1036 | pm_runtime_forbid(host->parent); | |
1037 | /* avoid removal detection upon resume */ | |
1038 | host->caps |= MMC_CAP_NONREMOVABLE; | |
1039 | } | |
1040 | ||
1041 | static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev) | |
1042 | { | |
1043 | int ret = 0; | |
1044 | ||
1045 | sdiodev->num_funcs = 2; | |
1046 | ||
1047 | sdio_claim_host(sdiodev->func[1]); | |
1048 | ||
1049 | ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE); | |
1050 | if (ret) { | |
1051 | brcmf_err("Failed to set F1 blocksize\n"); | |
1052 | sdio_release_host(sdiodev->func[1]); | |
1053 | goto out; | |
1054 | } | |
1055 | ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE); | |
1056 | if (ret) { | |
1057 | brcmf_err("Failed to set F2 blocksize\n"); | |
1058 | sdio_release_host(sdiodev->func[1]); | |
1059 | goto out; | |
1060 | } | |
1061 | ||
1062 | /* increase F2 timeout */ | |
1063 | sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY; | |
1064 | ||
1065 | /* Enable Function 1 */ | |
1066 | ret = sdio_enable_func(sdiodev->func[1]); | |
1067 | sdio_release_host(sdiodev->func[1]); | |
1068 | if (ret) { | |
1069 | brcmf_err("Failed to enable F1: err=%d\n", ret); | |
1070 | goto out; | |
1071 | } | |
1072 | ||
1073 | ret = brcmf_sdiod_freezer_attach(sdiodev); | |
1074 | if (ret) | |
1075 | goto out; | |
1076 | ||
1077 | /* try to attach to the target device */ | |
1078 | sdiodev->bus = brcmf_sdio_probe(sdiodev); | |
1079 | if (!sdiodev->bus) { | |
1080 | ret = -ENODEV; | |
1081 | goto out; | |
1082 | } | |
1083 | brcmf_sdiod_host_fixup(sdiodev->func[2]->card->host); | |
1084 | out: | |
1085 | if (ret) | |
1086 | brcmf_sdiod_remove(sdiodev); | |
1087 | ||
1088 | return ret; | |
1089 | } | |
1090 | ||
1091 | #define BRCMF_SDIO_DEVICE(dev_id) \ | |
1092 | {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)} | |
1093 | ||
1094 | /* devices we support, null terminated */ | |
1095 | static const struct sdio_device_id brcmf_sdmmc_ids[] = { | |
1096 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143), | |
1097 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241), | |
1098 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329), | |
1099 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330), | |
1100 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334), | |
1101 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340), | |
1102 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341), | |
1103 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362), | |
1104 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339), | |
1105 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4339), | |
1106 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430), | |
1107 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345), | |
1108 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43455), | |
1109 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354), | |
1110 | BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4356), | |
1111 | { /* end: all zeroes */ } | |
1112 | }; | |
1113 | MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids); | |
1114 | ||
1115 | ||
1116 | static void brcmf_sdiod_acpi_set_power_manageable(struct device *dev, | |
1117 | int val) | |
1118 | { | |
1119 | #if IS_ENABLED(CONFIG_ACPI) | |
1120 | struct acpi_device *adev; | |
1121 | ||
1122 | adev = ACPI_COMPANION(dev); | |
1123 | if (adev) | |
1124 | adev->flags.power_manageable = 0; | |
1125 | #endif | |
1126 | } | |
1127 | ||
1128 | static int brcmf_ops_sdio_probe(struct sdio_func *func, | |
1129 | const struct sdio_device_id *id) | |
1130 | { | |
1131 | int err; | |
1132 | struct brcmf_sdio_dev *sdiodev; | |
1133 | struct brcmf_bus *bus_if; | |
1134 | struct device *dev; | |
1135 | ||
1136 | brcmf_dbg(SDIO, "Enter\n"); | |
1137 | brcmf_dbg(SDIO, "Class=%x\n", func->class); | |
1138 | brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); | |
1139 | brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); | |
1140 | brcmf_dbg(SDIO, "Function#: %d\n", func->num); | |
1141 | ||
1142 | dev = &func->dev; | |
1143 | /* prohibit ACPI power management for this device */ | |
1144 | brcmf_sdiod_acpi_set_power_manageable(dev, 0); | |
1145 | ||
1146 | /* Consume func num 1 but dont do anything with it. */ | |
1147 | if (func->num == 1) | |
1148 | return 0; | |
1149 | ||
1150 | /* Ignore anything but func 2 */ | |
1151 | if (func->num != 2) | |
1152 | return -ENODEV; | |
1153 | ||
1154 | bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL); | |
1155 | if (!bus_if) | |
1156 | return -ENOMEM; | |
1157 | sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL); | |
1158 | if (!sdiodev) { | |
1159 | kfree(bus_if); | |
1160 | return -ENOMEM; | |
1161 | } | |
1162 | ||
1163 | /* store refs to functions used. mmc_card does | |
1164 | * not hold the F0 function pointer. | |
1165 | */ | |
1166 | sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL); | |
1167 | sdiodev->func[0]->num = 0; | |
1168 | sdiodev->func[1] = func->card->sdio_func[0]; | |
1169 | sdiodev->func[2] = func; | |
1170 | ||
1171 | sdiodev->bus_if = bus_if; | |
1172 | bus_if->bus_priv.sdio = sdiodev; | |
1173 | bus_if->proto_type = BRCMF_PROTO_BCDC; | |
1174 | dev_set_drvdata(&func->dev, bus_if); | |
1175 | dev_set_drvdata(&sdiodev->func[1]->dev, bus_if); | |
1176 | sdiodev->dev = &sdiodev->func[1]->dev; | |
1177 | ||
1178 | brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN); | |
1179 | ||
1180 | brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n"); | |
1181 | err = brcmf_sdiod_probe(sdiodev); | |
1182 | if (err) { | |
1183 | brcmf_err("F2 error, probe failed %d...\n", err); | |
1184 | goto fail; | |
1185 | } | |
1186 | ||
1187 | brcmf_dbg(SDIO, "F2 init completed...\n"); | |
1188 | return 0; | |
1189 | ||
1190 | fail: | |
1191 | dev_set_drvdata(&func->dev, NULL); | |
1192 | dev_set_drvdata(&sdiodev->func[1]->dev, NULL); | |
1193 | kfree(sdiodev->func[0]); | |
1194 | kfree(sdiodev); | |
1195 | kfree(bus_if); | |
1196 | return err; | |
1197 | } | |
1198 | ||
1199 | static void brcmf_ops_sdio_remove(struct sdio_func *func) | |
1200 | { | |
1201 | struct brcmf_bus *bus_if; | |
1202 | struct brcmf_sdio_dev *sdiodev; | |
1203 | ||
1204 | brcmf_dbg(SDIO, "Enter\n"); | |
1205 | brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); | |
1206 | brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); | |
1207 | brcmf_dbg(SDIO, "Function: %d\n", func->num); | |
1208 | ||
1209 | bus_if = dev_get_drvdata(&func->dev); | |
1210 | if (bus_if) { | |
1211 | sdiodev = bus_if->bus_priv.sdio; | |
1212 | ||
1213 | /* start by unregistering irqs */ | |
1214 | brcmf_sdiod_intr_unregister(sdiodev); | |
1215 | ||
1216 | if (func->num != 1) | |
1217 | return; | |
1218 | ||
1219 | /* only proceed with rest of cleanup if func 1 */ | |
1220 | brcmf_sdiod_remove(sdiodev); | |
1221 | ||
1222 | dev_set_drvdata(&sdiodev->func[1]->dev, NULL); | |
1223 | dev_set_drvdata(&sdiodev->func[2]->dev, NULL); | |
1224 | ||
1225 | kfree(bus_if); | |
1226 | kfree(sdiodev->func[0]); | |
1227 | kfree(sdiodev); | |
1228 | } | |
1229 | ||
1230 | brcmf_dbg(SDIO, "Exit\n"); | |
1231 | } | |
1232 | ||
1233 | void brcmf_sdio_wowl_config(struct device *dev, bool enabled) | |
1234 | { | |
1235 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); | |
1236 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
1237 | ||
1238 | brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled); | |
1239 | sdiodev->wowl_enabled = enabled; | |
1240 | } | |
1241 | ||
1242 | #ifdef CONFIG_PM_SLEEP | |
1243 | static int brcmf_ops_sdio_suspend(struct device *dev) | |
1244 | { | |
1245 | struct sdio_func *func; | |
1246 | struct brcmf_bus *bus_if; | |
1247 | struct brcmf_sdio_dev *sdiodev; | |
1248 | mmc_pm_flag_t sdio_flags; | |
1249 | ||
1250 | func = container_of(dev, struct sdio_func, dev); | |
1251 | brcmf_dbg(SDIO, "Enter: F%d\n", func->num); | |
1252 | if (func->num != SDIO_FUNC_1) | |
1253 | return 0; | |
1254 | ||
1255 | ||
1256 | bus_if = dev_get_drvdata(dev); | |
1257 | sdiodev = bus_if->bus_priv.sdio; | |
1258 | ||
1259 | brcmf_sdiod_freezer_on(sdiodev); | |
1260 | brcmf_sdio_wd_timer(sdiodev->bus, 0); | |
1261 | ||
1262 | sdio_flags = MMC_PM_KEEP_POWER; | |
1263 | if (sdiodev->wowl_enabled) { | |
1264 | if (sdiodev->settings->bus.sdio.oob_irq_supported) | |
1265 | enable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr); | |
1266 | else | |
1267 | sdio_flags |= MMC_PM_WAKE_SDIO_IRQ; | |
1268 | } | |
1269 | if (sdio_set_host_pm_flags(sdiodev->func[1], sdio_flags)) | |
1270 | brcmf_err("Failed to set pm_flags %x\n", sdio_flags); | |
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | static int brcmf_ops_sdio_resume(struct device *dev) | |
1275 | { | |
1276 | struct brcmf_bus *bus_if = dev_get_drvdata(dev); | |
1277 | struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; | |
1278 | struct sdio_func *func = container_of(dev, struct sdio_func, dev); | |
1279 | ||
1280 | brcmf_dbg(SDIO, "Enter: F%d\n", func->num); | |
1281 | if (func->num != SDIO_FUNC_2) | |
1282 | return 0; | |
1283 | ||
1284 | brcmf_sdiod_freezer_off(sdiodev); | |
1285 | return 0; | |
1286 | } | |
1287 | ||
1288 | static const struct dev_pm_ops brcmf_sdio_pm_ops = { | |
1289 | .suspend = brcmf_ops_sdio_suspend, | |
1290 | .resume = brcmf_ops_sdio_resume, | |
1291 | }; | |
1292 | #endif /* CONFIG_PM_SLEEP */ | |
1293 | ||
1294 | static struct sdio_driver brcmf_sdmmc_driver = { | |
1295 | .probe = brcmf_ops_sdio_probe, | |
1296 | .remove = brcmf_ops_sdio_remove, | |
1297 | .name = KBUILD_MODNAME, | |
1298 | .id_table = brcmf_sdmmc_ids, | |
1299 | .drv = { | |
1300 | .owner = THIS_MODULE, | |
1301 | #ifdef CONFIG_PM_SLEEP | |
1302 | .pm = &brcmf_sdio_pm_ops, | |
1303 | #endif /* CONFIG_PM_SLEEP */ | |
1304 | }, | |
1305 | }; | |
1306 | ||
1307 | void brcmf_sdio_register(void) | |
1308 | { | |
1309 | int ret; | |
1310 | ||
1311 | ret = sdio_register_driver(&brcmf_sdmmc_driver); | |
1312 | if (ret) | |
1313 | brcmf_err("sdio_register_driver failed: %d\n", ret); | |
1314 | } | |
1315 | ||
1316 | void brcmf_sdio_exit(void) | |
1317 | { | |
1318 | brcmf_dbg(SDIO, "Enter\n"); | |
1319 | ||
1320 | sdio_unregister_driver(&brcmf_sdmmc_driver); | |
1321 | } | |
1322 |