2 * Copyright (c) 2010 Broadcom Corporation
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.
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.
17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19 #include <linux/types.h>
20 #include <linux/netdevice.h>
21 #include <linux/mmc/sdio.h>
22 #include <linux/mmc/core.h>
23 #include <linux/mmc/sdio_func.h>
24 #include <linux/mmc/sdio_ids.h>
25 #include <linux/mmc/card.h>
26 #include <linux/suspend.h>
27 #include <linux/errno.h>
28 #include <linux/sched.h> /* request_irq() */
29 #include <linux/module.h>
30 #include <linux/platform_device.h>
31 #include <net/cfg80211.h>
34 #include <brcm_hw_ids.h>
35 #include <brcmu_utils.h>
36 #include <brcmu_wifi.h>
37 #include "sdio_host.h"
41 #define SDIO_VENDOR_ID_BROADCOM 0x02d0
43 #define DMA_ALIGN_MASK 0x03
45 #define SDIO_DEVICE_ID_BROADCOM_43241 0x4324
46 #define SDIO_DEVICE_ID_BROADCOM_4329 0x4329
47 #define SDIO_DEVICE_ID_BROADCOM_4330 0x4330
48 #define SDIO_DEVICE_ID_BROADCOM_4334 0x4334
50 #define SDIO_FUNC1_BLOCKSIZE 64
51 #define SDIO_FUNC2_BLOCKSIZE 512
53 /* devices we support, null terminated */
54 static const struct sdio_device_id brcmf_sdmmc_ids
[] = {
55 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM
, SDIO_DEVICE_ID_BROADCOM_43241
)},
56 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM
, SDIO_DEVICE_ID_BROADCOM_4329
)},
57 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM
, SDIO_DEVICE_ID_BROADCOM_4330
)},
58 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM
, SDIO_DEVICE_ID_BROADCOM_4334
)},
59 { /* end: all zeroes */ },
61 MODULE_DEVICE_TABLE(sdio
, brcmf_sdmmc_ids
);
63 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
64 static struct list_head oobirq_lh
;
65 struct brcmf_sdio_oobirq
{
68 struct list_head list
;
70 #endif /* CONFIG_BRCMFMAC_SDIO_OOB */
73 brcmf_pm_resume_error(struct brcmf_sdio_dev
*sdiodev
)
76 #ifdef CONFIG_PM_SLEEP
77 is_err
= atomic_read(&sdiodev
->suspend
);
83 brcmf_pm_resume_wait(struct brcmf_sdio_dev
*sdiodev
, wait_queue_head_t
*wq
)
85 #ifdef CONFIG_PM_SLEEP
87 while (atomic_read(&sdiodev
->suspend
) && retry
++ != 30)
88 wait_event_timeout(*wq
, false, HZ
/100);
92 static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev
*sdiodev
,
93 uint regaddr
, u8
*byte
)
95 struct sdio_func
*sdfunc
= sdiodev
->func
[0];
99 * Can only directly write to some F0 registers.
100 * Handle F2 enable/disable and Abort command
103 if (regaddr
== SDIO_CCCR_IOEx
) {
104 sdfunc
= sdiodev
->func
[2];
106 sdio_claim_host(sdfunc
);
107 if (*byte
& SDIO_FUNC_ENABLE_2
) {
108 /* Enable Function 2 */
109 err_ret
= sdio_enable_func(sdfunc
);
112 "enable F2 failed:%d\n",
115 /* Disable Function 2 */
116 err_ret
= sdio_disable_func(sdfunc
);
119 "Disable F2 failed:%d\n",
122 sdio_release_host(sdfunc
);
124 } else if ((regaddr
== SDIO_CCCR_ABORT
) ||
125 (regaddr
== SDIO_CCCR_IENx
)) {
126 sdfunc
= kmemdup(sdiodev
->func
[0], sizeof(struct sdio_func
),
131 sdio_claim_host(sdfunc
);
132 sdio_writeb(sdfunc
, *byte
, regaddr
, &err_ret
);
133 sdio_release_host(sdfunc
);
135 } else if (regaddr
< 0xF0) {
136 brcmf_dbg(ERROR
, "F0 Wr:0x%02x: write disallowed\n", regaddr
);
139 sdio_claim_host(sdfunc
);
140 sdio_f0_writeb(sdfunc
, *byte
, regaddr
, &err_ret
);
141 sdio_release_host(sdfunc
);
147 int brcmf_sdioh_request_byte(struct brcmf_sdio_dev
*sdiodev
, uint rw
, uint func
,
148 uint regaddr
, u8
*byte
)
152 brcmf_dbg(INFO
, "rw=%d, func=%d, addr=0x%05x\n", rw
, func
, regaddr
);
154 brcmf_pm_resume_wait(sdiodev
, &sdiodev
->request_byte_wait
);
155 if (brcmf_pm_resume_error(sdiodev
))
158 if (rw
&& func
== 0) {
159 /* handle F0 separately */
160 err_ret
= brcmf_sdioh_f0_write_byte(sdiodev
, regaddr
, byte
);
162 sdio_claim_host(sdiodev
->func
[func
]);
163 if (rw
) /* CMD52 Write */
164 sdio_writeb(sdiodev
->func
[func
], *byte
, regaddr
,
166 else if (func
== 0) {
167 *byte
= sdio_f0_readb(sdiodev
->func
[func
], regaddr
,
170 *byte
= sdio_readb(sdiodev
->func
[func
], regaddr
,
173 sdio_release_host(sdiodev
->func
[func
]);
177 brcmf_dbg(ERROR
, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
178 rw
? "write" : "read", func
, regaddr
, *byte
, err_ret
);
183 int brcmf_sdioh_request_word(struct brcmf_sdio_dev
*sdiodev
,
184 uint rw
, uint func
, uint addr
, u32
*word
,
190 brcmf_dbg(ERROR
, "Only CMD52 allowed to F0\n");
194 brcmf_dbg(INFO
, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
195 rw
, func
, addr
, nbytes
);
197 brcmf_pm_resume_wait(sdiodev
, &sdiodev
->request_word_wait
);
198 if (brcmf_pm_resume_error(sdiodev
))
200 /* Claim host controller */
201 sdio_claim_host(sdiodev
->func
[func
]);
203 if (rw
) { /* CMD52 Write */
205 sdio_writel(sdiodev
->func
[func
], *word
, addr
,
207 else if (nbytes
== 2)
208 sdio_writew(sdiodev
->func
[func
], (*word
& 0xFFFF),
211 brcmf_dbg(ERROR
, "Invalid nbytes: %d\n", nbytes
);
212 } else { /* CMD52 Read */
214 *word
= sdio_readl(sdiodev
->func
[func
], addr
, &err_ret
);
215 else if (nbytes
== 2)
216 *word
= sdio_readw(sdiodev
->func
[func
], addr
,
219 brcmf_dbg(ERROR
, "Invalid nbytes: %d\n", nbytes
);
222 /* Release host controller */
223 sdio_release_host(sdiodev
->func
[func
]);
226 brcmf_dbg(ERROR
, "Failed to %s word, Err: 0x%08x\n",
227 rw
? "write" : "read", err_ret
);
232 /* precondition: host controller is claimed */
234 brcmf_sdioh_request_data(struct brcmf_sdio_dev
*sdiodev
, uint write
, bool fifo
,
235 uint func
, uint addr
, struct sk_buff
*pkt
, uint pktlen
)
239 if ((write
) && (!fifo
)) {
240 err_ret
= sdio_memcpy_toio(sdiodev
->func
[func
], addr
,
241 ((u8
*) (pkt
->data
)), pktlen
);
243 err_ret
= sdio_memcpy_toio(sdiodev
->func
[func
], addr
,
244 ((u8
*) (pkt
->data
)), pktlen
);
246 err_ret
= sdio_readsb(sdiodev
->func
[func
],
247 ((u8
*) (pkt
->data
)), addr
, pktlen
);
249 err_ret
= sdio_memcpy_fromio(sdiodev
->func
[func
],
250 ((u8
*) (pkt
->data
)),
258 * This function takes a queue of packets. The packets on the queue
259 * are assumed to be properly aligned by the caller.
262 brcmf_sdioh_request_chain(struct brcmf_sdio_dev
*sdiodev
, uint fix_inc
,
263 uint write
, uint func
, uint addr
,
264 struct sk_buff_head
*pktq
)
266 bool fifo
= (fix_inc
== SDIOH_DATA_FIX
);
272 brcmf_dbg(TRACE
, "Enter\n");
274 brcmf_pm_resume_wait(sdiodev
, &sdiodev
->request_chain_wait
);
275 if (brcmf_pm_resume_error(sdiodev
))
278 /* Claim host controller */
279 sdio_claim_host(sdiodev
->func
[func
]);
281 skb_queue_walk(pktq
, pkt
) {
282 uint pkt_len
= pkt
->len
;
284 pkt_len
&= 0xFFFFFFFC;
286 err_ret
= brcmf_sdioh_request_data(sdiodev
, write
, fifo
, func
,
289 brcmf_dbg(ERROR
, "%s FAILED %p[%d], addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
290 write
? "TX" : "RX", pkt
, SGCount
, addr
,
293 brcmf_dbg(TRACE
, "%s xfr'd %p[%d], addr=0x%05x, len=%d\n",
294 write
? "TX" : "RX", pkt
, SGCount
, addr
,
303 /* Release host controller */
304 sdio_release_host(sdiodev
->func
[func
]);
306 brcmf_dbg(TRACE
, "Exit\n");
311 * This function takes a single DMA-able packet.
313 int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev
*sdiodev
,
314 uint fix_inc
, uint write
, uint func
, uint addr
,
319 bool fifo
= (fix_inc
== SDIOH_DATA_FIX
);
321 brcmf_dbg(TRACE
, "Enter\n");
327 brcmf_pm_resume_wait(sdiodev
, &sdiodev
->request_buffer_wait
);
328 if (brcmf_pm_resume_error(sdiodev
))
331 /* Claim host controller */
332 sdio_claim_host(sdiodev
->func
[func
]);
337 status
= brcmf_sdioh_request_data(sdiodev
, write
, fifo
, func
,
340 brcmf_dbg(ERROR
, "%s FAILED %p, addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
341 write
? "TX" : "RX", pkt
, addr
, pkt_len
, status
);
343 brcmf_dbg(TRACE
, "%s xfr'd %p, addr=0x%05x, len=%d\n",
344 write
? "TX" : "RX", pkt
, addr
, pkt_len
);
347 /* Release host controller */
348 sdio_release_host(sdiodev
->func
[func
]);
353 static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev
*sdiodev
, u32 regaddr
)
355 /* read 24 bits and return valid 17 bit addr */
357 u32 scratch
, regdata
;
359 u8
*ptr
= (u8
*)&scratch_le
;
361 for (i
= 0; i
< 3; i
++) {
362 regdata
= brcmf_sdio_regrl(sdiodev
, regaddr
, &ret
);
364 brcmf_dbg(ERROR
, "Can't read!\n");
366 *ptr
++ = (u8
) regdata
;
370 /* Only the lower 17-bits are valid */
371 scratch
= le32_to_cpu(scratch_le
);
372 scratch
&= 0x0001FFFF;
376 static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev
*sdiodev
)
382 brcmf_dbg(TRACE
, "\n");
384 /* Get the Card's common CIS address */
385 sdiodev
->func_cis_ptr
[0] = brcmf_sdioh_get_cisaddr(sdiodev
,
387 brcmf_dbg(INFO
, "Card's Common CIS Ptr = 0x%x\n",
388 sdiodev
->func_cis_ptr
[0]);
390 /* Get the Card's function CIS (for each function) */
391 for (fbraddr
= SDIO_FBR_BASE(1), func
= 1;
392 func
<= sdiodev
->num_funcs
; func
++, fbraddr
+= SDIOD_FBR_SIZE
) {
393 sdiodev
->func_cis_ptr
[func
] =
394 brcmf_sdioh_get_cisaddr(sdiodev
, SDIO_FBR_CIS
+ fbraddr
);
395 brcmf_dbg(INFO
, "Function %d CIS Ptr = 0x%x\n",
396 func
, sdiodev
->func_cis_ptr
[func
]);
399 /* Enable Function 1 */
400 sdio_claim_host(sdiodev
->func
[1]);
401 err_ret
= sdio_enable_func(sdiodev
->func
[1]);
402 sdio_release_host(sdiodev
->func
[1]);
404 brcmf_dbg(ERROR
, "Failed to enable F1 Err: 0x%08x\n", err_ret
);
410 * Public entry points & extern's
412 int brcmf_sdioh_attach(struct brcmf_sdio_dev
*sdiodev
)
416 brcmf_dbg(TRACE
, "\n");
418 sdiodev
->num_funcs
= 2;
420 sdio_claim_host(sdiodev
->func
[1]);
421 err_ret
= sdio_set_block_size(sdiodev
->func
[1], SDIO_FUNC1_BLOCKSIZE
);
422 sdio_release_host(sdiodev
->func
[1]);
424 brcmf_dbg(ERROR
, "Failed to set F1 blocksize\n");
428 sdio_claim_host(sdiodev
->func
[2]);
429 err_ret
= sdio_set_block_size(sdiodev
->func
[2], SDIO_FUNC2_BLOCKSIZE
);
430 sdio_release_host(sdiodev
->func
[2]);
432 brcmf_dbg(ERROR
, "Failed to set F2 blocksize\n");
436 brcmf_sdioh_enablefuncs(sdiodev
);
439 brcmf_dbg(TRACE
, "Done\n");
443 void brcmf_sdioh_detach(struct brcmf_sdio_dev
*sdiodev
)
445 brcmf_dbg(TRACE
, "\n");
447 /* Disable Function 2 */
448 sdio_claim_host(sdiodev
->func
[2]);
449 sdio_disable_func(sdiodev
->func
[2]);
450 sdio_release_host(sdiodev
->func
[2]);
452 /* Disable Function 1 */
453 sdio_claim_host(sdiodev
->func
[1]);
454 sdio_disable_func(sdiodev
->func
[1]);
455 sdio_release_host(sdiodev
->func
[1]);
459 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
460 static int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev
*sdiodev
)
462 struct brcmf_sdio_oobirq
*oobirq_entry
;
464 if (list_empty(&oobirq_lh
)) {
465 brcmf_dbg(ERROR
, "no valid oob irq resource\n");
469 oobirq_entry
= list_first_entry(&oobirq_lh
, struct brcmf_sdio_oobirq
,
472 sdiodev
->irq
= oobirq_entry
->irq
;
473 sdiodev
->irq_flags
= oobirq_entry
->flags
;
474 list_del(&oobirq_entry
->list
);
480 static inline int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev
*sdiodev
)
484 #endif /* CONFIG_BRCMFMAC_SDIO_OOB */
486 static int brcmf_ops_sdio_probe(struct sdio_func
*func
,
487 const struct sdio_device_id
*id
)
490 struct brcmf_sdio_dev
*sdiodev
;
491 struct brcmf_bus
*bus_if
;
493 brcmf_dbg(TRACE
, "Enter\n");
494 brcmf_dbg(TRACE
, "func->class=%x\n", func
->class);
495 brcmf_dbg(TRACE
, "sdio_vendor: 0x%04x\n", func
->vendor
);
496 brcmf_dbg(TRACE
, "sdio_device: 0x%04x\n", func
->device
);
497 brcmf_dbg(TRACE
, "Function#: 0x%04x\n", func
->num
);
499 if (func
->num
== 1) {
500 if (dev_get_drvdata(&func
->card
->dev
)) {
501 brcmf_dbg(ERROR
, "card private drvdata occupied\n");
504 bus_if
= kzalloc(sizeof(struct brcmf_bus
), GFP_KERNEL
);
507 sdiodev
= kzalloc(sizeof(struct brcmf_sdio_dev
), GFP_KERNEL
);
512 sdiodev
->func
[0] = func
;
513 sdiodev
->func
[1] = func
;
514 sdiodev
->bus_if
= bus_if
;
515 bus_if
->bus_priv
.sdio
= sdiodev
;
516 bus_if
->type
= SDIO_BUS
;
517 bus_if
->align
= BRCMF_SDALIGN
;
518 dev_set_drvdata(&func
->card
->dev
, sdiodev
);
520 atomic_set(&sdiodev
->suspend
, false);
521 init_waitqueue_head(&sdiodev
->request_byte_wait
);
522 init_waitqueue_head(&sdiodev
->request_word_wait
);
523 init_waitqueue_head(&sdiodev
->request_chain_wait
);
524 init_waitqueue_head(&sdiodev
->request_buffer_wait
);
527 if (func
->num
== 2) {
528 sdiodev
= dev_get_drvdata(&func
->card
->dev
);
529 if ((!sdiodev
) || (sdiodev
->func
[1]->card
!= func
->card
))
532 ret
= brcmf_sdio_getintrcfg(sdiodev
);
535 sdiodev
->func
[2] = func
;
537 bus_if
= sdiodev
->bus_if
;
538 sdiodev
->dev
= &func
->dev
;
539 dev_set_drvdata(&func
->dev
, bus_if
);
541 brcmf_dbg(TRACE
, "F2 found, calling brcmf_sdio_probe...\n");
542 ret
= brcmf_sdio_probe(sdiodev
);
548 static void brcmf_ops_sdio_remove(struct sdio_func
*func
)
550 struct brcmf_bus
*bus_if
;
551 struct brcmf_sdio_dev
*sdiodev
;
552 brcmf_dbg(TRACE
, "Enter\n");
553 brcmf_dbg(INFO
, "func->class=%x\n", func
->class);
554 brcmf_dbg(INFO
, "sdio_vendor: 0x%04x\n", func
->vendor
);
555 brcmf_dbg(INFO
, "sdio_device: 0x%04x\n", func
->device
);
556 brcmf_dbg(INFO
, "Function#: 0x%04x\n", func
->num
);
558 if (func
->num
== 2) {
559 bus_if
= dev_get_drvdata(&func
->dev
);
560 sdiodev
= bus_if
->bus_priv
.sdio
;
561 brcmf_dbg(TRACE
, "F2 found, calling brcmf_sdio_remove...\n");
562 brcmf_sdio_remove(sdiodev
);
563 dev_set_drvdata(&func
->card
->dev
, NULL
);
564 dev_set_drvdata(&func
->dev
, NULL
);
570 #ifdef CONFIG_PM_SLEEP
571 static int brcmf_sdio_suspend(struct device
*dev
)
573 mmc_pm_flag_t sdio_flags
;
574 struct sdio_func
*func
= dev_to_sdio_func(dev
);
575 struct brcmf_sdio_dev
*sdiodev
= dev_get_drvdata(&func
->card
->dev
);
578 brcmf_dbg(TRACE
, "\n");
580 atomic_set(&sdiodev
->suspend
, true);
582 sdio_flags
= sdio_get_host_pm_caps(sdiodev
->func
[1]);
583 if (!(sdio_flags
& MMC_PM_KEEP_POWER
)) {
584 brcmf_dbg(ERROR
, "Host can't keep power while suspended\n");
588 ret
= sdio_set_host_pm_flags(sdiodev
->func
[1], MMC_PM_KEEP_POWER
);
590 brcmf_dbg(ERROR
, "Failed to set pm_flags\n");
594 brcmf_sdio_wdtmr_enable(sdiodev
, false);
599 static int brcmf_sdio_resume(struct device
*dev
)
601 struct sdio_func
*func
= dev_to_sdio_func(dev
);
602 struct brcmf_sdio_dev
*sdiodev
= dev_get_drvdata(&func
->card
->dev
);
604 brcmf_sdio_wdtmr_enable(sdiodev
, true);
605 atomic_set(&sdiodev
->suspend
, false);
609 static const struct dev_pm_ops brcmf_sdio_pm_ops
= {
610 .suspend
= brcmf_sdio_suspend
,
611 .resume
= brcmf_sdio_resume
,
613 #endif /* CONFIG_PM_SLEEP */
615 static struct sdio_driver brcmf_sdmmc_driver
= {
616 .probe
= brcmf_ops_sdio_probe
,
617 .remove
= brcmf_ops_sdio_remove
,
619 .id_table
= brcmf_sdmmc_ids
,
620 #ifdef CONFIG_PM_SLEEP
622 .pm
= &brcmf_sdio_pm_ops
,
624 #endif /* CONFIG_PM_SLEEP */
627 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
628 static int brcmf_sdio_pd_probe(struct platform_device
*pdev
)
630 struct resource
*res
;
631 struct brcmf_sdio_oobirq
*oobirq_entry
;
634 INIT_LIST_HEAD(&oobirq_lh
);
637 res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, i
);
641 oobirq_entry
= kzalloc(sizeof(struct brcmf_sdio_oobirq
),
645 oobirq_entry
->irq
= res
->start
;
646 oobirq_entry
->flags
= res
->flags
& IRQF_TRIGGER_MASK
;
647 list_add_tail(&oobirq_entry
->list
, &oobirq_lh
);
652 ret
= sdio_register_driver(&brcmf_sdmmc_driver
);
655 brcmf_dbg(ERROR
, "sdio_register_driver failed: %d\n", ret
);
660 static struct platform_driver brcmf_sdio_pd
= {
661 .probe
= brcmf_sdio_pd_probe
,
663 .name
= "brcmf_sdio_pd"
667 void brcmf_sdio_exit(void)
669 brcmf_dbg(TRACE
, "Enter\n");
671 sdio_unregister_driver(&brcmf_sdmmc_driver
);
673 platform_driver_unregister(&brcmf_sdio_pd
);
676 void brcmf_sdio_init(void)
680 brcmf_dbg(TRACE
, "Enter\n");
682 ret
= platform_driver_register(&brcmf_sdio_pd
);
685 brcmf_dbg(ERROR
, "platform_driver_register failed: %d\n", ret
);
688 void brcmf_sdio_exit(void)
690 brcmf_dbg(TRACE
, "Enter\n");
692 sdio_unregister_driver(&brcmf_sdmmc_driver
);
695 void brcmf_sdio_init(void)
699 brcmf_dbg(TRACE
, "Enter\n");
701 ret
= sdio_register_driver(&brcmf_sdmmc_driver
);
704 brcmf_dbg(ERROR
, "sdio_register_driver failed: %d\n", ret
);
706 #endif /* CONFIG_BRCMFMAC_SDIO_OOB */