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_4329 0x4329
46 #define SDIO_DEVICE_ID_BROADCOM_4330 0x4330
47 #define SDIO_DEVICE_ID_BROADCOM_4334 0x4334
49 #define SDIO_FUNC1_BLOCKSIZE 64
50 #define SDIO_FUNC2_BLOCKSIZE 512
52 /* devices we support, null terminated */
53 static const struct sdio_device_id brcmf_sdmmc_ids
[] = {
54 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM
, SDIO_DEVICE_ID_BROADCOM_4329
)},
55 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM
, SDIO_DEVICE_ID_BROADCOM_4330
)},
56 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM
, SDIO_DEVICE_ID_BROADCOM_4334
)},
57 { /* end: all zeroes */ },
59 MODULE_DEVICE_TABLE(sdio
, brcmf_sdmmc_ids
);
61 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
62 static struct list_head oobirq_lh
;
63 struct brcmf_sdio_oobirq
{
66 struct list_head list
;
68 #endif /* CONFIG_BRCMFMAC_SDIO_OOB */
71 brcmf_pm_resume_error(struct brcmf_sdio_dev
*sdiodev
)
74 #ifdef CONFIG_PM_SLEEP
75 is_err
= atomic_read(&sdiodev
->suspend
);
81 brcmf_pm_resume_wait(struct brcmf_sdio_dev
*sdiodev
, wait_queue_head_t
*wq
)
83 #ifdef CONFIG_PM_SLEEP
85 while (atomic_read(&sdiodev
->suspend
) && retry
++ != 30)
86 wait_event_timeout(*wq
, false, HZ
/100);
90 static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev
*sdiodev
,
91 uint regaddr
, u8
*byte
)
93 struct sdio_func
*sdfunc
= sdiodev
->func
[0];
97 * Can only directly write to some F0 registers.
98 * Handle F2 enable/disable and Abort command
101 if (regaddr
== SDIO_CCCR_IOEx
) {
102 sdfunc
= sdiodev
->func
[2];
104 sdio_claim_host(sdfunc
);
105 if (*byte
& SDIO_FUNC_ENABLE_2
) {
106 /* Enable Function 2 */
107 err_ret
= sdio_enable_func(sdfunc
);
110 "enable F2 failed:%d\n",
113 /* Disable Function 2 */
114 err_ret
= sdio_disable_func(sdfunc
);
117 "Disable F2 failed:%d\n",
120 sdio_release_host(sdfunc
);
122 } else if ((regaddr
== SDIO_CCCR_ABORT
) ||
123 (regaddr
== SDIO_CCCR_IENx
)) {
124 sdfunc
= kmemdup(sdiodev
->func
[0], sizeof(struct sdio_func
),
129 sdio_claim_host(sdfunc
);
130 sdio_writeb(sdfunc
, *byte
, regaddr
, &err_ret
);
131 sdio_release_host(sdfunc
);
133 } else if (regaddr
< 0xF0) {
134 brcmf_dbg(ERROR
, "F0 Wr:0x%02x: write disallowed\n", regaddr
);
137 sdio_claim_host(sdfunc
);
138 sdio_f0_writeb(sdfunc
, *byte
, regaddr
, &err_ret
);
139 sdio_release_host(sdfunc
);
145 int brcmf_sdioh_request_byte(struct brcmf_sdio_dev
*sdiodev
, uint rw
, uint func
,
146 uint regaddr
, u8
*byte
)
150 brcmf_dbg(INFO
, "rw=%d, func=%d, addr=0x%05x\n", rw
, func
, regaddr
);
152 brcmf_pm_resume_wait(sdiodev
, &sdiodev
->request_byte_wait
);
153 if (brcmf_pm_resume_error(sdiodev
))
156 if (rw
&& func
== 0) {
157 /* handle F0 separately */
158 err_ret
= brcmf_sdioh_f0_write_byte(sdiodev
, regaddr
, byte
);
160 sdio_claim_host(sdiodev
->func
[func
]);
161 if (rw
) /* CMD52 Write */
162 sdio_writeb(sdiodev
->func
[func
], *byte
, regaddr
,
164 else if (func
== 0) {
165 *byte
= sdio_f0_readb(sdiodev
->func
[func
], regaddr
,
168 *byte
= sdio_readb(sdiodev
->func
[func
], regaddr
,
171 sdio_release_host(sdiodev
->func
[func
]);
175 brcmf_dbg(ERROR
, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
176 rw
? "write" : "read", func
, regaddr
, *byte
, err_ret
);
181 int brcmf_sdioh_request_word(struct brcmf_sdio_dev
*sdiodev
,
182 uint rw
, uint func
, uint addr
, u32
*word
,
188 brcmf_dbg(ERROR
, "Only CMD52 allowed to F0\n");
192 brcmf_dbg(INFO
, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
193 rw
, func
, addr
, nbytes
);
195 brcmf_pm_resume_wait(sdiodev
, &sdiodev
->request_word_wait
);
196 if (brcmf_pm_resume_error(sdiodev
))
198 /* Claim host controller */
199 sdio_claim_host(sdiodev
->func
[func
]);
201 if (rw
) { /* CMD52 Write */
203 sdio_writel(sdiodev
->func
[func
], *word
, addr
,
205 else if (nbytes
== 2)
206 sdio_writew(sdiodev
->func
[func
], (*word
& 0xFFFF),
209 brcmf_dbg(ERROR
, "Invalid nbytes: %d\n", nbytes
);
210 } else { /* CMD52 Read */
212 *word
= sdio_readl(sdiodev
->func
[func
], addr
, &err_ret
);
213 else if (nbytes
== 2)
214 *word
= sdio_readw(sdiodev
->func
[func
], addr
,
217 brcmf_dbg(ERROR
, "Invalid nbytes: %d\n", nbytes
);
220 /* Release host controller */
221 sdio_release_host(sdiodev
->func
[func
]);
224 brcmf_dbg(ERROR
, "Failed to %s word, Err: 0x%08x\n",
225 rw
? "write" : "read", err_ret
);
230 /* precondition: host controller is claimed */
232 brcmf_sdioh_request_data(struct brcmf_sdio_dev
*sdiodev
, uint write
, bool fifo
,
233 uint func
, uint addr
, struct sk_buff
*pkt
, uint pktlen
)
237 if ((write
) && (!fifo
)) {
238 err_ret
= sdio_memcpy_toio(sdiodev
->func
[func
], addr
,
239 ((u8
*) (pkt
->data
)), pktlen
);
241 err_ret
= sdio_memcpy_toio(sdiodev
->func
[func
], addr
,
242 ((u8
*) (pkt
->data
)), pktlen
);
244 err_ret
= sdio_readsb(sdiodev
->func
[func
],
245 ((u8
*) (pkt
->data
)), addr
, pktlen
);
247 err_ret
= sdio_memcpy_fromio(sdiodev
->func
[func
],
248 ((u8
*) (pkt
->data
)),
256 * This function takes a queue of packets. The packets on the queue
257 * are assumed to be properly aligned by the caller.
260 brcmf_sdioh_request_chain(struct brcmf_sdio_dev
*sdiodev
, uint fix_inc
,
261 uint write
, uint func
, uint addr
,
262 struct sk_buff_head
*pktq
)
264 bool fifo
= (fix_inc
== SDIOH_DATA_FIX
);
270 brcmf_dbg(TRACE
, "Enter\n");
272 brcmf_pm_resume_wait(sdiodev
, &sdiodev
->request_chain_wait
);
273 if (brcmf_pm_resume_error(sdiodev
))
276 /* Claim host controller */
277 sdio_claim_host(sdiodev
->func
[func
]);
279 skb_queue_walk(pktq
, pkt
) {
280 uint pkt_len
= pkt
->len
;
282 pkt_len
&= 0xFFFFFFFC;
284 err_ret
= brcmf_sdioh_request_data(sdiodev
, write
, fifo
, func
,
287 brcmf_dbg(ERROR
, "%s FAILED %p[%d], addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
288 write
? "TX" : "RX", pkt
, SGCount
, addr
,
291 brcmf_dbg(TRACE
, "%s xfr'd %p[%d], addr=0x%05x, len=%d\n",
292 write
? "TX" : "RX", pkt
, SGCount
, addr
,
301 /* Release host controller */
302 sdio_release_host(sdiodev
->func
[func
]);
304 brcmf_dbg(TRACE
, "Exit\n");
309 * This function takes a single DMA-able packet.
311 int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev
*sdiodev
,
312 uint fix_inc
, uint write
, uint func
, uint addr
,
317 bool fifo
= (fix_inc
== SDIOH_DATA_FIX
);
319 brcmf_dbg(TRACE
, "Enter\n");
325 brcmf_pm_resume_wait(sdiodev
, &sdiodev
->request_buffer_wait
);
326 if (brcmf_pm_resume_error(sdiodev
))
329 /* Claim host controller */
330 sdio_claim_host(sdiodev
->func
[func
]);
335 status
= brcmf_sdioh_request_data(sdiodev
, write
, fifo
, func
,
338 brcmf_dbg(ERROR
, "%s FAILED %p, addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
339 write
? "TX" : "RX", pkt
, addr
, pkt_len
, status
);
341 brcmf_dbg(TRACE
, "%s xfr'd %p, addr=0x%05x, len=%d\n",
342 write
? "TX" : "RX", pkt
, addr
, pkt_len
);
345 /* Release host controller */
346 sdio_release_host(sdiodev
->func
[func
]);
351 static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev
*sdiodev
, u32 regaddr
)
353 /* read 24 bits and return valid 17 bit addr */
355 u32 scratch
, regdata
;
357 u8
*ptr
= (u8
*)&scratch_le
;
359 for (i
= 0; i
< 3; i
++) {
360 regdata
= brcmf_sdio_regrl(sdiodev
, regaddr
, &ret
);
362 brcmf_dbg(ERROR
, "Can't read!\n");
364 *ptr
++ = (u8
) regdata
;
368 /* Only the lower 17-bits are valid */
369 scratch
= le32_to_cpu(scratch_le
);
370 scratch
&= 0x0001FFFF;
374 static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev
*sdiodev
)
380 brcmf_dbg(TRACE
, "\n");
382 /* Get the Card's common CIS address */
383 sdiodev
->func_cis_ptr
[0] = brcmf_sdioh_get_cisaddr(sdiodev
,
385 brcmf_dbg(INFO
, "Card's Common CIS Ptr = 0x%x\n",
386 sdiodev
->func_cis_ptr
[0]);
388 /* Get the Card's function CIS (for each function) */
389 for (fbraddr
= SDIO_FBR_BASE(1), func
= 1;
390 func
<= sdiodev
->num_funcs
; func
++, fbraddr
+= SDIOD_FBR_SIZE
) {
391 sdiodev
->func_cis_ptr
[func
] =
392 brcmf_sdioh_get_cisaddr(sdiodev
, SDIO_FBR_CIS
+ fbraddr
);
393 brcmf_dbg(INFO
, "Function %d CIS Ptr = 0x%x\n",
394 func
, sdiodev
->func_cis_ptr
[func
]);
397 /* Enable Function 1 */
398 sdio_claim_host(sdiodev
->func
[1]);
399 err_ret
= sdio_enable_func(sdiodev
->func
[1]);
400 sdio_release_host(sdiodev
->func
[1]);
402 brcmf_dbg(ERROR
, "Failed to enable F1 Err: 0x%08x\n", err_ret
);
408 * Public entry points & extern's
410 int brcmf_sdioh_attach(struct brcmf_sdio_dev
*sdiodev
)
414 brcmf_dbg(TRACE
, "\n");
416 sdiodev
->num_funcs
= 2;
418 sdio_claim_host(sdiodev
->func
[1]);
419 err_ret
= sdio_set_block_size(sdiodev
->func
[1], SDIO_FUNC1_BLOCKSIZE
);
420 sdio_release_host(sdiodev
->func
[1]);
422 brcmf_dbg(ERROR
, "Failed to set F1 blocksize\n");
426 sdio_claim_host(sdiodev
->func
[2]);
427 err_ret
= sdio_set_block_size(sdiodev
->func
[2], SDIO_FUNC2_BLOCKSIZE
);
428 sdio_release_host(sdiodev
->func
[2]);
430 brcmf_dbg(ERROR
, "Failed to set F2 blocksize\n");
434 brcmf_sdioh_enablefuncs(sdiodev
);
437 brcmf_dbg(TRACE
, "Done\n");
441 void brcmf_sdioh_detach(struct brcmf_sdio_dev
*sdiodev
)
443 brcmf_dbg(TRACE
, "\n");
445 /* Disable Function 2 */
446 sdio_claim_host(sdiodev
->func
[2]);
447 sdio_disable_func(sdiodev
->func
[2]);
448 sdio_release_host(sdiodev
->func
[2]);
450 /* Disable Function 1 */
451 sdio_claim_host(sdiodev
->func
[1]);
452 sdio_disable_func(sdiodev
->func
[1]);
453 sdio_release_host(sdiodev
->func
[1]);
457 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
458 static int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev
*sdiodev
)
460 struct brcmf_sdio_oobirq
*oobirq_entry
;
462 if (list_empty(&oobirq_lh
)) {
463 brcmf_dbg(ERROR
, "no valid oob irq resource\n");
467 oobirq_entry
= list_first_entry(&oobirq_lh
, struct brcmf_sdio_oobirq
,
470 sdiodev
->irq
= oobirq_entry
->irq
;
471 sdiodev
->irq_flags
= oobirq_entry
->flags
;
472 list_del(&oobirq_entry
->list
);
478 static inline int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev
*sdiodev
)
482 #endif /* CONFIG_BRCMFMAC_SDIO_OOB */
484 static int brcmf_ops_sdio_probe(struct sdio_func
*func
,
485 const struct sdio_device_id
*id
)
488 struct brcmf_sdio_dev
*sdiodev
;
489 struct brcmf_bus
*bus_if
;
491 brcmf_dbg(TRACE
, "Enter\n");
492 brcmf_dbg(TRACE
, "func->class=%x\n", func
->class);
493 brcmf_dbg(TRACE
, "sdio_vendor: 0x%04x\n", func
->vendor
);
494 brcmf_dbg(TRACE
, "sdio_device: 0x%04x\n", func
->device
);
495 brcmf_dbg(TRACE
, "Function#: 0x%04x\n", func
->num
);
497 if (func
->num
== 1) {
498 if (dev_get_drvdata(&func
->card
->dev
)) {
499 brcmf_dbg(ERROR
, "card private drvdata occupied\n");
502 bus_if
= kzalloc(sizeof(struct brcmf_bus
), GFP_KERNEL
);
505 sdiodev
= kzalloc(sizeof(struct brcmf_sdio_dev
), GFP_KERNEL
);
510 sdiodev
->func
[0] = func
;
511 sdiodev
->func
[1] = func
;
512 sdiodev
->bus_if
= bus_if
;
513 bus_if
->bus_priv
.sdio
= sdiodev
;
514 bus_if
->type
= SDIO_BUS
;
515 bus_if
->align
= BRCMF_SDALIGN
;
516 dev_set_drvdata(&func
->card
->dev
, sdiodev
);
518 atomic_set(&sdiodev
->suspend
, false);
519 init_waitqueue_head(&sdiodev
->request_byte_wait
);
520 init_waitqueue_head(&sdiodev
->request_word_wait
);
521 init_waitqueue_head(&sdiodev
->request_chain_wait
);
522 init_waitqueue_head(&sdiodev
->request_buffer_wait
);
525 if (func
->num
== 2) {
526 sdiodev
= dev_get_drvdata(&func
->card
->dev
);
527 if ((!sdiodev
) || (sdiodev
->func
[1]->card
!= func
->card
))
530 ret
= brcmf_sdio_getintrcfg(sdiodev
);
533 sdiodev
->func
[2] = func
;
535 bus_if
= sdiodev
->bus_if
;
536 sdiodev
->dev
= &func
->dev
;
537 dev_set_drvdata(&func
->dev
, bus_if
);
539 brcmf_dbg(TRACE
, "F2 found, calling brcmf_sdio_probe...\n");
540 ret
= brcmf_sdio_probe(sdiodev
);
546 static void brcmf_ops_sdio_remove(struct sdio_func
*func
)
548 struct brcmf_bus
*bus_if
;
549 struct brcmf_sdio_dev
*sdiodev
;
550 brcmf_dbg(TRACE
, "Enter\n");
551 brcmf_dbg(INFO
, "func->class=%x\n", func
->class);
552 brcmf_dbg(INFO
, "sdio_vendor: 0x%04x\n", func
->vendor
);
553 brcmf_dbg(INFO
, "sdio_device: 0x%04x\n", func
->device
);
554 brcmf_dbg(INFO
, "Function#: 0x%04x\n", func
->num
);
556 if (func
->num
== 2) {
557 bus_if
= dev_get_drvdata(&func
->dev
);
558 sdiodev
= bus_if
->bus_priv
.sdio
;
559 brcmf_dbg(TRACE
, "F2 found, calling brcmf_sdio_remove...\n");
560 brcmf_sdio_remove(sdiodev
);
561 dev_set_drvdata(&func
->card
->dev
, NULL
);
562 dev_set_drvdata(&func
->dev
, NULL
);
568 #ifdef CONFIG_PM_SLEEP
569 static int brcmf_sdio_suspend(struct device
*dev
)
571 mmc_pm_flag_t sdio_flags
;
572 struct sdio_func
*func
= dev_to_sdio_func(dev
);
573 struct brcmf_sdio_dev
*sdiodev
= dev_get_drvdata(&func
->card
->dev
);
576 brcmf_dbg(TRACE
, "\n");
578 atomic_set(&sdiodev
->suspend
, true);
580 sdio_flags
= sdio_get_host_pm_caps(sdiodev
->func
[1]);
581 if (!(sdio_flags
& MMC_PM_KEEP_POWER
)) {
582 brcmf_dbg(ERROR
, "Host can't keep power while suspended\n");
586 ret
= sdio_set_host_pm_flags(sdiodev
->func
[1], MMC_PM_KEEP_POWER
);
588 brcmf_dbg(ERROR
, "Failed to set pm_flags\n");
592 brcmf_sdio_wdtmr_enable(sdiodev
, false);
597 static int brcmf_sdio_resume(struct device
*dev
)
599 struct sdio_func
*func
= dev_to_sdio_func(dev
);
600 struct brcmf_sdio_dev
*sdiodev
= dev_get_drvdata(&func
->card
->dev
);
602 brcmf_sdio_wdtmr_enable(sdiodev
, true);
603 atomic_set(&sdiodev
->suspend
, false);
607 static const struct dev_pm_ops brcmf_sdio_pm_ops
= {
608 .suspend
= brcmf_sdio_suspend
,
609 .resume
= brcmf_sdio_resume
,
611 #endif /* CONFIG_PM_SLEEP */
613 static struct sdio_driver brcmf_sdmmc_driver
= {
614 .probe
= brcmf_ops_sdio_probe
,
615 .remove
= brcmf_ops_sdio_remove
,
617 .id_table
= brcmf_sdmmc_ids
,
618 #ifdef CONFIG_PM_SLEEP
620 .pm
= &brcmf_sdio_pm_ops
,
622 #endif /* CONFIG_PM_SLEEP */
625 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
626 static int brcmf_sdio_pd_probe(struct platform_device
*pdev
)
628 struct resource
*res
;
629 struct brcmf_sdio_oobirq
*oobirq_entry
;
632 INIT_LIST_HEAD(&oobirq_lh
);
635 res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, i
);
639 oobirq_entry
= kzalloc(sizeof(struct brcmf_sdio_oobirq
),
643 oobirq_entry
->irq
= res
->start
;
644 oobirq_entry
->flags
= res
->flags
& IRQF_TRIGGER_MASK
;
645 list_add_tail(&oobirq_entry
->list
, &oobirq_lh
);
650 ret
= sdio_register_driver(&brcmf_sdmmc_driver
);
653 brcmf_dbg(ERROR
, "sdio_register_driver failed: %d\n", ret
);
658 static struct platform_driver brcmf_sdio_pd
= {
659 .probe
= brcmf_sdio_pd_probe
,
661 .name
= "brcmf_sdio_pd"
665 void brcmf_sdio_exit(void)
667 brcmf_dbg(TRACE
, "Enter\n");
669 sdio_unregister_driver(&brcmf_sdmmc_driver
);
671 platform_driver_unregister(&brcmf_sdio_pd
);
674 void brcmf_sdio_init(void)
678 brcmf_dbg(TRACE
, "Enter\n");
680 ret
= platform_driver_register(&brcmf_sdio_pd
);
683 brcmf_dbg(ERROR
, "platform_driver_register failed: %d\n", ret
);
686 void brcmf_sdio_exit(void)
688 brcmf_dbg(TRACE
, "Enter\n");
690 sdio_unregister_driver(&brcmf_sdmmc_driver
);
693 void brcmf_sdio_init(void)
697 brcmf_dbg(TRACE
, "Enter\n");
699 ret
= sdio_register_driver(&brcmf_sdmmc_driver
);
702 brcmf_dbg(ERROR
, "sdio_register_driver failed: %d\n", ret
);
704 #endif /* CONFIG_BRCMFMAC_SDIO_OOB */