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.
16 /* ****************** SDIO CARD Interface Functions **************************/
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/scatterlist.h>
25 #include <linux/mmc/sdio.h>
26 #include <linux/mmc/core.h>
27 #include <linux/mmc/sdio_func.h>
28 #include <linux/mmc/card.h>
29 #include <linux/mmc/host.h>
30 #include <linux/pm_runtime.h>
31 #include <linux/suspend.h>
32 #include <linux/errno.h>
33 #include <linux/module.h>
34 #include <linux/acpi.h>
35 #include <net/cfg80211.h>
38 #include <brcm_hw_ids.h>
39 #include <brcmu_utils.h>
40 #include <brcmu_wifi.h>
41 #include <chipcommon.h>
50 #define SDIOH_API_ACCESS_RETRY_LIMIT 2
52 #define DMA_ALIGN_MASK 0x03
54 #define SDIO_FUNC1_BLOCKSIZE 64
55 #define SDIO_FUNC2_BLOCKSIZE 512
56 /* Maximum milliseconds to wait for F2 to come up */
57 #define SDIO_WAIT_F2RDY 3000
59 #define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */
61 struct brcmf_sdiod_freezer
{
63 atomic_t thread_count
;
65 wait_queue_head_t thread_freeze
;
66 struct completion resumed
;
69 static irqreturn_t
brcmf_sdiod_oob_irqhandler(int irq
, void *dev_id
)
71 struct brcmf_bus
*bus_if
= dev_get_drvdata(dev_id
);
72 struct brcmf_sdio_dev
*sdiodev
= bus_if
->bus_priv
.sdio
;
74 brcmf_dbg(INTR
, "OOB intr triggered\n");
76 /* out-of-band interrupt is level-triggered which won't
77 * be cleared until dpc
79 if (sdiodev
->irq_en
) {
80 disable_irq_nosync(irq
);
81 sdiodev
->irq_en
= false;
84 brcmf_sdio_isr(sdiodev
->bus
);
89 static void brcmf_sdiod_ib_irqhandler(struct sdio_func
*func
)
91 struct brcmf_bus
*bus_if
= dev_get_drvdata(&func
->dev
);
92 struct brcmf_sdio_dev
*sdiodev
= bus_if
->bus_priv
.sdio
;
94 brcmf_dbg(INTR
, "IB intr triggered\n");
96 brcmf_sdio_isr(sdiodev
->bus
);
99 /* dummy handler for SDIO function 2 interrupt */
100 static void brcmf_sdiod_dummy_irqhandler(struct sdio_func
*func
)
104 int brcmf_sdiod_intr_register(struct brcmf_sdio_dev
*sdiodev
)
106 struct brcmfmac_sdio_pd
*pdata
;
109 u32 addr
, gpiocontrol
;
112 pdata
= &sdiodev
->settings
->bus
.sdio
;
113 if (pdata
->oob_irq_supported
) {
114 brcmf_dbg(SDIO
, "Enter, register OOB IRQ %d\n",
116 ret
= request_irq(pdata
->oob_irq_nr
, brcmf_sdiod_oob_irqhandler
,
117 pdata
->oob_irq_flags
, "brcmf_oob_intr",
118 &sdiodev
->func
[1]->dev
);
120 brcmf_err("request_irq failed %d\n", ret
);
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
);
129 ret
= enable_irq_wake(pdata
->oob_irq_nr
);
131 brcmf_err("enable_irq_wake failed %d\n", ret
);
134 sdiodev
->irq_wake
= true;
136 sdio_claim_host(sdiodev
->func
[1]);
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
);
143 brcmf_sdiod_regwl(sdiodev
, addr
, gpiocontrol
, &ret
);
145 brcmf_sdiod_regwb(sdiodev
, SBSDIO_GPIO_SELECT
, 0xf,
147 brcmf_sdiod_regwb(sdiodev
, SBSDIO_GPIO_OUT
, 0, &ret
);
148 brcmf_sdiod_regwb(sdiodev
, SBSDIO_GPIO_EN
, 0x2, &ret
);
151 /* must configure SDIO_CCCR_IENx to enable irq */
152 data
= brcmf_sdiod_regrb(sdiodev
, SDIO_CCCR_IENx
, &ret
);
153 data
|= 1 << SDIO_FUNC_1
| 1 << SDIO_FUNC_2
| 1;
154 brcmf_sdiod_regwb(sdiodev
, SDIO_CCCR_IENx
, data
, &ret
);
156 /* redirect, configure and enable io for interrupt signal */
157 data
= SDIO_SEPINT_MASK
| SDIO_SEPINT_OE
;
158 if (pdata
->oob_irq_flags
& IRQF_TRIGGER_HIGH
)
159 data
|= SDIO_SEPINT_ACT_HI
;
160 brcmf_sdiod_regwb(sdiodev
, SDIO_CCCR_BRCM_SEPINT
, data
, &ret
);
162 sdio_release_host(sdiodev
->func
[1]);
164 brcmf_dbg(SDIO
, "Entering\n");
165 sdio_claim_host(sdiodev
->func
[1]);
166 sdio_claim_irq(sdiodev
->func
[1], brcmf_sdiod_ib_irqhandler
);
167 sdio_claim_irq(sdiodev
->func
[2], brcmf_sdiod_dummy_irqhandler
);
168 sdio_release_host(sdiodev
->func
[1]);
174 int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev
*sdiodev
)
176 struct brcmfmac_sdio_pd
*pdata
;
178 brcmf_dbg(SDIO
, "Entering\n");
180 pdata
= &sdiodev
->settings
->bus
.sdio
;
181 if (pdata
->oob_irq_supported
) {
182 sdio_claim_host(sdiodev
->func
[1]);
183 brcmf_sdiod_regwb(sdiodev
, SDIO_CCCR_BRCM_SEPINT
, 0, NULL
);
184 brcmf_sdiod_regwb(sdiodev
, SDIO_CCCR_IENx
, 0, NULL
);
185 sdio_release_host(sdiodev
->func
[1]);
187 if (sdiodev
->oob_irq_requested
) {
188 sdiodev
->oob_irq_requested
= false;
189 if (sdiodev
->irq_wake
) {
190 disable_irq_wake(pdata
->oob_irq_nr
);
191 sdiodev
->irq_wake
= false;
193 free_irq(pdata
->oob_irq_nr
, &sdiodev
->func
[1]->dev
);
194 sdiodev
->irq_en
= false;
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]);
206 void brcmf_sdiod_change_state(struct brcmf_sdio_dev
*sdiodev
,
207 enum brcmf_sdiod_state state
)
209 if (sdiodev
->state
== BRCMF_SDIOD_NOMEDIUM
||
210 state
== sdiodev
->state
)
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
);
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
);
227 sdiodev
->state
= state
;
230 static inline int brcmf_sdiod_f0_writeb(struct sdio_func
*func
,
231 uint regaddr
, u8 byte
)
236 * Can only directly write to some F0 registers.
237 * Handle CCCR_IENx and CCCR_ABORT command
240 if ((regaddr
== SDIO_CCCR_ABORT
) ||
241 (regaddr
== SDIO_CCCR_IENx
))
242 sdio_writeb(func
, byte
, regaddr
, &err_ret
);
244 sdio_f0_writeb(func
, byte
, regaddr
, &err_ret
);
249 static int brcmf_sdiod_request_data(struct brcmf_sdio_dev
*sdiodev
, u8 fn
,
250 u32 addr
, u8 regsz
, void *data
, bool write
)
252 struct sdio_func
*func
;
255 brcmf_dbg(SDIO
, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
256 write
, fn
, addr
, regsz
);
258 /* only allow byte access on F0 */
259 if (WARN_ON(regsz
> 1 && !fn
))
261 func
= sdiodev
->func
[fn
];
267 sdio_writeb(func
, *(u8
*)data
, addr
, &ret
);
269 ret
= brcmf_sdiod_f0_writeb(func
, addr
,
273 *(u8
*)data
= sdio_readb(func
, addr
, &ret
);
275 *(u8
*)data
= sdio_f0_readb(func
, addr
, &ret
);
280 sdio_writew(func
, *(u16
*)data
, addr
, &ret
);
282 *(u16
*)data
= sdio_readw(func
, addr
, &ret
);
286 sdio_writel(func
, *(u32
*)data
, addr
, &ret
);
288 *(u32
*)data
= sdio_readl(func
, addr
, &ret
);
291 brcmf_err("invalid size: %d\n", regsz
);
296 brcmf_dbg(SDIO
, "failed to %s data F%d@0x%05x, err: %d\n",
297 write
? "write" : "read", fn
, addr
, ret
);
302 static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev
*sdiodev
, u32 addr
,
303 u8 regsz
, void *data
, bool write
)
309 if (sdiodev
->state
== BRCMF_SDIOD_NOMEDIUM
)
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
318 if ((addr
& ~REG_F0_REG_MASK
) == 0)
325 memset(data
, 0, regsz
);
326 /* for retry wait for 1 ms till bus get settled down */
328 usleep_range(1000, 2000);
329 ret
= brcmf_sdiod_request_data(sdiodev
, func
, addr
, regsz
,
331 } while (ret
!= 0 && ret
!= -ENOMEDIUM
&&
332 retry
++ < SDIOH_API_ACCESS_RETRY_LIMIT
);
334 if (ret
== -ENOMEDIUM
)
335 brcmf_sdiod_change_state(sdiodev
, BRCMF_SDIOD_NOMEDIUM
);
338 * SleepCSR register access can fail when
339 * waking up the device so reduce this noise
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
);
346 brcmf_dbg(SDIO
, "failed to %s data F%d@0x%05x, err: %d\n",
347 write
? "write" : "read", func
, addr
, ret
);
353 brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev
*sdiodev
, u32 address
)
358 if (sdiodev
->state
== BRCMF_SDIOD_NOMEDIUM
)
361 addr
[0] = (address
>> 8) & SBSDIO_SBADDRLOW_MASK
;
362 addr
[1] = (address
>> 16) & SBSDIO_SBADDRMID_MASK
;
363 addr
[2] = (address
>> 24) & SBSDIO_SBADDRHIGH_MASK
;
365 for (i
= 0; i
< 3; i
++) {
366 err
= brcmf_sdiod_regrw_helper(sdiodev
,
367 SBSDIO_FUNC1_SBADDRLOW
+ i
,
368 sizeof(u8
), &addr
[i
], true);
370 brcmf_err("failed at addr: 0x%0x\n",
371 SBSDIO_FUNC1_SBADDRLOW
+ i
);
380 brcmf_sdiod_addrprep(struct brcmf_sdio_dev
*sdiodev
, uint width
, u32
*addr
)
382 uint bar0
= *addr
& ~SBSDIO_SB_OFT_ADDR_MASK
;
385 if (bar0
!= sdiodev
->sbwad
) {
386 err
= brcmf_sdiod_set_sbaddr_window(sdiodev
, bar0
);
390 sdiodev
->sbwad
= bar0
;
393 *addr
&= SBSDIO_SB_OFT_ADDR_MASK
;
396 *addr
|= SBSDIO_SB_ACCESS_2_4B_FLAG
;
401 u8
brcmf_sdiod_regrb(struct brcmf_sdio_dev
*sdiodev
, u32 addr
, int *ret
)
406 brcmf_dbg(SDIO
, "addr:0x%08x\n", addr
);
407 retval
= brcmf_sdiod_regrw_helper(sdiodev
, addr
, sizeof(data
), &data
,
409 brcmf_dbg(SDIO
, "data:0x%02x\n", data
);
417 u32
brcmf_sdiod_regrl(struct brcmf_sdio_dev
*sdiodev
, u32 addr
, int *ret
)
422 brcmf_dbg(SDIO
, "addr:0x%08x\n", addr
);
423 retval
= brcmf_sdiod_addrprep(sdiodev
, sizeof(data
), &addr
);
426 retval
= brcmf_sdiod_regrw_helper(sdiodev
, addr
, sizeof(data
), &data
,
428 brcmf_dbg(SDIO
, "data:0x%08x\n", data
);
437 void brcmf_sdiod_regwb(struct brcmf_sdio_dev
*sdiodev
, u32 addr
,
442 brcmf_dbg(SDIO
, "addr:0x%08x, data:0x%02x\n", addr
, data
);
443 retval
= brcmf_sdiod_regrw_helper(sdiodev
, addr
, sizeof(data
), &data
,
449 void brcmf_sdiod_regwl(struct brcmf_sdio_dev
*sdiodev
, u32 addr
,
454 brcmf_dbg(SDIO
, "addr:0x%08x, data:0x%08x\n", addr
, data
);
455 retval
= brcmf_sdiod_addrprep(sdiodev
, sizeof(data
), &addr
);
458 retval
= brcmf_sdiod_regrw_helper(sdiodev
, addr
, sizeof(data
), &data
,
466 static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev
*sdiodev
, uint fn
,
467 bool write
, u32 addr
, struct sk_buff
*pkt
)
472 /* Single skb use the standard mmc interface */
473 req_sz
= pkt
->len
+ 3;
477 err
= sdio_memcpy_toio(sdiodev
->func
[fn
], addr
,
478 ((u8
*)(pkt
->data
)), req_sz
);
480 err
= sdio_memcpy_fromio(sdiodev
->func
[fn
], ((u8
*)(pkt
->data
)),
483 /* function 2 read is FIFO operation */
484 err
= sdio_readsb(sdiodev
->func
[fn
], ((u8
*)(pkt
->data
)), addr
,
486 if (err
== -ENOMEDIUM
)
487 brcmf_sdiod_change_state(sdiodev
, BRCMF_SDIOD_NOMEDIUM
);
492 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access
493 * @sdiodev: brcmfmac sdio device
494 * @fn: SDIO function number
495 * @write: direction flag
496 * @addr: dongle memory address as source/destination
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.
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
)
507 unsigned int req_sz
, func_blk_sz
, sg_cnt
, sg_data_sz
, pkt_offset
;
508 unsigned int max_req_sz
, orig_offset
, dst_offset
;
509 unsigned short max_seg_cnt
, seg_sz
;
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
;
513 struct mmc_request mmc_req
;
514 struct mmc_command mmc_cmd
;
515 struct mmc_data mmc_dat
;
516 struct scatterlist
*sgl
;
522 target_list
= pktlist
;
523 /* for host with broken sg support, prepare a page aligned list */
524 __skb_queue_head_init(&local_list
);
525 if (!write
&& sdiodev
->settings
->bus
.sdio
.broken_sg_support
) {
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
) {
536 __skb_queue_tail(&local_list
, pkt_next
);
539 pkt_next
= brcmu_pkt_buf_get_skb(req_sz
);
540 if (pkt_next
== NULL
) {
544 __skb_queue_tail(&local_list
, pkt_next
);
545 target_list
= &local_list
;
548 func_blk_sz
= sdiodev
->func
[fn
]->cur_blksize
;
549 max_req_sz
= sdiodev
->max_request_size
;
550 max_seg_cnt
= min_t(unsigned short, sdiodev
->max_segment_count
,
552 seg_sz
= target_list
->qlen
;
554 pkt_next
= target_list
->next
;
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
));
560 mmc_dat
.sg
= sdiodev
->sgtable
.sgl
;
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
;
576 sgl
= sdiodev
->sgtable
.sgl
;
578 while (pkt_next
!= (struct sk_buff
*)target_list
) {
579 pkt_data
= pkt_next
->data
+ pkt_offset
;
580 sg_data_sz
= pkt_next
->len
- pkt_offset
;
581 if (sg_data_sz
> sdiodev
->max_segment_size
)
582 sg_data_sz
= sdiodev
->max_segment_size
;
583 if (sg_data_sz
> max_req_sz
- req_sz
)
584 sg_data_sz
= max_req_sz
- req_sz
;
586 sg_set_buf(sgl
, pkt_data
, sg_data_sz
);
590 req_sz
+= sg_data_sz
;
591 pkt_offset
+= sg_data_sz
;
592 if (pkt_offset
== pkt_next
->len
) {
594 pkt_next
= pkt_next
->next
;
597 if (req_sz
>= max_req_sz
|| sg_cnt
>= max_seg_cnt
)
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
);
609 mmc_dat
.sg_len
= sg_cnt
;
610 mmc_dat
.blocks
= req_sz
/ func_blk_sz
;
611 mmc_cmd
.arg
|= (addr
& 0x1FFFF) << 9; /* address */
612 mmc_cmd
.arg
|= mmc_dat
.blocks
& 0x1FF; /* block count */
613 /* incrementing addr for function 1 */
617 mmc_set_data_timeout(&mmc_dat
, sdiodev
->func
[fn
]->card
);
618 mmc_wait_for_req(sdiodev
->func
[fn
]->card
->host
, &mmc_req
);
620 ret
= mmc_cmd
.error
? mmc_cmd
.error
: mmc_dat
.error
;
621 if (ret
== -ENOMEDIUM
) {
622 brcmf_sdiod_change_state(sdiodev
, BRCMF_SDIOD_NOMEDIUM
);
624 } else if (ret
!= 0) {
625 brcmf_err("CMD53 sg block %s failed %d\n",
626 write
? "write" : "read", ret
);
632 if (!write
&& sdiodev
->settings
->bus
.sdio
.broken_sg_support
) {
633 local_pkt_next
= local_list
.next
;
635 skb_queue_walk(pktlist
, pkt_next
) {
638 req_sz
= local_pkt_next
->len
- orig_offset
;
639 req_sz
= min_t(uint
, pkt_next
->len
- dst_offset
,
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
) {
648 local_pkt_next
= local_pkt_next
->next
;
650 if (dst_offset
== pkt_next
->len
)
652 } while (!skb_queue_empty(&local_list
));
657 sg_init_table(sdiodev
->sgtable
.sgl
, sdiodev
->sgtable
.orig_nents
);
658 while ((pkt_next
= __skb_dequeue(&local_list
)) != NULL
)
659 brcmu_pkt_buf_free_skb(pkt_next
);
664 int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev
*sdiodev
, u8
*buf
, uint nbytes
)
666 struct sk_buff
*mypkt
;
669 mypkt
= brcmu_pkt_buf_get_skb(nbytes
);
671 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
676 err
= brcmf_sdiod_recv_pkt(sdiodev
, mypkt
);
678 memcpy(buf
, mypkt
->data
, nbytes
);
680 brcmu_pkt_buf_free_skb(mypkt
);
684 int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev
*sdiodev
, struct sk_buff
*pkt
)
686 u32 addr
= sdiodev
->sbwad
;
689 brcmf_dbg(SDIO
, "addr = 0x%x, size = %d\n", addr
, pkt
->len
);
691 err
= brcmf_sdiod_addrprep(sdiodev
, 4, &addr
);
695 err
= brcmf_sdiod_buffrw(sdiodev
, SDIO_FUNC_2
, false, addr
, pkt
);
701 int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev
*sdiodev
,
702 struct sk_buff_head
*pktq
, uint totlen
)
704 struct sk_buff
*glom_skb
;
706 u32 addr
= sdiodev
->sbwad
;
709 brcmf_dbg(SDIO
, "addr = 0x%x, size = %d\n",
712 err
= brcmf_sdiod_addrprep(sdiodev
, 4, &addr
);
717 err
= brcmf_sdiod_buffrw(sdiodev
, SDIO_FUNC_2
, false, addr
,
719 else if (!sdiodev
->sg_support
) {
720 glom_skb
= brcmu_pkt_buf_get_skb(totlen
);
723 err
= brcmf_sdiod_buffrw(sdiodev
, SDIO_FUNC_2
, false, addr
,
728 skb_queue_walk(pktq
, skb
) {
729 memcpy(skb
->data
, glom_skb
->data
, skb
->len
);
730 skb_pull(glom_skb
, skb
->len
);
733 err
= brcmf_sdiod_sglist_rw(sdiodev
, SDIO_FUNC_2
, false, addr
,
740 int brcmf_sdiod_send_buf(struct brcmf_sdio_dev
*sdiodev
, u8
*buf
, uint nbytes
)
742 struct sk_buff
*mypkt
;
743 u32 addr
= sdiodev
->sbwad
;
746 mypkt
= brcmu_pkt_buf_get_skb(nbytes
);
748 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
753 memcpy(mypkt
->data
, buf
, nbytes
);
755 err
= brcmf_sdiod_addrprep(sdiodev
, 4, &addr
);
758 err
= brcmf_sdiod_buffrw(sdiodev
, SDIO_FUNC_2
, true, addr
,
761 brcmu_pkt_buf_free_skb(mypkt
);
766 int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev
*sdiodev
,
767 struct sk_buff_head
*pktq
)
770 u32 addr
= sdiodev
->sbwad
;
773 brcmf_dbg(SDIO
, "addr = 0x%x, size = %d\n", addr
, pktq
->qlen
);
775 err
= brcmf_sdiod_addrprep(sdiodev
, 4, &addr
);
779 if (pktq
->qlen
== 1 || !sdiodev
->sg_support
)
780 skb_queue_walk(pktq
, skb
) {
781 err
= brcmf_sdiod_buffrw(sdiodev
, SDIO_FUNC_2
, true,
787 err
= brcmf_sdiod_sglist_rw(sdiodev
, SDIO_FUNC_2
, true, addr
,
794 brcmf_sdiod_ramrw(struct brcmf_sdio_dev
*sdiodev
, bool write
, u32 address
,
802 dsize
= min_t(uint
, SBSDIO_SB_OFT_ADDR_LIMIT
, size
);
803 pkt
= dev_alloc_skb(dsize
);
805 brcmf_err("dev_alloc_skb failed: len %d\n", dsize
);
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
);
817 sdio_claim_host(sdiodev
->func
[1]);
819 /* Do the transfer(s) */
821 /* Set the backplane window to include the start address */
822 bcmerror
= brcmf_sdiod_set_sbaddr_window(sdiodev
, address
);
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
);
830 sdaddr
&= SBSDIO_SB_OFT_ADDR_MASK
;
831 sdaddr
|= SBSDIO_SB_ACCESS_2_4B_FLAG
;
835 memcpy(pkt
->data
, data
, dsize
);
836 bcmerror
= brcmf_sdiod_buffrw(sdiodev
, SDIO_FUNC_1
, write
,
839 brcmf_err("membytes transfer failed\n");
843 memcpy(data
, pkt
->data
, dsize
);
846 /* Adjust for next transfer (if any) */
852 dsize
= min_t(uint
, SBSDIO_SB_OFT_ADDR_LIMIT
, size
);
858 /* Return the window to backplane enumeration space for core access */
859 if (brcmf_sdiod_set_sbaddr_window(sdiodev
, sdiodev
->sbwad
))
860 brcmf_err("FAILED to set window back to 0x%x\n",
863 sdio_release_host(sdiodev
->func
[1]);
868 int brcmf_sdiod_abort(struct brcmf_sdio_dev
*sdiodev
, uint fn
)
870 char t_func
= (char)fn
;
871 brcmf_dbg(SDIO
, "Enter\n");
873 /* issue abort cmd52 command through F0 */
874 brcmf_sdiod_request_data(sdiodev
, SDIO_FUNC_0
, SDIO_CCCR_ABORT
,
875 sizeof(t_func
), &t_func
, true);
877 brcmf_dbg(SDIO
, "Exit\n");
881 void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev
*sdiodev
)
883 struct sdio_func
*func
;
884 struct mmc_host
*host
;
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
;
899 if (!sdiodev
->sg_support
)
902 nents
= max_t(uint
, BRCMF_DEFAULT_RXGLOM_SIZE
,
903 sdiodev
->settings
->bus
.sdio
.txglomsz
);
904 nents
+= (nents
>> 4) + 1;
906 WARN_ON(nents
> sdiodev
->max_segment_count
);
908 brcmf_dbg(TRACE
, "nents=%d\n", nents
);
909 err
= sg_alloc_table(&sdiodev
->sgtable
, nents
, GFP_KERNEL
);
911 brcmf_err("allocation failed: disable scatter-gather");
912 sdiodev
->sg_support
= false;
915 sdiodev
->txglomsz
= sdiodev
->settings
->bus
.sdio
.txglomsz
;
918 #ifdef CONFIG_PM_SLEEP
919 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev
*sdiodev
)
921 sdiodev
->freezer
= kzalloc(sizeof(*sdiodev
->freezer
), GFP_KERNEL
);
922 if (!sdiodev
->freezer
)
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
);
931 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev
*sdiodev
)
933 if (sdiodev
->freezer
) {
934 WARN_ON(atomic_read(&sdiodev
->freezer
->freezing
));
935 kfree(sdiodev
->freezer
);
939 static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev
*sdiodev
)
941 atomic_t
*expect
= &sdiodev
->freezer
->thread_count
;
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]);
956 static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev
*sdiodev
)
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
);
965 bool brcmf_sdiod_freezing(struct brcmf_sdio_dev
*sdiodev
)
967 return atomic_read(&sdiodev
->freezer
->freezing
);
970 void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev
*sdiodev
)
972 if (!brcmf_sdiod_freezing(sdiodev
))
974 sdiodev
->freezer
->frozen_count
++;
975 wake_up(&sdiodev
->freezer
->thread_freeze
);
976 wait_for_completion(&sdiodev
->freezer
->resumed
);
979 void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev
*sdiodev
)
981 atomic_inc(&sdiodev
->freezer
->thread_count
);
984 void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev
*sdiodev
)
986 atomic_dec(&sdiodev
->freezer
->thread_count
);
989 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev
*sdiodev
)
994 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev
*sdiodev
)
997 #endif /* CONFIG_PM_SLEEP */
999 static int brcmf_sdiod_remove(struct brcmf_sdio_dev
*sdiodev
)
1001 sdiodev
->state
= BRCMF_SDIOD_DOWN
;
1003 brcmf_sdio_remove(sdiodev
->bus
);
1004 sdiodev
->bus
= NULL
;
1007 brcmf_sdiod_freezer_detach(sdiodev
);
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]);
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]);
1019 sg_free_table(&sdiodev
->sgtable
);
1022 pm_runtime_allow(sdiodev
->func
[1]->card
->host
->parent
);
1026 static void brcmf_sdiod_host_fixup(struct mmc_host
*host
)
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
;
1034 static int brcmf_sdiod_probe(struct brcmf_sdio_dev
*sdiodev
)
1038 sdiodev
->num_funcs
= 2;
1040 sdio_claim_host(sdiodev
->func
[1]);
1042 ret
= sdio_set_block_size(sdiodev
->func
[1], SDIO_FUNC1_BLOCKSIZE
);
1044 brcmf_err("Failed to set F1 blocksize\n");
1045 sdio_release_host(sdiodev
->func
[1]);
1048 ret
= sdio_set_block_size(sdiodev
->func
[2], SDIO_FUNC2_BLOCKSIZE
);
1050 brcmf_err("Failed to set F2 blocksize\n");
1051 sdio_release_host(sdiodev
->func
[1]);
1055 /* increase F2 timeout */
1056 sdiodev
->func
[2]->enable_timeout
= SDIO_WAIT_F2RDY
;
1058 /* Enable Function 1 */
1059 ret
= sdio_enable_func(sdiodev
->func
[1]);
1060 sdio_release_host(sdiodev
->func
[1]);
1062 brcmf_err("Failed to enable F1: err=%d\n", ret
);
1066 ret
= brcmf_sdiod_freezer_attach(sdiodev
);
1070 /* try to attach to the target device */
1071 sdiodev
->bus
= brcmf_sdio_probe(sdiodev
);
1072 if (!sdiodev
->bus
) {
1076 brcmf_sdiod_host_fixup(sdiodev
->func
[2]->card
->host
);
1079 brcmf_sdiod_remove(sdiodev
);
1084 #define BRCMF_SDIO_DEVICE(dev_id) \
1085 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)}
1087 /* devices we support, null terminated */
1088 static const struct sdio_device_id brcmf_sdmmc_ids
[] = {
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
),
1098 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430
),
1099 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345
),
1100 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354
),
1101 { /* end: all zeroes */ }
1103 MODULE_DEVICE_TABLE(sdio
, brcmf_sdmmc_ids
);
1106 static void brcmf_sdiod_acpi_set_power_manageable(struct device
*dev
,
1109 #if IS_ENABLED(CONFIG_ACPI)
1110 struct acpi_device
*adev
;
1112 adev
= ACPI_COMPANION(dev
);
1114 adev
->flags
.power_manageable
= 0;
1118 static int brcmf_ops_sdio_probe(struct sdio_func
*func
,
1119 const struct sdio_device_id
*id
)
1122 struct brcmf_sdio_dev
*sdiodev
;
1123 struct brcmf_bus
*bus_if
;
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
);
1133 /* prohibit ACPI power management for this device */
1134 brcmf_sdiod_acpi_set_power_manageable(dev
, 0);
1136 /* Consume func num 1 but dont do anything with it. */
1140 /* Ignore anything but func 2 */
1144 bus_if
= kzalloc(sizeof(struct brcmf_bus
), GFP_KERNEL
);
1147 sdiodev
= kzalloc(sizeof(struct brcmf_sdio_dev
), GFP_KERNEL
);
1153 /* store refs to functions used. mmc_card does
1154 * not hold the F0 function pointer.
1156 sdiodev
->func
[0] = kmemdup(func
, sizeof(*func
), GFP_KERNEL
);
1157 sdiodev
->func
[0]->num
= 0;
1158 sdiodev
->func
[1] = func
->card
->sdio_func
[0];
1159 sdiodev
->func
[2] = func
;
1161 sdiodev
->bus_if
= bus_if
;
1162 bus_if
->bus_priv
.sdio
= sdiodev
;
1163 bus_if
->proto_type
= BRCMF_PROTO_BCDC
;
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
;
1168 brcmf_sdiod_change_state(sdiodev
, BRCMF_SDIOD_DOWN
);
1170 brcmf_dbg(SDIO
, "F2 found, calling brcmf_sdiod_probe...\n");
1171 err
= brcmf_sdiod_probe(sdiodev
);
1173 brcmf_err("F2 error, probe failed %d...\n", err
);
1177 brcmf_dbg(SDIO
, "F2 init completed...\n");
1181 dev_set_drvdata(&func
->dev
, NULL
);
1182 dev_set_drvdata(&sdiodev
->func
[1]->dev
, NULL
);
1183 kfree(sdiodev
->func
[0]);
1189 static void brcmf_ops_sdio_remove(struct sdio_func
*func
)
1191 struct brcmf_bus
*bus_if
;
1192 struct brcmf_sdio_dev
*sdiodev
;
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
);
1202 bus_if
= dev_get_drvdata(&func
->dev
);
1204 sdiodev
= bus_if
->bus_priv
.sdio
;
1205 brcmf_sdiod_remove(sdiodev
);
1207 dev_set_drvdata(&sdiodev
->func
[1]->dev
, NULL
);
1208 dev_set_drvdata(&sdiodev
->func
[2]->dev
, NULL
);
1211 kfree(sdiodev
->func
[0]);
1215 brcmf_dbg(SDIO
, "Exit\n");
1218 void brcmf_sdio_wowl_config(struct device
*dev
, bool enabled
)
1220 struct brcmf_bus
*bus_if
= dev_get_drvdata(dev
);
1221 struct brcmf_sdio_dev
*sdiodev
= bus_if
->bus_priv
.sdio
;
1223 brcmf_dbg(SDIO
, "Configuring WOWL, enabled=%d\n", enabled
);
1224 sdiodev
->wowl_enabled
= enabled
;
1227 #ifdef CONFIG_PM_SLEEP
1228 static int brcmf_ops_sdio_suspend(struct device
*dev
)
1230 struct sdio_func
*func
;
1231 struct brcmf_bus
*bus_if
;
1232 struct brcmf_sdio_dev
*sdiodev
;
1233 mmc_pm_flag_t sdio_flags
;
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
)
1241 bus_if
= dev_get_drvdata(dev
);
1242 sdiodev
= bus_if
->bus_priv
.sdio
;
1244 brcmf_sdiod_freezer_on(sdiodev
);
1245 brcmf_sdio_wd_timer(sdiodev
->bus
, 0);
1247 sdio_flags
= MMC_PM_KEEP_POWER
;
1248 if (sdiodev
->wowl_enabled
) {
1249 if (sdiodev
->settings
->bus
.sdio
.oob_irq_supported
)
1250 enable_irq_wake(sdiodev
->settings
->bus
.sdio
.oob_irq_nr
);
1252 sdio_flags
|= MMC_PM_WAKE_SDIO_IRQ
;
1254 if (sdio_set_host_pm_flags(sdiodev
->func
[1], sdio_flags
))
1255 brcmf_err("Failed to set pm_flags %x\n", sdio_flags
);
1259 static int brcmf_ops_sdio_resume(struct device
*dev
)
1261 struct brcmf_bus
*bus_if
= dev_get_drvdata(dev
);
1262 struct brcmf_sdio_dev
*sdiodev
= bus_if
->bus_priv
.sdio
;
1263 struct sdio_func
*func
= container_of(dev
, struct sdio_func
, dev
);
1265 brcmf_dbg(SDIO
, "Enter: F%d\n", func
->num
);
1266 if (func
->num
!= SDIO_FUNC_2
)
1269 brcmf_sdiod_freezer_off(sdiodev
);
1273 static const struct dev_pm_ops brcmf_sdio_pm_ops
= {
1274 .suspend
= brcmf_ops_sdio_suspend
,
1275 .resume
= brcmf_ops_sdio_resume
,
1277 #endif /* CONFIG_PM_SLEEP */
1279 static struct sdio_driver brcmf_sdmmc_driver
= {
1280 .probe
= brcmf_ops_sdio_probe
,
1281 .remove
= brcmf_ops_sdio_remove
,
1282 .name
= KBUILD_MODNAME
,
1283 .id_table
= brcmf_sdmmc_ids
,
1285 .owner
= THIS_MODULE
,
1286 #ifdef CONFIG_PM_SLEEP
1287 .pm
= &brcmf_sdio_pm_ops
,
1288 #endif /* CONFIG_PM_SLEEP */
1292 void brcmf_sdio_register(void)
1296 ret
= sdio_register_driver(&brcmf_sdmmc_driver
);
1298 brcmf_err("sdio_register_driver failed: %d\n", ret
);
1301 void brcmf_sdio_exit(void)
1303 brcmf_dbg(SDIO
, "Enter\n");
1305 sdio_unregister_driver(&brcmf_sdmmc_driver
);