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/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>
39 #include <brcm_hw_ids.h>
40 #include <brcmu_utils.h>
41 #include <brcmu_wifi.h>
42 #include <chipcommon.h>
51 #define SDIOH_API_ACCESS_RETRY_LIMIT 2
53 #define DMA_ALIGN_MASK 0x03
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
60 #define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */
62 struct brcmf_sdiod_freezer
{
64 atomic_t thread_count
;
66 wait_queue_head_t thread_freeze
;
67 struct completion resumed
;
70 static irqreturn_t
brcmf_sdiod_oob_irqhandler(int irq
, void *dev_id
)
72 struct brcmf_bus
*bus_if
= dev_get_drvdata(dev_id
);
73 struct brcmf_sdio_dev
*sdiodev
= bus_if
->bus_priv
.sdio
;
75 brcmf_dbg(INTR
, "OOB intr triggered\n");
77 /* out-of-band interrupt is level-triggered which won't
78 * be cleared until dpc
80 if (sdiodev
->irq_en
) {
81 disable_irq_nosync(irq
);
82 sdiodev
->irq_en
= false;
85 brcmf_sdio_isr(sdiodev
->bus
);
90 static void brcmf_sdiod_ib_irqhandler(struct sdio_func
*func
)
92 struct brcmf_bus
*bus_if
= dev_get_drvdata(&func
->dev
);
93 struct brcmf_sdio_dev
*sdiodev
= bus_if
->bus_priv
.sdio
;
95 brcmf_dbg(INTR
, "IB intr triggered\n");
97 brcmf_sdio_isr(sdiodev
->bus
);
100 /* dummy handler for SDIO function 2 interrupt */
101 static void brcmf_sdiod_dummy_irqhandler(struct sdio_func
*func
)
105 int brcmf_sdiod_intr_register(struct brcmf_sdio_dev
*sdiodev
)
107 struct brcmfmac_sdio_pd
*pdata
;
110 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 spin_lock_init(&sdiodev
->irq_en_lock
);
117 sdiodev
->irq_en
= true;
119 ret
= request_irq(pdata
->oob_irq_nr
, brcmf_sdiod_oob_irqhandler
,
120 pdata
->oob_irq_flags
, "brcmf_oob_intr",
121 &sdiodev
->func1
->dev
);
123 brcmf_err("request_irq failed %d\n", ret
);
126 sdiodev
->oob_irq_requested
= true;
128 ret
= enable_irq_wake(pdata
->oob_irq_nr
);
130 brcmf_err("enable_irq_wake failed %d\n", ret
);
133 sdiodev
->irq_wake
= true;
135 sdio_claim_host(sdiodev
->func1
);
137 if (sdiodev
->bus_if
->chip
== BRCM_CC_43362_CHIP_ID
) {
138 /* assign GPIO to SDIO core */
139 addr
= CORE_CC_REG(SI_ENUM_BASE
, gpiocontrol
);
140 gpiocontrol
= brcmf_sdiod_readl(sdiodev
, addr
, &ret
);
142 brcmf_sdiod_writel(sdiodev
, addr
, gpiocontrol
, &ret
);
144 brcmf_sdiod_writeb(sdiodev
, SBSDIO_GPIO_SELECT
,
146 brcmf_sdiod_writeb(sdiodev
, SBSDIO_GPIO_OUT
, 0, &ret
);
147 brcmf_sdiod_writeb(sdiodev
, SBSDIO_GPIO_EN
, 0x2, &ret
);
150 /* must configure SDIO_CCCR_IENx to enable irq */
151 data
= brcmf_sdiod_func0_rb(sdiodev
, SDIO_CCCR_IENx
, &ret
);
152 data
|= SDIO_CCCR_IEN_FUNC1
| SDIO_CCCR_IEN_FUNC2
|
154 brcmf_sdiod_func0_wb(sdiodev
, SDIO_CCCR_IENx
, data
, &ret
);
156 /* redirect, configure and enable io for interrupt signal */
157 data
= SDIO_CCCR_BRCM_SEPINT_MASK
| SDIO_CCCR_BRCM_SEPINT_OE
;
158 if (pdata
->oob_irq_flags
& IRQF_TRIGGER_HIGH
)
159 data
|= SDIO_CCCR_BRCM_SEPINT_ACT_HI
;
160 brcmf_sdiod_func0_wb(sdiodev
, SDIO_CCCR_BRCM_SEPINT
,
162 sdio_release_host(sdiodev
->func1
);
164 brcmf_dbg(SDIO
, "Entering\n");
165 sdio_claim_host(sdiodev
->func1
);
166 sdio_claim_irq(sdiodev
->func1
, brcmf_sdiod_ib_irqhandler
);
167 sdio_claim_irq(sdiodev
->func2
, brcmf_sdiod_dummy_irqhandler
);
168 sdio_release_host(sdiodev
->func1
);
169 sdiodev
->sd_irq_requested
= true;
175 void brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev
*sdiodev
)
178 brcmf_dbg(SDIO
, "Entering oob=%d sd=%d\n",
179 sdiodev
->oob_irq_requested
,
180 sdiodev
->sd_irq_requested
);
182 if (sdiodev
->oob_irq_requested
) {
183 struct brcmfmac_sdio_pd
*pdata
;
185 pdata
= &sdiodev
->settings
->bus
.sdio
;
186 sdio_claim_host(sdiodev
->func1
);
187 brcmf_sdiod_func0_wb(sdiodev
, SDIO_CCCR_BRCM_SEPINT
, 0, NULL
);
188 brcmf_sdiod_func0_wb(sdiodev
, SDIO_CCCR_IENx
, 0, NULL
);
189 sdio_release_host(sdiodev
->func1
);
191 sdiodev
->oob_irq_requested
= false;
192 if (sdiodev
->irq_wake
) {
193 disable_irq_wake(pdata
->oob_irq_nr
);
194 sdiodev
->irq_wake
= false;
196 free_irq(pdata
->oob_irq_nr
, &sdiodev
->func1
->dev
);
197 sdiodev
->irq_en
= false;
198 sdiodev
->oob_irq_requested
= false;
201 if (sdiodev
->sd_irq_requested
) {
202 sdio_claim_host(sdiodev
->func1
);
203 sdio_release_irq(sdiodev
->func2
);
204 sdio_release_irq(sdiodev
->func1
);
205 sdio_release_host(sdiodev
->func1
);
206 sdiodev
->sd_irq_requested
= false;
210 void brcmf_sdiod_change_state(struct brcmf_sdio_dev
*sdiodev
,
211 enum brcmf_sdiod_state state
)
213 if (sdiodev
->state
== BRCMF_SDIOD_NOMEDIUM
||
214 state
== sdiodev
->state
)
217 brcmf_dbg(TRACE
, "%d -> %d\n", sdiodev
->state
, state
);
218 switch (sdiodev
->state
) {
219 case BRCMF_SDIOD_DATA
:
220 /* any other state means bus interface is down */
221 brcmf_bus_change_state(sdiodev
->bus_if
, BRCMF_BUS_DOWN
);
223 case BRCMF_SDIOD_DOWN
:
224 /* transition from DOWN to DATA means bus interface is up */
225 if (state
== BRCMF_SDIOD_DATA
)
226 brcmf_bus_change_state(sdiodev
->bus_if
, BRCMF_BUS_UP
);
231 sdiodev
->state
= state
;
234 static int brcmf_sdiod_set_backplane_window(struct brcmf_sdio_dev
*sdiodev
,
237 u32 v
, bar0
= addr
& SBSDIO_SBWINDOW_MASK
;
240 if (bar0
== sdiodev
->sbwad
)
245 for (i
= 0 ; i
< 3 && !err
; i
++, v
>>= 8)
246 brcmf_sdiod_writeb(sdiodev
, SBSDIO_FUNC1_SBADDRLOW
+ i
,
250 sdiodev
->sbwad
= bar0
;
255 u32
brcmf_sdiod_readl(struct brcmf_sdio_dev
*sdiodev
, u32 addr
, int *ret
)
260 retval
= brcmf_sdiod_set_backplane_window(sdiodev
, addr
);
264 addr
&= SBSDIO_SB_OFT_ADDR_MASK
;
265 addr
|= SBSDIO_SB_ACCESS_2_4B_FLAG
;
267 data
= sdio_readl(sdiodev
->func1
, addr
, &retval
);
276 void brcmf_sdiod_writel(struct brcmf_sdio_dev
*sdiodev
, u32 addr
,
281 retval
= brcmf_sdiod_set_backplane_window(sdiodev
, addr
);
285 addr
&= SBSDIO_SB_OFT_ADDR_MASK
;
286 addr
|= SBSDIO_SB_ACCESS_2_4B_FLAG
;
288 sdio_writel(sdiodev
->func1
, data
, addr
, &retval
);
295 static int brcmf_sdiod_skbuff_read(struct brcmf_sdio_dev
*sdiodev
,
296 struct sdio_func
*func
, u32 addr
,
302 /* Single skb use the standard mmc interface */
303 req_sz
= skb
->len
+ 3;
308 err
= sdio_memcpy_fromio(func
, ((u8
*)(skb
->data
)), addr
,
312 err
= sdio_readsb(func
, ((u8
*)(skb
->data
)), addr
, req_sz
);
315 /* bail out as things are really fishy here */
316 WARN(1, "invalid sdio function number: %d\n", func
->num
);
320 if (err
== -ENOMEDIUM
)
321 brcmf_sdiod_change_state(sdiodev
, BRCMF_SDIOD_NOMEDIUM
);
326 static int brcmf_sdiod_skbuff_write(struct brcmf_sdio_dev
*sdiodev
,
327 struct sdio_func
*func
, u32 addr
,
333 /* Single skb use the standard mmc interface */
334 req_sz
= skb
->len
+ 3;
337 err
= sdio_memcpy_toio(func
, addr
, ((u8
*)(skb
->data
)), req_sz
);
339 if (err
== -ENOMEDIUM
)
340 brcmf_sdiod_change_state(sdiodev
, BRCMF_SDIOD_NOMEDIUM
);
346 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access
347 * @sdiodev: brcmfmac sdio device
348 * @func: SDIO function
349 * @write: direction flag
350 * @addr: dongle memory address as source/destination
353 * This function takes the respbonsibility as the interface function to MMC
354 * stack for block data access. It assumes that the skb passed down by the
355 * caller has already been padded and aligned.
357 static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev
*sdiodev
,
358 struct sdio_func
*func
,
359 bool write
, u32 addr
,
360 struct sk_buff_head
*pktlist
)
362 unsigned int req_sz
, func_blk_sz
, sg_cnt
, sg_data_sz
, pkt_offset
;
363 unsigned int max_req_sz
, orig_offset
, dst_offset
;
364 unsigned short max_seg_cnt
, seg_sz
;
365 unsigned char *pkt_data
, *orig_data
, *dst_data
;
366 struct sk_buff
*pkt_next
= NULL
, *local_pkt_next
;
367 struct sk_buff_head local_list
, *target_list
;
368 struct mmc_request mmc_req
;
369 struct mmc_command mmc_cmd
;
370 struct mmc_data mmc_dat
;
371 struct scatterlist
*sgl
;
377 target_list
= pktlist
;
378 /* for host with broken sg support, prepare a page aligned list */
379 __skb_queue_head_init(&local_list
);
380 if (!write
&& sdiodev
->settings
->bus
.sdio
.broken_sg_support
) {
382 skb_queue_walk(pktlist
, pkt_next
)
383 req_sz
+= pkt_next
->len
;
384 req_sz
= ALIGN(req_sz
, func
->cur_blksize
);
385 while (req_sz
> PAGE_SIZE
) {
386 pkt_next
= brcmu_pkt_buf_get_skb(PAGE_SIZE
);
387 if (pkt_next
== NULL
) {
391 __skb_queue_tail(&local_list
, pkt_next
);
394 pkt_next
= brcmu_pkt_buf_get_skb(req_sz
);
395 if (pkt_next
== NULL
) {
399 __skb_queue_tail(&local_list
, pkt_next
);
400 target_list
= &local_list
;
403 func_blk_sz
= func
->cur_blksize
;
404 max_req_sz
= sdiodev
->max_request_size
;
405 max_seg_cnt
= min_t(unsigned short, sdiodev
->max_segment_count
,
407 seg_sz
= target_list
->qlen
;
409 pkt_next
= target_list
->next
;
411 memset(&mmc_req
, 0, sizeof(struct mmc_request
));
412 memset(&mmc_cmd
, 0, sizeof(struct mmc_command
));
413 memset(&mmc_dat
, 0, sizeof(struct mmc_data
));
415 mmc_dat
.sg
= sdiodev
->sgtable
.sgl
;
416 mmc_dat
.blksz
= func_blk_sz
;
417 mmc_dat
.flags
= write
? MMC_DATA_WRITE
: MMC_DATA_READ
;
418 mmc_cmd
.opcode
= SD_IO_RW_EXTENDED
;
419 mmc_cmd
.arg
= write
? 1<<31 : 0; /* write flag */
420 mmc_cmd
.arg
|= (func
->num
& 0x7) << 28; /* SDIO func num */
421 mmc_cmd
.arg
|= 1 << 27; /* block mode */
422 /* for function 1 the addr will be incremented */
423 mmc_cmd
.arg
|= (func
->num
== 1) ? 1 << 26 : 0;
424 mmc_cmd
.flags
= MMC_RSP_SPI_R5
| MMC_RSP_R5
| MMC_CMD_ADTC
;
425 mmc_req
.cmd
= &mmc_cmd
;
426 mmc_req
.data
= &mmc_dat
;
431 sgl
= sdiodev
->sgtable
.sgl
;
433 while (pkt_next
!= (struct sk_buff
*)target_list
) {
434 pkt_data
= pkt_next
->data
+ pkt_offset
;
435 sg_data_sz
= pkt_next
->len
- pkt_offset
;
436 if (sg_data_sz
> sdiodev
->max_segment_size
)
437 sg_data_sz
= sdiodev
->max_segment_size
;
438 if (sg_data_sz
> max_req_sz
- req_sz
)
439 sg_data_sz
= max_req_sz
- req_sz
;
441 sg_set_buf(sgl
, pkt_data
, sg_data_sz
);
445 req_sz
+= sg_data_sz
;
446 pkt_offset
+= sg_data_sz
;
447 if (pkt_offset
== pkt_next
->len
) {
449 pkt_next
= pkt_next
->next
;
452 if (req_sz
>= max_req_sz
|| sg_cnt
>= max_seg_cnt
)
457 if (req_sz
% func_blk_sz
!= 0) {
458 brcmf_err("sg request length %u is not %u aligned\n",
459 req_sz
, func_blk_sz
);
464 mmc_dat
.sg_len
= sg_cnt
;
465 mmc_dat
.blocks
= req_sz
/ func_blk_sz
;
466 mmc_cmd
.arg
|= (addr
& 0x1FFFF) << 9; /* address */
467 mmc_cmd
.arg
|= mmc_dat
.blocks
& 0x1FF; /* block count */
468 /* incrementing addr for function 1 */
472 mmc_set_data_timeout(&mmc_dat
, func
->card
);
473 mmc_wait_for_req(func
->card
->host
, &mmc_req
);
475 ret
= mmc_cmd
.error
? mmc_cmd
.error
: mmc_dat
.error
;
476 if (ret
== -ENOMEDIUM
) {
477 brcmf_sdiod_change_state(sdiodev
, BRCMF_SDIOD_NOMEDIUM
);
479 } else if (ret
!= 0) {
480 brcmf_err("CMD53 sg block %s failed %d\n",
481 write
? "write" : "read", ret
);
487 if (!write
&& sdiodev
->settings
->bus
.sdio
.broken_sg_support
) {
488 local_pkt_next
= local_list
.next
;
490 skb_queue_walk(pktlist
, pkt_next
) {
493 req_sz
= local_pkt_next
->len
- orig_offset
;
494 req_sz
= min_t(uint
, pkt_next
->len
- dst_offset
,
496 orig_data
= local_pkt_next
->data
+ orig_offset
;
497 dst_data
= pkt_next
->data
+ dst_offset
;
498 memcpy(dst_data
, orig_data
, req_sz
);
499 orig_offset
+= req_sz
;
500 dst_offset
+= req_sz
;
501 if (orig_offset
== local_pkt_next
->len
) {
503 local_pkt_next
= local_pkt_next
->next
;
505 if (dst_offset
== pkt_next
->len
)
507 } while (!skb_queue_empty(&local_list
));
512 sg_init_table(sdiodev
->sgtable
.sgl
, sdiodev
->sgtable
.orig_nents
);
513 while ((pkt_next
= __skb_dequeue(&local_list
)) != NULL
)
514 brcmu_pkt_buf_free_skb(pkt_next
);
519 int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev
*sdiodev
, u8
*buf
, uint nbytes
)
521 struct sk_buff
*mypkt
;
524 mypkt
= brcmu_pkt_buf_get_skb(nbytes
);
526 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
531 err
= brcmf_sdiod_recv_pkt(sdiodev
, mypkt
);
533 memcpy(buf
, mypkt
->data
, nbytes
);
535 brcmu_pkt_buf_free_skb(mypkt
);
539 int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev
*sdiodev
, struct sk_buff
*pkt
)
541 u32 addr
= sdiodev
->cc_core
->base
;
544 brcmf_dbg(SDIO
, "addr = 0x%x, size = %d\n", addr
, pkt
->len
);
546 err
= brcmf_sdiod_set_backplane_window(sdiodev
, addr
);
550 addr
&= SBSDIO_SB_OFT_ADDR_MASK
;
551 addr
|= SBSDIO_SB_ACCESS_2_4B_FLAG
;
553 err
= brcmf_sdiod_skbuff_read(sdiodev
, sdiodev
->func2
, addr
, pkt
);
559 int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev
*sdiodev
,
560 struct sk_buff_head
*pktq
, uint totlen
)
562 struct sk_buff
*glom_skb
= NULL
;
564 u32 addr
= sdiodev
->cc_core
->base
;
567 brcmf_dbg(SDIO
, "addr = 0x%x, size = %d\n",
570 err
= brcmf_sdiod_set_backplane_window(sdiodev
, addr
);
574 addr
&= SBSDIO_SB_OFT_ADDR_MASK
;
575 addr
|= SBSDIO_SB_ACCESS_2_4B_FLAG
;
578 err
= brcmf_sdiod_skbuff_read(sdiodev
, sdiodev
->func2
, addr
,
580 else if (!sdiodev
->sg_support
) {
581 glom_skb
= brcmu_pkt_buf_get_skb(totlen
);
584 err
= brcmf_sdiod_skbuff_read(sdiodev
, sdiodev
->func2
, addr
,
589 skb_queue_walk(pktq
, skb
) {
590 memcpy(skb
->data
, glom_skb
->data
, skb
->len
);
591 skb_pull(glom_skb
, skb
->len
);
594 err
= brcmf_sdiod_sglist_rw(sdiodev
, sdiodev
->func2
, false,
598 brcmu_pkt_buf_free_skb(glom_skb
);
602 int brcmf_sdiod_send_buf(struct brcmf_sdio_dev
*sdiodev
, u8
*buf
, uint nbytes
)
604 struct sk_buff
*mypkt
;
605 u32 addr
= sdiodev
->cc_core
->base
;
608 mypkt
= brcmu_pkt_buf_get_skb(nbytes
);
611 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
616 memcpy(mypkt
->data
, buf
, nbytes
);
618 err
= brcmf_sdiod_set_backplane_window(sdiodev
, addr
);
622 addr
&= SBSDIO_SB_OFT_ADDR_MASK
;
623 addr
|= SBSDIO_SB_ACCESS_2_4B_FLAG
;
625 err
= brcmf_sdiod_skbuff_write(sdiodev
, sdiodev
->func2
, addr
, mypkt
);
627 brcmu_pkt_buf_free_skb(mypkt
);
632 int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev
*sdiodev
,
633 struct sk_buff_head
*pktq
)
636 u32 addr
= sdiodev
->cc_core
->base
;
639 brcmf_dbg(SDIO
, "addr = 0x%x, size = %d\n", addr
, pktq
->qlen
);
641 err
= brcmf_sdiod_set_backplane_window(sdiodev
, addr
);
645 addr
&= SBSDIO_SB_OFT_ADDR_MASK
;
646 addr
|= SBSDIO_SB_ACCESS_2_4B_FLAG
;
648 if (pktq
->qlen
== 1 || !sdiodev
->sg_support
) {
649 skb_queue_walk(pktq
, skb
) {
650 err
= brcmf_sdiod_skbuff_write(sdiodev
, sdiodev
->func2
,
656 err
= brcmf_sdiod_sglist_rw(sdiodev
, sdiodev
->func2
, true,
664 brcmf_sdiod_ramrw(struct brcmf_sdio_dev
*sdiodev
, bool write
, u32 address
,
672 dsize
= min_t(uint
, SBSDIO_SB_OFT_ADDR_LIMIT
, size
);
673 pkt
= dev_alloc_skb(dsize
);
675 brcmf_err("dev_alloc_skb failed: len %d\n", dsize
);
680 /* Determine initial transfer parameters */
681 sdaddr
= address
& SBSDIO_SB_OFT_ADDR_MASK
;
682 if ((sdaddr
+ size
) & SBSDIO_SBWINDOW_MASK
)
683 dsize
= (SBSDIO_SB_OFT_ADDR_LIMIT
- sdaddr
);
687 sdio_claim_host(sdiodev
->func1
);
689 /* Do the transfer(s) */
691 /* Set the backplane window to include the start address */
692 err
= brcmf_sdiod_set_backplane_window(sdiodev
, address
);
696 brcmf_dbg(SDIO
, "%s %d bytes at offset 0x%08x in window 0x%08x\n",
697 write
? "write" : "read", dsize
,
698 sdaddr
, address
& SBSDIO_SBWINDOW_MASK
);
700 sdaddr
&= SBSDIO_SB_OFT_ADDR_MASK
;
701 sdaddr
|= SBSDIO_SB_ACCESS_2_4B_FLAG
;
706 memcpy(pkt
->data
, data
, dsize
);
707 err
= brcmf_sdiod_skbuff_write(sdiodev
, sdiodev
->func1
,
710 err
= brcmf_sdiod_skbuff_read(sdiodev
, sdiodev
->func1
,
715 brcmf_err("membytes transfer failed\n");
719 memcpy(data
, pkt
->data
, dsize
);
722 /* Adjust for next transfer (if any) */
728 dsize
= min_t(uint
, SBSDIO_SB_OFT_ADDR_LIMIT
, size
);
734 sdio_release_host(sdiodev
->func1
);
739 int brcmf_sdiod_abort(struct brcmf_sdio_dev
*sdiodev
, struct sdio_func
*func
)
741 brcmf_dbg(SDIO
, "Enter\n");
743 /* Issue abort cmd52 command through F0 */
744 brcmf_sdiod_func0_wb(sdiodev
, SDIO_CCCR_ABORT
, func
->num
, NULL
);
746 brcmf_dbg(SDIO
, "Exit\n");
750 void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev
*sdiodev
)
752 struct sdio_func
*func
;
753 struct mmc_host
*host
;
758 func
= sdiodev
->func2
;
759 host
= func
->card
->host
;
760 sdiodev
->sg_support
= host
->max_segs
> 1;
761 max_blocks
= min_t(uint
, host
->max_blk_count
, 511u);
762 sdiodev
->max_request_size
= min_t(uint
, host
->max_req_size
,
763 max_blocks
* func
->cur_blksize
);
764 sdiodev
->max_segment_count
= min_t(uint
, host
->max_segs
,
765 SG_MAX_SINGLE_ALLOC
);
766 sdiodev
->max_segment_size
= host
->max_seg_size
;
768 if (!sdiodev
->sg_support
)
771 nents
= max_t(uint
, BRCMF_DEFAULT_RXGLOM_SIZE
,
772 sdiodev
->settings
->bus
.sdio
.txglomsz
);
773 nents
+= (nents
>> 4) + 1;
775 WARN_ON(nents
> sdiodev
->max_segment_count
);
777 brcmf_dbg(TRACE
, "nents=%d\n", nents
);
778 err
= sg_alloc_table(&sdiodev
->sgtable
, nents
, GFP_KERNEL
);
780 brcmf_err("allocation failed: disable scatter-gather");
781 sdiodev
->sg_support
= false;
784 sdiodev
->txglomsz
= sdiodev
->settings
->bus
.sdio
.txglomsz
;
787 #ifdef CONFIG_PM_SLEEP
788 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev
*sdiodev
)
790 sdiodev
->freezer
= kzalloc(sizeof(*sdiodev
->freezer
), GFP_KERNEL
);
791 if (!sdiodev
->freezer
)
793 atomic_set(&sdiodev
->freezer
->thread_count
, 0);
794 atomic_set(&sdiodev
->freezer
->freezing
, 0);
795 init_waitqueue_head(&sdiodev
->freezer
->thread_freeze
);
796 init_completion(&sdiodev
->freezer
->resumed
);
800 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev
*sdiodev
)
802 if (sdiodev
->freezer
) {
803 WARN_ON(atomic_read(&sdiodev
->freezer
->freezing
));
804 kfree(sdiodev
->freezer
);
808 static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev
*sdiodev
)
810 atomic_t
*expect
= &sdiodev
->freezer
->thread_count
;
813 sdiodev
->freezer
->frozen_count
= 0;
814 reinit_completion(&sdiodev
->freezer
->resumed
);
815 atomic_set(&sdiodev
->freezer
->freezing
, 1);
816 brcmf_sdio_trigger_dpc(sdiodev
->bus
);
817 wait_event(sdiodev
->freezer
->thread_freeze
,
818 atomic_read(expect
) == sdiodev
->freezer
->frozen_count
);
819 sdio_claim_host(sdiodev
->func1
);
820 res
= brcmf_sdio_sleep(sdiodev
->bus
, true);
821 sdio_release_host(sdiodev
->func1
);
825 static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev
*sdiodev
)
827 sdio_claim_host(sdiodev
->func1
);
828 brcmf_sdio_sleep(sdiodev
->bus
, false);
829 sdio_release_host(sdiodev
->func1
);
830 atomic_set(&sdiodev
->freezer
->freezing
, 0);
831 complete_all(&sdiodev
->freezer
->resumed
);
834 bool brcmf_sdiod_freezing(struct brcmf_sdio_dev
*sdiodev
)
836 return atomic_read(&sdiodev
->freezer
->freezing
);
839 void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev
*sdiodev
)
841 if (!brcmf_sdiod_freezing(sdiodev
))
843 sdiodev
->freezer
->frozen_count
++;
844 wake_up(&sdiodev
->freezer
->thread_freeze
);
845 wait_for_completion(&sdiodev
->freezer
->resumed
);
848 void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev
*sdiodev
)
850 atomic_inc(&sdiodev
->freezer
->thread_count
);
853 void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev
*sdiodev
)
855 atomic_dec(&sdiodev
->freezer
->thread_count
);
858 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev
*sdiodev
)
863 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev
*sdiodev
)
866 #endif /* CONFIG_PM_SLEEP */
868 static int brcmf_sdiod_remove(struct brcmf_sdio_dev
*sdiodev
)
870 sdiodev
->state
= BRCMF_SDIOD_DOWN
;
872 brcmf_sdio_remove(sdiodev
->bus
);
876 brcmf_sdiod_freezer_detach(sdiodev
);
878 /* Disable Function 2 */
879 sdio_claim_host(sdiodev
->func2
);
880 sdio_disable_func(sdiodev
->func2
);
881 sdio_release_host(sdiodev
->func2
);
883 /* Disable Function 1 */
884 sdio_claim_host(sdiodev
->func1
);
885 sdio_disable_func(sdiodev
->func1
);
886 sdio_release_host(sdiodev
->func1
);
888 sg_free_table(&sdiodev
->sgtable
);
891 pm_runtime_allow(sdiodev
->func1
->card
->host
->parent
);
895 static void brcmf_sdiod_host_fixup(struct mmc_host
*host
)
897 /* runtime-pm powers off the device */
898 pm_runtime_forbid(host
->parent
);
899 /* avoid removal detection upon resume */
900 host
->caps
|= MMC_CAP_NONREMOVABLE
;
903 static int brcmf_sdiod_probe(struct brcmf_sdio_dev
*sdiodev
)
907 sdio_claim_host(sdiodev
->func1
);
909 ret
= sdio_set_block_size(sdiodev
->func1
, SDIO_FUNC1_BLOCKSIZE
);
911 brcmf_err("Failed to set F1 blocksize\n");
912 sdio_release_host(sdiodev
->func1
);
915 ret
= sdio_set_block_size(sdiodev
->func2
, SDIO_FUNC2_BLOCKSIZE
);
917 brcmf_err("Failed to set F2 blocksize\n");
918 sdio_release_host(sdiodev
->func1
);
922 /* increase F2 timeout */
923 sdiodev
->func2
->enable_timeout
= SDIO_WAIT_F2RDY
;
925 /* Enable Function 1 */
926 ret
= sdio_enable_func(sdiodev
->func1
);
927 sdio_release_host(sdiodev
->func1
);
929 brcmf_err("Failed to enable F1: err=%d\n", ret
);
933 ret
= brcmf_sdiod_freezer_attach(sdiodev
);
937 /* try to attach to the target device */
938 sdiodev
->bus
= brcmf_sdio_probe(sdiodev
);
943 brcmf_sdiod_host_fixup(sdiodev
->func2
->card
->host
);
946 brcmf_sdiod_remove(sdiodev
);
951 #define BRCMF_SDIO_DEVICE(dev_id) \
952 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)}
954 /* devices we support, null terminated */
955 static const struct sdio_device_id brcmf_sdmmc_ids
[] = {
956 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143
),
957 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241
),
958 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329
),
959 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330
),
960 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334
),
961 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340
),
962 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341
),
963 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362
),
964 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43364
),
965 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339
),
966 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4339
),
967 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430
),
968 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345
),
969 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43455
),
970 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354
),
971 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4356
),
972 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_CYPRESS_4373
),
973 { /* end: all zeroes */ }
975 MODULE_DEVICE_TABLE(sdio
, brcmf_sdmmc_ids
);
978 static void brcmf_sdiod_acpi_set_power_manageable(struct device
*dev
,
981 #if IS_ENABLED(CONFIG_ACPI)
982 struct acpi_device
*adev
;
984 adev
= ACPI_COMPANION(dev
);
986 adev
->flags
.power_manageable
= 0;
990 static int brcmf_ops_sdio_probe(struct sdio_func
*func
,
991 const struct sdio_device_id
*id
)
994 struct brcmf_sdio_dev
*sdiodev
;
995 struct brcmf_bus
*bus_if
;
998 brcmf_dbg(SDIO
, "Enter\n");
999 brcmf_dbg(SDIO
, "Class=%x\n", func
->class);
1000 brcmf_dbg(SDIO
, "sdio vendor ID: 0x%04x\n", func
->vendor
);
1001 brcmf_dbg(SDIO
, "sdio device ID: 0x%04x\n", func
->device
);
1002 brcmf_dbg(SDIO
, "Function#: %d\n", func
->num
);
1006 /* Set MMC_QUIRK_LENIENT_FN0 for this card */
1007 func
->card
->quirks
|= MMC_QUIRK_LENIENT_FN0
;
1009 /* prohibit ACPI power management for this device */
1010 brcmf_sdiod_acpi_set_power_manageable(dev
, 0);
1012 /* Consume func num 1 but dont do anything with it. */
1016 /* Ignore anything but func 2 */
1020 bus_if
= kzalloc(sizeof(struct brcmf_bus
), GFP_KERNEL
);
1023 sdiodev
= kzalloc(sizeof(struct brcmf_sdio_dev
), GFP_KERNEL
);
1029 /* store refs to functions used. mmc_card does
1030 * not hold the F0 function pointer.
1032 sdiodev
->func1
= func
->card
->sdio_func
[0];
1033 sdiodev
->func2
= func
;
1035 sdiodev
->bus_if
= bus_if
;
1036 bus_if
->bus_priv
.sdio
= sdiodev
;
1037 bus_if
->proto_type
= BRCMF_PROTO_BCDC
;
1038 dev_set_drvdata(&func
->dev
, bus_if
);
1039 dev_set_drvdata(&sdiodev
->func1
->dev
, bus_if
);
1040 sdiodev
->dev
= &sdiodev
->func1
->dev
;
1042 brcmf_sdiod_change_state(sdiodev
, BRCMF_SDIOD_DOWN
);
1044 brcmf_dbg(SDIO
, "F2 found, calling brcmf_sdiod_probe...\n");
1045 err
= brcmf_sdiod_probe(sdiodev
);
1047 brcmf_err("F2 error, probe failed %d...\n", err
);
1051 brcmf_dbg(SDIO
, "F2 init completed...\n");
1055 dev_set_drvdata(&func
->dev
, NULL
);
1056 dev_set_drvdata(&sdiodev
->func1
->dev
, NULL
);
1062 static void brcmf_ops_sdio_remove(struct sdio_func
*func
)
1064 struct brcmf_bus
*bus_if
;
1065 struct brcmf_sdio_dev
*sdiodev
;
1067 brcmf_dbg(SDIO
, "Enter\n");
1068 brcmf_dbg(SDIO
, "sdio vendor ID: 0x%04x\n", func
->vendor
);
1069 brcmf_dbg(SDIO
, "sdio device ID: 0x%04x\n", func
->device
);
1070 brcmf_dbg(SDIO
, "Function: %d\n", func
->num
);
1072 bus_if
= dev_get_drvdata(&func
->dev
);
1074 sdiodev
= bus_if
->bus_priv
.sdio
;
1076 /* start by unregistering irqs */
1077 brcmf_sdiod_intr_unregister(sdiodev
);
1082 /* only proceed with rest of cleanup if func 1 */
1083 brcmf_sdiod_remove(sdiodev
);
1085 dev_set_drvdata(&sdiodev
->func1
->dev
, NULL
);
1086 dev_set_drvdata(&sdiodev
->func2
->dev
, NULL
);
1092 brcmf_dbg(SDIO
, "Exit\n");
1095 void brcmf_sdio_wowl_config(struct device
*dev
, bool enabled
)
1097 struct brcmf_bus
*bus_if
= dev_get_drvdata(dev
);
1098 struct brcmf_sdio_dev
*sdiodev
= bus_if
->bus_priv
.sdio
;
1100 brcmf_dbg(SDIO
, "Configuring WOWL, enabled=%d\n", enabled
);
1101 sdiodev
->wowl_enabled
= enabled
;
1104 #ifdef CONFIG_PM_SLEEP
1105 static int brcmf_ops_sdio_suspend(struct device
*dev
)
1107 struct sdio_func
*func
;
1108 struct brcmf_bus
*bus_if
;
1109 struct brcmf_sdio_dev
*sdiodev
;
1110 mmc_pm_flag_t sdio_flags
;
1112 func
= container_of(dev
, struct sdio_func
, dev
);
1113 brcmf_dbg(SDIO
, "Enter: F%d\n", func
->num
);
1118 bus_if
= dev_get_drvdata(dev
);
1119 sdiodev
= bus_if
->bus_priv
.sdio
;
1121 brcmf_sdiod_freezer_on(sdiodev
);
1122 brcmf_sdio_wd_timer(sdiodev
->bus
, 0);
1124 sdio_flags
= MMC_PM_KEEP_POWER
;
1125 if (sdiodev
->wowl_enabled
) {
1126 if (sdiodev
->settings
->bus
.sdio
.oob_irq_supported
)
1127 enable_irq_wake(sdiodev
->settings
->bus
.sdio
.oob_irq_nr
);
1129 sdio_flags
|= MMC_PM_WAKE_SDIO_IRQ
;
1131 if (sdio_set_host_pm_flags(sdiodev
->func1
, sdio_flags
))
1132 brcmf_err("Failed to set pm_flags %x\n", sdio_flags
);
1136 static int brcmf_ops_sdio_resume(struct device
*dev
)
1138 struct brcmf_bus
*bus_if
= dev_get_drvdata(dev
);
1139 struct brcmf_sdio_dev
*sdiodev
= bus_if
->bus_priv
.sdio
;
1140 struct sdio_func
*func
= container_of(dev
, struct sdio_func
, dev
);
1142 brcmf_dbg(SDIO
, "Enter: F%d\n", func
->num
);
1146 brcmf_sdiod_freezer_off(sdiodev
);
1150 static const struct dev_pm_ops brcmf_sdio_pm_ops
= {
1151 .suspend
= brcmf_ops_sdio_suspend
,
1152 .resume
= brcmf_ops_sdio_resume
,
1154 #endif /* CONFIG_PM_SLEEP */
1156 static struct sdio_driver brcmf_sdmmc_driver
= {
1157 .probe
= brcmf_ops_sdio_probe
,
1158 .remove
= brcmf_ops_sdio_remove
,
1159 .name
= KBUILD_MODNAME
,
1160 .id_table
= brcmf_sdmmc_ids
,
1162 .owner
= THIS_MODULE
,
1163 #ifdef CONFIG_PM_SLEEP
1164 .pm
= &brcmf_sdio_pm_ops
,
1165 #endif /* CONFIG_PM_SLEEP */
1166 .coredump
= brcmf_dev_coredump
,
1170 void brcmf_sdio_register(void)
1174 ret
= sdio_register_driver(&brcmf_sdmmc_driver
);
1176 brcmf_err("sdio_register_driver failed: %d\n", ret
);
1179 void brcmf_sdio_exit(void)
1181 brcmf_dbg(SDIO
, "Enter\n");
1183 sdio_unregister_driver(&brcmf_sdmmc_driver
);