1 // SPDX-License-Identifier: ISC
3 * Copyright (c) 2010 Broadcom Corporation
5 /* ****************** SDIO CARD Interface Functions **************************/
7 #include <linux/types.h>
8 #include <linux/netdevice.h>
10 #include <linux/pci_ids.h>
11 #include <linux/sched.h>
12 #include <linux/completion.h>
13 #include <linux/interrupt.h>
14 #include <linux/scatterlist.h>
15 #include <linux/mmc/sdio.h>
16 #include <linux/mmc/core.h>
17 #include <linux/mmc/sdio_func.h>
18 #include <linux/mmc/card.h>
19 #include <linux/mmc/host.h>
20 #include <linux/pm_runtime.h>
21 #include <linux/suspend.h>
22 #include <linux/errno.h>
23 #include <linux/module.h>
24 #include <linux/acpi.h>
25 #include <net/cfg80211.h>
28 #include <brcm_hw_ids.h>
29 #include <brcmu_utils.h>
30 #include <brcmu_wifi.h>
31 #include <chipcommon.h>
40 #define SDIOH_API_ACCESS_RETRY_LIMIT 2
42 #define DMA_ALIGN_MASK 0x03
44 #define SDIO_FUNC1_BLOCKSIZE 64
45 #define SDIO_FUNC2_BLOCKSIZE 512
46 #define SDIO_4373_FUNC2_BLOCKSIZE 256
47 #define SDIO_435X_FUNC2_BLOCKSIZE 256
48 #define SDIO_4329_FUNC2_BLOCKSIZE 128
49 /* Maximum milliseconds to wait for F2 to come up */
50 #define SDIO_WAIT_F2RDY 3000
52 #define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */
54 struct brcmf_sdiod_freezer {
56 atomic_t thread_count;
58 wait_queue_head_t thread_freeze;
59 struct completion resumed;
62 static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id)
64 struct brcmf_bus *bus_if = dev_get_drvdata(dev_id);
65 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
67 brcmf_dbg(INTR, "OOB intr triggered\n");
69 /* out-of-band interrupt is level-triggered which won't
70 * be cleared until dpc
72 if (sdiodev->irq_en) {
73 disable_irq_nosync(irq);
74 sdiodev->irq_en = false;
77 brcmf_sdio_isr(sdiodev->bus, true);
82 static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func)
84 struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev);
85 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
87 brcmf_dbg(INTR, "IB intr triggered\n");
89 brcmf_sdio_isr(sdiodev->bus, false);
92 /* dummy handler for SDIO function 2 interrupt */
93 static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func)
97 int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev)
99 struct brcmfmac_sdio_pd *pdata;
102 u32 addr, gpiocontrol;
104 pdata = &sdiodev->settings->bus.sdio;
105 if (pdata->oob_irq_supported) {
106 brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n",
108 spin_lock_init(&sdiodev->irq_en_lock);
109 sdiodev->irq_en = true;
111 ret = request_irq(pdata->oob_irq_nr, brcmf_sdiod_oob_irqhandler,
112 pdata->oob_irq_flags, "brcmf_oob_intr",
113 &sdiodev->func1->dev);
115 brcmf_err("request_irq failed %d\n", ret);
118 sdiodev->oob_irq_requested = true;
120 ret = enable_irq_wake(pdata->oob_irq_nr);
122 brcmf_err("enable_irq_wake failed %d\n", ret);
125 disable_irq_wake(pdata->oob_irq_nr);
127 sdio_claim_host(sdiodev->func1);
129 if (sdiodev->bus_if->chip == BRCM_CC_43362_CHIP_ID) {
130 /* assign GPIO to SDIO core */
131 addr = CORE_CC_REG(SI_ENUM_BASE, gpiocontrol);
132 gpiocontrol = brcmf_sdiod_readl(sdiodev, addr, &ret);
134 brcmf_sdiod_writel(sdiodev, addr, gpiocontrol, &ret);
136 brcmf_sdiod_writeb(sdiodev, SBSDIO_GPIO_SELECT,
138 brcmf_sdiod_writeb(sdiodev, SBSDIO_GPIO_OUT, 0, &ret);
139 brcmf_sdiod_writeb(sdiodev, SBSDIO_GPIO_EN, 0x2, &ret);
142 /* must configure SDIO_CCCR_IENx to enable irq */
143 data = brcmf_sdiod_func0_rb(sdiodev, SDIO_CCCR_IENx, &ret);
144 data |= SDIO_CCCR_IEN_FUNC1 | SDIO_CCCR_IEN_FUNC2 |
146 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_IENx, data, &ret);
148 /* redirect, configure and enable io for interrupt signal */
149 data = SDIO_CCCR_BRCM_SEPINT_MASK | SDIO_CCCR_BRCM_SEPINT_OE;
150 if (pdata->oob_irq_flags & IRQF_TRIGGER_HIGH)
151 data |= SDIO_CCCR_BRCM_SEPINT_ACT_HI;
152 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_BRCM_SEPINT,
154 sdio_release_host(sdiodev->func1);
156 brcmf_dbg(SDIO, "Entering\n");
157 sdio_claim_host(sdiodev->func1);
158 sdio_claim_irq(sdiodev->func1, brcmf_sdiod_ib_irqhandler);
159 sdio_claim_irq(sdiodev->func2, brcmf_sdiod_dummy_irqhandler);
160 sdio_release_host(sdiodev->func1);
161 sdiodev->sd_irq_requested = true;
167 void brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
170 brcmf_dbg(SDIO, "Entering oob=%d sd=%d\n",
171 sdiodev->oob_irq_requested,
172 sdiodev->sd_irq_requested);
174 if (sdiodev->oob_irq_requested) {
175 struct brcmfmac_sdio_pd *pdata;
177 pdata = &sdiodev->settings->bus.sdio;
178 sdio_claim_host(sdiodev->func1);
179 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
180 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
181 sdio_release_host(sdiodev->func1);
183 sdiodev->oob_irq_requested = false;
184 free_irq(pdata->oob_irq_nr, &sdiodev->func1->dev);
185 sdiodev->irq_en = false;
186 sdiodev->oob_irq_requested = false;
189 if (sdiodev->sd_irq_requested) {
190 sdio_claim_host(sdiodev->func1);
191 sdio_release_irq(sdiodev->func2);
192 sdio_release_irq(sdiodev->func1);
193 sdio_release_host(sdiodev->func1);
194 sdiodev->sd_irq_requested = false;
198 void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev,
199 enum brcmf_sdiod_state state)
201 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM ||
202 state == sdiodev->state)
205 brcmf_dbg(TRACE, "%d -> %d\n", sdiodev->state, state);
206 switch (sdiodev->state) {
207 case BRCMF_SDIOD_DATA:
208 /* any other state means bus interface is down */
209 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN);
211 case BRCMF_SDIOD_DOWN:
212 /* transition from DOWN to DATA means bus interface is up */
213 if (state == BRCMF_SDIOD_DATA)
214 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_UP);
219 sdiodev->state = state;
222 static int brcmf_sdiod_set_backplane_window(struct brcmf_sdio_dev *sdiodev,
225 u32 v, bar0 = addr & SBSDIO_SBWINDOW_MASK;
228 if (bar0 == sdiodev->sbwad)
233 for (i = 0 ; i < 3 && !err ; i++, v >>= 8)
234 brcmf_sdiod_writeb(sdiodev, SBSDIO_FUNC1_SBADDRLOW + i,
238 sdiodev->sbwad = bar0;
243 u32 brcmf_sdiod_readl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
248 retval = brcmf_sdiod_set_backplane_window(sdiodev, addr);
252 addr &= SBSDIO_SB_OFT_ADDR_MASK;
253 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
255 data = sdio_readl(sdiodev->func1, addr, &retval);
264 void brcmf_sdiod_writel(struct brcmf_sdio_dev *sdiodev, u32 addr,
269 retval = brcmf_sdiod_set_backplane_window(sdiodev, addr);
273 addr &= SBSDIO_SB_OFT_ADDR_MASK;
274 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
276 sdio_writel(sdiodev->func1, data, addr, &retval);
283 static int brcmf_sdiod_skbuff_read(struct brcmf_sdio_dev *sdiodev,
284 struct sdio_func *func, u32 addr,
290 /* Single skb use the standard mmc interface */
291 req_sz = skb->len + 3;
296 err = sdio_memcpy_fromio(func, ((u8 *)(skb->data)), addr,
300 err = sdio_readsb(func, ((u8 *)(skb->data)), addr, req_sz);
303 /* bail out as things are really fishy here */
304 WARN(1, "invalid sdio function number: %d\n", func->num);
308 if (err == -ENOMEDIUM)
309 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
314 static int brcmf_sdiod_skbuff_write(struct brcmf_sdio_dev *sdiodev,
315 struct sdio_func *func, u32 addr,
321 /* Single skb use the standard mmc interface */
322 req_sz = skb->len + 3;
325 err = sdio_memcpy_toio(func, addr, ((u8 *)(skb->data)), req_sz);
327 if (err == -ENOMEDIUM)
328 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
333 static int mmc_submit_one(struct mmc_data *md, struct mmc_request *mr,
334 struct mmc_command *mc, int sg_cnt, int req_sz,
335 int func_blk_sz, u32 *addr,
336 struct brcmf_sdio_dev *sdiodev,
337 struct sdio_func *func, int write)
342 md->blocks = req_sz / func_blk_sz;
343 mc->arg |= (*addr & 0x1FFFF) << 9; /* address */
344 mc->arg |= md->blocks & 0x1FF; /* block count */
345 /* incrementing addr for function 1 */
349 mmc_set_data_timeout(md, func->card);
350 mmc_wait_for_req(func->card->host, mr);
352 ret = mc->error ? mc->error : md->error;
353 if (ret == -ENOMEDIUM) {
354 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
355 } else if (ret != 0) {
356 brcmf_err("CMD53 sg block %s failed %d\n",
357 write ? "write" : "read", ret);
365 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access
366 * @sdiodev: brcmfmac sdio device
367 * @func: SDIO function
368 * @write: direction flag
369 * @addr: dongle memory address as source/destination
370 * @pktlist: skb buffer head pointer
372 * This function takes the respbonsibility as the interface function to MMC
373 * stack for block data access. It assumes that the skb passed down by the
374 * caller has already been padded and aligned.
376 static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev,
377 struct sdio_func *func,
378 bool write, u32 addr,
379 struct sk_buff_head *pktlist)
381 unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset;
382 unsigned int max_req_sz, src_offset, dst_offset;
383 unsigned char *pkt_data, *orig_data, *dst_data;
384 struct sk_buff_head local_list, *target_list;
385 struct sk_buff *pkt_next = NULL, *src;
386 unsigned short max_seg_cnt;
387 struct mmc_request mmc_req;
388 struct mmc_command mmc_cmd;
389 struct mmc_data mmc_dat;
390 struct scatterlist *sgl;
396 target_list = pktlist;
397 /* for host with broken sg support, prepare a page aligned list */
398 __skb_queue_head_init(&local_list);
399 if (!write && sdiodev->settings->bus.sdio.broken_sg_support) {
401 skb_queue_walk(pktlist, pkt_next)
402 req_sz += pkt_next->len;
403 req_sz = ALIGN(req_sz, func->cur_blksize);
404 while (req_sz > PAGE_SIZE) {
405 pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE);
406 if (pkt_next == NULL) {
410 __skb_queue_tail(&local_list, pkt_next);
413 pkt_next = brcmu_pkt_buf_get_skb(req_sz);
414 if (pkt_next == NULL) {
418 __skb_queue_tail(&local_list, pkt_next);
419 target_list = &local_list;
422 func_blk_sz = func->cur_blksize;
423 max_req_sz = sdiodev->max_request_size;
424 max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count,
427 memset(&mmc_req, 0, sizeof(struct mmc_request));
428 memset(&mmc_cmd, 0, sizeof(struct mmc_command));
429 memset(&mmc_dat, 0, sizeof(struct mmc_data));
431 mmc_dat.sg = sdiodev->sgtable.sgl;
432 mmc_dat.blksz = func_blk_sz;
433 mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
434 mmc_cmd.opcode = SD_IO_RW_EXTENDED;
435 mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */
436 mmc_cmd.arg |= (func->num & 0x7) << 28; /* SDIO func num */
437 mmc_cmd.arg |= 1 << 27; /* block mode */
438 /* for function 1 the addr will be incremented */
439 mmc_cmd.arg |= (func->num == 1) ? 1 << 26 : 0;
440 mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
441 mmc_req.cmd = &mmc_cmd;
442 mmc_req.data = &mmc_dat;
446 sgl = sdiodev->sgtable.sgl;
447 skb_queue_walk(target_list, pkt_next) {
449 while (pkt_offset < pkt_next->len) {
450 pkt_data = pkt_next->data + pkt_offset;
451 sg_data_sz = pkt_next->len - pkt_offset;
452 if (sg_data_sz > sdiodev->max_segment_size)
453 sg_data_sz = sdiodev->max_segment_size;
454 if (sg_data_sz > max_req_sz - req_sz)
455 sg_data_sz = max_req_sz - req_sz;
457 sg_set_buf(sgl, pkt_data, sg_data_sz);
461 req_sz += sg_data_sz;
462 pkt_offset += sg_data_sz;
463 if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt) {
464 ret = mmc_submit_one(&mmc_dat, &mmc_req, &mmc_cmd,
465 sg_cnt, req_sz, func_blk_sz,
466 &addr, sdiodev, func, write);
468 goto exit_queue_walk;
471 sgl = sdiodev->sgtable.sgl;
476 ret = mmc_submit_one(&mmc_dat, &mmc_req, &mmc_cmd,
477 sg_cnt, req_sz, func_blk_sz,
478 &addr, sdiodev, func, write);
480 if (!write && sdiodev->settings->bus.sdio.broken_sg_support) {
481 src = __skb_peek(&local_list);
483 skb_queue_walk(pktlist, pkt_next) {
486 /* This is safe because we must have enough SKB data
487 * in the local list to cover everything in pktlist.
490 req_sz = pkt_next->len - dst_offset;
491 if (req_sz > src->len - src_offset)
492 req_sz = src->len - src_offset;
494 orig_data = src->data + src_offset;
495 dst_data = pkt_next->data + dst_offset;
496 memcpy(dst_data, orig_data, req_sz);
498 src_offset += req_sz;
499 if (src_offset == src->len) {
501 src = skb_peek_next(src, &local_list);
503 dst_offset += req_sz;
504 if (dst_offset == pkt_next->len)
511 sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents);
512 while ((pkt_next = __skb_dequeue(&local_list)) != NULL)
513 brcmu_pkt_buf_free_skb(pkt_next);
518 int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
520 struct sk_buff *mypkt;
523 mypkt = brcmu_pkt_buf_get_skb(nbytes);
525 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
530 err = brcmf_sdiod_recv_pkt(sdiodev, mypkt);
532 memcpy(buf, mypkt->data, nbytes);
534 brcmu_pkt_buf_free_skb(mypkt);
538 int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt)
540 u32 addr = sdiodev->cc_core->base;
543 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len);
545 err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
549 addr &= SBSDIO_SB_OFT_ADDR_MASK;
550 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
552 err = brcmf_sdiod_skbuff_read(sdiodev, sdiodev->func2, addr, pkt);
558 int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
559 struct sk_buff_head *pktq, uint totlen)
561 struct sk_buff *glom_skb = NULL;
563 u32 addr = sdiodev->cc_core->base;
566 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n",
569 err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
573 addr &= SBSDIO_SB_OFT_ADDR_MASK;
574 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
577 err = brcmf_sdiod_skbuff_read(sdiodev, sdiodev->func2, addr,
579 else if (!sdiodev->sg_support) {
580 glom_skb = brcmu_pkt_buf_get_skb(totlen);
583 err = brcmf_sdiod_skbuff_read(sdiodev, sdiodev->func2, addr,
588 skb_queue_walk(pktq, skb) {
589 memcpy(skb->data, glom_skb->data, skb->len);
590 skb_pull(glom_skb, skb->len);
593 err = brcmf_sdiod_sglist_rw(sdiodev, sdiodev->func2, false,
597 brcmu_pkt_buf_free_skb(glom_skb);
601 int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
603 struct sk_buff *mypkt;
604 u32 addr = sdiodev->cc_core->base;
607 mypkt = brcmu_pkt_buf_get_skb(nbytes);
610 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
615 memcpy(mypkt->data, buf, nbytes);
617 err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
621 addr &= SBSDIO_SB_OFT_ADDR_MASK;
622 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
624 err = brcmf_sdiod_skbuff_write(sdiodev, sdiodev->func2, addr, mypkt);
626 brcmu_pkt_buf_free_skb(mypkt);
631 int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
632 struct sk_buff_head *pktq)
635 u32 addr = sdiodev->cc_core->base;
638 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen);
640 err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
644 addr &= SBSDIO_SB_OFT_ADDR_MASK;
645 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
647 if (pktq->qlen == 1 || !sdiodev->sg_support) {
648 skb_queue_walk(pktq, skb) {
649 err = brcmf_sdiod_skbuff_write(sdiodev, sdiodev->func2,
655 err = brcmf_sdiod_sglist_rw(sdiodev, sdiodev->func2, true,
663 brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
671 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
672 pkt = dev_alloc_skb(dsize);
674 brcmf_err("dev_alloc_skb failed: len %d\n", dsize);
679 /* Determine initial transfer parameters */
680 sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK;
681 if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK)
682 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr);
686 sdio_claim_host(sdiodev->func1);
688 /* Do the transfer(s) */
690 /* Set the backplane window to include the start address */
691 err = brcmf_sdiod_set_backplane_window(sdiodev, address);
695 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n",
696 write ? "write" : "read", dsize,
697 sdaddr, address & SBSDIO_SBWINDOW_MASK);
699 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK;
700 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
705 memcpy(pkt->data, data, dsize);
706 err = brcmf_sdiod_skbuff_write(sdiodev, sdiodev->func1,
709 err = brcmf_sdiod_skbuff_read(sdiodev, sdiodev->func1,
714 brcmf_err("membytes transfer failed\n");
718 memcpy(data, pkt->data, dsize);
721 /* Adjust for next transfer (if any) */
727 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
733 sdio_release_host(sdiodev->func1);
738 int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, struct sdio_func *func)
740 brcmf_dbg(SDIO, "Enter\n");
742 /* Issue abort cmd52 command through F0 */
743 brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_ABORT, func->num, NULL);
745 brcmf_dbg(SDIO, "Exit\n");
749 void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev)
751 struct sdio_func *func;
752 struct mmc_host *host;
757 func = sdiodev->func2;
758 host = func->card->host;
759 sdiodev->sg_support = host->max_segs > 1;
760 max_blocks = min_t(uint, host->max_blk_count, 511u);
761 sdiodev->max_request_size = min_t(uint, host->max_req_size,
762 max_blocks * func->cur_blksize);
763 sdiodev->max_segment_count = min_t(uint, host->max_segs,
764 SG_MAX_SINGLE_ALLOC);
765 sdiodev->max_segment_size = host->max_seg_size;
767 if (!sdiodev->sg_support)
770 nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE,
771 sdiodev->settings->bus.sdio.txglomsz);
772 nents += (nents >> 4) + 1;
774 WARN_ON(nents > sdiodev->max_segment_count);
776 brcmf_dbg(TRACE, "nents=%d\n", nents);
777 err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL);
779 brcmf_err("allocation failed: disable scatter-gather");
780 sdiodev->sg_support = false;
783 sdiodev->txglomsz = sdiodev->settings->bus.sdio.txglomsz;
786 #ifdef CONFIG_PM_SLEEP
787 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev)
789 sdiodev->freezer = kzalloc(sizeof(*sdiodev->freezer), GFP_KERNEL);
790 if (!sdiodev->freezer)
792 atomic_set(&sdiodev->freezer->thread_count, 0);
793 atomic_set(&sdiodev->freezer->freezing, 0);
794 init_waitqueue_head(&sdiodev->freezer->thread_freeze);
795 init_completion(&sdiodev->freezer->resumed);
799 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev)
801 if (sdiodev->freezer) {
802 WARN_ON(atomic_read(&sdiodev->freezer->freezing));
803 kfree(sdiodev->freezer);
807 static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev *sdiodev)
809 atomic_t *expect = &sdiodev->freezer->thread_count;
812 sdiodev->freezer->frozen_count = 0;
813 reinit_completion(&sdiodev->freezer->resumed);
814 atomic_set(&sdiodev->freezer->freezing, 1);
815 brcmf_sdio_trigger_dpc(sdiodev->bus);
816 wait_event(sdiodev->freezer->thread_freeze,
817 atomic_read(expect) == sdiodev->freezer->frozen_count);
818 sdio_claim_host(sdiodev->func1);
819 res = brcmf_sdio_sleep(sdiodev->bus, true);
820 sdio_release_host(sdiodev->func1);
824 static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev *sdiodev)
826 sdio_claim_host(sdiodev->func1);
827 brcmf_sdio_sleep(sdiodev->bus, false);
828 sdio_release_host(sdiodev->func1);
829 atomic_set(&sdiodev->freezer->freezing, 0);
830 complete_all(&sdiodev->freezer->resumed);
833 bool brcmf_sdiod_freezing(struct brcmf_sdio_dev *sdiodev)
835 return atomic_read(&sdiodev->freezer->freezing);
838 void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev *sdiodev)
840 if (!brcmf_sdiod_freezing(sdiodev))
842 sdiodev->freezer->frozen_count++;
843 wake_up(&sdiodev->freezer->thread_freeze);
844 wait_for_completion(&sdiodev->freezer->resumed);
847 void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev *sdiodev)
849 atomic_inc(&sdiodev->freezer->thread_count);
852 void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev *sdiodev)
854 atomic_dec(&sdiodev->freezer->thread_count);
857 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev)
862 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev)
865 #endif /* CONFIG_PM_SLEEP */
867 int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev)
869 sdiodev->state = BRCMF_SDIOD_DOWN;
871 brcmf_sdio_remove(sdiodev->bus);
875 brcmf_sdiod_freezer_detach(sdiodev);
877 /* Disable Function 2 */
878 sdio_claim_host(sdiodev->func2);
879 sdio_disable_func(sdiodev->func2);
880 sdio_release_host(sdiodev->func2);
882 /* Disable Function 1 */
883 sdio_claim_host(sdiodev->func1);
884 sdio_disable_func(sdiodev->func1);
885 sdio_release_host(sdiodev->func1);
887 sg_free_table(&sdiodev->sgtable);
890 pm_runtime_allow(sdiodev->func1->card->host->parent);
894 static void brcmf_sdiod_host_fixup(struct mmc_host *host)
896 /* runtime-pm powers off the device */
897 pm_runtime_forbid(host->parent);
898 /* avoid removal detection upon resume */
899 host->caps |= MMC_CAP_NONREMOVABLE;
902 int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev)
905 unsigned int f2_blksz = SDIO_FUNC2_BLOCKSIZE;
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 switch (sdiodev->func2->device) {
916 case SDIO_DEVICE_ID_BROADCOM_CYPRESS_4373:
917 f2_blksz = SDIO_4373_FUNC2_BLOCKSIZE;
919 case SDIO_DEVICE_ID_BROADCOM_4359:
920 case SDIO_DEVICE_ID_BROADCOM_4354:
921 case SDIO_DEVICE_ID_BROADCOM_4356:
922 f2_blksz = SDIO_435X_FUNC2_BLOCKSIZE;
924 case SDIO_DEVICE_ID_BROADCOM_4329:
925 f2_blksz = SDIO_4329_FUNC2_BLOCKSIZE;
931 ret = sdio_set_block_size(sdiodev->func2, f2_blksz);
933 brcmf_err("Failed to set F2 blocksize\n");
934 sdio_release_host(sdiodev->func1);
937 brcmf_dbg(SDIO, "set F2 blocksize to %d\n", f2_blksz);
940 /* increase F2 timeout */
941 sdiodev->func2->enable_timeout = SDIO_WAIT_F2RDY;
943 /* Enable Function 1 */
944 ret = sdio_enable_func(sdiodev->func1);
945 sdio_release_host(sdiodev->func1);
947 brcmf_err("Failed to enable F1: err=%d\n", ret);
951 ret = brcmf_sdiod_freezer_attach(sdiodev);
955 /* try to attach to the target device */
956 sdiodev->bus = brcmf_sdio_probe(sdiodev);
961 brcmf_sdiod_host_fixup(sdiodev->func2->card->host);
964 brcmf_sdiod_remove(sdiodev);
969 #define BRCMF_SDIO_DEVICE(dev_id) \
970 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)}
972 /* devices we support, null terminated */
973 static const struct sdio_device_id brcmf_sdmmc_ids[] = {
974 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143),
975 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241),
976 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329),
977 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330),
978 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334),
979 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340),
980 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341),
981 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362),
982 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43364),
983 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339),
984 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4339),
985 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430),
986 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345),
987 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43455),
988 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354),
989 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4356),
990 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4359),
991 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_4373),
992 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_43012),
993 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_89359),
994 { /* end: all zeroes */ }
996 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
999 static void brcmf_sdiod_acpi_set_power_manageable(struct device *dev,
1002 #if IS_ENABLED(CONFIG_ACPI)
1003 struct acpi_device *adev;
1005 adev = ACPI_COMPANION(dev);
1007 adev->flags.power_manageable = 0;
1011 static int brcmf_ops_sdio_probe(struct sdio_func *func,
1012 const struct sdio_device_id *id)
1015 struct brcmf_sdio_dev *sdiodev;
1016 struct brcmf_bus *bus_if;
1019 brcmf_dbg(SDIO, "Enter\n");
1020 brcmf_dbg(SDIO, "Class=%x\n", func->class);
1021 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1022 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1023 brcmf_dbg(SDIO, "Function#: %d\n", func->num);
1027 /* Set MMC_QUIRK_LENIENT_FN0 for this card */
1028 func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
1030 /* prohibit ACPI power management for this device */
1031 brcmf_sdiod_acpi_set_power_manageable(dev, 0);
1033 /* Consume func num 1 but dont do anything with it. */
1037 /* Ignore anything but func 2 */
1041 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
1044 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
1050 /* store refs to functions used. mmc_card does
1051 * not hold the F0 function pointer.
1053 sdiodev->func1 = func->card->sdio_func[0];
1054 sdiodev->func2 = func;
1056 sdiodev->bus_if = bus_if;
1057 bus_if->bus_priv.sdio = sdiodev;
1058 bus_if->proto_type = BRCMF_PROTO_BCDC;
1059 dev_set_drvdata(&func->dev, bus_if);
1060 dev_set_drvdata(&sdiodev->func1->dev, bus_if);
1061 sdiodev->dev = &sdiodev->func1->dev;
1063 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN);
1065 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n");
1066 err = brcmf_sdiod_probe(sdiodev);
1068 brcmf_err("F2 error, probe failed %d...\n", err);
1072 brcmf_dbg(SDIO, "F2 init completed...\n");
1076 dev_set_drvdata(&func->dev, NULL);
1077 dev_set_drvdata(&sdiodev->func1->dev, NULL);
1083 static void brcmf_ops_sdio_remove(struct sdio_func *func)
1085 struct brcmf_bus *bus_if;
1086 struct brcmf_sdio_dev *sdiodev;
1088 brcmf_dbg(SDIO, "Enter\n");
1089 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1090 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1091 brcmf_dbg(SDIO, "Function: %d\n", func->num);
1093 bus_if = dev_get_drvdata(&func->dev);
1095 sdiodev = bus_if->bus_priv.sdio;
1097 /* start by unregistering irqs */
1098 brcmf_sdiod_intr_unregister(sdiodev);
1103 /* only proceed with rest of cleanup if func 1 */
1104 brcmf_sdiod_remove(sdiodev);
1106 dev_set_drvdata(&sdiodev->func1->dev, NULL);
1107 dev_set_drvdata(&sdiodev->func2->dev, NULL);
1113 brcmf_dbg(SDIO, "Exit\n");
1116 void brcmf_sdio_wowl_config(struct device *dev, bool enabled)
1118 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1119 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1121 brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled);
1122 sdiodev->wowl_enabled = enabled;
1125 #ifdef CONFIG_PM_SLEEP
1126 static int brcmf_ops_sdio_suspend(struct device *dev)
1128 struct sdio_func *func;
1129 struct brcmf_bus *bus_if;
1130 struct brcmf_sdio_dev *sdiodev;
1131 mmc_pm_flag_t pm_caps, sdio_flags;
1134 func = container_of(dev, struct sdio_func, dev);
1135 brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1140 bus_if = dev_get_drvdata(dev);
1141 sdiodev = bus_if->bus_priv.sdio;
1143 pm_caps = sdio_get_host_pm_caps(func);
1145 if (pm_caps & MMC_PM_KEEP_POWER) {
1146 /* preserve card power during suspend */
1147 brcmf_sdiod_freezer_on(sdiodev);
1148 brcmf_sdio_wd_timer(sdiodev->bus, 0);
1150 sdio_flags = MMC_PM_KEEP_POWER;
1151 if (sdiodev->wowl_enabled) {
1152 if (sdiodev->settings->bus.sdio.oob_irq_supported)
1153 enable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr);
1155 sdio_flags |= MMC_PM_WAKE_SDIO_IRQ;
1158 if (sdio_set_host_pm_flags(sdiodev->func1, sdio_flags))
1159 brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
1162 /* power will be cut so remove device, probe again in resume */
1163 brcmf_sdiod_intr_unregister(sdiodev);
1164 ret = brcmf_sdiod_remove(sdiodev);
1166 brcmf_err("Failed to remove device on suspend\n");
1172 static int brcmf_ops_sdio_resume(struct device *dev)
1174 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1175 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1176 struct sdio_func *func = container_of(dev, struct sdio_func, dev);
1177 mmc_pm_flag_t pm_caps = sdio_get_host_pm_caps(func);
1180 brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1184 if (!(pm_caps & MMC_PM_KEEP_POWER)) {
1185 /* bus was powered off and device removed, probe again */
1186 ret = brcmf_sdiod_probe(sdiodev);
1188 brcmf_err("Failed to probe device on resume\n");
1190 if (sdiodev->wowl_enabled &&
1191 sdiodev->settings->bus.sdio.oob_irq_supported)
1192 disable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr);
1194 brcmf_sdiod_freezer_off(sdiodev);
1200 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
1201 .suspend = brcmf_ops_sdio_suspend,
1202 .resume = brcmf_ops_sdio_resume,
1204 #endif /* CONFIG_PM_SLEEP */
1206 static struct sdio_driver brcmf_sdmmc_driver = {
1207 .probe = brcmf_ops_sdio_probe,
1208 .remove = brcmf_ops_sdio_remove,
1209 .name = KBUILD_MODNAME,
1210 .id_table = brcmf_sdmmc_ids,
1212 .owner = THIS_MODULE,
1213 #ifdef CONFIG_PM_SLEEP
1214 .pm = &brcmf_sdio_pm_ops,
1215 #endif /* CONFIG_PM_SLEEP */
1216 .coredump = brcmf_dev_coredump,
1220 int brcmf_sdio_register(void)
1222 return sdio_register_driver(&brcmf_sdmmc_driver);
1225 void brcmf_sdio_exit(void)
1227 brcmf_dbg(SDIO, "Enter\n");
1229 sdio_unregister_driver(&brcmf_sdmmc_driver);