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/sdio_ids.h>
29 #include <linux/mmc/card.h>
30 #include <linux/mmc/host.h>
31 #include <linux/platform_device.h>
32 #include <linux/platform_data/brcmfmac-sdio.h>
33 #include <linux/suspend.h>
34 #include <linux/errno.h>
35 #include <linux/module.h>
36 #include <net/cfg80211.h>
39 #include <brcm_hw_ids.h>
40 #include <brcmu_utils.h>
41 #include <brcmu_wifi.h>
45 #include "sdio_host.h"
46 #include "sdio_chip.h"
48 #define SDIOH_API_ACCESS_RETRY_LIMIT 2
50 #define DMA_ALIGN_MASK 0x03
52 #define SDIO_FUNC1_BLOCKSIZE 64
53 #define SDIO_FUNC2_BLOCKSIZE 512
54 /* Maximum milliseconds to wait for F2 to come up */
55 #define SDIO_WAIT_F2RDY 3000
58 static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id)
60 struct brcmf_bus *bus_if = dev_get_drvdata(dev_id);
61 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
63 brcmf_dbg(INTR, "OOB intr triggered\n");
65 /* out-of-band interrupt is level-triggered which won't
66 * be cleared until dpc
68 if (sdiodev->irq_en) {
69 disable_irq_nosync(irq);
70 sdiodev->irq_en = false;
73 brcmf_sdio_isr(sdiodev->bus);
78 static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func)
80 struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev);
81 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
83 brcmf_dbg(INTR, "IB intr triggered\n");
85 brcmf_sdio_isr(sdiodev->bus);
88 /* dummy handler for SDIO function 2 interrupt */
89 static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func)
93 static bool brcmf_sdiod_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
96 #ifdef CONFIG_PM_SLEEP
97 is_err = atomic_read(&sdiodev->suspend);
102 static void brcmf_sdiod_pm_resume_wait(struct brcmf_sdio_dev *sdiodev,
103 wait_queue_head_t *wq)
105 #ifdef CONFIG_PM_SLEEP
107 while (atomic_read(&sdiodev->suspend) && retry++ != 30)
108 wait_event_timeout(*wq, false, HZ/100);
112 int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev)
118 if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) {
119 brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n",
120 sdiodev->pdata->oob_irq_nr);
121 ret = request_irq(sdiodev->pdata->oob_irq_nr,
122 brcmf_sdiod_oob_irqhandler,
123 sdiodev->pdata->oob_irq_flags,
125 &sdiodev->func[1]->dev);
127 brcmf_err("request_irq failed %d\n", ret);
130 sdiodev->oob_irq_requested = true;
131 spin_lock_init(&sdiodev->irq_en_lock);
132 spin_lock_irqsave(&sdiodev->irq_en_lock, flags);
133 sdiodev->irq_en = true;
134 spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags);
136 ret = enable_irq_wake(sdiodev->pdata->oob_irq_nr);
138 brcmf_err("enable_irq_wake failed %d\n", ret);
141 sdiodev->irq_wake = true;
143 sdio_claim_host(sdiodev->func[1]);
145 /* must configure SDIO_CCCR_IENx to enable irq */
146 data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret);
147 data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1;
148 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret);
150 /* redirect, configure and enable io for interrupt signal */
151 data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE;
152 if (sdiodev->pdata->oob_irq_flags & IRQF_TRIGGER_HIGH)
153 data |= SDIO_SEPINT_ACT_HI;
154 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret);
156 sdio_release_host(sdiodev->func[1]);
158 brcmf_dbg(SDIO, "Entering\n");
159 sdio_claim_host(sdiodev->func[1]);
160 sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler);
161 sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler);
162 sdio_release_host(sdiodev->func[1]);
168 int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
170 brcmf_dbg(SDIO, "Entering\n");
172 if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) {
173 sdio_claim_host(sdiodev->func[1]);
174 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
175 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
176 sdio_release_host(sdiodev->func[1]);
178 if (sdiodev->oob_irq_requested) {
179 sdiodev->oob_irq_requested = false;
180 if (sdiodev->irq_wake) {
181 disable_irq_wake(sdiodev->pdata->oob_irq_nr);
182 sdiodev->irq_wake = false;
184 free_irq(sdiodev->pdata->oob_irq_nr,
185 &sdiodev->func[1]->dev);
186 sdiodev->irq_en = false;
189 sdio_claim_host(sdiodev->func[1]);
190 sdio_release_irq(sdiodev->func[2]);
191 sdio_release_irq(sdiodev->func[1]);
192 sdio_release_host(sdiodev->func[1]);
198 static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func,
199 uint regaddr, u8 byte)
204 * Can only directly write to some F0 registers.
205 * Handle CCCR_IENx and CCCR_ABORT command
208 if ((regaddr == SDIO_CCCR_ABORT) ||
209 (regaddr == SDIO_CCCR_IENx))
210 sdio_writeb(func, byte, regaddr, &err_ret);
212 sdio_f0_writeb(func, byte, regaddr, &err_ret);
217 static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn,
218 u32 addr, u8 regsz, void *data, bool write)
220 struct sdio_func *func;
223 brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
224 write, fn, addr, regsz);
226 brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
227 if (brcmf_sdiod_pm_resume_error(sdiodev))
230 /* only allow byte access on F0 */
231 if (WARN_ON(regsz > 1 && !fn))
233 func = sdiodev->func[fn];
239 sdio_writeb(func, *(u8 *)data, addr, &ret);
241 ret = brcmf_sdiod_f0_writeb(func, addr,
245 *(u8 *)data = sdio_readb(func, addr, &ret);
247 *(u8 *)data = sdio_f0_readb(func, addr, &ret);
252 sdio_writew(func, *(u16 *)data, addr, &ret);
254 *(u16 *)data = sdio_readw(func, addr, &ret);
258 sdio_writel(func, *(u32 *)data, addr, &ret);
260 *(u32 *)data = sdio_readl(func, addr, &ret);
263 brcmf_err("invalid size: %d\n", regsz);
269 * SleepCSR register access can fail when
270 * waking up the device so reduce this noise
273 if (addr != SBSDIO_FUNC1_SLEEPCSR)
274 brcmf_err("failed to %s data F%d@0x%05x, err: %d\n",
275 write ? "write" : "read", fn, addr, ret);
277 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
278 write ? "write" : "read", fn, addr, ret);
283 static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
284 u8 regsz, void *data, bool write)
291 * figure out how to read the register based on address range
292 * 0x00 ~ 0x7FF: function 0 CCCR and FBR
293 * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
294 * The rest: function 1 silicon backplane core registers
296 if ((addr & ~REG_F0_REG_MASK) == 0)
297 func_num = SDIO_FUNC_0;
299 func_num = SDIO_FUNC_1;
303 memset(data, 0, regsz);
304 /* for retry wait for 1 ms till bus get settled down */
306 usleep_range(1000, 2000);
307 ret = brcmf_sdiod_request_data(sdiodev, func_num, addr, regsz,
309 } while (ret != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
312 brcmf_err("failed with %d\n", ret);
318 brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
323 addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
324 addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK;
325 addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK;
327 for (i = 0; i < 3; i++) {
328 err = brcmf_sdiod_regrw_helper(sdiodev,
329 SBSDIO_FUNC1_SBADDRLOW + i,
330 sizeof(u8), &addr[i], true);
332 brcmf_err("failed at addr: 0x%0x\n",
333 SBSDIO_FUNC1_SBADDRLOW + i);
342 brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr)
344 uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
347 if (bar0 != sdiodev->sbwad) {
348 err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0);
352 sdiodev->sbwad = bar0;
355 *addr &= SBSDIO_SB_OFT_ADDR_MASK;
358 *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
363 u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
368 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
369 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
371 brcmf_dbg(SDIO, "data:0x%02x\n", data);
379 u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
384 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
385 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
388 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
390 brcmf_dbg(SDIO, "data:0x%08x\n", data);
399 void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
404 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data);
405 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
411 void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
416 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data);
417 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
420 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
428 static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn,
429 bool write, u32 addr, struct sk_buff *pkt)
433 brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
434 if (brcmf_sdiod_pm_resume_error(sdiodev))
437 /* Single skb use the standard mmc interface */
438 req_sz = pkt->len + 3;
442 return sdio_memcpy_toio(sdiodev->func[fn], addr,
446 return sdio_memcpy_fromio(sdiodev->func[fn],
450 /* function 2 read is FIFO operation */
451 return sdio_readsb(sdiodev->func[fn],
452 ((u8 *)(pkt->data)), addr,
457 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access
458 * @sdiodev: brcmfmac sdio device
459 * @fn: SDIO function number
460 * @write: direction flag
461 * @addr: dongle memory address as source/destination
464 * This function takes the respbonsibility as the interface function to MMC
465 * stack for block data access. It assumes that the skb passed down by the
466 * caller has already been padded and aligned.
468 static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn,
469 bool write, u32 addr,
470 struct sk_buff_head *pktlist)
472 unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset;
473 unsigned int max_req_sz, orig_offset, dst_offset;
474 unsigned short max_seg_cnt, seg_sz;
475 unsigned char *pkt_data, *orig_data, *dst_data;
476 struct sk_buff *pkt_next = NULL, *local_pkt_next;
477 struct sk_buff_head local_list, *target_list;
478 struct mmc_request mmc_req;
479 struct mmc_command mmc_cmd;
480 struct mmc_data mmc_dat;
482 struct scatterlist *sgl;
488 brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
489 if (brcmf_sdiod_pm_resume_error(sdiodev))
492 target_list = pktlist;
493 /* for host with broken sg support, prepare a page aligned list */
494 __skb_queue_head_init(&local_list);
495 if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) {
497 skb_queue_walk(pktlist, pkt_next)
498 req_sz += pkt_next->len;
499 req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize);
500 while (req_sz > PAGE_SIZE) {
501 pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE);
502 if (pkt_next == NULL) {
506 __skb_queue_tail(&local_list, pkt_next);
509 pkt_next = brcmu_pkt_buf_get_skb(req_sz);
510 if (pkt_next == NULL) {
514 __skb_queue_tail(&local_list, pkt_next);
515 target_list = &local_list;
518 func_blk_sz = sdiodev->func[fn]->cur_blksize;
519 max_req_sz = sdiodev->max_request_size;
520 max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count,
522 seg_sz = target_list->qlen;
524 pkt_next = target_list->next;
526 if (sg_alloc_table(&st, max_seg_cnt, GFP_KERNEL)) {
531 memset(&mmc_req, 0, sizeof(struct mmc_request));
532 memset(&mmc_cmd, 0, sizeof(struct mmc_command));
533 memset(&mmc_dat, 0, sizeof(struct mmc_data));
536 mmc_dat.blksz = func_blk_sz;
537 mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
538 mmc_cmd.opcode = SD_IO_RW_EXTENDED;
539 mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */
540 mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */
541 mmc_cmd.arg |= 1<<27; /* block mode */
542 /* for function 1 the addr will be incremented */
543 mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0;
544 mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
545 mmc_req.cmd = &mmc_cmd;
546 mmc_req.data = &mmc_dat;
553 while (pkt_next != (struct sk_buff *)target_list) {
554 pkt_data = pkt_next->data + pkt_offset;
555 sg_data_sz = pkt_next->len - pkt_offset;
556 if (sg_data_sz > sdiodev->max_segment_size)
557 sg_data_sz = sdiodev->max_segment_size;
558 if (sg_data_sz > max_req_sz - req_sz)
559 sg_data_sz = max_req_sz - req_sz;
561 sg_set_buf(sgl, pkt_data, sg_data_sz);
565 req_sz += sg_data_sz;
566 pkt_offset += sg_data_sz;
567 if (pkt_offset == pkt_next->len) {
569 pkt_next = pkt_next->next;
572 if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt)
577 if (req_sz % func_blk_sz != 0) {
578 brcmf_err("sg request length %u is not %u aligned\n",
579 req_sz, func_blk_sz);
584 mmc_dat.sg_len = sg_cnt;
585 mmc_dat.blocks = req_sz / func_blk_sz;
586 mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */
587 mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */
588 /* incrementing addr for function 1 */
592 mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card);
593 mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req);
595 ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error;
597 brcmf_err("CMD53 sg block %s failed %d\n",
598 write ? "write" : "read", ret);
604 if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) {
605 local_pkt_next = local_list.next;
607 skb_queue_walk(pktlist, pkt_next) {
610 req_sz = local_pkt_next->len - orig_offset;
611 req_sz = min_t(uint, pkt_next->len - dst_offset,
613 orig_data = local_pkt_next->data + orig_offset;
614 dst_data = pkt_next->data + dst_offset;
615 memcpy(dst_data, orig_data, req_sz);
616 orig_offset += req_sz;
617 dst_offset += req_sz;
618 if (orig_offset == local_pkt_next->len) {
620 local_pkt_next = local_pkt_next->next;
622 if (dst_offset == pkt_next->len)
624 } while (!skb_queue_empty(&local_list));
630 while ((pkt_next = __skb_dequeue(&local_list)) != NULL)
631 brcmu_pkt_buf_free_skb(pkt_next);
636 int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
638 struct sk_buff *mypkt;
641 mypkt = brcmu_pkt_buf_get_skb(nbytes);
643 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
648 err = brcmf_sdiod_recv_pkt(sdiodev, mypkt);
650 memcpy(buf, mypkt->data, nbytes);
652 brcmu_pkt_buf_free_skb(mypkt);
656 int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt)
658 u32 addr = sdiodev->sbwad;
661 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len);
663 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
667 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt);
673 int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
674 struct sk_buff_head *pktq, uint totlen)
676 struct sk_buff *glom_skb;
678 u32 addr = sdiodev->sbwad;
681 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n",
684 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
689 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
691 else if (!sdiodev->sg_support) {
692 glom_skb = brcmu_pkt_buf_get_skb(totlen);
695 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
700 skb_queue_walk(pktq, skb) {
701 memcpy(skb->data, glom_skb->data, skb->len);
702 skb_pull(glom_skb, skb->len);
705 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr,
712 int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
714 struct sk_buff *mypkt;
715 u32 addr = sdiodev->sbwad;
718 mypkt = brcmu_pkt_buf_get_skb(nbytes);
720 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
725 memcpy(mypkt->data, buf, nbytes);
727 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
730 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr,
733 brcmu_pkt_buf_free_skb(mypkt);
738 int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
739 struct sk_buff_head *pktq)
742 u32 addr = sdiodev->sbwad;
745 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen);
747 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
751 if (pktq->qlen == 1 || !sdiodev->sg_support)
752 skb_queue_walk(pktq, skb) {
753 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true,
759 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr,
766 brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
774 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
775 pkt = dev_alloc_skb(dsize);
777 brcmf_err("dev_alloc_skb failed: len %d\n", dsize);
782 /* Determine initial transfer parameters */
783 sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK;
784 if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK)
785 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr);
789 sdio_claim_host(sdiodev->func[1]);
791 /* Do the transfer(s) */
793 /* Set the backplane window to include the start address */
794 bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address);
798 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n",
799 write ? "write" : "read", dsize,
800 sdaddr, address & SBSDIO_SBWINDOW_MASK);
802 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK;
803 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
807 memcpy(pkt->data, data, dsize);
808 bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write,
811 brcmf_err("membytes transfer failed\n");
815 memcpy(data, pkt->data, dsize);
816 skb_trim(pkt, dsize);
818 /* Adjust for next transfer (if any) */
824 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
830 /* Return the window to backplane enumeration space for core access */
831 if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad))
832 brcmf_err("FAILED to set window back to 0x%x\n",
835 sdio_release_host(sdiodev->func[1]);
840 int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
842 char t_func = (char)fn;
843 brcmf_dbg(SDIO, "Enter\n");
845 /* issue abort cmd52 command through F0 */
846 brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT,
847 sizeof(t_func), &t_func, true);
849 brcmf_dbg(SDIO, "Exit\n");
853 static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev)
855 sdiodev->bus_if->state = BRCMF_BUS_DOWN;
858 brcmf_sdio_remove(sdiodev->bus);
862 /* Disable Function 2 */
863 sdio_claim_host(sdiodev->func[2]);
864 sdio_disable_func(sdiodev->func[2]);
865 sdio_release_host(sdiodev->func[2]);
867 /* Disable Function 1 */
868 sdio_claim_host(sdiodev->func[1]);
869 sdio_disable_func(sdiodev->func[1]);
870 sdio_release_host(sdiodev->func[1]);
877 static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev)
879 struct sdio_func *func;
880 struct mmc_host *host;
884 sdiodev->num_funcs = 2;
886 sdio_claim_host(sdiodev->func[1]);
888 ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
890 brcmf_err("Failed to set F1 blocksize\n");
891 sdio_release_host(sdiodev->func[1]);
894 ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
896 brcmf_err("Failed to set F2 blocksize\n");
897 sdio_release_host(sdiodev->func[1]);
901 /* increase F2 timeout */
902 sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY;
904 /* Enable Function 1 */
905 ret = sdio_enable_func(sdiodev->func[1]);
906 sdio_release_host(sdiodev->func[1]);
908 brcmf_err("Failed to enable F1: err=%d\n", ret);
913 * determine host related variables after brcmf_sdiod_probe()
914 * as func->cur_blksize is properly set and F2 init has been
915 * completed successfully.
917 func = sdiodev->func[2];
918 host = func->card->host;
919 sdiodev->sg_support = host->max_segs > 1;
920 max_blocks = min_t(uint, host->max_blk_count, 511u);
921 sdiodev->max_request_size = min_t(uint, host->max_req_size,
922 max_blocks * func->cur_blksize);
923 sdiodev->max_segment_count = min_t(uint, host->max_segs,
924 SG_MAX_SINGLE_ALLOC);
925 sdiodev->max_segment_size = host->max_seg_size;
927 /* try to attach to the target device */
928 sdiodev->bus = brcmf_sdio_probe(sdiodev);
936 brcmf_sdiod_remove(sdiodev);
941 /* devices we support, null terminated */
942 static const struct sdio_device_id brcmf_sdmmc_ids[] = {
943 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43143)},
944 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43241)},
945 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
946 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
947 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4334)},
948 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM,
949 SDIO_DEVICE_ID_BROADCOM_4335_4339)},
950 { /* end: all zeroes */ },
952 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
954 static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata;
957 static int brcmf_ops_sdio_probe(struct sdio_func *func,
958 const struct sdio_device_id *id)
961 struct brcmf_sdio_dev *sdiodev;
962 struct brcmf_bus *bus_if;
964 brcmf_dbg(SDIO, "Enter\n");
965 brcmf_dbg(SDIO, "Class=%x\n", func->class);
966 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
967 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
968 brcmf_dbg(SDIO, "Function#: %d\n", func->num);
970 /* Consume func num 1 but dont do anything with it. */
974 /* Ignore anything but func 2 */
978 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
981 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
987 /* store refs to functions used. mmc_card does
988 * not hold the F0 function pointer.
990 sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL);
991 sdiodev->func[0]->num = 0;
992 sdiodev->func[1] = func->card->sdio_func[0];
993 sdiodev->func[2] = func;
995 sdiodev->bus_if = bus_if;
996 bus_if->bus_priv.sdio = sdiodev;
997 bus_if->proto_type = BRCMF_PROTO_BCDC;
998 dev_set_drvdata(&func->dev, bus_if);
999 dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
1000 sdiodev->dev = &sdiodev->func[1]->dev;
1001 sdiodev->pdata = brcmfmac_sdio_pdata;
1003 atomic_set(&sdiodev->suspend, false);
1004 init_waitqueue_head(&sdiodev->request_word_wait);
1005 init_waitqueue_head(&sdiodev->request_buffer_wait);
1007 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n");
1008 err = brcmf_sdiod_probe(sdiodev);
1010 brcmf_err("F2 error, probe failed %d...\n", err);
1014 brcmf_dbg(SDIO, "F2 init completed...\n");
1018 dev_set_drvdata(&func->dev, NULL);
1019 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1020 kfree(sdiodev->func[0]);
1026 static void brcmf_ops_sdio_remove(struct sdio_func *func)
1028 struct brcmf_bus *bus_if;
1029 struct brcmf_sdio_dev *sdiodev;
1031 brcmf_dbg(SDIO, "Enter\n");
1032 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1033 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1034 brcmf_dbg(SDIO, "Function: %d\n", func->num);
1036 if (func->num != 1 && func->num != 2)
1039 bus_if = dev_get_drvdata(&func->dev);
1041 sdiodev = bus_if->bus_priv.sdio;
1042 brcmf_sdiod_remove(sdiodev);
1044 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1045 dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
1048 kfree(sdiodev->func[0]);
1052 brcmf_dbg(SDIO, "Exit\n");
1055 #ifdef CONFIG_PM_SLEEP
1056 static int brcmf_ops_sdio_suspend(struct device *dev)
1058 mmc_pm_flag_t sdio_flags;
1059 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1060 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1063 brcmf_dbg(SDIO, "\n");
1065 atomic_set(&sdiodev->suspend, true);
1067 sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
1068 if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
1069 brcmf_err("Host can't keep power while suspended\n");
1073 ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
1075 brcmf_err("Failed to set pm_flags\n");
1079 brcmf_sdio_wd_timer(sdiodev->bus, 0);
1084 static int brcmf_ops_sdio_resume(struct device *dev)
1086 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1087 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1089 brcmf_sdio_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
1090 atomic_set(&sdiodev->suspend, false);
1094 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
1095 .suspend = brcmf_ops_sdio_suspend,
1096 .resume = brcmf_ops_sdio_resume,
1098 #endif /* CONFIG_PM_SLEEP */
1100 static struct sdio_driver brcmf_sdmmc_driver = {
1101 .probe = brcmf_ops_sdio_probe,
1102 .remove = brcmf_ops_sdio_remove,
1103 .name = BRCMFMAC_SDIO_PDATA_NAME,
1104 .id_table = brcmf_sdmmc_ids,
1105 #ifdef CONFIG_PM_SLEEP
1107 .pm = &brcmf_sdio_pm_ops,
1109 #endif /* CONFIG_PM_SLEEP */
1112 static int brcmf_sdio_pd_probe(struct platform_device *pdev)
1114 brcmf_dbg(SDIO, "Enter\n");
1116 brcmfmac_sdio_pdata = dev_get_platdata(&pdev->dev);
1118 if (brcmfmac_sdio_pdata->power_on)
1119 brcmfmac_sdio_pdata->power_on();
1124 static int brcmf_sdio_pd_remove(struct platform_device *pdev)
1126 brcmf_dbg(SDIO, "Enter\n");
1128 if (brcmfmac_sdio_pdata->power_off)
1129 brcmfmac_sdio_pdata->power_off();
1131 sdio_unregister_driver(&brcmf_sdmmc_driver);
1136 static struct platform_driver brcmf_sdio_pd = {
1137 .remove = brcmf_sdio_pd_remove,
1139 .name = BRCMFMAC_SDIO_PDATA_NAME,
1140 .owner = THIS_MODULE,
1144 void brcmf_sdio_register(void)
1148 ret = sdio_register_driver(&brcmf_sdmmc_driver);
1150 brcmf_err("sdio_register_driver failed: %d\n", ret);
1153 void brcmf_sdio_exit(void)
1155 brcmf_dbg(SDIO, "Enter\n");
1157 if (brcmfmac_sdio_pdata)
1158 platform_driver_unregister(&brcmf_sdio_pd);
1160 sdio_unregister_driver(&brcmf_sdmmc_driver);
1163 void __init brcmf_sdio_init(void)
1167 brcmf_dbg(SDIO, "Enter\n");
1169 ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe);
1171 brcmf_dbg(SDIO, "No platform data available.\n");