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"
47 #define SDIOH_API_ACCESS_RETRY_LIMIT 2
49 #define DMA_ALIGN_MASK 0x03
51 #define SDIO_FUNC1_BLOCKSIZE 64
52 #define SDIO_FUNC2_BLOCKSIZE 512
53 /* Maximum milliseconds to wait for F2 to come up */
54 #define SDIO_WAIT_F2RDY 3000
56 #define BRCMF_DEFAULT_TXGLOM_SIZE 32 /* max tx frames in glom chain */
57 #define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */
59 static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE;
60 module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0);
61 MODULE_PARM_DESC(txglomsz, "maximum tx packet chain size [SDIO]");
63 static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id)
65 struct brcmf_bus *bus_if = dev_get_drvdata(dev_id);
66 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
68 brcmf_dbg(INTR, "OOB intr triggered\n");
70 /* out-of-band interrupt is level-triggered which won't
71 * be cleared until dpc
73 if (sdiodev->irq_en) {
74 disable_irq_nosync(irq);
75 sdiodev->irq_en = false;
78 brcmf_sdio_isr(sdiodev->bus);
83 static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func)
85 struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev);
86 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
88 brcmf_dbg(INTR, "IB intr triggered\n");
90 brcmf_sdio_isr(sdiodev->bus);
93 /* dummy handler for SDIO function 2 interrupt */
94 static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func)
98 static bool brcmf_sdiod_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
101 #ifdef CONFIG_PM_SLEEP
102 is_err = atomic_read(&sdiodev->suspend);
107 static void brcmf_sdiod_pm_resume_wait(struct brcmf_sdio_dev *sdiodev,
108 wait_queue_head_t *wq)
110 #ifdef CONFIG_PM_SLEEP
112 while (atomic_read(&sdiodev->suspend) && retry++ != 30)
113 wait_event_timeout(*wq, false, HZ/100);
117 int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev)
123 if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) {
124 brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n",
125 sdiodev->pdata->oob_irq_nr);
126 ret = request_irq(sdiodev->pdata->oob_irq_nr,
127 brcmf_sdiod_oob_irqhandler,
128 sdiodev->pdata->oob_irq_flags,
130 &sdiodev->func[1]->dev);
132 brcmf_err("request_irq failed %d\n", ret);
135 sdiodev->oob_irq_requested = true;
136 spin_lock_init(&sdiodev->irq_en_lock);
137 spin_lock_irqsave(&sdiodev->irq_en_lock, flags);
138 sdiodev->irq_en = true;
139 spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags);
141 ret = enable_irq_wake(sdiodev->pdata->oob_irq_nr);
143 brcmf_err("enable_irq_wake failed %d\n", ret);
146 sdiodev->irq_wake = true;
148 sdio_claim_host(sdiodev->func[1]);
150 /* must configure SDIO_CCCR_IENx to enable irq */
151 data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret);
152 data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1;
153 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret);
155 /* redirect, configure and enable io for interrupt signal */
156 data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE;
157 if (sdiodev->pdata->oob_irq_flags & IRQF_TRIGGER_HIGH)
158 data |= SDIO_SEPINT_ACT_HI;
159 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret);
161 sdio_release_host(sdiodev->func[1]);
163 brcmf_dbg(SDIO, "Entering\n");
164 sdio_claim_host(sdiodev->func[1]);
165 sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler);
166 sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler);
167 sdio_release_host(sdiodev->func[1]);
173 int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
175 brcmf_dbg(SDIO, "Entering\n");
177 if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) {
178 sdio_claim_host(sdiodev->func[1]);
179 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
180 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
181 sdio_release_host(sdiodev->func[1]);
183 if (sdiodev->oob_irq_requested) {
184 sdiodev->oob_irq_requested = false;
185 if (sdiodev->irq_wake) {
186 disable_irq_wake(sdiodev->pdata->oob_irq_nr);
187 sdiodev->irq_wake = false;
189 free_irq(sdiodev->pdata->oob_irq_nr,
190 &sdiodev->func[1]->dev);
191 sdiodev->irq_en = false;
194 sdio_claim_host(sdiodev->func[1]);
195 sdio_release_irq(sdiodev->func[2]);
196 sdio_release_irq(sdiodev->func[1]);
197 sdio_release_host(sdiodev->func[1]);
203 static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func,
204 uint regaddr, u8 byte)
209 * Can only directly write to some F0 registers.
210 * Handle CCCR_IENx and CCCR_ABORT command
213 if ((regaddr == SDIO_CCCR_ABORT) ||
214 (regaddr == SDIO_CCCR_IENx))
215 sdio_writeb(func, byte, regaddr, &err_ret);
217 sdio_f0_writeb(func, byte, regaddr, &err_ret);
222 static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn,
223 u32 addr, u8 regsz, void *data, bool write)
225 struct sdio_func *func;
228 brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
229 write, fn, addr, regsz);
231 brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
232 if (brcmf_sdiod_pm_resume_error(sdiodev))
235 /* only allow byte access on F0 */
236 if (WARN_ON(regsz > 1 && !fn))
238 func = sdiodev->func[fn];
244 sdio_writeb(func, *(u8 *)data, addr, &ret);
246 ret = brcmf_sdiod_f0_writeb(func, addr,
250 *(u8 *)data = sdio_readb(func, addr, &ret);
252 *(u8 *)data = sdio_f0_readb(func, addr, &ret);
257 sdio_writew(func, *(u16 *)data, addr, &ret);
259 *(u16 *)data = sdio_readw(func, addr, &ret);
263 sdio_writel(func, *(u32 *)data, addr, &ret);
265 *(u32 *)data = sdio_readl(func, addr, &ret);
268 brcmf_err("invalid size: %d\n", regsz);
273 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
274 write ? "write" : "read", fn, addr, ret);
279 static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
280 u8 regsz, void *data, bool write)
286 if (sdiodev->bus_if->state == BRCMF_BUS_NOMEDIUM)
290 * figure out how to read the register based on address range
291 * 0x00 ~ 0x7FF: function 0 CCCR and FBR
292 * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
293 * The rest: function 1 silicon backplane core registers
295 if ((addr & ~REG_F0_REG_MASK) == 0)
302 memset(data, 0, regsz);
303 /* for retry wait for 1 ms till bus get settled down */
305 usleep_range(1000, 2000);
306 ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz,
308 } while (ret != 0 && ret != -ENOMEDIUM &&
309 retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
311 if (ret == -ENOMEDIUM)
312 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_NOMEDIUM);
315 * SleepCSR register access can fail when
316 * waking up the device so reduce this noise
319 if (addr != SBSDIO_FUNC1_SLEEPCSR)
320 brcmf_err("failed to %s data F%d@0x%05x, err: %d\n",
321 write ? "write" : "read", func, addr, ret);
323 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
324 write ? "write" : "read", func, addr, ret);
330 brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
335 if (sdiodev->bus_if->state == BRCMF_BUS_NOMEDIUM)
338 addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
339 addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK;
340 addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK;
342 for (i = 0; i < 3; i++) {
343 err = brcmf_sdiod_regrw_helper(sdiodev,
344 SBSDIO_FUNC1_SBADDRLOW + i,
345 sizeof(u8), &addr[i], true);
347 brcmf_err("failed at addr: 0x%0x\n",
348 SBSDIO_FUNC1_SBADDRLOW + i);
357 brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr)
359 uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
362 if (bar0 != sdiodev->sbwad) {
363 err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0);
367 sdiodev->sbwad = bar0;
370 *addr &= SBSDIO_SB_OFT_ADDR_MASK;
373 *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
378 u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
383 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
384 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
386 brcmf_dbg(SDIO, "data:0x%02x\n", data);
394 u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
399 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
400 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
403 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
405 brcmf_dbg(SDIO, "data:0x%08x\n", data);
414 void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
419 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data);
420 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
426 void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
431 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data);
432 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
435 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
443 static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn,
444 bool write, u32 addr, struct sk_buff *pkt)
449 brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
450 if (brcmf_sdiod_pm_resume_error(sdiodev))
453 /* Single skb use the standard mmc interface */
454 req_sz = pkt->len + 3;
458 err = sdio_memcpy_toio(sdiodev->func[fn], addr,
459 ((u8 *)(pkt->data)), req_sz);
461 err = sdio_memcpy_fromio(sdiodev->func[fn], ((u8 *)(pkt->data)),
464 /* function 2 read is FIFO operation */
465 err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr,
467 if (err == -ENOMEDIUM)
468 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_NOMEDIUM);
473 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access
474 * @sdiodev: brcmfmac sdio device
475 * @fn: SDIO function number
476 * @write: direction flag
477 * @addr: dongle memory address as source/destination
480 * This function takes the respbonsibility as the interface function to MMC
481 * stack for block data access. It assumes that the skb passed down by the
482 * caller has already been padded and aligned.
484 static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn,
485 bool write, u32 addr,
486 struct sk_buff_head *pktlist)
488 unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset;
489 unsigned int max_req_sz, orig_offset, dst_offset;
490 unsigned short max_seg_cnt, seg_sz;
491 unsigned char *pkt_data, *orig_data, *dst_data;
492 struct sk_buff *pkt_next = NULL, *local_pkt_next;
493 struct sk_buff_head local_list, *target_list;
494 struct mmc_request mmc_req;
495 struct mmc_command mmc_cmd;
496 struct mmc_data mmc_dat;
497 struct scatterlist *sgl;
503 brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
504 if (brcmf_sdiod_pm_resume_error(sdiodev))
507 target_list = pktlist;
508 /* for host with broken sg support, prepare a page aligned list */
509 __skb_queue_head_init(&local_list);
510 if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) {
512 skb_queue_walk(pktlist, pkt_next)
513 req_sz += pkt_next->len;
514 req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize);
515 while (req_sz > PAGE_SIZE) {
516 pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE);
517 if (pkt_next == NULL) {
521 __skb_queue_tail(&local_list, pkt_next);
524 pkt_next = brcmu_pkt_buf_get_skb(req_sz);
525 if (pkt_next == NULL) {
529 __skb_queue_tail(&local_list, pkt_next);
530 target_list = &local_list;
533 func_blk_sz = sdiodev->func[fn]->cur_blksize;
534 max_req_sz = sdiodev->max_request_size;
535 max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count,
537 seg_sz = target_list->qlen;
539 pkt_next = target_list->next;
541 memset(&mmc_req, 0, sizeof(struct mmc_request));
542 memset(&mmc_cmd, 0, sizeof(struct mmc_command));
543 memset(&mmc_dat, 0, sizeof(struct mmc_data));
545 mmc_dat.sg = sdiodev->sgtable.sgl;
546 mmc_dat.blksz = func_blk_sz;
547 mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
548 mmc_cmd.opcode = SD_IO_RW_EXTENDED;
549 mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */
550 mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */
551 mmc_cmd.arg |= 1<<27; /* block mode */
552 /* for function 1 the addr will be incremented */
553 mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0;
554 mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
555 mmc_req.cmd = &mmc_cmd;
556 mmc_req.data = &mmc_dat;
561 sgl = sdiodev->sgtable.sgl;
563 while (pkt_next != (struct sk_buff *)target_list) {
564 pkt_data = pkt_next->data + pkt_offset;
565 sg_data_sz = pkt_next->len - pkt_offset;
566 if (sg_data_sz > sdiodev->max_segment_size)
567 sg_data_sz = sdiodev->max_segment_size;
568 if (sg_data_sz > max_req_sz - req_sz)
569 sg_data_sz = max_req_sz - req_sz;
571 sg_set_buf(sgl, pkt_data, sg_data_sz);
575 req_sz += sg_data_sz;
576 pkt_offset += sg_data_sz;
577 if (pkt_offset == pkt_next->len) {
579 pkt_next = pkt_next->next;
582 if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt)
587 if (req_sz % func_blk_sz != 0) {
588 brcmf_err("sg request length %u is not %u aligned\n",
589 req_sz, func_blk_sz);
594 mmc_dat.sg_len = sg_cnt;
595 mmc_dat.blocks = req_sz / func_blk_sz;
596 mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */
597 mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */
598 /* incrementing addr for function 1 */
602 mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card);
603 mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req);
605 ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error;
606 if (ret == -ENOMEDIUM) {
607 brcmf_bus_change_state(sdiodev->bus_if,
610 } else if (ret != 0) {
611 brcmf_err("CMD53 sg block %s failed %d\n",
612 write ? "write" : "read", ret);
618 if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) {
619 local_pkt_next = local_list.next;
621 skb_queue_walk(pktlist, pkt_next) {
624 req_sz = local_pkt_next->len - orig_offset;
625 req_sz = min_t(uint, pkt_next->len - dst_offset,
627 orig_data = local_pkt_next->data + orig_offset;
628 dst_data = pkt_next->data + dst_offset;
629 memcpy(dst_data, orig_data, req_sz);
630 orig_offset += req_sz;
631 dst_offset += req_sz;
632 if (orig_offset == local_pkt_next->len) {
634 local_pkt_next = local_pkt_next->next;
636 if (dst_offset == pkt_next->len)
638 } while (!skb_queue_empty(&local_list));
643 sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents);
644 while ((pkt_next = __skb_dequeue(&local_list)) != NULL)
645 brcmu_pkt_buf_free_skb(pkt_next);
650 int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
652 struct sk_buff *mypkt;
655 mypkt = brcmu_pkt_buf_get_skb(nbytes);
657 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
662 err = brcmf_sdiod_recv_pkt(sdiodev, mypkt);
664 memcpy(buf, mypkt->data, nbytes);
666 brcmu_pkt_buf_free_skb(mypkt);
670 int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt)
672 u32 addr = sdiodev->sbwad;
675 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len);
677 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
681 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt);
687 int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
688 struct sk_buff_head *pktq, uint totlen)
690 struct sk_buff *glom_skb;
692 u32 addr = sdiodev->sbwad;
695 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n",
698 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
703 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
705 else if (!sdiodev->sg_support) {
706 glom_skb = brcmu_pkt_buf_get_skb(totlen);
709 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
714 skb_queue_walk(pktq, skb) {
715 memcpy(skb->data, glom_skb->data, skb->len);
716 skb_pull(glom_skb, skb->len);
719 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr,
726 int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
728 struct sk_buff *mypkt;
729 u32 addr = sdiodev->sbwad;
732 mypkt = brcmu_pkt_buf_get_skb(nbytes);
734 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
739 memcpy(mypkt->data, buf, nbytes);
741 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
744 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr,
747 brcmu_pkt_buf_free_skb(mypkt);
752 int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
753 struct sk_buff_head *pktq)
756 u32 addr = sdiodev->sbwad;
759 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen);
761 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
765 if (pktq->qlen == 1 || !sdiodev->sg_support)
766 skb_queue_walk(pktq, skb) {
767 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true,
773 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr,
780 brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
788 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
789 pkt = dev_alloc_skb(dsize);
791 brcmf_err("dev_alloc_skb failed: len %d\n", dsize);
796 /* Determine initial transfer parameters */
797 sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK;
798 if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK)
799 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr);
803 sdio_claim_host(sdiodev->func[1]);
805 /* Do the transfer(s) */
807 /* Set the backplane window to include the start address */
808 bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address);
812 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n",
813 write ? "write" : "read", dsize,
814 sdaddr, address & SBSDIO_SBWINDOW_MASK);
816 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK;
817 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
821 memcpy(pkt->data, data, dsize);
822 bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write,
825 brcmf_err("membytes transfer failed\n");
829 memcpy(data, pkt->data, dsize);
832 /* Adjust for next transfer (if any) */
838 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
844 /* Return the window to backplane enumeration space for core access */
845 if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad))
846 brcmf_err("FAILED to set window back to 0x%x\n",
849 sdio_release_host(sdiodev->func[1]);
854 int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
856 char t_func = (char)fn;
857 brcmf_dbg(SDIO, "Enter\n");
859 /* issue abort cmd52 command through F0 */
860 brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT,
861 sizeof(t_func), &t_func, true);
863 brcmf_dbg(SDIO, "Exit\n");
867 static void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev)
872 if (!sdiodev->sg_support)
875 nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE, brcmf_sdiod_txglomsz);
876 nents += (nents >> 4) + 1;
878 WARN_ON(nents > sdiodev->max_segment_count);
880 brcmf_dbg(TRACE, "nents=%d\n", nents);
881 err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL);
883 brcmf_err("allocation failed: disable scatter-gather");
884 sdiodev->sg_support = false;
887 sdiodev->txglomsz = brcmf_sdiod_txglomsz;
890 static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev)
893 brcmf_sdio_remove(sdiodev->bus);
897 /* Disable Function 2 */
898 sdio_claim_host(sdiodev->func[2]);
899 sdio_disable_func(sdiodev->func[2]);
900 sdio_release_host(sdiodev->func[2]);
902 /* Disable Function 1 */
903 sdio_claim_host(sdiodev->func[1]);
904 sdio_disable_func(sdiodev->func[1]);
905 sdio_release_host(sdiodev->func[1]);
907 sg_free_table(&sdiodev->sgtable);
913 static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev)
915 struct sdio_func *func;
916 struct mmc_host *host;
920 sdiodev->num_funcs = 2;
922 sdio_claim_host(sdiodev->func[1]);
924 ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
926 brcmf_err("Failed to set F1 blocksize\n");
927 sdio_release_host(sdiodev->func[1]);
930 ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
932 brcmf_err("Failed to set F2 blocksize\n");
933 sdio_release_host(sdiodev->func[1]);
937 /* increase F2 timeout */
938 sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY;
940 /* Enable Function 1 */
941 ret = sdio_enable_func(sdiodev->func[1]);
942 sdio_release_host(sdiodev->func[1]);
944 brcmf_err("Failed to enable F1: err=%d\n", ret);
949 * determine host related variables after brcmf_sdiod_probe()
950 * as func->cur_blksize is properly set and F2 init has been
951 * completed successfully.
953 func = sdiodev->func[2];
954 host = func->card->host;
955 sdiodev->sg_support = host->max_segs > 1;
956 max_blocks = min_t(uint, host->max_blk_count, 511u);
957 sdiodev->max_request_size = min_t(uint, host->max_req_size,
958 max_blocks * func->cur_blksize);
959 sdiodev->max_segment_count = min_t(uint, host->max_segs,
960 SG_MAX_SINGLE_ALLOC);
961 sdiodev->max_segment_size = host->max_seg_size;
963 /* allocate scatter-gather table. sg support
964 * will be disabled upon allocation failure.
966 brcmf_sdiod_sgtable_alloc(sdiodev);
968 /* try to attach to the target device */
969 sdiodev->bus = brcmf_sdio_probe(sdiodev);
977 brcmf_sdiod_remove(sdiodev);
982 /* devices we support, null terminated */
983 static const struct sdio_device_id brcmf_sdmmc_ids[] = {
984 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43143)},
985 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43241)},
986 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
987 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
988 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4334)},
989 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43362)},
990 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM,
991 SDIO_DEVICE_ID_BROADCOM_4335_4339)},
992 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4354)},
993 { /* end: all zeroes */ },
995 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
997 static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata;
1000 static int brcmf_ops_sdio_probe(struct sdio_func *func,
1001 const struct sdio_device_id *id)
1004 struct brcmf_sdio_dev *sdiodev;
1005 struct brcmf_bus *bus_if;
1007 brcmf_dbg(SDIO, "Enter\n");
1008 brcmf_dbg(SDIO, "Class=%x\n", func->class);
1009 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1010 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1011 brcmf_dbg(SDIO, "Function#: %d\n", func->num);
1013 /* Consume func num 1 but dont do anything with it. */
1017 /* Ignore anything but func 2 */
1021 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
1024 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
1030 /* store refs to functions used. mmc_card does
1031 * not hold the F0 function pointer.
1033 sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL);
1034 sdiodev->func[0]->num = 0;
1035 sdiodev->func[1] = func->card->sdio_func[0];
1036 sdiodev->func[2] = func;
1038 sdiodev->bus_if = bus_if;
1039 bus_if->bus_priv.sdio = sdiodev;
1040 bus_if->proto_type = BRCMF_PROTO_BCDC;
1041 dev_set_drvdata(&func->dev, bus_if);
1042 dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
1043 sdiodev->dev = &sdiodev->func[1]->dev;
1044 sdiodev->pdata = brcmfmac_sdio_pdata;
1046 atomic_set(&sdiodev->suspend, false);
1047 init_waitqueue_head(&sdiodev->request_word_wait);
1048 init_waitqueue_head(&sdiodev->request_buffer_wait);
1050 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n");
1051 err = brcmf_sdiod_probe(sdiodev);
1053 brcmf_err("F2 error, probe failed %d...\n", err);
1057 brcmf_dbg(SDIO, "F2 init completed...\n");
1061 dev_set_drvdata(&func->dev, NULL);
1062 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1063 kfree(sdiodev->func[0]);
1069 static void brcmf_ops_sdio_remove(struct sdio_func *func)
1071 struct brcmf_bus *bus_if;
1072 struct brcmf_sdio_dev *sdiodev;
1074 brcmf_dbg(SDIO, "Enter\n");
1075 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1076 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1077 brcmf_dbg(SDIO, "Function: %d\n", func->num);
1079 if (func->num != 1 && func->num != 2)
1082 bus_if = dev_get_drvdata(&func->dev);
1084 sdiodev = bus_if->bus_priv.sdio;
1085 brcmf_sdiod_remove(sdiodev);
1087 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1088 dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
1091 kfree(sdiodev->func[0]);
1095 brcmf_dbg(SDIO, "Exit\n");
1098 #ifdef CONFIG_PM_SLEEP
1099 static int brcmf_ops_sdio_suspend(struct device *dev)
1101 mmc_pm_flag_t sdio_flags;
1102 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1103 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1106 brcmf_dbg(SDIO, "Enter\n");
1108 sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
1109 if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
1110 brcmf_err("Host can't keep power while suspended\n");
1114 atomic_set(&sdiodev->suspend, true);
1116 ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
1118 brcmf_err("Failed to set pm_flags\n");
1119 atomic_set(&sdiodev->suspend, false);
1123 brcmf_sdio_wd_timer(sdiodev->bus, 0);
1128 static int brcmf_ops_sdio_resume(struct device *dev)
1130 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1131 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1133 brcmf_dbg(SDIO, "Enter\n");
1134 brcmf_sdio_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
1135 atomic_set(&sdiodev->suspend, false);
1139 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
1140 .suspend = brcmf_ops_sdio_suspend,
1141 .resume = brcmf_ops_sdio_resume,
1143 #endif /* CONFIG_PM_SLEEP */
1145 static struct sdio_driver brcmf_sdmmc_driver = {
1146 .probe = brcmf_ops_sdio_probe,
1147 .remove = brcmf_ops_sdio_remove,
1148 .name = BRCMFMAC_SDIO_PDATA_NAME,
1149 .id_table = brcmf_sdmmc_ids,
1151 .owner = THIS_MODULE,
1152 #ifdef CONFIG_PM_SLEEP
1153 .pm = &brcmf_sdio_pm_ops,
1154 #endif /* CONFIG_PM_SLEEP */
1158 static int __init brcmf_sdio_pd_probe(struct platform_device *pdev)
1160 brcmf_dbg(SDIO, "Enter\n");
1162 brcmfmac_sdio_pdata = dev_get_platdata(&pdev->dev);
1164 if (brcmfmac_sdio_pdata->power_on)
1165 brcmfmac_sdio_pdata->power_on();
1170 static int brcmf_sdio_pd_remove(struct platform_device *pdev)
1172 brcmf_dbg(SDIO, "Enter\n");
1174 if (brcmfmac_sdio_pdata->power_off)
1175 brcmfmac_sdio_pdata->power_off();
1177 sdio_unregister_driver(&brcmf_sdmmc_driver);
1182 static struct platform_driver brcmf_sdio_pd = {
1183 .remove = brcmf_sdio_pd_remove,
1185 .name = BRCMFMAC_SDIO_PDATA_NAME,
1186 .owner = THIS_MODULE,
1190 void brcmf_sdio_register(void)
1194 ret = sdio_register_driver(&brcmf_sdmmc_driver);
1196 brcmf_err("sdio_register_driver failed: %d\n", ret);
1199 void brcmf_sdio_exit(void)
1201 brcmf_dbg(SDIO, "Enter\n");
1203 if (brcmfmac_sdio_pdata)
1204 platform_driver_unregister(&brcmf_sdio_pd);
1206 sdio_unregister_driver(&brcmf_sdmmc_driver);
1209 void __init brcmf_sdio_init(void)
1213 brcmf_dbg(SDIO, "Enter\n");
1215 ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe);
1217 brcmf_dbg(SDIO, "No platform data available.\n");