2 * Copyright (c) 2010 Broadcom Corporation
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 /* ****************** SDIO CARD Interface Functions **************************/
18 #include <linux/types.h>
19 #include <linux/netdevice.h>
20 #include <linux/pci.h>
21 #include <linux/pci_ids.h>
22 #include <linux/sched.h>
23 #include <linux/completion.h>
24 #include <linux/scatterlist.h>
25 #include <linux/mmc/sdio.h>
26 #include <linux/mmc/core.h>
27 #include <linux/mmc/sdio_func.h>
28 #include <linux/mmc/card.h>
29 #include <linux/mmc/host.h>
30 #include <linux/platform_device.h>
31 #include <linux/platform_data/brcmfmac-sdio.h>
32 #include <linux/suspend.h>
33 #include <linux/errno.h>
34 #include <linux/module.h>
35 #include <net/cfg80211.h>
38 #include <brcm_hw_ids.h>
39 #include <brcmu_utils.h>
40 #include <brcmu_wifi.h>
41 #include <chipcommon.h>
49 #define SDIOH_API_ACCESS_RETRY_LIMIT 2
51 #define DMA_ALIGN_MASK 0x03
53 #define SDIO_FUNC1_BLOCKSIZE 64
54 #define SDIO_FUNC2_BLOCKSIZE 512
55 /* Maximum milliseconds to wait for F2 to come up */
56 #define SDIO_WAIT_F2RDY 3000
58 #define BRCMF_DEFAULT_TXGLOM_SIZE 32 /* max tx frames in glom chain */
59 #define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */
61 static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE;
62 module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0);
63 MODULE_PARM_DESC(txglomsz, "maximum tx packet chain size [SDIO]");
65 static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id)
67 struct brcmf_bus *bus_if = dev_get_drvdata(dev_id);
68 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
70 brcmf_dbg(INTR, "OOB intr triggered\n");
72 /* out-of-band interrupt is level-triggered which won't
73 * be cleared until dpc
75 if (sdiodev->irq_en) {
76 disable_irq_nosync(irq);
77 sdiodev->irq_en = false;
80 brcmf_sdio_isr(sdiodev->bus);
85 static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func)
87 struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev);
88 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
90 brcmf_dbg(INTR, "IB intr triggered\n");
92 brcmf_sdio_isr(sdiodev->bus);
95 /* dummy handler for SDIO function 2 interrupt */
96 static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func)
100 int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev)
104 u32 addr, gpiocontrol;
107 if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) {
108 brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n",
109 sdiodev->pdata->oob_irq_nr);
110 ret = request_irq(sdiodev->pdata->oob_irq_nr,
111 brcmf_sdiod_oob_irqhandler,
112 sdiodev->pdata->oob_irq_flags,
114 &sdiodev->func[1]->dev);
116 brcmf_err("request_irq failed %d\n", ret);
119 sdiodev->oob_irq_requested = true;
120 spin_lock_init(&sdiodev->irq_en_lock);
121 spin_lock_irqsave(&sdiodev->irq_en_lock, flags);
122 sdiodev->irq_en = true;
123 spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags);
125 ret = enable_irq_wake(sdiodev->pdata->oob_irq_nr);
127 brcmf_err("enable_irq_wake failed %d\n", ret);
130 sdiodev->irq_wake = true;
132 sdio_claim_host(sdiodev->func[1]);
134 if (sdiodev->bus_if->chip == BRCM_CC_43362_CHIP_ID) {
135 /* assign GPIO to SDIO core */
136 addr = CORE_CC_REG(SI_ENUM_BASE, gpiocontrol);
137 gpiocontrol = brcmf_sdiod_regrl(sdiodev, addr, &ret);
139 brcmf_sdiod_regwl(sdiodev, addr, gpiocontrol, &ret);
141 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_SELECT, 0xf,
143 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_OUT, 0, &ret);
144 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_EN, 0x2, &ret);
147 /* must configure SDIO_CCCR_IENx to enable irq */
148 data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret);
149 data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1;
150 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret);
152 /* redirect, configure and enable io for interrupt signal */
153 data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE;
154 if (sdiodev->pdata->oob_irq_flags & IRQF_TRIGGER_HIGH)
155 data |= SDIO_SEPINT_ACT_HI;
156 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret);
158 sdio_release_host(sdiodev->func[1]);
160 brcmf_dbg(SDIO, "Entering\n");
161 sdio_claim_host(sdiodev->func[1]);
162 sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler);
163 sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler);
164 sdio_release_host(sdiodev->func[1]);
170 int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
172 brcmf_dbg(SDIO, "Entering\n");
174 if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) {
175 sdio_claim_host(sdiodev->func[1]);
176 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
177 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
178 sdio_release_host(sdiodev->func[1]);
180 if (sdiodev->oob_irq_requested) {
181 sdiodev->oob_irq_requested = false;
182 if (sdiodev->irq_wake) {
183 disable_irq_wake(sdiodev->pdata->oob_irq_nr);
184 sdiodev->irq_wake = false;
186 free_irq(sdiodev->pdata->oob_irq_nr,
187 &sdiodev->func[1]->dev);
188 sdiodev->irq_en = false;
191 sdio_claim_host(sdiodev->func[1]);
192 sdio_release_irq(sdiodev->func[2]);
193 sdio_release_irq(sdiodev->func[1]);
194 sdio_release_host(sdiodev->func[1]);
200 static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func,
201 uint regaddr, u8 byte)
206 * Can only directly write to some F0 registers.
207 * Handle CCCR_IENx and CCCR_ABORT command
210 if ((regaddr == SDIO_CCCR_ABORT) ||
211 (regaddr == SDIO_CCCR_IENx))
212 sdio_writeb(func, byte, regaddr, &err_ret);
214 sdio_f0_writeb(func, byte, regaddr, &err_ret);
219 static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn,
220 u32 addr, u8 regsz, void *data, bool write)
222 struct sdio_func *func;
225 brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
226 write, fn, addr, regsz);
228 /* only allow byte access on F0 */
229 if (WARN_ON(regsz > 1 && !fn))
231 func = sdiodev->func[fn];
237 sdio_writeb(func, *(u8 *)data, addr, &ret);
239 ret = brcmf_sdiod_f0_writeb(func, addr,
243 *(u8 *)data = sdio_readb(func, addr, &ret);
245 *(u8 *)data = sdio_f0_readb(func, addr, &ret);
250 sdio_writew(func, *(u16 *)data, addr, &ret);
252 *(u16 *)data = sdio_readw(func, addr, &ret);
256 sdio_writel(func, *(u32 *)data, addr, &ret);
258 *(u32 *)data = sdio_readl(func, addr, &ret);
261 brcmf_err("invalid size: %d\n", regsz);
266 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
267 write ? "write" : "read", fn, addr, ret);
272 static void brcmf_sdiod_nomedium_state(struct brcmf_sdio_dev *sdiodev)
274 sdiodev->state = BRCMF_STATE_NOMEDIUM;
275 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN);
278 static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
279 u8 regsz, void *data, bool write)
285 if (sdiodev->state == BRCMF_STATE_NOMEDIUM)
289 * figure out how to read the register based on address range
290 * 0x00 ~ 0x7FF: function 0 CCCR and FBR
291 * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
292 * The rest: function 1 silicon backplane core registers
294 if ((addr & ~REG_F0_REG_MASK) == 0)
301 memset(data, 0, regsz);
302 /* for retry wait for 1 ms till bus get settled down */
304 usleep_range(1000, 2000);
305 ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz,
307 } while (ret != 0 && ret != -ENOMEDIUM &&
308 retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
310 if (ret == -ENOMEDIUM)
311 brcmf_sdiod_nomedium_state(sdiodev);
314 * SleepCSR register access can fail when
315 * waking up the device so reduce this noise
318 if (addr != SBSDIO_FUNC1_SLEEPCSR)
319 brcmf_err("failed to %s data F%d@0x%05x, err: %d\n",
320 write ? "write" : "read", func, addr, ret);
322 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
323 write ? "write" : "read", func, addr, ret);
329 brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
334 if (sdiodev->state == BRCMF_STATE_NOMEDIUM)
337 addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
338 addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK;
339 addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK;
341 for (i = 0; i < 3; i++) {
342 err = brcmf_sdiod_regrw_helper(sdiodev,
343 SBSDIO_FUNC1_SBADDRLOW + i,
344 sizeof(u8), &addr[i], true);
346 brcmf_err("failed at addr: 0x%0x\n",
347 SBSDIO_FUNC1_SBADDRLOW + i);
356 brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr)
358 uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
361 if (bar0 != sdiodev->sbwad) {
362 err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0);
366 sdiodev->sbwad = bar0;
369 *addr &= SBSDIO_SB_OFT_ADDR_MASK;
372 *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
377 u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
382 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
383 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
385 brcmf_dbg(SDIO, "data:0x%02x\n", data);
393 u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
398 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
399 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
402 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
404 brcmf_dbg(SDIO, "data:0x%08x\n", data);
413 void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
418 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data);
419 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
425 void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
430 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data);
431 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
434 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
442 static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn,
443 bool write, u32 addr, struct sk_buff *pkt)
448 /* Single skb use the standard mmc interface */
449 req_sz = pkt->len + 3;
453 err = sdio_memcpy_toio(sdiodev->func[fn], addr,
454 ((u8 *)(pkt->data)), req_sz);
456 err = sdio_memcpy_fromio(sdiodev->func[fn], ((u8 *)(pkt->data)),
459 /* function 2 read is FIFO operation */
460 err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr,
462 if (err == -ENOMEDIUM)
463 brcmf_sdiod_nomedium_state(sdiodev);
468 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access
469 * @sdiodev: brcmfmac sdio device
470 * @fn: SDIO function number
471 * @write: direction flag
472 * @addr: dongle memory address as source/destination
475 * This function takes the respbonsibility as the interface function to MMC
476 * stack for block data access. It assumes that the skb passed down by the
477 * caller has already been padded and aligned.
479 static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn,
480 bool write, u32 addr,
481 struct sk_buff_head *pktlist)
483 unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset;
484 unsigned int max_req_sz, orig_offset, dst_offset;
485 unsigned short max_seg_cnt, seg_sz;
486 unsigned char *pkt_data, *orig_data, *dst_data;
487 struct sk_buff *pkt_next = NULL, *local_pkt_next;
488 struct sk_buff_head local_list, *target_list;
489 struct mmc_request mmc_req;
490 struct mmc_command mmc_cmd;
491 struct mmc_data mmc_dat;
492 struct scatterlist *sgl;
498 target_list = pktlist;
499 /* for host with broken sg support, prepare a page aligned list */
500 __skb_queue_head_init(&local_list);
501 if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) {
503 skb_queue_walk(pktlist, pkt_next)
504 req_sz += pkt_next->len;
505 req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize);
506 while (req_sz > PAGE_SIZE) {
507 pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE);
508 if (pkt_next == NULL) {
512 __skb_queue_tail(&local_list, pkt_next);
515 pkt_next = brcmu_pkt_buf_get_skb(req_sz);
516 if (pkt_next == NULL) {
520 __skb_queue_tail(&local_list, pkt_next);
521 target_list = &local_list;
524 func_blk_sz = sdiodev->func[fn]->cur_blksize;
525 max_req_sz = sdiodev->max_request_size;
526 max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count,
528 seg_sz = target_list->qlen;
530 pkt_next = target_list->next;
532 memset(&mmc_req, 0, sizeof(struct mmc_request));
533 memset(&mmc_cmd, 0, sizeof(struct mmc_command));
534 memset(&mmc_dat, 0, sizeof(struct mmc_data));
536 mmc_dat.sg = sdiodev->sgtable.sgl;
537 mmc_dat.blksz = func_blk_sz;
538 mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
539 mmc_cmd.opcode = SD_IO_RW_EXTENDED;
540 mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */
541 mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */
542 mmc_cmd.arg |= 1<<27; /* block mode */
543 /* for function 1 the addr will be incremented */
544 mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0;
545 mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
546 mmc_req.cmd = &mmc_cmd;
547 mmc_req.data = &mmc_dat;
552 sgl = sdiodev->sgtable.sgl;
554 while (pkt_next != (struct sk_buff *)target_list) {
555 pkt_data = pkt_next->data + pkt_offset;
556 sg_data_sz = pkt_next->len - pkt_offset;
557 if (sg_data_sz > sdiodev->max_segment_size)
558 sg_data_sz = sdiodev->max_segment_size;
559 if (sg_data_sz > max_req_sz - req_sz)
560 sg_data_sz = max_req_sz - req_sz;
562 sg_set_buf(sgl, pkt_data, sg_data_sz);
566 req_sz += sg_data_sz;
567 pkt_offset += sg_data_sz;
568 if (pkt_offset == pkt_next->len) {
570 pkt_next = pkt_next->next;
573 if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt)
578 if (req_sz % func_blk_sz != 0) {
579 brcmf_err("sg request length %u is not %u aligned\n",
580 req_sz, func_blk_sz);
585 mmc_dat.sg_len = sg_cnt;
586 mmc_dat.blocks = req_sz / func_blk_sz;
587 mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */
588 mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */
589 /* incrementing addr for function 1 */
593 mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card);
594 mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req);
596 ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error;
597 if (ret == -ENOMEDIUM) {
598 brcmf_sdiod_nomedium_state(sdiodev);
600 } else if (ret != 0) {
601 brcmf_err("CMD53 sg block %s failed %d\n",
602 write ? "write" : "read", ret);
608 if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) {
609 local_pkt_next = local_list.next;
611 skb_queue_walk(pktlist, pkt_next) {
614 req_sz = local_pkt_next->len - orig_offset;
615 req_sz = min_t(uint, pkt_next->len - dst_offset,
617 orig_data = local_pkt_next->data + orig_offset;
618 dst_data = pkt_next->data + dst_offset;
619 memcpy(dst_data, orig_data, req_sz);
620 orig_offset += req_sz;
621 dst_offset += req_sz;
622 if (orig_offset == local_pkt_next->len) {
624 local_pkt_next = local_pkt_next->next;
626 if (dst_offset == pkt_next->len)
628 } while (!skb_queue_empty(&local_list));
633 sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents);
634 while ((pkt_next = __skb_dequeue(&local_list)) != NULL)
635 brcmu_pkt_buf_free_skb(pkt_next);
640 int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
642 struct sk_buff *mypkt;
645 mypkt = brcmu_pkt_buf_get_skb(nbytes);
647 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
652 err = brcmf_sdiod_recv_pkt(sdiodev, mypkt);
654 memcpy(buf, mypkt->data, nbytes);
656 brcmu_pkt_buf_free_skb(mypkt);
660 int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt)
662 u32 addr = sdiodev->sbwad;
665 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len);
667 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
671 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt);
677 int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
678 struct sk_buff_head *pktq, uint totlen)
680 struct sk_buff *glom_skb;
682 u32 addr = sdiodev->sbwad;
685 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n",
688 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
693 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
695 else if (!sdiodev->sg_support) {
696 glom_skb = brcmu_pkt_buf_get_skb(totlen);
699 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
704 skb_queue_walk(pktq, skb) {
705 memcpy(skb->data, glom_skb->data, skb->len);
706 skb_pull(glom_skb, skb->len);
709 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr,
716 int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
718 struct sk_buff *mypkt;
719 u32 addr = sdiodev->sbwad;
722 mypkt = brcmu_pkt_buf_get_skb(nbytes);
724 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
729 memcpy(mypkt->data, buf, nbytes);
731 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
734 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr,
737 brcmu_pkt_buf_free_skb(mypkt);
742 int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
743 struct sk_buff_head *pktq)
746 u32 addr = sdiodev->sbwad;
749 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen);
751 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
755 if (pktq->qlen == 1 || !sdiodev->sg_support)
756 skb_queue_walk(pktq, skb) {
757 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true,
763 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr,
770 brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
778 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
779 pkt = dev_alloc_skb(dsize);
781 brcmf_err("dev_alloc_skb failed: len %d\n", dsize);
786 /* Determine initial transfer parameters */
787 sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK;
788 if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK)
789 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr);
793 sdio_claim_host(sdiodev->func[1]);
795 /* Do the transfer(s) */
797 /* Set the backplane window to include the start address */
798 bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address);
802 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n",
803 write ? "write" : "read", dsize,
804 sdaddr, address & SBSDIO_SBWINDOW_MASK);
806 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK;
807 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
811 memcpy(pkt->data, data, dsize);
812 bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write,
815 brcmf_err("membytes transfer failed\n");
819 memcpy(data, pkt->data, dsize);
822 /* Adjust for next transfer (if any) */
828 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
834 /* Return the window to backplane enumeration space for core access */
835 if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad))
836 brcmf_err("FAILED to set window back to 0x%x\n",
839 sdio_release_host(sdiodev->func[1]);
844 int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
846 char t_func = (char)fn;
847 brcmf_dbg(SDIO, "Enter\n");
849 /* issue abort cmd52 command through F0 */
850 brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT,
851 sizeof(t_func), &t_func, true);
853 brcmf_dbg(SDIO, "Exit\n");
857 static void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev)
862 if (!sdiodev->sg_support)
865 nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE, brcmf_sdiod_txglomsz);
866 nents += (nents >> 4) + 1;
868 WARN_ON(nents > sdiodev->max_segment_count);
870 brcmf_dbg(TRACE, "nents=%d\n", nents);
871 err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL);
873 brcmf_err("allocation failed: disable scatter-gather");
874 sdiodev->sg_support = false;
877 sdiodev->txglomsz = brcmf_sdiod_txglomsz;
880 static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev)
883 brcmf_sdio_remove(sdiodev->bus);
887 /* Disable Function 2 */
888 sdio_claim_host(sdiodev->func[2]);
889 sdio_disable_func(sdiodev->func[2]);
890 sdio_release_host(sdiodev->func[2]);
892 /* Disable Function 1 */
893 sdio_claim_host(sdiodev->func[1]);
894 sdio_disable_func(sdiodev->func[1]);
895 sdio_release_host(sdiodev->func[1]);
897 sg_free_table(&sdiodev->sgtable);
903 static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev)
905 struct sdio_func *func;
906 struct mmc_host *host;
910 sdiodev->num_funcs = 2;
912 sdio_claim_host(sdiodev->func[1]);
914 ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
916 brcmf_err("Failed to set F1 blocksize\n");
917 sdio_release_host(sdiodev->func[1]);
920 ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
922 brcmf_err("Failed to set F2 blocksize\n");
923 sdio_release_host(sdiodev->func[1]);
927 /* increase F2 timeout */
928 sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY;
930 /* Enable Function 1 */
931 ret = sdio_enable_func(sdiodev->func[1]);
932 sdio_release_host(sdiodev->func[1]);
934 brcmf_err("Failed to enable F1: err=%d\n", ret);
939 * determine host related variables after brcmf_sdiod_probe()
940 * as func->cur_blksize is properly set and F2 init has been
941 * completed successfully.
943 func = sdiodev->func[2];
944 host = func->card->host;
945 sdiodev->sg_support = host->max_segs > 1;
946 max_blocks = min_t(uint, host->max_blk_count, 511u);
947 sdiodev->max_request_size = min_t(uint, host->max_req_size,
948 max_blocks * func->cur_blksize);
949 sdiodev->max_segment_count = min_t(uint, host->max_segs,
950 SG_MAX_SINGLE_ALLOC);
951 sdiodev->max_segment_size = host->max_seg_size;
953 /* allocate scatter-gather table. sg support
954 * will be disabled upon allocation failure.
956 brcmf_sdiod_sgtable_alloc(sdiodev);
958 /* try to attach to the target device */
959 sdiodev->bus = brcmf_sdio_probe(sdiodev);
967 brcmf_sdiod_remove(sdiodev);
972 #define BRCMF_SDIO_DEVICE(dev_id) \
973 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)}
975 /* devices we support, null terminated */
976 static const struct sdio_device_id brcmf_sdmmc_ids[] = {
977 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143),
978 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241),
979 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329),
980 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330),
981 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334),
982 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340),
983 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341),
984 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362),
985 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339),
986 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354),
987 { /* end: all zeroes */ }
989 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
991 static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata;
994 static int brcmf_ops_sdio_probe(struct sdio_func *func,
995 const struct sdio_device_id *id)
998 struct brcmf_sdio_dev *sdiodev;
999 struct brcmf_bus *bus_if;
1001 brcmf_dbg(SDIO, "Enter\n");
1002 brcmf_dbg(SDIO, "Class=%x\n", func->class);
1003 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1004 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1005 brcmf_dbg(SDIO, "Function#: %d\n", func->num);
1007 /* Consume func num 1 but dont do anything with it. */
1011 /* Ignore anything but func 2 */
1015 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
1018 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
1024 /* store refs to functions used. mmc_card does
1025 * not hold the F0 function pointer.
1027 sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL);
1028 sdiodev->func[0]->num = 0;
1029 sdiodev->func[1] = func->card->sdio_func[0];
1030 sdiodev->func[2] = func;
1032 sdiodev->bus_if = bus_if;
1033 bus_if->bus_priv.sdio = sdiodev;
1034 bus_if->proto_type = BRCMF_PROTO_BCDC;
1035 dev_set_drvdata(&func->dev, bus_if);
1036 dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
1037 sdiodev->dev = &sdiodev->func[1]->dev;
1038 sdiodev->pdata = brcmfmac_sdio_pdata;
1040 if (!sdiodev->pdata)
1041 brcmf_of_probe(sdiodev);
1043 #ifdef CONFIG_PM_SLEEP
1044 /* wowl can be supported when KEEP_POWER is true and (WAKE_SDIO_IRQ
1045 * is true or when platform data OOB irq is true).
1047 if ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_KEEP_POWER) &&
1048 ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_WAKE_SDIO_IRQ) ||
1049 (sdiodev->pdata && sdiodev->pdata->oob_irq_supported)))
1050 bus_if->wowl_supported = true;
1053 sdiodev->sleeping = false;
1054 atomic_set(&sdiodev->suspend, false);
1055 init_waitqueue_head(&sdiodev->idle_wait);
1057 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n");
1058 err = brcmf_sdiod_probe(sdiodev);
1060 brcmf_err("F2 error, probe failed %d...\n", err);
1064 brcmf_dbg(SDIO, "F2 init completed...\n");
1068 dev_set_drvdata(&func->dev, NULL);
1069 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1070 kfree(sdiodev->func[0]);
1076 static void brcmf_ops_sdio_remove(struct sdio_func *func)
1078 struct brcmf_bus *bus_if;
1079 struct brcmf_sdio_dev *sdiodev;
1081 brcmf_dbg(SDIO, "Enter\n");
1082 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1083 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1084 brcmf_dbg(SDIO, "Function: %d\n", func->num);
1086 if (func->num != 1 && func->num != 2)
1089 bus_if = dev_get_drvdata(&func->dev);
1091 sdiodev = bus_if->bus_priv.sdio;
1092 brcmf_sdiod_remove(sdiodev);
1094 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1095 dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
1098 kfree(sdiodev->func[0]);
1102 brcmf_dbg(SDIO, "Exit\n");
1105 void brcmf_sdio_wowl_config(struct device *dev, bool enabled)
1107 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1108 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1110 brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled);
1111 sdiodev->wowl_enabled = enabled;
1114 #ifdef CONFIG_PM_SLEEP
1115 static int brcmf_ops_sdio_suspend(struct device *dev)
1117 struct brcmf_bus *bus_if;
1118 struct brcmf_sdio_dev *sdiodev;
1119 mmc_pm_flag_t sdio_flags;
1121 brcmf_dbg(SDIO, "Enter\n");
1123 bus_if = dev_get_drvdata(dev);
1124 sdiodev = bus_if->bus_priv.sdio;
1126 /* wait for watchdog to go idle */
1127 if (wait_event_timeout(sdiodev->idle_wait, sdiodev->sleeping,
1128 msecs_to_jiffies(3 * BRCMF_WD_POLL_MS)) == 0) {
1129 brcmf_err("bus still active\n");
1132 /* disable watchdog */
1133 brcmf_sdio_wd_timer(sdiodev->bus, 0);
1134 atomic_set(&sdiodev->suspend, true);
1136 if (sdiodev->wowl_enabled) {
1137 sdio_flags = MMC_PM_KEEP_POWER;
1138 if (sdiodev->pdata->oob_irq_supported)
1139 enable_irq_wake(sdiodev->pdata->oob_irq_nr);
1141 sdio_flags = MMC_PM_WAKE_SDIO_IRQ;
1142 if (sdio_set_host_pm_flags(sdiodev->func[1], sdio_flags))
1143 brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
1148 static int brcmf_ops_sdio_resume(struct device *dev)
1150 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1151 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1153 brcmf_dbg(SDIO, "Enter\n");
1154 if (sdiodev->pdata && sdiodev->pdata->oob_irq_supported)
1155 disable_irq_wake(sdiodev->pdata->oob_irq_nr);
1156 brcmf_sdio_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
1157 atomic_set(&sdiodev->suspend, false);
1161 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
1162 .suspend = brcmf_ops_sdio_suspend,
1163 .resume = brcmf_ops_sdio_resume,
1165 #endif /* CONFIG_PM_SLEEP */
1167 static struct sdio_driver brcmf_sdmmc_driver = {
1168 .probe = brcmf_ops_sdio_probe,
1169 .remove = brcmf_ops_sdio_remove,
1170 .name = BRCMFMAC_SDIO_PDATA_NAME,
1171 .id_table = brcmf_sdmmc_ids,
1173 .owner = THIS_MODULE,
1174 #ifdef CONFIG_PM_SLEEP
1175 .pm = &brcmf_sdio_pm_ops,
1176 #endif /* CONFIG_PM_SLEEP */
1180 static int __init brcmf_sdio_pd_probe(struct platform_device *pdev)
1182 brcmf_dbg(SDIO, "Enter\n");
1184 brcmfmac_sdio_pdata = dev_get_platdata(&pdev->dev);
1186 if (brcmfmac_sdio_pdata->power_on)
1187 brcmfmac_sdio_pdata->power_on();
1192 static int brcmf_sdio_pd_remove(struct platform_device *pdev)
1194 brcmf_dbg(SDIO, "Enter\n");
1196 if (brcmfmac_sdio_pdata->power_off)
1197 brcmfmac_sdio_pdata->power_off();
1199 sdio_unregister_driver(&brcmf_sdmmc_driver);
1204 static struct platform_driver brcmf_sdio_pd = {
1205 .remove = brcmf_sdio_pd_remove,
1207 .name = BRCMFMAC_SDIO_PDATA_NAME,
1211 void brcmf_sdio_register(void)
1215 ret = sdio_register_driver(&brcmf_sdmmc_driver);
1217 brcmf_err("sdio_register_driver failed: %d\n", ret);
1220 void brcmf_sdio_exit(void)
1222 brcmf_dbg(SDIO, "Enter\n");
1224 if (brcmfmac_sdio_pdata)
1225 platform_driver_unregister(&brcmf_sdio_pd);
1227 sdio_unregister_driver(&brcmf_sdmmc_driver);
1230 void __init brcmf_sdio_init(void)
1234 brcmf_dbg(SDIO, "Enter\n");
1236 ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe);
1238 brcmf_dbg(SDIO, "No platform data available.\n");