2 * Copyright (c) 2010 Broadcom Corporation
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 /* ****************** SDIO CARD Interface Functions **************************/
18 #include <linux/types.h>
19 #include <linux/netdevice.h>
20 #include <linux/pci.h>
21 #include <linux/pci_ids.h>
22 #include <linux/sched.h>
23 #include <linux/completion.h>
24 #include <linux/interrupt.h>
25 #include <linux/scatterlist.h>
26 #include <linux/mmc/sdio.h>
27 #include <linux/mmc/core.h>
28 #include <linux/mmc/sdio_func.h>
29 #include <linux/mmc/card.h>
30 #include <linux/mmc/host.h>
31 #include <linux/pm_runtime.h>
32 #include <linux/suspend.h>
33 #include <linux/errno.h>
34 #include <linux/module.h>
35 #include <linux/acpi.h>
36 #include <net/cfg80211.h>
39 #include <brcm_hw_ids.h>
40 #include <brcmu_utils.h>
41 #include <brcmu_wifi.h>
42 #include <chipcommon.h>
51 #define SDIOH_API_ACCESS_RETRY_LIMIT 2
53 #define DMA_ALIGN_MASK 0x03
55 #define SDIO_FUNC1_BLOCKSIZE 64
56 #define SDIO_FUNC2_BLOCKSIZE 512
57 /* Maximum milliseconds to wait for F2 to come up */
58 #define SDIO_WAIT_F2RDY 3000
60 #define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */
62 struct brcmf_sdiod_freezer {
64 atomic_t thread_count;
66 wait_queue_head_t thread_freeze;
67 struct completion resumed;
70 static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id)
72 struct brcmf_bus *bus_if = dev_get_drvdata(dev_id);
73 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
75 brcmf_dbg(INTR, "OOB intr triggered\n");
77 /* out-of-band interrupt is level-triggered which won't
78 * be cleared until dpc
80 if (sdiodev->irq_en) {
81 disable_irq_nosync(irq);
82 sdiodev->irq_en = false;
85 brcmf_sdio_isr(sdiodev->bus);
90 static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func)
92 struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev);
93 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
95 brcmf_dbg(INTR, "IB intr triggered\n");
97 brcmf_sdio_isr(sdiodev->bus);
100 /* dummy handler for SDIO function 2 interrupt */
101 static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func)
105 int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev)
107 struct brcmfmac_sdio_pd *pdata;
110 u32 addr, gpiocontrol;
113 pdata = &sdiodev->settings->bus.sdio;
114 if (pdata->oob_irq_supported) {
115 brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n",
117 ret = request_irq(pdata->oob_irq_nr, brcmf_sdiod_oob_irqhandler,
118 pdata->oob_irq_flags, "brcmf_oob_intr",
119 &sdiodev->func[1]->dev);
121 brcmf_err("request_irq failed %d\n", ret);
124 sdiodev->oob_irq_requested = true;
125 spin_lock_init(&sdiodev->irq_en_lock);
126 spin_lock_irqsave(&sdiodev->irq_en_lock, flags);
127 sdiodev->irq_en = true;
128 spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags);
130 ret = enable_irq_wake(pdata->oob_irq_nr);
132 brcmf_err("enable_irq_wake failed %d\n", ret);
135 sdiodev->irq_wake = true;
137 sdio_claim_host(sdiodev->func[1]);
139 if (sdiodev->bus_if->chip == BRCM_CC_43362_CHIP_ID) {
140 /* assign GPIO to SDIO core */
141 addr = CORE_CC_REG(SI_ENUM_BASE, gpiocontrol);
142 gpiocontrol = brcmf_sdiod_regrl(sdiodev, addr, &ret);
144 brcmf_sdiod_regwl(sdiodev, addr, gpiocontrol, &ret);
146 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_SELECT, 0xf,
148 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_OUT, 0, &ret);
149 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_EN, 0x2, &ret);
152 /* must configure SDIO_CCCR_IENx to enable irq */
153 data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret);
154 data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1;
155 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret);
157 /* redirect, configure and enable io for interrupt signal */
158 data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE;
159 if (pdata->oob_irq_flags & IRQF_TRIGGER_HIGH)
160 data |= SDIO_SEPINT_ACT_HI;
161 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret);
163 sdio_release_host(sdiodev->func[1]);
165 brcmf_dbg(SDIO, "Entering\n");
166 sdio_claim_host(sdiodev->func[1]);
167 sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler);
168 sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler);
169 sdio_release_host(sdiodev->func[1]);
170 sdiodev->sd_irq_requested = true;
176 void brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
179 brcmf_dbg(SDIO, "Entering oob=%d sd=%d\n",
180 sdiodev->oob_irq_requested,
181 sdiodev->sd_irq_requested);
183 if (sdiodev->oob_irq_requested) {
184 struct brcmfmac_sdio_pd *pdata;
186 pdata = &sdiodev->settings->bus.sdio;
187 sdio_claim_host(sdiodev->func[1]);
188 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
189 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
190 sdio_release_host(sdiodev->func[1]);
192 sdiodev->oob_irq_requested = false;
193 if (sdiodev->irq_wake) {
194 disable_irq_wake(pdata->oob_irq_nr);
195 sdiodev->irq_wake = false;
197 free_irq(pdata->oob_irq_nr, &sdiodev->func[1]->dev);
198 sdiodev->irq_en = false;
199 sdiodev->oob_irq_requested = false;
202 if (sdiodev->sd_irq_requested) {
203 sdio_claim_host(sdiodev->func[1]);
204 sdio_release_irq(sdiodev->func[2]);
205 sdio_release_irq(sdiodev->func[1]);
206 sdio_release_host(sdiodev->func[1]);
207 sdiodev->sd_irq_requested = false;
211 void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev,
212 enum brcmf_sdiod_state state)
214 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM ||
215 state == sdiodev->state)
218 brcmf_dbg(TRACE, "%d -> %d\n", sdiodev->state, state);
219 switch (sdiodev->state) {
220 case BRCMF_SDIOD_DATA:
221 /* any other state means bus interface is down */
222 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN);
224 case BRCMF_SDIOD_DOWN:
225 /* transition from DOWN to DATA means bus interface is up */
226 if (state == BRCMF_SDIOD_DATA)
227 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_UP);
232 sdiodev->state = state;
235 static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func,
236 uint regaddr, u8 byte)
241 * Can only directly write to some F0 registers.
242 * Handle CCCR_IENx and CCCR_ABORT command
245 if ((regaddr == SDIO_CCCR_ABORT) ||
246 (regaddr == SDIO_CCCR_IENx))
247 sdio_writeb(func, byte, regaddr, &err_ret);
249 sdio_f0_writeb(func, byte, regaddr, &err_ret);
254 static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn,
255 u32 addr, u8 regsz, void *data, bool write)
257 struct sdio_func *func;
260 brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
261 write, fn, addr, regsz);
263 /* only allow byte access on F0 */
264 if (WARN_ON(regsz > 1 && !fn))
266 func = sdiodev->func[fn];
272 sdio_writeb(func, *(u8 *)data, addr, &ret);
274 ret = brcmf_sdiod_f0_writeb(func, addr,
278 *(u8 *)data = sdio_readb(func, addr, &ret);
280 *(u8 *)data = sdio_f0_readb(func, addr, &ret);
285 sdio_writew(func, *(u16 *)data, addr, &ret);
287 *(u16 *)data = sdio_readw(func, addr, &ret);
291 sdio_writel(func, *(u32 *)data, addr, &ret);
293 *(u32 *)data = sdio_readl(func, addr, &ret);
296 brcmf_err("invalid size: %d\n", regsz);
301 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
302 write ? "write" : "read", fn, addr, ret);
307 static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
308 u8 regsz, void *data, bool write)
314 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
318 * figure out how to read the register based on address range
319 * 0x00 ~ 0x7FF: function 0 CCCR and FBR
320 * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
321 * The rest: function 1 silicon backplane core registers
323 if ((addr & ~REG_F0_REG_MASK) == 0)
330 memset(data, 0, regsz);
331 /* for retry wait for 1 ms till bus get settled down */
333 usleep_range(1000, 2000);
334 ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz,
336 } while (ret != 0 && ret != -ENOMEDIUM &&
337 retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
339 if (ret == -ENOMEDIUM)
340 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
343 * SleepCSR register access can fail when
344 * waking up the device so reduce this noise
347 if (addr != SBSDIO_FUNC1_SLEEPCSR)
348 brcmf_err("failed to %s data F%d@0x%05x, err: %d\n",
349 write ? "write" : "read", func, addr, ret);
351 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
352 write ? "write" : "read", func, addr, ret);
358 brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
363 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
366 addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
367 addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK;
368 addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK;
370 for (i = 0; i < 3; i++) {
371 err = brcmf_sdiod_regrw_helper(sdiodev,
372 SBSDIO_FUNC1_SBADDRLOW + i,
373 sizeof(u8), &addr[i], true);
375 brcmf_err("failed at addr: 0x%0x\n",
376 SBSDIO_FUNC1_SBADDRLOW + i);
385 brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr)
387 uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
390 if (bar0 != sdiodev->sbwad) {
391 err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0);
395 sdiodev->sbwad = bar0;
398 *addr &= SBSDIO_SB_OFT_ADDR_MASK;
401 *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
406 u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
411 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
412 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
414 brcmf_dbg(SDIO, "data:0x%02x\n", data);
422 u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
427 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
428 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
431 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
433 brcmf_dbg(SDIO, "data:0x%08x\n", data);
442 void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
447 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data);
448 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
454 void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
459 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data);
460 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
463 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
471 static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn,
472 bool write, u32 addr, struct sk_buff *pkt)
477 /* Single skb use the standard mmc interface */
478 req_sz = pkt->len + 3;
482 err = sdio_memcpy_toio(sdiodev->func[fn], addr,
483 ((u8 *)(pkt->data)), req_sz);
485 err = sdio_memcpy_fromio(sdiodev->func[fn], ((u8 *)(pkt->data)),
488 /* function 2 read is FIFO operation */
489 err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr,
491 if (err == -ENOMEDIUM)
492 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
497 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access
498 * @sdiodev: brcmfmac sdio device
499 * @fn: SDIO function number
500 * @write: direction flag
501 * @addr: dongle memory address as source/destination
504 * This function takes the respbonsibility as the interface function to MMC
505 * stack for block data access. It assumes that the skb passed down by the
506 * caller has already been padded and aligned.
508 static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn,
509 bool write, u32 addr,
510 struct sk_buff_head *pktlist)
512 unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset;
513 unsigned int max_req_sz, orig_offset, dst_offset;
514 unsigned short max_seg_cnt, seg_sz;
515 unsigned char *pkt_data, *orig_data, *dst_data;
516 struct sk_buff *pkt_next = NULL, *local_pkt_next;
517 struct sk_buff_head local_list, *target_list;
518 struct mmc_request mmc_req;
519 struct mmc_command mmc_cmd;
520 struct mmc_data mmc_dat;
521 struct scatterlist *sgl;
527 target_list = pktlist;
528 /* for host with broken sg support, prepare a page aligned list */
529 __skb_queue_head_init(&local_list);
530 if (!write && sdiodev->settings->bus.sdio.broken_sg_support) {
532 skb_queue_walk(pktlist, pkt_next)
533 req_sz += pkt_next->len;
534 req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize);
535 while (req_sz > PAGE_SIZE) {
536 pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE);
537 if (pkt_next == NULL) {
541 __skb_queue_tail(&local_list, pkt_next);
544 pkt_next = brcmu_pkt_buf_get_skb(req_sz);
545 if (pkt_next == NULL) {
549 __skb_queue_tail(&local_list, pkt_next);
550 target_list = &local_list;
553 func_blk_sz = sdiodev->func[fn]->cur_blksize;
554 max_req_sz = sdiodev->max_request_size;
555 max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count,
557 seg_sz = target_list->qlen;
559 pkt_next = target_list->next;
561 memset(&mmc_req, 0, sizeof(struct mmc_request));
562 memset(&mmc_cmd, 0, sizeof(struct mmc_command));
563 memset(&mmc_dat, 0, sizeof(struct mmc_data));
565 mmc_dat.sg = sdiodev->sgtable.sgl;
566 mmc_dat.blksz = func_blk_sz;
567 mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
568 mmc_cmd.opcode = SD_IO_RW_EXTENDED;
569 mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */
570 mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */
571 mmc_cmd.arg |= 1<<27; /* block mode */
572 /* for function 1 the addr will be incremented */
573 mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0;
574 mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
575 mmc_req.cmd = &mmc_cmd;
576 mmc_req.data = &mmc_dat;
581 sgl = sdiodev->sgtable.sgl;
583 while (pkt_next != (struct sk_buff *)target_list) {
584 pkt_data = pkt_next->data + pkt_offset;
585 sg_data_sz = pkt_next->len - pkt_offset;
586 if (sg_data_sz > sdiodev->max_segment_size)
587 sg_data_sz = sdiodev->max_segment_size;
588 if (sg_data_sz > max_req_sz - req_sz)
589 sg_data_sz = max_req_sz - req_sz;
591 sg_set_buf(sgl, pkt_data, sg_data_sz);
595 req_sz += sg_data_sz;
596 pkt_offset += sg_data_sz;
597 if (pkt_offset == pkt_next->len) {
599 pkt_next = pkt_next->next;
602 if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt)
607 if (req_sz % func_blk_sz != 0) {
608 brcmf_err("sg request length %u is not %u aligned\n",
609 req_sz, func_blk_sz);
614 mmc_dat.sg_len = sg_cnt;
615 mmc_dat.blocks = req_sz / func_blk_sz;
616 mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */
617 mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */
618 /* incrementing addr for function 1 */
622 mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card);
623 mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req);
625 ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error;
626 if (ret == -ENOMEDIUM) {
627 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
629 } else if (ret != 0) {
630 brcmf_err("CMD53 sg block %s failed %d\n",
631 write ? "write" : "read", ret);
637 if (!write && sdiodev->settings->bus.sdio.broken_sg_support) {
638 local_pkt_next = local_list.next;
640 skb_queue_walk(pktlist, pkt_next) {
643 req_sz = local_pkt_next->len - orig_offset;
644 req_sz = min_t(uint, pkt_next->len - dst_offset,
646 orig_data = local_pkt_next->data + orig_offset;
647 dst_data = pkt_next->data + dst_offset;
648 memcpy(dst_data, orig_data, req_sz);
649 orig_offset += req_sz;
650 dst_offset += req_sz;
651 if (orig_offset == local_pkt_next->len) {
653 local_pkt_next = local_pkt_next->next;
655 if (dst_offset == pkt_next->len)
657 } while (!skb_queue_empty(&local_list));
662 sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents);
663 while ((pkt_next = __skb_dequeue(&local_list)) != NULL)
664 brcmu_pkt_buf_free_skb(pkt_next);
669 int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
671 struct sk_buff *mypkt;
674 mypkt = brcmu_pkt_buf_get_skb(nbytes);
676 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
681 err = brcmf_sdiod_recv_pkt(sdiodev, mypkt);
683 memcpy(buf, mypkt->data, nbytes);
685 brcmu_pkt_buf_free_skb(mypkt);
689 int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt)
691 u32 addr = sdiodev->sbwad;
694 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len);
696 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
700 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt);
706 int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
707 struct sk_buff_head *pktq, uint totlen)
709 struct sk_buff *glom_skb;
711 u32 addr = sdiodev->sbwad;
714 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n",
717 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
722 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
724 else if (!sdiodev->sg_support) {
725 glom_skb = brcmu_pkt_buf_get_skb(totlen);
728 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
731 brcmu_pkt_buf_free_skb(glom_skb);
735 skb_queue_walk(pktq, skb) {
736 memcpy(skb->data, glom_skb->data, skb->len);
737 skb_pull(glom_skb, skb->len);
740 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr,
747 int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
749 struct sk_buff *mypkt;
750 u32 addr = sdiodev->sbwad;
753 mypkt = brcmu_pkt_buf_get_skb(nbytes);
755 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
760 memcpy(mypkt->data, buf, nbytes);
762 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
765 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr,
768 brcmu_pkt_buf_free_skb(mypkt);
773 int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
774 struct sk_buff_head *pktq)
777 u32 addr = sdiodev->sbwad;
780 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen);
782 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
786 if (pktq->qlen == 1 || !sdiodev->sg_support)
787 skb_queue_walk(pktq, skb) {
788 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true,
794 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr,
801 brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
809 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
810 pkt = dev_alloc_skb(dsize);
812 brcmf_err("dev_alloc_skb failed: len %d\n", dsize);
817 /* Determine initial transfer parameters */
818 sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK;
819 if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK)
820 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr);
824 sdio_claim_host(sdiodev->func[1]);
826 /* Do the transfer(s) */
828 /* Set the backplane window to include the start address */
829 bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address);
833 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n",
834 write ? "write" : "read", dsize,
835 sdaddr, address & SBSDIO_SBWINDOW_MASK);
837 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK;
838 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
842 memcpy(pkt->data, data, dsize);
843 bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write,
846 brcmf_err("membytes transfer failed\n");
850 memcpy(data, pkt->data, dsize);
853 /* Adjust for next transfer (if any) */
859 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
865 /* Return the window to backplane enumeration space for core access */
866 if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad))
867 brcmf_err("FAILED to set window back to 0x%x\n",
870 sdio_release_host(sdiodev->func[1]);
875 int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
877 char t_func = (char)fn;
878 brcmf_dbg(SDIO, "Enter\n");
880 /* issue abort cmd52 command through F0 */
881 brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT,
882 sizeof(t_func), &t_func, true);
884 brcmf_dbg(SDIO, "Exit\n");
888 void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev)
890 struct sdio_func *func;
891 struct mmc_host *host;
896 func = sdiodev->func[2];
897 host = func->card->host;
898 sdiodev->sg_support = host->max_segs > 1;
899 max_blocks = min_t(uint, host->max_blk_count, 511u);
900 sdiodev->max_request_size = min_t(uint, host->max_req_size,
901 max_blocks * func->cur_blksize);
902 sdiodev->max_segment_count = min_t(uint, host->max_segs,
903 SG_MAX_SINGLE_ALLOC);
904 sdiodev->max_segment_size = host->max_seg_size;
906 if (!sdiodev->sg_support)
909 nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE,
910 sdiodev->settings->bus.sdio.txglomsz);
911 nents += (nents >> 4) + 1;
913 WARN_ON(nents > sdiodev->max_segment_count);
915 brcmf_dbg(TRACE, "nents=%d\n", nents);
916 err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL);
918 brcmf_err("allocation failed: disable scatter-gather");
919 sdiodev->sg_support = false;
922 sdiodev->txglomsz = sdiodev->settings->bus.sdio.txglomsz;
925 #ifdef CONFIG_PM_SLEEP
926 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev)
928 sdiodev->freezer = kzalloc(sizeof(*sdiodev->freezer), GFP_KERNEL);
929 if (!sdiodev->freezer)
931 atomic_set(&sdiodev->freezer->thread_count, 0);
932 atomic_set(&sdiodev->freezer->freezing, 0);
933 init_waitqueue_head(&sdiodev->freezer->thread_freeze);
934 init_completion(&sdiodev->freezer->resumed);
938 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev)
940 if (sdiodev->freezer) {
941 WARN_ON(atomic_read(&sdiodev->freezer->freezing));
942 kfree(sdiodev->freezer);
946 static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev *sdiodev)
948 atomic_t *expect = &sdiodev->freezer->thread_count;
951 sdiodev->freezer->frozen_count = 0;
952 reinit_completion(&sdiodev->freezer->resumed);
953 atomic_set(&sdiodev->freezer->freezing, 1);
954 brcmf_sdio_trigger_dpc(sdiodev->bus);
955 wait_event(sdiodev->freezer->thread_freeze,
956 atomic_read(expect) == sdiodev->freezer->frozen_count);
957 sdio_claim_host(sdiodev->func[1]);
958 res = brcmf_sdio_sleep(sdiodev->bus, true);
959 sdio_release_host(sdiodev->func[1]);
963 static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev *sdiodev)
965 sdio_claim_host(sdiodev->func[1]);
966 brcmf_sdio_sleep(sdiodev->bus, false);
967 sdio_release_host(sdiodev->func[1]);
968 atomic_set(&sdiodev->freezer->freezing, 0);
969 complete_all(&sdiodev->freezer->resumed);
972 bool brcmf_sdiod_freezing(struct brcmf_sdio_dev *sdiodev)
974 return atomic_read(&sdiodev->freezer->freezing);
977 void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev *sdiodev)
979 if (!brcmf_sdiod_freezing(sdiodev))
981 sdiodev->freezer->frozen_count++;
982 wake_up(&sdiodev->freezer->thread_freeze);
983 wait_for_completion(&sdiodev->freezer->resumed);
986 void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev *sdiodev)
988 atomic_inc(&sdiodev->freezer->thread_count);
991 void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev *sdiodev)
993 atomic_dec(&sdiodev->freezer->thread_count);
996 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev)
1001 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev)
1004 #endif /* CONFIG_PM_SLEEP */
1006 static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev)
1008 sdiodev->state = BRCMF_SDIOD_DOWN;
1010 brcmf_sdio_remove(sdiodev->bus);
1011 sdiodev->bus = NULL;
1014 brcmf_sdiod_freezer_detach(sdiodev);
1016 /* Disable Function 2 */
1017 sdio_claim_host(sdiodev->func[2]);
1018 sdio_disable_func(sdiodev->func[2]);
1019 sdio_release_host(sdiodev->func[2]);
1021 /* Disable Function 1 */
1022 sdio_claim_host(sdiodev->func[1]);
1023 sdio_disable_func(sdiodev->func[1]);
1024 sdio_release_host(sdiodev->func[1]);
1026 sg_free_table(&sdiodev->sgtable);
1029 pm_runtime_allow(sdiodev->func[1]->card->host->parent);
1033 static void brcmf_sdiod_host_fixup(struct mmc_host *host)
1035 /* runtime-pm powers off the device */
1036 pm_runtime_forbid(host->parent);
1037 /* avoid removal detection upon resume */
1038 host->caps |= MMC_CAP_NONREMOVABLE;
1041 static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev)
1045 sdiodev->num_funcs = 2;
1047 sdio_claim_host(sdiodev->func[1]);
1049 ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
1051 brcmf_err("Failed to set F1 blocksize\n");
1052 sdio_release_host(sdiodev->func[1]);
1055 ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
1057 brcmf_err("Failed to set F2 blocksize\n");
1058 sdio_release_host(sdiodev->func[1]);
1062 /* increase F2 timeout */
1063 sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY;
1065 /* Enable Function 1 */
1066 ret = sdio_enable_func(sdiodev->func[1]);
1067 sdio_release_host(sdiodev->func[1]);
1069 brcmf_err("Failed to enable F1: err=%d\n", ret);
1073 ret = brcmf_sdiod_freezer_attach(sdiodev);
1077 /* try to attach to the target device */
1078 sdiodev->bus = brcmf_sdio_probe(sdiodev);
1079 if (!sdiodev->bus) {
1083 brcmf_sdiod_host_fixup(sdiodev->func[2]->card->host);
1086 brcmf_sdiod_remove(sdiodev);
1091 #define BRCMF_SDIO_DEVICE(dev_id) \
1092 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)}
1094 /* devices we support, null terminated */
1095 static const struct sdio_device_id brcmf_sdmmc_ids[] = {
1096 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143),
1097 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241),
1098 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329),
1099 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330),
1100 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334),
1101 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340),
1102 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341),
1103 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362),
1104 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339),
1105 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4339),
1106 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430),
1107 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345),
1108 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43455),
1109 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354),
1110 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4356),
1111 { /* end: all zeroes */ }
1113 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
1116 static void brcmf_sdiod_acpi_set_power_manageable(struct device *dev,
1119 #if IS_ENABLED(CONFIG_ACPI)
1120 struct acpi_device *adev;
1122 adev = ACPI_COMPANION(dev);
1124 adev->flags.power_manageable = 0;
1128 static int brcmf_ops_sdio_probe(struct sdio_func *func,
1129 const struct sdio_device_id *id)
1132 struct brcmf_sdio_dev *sdiodev;
1133 struct brcmf_bus *bus_if;
1136 brcmf_dbg(SDIO, "Enter\n");
1137 brcmf_dbg(SDIO, "Class=%x\n", func->class);
1138 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1139 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1140 brcmf_dbg(SDIO, "Function#: %d\n", func->num);
1143 /* prohibit ACPI power management for this device */
1144 brcmf_sdiod_acpi_set_power_manageable(dev, 0);
1146 /* Consume func num 1 but dont do anything with it. */
1150 /* Ignore anything but func 2 */
1154 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
1157 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
1163 /* store refs to functions used. mmc_card does
1164 * not hold the F0 function pointer.
1166 sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL);
1167 sdiodev->func[0]->num = 0;
1168 sdiodev->func[1] = func->card->sdio_func[0];
1169 sdiodev->func[2] = func;
1171 sdiodev->bus_if = bus_if;
1172 bus_if->bus_priv.sdio = sdiodev;
1173 bus_if->proto_type = BRCMF_PROTO_BCDC;
1174 dev_set_drvdata(&func->dev, bus_if);
1175 dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
1176 sdiodev->dev = &sdiodev->func[1]->dev;
1178 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN);
1180 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n");
1181 err = brcmf_sdiod_probe(sdiodev);
1183 brcmf_err("F2 error, probe failed %d...\n", err);
1187 brcmf_dbg(SDIO, "F2 init completed...\n");
1191 dev_set_drvdata(&func->dev, NULL);
1192 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1193 kfree(sdiodev->func[0]);
1199 static void brcmf_ops_sdio_remove(struct sdio_func *func)
1201 struct brcmf_bus *bus_if;
1202 struct brcmf_sdio_dev *sdiodev;
1204 brcmf_dbg(SDIO, "Enter\n");
1205 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1206 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1207 brcmf_dbg(SDIO, "Function: %d\n", func->num);
1209 bus_if = dev_get_drvdata(&func->dev);
1211 sdiodev = bus_if->bus_priv.sdio;
1213 /* start by unregistering irqs */
1214 brcmf_sdiod_intr_unregister(sdiodev);
1219 /* only proceed with rest of cleanup if func 1 */
1220 brcmf_sdiod_remove(sdiodev);
1222 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1223 dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
1226 kfree(sdiodev->func[0]);
1230 brcmf_dbg(SDIO, "Exit\n");
1233 void brcmf_sdio_wowl_config(struct device *dev, bool enabled)
1235 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1236 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1238 brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled);
1239 sdiodev->wowl_enabled = enabled;
1242 #ifdef CONFIG_PM_SLEEP
1243 static int brcmf_ops_sdio_suspend(struct device *dev)
1245 struct sdio_func *func;
1246 struct brcmf_bus *bus_if;
1247 struct brcmf_sdio_dev *sdiodev;
1248 mmc_pm_flag_t sdio_flags;
1250 func = container_of(dev, struct sdio_func, dev);
1251 brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1252 if (func->num != SDIO_FUNC_1)
1256 bus_if = dev_get_drvdata(dev);
1257 sdiodev = bus_if->bus_priv.sdio;
1259 brcmf_sdiod_freezer_on(sdiodev);
1260 brcmf_sdio_wd_timer(sdiodev->bus, 0);
1262 sdio_flags = MMC_PM_KEEP_POWER;
1263 if (sdiodev->wowl_enabled) {
1264 if (sdiodev->settings->bus.sdio.oob_irq_supported)
1265 enable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr);
1267 sdio_flags |= MMC_PM_WAKE_SDIO_IRQ;
1269 if (sdio_set_host_pm_flags(sdiodev->func[1], sdio_flags))
1270 brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
1274 static int brcmf_ops_sdio_resume(struct device *dev)
1276 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1277 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1278 struct sdio_func *func = container_of(dev, struct sdio_func, dev);
1280 brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1281 if (func->num != SDIO_FUNC_2)
1284 brcmf_sdiod_freezer_off(sdiodev);
1288 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
1289 .suspend = brcmf_ops_sdio_suspend,
1290 .resume = brcmf_ops_sdio_resume,
1292 #endif /* CONFIG_PM_SLEEP */
1294 static struct sdio_driver brcmf_sdmmc_driver = {
1295 .probe = brcmf_ops_sdio_probe,
1296 .remove = brcmf_ops_sdio_remove,
1297 .name = KBUILD_MODNAME,
1298 .id_table = brcmf_sdmmc_ids,
1300 .owner = THIS_MODULE,
1301 #ifdef CONFIG_PM_SLEEP
1302 .pm = &brcmf_sdio_pm_ops,
1303 #endif /* CONFIG_PM_SLEEP */
1307 void brcmf_sdio_register(void)
1311 ret = sdio_register_driver(&brcmf_sdmmc_driver);
1313 brcmf_err("sdio_register_driver failed: %d\n", ret);
1316 void brcmf_sdio_exit(void)
1318 brcmf_dbg(SDIO, "Enter\n");
1320 sdio_unregister_driver(&brcmf_sdmmc_driver);