[deliverable/linux.git] / drivers / net / wireless / brcm80211 / brcmfmac / bcmsdh.c

/*
 * Copyright (c) 2010 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
/* ****************** SDIO CARD Interface Functions **************************/

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/types.h>
#include <linux/netdevice.h>
#include <linux/export.h>
#include <linux/pci.h>
#include <linux/pci_ids.h>
#include <linux/sched.h>
#include <linux/completion.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/card.h>

#include <defs.h>
#include <brcm_hw_ids.h>
#include <brcmu_utils.h>
#include <brcmu_wifi.h>
#include <soc.h>
#include "dhd_bus.h"
#include "dhd_dbg.h"
#include "sdio_host.h"

#define SDIOH_API_ACCESS_RETRY_LIMIT	2

#ifdef CONFIG_BRCMFMAC_SDIO_OOB
static irqreturn_t brcmf_sdio_irqhandler(int irq, void *dev_id)
{
	struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(dev_id);

	brcmf_dbg(INTR, "oob intr triggered\n");

	/*
	 * out-of-band interrupt is level-triggered which won't
	 * be cleared until dpc
	 */
	if (sdiodev->irq_en) {
		disable_irq_nosync(irq);
		sdiodev->irq_en = false;
	}

	brcmf_sdbrcm_isr(sdiodev->bus);

	return IRQ_HANDLED;
}

int brcmf_sdio_intr_register(struct brcmf_sdio_dev *sdiodev)
{
	int ret = 0;
	u8 data;
	unsigned long flags;

	brcmf_dbg(TRACE, "Entering\n");

	brcmf_dbg(ERROR, "requesting irq %d\n", sdiodev->irq);
	ret = request_irq(sdiodev->irq, brcmf_sdio_irqhandler,
			  sdiodev->irq_flags, "brcmf_oob_intr",
			  &sdiodev->func[1]->card->dev);
	if (ret != 0)
		return ret;
	spin_lock_init(&sdiodev->irq_en_lock);
	spin_lock_irqsave(&sdiodev->irq_en_lock, flags);
	sdiodev->irq_en = true;
	spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags);

	ret = enable_irq_wake(sdiodev->irq);
	if (ret != 0)
		return ret;
	sdiodev->irq_wake = true;

	/* must configure SDIO_CCCR_IENx to enable irq */
	data = brcmf_sdcard_cfg_read(sdiodev, SDIO_FUNC_0,
				     SDIO_CCCR_IENx, &ret);
	data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1;
	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_0, SDIO_CCCR_IENx,
			       data, &ret);

	/* redirect, configure ane enable io for interrupt signal */
	data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE;
	if (sdiodev->irq_flags | IRQF_TRIGGER_HIGH)
		data |= SDIO_SEPINT_ACT_HI;
	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_0, SDIO_CCCR_BRCM_SEPINT,
			       data, &ret);

	return 0;
}

int brcmf_sdio_intr_unregister(struct brcmf_sdio_dev *sdiodev)
{
	brcmf_dbg(TRACE, "Entering\n");

	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_0, SDIO_CCCR_BRCM_SEPINT,
			       0, NULL);
	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_0, SDIO_CCCR_IENx, 0, NULL);

	if (sdiodev->irq_wake) {
		disable_irq_wake(sdiodev->irq);
		sdiodev->irq_wake = false;
	}
	free_irq(sdiodev->irq, &sdiodev->func[1]->card->dev);
	sdiodev->irq_en = false;

	return 0;
}
#else		/* CONFIG_BRCMFMAC_SDIO_OOB */
static void brcmf_sdio_irqhandler(struct sdio_func *func)
{
	struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);

	brcmf_dbg(INTR, "ib intr triggered\n");

	brcmf_sdbrcm_isr(sdiodev->bus);
}

/* dummy handler for SDIO function 2 interrupt */
static void brcmf_sdio_dummy_irqhandler(struct sdio_func *func)
{
}

int brcmf_sdio_intr_register(struct brcmf_sdio_dev *sdiodev)
{
	brcmf_dbg(TRACE, "Entering\n");

	sdio_claim_host(sdiodev->func[1]);
	sdio_claim_irq(sdiodev->func[1], brcmf_sdio_irqhandler);
	sdio_claim_irq(sdiodev->func[2], brcmf_sdio_dummy_irqhandler);
	sdio_release_host(sdiodev->func[1]);

	return 0;
}

int brcmf_sdio_intr_unregister(struct brcmf_sdio_dev *sdiodev)
{
	brcmf_dbg(TRACE, "Entering\n");

	sdio_claim_host(sdiodev->func[1]);
	sdio_release_irq(sdiodev->func[2]);
	sdio_release_irq(sdiodev->func[1]);
	sdio_release_host(sdiodev->func[1]);

	return 0;
}
#endif		/* CONFIG_BRCMFMAC_SDIO_OOB */

u8 brcmf_sdcard_cfg_read(struct brcmf_sdio_dev *sdiodev, uint fnc_num, u32 addr,
			 int *err)
{
	int status;
	s32 retry = 0;
	u8 data = 0;

	do {
		if (retry)	/* wait for 1 ms till bus get settled down */
			udelay(1000);
		status = brcmf_sdioh_request_byte(sdiodev, SDIOH_READ, fnc_num,
						  addr, (u8 *) &data);
	} while (status != 0
		 && (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
	if (err)
		*err = status;

	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, u8data = 0x%x\n",
		  fnc_num, addr, data);

	return data;
}

void
brcmf_sdcard_cfg_write(struct brcmf_sdio_dev *sdiodev, uint fnc_num, u32 addr,
		       u8 data, int *err)
{
	int status;
	s32 retry = 0;

	do {
		if (retry)	/* wait for 1 ms till bus get settled down */
			udelay(1000);
		status = brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, fnc_num,
						  addr, (u8 *) &data);
	} while (status != 0
		 && (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
	if (err)
		*err = status;

	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, u8data = 0x%x\n",
		  fnc_num, addr, data);
}

int
brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
{
	int err = 0, i;
	u8 addr[3];
	s32 retry;

	addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
	addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK;
	addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK;

	for (i = 0; i < 3; i++) {
		retry = 0;
		do {
			if (retry)
				usleep_range(1000, 2000);
			err = brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE,
					SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW + i,
					&addr[i]);
		} while (err != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);

		if (err) {
			brcmf_dbg(ERROR, "failed at addr:0x%0x\n",
				  SBSDIO_FUNC1_SBADDRLOW + i);
			break;
		}
	}

	return err;
}

static int
brcmf_sdio_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
			void *data, bool write)
{
	u8 func_num, reg_size;
	u32 bar;
	s32 retry = 0;
	int ret;

	/*
	 * figure out how to read the register based on address range
	 * 0x00 ~ 0xFF: function 0 CCCR
	 * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
	 * The rest: function 1 silicon backplane core registers
	 */
	if ((addr & ~REG_F0_CCCR_MASK) == 0) {
		func_num = SDIO_FUNC_0;
		reg_size = 1;
	} else if ((addr & ~REG_F1_MISC_MASK) == 0) {
		func_num = SDIO_FUNC_1;
		reg_size = 1;
	} else {
		func_num = SDIO_FUNC_1;
		reg_size = 4;

		/* Set the window for SB core register */
		bar = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
		if (bar != sdiodev->sbwad) {
			ret = brcmf_sdcard_set_sbaddr_window(sdiodev, bar);
			if (ret != 0) {
				memset(data, 0xFF, reg_size);
				return ret;
			}
			sdiodev->sbwad = bar;
		}
		addr &= SBSDIO_SB_OFT_ADDR_MASK;
		addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
	}

	do {
		if (!write)
			memset(data, 0, reg_size);
		if (retry)	/* wait for 1 ms till bus get settled down */
			usleep_range(1000, 2000);
		if (reg_size == 1)
			ret = brcmf_sdioh_request_byte(sdiodev, write,
						       func_num, addr, data);
		else
			ret = brcmf_sdioh_request_word(sdiodev, write,
						       func_num, addr, data, 4);
	} while (ret != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);

	sdiodev->regfail = (ret != 0);
	if (sdiodev->regfail)
		brcmf_dbg(ERROR, "failed with %d\n", ret);

	return ret;
}

u8 brcmf_sdio_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
{
	u8 data;
	int retval;

	brcmf_dbg(INFO, "addr:0x%08x\n", addr);
	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false);
	brcmf_dbg(INFO, "data:0x%02x\n", data);

	if (ret)
		*ret = retval;

	return data;
}

u32 brcmf_sdio_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
{
	u32 data;
	int retval;

	brcmf_dbg(INFO, "addr:0x%08x\n", addr);
	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false);
	brcmf_dbg(INFO, "data:0x%08x\n", data);

	if (ret)
		*ret = retval;

	return data;
}

void brcmf_sdio_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
		      u8 data, int *ret)
{
	int retval;

	brcmf_dbg(INFO, "addr:0x%08x, data:0x%02x\n", addr, data);
	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true);

	if (ret)
		*ret = retval;
}

void brcmf_sdio_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
		      u32 data, int *ret)
{
	int retval;

	brcmf_dbg(INFO, "addr:0x%08x, data:0x%08x\n", addr, data);
	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true);

	if (ret)
		*ret = retval;
}

u32 brcmf_sdcard_reg_read(struct brcmf_sdio_dev *sdiodev, u32 addr)
{
	int status;
	u32 word = 0;
	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;

	brcmf_dbg(INFO, "fun = 1, addr = 0x%x\n", addr);

	if (bar0 != sdiodev->sbwad) {
		if (brcmf_sdcard_set_sbaddr_window(sdiodev, bar0))
			return 0xFFFFFFFF;

		sdiodev->sbwad = bar0;
	}

	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;

	status = brcmf_sdioh_request_word(sdiodev, SDIOH_READ, SDIO_FUNC_1,
					  addr, &word, 4);

	sdiodev->regfail = (status != 0);

	if (status == 0) {
		brcmf_dbg(INFO, "data = 0x%x\n", word);
		return word;
	} else {
		brcmf_dbg(ERROR, "failed %d at addr 0x%04x\n", status, addr);
		return 0xFFFFFFFF;
	}
}

u32 brcmf_sdcard_reg_write(struct brcmf_sdio_dev *sdiodev, u32 addr, u32 data)
{
	int status;
	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	int err = 0;

	brcmf_dbg(INFO, "fun = 1, addr = 0x%x, uint32data = 0x%x\n",
		  addr, data);

	if (bar0 != sdiodev->sbwad) {
		err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
		if (err)
			return err;

		sdiodev->sbwad = bar0;
	}

	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
	status =
	    brcmf_sdioh_request_word(sdiodev, SDIOH_WRITE, SDIO_FUNC_1,
				     addr, &data, 4);
	sdiodev->regfail = (status != 0);

	if (status == 0)
		return 0;

	brcmf_dbg(ERROR, "error writing 0x%08x to addr 0x%04x\n",
		  data, addr);
	return 0xFFFFFFFF;
}

bool brcmf_sdcard_regfail(struct brcmf_sdio_dev *sdiodev)
{
	return sdiodev->regfail;
}

static int brcmf_sdcard_recv_prepare(struct brcmf_sdio_dev *sdiodev, uint fn,
				     uint flags, uint width, u32 *addr)
{
	uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	int err = 0;

	/* Async not implemented yet */
	if (flags & SDIO_REQ_ASYNC)
		return -ENOTSUPP;

	if (bar0 != sdiodev->sbwad) {
		err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
		if (err)
			return err;

		sdiodev->sbwad = bar0;
	}

	*addr &= SBSDIO_SB_OFT_ADDR_MASK;

	if (width == 4)
		*addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;

	return 0;
}

int
brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
		      uint flags, u8 *buf, uint nbytes)
{
	struct sk_buff *mypkt;
	int err;

	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	if (!mypkt) {
		brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
			  nbytes);
		return -EIO;
	}

	err = brcmf_sdcard_recv_pkt(sdiodev, addr, fn, flags, mypkt);
	if (!err)
		memcpy(buf, mypkt->data, nbytes);

	brcmu_pkt_buf_free_skb(mypkt);
	return err;
}

int
brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
		      uint flags, struct sk_buff *pkt)
{
	uint incr_fix;
	uint width;
	int err = 0;

	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
		  fn, addr, pkt->len);

	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
	if (err)
		return err;

	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	err = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_READ,
					 fn, addr, pkt);

	return err;
}

int brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
			    uint flags, struct sk_buff_head *pktq)
{
	uint incr_fix;
	uint width;
	int err = 0;

	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
		  fn, addr, pktq->qlen);

	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
	if (err)
		return err;

	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	err = brcmf_sdioh_request_chain(sdiodev, incr_fix, SDIOH_READ, fn, addr,
					pktq);

	return err;
}

int
brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
		      uint flags, u8 *buf, uint nbytes)
{
	struct sk_buff *mypkt;
	int err;

	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	if (!mypkt) {
		brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
			  nbytes);
		return -EIO;
	}

	memcpy(mypkt->data, buf, nbytes);
	err = brcmf_sdcard_send_pkt(sdiodev, addr, fn, flags, mypkt);

	brcmu_pkt_buf_free_skb(mypkt);
	return err;

}

int
brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
		      uint flags, struct sk_buff *pkt)
{
	uint incr_fix;
	uint width;
	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	int err = 0;

	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
		  fn, addr, pkt->len);

	/* Async not implemented yet */
	if (flags & SDIO_REQ_ASYNC)
		return -ENOTSUPP;

	if (bar0 != sdiodev->sbwad) {
		err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
		if (err)
			return err;

		sdiodev->sbwad = bar0;
	}

	addr &= SBSDIO_SB_OFT_ADDR_MASK;

	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	if (width == 4)
		addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;

	return brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_WRITE, fn,
					  addr, pkt);
}

int brcmf_sdcard_rwdata(struct brcmf_sdio_dev *sdiodev, uint rw, u32 addr,
			u8 *buf, uint nbytes)
{
	struct sk_buff *mypkt;
	bool write = rw ? SDIOH_WRITE : SDIOH_READ;
	int err;

	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;

	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	if (!mypkt) {
		brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
			  nbytes);
		return -EIO;
	}

	/* For a write, copy the buffer data into the packet. */
	if (write)
		memcpy(mypkt->data, buf, nbytes);

	err = brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_INC, write,
					 SDIO_FUNC_1, addr, mypkt);

	/* For a read, copy the packet data back to the buffer. */
	if (!err && !write)
		memcpy(buf, mypkt->data, nbytes);

	brcmu_pkt_buf_free_skb(mypkt);
	return err;
}

int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
{
	char t_func = (char)fn;
	brcmf_dbg(TRACE, "Enter\n");

	/* issue abort cmd52 command through F0 */
	brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0,
				 SDIO_CCCR_ABORT, &t_func);

	brcmf_dbg(TRACE, "Exit\n");
	return 0;
}

int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
{
	u32 regs = 0;
	int ret = 0;

	ret = brcmf_sdioh_attach(sdiodev);
	if (ret)
		goto out;

	regs = SI_ENUM_BASE;

	/* Report the BAR, to fix if needed */
	sdiodev->sbwad = SI_ENUM_BASE;

	/* try to attach to the target device */
	sdiodev->bus = brcmf_sdbrcm_probe(regs, sdiodev);
	if (!sdiodev->bus) {
		brcmf_dbg(ERROR, "device attach failed\n");
		ret = -ENODEV;
		goto out;
	}

out:
	if (ret)
		brcmf_sdio_remove(sdiodev);

	return ret;
}
EXPORT_SYMBOL(brcmf_sdio_probe);

int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev)
{
	if (sdiodev->bus) {
		brcmf_sdbrcm_disconnect(sdiodev->bus);
		sdiodev->bus = NULL;
	}

	brcmf_sdioh_detach(sdiodev);

	sdiodev->sbwad = 0;

	return 0;
}
EXPORT_SYMBOL(brcmf_sdio_remove);

void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable)
{
	if (enable)
		brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
	else
		brcmf_sdbrcm_wd_timer(sdiodev->bus, 0);
}
Commit	Line	Data
5b435de0 AS	1	/*
	2	* Copyright (c) 2010 Broadcom Corporation
	3	*
	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.
	7	*
	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.
	15	*/
	16	/* **************** SDIO CARD Interface Functions ************************/
	17
02f77195 JP	18	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
02f77195 JP	19
5b435de0 AS	20	#include <linux/types.h>
5b435de0 AS	21	#include <linux/netdevice.h>
ee40fa06	22	#include <linux/export.h>
5b435de0 AS	23	#include <linux/pci.h>
	24	#include <linux/pci_ids.h>
	25	#include <linux/sched.h>
	26	#include <linux/completion.h>
	27	#include <linux/mmc/sdio.h>
	28	#include <linux/mmc/sdio_func.h>
	29	#include <linux/mmc/card.h>
	30
	31	#include <defs.h>
	32	#include <brcm_hw_ids.h>
	33	#include <brcmu_utils.h>
	34	#include <brcmu_wifi.h>
	35	#include <soc.h>
5b435de0 AS	36	#include "dhd_bus.h"
	37	#include "dhd_dbg.h"
	38	#include "sdio_host.h"
	39
	40	#define SDIOH_API_ACCESS_RETRY_LIMIT 2
	41
ba89bf19 FL	42	#ifdef CONFIG_BRCMFMAC_SDIO_OOB
	43	static irqreturn_t brcmf_sdio_irqhandler(int irq, void *dev_id)
	44	{
	45	struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(dev_id);
	46
	47	brcmf_dbg(INTR, "oob intr triggered\n");
	48
	49	/*
	50	* out-of-band interrupt is level-triggered which won't
	51	* be cleared until dpc
	52	*/
	53	if (sdiodev->irq_en) {
	54	disable_irq_nosync(irq);
	55	sdiodev->irq_en = false;
	56	}
	57
	58	brcmf_sdbrcm_isr(sdiodev->bus);
	59
	60	return IRQ_HANDLED;
	61	}
	62
	63	int brcmf_sdio_intr_register(struct brcmf_sdio_dev *sdiodev)
	64	{
	65	int ret = 0;
	66	u8 data;
	67	unsigned long flags;
	68
	69	brcmf_dbg(TRACE, "Entering\n");
	70
	71	brcmf_dbg(ERROR, "requesting irq %d\n", sdiodev->irq);
	72	ret = request_irq(sdiodev->irq, brcmf_sdio_irqhandler,
	73	sdiodev->irq_flags, "brcmf_oob_intr",
	74	&sdiodev->func[1]->card->dev);
	75	if (ret != 0)
	76	return ret;
	77	spin_lock_init(&sdiodev->irq_en_lock);
	78	spin_lock_irqsave(&sdiodev->irq_en_lock, flags);
	79	sdiodev->irq_en = true;
	80	spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags);
	81
	82	ret = enable_irq_wake(sdiodev->irq);
	83	if (ret != 0)
	84	return ret;
	85	sdiodev->irq_wake = true;
	86
	87	/* must configure SDIO_CCCR_IENx to enable irq */
	88	data = brcmf_sdcard_cfg_read(sdiodev, SDIO_FUNC_0,
	89	SDIO_CCCR_IENx, &ret);
	90	data \|= 1 << SDIO_FUNC_1 \| 1 << SDIO_FUNC_2 \| 1;
	91	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_0, SDIO_CCCR_IENx,
	92	data, &ret);
	93
	94	/* redirect, configure ane enable io for interrupt signal */
	95	data = SDIO_SEPINT_MASK \| SDIO_SEPINT_OE;
	96	if (sdiodev->irq_flags \| IRQF_TRIGGER_HIGH)
	97	data \|= SDIO_SEPINT_ACT_HI;
	98	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_0, SDIO_CCCR_BRCM_SEPINT,
	99	data, &ret);
	100
	101	return 0;
	102	}
	103
	104	int brcmf_sdio_intr_unregister(struct brcmf_sdio_dev *sdiodev)
	105	{
106	brcmf_dbg(TRACE, "Entering\n");
107
108	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_0, SDIO_CCCR_BRCM_SEPINT,
109	0, NULL);
110	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_0, SDIO_CCCR_IENx, 0, NULL);
111
112	if (sdiodev->irq_wake) {
113	disable_irq_wake(sdiodev->irq);
114	sdiodev->irq_wake = false;
115	}
116	free_irq(sdiodev->irq, &sdiodev->func[1]->card->dev);
117	sdiodev->irq_en = false;
118
119	return 0;
120	}
121	#else /* CONFIG_BRCMFMAC_SDIO_OOB */
122	static void brcmf_sdio_irqhandler(struct sdio_func *func)
5b435de0	123	{
d76d1c8c	124	struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
5b435de0	125
ba89bf19	126	brcmf_dbg(INTR, "ib intr triggered\n");
5b435de0	127
5b435de0	128	brcmf_sdbrcm_isr(sdiodev->bus);
5b435de0 AS	129	}
5b435de0 AS	130
fbf59108	131	/* dummy handler for SDIO function 2 interrupt */
ba89bf19	132	static void brcmf_sdio_dummy_irqhandler(struct sdio_func *func)
fbf59108 FL	133	{
	134	}
	135
ba89bf19	136	int brcmf_sdio_intr_register(struct brcmf_sdio_dev *sdiodev)
5b435de0 AS	137	{
	138	brcmf_dbg(TRACE, "Entering\n");
	139
	140	sdio_claim_host(sdiodev->func[1]);
ba89bf19 FL	141	sdio_claim_irq(sdiodev->func[1], brcmf_sdio_irqhandler);
ba89bf19 FL	142	sdio_claim_irq(sdiodev->func[2], brcmf_sdio_dummy_irqhandler);
5b435de0 AS	143	sdio_release_host(sdiodev->func[1]);
	144
	145	return 0;
	146	}
	147
ba89bf19	148	int brcmf_sdio_intr_unregister(struct brcmf_sdio_dev *sdiodev)
5b435de0 AS	149	{
	150	brcmf_dbg(TRACE, "Entering\n");
	151
	152	sdio_claim_host(sdiodev->func[1]);
fbf59108	153	sdio_release_irq(sdiodev->func[2]);
5b435de0 AS	154	sdio_release_irq(sdiodev->func[1]);
	155	sdio_release_host(sdiodev->func[1]);
	156
	157	return 0;
	158	}
ba89bf19	159	#endif /* CONFIG_BRCMFMAC_SDIO_OOB */
5b435de0 AS	160
	161	u8 brcmf_sdcard_cfg_read(struct brcmf_sdio_dev *sdiodev, uint fnc_num, u32 addr,
	162	int *err)
	163	{
	164	int status;
	165	s32 retry = 0;
	166	u8 data = 0;
	167
	168	do {
	169	if (retry) /* wait for 1 ms till bus get settled down */
	170	udelay(1000);
	171	status = brcmf_sdioh_request_byte(sdiodev, SDIOH_READ, fnc_num,
	172	addr, (u8 *) &data);
	173	} while (status != 0
	174	&& (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
	175	if (err)
	176	*err = status;
	177
	178	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, u8data = 0x%x\n",
	179	fnc_num, addr, data);
	180
	181	return data;
	182	}
	183
	184	void
	185	brcmf_sdcard_cfg_write(struct brcmf_sdio_dev *sdiodev, uint fnc_num, u32 addr,
	186	u8 data, int *err)
	187	{
	188	int status;
	189	s32 retry = 0;
	190
	191	do {
	192	if (retry) /* wait for 1 ms till bus get settled down */
	193	udelay(1000);
	194	status = brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, fnc_num,
	195	addr, (u8 *) &data);
	196	} while (status != 0
	197	&& (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
	198	if (err)
	199	*err = status;
	200
	201	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, u8data = 0x%x\n",
	202	fnc_num, addr, data);
	203	}
	204
	205	int
	206	brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
	207	{
7d9cfc28 FL	208	int err = 0, i;
	209	u8 addr[3];
	210	s32 retry;
	211
	212	addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
	213	addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK;
	214	addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK;
	215
	216	for (i = 0; i < 3; i++) {
	217	retry = 0;
	218	do {
	219	if (retry)
	220	usleep_range(1000, 2000);
	221	err = brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE,
	222	SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW + i,
	223	&addr[i]);
	224	} while (err != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
	225
	226	if (err) {
	227	brcmf_dbg(ERROR, "failed at addr:0x%0x\n",
	228	SBSDIO_FUNC1_SBADDRLOW + i);
	229	break;
	230	}
	231	}
5b435de0 AS	232
	233	return err;
	234	}
	235
e9b8d91d FL	236	static int
	237	brcmf_sdio_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
	238	void *data, bool write)
	239	{
	240	u8 func_num, reg_size;
	241	u32 bar;
	242	s32 retry = 0;
	243	int ret;
	244
	245	/*
	246	* figure out how to read the register based on address range
	247	* 0x00 ~ 0xFF: function 0 CCCR
	248	* 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
	249	* The rest: function 1 silicon backplane core registers
	250	*/
	251	if ((addr & ~REG_F0_CCCR_MASK) == 0) {
	252	func_num = SDIO_FUNC_0;
	253	reg_size = 1;
	254	} else if ((addr & ~REG_F1_MISC_MASK) == 0) {
	255	func_num = SDIO_FUNC_1;
	256	reg_size = 1;
	257	} else {
	258	func_num = SDIO_FUNC_1;
	259	reg_size = 4;
	260
	261	/* Set the window for SB core register */
	262	bar = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	263	if (bar != sdiodev->sbwad) {
	264	ret = brcmf_sdcard_set_sbaddr_window(sdiodev, bar);
	265	if (ret != 0) {
	266	memset(data, 0xFF, reg_size);
	267	return ret;
	268	}
	269	sdiodev->sbwad = bar;
	270	}
	271	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	272	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	273	}
	274
	275	do {
	276	if (!write)
	277	memset(data, 0, reg_size);
	278	if (retry) /* wait for 1 ms till bus get settled down */
	279	usleep_range(1000, 2000);
	280	if (reg_size == 1)
	281	ret = brcmf_sdioh_request_byte(sdiodev, write,
	282	func_num, addr, data);
	283	else
	284	ret = brcmf_sdioh_request_word(sdiodev, write,
	285	func_num, addr, data, 4);
	286	} while (ret != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
	287
	288	sdiodev->regfail = (ret != 0);
	289	if (sdiodev->regfail)
	290	brcmf_dbg(ERROR, "failed with %d\n", ret);
	291
	292	return ret;
	293	}
	294
	295	u8 brcmf_sdio_regrb(struct brcmf_sdio_dev sdiodev, u32 addr, int ret)
	296	{
	297	u8 data;
	298	int retval;
	299
300	brcmf_dbg(INFO, "addr:0x%08x\n", addr);
301	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false);
302	brcmf_dbg(INFO, "data:0x%02x\n", data);
303
304	if (ret)
305	*ret = retval;
306
307	return data;
308	}
309
310	u32 brcmf_sdio_regrl(struct brcmf_sdio_dev sdiodev, u32 addr, int ret)
311	{
312	u32 data;
313	int retval;
314
315	brcmf_dbg(INFO, "addr:0x%08x\n", addr);
316	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false);
317	brcmf_dbg(INFO, "data:0x%08x\n", data);
318
319	if (ret)
320	*ret = retval;
321
322	return data;
323	}
324
325	void brcmf_sdio_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
326	u8 data, int *ret)
327	{
328	int retval;
329
330	brcmf_dbg(INFO, "addr:0x%08x, data:0x%02x\n", addr, data);
331	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true);
332
333	if (ret)
334	*ret = retval;
335	}
336
337	void brcmf_sdio_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
338	u32 data, int *ret)
339	{
340	int retval;
341
342	brcmf_dbg(INFO, "addr:0x%08x, data:0x%08x\n", addr, data);
343	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true);
344
345	if (ret)
346	*ret = retval;
347	}
348
abb7fbb4	349	u32 brcmf_sdcard_reg_read(struct brcmf_sdio_dev *sdiodev, u32 addr)
5b435de0 AS	350	{
	351	int status;
	352	u32 word = 0;
	353	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	354
	355	brcmf_dbg(INFO, "fun = 1, addr = 0x%x\n", addr);
	356
	357	if (bar0 != sdiodev->sbwad) {
	358	if (brcmf_sdcard_set_sbaddr_window(sdiodev, bar0))
	359	return 0xFFFFFFFF;
	360
	361	sdiodev->sbwad = bar0;
	362	}
	363
	364	addr &= SBSDIO_SB_OFT_ADDR_MASK;
abb7fbb4	365	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
5b435de0 AS	366
5b435de0 AS	367	status = brcmf_sdioh_request_word(sdiodev, SDIOH_READ, SDIO_FUNC_1,
abb7fbb4	368	addr, &word, 4);
5b435de0 AS	369
	370	sdiodev->regfail = (status != 0);
	371
5b435de0	372	if (status == 0) {
abb7fbb4 FL	373	brcmf_dbg(INFO, "data = 0x%x\n", word);
	374	return word;
	375	} else {
	376	brcmf_dbg(ERROR, "failed %d at addr 0x%04x\n", status, addr);
	377	return 0xFFFFFFFF;
5b435de0	378	}
5b435de0 AS	379	}
5b435de0 AS	380
ce454e88	381	u32 brcmf_sdcard_reg_write(struct brcmf_sdio_dev *sdiodev, u32 addr, u32 data)
5b435de0 AS	382	{
	383	int status;
	384	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	385	int err = 0;
	386
ce454e88 FL	387	brcmf_dbg(INFO, "fun = 1, addr = 0x%x, uint32data = 0x%x\n",
ce454e88 FL	388	addr, data);
5b435de0 AS	389
	390	if (bar0 != sdiodev->sbwad) {
	391	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
	392	if (err)
	393	return err;
	394
	395	sdiodev->sbwad = bar0;
	396	}
	397
	398	addr &= SBSDIO_SB_OFT_ADDR_MASK;
ce454e88	399	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
5b435de0 AS	400	status =
5b435de0 AS	401	brcmf_sdioh_request_word(sdiodev, SDIOH_WRITE, SDIO_FUNC_1,
ce454e88	402	addr, &data, 4);
5b435de0 AS	403	sdiodev->regfail = (status != 0);
	404
	405	if (status == 0)
	406	return 0;
	407
ce454e88 FL	408	brcmf_dbg(ERROR, "error writing 0x%08x to addr 0x%04x\n",
ce454e88 FL	409	data, addr);
5b435de0 AS	410	return 0xFFFFFFFF;
	411	}
	412
	413	bool brcmf_sdcard_regfail(struct brcmf_sdio_dev *sdiodev)
	414	{
	415	return sdiodev->regfail;
	416	}
	417
5adfeb63 AS	418	static int brcmf_sdcard_recv_prepare(struct brcmf_sdio_dev *sdiodev, uint fn,
5adfeb63 AS	419	uint flags, uint width, u32 *addr)
5b435de0	420	{
5adfeb63	421	uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
5b435de0 AS	422	int err = 0;
5b435de0 AS	423
5b435de0 AS	424	/* Async not implemented yet */
	425	if (flags & SDIO_REQ_ASYNC)
	426	return -ENOTSUPP;
	427
	428	if (bar0 != sdiodev->sbwad) {
	429	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
	430	if (err)
	431	return err;
	432
	433	sdiodev->sbwad = bar0;
	434	}
	435
5adfeb63 AS	436	*addr &= SBSDIO_SB_OFT_ADDR_MASK;
	437
	438	if (width == 4)
	439	*addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	440
	441	return 0;
	442	}
	443
	444	int
	445	brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	446	uint flags, u8 *buf, uint nbytes)
	447	{
	448	struct sk_buff *mypkt;
	449	int err;
	450
	451	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	452	if (!mypkt) {
	453	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	454	nbytes);
	455	return -EIO;
	456	}
	457
	458	err = brcmf_sdcard_recv_pkt(sdiodev, addr, fn, flags, mypkt);
	459	if (!err)
	460	memcpy(buf, mypkt->data, nbytes);
	461
	462	brcmu_pkt_buf_free_skb(mypkt);
	463	return err;
	464	}
	465
	466	int
	467	brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	468	uint flags, struct sk_buff *pkt)
	469	{
	470	uint incr_fix;
	471	uint width;
	472	int err = 0;
	473
	474	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
	475	fn, addr, pkt->len);
	476
	477	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	478	err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
	479	if (err)
	480	return err;
5b435de0 AS	481
5b435de0 AS	482	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
5adfeb63	483	err = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_READ,
4c6e869d	484	fn, addr, pkt);
5adfeb63 AS	485
	486	return err;
	487	}
	488
	489	int brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	490	uint flags, struct sk_buff_head *pktq)
	491	{
	492	uint incr_fix;
	493	uint width;
	494	int err = 0;
	495
	496	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
	497	fn, addr, pktq->qlen);
	498
5b435de0	499	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
5adfeb63 AS	500	err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
	501	if (err)
	502	return err;
5b435de0	503
5adfeb63 AS	504	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	505	err = brcmf_sdioh_request_chain(sdiodev, incr_fix, SDIOH_READ, fn, addr,
	506	pktq);
5b435de0	507
5adfeb63	508	return err;
5b435de0 AS	509	}
	510
	511	int
	512	brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
5adfeb63 AS	513	uint flags, u8 *buf, uint nbytes)
	514	{
	515	struct sk_buff *mypkt;
	516	int err;
	517
	518	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	519	if (!mypkt) {
	520	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	521	nbytes);
	522	return -EIO;
	523	}
	524
	525	memcpy(mypkt->data, buf, nbytes);
	526	err = brcmf_sdcard_send_pkt(sdiodev, addr, fn, flags, mypkt);
	527
	528	brcmu_pkt_buf_free_skb(mypkt);
	529	return err;
	530
	531	}
	532
	533	int
	534	brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	535	uint flags, struct sk_buff *pkt)
5b435de0 AS	536	{
	537	uint incr_fix;
	538	uint width;
	539	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	540	int err = 0;
	541
5adfeb63 AS	542	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
5adfeb63 AS	543	fn, addr, pkt->len);
5b435de0 AS	544
	545	/* Async not implemented yet */
	546	if (flags & SDIO_REQ_ASYNC)
	547	return -ENOTSUPP;
	548
	549	if (bar0 != sdiodev->sbwad) {
	550	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
	551	if (err)
	552	return err;
	553
	554	sdiodev->sbwad = bar0;
	555	}
	556
	557	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	558
	559	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	560	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	561	if (width == 4)
	562	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	563
	564	return brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_WRITE, fn,
4c6e869d	565	addr, pkt);
5b435de0 AS	566	}
	567
	568	int brcmf_sdcard_rwdata(struct brcmf_sdio_dev *sdiodev, uint rw, u32 addr,
	569	u8 *buf, uint nbytes)
	570	{
4c6e869d AS	571	struct sk_buff *mypkt;
	572	bool write = rw ? SDIOH_WRITE : SDIOH_READ;
	573	int err;
	574
5b435de0 AS	575	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	576	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	577
4c6e869d AS	578	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	579	if (!mypkt) {
	580	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	581	nbytes);
	582	return -EIO;
	583	}
	584
	585	/* For a write, copy the buffer data into the packet. */
	586	if (write)
	587	memcpy(mypkt->data, buf, nbytes);
	588
	589	err = brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_INC, write,
	590	SDIO_FUNC_1, addr, mypkt);
	591
	592	/* For a read, copy the packet data back to the buffer. */
	593	if (!err && !write)
	594	memcpy(buf, mypkt->data, nbytes);
	595
	596	brcmu_pkt_buf_free_skb(mypkt);
	597	return err;
5b435de0 AS	598	}
	599
	600	int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
	601	{
	602	char t_func = (char)fn;
	603	brcmf_dbg(TRACE, "Enter\n");
	604
	605	/* issue abort cmd52 command through F0 */
	606	brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0,
	607	SDIO_CCCR_ABORT, &t_func);
	608
	609	brcmf_dbg(TRACE, "Exit\n");
	610	return 0;
	611	}
	612
	613	int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
	614	{
	615	u32 regs = 0;
	616	int ret = 0;
	617
	618	ret = brcmf_sdioh_attach(sdiodev);
	619	if (ret)
	620	goto out;
	621
	622	regs = SI_ENUM_BASE;
	623
	624	/* Report the BAR, to fix if needed */
	625	sdiodev->sbwad = SI_ENUM_BASE;
	626
	627	/* try to attach to the target device */
4175b88b	628	sdiodev->bus = brcmf_sdbrcm_probe(regs, sdiodev);
5b435de0 AS	629	if (!sdiodev->bus) {
	630	brcmf_dbg(ERROR, "device attach failed\n");
	631	ret = -ENODEV;
	632	goto out;
	633	}
	634
	635	out:
	636	if (ret)
	637	brcmf_sdio_remove(sdiodev);
	638
	639	return ret;
	640	}
	641	EXPORT_SYMBOL(brcmf_sdio_probe);
	642
	643	int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev)
	644	{
	645	if (sdiodev->bus) {
	646	brcmf_sdbrcm_disconnect(sdiodev->bus);
	647	sdiodev->bus = NULL;
	648	}
	649
	650	brcmf_sdioh_detach(sdiodev);
	651
	652	sdiodev->sbwad = 0;
	653
	654	return 0;
	655	}
	656	EXPORT_SYMBOL(brcmf_sdio_remove);
	657
	658	void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable)
	659	{
	660	if (enable)
	661	brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
	662	else
	663	brcmf_sdbrcm_wd_timer(sdiodev->bus, 0);
	664	}