[mirror_ubuntu-artful-kernel.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;

	sdio_claim_host(sdiodev->func[1]);

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

	/* redirect, configure and 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_sdio_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret);

	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]);
	brcmf_sdio_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
	brcmf_sdio_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
	sdio_release_host(sdiodev->func[1]);

	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 */

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;
}

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 ~ 0x7FF: function 0 CCCR and FBR
	 * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
	 * The rest: function 1 silicon backplane core registers
	 */
	if ((addr & ~REG_F0_REG_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);

	if (ret != 0)
		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;
}

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)
		goto done;

	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);

done:
	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)
		goto done;

	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);

done:
	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)
			goto done;

		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;

	err = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_WRITE, fn,
					 addr, pkt);

done:
	return err;
}

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
38b0b0dd FL	87	sdio_claim_host(sdiodev->func[1]);
38b0b0dd FL	88
ba89bf19	89	/* must configure SDIO_CCCR_IENx to enable irq */
45db339c	90	data = brcmf_sdio_regrb(sdiodev, SDIO_CCCR_IENx, &ret);
ba89bf19	91	data \|= 1 << SDIO_FUNC_1 \| 1 << SDIO_FUNC_2 \| 1;
3bba829f	92	brcmf_sdio_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret);
ba89bf19	93
f304a993	94	/* redirect, configure and enable io for interrupt signal */
ba89bf19	95	data = SDIO_SEPINT_MASK \| SDIO_SEPINT_OE;
f304a993	96	if (sdiodev->irq_flags & IRQF_TRIGGER_HIGH)
ba89bf19	97	data \|= SDIO_SEPINT_ACT_HI;
3bba829f	98	brcmf_sdio_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret);
ba89bf19	99
38b0b0dd FL	100	sdio_release_host(sdiodev->func[1]);
38b0b0dd FL	101
ba89bf19 FL	102	return 0;
	103	}
	104
	105	int brcmf_sdio_intr_unregister(struct brcmf_sdio_dev *sdiodev)
	106	{
	107	brcmf_dbg(TRACE, "Entering\n");
	108
38b0b0dd	109	sdio_claim_host(sdiodev->func[1]);
3bba829f FL	110	brcmf_sdio_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
3bba829f FL	111	brcmf_sdio_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
38b0b0dd	112	sdio_release_host(sdiodev->func[1]);
ba89bf19 FL	113
	114	if (sdiodev->irq_wake) {
	115	disable_irq_wake(sdiodev->irq);
	116	sdiodev->irq_wake = false;
	117	}
	118	free_irq(sdiodev->irq, &sdiodev->func[1]->card->dev);
	119	sdiodev->irq_en = false;
	120
	121	return 0;
	122	}
	123	#else /* CONFIG_BRCMFMAC_SDIO_OOB */
	124	static void brcmf_sdio_irqhandler(struct sdio_func *func)
5b435de0	125	{
d76d1c8c	126	struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
5b435de0	127
ba89bf19	128	brcmf_dbg(INTR, "ib intr triggered\n");
5b435de0	129
5b435de0	130	brcmf_sdbrcm_isr(sdiodev->bus);
5b435de0 AS	131	}
5b435de0 AS	132
fbf59108	133	/* dummy handler for SDIO function 2 interrupt */
ba89bf19	134	static void brcmf_sdio_dummy_irqhandler(struct sdio_func *func)
fbf59108 FL	135	{
	136	}
	137
ba89bf19	138	int brcmf_sdio_intr_register(struct brcmf_sdio_dev *sdiodev)
5b435de0 AS	139	{
	140	brcmf_dbg(TRACE, "Entering\n");
	141
	142	sdio_claim_host(sdiodev->func[1]);
ba89bf19 FL	143	sdio_claim_irq(sdiodev->func[1], brcmf_sdio_irqhandler);
ba89bf19 FL	144	sdio_claim_irq(sdiodev->func[2], brcmf_sdio_dummy_irqhandler);
5b435de0 AS	145	sdio_release_host(sdiodev->func[1]);
	146
	147	return 0;
	148	}
	149
ba89bf19	150	int brcmf_sdio_intr_unregister(struct brcmf_sdio_dev *sdiodev)
5b435de0 AS	151	{
	152	brcmf_dbg(TRACE, "Entering\n");
	153
	154	sdio_claim_host(sdiodev->func[1]);
fbf59108	155	sdio_release_irq(sdiodev->func[2]);
5b435de0 AS	156	sdio_release_irq(sdiodev->func[1]);
	157	sdio_release_host(sdiodev->func[1]);
	158
	159	return 0;
	160	}
ba89bf19	161	#endif /* CONFIG_BRCMFMAC_SDIO_OOB */
5b435de0	162
5b435de0 AS	163	int
	164	brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
	165	{
7d9cfc28 FL	166	int err = 0, i;
	167	u8 addr[3];
	168	s32 retry;
	169
	170	addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
	171	addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK;
	172	addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK;
	173
	174	for (i = 0; i < 3; i++) {
	175	retry = 0;
	176	do {
	177	if (retry)
	178	usleep_range(1000, 2000);
	179	err = brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE,
	180	SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW + i,
	181	&addr[i]);
	182	} while (err != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
	183
	184	if (err) {
	185	brcmf_dbg(ERROR, "failed at addr:0x%0x\n",
	186	SBSDIO_FUNC1_SBADDRLOW + i);
	187	break;
	188	}
	189	}
5b435de0 AS	190
	191	return err;
	192	}
	193
4531603a	194	int
e9b8d91d FL	195	brcmf_sdio_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
	196	void *data, bool write)
	197	{
	198	u8 func_num, reg_size;
	199	u32 bar;
	200	s32 retry = 0;
	201	int ret;
	202
	203	/*
	204	* figure out how to read the register based on address range
d8b3fc59	205	* 0x00 ~ 0x7FF: function 0 CCCR and FBR
e9b8d91d FL	206	* 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
	207	* The rest: function 1 silicon backplane core registers
	208	*/
d8b3fc59	209	if ((addr & ~REG_F0_REG_MASK) == 0) {
e9b8d91d FL	210	func_num = SDIO_FUNC_0;
	211	reg_size = 1;
	212	} else if ((addr & ~REG_F1_MISC_MASK) == 0) {
	213	func_num = SDIO_FUNC_1;
	214	reg_size = 1;
	215	} else {
	216	func_num = SDIO_FUNC_1;
	217	reg_size = 4;
	218
	219	/* Set the window for SB core register */
	220	bar = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	221	if (bar != sdiodev->sbwad) {
	222	ret = brcmf_sdcard_set_sbaddr_window(sdiodev, bar);
	223	if (ret != 0) {
	224	memset(data, 0xFF, reg_size);
	225	return ret;
	226	}
	227	sdiodev->sbwad = bar;
	228	}
	229	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	230	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	231	}
	232
	233	do {
	234	if (!write)
	235	memset(data, 0, reg_size);
	236	if (retry) /* wait for 1 ms till bus get settled down */
	237	usleep_range(1000, 2000);
	238	if (reg_size == 1)
	239	ret = brcmf_sdioh_request_byte(sdiodev, write,
	240	func_num, addr, data);
	241	else
	242	ret = brcmf_sdioh_request_word(sdiodev, write,
	243	func_num, addr, data, 4);
	244	} while (ret != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
	245
5c15c23a	246	if (ret != 0)
e9b8d91d FL	247	brcmf_dbg(ERROR, "failed with %d\n", ret);
	248
	249	return ret;
	250	}
	251
	252	u8 brcmf_sdio_regrb(struct brcmf_sdio_dev sdiodev, u32 addr, int ret)
	253	{
	254	u8 data;
	255	int retval;
	256
	257	brcmf_dbg(INFO, "addr:0x%08x\n", addr);
	258	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false);
	259	brcmf_dbg(INFO, "data:0x%02x\n", data);
	260
	261	if (ret)
	262	*ret = retval;
	263
	264	return data;
	265	}
	266
	267	u32 brcmf_sdio_regrl(struct brcmf_sdio_dev sdiodev, u32 addr, int ret)
	268	{
	269	u32 data;
	270	int retval;
	271
	272	brcmf_dbg(INFO, "addr:0x%08x\n", addr);
	273	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false);
	274	brcmf_dbg(INFO, "data:0x%08x\n", data);
	275
	276	if (ret)
	277	*ret = retval;
	278
	279	return data;
	280	}
	281
	282	void brcmf_sdio_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
	283	u8 data, int *ret)
	284	{
	285	int retval;
	286
	287	brcmf_dbg(INFO, "addr:0x%08x, data:0x%02x\n", addr, data);
	288	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true);
	289
	290	if (ret)
	291	*ret = retval;
	292	}
	293
	294	void brcmf_sdio_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
	295	u32 data, int *ret)
	296	{
	297	int retval;
	298
	299	brcmf_dbg(INFO, "addr:0x%08x, data:0x%08x\n", addr, data);
	300	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true);
	301
	302	if (ret)
	303	*ret = retval;
	304	}
	305
5adfeb63 AS	306	static int brcmf_sdcard_recv_prepare(struct brcmf_sdio_dev *sdiodev, uint fn,
5adfeb63 AS	307	uint flags, uint width, u32 *addr)
5b435de0	308	{
5adfeb63	309	uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
5b435de0 AS	310	int err = 0;
5b435de0 AS	311
5b435de0 AS	312	/* Async not implemented yet */
	313	if (flags & SDIO_REQ_ASYNC)
	314	return -ENOTSUPP;
	315
	316	if (bar0 != sdiodev->sbwad) {
	317	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
	318	if (err)
	319	return err;
	320
	321	sdiodev->sbwad = bar0;
	322	}
	323
5adfeb63 AS	324	*addr &= SBSDIO_SB_OFT_ADDR_MASK;
	325
	326	if (width == 4)
	327	*addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	328
	329	return 0;
	330	}
	331
	332	int
	333	brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	334	uint flags, u8 *buf, uint nbytes)
	335	{
	336	struct sk_buff *mypkt;
	337	int err;
	338
	339	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	340	if (!mypkt) {
	341	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	342	nbytes);
	343	return -EIO;
	344	}
	345
	346	err = brcmf_sdcard_recv_pkt(sdiodev, addr, fn, flags, mypkt);
	347	if (!err)
	348	memcpy(buf, mypkt->data, nbytes);
	349
	350	brcmu_pkt_buf_free_skb(mypkt);
	351	return err;
	352	}
	353
	354	int
	355	brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	356	uint flags, struct sk_buff *pkt)
	357	{
	358	uint incr_fix;
	359	uint width;
	360	int err = 0;
	361
	362	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
	363	fn, addr, pkt->len);
	364
	365	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	366	err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
	367	if (err)
7057fd00	368	goto done;
5b435de0 AS	369
5b435de0 AS	370	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
5adfeb63	371	err = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_READ,
4c6e869d	372	fn, addr, pkt);
5adfeb63	373
7057fd00	374	done:
5adfeb63 AS	375	return err;
	376	}
	377
	378	int brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	379	uint flags, struct sk_buff_head *pktq)
	380	{
	381	uint incr_fix;
	382	uint width;
	383	int err = 0;
	384
	385	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
	386	fn, addr, pktq->qlen);
	387
5b435de0	388	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
5adfeb63 AS	389	err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
5adfeb63 AS	390	if (err)
7057fd00	391	goto done;
5b435de0	392
5adfeb63 AS	393	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	394	err = brcmf_sdioh_request_chain(sdiodev, incr_fix, SDIOH_READ, fn, addr,
	395	pktq);
5b435de0	396
7057fd00	397	done:
5adfeb63	398	return err;
5b435de0 AS	399	}
	400
	401	int
	402	brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
5adfeb63 AS	403	uint flags, u8 *buf, uint nbytes)
	404	{
	405	struct sk_buff *mypkt;
	406	int err;
	407
	408	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	409	if (!mypkt) {
	410	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	411	nbytes);
	412	return -EIO;
	413	}
	414
	415	memcpy(mypkt->data, buf, nbytes);
	416	err = brcmf_sdcard_send_pkt(sdiodev, addr, fn, flags, mypkt);
	417
	418	brcmu_pkt_buf_free_skb(mypkt);
	419	return err;
	420
	421	}
	422
	423	int
	424	brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	425	uint flags, struct sk_buff *pkt)
5b435de0 AS	426	{
	427	uint incr_fix;
	428	uint width;
	429	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	430	int err = 0;
	431
5adfeb63 AS	432	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
5adfeb63 AS	433	fn, addr, pkt->len);
5b435de0 AS	434
	435	/* Async not implemented yet */
	436	if (flags & SDIO_REQ_ASYNC)
	437	return -ENOTSUPP;
	438
	439	if (bar0 != sdiodev->sbwad) {
	440	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
	441	if (err)
7057fd00	442	goto done;
5b435de0 AS	443
	444	sdiodev->sbwad = bar0;
	445	}
	446
	447	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	448
	449	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	450	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	451	if (width == 4)
	452	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	453
7057fd00 FL	454	err = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_WRITE, fn,
	455	addr, pkt);
	456
	457	done:
7057fd00	458	return err;
5b435de0 AS	459	}
	460
	461	int brcmf_sdcard_rwdata(struct brcmf_sdio_dev *sdiodev, uint rw, u32 addr,
	462	u8 *buf, uint nbytes)
	463	{
4c6e869d AS	464	struct sk_buff *mypkt;
	465	bool write = rw ? SDIOH_WRITE : SDIOH_READ;
	466	int err;
	467
5b435de0 AS	468	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	469	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	470
4c6e869d AS	471	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	472	if (!mypkt) {
	473	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	474	nbytes);
	475	return -EIO;
	476	}
	477
	478	/* For a write, copy the buffer data into the packet. */
	479	if (write)
	480	memcpy(mypkt->data, buf, nbytes);
	481
	482	err = brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_INC, write,
	483	SDIO_FUNC_1, addr, mypkt);
	484
	485	/* For a read, copy the packet data back to the buffer. */
	486	if (!err && !write)
	487	memcpy(buf, mypkt->data, nbytes);
	488
	489	brcmu_pkt_buf_free_skb(mypkt);
	490	return err;
5b435de0 AS	491	}
	492
	493	int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
	494	{
	495	char t_func = (char)fn;
	496	brcmf_dbg(TRACE, "Enter\n");
	497
	498	/* issue abort cmd52 command through F0 */
	499	brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0,
	500	SDIO_CCCR_ABORT, &t_func);
	501
	502	brcmf_dbg(TRACE, "Exit\n");
	503	return 0;
	504	}
	505
	506	int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
	507	{
	508	u32 regs = 0;
	509	int ret = 0;
	510
	511	ret = brcmf_sdioh_attach(sdiodev);
	512	if (ret)
	513	goto out;
	514
	515	regs = SI_ENUM_BASE;
	516
	517	/* Report the BAR, to fix if needed */
	518	sdiodev->sbwad = SI_ENUM_BASE;
	519
	520	/* try to attach to the target device */
4175b88b	521	sdiodev->bus = brcmf_sdbrcm_probe(regs, sdiodev);
5b435de0 AS	522	if (!sdiodev->bus) {
	523	brcmf_dbg(ERROR, "device attach failed\n");
	524	ret = -ENODEV;
	525	goto out;
	526	}
	527
	528	out:
	529	if (ret)
	530	brcmf_sdio_remove(sdiodev);
	531
	532	return ret;
	533	}
	534	EXPORT_SYMBOL(brcmf_sdio_probe);
	535
	536	int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev)
	537	{
	538	if (sdiodev->bus) {
	539	brcmf_sdbrcm_disconnect(sdiodev->bus);
	540	sdiodev->bus = NULL;
	541	}
	542
	543	brcmf_sdioh_detach(sdiodev);
	544
	545	sdiodev->sbwad = 0;
	546
	547	return 0;
	548	}
	549	EXPORT_SYMBOL(brcmf_sdio_remove);
	550
	551	void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable)
	552	{
	553	if (enable)
	554	brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
	555	else
	556	brcmf_sdbrcm_wd_timer(sdiodev->bus, 0);
	557	}