[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 **************************/

#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_bus *bus_if = dev_get_drvdata(dev_id);
	struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;

	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(SDIO, "Entering: irq %d\n", sdiodev->irq);

	ret = request_irq(sdiodev->irq, brcmf_sdio_irqhandler,
			  sdiodev->irq_flags, "brcmf_oob_intr",
			  &sdiodev->func[1]->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(SDIO, "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]->dev);
	sdiodev->irq_en = false;

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

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

	/* try to attach to the target device */
	sdiodev->bus = brcmf_sdbrcm_probe(regs, sdiodev);
	if (!sdiodev->bus) {
		brcmf_err("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)
{
	sdiodev->bus_if->state = BRCMF_BUS_DOWN;

	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
	18	#include <linux/types.h>
	19	#include <linux/netdevice.h>
ee40fa06	20	#include <linux/export.h>
5b435de0 AS	21	#include <linux/pci.h>
	22	#include <linux/pci_ids.h>
	23	#include <linux/sched.h>
	24	#include <linux/completion.h>
	25	#include <linux/mmc/sdio.h>
	26	#include <linux/mmc/sdio_func.h>
	27	#include <linux/mmc/card.h>
	28
	29	#include <defs.h>
	30	#include <brcm_hw_ids.h>
	31	#include <brcmu_utils.h>
	32	#include <brcmu_wifi.h>
	33	#include <soc.h>
5b435de0 AS	34	#include "dhd_bus.h"
	35	#include "dhd_dbg.h"
	36	#include "sdio_host.h"
	37
	38	#define SDIOH_API_ACCESS_RETRY_LIMIT 2
	39
ba89bf19 FL	40	#ifdef CONFIG_BRCMFMAC_SDIO_OOB
	41	static irqreturn_t brcmf_sdio_irqhandler(int irq, void *dev_id)
	42	{
5b3c1832 HM	43	struct brcmf_bus *bus_if = dev_get_drvdata(dev_id);
5b3c1832 HM	44	struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
ba89bf19 FL	45
	46	brcmf_dbg(INTR, "oob intr triggered\n");
	47
	48	/*
	49	* out-of-band interrupt is level-triggered which won't
	50	* be cleared until dpc
	51	*/
	52	if (sdiodev->irq_en) {
	53	disable_irq_nosync(irq);
	54	sdiodev->irq_en = false;
	55	}
	56
	57	brcmf_sdbrcm_isr(sdiodev->bus);
	58
	59	return IRQ_HANDLED;
	60	}
	61
	62	int brcmf_sdio_intr_register(struct brcmf_sdio_dev *sdiodev)
	63	{
	64	int ret = 0;
	65	u8 data;
	66	unsigned long flags;
	67
c3203374	68	brcmf_dbg(SDIO, "Entering: irq %d\n", sdiodev->irq);
ba89bf19	69
ba89bf19 FL	70	ret = request_irq(sdiodev->irq, brcmf_sdio_irqhandler,
ba89bf19 FL	71	sdiodev->irq_flags, "brcmf_oob_intr",
5b3c1832	72	&sdiodev->func[1]->dev);
ba89bf19 FL	73	if (ret != 0)
	74	return ret;
	75	spin_lock_init(&sdiodev->irq_en_lock);
	76	spin_lock_irqsave(&sdiodev->irq_en_lock, flags);
	77	sdiodev->irq_en = true;
	78	spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags);
	79
	80	ret = enable_irq_wake(sdiodev->irq);
	81	if (ret != 0)
	82	return ret;
	83	sdiodev->irq_wake = true;
	84
38b0b0dd FL	85	sdio_claim_host(sdiodev->func[1]);
38b0b0dd FL	86
ba89bf19	87	/* must configure SDIO_CCCR_IENx to enable irq */
45db339c	88	data = brcmf_sdio_regrb(sdiodev, SDIO_CCCR_IENx, &ret);
ba89bf19	89	data \|= 1 << SDIO_FUNC_1 \| 1 << SDIO_FUNC_2 \| 1;
3bba829f	90	brcmf_sdio_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret);
ba89bf19	91
f304a993	92	/* redirect, configure and enable io for interrupt signal */
ba89bf19	93	data = SDIO_SEPINT_MASK \| SDIO_SEPINT_OE;
f304a993	94	if (sdiodev->irq_flags & IRQF_TRIGGER_HIGH)
ba89bf19	95	data \|= SDIO_SEPINT_ACT_HI;
3bba829f	96	brcmf_sdio_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret);
ba89bf19	97
38b0b0dd FL	98	sdio_release_host(sdiodev->func[1]);
38b0b0dd FL	99
ba89bf19 FL	100	return 0;
	101	}
	102
	103	int brcmf_sdio_intr_unregister(struct brcmf_sdio_dev *sdiodev)
	104	{
c3203374	105	brcmf_dbg(SDIO, "Entering\n");
ba89bf19	106
38b0b0dd	107	sdio_claim_host(sdiodev->func[1]);
3bba829f FL	108	brcmf_sdio_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
3bba829f FL	109	brcmf_sdio_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
38b0b0dd	110	sdio_release_host(sdiodev->func[1]);
ba89bf19 FL	111
	112	if (sdiodev->irq_wake) {
	113	disable_irq_wake(sdiodev->irq);
	114	sdiodev->irq_wake = false;
	115	}
5b3c1832	116	free_irq(sdiodev->irq, &sdiodev->func[1]->dev);
ba89bf19 FL	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	{
5b3c1832 HM	124	struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev);
5b3c1832 HM	125	struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
5b435de0	126
ba89bf19	127	brcmf_dbg(INTR, "ib intr triggered\n");
5b435de0	128
5b435de0	129	brcmf_sdbrcm_isr(sdiodev->bus);
5b435de0 AS	130	}
5b435de0 AS	131
fbf59108	132	/* dummy handler for SDIO function 2 interrupt */
ba89bf19	133	static void brcmf_sdio_dummy_irqhandler(struct sdio_func *func)
fbf59108 FL	134	{
	135	}
	136
ba89bf19	137	int brcmf_sdio_intr_register(struct brcmf_sdio_dev *sdiodev)
5b435de0	138	{
c3203374	139	brcmf_dbg(SDIO, "Entering\n");
5b435de0 AS	140
5b435de0 AS	141	sdio_claim_host(sdiodev->func[1]);
ba89bf19 FL	142	sdio_claim_irq(sdiodev->func[1], brcmf_sdio_irqhandler);
ba89bf19 FL	143	sdio_claim_irq(sdiodev->func[2], brcmf_sdio_dummy_irqhandler);
5b435de0 AS	144	sdio_release_host(sdiodev->func[1]);
	145
	146	return 0;
	147	}
	148
ba89bf19	149	int brcmf_sdio_intr_unregister(struct brcmf_sdio_dev *sdiodev)
5b435de0	150	{
c3203374	151	brcmf_dbg(SDIO, "Entering\n");
5b435de0 AS	152
5b435de0 AS	153	sdio_claim_host(sdiodev->func[1]);
fbf59108	154	sdio_release_irq(sdiodev->func[2]);
5b435de0 AS	155	sdio_release_irq(sdiodev->func[1]);
	156	sdio_release_host(sdiodev->func[1]);
	157
	158	return 0;
	159	}
ba89bf19	160	#endif /* CONFIG_BRCMFMAC_SDIO_OOB */
5b435de0	161
5b435de0 AS	162	int
	163	brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
	164	{
7d9cfc28 FL	165	int err = 0, i;
	166	u8 addr[3];
	167	s32 retry;
	168
	169	addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
	170	addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK;
	171	addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK;
	172
	173	for (i = 0; i < 3; i++) {
	174	retry = 0;
	175	do {
	176	if (retry)
	177	usleep_range(1000, 2000);
	178	err = brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE,
	179	SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW + i,
	180	&addr[i]);
	181	} while (err != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
	182
	183	if (err) {
5e8149f5	184	brcmf_err("failed at addr:0x%0x\n",
7d9cfc28 FL	185	SBSDIO_FUNC1_SBADDRLOW + i);
	186	break;
	187	}
	188	}
5b435de0 AS	189
	190	return err;
	191	}
	192
4531603a	193	int
e9b8d91d FL	194	brcmf_sdio_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
	195	void *data, bool write)
	196	{
	197	u8 func_num, reg_size;
	198	u32 bar;
	199	s32 retry = 0;
	200	int ret;
	201
	202	/*
	203	* figure out how to read the register based on address range
d8b3fc59	204	* 0x00 ~ 0x7FF: function 0 CCCR and FBR
e9b8d91d FL	205	* 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
	206	* The rest: function 1 silicon backplane core registers
	207	*/
d8b3fc59	208	if ((addr & ~REG_F0_REG_MASK) == 0) {
e9b8d91d FL	209	func_num = SDIO_FUNC_0;
	210	reg_size = 1;
	211	} else if ((addr & ~REG_F1_MISC_MASK) == 0) {
	212	func_num = SDIO_FUNC_1;
	213	reg_size = 1;
	214	} else {
	215	func_num = SDIO_FUNC_1;
	216	reg_size = 4;
	217
	218	/* Set the window for SB core register */
	219	bar = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	220	if (bar != sdiodev->sbwad) {
	221	ret = brcmf_sdcard_set_sbaddr_window(sdiodev, bar);
	222	if (ret != 0) {
	223	memset(data, 0xFF, reg_size);
	224	return ret;
	225	}
	226	sdiodev->sbwad = bar;
	227	}
	228	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	229	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	230	}
	231
	232	do {
	233	if (!write)
	234	memset(data, 0, reg_size);
	235	if (retry) /* wait for 1 ms till bus get settled down */
	236	usleep_range(1000, 2000);
	237	if (reg_size == 1)
	238	ret = brcmf_sdioh_request_byte(sdiodev, write,
	239	func_num, addr, data);
	240	else
	241	ret = brcmf_sdioh_request_word(sdiodev, write,
	242	func_num, addr, data, 4);
	243	} while (ret != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
	244
5c15c23a	245	if (ret != 0)
5e8149f5	246	brcmf_err("failed with %d\n", ret);
e9b8d91d FL	247
	248	return ret;
	249	}
	250
	251	u8 brcmf_sdio_regrb(struct brcmf_sdio_dev sdiodev, u32 addr, int ret)
	252	{
	253	u8 data;
	254	int retval;
	255
c3203374	256	brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
e9b8d91d	257	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false);
c3203374	258	brcmf_dbg(SDIO, "data:0x%02x\n", data);
e9b8d91d FL	259
	260	if (ret)
	261	*ret = retval;
	262
	263	return data;
	264	}
	265
	266	u32 brcmf_sdio_regrl(struct brcmf_sdio_dev sdiodev, u32 addr, int ret)
	267	{
	268	u32 data;
	269	int retval;
	270
c3203374	271	brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
e9b8d91d	272	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false);
c3203374	273	brcmf_dbg(SDIO, "data:0x%08x\n", data);
e9b8d91d FL	274
	275	if (ret)
	276	*ret = retval;
	277
	278	return data;
	279	}
	280
	281	void brcmf_sdio_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
	282	u8 data, int *ret)
	283	{
	284	int retval;
	285
c3203374	286	brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data);
e9b8d91d FL	287	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true);
	288
	289	if (ret)
	290	*ret = retval;
	291	}
	292
	293	void brcmf_sdio_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
	294	u32 data, int *ret)
	295	{
	296	int retval;
	297
c3203374	298	brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data);
e9b8d91d FL	299	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true);
	300
	301	if (ret)
	302	*ret = retval;
	303	}
	304
5adfeb63 AS	305	static int brcmf_sdcard_recv_prepare(struct brcmf_sdio_dev *sdiodev, uint fn,
5adfeb63 AS	306	uint flags, uint width, u32 *addr)
5b435de0	307	{
5adfeb63	308	uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
5b435de0 AS	309	int err = 0;
5b435de0 AS	310
5b435de0 AS	311	/* Async not implemented yet */
	312	if (flags & SDIO_REQ_ASYNC)
	313	return -ENOTSUPP;
	314
	315	if (bar0 != sdiodev->sbwad) {
	316	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
	317	if (err)
	318	return err;
	319
	320	sdiodev->sbwad = bar0;
	321	}
	322
5adfeb63 AS	323	*addr &= SBSDIO_SB_OFT_ADDR_MASK;
	324
	325	if (width == 4)
	326	*addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	327
	328	return 0;
	329	}
	330
	331	int
	332	brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	333	uint flags, u8 *buf, uint nbytes)
	334	{
	335	struct sk_buff *mypkt;
	336	int err;
	337
	338	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	339	if (!mypkt) {
5e8149f5	340	brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
5adfeb63 AS	341	nbytes);
	342	return -EIO;
	343	}
	344
	345	err = brcmf_sdcard_recv_pkt(sdiodev, addr, fn, flags, mypkt);
	346	if (!err)
	347	memcpy(buf, mypkt->data, nbytes);
	348
	349	brcmu_pkt_buf_free_skb(mypkt);
	350	return err;
	351	}
	352
	353	int
	354	brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	355	uint flags, struct sk_buff *pkt)
	356	{
	357	uint incr_fix;
	358	uint width;
	359	int err = 0;
	360
c3203374	361	brcmf_dbg(SDIO, "fun = %d, addr = 0x%x, size = %d\n",
5adfeb63 AS	362	fn, addr, pkt->len);
	363
	364	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	365	err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
	366	if (err)
7057fd00	367	goto done;
5b435de0 AS	368
5b435de0 AS	369	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
5adfeb63	370	err = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_READ,
4c6e869d	371	fn, addr, pkt);
5adfeb63	372
7057fd00	373	done:
5adfeb63 AS	374	return err;
	375	}
	376
	377	int brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	378	uint flags, struct sk_buff_head *pktq)
	379	{
	380	uint incr_fix;
	381	uint width;
	382	int err = 0;
	383
c3203374	384	brcmf_dbg(SDIO, "fun = %d, addr = 0x%x, size = %d\n",
5adfeb63 AS	385	fn, addr, pktq->qlen);
5adfeb63 AS	386
5b435de0	387	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
5adfeb63 AS	388	err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
5adfeb63 AS	389	if (err)
7057fd00	390	goto done;
5b435de0	391
5adfeb63 AS	392	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	393	err = brcmf_sdioh_request_chain(sdiodev, incr_fix, SDIOH_READ, fn, addr,
	394	pktq);
5b435de0	395
7057fd00	396	done:
5adfeb63	397	return err;
5b435de0 AS	398	}
	399
	400	int
	401	brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
5adfeb63 AS	402	uint flags, u8 *buf, uint nbytes)
	403	{
	404	struct sk_buff *mypkt;
	405	int err;
	406
	407	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	408	if (!mypkt) {
5e8149f5	409	brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
5adfeb63 AS	410	nbytes);
	411	return -EIO;
	412	}
	413
	414	memcpy(mypkt->data, buf, nbytes);
	415	err = brcmf_sdcard_send_pkt(sdiodev, addr, fn, flags, mypkt);
	416
	417	brcmu_pkt_buf_free_skb(mypkt);
	418	return err;
	419
	420	}
	421
	422	int
	423	brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	424	uint flags, struct sk_buff *pkt)
5b435de0 AS	425	{
	426	uint incr_fix;
	427	uint width;
	428	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	429	int err = 0;
	430
c3203374	431	brcmf_dbg(SDIO, "fun = %d, addr = 0x%x, size = %d\n",
5adfeb63	432	fn, addr, pkt->len);
5b435de0 AS	433
	434	/* Async not implemented yet */
	435	if (flags & SDIO_REQ_ASYNC)
	436	return -ENOTSUPP;
	437
	438	if (bar0 != sdiodev->sbwad) {
	439	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
	440	if (err)
7057fd00	441	goto done;
5b435de0 AS	442
	443	sdiodev->sbwad = bar0;
	444	}
	445
	446	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	447
	448	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	449	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	450	if (width == 4)
	451	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	452
7057fd00 FL	453	err = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_WRITE, fn,
	454	addr, pkt);
	455
	456	done:
7057fd00	457	return err;
5b435de0 AS	458	}
	459
	460	int brcmf_sdcard_rwdata(struct brcmf_sdio_dev *sdiodev, uint rw, u32 addr,
	461	u8 *buf, uint nbytes)
	462	{
4c6e869d AS	463	struct sk_buff *mypkt;
	464	bool write = rw ? SDIOH_WRITE : SDIOH_READ;
	465	int err;
	466
5b435de0 AS	467	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	468	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	469
4c6e869d AS	470	mypkt = brcmu_pkt_buf_get_skb(nbytes);
4c6e869d AS	471	if (!mypkt) {
5e8149f5	472	brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
4c6e869d AS	473	nbytes);
	474	return -EIO;
	475	}
	476
	477	/* For a write, copy the buffer data into the packet. */
	478	if (write)
	479	memcpy(mypkt->data, buf, nbytes);
	480
	481	err = brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_INC, write,
	482	SDIO_FUNC_1, addr, mypkt);
	483
	484	/* For a read, copy the packet data back to the buffer. */
	485	if (!err && !write)
	486	memcpy(buf, mypkt->data, nbytes);
	487
	488	brcmu_pkt_buf_free_skb(mypkt);
	489	return err;
5b435de0 AS	490	}
	491
	492	int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
	493	{
	494	char t_func = (char)fn;
c3203374	495	brcmf_dbg(SDIO, "Enter\n");
5b435de0 AS	496
	497	/* issue abort cmd52 command through F0 */
	498	brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0,
	499	SDIO_CCCR_ABORT, &t_func);
	500
c3203374	501	brcmf_dbg(SDIO, "Exit\n");
5b435de0 AS	502	return 0;
	503	}
	504
	505	int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
	506	{
	507	u32 regs = 0;
	508	int ret = 0;
	509
	510	ret = brcmf_sdioh_attach(sdiodev);
	511	if (ret)
	512	goto out;
	513
	514	regs = SI_ENUM_BASE;
	515
5b435de0	516	/* try to attach to the target device */
4175b88b	517	sdiodev->bus = brcmf_sdbrcm_probe(regs, sdiodev);
5b435de0	518	if (!sdiodev->bus) {
5e8149f5	519	brcmf_err("device attach failed\n");
5b435de0 AS	520	ret = -ENODEV;
	521	goto out;
	522	}
	523
	524	out:
	525	if (ret)
	526	brcmf_sdio_remove(sdiodev);
	527
	528	return ret;
	529	}
	530	EXPORT_SYMBOL(brcmf_sdio_probe);
	531
	532	int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev)
	533	{
2def5c10 HM	534	sdiodev->bus_if->state = BRCMF_BUS_DOWN;
2def5c10 HM	535
5b435de0 AS	536	if (sdiodev->bus) {
	537	brcmf_sdbrcm_disconnect(sdiodev->bus);
	538	sdiodev->bus = NULL;
	539	}
	540
	541	brcmf_sdioh_detach(sdiodev);
	542
	543	sdiodev->sbwad = 0;
	544
	545	return 0;
	546	}
	547	EXPORT_SYMBOL(brcmf_sdio_remove);
	548
	549	void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable)
	550	{
	551	if (enable)
	552	brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
	553	else
	554	brcmf_sdbrcm_wd_timer(sdiodev->bus, 0);
	555	}