[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;

	/* 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);

	return 0;
}

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

	brcmf_sdio_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
	brcmf_sdio_regwb(sdiodev, 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 */

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 ~ 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);
	sdio_claim_host(sdiodev->func[1]);
	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false);
	sdio_release_host(sdiodev->func[1]);
	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);
	sdio_claim_host(sdiodev->func[1]);
	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false);
	sdio_release_host(sdiodev->func[1]);
	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);
	sdio_claim_host(sdiodev->func[1]);
	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true);
	sdio_release_host(sdiodev->func[1]);

	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);
	sdio_claim_host(sdiodev->func[1]);
	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true);
	sdio_release_host(sdiodev->func[1]);

	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);

	sdio_claim_host(sdiodev->func[1]);

	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:
	sdio_release_host(sdiodev->func[1]);

	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);

	sdio_claim_host(sdiodev->func[1]);

	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:
	sdio_release_host(sdiodev->func[1]);

	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;

	sdio_claim_host(sdiodev->func[1]);

	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:
	sdio_release_host(sdiodev->func[1]);

	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 */
	sdio_claim_host(sdiodev->func[1]);
	brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0,
				 SDIO_CCCR_ABORT, &t_func);
	sdio_release_host(sdiodev->func[1]);

	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 */
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 FL	97
	98	return 0;
	99	}
	100
	101	int brcmf_sdio_intr_unregister(struct brcmf_sdio_dev *sdiodev)
	102	{
	103	brcmf_dbg(TRACE, "Entering\n");
	104
3bba829f FL	105	brcmf_sdio_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
3bba829f FL	106	brcmf_sdio_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
ba89bf19 FL	107
	108	if (sdiodev->irq_wake) {
	109	disable_irq_wake(sdiodev->irq);
	110	sdiodev->irq_wake = false;
	111	}
	112	free_irq(sdiodev->irq, &sdiodev->func[1]->card->dev);
	113	sdiodev->irq_en = false;
	114
	115	return 0;
	116	}
	117	#else /* CONFIG_BRCMFMAC_SDIO_OOB */
	118	static void brcmf_sdio_irqhandler(struct sdio_func *func)
5b435de0	119	{
d76d1c8c	120	struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
5b435de0	121
ba89bf19	122	brcmf_dbg(INTR, "ib intr triggered\n");
5b435de0	123
5b435de0	124	brcmf_sdbrcm_isr(sdiodev->bus);
5b435de0 AS	125	}
5b435de0 AS	126
fbf59108	127	/* dummy handler for SDIO function 2 interrupt */
ba89bf19	128	static void brcmf_sdio_dummy_irqhandler(struct sdio_func *func)
fbf59108 FL	129	{
	130	}
	131
ba89bf19	132	int brcmf_sdio_intr_register(struct brcmf_sdio_dev *sdiodev)
5b435de0 AS	133	{
	134	brcmf_dbg(TRACE, "Entering\n");
	135
	136	sdio_claim_host(sdiodev->func[1]);
ba89bf19 FL	137	sdio_claim_irq(sdiodev->func[1], brcmf_sdio_irqhandler);
ba89bf19 FL	138	sdio_claim_irq(sdiodev->func[2], brcmf_sdio_dummy_irqhandler);
5b435de0 AS	139	sdio_release_host(sdiodev->func[1]);
	140
	141	return 0;
	142	}
	143
ba89bf19	144	int brcmf_sdio_intr_unregister(struct brcmf_sdio_dev *sdiodev)
5b435de0 AS	145	{
	146	brcmf_dbg(TRACE, "Entering\n");
	147
	148	sdio_claim_host(sdiodev->func[1]);
fbf59108	149	sdio_release_irq(sdiodev->func[2]);
5b435de0 AS	150	sdio_release_irq(sdiodev->func[1]);
	151	sdio_release_host(sdiodev->func[1]);
	152
	153	return 0;
	154	}
ba89bf19	155	#endif /* CONFIG_BRCMFMAC_SDIO_OOB */
5b435de0	156
5b435de0 AS	157	int
	158	brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
	159	{
7d9cfc28 FL	160	int err = 0, i;
	161	u8 addr[3];
	162	s32 retry;
	163
	164	addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
	165	addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK;
	166	addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK;
	167
	168	for (i = 0; i < 3; i++) {
	169	retry = 0;
	170	do {
	171	if (retry)
	172	usleep_range(1000, 2000);
	173	err = brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE,
	174	SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW + i,
	175	&addr[i]);
	176	} while (err != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
	177
	178	if (err) {
	179	brcmf_dbg(ERROR, "failed at addr:0x%0x\n",
	180	SBSDIO_FUNC1_SBADDRLOW + i);
	181	break;
	182	}
	183	}
5b435de0 AS	184
	185	return err;
	186	}
	187
e9b8d91d FL	188	static int
	189	brcmf_sdio_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
	190	void *data, bool write)
	191	{
	192	u8 func_num, reg_size;
	193	u32 bar;
	194	s32 retry = 0;
	195	int ret;
	196
	197	/*
	198	* figure out how to read the register based on address range
d8b3fc59	199	* 0x00 ~ 0x7FF: function 0 CCCR and FBR
e9b8d91d FL	200	* 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
	201	* The rest: function 1 silicon backplane core registers
	202	*/
d8b3fc59	203	if ((addr & ~REG_F0_REG_MASK) == 0) {
e9b8d91d FL	204	func_num = SDIO_FUNC_0;
	205	reg_size = 1;
	206	} else if ((addr & ~REG_F1_MISC_MASK) == 0) {
	207	func_num = SDIO_FUNC_1;
	208	reg_size = 1;
	209	} else {
	210	func_num = SDIO_FUNC_1;
	211	reg_size = 4;
	212
	213	/* Set the window for SB core register */
	214	bar = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	215	if (bar != sdiodev->sbwad) {
	216	ret = brcmf_sdcard_set_sbaddr_window(sdiodev, bar);
	217	if (ret != 0) {
	218	memset(data, 0xFF, reg_size);
	219	return ret;
	220	}
	221	sdiodev->sbwad = bar;
	222	}
	223	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	224	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	225	}
	226
	227	do {
	228	if (!write)
	229	memset(data, 0, reg_size);
	230	if (retry) /* wait for 1 ms till bus get settled down */
	231	usleep_range(1000, 2000);
	232	if (reg_size == 1)
	233	ret = brcmf_sdioh_request_byte(sdiodev, write,
	234	func_num, addr, data);
	235	else
	236	ret = brcmf_sdioh_request_word(sdiodev, write,
	237	func_num, addr, data, 4);
	238	} while (ret != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
	239
5c15c23a	240	if (ret != 0)
e9b8d91d FL	241	brcmf_dbg(ERROR, "failed with %d\n", ret);
	242
	243	return ret;
	244	}
	245
	246	u8 brcmf_sdio_regrb(struct brcmf_sdio_dev sdiodev, u32 addr, int ret)
	247	{
	248	u8 data;
	249	int retval;
	250
	251	brcmf_dbg(INFO, "addr:0x%08x\n", addr);
7057fd00	252	sdio_claim_host(sdiodev->func[1]);
e9b8d91d	253	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false);
7057fd00	254	sdio_release_host(sdiodev->func[1]);
e9b8d91d FL	255	brcmf_dbg(INFO, "data:0x%02x\n", data);
	256
	257	if (ret)
	258	*ret = retval;
	259
	260	return data;
	261	}
	262
	263	u32 brcmf_sdio_regrl(struct brcmf_sdio_dev sdiodev, u32 addr, int ret)
	264	{
	265	u32 data;
	266	int retval;
	267
	268	brcmf_dbg(INFO, "addr:0x%08x\n", addr);
7057fd00	269	sdio_claim_host(sdiodev->func[1]);
e9b8d91d	270	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false);
7057fd00	271	sdio_release_host(sdiodev->func[1]);
e9b8d91d FL	272	brcmf_dbg(INFO, "data:0x%08x\n", data);
	273
	274	if (ret)
	275	*ret = retval;
	276
	277	return data;
	278	}
	279
	280	void brcmf_sdio_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
	281	u8 data, int *ret)
	282	{
	283	int retval;
	284
	285	brcmf_dbg(INFO, "addr:0x%08x, data:0x%02x\n", addr, data);
7057fd00	286	sdio_claim_host(sdiodev->func[1]);
e9b8d91d	287	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true);
7057fd00	288	sdio_release_host(sdiodev->func[1]);
e9b8d91d FL	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);
7057fd00	300	sdio_claim_host(sdiodev->func[1]);
e9b8d91d	301	retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true);
7057fd00	302	sdio_release_host(sdiodev->func[1]);
e9b8d91d FL	303
	304	if (ret)
	305	*ret = retval;
	306	}
	307
5adfeb63 AS	308	static int brcmf_sdcard_recv_prepare(struct brcmf_sdio_dev *sdiodev, uint fn,
5adfeb63 AS	309	uint flags, uint width, u32 *addr)
5b435de0	310	{
5adfeb63	311	uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
5b435de0 AS	312	int err = 0;
5b435de0 AS	313
5b435de0 AS	314	/* Async not implemented yet */
	315	if (flags & SDIO_REQ_ASYNC)
	316	return -ENOTSUPP;
	317
	318	if (bar0 != sdiodev->sbwad) {
	319	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
	320	if (err)
	321	return err;
	322
	323	sdiodev->sbwad = bar0;
	324	}
	325
5adfeb63 AS	326	*addr &= SBSDIO_SB_OFT_ADDR_MASK;
	327
	328	if (width == 4)
	329	*addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	330
	331	return 0;
	332	}
	333
	334	int
	335	brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	336	uint flags, u8 *buf, uint nbytes)
	337	{
	338	struct sk_buff *mypkt;
	339	int err;
	340
	341	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	342	if (!mypkt) {
	343	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	344	nbytes);
	345	return -EIO;
	346	}
	347
	348	err = brcmf_sdcard_recv_pkt(sdiodev, addr, fn, flags, mypkt);
	349	if (!err)
	350	memcpy(buf, mypkt->data, nbytes);
	351
	352	brcmu_pkt_buf_free_skb(mypkt);
	353	return err;
	354	}
	355
	356	int
	357	brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	358	uint flags, struct sk_buff *pkt)
	359	{
	360	uint incr_fix;
	361	uint width;
	362	int err = 0;
	363
	364	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
	365	fn, addr, pkt->len);
	366
7057fd00 FL	367	sdio_claim_host(sdiodev->func[1]);
7057fd00 FL	368
5adfeb63 AS	369	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	370	err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
	371	if (err)
7057fd00	372	goto done;
5b435de0 AS	373
5b435de0 AS	374	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
5adfeb63	375	err = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_READ,
4c6e869d	376	fn, addr, pkt);
5adfeb63	377
7057fd00 FL	378	done:
	379	sdio_release_host(sdiodev->func[1]);
	380
5adfeb63 AS	381	return err;
	382	}
	383
	384	int brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	385	uint flags, struct sk_buff_head *pktq)
	386	{
	387	uint incr_fix;
	388	uint width;
	389	int err = 0;
	390
	391	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
	392	fn, addr, pktq->qlen);
	393
7057fd00 FL	394	sdio_claim_host(sdiodev->func[1]);
7057fd00 FL	395
5b435de0	396	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
5adfeb63 AS	397	err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
5adfeb63 AS	398	if (err)
7057fd00	399	goto done;
5b435de0	400
5adfeb63 AS	401	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	402	err = brcmf_sdioh_request_chain(sdiodev, incr_fix, SDIOH_READ, fn, addr,
	403	pktq);
5b435de0	404
7057fd00 FL	405	done:
	406	sdio_release_host(sdiodev->func[1]);
	407
5adfeb63	408	return err;
5b435de0 AS	409	}
	410
	411	int
	412	brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
5adfeb63 AS	413	uint flags, u8 *buf, uint nbytes)
	414	{
	415	struct sk_buff *mypkt;
	416	int err;
	417
	418	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	419	if (!mypkt) {
	420	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	421	nbytes);
	422	return -EIO;
	423	}
	424
	425	memcpy(mypkt->data, buf, nbytes);
	426	err = brcmf_sdcard_send_pkt(sdiodev, addr, fn, flags, mypkt);
	427
	428	brcmu_pkt_buf_free_skb(mypkt);
	429	return err;
	430
	431	}
	432
	433	int
	434	brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	435	uint flags, struct sk_buff *pkt)
5b435de0 AS	436	{
	437	uint incr_fix;
	438	uint width;
	439	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	440	int err = 0;
	441
5adfeb63 AS	442	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
5adfeb63 AS	443	fn, addr, pkt->len);
5b435de0 AS	444
	445	/* Async not implemented yet */
	446	if (flags & SDIO_REQ_ASYNC)
	447	return -ENOTSUPP;
	448
7057fd00 FL	449	sdio_claim_host(sdiodev->func[1]);
7057fd00 FL	450
5b435de0 AS	451	if (bar0 != sdiodev->sbwad) {
	452	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
	453	if (err)
7057fd00	454	goto done;
5b435de0 AS	455
	456	sdiodev->sbwad = bar0;
	457	}
	458
	459	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	460
	461	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	462	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	463	if (width == 4)
	464	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	465
7057fd00 FL	466	err = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_WRITE, fn,
	467	addr, pkt);
	468
	469	done:
	470	sdio_release_host(sdiodev->func[1]);
	471
	472	return err;
5b435de0 AS	473	}
	474
	475	int brcmf_sdcard_rwdata(struct brcmf_sdio_dev *sdiodev, uint rw, u32 addr,
	476	u8 *buf, uint nbytes)
	477	{
4c6e869d AS	478	struct sk_buff *mypkt;
	479	bool write = rw ? SDIOH_WRITE : SDIOH_READ;
	480	int err;
	481
5b435de0 AS	482	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	483	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	484
4c6e869d AS	485	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	486	if (!mypkt) {
	487	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	488	nbytes);
	489	return -EIO;
	490	}
	491
	492	/* For a write, copy the buffer data into the packet. */
	493	if (write)
	494	memcpy(mypkt->data, buf, nbytes);
	495
	496	err = brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_INC, write,
	497	SDIO_FUNC_1, addr, mypkt);
	498
	499	/* For a read, copy the packet data back to the buffer. */
	500	if (!err && !write)
	501	memcpy(buf, mypkt->data, nbytes);
	502
	503	brcmu_pkt_buf_free_skb(mypkt);
	504	return err;
5b435de0 AS	505	}
	506
	507	int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
	508	{
	509	char t_func = (char)fn;
	510	brcmf_dbg(TRACE, "Enter\n");
	511
	512	/* issue abort cmd52 command through F0 */
7057fd00	513	sdio_claim_host(sdiodev->func[1]);
5b435de0 AS	514	brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0,
5b435de0 AS	515	SDIO_CCCR_ABORT, &t_func);
7057fd00	516	sdio_release_host(sdiodev->func[1]);
5b435de0 AS	517
	518	brcmf_dbg(TRACE, "Exit\n");
	519	return 0;
	520	}
	521
	522	int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
	523	{
	524	u32 regs = 0;
	525	int ret = 0;
	526
	527	ret = brcmf_sdioh_attach(sdiodev);
	528	if (ret)
	529	goto out;
	530
	531	regs = SI_ENUM_BASE;
	532
	533	/* Report the BAR, to fix if needed */
	534	sdiodev->sbwad = SI_ENUM_BASE;
	535
	536	/* try to attach to the target device */
4175b88b	537	sdiodev->bus = brcmf_sdbrcm_probe(regs, sdiodev);
5b435de0 AS	538	if (!sdiodev->bus) {
	539	brcmf_dbg(ERROR, "device attach failed\n");
	540	ret = -ENODEV;
	541	goto out;
	542	}
	543
	544	out:
	545	if (ret)
	546	brcmf_sdio_remove(sdiodev);
	547
	548	return ret;
	549	}
	550	EXPORT_SYMBOL(brcmf_sdio_probe);
	551
	552	int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev)
	553	{
	554	if (sdiodev->bus) {
	555	brcmf_sdbrcm_disconnect(sdiodev->bus);
	556	sdiodev->bus = NULL;
	557	}
	558
	559	brcmf_sdioh_detach(sdiodev);
	560
	561	sdiodev->sbwad = 0;
	562
	563	return 0;
	564	}
	565	EXPORT_SYMBOL(brcmf_sdio_remove);
	566
	567	void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable)
	568	{
	569	if (enable)
	570	brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
	571	else
	572	brcmf_sdbrcm_wd_timer(sdiodev->bus, 0);
	573	}