[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_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;
	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW,
			 (address >> 8) & SBSDIO_SBADDRLOW_MASK, &err);
	if (!err)
		brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1,
				       SBSDIO_FUNC1_SBADDRMID,
				       (address >> 16) & SBSDIO_SBADDRMID_MASK,
				       &err);
	if (!err)
		brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1,
				       SBSDIO_FUNC1_SBADDRHIGH,
				       (address >> 24) & SBSDIO_SBADDRHIGH_MASK,
				       &err);

	return err;
}

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	{
	208	int err = 0;
	209	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW,
	210	(address >> 8) & SBSDIO_SBADDRLOW_MASK, &err);
	211	if (!err)
	212	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1,
	213	SBSDIO_FUNC1_SBADDRMID,
	214	(address >> 16) & SBSDIO_SBADDRMID_MASK,
	215	&err);
	216	if (!err)
	217	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1,
	218	SBSDIO_FUNC1_SBADDRHIGH,
	219	(address >> 24) & SBSDIO_SBADDRHIGH_MASK,
	220	&err);
	221
	222	return err;
	223	}
224
abb7fbb4	225	u32 brcmf_sdcard_reg_read(struct brcmf_sdio_dev *sdiodev, u32 addr)
5b435de0 AS	226	{
	227	int status;
	228	u32 word = 0;
	229	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	230
	231	brcmf_dbg(INFO, "fun = 1, addr = 0x%x\n", addr);
	232
	233	if (bar0 != sdiodev->sbwad) {
	234	if (brcmf_sdcard_set_sbaddr_window(sdiodev, bar0))
	235	return 0xFFFFFFFF;
	236
	237	sdiodev->sbwad = bar0;
	238	}
	239
	240	addr &= SBSDIO_SB_OFT_ADDR_MASK;
abb7fbb4	241	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
5b435de0 AS	242
5b435de0 AS	243	status = brcmf_sdioh_request_word(sdiodev, SDIOH_READ, SDIO_FUNC_1,
abb7fbb4	244	addr, &word, 4);
5b435de0 AS	245
	246	sdiodev->regfail = (status != 0);
	247
5b435de0	248	if (status == 0) {
abb7fbb4 FL	249	brcmf_dbg(INFO, "data = 0x%x\n", word);
	250	return word;
	251	} else {
	252	brcmf_dbg(ERROR, "failed %d at addr 0x%04x\n", status, addr);
	253	return 0xFFFFFFFF;
5b435de0	254	}
5b435de0 AS	255	}
5b435de0 AS	256
ce454e88	257	u32 brcmf_sdcard_reg_write(struct brcmf_sdio_dev *sdiodev, u32 addr, u32 data)
5b435de0 AS	258	{
	259	int status;
	260	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	261	int err = 0;
	262
ce454e88 FL	263	brcmf_dbg(INFO, "fun = 1, addr = 0x%x, uint32data = 0x%x\n",
ce454e88 FL	264	addr, data);
5b435de0 AS	265
	266	if (bar0 != sdiodev->sbwad) {
	267	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
	268	if (err)
	269	return err;
	270
	271	sdiodev->sbwad = bar0;
	272	}
	273
	274	addr &= SBSDIO_SB_OFT_ADDR_MASK;
ce454e88	275	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
5b435de0 AS	276	status =
5b435de0 AS	277	brcmf_sdioh_request_word(sdiodev, SDIOH_WRITE, SDIO_FUNC_1,
ce454e88	278	addr, &data, 4);
5b435de0 AS	279	sdiodev->regfail = (status != 0);
	280
	281	if (status == 0)
	282	return 0;
	283
ce454e88 FL	284	brcmf_dbg(ERROR, "error writing 0x%08x to addr 0x%04x\n",
ce454e88 FL	285	data, addr);
5b435de0 AS	286	return 0xFFFFFFFF;
	287	}
	288
	289	bool brcmf_sdcard_regfail(struct brcmf_sdio_dev *sdiodev)
	290	{
	291	return sdiodev->regfail;
	292	}
	293
5adfeb63 AS	294	static int brcmf_sdcard_recv_prepare(struct brcmf_sdio_dev *sdiodev, uint fn,
5adfeb63 AS	295	uint flags, uint width, u32 *addr)
5b435de0	296	{
5adfeb63	297	uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
5b435de0 AS	298	int err = 0;
5b435de0 AS	299
5b435de0 AS	300	/* Async not implemented yet */
	301	if (flags & SDIO_REQ_ASYNC)
	302	return -ENOTSUPP;
	303
	304	if (bar0 != sdiodev->sbwad) {
	305	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
	306	if (err)
	307	return err;
	308
	309	sdiodev->sbwad = bar0;
	310	}
	311
5adfeb63 AS	312	*addr &= SBSDIO_SB_OFT_ADDR_MASK;
	313
	314	if (width == 4)
	315	*addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	316
	317	return 0;
	318	}
	319
	320	int
	321	brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	322	uint flags, u8 *buf, uint nbytes)
	323	{
	324	struct sk_buff *mypkt;
	325	int err;
	326
	327	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	328	if (!mypkt) {
	329	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	330	nbytes);
	331	return -EIO;
	332	}
	333
	334	err = brcmf_sdcard_recv_pkt(sdiodev, addr, fn, flags, mypkt);
	335	if (!err)
	336	memcpy(buf, mypkt->data, nbytes);
	337
	338	brcmu_pkt_buf_free_skb(mypkt);
	339	return err;
	340	}
	341
	342	int
	343	brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	344	uint flags, struct sk_buff *pkt)
	345	{
	346	uint incr_fix;
	347	uint width;
	348	int err = 0;
	349
	350	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
	351	fn, addr, pkt->len);
	352
	353	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	354	err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
	355	if (err)
	356	return err;
5b435de0 AS	357
5b435de0 AS	358	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
5adfeb63	359	err = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_READ,
4c6e869d	360	fn, addr, pkt);
5adfeb63 AS	361
	362	return err;
	363	}
	364
	365	int brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	366	uint flags, struct sk_buff_head *pktq)
	367	{
	368	uint incr_fix;
	369	uint width;
	370	int err = 0;
	371
	372	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
	373	fn, addr, pktq->qlen);
	374
5b435de0	375	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
5adfeb63 AS	376	err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
	377	if (err)
	378	return err;
5b435de0	379
5adfeb63 AS	380	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	381	err = brcmf_sdioh_request_chain(sdiodev, incr_fix, SDIOH_READ, fn, addr,
	382	pktq);
5b435de0	383
5adfeb63	384	return err;
5b435de0 AS	385	}
	386
	387	int
	388	brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
5adfeb63 AS	389	uint flags, u8 *buf, uint nbytes)
	390	{
	391	struct sk_buff *mypkt;
	392	int err;
	393
	394	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	395	if (!mypkt) {
	396	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	397	nbytes);
	398	return -EIO;
	399	}
	400
	401	memcpy(mypkt->data, buf, nbytes);
	402	err = brcmf_sdcard_send_pkt(sdiodev, addr, fn, flags, mypkt);
	403
	404	brcmu_pkt_buf_free_skb(mypkt);
	405	return err;
	406
	407	}
	408
	409	int
	410	brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	411	uint flags, struct sk_buff *pkt)
5b435de0 AS	412	{
	413	uint incr_fix;
	414	uint width;
	415	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	416	int err = 0;
	417
5adfeb63 AS	418	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
5adfeb63 AS	419	fn, addr, pkt->len);
5b435de0 AS	420
	421	/* Async not implemented yet */
	422	if (flags & SDIO_REQ_ASYNC)
	423	return -ENOTSUPP;
	424
	425	if (bar0 != sdiodev->sbwad) {
	426	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
	427	if (err)
	428	return err;
	429
	430	sdiodev->sbwad = bar0;
	431	}
	432
	433	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	434
	435	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	436	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	437	if (width == 4)
	438	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	439
	440	return brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_WRITE, fn,
4c6e869d	441	addr, pkt);
5b435de0 AS	442	}
	443
	444	int brcmf_sdcard_rwdata(struct brcmf_sdio_dev *sdiodev, uint rw, u32 addr,
	445	u8 *buf, uint nbytes)
	446	{
4c6e869d AS	447	struct sk_buff *mypkt;
	448	bool write = rw ? SDIOH_WRITE : SDIOH_READ;
	449	int err;
	450
5b435de0 AS	451	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	452	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	453
4c6e869d AS	454	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	455	if (!mypkt) {
	456	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	457	nbytes);
	458	return -EIO;
	459	}
	460
	461	/* For a write, copy the buffer data into the packet. */
	462	if (write)
	463	memcpy(mypkt->data, buf, nbytes);
	464
	465	err = brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_INC, write,
	466	SDIO_FUNC_1, addr, mypkt);
	467
	468	/* For a read, copy the packet data back to the buffer. */
	469	if (!err && !write)
	470	memcpy(buf, mypkt->data, nbytes);
	471
	472	brcmu_pkt_buf_free_skb(mypkt);
	473	return err;
5b435de0 AS	474	}
	475
	476	int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
	477	{
	478	char t_func = (char)fn;
	479	brcmf_dbg(TRACE, "Enter\n");
	480
	481	/* issue abort cmd52 command through F0 */
	482	brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0,
	483	SDIO_CCCR_ABORT, &t_func);
	484
	485	brcmf_dbg(TRACE, "Exit\n");
	486	return 0;
	487	}
	488
	489	int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
	490	{
	491	u32 regs = 0;
	492	int ret = 0;
	493
	494	ret = brcmf_sdioh_attach(sdiodev);
	495	if (ret)
	496	goto out;
	497
	498	regs = SI_ENUM_BASE;
	499
	500	/* Report the BAR, to fix if needed */
	501	sdiodev->sbwad = SI_ENUM_BASE;
	502
	503	/* try to attach to the target device */
4175b88b	504	sdiodev->bus = brcmf_sdbrcm_probe(regs, sdiodev);
5b435de0 AS	505	if (!sdiodev->bus) {
	506	brcmf_dbg(ERROR, "device attach failed\n");
	507	ret = -ENODEV;
	508	goto out;
	509	}
	510
	511	out:
	512	if (ret)
	513	brcmf_sdio_remove(sdiodev);
	514
	515	return ret;
	516	}
	517	EXPORT_SYMBOL(brcmf_sdio_probe);
	518
	519	int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev)
	520	{
	521	if (sdiodev->bus) {
	522	brcmf_sdbrcm_disconnect(sdiodev->bus);
	523	sdiodev->bus = NULL;
	524	}
	525
	526	brcmf_sdioh_detach(sdiodev);
	527
	528	sdiodev->sbwad = 0;
	529
	530	return 0;
	531	}
	532	EXPORT_SYMBOL(brcmf_sdio_remove);
	533
	534	void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable)
	535	{
	536	if (enable)
	537	brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
	538	else
	539	brcmf_sdbrcm_wd_timer(sdiodev->bus, 0);
	540	}