[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

static void brcmf_sdioh_irqhandler(struct sdio_func *func)
{
	struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);

	brcmf_dbg(TRACE, "***IRQHandler\n");

	sdio_release_host(func);

	brcmf_sdbrcm_isr(sdiodev->bus);

	sdio_claim_host(func);
}

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

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

	sdio_claim_host(sdiodev->func[1]);
	sdio_claim_irq(sdiodev->func[1], brcmf_sdioh_irqhandler);
	sdio_claim_irq(sdiodev->func[2], brcmf_sdioh_dummy_irq_handler);
	sdio_release_host(sdiodev->func[1]);

	return 0;
}

int brcmf_sdcard_intr_dereg(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;
}

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, uint size)
{
	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;
	if (size == 4)
		addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;

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

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

	brcmf_dbg(INFO, "u32data = 0x%x\n", word);

	/* if ok, return appropriately masked word */
	if (status == 0) {
		switch (size) {
		case sizeof(u8):
			return word & 0xff;
		case sizeof(u16):
			return word & 0xffff;
		case sizeof(u32):
			return word;
		default:
			sdiodev->regfail = true;

		}
	}

	/* otherwise, bad sdio access or invalid size */
	brcmf_dbg(ERROR, "error reading addr 0x%04x size %d\n", addr, size);
	return 0xFFFFFFFF;
}

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

	brcmf_dbg(INFO, "fun = 1, addr = 0x%x, uint%ddata = 0x%x\n",
		  addr, size * 8, 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;
	if (size == 4)
		addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
	status =
	    brcmf_sdioh_request_word(sdiodev, SDIOH_WRITE, SDIO_FUNC_1,
				     addr, &data, size);
	sdiodev->regfail = (status != 0);

	if (status == 0)
		return 0;

	brcmf_dbg(ERROR, "error writing 0x%08x to addr 0x%04x size %d\n",
		  data, addr, size);
	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
	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
	40	static void brcmf_sdioh_irqhandler(struct sdio_func *func)
	41	{
d76d1c8c	42	struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
5b435de0 AS	43
	44	brcmf_dbg(TRACE, "***IRQHandler\n");
	45
	46	sdio_release_host(func);
	47
	48	brcmf_sdbrcm_isr(sdiodev->bus);
	49
	50	sdio_claim_host(func);
	51	}
	52
fbf59108 FL	53	/* dummy handler for SDIO function 2 interrupt */
	54	static void brcmf_sdioh_dummy_irq_handler(struct sdio_func *func)
	55	{
	56	}
	57
5b435de0 AS	58	int brcmf_sdcard_intr_reg(struct brcmf_sdio_dev *sdiodev)
	59	{
	60	brcmf_dbg(TRACE, "Entering\n");
	61
	62	sdio_claim_host(sdiodev->func[1]);
	63	sdio_claim_irq(sdiodev->func[1], brcmf_sdioh_irqhandler);
fbf59108	64	sdio_claim_irq(sdiodev->func[2], brcmf_sdioh_dummy_irq_handler);
5b435de0 AS	65	sdio_release_host(sdiodev->func[1]);
	66
	67	return 0;
	68	}
	69
	70	int brcmf_sdcard_intr_dereg(struct brcmf_sdio_dev *sdiodev)
	71	{
	72	brcmf_dbg(TRACE, "Entering\n");
	73
	74	sdio_claim_host(sdiodev->func[1]);
fbf59108	75	sdio_release_irq(sdiodev->func[2]);
5b435de0 AS	76	sdio_release_irq(sdiodev->func[1]);
	77	sdio_release_host(sdiodev->func[1]);
	78
	79	return 0;
	80	}
	81
	82	u8 brcmf_sdcard_cfg_read(struct brcmf_sdio_dev *sdiodev, uint fnc_num, u32 addr,
	83	int *err)
	84	{
	85	int status;
	86	s32 retry = 0;
	87	u8 data = 0;
	88
	89	do {
	90	if (retry) /* wait for 1 ms till bus get settled down */
	91	udelay(1000);
	92	status = brcmf_sdioh_request_byte(sdiodev, SDIOH_READ, fnc_num,
	93	addr, (u8 *) &data);
	94	} while (status != 0
	95	&& (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
	96	if (err)
	97	*err = status;
	98
	99	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, u8data = 0x%x\n",
	100	fnc_num, addr, data);
	101
	102	return data;
	103	}
	104
	105	void
	106	brcmf_sdcard_cfg_write(struct brcmf_sdio_dev *sdiodev, uint fnc_num, u32 addr,
	107	u8 data, int *err)
	108	{
	109	int status;
	110	s32 retry = 0;
	111
	112	do {
	113	if (retry) /* wait for 1 ms till bus get settled down */
	114	udelay(1000);
	115	status = brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, fnc_num,
	116	addr, (u8 *) &data);
	117	} while (status != 0
	118	&& (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
	119	if (err)
	120	*err = status;
	121
	122	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, u8data = 0x%x\n",
	123	fnc_num, addr, data);
	124	}
	125
	126	int
	127	brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
	128	{
	129	int err = 0;
	130	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW,
	131	(address >> 8) & SBSDIO_SBADDRLOW_MASK, &err);
	132	if (!err)
	133	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1,
	134	SBSDIO_FUNC1_SBADDRMID,
	135	(address >> 16) & SBSDIO_SBADDRMID_MASK,
	136	&err);
	137	if (!err)
	138	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1,
	139	SBSDIO_FUNC1_SBADDRHIGH,
140	(address >> 24) & SBSDIO_SBADDRHIGH_MASK,
141	&err);
142
143	return err;
144	}
145
146	u32 brcmf_sdcard_reg_read(struct brcmf_sdio_dev *sdiodev, u32 addr, uint size)
147	{
148	int status;
149	u32 word = 0;
150	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
151
152	brcmf_dbg(INFO, "fun = 1, addr = 0x%x\n", addr);
153
154	if (bar0 != sdiodev->sbwad) {
155	if (brcmf_sdcard_set_sbaddr_window(sdiodev, bar0))
156	return 0xFFFFFFFF;
157
158	sdiodev->sbwad = bar0;
159	}
160
161	addr &= SBSDIO_SB_OFT_ADDR_MASK;
162	if (size == 4)
163	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
164
165	status = brcmf_sdioh_request_word(sdiodev, SDIOH_READ, SDIO_FUNC_1,
166	addr, &word, size);
167
168	sdiodev->regfail = (status != 0);
169
170	brcmf_dbg(INFO, "u32data = 0x%x\n", word);
171
172	/* if ok, return appropriately masked word */
173	if (status == 0) {
174	switch (size) {
175	case sizeof(u8):
176	return word & 0xff;
177	case sizeof(u16):
178	return word & 0xffff;
179	case sizeof(u32):
180	return word;
181	default:
182	sdiodev->regfail = true;
183
184	}
185	}
186
187	/* otherwise, bad sdio access or invalid size */
188	brcmf_dbg(ERROR, "error reading addr 0x%04x size %d\n", addr, size);
189	return 0xFFFFFFFF;
190	}
191
192	u32 brcmf_sdcard_reg_write(struct brcmf_sdio_dev *sdiodev, u32 addr, uint size,
193	u32 data)
194	{
195	int status;
196	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
197	int err = 0;
198
199	brcmf_dbg(INFO, "fun = 1, addr = 0x%x, uint%ddata = 0x%x\n",
200	addr, size * 8, data);
201
202	if (bar0 != sdiodev->sbwad) {
203	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
204	if (err)
205	return err;
206
207	sdiodev->sbwad = bar0;
208	}
209
210	addr &= SBSDIO_SB_OFT_ADDR_MASK;
211	if (size == 4)
212	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
213	status =
214	brcmf_sdioh_request_word(sdiodev, SDIOH_WRITE, SDIO_FUNC_1,
215	addr, &data, size);
216	sdiodev->regfail = (status != 0);
217
218	if (status == 0)
219	return 0;
220
221	brcmf_dbg(ERROR, "error writing 0x%08x to addr 0x%04x size %d\n",
222	data, addr, size);
223	return 0xFFFFFFFF;
224	}
225
226	bool brcmf_sdcard_regfail(struct brcmf_sdio_dev *sdiodev)
227	{
228	return sdiodev->regfail;
229	}
230
5adfeb63 AS	231	static int brcmf_sdcard_recv_prepare(struct brcmf_sdio_dev *sdiodev, uint fn,
5adfeb63 AS	232	uint flags, uint width, u32 *addr)
5b435de0	233	{
5adfeb63	234	uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
5b435de0 AS	235	int err = 0;
5b435de0 AS	236
5b435de0 AS	237	/* Async not implemented yet */
	238	if (flags & SDIO_REQ_ASYNC)
	239	return -ENOTSUPP;
	240
	241	if (bar0 != sdiodev->sbwad) {
	242	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
	243	if (err)
	244	return err;
	245
	246	sdiodev->sbwad = bar0;
	247	}
	248
5adfeb63 AS	249	*addr &= SBSDIO_SB_OFT_ADDR_MASK;
	250
	251	if (width == 4)
	252	*addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	253
	254	return 0;
	255	}
	256
	257	int
	258	brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	259	uint flags, u8 *buf, uint nbytes)
	260	{
	261	struct sk_buff *mypkt;
	262	int err;
	263
	264	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	265	if (!mypkt) {
	266	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	267	nbytes);
	268	return -EIO;
	269	}
	270
	271	err = brcmf_sdcard_recv_pkt(sdiodev, addr, fn, flags, mypkt);
	272	if (!err)
	273	memcpy(buf, mypkt->data, nbytes);
	274
	275	brcmu_pkt_buf_free_skb(mypkt);
	276	return err;
	277	}
	278
	279	int
	280	brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	281	uint flags, struct sk_buff *pkt)
	282	{
	283	uint incr_fix;
	284	uint width;
	285	int err = 0;
	286
	287	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
	288	fn, addr, pkt->len);
	289
	290	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	291	err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
	292	if (err)
	293	return err;
5b435de0 AS	294
5b435de0 AS	295	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
5adfeb63	296	err = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_READ,
4c6e869d	297	fn, addr, pkt);
5adfeb63 AS	298
	299	return err;
	300	}
	301
	302	int brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	303	uint flags, struct sk_buff_head *pktq)
	304	{
	305	uint incr_fix;
	306	uint width;
	307	int err = 0;
	308
	309	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
	310	fn, addr, pktq->qlen);
	311
5b435de0	312	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
5adfeb63 AS	313	err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
	314	if (err)
	315	return err;
5b435de0	316
5adfeb63 AS	317	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	318	err = brcmf_sdioh_request_chain(sdiodev, incr_fix, SDIOH_READ, fn, addr,
	319	pktq);
5b435de0	320
5adfeb63	321	return err;
5b435de0 AS	322	}
	323
	324	int
	325	brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
5adfeb63 AS	326	uint flags, u8 *buf, uint nbytes)
	327	{
	328	struct sk_buff *mypkt;
	329	int err;
	330
	331	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	332	if (!mypkt) {
	333	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	334	nbytes);
	335	return -EIO;
	336	}
	337
	338	memcpy(mypkt->data, buf, nbytes);
	339	err = brcmf_sdcard_send_pkt(sdiodev, addr, fn, flags, mypkt);
	340
	341	brcmu_pkt_buf_free_skb(mypkt);
	342	return err;
	343
	344	}
	345
	346	int
	347	brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	348	uint flags, struct sk_buff *pkt)
5b435de0 AS	349	{
	350	uint incr_fix;
	351	uint width;
	352	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	353	int err = 0;
	354
5adfeb63 AS	355	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
5adfeb63 AS	356	fn, addr, pkt->len);
5b435de0 AS	357
	358	/* Async not implemented yet */
	359	if (flags & SDIO_REQ_ASYNC)
	360	return -ENOTSUPP;
	361
	362	if (bar0 != sdiodev->sbwad) {
	363	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
	364	if (err)
	365	return err;
	366
	367	sdiodev->sbwad = bar0;
	368	}
	369
	370	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	371
	372	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	373	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	374	if (width == 4)
	375	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	376
	377	return brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_WRITE, fn,
4c6e869d	378	addr, pkt);
5b435de0 AS	379	}
	380
	381	int brcmf_sdcard_rwdata(struct brcmf_sdio_dev *sdiodev, uint rw, u32 addr,
	382	u8 *buf, uint nbytes)
	383	{
4c6e869d AS	384	struct sk_buff *mypkt;
	385	bool write = rw ? SDIOH_WRITE : SDIOH_READ;
	386	int err;
	387
5b435de0 AS	388	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	389	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	390
4c6e869d AS	391	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	392	if (!mypkt) {
	393	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	394	nbytes);
	395	return -EIO;
	396	}
	397
	398	/* For a write, copy the buffer data into the packet. */
	399	if (write)
	400	memcpy(mypkt->data, buf, nbytes);
	401
	402	err = brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_INC, write,
	403	SDIO_FUNC_1, addr, mypkt);
	404
	405	/* For a read, copy the packet data back to the buffer. */
	406	if (!err && !write)
	407	memcpy(buf, mypkt->data, nbytes);
	408
	409	brcmu_pkt_buf_free_skb(mypkt);
	410	return err;
5b435de0 AS	411	}
	412
	413	int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
	414	{
	415	char t_func = (char)fn;
	416	brcmf_dbg(TRACE, "Enter\n");
	417
	418	/* issue abort cmd52 command through F0 */
	419	brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0,
	420	SDIO_CCCR_ABORT, &t_func);
	421
	422	brcmf_dbg(TRACE, "Exit\n");
	423	return 0;
	424	}
	425
	426	int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
	427	{
	428	u32 regs = 0;
	429	int ret = 0;
	430
	431	ret = brcmf_sdioh_attach(sdiodev);
	432	if (ret)
	433	goto out;
	434
	435	regs = SI_ENUM_BASE;
	436
	437	/* Report the BAR, to fix if needed */
	438	sdiodev->sbwad = SI_ENUM_BASE;
	439
	440	/* try to attach to the target device */
4175b88b	441	sdiodev->bus = brcmf_sdbrcm_probe(regs, sdiodev);
5b435de0 AS	442	if (!sdiodev->bus) {
	443	brcmf_dbg(ERROR, "device attach failed\n");
	444	ret = -ENODEV;
	445	goto out;
	446	}
	447
	448	out:
	449	if (ret)
	450	brcmf_sdio_remove(sdiodev);
	451
	452	return ret;
	453	}
	454	EXPORT_SYMBOL(brcmf_sdio_probe);
	455
	456	int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev)
	457	{
	458	if (sdiodev->bus) {
	459	brcmf_sdbrcm_disconnect(sdiodev->bus);
	460	sdiodev->bus = NULL;
	461	}
	462
	463	brcmf_sdioh_detach(sdiodev);
	464
	465	sdiodev->sbwad = 0;
	466
	467	return 0;
	468	}
	469	EXPORT_SYMBOL(brcmf_sdio_remove);
	470
	471	void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable)
	472	{
	473	if (enable)
	474	brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
	475	else
	476	brcmf_sdbrcm_wd_timer(sdiodev->bus, 0);
	477	}