[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.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_bus *bus_if = dev_get_drvdata(&func->card->dev);
	struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv;

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

	sdio_release_host(func);

	brcmf_sdbrcm_isr(sdiodev->bus);

	sdio_claim_host(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_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[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>
	34	#include "dhd.h"
	35	#include "dhd_bus.h"
	36	#include "dhd_dbg.h"
	37	#include "sdio_host.h"
	38
	39	#define SDIOH_API_ACCESS_RETRY_LIMIT 2
	40
	41	static void brcmf_sdioh_irqhandler(struct sdio_func *func)
	42	{
655713be FL	43	struct brcmf_bus *bus_if = dev_get_drvdata(&func->card->dev);
655713be FL	44	struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv;
5b435de0 AS	45
	46	brcmf_dbg(TRACE, "***IRQHandler\n");
	47
	48	sdio_release_host(func);
	49
	50	brcmf_sdbrcm_isr(sdiodev->bus);
	51
	52	sdio_claim_host(func);
	53	}
	54
	55	int brcmf_sdcard_intr_reg(struct brcmf_sdio_dev *sdiodev)
	56	{
	57	brcmf_dbg(TRACE, "Entering\n");
	58
	59	sdio_claim_host(sdiodev->func[1]);
	60	sdio_claim_irq(sdiodev->func[1], brcmf_sdioh_irqhandler);
	61	sdio_release_host(sdiodev->func[1]);
	62
	63	return 0;
	64	}
	65
	66	int brcmf_sdcard_intr_dereg(struct brcmf_sdio_dev *sdiodev)
	67	{
	68	brcmf_dbg(TRACE, "Entering\n");
	69
	70	sdio_claim_host(sdiodev->func[1]);
	71	sdio_release_irq(sdiodev->func[1]);
	72	sdio_release_host(sdiodev->func[1]);
	73
	74	return 0;
	75	}
	76
	77	u8 brcmf_sdcard_cfg_read(struct brcmf_sdio_dev *sdiodev, uint fnc_num, u32 addr,
	78	int *err)
	79	{
	80	int status;
	81	s32 retry = 0;
	82	u8 data = 0;
	83
	84	do {
	85	if (retry) /* wait for 1 ms till bus get settled down */
	86	udelay(1000);
	87	status = brcmf_sdioh_request_byte(sdiodev, SDIOH_READ, fnc_num,
	88	addr, (u8 *) &data);
	89	} while (status != 0
	90	&& (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
	91	if (err)
	92	*err = status;
	93
	94	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, u8data = 0x%x\n",
	95	fnc_num, addr, data);
	96
	97	return data;
	98	}
	99
	100	void
	101	brcmf_sdcard_cfg_write(struct brcmf_sdio_dev *sdiodev, uint fnc_num, u32 addr,
	102	u8 data, int *err)
	103	{
	104	int status;
	105	s32 retry = 0;
	106
	107	do {
	108	if (retry) /* wait for 1 ms till bus get settled down */
109	udelay(1000);
110	status = brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, fnc_num,
111	addr, (u8 *) &data);
112	} while (status != 0
113	&& (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
114	if (err)
115	*err = status;
116
117	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, u8data = 0x%x\n",
118	fnc_num, addr, data);
119	}
120
121	int
122	brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
123	{
124	int err = 0;
125	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW,
126	(address >> 8) & SBSDIO_SBADDRLOW_MASK, &err);
127	if (!err)
128	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1,
129	SBSDIO_FUNC1_SBADDRMID,
130	(address >> 16) & SBSDIO_SBADDRMID_MASK,
131	&err);
132	if (!err)
133	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1,
134	SBSDIO_FUNC1_SBADDRHIGH,
135	(address >> 24) & SBSDIO_SBADDRHIGH_MASK,
136	&err);
137
138	return err;
139	}
140
141	u32 brcmf_sdcard_reg_read(struct brcmf_sdio_dev *sdiodev, u32 addr, uint size)
142	{
143	int status;
144	u32 word = 0;
145	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
146
147	brcmf_dbg(INFO, "fun = 1, addr = 0x%x\n", addr);
148
149	if (bar0 != sdiodev->sbwad) {
150	if (brcmf_sdcard_set_sbaddr_window(sdiodev, bar0))
151	return 0xFFFFFFFF;
152
153	sdiodev->sbwad = bar0;
154	}
155
156	addr &= SBSDIO_SB_OFT_ADDR_MASK;
157	if (size == 4)
158	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
159
160	status = brcmf_sdioh_request_word(sdiodev, SDIOH_READ, SDIO_FUNC_1,
161	addr, &word, size);
162
163	sdiodev->regfail = (status != 0);
164
165	brcmf_dbg(INFO, "u32data = 0x%x\n", word);
166
167	/* if ok, return appropriately masked word */
168	if (status == 0) {
169	switch (size) {
170	case sizeof(u8):
171	return word & 0xff;
172	case sizeof(u16):
173	return word & 0xffff;
174	case sizeof(u32):
175	return word;
176	default:
177	sdiodev->regfail = true;
178
179	}
180	}
181
182	/* otherwise, bad sdio access or invalid size */
183	brcmf_dbg(ERROR, "error reading addr 0x%04x size %d\n", addr, size);
184	return 0xFFFFFFFF;
185	}
186
187	u32 brcmf_sdcard_reg_write(struct brcmf_sdio_dev *sdiodev, u32 addr, uint size,
188	u32 data)
189	{
190	int status;
191	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
192	int err = 0;
193
194	brcmf_dbg(INFO, "fun = 1, addr = 0x%x, uint%ddata = 0x%x\n",
195	addr, size * 8, data);
196
197	if (bar0 != sdiodev->sbwad) {
198	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
199	if (err)
200	return err;
201
202	sdiodev->sbwad = bar0;
203	}
204
205	addr &= SBSDIO_SB_OFT_ADDR_MASK;
206	if (size == 4)
207	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
208	status =
209	brcmf_sdioh_request_word(sdiodev, SDIOH_WRITE, SDIO_FUNC_1,
210	addr, &data, size);
211	sdiodev->regfail = (status != 0);
212
213	if (status == 0)
214	return 0;
215
216	brcmf_dbg(ERROR, "error writing 0x%08x to addr 0x%04x size %d\n",
217	data, addr, size);
218	return 0xFFFFFFFF;
219	}
220
221	bool brcmf_sdcard_regfail(struct brcmf_sdio_dev *sdiodev)
222	{
223	return sdiodev->regfail;
224	}
225
5adfeb63 AS	226	static int brcmf_sdcard_recv_prepare(struct brcmf_sdio_dev *sdiodev, uint fn,
5adfeb63 AS	227	uint flags, uint width, u32 *addr)
5b435de0	228	{
5adfeb63	229	uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
5b435de0 AS	230	int err = 0;
5b435de0 AS	231
5b435de0 AS	232	/* Async not implemented yet */
	233	if (flags & SDIO_REQ_ASYNC)
	234	return -ENOTSUPP;
	235
	236	if (bar0 != sdiodev->sbwad) {
	237	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
	238	if (err)
	239	return err;
	240
	241	sdiodev->sbwad = bar0;
	242	}
	243
5adfeb63 AS	244	*addr &= SBSDIO_SB_OFT_ADDR_MASK;
	245
	246	if (width == 4)
	247	*addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	248
	249	return 0;
	250	}
	251
	252	int
	253	brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	254	uint flags, u8 *buf, uint nbytes)
	255	{
	256	struct sk_buff *mypkt;
	257	int err;
	258
	259	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	260	if (!mypkt) {
	261	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	262	nbytes);
	263	return -EIO;
	264	}
	265
	266	err = brcmf_sdcard_recv_pkt(sdiodev, addr, fn, flags, mypkt);
	267	if (!err)
	268	memcpy(buf, mypkt->data, nbytes);
	269
	270	brcmu_pkt_buf_free_skb(mypkt);
	271	return err;
	272	}
	273
	274	int
	275	brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	276	uint flags, struct sk_buff *pkt)
	277	{
	278	uint incr_fix;
	279	uint width;
	280	int err = 0;
	281
	282	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
	283	fn, addr, pkt->len);
	284
	285	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	286	err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
	287	if (err)
	288	return err;
5b435de0 AS	289
5b435de0 AS	290	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
5adfeb63	291	err = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_READ,
4c6e869d	292	fn, addr, pkt);
5adfeb63 AS	293
	294	return err;
	295	}
	296
	297	int brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	298	uint flags, struct sk_buff_head *pktq)
	299	{
	300	uint incr_fix;
	301	uint width;
	302	int err = 0;
	303
	304	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
	305	fn, addr, pktq->qlen);
	306
5b435de0	307	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
5adfeb63 AS	308	err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
	309	if (err)
	310	return err;
5b435de0	311
5adfeb63 AS	312	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	313	err = brcmf_sdioh_request_chain(sdiodev, incr_fix, SDIOH_READ, fn, addr,
	314	pktq);
5b435de0	315
5adfeb63	316	return err;
5b435de0 AS	317	}
	318
	319	int
	320	brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
5adfeb63 AS	321	uint flags, u8 *buf, uint nbytes)
	322	{
	323	struct sk_buff *mypkt;
	324	int err;
	325
	326	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	327	if (!mypkt) {
	328	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	329	nbytes);
	330	return -EIO;
	331	}
	332
	333	memcpy(mypkt->data, buf, nbytes);
	334	err = brcmf_sdcard_send_pkt(sdiodev, addr, fn, flags, mypkt);
	335
	336	brcmu_pkt_buf_free_skb(mypkt);
	337	return err;
	338
	339	}
	340
	341	int
	342	brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
	343	uint flags, struct sk_buff *pkt)
5b435de0 AS	344	{
	345	uint incr_fix;
	346	uint width;
	347	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	348	int err = 0;
	349
5adfeb63 AS	350	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
5adfeb63 AS	351	fn, addr, pkt->len);
5b435de0 AS	352
	353	/* Async not implemented yet */
	354	if (flags & SDIO_REQ_ASYNC)
	355	return -ENOTSUPP;
	356
	357	if (bar0 != sdiodev->sbwad) {
	358	err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
	359	if (err)
	360	return err;
	361
	362	sdiodev->sbwad = bar0;
	363	}
	364
	365	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	366
	367	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
	368	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
	369	if (width == 4)
	370	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	371
	372	return brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_WRITE, fn,
4c6e869d	373	addr, pkt);
5b435de0 AS	374	}
	375
	376	int brcmf_sdcard_rwdata(struct brcmf_sdio_dev *sdiodev, uint rw, u32 addr,
	377	u8 *buf, uint nbytes)
	378	{
4c6e869d AS	379	struct sk_buff *mypkt;
	380	bool write = rw ? SDIOH_WRITE : SDIOH_READ;
	381	int err;
	382
5b435de0 AS	383	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	384	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	385
4c6e869d AS	386	mypkt = brcmu_pkt_buf_get_skb(nbytes);
	387	if (!mypkt) {
	388	brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
	389	nbytes);
	390	return -EIO;
	391	}
	392
	393	/* For a write, copy the buffer data into the packet. */
	394	if (write)
	395	memcpy(mypkt->data, buf, nbytes);
	396
	397	err = brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_INC, write,
	398	SDIO_FUNC_1, addr, mypkt);
	399
	400	/* For a read, copy the packet data back to the buffer. */
	401	if (!err && !write)
	402	memcpy(buf, mypkt->data, nbytes);
	403
	404	brcmu_pkt_buf_free_skb(mypkt);
	405	return err;
5b435de0 AS	406	}
	407
	408	int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
	409	{
	410	char t_func = (char)fn;
	411	brcmf_dbg(TRACE, "Enter\n");
	412
	413	/* issue abort cmd52 command through F0 */
	414	brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0,
	415	SDIO_CCCR_ABORT, &t_func);
	416
	417	brcmf_dbg(TRACE, "Exit\n");
	418	return 0;
	419	}
	420
	421	int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
	422	{
	423	u32 regs = 0;
	424	int ret = 0;
	425
	426	ret = brcmf_sdioh_attach(sdiodev);
	427	if (ret)
	428	goto out;
	429
	430	regs = SI_ENUM_BASE;
	431
	432	/* Report the BAR, to fix if needed */
	433	sdiodev->sbwad = SI_ENUM_BASE;
	434
	435	/* try to attach to the target device */
4175b88b	436	sdiodev->bus = brcmf_sdbrcm_probe(regs, sdiodev);
5b435de0 AS	437	if (!sdiodev->bus) {
	438	brcmf_dbg(ERROR, "device attach failed\n");
	439	ret = -ENODEV;
	440	goto out;
	441	}
	442
	443	out:
	444	if (ret)
	445	brcmf_sdio_remove(sdiodev);
	446
	447	return ret;
	448	}
	449	EXPORT_SYMBOL(brcmf_sdio_probe);
	450
	451	int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev)
	452	{
	453	if (sdiodev->bus) {
	454	brcmf_sdbrcm_disconnect(sdiodev->bus);
	455	sdiodev->bus = NULL;
	456	}
	457
	458	brcmf_sdioh_detach(sdiodev);
	459
	460	sdiodev->sbwad = 0;
	461
	462	return 0;
	463	}
	464	EXPORT_SYMBOL(brcmf_sdio_remove);
	465
	466	void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable)
	467	{
	468	if (enable)
	469	brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
	470	else
	471	brcmf_sdbrcm_wd_timer(sdiodev->bus, 0);
	472	}