drivers/staging/brcm80211/brcmfmac/bcmsdh.c - kernel/msm-4.9 - Gitiles

 /*
  * 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/pci_ids.h>
 #include <linux/sched.h>

 #include <defs.h>
 #include <brcm_hw_ids.h>
 #include <brcmu_utils.h>
 #include <brcmu_wifi.h>
 #include <soc.h>
 #include "bcmsdbus.h"		/* common SDIO/controller interface */
 #include "sbsdio.h"		/* BRCM sdio device core */
 #include "dngl_stats.h"
 #include "dhd.h"

 #define SDIOH_API_ACCESS_RETRY_LIMIT	2
 const uint brcmf_sdio_msglevel = BRCMF_SD_ERROR_VAL;

 struct brcmf_sdio_card {
 	bool init_success;	/* underlying driver successfully attached */
 	void *sdioh;		/* handler for sdioh */
 	u32 vendevid;	/* Target Vendor and Device ID on SD bus */
 	bool regfail;		/* Save status of last
 				 reg_read/reg_write call */
 	u32 sbwad;		/* Save backplane window address */
 };
 /* local copy of bcm sd handler */
 static struct brcmf_sdio_card *l_card;

 struct brcmf_sdio_card*
 brcmf_sdcard_attach(void *cfghdl, void **regsva, uint irq)
 {
 	struct brcmf_sdio_card *card;

 	card = kzalloc(sizeof(struct brcmf_sdio_card), GFP_ATOMIC);
 	if (card == NULL) {
 		BRCMF_SD_ERROR(("sdcard_attach: out of memory"));
 		return NULL;
 	}

 	/* save the handler locally */
 	l_card = card;

 	card->sdioh = brcmf_sdioh_attach(cfghdl, irq);
 	if (!card->sdioh) {
 		brcmf_sdcard_detach(card);
 		return NULL;
 	}

 	card->init_success = true;

 	*regsva = (u32 *) SI_ENUM_BASE;

 	/* Report the BAR, to fix if needed */
 	card->sbwad = SI_ENUM_BASE;
 	return card;
 }

 int brcmf_sdcard_detach(struct brcmf_sdio_card *card)
 {
 	if (card != NULL) {
 		if (card->sdioh) {
 			brcmf_sdioh_detach(card->sdioh);
 			card->sdioh = NULL;
 		}
 		kfree(card);
 	}

 	l_card = NULL;
 	return 0;
 }

 int
 brcmf_sdcard_iovar_op(struct brcmf_sdio_card *card, const char *name,
 		void *params, int plen, void *arg, int len, bool set)
 {
 	return brcmf_sdioh_iovar_op(card->sdioh, name, params, plen, arg,
 				    len, set);
 }

 bool brcmf_sdcard_intr_query(struct brcmf_sdio_card *card)
 {
 	int status;
 	bool on;

 	ASSERT(card);
 	status = brcmf_sdioh_interrupt_query(card->sdioh, &on);
 	if (status == 0)
 		return false;
 	else
 		return on;
 }

 int brcmf_sdcard_intr_enable(struct brcmf_sdio_card *card)
 {
 	ASSERT(card);

 	return brcmf_sdioh_interrupt_set(card->sdioh, true);
 }

 int brcmf_sdcard_intr_disable(struct brcmf_sdio_card *card)
 {
 	ASSERT(card);

 	return brcmf_sdioh_interrupt_set(card->sdioh, false);
 }

 int brcmf_sdcard_intr_reg(struct brcmf_sdio_card *card,
 			  brcmf_sdiocard_cb_fn_t fn,
 			  void *argh)
 {
 	ASSERT(card);

 	return brcmf_sdioh_interrupt_register(card->sdioh, fn, argh);
 }

 int brcmf_sdcard_intr_dereg(struct brcmf_sdio_card *card)
 {
 	ASSERT(card);

 	return brcmf_sdioh_interrupt_deregister(card->sdioh);
 }

 int brcmf_sdcard_devremove_reg(struct brcmf_sdio_card *card,
 			       brcmf_sdiocard_cb_fn_t fn,
 			       void *argh)
 {
 	ASSERT(card);

 	/* don't support yet */
 	return -ENOTSUPP;
 }

 u8 brcmf_sdcard_cfg_read(struct brcmf_sdio_card *card, uint fnc_num, u32 addr,
 			 int *err)
 {
 	int status;
 #ifdef SDIOH_API_ACCESS_RETRY_LIMIT
 	s32 retry = 0;
 #endif
 	u8 data = 0;

 	if (!card)
 		card = l_card;

 	ASSERT(card->init_success);

 #ifdef SDIOH_API_ACCESS_RETRY_LIMIT
 	do {
 		if (retry)	/* wait for 1 ms till bus get settled down */
 			udelay(1000);
 #endif
 		status =
 		    brcmf_sdioh_cfg_read(card->sdioh, fnc_num, addr,
 				   (u8 *) &data);
 #ifdef SDIOH_API_ACCESS_RETRY_LIMIT
 	} while (status != 0
 		 && (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
 #endif
 	if (err)
 		*err = status;

 	BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, u8data = 0x%x\n",
 		     __func__, fnc_num, addr, data));

 	return data;
 }

 void
 brcmf_sdcard_cfg_write(struct brcmf_sdio_card *card, uint fnc_num, u32 addr,
 		       u8 data, int *err)
 {
 	int status;
 #ifdef SDIOH_API_ACCESS_RETRY_LIMIT
 	s32 retry = 0;
 #endif

 	if (!card)
 		card = l_card;

 	ASSERT(card->init_success);

 #ifdef SDIOH_API_ACCESS_RETRY_LIMIT
 	do {
 		if (retry)	/* wait for 1 ms till bus get settled down */
 			udelay(1000);
 #endif
 		status =
 		    brcmf_sdioh_cfg_write(card->sdioh, fnc_num, addr,
 				    (u8 *) &data);
 #ifdef SDIOH_API_ACCESS_RETRY_LIMIT
 	} while (status != 0
 		 && (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
 #endif
 	if (err)
 		*err = status;

 	BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, u8data = 0x%x\n",
 		     __func__, fnc_num, addr, data));
 }

 u32 brcmf_sdcard_cfg_read_word(struct brcmf_sdio_card *card, uint fnc_num,
 			       u32 addr, int *err)
 {
 	int status;
 	u32 data = 0;

 	if (!card)
 		card = l_card;

 	ASSERT(card->init_success);

 	status = brcmf_sdioh_request_word(card->sdioh, SDIOH_CMD_TYPE_NORMAL,
 		SDIOH_READ, fnc_num, addr, &data, 4);

 	if (err)
 		*err = status;

 	BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, u32data = 0x%x\n",
 		     __func__, fnc_num, addr, data));

 	return data;
 }

 void
 brcmf_sdcard_cfg_write_word(struct brcmf_sdio_card *card, uint fnc_num,
 			    u32 addr, u32 data, int *err)
 {
 	int status;

 	if (!card)
 		card = l_card;

 	ASSERT(card->init_success);

 	status =
 	    brcmf_sdioh_request_word(card->sdioh, SDIOH_CMD_TYPE_NORMAL,
 			       SDIOH_WRITE, fnc_num, addr, &data, 4);

 	if (err)
 		*err = status;

 	BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, u32data = 0x%x\n",
 		     __func__, fnc_num, addr, data));
 }

 int brcmf_sdcard_cis_read(struct brcmf_sdio_card *card, uint func, u8 * cis,
 			  uint length)
 {
 	int status;

 	u8 *tmp_buf, *tmp_ptr;
 	u8 *ptr;
 	bool ascii = func & ~0xf;
 	func &= 0x7;

 	if (!card)
 		card = l_card;

 	ASSERT(card->init_success);
 	ASSERT(cis);
 	ASSERT(length <= SBSDIO_CIS_SIZE_LIMIT);

 	status = brcmf_sdioh_cis_read(card->sdioh, func, cis, length);

 	if (ascii) {
 		/* Move binary bits to tmp and format them
 			 into the provided buffer. */
 		tmp_buf = kmalloc(length, GFP_ATOMIC);
 		if (tmp_buf == NULL) {
 			BRCMF_SD_ERROR(("%s: out of memory\n", __func__));
 			return -ENOMEM;
 		}
 		memcpy(tmp_buf, cis, length);
 		for (tmp_ptr = tmp_buf, ptr = cis; ptr < (cis + length - 4);
 		     tmp_ptr++) {
 			ptr += sprintf((char *)ptr, "%.2x ", *tmp_ptr & 0xff);
 			if ((((tmp_ptr - tmp_buf) + 1) & 0xf) == 0)
 				ptr += sprintf((char *)ptr, "\n");
 		}
 		kfree(tmp_buf);
 	}

 	return status;
 }

 static int
 brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_card *card, u32 address)
 {
 	int err = 0;
 	brcmf_sdcard_cfg_write(card, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW,
 			 (address >> 8) & SBSDIO_SBADDRLOW_MASK, &err);
 	if (!err)
 		brcmf_sdcard_cfg_write(card, SDIO_FUNC_1,
 				       SBSDIO_FUNC1_SBADDRMID,
 				       (address >> 16) & SBSDIO_SBADDRMID_MASK,
 				       &err);
 	if (!err)
 		brcmf_sdcard_cfg_write(card, SDIO_FUNC_1,
 				       SBSDIO_FUNC1_SBADDRHIGH,
 				       (address >> 24) & SBSDIO_SBADDRHIGH_MASK,
 				       &err);

 	return err;
 }

 u32 brcmf_sdcard_reg_read(struct brcmf_sdio_card *card, u32 addr, uint size)
 {
 	int status;
 	u32 word = 0;
 	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;

 	BRCMF_SD_INFO(("%s:fun = 1, addr = 0x%x, ", __func__, addr));

 	if (!card)
 		card = l_card;

 	ASSERT(card->init_success);

 	if (bar0 != card->sbwad) {
 		if (brcmf_sdcard_set_sbaddr_window(card, bar0))
 			return 0xFFFFFFFF;

 		card->sbwad = bar0;
 	}

 	addr &= SBSDIO_SB_OFT_ADDR_MASK;
 	if (size == 4)
 		addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;

 	status = brcmf_sdioh_request_word(card->sdioh, SDIOH_CMD_TYPE_NORMAL,
 				    SDIOH_READ, SDIO_FUNC_1, addr, &word, size);

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

 	BRCMF_SD_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:
 			card->regfail = true;

 		}
 	}

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

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

 	BRCMF_SD_INFO(("%s:fun = 1, addr = 0x%x, uint%ddata = 0x%x\n",
 		     __func__, addr, size * 8, data));

 	if (!card)
 		card = l_card;

 	ASSERT(card->init_success);

 	if (bar0 != card->sbwad) {
 		err = brcmf_sdcard_set_sbaddr_window(card, bar0);
 		if (err)
 			return err;

 		card->sbwad = bar0;
 	}

 	addr &= SBSDIO_SB_OFT_ADDR_MASK;
 	if (size == 4)
 		addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
 	status =
 	    brcmf_sdioh_request_word(card->sdioh, SDIOH_CMD_TYPE_NORMAL,
 			       SDIOH_WRITE, SDIO_FUNC_1, addr, &data, size);
 	card->regfail = (status != 0);

 	if (status == 0)
 		return 0;

 	BRCMF_SD_ERROR(("%s: error writing 0x%08x to addr 0x%04x size %d\n",
 		      __func__, data, addr, size));
 	return 0xFFFFFFFF;
 }

 bool brcmf_sdcard_regfail(struct brcmf_sdio_card *card)
 {
 	return card->regfail;
 }

 int
 brcmf_sdcard_recv_buf(struct brcmf_sdio_card *card, u32 addr, uint fn,
 		      uint flags,
 		      u8 *buf, uint nbytes, struct sk_buff *pkt,
 		      brcmf_sdio_cmplt_fn_t complete, void *handle)
 {
 	int status;
 	uint incr_fix;
 	uint width;
 	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
 	int err = 0;

 	ASSERT(card);
 	ASSERT(card->init_success);

 	BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, size = %d\n",
 		     __func__, fn, addr, nbytes));

 	/* Async not implemented yet */
 	ASSERT(!(flags & SDIO_REQ_ASYNC));
 	if (flags & SDIO_REQ_ASYNC)
 		return -ENOTSUPP;

 	if (bar0 != card->sbwad) {
 		err = brcmf_sdcard_set_sbaddr_window(card, bar0);
 		if (err)
 			return err;

 		card->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;

 	status = brcmf_sdioh_request_buffer(card->sdioh, SDIOH_DATA_PIO,
 		incr_fix, SDIOH_READ, fn, addr, width, nbytes, buf, pkt);

 	return status;
 }

 int
 brcmf_sdcard_send_buf(struct brcmf_sdio_card *card, u32 addr, uint fn,
 		      uint flags, u8 *buf, uint nbytes, void *pkt,
 		      brcmf_sdio_cmplt_fn_t complete, void *handle)
 {
 	uint incr_fix;
 	uint width;
 	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
 	int err = 0;

 	ASSERT(card);
 	ASSERT(card->init_success);

 	BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, size = %d\n",
 		     __func__, fn, addr, nbytes));

 	/* Async not implemented yet */
 	ASSERT(!(flags & SDIO_REQ_ASYNC));
 	if (flags & SDIO_REQ_ASYNC)
 		return -ENOTSUPP;

 	if (bar0 != card->sbwad) {
 		err = brcmf_sdcard_set_sbaddr_window(card, bar0);
 		if (err)
 			return err;

 		card->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(card->sdioh, SDIOH_DATA_PIO,
 		incr_fix, SDIOH_WRITE, fn, addr, width, nbytes, buf, pkt);
 }

 int brcmf_sdcard_rwdata(struct brcmf_sdio_card *card, uint rw, u32 addr,
 			u8 *buf, uint nbytes)
 {
 	ASSERT(card);
 	ASSERT(card->init_success);
 	ASSERT((addr & SBSDIO_SBWINDOW_MASK) == 0);

 	addr &= SBSDIO_SB_OFT_ADDR_MASK;
 	addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;

 	return brcmf_sdioh_request_buffer(card->sdioh, SDIOH_DATA_PIO,
 		SDIOH_DATA_INC, (rw ? SDIOH_WRITE : SDIOH_READ), SDIO_FUNC_1,
 		addr, 4, nbytes, buf, NULL);
 }

 int brcmf_sdcard_abort(struct brcmf_sdio_card *card, uint fn)
 {
 	return brcmf_sdioh_abort(card->sdioh, fn);
 }

 int brcmf_sdcard_start(struct brcmf_sdio_card *card, int stage)
 {
 	return brcmf_sdioh_start(card->sdioh, stage);
 }

 int brcmf_sdcard_stop(struct brcmf_sdio_card *card)
 {
 	return brcmf_sdioh_stop(card->sdioh);
 }

 int brcmf_sdcard_query_device(struct brcmf_sdio_card *card)
 {
 	card->vendevid = (PCI_VENDOR_ID_BROADCOM << 16) | 0;
 	return card->vendevid;
 }

 uint brcmf_sdcard_query_iofnum(struct brcmf_sdio_card *card)
 {
 	if (!card)
 		card = l_card;

 	return brcmf_sdioh_query_iofnum(card->sdioh);
 }

 void *brcmf_sdcard_get_sdioh(struct brcmf_sdio_card *card)
 {
 	ASSERT(card);
 	return card->sdioh;
 }

 /* Function to pass device-status bits to DHD. */
 u32 brcmf_sdcard_get_dstatus(struct brcmf_sdio_card *card)
 {
 	return 0;
 }

 u32 brcmf_sdcard_cur_sbwad(struct brcmf_sdio_card *card)
 {
 	if (!card)
 		card = l_card;

 	return card->sbwad;
 }

 void brcmf_sdcard_chipinfo(struct brcmf_sdio_card *card, u32 chip, u32 chiprev)
 {
 	return;
 }
	/*
	* 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/pci_ids.h>
	#include <linux/sched.h>

	#include <defs.h>
	#include <brcm_hw_ids.h>
	#include <brcmu_utils.h>
	#include <brcmu_wifi.h>
	#include <soc.h>
	#include "bcmsdbus.h" /* common SDIO/controller interface */
	#include "sbsdio.h" /* BRCM sdio device core */
	#include "dngl_stats.h"
	#include "dhd.h"

	#define SDIOH_API_ACCESS_RETRY_LIMIT 2
	const uint brcmf_sdio_msglevel = BRCMF_SD_ERROR_VAL;

	struct brcmf_sdio_card {
	bool init_success; /* underlying driver successfully attached */
	void sdioh; / handler for sdioh */
	u32 vendevid; /* Target Vendor and Device ID on SD bus */
	bool regfail; /* Save status of last
	reg_read/reg_write call */
	u32 sbwad; /* Save backplane window address */
	};
	/* local copy of bcm sd handler */
	static struct brcmf_sdio_card *l_card;

	struct brcmf_sdio_card*
	brcmf_sdcard_attach(void cfghdl, void *regsva, uint irq)
	{
	struct brcmf_sdio_card *card;

	card = kzalloc(sizeof(struct brcmf_sdio_card), GFP_ATOMIC);
	if (card == NULL) {
	BRCMF_SD_ERROR(("sdcard_attach: out of memory"));
	return NULL;
	}

	/* save the handler locally */
	l_card = card;

	card->sdioh = brcmf_sdioh_attach(cfghdl, irq);
	if (!card->sdioh) {
	brcmf_sdcard_detach(card);
	return NULL;
	}

	card->init_success = true;

	regsva = (u32 ) SI_ENUM_BASE;

	/* Report the BAR, to fix if needed */
	card->sbwad = SI_ENUM_BASE;
	return card;
	}

	int brcmf_sdcard_detach(struct brcmf_sdio_card *card)
	{
	if (card != NULL) {
	if (card->sdioh) {
	brcmf_sdioh_detach(card->sdioh);
	card->sdioh = NULL;
	}
	kfree(card);
	}

	l_card = NULL;
	return 0;
	}

	int
	brcmf_sdcard_iovar_op(struct brcmf_sdio_card card, const char name,
	void params, int plen, void arg, int len, bool set)
	{
	return brcmf_sdioh_iovar_op(card->sdioh, name, params, plen, arg,
	len, set);
	}

	bool brcmf_sdcard_intr_query(struct brcmf_sdio_card *card)
	{
	int status;
	bool on;

	ASSERT(card);
	status = brcmf_sdioh_interrupt_query(card->sdioh, &on);
	if (status == 0)
	return false;
	else
	return on;
	}

	int brcmf_sdcard_intr_enable(struct brcmf_sdio_card *card)
	{
	ASSERT(card);

	return brcmf_sdioh_interrupt_set(card->sdioh, true);
	}

	int brcmf_sdcard_intr_disable(struct brcmf_sdio_card *card)
	{
	ASSERT(card);

	return brcmf_sdioh_interrupt_set(card->sdioh, false);
	}

	int brcmf_sdcard_intr_reg(struct brcmf_sdio_card *card,
	brcmf_sdiocard_cb_fn_t fn,
	void *argh)
	{
	ASSERT(card);

	return brcmf_sdioh_interrupt_register(card->sdioh, fn, argh);
	}

	int brcmf_sdcard_intr_dereg(struct brcmf_sdio_card *card)
	{
	ASSERT(card);

	return brcmf_sdioh_interrupt_deregister(card->sdioh);
	}

	int brcmf_sdcard_devremove_reg(struct brcmf_sdio_card *card,
	brcmf_sdiocard_cb_fn_t fn,
	void *argh)
	{
	ASSERT(card);

	/* don't support yet */
	return -ENOTSUPP;
	}

	u8 brcmf_sdcard_cfg_read(struct brcmf_sdio_card *card, uint fnc_num, u32 addr,
	int *err)
	{
	int status;
	#ifdef SDIOH_API_ACCESS_RETRY_LIMIT
	s32 retry = 0;
	#endif
	u8 data = 0;

	if (!card)
	card = l_card;

	ASSERT(card->init_success);

	#ifdef SDIOH_API_ACCESS_RETRY_LIMIT
	do {
	if (retry) /* wait for 1 ms till bus get settled down */
	udelay(1000);
	#endif
	status =
	brcmf_sdioh_cfg_read(card->sdioh, fnc_num, addr,
	(u8 *) &data);
	#ifdef SDIOH_API_ACCESS_RETRY_LIMIT
	} while (status != 0
	&& (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
	#endif
	if (err)
	*err = status;

	BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, u8data = 0x%x\n",
	__func__, fnc_num, addr, data));

	return data;
	}

	void
	brcmf_sdcard_cfg_write(struct brcmf_sdio_card *card, uint fnc_num, u32 addr,
	u8 data, int *err)
	{
	int status;
	#ifdef SDIOH_API_ACCESS_RETRY_LIMIT
	s32 retry = 0;
	#endif

	if (!card)
	card = l_card;

	ASSERT(card->init_success);

	#ifdef SDIOH_API_ACCESS_RETRY_LIMIT
	do {
	if (retry) /* wait for 1 ms till bus get settled down */
	udelay(1000);
	#endif
	status =
	brcmf_sdioh_cfg_write(card->sdioh, fnc_num, addr,
	(u8 *) &data);
	#ifdef SDIOH_API_ACCESS_RETRY_LIMIT
	} while (status != 0
	&& (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
	#endif
	if (err)
	*err = status;

	BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, u8data = 0x%x\n",
	__func__, fnc_num, addr, data));
	}

	u32 brcmf_sdcard_cfg_read_word(struct brcmf_sdio_card *card, uint fnc_num,
	u32 addr, int *err)
	{
	int status;
	u32 data = 0;

	if (!card)
	card = l_card;

	ASSERT(card->init_success);

	status = brcmf_sdioh_request_word(card->sdioh, SDIOH_CMD_TYPE_NORMAL,
	SDIOH_READ, fnc_num, addr, &data, 4);

	if (err)
	*err = status;

	BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, u32data = 0x%x\n",
	__func__, fnc_num, addr, data));

	return data;
	}

	void
	brcmf_sdcard_cfg_write_word(struct brcmf_sdio_card *card, uint fnc_num,
	u32 addr, u32 data, int *err)
	{
	int status;

	if (!card)
	card = l_card;

	ASSERT(card->init_success);

	status =
	brcmf_sdioh_request_word(card->sdioh, SDIOH_CMD_TYPE_NORMAL,
	SDIOH_WRITE, fnc_num, addr, &data, 4);

	if (err)
	*err = status;

	BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, u32data = 0x%x\n",
	__func__, fnc_num, addr, data));
	}

	int brcmf_sdcard_cis_read(struct brcmf_sdio_card card, uint func, u8 cis,
	uint length)
	{
	int status;

	u8 tmp_buf, tmp_ptr;
	u8 *ptr;
	bool ascii = func & ~0xf;
	func &= 0x7;

	if (!card)
	card = l_card;

	ASSERT(card->init_success);
	ASSERT(cis);
	ASSERT(length <= SBSDIO_CIS_SIZE_LIMIT);

	status = brcmf_sdioh_cis_read(card->sdioh, func, cis, length);

	if (ascii) {
	/* Move binary bits to tmp and format them
	into the provided buffer. */
	tmp_buf = kmalloc(length, GFP_ATOMIC);
	if (tmp_buf == NULL) {
	BRCMF_SD_ERROR(("%s: out of memory\n", __func__));
	return -ENOMEM;
	}
	memcpy(tmp_buf, cis, length);
	for (tmp_ptr = tmp_buf, ptr = cis; ptr < (cis + length - 4);
	tmp_ptr++) {
	ptr += sprintf((char )ptr, "%.2x ", tmp_ptr & 0xff);
	if ((((tmp_ptr - tmp_buf) + 1) & 0xf) == 0)
	ptr += sprintf((char *)ptr, "\n");
	}
	kfree(tmp_buf);
	}

	return status;
	}

	static int
	brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_card *card, u32 address)
	{
	int err = 0;
	brcmf_sdcard_cfg_write(card, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW,
	(address >> 8) & SBSDIO_SBADDRLOW_MASK, &err);
	if (!err)
	brcmf_sdcard_cfg_write(card, SDIO_FUNC_1,
	SBSDIO_FUNC1_SBADDRMID,
	(address >> 16) & SBSDIO_SBADDRMID_MASK,
	&err);
	if (!err)
	brcmf_sdcard_cfg_write(card, SDIO_FUNC_1,
	SBSDIO_FUNC1_SBADDRHIGH,
	(address >> 24) & SBSDIO_SBADDRHIGH_MASK,
	&err);

	return err;
	}

	u32 brcmf_sdcard_reg_read(struct brcmf_sdio_card *card, u32 addr, uint size)
	{
	int status;
	u32 word = 0;
	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;

	BRCMF_SD_INFO(("%s:fun = 1, addr = 0x%x, ", __func__, addr));

	if (!card)
	card = l_card;

	ASSERT(card->init_success);

	if (bar0 != card->sbwad) {
	if (brcmf_sdcard_set_sbaddr_window(card, bar0))
	return 0xFFFFFFFF;

	card->sbwad = bar0;
	}

	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	if (size == 4)
	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;

	status = brcmf_sdioh_request_word(card->sdioh, SDIOH_CMD_TYPE_NORMAL,
	SDIOH_READ, SDIO_FUNC_1, addr, &word, size);

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

	BRCMF_SD_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:
	card->regfail = true;

	}
	}

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

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

	BRCMF_SD_INFO(("%s:fun = 1, addr = 0x%x, uint%ddata = 0x%x\n",
	__func__, addr, size * 8, data));

	if (!card)
	card = l_card;

	ASSERT(card->init_success);

	if (bar0 != card->sbwad) {
	err = brcmf_sdcard_set_sbaddr_window(card, bar0);
	if (err)
	return err;

	card->sbwad = bar0;
	}

	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	if (size == 4)
	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;
	status =
	brcmf_sdioh_request_word(card->sdioh, SDIOH_CMD_TYPE_NORMAL,
	SDIOH_WRITE, SDIO_FUNC_1, addr, &data, size);
	card->regfail = (status != 0);

	if (status == 0)
	return 0;

	BRCMF_SD_ERROR(("%s: error writing 0x%08x to addr 0x%04x size %d\n",
	__func__, data, addr, size));
	return 0xFFFFFFFF;
	}

	bool brcmf_sdcard_regfail(struct brcmf_sdio_card *card)
	{
	return card->regfail;
	}

	int
	brcmf_sdcard_recv_buf(struct brcmf_sdio_card *card, u32 addr, uint fn,
	uint flags,
	u8 buf, uint nbytes, struct sk_buff pkt,
	brcmf_sdio_cmplt_fn_t complete, void *handle)
	{
	int status;
	uint incr_fix;
	uint width;
	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	int err = 0;

	ASSERT(card);
	ASSERT(card->init_success);

	BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, size = %d\n",
	__func__, fn, addr, nbytes));

	/* Async not implemented yet */
	ASSERT(!(flags & SDIO_REQ_ASYNC));
	if (flags & SDIO_REQ_ASYNC)
	return -ENOTSUPP;

	if (bar0 != card->sbwad) {
	err = brcmf_sdcard_set_sbaddr_window(card, bar0);
	if (err)
	return err;

	card->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;

	status = brcmf_sdioh_request_buffer(card->sdioh, SDIOH_DATA_PIO,
	incr_fix, SDIOH_READ, fn, addr, width, nbytes, buf, pkt);

	return status;
	}

	int
	brcmf_sdcard_send_buf(struct brcmf_sdio_card *card, u32 addr, uint fn,
	uint flags, u8 buf, uint nbytes, void pkt,
	brcmf_sdio_cmplt_fn_t complete, void *handle)
	{
	uint incr_fix;
	uint width;
	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
	int err = 0;

	ASSERT(card);
	ASSERT(card->init_success);

	BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, size = %d\n",
	__func__, fn, addr, nbytes));

	/* Async not implemented yet */
	ASSERT(!(flags & SDIO_REQ_ASYNC));
	if (flags & SDIO_REQ_ASYNC)
	return -ENOTSUPP;

	if (bar0 != card->sbwad) {
	err = brcmf_sdcard_set_sbaddr_window(card, bar0);
	if (err)
	return err;

	card->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(card->sdioh, SDIOH_DATA_PIO,
	incr_fix, SDIOH_WRITE, fn, addr, width, nbytes, buf, pkt);
	}

	int brcmf_sdcard_rwdata(struct brcmf_sdio_card *card, uint rw, u32 addr,
	u8 *buf, uint nbytes)
	{
	ASSERT(card);
	ASSERT(card->init_success);
	ASSERT((addr & SBSDIO_SBWINDOW_MASK) == 0);

	addr &= SBSDIO_SB_OFT_ADDR_MASK;
	addr \|= SBSDIO_SB_ACCESS_2_4B_FLAG;

	return brcmf_sdioh_request_buffer(card->sdioh, SDIOH_DATA_PIO,
	SDIOH_DATA_INC, (rw ? SDIOH_WRITE : SDIOH_READ), SDIO_FUNC_1,
	addr, 4, nbytes, buf, NULL);
	}

	int brcmf_sdcard_abort(struct brcmf_sdio_card *card, uint fn)
	{
	return brcmf_sdioh_abort(card->sdioh, fn);
	}

	int brcmf_sdcard_start(struct brcmf_sdio_card *card, int stage)
	{
	return brcmf_sdioh_start(card->sdioh, stage);
	}

	int brcmf_sdcard_stop(struct brcmf_sdio_card *card)
	{
	return brcmf_sdioh_stop(card->sdioh);
	}

	int brcmf_sdcard_query_device(struct brcmf_sdio_card *card)
	{
	card->vendevid = (PCI_VENDOR_ID_BROADCOM << 16) \| 0;
	return card->vendevid;
	}

	uint brcmf_sdcard_query_iofnum(struct brcmf_sdio_card *card)
	{
	if (!card)
	card = l_card;

	return brcmf_sdioh_query_iofnum(card->sdioh);
	}

	void brcmf_sdcard_get_sdioh(struct brcmf_sdio_card card)
	{
	ASSERT(card);
	return card->sdioh;
	}

	/* Function to pass device-status bits to DHD. */
	u32 brcmf_sdcard_get_dstatus(struct brcmf_sdio_card *card)
	{
	return 0;
	}

	u32 brcmf_sdcard_cur_sbwad(struct brcmf_sdio_card *card)
	{
	if (!card)
	card = l_card;

	return card->sbwad;
	}

	void brcmf_sdcard_chipinfo(struct brcmf_sdio_card *card, u32 chip, u32 chiprev)
	{
	return;
	}