[deliverable/linux.git] / drivers / net / wireless / brcm80211 / brcmfmac / bcmsdh_sdmmc.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.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/types.h>
#include <linux/netdevice.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/core.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/card.h>
#include <linux/suspend.h>
#include <linux/errno.h>
#include <linux/sched.h>	/* request_irq() */
#include <linux/module.h>
#include <linux/platform_device.h>
#include <net/cfg80211.h>

#include <defs.h>
#include <brcm_hw_ids.h>
#include <brcmu_utils.h>
#include <brcmu_wifi.h>
#include "sdio_host.h"
#include "dhd_dbg.h"
#include "dhd_bus.h"

#define SDIO_VENDOR_ID_BROADCOM		0x02d0

#define DMA_ALIGN_MASK	0x03

#define SDIO_DEVICE_ID_BROADCOM_4329	0x4329
#define SDIO_DEVICE_ID_BROADCOM_4330	0x4330

#define SDIO_FUNC1_BLOCKSIZE		64
#define SDIO_FUNC2_BLOCKSIZE		512

/* devices we support, null terminated */
static const struct sdio_device_id brcmf_sdmmc_ids[] = {
	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
	{ /* end: all zeroes */ },
};
MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);

#ifdef CONFIG_BRCMFMAC_SDIO_OOB
static struct list_head oobirq_lh;
struct brcmf_sdio_oobirq {
	unsigned int irq;
	unsigned long flags;
	struct list_head list;
};
#endif		/* CONFIG_BRCMFMAC_SDIO_OOB */

static bool
brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
{
	bool is_err = false;
#ifdef CONFIG_PM_SLEEP
	is_err = atomic_read(&sdiodev->suspend);
#endif
	return is_err;
}

static void
brcmf_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, wait_queue_head_t *wq)
{
#ifdef CONFIG_PM_SLEEP
	int retry = 0;
	while (atomic_read(&sdiodev->suspend) && retry++ != 30)
		wait_event_timeout(*wq, false, HZ/100);
#endif
}

static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
					    uint regaddr, u8 *byte)
{
	struct sdio_func *sdfunc = sdiodev->func[0];
	int err_ret;

	/*
	 * Can only directly write to some F0 registers.
	 * Handle F2 enable/disable and Abort command
	 * as a special case.
	 */
	if (regaddr == SDIO_CCCR_IOEx) {
		sdfunc = sdiodev->func[2];
		if (sdfunc) {
			sdio_claim_host(sdfunc);
			if (*byte & SDIO_FUNC_ENABLE_2) {
				/* Enable Function 2 */
				err_ret = sdio_enable_func(sdfunc);
				if (err_ret)
					brcmf_dbg(ERROR,
						  "enable F2 failed:%d\n",
						  err_ret);
			} else {
				/* Disable Function 2 */
				err_ret = sdio_disable_func(sdfunc);
				if (err_ret)
					brcmf_dbg(ERROR,
						  "Disable F2 failed:%d\n",
						  err_ret);
			}
			sdio_release_host(sdfunc);
		}
	} else if ((regaddr == SDIO_CCCR_ABORT) ||
		   (regaddr == SDIO_CCCR_IENx)) {
		sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func),
				 GFP_KERNEL);
		if (!sdfunc)
			return -ENOMEM;
		sdfunc->num = 0;
		sdio_claim_host(sdfunc);
		sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
		sdio_release_host(sdfunc);
		kfree(sdfunc);
	} else if (regaddr < 0xF0) {
		brcmf_dbg(ERROR, "F0 Wr:0x%02x: write disallowed\n", regaddr);
		err_ret = -EPERM;
	} else {
		sdio_claim_host(sdfunc);
		sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
		sdio_release_host(sdfunc);
	}

	return err_ret;
}

int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
			     uint regaddr, u8 *byte)
{
	int err_ret;

	brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);

	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
	if (brcmf_pm_resume_error(sdiodev))
		return -EIO;

	if (rw && func == 0) {
		/* handle F0 separately */
		err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
	} else {
		sdio_claim_host(sdiodev->func[func]);
		if (rw) /* CMD52 Write */
			sdio_writeb(sdiodev->func[func], *byte, regaddr,
				    &err_ret);
		else if (func == 0) {
			*byte = sdio_f0_readb(sdiodev->func[func], regaddr,
					      &err_ret);
		} else {
			*byte = sdio_readb(sdiodev->func[func], regaddr,
					   &err_ret);
		}
		sdio_release_host(sdiodev->func[func]);
	}

	if (err_ret)
		brcmf_dbg(ERROR, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
			  rw ? "write" : "read", func, regaddr, *byte, err_ret);

	return err_ret;
}

int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
			     uint rw, uint func, uint addr, u32 *word,
			     uint nbytes)
{
	int err_ret = -EIO;

	if (func == 0) {
		brcmf_dbg(ERROR, "Only CMD52 allowed to F0\n");
		return -EINVAL;
	}

	brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
		  rw, func, addr, nbytes);

	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
	if (brcmf_pm_resume_error(sdiodev))
		return -EIO;
	/* Claim host controller */
	sdio_claim_host(sdiodev->func[func]);

	if (rw) {		/* CMD52 Write */
		if (nbytes == 4)
			sdio_writel(sdiodev->func[func], *word, addr,
				    &err_ret);
		else if (nbytes == 2)
			sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
				    addr, &err_ret);
		else
			brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
	} else {		/* CMD52 Read */
		if (nbytes == 4)
			*word = sdio_readl(sdiodev->func[func], addr, &err_ret);
		else if (nbytes == 2)
			*word = sdio_readw(sdiodev->func[func], addr,
					   &err_ret) & 0xFFFF;
		else
			brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
	}

	/* Release host controller */
	sdio_release_host(sdiodev->func[func]);

	if (err_ret)
		brcmf_dbg(ERROR, "Failed to %s word, Err: 0x%08x\n",
			  rw ? "write" : "read", err_ret);

	return err_ret;
}

/* precondition: host controller is claimed */
static int
brcmf_sdioh_request_data(struct brcmf_sdio_dev *sdiodev, uint write, bool fifo,
			 uint func, uint addr, struct sk_buff *pkt, uint pktlen)
{
	int err_ret = 0;

	if ((write) && (!fifo)) {
		err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
					   ((u8 *) (pkt->data)), pktlen);
	} else if (write) {
		err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
					   ((u8 *) (pkt->data)), pktlen);
	} else if (fifo) {
		err_ret = sdio_readsb(sdiodev->func[func],
				      ((u8 *) (pkt->data)), addr, pktlen);
	} else {
		err_ret = sdio_memcpy_fromio(sdiodev->func[func],
					     ((u8 *) (pkt->data)),
					     addr, pktlen);
	}

	return err_ret;
}

/*
 * This function takes a queue of packets. The packets on the queue
 * are assumed to be properly aligned by the caller.
 */
int
brcmf_sdioh_request_chain(struct brcmf_sdio_dev *sdiodev, uint fix_inc,
			  uint write, uint func, uint addr,
			  struct sk_buff_head *pktq)
{
	bool fifo = (fix_inc == SDIOH_DATA_FIX);
	u32 SGCount = 0;
	int err_ret = 0;

	struct sk_buff *pkt;

	brcmf_dbg(TRACE, "Enter\n");

	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_chain_wait);
	if (brcmf_pm_resume_error(sdiodev))
		return -EIO;

	/* Claim host controller */
	sdio_claim_host(sdiodev->func[func]);

	skb_queue_walk(pktq, pkt) {
		uint pkt_len = pkt->len;
		pkt_len += 3;
		pkt_len &= 0xFFFFFFFC;

		err_ret = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
						   addr, pkt, pkt_len);
		if (err_ret) {
			brcmf_dbg(ERROR, "%s FAILED %p[%d], addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
				  write ? "TX" : "RX", pkt, SGCount, addr,
				  pkt_len, err_ret);
		} else {
			brcmf_dbg(TRACE, "%s xfr'd %p[%d], addr=0x%05x, len=%d\n",
				  write ? "TX" : "RX", pkt, SGCount, addr,
				  pkt_len);
		}
		if (!fifo)
			addr += pkt_len;

		SGCount++;
	}

	/* Release host controller */
	sdio_release_host(sdiodev->func[func]);

	brcmf_dbg(TRACE, "Exit\n");
	return err_ret;
}

/*
 * This function takes a single DMA-able packet.
 */
int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
			       uint fix_inc, uint write, uint func, uint addr,
			       struct sk_buff *pkt)
{
	int status;
	uint pkt_len;
	bool fifo = (fix_inc == SDIOH_DATA_FIX);

	brcmf_dbg(TRACE, "Enter\n");

	if (pkt == NULL)
		return -EINVAL;
	pkt_len = pkt->len;

	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
	if (brcmf_pm_resume_error(sdiodev))
		return -EIO;

	/* Claim host controller */
	sdio_claim_host(sdiodev->func[func]);

	pkt_len += 3;
	pkt_len &= (uint)~3;

	status = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
					   addr, pkt, pkt_len);
	if (status) {
		brcmf_dbg(ERROR, "%s FAILED %p, addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
			  write ? "TX" : "RX", pkt, addr, pkt_len, status);
	} else {
		brcmf_dbg(TRACE, "%s xfr'd %p, addr=0x%05x, len=%d\n",
			  write ? "TX" : "RX", pkt, addr, pkt_len);
	}

	/* Release host controller */
	sdio_release_host(sdiodev->func[func]);

	return status;
}

/* Read client card reg */
static int
brcmf_sdioh_card_regread(struct brcmf_sdio_dev *sdiodev, int func, u32 regaddr,
			 int regsize, u32 *data)
{

	if ((func == 0) || (regsize == 1)) {
		u8 temp = 0;

		brcmf_sdioh_request_byte(sdiodev, SDIOH_READ, func, regaddr,
					 &temp);
		*data = temp;
		*data &= 0xff;
		brcmf_dbg(DATA, "byte read data=0x%02x\n", *data);
	} else {
		brcmf_sdioh_request_word(sdiodev, SDIOH_READ, func, regaddr,
					 data, regsize);
		if (regsize == 2)
			*data &= 0xffff;

		brcmf_dbg(DATA, "word read data=0x%08x\n", *data);
	}

	return SUCCESS;
}

static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
{
	/* read 24 bits and return valid 17 bit addr */
	int i;
	u32 scratch, regdata;
	__le32 scratch_le;
	u8 *ptr = (u8 *)&scratch_le;

	for (i = 0; i < 3; i++) {
		if ((brcmf_sdioh_card_regread(sdiodev, 0, regaddr, 1,
				&regdata)) != SUCCESS)
			brcmf_dbg(ERROR, "Can't read!\n");

		*ptr++ = (u8) regdata;
		regaddr++;
	}

	/* Only the lower 17-bits are valid */
	scratch = le32_to_cpu(scratch_le);
	scratch &= 0x0001FFFF;
	return scratch;
}

static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
{
	int err_ret;
	u32 fbraddr;
	u8 func;

	brcmf_dbg(TRACE, "\n");

	/* Get the Card's common CIS address */
	sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
							   SDIO_CCCR_CIS);
	brcmf_dbg(INFO, "Card's Common CIS Ptr = 0x%x\n",
		  sdiodev->func_cis_ptr[0]);

	/* Get the Card's function CIS (for each function) */
	for (fbraddr = SDIO_FBR_BASE(1), func = 1;
	     func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
		sdiodev->func_cis_ptr[func] =
		    brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
		brcmf_dbg(INFO, "Function %d CIS Ptr = 0x%x\n",
			  func, sdiodev->func_cis_ptr[func]);
	}

	/* Enable Function 1 */
	sdio_claim_host(sdiodev->func[1]);
	err_ret = sdio_enable_func(sdiodev->func[1]);
	sdio_release_host(sdiodev->func[1]);
	if (err_ret)
		brcmf_dbg(ERROR, "Failed to enable F1 Err: 0x%08x\n", err_ret);

	return false;
}

/*
 *	Public entry points & extern's
 */
int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
{
	int err_ret = 0;

	brcmf_dbg(TRACE, "\n");

	sdiodev->num_funcs = 2;

	sdio_claim_host(sdiodev->func[1]);
	err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
	sdio_release_host(sdiodev->func[1]);
	if (err_ret) {
		brcmf_dbg(ERROR, "Failed to set F1 blocksize\n");
		goto out;
	}

	sdio_claim_host(sdiodev->func[2]);
	err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
	sdio_release_host(sdiodev->func[2]);
	if (err_ret) {
		brcmf_dbg(ERROR, "Failed to set F2 blocksize\n");
		goto out;
	}

	brcmf_sdioh_enablefuncs(sdiodev);

out:
	brcmf_dbg(TRACE, "Done\n");
	return err_ret;
}

void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
{
	brcmf_dbg(TRACE, "\n");

	/* Disable Function 2 */
	sdio_claim_host(sdiodev->func[2]);
	sdio_disable_func(sdiodev->func[2]);
	sdio_release_host(sdiodev->func[2]);

	/* Disable Function 1 */
	sdio_claim_host(sdiodev->func[1]);
	sdio_disable_func(sdiodev->func[1]);
	sdio_release_host(sdiodev->func[1]);

}

#ifdef CONFIG_BRCMFMAC_SDIO_OOB
static int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
{
	struct brcmf_sdio_oobirq *oobirq_entry;

	if (list_empty(&oobirq_lh)) {
		brcmf_dbg(ERROR, "no valid oob irq resource\n");
		return -ENXIO;
	}

	oobirq_entry = list_first_entry(&oobirq_lh, struct brcmf_sdio_oobirq,
					list);

	sdiodev->irq = oobirq_entry->irq;
	sdiodev->irq_flags = oobirq_entry->flags;
	list_del(&oobirq_entry->list);
	kfree(oobirq_entry);

	return 0;
}
#else
static inline int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
{
	return 0;
}
#endif		/* CONFIG_BRCMFMAC_SDIO_OOB */

static int brcmf_ops_sdio_probe(struct sdio_func *func,
			      const struct sdio_device_id *id)
{
	int ret = 0;
	struct brcmf_sdio_dev *sdiodev;
	struct brcmf_bus *bus_if;

	brcmf_dbg(TRACE, "Enter\n");
	brcmf_dbg(TRACE, "func->class=%x\n", func->class);
	brcmf_dbg(TRACE, "sdio_vendor: 0x%04x\n", func->vendor);
	brcmf_dbg(TRACE, "sdio_device: 0x%04x\n", func->device);
	brcmf_dbg(TRACE, "Function#: 0x%04x\n", func->num);

	if (func->num == 1) {
		if (dev_get_drvdata(&func->card->dev)) {
			brcmf_dbg(ERROR, "card private drvdata occupied\n");
			return -ENXIO;
		}
		bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
		if (!bus_if)
			return -ENOMEM;
		sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
		if (!sdiodev) {
			kfree(bus_if);
			return -ENOMEM;
		}
		sdiodev->func[0] = func;
		sdiodev->func[1] = func;
		sdiodev->bus_if = bus_if;
		bus_if->bus_priv.sdio = sdiodev;
		bus_if->type = SDIO_BUS;
		bus_if->align = BRCMF_SDALIGN;
		dev_set_drvdata(&func->card->dev, sdiodev);

		atomic_set(&sdiodev->suspend, false);
		init_waitqueue_head(&sdiodev->request_byte_wait);
		init_waitqueue_head(&sdiodev->request_word_wait);
		init_waitqueue_head(&sdiodev->request_chain_wait);
		init_waitqueue_head(&sdiodev->request_buffer_wait);
	}

	if (func->num == 2) {
		sdiodev = dev_get_drvdata(&func->card->dev);
		if ((!sdiodev) || (sdiodev->func[1]->card != func->card))
			return -ENODEV;

		ret = brcmf_sdio_getintrcfg(sdiodev);
		if (ret)
			return ret;
		sdiodev->func[2] = func;

		bus_if = sdiodev->bus_if;
		sdiodev->dev = &func->dev;
		dev_set_drvdata(&func->dev, bus_if);

		brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_probe...\n");
		ret = brcmf_sdio_probe(sdiodev);
	}

	return ret;
}

static void brcmf_ops_sdio_remove(struct sdio_func *func)
{
	struct brcmf_bus *bus_if;
	struct brcmf_sdio_dev *sdiodev;
	brcmf_dbg(TRACE, "Enter\n");
	brcmf_dbg(INFO, "func->class=%x\n", func->class);
	brcmf_dbg(INFO, "sdio_vendor: 0x%04x\n", func->vendor);
	brcmf_dbg(INFO, "sdio_device: 0x%04x\n", func->device);
	brcmf_dbg(INFO, "Function#: 0x%04x\n", func->num);

	if (func->num == 2) {
		bus_if = dev_get_drvdata(&func->dev);
		sdiodev = bus_if->bus_priv.sdio;
		brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_remove...\n");
		brcmf_sdio_remove(sdiodev);
		dev_set_drvdata(&func->card->dev, NULL);
		dev_set_drvdata(&func->dev, NULL);
		kfree(bus_if);
		kfree(sdiodev);
	}
}

#ifdef CONFIG_PM_SLEEP
static int brcmf_sdio_suspend(struct device *dev)
{
	mmc_pm_flag_t sdio_flags;
	struct sdio_func *func = dev_to_sdio_func(dev);
	struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
	int ret = 0;

	brcmf_dbg(TRACE, "\n");

	atomic_set(&sdiodev->suspend, true);

	sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
	if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
		brcmf_dbg(ERROR, "Host can't keep power while suspended\n");
		return -EINVAL;
	}

	ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
	if (ret) {
		brcmf_dbg(ERROR, "Failed to set pm_flags\n");
		return ret;
	}

	brcmf_sdio_wdtmr_enable(sdiodev, false);

	return ret;
}

static int brcmf_sdio_resume(struct device *dev)
{
	struct sdio_func *func = dev_to_sdio_func(dev);
	struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);

	brcmf_sdio_wdtmr_enable(sdiodev, true);
	atomic_set(&sdiodev->suspend, false);
	return 0;
}

static const struct dev_pm_ops brcmf_sdio_pm_ops = {
	.suspend	= brcmf_sdio_suspend,
	.resume		= brcmf_sdio_resume,
};
#endif	/* CONFIG_PM_SLEEP */

static struct sdio_driver brcmf_sdmmc_driver = {
	.probe = brcmf_ops_sdio_probe,
	.remove = brcmf_ops_sdio_remove,
	.name = "brcmfmac",
	.id_table = brcmf_sdmmc_ids,
#ifdef CONFIG_PM_SLEEP
	.drv = {
		.pm = &brcmf_sdio_pm_ops,
	},
#endif	/* CONFIG_PM_SLEEP */
};

#ifdef CONFIG_BRCMFMAC_SDIO_OOB
static int brcmf_sdio_pd_probe(struct platform_device *pdev)
{
	struct resource *res;
	struct brcmf_sdio_oobirq *oobirq_entry;
	int i, ret;

	INIT_LIST_HEAD(&oobirq_lh);

	for (i = 0; ; i++) {
		res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
		if (!res)
			break;

		oobirq_entry = kzalloc(sizeof(struct brcmf_sdio_oobirq),
				       GFP_KERNEL);
		oobirq_entry->irq = res->start;
		oobirq_entry->flags = res->flags & IRQF_TRIGGER_MASK;
		list_add_tail(&oobirq_entry->list, &oobirq_lh);
	}
	if (i == 0)
		return -ENXIO;

	ret = sdio_register_driver(&brcmf_sdmmc_driver);

	if (ret)
		brcmf_dbg(ERROR, "sdio_register_driver failed: %d\n", ret);

	return ret;
}

static struct platform_driver brcmf_sdio_pd = {
	.probe		= brcmf_sdio_pd_probe,
	.driver		= {
		.name	= "brcmf_sdio_pd"
	}
};

void brcmf_sdio_exit(void)
{
	brcmf_dbg(TRACE, "Enter\n");

	sdio_unregister_driver(&brcmf_sdmmc_driver);

	platform_driver_unregister(&brcmf_sdio_pd);
}

void brcmf_sdio_init(void)
{
	int ret;

	brcmf_dbg(TRACE, "Enter\n");

	ret = platform_driver_register(&brcmf_sdio_pd);

	if (ret)
		brcmf_dbg(ERROR, "platform_driver_register failed: %d\n", ret);
}
#else
void brcmf_sdio_exit(void)
{
	brcmf_dbg(TRACE, "Enter\n");

	sdio_unregister_driver(&brcmf_sdmmc_driver);
}

void brcmf_sdio_init(void)
{
	int ret;

	brcmf_dbg(TRACE, "Enter\n");

	ret = sdio_register_driver(&brcmf_sdmmc_driver);

	if (ret)
		brcmf_dbg(ERROR, "sdio_register_driver failed: %d\n", ret);
}
#endif		/* CONFIG_BRCMFMAC_SDIO_OOB */
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	*/
02f77195 JP	16
	17	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
	18
5b435de0 AS	19	#include <linux/types.h>
	20	#include <linux/netdevice.h>
	21	#include <linux/mmc/sdio.h>
	22	#include <linux/mmc/core.h>
	23	#include <linux/mmc/sdio_func.h>
	24	#include <linux/mmc/sdio_ids.h>
	25	#include <linux/mmc/card.h>
	26	#include <linux/suspend.h>
	27	#include <linux/errno.h>
	28	#include <linux/sched.h> /* request_irq() */
b7a57e76	29	#include <linux/module.h>
ba89bf19	30	#include <linux/platform_device.h>
5b435de0 AS	31	#include <net/cfg80211.h>
	32
	33	#include <defs.h>
	34	#include <brcm_hw_ids.h>
	35	#include <brcmu_utils.h>
	36	#include <brcmu_wifi.h>
	37	#include "sdio_host.h"
5b435de0	38	#include "dhd_dbg.h"
a8a363ac	39	#include "dhd_bus.h"
5b435de0 AS	40
	41	#define SDIO_VENDOR_ID_BROADCOM 0x02d0
	42
	43	#define DMA_ALIGN_MASK 0x03
	44
	45	#define SDIO_DEVICE_ID_BROADCOM_4329 0x4329
ce2d7d7e	46	#define SDIO_DEVICE_ID_BROADCOM_4330 0x4330
5b435de0 AS	47
	48	#define SDIO_FUNC1_BLOCKSIZE 64
	49	#define SDIO_FUNC2_BLOCKSIZE 512
	50
	51	/* devices we support, null terminated */
	52	static const struct sdio_device_id brcmf_sdmmc_ids[] = {
	53	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
ce2d7d7e	54	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
5b435de0 AS	55	{ /* end: all zeroes */ },
	56	};
	57	MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
	58
ba89bf19 FL	59	#ifdef CONFIG_BRCMFMAC_SDIO_OOB
	60	static struct list_head oobirq_lh;
	61	struct brcmf_sdio_oobirq {
	62	unsigned int irq;
	63	unsigned long flags;
	64	struct list_head list;
	65	};
	66	#endif /* CONFIG_BRCMFMAC_SDIO_OOB */
	67
5b435de0 AS	68	static bool
	69	brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
	70	{
	71	bool is_err = false;
	72	#ifdef CONFIG_PM_SLEEP
	73	is_err = atomic_read(&sdiodev->suspend);
	74	#endif
	75	return is_err;
	76	}
	77
	78	static void
	79	brcmf_pm_resume_wait(struct brcmf_sdio_dev sdiodev, wait_queue_head_t wq)
	80	{
	81	#ifdef CONFIG_PM_SLEEP
	82	int retry = 0;
	83	while (atomic_read(&sdiodev->suspend) && retry++ != 30)
	84	wait_event_timeout(*wq, false, HZ/100);
	85	#endif
	86	}
	87
	88	static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
	89	uint regaddr, u8 *byte)
	90	{
	91	struct sdio_func *sdfunc = sdiodev->func[0];
	92	int err_ret;
	93
	94	/*
	95	* Can only directly write to some F0 registers.
	96	* Handle F2 enable/disable and Abort command
	97	* as a special case.
	98	*/
	99	if (regaddr == SDIO_CCCR_IOEx) {
	100	sdfunc = sdiodev->func[2];
	101	if (sdfunc) {
	102	sdio_claim_host(sdfunc);
	103	if (*byte & SDIO_FUNC_ENABLE_2) {
	104	/* Enable Function 2 */
	105	err_ret = sdio_enable_func(sdfunc);
	106	if (err_ret)
	107	brcmf_dbg(ERROR,
	108	"enable F2 failed:%d\n",
	109	err_ret);
	110	} else {
	111	/* Disable Function 2 */
	112	err_ret = sdio_disable_func(sdfunc);
	113	if (err_ret)
	114	brcmf_dbg(ERROR,
	115	"Disable F2 failed:%d\n",
	116	err_ret);
	117	}
	118	sdio_release_host(sdfunc);
	119	}
ba89bf19 FL	120	} else if ((regaddr == SDIO_CCCR_ABORT) \|\|
ba89bf19 FL	121	(regaddr == SDIO_CCCR_IENx)) {
1cc26990 FL	122	sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func),
	123	GFP_KERNEL);
	124	if (!sdfunc)
	125	return -ENOMEM;
	126	sdfunc->num = 0;
5b435de0 AS	127	sdio_claim_host(sdfunc);
	128	sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
	129	sdio_release_host(sdfunc);
1cc26990	130	kfree(sdfunc);
5b435de0 AS	131	} else if (regaddr < 0xF0) {
	132	brcmf_dbg(ERROR, "F0 Wr:0x%02x: write disallowed\n", regaddr);
	133	err_ret = -EPERM;
	134	} else {
	135	sdio_claim_host(sdfunc);
	136	sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
	137	sdio_release_host(sdfunc);
	138	}
	139
	140	return err_ret;
	141	}
	142
	143	int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
	144	uint regaddr, u8 *byte)
	145	{
	146	int err_ret;
	147
	148	brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
	149
	150	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
	151	if (brcmf_pm_resume_error(sdiodev))
	152	return -EIO;
	153
	154	if (rw && func == 0) {
	155	/* handle F0 separately */
	156	err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
	157	} else {
	158	sdio_claim_host(sdiodev->func[func]);
	159	if (rw) /* CMD52 Write */
	160	sdio_writeb(sdiodev->func[func], *byte, regaddr,
	161	&err_ret);
	162	else if (func == 0) {
	163	*byte = sdio_f0_readb(sdiodev->func[func], regaddr,
	164	&err_ret);
	165	} else {
	166	*byte = sdio_readb(sdiodev->func[func], regaddr,
	167	&err_ret);
	168	}
	169	sdio_release_host(sdiodev->func[func]);
	170	}
	171
	172	if (err_ret)
	173	brcmf_dbg(ERROR, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
	174	rw ? "write" : "read", func, regaddr, *byte, err_ret);
	175
	176	return err_ret;
	177	}
	178
	179	int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
	180	uint rw, uint func, uint addr, u32 *word,
	181	uint nbytes)
	182	{
	183	int err_ret = -EIO;
	184
	185	if (func == 0) {
	186	brcmf_dbg(ERROR, "Only CMD52 allowed to F0\n");
	187	return -EINVAL;
	188	}
	189
	190	brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
	191	rw, func, addr, nbytes);
	192
	193	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
	194	if (brcmf_pm_resume_error(sdiodev))
195	return -EIO;
196	/* Claim host controller */
197	sdio_claim_host(sdiodev->func[func]);
198
199	if (rw) { /* CMD52 Write */
200	if (nbytes == 4)
201	sdio_writel(sdiodev->func[func], *word, addr,
202	&err_ret);
203	else if (nbytes == 2)
204	sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
205	addr, &err_ret);
206	else
207	brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
208	} else { /* CMD52 Read */
209	if (nbytes == 4)
210	*word = sdio_readl(sdiodev->func[func], addr, &err_ret);
211	else if (nbytes == 2)
212	*word = sdio_readw(sdiodev->func[func], addr,
213	&err_ret) & 0xFFFF;
214	else
215	brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
216	}
217
218	/* Release host controller */
219	sdio_release_host(sdiodev->func[func]);
220
221	if (err_ret)
222	brcmf_dbg(ERROR, "Failed to %s word, Err: 0x%08x\n",
223	rw ? "write" : "read", err_ret);
224
225	return err_ret;
226	}
227
5adfeb63 AS	228	/* precondition: host controller is claimed */
	229	static int
	230	brcmf_sdioh_request_data(struct brcmf_sdio_dev *sdiodev, uint write, bool fifo,
	231	uint func, uint addr, struct sk_buff *pkt, uint pktlen)
	232	{
	233	int err_ret = 0;
	234
	235	if ((write) && (!fifo)) {
	236	err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
	237	((u8 *) (pkt->data)), pktlen);
	238	} else if (write) {
	239	err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
	240	((u8 *) (pkt->data)), pktlen);
	241	} else if (fifo) {
	242	err_ret = sdio_readsb(sdiodev->func[func],
	243	((u8 *) (pkt->data)), addr, pktlen);
	244	} else {
	245	err_ret = sdio_memcpy_fromio(sdiodev->func[func],
	246	((u8 *) (pkt->data)),
	247	addr, pktlen);
	248	}
	249
	250	return err_ret;
	251	}
	252
a52dd17d AS	253	/*
	254	* This function takes a queue of packets. The packets on the queue
	255	* are assumed to be properly aligned by the caller.
	256	*/
5adfeb63 AS	257	int
	258	brcmf_sdioh_request_chain(struct brcmf_sdio_dev *sdiodev, uint fix_inc,
	259	uint write, uint func, uint addr,
	260	struct sk_buff_head *pktq)
5b435de0 AS	261	{
	262	bool fifo = (fix_inc == SDIOH_DATA_FIX);
	263	u32 SGCount = 0;
	264	int err_ret = 0;
	265
5adfeb63	266	struct sk_buff *pkt;
5b435de0 AS	267
	268	brcmf_dbg(TRACE, "Enter\n");
	269
a52dd17d	270	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_chain_wait);
5b435de0 AS	271	if (brcmf_pm_resume_error(sdiodev))
	272	return -EIO;
	273
	274	/* Claim host controller */
	275	sdio_claim_host(sdiodev->func[func]);
5adfeb63 AS	276
	277	skb_queue_walk(pktq, pkt) {
	278	uint pkt_len = pkt->len;
5b435de0 AS	279	pkt_len += 3;
	280	pkt_len &= 0xFFFFFFFC;
	281
5adfeb63 AS	282	err_ret = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
5adfeb63 AS	283	addr, pkt, pkt_len);
5b435de0 AS	284	if (err_ret) {
5b435de0 AS	285	brcmf_dbg(ERROR, "%s FAILED %p[%d], addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
5adfeb63	286	write ? "TX" : "RX", pkt, SGCount, addr,
5b435de0 AS	287	pkt_len, err_ret);
	288	} else {
	289	brcmf_dbg(TRACE, "%s xfr'd %p[%d], addr=0x%05x, len=%d\n",
5adfeb63	290	write ? "TX" : "RX", pkt, SGCount, addr,
5b435de0 AS	291	pkt_len);
5b435de0 AS	292	}
5b435de0 AS	293	if (!fifo)
5b435de0 AS	294	addr += pkt_len;
5b435de0	295
5adfeb63	296	SGCount++;
5b435de0 AS	297	}
	298
	299	/* Release host controller */
	300	sdio_release_host(sdiodev->func[func]);
	301
	302	brcmf_dbg(TRACE, "Exit\n");
	303	return err_ret;
	304	}
	305
	306	/*
8054321b	307	* This function takes a single DMA-able packet.
5b435de0 AS	308	*/
	309	int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
	310	uint fix_inc, uint write, uint func, uint addr,
4c6e869d	311	struct sk_buff *pkt)
5b435de0	312	{
4c6e869d	313	int status;
2315992c	314	uint pkt_len;
8054321b	315	bool fifo = (fix_inc == SDIOH_DATA_FIX);
5b435de0 AS	316
	317	brcmf_dbg(TRACE, "Enter\n");
	318
4c6e869d AS	319	if (pkt == NULL)
4c6e869d AS	320	return -EINVAL;
2315992c	321	pkt_len = pkt->len;
4c6e869d	322
5b435de0 AS	323	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
	324	if (brcmf_pm_resume_error(sdiodev))
	325	return -EIO;
5b435de0	326
8054321b AS	327	/* Claim host controller */
8054321b AS	328	sdio_claim_host(sdiodev->func[func]);
5b435de0	329
8054321b AS	330	pkt_len += 3;
8054321b AS	331	pkt_len &= (uint)~3;
5b435de0	332
8054321b AS	333	status = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
	334	addr, pkt, pkt_len);
	335	if (status) {
	336	brcmf_dbg(ERROR, "%s FAILED %p, addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
	337	write ? "TX" : "RX", pkt, addr, pkt_len, status);
	338	} else {
	339	brcmf_dbg(TRACE, "%s xfr'd %p, addr=0x%05x, len=%d\n",
	340	write ? "TX" : "RX", pkt, addr, pkt_len);
5b435de0 AS	341	}
5b435de0 AS	342
8054321b AS	343	/* Release host controller */
	344	sdio_release_host(sdiodev->func[func]);
	345
4c6e869d	346	return status;
5b435de0 AS	347	}
	348
	349	/* Read client card reg */
	350	static int
	351	brcmf_sdioh_card_regread(struct brcmf_sdio_dev *sdiodev, int func, u32 regaddr,
	352	int regsize, u32 *data)
	353	{
	354
	355	if ((func == 0) \|\| (regsize == 1)) {
	356	u8 temp = 0;
	357
	358	brcmf_sdioh_request_byte(sdiodev, SDIOH_READ, func, regaddr,
	359	&temp);
	360	*data = temp;
	361	*data &= 0xff;
	362	brcmf_dbg(DATA, "byte read data=0x%02x\n", *data);
	363	} else {
	364	brcmf_sdioh_request_word(sdiodev, SDIOH_READ, func, regaddr,
	365	data, regsize);
	366	if (regsize == 2)
	367	*data &= 0xffff;
	368
	369	brcmf_dbg(DATA, "word read data=0x%08x\n", *data);
	370	}
	371
	372	return SUCCESS;
	373	}
	374
	375	static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
	376	{
	377	/* read 24 bits and return valid 17 bit addr */
	378	int i;
	379	u32 scratch, regdata;
	380	__le32 scratch_le;
	381	u8 ptr = (u8 )&scratch_le;
	382
	383	for (i = 0; i < 3; i++) {
	384	if ((brcmf_sdioh_card_regread(sdiodev, 0, regaddr, 1,
	385	&regdata)) != SUCCESS)
	386	brcmf_dbg(ERROR, "Can't read!\n");
	387
	388	*ptr++ = (u8) regdata;
	389	regaddr++;
	390	}
	391
	392	/* Only the lower 17-bits are valid */
	393	scratch = le32_to_cpu(scratch_le);
	394	scratch &= 0x0001FFFF;
	395	return scratch;
	396	}
	397
	398	static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
	399	{
	400	int err_ret;
	401	u32 fbraddr;
	402	u8 func;
	403
	404	brcmf_dbg(TRACE, "\n");
	405
	406	/* Get the Card's common CIS address */
	407	sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
	408	SDIO_CCCR_CIS);
	409	brcmf_dbg(INFO, "Card's Common CIS Ptr = 0x%x\n",
	410	sdiodev->func_cis_ptr[0]);
411
412	/* Get the Card's function CIS (for each function) */
413	for (fbraddr = SDIO_FBR_BASE(1), func = 1;
414	func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
415	sdiodev->func_cis_ptr[func] =
416	brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
417	brcmf_dbg(INFO, "Function %d CIS Ptr = 0x%x\n",
418	func, sdiodev->func_cis_ptr[func]);
419	}
420
421	/* Enable Function 1 */
422	sdio_claim_host(sdiodev->func[1]);
423	err_ret = sdio_enable_func(sdiodev->func[1]);
424	sdio_release_host(sdiodev->func[1]);
425	if (err_ret)
426	brcmf_dbg(ERROR, "Failed to enable F1 Err: 0x%08x\n", err_ret);
427
428	return false;
429	}
430
431	/*
432	* Public entry points & extern's
433	*/
434	int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
435	{
436	int err_ret = 0;
437
438	brcmf_dbg(TRACE, "\n");
439
440	sdiodev->num_funcs = 2;
441
442	sdio_claim_host(sdiodev->func[1]);
443	err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
444	sdio_release_host(sdiodev->func[1]);
445	if (err_ret) {
446	brcmf_dbg(ERROR, "Failed to set F1 blocksize\n");
447	goto out;
448	}
449
450	sdio_claim_host(sdiodev->func[2]);
451	err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
452	sdio_release_host(sdiodev->func[2]);
453	if (err_ret) {
454	brcmf_dbg(ERROR, "Failed to set F2 blocksize\n");
455	goto out;
456	}
457
458	brcmf_sdioh_enablefuncs(sdiodev);
459
460	out:
461	brcmf_dbg(TRACE, "Done\n");
462	return err_ret;
463	}
464
465	void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
466	{
467	brcmf_dbg(TRACE, "\n");
468
469	/* Disable Function 2 */
470	sdio_claim_host(sdiodev->func[2]);
471	sdio_disable_func(sdiodev->func[2]);
472	sdio_release_host(sdiodev->func[2]);
473
474	/* Disable Function 1 */
475	sdio_claim_host(sdiodev->func[1]);
476	sdio_disable_func(sdiodev->func[1]);
477	sdio_release_host(sdiodev->func[1]);
478
479	}
480
ba89bf19 FL	481	#ifdef CONFIG_BRCMFMAC_SDIO_OOB
	482	static int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
	483	{
	484	struct brcmf_sdio_oobirq *oobirq_entry;
	485
	486	if (list_empty(&oobirq_lh)) {
	487	brcmf_dbg(ERROR, "no valid oob irq resource\n");
	488	return -ENXIO;
	489	}
	490
	491	oobirq_entry = list_first_entry(&oobirq_lh, struct brcmf_sdio_oobirq,
	492	list);
	493
	494	sdiodev->irq = oobirq_entry->irq;
	495	sdiodev->irq_flags = oobirq_entry->flags;
	496	list_del(&oobirq_entry->list);
	497	kfree(oobirq_entry);
	498
	499	return 0;
	500	}
	501	#else
	502	static inline int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
	503	{
	504	return 0;
	505	}
	506	#endif /* CONFIG_BRCMFMAC_SDIO_OOB */
	507
5b435de0 AS	508	static int brcmf_ops_sdio_probe(struct sdio_func *func,
	509	const struct sdio_device_id *id)
	510	{
	511	int ret = 0;
	512	struct brcmf_sdio_dev *sdiodev;
655713be	513	struct brcmf_bus *bus_if;
ba89bf19	514
5b435de0 AS	515	brcmf_dbg(TRACE, "Enter\n");
	516	brcmf_dbg(TRACE, "func->class=%x\n", func->class);
	517	brcmf_dbg(TRACE, "sdio_vendor: 0x%04x\n", func->vendor);
	518	brcmf_dbg(TRACE, "sdio_device: 0x%04x\n", func->device);
	519	brcmf_dbg(TRACE, "Function#: 0x%04x\n", func->num);
	520
	521	if (func->num == 1) {
	522	if (dev_get_drvdata(&func->card->dev)) {
	523	brcmf_dbg(ERROR, "card private drvdata occupied\n");
	524	return -ENXIO;
	525	}
655713be FL	526	bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
	527	if (!bus_if)
	528	return -ENOMEM;
5b435de0	529	sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
ad9547c0 DC	530	if (!sdiodev) {
ad9547c0 DC	531	kfree(bus_if);
5b435de0	532	return -ENOMEM;
ad9547c0	533	}
1cc26990	534	sdiodev->func[0] = func;
5b435de0	535	sdiodev->func[1] = func;
d76d1c8c	536	sdiodev->bus_if = bus_if;
0a332e46	537	bus_if->bus_priv.sdio = sdiodev;
655713be	538	bus_if->type = SDIO_BUS;
6e3c7128	539	bus_if->align = BRCMF_SDALIGN;
d76d1c8c	540	dev_set_drvdata(&func->card->dev, sdiodev);
5b435de0 AS	541
	542	atomic_set(&sdiodev->suspend, false);
	543	init_waitqueue_head(&sdiodev->request_byte_wait);
	544	init_waitqueue_head(&sdiodev->request_word_wait);
a52dd17d	545	init_waitqueue_head(&sdiodev->request_chain_wait);
5b435de0 AS	546	init_waitqueue_head(&sdiodev->request_buffer_wait);
	547	}
	548
	549	if (func->num == 2) {
d76d1c8c	550	sdiodev = dev_get_drvdata(&func->card->dev);
5b435de0 AS	551	if ((!sdiodev) \|\| (sdiodev->func[1]->card != func->card))
5b435de0 AS	552	return -ENODEV;
ba89bf19 FL	553
	554	ret = brcmf_sdio_getintrcfg(sdiodev);
	555	if (ret)
	556	return ret;
5b435de0 AS	557	sdiodev->func[2] = func;
5b435de0 AS	558
d76d1c8c FL	559	bus_if = sdiodev->bus_if;
	560	sdiodev->dev = &func->dev;
	561	dev_set_drvdata(&func->dev, bus_if);
	562
5b435de0 AS	563	brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_probe...\n");
	564	ret = brcmf_sdio_probe(sdiodev);
	565	}
	566
	567	return ret;
	568	}
	569
	570	static void brcmf_ops_sdio_remove(struct sdio_func *func)
	571	{
655713be	572	struct brcmf_bus *bus_if;
5b435de0 AS	573	struct brcmf_sdio_dev *sdiodev;
	574	brcmf_dbg(TRACE, "Enter\n");
	575	brcmf_dbg(INFO, "func->class=%x\n", func->class);
	576	brcmf_dbg(INFO, "sdio_vendor: 0x%04x\n", func->vendor);
	577	brcmf_dbg(INFO, "sdio_device: 0x%04x\n", func->device);
	578	brcmf_dbg(INFO, "Function#: 0x%04x\n", func->num);
	579
	580	if (func->num == 2) {
d76d1c8c	581	bus_if = dev_get_drvdata(&func->dev);
0a332e46	582	sdiodev = bus_if->bus_priv.sdio;
5b435de0 AS	583	brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_remove...\n");
	584	brcmf_sdio_remove(sdiodev);
	585	dev_set_drvdata(&func->card->dev, NULL);
d76d1c8c	586	dev_set_drvdata(&func->dev, NULL);
655713be	587	kfree(bus_if);
5b435de0 AS	588	kfree(sdiodev);
	589	}
	590	}
	591
	592	#ifdef CONFIG_PM_SLEEP
	593	static int brcmf_sdio_suspend(struct device *dev)
	594	{
	595	mmc_pm_flag_t sdio_flags;
5b435de0	596	struct sdio_func *func = dev_to_sdio_func(dev);
d76d1c8c	597	struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
5b435de0 AS	598	int ret = 0;
	599
	600	brcmf_dbg(TRACE, "\n");
	601
5b435de0 AS	602	atomic_set(&sdiodev->suspend, true);
	603
	604	sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
	605	if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
	606	brcmf_dbg(ERROR, "Host can't keep power while suspended\n");
	607	return -EINVAL;
	608	}
	609
	610	ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
	611	if (ret) {
	612	brcmf_dbg(ERROR, "Failed to set pm_flags\n");
	613	return ret;
	614	}
	615
	616	brcmf_sdio_wdtmr_enable(sdiodev, false);
	617
	618	return ret;
	619	}
	620
	621	static int brcmf_sdio_resume(struct device *dev)
	622	{
5b435de0	623	struct sdio_func *func = dev_to_sdio_func(dev);
d76d1c8c	624	struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
5b435de0	625
5b435de0 AS	626	brcmf_sdio_wdtmr_enable(sdiodev, true);
	627	atomic_set(&sdiodev->suspend, false);
	628	return 0;
	629	}
	630
	631	static const struct dev_pm_ops brcmf_sdio_pm_ops = {
	632	.suspend = brcmf_sdio_suspend,
	633	.resume = brcmf_sdio_resume,
	634	};
	635	#endif /* CONFIG_PM_SLEEP */
	636
	637	static struct sdio_driver brcmf_sdmmc_driver = {
	638	.probe = brcmf_ops_sdio_probe,
	639	.remove = brcmf_ops_sdio_remove,
	640	.name = "brcmfmac",
	641	.id_table = brcmf_sdmmc_ids,
	642	#ifdef CONFIG_PM_SLEEP
	643	.drv = {
	644	.pm = &brcmf_sdio_pm_ops,
	645	},
	646	#endif /* CONFIG_PM_SLEEP */
	647	};
	648
ba89bf19 FL	649	#ifdef CONFIG_BRCMFMAC_SDIO_OOB
	650	static int brcmf_sdio_pd_probe(struct platform_device *pdev)
	651	{
	652	struct resource *res;
	653	struct brcmf_sdio_oobirq *oobirq_entry;
	654	int i, ret;
	655
	656	INIT_LIST_HEAD(&oobirq_lh);
	657
	658	for (i = 0; ; i++) {
	659	res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
	660	if (!res)
	661	break;
	662
	663	oobirq_entry = kzalloc(sizeof(struct brcmf_sdio_oobirq),
	664	GFP_KERNEL);
	665	oobirq_entry->irq = res->start;
	666	oobirq_entry->flags = res->flags & IRQF_TRIGGER_MASK;
	667	list_add_tail(&oobirq_entry->list, &oobirq_lh);
	668	}
	669	if (i == 0)
	670	return -ENXIO;
	671
	672	ret = sdio_register_driver(&brcmf_sdmmc_driver);
	673
	674	if (ret)
	675	brcmf_dbg(ERROR, "sdio_register_driver failed: %d\n", ret);
	676
	677	return ret;
	678	}
	679
	680	static struct platform_driver brcmf_sdio_pd = {
	681	.probe = brcmf_sdio_pd_probe,
	682	.driver = {
	683	.name = "brcmf_sdio_pd"
	684	}
	685	};
	686
	687	void brcmf_sdio_exit(void)
	688	{
	689	brcmf_dbg(TRACE, "Enter\n");
	690
	691	sdio_unregister_driver(&brcmf_sdmmc_driver);
	692
	693	platform_driver_unregister(&brcmf_sdio_pd);
	694	}
	695
	696	void brcmf_sdio_init(void)
	697	{
	698	int ret;
	699
	700	brcmf_dbg(TRACE, "Enter\n");
	701
	702	ret = platform_driver_register(&brcmf_sdio_pd);
	703
	704	if (ret)
	705	brcmf_dbg(ERROR, "platform_driver_register failed: %d\n", ret);
	706	}
	707	#else
f3d7cdc3	708	void brcmf_sdio_exit(void)
5b435de0 AS	709	{
	710	brcmf_dbg(TRACE, "Enter\n");
	711
3392c888	712	sdio_unregister_driver(&brcmf_sdmmc_driver);
5b435de0 AS	713	}
5b435de0 AS	714
549040ab	715	void brcmf_sdio_init(void)
5b435de0	716	{
3392c888 FL	717	int ret;
3392c888 FL	718
5b435de0 AS	719	brcmf_dbg(TRACE, "Enter\n");
5b435de0 AS	720
3392c888 FL	721	ret = sdio_register_driver(&brcmf_sdmmc_driver);
	722
	723	if (ret)
	724	brcmf_dbg(ERROR, "sdio_register_driver failed: %d\n", ret);
5b435de0	725	}
ba89bf19	726	#endif /* CONFIG_BRCMFMAC_SDIO_OOB */