Merge branch 'perf/urgent' into perf/core

Merge reason: queue up dependent patch, update to -rc4

Signed-off-by: Ingo Molnar <mingo@elte.hu>

12 files changed, 338 insertions, 142 deletions

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 85f0e8cd875..1f552c6e757 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -85,7 +85,14 @@ static void mmc_blk_put(struct mmc_blk_data *md)
 	mutex_lock(&open_lock);
 	md->usage--;
 	if (md->usage == 0) {
+		int devmaj = MAJOR(disk_devt(md->disk));
 		int devidx = MINOR(disk_devt(md->disk)) >> MMC_SHIFT;
+
+		if (!devmaj)
+			devidx = md->disk->first_minor >> MMC_SHIFT;
+
+		blk_cleanup_queue(md->queue.queue);
+
 		__clear_bit(devidx, dev_use);
 
 		put_disk(md->disk);
@@ -613,6 +620,7 @@ static int mmc_blk_probe(struct mmc_card *card)
 	return 0;
 
  out:
+	mmc_cleanup_queue(&md->queue);
 	mmc_blk_put(md);
 
 	return err;
diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c
index 49e582356c6..c5a7a855f4b 100644
--- a/drivers/mmc/card/queue.c
+++ b/drivers/mmc/card/queue.c
@@ -90,9 +90,10 @@ static void mmc_request(struct request_queue *q)
 	struct request *req;
 
 	if (!mq) {
-		printk(KERN_ERR "MMC: killing requests for dead queue\n");
-		while ((req = blk_fetch_request(q)) != NULL)
+		while ((req = blk_fetch_request(q)) != NULL) {
+			req->cmd_flags |= REQ_QUIET;
 			__blk_end_request_all(req, -EIO);
+		}
 		return;
 	}
 
@@ -223,17 +224,18 @@ void mmc_cleanup_queue(struct mmc_queue *mq)
 	struct request_queue *q = mq->queue;
 	unsigned long flags;
 
-	/* Mark that we should start throwing out stragglers */
-	spin_lock_irqsave(q->queue_lock, flags);
-	q->queuedata = NULL;
-	spin_unlock_irqrestore(q->queue_lock, flags);
-
 	/* Make sure the queue isn't suspended, as that will deadlock */
 	mmc_queue_resume(mq);
 
 	/* Then terminate our worker thread */
 	kthread_stop(mq->thread);
 
+	/* Empty the queue */
+	spin_lock_irqsave(q->queue_lock, flags);
+	q->queuedata = NULL;
+	blk_start_queue(q);
+	spin_unlock_irqrestore(q->queue_lock, flags);
+
  	if (mq->bounce_sg)
  		kfree(mq->bounce_sg);
  	mq->bounce_sg = NULL;
@@ -245,8 +247,6 @@ void mmc_cleanup_queue(struct mmc_queue *mq)
 		kfree(mq->bounce_buf);
 	mq->bounce_buf = NULL;
 
-	blk_cleanup_queue(mq->queue);
-
 	mq->card = NULL;
 }
 EXPORT_SYMBOL(mmc_cleanup_queue);
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index c11189446a1..0eac6c81490 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -207,7 +207,7 @@ static int mmc_read_ext_csd(struct mmc_card *card)
 	}
 
 	card->ext_csd.rev = ext_csd[EXT_CSD_REV];
-	if (card->ext_csd.rev > 3) {
+	if (card->ext_csd.rev > 5) {
 		printk(KERN_ERR "%s: unrecognised EXT_CSD structure "
 			"version %d\n", mmc_hostname(card->host),
 			card->ext_csd.rev);
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index cdb845b68ab..06b64085a35 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -516,7 +516,8 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr)
 	 * The number of functions on the card is encoded inside
 	 * the ocr.
 	 */
-	card->sdio_funcs = funcs = (ocr & 0x70000000) >> 28;
+	funcs = (ocr & 0x70000000) >> 28;
+	card->sdio_funcs = 0;
 
 	/*
 	 * If needed, disconnect card detection pull-up resistor.
@@ -528,7 +529,7 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr)
 	/*
 	 * Initialize (but don't add) all present functions.
 	 */
-	for (i = 0;i < funcs;i++) {
+	for (i = 0; i < funcs; i++, card->sdio_funcs++) {
 		err = sdio_init_func(host->card, i + 1);
 		if (err)
 			goto remove;
diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c
index d37464e296a..9e060c87e64 100644
--- a/drivers/mmc/core/sdio_bus.c
+++ b/drivers/mmc/core/sdio_bus.c
@@ -248,12 +248,15 @@ int sdio_add_func(struct sdio_func *func)
 /*
  * Unregister a SDIO function with the driver model, and
  * (eventually) free it.
+ * This function can be called through error paths where sdio_add_func() was
+ * never executed (because a failure occurred at an earlier point).
  */
 void sdio_remove_func(struct sdio_func *func)
 {
-	if (sdio_func_present(func))
-		device_del(&func->dev);
+	if (!sdio_func_present(func))
+		return;
 
+	device_del(&func->dev);
 	put_device(&func->dev);
 }
 
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 9d405b18178..ce1d28884e2 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -44,6 +44,19 @@ config MMC_SDHCI_IO_ACCESSORS
 	  This is silent Kconfig symbol that is selected by the drivers that
 	  need to overwrite SDHCI IO memory accessors.
 
+config MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER
+	bool
+	select MMC_SDHCI_IO_ACCESSORS
+	help
+	  This option is selected by drivers running on big endian hosts
+	  and performing I/O to a SDHCI controller through a bus that
+	  implements a hardware byte swapper using a 32-bit datum.
+	  This endian mapping mode is called "data invariance" and
+	  has the effect of scrambling the addresses and formats of data
+	  accessed in sizes other than the datum size.
+
+	  This is the case for the Freescale eSDHC and Nintendo Wii SDHCI.
+
 config MMC_SDHCI_PCI
 	tristate "SDHCI support on PCI bus"
 	depends on MMC_SDHCI && PCI
@@ -75,11 +88,29 @@ config MMC_RICOH_MMC
 config MMC_SDHCI_OF
 	tristate "SDHCI support on OpenFirmware platforms"
 	depends on MMC_SDHCI && PPC_OF
-	select MMC_SDHCI_IO_ACCESSORS
 	help
 	  This selects the OF support for Secure Digital Host Controller
-	  Interfaces. So far, only the Freescale eSDHC controller is known
-	  to exist on OF platforms.
+	  Interfaces.
+
+	  If unsure, say N.
+
+config MMC_SDHCI_OF_ESDHC
+	bool "SDHCI OF support for the Freescale eSDHC controller"
+	depends on MMC_SDHCI_OF
+	select MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER
+	help
+	  This selects the Freescale eSDHC controller support.
+
+	  If unsure, say N.
+
+config MMC_SDHCI_OF_HLWD
+	bool "SDHCI OF support for the Nintendo Wii SDHCI controllers"
+	depends on MMC_SDHCI_OF
+	select MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER
+	help
+	  This selects the Secure Digital Host Controller Interface (SDHCI)
+	  found in the "Hollywood" chipset of the Nintendo Wii video game
+	  console.
 
 	  If unsure, say N.
 
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index ded4d8cdd9d..3d253dd4240 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -13,7 +13,6 @@ obj-$(CONFIG_MMC_MXC)		+= mxcmmc.o
 obj-$(CONFIG_MMC_SDHCI)		+= sdhci.o
 obj-$(CONFIG_MMC_SDHCI_PCI)	+= sdhci-pci.o
 obj-$(CONFIG_MMC_RICOH_MMC)	+= ricoh_mmc.o
-obj-$(CONFIG_MMC_SDHCI_OF)	+= sdhci-of.o
 obj-$(CONFIG_MMC_SDHCI_PLTFM)	+= sdhci-pltfm.o
 obj-$(CONFIG_MMC_SDHCI_S3C)	+= sdhci-s3c.o
 obj-$(CONFIG_MMC_WBSD)		+= wbsd.o
@@ -37,6 +36,11 @@ obj-$(CONFIG_MMC_CB710)	+= cb710-mmc.o
 obj-$(CONFIG_MMC_VIA_SDMMC)	+= via-sdmmc.o
 obj-$(CONFIG_SDH_BFIN)		+= bfin_sdh.o
 
+obj-$(CONFIG_MMC_SDHCI_OF)	+= sdhci-of.o
+sdhci-of-y				:= sdhci-of-core.o
+sdhci-of-$(CONFIG_MMC_SDHCI_OF_ESDHC)	+= sdhci-of-esdhc.o
+sdhci-of-$(CONFIG_MMC_SDHCI_OF_HLWD)	+= sdhci-of-hlwd.o
+
 ifeq ($(CONFIG_CB710_DEBUG),y)
 	CFLAGS-cb710-mmc	+= -DDEBUG
 endif
diff --git a/drivers/mmc/host/sdhci-of.c b/drivers/mmc/host/sdhci-of-core.c
index 01ab916c280..55e33135edb 100644
--- a/drivers/mmc/host/sdhci-of.c
+++ b/drivers/mmc/host/sdhci-of-core.c
@@ -22,62 +22,37 @@
 #include <linux/of_platform.h>
 #include <linux/mmc/host.h>
 #include <asm/machdep.h>
+#include "sdhci-of.h"
 #include "sdhci.h"
 
-struct sdhci_of_data {
-	unsigned int quirks;
-	struct sdhci_ops ops;
-};
-
-struct sdhci_of_host {
-	unsigned int clock;
-	u16 xfer_mode_shadow;
-};
+#ifdef CONFIG_MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER
 
 /*
- * Ops and quirks for the Freescale eSDHC controller.
+ * These accessors are designed for big endian hosts doing I/O to
+ * little endian controllers incorporating a 32-bit hardware byte swapper.
  */
 
-#define ESDHC_DMA_SYSCTL	0x40c
-#define ESDHC_DMA_SNOOP		0x00000040
-
-#define ESDHC_SYSTEM_CONTROL	0x2c
-#define ESDHC_CLOCK_MASK	0x0000fff0
-#define ESDHC_PREDIV_SHIFT	8
-#define ESDHC_DIVIDER_SHIFT	4
-#define ESDHC_CLOCK_PEREN	0x00000004
-#define ESDHC_CLOCK_HCKEN	0x00000002
-#define ESDHC_CLOCK_IPGEN	0x00000001
-
-#define ESDHC_HOST_CONTROL_RES	0x05
-
-static u32 esdhc_readl(struct sdhci_host *host, int reg)
+u32 sdhci_be32bs_readl(struct sdhci_host *host, int reg)
 {
 	return in_be32(host->ioaddr + reg);
 }
 
-static u16 esdhc_readw(struct sdhci_host *host, int reg)
+u16 sdhci_be32bs_readw(struct sdhci_host *host, int reg)
 {
-	u16 ret;
-
-	if (unlikely(reg == SDHCI_HOST_VERSION))
-		ret = in_be16(host->ioaddr + reg);
-	else
-		ret = in_be16(host->ioaddr + (reg ^ 0x2));
-	return ret;
+	return in_be16(host->ioaddr + (reg ^ 0x2));
 }
 
-static u8 esdhc_readb(struct sdhci_host *host, int reg)
+u8 sdhci_be32bs_readb(struct sdhci_host *host, int reg)
 {
 	return in_8(host->ioaddr + (reg ^ 0x3));
 }
 
-static void esdhc_writel(struct sdhci_host *host, u32 val, int reg)
+void sdhci_be32bs_writel(struct sdhci_host *host, u32 val, int reg)
 {
 	out_be32(host->ioaddr + reg, val);
 }
 
-static void esdhc_writew(struct sdhci_host *host, u16 val, int reg)
+void sdhci_be32bs_writew(struct sdhci_host *host, u16 val, int reg)
 {
 	struct sdhci_of_host *of_host = sdhci_priv(host);
 	int base = reg & ~0x3;
@@ -92,106 +67,21 @@ static void esdhc_writew(struct sdhci_host *host, u16 val, int reg)
 		of_host->xfer_mode_shadow = val;
 		return;
 	case SDHCI_COMMAND:
-		esdhc_writel(host, val << 16 | of_host->xfer_mode_shadow,
-			     SDHCI_TRANSFER_MODE);
+		sdhci_be32bs_writel(host, val << 16 | of_host->xfer_mode_shadow,
+				    SDHCI_TRANSFER_MODE);
 		return;
-	case SDHCI_BLOCK_SIZE:
-		/*
-		 * Two last DMA bits are reserved, and first one is used for
-		 * non-standard blksz of 4096 bytes that we don't support
-		 * yet. So clear the DMA boundary bits.
-		 */
-		val &= ~SDHCI_MAKE_BLKSZ(0x7, 0);
-		/* fall through */
 	}
 	clrsetbits_be32(host->ioaddr + base, 0xffff << shift, val << shift);
 }
 
-static void esdhc_writeb(struct sdhci_host *host, u8 val, int reg)
+void sdhci_be32bs_writeb(struct sdhci_host *host, u8 val, int reg)
 {
 	int base = reg & ~0x3;
 	int shift = (reg & 0x3) * 8;
 
-	/* Prevent SDHCI core from writing reserved bits (e.g. HISPD). */
-	if (reg == SDHCI_HOST_CONTROL)
-		val &= ~ESDHC_HOST_CONTROL_RES;
-
 	clrsetbits_be32(host->ioaddr + base , 0xff << shift, val << shift);
 }
-
-static void esdhc_set_clock(struct sdhci_host *host, unsigned int clock)
-{
-	int pre_div = 2;
-	int div = 1;
-
-	clrbits32(host->ioaddr + ESDHC_SYSTEM_CONTROL, ESDHC_CLOCK_IPGEN |
-		  ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN | ESDHC_CLOCK_MASK);
-
-	if (clock == 0)
-		goto out;
-
-	while (host->max_clk / pre_div / 16 > clock && pre_div < 256)
-		pre_div *= 2;
-
-	while (host->max_clk / pre_div / div > clock && div < 16)
-		div++;
-
-	dev_dbg(mmc_dev(host->mmc), "desired SD clock: %d, actual: %d\n",
-		clock, host->max_clk / pre_div / div);
-
-	pre_div >>= 1;
-	div--;
-
-	setbits32(host->ioaddr + ESDHC_SYSTEM_CONTROL, ESDHC_CLOCK_IPGEN |
-		  ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN |
-		  div << ESDHC_DIVIDER_SHIFT | pre_div << ESDHC_PREDIV_SHIFT);
-	mdelay(100);
-out:
-	host->clock = clock;
-}
-
-static int esdhc_enable_dma(struct sdhci_host *host)
-{
-	setbits32(host->ioaddr + ESDHC_DMA_SYSCTL, ESDHC_DMA_SNOOP);
-	return 0;
-}
-
-static unsigned int esdhc_get_max_clock(struct sdhci_host *host)
-{
-	struct sdhci_of_host *of_host = sdhci_priv(host);
-
-	return of_host->clock;
-}
-
-static unsigned int esdhc_get_min_clock(struct sdhci_host *host)
-{
-	struct sdhci_of_host *of_host = sdhci_priv(host);
-
-	return of_host->clock / 256 / 16;
-}
-
-static struct sdhci_of_data sdhci_esdhc = {
-	.quirks = SDHCI_QUIRK_FORCE_BLK_SZ_2048 |
-		  SDHCI_QUIRK_BROKEN_CARD_DETECTION |
-		  SDHCI_QUIRK_NO_BUSY_IRQ |
-		  SDHCI_QUIRK_NONSTANDARD_CLOCK |
-		  SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
-		  SDHCI_QUIRK_PIO_NEEDS_DELAY |
-		  SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET |
-		  SDHCI_QUIRK_NO_CARD_NO_RESET,
-	.ops = {
-		.readl = esdhc_readl,
-		.readw = esdhc_readw,
-		.readb = esdhc_readb,
-		.writel = esdhc_writel,
-		.writew = esdhc_writew,
-		.writeb = esdhc_writeb,
-		.set_clock = esdhc_set_clock,
-		.enable_dma = esdhc_enable_dma,
-		.get_max_clock = esdhc_get_max_clock,
-		.get_min_clock = esdhc_get_min_clock,
-	},
-};
+#endif /* CONFIG_MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER */
 
 #ifdef CONFIG_PM
 
@@ -301,9 +191,14 @@ static int __devexit sdhci_of_remove(struct of_device *ofdev)
 }
 
 static const struct of_device_id sdhci_of_match[] = {
+#ifdef CONFIG_MMC_SDHCI_OF_ESDHC
 	{ .compatible = "fsl,mpc8379-esdhc", .data = &sdhci_esdhc, },
 	{ .compatible = "fsl,mpc8536-esdhc", .data = &sdhci_esdhc, },
 	{ .compatible = "fsl,esdhc", .data = &sdhci_esdhc, },
+#endif
+#ifdef CONFIG_MMC_SDHCI_OF_HLWD
+	{ .compatible = "nintendo,hollywood-sdhci", .data = &sdhci_hlwd, },
+#endif
 	{ .compatible = "generic-sdhci", },
 	{},
 };
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
new file mode 100644
index 00000000000..d5b11a17e64
--- /dev/null
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -0,0 +1,143 @@
+/*
+ * Freescale eSDHC controller driver.
+ *
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ * Copyright (c) 2009 MontaVista Software, Inc.
+ *
+ * Authors: Xiaobo Xie <X.Xie@freescale.com>
+ *	    Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/mmc/host.h>
+#include "sdhci-of.h"
+#include "sdhci.h"
+
+/*
+ * Ops and quirks for the Freescale eSDHC controller.
+ */
+
+#define ESDHC_DMA_SYSCTL	0x40c
+#define ESDHC_DMA_SNOOP		0x00000040
+
+#define ESDHC_SYSTEM_CONTROL	0x2c
+#define ESDHC_CLOCK_MASK	0x0000fff0
+#define ESDHC_PREDIV_SHIFT	8
+#define ESDHC_DIVIDER_SHIFT	4
+#define ESDHC_CLOCK_PEREN	0x00000004
+#define ESDHC_CLOCK_HCKEN	0x00000002
+#define ESDHC_CLOCK_IPGEN	0x00000001
+
+#define ESDHC_HOST_CONTROL_RES	0x05
+
+static u16 esdhc_readw(struct sdhci_host *host, int reg)
+{
+	u16 ret;
+
+	if (unlikely(reg == SDHCI_HOST_VERSION))
+		ret = in_be16(host->ioaddr + reg);
+	else
+		ret = sdhci_be32bs_readw(host, reg);
+	return ret;
+}
+
+static void esdhc_writew(struct sdhci_host *host, u16 val, int reg)
+{
+	if (reg == SDHCI_BLOCK_SIZE) {
+		/*
+		 * Two last DMA bits are reserved, and first one is used for
+		 * non-standard blksz of 4096 bytes that we don't support
+		 * yet. So clear the DMA boundary bits.
+		 */
+		val &= ~SDHCI_MAKE_BLKSZ(0x7, 0);
+	}
+	sdhci_be32bs_writew(host, val, reg);
+}
+
+static void esdhc_writeb(struct sdhci_host *host, u8 val, int reg)
+{
+	/* Prevent SDHCI core from writing reserved bits (e.g. HISPD). */
+	if (reg == SDHCI_HOST_CONTROL)
+		val &= ~ESDHC_HOST_CONTROL_RES;
+	sdhci_be32bs_writeb(host, val, reg);
+}
+
+static void esdhc_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+	int pre_div = 2;
+	int div = 1;
+
+	clrbits32(host->ioaddr + ESDHC_SYSTEM_CONTROL, ESDHC_CLOCK_IPGEN |
+		  ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN | ESDHC_CLOCK_MASK);
+
+	if (clock == 0)
+		goto out;
+
+	while (host->max_clk / pre_div / 16 > clock && pre_div < 256)
+		pre_div *= 2;
+
+	while (host->max_clk / pre_div / div > clock && div < 16)
+		div++;
+
+	dev_dbg(mmc_dev(host->mmc), "desired SD clock: %d, actual: %d\n",
+		clock, host->max_clk / pre_div / div);
+
+	pre_div >>= 1;
+	div--;
+
+	setbits32(host->ioaddr + ESDHC_SYSTEM_CONTROL, ESDHC_CLOCK_IPGEN |
+		  ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN |
+		  div << ESDHC_DIVIDER_SHIFT | pre_div << ESDHC_PREDIV_SHIFT);
+	mdelay(100);
+out:
+	host->clock = clock;
+}
+
+static int esdhc_enable_dma(struct sdhci_host *host)
+{
+	setbits32(host->ioaddr + ESDHC_DMA_SYSCTL, ESDHC_DMA_SNOOP);
+	return 0;
+}
+
+static unsigned int esdhc_get_max_clock(struct sdhci_host *host)
+{
+	struct sdhci_of_host *of_host = sdhci_priv(host);
+
+	return of_host->clock;
+}
+
+static unsigned int esdhc_get_min_clock(struct sdhci_host *host)
+{
+	struct sdhci_of_host *of_host = sdhci_priv(host);
+
+	return of_host->clock / 256 / 16;
+}
+
+struct sdhci_of_data sdhci_esdhc = {
+	.quirks = SDHCI_QUIRK_FORCE_BLK_SZ_2048 |
+		  SDHCI_QUIRK_BROKEN_CARD_DETECTION |
+		  SDHCI_QUIRK_NO_BUSY_IRQ |
+		  SDHCI_QUIRK_NONSTANDARD_CLOCK |
+		  SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
+		  SDHCI_QUIRK_PIO_NEEDS_DELAY |
+		  SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET |
+		  SDHCI_QUIRK_NO_CARD_NO_RESET,
+	.ops = {
+		.readl = sdhci_be32bs_readl,
+		.readw = esdhc_readw,
+		.readb = sdhci_be32bs_readb,
+		.writel = sdhci_be32bs_writel,
+		.writew = esdhc_writew,
+		.writeb = esdhc_writeb,
+		.set_clock = esdhc_set_clock,
+		.enable_dma = esdhc_enable_dma,
+		.get_max_clock = esdhc_get_max_clock,
+		.get_min_clock = esdhc_get_min_clock,
+	},
+};
diff --git a/drivers/mmc/host/sdhci-of-hlwd.c b/drivers/mmc/host/sdhci-of-hlwd.c
new file mode 100644
index 00000000000..35117f3ed75
--- /dev/null
+++ b/drivers/mmc/host/sdhci-of-hlwd.c
@@ -0,0 +1,65 @@
+/*
+ * drivers/mmc/host/sdhci-of-hlwd.c
+ *
+ * Nintendo Wii Secure Digital Host Controller Interface.
+ * Copyright (C) 2009 The GameCube Linux Team
+ * Copyright (C) 2009 Albert Herranz
+ *
+ * Based on sdhci-of-esdhc.c
+ *
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ * Copyright (c) 2009 MontaVista Software, Inc.
+ *
+ * Authors: Xiaobo Xie <X.Xie@freescale.com>
+ *	    Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#include <linux/delay.h>
+#include <linux/mmc/host.h>
+#include "sdhci-of.h"
+#include "sdhci.h"
+
+/*
+ * Ops and quirks for the Nintendo Wii SDHCI controllers.
+ */
+
+/*
+ * We need a small delay after each write, or things go horribly wrong.
+ */
+#define SDHCI_HLWD_WRITE_DELAY	5 /* usecs */
+
+static void sdhci_hlwd_writel(struct sdhci_host *host, u32 val, int reg)
+{
+	sdhci_be32bs_writel(host, val, reg);
+	udelay(SDHCI_HLWD_WRITE_DELAY);
+}
+
+static void sdhci_hlwd_writew(struct sdhci_host *host, u16 val, int reg)
+{
+	sdhci_be32bs_writew(host, val, reg);
+	udelay(SDHCI_HLWD_WRITE_DELAY);
+}
+
+static void sdhci_hlwd_writeb(struct sdhci_host *host, u8 val, int reg)
+{
+	sdhci_be32bs_writeb(host, val, reg);
+	udelay(SDHCI_HLWD_WRITE_DELAY);
+}
+
+struct sdhci_of_data sdhci_hlwd = {
+	.quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
+		  SDHCI_QUIRK_32BIT_DMA_SIZE,
+	.ops = {
+		.readl = sdhci_be32bs_readl,
+		.readw = sdhci_be32bs_readw,
+		.readb = sdhci_be32bs_readb,
+		.writel = sdhci_hlwd_writel,
+		.writew = sdhci_hlwd_writew,
+		.writeb = sdhci_hlwd_writeb,
+	},
+};
diff --git a/drivers/mmc/host/sdhci-of.h b/drivers/mmc/host/sdhci-of.h
new file mode 100644
index 00000000000..ad09ad9915d
--- /dev/null
+++ b/drivers/mmc/host/sdhci-of.h
@@ -0,0 +1,42 @@
+/*
+ * OpenFirmware bindings for Secure Digital Host Controller Interface.
+ *
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ * Copyright (c) 2009 MontaVista Software, Inc.
+ *
+ * Authors: Xiaobo Xie <X.Xie@freescale.com>
+ *	    Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#ifndef __SDHCI_OF_H
+#define __SDHCI_OF_H
+
+#include <linux/types.h>
+#include "sdhci.h"
+
+struct sdhci_of_data {
+	unsigned int quirks;
+	struct sdhci_ops ops;
+};
+
+struct sdhci_of_host {
+	unsigned int clock;
+	u16 xfer_mode_shadow;
+};
+
+extern u32 sdhci_be32bs_readl(struct sdhci_host *host, int reg);
+extern u16 sdhci_be32bs_readw(struct sdhci_host *host, int reg);
+extern u8 sdhci_be32bs_readb(struct sdhci_host *host, int reg);
+extern void sdhci_be32bs_writel(struct sdhci_host *host, u32 val, int reg);
+extern void sdhci_be32bs_writew(struct sdhci_host *host, u16 val, int reg);
+extern void sdhci_be32bs_writeb(struct sdhci_host *host, u8 val, int reg);
+
+extern struct sdhci_of_data sdhci_esdhc;
+extern struct sdhci_of_data sdhci_hlwd;
+
+#endif /* __SDHCI_OF_H */
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index ce5f1d73dc0..842f46f9428 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -8,6 +8,8 @@
  * the Free Software Foundation; either version 2 of the License, or (at
  * your option) any later version.
  */
+#ifndef __SDHCI_H
+#define __SDHCI_H
 
 #include <linux/scatterlist.h>
 #include <linux/compiler.h>
@@ -408,3 +410,5 @@ extern void sdhci_remove_host(struct sdhci_host *host, int dead);
 extern int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state);
 extern int sdhci_resume_host(struct sdhci_host *host);
 #endif
+
+#endif /* __SDHCI_H */