diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
new file mode 100644
index 0000000..f67686c
--- /dev/null
+++ b/include/linux/mmc/host.h
@@ -0,0 +1,108 @@
+/*
+ *  linux/include/linux/mmc/host.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  Host driver specific definitions.
+ */
+#ifndef LINUX_MMC_HOST_H
+#define LINUX_MMC_HOST_H
+
+#include <linux/mmc/mmc.h>
+
+struct mmc_ios {
+	unsigned int	clock;			/* clock rate */
+	unsigned short	vdd;
+
+#define	MMC_VDD_150	0
+#define	MMC_VDD_155	1
+#define	MMC_VDD_160	2
+#define	MMC_VDD_165	3
+#define	MMC_VDD_170	4
+#define	MMC_VDD_180	5
+#define	MMC_VDD_190	6
+#define	MMC_VDD_200	7
+#define	MMC_VDD_210	8
+#define	MMC_VDD_220	9
+#define	MMC_VDD_230	10
+#define	MMC_VDD_240	11
+#define	MMC_VDD_250	12
+#define	MMC_VDD_260	13
+#define	MMC_VDD_270	14
+#define	MMC_VDD_280	15
+#define	MMC_VDD_290	16
+#define	MMC_VDD_300	17
+#define	MMC_VDD_310	18
+#define	MMC_VDD_320	19
+#define	MMC_VDD_330	20
+#define	MMC_VDD_340	21
+#define	MMC_VDD_350	22
+#define	MMC_VDD_360	23
+
+	unsigned char	bus_mode;		/* command output mode */
+
+#define MMC_BUSMODE_OPENDRAIN	1
+#define MMC_BUSMODE_PUSHPULL	2
+
+	unsigned char	power_mode;		/* power supply mode */
+
+#define MMC_POWER_OFF		0
+#define MMC_POWER_UP		1
+#define MMC_POWER_ON		2
+};
+
+struct mmc_host_ops {
+	void	(*request)(struct mmc_host *host, struct mmc_request *req);
+	void	(*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
+};
+
+struct mmc_card;
+struct device;
+
+struct mmc_host {
+	struct device		*dev;
+	struct mmc_host_ops	*ops;
+	unsigned int		f_min;
+	unsigned int		f_max;
+	u32			ocr_avail;
+	char			host_name[8];
+
+	/* host specific block data */
+	unsigned int		max_seg_size;	/* see blk_queue_max_segment_size */
+	unsigned short		max_hw_segs;	/* see blk_queue_max_hw_segments */
+	unsigned short		max_phys_segs;	/* see blk_queue_max_phys_segments */
+	unsigned short		max_sectors;	/* see blk_queue_max_sectors */
+	unsigned short		unused;
+
+	/* private data */
+	struct mmc_ios		ios;		/* current io bus settings */
+	u32			ocr;		/* the current OCR setting */
+
+	struct list_head	cards;		/* devices attached to this host */
+
+	wait_queue_head_t	wq;
+	spinlock_t		lock;		/* card_busy lock */
+	struct mmc_card		*card_busy;	/* the MMC card claiming host */
+	struct mmc_card		*card_selected;	/* the selected MMC card */
+
+	struct work_struct	detect;
+};
+
+extern struct mmc_host *mmc_alloc_host(int extra, struct device *);
+extern int mmc_add_host(struct mmc_host *);
+extern void mmc_remove_host(struct mmc_host *);
+extern void mmc_free_host(struct mmc_host *);
+
+#define mmc_priv(x)	((void *)((x) + 1))
+#define mmc_dev(x)	((x)->dev)
+
+extern int mmc_suspend_host(struct mmc_host *, u32);
+extern int mmc_resume_host(struct mmc_host *);
+
+extern void mmc_detect_change(struct mmc_host *);
+extern void mmc_request_done(struct mmc_host *, struct mmc_request *);
+
+#endif
+