Index: linux-2.6.23-rc8/include/linux/mmc/core.h
===================================================================
--- linux-2.6.23-rc8.orig/include/linux/mmc/core.h
+++ linux-2.6.23-rc8/include/linux/mmc/core.h
@@ -54,12 +54,15 @@
 	unsigned int		retries;	/* max number of retries */
 	unsigned int		error;		/* command error */
 
-#define MMC_ERR_NONE	0
-#define MMC_ERR_TIMEOUT	1
-#define MMC_ERR_BADCRC	2
-#define MMC_ERR_FIFO	3
-#define MMC_ERR_FAILED	4
-#define MMC_ERR_INVALID	5
+#define MMC_ERR_NONE		0
+#define MMC_ERR_TIMEOUT		1
+#define MMC_ERR_BADCRC		2
+#define MMC_ERR_FIFO		3
+#define MMC_ERR_DMA		4
+#define MMC_ERR_BUSY		5
+#define MMC_ERR_FAILED		6
+#define MMC_ERR_INVALID		7
+#define MMC_ERR_CANCELED	8
 
 	struct mmc_data		*data;		/* data segment associated with cmd */
 	struct mmc_request	*mrq;		/* associated request */
Index: linux-2.6.23-rc8/include/linux/mmc/mmc.h
===================================================================
--- linux-2.6.23-rc8.orig/include/linux/mmc/mmc.h
+++ linux-2.6.23-rc8/include/linux/mmc/mmc.h
@@ -78,6 +78,21 @@
 #define MMC_APP_CMD              55   /* ac   [31:16] RCA        R1  */
 #define MMC_GEN_CMD              56   /* adtc [0] RD/WR          R1  */
 
+/* SD commands                           type  argument     response */
+  /* class 0 */
+/* This is basically the same command as for MMC with some quirks. */
+#define SD_SEND_RELATIVE_ADDR     3   /* bcr                     R6  */
+#define SD_SEND_IF_COND           8   /* bcr  [11:0] See below   R7  */
+
+  /* class 10 */
+#define SD_SWITCH                 6   /* adtc [31:0] See below   R1  */
+
+  /* Application commands */
+#define SD_APP_SET_BUS_WIDTH      6   /* ac   [1:0] bus width    R1  */
+#define SD_APP_SEND_NUM_WR_BLKS  22   /* adtc                    R1  */
+#define SD_APP_OP_COND           41   /* bcr  [31:0] OCR         R3  */
+#define SD_APP_SEND_SCR          51   /* adtc                    R1  */
+
 /*
  * MMC_SWITCH argument format:
  *
@@ -90,6 +105,27 @@
  */
 
 /*
+ * SD_SWITCH argument format:
+ *
+ *      [31] Check (0) or switch (1)
+ *      [30:24] Reserved (0)
+ *      [23:20] Function group 6
+ *      [19:16] Function group 5
+ *      [15:12] Function group 4
+ *      [11:8] Function group 3
+ *      [7:4] Function group 2
+ *      [3:0] Function group 1
+ */
+
+/*
+ * SD_SEND_IF_COND argument format:
+ *
+ *	[31:12] Reserved (0)
+ *	[11:8] Host Voltage Supply Flags
+ *	[7:0] Check Pattern (0xAA)
+ */
+
+/*
   MMC status in R1
   Type
   	e : error bit
@@ -172,9 +208,30 @@
 	u8  ecc;
 };
 
-/*
- * OCR bits are mostly in host.h
- */
+#define MMC_VDD_145_150	0x00000001	/* VDD voltage 1.45 - 1.50 */
+#define MMC_VDD_150_155	0x00000002	/* VDD voltage 1.50 - 1.55 */
+#define MMC_VDD_155_160	0x00000004	/* VDD voltage 1.55 - 1.60 */
+#define MMC_VDD_160_165	0x00000008	/* VDD voltage 1.60 - 1.65 */
+#define MMC_VDD_165_170	0x00000010	/* VDD voltage 1.65 - 1.70 */
+#define MMC_VDD_17_18	0x00000020	/* VDD voltage 1.7 - 1.8 */
+#define MMC_VDD_18_19	0x00000040	/* VDD voltage 1.8 - 1.9 */
+#define MMC_VDD_19_20	0x00000080	/* VDD voltage 1.9 - 2.0 */
+#define MMC_VDD_20_21	0x00000100	/* VDD voltage 2.0 ~ 2.1 */
+#define MMC_VDD_21_22	0x00000200	/* VDD voltage 2.1 ~ 2.2 */
+#define MMC_VDD_22_23	0x00000400	/* VDD voltage 2.2 ~ 2.3 */
+#define MMC_VDD_23_24	0x00000800	/* VDD voltage 2.3 ~ 2.4 */
+#define MMC_VDD_24_25	0x00001000	/* VDD voltage 2.4 ~ 2.5 */
+#define MMC_VDD_25_26	0x00002000	/* VDD voltage 2.5 ~ 2.6 */
+#define MMC_VDD_26_27	0x00004000	/* VDD voltage 2.6 ~ 2.7 */
+#define MMC_VDD_27_28	0x00008000	/* VDD voltage 2.7 ~ 2.8 */
+#define MMC_VDD_28_29	0x00010000	/* VDD voltage 2.8 ~ 2.9 */
+#define MMC_VDD_29_30	0x00020000	/* VDD voltage 2.9 ~ 3.0 */
+#define MMC_VDD_30_31	0x00040000	/* VDD voltage 3.0 ~ 3.1 */
+#define MMC_VDD_31_32	0x00080000	/* VDD voltage 3.1 ~ 3.2 */
+#define MMC_VDD_32_33	0x00100000	/* VDD voltage 3.2 ~ 3.3 */
+#define MMC_VDD_33_34	0x00200000	/* VDD voltage 3.3 ~ 3.4 */
+#define MMC_VDD_34_35	0x00400000	/* VDD voltage 3.4 ~ 3.5 */
+#define MMC_VDD_35_36	0x00800000	/* VDD voltage 3.5 ~ 3.6 */
 #define MMC_CARD_BUSY	0x80000000	/* Card Power up status bit */
 
 /*
@@ -253,5 +310,19 @@
 #define MMC_SWITCH_MODE_CLEAR_BITS	0x02	/* Clear bits which are 1 in value */
 #define MMC_SWITCH_MODE_WRITE_BYTE	0x03	/* Set target to value */
 
+/*
+ * SCR field definitions
+ */
+
+#define SCR_SPEC_VER_0      0           /* Implements system specification 1.0 - 1.01 */
+#define SCR_SPEC_VER_1      1           /* Implements system specification 1.10 */
+#define SCR_SPEC_VER_2      2           /* Implements system specification 2.00 */
+
+/*
+ * SD bus widths
+ */
+#define SD_BUS_WIDTH_1      0
+#define SD_BUS_WIDTH_4      2
+
 #endif  /* MMC_MMC_PROTOCOL_H */
 
