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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-21 15:27:09 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-21 15:27:09 -0700
commit1808caffaf448f0ad42ba04b25825fc170cf8e44 (patch)
tree4b0ecfabefb62c3b8cfcfb7a72041c34e1f7add7
parent3d15e4a32dfa3da45751356e5f47aa04b97370e0 (diff)
parent912490db699d83cb3d03570b63df7448677a3f56 (diff)
Merge of master.kernel.org:/home/rmk/linux-2.6-mmc.git
-rw-r--r--drivers/mmc/mmc_block.c5
-rw-r--r--include/linux/mmc/protocol.h27
2 files changed, 31 insertions, 1 deletions
diff --git a/drivers/mmc/mmc_block.c b/drivers/mmc/mmc_block.c
index b5b4a7b11903..d4eee99c2bf6 100644
--- a/drivers/mmc/mmc_block.c
+++ b/drivers/mmc/mmc_block.c
@@ -383,7 +383,10 @@ static int mmc_blk_probe(struct mmc_card *card)
struct mmc_blk_data *md;
int err;
- if (card->csd.cmdclass & ~0x1ff)
+ /*
+ * Check that the card supports the command class(es) we need.
+ */
+ if (!(card->csd.cmdclass & CCC_BLOCK_READ))
return -ENODEV;
if (card->csd.read_blkbits < 9) {
diff --git a/include/linux/mmc/protocol.h b/include/linux/mmc/protocol.h
index 7b904c5102f6..896342817b97 100644
--- a/include/linux/mmc/protocol.h
+++ b/include/linux/mmc/protocol.h
@@ -195,6 +195,33 @@ struct _mmc_csd {
#define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
#define MMC_CARD_BUSY 0x80000000 /* Card Power up status bit */
+/*
+ * Card Command Classes (CCC)
+ */
+#define CCC_BASIC (1<<0) /* (0) Basic protocol functions */
+ /* (CMD0,1,2,3,4,7,9,10,12,13,15) */
+#define CCC_STREAM_READ (1<<1) /* (1) Stream read commands */
+ /* (CMD11) */
+#define CCC_BLOCK_READ (1<<2) /* (2) Block read commands */
+ /* (CMD16,17,18) */
+#define CCC_STREAM_WRITE (1<<3) /* (3) Stream write commands */
+ /* (CMD20) */
+#define CCC_BLOCK_WRITE (1<<4) /* (4) Block write commands */
+ /* (CMD16,24,25,26,27) */
+#define CCC_ERASE (1<<5) /* (5) Ability to erase blocks */
+ /* (CMD32,33,34,35,36,37,38,39) */
+#define CCC_WRITE_PROT (1<<6) /* (6) Able to write protect blocks */
+ /* (CMD28,29,30) */
+#define CCC_LOCK_CARD (1<<7) /* (7) Able to lock down card */
+ /* (CMD16,CMD42) */
+#define CCC_APP_SPEC (1<<8) /* (8) Application specific */
+ /* (CMD55,56,57,ACMD*) */
+#define CCC_IO_MODE (1<<9) /* (9) I/O mode */
+ /* (CMD5,39,40,52,53) */
+#define CCC_SWITCH (1<<10) /* (10) High speed switch */
+ /* (CMD6,34,35,36,37,50) */
+ /* (11) Reserved */
+ /* (CMD?) */
/*
* CSD field definitions