[PATCH] libata CHS: calculate read/write commands and protocol on the fly (revise #6)
- merge ata_prot_to_cmd() and ata_dev_set_protocol() as
ata_rwcmd_protocol()
- pave road for read/write multiple support
- remove usage of pre-cached command and protocol values and call
ata_rwcmd_protocol() instead
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
==============
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
diff --git a/include/linux/ata.h b/include/linux/ata.h
index ecb7346..630908c 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -128,6 +128,10 @@
ATA_CMD_PIO_READ_EXT = 0x24,
ATA_CMD_PIO_WRITE = 0x30,
ATA_CMD_PIO_WRITE_EXT = 0x34,
+ ATA_CMD_READ_MULTI = 0xC4,
+ ATA_CMD_READ_MULTI_EXT = 0x29,
+ ATA_CMD_WRITE_MULTI = 0xC5,
+ ATA_CMD_WRITE_MULTI_EXT = 0x39,
ATA_CMD_SET_FEATURES = 0xEF,
ATA_CMD_PACKET = 0xA0,
ATA_CMD_VERIFY = 0x40,
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 7929cfc..0261c55 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -283,10 +283,8 @@
u8 xfer_mode;
unsigned int xfer_shift; /* ATA_SHIFT_xxx */
- /* cache info about current transfer mode */
- u8 xfer_protocol; /* taskfile xfer protocol */
- u8 read_cmd; /* opcode to use on read */
- u8 write_cmd; /* opcode to use on write */
+ unsigned int multi_count; /* sectors count for
+ READ/WRITE MULTIPLE */
/* for CHS addressing */
u16 cylinders; /* Number of cylinders */