2 files changed, 33 insertions, 13 deletions

diff --git a/include/linux/ata.h b/include/linux/ata.h
index a5b74efab067..ecb7346d0c16 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -132,6 +132,7 @@ enum {
         ATA_CMD_PACKET          = 0xA0,
         ATA_CMD_VERIFY          = 0x40,
         ATA_CMD_VERIFY_EXT      = 0x42,
+        ATA_CMD_INIT_DEV_PARAMS = 0x91,
 
         /* SETFEATURES stuff */
         SETFEATURES_XFER        = 0x03,
@@ -146,14 +147,14 @@ enum {
         XFER_MW_DMA_2           = 0x22,
         XFER_MW_DMA_1           = 0x21,
         XFER_MW_DMA_0           = 0x20,
+        XFER_SW_DMA_2           = 0x12,
+        XFER_SW_DMA_1           = 0x11,
+        XFER_SW_DMA_0           = 0x10,
         XFER_PIO_4              = 0x0C,
         XFER_PIO_3              = 0x0B,
         XFER_PIO_2              = 0x0A,
         XFER_PIO_1              = 0x09,
         XFER_PIO_0              = 0x08,
-        XFER_SW_DMA_2           = 0x12,
-        XFER_SW_DMA_1           = 0x11,
-        XFER_SW_DMA_0           = 0x10,
         XFER_PIO_SLOW           = 0x00,
 
         /* ATAPI stuff */
@@ -181,6 +182,7 @@ enum {
         ATA_TFLAG_ISADDR        = (1 << 1), /* enable r/w to nsect/lba regs */
         ATA_TFLAG_DEVICE        = (1 << 2), /* enable r/w to device reg */
         ATA_TFLAG_WRITE         = (1 << 3), /* data dir: host->dev==1 (write) */
+        ATA_TFLAG_LBA           = (1 << 4), /* enable LBA */
 };
 
 enum ata_tf_protocols {
@@ -250,6 +252,18 @@ struct ata_taskfile {
           ((u64) (id)[(n) + 1] << 16) | \
           ((u64) (id)[(n) + 0]) )
 
+static inline int ata_id_current_chs_valid(u16 *id)
+{
+        /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command 
+           has not been issued to the device then the values of 
+           id[54] to id[56] are vendor specific. */
+        return (id[53] & 0x01) && /* Current translation valid */
+                id[54] &&  /* cylinders in current translation */
+                id[55] &&  /* heads in current translation */
+                id[55] <= 16 &&
+                id[56];    /* sectors in current translation */
+}
+
 static inline int atapi_cdb_len(u16 *dev_id)
 {
         u16 tmp = dev_id[0] & 0x3;
diff --git a/include/linux/libata.h b/include/linux/libata.h
index ceee1fc42c60..4739a75b983d 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -97,6 +97,7 @@ enum {
         ATA_DFLAG_LBA48         = (1 << 0), /* device supports LBA48 */
         ATA_DFLAG_PIO           = (1 << 1), /* device currently in PIO mode */
         ATA_DFLAG_LOCK_SECTORS  = (1 << 2), /* don't adjust max_sectors */
+        ATA_DFLAG_LBA           = (1 << 3), /* device supports LBA */
 
         ATA_DEV_UNKNOWN         = 0,    /* unknown device */
         ATA_DEV_ATA             = 1,    /* ATA device */
@@ -156,15 +157,15 @@ enum {
         ATA_SHIFT_PIO           = 11,
 };
 
-enum pio_task_states {
-        PIO_ST_UNKNOWN,
-        PIO_ST_IDLE,
-        PIO_ST_POLL,
-        PIO_ST_TMOUT,
-        PIO_ST,
-        PIO_ST_LAST,
-        PIO_ST_LAST_POLL,
-        PIO_ST_ERR,
+enum hsm_task_states {
+        HSM_ST_UNKNOWN,
+        HSM_ST_IDLE,
+        HSM_ST_POLL,
+        HSM_ST_TMOUT,
+        HSM_ST,
+        HSM_ST_LAST,
+        HSM_ST_LAST_POLL,
+        HSM_ST_ERR,
 };
 
 /* forward declarations */
@@ -282,6 +283,11 @@ struct ata_device {
         u8                      xfer_protocol;  /* taskfile xfer protocol */
         u8                      read_cmd;       /* opcode to use on read */
         u8                      write_cmd;      /* opcode to use on write */
+
+        /* for CHS addressing */
+        u16                     cylinders;      /* Number of cylinders */
+        u16                     heads;          /* Number of heads */
+        u16                     sectors;        /* Number of sectors per track */
 };
 
 struct ata_port {
@@ -319,7 +325,7 @@ struct ata_port {
         struct work_struct      packet_task;
 
         struct work_struct      pio_task;
-        unsigned int            pio_task_state;
+        unsigned int            hsm_task_state;
         unsigned long           pio_task_timeout;
 
         void                    *private_data;