1 files changed, 23 insertions, 3 deletions

diff --git a/include/linux/ata.h b/include/linux/ata.h
index 3671af869696..d89441907024 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -40,6 +40,8 @@ enum {
         ATA_MAX_DEVICES         = 2,    /* per bus/port */
         ATA_MAX_PRD             = 256,  /* we could make these 256/256 */
         ATA_SECT_SIZE           = 512,
+        ATA_MAX_SECTORS         = 256,
+        ATA_MAX_SECTORS_LBA48   = 65535,/* TODO: 65536? */
 
         ATA_ID_WORDS            = 256,
         ATA_ID_SERNO_OFS        = 10,
@@ -168,12 +170,16 @@ enum {
         XFER_UDMA_2             = 0x42,
         XFER_UDMA_1             = 0x41,
         XFER_UDMA_0             = 0x40,
+        XFER_MW_DMA_4           = 0x24, /* CFA only */
+        XFER_MW_DMA_3           = 0x23, /* CFA only */
         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_6              = 0x0E, /* CFA only */
+        XFER_PIO_5              = 0x0D, /* CFA only */
         XFER_PIO_4              = 0x0C,
         XFER_PIO_3              = 0x0B,
         XFER_PIO_2              = 0x0A,
@@ -272,7 +278,6 @@ struct ata_taskfile {
 };
 
 #define ata_id_is_ata(id)       (((id)[0] & (1 << 15)) == 0)
-#define ata_id_is_cfa(id)       ((id)[0] == 0x848A)
 #define ata_id_is_sata(id)      ((id)[93] == 0)
 #define ata_id_rahead_enabled(id) ((id)[85] & (1 << 6))
 #define ata_id_wcache_enabled(id) ((id)[85] & (1 << 5))
@@ -304,6 +309,9 @@ static inline unsigned int ata_id_major_version(const u16 *id)
 {
         unsigned int mver;
 
+        if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
+                return 0;
+
         for (mver = 14; mver >= 1; mver--)
                 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
                         break;
@@ -312,8 +320,8 @@ static inline unsigned int ata_id_major_version(const u16 *id)
 
 static inline int ata_id_current_chs_valid(const u16 *id)
 {
-        /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command 
-           has not been issued to the device then the values of 
+        /* 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 */
@@ -322,6 +330,18 @@ static inline int ata_id_current_chs_valid(const u16 *id)
                 id[56];    /* sectors in current translation */
 }
 
+static inline int ata_id_is_cfa(const u16 *id)
+{
+        u16 v = id[0];
+        if (v == 0x848A)        /* Standard CF */
+                return 1;
+        /* Could be CF hiding as standard ATA */
+        if (ata_id_major_version(id) >= 3 &&  id[82] != 0xFFFF &&
+                        (id[82] & ( 1 << 2)))
+                return 1;
+        return 0;
+}
+
 static inline int atapi_cdb_len(const u16 *dev_id)
 {
         u16 tmp = dev_id[0] & 0x3;