Merge branch 'e1000-fixes' of git://198.78.49.142/~jbrandeb/linux-2.6

[linux-2.6-omap-h63xx.git] / include / linux / ata.h

diff --git a/include/linux/ata.h b/include/linux/ata.h
index 94f77cce27fa10d634b7ffdbeb415d31613833b5..b02a16c435e78b6da13376238bb345aa2ac4ab12 100644 (file)
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -267,6 +267,16 @@ struct ata_taskfile {
          ((u64) (id)[(n) + 1] << 16) | \
          ((u64) (id)[(n) + 0]) )
 
+static inline unsigned int ata_id_major_version(const u16 *id)
+{
+       unsigned int mver;
+
+       for (mver = 14; mver >= 1; mver--)
+               if (id[ATA_ID_MAJOR_VER] & (1 << mver))
+                       break;
+       return mver;
+}
+
 static inline int ata_id_current_chs_valid(const u16 *id)
 {
        /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command 
@@ -302,4 +312,16 @@ static inline int ata_ok(u8 status)
                        == ATA_DRDY);
 }
 
+static inline int lba_28_ok(u64 block, u32 n_block)
+{
+       /* check the ending block number */
+       return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256);
+}
+
+static inline int lba_48_ok(u64 block, u32 n_block)
+{
+       /* check the ending block number */
+       return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
+}
+
 #endif /* __LINUX_ATA_H__ */