-#define ata_id_is_ata(dev) (((dev)->id[0] & (1 << 15)) == 0)
-#define ata_id_rahead_enabled(dev) ((dev)->id[85] & (1 << 6))
-#define ata_id_wcache_enabled(dev) ((dev)->id[85] & (1 << 5))
-#define ata_id_has_lba48(dev) ((dev)->id[83] & (1 << 10))
-#define ata_id_has_wcache(dev) ((dev)->id[82] & (1 << 5))
-#define ata_id_has_pm(dev) ((dev)->id[82] & (1 << 3))
-#define ata_id_has_lba(dev) ((dev)->id[49] & (1 << 8))
-#define ata_id_has_dma(dev) ((dev)->id[49] & (1 << 9))
-#define ata_id_removeable(dev) ((dev)->id[0] & (1 << 7))
-#define ata_id_u32(dev,n) \
- (((u32) (dev)->id[(n) + 1] << 16) | ((u32) (dev)->id[(n)]))
-#define ata_id_u64(dev,n) \
- ( ((u64) dev->id[(n) + 3] << 48) | \
- ((u64) dev->id[(n) + 2] << 32) | \
- ((u64) dev->id[(n) + 1] << 16) | \
- ((u64) dev->id[(n) + 0]) )
+#define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0)
+#define ata_id_rahead_enabled(id) ((id)[85] & (1 << 6))
+#define ata_id_wcache_enabled(id) ((id)[85] & (1 << 5))
+#define ata_id_has_flush(id) ((id)[83] & (1 << 12))
+#define ata_id_has_flush_ext(id) ((id)[83] & (1 << 13))
+#define ata_id_has_lba48(id) ((id)[83] & (1 << 10))
+#define ata_id_has_wcache(id) ((id)[82] & (1 << 5))
+#define ata_id_has_pm(id) ((id)[82] & (1 << 3))
+#define ata_id_has_lba(id) ((id)[49] & (1 << 9))
+#define ata_id_has_dma(id) ((id)[49] & (1 << 8))
+#define ata_id_removeable(id) ((id)[0] & (1 << 7))
+#define ata_id_u32(id,n) \
+ (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
+#define ata_id_u64(id,n) \
+ ( ((u64) (id)[(n) + 3] << 48) | \
+ ((u64) (id)[(n) + 2] << 32) | \
+ ((u64) (id)[(n) + 1] << 16) | \
+ ((u64) (id)[(n) + 0]) )
+
+static inline int atapi_cdb_len(u16 *dev_id)
+{
+ u16 tmp = dev_id[0] & 0x3;
+ switch (tmp) {
+ case 0: return 12;
+ case 1: return 16;
+ default: return -1;
+ }
+}