ata: move ATA_ID_ fields and functions to include/

We need ata_id_has_lba48() in another C file, so move
the ATA_ID_* stuff to include/ata_drive.h like in the Linux
Kernel.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 44 insertions, 0 deletions

diff --git a/include/ata_drive.h b/include/ata_drive.h
index 049082f0ca..abbafb9670 100644
--- a/include/ata_drive.h
+++ b/include/ata_drive.h
@@ -55,6 +55,50 @@
 #define ATA_DEVCTL_SOFT_RESET	(1 << 2)
 #define ATA_DEVCTL_INTR_DISABLE	(1 << 1)
 
+#define ata_id_u32(id,n)        \
+        (((uint32_t) (id)[(n) + 1] << 16) | ((uint32_t) (id)[(n)]))
+#define ata_id_u64(id,n)        \
+        ( ((uint64_t) (id)[(n) + 3] << 48) | \
+          ((uint64_t) (id)[(n) + 2] << 32) | \
+          ((uint64_t) (id)[(n) + 1] << 16) | \
+          ((uint64_t) (id)[(n) + 0]) )
+
+#define ata_id_has_lba(id)               ((id)[49] & (1 << 9))
+
+enum {
+	ATA_ID_SERNO		= 10,
+#define ATA_ID_SERNO_LEN 20
+	ATA_ID_FW_REV		= 23,
+#define ATA_ID_FW_REV_LEN 8
+	ATA_ID_PROD		= 27,
+#define ATA_ID_PROD_LEN 40
+	ATA_ID_CAPABILITY	= 49,
+	ATA_ID_FIELD_VALID	= 53,
+	ATA_ID_LBA_CAPACITY	= 60,
+	ATA_ID_MWDMA_MODES	= 63,
+	ATA_ID_PIO_MODES	= 64,
+	ATA_ID_QUEUE_DEPTH	= 75,
+	ATA_ID_MAJOR_VER	= 80,
+	ATA_ID_COMMAND_SET_1	= 82,
+	ATA_ID_COMMAND_SET_2	= 83,
+	ATA_ID_CFSSE		= 84,
+	ATA_ID_CFS_ENABLE_1	= 85,
+	ATA_ID_CFS_ENABLE_2	= 86,
+	ATA_ID_CSF_DEFAULT	= 87,
+	ATA_ID_UDMA_MODES	= 88,
+	ATA_ID_HW_CONFIG	= 93,
+	ATA_ID_LBA_CAPACITY_2	= 100,
+};
+
+static inline int ata_id_has_lba48(const uint16_t *id)
+{
+	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
+		return 0;
+	if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
+		return 0;
+	return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
+}
+
 /** addresses of each individual IDE drive register */
 struct ata_ioports {
 	void __iomem *cmd_addr;