libata-link: add PMP related ATA constants

Add Port Multiplier related ATA constants and macros.  Some of these
will be used by ata_link implementation.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 29 insertions, 0 deletions

diff --git a/include/linux/ata.h b/include/linux/ata.h
index 407dc7e098bc..b5a20162af32 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -164,6 +164,8 @@ enum {
         ATA_CMD_SET_MAX         = 0xF9,
         ATA_CMD_SET_MAX_EXT     = 0x37,
         ATA_CMD_READ_LOG_EXT    = 0x2f,
+        ATA_CMD_PMP_READ        = 0xE4,
+        ATA_CMD_PMP_WRITE       = 0xE8,
 
         /* READ_LOG_EXT pages */
         ATA_LOG_SATA_NCQ        = 0x10,
@@ -212,6 +214,28 @@ enum {
                                                    0=to device, 1=to host */
         ATAPI_CDB_LEN           = 16,
 
+        /* PMP stuff */
+        SATA_PMP_MAX_PORTS      = 15,
+        SATA_PMP_CTRL_PORT      = 15,
+
+        SATA_PMP_GSCR_DWORDS    = 128,
+        SATA_PMP_GSCR_PROD_ID   = 0,
+        SATA_PMP_GSCR_REV       = 1,
+        SATA_PMP_GSCR_PORT_INFO = 2,
+        SATA_PMP_GSCR_ERROR     = 32,
+        SATA_PMP_GSCR_ERROR_EN  = 33,
+        SATA_PMP_GSCR_FEAT      = 64,
+        SATA_PMP_GSCR_FEAT_EN   = 96,
+
+        SATA_PMP_PSCR_STATUS    = 0,
+        SATA_PMP_PSCR_ERROR     = 1,
+        SATA_PMP_PSCR_CONTROL   = 2,
+
+        SATA_PMP_FEAT_BIST      = (1 << 0),
+        SATA_PMP_FEAT_PMREQ     = (1 << 1),
+        SATA_PMP_FEAT_DYNSSC    = (1 << 2),
+        SATA_PMP_FEAT_NOTIFY    = (1 << 3),
+
         /* cable types */
         ATA_CBL_NONE            = 0,
         ATA_CBL_PATA40          = 1,
@@ -418,4 +442,9 @@ static inline int lba_48_ok(u64 block, u32 n_block)
         return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
 }
 
+#define sata_pmp_gscr_vendor(gscr)      ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
+#define sata_pmp_gscr_devid(gscr)       ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
+#define sata_pmp_gscr_rev(gscr)         (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
+#define sata_pmp_gscr_ports(gscr)       ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
+
 #endif /* __LINUX_ATA_H__ */