Add Port Multiplier related ATA constants and macros. Some of these
will be used by ata_link implementation.
---
include/linux/ata.h | 29 +++++++++++++++++++++++++++++
1 files changed, 29 insertions(+), 0 deletions(-)
51b532b3a54ccca372762a5f3cad55e65807df27
diff --git a/include/linux/ata.h b/include/linux/ata.h
index c494e1c..41ea837 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -154,6 +154,8 @@ enum {
ATA_CMD_READ_NATIVE_MAX = 0xF8,
ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
ATA_CMD_READ_LOG_EXT = 0x2f,
+ ATA_CMD_PM_READ = 0xE4,
+ ATA_CMD_PM_WRITE = 0xE8,
/* READ_LOG_EXT pages */
ATA_LOG_SATA_NCQ = 0x10,
@@ -187,6 +189,28 @@ enum {
0=to device, 1=to host */
ATAPI_CDB_LEN = 16,
+ /* PM stuff */
+ ATA_PM_MAX_PORTS = 15,
+ ATA_PM_CTRL_PORT = 15,
+
+ ATA_PM_GSCR_DWORDS = 128,
+ ATA_PM_GSCR_PROD_ID = 0,
+ ATA_PM_GSCR_REV = 1,
+ ATA_PM_GSCR_PORT_INFO = 2,
+ ATA_PM_GSCR_ERROR = 32,
+ ATA_PM_GSCR_ERROR_EN = 33,
+ ATA_PM_GSCR_FEAT = 64,
+ ATA_PM_GSCR_FEAT_EN = 96,
+
+ ATA_PM_PSCR_STATUS = 0,
+ ATA_PM_PSCR_ERROR = 1,
+ ATA_PM_PSCR_CONTROL = 2,
+
+ ATA_PM_FEAT_BIST = (1 << 0),
+ ATA_PM_FEAT_PMREQ = (1 << 1),
+ ATA_PM_FEAT_DYNSSC = (1 << 2),
+ ATA_PM_FEAT_NOTIFY = (1 << 3),
+
/* cable types */
ATA_CBL_NONE = 0,
ATA_CBL_PATA40 = 1,
@@ -363,4 +387,9 @@ static inline int lba_48_ok(u64 block, u
return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
}
+#define ata_pm_gscr_vendor(gscr) ((gscr)[ATA_PM_GSCR_PROD_ID] & 0xffff)
+#define ata_pm_gscr_devid(gscr) ((gscr)[ATA_PM_GSCR_PROD_ID] >> 16)
+#define ata_pm_gscr_rev(gscr) (((gscr)[ATA_PM_GSCR_REV] >> 8) & 0xff)
+#define ata_pm_gscr_ports(gscr) ((gscr)[ATA_PM_GSCR_PORT_INFO] & 0xf)
+
#endif /* __LINUX_ATA_H__ */
--
1.2.4
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