Add more SATA specific constants and macros to ata.h.
* SATA SETFEATURES constants
* SControl field selectors and extracting macros
* link powersave feature test macros
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
---
include/linux/ata.h | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+), 0 deletions(-)
cc62d2cee0b3edb867a7cfde35b8383c37900e65
diff --git a/include/linux/ata.h b/include/linux/ata.h
index a7798c3..089a2df 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -184,6 +184,12 @@ enum {
SETFEATURES_WC_ON = 0x02, /* Enable write cache */
SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
+ SETFEATURES_SATA_ON = 0x10, /* Enable SATA feature */
+ SETFEATURES_SATA_OFF = 0x90, /* Disable SATA feature */
+
+ /* SATA feature nsect values */
+ SETFEATURES_SATA_DIPS = 0x03,
+
/* ATAPI stuff */
ATAPI_PKT_DMA = (1 << 0),
ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
@@ -204,6 +210,13 @@ enum {
SCR_ACTIVE = 3,
SCR_NOTIFICATION = 4,
+ /* SControl subfields, each field is 4 bit wide */
+ ATA_SCTL_DET = 0, /* lsb */
+ ATA_SCTL_SPD = 1,
+ ATA_SCTL_IPM = 2,
+ ATA_SCTL_SPM = 3,
+ ATA_SCTL_PMP = 4,
+
/* SError bits */
SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
@@ -289,6 +302,9 @@ #define ata_id_has_dma(id) ((id)[49] & (
#define ata_id_has_sata(id) ((id)[76] && (id)[76] != 0xffff)
#define ata_id_has_ncq(id) (ata_id_has_sata(id) && ((id)[76] & (1 << 8)))
#define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1)
+#define ata_id_has_hips(id) (ata_id_has_sata(id) && ((id)[76] & (1 << 9)))
+#define ata_id_has_dips(id) (ata_id_has_sata(id) && ((id)[78] & (1 << 3)))
+#define ata_id_dips_enabled(id) (ata_id_has_sata(id) && ((id)[79] & (1 << 3)))
#define ata_id_removeable(id) ((id)[0] & (1 << 7))
#define ata_id_has_dword_io(id) ((id)[50] & (1 << 0))
#define ata_id_u32(id,n) \
@@ -367,4 +383,9 @@ static inline int lba_48_ok(u64 block, u
return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
}
+static inline u8 ata_scontrol_field(u32 scontrol, int sel)
+{
+ return (scontrol >> (sel * 4)) & 0xf;
+}
+
#endif /* __LINUX_ATA_H__ */
--
1.3.2
-
: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
