Thread (29 messages) 29 messages, 5 authors, 2012-04-06
STALE5179d REVIEWED: 1 (0M)
Revisions (4)
  1. v3 current
  2. v4 [diff vs current]
  3. v5 [diff vs current]
  4. v6 [diff vs current]

[PATCH v3 4/7] libata: detech Device Attention support

From: Lin Ming <hidden>
Date: 2012-03-28 06:24:14
Also in: linux-acpi, linux-scsi, lkml
Subsystem: libata subsystem (serial and parallel ata drivers), the rest · Maintainers: Damien Le Moal, Niklas Cassel, Linus Torvalds

Add a new flag ATA_DFLAG_DA to indicate that device supports "Device
Attention".

Acked-by: Aaron Lu <redacted>
Signed-off-by: Lin Ming <redacted>
---
 drivers/ata/libata-core.c |    3 +++
 include/linux/ata.h       |    1 +
 include/linux/libata.h    |    2 ++
 3 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 6742cc4..2a10701 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -2368,6 +2368,9 @@ int ata_dev_configure(struct ata_device *dev)
 			dma_dir_string = ", DMADIR";
 		}
 
+		if (atapi_id_has_da(dev->id))
+			dev->flags |= ATA_DFLAG_DA;
+
 		/* print device info to dmesg */
 		if (ata_msg_drv(ap) && print_info)
 			ata_dev_info(dev,
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 32df2b6..6ee41cc 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -578,6 +578,7 @@ static inline int ata_is_data(u8 prot)
 	  ((u64) (id)[(n) + 0]) )
 
 #define ata_id_cdb_intr(id)	(((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
+#define atapi_id_has_da(id)	((id)[77] & (1 << 4))
 
 static inline bool ata_id_has_hipm(const u16 *id)
 {
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 36970c6..3085bdc 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -161,6 +161,8 @@ enum {
 	ATA_DFLAG_DETACH	= (1 << 24),
 	ATA_DFLAG_DETACHED	= (1 << 25),
 
+	ATA_DFLAG_DA		= (1 << 26), /* device supports Device Attention */
+
 	ATA_DEV_UNKNOWN		= 0,	/* unknown device */
 	ATA_DEV_ATA		= 1,	/* ATA device */
 	ATA_DEV_ATA_UNSUP	= 2,	/* ATA device (unsupported) */
-- 
1.7.2.5
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help