[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