Messages in this thread Patch in this message | | | From | Lin Ming <> | Subject | [PATCH v3 4/7] libata: detech Device Attention support | Date | Wed, 28 Mar 2012 14:21:59 +0800 |
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Add a new flag ATA_DFLAG_DA to indicate that device supports "Device Attention".
Acked-by: Aaron Lu <aaron.lu@amd.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> --- 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
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