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| author | Lin Ming <ming.m.lin@intel.com> | 2012-06-25 16:13:08 +0800 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2012-06-29 11:38:17 -0400 |
| commit | b1354cbb5bfce28f2e1ed28d77b362dfdfca638d (patch) | |
| tree | 0784fe570bc70663207f56a214f0ff529962bdc6 | |
| parent | a606dac368eed5696fb38e16b1394f1d049c09e9 (diff) | |
| download | op-kernel-dev-b1354cbb5bfce28f2e1ed28d77b362dfdfca638d.zip op-kernel-dev-b1354cbb5bfce28f2e1ed28d77b362dfdfca638d.tar.gz | |
libata: detect Device Attention support
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>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| -rw-r--r-- | drivers/ata/libata-core.c | 3 | ||||
| -rw-r--r-- | include/linux/ata.h | 1 | ||||
| -rw-r--r-- | 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 7705191..c14f88c 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2374,6 +2374,9 @@ int ata_dev_configure(struct ata_device *dev) dma_dir_string = ", DMADIR"; } + if (ata_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..5713d3a 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 ata_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 888feef..cc22b943 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) */ |
