From patchwork Mon Jun 25 08:13:08 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [v6,07/11] libata: detect Device Attention support Date: Sun, 24 Jun 2012 22:13:08 -0000 From: Lin Ming X-Patchwork-Id: 166997 Message-Id: <1340611992-41457-8-git-send-email-ming.m.lin@intel.com> To: Jeff Garzik , Aaron Lu , Holger Macht , Matthew Garrett , Alan Cox , David Woodhouse , Dan Williams Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, linux-acpi@vger.kernel.org Add a new flag ATA_DFLAG_DA to indicate that device supports "Device Attention". Acked-by: Aaron Lu Signed-off-by: Lin Ming --- drivers/ata/libata-core.c | 3 +++ include/linux/ata.h | 1 + include/linux/libata.h | 2 ++ 3 files changed, 6 insertions(+) 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) */