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Commit b1354cbb authored Jun 25, 2012 by Lin Ming Committed by Jeff Garzik Jun 29, 2012

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>

parent a606dac3

drivers/ata/libata-core.c

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -2374,6 +2374,9 @@ int ata_dev_configure(struct ata_device *dev)
	dma_dir_string = ", DMADIR";		dma_dir_string = ", DMADIR";
	}		}

			if (ata_id_has_da(dev->id))
			dev->flags \|= ATA_DFLAG_DA;

	/* print device info to dmesg */		/* print device info to dmesg */
	if (ata_msg_drv(ap) && print_info)		if (ata_msg_drv(ap) && print_info)
	ata_dev_info(dev,		ata_dev_info(dev,

include/linux/ata.h

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -578,6 +578,7 @@ static inline int ata_is_data(u8 prot)
	((u64) (id)[(n) + 0]) )		((u64) (id)[(n) + 0]) )

	#define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)		#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)		static inline bool ata_id_has_hipm(const u16 *id)
	{		{

include/linux/libata.h

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -161,6 +161,8 @@ enum {
	ATA_DFLAG_DETACH = (1 << 24),		ATA_DFLAG_DETACH = (1 << 24),
	ATA_DFLAG_DETACHED = (1 << 25),		ATA_DFLAG_DETACHED = (1 << 25),

			ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */

	ATA_DEV_UNKNOWN = 0, /* unknown device */		ATA_DEV_UNKNOWN = 0, /* unknown device */
	ATA_DEV_ATA = 1, /* ATA device */		ATA_DEV_ATA = 1, /* ATA device */
	ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */		ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */