Commit b1354cbb authored by Lin Ming's avatar Lin Ming Committed by Jeff Garzik
Browse files

libata: detect Device Attention support 



Add a new flag ATA_DFLAG_DA to indicate that device supports "Device
Attention".

Acked-by: default avatarAaron Lu <aaron.lu@amd.com>
Signed-off-by: default avatarLin Ming <ming.m.lin@intel.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent a606dac3

drivers/ata/libata-core.c

+3 −0
Original line number Diff line number Diff line
@@ -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,

include/linux/ata.h

+1 −0
Original line number Diff line number Diff line
@@ -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)

{

include/linux/libata.h

+2 −0
Original line number Diff line number Diff line
@@ -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) */