Enumerator at include/linux/ata.h, line 168 References: drivers/ata/pata_bf54x.c, line 1135 drivers/ata/pata_ep93xx.c, line 797 drivers/ata/pata_hpt37x.c, line 482 drivers/ata/pata_hpt37x.c, line 486 drivers/ata/pata_mpc52xx.c, line 549 drivers/ata/sata_mv.c, line 1984 drivers/ata/sata_mv.c, line 1985 drivers/ata/sata_rcar.c, line 632 drivers/ide/hpt366.c, line 745 drivers/ide/hpt366.c, line 749 drivers/ide/ide-dma-sff.c, line 253 drivers/ide/ide-dma-sff.c, line 306 drivers/ide/tx4939ide.c, line 330 include/linux/ata.h, line 168