Enumerator at include/linux/ata.h, line 154 References: drivers/ata/ata_piix.c, line 1056 drivers/ata/libata-sff.c, line 2804 drivers/ata/libata-sff.c, line 2875 drivers/ata/pata_arasan_cf.c, line 387 drivers/ata/pata_arasan_cf.c, line 617 drivers/ata/pata_arasan_cf.c, line 652 drivers/ata/pata_ep93xx.c, line 791 drivers/ata/pata_hpt37x.c, line 493 drivers/ata/pata_macio.c, line 675 drivers/ata/pata_macio.c, line 701 drivers/ata/pata_mpc52xx.c, line 590 drivers/ata/pata_ns87415.c, line 136 drivers/ata/pata_ns87415.c, line 188 drivers/ata/pata_pxa.c, line 118 drivers/ata/sata_mv.c, line 1971 drivers/ata/sata_mv.c, line 1972 drivers/ata/sata_nv.c, line 2084 drivers/ide/ide-dma-sff.c, line 218 drivers/ide/ide-dma-sff.c, line 251 drivers/ide/ide-dma-sff.c, line 305 drivers/ide/ide-dma-sff.c, line 307 drivers/ide/tx4939ide.c, line 225 drivers/ide/tx4939ide.c, line 329 include/linux/ata.h, line 154