diff options
Diffstat (limited to 'sys/dev/ata/ata-dma.c')
| -rw-r--r-- | sys/dev/ata/ata-dma.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/sys/dev/ata/ata-dma.c b/sys/dev/ata/ata-dma.c index 1069b01..0b32282 100644 --- a/sys/dev/ata/ata-dma.c +++ b/sys/dev/ata/ata-dma.c @@ -28,12 +28,8 @@ * $FreeBSD$ */ -#include "ata.h" #include "pci.h" #include "apm.h" - -#if NATA > 0 - #include <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> @@ -282,7 +278,13 @@ ata_dmainit(struct ata_softc *scp, int32_t device, } break; - default: /* well, we have no support for this, but try anyways */ + default: /* unknown controller chip */ + /* better not try generic DMA on ATAPI devices it almost never works */ + if ((device == ATA_MASTER && scp->devices & ATA_ATAPI_MASTER) || + (device == ATA_SLAVE && scp->devices & ATA_ATAPI_SLAVE)) + break; + + /* well, we have no support for this, but try anyways */ if (((wdmamode >= 2 && apiomode >= 4) || udmamode >= 2) && (inb(scp->bmaddr + ATA_BMSTAT_PORT) & ((device == ATA_MASTER) ? @@ -426,4 +428,3 @@ ata_dmastatus(struct ata_softc *scp, int32_t device) } #endif /* NPCI > 0 */ -#endif /* NATA > 0 */ |
