Messages in this thread | | | Subject | Why no DMA?? | From | Neal Becker <> | Date | 26 Jul 1997 15:00:24 -0400 |
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I'm puzzled as to why DMA is not being enbabled on my IDE drive. The motherboard is Triton II. The drive supports mode 4. Here's what happens:
Jul 26 14:44:30 neptune kernel: PIIX3: bus-master IDE device on PCI bus 0 function 57 Jul 26 14:44:30 neptune kernel: ide0: BM-DMA at 0xf000-0xf007 Jul 26 14:44:30 neptune kernel: ide0 master: sample_CLKs=3, recovery_CLKs=3 Jul 26 14:44:30 neptune kernel: master: fastDMA=yes PreFetch=on IORDY=on fastPIO=on Jul 26 14:44:30 neptune kernel: slave : sample_CLKs=5, recovery_CLKs=4 Jul 26 14:44:30 neptune kernel: slave : fastDMA=yes PreFetch=off IORDY=on fastPIO=on Jul 26 14:44:30 neptune kernel: ide1: BM-DMA at 0xf008-0xf00f Jul 26 14:44:30 neptune kernel: ide1 master/slave: sample_CLKs=3, recovery_CLKs=1 Jul 26 14:44:30 neptune kernel: master: fastDMA=yes PreFetch=on IORDY=on fastPIO=on Jul 26 14:44:30 neptune kernel: slave : fastDMA=no PreFetch=off IORDY=off fastPIO=off Jul 26 14:44:30 neptune kernel: hda: WDC AC31200F, ATA DISK drive Jul 26 14:44:30 neptune kernel: hdb: MATSHITA CR-574, ATAPI CDROM drive Jul 26 14:44:30 neptune kernel: hdc: QUANTUM FIREBALL_TM3200A, ATA DISK drive Jul 26 14:44:30 neptune kernel: ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 Jul 26 14:44:30 neptune kernel: ide1 at 0x170-0x177,0x376 on irq 15 Jul 26 14:44:30 neptune kernel: hda: DMA disabled Jul 26 14:44:30 neptune kernel: hda: WDC AC31200F, 1222MB w/64kB Cache, LBA, CHS=621/64/63 Jul 26 14:44:30 neptune kernel: hdc: DMA disabled Jul 26 14:44:30 neptune kernel: hdc: QUANTUM FIREBALL_TM3200A, 3067MB w/76kB Cache, LBA, CHS=6232/16/63 Jul 26 14:44:30 neptune kernel: hdb: DMA disabled
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