Le 2003-09-06, Guillaume écrivait : > I'm running FreeBSD 5-CURRENT (Aug. 28 2003) on a P3 733MHz, 768MB ram > with a LG DVD-RW/DVD-RAM burner. I would like to know why ATAPICAM is so > slow with my system.
Maybe because ATAPI/CAM does not actually enable DMA. Can you try the
following patch?
Thomas.
Index: atapi-cam.c
===================================================================
RCS file: /home/ncvs/src/sys/dev/ata/atapi-cam.c,v
retrieving revision 1.22
diff -u -r1.22 atapi-cam.c
--- atapi-cam.c 11 Sep 2003 17:34:47 -0000 1.22
+++ atapi-cam.c 16 Sep 2003 13:20:18 -0000
@@ -227,6 +227,11 @@
2 * device_get_unit(atp->channel->dev) +
(atp->unit == ATA_MASTER) ? 0 : 1);
atp->softc = (void *)scp;
+ if (atapi_dma && atp->channel->dma &&
+ (atp->param->config & ATA_DRQ_MASK) != ATA_DRQ_INTR)
+ atp->setmode(atadev, ATA_DMA_MAX);
+ else
+ atp->setmode(atadev, ATA_PIO_MAX);
}
}
--
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