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Fix potential cable detection problem on older CMD chips.

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This commit is contained in:
sos 2004-01-14 14:24:36 +00:00
parent f1b545fd1e
commit 3892f4c9cb
1 changed files with 9 additions and 7 deletions
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16
sys/dev/ata/ata-chipset.c
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@ -1816,14 +1816,16 @@ ata_sii_setmode(struct ata_device *atadev, int mode)
mode = ata_limit_mode(atadev, mode, ctlr->chip->max_dma);
if (ctlr->chip->max_dma < ATA_UDMA2) {
if (ctlr->chip->cfg2 & SIISETCLK) {
if (mode > ATA_UDMA2 && (pci_read_config(parent, 0x79, 1) &
(atadev->channel->unit ? 0x02 : 0x01))) {
ata_prtdev(atadev,
"DMA limited to UDMA33, non-ATA66 cable or device\n");
mode = ATA_UDMA2;
}
}
else
mode = ata_check_80pin(atadev, mode);
}
else if (mode > ATA_UDMA2 && (pci_read_config(parent, 0x79, 1) &
(atadev->channel->unit ? 0x02 : 0x01))) {
ata_prtdev(atadev,"DMA limited to UDMA33, non-ATA66 cable or device\n");
mode = ATA_UDMA2;
}
error = ata_controlcmd(atadev, ATA_SETFEATURES, ATA_SF_SETXFER, 0, mode);