I have a Promise Ultra100 TX2 card with 2 brand new Maxtor drives. The setup should work in UDMA100 mode, but is downgraded to PIO mode 4 under FreeBSD 5.1 and 4.8.
Hardware is definitely OK, I have 2 controllers, 6 different 80 wire IDE cables, shielded and unshielded and no irq conflicts. Always the same problem. Disks work perfectly on an onboard VIA controller.
The Promise BIOS is the latest. NetBSD also downgrades to PIO mode 4, in an i386 and an alpha. Maybe some registers not setup correctly by the driver(s)?
dmesg excerpt:
[...]
atapci0: <Promise TX2 ATA100 controller> port 0xe080-0xe08f,0xe0a0-0xe0a3,0xe090-0xe097,0xe0a4-0xe0a7,0xe098-0xe09f mem 0x84000000-0x84003fff irq 10 at device 14.0 on pci 0
[...]
ad4: 39205MB <Maxtor 6E040L0> [79656/16/63] at ata2-master UDMA100
[...]
ad4: UDMA ICRC error reading fsbn 0 (ad4 bn 0; cn 0 tn 0 sn 0) retrying
ad4: UDMA ICRC error reading fsbn 0 (ad4 bn 0; cn 0 tn 0 sn 0) retrying
ad4: UDMA ICRC error reading fsbn 0 (ad4 bn 0; cn 0 tn 0 sn 0) retrying
ad4: UDMA ICRC error reading fsbn 0 (ad4 bn 0; cn 0 tn 0 sn 0) falling back to PIO mode
Help would be greatly appreciated!
Regards
Felix
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