Daniel Ortiz d.ortiz at
Fri Jan 2 10:12:59 PST 2004

On Fri, Jan 02, 2004 at 06:44:12PM +0100, Stefan Eßer wrote:
> Serial ATA works on my mainboard (with a Promise PDC20376 chip).
> The probe message talks about UDMA100 instead of SATA150:
> atapci0: <Promise PDC20376 SATA150 controller> port 0xa800-0xa87f,0xb000-0xb00f,0xb400-0xb43f mem 0xcd800000-0xcd81ffff,0xce000000-0xce000fff irq 17 at device 8.0 on pci0
> ad4: 157066MB <HDS722516VLSA80> [319120/16/63] at ata2-master UDMA100

I'm must use FreeBSD 4.8 or 4.9 with this server for use H-Sphere
(doesn't support 5.x branch).

The motherboard has an Intel ICH5 chipset and all motherboard devices
are supported and detected by the kernel.
In /usr/src/sys/dev/ata/ata-pci.c and ata-dma.c appears to be supported.

[taik0 at dani][~]# grep  ICH5 /usr/src/sys/dev/ata/*
/usr/src/sys/dev/ata/ata-dma.c:    case 0x24db8086:     /* Intel ICH5 */
/usr/src/sys/dev/ata/ata-dma.c:    case 0x24d18086:     /* Intel ICH5
/usr/src/sys/dev/ata/ata-pci.c: return "Intel ICH5 SATA150 controller";
/usr/src/sys/dev/ata/ata-pci.c: return "Intel ICH5 ATA100 controller";
/usr/src/sys/dev/ata/ata-pci.c:    case 0x24d18086:     /* Intel ICH5
SATA150 */

I must can set any UDMA mode with atacontrol, but doesn't work always
return the UDMA33 mode.

Do you have any special option in your kernel configuration or a setting
in sysctl?

Thanks in advance

Daniel Ortiz
d.ortiz at
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