Subject: Re: IDE light
To: Peter Seebach <seebs@plethora.net>
From: Jun-ichiro itojun Hagino <itojun@iijlab.net>
List: port-i386
Date: 08/23/2000 12:35:43
>It's not *the same*, in that my system is working beautifully, and even seems
>to have normal performance characteristics.
>
>It is similar (system is a ThinkPad, but a 380Z).
>
>I've been using pciide for a long time, and this is the only quirk I've
>seen on this system.  I did not have this problem before around the time of
>Usenix; I've been rebuilding -current periodically since 1.4D or so.
>
>pciide0 at pci0 dev 6 function 1: Intel 82371AB IDE controller (PIIX4) (rev.  0x01)
>pciide0: bus-master DMA support present
>pciide0: primary channel wired to compatibility mode
>atapibus0 at pciide0 channel 0
>wd0 at pciide0 channel 0 drive 0: <IBM-DADA-26480>
>pciide0: primary channel interrupting at irq 14
>wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (using DMA data transfers)
>cd0(pciide0:0:1): using PIO mode 4, DMA mode 2 (using DMA data transfers)
>pciide0: secondary channel wired to compatibility mode
>pciide0: secondary channel ignored (disabled)

	it looks to be a little bit timing-related; i put some printf() for
	debugging, and made the success/failure ratio drastically.

itojun