Subject: IDE interface at PCI bus?
To: None <port-i386@netbsd.org>
From: Bernd Sieker <bsieker@techfak.uni-bielefeld.de>
List: port-i386
Date: 12/02/1998 17:12:16
Hi,

again one of those stupid hardware quastions...

I use NetBSD-1.3.2.

As most more recent PCs my board has 2 (E)IDE interfaces onboard,
supposedly connected via the PCI bus.

However, the kernel configuration file does not have options for ide
buses at pci, and although the kernel detects it like: 

  vendor 0x1106 product 0x0571 (IDE mass storage, interface 0x8a,\
	revision 0x06) at pci0 dev 7 function 1 not configured

it still configures only wdc0 at isa0 port 0x1f0-0x1f7 irq 14.

Does this have any meaning for performance, or is it just that the IDE
interface resides "logically" on the ISA bus?

My board also supports UDMA/33 transfers, but NetBSD only uses:
  wd0: using 16-sector 16-bit pio transfers, lba mode

I'm not an expert in PC hardware, so maybe anyone could clarify the
situation here? I did not find anything in the FAQs.

-- 
Bernd Sieker