Re: i820 agp support ?

From: Nicolas Aspert (Nicolas.Aspert@epfl.ch)
Date: Wed Oct 31 2001 - 11:37:30 EST

Robert Love wrote:

>
> I will work on support for the i820 ... I don't believe there is any
> particular reason we don't support it. Please give me the output of
>
> /sbin/lspci -s 0 -v -n
>
> on your i820 machine.

Hello

Here is the output I get :

00:00.0 Class 0600: 8086:2500 (rev 03)
         Flags: bus master, fast devsel, latency 0
         Memory at f8000000 (32-bit, prefetchable) [size=64M]
         Capabilities: [a0] AGP version 2.0

01:00.0 Class 0300: 10de:0028 (rev 11)
         Subsystem: 1048:0c20
         Flags: bus master, 66Mhz, medium devsel, latency 248, IRQ 10
         Memory at f4000000 (32-bit, non-prefetchable) [size=16M]
         Memory at f6000000 (32-bit, prefetchable) [size=32M]
         Expansion ROM at <unassigned> [disabled] [size=64K]
         Capabilities: [60] Power Management version 1
         Capabilities: [44] AGP version 2.0

I was trying to tweak myself the agp code (well, mostly by copying the
intel_generic_setup stuff to a intel_i820_setup stuff, but I guess there
is a more clever way !). Maybe I can help with this ?

I guess that the device id's that must be added into 'agp.h' look like
this :

#ifndef PCI_DEVICE_ID_INTEL_820_0
#define PCI_DEVICE_ID_INTEL_820_0 0x2500
#endif
/* [...] */
#ifndef PCI_DEVICE_ID_INTEL_820_1
#define PCI_DEVICE_ID_INTEL_820_1 0x250f
#endif

is it correct ?

Nicolas. 

-- 
Nicolas Aspert      Signal Processing Laboratory (LTS)
Swiss Federal Institute of Technology (EPFL)

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