Messages in this thread |  | | Date | Thu, 15 Nov 2001 09:01:54 +0100 | From | Nicolas Aspert <> | Subject | Re: Problem with i820 AGP patch |
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Daniele Venzano wrote:
> Your patch to add AGP support for i820 chipset doesn't work for me, if I > load agpgart module with agp_try_unsupported=1 I get: > > - > Linux agpgart interface v0.99 (c) Jeff Hartmann > agpgart: Maximum main memory to use for agp memory: 262M > agpgart: Trying generic Intel routines for device id: 2501 > ^^^^^^^^^^^^^ > agpgart: AGP aperture is 256M @ 0xd0000000 > -
Here is what I have in 'drivers/pci/pci.ids' :
2500 82820 820 (Camino) Chipset Host Bridge (MCH) 1043 801c P3C-2000 system chipset 2501 82820 820 (Camino) Chipset Host Bridge (MCH) 1043 801c P3C-2000 system chipset 250b 82820 820 (Camino) Chipset Host Bridge 250f 82820 820 (Camino) Chipset PCI to AGP Bridge
So I guess that 0x2500 and 0x2501 should be initialized in the same way, through the same routines. Unfortunately, I dont have such a machine to test... Can you send what 'lspci -ev' shows ?
> That device id is different from the corresponding line in apg.h:174 > #define PCI_DEVICE_ID_INTEL_820_0 0x2500 > > I tried to change that line in: > #define PCI_DEVICE_ID_INTEL_820_0 0x2501 > > And it worked! But I don't know why the id for your chip is different > from mine... >
It worked, but in which way ? Did you test X+OpenGL apps to see whether it did the trick ? The fact that the module loads itself is not always sufficient to say that it works (believe me :-)
> My motherboard is an Asus P3C2000 with a P3 500 running kernel 2.4.14 > > > I've also another problem (I think AGP related) with DRI/DRM ang XFree > 4.1.0, but I'm still working on it. > If I try running some OpenGL app with more than 256Mb of RAM, the system hangs > (need hard reset, no SysReq works). This happens with 2.4.13 and 2.4.14, > before I hadn't tried since I had only 128Mb...) > Someone can please tell me if this problem has something to do with > having a "Maximum main memory to use for agp memory" value grater than > AGP aperture value ? >
With your custom patch, or with the 'generic' stuff ?
Regards. -- Nicolas Aspert Signal Processing Laboratory (LTS) Swiss Federal Institute of Technology (EPFL)
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