Messages in this thread |  | | Date | Sun, 19 Nov 2000 20:39:03 +0100 | From | Petr Vandrovec <> | Subject | Re: Odd behaviour with agpgart |
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On Sat, Nov 18, 2000 at 10:43:20PM -0500, John Cavan wrote: > Bus 1, device 0, function 0: > VGA compatible controller: Matrox Graphics, Inc. MGA G400 AGP (rev 5). > IRQ 16. > Master Capable. Latency=64. Min Gnt=16.Max Lat=32. > Prefetchable 32 bit memory at 0xf6000000 [0xf7ffffff]. > Non-prefetchable 32 bit memory at 0xfeafc000 [0xfeafffff]. > Non-prefetchable 32 bit memory at 0xfe000000 [0xfe7fffff]. > > But agpgart sets up: > > agpgart: Maximum main memory to use for agp memory: 440M > agpgart: Detected Intel 440BX chipset > agpgart: AGP aperture is 32M @ 0xfa000000
AGP aperture is feature of host bridge:
00:00.0 Host bridge: Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge (rev 02) Flags: bus master, medium devsel, latency 32 Memory at d0000000 (32-bit, prefetchable) [size=64M] ^^^^^^^^ ^^^^^^^^^^ Capabilities: [a0] AGP version 1.0
01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G200 AGP (rev 01) (prog-if 00 [VGA]) Subsystem: Matrox Graphics, Inc. Millennium G200 AGP Flags: bus master, medium devsel, latency 32, IRQ 11 Memory at d8000000 (32-bit, prefetchable) [size=16M] Memory at d4000000 (32-bit, non-prefetchable) [size=16K] Memory at d5000000 (32-bit, non-prefetchable) [size=8M] Expansion ROM at <unassigned> [disabled] [size=64K] Capabilities: [dc] Power Management version 1 Capabilities: [f0] AGP version 1.0
So it matters what you have listed in 00:00.0 node, not on Matrox device.
> Needless to say, the two disagree and direct rendering is disabled. > Attached is my .config for 2.4.0-test11-pre7. I've been wading through > the code for AGP and DRM support, but nothing jumps out at me.
> (http://www.matrox.com/mga/support/drivers/latest/home.htm)
As matrox driver contains large BLOB which does all important things (dualhead) usual practices about binary only software applies. Best regards, Petr Vandrovec vandrove@vc.cvut.cz
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