From 61cf059325a30995a78c5001db2ed2a8ab1d4c36 Mon Sep 17 00:00:00 2001 From: Jerome Glisse Date: Tue, 20 Apr 2010 17:43:34 +0200 Subject: agp: use scratch page on memory remove and at GATT creation V4 Convert most AGP chipset to use scratch page as default entries. This help avoiding GPU querying 0 address and trigger computer fault. With KMS and memory manager we bind/unbind AGP memory constantly and it seems that some GPU are still doing AGP traffic even after GPU report being idle with the memory segment. Tested (radeon GPU KMS + Xorg + compiz + glxgears + quake3) on : - SIS 1039:0001 & 1039:0003 - Intel 865 8086:2571 Compile tested for other bridges V2 enable scratch page on uninorth V3 fix unbound check in uninorth insert memory (Michel Dänzer) V4 rebase on top of drm-next branch with the lastest intel AGP changeset (stable should use version V3 of the patch) Signed-off-by: Jerome Glisse Signed-off-by: Michel Dänzer Signed-off-by: Dave Airlie --- drivers/char/agp/amd64-agp.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/char/agp/amd64-agp.c') diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c index fd50ead59c79..73703b115cd2 100644 --- a/drivers/char/agp/amd64-agp.c +++ b/drivers/char/agp/amd64-agp.c @@ -210,6 +210,7 @@ static const struct agp_bridge_driver amd_8151_driver = { .aperture_sizes = amd_8151_sizes, .size_type = U32_APER_SIZE, .num_aperture_sizes = 7, + .needs_scratch_page = true, .configure = amd_8151_configure, .fetch_size = amd64_fetch_size, .cleanup = amd64_cleanup, -- cgit v1.2.3-55-g7522