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authorAlex Deucher <alexdeucher@gmail.com>2010-08-18 21:34:11 +0400
committerDave Airlie <airlied@redhat.com>2010-08-20 02:48:55 +0400
commite57415d85f72e36029b75fdb556c95fb5346b692 (patch)
tree4df1b16a0c346529b6c7948282522d92aadb910b /drivers/gpu/drm/radeon/radeon_agp.c
parent09f0c489fa115a8b88a2da3edd0f3de00c8c7e2e (diff)
downloadlinux-e57415d85f72e36029b75fdb556c95fb5346b692.tar.xz
drm/radeon/kms: fix agp mode setup on cards that use pcie bridges
Asics that use an AGP to PCIE bridge don't have the AGP_STATUS register so just use whatever mode the host side setup. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Cc: Jerome Glisse <glisse@freedesktop.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_agp.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_agp.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_agp.c b/drivers/gpu/drm/radeon/radeon_agp.c
index f40dfb77f9b1..bd2f33e5c91a 100644
--- a/drivers/gpu/drm/radeon/radeon_agp.c
+++ b/drivers/gpu/drm/radeon/radeon_agp.c
@@ -156,7 +156,13 @@ int radeon_agp_init(struct radeon_device *rdev)
}
mode.mode = info.mode;
- agp_status = (RREG32(RADEON_AGP_STATUS) | RADEON_AGPv3_MODE) & mode.mode;
+ /* chips with the agp to pcie bridge don't have the AGP_STATUS register
+ * Just use the whatever mode the host sets up.
+ */
+ if (rdev->family <= CHIP_RV350)
+ agp_status = (RREG32(RADEON_AGP_STATUS) | RADEON_AGPv3_MODE) & mode.mode;
+ else
+ agp_status = mode.mode;
is_v3 = !!(agp_status & RADEON_AGPv3_MODE);
if (is_v3) {