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 --- drivers/gpu/drm/radeon/radeon_agp.c | 8 +++++++- 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 f40dfb7..bd2f33e 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) {