3.2.55-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Alex Deucher <alexander.deuc...@amd.com> commit 8333f0fe133be420ce3fcddfd568c3a559ab274e upstream. Some RS690 boards with 64MB of sideport memory show up as having 128MB sideport + 256MB of UMA. In this case, just skip the sideport memory and use UMA. This fixes rendering corruption and should improve performance. bug: https://bugs.freedesktop.org/show_bug.cgi?id=35457 Signed-off-by: Alex Deucher <alexander.deuc...@amd.com> [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings <b...@decadent.org.uk> --- drivers/gpu/drm/radeon/rs690.c | 10 ++++++++++ 1 file changed, 10 insertions(+) --- a/drivers/gpu/drm/radeon/rs690.c +++ b/drivers/gpu/drm/radeon/rs690.c @@ -160,6 +160,16 @@ void rs690_mc_init(struct radeon_device base = RREG32_MC(R_000100_MCCFG_FB_LOCATION); base = G_000100_MC_FB_START(base) << 16; rdev->mc.igp_sideport_enabled = radeon_atombios_sideport_present(rdev); + /* Some boards seem to be configured for 128MB of sideport memory, + * but really only have 64MB. Just skip the sideport and use + * UMA memory. + */ + if (rdev->mc.igp_sideport_enabled && + (rdev->mc.real_vram_size == (384 * 1024 * 1024))) { + base += 128 * 1024 * 1024; + rdev->mc.real_vram_size -= 128 * 1024 * 1024; + rdev->mc.mc_vram_size = rdev->mc.real_vram_size; + } rs690_pm_info(rdev); radeon_vram_location(rdev, &rdev->mc, base); rdev->mc.gtt_base_align = rdev->mc.gtt_size - 1; -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
