3.5.7.6 -stable review patch. If anyone has any objections, please let me know.
------------------ From: Alex Deucher <alexander.deuc...@amd.com> commit f7eb97300832f4fe5fe916c5d84cd2e25169330e upstream. Need to adjust the backend map depending on which RB is enabled. Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=892233 Reported-by: Mikko Tiihonen <mikko.tiiho...@iki.fi> Signed-off-by: Alex Deucher <alexander.deuc...@amd.com> [ herton: adjust context ] Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesin...@canonical.com> --- drivers/gpu/drm/radeon/evergreen.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index c490d16..4170e1e 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -1861,9 +1861,20 @@ static void evergreen_gpu_init(struct radeon_device *rdev) WREG32(DMIF_ADDR_CONFIG, gb_addr_config); WREG32(HDP_ADDR_CONFIG, gb_addr_config); - tmp = gb_addr_config & NUM_PIPES_MASK; - tmp = r6xx_remap_render_backend(rdev, tmp, rdev->config.evergreen.max_backends, - EVERGREEN_MAX_BACKENDS, disabled_rb_mask); + if ((rdev->config.evergreen.max_backends == 1) && + (rdev->flags & RADEON_IS_IGP)) { + if ((disabled_rb_mask & 3) == 1) { + /* RB0 disabled, RB1 enabled */ + tmp = 0x11111111; + } else { + /* RB1 disabled, RB0 enabled */ + tmp = 0x00000000; + } + } else { + tmp = gb_addr_config & NUM_PIPES_MASK; + tmp = r6xx_remap_render_backend(rdev, tmp, rdev->config.evergreen.max_backends, + EVERGREEN_MAX_BACKENDS, disabled_rb_mask); + } WREG32(GB_BACKEND_MAP, tmp); WREG32(CGTS_SYS_TCC_DISABLE, 0); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
