2.6.38-stable review patch. If anyone has any objections, please let us know.
------------------ flush when asked From: Alex Deucher <[email protected]> commit f25a5c63bfa017498c9adecb24d649ae96ba5c68 upstream. This needs to be explicitly set on btc. It's set by default on evergreen/fusion, so it fine to just unconditionally enable it for all chips. Signed-off-by: Alex Deucher <[email protected]> Signed-off-by: Dave Airlie <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/gpu/drm/radeon/evergreen.c | 6 +++++- drivers/gpu/drm/radeon/evergreend.h | 2 ++ 2 files changed, 7 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -1585,7 +1585,7 @@ static void evergreen_gpu_init(struct ra u32 sq_stack_resource_mgmt_2; u32 sq_stack_resource_mgmt_3; u32 vgt_cache_invalidation; - u32 hdp_host_path_cntl; + u32 hdp_host_path_cntl, tmp; int i, j, num_shader_engines, ps_thread_count; switch (rdev->family) { @@ -2145,6 +2145,10 @@ static void evergreen_gpu_init(struct ra for (i = SQ_ALU_CONST_BUFFER_SIZE_HS_0; i < 0x29000; i += 4) WREG32(i, 0); + tmp = RREG32(HDP_MISC_CNTL); + tmp |= HDP_FLUSH_INVALIDATE_CACHE; + WREG32(HDP_MISC_CNTL, tmp); + hdp_host_path_cntl = RREG32(HDP_HOST_PATH_CNTL); WREG32(HDP_HOST_PATH_CNTL, hdp_host_path_cntl); --- a/drivers/gpu/drm/radeon/evergreend.h +++ b/drivers/gpu/drm/radeon/evergreend.h @@ -64,6 +64,8 @@ #define GB_BACKEND_MAP 0x98FC #define DMIF_ADDR_CONFIG 0xBD4 #define HDP_ADDR_CONFIG 0x2F48 +#define HDP_MISC_CNTL 0x2F4C +#define HDP_FLUSH_INVALIDATE_CACHE (1 << 0) #define CC_SYS_RB_BACKEND_DISABLE 0x3F88 #define GC_USER_RB_BACKEND_DISABLE 0x9B7C _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
