drm/i915: Whitelist SLICE_COMMON_ECO_CHICKEN1 on Geminilake.

[sfrench/cifs-2.6.git] / drivers / gpu / drm / i915 / intel_engine_cs.c

diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index ab5bf4e2e28e21f3daa7072a37cb6895aba8233c..6074e04dc99fca3d269d78ac2aa4e9159e78aedb 100644 (file)
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -1390,6 +1390,11 @@ static int glk_init_workarounds(struct intel_engine_cs *engine)
        if (ret)
                return ret;
 
+       /* WA #0862: Userspace has to set "Barrier Mode" to avoid hangs. */
+       ret = wa_ring_whitelist_reg(engine, GEN9_SLICE_COMMON_ECO_CHICKEN1);
+       if (ret)
+               return ret;
+
        /* WaToEnableHwFixForPushConstHWBug:glk */
        WA_SET_BIT_MASKED(COMMON_SLICE_CHICKEN2,
                          GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION);