drm/i915: WaEnableForceRestoreInCtxtDescForVCS is for video engines only

Also check for correct revision id in each Gen9 platform (SKL until B0
and BXT until A0).

Cc: Nick Hoath <nicholas.hoath@intel.com>
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Arun Siluvery <arun.siluvery@linux.intel.com>
Tested-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 28a712e..d8b605f 100644 (file)
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -301,10 +301,10 @@ uint64_t intel_lr_context_descriptor(struct intel_context *ctx,
        /* desc |= GEN8_CTX_FORCE_RESTORE; */
 
        /* WaEnableForceRestoreInCtxtDescForVCS:skl */
-       if (IS_GEN9(dev) &&
-           INTEL_REVID(dev) <= SKL_REVID_B0 &&
-           (ring->id == BCS || ring->id == VCS ||
-           ring->id == VECS || ring->id == VCS2))
+       /* WaEnableForceRestoreInCtxtDescForVCS:bxt */
+       if (((IS_SKYLAKE(dev) && INTEL_REVID(dev) <= SKL_REVID_B0) ||
+            (IS_BROXTON(dev) && INTEL_REVID(dev) == BXT_REVID_A0)) &&
+           (ring->id == VCS || ring->id == VCS2))
                desc |= GEN8_CTX_FORCE_RESTORE;
 
        return desc;