drm/i915/gen9: Always apply WaForceContextSaveRestoreNonCoherent

The revision id range for this workaround has changed. So apply
it to all revids on all gen9.

References: HSD#2134449
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-6-git-send-email-mika.kuoppala@intel.com
(cherry picked from commit 5b0e3659296cc4a1484e60640ef10780194a195b)
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index bcd9e70..e6fa1e6 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -913,7 +913,6 @@ static int gen9_init_workarounds(struct intel_engine_cs *engine)
 {
        struct drm_device *dev = engine->dev;
        struct drm_i915_private *dev_priv = dev->dev_private;
-       uint32_t tmp;
        int ret;
 
        /* WaEnableLbsSlaRetryTimerDecrement:skl,bxt,kbl */
@@ -973,12 +972,10 @@ static int gen9_init_workarounds(struct intel_engine_cs *engine)
                WA_SET_BIT_MASKED(SLICE_ECO_CHICKEN0,
                                  PIXEL_MASK_CAMMING_DISABLE);
 
-       /* WaForceContextSaveRestoreNonCoherent:skl,bxt */
-       tmp = HDC_FORCE_CONTEXT_SAVE_RESTORE_NON_COHERENT;
-       if (IS_SKL_REVID(dev, SKL_REVID_F0, REVID_FOREVER) ||
-           IS_BXT_REVID(dev, BXT_REVID_B0, REVID_FOREVER))
-               tmp |= HDC_FORCE_CSR_NON_COHERENT_OVR_DISABLE;
-       WA_SET_BIT_MASKED(HDC_CHICKEN0, tmp);
+       /* WaForceContextSaveRestoreNonCoherent:skl,bxt,kbl */
+       WA_SET_BIT_MASKED(HDC_CHICKEN0,
+                         HDC_FORCE_CONTEXT_SAVE_RESTORE_NON_COHERENT |
+                         HDC_FORCE_CSR_NON_COHERENT_OVR_DISABLE);
 
        /* WaDisableSamplerPowerBypassForSOPingPong:skl,bxt,kbl */
        if (IS_SKYLAKE(dev_priv) ||