From: "Yang, Dong" <dong.yang@xxxxxxxxx>
Broxton steppings starting from GT E0 have fixed the bug, remove
WA since stepping GT E0.
v2: add comment in code, by:
Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Signed-off-by: Yang, Dong <dong.yang@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 5f3e5c13fbaa..a0dfd1926b1b 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2141,6 +2141,8 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
#define BXT_REVID_B0 0x3
#define BXT_REVID_B_LAST 0x8
#define BXT_REVID_C0 0x9
+#define BXT_REVID_D0 0xC
+#define BXT_REVID_E0 0xD
#define IS_BXT_REVID(dev_priv, since, until) \
(IS_BROXTON(dev_priv) && IS_REVID(dev_priv, since, until))
@@ -2357,7 +2359,8 @@ static inline bool intel_scanout_needs_vtd_wa(struct drm_i915_private *dev_priv)
static inline bool
intel_ggtt_update_needs_vtd_wa(struct drm_i915_private *dev_priv)
{
- return IS_BROXTON(dev_priv) && intel_vtd_active();
+ /* Broxton steppings starting from E0 have fixed the bug. */
+ return IS_BXT_REVID(dev_priv, 0, BXT_REVID_D0) && intel_vtd_active();
}
/* i915_drv.c */
--
2.22.0
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