drm/i915: Disable MI_STORE_DATA_IMM for i915g/i915gm
The early gen3 machines (i915g/Grantsdale and i915gm/Alviso) share a lot
of characteristics in their MI/GTT blocks with gen2, and in particular
can only use physical addresses in MI_STORE_DATA_IMM. This makes it
incompatible with our usage, so include those two machines in the
blacklist to prevent usage.
v2: Make it easy for gcc and rewrite it as a switch to save some space.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> #v1
Link: https://patchwork.freedesktop.org/patch/msgid/20170906152859.5304-1-chris@chris-wilson.co.uk
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 02d8974..79c0021 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -735,16 +735,6 @@ bool intel_engines_are_idle(struct drm_i915_private *dev_priv);
void intel_engines_mark_idle(struct drm_i915_private *i915);
void intel_engines_reset_default_submission(struct drm_i915_private *i915);
-static inline bool
-__intel_engine_can_store_dword(unsigned int gen, unsigned int class)
-{
- if (gen <= 2)
- return false; /* uses physical not virtual addresses */
-
- if (gen == 6 && class == VIDEO_DECODE_CLASS)
- return false; /* b0rked */
-
- return true;
-}
+bool intel_engine_can_store_dword(struct intel_engine_cs *engine);
#endif /* _INTEL_RINGBUFFER_H_ */