diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-09-06 18:28:59 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-09-06 19:36:30 +0300 |
| commit | 90cad095eeaa43711d60066096cddaf0d3b58bf6 (patch) | |
| tree | 4c368d32140891a2bc8132a08a2fb1f374bf4b5d /drivers/gpu/drm/i915/intel_engine_cs.c | |
| parent | 0db8c961209153498fe7e279b8f0d3deb81808f0 (diff) | |
| download | linux-90cad095eeaa43711d60066096cddaf0d3b58bf6.tar.xz | |
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
Diffstat (limited to 'drivers/gpu/drm/i915/intel_engine_cs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_engine_cs.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c index ae668340620e..23812ec23969 100644 --- a/drivers/gpu/drm/i915/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/intel_engine_cs.c @@ -1378,6 +1378,21 @@ void intel_engines_mark_idle(struct drm_i915_private *i915) } } +bool intel_engine_can_store_dword(struct intel_engine_cs *engine) +{ + switch (INTEL_GEN(engine->i915)) { + case 2: + return false; /* uses physical not virtual addresses */ + case 3: + /* maybe only uses physical not virtual addresses */ + return !(IS_I915G(engine->i915) || IS_I915GM(engine->i915)); + case 6: + return engine->class != VIDEO_DECODE_CLASS; /* b0rked */ + default: + return true; + } +} + #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) #include "selftests/mock_engine.c" #endif |