drm/i915: Whitelist COMMON_SLICE_CHICKEN2
This allows userspace to use "legacy" mode for push constants, where
they are committed at 3DPRIMITIVE or flush time, rather than being
committed at 3DSTATE_BINDING_TABLE_POINTERS_XS time. Gen6-8 and Gen11
both use the "legacy" behavior - only Gen9 works in the "new" way.
Conflating push constants with binding tables is painful for userspace,
we would like to be able to avoid doing so.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: stable@vger.kernel.org
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190911014801.26821-1-kenneth@whitecape.org
(cherry picked from commit 0606259e3b
)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
parent
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@ -1063,6 +1063,9 @@ static void gen9_whitelist_build(struct i915_wa_list *w)
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/* WaAllowUMDToModifyHDCChicken1:skl,bxt,kbl,glk,cfl */
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whitelist_reg(w, GEN8_HDC_CHICKEN1);
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/* WaSendPushConstantsFromMMIO:skl,bxt */
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whitelist_reg(w, COMMON_SLICE_CHICKEN2);
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}
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static void skl_whitelist_build(struct intel_engine_cs *engine)
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