diff mbox series

[v7,2/3] drm/i915: whitelist PS_(DEPTH|INVOCATION)_COUNT

Message ID 20190628120720.21682-3-lionel.g.landwerlin@intel.com (mailing list archive)
State New, archived
Headers show
Series drm/i915: CTS fixes | expand

Commit Message

Lionel Landwerlin June 28, 2019, 12:07 p.m. UTC
CFL:C0+ changed the status of those registers which are now
blacklisted by default.

This is breaking a number of CTS tests on GL & Vulkan :

  KHR-GL45.pipeline_statistics_query_tests_ARB.functional_fragment_shader_invocations (GL)

  dEQP-VK.query_pool.statistics_query.fragment_shader_invocations.* (Vulkan)

v2: Only use one whitelist entry (Lionel)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: stable@vger.kernel.org
---
 drivers/gpu/drm/i915/gt/intel_workarounds.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

Comments

Chris Wilson July 2, 2019, 11:13 a.m. UTC | #1
Quoting Lionel Landwerlin (2019-06-28 13:07:19)
> CFL:C0+ changed the status of those registers which are now
> blacklisted by default.
> 
> This is breaking a number of CTS tests on GL & Vulkan :
> 
>   KHR-GL45.pipeline_statistics_query_tests_ARB.functional_fragment_shader_invocations (GL)
> 
>   dEQP-VK.query_pool.statistics_query.fragment_shader_invocations.* (Vulkan)
> 
> v2: Only use one whitelist entry (Lionel)

Bspec: 14091
> Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
> Cc: stable@vger.kernel.org
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
-Chris
Mika Kuoppala July 2, 2019, 12:16 p.m. UTC | #2
Chris Wilson <chris@chris-wilson.co.uk> writes:

> Quoting Lionel Landwerlin (2019-06-28 13:07:19)
>> CFL:C0+ changed the status of those registers which are now
>> blacklisted by default.
>> 
>> This is breaking a number of CTS tests on GL & Vulkan :
>> 
>>   KHR-GL45.pipeline_statistics_query_tests_ARB.functional_fragment_shader_invocations (GL)
>> 
>>   dEQP-VK.query_pool.statistics_query.fragment_shader_invocations.* (Vulkan)
>> 
>> v2: Only use one whitelist entry (Lionel)
>
> Bspec: 14091

Sometimes we have optionally used References: BSID#0934 to
mark the workaround. But it feels a tad redudant now.

>> Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
>> Cc: stable@vger.kernel.org
> Acked-by: Chris Wilson <chris@chris-wilson.co.uk>

Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 993804d09517..b117583e38bb 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -1092,10 +1092,25 @@  static void glk_whitelist_build(struct intel_engine_cs *engine)
 
 static void cfl_whitelist_build(struct intel_engine_cs *engine)
 {
+	struct i915_wa_list *w = &engine->whitelist;
+
 	if (engine->class != RENDER_CLASS)
 		return;
 
-	gen9_whitelist_build(&engine->whitelist);
+	gen9_whitelist_build(w);
+
+	/*
+	 * WaAllowPMDepthAndInvocationCountAccessFromUMD:cfl,whl,cml,aml
+	 *
+	 * This covers 4 register which are next to one another :
+	 *   - PS_INVOCATION_COUNT
+	 *   - PS_INVOCATION_COUNT_UDW
+	 *   - PS_DEPTH_COUNT
+	 *   - PS_DEPTH_COUNT_UDW
+	 */
+	whitelist_reg_ext(w, PS_INVOCATION_COUNT,
+			  RING_FORCE_TO_NONPRIV_RD |
+			  RING_FORCE_TO_NONPRIV_RANGE_4);
 }
 
 static void cnl_whitelist_build(struct intel_engine_cs *engine)