[igt-dev] [PATCH i-g-t 1/3] include/drm-uapi: Update i915_drm.h for perf OA APIs

Umesh Nerlige Ramappa
2020-03-19T22:52:56Z

From: Lionel Landwerlin <lionel.g.landwerlin@intel.com>

Add APIs to configure poll delay in perf OA.

v2: (Umesh)
- Remove interrupt and flush APIs
- Change commit message

v3: (Umesh)
- Rebase
- Rename uapi parameter used to set poll timer interval

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
---
include/drm-uapi/i915_drm.h | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)

diff --git a/include/drm-uapi/i915_drm.h b/include/drm-uapi/i915_drm.h
index 3794e768..594a42d1 100644
--- a/include/drm-uapi/i915_drm.h
+++ b/include/drm-uapi/i915_drm.h
@@ -1969,6 +1969,30 @@ enum drm_i915_perf_property_id {
*/
DRM_I915_PERF_PROP_HOLD_PREEMPTION,

+ /**
+ * Specifying this pins all contexts to the specified SSEU power
+ * configuration for the duration of the recording.
+ *
+ * This parameter's value is a pointer to a struct
+ * drm_i915_gem_context_param_sseu.
+ *
+ * This property is available in perf revision 4.
+ */
+ DRM_I915_PERF_PROP_GLOBAL_SSEU,
+
+ /**
+ * This optional parameter specifies the timer interval in nanoseconds
+ * at which the i915 driver will check the OA buffer for available data.
+ * Minimum allowed value is 100 microseconds. A default value is used by
+ * the driver if this parameter is not specified. Note that a large
+ * value may reduce cpu consumption during OA perf captures, but it
+ * would also potentially result in OA buffer overwrite as the captures
+ * reach end of the OA buffer.
+ *
+ * This property is available in perf revision 5.
+ */
+ DRM_I915_PERF_PROP_POLL_OA_PERIOD,
+
DRM_I915_PERF_PROP_MAX /* non-ABI */
};

--
2.20.1