drm/i915/perf: introduce global sseu pinning

[linux-2.6-microblaze.git] / include / uapi / drm / i915_drm.h

diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index 829c0a4..db649d0 100644 (file)
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -1619,6 +1619,27 @@ struct drm_i915_gem_context_param {
  * By default, new contexts allow persistence.
  */
 #define I915_CONTEXT_PARAM_PERSISTENCE 0xb
+
+/*
+ * I915_CONTEXT_PARAM_RINGSIZE:
+ *
+ * Sets the size of the CS ringbuffer to use for logical ring contexts. This
+ * applies a limit of how many batches can be queued to HW before the caller
+ * is blocked due to lack of space for more commands.
+ *
+ * Only reliably possible to be set prior to first use, i.e. during
+ * construction. At any later point, the current execution must be flushed as
+ * the ring can only be changed while the context is idle. Note, the ringsize
+ * can be specified as a constructor property, see
+ * I915_CONTEXT_CREATE_EXT_SETPARAM, but can also be set later if required.
+ *
+ * Only applies to the current set of engine and lost when those engines
+ * are replaced by a new mapping (see I915_CONTEXT_PARAM_ENGINES).
+ *
+ * Must be between 4 - 512 KiB, in intervals of page size [4 KiB].
+ * Default is 16 KiB.
+ */
+#define I915_CONTEXT_PARAM_RINGSIZE    0xc
 /* Must be kept compact -- no holes and well documented */
 
        __u64 value;
@@ -1948,6 +1969,17 @@ 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,
+
        DRM_I915_PERF_PROP_MAX /* non-ABI */
 };