3 files changed, 46 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_bufmgr.c b/src/mesa/drivers/dri/i965/brw_bufmgr.c
index 7c5a9651eba..17036b53bcd 100644
--- a/src/mesa/drivers/dri/i965/brw_bufmgr.c
+++ b/src/mesa/drivers/dri/i965/brw_bufmgr.c
@@ -1299,6 +1299,25 @@ brw_create_hw_context(struct brw_bufmgr *bufmgr)
    return create.ctx_id;
 }
 
+int
+brw_hw_context_set_priority(struct brw_bufmgr *bufmgr,
+                            uint32_t ctx_id,
+                            int priority)
+{
+   struct drm_i915_gem_context_param p = {
+      .ctx_id = ctx_id,
+      .param = I915_CONTEXT_PARAM_PRIORITY,
+      .value = priority,
+   };
+   int err;
+
+   err = 0;
+   if (drmIoctl(bufmgr->fd, DRM_IOCTL_I915_GEM_CONTEXT_SETPARAM, &p))
+      err = -errno;
+
+   return err;
+}
+
 void
 brw_destroy_hw_context(struct brw_bufmgr *bufmgr, uint32_t ctx_id)
 {
diff --git a/src/mesa/drivers/dri/i965/brw_bufmgr.h b/src/mesa/drivers/dri/i965/brw_bufmgr.h
index de0ba1dad14..ee913240432 100644
--- a/src/mesa/drivers/dri/i965/brw_bufmgr.h
+++ b/src/mesa/drivers/dri/i965/brw_bufmgr.h
@@ -322,6 +322,15 @@ void brw_bufmgr_enable_reuse(struct brw_bufmgr *bufmgr);
 int brw_bo_wait(struct brw_bo *bo, int64_t timeout_ns);
 
 uint32_t brw_create_hw_context(struct brw_bufmgr *bufmgr);
+
+#define BRW_CONTEXT_LOW_PRIORITY ((I915_CONTEXT_MIN_USER_PRIORITY-1)/2)
+#define BRW_CONTEXT_MEDIUM_PRIORITY (I915_CONTEXT_DEFAULT_PRIORITY)
+#define BRW_CONTEXT_HIGH_PRIORITY ((I915_CONTEXT_MAX_USER_PRIORITY+1)/2)
+
+int brw_hw_context_set_priority(struct brw_bufmgr *bufmgr,
+                                uint32_t ctx_id,
+                                int priority);
+
 void brw_destroy_hw_context(struct brw_bufmgr *bufmgr, uint32_t ctx_id);
 
 int brw_bo_gem_export_to_prime(struct brw_bo *bo, int *prime_fd);
diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
index a86367cc46b..c8de0746387 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -956,6 +956,24 @@ brwCreateContext(gl_api api,
          intelDestroyContext(driContextPriv);
          return false;
       }
+
+      int hw_priority = BRW_CONTEXT_MEDIUM_PRIORITY;
+      switch (priority) {
+      case __DRI_CTX_PRIORITY_LOW:
+         hw_priority = BRW_CONTEXT_LOW_PRIORITY;
+         break;
+      case __DRI_CTX_PRIORITY_HIGH:
+         hw_priority = BRW_CONTEXT_HIGH_PRIORITY;
+         break;
+      }
+      if (hw_priority != I915_CONTEXT_DEFAULT_PRIORITY &&
+          brw_hw_context_set_priority(brw->bufmgr, brw->hw_ctx, hw_priority)) {
+         fprintf(stderr,
+		 "Failed to set priority [%d:%d] for hardware context.\n",
+                 priority, hw_priority);
+         intelDestroyContext(driContextPriv);
+         return false;
+      }
    }
 
    if (brw_init_pipe_control(brw, devinfo)) {