[Mesa-dev] [HACK 19/21] anv: Set context priorities based on queue priorities

[Jason Ekstrand]

This patch will never be committed because Vulkan queue priorities are
supposed to be local to the device and not cross process boundaries.

---
 src/intel/vulkan/anv_device.c    | 12 ++++++++++++
 src/intel/vulkan/anv_gem.c       | 13 +++++++++++++
 src/intel/vulkan/anv_gem_stubs.c |  7 +++++++
 src/intel/vulkan/anv_private.h   |  2 ++
 4 files changed, 34 insertions(+)

diff --git a/src/intel/vulkan/anv_device.c b/src/intel/vulkan/anv_device.c
index 2885bb6..f853905 100644
--- a/src/intel/vulkan/anv_device.c
+++ b/src/intel/vulkan/anv_device.c
@@ -1068,6 +1068,18 @@ VkResult anv_CreateDevice(
       goto fail_fd;
    }
 
+   if (pCreateInfo->pQueueCreateInfos &&
+       pCreateInfo->pQueueCreateInfos->pQueuePriorities) {
+      float priority = *pCreateInfo->pQueueCreateInfos->pQueuePriorities;
+      int kernel_priority = 1023 * priority - 1023;
+      int ret = anv_gem_set_context_param(device, 6, kernel_priority);
+      if (ret == -1) {
+         result = vk_errorf(VK_ERROR_INITIALIZATION_FAILED,
+                            "Setting I915_CONTEXT_PARAM_PRIORITY failed: %m");
+         goto fail_fd;
+      }
+   }
+
    device->info = physical_device->info;
    device->isl_dev = physical_device->isl_dev;
 
diff --git a/src/intel/vulkan/anv_gem.c b/src/intel/vulkan/anv_gem.c
index ffdc5a1..e331fbb 100644
--- a/src/intel/vulkan/anv_gem.c
+++ b/src/intel/vulkan/anv_gem.c
@@ -231,6 +231,19 @@ anv_gem_get_param(int fd, uint32_t param)
    return 0;
 }
 
+int
+anv_gem_set_context_param(struct anv_device *device,
+                          uint64_t param, uint64_t value)
+{
+   struct drm_i915_gem_context_param args = {
+      .ctx_id = device->context_id,
+      .param = param,
+      .value = value,
+   };
+
+   return anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_CONTEXT_SETPARAM, &args);
+}
+
 bool
 anv_gem_get_bit6_swizzle(int fd, uint32_t tiling)
 {
diff --git a/src/intel/vulkan/anv_gem_stubs.c b/src/intel/vulkan/anv_gem_stubs.c
index a63e96d..d93009f 100644
--- a/src/intel/vulkan/anv_gem_stubs.c
+++ b/src/intel/vulkan/anv_gem_stubs.c
@@ -126,6 +126,13 @@ anv_gem_get_param(int fd, uint32_t param)
    unreachable("Unused");
 }
 
+int
+anv_gem_set_context_param(struct anv_device *device,
+                          uint64_t param, uint64_t value)
+{
+   unreachable("Unused");
+}
+
 bool
 anv_gem_get_bit6_swizzle(int fd, uint32_t tiling)
 {
diff --git a/src/intel/vulkan/anv_private.h b/src/intel/vulkan/anv_private.h
index a083a07..b99c93c 100644
--- a/src/intel/vulkan/anv_private.h
+++ b/src/intel/vulkan/anv_private.h
@@ -800,6 +800,8 @@ int anv_gem_set_caching(struct anv_device *device, uint32_t gem_handle, uint32_t
 int anv_gem_set_domain(struct anv_device *device, uint32_t gem_handle,
                        uint32_t read_domains, uint32_t write_domain);
 int anv_gem_sync_file_merge(struct anv_device *device, int fd1, int fd2);
+int anv_gem_set_context_param(struct anv_device *device,
+                              uint64_t param, uint64_t value);
 
 VkResult anv_bo_init_new(struct anv_bo *bo, struct anv_device *device, uint64_t size);
 
-- 
2.5.0.400.gff86faf