anv: add VK_EXT_display_control to anv driver [v5]

This extension provides fences and frame count information to direct
display contexts. It uses new kernel ioctls to provide 64-bits of
vblank sequence and nanosecond resolution.

v2:	Adopt Jason Ekstrand's coding conventions

	Declare variables at first use, eliminate extra whitespace between
	types and names. Wrap lines to 80 columns.

	Add extension to list in alphabetical order

	Suggested-by: Jason Ekstrand <[email protected]>

v3:	Adapt to WSI fence API change. It now returns VkResult and
	no longer has an option for relative timeouts.

v4:	wsi_register_display_event and wsi_register_device_event now
	use the default allocator when NULL is provided, so remove the
	computation of 'alloc' here.

v5:	use zalloc2 instead of alloc2 for the WSI fence.

	Suggested-by: Jason Ekstrand <[email protected]>

Signed-off-by: Keith Packard <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>

1 files changed, 85 insertions, 0 deletions

diff --git a/src/intel/vulkan/anv_wsi_display.c b/src/intel/vulkan/anv_wsi_display.c
index ed679e85e13..94e16010463 100644
--- a/src/intel/vulkan/anv_wsi_display.c
+++ b/src/intel/vulkan/anv_wsi_display.c
@@ -174,3 +174,88 @@ anv_GetRandROutputDisplayEXT(VkPhysicalDevice  physical_device,
                                        display);
 }
 #endif /* VK_USE_PLATFORM_XLIB_XRANDR_EXT */
+
+/* VK_EXT_display_control */
+
+VkResult
+anv_DisplayPowerControlEXT(VkDevice                    _device,
+                            VkDisplayKHR                display,
+                            const VkDisplayPowerInfoEXT *display_power_info)
+{
+   ANV_FROM_HANDLE(anv_device, device, _device);
+
+   return wsi_display_power_control(
+      _device, &device->instance->physicalDevice.wsi_device,
+      display, display_power_info);
+}
+
+VkResult
+anv_RegisterDeviceEventEXT(VkDevice _device,
+                            const VkDeviceEventInfoEXT *device_event_info,
+                            const VkAllocationCallbacks *allocator,
+                            VkFence *_fence)
+{
+   ANV_FROM_HANDLE(anv_device, device, _device);
+   struct anv_fence *fence;
+   VkResult ret;
+
+   fence = vk_zalloc2(&device->instance->alloc, allocator, sizeof (*fence), 8,
+                      VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
+   if (!fence)
+      return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
+
+   fence->permanent.type = ANV_FENCE_TYPE_WSI;
+
+   ret = wsi_register_device_event(_device,
+                                   &device->instance->physicalDevice.wsi_device,
+                                   device_event_info,
+                                   allocator,
+                                   &fence->permanent.fence_wsi);
+   if (ret == VK_SUCCESS)
+      *_fence = anv_fence_to_handle(fence);
+   else
+      vk_free2(&device->instance->alloc, allocator, fence);
+   return ret;
+}
+
+VkResult
+anv_RegisterDisplayEventEXT(VkDevice _device,
+                             VkDisplayKHR display,
+                             const VkDisplayEventInfoEXT *display_event_info,
+                             const VkAllocationCallbacks *allocator,
+                             VkFence *_fence)
+{
+   ANV_FROM_HANDLE(anv_device, device, _device);
+   struct anv_fence *fence;
+   VkResult ret;
+
+   fence = vk_zalloc2(&device->alloc, allocator, sizeof (*fence), 8,
+                      VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
+   if (!fence)
+      return VK_ERROR_OUT_OF_HOST_MEMORY;
+
+   fence->permanent.type = ANV_FENCE_TYPE_WSI;
+
+   ret = wsi_register_display_event(
+      _device, &device->instance->physicalDevice.wsi_device,
+      display, display_event_info, allocator, &(fence->permanent.fence_wsi));
+
+   if (ret == VK_SUCCESS)
+      *_fence = anv_fence_to_handle(fence);
+   else
+      vk_free2(&device->alloc, allocator, fence);
+   return ret;
+}
+
+VkResult
+anv_GetSwapchainCounterEXT(VkDevice _device,
+                            VkSwapchainKHR swapchain,
+                            VkSurfaceCounterFlagBitsEXT flag_bits,
+                            uint64_t *value)
+{
+   ANV_FROM_HANDLE(anv_device, device, _device);
+
+   return wsi_get_swapchain_counter(
+      _device, &device->instance->physicalDevice.wsi_device,
+      swapchain, flag_bits, value);
+}