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, 18 insertions, 0 deletions

diff --git a/src/intel/vulkan/anv_queue.c b/src/intel/vulkan/anv_queue.c
index 6e275629e14..e0c0a42069f 100644
--- a/src/intel/vulkan/anv_queue.c
+++ b/src/intel/vulkan/anv_queue.c
@@ -324,6 +324,10 @@ anv_fence_impl_cleanup(struct anv_device *device,
       anv_gem_syncobj_destroy(device, impl->syncobj);
       break;
 
+   case ANV_FENCE_TYPE_WSI:
+      impl->fence_wsi->destroy(impl->fence_wsi);
+      break;
+
    default:
       unreachable("Invalid fence type");
    }
@@ -674,6 +678,17 @@ done:
 }
 
 static VkResult
+anv_wait_for_wsi_fence(struct anv_device *device,
+                       const VkFence _fence,
+                       uint64_t abs_timeout)
+{
+   ANV_FROM_HANDLE(anv_fence, fence, _fence);
+   struct anv_fence_impl *impl = &fence->permanent;
+
+   return impl->fence_wsi->wait(impl->fence_wsi, abs_timeout);
+}
+
+static VkResult
 anv_wait_for_fences(struct anv_device *device,
                     uint32_t fenceCount,
                     const VkFence *pFences,
@@ -695,6 +710,9 @@ anv_wait_for_fences(struct anv_device *device,
             result = anv_wait_for_syncobj_fences(device, 1, &pFences[i],
                                                  true, abs_timeout);
             break;
+         case ANV_FENCE_TYPE_WSI:
+            result = anv_wait_for_wsi_fence(device, pFences[i], abs_timeout);
+            break;
          case ANV_FENCE_TYPE_NONE:
             result = VK_SUCCESS;
             break;