From 77b96ac0a74caf8fb620e38a91b7a8baea017b33 Mon Sep 17 00:00:00 2001
From: Connor Abbott <cwabbott0@gmail.com>
Date: Tue, 10 Jun 2025 14:21:26 -0400
Subject: [PATCH] tu: Add tu_bo_init_new_cached() helper

Unfortunately this has to live in tu_device.h because it depends on
accessing the physical_device.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35443>
---
 src/freedreno/vulkan/tu_device.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/freedreno/vulkan/tu_device.h b/src/freedreno/vulkan/tu_device.h
index 1c0509ff951..74428ff5c01 100644
--- a/src/freedreno/vulkan/tu_device.h
+++ b/src/freedreno/vulkan/tu_device.h
@@ -616,5 +616,22 @@ tu_dump_bo_init(struct tu_device *dev, struct tu_bo *bo);
 void
 tu_dump_bo_del(struct tu_device *dev, struct tu_bo *bo);
 
+/* Use cached-coherent when available, for faster CPU readback.
+ */
+static inline VkResult
+tu_bo_init_new_cached(struct tu_device *dev, struct vk_object_base *base,
+                      struct tu_bo **out_bo, uint64_t size,
+                      enum tu_bo_alloc_flags flags, const char *name)
+{
+   return tu_bo_init_new_explicit_iova(
+      dev, base, out_bo, size, 0,
+      VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT |
+         VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT |
+         VK_MEMORY_PROPERTY_HOST_COHERENT_BIT |
+         (dev->physical_device->has_cached_coherent_memory ? 
+          VK_MEMORY_PROPERTY_HOST_CACHED_BIT : 0),
+      flags, name);
+}
+
 
 #endif /* TU_DEVICE_H */