Mesa (main): winsys/amdgpu: add uncached flag to the imported DRI_PRIME buffer

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Module: Mesa
Branch: main
Commit: 8791e831b115b916f39ed46b497a2bcaada8b10a
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=8791e831b115b916f39ed46b497a2bcaada8b10a

Author: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer at amd.com>
Date:   Thu Oct 14 15:16:31 2021 +0200

winsys/amdgpu: add uncached flag to the imported DRI_PRIME buffer

There's no point in caching this linear buffer since we're only
ever writing to it.

Reviewed-by: Marek Olšák <marek.olsak at amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13362>

---

 src/gallium/winsys/amdgpu/drm/amdgpu_bo.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
index e1b14b71060..4c4096f98ca 100644
--- a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
+++ b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
@@ -1558,7 +1558,11 @@ static struct pb_buffer *amdgpu_bo_from_handle(struct radeon_winsys *rws,
    if (!bo)
       goto error;
 
-   r = amdgpu_bo_va_op(result.buf_handle, 0, result.alloc_size, va, 0, AMDGPU_VA_OP_MAP);
+   r = amdgpu_bo_va_op_raw(ws->dev, result.buf_handle, 0, result.alloc_size, va,
+                           AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE |
+                           AMDGPU_VM_PAGE_EXECUTABLE |
+                           (is_prime_linear_buffer ? AMDGPU_VM_MTYPE_UC : 0),
+                           AMDGPU_VA_OP_MAP);
    if (r)
       goto error;