Hi guys,
CCing: dri-devel.
question to the usual suspects here: Does somebody of hand knows when
DRM_RDWR was added and how we can check reliable if it's available or not?
Using the version number of amdgpu for this sounds a bit questionable,
cause that reflects amdgpu functionality level and not DRM prime
functionality level.
Thanks,
Christian.
Am 17.04.2018 um 10:48 schrieb Qiang Yu:
For kernel < 4.6 drm_prime_handle_to_fd_ioctl won't
accept DRM_RDWR.
Sigend-off-by: Qiang Yu <qiang...@amd.com>
---
amdgpu/amdgpu_bo.c | 8 ++++++--
amdgpu/amdgpu_internal.h | 2 ++
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c
index 9e37b14..17f848f 100644
--- a/amdgpu/amdgpu_bo.c
+++ b/amdgpu/amdgpu_bo.c
@@ -229,6 +229,7 @@ int amdgpu_bo_export(amdgpu_bo_handle bo,
uint32_t *shared_handle)
{
int r;
+ uint32_t flags;
switch (type) {
case amdgpu_bo_handle_type_gem_flink_name:
@@ -246,8 +247,11 @@ int amdgpu_bo_export(amdgpu_bo_handle bo,
case amdgpu_bo_handle_type_dma_buf_fd:
amdgpu_add_handle_to_table(bo);
- return drmPrimeHandleToFD(bo->dev->fd, bo->handle,
- DRM_CLOEXEC | DRM_RDWR,
+ flags = DRM_CLOEXEC;
+ if (AMDGPU_VERSION(bo->dev->major_version, bo->dev->minor_version)
>=
+ AMDGPU_VERSION(3, 1))
+ flags |= DRM_RDWR;
+ return drmPrimeHandleToFD(bo->dev->fd, bo->handle, flags,
(int*)shared_handle);
}
return -EINVAL;
diff --git a/amdgpu/amdgpu_internal.h b/amdgpu/amdgpu_internal.h
index 99b8ce0..09f5036 100644
--- a/amdgpu/amdgpu_internal.h
+++ b/amdgpu/amdgpu_internal.h
@@ -39,6 +39,8 @@
#define ROUND_UP(x, y) ((((x)-1) | __round_mask(x, y))+1)
#define ROUND_DOWN(x, y) ((x) & ~__round_mask(x, y))
+#define AMDGPU_VERSION(major, minor) ((major << 16) | minor)
+
#define AMDGPU_INVALID_VA_ADDRESS 0xffffffffffffffff
#define AMDGPU_NULL_SUBMIT_SEQ 0
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