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drm/amdgpu: add FENCE_TO_HANDLE ioctl that returns syncobj or sync_file

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for being able to convert an amdgpu fence into one of the handles.
Mesa will use this.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Marek Olšák
2017-09-12 22:42:14 +02:00
committed by Alex Deucher
parent 684fd0af47
commit 7ca24cf2d2
5 changed files with 82 additions and 1 deletions
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61
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
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@@ -25,6 +25,7 @@
* Jerome Glisse <glisse@freedesktop.org>
*/
#include <linux/pagemap.h>
#include <linux/sync_file.h>
#include <drm/drmP.h>
#include <drm/amdgpu_drm.h>
#include <drm/drm_syncobj.h>
@@ -1330,6 +1331,66 @@ static struct dma_fence *amdgpu_cs_get_fence(struct amdgpu_device *adev,
return fence;
}
int amdgpu_cs_fence_to_handle_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
struct amdgpu_device *adev = dev->dev_private;
struct amdgpu_fpriv *fpriv = filp->driver_priv;
union drm_amdgpu_fence_to_handle *info = data;
struct dma_fence *fence;
struct drm_syncobj *syncobj;
struct sync_file *sync_file;
int fd, r;
if (amdgpu_kms_vram_lost(adev, fpriv))
return -ENODEV;
fence = amdgpu_cs_get_fence(adev, filp, &info->in.fence);
if (IS_ERR(fence))
return PTR_ERR(fence);
switch (info->in.what) {
case AMDGPU_FENCE_TO_HANDLE_GET_SYNCOBJ:
r = drm_syncobj_create(&syncobj, 0, fence);
dma_fence_put(fence);
if (r)
return r;
r = drm_syncobj_get_handle(filp, syncobj, &info->out.handle);
drm_syncobj_put(syncobj);
return r;
case AMDGPU_FENCE_TO_HANDLE_GET_SYNCOBJ_FD:
r = drm_syncobj_create(&syncobj, 0, fence);
dma_fence_put(fence);
if (r)
return r;
r = drm_syncobj_get_fd(syncobj, (int*)&info->out.handle);
drm_syncobj_put(syncobj);
return r;
case AMDGPU_FENCE_TO_HANDLE_GET_SYNC_FILE_FD:
fd = get_unused_fd_flags(O_CLOEXEC);
if (fd < 0) {
dma_fence_put(fence);
return fd;
}
sync_file = sync_file_create(fence);
dma_fence_put(fence);
if (!sync_file) {
put_unused_fd(fd);
return -ENOMEM;
}
fd_install(fd, sync_file->file);
info->out.handle = fd;
return 0;
default:
return -EINVAL;
}
}
/**
* amdgpu_cs_wait_all_fence - wait on all fences to signal
*