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drm/amdkfd: Import DMABufs for interop through DRM

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Use drm_gem_prime_fd_to_handle to import DMABufs for interop. This
ensures that a GEM handle is created on import and that obj->dma_buf
will be set and remain set as long as the object is imported into KFD.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Ramesh Errabolu <Ramesh.Errabolu@amd.com>
Reviewed-by: Xiaogang.Chen <Xiaogang.Chen@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Felix Kuehling
2023-09-19 14:57:02 -04:00
committed by Alex Deucher
parent 1819200166
commit 0188006d7c
3 changed files with 52 additions and 36 deletions
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15
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
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@@ -1564,16 +1564,11 @@ static int kfd_ioctl_import_dmabuf(struct file *filep,
{
struct kfd_ioctl_import_dmabuf_args *args = data;
struct kfd_process_device *pdd;
struct dma_buf *dmabuf;
int idr_handle;
uint64_t size;
void *mem;
int r;
dmabuf = dma_buf_get(args->dmabuf_fd);
if (IS_ERR(dmabuf))
return PTR_ERR(dmabuf);
mutex_lock(&p->mutex);
pdd = kfd_process_device_data_by_id(p, args->gpu_id);
if (!pdd) {
@@ -1587,10 +1582,10 @@ static int kfd_ioctl_import_dmabuf(struct file *filep,
goto err_unlock;
}
r = amdgpu_amdkfd_gpuvm_import_dmabuf(pdd->dev->adev, dmabuf,
args->va_addr, pdd->drm_priv,
(struct kgd_mem **)&mem, &size,
NULL);
r = amdgpu_amdkfd_gpuvm_import_dmabuf_fd(pdd->dev->adev, args->dmabuf_fd,
args->va_addr, pdd->drm_priv,
(struct kgd_mem **)&mem, &size,
NULL);
if (r)
goto err_unlock;
@@ -1601,7 +1596,6 @@ static int kfd_ioctl_import_dmabuf(struct file *filep,
}
mutex_unlock(&p->mutex);
dma_buf_put(dmabuf);
args->handle = MAKE_HANDLE(args->gpu_id, idr_handle);
@@ -1612,7 +1606,6 @@ err_free:
pdd->drm_priv, NULL);
err_unlock:
mutex_unlock(&p->mutex);
dma_buf_put(dmabuf);
return r;
}