Re: [PATCH libdrm 1/2] drm/amdgpu: add syncobj create/destroy/import/export apis

[zhoucm1 <david1.zhou@xxxxxxx>]

On 2017年07月18日 08:48, Dave Airlie wrote:
> From: Dave Airlie <airlied@xxxxxxxxxx>
>
> These are just wrappers using the amdgpu device handle.
>
> Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
Acked-by: Chunming Zhou <david1.zhou@xxxxxxx>
> ---
>   amdgpu/amdgpu.h    | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
>   amdgpu/amdgpu_cs.c | 38 +++++++++++++++++++++++++++++++++++++
>   2 files changed, 92 insertions(+), 1 deletion(-)
>
> diff --git a/amdgpu/amdgpu.h b/amdgpu/amdgpu.h
> index 1901fa8..183f974 100644
> --- a/amdgpu/amdgpu.h
> +++ b/amdgpu/amdgpu.h
> @@ -1328,8 +1328,61 @@ int amdgpu_cs_destroy_semaphore(amdgpu_semaphore_handle sem);
>   */
>   const char *amdgpu_get_marketing_name(amdgpu_device_handle dev);
>   
> +/**
> + *  Create kernel sync object
> + *
> + * \param   dev	      - \c [in]  device handle
> + * \param   syncobj   - \c [out] sync object handle
> + *
> + * \return   0 on success\n
> + *          <0 - Negative POSIX Error code
> + *
> +*/
> +int amdgpu_cs_create_syncobj(amdgpu_device_handle dev,
> +			     uint32_t *syncobj);
> +/**
> + *  Destroy kernel sync object
> + *
> + * \param   dev	    - \c [in] device handle
> + * \param   syncobj - \c [in] sync object handle
> + *
> + * \return   0 on success\n
> + *          <0 - Negative POSIX Error code
> + *
> +*/
> +int amdgpu_cs_destroy_syncobj(amdgpu_device_handle dev,
> +			      uint32_t syncobj);
> +
> +/**
> + *  Export kernel sync object to shareable fd.
> + *
> + * \param   dev	       - \c [in] device handle
> + * \param   syncobj    - \c [in] sync object handle
> + * \param   shared_fd  - \c [out] shared file descriptor.
> + *
> + * \return   0 on success\n
> + *          <0 - Negative POSIX Error code
> + *
> +*/
> +int amdgpu_cs_export_syncobj(amdgpu_device_handle dev,
> +			     uint32_t syncobj,
> +			     int *shared_fd);
> +/**
> + *  Import kernel sync object from shareable fd.
> + *
> + * \param   dev	       - \c [in] device handle
> + * \param   shared_fd  - \c [in] shared file descriptor.
> + * \param   syncobj    - \c [out] sync object handle
> + *
> + * \return   0 on success\n
> + *          <0 - Negative POSIX Error code
> + *
> +*/
> +int amdgpu_cs_import_syncobj(amdgpu_device_handle dev,
> +			     int shared_fd,
> +			     uint32_t *syncobj);
> +
>   #ifdef __cplusplus
>   }
>   #endif
> -
>   #endif /* #ifdef _AMDGPU_H_ */
> diff --git a/amdgpu/amdgpu_cs.c b/amdgpu/amdgpu_cs.c
> index 868eb7b..722fd75 100644
> --- a/amdgpu/amdgpu_cs.c
> +++ b/amdgpu/amdgpu_cs.c
> @@ -596,3 +596,41 @@ int amdgpu_cs_destroy_semaphore(amdgpu_semaphore_handle sem)
>   {
>   	return amdgpu_cs_unreference_sem(sem);
>   }
> +
> +int amdgpu_cs_create_syncobj(amdgpu_device_handle dev,
> +			     uint32_t *handle)
> +{
> +	if (NULL == dev)
> +		return -EINVAL;
> +
> +	return drmSyncobjCreate(dev->fd, 0, handle);
> +}
> +
> +int amdgpu_cs_destroy_syncobj(amdgpu_device_handle dev,
> +			      uint32_t handle)
> +{
> +	if (NULL == dev)
> +		return -EINVAL;
> +
> +	return drmSyncobjDestroy(dev->fd, handle);
> +}
> +
> +int amdgpu_cs_export_syncobj(amdgpu_device_handle dev,
> +			     uint32_t handle,
> +			     int *shared_fd)
> +{
> +	if (NULL == dev)
> +		return -EINVAL;
> +
> +	return drmSyncobjHandleToFD(dev->fd, handle, shared_fd);
> +}
> +
> +int amdgpu_cs_import_syncobj(amdgpu_device_handle dev,
> +			     int shared_fd,
> +			     uint32_t *handle)
> +{
> +	if (NULL == dev)
> +		return -EINVAL;
> +
> +	return drmSyncobjFDToHandle(dev->fd, shared_fd, handle);
> +}

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