diff options
Diffstat (limited to 'drivers/staging/vc04_services/vc-sm-cma/vc_sm_knl.h')
| -rw-r--r-- | drivers/staging/vc04_services/vc-sm-cma/vc_sm_knl.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/staging/vc04_services/vc-sm-cma/vc_sm_knl.h b/drivers/staging/vc04_services/vc-sm-cma/vc_sm_knl.h new file mode 100644 index 000000000000..988fdd967922 --- /dev/null +++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm_knl.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +/* + * VideoCore Shared Memory CMA allocator + * + * Copyright: 2018, Raspberry Pi (Trading) Ltd + * + * Based on vc_sm_defs.h from the vmcs_sm driver Copyright Broadcom Corporation. + * + */ + +#ifndef __VC_SM_KNL_H__INCLUDED__ +#define __VC_SM_KNL_H__INCLUDED__ + +#if !defined(__KERNEL__) +#error "This interface is for kernel use only..." +#endif + +/* Free a previously allocated or imported shared memory handle and block. */ +int vc_sm_cma_free(void *handle); + +/* Get an internal resource handle mapped from the external one. */ +int vc_sm_cma_int_handle(void *handle); + +/* Import a block of memory into the GPU space. */ +int vc_sm_cma_import_dmabuf(struct dma_buf *dmabuf, void **handle); + +#endif /* __VC_SM_KNL_H__INCLUDED__ */ |