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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Copyright (C) STMicroelectronics SA 2015
- * Author: Hugues Fruchet <hugues.fruchet@st.com> for STMicroelectronics.
- */
- #ifndef DELTA_IPC_H
- #define DELTA_IPC_H
- int delta_ipc_init(struct delta_dev *delta);
- void delta_ipc_exit(struct delta_dev *delta);
- /*
- * delta_ipc_open - open a decoding instance on firmware side
- * @ctx: (in) delta context
- * @name: (in) name of decoder to be used
- * @param: (in) open command parameters specific to decoder
- * @param.size: (in) size of parameter
- * @param.data: (in) virtual address of parameter
- * @ipc_buf_size: (in) size of IPC shared buffer between host
- * and copro used to share command data.
- * Client have to set here the size of the biggest
- * command parameters (+ status if any).
- * Allocation will be done in this function which
- * will give back to client in @ipc_buf the virtual
- * & physical addresses & size of shared IPC buffer.
- * All the further command data (parameters + status)
- * have to be written in this shared IPC buffer
- * virtual memory. This is done to avoid
- * unnecessary copies of command data.
- * @ipc_buf: (out) allocated IPC shared buffer
- * @ipc_buf.size: (out) allocated size
- * @ipc_buf.vaddr: (out) virtual address where to copy
- * further command data
- * @hdl: (out) handle of decoding instance.
- */
- int delta_ipc_open(struct delta_ctx *ctx, const char *name,
- struct delta_ipc_param *param, u32 ipc_buf_size,
- struct delta_buf **ipc_buf, void **hdl);
- /*
- * delta_ipc_set_stream - set information about stream to decoder
- * @hdl: (in) handle of decoding instance.
- * @param: (in) set stream command parameters specific to decoder
- * @param.size: (in) size of parameter
- * @param.data: (in) virtual address of parameter. Must be
- * within IPC shared buffer range
- */
- int delta_ipc_set_stream(void *hdl, struct delta_ipc_param *param);
- /*
- * delta_ipc_decode - frame decoding synchronous request, returns only
- * after decoding completion on firmware side.
- * @hdl: (in) handle of decoding instance.
- * @param: (in) decode command parameters specific to decoder
- * @param.size: (in) size of parameter
- * @param.data: (in) virtual address of parameter. Must be
- * within IPC shared buffer range
- * @status: (in/out) decode command status specific to decoder
- * @status.size: (in) size of status
- * @status.data: (in/out) virtual address of status. Must be
- * within IPC shared buffer range.
- * Status is filled by decoding instance
- * after decoding completion.
- */
- int delta_ipc_decode(void *hdl, struct delta_ipc_param *param,
- struct delta_ipc_param *status);
- /*
- * delta_ipc_close - close decoding instance
- * @hdl: (in) handle of decoding instance to close.
- */
- void delta_ipc_close(void *hdl);
- #endif /* DELTA_IPC_H */
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