125 lines
3.3 KiB
C
125 lines
3.3 KiB
C
/*
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* Copyright (C) 2016 Freescale Semiconductor, Inc.
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* Copyright 2017 NXP
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/*!
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* Header file for the RPC implementation.
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*/
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#ifndef _SC_RPC_H
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#define _SC_RPC_H
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/* Includes */
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#include <soc/imx8/sc/types.h>
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#include <soc/imx8/sc/ipc.h>
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/* Defines */
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#define SC_RPC_VERSION 1
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#define SC_RPC_MAX_MSG 8
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#define RPC_VER(MSG) ((MSG)->version)
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#define RPC_SIZE(MSG) ((MSG)->size)
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#define RPC_SVC(MSG) ((MSG)->svc)
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#define RPC_FUNC(MSG) ((MSG)->func)
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#define RPC_R8(MSG) ((MSG)->func)
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#define RPC_I32(MSG, IDX) ((MSG)->DATA.i32[(IDX) / 4])
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#define RPC_I16(MSG, IDX) ((MSG)->DATA.i16[(IDX) / 2])
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#define RPC_I8(MSG, IDX) ((MSG)->DATA.i8[(IDX)])
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#define RPC_U32(MSG, IDX) ((MSG)->DATA.u32[(IDX) / 4])
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#define RPC_U16(MSG, IDX) ((MSG)->DATA.u16[(IDX) / 2])
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#define RPC_U8(MSG, IDX) ((MSG)->DATA.u8[(IDX)])
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/* Types */
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typedef enum sc_rpc_svc_e {
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SC_RPC_SVC_UNKNOWN = 0,
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SC_RPC_SVC_RETURN = 1,
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SC_RPC_SVC_PM = 2,
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SC_RPC_SVC_RM = 3,
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SC_RPC_SVC_TIMER = 5,
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SC_RPC_SVC_PAD = 6,
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SC_RPC_SVC_MISC = 7,
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SC_RPC_SVC_IRQ = 8,
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SC_RPC_SVC_ABORT = 9
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} sc_rpc_svc_t;
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typedef struct sc_rpc_msg_s {
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uint8_t version;
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uint8_t size;
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uint8_t svc;
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uint8_t func;
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union {
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int32_t i32[(SC_RPC_MAX_MSG - 1)];
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int16_t i16[(SC_RPC_MAX_MSG - 1) * 2];
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int8_t i8[(SC_RPC_MAX_MSG - 1) * 4];
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uint32_t u32[(SC_RPC_MAX_MSG - 1)];
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uint16_t u16[(SC_RPC_MAX_MSG - 1) * 2];
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uint8_t u8[(SC_RPC_MAX_MSG - 1) * 4];
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} DATA;
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} sc_rpc_msg_t;
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typedef enum sc_rpc_async_state_e {
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SC_RPC_ASYNC_STATE_RD_START = 0,
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SC_RPC_ASYNC_STATE_RD_ACTIVE = 1,
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SC_RPC_ASYNC_STATE_RD_DONE = 2,
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SC_RPC_ASYNC_STATE_WR_START = 3,
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SC_RPC_ASYNC_STATE_WR_ACTIVE = 4,
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SC_RPC_ASYNC_STATE_WR_DONE = 5,
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} sc_rpc_async_state_t;
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typedef struct sc_rpc_async_msg_s {
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sc_rpc_async_state_t state;
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uint8_t wordIdx;
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sc_rpc_msg_t msg;
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uint32_t timeStamp;
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} sc_rpc_async_msg_t;
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/* Functions */
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/*!
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* This is an internal function to send an RPC message over an IPC
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* channel. It is called by client-side SCFW API function shims.
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*
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* @param[in] ipc IPC handle
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* @param[in,out] msg handle to a message
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* @param[in] no_resp response flag
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*
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* If \a no_resp is false then this function waits for a response
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* and returns the result in \a msg.
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*/
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void sc_call_rpc(sc_ipc_t ipc, sc_rpc_msg_t *msg, bool no_resp);
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/*!
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* This is an internal function to dispath an RPC call that has
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* arrived via IPC over an MU. It is called by server-side SCFW.
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*
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* @param[in] mu MU message arrived on
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* @param[in,out] msg handle to a message
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*
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* The function result is returned in \a msg.
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*/
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void sc_rpc_dispatch(sc_rsrc_t mu, sc_rpc_msg_t *msg);
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/*!
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* This function translates an RPC message and forwards on to the
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* normal RPC API. It is used only by hypervisors.
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*
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* @param[in] ipc IPC handle
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* @param[in,out] msg handle to a message
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*
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* This function decodes a message, calls macros to translate the
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* resources, pads, addresses, partitions, memory regions, etc. and
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* then forwards on to the hypervisors SCFW API.Return results are
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* translated back abd placed back into the message to be returned
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* to the original API.
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*/
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void sc_rpc_xlate(sc_ipc_t ipc, sc_rpc_msg_t *msg);
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#endif /* _SC_RPC_H */
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