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91 lines
2.1 KiB
91 lines
2.1 KiB
// SPDX-License-Identifier: BSD-3-Clause
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/*
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* Copyright (c) 2015-2022, Arm Limited and Contributors. All rights reserved.
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* Copyright (c) 2019-2020, Linaro Limited
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*/
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#include <assert.h>
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#include <drivers/scmi-msg.h>
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#include <drivers/scmi.h>
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#include "common.h"
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#pragma weak scmi_msg_get_clock_handler
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#pragma weak scmi_msg_get_rstd_handler
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#pragma weak scmi_msg_get_pd_handler
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#pragma weak scmi_msg_get_voltage_handler
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scmi_msg_handler_t scmi_msg_get_clock_handler(struct scmi_msg *msg __unused)
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{
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return NULL;
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}
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scmi_msg_handler_t scmi_msg_get_rstd_handler(struct scmi_msg *msg __unused)
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{
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return NULL;
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}
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scmi_msg_handler_t scmi_msg_get_pd_handler(struct scmi_msg *msg __unused)
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{
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return NULL;
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}
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scmi_msg_handler_t scmi_msg_get_voltage_handler(struct scmi_msg *msg __unused)
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{
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return NULL;
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}
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void scmi_status_response(struct scmi_msg *msg, int32_t status)
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{
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assert(msg->out && msg->out_size >= sizeof(int32_t));
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memcpy(msg->out, &status, sizeof(int32_t));
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msg->out_size_out = sizeof(int32_t);
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}
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void scmi_write_response(struct scmi_msg *msg, void *payload, size_t size)
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{
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/*
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* Output payload shall be at least the size of the status
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* Output buffer shall be at least be the size of the status
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* Output paylaod shall fit in output buffer
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*/
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assert(payload && size >= sizeof(int32_t) && size <= msg->out_size &&
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msg->out && msg->out_size >= sizeof(int32_t));
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memcpy(msg->out, payload, size);
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msg->out_size_out = size;
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}
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void scmi_process_message(struct scmi_msg *msg)
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{
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scmi_msg_handler_t handler = NULL;
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switch (msg->protocol_id) {
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case SCMI_PROTOCOL_ID_BASE:
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handler = scmi_msg_get_base_handler(msg);
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break;
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case SCMI_PROTOCOL_ID_CLOCK:
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handler = scmi_msg_get_clock_handler(msg);
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break;
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case SCMI_PROTOCOL_ID_RESET_DOMAIN:
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handler = scmi_msg_get_rstd_handler(msg);
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break;
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case SCMI_PROTOCOL_ID_POWER_DOMAIN:
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handler = scmi_msg_get_pd_handler(msg);
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break;
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default:
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break;
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}
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if (handler) {
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handler(msg);
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return;
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}
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ERROR("Agent %u Protocol 0x%x Message 0x%x: not supported\n",
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msg->agent_id, msg->protocol_id, msg->message_id);
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scmi_status_response(msg, SCMI_NOT_SUPPORTED);
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}
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