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