send_mc.h

/*
 * Copyright (c) 2021 The University of Manchester
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef __SEND_MC_H__
#define __SEND_MC_H__
 
#include <stdint.h>
#include <spin1_api.h>
#include <spin1_api_params.h>
#include <debug.h>
 
#define TX_NOT_FULL_MASK 0x10000000
 
static inline void wait_for_cc(void) {
    uint32_t n_loops = 0;
    while (!(cc[CC_TCR] & TX_NOT_FULL_MASK) && (n_loops < 10000)) {
        spin1_delay_us(1);
        n_loops++;
    }
    if (!(cc[CC_TCR] & TX_NOT_FULL_MASK)) {
        log_error("Couldn't send spike; TCR=0x%08x\n", cc[CC_TCR]);
        rt_error(RTE_SWERR);
    }
}
 
static inline void send_spike_mc(uint32_t key) {
    wait_for_cc();
    cc[CC_TCR] = PKT_MC;
    cc[CC_TXKEY]  = key;
}
 
static inline void send_spike_mc_payload(uint32_t key, uint32_t payload) {
    wait_for_cc();
    cc[CC_TCR] = PKT_MC;
    cc[CC_TXDATA] = payload;
    cc[CC_TXKEY]  = key;
}
#endif // __SEND_MC_H__