intercom.h

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/* SPDX-License-Identifier: BSD-2-Clause */
 
/*
 * Copyright (c) 2011 embedded brains GmbH & Co. KG
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifndef LIBBSP_POWERPC_QORIQ_INTERCOM_H
#define LIBBSP_POWERPC_QORIQ_INTERCOM_H
 
#include <rtems.h>
#include <rtems/chain.h>
 
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
 
uint32_t qoriq_spin_lock(uint32_t *lock);
 
void qoriq_spin_unlock(uint32_t *lock, uint32_t msr);
 
#define INTERCOM_CORE_COUNT 2
 
#define INTERCOM_SERVICE_COUNT 8
 
typedef enum {
    INTERCOM_TYPE_MPCI,
    INTERCOM_TYPE_UART_0,
    INTERCOM_TYPE_UART_1,
    INTERCOM_TYPE_NETWORK,
    INTERCOM_TYPE_CUSTOM_0,
    INTERCOM_TYPE_CUSTOM_1,
    INTERCOM_TYPE_CUSTOM_2,
    INTERCOM_TYPE_CUSTOM_3,
    INTERCOM_TYPE_CUSTOM_4
} intercom_type;
 
typedef enum {
    INTERCOM_SIZE_64 = 0,
    INTERCOM_SIZE_512,
    INTERCOM_SIZE_2K,
    INTERCOM_SIZE_4K
} intercom_size;
 
typedef struct intercom_packet {
    union {
        struct intercom_packet *next;
        rtems_chain_node node;
    } glue;
    intercom_type type_index;
    intercom_size size_index;
    uint32_t flags;
    size_t size;
    uint32_t cache_line_alignment [2];
    char data [];
} intercom_packet;
 
typedef void (*intercom_service)(intercom_packet *packet, void *arg);
 
void qoriq_intercom_init(void);
 
void qoriq_intercom_start(void);
 
void qoriq_intercom_service_install(intercom_type type, intercom_service service, void *arg);
 
void qoriq_intercom_service_remove(intercom_type type);
 
intercom_packet *qoriq_intercom_allocate_packet(intercom_type type, intercom_size size);
 
void qoriq_intercom_send_packets(int destination_core, intercom_packet *first, intercom_packet *last);
 
static inline void qoriq_intercom_send_packet(int destination_core, intercom_packet *packet)
{
    qoriq_intercom_send_packets(destination_core, packet, packet);
}
 
void qoriq_intercom_broadcast_packets(intercom_packet *first, intercom_packet *last);
 
static inline void qoriq_intercom_broadcast_packet(intercom_packet *packet)
{
    qoriq_intercom_broadcast_packets(packet, packet);
}
 
void qoriq_intercom_send(int destination_core, intercom_type type, intercom_size size, const void *buf, size_t n);
 
void qoriq_intercom_free_packet(intercom_packet *packet);
 
intercom_packet *qoriq_intercom_clone_packet(const intercom_packet *packet);
 
#ifdef RTEMS_MULTIPROCESSING
  extern rtems_mpci_table qoriq_intercom_mpci;
#endif
 
#ifdef __cplusplus
}
#endif /* __cplusplus */
 
#endif /* LIBBSP_POWERPC_QORIQ_INTERCOM_H */