alh.h

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/* SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright(c) 2021 Intel Corporation. All rights reserved.
 */
 
/*
 * This file contains structures that are exact copies of an existing ABI used
 * by IOT middleware. They are Intel specific and will be used by one middleware.
 *
 * Some of the structures may contain programming implementations that makes them
 * unsuitable for generic use and general usage.
 *
 * This code is mostly copied "as-is" from existing C++ interface files hence the use of
 * different style in places. The intention is to keep the interface as close as possible to
 * original so it's easier to track changes with IPC host code.
 */
 
#ifndef __SOF_IPC4_ALH_H__
#define __SOF_IPC4_ALH_H__
 
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
#include <ipc4/gateway.h>
 
#define IPC4_ALH_MAX_NUMBER_OF_GTW 16
#ifdef CONFIG_DMA_INTEL_ADSP_GPDMA
#define IPC4_ALH_DAI_INDEX_OFFSET 7
#else
#define IPC4_ALH_DAI_INDEX_OFFSET 0
#endif
 
#if defined(CONFIG_SOC_SERIES_INTEL_ADSP_CAVS) || \
    defined(CONFIG_SOC_ACE15_MTPM)
#define IPC4_DAI_NUM_ALH_BI_DIR_LINKS   16
#define IPC4_DAI_NUM_ALH_BI_DIR_LINKS_GROUP 4
#else
#define IPC4_DAI_NUM_ALH_BI_DIR_LINKS   0
#define IPC4_DAI_NUM_ALH_BI_DIR_LINKS_GROUP 0
#endif
 
#define IPC4_ALH_DAI_INDEX(x) ((((x) & 0xF0) << IPC4_DAI_NUM_ALH_BI_DIR_LINKS_GROUP) + \
                (((x) & 0xF) - IPC4_ALH_DAI_INDEX_OFFSET))
 
#define IPC4_ALH_MULTI_GTW_BASE 0x50
 
static inline bool is_multi_gateway(const union ipc4_connector_node_id node_id)
{
    return node_id.f.v_index >= IPC4_ALH_MULTI_GTW_BASE;
}
 
struct ipc4_alh_multi_gtw_cfg {
    uint32_t count; 
    struct {
        uint32_t alh_id;       
        uint32_t channel_mask; 
    } mapping[IPC4_ALH_MAX_NUMBER_OF_GTW]; 
} __attribute__((packed, aligned(4)));
 
struct sof_alh_configuration_blob {
    union ipc4_gateway_attributes gtw_attributes; 
    struct ipc4_alh_multi_gtw_cfg alh_cfg;        
} __attribute__((packed, aligned(4)));
 
static inline size_t
get_alh_config_size(const struct sof_alh_configuration_blob *alh_blob)
{
    return sizeof(alh_blob->gtw_attributes) +
           sizeof(alh_blob->alh_cfg.count) +
           sizeof(alh_blob->alh_cfg.mapping[0]) * alh_blob->alh_cfg.count;
}
 
#endif