mem_domain.h

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/*
 * Copyright (c) 2017 Linaro Limited
 * Copyright (c) 2018-2020 Intel Corporation
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_APP_MEMORY_MEM_DOMAIN_H_
#define ZEPHYR_INCLUDE_APP_MEMORY_MEM_DOMAIN_H_
 
#include <stdint.h>
#include <stddef.h>
#include <zephyr/sys/dlist.h>
#include <zephyr/toolchain.h>
#include <zephyr/kernel/thread.h>
 
#ifdef __cplusplus
extern "C" {
#endif

 
#ifdef CONFIG_USERSPACE
#ifdef _ARCH_MEM_PARTITION_ALIGN_CHECK
#define K_MEM_PARTITION_DEFINE(name, start, size, attr) \
        _ARCH_MEM_PARTITION_ALIGN_CHECK(start, size); \
        struct k_mem_partition name =\
                { (uintptr_t)start, size, attr}
#else
#define K_MEM_PARTITION_DEFINE(name, start, size, attr) \
        struct k_mem_partition name =\
                { (uintptr_t)start, size, attr}
#define K_MEM_PARTITION_DEFINE(name, start, size, attr) \ …
#endif /* _ARCH_MEM_PARTITION_ALIGN_CHECK */

struct k_mem_partition {
        uintptr_t start;
        size_t size;
        k_mem_partition_attr_t attr;
};
struct k_mem_partition {…};

struct k_mem_domain {
#ifdef CONFIG_ARCH_MEM_DOMAIN_DATA
        struct arch_mem_domain arch;
#endif /* CONFIG_ARCH_MEM_DOMAIN_DATA */
        struct k_mem_partition partitions[CONFIG_MAX_DOMAIN_PARTITIONS];
        sys_dlist_t mem_domain_q;
        uint8_t num_partitions;
};
struct k_mem_domain {…};
 
typedef struct k_mem_domain k_mem_domain_t;

extern struct k_mem_domain k_mem_domain_default;
#else
/* To support use of IS_ENABLED for the APIs below */
struct k_mem_domain;
struct k_mem_partition;
#endif /* CONFIG_USERSPACE */

int k_mem_domain_init(struct k_mem_domain *domain, uint8_t num_parts,
                             struct k_mem_partition *parts[]);

int k_mem_domain_add_partition(struct k_mem_domain *domain,
                                      struct k_mem_partition *part);

int k_mem_domain_remove_partition(struct k_mem_domain *domain,
                                         struct k_mem_partition *part);

int k_mem_domain_add_thread(struct k_mem_domain *domain,
                                   k_tid_t thread);
 
#ifdef __cplusplus
}
#endif

#endif /* ZEPHYR_INCLUDE_APP_MEMORY_MEM_DOMAIN_H_ */