forked from xuos/xiuos
93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
/*
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* Copyright (c) 2020 AIIT XUOS Lab
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* XiUOS is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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* http://license.coscl.org.cn/MulanPSL2
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PSL v2 for more details.
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*/
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/**
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* @file share_page.h
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* @brief support share page for tasks
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* @version 3.0
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* @author AIIT XUOS Lab
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* @date 2023.08.25
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*/
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/*************************************************
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File name: share_page.h
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Description: support share page for tasks
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Others:
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History:
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1. Date: 2023-08-28
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Author: AIIT XUOS Lab
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Modification:
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1. first version
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*************************************************/
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#pragma once
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#include <stdbool.h>
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#include <stdint.h>
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#include "actracer.h"
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#include "list.h"
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#include "task.h"
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/// @brief userland session info copy
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struct Session {
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int id;
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int capacity;
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int head;
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int tail;
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void* buf;
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};
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#define SERVER_SESSION_BACKEND(session) CONTAINER_OF(session, struct session_backend, server_side)
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#define CLIENT_SESSION_BACKEND(session) CONTAINER_OF(session, struct session_backend, client_side)
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struct server_session {
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struct double_list_node node; // list_head of server task's ipc pipes
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uintptr_t buf_addr;
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int capacity;
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int head;
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int tail;
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bool closed;
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};
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struct client_session {
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struct double_list_node node; // list_head of client task's ipc pipes
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uintptr_t buf_addr;
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int capacity;
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bool closed;
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};
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/// @brief kernel data struct to represent a ipc pipe, listed in client's task
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struct session_backend {
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struct server_session server_side;
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struct client_session client_side;
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int session_id; // id of this session
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int nr_pages; // pages used by this pipe
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struct TaskMicroDescriptor* client; // client of this pipe
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struct TaskMicroDescriptor* server; // server of this pipe
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uintptr_t buf_kernel_addr;
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};
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struct SharePageRightGroup {
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struct TraceTag dcache_driver_tag;
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struct TraceTag mmu_driver_tag;
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};
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struct XiziSharePageManager {
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struct session_backend* (*create_share_pages)(struct TaskMicroDescriptor* client, struct TaskMicroDescriptor* server, const int capacity);
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void (*unmap_task_share_pages)(struct TaskMicroDescriptor* task, const uintptr_t task_vaddr, const int nr_pages);
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int (*delete_share_pages)(struct session_backend* session_backend);
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uintptr_t (*task_map_pages)(struct TaskMicroDescriptor* task, const uintptr_t vaddr, const uintptr_t paddr, const int nr_pages, const int is_dev);
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};
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extern struct XiziSharePageManager xizi_share_page_manager;
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int module_share_page_init(struct SharePageRightGroup* right_group);
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