59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/*
|
|
* Copyright (c) 2020 AIIT XUOS Lab
|
|
* XiUOS is licensed under Mulan PSL v2.
|
|
* You can use this software according to the terms and conditions of the Mulan PSL v2.
|
|
* You may obtain a copy of Mulan PSL v2 at:
|
|
* http://license.coscl.org.cn/MulanPSL2
|
|
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
|
|
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
|
|
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
|
|
* See the Mulan PSL v2 for more details.
|
|
*/
|
|
/**
|
|
* @file sys_mmap.c
|
|
* @brief map task phy address to virt address
|
|
* @version 3.0
|
|
* @author AIIT XUOS Lab
|
|
* @date 2023.08.25
|
|
*/
|
|
|
|
/*************************************************
|
|
File name: sys_mmap.c
|
|
Description: map task phy address to virt address
|
|
Others:
|
|
History:
|
|
1. Date: 2023-08-28
|
|
Author: AIIT XUOS Lab
|
|
Modification:
|
|
1. first version
|
|
*************************************************/
|
|
#include <stdint.h>
|
|
|
|
#include "assert.h"
|
|
#include "multicores.h"
|
|
#include "kalloc.h"
|
|
#include "share_page.h"
|
|
#include "syscall.h"
|
|
#include "task.h"
|
|
|
|
int sys_mmap(uintptr_t vaddr, uintptr_t paddr, int len, int is_dev)
|
|
{
|
|
struct TaskMicroDescriptor* cur_task = cur_cpu()->task;
|
|
assert(cur_task != NULL);
|
|
|
|
if (paddr != (uintptr_t)NULL) {
|
|
if (xizi_share_page_manager.task_map_pages(cur_task, vaddr, paddr, ALIGNUP(len, PAGE_SIZE) / PAGE_SIZE, is_dev) == (uintptr_t)NULL) {
|
|
return -1;
|
|
}
|
|
} else {
|
|
char* kern_vaddr = kalloc(len);
|
|
if (kern_vaddr == NULL) {
|
|
return -1;
|
|
}
|
|
if (xizi_share_page_manager.task_map_pages(cur_task, vaddr, V2P(kern_vaddr), ALIGNUP(len, PAGE_SIZE) / PAGE_SIZE, is_dev) == (uintptr_t)NULL) {
|
|
kfree(kern_vaddr);
|
|
return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
} |