DragonOS/kernel/mm/mmio.c
2022-08-18 22:06:29 +08:00

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#include "mmio.h"
#include "mmio-buddy.h"
void mmio_init()
{
mmio_buddy_init();
}
/**
* @brief 创建一块mmio区域并将vma绑定到initial_mm
*
* @param size mmio区域的大小字节
* @param length mmio区域长度
* @param vm_flags 要把vma设置成的标志
* @param res_vaddr 返回值-分配得到的虚拟地址
* @param res_length 返回值-分配的虚拟地址空间长度
* @return int 错误码
*/
int mmio_create(uint32_t size, uint64_t length, vm_flags_t vm_flags, uint64_t * res_vaddr, uint64_t *res_length)
{
}
/**
* @brief 取消mmio的映射并将地址空间归还到buddy中
*
* @param vaddr 起始的虚拟地址
* @param length 要归还的地址空间的长度
* @return int 错误码
*/
int mmio_release(uint64_t vaddr, uint64_t length)
{
}