58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
#pragma once
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#include <u_types.h>
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#include <u_prot.h>
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enum vpage_prot_attrs
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{
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VPAGE_PROT_RO = 1, //!< 只读
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VPAGE_PROT_WO = 0x2,
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VPAGE_PROT_RW = VPAGE_PROT_RO | VPAGE_PROT_WO, //!< 读写
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VPAGE_PROT_X = 0x4,
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VPAGE_PROT_RWX = (VPAGE_PROT_RO | VPAGE_PROT_RW | VPAGE_PROT_X), //!< 读写执行
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VPAGE_PROT_N_ACCESS_FLAG = 0x8, //!< 访问是否缺页，设置代表缺页
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VPAGE_PROT_UNCACHE = 0x10, //!< 不使用缓存
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VPAGE_PROT_IN_KNL = 0x20, //!< 内核中使用
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};
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#define VMA_ADDR_RESV 0x1 //!< flags 保留内存
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#define VMA_ADDR_PAGE_FAULT_SIM 0x2 //!< page fault模拟，使用mpu模拟，该内存不能被栈使用
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#define VMA_ADDR_PAGE_FAULT_DSCT 0x4 //!< 申请内存时按叶大小申请与映射
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typedef union vma_addr
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{
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umword_t raw;
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struct
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{
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#if IS_ENABLED(CONFIG_MMU)
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umword_t prot : 8;
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umword_t flags : 4;
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#else
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umword_t prot : 6;
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umword_t flags : 3;
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#endif
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// umword_t resv : 2;
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umword_t addr : (sizeof(void *) * 8 - CONFIG_PAGE_SHIFT);
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};
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} vma_addr_t;
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static inline vma_addr_t vma_addr_create_raw(umword_t raw)
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{
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return (vma_addr_t){
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.raw = raw,
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};
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}
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static inline vma_addr_t vma_addr_create(uint8_t prot, uint8_t flags, umword_t addr)
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{
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return (vma_addr_t){
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.prot = prot,
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.flags = flags,
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// .resv = 0,
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.addr = addr >> CONFIG_PAGE_SHIFT,
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};
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}
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msg_tag_t u_vmam_alloc(obj_handler_t obj, vma_addr_t addr, size_t size, addr_t paddr, addr_t *vaddr);
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msg_tag_t u_vmam_grant(obj_handler_t obj, obj_handler_t dst_task_obj,
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addr_t src_addr, addr_t dst_addr, size_t size);
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msg_tag_t u_vmam_free(obj_handler_t obj, addr_t addr, size_t size);
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