X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/b6ff3c7dbab3f40d03389808d95ac27d416c35e3..45e1f8b055043e54be35462852ab6649d634da7c:/lunaix-os/kernel/mm/vmm.c diff --git a/lunaix-os/kernel/mm/vmm.c b/lunaix-os/kernel/mm/vmm.c index 8f67bd2..3340f11 100644 --- a/lunaix-os/kernel/mm/vmm.c +++ b/lunaix-os/kernel/mm/vmm.c @@ -29,16 +29,12 @@ vmm_init_pd() } int -vmm_set_mapping(uintptr_t mnt, - uintptr_t va, - uintptr_t pa, - pt_attr attr, - int options) +vmm_set_mapping(ptr_t mnt, ptr_t va, ptr_t pa, pt_attr attr, int options) { - assert((uintptr_t)va % PG_SIZE == 0); + assert((ptr_t)va % PG_SIZE == 0); - uintptr_t l1_inx = L1_INDEX(va); - uintptr_t l2_inx = L2_INDEX(va); + ptr_t l1_inx = L1_INDEX(va); + ptr_t l2_inx = L2_INDEX(va); x86_page_table* l1pt = (x86_page_table*)(mnt | (1023 << 12)); x86_page_table* l2pt = (x86_page_table*)(mnt | (l1_inx << 12)); @@ -46,7 +42,8 @@ vmm_set_mapping(uintptr_t mnt, assert(attr <= 128); if (!l1pt->entry[l1_inx]) { - x86_page_table* new_l1pt_pa = pmm_alloc_page(KERNEL_PID, PP_FGPERSIST); + x86_page_table* new_l1pt_pa = + (x86_page_table*)pmm_alloc_page(KERNEL_PID, PP_FGPERSIST); // 物理内存已满! if (!new_l1pt_pa) { @@ -58,7 +55,7 @@ vmm_set_mapping(uintptr_t mnt, NEW_L1_ENTRY(attr | PG_WRITE | PG_PRESENT, new_l1pt_pa); // make sure our new l2 table is visible to CPU - cpu_invplg(l2pt); + cpu_invplg((ptr_t)l2pt); memset((void*)l2pt, 0, PG_SIZE); } else { @@ -80,10 +77,10 @@ vmm_set_mapping(uintptr_t mnt, return 1; } -uintptr_t -vmm_del_mapping(uintptr_t mnt, uintptr_t va) +ptr_t +vmm_del_mapping(ptr_t mnt, ptr_t va) { - assert(((uintptr_t)va & 0xFFFU) == 0); + assert(((ptr_t)va & 0xFFFU) == 0); u32_t l1_index = L1_INDEX(va); u32_t l2_index = L2_INDEX(va); @@ -111,13 +108,13 @@ vmm_del_mapping(uintptr_t mnt, uintptr_t va) } int -vmm_lookup(uintptr_t va, v_mapping* mapping) +vmm_lookup(ptr_t va, v_mapping* mapping) { return vmm_lookupat(VMS_SELF, va, mapping); } int -vmm_lookupat(ptr_t mnt, uintptr_t va, v_mapping* mapping) +vmm_lookupat(ptr_t mnt, ptr_t va, v_mapping* mapping) { u32_t l1_index = L1_INDEX(va); u32_t l2_index = L2_INDEX(va); @@ -128,6 +125,7 @@ vmm_lookupat(ptr_t mnt, uintptr_t va, v_mapping* mapping) if (l1pte) { x86_pte_t* l2pte = &((x86_page_table*)(mnt | (l1_index << 12)))->entry[l2_index]; + if (l2pte) { mapping->flags = PG_ENTRY_FLAGS(*l2pte); mapping->pa = PG_ENTRY_ADDR(*l2pte); @@ -137,11 +135,12 @@ vmm_lookupat(ptr_t mnt, uintptr_t va, v_mapping* mapping) return 1; } } + return 0; } -void* -vmm_v2p(void* va) +ptr_t +vmm_v2p(ptr_t va) { u32_t l1_index = L1_INDEX(va); u32_t l2_index = L2_INDEX(va); @@ -152,15 +151,16 @@ vmm_v2p(void* va) if (l1pte) { x86_pte_t* l2pte = &((x86_page_table*)L2_VADDR(l1_index))->entry[l2_index]; + if (l2pte) { - return PG_ENTRY_ADDR(*l2pte) | ((uintptr_t)va & 0xfff); + return PG_ENTRY_ADDR(*l2pte) | ((ptr_t)va & 0xfff); } } return 0; } -void* -vmm_v2pat(ptr_t mnt, void* va) +ptr_t +vmm_v2pat(ptr_t mnt, ptr_t va) { u32_t l1_index = L1_INDEX(va); u32_t l2_index = L2_INDEX(va); @@ -171,15 +171,16 @@ vmm_v2pat(ptr_t mnt, void* va) if (l1pte) { x86_pte_t* l2pte = &((x86_page_table*)(mnt | (l1_index << 12)))->entry[l2_index]; + if (l2pte) { - return PG_ENTRY_ADDR(*l2pte) | ((uintptr_t)va & 0xfff); + return PG_ENTRY_ADDR(*l2pte) | ((ptr_t)va & 0xfff); } } return 0; } -void* -vmm_mount_pd(uintptr_t mnt, void* pde) +ptr_t +vmm_mount_pd(ptr_t mnt, ptr_t pde) { x86_page_table* l1pt = (x86_page_table*)L1_BASE_VADDR; l1pt->entry[(mnt >> 22)] = NEW_L1_ENTRY(T_SELF_REF_PERM, pde); @@ -187,10 +188,11 @@ vmm_mount_pd(uintptr_t mnt, void* pde) return mnt; } -void* -vmm_unmount_pd(uintptr_t mnt) +ptr_t +vmm_unmount_pd(ptr_t mnt) { x86_page_table* l1pt = (x86_page_table*)L1_BASE_VADDR; l1pt->entry[(mnt >> 22)] = 0; cpu_invplg(mnt); + return mnt; } \ No newline at end of file