| 0,0 → 1,102 |
|---|
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup genericmm |
| * @{ |
| */ |
| /** @file |
| */ |
| |
| #ifndef __PAGE_H__ |
| #define __PAGE_H__ |
| |
| #include <arch/mm/asid.h> |
| #include <arch/types.h> |
| #include <typedefs.h> |
| #include <memstr.h> |
| |
| #define PAGE_CACHEABLE_SHIFT 0 |
| #define PAGE_NOT_CACHEABLE_SHIFT PAGE_CACHEABLE_SHIFT |
| #define PAGE_PRESENT_SHIFT 1 |
| #define PAGE_NOT_PRESENT_SHIFT PAGE_PRESENT_SHIFT |
| #define PAGE_USER_SHIFT 2 |
| #define PAGE_KERNEL_SHIFT PAGE_USER_SHIFT |
| #define PAGE_READ_SHIFT 3 |
| #define PAGE_WRITE_SHIFT 4 |
| #define PAGE_EXEC_SHIFT 5 |
| #define PAGE_GLOBAL_SHIFT 6 |
| |
| #define PAGE_NOT_CACHEABLE (0<<PAGE_CACHEABLE_SHIFT) |
| #define PAGE_CACHEABLE (1<<PAGE_CACHEABLE_SHIFT) |
| |
| #define PAGE_PRESENT (0<<PAGE_PRESENT_SHIFT) |
| #define PAGE_NOT_PRESENT (1<<PAGE_PRESENT_SHIFT) |
| |
| #define PAGE_USER (1<<PAGE_USER_SHIFT) |
| #define PAGE_KERNEL (0<<PAGE_USER_SHIFT) |
| |
| #define PAGE_READ (1<<PAGE_READ_SHIFT) |
| #define PAGE_WRITE (1<<PAGE_WRITE_SHIFT) |
| #define PAGE_EXEC (1<<PAGE_EXEC_SHIFT) |
| |
| #define PAGE_GLOBAL (1<<PAGE_GLOBAL_SHIFT) |
| |
| /** Page fault access type. */ |
| enum pf_access { |
| PF_ACCESS_READ, |
| PF_ACCESS_WRITE, |
| PF_ACCESS_EXEC |
| }; |
| typedef enum pf_access pf_access_t; |
| |
| /** Operations to manipulate page mappings. */ |
| struct page_mapping_operations { |
| void (* mapping_insert)(as_t *as, uintptr_t page, uintptr_t frame, int flags); |
| void (* mapping_remove)(as_t *as, uintptr_t page); |
| pte_t *(* mapping_find)(as_t *as, uintptr_t page); |
| }; |
| typedef struct page_mapping_operations page_mapping_operations_t; |
| |
| extern page_mapping_operations_t *page_mapping_operations; |
| |
| extern void page_init(void); |
| extern void page_table_lock(as_t *as, bool lock); |
| extern void page_table_unlock(as_t *as, bool unlock); |
| extern void page_mapping_insert(as_t *as, uintptr_t page, uintptr_t frame, int flags); |
| extern void page_mapping_remove(as_t *as, uintptr_t page); |
| extern pte_t *page_mapping_find(as_t *as, uintptr_t page); |
| extern pte_t *page_table_create(int flags); |
| extern void page_table_destroy(pte_t *page_table); |
| extern void map_structure(uintptr_t s, size_t size); |
| extern uintptr_t hw_map(uintptr_t physaddr, size_t size); |
| |
| #endif |
| |
| /** @} |
| */ |
| |