projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 61e85e36 JB |
1 | /* |
| 2 | * OpenRISC Linux | |
| 3 | * | |
| 4 | * Linux architectural port borrowing liberally from similar works of | |
| 5 | * others. All original copyrights apply as per the original source | |
| 6 | * declaration. | |
| 7 | * | |
| 8 | * OpenRISC implementation: | |
| 9 | * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> | |
| 10 | * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> | |
| 11 | * et al. | |
| 12 | * | |
| 13 | * This program is free software; you can redistribute it and/or modify | |
| 14 | * it under the terms of the GNU General Public License as published by | |
| 15 | * the Free Software Foundation; either version 2 of the License, or | |
| 16 | * (at your option) any later version. | |
| 17 | */ | |
| 18 | ||
| 19 | #ifndef __ASM_OPENRISC_PAGE_H | |
| 20 | #define __ASM_OPENRISC_PAGE_H | |
| 21 | ||
| 22 | ||
| 23 | /* PAGE_SHIFT determines the page size */ | |
| 24 | ||
| 25 | #define PAGE_SHIFT 13 | |
| 26 | #ifdef __ASSEMBLY__ | |
| 27 | #define PAGE_SIZE (1 << PAGE_SHIFT) | |
| 28 | #else | |
| 29 | #define PAGE_SIZE (1UL << PAGE_SHIFT) | |
| 30 | #endif | |
| 31 | #define PAGE_MASK (~(PAGE_SIZE-1)) | |
| 32 | ||
| 33 | #define PAGE_OFFSET 0xc0000000 | |
| 34 | #define KERNELBASE PAGE_OFFSET | |
| 35 | ||
| 36 | /* This is not necessarily the right place for this, but it's needed by | |
| 37 | * drivers/of/fdt.c | |
| 38 | */ | |
| 39 | #include <asm/setup.h> | |
| 40 | ||
| 41 | #ifndef __ASSEMBLY__ | |
| 42 | ||
| 61e85e36 JB |
43 | #define clear_page(page) memset((page), 0, PAGE_SIZE) |
| 44 | #define copy_page(to, from) memcpy((to), (from), PAGE_SIZE) | |
| 45 | ||
| 46 | #define clear_user_page(page, vaddr, pg) clear_page(page) | |
| 47 | #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) | |
| 48 | ||
| 49 | /* | |
| 50 | * These are used to make use of C type-checking.. | |
| 51 | */ | |
| 52 | typedef struct { | |
| 53 | unsigned long pte; | |
| 54 | } pte_t; | |
| 55 | typedef struct { | |
| 56 | unsigned long pgd; | |
| 57 | } pgd_t; | |
| 58 | typedef struct { | |
| 59 | unsigned long pgprot; | |
| 60 | } pgprot_t; | |
| 61 | typedef struct page *pgtable_t; | |
| 62 | ||
| 63 | #define pte_val(x) ((x).pte) | |
| 64 | #define pgd_val(x) ((x).pgd) | |
| 65 | #define pgprot_val(x) ((x).pgprot) | |
| 66 | ||
| 67 | #define __pte(x) ((pte_t) { (x) }) | |
| 68 | #define __pgd(x) ((pgd_t) { (x) }) | |
| 69 | #define __pgprot(x) ((pgprot_t) { (x) }) | |
| 70 | ||
| 61e85e36 JB |
71 | #endif /* !__ASSEMBLY__ */ |
| 72 | ||
| 73 | ||
| 74 | #ifndef __ASSEMBLY__ | |
| 75 | ||
| 76 | #define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET)) | |
| 77 | #define __pa(x) ((unsigned long) (x) - PAGE_OFFSET) | |
| 78 | ||
| 79 | #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) | |
| 80 | #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) | |
| 81 | ||
| 82 | #define virt_to_page(addr) \ | |
| 83 | (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)) | |
| 61e85e36 JB |
84 | |
| 85 | #define page_to_phys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT) | |
| 86 | ||
| 87 | #define pfn_valid(pfn) ((pfn) < max_mapnr) | |
| 88 | ||
| 2f099a28 | 89 | #define virt_addr_valid(kaddr) (pfn_valid(virt_to_pfn(kaddr))) |
| 61e85e36 JB |
90 | |
| 91 | #endif /* __ASSEMBLY__ */ | |
| 92 | ||
| 93 | ||
| 94 | #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ | |
| 95 | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) | |
| 96 | ||
| 97 | ||
| 98 | #include <asm-generic/memory_model.h> | |
| 99 | #include <asm-generic/getorder.h> | |
| 100 | ||
| 101 | #endif /* __ASM_OPENRISC_PAGE_H */ |