1#ifndef _LINUX_MM_H 2#define _LINUX_MM_H 3 4#include <assert.h> 5#include <string.h> 6#include <stdlib.h> 7#include <errno.h> 8#include <limits.h> 9#include <stdio.h> 10 11typedef unsigned long dma_addr_t; 12 13#define unlikely 14 15#define BUG_ON(x) assert(!(x)) 16 17#define WARN_ON(condition) ({ \ 18 int __ret_warn_on = !!(condition); \ 19 unlikely(__ret_warn_on); \ 20}) 21 22#define WARN_ON_ONCE(condition) ({ \ 23 int __ret_warn_on = !!(condition); \ 24 if (unlikely(__ret_warn_on)) \ 25 assert(0); \ 26 unlikely(__ret_warn_on); \ 27}) 28 29#define PAGE_SIZE (4096) 30#define PAGE_SHIFT (12) 31#define PAGE_MASK (~(PAGE_SIZE-1)) 32 33#define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1) 34#define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask)) 35#define ALIGN(x, a) __ALIGN_KERNEL((x), (a)) 36 37#define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE) 38 39#define offset_in_page(p) ((unsigned long)(p) & ~PAGE_MASK) 40 41#define virt_to_page(x) ((void *)x) 42#define page_address(x) ((void *)x) 43 44static inline unsigned long page_to_phys(struct page *page) 45{ 46 assert(0); 47 48 return 0; 49} 50 51#define page_to_pfn(page) ((unsigned long)(page) / PAGE_SIZE) 52#define pfn_to_page(pfn) (void *)((pfn) * PAGE_SIZE) 53#define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n)) 54 55#define __min(t1, t2, min1, min2, x, y) ({ \ 56 t1 min1 = (x); \ 57 t2 min2 = (y); \ 58 (void) (&min1 == &min2); \ 59 min1 < min2 ? min1 : min2; }) 60 61#define ___PASTE(a,b) a##b 62#define __PASTE(a,b) ___PASTE(a,b) 63 64#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) 65 66#define min(x, y) \ 67 __min(typeof(x), typeof(y), \ 68 __UNIQUE_ID(min1_), __UNIQUE_ID(min2_), \ 69 x, y) 70 71#define min_t(type, x, y) \ 72 __min(type, type, \ 73 __UNIQUE_ID(min1_), __UNIQUE_ID(min2_), \ 74 x, y) 75 76#define preemptible() (1) 77 78static inline void *kmap(struct page *page) 79{ 80 assert(0); 81 82 return NULL; 83} 84 85static inline void *kmap_atomic(struct page *page) 86{ 87 assert(0); 88 89 return NULL; 90} 91 92static inline void kunmap(void *addr) 93{ 94 assert(0); 95} 96 97static inline void kunmap_atomic(void *addr) 98{ 99 assert(0); 100} 101 102static inline unsigned long __get_free_page(unsigned int flags) 103{ 104 return (unsigned long)malloc(PAGE_SIZE); 105} 106 107static inline void free_page(unsigned long page) 108{ 109 free((void *)page); 110} 111 112static inline void *kmalloc(unsigned int size, unsigned int flags) 113{ 114 return malloc(size); 115} 116 117#define kfree(x) free(x) 118 119#define kmemleak_alloc(a, b, c, d) 120#define kmemleak_free(a) 121 122#define PageSlab(p) (0) 123#define flush_kernel_dcache_page(p) 124 125#endif 126