1 #ifndef KERNEL_H 2 #define KERNEL_H 3 #include <stdbool.h> 4 #include <stdlib.h> 5 #include <stddef.h> 6 #include <stdio.h> 7 #include <string.h> 8 #include <assert.h> 9 #include <stdarg.h> 10 11 #include <linux/types.h> 12 #include <linux/printk.h> 13 #include <linux/bug.h> 14 #include <errno.h> 15 #include <unistd.h> 16 #include <asm/barrier.h> 17 18 #define CONFIG_SMP 19 20 #define PAGE_SIZE getpagesize() 21 #define PAGE_MASK (~(PAGE_SIZE-1)) 22 23 typedef unsigned long long dma_addr_t; 24 typedef size_t __kernel_size_t; 25 26 struct page { 27 unsigned long long dummy; 28 }; 29 30 /* Physical == Virtual */ 31 #define virt_to_phys(p) ((unsigned long)p) 32 #define phys_to_virt(a) ((void *)(unsigned long)(a)) 33 /* Page address: Virtual / 4K */ 34 #define page_to_phys(p) ((dma_addr_t)(unsigned long)(p)) 35 #define virt_to_page(p) ((struct page *)((unsigned long)p & PAGE_MASK)) 36 37 #define offset_in_page(p) (((unsigned long)p) % PAGE_SIZE) 38 39 #define __printf(a,b) __attribute__((format(printf,a,b))) 40 41 typedef enum { 42 GFP_KERNEL, 43 GFP_ATOMIC, 44 __GFP_HIGHMEM, 45 __GFP_HIGH 46 } gfp_t; 47 48 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) 49 50 extern void *__kmalloc_fake, *__kfree_ignore_start, *__kfree_ignore_end; 51 static inline void *kmalloc(size_t s, gfp_t gfp) 52 { 53 if (__kmalloc_fake) 54 return __kmalloc_fake; 55 return malloc(s); 56 } 57 58 static inline void kfree(void *p) 59 { 60 if (p >= __kfree_ignore_start && p < __kfree_ignore_end) 61 return; 62 free(p); 63 } 64 65 static inline void *krealloc(void *p, size_t s, gfp_t gfp) 66 { 67 return realloc(p, s); 68 } 69 70 71 static inline unsigned long __get_free_page(gfp_t gfp) 72 { 73 void *p; 74 75 posix_memalign(&p, PAGE_SIZE, PAGE_SIZE); 76 return (unsigned long)p; 77 } 78 79 static inline void free_page(unsigned long addr) 80 { 81 free((void *)addr); 82 } 83 84 #define container_of(ptr, type, member) ({ \ 85 const typeof( ((type *)0)->member ) *__mptr = (ptr); \ 86 (type *)( (char *)__mptr - offsetof(type,member) );}) 87 88 #define uninitialized_var(x) x = x 89 90 # ifndef likely 91 # define likely(x) (__builtin_expect(!!(x), 1)) 92 # endif 93 # ifndef unlikely 94 # define unlikely(x) (__builtin_expect(!!(x), 0)) 95 # endif 96 97 #define pr_err(format, ...) fprintf (stderr, format, ## __VA_ARGS__) 98 #ifdef DEBUG 99 #define pr_debug(format, ...) fprintf (stderr, format, ## __VA_ARGS__) 100 #else 101 #define pr_debug(format, ...) do {} while (0) 102 #endif 103 #define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__) 104 #define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__) 105 106 #define min(x, y) ({ \ 107 typeof(x) _min1 = (x); \ 108 typeof(y) _min2 = (y); \ 109 (void) (&_min1 == &_min2); \ 110 _min1 < _min2 ? _min1 : _min2; }) 111 112 #endif /* KERNEL_H */ 113