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 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) 42 43 extern void *__kmalloc_fake, *__kfree_ignore_start, *__kfree_ignore_end; 44 static inline void *kmalloc(size_t s, gfp_t gfp) 45 { 46 if (__kmalloc_fake) 47 return __kmalloc_fake; 48 return malloc(s); 49 } 50 51 static inline void kfree(void *p) 52 { 53 if (p >= __kfree_ignore_start && p < __kfree_ignore_end) 54 return; 55 free(p); 56 } 57 58 static inline void *krealloc(void *p, size_t s, gfp_t gfp) 59 { 60 return realloc(p, s); 61 } 62 63 64 static inline unsigned long __get_free_page(gfp_t gfp) 65 { 66 void *p; 67 68 posix_memalign(&p, PAGE_SIZE, PAGE_SIZE); 69 return (unsigned long)p; 70 } 71 72 static inline void free_page(unsigned long addr) 73 { 74 free((void *)addr); 75 } 76 77 #define container_of(ptr, type, member) ({ \ 78 const typeof( ((type *)0)->member ) *__mptr = (ptr); \ 79 (type *)( (char *)__mptr - offsetof(type,member) );}) 80 81 #define uninitialized_var(x) x = x 82 83 # ifndef likely 84 # define likely(x) (__builtin_expect(!!(x), 1)) 85 # endif 86 # ifndef unlikely 87 # define unlikely(x) (__builtin_expect(!!(x), 0)) 88 # endif 89 90 #define pr_err(format, ...) fprintf (stderr, format, ## __VA_ARGS__) 91 #ifdef DEBUG 92 #define pr_debug(format, ...) fprintf (stderr, format, ## __VA_ARGS__) 93 #else 94 #define pr_debug(format, ...) do {} while (0) 95 #endif 96 #define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__) 97 #define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__) 98 99 #define min(x, y) ({ \ 100 typeof(x) _min1 = (x); \ 101 typeof(y) _min2 = (y); \ 102 (void) (&_min1 == &_min2); \ 103 _min1 < _min2 ? _min1 : _min2; }) 104 105 #endif /* KERNEL_H */ 106