LXR linux/tools/virtio/linux/kernel.h

   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
  23typedef unsigned long long dma_addr_t;
  24typedef size_t __kernel_size_t;
  25
  26struct 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
  41typedef 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
  50extern void *__kmalloc_fake, *__kfree_ignore_start, *__kfree_ignore_end;
  51static inline void *kmalloc(size_t s, gfp_t gfp)
  52{
  53        if (__kmalloc_fake)
  54                return __kmalloc_fake;
  55        return malloc(s);
  56}
  57
  58static inline void kfree(void *p)
  59{
  60        if (p >= __kfree_ignore_start && p < __kfree_ignore_end)
  61                return;
  62        free(p);
  63}
  64
  65static inline void *krealloc(void *p, size_t s, gfp_t gfp)
  66{
  67        return realloc(p, s);
  68}
  69
  70
  71static 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
  79static 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