168 lines
4.8 KiB
C
168 lines
4.8 KiB
C
#ifndef _LINUX_KERNEL_H
|
|
#define _LINUX_KERNEL_H
|
|
|
|
/*
|
|
* 'kernel.h' contains some often-used function prototypes etc
|
|
*/
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <stdarg.h>
|
|
#include <linux/stddef.h>
|
|
#include <linux/types.h>
|
|
#include <linux/compiler.h>
|
|
|
|
#define USHORT_MAX ((u16)(~0U))
|
|
#define SHORT_MAX ((s16)(USHORT_MAX>>1))
|
|
#define SHORT_MIN (-SHORT_MAX - 1)
|
|
#define INT_MAX ((int)(~0U>>1))
|
|
#define INT_MIN (-INT_MAX - 1)
|
|
#define UINT_MAX (~0U)
|
|
#define LONG_MAX ((long)(~0UL>>1))
|
|
#define LONG_MIN (-LONG_MAX - 1)
|
|
#define ULONG_MAX (~0UL)
|
|
#define LLONG_MAX ((long long)(~0ULL>>1))
|
|
#define LLONG_MIN (-LLONG_MAX - 1)
|
|
#define ULLONG_MAX (~0ULL)
|
|
|
|
#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
|
|
#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
|
|
#define PTR_ALIGN(p, a) ((typeof(p))ALIGN((unsigned long)(p), (a)))
|
|
#define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0)
|
|
|
|
/**
|
|
* upper_32_bits - return bits 32-63 of a number
|
|
* @n: the number we're accessing
|
|
*
|
|
* A basic shift-right of a 64- or 32-bit quantity. Use this to suppress
|
|
* the "right shift count >= width of type" warning when that quantity is
|
|
* 32-bits.
|
|
*/
|
|
#define upper_32_bits(n) ((u32)(((n) >> 16) >> 16))
|
|
|
|
/**
|
|
* lower_32_bits - return bits 0-31 of a number
|
|
* @n: the number we're accessing
|
|
*/
|
|
#define lower_32_bits(n) ((u32)(n))
|
|
|
|
|
|
#define KERN_EMERG "<0>" /* system is unusable */
|
|
#define KERN_ALERT "<1>" /* action must be taken immediately */
|
|
#define KERN_CRIT "<2>" /* critical conditions */
|
|
#define KERN_ERR "<3>" /* error conditions */
|
|
#define KERN_WARNING "<4>" /* warning conditions */
|
|
#define KERN_NOTICE "<5>" /* normal but significant condition */
|
|
#define KERN_INFO "<6>" /* informational */
|
|
#define KERN_DEBUG "<7>" /* debug-level messages */
|
|
|
|
//int printk(const char *fmt, ...);
|
|
|
|
#define printk(fmt, arg...) dbgprintf(fmt , ##arg)
|
|
|
|
|
|
/*
|
|
* min()/max()/clamp() macros that also do
|
|
* strict type-checking.. See the
|
|
* "unnecessary" pointer comparison.
|
|
*/
|
|
#define min(x, y) ({ \
|
|
typeof(x) _min1 = (x); \
|
|
typeof(y) _min2 = (y); \
|
|
(void) (&_min1 == &_min2); \
|
|
_min1 < _min2 ? _min1 : _min2; })
|
|
|
|
#define max(x, y) ({ \
|
|
typeof(x) _max1 = (x); \
|
|
typeof(y) _max2 = (y); \
|
|
(void) (&_max1 == &_max2); \
|
|
_max1 > _max2 ? _max1 : _max2; })
|
|
|
|
/*
|
|
* ..and if you can't take the strict
|
|
* types, you can specify one yourself.
|
|
*
|
|
* Or not use min/max/clamp at all, of course.
|
|
*/
|
|
#define min_t(type, x, y) ({ \
|
|
type __min1 = (x); \
|
|
type __min2 = (y); \
|
|
__min1 < __min2 ? __min1: __min2; })
|
|
|
|
#define max_t(type, x, y) ({ \
|
|
type __max1 = (x); \
|
|
type __max2 = (y); \
|
|
__max1 > __max2 ? __max1: __max2; })
|
|
|
|
/**
|
|
* container_of - cast a member of a structure out to the containing structure
|
|
* @ptr: the pointer to the member.
|
|
* @type: the type of the container struct this is embedded in.
|
|
* @member: the name of the member within the struct.
|
|
*
|
|
*/
|
|
#define container_of(ptr, type, member) ({ \
|
|
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
|
|
(type *)( (char *)__mptr - offsetof(type,member) );})
|
|
|
|
|
|
static inline void *kcalloc(size_t n, size_t size, uint32_t flags)
|
|
{
|
|
if (n != 0 && size > ULONG_MAX / n)
|
|
return NULL;
|
|
return kzalloc(n * size, 0);
|
|
}
|
|
|
|
extern const char hex_asc[];
|
|
#define hex_asc_lo(x) hex_asc[((x) & 0x0f)]
|
|
#define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4]
|
|
|
|
static inline char *pack_hex_byte(char *buf, u8 byte)
|
|
{
|
|
*buf++ = hex_asc_hi(byte);
|
|
*buf++ = hex_asc_lo(byte);
|
|
return buf;
|
|
}
|
|
|
|
|
|
void free (void *ptr);
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
typedef unsigned long pgprotval_t;
|
|
|
|
typedef struct pgprot { pgprotval_t pgprot; } pgprot_t;
|
|
|
|
struct file {};
|
|
struct vm_area_struct {};
|
|
struct address_space {};
|
|
|
|
struct device
|
|
{
|
|
struct device *parent;
|
|
void *driver_data;
|
|
};
|
|
|
|
static inline void dev_set_drvdata(struct device *dev, void *data)
|
|
{
|
|
dev->driver_data = data;
|
|
}
|
|
|
|
static inline void *dev_get_drvdata(struct device *dev)
|
|
{
|
|
return dev->driver_data;
|
|
}
|
|
|
|
#define preempt_disable() do { } while (0)
|
|
#define preempt_enable_no_resched() do { } while (0)
|
|
#define preempt_enable() do { } while (0)
|
|
#define preempt_check_resched() do { } while (0)
|
|
|
|
#define preempt_disable_notrace() do { } while (0)
|
|
#define preempt_enable_no_resched_notrace() do { } while (0)
|
|
#define preempt_enable_notrace() do { } while (0)
|
|
|
|
|
|
#endif
|
|
|