kolibrios/drivers/include/linux/kernel.h

#ifndef _LINUX_KERNEL_H
#define _LINUX_KERNEL_H


#include <stdarg.h>
#include <linux/linkage.h>
#include <linux/stddef.h>
#include <linux/types.h>
#include <linux/compiler.h>
#include <linux/bitops.h>
#include <linux/log2.h>
#include <linux/typecheck.h>
#include <linux/printk.h>
#include <asm/byteorder.h>
#include <uapi/linux/kernel.h>

#define USHRT_MAX	((u16)(~0U))
#define SHRT_MAX	((s16)(USHRT_MAX>>1))
#define SHRT_MIN	((s16)(-SHRT_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 SIZE_MAX	(~(size_t)0)

#define U8_MAX		((u8)~0U)
#define S8_MAX		((s8)(U8_MAX>>1))
#define S8_MIN		((s8)(-S8_MAX - 1))
#define U16_MAX		((u16)~0U)
#define S16_MAX		((s16)(U16_MAX>>1))
#define S16_MIN		((s16)(-S16_MAX - 1))
#define U32_MAX		((u32)~0U)
#define S32_MAX		((s32)(U32_MAX>>1))
#define S32_MIN		((s32)(-S32_MAX - 1))
#define U64_MAX		((u64)~0ULL)
#define S64_MAX		((s64)(U64_MAX>>1))
#define S64_MIN		((s64)(-S64_MAX - 1))

#define STACK_MAGIC	0xdeadbeef

#define REPEAT_BYTE(x)	((~0ul / 0xff) * (x))

#define ALIGN(x, a)		__ALIGN_KERNEL((x), (a))
#define __ALIGN_MASK(x, mask)	__ALIGN_KERNEL_MASK((x), (mask))
#define PTR_ALIGN(p, a)     ((typeof(p))ALIGN((unsigned long)(p), (a)))
#define IS_ALIGNED(x, a)        (((x) & ((typeof(x))(a) - 1)) == 0)

#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))

/*
 * This looks more complex than it should be. But we need to
 * get the type for the ~ right in round_down (it needs to be
 * as wide as the result!), and we want to evaluate the macro
 * arguments just once each.
 */
#define __round_mask(x, y) ((__typeof__(x))((y)-1))
#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)
#define round_down(x, y) ((x) & ~__round_mask(x, y))

#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
#define DIV_ROUND_UP_ULL(ll,d) \
	({ unsigned long long _tmp = (ll)+(d)-1; do_div(_tmp, d); _tmp; })

#if BITS_PER_LONG == 32
# define DIV_ROUND_UP_SECTOR_T(ll,d) DIV_ROUND_UP_ULL(ll, d)
#else
# define DIV_ROUND_UP_SECTOR_T(ll,d) DIV_ROUND_UP(ll,d)
#endif

/* The `const' in roundup() prevents gcc-3.3 from calling __divdi3 */
#define roundup(x, y) (                                 \
{                                                       \
        const typeof(y) __y = y;                        \
        (((x) + (__y - 1)) / __y) * __y;                \
}                                                       \
)
#define rounddown(x, y) (				\
{							\
	typeof(x) __x = (x);				\
	__x - (__x % (y));				\
}							\
)

/*
 * Divide positive or negative dividend by positive divisor and round
 * to closest integer. Result is undefined for negative divisors and
 * for negative dividends if the divisor variable type is unsigned.
 */
#define DIV_ROUND_CLOSEST(x, divisor)(                  \
{                                                       \
	typeof(x) __x = x;				\
	typeof(divisor) __d = divisor;			\
	(((typeof(x))-1) > 0 ||				\
	 ((typeof(divisor))-1) > 0 || (__x) > 0) ?	\
		(((__x) + ((__d) / 2)) / (__d)) :	\
		(((__x) - ((__d) / 2)) / (__d));	\
}                                                       \
)

/*
 * Multiplies an integer by a fraction, while avoiding unnecessary
 * overflow or loss of precision.
 */
#define mult_frac(x, numer, denom)(			\
{							\
	typeof(x) quot = (x) / (denom);			\
	typeof(x) rem  = (x) % (denom);			\
	(quot * (numer)) + ((rem * (numer)) / (denom));	\
}							\
)


#define _RET_IP_		(unsigned long)__builtin_return_address(0)
#define _THIS_IP_  ({ __label__ __here; __here: (unsigned long)&&__here; })

#ifdef CONFIG_LBDAF
# include <asm/div64.h>
# define sector_div(a, b) do_div(a, b)
#else
# define sector_div(n, b)( \
{ \
	int _res; \
	_res = (n) % (b); \
	(n) /= (b); \
	_res; \
} \
)
#endif

/**
 * 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))


/*
 * abs() handles unsigned and signed longs, ints, shorts and chars.  For all
 * input types abs() returns a signed long.
 * abs() should not be used for 64-bit types (s64, u64, long long) - use abs64()
 * for those.
 */
#define abs(x) ({						\
		long ret;					\
		if (sizeof(x) == sizeof(long)) {		\
			long __x = (x);				\
			ret = (__x < 0) ? -__x : __x;		\
		} else {					\
			int __x = (x);				\
			ret = (__x < 0) ? -__x : __x;		\
		}						\
		ret;						\
	})

#define abs64(x) ({                             \
                s64 __x = (x);                  \
                (__x < 0) ? -__x : __x;         \
        })

#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                 */
extern __printf(2, 3) int sprintf(char *buf, const char * fmt, ...);
extern __printf(2, 0) int vsprintf(char *buf, const char *, va_list);
extern __printf(3, 4)
int snprintf(char *buf, size_t size, const char *fmt, ...);
extern __printf(3, 0)
int vsnprintf(char *buf, size_t size, const char *fmt, va_list args);
extern __printf(3, 4)
int scnprintf(char *buf, size_t size, const char *fmt, ...);
extern __printf(3, 0)
int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);
extern __printf(2, 3)
char *kasprintf(gfp_t gfp, const char *fmt, ...);
extern char *kvasprintf(gfp_t gfp, const char *fmt, va_list args);
enum lockdep_ok {
	LOCKDEP_STILL_OK,
	LOCKDEP_NOW_UNRELIABLE
};
extern void add_taint(unsigned flag, enum lockdep_ok);
extern int test_taint(unsigned flag);
extern unsigned long get_taint(void);
extern int root_mountflags;

extern bool early_boot_irqs_disabled;

/* Values used for system_state */
extern enum system_states {
	SYSTEM_BOOTING,
	SYSTEM_RUNNING,
	SYSTEM_HALT,
	SYSTEM_POWER_OFF,
	SYSTEM_RESTART,
} system_state;

#define TAINT_PROPRIETARY_MODULE	0
#define TAINT_FORCED_MODULE		1
#define TAINT_CPU_OUT_OF_SPEC		2
#define TAINT_FORCED_RMMOD		3
#define TAINT_MACHINE_CHECK		4
#define TAINT_BAD_PAGE			5
#define TAINT_USER			6
#define TAINT_DIE			7
#define TAINT_OVERRIDDEN_ACPI_TABLE	8
#define TAINT_WARN			9
#define TAINT_CRAP			10
#define TAINT_FIRMWARE_WORKAROUND	11
#define TAINT_OOT_MODULE		12
#define TAINT_UNSIGNED_MODULE		13
#define TAINT_SOFTLOCKUP		14

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 *hex_byte_pack(char *buf, u8 byte)
{
	*buf++ = hex_asc_hi(byte);
	*buf++ = hex_asc_lo(byte);
	return buf;
}

extern const char hex_asc_upper[];
#define hex_asc_upper_lo(x)	hex_asc_upper[((x) & 0x0f)]
#define hex_asc_upper_hi(x)	hex_asc_upper[((x) & 0xf0) >> 4]

static inline char *hex_byte_pack_upper(char *buf, u8 byte)
{
	*buf++ = hex_asc_upper_hi(byte);
	*buf++ = hex_asc_upper_lo(byte);
	return buf;
}

extern int hex_to_bin(char ch);
extern int __must_check hex2bin(u8 *dst, const char *src, size_t count);
extern char *bin2hex(char *dst, const void *src, size_t count);

bool mac_pton(const char *s, u8 *mac);

/*
 * General tracing related utility functions - trace_printk(),
 * tracing_on/tracing_off and tracing_start()/tracing_stop
 *
 * Use tracing_on/tracing_off when you want to quickly turn on or off
 * tracing. It simply enables or disables the recording of the trace events.
 * This also corresponds to the user space /sys/kernel/debug/tracing/tracing_on
 * file, which gives a means for the kernel and userspace to interact.
 * Place a tracing_off() in the kernel where you want tracing to end.
 * From user space, examine the trace, and then echo 1 > tracing_on
 * to continue tracing.
 *
 * tracing_stop/tracing_start has slightly more overhead. It is used
 * by things like suspend to ram where disabling the recording of the
 * trace is not enough, but tracing must actually stop because things
 * like calling smp_processor_id() may crash the system.
 *
 * Most likely, you want to use tracing_on/tracing_off.
 */
#ifdef CONFIG_RING_BUFFER
/* trace_off_permanent stops recording with no way to bring it back */
void tracing_off_permanent(void);
#else
static inline void tracing_off_permanent(void) { }
#endif

enum ftrace_dump_mode {
	DUMP_NONE,
	DUMP_ALL,
	DUMP_ORIG,
};

#ifdef CONFIG_TRACING
void tracing_on(void);
void tracing_off(void);
int tracing_is_on(void);
void tracing_snapshot(void);
void tracing_snapshot_alloc(void);

extern void tracing_start(void);
extern void tracing_stop(void);

static inline __printf(1, 2)
void ____trace_printk_check_format(const char *fmt, ...)
{
}
#define __trace_printk_check_format(fmt, args...)			\
do {									\
	if (0)								\
		____trace_printk_check_format(fmt, ##args);		\
} while (0)

/**
 * trace_printk - printf formatting in the ftrace buffer
 * @fmt: the printf format for printing
 *
 * Note: __trace_printk is an internal function for trace_printk and
 *       the @ip is passed in via the trace_printk macro.
 *
 * This function allows a kernel developer to debug fast path sections
 * that printk is not appropriate for. By scattering in various
 * printk like tracing in the code, a developer can quickly see
 * where problems are occurring.
 *
 * This is intended as a debugging tool for the developer only.
 * Please refrain from leaving trace_printks scattered around in
 * your code. (Extra memory is used for special buffers that are
 * allocated when trace_printk() is used)
 *
 * A little optization trick is done here. If there's only one
 * argument, there's no need to scan the string for printf formats.
 * The trace_puts() will suffice. But how can we take advantage of
 * using trace_puts() when trace_printk() has only one argument?
 * By stringifying the args and checking the size we can tell
 * whether or not there are args. __stringify((__VA_ARGS__)) will
 * turn into "()\0" with a size of 3 when there are no args, anything
 * else will be bigger. All we need to do is define a string to this,
 * and then take its size and compare to 3. If it's bigger, use
 * do_trace_printk() otherwise, optimize it to trace_puts(). Then just
 * let gcc optimize the rest.
 */

#define trace_printk(fmt, ...)				\
do {							\
	char _______STR[] = __stringify((__VA_ARGS__));	\
	if (sizeof(_______STR) > 3)			\
		do_trace_printk(fmt, ##__VA_ARGS__);	\
	else						\
		trace_puts(fmt);			\
} while (0)

#define do_trace_printk(fmt, args...)					\
do {									\
	static const char *trace_printk_fmt				\
		__attribute__((section("__trace_printk_fmt"))) =	\
		__builtin_constant_p(fmt) ? fmt : NULL;			\
									\
	__trace_printk_check_format(fmt, ##args);			\
									\
	if (__builtin_constant_p(fmt))					\
		__trace_bprintk(_THIS_IP_, trace_printk_fmt, ##args);	\
	else								\
		__trace_printk(_THIS_IP_, fmt, ##args);			\
} while (0)

extern __printf(2, 3)
int __trace_bprintk(unsigned long ip, const char *fmt, ...);

extern __printf(2, 3)
int __trace_printk(unsigned long ip, const char *fmt, ...);

/**
 * trace_puts - write a string into the ftrace buffer
 * @str: the string to record
 *
 * Note: __trace_bputs is an internal function for trace_puts and
 *       the @ip is passed in via the trace_puts macro.
 *
 * This is similar to trace_printk() but is made for those really fast
 * paths that a developer wants the least amount of "Heisenbug" affects,
 * where the processing of the print format is still too much.
 *
 * This function allows a kernel developer to debug fast path sections
 * that printk is not appropriate for. By scattering in various
 * printk like tracing in the code, a developer can quickly see
 * where problems are occurring.
 *
 * This is intended as a debugging tool for the developer only.
 * Please refrain from leaving trace_puts scattered around in
 * your code. (Extra memory is used for special buffers that are
 * allocated when trace_puts() is used)
 *
 * Returns: 0 if nothing was written, positive # if string was.
 *  (1 when __trace_bputs is used, strlen(str) when __trace_puts is used)
 */

#define trace_puts(str) ({						\
	static const char *trace_printk_fmt				\
		__attribute__((section("__trace_printk_fmt"))) =	\
		__builtin_constant_p(str) ? str : NULL;			\
									\
	if (__builtin_constant_p(str))					\
		__trace_bputs(_THIS_IP_, trace_printk_fmt);		\
	else								\
		__trace_puts(_THIS_IP_, str, strlen(str));		\
})
extern int __trace_bputs(unsigned long ip, const char *str);
extern int __trace_puts(unsigned long ip, const char *str, int size);

extern void trace_dump_stack(int skip);

/*
 * The double __builtin_constant_p is because gcc will give us an error
 * if we try to allocate the static variable to fmt if it is not a
 * constant. Even with the outer if statement.
 */
#define ftrace_vprintk(fmt, vargs)					\
do {									\
	if (__builtin_constant_p(fmt)) {				\
		static const char *trace_printk_fmt			\
		  __attribute__((section("__trace_printk_fmt"))) =	\
			__builtin_constant_p(fmt) ? fmt : NULL;		\
									\
		__ftrace_vbprintk(_THIS_IP_, trace_printk_fmt, vargs);	\
	} else								\
		__ftrace_vprintk(_THIS_IP_, fmt, vargs);		\
} while (0)

extern int
__ftrace_vbprintk(unsigned long ip, const char *fmt, va_list ap);

extern int
__ftrace_vprintk(unsigned long ip, const char *fmt, va_list ap);

extern void ftrace_dump(enum ftrace_dump_mode oops_dump_mode);
#else
static inline void tracing_start(void) { }
static inline void tracing_stop(void) { }
static inline void trace_dump_stack(int skip) { }

static inline void tracing_on(void) { }
static inline void tracing_off(void) { }
static inline int tracing_is_on(void) { return 0; }
static inline void tracing_snapshot(void) { }
static inline void tracing_snapshot_alloc(void) { }

static inline __printf(1, 2)
int trace_printk(const char *fmt, ...)
{
	return 0;
}
static inline int
ftrace_vprintk(const char *fmt, va_list ap)
{
	return 0;
}
static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { }
#endif /* CONFIG_TRACING */

/*
 * 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; })

#define min3(x, y, z) min((typeof(x))min(x, y), z)
#define max3(x, y, z) max((typeof(x))max(x, y), z)

/**
 * min_not_zero - return the minimum that is _not_ zero, unless both are zero
 * @x: value1
 * @y: value2
 */
#define min_not_zero(x, y) ({			\
	typeof(x) __x = (x);			\
	typeof(y) __y = (y);			\
	__x == 0 ? __y : ((__y == 0) ? __x : min(__x, __y)); })

/**
 * clamp - return a value clamped to a given range with strict typechecking
 * @val: current value
 * @lo: lowest allowable value
 * @hi: highest allowable value
 *
 * This macro does strict typechecking of lo/hi to make sure they are of the
 * same type as val.  See the unnecessary pointer comparisons.
 */
#define clamp(val, lo, hi) min((typeof(val))max(val, lo), hi)

/*
 * ..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; })

/**
 * clamp_t - return a value clamped to a given range using a given type
 * @type: the type of variable to use
 * @val: current value
 * @lo: minimum allowable value
 * @hi: maximum allowable value
 *
 * This macro does no typechecking and uses temporary variables of type
 * 'type' to make all the comparisons.
 */
#define clamp_t(type, val, lo, hi) min_t(type, max_t(type, val, lo), hi)

/**
 * clamp_val - return a value clamped to a given range using val's type
 * @val: current value
 * @lo: minimum allowable value
 * @hi: maximum allowable value
 *
 * This macro does no typechecking and uses temporary variables of whatever
 * type the input argument 'val' is.  This is useful when val is an unsigned
 * type and min and max are literals that will otherwise be assigned a signed
 * integer type.
 */
#define clamp_val(val, lo, hi) clamp_t(typeof(val), val, lo, hi)


/*
 * swap - swap value of @a and @b
 */
#define swap(a, b) \
	do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0)

/**
 * 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) );})

/* Rebuild everything on CONFIG_FTRACE_MCOUNT_RECORD */
#ifdef CONFIG_FTRACE_MCOUNT_RECORD
# define REBUILD_DUE_TO_FTRACE_MCOUNT_RECORD
#endif

/* Permissions on a sysfs file: you didn't miss the 0 prefix did you? */
#define VERIFY_OCTAL_PERMISSIONS(perms)					\
	(BUILD_BUG_ON_ZERO((perms) < 0) +				\
	 BUILD_BUG_ON_ZERO((perms) > 0777) +				\
	 /* User perms >= group perms >= other perms */			\
	 BUILD_BUG_ON_ZERO(((perms) >> 6) < (((perms) >> 3) & 7)) +	\
	 BUILD_BUG_ON_ZERO((((perms) >> 3) & 7) < ((perms) & 7)) +	\
	 /* Other writable?  Generally considered a bad idea. */	\
	 BUILD_BUG_ON_ZERO((perms) & 2) +				\
	 (perms))


void free (void *ptr);


typedef unsigned long   pgprotval_t;


struct file
{
    struct page  **pages;         /* physical memory backend */
    unsigned int   count;
    unsigned int   allocated;
    void           *vma;
};

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)

#define in_dbg_master() (0)

#define HZ 100

struct tvec_base;

struct timer_list {
         struct list_head entry;
         unsigned long expires;

         void (*function)(unsigned long);
         unsigned long data;
         u32  handle;
};

#define setup_timer(_timer, _fn, _data)                                 \
        do {                                                            \
                (_timer)->function = (_fn);                             \
                (_timer)->data = (_data);                               \
                (_timer)->handle = 0;                                   \
        } while (0)

int del_timer(struct timer_list *timer);

# define del_timer_sync(t)              del_timer(t)


#define build_mmio_read(name, size, type, reg, barrier)     \
static inline type name(const volatile void __iomem *addr)  \
{ type ret; asm volatile("mov" size " %1,%0":reg (ret)      \
:"m" (*(volatile type __force *)addr) barrier); return ret; }

#define build_mmio_write(name, size, type, reg, barrier) \
static inline void name(type val, volatile void __iomem *addr) \
{ asm volatile("mov" size " %0,%1": :reg (val), \
"m" (*(volatile type __force *)addr) barrier); }

build_mmio_read(readb, "b", unsigned char, "=q", :"memory")
build_mmio_read(readw, "w", unsigned short, "=r", :"memory")
build_mmio_read(readl, "l", unsigned int, "=r", :"memory")

build_mmio_read(__readb, "b", unsigned char, "=q", )
build_mmio_read(__readw, "w", unsigned short, "=r", )
build_mmio_read(__readl, "l", unsigned int, "=r", )

build_mmio_write(writeb, "b", unsigned char, "q", :"memory")
build_mmio_write(writew, "w", unsigned short, "r", :"memory")
build_mmio_write(writel, "l", unsigned int, "r", :"memory")

build_mmio_write(__writeb, "b", unsigned char, "q", )
build_mmio_write(__writew, "w", unsigned short, "r", )
build_mmio_write(__writel, "l", unsigned int, "r", )

#define readb_relaxed(a) __readb(a)
#define readw_relaxed(a) __readw(a)
#define readl_relaxed(a) __readl(a)
#define __raw_readb __readb
#define __raw_readw __readw
#define __raw_readl __readl

#define __raw_writeb __writeb
#define __raw_writew __writew
#define __raw_writel __writel

#define swap(a, b) \
        do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0)


#define mmiowb() barrier()

#define dev_err(dev, format, arg...)            \
        printk("Error %s " format, __func__ , ## arg)

#define dev_warn(dev, format, arg...)            \
        printk("Warning %s " format, __func__ , ## arg)

#define dev_info(dev, format, arg...)       \
        printk("Info %s " format , __func__, ## arg)

struct page
{
    unsigned int addr;
};

#define page_to_phys(page)    ((dma_addr_t)(page))

struct vm_fault {
    unsigned int flags;             /* FAULT_FLAG_xxx flags */
    pgoff_t pgoff;                  /* Logical page offset based on vma */
    void __user *virtual_address;   /* Faulting virtual address */

    struct page *page;              /* ->fault handlers should return a
                                     * page here, unless VM_FAULT_NOPAGE
                                     * is set (which is also implied by
                                     * VM_FAULT_ERROR).
                                     */
};

struct pagelist {
    dma_addr_t    *page;
    unsigned int   nents;
};

#define page_cache_release(page)        FreePage(page_to_phys(page))

#define alloc_page(gfp_mask) (struct page*)AllocPage()

#define __free_page(page) FreePage(page_to_phys(page))

#define get_page(a)
#define put_page(a)

#define pci_map_page(dev, page, offset, size, direction) \
        (dma_addr_t)( (offset)+page_to_phys(page))

#define pci_unmap_page(dev, dma_address, size, direction)

#define IS_ENABLED(a)  0


#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x))

//#define RCU_INIT_POINTER(p, v) \
//        do { \
//                p = (typeof(*v) __force __rcu *)(v); \
//        } while (0)


//#define rcu_dereference_raw(p)  ({ \
//                                typeof(p) _________p1 = ACCESS_ONCE(p); \
//                                (_________p1); \
//                                })

//#define rcu_assign_pointer(p, v) \
//        ({ \
//                if (!__builtin_constant_p(v) || \
//                    ((v) != NULL)) \
//                (p) = (v); \
//        })



#define cpufreq_quick_get_max(x) GetCpuFreq()

extern unsigned int tsc_khz;

#define on_each_cpu(func,info,wait)             \
        ({                                      \
                func(info);                     \
                0;                              \
        })


static inline __must_check long __copy_to_user(void __user *to,
        const void *from, unsigned long n)
{
    if (__builtin_constant_p(n)) {
        switch(n) {
        case 1:
            *(u8 __force *)to = *(u8 *)from;
            return 0;
        case 2:
            *(u16 __force *)to = *(u16 *)from;
            return 0;
        case 4:
            *(u32 __force *)to = *(u32 *)from;
            return 0;
#ifdef CONFIG_64BIT
        case 8:
            *(u64 __force *)to = *(u64 *)from;
            return 0;
#endif
        default:
            break;
        }
    }

    __builtin_memcpy((void __force *)to, from, n);
    return 0;
}

struct seq_file;

void *kmap(struct page *page);
void *kmap_atomic(struct page *page);
void kunmap(struct page *page);
void kunmap_atomic(void *vaddr);

typedef u64 async_cookie_t;

#define iowrite32(v, addr)      writel((v), (addr))


#define __init

#define CONFIG_PAGE_OFFSET 0


#endif