forked from KolibriOS/kolibrios
551 lines
16 KiB
C
551 lines
16 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>
|
|
#include <linux/bitops.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/typecheck.h>
|
|
|
|
#define __init
|
|
|
|
#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 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)
|
|
|
|
#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 clamp_t(type, val, min, max) ({ \
|
|
type __val = (val); \
|
|
type __min = (min); \
|
|
type __max = (max); \
|
|
__val = __val < __min ? __min: __val; \
|
|
__val > __max ? __max: __val; })
|
|
|
|
|
|
|
|
/**
|
|
* 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 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 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;
|
|
}
|
|
|
|
enum {
|
|
DUMP_PREFIX_NONE,
|
|
DUMP_PREFIX_ADDRESS,
|
|
DUMP_PREFIX_OFFSET
|
|
};
|
|
|
|
int hex_to_bin(char ch);
|
|
int hex2bin(u8 *dst, const char *src, size_t count);
|
|
|
|
|
|
//int printk(const char *fmt, ...);
|
|
|
|
#define printk(fmt, arg...) dbgprintf(fmt , ##arg)
|
|
|
|
extern __printf(2, 3) int sprintf(char *buf, const char * fmt, ...);
|
|
extern __printf(2, 3)
|
|
char *kasprintf(gfp_t gfp, const char *fmt, ...);
|
|
|
|
/*
|
|
* 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) ({ \
|
|
typeof(x) _min1 = (x); \
|
|
typeof(y) _min2 = (y); \
|
|
typeof(z) _min3 = (z); \
|
|
(void) (&_min1 == &_min2); \
|
|
(void) (&_min1 == &_min3); \
|
|
_min1 < _min2 ? (_min1 < _min3 ? _min1 : _min3) : \
|
|
(_min2 < _min3 ? _min2 : _min3); })
|
|
|
|
#define max3(x, y, z) ({ \
|
|
typeof(x) _max1 = (x); \
|
|
typeof(y) _max2 = (y); \
|
|
typeof(z) _max3 = (z); \
|
|
(void) (&_max1 == &_max2); \
|
|
(void) (&_max1 == &_max3); \
|
|
_max1 > _max2 ? (_max1 > _max3 ? _max1 : _max3) : \
|
|
(_max2 > _max3 ? _max2 : _max3); })
|
|
|
|
/**
|
|
* 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
|
|
* @min: minimum allowable value
|
|
* @max: maximum allowable value
|
|
*
|
|
* This macro does strict typechecking of min/max to make sure they are of the
|
|
* same type as val. See the unnecessary pointer comparisons.
|
|
*/
|
|
#define clamp(val, min, max) ({ \
|
|
typeof(val) __val = (val); \
|
|
typeof(min) __min = (min); \
|
|
typeof(max) __max = (max); \
|
|
(void) (&__val == &__min); \
|
|
(void) (&__val == &__max); \
|
|
__val = __val < __min ? __min: __val; \
|
|
__val > __max ? __max: __val; })
|
|
|
|
/*
|
|
* ..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);
|
|
}
|
|
|
|
|
|
void free (void *ptr);
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
typedef unsigned long pgprotval_t;
|
|
|
|
typedef struct pgprot { pgprotval_t pgprot; } pgprot_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)
|
|
|
|
struct timespec {
|
|
long tv_sec; /* seconds */
|
|
long tv_nsec; /* nanoseconds */
|
|
};
|
|
|
|
|
|
#define mb() asm volatile("mfence" : : : "memory")
|
|
#define rmb() asm volatile("lfence" : : : "memory")
|
|
#define wmb() asm volatile("sfence" : : : "memory")
|
|
|
|
|
|
#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
|
|
|
|
static inline __u64 readq(const volatile void __iomem *addr)
|
|
{
|
|
const volatile u32 __iomem *p = addr;
|
|
u32 low, high;
|
|
|
|
low = readl(p);
|
|
high = readl(p + 1);
|
|
|
|
return low + ((u64)high << 32);
|
|
}
|
|
|
|
static inline void writeq(__u64 val, volatile void __iomem *addr)
|
|
{
|
|
writel(val, addr);
|
|
writel(val >> 32, addr+4);
|
|
}
|
|
|
|
#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)
|
|
|
|
//#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
|
|
#define BUILD_BUG_ON(condition)
|
|
|
|
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 set_pages_uc(a,b)
|
|
#define set_pages_wb(a,b)
|
|
|
|
#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 GFP_TEMPORARY 0
|
|
#define __GFP_NOWARN 0
|
|
#define __GFP_NORETRY 0
|
|
#define GFP_NOWAIT 0
|
|
|
|
#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); \
|
|
})
|
|
|
|
|
|
unsigned int hweight16(unsigned int w);
|
|
|
|
#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;
|
|
}
|
|
}
|
|
|
|
memcpy((void __force *)to, from, n);
|
|
return 0;
|
|
}
|
|
|
|
struct seq_file;
|
|
|
|
#endif
|
|
|