forked from KolibriOS/kolibrios
389 lines
11 KiB
C
389 lines
11 KiB
C
#ifndef _LINUX_KERNEL_H
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#define _LINUX_KERNEL_H
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/*
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* 'kernel.h' contains some often-used function prototypes etc
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*/
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#ifdef __KERNEL__
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#include <stdarg.h>
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#include <linux/stddef.h>
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#include <linux/types.h>
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#include <linux/compiler.h>
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#include <linux/bitops.h>
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#include <linux/typecheck.h>
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#define __init
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#define USHRT_MAX ((u16)(~0U))
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#define SHRT_MAX ((s16)(USHRT_MAX>>1))
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#define SHRT_MIN ((s16)(-SHRT_MAX - 1))
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#define INT_MAX ((int)(~0U>>1))
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#define INT_MIN (-INT_MAX - 1)
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#define UINT_MAX (~0U)
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#define LONG_MAX ((long)(~0UL>>1))
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#define LONG_MIN (-LONG_MAX - 1)
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#define ULONG_MAX (~0UL)
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#define LLONG_MAX ((long long)(~0ULL>>1))
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#define LLONG_MIN (-LLONG_MAX - 1)
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#define ULLONG_MAX (~0ULL)
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#define SIZE_MAX (~(size_t)0)
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#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
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#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
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#define PTR_ALIGN(p, a) ((typeof(p))ALIGN((unsigned long)(p), (a)))
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#define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0)
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#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
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#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
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#define DIV_ROUND_CLOSEST(x, divisor)( \
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{ \
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typeof(divisor) __divisor = divisor; \
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(((x) + ((__divisor) / 2)) / (__divisor)); \
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} \
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)
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/**
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* upper_32_bits - return bits 32-63 of a number
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* @n: the number we're accessing
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*
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* A basic shift-right of a 64- or 32-bit quantity. Use this to suppress
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* the "right shift count >= width of type" warning when that quantity is
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* 32-bits.
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*/
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#define upper_32_bits(n) ((u32)(((n) >> 16) >> 16))
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/**
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* lower_32_bits - return bits 0-31 of a number
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* @n: the number we're accessing
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*/
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#define lower_32_bits(n) ((u32)(n))
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#define KERN_EMERG "<0>" /* system is unusable */
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#define KERN_ALERT "<1>" /* action must be taken immediately */
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#define KERN_CRIT "<2>" /* critical conditions */
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#define KERN_ERR "<3>" /* error conditions */
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#define KERN_WARNING "<4>" /* warning conditions */
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#define KERN_NOTICE "<5>" /* normal but significant condition */
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#define KERN_INFO "<6>" /* informational */
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#define KERN_DEBUG "<7>" /* debug-level messages */
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extern const char hex_asc[];
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#define hex_asc_lo(x) hex_asc[((x) & 0x0f)]
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#define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4]
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static inline char *pack_hex_byte(char *buf, u8 byte)
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{
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*buf++ = hex_asc_hi(byte);
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*buf++ = hex_asc_lo(byte);
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return buf;
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}
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extern int hex_to_bin(char ch);
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extern void hex2bin(u8 *dst, const char *src, size_t count);
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//int printk(const char *fmt, ...);
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#define printk(fmt, arg...) dbgprintf(fmt , ##arg)
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/*
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* min()/max()/clamp() macros that also do
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* strict type-checking.. See the
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* "unnecessary" pointer comparison.
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*/
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#define min(x, y) ({ \
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typeof(x) _min1 = (x); \
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typeof(y) _min2 = (y); \
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(void) (&_min1 == &_min2); \
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_min1 < _min2 ? _min1 : _min2; })
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#define max(x, y) ({ \
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typeof(x) _max1 = (x); \
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typeof(y) _max2 = (y); \
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(void) (&_max1 == &_max2); \
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_max1 > _max2 ? _max1 : _max2; })
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#define min3(x, y, z) ({ \
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typeof(x) _min1 = (x); \
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typeof(y) _min2 = (y); \
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typeof(z) _min3 = (z); \
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(void) (&_min1 == &_min2); \
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(void) (&_min1 == &_min3); \
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_min1 < _min2 ? (_min1 < _min3 ? _min1 : _min3) : \
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(_min2 < _min3 ? _min2 : _min3); })
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#define max3(x, y, z) ({ \
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typeof(x) _max1 = (x); \
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typeof(y) _max2 = (y); \
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typeof(z) _max3 = (z); \
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(void) (&_max1 == &_max2); \
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(void) (&_max1 == &_max3); \
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_max1 > _max2 ? (_max1 > _max3 ? _max1 : _max3) : \
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(_max2 > _max3 ? _max2 : _max3); })
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/**
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* min_not_zero - return the minimum that is _not_ zero, unless both are zero
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* @x: value1
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* @y: value2
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*/
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#define min_not_zero(x, y) ({ \
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typeof(x) __x = (x); \
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typeof(y) __y = (y); \
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__x == 0 ? __y : ((__y == 0) ? __x : min(__x, __y)); })
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/**
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* clamp - return a value clamped to a given range with strict typechecking
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* @val: current value
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* @min: minimum allowable value
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* @max: maximum allowable value
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*
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* This macro does strict typechecking of min/max to make sure they are of the
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* same type as val. See the unnecessary pointer comparisons.
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*/
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#define clamp(val, min, max) ({ \
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typeof(val) __val = (val); \
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typeof(min) __min = (min); \
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typeof(max) __max = (max); \
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(void) (&__val == &__min); \
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(void) (&__val == &__max); \
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__val = __val < __min ? __min: __val; \
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__val > __max ? __max: __val; })
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/*
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* ..and if you can't take the strict
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* types, you can specify one yourself.
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*
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* Or not use min/max/clamp at all, of course.
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*/
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#define min_t(type, x, y) ({ \
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type __min1 = (x); \
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type __min2 = (y); \
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__min1 < __min2 ? __min1: __min2; })
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#define max_t(type, x, y) ({ \
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type __max1 = (x); \
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type __max2 = (y); \
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__max1 > __max2 ? __max1: __max2; })
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/**
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* container_of - cast a member of a structure out to the containing structure
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* @ptr: the pointer to the member.
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* @type: the type of the container struct this is embedded in.
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* @member: the name of the member within the struct.
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*
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*/
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#define container_of(ptr, type, member) ({ \
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const typeof( ((type *)0)->member ) *__mptr = (ptr); \
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(type *)( (char *)__mptr - offsetof(type,member) );})
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static inline void *kcalloc(size_t n, size_t size, uint32_t flags)
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{
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if (n != 0 && size > ULONG_MAX / n)
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return NULL;
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return kzalloc(n * size, 0);
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}
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void free (void *ptr);
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#endif /* __KERNEL__ */
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typedef unsigned long pgprotval_t;
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typedef struct pgprot { pgprotval_t pgprot; } pgprot_t;
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struct file {};
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struct vm_area_struct {};
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struct address_space {};
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struct device
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{
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struct device *parent;
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void *driver_data;
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};
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static inline void dev_set_drvdata(struct device *dev, void *data)
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{
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dev->driver_data = data;
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}
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static inline void *dev_get_drvdata(struct device *dev)
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{
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return dev->driver_data;
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}
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#define preempt_disable() do { } while (0)
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#define preempt_enable_no_resched() do { } while (0)
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#define preempt_enable() do { } while (0)
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#define preempt_check_resched() do { } while (0)
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#define preempt_disable_notrace() do { } while (0)
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#define preempt_enable_no_resched_notrace() do { } while (0)
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#define preempt_enable_notrace() do { } while (0)
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#define in_dbg_master() (0)
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#define HZ 100
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#define time_after(a,b) \
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(typecheck(unsigned long, a) && \
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typecheck(unsigned long, b) && \
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((long)(b) - (long)(a) < 0))
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struct tvec_base;
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struct timer_list {
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struct list_head entry;
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unsigned long expires;
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void (*function)(unsigned long);
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unsigned long data;
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// struct tvec_base *base;
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};
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struct timespec {
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long tv_sec; /* seconds */
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long tv_nsec; /* nanoseconds */
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};
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#define build_mmio_read(name, size, type, reg, barrier) \
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static inline type name(const volatile void __iomem *addr) \
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{ type ret; asm volatile("mov" size " %1,%0":reg (ret) \
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:"m" (*(volatile type __force *)addr) barrier); return ret; }
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#define build_mmio_write(name, size, type, reg, barrier) \
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static inline void name(type val, volatile void __iomem *addr) \
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{ asm volatile("mov" size " %0,%1": :reg (val), \
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"m" (*(volatile type __force *)addr) barrier); }
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build_mmio_read(readb, "b", unsigned char, "=q", :"memory")
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build_mmio_read(readw, "w", unsigned short, "=r", :"memory")
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build_mmio_read(readl, "l", unsigned int, "=r", :"memory")
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build_mmio_read(__readb, "b", unsigned char, "=q", )
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build_mmio_read(__readw, "w", unsigned short, "=r", )
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build_mmio_read(__readl, "l", unsigned int, "=r", )
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build_mmio_write(writeb, "b", unsigned char, "q", :"memory")
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build_mmio_write(writew, "w", unsigned short, "r", :"memory")
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build_mmio_write(writel, "l", unsigned int, "r", :"memory")
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build_mmio_write(__writeb, "b", unsigned char, "q", )
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build_mmio_write(__writew, "w", unsigned short, "r", )
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build_mmio_write(__writel, "l", unsigned int, "r", )
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#define readb_relaxed(a) __readb(a)
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#define readw_relaxed(a) __readw(a)
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#define readl_relaxed(a) __readl(a)
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#define __raw_readb __readb
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#define __raw_readw __readw
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#define __raw_readl __readl
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#define __raw_writeb __writeb
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#define __raw_writew __writew
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#define __raw_writel __writel
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static inline __u64 readq(const volatile void __iomem *addr)
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{
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const volatile u32 __iomem *p = addr;
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u32 low, high;
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low = readl(p);
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high = readl(p + 1);
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return low + ((u64)high << 32);
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}
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static inline void writeq(__u64 val, volatile void __iomem *addr)
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{
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writel(val, addr);
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writel(val >> 32, addr+4);
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}
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#define swap(a, b) \
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do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
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#define mmiowb() barrier()
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#define dev_err(dev, format, arg...) \
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printk("Error %s " format, __func__ , ## arg)
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#define dev_warn(dev, format, arg...) \
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printk("Warning %s " format, __func__ , ## arg)
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#define dev_info(dev, format, arg...) \
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printk("Info %s " format , __func__, ## arg)
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#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
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struct scatterlist {
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unsigned long page_link;
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unsigned int offset;
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unsigned int length;
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dma_addr_t dma_address;
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unsigned int dma_length;
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};
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struct sg_table {
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struct scatterlist *sgl; /* the list */
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unsigned int nents; /* number of mapped entries */
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unsigned int orig_nents; /* original size of list */
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};
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#define SG_MAX_SINGLE_ALLOC (4096 / sizeof(struct scatterlist))
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struct scatterlist *sg_next(struct scatterlist *sg);
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#define sg_dma_address(sg) ((sg)->dma_address)
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#define sg_dma_len(sg) ((sg)->length)
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#define sg_is_chain(sg) ((sg)->page_link & 0x01)
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#define sg_is_last(sg) ((sg)->page_link & 0x02)
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#define sg_chain_ptr(sg) \
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((struct scatterlist *) ((sg)->page_link & ~0x03))
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static inline addr_t sg_page(struct scatterlist *sg)
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{
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return (addr_t)((sg)->page_link & ~0x3);
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}
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#define for_each_sg(sglist, sg, nr, __i) \
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for (__i = 0, sg = (sglist); __i < (nr); __i++, sg = sg_next(sg))
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struct page
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{
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unsigned int addr;
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};
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struct vm_fault {
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unsigned int flags; /* FAULT_FLAG_xxx flags */
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pgoff_t pgoff; /* Logical page offset based on vma */
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void __user *virtual_address; /* Faulting virtual address */
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struct page *page; /* ->fault handlers should return a
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* page here, unless VM_FAULT_NOPAGE
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* is set (which is also implied by
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* VM_FAULT_ERROR).
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*/
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};
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struct pagelist {
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dma_addr_t *page;
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unsigned int nents;
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};
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#endif
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