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| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/if_tun/@/sys/systm.h |
/*-
* Copyright (c) 1982, 1988, 1991, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)systm.h 8.7 (Berkeley) 3/29/95
* $FreeBSD: release/9.1.0/sys/sys/systm.h 235539 2012-05-17 10:25:34Z dim $
*/
#ifndef _SYS_SYSTM_H_
#define _SYS_SYSTM_H_
#include <machine/atomic.h>
#include <machine/cpufunc.h>
#include <sys/callout.h>
#include <sys/cdefs.h>
#include <sys/queue.h>
#include <sys/stdint.h> /* for people using printf mainly */
extern int cold; /* nonzero if we are doing a cold boot */
extern int rebooting; /* kern_reboot() has been called. */
extern const char *panicstr; /* panic message */
extern char version[]; /* system version */
extern char copyright[]; /* system copyright */
extern int kstack_pages; /* number of kernel stack pages */
extern u_long pagesizes[]; /* supported page sizes */
extern long physmem; /* physical memory */
extern long realmem; /* 'real' memory */
extern char *rootdevnames[2]; /* names of possible root devices */
extern int boothowto; /* reboot flags, from console subsystem */
extern int bootverbose; /* nonzero to print verbose messages */
extern int maxusers; /* system tune hint */
extern int ngroups_max; /* max # of supplemental groups */
extern int vm_guest; /* Running as virtual machine guest? */
/*
* Detected virtual machine guest types. The intention is to expand
* and/or add to the VM_GUEST_VM type if specific VM functionality is
* ever implemented (e.g. vendor-specific paravirtualization features).
*/
enum VM_GUEST { VM_GUEST_NO = 0, VM_GUEST_VM, VM_GUEST_XEN };
#ifdef INVARIANTS /* The option is always available */
#define KASSERT(exp,msg) do { \
if (__predict_false(!(exp))) \
panic msg; \
} while (0)
#define VNASSERT(exp, vp, msg) do { \
if (__predict_false(!(exp))) { \
vn_printf(vp, "VNASSERT failed\n"); \
panic msg; \
} \
} while (0)
#else
#define KASSERT(exp,msg) do { \
} while (0)
#define VNASSERT(exp, vp, msg) do { \
} while (0)
#endif
#ifndef CTASSERT /* Allow lint to override */
#define CTASSERT(x) _CTASSERT(x, __LINE__)
#define _CTASSERT(x, y) __CTASSERT(x, y)
#define __CTASSERT(x, y) typedef char __assert ## y[(x) ? 1 : -1]
#endif
/*
* Assert that a pointer can be loaded from memory atomically.
*
* This assertion enforces stronger alignment than necessary. For example,
* on some architectures, atomicity for unaligned loads will depend on
* whether or not the load spans multiple cache lines.
*/
#define ASSERT_ATOMIC_LOAD_PTR(var, msg) \
KASSERT(sizeof(var) == sizeof(void *) && \
((uintptr_t)&(var) & (sizeof(void *) - 1)) == 0, msg)
/*
* If we have already panic'd and this is the thread that called
* panic(), then don't block on any mutexes but silently succeed.
* Otherwise, the kernel will deadlock since the scheduler isn't
* going to run the thread that holds any lock we need.
*/
#define SCHEDULER_STOPPED() __predict_false(curthread->td_stopsched)
/*
* XXX the hints declarations are even more misplaced than most declarations
* in this file, since they are needed in one file (per arch) and only used
* in two files.
* XXX most of these variables should be const.
*/
extern int osreldate;
extern int envmode;
extern int hintmode; /* 0 = off. 1 = config, 2 = fallback */
extern int dynamic_kenv;
extern struct mtx kenv_lock;
extern char *kern_envp;
extern char static_env[];
extern char static_hints[]; /* by config for now */
extern char **kenvp;
extern const void *zero_region; /* address space maps to a zeroed page */
extern int iosize_max_clamp;
#define IOSIZE_MAX (iosize_max_clamp ? INT_MAX : SSIZE_MAX)
/*
* General function declarations.
*/
struct inpcb;
struct lock_object;
struct malloc_type;
struct mtx;
struct proc;
struct socket;
struct thread;
struct tty;
struct ucred;
struct uio;
struct _jmp_buf;
struct trapframe;
int setjmp(struct _jmp_buf *) __returns_twice;
void longjmp(struct _jmp_buf *, int) __dead2;
int dumpstatus(vm_offset_t addr, off_t count);
int nullop(void);
int eopnotsupp(void);
int ureadc(int, struct uio *);
void hashdestroy(void *, struct malloc_type *, u_long);
void *hashinit(int count, struct malloc_type *type, u_long *hashmask);
void *hashinit_flags(int count, struct malloc_type *type,
u_long *hashmask, int flags);
#define HASH_NOWAIT 0x00000001
#define HASH_WAITOK 0x00000002
void *phashinit(int count, struct malloc_type *type, u_long *nentries);
void g_waitidle(void);
void panic(const char *, ...) __dead2 __printflike(1, 2);
void cpu_boot(int);
void cpu_flush_dcache(void *, size_t);
void cpu_rootconf(void);
void critical_enter(void);
void critical_exit(void);
void init_param1(void);
void init_param2(long physpages);
void init_static_kenv(char *, size_t);
void tablefull(const char *);
int kvprintf(char const *, void (*)(int, void*), void *, int,
__va_list) __printflike(1, 0);
void log(int, const char *, ...) __printflike(2, 3);
void log_console(struct uio *);
int printf(const char *, ...) __printflike(1, 2);
int snprintf(char *, size_t, const char *, ...) __printflike(3, 4);
int sprintf(char *buf, const char *, ...) __printflike(2, 3);
int uprintf(const char *, ...) __printflike(1, 2);
int vprintf(const char *, __va_list) __printflike(1, 0);
int vsnprintf(char *, size_t, const char *, __va_list) __printflike(3, 0);
int vsnrprintf(char *, size_t, int, const char *, __va_list) __printflike(4, 0);
int vsprintf(char *buf, const char *, __va_list) __printflike(2, 0);
int ttyprintf(struct tty *, const char *, ...) __printflike(2, 3);
int sscanf(const char *, char const *, ...) __nonnull(1) __nonnull(2);
int vsscanf(const char *, char const *, __va_list) __nonnull(1) __nonnull(2);
long strtol(const char *, char **, int) __nonnull(1);
u_long strtoul(const char *, char **, int) __nonnull(1);
quad_t strtoq(const char *, char **, int) __nonnull(1);
u_quad_t strtouq(const char *, char **, int) __nonnull(1);
void tprintf(struct proc *p, int pri, const char *, ...) __printflike(3, 4);
void hexdump(const void *ptr, int length, const char *hdr, int flags);
#define HD_COLUMN_MASK 0xff
#define HD_DELIM_MASK 0xff00
#define HD_OMIT_COUNT (1 << 16)
#define HD_OMIT_HEX (1 << 17)
#define HD_OMIT_CHARS (1 << 18)
#define ovbcopy(f, t, l) bcopy((f), (t), (l))
void bcopy(const void *from, void *to, size_t len) __nonnull(1) __nonnull(2);
void bzero(void *buf, size_t len) __nonnull(1);
void *memcpy(void *to, const void *from, size_t len) __nonnull(1) __nonnull(2);
void *memmove(void *dest, const void *src, size_t n) __nonnull(1) __nonnull(2);
int copystr(const void * __restrict kfaddr, void * __restrict kdaddr,
size_t len, size_t * __restrict lencopied)
__nonnull(1) __nonnull(2);
int copyinstr(const void * __restrict udaddr, void * __restrict kaddr,
size_t len, size_t * __restrict lencopied)
__nonnull(1) __nonnull(2);
int copyin(const void * __restrict udaddr, void * __restrict kaddr,
size_t len) __nonnull(1) __nonnull(2);
int copyin_nofault(const void * __restrict udaddr, void * __restrict kaddr,
size_t len) __nonnull(1) __nonnull(2);
int copyout(const void * __restrict kaddr, void * __restrict udaddr,
size_t len) __nonnull(1) __nonnull(2);
int copyout_nofault(const void * __restrict kaddr, void * __restrict udaddr,
size_t len) __nonnull(1) __nonnull(2);
int fubyte(const void *base);
long fuword(const void *base);
int fuword16(void *base);
int32_t fuword32(const void *base);
int64_t fuword64(const void *base);
int subyte(void *base, int byte);
int suword(void *base, long word);
int suword16(void *base, int word);
int suword32(void *base, int32_t word);
int suword64(void *base, int64_t word);
uint32_t casuword32(volatile uint32_t *base, uint32_t oldval, uint32_t newval);
u_long casuword(volatile u_long *p, u_long oldval, u_long newval);
void realitexpire(void *);
int sysbeep(int hertz, int period);
void hardclock(int usermode, uintfptr_t pc);
void hardclock_cnt(int cnt, int usermode);
void hardclock_cpu(int usermode);
void hardclock_sync(int cpu);
void softclock(void *);
void statclock(int usermode);
void statclock_cnt(int cnt, int usermode);
void profclock(int usermode, uintfptr_t pc);
void profclock_cnt(int cnt, int usermode, uintfptr_t pc);
int hardclockintr(void);
void startprofclock(struct proc *);
void stopprofclock(struct proc *);
void cpu_startprofclock(void);
void cpu_stopprofclock(void);
void cpu_idleclock(void);
void cpu_activeclock(void);
extern int cpu_can_deep_sleep;
extern int cpu_disable_deep_sleep;
int cr_cansee(struct ucred *u1, struct ucred *u2);
int cr_canseesocket(struct ucred *cred, struct socket *so);
int cr_canseeinpcb(struct ucred *cred, struct inpcb *inp);
char *getenv(const char *name);
void freeenv(char *env);
int getenv_int(const char *name, int *data);
int getenv_uint(const char *name, unsigned int *data);
int getenv_long(const char *name, long *data);
int getenv_ulong(const char *name, unsigned long *data);
int getenv_string(const char *name, char *data, int size);
int getenv_quad(const char *name, quad_t *data);
int setenv(const char *name, const char *value);
int unsetenv(const char *name);
int testenv(const char *name);
typedef uint64_t (cpu_tick_f)(void);
void set_cputicker(cpu_tick_f *func, uint64_t freq, unsigned var);
extern cpu_tick_f *cpu_ticks;
uint64_t cpu_tickrate(void);
uint64_t cputick2usec(uint64_t tick);
#ifdef APM_FIXUP_CALLTODO
struct timeval;
void adjust_timeout_calltodo(struct timeval *time_change);
#endif /* APM_FIXUP_CALLTODO */
#include <sys/libkern.h>
/* Initialize the world */
void consinit(void);
void cpu_initclocks(void);
void cpu_initclocks_bsp(void);
void cpu_initclocks_ap(void);
void usrinfoinit(void);
/* Finalize the world */
void kern_reboot(int) __dead2;
void shutdown_nice(int);
/* Timeouts */
typedef void timeout_t(void *); /* timeout function type */
#define CALLOUT_HANDLE_INITIALIZER(handle) \
{ NULL }
void callout_handle_init(struct callout_handle *);
struct callout_handle timeout(timeout_t *, void *, int);
void untimeout(timeout_t *, void *, struct callout_handle);
caddr_t kern_timeout_callwheel_alloc(caddr_t v);
void kern_timeout_callwheel_init(void);
/* Stubs for obsolete functions that used to be for interrupt management */
static __inline void spl0(void) { return; }
static __inline intrmask_t splbio(void) { return 0; }
static __inline intrmask_t splcam(void) { return 0; }
static __inline intrmask_t splclock(void) { return 0; }
static __inline intrmask_t splhigh(void) { return 0; }
static __inline intrmask_t splimp(void) { return 0; }
static __inline intrmask_t splnet(void) { return 0; }
static __inline intrmask_t splsoftcam(void) { return 0; }
static __inline intrmask_t splsoftclock(void) { return 0; }
static __inline intrmask_t splsofttty(void) { return 0; }
static __inline intrmask_t splsoftvm(void) { return 0; }
static __inline intrmask_t splsofttq(void) { return 0; }
static __inline intrmask_t splstatclock(void) { return 0; }
static __inline intrmask_t spltty(void) { return 0; }
static __inline intrmask_t splvm(void) { return 0; }
static __inline void splx(intrmask_t ipl __unused) { return; }
/*
* Common `proc' functions are declared here so that proc.h can be included
* less often.
*/
int _sleep(void *chan, struct lock_object *lock, int pri, const char *wmesg,
int timo) __nonnull(1);
#define msleep(chan, mtx, pri, wmesg, timo) \
_sleep((chan), &(mtx)->lock_object, (pri), (wmesg), (timo))
int msleep_spin(void *chan, struct mtx *mtx, const char *wmesg, int timo)
__nonnull(1);
int pause(const char *wmesg, int timo);
#define tsleep(chan, pri, wmesg, timo) \
_sleep((chan), NULL, (pri), (wmesg), (timo))
void wakeup(void *chan) __nonnull(1);
void wakeup_one(void *chan) __nonnull(1);
/*
* Common `struct cdev *' stuff are declared here to avoid #include poisoning
*/
struct cdev;
dev_t dev2udev(struct cdev *x);
const char *devtoname(struct cdev *cdev);
int poll_no_poll(int events);
/* XXX: Should be void nanodelay(u_int nsec); */
void DELAY(int usec);
/* Root mount holdback API */
struct root_hold_token;
struct root_hold_token *root_mount_hold(const char *identifier);
void root_mount_rel(struct root_hold_token *h);
void root_mount_wait(void);
int root_mounted(void);
/*
* Unit number allocation API. (kern/subr_unit.c)
*/
struct unrhdr;
struct unrhdr *new_unrhdr(int low, int high, struct mtx *mutex);
void delete_unrhdr(struct unrhdr *uh);
void clean_unrhdr(struct unrhdr *uh);
void clean_unrhdrl(struct unrhdr *uh);
int alloc_unr(struct unrhdr *uh);
int alloc_unr_specific(struct unrhdr *uh, u_int item);
int alloc_unrl(struct unrhdr *uh);
void free_unr(struct unrhdr *uh, u_int item);
/*
* Population count algorithm using SWAR approach
* - "SIMD Within A Register".
*/
static __inline uint32_t
bitcount32(uint32_t x)
{
x = (x & 0x55555555) + ((x & 0xaaaaaaaa) >> 1);
x = (x & 0x33333333) + ((x & 0xcccccccc) >> 2);
x = (x + (x >> 4)) & 0x0f0f0f0f;
x = (x + (x >> 8));
x = (x + (x >> 16)) & 0x000000ff;
return (x);
}
static __inline uint16_t
bitcount16(uint32_t x)
{
x = (x & 0x5555) + ((x & 0xaaaa) >> 1);
x = (x & 0x3333) + ((x & 0xcccc) >> 2);
x = (x + (x >> 4)) & 0x0f0f;
x = (x + (x >> 8)) & 0x00ff;
return (x);
}
#endif /* !_SYS_SYSTM_H_ */