Index: head/sys/dev/speaker/spkr.c =================================================================== --- head/sys/dev/speaker/spkr.c (revision 364919) +++ head/sys/dev/speaker/spkr.c (revision 364920) @@ -1,551 +1,545 @@ /*- * spkr.c -- device driver for console speaker * * v1.4 by Eric S. Raymond (esr@snark.thyrsus.com) Aug 1993 * modified for FreeBSD by Andrew A. Chernov * modified for PC98 by Kakefuda */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include static d_open_t spkropen; static d_close_t spkrclose; static d_write_t spkrwrite; static d_ioctl_t spkrioctl; static struct cdevsw spkr_cdevsw = { .d_version = D_VERSION, .d_flags = D_NEEDGIANT, .d_open = spkropen, .d_close = spkrclose, .d_write = spkrwrite, .d_ioctl = spkrioctl, .d_name = "spkr", }; static MALLOC_DEFINE(M_SPKR, "spkr", "Speaker buffer"); /* **************** MACHINE DEPENDENT PART STARTS HERE ************************* * This section defines a function tone() which causes a tone of given * frequency and duration from the ISA console speaker. * Another function endtone() is defined to force sound off, and there is * also a rest() entry point to do pauses. * * Audible sound is generated using the Programmable Interval Timer (PIT) and * Programmable Peripheral Interface (PPI) attached to the ISA speaker. The * PPI controls whether sound is passed through at all; the PIT's channel 2 is * used to generate clicks (a square wave) of whatever frequency is desired. */ #define SPKRPRI PSOCK static char endtone, endrest; static void tone(unsigned int thz, unsigned int centisecs); static void rest(int centisecs); static void playinit(void); static void playtone(int pitch, int value, int sustain); static void playstring(char *cp, size_t slen); /* * Emit tone of frequency thz for given number of centisecs */ static void tone(unsigned int thz, unsigned int centisecs) { - int sps, timo; + int timo; if (thz <= 0) return; #ifdef DEBUG (void) printf("tone: thz=%d centisecs=%d\n", thz, centisecs); #endif /* DEBUG */ /* set timer to generate clicks at given frequency in Hertz */ - sps = splclock(); - if (timer_spkr_acquire()) { /* enter list of waiting procs ??? */ - splx(sps); return; } - splx(sps); disable_intr(); timer_spkr_setfreq(thz); enable_intr(); /* * Set timeout to endtone function, then give up the timeslice. * This is so other processes can execute while the tone is being * emitted. */ timo = centisecs * hz / 100; if (timo > 0) tsleep(&endtone, SPKRPRI | PCATCH, "spkrtn", timo); - sps = splclock(); timer_spkr_release(); - splx(sps); } /* * Rest for given number of centisecs */ static void rest(int centisecs) { int timo; /* * Set timeout to endrest function, then give up the timeslice. * This is so other processes can execute while the rest is being * waited out. */ #ifdef DEBUG (void) printf("rest: %d\n", centisecs); #endif /* DEBUG */ timo = centisecs * hz / 100; if (timo > 0) tsleep(&endrest, SPKRPRI | PCATCH, "spkrrs", timo); } /* **************** PLAY STRING INTERPRETER BEGINS HERE ********************** * Play string interpretation is modelled on IBM BASIC 2.0's PLAY statement; * M[LNS] are missing; the ~ synonym and the _ slur mark and the octave- * tracking facility are added. * Requires tone(), rest(), and endtone(). String play is not interruptible * except possibly at physical block boundaries. */ #ifndef __bool_true_false_are_defined typedef int bool; #endif #define TRUE 1 #define FALSE 0 #define dtoi(c) ((c) - '0') static int octave; /* currently selected octave */ static int whole; /* whole-note time at current tempo, in ticks */ static int value; /* whole divisor for note time, quarter note = 1 */ static int fill; /* controls spacing of notes */ static bool octtrack; /* octave-tracking on? */ static bool octprefix; /* override current octave-tracking state? */ /* * Magic number avoidance... */ #define SECS_PER_MIN 60 /* seconds per minute */ #define WHOLE_NOTE 4 /* quarter notes per whole note */ #define MIN_VALUE 64 /* the most we can divide a note by */ #define DFLT_VALUE 4 /* default value (quarter-note) */ #define FILLTIME 8 /* for articulation, break note in parts */ #define STACCATO 6 /* 6/8 = 3/4 of note is filled */ #define NORMAL 7 /* 7/8ths of note interval is filled */ #define LEGATO 8 /* all of note interval is filled */ #define DFLT_OCTAVE 4 /* default octave */ #define MIN_TEMPO 32 /* minimum tempo */ #define DFLT_TEMPO 120 /* default tempo */ #define MAX_TEMPO 255 /* max tempo */ #define NUM_MULT 3 /* numerator of dot multiplier */ #define DENOM_MULT 2 /* denominator of dot multiplier */ /* letter to half-tone: A B C D E F G */ static int notetab[8] = {9, 11, 0, 2, 4, 5, 7}; /* * This is the American Standard A440 Equal-Tempered scale with frequencies * rounded to nearest integer. Thank Goddess for the good ol' CRC Handbook... * our octave 0 is standard octave 2. */ #define OCTAVE_NOTES 12 /* semitones per octave */ static int pitchtab[] = { /* C C# D D# E F F# G G# A A# B*/ /* 0 */ 65, 69, 73, 78, 82, 87, 93, 98, 103, 110, 117, 123, /* 1 */ 131, 139, 147, 156, 165, 175, 185, 196, 208, 220, 233, 247, /* 2 */ 262, 277, 294, 311, 330, 349, 370, 392, 415, 440, 466, 494, /* 3 */ 523, 554, 587, 622, 659, 698, 740, 784, 831, 880, 932, 988, /* 4 */ 1047, 1109, 1175, 1245, 1319, 1397, 1480, 1568, 1661, 1760, 1865, 1975, /* 5 */ 2093, 2217, 2349, 2489, 2637, 2794, 2960, 3136, 3322, 3520, 3729, 3951, /* 6 */ 4186, 4435, 4698, 4978, 5274, 5588, 5920, 6272, 6644, 7040, 7459, 7902, }; static void playinit() { octave = DFLT_OCTAVE; whole = (100 * SECS_PER_MIN * WHOLE_NOTE) / DFLT_TEMPO; fill = NORMAL; value = DFLT_VALUE; octtrack = FALSE; octprefix = TRUE; /* act as though there was an initial O(n) */ } /* * Play tone of proper duration for current rhythm signature */ static void playtone(int pitch, int value, int sustain) { int sound, silence, snum = 1, sdenom = 1; /* this weirdness avoids floating-point arithmetic */ for (; sustain; sustain--) { /* See the BUGS section in the man page for discussion */ snum *= NUM_MULT; sdenom *= DENOM_MULT; } if (value == 0 || sdenom == 0) return; if (pitch == -1) rest(whole * snum / (value * sdenom)); else { sound = (whole * snum) / (value * sdenom) - (whole * (FILLTIME - fill)) / (value * FILLTIME); silence = whole * (FILLTIME-fill) * snum / (FILLTIME * value * sdenom); #ifdef DEBUG (void) printf("playtone: pitch %d for %d ticks, rest for %d ticks\n", pitch, sound, silence); #endif /* DEBUG */ tone(pitchtab[pitch], sound); if (fill != LEGATO) rest(silence); } } /* * Interpret and play an item from a notation string */ static void playstring(char *cp, size_t slen) { int pitch, oldfill, lastpitch = OCTAVE_NOTES * DFLT_OCTAVE; #define GETNUM(cp, v) for(v=0; isdigit(cp[1]) && slen > 0; ) \ {v = v * 10 + (*++cp - '0'); slen--;} for (; slen--; cp++) { int sustain, timeval, tempo; char c = toupper(*cp); #ifdef DEBUG (void) printf("playstring: %c (%x)\n", c, c); #endif /* DEBUG */ switch (c) { case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': case 'G': /* compute pitch */ pitch = notetab[c - 'A'] + octave * OCTAVE_NOTES; /* this may be followed by an accidental sign */ if (cp[1] == '#' || cp[1] == '+') { ++pitch; ++cp; slen--; } else if (cp[1] == '-') { --pitch; ++cp; slen--; } /* * If octave-tracking mode is on, and there has been no octave- * setting prefix, find the version of the current letter note * closest to the last regardless of octave. */ if (octtrack && !octprefix) { if (abs(pitch-lastpitch) > abs(pitch+OCTAVE_NOTES - lastpitch)) { ++octave; pitch += OCTAVE_NOTES; } if (abs(pitch-lastpitch) > abs((pitch-OCTAVE_NOTES) - lastpitch)) { --octave; pitch -= OCTAVE_NOTES; } } octprefix = FALSE; lastpitch = pitch; /* ...which may in turn be followed by an override time value */ GETNUM(cp, timeval); if (timeval <= 0 || timeval > MIN_VALUE) timeval = value; /* ...and/or sustain dots */ for (sustain = 0; cp[1] == '.'; cp++) { slen--; sustain++; } /* ...and/or a slur mark */ oldfill = fill; if (cp[1] == '_') { fill = LEGATO; ++cp; slen--; } /* time to emit the actual tone */ playtone(pitch, timeval, sustain); fill = oldfill; break; case 'O': if (cp[1] == 'N' || cp[1] == 'n') { octprefix = octtrack = FALSE; ++cp; slen--; } else if (cp[1] == 'L' || cp[1] == 'l') { octtrack = TRUE; ++cp; slen--; } else { GETNUM(cp, octave); if (octave >= nitems(pitchtab) / OCTAVE_NOTES) octave = DFLT_OCTAVE; octprefix = TRUE; } break; case '>': if (octave < nitems(pitchtab) / OCTAVE_NOTES - 1) octave++; octprefix = TRUE; break; case '<': if (octave > 0) octave--; octprefix = TRUE; break; case 'N': GETNUM(cp, pitch); for (sustain = 0; cp[1] == '.'; cp++) { slen--; sustain++; } oldfill = fill; if (cp[1] == '_') { fill = LEGATO; ++cp; slen--; } playtone(pitch - 1, value, sustain); fill = oldfill; break; case 'L': GETNUM(cp, value); if (value <= 0 || value > MIN_VALUE) value = DFLT_VALUE; break; case 'P': case '~': /* this may be followed by an override time value */ GETNUM(cp, timeval); if (timeval <= 0 || timeval > MIN_VALUE) timeval = value; for (sustain = 0; cp[1] == '.'; cp++) { slen--; sustain++; } playtone(-1, timeval, sustain); break; case 'T': GETNUM(cp, tempo); if (tempo < MIN_TEMPO || tempo > MAX_TEMPO) tempo = DFLT_TEMPO; whole = (100 * SECS_PER_MIN * WHOLE_NOTE) / tempo; break; case 'M': if (cp[1] == 'N' || cp[1] == 'n') { fill = NORMAL; ++cp; slen--; } else if (cp[1] == 'L' || cp[1] == 'l') { fill = LEGATO; ++cp; slen--; } else if (cp[1] == 'S' || cp[1] == 's') { fill = STACCATO; ++cp; slen--; } break; } } } /* * ****************** UNIX DRIVER HOOKS BEGIN HERE ************************** * This section implements driver hooks to run playstring() and the tone(), * endtone(), and rest() functions defined above. */ static int spkr_active = FALSE; /* exclusion flag */ static char *spkr_inbuf; /* incoming buf */ static int spkropen(dev, flags, fmt, td) struct cdev *dev; int flags; int fmt; struct thread *td; { #ifdef DEBUG (void) printf("spkropen: entering with dev = %s\n", devtoname(dev)); #endif /* DEBUG */ if (spkr_active) return(EBUSY); else { #ifdef DEBUG (void) printf("spkropen: about to perform play initialization\n"); #endif /* DEBUG */ playinit(); spkr_inbuf = malloc(DEV_BSIZE, M_SPKR, M_WAITOK); spkr_active = TRUE; return(0); } } static int spkrwrite(dev, uio, ioflag) struct cdev *dev; struct uio *uio; int ioflag; { #ifdef DEBUG printf("spkrwrite: entering with dev = %s, count = %zd\n", devtoname(dev), uio->uio_resid); #endif /* DEBUG */ if (uio->uio_resid > (DEV_BSIZE - 1)) /* prevent system crashes */ return(E2BIG); else { unsigned n; char *cp; int error; n = uio->uio_resid; cp = spkr_inbuf; error = uiomove(cp, n, uio); if (!error) { cp[n] = '\0'; playstring(cp, n); } return(error); } } static int spkrclose(dev, flags, fmt, td) struct cdev *dev; int flags; int fmt; struct thread *td; { #ifdef DEBUG (void) printf("spkrclose: entering with dev = %s\n", devtoname(dev)); #endif /* DEBUG */ wakeup(&endtone); wakeup(&endrest); free(spkr_inbuf, M_SPKR); spkr_active = FALSE; return(0); } static int spkrioctl(dev, cmd, cmdarg, flags, td) struct cdev *dev; unsigned long cmd; caddr_t cmdarg; int flags; struct thread *td; { #ifdef DEBUG (void) printf("spkrioctl: entering with dev = %s, cmd = %lx\n", devtoname(dev), cmd); #endif /* DEBUG */ if (cmd == SPKRTONE) { tone_t *tp = (tone_t *)cmdarg; if (tp->frequency == 0) rest(tp->duration); else tone(tp->frequency, tp->duration); return 0; } else if (cmd == SPKRTUNE) { tone_t *tp = (tone_t *)(*(caddr_t *)cmdarg); tone_t ttp; int error; for (; ; tp++) { error = copyin(tp, &ttp, sizeof(tone_t)); if (error) return(error); if (ttp.duration == 0) break; if (ttp.frequency == 0) rest(ttp.duration); else tone(ttp.frequency, ttp.duration); } return(0); } return(EINVAL); } static struct cdev *speaker_dev; /* * Module handling */ static int speaker_modevent(module_t mod, int type, void *data) { int error = 0; switch(type) { case MOD_LOAD: speaker_dev = make_dev(&spkr_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, "speaker"); break; case MOD_SHUTDOWN: case MOD_UNLOAD: destroy_dev(speaker_dev); break; default: error = EOPNOTSUPP; } return (error); } DEV_MODULE(speaker, speaker_modevent, NULL); Index: head/sys/sys/systm.h =================================================================== --- head/sys/sys/systm.h (revision 364919) +++ head/sys/sys/systm.h (revision 364920) @@ -1,633 +1,632 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * 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. * 3. 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 * $FreeBSD$ */ #ifndef _SYS_SYSTM_H_ #define _SYS_SYSTM_H_ #include #include #include #include #include #include /* for people using printf mainly */ __NULLABILITY_PRAGMA_PUSH extern int cold; /* nonzero if we are doing a cold boot */ extern int suspend_blocked; /* block suspend due to pending shutdown */ extern int rebooting; /* kern_reboot() has been called. */ extern const char *panicstr; /* panic message */ extern bool panicked; #define KERNEL_PANICKED() __predict_false(panicked) extern char version[]; /* system version */ extern char compiler_version[]; /* compiler 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). * Keep in sync with vm_guest_sysctl_names[]. */ enum VM_GUEST { VM_GUEST_NO = 0, VM_GUEST_VM, VM_GUEST_XEN, VM_GUEST_HV, VM_GUEST_VMWARE, VM_GUEST_KVM, VM_GUEST_BHYVE, VM_GUEST_VBOX, VM_GUEST_PARALLELS, VM_LAST }; /* * These functions need to be declared before the KASSERT macro is invoked in * !KASSERT_PANIC_OPTIONAL builds, so their declarations are sort of out of * place compared to other function definitions in this header. On the other * hand, this header is a bit disorganized anyway. */ void panic(const char *, ...) __dead2 __printflike(1, 2); void vpanic(const char *, __va_list) __dead2 __printflike(1, 0); #if defined(WITNESS) || defined(INVARIANT_SUPPORT) #ifdef KASSERT_PANIC_OPTIONAL void kassert_panic(const char *fmt, ...) __printflike(1, 2); #else #define kassert_panic panic #endif #endif #ifdef INVARIANTS /* The option is always available */ #define KASSERT(exp,msg) do { \ if (__predict_false(!(exp))) \ kassert_panic msg; \ } while (0) #define VNASSERT(exp, vp, msg) do { \ if (__predict_false(!(exp))) { \ vn_printf(vp, "VNASSERT failed: %s not true at %s:%d (%s)\n",\ #exp, __FILE__, __LINE__, __func__); \ kassert_panic msg; \ } \ } while (0) #define VNPASS(exp, vp) do { \ const char *_exp = #exp; \ VNASSERT(exp, vp, ("condition %s not met at %s:%d (%s)", \ _exp, __FILE__, __LINE__, __func__)); \ } while (0) #define __assert_unreachable() \ panic("executing segment marked as unreachable at %s:%d (%s)\n", \ __FILE__, __LINE__, __func__) #else #define KASSERT(exp,msg) do { \ } while (0) #define VNASSERT(exp, vp, msg) do { \ } while (0) #define VNPASS(exp, vp) do { \ } while (0) #define __assert_unreachable() __unreachable() #endif #ifndef CTASSERT /* Allow lint to override */ #define CTASSERT(x) _Static_assert(x, "compile-time assertion failed") #endif #if defined(_KERNEL) #include /* MAXCPU */ #include /* curthread */ #include #endif /* * Helpful macros for quickly coming up with assertions with informative * panic messages. */ #define MPASS(ex) MPASS4(ex, #ex, __FILE__, __LINE__) #define MPASS2(ex, what) MPASS4(ex, what, __FILE__, __LINE__) #define MPASS3(ex, file, line) MPASS4(ex, #ex, file, line) #define MPASS4(ex, what, file, line) \ KASSERT((ex), ("Assertion %s failed at %s:%d", what, file, line)) /* * 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) /* * Assert that a thread is in critical(9) section. */ #define CRITICAL_ASSERT(td) \ KASSERT((td)->td_critnest >= 1, ("Not in critical section")); /* * 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_TD(td) ({ \ MPASS((td) == curthread); \ __predict_false((td)->td_stopsched); \ }) #define SCHEDULER_STOPPED() SCHEDULER_STOPPED_TD(curthread) /* * Align variables. */ #define __read_mostly __section(".data.read_mostly") #define __read_frequently __section(".data.read_frequently") #define __exclusive_cache_line __aligned(CACHE_LINE_SIZE) \ __section(".data.exclusive_cache_line") /* * 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 bool dynamic_kenv; extern struct mtx kenv_lock; extern char *kern_envp; extern char *md_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 unmapped_buf_allowed; #ifdef __LP64__ #define IOSIZE_MAX iosize_max() #define DEVFS_IOSIZE_MAX devfs_iosize_max() #else #define IOSIZE_MAX SSIZE_MAX #define DEVFS_IOSIZE_MAX SSIZE_MAX #endif /* * 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; struct eventtimer; 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 *phashinit_flags(int count, struct malloc_type *type, u_long *nentries, int flags); void g_waitidle(void); void cpu_boot(int); void cpu_flush_dcache(void *, size_t); void cpu_rootconf(void); void critical_enter_KBI(void); void critical_exit_KBI(void); void critical_exit_preempt(void); void init_param1(void); void init_param2(long physpages); void init_static_kenv(char *, size_t); void tablefull(const char *); /* * Allocate per-thread "current" state in the linuxkpi */ extern int (*lkpi_alloc_current)(struct thread *, int); int linux_alloc_current_noop(struct thread *, int); #if defined(KLD_MODULE) || defined(KTR_CRITICAL) || !defined(_KERNEL) || defined(GENOFFSET) #define critical_enter() critical_enter_KBI() #define critical_exit() critical_exit_KBI() #else static __inline void critical_enter(void) { struct thread_lite *td; td = (struct thread_lite *)curthread; td->td_critnest++; __compiler_membar(); } static __inline void critical_exit(void) { struct thread_lite *td; td = (struct thread_lite *)curthread; KASSERT(td->td_critnest != 0, ("critical_exit: td_critnest == 0")); __compiler_membar(); td->td_critnest--; __compiler_membar(); if (__predict_false(td->td_owepreempt)) critical_exit_preempt(); } #endif #ifdef EARLY_PRINTF typedef void early_putc_t(int ch); extern early_putc_t *early_putc; #endif 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 *); void vlog(int, const char *, __va_list) __printflike(2, 0); int asprintf(char **ret, struct malloc_type *mtp, const char *format, ...) __printflike(3, 4); 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 vasprintf(char **ret, struct malloc_type *mtp, const char *format, __va_list ap) __printflike(3, 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 sscanf(const char *, char const * _Nonnull, ...) __scanflike(2, 3); int vsscanf(const char * _Nonnull, char const * _Nonnull, __va_list) __scanflike(2, 0); long strtol(const char *, char **, int); u_long strtoul(const char *, char **, int); quad_t strtoq(const char *, char **, int); u_quad_t strtouq(const char *, char **, int); void tprintf(struct proc *p, int pri, const char *, ...) __printflike(3, 4); void vtprintf(struct proc *, int, const char *, __va_list) __printflike(3, 0); 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 * _Nonnull from, void * _Nonnull to, size_t len); void bzero(void * _Nonnull buf, size_t len); void explicit_bzero(void * _Nonnull, size_t); int bcmp(const void *b1, const void *b2, size_t len); void *memset(void * _Nonnull buf, int c, size_t len); void *memcpy(void * _Nonnull to, const void * _Nonnull from, size_t len); void *memmove(void * _Nonnull dest, const void * _Nonnull src, size_t n); int memcmp(const void *b1, const void *b2, size_t len); #ifdef KCSAN void *kcsan_memset(void *, int, size_t); void *kcsan_memcpy(void *, const void *, size_t); void *kcsan_memmove(void *, const void *, size_t); int kcsan_memcmp(const void *, const void *, size_t); #define bcopy(from, to, len) kcsan_memmove((to), (from), (len)) #define bzero(buf, len) kcsan_memset((buf), 0, (len)) #define bcmp(b1, b2, len) kcsan_memcmp((b1), (b2), (len)) #define memset(buf, c, len) kcsan_memset((buf), (c), (len)) #define memcpy(to, from, len) kcsan_memcpy((to), (from), (len)) #define memmove(dest, src, n) kcsan_memmove((dest), (src), (n)) #define memcmp(b1, b2, len) kcsan_memcmp((b1), (b2), (len)) #else #define bcopy(from, to, len) __builtin_memmove((to), (from), (len)) #define bzero(buf, len) __builtin_memset((buf), 0, (len)) #define bcmp(b1, b2, len) __builtin_memcmp((b1), (b2), (len)) #define memset(buf, c, len) __builtin_memset((buf), (c), (len)) #define memcpy(to, from, len) __builtin_memcpy((to), (from), (len)) #define memmove(dest, src, n) __builtin_memmove((dest), (src), (n)) #define memcmp(b1, b2, len) __builtin_memcmp((b1), (b2), (len)) #endif void *memset_early(void * _Nonnull buf, int c, size_t len); #define bzero_early(buf, len) memset_early((buf), 0, (len)) void *memcpy_early(void * _Nonnull to, const void * _Nonnull from, size_t len); void *memmove_early(void * _Nonnull dest, const void * _Nonnull src, size_t n); #define bcopy_early(from, to, len) memmove_early((to), (from), (len)) #define copystr(src, dst, len, outlen) ({ \ size_t __r, __len, *__outlen; \ \ __len = (len); \ __outlen = (outlen); \ __r = strlcpy((dst), (src), __len); \ if (__outlen != NULL) \ *__outlen = ((__r >= __len) ? __len : __r + 1); \ ((__r >= __len) ? ENAMETOOLONG : 0); \ }) int copyinstr(const void * __restrict udaddr, void * _Nonnull __restrict kaddr, size_t len, size_t * __restrict lencopied); int copyin(const void * __restrict udaddr, void * _Nonnull __restrict kaddr, size_t len); int copyin_nofault(const void * __restrict udaddr, void * _Nonnull __restrict kaddr, size_t len); int copyout(const void * _Nonnull __restrict kaddr, void * __restrict udaddr, size_t len); int copyout_nofault(const void * _Nonnull __restrict kaddr, void * __restrict udaddr, size_t len); #ifdef KCSAN int kcsan_copyin(const void *, void *, size_t); int kcsan_copyinstr(const void *, void *, size_t, size_t *); int kcsan_copyout(const void *, void *, size_t); #define copyin(u, k, l) kcsan_copyin((u), (k), (l)) #define copyinstr(u, k, l, lc) kcsan_copyinstr((u), (k), (l), (lc)) #define copyout(k, u, l) kcsan_copyout((k), (u), (l)) #endif int fubyte(volatile const void *base); long fuword(volatile const void *base); int fuword16(volatile const void *base); int32_t fuword32(volatile const void *base); int64_t fuword64(volatile const void *base); int fueword(volatile const void *base, long *val); int fueword32(volatile const void *base, int32_t *val); int fueword64(volatile const void *base, int64_t *val); int subyte(volatile void *base, int byte); int suword(volatile void *base, long word); int suword16(volatile void *base, int word); int suword32(volatile void *base, int32_t word); int suword64(volatile 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); int casueword32(volatile uint32_t *base, uint32_t oldval, uint32_t *oldvalp, uint32_t newval); int casueword(volatile u_long *p, u_long oldval, u_long *oldvalp, u_long newval); void realitexpire(void *); int sysbeep(int hertz, int period); void hardclock(int cnt, int usermode); void hardclock_sync(int cpu); void softclock(void *); void statclock(int cnt, int usermode); void profclock(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 suspendclock(void); void resumeclock(void); sbintime_t cpu_idleclock(void); void cpu_activeclock(void); void cpu_new_callout(int cpu, sbintime_t bt, sbintime_t bt_opt); void cpu_et_frequency(struct eventtimer *et, uint64_t newfreq); extern int cpu_disable_c2_sleep; extern int cpu_disable_c3_sleep; char *kern_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_int64(const char *name, int64_t *data); int getenv_uint64(const char *name, uint64_t *data); int getenv_quad(const char *name, quad_t *data); int kern_setenv(const char *name, const char *value); int kern_unsetenv(const char *name); int testenv(const char *name); int getenv_array(const char *name, void *data, int size, int *psize, int type_size, bool allow_signed); #define GETENV_UNSIGNED false /* negative numbers not allowed */ #define GETENV_SIGNED true /* negative numbers allowed */ 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 /* 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); /* Stubs for obsolete functions that used to be for interrupt management */ -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 spltty(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(const void * _Nonnull chan, struct lock_object *lock, int pri, const char *wmesg, sbintime_t sbt, sbintime_t pr, int flags); #define msleep(chan, mtx, pri, wmesg, timo) \ _sleep((chan), &(mtx)->lock_object, (pri), (wmesg), \ tick_sbt * (timo), 0, C_HARDCLOCK) #define msleep_sbt(chan, mtx, pri, wmesg, bt, pr, flags) \ _sleep((chan), &(mtx)->lock_object, (pri), (wmesg), (bt), (pr), \ (flags)) int msleep_spin_sbt(const void * _Nonnull chan, struct mtx *mtx, const char *wmesg, sbintime_t sbt, sbintime_t pr, int flags); #define msleep_spin(chan, mtx, wmesg, timo) \ msleep_spin_sbt((chan), (mtx), (wmesg), tick_sbt * (timo), \ 0, C_HARDCLOCK) int pause_sbt(const char *wmesg, sbintime_t sbt, sbintime_t pr, int flags); #define pause(wmesg, timo) \ pause_sbt((wmesg), tick_sbt * (timo), 0, C_HARDCLOCK) #define pause_sig(wmesg, timo) \ pause_sbt((wmesg), tick_sbt * (timo), 0, C_HARDCLOCK | C_CATCH) #define tsleep(chan, pri, wmesg, timo) \ _sleep((chan), NULL, (pri), (wmesg), tick_sbt * (timo), \ 0, C_HARDCLOCK) #define tsleep_sbt(chan, pri, wmesg, bt, pr, flags) \ _sleep((chan), NULL, (pri), (wmesg), (bt), (pr), (flags)) void wakeup(const void *chan); void wakeup_one(const void *chan); void wakeup_any(const void *chan); /* * 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); #ifdef __LP64__ size_t devfs_iosize_max(void); size_t iosize_max(void); #endif 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 { int flags; const char *who; TAILQ_ENTRY(root_hold_token) list; }; struct root_hold_token *root_mount_hold(const char *identifier); void root_mount_hold_token(const char *identifier, struct root_hold_token *h); void root_mount_rel(struct root_hold_token *h); 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 init_unrhdr(struct unrhdr *uh, int low, int high, struct mtx *mutex); void delete_unrhdr(struct unrhdr *uh); void clear_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); #ifndef __LP64__ #define UNR64_LOCKED #endif struct unrhdr64 { uint64_t counter; }; static __inline void new_unrhdr64(struct unrhdr64 *unr64, uint64_t low) { unr64->counter = low; } #ifdef UNR64_LOCKED uint64_t alloc_unr64(struct unrhdr64 *); #else static __inline uint64_t alloc_unr64(struct unrhdr64 *unr64) { return (atomic_fetchadd_64(&unr64->counter, 1)); } #endif void intr_prof_stack_use(struct thread *td, struct trapframe *frame); void counted_warning(unsigned *counter, const char *msg); /* * APIs to manage deprecation and obsolescence. */ struct device; void _gone_in(int major, const char *msg); void _gone_in_dev(struct device *dev, int major, const char *msg); #ifdef NO_OBSOLETE_CODE #define __gone_ok(m, msg) \ _Static_assert(m < P_OSREL_MAJOR(__FreeBSD_version)), \ "Obsolete code: " msg); #else #define __gone_ok(m, msg) #endif #define gone_in(major, msg) __gone_ok(major, msg) _gone_in(major, msg) #define gone_in_dev(dev, major, msg) __gone_ok(major, msg) _gone_in_dev(dev, major, msg) __NULLABILITY_PRAGMA_POP #endif /* !_SYS_SYSTM_H_ */