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/* $OpenBSD: cpu.h,v 1.19 1997/12/17 08:54:51 downsj Exp $ */
/* $NetBSD: cpu.h,v 1.35 1996/05/05 19:29:26 christos Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 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.
*
* @(#)cpu.h 5.4 (Berkeley) 5/9/91
*/
#ifndef _I386_CPU_H_
#define _I386_CPU_H_
/*
* Definitions unique to i386 cpu support.
*/
#include <machine/psl.h>
#include <machine/frame.h>
#include <machine/segments.h>
/*
* definitions of cpu-dependent requirements
* referenced in generic code
*/
#define cpu_swapin(p) /* nothing */
#define cpu_wait(p) /* nothing */
/*
* Arguments to hardclock, softclock and statclock
* encapsulate the previous machine state in an opaque
* clockframe; for now, use generic intrframe.
*
* XXX intrframe has a lot of gunk we don't need.
*/
#define clockframe intrframe
#define CLKF_USERMODE(frame) USERMODE((frame)->if_cs, (frame)->if_eflags)
#define CLKF_BASEPRI(frame) ((frame)->if_ppl == 0)
#define CLKF_PC(frame) ((frame)->if_eip)
#define CLKF_INTR(frame) (IDXSEL((frame)->if_cs) == GICODE_SEL)
/*
* Preempt the current process if in interrupt from user mode,
* or after the current trap/syscall if in system mode.
*/
int want_resched; /* resched() was called */
#define need_resched() (want_resched = 1, setsoftast())
/*
* Give a profiling tick to the current process when the user profiling
* buffer pages are invalid. On the i386, request an ast to send us
* through trap(), marking the proc as needing a profiling tick.
*/
#define need_proftick(p) ((p)->p_flag |= P_OWEUPC, setsoftast())
/*
* Notify the current process (p) that it has a signal pending,
* process as soon as possible.
*/
#define signotify(p) setsoftast()
/*
* We need a machine-independent name for this.
*/
#define DELAY(x) delay(x)
void delay __P((int));
#if defined(I586_CPU) || defined(I686_CPU)
/*
* High resolution clock support (Pentium only)
*/
void calibrate_cyclecounter __P((void));
extern u_quad_t pentium_base_tsc;
#define CPU_CLOCKUPDATE(otime, ntime) \
do { \
if (pentium_mhz) { \
__asm __volatile("cli\n" \
"movl (%3), %%eax\n" \
"movl %%eax, (%2)\n" \
"movl 4(%3), %%eax\n" \
"movl %%eax, 4(%2)\n" \
".byte 0xf, 0x31\n" \
"sti\n" \
"#%0 %1 %2 %3" \
: "=m" (*otime), \
"=A" (pentium_base_tsc) \
: "c" (otime), "b" (ntime)); \
} \
else { \
*(otime) = *(ntime); \
} \
} while (0)
#endif
void delay __P((int));
/*
* pull in #defines for kinds of processors
*/
#include <machine/cputypes.h>
struct cpu_nocpuid_nameclass {
int cpu_vendor;
const char *cpu_vendorname;
const char *cpu_name;
int cpu_class;
void (*cpu_setup) __P((const char *));
};
struct cpu_cpuid_nameclass {
const char *cpu_id;
int cpu_vendor;
const char *cpu_vendorname;
struct cpu_cpuid_family {
int cpu_class;
const char *cpu_models[CPU_MAXMODEL+2];
void (*cpu_setup) __P((const char *));
} cpu_family[CPU_MAXFAMILY - CPU_MINFAMILY + 1];
};
#ifdef _KERNEL
extern int cpu;
extern int cpu_class;
extern int cpu_feature;
extern int cpuid_level;
extern struct cpu_nocpuid_nameclass i386_nocpuid_cpus[];
extern struct cpu_cpuid_nameclass i386_cpuid_cpus[];
#if defined(I586_CPU) || defined(I686_CPU)
extern int pentium_mhz;
#endif
#ifdef I586_CPU
/* F00F bug fix stuff for pentium cpu */
extern int cpu_f00f_bug;
void fix_f00f __P((void));
#endif
/* autoconf.c */
void configure __P((void));
/* machdep.c */
void delay __P((int));
void dumpconf __P((void));
void cpu_reset __P((void));
/* locore.s */
struct region_descriptor;
void lgdt __P((struct region_descriptor *));
void fillw __P((short, void *, size_t));
short fusword __P((u_short *));
int susword __P((u_short *t, u_short));
struct pcb;
void savectx __P((struct pcb *));
void switch_exit __P((struct proc *));
void proc_trampoline __P((void));
/* clock.c */
void startrtclock __P((void));
/* npx.c */
void npxdrop __P((void));
void npxsave __P((void));
#if defined(MATH_EMULATE) || defined(GPL_MATH_EMULATE)
/* math_emulate.c */
int math_emulate __P((struct trapframe *));
#endif
#ifdef USER_LDT
/* sys_machdep.h */
void i386_user_cleanup __P((struct pcb *));
int i386_get_ldt __P((struct proc *, char *, register_t *));
int i386_set_ldt __P((struct proc *, char *, register_t *));
#endif
/* isa_machdep.c */
void isa_defaultirq __P((void));
int isa_nmi __P((void));
/* vm_machdep.c */
int kvtop __P((caddr_t));
#ifdef VM86
/* vm86.c */
void vm86_gpfault __P((struct proc *, int));
#endif /* VM86 */
/* trap.c */
void child_return __P((struct proc *, struct trapframe));
#ifdef GENERIC
/* swapgeneric.c */
void setconf __P((void));
#endif /* GENERIC */
#endif /* _KERNEL */
/*
* CTL_MACHDEP definitions.
*/
#define CPU_CONSDEV 1 /* dev_t: console terminal device */
#define CPU_BIOS 2 /* BIOS variables */
#define CPU_BLK2CHR 3 /* convert blk maj into chr one */
#define CPU_CHR2BLK 4 /* convert chr maj into blk one */
#define CPU_MAXID 5 /* number of valid machdep ids */
#define CTL_MACHDEP_NAMES { \
{ 0, 0 }, \
{ "console_device", CTLTYPE_STRUCT }, \
{ "bios", CTLTYPE_INT }, \
{ "blk2chr", CTLTYPE_STRUCT }, \
{ "chr2blk", CTLTYPE_STRUCT }, \
}
#endif /* !_I386_CPU_H_ */
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