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src/sys/arch/i386/include/cpu.h

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/* $OpenBSD: cpu.h,v 1.188 2024/05/01 12:54:27 mpi 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. 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 _MACHINE_CPU_H_
#define _MACHINE_CPU_H_
/*
* Definitions unique to i386 cpu support.
*/
#ifdef _KERNEL
#include <machine/frame.h>
#include <machine/psl.h>
#include <machine/segments.h>
#include <machine/intrdefs.h>
#include <machine/tss.h>
#ifdef MULTIPROCESSOR
#include <machine/i82489reg.h>
#include <machine/i82489var.h>
#endif
#endif /* _KERNEL */
/*
* 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
#include <sys/clockintr.h>
#include <sys/device.h>
#include <sys/sched.h>
#include <sys/sensors.h>
#include <sys/srp.h>
#include <uvm/uvm_percpu.h>
struct intrsource;
#ifdef _KERNEL
/* XXX stuff to move to cpuvar.h later */
struct cpu_info {
u_int32_t ci_kern_cr3; /* U+K page table */
u_int32_t ci_scratch; /* for U<-->K transition */
#define ci_PAGEALIGN ci_dev
struct device *ci_dev; /* our device */
struct cpu_info *ci_self; /* pointer to this structure */
struct schedstate_percpu ci_schedstate; /* scheduler state */
struct cpu_info *ci_next; /* next cpu */
/*
* Public members.
*/
struct proc *ci_curproc; /* current owner of the processor */
cpuid_t ci_cpuid; /* our CPU ID */
u_int ci_apicid; /* our APIC ID */
u_int ci_acpi_proc_id;
u_int32_t ci_randseed;
u_int32_t ci_kern_esp; /* kernel-only stack */
u_int32_t ci_intr_esp; /* U<-->K trampoline stack */
u_int32_t ci_user_cr3; /* U-K page table */
#if defined(MULTIPROCESSOR)
struct srp_hazard ci_srp_hazards[SRP_HAZARD_NUM];
#define __HAVE_UVM_PERCPU
struct uvm_pmr_cache ci_uvm;
#endif
/*
* Private members.
*/
struct proc *ci_fpcurproc; /* current owner of the FPU */
struct proc *ci_fpsaveproc;
int ci_fpsaving; /* save in progress */
struct pcb *ci_curpcb; /* VA of current HW PCB */
struct pcb *ci_idle_pcb; /* VA of current PCB */
struct pmap *ci_curpmap;
struct intrsource *ci_isources[MAX_INTR_SOURCES];
u_int32_t ci_ipending;
int ci_ilevel;
int ci_idepth;
u_int32_t ci_imask[NIPL];
u_int32_t ci_iunmask[NIPL];
#ifdef DIAGNOSTIC
int ci_mutex_level;
#endif
paddr_t ci_idle_pcb_paddr; /* PA of idle PCB */
volatile u_long ci_flags; /* flags; see below */
u_int32_t ci_ipis; /* interprocessor interrupts pending */
u_int32_t ci_level;
u_int32_t ci_vendor[4];
u_int32_t ci_signature; /* X86 cpuid type */
u_int32_t ci_family; /* extended cpuid family */
u_int32_t ci_model; /* extended cpuid model */
u_int32_t ci_feature_flags; /* X86 CPUID feature bits */
u_int32_t ci_feature_sefflags_ebx;/* more CPUID feature bits */
u_int32_t ci_feature_sefflags_ecx;/* more CPUID feature bits */
u_int32_t ci_feature_sefflags_edx;/* more CPUID feature bits */
u_int32_t ci_feature_tpmflags; /* thermal & power bits */
u_int32_t cpu_class; /* CPU class */
u_int32_t ci_cflushsz; /* clflush cache-line size */
int ci_inatomic;
struct cpu_functions *ci_func; /* start/stop functions */
void (*cpu_setup)(struct cpu_info *); /* proc-dependant init */
struct device *ci_acpicpudev;
volatile u_int ci_mwait;
#define MWAIT_IN_IDLE 0x1 /* don't need IPI to wake */
#define MWAIT_KEEP_IDLING 0x2 /* cleared by other cpus to wake me */
#define MWAIT_ONLY 0x4 /* set if all idle states use mwait */
#define MWAIT_IDLING (MWAIT_IN_IDLE | MWAIT_KEEP_IDLING)
int ci_want_resched;
union descriptor *ci_gdt;
struct i386tss *ci_tss;
struct i386tss *ci_nmi_tss;
volatile int ci_ddb_paused; /* paused due to other proc in ddb */
#define CI_DDB_RUNNING 0
#define CI_DDB_SHOULDSTOP 1
#define CI_DDB_STOPPED 2
#define CI_DDB_ENTERDDB 3
#define CI_DDB_INDDB 4
struct ksensordev ci_sensordev;
struct ksensor ci_sensor;
#if defined(GPROF) || defined(DDBPROF)
struct gmonparam *ci_gmon;
struct clockintr ci_gmonclock;
#endif
struct clockqueue ci_queue;
char ci_panicbuf[512];
};
/*
* Processor flag notes: The "primary" CPU has certain MI-defined
* roles (mostly relating to hardclock handling); we distinguish
* between the processor which booted us, and the processor currently
* holding the "primary" role just to give us the flexibility later to
* change primaries should we be sufficiently twisted.
*/
#define CPUF_BSP 0x0001 /* CPU is the original BSP */
#define CPUF_AP 0x0002 /* CPU is an AP */
#define CPUF_SP 0x0004 /* CPU is only processor */
#define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */
#define CPUF_APIC_CD 0x0010 /* CPU has apic configured */
#define CPUF_CONST_TSC 0x0020 /* CPU has constant TSC */
#define CPUF_PRESENT 0x1000 /* CPU is present */
#define CPUF_RUNNING 0x2000 /* CPU is running */
#define CPUF_VMM 0x4000 /* CPU is executing in VMM mode */
/*
* We statically allocate the CPU info for the primary CPU (or,
* the only CPU on uniprocessors), and the primary CPU is the
* first CPU on the CPU info list.
*/
struct cpu_info_full;
extern struct cpu_info_full cpu_info_full_primary;
#define cpu_info_primary (*(struct cpu_info *)((char *)&cpu_info_full_primary + PAGE_SIZE*2 - offsetof(struct cpu_info, ci_PAGEALIGN)))
extern struct cpu_info *cpu_info_list;
#define CPU_INFO_ITERATOR int
#define CPU_INFO_FOREACH(cii, ci) for (cii = 0, ci = cpu_info_list; \
ci != NULL; ci = ci->ci_next)
#define CPU_INFO_UNIT(ci) ((ci)->ci_dev ? (ci)->ci_dev->dv_unit : 0)
#ifdef MULTIPROCESSOR
#define MAXCPUS 32 /* because we use a bitmask */
#define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci))
#define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci))
#define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci))
static struct cpu_info *curcpu(void);
static __inline struct cpu_info *
curcpu(void)
{
struct cpu_info *ci;
/* Can't include sys/param.h for offsetof() since it includes us */
__asm volatile("movl %%fs:%1, %0" :
"=r" (ci) : "m"
(*(struct cpu_info * const *)&((struct cpu_info *)0)->ci_self));
return ci;
}
#define cpu_number() (curcpu()->ci_cpuid)
#define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY)
#define CPU_IS_RUNNING(ci) ((ci)->ci_flags & CPUF_RUNNING)
extern struct cpu_info *cpu_info[MAXCPUS];
extern void cpu_boot_secondary_processors(void);
extern void cpu_init_idle_pcbs(void);
void cpu_kick(struct cpu_info *);
void cpu_unidle(struct cpu_info *);
#define CPU_BUSY_CYCLE() __asm volatile("pause": : : "memory")
#else /* MULTIPROCESSOR */
#define MAXCPUS 1
#define cpu_number() 0
#define curcpu() (&cpu_info_primary)
#define CPU_IS_PRIMARY(ci) 1
#define CPU_IS_RUNNING(ci) 1
#define cpu_kick(ci)
#define cpu_unidle(ci)
#define CPU_BUSY_CYCLE() do {} while (0)
#endif
#include <machine/cpufunc.h>
#define aston(p) ((p)->p_md.md_astpending = 1)
#define curpcb curcpu()->ci_curpcb
unsigned int cpu_rnd_messybits(void);
/*
* Preempt the current process if in interrupt from user mode,
* or after the current trap/syscall if in system mode.
*/
extern void need_resched(struct cpu_info *);
#define clear_resched(ci) (ci)->ci_want_resched = 0
#define CLKF_USERMODE(frame) USERMODE((frame)->if_cs, (frame)->if_eflags)
#define CLKF_PC(frame) ((frame)->if_eip)
#define CLKF_INTR(frame) (IDXSEL((frame)->if_cs) == GICODE_SEL)
/*
* This is used during profiling to integrate system time.
*/
#define PROC_PC(p) ((p)->p_md.md_regs->tf_eip)
#define PROC_STACK(p) ((p)->p_md.md_regs->tf_esp)
/*
* 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) aston(p)
/*
* Notify the current process (p) that it has a signal pending,
* process as soon as possible.
*/
void signotify(struct proc *);
/*
* We need a machine-independent name for this.
*/
extern void (*delay_func)(int);
void delay_fini(void(*)(int));
void delay_init(void(*)(int), int);
struct timeval;
#define DELAY(x) (*delay_func)(x)
#define delay(x) (*delay_func)(x)
/*
* High resolution clock support (Pentium only)
*/
void calibrate_cyclecounter(void);
/*
* pull in #defines for kinds of processors
*/
#include <machine/cputypes.h>
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)(struct cpu_info *);
} cpu_family[CPU_MAXFAMILY - CPU_MINFAMILY + 1];
};
struct cpu_cpuid_feature {
int feature_bit;
const char *feature_name;
};
/* locore.s */
extern int cpu_id;
extern char cpu_vendor[]; /* note: NOT nul-terminated */
extern char cpu_brandstr[];
extern int cpuid_level;
extern int cpu_miscinfo;
extern int cpu_feature;
extern int ecpu_feature;
extern int cpu_ecxfeature;
extern int ecpu_ecxfeature;
extern int cpu_cache_eax;
extern int cpu_cache_ebx;
extern int cpu_cache_ecx;
extern int cpu_cache_edx;
extern int cpu_perf_eax;
extern int cpu_perf_ebx;
extern int cpu_perf_edx;
extern int cpu_apmi_edx;
extern int cpu_pae; /* cpu has both PAE and NX features */
/* cpu.c */
extern u_int cpu_mwait_size;
extern u_int cpu_mwait_states;
extern void cpu_update_nmi_cr3(vaddr_t);
extern void cpu_tsx_disable(struct cpu_info *);
/* machdep.c */
extern int cpu_apmhalt;
extern int cpu_class;
extern char cpu_model[];
extern const struct cpu_cpuid_nameclass i386_cpuid_cpus[];
extern void (*cpu_idle_enter_fcn)(void);
extern void (*cpu_idle_cycle_fcn)(void);
extern void (*cpu_idle_leave_fcn)(void);
extern int cpuspeed;
#if !defined(SMALL_KERNEL)
#define BUS66 6667
#define BUS100 10000
#define BUS133 13333
#define BUS166 16667
#define BUS200 20000
#define BUS266 26667
#define BUS333 33333
extern int bus_clock;
#endif
/* F00F bug fix stuff for pentium cpu */
extern int cpu_f00f_bug;
void fix_f00f(void);
/* dkcsum.c */
void dkcsumattach(void);
extern int i386_use_fxsave;
extern int i386_has_sse;
extern int i386_has_sse2;
extern void (*update_cpuspeed)(void);
extern void (*initclock_func)(void);
extern void (*startclock_func)(void);
/* machdep.c */
void dumpconf(void);
void cpu_reset(void);
void i386_proc0_tss_init(void);
void i386_init_pcb_tss(struct cpu_info *);
void cpuid(u_int32_t, u_int32_t *);
/* locore.s */
struct region_descriptor;
void lgdt(struct region_descriptor *);
struct pcb;
void savectx(struct pcb *);
void switch_exit(struct proc *);
void proc_trampoline(void);
/* clock.c */
void startclocks(void);
void rtcinit(void);
void rtcstart(void);
void rtcstop(void);
void i8254_delay(int);
void i8254_initclocks(void);
void i8254_startclock(void);
void i8254_start_both_clocks(void);
void i8254_inittimecounter(void);
void i8254_inittimecounter_simple(void);
#if !defined(SMALL_KERNEL)
/* est.c */
void est_init(struct cpu_info *, int);
void est_setperf(int);
/* longrun.c */
void longrun_init(void);
void longrun_setperf(int);
/* p4tcc.c */
void p4tcc_init(int, int);
void p4tcc_setperf(int);
/* powernow.c */
void k6_powernow_init(void);
void k6_powernow_setperf(int);
/* powernow-k7.c */
void k7_powernow_init(void);
void k7_powernow_setperf(int);
/* powernow-k8.c */
void k8_powernow_init(void);
void k8_powernow_setperf(int);
/* k1x-pstate.c */
void k1x_init(struct cpu_info *);
void k1x_setperf(int);
#endif
/* npx.c */
void npxdrop(struct proc *);
void npxsave_proc(struct proc *, int);
void npxsave_cpu(struct cpu_info *, int);
/* isa_machdep.c */
void isa_defaultirq(void);
int isa_nmi(void);
/* pmap.c */
void pmap_bootstrap(vaddr_t);
/* vm_machdep.c */
int kvtop(caddr_t);
#ifdef MULTIPROCESSOR
/* mp_setperf.c */
void mp_setperf_init(void);
#endif
int cpu_paenable(void *);
#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_ALLOWAPERTURE 5 /* allow mmap of /dev/xf86 */
#define CPU_CPUVENDOR 6 /* cpuid vendor string */
#define CPU_CPUID 7 /* cpuid */
#define CPU_CPUFEATURE 8 /* cpuid features */
#define CPU_KBDRESET 10 /* keyboard reset under pcvt */
#define CPU_OSFXSR 13 /* uses FXSAVE/FXRSTOR */
#define CPU_SSE 14 /* supports SSE */
#define CPU_SSE2 15 /* supports SSE2 */
#define CPU_XCRYPT 16 /* supports VIA xcrypt in userland */
#define CPU_LIDACTION 18 /* action caused by lid close */
#define CPU_FORCEUKBD 19 /* Force ukbd(4) as console keyboard */
#define CPU_MAXID 20 /* number of valid machdep ids */
#define CTL_MACHDEP_NAMES { \
{ 0, 0 }, \
{ "console_device", CTLTYPE_STRUCT }, \
{ "bios", CTLTYPE_INT }, \
{ "blk2chr", CTLTYPE_STRUCT }, \
{ "chr2blk", CTLTYPE_STRUCT }, \
{ "allowaperture", CTLTYPE_INT }, \
{ "cpuvendor", CTLTYPE_STRING }, \
{ "cpuid", CTLTYPE_INT }, \
{ "cpufeature", CTLTYPE_INT }, \
{ 0, 0 }, \
{ "kbdreset", CTLTYPE_INT }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ "osfxsr", CTLTYPE_INT }, \
{ "sse", CTLTYPE_INT }, \
{ "sse2", CTLTYPE_INT }, \
{ "xcrypt", CTLTYPE_INT }, \
{ 0, 0 }, \
{ "lidaction", CTLTYPE_INT }, \
{ "forceukbd", CTLTYPE_INT }, \
}
/*
* This needs to be included late since it relies on definitions higher
* up in this file.
*/
#if defined(MULTIPROCESSOR) && defined(_KERNEL)
#include <sys/mplock.h>
#endif
#endif /* !_MACHINE_CPU_H_ */
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