/* $OpenBSD: cpu.h,v 1.122 2012/03/27 06:44:01 jsg 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. */ #include #include #include #include #ifdef MULTIPROCESSOR #include #include #endif /* * 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 #include /* will also get LOCKDEBUG */ #include #include struct intrsource; #ifdef _KERNEL /* XXX stuff to move to cpuvar.h later */ struct cpu_info { 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 */ struct simplelock ci_slock; /* lock on this data structure */ cpuid_t ci_cpuid; /* our CPU ID */ u_int ci_apicid; /* our APIC ID */ #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) u_long ci_spin_locks; /* # of spin locks held */ u_long ci_simple_locks; /* # of simple locks held */ #endif u_int32_t ci_randseed; /* * 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 */ int ci_idle_tss_sel; /* TSS selector of idle 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 cpu_class; /* CPU class */ u_int32_t ci_cflushsz; /* clflush cache-line size */ struct cpu_functions *ci_func; /* start/stop functions */ void (*cpu_setup)(struct cpu_info *); /* proc-dependant init */ int ci_want_resched; union descriptor *ci_gdt; union descriptor *ci_ldt; /* per-cpu default LDT */ int ci_ldt_len; /* in bytes */ 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 volatile int ci_setperf_state; #define CI_SETPERF_READY 0 #define CI_SETPERF_SHOULDSTOP 1 #define CI_SETPERF_INTRANSIT 2 #define CI_SETPERF_DONE 3 struct ksensordev ci_sensordev; struct ksensor ci_sensor; }; /* * Processor flag notes: The "primary" CPU has certain MI-defined * roles (mostly relating to hardclock handling); we distinguish * betwen 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_PRESENT 0x1000 /* CPU is present */ #define CPUF_RUNNING 0x2000 /* CPU is running */ /* * 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. */ extern struct cpu_info cpu_info_primary; 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.dv_unit) #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); __inline static 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) extern struct cpu_info *cpu_info[MAXCPUS]; extern void cpu_boot_secondary_processors(void); extern void cpu_init_idle_pcbs(void); void cpu_unidle(struct cpu_info *); #else /* MULTIPROCESSOR */ #define MAXCPUS 1 #define cpu_number() 0 #define curcpu() (&cpu_info_primary) #define CPU_IS_PRIMARY(ci) 1 #define cpu_unidle(ci) #endif #define aston(p) ((p)->p_md.md_astpending = 1) #define curpcb curcpu()->ci_curpcb #define want_resched (curcpu()->ci_want_resched) /* * 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) /* * 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); 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 struct cpu_nocpuid_nameclass { int cpu_vendor; const char *cpu_vendorname; const char *cpu_name; int cpu_class; void (*cpu_setup)(struct cpu_info *); }; 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; 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; /* machdep.c */ extern int cpu_apmhalt; extern int cpu_class; extern char cpu_model[]; extern const struct cpu_nocpuid_nameclass i386_nocpuid_cpus[]; 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); /* apm.c */ extern int cpu_apmwarn; 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); /* machdep.c */ void dumpconf(void); void cpu_reset(void); void i386_proc0_tss_ldt_init(void); void i386_init_pcb_tss_ldt(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 */ extern void (*initclock_func)(void); void startclocks(void); void rtcdrain(void *); void rtcstart(void); void rtcstop(void); void i8254_delay(int); void i8254_initclocks(void); void i8254_startclock(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); #ifdef USER_LDT /* sys_machdep.h */ extern int user_ldt_enable; int i386_get_ldt(struct proc *, void *, register_t *); int i386_set_ldt(struct proc *, void *, register_t *); #endif /* isa_machdep.c */ void isa_defaultirq(void); void isa_nodefaultirq(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 #ifdef VM86 /* vm86.c */ void vm86_gpfault(struct proc *, int); #endif /* VM86 */ #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_APMWARN 9 /* APM battery warning percentage */ #define CPU_KBDRESET 10 /* keyboard reset under pcvt */ #define CPU_APMHALT 11 /* halt -p hack */ #define CPU_USERLDT 12 #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_LIDSUSPEND 17 /* lid close causes a suspend */ #define CPU_MAXID 18 /* 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 }, \ { "apmwarn", CTLTYPE_INT }, \ { "kbdreset", CTLTYPE_INT }, \ { "apmhalt", CTLTYPE_INT }, \ { "userldt", CTLTYPE_INT }, \ { "osfxsr", CTLTYPE_INT }, \ { "sse", CTLTYPE_INT }, \ { "sse2", CTLTYPE_INT }, \ { "xcrypt", CTLTYPE_INT }, \ { "lidsuspend", CTLTYPE_INT }, \ } /* * This needs to be included late since it relies on definitions higher * up in this file. */ #if defined(MULTIPROCESSOR) && defined(_KERNEL) #include #endif #endif /* !_MACHINE_CPU_H_ */