/* $OpenBSD: cpu.h,v 1.67 2004/08/05 03:07:47 dlg 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 _I386_CPU_H_ #define _I386_CPU_H_ /* * Definitions unique to i386 cpu support. */ #include #include #include #include #ifdef MULTIPROCESSOR #include #include /* XXX for now... */ #define NLAPIC 1 #endif /* * definitions of cpu-dependent requirements * referenced in generic code */ #define cpu_swapin(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 #include #include /* will also get LOCKDEBUG */ #include struct intrsource; /* 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 /* * Private members. */ struct proc *ci_fpcurproc; /* current owner of the FPU */ int ci_fpsaving; /* save in progress */ volatile u_int32_t ci_tlb_ipi_mask; 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 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]; paddr_t ci_idle_pcb_paddr; /* PA of idle PCB */ u_long ci_flags; /* flags; see below */ u_int32_t ci_ipis; /* interprocessor interrupts pending */ int sc_apic_version; /* local APIC version */ u_int32_t ci_level; u_int32_t ci_vendor[4]; u_int32_t ci_signature; /* X86 cpuid type */ u_int32_t ci_feature_flags; /* X86 CPUID feature bits */ u_int32_t cpu_class; /* CPU class */ struct cpu_functions *ci_func; /* start/stop functions */ void (*cpu_setup)(const char *, int, int); /* proc-dependant init */ int ci_want_resched; int ci_astpending; union descriptor *ci_gdt; 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 }; /* * 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) 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 I386_MAXPROCS 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)) #define cpu_number() (i82489_readreg(LAPIC_ID)>>LAPIC_ID_SHIFT) #define curcpu() (cpu_info[cpu_number()]) #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) extern struct cpu_info *cpu_info[I386_MAXPROCS]; extern u_long cpus_running; extern void cpu_boot_secondary_processors(void); extern void cpu_init_idle_pcbs(void); #else /* MULTIPROCESSOR */ #define I386_MAXPROCS 1 #define cpu_number() 0 #define curcpu() (&cpu_info_primary) #define CPU_IS_PRIMARY(ci) 1 /* * definitions of cpu-dependent requirements * referenced in generic code */ #define cpu_swapin(p) /* nothing */ #endif #define curpcb curcpu()->ci_curpcb #define want_resched (curcpu()->ci_want_resched) #define astpending (curcpu()->ci_astpending) /* * 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 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) /* * 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. */ extern void (*delay_func)(int); struct timeval; extern void (*microtime_func)(struct timeval *); #define DELAY(x) (*delay_func)(x) #define delay(x) (*delay_func)(x) #define microtime(tv) (*microtime_func)(tv) #if defined(I586_CPU) || defined(I686_CPU) /* * High resolution clock support (Pentium only) */ void calibrate_cyclecounter(void); #ifndef HZ extern u_quad_t pentium_base_tsc; #define CPU_CLOCKUPDATE() \ do { \ if (pentium_mhz) { \ __asm __volatile("cli\n" \ "rdtsc\n" \ "sti\n" \ : "=A" (pentium_base_tsc) \ : ); \ } \ } while (0) #endif #endif /* * 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)(const char *, int, int); }; 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)(const char *, int, int); } cpu_family[CPU_MAXFAMILY - CPU_MINFAMILY + 1]; }; struct cpu_cpuid_feature { int feature_bit; const char *feature_name; }; #ifdef _KERNEL extern int cpu; extern int cpu_class; extern int cpu_feature; extern int cpu_ecxfeature; extern int cpu_apmwarn; extern int cpu_apmhalt; extern int cpuid_level; extern const struct cpu_nocpuid_nameclass i386_nocpuid_cpus[]; extern const 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(void); #endif /* 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 *); void fillw(short, void *, size_t); struct pcb; void savectx(struct pcb *); void switch_exit(struct proc *); void proc_trampoline(void); /* clock.c */ void initrtclock(void); void startrtclock(void); void rtcdrain(void *); void i8254_delay(int); void i8254_microtime(struct timeval *); void i8254_initclocks(void); /* est.c */ #if !defined(SMALL_KERNEL) && defined(I686_CPU) void est_init(const char *); int est_setperf(int); #endif /* longrun.c */ #if !defined(SMALL_KERNEL) && defined(I586_CPU) void longrun_init(void); int longrun_setperf(int); #endif /* p4tcc.c */ #if !defined(SMALL_KERNEL) && defined(I686_CPU) void p4tcc_init(int, int); int p4tcc_setperf(int); #endif void k6_powernow_init(void); int k6_powernow_setperf(int); void k7_powernow_init(uint32_t); int k7_powernow_setperf(int); /* npx.c */ void npxdrop(struct proc *); void npxsave_proc(struct proc *, int); void npxsave_cpu(struct cpu_info *, int); #if defined(GPL_MATH_EMULATE) /* math_emulate.c */ int math_emulate(struct trapframe *); #endif #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 VM86 /* vm86.c */ void vm86_gpfault(struct proc *, int); #endif /* VM86 */ #ifdef GENERIC /* swapgeneric.c */ void setconf(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_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_MAXID 17 /* 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 }, \ } /* * This needs to be included late since it relies on definitions higher * up in this file. */ #if defined(MULTIPROCESSOR) && defined(_KERNEL) #include #endif #endif /* !_I386_CPU_H_ */