/* $OpenBSD: cpu.h,v 1.4 2001/08/19 05:12:47 art Exp $ */ /* $NetBSD: cpu.h,v 1.28 2001/06/14 22:56:58 thorpej Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * 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, Lawrence Berkeley Laboratory. * * 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 8.4 (Berkeley) 1/5/94 */ #ifndef _CPU_H_ #define _CPU_H_ /* * CTL_MACHDEP definitions. */ #define CPU_BOOTED_KERNEL 1 /* string: booted kernel name */ #define CPU_MAXID 2 /* number of valid machdep ids */ #define CTL_MACHDEP_NAMES { \ { 0, 0 }, \ { "booted_kernel", CTLTYPE_STRING }, \ } #ifdef _KERNEL /* * Exported definitions unique to SPARC cpu support. */ #include #include #include #include /*#include */ /* * CPU states. * XXX Not really scheduler state, but no other good place to put * it right now, and it really is per-CPU. */ #define CP_USER 0 #define CP_NICE 1 #define CP_SYS 2 #define CP_INTR 3 #define CP_IDLE 4 #define CPUSTATES 5 /* * Per-CPU scheduler state. */ struct schedstate_percpu { struct timeval spc_runtime; /* time curproc started running */ __volatile int spc_flags; /* flags; see below */ u_int spc_schedticks; /* ticks for schedclock() */ u_int64_t spc_cp_time[CPUSTATES]; /* CPU state statistics */ u_char spc_curpriority; /* usrpri of curproc */ int spc_rrticks; /* ticks until roundrobin() */ int spc_pscnt; /* prof/stat counter */ int spc_psdiv; /* prof/stat divisor */ }; /* * The cpu_info structure is part of a 64KB structure mapped both the kernel * pmap and a single locked TTE a CPUINFO_VA for that particular processor. * Each processor's cpu_info is accessible at CPUINFO_VA only for that * processor. Other processors can access that through an additional mapping * in the kernel pmap. * * The 64KB page contains: * * cpu_info * interrupt stack (all remaining space) * idle PCB * idle stack (STACKSPACE - sizeof(PCB)) * 32KB TSB */ struct cpu_info { /* Most important fields first */ struct proc *ci_curproc; struct pcb *ci_cpcb; /* also initial stack */ struct cpu_info *ci_next; struct proc *ci_fpproc; int ci_number; int ci_upaid; struct schedstate_percpu ci_schedstate; /* scheduler state */ /* DEBUG/DIAGNOSTIC stuff */ u_long ci_spin_locks; /* # of spin locks held */ u_long ci_simple_locks;/* # of simple locks held */ /* Spinning up the CPU */ void (*ci_spinup) __P((void)); /* spinup routine */ void *ci_initstack; paddr_t ci_paddr; /* Phys addr of this structure. */ }; extern struct cpu_info *cpus; extern struct cpu_info cpu_info_store; #if 1 #define curcpu() (&cpu_info_store) #else #define curcpu() ((struct cpu_info *)CPUINFO_VA) #endif /* * definitions of cpu-dependent requirements * referenced in generic code */ #define cpu_swapin(p) /* nothing */ #define cpu_swapout(p) /* nothing */ #define cpu_wait(p) /* nothing */ #if 1 #define cpu_number() 0 #else #define cpu_number() (curcpu()->ci_number) #endif /* * Arguments to hardclock, softclock and gatherstats encapsulate the * previous machine state in an opaque clockframe. The ipl is here * as well for strayintr (see locore.s:interrupt and intr.c:strayintr). * Note that CLKF_INTR is valid only if CLKF_USERMODE is false. */ extern int intstack[]; extern int eintstack[]; struct clockframe { struct trapframe64 t; }; #define CLKF_USERMODE(framep) (((framep)->t.tf_tstate & TSTATE_PRIV) == 0) #define CLKF_BASEPRI(framep) (((framep)->t.tf_oldpil) == 0) #define CLKF_PC(framep) ((framep)->t.tf_pc) #define CLKF_INTR(framep) ((!CLKF_USERMODE(framep))&&\ (((framep)->t.tf_kstack < (vaddr_t)EINTSTACK)&&\ ((framep)->t.tf_kstack > (vaddr_t)INTSTACK))) /* * Software interrupt request `register'. */ #ifdef DEPRECATED union sir { int sir_any; char sir_which[4]; } sir; #define SIR_NET 0 #define SIR_CLOCK 1 #endif extern struct intrhand soft01intr, soft01net, soft01clock; #if 0 #define setsoftint() send_softint(-1, IPL_SOFTINT, &soft01intr) #define setsoftnet() send_softint(-1, IPL_SOFTNET, &soft01net) #else void setsoftint __P((void)); void setsoftnet __P((void)); #endif int want_ast; /* * 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, want_ast = 1) /* * Give a profiling tick to the current process when the user profiling * buffer pages are invalid. On the sparc, 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, want_ast = 1) /* * Notify the current process (p) that it has a signal pending, * process as soon as possible. */ #define signotify(p) (want_ast = 1) /* * Only one process may own the FPU state. * * XXX this must be per-cpu (eventually) */ struct proc *fpproc; /* FPU owner */ int foundfpu; /* true => we have an FPU */ /* * Interrupt handler chains. Interrupt handlers should return 0 for * ``not me'' or 1 (``I took care of it''). intr_establish() inserts a * handler into the list. The handler is called with its (single) * argument, or with a pointer to a clockframe if ih_arg is NULL. */ struct intrhand { int (*ih_fun) __P((void *)); void *ih_arg; short ih_number; /* interrupt number */ /* the H/W provides */ char ih_pil; /* interrupt priority */ struct intrhand *ih_next; /* global list */ struct intrhand *ih_pending; /* interrupt queued */ volatile u_int64_t *ih_map; /* Interrupt map reg */ volatile u_int64_t *ih_clr; /* clear interrupt reg */ }; extern struct intrhand *intrhand[15]; extern struct intrhand *intrlev[MAXINTNUM]; void intr_establish __P((int level, struct intrhand *)); /* cpu.c */ paddr_t cpu_alloc __P((void)); u_int64_t cpu_init __P((paddr_t, int)); /* disksubr.c */ struct dkbad; int isbad __P((struct dkbad *bt, int, int, int)); /* machdep.c */ int ldcontrolb __P((caddr_t)); void dumpconf __P((void)); caddr_t reserve_dumppages __P((caddr_t)); /* clock.c */ struct timeval; int tickintr __P((void *)); /* level 10 (tick) interrupt code */ int clockintr __P((void *));/* level 10 (clock) interrupt code */ int statintr __P((void *)); /* level 14 (statclock) interrupt code */ /* locore.s */ struct fpstate64; void savefpstate __P((struct fpstate64 *)); void loadfpstate __P((struct fpstate64 *)); u_int64_t probeget __P((paddr_t, int, int)); int probeset __P((paddr_t, int, int, u_int64_t)); #if 0 void write_all_windows __P((void)); void write_user_windows __P((void)); #else #define write_all_windows() __asm __volatile("flushw" : : ) #define write_user_windows() __asm __volatile("flushw" : : ) #endif void proc_trampoline __P((void)); struct pcb; void snapshot __P((struct pcb *)); struct frame *getfp __P((void)); int xldcontrolb __P((caddr_t, struct pcb *)); void copywords __P((const void *, void *, size_t)); void qcopy __P((const void *, void *, size_t)); void qzero __P((void *, size_t)); void switchtoctx __P((int)); /* locore2.c */ void remrq __P((struct proc *)); /* trap.c */ void kill_user_windows __P((struct proc *)); int rwindow_save __P((struct proc *)); void child_return __P((struct proc *)); /* amd7930intr.s */ void amd7930_trap __P((void)); /* cons.c */ int cnrom __P((void)); /* zs.c */ void zsconsole __P((struct tty *, int, int, void (**)(struct tty *, int))); #ifdef KGDB void zs_kgdb_init __P((void)); #endif /* fb.c */ void fb_unblank __P((void)); /* kgdb_stub.c */ #ifdef KGDB void kgdb_attach __P((int (*)(void *), void (*)(void *, int), void *)); void kgdb_connect __P((int)); void kgdb_panic __P((void)); #endif /* emul.c */ int fixalign __P((struct proc *, struct trapframe64 *)); int emulinstr __P((vaddr_t, struct trapframe64 *)); /* * * The SPARC has a Trap Base Register (TBR) which holds the upper 20 bits * of the trap vector table. The next eight bits are supplied by the * hardware when the trap occurs, and the bottom four bits are always * zero (so that we can shove up to 16 bytes of executable code---exactly * four instructions---into each trap vector). * * The hardware allocates half the trap vectors to hardware and half to * software. * * Traps have priorities assigned (lower number => higher priority). */ struct trapvec { int tv_instr[8]; /* the eight instructions */ }; extern struct trapvec *trapbase; /* the 256 vectors */ extern void wzero __P((void *, u_int)); extern void wcopy __P((const void *, void *, u_int)); #endif /* _KERNEL */ #endif /* _CPU_H_ */