381 lines
11 KiB
C
381 lines
11 KiB
C
/* $NetBSD: cpu.h,v 1.42 2004/01/06 09:38:19 petrov Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)cpu.h 8.4 (Berkeley) 1/5/94
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*/
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#ifndef _CPU_H_
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#define _CPU_H_
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/*
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* CTL_MACHDEP definitions.
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*/
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#define CPU_BOOTED_KERNEL 1 /* string: booted kernel name */
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#define CPU_BOOTED_DEVICE 2 /* string: device booted from */
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#define CPU_BOOT_ARGS 3 /* string: args booted with */
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#define CPU_ARCH 4 /* integer: cpu architecture version */
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#define CPU_MAXID 5 /* number of valid machdep ids */
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#define CTL_MACHDEP_NAMES { \
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{ 0, 0 }, \
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{ "booted_kernel", CTLTYPE_STRING }, \
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{ "booted_device", CTLTYPE_STRING }, \
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{ "boot_args", CTLTYPE_STRING }, \
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{ "cpu_arch", CTLTYPE_INT }, \
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}
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#ifdef _KERNEL
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/*
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* Exported definitions unique to SPARC cpu support.
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*/
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#if defined(_KERNEL_OPT)
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#include "opt_multiprocessor.h"
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#include "opt_lockdebug.h"
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#endif
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#include <machine/psl.h>
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#include <machine/reg.h>
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#include <machine/intr.h>
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#include <sparc64/sparc64/intreg.h>
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#include <sys/sched.h>
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/*
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* The cpu_info structure is part of a 64KB structure mapped both the kernel
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* pmap and a single locked TTE a CPUINFO_VA for that particular processor.
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* Each processor's cpu_info is accessible at CPUINFO_VA only for that
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* processor. Other processors can access that through an additional mapping
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* in the kernel pmap.
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*
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* The 64KB page contains:
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*
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* cpu_info
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* interrupt stack (all remaining space)
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* idle PCB
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* idle stack (STACKSPACE - sizeof(PCB))
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* 32KB TSB
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*/
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struct cpu_info {
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/*
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* SPARC cpu_info structures live at two VAs: one global
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* VA (so each CPU can access any other CPU's cpu_info)
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* and an alias VA CPUINFO_VA which is the same on each
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* CPU and maps to that CPU's cpu_info. Since the alias
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* CPUINFO_VA is how we locate our cpu_info, we have to
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* self-reference the global VA so that we can return it
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* in the curcpu() macro.
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*/
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struct cpu_info * __volatile ci_self;
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/* Most important fields first */
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struct lwp *ci_curlwp;
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struct pcb *ci_cpcb;
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struct cpu_info *ci_next;
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struct lwp *ci_fplwp;
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int ci_number;
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int ci_upaid;
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int ci_cpuid;
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struct schedstate_percpu ci_schedstate;
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/*
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* Variables used by cc_microtime().
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*/
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struct timeval ci_cc_time;
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int64_t ci_cc_cc;
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int64_t ci_cc_ms_delta;
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int64_t ci_cc_denom;
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/* DEBUG/DIAGNOSTIC stuff */
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u_long ci_spin_locks;
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u_long ci_simple_locks;
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/* Spinning up the CPU */
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void (*ci_spinup) __P((void));
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void *ci_initstack;
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paddr_t ci_paddr;
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/* CPU PROM information. */
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u_int ci_node;
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int ci_flags;
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int ci_want_ast;
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int ci_want_resched;
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void *ci_eintstack;
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struct pcb *ci_idle_u;
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};
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#define CPUF_PRIMARY 1
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/*
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* CPU boot arguments. Used by secondary CPUs at the bootstrap time.
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*/
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struct cpu_bootargs {
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u_int cb_node; /* PROM CPU node */
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__volatile int cb_flags;
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vaddr_t cb_ktext;
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paddr_t cb_ktextp;
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vaddr_t cb_ektext;
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vaddr_t cb_kdata;
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paddr_t cb_kdatap;
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vaddr_t cb_ekdata;
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paddr_t cb_cpuinfo;
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void *cb_initstack;
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};
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extern struct cpu_bootargs *cpu_args;
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extern int ncpus;
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extern struct cpu_info *cpus;
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#define curcpu() ((struct cpu_info *)CPUINFO_VA)
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#define cpu_number() (curcpu()->ci_number)
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#define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY)
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#define curlwp curcpu()->ci_curlwp
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#define fplwp curcpu()->ci_fplwp
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#define curpcb curcpu()->ci_cpcb
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#define want_ast curcpu()->ci_want_ast
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#define want_resched curcpu()->ci_want_resched
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/*
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* definitions of cpu-dependent requirements
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* referenced in generic code
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*/
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#define cpu_swapin(p) /* nothing */
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#define cpu_swapout(p) /* nothing */
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#define cpu_wait(p) /* nothing */
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/* This really should be somewhere else. */
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#define cpu_proc_fork(p1, p2) /* nothing */
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#if defined(MULTIPROCESSOR)
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void cpu_mp_startup __P((void));
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void cpu_boot_secondary_processors __P((void));
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#endif
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/*
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* definitions for MI microtime().
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*/
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extern struct timeval cc_microset_time;
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#define microtime(tv) cc_microtime(tv)
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void cc_microtime __P((struct timeval *));
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void cc_microset __P((struct cpu_info *));
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extern uint64_t cpu_clockrate[];
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/*
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* Arguments to hardclock, softclock and gatherstats encapsulate the
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* previous machine state in an opaque clockframe. The ipl is here
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* as well for strayintr (see locore.s:interrupt and intr.c:strayintr).
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* Note that CLKF_INTR is valid only if CLKF_USERMODE is false.
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*/
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extern int intstack[];
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extern int eintstack[];
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struct clockframe {
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struct trapframe64 t;
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};
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#define CLKF_USERMODE(framep) (((framep)->t.tf_tstate & TSTATE_PRIV) == 0)
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/*
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* XXX Disable CLKF_BASEPRI() for now. If we use a counter-timer for
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* the clock, the interrupt remains blocked until the interrupt handler
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* returns and we write to the clear interrupt register. If we use
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* %tick for the clock, we could get multiple interrupts, but the
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* currently enabled INTR_INTERLOCK will prevent the interrupt from being
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* posted twice anyway.
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*
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* Switching to %tick for all machines and disabling INTR_INTERLOCK
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* in locore.s would allow us to take advantage of CLKF_BASEPRI().
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*/
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#if 0
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#define CLKF_BASEPRI(framep) (((framep)->t.tf_oldpil) == 0)
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#else
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#define CLKF_BASEPRI(framep) (0)
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#endif
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#define CLKF_PC(framep) ((framep)->t.tf_pc)
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/* Since some files in sys/kern do not know BIAS, I'm using 0x7ff here */
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#define CLKF_INTR(framep) \
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((!CLKF_USERMODE(framep))&& \
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(((framep)->t.tf_out[6] & 1 ) ? \
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(((vaddr_t)(framep)->t.tf_out[6] < \
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(vaddr_t)EINTSTACK-0x7ff) && \
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((vaddr_t)(framep)->t.tf_out[6] > \
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(vaddr_t)INTSTACK-0x7ff)) : \
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(((vaddr_t)(framep)->t.tf_out[6] < \
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(vaddr_t)EINTSTACK) && \
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((vaddr_t)(framep)->t.tf_out[6] > \
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(vaddr_t)INTSTACK))))
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extern struct intrhand soft01intr, soft01net, soft01clock;
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void setsoftint __P((void));
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void setsoftnet __P((void));
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/*
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* Preempt the current process if in interrupt from user mode,
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* or after the current trap/syscall if in system mode.
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*/
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#define need_resched(ci) (want_resched = 1, want_ast = 1)
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/*
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* Give a profiling tick to the current process when the user profiling
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* buffer pages are invalid. On the sparc, request an ast to send us
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* through trap(), marking the proc as needing a profiling tick.
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*/
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#define need_proftick(p) ((p)->p_flag |= P_OWEUPC, want_ast = 1)
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/*
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* Notify the current process (p) that it has a signal pending,
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* process as soon as possible.
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*/
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#define signotify(p) (want_ast = 1)
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/*
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* Interrupt handler chains. Interrupt handlers should return 0 for
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* ``not me'' or 1 (``I took care of it''). intr_establish() inserts a
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* handler into the list. The handler is called with its (single)
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* argument, or with a pointer to a clockframe if ih_arg is NULL.
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*/
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struct intrhand {
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int (*ih_fun) __P((void *));
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void *ih_arg;
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short ih_number; /* interrupt number */
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/* the H/W provides */
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char ih_pil; /* interrupt priority */
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struct intrhand *ih_next; /* global list */
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struct intrhand *ih_pending; /* interrupt queued */
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volatile u_int64_t *ih_map; /* Interrupt map reg */
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volatile u_int64_t *ih_clr; /* clear interrupt reg */
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};
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extern struct intrhand *intrhand[];
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extern struct intrhand *intrlev[MAXINTNUM];
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void intr_establish __P((int level, struct intrhand *));
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/* cpu.c */
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paddr_t cpu_alloc __P((void));
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void cpu_start __P((int));
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/* disksubr.c */
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struct dkbad;
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int isbad __P((struct dkbad *bt, int, int, int));
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/* machdep.c */
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int ldcontrolb __P((caddr_t));
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void dumpconf __P((void));
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caddr_t reserve_dumppages __P((caddr_t));
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/* clock.c */
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struct timeval;
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int tickintr __P((void *)); /* level 10 (tick) interrupt code */
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int clockintr __P((void *));/* level 10 (clock) interrupt code */
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int statintr __P((void *)); /* level 14 (statclock) interrupt code */
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/* locore.s */
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struct fpstate64;
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void savefpstate __P((struct fpstate64 *));
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void loadfpstate __P((struct fpstate64 *));
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u_int64_t probeget __P((paddr_t, int, int));
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int probeset __P((paddr_t, int, int, u_int64_t));
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#define write_all_windows() __asm __volatile("flushw" : : )
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#define write_user_windows() __asm __volatile("flushw" : : )
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void proc_trampoline __P((void));
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struct pcb;
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void snapshot __P((struct pcb *));
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struct frame *getfp __P((void));
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int xldcontrolb __P((caddr_t, struct pcb *));
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void copywords __P((const void *, void *, size_t));
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void qcopy __P((const void *, void *, size_t));
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void qzero __P((void *, size_t));
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void switchtoctx __P((int));
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/* locore2.c */
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void remrq __P((struct proc *));
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/* trap.c */
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void kill_user_windows __P((struct lwp *));
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int rwindow_save __P((struct lwp *));
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/* cons.c */
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int cnrom __P((void));
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/* zs.c */
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void zsconsole __P((struct tty *, int, int, void (**)(struct tty *, int)));
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#ifdef KGDB
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void zs_kgdb_init __P((void));
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#endif
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/* fb.c */
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void fb_unblank __P((void));
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/* kgdb_stub.c */
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#ifdef KGDB
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void kgdb_attach __P((int (*)(void *), void (*)(void *, int), void *));
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void kgdb_connect __P((int));
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void kgdb_panic __P((void));
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#endif
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/* emul.c */
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int fixalign __P((struct lwp *, struct trapframe64 *));
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int emulinstr __P((vaddr_t, struct trapframe64 *));
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/*
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*
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* The SPARC has a Trap Base Register (TBR) which holds the upper 20 bits
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* of the trap vector table. The next eight bits are supplied by the
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* hardware when the trap occurs, and the bottom four bits are always
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* zero (so that we can shove up to 16 bytes of executable code---exactly
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* four instructions---into each trap vector).
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*
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* The hardware allocates half the trap vectors to hardware and half to
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* software.
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*
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* Traps have priorities assigned (lower number => higher priority).
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*/
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struct trapvec {
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int tv_instr[8]; /* the eight instructions */
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};
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extern struct trapvec *trapbase; /* the 256 vectors */
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#endif /* _KERNEL */
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#endif /* _CPU_H_ */
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