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/* $OpenBSD: cpu.h,v 1.38 2008/10/15 23:23:48 deraadt Exp $ */
/*
* Copyright (c) 1996 Nivas Madhur
* 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. 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.
*/
#ifndef __M88K_CPU_H__
#define __M88K_CPU_H__
/*
* CTL_MACHDEP definitions.
*/
#define CPU_CONSDEV 1 /* dev_t: console terminal device */
#define CPU_CPUTYPE 2 /* int: cpu type */
#define CPU_MAXID 3 /* number of valid machdep ids */
#define CTL_MACHDEP_NAMES { \
{ 0, 0 }, \
{ "console_device", CTLTYPE_STRUCT }, \
{ "cputype", CTLTYPE_INT }, \
}
#ifdef _KERNEL
#include <machine/atomic.h>
#include <machine/pcb.h>
#include <machine/psl.h>
#include <machine/intr.h>
#include <sys/queue.h>
#include <sys/sched.h>
#if defined(MULTIPROCESSOR)
#if !defined(MAX_CPUS) || MAX_CPUS > 4
#undef MAX_CPUS
#define MAX_CPUS 4
#endif
#else
#if !defined(MAX_CPUS)
#undef MAX_CPUS
#define MAX_CPUS 1
#endif
#endif
#ifndef _LOCORE
extern u_int max_cpus;
/*
* Per-CPU data structure
*/
struct cpu_info {
u_int ci_flags;
#define CIF_ALIVE 0x01 /* cpu initialized */
#define CIF_PRIMARY 0x02 /* primary cpu */
struct proc *ci_curproc; /* current process... */
struct pcb *ci_curpcb; /* ...and its pcb */
u_int ci_cpuid; /* cpu number */
u_int ci_pfsr_i0, ci_pfsr_i1; /* instruction... */
u_int ci_pfsr_d0, ci_pfsr_d1; /* ... and data CMMU PFSRs */
struct schedstate_percpu ci_schedstate; /* scheduling state */
int ci_want_resched; /* need_resched() invoked */
u_int ci_intrdepth; /* interrupt depth */
u_long ci_spin_locks; /* spin locks counter */
int ci_ddb_state; /* ddb status */
#define CI_DDB_RUNNING 0
#define CI_DDB_ENTERDDB 1
#define CI_DDB_INDDB 2
#define CI_DDB_PAUSE 3
int ci_softintr; /* pending soft interrupts */
u_int32_t ci_randseed;
#ifdef MULTIPROCESSOR
int ci_ipi; /* pending ipis */
#define CI_IPI_NOTIFY 0x00000001
#define CI_IPI_HARDCLOCK 0x00000002
#define CI_IPI_STATCLOCK 0x00000004
#define CI_IPI_DDB 0x00000008
#define CI_IPI_TLB_FLUSH_KERNEL 0x00000010
#define CI_IPI_TLB_FLUSH_USER 0x00000020
#define CI_IPI_CACHE_FLUSH 0x00000040
#define CI_IPI_ICACHE_FLUSH 0x00000080
u_int32_t ci_ipi_arg1;
u_int32_t ci_ipi_arg2;
#endif
};
extern cpuid_t master_cpu;
extern struct cpu_info m88k_cpus[MAX_CPUS];
#define CPU_INFO_ITERATOR cpuid_t
#define CPU_INFO_FOREACH(cii, ci) \
for ((cii) = 0; (cii) < MAX_CPUS; (cii)++) \
if (((ci) = &m88k_cpus[cii])->ci_flags & CIF_ALIVE)
#define CPU_INFO_UNIT(ci) ((ci)->ci_cpuid)
#define MAXCPUS MAX_CPUS
#define cpu_unidle(ci)
#if defined(MULTIPROCESSOR)
static __inline__ struct cpu_info *
curcpu(void)
{
struct cpu_info *cpuptr;
__asm__ __volatile__ ("ldcr %0, cr17" : "=r" (cpuptr));
return cpuptr;
}
#define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CIF_PRIMARY)
void cpu_boot_secondary_processors(void);
__dead void cpu_emergency_disable(void);
void m88k_send_ipi(int, cpuid_t);
void m88k_broadcast_ipi(int);
#else /* MULTIPROCESSOR */
#define curcpu() (&m88k_cpus[0])
#define CPU_IS_PRIMARY(ci) 1
#endif /* MULTIPROCESSOR */
void set_cpu_number(cpuid_t);
/*
* The md code may hardcode this in some very specific situations.
*/
#if !defined(cpu_number)
#define cpu_number() curcpu()->ci_cpuid
#endif
#define curpcb curcpu()->ci_curpcb
#endif /* _LOCORE */
/*
* definitions of cpu-dependent requirements
* referenced in generic code
*/
#define cpu_exec(p) do { /* nothing */ } while (0)
#define cpu_wait(p) do { /* nothing */ } while (0)
#define cpu_idle_enter() do { /* nothing */ } while (0)
#define cpu_idle_cycle() do { /* nothing */ } while (0)
#define cpu_idle_leave() do { /* nothing */ } while (0)
#if defined(MULTIPROCESSOR)
#include <sys/lock.h>
#include <sys/mplock.h>
#endif
/*
* Arguments to hardclock and gatherstats encapsulate the previous
* machine state in an opaque clockframe. CLKF_INTR is only valid
* if the process is in kernel mode. Clockframe is really trapframe,
* so pointer to clockframe can be safely cast into a pointer to
* trapframe.
*/
struct clockframe {
struct trapframe tf;
};
#define CLKF_USERMODE(framep) (((framep)->tf.tf_epsr & PSR_MODE) == 0)
#define CLKF_PC(framep) ((framep)->tf.tf_sxip & XIP_ADDR)
#define CLKF_INTR(framep) \
(((struct cpu_info *)(framep)->tf.tf_cpu)->ci_intrdepth > 1)
/*
* Get interrupt glue.
*/
#include <machine/intr.h>
#define SIR_NET 0x01
#define SIR_CLOCK 0x02
#define setsoftint(x) atomic_setbits_int(&curcpu()->ci_softintr, x)
#define setsoftnet() setsoftint(SIR_NET)
#define setsoftclock() setsoftint(SIR_CLOCK)
#define aston(p) ((p)->p_md.md_astpending = 1)
/*
* This is used during profiling to integrate system time.
*/
#define PC_REGS(regs) \
(CPU_IS88110 ? ((regs)->exip & XIP_ADDR) : \
((regs)->sxip & XIP_V ? (regs)->sxip & XIP_ADDR : \
((regs)->snip & NIP_V ? (regs)->snip & NIP_ADDR : \
(regs)->sfip & FIP_ADDR)))
#define PROC_PC(p) PC_REGS((struct reg *)((p)->p_md.md_tf))
/*
* Preempt the current process if in interrupt from user mode,
* or after the current trap/syscall if in system mode.
*/
#define need_resched(ci) \
do { \
ci->ci_want_resched = 1; \
if (ci->ci_curproc != NULL) \
aston(ci->ci_curproc); \
} while (0)
#define clear_resched(ci) (ci)->ci_want_resched = 0
/*
* Give a profiling tick to the current process when the user profiling
* buffer pages are invalid. On the m88k, request an ast to send us
* through trap(), marking the proc as needing a profiling tick.
*/
#define need_proftick(p) aston(p)
void signotify(struct proc *);
int badaddr(vaddr_t addr, int size);
#endif /* _KERNEL */
#endif /* __M88K_CPU_H__ */
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