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/* $OpenBSD: cpu.h,v 1.25 2005/01/08 22:13:54 miod Exp $ */
/* $NetBSD: cpu.h,v 1.28 1998/02/13 07:41:51 scottr Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1982, 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* 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.
*
* from: Utah $Hdr: cpu.h 1.16 91/03/25$
*
* @(#)cpu.h 8.4 (Berkeley) 1/5/94
*/
#ifndef _HP300_CPU_H_
#define _HP300_CPU_H_
/*
* Exported definitions unique to hp300/68k cpu support.
*/
/*
* Get common m68k CPU definitions.
*/
#include <m68k/cpu.h>
/*
* Get interrupt glue.
*/
#include <machine/intr.h>
/*
* definitions of cpu-dependent requirements
* referenced in generic code
*/
#define cpu_swapin(p) /* nothing */
#define cpu_wait(p) /* nothing */
#define cpu_swapout(p) /* nothing */
/*
* Arguments to hardclock and gatherstats encapsulate the previous
* machine state in an opaque clockframe. One the hp300, we use
* what the hardware pushes on an interrupt (frame format 0).
*/
struct clockframe {
u_short sr; /* sr at time of interrupt */
u_long pc; /* pc at time of interrupt */
u_short vo; /* vector offset (4-word frame) */
};
#define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0)
#define CLKF_PC(framep) ((framep)->pc)
#if 0
/* We would like to do it this way... */
#define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0)
#else
/* but until we start using PSL_M, we have to do this instead */
#define CLKF_INTR(framep) (0) /* XXX */
#endif
/*
* Preempt the current process if in interrupt from user mode,
* or after the current trap/syscall if in system mode.
*/
extern int want_resched; /* resched() was called */
#define need_resched(ci) { want_resched++; aston(); }
/*
* Give a profiling tick to the current process when the user profiling
* buffer pages are invalid. On the hp300, 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; aston(); }
/*
* Notify the current process (p) that it has a signal pending,
* process as soon as possible.
*/
#define signotify(p) aston()
extern int astpending; /* need to trap before returning to user mode */
#define aston() (astpending++)
/*
* CTL_MACHDEP definitions.
*/
#define CPU_CONSDEV 1 /* dev_t: console terminal device */
#define CPU_CPUSPEED 2 /* CPU speed in MHz */
#define CPU_MACHINEID 3 /* machine id (HP_XXX) */
#define CPU_MMUID 4 /* mmu id (MMUID_*) */
#define CPU_MAXID 5 /* number of valid machdep ids */
#define CTL_MACHDEP_NAMES { \
{ 0, 0 }, \
{ "console_device", CTLTYPE_STRUCT }, \
{ "cpuspeed", CTLTYPE_INT }, \
{ "machineid", CTLTYPE_INT }, \
{ "mmuid", CTLTYPE_INT }, \
}
/*
* The rest of this should probably be moved to <machine/hp300spu.h>,
* although some of it could probably be put into generic 68k headers.
*/
#ifdef _KERNEL
extern char *intiobase, *intiolimit;
extern void (*vectab[])(void);
struct frame;
struct fpframe;
struct pcb;
/* locore.s functions */
void m68881_save(struct fpframe *);
void m68881_restore(struct fpframe *);
void DCIA(void);
void DCIS(void);
void DCIU(void);
void ICIA(void);
void ICPA(void);
void PCIA(void);
void TBIA(void);
void TBIS(vaddr_t);
void TBIAS(void);
void TBIAU(void);
#if defined(M68040)
void DCFA(void);
void DCFP(paddr_t);
void DCFL(paddr_t);
void DCPL(paddr_t);
void DCPP(paddr_t);
void ICPL(paddr_t);
void ICPP(paddr_t);
#endif
int suline(caddr_t, caddr_t);
void savectx(struct pcb *);
void switch_exit(struct proc *);
void proc_trampoline(void);
void loadustp(int);
__dead void doboot(void);
void ecacheon(void);
void ecacheoff(void);
/* clock.c functions */
void hp300_calibrate_delay(void);
/* machdep.c functions */
int badaddr(caddr_t);
int badbaddr(caddr_t);
void dumpconf(void);
/* sys_machdep.c functions */
int cachectl(struct proc *, int, vaddr_t, int);
/* vm_machdep.c functions */
void physaccess(caddr_t, caddr_t, int, int);
void physunaccess(caddr_t, int);
int kvtop(caddr_t);
/* what is this supposed to do? i.e. how is it different than startrtclock? */
#define enablertclock()
#endif /* _KERNEL */
/* physical memory sections */
#define ROMBASE (0x00000000)
#define INTIOBASE (0x00400000)
#define INTIOTOP (0x00600000)
#define EXTIOBASE (0x00600000)
#define EXTIOTOP (0x20000000)
#define MAXADDR (0xFFFFF000)
/*
* Internal IO space:
*
* Ranges from 0x400000 to 0x600000 (IIOMAPSIZE).
*
* Internal IO space is mapped in the kernel from ``intiobase'' to
* ``intiolimit'' (defined in locore.s). Since it is always mapped,
* conversion between physical and kernel virtual addresses is easy.
*/
#define ISIIOVA(va) \
((char *)(va) >= intiobase && (char *)(va) < intiolimit)
#define IIOV(pa) ((int)(pa)-INTIOBASE+(int)intiobase)
#define IIOP(va) ((int)(va)-(int)intiobase+INTIOBASE)
#define IIOPOFF(pa) ((int)(pa)-INTIOBASE)
#define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 2mb */
/*
* HP MMU
*/
#define MMUBASE IIOPOFF(0x5F4000)
#define MMUSSTP 0x0
#define MMUUSTP 0x4
#define MMUTBINVAL 0x8
#define MMUSTAT 0xC
#define MMUCMD MMUSTAT
#define MMU_UMEN 0x0001 /* enable user mapping */
#define MMU_SMEN 0x0002 /* enable supervisor mapping */
#define MMU_CEN 0x0004 /* enable data cache */
#define MMU_BERR 0x0008 /* bus error */
#define MMU_IEN 0x0020 /* enable instruction cache */
#define MMU_FPE 0x0040 /* enable 68881 FP coprocessor */
#define MMU_WPF 0x2000 /* write protect fault */
#define MMU_PF 0x4000 /* page fault */
#define MMU_PTF 0x8000 /* page table fault */
#define MMU_FAULT (MMU_PTF|MMU_PF|MMU_WPF|MMU_BERR)
#define MMU_ENAB (MMU_UMEN|MMU_SMEN|MMU_IEN|MMU_FPE)
#endif /* _HP300_CPU_H_ */
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