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/* $OpenBSD: cpu.h,v 1.8 1998/06/04 03:49:48 jason Exp $ */
/* $NetBSD: cpu.h,v 1.15 1996/03/23 20:28:19 jonathan Exp $ */
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell and Rick Macklem.
*
* 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) 1/4/94
*/
#ifndef _CPU_H_
#define _CPU_H_
#include <machine/machConst.h>
/*
* Exported definitions unique to OpenBSD/mips cpu support.
*/
/*
* Macros to find the CPU architecture we're on at run-time,
* or if possible, at compile-time.
*/
#if (MIPS1 + MIPS3) == 1
#ifdef MIPS1
# define CPUISMIPS3 0
#endif /* mips1 */
#ifdef MIPS3
# define CPUISMIPS3 1
#endif /* mips1 */
#else /* run-time test */
extern int cpu_arch;
#define CPUISMIPS3 (cpu_arch == 3)
#endif /* run-time test */
/*
* definitions of cpu-dependent requirements
* referenced in generic code
*/
#define cpu_wait(p) /* nothing */
#define cpu_set_init_frame(p, fp) /* nothing */
#define cpu_swapout(p) panic("cpu_swapout: can't get here");
/*
* Arguments to hardclock and gatherstats encapsulate the previous
* machine state in an opaque clockframe.
*/
struct clockframe {
int pc; /* program counter at time of interrupt */
int sr; /* status register at time of interrupt */
};
/*
* A port must provde CLKF_USERMODE() and CLKF_BASEPRI() for use
* in machine-independent code. These differ on r4000 and r3000 systems;
* provide them in the port-dependent file that includes this one, using
* the macros below.
*/
/* r3000 versions */
#define CLKF_USERMODE_R3K(framep) ((framep)->sr & MIPS_SR_KU_PREV)
#define CLKF_BASEPRI_R3K(framep) \
((~(framep)->sr & (MIPS_INT_MASK | MIPS_SR_INT_ENA_PREV)) == 0)
/* r4000 versions */
#define CLKF_USERMODE_R4K(framep) ((framep)->sr & MIPS_SR_KSU_USER)
#define CLKF_BASEPRI_R4K(framep) \
((~(framep)->sr & (MIPS_INT_MASK | MIPS_SR_INT_ENAB)) == 0)
#define CLKF_PC(framep) ((framep)->pc)
#define CLKF_INTR(framep) (0)
/*
* Preempt the current process if in interrupt from user mode,
* or after the current trap/syscall if in system mode.
*/
#define need_resched() { want_resched = 1; aston(); }
/*
* Give a profiling tick to the current process when the user profiling
* buffer pages are invalid. On the MIPS, 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()
#define aston() (astpending = 1)
int astpending; /* need to trap before returning to user mode */
int want_resched; /* resched() was called */
/*
* CPU identification, from PRID register.
*/
union cpuprid {
int cpuprid;
struct {
#if BYTE_ORDER == BIG_ENDIAN
u_int pad1:16; /* reserved */
u_int cp_imp:8; /* implementation identifier */
u_int cp_majrev:4; /* major revision identifier */
u_int cp_minrev:4; /* minor revision identifier */
#else
u_int cp_minrev:4; /* minor revision identifier */
u_int cp_majrev:4; /* major revision identifier */
u_int cp_imp:8; /* implementation identifier */
u_int pad1:16; /* reserved */
#endif
} cpu;
};
/*
* CTL_MACHDEP definitions.
*/
#define CPU_CONSDEV 1 /* dev_t: console terminal device */
#define CPU_LED_BLINK 2
#define CPU_MAXID 3 /* number of valid machdep ids */
#define CTL_MACHDEP_NAMES { \
{ 0, 0 }, \
{ "console_device", CTLTYPE_STRUCT }, \
{ "led_blink", CTLTYPE_INT }, \
}
/*
* MIPS CPU types (cp_imp).
*/
#define MIPS_R2000 0x01 /* MIPS R2000 CPU ISA I */
#define MIPS_R3000 0x02 /* MIPS R3000 CPU ISA I */
#define MIPS_R6000 0x03 /* MIPS R6000 CPU ISA II */
#define MIPS_R4000 0x04 /* MIPS R4000/4400 CPU ISA III */
#define MIPS_R3LSI 0x05 /* LSI Logic R3000 derivate ISA I */
#define MIPS_R6000A 0x06 /* MIPS R6000A CPU ISA II */
#define MIPS_R3IDT 0x07 /* IDT R3000 derivate ISA I */
#define MIPS_R10000 0x09 /* MIPS R10000/T5 CPU ISA IV */
#define MIPS_R4200 0x0a /* MIPS R4200 CPU (ICE) ISA III */
#define MIPS_UNKC1 0x0b /* unnanounced product cpu ISA III */
#define MIPS_UNKC2 0x0c /* unnanounced product cpu ISA III */
#define MIPS_R8000 0x10 /* MIPS R8000 Blackbird/TFP ISA IV */
#define MIPS_R4600 0x20 /* QED R4600 Orion ISA III */
#define MIPS_R3SONY 0x21 /* Sony R3000 based CPU ISA I */
#define MIPS_R3TOSH 0x22 /* Toshiba R3000 based CPU ISA I */
#define MIPS_R3NKK 0x23 /* NKK R3000 based CPU ISA I */
/*
* MIPS FPU types
*/
#define MIPS_SOFT 0x00 /* Software emulation ISA I */
#define MIPS_R2360 0x01 /* MIPS R2360 FPC ISA I */
#define MIPS_R2010 0x02 /* MIPS R2010 FPC ISA I */
#define MIPS_R3010 0x03 /* MIPS R3010 FPC ISA I */
#define MIPS_R6010 0x04 /* MIPS R6010 FPC ISA II */
#define MIPS_R4010 0x05 /* MIPS R4000/R4400 FPC ISA II */
#define MIPS_R31LSI 0x06 /* LSI Logic derivate ISA I */
#define MIPS_R10010 0x09 /* MIPS R10000/T5 FPU ISA IV */
#define MIPS_R4210 0x0a /* MIPS R4200 FPC (ICE) ISA III */
#define MIPS_UNKF1 0x0b /* unnanounced product cpu ISA III */
#define MIPS_R8000 0x10 /* MIPS R8000 Blackbird/TFP ISA IV */
#define MIPS_R4600 0x20 /* QED R4600 Orion ISA III */
#define MIPS_R3SONY 0x21 /* Sony R3000 based FPU ISA I */
#define MIPS_R3TOSH 0x22 /* Toshiba R3000 based FPU ISA I */
#define MIPS_R3NKK 0x23 /* NKK R3000 based FPU ISA I */
/*
* XXX port-dependent code should define cpu_id and fpu_id variables
* and machine-dependent cache descriptor variables.
*/
/*
* Enable realtime clock (always enabled).
*/
#define enablertclock()
/* Stuff from the NetBSD mips tree TTTTT */
#define CLKF_USERMODE(framep) CLKF_USERMODE_R3K(framep)
#define CLKF_BASEPRI(framep) CLKF_BASEPRI_R3K(framep)
#ifdef _KERNEL
union cpuprid cpu_id;
union cpuprid fpu_id;
u_int machDataCacheSize;
u_int machInstCacheSize;
extern struct intr_tab intr_tab[];
#endif
/* End of stuff from the NetBSD mips tree TTTTT */
#endif /* _CPU_H_ */
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