/* $NetBSD: cpu.h,v 1.16 2018/08/22 01:05:22 msaitoh 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 _M68K_CPU_H_
#define _M68K_CPU_H_
/*
* Exported definitions common to Motorola m68k-based ports.
*
* Note that are some port-specific definitions here, such as
* HP and Sun MMU types. These facilitate adding very small
* amounts of port-specific code to what would otherwise be
* identical. The is especially true in the case of the HP
* and other m68k pmaps.
*
* Individual ports are expected to define the following CPP symbols
* in <machine/cpu.h> to enable conditional code:
*
* M68K_MMU_MOTOROLA Machine has a Motorola MMU (incl.
* 68851, 68030, 68040, 68060)
*
* M68K_MMU_HP Machine has an HP MMU.
*
* Note also that while m68k-generic code conditionalizes on the
* M68K_MMU_HP CPP symbol, none of the HP MMU definitions are in this
* file (since none are used in otherwise sharable code).
*/
/*
* XXX The remaining contents of this file should be split out
* XXX into separate files (like m68k.h) and then this file
* XXX should go away. Furthermore, most of the stuff defined
* XXX here does NOT belong in <machine/cpu.h>, and the ports
* XXX using this file should remove <m68k/cpu.h> from there.
*/
#include <m68k/m68k.h>
/* XXX - Move this stuff into <m68k/mmu030.h> maybe? */
/*
* 68851 and 68030 MMU
*/
#define PMMU_LVLMASK 0x0007
#define PMMU_INV 0x0400
#define PMMU_WP 0x0800
#define PMMU_ALV 0x1000
#define PMMU_SO 0x2000
#define PMMU_LV 0x4000
#define PMMU_BE 0x8000
#define PMMU_FAULT (PMMU_WP|PMMU_INV)
/* XXX - Move this stuff into <m68k/mmu040.h> maybe? */
/*
* 68040 MMU
*/
#define MMU40_RES 0x001
#define MMU40_TTR 0x002
#define MMU40_WP 0x004
#define MMU40_MOD 0x010
#define MMU40_CMMASK 0x060
#define MMU40_SUP 0x080
#define MMU40_U0 0x100
#define MMU40_U1 0x200
#define MMU40_GLB 0x400
#define MMU40_BE 0x800
/* XXX - Move this stuff into <m68k/fcode.h> maybe? */
/* 680X0 function codes */
#define FC_USERD 1 /* user data space */
#define FC_USERP 2 /* user program space */
#define FC_PURGE 3 /* HPMMU: clear TLB entries */
#define FC_SUPERD 5 /* supervisor data space */
#define FC_SUPERP 6 /* supervisor program space */
#define FC_CPU 7 /* CPU space */
/* XXX - Move this stuff into <m68k/cacr.h> maybe? */
/* fields in the 68020 cache control register */
#define IC_ENABLE 0x0001 /* enable instruction cache */
#define IC_FREEZE 0x0002 /* freeze instruction cache */
#define IC_CE 0x0004 /* clear instruction cache entry */
#define IC_CLR 0x0008 /* clear entire instruction cache */
/* additional fields in the 68030 cache control register */
#define IC_BE 0x0010 /* instruction burst enable */
#define DC_ENABLE 0x0100 /* data cache enable */
#define DC_FREEZE 0x0200 /* data cache freeze */
#define DC_CE 0x0400 /* clear data cache entry */
#define DC_CLR 0x0800 /* clear entire data cache */
#define DC_BE 0x1000 /* data burst enable */
#define DC_WA 0x2000 /* write allocate */
/* fields in the 68040 cache control register */
#define IC40_ENABLE 0x00008000 /* instruction cache enable bit */
#define DC40_ENABLE 0x80000000 /* data cache enable bit */
/* additional fields in the 68060 cache control register */
#define DC60_NAD 0x40000000 /* no allocate mode, data cache */
#define DC60_ESB 0x20000000 /* enable store buffer */
#define DC60_DPI 0x10000000 /* disable CPUSH invalidation */
#define DC60_FOC 0x08000000 /* four kB data cache mode (else 8) */
#define IC60_EBC 0x00800000 /* enable branch cache */
#define IC60_CABC 0x00400000 /* clear all branch cache entries */
#define IC60_CUBC 0x00200000 /* clear user branch cache entries */
#define IC60_NAI 0x00004000 /* no allocate mode, instr. cache */
#define IC60_FIC 0x00002000 /* four kB instr. cache (else 8) */
#define CACHE_ON (DC_WA|DC_BE|DC_CLR|DC_ENABLE|IC_BE|IC_CLR|IC_ENABLE)
#define CACHE_OFF (DC_CLR|IC_CLR)
#define CACHE_CLR (CACHE_ON)
#define IC_CLEAR (DC_WA|DC_BE|DC_ENABLE|IC_BE|IC_CLR|IC_ENABLE)
#define DC_CLEAR (DC_WA|DC_BE|DC_CLR|DC_ENABLE|IC_BE|IC_ENABLE)
#define CACHE40_ON (IC40_ENABLE|DC40_ENABLE)
#define CACHE40_OFF (0x00000000)
#define CACHE60_ON (CACHE40_ON|IC60_CABC|IC60_EBC|DC60_ESB)
#define CACHE60_OFF (CACHE40_OFF|IC60_CABC)
#define CACHELINE_SIZE 16
#define CACHELINE_MASK (CACHELINE_SIZE - 1)
/* CTL_MACHDEP definitions. (Common to all m68k ports.) */
#define CPU_CONSDEV 1 /* dev_t: console terminal device */
#define CPU_ROOT_DEVICE 2 /* string: root device name */
#define CPU_BOOTED_KERNEL 3 /* string: booted kernel name */
#if defined(_KERNEL) || defined(_KMEMUSER)
#include <sys/cpu_data.h>
struct cpu_info {
struct cpu_data ci_data; /* MI per-cpu data */
cpuid_t ci_cpuid;
int ci_mtx_count;
int ci_mtx_oldspl;
volatile int ci_want_resched;
volatile int ci_idepth;
};
#endif /* _KERNEL || _KMEMUSER */
#ifdef _KERNEL
extern struct cpu_info cpu_info_store;
struct proc;
void cpu_proc_fork(struct proc *, struct proc *);
#define curcpu() (&cpu_info_store)
/*
* definitions of cpu-dependent requirements
* referenced in generic code
*/
#define cpu_number() 0
#define LWP_PC(l) (((struct trapframe *)((l)->l_md.md_regs))->tf_pc)
#endif /* _KERNEL */
#endif /* _M68K_CPU_H_ */