/* $Id: cpu.h,v 1.2 1995/11/07 08:49:47 deraadt Exp $ */ /* * Copyright (c) 1995 Theo de Raadt * * 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 under OpenBSD by * Theo de Raadt for Willowglen Singapore. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. * * 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. 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. * * from: Utah $Hdr: cpu.h 1.16 91/03/25$ * * @(#)cpu.h 8.4 (Berkeley) 1/5/94 */ /* * Exported definitions unique to mvme68k/68k cpu support. */ /* * definitions of cpu-dependent requirements * referenced in generic code */ #define cpu_swapin(p) /* nothing */ #define cpu_wait(p) /* nothing */ #define cpu_setstack(p, ap) (p)->p_md.md_regs[SP] = ap #define cpu_swapout(p) /* nothing */ /* * Arguments to hardclock and gatherstats encapsulate the previous * machine state in an opaque clockframe. One the m68k, 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_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 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. */ #define need_resched() { want_resched++; aston(); } /* * Give a profiling tick to the current process when the user profiling * buffer pages are invalid. On the m68k, 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++) int astpending; /* need to trap before returning to user mode */ int want_resched; /* resched() was called */ /* * simulated software interrupt register */ extern unsigned char ssir; #define SIR_NET 0x1 #define SIR_CLOCK 0x2 #define setsoftint(x) ssir |= (x) #define setsoftnet() ssir |= SIR_NET #define setsoftclock() ssir |= SIR_CLOCK u_long allocate_sir __P((void (*proc)(), void *arg)); /* * CTL_MACHDEP definitions. */ #define CPU_CONSDEV 1 /* dev_t: console terminal device */ #define CPU_MAXID 2 /* number of valid machdep ids */ #define CTL_MACHDEP_NAMES { \ { 0, 0 }, \ { "console_device", CTLTYPE_STRUCT }, \ } /* values for mmutype (assigned for quick testing) */ #define MMU_68040 -2 /* 68040 on-chip MMU */ #define MMU_68030 -1 /* 68030 on-chip subset of 68851 */ #define MMU_68851 1 /* Motorola 68851 */ /* values for ectype */ #define EC_PHYS -1 /* external physical address cache */ #define EC_NONE 0 /* no external cache */ #define EC_VIRT 1 /* external virtual address cache */ #ifdef _KERNEL extern int mmutype, ectype; extern char *intiobase, *intiolimit; extern char *iiomapbase; extern int iiomapsize; #endif /* physical memory sections for mvme147 */ #define INTIOBASE_147 (0xfffe0000) #define INTIOTOP_147 (0xfffe5000) #define INTIOSIZE_147 ((INTIOTOP_147-INTIOBASE_147)/NBPG) /* physical memory sections for mvme16x */ #define INTIOBASE_162 (0xfff00000) #define INTIOTOP_162 (0xfffd0000) /* was 0xfff50000 */ #define INTIOSIZE_162 ((INTIOTOP_162-INTIOBASE_162)/NBPG) /* * Internal IO space (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)-(int)iiomapbase+(int)intiobase) #define IIOP(va) ((int)(va)-(int)intiobase+(int)iiomapbase) #define IIOPOFF(pa) ((int)(pa)-(int)iiomapbase) /* * 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) /* * 68040 MMU */ #define MMU4_RES 0x001 #define MMU4_TTR 0x002 #define MMU4_WP 0x004 #define MMU4_MOD 0x010 #define MMU4_CMMASK 0x060 #define MMU4_SUP 0x080 #define MMU4_U0 0x100 #define MMU4_U1 0x200 #define MMU4_GLB 0x400 #define MMU4_BE 0x800 /* 680X0 function codes */ #define FC_USERD 1 /* user data space */ #define FC_USERP 2 /* user program space */ #define FC_SUPERD 5 /* supervisor data space */ #define FC_SUPERP 6 /* supervisor program space */ #define FC_CPU 7 /* CPU space */ /* 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 */ #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) /* 68040 cache control register */ #define IC4_ENABLE 0x00008000 /* instruction cache enable bit */ #define DC4_ENABLE 0x80000000 /* data cache enable bit */ #define CACHE4_ON (IC4_ENABLE|DC4_ENABLE) #define CACHE4_OFF (0) extern int cputyp; #define CPU_147 0x147 #define CPU_162 0x162 #define CPU_166 0x166 #define CPU_167 0x167 #define CPU_172 0x172 #define CPU_177 0x177 struct intrhand { struct intrhand *ih_next; int (*ih_fn)(); void *ih_arg; int ih_ipl; int ih_wantframe; }; struct haltvec { struct haltvec *hv_next; void (*hv_fn) __P((void)); int hv_pri; };