1 /* $NetBSD: cpu.h,v 1.20 1995/12/21 05:02:10 mycroft Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Gordon W. Ross 5 * Copyright (c) 1993 Adam Glass 6 * Copyright (c) 1988 University of Utah. 7 * Copyright (c) 1982, 1990 The Regents of the University of California. 8 * All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * the Systems Programming Group of the University of Utah Computer 12 * Science Department. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. All advertising materials mentioning features or use of this software 23 * must display the following acknowledgement: 24 * This product includes software developed by the University of 25 * California, Berkeley and its contributors. 26 * 4. Neither the name of the University nor the names of its contributors 27 * may be used to endorse or promote products derived from this software 28 * without specific prior written permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 33 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 40 * SUCH DAMAGE. 41 * 42 * from: Utah Hdr: cpu.h 1.16 91/03/25 43 * from: @(#)cpu.h 7.7 (Berkeley) 6/27/91 44 * cpu.h,v 1.2 1993/05/22 07:58:17 cgd Exp 45 */ 46 47 #ifdef _KERNEL 48 49 /* 50 * Exported definitions unique to sun3/68k cpu support. 51 */ 52 53 /* 54 * definitions of cpu-dependent requirements 55 * referenced in generic code 56 */ 57 #define cpu_swapin(p) /* nothing */ 58 #define cpu_wait(p) /* nothing */ 59 60 /* 61 * Arguments to hardclock and gatherstats encapsulate the previous 62 * machine state in an opaque clockframe. One the sun3, we use 63 * what the hardware pushes on an interrupt (frame format 0). 64 */ 65 struct clockframe { 66 u_short sr; /* sr at time of interrupt */ 67 u_long pc; /* pc at time of interrupt */ 68 u_short vo; /* vector offset (4-word frame) */ 69 }; 70 71 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 72 #define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 73 #define CLKF_PC(framep) ((framep)->pc) 74 #if 0 75 /* We would like to do it this way... */ 76 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 77 #else 78 /* but until we start using PSL_M, we have to do this instead */ 79 #define CLKF_INTR(framep) (0) /* XXX */ 80 #endif 81 82 extern int astpending; /* need to trap before returning to user mode */ 83 #define aston() (astpending++) 84 85 /* 86 * Preempt the current process if in interrupt from user mode, 87 * or after the current trap/syscall if in system mode. 88 */ 89 extern int want_resched; /* resched() was called */ 90 #define need_resched() { want_resched++; aston(); } 91 92 /* 93 * Give a profiling tick to the current process when the user profiling 94 * buffer pages are invalid. On the sun3, request an ast to send us 95 * through trap, marking the proc as needing a profiling tick. 96 */ 97 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, aston()) 98 99 /* 100 * Notify the current process (p) that it has a signal pending, 101 * process as soon as possible. 102 */ 103 #define signotify(p) aston() 104 105 /* 106 * Software Interrupt Register (SIR) 107 * The sun3 has a real software interrupt register set by 108 * isr_soft_request() so this scheme just multiplexes four 109 * software interrupt `sources' on the level one handler. 110 */ 111 union sun3sir { 112 int sir_any; 113 char sir_which[4]; 114 } sun3sir; 115 116 #define SIR_NET 0 117 #define SIR_CLOCK 1 118 #define SIR_SPARE2 2 119 #define SIR_SPARE3 3 120 121 #define setsoftint() isr_soft_request(1) 122 #define setsoftnet() (sun3sir.sir_which[SIR_NET] = 1, setsoftint()) 123 #define setsoftclock() (sun3sir.sir_which[SIR_CLOCK] = 1, setsoftint()) 124 125 126 /* 127 * CTL_MACHDEP definitions. 128 */ 129 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 130 #define CPU_MAXID 2 /* number of valid machdep ids */ 131 132 #define CTL_MACHDEP_NAMES { \ 133 { 0, 0 }, \ 134 { "console_device", CTLTYPE_STRUCT }, \ 135 } 136 137 /* values for cpu_machine_id */ 138 139 #define CPU_ARCH_MASK 0xf0 140 #define SUN3_ARCH 0x10 141 #define SUN3_IMPL_MASK 0x0f 142 #define SUN3_MACH_160 0x01 143 #define SUN3_MACH_50 0x02 144 #define SUN3_MACH_260 0x03 145 #define SUN3_MACH_110 0x04 146 #define SUN3_MACH_60 0x07 147 #define SUN3_MACH_E 0x08 148 149 extern unsigned char cpu_machine_id; 150 151 /* 680X0 function codes */ 152 #define FC_USERD 1 /* user data space */ 153 #define FC_USERP 2 /* user program space */ 154 #define FC_CONTROL 3 /* sun control space */ 155 #define FC_SUPERD 5 /* supervisor data space */ 156 #define FC_SUPERP 6 /* supervisor program space */ 157 #define FC_CPU 7 /* CPU space */ 158 159 /* fields in the 68020 cache control register */ 160 #define IC_ENABLE 0x0001 /* enable instruction cache */ 161 #define IC_FREEZE 0x0002 /* freeze instruction cache */ 162 #define IC_CE 0x0004 /* clear instruction cache entry */ 163 #define IC_CLR 0x0008 /* clear entire instruction cache */ 164 165 #define IC_CLEAR (IC_CLR|IC_ENABLE) 166 167 #endif /* _KERNEL */ 168