1 /* Copyright (c) 1993 Adam Glass 2 * Copyright (c) 1988 University of Utah. 3 * Copyright (c) 1982, 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * the Systems Programming Group of the University of Utah Computer 8 * Science Department. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 39 * 40 * from: @(#)cpu.h 7.7 (Berkeley) 6/27/91 41 * cpu.h,v 1.2 1993/05/22 07:58:17 cgd Exp 42 */ 43 44 #ifdef KERNEL 45 46 /* 47 * Exported definitions unique to sun3/68k cpu support. 48 */ 49 50 /* 51 * definitions of cpu-dependent requirements 52 * referenced in generic code 53 */ 54 #define COPY_SIGCODE /* copy sigcode above user stack in exec */ 55 56 /* 57 * function vs. inline configuration; 58 * these are defined to get generic functions 59 * rather than inline or machine-dependent implementations 60 */ 61 #define NEED_MINMAX /* need {,i,l,ul}{min,max} functions */ 62 #undef NEED_FFS /* don't need ffs function */ 63 #undef NEED_BCMP /* don't need bcmp function */ 64 #undef NEED_STRLEN /* don't need strlen function */ 65 66 #define cpu_exec(p) /* nothing */ 67 #define cpu_wait(p) /* nothing */ 68 69 /* 70 * Arguments to hardclock, softclock and gatherstats 71 * encapsulate the previous machine state in an opaque 72 * clockframe; for hp300, use just what the hardware 73 * leaves on the stack. 74 */ 75 struct clockframe { 76 int pc; 77 int ps; 78 }; 79 80 #define CLKF_USERMODE(framep) (((framep)->ps & PSL_S) == 0) 81 #define CLKF_BASEPRI(framep) (((framep)->ps & PSL_IPL7) == 0) 82 #define CLKF_PC(framep) ((framep)->pc) 83 #define CLKF_INTR(framep) (0) /* XXX laziness */ 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 #define need_resched() { want_resched++; aston(); } 90 91 /* 92 * Give a profiling tick to the current process from the softclock 93 * interrupt. On hp300, request an ast to send us through trap(), 94 * marking the proc as needing a profiling tick. 95 */ 96 #define need_proftick(p) ((p)->p_flag |= SOWEUPC, aston()) 97 98 /* 99 * Notify the current process (p) that it has a signal pending, 100 * process as soon as possible. 101 */ 102 #define signotify(p) aston() 103 104 #define aston() (astpending++) 105 106 int astpending; /* need to trap before returning to user mode */ 107 int want_resched; /* resched() was called */ 108 109 #define fuswintr(x) (-1) 110 #define suswintr(x,y) (-1) 111 112 #include <machine/mtpr.h> 113 114 /* values for machineid */ 115 116 #define CPU_ARCH_MASK 0xf0 117 #define SUN3_ARCH 0x10 118 #define SUN3_IMPL_MASK 0x0f 119 #define SUN3_MACH_160 0x01 120 #define SUN3_MACH_50 0x02 121 #define SUN3_MACH_260 0x03 122 #define SUN3_MACH_110 0x04 123 #define SUN3_MACH_60 0x07 124 #define SUN3_MACH_E 0x08 125 126 extern int machineid, mmutype, ectype; 127 extern char *intiobase, *intiolimit; 128 129 /* 680X0 function codes */ 130 #define FC_USERD 1 /* user data space */ 131 #define FC_USERP 2 /* user program space */ 132 #define FC_CONTROL 3 /* HPMMU: clear TLB entries */ 133 #define FC_SUPERD 5 /* supervisor data space */ 134 #define FC_SUPERP 6 /* supervisor program space */ 135 #define FC_CPU 7 /* CPU space */ 136 137 /* fields in the 68020 cache control register */ 138 #define IC_ENABLE 0x0001 /* enable instruction cache */ 139 #define IC_FREEZE 0x0002 /* freeze instruction cache */ 140 #define IC_CE 0x0004 /* clear instruction cache entry */ 141 #define IC_CLR 0x0008 /* clear entire instruction cache */ 142 143 #endif 144