cpu.h revision 1.69.16.1
1 /* $NetBSD: cpu.h,v 1.69.16.1 2019/06/10 22:06:16 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 37 * 38 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 39 */ 40 41 #ifndef _HP300_CPU_H_ 42 #define _HP300_CPU_H_ 43 44 #if defined(_KERNEL_OPT) 45 #include "opt_lockdebug.h" 46 #endif 47 48 /* 49 * Get common m68k CPU definitions. 50 */ 51 #include <m68k/cpu.h> 52 53 #if defined(_KERNEL) 54 /* 55 * Exported definitions unique to hp300/68k cpu support. 56 */ 57 #include <machine/hp300spu.h> 58 59 /* 60 * Get interrupt glue. 61 */ 62 #include <machine/intr.h> 63 64 /* 65 * Arguments to hardclock and gatherstats encapsulate the previous 66 * machine state in an opaque clockframe. On the hp300, we use 67 * what the hardware pushes on an interrupt (frame format 0). 68 */ 69 struct clockframe { 70 u_short sr; /* sr at time of interrupt */ 71 u_long pc; /* pc at time of interrupt */ 72 u_short vo; /* vector offset (4-word frame) */ 73 }; 74 75 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 76 #define CLKF_PC(framep) ((framep)->pc) 77 #if 0 78 /* We would like to do it this way... */ 79 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 80 #else 81 /* but until we start using PSL_M, we have to do this instead */ 82 #include <machine/intr.h> 83 #define CLKF_INTR(framep) (idepth > 1) /* XXX */ 84 #endif 85 86 87 /* 88 * Preempt the current process if in interrupt from user mode, 89 * or after the current trap/syscall if in system mode. 90 */ 91 #define cpu_need_resched(ci,flags) do { \ 92 __USE(flags); \ 93 ci->ci_want_resched = 1; \ 94 aston(); \ 95 } while (/*CONSTCOND*/0) 96 97 /* 98 * Give a profiling tick to the current process when the user profiling 99 * buffer pages are invalid. On the hp300, request an ast to send us 100 * through trap, marking the proc as needing a profiling tick. 101 */ 102 #define cpu_need_proftick(l) \ 103 do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */0) 104 105 /* 106 * Notify the current process (p) that it has a signal pending, 107 * process as soon as possible. 108 */ 109 #define cpu_signotify(l) aston() 110 111 extern int astpending; /* need to trap before returning to user mode */ 112 #define aston() (astpending++) 113 114 /* 115 * The rest of this should probably be moved to <machine/hp300spu.h>, 116 * although some of it could probably be put into generic 68k headers. 117 */ 118 119 extern uint8_t *intiobase, *intiolimit, *extiobase; 120 extern void (*vectab[])(void); 121 122 /* locore.s functions */ 123 void loadustp(int); 124 125 void doboot(void) __attribute__((__noreturn__)); 126 void ecacheon(void); 127 void ecacheoff(void); 128 129 /* clock.c functions */ 130 void hp300_calibrate_delay(void); 131 132 /* machdep.c functions */ 133 int badaddr(void *); 134 int badbaddr(void *); 135 136 /* what is this supposed to do? i.e. how is it different than startrtclock? */ 137 #define enablertclock() 138 139 #endif 140 141 /* physical memory sections */ 142 #define ROMBASE (0x00000000) 143 #define INTIOBASE (0x00400000) 144 #define INTIOTOP (0x00600000) 145 #define EXTIOBASE (0x00600000) 146 #define EXTIOTOP (0x20000000) 147 #define MAXADDR ((paddr_t)(0 - NBPG)) 148 149 /* 150 * Internal IO space: 151 * 152 * Ranges from 0x400000 to 0x600000 (IIOMAPSIZE). 153 * 154 * Internal IO space is mapped in the kernel from ``intiobase'' to 155 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 156 * conversion between physical and kernel virtual addresses is easy. 157 */ 158 #define ISIIOVA(va) \ 159 ((uint8_t *)(va) >= intiobase && (uint8_t *)(va) < intiolimit) 160 #define IIOV(pa) ((paddr_t)(pa)-INTIOBASE+(vaddr_t)intiobase) 161 #define IIOP(va) ((vaddr_t)(va)-(vaddr_t)intiobase+INTIOBASE) 162 #define IIOPOFF(pa) ((paddr_t)(pa)-INTIOBASE) 163 #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 2mb */ 164 165 /* 166 * External IO space: 167 * 168 * DIO ranges from select codes 0-63 at physical addresses given by: 169 * 0x600000 + (sc - 32) * 0x10000 170 * DIO cards are addressed in the range 0-31 [0x600000-0x800000) for 171 * their control space and the remaining areas, [0x200000-0x400000) and 172 * [0x800000-0x1000000), are for additional space required by a card; 173 * e.g. a display framebuffer. 174 * 175 * DIO-II ranges from select codes 132-255 at physical addresses given by: 176 * 0x1000000 + (sc - 132) * 0x400000 177 * The address range of DIO-II space is thus [0x1000000-0x20000000). 178 * 179 * DIO/DIO-II space is too large to map in its entirety, instead devices 180 * are mapped into kernel virtual address space allocated from a range 181 * of EIOMAPSIZE pages (vmparam.h) starting at ``extiobase''. 182 */ 183 #define DIOBASE (0x600000) 184 #define DIOTOP (0x1000000) 185 #define DIOCSIZE (0x10000) 186 #define DIOIIBASE (0x01000000) 187 #define DIOIITOP (0x20000000) 188 #define DIOIICSIZE (0x00400000) 189 190 /* 191 * HP MMU 192 */ 193 #define MMUBASE IIOPOFF(0x5F4000) 194 #define MMUSSTP 0x0 195 #define MMUUSTP 0x4 196 #define MMUTBINVAL 0x8 197 #define MMUSTAT 0xC 198 #define MMUCMD MMUSTAT 199 200 #define MMU_UMEN 0x0001 /* enable user mapping */ 201 #define MMU_SMEN 0x0002 /* enable supervisor mapping */ 202 #define MMU_CEN 0x0004 /* enable data cache */ 203 #define MMU_BERR 0x0008 /* bus error */ 204 #define MMU_IEN 0x0020 /* enable instruction cache */ 205 #define MMU_FPE 0x0040 /* enable 68881 FP coprocessor */ 206 #define MMU_WPF 0x2000 /* write protect fault */ 207 #define MMU_PF 0x4000 /* page fault */ 208 #define MMU_PTF 0x8000 /* page table fault */ 209 210 #define MMU_FAULT (MMU_PTF|MMU_PF|MMU_WPF|MMU_BERR) 211 #define MMU_ENAB (MMU_UMEN|MMU_SMEN|MMU_IEN|MMU_FPE) 212 213 #if defined(CACHE_HAVE_PAC) || defined(CACHE_HAVE_VAC) 214 #define M68K_CACHEOPS_MACHDEP 215 #endif 216 217 #ifdef CACHE_HAVE_PAC 218 #define M68K_CACHEOPS_MACHDEP_PCIA 219 #endif 220 221 #ifdef CACHE_HAVE_VAC 222 #define M68K_CACHEOPS_MACHDEP_DCIA 223 #define M68K_CACHEOPS_MACHDEP_DCIS 224 #define M68K_CACHEOPS_MACHDEP_DCIU 225 #define M68K_CACHEOPS_MACHDEP_TBIA 226 #define M68K_CACHEOPS_MACHDEP_TBIS 227 #define M68K_CACHEOPS_MACHDEP_TBIAS 228 #define M68K_CACHEOPS_MACHDEP_TBIAU 229 #endif 230 231 #endif /* _HP300_CPU_H_ */ 232
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