cpu.h revision 1.76
1 /* $NetBSD: cpu.h,v 1.76 2024/01/16 03:44:44 thorpej 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 locore.s glue puts on the stack before calling C-code. 68 */ 69 struct clockframe { 70 u_int cf_regs[4]; /* d0,d1,a0,a1 */ 71 u_short cf_sr; /* sr at time of interrupt */ 72 u_long cf_pc; /* pc at time of interrupt */ 73 u_short cf_vo; /* vector offset (4-word frame) */ 74 } __attribute__((packed)); 75 76 #define CLKF_USERMODE(framep) (((framep)->cf_sr & PSL_S) == 0) 77 #define CLKF_PC(framep) ((framep)->cf_pc) 78 #if 0 79 /* We would like to do it this way... */ 80 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 81 #else 82 /* but until we start using PSL_M, we have to do this instead */ 83 #include <machine/intr.h> 84 #define CLKF_INTR(framep) (idepth > 1) /* XXX */ 85 #endif 86 87 88 /* 89 * Preempt the current process if in interrupt from user mode, 90 * or after the current trap/syscall if in system mode. 91 */ 92 #define cpu_need_resched(ci,l,flags) do { \ 93 __USE(flags); \ 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; 120 121 /* locore.s functions */ 122 void doboot(void) __attribute__((__noreturn__)); 123 void ecacheon(void); 124 void ecacheoff(void); 125 126 /* clock.c functions */ 127 void hp300_calibrate_delay(void); 128 129 /* machdep.c functions */ 130 int badaddr(void *); 131 int badbaddr(void *); 132 133 /* what is this supposed to do? i.e. how is it different than startrtclock? */ 134 #define enablertclock() 135 136 #endif 137 138 /* physical memory sections */ 139 #define ROMBASE (0x00000000) 140 #define INTIOBASE (0x00400000) 141 #define INTIOTOP (0x00600000) 142 #define EXTIOBASE (0x00600000) 143 #define EXTIOTOP (0x20000000) 144 #define MAXADDR ((paddr_t)(0 - NBPG)) 145 146 /* 147 * Internal IO space: 148 * 149 * Ranges from 0x400000 to 0x600000 (IIOMAPSIZE). 150 * 151 * Internal IO space is mapped in the kernel from ``intiobase'' to 152 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 153 * conversion between physical and kernel virtual addresses is easy. 154 */ 155 #define ISIIOVA(va) \ 156 ((uint8_t *)(va) >= intiobase && (uint8_t *)(va) < intiolimit) 157 #define IIOV(pa) ((paddr_t)(pa)-INTIOBASE+(vaddr_t)intiobase) 158 #define IIOP(va) ((vaddr_t)(va)-(vaddr_t)intiobase+INTIOBASE) 159 #define IIOPOFF(pa) ((paddr_t)(pa)-INTIOBASE) 160 #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 2mb */ 161 162 /* 163 * External IO space: 164 * 165 * DIO ranges from select codes 0-63 at physical addresses given by: 166 * 0x600000 + (sc - 32) * 0x10000 167 * DIO cards are addressed in the range 0-31 [0x600000-0x800000) for 168 * their control space and the remaining areas, [0x200000-0x400000) and 169 * [0x800000-0x1000000), are for additional space required by a card; 170 * e.g. a display framebuffer. 171 * 172 * DIO-II ranges from select codes 132-255 at physical addresses given by: 173 * 0x1000000 + (sc - 132) * 0x400000 174 * The address range of DIO-II space is thus [0x1000000-0x20000000). 175 * 176 * DIO/DIO-II space is too large to map in its entirety, instead devices 177 * are mapped into kernel virtual address space allocated from a range 178 * of EIOMAPSIZE pages (vmparam.h) starting at ``extiobase''. 179 */ 180 #define DIOBASE (0x600000) 181 #define DIOTOP (0x1000000) 182 #define DIOCSIZE (0x10000) 183 #define DIOIIBASE (0x01000000) 184 #define DIOIITOP (0x20000000) 185 #define DIOIICSIZE (0x00400000) 186 187 /* 188 * HP MMU 189 */ 190 #define MMUBASE IIOPOFF(0x5F4000) 191 #define MMUSSTP 0x0 192 #define MMUUSTP 0x4 193 #define MMUTBINVAL 0x8 194 #define MMUSTAT 0xC 195 #define MMUCMD MMUSTAT 196 197 #define MMU_UMEN 0x0001 /* enable user mapping */ 198 #define MMU_SMEN 0x0002 /* enable supervisor mapping */ 199 #define MMU_CEN 0x0004 /* enable data cache */ 200 #define MMU_BERR 0x0008 /* bus error */ 201 #define MMU_IEN 0x0020 /* enable instruction cache */ 202 #define MMU_FPE 0x0040 /* enable 68881 FP coprocessor */ 203 #define MMU_WPF 0x2000 /* write protect fault */ 204 #define MMU_PF 0x4000 /* page fault */ 205 #define MMU_PTF 0x8000 /* page table fault */ 206 207 #define MMU_FAULT (MMU_PTF|MMU_PF|MMU_WPF|MMU_BERR) 208 #define MMU_ENAB (MMU_UMEN|MMU_SMEN|MMU_IEN|MMU_FPE) 209 210 #if defined(CACHE_HAVE_PAC) || defined(CACHE_HAVE_VAC) 211 #define M68K_CACHEOPS_MACHDEP 212 #endif 213 214 #ifdef CACHE_HAVE_PAC 215 #define M68K_CACHEOPS_MACHDEP_PCIA 216 #endif 217 218 #ifdef CACHE_HAVE_VAC 219 #define M68K_CACHEOPS_MACHDEP_DCIA 220 #define M68K_CACHEOPS_MACHDEP_DCIS 221 #define M68K_CACHEOPS_MACHDEP_DCIU 222 #define M68K_CACHEOPS_MACHDEP_TBIA 223 #define M68K_CACHEOPS_MACHDEP_TBIS 224 #define M68K_CACHEOPS_MACHDEP_TBIAS 225 #define M68K_CACHEOPS_MACHDEP_TBIAU 226 #endif 227 228 #endif /* _HP300_CPU_H_ */ 229
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