1 /* $NetBSD: cpu.h,v 1.68 2013/10/19 19:20:59 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. One 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 #endif /* _KERNEL */ 115 116 /* 117 * CTL_MACHDEP definitions. 118 */ 119 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 120 #define CPU_MAXID 2 /* number of valid machdep ids */ 121 122 /* 123 * The rest of this should probably be moved to <machine/hp300spu.h>, 124 * although some of it could probably be put into generic 68k headers. 125 */ 126 127 #ifdef _KERNEL 128 extern uint8_t *intiobase, *intiolimit, *extiobase; 129 extern void (*vectab[])(void); 130 131 /* locore.s functions */ 132 int suline(void *, void *); 133 void loadustp(int); 134 135 void doboot(void) __attribute__((__noreturn__)); 136 void ecacheon(void); 137 void ecacheoff(void); 138 139 /* clock.c functions */ 140 void hp300_calibrate_delay(void); 141 142 /* machdep.c functions */ 143 int badaddr(void *); 144 int badbaddr(void *); 145 146 /* what is this supposed to do? i.e. how is it different than startrtclock? */ 147 #define enablertclock() 148 149 #endif 150 151 /* physical memory sections */ 152 #define ROMBASE (0x00000000) 153 #define INTIOBASE (0x00400000) 154 #define INTIOTOP (0x00600000) 155 #define EXTIOBASE (0x00600000) 156 #define EXTIOTOP (0x20000000) 157 #define MAXADDR ((paddr_t)(0 - NBPG)) 158 159 /* 160 * Internal IO space: 161 * 162 * Ranges from 0x400000 to 0x600000 (IIOMAPSIZE). 163 * 164 * Internal IO space is mapped in the kernel from ``intiobase'' to 165 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 166 * conversion between physical and kernel virtual addresses is easy. 167 */ 168 #define ISIIOVA(va) \ 169 ((uint8_t *)(va) >= intiobase && (uint8_t *)(va) < intiolimit) 170 #define IIOV(pa) ((paddr_t)(pa)-INTIOBASE+(vaddr_t)intiobase) 171 #define IIOP(va) ((vaddr_t)(va)-(vaddr_t)intiobase+INTIOBASE) 172 #define IIOPOFF(pa) ((paddr_t)(pa)-INTIOBASE) 173 #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 2mb */ 174 175 /* 176 * External IO space: 177 * 178 * DIO ranges from select codes 0-63 at physical addresses given by: 179 * 0x600000 + (sc - 32) * 0x10000 180 * DIO cards are addressed in the range 0-31 [0x600000-0x800000) for 181 * their control space and the remaining areas, [0x200000-0x400000) and 182 * [0x800000-0x1000000), are for additional space required by a card; 183 * e.g. a display framebuffer. 184 * 185 * DIO-II ranges from select codes 132-255 at physical addresses given by: 186 * 0x1000000 + (sc - 132) * 0x400000 187 * The address range of DIO-II space is thus [0x1000000-0x20000000). 188 * 189 * DIO/DIO-II space is too large to map in its entirety, instead devices 190 * are mapped into kernel virtual address space allocated from a range 191 * of EIOMAPSIZE pages (vmparam.h) starting at ``extiobase''. 192 */ 193 #define DIOBASE (0x600000) 194 #define DIOTOP (0x1000000) 195 #define DIOCSIZE (0x10000) 196 #define DIOIIBASE (0x01000000) 197 #define DIOIITOP (0x20000000) 198 #define DIOIICSIZE (0x00400000) 199 200 /* 201 * HP MMU 202 */ 203 #define MMUBASE IIOPOFF(0x5F4000) 204 #define MMUSSTP 0x0 205 #define MMUUSTP 0x4 206 #define MMUTBINVAL 0x8 207 #define MMUSTAT 0xC 208 #define MMUCMD MMUSTAT 209 210 #define MMU_UMEN 0x0001 /* enable user mapping */ 211 #define MMU_SMEN 0x0002 /* enable supervisor mapping */ 212 #define MMU_CEN 0x0004 /* enable data cache */ 213 #define MMU_BERR 0x0008 /* bus error */ 214 #define MMU_IEN 0x0020 /* enable instruction cache */ 215 #define MMU_FPE 0x0040 /* enable 68881 FP coprocessor */ 216 #define MMU_WPF 0x2000 /* write protect fault */ 217 #define MMU_PF 0x4000 /* page fault */ 218 #define MMU_PTF 0x8000 /* page table fault */ 219 220 #define MMU_FAULT (MMU_PTF|MMU_PF|MMU_WPF|MMU_BERR) 221 #define MMU_ENAB (MMU_UMEN|MMU_SMEN|MMU_IEN|MMU_FPE) 222 223 #if defined(CACHE_HAVE_PAC) || defined(CACHE_HAVE_VAC) 224 #define M68K_CACHEOPS_MACHDEP 225 #endif 226 227 #ifdef CACHE_HAVE_PAC 228 #define M68K_CACHEOPS_MACHDEP_PCIA 229 #endif 230 231 #ifdef CACHE_HAVE_VAC 232 #define M68K_CACHEOPS_MACHDEP_DCIA 233 #define M68K_CACHEOPS_MACHDEP_DCIS 234 #define M68K_CACHEOPS_MACHDEP_DCIU 235 #define M68K_CACHEOPS_MACHDEP_TBIA 236 #define M68K_CACHEOPS_MACHDEP_TBIS 237 #define M68K_CACHEOPS_MACHDEP_TBIAS 238 #define M68K_CACHEOPS_MACHDEP_TBIAU 239 #endif 240 241 #endif /* _HP300_CPU_H_ */ 242