1 /* $NetBSD: cpu.h,v 1.67 2012/02/02 16:59:42 tsutsui 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) \ 92 do { ci->ci_want_resched = 1; aston(); } while (/* CONSTCOND */0) 93 94 /* 95 * Give a profiling tick to the current process when the user profiling 96 * buffer pages are invalid. On the hp300, request an ast to send us 97 * through trap, marking the proc as needing a profiling tick. 98 */ 99 #define cpu_need_proftick(l) \ 100 do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */0) 101 102 /* 103 * Notify the current process (p) that it has a signal pending, 104 * process as soon as possible. 105 */ 106 #define cpu_signotify(l) aston() 107 108 extern int astpending; /* need to trap before returning to user mode */ 109 #define aston() (astpending++) 110 111 #endif /* _KERNEL */ 112 113 /* 114 * CTL_MACHDEP definitions. 115 */ 116 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 117 #define CPU_MAXID 2 /* number of valid machdep ids */ 118 119 /* 120 * The rest of this should probably be moved to <machine/hp300spu.h>, 121 * although some of it could probably be put into generic 68k headers. 122 */ 123 124 #ifdef _KERNEL 125 extern uint8_t *intiobase, *intiolimit, *extiobase; 126 extern void (*vectab[])(void); 127 128 /* locore.s functions */ 129 int suline(void *, void *); 130 void loadustp(int); 131 132 void doboot(void) __attribute__((__noreturn__)); 133 void ecacheon(void); 134 void ecacheoff(void); 135 136 /* clock.c functions */ 137 void hp300_calibrate_delay(void); 138 139 /* machdep.c functions */ 140 int badaddr(void *); 141 int badbaddr(void *); 142 143 /* what is this supposed to do? i.e. how is it different than startrtclock? */ 144 #define enablertclock() 145 146 #endif 147 148 /* physical memory sections */ 149 #define ROMBASE (0x00000000) 150 #define INTIOBASE (0x00400000) 151 #define INTIOTOP (0x00600000) 152 #define EXTIOBASE (0x00600000) 153 #define EXTIOTOP (0x20000000) 154 #define MAXADDR ((paddr_t)(0 - NBPG)) 155 156 /* 157 * Internal IO space: 158 * 159 * Ranges from 0x400000 to 0x600000 (IIOMAPSIZE). 160 * 161 * Internal IO space is mapped in the kernel from ``intiobase'' to 162 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 163 * conversion between physical and kernel virtual addresses is easy. 164 */ 165 #define ISIIOVA(va) \ 166 ((uint8_t *)(va) >= intiobase && (uint8_t *)(va) < intiolimit) 167 #define IIOV(pa) ((paddr_t)(pa)-INTIOBASE+(vaddr_t)intiobase) 168 #define IIOP(va) ((vaddr_t)(va)-(vaddr_t)intiobase+INTIOBASE) 169 #define IIOPOFF(pa) ((paddr_t)(pa)-INTIOBASE) 170 #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 2mb */ 171 172 /* 173 * External IO space: 174 * 175 * DIO ranges from select codes 0-63 at physical addresses given by: 176 * 0x600000 + (sc - 32) * 0x10000 177 * DIO cards are addressed in the range 0-31 [0x600000-0x800000) for 178 * their control space and the remaining areas, [0x200000-0x400000) and 179 * [0x800000-0x1000000), are for additional space required by a card; 180 * e.g. a display framebuffer. 181 * 182 * DIO-II ranges from select codes 132-255 at physical addresses given by: 183 * 0x1000000 + (sc - 132) * 0x400000 184 * The address range of DIO-II space is thus [0x1000000-0x20000000). 185 * 186 * DIO/DIO-II space is too large to map in its entirety, instead devices 187 * are mapped into kernel virtual address space allocated from a range 188 * of EIOMAPSIZE pages (vmparam.h) starting at ``extiobase''. 189 */ 190 #define DIOBASE (0x600000) 191 #define DIOTOP (0x1000000) 192 #define DIOCSIZE (0x10000) 193 #define DIOIIBASE (0x01000000) 194 #define DIOIITOP (0x20000000) 195 #define DIOIICSIZE (0x00400000) 196 197 /* 198 * HP MMU 199 */ 200 #define MMUBASE IIOPOFF(0x5F4000) 201 #define MMUSSTP 0x0 202 #define MMUUSTP 0x4 203 #define MMUTBINVAL 0x8 204 #define MMUSTAT 0xC 205 #define MMUCMD MMUSTAT 206 207 #define MMU_UMEN 0x0001 /* enable user mapping */ 208 #define MMU_SMEN 0x0002 /* enable supervisor mapping */ 209 #define MMU_CEN 0x0004 /* enable data cache */ 210 #define MMU_BERR 0x0008 /* bus error */ 211 #define MMU_IEN 0x0020 /* enable instruction cache */ 212 #define MMU_FPE 0x0040 /* enable 68881 FP coprocessor */ 213 #define MMU_WPF 0x2000 /* write protect fault */ 214 #define MMU_PF 0x4000 /* page fault */ 215 #define MMU_PTF 0x8000 /* page table fault */ 216 217 #define MMU_FAULT (MMU_PTF|MMU_PF|MMU_WPF|MMU_BERR) 218 #define MMU_ENAB (MMU_UMEN|MMU_SMEN|MMU_IEN|MMU_FPE) 219 220 #if defined(CACHE_HAVE_PAC) || defined(CACHE_HAVE_VAC) 221 #define M68K_CACHEOPS_MACHDEP 222 #endif 223 224 #ifdef CACHE_HAVE_PAC 225 #define M68K_CACHEOPS_MACHDEP_PCIA 226 #endif 227 228 #ifdef CACHE_HAVE_VAC 229 #define M68K_CACHEOPS_MACHDEP_DCIA 230 #define M68K_CACHEOPS_MACHDEP_DCIS 231 #define M68K_CACHEOPS_MACHDEP_DCIU 232 #define M68K_CACHEOPS_MACHDEP_TBIA 233 #define M68K_CACHEOPS_MACHDEP_TBIS 234 #define M68K_CACHEOPS_MACHDEP_TBIAS 235 #define M68K_CACHEOPS_MACHDEP_TBIAU 236 #endif 237 238 #endif /* _HP300_CPU_H_ */ 239