cpu.h revision 1.22
1 /* $NetBSD: cpu.h,v 1.22 1997/04/01 03:03:58 scottr 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. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 41 * 42 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 43 */ 44 45 #ifndef _HP300_CPU_H_ 46 #define _HP300_CPU_H_ 47 48 /* 49 * Exported definitions unique to hp300/68k cpu support. 50 */ 51 52 /* 53 * Get common m68k CPU definitions. 54 */ 55 #include <m68k/cpu.h> 56 57 /* 58 * definitions of cpu-dependent requirements 59 * referenced in generic code 60 */ 61 #define cpu_swapin(p) /* nothing */ 62 #define cpu_wait(p) /* nothing */ 63 #define cpu_swapout(p) /* nothing */ 64 65 /* 66 * Arguments to hardclock and gatherstats encapsulate the previous 67 * machine state in an opaque clockframe. One the hp300, we use 68 * what the hardware pushes on an interrupt (frame format 0). 69 */ 70 struct clockframe { 71 u_short sr; /* sr at time of interrupt */ 72 u_long pc; /* pc at time of interrupt */ 73 u_short vo; /* vector offset (4-word frame) */ 74 }; 75 76 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 77 #define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 78 #define CLKF_PC(framep) ((framep)->pc) 79 #if 0 80 /* We would like to do it this way... */ 81 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 82 #else 83 /* but until we start using PSL_M, we have to do this instead */ 84 #define CLKF_INTR(framep) (0) /* 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 need_resched() { want_resched++; aston(); } 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 need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } 100 101 /* 102 * Notify the current process (p) that it has a signal pending, 103 * process as soon as possible. 104 */ 105 #define signotify(p) aston() 106 107 #define aston() (astpending++) 108 109 int astpending; /* need to trap before returning to user mode */ 110 int want_resched; /* resched() was called */ 111 112 113 /* 114 * simulated software interrupt register 115 */ 116 extern unsigned char ssir; 117 118 #define SIR_NET 0x1 119 #define SIR_CLOCK 0x2 120 121 #define siroff(x) ssir &= ~(x) 122 #define setsoftnet() ssir |= SIR_NET 123 #define setsoftclock() ssir |= SIR_CLOCK 124 125 /* 126 * CTL_MACHDEP definitions. 127 */ 128 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 129 #define CPU_MAXID 2 /* number of valid machdep ids */ 130 131 #define CTL_MACHDEP_NAMES { \ 132 { 0, 0 }, \ 133 { "console_device", CTLTYPE_STRUCT }, \ 134 } 135 136 #ifdef _KERNEL 137 /* 138 * Associate HP 9000/300 models with CPU/MMU combinations. 139 */ 140 141 /* 142 * HP 68020-based computers. HP320 and HP350 have an HP MMU. 143 * HP330 has a Motorola MMU. 144 */ 145 #if (defined(HP320) || defined(HP330) || defined(HP350)) 146 #ifndef M68020 147 #define M68020 148 #endif /* ! M68020 */ 149 150 #if defined(HP330) && !defined(M68K_MMU_MOTOROLA) 151 #define M68K_MMU_MOTOROLA 152 #endif /* HP330 && ! M68K_MMU_MOTOROLA */ 153 154 #if (defined(HP320) || defined(HP350)) && !defined(M68K_MMU_HP) 155 #define M68K_MMU_HP /* include cheezy VAC support */ 156 #endif /* (HP320 || HP350) && ! M68K_MMU_HP */ 157 #endif /* HP320 || HP330 || HP350 */ 158 159 /* 160 * HP 68030-based computers. HP375 includes support for the 161 * 345, 400t, and 400s. 162 */ 163 #if (defined(HP340) || defined(HP360) || defined(HP370) || defined(HP375)) 164 #ifndef M68030 165 #define M68030 166 #endif /* ! M68030 */ 167 168 #ifndef M68K_MMU_MOTOROLA 169 #define M68K_MMU_MOTOROLA 170 #endif /* ! M68K_MMU_MOTOROLA */ 171 #endif /* HP340 || HP360 || HP370 || HP375 */ 172 173 /* 174 * HP 68040-based computers. HP380 includes support for the 175 * 425t, 425s, and 433s. 176 */ 177 #if defined(HP380) 178 #ifndef M68040 179 #define M68040 180 #endif /* ! M68040 */ 181 182 #ifndef M68K_MMU_MOTOROLA 183 #define M68K_MMU_MOTOROLA 184 #endif /* ! M68K_MMU_MOTOROLA */ 185 #endif /* HP380 */ 186 #endif /* _KERNEL */ 187 188 /* 189 * The rest of this should probably be moved to ../hp300/hp300cpu.h, 190 * although some of it could probably be put into generic 68k headers. 191 */ 192 193 /* values for machineid */ 194 #define HP_320 0 /* 16Mhz 68020+HP MMU+16K external cache */ 195 #define HP_330 1 /* 16Mhz 68020+68851 MMU */ 196 #define HP_350 2 /* 25Mhz 68020+HP MMU+32K external cache */ 197 #define HP_360 3 /* 25Mhz 68030 */ 198 #define HP_370 4 /* 33Mhz 68030+64K external cache */ 199 #define HP_340 5 /* 16Mhz 68030 */ 200 #define HP_375 6 /* 50Mhz 68030+32K external cache */ 201 #define HP_380 7 /* 25Mhz 68040 */ 202 #define HP_433 8 /* 33Mhz 68040 */ 203 204 #ifdef _KERNEL 205 extern int machineid; /* CPU model */ 206 extern int cpuspeed; /* CPU speed, in MHz */ 207 208 extern char *intiobase, *intiolimit; 209 extern void (*vectab[]) __P((void)); 210 211 struct frame; 212 struct fpframe; 213 struct pcb; 214 215 /* locore.s functions */ 216 void m68881_save __P((struct fpframe *)); 217 void m68881_restore __P((struct fpframe *)); 218 u_long getdfc __P((void)); 219 u_long getsfc __P((void)); 220 void DCIA __P((void)); 221 void DCIS __P((void)); 222 void DCIU __P((void)); 223 void ICIA __P((void)); 224 void ICPA __P((void)); 225 void PCIA __P((void)); 226 void TBIA __P((void)); 227 void TBIS __P((vm_offset_t)); 228 void TBIAS __P((void)); 229 void TBIAU __P((void)); 230 #if defined(M68040) 231 void DCFA __P((void)); 232 void DCFP __P((vm_offset_t)); 233 void DCFL __P((vm_offset_t)); 234 void DCPL __P((vm_offset_t)); 235 void DCPP __P((vm_offset_t)); 236 void ICPL __P((vm_offset_t)); 237 void ICPP __P((vm_offset_t)); 238 #endif 239 int suline __P((caddr_t, caddr_t)); 240 void savectx __P((struct pcb *)); 241 void switch_exit __P((struct proc *)); 242 void proc_trampoline __P((void)); 243 void loadustp __P((int)); 244 245 void doboot __P((void)) 246 __attribute__((__noreturn__)); 247 void ecacheon __P((void)); 248 void ecacheoff __P((void)); 249 250 /* machdep.c functions */ 251 int badaddr __P((caddr_t)); 252 int badbaddr __P((caddr_t)); 253 void regdump __P((struct frame *, int)); 254 255 /* sys_machdep.c functions */ 256 int cachectl __P((int, caddr_t, int)); 257 258 /* vm_machdep.c functions */ 259 void physaccess __P((caddr_t, caddr_t, int, int)); 260 void physunaccess __P((caddr_t, int)); 261 int kvtop __P((caddr_t)); 262 263 /* what is this supposed to do? i.e. how is it different than startrtclock? */ 264 #define enablertclock() 265 266 #endif 267 268 /* physical memory sections */ 269 #define ROMBASE (0x00000000) 270 #define INTIOBASE (0x00400000) 271 #define INTIOTOP (0x00600000) 272 #define EXTIOBASE (0x00600000) 273 #define EXTIOTOP (0x20000000) 274 #define MAXADDR (0xFFFFF000) 275 276 /* 277 * Internal IO space: 278 * 279 * Ranges from 0x400000 to 0x600000 (IIOMAPSIZE). 280 * 281 * Internal IO space is mapped in the kernel from ``intiobase'' to 282 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 283 * conversion between physical and kernel virtual addresses is easy. 284 */ 285 #define ISIIOVA(va) \ 286 ((char *)(va) >= intiobase && (char *)(va) < intiolimit) 287 #define IIOV(pa) ((int)(pa)-INTIOBASE+(int)intiobase) 288 #define IIOP(va) ((int)(va)-(int)intiobase+INTIOBASE) 289 #define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 290 #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 2mb */ 291 292 /* 293 * External IO space: 294 * 295 * DIO ranges from select codes 0-63 at physical addresses given by: 296 * 0x600000 + (sc - 32) * 0x10000 297 * DIO cards are addressed in the range 0-31 [0x600000-0x800000) for 298 * their control space and the remaining areas, [0x200000-0x400000) and 299 * [0x800000-0x1000000), are for additional space required by a card; 300 * e.g. a display framebuffer. 301 * 302 * DIO-II ranges from select codes 132-255 at physical addresses given by: 303 * 0x1000000 + (sc - 132) * 0x400000 304 * The address range of DIO-II space is thus [0x1000000-0x20000000). 305 * 306 * DIO/DIO-II space is too large to map in its entirety, instead devices 307 * are mapped into kernel virtual address space allocated from a range 308 * of EIOMAPSIZE pages (vmparam.h) starting at ``extiobase''. 309 */ 310 #define DIOBASE (0x600000) 311 #define DIOTOP (0x1000000) 312 #define DIOCSIZE (0x10000) 313 #define DIOIIBASE (0x01000000) 314 #define DIOIITOP (0x20000000) 315 #define DIOIICSIZE (0x00400000) 316 317 /* 318 * HP MMU 319 */ 320 #define MMUBASE IIOPOFF(0x5F4000) 321 #define MMUSSTP 0x0 322 #define MMUUSTP 0x4 323 #define MMUTBINVAL 0x8 324 #define MMUSTAT 0xC 325 #define MMUCMD MMUSTAT 326 327 #define MMU_UMEN 0x0001 /* enable user mapping */ 328 #define MMU_SMEN 0x0002 /* enable supervisor mapping */ 329 #define MMU_CEN 0x0004 /* enable data cache */ 330 #define MMU_BERR 0x0008 /* bus error */ 331 #define MMU_IEN 0x0020 /* enable instruction cache */ 332 #define MMU_FPE 0x0040 /* enable 68881 FP coprocessor */ 333 #define MMU_WPF 0x2000 /* write protect fault */ 334 #define MMU_PF 0x4000 /* page fault */ 335 #define MMU_PTF 0x8000 /* page table fault */ 336 337 #define MMU_FAULT (MMU_PTF|MMU_PF|MMU_WPF|MMU_BERR) 338 #define MMU_ENAB (MMU_UMEN|MMU_SMEN|MMU_IEN|MMU_FPE) 339 340 #endif /* _HP300_CPU_H_ */ 341
Indexes created Thu Sep 25 16:09:42 GMT 2025