cpu.h revision 1.38
1 /* $NetBSD: cpu.h,v 1.38 2001/05/30 12:28:42 mrg 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 #if defined(_KERNEL_OPT) 49 #include "opt_lockdebug.h" 50 #endif 51 52 /* 53 * Exported definitions unique to hp300/68k cpu support. 54 */ 55 56 /* 57 * Get common m68k CPU definitions. 58 */ 59 #include <m68k/cpu.h> 60 61 /* 62 * Get interrupt glue. 63 */ 64 #include <machine/intr.h> 65 66 #include <sys/sched.h> 67 struct cpu_info { 68 struct schedstate_percpu ci_schedstate; /* scheduler state */ 69 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 70 u_long ci_spin_locks; /* # of spin locks held */ 71 u_long ci_simple_locks; /* # of simple locks held */ 72 #endif 73 }; 74 75 #ifdef _KERNEL 76 extern struct cpu_info cpu_info_store; 77 78 #define curcpu() (&cpu_info_store) 79 80 /* 81 * definitions of cpu-dependent requirements 82 * referenced in generic code 83 */ 84 #define cpu_swapin(p) /* nothing */ 85 #define cpu_wait(p) /* nothing */ 86 #define cpu_swapout(p) /* nothing */ 87 #define cpu_number() 0 88 89 /* 90 * Arguments to hardclock and gatherstats encapsulate the previous 91 * machine state in an opaque clockframe. One the hp300, we use 92 * what the hardware pushes on an interrupt (frame format 0). 93 */ 94 struct clockframe { 95 u_short sr; /* sr at time of interrupt */ 96 u_long pc; /* pc at time of interrupt */ 97 u_short vo; /* vector offset (4-word frame) */ 98 }; 99 100 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 101 #define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 102 #define CLKF_PC(framep) ((framep)->pc) 103 #if 0 104 /* We would like to do it this way... */ 105 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 106 #else 107 /* but until we start using PSL_M, we have to do this instead */ 108 #define CLKF_INTR(framep) (0) /* XXX */ 109 #endif 110 111 112 /* 113 * Preempt the current process if in interrupt from user mode, 114 * or after the current trap/syscall if in system mode. 115 */ 116 extern int want_resched; /* resched() was called */ 117 #define need_resched(ci) { want_resched++; aston(); } 118 119 /* 120 * Give a profiling tick to the current process when the user profiling 121 * buffer pages are invalid. On the hp300, request an ast to send us 122 * through trap, marking the proc as needing a profiling tick. 123 */ 124 #define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } 125 126 /* 127 * Notify the current process (p) that it has a signal pending, 128 * process as soon as possible. 129 */ 130 #define signotify(p) aston() 131 132 extern int astpending; /* need to trap before returning to user mode */ 133 #define aston() (astpending++) 134 135 #endif /* _KERNEL */ 136 137 /* 138 * CTL_MACHDEP definitions. 139 */ 140 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 141 #define CPU_MAXID 2 /* number of valid machdep ids */ 142 143 #define CTL_MACHDEP_NAMES { \ 144 { 0, 0 }, \ 145 { "console_device", CTLTYPE_STRUCT }, \ 146 } 147 148 /* 149 * The rest of this should probably be moved to <machine/hp300spu.h>, 150 * although some of it could probably be put into generic 68k headers. 151 */ 152 153 #ifdef _KERNEL 154 extern char *intiobase, *intiolimit; 155 extern void (*vectab[]) __P((void)); 156 157 struct frame; 158 struct fpframe; 159 struct pcb; 160 161 /* locore.s functions */ 162 void m68881_save __P((struct fpframe *)); 163 void m68881_restore __P((struct fpframe *)); 164 void DCIA __P((void)); 165 void DCIS __P((void)); 166 void DCIU __P((void)); 167 void ICIA __P((void)); 168 void ICPA __P((void)); 169 void PCIA __P((void)); 170 void TBIA __P((void)); 171 void TBIS __P((vaddr_t)); 172 void TBIAS __P((void)); 173 void TBIAU __P((void)); 174 #if defined(M68040) 175 void DCFA __P((void)); 176 void DCFP __P((paddr_t)); 177 void DCFL __P((paddr_t)); 178 void DCPL __P((paddr_t)); 179 void DCPP __P((paddr_t)); 180 void ICPL __P((paddr_t)); 181 void ICPP __P((paddr_t)); 182 #endif 183 int suline __P((caddr_t, caddr_t)); 184 void savectx __P((struct pcb *)); 185 void switch_exit __P((struct proc *)); 186 void proc_trampoline __P((void)); 187 void loadustp __P((int)); 188 189 void doboot __P((void)) 190 __attribute__((__noreturn__)); 191 void ecacheon __P((void)); 192 void ecacheoff __P((void)); 193 194 /* clock.c functions */ 195 void hp300_calibrate_delay __P((void)); 196 197 /* machdep.c functions */ 198 int badaddr __P((caddr_t)); 199 int badbaddr __P((caddr_t)); 200 201 /* sys_machdep.c functions */ 202 int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 203 204 /* vm_machdep.c functions */ 205 void physaccess __P((caddr_t, caddr_t, int, int)); 206 void physunaccess __P((caddr_t, int)); 207 int kvtop __P((caddr_t)); 208 209 /* what is this supposed to do? i.e. how is it different than startrtclock? */ 210 #define enablertclock() 211 212 #endif 213 214 /* physical memory sections */ 215 #define ROMBASE (0x00000000) 216 #define INTIOBASE (0x00400000) 217 #define INTIOTOP (0x00600000) 218 #define EXTIOBASE (0x00600000) 219 #define EXTIOTOP (0x20000000) 220 #define MAXADDR (0xFFFFF000) 221 222 /* 223 * Internal IO space: 224 * 225 * Ranges from 0x400000 to 0x600000 (IIOMAPSIZE). 226 * 227 * Internal IO space is mapped in the kernel from ``intiobase'' to 228 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 229 * conversion between physical and kernel virtual addresses is easy. 230 */ 231 #define ISIIOVA(va) \ 232 ((char *)(va) >= intiobase && (char *)(va) < intiolimit) 233 #define IIOV(pa) ((int)(pa)-INTIOBASE+(int)intiobase) 234 #define IIOP(va) ((int)(va)-(int)intiobase+INTIOBASE) 235 #define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 236 #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 2mb */ 237 238 /* 239 * External IO space: 240 * 241 * DIO ranges from select codes 0-63 at physical addresses given by: 242 * 0x600000 + (sc - 32) * 0x10000 243 * DIO cards are addressed in the range 0-31 [0x600000-0x800000) for 244 * their control space and the remaining areas, [0x200000-0x400000) and 245 * [0x800000-0x1000000), are for additional space required by a card; 246 * e.g. a display framebuffer. 247 * 248 * DIO-II ranges from select codes 132-255 at physical addresses given by: 249 * 0x1000000 + (sc - 132) * 0x400000 250 * The address range of DIO-II space is thus [0x1000000-0x20000000). 251 * 252 * DIO/DIO-II space is too large to map in its entirety, instead devices 253 * are mapped into kernel virtual address space allocated from a range 254 * of EIOMAPSIZE pages (vmparam.h) starting at ``extiobase''. 255 */ 256 #define DIOBASE (0x600000) 257 #define DIOTOP (0x1000000) 258 #define DIOCSIZE (0x10000) 259 #define DIOIIBASE (0x01000000) 260 #define DIOIITOP (0x20000000) 261 #define DIOIICSIZE (0x00400000) 262 263 /* 264 * HP MMU 265 */ 266 #define MMUBASE IIOPOFF(0x5F4000) 267 #define MMUSSTP 0x0 268 #define MMUUSTP 0x4 269 #define MMUTBINVAL 0x8 270 #define MMUSTAT 0xC 271 #define MMUCMD MMUSTAT 272 273 #define MMU_UMEN 0x0001 /* enable user mapping */ 274 #define MMU_SMEN 0x0002 /* enable supervisor mapping */ 275 #define MMU_CEN 0x0004 /* enable data cache */ 276 #define MMU_BERR 0x0008 /* bus error */ 277 #define MMU_IEN 0x0020 /* enable instruction cache */ 278 #define MMU_FPE 0x0040 /* enable 68881 FP coprocessor */ 279 #define MMU_WPF 0x2000 /* write protect fault */ 280 #define MMU_PF 0x4000 /* page fault */ 281 #define MMU_PTF 0x8000 /* page table fault */ 282 283 #define MMU_FAULT (MMU_PTF|MMU_PF|MMU_WPF|MMU_BERR) 284 #define MMU_ENAB (MMU_UMEN|MMU_SMEN|MMU_IEN|MMU_FPE) 285 286 #endif /* _HP300_CPU_H_ */ 287
Indexes created Mon Sep 29 13:09:55 GMT 2025