1 /* $NetBSD: cpu.h,v 1.40 2002/11/02 20:03:06 chs 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 #include <machine/hp300spu.h> 61 62 /* 63 * Get interrupt glue. 64 */ 65 #include <machine/intr.h> 66 67 #include <sys/sched.h> 68 struct cpu_info { 69 struct schedstate_percpu ci_schedstate; /* scheduler state */ 70 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 71 u_long ci_spin_locks; /* # of spin locks held */ 72 u_long ci_simple_locks; /* # of simple locks held */ 73 #endif 74 }; 75 76 #ifdef _KERNEL 77 extern struct cpu_info cpu_info_store; 78 79 #define curcpu() (&cpu_info_store) 80 81 /* 82 * definitions of cpu-dependent requirements 83 * referenced in generic code 84 */ 85 #define cpu_swapin(p) /* nothing */ 86 #define cpu_wait(p) /* nothing */ 87 #define cpu_swapout(p) /* nothing */ 88 #define cpu_number() 0 89 90 /* 91 * Arguments to hardclock and gatherstats encapsulate the previous 92 * machine state in an opaque clockframe. One the hp300, we use 93 * what the hardware pushes on an interrupt (frame format 0). 94 */ 95 struct clockframe { 96 u_short sr; /* sr at time of interrupt */ 97 u_long pc; /* pc at time of interrupt */ 98 u_short vo; /* vector offset (4-word frame) */ 99 }; 100 101 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 102 #define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 103 #define CLKF_PC(framep) ((framep)->pc) 104 #if 0 105 /* We would like to do it this way... */ 106 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 107 #else 108 /* but until we start using PSL_M, we have to do this instead */ 109 #define CLKF_INTR(framep) (0) /* XXX */ 110 #endif 111 112 113 /* 114 * Preempt the current process if in interrupt from user mode, 115 * or after the current trap/syscall if in system mode. 116 */ 117 extern int want_resched; /* resched() was called */ 118 #define need_resched(ci) { want_resched++; aston(); } 119 120 /* 121 * Give a profiling tick to the current process when the user profiling 122 * buffer pages are invalid. On the hp300, request an ast to send us 123 * through trap, marking the proc as needing a profiling tick. 124 */ 125 #define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } 126 127 /* 128 * Notify the current process (p) that it has a signal pending, 129 * process as soon as possible. 130 */ 131 #define signotify(p) aston() 132 133 extern int astpending; /* need to trap before returning to user mode */ 134 #define aston() (astpending++) 135 136 #endif /* _KERNEL */ 137 138 /* 139 * CTL_MACHDEP definitions. 140 */ 141 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 142 #define CPU_MAXID 2 /* number of valid machdep ids */ 143 144 #define CTL_MACHDEP_NAMES { \ 145 { 0, 0 }, \ 146 { "console_device", CTLTYPE_STRUCT }, \ 147 } 148 149 /* 150 * The rest of this should probably be moved to <machine/hp300spu.h>, 151 * although some of it could probably be put into generic 68k headers. 152 */ 153 154 #ifdef _KERNEL 155 extern char *intiobase, *intiolimit; 156 extern void (*vectab[]) __P((void)); 157 158 struct frame; 159 struct fpframe; 160 struct pcb; 161 162 /* locore.s functions */ 163 void m68881_save __P((struct fpframe *)); 164 void m68881_restore __P((struct fpframe *)); 165 int suline __P((caddr_t, caddr_t)); 166 void savectx __P((struct pcb *)); 167 void switch_exit __P((struct proc *)); 168 void proc_trampoline __P((void)); 169 void loadustp __P((int)); 170 171 void doboot __P((void)) 172 __attribute__((__noreturn__)); 173 void ecacheon __P((void)); 174 void ecacheoff __P((void)); 175 176 /* clock.c functions */ 177 void hp300_calibrate_delay __P((void)); 178 179 /* machdep.c functions */ 180 int badaddr __P((caddr_t)); 181 int badbaddr __P((caddr_t)); 182 183 /* sys_machdep.c functions */ 184 int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 185 186 /* vm_machdep.c functions */ 187 void physaccess __P((caddr_t, caddr_t, int, int)); 188 void physunaccess __P((caddr_t, int)); 189 int kvtop __P((caddr_t)); 190 191 /* what is this supposed to do? i.e. how is it different than startrtclock? */ 192 #define enablertclock() 193 194 #endif 195 196 /* physical memory sections */ 197 #define ROMBASE (0x00000000) 198 #define INTIOBASE (0x00400000) 199 #define INTIOTOP (0x00600000) 200 #define EXTIOBASE (0x00600000) 201 #define EXTIOTOP (0x20000000) 202 #define MAXADDR (0xFFFFF000) 203 204 /* 205 * Internal IO space: 206 * 207 * Ranges from 0x400000 to 0x600000 (IIOMAPSIZE). 208 * 209 * Internal IO space is mapped in the kernel from ``intiobase'' to 210 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 211 * conversion between physical and kernel virtual addresses is easy. 212 */ 213 #define ISIIOVA(va) \ 214 ((char *)(va) >= intiobase && (char *)(va) < intiolimit) 215 #define IIOV(pa) ((int)(pa)-INTIOBASE+(int)intiobase) 216 #define IIOP(va) ((int)(va)-(int)intiobase+INTIOBASE) 217 #define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 218 #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 2mb */ 219 220 /* 221 * External IO space: 222 * 223 * DIO ranges from select codes 0-63 at physical addresses given by: 224 * 0x600000 + (sc - 32) * 0x10000 225 * DIO cards are addressed in the range 0-31 [0x600000-0x800000) for 226 * their control space and the remaining areas, [0x200000-0x400000) and 227 * [0x800000-0x1000000), are for additional space required by a card; 228 * e.g. a display framebuffer. 229 * 230 * DIO-II ranges from select codes 132-255 at physical addresses given by: 231 * 0x1000000 + (sc - 132) * 0x400000 232 * The address range of DIO-II space is thus [0x1000000-0x20000000). 233 * 234 * DIO/DIO-II space is too large to map in its entirety, instead devices 235 * are mapped into kernel virtual address space allocated from a range 236 * of EIOMAPSIZE pages (vmparam.h) starting at ``extiobase''. 237 */ 238 #define DIOBASE (0x600000) 239 #define DIOTOP (0x1000000) 240 #define DIOCSIZE (0x10000) 241 #define DIOIIBASE (0x01000000) 242 #define DIOIITOP (0x20000000) 243 #define DIOIICSIZE (0x00400000) 244 245 /* 246 * HP MMU 247 */ 248 #define MMUBASE IIOPOFF(0x5F4000) 249 #define MMUSSTP 0x0 250 #define MMUUSTP 0x4 251 #define MMUTBINVAL 0x8 252 #define MMUSTAT 0xC 253 #define MMUCMD MMUSTAT 254 255 #define MMU_UMEN 0x0001 /* enable user mapping */ 256 #define MMU_SMEN 0x0002 /* enable supervisor mapping */ 257 #define MMU_CEN 0x0004 /* enable data cache */ 258 #define MMU_BERR 0x0008 /* bus error */ 259 #define MMU_IEN 0x0020 /* enable instruction cache */ 260 #define MMU_FPE 0x0040 /* enable 68881 FP coprocessor */ 261 #define MMU_WPF 0x2000 /* write protect fault */ 262 #define MMU_PF 0x4000 /* page fault */ 263 #define MMU_PTF 0x8000 /* page table fault */ 264 265 #define MMU_FAULT (MMU_PTF|MMU_PF|MMU_WPF|MMU_BERR) 266 #define MMU_ENAB (MMU_UMEN|MMU_SMEN|MMU_IEN|MMU_FPE) 267 268 #if defined(CACHE_HAVE_PAC) || defined(CACHE_HAVE_VAC) 269 #define M68K_CACHEOPS_MACHDEP 270 #endif 271 272 #ifdef CACHE_HAVE_PAC 273 #define M68K_CACHEOPS_MACHDEP_PCIA 274 #endif 275 276 #ifdef CACHE_HAVE_VAC 277 #define M68K_CACHEOPS_MACHDEP_DCIA 278 #define M68K_CACHEOPS_MACHDEP_DCIS 279 #define M68K_CACHEOPS_MACHDEP_DCIU 280 #define M68K_CACHEOPS_MACHDEP_TBIA 281 #define M68K_CACHEOPS_MACHDEP_TBIS 282 #define M68K_CACHEOPS_MACHDEP_TBIAS 283 #define M68K_CACHEOPS_MACHDEP_TBIAU 284 #endif 285 286 #endif /* _HP300_CPU_H_ */ 287