1 /* $NetBSD: cpu.h,v 1.65 2011/02/08 20:20:13 rmind 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) 45 46 #if defined(_KERNEL_OPT) 47 #include "opt_lockdebug.h" 48 #endif 49 50 /* 51 * Exported definitions unique to hp300/68k cpu support. 52 */ 53 54 /* 55 * Get common m68k CPU definitions. 56 */ 57 #include <m68k/cpu.h> 58 #include <machine/hp300spu.h> 59 60 /* 61 * Get interrupt glue. 62 */ 63 #include <machine/intr.h> 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_PC(framep) ((framep)->pc) 78 #if 0 79 /* We would like to do it this way... */ 80 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 81 #else 82 /* but until we start using PSL_M, we have to do this instead */ 83 #include <machine/intr.h> 84 #define CLKF_INTR(framep) (idepth > 1) /* 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 cpu_need_resched(ci, flags) \ 93 do { ci->ci_want_resched = 1; aston(); } while (/* CONSTCOND */0) 94 95 /* 96 * Give a profiling tick to the current process when the user profiling 97 * buffer pages are invalid. On the hp300, request an ast to send us 98 * through trap, marking the proc as needing a profiling tick. 99 */ 100 #define cpu_need_proftick(l) \ 101 do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */0) 102 103 /* 104 * Notify the current process (p) that it has a signal pending, 105 * process as soon as possible. 106 */ 107 #define cpu_signotify(l) aston() 108 109 extern int astpending; /* need to trap before returning to user mode */ 110 #define aston() (astpending++) 111 112 #endif /* _KERNEL */ 113 114 /* 115 * CTL_MACHDEP definitions. 116 */ 117 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 118 #define CPU_MAXID 2 /* number of valid machdep ids */ 119 120 /* 121 * The rest of this should probably be moved to <machine/hp300spu.h>, 122 * although some of it could probably be put into generic 68k headers. 123 */ 124 125 #ifdef _KERNEL 126 extern uint8_t *intiobase, *intiolimit, *extiobase; 127 extern void (*vectab[])(void); 128 129 struct fpframe; 130 131 /* locore.s functions */ 132 void m68881_save(struct fpframe *); 133 void m68881_restore(struct fpframe *); 134 int suline(void *, void *); 135 void loadustp(int); 136 137 void doboot(void) __attribute__((__noreturn__)); 138 void ecacheon(void); 139 void ecacheoff(void); 140 141 /* clock.c functions */ 142 void hp300_calibrate_delay(void); 143 144 /* machdep.c functions */ 145 int badaddr(void *); 146 int badbaddr(void *); 147 148 /* what is this supposed to do? i.e. how is it different than startrtclock? */ 149 #define enablertclock() 150 151 #endif 152 153 /* physical memory sections */ 154 #define ROMBASE (0x00000000) 155 #define INTIOBASE (0x00400000) 156 #define INTIOTOP (0x00600000) 157 #define EXTIOBASE (0x00600000) 158 #define EXTIOTOP (0x20000000) 159 #define MAXADDR ((paddr_t)(0 - NBPG)) 160 161 /* 162 * Internal IO space: 163 * 164 * Ranges from 0x400000 to 0x600000 (IIOMAPSIZE). 165 * 166 * Internal IO space is mapped in the kernel from ``intiobase'' to 167 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 168 * conversion between physical and kernel virtual addresses is easy. 169 */ 170 #define ISIIOVA(va) \ 171 ((uint8_t *)(va) >= intiobase && (uint8_t *)(va) < intiolimit) 172 #define IIOV(pa) ((paddr_t)(pa)-INTIOBASE+(vaddr_t)intiobase) 173 #define IIOP(va) ((vaddr_t)(va)-(vaddr_t)intiobase+INTIOBASE) 174 #define IIOPOFF(pa) ((paddr_t)(pa)-INTIOBASE) 175 #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 2mb */ 176 177 /* 178 * External IO space: 179 * 180 * DIO ranges from select codes 0-63 at physical addresses given by: 181 * 0x600000 + (sc - 32) * 0x10000 182 * DIO cards are addressed in the range 0-31 [0x600000-0x800000) for 183 * their control space and the remaining areas, [0x200000-0x400000) and 184 * [0x800000-0x1000000), are for additional space required by a card; 185 * e.g. a display framebuffer. 186 * 187 * DIO-II ranges from select codes 132-255 at physical addresses given by: 188 * 0x1000000 + (sc - 132) * 0x400000 189 * The address range of DIO-II space is thus [0x1000000-0x20000000). 190 * 191 * DIO/DIO-II space is too large to map in its entirety, instead devices 192 * are mapped into kernel virtual address space allocated from a range 193 * of EIOMAPSIZE pages (vmparam.h) starting at ``extiobase''. 194 */ 195 #define DIOBASE (0x600000) 196 #define DIOTOP (0x1000000) 197 #define DIOCSIZE (0x10000) 198 #define DIOIIBASE (0x01000000) 199 #define DIOIITOP (0x20000000) 200 #define DIOIICSIZE (0x00400000) 201 202 /* 203 * HP MMU 204 */ 205 #define MMUBASE IIOPOFF(0x5F4000) 206 #define MMUSSTP 0x0 207 #define MMUUSTP 0x4 208 #define MMUTBINVAL 0x8 209 #define MMUSTAT 0xC 210 #define MMUCMD MMUSTAT 211 212 #define MMU_UMEN 0x0001 /* enable user mapping */ 213 #define MMU_SMEN 0x0002 /* enable supervisor mapping */ 214 #define MMU_CEN 0x0004 /* enable data cache */ 215 #define MMU_BERR 0x0008 /* bus error */ 216 #define MMU_IEN 0x0020 /* enable instruction cache */ 217 #define MMU_FPE 0x0040 /* enable 68881 FP coprocessor */ 218 #define MMU_WPF 0x2000 /* write protect fault */ 219 #define MMU_PF 0x4000 /* page fault */ 220 #define MMU_PTF 0x8000 /* page table fault */ 221 222 #define MMU_FAULT (MMU_PTF|MMU_PF|MMU_WPF|MMU_BERR) 223 #define MMU_ENAB (MMU_UMEN|MMU_SMEN|MMU_IEN|MMU_FPE) 224 225 #if defined(CACHE_HAVE_PAC) || defined(CACHE_HAVE_VAC) 226 #define M68K_CACHEOPS_MACHDEP 227 #endif 228 229 #ifdef CACHE_HAVE_PAC 230 #define M68K_CACHEOPS_MACHDEP_PCIA 231 #endif 232 233 #ifdef CACHE_HAVE_VAC 234 #define M68K_CACHEOPS_MACHDEP_DCIA 235 #define M68K_CACHEOPS_MACHDEP_DCIS 236 #define M68K_CACHEOPS_MACHDEP_DCIU 237 #define M68K_CACHEOPS_MACHDEP_TBIA 238 #define M68K_CACHEOPS_MACHDEP_TBIS 239 #define M68K_CACHEOPS_MACHDEP_TBIAS 240 #define M68K_CACHEOPS_MACHDEP_TBIAU 241 #endif 242 243 #endif /* _HP300_CPU_H_ */ 244