cpu.h revision 1.56
1 /* $NetBSD: cpu.h,v 1.56 2001/10/16 16:31:33 uch Exp $ */ 2 3 /*- 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell and Rick Macklem. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)cpu.h 8.4 (Berkeley) 1/4/94 39 */ 40 41 #ifndef _CPU_H_ 42 #define _CPU_H_ 43 44 #include <mips/cpuregs.h> 45 46 /* 47 * Exported definitions unique to NetBSD/mips cpu support. 48 */ 49 50 #ifndef _LOCORE 51 #include <sys/sched.h> 52 53 #if defined(_KERNEL_OPT) 54 #include "opt_lockdebug.h" 55 #endif 56 57 struct cpu_info { 58 struct schedstate_percpu ci_schedstate; /* scheduler state */ 59 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 60 u_long ci_spin_locks; /* # of spin locks held */ 61 u_long ci_simple_locks; /* # of simple locks held */ 62 #endif 63 }; 64 #endif /* !defined(_LOCORE) */ 65 66 /* 67 * CTL_MACHDEP definitions. 68 */ 69 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 70 #define CPU_BOOTED_KERNEL 2 /* string: booted kernel name */ 71 #define CPU_ROOT_DEVICE 3 /* string: root device name */ 72 73 /* 74 * Platform can override, but note this breaks userland compatibility 75 * with other mips platforms. 76 */ 77 #ifndef CPU_MAXID 78 #define CPU_MAXID 4 /* number of valid machdep ids */ 79 80 #define CTL_MACHDEP_NAMES { \ 81 { 0, 0 }, \ 82 { "console_device", CTLTYPE_STRUCT }, \ 83 { "booted_kernel", CTLTYPE_STRING }, \ 84 { "root_device", CTLTYPE_STRING }, \ 85 } 86 #endif 87 88 #ifdef _KERNEL 89 #ifndef _LOCORE 90 extern struct cpu_info cpu_info_store; 91 92 #define curcpu() (&cpu_info_store) 93 #define cpu_number() (0) 94 95 /* 96 * Macros to find the CPU architecture we're on at run-time, 97 * or if possible, at compile-time. 98 */ 99 100 extern int cpu_arch; 101 102 #define CPU_ARCH_MIPS1 (1 << 0) 103 #define CPU_ARCH_MIPS2 (1 << 1) 104 #define CPU_ARCH_MIPS3 (1 << 2) 105 #define CPU_ARCH_MIPS4 (1 << 3) 106 #define CPU_ARCH_MIPS5 (1 << 4) 107 #define CPU_ARCH_MIPS32 (1 << 5) 108 #define CPU_ARCH_MIPS64 (1 << 6) 109 110 #if (MIPS1 + MIPS3) == 1 111 #ifdef MIPS1 112 # define CPUISMIPS3 0 113 #endif /* mips1 */ 114 115 #ifdef MIPS3 116 # define CPUISMIPS3 1 117 #endif /* mips1 */ 118 119 #else /* run-time test */ 120 121 /* This test is ... rather bogus */ 122 #define CPUISMIPS3 ((cpu_arch & (CPU_ARCH_MIPS3 | CPU_ARCH_MIPS4)) != 0) 123 #endif /* run-time test */ 124 125 /* 126 * definitions of cpu-dependent requirements 127 * referenced in generic code 128 */ 129 #define cpu_wait(p) /* nothing */ 130 #define cpu_swapout(p) panic("cpu_swapout: can't get here"); 131 132 void cpu_intr __P((u_int32_t, u_int32_t, u_int32_t, u_int32_t)); 133 134 /* 135 * Arguments to hardclock and gatherstats encapsulate the previous 136 * machine state in an opaque clockframe. 137 */ 138 struct clockframe { 139 int pc; /* program counter at time of interrupt */ 140 int sr; /* status register at time of interrupt */ 141 int ppl; /* previous priority level at time of interrupt */ 142 }; 143 144 /* 145 * A port must provde CLKF_USERMODE() and CLKF_BASEPRI() for use 146 * in machine-independent code. These differ on r4000 and r3000 systems; 147 * provide them in the port-dependent file that includes this one, using 148 * the macros below. 149 */ 150 151 /* mips1 versions */ 152 #define MIPS1_CLKF_USERMODE(framep) ((framep)->sr & MIPS_SR_KU_PREV) 153 #define MIPS1_CLKF_BASEPRI(framep) \ 154 ((~(framep)->sr & (MIPS_INT_MASK | MIPS_SR_INT_ENA_PREV)) == 0) 155 156 /* mips3 versions */ 157 #define MIPS3_CLKF_USERMODE(framep) ((framep)->sr & MIPS_SR_KSU_USER) 158 #define MIPS3_CLKF_BASEPRI(framep) \ 159 ((~(framep)->sr & (MIPS_INT_MASK | MIPS_SR_INT_IE)) == 0) 160 161 #ifdef IPL_ICU_MASK 162 #define ICU_CLKF_BASEPRI(framep) ((framep)->ppl == 0) 163 #endif 164 165 #define CLKF_PC(framep) ((framep)->pc) 166 #define CLKF_INTR(framep) (0) 167 168 #if defined(MIPS3) && !defined(MIPS1) 169 #define CLKF_USERMODE(framep) MIPS3_CLKF_USERMODE(framep) 170 #define CLKF_BASEPRI(framep) MIPS3_CLKF_BASEPRI(framep) 171 #endif 172 173 #if !defined(MIPS3) && defined(MIPS1) 174 #define CLKF_USERMODE(framep) MIPS1_CLKF_USERMODE(framep) 175 #define CLKF_BASEPRI(framep) MIPS1_CLKF_BASEPRI(framep) 176 #endif 177 178 #ifdef IPL_ICU_MASK 179 #undef CLKF_BASEPRI 180 #define CLKF_BASEPRI(framep) ICU_CLKF_BASEPRI(framep) 181 #endif 182 183 #if defined(MIPS3) && defined(MIPS1) 184 #define CLKF_USERMODE(framep) \ 185 ((CPUISMIPS3) ? MIPS3_CLKF_USERMODE(framep): MIPS1_CLKF_USERMODE(framep)) 186 #define CLKF_BASEPRI(framep) \ 187 ((CPUISMIPS3) ? MIPS3_CLKF_BASEPRI(framep): MIPS1_CLKF_BASEPRI(framep)) 188 #endif 189 190 /* 191 * This is used during profiling to integrate system time. It can safely 192 * assume that the process is resident. 193 */ 194 #define PROC_PC(p) \ 195 (((struct frame *)(p)->p_md.md_regs)->f_regs[37]) /* XXX PC */ 196 197 /* 198 * Preempt the current process if in interrupt from user mode, 199 * or after the current trap/syscall if in system mode. 200 */ 201 #define need_resched(ci) \ 202 do { \ 203 want_resched = 1; \ 204 if (curproc != NULL) \ 205 aston(curproc); \ 206 } while (/*CONSTCOND*/0) 207 208 /* 209 * Give a profiling tick to the current process when the user profiling 210 * buffer pages are invalid. On the MIPS, request an ast to send us 211 * through trap, marking the proc as needing a profiling tick. 212 */ 213 #define need_proftick(p) \ 214 do { \ 215 (p)->p_flag |= P_OWEUPC; \ 216 aston(p); \ 217 } while (/*CONSTCOND*/0) 218 219 /* 220 * Notify the current process (p) that it has a signal pending, 221 * process as soon as possible. 222 */ 223 #define signotify(p) aston(p) 224 225 #define aston(p) ((p)->p_md.md_astpending = 1) 226 227 extern int want_resched; /* resched() was called */ 228 #ifdef MIPS3 229 extern u_int mips_L2CacheSize; 230 extern int mips_L2CacheIsSnooping; /* L2 cache snoops uncached writes ? */ 231 extern int mips_L2CacheMixed; 232 #endif /* MIPS3 */ 233 234 /* 235 * Misc prototypes and variable declarations. 236 */ 237 struct proc; 238 struct user; 239 240 extern struct proc *fpcurproc; 241 242 /* trap.c */ 243 void netintr __P((void)); 244 int kdbpeek __P((vaddr_t)); 245 246 /* mips_machdep.c */ 247 void dumpsys __P((void)); 248 int savectx __P((struct user *)); 249 void mips_init_msgbuf __P((void)); 250 void savefpregs __P((struct proc *)); 251 void loadfpregs __P((struct proc *)); 252 253 /* locore.S */ 254 int badaddr __P((void *, size_t)); 255 256 /* mips_machdep.c */ 257 void cpu_identify __P((void)); 258 void mips_vector_init __P((void)); 259 260 #endif /* ! _LOCORE */ 261 #endif /* _KERNEL */ 262 263 #endif /* _CPU_H_ */ 264
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