1 /* $NetBSD: cpu.h,v 1.48 2001/12/11 03:24:46 uwe Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 * 44 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 45 */ 46 47 #ifndef _CPU_H_ 48 #define _CPU_H_ 49 50 /* 51 * CTL_MACHDEP definitions. 52 */ 53 #define CPU_BOOTED_KERNEL 1 /* string: booted kernel name */ 54 #define CPU_MAXID 2 /* number of valid machdep ids */ 55 56 #define CTL_MACHDEP_NAMES { \ 57 { 0, 0 }, \ 58 { "booted_kernel", CTLTYPE_STRING }, \ 59 } 60 61 #ifdef _KERNEL 62 /* 63 * Exported definitions unique to SPARC cpu support. 64 */ 65 66 #if !defined(_LKM) && defined(_KERNEL_OPT) 67 #include "opt_multiprocessor.h" 68 #include "opt_lockdebug.h" 69 #include "opt_sparc_arch.h" 70 #endif 71 72 #include <machine/psl.h> 73 #include <machine/intr.h> 74 #include <sparc/sparc/cpuvar.h> 75 #include <sparc/sparc/intreg.h> 76 77 /* 78 * definitions of cpu-dependent requirements 79 * referenced in generic code 80 */ 81 #define curcpu() (cpuinfo.ci_self) 82 #define curproc (curcpu()->ci_curproc) 83 #define CPU_IS_PRIMARY(ci) ((ci)->master) 84 85 #define cpu_swapin(p) /* nothing */ 86 #define cpu_swapout(p) /* nothing */ 87 #define cpu_wait(p) /* nothing */ 88 #define cpu_number() (cpuinfo.ci_cpuid) 89 90 #if defined(MULTIPROCESSOR) 91 void cpu_boot_secondary_processors __P((void)); 92 #endif 93 94 /* 95 * Arguments to hardclock, softclock and gatherstats encapsulate the 96 * previous machine state in an opaque clockframe. The ipl is here 97 * as well for strayintr (see locore.s:interrupt and intr.c:strayintr). 98 * Note that CLKF_INTR is valid only if CLKF_USERMODE is false. 99 */ 100 struct clockframe { 101 u_int psr; /* psr before interrupt, excluding PSR_ET */ 102 u_int pc; /* pc at interrupt */ 103 u_int npc; /* npc at interrupt */ 104 u_int ipl; /* actual interrupt priority level */ 105 u_int fp; /* %fp at interrupt */ 106 }; 107 typedef struct clockframe clockframe; 108 109 extern int eintstack[]; 110 111 #define CLKF_USERMODE(framep) (((framep)->psr & PSR_PS) == 0) 112 #define CLKF_BASEPRI(framep) (((framep)->psr & PSR_PIL) == 0) 113 #define CLKF_PC(framep) ((framep)->pc) 114 #if defined(MULTIPROCESSOR) 115 #define CLKF_INTR(framep) \ 116 ((framep)->fp > (u_int)cpuinfo.eintstack - INT_STACK_SIZE && \ 117 (framep)->fp < (u_int)cpuinfo.eintstack) 118 #else 119 #define CLKF_INTR(framep) ((framep)->fp < (u_int)eintstack) 120 #endif 121 122 #if defined(SUN4M) 123 extern void raise __P((int, int)); 124 #if !(defined(SUN4) || defined(SUN4C)) 125 #define setsoftint() raise(0,1) 126 #else /* both defined */ 127 #define setsoftint() (cputyp == CPU_SUN4M ? raise(0,1) : ienab_bis(IE_L1)) 128 #endif /* !4,!4c */ 129 #else /* 4m not defined */ 130 #define setsoftint() ienab_bis(IE_L1) 131 #endif /* SUN4M */ 132 133 void softintr_init __P((void)); 134 void *softnet_cookie; 135 136 #define setsoftnet() softintr_schedule(softnet_cookie); 137 138 extern int want_ast; 139 140 /* 141 * Preempt the current process if in interrupt from user mode, 142 * or after the current trap/syscall if in system mode. 143 */ 144 extern int want_resched; /* resched() was called */ 145 #define need_resched(ci) (want_resched = 1, want_ast = 1) 146 147 /* 148 * Give a profiling tick to the current process when the user profiling 149 * buffer pages are invalid. On the sparc, request an ast to send us 150 * through trap(), marking the proc as needing a profiling tick. 151 */ 152 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, want_ast = 1) 153 154 /* 155 * Notify the current process (p) that it has a signal pending, 156 * process as soon as possible. 157 */ 158 #define signotify(p) (want_ast = 1) 159 160 /* Number of CPUs in the system */ 161 extern int ncpu; 162 163 /* 164 * Only one process may own the FPU state. 165 * 166 * XXX this must be per-cpu (eventually) 167 */ 168 extern struct proc *fpproc; /* FPU owner */ 169 extern int foundfpu; /* true => we have an FPU */ 170 171 /* 172 * Interrupt handler chains. Interrupt handlers should return 0 for 173 * ``not me'' or 1 (``I took care of it''). intr_establish() inserts a 174 * handler into the list. The handler is called with its (single) 175 * argument, or with a pointer to a clockframe if ih_arg is NULL. 176 */ 177 extern struct intrhand { 178 int (*ih_fun) __P((void *)); 179 void *ih_arg; 180 struct intrhand *ih_next; 181 } *intrhand[15]; 182 183 void intr_establish __P((int level, struct intrhand *)); 184 void intr_disestablish __P((int level, struct intrhand *)); 185 186 /* 187 * intr_fasttrap() is a lot like intr_establish, but is used for ``fast'' 188 * interrupt vectors (vectors that are not shared and are handled in the 189 * trap window). Such functions must be written in assembly. 190 */ 191 void intr_fasttrap __P((int level, void (*vec)(void))); 192 193 void intr_lock_kernel __P((void)); 194 void intr_unlock_kernel __P((void)); 195 196 /* disksubr.c */ 197 struct dkbad; 198 int isbad __P((struct dkbad *bt, int, int, int)); 199 /* machdep.c */ 200 int ldcontrolb __P((caddr_t)); 201 void dumpconf __P((void)); 202 caddr_t reserve_dumppages __P((caddr_t)); 203 /* clock.c */ 204 struct timeval; 205 void lo_microtime __P((struct timeval *)); 206 int clockintr __P((void *));/* level 10 (clock) interrupt code */ 207 int statintr __P((void *)); /* level 14 (statclock) interrupt code */ 208 /* locore.s */ 209 struct fpstate; 210 void savefpstate __P((struct fpstate *)); 211 void loadfpstate __P((struct fpstate *)); 212 int probeget __P((caddr_t, int)); 213 void write_all_windows __P((void)); 214 void write_user_windows __P((void)); 215 void proc_trampoline __P((void)); 216 void switchexit __P((struct proc *)); 217 struct pcb; 218 void snapshot __P((struct pcb *)); 219 struct frame *getfp __P((void)); 220 int xldcontrolb __P((caddr_t, struct pcb *)); 221 void copywords __P((const void *, void *, size_t)); 222 void qcopy __P((const void *, void *, size_t)); 223 void qzero __P((void *, size_t)); 224 /* trap.c */ 225 void kill_user_windows __P((struct proc *)); 226 int rwindow_save __P((struct proc *)); 227 /* amd7930intr.s */ 228 void amd7930_trap __P((void)); 229 /* cons.c */ 230 int cnrom __P((void)); 231 /* zs.c */ 232 void zsconsole __P((struct tty *, int, int, void (**)(struct tty *, int))); 233 #ifdef KGDB 234 void zs_kgdb_init __P((void)); 235 #endif 236 /* fb.c */ 237 void fb_unblank __P((void)); 238 /* cache.c */ 239 void cache_flush __P((caddr_t, u_int)); 240 /* kgdb_stub.c */ 241 #ifdef KGDB 242 void kgdb_attach __P((int (*)(void *), void (*)(void *, int), void *)); 243 void kgdb_connect __P((int)); 244 void kgdb_panic __P((void)); 245 #endif 246 /* emul.c */ 247 struct trapframe; 248 int fixalign __P((struct proc *, struct trapframe *)); 249 int emulinstr __P((int, struct trapframe *)); 250 /* cpu.c */ 251 void mp_pause_cpus __P((void)); 252 void mp_resume_cpus __P((void)); 253 void mp_halt_cpus __P((void)); 254 /* msiiep.c */ 255 void msiiep_swap_endian __P((int)); 256 257 /* 258 * 259 * The SPARC has a Trap Base Register (TBR) which holds the upper 20 bits 260 * of the trap vector table. The next eight bits are supplied by the 261 * hardware when the trap occurs, and the bottom four bits are always 262 * zero (so that we can shove up to 16 bytes of executable code---exactly 263 * four instructions---into each trap vector). 264 * 265 * The hardware allocates half the trap vectors to hardware and half to 266 * software. 267 * 268 * Traps have priorities assigned (lower number => higher priority). 269 */ 270 271 struct trapvec { 272 int tv_instr[4]; /* the four instructions */ 273 }; 274 extern struct trapvec *trapbase; /* the 256 vectors */ 275 276 extern void wzero __P((void *, u_int)); 277 extern void wcopy __P((const void *, void *, u_int)); 278 279 #endif /* _KERNEL */ 280 #endif /* _CPU_H_ */ 281