1 /* $NetBSD: cpu.h,v 1.69 2004/03/19 20:17:51 matt Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Ludd, University of Lule}, Sweden 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed at Ludd, University of Lule} 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef _VAX_CPU_H_ 34 #define _VAX_CPU_H_ 35 36 #if defined(_KERNEL_OPT) 37 #include "opt_multiprocessor.h" 38 #include "opt_lockdebug.h" 39 #endif 40 41 #define CPU_PRINTFATALTRAPS 1 42 #define CPU_CONSDEV 2 43 #define CPU_BOOTED_DEVICE 3 44 #define CPU_BOOTED_KERNEL 4 45 #define CPU_MAXID 5 46 47 #define CTL_MACHDEP_NAMES { \ 48 { 0, 0 }, \ 49 { "printfataltraps", CTLTYPE_INT }, \ 50 { "console_device", CTLTYPE_STRUCT }, \ 51 { "booted_device", CTLTYPE_STRING }, \ 52 { "booted_kernel", CTLTYPE_STRING }, \ 53 } 54 55 #ifdef _KERNEL 56 57 #include <sys/cdefs.h> 58 #include <sys/queue.h> 59 #include <sys/device.h> 60 #include <sys/lock.h> 61 #include <sys/sched.h> 62 63 #include <machine/mtpr.h> 64 #include <machine/pcb.h> 65 #include <machine/uvax.h> 66 #include <machine/psl.h> 67 68 #define enablertclock() 69 70 /* 71 * All cpu-dependent info is kept in this struct. Pointer to the 72 * struct for the current cpu is set up in locore.c. 73 */ 74 struct cpu_info; 75 76 struct cpu_dep { 77 void (*cpu_steal_pages)(void); /* pmap init before mm is on */ 78 int (*cpu_mchk)(caddr_t); /* Machine check handling */ 79 void (*cpu_memerr)(void); /* Memory subsystem errors */ 80 /* Autoconfiguration */ 81 void (*cpu_conf)(void); 82 int (*cpu_clkread)(time_t); /* Read cpu clock time */ 83 void (*cpu_clkwrite)(void); /* Write system time to cpu */ 84 short cpu_vups; /* speed of cpu */ 85 short cpu_scbsz; /* (estimated) size of system control block */ 86 void (*cpu_halt)(void); /* Cpu dependent halt call */ 87 void (*cpu_reboot)(int); /* Cpu dependent reboot call */ 88 void (*cpu_clrf)(void); /* Clear cold/warm start flags */ 89 void (*cpu_subconf)(struct device *);/*config cpu dep. devs */ 90 int cpu_flags; 91 void (*cpu_badaddr)(void); /* cpu-specific badaddr() */ 92 }; 93 94 #if defined(MULTIPROCESSOR) 95 /* 96 * All cpu-dependent calls for multicpu systems goes here. 97 */ 98 struct cpu_mp_dep { 99 void (*cpu_startslave)(struct device *, struct cpu_info *); 100 void (*cpu_send_ipi)(struct device *dest); 101 void (*cpu_cnintr)(void); 102 }; 103 /* 104 * NOTE: This is not bit mask, this is bit _number_. 105 */ 106 #define IPI_START_CNTX 1 /* Start console transmitter, proc out */ 107 #define IPI_SEND_CNCHAR 2 /* Write char to console, kernel printf */ 108 #define IPI_RUNNING 3 /* This CPU just started to run */ 109 #define IPI_TBIA 4 /* Flush the TLB */ 110 #define IPI_DDB 5 /* Jump into the DDB loop */ 111 112 #define IPI_DEST_MASTER -1 /* Destination is mastercpu */ 113 #define IPI_DEST_ALL -2 /* Broadcast */ 114 115 extern struct cpu_mp_dep *mp_dep_call; 116 #endif /* defined(MULTIPROCESSOR) */ 117 118 #define CPU_RAISEIPL 1 /* Must raise IPL until intr is handled */ 119 120 extern struct cpu_dep *dep_call; /* Holds pointer to current CPU struct. */ 121 122 struct clockframe { 123 int pc; 124 int ps; 125 }; 126 127 struct cpu_info { 128 /* 129 * Public members. 130 */ 131 struct schedstate_percpu ci_schedstate; /* scheduler state */ 132 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 133 u_long ci_spin_locks; /* # of spin locks held */ 134 u_long ci_simple_locks; /* # of simple locks held */ 135 #endif 136 137 struct lwp *ci_curlwp; /* current owner of the processor */ 138 139 /* 140 * Private members. 141 */ 142 int ci_want_resched; /* Should change process */ 143 struct device *ci_dev; /* device struct for this cpu */ 144 long ci_exit; /* Page to use while exiting */ 145 #if defined(MULTIPROCESSOR) 146 struct pcb *ci_pcb; /* Idle PCB for this CPU */ 147 vaddr_t ci_istack; /* Interrupt stack location */ 148 int ci_flags; /* See below */ 149 long ci_ipimsgs; /* Sent IPI bits */ 150 struct trapframe *ci_ddb_regs; /* Used by DDB */ 151 SIMPLEQ_ENTRY(cpu_info) ci_next; /* next cpu_info */ 152 #endif 153 }; 154 #define CI_MASTERCPU 1 /* Set if master CPU */ 155 #define CI_RUNNING 2 /* Set when a slave CPU is running */ 156 #define CI_STOPPED 4 /* Stopped (in debugger) */ 157 158 extern int cpu_printfataltraps; 159 160 #if defined(MULTIPROCESSOR) 161 /* 162 * "helper" struct. All multicpu systems must have the first two field 163 * of its cpu softc like this. (used in multicpu.c). 164 */ 165 struct cpu_mp_softc { 166 struct device sc_dev; 167 struct cpu_info sc_ci; 168 }; 169 #endif /* defined(MULTIPROCESSOR) */ 170 171 #define ci_cpuid ci_dev->dv_unit 172 #define curcpu() ((struct cpu_info *)mfpr(PR_SSP)) 173 #define curlwp (curcpu()->ci_curlwp) 174 #define cpu_number() (curcpu()->ci_cpuid) 175 #define need_resched(ci) \ 176 do { \ 177 (ci)->ci_want_resched = 1; \ 178 mtpr(AST_OK,PR_ASTLVL); \ 179 } while (/*CONSTCOND*/ 0) 180 #define cpu_proc_fork(x, y) do { } while (/*CONSCOND*/0) 181 #define cpu_lwp_free(l, f) do { } while (/*CONSCOND*/0) 182 #if defined(MULTIPROCESSOR) 183 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CI_MASTERCPU) 184 185 #define CPU_INFO_ITERATOR int 186 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = SIMPLEQ_FIRST(&cpus); \ 187 ci != NULL; \ 188 ci = SIMPLEQ_NEXT(ci, ci_next) 189 190 extern SIMPLEQ_HEAD(cpu_info_qh, cpu_info) cpus; 191 extern char tramp; 192 #endif 193 194 /* 195 * Notify the current process (p) that it has a signal pending, 196 * process as soon as possible. 197 */ 198 199 #define signotify(p) mtpr(AST_OK,PR_ASTLVL); 200 201 202 /* 203 * Give a profiling tick to the current process when the user profiling 204 * buffer pages are invalid. On the hp300, request an ast to send us 205 * through trap, marking the proc as needing a profiling tick. 206 */ 207 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); } 208 209 /* 210 * This defines the I/O device register space size in pages. 211 */ 212 #define IOSPSZ ((64*1024) / VAX_NBPG) /* 64k == 128 pages */ 213 214 struct device; 215 struct buf; 216 struct pte; 217 218 /* Some low-level prototypes */ 219 #if defined(MULTIPROCESSOR) 220 void cpu_slavesetup(struct device *); 221 void cpu_boot_secondary_processors(void); 222 void cpu_send_ipi(int, int); 223 void cpu_handle_ipi(void); 224 #endif 225 int badaddr(caddr_t, int); 226 void dumpconf(void); 227 void dumpsys(void); 228 void swapconf(void); 229 void disk_printtype(int, int); 230 void disk_reallymapin(struct buf *, struct pte *, int, int); 231 vaddr_t vax_map_physmem(paddr_t, int); 232 void vax_unmap_physmem(vaddr_t, int); 233 void ioaccess(vaddr_t, paddr_t, int); 234 void iounaccess(vaddr_t, int); 235 void findcpu(void); 236 #ifdef DDB 237 int kdbrint(int); 238 #endif 239 #endif /* _KERNEL */ 240 #ifdef _STANDALONE 241 void findcpu(void); 242 #endif 243 #endif /* _VAX_CPU_H_ */ 244