1 /* $NetBSD: cpu.h,v 1.84 2008/02/27 18:26:16 xtraeme 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 #ifdef _KERNEL 48 49 #include <sys/cdefs.h> 50 #include <sys/queue.h> 51 #include <sys/device.h> 52 #include <sys/cpu_data.h> 53 54 #include <machine/mtpr.h> 55 #include <machine/pcb.h> 56 #include <machine/uvax.h> 57 #include <machine/psl.h> 58 59 #define enablertclock() 60 61 /* 62 * All cpu-dependent info is kept in this struct. Pointer to the 63 * struct for the current cpu is set up in locore.c. 64 */ 65 struct cpu_info; 66 67 struct cpu_dep { 68 void (*cpu_steal_pages)(void); /* pmap init before mm is on */ 69 int (*cpu_mchk)(void *); /* Machine check handling */ 70 void (*cpu_memerr)(void); /* Memory subsystem errors */ 71 /* Autoconfiguration */ 72 void (*cpu_conf)(void); 73 int (*cpu_gettime)(volatile struct timeval *); 74 /* Read cpu clock time */ 75 void (*cpu_settime)(volatile struct timeval *); 76 /* Write system time to cpu */ 77 short cpu_vups; /* speed of cpu */ 78 short cpu_scbsz; /* (estimated) size of system control block */ 79 void (*cpu_halt)(void); /* Cpu dependent halt call */ 80 void (*cpu_reboot)(int); /* Cpu dependent reboot call */ 81 void (*cpu_clrf)(void); /* Clear cold/warm start flags */ 82 void (*cpu_subconf)(struct device *);/*config cpu dep. devs */ 83 int cpu_flags; 84 void (*cpu_badaddr)(void); /* cpu-specific badaddr() */ 85 }; 86 87 #if defined(MULTIPROCESSOR) 88 /* 89 * All cpu-dependent calls for multicpu systems goes here. 90 */ 91 struct cpu_mp_dep { 92 void (*cpu_startslave)(struct device *, struct cpu_info *); 93 void (*cpu_send_ipi)(struct device *dest); 94 void (*cpu_cnintr)(void); 95 }; 96 /* 97 * NOTE: This is not bit mask, this is bit _number_. 98 */ 99 #define IPI_START_CNTX 1 /* Start console transmitter, proc out */ 100 #define IPI_SEND_CNCHAR 2 /* Write char to console, kernel printf */ 101 #define IPI_RUNNING 3 /* This CPU just started to run */ 102 #define IPI_TBIA 4 /* Flush the TLB */ 103 #define IPI_DDB 5 /* Jump into the DDB loop */ 104 105 #define IPI_DEST_MASTER -1 /* Destination is mastercpu */ 106 #define IPI_DEST_ALL -2 /* Broadcast */ 107 108 extern struct cpu_mp_dep *mp_dep_call; 109 #endif /* defined(MULTIPROCESSOR) */ 110 111 #define CPU_RAISEIPL 1 /* Must raise IPL until intr is handled */ 112 113 extern struct cpu_dep *dep_call; /* Holds pointer to current CPU struct. */ 114 115 struct clockframe { 116 int pc; 117 int ps; 118 }; 119 120 struct cpu_info { 121 /* 122 * Public members. 123 */ 124 struct cpu_data ci_data; /* MI per-cpu data */ 125 int ci_mtx_oldspl; /* saved spl */ 126 int ci_mtx_count; /* negative count of mutexes */ 127 128 /* 129 * Private members. 130 */ 131 int ci_want_resched; /* Should change process */ 132 struct device *ci_dev; /* device struct for this cpu */ 133 #if defined(__HAVE_FAST_SOFTINTS) 134 lwp_t *ci_softlwps[SOFTINT_COUNT]; 135 #endif 136 #if defined(MULTIPROCESSOR) 137 struct lwp *ci_curlwp; /* current lwp (for other cpus) */ 138 vaddr_t ci_istack; /* Interrupt stack location */ 139 int ci_flags; /* See below */ 140 long ci_ipimsgs; /* Sent IPI bits */ 141 struct trapframe *ci_ddb_regs; /* Used by DDB */ 142 SIMPLEQ_ENTRY(cpu_info) ci_next; /* next cpu_info */ 143 #endif 144 }; 145 #define CI_MASTERCPU 1 /* Set if master CPU */ 146 #define CI_RUNNING 2 /* Set when a slave CPU is running */ 147 #define CI_STOPPED 4 /* Stopped (in debugger) */ 148 149 extern int cpu_printfataltraps; 150 151 #if defined(MULTIPROCESSOR) 152 /* 153 * "helper" struct. All multicpu systems must have the first two field 154 * of its cpu softc like this. (used in multicpu.c). 155 */ 156 struct cpu_mp_softc { 157 struct device sc_dev; 158 struct cpu_info sc_ci; 159 }; 160 #endif /* defined(MULTIPROCESSOR) */ 161 162 /* XXX need to cache this in cpu_info */ 163 #define ci_cpuid ci_dev->dv_unit 164 #define curcpu() (curlwp->l_cpu + 0) 165 #define curlwp ((struct lwp *)mfpr(PR_SSP)) 166 #define cpu_number() (curcpu()->ci_cpuid) 167 #define cpu_need_resched(ci, flags) \ 168 do { \ 169 (ci)->ci_want_resched = 1; \ 170 mtpr(AST_OK,PR_ASTLVL); \ 171 } while (/*CONSTCOND*/ 0) 172 #define cpu_proc_fork(x, y) do { } while (/*CONSCOND*/0) 173 #define cpu_lwp_free(l, f) do { } while (/*CONSCOND*/0) 174 #define cpu_lwp_free2(l) do { } while (/*CONSCOND*/0) 175 #define cpu_idle() do { } while (/*CONSCOND*/0) 176 static inline bool 177 cpu_intr_p(void) 178 { 179 register_t psl; 180 __asm("movpsl %0" : "=g"(psl)); 181 return (psl & PSL_IS) != 0; 182 } 183 #if defined(MULTIPROCESSOR) 184 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CI_MASTERCPU) 185 186 #define CPU_INFO_ITERATOR int 187 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = SIMPLEQ_FIRST(&cpus); \ 188 ci != NULL; \ 189 ci = SIMPLEQ_NEXT(ci, ci_next) 190 191 extern SIMPLEQ_HEAD(cpu_info_qh, cpu_info) cpus; 192 extern char vax_mp_tramp; 193 #endif 194 195 /* 196 * Notify the current process (p) that it has a signal pending, 197 * process as soon as possible. 198 */ 199 200 #define cpu_signotify(l) mtpr(AST_OK,PR_ASTLVL) 201 202 203 /* 204 * Give a profiling tick to the current process when the user profiling 205 * buffer pages are invalid. On the hp300, request an ast to send us 206 * through trap, marking the proc as needing a profiling tick. 207 */ 208 #define cpu_need_proftick(l) do { (l)->l_pflag |= LP_OWEUPC; mtpr(AST_OK,PR_ASTLVL); } while (/*CONSTCOND*/ 0) 209 210 /* 211 * This defines the I/O device register space size in pages. 212 */ 213 #define IOSPSZ ((64*1024) / VAX_NBPG) /* 64k == 128 pages */ 214 215 struct device; 216 struct buf; 217 struct pte; 218 219 #include <sys/lwp.h> 220 221 /* Some low-level prototypes */ 222 #if defined(MULTIPROCESSOR) 223 void cpu_slavesetup(struct device *); 224 void cpu_boot_secondary_processors(void); 225 void cpu_send_ipi(int, int); 226 void cpu_handle_ipi(void); 227 #endif 228 int badaddr(volatile void *, int); 229 void dumpconf(void); 230 void dumpsys(void); 231 void swapconf(void); 232 void disk_printtype(int, int); 233 void disk_reallymapin(struct buf *, struct pte *, int, int); 234 vaddr_t vax_map_physmem(paddr_t, int); 235 void vax_unmap_physmem(vaddr_t, int); 236 void ioaccess(vaddr_t, paddr_t, int); 237 void iounaccess(vaddr_t, int); 238 void findcpu(void); 239 #ifdef DDB 240 int kdbrint(int); 241 #endif 242 #endif /* _KERNEL */ 243 #ifdef _STANDALONE 244 void findcpu(void); 245 #endif 246 #endif /* _VAX_CPU_H_ */ 247