1 /* $NetBSD: cpu.h,v 1.85 2008/03/11 05:34:02 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 #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 SCB */ 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 const char * const *cpu_devs; /* mainbus devices */ 83 void (*cpu_attach_cpu)(device_t); /* print CPU info */ 84 void (*cpu_subconf)(device_t, void *, cfprint_t); /* attach dep. dev */ 85 int cpu_flags; 86 void (*cpu_badaddr)(void); /* cpu-specific badaddr() */ 87 }; 88 89 #if defined(MULTIPROCESSOR) 90 /* 91 * All cpu-dependent calls for multicpu systems goes here. 92 */ 93 struct cpu_mp_dep { 94 void (*cpu_startslave)(struct cpu_info *); 95 void (*cpu_send_ipi)(struct cpu_info *); 96 void (*cpu_cnintr)(void); 97 }; 98 /* 99 * NOTE: This is not bit mask, this is bit _number_. 100 */ 101 #define IPI_START_CNTX 1 /* Start console transmitter, proc out */ 102 #define IPI_SEND_CNCHAR 2 /* Write char to console, kernel printf */ 103 #define IPI_RUNNING 3 /* This CPU just started to run */ 104 #define IPI_TBIA 4 /* Flush the TLB */ 105 #define IPI_DDB 5 /* Jump into the DDB loop */ 106 107 #define IPI_DEST_MASTER -1 /* Destination is mastercpu */ 108 #define IPI_DEST_ALL -2 /* Broadcast */ 109 110 extern const struct cpu_mp_dep *mp_dep_call; 111 #endif /* defined(MULTIPROCESSOR) */ 112 113 #define CPU_RAISEIPL 1 /* Must raise IPL until intr is handled */ 114 115 extern const struct cpu_dep *dep_call; 116 /* Holds pointer to current CPU struct. */ 117 118 struct clockframe { 119 int pc; 120 int ps; 121 }; 122 123 struct cpu_info { 124 /* 125 * Public members. 126 */ 127 struct cpu_data ci_data; /* MI per-cpu data */ 128 struct device *ci_dev; /* device struct for this cpu */ 129 int ci_mtx_oldspl; /* saved spl */ 130 int ci_mtx_count; /* negative count of mutexes */ 131 int ci_cpuid; /* h/w specific cpu id */ 132 int ci_want_resched; /* Should change process */ 133 134 /* 135 * Private members. 136 */ 137 #if defined(__HAVE_FAST_SOFTINTS) 138 lwp_t *ci_softlwps[SOFTINT_COUNT]; 139 #endif 140 vaddr_t ci_istack; /* Interrupt stack location */ 141 const char *ci_cpustr; 142 int ci_slotid; /* cpu slot */ 143 #if defined(MULTIPROCESSOR) 144 struct lwp *ci_curlwp; /* current lwp (for other cpus) */ 145 volatile int ci_flags; /* See below */ 146 long ci_ipimsgs; /* Sent IPI bits */ 147 struct trapframe *ci_ddb_regs; /* Used by DDB */ 148 SIMPLEQ_ENTRY(cpu_info) ci_next; /* next cpu_info */ 149 #endif 150 }; 151 #define CI_MASTERCPU 1 /* Set if master CPU */ 152 #define CI_RUNNING 2 /* Set when a slave CPU is running */ 153 #define CI_STOPPED 4 /* Stopped (in debugger) */ 154 155 extern int cpu_printfataltraps; 156 157 #define curcpu() (curlwp->l_cpu + 0) 158 #define curlwp ((struct lwp *)mfpr(PR_SSP)) 159 #define cpu_number() (curcpu()->ci_cpuid) 160 #define cpu_need_resched(ci, flags) \ 161 do { \ 162 (ci)->ci_want_resched = 1; \ 163 mtpr(AST_OK,PR_ASTLVL); \ 164 } while (/*CONSTCOND*/ 0) 165 #define cpu_proc_fork(x, y) do { } while (/*CONSCOND*/0) 166 #define cpu_lwp_free(l, f) do { } while (/*CONSCOND*/0) 167 #define cpu_lwp_free2(l) do { } while (/*CONSCOND*/0) 168 #define cpu_idle() do { } while (/*CONSCOND*/0) 169 static inline bool 170 cpu_intr_p(void) 171 { 172 register_t psl; 173 __asm("movpsl %0" : "=g"(psl)); 174 return (psl & PSL_IS) != 0; 175 } 176 #if defined(MULTIPROCESSOR) 177 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CI_MASTERCPU) 178 179 #define CPU_INFO_ITERATOR int 180 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = SIMPLEQ_FIRST(&cpus); \ 181 ci != NULL; \ 182 ci = SIMPLEQ_NEXT(ci, ci_next) 183 184 extern SIMPLEQ_HEAD(cpu_info_qh, cpu_info) cpus; 185 extern char vax_mp_tramp; 186 #endif 187 188 /* 189 * Notify the current process (p) that it has a signal pending, 190 * process as soon as possible. 191 */ 192 193 #define cpu_signotify(l) mtpr(AST_OK,PR_ASTLVL) 194 195 196 /* 197 * Give a profiling tick to the current process when the user profiling 198 * buffer pages are invalid. On the hp300, request an ast to send us 199 * through trap, marking the proc as needing a profiling tick. 200 */ 201 #define cpu_need_proftick(l) do { (l)->l_pflag |= LP_OWEUPC; mtpr(AST_OK,PR_ASTLVL); } while (/*CONSTCOND*/ 0) 202 203 /* 204 * This defines the I/O device register space size in pages. 205 */ 206 #define IOSPSZ ((64*1024) / VAX_NBPG) /* 64k == 128 pages */ 207 208 struct device; 209 struct buf; 210 struct pte; 211 212 #include <sys/lwp.h> 213 214 /* Some low-level prototypes */ 215 #if defined(MULTIPROCESSOR) 216 void cpu_slavesetup(device_t, int); 217 void cpu_boot_secondary_processors(void); 218 void cpu_send_ipi(int, int); 219 void cpu_handle_ipi(void); 220 #endif 221 int badaddr(volatile void *, int); 222 void dumpconf(void); 223 void dumpsys(void); 224 void swapconf(void); 225 void disk_printtype(int, int); 226 void disk_reallymapin(struct buf *, struct pte *, int, int); 227 vaddr_t vax_map_physmem(paddr_t, size_t); 228 void vax_unmap_physmem(vaddr_t, size_t); 229 void ioaccess(vaddr_t, paddr_t, size_t); 230 void iounaccess(vaddr_t, size_t); 231 void findcpu(void); 232 #ifdef DDB 233 int kdbrint(int); 234 #endif 235 #endif /* _KERNEL */ 236 #ifdef _STANDALONE 237 void findcpu(void); 238 #endif 239 #endif /* _VAX_CPU_H_ */ 240