1 /* $NetBSD: cpu.h,v 1.106 2022/12/11 18:02:40 oster 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef _VAX_CPU_H_ 29 #define _VAX_CPU_H_ 30 31 #if defined(_KERNEL_OPT) 32 #include "opt_gprof.h" 33 #include "opt_multiprocessor.h" 34 #include "opt_lockdebug.h" 35 #endif 36 37 #define CPU_PRINTFATALTRAPS 1 38 #define CPU_CONSDEV 2 39 #define CPU_BOOTED_DEVICE 3 40 #define CPU_BOOTED_KERNEL 4 41 42 #ifdef _KERNEL 43 44 #include <sys/cdefs.h> 45 #include <sys/queue.h> 46 #include <sys/device_if.h> 47 #include <sys/cpu_data.h> 48 49 #include <machine/mtpr.h> 50 #include <machine/pcb.h> 51 #include <machine/uvax.h> 52 #include <machine/psl.h> 53 54 #define enablertclock() 55 56 /* 57 * All cpu-dependent info is kept in this struct. Pointer to the 58 * struct for the current cpu is set up in locore.c. 59 */ 60 struct cpu_info; 61 62 struct cpu_dep { 63 void (*cpu_steal_pages)(void); /* pmap init before mm is on */ 64 int (*cpu_mchk)(void *); /* Machine check handling */ 65 void (*cpu_memerr)(void); /* Memory subsystem errors */ 66 /* Autoconfiguration */ 67 void (*cpu_conf)(void); 68 int (*cpu_gettime)(struct timeval *); /* Read cpu clock time */ 69 void (*cpu_settime)(struct timeval *); /* Write system time to cpu */ 70 short cpu_vups; /* speed of cpu */ 71 short cpu_scbsz; /* (estimated) size of SCB */ 72 void (*cpu_halt)(void); /* Cpu dependent halt call */ 73 void (*cpu_reboot)(int); /* Cpu dependent reboot call */ 74 void (*cpu_clrf)(void); /* Clear cold/warm start flags */ 75 const char * const *cpu_devs; /* mainbus devices */ 76 void (*cpu_attach_cpu)(device_t); /* print CPU info */ 77 int cpu_flags; 78 void (*cpu_badaddr)(void); /* cpu-specific badaddr() */ 79 }; 80 81 #if defined(MULTIPROCESSOR) 82 /* 83 * All cpu-dependent calls for multicpu systems goes here. 84 */ 85 struct cpu_mp_dep { 86 void (*cpu_startslave)(struct cpu_info *); 87 void (*cpu_send_ipi)(struct cpu_info *); 88 void (*cpu_cnintr)(void); 89 }; 90 /* 91 * NOTE: This is not bit mask, this is bit _number_. 92 */ 93 #define IPI_START_CNTX 1 /* Start console transmitter, proc out */ 94 #define IPI_SEND_CNCHAR 2 /* Write char to console, kernel printf */ 95 #define IPI_RUNNING 3 /* This CPU just started to run */ 96 #define IPI_TBIA 4 /* Flush the TLB */ 97 #define IPI_DDB 5 /* Jump into the DDB loop */ 98 #define IPI_XCALL 6 /* Helper for xcall(9) */ 99 #define IPI_GENERIC 7 /* Generic ipi(9) call */ 100 101 #define IPI_DEST_MASTER -1 /* Destination is mastercpu */ 102 #define IPI_DEST_ALL -2 /* Broadcast */ 103 104 extern const struct cpu_mp_dep *mp_dep_call; 105 #endif /* defined(MULTIPROCESSOR) */ 106 107 #define CPU_RAISEIPL 1 /* Must raise IPL until intr is handled */ 108 109 extern const struct cpu_dep *dep_call; 110 /* Holds pointer to current CPU struct. */ 111 112 struct clockframe { 113 int pc; 114 int ps; 115 }; 116 117 struct cpu_info { 118 /* 119 * Public members. 120 */ 121 struct cpu_data ci_data; /* MI per-cpu data */ 122 device_t ci_dev; /* device struct for this cpu */ 123 int ci_mtx_oldspl; /* saved spl */ 124 int ci_mtx_count; /* negative count of mutexes */ 125 int ci_cpuid; /* h/w specific cpu id */ 126 int ci_want_resched; /* Should change process */ 127 128 /* 129 * Private members. 130 */ 131 #if defined(__HAVE_FAST_SOFTINTS) 132 lwp_t *ci_softlwps[SOFTINT_COUNT]; 133 #endif 134 vaddr_t ci_istack; /* Interrupt stack location */ 135 const char *ci_cpustr; 136 int ci_slotid; /* cpu slot */ 137 struct lwp *ci_onproc; /* current user LWP / kthread */ 138 #if defined(MULTIPROCESSOR) 139 struct lwp *ci_curlwp; /* current lwp (for other cpus) */ 140 volatile int ci_flags; /* See below */ 141 long ci_ipimsgs; /* Sent IPI bits */ 142 struct trapframe *ci_ddb_regs; /* Used by DDB */ 143 SIMPLEQ_ENTRY(cpu_info) ci_next; /* next cpu_info */ 144 #endif 145 uintptr_t ci_cas_addr; /* current address doing CAS in a RAS */ 146 #if defined(GPROF) && defined(MULTIPROCESSOR) 147 struct gmonparam *ci_gmon; /* MI per-cpu GPROF */ 148 #endif 149 }; 150 #define CI_MASTERCPU 1 /* Set if master CPU */ 151 #define CI_RUNNING 2 /* Set when a slave CPU is running */ 152 #define CI_STOPPED 4 /* Stopped (in debugger) */ 153 154 extern int cpu_printfataltraps; 155 156 #define curcpu() (curlwp->l_cpu + 0) 157 #define curlwp ((struct lwp *)mfpr(PR_SSP)) 158 #define cpu_number() (curcpu()->ci_cpuid) 159 #define cpu_need_resched(ci, l, flags) \ 160 do { \ 161 struct pcb *pcb = lwp_getpcb(curlwp); \ 162 __USE(flags); \ 163 pcb->P0LR = (pcb->P0LR & ~AST_MASK) | AST_ON; \ 164 mtpr(AST_OK,PR_ASTLVL); \ 165 } while (/*CONSTCOND*/ 0) 166 #define cpu_proc_fork(x, y) do { } while (/*CONSCOND*/0) 167 168 /* 169 * This allows SIMH to recognize the kernel wants to sleep. 170 */ 171 static inline void 172 cpu_idle(void) 173 { 174 int ipl = mfpr(PR_IPL); 175 mtpr(1, PR_IPL); 176 mtpr(ipl, PR_IPL); 177 } 178 179 static inline bool 180 cpu_intr_p(void) 181 { 182 register_t psl; 183 __asm("movpsl %0" : "=g"(psl)); 184 return (psl & PSL_IS) != 0; 185 } 186 #if defined(MULTIPROCESSOR) 187 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CI_MASTERCPU) 188 189 #define CPU_INFO_ITERATOR int __unused 190 #define CPU_INFO_FOREACH(cii, ci) ci = SIMPLEQ_FIRST(&cpus); \ 191 ci != NULL; \ 192 ci = SIMPLEQ_NEXT(ci, ci_next) 193 194 extern SIMPLEQ_HEAD(cpu_info_qh, cpu_info) cpus; 195 extern char vax_mp_tramp; 196 #endif 197 198 /* 199 * Notify the current process (p) that it has a signal pending, 200 * process as soon as possible. 201 */ 202 203 #define cpu_signotify(l) \ 204 do { \ 205 struct pcb *pcb = lwp_getpcb(l); \ 206 pcb->P0LR = (pcb->P0LR & ~AST_MASK) | AST_ON; \ 207 mtpr(AST_OK,PR_ASTLVL); \ 208 } while (/*CONSTCOND*/ 0) 209 210 211 /* 212 * Give a profiling tick to the current process when the user profiling 213 * buffer pages are invalid. On the hp300, request an ast to send us 214 * through trap, marking the proc as needing a profiling tick. 215 */ 216 #define cpu_need_proftick(l) \ 217 do { \ 218 struct pcb *pcb = lwp_getpcb(l); \ 219 (l)->l_pflag |= LP_OWEUPC; \ 220 pcb->P0LR = (pcb->P0LR & ~AST_MASK) | AST_ON; \ 221 mtpr(AST_OK,PR_ASTLVL); \ 222 } while (/*CONSTCOND*/ 0) 223 224 /* 225 * This defines the I/O device register space size in pages. 226 */ 227 #define IOSPSZ ((64*1024) / VAX_NBPG) /* 64k == 128 pages */ 228 229 #define LWP_PC(l) cpu_lwp_pc(l) 230 231 struct buf; 232 struct pte; 233 234 #include <sys/lwp.h> 235 236 /* Some low-level prototypes */ 237 #if defined(MULTIPROCESSOR) 238 void cpu_slavesetup(device_t, int); 239 void cpu_boot_secondary_processors(void); 240 void cpu_send_ipi(int, int); 241 void cpu_handle_ipi(void); 242 #endif 243 vaddr_t cpu_lwp_pc(struct lwp *); 244 int badaddr(volatile void *, int); 245 void dumpsys(void); 246 void swapconf(void); 247 void disk_printtype(int, int); 248 void disk_reallymapin(struct buf *, struct pte *, int, int); 249 vaddr_t vax_map_physmem(paddr_t, size_t); 250 void vax_unmap_physmem(vaddr_t, size_t); 251 void ioaccess(vaddr_t, paddr_t, size_t); 252 void iounaccess(vaddr_t, size_t); 253 void findcpu(void); 254 #ifdef DDB 255 int kdbrint(int); 256 #endif 257 #endif /* _KERNEL */ 258 #ifdef _STANDALONE 259 void findcpu(void); 260 #endif 261 #endif /* _VAX_CPU_H_ */ 262