1 /* $OpenBSD: cpu.h,v 1.76 2024/02/25 19:15:50 cheloha Exp $ */ 2 /* 3 * Copyright (c) 1996 Nivas Madhur 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. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 */ 40 41 #ifndef _M88K_CPU_H_ 42 #define _M88K_CPU_H_ 43 44 /* 45 * CTL_MACHDEP definitions. 46 */ 47 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 48 #define CPU_CPUTYPE 2 /* int: cpu type */ 49 #define CPU_MAXID 3 /* number of valid machdep ids */ 50 51 #define CTL_MACHDEP_NAMES { \ 52 { 0, 0 }, \ 53 { "console_device", CTLTYPE_STRUCT }, \ 54 { "cputype", CTLTYPE_INT }, \ 55 } 56 57 #ifdef _KERNEL 58 59 #include <machine/atomic.h> 60 #include <machine/pcb.h> 61 #include <machine/psl.h> 62 #include <machine/intr.h> 63 #include <sys/clockintr.h> 64 #include <sys/queue.h> 65 #include <sys/sched.h> 66 #include <sys/srp.h> 67 68 #if defined(MULTIPROCESSOR) 69 #if !defined(MAX_CPUS) || MAX_CPUS > 4 70 #undef MAX_CPUS 71 #define MAX_CPUS 4 72 #endif 73 #else 74 #if !defined(MAX_CPUS) 75 #undef MAX_CPUS 76 #define MAX_CPUS 1 77 #endif 78 #endif 79 80 #ifndef _LOCORE 81 82 #include <machine/lock.h> 83 84 /* 85 * Per-CPU data structure 86 */ 87 88 struct pmap; 89 90 struct cpu_info { 91 u_int ci_flags; 92 #define CIF_ALIVE 0x01 /* cpu initialized */ 93 #define CIF_PRIMARY 0x02 /* primary cpu */ 94 95 struct proc *ci_curproc; /* current process... */ 96 struct pcb *ci_curpcb; /* ...its pcb... */ 97 struct pmap *ci_curpmap; /* ...and its pmap */ 98 99 u_int ci_cpuid; /* cpu number */ 100 101 /* 102 * Function pointers used within mplock to ensure 103 * non-interruptability. 104 */ 105 uint32_t (*ci_mp_atomic_begin) 106 (__cpu_simple_lock_t *lock, uint *csr); 107 void (*ci_mp_atomic_end) 108 (uint32_t psr, __cpu_simple_lock_t *lock, uint csr); 109 110 /* 111 * Other processor-dependent routines 112 */ 113 void (*ci_zeropage)(vaddr_t); 114 void (*ci_copypage)(vaddr_t, vaddr_t); 115 116 /* 117 * The following fields are used differently depending on 118 * the processor type. Think of them as an anonymous union 119 * of two anonymous structs. 120 */ 121 u_int ci_cpudep0; 122 u_int ci_cpudep1; 123 u_int ci_cpudep2; 124 u_int ci_cpudep3; 125 u_int ci_cpudep4; 126 u_int ci_cpudep5; 127 u_int ci_cpudep6; 128 u_int ci_cpudep7; 129 130 /* 88100 fields */ 131 #define ci_pfsr_i0 ci_cpudep0 /* instruction... */ 132 #define ci_pfsr_i1 ci_cpudep1 133 #define ci_pfsr_d0 ci_cpudep2 /* ...and data CMMU PFSRs */ 134 #define ci_pfsr_d1 ci_cpudep3 135 136 /* 88110 fields */ 137 #define ci_ipi_arg1 ci_cpudep0 /* Complex IPI arguments */ 138 #define ci_ipi_arg2 ci_cpudep1 139 #define ci_h_sxip ci_cpudep2 /* trapframe values */ 140 #define ci_h_epsr ci_cpudep3 /* for hardclock */ 141 #define ci_s_sxip ci_cpudep4 /* and softclock */ 142 #define ci_s_epsr ci_cpudep5 143 144 struct schedstate_percpu 145 ci_schedstate; /* scheduling state */ 146 int ci_want_resched; /* need_resched() invoked */ 147 148 u_int ci_intrdepth; /* interrupt depth */ 149 150 int ci_ddb_state; /* ddb status */ 151 #define CI_DDB_RUNNING 0 152 #define CI_DDB_ENTERDDB 1 153 #define CI_DDB_INDDB 2 154 #define CI_DDB_PAUSE 3 155 156 u_int32_t ci_randseed; /* per-cpu random seed */ 157 158 int ci_ipi; /* pending ipis */ 159 #define CI_IPI_NOTIFY 0x00000001 160 #define CI_IPI_HARDCLOCK 0x00000002 161 #define CI_IPI_STATCLOCK 0x00000004 162 #define CI_IPI_DDB 0x00000008 163 /* 88110 simple ipi */ 164 #define CI_IPI_TLB_FLUSH_KERNEL 0x00000010 165 #define CI_IPI_TLB_FLUSH_USER 0x00000020 166 /* 88110 complex ipi */ 167 #define CI_IPI_CACHE_FLUSH 0x00000040 168 #define CI_IPI_ICACHE_FLUSH 0x00000080 169 #define CI_IPI_DMA_CACHECTL 0x00000100 170 void (*ci_softipi_cb)(void); /* 88110 softipi callback */ 171 172 #if defined(MULTIPROCESSOR) 173 struct srp_hazard ci_srp_hazards[SRP_HAZARD_NUM]; 174 #endif 175 #ifdef DIAGNOSTIC 176 int ci_mutex_level; 177 #endif 178 #ifdef GPROF 179 struct gmonparam *ci_gmon; 180 struct clockintr ci_gmonclock; 181 #endif 182 struct clockqueue ci_queue; 183 char ci_panicbuf[512]; 184 }; 185 186 extern cpuid_t master_cpu; 187 extern struct cpu_info m88k_cpus[MAX_CPUS]; 188 189 #define CPU_INFO_ITERATOR cpuid_t 190 #define CPU_INFO_FOREACH(cii, ci) \ 191 for ((cii) = 0; (cii) < MAX_CPUS; (cii)++) \ 192 if (((ci) = &m88k_cpus[cii])->ci_flags & CIF_ALIVE) 193 #define CPU_INFO_UNIT(ci) ((ci)->ci_cpuid) 194 #define MAXCPUS MAX_CPUS 195 196 #if defined(MULTIPROCESSOR) 197 198 static __inline__ struct cpu_info * 199 curcpu(void) 200 { 201 struct cpu_info *cpuptr; 202 203 __asm__ volatile ("ldcr %0, %%cr17" : "=r" (cpuptr)); 204 return cpuptr; 205 } 206 207 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CIF_PRIMARY) 208 #define CPU_IS_RUNNING(ci) ((ci)->ci_flags & CIF_ALIVE) 209 210 void cpu_boot_secondary_processors(void); 211 __dead void cpu_emergency_disable(void); 212 void cpu_unidle(struct cpu_info *); 213 void m88k_send_ipi(int, cpuid_t); 214 void m88k_broadcast_ipi(int); 215 216 #else /* MULTIPROCESSOR */ 217 218 #define curcpu() (&m88k_cpus[0]) 219 #define cpu_unidle(ci) do { /* nothing */ } while (0) 220 #define CPU_IS_PRIMARY(ci) 1 221 #define CPU_IS_RUNNING(ci) 1 222 223 #endif /* MULTIPROCESSOR */ 224 225 #define CPU_BUSY_CYCLE() do {} while (0) 226 227 struct cpu_info *set_cpu_number(cpuid_t); 228 229 /* 230 * The md code may hardcode this in some very specific situations. 231 */ 232 #if !defined(cpu_number) 233 #define cpu_number() curcpu()->ci_cpuid 234 #endif 235 236 #define curpcb curcpu()->ci_curpcb 237 238 unsigned int cpu_rnd_messybits(void); 239 240 #endif /* _LOCORE */ 241 242 /* 243 * definitions of cpu-dependent requirements 244 * referenced in generic code 245 */ 246 247 #define cpu_idle_enter() do { /* nothing */ } while (0) 248 #define cpu_idle_cycle() do { /* nothing */ } while (0) 249 #define cpu_idle_leave() do { /* nothing */ } while (0) 250 251 #if defined(MULTIPROCESSOR) 252 #include <sys/mplock.h> 253 #endif 254 255 /* 256 * Arguments to hardclock and gatherstats encapsulate the previous 257 * machine state in an opaque clockframe. CLKF_INTR is only valid 258 * if the process is in kernel mode. Clockframe is really trapframe, 259 * so pointer to clockframe can be safely cast into a pointer to 260 * trapframe. 261 */ 262 struct clockframe { 263 struct trapframe tf; 264 }; 265 266 #define CLKF_USERMODE(framep) (((framep)->tf.tf_epsr & PSR_MODE) == 0) 267 #define CLKF_PC(framep) ((framep)->tf.tf_sxip & XIP_ADDR) 268 #define CLKF_INTR(framep) \ 269 (((struct cpu_info *)(framep)->tf.tf_cpu)->ci_intrdepth > 1) 270 271 #define aston(p) ((p)->p_md.md_astpending = 1) 272 273 /* 274 * This is used during profiling to integrate system time. 275 */ 276 #define PC_REGS(regs) \ 277 (CPU_IS88110 ? ((regs)->exip & XIP_ADDR) : \ 278 ((regs)->sxip & XIP_V ? (regs)->sxip & XIP_ADDR : \ 279 ((regs)->snip & NIP_V ? (regs)->snip & NIP_ADDR : \ 280 (regs)->sfip & FIP_ADDR))) 281 #define PROC_PC(p) PC_REGS((struct reg *)((p)->p_md.md_tf)) 282 #define PROC_STACK(p) ((p)->p_md.md_tf->tf_sp) 283 284 #define clear_resched(ci) (ci)->ci_want_resched = 0 285 286 /* 287 * Give a profiling tick to the current process when the user profiling 288 * buffer pages are invalid. On the m88k, request an ast to send us 289 * through trap(), marking the proc as needing a profiling tick. 290 */ 291 #define need_proftick(p) aston(p) 292 293 void need_resched(struct cpu_info *); 294 void signotify(struct proc *); 295 void softipi(void); 296 297 int badaddr(vaddr_t addr, int size); 298 void set_vbr(register_t); 299 extern register_t kernel_vbr; 300 301 #define copyinsn(p, v, ip) copyin32((v), (ip)) 302 303 #endif /* _KERNEL */ 304 #endif /* _M88K_CPU_H_ */ 305