1 /* $OpenBSD: cpu.h,v 1.68 2020/05/31 06:23:57 dlg 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/queue.h> 64 #include <sys/sched.h> 65 #include <sys/srp.h> 66 67 #if defined(MULTIPROCESSOR) 68 #if !defined(MAX_CPUS) || MAX_CPUS > 4 69 #undef MAX_CPUS 70 #define MAX_CPUS 4 71 #endif 72 #else 73 #if !defined(MAX_CPUS) 74 #undef MAX_CPUS 75 #define MAX_CPUS 1 76 #endif 77 #endif 78 79 #ifndef _LOCORE 80 81 #include <machine/lock.h> 82 83 /* 84 * Per-CPU data structure 85 */ 86 87 struct pmap; 88 89 struct cpu_info { 90 u_int ci_flags; 91 #define CIF_ALIVE 0x01 /* cpu initialized */ 92 #define CIF_PRIMARY 0x02 /* primary cpu */ 93 94 struct proc *ci_curproc; /* current process... */ 95 struct pcb *ci_curpcb; /* ...its pcb... */ 96 struct pmap *ci_curpmap; /* ...and its pmap */ 97 98 u_int ci_cpuid; /* cpu number */ 99 100 /* 101 * Function pointers used within mplock to ensure 102 * non-interruptability. 103 */ 104 uint32_t (*ci_mp_atomic_begin) 105 (__cpu_simple_lock_t *lock, uint *csr); 106 void (*ci_mp_atomic_end) 107 (uint32_t psr, __cpu_simple_lock_t *lock, uint csr); 108 109 /* 110 * Other processor-dependent routines 111 */ 112 void (*ci_zeropage)(vaddr_t); 113 void (*ci_copypage)(vaddr_t, vaddr_t); 114 115 /* 116 * The following fields are used differently depending on 117 * the processor type. Think of them as an anonymous union 118 * of two anonymous structs. 119 */ 120 u_int ci_cpudep0; 121 u_int ci_cpudep1; 122 u_int ci_cpudep2; 123 u_int ci_cpudep3; 124 u_int ci_cpudep4; 125 u_int ci_cpudep5; 126 u_int ci_cpudep6; 127 u_int ci_cpudep7; 128 129 /* 88100 fields */ 130 #define ci_pfsr_i0 ci_cpudep0 /* instruction... */ 131 #define ci_pfsr_i1 ci_cpudep1 132 #define ci_pfsr_d0 ci_cpudep2 /* ...and data CMMU PFSRs */ 133 #define ci_pfsr_d1 ci_cpudep3 134 135 /* 88110 fields */ 136 #define ci_ipi_arg1 ci_cpudep0 /* Complex IPI arguments */ 137 #define ci_ipi_arg2 ci_cpudep1 138 #define ci_h_sxip ci_cpudep2 /* trapframe values */ 139 #define ci_h_epsr ci_cpudep3 /* for hardclock */ 140 #define ci_s_sxip ci_cpudep4 /* and softclock */ 141 #define ci_s_epsr ci_cpudep5 142 143 struct schedstate_percpu 144 ci_schedstate; /* scheduling state */ 145 int ci_want_resched; /* need_resched() invoked */ 146 147 u_int ci_intrdepth; /* interrupt depth */ 148 149 int ci_ddb_state; /* ddb status */ 150 #define CI_DDB_RUNNING 0 151 #define CI_DDB_ENTERDDB 1 152 #define CI_DDB_INDDB 2 153 #define CI_DDB_PAUSE 3 154 155 u_int32_t ci_randseed; /* per-cpu random seed */ 156 157 int ci_ipi; /* pending ipis */ 158 #define CI_IPI_NOTIFY 0x00000001 159 #define CI_IPI_HARDCLOCK 0x00000002 160 #define CI_IPI_STATCLOCK 0x00000004 161 #define CI_IPI_DDB 0x00000008 162 /* 88110 simple ipi */ 163 #define CI_IPI_TLB_FLUSH_KERNEL 0x00000010 164 #define CI_IPI_TLB_FLUSH_USER 0x00000020 165 /* 88110 complex ipi */ 166 #define CI_IPI_CACHE_FLUSH 0x00000040 167 #define CI_IPI_ICACHE_FLUSH 0x00000080 168 #define CI_IPI_DMA_CACHECTL 0x00000100 169 void (*ci_softipi_cb)(void); /* 88110 softipi callback */ 170 171 #if defined(MULTIPROCESSOR) 172 struct srp_hazard ci_srp_hazards[SRP_HAZARD_NUM]; 173 #endif 174 #ifdef DIAGNOSTIC 175 int ci_mutex_level; 176 #endif 177 #ifdef GPROF 178 struct gmonparam *ci_gmon; 179 #endif 180 }; 181 182 extern cpuid_t master_cpu; 183 extern struct cpu_info m88k_cpus[MAX_CPUS]; 184 185 #define CPU_INFO_ITERATOR cpuid_t 186 #define CPU_INFO_FOREACH(cii, ci) \ 187 for ((cii) = 0; (cii) < MAX_CPUS; (cii)++) \ 188 if (((ci) = &m88k_cpus[cii])->ci_flags & CIF_ALIVE) 189 #define CPU_INFO_UNIT(ci) ((ci)->ci_cpuid) 190 #define MAXCPUS MAX_CPUS 191 192 #if defined(MULTIPROCESSOR) 193 194 static __inline__ struct cpu_info * 195 curcpu(void) 196 { 197 struct cpu_info *cpuptr; 198 199 __asm__ volatile ("ldcr %0, %%cr17" : "=r" (cpuptr)); 200 return cpuptr; 201 } 202 203 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CIF_PRIMARY) 204 205 void cpu_boot_secondary_processors(void); 206 __dead void cpu_emergency_disable(void); 207 void cpu_unidle(struct cpu_info *); 208 void m88k_send_ipi(int, cpuid_t); 209 void m88k_broadcast_ipi(int); 210 211 #else /* MULTIPROCESSOR */ 212 213 #define curcpu() (&m88k_cpus[0]) 214 #define cpu_unidle(ci) do { /* nothing */ } while (0) 215 #define CPU_IS_PRIMARY(ci) 1 216 217 #endif /* MULTIPROCESSOR */ 218 219 #define CPU_BUSY_CYCLE() do {} while (0) 220 221 struct cpu_info *set_cpu_number(cpuid_t); 222 223 /* 224 * The md code may hardcode this in some very specific situations. 225 */ 226 #if !defined(cpu_number) 227 #define cpu_number() curcpu()->ci_cpuid 228 #endif 229 230 #define curpcb curcpu()->ci_curpcb 231 232 unsigned int cpu_rnd_messybits(void); 233 234 #endif /* _LOCORE */ 235 236 /* 237 * definitions of cpu-dependent requirements 238 * referenced in generic code 239 */ 240 #define cpu_exec(p) do { /* nothing */ } while (0) 241 242 #define cpu_idle_enter() do { /* nothing */ } while (0) 243 #define cpu_idle_cycle() do { /* nothing */ } while (0) 244 #define cpu_idle_leave() do { /* nothing */ } while (0) 245 246 #if defined(MULTIPROCESSOR) 247 #include <sys/mplock.h> 248 #endif 249 250 /* 251 * Arguments to hardclock and gatherstats encapsulate the previous 252 * machine state in an opaque clockframe. CLKF_INTR is only valid 253 * if the process is in kernel mode. Clockframe is really trapframe, 254 * so pointer to clockframe can be safely cast into a pointer to 255 * trapframe. 256 */ 257 struct clockframe { 258 struct trapframe tf; 259 }; 260 261 #define CLKF_USERMODE(framep) (((framep)->tf.tf_epsr & PSR_MODE) == 0) 262 #define CLKF_PC(framep) ((framep)->tf.tf_sxip & XIP_ADDR) 263 #define CLKF_INTR(framep) \ 264 (((struct cpu_info *)(framep)->tf.tf_cpu)->ci_intrdepth > 1) 265 266 #define aston(p) ((p)->p_md.md_astpending = 1) 267 268 /* 269 * This is used during profiling to integrate system time. 270 */ 271 #define PC_REGS(regs) \ 272 (CPU_IS88110 ? ((regs)->exip & XIP_ADDR) : \ 273 ((regs)->sxip & XIP_V ? (regs)->sxip & XIP_ADDR : \ 274 ((regs)->snip & NIP_V ? (regs)->snip & NIP_ADDR : \ 275 (regs)->sfip & FIP_ADDR))) 276 #define PROC_PC(p) PC_REGS((struct reg *)((p)->p_md.md_tf)) 277 #define PROC_STACK(p) ((p)->p_md.md_tf->tf_sp) 278 279 #define clear_resched(ci) (ci)->ci_want_resched = 0 280 281 /* 282 * Give a profiling tick to the current process when the user profiling 283 * buffer pages are invalid. On the m88k, request an ast to send us 284 * through trap(), marking the proc as needing a profiling tick. 285 */ 286 #define need_proftick(p) aston(p) 287 288 void need_resched(struct cpu_info *); 289 void signotify(struct proc *); 290 void softipi(void); 291 292 int badaddr(vaddr_t addr, int size); 293 void set_vbr(register_t); 294 extern register_t kernel_vbr; 295 296 #endif /* _KERNEL */ 297 #endif /* _M88K_CPU_H_ */ 298