1 /* $OpenBSD: cpu.h,v 1.64 2015/07/02 01:33:59 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 66 #if defined(MULTIPROCESSOR) 67 #if !defined(MAX_CPUS) || MAX_CPUS > 4 68 #undef MAX_CPUS 69 #define MAX_CPUS 4 70 #endif 71 #else 72 #if !defined(MAX_CPUS) 73 #undef MAX_CPUS 74 #define MAX_CPUS 1 75 #endif 76 #endif 77 78 #ifndef _LOCORE 79 80 #include <machine/lock.h> 81 82 /* 83 * Per-CPU data structure 84 */ 85 86 struct pmap; 87 88 struct cpu_info { 89 u_int ci_flags; 90 #define CIF_ALIVE 0x01 /* cpu initialized */ 91 #define CIF_PRIMARY 0x02 /* primary cpu */ 92 93 struct proc *ci_curproc; /* current process... */ 94 struct pcb *ci_curpcb; /* ...its pcb... */ 95 struct pmap *ci_curpmap; /* ...and its pmap */ 96 97 u_int ci_cpuid; /* cpu number */ 98 99 #if defined(MULTIPROCESSOR) 100 struct srp_hazard ci_srp_hazards[SRP_HAZARD_NUM]; 101 #endif 102 103 /* 104 * Function pointers used within mplock to ensure 105 * non-interruptability. 106 */ 107 uint32_t (*ci_mp_atomic_begin) 108 (__cpu_simple_lock_t *lock, uint *csr); 109 void (*ci_mp_atomic_end) 110 (uint32_t psr, __cpu_simple_lock_t *lock, uint csr); 111 112 /* 113 * Other processor-dependent routines 114 */ 115 void (*ci_zeropage)(vaddr_t); 116 void (*ci_copypage)(vaddr_t, vaddr_t); 117 118 /* 119 * The following fields are used differently depending on 120 * the processor type. Think of them as an anonymous union 121 * of two anonymous structs. 122 */ 123 u_int ci_cpudep0; 124 u_int ci_cpudep1; 125 u_int ci_cpudep2; 126 u_int ci_cpudep3; 127 u_int ci_cpudep4; 128 u_int ci_cpudep5; 129 u_int ci_cpudep6; 130 u_int ci_cpudep7; 131 132 /* 88100 fields */ 133 #define ci_pfsr_i0 ci_cpudep0 /* instruction... */ 134 #define ci_pfsr_i1 ci_cpudep1 135 #define ci_pfsr_d0 ci_cpudep2 /* ...and data CMMU PFSRs */ 136 #define ci_pfsr_d1 ci_cpudep3 137 138 /* 88110 fields */ 139 #define ci_ipi_arg1 ci_cpudep0 /* Complex IPI arguments */ 140 #define ci_ipi_arg2 ci_cpudep1 141 #define ci_h_sxip ci_cpudep2 /* trapframe values */ 142 #define ci_h_epsr ci_cpudep3 /* for hardclock */ 143 #define ci_s_sxip ci_cpudep4 /* and softclock */ 144 #define ci_s_epsr ci_cpudep5 145 146 struct schedstate_percpu 147 ci_schedstate; /* scheduling state */ 148 int ci_want_resched; /* need_resched() invoked */ 149 150 u_int ci_intrdepth; /* interrupt depth */ 151 152 int ci_ddb_state; /* ddb status */ 153 #define CI_DDB_RUNNING 0 154 #define CI_DDB_ENTERDDB 1 155 #define CI_DDB_INDDB 2 156 #define CI_DDB_PAUSE 3 157 158 u_int32_t ci_randseed; /* per-cpu random seed */ 159 160 int ci_ipi; /* pending ipis */ 161 #define CI_IPI_NOTIFY 0x00000001 162 #define CI_IPI_HARDCLOCK 0x00000002 163 #define CI_IPI_STATCLOCK 0x00000004 164 #define CI_IPI_DDB 0x00000008 165 /* 88110 simple ipi */ 166 #define CI_IPI_TLB_FLUSH_KERNEL 0x00000010 167 #define CI_IPI_TLB_FLUSH_USER 0x00000020 168 /* 88110 complex ipi */ 169 #define CI_IPI_CACHE_FLUSH 0x00000040 170 #define CI_IPI_ICACHE_FLUSH 0x00000080 171 #define CI_IPI_DMA_CACHECTL 0x00000100 172 void (*ci_softipi_cb)(void); /* 88110 softipi callback */ 173 174 #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 void 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 #endif /* _LOCORE */ 233 234 /* 235 * definitions of cpu-dependent requirements 236 * referenced in generic code 237 */ 238 #define cpu_exec(p) do { /* nothing */ } while (0) 239 240 #define cpu_idle_enter() do { /* nothing */ } while (0) 241 #define cpu_idle_cycle() do { /* nothing */ } while (0) 242 #define cpu_idle_leave() do { /* nothing */ } while (0) 243 244 #if defined(MULTIPROCESSOR) 245 #include <sys/mplock.h> 246 #endif 247 248 /* 249 * Arguments to hardclock and gatherstats encapsulate the previous 250 * machine state in an opaque clockframe. CLKF_INTR is only valid 251 * if the process is in kernel mode. Clockframe is really trapframe, 252 * so pointer to clockframe can be safely cast into a pointer to 253 * trapframe. 254 */ 255 struct clockframe { 256 struct trapframe tf; 257 }; 258 259 #define CLKF_USERMODE(framep) (((framep)->tf.tf_epsr & PSR_MODE) == 0) 260 #define CLKF_PC(framep) ((framep)->tf.tf_sxip & XIP_ADDR) 261 #define CLKF_INTR(framep) \ 262 (((struct cpu_info *)(framep)->tf.tf_cpu)->ci_intrdepth > 1) 263 264 #define aston(p) ((p)->p_md.md_astpending = 1) 265 266 /* 267 * This is used during profiling to integrate system time. 268 */ 269 #define PC_REGS(regs) \ 270 (CPU_IS88110 ? ((regs)->exip & XIP_ADDR) : \ 271 ((regs)->sxip & XIP_V ? (regs)->sxip & XIP_ADDR : \ 272 ((regs)->snip & NIP_V ? (regs)->snip & NIP_ADDR : \ 273 (regs)->sfip & FIP_ADDR))) 274 #define PROC_PC(p) PC_REGS((struct reg *)((p)->p_md.md_tf)) 275 #define PROC_STACK(p) ((p)->p_md.md_tf->tf_sp) 276 277 #define clear_resched(ci) (ci)->ci_want_resched = 0 278 279 /* 280 * Give a profiling tick to the current process when the user profiling 281 * buffer pages are invalid. On the m88k, request an ast to send us 282 * through trap(), marking the proc as needing a profiling tick. 283 */ 284 #define need_proftick(p) aston(p) 285 286 void need_resched(struct cpu_info *); 287 void signotify(struct proc *); 288 void softipi(void); 289 290 int badaddr(vaddr_t addr, int size); 291 void set_vbr(register_t); 292 extern register_t kernel_vbr; 293 294 #endif /* _KERNEL */ 295 #endif /* _M88K_CPU_H_ */ 296