1 /* $OpenBSD: cpu.h,v 1.53 2011/03/23 16:54:35 pirofti 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 /* 100 * Function pointers used within mplock to ensure 101 * non-interruptability. 102 */ 103 uint32_t (*ci_mp_atomic_begin) 104 (__cpu_simple_lock_t *lock, uint *csr); 105 void (*ci_mp_atomic_end) 106 (uint32_t psr, __cpu_simple_lock_t *lock, uint csr); 107 108 /* 109 * Other processor-dependent routines 110 */ 111 void (*ci_zeropage)(vaddr_t); 112 void (*ci_copypage)(vaddr_t, vaddr_t); 113 114 /* 115 * The following fields are used differently depending on 116 * the processor type. Think of them as an anonymous union 117 * of two anonymous structs. 118 */ 119 u_int ci_cpudep0; 120 u_int ci_cpudep1; 121 u_int ci_cpudep2; 122 u_int ci_cpudep3; 123 u_int ci_cpudep4; 124 u_int ci_cpudep5; 125 u_int ci_cpudep6; 126 u_int ci_cpudep7; 127 128 /* 88100 fields */ 129 #define ci_pfsr_i0 ci_cpudep0 /* instruction... */ 130 #define ci_pfsr_i1 ci_cpudep1 131 #define ci_pfsr_d0 ci_cpudep2 /* ...and data CMMU PFSRs */ 132 #define ci_pfsr_d1 ci_cpudep3 133 134 /* 88110 fields */ 135 #define ci_ipi_arg1 ci_cpudep0 /* Complex IPI arguments */ 136 #define ci_ipi_arg2 ci_cpudep1 137 #define ci_h_sxip ci_cpudep2 /* trapframe values */ 138 #define ci_h_epsr ci_cpudep3 /* for hardclock */ 139 #define ci_s_sxip ci_cpudep4 /* and softclock */ 140 #define ci_s_epsr ci_cpudep5 141 #define ci_pmap_ipi ci_cpudep6 /* delayed pmap tlb ipi */ 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 u_long ci_spin_locks; /* spin locks counter */ 150 151 int ci_ddb_state; /* ddb status */ 152 #define CI_DDB_RUNNING 0 153 #define CI_DDB_ENTERDDB 1 154 #define CI_DDB_INDDB 2 155 #define CI_DDB_PAUSE 3 156 157 u_int32_t ci_randseed; /* per-cpu random seed */ 158 159 int ci_ipi; /* pending ipis */ 160 #define CI_IPI_NOTIFY 0x00000001 161 #define CI_IPI_HARDCLOCK 0x00000002 162 #define CI_IPI_STATCLOCK 0x00000004 163 #define CI_IPI_DDB 0x00000008 164 /* 88110 simple ipi */ 165 #define CI_IPI_TLB_FLUSH_KERNEL 0x00000010 166 #define CI_IPI_TLB_FLUSH_USER 0x00000020 167 /* 88110 complex ipi */ 168 #define CI_IPI_CACHE_FLUSH 0x00000040 169 #define CI_IPI_ICACHE_FLUSH 0x00000080 170 #define CI_IPI_DMA_CACHECTL 0x00000100 171 void (*ci_softipi_cb)(void); /* 88110 softipi callback */ 172 173 #ifdef DIAGNOSTIC 174 int ci_mutex_level; 175 #endif 176 }; 177 178 extern cpuid_t master_cpu; 179 extern struct cpu_info m88k_cpus[MAX_CPUS]; 180 181 #define CPU_INFO_ITERATOR cpuid_t 182 #define CPU_INFO_FOREACH(cii, ci) \ 183 for ((cii) = 0; (cii) < MAX_CPUS; (cii)++) \ 184 if (((ci) = &m88k_cpus[cii])->ci_flags & CIF_ALIVE) 185 #define CPU_INFO_UNIT(ci) ((ci)->ci_cpuid) 186 #define MAXCPUS MAX_CPUS 187 188 #if defined(MULTIPROCESSOR) 189 190 static __inline__ struct cpu_info * 191 curcpu(void) 192 { 193 struct cpu_info *cpuptr; 194 195 __asm__ __volatile__ ("ldcr %0, cr17" : "=r" (cpuptr)); 196 return cpuptr; 197 } 198 199 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CIF_PRIMARY) 200 201 void cpu_boot_secondary_processors(void); 202 __dead void cpu_emergency_disable(void); 203 void cpu_unidle(struct cpu_info *); 204 void m88k_send_ipi(int, cpuid_t); 205 void m88k_broadcast_ipi(int); 206 207 #else /* MULTIPROCESSOR */ 208 209 #define curcpu() (&m88k_cpus[0]) 210 #define cpu_unidle(ci) do { /* nothing */ } while (0) 211 #define CPU_IS_PRIMARY(ci) 1 212 213 #endif /* MULTIPROCESSOR */ 214 215 void set_cpu_number(cpuid_t); 216 217 /* 218 * The md code may hardcode this in some very specific situations. 219 */ 220 #if !defined(cpu_number) 221 #define cpu_number() curcpu()->ci_cpuid 222 #endif 223 224 #define curpcb curcpu()->ci_curpcb 225 226 #endif /* _LOCORE */ 227 228 /* 229 * definitions of cpu-dependent requirements 230 * referenced in generic code 231 */ 232 #define cpu_exec(p) do { /* nothing */ } while (0) 233 234 #define cpu_idle_enter() do { /* nothing */ } while (0) 235 #define cpu_idle_cycle() do { /* nothing */ } while (0) 236 #define cpu_idle_leave() do { /* nothing */ } while (0) 237 238 #if defined(MULTIPROCESSOR) 239 #include <sys/lock.h> 240 #include <sys/mplock.h> 241 #endif 242 243 /* 244 * Arguments to hardclock and gatherstats encapsulate the previous 245 * machine state in an opaque clockframe. CLKF_INTR is only valid 246 * if the process is in kernel mode. Clockframe is really trapframe, 247 * so pointer to clockframe can be safely cast into a pointer to 248 * trapframe. 249 */ 250 struct clockframe { 251 struct trapframe tf; 252 }; 253 254 #define CLKF_USERMODE(framep) (((framep)->tf.tf_epsr & PSR_MODE) == 0) 255 #define CLKF_PC(framep) ((framep)->tf.tf_sxip & XIP_ADDR) 256 #define CLKF_INTR(framep) \ 257 (((struct cpu_info *)(framep)->tf.tf_cpu)->ci_intrdepth > 1) 258 259 #define aston(p) ((p)->p_md.md_astpending = 1) 260 261 /* 262 * This is used during profiling to integrate system time. 263 */ 264 #define PC_REGS(regs) \ 265 (CPU_IS88110 ? ((regs)->exip & XIP_ADDR) : \ 266 ((regs)->sxip & XIP_V ? (regs)->sxip & XIP_ADDR : \ 267 ((regs)->snip & NIP_V ? (regs)->snip & NIP_ADDR : \ 268 (regs)->sfip & FIP_ADDR))) 269 #define PROC_PC(p) PC_REGS((struct reg *)((p)->p_md.md_tf)) 270 271 #define clear_resched(ci) (ci)->ci_want_resched = 0 272 273 /* 274 * Give a profiling tick to the current process when the user profiling 275 * buffer pages are invalid. On the m88k, request an ast to send us 276 * through trap(), marking the proc as needing a profiling tick. 277 */ 278 #define need_proftick(p) aston(p) 279 280 void need_resched(struct cpu_info *); 281 void signotify(struct proc *); 282 void softipi(void); 283 284 int badaddr(vaddr_t addr, int size); 285 void set_vbr(register_t); 286 extern register_t kernel_vbr; 287 288 #endif /* _KERNEL */ 289 #endif /* _M88K_CPU_H_ */ 290