1 /* $NetBSD: cpu.h,v 1.104 2021/08/14 17:51:18 ryo Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center, and by Charles M. Hannum. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1988 University of Utah. 35 * Copyright (c) 1982, 1990, 1993 36 * The Regents of the University of California. All rights reserved. 37 * 38 * This code is derived from software contributed to Berkeley by 39 * the Systems Programming Group of the University of Utah Computer 40 * Science Department. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 67 * 68 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 69 */ 70 71 #ifndef _ALPHA_CPU_H_ 72 #define _ALPHA_CPU_H_ 73 74 #if defined(_KERNEL_OPT) 75 #include "opt_gprof.h" 76 #include "opt_multiprocessor.h" 77 #include "opt_lockdebug.h" 78 #endif 79 80 /* 81 * Exported definitions unique to Alpha cpu support. 82 */ 83 84 #include <machine/alpha_cpu.h> 85 86 #if defined(_KERNEL) || defined(_KMEMUSER) 87 #include <sys/cpu_data.h> 88 #include <sys/cctr.h> 89 #include <sys/intr.h> 90 #include <machine/frame.h> 91 92 /* 93 * Machine check information. 94 */ 95 struct mchkinfo { 96 volatile int mc_expected; /* machine check is expected */ 97 volatile int mc_received; /* machine check was received */ 98 }; 99 100 /* 101 * Per-cpu information. Data accessed by MI code is marked [MI]. 102 */ 103 struct cpu_info { 104 struct cpu_data ci_data; /* [MI] general per-cpu data */ 105 struct lwp *ci_curlwp; /* [MI] current owner of the cpu */ 106 struct lwp *ci_onproc; /* [MI] current user LWP / kthread */ 107 struct cctr_state ci_cc; /* [MI] cycle counter state */ 108 109 volatile int ci_mtx_count; /* [MI] neg count of spin mutexes */ 110 volatile int ci_mtx_oldspl; /* [MI] for spin mutex splx() */ 111 112 u_long ci_intrdepth; /* interrupt trap depth */ 113 volatile u_long ci_ssir; /* simulated software interrupt reg */ 114 /* LWPs for soft intr dispatch */ 115 struct lwp *ci_silwps[SOFTINT_COUNT]; 116 struct cpu_softc *ci_softc; /* pointer to our device */ 117 118 struct pmap *ci_pmap; /* currently-activated pmap */ 119 u_int ci_next_asn; /* next ASN to assign */ 120 u_long ci_asn_gen; /* current ASN generation */ 121 122 struct mchkinfo ci_mcinfo; /* machine check info */ 123 124 /* 125 * The following must be in their own cache line, as they are 126 * stored to regularly by remote CPUs. 127 */ 128 volatile u_long ci_ipis /* interprocessor interrupts pending */ 129 __aligned(64); 130 u_int ci_want_resched; /* [MI] preempt current process */ 131 132 /* 133 * These are largely static, and will frequently be fetched 134 * by other CPUs. For that reason, they get their own cache 135 * line, too. 136 */ 137 struct cpu_info *ci_next /* next cpu_info structure */ 138 __aligned(64); 139 cpuid_t ci_cpuid; /* [MI] our CPU ID */ 140 volatile u_long ci_flags; /* flags; see below */ 141 uint64_t ci_pcc_freq; /* cpu cycles/second */ 142 struct trapframe *ci_db_regs; /* registers for debuggers */ 143 u_int ci_nintrhand; /* # of interrupt handlers */ 144 #if defined(GPROF) && defined(MULTIPROCESSOR) 145 struct gmonparam *ci_gmon; /* [MI] per-cpu GPROF */ 146 #endif 147 }; 148 149 /* Ensure some cpu_info fields are within the signed 16-bit displacement. */ 150 __CTASSERT(offsetof(struct cpu_info, ci_curlwp) <= 0x7ff0); 151 __CTASSERT(offsetof(struct cpu_info, ci_ssir) <= 0x7ff0); 152 153 #endif /* _KERNEL || _KMEMUSER */ 154 155 #if defined(_KERNEL) 156 157 #define CPUF_PRIMARY 0x01 /* CPU is primary CPU */ 158 #define CPUF_PRESENT 0x02 /* CPU is present */ 159 #define CPUF_RUNNING 0x04 /* CPU is running */ 160 #define CPUF_PAUSED 0x08 /* CPU is paused */ 161 162 extern struct cpu_info cpu_info_primary; 163 extern struct cpu_info *cpu_info_list; 164 165 #define CPU_INFO_ITERATOR int __unused 166 #define CPU_INFO_FOREACH(cii, ci) ci = cpu_info_list; \ 167 ci != NULL; ci = ci->ci_next 168 169 #if defined(MULTIPROCESSOR) 170 extern volatile u_long cpus_running; 171 extern volatile u_long cpus_paused; 172 extern struct cpu_info *cpu_info[]; 173 174 #define curlwp ((struct lwp *)alpha_pal_rdval()) 175 #define curcpu() curlwp->l_cpu 176 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 177 178 void cpu_boot_secondary_processors(void); 179 180 void cpu_pause_resume(unsigned long, int); 181 void cpu_pause_resume_all(int); 182 #else /* ! MULTIPROCESSOR */ 183 #define curcpu() (&cpu_info_primary) 184 #define curlwp curcpu()->ci_curlwp 185 #endif /* MULTIPROCESSOR */ 186 187 188 /* 189 * definitions of cpu-dependent requirements 190 * referenced in generic code 191 */ 192 #define cpu_number() alpha_pal_whami() 193 #define cpu_proc_fork(p1, p2) /* nothing */ 194 195 /* 196 * Arguments to hardclock and gatherstats encapsulate the previous 197 * machine state in an opaque clockframe. On the alpha, we use 198 * what we push on an interrupt (a trapframe). 199 */ 200 struct clockframe { 201 struct trapframe cf_tf; 202 }; 203 #define CLKF_USERMODE(framep) \ 204 (((framep)->cf_tf.tf_regs[FRAME_PS] & ALPHA_PSL_USERMODE) != 0) 205 #define CLKF_PC(framep) ((framep)->cf_tf.tf_regs[FRAME_PC]) 206 207 /* 208 * This isn't perfect; if the clock interrupt comes in before the 209 * r/m/w cycle is complete, we won't be counted... but it's not 210 * like this statistic has to be extremely accurate. 211 */ 212 #define CLKF_INTR(framep) \ 213 ((curcpu()->ci_intrdepth & 0xf) != 0) /* see interrupt() */ 214 215 /* 216 * This is used during profiling to integrate system time. It can safely 217 * assume that the process is resident. 218 */ 219 #define LWP_PC(p) ((l)->l_md.md_tf->tf_regs[FRAME_PC]) 220 221 void cpu_need_proftick(struct lwp *); 222 void cpu_signotify(struct lwp *); 223 224 #define aston(l) ((l)->l_md.md_astpending = 1) 225 #endif /* _KERNEL */ 226 227 /* 228 * CTL_MACHDEP definitions. 229 */ 230 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 231 #define CPU_ROOT_DEVICE 2 /* string: root device name */ 232 #define CPU_UNALIGNED_PRINT 3 /* int: print unaligned accesses */ 233 #define CPU_UNALIGNED_FIX 4 /* int: fix unaligned accesses */ 234 #define CPU_UNALIGNED_SIGBUS 5 /* int: SIGBUS unaligned accesses */ 235 #define CPU_BOOTED_KERNEL 6 /* string: booted kernel name */ 236 #define CPU_FP_SYNC_COMPLETE 7 /* int: always fixup sync fp traps */ 237 #define CPU_CCTR 8 /* int: using CC timecounter */ 238 #define CPU_IS_QEMU 9 /* int: running under Qemu */ 239 #define CPU_FP_COMPLETE_DEBUG 10 /* int: enable FP completion debug */ 240 241 242 #ifdef _KERNEL 243 244 struct pcb; 245 struct proc; 246 struct reg; 247 struct rpb; 248 struct trapframe; 249 250 int badaddr(void *, size_t); 251 void * cpu_uarea_alloc(bool); 252 bool cpu_uarea_free(void *); 253 254 void cpu_idle_wtint(void); 255 extern void (*cpu_idle_fn)(void); 256 #define cpu_idle() (*cpu_idle_fn)() 257 258 void cpu_initclocks_secondary(void); 259 260 #endif /* _KERNEL */ 261 #endif /* _ALPHA_CPU_H_ */ 262