1 /* $NetBSD: cpu.h,v 1.82 2014/01/22 22:52:04 christos 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_multiprocessor.h" 76 #include "opt_lockdebug.h" 77 #endif 78 79 /* 80 * Exported definitions unique to Alpha cpu support. 81 */ 82 83 #include <machine/alpha_cpu.h> 84 85 #if defined(_KERNEL) || defined(_KMEMUSER) 86 #include <sys/cpu_data.h> 87 #ifndef _KMEMUSER 88 #include <sys/cctr.h> 89 #include <machine/frame.h> 90 #endif 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 struct cpu_info { 101 /* 102 * Private members accessed in assembly with 8 bit offsets. 103 */ 104 struct lwp *ci_fpcurlwp; /* current owner of the FPU */ 105 paddr_t ci_curpcb; /* PA of current HW PCB */ 106 107 /* 108 * Public members. 109 */ 110 struct lwp *ci_curlwp; /* current owner of the processor */ 111 struct cpu_data ci_data; /* MI per-cpu data */ 112 #if !defined(_KMEMUSER) 113 struct cctr_state ci_cc; /* cycle counter state */ 114 struct cpu_info *ci_next; /* next cpu_info structure */ 115 int ci_mtx_count; 116 int ci_mtx_oldspl; 117 118 /* 119 * Private members. 120 */ 121 struct mchkinfo ci_mcinfo; /* machine check info */ 122 cpuid_t ci_cpuid; /* our CPU ID */ 123 struct cpu_softc *ci_softc; /* pointer to our device */ 124 u_long ci_want_resched; /* preempt current process */ 125 u_long ci_intrdepth; /* interrupt trap depth */ 126 struct trapframe *ci_db_regs; /* registers for debuggers */ 127 uint64_t ci_pcc_freq; /* cpu cycles/second */ 128 129 #if defined(MULTIPROCESSOR) 130 volatile u_long ci_flags; /* flags; see below */ 131 volatile u_long ci_ipis; /* interprocessor interrupts pending */ 132 #endif 133 #endif /* !_KMEMUSER */ 134 }; 135 136 #endif /* _KERNEL || _KMEMUSER */ 137 138 #if defined(_KERNEL) 139 140 #define CPUF_PRIMARY 0x01 /* CPU is primary CPU */ 141 #define CPUF_PRESENT 0x02 /* CPU is present */ 142 #define CPUF_RUNNING 0x04 /* CPU is running */ 143 #define CPUF_PAUSED 0x08 /* CPU is paused */ 144 #define CPUF_FPUSAVE 0x10 /* CPU is currently in fpusave_cpu() */ 145 146 extern struct cpu_info cpu_info_primary; 147 extern struct cpu_info *cpu_info_list; 148 149 #define CPU_INFO_ITERATOR int __unused 150 #define CPU_INFO_FOREACH(cii, ci) ci = cpu_info_list; \ 151 ci != NULL; ci = ci->ci_next 152 153 #if defined(MULTIPROCESSOR) 154 extern volatile u_long cpus_running; 155 extern volatile u_long cpus_paused; 156 extern struct cpu_info *cpu_info[]; 157 158 #define curcpu() ((struct cpu_info *)alpha_pal_rdval()) 159 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 160 161 void cpu_boot_secondary_processors(void); 162 163 void cpu_pause_resume(unsigned long, int); 164 void cpu_pause_resume_all(int); 165 #else /* ! MULTIPROCESSOR */ 166 #define curcpu() (&cpu_info_primary) 167 #endif /* MULTIPROCESSOR */ 168 169 #define curlwp curcpu()->ci_curlwp 170 #define fpcurlwp curcpu()->ci_fpcurlwp 171 #define curpcb curcpu()->ci_curpcb 172 173 /* 174 * definitions of cpu-dependent requirements 175 * referenced in generic code 176 */ 177 #define cpu_number() alpha_pal_whami() 178 #define cpu_proc_fork(p1, p2) /* nothing */ 179 180 /* 181 * Arguments to hardclock and gatherstats encapsulate the previous 182 * machine state in an opaque clockframe. One the Alpha, we use 183 * what we push on an interrupt (a trapframe). 184 */ 185 struct clockframe { 186 struct trapframe cf_tf; 187 }; 188 #define CLKF_USERMODE(framep) \ 189 (((framep)->cf_tf.tf_regs[FRAME_PS] & ALPHA_PSL_USERMODE) != 0) 190 #define CLKF_PC(framep) ((framep)->cf_tf.tf_regs[FRAME_PC]) 191 192 /* 193 * This isn't perfect; if the clock interrupt comes in before the 194 * r/m/w cycle is complete, we won't be counted... but it's not 195 * like this stastic has to be extremely accurate. 196 */ 197 #define CLKF_INTR(framep) (curcpu()->ci_intrdepth) 198 199 /* 200 * This is used during profiling to integrate system time. It can safely 201 * assume that the process is resident. 202 */ 203 #define LWP_PC(p) ((l)->l_md.md_tf->tf_regs[FRAME_PC]) 204 205 /* 206 * Give a profiling tick to the current process when the user profiling 207 * buffer pages are invalid. On the Alpha, request an AST to send us 208 * through trap, marking the proc as needing a profiling tick. 209 */ 210 #define cpu_need_proftick(l) \ 211 do { \ 212 (l)->l_pflag |= LP_OWEUPC; \ 213 aston(l); \ 214 } while (/*CONSTCOND*/0) 215 216 /* 217 * Notify the current process (p) that it has a signal pending, 218 * process as soon as possible. 219 */ 220 #define cpu_signotify(l) aston(l) 221 222 /* 223 * XXXSMP 224 * Should we send an AST IPI? Or just let it handle it next time 225 * it sees a normal kernel entry? I guess letting it happen later 226 * follows the `asynchronous' part of the name... 227 */ 228 #define aston(l) ((l)->l_md.md_astpending = 1) 229 #endif /* _KERNEL */ 230 231 /* 232 * CTL_MACHDEP definitions. 233 */ 234 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 235 #define CPU_ROOT_DEVICE 2 /* string: root device name */ 236 #define CPU_UNALIGNED_PRINT 3 /* int: print unaligned accesses */ 237 #define CPU_UNALIGNED_FIX 4 /* int: fix unaligned accesses */ 238 #define CPU_UNALIGNED_SIGBUS 5 /* int: SIGBUS unaligned accesses */ 239 #define CPU_BOOTED_KERNEL 6 /* string: booted kernel name */ 240 #define CPU_FP_SYNC_COMPLETE 7 /* int: always fixup sync fp traps */ 241 #define CPU_MAXID 8 /* 7 valid machdep IDs */ 242 243 #ifdef _KERNEL 244 245 struct pcb; 246 struct proc; 247 struct reg; 248 struct rpb; 249 struct trapframe; 250 251 int badaddr(void *, size_t); 252 void * cpu_uarea_alloc(bool); 253 bool cpu_uarea_free(void *); 254 255 #define cpu_idle() /* nothing */ 256 257 #endif /* _KERNEL */ 258 #endif /* _ALPHA_CPU_H_ */ 259