1 /* $NetBSD: cpu.h,v 1.75 2010/12/26 18:00:41 he 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) 1982, 1990, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * This code is derived from software contributed to Berkeley by 38 * the Systems Programming Group of the University of Utah Computer 39 * Science Department. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 66 * 67 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 68 */ 69 /* 70 * Copyright (c) 1988 University of Utah. 71 * 72 * This code is derived from software contributed to Berkeley by 73 * the Systems Programming Group of the University of Utah Computer 74 * Science Department. 75 * 76 * Redistribution and use in source and binary forms, with or without 77 * modification, are permitted provided that the following conditions 78 * are met: 79 * 1. Redistributions of source code must retain the above copyright 80 * notice, this list of conditions and the following disclaimer. 81 * 2. Redistributions in binary form must reproduce the above copyright 82 * notice, this list of conditions and the following disclaimer in the 83 * documentation and/or other materials provided with the distribution. 84 * 3. All advertising materials mentioning features or use of this software 85 * must display the following acknowledgement: 86 * This product includes software developed by the University of 87 * California, Berkeley and its contributors. 88 * 4. Neither the name of the University nor the names of its contributors 89 * may be used to endorse or promote products derived from this software 90 * without specific prior written permission. 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 93 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 95 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 96 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 97 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 98 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 100 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 101 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 102 * SUCH DAMAGE. 103 * 104 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 105 * 106 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 107 */ 108 109 #ifndef _ALPHA_CPU_H_ 110 #define _ALPHA_CPU_H_ 111 112 #if defined(_KERNEL_OPT) 113 #include "opt_multiprocessor.h" 114 #include "opt_lockdebug.h" 115 #endif 116 117 /* 118 * Exported definitions unique to Alpha cpu support. 119 */ 120 121 #include <machine/alpha_cpu.h> 122 123 #if defined(_KERNEL) || defined(_KMEMUSER) 124 #include <sys/cpu_data.h> 125 #ifndef _KMEMUSER 126 #include <sys/cctr.h> 127 #include <machine/frame.h> 128 #endif 129 130 /* 131 * Machine check information. 132 */ 133 struct mchkinfo { 134 volatile int mc_expected; /* machine check is expected */ 135 volatile int mc_received; /* machine check was received */ 136 }; 137 138 struct cpu_info { 139 /* 140 * Private members accessed in assembly with 8 bit offsets. 141 */ 142 struct lwp *ci_fpcurlwp; /* current owner of the FPU */ 143 paddr_t ci_curpcb; /* PA of current HW PCB */ 144 145 /* 146 * Public members. 147 */ 148 struct lwp *ci_curlwp; /* current owner of the processor */ 149 struct cpu_data ci_data; /* MI per-cpu data */ 150 #ifndef _KMEMUSER 151 struct cctr_state ci_cc; /* cycle counter state */ 152 struct cpu_info *ci_next; /* next cpu_info structure */ 153 int ci_mtx_count; 154 int ci_mtx_oldspl; 155 156 /* 157 * Private members. 158 */ 159 struct mchkinfo ci_mcinfo; /* machine check info */ 160 cpuid_t ci_cpuid; /* our CPU ID */ 161 struct cpu_softc *ci_softc; /* pointer to our device */ 162 u_long ci_want_resched; /* preempt current process */ 163 u_long ci_intrdepth; /* interrupt trap depth */ 164 struct trapframe *ci_db_regs; /* registers for debuggers */ 165 uint64_t ci_pcc_freq; /* cpu cycles/second */ 166 167 #if defined(MULTIPROCESSOR) 168 volatile u_long ci_flags; /* flags; see below */ 169 volatile u_long ci_ipis; /* interprocessor interrupts pending */ 170 #endif 171 #endif /* _KMEMUSER */ 172 }; 173 174 #endif /* _KERNEL || _KMEMUSER */ 175 176 #if defined(_KERNEL) 177 178 #define CPUF_PRIMARY 0x01 /* CPU is primary CPU */ 179 #define CPUF_PRESENT 0x02 /* CPU is present */ 180 #define CPUF_RUNNING 0x04 /* CPU is running */ 181 #define CPUF_PAUSED 0x08 /* CPU is paused */ 182 #define CPUF_FPUSAVE 0x10 /* CPU is currently in fpusave_cpu() */ 183 184 extern struct cpu_info cpu_info_primary; 185 extern struct cpu_info *cpu_info_list; 186 187 #define CPU_INFO_ITERATOR int 188 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = cpu_info_list; \ 189 ci != NULL; ci = ci->ci_next 190 191 #if defined(MULTIPROCESSOR) 192 extern volatile u_long cpus_running; 193 extern volatile u_long cpus_paused; 194 extern struct cpu_info *cpu_info[]; 195 196 #define curcpu() ((struct cpu_info *)alpha_pal_rdval()) 197 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 198 199 void cpu_boot_secondary_processors(void); 200 201 void cpu_pause_resume(unsigned long, int); 202 void cpu_pause_resume_all(int); 203 #else /* ! MULTIPROCESSOR */ 204 #define curcpu() (&cpu_info_primary) 205 #endif /* MULTIPROCESSOR */ 206 207 #define curlwp curcpu()->ci_curlwp 208 #define fpcurlwp curcpu()->ci_fpcurlwp 209 #define curpcb curcpu()->ci_curpcb 210 211 /* 212 * definitions of cpu-dependent requirements 213 * referenced in generic code 214 */ 215 #define cpu_number() alpha_pal_whami() 216 #define cpu_proc_fork(p1, p2) /* nothing */ 217 218 /* 219 * Arguments to hardclock and gatherstats encapsulate the previous 220 * machine state in an opaque clockframe. One the Alpha, we use 221 * what we push on an interrupt (a trapframe). 222 */ 223 struct clockframe { 224 struct trapframe cf_tf; 225 }; 226 #define CLKF_USERMODE(framep) \ 227 (((framep)->cf_tf.tf_regs[FRAME_PS] & ALPHA_PSL_USERMODE) != 0) 228 #define CLKF_PC(framep) ((framep)->cf_tf.tf_regs[FRAME_PC]) 229 230 /* 231 * This isn't perfect; if the clock interrupt comes in before the 232 * r/m/w cycle is complete, we won't be counted... but it's not 233 * like this stastic has to be extremely accurate. 234 */ 235 #define CLKF_INTR(framep) (curcpu()->ci_intrdepth) 236 237 /* 238 * This is used during profiling to integrate system time. It can safely 239 * assume that the process is resident. 240 */ 241 #define LWP_PC(p) ((l)->l_md.md_tf->tf_regs[FRAME_PC]) 242 243 /* 244 * Give a profiling tick to the current process when the user profiling 245 * buffer pages are invalid. On the Alpha, request an AST to send us 246 * through trap, marking the proc as needing a profiling tick. 247 */ 248 #define cpu_need_proftick(l) \ 249 do { \ 250 (l)->l_pflag |= LP_OWEUPC; \ 251 aston(l); \ 252 } while (/*CONSTCOND*/0) 253 254 /* 255 * Notify the current process (p) that it has a signal pending, 256 * process as soon as possible. 257 */ 258 #define cpu_signotify(l) aston(l) 259 260 /* 261 * XXXSMP 262 * Should we send an AST IPI? Or just let it handle it next time 263 * it sees a normal kernel entry? I guess letting it happen later 264 * follows the `asynchronous' part of the name... 265 */ 266 #define aston(l) ((l)->l_md.md_astpending = 1) 267 #endif /* _KERNEL */ 268 269 /* 270 * CTL_MACHDEP definitions. 271 */ 272 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 273 #define CPU_ROOT_DEVICE 2 /* string: root device name */ 274 #define CPU_UNALIGNED_PRINT 3 /* int: print unaligned accesses */ 275 #define CPU_UNALIGNED_FIX 4 /* int: fix unaligned accesses */ 276 #define CPU_UNALIGNED_SIGBUS 5 /* int: SIGBUS unaligned accesses */ 277 #define CPU_BOOTED_KERNEL 6 /* string: booted kernel name */ 278 #define CPU_FP_SYNC_COMPLETE 7 /* int: always fixup sync fp traps */ 279 #define CPU_MAXID 8 /* 7 valid machdep IDs */ 280 281 #ifdef _KERNEL 282 283 struct pcb; 284 struct proc; 285 struct reg; 286 struct rpb; 287 struct trapframe; 288 289 int badaddr(void *, size_t); 290 291 #define cpu_idle() /* nothing */ 292 293 #endif /* _KERNEL */ 294 #endif /* _ALPHA_CPU_H_ */ 295