| 1 | /* $NetBSD: cpu.h,v 1.41 2014/05/19 20:39:23 rmind Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2007 YAMAMOTO Takashi, |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #ifndef _SYS_CPU_H_ |
| 30 | #define _SYS_CPU_H_ |
| 31 | |
| 32 | #ifndef _LOCORE |
| 33 | |
| 34 | #include <machine/cpu.h> |
| 35 | |
| 36 | #include <sys/lwp.h> |
| 37 | |
| 38 | struct cpu_info; |
| 39 | |
| 40 | #ifdef _KERNEL |
| 41 | #ifndef cpu_idle |
| 42 | void cpu_idle(void); |
| 43 | #endif |
| 44 | |
| 45 | #ifdef CPU_UCODE |
| 46 | #include <sys/cpuio.h> |
| 47 | #include <dev/firmload.h> |
| 48 | #ifdef COMPAT_60 |
| 49 | #include <compat/sys/cpuio.h> |
| 50 | #endif |
| 51 | #endif |
| 52 | |
| 53 | /* |
| 54 | * cpu_need_resched() must always be called with the target CPU |
| 55 | * locked (via spc_lock() or another route), unless called locally. |
| 56 | * If called locally, the caller need only be at IPL_SCHED. |
| 57 | */ |
| 58 | #ifndef cpu_need_resched |
| 59 | void cpu_need_resched(struct cpu_info *, int); |
| 60 | #endif |
| 61 | |
| 62 | #ifndef cpu_did_resched |
| 63 | #define cpu_did_resched(l) /* nothing */ |
| 64 | #endif |
| 65 | |
| 66 | #ifndef CPU_INFO_ITERATOR |
| 67 | #define CPU_INFO_ITERATOR int |
| 68 | #define CPU_INFO_FOREACH(cii, ci) \ |
| 69 | (void)cii, ci = curcpu(); ci != NULL; ci = NULL |
| 70 | #endif |
| 71 | |
| 72 | #ifndef CPU_IS_PRIMARY |
| 73 | #define CPU_IS_PRIMARY(ci) ((void)ci, 1) |
| 74 | #endif |
| 75 | |
| 76 | #ifdef __HAVE_MD_CPU_OFFLINE |
| 77 | void cpu_offline_md(void); |
| 78 | #endif |
| 79 | |
| 80 | struct lwp *cpu_switchto(struct lwp *, struct lwp *, bool); |
| 81 | struct cpu_info *cpu_lookup(u_int); |
| 82 | int cpu_setmodel(const char *fmt, ...) __printflike(1, 2); |
| 83 | const char *cpu_getmodel(void); |
| 84 | int cpu_setstate(struct cpu_info *, bool); |
| 85 | int cpu_setintr(struct cpu_info *, bool); |
| 86 | bool cpu_intr_p(void); |
| 87 | bool cpu_softintr_p(void); |
| 88 | bool cpu_kpreempt_enter(uintptr_t, int); |
| 89 | void cpu_kpreempt_exit(uintptr_t); |
| 90 | bool cpu_kpreempt_disabled(void); |
| 91 | int cpu_lwp_setprivate(struct lwp *, void *); |
| 92 | void cpu_intr_redistribute(void); |
| 93 | u_int cpu_intr_count(struct cpu_info *); |
| 94 | #endif |
| 95 | |
| 96 | #ifdef _KERNEL |
| 97 | extern kmutex_t cpu_lock; |
| 98 | extern u_int maxcpus; |
| 99 | extern struct cpu_info **cpu_infos; |
| 100 | extern kcpuset_t *kcpuset_attached; |
| 101 | extern kcpuset_t *kcpuset_running; |
| 102 | |
| 103 | static inline u_int |
| 104 | cpu_index(const struct cpu_info *ci) |
| 105 | { |
| 106 | return ci->ci_index; |
| 107 | } |
| 108 | |
| 109 | static inline char * |
| 110 | cpu_name(struct cpu_info *ci) |
| 111 | { |
| 112 | return ci->ci_data.cpu_name; |
| 113 | } |
| 114 | |
| 115 | #ifdef CPU_UCODE |
| 116 | struct cpu_ucode_softc { |
| 117 | int loader_version; |
| 118 | char *sc_blob; |
| 119 | off_t sc_blobsize; |
| 120 | }; |
| 121 | |
| 122 | int cpu_ucode_get_version(struct cpu_ucode_version *); |
| 123 | int cpu_ucode_apply(const struct cpu_ucode *); |
| 124 | #ifdef COMPAT_60 |
| 125 | int compat6_cpu_ucode_get_version(struct compat6_cpu_ucode *); |
| 126 | int compat6_cpu_ucode_apply(const struct compat6_cpu_ucode *); |
| 127 | #endif |
| 128 | int cpu_ucode_load(struct cpu_ucode_softc *, const char *); |
| 129 | int cpu_ucode_md_open(firmware_handle_t *, int, const char *); |
| 130 | #endif |
| 131 | |
| 132 | #endif |
| 133 | #endif /* !_LOCORE */ |
| 134 | |
| 135 | /* flags for cpu_need_resched */ |
| 136 | #define RESCHED_LAZY 0x01 /* request a ctx switch */ |
| 137 | #define RESCHED_IMMED 0x02 /* request an immediate ctx switch */ |
| 138 | #define RESCHED_KPREEMPT 0x04 /* request in-kernel preemption */ |
| 139 | |
| 140 | #endif /* !_SYS_CPU_H_ */ |
| 141 | |