cpu.h revision 1.7
1 /* $NetBSD: cpu.h,v 1.7 2009/03/18 10:22:30 cegger Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 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 /*- 35 * Copyright (c) 1988 University of Utah. 36 * Copyright (c) 1982, 1990, 1993 37 * The Regents of the University of California. All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * the Systems Programming Group of the University of Utah Computer 41 * Science Department. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 4. Neither the name of the University nor the names of its contributors 52 * may be used to endorse or promote products derived from this software 53 * without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 65 * SUCH DAMAGE. 66 * 67 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 68 * 69 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 70 */ 71 72 73 #ifndef _IA64_CPU_H_ 74 #define _IA64_CPU_H_ 75 76 #ifdef _KERNEL 77 #include <sys/cpu_data.h> 78 #include <sys/cctr.h> 79 #include <machine/frame.h> 80 #include <machine/ia64_cpu.h> 81 82 83 struct cpu_info { 84 struct device *ci_dev; /* pointer to our device */ 85 struct cpu_info *ci_self; /* self-pointer */ 86 /* 87 * Public members. 88 */ 89 struct lwp *ci_curlwp; /* current owner of the processor */ 90 struct cpu_data ci_data; /* MI per-cpu data */ 91 struct cctr_state ci_cc; /* cycle counter state */ 92 struct cpu_info *ci_next; /* next cpu_info structure */ 93 94 volatile int ci_mtx_count; /* Negative count of spin mutexes */ 95 volatile int ci_mtx_oldspl; /* Old SPL at this ci_idepth */ 96 97 /* XXX: Todo */ 98 /* 99 * Private members. 100 */ 101 cpuid_t ci_cpuid; /* our CPU ID */ 102 struct pmap *ci_pmap; /* current pmap */ 103 struct lwp *ci_fpcurlwp; /* current owner of the FPU */ 104 paddr_t ci_curpcb; /* PA of current HW PCB */ 105 struct pcb *ci_idle_pcb; /* our idle PCB */ 106 struct cpu_softc *ci_softc; /* pointer to our device */ 107 u_long ci_want_resched; /* preempt current process */ 108 u_long ci_intrdepth; /* interrupt trap depth */ 109 struct trapframe *ci_db_regs; /* registers for debuggers */ 110 }; 111 112 113 extern struct cpu_info cpu_info_primary; 114 115 #ifdef MULTIPROCESSOR 116 /* 117 * XXX: TODO use percpu infrastructure that yamt proposed or use KR? for 118 * storing the percpu pointer. 119 */ 120 #else 121 #define curcpu() (&cpu_info_primary) 122 #endif /* MULTIPROCESSOR */ 123 124 #define cpu_number() 0 /*XXX: FIXME */ 125 126 #define aston(l) ((l)->l_md.md_astpending = 1) 127 128 #define need_resched(ci) /*XXX: FIXME */ 129 130 struct clockframe { 131 struct trapframe cf_tf; 132 }; 133 134 #define CLKF_PC(cf) ((cf)->cf_tf.tf_special.iip) 135 #define CLKF_CPL(cf) ((cf)->cf_tf.tf_special.psr & IA64_PSR_CPL) 136 #define CLKF_USERMODE(cf) (CLKF_CPL(cf) != IA64_PSR_CPL_KERN) 137 #define CLKF_INTR(frame) (curcpu()->ci_intrdepth) 138 139 #define TRAPF_PC(tf) ((tf)->tf_special.iip) 140 #define TRAPF_CPL(tf) ((tf)->tf_special.psr & IA64_PSR_CPL) 141 #define TRAPF_USERMODE(tf) (TRAPF_CPL(tf) != IA64_PSR_CPL_KERN) 142 143 /* 144 * Give a profiling tick to the current process when the user profiling 145 * buffer pages are invalid. XXX:Fixme.... On the ia64 I haven't yet figured 146 * out what to do about this.. XXX. 147 */ 148 /* extern void cpu_need_proftick(struct lwp *l); */ 149 #define cpu_need_proftick(l) 150 151 /* 152 * Notify the LWP l that it has a signal pending, process as soon as possible. 153 */ 154 #define cpu_signotify(l) aston(l) 155 156 // void cpu_need_resched(struct cpu_info *ci, int flags) 157 #define cpu_need_resched(ci, f) do { \ 158 } while(0) 159 160 #define setsoftclock() /*XXX: FIXME */ 161 162 /* machdep.c */ 163 int cpu_maxproc(void); /*XXX: Fill in machdep.c */ 164 165 #define cpu_proc_fork(p1, p2) /* XXX: Look into this. */ 166 167 #define DELAY(x) /* XXX: FIXME */ 168 169 static inline void cpu_idle(void); 170 static inline 171 void cpu_idle(void) 172 { 173 asm ("hint @pause" ::: "memory"); 174 } 175 176 /* XXX: revisit later */ 177 #define __NO_CPU_LWP_FREE 178 179 #endif /* _KERNEL_ */ 180 #endif /* _IA64_CPU_H */ 181
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