sys/arch/ia64/include/cpu.h

   1 /*      $NetBSD: cpu.h,v 1.8 2009/07/20 04:41:37 kiyohara 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
  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         u_long ci_want_resched;         /* preempt current process */
 107         u_long ci_intrdepth;            /* interrupt trap depth */
 108         struct trapframe *ci_db_regs;   /* registers for debuggers */
 109         uint64_t ci_clock;              /* clock counter */
 110         uint64_t ci_clockadj;           /* clock adjust */
 111 };
 112
 113
 114 extern struct cpu_info cpu_info_primary;
 115
 116 #ifdef MULTIPROCESSOR
 117 /*
 118  * XXX: TODO use percpu infrastructure that yamt proposed or use KR? for
 119  * storing the percpu pointer.
 120  */
 121 #else
 122 #define curcpu() (&cpu_info_primary)
 123 #endif /* MULTIPROCESSOR */
 124 #define curlwp  (curcpu()->ci_curlwp)
 125
 126 #define cpu_number() 0              /*XXX: FIXME */
 127
 128 #define aston(l) ((l)->l_md.md_astpending = 1)
 129
 130 #define need_resched(ci)            /*XXX: FIXME */
 131
 132 struct clockframe {
 133         struct trapframe cf_tf;
 134 };
 135
 136 #define CLKF_PC(cf)             (TRAPF_PC(&(cf)->cf_tf))
 137 #define CLKF_CPL(cf)            (TRAPF_CPL(&(cf)->cf_tf))
 138 #define CLKF_USERMODE(cf)       (TRAPF_USERMODE(&(cf)->cf_tf))
 139 #define CLKF_INTR(frame)        (curcpu()->ci_intrdepth)
 140
 141 #define TRAPF_PC(tf)            ((tf)->tf_special.iip)
 142 #define TRAPF_CPL(tf)           ((tf)->tf_special.psr & IA64_PSR_CPL)
 143 #define TRAPF_USERMODE(tf)      (TRAPF_CPL(tf) != IA64_PSR_CPL_KERN)
 144
 145 /*
 146  * Give a profiling tick to the current process when the user profiling
 147  * buffer pages are invalid. XXX:Fixme.... On the ia64 I haven't yet figured
 148  * out what to do about this.. XXX.
 149  */
 150 /* extern void  cpu_need_proftick(struct lwp *l); */
 151 #define cpu_need_proftick(l)
 152
 153 /*
 154  * Notify the LWP l that it has a signal pending, process as soon as possible.
 155  */
 156 #define cpu_signotify(l)        aston(l)
 157
 158 // void cpu_need_resched(struct cpu_info *ci, int flags)
 159 #define cpu_need_resched(ci, f) do { \
 160 } while(0)
 161
 162 #define setsoftclock()              /*XXX: FIXME */
 163
 164 /* machdep.c */
 165 int cpu_maxproc(void); /*XXX: Fill in machdep.c */
 166
 167 #define cpu_proc_fork(p1, p2) /* XXX: Look into this. */
 168
 169 #define DELAY(x)                /* XXX: FIXME */
 170
 171 static inline void cpu_idle(void);
 172 static inline
 173 void cpu_idle(void)
 174 {
 175         asm ("hint @pause" ::: "memory");
 176 }
 177
 178 #endif /* _KERNEL_ */
 179 #endif /* _IA64_CPU_H */