sys/arch/vax/include/cpu.h

   1 /*      $NetBSD: cpu.h,v 1.86 2009/10/24 20:03:56 rmind Exp $      */
   2
   3 /*
   4  * Copyright (c) 1994 Ludd, University of Lule}, Sweden
   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  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed at Ludd, University of Lule}
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #ifndef _VAX_CPU_H_
  34 #define _VAX_CPU_H_
  35
  36 #if defined(_KERNEL_OPT)
  37 #include "opt_multiprocessor.h"
  38 #include "opt_lockdebug.h"
  39 #endif
  40
  41 #define CPU_PRINTFATALTRAPS     1
  42 #define CPU_CONSDEV             2
  43 #define CPU_BOOTED_DEVICE       3
  44 #define CPU_BOOTED_KERNEL       4
  45 #define CPU_MAXID               5
  46
  47 #ifdef _KERNEL
  48
  49 #include <sys/cdefs.h>
  50 #include <sys/queue.h>
  51 #include <sys/device.h>
  52 #include <sys/cpu_data.h>
  53
  54 #include <machine/mtpr.h>
  55 #include <machine/pcb.h>
  56 #include <machine/uvax.h>
  57 #include <machine/psl.h>
  58
  59 #define enablertclock()
  60
  61 /*
  62  * All cpu-dependent info is kept in this struct. Pointer to the
  63  * struct for the current cpu is set up in locore.c.
  64  */
  65 struct cpu_info;
  66
  67 struct cpu_dep {
  68         void    (*cpu_steal_pages)(void); /* pmap init before mm is on */
  69         int     (*cpu_mchk)(void *);   /* Machine check handling */
  70         void    (*cpu_memerr)(void); /* Memory subsystem errors */
  71             /* Autoconfiguration */
  72         void    (*cpu_conf)(void);
  73         int     (*cpu_gettime)(struct timeval *); /* Read cpu clock time */
  74         void    (*cpu_settime)(struct timeval *); /* Write system time to cpu */
  75         short   cpu_vups;               /* speed of cpu */
  76         short   cpu_scbsz;              /* (estimated) size of SCB */
  77         void    (*cpu_halt)(void);      /* Cpu dependent halt call */
  78         void    (*cpu_reboot)(int);     /* Cpu dependent reboot call */
  79         void    (*cpu_clrf)(void);      /* Clear cold/warm start flags */
  80         const char * const *cpu_devs;   /* mainbus devices */
  81         void    (*cpu_attach_cpu)(device_t);    /* print CPU info */
  82         void    (*cpu_subconf)(device_t, void *, cfprint_t);    /* attach dep. dev */
  83         int     cpu_flags;
  84         void    (*cpu_badaddr)(void);   /* cpu-specific badaddr() */
  85 };
  86
  87 #if defined(MULTIPROCESSOR)
  88 /*
  89  * All cpu-dependent calls for multicpu systems goes here.
  90  */
  91 struct cpu_mp_dep {
  92         void    (*cpu_startslave)(struct cpu_info *);
  93         void    (*cpu_send_ipi)(struct cpu_info *);
  94         void    (*cpu_cnintr)(void);
  95 };
  96 /*
  97  * NOTE: This is not bit mask, this is bit _number_.
  98  */
  99 #define IPI_START_CNTX  1       /* Start console transmitter, proc out */
 100 #define IPI_SEND_CNCHAR 2       /* Write char to console, kernel printf */
 101 #define IPI_RUNNING     3       /* This CPU just started to run */
 102 #define IPI_TBIA        4       /* Flush the TLB */
 103 #define IPI_DDB         5       /* Jump into the DDB loop */
 104
 105 #define IPI_DEST_MASTER -1      /* Destination is mastercpu */
 106 #define IPI_DEST_ALL    -2      /* Broadcast */
 107
 108 extern const struct cpu_mp_dep *mp_dep_call;
 109 #endif /* defined(MULTIPROCESSOR) */
 110
 111 #define CPU_RAISEIPL    1       /* Must raise IPL until intr is handled */
 112
 113 extern const struct cpu_dep *dep_call;
 114                                 /* Holds pointer to current CPU struct. */
 115
 116 struct clockframe {
 117         int     pc;
 118         int     ps;
 119 };
 120
 121 struct cpu_info {
 122         /*
 123          * Public members.
 124          */
 125         struct cpu_data ci_data;        /* MI per-cpu data */
 126         struct device *ci_dev;          /* device struct for this cpu */
 127         int ci_mtx_oldspl;              /* saved spl */
 128         int ci_mtx_count;               /* negative count of mutexes */
 129         int ci_cpuid;                   /* h/w specific cpu id */
 130         int ci_want_resched;            /* Should change process */
 131
 132         /*
 133          * Private members.
 134          */
 135 #if defined(__HAVE_FAST_SOFTINTS)
 136         lwp_t *ci_softlwps[SOFTINT_COUNT];
 137 #endif
 138         vaddr_t ci_istack;              /* Interrupt stack location */
 139         const char *ci_cpustr;
 140         int ci_slotid;                  /* cpu slot */
 141 #if defined(MULTIPROCESSOR)
 142         struct lwp *ci_curlwp;          /* current lwp (for other cpus) */
 143         volatile int ci_flags;          /* See below */
 144         long ci_ipimsgs;                /* Sent IPI bits */
 145         struct trapframe *ci_ddb_regs;  /* Used by DDB */
 146         SIMPLEQ_ENTRY(cpu_info) ci_next; /* next cpu_info */
 147 #endif
 148 };
 149 #define CI_MASTERCPU    1               /* Set if master CPU */
 150 #define CI_RUNNING      2               /* Set when a slave CPU is running */
 151 #define CI_STOPPED      4               /* Stopped (in debugger) */
 152
 153 extern int cpu_printfataltraps;
 154
 155 #define curcpu()                (curlwp->l_cpu + 0)
 156 #define curlwp                  ((struct lwp *)mfpr(PR_SSP))
 157 #define cpu_number()            (curcpu()->ci_cpuid)
 158 #define cpu_need_resched(ci, flags)             \
 159         do {                                    \
 160                 (ci)->ci_want_resched = 1;      \
 161                 mtpr(AST_OK,PR_ASTLVL);         \
 162         } while (/*CONSTCOND*/ 0)
 163 #define cpu_proc_fork(x, y)     do { } while (/*CONSCOND*/0)
 164 #define cpu_idle()              do { } while (/*CONSCOND*/0)
 165 static inline bool
 166 cpu_intr_p(void)
 167 {
 168         register_t psl;
 169         __asm("movpsl %0" : "=g"(psl));
 170         return (psl & PSL_IS) != 0;
 171 }
 172 #if defined(MULTIPROCESSOR)
 173 #define CPU_IS_PRIMARY(ci)      ((ci)->ci_flags & CI_MASTERCPU)
 174
 175 #define CPU_INFO_ITERATOR       int
 176 #define CPU_INFO_FOREACH(cii, ci)       cii = 0, ci = SIMPLEQ_FIRST(&cpus); \
 177                                         ci != NULL; \
 178                                         ci = SIMPLEQ_NEXT(ci, ci_next)
 179
 180 extern SIMPLEQ_HEAD(cpu_info_qh, cpu_info) cpus;
 181 extern char vax_mp_tramp;
 182 #endif
 183
 184 /*
 185  * Notify the current process (p) that it has a signal pending,
 186  * process as soon as possible.
 187  */
 188
 189 #define cpu_signotify(l)     mtpr(AST_OK,PR_ASTLVL)
 190
 191
 192 /*
 193  * Give a profiling tick to the current process when the user profiling
 194  * buffer pages are invalid.  On the hp300, request an ast to send us
 195  * through trap, marking the proc as needing a profiling tick.
 196  */
 197 #define cpu_need_proftick(l) do { (l)->l_pflag |= LP_OWEUPC; mtpr(AST_OK,PR_ASTLVL); } while (/*CONSTCOND*/ 0)
 198
 199 /*
 200  * This defines the I/O device register space size in pages.
 201  */
 202 #define IOSPSZ  ((64*1024) / VAX_NBPG)  /* 64k == 128 pages */
 203
 204 struct device;
 205 struct buf;
 206 struct pte;
 207
 208 #include <sys/lwp.h>
 209
 210 /* Some low-level prototypes */
 211 #if defined(MULTIPROCESSOR)
 212 void    cpu_slavesetup(device_t, int);
 213 void    cpu_boot_secondary_processors(void);
 214 void    cpu_send_ipi(int, int);
 215 void    cpu_handle_ipi(void);
 216 #endif
 217 int     badaddr(volatile void *, int);
 218 void    dumpconf(void);
 219 void    dumpsys(void);
 220 void    swapconf(void);
 221 void    disk_printtype(int, int);
 222 void    disk_reallymapin(struct buf *, struct pte *, int, int);
 223 vaddr_t vax_map_physmem(paddr_t, size_t);
 224 void    vax_unmap_physmem(vaddr_t, size_t);
 225 void    ioaccess(vaddr_t, paddr_t, size_t);
 226 void    iounaccess(vaddr_t, size_t);
 227 void    findcpu(void);
 228 #ifdef DDB
 229 int     kdbrint(int);
 230 #endif
 231 #endif /* _KERNEL */
 232 #ifdef _STANDALONE
 233 void    findcpu(void);
 234 #endif
 235 #endif /* _VAX_CPU_H_ */