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Annotation of 43BSDReno/sys/tahoe/cpu.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1986, 1988 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * This code is derived from software contributed to Berkeley by
                      6:  * Computer Consoles Inc.
                      7:  *
                      8:  * Redistribution is only permitted until one year after the first shipment
                      9:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
                     10:  * binary forms are permitted provided that: (1) source distributions retain
                     11:  * this entire copyright notice and comment, and (2) distributions including
                     12:  * binaries display the following acknowledgement:  This product includes
                     13:  * software developed by the University of California, Berkeley and its
                     14:  * contributors'' in the documentation or other materials provided with the
                     15:  * distribution and in all advertising materials mentioning features or use
                     16:  * of this software.  Neither the name of the University nor the names of
                     17:  * its contributors may be used to endorse or promote products derived from
                     18:  * this software without specific prior written permission.
                     19:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     20:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     21:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     22:  *
                     23:  *     @(#)cpu.h       7.3 (Berkeley) 6/28/90
                     24:  */
                     25: 
                     26: /*
                     27:  * Assorted definitions unique to TAHOE CPU support.
                     28:  */
                     29: 
                     30: #define        uncache(v)      mtpr(PDCS, (caddr_t)(v))
                     31: #define        movow(a,w)      _movow((u_short *)(a), (u_short)(w))
                     32: #define        movob(a,b)      _movob((u_char *)(a), (u_char)(b))
                     33: 
                     34: #define        resettodr()     /* no todr to set */
                     35: 
                     36: #define        MAXCKEY 255             /* maximal allowed code key */
                     37: #define        MAXDKEY 255             /* maximal allowed data key */
                     38: #define        NCKEY   (MAXCKEY+1)     /* # code keys, including 0 (reserved) */
                     39: #define        NDKEY   (MAXDKEY+1)     /* # data keys, including 0 (reserved) */
                     40: 
                     41: #ifndef LOCORE
                     42: #ifdef KERNEL
                     43: char   ckey_cache[NCKEY];      /* 1 =>'s key i may be in code cache */
                     44: short  ckey_cnt[NCKEY];        /* code key reference count */
                     45: char   dkey_cache[NDKEY];      /* 1 =>'s key i may be in data cache */
                     46: short  dkey_cnt[NDKEY];        /* data key reference count */
                     47: #endif
                     48: 
                     49: /*
                     50:  * Statistics maintained for code and
                     51:  * data cache key allocations algorithms.
                     52:  */
                     53: struct keystats {
                     54:        long    ks_avail;       /* number of keys currently unallocated */
                     55:        long    ks_dirty;       /* number of keys currently waiting for purge */
                     56:        long    ks_allocs;      /* number of keys allocated */
                     57:        long    ks_allocfree;   /* key allocated from free slot */
                     58:        long    ks_norefs;      /* key marked in use, but refcnt 0 */
                     59:        long    ks_taken;       /* key taken from single process */
                     60:        long    ks_shared;      /* key taken from multiple processes */
                     61:        long    ks_inval;       /* number of times keys exchanged */
                     62: };
                     63: #endif
                     64: 
                     65: long   *user_psl;              /* user mode psl for ast's */
                     66: int    intenable;              /* interrupts enable startup flag */
                     67: int    clk_enable;             /* clock enable startup flag */
                     68: 
                     69: /*
                     70:  * Enable realtime clock.
                     71:  */
                     72: #define        enablertclock() (clk_enable = 1)

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