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 * %sccs.include.redist.c% 9 * 10 * @(#)cpu.h 7.4 (Berkeley) 02/20/92 11 */ 12 13 /* 14 * Assorted definitions unique to TAHOE CPU support. 15 */ 16 17 #define uncache(v) mtpr(PDCS, (caddr_t)(v)) 18 #define movow(a,w) _movow((u_short *)(a), (u_short)(w)) 19 #define movob(a,b) _movob((u_char *)(a), (u_char)(b)) 20 21 #define resettodr() /* no todr to set */ 22 23 #define MAXCKEY 255 /* maximal allowed code key */ 24 #define MAXDKEY 255 /* maximal allowed data key */ 25 #define NCKEY (MAXCKEY+1) /* # code keys, including 0 (reserved) */ 26 #define NDKEY (MAXDKEY+1) /* # data keys, including 0 (reserved) */ 27 28 #ifndef LOCORE 29 #ifdef KERNEL 30 char ckey_cache[NCKEY]; /* 1 =>'s key i may be in code cache */ 31 short ckey_cnt[NCKEY]; /* code key reference count */ 32 char dkey_cache[NDKEY]; /* 1 =>'s key i may be in data cache */ 33 short dkey_cnt[NDKEY]; /* data key reference count */ 34 #endif 35 36 /* 37 * Statistics maintained for code and 38 * data cache key allocations algorithms. 39 */ 40 struct keystats { 41 long ks_avail; /* number of keys currently unallocated */ 42 long ks_dirty; /* number of keys currently waiting for purge */ 43 long ks_allocs; /* number of keys allocated */ 44 long ks_allocfree; /* key allocated from free slot */ 45 long ks_norefs; /* key marked in use, but refcnt 0 */ 46 long ks_taken; /* key taken from single process */ 47 long ks_shared; /* key taken from multiple processes */ 48 long ks_inval; /* number of times keys exchanged */ 49 }; 50 #endif 51 52 long *user_psl; /* user mode psl for ast's */ 53 int intenable; /* interrupts enable startup flag */ 54 int clk_enable; /* clock enable startup flag */ 55 56 /* 57 * Enable realtime clock. 58 */ 59 #define enablertclock() (clk_enable = 1) 60 61 #ifndef _MTPR_H_ 62 #include "mtpr.h" 63 #endif /* !_MTPR_H_ */ 64