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Annotation of 43BSDReno/sys/vaxbi/kdbreg.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1988 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * This code is derived from software contributed to Berkeley by
                      6:  * Chris Torek.
                      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:  *     @(#)kdbreg.h    7.3 (Berkeley) 6/28/90
                     24:  */
                     25: 
                     26: /*
                     27:  * The KDB50 registers are embedded inside the bi interface
                     28:  * general-purpose registers.
                     29:  */
                     30: struct kdb_regs {
                     31:        struct  biiregs kdb_bi;
                     32:        short   kdb_xxx;        /* first half of GPR 0 unused */
                     33:        short   kdb_ip;         /* initialisation and polling */
                     34:        short   kdb_sa;         /* status & address (r/o half) */
                     35:        short   kdb_sw;         /* status & address (w/o half) */
                     36: };
                     37: 
                     38: /*
                     39:  * Bits in KDB status register during initialisation
                     40:  */
                     41: #define        KDB_ERR         0x8000  /* error */
                     42: #define        KDB_STEP4       0x4000  /* step 4 has started */
                     43: #define        KDB_STEP3       0x2000  /* step 3 has started */
                     44: #define        KDB_STEP2       0x1000  /* step 2 has started */
                     45: #define        KDB_STEP1       0x0800  /* step 1 has started */
                     46: #define        KDB_DI          0x0100  /* controller implements diagnostics */
                     47: #define        KDB_IE          0x0080  /* interrupt enable */
                     48: #define        KDB_NCNRMASK    0x003f  /* in STEP1, bits 0-2=NCMDL2, 3-5=NRSPL2 */
                     49: #define        KDB_IVECMASK    0x007f  /* in STEP2, bits 0-6 are interruptvec / 4 */
                     50: 
                     51: /* after initialisation: */
                     52: #define        KDB_GO          0x0001  /* run */
                     53: 
                     54: #define KDBSR_BITS \
                     55: "\20\20ERR\17STEP4\16STEP3\15STEP2\14STEP1\13oldNV\12oldQB\11DI\10IE\1GO"
                     56: 
                     57: /*
                     58:  * KDB Communications Area.  Note that this structure definition
                     59:  * requires NRSP and NCMD to be defined already.
                     60:  */
                     61: struct kdbca {
                     62:        short   ca_xxx1;        /* unused */
                     63:        char    ca_xxx2;        /* unused */
                     64:        char    ca_bdp;         /* BDP to purge  XXX */
                     65:        short   ca_cmdint;      /* command ring transition flag */
                     66:        short   ca_rspint;      /* response ring transition flag */
                     67:        long    ca_rspdsc[NRSP];/* response descriptors */
                     68:        long    ca_cmddsc[NCMD];/* command descriptors */
                     69: };
                     70: 
                     71: /*
                     72:  * Simplified routines (crash dump) use one command and one response.
                     73:  */
                     74: struct kdb1ca {
                     75:        long    ca_xxx;
                     76:        short   ca_cmdint;
                     77:        short   ca_rspint;
                     78:        long    ca_rspdsc;
                     79:        long    ca_cmddsc;
                     80: };
                     81: 
                     82: /*
                     83:  * Asserting KDB_MAP in values placed in mscp_seq.seq_buffer tells
                     84:  * the KDB to use mscp_seq.seq_mapbase as a set of PTEs and seq_buffer
                     85:  * as an offset value.  Hence we need no mappings; the KDB50 reads
                     86:  * the hardware page tables directly.  (Without KDB_MAP, seq_bufer
                     87:  * represents the physical memory address instead, and seq_mapbase is
                     88:  * unused.)
                     89:  */
                     90: #define        KDB_MAP         0x80000000
                     91: #define        KDB_PHYS        0               /* pseudo flag */
                     92: 
                     93: /*
                     94:  * KDB statistics.
                     95:  */
                     96: #define        KS_MAXC 32
                     97: 
                     98: struct kdbstats {
                     99:        int     ks_sys;         /* transfers done from Sysmap */
                    100:        int     ks_paget;       /* transfers done from Usrptmap */
                    101:        int     ks_contig;      /* transfers done from contiguous user map */
                    102:        int     ks_copies;      /* transfers done from pte copies */
                    103:        int     ks_mapwait;     /* number of out-of-map waits */
                    104:        int     ks_cmd[KS_MAXC];/* commands started at once */
                    105:        int     ks_inval;       /* copies due to !PG_V */
                    106: };

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