/*      $NetBSD: cca.h,v 1.3 2017/05/22 17:12:11 ragge Exp $    */

/*
 * Copyright (c) 2000 Ludd, University of Lule}, Sweden. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Console Communication Area (CCA) layout description.
 * OBS! This is incomplete and should be filled out if someone
 * find docs for it.
 */

struct cca {
        struct cca *cca_base;   /* Physical base address of block */
        uint16_t cca_size;      /* Size of this struct */
        uint16_t cca_id;        /* 'CC' */
        uint8_t  cca_maxcpu;    /* max number of CPUs */
        uint8_t  cca_cksum;     /* Checksum of all earlier bytes */
        uint8_t  cca_flags;
        uint8_t  cca_revision;

        uint64_t cca_ready;     /* Data ready? */
        uint64_t cca_console;   /* Processors in console mode */
        uint64_t cca_enabled;   /* enabled/disabled */
        uint32_t cca_bitmapsz;  /* Size of memory bitmap */
        uint32_t cca_bitmap;    /* Address of memory bitmap */
        uint32_t cca_bmcksum;   /* Bitmap checksum */
        uint32_t cca_bootdev;   /* Node numbers */
        uint64_t cca_starting;  /* Processors currently starting */
        uint64_t cca_restart;   /* Processors currently restarting */
        uint32_t cca_pad1[3];
        uint64_t cca_halted;    /* Processors currently halted bny user */
        uint8_t  cca_sernum[8]; /* Serial number */
        uint8_t  cca_revs[16][8];/* CPU revisions */
        uint64_t cca_vecenab;   /* Processors with enabled vector processors */
        uint64_t cca_vecwork;   /* Processors with working vector processors */
        uint32_t cca_vecrevs[16];/* Vector processor revisions */
        uint8_t  cca_pad2[208];
/* Inter-CPU communication structs */
        struct {
                uint8_t cc_flags;       /* Status flags */
                uint8_t cc_to;          /* Node sending to */
                uint8_t cc_from;        /* Node sending from */
                uint8_t cc_pad;
                uint8_t cc_txlen;       /* Length of transmit message */
                uint8_t cc_rxlen;       /* Length of receive message */
                uint8_t cc_unbuf;
                char    cc_txbuf[80];   /* Transmit buffer */
                char    cc_rxbuf[80];   /* Receive buffer */
        } cca_cc[64];
};

#ifdef _KERNEL
extern  struct cca *cca;
#endif