usr/src/sys/news3400/sio/scc.h

/*
 * Copyright (c) 1992, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Sony Corp. and Kazumasa Utashiro of Software Research Associates, Inc.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
 *
 * from: $Hdr: scc.h,v 4.300 91/06/09 06:44:56 root Rel41 $ SONY
 *
 *      @(#)scc.h       8.1 (Berkeley) 6/11/93
 */

#ifdef news3400
#define splscc          spl4
#endif

#define SCCWAIT         DELAY(2)

#define SCC_REMOTE0     0
#define SCC_REMOTE1     1
#define SCC_REMOTE2     2
#define SCC_REMOTE3     3
#define SCC_REMOTE4     4
#define SCC_REMOTE5     5
#define SCC_REMOTE6     6
#define SCC_REMOTE7     7
#define SCC_REMOTE8     8
#define SCC_REMOTE9     9

#define SCCVEC0         64
#define SCCVEC1         (SCCVEC0+16)
#define SCCVEC2         (SCCVEC0+32)
#define SCCVEC3         (SCCVEC0+48)
#define SCCVEC4         (SCCVEC0+64)

/*
 *      SCC channel control block
 */
typedef struct scc_dma {
        char    *dma_addr;
        int     dma_count;
} Scc_dma;

typedef struct scc_channel {
        int     scc_status;             /* channel status               */
        int     scc_param;              /* channel parameter            */
        struct  scc_reg *scc_port;      /* port address                 */
        char    *scc_init;              /* initialize data              */
        int     scc_vec;                /* interrupt vector             */
        Scc_dma x_dma;
        Scc_dma r_dma;
} Scc_channel;

/*
 *      SCC channel status
 */
#define OACTIVE         0x00000001      /* transmit in progress */
#define OSTOP           0x00000002      /* output stop request  */
#define OFLUSH          0x00000004      /* output flush request */
#define OBUSY           0x00000008      /* output in use        */
#define LINE_BREAK      0x00000010      /* line break interrupt */
#define ENABLE          0x00000020      /* receiver enable      */
#define CHAN_ACTIVE     0x80000000      /* channel active       */

/*
 *      SCC channel usage
 */
#define SCC_MOUSE       0
#define SCC_KEYBOARD    1