[unix-history] / usr / src / sys / news3400 / sio / scc.h

/*
* Copyright (c) 1992 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.
*
* %sccs.include.redist.c%
*
* from: $Hdr: scc.h,v 4.300 91/06/09 06:44:56 root Rel41 $ SONY
*
*      @(#)scc.h       7.2 (Berkeley) %G%
*/

#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