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/* $NetBSD: scc.h,v 1.1.1.1 1995/07/25 23:12:07 chuck Exp $ */
/*
* Copyright (c) 1993 Paul Mackerras.
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software withough specific prior written permission
*
* 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.
*/
/*
* SCC I/O register definitions
*/
#define PCLK_FREQ 8333333 /* XXX */
struct scc {
unsigned char cr;
unsigned char dr;
};
struct sccregs {
volatile struct scc *s_adr;
unsigned char s_val[16];
};
#define ZREAD0(scc) ((scc)->s_adr->cr)
#define ZREAD(scc, n) ((scc)->s_adr->cr = n, (scc)->s_adr->cr)
#define ZREADD(scc) ((scc)->s_adr->dr)
#define ZWRITE0(scc, v) ((scc)->s_adr->cr = v)
#define ZWRITE(scc, n, v) (ZWRITE0(scc, n), ZWRITE0(scc, (scc)->s_val[n] = v))
#define ZWRITED(scc, v) ((scc)->s_adr->dr = v)
#define ZBIS(scc, n, v) (ZWRITE(scc, n, (scc)->s_val[n] | (v)))
#define ZBIC(scc, n, v) (ZWRITE(scc, n, (scc)->s_val[n] & ~(v)))
#define SCC_RXFULL 1 /* bits in rr0 */
#define SCC_TXRDY 4
#define SCC_DCD 8
#define SCC_CTS 0x20
#define SCC_RCVEN 1 /* bits in wr3 */
#define SCC_RTS 2 /* bits in wr5 */
#define SCC_DTR 0x80
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