Annotation of sys/arch/alpha/tc/sccvar.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: sccvar.h,v 1.6 2003/06/02 23:27:44 millert Exp $ */
2: /* $NetBSD: sccvar.h,v 1.7 2001/08/26 16:39:56 simonb Exp $ */
3:
4: /*
5: * Copyright (c) 1991,1990,1989,1994,1995 Carnegie Mellon University
6: * All Rights Reserved.
7: *
8: * Permission to use, copy, modify and distribute this software and its
9: * documentation is hereby granted, provided that both the copyright
10: * notice and this permission notice appear in all copies of the
11: * software, derivative works or modified versions, and any portions
12: * thereof, and that both notices appear in supporting documentation.
13: *
14: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
15: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
16: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
17: *
18: * Carnegie Mellon requests users of this software to return to
19: *
20: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
21: * School of Computer Science
22: * Carnegie Mellon University
23: * Pittsburgh PA 15213-3890
24: *
25: * any improvements or extensions that they make and grant Carnegie Mellon
26: * the rights to redistribute these changes.
27: */
28:
29: /*-
30: * Copyright (c) 1992, 1993
31: * The Regents of the University of California. All rights reserved.
32: *
33: * This code is derived from software contributed to Berkeley by
34: * Ralph Campbell and Rick Macklem.
35: *
36: * Redistribution and use in source and binary forms, with or without
37: * modification, are permitted provided that the following conditions
38: * are met:
39: * 1. Redistributions of source code must retain the above copyright
40: * notice, this list of conditions and the following disclaimer.
41: * 2. Redistributions in binary form must reproduce the above copyright
42: * notice, this list of conditions and the following disclaimer in the
43: * documentation and/or other materials provided with the distribution.
44: * 3. Neither the name of the University nor the names of its contributors
45: * may be used to endorse or promote products derived from this software
46: * without specific prior written permission.
47: *
48: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58: * SUCH DAMAGE.
59: *
60: * from: @(#)sccreg.h 8.1 (Berkeley) 6/10/93
61: */
62:
63: /*
64: * Definitions for Intel 82530 serial communications chip. Each chip is a
65: * dual uart with the A channels used for the keyboard and mouse with the B
66: * channel(s) for comm ports with modem control. Since some registers are
67: * used for the other channel, the following macros are used to access the
68: * register ports.
69: */
70:
71: #if 1
72: #define alpha_sparse
73: #endif
74:
75: #define DENSE
76: #ifdef alpha_sparse
77: #undef DENSE
78: #define SPARSE
79: #endif
80:
81: typedef struct {
82: struct {
83: volatile u_int scc_command; /* Register select. */
84: #ifdef SPARSE
85: u_int scc_pad0;
86: #endif
87: volatile u_int scc_data; /* Rx/Tx buffer */
88: #ifdef SPARSE
89: u_int scc_pad1;
90: #endif
91: } scc_channel[2];
92: } scc_regmap_t;
93:
94: #define scc_get_datum(d, v) \
95: do { (v) = ((d) >> 8) & 0xff; alpha_mb(); DELAY(5); } while (0)
96: #define scc_set_datum(d, v) \
97: do { (d) = (volatile unsigned int)(v) << 8; alpha_mb(); DELAY(5); } while (0)
98:
99: /* From <pmax/dev/pdma.h>. */
100: struct pdma {
101: void *p_addr;
102: char *p_mem;
103: char *p_end;
104: int p_arg;
105: void (*p_fcn)(struct tty *tp);
106: };
107:
108: /*
109: * Minor device numbers for scc. Weird because B channel comes first and
110: * the A channels are wired for keyboard/mouse and the B channels for the
111: * comm port(s).
112: */
113: #define SCCCOMM2_PORT 0x0
114: #define SCCMOUSE_PORT 0x1
115: #define SCCCOMM3_PORT 0x2
116: #define SCCKBD_PORT 0x3
117:
118: int alpha_donot_kludge_scc;
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