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1.1 root 1: /*
2: * Copyright (c) 1988 University of Utah.
3: * Copyright (c) 1990 The Regents of the University of California.
4: * All rights reserved.
5: *
6: * This code is derived from software contributed to Berkeley by
7: * the Systems Programming Group of the University of Utah Computer
8: * Science Department.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the University of
21: * California, Berkeley and its contributors.
22: * 4. Neither the name of the University nor the names of its contributors
23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: *
1.1.1.2 ! root 38: * from: @(#)dcm.c 7.3 (Berkeley) 5/7/91
! 39: * dcm.c,v 1.2 1993/05/22 07:58:52 cgd Exp
1.1 root 40: */
41:
42: #ifdef DCMCONSOLE
43: #include "sys/param.h"
44: #include "../hp300/cons.h"
45: #include "../dev/device.h"
46: #include "../dev/dcmreg.h"
47:
48: struct dcmdevice *dcmcnaddr = NULL;
49:
50: dcmprobe(cp)
51: struct consdev *cp;
52: {
53: extern struct hp_hw sc_table[];
54: register struct hp_hw *hw;
55: register struct dcmdevice *dcm;
56:
57: for (hw = sc_table; hw < &sc_table[MAXCTLRS]; hw++)
58: if (HW_ISDEV(hw, D_COMMDCM) && !badaddr((caddr_t)hw->hw_kva))
59: break;
60: if (!HW_ISDEV(hw, D_COMMDCM)) {
61: cp->cn_pri = CN_DEAD;
62: return;
63: }
64: dcmcnaddr = (struct dcmdevice *) hw->hw_kva;
65:
66: dcm = dcmcnaddr;
67: switch (dcm->dcm_rsid) {
68: case DCMID:
69: cp->cn_pri = CN_NORMAL;
70: break;
71: case DCMID|DCMCON:
72: cp->cn_pri = CN_REMOTE;
73: break;
74: default:
75: cp->cn_pri = CN_DEAD;
76: break;
77: }
78: }
79:
80: dcminit(cp)
81: struct consdev *cp;
82: {
83: register struct dcmdevice *dcm = dcmcnaddr;
84: register int port = CONUNIT;
85:
86: dcm->dcm_ic = IC_ID;
87: while (dcm->dcm_thead[port].ptr != dcm->dcm_ttail[port].ptr)
88: ;
89: dcm->dcm_data[port].dcm_baud = BR_9600;
90: dcm->dcm_data[port].dcm_conf = LC_8BITS | LC_1STOP;
91: SEM_LOCK(dcm);
92: dcm->dcm_cmdtab[port].dcm_data |= CT_CON;
93: dcm->dcm_cr |= (1 << port);
94: SEM_UNLOCK(dcm);
95: DELAY(15000);
96: }
97:
98: #ifndef SMALL
99: dcmgetchar()
100: {
101: register struct dcmdevice *dcm = dcmcnaddr;
102: register struct dcmrfifo *fifo;
103: register struct dcmpreg *pp;
104: register unsigned head;
105: int c, stat, port;
106:
107: port = CONUNIT;
108: pp = dcm_preg(dcm, port);
109: head = pp->r_head & RX_MASK;
110: if (head == (pp->r_tail & RX_MASK))
111: return(0);
112: fifo = &dcm->dcm_rfifos[3-port][head>>1];
113: c = fifo->data_char;
114: stat = fifo->data_stat;
115: pp->r_head = (head + 2) & RX_MASK;
116: SEM_LOCK(dcm);
117: stat = dcm->dcm_iir;
118: SEM_UNLOCK(dcm);
119: return(c);
120: }
121: #else
122: dcmgetchar()
123: {
124: return(0);
125: }
126: #endif
127:
128: dcmputchar(c)
129: register int c;
130: {
131: register struct dcmdevice *dcm = dcmcnaddr;
132: register struct dcmpreg *pp;
133: register int timo;
134: unsigned tail;
135: int port, stat;
136:
137: port = CONUNIT;
138: pp = dcm_preg(dcm, port);
139: tail = pp->t_tail & TX_MASK;
140: timo = 50000;
141: while (tail != (pp->t_head & TX_MASK) && --timo)
142: ;
143: dcm->dcm_tfifos[3-port][tail].data_char = c;
144: pp->t_tail = tail = (tail + 1) & TX_MASK;
145: SEM_LOCK(dcm);
146: dcm->dcm_cmdtab[port].dcm_data |= CT_TX;
147: dcm->dcm_cr |= (1 << port);
148: SEM_UNLOCK(dcm);
149: timo = 1000000;
150: while (tail != (pp->t_head & TX_MASK) && --timo)
151: ;
152: SEM_LOCK(dcm);
153: stat = dcm->dcm_iir;
154: SEM_UNLOCK(dcm);
155: }
156: #endif
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