1 /* 2 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * kbd.c 34 */ 35 36 #include "ite.h" 37 38 #if NITE > 0 39 #include "sys/param.h" 40 #include "sys/systm.h" 41 #include "sys/ioctl.h" 42 #include "sys/tty.h" 43 #include "sys/proc.h" 44 #include "sys/conf.h" 45 #include "sys/file.h" 46 #include "sys/uio.h" 47 #include "sys/kernel.h" 48 #include "sys/syslog.h" 49 50 #include "device.h" 51 #include "kbdreg.h" 52 #include "itevar.h" 53 #include "machine/cpu.h" 54 55 #include "../amiga/custom.h" 56 #include "../amiga/cia.h" 57 58 void 59 kbdenable () 60 { 61 int s = spltty(); 62 63 /* collides with external ints from SCSI, watch out for this when 64 enabling/disabling interrupts there !! */ 65 custom.intena = INTF_SETCLR | INTF_PORTS; 66 ciaa.icr = (1<<7) | (1<<3); /* SP interrupt enable */ 67 ciaa.cra &= ~(1<<6); /* serial line == input */ 68 69 splx (s); 70 } 71 72 73 int 74 kbdintr () 75 { 76 /* THIS CLEARS ALL INTERRUPTS FROM CIAA! Will need a special cia 77 interrupt handler to be able to use the ciaa timers besides driving 78 the keyboard !! */ 79 u_char ints = ciaa.icr; 80 u_char c, in; 81 82 if (! (ints & (1<<3))) 83 return 0; 84 85 in = ciaa.sdr; 86 /* ack */ 87 ciaa.cra |= (1 << 6); /* serial line output */ 88 /* wait 85 microseconds */ 89 DELAY(85); 90 ciaa.cra &= ~(1 << 6); 91 92 c = ~in; /* keyboard data is inverted */ 93 94 /* process the character. 95 96 Should implement RAW mode for X11 later here !! */ 97 c = (c >> 1) | (c << 7); /* rotate right once */ 98 99 itefilter (c, ITEFILT_TTY); 100 } 101 102 103 int 104 kbdbell() 105 { 106 107 /* not yet.. */ 108 109 } 110 111 112 int 113 kbdgetcn () 114 { 115 int s = spltty (); 116 u_char ints, c, in; 117 118 /* this is very very nasty... */ 119 while (! (ciaa.icr & (1<<3))) ; 120 121 in = ciaa.sdr; 122 c = ~in; 123 124 /* ack */ 125 ciaa.cra |= (1 << 6); /* serial line output */ 126 ciaa.sdr = 0xff; /* ack */ 127 /* wait 85 microseconds */ 128 DELAY(85); /* XXXX only works as long as DELAY doesn't use a timer and waits.. */ 129 ciaa.cra &= ~(1 << 6); 130 ciaa.sdr = in; 131 132 splx (s); 133 c = (c >> 1) | (c << 7); 134 return c; 135 } 136 137 #endif 138