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 = CIA_ICR_IR_SC | CIA_ICR_SP; /* SP interrupt enable */ 67 ciaa.cra &= ~(1<<6); /* serial line == input */ 68 69 splx (s); 70 } 71 72 73 int 74 kbdintr (mask) 75 int mask; 76 { 77 u_char c, in; 78 79 /* now only invoked from generic CIA interrupt handler if there *is* 80 a keyboard interrupt pending */ 81 82 in = ciaa.sdr; 83 /* ack */ 84 ciaa.cra |= (1 << 6); /* serial line output */ 85 /* wait 85 microseconds */ 86 DELAY(85); 87 ciaa.cra &= ~(1 << 6); 88 89 c = ~in; /* keyboard data is inverted */ 90 91 /* process the character. 92 93 Should implement RAW mode for X11 later here !! */ 94 c = (c >> 1) | (c << 7); /* rotate right once */ 95 96 itefilter (c, ITEFILT_TTY); 97 98 /* XXX THIS IS WRONG!!! The screenblanker should route thru ite.c, which 99 should call thru it's driver table, ie. we need a new driver-dependant 100 function for this feature! */ 101 cc_unblank (); 102 } 103 104 105 int 106 kbdbell() 107 { 108 /* nice, mykes provided audio-support! */ 109 cc_bell (); 110 } 111 112 113 int 114 kbdgetcn () 115 { 116 int s = spltty (); 117 u_char ints, mask, c, in; 118 119 for (ints = 0; ! ((mask = ciaa.icr) & CIA_ICR_SP); ints |= mask) ; 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); 134 135 /* take care that no CIA-interrupts are lost */ 136 if (mask) 137 dispatch_cia_ints (0, mask); 138 139 return c; 140 } 141 142 #endif 143