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/* |
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* Copyright (C) 2003-2005 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: dev_pckbc.c,v 1.45 2005/06/02 15:42:49 debug Exp $ |
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* |
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* Standard 8042 PC keyboard controller (and a 8242WB PS2 keyboard/mouse |
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* controller), including the 8048 keyboard chip. |
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* |
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* |
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* TODO: Finish the rewrite for 8242. |
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*/ |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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|
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#include "console.h" |
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#include "cpu.h" |
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#include "devices.h" |
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#include "machine.h" |
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#include "memory.h" |
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#include "misc.h" |
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|
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#include "kbdreg.h" |
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|
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|
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/* #define PCKBC_DEBUG */ |
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|
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|
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#define MAX_8042_QUEUELEN 256 |
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|
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#define PC_DATA 0 |
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#define PC_CMD 0 |
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#define PC_STATUS 1 |
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|
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#define PS2_TXBUF 0 |
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#define PS2_RXBUF 1 |
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#define PS2_CONTROL 2 |
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#define PS2_STATUS 3 |
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|
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#define PS2 100 |
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|
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#define PCKBC_TICKSHIFT 14 |
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|
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struct pckbc_data { |
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int console_handle; |
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int in_use; |
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|
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int reg[DEV_PCKBC_LENGTH]; |
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int keyboard_irqnr; |
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int mouse_irqnr; |
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int type; |
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int pc_style_flag; |
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|
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/* TODO: one of these for each port? */ |
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int clocksignal; |
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int rx_int_enable; |
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int tx_int_enable; |
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|
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int keyscanning_enabled; |
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int state; |
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int cmdbyte; |
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int output_byte; |
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int last_scancode; |
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|
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unsigned key_queue[2][MAX_8042_QUEUELEN]; |
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int head[2], tail[2]; |
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}; |
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|
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#define STATE_NORMAL 0 |
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#define STATE_LDCMDBYTE 1 |
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#define STATE_RDCMDBYTE 2 |
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#define STATE_WAITING_FOR_TRANSLTABLE 3 |
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#define STATE_LDOUTPUT 4 |
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#define STATE_RDOUTPUT 5 |
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|
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|
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/* |
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* pckbc_add_code(): |
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* |
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* Adds a byte to the data queue. |
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*/ |
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void pckbc_add_code(struct pckbc_data *d, int code, int port) |
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{ |
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/* Add at the head, read at the tail: */ |
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d->head[port] = (d->head[port]+1) % MAX_8042_QUEUELEN; |
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if (d->head[port] == d->tail[port]) |
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fatal("[ pckbc: queue overrun, port %i! ]\n", port); |
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|
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d->key_queue[port][d->head[port]] = code; |
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} |
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|
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|
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/* |
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* pckbc_get_code(): |
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* |
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* Reads a byte from a data queue. |
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*/ |
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int pckbc_get_code(struct pckbc_data *d, int port) |
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{ |
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if (d->head[port] == d->tail[port]) |
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fatal("[ pckbc: queue empty, port %i! ]\n", port); |
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else |
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d->tail[port] = (d->tail[port]+1) % MAX_8042_QUEUELEN; |
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return d->key_queue[port][d->tail[port]]; |
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} |
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|
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|
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/* |
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* ascii_to_scancodes(): |
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* |
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* Conversion from ASCII codes to default (US) keyboard scancodes. |
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* (See http://www.win.tue.nl/~aeb/linux/kbd/scancodes-1.html) |
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*/ |
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static void ascii_to_pc_scancodes(int a, struct pckbc_data *d) |
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{ |
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int old_head; |
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int p = 0; /* port */ |
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int shift = 0, ctrl = 0; |
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|
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if (a >= 'A' && a <= 'Z') { a += 32; shift = 1; } |
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if ((a >= 1 && a <= 26) && (a!='\n' && a!='\t' && a!='\b' && a!='\r')) |
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{ a += 96; ctrl = 1; } |
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|
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if (shift) |
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pckbc_add_code(d, 0x2a, p); |
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else |
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pckbc_add_code(d, 0x2a + 0x80, p); |
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|
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if (ctrl) |
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pckbc_add_code(d, 0x1d, p); |
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|
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/* |
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* Note: The ugly hack used to add release codes for all of these |
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* keys is as follows: we remember how much of the kbd buf that |
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* is in use here, before we add any scancode. After we've added |
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* one or more scancodes (ie an optional shift + another key) |
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* then we duplicate the last scancode | 0x80 _if_ the kbd buf |
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* was altered. |
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*/ |
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|
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old_head = d->head[p]; |
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|
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if (a==27) pckbc_add_code(d, 0x01, p); |
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|
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if (a=='1') pckbc_add_code(d, 0x02, p); |
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if (a=='2') pckbc_add_code(d, 0x03, p); |
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if (a=='3') pckbc_add_code(d, 0x04, p); |
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if (a=='4') pckbc_add_code(d, 0x05, p); |
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if (a=='5') pckbc_add_code(d, 0x06, p); |
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if (a=='6') pckbc_add_code(d, 0x07, p); |
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if (a=='7') pckbc_add_code(d, 0x08, p); |
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if (a=='8') pckbc_add_code(d, 0x09, p); |
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if (a=='9') pckbc_add_code(d, 0x0a, p); |
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if (a=='0') pckbc_add_code(d, 0x0b, p); |
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if (a=='-') pckbc_add_code(d, 0x0c, p); |
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if (a=='=') pckbc_add_code(d, 0x0d, p); |
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|
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if (a=='!') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x02, p); } |
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if (a=='@') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x03, p); } |
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if (a=='#') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x04, p); } |
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if (a=='$') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x05, p); } |
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if (a=='%') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x06, p); } |
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if (a=='^') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x07, p); } |
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if (a=='&') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x08, p); } |
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if (a=='*') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x09, p); } |
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if (a=='(') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x0a, p); } |
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if (a==')') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x0b, p); } |
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if (a=='_') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x0c, p); } |
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if (a=='+') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x0d, p); } |
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|
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if (a=='\b') pckbc_add_code(d, 0x0e, p); |
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|
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if (a=='\t') pckbc_add_code(d, 0x0f, p); |
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if (a=='q') pckbc_add_code(d, 0x10, p); |
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if (a=='w') pckbc_add_code(d, 0x11, p); |
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if (a=='e') pckbc_add_code(d, 0x12, p); |
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if (a=='r') pckbc_add_code(d, 0x13, p); |
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if (a=='t') pckbc_add_code(d, 0x14, p); |
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if (a=='y') pckbc_add_code(d, 0x15, p); |
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if (a=='u') pckbc_add_code(d, 0x16, p); |
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if (a=='i') pckbc_add_code(d, 0x17, p); |
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if (a=='o') pckbc_add_code(d, 0x18, p); |
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if (a=='p') pckbc_add_code(d, 0x19, p); |
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|
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if (a=='[') pckbc_add_code(d, 0x1a, p); |
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if (a=='{') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x1a, p); } |
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if (a==']') pckbc_add_code(d, 0x1b, p); |
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if (a=='}') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x1b, p); } |
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|
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if (a=='\n' || a=='\r') pckbc_add_code(d, 0x1c, p); |
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|
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if (a=='a') pckbc_add_code(d, 0x1e, p); |
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if (a=='s') pckbc_add_code(d, 0x1f, p); |
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if (a=='d') pckbc_add_code(d, 0x20, p); |
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if (a=='f') pckbc_add_code(d, 0x21, p); |
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if (a=='g') pckbc_add_code(d, 0x22, p); |
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if (a=='h') pckbc_add_code(d, 0x23, p); |
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if (a=='j') pckbc_add_code(d, 0x24, p); |
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if (a=='k') pckbc_add_code(d, 0x25, p); |
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if (a=='l') pckbc_add_code(d, 0x26, p); |
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|
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if (a==';') pckbc_add_code(d, 0x27, p); |
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if (a==':') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x27, p); } |
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if (a=='\'') pckbc_add_code(d, 0x28, p); |
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if (a=='"') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x28, p); } |
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if (a=='~') pckbc_add_code(d, 0x29, p); |
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|
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if (a=='\\') pckbc_add_code(d, 0x2b, p); |
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if (a=='|') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x2b, p); } |
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|
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if (a=='z') pckbc_add_code(d, 0x2c, p); |
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if (a=='x') pckbc_add_code(d, 0x2d, p); |
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if (a=='c') pckbc_add_code(d, 0x2e, p); |
256 |
if (a=='v') pckbc_add_code(d, 0x2f, p); |
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if (a=='b') pckbc_add_code(d, 0x30, p); |
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if (a=='n') pckbc_add_code(d, 0x31, p); |
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if (a=='m') pckbc_add_code(d, 0x32, p); |
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|
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if (a==',') pckbc_add_code(d, 0x33, p); |
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if (a=='<') { pckbc_add_code(d, 0x2a, p); |
263 |
pckbc_add_code(d, 0x33, p); } |
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if (a=='.') pckbc_add_code(d, 0x34, p); |
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if (a=='>') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x34, p); } |
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if (a=='/') pckbc_add_code(d, 0x35, p); |
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if (a=='?') { pckbc_add_code(d, 0x2a, p); |
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pckbc_add_code(d, 0x35, p); } |
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|
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if (a==' ') pckbc_add_code(d, 0x39, p); |
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|
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/* Add release code, if a key was pressed: */ |
274 |
if (d->head[p] != old_head) { |
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int code = d->key_queue[p][d->head[p]] | 0x80; |
276 |
pckbc_add_code(d, code, p); |
277 |
} |
278 |
|
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/* Release ctrl: */ |
280 |
if (ctrl) |
281 |
pckbc_add_code(d, 0x1d + 0x80, p); |
282 |
} |
283 |
|
284 |
|
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/* |
286 |
* dev_pckbc_tick(): |
287 |
*/ |
288 |
void dev_pckbc_tick(struct cpu *cpu, void *extra) |
289 |
{ |
290 |
struct pckbc_data *d = extra; |
291 |
int port_nr, ch, ints_enabled; |
292 |
|
293 |
if (d->in_use && console_charavail(d->console_handle)) { |
294 |
ch = console_readchar(d->console_handle); |
295 |
if (ch >= 0) |
296 |
ascii_to_pc_scancodes(ch, d); |
297 |
} |
298 |
|
299 |
ints_enabled = d->rx_int_enable; |
300 |
|
301 |
/* TODO: mouse movements? */ |
302 |
|
303 |
if (d->cmdbyte & KC8_KDISABLE) |
304 |
ints_enabled = 0; |
305 |
|
306 |
for (port_nr=0; port_nr<2; port_nr++) { |
307 |
/* Cause receive interrupt, if there's something in the |
308 |
receive buffer: (Otherwise deassert the interrupt.) */ |
309 |
if (d->head[port_nr] != d->tail[port_nr] && ints_enabled) { |
310 |
cpu_interrupt(cpu, port_nr==0? d->keyboard_irqnr |
311 |
: d->mouse_irqnr); |
312 |
} else { |
313 |
cpu_interrupt_ack(cpu, port_nr==0? d->keyboard_irqnr |
314 |
: d->mouse_irqnr); |
315 |
} |
316 |
} |
317 |
} |
318 |
|
319 |
|
320 |
/* |
321 |
* dev_pckbc_command(): |
322 |
* |
323 |
* Handle commands to the 8048 in the emulated keyboard. |
324 |
*/ |
325 |
static void dev_pckbc_command(struct pckbc_data *d, int port_nr) |
326 |
{ |
327 |
int cmd = d->reg[PC_CMD]; |
328 |
|
329 |
if (d->type == PCKBC_8242) |
330 |
cmd = d->reg[PS2_TXBUF]; |
331 |
|
332 |
if (d->state == STATE_WAITING_FOR_TRANSLTABLE) { |
333 |
debug("[ pckbc: switching to translation table 0x%02x ]\n", |
334 |
cmd); |
335 |
pckbc_add_code(d, KBR_ACK, port_nr); |
336 |
d->state = STATE_NORMAL; |
337 |
return; |
338 |
} |
339 |
|
340 |
switch (cmd) { |
341 |
case 0x00: |
342 |
pckbc_add_code(d, KBR_ACK, port_nr); |
343 |
break; |
344 |
case KBC_MODEIND: /* Set LEDs */ |
345 |
/* Just ACK, no LEDs are actually set. */ |
346 |
pckbc_add_code(d, KBR_ACK, port_nr); |
347 |
break; |
348 |
case KBC_SETTABLE: |
349 |
pckbc_add_code(d, KBR_ACK, port_nr); |
350 |
d->state = STATE_WAITING_FOR_TRANSLTABLE; |
351 |
break; |
352 |
case KBC_ENABLE: |
353 |
d->keyscanning_enabled = 1; |
354 |
pckbc_add_code(d, KBR_ACK, port_nr); |
355 |
break; |
356 |
case KBC_DISABLE: |
357 |
d->keyscanning_enabled = 0; |
358 |
pckbc_add_code(d, KBR_ACK, port_nr); |
359 |
break; |
360 |
case KBC_SETDEFAULT: |
361 |
pckbc_add_code(d, KBR_ACK, port_nr); |
362 |
break; |
363 |
case KBC_RESET: |
364 |
pckbc_add_code(d, KBR_ACK, port_nr); |
365 |
pckbc_add_code(d, KBR_RSTDONE, port_nr); |
366 |
break; |
367 |
default: |
368 |
fatal("[ pckbc: UNIMPLEMENTED 8048 command 0x%02x ]\n", cmd); |
369 |
} |
370 |
} |
371 |
|
372 |
|
373 |
/* |
374 |
* dev_pckbc_access(): |
375 |
*/ |
376 |
int dev_pckbc_access(struct cpu *cpu, struct memory *mem, |
377 |
uint64_t relative_addr, unsigned char *data, size_t len, |
378 |
int writeflag, void *extra) |
379 |
{ |
380 |
uint64_t idata = 0, odata = 0; |
381 |
int i, port_nr = 0; |
382 |
struct pckbc_data *d = extra; |
383 |
|
384 |
idata = memory_readmax64(cpu, data, len); |
385 |
|
386 |
#ifdef PCKBC_DEBUG |
387 |
if (writeflag == MEM_WRITE) |
388 |
fatal("[ pckbc: write to addr 0x%x: 0x%x ]\n", |
389 |
(int)relative_addr, (int)idata); |
390 |
else |
391 |
fatal("[ pckbc: read from addr 0x%x ]\n", |
392 |
(int)relative_addr); |
393 |
#endif |
394 |
|
395 |
/* For JAZZ-based machines: */ |
396 |
if (relative_addr >= 0x60) { |
397 |
relative_addr -= 0x60; |
398 |
if (relative_addr != 0) |
399 |
relative_addr = 1; |
400 |
} else if (d->type == PCKBC_8242) { |
401 |
/* 8242 PS2-style: */ |
402 |
/* when using 8-byte alignment... */ |
403 |
relative_addr /= sizeof(uint64_t); |
404 |
/* port_nr = 0 for keyboard, 1 for mouse */ |
405 |
port_nr = (relative_addr >> 2); |
406 |
relative_addr &= 3; |
407 |
relative_addr += PS2; |
408 |
} else if (d->pc_style_flag) { |
409 |
/* PC-style: */ |
410 |
if (relative_addr != 0 && relative_addr != 4) { |
411 |
/* TODO (port 0x61) */ |
412 |
odata = 0x21; |
413 |
{ |
414 |
static int x = 0; |
415 |
x++; |
416 |
if (x&1) |
417 |
odata ^= 0x10; |
418 |
} |
419 |
if (writeflag == MEM_READ) |
420 |
memory_writemax64(cpu, data, len, odata); |
421 |
return 0; |
422 |
} |
423 |
if (relative_addr != 0) |
424 |
relative_addr = 1; |
425 |
} else { |
426 |
/* Others... Non-Jazz ARC-based machines etc. */ |
427 |
if (relative_addr != 0) |
428 |
relative_addr = 1; |
429 |
} |
430 |
|
431 |
switch (relative_addr) { |
432 |
|
433 |
/* |
434 |
* 8042 (PC): |
435 |
*/ |
436 |
|
437 |
case 0: /* data */ |
438 |
if (writeflag==MEM_READ) { |
439 |
switch (d->state) { |
440 |
case STATE_RDCMDBYTE: |
441 |
odata = d->cmdbyte; |
442 |
d->state = STATE_NORMAL; |
443 |
break; |
444 |
case STATE_RDOUTPUT: |
445 |
odata = d->output_byte; |
446 |
d->state = STATE_NORMAL; |
447 |
break; |
448 |
default:if (d->head[0] != d->tail[0]) { |
449 |
odata = pckbc_get_code(d, 0); |
450 |
d->last_scancode = odata; |
451 |
} else { |
452 |
odata = d->last_scancode; |
453 |
d->last_scancode |= 0x80; |
454 |
} |
455 |
} |
456 |
/* debug("[ pckbc: read from DATA: 0x%02x ]\n", |
457 |
odata); */ |
458 |
} else { |
459 |
debug("[ pckbc: write to DATA:"); |
460 |
for (i=0; i<len; i++) |
461 |
debug(" %02x", data[i]); |
462 |
debug(" ]\n"); |
463 |
|
464 |
switch (d->state) { |
465 |
case STATE_LDCMDBYTE: |
466 |
d->cmdbyte = idata; |
467 |
d->rx_int_enable = d->cmdbyte & |
468 |
(KC8_KENABLE | KC8_MENABLE) ? 1 : 0; |
469 |
d->state = STATE_NORMAL; |
470 |
break; |
471 |
case STATE_LDOUTPUT: |
472 |
d->output_byte = idata; |
473 |
d->state = STATE_NORMAL; |
474 |
break; |
475 |
default:d->reg[relative_addr] = idata; |
476 |
dev_pckbc_command(d, port_nr); |
477 |
} |
478 |
} |
479 |
break; |
480 |
case 1: /* control */ |
481 |
if (writeflag==MEM_READ) { |
482 |
dev_pckbc_tick(cpu, d); |
483 |
|
484 |
odata = 0; |
485 |
|
486 |
/* "Data in buffer" bit */ |
487 |
if (d->head[0] != d->tail[0] || |
488 |
d->state == STATE_RDCMDBYTE || |
489 |
d->state == STATE_RDOUTPUT) |
490 |
odata |= KBS_DIB; |
491 |
|
492 |
if (d->state == STATE_RDCMDBYTE) |
493 |
odata |= KBS_OCMD; |
494 |
|
495 |
odata |= KBS_NOSEC; |
496 |
/* debug("[ pckbc: read from CTL status port: " |
497 |
"0x%02x ]\n", (int)odata); */ |
498 |
} else { |
499 |
debug("[ pckbc: write to CTL:"); |
500 |
for (i=0; i<len; i++) |
501 |
debug(" %02x", data[i]); |
502 |
debug(" ]\n"); |
503 |
d->reg[relative_addr] = idata; |
504 |
|
505 |
switch (idata) { |
506 |
case K_RDCMDBYTE: |
507 |
d->state = STATE_RDCMDBYTE; |
508 |
break; |
509 |
case K_LDCMDBYTE: |
510 |
d->state = STATE_LDCMDBYTE; |
511 |
break; |
512 |
case 0xa7: |
513 |
d->cmdbyte |= KC8_MDISABLE; |
514 |
break; |
515 |
case 0xa8: |
516 |
d->cmdbyte &= ~KC8_MDISABLE; |
517 |
break; |
518 |
case 0xa9: /* test auxiliary port */ |
519 |
debug("[ pckbc: CONTROL 0xa9, TODO ]\n"); |
520 |
break; |
521 |
case 0xaa: /* keyboard self-test */ |
522 |
pckbc_add_code(d, 0x55, port_nr); |
523 |
break; |
524 |
case 0xad: |
525 |
d->cmdbyte |= KC8_KDISABLE; |
526 |
break; |
527 |
case 0xae: |
528 |
d->cmdbyte &= ~KC8_KDISABLE; |
529 |
break; |
530 |
case 0xd0: |
531 |
d->state = STATE_RDOUTPUT; |
532 |
break; |
533 |
case 0xd1: |
534 |
d->state = STATE_LDOUTPUT; |
535 |
break; |
536 |
case 0xd4: /* write to auxiliary port */ |
537 |
debug("[ pckbc: CONTROL 0xd4, TODO ]\n"); |
538 |
break; |
539 |
default: |
540 |
fatal("[ pckbc: unknown CONTROL 0x%x ]\n", |
541 |
idata); |
542 |
d->state = STATE_NORMAL; |
543 |
} |
544 |
} |
545 |
break; |
546 |
|
547 |
/* |
548 |
* 8242 (PS2): |
549 |
*/ |
550 |
|
551 |
/* |
552 |
* BIG TODO: The following should be rewritten to use dev_pckbc_command() |
553 |
* etc, like the 8042 code above does. |
554 |
*/ |
555 |
|
556 |
case PS2 + PS2_TXBUF: |
557 |
if (writeflag==MEM_READ) { |
558 |
odata = random() & 0xff; |
559 |
debug("[ pckbc: read from port %i, PS2_TXBUF: " |
560 |
"0x%x ]\n", port_nr, (int)odata); |
561 |
} else { |
562 |
debug("[ pckbc: write to port %i, PS2_TXBUF: " |
563 |
"0x%llx ]\n", port_nr, (long long)idata); |
564 |
|
565 |
/* Handle keyboard commands: */ |
566 |
switch (idata) { |
567 |
/* These are incorrect, the second byte of |
568 |
commands should be treated better: */ |
569 |
case 0x00: /* second byte of 0xed, |
570 |
SGI-IP32's prom */ |
571 |
pckbc_add_code(d, 0x03, port_nr);/* ack (?) */ |
572 |
break; |
573 |
case 0x14: /* second byte of 0xfc, |
574 |
SGI-IP32's prom */ |
575 |
case 0x28: /* second byte of 0xf3, |
576 |
SGI-IP32's prom */ |
577 |
case 0x76: /* third byte of 0xfc, |
578 |
SGI-IP32's prom */ |
579 |
case 0x03: /* second byte of |
580 |
ATKBD_CMD_GSCANSET (?) */ |
581 |
case 0x04: |
582 |
pckbc_add_code(d, 0x03, port_nr);/* ? */ |
583 |
break; |
584 |
|
585 |
/* Command bytes: */ |
586 |
case 0xf0: /* ATKBD_CMD_GSCANSET (?) */ |
587 |
pckbc_add_code(d, 0x03, port_nr);/* ? */ |
588 |
break; |
589 |
case 0xf2: /* Get keyboard ID */ |
590 |
/* The keyboard should generate 2 |
591 |
status bytes. */ |
592 |
pckbc_add_code(d, 0xab, port_nr); |
593 |
pckbc_add_code(d, 0x83, port_nr); |
594 |
break; |
595 |
case 0xed: /* "ATKBD_CMD_SETLEDS", |
596 |
takes 1 byte arg */ |
597 |
case 0xf3: /* "PSMOUSE_CMD_SETRATE", |
598 |
takes 1 byte arg */ |
599 |
case 0xf4: /* "ATKBD_CMD_ENABLE" (or |
600 |
PSMOUSE_CMD_ENABLE), no args */ |
601 |
case 0xf5: /* "ATKBD_CMD_RESET_DIS" (keyboard, |
602 |
according to Linux sources) */ |
603 |
case 0xf6: /* "PSMOUSE_CMD_RESET_DIS" (mouse, |
604 |
according to Linux sources) */ |
605 |
/* TODO: what does this do? */ |
606 |
pckbc_add_code(d, 0xfa, port_nr);/* ack (?) */ |
607 |
break; |
608 |
case 0xfa: /* "ATKBD_CMD_SETALL_MBR" (linux) */ |
609 |
pckbc_add_code(d, 0xfa, port_nr);/* ack (?) */ |
610 |
break; |
611 |
case 0xfc: /* ? */ |
612 |
pckbc_add_code(d, 0xfa, port_nr);/* ack (?) */ |
613 |
break; |
614 |
case 0xff: /* Keyboard reset */ |
615 |
/* The keyboard should generate 2 |
616 |
status bytes. */ |
617 |
pckbc_add_code(d, 0xfa, port_nr);/* ack (?) */ |
618 |
pckbc_add_code(d, 0xaa, port_nr); |
619 |
/* battery ok (?) */ |
620 |
break; |
621 |
default: |
622 |
debug("[ pckbc: UNIMPLEMENTED keyboard command" |
623 |
" 0x%02x (port %i) ]\n", (int)idata, |
624 |
port_nr); |
625 |
} |
626 |
} |
627 |
break; |
628 |
|
629 |
case PS2 + PS2_RXBUF: |
630 |
if (writeflag==MEM_READ) { |
631 |
/* TODO: What should be returned if no data |
632 |
is available? */ |
633 |
odata = random() & 0xff; |
634 |
if (d->head[port_nr] != d->tail[port_nr]) |
635 |
odata = pckbc_get_code(d, port_nr); |
636 |
debug("[ pckbc: read from port %i, PS2_RXBUF: " |
637 |
"0x%02x ]\n", port_nr, (int)odata); |
638 |
} else { |
639 |
debug("[ pckbc: write to port %i, PS2_RXBUF: " |
640 |
"0x%llx ]\n", port_nr, (long long)idata); |
641 |
} |
642 |
break; |
643 |
|
644 |
case PS2 + PS2_CONTROL: |
645 |
if (writeflag==MEM_READ) { |
646 |
debug("[ pckbc: read from port %i, PS2_CONTROL" |
647 |
" ]\n", port_nr); |
648 |
} else { |
649 |
debug("[ pckbc: write to port %i, PS2_CONTROL:" |
650 |
" 0x%llx ]\n", port_nr, (long long)idata); |
651 |
d->clocksignal = (idata & 0x10) ? 1 : 0; |
652 |
d->rx_int_enable = (idata & 0x08) ? 1 : 0; |
653 |
d->tx_int_enable = (idata & 0x04) ? 1 : 0; |
654 |
} |
655 |
break; |
656 |
|
657 |
case PS2 + PS2_STATUS: |
658 |
if (writeflag==MEM_READ) { |
659 |
/* 0x08 = transmit buffer empty */ |
660 |
odata = d->clocksignal + 0x08; |
661 |
|
662 |
if (d->head[port_nr] != d->tail[port_nr]) { |
663 |
/* 0x10 = receicer data available (?) */ |
664 |
odata |= 0x10; |
665 |
} |
666 |
|
667 |
debug("[ pckbc: read from port %i, PS2_STATUS: " |
668 |
"0x%llx ]\n", port_nr, (long long)odata); |
669 |
} else { |
670 |
debug("[ pckbc: write to port %i, PS2_STATUS: " |
671 |
"0x%llx ]\n", port_nr, (long long)idata); |
672 |
} |
673 |
break; |
674 |
|
675 |
default: |
676 |
if (writeflag==MEM_READ) { |
677 |
debug("[ pckbc: read from unimplemented reg %i ]\n", |
678 |
(int)relative_addr); |
679 |
odata = d->reg[relative_addr]; |
680 |
} else { |
681 |
debug("[ pckbc: write to unimplemented reg %i:", |
682 |
(int)relative_addr); |
683 |
for (i=0; i<len; i++) |
684 |
debug(" %02x", data[i]); |
685 |
debug(" ]\n"); |
686 |
d->reg[relative_addr] = idata; |
687 |
} |
688 |
} |
689 |
|
690 |
if (writeflag == MEM_READ) |
691 |
memory_writemax64(cpu, data, len, odata); |
692 |
|
693 |
dev_pckbc_tick(cpu, d); |
694 |
|
695 |
return 1; |
696 |
} |
697 |
|
698 |
|
699 |
/* |
700 |
* dev_pckbc_init(): |
701 |
* |
702 |
* Type should be PCKBC_8042 or PCKBC_8242. |
703 |
*/ |
704 |
int dev_pckbc_init(struct machine *machine, struct memory *mem, |
705 |
uint64_t baseaddr, int type, int keyboard_irqnr, int mouse_irqnr, |
706 |
int in_use, int pc_style_flag) |
707 |
{ |
708 |
struct pckbc_data *d; |
709 |
int len = DEV_PCKBC_LENGTH; |
710 |
|
711 |
d = malloc(sizeof(struct pckbc_data)); |
712 |
if (d == NULL) { |
713 |
fprintf(stderr, "out of memory\n"); |
714 |
exit(1); |
715 |
} |
716 |
memset(d, 0, sizeof(struct pckbc_data)); |
717 |
|
718 |
if (type == PCKBC_JAZZ) { |
719 |
type = PCKBC_8042; |
720 |
len = DEV_PCKBC_LENGTH + 0x60; |
721 |
} |
722 |
|
723 |
d->type = type; |
724 |
d->keyboard_irqnr = keyboard_irqnr; |
725 |
d->mouse_irqnr = mouse_irqnr; |
726 |
d->in_use = in_use; |
727 |
d->pc_style_flag = pc_style_flag; |
728 |
d->console_handle = console_start_slave_inputonly(machine, "pckbc"); |
729 |
d->rx_int_enable = 1; |
730 |
d->output_byte = 0x02; /* A20 enable on PCs */ |
731 |
|
732 |
memory_device_register(mem, "pckbc", baseaddr, |
733 |
len, dev_pckbc_access, d, MEM_DEFAULT, NULL); |
734 |
machine_add_tickfunction(machine, dev_pckbc_tick, d, PCKBC_TICKSHIFT); |
735 |
|
736 |
return d->console_handle; |
737 |
} |
738 |
|