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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 1.53 2005/10/26 14:37:04 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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/* #define debug fatal */ |
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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 15 |
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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 currently_asserted[2]; |
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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 translation_table; |
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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_WAITING_FOR_F3 4 |
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#define STATE_WAITING_FOR_FC 5 |
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#define STATE_LDOUTPUT 6 |
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#define STATE_RDOUTPUT 7 |
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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_type3(): |
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* |
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* Conversion from ASCII codes to default (US) keyboard scancodes. |
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* (See http://www.computer-engineering.org/ps2keyboard/scancodes3.html) |
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*/ |
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static void ascii_to_pc_scancodes_type3(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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if (a=='!') { a = '1'; shift = 1; } |
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if (a=='@') { a = '2'; shift = 1; } |
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if (a=='#') { a = '3'; shift = 1; } |
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if (a=='$') { a = '4'; shift = 1; } |
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if (a=='%') { a = '5'; shift = 1; } |
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if (a=='^') { a = '6'; shift = 1; } |
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if (a=='&') { a = '7'; shift = 1; } |
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if (a=='*') { a = '8'; shift = 1; } |
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if (a=='(') { a = '9'; shift = 1; } |
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if (a==')') { a = '0'; shift = 1; } |
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if (a=='_') { a = '-'; shift = 1; } |
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if (a=='+') { a = '='; shift = 1; } |
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if (a=='{') { a = '['; shift = 1; } |
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if (a=='}') { a = ']'; shift = 1; } |
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if (a==':') { a = ';'; shift = 1; } |
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if (a=='"') { a = '\''; shift = 1; } |
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if (a=='|') { a = '\\'; shift = 1; } |
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if (a=='<') { a = ','; shift = 1; } |
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if (a=='>') { a = '.'; shift = 1; } |
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if (a=='?') { a = '/'; shift = 1; } |
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|
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if (shift) |
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pckbc_add_code(d, 0x12, p); |
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if (ctrl) |
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pckbc_add_code(d, 0x11, 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 add 0xf0 + the last scancode _if_ the kbd buf 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, 0x08, p); |
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|
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if (a=='1') pckbc_add_code(d, 0x16, p); |
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if (a=='2') pckbc_add_code(d, 0x1e, p); |
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if (a=='3') pckbc_add_code(d, 0x26, p); |
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if (a=='4') pckbc_add_code(d, 0x25, p); |
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if (a=='5') pckbc_add_code(d, 0x2e, p); |
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if (a=='6') pckbc_add_code(d, 0x36, p); |
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if (a=='7') pckbc_add_code(d, 0x3d, p); |
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if (a=='8') pckbc_add_code(d, 0x3e, p); |
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if (a=='9') pckbc_add_code(d, 0x46, p); |
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if (a=='0') pckbc_add_code(d, 0x45, p); |
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if (a=='-') pckbc_add_code(d, 0x4e, p); |
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if (a=='=') pckbc_add_code(d, 0x55, p); |
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|
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if (a=='\b') pckbc_add_code(d, 0x29, p); |
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|
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if (a=='\t') pckbc_add_code(d, 0x0d, p); |
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if (a=='q') pckbc_add_code(d, 0x15, p); |
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if (a=='w') pckbc_add_code(d, 0x1d, p); |
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if (a=='e') pckbc_add_code(d, 0x24, p); |
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if (a=='r') pckbc_add_code(d, 0x2d, p); |
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if (a=='t') pckbc_add_code(d, 0x2c, p); |
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if (a=='y') pckbc_add_code(d, 0x35, p); |
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if (a=='u') pckbc_add_code(d, 0x3c, p); |
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if (a=='i') pckbc_add_code(d, 0x43, p); |
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if (a=='o') pckbc_add_code(d, 0x44, p); |
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if (a=='p') pckbc_add_code(d, 0x4d, p); |
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|
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if (a=='[') pckbc_add_code(d, 0x54, p); |
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if (a==']') pckbc_add_code(d, 0x5b, p); |
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|
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if (a=='\n' || a=='\r') pckbc_add_code(d, 0x5a, p); |
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|
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if (a=='a') pckbc_add_code(d, 0x1c, p); |
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if (a=='s') pckbc_add_code(d, 0x1b, p); |
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if (a=='d') pckbc_add_code(d, 0x23, p); |
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if (a=='f') pckbc_add_code(d, 0x2b, p); |
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if (a=='g') pckbc_add_code(d, 0x34, p); |
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if (a=='h') pckbc_add_code(d, 0x33, p); |
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if (a=='j') pckbc_add_code(d, 0x3b, p); |
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if (a=='k') pckbc_add_code(d, 0x42, p); |
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if (a=='l') pckbc_add_code(d, 0x4b, p); |
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|
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if (a==';') pckbc_add_code(d, 0x4c, p); |
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if (a=='\'') pckbc_add_code(d, 0x52, p); |
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/* if (a=='~') pckbc_add_code(d, 0x29, p); ? */ |
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if (a=='\\') pckbc_add_code(d, 0x5c, p); |
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|
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if (a=='z') pckbc_add_code(d, 0x1a, p); |
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if (a=='x') pckbc_add_code(d, 0x22, p); |
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if (a=='c') pckbc_add_code(d, 0x21, p); |
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if (a=='v') pckbc_add_code(d, 0x2a, p); |
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if (a=='b') pckbc_add_code(d, 0x32, 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, 0x3a, p); |
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|
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if (a==',') pckbc_add_code(d, 0x41, p); |
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if (a=='.') pckbc_add_code(d, 0x49, p); |
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if (a=='/') pckbc_add_code(d, 0x4a, p); |
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|
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if (a==' ') pckbc_add_code(d, 0x29, p); |
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|
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/* Add release code, if a key was pressed: */ |
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if (d->head[p] != old_head) { |
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int code = d->key_queue[p][d->head[p]]; |
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pckbc_add_code(d, 0xf0, p); |
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pckbc_add_code(d, code, p); |
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} |
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|
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/* Release shift and ctrl: */ |
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if (shift) { |
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pckbc_add_code(d, 0xf0, p); |
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pckbc_add_code(d, 0x12, p); |
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} |
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if (ctrl) { |
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pckbc_add_code(d, 0xf0, p); |
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pckbc_add_code(d, 0x11, p); |
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} |
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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 (d->translation_table == 3) { |
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ascii_to_pc_scancodes_type3(a, d); |
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return; |
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} |
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|
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if (d->translation_table != 1) { |
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fatal("[ ascii_to_pc_scancodes: unimplemented type! ]\n"); |
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return; |
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} |
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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; } |
296 |
|
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if (a=='!') { a = '1'; shift = 1; } |
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if (a=='@') { a = '2'; shift = 1; } |
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if (a=='#') { a = '3'; shift = 1; } |
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if (a=='$') { a = '4'; shift = 1; } |
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if (a=='%') { a = '5'; shift = 1; } |
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if (a=='^') { a = '6'; shift = 1; } |
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if (a=='&') { a = '7'; shift = 1; } |
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if (a=='*') { a = '8'; shift = 1; } |
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if (a=='(') { a = '9'; shift = 1; } |
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if (a==')') { a = '0'; shift = 1; } |
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if (a=='_') { a = '-'; shift = 1; } |
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if (a=='+') { a = '='; shift = 1; } |
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if (a=='{') { a = '['; shift = 1; } |
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if (a=='}') { a = ']'; shift = 1; } |
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if (a==':') { a = ';'; shift = 1; } |
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if (a=='"') { a = '\''; shift = 1; } |
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if (a=='|') { a = '\\'; shift = 1; } |
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if (a=='<') { a = ','; shift = 1; } |
315 |
if (a=='>') { a = '.'; shift = 1; } |
316 |
if (a=='?') { a = '/'; shift = 1; } |
317 |
if (a=='~') { a = '`'; shift = 1; } |
318 |
|
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if (shift) |
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pckbc_add_code(d, 0x2a, p); |
321 |
else |
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pckbc_add_code(d, 0x2a + 0x80, p); |
323 |
|
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if (ctrl) |
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pckbc_add_code(d, 0x1d, p); |
326 |
|
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/* |
328 |
* Note: The ugly hack used to add release codes for all of these |
329 |
* keys is as follows: we remember how much of the kbd buf that |
330 |
* is in use here, before we add any scancode. After we've added |
331 |
* one or more scancodes (ie an optional shift + another key) |
332 |
* then we duplicate the last scancode | 0x80 _if_ the kbd buf |
333 |
* was altered. |
334 |
*/ |
335 |
|
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old_head = d->head[p]; |
337 |
|
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if (a==27) pckbc_add_code(d, 0x01, p); |
339 |
|
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if (a=='1') pckbc_add_code(d, 0x02, p); |
341 |
if (a=='2') pckbc_add_code(d, 0x03, p); |
342 |
if (a=='3') pckbc_add_code(d, 0x04, p); |
343 |
if (a=='4') pckbc_add_code(d, 0x05, p); |
344 |
if (a=='5') pckbc_add_code(d, 0x06, p); |
345 |
if (a=='6') pckbc_add_code(d, 0x07, p); |
346 |
if (a=='7') pckbc_add_code(d, 0x08, p); |
347 |
if (a=='8') pckbc_add_code(d, 0x09, p); |
348 |
if (a=='9') pckbc_add_code(d, 0x0a, p); |
349 |
if (a=='0') pckbc_add_code(d, 0x0b, p); |
350 |
if (a=='-') pckbc_add_code(d, 0x0c, p); |
351 |
if (a=='=') pckbc_add_code(d, 0x0d, p); |
352 |
|
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if (a=='!') { pckbc_add_code(d, 0x2a, p); |
354 |
pckbc_add_code(d, 0x02, p); } |
355 |
if (a=='@') { pckbc_add_code(d, 0x2a, p); |
356 |
pckbc_add_code(d, 0x03, p); } |
357 |
if (a=='#') { pckbc_add_code(d, 0x2a, p); |
358 |
pckbc_add_code(d, 0x04, p); } |
359 |
if (a=='$') { pckbc_add_code(d, 0x2a, p); |
360 |
pckbc_add_code(d, 0x05, p); } |
361 |
if (a=='%') { pckbc_add_code(d, 0x2a, p); |
362 |
pckbc_add_code(d, 0x06, p); } |
363 |
if (a=='^') { pckbc_add_code(d, 0x2a, p); |
364 |
pckbc_add_code(d, 0x07, p); } |
365 |
if (a=='&') { pckbc_add_code(d, 0x2a, p); |
366 |
pckbc_add_code(d, 0x08, p); } |
367 |
if (a=='*') { pckbc_add_code(d, 0x2a, p); |
368 |
pckbc_add_code(d, 0x09, p); } |
369 |
if (a=='(') { pckbc_add_code(d, 0x2a, p); |
370 |
pckbc_add_code(d, 0x0a, p); } |
371 |
|
372 |
if (a=='\b') pckbc_add_code(d, 0x0e, p); |
373 |
|
374 |
if (a=='\t') pckbc_add_code(d, 0x0f, p); |
375 |
if (a=='q') pckbc_add_code(d, 0x10, p); |
376 |
if (a=='w') pckbc_add_code(d, 0x11, p); |
377 |
if (a=='e') pckbc_add_code(d, 0x12, p); |
378 |
if (a=='r') pckbc_add_code(d, 0x13, p); |
379 |
if (a=='t') pckbc_add_code(d, 0x14, p); |
380 |
if (a=='y') pckbc_add_code(d, 0x15, p); |
381 |
if (a=='u') pckbc_add_code(d, 0x16, p); |
382 |
if (a=='i') pckbc_add_code(d, 0x17, p); |
383 |
if (a=='o') pckbc_add_code(d, 0x18, p); |
384 |
if (a=='p') pckbc_add_code(d, 0x19, p); |
385 |
|
386 |
if (a=='[') pckbc_add_code(d, 0x1a, p); |
387 |
if (a==']') pckbc_add_code(d, 0x1b, p); |
388 |
|
389 |
if (a=='\n' || a=='\r') pckbc_add_code(d, 0x1c, p); |
390 |
|
391 |
if (a=='a') pckbc_add_code(d, 0x1e, p); |
392 |
if (a=='s') pckbc_add_code(d, 0x1f, p); |
393 |
if (a=='d') pckbc_add_code(d, 0x20, p); |
394 |
if (a=='f') pckbc_add_code(d, 0x21, p); |
395 |
if (a=='g') pckbc_add_code(d, 0x22, p); |
396 |
if (a=='h') pckbc_add_code(d, 0x23, p); |
397 |
if (a=='j') pckbc_add_code(d, 0x24, p); |
398 |
if (a=='k') pckbc_add_code(d, 0x25, p); |
399 |
if (a=='l') pckbc_add_code(d, 0x26, p); |
400 |
|
401 |
if (a==';') pckbc_add_code(d, 0x27, p); |
402 |
if (a=='\'') pckbc_add_code(d, 0x28, p); |
403 |
if (a=='`') pckbc_add_code(d, 0x29, p); |
404 |
if (a=='\\') pckbc_add_code(d, 0x2b, p); |
405 |
|
406 |
if (a=='z') pckbc_add_code(d, 0x2c, p); |
407 |
if (a=='x') pckbc_add_code(d, 0x2d, p); |
408 |
if (a=='c') pckbc_add_code(d, 0x2e, p); |
409 |
if (a=='v') pckbc_add_code(d, 0x2f, p); |
410 |
if (a=='b') pckbc_add_code(d, 0x30, p); |
411 |
if (a=='n') pckbc_add_code(d, 0x31, p); |
412 |
if (a=='m') pckbc_add_code(d, 0x32, p); |
413 |
|
414 |
if (a==',') pckbc_add_code(d, 0x33, p); |
415 |
if (a=='.') pckbc_add_code(d, 0x34, p); |
416 |
if (a=='/') pckbc_add_code(d, 0x35, p); |
417 |
|
418 |
if (a==' ') pckbc_add_code(d, 0x39, p); |
419 |
|
420 |
/* Add release code, if a key was pressed: */ |
421 |
if (d->head[p] != old_head) { |
422 |
int code = d->key_queue[p][d->head[p]] | 0x80; |
423 |
pckbc_add_code(d, code, p); |
424 |
} |
425 |
|
426 |
/* Release ctrl: */ |
427 |
if (ctrl) |
428 |
pckbc_add_code(d, 0x1d + 0x80, p); |
429 |
} |
430 |
|
431 |
|
432 |
/* |
433 |
* dev_pckbc_tick(): |
434 |
*/ |
435 |
void dev_pckbc_tick(struct cpu *cpu, void *extra) |
436 |
{ |
437 |
struct pckbc_data *d = extra; |
438 |
int port_nr, ch, ints_enabled; |
439 |
|
440 |
if (d->in_use && console_charavail(d->console_handle)) { |
441 |
ch = console_readchar(d->console_handle); |
442 |
if (ch >= 0) |
443 |
ascii_to_pc_scancodes(ch, d); |
444 |
} |
445 |
|
446 |
ints_enabled = d->rx_int_enable; |
447 |
|
448 |
/* TODO: mouse movements? */ |
449 |
|
450 |
if (d->cmdbyte & KC8_KDISABLE) |
451 |
ints_enabled = 0; |
452 |
|
453 |
for (port_nr=0; port_nr<2; port_nr++) { |
454 |
/* Cause receive interrupt, if there's something in the |
455 |
receive buffer: (Otherwise deassert the interrupt.) */ |
456 |
if (d->head[port_nr] != d->tail[port_nr] && ints_enabled) { |
457 |
debug("[ pckbc: interrupt port %i ]\n", port_nr); |
458 |
cpu_interrupt(cpu, port_nr==0? d->keyboard_irqnr |
459 |
: d->mouse_irqnr); |
460 |
d->currently_asserted[port_nr] = 1; |
461 |
} else { |
462 |
if (d->currently_asserted[port_nr]) |
463 |
cpu_interrupt_ack(cpu, port_nr==0? |
464 |
d->keyboard_irqnr : d->mouse_irqnr); |
465 |
d->currently_asserted[port_nr] = 0; |
466 |
} |
467 |
} |
468 |
} |
469 |
|
470 |
|
471 |
/* |
472 |
* dev_pckbc_command(): |
473 |
* |
474 |
* Handle commands to the 8048 in the emulated keyboard. |
475 |
*/ |
476 |
static void dev_pckbc_command(struct pckbc_data *d, int port_nr) |
477 |
{ |
478 |
int cmd = d->reg[PC_CMD]; |
479 |
|
480 |
if (d->type == PCKBC_8242) |
481 |
cmd = d->reg[PS2_TXBUF]; |
482 |
|
483 |
if (d->state == STATE_WAITING_FOR_TRANSLTABLE) { |
484 |
debug("[ pckbc: (port %i) switching to translation table " |
485 |
"0x%02x ]\n", port_nr, cmd); |
486 |
switch (cmd) { |
487 |
case 1: |
488 |
case 3: d->translation_table = cmd; |
489 |
break; |
490 |
default:fatal("[ pckbc: (port %i) translation table " |
491 |
"0x%02x is NOT YET IMPLEMENTED ]\n", port_nr, cmd); |
492 |
} |
493 |
pckbc_add_code(d, KBR_ACK, port_nr); |
494 |
d->state = STATE_NORMAL; |
495 |
return; |
496 |
} |
497 |
|
498 |
if (d->state == STATE_WAITING_FOR_F3) { |
499 |
debug("[ pckbc: (port %i) received '0xf3' data: " |
500 |
"0x%02x ]\n", port_nr, cmd); |
501 |
pckbc_add_code(d, KBR_ACK, port_nr); |
502 |
d->state = STATE_NORMAL; |
503 |
return; |
504 |
} |
505 |
|
506 |
if (d->state == STATE_WAITING_FOR_FC) { |
507 |
debug("[ pckbc: (port %i) received '0xfc' data: " |
508 |
"0x%02x ]\n", port_nr, cmd); |
509 |
pckbc_add_code(d, KBR_ACK, port_nr); |
510 |
d->state = STATE_NORMAL; |
511 |
return; |
512 |
} |
513 |
|
514 |
switch (cmd) { |
515 |
case 0x00: |
516 |
pckbc_add_code(d, KBR_ACK, port_nr); |
517 |
break; |
518 |
case KBC_MODEIND: /* Set LEDs */ |
519 |
/* Just ACK, no LEDs are actually set. */ |
520 |
pckbc_add_code(d, KBR_ACK, port_nr); |
521 |
break; |
522 |
case KBC_SETTABLE: |
523 |
pckbc_add_code(d, KBR_ACK, port_nr); |
524 |
d->state = STATE_WAITING_FOR_TRANSLTABLE; |
525 |
break; |
526 |
case KBC_ENABLE: |
527 |
d->keyscanning_enabled = 1; |
528 |
pckbc_add_code(d, KBR_ACK, port_nr); |
529 |
break; |
530 |
case KBC_DISABLE: |
531 |
d->keyscanning_enabled = 0; |
532 |
pckbc_add_code(d, KBR_ACK, port_nr); |
533 |
break; |
534 |
case KBC_SETDEFAULT: |
535 |
pckbc_add_code(d, KBR_ACK, port_nr); |
536 |
break; |
537 |
case 0xf3: |
538 |
pckbc_add_code(d, KBR_ACK, port_nr); |
539 |
d->state = STATE_WAITING_FOR_F3; |
540 |
break; |
541 |
case 0xfa: /* Just ack? */ |
542 |
pckbc_add_code(d, KBR_ACK, port_nr); |
543 |
break; |
544 |
case 0xfc: |
545 |
pckbc_add_code(d, KBR_ACK, port_nr); |
546 |
d->state = STATE_WAITING_FOR_FC; |
547 |
break; |
548 |
case KBC_RESET: |
549 |
pckbc_add_code(d, KBR_ACK, port_nr); |
550 |
pckbc_add_code(d, KBR_RSTDONE, port_nr); |
551 |
break; |
552 |
default: |
553 |
fatal("[ pckbc: (port %i) UNIMPLEMENTED 8048 command" |
554 |
" 0x%02x ]\n", port_nr, cmd); |
555 |
} |
556 |
} |
557 |
|
558 |
|
559 |
/* |
560 |
* dev_pckbc_access(): |
561 |
*/ |
562 |
int dev_pckbc_access(struct cpu *cpu, struct memory *mem, |
563 |
uint64_t relative_addr, unsigned char *data, size_t len, |
564 |
int writeflag, void *extra) |
565 |
{ |
566 |
uint64_t idata = 0, odata = 0; |
567 |
int i, port_nr = 0; |
568 |
struct pckbc_data *d = extra; |
569 |
|
570 |
if (writeflag == MEM_WRITE) |
571 |
idata = memory_readmax64(cpu, data, len); |
572 |
|
573 |
#ifdef PCKBC_DEBUG |
574 |
if (writeflag == MEM_WRITE) |
575 |
fatal("[ pckbc: write to addr 0x%x: 0x%x ]\n", |
576 |
(int)relative_addr, (int)idata); |
577 |
else |
578 |
fatal("[ pckbc: read from addr 0x%x ]\n", |
579 |
(int)relative_addr); |
580 |
#endif |
581 |
|
582 |
/* For JAZZ-based machines: */ |
583 |
if (relative_addr >= 0x60) { |
584 |
relative_addr -= 0x60; |
585 |
if (relative_addr != 0) |
586 |
relative_addr = 1; |
587 |
} else if (d->type == PCKBC_8242) { |
588 |
/* 8242 PS2-style: */ |
589 |
/* when using 8-byte alignment... */ |
590 |
relative_addr /= sizeof(uint64_t); |
591 |
/* port_nr = 0 for keyboard, 1 for mouse */ |
592 |
port_nr = (relative_addr >> 2); |
593 |
relative_addr &= 3; |
594 |
relative_addr += PS2; |
595 |
} else if (d->pc_style_flag) { |
596 |
/* PC-style: */ |
597 |
if (relative_addr != 0 && relative_addr != 4) { |
598 |
/* TODO (port 0x61) */ |
599 |
odata = 0x21; |
600 |
{ |
601 |
static int x = 0; |
602 |
x++; |
603 |
if (x&1) |
604 |
odata ^= 0x10; |
605 |
} |
606 |
if (writeflag == MEM_READ) |
607 |
memory_writemax64(cpu, data, len, odata); |
608 |
return 0; |
609 |
} |
610 |
if (relative_addr != 0) |
611 |
relative_addr = 1; |
612 |
} else { |
613 |
/* Others... Non-Jazz ARC-based machines etc. */ |
614 |
if (relative_addr != 0) |
615 |
relative_addr = 1; |
616 |
} |
617 |
|
618 |
switch (relative_addr) { |
619 |
|
620 |
/* |
621 |
* 8042 (PC): |
622 |
*/ |
623 |
|
624 |
case 0: /* data */ |
625 |
if (writeflag==MEM_READ) { |
626 |
switch (d->state) { |
627 |
case STATE_RDCMDBYTE: |
628 |
odata = d->cmdbyte; |
629 |
d->state = STATE_NORMAL; |
630 |
break; |
631 |
case STATE_RDOUTPUT: |
632 |
odata = d->output_byte; |
633 |
d->state = STATE_NORMAL; |
634 |
break; |
635 |
default:if (d->head[0] != d->tail[0]) { |
636 |
odata = pckbc_get_code(d, 0); |
637 |
d->last_scancode = odata; |
638 |
} else { |
639 |
odata = d->last_scancode; |
640 |
d->last_scancode |= 0x80; |
641 |
} |
642 |
} |
643 |
/* debug("[ pckbc: read from DATA: 0x%02x ]\n", |
644 |
odata); */ |
645 |
} else { |
646 |
debug("[ pckbc: write to DATA:"); |
647 |
for (i=0; i<len; i++) |
648 |
debug(" %02x", data[i]); |
649 |
debug(" ]\n"); |
650 |
|
651 |
switch (d->state) { |
652 |
case STATE_LDCMDBYTE: |
653 |
d->cmdbyte = idata; |
654 |
d->rx_int_enable = d->cmdbyte & |
655 |
(KC8_KENABLE | KC8_MENABLE) ? 1 : 0; |
656 |
d->state = STATE_NORMAL; |
657 |
break; |
658 |
case STATE_LDOUTPUT: |
659 |
d->output_byte = idata; |
660 |
d->state = STATE_NORMAL; |
661 |
break; |
662 |
default:d->reg[relative_addr] = idata; |
663 |
dev_pckbc_command(d, port_nr); |
664 |
} |
665 |
} |
666 |
break; |
667 |
case 1: /* control */ |
668 |
if (writeflag==MEM_READ) { |
669 |
dev_pckbc_tick(cpu, d); |
670 |
|
671 |
odata = 0; |
672 |
|
673 |
/* "Data in buffer" bit */ |
674 |
if (d->head[0] != d->tail[0] || |
675 |
d->state == STATE_RDCMDBYTE || |
676 |
d->state == STATE_RDOUTPUT) |
677 |
odata |= KBS_DIB; |
678 |
|
679 |
if (d->state == STATE_RDCMDBYTE) |
680 |
odata |= KBS_OCMD; |
681 |
|
682 |
odata |= KBS_NOSEC; |
683 |
/* debug("[ pckbc: read from CTL status port: " |
684 |
"0x%02x ]\n", (int)odata); */ |
685 |
} else { |
686 |
debug("[ pckbc: write to CTL:"); |
687 |
for (i=0; i<len; i++) |
688 |
debug(" %02x", data[i]); |
689 |
debug(" ]\n"); |
690 |
d->reg[relative_addr] = idata; |
691 |
|
692 |
switch (idata) { |
693 |
case K_RDCMDBYTE: |
694 |
d->state = STATE_RDCMDBYTE; |
695 |
break; |
696 |
case K_LDCMDBYTE: |
697 |
d->state = STATE_LDCMDBYTE; |
698 |
break; |
699 |
case 0xa7: |
700 |
d->cmdbyte |= KC8_MDISABLE; |
701 |
break; |
702 |
case 0xa8: |
703 |
d->cmdbyte &= ~KC8_MDISABLE; |
704 |
break; |
705 |
case 0xa9: /* test auxiliary port */ |
706 |
debug("[ pckbc: CONTROL 0xa9, TODO ]\n"); |
707 |
break; |
708 |
case 0xaa: /* keyboard self-test */ |
709 |
pckbc_add_code(d, 0x55, port_nr); |
710 |
break; |
711 |
case 0xad: |
712 |
d->cmdbyte |= KC8_KDISABLE; |
713 |
break; |
714 |
case 0xae: |
715 |
d->cmdbyte &= ~KC8_KDISABLE; |
716 |
break; |
717 |
case 0xd0: |
718 |
d->state = STATE_RDOUTPUT; |
719 |
break; |
720 |
case 0xd1: |
721 |
d->state = STATE_LDOUTPUT; |
722 |
break; |
723 |
case 0xd4: /* write to auxiliary port */ |
724 |
debug("[ pckbc: CONTROL 0xd4, TODO ]\n"); |
725 |
break; |
726 |
default: |
727 |
fatal("[ pckbc: unknown CONTROL 0x%x ]\n", |
728 |
idata); |
729 |
d->state = STATE_NORMAL; |
730 |
} |
731 |
} |
732 |
break; |
733 |
|
734 |
/* |
735 |
* 8242 (PS2): |
736 |
*/ |
737 |
|
738 |
case PS2 + PS2_TXBUF: |
739 |
if (writeflag==MEM_READ) { |
740 |
odata = random() & 0xff; |
741 |
debug("[ pckbc: read from port %i, PS2_TXBUF: " |
742 |
"0x%x ]\n", port_nr, (int)odata); |
743 |
} else { |
744 |
debug("[ pckbc: write to port %i, PS2_TXBUF: " |
745 |
"0x%llx ]\n", port_nr, (long long)idata); |
746 |
|
747 |
/* Handle keyboard commands: */ |
748 |
d->reg[PS2_TXBUF] = idata; |
749 |
dev_pckbc_command(d, port_nr); |
750 |
} |
751 |
break; |
752 |
|
753 |
case PS2 + PS2_RXBUF: |
754 |
if (writeflag==MEM_READ) { |
755 |
/* TODO: What should be returned if no data |
756 |
is available? */ |
757 |
odata = random() & 0xff; |
758 |
if (d->head[port_nr] != d->tail[port_nr]) |
759 |
odata = pckbc_get_code(d, port_nr); |
760 |
debug("[ pckbc: read from port %i, PS2_RXBUF: " |
761 |
"0x%02x ]\n", port_nr, (int)odata); |
762 |
} else { |
763 |
debug("[ pckbc: write to port %i, PS2_RXBUF: " |
764 |
"0x%llx ]\n", port_nr, (long long)idata); |
765 |
} |
766 |
break; |
767 |
|
768 |
case PS2 + PS2_CONTROL: |
769 |
if (writeflag==MEM_READ) { |
770 |
debug("[ pckbc: read from port %i, PS2_CONTROL" |
771 |
" ]\n", port_nr); |
772 |
} else { |
773 |
debug("[ pckbc: write to port %i, PS2_CONTROL:" |
774 |
" 0x%llx ]\n", port_nr, (long long)idata); |
775 |
d->clocksignal = (idata & 0x10) ? 1 : 0; |
776 |
d->rx_int_enable = (idata & 0x08) ? 1 : 0; |
777 |
d->tx_int_enable = (idata & 0x04) ? 1 : 0; |
778 |
} |
779 |
break; |
780 |
|
781 |
case PS2 + PS2_STATUS: |
782 |
if (writeflag==MEM_READ) { |
783 |
/* 0x08 = transmit buffer empty */ |
784 |
odata = d->clocksignal + 0x08; |
785 |
|
786 |
if (d->head[port_nr] != d->tail[port_nr]) { |
787 |
/* 0x10 = receicer data available (?) */ |
788 |
odata |= 0x10; |
789 |
} |
790 |
|
791 |
debug("[ pckbc: read from port %i, PS2_STATUS: " |
792 |
"0x%llx ]\n", port_nr, (long long)odata); |
793 |
} else { |
794 |
debug("[ pckbc: write to port %i, PS2_STATUS: " |
795 |
"0x%llx ]\n", port_nr, (long long)idata); |
796 |
} |
797 |
break; |
798 |
|
799 |
default: |
800 |
if (writeflag==MEM_READ) { |
801 |
debug("[ pckbc: read from unimplemented reg %i ]\n", |
802 |
(int)relative_addr); |
803 |
odata = d->reg[relative_addr]; |
804 |
} else { |
805 |
debug("[ pckbc: write to unimplemented reg %i:", |
806 |
(int)relative_addr); |
807 |
for (i=0; i<len; i++) |
808 |
debug(" %02x", data[i]); |
809 |
debug(" ]\n"); |
810 |
d->reg[relative_addr] = idata; |
811 |
} |
812 |
} |
813 |
|
814 |
/* SGI? */ |
815 |
if (len == 8) |
816 |
odata |= (odata << 8) | (odata << 16) | (odata << 24) | |
817 |
(odata << 32) | (odata << 40) | (odata << 48) | |
818 |
(odata << 56); |
819 |
|
820 |
if (writeflag == MEM_READ) |
821 |
memory_writemax64(cpu, data, len, odata); |
822 |
|
823 |
dev_pckbc_tick(cpu, d); |
824 |
|
825 |
return 1; |
826 |
} |
827 |
|
828 |
|
829 |
/* |
830 |
* dev_pckbc_init(): |
831 |
* |
832 |
* Type should be PCKBC_8042 or PCKBC_8242. |
833 |
*/ |
834 |
int dev_pckbc_init(struct machine *machine, struct memory *mem, |
835 |
uint64_t baseaddr, int type, int keyboard_irqnr, int mouse_irqnr, |
836 |
int in_use, int pc_style_flag) |
837 |
{ |
838 |
struct pckbc_data *d; |
839 |
int len = DEV_PCKBC_LENGTH; |
840 |
|
841 |
d = malloc(sizeof(struct pckbc_data)); |
842 |
if (d == NULL) { |
843 |
fprintf(stderr, "out of memory\n"); |
844 |
exit(1); |
845 |
} |
846 |
memset(d, 0, sizeof(struct pckbc_data)); |
847 |
|
848 |
if (type == PCKBC_8242) |
849 |
len = 0x40; |
850 |
|
851 |
if (type == PCKBC_JAZZ) { |
852 |
type = PCKBC_8042; |
853 |
len = DEV_PCKBC_LENGTH + 0x60; |
854 |
} |
855 |
|
856 |
d->type = type; |
857 |
d->keyboard_irqnr = keyboard_irqnr; |
858 |
d->mouse_irqnr = mouse_irqnr; |
859 |
d->in_use = in_use; |
860 |
d->pc_style_flag = pc_style_flag; |
861 |
d->console_handle = console_start_slave_inputonly(machine, "pckbc"); |
862 |
d->translation_table = 1; |
863 |
d->rx_int_enable = 1; |
864 |
d->output_byte = 0x02; /* A20 enable on PCs */ |
865 |
|
866 |
memory_device_register(mem, "pckbc", baseaddr, |
867 |
len, dev_pckbc_access, d, MEM_DEFAULT, NULL); |
868 |
machine_add_tickfunction(machine, dev_pckbc_tick, d, PCKBC_TICKSHIFT); |
869 |
|
870 |
return d->console_handle; |
871 |
} |
872 |
|