1624 lines
62 KiB
C++
1624 lines
62 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id: serial.cc,v 1.83 2008-06-18 16:33:44 sshwarts Exp $
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2004 MandrakeSoft S.A.
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//
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// MandrakeSoft S.A.
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// 43, rue d'Aboukir
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// 75002 Paris - France
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// http://www.linux-mandrake.com/
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// http://www.mandrakesoft.com/
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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/////////////////////////////////////////////////////////////////////////
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// Peter Grehan (grehan@iprg.nokia.com) coded the original version of this
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// serial emulation. He implemented a single 8250, and allow terminal
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// input/output to stdout on FreeBSD.
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// The current version emulates up to 4 UART 16550A with FIFO. Terminal
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// input/output now works on some more platforms.
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// Define BX_PLUGGABLE in files that can be compiled into plugins. For
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// platforms that require a special tag on exported symbols, BX_PLUGGABLE
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// is used to know when we are exporting symbols and when we are importing.
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#define BX_PLUGGABLE
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#include "iodev.h"
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#ifndef WIN32
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netdb.h>
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#define closesocket(s) close(s)
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#else
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#ifndef FILE_FLAG_FIRST_PIPE_INSTANCE
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#define FILE_FLAG_FIRST_PIPE_INSTANCE 0
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#endif
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#endif
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#if USE_RAW_SERIAL
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#include "serial_raw.h"
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#endif // USE_RAW_SERIAL
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#define LOG_THIS theSerialDevice->
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bx_serial_c *theSerialDevice = NULL;
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int libserial_LTX_plugin_init(plugin_t *plugin, plugintype_t type, int argc, char *argv[])
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{
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theSerialDevice = new bx_serial_c();
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bx_devices.pluginSerialDevice = theSerialDevice;
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BX_REGISTER_DEVICE_DEVMODEL(plugin, type, theSerialDevice, BX_PLUGIN_SERIAL);
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return(0); // Success
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}
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void libserial_LTX_plugin_fini(void)
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{
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delete theSerialDevice;
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}
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bx_serial_c::bx_serial_c(void)
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{
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put("SER");
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settype(SERLOG);
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for (int i=0; i<BX_SERIAL_MAXDEV; i++) {
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s[i].io_mode = BX_SER_MODE_NULL;
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s[i].tty_id = -1;
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s[i].tx_timer_index = BX_NULL_TIMER_HANDLE;
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s[i].rx_timer_index = BX_NULL_TIMER_HANDLE;
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s[i].fifo_timer_index = BX_NULL_TIMER_HANDLE;
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}
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}
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bx_serial_c::~bx_serial_c(void)
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{
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char pname[20];
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bx_list_c *base;
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for (int i=0; i<BX_SERIAL_MAXDEV; i++) {
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sprintf(pname, "ports.serial.%d", i+1);
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base = (bx_list_c*) SIM->get_param(pname);
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if (SIM->get_param_bool("enabled", base)->get()) {
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switch (BX_SER_THIS s[i].io_mode) {
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case BX_SER_MODE_FILE:
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if (BX_SER_THIS s[i].output != NULL)
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fclose(BX_SER_THIS s[i].output);
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break;
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case BX_SER_MODE_TERM:
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#if defined(SERIAL_ENABLE) && !defined(WIN32)
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if (s[i].tty_id >= 0) {
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tcsetattr(s[i].tty_id, TCSAFLUSH, &s[i].term_orig);
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}
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#endif
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break;
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case BX_SER_MODE_RAW:
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#if USE_RAW_SERIAL
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delete [] BX_SER_THIS s[i].raw;
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#endif
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break;
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case BX_SER_MODE_SOCKET:
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if (BX_SER_THIS s[i].socket_id >= 0) closesocket(BX_SER_THIS s[i].socket_id);
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break;
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case BX_SER_MODE_PIPE:
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#ifdef WIN32
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if (BX_SER_THIS s[i].pipe)
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CloseHandle(BX_SER_THIS s[i].pipe);
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#endif
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break;
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}
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}
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}
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BX_DEBUG(("Exit"));
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}
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void
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bx_serial_c::init(void)
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{
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Bit16u ports[BX_SERIAL_MAXDEV] = {0x03f8, 0x02f8, 0x03e8, 0x02e8};
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char name[16], pname[20];
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bx_list_c *base;
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unsigned i;
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BX_SER_THIS detect_mouse = 0;
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BX_SER_THIS mouse_port = -1;
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BX_SER_THIS mouse_type = BX_MOUSE_TYPE_NONE;
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BX_SER_THIS mouse_internal_buffer.num_elements = 0;
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for (i=0; i<BX_MOUSE_BUFF_SIZE; i++)
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BX_SER_THIS mouse_internal_buffer.buffer[i] = 0;
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BX_SER_THIS mouse_internal_buffer.head = 0;
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BX_SER_THIS mouse_delayed_dx = 0;
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BX_SER_THIS mouse_delayed_dy = 0;
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/*
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* Put the UART registers into their RESET state
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*/
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for (i=0; i<BX_N_SERIAL_PORTS; i++) {
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sprintf(pname, "ports.serial.%d", i+1);
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base = (bx_list_c*) SIM->get_param(pname);
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if (SIM->get_param_bool("enabled", base)->get()) {
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sprintf(name, "Serial Port %d", i + 1);
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/* serial interrupt */
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BX_SER_THIS s[i].IRQ = 4 - (i & 1);
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if (i < 2) {
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DEV_register_irq(BX_SER_THIS s[i].IRQ, name);
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}
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/* internal state */
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BX_SER_THIS s[i].ls_ipending = 0;
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BX_SER_THIS s[i].ms_ipending = 0;
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BX_SER_THIS s[i].rx_ipending = 0;
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BX_SER_THIS s[i].fifo_ipending = 0;
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BX_SER_THIS s[i].ls_interrupt = 0;
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BX_SER_THIS s[i].ms_interrupt = 0;
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BX_SER_THIS s[i].rx_interrupt = 0;
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BX_SER_THIS s[i].tx_interrupt = 0;
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BX_SER_THIS s[i].fifo_interrupt = 0;
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if (BX_SER_THIS s[i].tx_timer_index == BX_NULL_TIMER_HANDLE) {
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BX_SER_THIS s[i].tx_timer_index =
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bx_pc_system.register_timer(this, tx_timer_handler, 0,
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0,0, "serial.tx"); // one-shot, inactive
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}
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if (BX_SER_THIS s[i].rx_timer_index == BX_NULL_TIMER_HANDLE) {
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BX_SER_THIS s[i].rx_timer_index =
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bx_pc_system.register_timer(this, rx_timer_handler, 0,
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0,0, "serial.rx"); // one-shot, inactive
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}
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if (BX_SER_THIS s[i].fifo_timer_index == BX_NULL_TIMER_HANDLE) {
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BX_SER_THIS s[i].fifo_timer_index =
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bx_pc_system.register_timer(this, fifo_timer_handler, 0,
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0,0, "serial.fifo"); // one-shot, inactive
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}
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BX_SER_THIS s[i].rx_pollstate = BX_SER_RXIDLE;
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/* int enable: b0000 0000 */
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BX_SER_THIS s[i].int_enable.rxdata_enable = 0;
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BX_SER_THIS s[i].int_enable.txhold_enable = 0;
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BX_SER_THIS s[i].int_enable.rxlstat_enable = 0;
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BX_SER_THIS s[i].int_enable.modstat_enable = 0;
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/* int ID: b0000 0001 */
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BX_SER_THIS s[i].int_ident.ipending = 1;
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BX_SER_THIS s[i].int_ident.int_ID = 0;
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/* FIFO control: b0000 0000 */
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BX_SER_THIS s[i].fifo_cntl.enable = 0;
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BX_SER_THIS s[i].fifo_cntl.rxtrigger = 0;
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BX_SER_THIS s[i].rx_fifo_end = 0;
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BX_SER_THIS s[i].tx_fifo_end = 0;
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/* Line Control reg: b0000 0000 */
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BX_SER_THIS s[i].line_cntl.wordlen_sel = 0;
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BX_SER_THIS s[i].line_cntl.stopbits = 0;
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BX_SER_THIS s[i].line_cntl.parity_enable = 0;
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BX_SER_THIS s[i].line_cntl.evenparity_sel = 0;
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BX_SER_THIS s[i].line_cntl.stick_parity = 0;
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BX_SER_THIS s[i].line_cntl.break_cntl = 0;
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BX_SER_THIS s[i].line_cntl.dlab = 0;
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/* Modem Control reg: b0000 0000 */
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BX_SER_THIS s[i].modem_cntl.dtr = 0;
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BX_SER_THIS s[i].modem_cntl.rts = 0;
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BX_SER_THIS s[i].modem_cntl.out1 = 0;
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BX_SER_THIS s[i].modem_cntl.out2 = 0;
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BX_SER_THIS s[i].modem_cntl.local_loopback = 0;
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/* Line Status register: b0110 0000 */
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BX_SER_THIS s[i].line_status.rxdata_ready = 0;
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BX_SER_THIS s[i].line_status.overrun_error = 0;
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BX_SER_THIS s[i].line_status.parity_error = 0;
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BX_SER_THIS s[i].line_status.framing_error = 0;
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BX_SER_THIS s[i].line_status.break_int = 0;
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BX_SER_THIS s[i].line_status.thr_empty = 1;
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BX_SER_THIS s[i].line_status.tsr_empty = 1;
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BX_SER_THIS s[i].line_status.fifo_error = 0;
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/* Modem Status register: bXXXX 0000 */
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BX_SER_THIS s[i].modem_status.delta_cts = 0;
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BX_SER_THIS s[i].modem_status.delta_dsr = 0;
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BX_SER_THIS s[i].modem_status.ri_trailedge = 0;
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BX_SER_THIS s[i].modem_status.delta_dcd = 0;
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BX_SER_THIS s[i].modem_status.cts = 0;
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BX_SER_THIS s[i].modem_status.dsr = 0;
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BX_SER_THIS s[i].modem_status.ri = 0;
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BX_SER_THIS s[i].modem_status.dcd = 0;
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BX_SER_THIS s[i].scratch = 0; /* scratch register */
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BX_SER_THIS s[i].divisor_lsb = 1; /* divisor-lsb register */
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BX_SER_THIS s[i].divisor_msb = 0; /* divisor-msb register */
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BX_SER_THIS s[i].baudrate = 115200;
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for (unsigned addr=ports[i]; addr<(unsigned)(ports[i]+8); addr++) {
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BX_DEBUG(("com%d initialize register for read/write: 0x%04x",i+1, addr));
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DEV_register_ioread_handler(this, read_handler, addr, name, 1);
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DEV_register_iowrite_handler(this, write_handler, addr, name, 1);
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}
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BX_SER_THIS s[i].io_mode = BX_SER_MODE_NULL;
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const char *mode = SIM->get_param_enum("mode", base)->get_selected();
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const char *dev = SIM->get_param_string("dev", base)->getptr();
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if (!strcmp(mode, "file")) {
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if (strlen(dev) > 0) {
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BX_SER_THIS s[i].output = fopen(dev, "wb");
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if (BX_SER_THIS s[i].output)
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BX_SER_THIS s[i].io_mode = BX_SER_MODE_FILE;
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}
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} else if (!strcmp(mode, "term")) {
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#if defined(SERIAL_ENABLE) && !defined(WIN32)
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if (strlen(dev) > 0) {
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BX_SER_THIS s[i].tty_id = open(dev, O_RDWR|O_NONBLOCK,600);
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if (BX_SER_THIS s[i].tty_id < 0) {
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BX_PANIC(("open of com%d (%s) failed", i+1, dev));
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} else {
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BX_SER_THIS s[i].io_mode = BX_SER_MODE_TERM;
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BX_DEBUG(("com%d tty_id: %d", i+1, BX_SER_THIS s[i].tty_id));
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tcgetattr(BX_SER_THIS s[i].tty_id, &BX_SER_THIS s[i].term_orig);
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memcpy(&BX_SER_THIS s[i].term_orig, &BX_SER_THIS s[i].term_new, sizeof(struct termios));
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BX_SER_THIS s[i].term_new.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
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BX_SER_THIS s[i].term_new.c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
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BX_SER_THIS s[i].term_new.c_cflag &= ~(CSIZE|PARENB);
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BX_SER_THIS s[i].term_new.c_cflag |= CS8;
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BX_SER_THIS s[i].term_new.c_oflag |= OPOST | ONLCR; // Enable NL to CR-NL translation
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#ifndef TRUE_CTLC
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// ctl-C will exit Bochs, or trap to the debugger
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BX_SER_THIS s[i].term_new.c_iflag &= ~IGNBRK;
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BX_SER_THIS s[i].term_new.c_iflag |= BRKINT;
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BX_SER_THIS s[i].term_new.c_lflag |= ISIG;
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#else
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// ctl-C will be delivered to the serial port
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BX_SER_THIS s[i].term_new.c_iflag |= IGNBRK;
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BX_SER_THIS s[i].term_new.c_iflag &= ~BRKINT;
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#endif /* !def TRUE_CTLC */
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BX_SER_THIS s[i].term_new.c_iflag = 0;
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BX_SER_THIS s[i].term_new.c_oflag = 0;
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BX_SER_THIS s[i].term_new.c_cflag = CS8|CREAD|CLOCAL;
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BX_SER_THIS s[i].term_new.c_lflag = 0;
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BX_SER_THIS s[i].term_new.c_cc[VMIN] = 1;
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BX_SER_THIS s[i].term_new.c_cc[VTIME] = 0;
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//BX_SER_THIS s[i].term_new.c_iflag |= IXOFF;
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tcsetattr(BX_SER_THIS s[i].tty_id, TCSAFLUSH, &BX_SER_THIS s[i].term_new);
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}
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}
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#else
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BX_PANIC(("serial terminal support not available"));
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#endif /* def SERIAL_ENABLE */
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} else if (!strcmp(mode, "raw")) {
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#if USE_RAW_SERIAL
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BX_SER_THIS s[i].raw = new serial_raw(dev);
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BX_SER_THIS s[i].io_mode = BX_SER_MODE_RAW;
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#else
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BX_PANIC(("raw serial support not present"));
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#endif
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} else if (!strcmp(mode, "mouse")) {
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BX_SER_THIS s[i].io_mode = BX_SER_MODE_MOUSE;
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BX_SER_THIS mouse_port = i;
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BX_SER_THIS mouse_type = SIM->get_param_enum(BXPN_MOUSE_TYPE)->get();
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} else if (!strncmp(mode, "socket", 6)) {
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BX_SER_THIS s[i].io_mode = BX_SER_MODE_SOCKET;
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struct sockaddr_in sin;
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struct hostent *hp;
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char host[BX_PATHNAME_LEN];
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int port;
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int socket;
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bx_bool server = !strcmp(mode, "socket-server");
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#if defined(WIN32)
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static bx_bool winsock_init = false;
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if (!winsock_init) {
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WORD wVersionRequested;
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WSADATA wsaData;
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int err;
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wVersionRequested = MAKEWORD(2, 0);
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err = WSAStartup(wVersionRequested, &wsaData);
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if (err != 0)
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BX_PANIC(("WSAStartup failed"));
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winsock_init = true;
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}
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#endif
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strcpy(host, dev);
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char *substr = strtok(host, ":");
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substr = strtok(NULL, ":");
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if (!substr) {
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BX_PANIC(("com%d: inet address is wrong (%s)", i+1, dev));
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}
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port = atoi(substr);
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hp = gethostbyname(host);
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if (!hp) {
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BX_PANIC(("com%d: gethostbyname failed (%s)", i+1, host));
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}
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memset ((char*) &sin, 0, sizeof (sin));
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#if BX_HAVE_SOCKADDR_IN_SIN_LEN
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sin.sin_len = sizeof sin;
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#endif
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memcpy ((char*) &(sin.sin_addr), hp->h_addr, hp->h_length);
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sin.sin_family = hp->h_addrtype;
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sin.sin_port = htons (port);
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socket = ::socket (AF_INET, SOCK_STREAM, 0);
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if (socket < 0)
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BX_PANIC(("com%d: socket() failed",i+1));
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// server mode
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if (server) {
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if (::bind (socket, (sockaddr *) &sin, sizeof (sin)) < 0 ||
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::listen (socket, SOMAXCONN) < 0) {
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closesocket(socket);
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socket = -1;
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BX_PANIC(("com%d: bind() or listen() failed (host:%s, port:%d)",i+1, host, port));
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}
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else {
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BX_INFO(("com%d: waiting for client to connect (host:%s, port:%d)",i+1, host, port));
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int client;
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if ((client = ::accept (socket, NULL, 0)) < 0)
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BX_PANIC(("com%d: accept() failed (host:%s, port:%d)",i+1, host, port));
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closesocket(socket);
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socket = client;
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}
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}
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// client mode
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else if (::connect (socket, (sockaddr *) &sin, sizeof (sin)) < 0) {
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closesocket(socket);
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socket = -1;
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BX_INFO(("com%d: connect() failed (host:%s, port:%d)",i+1, host, port));
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}
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BX_SER_THIS s[i].socket_id = socket;
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if (socket > 0)
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BX_INFO(("com%d - inet %s - socket_id: %d, ip:%s, port:%d",
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i+1, server ? "server" : "client", socket, host, port));
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} else if (!strncmp(mode, "pipe", 4)) {
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if (strlen(dev) > 0) {
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bx_bool server = !strcmp(mode, "pipe-server");
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#ifdef WIN32
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HANDLE pipe;
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BX_SER_THIS s[i].io_mode = BX_SER_MODE_PIPE;
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// server mode
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if (server) {
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pipe = CreateNamedPipe( dev,
|
|
PIPE_ACCESS_DUPLEX | FILE_FLAG_FIRST_PIPE_INSTANCE,
|
|
PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT,
|
|
1, 4096, 4096, 0, NULL);
|
|
|
|
if (pipe == INVALID_HANDLE_VALUE)
|
|
BX_PANIC(("com%d: CreateNamedPipe(%s) failed", i+1, dev));
|
|
|
|
BX_INFO(("com%d: waiting for client to connect to %s", i+1, dev));
|
|
if (!ConnectNamedPipe(pipe, NULL) && GetLastError() != ERROR_PIPE_CONNECTED)
|
|
{
|
|
CloseHandle(pipe);
|
|
pipe = INVALID_HANDLE_VALUE;
|
|
BX_PANIC(("com%d: ConnectNamedPipe(%s) failed", i+1, dev));
|
|
}
|
|
}
|
|
// client mode
|
|
else {
|
|
pipe = CreateFile( dev,
|
|
GENERIC_READ | GENERIC_WRITE,
|
|
0, NULL, OPEN_EXISTING, 0, NULL);
|
|
|
|
if (pipe == INVALID_HANDLE_VALUE)
|
|
BX_INFO(("com%d: failed to open pipe %s", i+1, dev));
|
|
}
|
|
|
|
if (pipe != INVALID_HANDLE_VALUE)
|
|
BX_SER_THIS s[i].pipe = pipe;
|
|
#else
|
|
BX_PANIC(("support for serial mode '%s' not available", mode));
|
|
#endif
|
|
}
|
|
} else if (strcmp(mode, "null")) {
|
|
BX_PANIC(("unknown serial i/o mode '%s'", mode));
|
|
}
|
|
// simulate device connected
|
|
if (BX_SER_THIS s[i].io_mode != BX_SER_MODE_RAW) {
|
|
BX_SER_THIS s[i].modem_status.cts = 1;
|
|
BX_SER_THIS s[i].modem_status.dsr = 1;
|
|
}
|
|
BX_INFO(("com%d at 0x%04x irq %d", i+1, ports[i], BX_SER_THIS s[i].IRQ));
|
|
}
|
|
}
|
|
}
|
|
|
|
void bx_serial_c::reset(unsigned type)
|
|
{
|
|
}
|
|
|
|
void bx_serial_c::register_state(void)
|
|
{
|
|
unsigned i, j;
|
|
char name[6];
|
|
bx_list_c *port;
|
|
|
|
bx_list_c *list = new bx_list_c(SIM->get_bochs_root(), "serial", "Serial Port State", 9);
|
|
for (i=0; i<BX_N_SERIAL_PORTS; i++) {
|
|
sprintf(name, "%d", i);
|
|
port = new bx_list_c(list, name, 28);
|
|
new bx_shadow_bool_c(port, "ls_interrupt", &BX_SER_THIS s[i].ls_interrupt);
|
|
new bx_shadow_bool_c(port, "ms_interrupt", &BX_SER_THIS s[i].ms_interrupt);
|
|
new bx_shadow_bool_c(port, "rx_interrupt", &BX_SER_THIS s[i].rx_interrupt);
|
|
new bx_shadow_bool_c(port, "tx_interrupt", &BX_SER_THIS s[i].tx_interrupt);
|
|
new bx_shadow_bool_c(port, "fifo_interrupt", &BX_SER_THIS s[i].fifo_interrupt);
|
|
new bx_shadow_bool_c(port, "ls_ipending", &BX_SER_THIS s[i].ls_ipending);
|
|
new bx_shadow_bool_c(port, "ms_ipending", &BX_SER_THIS s[i].ms_ipending);
|
|
new bx_shadow_bool_c(port, "rx_ipending", &BX_SER_THIS s[i].rx_ipending);
|
|
new bx_shadow_bool_c(port, "fifo_ipending", &BX_SER_THIS s[i].fifo_ipending);
|
|
new bx_shadow_num_c(port, "rx_fifo_end", &BX_SER_THIS s[i].rx_fifo_end);
|
|
new bx_shadow_num_c(port, "tx_fifo_end", &BX_SER_THIS s[i].tx_fifo_end);
|
|
new bx_shadow_num_c(port, "baudrate", &BX_SER_THIS s[i].baudrate);
|
|
new bx_shadow_num_c(port, "rx_pollstate", &BX_SER_THIS s[i].rx_pollstate);
|
|
new bx_shadow_num_c(port, "rxbuffer", &BX_SER_THIS s[i].rxbuffer, BASE_HEX);
|
|
new bx_shadow_num_c(port, "thrbuffer", &BX_SER_THIS s[i].thrbuffer, BASE_HEX);
|
|
bx_list_c *int_en = new bx_list_c(port, "int_enable", 4);
|
|
new bx_shadow_bool_c(int_en, "rxdata_enable", &BX_SER_THIS s[i].int_enable.rxdata_enable);
|
|
new bx_shadow_bool_c(int_en, "txhold_enable", &BX_SER_THIS s[i].int_enable.txhold_enable);
|
|
new bx_shadow_bool_c(int_en, "rxlstat_enable", &BX_SER_THIS s[i].int_enable.rxlstat_enable);
|
|
new bx_shadow_bool_c(int_en, "modstat_enable", &BX_SER_THIS s[i].int_enable.modstat_enable);
|
|
bx_list_c *int_id = new bx_list_c(port, "int_ident", 2);
|
|
new bx_shadow_bool_c(int_id, "ipending", &BX_SER_THIS s[i].int_ident.ipending);
|
|
new bx_shadow_num_c(int_id, "int_ID", &BX_SER_THIS s[i].int_ident.int_ID, BASE_HEX);
|
|
bx_list_c *fifo = new bx_list_c(port, "fifo_cntl", 2);
|
|
new bx_shadow_bool_c(fifo, "enable", &BX_SER_THIS s[i].fifo_cntl.enable);
|
|
new bx_shadow_num_c(fifo, "rxtrigger", &BX_SER_THIS s[i].fifo_cntl.rxtrigger, BASE_HEX);
|
|
bx_list_c *lcntl = new bx_list_c(port, "line_cntl", 7);
|
|
new bx_shadow_num_c(lcntl, "wordlen_sel", &BX_SER_THIS s[i].line_cntl.wordlen_sel, BASE_HEX);
|
|
new bx_shadow_bool_c(lcntl, "stopbits", &BX_SER_THIS s[i].line_cntl.stopbits);
|
|
new bx_shadow_bool_c(lcntl, "parity_enable", &BX_SER_THIS s[i].line_cntl.parity_enable);
|
|
new bx_shadow_bool_c(lcntl, "evenparity_sel", &BX_SER_THIS s[i].line_cntl.evenparity_sel);
|
|
new bx_shadow_bool_c(lcntl, "stick_parity", &BX_SER_THIS s[i].line_cntl.stick_parity);
|
|
new bx_shadow_bool_c(lcntl, "break_cntl", &BX_SER_THIS s[i].line_cntl.break_cntl);
|
|
new bx_shadow_bool_c(lcntl, "dlab", &BX_SER_THIS s[i].line_cntl.dlab);
|
|
bx_list_c *mcntl = new bx_list_c(port, "modem_cntl", 5);
|
|
new bx_shadow_bool_c(mcntl, "dtr", &BX_SER_THIS s[i].modem_cntl.dtr);
|
|
new bx_shadow_bool_c(mcntl, "rts", &BX_SER_THIS s[i].modem_cntl.rts);
|
|
new bx_shadow_bool_c(mcntl, "out1", &BX_SER_THIS s[i].modem_cntl.out1);
|
|
new bx_shadow_bool_c(mcntl, "out2", &BX_SER_THIS s[i].modem_cntl.out2);
|
|
new bx_shadow_bool_c(mcntl, "local_loopback", &BX_SER_THIS s[i].modem_cntl.local_loopback);
|
|
bx_list_c *lstatus = new bx_list_c(port, "line_status", 8);
|
|
new bx_shadow_bool_c(lstatus, "rxdata_ready", &BX_SER_THIS s[i].line_status.rxdata_ready);
|
|
new bx_shadow_bool_c(lstatus, "overrun_error", &BX_SER_THIS s[i].line_status.overrun_error);
|
|
new bx_shadow_bool_c(lstatus, "parity_error", &BX_SER_THIS s[i].line_status.parity_error);
|
|
new bx_shadow_bool_c(lstatus, "framing_error", &BX_SER_THIS s[i].line_status.framing_error);
|
|
new bx_shadow_bool_c(lstatus, "break_int", &BX_SER_THIS s[i].line_status.break_int);
|
|
new bx_shadow_bool_c(lstatus, "thr_empty", &BX_SER_THIS s[i].line_status.thr_empty);
|
|
new bx_shadow_bool_c(lstatus, "tsr_empty", &BX_SER_THIS s[i].line_status.tsr_empty);
|
|
new bx_shadow_bool_c(lstatus, "fifo_error", &BX_SER_THIS s[i].line_status.fifo_error);
|
|
bx_list_c *mstatus = new bx_list_c(port, "modem_status", 8);
|
|
new bx_shadow_bool_c(mstatus, "delta_cts", &BX_SER_THIS s[i].modem_status.delta_cts);
|
|
new bx_shadow_bool_c(mstatus, "delta_dsr", &BX_SER_THIS s[i].modem_status.delta_dsr);
|
|
new bx_shadow_bool_c(mstatus, "ri_trailedge", &BX_SER_THIS s[i].modem_status.ri_trailedge);
|
|
new bx_shadow_bool_c(mstatus, "delta_dcd", &BX_SER_THIS s[i].modem_status.delta_dcd);
|
|
new bx_shadow_bool_c(mstatus, "cts", &BX_SER_THIS s[i].modem_status.cts);
|
|
new bx_shadow_bool_c(mstatus, "dsr", &BX_SER_THIS s[i].modem_status.dsr);
|
|
new bx_shadow_bool_c(mstatus, "ri", &BX_SER_THIS s[i].modem_status.ri);
|
|
new bx_shadow_bool_c(mstatus, "dcd", &BX_SER_THIS s[i].modem_status.dcd);
|
|
new bx_shadow_num_c(port, "scratch", &BX_SER_THIS s[i].scratch, BASE_HEX);
|
|
new bx_shadow_num_c(port, "tsrbuffer", &BX_SER_THIS s[i].tsrbuffer, BASE_HEX);
|
|
bx_list_c *rxfifo = new bx_list_c(port, "rx_fifo", 16);
|
|
for (j=0; j<16; j++) {
|
|
sprintf(name, "0x%02x", j);
|
|
new bx_shadow_num_c(rxfifo, name, &BX_SER_THIS s[i].rx_fifo[j], BASE_HEX);
|
|
}
|
|
bx_list_c *txfifo = new bx_list_c(port, "tx_fifo", 16);
|
|
for (j=0; j<16; j++) {
|
|
sprintf(name, "0x%02x", j);
|
|
new bx_shadow_num_c(txfifo, name, &BX_SER_THIS s[i].tx_fifo[j], BASE_HEX);
|
|
}
|
|
new bx_shadow_num_c(port, "divisor_lsb", &BX_SER_THIS s[i].divisor_lsb, BASE_HEX);
|
|
new bx_shadow_num_c(port, "divisor_msb", &BX_SER_THIS s[i].divisor_msb, BASE_HEX);
|
|
}
|
|
new bx_shadow_num_c(list, "detect_mouse", &BX_SER_THIS detect_mouse);
|
|
new bx_shadow_num_c(list, "mouse_delayed_dx", &BX_SER_THIS mouse_delayed_dx);
|
|
new bx_shadow_num_c(list, "mouse_delayed_dy", &BX_SER_THIS mouse_delayed_dy);
|
|
new bx_shadow_num_c(list, "mouse_delayed_dz", &BX_SER_THIS mouse_delayed_dz);
|
|
bx_list_c *mousebuf = new bx_list_c(list, "mouse_internal_buffer", 3);
|
|
new bx_shadow_num_c(mousebuf, "num_elements", &BX_SER_THIS mouse_internal_buffer.num_elements);
|
|
bx_list_c *buffer = new bx_list_c(mousebuf, "buffer", BX_MOUSE_BUFF_SIZE);
|
|
for (i=0; i<BX_MOUSE_BUFF_SIZE; i++) {
|
|
sprintf(name, "0x%02x", i);
|
|
new bx_shadow_num_c(buffer, name, &BX_SER_THIS mouse_internal_buffer.buffer[i], BASE_HEX);
|
|
}
|
|
new bx_shadow_num_c(mousebuf, "head", &BX_SER_THIS mouse_internal_buffer.head);
|
|
}
|
|
|
|
void bx_serial_c::lower_interrupt(Bit8u port)
|
|
{
|
|
/* If there are no more ints pending, clear the irq */
|
|
if ((BX_SER_THIS s[port].rx_interrupt == 0) &&
|
|
(BX_SER_THIS s[port].tx_interrupt == 0) &&
|
|
(BX_SER_THIS s[port].ls_interrupt == 0) &&
|
|
(BX_SER_THIS s[port].ms_interrupt == 0) &&
|
|
(BX_SER_THIS s[port].fifo_interrupt == 0)) {
|
|
DEV_pic_lower_irq(BX_SER_THIS s[port].IRQ);
|
|
}
|
|
}
|
|
|
|
void
|
|
bx_serial_c::raise_interrupt(Bit8u port, int type)
|
|
{
|
|
bx_bool gen_int = 0;
|
|
|
|
switch (type) {
|
|
case BX_SER_INT_IER: /* IER has changed */
|
|
gen_int = 1;
|
|
break;
|
|
case BX_SER_INT_RXDATA:
|
|
if (BX_SER_THIS s[port].int_enable.rxdata_enable) {
|
|
BX_SER_THIS s[port].rx_interrupt = 1;
|
|
gen_int = 1;
|
|
} else {
|
|
BX_SER_THIS s[port].rx_ipending = 1;
|
|
}
|
|
break;
|
|
case BX_SER_INT_TXHOLD:
|
|
if (BX_SER_THIS s[port].int_enable.txhold_enable) {
|
|
BX_SER_THIS s[port].tx_interrupt = 1;
|
|
gen_int = 1;
|
|
}
|
|
break;
|
|
case BX_SER_INT_RXLSTAT:
|
|
if (BX_SER_THIS s[port].int_enable.rxlstat_enable) {
|
|
BX_SER_THIS s[port].ls_interrupt = 1;
|
|
gen_int = 1;
|
|
} else {
|
|
BX_SER_THIS s[port].ls_ipending = 1;
|
|
}
|
|
break;
|
|
case BX_SER_INT_MODSTAT:
|
|
if ((BX_SER_THIS s[port].ms_ipending == 1) &&
|
|
(BX_SER_THIS s[port].int_enable.modstat_enable == 1)) {
|
|
BX_SER_THIS s[port].ms_interrupt = 1;
|
|
BX_SER_THIS s[port].ms_ipending = 0;
|
|
gen_int = 1;
|
|
}
|
|
break;
|
|
case BX_SER_INT_FIFO:
|
|
if (BX_SER_THIS s[port].int_enable.rxdata_enable) {
|
|
BX_SER_THIS s[port].fifo_interrupt = 1;
|
|
gen_int = 1;
|
|
} else {
|
|
BX_SER_THIS s[port].fifo_ipending = 1;
|
|
}
|
|
break;
|
|
}
|
|
if (gen_int && BX_SER_THIS s[port].modem_cntl.out2) {
|
|
DEV_pic_raise_irq(BX_SER_THIS s[port].IRQ);
|
|
}
|
|
}
|
|
|
|
// static IO port read callback handler
|
|
// redirects to non-static class handler to avoid virtual functions
|
|
|
|
Bit32u bx_serial_c::read_handler(void *this_ptr, Bit32u address, unsigned io_len)
|
|
{
|
|
#if !BX_USE_SER_SMF
|
|
bx_serial_c *class_ptr = (bx_serial_c *) this_ptr;
|
|
|
|
return class_ptr->read(address, io_len);
|
|
}
|
|
|
|
Bit32u bx_serial_c::read(Bit32u address, unsigned io_len)
|
|
{
|
|
#else
|
|
UNUSED(this_ptr);
|
|
#endif // !BX_USE_SER_SMF
|
|
bx_bool prev_cts, prev_dsr, prev_ri, prev_dcd;
|
|
Bit8u offset, val;
|
|
Bit8u port = 0;
|
|
|
|
offset = address & 0x07;
|
|
switch (address & 0x03f8) {
|
|
case 0x03f8: port = 0; break;
|
|
case 0x02f8: port = 1; break;
|
|
case 0x03e8: port = 2; break;
|
|
case 0x02e8: port = 3; break;
|
|
}
|
|
|
|
switch (offset) {
|
|
case BX_SER_RBR: /* receive buffer, or divisor latch LSB if DLAB set */
|
|
if (BX_SER_THIS s[port].line_cntl.dlab) {
|
|
val = BX_SER_THIS s[port].divisor_lsb;
|
|
} else {
|
|
if (BX_SER_THIS s[port].fifo_cntl.enable) {
|
|
val = BX_SER_THIS s[port].rx_fifo[0];
|
|
if (BX_SER_THIS s[port].rx_fifo_end > 0) {
|
|
memcpy(&BX_SER_THIS s[port].rx_fifo[0], &BX_SER_THIS s[port].rx_fifo[1], 15);
|
|
BX_SER_THIS s[port].rx_fifo_end--;
|
|
}
|
|
if (BX_SER_THIS s[port].rx_fifo_end == 0) {
|
|
BX_SER_THIS s[port].line_status.rxdata_ready = 0;
|
|
BX_SER_THIS s[port].rx_interrupt = 0;
|
|
BX_SER_THIS s[port].rx_ipending = 0;
|
|
BX_SER_THIS s[port].fifo_interrupt = 0;
|
|
BX_SER_THIS s[port].fifo_ipending = 0;
|
|
lower_interrupt(port);
|
|
}
|
|
} else {
|
|
val = BX_SER_THIS s[port].rxbuffer;
|
|
BX_SER_THIS s[port].line_status.rxdata_ready = 0;
|
|
BX_SER_THIS s[port].rx_interrupt = 0;
|
|
BX_SER_THIS s[port].rx_ipending = 0;
|
|
lower_interrupt(port);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case BX_SER_IER: /* interrupt enable register, or div. latch MSB */
|
|
if (BX_SER_THIS s[port].line_cntl.dlab) {
|
|
val = BX_SER_THIS s[port].divisor_msb;
|
|
} else {
|
|
val = BX_SER_THIS s[port].int_enable.rxdata_enable |
|
|
(BX_SER_THIS s[port].int_enable.txhold_enable << 1) |
|
|
(BX_SER_THIS s[port].int_enable.rxlstat_enable << 2) |
|
|
(BX_SER_THIS s[port].int_enable.modstat_enable << 3);
|
|
}
|
|
break;
|
|
|
|
case BX_SER_IIR: /* interrupt ID register */
|
|
/*
|
|
* Set the interrupt ID based on interrupt source
|
|
*/
|
|
if (BX_SER_THIS s[port].ls_interrupt) {
|
|
BX_SER_THIS s[port].int_ident.int_ID = 0x3;
|
|
BX_SER_THIS s[port].int_ident.ipending = 0;
|
|
} else if (BX_SER_THIS s[port].fifo_interrupt) {
|
|
BX_SER_THIS s[port].int_ident.int_ID = 0x6;
|
|
BX_SER_THIS s[port].int_ident.ipending = 0;
|
|
} else if (BX_SER_THIS s[port].rx_interrupt) {
|
|
BX_SER_THIS s[port].int_ident.int_ID = 0x2;
|
|
BX_SER_THIS s[port].int_ident.ipending = 0;
|
|
} else if (BX_SER_THIS s[port].tx_interrupt) {
|
|
BX_SER_THIS s[port].int_ident.int_ID = 0x1;
|
|
BX_SER_THIS s[port].int_ident.ipending = 0;
|
|
} else if (BX_SER_THIS s[port].ms_interrupt) {
|
|
BX_SER_THIS s[port].int_ident.int_ID = 0x0;
|
|
BX_SER_THIS s[port].int_ident.ipending = 0;
|
|
} else {
|
|
BX_SER_THIS s[port].int_ident.int_ID = 0x0;
|
|
BX_SER_THIS s[port].int_ident.ipending = 1;
|
|
}
|
|
BX_SER_THIS s[port].tx_interrupt = 0;
|
|
lower_interrupt(port);
|
|
|
|
val = BX_SER_THIS s[port].int_ident.ipending |
|
|
(BX_SER_THIS s[port].int_ident.int_ID << 1) |
|
|
(BX_SER_THIS s[port].fifo_cntl.enable ? 0xc0 : 0x00);
|
|
break;
|
|
|
|
case BX_SER_LCR: /* Line control register */
|
|
val = BX_SER_THIS s[port].line_cntl.wordlen_sel |
|
|
(BX_SER_THIS s[port].line_cntl.stopbits << 2) |
|
|
(BX_SER_THIS s[port].line_cntl.parity_enable << 3) |
|
|
(BX_SER_THIS s[port].line_cntl.evenparity_sel << 4) |
|
|
(BX_SER_THIS s[port].line_cntl.stick_parity << 5) |
|
|
(BX_SER_THIS s[port].line_cntl.break_cntl << 6) |
|
|
(BX_SER_THIS s[port].line_cntl.dlab << 7);
|
|
break;
|
|
|
|
case BX_SER_MCR: /* MODEM control register */
|
|
val = BX_SER_THIS s[port].modem_cntl.dtr |
|
|
(BX_SER_THIS s[port].modem_cntl.rts << 1) |
|
|
(BX_SER_THIS s[port].modem_cntl.out1 << 2) |
|
|
(BX_SER_THIS s[port].modem_cntl.out2 << 3) |
|
|
(BX_SER_THIS s[port].modem_cntl.local_loopback << 4);
|
|
break;
|
|
|
|
case BX_SER_LSR: /* Line status register */
|
|
val = BX_SER_THIS s[port].line_status.rxdata_ready |
|
|
(BX_SER_THIS s[port].line_status.overrun_error << 1) |
|
|
(BX_SER_THIS s[port].line_status.parity_error << 2) |
|
|
(BX_SER_THIS s[port].line_status.framing_error << 3) |
|
|
(BX_SER_THIS s[port].line_status.break_int << 4) |
|
|
(BX_SER_THIS s[port].line_status.thr_empty << 5) |
|
|
(BX_SER_THIS s[port].line_status.tsr_empty << 6) |
|
|
(BX_SER_THIS s[port].line_status.fifo_error << 7);
|
|
BX_SER_THIS s[port].line_status.overrun_error = 0;
|
|
BX_SER_THIS s[port].line_status.framing_error = 0;
|
|
BX_SER_THIS s[port].line_status.break_int = 0;
|
|
BX_SER_THIS s[port].ls_interrupt = 0;
|
|
BX_SER_THIS s[port].ls_ipending = 0;
|
|
lower_interrupt(port);
|
|
break;
|
|
|
|
case BX_SER_MSR: /* MODEM status register */
|
|
prev_cts = BX_SER_THIS s[port].modem_status.cts;
|
|
prev_dsr = BX_SER_THIS s[port].modem_status.dsr;
|
|
prev_ri = BX_SER_THIS s[port].modem_status.ri;
|
|
prev_dcd = BX_SER_THIS s[port].modem_status.dcd;
|
|
if (BX_SER_THIS s[port].io_mode == BX_SER_MODE_RAW) {
|
|
#if USE_RAW_SERIAL
|
|
val = BX_SER_THIS s[port].raw->get_modem_status();
|
|
BX_SER_THIS s[port].modem_status.cts = (val & 0x10) >> 4;
|
|
BX_SER_THIS s[port].modem_status.dsr = (val & 0x20) >> 5;
|
|
BX_SER_THIS s[port].modem_status.ri = (val & 0x40) >> 6;
|
|
BX_SER_THIS s[port].modem_status.dcd = (val & 0x80) >> 7;
|
|
if (BX_SER_THIS s[port].modem_status.cts != prev_cts) {
|
|
BX_SER_THIS s[port].modem_status.delta_cts = 1;
|
|
}
|
|
if (BX_SER_THIS s[port].modem_status.dsr != prev_dsr) {
|
|
BX_SER_THIS s[port].modem_status.delta_dsr = 1;
|
|
}
|
|
if ((BX_SER_THIS s[port].modem_status.ri == 0) && (prev_ri == 1))
|
|
BX_SER_THIS s[port].modem_status.ri_trailedge = 1;
|
|
if (BX_SER_THIS s[port].modem_status.dcd != prev_dcd) {
|
|
BX_SER_THIS s[port].modem_status.delta_dcd = 1;
|
|
}
|
|
#endif
|
|
}
|
|
val = BX_SER_THIS s[port].modem_status.delta_cts |
|
|
(BX_SER_THIS s[port].modem_status.delta_dsr << 1) |
|
|
(BX_SER_THIS s[port].modem_status.ri_trailedge << 2) |
|
|
(BX_SER_THIS s[port].modem_status.delta_dcd << 3) |
|
|
(BX_SER_THIS s[port].modem_status.cts << 4) |
|
|
(BX_SER_THIS s[port].modem_status.dsr << 5) |
|
|
(BX_SER_THIS s[port].modem_status.ri << 6) |
|
|
(BX_SER_THIS s[port].modem_status.dcd << 7);
|
|
BX_SER_THIS s[port].modem_status.delta_cts = 0;
|
|
BX_SER_THIS s[port].modem_status.delta_dsr = 0;
|
|
BX_SER_THIS s[port].modem_status.ri_trailedge = 0;
|
|
BX_SER_THIS s[port].modem_status.delta_dcd = 0;
|
|
BX_SER_THIS s[port].ms_interrupt = 0;
|
|
BX_SER_THIS s[port].ms_ipending = 0;
|
|
lower_interrupt(port);
|
|
break;
|
|
|
|
case BX_SER_SCR: /* scratch register */
|
|
val = BX_SER_THIS s[port].scratch;
|
|
break;
|
|
|
|
default:
|
|
val = 0; // keep compiler happy
|
|
BX_PANIC(("unsupported io read from address=0x%04x!", address));
|
|
break;
|
|
}
|
|
|
|
BX_DEBUG(("com%d register read from address: 0x%04x = 0x%02x", port+1, address, val));
|
|
|
|
return(val);
|
|
}
|
|
|
|
|
|
// static IO port write callback handler
|
|
// redirects to non-static class handler to avoid virtual functions
|
|
|
|
void
|
|
bx_serial_c::write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len)
|
|
{
|
|
#if !BX_USE_SER_SMF
|
|
bx_serial_c *class_ptr = (bx_serial_c *) this_ptr;
|
|
|
|
class_ptr->write(address, value, io_len);
|
|
}
|
|
|
|
void
|
|
bx_serial_c::write(Bit32u address, Bit32u value, unsigned io_len)
|
|
{
|
|
#else
|
|
UNUSED(this_ptr);
|
|
#endif // !BX_USE_SER_SMF
|
|
bx_bool prev_cts, prev_dsr, prev_ri, prev_dcd;
|
|
bx_bool new_b0, new_b1, new_b2, new_b3;
|
|
bx_bool new_b4, new_b5, new_b6, new_b7;
|
|
bx_bool gen_int = 0;
|
|
Bit8u offset, new_wordlen;
|
|
#if USE_RAW_SERIAL
|
|
bx_bool mcr_changed = 0;
|
|
Bit8u p_mode;
|
|
#endif
|
|
Bit8u port = 0;
|
|
|
|
offset = address & 0x07;
|
|
switch (address & 0x03f8) {
|
|
case 0x03f8: port = 0; break;
|
|
case 0x02f8: port = 1; break;
|
|
case 0x03e8: port = 2; break;
|
|
case 0x02e8: port = 3; break;
|
|
}
|
|
|
|
BX_DEBUG(("com%d register write to address: 0x%04x = 0x%02x", port+1, address, value));
|
|
|
|
new_b0 = value & 0x01;
|
|
new_b1 = (value & 0x02) >> 1;
|
|
new_b2 = (value & 0x04) >> 2;
|
|
new_b3 = (value & 0x08) >> 3;
|
|
new_b4 = (value & 0x10) >> 4;
|
|
new_b5 = (value & 0x20) >> 5;
|
|
new_b6 = (value & 0x40) >> 6;
|
|
new_b7 = (value & 0x80) >> 7;
|
|
|
|
switch (offset) {
|
|
case BX_SER_THR: /* transmit buffer, or divisor latch LSB if DLAB set */
|
|
if (BX_SER_THIS s[port].line_cntl.dlab) {
|
|
BX_SER_THIS s[port].divisor_lsb = value;
|
|
|
|
if ((value != 0) || (BX_SER_THIS s[port].divisor_msb != 0)) {
|
|
BX_SER_THIS s[port].baudrate = (int) (BX_PC_CLOCK_XTL /
|
|
(16 * ((BX_SER_THIS s[port].divisor_msb << 8) |
|
|
BX_SER_THIS s[port].divisor_lsb)));
|
|
}
|
|
} else {
|
|
Bit8u bitmask = 0xff >> (3 - BX_SER_THIS s[port].line_cntl.wordlen_sel);
|
|
if (BX_SER_THIS s[port].line_status.thr_empty) {
|
|
if (BX_SER_THIS s[port].fifo_cntl.enable) {
|
|
BX_SER_THIS s[port].tx_fifo[BX_SER_THIS s[port].tx_fifo_end++] = value & bitmask;
|
|
} else {
|
|
BX_SER_THIS s[port].thrbuffer = value & bitmask;
|
|
}
|
|
BX_SER_THIS s[port].line_status.thr_empty = 0;
|
|
if (BX_SER_THIS s[port].line_status.tsr_empty) {
|
|
if (BX_SER_THIS s[port].fifo_cntl.enable) {
|
|
BX_SER_THIS s[port].tsrbuffer = BX_SER_THIS s[port].tx_fifo[0];
|
|
memcpy(&BX_SER_THIS s[port].tx_fifo[0], &BX_SER_THIS s[port].tx_fifo[1], 15);
|
|
BX_SER_THIS s[port].line_status.thr_empty = (--BX_SER_THIS s[port].tx_fifo_end == 0);
|
|
} else {
|
|
BX_SER_THIS s[port].tsrbuffer = BX_SER_THIS s[port].thrbuffer;
|
|
BX_SER_THIS s[port].line_status.thr_empty = 1;
|
|
}
|
|
BX_SER_THIS s[port].line_status.tsr_empty = 0;
|
|
raise_interrupt(port, BX_SER_INT_TXHOLD);
|
|
bx_pc_system.activate_timer(BX_SER_THIS s[port].tx_timer_index,
|
|
(int) (1000000.0 / BX_SER_THIS s[port].baudrate *
|
|
(BX_SER_THIS s[port].line_cntl.wordlen_sel + 5)),
|
|
0); /* not continuous */
|
|
} else {
|
|
BX_SER_THIS s[port].tx_interrupt = 0;
|
|
lower_interrupt(port);
|
|
}
|
|
} else {
|
|
if (BX_SER_THIS s[port].fifo_cntl.enable) {
|
|
if (BX_SER_THIS s[port].tx_fifo_end < 16) {
|
|
BX_SER_THIS s[port].tx_fifo[BX_SER_THIS s[port].tx_fifo_end++] = value & bitmask;
|
|
} else {
|
|
BX_ERROR(("com%d: transmit FIFO overflow", port+1));
|
|
}
|
|
} else {
|
|
BX_ERROR(("com%d: write to tx hold register when not empty", port+1));
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case BX_SER_IER: /* interrupt enable register, or div. latch MSB */
|
|
if (BX_SER_THIS s[port].line_cntl.dlab) {
|
|
BX_SER_THIS s[port].divisor_msb = value;
|
|
|
|
if ((value != 0) || (BX_SER_THIS s[port].divisor_lsb != 0)) {
|
|
BX_SER_THIS s[port].baudrate = (int) (BX_PC_CLOCK_XTL /
|
|
(16 * ((BX_SER_THIS s[port].divisor_msb << 8) |
|
|
BX_SER_THIS s[port].divisor_lsb)));
|
|
}
|
|
} else {
|
|
if (new_b3 != BX_SER_THIS s[port].int_enable.modstat_enable) {
|
|
BX_SER_THIS s[port].int_enable.modstat_enable = new_b3;
|
|
if (BX_SER_THIS s[port].int_enable.modstat_enable == 1) {
|
|
if (BX_SER_THIS s[port].ms_ipending == 1) {
|
|
BX_SER_THIS s[port].ms_interrupt = 1;
|
|
BX_SER_THIS s[port].ms_ipending = 0;
|
|
gen_int = 1;
|
|
}
|
|
} else {
|
|
if (BX_SER_THIS s[port].ms_interrupt == 1) {
|
|
BX_SER_THIS s[port].ms_interrupt = 0;
|
|
BX_SER_THIS s[port].ms_ipending = 1;
|
|
lower_interrupt(port);
|
|
}
|
|
}
|
|
}
|
|
if (new_b1 != BX_SER_THIS s[port].int_enable.txhold_enable) {
|
|
BX_SER_THIS s[port].int_enable.txhold_enable = new_b1;
|
|
if (BX_SER_THIS s[port].int_enable.txhold_enable == 1) {
|
|
BX_SER_THIS s[port].tx_interrupt = BX_SER_THIS s[port].line_status.thr_empty;
|
|
if (BX_SER_THIS s[port].tx_interrupt) gen_int = 1;
|
|
} else {
|
|
BX_SER_THIS s[port].tx_interrupt = 0;
|
|
lower_interrupt(port);
|
|
}
|
|
}
|
|
if (new_b0 != BX_SER_THIS s[port].int_enable.rxdata_enable) {
|
|
BX_SER_THIS s[port].int_enable.rxdata_enable = new_b0;
|
|
if (BX_SER_THIS s[port].int_enable.rxdata_enable == 1) {
|
|
if (BX_SER_THIS s[port].fifo_ipending == 1) {
|
|
BX_SER_THIS s[port].fifo_interrupt = 1;
|
|
BX_SER_THIS s[port].fifo_ipending = 0;
|
|
gen_int = 1;
|
|
}
|
|
if (BX_SER_THIS s[port].rx_ipending == 1) {
|
|
BX_SER_THIS s[port].rx_interrupt = 1;
|
|
BX_SER_THIS s[port].rx_ipending = 0;
|
|
gen_int = 1;
|
|
}
|
|
} else {
|
|
if (BX_SER_THIS s[port].rx_interrupt == 1) {
|
|
BX_SER_THIS s[port].rx_interrupt = 0;
|
|
BX_SER_THIS s[port].rx_ipending = 1;
|
|
lower_interrupt(port);
|
|
}
|
|
if (BX_SER_THIS s[port].fifo_interrupt == 1) {
|
|
BX_SER_THIS s[port].fifo_interrupt = 0;
|
|
BX_SER_THIS s[port].fifo_ipending = 1;
|
|
lower_interrupt(port);
|
|
}
|
|
}
|
|
}
|
|
if (new_b2 != BX_SER_THIS s[port].int_enable.rxlstat_enable) {
|
|
BX_SER_THIS s[port].int_enable.rxlstat_enable = new_b2;
|
|
if (BX_SER_THIS s[port].int_enable.rxlstat_enable == 1) {
|
|
if (BX_SER_THIS s[port].ls_ipending == 1) {
|
|
BX_SER_THIS s[port].ls_interrupt = 1;
|
|
BX_SER_THIS s[port].ls_ipending = 0;
|
|
gen_int = 1;
|
|
}
|
|
} else {
|
|
if (BX_SER_THIS s[port].ls_interrupt == 1) {
|
|
BX_SER_THIS s[port].ls_interrupt = 0;
|
|
BX_SER_THIS s[port].ls_ipending = 1;
|
|
lower_interrupt(port);
|
|
}
|
|
}
|
|
}
|
|
if (gen_int) raise_interrupt(port, BX_SER_INT_IER);
|
|
}
|
|
break;
|
|
|
|
case BX_SER_FCR: /* FIFO control register */
|
|
if (new_b0 && !BX_SER_THIS s[port].fifo_cntl.enable) {
|
|
BX_INFO(("com%d: FIFO enabled", port+1));
|
|
BX_SER_THIS s[port].rx_fifo_end = 0;
|
|
BX_SER_THIS s[port].tx_fifo_end = 0;
|
|
}
|
|
BX_SER_THIS s[port].fifo_cntl.enable = new_b0;
|
|
if (new_b1) {
|
|
BX_SER_THIS s[port].rx_fifo_end = 0;
|
|
}
|
|
if (new_b2) {
|
|
BX_SER_THIS s[port].tx_fifo_end = 0;
|
|
}
|
|
BX_SER_THIS s[port].fifo_cntl.rxtrigger = (value & 0xc0) >> 6;
|
|
break;
|
|
|
|
case BX_SER_LCR: /* Line control register */
|
|
new_wordlen = value & 0x03;
|
|
if (BX_SER_THIS s[port].io_mode == BX_SER_MODE_RAW) {
|
|
#if USE_RAW_SERIAL
|
|
if (BX_SER_THIS s[port].line_cntl.wordlen_sel != new_wordlen) {
|
|
BX_SER_THIS s[port].raw->set_data_bits(new_wordlen + 5);
|
|
}
|
|
if (new_b2 != BX_SER_THIS s[port].line_cntl.stopbits) {
|
|
BX_SER_THIS s[port].raw->set_stop_bits(new_b2 ? 2 : 1);
|
|
}
|
|
if ((new_b3 != BX_SER_THIS s[port].line_cntl.parity_enable) ||
|
|
(new_b4 != BX_SER_THIS s[port].line_cntl.evenparity_sel) ||
|
|
(new_b5 != BX_SER_THIS s[port].line_cntl.stick_parity)) {
|
|
if (new_b3 == 0) {
|
|
p_mode = P_NONE;
|
|
} else {
|
|
p_mode = ((value & 0x30) >> 4) + 1;
|
|
}
|
|
BX_SER_THIS s[port].raw->set_parity_mode(p_mode);
|
|
}
|
|
if ((new_b6 != BX_SER_THIS s[port].line_cntl.break_cntl) &&
|
|
(!BX_SER_THIS s[port].modem_cntl.local_loopback)) {
|
|
BX_SER_THIS s[port].raw->set_break(new_b6);
|
|
}
|
|
#endif // USE_RAW_SERIAL
|
|
}
|
|
BX_SER_THIS s[port].line_cntl.wordlen_sel = new_wordlen;
|
|
/* These are ignored, but set them up so they can be read back */
|
|
BX_SER_THIS s[port].line_cntl.stopbits = new_b2;
|
|
BX_SER_THIS s[port].line_cntl.parity_enable = new_b3;
|
|
BX_SER_THIS s[port].line_cntl.evenparity_sel = new_b4;
|
|
BX_SER_THIS s[port].line_cntl.stick_parity = new_b5;
|
|
BX_SER_THIS s[port].line_cntl.break_cntl = new_b6;
|
|
if (BX_SER_THIS s[port].modem_cntl.local_loopback &&
|
|
BX_SER_THIS s[port].line_cntl.break_cntl) {
|
|
BX_SER_THIS s[port].line_status.break_int = 1;
|
|
BX_SER_THIS s[port].line_status.framing_error = 1;
|
|
rx_fifo_enq(port, 0x00);
|
|
}
|
|
/* used when doing future writes */
|
|
if (!new_b7 && BX_SER_THIS s[port].line_cntl.dlab) {
|
|
// Start the receive polling process if not already started
|
|
// and there is a valid baudrate.
|
|
if (BX_SER_THIS s[port].rx_pollstate == BX_SER_RXIDLE &&
|
|
BX_SER_THIS s[port].baudrate != 0) {
|
|
BX_SER_THIS s[port].rx_pollstate = BX_SER_RXPOLL;
|
|
bx_pc_system.activate_timer(BX_SER_THIS s[port].rx_timer_index,
|
|
(int) (1000000.0 / BX_SER_THIS s[port].baudrate *
|
|
(BX_SER_THIS s[port].line_cntl.wordlen_sel + 5)),
|
|
0); /* not continuous */
|
|
}
|
|
if (BX_SER_THIS s[port].io_mode == BX_SER_MODE_RAW) {
|
|
#if USE_RAW_SERIAL
|
|
BX_SER_THIS s[port].raw->set_baudrate(BX_SER_THIS s[port].baudrate);
|
|
#endif // USE_RAW_SERIAL
|
|
}
|
|
BX_DEBUG(("com%d: baud rate set - %d", port+1, BX_SER_THIS s[port].baudrate));
|
|
}
|
|
BX_SER_THIS s[port].line_cntl.dlab = new_b7;
|
|
break;
|
|
|
|
case BX_SER_MCR: /* MODEM control register */
|
|
if ((BX_SER_THIS s[port].io_mode == BX_SER_MODE_MOUSE) &&
|
|
((BX_SER_THIS s[port].line_cntl.wordlen_sel == 2) ||
|
|
(BX_SER_THIS s[port].line_cntl.wordlen_sel == 3))) {
|
|
if (new_b0 && !new_b1) BX_SER_THIS detect_mouse = 1;
|
|
if (new_b0 && new_b1 && (BX_SER_THIS detect_mouse == 1)) BX_SER_THIS detect_mouse = 2;
|
|
}
|
|
if (BX_SER_THIS s[port].io_mode == BX_SER_MODE_RAW) {
|
|
#if USE_RAW_SERIAL
|
|
mcr_changed = (BX_SER_THIS s[port].modem_cntl.dtr != new_b0) |
|
|
(BX_SER_THIS s[port].modem_cntl.rts != new_b1);
|
|
#endif
|
|
}
|
|
BX_SER_THIS s[port].modem_cntl.dtr = new_b0;
|
|
BX_SER_THIS s[port].modem_cntl.rts = new_b1;
|
|
BX_SER_THIS s[port].modem_cntl.out1 = new_b2;
|
|
BX_SER_THIS s[port].modem_cntl.out2 = new_b3;
|
|
|
|
if (new_b4 != BX_SER_THIS s[port].modem_cntl.local_loopback) {
|
|
BX_SER_THIS s[port].modem_cntl.local_loopback = new_b4;
|
|
if (BX_SER_THIS s[port].modem_cntl.local_loopback) {
|
|
/* transition to loopback mode */
|
|
if (BX_SER_THIS s[port].io_mode == BX_SER_MODE_RAW) {
|
|
#if USE_RAW_SERIAL
|
|
if (BX_SER_THIS s[port].modem_cntl.dtr ||
|
|
BX_SER_THIS s[port].modem_cntl.rts) {
|
|
BX_SER_THIS s[port].raw->set_modem_control(0);
|
|
}
|
|
#endif
|
|
}
|
|
if (BX_SER_THIS s[port].line_cntl.break_cntl) {
|
|
if (BX_SER_THIS s[port].io_mode == BX_SER_MODE_RAW) {
|
|
#if USE_RAW_SERIAL
|
|
BX_SER_THIS s[port].raw->set_break(0);
|
|
#endif
|
|
}
|
|
BX_SER_THIS s[port].line_status.break_int = 1;
|
|
BX_SER_THIS s[port].line_status.framing_error = 1;
|
|
rx_fifo_enq(port, 0x00);
|
|
}
|
|
} else {
|
|
/* transition to normal mode */
|
|
if (BX_SER_THIS s[port].io_mode == BX_SER_MODE_RAW) {
|
|
#if USE_RAW_SERIAL
|
|
mcr_changed = 1;
|
|
if (BX_SER_THIS s[port].line_cntl.break_cntl) {
|
|
BX_SER_THIS s[port].raw->set_break(0);
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
if (BX_SER_THIS s[port].modem_cntl.local_loopback) {
|
|
prev_cts = BX_SER_THIS s[port].modem_status.cts;
|
|
prev_dsr = BX_SER_THIS s[port].modem_status.dsr;
|
|
prev_ri = BX_SER_THIS s[port].modem_status.ri;
|
|
prev_dcd = BX_SER_THIS s[port].modem_status.dcd;
|
|
BX_SER_THIS s[port].modem_status.cts = BX_SER_THIS s[port].modem_cntl.rts;
|
|
BX_SER_THIS s[port].modem_status.dsr = BX_SER_THIS s[port].modem_cntl.dtr;
|
|
BX_SER_THIS s[port].modem_status.ri = BX_SER_THIS s[port].modem_cntl.out1;
|
|
BX_SER_THIS s[port].modem_status.dcd = BX_SER_THIS s[port].modem_cntl.out2;
|
|
if (BX_SER_THIS s[port].modem_status.cts != prev_cts) {
|
|
BX_SER_THIS s[port].modem_status.delta_cts = 1;
|
|
BX_SER_THIS s[port].ms_ipending = 1;
|
|
}
|
|
if (BX_SER_THIS s[port].modem_status.dsr != prev_dsr) {
|
|
BX_SER_THIS s[port].modem_status.delta_dsr = 1;
|
|
BX_SER_THIS s[port].ms_ipending = 1;
|
|
}
|
|
if (BX_SER_THIS s[port].modem_status.ri != prev_ri)
|
|
BX_SER_THIS s[port].ms_ipending = 1;
|
|
if ((BX_SER_THIS s[port].modem_status.ri == 0) && (prev_ri == 1))
|
|
BX_SER_THIS s[port].modem_status.ri_trailedge = 1;
|
|
if (BX_SER_THIS s[port].modem_status.dcd != prev_dcd) {
|
|
BX_SER_THIS s[port].modem_status.delta_dcd = 1;
|
|
BX_SER_THIS s[port].ms_ipending = 1;
|
|
}
|
|
raise_interrupt(port, BX_SER_INT_MODSTAT);
|
|
} else {
|
|
if (BX_SER_THIS s[port].io_mode == BX_SER_MODE_MOUSE) {
|
|
if (BX_SER_THIS detect_mouse == 2) {
|
|
if ((BX_SER_THIS mouse_type == BX_MOUSE_TYPE_SERIAL) ||
|
|
(BX_SER_THIS mouse_type == BX_MOUSE_TYPE_SERIAL_MSYS)) {
|
|
BX_SER_THIS mouse_internal_buffer.head = 0;
|
|
BX_SER_THIS mouse_internal_buffer.num_elements = 1;
|
|
BX_SER_THIS mouse_internal_buffer.buffer[0] = 'M';
|
|
} else if (BX_SER_THIS mouse_type == BX_MOUSE_TYPE_SERIAL_WHEEL) {
|
|
BX_SER_THIS mouse_internal_buffer.head = 0;
|
|
BX_SER_THIS mouse_internal_buffer.num_elements = 6;
|
|
BX_SER_THIS mouse_internal_buffer.buffer[0] = 'M';
|
|
BX_SER_THIS mouse_internal_buffer.buffer[1] = 'Z';
|
|
BX_SER_THIS mouse_internal_buffer.buffer[2] = '@';
|
|
BX_SER_THIS mouse_internal_buffer.buffer[3] = '\0';
|
|
BX_SER_THIS mouse_internal_buffer.buffer[4] = '\0';
|
|
BX_SER_THIS mouse_internal_buffer.buffer[5] = '\0';
|
|
}
|
|
BX_SER_THIS detect_mouse = 0;
|
|
}
|
|
}
|
|
|
|
if (BX_SER_THIS s[port].io_mode == BX_SER_MODE_RAW) {
|
|
#if USE_RAW_SERIAL
|
|
if (mcr_changed) {
|
|
BX_SER_THIS s[port].raw->set_modem_control(value & 0x03);
|
|
}
|
|
#endif
|
|
} else {
|
|
/* simulate device connected */
|
|
BX_SER_THIS s[port].modem_status.cts = 1;
|
|
BX_SER_THIS s[port].modem_status.dsr = 1;
|
|
BX_SER_THIS s[port].modem_status.ri = 0;
|
|
BX_SER_THIS s[port].modem_status.dcd = 0;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case BX_SER_LSR: /* Line status register */
|
|
BX_ERROR(("com%d: write to line status register ignored", port+1));
|
|
break;
|
|
|
|
case BX_SER_MSR: /* MODEM status register */
|
|
BX_ERROR(("com%d: write to MODEM status register ignored", port+1));
|
|
break;
|
|
|
|
case BX_SER_SCR: /* scratch register */
|
|
BX_SER_THIS s[port].scratch = value;
|
|
break;
|
|
|
|
default:
|
|
BX_PANIC(("unsupported io write to address=0x%04x, value = 0x%02x!",
|
|
(unsigned) address, (unsigned) value));
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
bx_serial_c::rx_fifo_enq(Bit8u port, Bit8u data)
|
|
{
|
|
bx_bool gen_int = 0;
|
|
|
|
if (BX_SER_THIS s[port].fifo_cntl.enable) {
|
|
if (BX_SER_THIS s[port].rx_fifo_end == 16) {
|
|
BX_ERROR(("com%d: receive FIFO overflow", port+1));
|
|
BX_SER_THIS s[port].line_status.overrun_error = 1;
|
|
raise_interrupt(port, BX_SER_INT_RXLSTAT);
|
|
} else {
|
|
BX_SER_THIS s[port].rx_fifo[BX_SER_THIS s[port].rx_fifo_end++] = data;
|
|
switch (BX_SER_THIS s[port].fifo_cntl.rxtrigger) {
|
|
case 1:
|
|
if (BX_SER_THIS s[port].rx_fifo_end == 4) gen_int = 1;
|
|
break;
|
|
case 2:
|
|
if (BX_SER_THIS s[port].rx_fifo_end == 8) gen_int = 1;
|
|
break;
|
|
case 3:
|
|
if (BX_SER_THIS s[port].rx_fifo_end == 14) gen_int = 1;
|
|
break;
|
|
default:
|
|
gen_int = 1;
|
|
}
|
|
if (gen_int) {
|
|
bx_pc_system.deactivate_timer(BX_SER_THIS s[port].fifo_timer_index);
|
|
BX_SER_THIS s[port].line_status.rxdata_ready = 1;
|
|
raise_interrupt(port, BX_SER_INT_RXDATA);
|
|
} else {
|
|
bx_pc_system.activate_timer(BX_SER_THIS s[port].fifo_timer_index,
|
|
(int) (1000000.0 / BX_SER_THIS s[port].baudrate *
|
|
(BX_SER_THIS s[port].line_cntl.wordlen_sel + 5) * 16),
|
|
0); /* not continuous */
|
|
}
|
|
}
|
|
} else {
|
|
if (BX_SER_THIS s[port].line_status.rxdata_ready == 1) {
|
|
BX_ERROR(("com%d: overrun error", port+1));
|
|
BX_SER_THIS s[port].line_status.overrun_error = 1;
|
|
raise_interrupt(port, BX_SER_INT_RXLSTAT);
|
|
}
|
|
BX_SER_THIS s[port].rxbuffer = data;
|
|
BX_SER_THIS s[port].line_status.rxdata_ready = 1;
|
|
raise_interrupt(port, BX_SER_INT_RXDATA);
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
bx_serial_c::tx_timer_handler(void *this_ptr)
|
|
{
|
|
bx_serial_c *class_ptr = (bx_serial_c *) this_ptr;
|
|
|
|
class_ptr->tx_timer();
|
|
}
|
|
|
|
|
|
void
|
|
bx_serial_c::tx_timer(void)
|
|
{
|
|
bx_bool gen_int = 0;
|
|
Bit8u port = 0;
|
|
int timer_id;
|
|
|
|
timer_id = bx_pc_system.triggeredTimerID();
|
|
if (timer_id == BX_SER_THIS s[0].tx_timer_index) {
|
|
port = 0;
|
|
} else if (timer_id == BX_SER_THIS s[1].tx_timer_index) {
|
|
port = 1;
|
|
} else if (timer_id == BX_SER_THIS s[2].tx_timer_index) {
|
|
port = 2;
|
|
} else if (timer_id == BX_SER_THIS s[3].tx_timer_index) {
|
|
port = 3;
|
|
}
|
|
|
|
if (BX_SER_THIS s[port].modem_cntl.local_loopback) {
|
|
rx_fifo_enq(port, BX_SER_THIS s[port].tsrbuffer);
|
|
} else {
|
|
switch (BX_SER_THIS s[port].io_mode) {
|
|
case BX_SER_MODE_FILE:
|
|
fputc(BX_SER_THIS s[port].tsrbuffer, BX_SER_THIS s[port].output);
|
|
fflush(BX_SER_THIS s[port].output);
|
|
break;
|
|
case BX_SER_MODE_TERM:
|
|
#if defined(SERIAL_ENABLE)
|
|
BX_DEBUG(("com%d: write: '%c'", port+1, BX_SER_THIS s[port].tsrbuffer));
|
|
if (BX_SER_THIS s[port].tty_id >= 0) {
|
|
write(BX_SER_THIS s[port].tty_id, (bx_ptr_t) & BX_SER_THIS s[port].tsrbuffer, 1);
|
|
}
|
|
#endif
|
|
break;
|
|
case BX_SER_MODE_RAW:
|
|
#if USE_RAW_SERIAL
|
|
if (!BX_SER_THIS s[port].raw->ready_transmit())
|
|
BX_PANIC(("com%d: not ready to transmit", port+1));
|
|
BX_SER_THIS s[port].raw->transmit(BX_SER_THIS s[port].tsrbuffer);
|
|
#endif
|
|
break;
|
|
case BX_SER_MODE_MOUSE:
|
|
BX_INFO(("com%d: write to mouse ignored: 0x%02x", port+1, BX_SER_THIS s[port].tsrbuffer));
|
|
break;
|
|
case BX_SER_MODE_SOCKET:
|
|
if (BX_SER_THIS s[port].socket_id >= 0) {
|
|
#ifdef WIN32
|
|
BX_INFO(("attempting to write win32 : %c", BX_SER_THIS s[port].tsrbuffer));
|
|
::send(BX_SER_THIS s[port].socket_id,
|
|
(const char*) & BX_SER_THIS s[port].tsrbuffer, 1, 0);
|
|
#else
|
|
::write(BX_SER_THIS s[port].socket_id,
|
|
(bx_ptr_t) & BX_SER_THIS s[port].tsrbuffer, 1);
|
|
#endif
|
|
}
|
|
case BX_SER_MODE_PIPE:
|
|
#ifdef WIN32
|
|
if (BX_SER_THIS s[port].pipe) {
|
|
DWORD written;
|
|
WriteFile(BX_SER_THIS s[port].pipe, (bx_ptr_t)& BX_SER_THIS s[port].tsrbuffer, 1, &written, NULL);
|
|
}
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
|
|
BX_SER_THIS s[port].line_status.tsr_empty = 1;
|
|
if (BX_SER_THIS s[port].fifo_cntl.enable && (BX_SER_THIS s[port].tx_fifo_end > 0)) {
|
|
BX_SER_THIS s[port].tsrbuffer = BX_SER_THIS s[port].tx_fifo[0];
|
|
BX_SER_THIS s[port].line_status.tsr_empty = 0;
|
|
memcpy(&BX_SER_THIS s[port].tx_fifo[0], &BX_SER_THIS s[port].tx_fifo[1], 15);
|
|
gen_int = (--BX_SER_THIS s[port].tx_fifo_end == 0);
|
|
} else if (!BX_SER_THIS s[port].line_status.thr_empty) {
|
|
BX_SER_THIS s[port].tsrbuffer = BX_SER_THIS s[port].thrbuffer;
|
|
BX_SER_THIS s[port].line_status.tsr_empty = 0;
|
|
gen_int = 1;
|
|
}
|
|
if (!BX_SER_THIS s[port].line_status.tsr_empty) {
|
|
if (gen_int) {
|
|
BX_SER_THIS s[port].line_status.thr_empty = 1;
|
|
raise_interrupt(port, BX_SER_INT_TXHOLD);
|
|
}
|
|
bx_pc_system.activate_timer(BX_SER_THIS s[port].tx_timer_index,
|
|
(int) (1000000.0 / BX_SER_THIS s[port].baudrate *
|
|
(BX_SER_THIS s[port].line_cntl.wordlen_sel + 5)),
|
|
0); /* not continuous */
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
bx_serial_c::rx_timer_handler(void *this_ptr)
|
|
{
|
|
bx_serial_c *class_ptr = (bx_serial_c *) this_ptr;
|
|
|
|
class_ptr->rx_timer();
|
|
}
|
|
|
|
|
|
void
|
|
bx_serial_c::rx_timer(void)
|
|
{
|
|
#if BX_HAVE_SELECT && defined(SERIAL_ENABLE)
|
|
struct timeval tval;
|
|
fd_set fds;
|
|
#endif
|
|
Bit8u port = 0;
|
|
int timer_id;
|
|
bx_bool data_ready = 0;
|
|
|
|
timer_id = bx_pc_system.triggeredTimerID();
|
|
if (timer_id == BX_SER_THIS s[0].rx_timer_index) {
|
|
port = 0;
|
|
} else if (timer_id == BX_SER_THIS s[1].rx_timer_index) {
|
|
port = 1;
|
|
} else if (timer_id == BX_SER_THIS s[2].rx_timer_index) {
|
|
port = 2;
|
|
} else if (timer_id == BX_SER_THIS s[3].rx_timer_index) {
|
|
port = 3;
|
|
}
|
|
|
|
int bdrate = BX_SER_THIS s[port].baudrate / (BX_SER_THIS s[port].line_cntl.wordlen_sel + 5);
|
|
unsigned char chbuf = 0;
|
|
|
|
if (BX_SER_THIS s[port].io_mode == BX_SER_MODE_TERM) {
|
|
#if BX_HAVE_SELECT && defined(SERIAL_ENABLE)
|
|
tval.tv_sec = 0;
|
|
tval.tv_usec = 0;
|
|
|
|
// MacOS: I'm not sure what to do with this, since I don't know
|
|
// what an fd_set is or what FD_SET() or select() do. They aren't
|
|
// declared in the CodeWarrior standard library headers. I'm just
|
|
// leaving it commented out for the moment.
|
|
|
|
FD_ZERO(&fds);
|
|
if (BX_SER_THIS s[port].tty_id >= 0) FD_SET(BX_SER_THIS s[port].tty_id, &fds);
|
|
#endif
|
|
}
|
|
if ((BX_SER_THIS s[port].line_status.rxdata_ready == 0) ||
|
|
(BX_SER_THIS s[port].fifo_cntl.enable)) {
|
|
switch (BX_SER_THIS s[port].io_mode) {
|
|
case BX_SER_MODE_SOCKET:
|
|
#if defined(SERIAL_ENABLE)
|
|
if (BX_SER_THIS s[port].line_status.rxdata_ready == 0) {
|
|
tval.tv_sec = 0;
|
|
tval.tv_usec = 0;
|
|
FD_ZERO(&fds);
|
|
int socketid = BX_SER_THIS s[port].socket_id;
|
|
if (socketid >= 0) FD_SET(socketid, &fds);
|
|
if ((socketid >= 0) && (select(socketid+1, &fds, NULL, NULL, &tval) == 1)) {
|
|
#ifdef WIN32
|
|
(void) ::recv(socketid, (char*) &chbuf, 1, 0);
|
|
#else
|
|
(void) read(socketid, &chbuf, 1);
|
|
#endif
|
|
BX_INFO((" -- COM %d : read byte [%d]", port+1, chbuf));
|
|
data_ready = 1;
|
|
}
|
|
}
|
|
#endif
|
|
break;
|
|
case BX_SER_MODE_RAW:
|
|
#if USE_RAW_SERIAL
|
|
int data;
|
|
if ((data_ready = BX_SER_THIS s[port].raw->ready_receive())) {
|
|
data = BX_SER_THIS s[port].raw->receive();
|
|
if (data < 0) {
|
|
data_ready = 0;
|
|
switch (data) {
|
|
case RAW_EVENT_BREAK:
|
|
BX_SER_THIS s[port].line_status.break_int = 1;
|
|
raise_interrupt(port, BX_SER_INT_RXLSTAT);
|
|
break;
|
|
case RAW_EVENT_FRAME:
|
|
BX_SER_THIS s[port].line_status.framing_error = 1;
|
|
raise_interrupt(port, BX_SER_INT_RXLSTAT);
|
|
break;
|
|
case RAW_EVENT_OVERRUN:
|
|
BX_SER_THIS s[port].line_status.overrun_error = 1;
|
|
raise_interrupt(port, BX_SER_INT_RXLSTAT);
|
|
break;
|
|
case RAW_EVENT_PARITY:
|
|
BX_SER_THIS s[port].line_status.parity_error = 1;
|
|
raise_interrupt(port, BX_SER_INT_RXLSTAT);
|
|
break;
|
|
case RAW_EVENT_CTS_ON:
|
|
case RAW_EVENT_CTS_OFF:
|
|
case RAW_EVENT_DSR_ON:
|
|
case RAW_EVENT_DSR_OFF:
|
|
case RAW_EVENT_RING_ON:
|
|
case RAW_EVENT_RING_OFF:
|
|
case RAW_EVENT_RLSD_ON:
|
|
case RAW_EVENT_RLSD_OFF:
|
|
raise_interrupt(port, BX_SER_INT_MODSTAT);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (data_ready) {
|
|
chbuf = data;
|
|
}
|
|
#endif
|
|
break;
|
|
case BX_SER_MODE_TERM:
|
|
#if BX_HAVE_SELECT && defined(SERIAL_ENABLE)
|
|
if ((BX_SER_THIS s[port].tty_id >= 0) && (select(BX_SER_THIS s[port].tty_id + 1, &fds, NULL, NULL, &tval) == 1)) {
|
|
(void) read(BX_SER_THIS s[port].tty_id, &chbuf, 1);
|
|
BX_DEBUG(("com%d: read: '%c'", port+1, chbuf));
|
|
data_ready = 1;
|
|
}
|
|
#endif
|
|
break;
|
|
case BX_SER_MODE_MOUSE:
|
|
if (BX_SER_THIS mouse_internal_buffer.num_elements > 0) {
|
|
chbuf = BX_SER_THIS mouse_internal_buffer.buffer[BX_SER_THIS mouse_internal_buffer.head];
|
|
BX_SER_THIS mouse_internal_buffer.head = (BX_SER_THIS mouse_internal_buffer.head + 1) %
|
|
BX_MOUSE_BUFF_SIZE;
|
|
BX_SER_THIS mouse_internal_buffer.num_elements--;
|
|
data_ready = 1;
|
|
}
|
|
break;
|
|
case BX_SER_MODE_PIPE:
|
|
#ifdef WIN32
|
|
DWORD avail = 0;
|
|
if (BX_SER_THIS s[port].pipe &&
|
|
PeekNamedPipe(BX_SER_THIS s[port].pipe, NULL, 0, NULL, &avail, NULL) &&
|
|
avail > 0) {
|
|
ReadFile(BX_SER_THIS s[port].pipe, &chbuf, 1, &avail, NULL);
|
|
data_ready = 1;
|
|
}
|
|
#endif
|
|
break;
|
|
}
|
|
if (data_ready) {
|
|
if (!BX_SER_THIS s[port].modem_cntl.local_loopback) {
|
|
rx_fifo_enq(port, chbuf);
|
|
}
|
|
} else {
|
|
if (!BX_SER_THIS s[port].fifo_cntl.enable) {
|
|
bdrate = (int) (1000000.0 / 100000); // Poll frequency is 100ms
|
|
}
|
|
}
|
|
} else {
|
|
// Poll at 4x baud rate to see if the next-char can
|
|
// be read
|
|
bdrate *= 4;
|
|
}
|
|
|
|
bx_pc_system.activate_timer(BX_SER_THIS s[port].rx_timer_index,
|
|
(int) (1000000.0 / bdrate),
|
|
0); /* not continuous */
|
|
}
|
|
|
|
|
|
void
|
|
bx_serial_c::fifo_timer_handler(void *this_ptr)
|
|
{
|
|
bx_serial_c *class_ptr = (bx_serial_c *) this_ptr;
|
|
|
|
class_ptr->fifo_timer();
|
|
}
|
|
|
|
|
|
void
|
|
bx_serial_c::fifo_timer(void)
|
|
{
|
|
Bit8u port = 0;
|
|
int timer_id;
|
|
|
|
timer_id = bx_pc_system.triggeredTimerID();
|
|
if (timer_id == BX_SER_THIS s[0].fifo_timer_index) {
|
|
port = 0;
|
|
} else if (timer_id == BX_SER_THIS s[1].fifo_timer_index) {
|
|
port = 1;
|
|
} else if (timer_id == BX_SER_THIS s[2].fifo_timer_index) {
|
|
port = 2;
|
|
} else if (timer_id == BX_SER_THIS s[3].fifo_timer_index) {
|
|
port = 3;
|
|
}
|
|
BX_SER_THIS s[port].line_status.rxdata_ready = 1;
|
|
raise_interrupt(port, BX_SER_INT_FIFO);
|
|
}
|
|
|
|
|
|
void
|
|
bx_serial_c::serial_mouse_enq(int delta_x, int delta_y, int delta_z, unsigned button_state)
|
|
{
|
|
Bit8u b1, b2, b3, mouse_data[5];
|
|
int bytes, tail;
|
|
|
|
if (BX_SER_THIS mouse_port == -1) {
|
|
BX_ERROR(("mouse not connected to a serial port"));
|
|
return;
|
|
}
|
|
|
|
// if the DTR and RTS lines aren't up, the mouse doesn't have any power to send packets.
|
|
if (!BX_SER_THIS s[BX_SER_THIS mouse_port].modem_cntl.dtr || !BX_SER_THIS s[BX_SER_THIS mouse_port].modem_cntl.rts)
|
|
return;
|
|
|
|
// scale down the motion
|
|
if ((delta_x < -1) || (delta_x > 1))
|
|
delta_x /= 2;
|
|
if ((delta_y < -1) || (delta_y > 1))
|
|
delta_y /= 2;
|
|
|
|
if(delta_x>127) delta_x=127;
|
|
if(delta_y>127) delta_y=127;
|
|
if(delta_x<-128) delta_x=-128;
|
|
if(delta_y<-128) delta_y=-128;
|
|
|
|
BX_SER_THIS mouse_delayed_dx+=delta_x;
|
|
BX_SER_THIS mouse_delayed_dy-=delta_y;
|
|
BX_SER_THIS mouse_delayed_dz =delta_z;
|
|
|
|
if ((BX_SER_THIS mouse_internal_buffer.num_elements + 4) >= BX_MOUSE_BUFF_SIZE) {
|
|
return; /* buffer doesn't have the space */
|
|
}
|
|
|
|
if (BX_SER_THIS mouse_delayed_dx > 127) {
|
|
delta_x = 127;
|
|
BX_SER_THIS mouse_delayed_dx -= 127;
|
|
} else if (BX_SER_THIS mouse_delayed_dx < -128) {
|
|
delta_x = -128;
|
|
BX_SER_THIS mouse_delayed_dx += 128;
|
|
} else {
|
|
delta_x = BX_SER_THIS mouse_delayed_dx;
|
|
BX_SER_THIS mouse_delayed_dx = 0;
|
|
}
|
|
if (BX_SER_THIS mouse_delayed_dy > 127) {
|
|
delta_y = 127;
|
|
BX_SER_THIS mouse_delayed_dy -= 127;
|
|
} else if (BX_SER_THIS mouse_delayed_dy < -128) {
|
|
delta_y = -128;
|
|
BX_SER_THIS mouse_delayed_dy += 128;
|
|
} else {
|
|
delta_y = BX_SER_THIS mouse_delayed_dy;
|
|
BX_SER_THIS mouse_delayed_dy = 0;
|
|
}
|
|
|
|
|
|
if (BX_SER_THIS mouse_type != BX_MOUSE_TYPE_SERIAL_MSYS) {
|
|
b1 = (Bit8u) delta_x;
|
|
b2 = (Bit8u) delta_y;
|
|
b3 = (Bit8u) -((Bit8s) delta_z);
|
|
mouse_data[0] = 0x40 | ((b1 & 0xc0) >> 6) | ((b2 & 0xc0) >> 4);
|
|
mouse_data[0] |= ((button_state & 0x01) << 5) | ((button_state & 0x02) << 3);
|
|
mouse_data[1] = b1 & 0x3f;
|
|
mouse_data[2] = b2 & 0x3f;
|
|
mouse_data[3] = b3 & 0x0f;
|
|
mouse_data[3] |= ((button_state & 0x04) << 2);
|
|
bytes = 3;
|
|
if (BX_SER_THIS mouse_type == BX_MOUSE_TYPE_SERIAL_WHEEL) bytes = 4;
|
|
} else {
|
|
b1 = (Bit8u) (delta_x / 2);
|
|
b2 = (Bit8u) -((Bit8s) (delta_y / 2));
|
|
mouse_data[0] = 0x80 | ((~button_state & 0x01) << 2);
|
|
mouse_data[0] |= ((~button_state & 0x06) >> 1);
|
|
mouse_data[1] = b1;
|
|
mouse_data[2] = b2;
|
|
mouse_data[3] = 0;
|
|
mouse_data[4] = 0;
|
|
bytes = 5;
|
|
}
|
|
|
|
/* enqueue mouse data in multibyte internal mouse buffer */
|
|
for (int i = 0; i < bytes; i++) {
|
|
tail = (BX_SER_THIS mouse_internal_buffer.head + BX_SER_THIS mouse_internal_buffer.num_elements) %
|
|
BX_MOUSE_BUFF_SIZE;
|
|
BX_SER_THIS mouse_internal_buffer.buffer[tail] = mouse_data[i];
|
|
BX_SER_THIS mouse_internal_buffer.num_elements++;
|
|
}
|
|
}
|