4dd5816108
- Changed variable type of the plugin_t "type" member from enum to Bit16u. - Added support for returning device flags with the new mode PLUGIN_FLAGS in the plugin entry functions. It is currently only used for devices that can be connected to a PCI slot. - Code cleanup in core device plugins: checking type no longer necessary. - The "non-plugin" mode now also uses the "loadtype" member of plugin_t. TODO: Change PCI slot options to bx_param_enum_c and build the choices list using the new capabilities of the plugin API.
462 lines
15 KiB
C++
462 lines
15 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id$
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2004-2021 The Bochs Project
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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// Initial/additional code by Ben Lunt 'fys at fysnet dot net'
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// http://www.fysnet.net
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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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#include "busmouse.h"
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#if BX_SUPPORT_BUSMOUSE
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#define LOG_THIS theBusMouse->
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bx_busm_c *theBusMouse = NULL;
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// There is a difference between older hardware and newer hardware.
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// Set this flag to indicate older hardware. I will explain the difference
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// at each item this flag is used.
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#define LEGACY_BUSMOUSE 0
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#define BUS_MOUSE_IRQ 5
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#define IRQ_MASK ((1<<5) >> BUS_MOUSE_IRQ)
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// MS Inport Bus Mouse Adapter
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#define INP_PORT_CONTROL 0x023C
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#define INP_PORT_DATA 0x023D
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#define INP_PORT_SIGNATURE 0x023E
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#define INP_PORT_CONFIG 0x023F
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#define INP_CTRL_READ_BUTTONS 0x00
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#define INP_CTRL_READ_X 0x01
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#define INP_CTRL_READ_Y 0x02
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#define INP_CTRL_COMMAND 0x07
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#define INP_CTRL_RAISE_IRQ 0x16
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#define INP_CTRL_RESET 0x80
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#define INP_HOLD_COUNTER (1 << 5)
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#define INP_ENABLE_IRQ (1 << 0)
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// MS/Logictech Standard Bus Mouse Adapter
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#define BUSM_PORT_DATA 0x023C
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#define BUSM_PORT_SIGNATURE 0x023D
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#define BUSM_PORT_CONTROL 0x023E
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#define BUSM_PORT_CONFIG 0x023F
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#define HOLD_COUNTER (1 << 7)
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#define READ_X (0 << 6)
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#define READ_Y (1 << 6)
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#define READ_LOW (0 << 5)
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#define READ_HIGH (1 << 5)
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#define DISABLE_IRQ (1 << 4)
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#define READ_X_LOW (READ_X | READ_LOW)
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#define READ_X_HIGH (READ_X | READ_HIGH)
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#define READ_Y_LOW (READ_Y | READ_LOW)
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#define READ_Y_HIGH (READ_Y | READ_HIGH)
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PLUGIN_ENTRY_FOR_MODULE(busmouse)
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{
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if (mode == PLUGIN_INIT) {
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// Create one instance of the busmouse device object.
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theBusMouse = new bx_busm_c();
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// Register this device.
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BX_REGISTER_DEVICE_DEVMODEL(plugin, type, theBusMouse, BX_PLUGIN_BUSMOUSE);
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} else if (mode == PLUGIN_FINI) {
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delete theBusMouse;
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} else if (mode == PLUGIN_PROBE) {
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return (int)PLUGTYPE_OPTIONAL;
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}
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return 0; // Success
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}
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bx_busm_c::bx_busm_c()
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{
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put("busmouse", "BUSM");
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}
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bx_busm_c::~bx_busm_c()
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{
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SIM->get_bochs_root()->remove("busmouse");
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BX_DEBUG(("Exit"));
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}
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void bx_busm_c::init(void)
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{
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BX_DEBUG(("Init $Id$"));
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BX_BUSM_THIS type = SIM->get_param_enum(BXPN_MOUSE_TYPE)->get();
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DEV_register_irq(BUS_MOUSE_IRQ, "Bus Mouse");
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// Call our timer routine at 30hz
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BX_BUSM_THIS timer_index =
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DEV_register_timer(this, timer_handler, 33334, 1, 1, "bus mouse timer");
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for (int i=0x23C; i<=0x23F; i++) {
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DEV_register_ioread_handler(this, read_handler, i, "Bus Mouse", 1);
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DEV_register_iowrite_handler(this, write_handler, i, "Bus Mouse", 1);
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}
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DEV_register_default_mouse(this, mouse_enq_static, NULL);
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BX_BUSM_THIS mouse_delayed_dx = 0;
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BX_BUSM_THIS mouse_delayed_dy = 0;
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BX_BUSM_THIS mouse_buttons = 0;
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BX_BUSM_THIS current_x =
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BX_BUSM_THIS current_y =
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BX_BUSM_THIS current_b = 0;
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if (BX_BUSM_THIS type == BX_MOUSE_TYPE_INPORT) {
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BX_BUSM_THIS control_val = 0; // the control port value
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BX_BUSM_THIS mouse_buttons_last = 0;
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} else {
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BX_BUSM_THIS control_val = 0x1f; // the control port value
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BX_BUSM_THIS config_val = 0x0e; // the config port value
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BX_BUSM_THIS sig_val = 0; // the signature port value
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}
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BX_BUSM_THIS command_val = 0; // command byte
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BX_BUSM_THIS toggle_counter = 0; // signature byte / IRQ bit toggle
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BX_BUSM_THIS interrupts = 0; // interrupts off
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if (BX_BUSM_THIS type == BX_MOUSE_TYPE_INPORT) {
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BX_INFO(("MS Inport BusMouse initialized"));
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} else {
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BX_INFO(("Standard MS/Logitech BusMouse initialized"));
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}
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}
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void bx_busm_c::register_state(void)
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{
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bx_list_c *list = new bx_list_c(SIM->get_bochs_root(), "busmouse", "Busmouse State");
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BXRS_DEC_PARAM_FIELD(list, mouse_delayed_dx, BX_BUSM_THIS mouse_delayed_dx);
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BXRS_DEC_PARAM_FIELD(list, mouse_delayed_dy, BX_BUSM_THIS mouse_delayed_dy);
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BXRS_HEX_PARAM_FIELD(list, mouse_buttons, BX_BUSM_THIS mouse_buttons);
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BXRS_HEX_PARAM_FIELD(list, mouse_buttons_last, BX_BUSM_THIS mouse_buttons_last);
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BXRS_HEX_PARAM_FIELD(list, current_x, BX_BUSM_THIS current_x);
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BXRS_HEX_PARAM_FIELD(list, current_y, BX_BUSM_THIS current_y);
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BXRS_HEX_PARAM_FIELD(list, current_b, BX_BUSM_THIS current_b);
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BXRS_HEX_PARAM_FIELD(list, control_val, BX_BUSM_THIS control_val);
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BXRS_HEX_PARAM_FIELD(list, command_val, BX_BUSM_THIS command_val);
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BXRS_HEX_PARAM_FIELD(list, toggle_counter, BX_BUSM_THIS toggle_counter);
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BXRS_PARAM_BOOL(list, interrupts, BX_BUSM_THIS interrupts);
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BXRS_HEX_PARAM_FIELD(list, config_val, BX_BUSM_THIS config_val);
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BXRS_HEX_PARAM_FIELD(list, sig_val, BX_BUSM_THIS sig_val);
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}
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// static IO port read callback handler
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// redirects to non-static class handler to avoid virtual functions
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Bit32u bx_busm_c::read_handler(void *this_ptr, Bit32u address, unsigned io_len)
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{
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#if !BX_USE_BUSM_SMF
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bx_busm_c *class_ptr = (bx_busm_c *) this_ptr;
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return class_ptr->read(address, io_len);
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}
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Bit32u bx_busm_c::read(Bit32u address, unsigned io_len)
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{
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#else
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UNUSED(this_ptr);
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#endif // !BX_USE_BUSM_SMF
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Bit8u value = 0;
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if (BX_BUSM_THIS type == BX_MOUSE_TYPE_INPORT) {
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switch (address) {
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case INP_PORT_CONTROL:
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value = BX_BUSM_THIS control_val;
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break;
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case INP_PORT_DATA:
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switch (BX_BUSM_THIS command_val) {
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case INP_CTRL_READ_BUTTONS:
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value = BX_BUSM_THIS current_b;
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#if !LEGACY_BUSMOUSE
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value |= 0x40; // Newer Logitech mouse drivers look for bit 6 set
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#endif
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break;
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case INP_CTRL_READ_X:
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value = BX_BUSM_THIS current_x;
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break;
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case INP_CTRL_READ_Y:
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value = BX_BUSM_THIS current_y;
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break;
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case INP_CTRL_COMMAND:
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value = BX_BUSM_THIS control_val;
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break;
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default:
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BX_ERROR(("Reading data port in unsupported mode 0x%02x", BX_BUSM_THIS control_val));
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}
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break;
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case INP_PORT_SIGNATURE:
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if (!BX_BUSM_THIS toggle_counter) {
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value = 0xDE;
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} else {
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value = 0x12; // Manufacturer id ?
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}
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BX_BUSM_THIS toggle_counter ^= 1;
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break;
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case INP_PORT_CONFIG:
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BX_ERROR(("Unsupported read from port 0x%04x", address));
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break;
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}
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} else {
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switch (address) {
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case BUSM_PORT_CONTROL:
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value = BX_BUSM_THIS control_val;
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// this is to allow the driver to see which IRQ the card has "jumpered"
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// only happens if IRQ's are enabled
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BX_BUSM_THIS control_val |= 0x0F;
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if ((BX_BUSM_THIS toggle_counter > 0x3FF)
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// newer hardware only changes the bit when interrupts are on
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// older hardware changes the bit no matter if interrupts are on or not
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#if !LEGACY_BUSMOUSE
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&& BX_BUSM_THIS interrupts
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#endif
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)
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BX_BUSM_THIS control_val &= ~IRQ_MASK;
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BX_BUSM_THIS toggle_counter = (BX_BUSM_THIS toggle_counter + 1) & 0x7FF;
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break;
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case BUSM_PORT_DATA:
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switch (BX_BUSM_THIS control_val & 0x60) {
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case READ_X_LOW:
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value = BX_BUSM_THIS current_x & 0x0F;
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break;
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case READ_X_HIGH:
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value = (BX_BUSM_THIS current_x >> 4) & 0x0F;
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break;
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case READ_Y_LOW:
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value = BX_BUSM_THIS current_y & 0x0F;
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break;
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case READ_Y_HIGH:
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value = ((BX_BUSM_THIS current_b ^ 7) << 5) | ((BX_BUSM_THIS current_y >> 4) & 0x0F);
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break;
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default:
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BX_ERROR(("Reading data port in unsupported mode 0x%02x", BX_BUSM_THIS control_val));
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}
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break;
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case BUSM_PORT_CONFIG:
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value = BX_BUSM_THIS config_val;
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break;
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case BUSM_PORT_SIGNATURE:
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value = BX_BUSM_THIS sig_val;
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break;
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}
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}
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BX_DEBUG(("read from address 0x%04x, value = 0x%02x ", address, value));
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return value;
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}
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// static IO port write callback handler
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// redirects to non-static class handler to avoid virtual functions
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void bx_busm_c::write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len)
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{
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#if !BX_USE_BUSM_SMF
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bx_busm_c *class_ptr = (bx_busm_c *) this_ptr;
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class_ptr->write(address, value, io_len);
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}
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void bx_busm_c::write(Bit32u address, Bit32u value, unsigned io_len)
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{
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#else
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UNUSED(this_ptr);
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#endif // !BX_USE_BUSM_SMF
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BX_DEBUG(("write to address 0x%04x, value = 0x%02x ", address, value));
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if (BX_BUSM_THIS type == BX_MOUSE_TYPE_INPORT) {
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switch (address) {
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case INP_PORT_CONTROL:
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switch (value) {
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case INP_CTRL_RESET:
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BX_BUSM_THIS control_val = 0;
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BX_BUSM_THIS command_val = 0;
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break;
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case INP_CTRL_COMMAND:
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case INP_CTRL_READ_BUTTONS:
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case INP_CTRL_READ_X:
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case INP_CTRL_READ_Y:
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BX_BUSM_THIS command_val = value;
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break;
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case 0x87: // ???????
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BX_BUSM_THIS control_val = 0;
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BX_BUSM_THIS command_val = 0x07;
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break;
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default:
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BX_ERROR(("Unsupported command written to port 0x%04x (value = 0x%02x)", address, value));
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}
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break;
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case INP_PORT_DATA:
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DEV_pic_lower_irq(BUS_MOUSE_IRQ);
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if (value == INP_CTRL_RAISE_IRQ) {
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DEV_pic_raise_irq(BUS_MOUSE_IRQ);
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} else {
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switch (BX_BUSM_THIS command_val) {
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case INP_CTRL_COMMAND:
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BX_BUSM_THIS control_val = value;
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BX_BUSM_THIS interrupts = (value & INP_ENABLE_IRQ) > 0;
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break;
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default:
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BX_ERROR(("Unsupported write to port 0x%04x (value = 0x%02x)", address, value));
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}
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}
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break;
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case INP_PORT_SIGNATURE:
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case INP_PORT_CONFIG:
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BX_ERROR(("Unsupported write to port 0x%04x (value = 0x%02x)", address, value));
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break;
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}
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} else {
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switch (address) {
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case BUSM_PORT_CONTROL:
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BX_BUSM_THIS control_val = value | 0x0F;
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BX_BUSM_THIS interrupts = (value & DISABLE_IRQ) == 0;
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DEV_pic_lower_irq(BUS_MOUSE_IRQ);
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break;
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case BUSM_PORT_CONFIG:
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BX_BUSM_THIS config_val = value;
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break;
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case BUSM_PORT_SIGNATURE:
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BX_BUSM_THIS sig_val = value;
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break;
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case BUSM_PORT_DATA:
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BX_ERROR(("Unsupported write to port 0x%04x (value = 0x%02x)", address, value));
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break;
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}
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}
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}
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void bx_busm_c::mouse_enq_static(void *dev, int delta_x, int delta_y, int delta_z, unsigned button_state, bool absxy)
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{
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((bx_busm_c*)dev)->mouse_enq(delta_x, delta_y, delta_z, button_state);
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}
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void bx_busm_c::mouse_enq(int delta_x, int delta_y, int delta_z, unsigned button_state)
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{
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// scale down the motion
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if ((delta_x < -1) || (delta_x > 1))
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delta_x /= 2;
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if ((delta_y < -1) || (delta_y > 1))
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delta_y /= 2;
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if (delta_x > 127) delta_x =127;
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if (delta_y > 127) delta_y =127;
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if (delta_x < -128) delta_x = -128;
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if (delta_y < -128) delta_y = -128;
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BX_BUSM_THIS mouse_delayed_dx += delta_x;
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BX_BUSM_THIS mouse_delayed_dy -= delta_y;
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// change button_state MRL to LMR
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BX_BUSM_THIS mouse_buttons = (Bit8u) (((button_state & 1) << 2) |
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((button_state & 4) >> 1) | ((button_state & 2) >> 1));
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if (BX_BUSM_THIS type == BX_MOUSE_TYPE_INPORT) {
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// The InPort button status is as so
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// 00lmrLMR
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// where lower case letters are changed in state
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// where upper case letters are the state of that button
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// TODO:
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// Bochs needs to call this function one more time on a button release so that
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// bits 5:3 get cleared. However, as is, it works with the code I tested it on,
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// so no worries, so far.
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if ((BX_BUSM_THIS mouse_buttons & (1<<2)) ||
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((BX_BUSM_THIS mouse_buttons_last & (1<<2)) && !(BX_BUSM_THIS mouse_buttons & (1<<2))))
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BX_BUSM_THIS mouse_buttons |= (1<<5);
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if ((BX_BUSM_THIS mouse_buttons & (1<<1)) ||
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((BX_BUSM_THIS mouse_buttons_last & (1<<1)) && !(BX_BUSM_THIS mouse_buttons & (1<<1))))
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BX_BUSM_THIS mouse_buttons |= (1<<4);
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if ((BX_BUSM_THIS mouse_buttons & (1<<0)) ||
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((BX_BUSM_THIS mouse_buttons_last & (1<<0)) && !(BX_BUSM_THIS mouse_buttons & (1<<0))))
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BX_BUSM_THIS mouse_buttons |= (1<<3);
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BX_BUSM_THIS mouse_buttons_last = BX_BUSM_THIS mouse_buttons;
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}
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}
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void bx_busm_c::update_mouse_data()
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{
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int delta_x, delta_y;
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bool hold;
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if (BX_BUSM_THIS mouse_delayed_dx > 127) {
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delta_x = 127;
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BX_BUSM_THIS mouse_delayed_dx -= 127;
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} else if (BX_BUSM_THIS mouse_delayed_dx < -128) {
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delta_x = -128;
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BX_BUSM_THIS mouse_delayed_dx += 128;
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} else {
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delta_x = BX_BUSM_THIS mouse_delayed_dx;
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BX_BUSM_THIS mouse_delayed_dx = 0;
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}
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if (BX_BUSM_THIS mouse_delayed_dy > 127) {
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delta_y = 127;
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BX_BUSM_THIS mouse_delayed_dy -= 127;
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} else if (BX_BUSM_THIS mouse_delayed_dy < -128) {
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delta_y = -128;
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BX_BUSM_THIS mouse_delayed_dy += 128;
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} else {
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delta_y = BX_BUSM_THIS mouse_delayed_dy;
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BX_BUSM_THIS mouse_delayed_dy = 0;
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}
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if (BX_BUSM_THIS type == BX_MOUSE_TYPE_INPORT) {
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hold = (BX_BUSM_THIS control_val & INP_HOLD_COUNTER) > 0;
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} else {
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hold = (BX_BUSM_THIS control_val & HOLD_COUNTER) > 0;
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}
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if (!hold) {
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BX_BUSM_THIS current_x = (Bit8u) delta_x;
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BX_BUSM_THIS current_y = (Bit8u) delta_y;
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BX_BUSM_THIS current_b = BX_BUSM_THIS mouse_buttons;
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}
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}
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void bx_busm_c::timer_handler(void *this_ptr)
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{
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bx_busm_c *class_ptr = (bx_busm_c *) this_ptr;
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class_ptr->busm_timer();
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}
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// Called at 30hz
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void bx_busm_c::busm_timer(void)
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{
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// The controller updates the data on every interrupt
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// We just don't copy it to the current_X if the 'hold' bit is set
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BX_BUSM_THIS update_mouse_data();
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// if interrupts are on, fire the interrupt
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if (BX_BUSM_THIS interrupts) {
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DEV_pic_raise_irq(BUS_MOUSE_IRQ);
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BX_DEBUG(("Interrupt Fired..."));
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}
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}
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#endif // BX_SUPPORT_BUSMOUSE
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