1483 lines
50 KiB
C++
1483 lines
50 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id$
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2002-2012 The Bochs Project
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// PCI VGA dummy adapter Copyright (C) 2002,2003 Mike Nordell
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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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//
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/////////////////////////////////////////////////////////////////////////
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// Standard VGA emulation + Bochs VBE support + PCI VGA interface
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// NOTE from the original pcivga code:
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// This "driver" was created for the SOLE PURPOSE of getting BeOS
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// to boot. It currently does NOTHING more than presenting a generic VGA
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// device on the PCI bus. ALL gfx in/out-put is still handled by the VGA code.
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// Furthermore, almost all of the PCI registers are currently acting like RAM.
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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 "vgacore.h"
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#include "vga.h"
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#include "virt_timer.h"
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#define LOG_THIS theVga->
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// Only reference the array if the tile numbers are within the bounds
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// of the array. If out of bounds, do nothing.
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#define SET_TILE_UPDATED(xtile, ytile, value) \
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do { \
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if (((xtile) < BX_VGA_THIS s.num_x_tiles) && ((ytile) < BX_VGA_THIS s.num_y_tiles)) \
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BX_VGA_THIS s.vga_tile_updated[(xtile)+(ytile)*BX_VGA_THIS s.num_x_tiles] = value; \
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} while (0)
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// Only reference the array if the tile numbers are within the bounds
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// of the array. If out of bounds, return 0.
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#define GET_TILE_UPDATED(xtile,ytile) \
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((((xtile) < BX_VGA_THIS s.num_x_tiles) && ((ytile) < BX_VGA_THIS s.num_y_tiles))? \
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BX_VGA_THIS s.vga_tile_updated[(xtile)+(ytile)*BX_VGA_THIS s.num_x_tiles] \
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: 0)
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bx_vga_c *theVga = NULL;
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int libvga_LTX_plugin_init(plugin_t *plugin, plugintype_t type, int argc, char *argv[])
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{
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if (type == PLUGTYPE_CORE) {
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theVga = new bx_vga_c();
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bx_devices.pluginVgaDevice = theVga;
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BX_REGISTER_DEVICE_DEVMODEL(plugin, type, theVga, BX_PLUGIN_VGA);
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return 0; // Success
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} else {
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return -1;
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}
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}
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void libvga_LTX_plugin_fini(void)
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{
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delete theVga;
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}
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bx_vga_c::bx_vga_c() : bx_vgacore_c()
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{
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put("VGA");
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}
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bx_vga_c::~bx_vga_c()
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{
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BX_DEBUG(("Exit"));
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}
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void bx_vga_c::init_vga_extension(void)
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{
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unsigned addr;
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Bit16u max_xres, max_yres, max_bpp;
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Bit8u devfunc = 0x00;
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unsigned i;
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BX_VGA_THIS init_iohandlers(read_handler, write_handler);
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BX_VGA_THIS init_systemtimer(timer_handler, vga_param_handler);
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BX_VGA_THIS pci_enabled = DEV_is_pci_device("pcivga");
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// The following is for the VBE display extension
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BX_VGA_THIS vbe_present = 0;
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BX_VGA_THIS vbe.enabled = 0;
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BX_VGA_THIS vbe.dac_8bit = 0;
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BX_VGA_THIS vbe.base_address = 0x0000;
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if (!strcmp(SIM->get_param_string(BXPN_VGA_EXTENSION)->getptr(), "vbe")) {
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BX_VGA_THIS put("BXVGA");
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for (addr=VBE_DISPI_IOPORT_INDEX; addr<=VBE_DISPI_IOPORT_DATA; addr++) {
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DEV_register_ioread_handler(this, vbe_read_handler, addr, "vga video", 7);
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DEV_register_iowrite_handler(this, vbe_write_handler, addr, "vga video", 7);
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}
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if (!BX_VGA_THIS pci_enabled) {
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BX_VGA_THIS vbe.base_address = VBE_DISPI_LFB_PHYSICAL_ADDRESS;
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DEV_register_memory_handlers(theVga, mem_read_handler, mem_write_handler,
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BX_VGA_THIS vbe.base_address,
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BX_VGA_THIS vbe.base_address + VBE_DISPI_TOTAL_VIDEO_MEMORY_BYTES - 1);
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}
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if (BX_VGA_THIS s.memory == NULL)
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BX_VGA_THIS s.memory = new Bit8u[VBE_DISPI_TOTAL_VIDEO_MEMORY_BYTES];
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memset(BX_VGA_THIS s.memory, 0, VBE_DISPI_TOTAL_VIDEO_MEMORY_BYTES);
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BX_VGA_THIS s.memsize = VBE_DISPI_TOTAL_VIDEO_MEMORY_BYTES;
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BX_VGA_THIS vbe.cur_dispi=VBE_DISPI_ID0;
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BX_VGA_THIS vbe.xres=640;
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BX_VGA_THIS vbe.yres=480;
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BX_VGA_THIS vbe.bpp=8;
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BX_VGA_THIS vbe.bank=0;
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BX_VGA_THIS vbe.curindex=0;
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BX_VGA_THIS vbe.offset_x=0;
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BX_VGA_THIS vbe.offset_y=0;
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BX_VGA_THIS vbe.virtual_xres=640;
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BX_VGA_THIS vbe.virtual_yres=480;
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BX_VGA_THIS vbe.bpp_multiplier=1;
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BX_VGA_THIS vbe.virtual_start=0;
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BX_VGA_THIS vbe.lfb_enabled=0;
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BX_VGA_THIS vbe.get_capabilities=0;
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bx_gui->get_capabilities(&max_xres, &max_yres, &max_bpp);
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if (max_xres > VBE_DISPI_MAX_XRES) {
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BX_VGA_THIS vbe.max_xres=VBE_DISPI_MAX_XRES;
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} else {
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BX_VGA_THIS vbe.max_xres=max_xres;
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}
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if (max_yres > VBE_DISPI_MAX_YRES) {
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BX_VGA_THIS vbe.max_yres=VBE_DISPI_MAX_YRES;
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} else {
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BX_VGA_THIS vbe.max_yres=max_yres;
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}
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if (max_bpp > VBE_DISPI_MAX_BPP) {
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BX_VGA_THIS vbe.max_bpp=VBE_DISPI_MAX_BPP;
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} else {
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BX_VGA_THIS vbe.max_bpp=max_bpp;
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}
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BX_VGA_THIS s.max_xres = BX_VGA_THIS vbe.max_xres;
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BX_VGA_THIS s.max_yres = BX_VGA_THIS vbe.max_yres;
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BX_VGA_THIS vbe_present = 1;
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BX_VGA_THIS extension_init = 1;
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BX_INFO(("VBE Bochs Display Extension Enabled"));
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}
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#if BX_SUPPORT_PCI
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if (BX_VGA_THIS pci_enabled) {
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DEV_register_pci_handlers(this, &devfunc, "pcivga", "Experimental PCI VGA");
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for (i = 0; i < 256; i++) {
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BX_VGA_THIS pci_conf[i] = 0x0;
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}
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// readonly registers
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static const struct init_vals_t {
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unsigned addr;
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unsigned char val;
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} init_vals[] = {
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// Note that the values for vendor and device id are selected at random!
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// There might actually be "real" values for "experimental" vendor and
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// device that should be used!
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{ 0x00, 0x34 }, { 0x01, 0x12 }, // 0x1234 - experimental vendor
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{ 0x02, 0x11 }, { 0x03, 0x11 }, // 0x1111 - experimental device
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{ 0x0a, 0x00 }, // class_sub VGA controller
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{ 0x0b, 0x03 }, // class_base display
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{ 0x0e, 0x00 } // header_type_generic
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};
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for (i = 0; i < sizeof(init_vals) / sizeof(*init_vals); ++i) {
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BX_VGA_THIS pci_conf[init_vals[i].addr] = init_vals[i].val;
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}
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if (BX_VGA_THIS vbe_present) {
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BX_VGA_THIS pci_conf[0x10] = 0x08;
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BX_VGA_THIS pci_base_address[0] = 0;
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}
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BX_VGA_THIS pci_rom_address = 0;
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BX_VGA_THIS load_pci_rom(SIM->get_param_string(BXPN_VGA_ROM_PATH)->getptr());
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}
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#endif
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#if BX_DEBUGGER
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// register device for the 'info device' command (calls debug_dump())
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bx_dbg_register_debug_info("vga", this);
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#endif
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}
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void bx_vga_c::reset(unsigned type)
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{
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#if BX_SUPPORT_PCI
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if (BX_VGA_THIS pci_enabled) {
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static const struct reset_vals_t {
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unsigned addr;
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unsigned char val;
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} reset_vals[] = {
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{ 0x04, 0x03 }, { 0x05, 0x00 }, // command_io + command_mem
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{ 0x06, 0x00 }, { 0x07, 0x02 } // status_devsel_medium
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};
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for (unsigned i = 0; i < sizeof(reset_vals) / sizeof(*reset_vals); ++i) {
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BX_VGA_THIS pci_conf[reset_vals[i].addr] = reset_vals[i].val;
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}
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}
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#endif
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}
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void bx_vga_c::register_state(void)
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{
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bx_list_c *list = new bx_list_c(SIM->get_bochs_root(), "vga", "VGA Adapter State");
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bx_vgacore_c::register_state(list);
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#if BX_SUPPORT_PCI
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if (BX_VGA_THIS pci_enabled) {
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register_pci_state(list);
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}
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#endif
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// register state for Bochs VBE
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if (!strcmp(SIM->get_param_string(BXPN_VGA_EXTENSION)->getptr(), "vbe")) {
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bx_list_c *vbe = new bx_list_c(list, "vbe");
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new bx_shadow_num_c(vbe, "cur_dispi", &BX_VGA_THIS vbe.cur_dispi, BASE_HEX);
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new bx_shadow_num_c(vbe, "xres", &BX_VGA_THIS vbe.xres);
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new bx_shadow_num_c(vbe, "yres", &BX_VGA_THIS vbe.yres);
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new bx_shadow_num_c(vbe, "bpp", &BX_VGA_THIS vbe.bpp);
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new bx_shadow_num_c(vbe, "bank", &BX_VGA_THIS vbe.bank);
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new bx_shadow_bool_c(vbe, "enabled", &BX_VGA_THIS vbe.enabled);
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new bx_shadow_num_c(vbe, "curindex", &BX_VGA_THIS vbe.curindex);
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new bx_shadow_num_c(vbe, "visible_screen_size", &BX_VGA_THIS vbe.visible_screen_size);
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new bx_shadow_num_c(vbe, "offset_x", &BX_VGA_THIS vbe.offset_x);
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new bx_shadow_num_c(vbe, "offset_y", &BX_VGA_THIS vbe.offset_y);
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new bx_shadow_num_c(vbe, "virtual_xres", &BX_VGA_THIS vbe.virtual_xres);
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new bx_shadow_num_c(vbe, "virtual_yres", &BX_VGA_THIS vbe.virtual_yres);
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new bx_shadow_num_c(vbe, "virtual_start", &BX_VGA_THIS vbe.virtual_start);
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new bx_shadow_num_c(vbe, "bpp_multiplier", &BX_VGA_THIS vbe.bpp_multiplier);
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new bx_shadow_bool_c(vbe, "lfb_enabled", &BX_VGA_THIS vbe.lfb_enabled);
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new bx_shadow_bool_c(vbe, "get_capabilities", &BX_VGA_THIS vbe.get_capabilities);
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new bx_shadow_bool_c(vbe, "dac_8bit", &BX_VGA_THIS vbe.dac_8bit);
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}
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}
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void bx_vga_c::after_restore_state(void)
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{
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#if BX_SUPPORT_PCI
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if (BX_VGA_THIS pci_enabled) {
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if (BX_VGA_THIS vbe_present) {
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if (BX_VGA_THIS vbe_set_base_addr(&BX_VGA_THIS pci_base_address[0],
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&BX_VGA_THIS pci_conf[0x10])) {
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BX_INFO(("new base address: 0x%08x", BX_VGA_THIS pci_base_address[0]));
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}
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}
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if (DEV_pci_set_base_mem(this, mem_read_handler, mem_write_handler,
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&BX_VGA_THIS pci_rom_address,
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&BX_VGA_THIS pci_conf[0x30],
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BX_VGA_THIS pci_rom_size)) {
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BX_INFO(("new ROM address: 0x%08x", BX_VGA_THIS pci_rom_address));
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}
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}
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#endif
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if (BX_VGA_THIS vbe.enabled) {
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bx_gui->dimension_update(BX_VGA_THIS vbe.xres, BX_VGA_THIS vbe.yres, 0, 0,
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BX_VGA_THIS vbe.bpp);
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}
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bx_vgacore_c::after_restore_state();
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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_vga_c::write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len)
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{
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#if BX_USE_VGA_SMF == 0
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bx_vga_c *class_ptr = (bx_vga_c *) this_ptr;
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class_ptr->write(address, value, io_len, 0);
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#else
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UNUSED(this_ptr);
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theVga->write(address, value, io_len, 0);
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#endif
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}
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#if BX_USE_VGA_SMF
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void bx_vga_c::write_handler_no_log(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len)
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{
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UNUSED(this_ptr);
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theVga->write(address, value, io_len, 1);
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}
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#endif
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void bx_vga_c::write(Bit32u address, Bit32u value, unsigned io_len, bx_bool no_log)
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{
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if (io_len == 2) {
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#if BX_USE_VGA_SMF
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bx_vga_c::write_handler_no_log(0, address, value & 0xff, 1);
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bx_vga_c::write_handler_no_log(0, address+1, (value >> 8) & 0xff, 1);
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#else
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bx_vga_c::write(address, value & 0xff, 1, 1);
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bx_vga_c::write(address+1, (value >> 8) & 0xff, 1, 1);
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#endif
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return;
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}
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if ((address >= 0x03b0) && (address <= 0x03bf) &&
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(BX_VGA_THIS s.misc_output.color_emulation))
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return;
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if ((address >= 0x03d0) && (address <= 0x03df) &&
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(BX_VGA_THIS s.misc_output.color_emulation==0))
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return;
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switch (address) {
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case 0x03b5: /* CRTC Registers (monochrome emulation modes) */
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case 0x03d5: /* CRTC Registers (color emulation modes) */
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if (BX_VGA_THIS s.CRTC.address > 0x18) {
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BX_DEBUG(("write: invalid CRTC register 0x%02x ignored",
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(unsigned) BX_VGA_THIS s.CRTC.address));
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return;
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}
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if (value != BX_VGA_THIS s.CRTC.reg[BX_VGA_THIS s.CRTC.address]) {
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switch (BX_VGA_THIS s.CRTC.address) {
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case 0x13:
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case 0x14:
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case 0x17:
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if (!BX_VGA_THIS vbe.enabled || (BX_VGA_THIS vbe.bpp == VBE_DISPI_BPP_4)) {
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// Line offset change
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bx_vgacore_c::write(address, value, io_len, no_log);
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} else {
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BX_VGA_THIS s.CRTC.reg[BX_VGA_THIS s.CRTC.address] = value;
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}
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break;
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default:
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bx_vgacore_c::write(address, value, io_len, no_log);
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}
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}
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break;
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default:
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bx_vgacore_c::write(address, value, io_len, no_log);
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}
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}
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Bit64s bx_vga_c::vga_param_handler(bx_param_c *param, int set, Bit64s val)
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{
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Bit32u interval;
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// handler for runtime parameter 'vga: update_freq'
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if (set) {
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interval = (Bit32u)(1000000 / val);
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BX_INFO(("Changing timer interval to %d", interval));
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BX_VGA_THIS timer_handler(theVga);
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bx_virt_timer.activate_timer(BX_VGA_THIS timer_id, interval, 1);
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if (interval < 300000) {
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BX_VGA_THIS s.blink_counter = 300000 / (unsigned)interval;
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} else {
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BX_VGA_THIS s.blink_counter = 1;
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}
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}
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return val;
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}
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void bx_vga_c::timer_handler(void *this_ptr)
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{
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#if BX_USE_VGA_SMF == 0
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bx_vga_c *class_ptr = (bx_vga_c *) this_ptr;
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class_ptr->timer();
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}
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void bx_vga_c::timer(void)
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{
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#else
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UNUSED(this_ptr);
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#endif
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update();
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bx_gui->flush();
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}
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void bx_vga_c::update(void)
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{
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unsigned iHeight, iWidth;
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if (BX_VGA_THIS vbe.enabled) {
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/* no screen update necessary */
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if ((BX_VGA_THIS s.vga_mem_updated==0) && BX_VGA_THIS s.graphics_ctrl.graphics_alpha)
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return;
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/* skip screen update when vga/video is disabled or the sequencer is in reset mode */
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if (!BX_VGA_THIS s.vga_enabled || !BX_VGA_THIS s.attribute_ctrl.video_enabled
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|| !BX_VGA_THIS s.sequencer.reset2 || !BX_VGA_THIS s.sequencer.reset1
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|| (BX_VGA_THIS s.sequencer.reg1 & 0x20))
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return;
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/* skip screen update if the vertical retrace is in progress
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(using 72 Hz vertical frequency) */
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if ((bx_pc_system.time_usec() % 13888) < 70)
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return;
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if (BX_VGA_THIS vbe.bpp != VBE_DISPI_BPP_4) {
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// specific VBE code display update code
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unsigned pitch;
|
|
unsigned xc, yc, xti, yti;
|
|
unsigned r, c, w, h;
|
|
int i;
|
|
unsigned long red, green, blue, colour;
|
|
Bit8u * vid_ptr, * vid_ptr2;
|
|
Bit8u * tile_ptr, * tile_ptr2;
|
|
bx_svga_tileinfo_t info;
|
|
Bit8u dac_size = BX_VGA_THIS vbe.dac_8bit ? 8 : 6;
|
|
|
|
iWidth=BX_VGA_THIS vbe.xres;
|
|
iHeight=BX_VGA_THIS vbe.yres;
|
|
pitch = BX_VGA_THIS s.line_offset;
|
|
Bit8u *disp_ptr = &BX_VGA_THIS s.memory[BX_VGA_THIS vbe.virtual_start];
|
|
|
|
if (bx_gui->graphics_tile_info(&info)) {
|
|
if (info.is_indexed) {
|
|
switch (BX_VGA_THIS vbe.bpp) {
|
|
case 4:
|
|
case 15:
|
|
case 16:
|
|
case 24:
|
|
case 32:
|
|
BX_ERROR(("current guest pixel format is unsupported on indexed colour host displays"));
|
|
break;
|
|
case 8:
|
|
for (yc=0, yti = 0; yc<iHeight; yc+=Y_TILESIZE, yti++) {
|
|
for (xc=0, xti = 0; xc<iWidth; xc+=X_TILESIZE, xti++) {
|
|
if (GET_TILE_UPDATED (xti, yti)) {
|
|
vid_ptr = disp_ptr + (yc * pitch + xc);
|
|
tile_ptr = bx_gui->graphics_tile_get(xc, yc, &w, &h);
|
|
for (r=0; r<h; r++) {
|
|
vid_ptr2 = vid_ptr;
|
|
tile_ptr2 = tile_ptr;
|
|
for (c=0; c<w; c++) {
|
|
colour = 0;
|
|
for (i=0; i<(int)BX_VGA_THIS vbe.bpp; i+=8) {
|
|
colour |= *(vid_ptr2++) << i;
|
|
}
|
|
if (info.is_little_endian) {
|
|
for (i=0; i<info.bpp; i+=8) {
|
|
*(tile_ptr2++) = (Bit8u)(colour >> i);
|
|
}
|
|
} else {
|
|
for (i=info.bpp-8; i>-8; i-=8) {
|
|
*(tile_ptr2++) = (Bit8u)(colour >> i);
|
|
}
|
|
}
|
|
}
|
|
vid_ptr += pitch;
|
|
tile_ptr += info.pitch;
|
|
}
|
|
bx_gui->graphics_tile_update_in_place(xc, yc, w, h);
|
|
SET_TILE_UPDATED (xti, yti, 0);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
} else {
|
|
switch (BX_VGA_THIS vbe.bpp) {
|
|
case 4:
|
|
BX_ERROR(("cannot draw 4bpp SVGA"));
|
|
break;
|
|
case 8:
|
|
for (yc=0, yti = 0; yc<iHeight; yc+=Y_TILESIZE, yti++) {
|
|
for (xc=0, xti = 0; xc<iWidth; xc+=X_TILESIZE, xti++) {
|
|
if (GET_TILE_UPDATED (xti, yti)) {
|
|
vid_ptr = disp_ptr + (yc * pitch + xc);
|
|
tile_ptr = bx_gui->graphics_tile_get(xc, yc, &w, &h);
|
|
for (r=0; r<h; r++) {
|
|
vid_ptr2 = vid_ptr;
|
|
tile_ptr2 = tile_ptr;
|
|
for (c=0; c<w; c++) {
|
|
colour = *(vid_ptr2++);
|
|
colour = MAKE_COLOUR(
|
|
BX_VGA_THIS s.pel.data[colour].red, dac_size, info.red_shift, info.red_mask,
|
|
BX_VGA_THIS s.pel.data[colour].green, dac_size, info.green_shift, info.green_mask,
|
|
BX_VGA_THIS s.pel.data[colour].blue, dac_size, info.blue_shift, info.blue_mask);
|
|
if (info.is_little_endian) {
|
|
for (i=0; i<info.bpp; i+=8) {
|
|
*(tile_ptr2++) = (Bit8u)(colour >> i);
|
|
}
|
|
} else {
|
|
for (i=info.bpp-8; i>-8; i-=8) {
|
|
*(tile_ptr2++) = (Bit8u)(colour >> i);
|
|
}
|
|
}
|
|
}
|
|
vid_ptr += pitch;
|
|
tile_ptr += info.pitch;
|
|
}
|
|
bx_gui->graphics_tile_update_in_place(xc, yc, w, h);
|
|
SET_TILE_UPDATED (xti, yti, 0);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case 15:
|
|
for (yc=0, yti = 0; yc<iHeight; yc+=Y_TILESIZE, yti++) {
|
|
for (xc=0, xti = 0; xc<iWidth; xc+=X_TILESIZE, xti++) {
|
|
if (GET_TILE_UPDATED (xti, yti)) {
|
|
vid_ptr = disp_ptr + (yc * pitch + (xc<<1));
|
|
tile_ptr = bx_gui->graphics_tile_get(xc, yc, &w, &h);
|
|
for (r=0; r<h; r++) {
|
|
vid_ptr2 = vid_ptr;
|
|
tile_ptr2 = tile_ptr;
|
|
for (c=0; c<w; c++) {
|
|
colour = *(vid_ptr2++);
|
|
colour |= *(vid_ptr2++) << 8;
|
|
colour = MAKE_COLOUR(
|
|
colour & 0x001f, 5, info.blue_shift, info.blue_mask,
|
|
colour & 0x03e0, 10, info.green_shift, info.green_mask,
|
|
colour & 0x7c00, 15, info.red_shift, info.red_mask);
|
|
if (info.is_little_endian) {
|
|
for (i=0; i<info.bpp; i+=8) {
|
|
*(tile_ptr2++) = (Bit8u)(colour >> i);
|
|
}
|
|
} else {
|
|
for (i=info.bpp-8; i>-8; i-=8) {
|
|
*(tile_ptr2++) = (Bit8u)(colour >> i);
|
|
}
|
|
}
|
|
}
|
|
vid_ptr += pitch;
|
|
tile_ptr += info.pitch;
|
|
}
|
|
bx_gui->graphics_tile_update_in_place(xc, yc, w, h);
|
|
SET_TILE_UPDATED (xti, yti, 0);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case 16:
|
|
for (yc=0, yti = 0; yc<iHeight; yc+=Y_TILESIZE, yti++) {
|
|
for (xc=0, xti = 0; xc<iWidth; xc+=X_TILESIZE, xti++) {
|
|
if (GET_TILE_UPDATED (xti, yti)) {
|
|
vid_ptr = disp_ptr + (yc * pitch + (xc<<1));
|
|
tile_ptr = bx_gui->graphics_tile_get(xc, yc, &w, &h);
|
|
for (r=0; r<h; r++) {
|
|
vid_ptr2 = vid_ptr;
|
|
tile_ptr2 = tile_ptr;
|
|
for (c=0; c<w; c++) {
|
|
colour = *(vid_ptr2++);
|
|
colour |= *(vid_ptr2++) << 8;
|
|
colour = MAKE_COLOUR(
|
|
colour & 0x001f, 5, info.blue_shift, info.blue_mask,
|
|
colour & 0x07e0, 11, info.green_shift, info.green_mask,
|
|
colour & 0xf800, 16, info.red_shift, info.red_mask);
|
|
if (info.is_little_endian) {
|
|
for (i=0; i<info.bpp; i+=8) {
|
|
*(tile_ptr2++) = (Bit8u)(colour >> i);
|
|
}
|
|
} else {
|
|
for (i=info.bpp-8; i>-8; i-=8) {
|
|
*(tile_ptr2++) = (Bit8u)(colour >> i);
|
|
}
|
|
}
|
|
}
|
|
vid_ptr += pitch;
|
|
tile_ptr += info.pitch;
|
|
}
|
|
bx_gui->graphics_tile_update_in_place(xc, yc, w, h);
|
|
SET_TILE_UPDATED (xti, yti, 0);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case 24:
|
|
for (yc=0, yti = 0; yc<iHeight; yc+=Y_TILESIZE, yti++) {
|
|
for (xc=0, xti = 0; xc<iWidth; xc+=X_TILESIZE, xti++) {
|
|
if (GET_TILE_UPDATED (xti, yti)) {
|
|
vid_ptr = disp_ptr + (yc * pitch + 3*xc);
|
|
tile_ptr = bx_gui->graphics_tile_get(xc, yc, &w, &h);
|
|
for (r=0; r<h; r++) {
|
|
vid_ptr2 = vid_ptr;
|
|
tile_ptr2 = tile_ptr;
|
|
for (c=0; c<w; c++) {
|
|
blue = *(vid_ptr2++);
|
|
green = *(vid_ptr2++);
|
|
red = *(vid_ptr2++);
|
|
colour = MAKE_COLOUR(
|
|
red, 8, info.red_shift, info.red_mask,
|
|
green, 8, info.green_shift, info.green_mask,
|
|
blue, 8, info.blue_shift, info.blue_mask);
|
|
if (info.is_little_endian) {
|
|
for (i=0; i<info.bpp; i+=8) {
|
|
*(tile_ptr2++) = (Bit8u)(colour >> i);
|
|
}
|
|
} else {
|
|
for (i=info.bpp-8; i>-8; i-=8) {
|
|
*(tile_ptr2++) = (Bit8u)(colour >> i);
|
|
}
|
|
}
|
|
}
|
|
vid_ptr += pitch;
|
|
tile_ptr += info.pitch;
|
|
}
|
|
bx_gui->graphics_tile_update_in_place(xc, yc, w, h);
|
|
SET_TILE_UPDATED (xti, yti, 0);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case 32:
|
|
for (yc=0, yti = 0; yc<iHeight; yc+=Y_TILESIZE, yti++) {
|
|
for (xc=0, xti = 0; xc<iWidth; xc+=X_TILESIZE, xti++) {
|
|
if (GET_TILE_UPDATED (xti, yti)) {
|
|
vid_ptr = disp_ptr + (yc * pitch + (xc<<2));
|
|
tile_ptr = bx_gui->graphics_tile_get(xc, yc, &w, &h);
|
|
for (r=0; r<h; r++) {
|
|
vid_ptr2 = vid_ptr;
|
|
tile_ptr2 = tile_ptr;
|
|
for (c=0; c<w; c++) {
|
|
blue = *(vid_ptr2++);
|
|
green = *(vid_ptr2++);
|
|
red = *(vid_ptr2++);
|
|
vid_ptr2++;
|
|
colour = MAKE_COLOUR(
|
|
red, 8, info.red_shift, info.red_mask,
|
|
green, 8, info.green_shift, info.green_mask,
|
|
blue, 8, info.blue_shift, info.blue_mask);
|
|
if (info.is_little_endian) {
|
|
for (i=0; i<info.bpp; i+=8) {
|
|
*(tile_ptr2++) = (Bit8u)(colour >> i);
|
|
}
|
|
} else {
|
|
for (i=info.bpp-8; i>-8; i-=8) {
|
|
*(tile_ptr2++) = (Bit8u)(colour >> i);
|
|
}
|
|
}
|
|
}
|
|
vid_ptr += pitch;
|
|
tile_ptr += info.pitch;
|
|
}
|
|
bx_gui->graphics_tile_update_in_place(xc, yc, w, h);
|
|
SET_TILE_UPDATED (xti, yti, 0);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
BX_VGA_THIS s.last_xres = iWidth;
|
|
BX_VGA_THIS s.last_yres = iHeight;
|
|
BX_VGA_THIS s.vga_mem_updated = 0;
|
|
} else {
|
|
BX_PANIC(("cannot get svga tile info"));
|
|
}
|
|
} else {
|
|
unsigned r, c, x, y;
|
|
unsigned xc, yc, xti, yti;
|
|
Bit8u *plane[4];
|
|
|
|
BX_VGA_THIS determine_screen_dimensions(&iHeight, &iWidth);
|
|
if ((iWidth != BX_VGA_THIS s.last_xres) || (iHeight != BX_VGA_THIS s.last_yres) ||
|
|
(BX_VGA_THIS s.last_bpp > 8)) {
|
|
bx_gui->dimension_update(iWidth, iHeight);
|
|
BX_VGA_THIS s.last_xres = iWidth;
|
|
BX_VGA_THIS s.last_yres = iHeight;
|
|
BX_VGA_THIS s.last_bpp = 8;
|
|
}
|
|
|
|
plane[0] = &BX_VGA_THIS s.memory[0<<VBE_DISPI_4BPP_PLANE_SHIFT];
|
|
plane[1] = &BX_VGA_THIS s.memory[1<<VBE_DISPI_4BPP_PLANE_SHIFT];
|
|
plane[2] = &BX_VGA_THIS s.memory[2<<VBE_DISPI_4BPP_PLANE_SHIFT];
|
|
plane[3] = &BX_VGA_THIS s.memory[3<<VBE_DISPI_4BPP_PLANE_SHIFT];
|
|
|
|
for (yc=0, yti=0; yc<iHeight; yc+=Y_TILESIZE, yti++) {
|
|
for (xc=0, xti=0; xc<iWidth; xc+=X_TILESIZE, xti++) {
|
|
if (GET_TILE_UPDATED (xti, yti)) {
|
|
for (r=0; r<Y_TILESIZE; r++) {
|
|
y = yc + r;
|
|
if (BX_VGA_THIS s.y_doublescan) y >>= 1;
|
|
for (c=0; c<X_TILESIZE; c++) {
|
|
x = xc + c;
|
|
BX_VGA_THIS s.tile[r*X_TILESIZE + c] =
|
|
BX_VGA_THIS get_vga_pixel(x, y, BX_VGA_THIS vbe.virtual_start, 0xffff, 0, plane);
|
|
}
|
|
}
|
|
SET_TILE_UPDATED (xti, yti, 0);
|
|
bx_gui->graphics_tile_update(BX_VGA_THIS s.tile, xc, yc);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
BX_VGA_THIS bx_vgacore_c::update();
|
|
}
|
|
}
|
|
|
|
bx_bool bx_vga_c::mem_read_handler(bx_phy_address addr, unsigned len, void *data, void *param)
|
|
{
|
|
Bit8u *data_ptr;
|
|
#ifdef BX_LITTLE_ENDIAN
|
|
data_ptr = (Bit8u *) data;
|
|
#else // BX_BIG_ENDIAN
|
|
data_ptr = (Bit8u *) data + (len - 1);
|
|
#endif
|
|
for (unsigned i = 0; i < len; i++) {
|
|
*data_ptr = theVga->mem_read(addr);
|
|
addr++;
|
|
#ifdef BX_LITTLE_ENDIAN
|
|
data_ptr++;
|
|
#else // BX_BIG_ENDIAN
|
|
data_ptr--;
|
|
#endif
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
Bit8u bx_vga_c::mem_read(bx_phy_address addr)
|
|
{
|
|
#if BX_SUPPORT_PCI
|
|
if ((BX_VGA_THIS pci_enabled) && (BX_VGA_THIS pci_rom_size > 0)) {
|
|
Bit32u mask = (BX_VGA_THIS pci_rom_size - 1);
|
|
if ((addr & ~mask) == BX_VGA_THIS pci_rom_address) {
|
|
if (BX_VGA_THIS pci_conf[0x30] & 0x01) {
|
|
return BX_VGA_THIS pci_rom[addr & mask];
|
|
} else {
|
|
return 0xff;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
// if in a vbe enabled mode, read from the vbe_memory
|
|
if ((BX_VGA_THIS vbe.enabled) && (BX_VGA_THIS vbe.bpp != VBE_DISPI_BPP_4)) {
|
|
return vbe_mem_read(addr);
|
|
} else if ((BX_VGA_THIS vbe.base_address != 0) && (addr >= BX_VGA_THIS vbe.base_address)) {
|
|
return 0xff;
|
|
}
|
|
|
|
return bx_vgacore_c::mem_read(addr);
|
|
}
|
|
|
|
bx_bool bx_vga_c::mem_write_handler(bx_phy_address addr, unsigned len, void *data, void *param)
|
|
{
|
|
Bit8u *data_ptr;
|
|
#ifdef BX_LITTLE_ENDIAN
|
|
data_ptr = (Bit8u *) data;
|
|
#else // BX_BIG_ENDIAN
|
|
data_ptr = (Bit8u *) data + (len - 1);
|
|
#endif
|
|
for (unsigned i = 0; i < len; i++) {
|
|
theVga->mem_write(addr, *data_ptr);
|
|
addr++;
|
|
#ifdef BX_LITTLE_ENDIAN
|
|
data_ptr++;
|
|
#else // BX_BIG_ENDIAN
|
|
data_ptr--;
|
|
#endif
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void bx_vga_c::mem_write(bx_phy_address addr, Bit8u value)
|
|
{
|
|
// if in a vbe enabled mode, write to the vbe_memory
|
|
if ((BX_VGA_THIS vbe.enabled) && (BX_VGA_THIS vbe.bpp != VBE_DISPI_BPP_4)) {
|
|
vbe_mem_write(addr, value);
|
|
return;
|
|
} else if ((BX_VGA_THIS vbe.base_address != 0) && (addr >= BX_VGA_THIS vbe.base_address)) {
|
|
return;
|
|
}
|
|
|
|
bx_vgacore_c::mem_write(addr, value);
|
|
}
|
|
|
|
int bx_vga_c::get_snapshot_mode()
|
|
{
|
|
if ((BX_VGA_THIS vbe.enabled) && (BX_VGA_THIS vbe.bpp >= 8)) {
|
|
return BX_GUI_SNAPSHOT_GFX;
|
|
} else {
|
|
return bx_vgacore_c::get_snapshot_mode();
|
|
}
|
|
}
|
|
|
|
Bit32u bx_vga_c::get_gfx_snapshot(Bit8u **snapshot_ptr, Bit8u **palette_ptr,
|
|
unsigned *iHeight, unsigned *iWidth, unsigned *iDepth)
|
|
{
|
|
Bit32u len, len1;
|
|
unsigned i, shift;
|
|
Bit8u *dst_ptr, *src_ptr;
|
|
|
|
if ((BX_VGA_THIS vbe.enabled) && (BX_VGA_THIS vbe.bpp >= 8)) {
|
|
*iHeight = BX_VGA_THIS vbe.yres;
|
|
*iWidth = BX_VGA_THIS vbe.xres;
|
|
*iDepth = BX_VGA_THIS vbe.bpp;
|
|
len1 = BX_VGA_THIS vbe.xres * BX_VGA_THIS vbe.bpp_multiplier;
|
|
len = len1 * BX_VGA_THIS vbe.yres;
|
|
*snapshot_ptr = (Bit8u*)malloc(len);
|
|
if (snapshot_ptr == NULL)
|
|
return 0;
|
|
src_ptr = BX_VGA_THIS s.memory + BX_VGA_THIS vbe.virtual_start;
|
|
dst_ptr = *snapshot_ptr;
|
|
for (i = 0; i < BX_VGA_THIS vbe.yres; i++) {
|
|
memcpy(dst_ptr, src_ptr, len1);
|
|
src_ptr += BX_VGA_THIS s.line_offset;
|
|
dst_ptr += len1;
|
|
}
|
|
if (*iDepth == 8) {
|
|
if (BX_VGA_THIS vbe.dac_8bit) {
|
|
shift = 0;
|
|
} else {
|
|
shift = 2;
|
|
}
|
|
BX_VGA_THIS get_dac_palette(palette_ptr, shift);
|
|
}
|
|
return len;
|
|
} else {
|
|
return bx_vgacore_c::get_gfx_snapshot(snapshot_ptr, palette_ptr, iHeight, iWidth, iDepth);
|
|
}
|
|
}
|
|
|
|
void bx_vga_c::redraw_area(unsigned x0, unsigned y0, unsigned width,
|
|
unsigned height)
|
|
{
|
|
unsigned xti, yti, xt0, xt1, yt0, yt1, xmax, ymax;
|
|
|
|
if (width == 0 || height == 0) {
|
|
return;
|
|
}
|
|
|
|
if (BX_VGA_THIS vbe.enabled) {
|
|
BX_VGA_THIS s.vga_mem_updated = 1;
|
|
xmax = BX_VGA_THIS vbe.xres;
|
|
ymax = BX_VGA_THIS vbe.yres;
|
|
xt0 = x0 / X_TILESIZE;
|
|
yt0 = y0 / Y_TILESIZE;
|
|
if (x0 < xmax) {
|
|
xt1 = (x0 + width - 1) / X_TILESIZE;
|
|
} else {
|
|
xt1 = (xmax - 1) / X_TILESIZE;
|
|
}
|
|
if (y0 < ymax) {
|
|
yt1 = (y0 + height - 1) / Y_TILESIZE;
|
|
} else {
|
|
yt1 = (ymax - 1) / Y_TILESIZE;
|
|
}
|
|
for (yti=yt0; yti<=yt1; yti++) {
|
|
for (xti=xt0; xti<=xt1; xti++) {
|
|
SET_TILE_UPDATED(xti, yti, 1);
|
|
}
|
|
}
|
|
|
|
} else {
|
|
bx_vgacore_c::redraw_area(x0, y0, width, height);
|
|
}
|
|
}
|
|
|
|
|
|
bx_bool bx_vga_c::vbe_set_base_addr(Bit32u *addr, Bit8u *pci_conf)
|
|
{
|
|
if (DEV_pci_set_base_mem(BX_VGA_THIS_PTR, mem_read_handler,
|
|
mem_write_handler,
|
|
addr, pci_conf, VBE_DISPI_TOTAL_VIDEO_MEMORY_BYTES)) {
|
|
BX_VGA_THIS vbe.base_address = *addr;
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
Bit8u BX_CPP_AttrRegparmN(1)
|
|
bx_vga_c::vbe_mem_read(bx_phy_address addr)
|
|
{
|
|
Bit32u offset;
|
|
|
|
if (addr >= BX_VGA_THIS vbe.base_address) {
|
|
// LFB read
|
|
offset = (Bit32u)(addr - BX_VGA_THIS vbe.base_address);
|
|
}
|
|
else {
|
|
// banked mode read
|
|
offset = (Bit32u)(BX_VGA_THIS vbe.bank*65536 + addr - 0xA0000);
|
|
}
|
|
|
|
// check for out of memory read
|
|
if (offset > VBE_DISPI_TOTAL_VIDEO_MEMORY_BYTES)
|
|
return 0;
|
|
|
|
return (BX_VGA_THIS s.memory[offset]);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(2)
|
|
bx_vga_c::vbe_mem_write(bx_phy_address addr, Bit8u value)
|
|
{
|
|
Bit32u offset;
|
|
unsigned x_tileno, y_tileno;
|
|
|
|
if (BX_VGA_THIS vbe.lfb_enabled)
|
|
{
|
|
if (addr >= BX_VGA_THIS vbe.base_address) {
|
|
// LFB write
|
|
offset = (Bit32u)(addr - BX_VGA_THIS vbe.base_address);
|
|
}
|
|
else {
|
|
// banked mode write while in LFB mode -> ignore
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (addr < BX_VGA_THIS vbe.base_address) {
|
|
// banked mode write
|
|
offset = (Bit32u)(BX_VGA_THIS vbe.bank*65536 + (addr - 0xA0000));
|
|
}
|
|
else {
|
|
// LFB write while in banked mode -> ignore
|
|
return;
|
|
}
|
|
}
|
|
|
|
// check for out of memory write
|
|
if (offset < VBE_DISPI_TOTAL_VIDEO_MEMORY_BYTES)
|
|
{
|
|
BX_VGA_THIS s.memory[offset]=value;
|
|
}
|
|
else
|
|
{
|
|
// make sure we don't flood the logfile
|
|
static int count=0;
|
|
if (count<100)
|
|
{
|
|
count ++;
|
|
BX_INFO(("VBE_mem_write out of video memory write at %x",offset));
|
|
}
|
|
}
|
|
|
|
offset-=BX_VGA_THIS vbe.virtual_start;
|
|
|
|
// only update the UI when writing 'onscreen'
|
|
if (offset < BX_VGA_THIS vbe.visible_screen_size)
|
|
{
|
|
y_tileno = ((offset / BX_VGA_THIS vbe.bpp_multiplier) / BX_VGA_THIS vbe.virtual_xres) / Y_TILESIZE;
|
|
x_tileno = ((offset / BX_VGA_THIS vbe.bpp_multiplier) % BX_VGA_THIS vbe.virtual_xres) / X_TILESIZE;
|
|
|
|
if ((y_tileno < BX_VGA_THIS s.num_y_tiles) && (x_tileno < BX_VGA_THIS s.num_x_tiles))
|
|
{
|
|
BX_VGA_THIS s.vga_mem_updated = 1;
|
|
SET_TILE_UPDATED (x_tileno, y_tileno, 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
Bit32u bx_vga_c::vbe_read_handler(void *this_ptr, Bit32u address, unsigned io_len)
|
|
{
|
|
#if BX_USE_VGA_SMF == 0
|
|
bx_vga_c *class_ptr = (bx_vga_c *) this_ptr;
|
|
return class_ptr->vbe_read(address, io_len);
|
|
}
|
|
|
|
Bit32u bx_vga_c::vbe_read(Bit32u address, unsigned io_len)
|
|
{
|
|
#else
|
|
UNUSED(this_ptr);
|
|
#endif // BX_USE_VGA_SMF == 0
|
|
Bit16u retval;
|
|
|
|
// BX_INFO(("VBE_read %x (len %x)", address, io_len));
|
|
|
|
if (address==VBE_DISPI_IOPORT_INDEX)
|
|
{
|
|
// index register
|
|
return (Bit32u) BX_VGA_THIS vbe.curindex;
|
|
}
|
|
else
|
|
{
|
|
// data register read
|
|
|
|
switch (BX_VGA_THIS vbe.curindex)
|
|
{
|
|
case VBE_DISPI_INDEX_ID: // Display Interface ID check
|
|
return BX_VGA_THIS vbe.cur_dispi;
|
|
|
|
case VBE_DISPI_INDEX_XRES: // x resolution
|
|
if (BX_VGA_THIS vbe.get_capabilities) {
|
|
return BX_VGA_THIS vbe.max_xres;
|
|
} else {
|
|
return BX_VGA_THIS vbe.xres;
|
|
}
|
|
|
|
case VBE_DISPI_INDEX_YRES: // y resolution
|
|
if (BX_VGA_THIS vbe.get_capabilities) {
|
|
return BX_VGA_THIS vbe.max_yres;
|
|
} else {
|
|
return BX_VGA_THIS vbe.yres;
|
|
}
|
|
|
|
case VBE_DISPI_INDEX_BPP: // bpp
|
|
if (BX_VGA_THIS vbe.get_capabilities) {
|
|
return BX_VGA_THIS vbe.max_bpp;
|
|
} else {
|
|
return BX_VGA_THIS vbe.bpp;
|
|
}
|
|
|
|
case VBE_DISPI_INDEX_ENABLE: // vbe enabled
|
|
retval = BX_VGA_THIS vbe.enabled;
|
|
if (BX_VGA_THIS vbe.get_capabilities)
|
|
retval |= VBE_DISPI_GETCAPS;
|
|
if (BX_VGA_THIS vbe.dac_8bit)
|
|
retval |= VBE_DISPI_8BIT_DAC;
|
|
return retval;
|
|
|
|
case VBE_DISPI_INDEX_BANK: // current bank
|
|
return BX_VGA_THIS vbe.bank;
|
|
|
|
case VBE_DISPI_INDEX_X_OFFSET:
|
|
return BX_VGA_THIS vbe.offset_x;
|
|
|
|
case VBE_DISPI_INDEX_Y_OFFSET:
|
|
return BX_VGA_THIS vbe.offset_y;
|
|
|
|
case VBE_DISPI_INDEX_VIRT_WIDTH:
|
|
return BX_VGA_THIS vbe.virtual_xres;
|
|
|
|
case VBE_DISPI_INDEX_VIRT_HEIGHT:
|
|
return BX_VGA_THIS vbe.virtual_yres;
|
|
|
|
case VBE_DISPI_INDEX_VIDEO_MEMORY_64K:
|
|
return (VBE_DISPI_TOTAL_VIDEO_MEMORY_KB >> 6);
|
|
|
|
default:
|
|
BX_PANIC(("VBE unknown data read index 0x%x",BX_VGA_THIS vbe.curindex));
|
|
break;
|
|
}
|
|
}
|
|
BX_PANIC(("VBE_read shouldn't reach this"));
|
|
return 0; /* keep compiler happy */
|
|
}
|
|
|
|
void bx_vga_c::vbe_write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len)
|
|
{
|
|
#if BX_USE_VGA_SMF == 0
|
|
bx_vga_c *class_ptr = (bx_vga_c *) this_ptr;
|
|
class_ptr->vbe_write(address, value, io_len);
|
|
}
|
|
|
|
Bit32u bx_vga_c::vbe_write(Bit32u address, Bit32u value, unsigned io_len)
|
|
{
|
|
#else
|
|
UNUSED(this_ptr);
|
|
#endif
|
|
bx_bool new_vbe_8bit_dac;
|
|
bx_bool needs_update = 0;
|
|
unsigned i;
|
|
|
|
// BX_INFO(("VBE_write %x = %x (len %x)", address, value, io_len));
|
|
|
|
switch(address)
|
|
{
|
|
// index register
|
|
case VBE_DISPI_IOPORT_INDEX:
|
|
|
|
BX_VGA_THIS vbe.curindex = (Bit16u) value;
|
|
break;
|
|
|
|
// data register
|
|
// FIXME: maybe do some 'sanity' checks on received data?
|
|
case VBE_DISPI_IOPORT_DATA:
|
|
switch (BX_VGA_THIS vbe.curindex)
|
|
{
|
|
case VBE_DISPI_INDEX_ID: // Display Interface ID check
|
|
{
|
|
if ((value == VBE_DISPI_ID0) ||
|
|
(value == VBE_DISPI_ID1) ||
|
|
(value == VBE_DISPI_ID2) ||
|
|
(value == VBE_DISPI_ID3) ||
|
|
(value == VBE_DISPI_ID4) ||
|
|
(value == VBE_DISPI_ID5))
|
|
{
|
|
// allow backwards compatible with previous dispi bioses
|
|
BX_VGA_THIS vbe.cur_dispi=value;
|
|
}
|
|
else
|
|
{
|
|
BX_PANIC(("VBE unknown Display Interface %x", value));
|
|
}
|
|
|
|
// make sure we don't flood the logfile
|
|
static int count=0;
|
|
if (count < 100)
|
|
{
|
|
count++;
|
|
BX_INFO(("VBE known Display Interface %x", value));
|
|
}
|
|
} break;
|
|
|
|
case VBE_DISPI_INDEX_XRES: // set xres
|
|
{
|
|
// check that we don't set xres during vbe enabled
|
|
if (!BX_VGA_THIS vbe.enabled)
|
|
{
|
|
// check for within max xres range
|
|
if (value <= VBE_DISPI_MAX_XRES)
|
|
{
|
|
BX_VGA_THIS vbe.xres=(Bit16u) value;
|
|
BX_INFO(("VBE set xres (%d)", value));
|
|
}
|
|
else
|
|
{
|
|
BX_INFO(("VBE set xres more then max xres (%d)", value));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
BX_ERROR(("VBE set xres during vbe enabled!"));
|
|
}
|
|
} break;
|
|
|
|
case VBE_DISPI_INDEX_YRES: // set yres
|
|
{
|
|
// check that we don't set yres during vbe enabled
|
|
if (!BX_VGA_THIS vbe.enabled)
|
|
{
|
|
// check for within max yres range
|
|
if (value <= VBE_DISPI_MAX_YRES)
|
|
{
|
|
BX_VGA_THIS vbe.yres=(Bit16u) value;
|
|
BX_INFO(("VBE set yres (%d)", value));
|
|
}
|
|
else
|
|
{
|
|
BX_INFO(("VBE set yres more then max yres (%d)", value));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
BX_ERROR(("VBE set yres during vbe enabled!"));
|
|
}
|
|
} break;
|
|
|
|
case VBE_DISPI_INDEX_BPP: // set bpp
|
|
{
|
|
// check that we don't set bpp during vbe enabled
|
|
if (!BX_VGA_THIS vbe.enabled)
|
|
{
|
|
// for backward compatiblity
|
|
if (value == 0) value = VBE_DISPI_BPP_8;
|
|
// check for correct bpp range
|
|
if ((value == VBE_DISPI_BPP_4) || (value == VBE_DISPI_BPP_8) || (value == VBE_DISPI_BPP_15) ||
|
|
(value == VBE_DISPI_BPP_16) || (value == VBE_DISPI_BPP_24) || (value == VBE_DISPI_BPP_32))
|
|
{
|
|
BX_VGA_THIS vbe.bpp=(Bit16u) value;
|
|
BX_INFO(("VBE set bpp (%d)", value));
|
|
}
|
|
else
|
|
{
|
|
BX_ERROR(("VBE set bpp with unknown bpp (%d)", value));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
BX_ERROR(("VBE set bpp during vbe enabled!"));
|
|
}
|
|
} break;
|
|
|
|
case VBE_DISPI_INDEX_BANK: // set bank
|
|
{
|
|
value=value & 0xff; // FIXME lobyte = vbe bank A?
|
|
unsigned divider = (BX_VGA_THIS vbe.bpp!=VBE_DISPI_BPP_4)?64:256;
|
|
// check for max bank nr
|
|
if (value < (VBE_DISPI_TOTAL_VIDEO_MEMORY_KB / divider))
|
|
{
|
|
if (!BX_VGA_THIS vbe.lfb_enabled)
|
|
{
|
|
BX_DEBUG(("VBE set bank to %d", value));
|
|
BX_VGA_THIS vbe.bank = value;
|
|
BX_VGA_THIS s.plane_offset = (BX_VGA_THIS vbe.bank << 16);
|
|
}
|
|
else
|
|
{
|
|
BX_ERROR(("VBE set bank in LFB mode ignored"));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
BX_ERROR(("VBE set invalid bank (%d)", value));
|
|
}
|
|
} break;
|
|
|
|
case VBE_DISPI_INDEX_ENABLE: // enable video
|
|
{
|
|
if ((value & VBE_DISPI_ENABLED) && !BX_VGA_THIS vbe.enabled)
|
|
{
|
|
unsigned depth=0;
|
|
|
|
// setup virtual resolution to be the same as current reso
|
|
BX_VGA_THIS vbe.virtual_yres=BX_VGA_THIS vbe.yres;
|
|
BX_VGA_THIS vbe.virtual_xres=BX_VGA_THIS vbe.xres;
|
|
|
|
// reset offset
|
|
BX_VGA_THIS vbe.offset_x=0;
|
|
BX_VGA_THIS vbe.offset_y=0;
|
|
BX_VGA_THIS vbe.virtual_start=0;
|
|
|
|
switch((BX_VGA_THIS vbe.bpp))
|
|
{
|
|
// Default pixel sizes
|
|
case VBE_DISPI_BPP_8:
|
|
BX_VGA_THIS vbe.bpp_multiplier = 1;
|
|
BX_VGA_THIS s.line_offset = BX_VGA_THIS vbe.virtual_xres;
|
|
depth=8;
|
|
break;
|
|
|
|
case VBE_DISPI_BPP_4:
|
|
BX_VGA_THIS vbe.bpp_multiplier = 1;
|
|
BX_VGA_THIS s.line_offset = (BX_VGA_THIS vbe.virtual_xres >> 3);
|
|
depth=4;
|
|
break;
|
|
|
|
case VBE_DISPI_BPP_15:
|
|
BX_VGA_THIS vbe.bpp_multiplier = 2;
|
|
BX_VGA_THIS s.line_offset = BX_VGA_THIS vbe.virtual_xres * 2;
|
|
depth=15;
|
|
break;
|
|
|
|
case VBE_DISPI_BPP_16:
|
|
BX_VGA_THIS vbe.bpp_multiplier = 2;
|
|
BX_VGA_THIS s.line_offset = BX_VGA_THIS vbe.virtual_xres * 2;
|
|
depth=16;
|
|
break;
|
|
|
|
case VBE_DISPI_BPP_24:
|
|
BX_VGA_THIS vbe.bpp_multiplier = 3;
|
|
BX_VGA_THIS s.line_offset = BX_VGA_THIS vbe.virtual_xres * 3;
|
|
depth=24;
|
|
break;
|
|
|
|
case VBE_DISPI_BPP_32:
|
|
BX_VGA_THIS vbe.bpp_multiplier = 4;
|
|
BX_VGA_THIS s.line_offset = BX_VGA_THIS vbe.virtual_xres << 2;
|
|
depth=32;
|
|
break;
|
|
}
|
|
BX_VGA_THIS vbe.visible_screen_size = BX_VGA_THIS s.line_offset * BX_VGA_THIS vbe.yres;
|
|
|
|
BX_INFO(("VBE enabling x %d, y %d, bpp %d, %u bytes visible", BX_VGA_THIS vbe.xres, BX_VGA_THIS vbe.yres, BX_VGA_THIS vbe.bpp, BX_VGA_THIS vbe.visible_screen_size));
|
|
|
|
if (depth > 4) {
|
|
BX_VGA_THIS vbe.lfb_enabled = (bx_bool)(value & VBE_DISPI_LFB_ENABLED);
|
|
if ((value & VBE_DISPI_NOCLEARMEM) == 0) {
|
|
memset(BX_VGA_THIS s.memory, 0, BX_VGA_THIS vbe.visible_screen_size);
|
|
}
|
|
bx_gui->dimension_update(BX_VGA_THIS vbe.xres, BX_VGA_THIS vbe.yres, 0, 0, depth);
|
|
BX_VGA_THIS s.last_bpp = depth;
|
|
} else {
|
|
BX_VGA_THIS s.plane_shift = VBE_DISPI_4BPP_PLANE_SHIFT;
|
|
BX_VGA_THIS s.plane_offset = (BX_VGA_THIS vbe.bank << 16);
|
|
}
|
|
} else if (((value & VBE_DISPI_ENABLED) == 0) && BX_VGA_THIS vbe.enabled) {
|
|
BX_INFO(("VBE disabling"));
|
|
BX_VGA_THIS vbe.lfb_enabled = 0;
|
|
BX_VGA_THIS s.plane_shift = 16;
|
|
BX_VGA_THIS s.plane_offset = 0;
|
|
}
|
|
BX_VGA_THIS vbe.enabled = (bx_bool)(value & VBE_DISPI_ENABLED);
|
|
BX_VGA_THIS vbe.get_capabilities = (bx_bool)((value & VBE_DISPI_GETCAPS) != 0);
|
|
new_vbe_8bit_dac = (bx_bool)((value & VBE_DISPI_8BIT_DAC) != 0);
|
|
if (new_vbe_8bit_dac != BX_VGA_THIS vbe.dac_8bit) {
|
|
if (new_vbe_8bit_dac) {
|
|
for (i=0; i<256; i++) {
|
|
BX_VGA_THIS s.pel.data[i].red <<= 2;
|
|
BX_VGA_THIS s.pel.data[i].green <<= 2;
|
|
BX_VGA_THIS s.pel.data[i].blue <<= 2;
|
|
}
|
|
BX_INFO(("DAC in 8 bit mode"));
|
|
} else {
|
|
for (i=0; i<256; i++) {
|
|
BX_VGA_THIS s.pel.data[i].red >>= 2;
|
|
BX_VGA_THIS s.pel.data[i].green >>= 2;
|
|
BX_VGA_THIS s.pel.data[i].blue >>= 2;
|
|
}
|
|
BX_INFO(("DAC in standard mode"));
|
|
}
|
|
BX_VGA_THIS vbe.dac_8bit = new_vbe_8bit_dac;
|
|
BX_VGA_THIS s.dac_shift = new_vbe_8bit_dac ? 0 : 2;
|
|
needs_update = 1;
|
|
}
|
|
} break;
|
|
|
|
case VBE_DISPI_INDEX_X_OFFSET:
|
|
{
|
|
BX_DEBUG(("VBE offset x %d", value));
|
|
BX_VGA_THIS vbe.offset_x=(Bit16u)value;
|
|
|
|
BX_VGA_THIS vbe.virtual_start = BX_VGA_THIS vbe.offset_y * BX_VGA_THIS s.line_offset;
|
|
if (BX_VGA_THIS vbe.bpp != VBE_DISPI_BPP_4) {
|
|
BX_VGA_THIS vbe.virtual_start += (BX_VGA_THIS vbe.offset_x * BX_VGA_THIS vbe.bpp_multiplier);
|
|
} else {
|
|
BX_VGA_THIS vbe.virtual_start += (BX_VGA_THIS vbe.offset_x >> 3);
|
|
}
|
|
needs_update = 1;
|
|
} break;
|
|
|
|
case VBE_DISPI_INDEX_Y_OFFSET:
|
|
{
|
|
BX_DEBUG(("VBE offset y %d", value));
|
|
|
|
Bit32u new_screen_start = value * BX_VGA_THIS s.line_offset;
|
|
if (BX_VGA_THIS vbe.bpp != VBE_DISPI_BPP_4) {
|
|
if ((new_screen_start + BX_VGA_THIS vbe.visible_screen_size) > VBE_DISPI_TOTAL_VIDEO_MEMORY_BYTES)
|
|
{
|
|
BX_PANIC(("VBE offset y %d out of bounds", value));
|
|
break;
|
|
}
|
|
new_screen_start += (BX_VGA_THIS vbe.offset_x * BX_VGA_THIS vbe.bpp_multiplier);
|
|
} else {
|
|
if ((new_screen_start + BX_VGA_THIS vbe.visible_screen_size) > (VBE_DISPI_TOTAL_VIDEO_MEMORY_BYTES / 4))
|
|
{
|
|
BX_PANIC(("VBE offset y %d out of bounds", value));
|
|
break;
|
|
}
|
|
new_screen_start += (BX_VGA_THIS vbe.offset_x >> 3);
|
|
}
|
|
BX_VGA_THIS vbe.virtual_start = new_screen_start;
|
|
BX_VGA_THIS vbe.offset_y = (Bit16u)value;
|
|
needs_update = 1;
|
|
} break;
|
|
|
|
case VBE_DISPI_INDEX_VIRT_WIDTH:
|
|
{
|
|
BX_INFO(("VBE requested virtual width %d", value));
|
|
|
|
// calculate virtual width & height dimensions
|
|
// req:
|
|
// virt_width > xres
|
|
// virt_height >=yres
|
|
// virt_width*virt_height < MAX_VIDEO_MEMORY
|
|
|
|
// basicly 2 situations
|
|
|
|
// situation 1:
|
|
// MAX_VIDEO_MEMORY / virt_width >= yres
|
|
// adjust result height
|
|
// else
|
|
// adjust result width based upon virt_height=yres
|
|
Bit16u new_width=value;
|
|
Bit16u new_height;
|
|
if (BX_VGA_THIS vbe.bpp != VBE_DISPI_BPP_4) {
|
|
new_height=(VBE_DISPI_TOTAL_VIDEO_MEMORY_BYTES / BX_VGA_THIS vbe.bpp_multiplier) / new_width;
|
|
} else {
|
|
new_height=(VBE_DISPI_TOTAL_VIDEO_MEMORY_BYTES * 2) / new_width;
|
|
}
|
|
if (new_height >=BX_VGA_THIS vbe.yres)
|
|
{
|
|
// we have a decent virtual width & new_height
|
|
BX_INFO(("VBE decent virtual height %d",new_height));
|
|
}
|
|
else
|
|
{
|
|
// no decent virtual height: adjust width & height
|
|
new_height=BX_VGA_THIS vbe.yres;
|
|
if (BX_VGA_THIS vbe.bpp != VBE_DISPI_BPP_4) {
|
|
new_width=(VBE_DISPI_TOTAL_VIDEO_MEMORY_BYTES / BX_VGA_THIS vbe.bpp_multiplier) / new_height;
|
|
} else {
|
|
new_width=(VBE_DISPI_TOTAL_VIDEO_MEMORY_BYTES * 2) / new_height;
|
|
}
|
|
|
|
BX_INFO(("VBE recalc virtual width %d height %d",new_width, new_height));
|
|
}
|
|
|
|
BX_VGA_THIS vbe.virtual_xres=new_width;
|
|
BX_VGA_THIS vbe.virtual_yres=new_height;
|
|
if (BX_VGA_THIS vbe.bpp != VBE_DISPI_BPP_4) {
|
|
BX_VGA_THIS s.line_offset = BX_VGA_THIS vbe.virtual_xres * BX_VGA_THIS vbe.bpp_multiplier;
|
|
} else {
|
|
BX_VGA_THIS s.line_offset = BX_VGA_THIS vbe.virtual_xres >> 3;
|
|
}
|
|
BX_VGA_THIS vbe.visible_screen_size = BX_VGA_THIS s.line_offset * BX_VGA_THIS vbe.yres;
|
|
|
|
} break;
|
|
case VBE_DISPI_INDEX_VIRT_HEIGHT:
|
|
BX_ERROR(("VBE: write to virtual height register ignored"));
|
|
break;
|
|
default:
|
|
BX_ERROR(("VBE: write unsupported register at index 0x%x",BX_VGA_THIS vbe.curindex));
|
|
break;
|
|
}
|
|
if (needs_update) {
|
|
BX_VGA_THIS s.vga_mem_updated = 1;
|
|
for (unsigned xti = 0; xti < BX_VGA_THIS s.num_x_tiles; xti++) {
|
|
for (unsigned yti = 0; yti < BX_VGA_THIS s.num_y_tiles; yti++) {
|
|
SET_TILE_UPDATED (xti, yti, 1);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
} // end switch address
|
|
}
|
|
|
|
#if BX_SUPPORT_PCI
|
|
// pci configuration space read callback handler
|
|
Bit32u bx_vga_c::pci_read_handler(Bit8u address, unsigned io_len)
|
|
{
|
|
Bit32u value = 0;
|
|
|
|
for (unsigned i=0; i<io_len; i++) {
|
|
value |= (BX_VGA_THIS pci_conf[address+i] << (i*8));
|
|
}
|
|
|
|
if (io_len == 1)
|
|
BX_DEBUG(("read PCI register 0x%02x value 0x%02x", address, value));
|
|
else if (io_len == 2)
|
|
BX_DEBUG(("read PCI register 0x%02x value 0x%04x", address, value));
|
|
else if (io_len == 4)
|
|
BX_DEBUG(("read PCI register 0x%02x value 0x%08x", address, value));
|
|
|
|
return value;
|
|
}
|
|
|
|
|
|
// static pci configuration space write callback handler
|
|
void bx_vga_c::pci_write_handler(Bit8u address, Bit32u value, unsigned io_len)
|
|
{
|
|
bx_bool baseaddr_change = 0, romaddr_change = 0;
|
|
|
|
if (io_len == 1)
|
|
BX_DEBUG(("write PCI register 0x%02x value 0x%02x", address, value));
|
|
else if (io_len == 2)
|
|
BX_DEBUG(("write PCI register 0x%02x value 0x%04x", address, value));
|
|
else if (io_len == 4)
|
|
BX_DEBUG(("write PCI register 0x%02x value 0x%08x", address, value));
|
|
|
|
if ((address >= 0x14) && (address < 0x30))
|
|
return;
|
|
|
|
if (address == 0x30) {
|
|
value = value & 0xfffffc01;
|
|
romaddr_change = 1;
|
|
}
|
|
|
|
for (unsigned i = 0; i < io_len; i++) {
|
|
unsigned write_addr = address + i;
|
|
Bit8u old_value = BX_VGA_THIS pci_conf[write_addr];
|
|
Bit8u new_value = (Bit8u)(value & 0xff);
|
|
switch (write_addr) {
|
|
case 0x04: // disallowing write to command
|
|
case 0x06: // disallowing write to status lo-byte (is that expected?)
|
|
break;
|
|
case 0x10: // base address #0
|
|
new_value = (new_value & 0xf0) | (old_value & 0x0f);
|
|
case 0x11: case 0x12: case 0x13:
|
|
if (BX_VGA_THIS vbe_present) {
|
|
baseaddr_change |= (old_value != new_value);
|
|
} else {
|
|
break;
|
|
}
|
|
default:
|
|
BX_VGA_THIS pci_conf[write_addr] = new_value;
|
|
}
|
|
value >>= 8;
|
|
}
|
|
|
|
if (baseaddr_change) {
|
|
if (BX_VGA_THIS vbe_set_base_addr(&BX_VGA_THIS pci_base_address[0],
|
|
&BX_VGA_THIS pci_conf[0x10])) {
|
|
BX_INFO(("new base address: 0x%08x", BX_VGA_THIS pci_base_address[0]));
|
|
}
|
|
}
|
|
if (romaddr_change) {
|
|
if (DEV_pci_set_base_mem(this, mem_read_handler, mem_write_handler,
|
|
&BX_VGA_THIS pci_rom_address,
|
|
&BX_VGA_THIS pci_conf[0x30],
|
|
BX_VGA_THIS pci_rom_size)) {
|
|
BX_INFO(("new ROM address: 0x%08x", BX_VGA_THIS pci_rom_address));
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if BX_DEBUGGER
|
|
void bx_vga_c::debug_dump(void)
|
|
{
|
|
if (BX_VGA_THIS vbe.enabled) {
|
|
dbg_printf("Bochs VGA/VBE adapter\n\n");
|
|
dbg_printf("current mode : %u x %u x %u\n", BX_VGA_THIS vbe.xres,
|
|
BX_VGA_THIS vbe.yres, BX_VGA_THIS vbe.bpp);
|
|
} else {
|
|
bx_vgacore_c::debug_dump();
|
|
}
|
|
}
|
|
#endif
|