5873b26a82
bochs.h already not include iodev.h which reduces compilation dependences for almost all cpu and fpu files, now cpu files will not be recompiled if iodev includes was changed
249 lines
7.4 KiB
C++
249 lines
7.4 KiB
C++
/////////////////////////////////////////////////////////////////////////
|
|
// $Id: pcivga.cc,v 1.4 2004-06-19 15:20:13 sshwarts Exp $
|
|
/////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Copyright (C) 2002,2003 Mike Nordell
|
|
//
|
|
// This library is free software; you can redistribute it and/or
|
|
// modify it under the terms of the GNU Lesser General Public
|
|
// License as published by the Free Software Foundation; either
|
|
// version 2 of the License, or (at your option) any later version.
|
|
//
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
// Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public
|
|
// License along with this library; if not, write to the Free Software
|
|
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
//
|
|
// Experimental PCI VGA adapter
|
|
//
|
|
|
|
// Note: This "driver" was created for the SOLE PURPOSE of getting BeOS
|
|
// to boot. It currently does NOTHING more than presenting a generic VGA
|
|
// device on the PCI bus. ALL gfx in/out-put is still handled by the VGA code.
|
|
// Furthermore, almost all of the PCI registers are currently acting like RAM.
|
|
|
|
|
|
// Define BX_PLUGGABLE in files that can be compiled into plugins. For
|
|
// platforms that require a special tag on exported symbols, BX_PLUGGABLE
|
|
// is used to know when we are exporting symbols and when we are importing.
|
|
#define BX_PLUGGABLE
|
|
|
|
#include "iodev.h"
|
|
#if BX_PCI_SUPPORT && BX_PCI_VGA_SUPPORT
|
|
|
|
#define LOG_THIS thePciVgaAdapter->
|
|
|
|
bx_pcivga_c* thePciVgaAdapter = 0;
|
|
|
|
int
|
|
libpcivga_LTX_plugin_init(plugin_t *plugin, plugintype_t type, int argc, char *argv[])
|
|
{
|
|
thePciVgaAdapter = new bx_pcivga_c ();
|
|
bx_devices.pluginPciVgaAdapter = thePciVgaAdapter;
|
|
BX_REGISTER_DEVICE_DEVMODEL(plugin, type, thePciVgaAdapter, BX_PLUGIN_PCIVGA);
|
|
return 0; // Success
|
|
}
|
|
|
|
void
|
|
libpcivga_LTX_plugin_fini(void)
|
|
{
|
|
}
|
|
|
|
|
|
bx_pcivga_c::bx_pcivga_c(void)
|
|
{
|
|
put("PCIVGA");
|
|
settype(PCIVGALOG);
|
|
}
|
|
|
|
bx_pcivga_c::~bx_pcivga_c(void)
|
|
{
|
|
// nothing for now
|
|
BX_DEBUG(("Exit."));
|
|
}
|
|
|
|
|
|
void
|
|
bx_pcivga_c::init(void)
|
|
{
|
|
// called once when bochs initializes
|
|
|
|
DEV_register_pci_handlers(this,
|
|
pci_read_handler,
|
|
pci_write_handler,
|
|
BX_PCI_DEVICE(2,0),
|
|
"Experimental PCI VGA");
|
|
|
|
for (unsigned i=0; i<256; i++) {
|
|
BX_PCIVGA_THIS s.pci_conf[i] = 0x0;
|
|
}
|
|
|
|
// readonly registers
|
|
static const struct init_vals_t {
|
|
unsigned addr;
|
|
unsigned char val;
|
|
} init_vals[] = {
|
|
// Note that the values for vendor and device id are selected at random!
|
|
// There might actually be "real" values for "experimental" vendor and
|
|
// device that should be used!
|
|
{ 0x00, 0x34 }, { 0x01, 0x12 }, // 0x1234 - experimental vendor
|
|
{ 0x02, 0x11 }, { 0x03, 0x11 }, // 0x1111 - experimental device
|
|
{ 0x0a, 0x00 }, // class_sub VGA controller
|
|
{ 0x0b, 0x03 }, // class_base display
|
|
{ 0x0e, 0x00 } // header_type_generic
|
|
};
|
|
for (unsigned i = 0; i < sizeof(init_vals) / sizeof(*init_vals); ++i) {
|
|
BX_PCIVGA_THIS s.pci_conf[init_vals[i].addr] = init_vals[i].val;
|
|
}
|
|
}
|
|
|
|
void
|
|
bx_pcivga_c::reset(unsigned type)
|
|
{
|
|
static const struct reset_vals_t {
|
|
unsigned addr;
|
|
unsigned char val;
|
|
} reset_vals[] = {
|
|
{ 0x04, 0x03 }, { 0x05, 0x00 }, // command_io + command_mem
|
|
{ 0x06, 0x00 }, { 0x07, 0x02 } // status_devsel_medium
|
|
};
|
|
for (unsigned i = 0; i < sizeof(reset_vals) / sizeof(*reset_vals); ++i) {
|
|
BX_PCIVGA_THIS s.pci_conf[reset_vals[i].addr] = reset_vals[i].val;
|
|
}
|
|
}
|
|
|
|
|
|
// static pci configuration space read callback handler
|
|
// redirects to non-static class handler to avoid virtual functions
|
|
|
|
Bit32u
|
|
bx_pcivga_c::pci_read_handler(void *this_ptr, Bit8u address, unsigned io_len)
|
|
{
|
|
#if !BX_USE_PCIVGA_SMF
|
|
bx_pcivga_c *class_ptr = (bx_pcivga_c *) this_ptr;
|
|
|
|
return class_ptr->pci_read(address, io_len);
|
|
}
|
|
|
|
|
|
Bit32u
|
|
bx_pcivga_c::pci_read(Bit8u address, unsigned io_len)
|
|
{
|
|
#else
|
|
UNUSED(this_ptr);
|
|
#endif // !BX_USE_PCIVGA_SMF
|
|
|
|
Bit32u value = 0;
|
|
|
|
if (io_len > 4 || io_len == 0) {
|
|
BX_DEBUG(("Experimental PCIVGA read register 0x%02x, len=%u !",
|
|
(unsigned) address, (unsigned) io_len));
|
|
return 0xffffffff;
|
|
}
|
|
|
|
const char* pszName = " ";
|
|
switch (address) {
|
|
case 0x00: if (io_len == 2) {
|
|
pszName = "(vendor id) ";
|
|
} else if (io_len == 4) {
|
|
pszName = "(vendor + device) ";
|
|
}
|
|
break;
|
|
case 0x04: if (io_len == 2) {
|
|
pszName = "(command) ";
|
|
} else if (io_len == 4) {
|
|
pszName = "(command+status) ";
|
|
}
|
|
break;
|
|
case 0x08: if (io_len == 1) {
|
|
pszName = "(revision id) ";
|
|
} else if (io_len == 4) {
|
|
pszName = "(rev.+class code) ";
|
|
}
|
|
break;
|
|
case 0x0c: pszName = "(cache line size) "; break;
|
|
case 0x28: pszName = "(cardbus cis) "; break;
|
|
case 0x2c: pszName = "(subsys. vendor+) "; break;
|
|
case 0x30: pszName = "(rom base) "; break;
|
|
case 0x3c: pszName = "(interrupt line+) "; break;
|
|
case 0x3d: pszName = "(interrupt pin) "; break;
|
|
}
|
|
|
|
// This odd code is to display only what bytes actually were read.
|
|
char szTmp[9];
|
|
char szTmp2[3];
|
|
szTmp[0] = '\0';
|
|
szTmp2[0] = '\0';
|
|
for (unsigned i=0; i<io_len; i++) {
|
|
value |= (BX_PCIVGA_THIS s.pci_conf[address+i] << (i*8));
|
|
|
|
sprintf(szTmp2, "%02x", (BX_PCIVGA_THIS s.pci_conf[address+i]));
|
|
strrev(szTmp2);
|
|
strcat(szTmp, szTmp2);
|
|
}
|
|
strrev(szTmp);
|
|
BX_DEBUG(("Experimental PCIVGA read register 0x%02x %svalue 0x%s",
|
|
address, pszName, szTmp));
|
|
return value;
|
|
}
|
|
|
|
|
|
// static pci configuration space write callback handler
|
|
// redirects to non-static class handler to avoid virtual functions
|
|
|
|
void
|
|
bx_pcivga_c::pci_write_handler(void *this_ptr, Bit8u address, Bit32u value, unsigned io_len)
|
|
{
|
|
#if !BX_USE_PCIVGA_SMF
|
|
bx_pcivga_c *class_ptr = (bx_pcivga_c *) this_ptr;
|
|
|
|
class_ptr->pci_write(address, value, io_len);
|
|
}
|
|
|
|
void
|
|
bx_pcivga_c::pci_write(Bit8u address, Bit32u value, unsigned io_len)
|
|
{
|
|
#else
|
|
UNUSED(this_ptr);
|
|
#endif // !BX_USE_PCIVGA_SMF
|
|
|
|
if (io_len > 4 || io_len == 0) {
|
|
BX_DEBUG(("Experimental PCIVGA write register 0x%02x, len=%u !",
|
|
(unsigned) address, (unsigned) io_len));
|
|
return;
|
|
}
|
|
|
|
// This odd code is to display only what bytes actually were written.
|
|
char szTmp[9];
|
|
char szTmp2[3];
|
|
szTmp[0] = '\0';
|
|
szTmp2[0] = '\0';
|
|
for (unsigned i=0; i<io_len; i++) {
|
|
const Bit8u value8 = (value >> (i*8)) & 0xFF;
|
|
switch (address+i) {
|
|
case 0x30: // Oh, no, you're not writing to rom_base!
|
|
case 0x31: //
|
|
case 0x32: //
|
|
case 0x33: //
|
|
case 0x04: // disallowing write to command
|
|
case 0x06: // disallowing write to status lo-byte (is that expected?)
|
|
strcpy(szTmp2, "..");
|
|
break;
|
|
default:
|
|
BX_PCIVGA_THIS s.pci_conf[address+i] = value8;
|
|
sprintf(szTmp2, "%02x", value8);
|
|
}
|
|
strrev(szTmp2);
|
|
strcat(szTmp, szTmp2);
|
|
}
|
|
strrev(szTmp);
|
|
BX_DEBUG(("Experimental PCIVGA write register 0x%02x value 0x%s", address, szTmp));
|
|
}
|
|
|
|
#endif // BX_PCI_SUPPORT && BX_PCI_VGA_SUPPORT
|