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/////////////////////////////////////////////////////////////////////////
// $Id: pci2isa.cc,v 1.10 2003/07/31 19:51:42 vruppert Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002 MandrakeSoft S.A.
//
// MandrakeSoft S.A.
// 43, rue d'Aboukir
// 75002 Paris - France
// http://www.linux-mandrake.com/
// http://www.mandrakesoft.com/
//
// 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
//
// i440FX Support - PCI-to-ISA bridge (PIIX3)
//
// 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 "bochs.h"
#if BX_PCI_SUPPORT
#define LOG_THIS thePci2IsaBridge->
bx_pci2isa_c *thePci2IsaBridge = NULL;
int
libpci2isa_LTX_plugin_init(plugin_t *plugin, plugintype_t type, int argc, char *argv[])
{
thePci2IsaBridge = new bx_pci2isa_c ();
bx_devices.pluginPci2IsaBridge = thePci2IsaBridge;
BX_REGISTER_DEVICE_DEVMODEL(plugin, type, thePci2IsaBridge, BX_PLUGIN_PCI2ISA);
return(0); // Success
}
void
libpci2isa_LTX_plugin_fini(void)
{
}
bx_pci2isa_c::bx_pci2isa_c(void)
{
put("P2I");
settype(PCI2ISALOG);
}
bx_pci2isa_c::~bx_pci2isa_c(void)
{
// nothing for now
BX_DEBUG(("Exit."));
}
void
bx_pci2isa_c::init(void)
{
// called once when bochs initializes
DEV_register_pci_handlers(this, pci_read_handler, pci_write_handler,
BX_PCI_DEVICE(1,0), "PIIX3 PCI-to-ISA bridge");
DEV_register_iowrite_handler(this, write_handler, 0x00B2, "PIIX3 PCI-to-ISA bridge", 1);
DEV_register_iowrite_handler(this, write_handler, 0x00B3, "PIIX3 PCI-to-ISA bridge", 1);
DEV_register_iowrite_handler(this, write_handler, 0x04D0, "PIIX3 PCI-to-ISA bridge", 1);
DEV_register_iowrite_handler(this, write_handler, 0x04D1, "PIIX3 PCI-to-ISA bridge", 1);
DEV_register_iowrite_handler(this, write_handler, 0x0CF9, "PIIX3 PCI-to-ISA bridge", 1);
DEV_register_ioread_handler(this, read_handler, 0x00B2, "PIIX3 PCI-to-ISA bridge", 1);
DEV_register_ioread_handler(this, read_handler, 0x00B3, "PIIX3 PCI-to-ISA bridge", 1);
DEV_register_ioread_handler(this, read_handler, 0x04D0, "PIIX3 PCI-to-ISA bridge", 1);
DEV_register_ioread_handler(this, read_handler, 0x04D1, "PIIX3 PCI-to-ISA bridge", 1);
DEV_register_ioread_handler(this, read_handler, 0x0CF9, "PIIX3 PCI-to-ISA bridge", 1);
for (unsigned i=0; i<256; i++)
BX_P2I_THIS s.pci_conf[i] = 0x0;
// readonly registers
BX_P2I_THIS s.pci_conf[0x00] = 0x86;
BX_P2I_THIS s.pci_conf[0x01] = 0x80;
BX_P2I_THIS s.pci_conf[0x02] = 0x00;
BX_P2I_THIS s.pci_conf[0x03] = 0x70;
BX_P2I_THIS s.pci_conf[0x0a] = 0x01;
BX_P2I_THIS s.pci_conf[0x0b] = 0x06;
BX_P2I_THIS s.pci_conf[0x0e] = 0x80;
}
void
bx_pci2isa_c::reset(unsigned type)
{
BX_P2I_THIS s.pci_conf[0x04] = 0x07;
BX_P2I_THIS s.pci_conf[0x05] = 0x00;
BX_P2I_THIS s.pci_conf[0x06] = 0x00;
BX_P2I_THIS s.pci_conf[0x07] = 0x02;
BX_P2I_THIS s.pci_conf[0x4c] = 0x4d;
BX_P2I_THIS s.pci_conf[0x4e] = 0x03;
BX_P2I_THIS s.pci_conf[0x4f] = 0x00;
BX_P2I_THIS s.pci_conf[0x60] = 0x80;
BX_P2I_THIS s.pci_conf[0x69] = 0x02;
BX_P2I_THIS s.pci_conf[0x70] = 0x80;
BX_P2I_THIS s.pci_conf[0x76] = 0x0c;
BX_P2I_THIS s.pci_conf[0x77] = 0x0c;
BX_P2I_THIS s.pci_conf[0x78] = 0x02;
BX_P2I_THIS s.pci_conf[0x79] = 0x00;
BX_P2I_THIS s.pci_conf[0x80] = 0x00;
BX_P2I_THIS s.pci_conf[0x82] = 0x00;
BX_P2I_THIS s.pci_conf[0xa0] = 0x08;
BX_P2I_THIS s.pci_conf[0xa0] = 0x08;
BX_P2I_THIS s.pci_conf[0xa2] = 0x00;
BX_P2I_THIS s.pci_conf[0xa3] = 0x00;
BX_P2I_THIS s.pci_conf[0xa4] = 0x00;
BX_P2I_THIS s.pci_conf[0xa5] = 0x00;
BX_P2I_THIS s.pci_conf[0xa6] = 0x00;
BX_P2I_THIS s.pci_conf[0xa7] = 0x00;
BX_P2I_THIS s.pci_conf[0xa8] = 0x0f;
BX_P2I_THIS s.pci_conf[0xaa] = 0x00;
BX_P2I_THIS s.pci_conf[0xab] = 0x00;
BX_P2I_THIS s.pci_conf[0xac] = 0x00;
BX_P2I_THIS s.pci_conf[0xae] = 0x00;
BX_P2I_THIS s.elcr1 = 0x00;
BX_P2I_THIS s.elcr2 = 0x00;
}
// static IO port read callback handler
// redirects to non-static class handler to avoid virtual functions
Bit32u
bx_pci2isa_c::read_handler(void *this_ptr, Bit32u address, unsigned io_len)
{
#if !BX_USE_P2I_SMF
bx_pci2isa_c *class_ptr = (bx_pci2isa_c *) this_ptr;
return( class_ptr->read(address, io_len) );
}
Bit32u
bx_pci2isa_c::read(Bit32u address, unsigned io_len)
{
#else
UNUSED(this_ptr);
#endif // !BX_USE_P2I_SMF
switch (address) {
case 0x00b2:
BX_ERROR(("read: APM command register not supported yet"));
break;
case 0x00b3:
BX_ERROR(("read: APM status register not supported yet"));
break;
case 0x04d0:
return(BX_P2I_THIS s.elcr1);
break;
case 0x04d1:
return(BX_P2I_THIS s.elcr2);
break;
case 0x0cf9:
BX_ERROR(("read: CPU reset register not supported yet"));
break;
}
return(0xffffffff);
}
// static IO port write callback handler
// redirects to non-static class handler to avoid virtual functions
void
bx_pci2isa_c::write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len)
{
#if !BX_USE_P2I_SMF
bx_pci2isa_c *class_ptr = (bx_pci2isa_c *) this_ptr;
class_ptr->write(address, value, io_len);
}
void
bx_pci2isa_c::write(Bit32u address, Bit32u value, unsigned io_len)
{
#else
UNUSED(this_ptr);
#endif // !BX_USE_P2I_SMF
switch (address) {
case 0x00b2:
BX_ERROR(("write: APM command register not supported yet"));
break;
case 0x00b3:
BX_ERROR(("write: APM status register not supported yet"));
break;
case 0x04d0:
BX_P2I_THIS s.elcr1 = (value & 0xf8);
BX_ERROR(("write: ELCR1 changes have no effect yet"));
break;
case 0x04d1:
BX_P2I_THIS s.elcr2 = (value & 0xde);
BX_ERROR(("write: ELCR2 changes have no effect yet"));
break;
case 0x0cf9:
BX_ERROR(("write: CPU reset register not supported yet"));
break;
}
}
// static pci configuration space read callback handler
// redirects to non-static class handler to avoid virtual functions
Bit32u
bx_pci2isa_c::pci_read_handler(void *this_ptr, Bit8u address, unsigned io_len)
{
#if !BX_USE_P2I_SMF
bx_pci2isa_c *class_ptr = (bx_pci2isa_c *) this_ptr;
return( class_ptr->pci_read(address, io_len) );
}
Bit32u
bx_pci2isa_c::pci_read(Bit8u address, unsigned io_len)
{
#else
UNUSED(this_ptr);
#endif // !BX_USE_P2I_SMF
Bit32u value = 0;
if (io_len <= 4) {
for (unsigned i=0; i<io_len; i++) {
value |= (BX_P2I_THIS s.pci_conf[address+i] << (i*8));
}
BX_DEBUG(("PIIX3 PCI-to-ISA read register 0x%02x value 0x%08x", address, value));
return value;
}
else
return(0xffffffff);
}
// static pci configuration space write callback handler
// redirects to non-static class handler to avoid virtual functions
void
bx_pci2isa_c::pci_write_handler(void *this_ptr, Bit8u address, Bit32u value, unsigned io_len)
{
#if !BX_USE_P2I_SMF
bx_pci2isa_c *class_ptr = (bx_pci2isa_c *) this_ptr;
class_ptr->pci_write(address, value, io_len);
}
void
bx_pci2isa_c::pci_write(Bit8u address, Bit32u value, unsigned io_len)
{
#else
UNUSED(this_ptr);
#endif // !BX_USE_P2I_SMF
Bit8u value8;
if (io_len <= 4) {
for (unsigned i=0; i<io_len; i++) {
value8 = (value >> (i*8)) & 0xFF;
switch (address+i) {
case 0x06:
break;
default:
BX_P2I_THIS s.pci_conf[address+i] = value8;
BX_DEBUG(("PIIX3 PCI-to-ISA write register 0x%02x value 0x%02x", address,
value8));
}
}
}
}
#endif /* BX_PCI_SUPPORT */
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