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/*
* This software and ancillary information (herein called SOFTWARE )
* called LinuxBIOS is made available under the terms described
* here. The SOFTWARE has been approved for release with associated
* LA-CC Number 00-34 . Unless otherwise indicated, this SOFTWARE has
* been authored by an employee or employees of the University of
* California, operator of the Los Alamos National Laboratory under
* Contract No. W-7405-ENG-36 with the U.S. Department of Energy. The
* U.S. Government has rights to use, reproduce, and distribute this
* SOFTWARE. The public may copy, distribute, prepare derivative works
* and publicly display this SOFTWARE without charge, provided that this
* Notice and any statement of authorship are reproduced on all copies.
* Neither the Government nor the University makes any warranty, express
* or implied, or assumes any liability or responsibility for the use of
* this SOFTWARE. If SOFTWARE is modified to produce derivative works,
* such modified SOFTWARE should be clearly marked, so as not to confuse
* it with the version available from LANL.
*/
/*
* This file is part of the coreboot project.
*
* (c) Copyright 2000, Ron Minnich, Advanced Computing Lab, LANL
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef COREBOOT_V2
#include <console/console.h>
#else
#include <console.h>
#endif
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <x86emu/x86emu.h>
#include "pcibios.h"
int pcibios_handler(void)
{
int ret = 0;
struct device *dev = 0;
switch (X86_AX) {
case PCI_BIOS_PRESENT:
X86_AH = 0x00; /* no config space/special cycle support */
X86_AL = 0x01; /* config mechanism 1 */
X86_EDX = 'P' | 'C' << 8 | 'I' << 16 | ' ' << 24;
X86_EBX = 0x0210; /* Version 2.10 */
X86_ECX = 0xFF00; /* FixME: Max bus number */
X86_EFLAGS &= ~FB_CF; /* clear carry flag */
ret = 1;
break;
case FIND_PCI_DEVICE:
/* FixME: support SI != 0 */
#ifdef COREBOOT_V2
dev = dev_find_device(X86_DX, X86_CX, dev);
#else
dev = dev_find_pci_device(X86_DX, X86_CX, dev);
#endif
if (dev != 0) {
X86_BH = dev->bus->secondary;
X86_BL = dev->path.pci.devfn;
X86_AH = SUCCESSFUL;
X86_EFLAGS &= ~FB_CF; /* clear carry flag */
ret = 1;
} else {
X86_AH = DEVICE_NOT_FOUND;
X86_EFLAGS |= FB_CF; /* set carry flag */
ret = 0;
}
break;
case FIND_PCI_CLASS_CODE:
/* FixME: support SI != 0 */
dev = dev_find_class(X86_ECX, dev);
if (dev != 0) {
X86_BH = dev->bus->secondary;
X86_BL = dev->path.pci.devfn;
X86_AH = SUCCESSFUL;
X86_EFLAGS &= ~FB_CF; /* clear carry flag */
ret = 1;
} else {
X86_AH = DEVICE_NOT_FOUND;
X86_EFLAGS |= FB_CF; /* set carry flag */
ret = 0;
}
break;
case READ_CONFIG_BYTE:
dev = dev_find_slot(X86_BH, X86_BL);
if (dev != 0) {
X86_CL = pci_read_config8(dev, X86_DI);
X86_AH = SUCCESSFUL;
X86_EFLAGS &= ~FB_CF; /* clear carry flag */
ret = 1;
} else {
X86_AH = DEVICE_NOT_FOUND;
X86_EFLAGS |= FB_CF; /* set carry flag */
ret = 0;
}
break;
case READ_CONFIG_WORD:
dev = dev_find_slot(X86_BH, X86_BL);
if (dev != 0) {
X86_CX = pci_read_config16(dev, X86_DI);
X86_AH = SUCCESSFUL;
X86_EFLAGS &= ~FB_CF; /* clear carry flag */
ret = 1;
} else {
X86_AH = DEVICE_NOT_FOUND;
X86_EFLAGS |= FB_CF; /* set carry flag */
ret = 0;
}
break;
case READ_CONFIG_DWORD:
dev = dev_find_slot(X86_BH, X86_BL);
if (dev != 0) {
X86_ECX = pci_read_config32(dev, X86_DI);
X86_AH = SUCCESSFUL;
X86_EFLAGS &= ~FB_CF; /* clear carry flag */
ret = 1;
} else {
X86_AH = DEVICE_NOT_FOUND;
X86_EFLAGS |= FB_CF; /* set carry flag */
ret = 0;
}
break;
case WRITE_CONFIG_BYTE:
dev = dev_find_slot(X86_BH, X86_BL);
if (dev != 0) {
pci_write_config8(dev, X86_DI, X86_CL);
X86_AH = SUCCESSFUL;
X86_EFLAGS &= ~FB_CF; /* clear carry flag */
ret = 1;
} else {
X86_AH = DEVICE_NOT_FOUND;
X86_EFLAGS |= FB_CF; /* set carry flag */
ret = 0;
}
break;
case WRITE_CONFIG_WORD:
dev = dev_find_slot(X86_BH, X86_BL);
if (dev != 0) {
pci_write_config16(dev, X86_DI, X86_CX);
X86_AH = SUCCESSFUL;
X86_EFLAGS &= ~FB_CF; /* clear carry flag */
ret = 1;
} else {
X86_AH = DEVICE_NOT_FOUND;
X86_EFLAGS |= FB_CF; /* set carry flag */
ret = 0;
}
break;
case WRITE_CONFIG_DWORD:
dev = dev_find_slot(X86_BH, X86_BL);
if (dev != 0) {
pci_write_config16(dev, X86_DI, X86_ECX);
X86_AH = SUCCESSFUL;
X86_EFLAGS &= ~FB_CF; /* clear carry flag */
ret = 1;
} else {
X86_AH = DEVICE_NOT_FOUND;
X86_EFLAGS |= FB_CF; /* set carry flag */
ret = 0;
}
break;
default:
X86_AH = FUNC_NOT_SUPPORTED;
X86_EFLAGS |= FB_CF;
break;
}
return ret;
}
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