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/*
* This file is part of the LinuxBIOS project.
*
* Copyright (C) 2007 Uwe Hermann <uwe@hermann-uwe.de>
*
* 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
*/
#include <stdint.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <pc80/isa-dma.h>
#include <pc80/mc146818rtc.h>
#include "i82371eb.h"
static void isa_init(struct device *dev)
{
u16 reg16;
u32 reg32;
/* Initialize the real time clock (RTC). */
rtc_init(0);
/* Enable access to all BIOS regions. */
reg16 = pci_read_config16(dev, XBCS);
reg16 |= LOWER_BIOS_ENABLE;
reg16 |= EXT_BIOS_ENABLE;
reg16 |= EXT_BIOS_ENABLE_1MB;
reg16 &= ~(WRITE_PROTECT_ENABLE); /* Disable ROM write access. */
pci_write_config16(dev, XBCS, reg16);
/*
* The PIIX4 can support the full ISA bus, or the Extended I/O (EIO)
* bus, which is a subset of ISA. We select the full ISA bus here.
*/
reg32 = pci_read_config32(dev, GENCFG);
reg32 |= ISA; /* Select ISA, not EIO. */
pci_write_config16(dev, GENCFG, reg32);
/* Initialize ISA DMA. */
isa_dma_init();
}
static const struct device_operations isa_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = isa_init,
.scan_bus = scan_static_bus, /* TODO: Needed? */
.enable = 0,
.ops_pci = 0, /* No subsystem IDs on 82371EB! */
};
static const struct pci_driver isa_driver __pci_driver = {
.ops = &isa_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.device = PCI_DEVICE_ID_INTEL_82371AB_ISA,
};
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