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i3100: Enable second IOAPIC for PCI-X 

i3100/i5000 have a second IOAPIC which handles IRQs for PCI-X.
Add code to enable it.

Change-Id: Ib447628f501b152c8adc9c7c89bd09b5615b9e5a
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1118
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Sven Schnelle 2012-06-20 16:25:55 +02:00
parent 2e33a65a8c
commit dab6bfe97d
2 changed files with 62 additions and 0 deletions
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1
src/southbridge/intel/i3100/Makefile.inc
View File

@ -5,5 +5,6 @@ driver-y += sata.c
driver-y += ehci.c
driver-y += smbus.c
driver-y += pci.c
driver-y += ioapic.c
ramstage-y += reset.c
ramstage-y += pciexp_portb.c

61
src/southbridge/intel/i3100/ioapic.c Normal file
View File

@ -0,0 +1,61 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 Sven Schnelle <svens@stackframe.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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 <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include "i3100.h"
static void read_resources(struct device *dev)
{
u32 tmp;
/* Enable IO(X)APIC config space */
tmp = pci_read_config16(dev, 0x40);
pci_write_config16(dev, 0x40, tmp & ~(1 << 13));
/* Enable I/O APIC space at 0xfec80000 */
dev->path.pci.devfn |= 1;
pci_write_config16(dev, 0x04, 0x06);
pci_write_config32(dev, 0x10, 0xfec80000);
dev->path.pci.devfn &= ~1;
pci_write_config16(dev, 0x40, tmp);
pci_bus_read_resources(dev);
}
static struct device_operations pci_ops = {
.read_resources = read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_bus_enable_resources,
.scan_bus = pci_scan_bridge,
.reset_bus = pci_bus_reset,
.ops_pci = 0,
};
static const struct pci_driver pci_driver0 __pci_driver = {
.ops = &pci_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.device = 0x3500,
};