summaryrefslogtreecommitdiff
path: root/src/southbridge/intel/i3100
diff options
context:
space:
mode:
authorSven Schnelle <svens@stackframe.org>2012-06-20 16:25:55 +0200
committerSven Schnelle <svens@stackframe.org>2012-06-21 08:47:42 +0200
commitdab6bfe97d3588b73f7a3f7b9411cfa0e221f916 (patch)
tree57628bff63c33ea60e2b521155245507527f18e1 /src/southbridge/intel/i3100
parent2e33a65a8c115a46fdf6101ac57fd89602d1b264 (diff)
downloadcoreboot-dab6bfe97d3588b73f7a3f7b9411cfa0e221f916.tar.xz
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>
Diffstat (limited to 'src/southbridge/intel/i3100')
-rw-r--r--src/southbridge/intel/i3100/Makefile.inc1
-rw-r--r--src/southbridge/intel/i3100/ioapic.c61
2 files changed, 62 insertions, 0 deletions
diff --git a/src/southbridge/intel/i3100/Makefile.inc b/src/southbridge/intel/i3100/Makefile.inc
index fa6caf1b52..ddcb0f9181 100644
--- a/src/southbridge/intel/i3100/Makefile.inc
+++ b/src/southbridge/intel/i3100/Makefile.inc
@@ -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
diff --git a/src/southbridge/intel/i3100/ioapic.c b/src/southbridge/intel/i3100/ioapic.c
new file mode 100644
index 0000000000..446be9e638
--- /dev/null
+++ b/src/southbridge/intel/i3100/ioapic.c
@@ -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,
+};
+