1 files changed, 109 insertions, 0 deletions
diff --git a/src/southbridge/intel/i82801ax/i82801ax_smbus.c b/src/southbridge/intel/i82801ax/i82801ax_smbus.c
new file mode 100644
index 0000000000..739cfdb988
--- /dev/null
+++ b/src/southbridge/intel/i82801ax/i82801ax_smbus.c
@@ -0,0 +1,109 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2005 Yinghai Lu <yinghailu@gmail.com>
+ *
+ * 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
+ */
+
+/* TODO: Check datasheets if this will work for all ICH* southbridges. */
+
+#include <stdint.h>
+#include <smbus.h>
+#include <pci.h>
+#include <arch/io.h>
+#include "i82801ax.h"
+#include "i82801_smbus.h"
+
+static int smbus_read_byte(struct bus *bus, device_t dev, u8 address)
+{
+	unsigned device;	/* TODO: u16? */
+	struct resource *res;
+
+	device = dev->path.i2c.device;
+	res = find_resource(bus->dev, 0x20);
+
+	return do_smbus_read_byte(res->base, device, address);
+}
+
+static struct smbus_bus_operations lops_smbus_bus = {
+	.read_byte	= smbus_read_byte,
+};
+
+static const struct device_operations smbus_ops = {
+	.read_resources		= pci_dev_read_resources,
+	.set_resources		= pci_dev_set_resources,
+	.enable_resources	= pci_dev_enable_resources,
+	.init			= 0,
+	.scan_bus		= scan_static_bus,
+	.enable			= i82801er_enable,
+	.ops_smbus_bus		= &lops_smbus_bus,
+};
+
+/* 82801AA (ICH) */
+static const struct pci_driver i82801aa_smb __pci_driver = {
+	.ops	= &smbus_ops,
+	.vendor	= PCI_VENDOR_ID_INTEL,
+	.device	= PCI_DEVICE_ID_INTEL_82801AA_SMB,
+};
+
+/* 82801AB (ICH0) */
+static const struct pci_driver i82801ab_smb __pci_driver = {
+	.ops	= &smbus_ops,
+	.vendor	= PCI_VENDOR_ID_INTEL,
+	.device	= PCI_DEVICE_ID_INTEL_82801AB_SMB,
+};
+
+/* 82801BA/BAM (ICH2/ICH2-M) */
+static const struct pci_driver i82801ba_smb __pci_driver = {
+	.ops	= &smbus_ops,
+	.vendor	= PCI_VENDOR_ID_INTEL,
+	.device	= PCI_DEVICE_ID_INTEL_82801BA_SMB,
+};
+
+/* 82801CA/CAM (ICH3-S/ICH3-M) */
+static const struct pci_driver i82801ca_smb __pci_driver = {
+	.ops	= &smbus_ops,
+	.vendor	= PCI_VENDOR_ID_INTEL,
+	.device	= PCI_DEVICE_ID_INTEL_82801CA_SMB,
+};
+
+/* 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) */
+static const struct pci_driver i82801db_smb __pci_driver = {
+	.ops	= &smbus_ops,
+	.vendor	= PCI_VENDOR_ID_INTEL,
+	.device	= PCI_DEVICE_ID_INTEL_82801DB_SMB,
+};
+
+/* 82801EB/ER (ICH5/ICH5R) */
+static const struct pci_driver i82801eb_smb __pci_driver = {
+	.ops	= &smbus_ops,
+	.vendor	= PCI_VENDOR_ID_INTEL,
+	.device	= PCI_DEVICE_ID_INTEL_82801EB_SMB,
+};
+
+/* 82801FB/FR/FW/FRW/FBM (ICH6/ICH6R/ICH6W/ICH6RW/ICH6-M) */
+static const struct pci_driver i82801fb_smb __pci_driver = {
+	.ops	= &smbus_ops,
+	.vendor	= PCI_VENDOR_ID_INTEL,
+	.device	= PCI_DEVICE_ID_INTEL_82801FB_SMB,
+};
+
+/* 82801E (C-ICH) */
+static const struct pci_driver i82801e_smb __pci_driver = {
+	.ops	= &smbus_ops,
+	.vendor	= PCI_VENDOR_ID_INTEL,
+	.device	= PCI_DEVICE_ID_INTEL_82801E_SMB,
+};