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Diffstat (limited to 'src/southbridge/nvidia/mcp55/smbus.c')
-rw-r--r--src/southbridge/nvidia/mcp55/smbus.c141
1 files changed, 141 insertions, 0 deletions
diff --git a/src/southbridge/nvidia/mcp55/smbus.c b/src/southbridge/nvidia/mcp55/smbus.c
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+++ b/src/southbridge/nvidia/mcp55/smbus.c
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+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2004 Tyan Computer
+ * Written by Yinghai Lu <yhlu@tyan.com> for Tyan Computer.
+ * Copyright (C) 2006,2007 AMD
+ * Written by Yinghai Lu <yinghai.lu@amd.com> for AMD.
+ *
+ * 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 <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include <device/smbus.h>
+#include <bitops.h>
+#include <arch/io.h>
+#include "mcp55.h"
+#include "smbus.h"
+
+static int lsmbus_recv_byte(device_t dev)
+{
+ unsigned device;
+ struct resource *res;
+ struct bus *pbus;
+
+ device = dev->path.i2c.device;
+ pbus = get_pbus_smbus(dev);
+
+ res = find_resource(pbus->dev, 0x20 + (pbus->link_num * 4));
+
+ return do_smbus_recv_byte(res->base, device);
+}
+
+static int lsmbus_send_byte(device_t dev, uint8_t val)
+{
+ unsigned device;
+ struct resource *res;
+ struct bus *pbus;
+
+ device = dev->path.i2c.device;
+ pbus = get_pbus_smbus(dev);
+
+ res = find_resource(pbus->dev, 0x20 + (pbus->link_num * 4));
+
+ return do_smbus_send_byte(res->base, device, val);
+}
+
+static int lsmbus_read_byte(device_t dev, uint8_t address)
+{
+ unsigned device;
+ struct resource *res;
+ struct bus *pbus;
+
+ device = dev->path.i2c.device;
+ pbus = get_pbus_smbus(dev);
+
+ res = find_resource(pbus->dev, 0x20 + (pbus->link_num * 4));
+
+ return do_smbus_read_byte(res->base, device, address);
+}
+
+static int lsmbus_write_byte(device_t dev, uint8_t address, uint8_t val)
+{
+ unsigned device;
+ struct resource *res;
+ struct bus *pbus;
+
+ device = dev->path.i2c.device;
+ pbus = get_pbus_smbus(dev);
+
+ res = find_resource(pbus->dev, 0x20 + (pbus->link_num * 4));
+
+ return do_smbus_write_byte(res->base, device, address, val);
+}
+static struct smbus_bus_operations lops_smbus_bus = {
+ .recv_byte = lsmbus_recv_byte,
+ .send_byte = lsmbus_send_byte,
+ .read_byte = lsmbus_read_byte,
+ .write_byte = lsmbus_write_byte,
+};
+
+#if CONFIG_GENERATE_ACPI_TABLES == 1
+unsigned pm_base;
+#endif
+
+static void mcp55_sm_read_resources(device_t dev)
+{
+ unsigned long index;
+
+ /* Get the normal pci resources of this device */
+ pci_dev_read_resources(dev);
+
+ for (index = 0x60; index <= 0x68; index+=4) { // We got another 3.
+ pci_get_resource(dev, index);
+ }
+ compact_resources(dev);
+}
+
+static void mcp55_sm_init(device_t dev)
+{
+#if CONFIG_GENERATE_ACPI_TABLES == 1
+ struct resource *res;
+
+ res = find_resource(dev, 0x60);
+
+ if (res)
+ pm_base = res->base;
+#endif
+}
+
+static struct device_operations smbus_ops = {
+ .read_resources = mcp55_sm_read_resources,
+ .set_resources = pci_dev_set_resources,
+ .enable_resources = pci_dev_enable_resources,
+ .init = mcp55_sm_init,
+ .scan_bus = scan_static_bus,
+// .enable = mcp55_enable,
+ .ops_pci = &mcp55_pci_ops,
+ .ops_smbus_bus = &lops_smbus_bus,
+};
+static const struct pci_driver smbus_driver __pci_driver = {
+ .ops = &smbus_ops,
+ .vendor = PCI_VENDOR_ID_NVIDIA,
+ .device = PCI_DEVICE_ID_NVIDIA_MCP55_SM2,
+};
+