| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2008 Arastra, Inc. |
| * |
| * 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. |
| * |
| */ |
| |
| #include <device/device.h> |
| #include <device/path.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <device/pci_ops.h> |
| #include <device/smbus.h> |
| #include <arch/io.h> |
| #include "i3100.h" |
| #include "smbus.h" |
| |
| static int lsmbus_read_byte(device_t dev, u8 address) |
| { |
| u16 device; |
| struct resource *res; |
| struct bus *pbus; |
| |
| device = dev->path.i2c.device; |
| pbus = get_pbus_smbus(dev); |
| res = find_resource(pbus->dev, 0x20); |
| |
| return do_smbus_read_byte(res->base, device, address); |
| } |
| |
| static int lsmbus_write_byte(device_t dev, u8 address, u8 byte) |
| { |
| u16 device; |
| struct resource *res; |
| struct bus *pbus; |
| |
| device = dev->path.i2c.device; |
| pbus = get_pbus_smbus(dev); |
| res = find_resource(pbus->dev, 0x20); |
| |
| return do_smbus_write_byte(res->base, device, address, byte); |
| } |
| |
| static struct smbus_bus_operations lops_smbus_bus = { |
| .read_byte = lsmbus_read_byte, |
| .write_byte = lsmbus_write_byte, |
| }; |
| |
| static void smbus_set_subsystem(device_t dev, unsigned vendor, unsigned device) |
| { |
| pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, |
| ((device & 0xffff) << 16) | (vendor & 0xffff)); |
| } |
| |
| static struct pci_operations lops_pci = { |
| .set_subsystem = &smbus_set_subsystem, |
| }; |
| |
| static 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_smbus, |
| .enable = i3100_enable, |
| .ops_pci = &lops_pci, |
| .ops_smbus_bus = &lops_smbus_bus, |
| }; |
| |
| static const struct pci_driver smbus_driver __pci_driver = { |
| .ops = &smbus_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_3100_SMB, |
| }; |
| |
| static const struct pci_driver smbus_driver_ep80579 __pci_driver = { |
| .ops = &smbus_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_EP80579_SMB, |
| }; |