diff options
Diffstat (limited to 'src/southbridge/intel/i3100/smbus.c')
-rw-r--r-- | src/southbridge/intel/i3100/smbus.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/southbridge/intel/i3100/smbus.c b/src/southbridge/intel/i3100/smbus.c new file mode 100644 index 0000000000..23602acb21 --- /dev/null +++ b/src/southbridge/intel/i3100/smbus.c @@ -0,0 +1,79 @@ +/* + * 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. + * + * 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 <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 struct smbus_bus_operations lops_smbus_bus = { + .read_byte = lsmbus_read_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_static_bus, + .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, +}; |