diff options
Diffstat (limited to 'src/southbridge/nvidia/mcp55/smbus.c')
| -rw-r--r-- | src/southbridge/nvidia/mcp55/smbus.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/southbridge/nvidia/mcp55/smbus.c b/src/southbridge/nvidia/mcp55/smbus.c new file mode 100644 index 0000000000..ceb5f16df9 --- /dev/null +++ b/src/southbridge/nvidia/mcp55/smbus.c @@ -0,0 +1,141 @@ +/* + * 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, +}; + |