1cd8703b3f
Change-Id: I8578cf365addc47550e27c9ebed08de340d70ede Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/33531 Reviewed-by: Patrick Georgi <pgeorgi@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
112 lines
3 KiB
C
112 lines
3 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2008-2009 coresystems GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of
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* the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <device/device.h>
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#include <device/path.h>
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#include <device/smbus.h>
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#include <device/pci.h>
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#include <device/pci_ids.h>
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#include <southbridge/intel/common/smbus.h>
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#include "i82801gx.h"
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static int lsmbus_read_byte(struct device *dev, u8 address)
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{
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u16 device;
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struct resource *res;
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struct bus *pbus;
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device = dev->path.i2c.device;
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pbus = get_pbus_smbus(dev);
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res = find_resource(pbus->dev, 0x20);
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return do_smbus_read_byte(res->base, device, address);
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}
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static int lsmbus_write_byte(struct device *dev, u8 address, u8 data)
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{
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u16 device;
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struct resource *res;
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struct bus *pbus;
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device = dev->path.i2c.device;
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pbus = get_pbus_smbus(dev);
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res = find_resource(pbus->dev, 0x20);
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return do_smbus_write_byte(res->base, device, address, data);
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}
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static int lsmbus_block_write(struct device *dev, u8 cmd, u8 bytes,
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const u8 *buf)
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{
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u16 device;
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struct resource *res;
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struct bus *pbus;
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device = dev->path.i2c.device;
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pbus = get_pbus_smbus(dev);
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res = find_resource(pbus->dev, 0x20);
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return do_smbus_block_write(res->base, device, cmd, bytes, buf);
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}
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static int lsmbus_block_read(struct device *dev, u8 cmd, u8 bytes, u8 *buf)
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{
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u16 device;
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struct resource *res;
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struct bus *pbus;
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device = dev->path.i2c.device;
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pbus = get_pbus_smbus(dev);
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res = find_resource(pbus->dev, 0x20);
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return do_smbus_block_read(res->base, device, cmd, bytes, buf);
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}
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static struct smbus_bus_operations lops_smbus_bus = {
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.read_byte = lsmbus_read_byte,
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.write_byte = lsmbus_write_byte,
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.block_read = lsmbus_block_read,
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.block_write = lsmbus_block_write,
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};
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static struct pci_operations smbus_pci_ops = {
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.set_subsystem = pci_dev_set_subsystem,
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};
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static void smbus_read_resources(struct device *dev)
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{
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struct resource *res = new_resource(dev, PCI_BASE_ADDRESS_4);
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res->base = SMBUS_IO_BASE;
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res->size = 32;
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res->limit = res->base + res->size - 1;
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res->flags = IORESOURCE_IO | IORESOURCE_FIXED | IORESOURCE_RESERVE |
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IORESOURCE_STORED | IORESOURCE_ASSIGNED;
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}
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static struct device_operations smbus_ops = {
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.read_resources = smbus_read_resources,
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.set_resources = pci_dev_set_resources,
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.enable_resources = pci_dev_enable_resources,
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.scan_bus = scan_smbus,
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.enable = i82801gx_enable,
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.ops_smbus_bus = &lops_smbus_bus,
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.ops_pci = &smbus_pci_ops,
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};
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/* 82801GB/GR/GDH/GBM/GHM/GU (ICH7/ICH7R/ICH7DH/ICH7-M/ICH7-M DH/ICH7-U) */
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static const struct pci_driver i82801gx_smbus __pci_driver = {
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.ops = &smbus_ops,
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.vendor = PCI_VENDOR_ID_INTEL,
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.device = 0x27da,
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};
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