Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
Stefan Reinauer | a8e1168 | 2009-03-11 14:54:18 +0000 | [diff] [blame] | 4 | * Copyright (C) 2008-2009 coresystems GmbH |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 5 | * |
Stefan Reinauer | a8e1168 | 2009-03-11 14:54:18 +0000 | [diff] [blame] | 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License as |
| 8 | * published by the Free Software Foundation; version 2 of |
| 9 | * the License. |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 15 | */ |
| 16 | |
Stefan Reinauer | a8e1168 | 2009-03-11 14:54:18 +0000 | [diff] [blame] | 17 | #include <device/device.h> |
| 18 | #include <device/path.h> |
| 19 | #include <device/smbus.h> |
| 20 | #include <device/pci.h> |
| 21 | #include <device/pci_ids.h> |
| 22 | #include <device/pci_ops.h> |
Arthur Heymans | 16fe790 | 2017-04-12 17:01:31 +0200 | [diff] [blame] | 23 | #include <southbridge/intel/common/smbus.h> |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 24 | #include "i82801gx.h" |
Stefan Reinauer | 109ab31 | 2009-08-12 16:08:05 +0000 | [diff] [blame] | 25 | |
Elyes HAOUAS | 9966703 | 2018-05-13 12:47:28 +0200 | [diff] [blame] | 26 | static int lsmbus_read_byte(struct device *dev, u8 address) |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 27 | { |
| 28 | u16 device; |
| 29 | struct resource *res; |
Stefan Reinauer | a8e1168 | 2009-03-11 14:54:18 +0000 | [diff] [blame] | 30 | struct bus *pbus; |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 31 | |
Stefan Reinauer | 2b34db8 | 2009-02-28 20:10:20 +0000 | [diff] [blame] | 32 | device = dev->path.i2c.device; |
Stefan Reinauer | a8e1168 | 2009-03-11 14:54:18 +0000 | [diff] [blame] | 33 | pbus = get_pbus_smbus(dev); |
| 34 | res = find_resource(pbus->dev, 0x20); |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 35 | |
| 36 | return do_smbus_read_byte(res->base, device, address); |
| 37 | } |
| 38 | |
Elyes HAOUAS | 9966703 | 2018-05-13 12:47:28 +0200 | [diff] [blame] | 39 | static int lsmbus_write_byte(struct device *dev, u8 address, u8 data) |
Sven Schnelle | 718afbe | 2011-10-23 15:36:15 +0200 | [diff] [blame] | 40 | { |
| 41 | u16 device; |
| 42 | struct resource *res; |
| 43 | struct bus *pbus; |
| 44 | |
| 45 | device = dev->path.i2c.device; |
| 46 | pbus = get_pbus_smbus(dev); |
| 47 | res = find_resource(pbus->dev, 0x20); |
| 48 | return do_smbus_write_byte(res->base, device, address, data); |
| 49 | } |
| 50 | |
Elyes HAOUAS | 9966703 | 2018-05-13 12:47:28 +0200 | [diff] [blame] | 51 | static int lsmbus_block_write(struct device *dev, u8 cmd, u8 bytes, |
| 52 | const u8 *buf) |
Sven Schnelle | 718afbe | 2011-10-23 15:36:15 +0200 | [diff] [blame] | 53 | { |
| 54 | u16 device; |
| 55 | struct resource *res; |
| 56 | struct bus *pbus; |
| 57 | |
| 58 | device = dev->path.i2c.device; |
| 59 | pbus = get_pbus_smbus(dev); |
| 60 | res = find_resource(pbus->dev, 0x20); |
| 61 | return do_smbus_block_write(res->base, device, cmd, bytes, buf); |
| 62 | } |
| 63 | |
Elyes HAOUAS | 9966703 | 2018-05-13 12:47:28 +0200 | [diff] [blame] | 64 | static int lsmbus_block_read(struct device *dev, u8 cmd, u8 bytes, u8 *buf) |
Sven Schnelle | 718afbe | 2011-10-23 15:36:15 +0200 | [diff] [blame] | 65 | { |
| 66 | u16 device; |
| 67 | struct resource *res; |
| 68 | struct bus *pbus; |
| 69 | |
| 70 | device = dev->path.i2c.device; |
| 71 | pbus = get_pbus_smbus(dev); |
| 72 | res = find_resource(pbus->dev, 0x20); |
| 73 | return do_smbus_block_read(res->base, device, cmd, bytes, buf); |
| 74 | } |
| 75 | |
| 76 | |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 77 | static struct smbus_bus_operations lops_smbus_bus = { |
Stefan Reinauer | a8e1168 | 2009-03-11 14:54:18 +0000 | [diff] [blame] | 78 | .read_byte = lsmbus_read_byte, |
Sven Schnelle | 718afbe | 2011-10-23 15:36:15 +0200 | [diff] [blame] | 79 | .write_byte = lsmbus_write_byte, |
| 80 | .block_read = lsmbus_block_read, |
| 81 | .block_write = lsmbus_block_write, |
Stefan Reinauer | a8e1168 | 2009-03-11 14:54:18 +0000 | [diff] [blame] | 82 | }; |
| 83 | |
Stefan Reinauer | a8e1168 | 2009-03-11 14:54:18 +0000 | [diff] [blame] | 84 | static struct pci_operations smbus_pci_ops = { |
Subrata Banik | 4a0f071 | 2019-03-20 14:29:47 +0530 | [diff] [blame^] | 85 | .set_subsystem = pci_dev_set_subsystem, |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 86 | }; |
| 87 | |
Elyes HAOUAS | 9966703 | 2018-05-13 12:47:28 +0200 | [diff] [blame] | 88 | static void smbus_read_resources(struct device *dev) |
Sven Schnelle | 3c97679 | 2011-10-23 15:30:29 +0200 | [diff] [blame] | 89 | { |
| 90 | struct resource *res = new_resource(dev, PCI_BASE_ADDRESS_4); |
| 91 | res->base = SMBUS_IO_BASE; |
| 92 | res->size = 32; |
| 93 | res->limit = res->base + res->size - 1; |
| 94 | res->flags = IORESOURCE_IO | IORESOURCE_FIXED | IORESOURCE_RESERVE | |
| 95 | IORESOURCE_STORED | IORESOURCE_ASSIGNED; |
| 96 | } |
| 97 | |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 98 | static struct device_operations smbus_ops = { |
Sven Schnelle | 3c97679 | 2011-10-23 15:30:29 +0200 | [diff] [blame] | 99 | .read_resources = smbus_read_resources, |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 100 | .set_resources = pci_dev_set_resources, |
| 101 | .enable_resources = pci_dev_enable_resources, |
Kyösti Mälkki | d0e212c | 2015-02-26 20:47:47 +0200 | [diff] [blame] | 102 | .scan_bus = scan_smbus, |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 103 | .enable = i82801gx_enable, |
| 104 | .ops_smbus_bus = &lops_smbus_bus, |
Stefan Reinauer | a8e1168 | 2009-03-11 14:54:18 +0000 | [diff] [blame] | 105 | .ops_pci = &smbus_pci_ops, |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 106 | }; |
| 107 | |
| 108 | /* 82801GB/GR/GDH/GBM/GHM/GU (ICH7/ICH7R/ICH7DH/ICH7-M/ICH7-M DH/ICH7-U) */ |
| 109 | static const struct pci_driver i82801gx_smbus __pci_driver = { |
| 110 | .ops = &smbus_ops, |
| 111 | .vendor = PCI_VENDOR_ID_INTEL, |
Uwe Hermann | 5d7a1c8 | 2008-10-31 18:41:09 +0000 | [diff] [blame] | 112 | .device = 0x27da, |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 113 | }; |