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 <console/console.h> |
| 18 | #include <device/device.h> |
| 19 | #include <device/path.h> |
| 20 | #include <device/smbus.h> |
| 21 | #include <device/pci.h> |
| 22 | #include <device/pci_ids.h> |
| 23 | #include <device/pci_ops.h> |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 24 | #include <arch/io.h> |
Arthur Heymans | 16fe790 | 2017-04-12 17:01:31 +0200 | [diff] [blame] | 25 | #include <southbridge/intel/common/smbus.h> |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 26 | #include "i82801gx.h" |
Stefan Reinauer | 109ab31 | 2009-08-12 16:08:05 +0000 | [diff] [blame] | 27 | |
Elyes HAOUAS | 9966703 | 2018-05-13 12:47:28 +0200 | [diff] [blame^] | 28 | static int lsmbus_read_byte(struct device *dev, u8 address) |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 29 | { |
| 30 | u16 device; |
| 31 | struct resource *res; |
Stefan Reinauer | a8e1168 | 2009-03-11 14:54:18 +0000 | [diff] [blame] | 32 | struct bus *pbus; |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 33 | |
Stefan Reinauer | 2b34db8 | 2009-02-28 20:10:20 +0000 | [diff] [blame] | 34 | device = dev->path.i2c.device; |
Stefan Reinauer | a8e1168 | 2009-03-11 14:54:18 +0000 | [diff] [blame] | 35 | pbus = get_pbus_smbus(dev); |
| 36 | res = find_resource(pbus->dev, 0x20); |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 37 | |
| 38 | return do_smbus_read_byte(res->base, device, address); |
| 39 | } |
| 40 | |
Elyes HAOUAS | 9966703 | 2018-05-13 12:47:28 +0200 | [diff] [blame^] | 41 | static int lsmbus_write_byte(struct device *dev, u8 address, u8 data) |
Sven Schnelle | 718afbe | 2011-10-23 15:36:15 +0200 | [diff] [blame] | 42 | { |
| 43 | u16 device; |
| 44 | struct resource *res; |
| 45 | struct bus *pbus; |
| 46 | |
| 47 | device = dev->path.i2c.device; |
| 48 | pbus = get_pbus_smbus(dev); |
| 49 | res = find_resource(pbus->dev, 0x20); |
| 50 | return do_smbus_write_byte(res->base, device, address, data); |
| 51 | } |
| 52 | |
Elyes HAOUAS | 9966703 | 2018-05-13 12:47:28 +0200 | [diff] [blame^] | 53 | static int lsmbus_block_write(struct device *dev, u8 cmd, u8 bytes, |
| 54 | const u8 *buf) |
Sven Schnelle | 718afbe | 2011-10-23 15:36:15 +0200 | [diff] [blame] | 55 | { |
| 56 | u16 device; |
| 57 | struct resource *res; |
| 58 | struct bus *pbus; |
| 59 | |
| 60 | device = dev->path.i2c.device; |
| 61 | pbus = get_pbus_smbus(dev); |
| 62 | res = find_resource(pbus->dev, 0x20); |
| 63 | return do_smbus_block_write(res->base, device, cmd, bytes, buf); |
| 64 | } |
| 65 | |
Elyes HAOUAS | 9966703 | 2018-05-13 12:47:28 +0200 | [diff] [blame^] | 66 | 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] | 67 | { |
| 68 | u16 device; |
| 69 | struct resource *res; |
| 70 | struct bus *pbus; |
| 71 | |
| 72 | device = dev->path.i2c.device; |
| 73 | pbus = get_pbus_smbus(dev); |
| 74 | res = find_resource(pbus->dev, 0x20); |
| 75 | return do_smbus_block_read(res->base, device, cmd, bytes, buf); |
| 76 | } |
| 77 | |
| 78 | |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 79 | static struct smbus_bus_operations lops_smbus_bus = { |
Stefan Reinauer | a8e1168 | 2009-03-11 14:54:18 +0000 | [diff] [blame] | 80 | .read_byte = lsmbus_read_byte, |
Sven Schnelle | 718afbe | 2011-10-23 15:36:15 +0200 | [diff] [blame] | 81 | .write_byte = lsmbus_write_byte, |
| 82 | .block_read = lsmbus_block_read, |
| 83 | .block_write = lsmbus_block_write, |
Stefan Reinauer | a8e1168 | 2009-03-11 14:54:18 +0000 | [diff] [blame] | 84 | }; |
| 85 | |
Elyes HAOUAS | 9966703 | 2018-05-13 12:47:28 +0200 | [diff] [blame^] | 86 | static void smbus_set_subsystem(struct device *dev, unsigned int vendor, |
| 87 | unsigned int device) |
Stefan Reinauer | a8e1168 | 2009-03-11 14:54:18 +0000 | [diff] [blame] | 88 | { |
| 89 | if (!vendor || !device) { |
| 90 | pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, |
| 91 | pci_read_config32(dev, PCI_VENDOR_ID)); |
| 92 | } else { |
| 93 | pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, |
| 94 | ((device & 0xffff) << 16) | (vendor & 0xffff)); |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | static struct pci_operations smbus_pci_ops = { |
| 99 | .set_subsystem = smbus_set_subsystem, |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 100 | }; |
| 101 | |
Elyes HAOUAS | 9966703 | 2018-05-13 12:47:28 +0200 | [diff] [blame^] | 102 | static void smbus_read_resources(struct device *dev) |
Sven Schnelle | 3c97679 | 2011-10-23 15:30:29 +0200 | [diff] [blame] | 103 | { |
| 104 | struct resource *res = new_resource(dev, PCI_BASE_ADDRESS_4); |
| 105 | res->base = SMBUS_IO_BASE; |
| 106 | res->size = 32; |
| 107 | res->limit = res->base + res->size - 1; |
| 108 | res->flags = IORESOURCE_IO | IORESOURCE_FIXED | IORESOURCE_RESERVE | |
| 109 | IORESOURCE_STORED | IORESOURCE_ASSIGNED; |
| 110 | } |
| 111 | |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 112 | static struct device_operations smbus_ops = { |
Sven Schnelle | 3c97679 | 2011-10-23 15:30:29 +0200 | [diff] [blame] | 113 | .read_resources = smbus_read_resources, |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 114 | .set_resources = pci_dev_set_resources, |
| 115 | .enable_resources = pci_dev_enable_resources, |
Kyösti Mälkki | d0e212c | 2015-02-26 20:47:47 +0200 | [diff] [blame] | 116 | .scan_bus = scan_smbus, |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 117 | .enable = i82801gx_enable, |
| 118 | .ops_smbus_bus = &lops_smbus_bus, |
Stefan Reinauer | a8e1168 | 2009-03-11 14:54:18 +0000 | [diff] [blame] | 119 | .ops_pci = &smbus_pci_ops, |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 120 | }; |
| 121 | |
| 122 | /* 82801GB/GR/GDH/GBM/GHM/GU (ICH7/ICH7R/ICH7DH/ICH7-M/ICH7-M DH/ICH7-U) */ |
| 123 | static const struct pci_driver i82801gx_smbus __pci_driver = { |
| 124 | .ops = &smbus_ops, |
| 125 | .vendor = PCI_VENDOR_ID_INTEL, |
Uwe Hermann | 5d7a1c8 | 2008-10-31 18:41:09 +0000 | [diff] [blame] | 126 | .device = 0x27da, |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 127 | }; |