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Commit | Line | Data |
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678e7b94 JB |
1 | /* |
2 | * ACPI implementation | |
3 | * | |
4 | * Copyright (c) 2006 Fabrice Bellard | |
6f918e40 JB |
5 | * Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp> |
6 | * VA Linux Systems Japan K.K. | |
7 | * Copyright (C) 2012 Jason Baron <jbaron@redhat.com> | |
8 | * | |
6086e300 TH |
9 | * This program is free software; you can redistribute it and/or modify |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
678e7b94 | 13 | * |
6086e300 | 14 | * This program is distributed in the hope that it will be useful, |
678e7b94 JB |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
6086e300 | 17 | * General Public License for more details. |
6f918e40 | 18 | * |
6086e300 TH |
19 | * You should have received a copy of the GNU General Public License |
20 | * along with this program; if not, see <http://www.gnu.org/licenses/> | |
678e7b94 | 21 | */ |
0b8fa32f | 22 | |
b6a0aa05 | 23 | #include "qemu/osdep.h" |
5588a58c | 24 | #include "qemu/range.h" |
0d09e41a | 25 | #include "hw/i2c/pm_smbus.h" |
83c9f4ca | 26 | #include "hw/pci/pci.h" |
d6454270 | 27 | #include "migration/vmstate.h" |
0b8fa32f | 28 | #include "qemu/module.h" |
678e7b94 | 29 | |
0d09e41a | 30 | #include "hw/i386/ich9.h" |
db1015e9 | 31 | #include "qom/object.h" |
678e7b94 | 32 | |
8063396b | 33 | OBJECT_DECLARE_SIMPLE_TYPE(ICH9SMBState, ICH9_SMB_DEVICE) |
678e7b94 | 34 | |
db1015e9 | 35 | struct ICH9SMBState { |
678e7b94 JB |
36 | PCIDevice dev; |
37 | ||
e724385a CM |
38 | bool irq_enabled; |
39 | ||
678e7b94 | 40 | PMSMBus smb; |
db1015e9 | 41 | }; |
678e7b94 | 42 | |
4ab2f2a8 CM |
43 | static bool ich9_vmstate_need_smbus(void *opaque, int version_id) |
44 | { | |
45 | return pm_smbus_vmstate_needed(); | |
46 | } | |
47 | ||
678e7b94 JB |
48 | static const VMStateDescription vmstate_ich9_smbus = { |
49 | .name = "ich9_smb", | |
50 | .version_id = 1, | |
51 | .minimum_version_id = 1, | |
678e7b94 | 52 | .fields = (VMStateField[]) { |
4ab2f2a8 CM |
53 | VMSTATE_PCI_DEVICE(dev, ICH9SMBState), |
54 | VMSTATE_BOOL_TEST(irq_enabled, ICH9SMBState, ich9_vmstate_need_smbus), | |
55 | VMSTATE_STRUCT_TEST(smb, ICH9SMBState, ich9_vmstate_need_smbus, 1, | |
56 | pmsmb_vmstate, PMSMBus), | |
678e7b94 JB |
57 | VMSTATE_END_OF_LIST() |
58 | } | |
59 | }; | |
60 | ||
798512e5 GH |
61 | static void ich9_smbus_write_config(PCIDevice *d, uint32_t address, |
62 | uint32_t val, int len) | |
678e7b94 | 63 | { |
798512e5 | 64 | ICH9SMBState *s = ICH9_SMB_DEVICE(d); |
678e7b94 | 65 | |
798512e5 GH |
66 | pci_default_write_config(d, address, val, len); |
67 | if (range_covers_byte(address, len, ICH9_SMB_HOSTC)) { | |
68 | uint8_t hostc = s->dev.config[ICH9_SMB_HOSTC]; | |
38ad4fae | 69 | if (hostc & ICH9_SMB_HOSTC_HST_EN) { |
798512e5 GH |
70 | memory_region_set_enabled(&s->smb.io, true); |
71 | } else { | |
72 | memory_region_set_enabled(&s->smb.io, false); | |
73 | } | |
38ad4fae CM |
74 | s->smb.i2c_enable = (hostc & ICH9_SMB_HOSTC_I2C_EN) != 0; |
75 | if (hostc & ICH9_SMB_HOSTC_SSRESET) { | |
76 | s->smb.reset(&s->smb); | |
77 | s->dev.config[ICH9_SMB_HOSTC] &= ~ICH9_SMB_HOSTC_SSRESET; | |
78 | } | |
678e7b94 JB |
79 | } |
80 | } | |
81 | ||
9af21dbe | 82 | static void ich9_smbus_realize(PCIDevice *d, Error **errp) |
678e7b94 JB |
83 | { |
84 | ICH9SMBState *s = ICH9_SMB_DEVICE(d); | |
85 | ||
86 | /* TODO? D31IP.SMIP in chipset configuration space */ | |
87 | pci_config_set_interrupt_pin(d->config, 0x01); /* interrupt pin 1 */ | |
88 | ||
678e7b94 JB |
89 | pci_set_byte(d->config + ICH9_SMB_HOSTC, 0); |
90 | /* TODO bar0, bar1: 64bit BAR support*/ | |
91 | ||
45726b6e | 92 | pm_smbus_init(&d->qdev, &s->smb, false); |
798512e5 GH |
93 | pci_register_bar(d, ICH9_SMB_SMB_BASE_BAR, PCI_BASE_ADDRESS_SPACE_IO, |
94 | &s->smb.io); | |
678e7b94 JB |
95 | } |
96 | ||
97 | static void ich9_smb_class_init(ObjectClass *klass, void *data) | |
98 | { | |
99 | DeviceClass *dc = DEVICE_CLASS(klass); | |
100 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | |
101 | ||
102 | k->vendor_id = PCI_VENDOR_ID_INTEL; | |
103 | k->device_id = PCI_DEVICE_ID_INTEL_ICH9_6; | |
104 | k->revision = ICH9_A2_SMB_REVISION; | |
105 | k->class_id = PCI_CLASS_SERIAL_SMBUS; | |
678e7b94 JB |
106 | dc->vmsd = &vmstate_ich9_smbus; |
107 | dc->desc = "ICH9 SMBUS Bridge"; | |
9af21dbe | 108 | k->realize = ich9_smbus_realize; |
798512e5 | 109 | k->config_write = ich9_smbus_write_config; |
bfa6dfd0 MA |
110 | /* |
111 | * Reason: part of ICH9 southbridge, needs to be wired up by | |
112 | * pc_q35_init() | |
113 | */ | |
e90f2a8c | 114 | dc->user_creatable = false; |
678e7b94 JB |
115 | } |
116 | ||
e724385a CM |
117 | static void ich9_smb_set_irq(PMSMBus *pmsmb, bool enabled) |
118 | { | |
119 | ICH9SMBState *s = pmsmb->opaque; | |
120 | ||
121 | if (enabled == s->irq_enabled) { | |
122 | return; | |
123 | } | |
124 | ||
125 | s->irq_enabled = enabled; | |
126 | pci_set_irq(&s->dev, enabled); | |
127 | } | |
128 | ||
a5c82852 | 129 | I2CBus *ich9_smb_init(PCIBus *bus, int devfn, uint32_t smb_io_base) |
678e7b94 JB |
130 | { |
131 | PCIDevice *d = | |
132 | pci_create_simple_multifunction(bus, devfn, true, TYPE_ICH9_SMB_DEVICE); | |
133 | ICH9SMBState *s = ICH9_SMB_DEVICE(d); | |
e724385a CM |
134 | s->smb.set_irq = ich9_smb_set_irq; |
135 | s->smb.opaque = s; | |
678e7b94 JB |
136 | return s->smb.smbus; |
137 | } | |
138 | ||
139 | static const TypeInfo ich9_smb_info = { | |
140 | .name = TYPE_ICH9_SMB_DEVICE, | |
141 | .parent = TYPE_PCI_DEVICE, | |
142 | .instance_size = sizeof(ICH9SMBState), | |
143 | .class_init = ich9_smb_class_init, | |
fd3b02c8 EH |
144 | .interfaces = (InterfaceInfo[]) { |
145 | { INTERFACE_CONVENTIONAL_PCI_DEVICE }, | |
146 | { }, | |
147 | }, | |
678e7b94 JB |
148 | }; |
149 | ||
150 | static void ich9_smb_register(void) | |
151 | { | |
152 | type_register_static(&ich9_smb_info); | |
153 | } | |
154 | ||
155 | type_init(ich9_smb_register); |