root / hw / i2c / smbus_ich9.c @ 49ab747f
History | View | Annotate | Download (3.8 kB)
1 |
/*
|
---|---|
2 |
* ACPI implementation
|
3 |
*
|
4 |
* Copyright (c) 2006 Fabrice Bellard
|
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 |
*
|
9 |
* This is based on acpi.c, but heavily rewritten.
|
10 |
*
|
11 |
* This library is free software; you can redistribute it and/or
|
12 |
* modify it under the terms of the GNU Lesser General Public
|
13 |
* License version 2 as published by the Free Software Foundation.
|
14 |
*
|
15 |
* This library is distributed in the hope that it will be useful,
|
16 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
17 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
18 |
* Lesser General Public License for more details.
|
19 |
*
|
20 |
* You should have received a copy of the GNU Lesser General Public
|
21 |
* License along with this library; if not, see <http://www.gnu.org/licenses/>
|
22 |
*
|
23 |
* Contributions after 2012-01-13 are licensed under the terms of the
|
24 |
* GNU GPL, version 2 or (at your option) any later version.
|
25 |
*
|
26 |
*/
|
27 |
#include "hw/hw.h" |
28 |
#include "hw/i386/pc.h" |
29 |
#include "hw/i2c/pm_smbus.h" |
30 |
#include "hw/pci/pci.h" |
31 |
#include "sysemu/sysemu.h" |
32 |
#include "hw/i2c/i2c.h" |
33 |
#include "hw/i2c/smbus.h" |
34 |
|
35 |
#include "hw/i386/ich9.h" |
36 |
|
37 |
#define TYPE_ICH9_SMB_DEVICE "ICH9 SMB" |
38 |
#define ICH9_SMB_DEVICE(obj) \
|
39 |
OBJECT_CHECK(ICH9SMBState, (obj), TYPE_ICH9_SMB_DEVICE) |
40 |
|
41 |
typedef struct ICH9SMBState { |
42 |
PCIDevice dev; |
43 |
|
44 |
PMSMBus smb; |
45 |
} ICH9SMBState; |
46 |
|
47 |
static const VMStateDescription vmstate_ich9_smbus = { |
48 |
.name = "ich9_smb",
|
49 |
.version_id = 1,
|
50 |
.minimum_version_id = 1,
|
51 |
.minimum_version_id_old = 1,
|
52 |
.fields = (VMStateField[]) { |
53 |
VMSTATE_PCI_DEVICE(dev, struct ICH9SMBState),
|
54 |
VMSTATE_END_OF_LIST() |
55 |
} |
56 |
}; |
57 |
|
58 |
static void ich9_smbus_write_config(PCIDevice *d, uint32_t address, |
59 |
uint32_t val, int len)
|
60 |
{ |
61 |
ICH9SMBState *s = ICH9_SMB_DEVICE(d); |
62 |
|
63 |
pci_default_write_config(d, address, val, len); |
64 |
if (range_covers_byte(address, len, ICH9_SMB_HOSTC)) {
|
65 |
uint8_t hostc = s->dev.config[ICH9_SMB_HOSTC]; |
66 |
if ((hostc & ICH9_SMB_HOSTC_HST_EN) &&
|
67 |
!(hostc & ICH9_SMB_HOSTC_I2C_EN)) { |
68 |
memory_region_set_enabled(&s->smb.io, true);
|
69 |
} else {
|
70 |
memory_region_set_enabled(&s->smb.io, false);
|
71 |
} |
72 |
} |
73 |
} |
74 |
|
75 |
static int ich9_smbus_initfn(PCIDevice *d) |
76 |
{ |
77 |
ICH9SMBState *s = ICH9_SMB_DEVICE(d); |
78 |
|
79 |
/* TODO? D31IP.SMIP in chipset configuration space */
|
80 |
pci_config_set_interrupt_pin(d->config, 0x01); /* interrupt pin 1 */ |
81 |
|
82 |
pci_set_byte(d->config + ICH9_SMB_HOSTC, 0);
|
83 |
/* TODO bar0, bar1: 64bit BAR support*/
|
84 |
|
85 |
pm_smbus_init(&d->qdev, &s->smb); |
86 |
pci_register_bar(d, ICH9_SMB_SMB_BASE_BAR, PCI_BASE_ADDRESS_SPACE_IO, |
87 |
&s->smb.io); |
88 |
return 0; |
89 |
} |
90 |
|
91 |
static void ich9_smb_class_init(ObjectClass *klass, void *data) |
92 |
{ |
93 |
DeviceClass *dc = DEVICE_CLASS(klass); |
94 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
95 |
|
96 |
k->vendor_id = PCI_VENDOR_ID_INTEL; |
97 |
k->device_id = PCI_DEVICE_ID_INTEL_ICH9_6; |
98 |
k->revision = ICH9_A2_SMB_REVISION; |
99 |
k->class_id = PCI_CLASS_SERIAL_SMBUS; |
100 |
dc->no_user = 1;
|
101 |
dc->vmsd = &vmstate_ich9_smbus; |
102 |
dc->desc = "ICH9 SMBUS Bridge";
|
103 |
k->init = ich9_smbus_initfn; |
104 |
k->config_write = ich9_smbus_write_config; |
105 |
} |
106 |
|
107 |
i2c_bus *ich9_smb_init(PCIBus *bus, int devfn, uint32_t smb_io_base)
|
108 |
{ |
109 |
PCIDevice *d = |
110 |
pci_create_simple_multifunction(bus, devfn, true, TYPE_ICH9_SMB_DEVICE);
|
111 |
ICH9SMBState *s = ICH9_SMB_DEVICE(d); |
112 |
return s->smb.smbus;
|
113 |
} |
114 |
|
115 |
static const TypeInfo ich9_smb_info = { |
116 |
.name = TYPE_ICH9_SMB_DEVICE, |
117 |
.parent = TYPE_PCI_DEVICE, |
118 |
.instance_size = sizeof(ICH9SMBState),
|
119 |
.class_init = ich9_smb_class_init, |
120 |
}; |
121 |
|
122 |
static void ich9_smb_register(void) |
123 |
{ |
124 |
type_register_static(&ich9_smb_info); |
125 |
} |
126 |
|
127 |
type_init(ich9_smb_register); |