Merge remote-tracking branch 'remotes/kraxel/tags/vga-20210723-pull-request' into...
[qemu.git] / hw / ipmi / isa_ipmi_bt.c
1 /*
2 * QEMU ISA IPMI BT emulation
3 *
4 * Copyright (c) 2015 Corey Minyard, MontaVista Software, LLC
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #include "qemu/osdep.h"
26 #include "qemu/module.h"
27 #include "qapi/error.h"
28 #include "hw/irq.h"
29 #include "hw/ipmi/ipmi_bt.h"
30 #include "hw/isa/isa.h"
31 #include "hw/qdev-properties.h"
32 #include "migration/vmstate.h"
33 #include "qom/object.h"
34
35 #define TYPE_ISA_IPMI_BT "isa-ipmi-bt"
36 OBJECT_DECLARE_SIMPLE_TYPE(ISAIPMIBTDevice, ISA_IPMI_BT)
37
38 struct ISAIPMIBTDevice {
39 ISADevice dev;
40 int32_t isairq;
41 qemu_irq irq;
42 IPMIBT bt;
43 uint32_t uuid;
44 };
45
46 static void isa_ipmi_bt_get_fwinfo(struct IPMIInterface *ii, IPMIFwInfo *info)
47 {
48 ISAIPMIBTDevice *iib = ISA_IPMI_BT(ii);
49
50 ipmi_bt_get_fwinfo(&iib->bt, info);
51 info->interrupt_number = iib->isairq;
52 info->i2c_slave_address = iib->bt.bmc->slave_addr;
53 info->uuid = iib->uuid;
54 }
55
56 static void isa_ipmi_bt_raise_irq(IPMIBT *ib)
57 {
58 ISAIPMIBTDevice *iib = ib->opaque;
59
60 qemu_irq_raise(iib->irq);
61 }
62
63 static void isa_ipmi_bt_lower_irq(IPMIBT *ib)
64 {
65 ISAIPMIBTDevice *iib = ib->opaque;
66
67 qemu_irq_lower(iib->irq);
68 }
69
70 static void isa_ipmi_bt_realize(DeviceState *dev, Error **errp)
71 {
72 Error *err = NULL;
73 ISADevice *isadev = ISA_DEVICE(dev);
74 ISAIPMIBTDevice *iib = ISA_IPMI_BT(dev);
75 IPMIInterface *ii = IPMI_INTERFACE(dev);
76 IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
77
78 if (!iib->bt.bmc) {
79 error_setg(errp, "IPMI device requires a bmc attribute to be set");
80 return;
81 }
82
83 iib->uuid = ipmi_next_uuid();
84
85 iib->bt.bmc->intf = ii;
86 iib->bt.opaque = iib;
87
88 iic->init(ii, 0, &err);
89 if (err) {
90 error_propagate(errp, err);
91 return;
92 }
93
94 if (iib->isairq > 0) {
95 isa_init_irq(isadev, &iib->irq, iib->isairq);
96 iib->bt.use_irq = 1;
97 iib->bt.raise_irq = isa_ipmi_bt_raise_irq;
98 iib->bt.lower_irq = isa_ipmi_bt_lower_irq;
99 }
100
101 qdev_set_legacy_instance_id(dev, iib->bt.io_base, iib->bt.io_length);
102
103 isa_register_ioport(isadev, &iib->bt.io, iib->bt.io_base);
104 }
105
106 static const VMStateDescription vmstate_ISAIPMIBTDevice = {
107 .name = TYPE_IPMI_INTERFACE_PREFIX "isa-bt",
108 .version_id = 2,
109 .minimum_version_id = 2,
110 /*
111 * Version 1 had messed up the array transfer, it's not even usable
112 * because it used VMSTATE_VBUFFER_UINT32, but it did not transfer
113 * the buffer length, so random things would happen.
114 */
115 .fields = (VMStateField[]) {
116 VMSTATE_STRUCT(bt, ISAIPMIBTDevice, 1, vmstate_IPMIBT, IPMIBT),
117 VMSTATE_END_OF_LIST()
118 }
119 };
120
121 static void isa_ipmi_bt_init(Object *obj)
122 {
123 ISAIPMIBTDevice *iib = ISA_IPMI_BT(obj);
124
125 ipmi_bmc_find_and_link(obj, (Object **) &iib->bt.bmc);
126
127 vmstate_register(NULL, 0, &vmstate_ISAIPMIBTDevice, iib);
128 }
129
130 static void *isa_ipmi_bt_get_backend_data(IPMIInterface *ii)
131 {
132 ISAIPMIBTDevice *iib = ISA_IPMI_BT(ii);
133
134 return &iib->bt;
135 }
136
137 static Property ipmi_isa_properties[] = {
138 DEFINE_PROP_UINT32("ioport", ISAIPMIBTDevice, bt.io_base, 0xe4),
139 DEFINE_PROP_INT32("irq", ISAIPMIBTDevice, isairq, 5),
140 DEFINE_PROP_END_OF_LIST(),
141 };
142
143 static void isa_ipmi_bt_class_init(ObjectClass *oc, void *data)
144 {
145 DeviceClass *dc = DEVICE_CLASS(oc);
146 IPMIInterfaceClass *iic = IPMI_INTERFACE_CLASS(oc);
147
148 dc->realize = isa_ipmi_bt_realize;
149 device_class_set_props(dc, ipmi_isa_properties);
150
151 iic->get_backend_data = isa_ipmi_bt_get_backend_data;
152 ipmi_bt_class_init(iic);
153 iic->get_fwinfo = isa_ipmi_bt_get_fwinfo;
154 }
155
156 static const TypeInfo isa_ipmi_bt_info = {
157 .name = TYPE_ISA_IPMI_BT,
158 .parent = TYPE_ISA_DEVICE,
159 .instance_size = sizeof(ISAIPMIBTDevice),
160 .instance_init = isa_ipmi_bt_init,
161 .class_init = isa_ipmi_bt_class_init,
162 .interfaces = (InterfaceInfo[]) {
163 { TYPE_IPMI_INTERFACE },
164 { }
165 }
166 };
167
168 static void ipmi_register_types(void)
169 {
170 type_register_static(&isa_ipmi_bt_info);
171 }
172
173 type_init(ipmi_register_types)