Merge remote-tracking branch 'remotes/kraxel/tags/vga-20210723-pull-request' into...
[qemu.git] / hw / ipmi / pci_ipmi_bt.c
1 /*
2 * QEMU PCI IPMI BT emulation
3 *
4 * Copyright (c) 2017 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 #include "qemu/osdep.h"
25 #include "migration/vmstate.h"
26 #include "qapi/error.h"
27 #include "hw/ipmi/ipmi_bt.h"
28 #include "hw/pci/pci.h"
29 #include "qom/object.h"
30
31 #define TYPE_PCI_IPMI_BT "pci-ipmi-bt"
32 OBJECT_DECLARE_SIMPLE_TYPE(PCIIPMIBTDevice, PCI_IPMI_BT)
33
34 struct PCIIPMIBTDevice {
35 PCIDevice dev;
36 IPMIBT bt;
37 bool irq_enabled;
38 uint32_t uuid;
39 };
40
41 static void pci_ipmi_raise_irq(IPMIBT *ik)
42 {
43 PCIIPMIBTDevice *pik = ik->opaque;
44
45 pci_set_irq(&pik->dev, true);
46 }
47
48 static void pci_ipmi_lower_irq(IPMIBT *ik)
49 {
50 PCIIPMIBTDevice *pik = ik->opaque;
51
52 pci_set_irq(&pik->dev, false);
53 }
54
55 static void pci_ipmi_bt_realize(PCIDevice *pd, Error **errp)
56 {
57 Error *err = NULL;
58 PCIIPMIBTDevice *pik = PCI_IPMI_BT(pd);
59 IPMIInterface *ii = IPMI_INTERFACE(pd);
60 IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
61
62 if (!pik->bt.bmc) {
63 error_setg(errp, "IPMI device requires a bmc attribute to be set");
64 return;
65 }
66
67 pik->uuid = ipmi_next_uuid();
68
69 pik->bt.bmc->intf = ii;
70 pik->bt.opaque = pik;
71
72 pci_config_set_prog_interface(pd->config, 0x02); /* BT */
73 pci_config_set_interrupt_pin(pd->config, 0x01);
74 pik->bt.use_irq = 1;
75 pik->bt.raise_irq = pci_ipmi_raise_irq;
76 pik->bt.lower_irq = pci_ipmi_lower_irq;
77
78 iic->init(ii, 8, &err);
79 if (err) {
80 error_propagate(errp, err);
81 return;
82 }
83 pci_register_bar(pd, 0, PCI_BASE_ADDRESS_SPACE_IO, &pik->bt.io);
84 }
85
86 const VMStateDescription vmstate_PCIIPMIBTDevice = {
87 .name = TYPE_IPMI_INTERFACE_PREFIX "pci-bt",
88 .version_id = 1,
89 .minimum_version_id = 1,
90 .fields = (VMStateField[]) {
91 VMSTATE_PCI_DEVICE(dev, PCIIPMIBTDevice),
92 VMSTATE_STRUCT(bt, PCIIPMIBTDevice, 1, vmstate_IPMIBT, IPMIBT),
93 VMSTATE_END_OF_LIST()
94 }
95 };
96
97 static void pci_ipmi_bt_instance_init(Object *obj)
98 {
99 PCIIPMIBTDevice *pik = PCI_IPMI_BT(obj);
100
101 ipmi_bmc_find_and_link(obj, (Object **) &pik->bt.bmc);
102 }
103
104 static void *pci_ipmi_bt_get_backend_data(IPMIInterface *ii)
105 {
106 PCIIPMIBTDevice *pik = PCI_IPMI_BT(ii);
107
108 return &pik->bt;
109 }
110
111 static void pci_ipmi_bt_class_init(ObjectClass *oc, void *data)
112 {
113 DeviceClass *dc = DEVICE_CLASS(oc);
114 PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc);
115 IPMIInterfaceClass *iic = IPMI_INTERFACE_CLASS(oc);
116
117 pdc->vendor_id = PCI_VENDOR_ID_QEMU;
118 pdc->device_id = PCI_DEVICE_ID_QEMU_IPMI;
119 pdc->revision = 1;
120 pdc->class_id = PCI_CLASS_SERIAL_IPMI;
121
122 dc->vmsd = &vmstate_PCIIPMIBTDevice;
123 dc->desc = "PCI IPMI BT";
124 pdc->realize = pci_ipmi_bt_realize;
125
126 iic->get_backend_data = pci_ipmi_bt_get_backend_data;
127 ipmi_bt_class_init(iic);
128 }
129
130 static const TypeInfo pci_ipmi_bt_info = {
131 .name = TYPE_PCI_IPMI_BT,
132 .parent = TYPE_PCI_DEVICE,
133 .instance_size = sizeof(PCIIPMIBTDevice),
134 .instance_init = pci_ipmi_bt_instance_init,
135 .class_init = pci_ipmi_bt_class_init,
136 .interfaces = (InterfaceInfo[]) {
137 { TYPE_IPMI_INTERFACE },
138 { INTERFACE_CONVENTIONAL_PCI_DEVICE },
139 { }
140 }
141 };
142
143 static void pci_ipmi_bt_register_types(void)
144 {
145 type_register_static(&pci_ipmi_bt_info);
146 }
147
148 type_init(pci_ipmi_bt_register_types)