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12f983c6 CM |
1 | /* |
2 | * QEMU PCI IPMI KCS 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_kcs.h" | |
edf5ca5d | 28 | #include "hw/pci/pci_device.h" |
db1015e9 | 29 | #include "qom/object.h" |
12f983c6 CM |
30 | |
31 | #define TYPE_PCI_IPMI_KCS "pci-ipmi-kcs" | |
8063396b | 32 | OBJECT_DECLARE_SIMPLE_TYPE(PCIIPMIKCSDevice, PCI_IPMI_KCS) |
12f983c6 | 33 | |
db1015e9 | 34 | struct PCIIPMIKCSDevice { |
12f983c6 CM |
35 | PCIDevice dev; |
36 | IPMIKCS kcs; | |
37 | bool irq_enabled; | |
38 | uint32_t uuid; | |
db1015e9 | 39 | }; |
12f983c6 CM |
40 | |
41 | static void pci_ipmi_raise_irq(IPMIKCS *ik) | |
42 | { | |
43 | PCIIPMIKCSDevice *pik = ik->opaque; | |
44 | ||
45 | pci_set_irq(&pik->dev, true); | |
46 | } | |
47 | ||
48 | static void pci_ipmi_lower_irq(IPMIKCS *ik) | |
49 | { | |
50 | PCIIPMIKCSDevice *pik = ik->opaque; | |
51 | ||
52 | pci_set_irq(&pik->dev, false); | |
53 | } | |
54 | ||
55 | static void pci_ipmi_kcs_realize(PCIDevice *pd, Error **errp) | |
56 | { | |
f6166a4d | 57 | Error *err = NULL; |
12f983c6 CM |
58 | PCIIPMIKCSDevice *pik = PCI_IPMI_KCS(pd); |
59 | IPMIInterface *ii = IPMI_INTERFACE(pd); | |
60 | IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); | |
61 | ||
62 | if (!pik->kcs.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->kcs.bmc->intf = ii; | |
70 | pik->kcs.opaque = pik; | |
71 | ||
72 | pci_config_set_prog_interface(pd->config, 0x01); /* KCS */ | |
73 | pci_config_set_interrupt_pin(pd->config, 0x01); | |
74 | pik->kcs.use_irq = 1; | |
75 | pik->kcs.raise_irq = pci_ipmi_raise_irq; | |
76 | pik->kcs.lower_irq = pci_ipmi_lower_irq; | |
77 | ||
f6166a4d MA |
78 | iic->init(ii, 8, &err); |
79 | if (err) { | |
80 | error_propagate(errp, err); | |
12f983c6 CM |
81 | return; |
82 | } | |
83 | pci_register_bar(pd, 0, PCI_BASE_ADDRESS_SPACE_IO, &pik->kcs.io); | |
84 | } | |
85 | ||
86 | const VMStateDescription vmstate_PCIIPMIKCSDevice = { | |
87 | .name = TYPE_IPMI_INTERFACE_PREFIX "pci-kcs", | |
88 | .version_id = 1, | |
89 | .minimum_version_id = 1, | |
90 | .fields = (VMStateField[]) { | |
91 | VMSTATE_PCI_DEVICE(dev, PCIIPMIKCSDevice), | |
92 | VMSTATE_STRUCT(kcs, PCIIPMIKCSDevice, 1, vmstate_IPMIKCS, IPMIKCS), | |
93 | VMSTATE_END_OF_LIST() | |
94 | } | |
95 | }; | |
96 | ||
97 | static void pci_ipmi_kcs_instance_init(Object *obj) | |
98 | { | |
99 | PCIIPMIKCSDevice *pik = PCI_IPMI_KCS(obj); | |
100 | ||
101 | ipmi_bmc_find_and_link(obj, (Object **) &pik->kcs.bmc); | |
102 | } | |
103 | ||
104 | static void *pci_ipmi_kcs_get_backend_data(IPMIInterface *ii) | |
105 | { | |
106 | PCIIPMIKCSDevice *pik = PCI_IPMI_KCS(ii); | |
107 | ||
108 | return &pik->kcs; | |
109 | } | |
110 | ||
111 | static void pci_ipmi_kcs_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_PCIIPMIKCSDevice; | |
123 | dc->desc = "PCI IPMI KCS"; | |
124 | pdc->realize = pci_ipmi_kcs_realize; | |
125 | ||
126 | iic->get_backend_data = pci_ipmi_kcs_get_backend_data; | |
127 | ipmi_kcs_class_init(iic); | |
128 | } | |
129 | ||
130 | static const TypeInfo pci_ipmi_kcs_info = { | |
131 | .name = TYPE_PCI_IPMI_KCS, | |
132 | .parent = TYPE_PCI_DEVICE, | |
133 | .instance_size = sizeof(PCIIPMIKCSDevice), | |
134 | .instance_init = pci_ipmi_kcs_instance_init, | |
135 | .class_init = pci_ipmi_kcs_class_init, | |
136 | .interfaces = (InterfaceInfo[]) { | |
137 | { TYPE_IPMI_INTERFACE }, | |
138 | { INTERFACE_CONVENTIONAL_PCI_DEVICE }, | |
139 | { } | |
140 | } | |
141 | }; | |
142 | ||
143 | static void pci_ipmi_kcs_register_types(void) | |
144 | { | |
145 | type_register_static(&pci_ipmi_kcs_info); | |
146 | } | |
147 | ||
148 | type_init(pci_ipmi_kcs_register_types) |