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8fbab3b6 PD |
1 | /* Copyright (c) Citrix Systems Inc. |
2 | * All rights reserved. | |
3 | * | |
4 | * Redistribution and use in source and binary forms, | |
5 | * with or without modification, are permitted provided | |
6 | * that the following conditions are met: | |
7 | * | |
8 | * * Redistributions of source code must retain the above | |
9 | * copyright notice, this list of conditions and the | |
10 | * following disclaimer. | |
11 | * * Redistributions in binary form must reproduce the above | |
12 | * copyright notice, this list of conditions and the | |
13 | * following disclaimer in the documentation and/or other | |
14 | * materials provided with the distribution. | |
15 | * | |
16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND | |
17 | * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, | |
18 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
19 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
20 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR | |
21 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
22 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
23 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
26 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
27 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
28 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
29 | * SUCH DAMAGE. | |
30 | */ | |
31 | ||
b6a0aa05 | 32 | #include "qemu/osdep.h" |
da34e65c | 33 | #include "qapi/error.h" |
0b8fa32f | 34 | #include "qemu/module.h" |
8fbab3b6 PD |
35 | #include "hw/hw.h" |
36 | #include "hw/pci/pci.h" | |
37 | #include "trace.h" | |
38 | ||
39 | #define TYPE_XEN_PV_DEVICE "xen-pvdevice" | |
40 | ||
41 | #define XEN_PV_DEVICE(obj) \ | |
42 | OBJECT_CHECK(XenPVDevice, (obj), TYPE_XEN_PV_DEVICE) | |
43 | ||
44 | typedef struct XenPVDevice { | |
45 | /*< private >*/ | |
46 | PCIDevice parent_obj; | |
47 | /*< public >*/ | |
48 | uint16_t vendor_id; | |
49 | uint16_t device_id; | |
50 | uint8_t revision; | |
51 | uint32_t size; | |
52 | MemoryRegion mmio; | |
53 | } XenPVDevice; | |
54 | ||
55 | static uint64_t xen_pv_mmio_read(void *opaque, hwaddr addr, | |
56 | unsigned size) | |
57 | { | |
58 | trace_xen_pv_mmio_read(addr); | |
59 | ||
60 | return ~(uint64_t)0; | |
61 | } | |
62 | ||
63 | static void xen_pv_mmio_write(void *opaque, hwaddr addr, | |
64 | uint64_t val, unsigned size) | |
65 | { | |
66 | trace_xen_pv_mmio_write(addr); | |
67 | } | |
68 | ||
69 | static const MemoryRegionOps xen_pv_mmio_ops = { | |
70 | .read = &xen_pv_mmio_read, | |
71 | .write = &xen_pv_mmio_write, | |
72 | .endianness = DEVICE_LITTLE_ENDIAN, | |
73 | }; | |
74 | ||
1dd6af73 ID |
75 | static const VMStateDescription vmstate_xen_pvdevice = { |
76 | .name = "xen-pvdevice", | |
77 | .version_id = 1, | |
78 | .minimum_version_id = 1, | |
79 | .fields = (VMStateField[]) { | |
80 | VMSTATE_PCI_DEVICE(parent_obj, XenPVDevice), | |
81 | VMSTATE_END_OF_LIST() | |
82 | } | |
83 | }; | |
84 | ||
c6b14aed | 85 | static void xen_pv_realize(PCIDevice *pci_dev, Error **errp) |
8fbab3b6 PD |
86 | { |
87 | XenPVDevice *d = XEN_PV_DEVICE(pci_dev); | |
88 | uint8_t *pci_conf; | |
89 | ||
539891a8 | 90 | /* device-id property must always be supplied */ |
c6b14aed C |
91 | if (d->device_id == 0xffff) { |
92 | error_setg(errp, "Device ID invalid, it must always be supplied"); | |
93 | return; | |
94 | } | |
539891a8 | 95 | |
8fbab3b6 PD |
96 | pci_conf = pci_dev->config; |
97 | ||
98 | pci_set_word(pci_conf + PCI_VENDOR_ID, d->vendor_id); | |
99 | pci_set_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID, d->vendor_id); | |
100 | pci_set_word(pci_conf + PCI_DEVICE_ID, d->device_id); | |
101 | pci_set_word(pci_conf + PCI_SUBSYSTEM_ID, d->device_id); | |
102 | pci_set_byte(pci_conf + PCI_REVISION_ID, d->revision); | |
103 | ||
104 | pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_MEMORY); | |
105 | ||
106 | pci_config_set_prog_interface(pci_conf, 0); | |
107 | ||
108 | pci_conf[PCI_INTERRUPT_PIN] = 1; | |
109 | ||
110 | memory_region_init_io(&d->mmio, NULL, &xen_pv_mmio_ops, d, | |
111 | "mmio", d->size); | |
112 | ||
113 | pci_register_bar(pci_dev, 1, PCI_BASE_ADDRESS_MEM_PREFETCH, | |
114 | &d->mmio); | |
8fbab3b6 PD |
115 | } |
116 | ||
117 | static Property xen_pv_props[] = { | |
118 | DEFINE_PROP_UINT16("vendor-id", XenPVDevice, vendor_id, PCI_VENDOR_ID_XEN), | |
539891a8 | 119 | DEFINE_PROP_UINT16("device-id", XenPVDevice, device_id, 0xffff), |
8fbab3b6 PD |
120 | DEFINE_PROP_UINT8("revision", XenPVDevice, revision, 0x01), |
121 | DEFINE_PROP_UINT32("size", XenPVDevice, size, 0x400000), | |
122 | DEFINE_PROP_END_OF_LIST() | |
123 | }; | |
124 | ||
125 | static void xen_pv_class_init(ObjectClass *klass, void *data) | |
126 | { | |
127 | DeviceClass *dc = DEVICE_CLASS(klass); | |
128 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | |
129 | ||
c6b14aed | 130 | k->realize = xen_pv_realize; |
8fbab3b6 PD |
131 | k->class_id = PCI_CLASS_SYSTEM_OTHER; |
132 | dc->desc = "Xen PV Device"; | |
133 | dc->props = xen_pv_props; | |
1dd6af73 | 134 | dc->vmsd = &vmstate_xen_pvdevice; |
8fbab3b6 PD |
135 | } |
136 | ||
137 | static const TypeInfo xen_pv_type_info = { | |
138 | .name = TYPE_XEN_PV_DEVICE, | |
139 | .parent = TYPE_PCI_DEVICE, | |
140 | .instance_size = sizeof(XenPVDevice), | |
141 | .class_init = xen_pv_class_init, | |
fd3b02c8 EH |
142 | .interfaces = (InterfaceInfo[]) { |
143 | { INTERFACE_CONVENTIONAL_PCI_DEVICE }, | |
144 | { }, | |
145 | }, | |
8fbab3b6 PD |
146 | }; |
147 | ||
148 | static void xen_pv_register_types(void) | |
149 | { | |
150 | type_register_static(&xen_pv_type_info); | |
151 | } | |
152 | ||
153 | type_init(xen_pv_register_types) |