meson: convert hw/9pfs, cleanup
[qemu.git] / hw / i386 / xen / xen_pvdevice.c
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
32 #include "qemu/osdep.h"
33 #include "qapi/error.h"
34 #include "qemu/module.h"
35 #include "hw/pci/pci.h"
36 #include "hw/qdev-properties.h"
37 #include "migration/vmstate.h"
38 #include "trace.h"
39
40 #define TYPE_XEN_PV_DEVICE "xen-pvdevice"
41
42 #define XEN_PV_DEVICE(obj) \
43 OBJECT_CHECK(XenPVDevice, (obj), TYPE_XEN_PV_DEVICE)
44
45 typedef struct XenPVDevice {
46 /*< private >*/
47 PCIDevice parent_obj;
48 /*< public >*/
49 uint16_t vendor_id;
50 uint16_t device_id;
51 uint8_t revision;
52 uint32_t size;
53 MemoryRegion mmio;
54 } XenPVDevice;
55
56 static uint64_t xen_pv_mmio_read(void *opaque, hwaddr addr,
57 unsigned size)
58 {
59 trace_xen_pv_mmio_read(addr);
60
61 return ~(uint64_t)0;
62 }
63
64 static void xen_pv_mmio_write(void *opaque, hwaddr addr,
65 uint64_t val, unsigned size)
66 {
67 trace_xen_pv_mmio_write(addr);
68 }
69
70 static const MemoryRegionOps xen_pv_mmio_ops = {
71 .read = &xen_pv_mmio_read,
72 .write = &xen_pv_mmio_write,
73 .endianness = DEVICE_LITTLE_ENDIAN,
74 };
75
76 static const VMStateDescription vmstate_xen_pvdevice = {
77 .name = "xen-pvdevice",
78 .version_id = 1,
79 .minimum_version_id = 1,
80 .fields = (VMStateField[]) {
81 VMSTATE_PCI_DEVICE(parent_obj, XenPVDevice),
82 VMSTATE_END_OF_LIST()
83 }
84 };
85
86 static void xen_pv_realize(PCIDevice *pci_dev, Error **errp)
87 {
88 XenPVDevice *d = XEN_PV_DEVICE(pci_dev);
89 uint8_t *pci_conf;
90
91 /* device-id property must always be supplied */
92 if (d->device_id == 0xffff) {
93 error_setg(errp, "Device ID invalid, it must always be supplied");
94 return;
95 }
96
97 pci_conf = pci_dev->config;
98
99 pci_set_word(pci_conf + PCI_VENDOR_ID, d->vendor_id);
100 pci_set_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID, d->vendor_id);
101 pci_set_word(pci_conf + PCI_DEVICE_ID, d->device_id);
102 pci_set_word(pci_conf + PCI_SUBSYSTEM_ID, d->device_id);
103 pci_set_byte(pci_conf + PCI_REVISION_ID, d->revision);
104
105 pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_MEMORY);
106
107 pci_config_set_prog_interface(pci_conf, 0);
108
109 pci_conf[PCI_INTERRUPT_PIN] = 1;
110
111 memory_region_init_io(&d->mmio, NULL, &xen_pv_mmio_ops, d,
112 "mmio", d->size);
113
114 pci_register_bar(pci_dev, 1, PCI_BASE_ADDRESS_MEM_PREFETCH,
115 &d->mmio);
116 }
117
118 static Property xen_pv_props[] = {
119 DEFINE_PROP_UINT16("vendor-id", XenPVDevice, vendor_id, PCI_VENDOR_ID_XEN),
120 DEFINE_PROP_UINT16("device-id", XenPVDevice, device_id, 0xffff),
121 DEFINE_PROP_UINT8("revision", XenPVDevice, revision, 0x01),
122 DEFINE_PROP_UINT32("size", XenPVDevice, size, 0x400000),
123 DEFINE_PROP_END_OF_LIST()
124 };
125
126 static void xen_pv_class_init(ObjectClass *klass, void *data)
127 {
128 DeviceClass *dc = DEVICE_CLASS(klass);
129 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
130
131 k->realize = xen_pv_realize;
132 k->class_id = PCI_CLASS_SYSTEM_OTHER;
133 dc->desc = "Xen PV Device";
134 device_class_set_props(dc, xen_pv_props);
135 dc->vmsd = &vmstate_xen_pvdevice;
136 }
137
138 static const TypeInfo xen_pv_type_info = {
139 .name = TYPE_XEN_PV_DEVICE,
140 .parent = TYPE_PCI_DEVICE,
141 .instance_size = sizeof(XenPVDevice),
142 .class_init = xen_pv_class_init,
143 .interfaces = (InterfaceInfo[]) {
144 { INTERFACE_CONVENTIONAL_PCI_DEVICE },
145 { },
146 },
147 };
148
149 static void xen_pv_register_types(void)
150 {
151 type_register_static(&xen_pv_type_info);
152 }
153
154 type_init(xen_pv_register_types)