1ad3f7e31SWei Liu /* Copyright (c) Citrix Systems Inc.
2ad3f7e31SWei Liu * All rights reserved.
3ad3f7e31SWei Liu *
4ad3f7e31SWei Liu * Redistribution and use in source and binary forms,
5ad3f7e31SWei Liu * with or without modification, are permitted provided
6ad3f7e31SWei Liu * that the following conditions are met:
7ad3f7e31SWei Liu *
8ad3f7e31SWei Liu * * Redistributions of source code must retain the above
9ad3f7e31SWei Liu * copyright notice, this list of conditions and the
10ad3f7e31SWei Liu * following disclaimer.
11ad3f7e31SWei Liu * * Redistributions in binary form must reproduce the above
12ad3f7e31SWei Liu * copyright notice, this list of conditions and the
13ad3f7e31SWei Liu * following disclaimer in the documentation and/or other
14ad3f7e31SWei Liu * materials provided with the distribution.
15ad3f7e31SWei Liu *
16ad3f7e31SWei Liu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
17ad3f7e31SWei Liu * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
18ad3f7e31SWei Liu * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19ad3f7e31SWei Liu * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20ad3f7e31SWei Liu * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
21ad3f7e31SWei Liu * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22ad3f7e31SWei Liu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
23ad3f7e31SWei Liu * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24ad3f7e31SWei Liu * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25ad3f7e31SWei Liu * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26ad3f7e31SWei Liu * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
27ad3f7e31SWei Liu * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28ad3f7e31SWei Liu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29ad3f7e31SWei Liu * SUCH DAMAGE.
30ad3f7e31SWei Liu */
31ad3f7e31SWei Liu
32b6a0aa05SPeter Maydell #include "qemu/osdep.h"
33da34e65cSMarkus Armbruster #include "qapi/error.h"
340b8fa32fSMarkus Armbruster #include "qemu/module.h"
35edf5ca5dSMarkus Armbruster #include "hw/pci/pci_device.h"
36a27bd6c7SMarkus Armbruster #include "hw/qdev-properties.h"
37d6454270SMarkus Armbruster #include "migration/vmstate.h"
38ad3f7e31SWei Liu #include "trace.h"
39db1015e9SEduardo Habkost #include "qom/object.h"
40ad3f7e31SWei Liu
41ad3f7e31SWei Liu #define TYPE_XEN_PV_DEVICE "xen-pvdevice"
42ad3f7e31SWei Liu
438063396bSEduardo Habkost OBJECT_DECLARE_SIMPLE_TYPE(XenPVDevice, XEN_PV_DEVICE)
44ad3f7e31SWei Liu
45db1015e9SEduardo Habkost struct XenPVDevice {
46ad3f7e31SWei Liu /*< private >*/
47ad3f7e31SWei Liu PCIDevice parent_obj;
48ad3f7e31SWei Liu /*< public >*/
49ad3f7e31SWei Liu uint16_t vendor_id;
50ad3f7e31SWei Liu uint16_t device_id;
51ad3f7e31SWei Liu uint8_t revision;
52ad3f7e31SWei Liu uint32_t size;
53ad3f7e31SWei Liu MemoryRegion mmio;
54db1015e9SEduardo Habkost };
55ad3f7e31SWei Liu
xen_pv_mmio_read(void * opaque,hwaddr addr,unsigned size)56ad3f7e31SWei Liu static uint64_t xen_pv_mmio_read(void *opaque, hwaddr addr,
57ad3f7e31SWei Liu unsigned size)
58ad3f7e31SWei Liu {
59ad3f7e31SWei Liu trace_xen_pv_mmio_read(addr);
60ad3f7e31SWei Liu
61ad3f7e31SWei Liu return ~(uint64_t)0;
62ad3f7e31SWei Liu }
63ad3f7e31SWei Liu
xen_pv_mmio_write(void * opaque,hwaddr addr,uint64_t val,unsigned size)64ad3f7e31SWei Liu static void xen_pv_mmio_write(void *opaque, hwaddr addr,
65ad3f7e31SWei Liu uint64_t val, unsigned size)
66ad3f7e31SWei Liu {
67ad3f7e31SWei Liu trace_xen_pv_mmio_write(addr);
68ad3f7e31SWei Liu }
69ad3f7e31SWei Liu
70ad3f7e31SWei Liu static const MemoryRegionOps xen_pv_mmio_ops = {
71ad3f7e31SWei Liu .read = &xen_pv_mmio_read,
72ad3f7e31SWei Liu .write = &xen_pv_mmio_write,
73ad3f7e31SWei Liu .endianness = DEVICE_LITTLE_ENDIAN,
74ad3f7e31SWei Liu };
75ad3f7e31SWei Liu
761dd6af73SIgor Druzhinin static const VMStateDescription vmstate_xen_pvdevice = {
771dd6af73SIgor Druzhinin .name = "xen-pvdevice",
781dd6af73SIgor Druzhinin .version_id = 1,
791dd6af73SIgor Druzhinin .minimum_version_id = 1,
80*9231a017SRichard Henderson .fields = (const VMStateField[]) {
811dd6af73SIgor Druzhinin VMSTATE_PCI_DEVICE(parent_obj, XenPVDevice),
821dd6af73SIgor Druzhinin VMSTATE_END_OF_LIST()
831dd6af73SIgor Druzhinin }
841dd6af73SIgor Druzhinin };
851dd6af73SIgor Druzhinin
xen_pv_realize(PCIDevice * pci_dev,Error ** errp)86c6b14aedSCao jin static void xen_pv_realize(PCIDevice *pci_dev, Error **errp)
87ad3f7e31SWei Liu {
88ad3f7e31SWei Liu XenPVDevice *d = XEN_PV_DEVICE(pci_dev);
89ad3f7e31SWei Liu uint8_t *pci_conf;
90ad3f7e31SWei Liu
91ad3f7e31SWei Liu /* device-id property must always be supplied */
92c6b14aedSCao jin if (d->device_id == 0xffff) {
93c6b14aedSCao jin error_setg(errp, "Device ID invalid, it must always be supplied");
94c6b14aedSCao jin return;
95c6b14aedSCao jin }
96ad3f7e31SWei Liu
97ad3f7e31SWei Liu pci_conf = pci_dev->config;
98ad3f7e31SWei Liu
99ad3f7e31SWei Liu pci_set_word(pci_conf + PCI_VENDOR_ID, d->vendor_id);
100ad3f7e31SWei Liu pci_set_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID, d->vendor_id);
101ad3f7e31SWei Liu pci_set_word(pci_conf + PCI_DEVICE_ID, d->device_id);
102ad3f7e31SWei Liu pci_set_word(pci_conf + PCI_SUBSYSTEM_ID, d->device_id);
103ad3f7e31SWei Liu pci_set_byte(pci_conf + PCI_REVISION_ID, d->revision);
104ad3f7e31SWei Liu
105ad3f7e31SWei Liu pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_MEMORY);
106ad3f7e31SWei Liu
107ad3f7e31SWei Liu pci_config_set_prog_interface(pci_conf, 0);
108ad3f7e31SWei Liu
109ad3f7e31SWei Liu pci_conf[PCI_INTERRUPT_PIN] = 1;
110ad3f7e31SWei Liu
111ad3f7e31SWei Liu memory_region_init_io(&d->mmio, NULL, &xen_pv_mmio_ops, d,
112ad3f7e31SWei Liu "mmio", d->size);
113ad3f7e31SWei Liu
114ad3f7e31SWei Liu pci_register_bar(pci_dev, 1, PCI_BASE_ADDRESS_MEM_PREFETCH,
115ad3f7e31SWei Liu &d->mmio);
116ad3f7e31SWei Liu }
117ad3f7e31SWei Liu
118ad3f7e31SWei Liu static Property xen_pv_props[] = {
119ad3f7e31SWei Liu DEFINE_PROP_UINT16("vendor-id", XenPVDevice, vendor_id, PCI_VENDOR_ID_XEN),
120ad3f7e31SWei Liu DEFINE_PROP_UINT16("device-id", XenPVDevice, device_id, 0xffff),
121ad3f7e31SWei Liu DEFINE_PROP_UINT8("revision", XenPVDevice, revision, 0x01),
122ad3f7e31SWei Liu DEFINE_PROP_UINT32("size", XenPVDevice, size, 0x400000),
123ad3f7e31SWei Liu DEFINE_PROP_END_OF_LIST()
124ad3f7e31SWei Liu };
125ad3f7e31SWei Liu
xen_pv_class_init(ObjectClass * klass,void * data)126ad3f7e31SWei Liu static void xen_pv_class_init(ObjectClass *klass, void *data)
127ad3f7e31SWei Liu {
128ad3f7e31SWei Liu DeviceClass *dc = DEVICE_CLASS(klass);
129ad3f7e31SWei Liu PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
130ad3f7e31SWei Liu
131c6b14aedSCao jin k->realize = xen_pv_realize;
132ad3f7e31SWei Liu k->class_id = PCI_CLASS_SYSTEM_OTHER;
133ad3f7e31SWei Liu dc->desc = "Xen PV Device";
1344f67d30bSMarc-André Lureau device_class_set_props(dc, xen_pv_props);
1351dd6af73SIgor Druzhinin dc->vmsd = &vmstate_xen_pvdevice;
136ad3f7e31SWei Liu }
137ad3f7e31SWei Liu
138ad3f7e31SWei Liu static const TypeInfo xen_pv_type_info = {
139ad3f7e31SWei Liu .name = TYPE_XEN_PV_DEVICE,
140ad3f7e31SWei Liu .parent = TYPE_PCI_DEVICE,
141ad3f7e31SWei Liu .instance_size = sizeof(XenPVDevice),
142ad3f7e31SWei Liu .class_init = xen_pv_class_init,
143fd3b02c8SEduardo Habkost .interfaces = (InterfaceInfo[]) {
144fd3b02c8SEduardo Habkost { INTERFACE_CONVENTIONAL_PCI_DEVICE },
145fd3b02c8SEduardo Habkost { },
146fd3b02c8SEduardo Habkost },
147ad3f7e31SWei Liu };
148ad3f7e31SWei Liu
xen_pv_register_types(void)149ad3f7e31SWei Liu static void xen_pv_register_types(void)
150ad3f7e31SWei Liu {
151ad3f7e31SWei Liu type_register_static(&xen_pv_type_info);
152ad3f7e31SWei Liu }
153ad3f7e31SWei Liu
154ad3f7e31SWei Liu type_init(xen_pv_register_types)
155