root / hw / xen / xen_pvdevice.c @ 8fbab3b6
History | View | Annotate | Download (4.1 kB)
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 "hw/hw.h" |
33 |
#include "hw/pci/pci.h" |
34 |
#include "trace.h" |
35 |
|
36 |
#define TYPE_XEN_PV_DEVICE "xen-pvdevice" |
37 |
|
38 |
#define XEN_PV_DEVICE(obj) \
|
39 |
OBJECT_CHECK(XenPVDevice, (obj), TYPE_XEN_PV_DEVICE) |
40 |
|
41 |
typedef struct XenPVDevice { |
42 |
/*< private >*/
|
43 |
PCIDevice parent_obj; |
44 |
/*< public >*/
|
45 |
uint16_t vendor_id; |
46 |
uint16_t device_id; |
47 |
uint8_t revision; |
48 |
uint32_t size; |
49 |
MemoryRegion mmio; |
50 |
} XenPVDevice; |
51 |
|
52 |
static uint64_t xen_pv_mmio_read(void *opaque, hwaddr addr, |
53 |
unsigned size)
|
54 |
{ |
55 |
trace_xen_pv_mmio_read(addr); |
56 |
|
57 |
return ~(uint64_t)0; |
58 |
} |
59 |
|
60 |
static void xen_pv_mmio_write(void *opaque, hwaddr addr, |
61 |
uint64_t val, unsigned size)
|
62 |
{ |
63 |
trace_xen_pv_mmio_write(addr); |
64 |
} |
65 |
|
66 |
static const MemoryRegionOps xen_pv_mmio_ops = { |
67 |
.read = &xen_pv_mmio_read, |
68 |
.write = &xen_pv_mmio_write, |
69 |
.endianness = DEVICE_LITTLE_ENDIAN, |
70 |
}; |
71 |
|
72 |
static int xen_pv_init(PCIDevice *pci_dev) |
73 |
{ |
74 |
XenPVDevice *d = XEN_PV_DEVICE(pci_dev); |
75 |
uint8_t *pci_conf; |
76 |
|
77 |
pci_conf = pci_dev->config; |
78 |
|
79 |
pci_set_word(pci_conf + PCI_VENDOR_ID, d->vendor_id); |
80 |
pci_set_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID, d->vendor_id); |
81 |
pci_set_word(pci_conf + PCI_DEVICE_ID, d->device_id); |
82 |
pci_set_word(pci_conf + PCI_SUBSYSTEM_ID, d->device_id); |
83 |
pci_set_byte(pci_conf + PCI_REVISION_ID, d->revision); |
84 |
|
85 |
pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_MEMORY); |
86 |
|
87 |
pci_config_set_prog_interface(pci_conf, 0);
|
88 |
|
89 |
pci_conf[PCI_INTERRUPT_PIN] = 1;
|
90 |
|
91 |
memory_region_init_io(&d->mmio, NULL, &xen_pv_mmio_ops, d,
|
92 |
"mmio", d->size);
|
93 |
|
94 |
pci_register_bar(pci_dev, 1, PCI_BASE_ADDRESS_MEM_PREFETCH,
|
95 |
&d->mmio); |
96 |
|
97 |
return 0; |
98 |
} |
99 |
|
100 |
static Property xen_pv_props[] = {
|
101 |
DEFINE_PROP_UINT16("vendor-id", XenPVDevice, vendor_id, PCI_VENDOR_ID_XEN),
|
102 |
DEFINE_PROP_UINT16("device-id", XenPVDevice, device_id, PCI_DEVICE_ID_XEN_PVDEVICE),
|
103 |
DEFINE_PROP_UINT8("revision", XenPVDevice, revision, 0x01), |
104 |
DEFINE_PROP_UINT32("size", XenPVDevice, size, 0x400000), |
105 |
DEFINE_PROP_END_OF_LIST() |
106 |
}; |
107 |
|
108 |
static void xen_pv_class_init(ObjectClass *klass, void *data) |
109 |
{ |
110 |
DeviceClass *dc = DEVICE_CLASS(klass); |
111 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
112 |
|
113 |
k->init = xen_pv_init; |
114 |
k->class_id = PCI_CLASS_SYSTEM_OTHER; |
115 |
dc->desc = "Xen PV Device";
|
116 |
dc->props = xen_pv_props; |
117 |
} |
118 |
|
119 |
static const TypeInfo xen_pv_type_info = { |
120 |
.name = TYPE_XEN_PV_DEVICE, |
121 |
.parent = TYPE_PCI_DEVICE, |
122 |
.instance_size = sizeof(XenPVDevice),
|
123 |
.class_init = xen_pv_class_init, |
124 |
}; |
125 |
|
126 |
static void xen_pv_register_types(void) |
127 |
{ |
128 |
type_register_static(&xen_pv_type_info); |
129 |
} |
130 |
|
131 |
type_init(xen_pv_register_types) |