These changes are the raw update to qemu-2.6.
[kvmfornfv.git] / qemu / hw / pci-host / gpex.c
1 /*
2  * QEMU Generic PCI Express Bridge Emulation
3  *
4  * Copyright (C) 2015 Alexander Graf <agraf@suse.de>
5  *
6  * Code loosely based on q35.c.
7  *
8  * Permission is hereby granted, free of charge, to any person obtaining a copy
9  * of this software and associated documentation files (the "Software"), to deal
10  * in the Software without restriction, including without limitation the rights
11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12  * copies of the Software, and to permit persons to whom the Software is
13  * furnished to do so, subject to the following conditions:
14  *
15  * The above copyright notice and this permission notice shall be included in
16  * all copies or substantial portions of the Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24  * THE SOFTWARE.
25  *
26  * Check out these documents for more information on the device:
27  *
28  * http://www.kernel.org/doc/Documentation/devicetree/bindings/pci/host-generic-pci.txt
29  * http://www.firmware.org/1275/practice/imap/imap0_9d.pdf
30  */
31 #include "qemu/osdep.h"
32 #include "hw/hw.h"
33 #include "hw/pci-host/gpex.h"
34
35 /****************************************************************************
36  * GPEX host
37  */
38
39 static void gpex_set_irq(void *opaque, int irq_num, int level)
40 {
41     GPEXHost *s = opaque;
42
43     qemu_set_irq(s->irq[irq_num], level);
44 }
45
46 static void gpex_host_realize(DeviceState *dev, Error **errp)
47 {
48     PCIHostState *pci = PCI_HOST_BRIDGE(dev);
49     GPEXHost *s = GPEX_HOST(dev);
50     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
51     PCIExpressHost *pex = PCIE_HOST_BRIDGE(dev);
52     int i;
53
54     pcie_host_mmcfg_init(pex, PCIE_MMCFG_SIZE_MAX);
55     memory_region_init(&s->io_mmio, OBJECT(s), "gpex_mmio", UINT64_MAX);
56     memory_region_init(&s->io_ioport, OBJECT(s), "gpex_ioport", 64 * 1024);
57
58     sysbus_init_mmio(sbd, &pex->mmio);
59     sysbus_init_mmio(sbd, &s->io_mmio);
60     sysbus_init_mmio(sbd, &s->io_ioport);
61     for (i = 0; i < GPEX_NUM_IRQS; i++) {
62         sysbus_init_irq(sbd, &s->irq[i]);
63     }
64
65     pci->bus = pci_register_bus(dev, "pcie.0", gpex_set_irq,
66                                 pci_swizzle_map_irq_fn, s, &s->io_mmio,
67                                 &s->io_ioport, 0, 4, TYPE_PCIE_BUS);
68
69     qdev_set_parent_bus(DEVICE(&s->gpex_root), BUS(pci->bus));
70     qdev_init_nofail(DEVICE(&s->gpex_root));
71 }
72
73 static const char *gpex_host_root_bus_path(PCIHostState *host_bridge,
74                                           PCIBus *rootbus)
75 {
76     return "0000:00";
77 }
78
79 static void gpex_host_class_init(ObjectClass *klass, void *data)
80 {
81     DeviceClass *dc = DEVICE_CLASS(klass);
82     PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_CLASS(klass);
83
84     hc->root_bus_path = gpex_host_root_bus_path;
85     dc->realize = gpex_host_realize;
86     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
87     dc->fw_name = "pci";
88 }
89
90 static void gpex_host_initfn(Object *obj)
91 {
92     GPEXHost *s = GPEX_HOST(obj);
93     GPEXRootState *root = &s->gpex_root;
94
95     object_initialize(root, sizeof(*root), TYPE_GPEX_ROOT_DEVICE);
96     object_property_add_child(obj, "gpex_root", OBJECT(root), NULL);
97     qdev_prop_set_uint32(DEVICE(root), "addr", PCI_DEVFN(0, 0));
98     qdev_prop_set_bit(DEVICE(root), "multifunction", false);
99 }
100
101 static const TypeInfo gpex_host_info = {
102     .name       = TYPE_GPEX_HOST,
103     .parent     = TYPE_PCIE_HOST_BRIDGE,
104     .instance_size = sizeof(GPEXHost),
105     .instance_init = gpex_host_initfn,
106     .class_init = gpex_host_class_init,
107 };
108
109 /****************************************************************************
110  * GPEX Root D0:F0
111  */
112
113 static const VMStateDescription vmstate_gpex_root = {
114     .name = "gpex_root",
115     .version_id = 1,
116     .minimum_version_id = 1,
117     .fields = (VMStateField[]) {
118         VMSTATE_PCI_DEVICE(parent_obj, GPEXRootState),
119         VMSTATE_END_OF_LIST()
120     }
121 };
122
123 static void gpex_root_class_init(ObjectClass *klass, void *data)
124 {
125     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
126     DeviceClass *dc = DEVICE_CLASS(klass);
127
128     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
129     dc->desc = "QEMU generic PCIe host bridge";
130     dc->vmsd = &vmstate_gpex_root;
131     k->vendor_id = PCI_VENDOR_ID_REDHAT;
132     k->device_id = PCI_DEVICE_ID_REDHAT_PCIE_HOST;
133     k->revision = 0;
134     k->class_id = PCI_CLASS_BRIDGE_HOST;
135     /*
136      * PCI-facing part of the host bridge, not usable without the
137      * host-facing part, which can't be device_add'ed, yet.
138      */
139     dc->cannot_instantiate_with_device_add_yet = true;
140 }
141
142 static const TypeInfo gpex_root_info = {
143     .name = TYPE_GPEX_ROOT_DEVICE,
144     .parent = TYPE_PCI_DEVICE,
145     .instance_size = sizeof(GPEXRootState),
146     .class_init = gpex_root_class_init,
147 };
148
149 static void gpex_register(void)
150 {
151     type_register_static(&gpex_root_info);
152     type_register_static(&gpex_host_info);
153 }
154
155 type_init(gpex_register)