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10#include "qemu/osdep.h"
11#include "qapi/error.h"
12#include "qemu/module.h"
13#include "hw/pci/pci.h"
14#include "hw/pci/pci_bus.h"
15#include "hw/pci/pci_bridge.h"
16#include "hw/pci/msi.h"
17#include "hw/pci/shpc.h"
18#include "hw/pci/slotid_cap.h"
19#include "hw/qdev-properties.h"
20#include "qom/object.h"
21
22struct PCIEPCIBridge {
23
24 PCIBridge parent_obj;
25
26 OnOffAuto msi;
27 MemoryRegion shpc_bar;
28
29};
30
31#define TYPE_PCIE_PCI_BRIDGE_DEV "pcie-pci-bridge"
32OBJECT_DECLARE_SIMPLE_TYPE(PCIEPCIBridge, PCIE_PCI_BRIDGE_DEV)
33
34static void pcie_pci_bridge_realize(PCIDevice *d, Error **errp)
35{
36 PCIBridge *br = PCI_BRIDGE(d);
37 PCIEPCIBridge *pcie_br = PCIE_PCI_BRIDGE_DEV(d);
38 int rc, pos;
39
40 pci_bridge_initfn(d, TYPE_PCI_BUS);
41
42 d->config[PCI_INTERRUPT_PIN] = 0x1;
43 memory_region_init(&pcie_br->shpc_bar, OBJECT(d), "shpc-bar",
44 shpc_bar_size(d));
45 rc = shpc_init(d, &br->sec_bus, &pcie_br->shpc_bar, 0, errp);
46 if (rc) {
47 goto error;
48 }
49
50 rc = pcie_cap_init(d, 0, PCI_EXP_TYPE_PCI_BRIDGE, 0, errp);
51 if (rc < 0) {
52 goto cap_error;
53 }
54
55 pos = pci_add_capability(d, PCI_CAP_ID_PM, 0, PCI_PM_SIZEOF, errp);
56 if (pos < 0) {
57 goto pm_error;
58 }
59 d->exp.pm_cap = pos;
60 pci_set_word(d->config + pos + PCI_PM_PMC, 0x3);
61
62 pcie_cap_arifwd_init(d);
63 pcie_cap_deverr_init(d);
64
65 rc = pcie_aer_init(d, PCI_ERR_VER, 0x100, PCI_ERR_SIZEOF, errp);
66 if (rc < 0) {
67 goto aer_error;
68 }
69
70 Error *local_err = NULL;
71 if (pcie_br->msi != ON_OFF_AUTO_OFF) {
72 rc = msi_init(d, 0, 1, true, true, &local_err);
73 if (rc < 0) {
74 assert(rc == -ENOTSUP);
75 if (pcie_br->msi != ON_OFF_AUTO_ON) {
76 error_free(local_err);
77 } else {
78
79 error_propagate(errp, local_err);
80 goto msi_error;
81 }
82 }
83 }
84 pci_register_bar(d, 0, PCI_BASE_ADDRESS_SPACE_MEMORY |
85 PCI_BASE_ADDRESS_MEM_TYPE_64, &pcie_br->shpc_bar);
86 return;
87
88msi_error:
89 pcie_aer_exit(d);
90aer_error:
91pm_error:
92 pcie_cap_exit(d);
93cap_error:
94 shpc_cleanup(d, &pcie_br->shpc_bar);
95error:
96 pci_bridge_exitfn(d);
97}
98
99static void pcie_pci_bridge_exit(PCIDevice *d)
100{
101 PCIEPCIBridge *bridge_dev = PCIE_PCI_BRIDGE_DEV(d);
102 pcie_cap_exit(d);
103 shpc_cleanup(d, &bridge_dev->shpc_bar);
104 pci_bridge_exitfn(d);
105}
106
107static void pcie_pci_bridge_reset(DeviceState *qdev)
108{
109 PCIDevice *d = PCI_DEVICE(qdev);
110 pci_bridge_reset(qdev);
111 if (msi_present(d)) {
112 msi_reset(d);
113 }
114 shpc_reset(d);
115}
116
117static void pcie_pci_bridge_write_config(PCIDevice *d,
118 uint32_t address, uint32_t val, int len)
119{
120 pci_bridge_write_config(d, address, val, len);
121 if (msi_present(d)) {
122 msi_write_config(d, address, val, len);
123 }
124 shpc_cap_write_config(d, address, val, len);
125}
126
127static Property pcie_pci_bridge_dev_properties[] = {
128 DEFINE_PROP_ON_OFF_AUTO("msi", PCIEPCIBridge, msi, ON_OFF_AUTO_AUTO),
129 DEFINE_PROP_END_OF_LIST(),
130};
131
132static const VMStateDescription pcie_pci_bridge_dev_vmstate = {
133 .name = TYPE_PCIE_PCI_BRIDGE_DEV,
134 .priority = MIG_PRI_PCI_BUS,
135 .fields = (VMStateField[]) {
136 VMSTATE_PCI_DEVICE(parent_obj, PCIBridge),
137 SHPC_VMSTATE(shpc, PCIDevice, NULL),
138 VMSTATE_END_OF_LIST()
139 }
140};
141
142static void pcie_pci_bridge_class_init(ObjectClass *klass, void *data)
143{
144 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
145 DeviceClass *dc = DEVICE_CLASS(klass);
146 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
147
148 k->is_bridge = true;
149 k->vendor_id = PCI_VENDOR_ID_REDHAT;
150 k->device_id = PCI_DEVICE_ID_REDHAT_PCIE_BRIDGE;
151 k->realize = pcie_pci_bridge_realize;
152 k->exit = pcie_pci_bridge_exit;
153 k->config_write = pcie_pci_bridge_write_config;
154 dc->vmsd = &pcie_pci_bridge_dev_vmstate;
155 device_class_set_props(dc, pcie_pci_bridge_dev_properties);
156 dc->reset = &pcie_pci_bridge_reset;
157 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
158 hc->plug = pci_bridge_dev_plug_cb;
159 hc->unplug = pci_bridge_dev_unplug_cb;
160 hc->unplug_request = pci_bridge_dev_unplug_request_cb;
161}
162
163static const TypeInfo pcie_pci_bridge_info = {
164 .name = TYPE_PCIE_PCI_BRIDGE_DEV,
165 .parent = TYPE_PCI_BRIDGE,
166 .instance_size = sizeof(PCIEPCIBridge),
167 .class_init = pcie_pci_bridge_class_init,
168 .interfaces = (InterfaceInfo[]) {
169 { TYPE_HOTPLUG_HANDLER },
170 { INTERFACE_PCIE_DEVICE },
171 { },
172 }
173};
174
175static void pciepci_register(void)
176{
177 type_register_static(&pcie_pci_bridge_info);
178}
179
180type_init(pciepci_register);
181
