4 * Copyright IBM, Corp. 2007
5 * Copyright (c) 2009 CodeSourcery
8 * Anthony Liguori <aliguori@us.ibm.com>
9 * Paul Brook <paul@codesourcery.com>
11 * This work is licensed under the terms of the GNU GPL, version 2. See
12 * the COPYING file in the top-level directory.
15 #ifndef QEMU_VIRTIO_PCI_H
16 #define QEMU_VIRTIO_PCI_H
18 #include "hw/pci/msi.h"
19 #include "hw/virtio/virtio-blk.h"
20 #include "hw/virtio/virtio-net.h"
21 #include "hw/virtio/virtio-serial.h"
22 #include "hw/virtio/virtio-bus.h"
23 #include "hw/virtio/virtio-gpu.h"
24 #include "hw/virtio/virtio-crypto.h"
26 typedef struct VirtIOPCIProxy VirtIOPCIProxy;
27 typedef struct VirtIOBlkPCI VirtIOBlkPCI;
28 typedef struct VirtIOSerialPCI VirtIOSerialPCI;
29 typedef struct VirtIONetPCI VirtIONetPCI;
30 typedef struct VirtIOGPUPCI VirtIOGPUPCI;
31 typedef struct VirtIOCryptoPCI VirtIOCryptoPCI;
35 typedef struct VirtioBusState VirtioPCIBusState;
36 typedef struct VirtioBusClass VirtioPCIBusClass;
38 #define TYPE_VIRTIO_PCI_BUS "virtio-pci-bus"
39 #define VIRTIO_PCI_BUS(obj) \
40 OBJECT_CHECK(VirtioPCIBusState, (obj), TYPE_VIRTIO_PCI_BUS)
41 #define VIRTIO_PCI_BUS_GET_CLASS(obj) \
42 OBJECT_GET_CLASS(VirtioPCIBusClass, obj, TYPE_VIRTIO_PCI_BUS)
43 #define VIRTIO_PCI_BUS_CLASS(klass) \
44 OBJECT_CLASS_CHECK(VirtioPCIBusClass, klass, TYPE_VIRTIO_PCI_BUS)
47 VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT,
48 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT,
49 VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT,
50 VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT,
51 VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT,
52 VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT,
53 VIRTIO_PCI_FLAG_ATS_BIT,
54 VIRTIO_PCI_FLAG_INIT_DEVERR_BIT,
55 VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT,
56 VIRTIO_PCI_FLAG_INIT_PM_BIT,
59 /* Need to activate work-arounds for buggy guests at vmstate load. */
60 #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION \
61 (1 << VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT)
63 /* Performance improves when virtqueue kick processing is decoupled from the
64 * vcpu thread using ioeventfd for some devices. */
65 #define VIRTIO_PCI_FLAG_USE_IOEVENTFD (1 << VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT)
67 /* virtio version flags */
68 #define VIRTIO_PCI_FLAG_DISABLE_PCIE (1 << VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT)
70 /* migrate extra state */
71 #define VIRTIO_PCI_FLAG_MIGRATE_EXTRA (1 << VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT)
73 /* have pio notification for modern device ? */
74 #define VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY \
75 (1 << VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT)
77 /* page per vq flag to be used by split drivers within guests */
78 #define VIRTIO_PCI_FLAG_PAGE_PER_VQ \
79 (1 << VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT)
81 /* address space translation service */
82 #define VIRTIO_PCI_FLAG_ATS (1 << VIRTIO_PCI_FLAG_ATS_BIT)
84 /* Init error enabling flags */
85 #define VIRTIO_PCI_FLAG_INIT_DEVERR (1 << VIRTIO_PCI_FLAG_INIT_DEVERR_BIT)
87 /* Init Link Control register */
88 #define VIRTIO_PCI_FLAG_INIT_LNKCTL (1 << VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT)
90 /* Init Power Management */
91 #define VIRTIO_PCI_FLAG_INIT_PM (1 << VIRTIO_PCI_FLAG_INIT_PM_BIT)
100 * virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
102 #define TYPE_VIRTIO_PCI "virtio-pci"
103 #define VIRTIO_PCI_GET_CLASS(obj) \
104 OBJECT_GET_CLASS(VirtioPCIClass, obj, TYPE_VIRTIO_PCI)
105 #define VIRTIO_PCI_CLASS(klass) \
106 OBJECT_CLASS_CHECK(VirtioPCIClass, klass, TYPE_VIRTIO_PCI)
107 #define VIRTIO_PCI(obj) \
108 OBJECT_CHECK(VirtIOPCIProxy, (obj), TYPE_VIRTIO_PCI)
110 typedef struct VirtioPCIClass {
111 PCIDeviceClass parent_class;
112 DeviceRealize parent_dc_realize;
113 void (*realize)(VirtIOPCIProxy *vpci_dev, Error **errp);
116 typedef struct VirtIOPCIRegion {
123 typedef struct VirtIOPCIQueue {
131 struct VirtIOPCIProxy {
136 VirtIOPCIRegion common;
138 VirtIOPCIRegion device;
139 VirtIOPCIRegion notify;
140 VirtIOPCIRegion notify_pio;
142 VirtIOPCIRegion regs[5];
144 MemoryRegion modern_bar;
146 uint32_t legacy_io_bar_idx;
147 uint32_t msix_bar_idx;
148 uint32_t modern_io_bar_idx;
149 uint32_t modern_mem_bar_idx;
153 bool ignore_backend_features;
154 OnOffAuto disable_legacy;
159 uint32_t guest_features[2];
160 VirtIOPCIQueue vqs[VIRTIO_QUEUE_MAX];
162 VirtIOIRQFD *vector_irqfd;
163 int nvqs_with_notifiers;
167 static inline bool virtio_pci_modern(VirtIOPCIProxy *proxy)
169 return !proxy->disable_modern;
172 static inline bool virtio_pci_legacy(VirtIOPCIProxy *proxy)
174 return proxy->disable_legacy == ON_OFF_AUTO_OFF;
177 static inline void virtio_pci_force_virtio_1(VirtIOPCIProxy *proxy)
179 proxy->disable_modern = false;
180 proxy->disable_legacy = ON_OFF_AUTO_ON;
183 static inline void virtio_pci_disable_modern(VirtIOPCIProxy *proxy)
185 proxy->disable_modern = true;
189 * virtio-blk-pci: This extends VirtioPCIProxy.
191 #define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci-base"
192 #define VIRTIO_BLK_PCI(obj) \
193 OBJECT_CHECK(VirtIOBlkPCI, (obj), TYPE_VIRTIO_BLK_PCI)
195 struct VirtIOBlkPCI {
196 VirtIOPCIProxy parent_obj;
201 * virtio-serial-pci: This extends VirtioPCIProxy.
203 #define TYPE_VIRTIO_SERIAL_PCI "virtio-serial-pci-base"
204 #define VIRTIO_SERIAL_PCI(obj) \
205 OBJECT_CHECK(VirtIOSerialPCI, (obj), TYPE_VIRTIO_SERIAL_PCI)
207 struct VirtIOSerialPCI {
208 VirtIOPCIProxy parent_obj;
213 * virtio-net-pci: This extends VirtioPCIProxy.
215 #define TYPE_VIRTIO_NET_PCI "virtio-net-pci-base"
216 #define VIRTIO_NET_PCI(obj) \
217 OBJECT_CHECK(VirtIONetPCI, (obj), TYPE_VIRTIO_NET_PCI)
219 struct VirtIONetPCI {
220 VirtIOPCIProxy parent_obj;
225 * virtio-input-pci: This extends VirtioPCIProxy.
227 #define TYPE_VIRTIO_INPUT_PCI "virtio-input-pci"
230 * virtio-gpu-pci: This extends VirtioPCIProxy.
232 #define TYPE_VIRTIO_GPU_PCI "virtio-gpu-pci"
233 #define VIRTIO_GPU_PCI(obj) \
234 OBJECT_CHECK(VirtIOGPUPCI, (obj), TYPE_VIRTIO_GPU_PCI)
236 struct VirtIOGPUPCI {
237 VirtIOPCIProxy parent_obj;
242 * virtio-crypto-pci: This extends VirtioPCIProxy.
244 #define TYPE_VIRTIO_CRYPTO_PCI "virtio-crypto-pci"
245 #define VIRTIO_CRYPTO_PCI(obj) \
246 OBJECT_CHECK(VirtIOCryptoPCI, (obj), TYPE_VIRTIO_CRYPTO_PCI)
248 struct VirtIOCryptoPCI {
249 VirtIOPCIProxy parent_obj;
253 /* Virtio ABI version, if we increment this, we break the guest driver. */
254 #define VIRTIO_PCI_ABI_VERSION 0
256 /* Input for virtio_pci_types_register() */
257 typedef struct VirtioPCIDeviceTypeInfo {
259 * Common base class for the subclasses below.
261 * Required only if transitional_name or non_transitional_name is set.
263 * We need a separate base type instead of making all types
264 * inherit from generic_name for two reasons:
265 * 1) generic_name implements INTERFACE_PCIE_DEVICE, but
266 * transitional_name does not.
267 * 2) generic_name has the "disable-legacy" and "disable-modern"
268 * properties, transitional_name and non_transitional name don't.
270 const char *base_name;
272 * Generic device type. Optional.
274 * Supports both transitional and non-transitional modes,
275 * using the disable-legacy and disable-modern properties.
276 * If disable-legacy=auto, (non-)transitional mode is selected
277 * depending on the bus where the device is plugged.
279 * Implements both INTERFACE_PCIE_DEVICE and INTERFACE_CONVENTIONAL_PCI_DEVICE,
280 * but PCI Express is supported only in non-transitional mode.
282 * The only type implemented by QEMU 3.1 and older.
284 const char *generic_name;
286 * The transitional device type. Optional.
288 * Implements both INTERFACE_PCIE_DEVICE and INTERFACE_CONVENTIONAL_PCI_DEVICE.
290 const char *transitional_name;
292 * The non-transitional device type. Optional.
294 * Implements INTERFACE_CONVENTIONAL_PCI_DEVICE only.
296 const char *non_transitional_name;
298 /* Parent type. If NULL, TYPE_VIRTIO_PCI is used */
301 /* Same as TypeInfo fields: */
302 size_t instance_size;
303 void (*instance_init)(Object *obj);
304 void (*class_init)(ObjectClass *klass, void *data);
305 } VirtioPCIDeviceTypeInfo;
307 /* Register virtio-pci type(s). @t must be static. */
308 void virtio_pci_types_register(const VirtioPCIDeviceTypeInfo *t);