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-bus.h"
20 #include "hw/virtio/virtio-crypto.h"
22 typedef struct VirtIOPCIProxy VirtIOPCIProxy;
23 typedef struct VirtIOCryptoPCI VirtIOCryptoPCI;
27 typedef struct VirtioBusState VirtioPCIBusState;
28 typedef struct VirtioBusClass VirtioPCIBusClass;
30 #define TYPE_VIRTIO_PCI_BUS "virtio-pci-bus"
31 #define VIRTIO_PCI_BUS(obj) \
32 OBJECT_CHECK(VirtioPCIBusState, (obj), TYPE_VIRTIO_PCI_BUS)
33 #define VIRTIO_PCI_BUS_GET_CLASS(obj) \
34 OBJECT_GET_CLASS(VirtioPCIBusClass, obj, TYPE_VIRTIO_PCI_BUS)
35 #define VIRTIO_PCI_BUS_CLASS(klass) \
36 OBJECT_CLASS_CHECK(VirtioPCIBusClass, klass, TYPE_VIRTIO_PCI_BUS)
39 VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT,
40 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT,
41 VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT,
42 VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT,
43 VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT,
44 VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT,
45 VIRTIO_PCI_FLAG_ATS_BIT,
46 VIRTIO_PCI_FLAG_INIT_DEVERR_BIT,
47 VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT,
48 VIRTIO_PCI_FLAG_INIT_PM_BIT,
51 /* Need to activate work-arounds for buggy guests at vmstate load. */
52 #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION \
53 (1 << VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT)
55 /* Performance improves when virtqueue kick processing is decoupled from the
56 * vcpu thread using ioeventfd for some devices. */
57 #define VIRTIO_PCI_FLAG_USE_IOEVENTFD (1 << VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT)
59 /* virtio version flags */
60 #define VIRTIO_PCI_FLAG_DISABLE_PCIE (1 << VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT)
62 /* migrate extra state */
63 #define VIRTIO_PCI_FLAG_MIGRATE_EXTRA (1 << VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT)
65 /* have pio notification for modern device ? */
66 #define VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY \
67 (1 << VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT)
69 /* page per vq flag to be used by split drivers within guests */
70 #define VIRTIO_PCI_FLAG_PAGE_PER_VQ \
71 (1 << VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT)
73 /* address space translation service */
74 #define VIRTIO_PCI_FLAG_ATS (1 << VIRTIO_PCI_FLAG_ATS_BIT)
76 /* Init error enabling flags */
77 #define VIRTIO_PCI_FLAG_INIT_DEVERR (1 << VIRTIO_PCI_FLAG_INIT_DEVERR_BIT)
79 /* Init Link Control register */
80 #define VIRTIO_PCI_FLAG_INIT_LNKCTL (1 << VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT)
82 /* Init Power Management */
83 #define VIRTIO_PCI_FLAG_INIT_PM (1 << VIRTIO_PCI_FLAG_INIT_PM_BIT)
92 * virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
94 #define TYPE_VIRTIO_PCI "virtio-pci"
95 #define VIRTIO_PCI_GET_CLASS(obj) \
96 OBJECT_GET_CLASS(VirtioPCIClass, obj, TYPE_VIRTIO_PCI)
97 #define VIRTIO_PCI_CLASS(klass) \
98 OBJECT_CLASS_CHECK(VirtioPCIClass, klass, TYPE_VIRTIO_PCI)
99 #define VIRTIO_PCI(obj) \
100 OBJECT_CHECK(VirtIOPCIProxy, (obj), TYPE_VIRTIO_PCI)
102 typedef struct VirtioPCIClass {
103 PCIDeviceClass parent_class;
104 DeviceRealize parent_dc_realize;
105 void (*realize)(VirtIOPCIProxy *vpci_dev, Error **errp);
108 typedef struct VirtIOPCIRegion {
115 typedef struct VirtIOPCIQueue {
123 struct VirtIOPCIProxy {
128 VirtIOPCIRegion common;
130 VirtIOPCIRegion device;
131 VirtIOPCIRegion notify;
132 VirtIOPCIRegion notify_pio;
134 VirtIOPCIRegion regs[5];
136 MemoryRegion modern_bar;
138 uint32_t legacy_io_bar_idx;
139 uint32_t msix_bar_idx;
140 uint32_t modern_io_bar_idx;
141 uint32_t modern_mem_bar_idx;
145 bool ignore_backend_features;
146 OnOffAuto disable_legacy;
151 uint32_t guest_features[2];
152 VirtIOPCIQueue vqs[VIRTIO_QUEUE_MAX];
154 VirtIOIRQFD *vector_irqfd;
155 int nvqs_with_notifiers;
159 static inline bool virtio_pci_modern(VirtIOPCIProxy *proxy)
161 return !proxy->disable_modern;
164 static inline bool virtio_pci_legacy(VirtIOPCIProxy *proxy)
166 return proxy->disable_legacy == ON_OFF_AUTO_OFF;
169 static inline void virtio_pci_force_virtio_1(VirtIOPCIProxy *proxy)
171 proxy->disable_modern = false;
172 proxy->disable_legacy = ON_OFF_AUTO_ON;
175 static inline void virtio_pci_disable_modern(VirtIOPCIProxy *proxy)
177 proxy->disable_modern = true;
181 * virtio-input-pci: This extends VirtioPCIProxy.
183 #define TYPE_VIRTIO_INPUT_PCI "virtio-input-pci"
186 * virtio-crypto-pci: This extends VirtioPCIProxy.
188 #define TYPE_VIRTIO_CRYPTO_PCI "virtio-crypto-pci"
189 #define VIRTIO_CRYPTO_PCI(obj) \
190 OBJECT_CHECK(VirtIOCryptoPCI, (obj), TYPE_VIRTIO_CRYPTO_PCI)
192 struct VirtIOCryptoPCI {
193 VirtIOPCIProxy parent_obj;
197 /* Virtio ABI version, if we increment this, we break the guest driver. */
198 #define VIRTIO_PCI_ABI_VERSION 0
200 /* Input for virtio_pci_types_register() */
201 typedef struct VirtioPCIDeviceTypeInfo {
203 * Common base class for the subclasses below.
205 * Required only if transitional_name or non_transitional_name is set.
207 * We need a separate base type instead of making all types
208 * inherit from generic_name for two reasons:
209 * 1) generic_name implements INTERFACE_PCIE_DEVICE, but
210 * transitional_name does not.
211 * 2) generic_name has the "disable-legacy" and "disable-modern"
212 * properties, transitional_name and non_transitional name don't.
214 const char *base_name;
216 * Generic device type. Optional.
218 * Supports both transitional and non-transitional modes,
219 * using the disable-legacy and disable-modern properties.
220 * If disable-legacy=auto, (non-)transitional mode is selected
221 * depending on the bus where the device is plugged.
223 * Implements both INTERFACE_PCIE_DEVICE and INTERFACE_CONVENTIONAL_PCI_DEVICE,
224 * but PCI Express is supported only in non-transitional mode.
226 * The only type implemented by QEMU 3.1 and older.
228 const char *generic_name;
230 * The transitional device type. Optional.
232 * Implements both INTERFACE_PCIE_DEVICE and INTERFACE_CONVENTIONAL_PCI_DEVICE.
234 const char *transitional_name;
236 * The non-transitional device type. Optional.
238 * Implements INTERFACE_CONVENTIONAL_PCI_DEVICE only.
240 const char *non_transitional_name;
242 /* Parent type. If NULL, TYPE_VIRTIO_PCI is used */
245 /* Same as TypeInfo fields: */
246 size_t instance_size;
247 void (*instance_init)(Object *obj);
248 void (*class_init)(ObjectClass *klass, void *data);
249 } VirtioPCIDeviceTypeInfo;
251 /* Register virtio-pci type(s). @t must be static. */
252 void virtio_pci_types_register(const VirtioPCIDeviceTypeInfo *t);