1 /* 2 * Virtio PCI Bindings 3 * 4 * Copyright IBM, Corp. 2007 5 * Copyright (c) 2009 CodeSourcery 6 * 7 * Authors: 8 * Anthony Liguori <aliguori@us.ibm.com> 9 * Paul Brook <paul@codesourcery.com> 10 * 11 * This work is licensed under the terms of the GNU GPL, version 2. See 12 * the COPYING file in the top-level directory. 13 */ 14 15 #ifndef QEMU_VIRTIO_PCI_H 16 #define QEMU_VIRTIO_PCI_H 17 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-scsi.h" 23 #include "hw/virtio/virtio-bus.h" 24 #include "hw/virtio/virtio-gpu.h" 25 #include "hw/virtio/virtio-crypto.h" 26 #include "hw/virtio/vhost-user-scsi.h" 27 #if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX) 28 #include "hw/virtio/vhost-user-blk.h" 29 #endif 30 31 #ifdef CONFIG_VHOST_SCSI 32 #include "hw/virtio/vhost-scsi.h" 33 #endif 34 35 typedef struct VirtIOPCIProxy VirtIOPCIProxy; 36 typedef struct VirtIOBlkPCI VirtIOBlkPCI; 37 typedef struct VirtIOSCSIPCI VirtIOSCSIPCI; 38 typedef struct VirtIOSerialPCI VirtIOSerialPCI; 39 typedef struct VirtIONetPCI VirtIONetPCI; 40 typedef struct VHostSCSIPCI VHostSCSIPCI; 41 typedef struct VHostUserSCSIPCI VHostUserSCSIPCI; 42 typedef struct VHostUserBlkPCI VHostUserBlkPCI; 43 typedef struct VirtIOGPUPCI VirtIOGPUPCI; 44 typedef struct VirtIOCryptoPCI VirtIOCryptoPCI; 45 46 /* virtio-pci-bus */ 47 48 typedef struct VirtioBusState VirtioPCIBusState; 49 typedef struct VirtioBusClass VirtioPCIBusClass; 50 51 #define TYPE_VIRTIO_PCI_BUS "virtio-pci-bus" 52 #define VIRTIO_PCI_BUS(obj) \ 53 OBJECT_CHECK(VirtioPCIBusState, (obj), TYPE_VIRTIO_PCI_BUS) 54 #define VIRTIO_PCI_BUS_GET_CLASS(obj) \ 55 OBJECT_GET_CLASS(VirtioPCIBusClass, obj, TYPE_VIRTIO_PCI_BUS) 56 #define VIRTIO_PCI_BUS_CLASS(klass) \ 57 OBJECT_CLASS_CHECK(VirtioPCIBusClass, klass, TYPE_VIRTIO_PCI_BUS) 58 59 enum { 60 VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT, 61 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, 62 VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT, 63 VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT, 64 VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT, 65 VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT, 66 VIRTIO_PCI_FLAG_ATS_BIT, 67 VIRTIO_PCI_FLAG_INIT_DEVERR_BIT, 68 VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT, 69 VIRTIO_PCI_FLAG_INIT_PM_BIT, 70 }; 71 72 /* Need to activate work-arounds for buggy guests at vmstate load. */ 73 #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION \ 74 (1 << VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT) 75 76 /* Performance improves when virtqueue kick processing is decoupled from the 77 * vcpu thread using ioeventfd for some devices. */ 78 #define VIRTIO_PCI_FLAG_USE_IOEVENTFD (1 << VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT) 79 80 /* virtio version flags */ 81 #define VIRTIO_PCI_FLAG_DISABLE_PCIE (1 << VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT) 82 83 /* migrate extra state */ 84 #define VIRTIO_PCI_FLAG_MIGRATE_EXTRA (1 << VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT) 85 86 /* have pio notification for modern device ? */ 87 #define VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY \ 88 (1 << VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT) 89 90 /* page per vq flag to be used by split drivers within guests */ 91 #define VIRTIO_PCI_FLAG_PAGE_PER_VQ \ 92 (1 << VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT) 93 94 /* address space translation service */ 95 #define VIRTIO_PCI_FLAG_ATS (1 << VIRTIO_PCI_FLAG_ATS_BIT) 96 97 /* Init error enabling flags */ 98 #define VIRTIO_PCI_FLAG_INIT_DEVERR (1 << VIRTIO_PCI_FLAG_INIT_DEVERR_BIT) 99 100 /* Init Link Control register */ 101 #define VIRTIO_PCI_FLAG_INIT_LNKCTL (1 << VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT) 102 103 /* Init Power Management */ 104 #define VIRTIO_PCI_FLAG_INIT_PM (1 << VIRTIO_PCI_FLAG_INIT_PM_BIT) 105 106 typedef struct { 107 MSIMessage msg; 108 int virq; 109 unsigned int users; 110 } VirtIOIRQFD; 111 112 /* 113 * virtio-pci: This is the PCIDevice which has a virtio-pci-bus. 114 */ 115 #define TYPE_VIRTIO_PCI "virtio-pci" 116 #define VIRTIO_PCI_GET_CLASS(obj) \ 117 OBJECT_GET_CLASS(VirtioPCIClass, obj, TYPE_VIRTIO_PCI) 118 #define VIRTIO_PCI_CLASS(klass) \ 119 OBJECT_CLASS_CHECK(VirtioPCIClass, klass, TYPE_VIRTIO_PCI) 120 #define VIRTIO_PCI(obj) \ 121 OBJECT_CHECK(VirtIOPCIProxy, (obj), TYPE_VIRTIO_PCI) 122 123 typedef struct VirtioPCIClass { 124 PCIDeviceClass parent_class; 125 DeviceRealize parent_dc_realize; 126 void (*realize)(VirtIOPCIProxy *vpci_dev, Error **errp); 127 } VirtioPCIClass; 128 129 typedef struct VirtIOPCIRegion { 130 MemoryRegion mr; 131 uint32_t offset; 132 uint32_t size; 133 uint32_t type; 134 } VirtIOPCIRegion; 135 136 typedef struct VirtIOPCIQueue { 137 uint16_t num; 138 bool enabled; 139 uint32_t desc[2]; 140 uint32_t avail[2]; 141 uint32_t used[2]; 142 } VirtIOPCIQueue; 143 144 struct VirtIOPCIProxy { 145 PCIDevice pci_dev; 146 MemoryRegion bar; 147 union { 148 struct { 149 VirtIOPCIRegion common; 150 VirtIOPCIRegion isr; 151 VirtIOPCIRegion device; 152 VirtIOPCIRegion notify; 153 VirtIOPCIRegion notify_pio; 154 }; 155 VirtIOPCIRegion regs[5]; 156 }; 157 MemoryRegion modern_bar; 158 MemoryRegion io_bar; 159 uint32_t legacy_io_bar_idx; 160 uint32_t msix_bar_idx; 161 uint32_t modern_io_bar_idx; 162 uint32_t modern_mem_bar_idx; 163 int config_cap; 164 uint32_t flags; 165 bool disable_modern; 166 bool ignore_backend_features; 167 OnOffAuto disable_legacy; 168 uint32_t class_code; 169 uint32_t nvectors; 170 uint32_t dfselect; 171 uint32_t gfselect; 172 uint32_t guest_features[2]; 173 VirtIOPCIQueue vqs[VIRTIO_QUEUE_MAX]; 174 175 VirtIOIRQFD *vector_irqfd; 176 int nvqs_with_notifiers; 177 VirtioBusState bus; 178 }; 179 180 static inline bool virtio_pci_modern(VirtIOPCIProxy *proxy) 181 { 182 return !proxy->disable_modern; 183 } 184 185 static inline bool virtio_pci_legacy(VirtIOPCIProxy *proxy) 186 { 187 return proxy->disable_legacy == ON_OFF_AUTO_OFF; 188 } 189 190 static inline void virtio_pci_force_virtio_1(VirtIOPCIProxy *proxy) 191 { 192 proxy->disable_modern = false; 193 proxy->disable_legacy = ON_OFF_AUTO_ON; 194 } 195 196 static inline void virtio_pci_disable_modern(VirtIOPCIProxy *proxy) 197 { 198 proxy->disable_modern = true; 199 } 200 201 /* 202 * virtio-scsi-pci: This extends VirtioPCIProxy. 203 */ 204 #define TYPE_VIRTIO_SCSI_PCI "virtio-scsi-pci-base" 205 #define VIRTIO_SCSI_PCI(obj) \ 206 OBJECT_CHECK(VirtIOSCSIPCI, (obj), TYPE_VIRTIO_SCSI_PCI) 207 208 struct VirtIOSCSIPCI { 209 VirtIOPCIProxy parent_obj; 210 VirtIOSCSI vdev; 211 }; 212 213 #ifdef CONFIG_VHOST_SCSI 214 /* 215 * vhost-scsi-pci: This extends VirtioPCIProxy. 216 */ 217 #define TYPE_VHOST_SCSI_PCI "vhost-scsi-pci-base" 218 #define VHOST_SCSI_PCI(obj) \ 219 OBJECT_CHECK(VHostSCSIPCI, (obj), TYPE_VHOST_SCSI_PCI) 220 221 struct VHostSCSIPCI { 222 VirtIOPCIProxy parent_obj; 223 VHostSCSI vdev; 224 }; 225 #endif 226 227 #define TYPE_VHOST_USER_SCSI_PCI "vhost-user-scsi-pci-base" 228 #define VHOST_USER_SCSI_PCI(obj) \ 229 OBJECT_CHECK(VHostUserSCSIPCI, (obj), TYPE_VHOST_USER_SCSI_PCI) 230 231 struct VHostUserSCSIPCI { 232 VirtIOPCIProxy parent_obj; 233 VHostUserSCSI vdev; 234 }; 235 236 #if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX) 237 /* 238 * vhost-user-blk-pci: This extends VirtioPCIProxy. 239 */ 240 #define TYPE_VHOST_USER_BLK_PCI "vhost-user-blk-pci-base" 241 #define VHOST_USER_BLK_PCI(obj) \ 242 OBJECT_CHECK(VHostUserBlkPCI, (obj), TYPE_VHOST_USER_BLK_PCI) 243 244 struct VHostUserBlkPCI { 245 VirtIOPCIProxy parent_obj; 246 VHostUserBlk vdev; 247 }; 248 #endif 249 250 /* 251 * virtio-blk-pci: This extends VirtioPCIProxy. 252 */ 253 #define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci-base" 254 #define VIRTIO_BLK_PCI(obj) \ 255 OBJECT_CHECK(VirtIOBlkPCI, (obj), TYPE_VIRTIO_BLK_PCI) 256 257 struct VirtIOBlkPCI { 258 VirtIOPCIProxy parent_obj; 259 VirtIOBlock vdev; 260 }; 261 262 /* 263 * virtio-serial-pci: This extends VirtioPCIProxy. 264 */ 265 #define TYPE_VIRTIO_SERIAL_PCI "virtio-serial-pci-base" 266 #define VIRTIO_SERIAL_PCI(obj) \ 267 OBJECT_CHECK(VirtIOSerialPCI, (obj), TYPE_VIRTIO_SERIAL_PCI) 268 269 struct VirtIOSerialPCI { 270 VirtIOPCIProxy parent_obj; 271 VirtIOSerial vdev; 272 }; 273 274 /* 275 * virtio-net-pci: This extends VirtioPCIProxy. 276 */ 277 #define TYPE_VIRTIO_NET_PCI "virtio-net-pci-base" 278 #define VIRTIO_NET_PCI(obj) \ 279 OBJECT_CHECK(VirtIONetPCI, (obj), TYPE_VIRTIO_NET_PCI) 280 281 struct VirtIONetPCI { 282 VirtIOPCIProxy parent_obj; 283 VirtIONet vdev; 284 }; 285 286 /* 287 * virtio-input-pci: This extends VirtioPCIProxy. 288 */ 289 #define TYPE_VIRTIO_INPUT_PCI "virtio-input-pci" 290 291 /* 292 * virtio-gpu-pci: This extends VirtioPCIProxy. 293 */ 294 #define TYPE_VIRTIO_GPU_PCI "virtio-gpu-pci" 295 #define VIRTIO_GPU_PCI(obj) \ 296 OBJECT_CHECK(VirtIOGPUPCI, (obj), TYPE_VIRTIO_GPU_PCI) 297 298 struct VirtIOGPUPCI { 299 VirtIOPCIProxy parent_obj; 300 VirtIOGPU vdev; 301 }; 302 303 /* 304 * virtio-crypto-pci: This extends VirtioPCIProxy. 305 */ 306 #define TYPE_VIRTIO_CRYPTO_PCI "virtio-crypto-pci" 307 #define VIRTIO_CRYPTO_PCI(obj) \ 308 OBJECT_CHECK(VirtIOCryptoPCI, (obj), TYPE_VIRTIO_CRYPTO_PCI) 309 310 struct VirtIOCryptoPCI { 311 VirtIOPCIProxy parent_obj; 312 VirtIOCrypto vdev; 313 }; 314 315 /* Virtio ABI version, if we increment this, we break the guest driver. */ 316 #define VIRTIO_PCI_ABI_VERSION 0 317 318 /* Input for virtio_pci_types_register() */ 319 typedef struct VirtioPCIDeviceTypeInfo { 320 /* 321 * Common base class for the subclasses below. 322 * 323 * Required only if transitional_name or non_transitional_name is set. 324 * 325 * We need a separate base type instead of making all types 326 * inherit from generic_name for two reasons: 327 * 1) generic_name implements INTERFACE_PCIE_DEVICE, but 328 * transitional_name does not. 329 * 2) generic_name has the "disable-legacy" and "disable-modern" 330 * properties, transitional_name and non_transitional name don't. 331 */ 332 const char *base_name; 333 /* 334 * Generic device type. Optional. 335 * 336 * Supports both transitional and non-transitional modes, 337 * using the disable-legacy and disable-modern properties. 338 * If disable-legacy=auto, (non-)transitional mode is selected 339 * depending on the bus where the device is plugged. 340 * 341 * Implements both INTERFACE_PCIE_DEVICE and INTERFACE_CONVENTIONAL_PCI_DEVICE, 342 * but PCI Express is supported only in non-transitional mode. 343 * 344 * The only type implemented by QEMU 3.1 and older. 345 */ 346 const char *generic_name; 347 /* 348 * The transitional device type. Optional. 349 * 350 * Implements both INTERFACE_PCIE_DEVICE and INTERFACE_CONVENTIONAL_PCI_DEVICE. 351 */ 352 const char *transitional_name; 353 /* 354 * The non-transitional device type. Optional. 355 * 356 * Implements INTERFACE_CONVENTIONAL_PCI_DEVICE only. 357 */ 358 const char *non_transitional_name; 359 360 /* Parent type. If NULL, TYPE_VIRTIO_PCI is used */ 361 const char *parent; 362 363 /* Same as TypeInfo fields: */ 364 size_t instance_size; 365 void (*instance_init)(Object *obj); 366 void (*class_init)(ObjectClass *klass, void *data); 367 } VirtioPCIDeviceTypeInfo; 368 369 /* Register virtio-pci type(s). @t must be static. */ 370 void virtio_pci_types_register(const VirtioPCIDeviceTypeInfo *t); 371 372 #endif 373