1 /* 2 * VFIO API definition 3 * 4 * Copyright (C) 2012 Red Hat, Inc. All rights reserved. 5 * Author: Alex Williamson <alex.williamson@redhat.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 #ifndef VFIO_H 12 #define VFIO_H 13 14 #include <linux/types.h> 15 #include <linux/ioctl.h> 16 17 #define VFIO_API_VERSION 0 18 19 20 /* Kernel & User level defines for VFIO IOCTLs. */ 21 22 /* Extensions */ 23 24 #define VFIO_TYPE1_IOMMU 1 25 #define VFIO_SPAPR_TCE_IOMMU 2 26 #define VFIO_TYPE1v2_IOMMU 3 27 /* 28 * IOMMU enforces DMA cache coherence (ex. PCIe NoSnoop stripping). This 29 * capability is subject to change as groups are added or removed. 30 */ 31 #define VFIO_DMA_CC_IOMMU 4 32 33 /* Check if EEH is supported */ 34 #define VFIO_EEH 5 35 36 /* Two-stage IOMMU */ 37 #define VFIO_TYPE1_NESTING_IOMMU 6 /* Implies v2 */ 38 39 #define VFIO_SPAPR_TCE_v2_IOMMU 7 40 41 /* 42 * The No-IOMMU IOMMU offers no translation or isolation for devices and 43 * supports no ioctls outside of VFIO_CHECK_EXTENSION. Use of VFIO's No-IOMMU 44 * code will taint the host kernel and should be used with extreme caution. 45 */ 46 #define VFIO_NOIOMMU_IOMMU 8 47 48 /* 49 * The IOCTL interface is designed for extensibility by embedding the 50 * structure length (argsz) and flags into structures passed between 51 * kernel and userspace. We therefore use the _IO() macro for these 52 * defines to avoid implicitly embedding a size into the ioctl request. 53 * As structure fields are added, argsz will increase to match and flag 54 * bits will be defined to indicate additional fields with valid data. 55 * It's *always* the caller's responsibility to indicate the size of 56 * the structure passed by setting argsz appropriately. 57 */ 58 59 #define VFIO_TYPE (';') 60 #define VFIO_BASE 100 61 62 /* -------- IOCTLs for VFIO file descriptor (/dev/vfio/vfio) -------- */ 63 64 /** 65 * VFIO_GET_API_VERSION - _IO(VFIO_TYPE, VFIO_BASE + 0) 66 * 67 * Report the version of the VFIO API. This allows us to bump the entire 68 * API version should we later need to add or change features in incompatible 69 * ways. 70 * Return: VFIO_API_VERSION 71 * Availability: Always 72 */ 73 #define VFIO_GET_API_VERSION _IO(VFIO_TYPE, VFIO_BASE + 0) 74 75 /** 76 * VFIO_CHECK_EXTENSION - _IOW(VFIO_TYPE, VFIO_BASE + 1, __u32) 77 * 78 * Check whether an extension is supported. 79 * Return: 0 if not supported, 1 (or some other positive integer) if supported. 80 * Availability: Always 81 */ 82 #define VFIO_CHECK_EXTENSION _IO(VFIO_TYPE, VFIO_BASE + 1) 83 84 /** 85 * VFIO_SET_IOMMU - _IOW(VFIO_TYPE, VFIO_BASE + 2, __s32) 86 * 87 * Set the iommu to the given type. The type must be supported by an 88 * iommu driver as verified by calling CHECK_EXTENSION using the same 89 * type. A group must be set to this file descriptor before this 90 * ioctl is available. The IOMMU interfaces enabled by this call are 91 * specific to the value set. 92 * Return: 0 on success, -errno on failure 93 * Availability: When VFIO group attached 94 */ 95 #define VFIO_SET_IOMMU _IO(VFIO_TYPE, VFIO_BASE + 2) 96 97 /* -------- IOCTLs for GROUP file descriptors (/dev/vfio/$GROUP) -------- */ 98 99 /** 100 * VFIO_GROUP_GET_STATUS - _IOR(VFIO_TYPE, VFIO_BASE + 3, 101 * struct vfio_group_status) 102 * 103 * Retrieve information about the group. Fills in provided 104 * struct vfio_group_info. Caller sets argsz. 105 * Return: 0 on succes, -errno on failure. 106 * Availability: Always 107 */ 108 struct vfio_group_status { 109 __u32 argsz; 110 __u32 flags; 111 #define VFIO_GROUP_FLAGS_VIABLE (1 << 0) 112 #define VFIO_GROUP_FLAGS_CONTAINER_SET (1 << 1) 113 }; 114 #define VFIO_GROUP_GET_STATUS _IO(VFIO_TYPE, VFIO_BASE + 3) 115 116 /** 117 * VFIO_GROUP_SET_CONTAINER - _IOW(VFIO_TYPE, VFIO_BASE + 4, __s32) 118 * 119 * Set the container for the VFIO group to the open VFIO file 120 * descriptor provided. Groups may only belong to a single 121 * container. Containers may, at their discretion, support multiple 122 * groups. Only when a container is set are all of the interfaces 123 * of the VFIO file descriptor and the VFIO group file descriptor 124 * available to the user. 125 * Return: 0 on success, -errno on failure. 126 * Availability: Always 127 */ 128 #define VFIO_GROUP_SET_CONTAINER _IO(VFIO_TYPE, VFIO_BASE + 4) 129 130 /** 131 * VFIO_GROUP_UNSET_CONTAINER - _IO(VFIO_TYPE, VFIO_BASE + 5) 132 * 133 * Remove the group from the attached container. This is the 134 * opposite of the SET_CONTAINER call and returns the group to 135 * an initial state. All device file descriptors must be released 136 * prior to calling this interface. When removing the last group 137 * from a container, the IOMMU will be disabled and all state lost, 138 * effectively also returning the VFIO file descriptor to an initial 139 * state. 140 * Return: 0 on success, -errno on failure. 141 * Availability: When attached to container 142 */ 143 #define VFIO_GROUP_UNSET_CONTAINER _IO(VFIO_TYPE, VFIO_BASE + 5) 144 145 /** 146 * VFIO_GROUP_GET_DEVICE_FD - _IOW(VFIO_TYPE, VFIO_BASE + 6, char) 147 * 148 * Return a new file descriptor for the device object described by 149 * the provided string. The string should match a device listed in 150 * the devices subdirectory of the IOMMU group sysfs entry. The 151 * group containing the device must already be added to this context. 152 * Return: new file descriptor on success, -errno on failure. 153 * Availability: When attached to container 154 */ 155 #define VFIO_GROUP_GET_DEVICE_FD _IO(VFIO_TYPE, VFIO_BASE + 6) 156 157 /* --------------- IOCTLs for DEVICE file descriptors --------------- */ 158 159 /** 160 * VFIO_DEVICE_GET_INFO - _IOR(VFIO_TYPE, VFIO_BASE + 7, 161 * struct vfio_device_info) 162 * 163 * Retrieve information about the device. Fills in provided 164 * struct vfio_device_info. Caller sets argsz. 165 * Return: 0 on success, -errno on failure. 166 */ 167 struct vfio_device_info { 168 __u32 argsz; 169 __u32 flags; 170 #define VFIO_DEVICE_FLAGS_RESET (1 << 0) /* Device supports reset */ 171 #define VFIO_DEVICE_FLAGS_PCI (1 << 1) /* vfio-pci device */ 172 #define VFIO_DEVICE_FLAGS_PLATFORM (1 << 2) /* vfio-platform device */ 173 #define VFIO_DEVICE_FLAGS_AMBA (1 << 3) /* vfio-amba device */ 174 __u32 num_regions; /* Max region index + 1 */ 175 __u32 num_irqs; /* Max IRQ index + 1 */ 176 }; 177 #define VFIO_DEVICE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 7) 178 179 /** 180 * VFIO_DEVICE_GET_REGION_INFO - _IOWR(VFIO_TYPE, VFIO_BASE + 8, 181 * struct vfio_region_info) 182 * 183 * Retrieve information about a device region. Caller provides 184 * struct vfio_region_info with index value set. Caller sets argsz. 185 * Implementation of region mapping is bus driver specific. This is 186 * intended to describe MMIO, I/O port, as well as bus specific 187 * regions (ex. PCI config space). Zero sized regions may be used 188 * to describe unimplemented regions (ex. unimplemented PCI BARs). 189 * Return: 0 on success, -errno on failure. 190 */ 191 struct vfio_region_info { 192 __u32 argsz; 193 __u32 flags; 194 #define VFIO_REGION_INFO_FLAG_READ (1 << 0) /* Region supports read */ 195 #define VFIO_REGION_INFO_FLAG_WRITE (1 << 1) /* Region supports write */ 196 #define VFIO_REGION_INFO_FLAG_MMAP (1 << 2) /* Region supports mmap */ 197 __u32 index; /* Region index */ 198 __u32 resv; /* Reserved for alignment */ 199 __u64 size; /* Region size (bytes) */ 200 __u64 offset; /* Region offset from start of device fd */ 201 }; 202 #define VFIO_DEVICE_GET_REGION_INFO _IO(VFIO_TYPE, VFIO_BASE + 8) 203 204 /** 205 * VFIO_DEVICE_GET_IRQ_INFO - _IOWR(VFIO_TYPE, VFIO_BASE + 9, 206 * struct vfio_irq_info) 207 * 208 * Retrieve information about a device IRQ. Caller provides 209 * struct vfio_irq_info with index value set. Caller sets argsz. 210 * Implementation of IRQ mapping is bus driver specific. Indexes 211 * using multiple IRQs are primarily intended to support MSI-like 212 * interrupt blocks. Zero count irq blocks may be used to describe 213 * unimplemented interrupt types. 214 * 215 * The EVENTFD flag indicates the interrupt index supports eventfd based 216 * signaling. 217 * 218 * The MASKABLE flags indicates the index supports MASK and UNMASK 219 * actions described below. 220 * 221 * AUTOMASKED indicates that after signaling, the interrupt line is 222 * automatically masked by VFIO and the user needs to unmask the line 223 * to receive new interrupts. This is primarily intended to distinguish 224 * level triggered interrupts. 225 * 226 * The NORESIZE flag indicates that the interrupt lines within the index 227 * are setup as a set and new subindexes cannot be enabled without first 228 * disabling the entire index. This is used for interrupts like PCI MSI 229 * and MSI-X where the driver may only use a subset of the available 230 * indexes, but VFIO needs to enable a specific number of vectors 231 * upfront. In the case of MSI-X, where the user can enable MSI-X and 232 * then add and unmask vectors, it's up to userspace to make the decision 233 * whether to allocate the maximum supported number of vectors or tear 234 * down setup and incrementally increase the vectors as each is enabled. 235 */ 236 struct vfio_irq_info { 237 __u32 argsz; 238 __u32 flags; 239 #define VFIO_IRQ_INFO_EVENTFD (1 << 0) 240 #define VFIO_IRQ_INFO_MASKABLE (1 << 1) 241 #define VFIO_IRQ_INFO_AUTOMASKED (1 << 2) 242 #define VFIO_IRQ_INFO_NORESIZE (1 << 3) 243 __u32 index; /* IRQ index */ 244 __u32 count; /* Number of IRQs within this index */ 245 }; 246 #define VFIO_DEVICE_GET_IRQ_INFO _IO(VFIO_TYPE, VFIO_BASE + 9) 247 248 /** 249 * VFIO_DEVICE_SET_IRQS - _IOW(VFIO_TYPE, VFIO_BASE + 10, struct vfio_irq_set) 250 * 251 * Set signaling, masking, and unmasking of interrupts. Caller provides 252 * struct vfio_irq_set with all fields set. 'start' and 'count' indicate 253 * the range of subindexes being specified. 254 * 255 * The DATA flags specify the type of data provided. If DATA_NONE, the 256 * operation performs the specified action immediately on the specified 257 * interrupt(s). For example, to unmask AUTOMASKED interrupt [0,0]: 258 * flags = (DATA_NONE|ACTION_UNMASK), index = 0, start = 0, count = 1. 259 * 260 * DATA_BOOL allows sparse support for the same on arrays of interrupts. 261 * For example, to mask interrupts [0,1] and [0,3] (but not [0,2]): 262 * flags = (DATA_BOOL|ACTION_MASK), index = 0, start = 1, count = 3, 263 * data = {1,0,1} 264 * 265 * DATA_EVENTFD binds the specified ACTION to the provided __s32 eventfd. 266 * A value of -1 can be used to either de-assign interrupts if already 267 * assigned or skip un-assigned interrupts. For example, to set an eventfd 268 * to be trigger for interrupts [0,0] and [0,2]: 269 * flags = (DATA_EVENTFD|ACTION_TRIGGER), index = 0, start = 0, count = 3, 270 * data = {fd1, -1, fd2} 271 * If index [0,1] is previously set, two count = 1 ioctls calls would be 272 * required to set [0,0] and [0,2] without changing [0,1]. 273 * 274 * Once a signaling mechanism is set, DATA_BOOL or DATA_NONE can be used 275 * with ACTION_TRIGGER to perform kernel level interrupt loopback testing 276 * from userspace (ie. simulate hardware triggering). 277 * 278 * Setting of an event triggering mechanism to userspace for ACTION_TRIGGER 279 * enables the interrupt index for the device. Individual subindex interrupts 280 * can be disabled using the -1 value for DATA_EVENTFD or the index can be 281 * disabled as a whole with: flags = (DATA_NONE|ACTION_TRIGGER), count = 0. 282 * 283 * Note that ACTION_[UN]MASK specify user->kernel signaling (irqfds) while 284 * ACTION_TRIGGER specifies kernel->user signaling. 285 */ 286 struct vfio_irq_set { 287 __u32 argsz; 288 __u32 flags; 289 #define VFIO_IRQ_SET_DATA_NONE (1 << 0) /* Data not present */ 290 #define VFIO_IRQ_SET_DATA_BOOL (1 << 1) /* Data is bool (u8) */ 291 #define VFIO_IRQ_SET_DATA_EVENTFD (1 << 2) /* Data is eventfd (s32) */ 292 #define VFIO_IRQ_SET_ACTION_MASK (1 << 3) /* Mask interrupt */ 293 #define VFIO_IRQ_SET_ACTION_UNMASK (1 << 4) /* Unmask interrupt */ 294 #define VFIO_IRQ_SET_ACTION_TRIGGER (1 << 5) /* Trigger interrupt */ 295 __u32 index; 296 __u32 start; 297 __u32 count; 298 __u8 data[]; 299 }; 300 #define VFIO_DEVICE_SET_IRQS _IO(VFIO_TYPE, VFIO_BASE + 10) 301 302 #define VFIO_IRQ_SET_DATA_TYPE_MASK (VFIO_IRQ_SET_DATA_NONE | \ 303 VFIO_IRQ_SET_DATA_BOOL | \ 304 VFIO_IRQ_SET_DATA_EVENTFD) 305 #define VFIO_IRQ_SET_ACTION_TYPE_MASK (VFIO_IRQ_SET_ACTION_MASK | \ 306 VFIO_IRQ_SET_ACTION_UNMASK | \ 307 VFIO_IRQ_SET_ACTION_TRIGGER) 308 /** 309 * VFIO_DEVICE_RESET - _IO(VFIO_TYPE, VFIO_BASE + 11) 310 * 311 * Reset a device. 312 */ 313 #define VFIO_DEVICE_RESET _IO(VFIO_TYPE, VFIO_BASE + 11) 314 315 /* 316 * The VFIO-PCI bus driver makes use of the following fixed region and 317 * IRQ index mapping. Unimplemented regions return a size of zero. 318 * Unimplemented IRQ types return a count of zero. 319 */ 320 321 enum { 322 VFIO_PCI_BAR0_REGION_INDEX, 323 VFIO_PCI_BAR1_REGION_INDEX, 324 VFIO_PCI_BAR2_REGION_INDEX, 325 VFIO_PCI_BAR3_REGION_INDEX, 326 VFIO_PCI_BAR4_REGION_INDEX, 327 VFIO_PCI_BAR5_REGION_INDEX, 328 VFIO_PCI_ROM_REGION_INDEX, 329 VFIO_PCI_CONFIG_REGION_INDEX, 330 /* 331 * Expose VGA regions defined for PCI base class 03, subclass 00. 332 * This includes I/O port ranges 0x3b0 to 0x3bb and 0x3c0 to 0x3df 333 * as well as the MMIO range 0xa0000 to 0xbffff. Each implemented 334 * range is found at it's identity mapped offset from the region 335 * offset, for example 0x3b0 is region_info.offset + 0x3b0. Areas 336 * between described ranges are unimplemented. 337 */ 338 VFIO_PCI_VGA_REGION_INDEX, 339 VFIO_PCI_NUM_REGIONS 340 }; 341 342 enum { 343 VFIO_PCI_INTX_IRQ_INDEX, 344 VFIO_PCI_MSI_IRQ_INDEX, 345 VFIO_PCI_MSIX_IRQ_INDEX, 346 VFIO_PCI_ERR_IRQ_INDEX, 347 VFIO_PCI_REQ_IRQ_INDEX, 348 VFIO_PCI_NUM_IRQS 349 }; 350 351 /** 352 * VFIO_DEVICE_GET_PCI_HOT_RESET_INFO - _IORW(VFIO_TYPE, VFIO_BASE + 12, 353 * struct vfio_pci_hot_reset_info) 354 * 355 * Return: 0 on success, -errno on failure: 356 * -enospc = insufficient buffer, -enodev = unsupported for device. 357 */ 358 struct vfio_pci_dependent_device { 359 __u32 group_id; 360 __u16 segment; 361 __u8 bus; 362 __u8 devfn; /* Use PCI_SLOT/PCI_FUNC */ 363 }; 364 365 struct vfio_pci_hot_reset_info { 366 __u32 argsz; 367 __u32 flags; 368 __u32 count; 369 struct vfio_pci_dependent_device devices[]; 370 }; 371 372 #define VFIO_DEVICE_GET_PCI_HOT_RESET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12) 373 374 /** 375 * VFIO_DEVICE_PCI_HOT_RESET - _IOW(VFIO_TYPE, VFIO_BASE + 13, 376 * struct vfio_pci_hot_reset) 377 * 378 * Return: 0 on success, -errno on failure. 379 */ 380 struct vfio_pci_hot_reset { 381 __u32 argsz; 382 __u32 flags; 383 __u32 count; 384 __s32 group_fds[]; 385 }; 386 387 #define VFIO_DEVICE_PCI_HOT_RESET _IO(VFIO_TYPE, VFIO_BASE + 13) 388 389 /* -------- API for Type1 VFIO IOMMU -------- */ 390 391 /** 392 * VFIO_IOMMU_GET_INFO - _IOR(VFIO_TYPE, VFIO_BASE + 12, struct vfio_iommu_info) 393 * 394 * Retrieve information about the IOMMU object. Fills in provided 395 * struct vfio_iommu_info. Caller sets argsz. 396 * 397 * XXX Should we do these by CHECK_EXTENSION too? 398 */ 399 struct vfio_iommu_type1_info { 400 __u32 argsz; 401 __u32 flags; 402 #define VFIO_IOMMU_INFO_PGSIZES (1 << 0) /* supported page sizes info */ 403 __u64 iova_pgsizes; /* Bitmap of supported page sizes */ 404 }; 405 406 #define VFIO_IOMMU_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12) 407 408 /** 409 * VFIO_IOMMU_MAP_DMA - _IOW(VFIO_TYPE, VFIO_BASE + 13, struct vfio_dma_map) 410 * 411 * Map process virtual addresses to IO virtual addresses using the 412 * provided struct vfio_dma_map. Caller sets argsz. READ &/ WRITE required. 413 */ 414 struct vfio_iommu_type1_dma_map { 415 __u32 argsz; 416 __u32 flags; 417 #define VFIO_DMA_MAP_FLAG_READ (1 << 0) /* readable from device */ 418 #define VFIO_DMA_MAP_FLAG_WRITE (1 << 1) /* writable from device */ 419 __u64 vaddr; /* Process virtual address */ 420 __u64 iova; /* IO virtual address */ 421 __u64 size; /* Size of mapping (bytes) */ 422 }; 423 424 #define VFIO_IOMMU_MAP_DMA _IO(VFIO_TYPE, VFIO_BASE + 13) 425 426 /** 427 * VFIO_IOMMU_UNMAP_DMA - _IOWR(VFIO_TYPE, VFIO_BASE + 14, 428 * struct vfio_dma_unmap) 429 * 430 * Unmap IO virtual addresses using the provided struct vfio_dma_unmap. 431 * Caller sets argsz. The actual unmapped size is returned in the size 432 * field. No guarantee is made to the user that arbitrary unmaps of iova 433 * or size different from those used in the original mapping call will 434 * succeed. 435 */ 436 struct vfio_iommu_type1_dma_unmap { 437 __u32 argsz; 438 __u32 flags; 439 __u64 iova; /* IO virtual address */ 440 __u64 size; /* Size of mapping (bytes) */ 441 }; 442 443 #define VFIO_IOMMU_UNMAP_DMA _IO(VFIO_TYPE, VFIO_BASE + 14) 444 445 /* 446 * IOCTLs to enable/disable IOMMU container usage. 447 * No parameters are supported. 448 */ 449 #define VFIO_IOMMU_ENABLE _IO(VFIO_TYPE, VFIO_BASE + 15) 450 #define VFIO_IOMMU_DISABLE _IO(VFIO_TYPE, VFIO_BASE + 16) 451 452 /* -------- Additional API for SPAPR TCE (Server POWERPC) IOMMU -------- */ 453 454 /* 455 * The SPAPR TCE DDW info struct provides the information about 456 * the details of Dynamic DMA window capability. 457 * 458 * @pgsizes contains a page size bitmask, 4K/64K/16M are supported. 459 * @max_dynamic_windows_supported tells the maximum number of windows 460 * which the platform can create. 461 * @levels tells the maximum number of levels in multi-level IOMMU tables; 462 * this allows splitting a table into smaller chunks which reduces 463 * the amount of physically contiguous memory required for the table. 464 */ 465 struct vfio_iommu_spapr_tce_ddw_info { 466 __u64 pgsizes; /* Bitmap of supported page sizes */ 467 __u32 max_dynamic_windows_supported; 468 __u32 levels; 469 }; 470 471 /* 472 * The SPAPR TCE info struct provides the information about the PCI bus 473 * address ranges available for DMA, these values are programmed into 474 * the hardware so the guest has to know that information. 475 * 476 * The DMA 32 bit window start is an absolute PCI bus address. 477 * The IOVA address passed via map/unmap ioctls are absolute PCI bus 478 * addresses too so the window works as a filter rather than an offset 479 * for IOVA addresses. 480 * 481 * Flags supported: 482 * - VFIO_IOMMU_SPAPR_INFO_DDW: informs the userspace that dynamic DMA windows 483 * (DDW) support is present. @ddw is only supported when DDW is present. 484 */ 485 struct vfio_iommu_spapr_tce_info { 486 __u32 argsz; 487 __u32 flags; 488 #define VFIO_IOMMU_SPAPR_INFO_DDW (1 << 0) /* DDW supported */ 489 __u32 dma32_window_start; /* 32 bit window start (bytes) */ 490 __u32 dma32_window_size; /* 32 bit window size (bytes) */ 491 struct vfio_iommu_spapr_tce_ddw_info ddw; 492 }; 493 494 #define VFIO_IOMMU_SPAPR_TCE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12) 495 496 /* 497 * EEH PE operation struct provides ways to: 498 * - enable/disable EEH functionality; 499 * - unfreeze IO/DMA for frozen PE; 500 * - read PE state; 501 * - reset PE; 502 * - configure PE; 503 * - inject EEH error. 504 */ 505 struct vfio_eeh_pe_err { 506 __u32 type; 507 __u32 func; 508 __u64 addr; 509 __u64 mask; 510 }; 511 512 struct vfio_eeh_pe_op { 513 __u32 argsz; 514 __u32 flags; 515 __u32 op; 516 union { 517 struct vfio_eeh_pe_err err; 518 }; 519 }; 520 521 #define VFIO_EEH_PE_DISABLE 0 /* Disable EEH functionality */ 522 #define VFIO_EEH_PE_ENABLE 1 /* Enable EEH functionality */ 523 #define VFIO_EEH_PE_UNFREEZE_IO 2 /* Enable IO for frozen PE */ 524 #define VFIO_EEH_PE_UNFREEZE_DMA 3 /* Enable DMA for frozen PE */ 525 #define VFIO_EEH_PE_GET_STATE 4 /* PE state retrieval */ 526 #define VFIO_EEH_PE_STATE_NORMAL 0 /* PE in functional state */ 527 #define VFIO_EEH_PE_STATE_RESET 1 /* PE reset in progress */ 528 #define VFIO_EEH_PE_STATE_STOPPED 2 /* Stopped DMA and IO */ 529 #define VFIO_EEH_PE_STATE_STOPPED_DMA 4 /* Stopped DMA only */ 530 #define VFIO_EEH_PE_STATE_UNAVAIL 5 /* State unavailable */ 531 #define VFIO_EEH_PE_RESET_DEACTIVATE 5 /* Deassert PE reset */ 532 #define VFIO_EEH_PE_RESET_HOT 6 /* Assert hot reset */ 533 #define VFIO_EEH_PE_RESET_FUNDAMENTAL 7 /* Assert fundamental reset */ 534 #define VFIO_EEH_PE_CONFIGURE 8 /* PE configuration */ 535 #define VFIO_EEH_PE_INJECT_ERR 9 /* Inject EEH error */ 536 537 #define VFIO_EEH_PE_OP _IO(VFIO_TYPE, VFIO_BASE + 21) 538 539 /** 540 * VFIO_IOMMU_SPAPR_REGISTER_MEMORY - _IOW(VFIO_TYPE, VFIO_BASE + 17, struct vfio_iommu_spapr_register_memory) 541 * 542 * Registers user space memory where DMA is allowed. It pins 543 * user pages and does the locked memory accounting so 544 * subsequent VFIO_IOMMU_MAP_DMA/VFIO_IOMMU_UNMAP_DMA calls 545 * get faster. 546 */ 547 struct vfio_iommu_spapr_register_memory { 548 __u32 argsz; 549 __u32 flags; 550 __u64 vaddr; /* Process virtual address */ 551 __u64 size; /* Size of mapping (bytes) */ 552 }; 553 #define VFIO_IOMMU_SPAPR_REGISTER_MEMORY _IO(VFIO_TYPE, VFIO_BASE + 17) 554 555 /** 556 * VFIO_IOMMU_SPAPR_UNREGISTER_MEMORY - _IOW(VFIO_TYPE, VFIO_BASE + 18, struct vfio_iommu_spapr_register_memory) 557 * 558 * Unregisters user space memory registered with 559 * VFIO_IOMMU_SPAPR_REGISTER_MEMORY. 560 * Uses vfio_iommu_spapr_register_memory for parameters. 561 */ 562 #define VFIO_IOMMU_SPAPR_UNREGISTER_MEMORY _IO(VFIO_TYPE, VFIO_BASE + 18) 563 564 /** 565 * VFIO_IOMMU_SPAPR_TCE_CREATE - _IOWR(VFIO_TYPE, VFIO_BASE + 19, struct vfio_iommu_spapr_tce_create) 566 * 567 * Creates an additional TCE table and programs it (sets a new DMA window) 568 * to every IOMMU group in the container. It receives page shift, window 569 * size and number of levels in the TCE table being created. 570 * 571 * It allocates and returns an offset on a PCI bus of the new DMA window. 572 */ 573 struct vfio_iommu_spapr_tce_create { 574 __u32 argsz; 575 __u32 flags; 576 /* in */ 577 __u32 page_shift; 578 __u32 __resv1; 579 __u64 window_size; 580 __u32 levels; 581 __u32 __resv2; 582 /* out */ 583 __u64 start_addr; 584 }; 585 #define VFIO_IOMMU_SPAPR_TCE_CREATE _IO(VFIO_TYPE, VFIO_BASE + 19) 586 587 /** 588 * VFIO_IOMMU_SPAPR_TCE_REMOVE - _IOW(VFIO_TYPE, VFIO_BASE + 20, struct vfio_iommu_spapr_tce_remove) 589 * 590 * Unprograms a TCE table from all groups in the container and destroys it. 591 * It receives a PCI bus offset as a window id. 592 */ 593 struct vfio_iommu_spapr_tce_remove { 594 __u32 argsz; 595 __u32 flags; 596 /* in */ 597 __u64 start_addr; 598 }; 599 #define VFIO_IOMMU_SPAPR_TCE_REMOVE _IO(VFIO_TYPE, VFIO_BASE + 20) 600 601 /* ***************************************************************** */ 602 603 #endif /* VFIO_H */ 604