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