1607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/* 2607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * VFIO API definition 3607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 4607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Copyright (C) 2012 Red Hat, Inc. All rights reserved. 5607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Author: Alex Williamson <alex.williamson@redhat.com> 6607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 7607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * This program is free software; you can redistribute it and/or modify 8607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * it under the terms of the GNU General Public License version 2 as 9607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * published by the Free Software Foundation. 10607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 11607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#ifndef _UAPIVFIO_H 12607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define _UAPIVFIO_H 13607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 14607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#include <linux/types.h> 15607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#include <linux/ioctl.h> 16607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 17607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_API_VERSION 0 18607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 19607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 20607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/* Kernel & User level defines for VFIO IOCTLs. */ 21607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 22607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/* Extensions */ 23607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 24607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_TYPE1_IOMMU 1 255ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy#define VFIO_SPAPR_TCE_IOMMU 2 261ef3e2bc04223ff956dc62abaf2dff1f3322a431Alex Williamson#define VFIO_TYPE1v2_IOMMU 3 27aa429318279b90192f35a97e9ccdc1e83b3a9624Alex Williamson/* 28aa429318279b90192f35a97e9ccdc1e83b3a9624Alex Williamson * IOMMU enforces DMA cache coherence (ex. PCIe NoSnoop stripping). This 29aa429318279b90192f35a97e9ccdc1e83b3a9624Alex Williamson * capability is subject to change as groups are added or removed. 30aa429318279b90192f35a97e9ccdc1e83b3a9624Alex Williamson */ 31aa429318279b90192f35a97e9ccdc1e83b3a9624Alex Williamson#define VFIO_DMA_CC_IOMMU 4 32607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 331b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan/* Check if EEH is supported */ 341b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan#define VFIO_EEH 5 351b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan 36f5c9ecebaf2a2c9381973798e389cc019dd983e0Will Deacon/* Two-stage IOMMU */ 37f5c9ecebaf2a2c9381973798e389cc019dd983e0Will Deacon#define VFIO_TYPE1_NESTING_IOMMU 6 /* Implies v2 */ 38f5c9ecebaf2a2c9381973798e389cc019dd983e0Will Deacon 39607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/* 40607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * The IOCTL interface is designed for extensibility by embedding the 41607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * structure length (argsz) and flags into structures passed between 42607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * kernel and userspace. We therefore use the _IO() macro for these 43607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * defines to avoid implicitly embedding a size into the ioctl request. 44607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * As structure fields are added, argsz will increase to match and flag 45607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * bits will be defined to indicate additional fields with valid data. 46607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * It's *always* the caller's responsibility to indicate the size of 47607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * the structure passed by setting argsz appropriately. 48607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 49607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 50607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_TYPE (';') 51607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_BASE 100 52607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 53607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/* -------- IOCTLs for VFIO file descriptor (/dev/vfio/vfio) -------- */ 54607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 55607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/** 56607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * VFIO_GET_API_VERSION - _IO(VFIO_TYPE, VFIO_BASE + 0) 57607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 58607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Report the version of the VFIO API. This allows us to bump the entire 59607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * API version should we later need to add or change features in incompatible 60607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * ways. 61607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Return: VFIO_API_VERSION 62607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Availability: Always 63607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 64607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_GET_API_VERSION _IO(VFIO_TYPE, VFIO_BASE + 0) 65607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 66607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/** 67607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * VFIO_CHECK_EXTENSION - _IOW(VFIO_TYPE, VFIO_BASE + 1, __u32) 68607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 69607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Check whether an extension is supported. 70607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Return: 0 if not supported, 1 (or some other positive integer) if supported. 71607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Availability: Always 72607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 73607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_CHECK_EXTENSION _IO(VFIO_TYPE, VFIO_BASE + 1) 74607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 75607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/** 76607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * VFIO_SET_IOMMU - _IOW(VFIO_TYPE, VFIO_BASE + 2, __s32) 77607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 78607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Set the iommu to the given type. The type must be supported by an 79607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * iommu driver as verified by calling CHECK_EXTENSION using the same 80607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * type. A group must be set to this file descriptor before this 81607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * ioctl is available. The IOMMU interfaces enabled by this call are 82607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * specific to the value set. 83607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Return: 0 on success, -errno on failure 84607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Availability: When VFIO group attached 85607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 86607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_SET_IOMMU _IO(VFIO_TYPE, VFIO_BASE + 2) 87607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 88607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/* -------- IOCTLs for GROUP file descriptors (/dev/vfio/$GROUP) -------- */ 89607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 90607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/** 91607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * VFIO_GROUP_GET_STATUS - _IOR(VFIO_TYPE, VFIO_BASE + 3, 92607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * struct vfio_group_status) 93607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 94607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Retrieve information about the group. Fills in provided 95607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * struct vfio_group_info. Caller sets argsz. 96607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Return: 0 on succes, -errno on failure. 97607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Availability: Always 98607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 99607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howellsstruct vfio_group_status { 100607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 argsz; 101607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 flags; 102607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_GROUP_FLAGS_VIABLE (1 << 0) 103607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_GROUP_FLAGS_CONTAINER_SET (1 << 1) 104607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells}; 105607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_GROUP_GET_STATUS _IO(VFIO_TYPE, VFIO_BASE + 3) 106607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 107607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/** 108607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * VFIO_GROUP_SET_CONTAINER - _IOW(VFIO_TYPE, VFIO_BASE + 4, __s32) 109607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 110607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Set the container for the VFIO group to the open VFIO file 111607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * descriptor provided. Groups may only belong to a single 112607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * container. Containers may, at their discretion, support multiple 113607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * groups. Only when a container is set are all of the interfaces 114607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * of the VFIO file descriptor and the VFIO group file descriptor 115607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * available to the user. 116607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Return: 0 on success, -errno on failure. 117607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Availability: Always 118607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 119607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_GROUP_SET_CONTAINER _IO(VFIO_TYPE, VFIO_BASE + 4) 120607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 121607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/** 122607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * VFIO_GROUP_UNSET_CONTAINER - _IO(VFIO_TYPE, VFIO_BASE + 5) 123607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 124607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Remove the group from the attached container. This is the 125607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * opposite of the SET_CONTAINER call and returns the group to 126607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * an initial state. All device file descriptors must be released 127607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * prior to calling this interface. When removing the last group 128607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * from a container, the IOMMU will be disabled and all state lost, 129607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * effectively also returning the VFIO file descriptor to an initial 130607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * state. 131607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Return: 0 on success, -errno on failure. 132607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Availability: When attached to container 133607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 134607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_GROUP_UNSET_CONTAINER _IO(VFIO_TYPE, VFIO_BASE + 5) 135607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 136607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/** 137607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * VFIO_GROUP_GET_DEVICE_FD - _IOW(VFIO_TYPE, VFIO_BASE + 6, char) 138607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 139607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Return a new file descriptor for the device object described by 140607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * the provided string. The string should match a device listed in 141607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * the devices subdirectory of the IOMMU group sysfs entry. The 142607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * group containing the device must already be added to this context. 143607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Return: new file descriptor on success, -errno on failure. 144607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Availability: When attached to container 145607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 146607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_GROUP_GET_DEVICE_FD _IO(VFIO_TYPE, VFIO_BASE + 6) 147607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 148607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/* --------------- IOCTLs for DEVICE file descriptors --------------- */ 149607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 150607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/** 151607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * VFIO_DEVICE_GET_INFO - _IOR(VFIO_TYPE, VFIO_BASE + 7, 152607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * struct vfio_device_info) 153607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 154607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Retrieve information about the device. Fills in provided 155607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * struct vfio_device_info. Caller sets argsz. 156607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Return: 0 on success, -errno on failure. 157607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 158607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howellsstruct vfio_device_info { 159607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 argsz; 160607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 flags; 161607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_DEVICE_FLAGS_RESET (1 << 0) /* Device supports reset */ 162607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_DEVICE_FLAGS_PCI (1 << 1) /* vfio-pci device */ 163607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 num_regions; /* Max region index + 1 */ 164607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 num_irqs; /* Max IRQ index + 1 */ 165607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells}; 166607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_DEVICE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 7) 167607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 168607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/** 169607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * VFIO_DEVICE_GET_REGION_INFO - _IOWR(VFIO_TYPE, VFIO_BASE + 8, 170607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * struct vfio_region_info) 171607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 172607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Retrieve information about a device region. Caller provides 173607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * struct vfio_region_info with index value set. Caller sets argsz. 174607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Implementation of region mapping is bus driver specific. This is 175607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * intended to describe MMIO, I/O port, as well as bus specific 176607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * regions (ex. PCI config space). Zero sized regions may be used 177607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * to describe unimplemented regions (ex. unimplemented PCI BARs). 178607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Return: 0 on success, -errno on failure. 179607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 180607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howellsstruct vfio_region_info { 181607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 argsz; 182607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 flags; 183607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_REGION_INFO_FLAG_READ (1 << 0) /* Region supports read */ 184607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_REGION_INFO_FLAG_WRITE (1 << 1) /* Region supports write */ 185607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_REGION_INFO_FLAG_MMAP (1 << 2) /* Region supports mmap */ 186607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 index; /* Region index */ 187607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 resv; /* Reserved for alignment */ 188607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 size; /* Region size (bytes) */ 189607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 offset; /* Region offset from start of device fd */ 190607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells}; 191607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_DEVICE_GET_REGION_INFO _IO(VFIO_TYPE, VFIO_BASE + 8) 192607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 193607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/** 194607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * VFIO_DEVICE_GET_IRQ_INFO - _IOWR(VFIO_TYPE, VFIO_BASE + 9, 195607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * struct vfio_irq_info) 196607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 197607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Retrieve information about a device IRQ. Caller provides 198607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * struct vfio_irq_info with index value set. Caller sets argsz. 199607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Implementation of IRQ mapping is bus driver specific. Indexes 200607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * using multiple IRQs are primarily intended to support MSI-like 201607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * interrupt blocks. Zero count irq blocks may be used to describe 202607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * unimplemented interrupt types. 203607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 204607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * The EVENTFD flag indicates the interrupt index supports eventfd based 205607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * signaling. 206607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 207607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * The MASKABLE flags indicates the index supports MASK and UNMASK 208607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * actions described below. 209607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 210607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * AUTOMASKED indicates that after signaling, the interrupt line is 211607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * automatically masked by VFIO and the user needs to unmask the line 212607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * to receive new interrupts. This is primarily intended to distinguish 213607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * level triggered interrupts. 214607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 215607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * The NORESIZE flag indicates that the interrupt lines within the index 216607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * are setup as a set and new subindexes cannot be enabled without first 217607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * disabling the entire index. This is used for interrupts like PCI MSI 218607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * and MSI-X where the driver may only use a subset of the available 219607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * indexes, but VFIO needs to enable a specific number of vectors 220607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * upfront. In the case of MSI-X, where the user can enable MSI-X and 221607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * then add and unmask vectors, it's up to userspace to make the decision 222607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * whether to allocate the maximum supported number of vectors or tear 223607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * down setup and incrementally increase the vectors as each is enabled. 224607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 225607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howellsstruct vfio_irq_info { 226607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 argsz; 227607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 flags; 228607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_IRQ_INFO_EVENTFD (1 << 0) 229607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_IRQ_INFO_MASKABLE (1 << 1) 230607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_IRQ_INFO_AUTOMASKED (1 << 2) 231607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_IRQ_INFO_NORESIZE (1 << 3) 232607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 index; /* IRQ index */ 233607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 count; /* Number of IRQs within this index */ 234607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells}; 235607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_DEVICE_GET_IRQ_INFO _IO(VFIO_TYPE, VFIO_BASE + 9) 236607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 237607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/** 238607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * VFIO_DEVICE_SET_IRQS - _IOW(VFIO_TYPE, VFIO_BASE + 10, struct vfio_irq_set) 239607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 240607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Set signaling, masking, and unmasking of interrupts. Caller provides 241607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * struct vfio_irq_set with all fields set. 'start' and 'count' indicate 242607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * the range of subindexes being specified. 243607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 244607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * The DATA flags specify the type of data provided. If DATA_NONE, the 245607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * operation performs the specified action immediately on the specified 246607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * interrupt(s). For example, to unmask AUTOMASKED interrupt [0,0]: 247607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * flags = (DATA_NONE|ACTION_UNMASK), index = 0, start = 0, count = 1. 248607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 249607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * DATA_BOOL allows sparse support for the same on arrays of interrupts. 250607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * For example, to mask interrupts [0,1] and [0,3] (but not [0,2]): 251607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * flags = (DATA_BOOL|ACTION_MASK), index = 0, start = 1, count = 3, 252607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * data = {1,0,1} 253607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 254607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * DATA_EVENTFD binds the specified ACTION to the provided __s32 eventfd. 255607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * A value of -1 can be used to either de-assign interrupts if already 256607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * assigned or skip un-assigned interrupts. For example, to set an eventfd 257607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * to be trigger for interrupts [0,0] and [0,2]: 258607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * flags = (DATA_EVENTFD|ACTION_TRIGGER), index = 0, start = 0, count = 3, 259607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * data = {fd1, -1, fd2} 260607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * If index [0,1] is previously set, two count = 1 ioctls calls would be 261607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * required to set [0,0] and [0,2] without changing [0,1]. 262607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 263607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Once a signaling mechanism is set, DATA_BOOL or DATA_NONE can be used 264607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * with ACTION_TRIGGER to perform kernel level interrupt loopback testing 265607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * from userspace (ie. simulate hardware triggering). 266607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 267607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Setting of an event triggering mechanism to userspace for ACTION_TRIGGER 268607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * enables the interrupt index for the device. Individual subindex interrupts 269607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * can be disabled using the -1 value for DATA_EVENTFD or the index can be 270607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * disabled as a whole with: flags = (DATA_NONE|ACTION_TRIGGER), count = 0. 271607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 272607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Note that ACTION_[UN]MASK specify user->kernel signaling (irqfds) while 273607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * ACTION_TRIGGER specifies kernel->user signaling. 274607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 275607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howellsstruct vfio_irq_set { 276607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 argsz; 277607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 flags; 278607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_IRQ_SET_DATA_NONE (1 << 0) /* Data not present */ 279607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_IRQ_SET_DATA_BOOL (1 << 1) /* Data is bool (u8) */ 280607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_IRQ_SET_DATA_EVENTFD (1 << 2) /* Data is eventfd (s32) */ 281607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_IRQ_SET_ACTION_MASK (1 << 3) /* Mask interrupt */ 282607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_IRQ_SET_ACTION_UNMASK (1 << 4) /* Unmask interrupt */ 283607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_IRQ_SET_ACTION_TRIGGER (1 << 5) /* Trigger interrupt */ 284607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 index; 285607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 start; 286607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 count; 287607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u8 data[]; 288607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells}; 289607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_DEVICE_SET_IRQS _IO(VFIO_TYPE, VFIO_BASE + 10) 290607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 291607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_IRQ_SET_DATA_TYPE_MASK (VFIO_IRQ_SET_DATA_NONE | \ 292607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_IRQ_SET_DATA_BOOL | \ 293607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_IRQ_SET_DATA_EVENTFD) 294607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_IRQ_SET_ACTION_TYPE_MASK (VFIO_IRQ_SET_ACTION_MASK | \ 295607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_IRQ_SET_ACTION_UNMASK | \ 296607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_IRQ_SET_ACTION_TRIGGER) 297607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/** 298607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * VFIO_DEVICE_RESET - _IO(VFIO_TYPE, VFIO_BASE + 11) 299607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 300607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Reset a device. 301607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 302607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_DEVICE_RESET _IO(VFIO_TYPE, VFIO_BASE + 11) 303607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 304607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/* 305607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * The VFIO-PCI bus driver makes use of the following fixed region and 306607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * IRQ index mapping. Unimplemented regions return a size of zero. 307607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Unimplemented IRQ types return a count of zero. 308607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 309607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 310607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howellsenum { 311607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_PCI_BAR0_REGION_INDEX, 312607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_PCI_BAR1_REGION_INDEX, 313607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_PCI_BAR2_REGION_INDEX, 314607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_PCI_BAR3_REGION_INDEX, 315607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_PCI_BAR4_REGION_INDEX, 316607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_PCI_BAR5_REGION_INDEX, 317607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_PCI_ROM_REGION_INDEX, 318607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_PCI_CONFIG_REGION_INDEX, 31984237a826b261de7ddd3d09ee53ee68cb4138937Alex Williamson /* 32084237a826b261de7ddd3d09ee53ee68cb4138937Alex Williamson * Expose VGA regions defined for PCI base class 03, subclass 00. 32184237a826b261de7ddd3d09ee53ee68cb4138937Alex Williamson * This includes I/O port ranges 0x3b0 to 0x3bb and 0x3c0 to 0x3df 32284237a826b261de7ddd3d09ee53ee68cb4138937Alex Williamson * as well as the MMIO range 0xa0000 to 0xbffff. Each implemented 32384237a826b261de7ddd3d09ee53ee68cb4138937Alex Williamson * range is found at it's identity mapped offset from the region 32484237a826b261de7ddd3d09ee53ee68cb4138937Alex Williamson * offset, for example 0x3b0 is region_info.offset + 0x3b0. Areas 32584237a826b261de7ddd3d09ee53ee68cb4138937Alex Williamson * between described ranges are unimplemented. 32684237a826b261de7ddd3d09ee53ee68cb4138937Alex Williamson */ 32784237a826b261de7ddd3d09ee53ee68cb4138937Alex Williamson VFIO_PCI_VGA_REGION_INDEX, 328607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_PCI_NUM_REGIONS 329607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells}; 330607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 331607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howellsenum { 332607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_PCI_INTX_IRQ_INDEX, 333607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_PCI_MSI_IRQ_INDEX, 334607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_PCI_MSIX_IRQ_INDEX, 335dad9f8972e04cd081a028d8fb1249d746d97fc03Vijay Mohan Pandarathil VFIO_PCI_ERR_IRQ_INDEX, 336607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells VFIO_PCI_NUM_IRQS 337607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells}; 338607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 3398b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson/** 3408b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson * VFIO_DEVICE_GET_PCI_HOT_RESET_INFO - _IORW(VFIO_TYPE, VFIO_BASE + 12, 3418b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson * struct vfio_pci_hot_reset_info) 3428b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson * 3438b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson * Return: 0 on success, -errno on failure: 3448b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson * -enospc = insufficient buffer, -enodev = unsupported for device. 3458b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson */ 3468b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamsonstruct vfio_pci_dependent_device { 3478b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson __u32 group_id; 3488b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson __u16 segment; 3498b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson __u8 bus; 3508b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson __u8 devfn; /* Use PCI_SLOT/PCI_FUNC */ 3518b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson}; 3528b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson 3538b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamsonstruct vfio_pci_hot_reset_info { 3548b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson __u32 argsz; 3558b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson __u32 flags; 3568b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson __u32 count; 3578b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson struct vfio_pci_dependent_device devices[]; 3588b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson}; 3598b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson 3608b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson#define VFIO_DEVICE_GET_PCI_HOT_RESET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12) 3618b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson 3628b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson/** 3638b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson * VFIO_DEVICE_PCI_HOT_RESET - _IOW(VFIO_TYPE, VFIO_BASE + 13, 3648b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson * struct vfio_pci_hot_reset) 3658b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson * 3668b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson * Return: 0 on success, -errno on failure. 3678b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson */ 3688b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamsonstruct vfio_pci_hot_reset { 3698b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson __u32 argsz; 3708b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson __u32 flags; 3718b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson __u32 count; 3728b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson __s32 group_fds[]; 3738b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson}; 3748b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson 3758b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson#define VFIO_DEVICE_PCI_HOT_RESET _IO(VFIO_TYPE, VFIO_BASE + 13) 3768b27ee60bfd6bbb84d2df28fa706c5c5081066caAlex Williamson 377607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/* -------- API for Type1 VFIO IOMMU -------- */ 378607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 379607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/** 380607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * VFIO_IOMMU_GET_INFO - _IOR(VFIO_TYPE, VFIO_BASE + 12, struct vfio_iommu_info) 381607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 382607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Retrieve information about the IOMMU object. Fills in provided 383607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * struct vfio_iommu_info. Caller sets argsz. 384607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 385607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * XXX Should we do these by CHECK_EXTENSION too? 386607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 387607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howellsstruct vfio_iommu_type1_info { 388607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 argsz; 389607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 flags; 390607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_IOMMU_INFO_PGSIZES (1 << 0) /* supported page sizes info */ 391607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 iova_pgsizes; /* Bitmap of supported page sizes */ 392607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells}; 393607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 394607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_IOMMU_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12) 395607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 396607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/** 397607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * VFIO_IOMMU_MAP_DMA - _IOW(VFIO_TYPE, VFIO_BASE + 13, struct vfio_dma_map) 398607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 399607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Map process virtual addresses to IO virtual addresses using the 400607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * provided struct vfio_dma_map. Caller sets argsz. READ &/ WRITE required. 401607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 402607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howellsstruct vfio_iommu_type1_dma_map { 403607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 argsz; 404607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 flags; 405607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_DMA_MAP_FLAG_READ (1 << 0) /* readable from device */ 406607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_DMA_MAP_FLAG_WRITE (1 << 1) /* writable from device */ 407607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 vaddr; /* Process virtual address */ 408607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 iova; /* IO virtual address */ 409607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 size; /* Size of mapping (bytes) */ 410607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells}; 411607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 412607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_IOMMU_MAP_DMA _IO(VFIO_TYPE, VFIO_BASE + 13) 413607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 414607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells/** 415166fd7d94afdac040b28c473e45241820ca522a2Alex Williamson * VFIO_IOMMU_UNMAP_DMA - _IOWR(VFIO_TYPE, VFIO_BASE + 14, 416166fd7d94afdac040b28c473e45241820ca522a2Alex Williamson * struct vfio_dma_unmap) 417607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * 418607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells * Unmap IO virtual addresses using the provided struct vfio_dma_unmap. 419166fd7d94afdac040b28c473e45241820ca522a2Alex Williamson * Caller sets argsz. The actual unmapped size is returned in the size 420166fd7d94afdac040b28c473e45241820ca522a2Alex Williamson * field. No guarantee is made to the user that arbitrary unmaps of iova 421166fd7d94afdac040b28c473e45241820ca522a2Alex Williamson * or size different from those used in the original mapping call will 422166fd7d94afdac040b28c473e45241820ca522a2Alex Williamson * succeed. 423607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells */ 424607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howellsstruct vfio_iommu_type1_dma_unmap { 425607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 argsz; 426607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u32 flags; 427607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 iova; /* IO virtual address */ 428607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells __u64 size; /* Size of mapping (bytes) */ 429607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells}; 430607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 431607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#define VFIO_IOMMU_UNMAP_DMA _IO(VFIO_TYPE, VFIO_BASE + 14) 432607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells 4335ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy/* 4345ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy * IOCTLs to enable/disable IOMMU container usage. 4355ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy * No parameters are supported. 4365ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy */ 4375ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy#define VFIO_IOMMU_ENABLE _IO(VFIO_TYPE, VFIO_BASE + 15) 4385ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy#define VFIO_IOMMU_DISABLE _IO(VFIO_TYPE, VFIO_BASE + 16) 4395ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy 4405ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy/* -------- Additional API for SPAPR TCE (Server POWERPC) IOMMU -------- */ 4415ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy 4425ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy/* 4435ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy * The SPAPR TCE info struct provides the information about the PCI bus 4445ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy * address ranges available for DMA, these values are programmed into 4455ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy * the hardware so the guest has to know that information. 4465ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy * 4475ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy * The DMA 32 bit window start is an absolute PCI bus address. 4485ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy * The IOVA address passed via map/unmap ioctls are absolute PCI bus 4495ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy * addresses too so the window works as a filter rather than an offset 4505ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy * for IOVA addresses. 4515ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy * 4525ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy * A flag will need to be added if other page sizes are supported, 4535ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy * so as defined here, it is always 4k. 4545ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy */ 4555ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiystruct vfio_iommu_spapr_tce_info { 4565ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy __u32 argsz; 4575ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy __u32 flags; /* reserved for future use */ 4585ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy __u32 dma32_window_start; /* 32 bit window start (bytes) */ 4595ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy __u32 dma32_window_size; /* 32 bit window size (bytes) */ 4605ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy}; 4615ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy 4625ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy#define VFIO_IOMMU_SPAPR_TCE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12) 4635ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy 4641b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan/* 4651b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan * EEH PE operation struct provides ways to: 4661b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan * - enable/disable EEH functionality; 4671b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan * - unfreeze IO/DMA for frozen PE; 4681b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan * - read PE state; 4691b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan * - reset PE; 4701b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan * - configure PE. 4711b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan */ 4721b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shanstruct vfio_eeh_pe_op { 4731b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan __u32 argsz; 4741b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan __u32 flags; 4751b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan __u32 op; 4761b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan}; 4771b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan 4781b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan#define VFIO_EEH_PE_DISABLE 0 /* Disable EEH functionality */ 4791b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan#define VFIO_EEH_PE_ENABLE 1 /* Enable EEH functionality */ 4801b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan#define VFIO_EEH_PE_UNFREEZE_IO 2 /* Enable IO for frozen PE */ 4811b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan#define VFIO_EEH_PE_UNFREEZE_DMA 3 /* Enable DMA for frozen PE */ 4821b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan#define VFIO_EEH_PE_GET_STATE 4 /* PE state retrieval */ 4831b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan#define VFIO_EEH_PE_STATE_NORMAL 0 /* PE in functional state */ 4841b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan#define VFIO_EEH_PE_STATE_RESET 1 /* PE reset in progress */ 4851b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan#define VFIO_EEH_PE_STATE_STOPPED 2 /* Stopped DMA and IO */ 4861b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan#define VFIO_EEH_PE_STATE_STOPPED_DMA 4 /* Stopped DMA only */ 4871b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan#define VFIO_EEH_PE_STATE_UNAVAIL 5 /* State unavailable */ 4881b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan#define VFIO_EEH_PE_RESET_DEACTIVATE 5 /* Deassert PE reset */ 4891b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan#define VFIO_EEH_PE_RESET_HOT 6 /* Assert hot reset */ 4901b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan#define VFIO_EEH_PE_RESET_FUNDAMENTAL 7 /* Assert fundamental reset */ 4911b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan#define VFIO_EEH_PE_CONFIGURE 8 /* PE configuration */ 4921b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan 4931b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan#define VFIO_EEH_PE_OP _IO(VFIO_TYPE, VFIO_BASE + 21) 4941b69be5e8afc634f39ad695a6ab6aad0cf0975c7Gavin Shan 4955ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy/* ***************************************************************** */ 4965ffd229c02731a91d08ca21e76b503c5bbb5c095Alexey Kardashevskiy 497607ca46e97a1b6594b29647d98a32d545c24bdffDavid Howells#endif /* _UAPIVFIO_H */ 498