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Diffstat (limited to 'qemu/linux-headers/linux/vfio.h')
| -rw-r--r-- | qemu/linux-headers/linux/vfio.h | 691 |
1 files changed, 0 insertions, 691 deletions
diff --git a/qemu/linux-headers/linux/vfio.h b/qemu/linux-headers/linux/vfio.h deleted file mode 100644 index 759b850a3..000000000 --- a/qemu/linux-headers/linux/vfio.h +++ /dev/null @@ -1,691 +0,0 @@ -/* - * VFIO API definition - * - * Copyright (C) 2012 Red Hat, Inc. All rights reserved. - * Author: Alex Williamson <alex.williamson@redhat.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#ifndef VFIO_H -#define VFIO_H - -#include <linux/types.h> -#include <linux/ioctl.h> - -#define VFIO_API_VERSION 0 - - -/* Kernel & User level defines for VFIO IOCTLs. */ - -/* Extensions */ - -#define VFIO_TYPE1_IOMMU 1 -#define VFIO_SPAPR_TCE_IOMMU 2 -#define VFIO_TYPE1v2_IOMMU 3 -/* - * IOMMU enforces DMA cache coherence (ex. PCIe NoSnoop stripping). This - * capability is subject to change as groups are added or removed. - */ -#define VFIO_DMA_CC_IOMMU 4 - -/* Check if EEH is supported */ -#define VFIO_EEH 5 - -/* Two-stage IOMMU */ -#define VFIO_TYPE1_NESTING_IOMMU 6 /* Implies v2 */ - -#define VFIO_SPAPR_TCE_v2_IOMMU 7 - -/* - * The No-IOMMU IOMMU offers no translation or isolation for devices and - * supports no ioctls outside of VFIO_CHECK_EXTENSION. Use of VFIO's No-IOMMU - * code will taint the host kernel and should be used with extreme caution. - */ -#define VFIO_NOIOMMU_IOMMU 8 - -/* - * The IOCTL interface is designed for extensibility by embedding the - * structure length (argsz) and flags into structures passed between - * kernel and userspace. We therefore use the _IO() macro for these - * defines to avoid implicitly embedding a size into the ioctl request. - * As structure fields are added, argsz will increase to match and flag - * bits will be defined to indicate additional fields with valid data. - * It's *always* the caller's responsibility to indicate the size of - * the structure passed by setting argsz appropriately. - */ - -#define VFIO_TYPE (';') -#define VFIO_BASE 100 - -/* - * For extension of INFO ioctls, VFIO makes use of a capability chain - * designed after PCI/e capabilities. A flag bit indicates whether - * this capability chain is supported and a field defined in the fixed - * structure defines the offset of the first capability in the chain. - * This field is only valid when the corresponding bit in the flags - * bitmap is set. This offset field is relative to the start of the - * INFO buffer, as is the next field within each capability header. - * The id within the header is a shared address space per INFO ioctl, - * while the version field is specific to the capability id. The - * contents following the header are specific to the capability id. - */ -struct vfio_info_cap_header { - __u16 id; /* Identifies capability */ - __u16 version; /* Version specific to the capability ID */ - __u32 next; /* Offset of next capability */ -}; - -/* - * Callers of INFO ioctls passing insufficiently sized buffers will see - * the capability chain flag bit set, a zero value for the first capability - * offset (if available within the provided argsz), and argsz will be - * updated to report the necessary buffer size. For compatibility, the - * INFO ioctl will not report error in this case, but the capability chain - * will not be available. - */ - -/* -------- IOCTLs for VFIO file descriptor (/dev/vfio/vfio) -------- */ - -/** - * VFIO_GET_API_VERSION - _IO(VFIO_TYPE, VFIO_BASE + 0) - * - * Report the version of the VFIO API. This allows us to bump the entire - * API version should we later need to add or change features in incompatible - * ways. - * Return: VFIO_API_VERSION - * Availability: Always - */ -#define VFIO_GET_API_VERSION _IO(VFIO_TYPE, VFIO_BASE + 0) - -/** - * VFIO_CHECK_EXTENSION - _IOW(VFIO_TYPE, VFIO_BASE + 1, __u32) - * - * Check whether an extension is supported. - * Return: 0 if not supported, 1 (or some other positive integer) if supported. - * Availability: Always - */ -#define VFIO_CHECK_EXTENSION _IO(VFIO_TYPE, VFIO_BASE + 1) - -/** - * VFIO_SET_IOMMU - _IOW(VFIO_TYPE, VFIO_BASE + 2, __s32) - * - * Set the iommu to the given type. The type must be supported by an - * iommu driver as verified by calling CHECK_EXTENSION using the same - * type. A group must be set to this file descriptor before this - * ioctl is available. The IOMMU interfaces enabled by this call are - * specific to the value set. - * Return: 0 on success, -errno on failure - * Availability: When VFIO group attached - */ -#define VFIO_SET_IOMMU _IO(VFIO_TYPE, VFIO_BASE + 2) - -/* -------- IOCTLs for GROUP file descriptors (/dev/vfio/$GROUP) -------- */ - -/** - * VFIO_GROUP_GET_STATUS - _IOR(VFIO_TYPE, VFIO_BASE + 3, - * struct vfio_group_status) - * - * Retrieve information about the group. Fills in provided - * struct vfio_group_info. Caller sets argsz. - * Return: 0 on succes, -errno on failure. - * Availability: Always - */ -struct vfio_group_status { - __u32 argsz; - __u32 flags; -#define VFIO_GROUP_FLAGS_VIABLE (1 << 0) -#define VFIO_GROUP_FLAGS_CONTAINER_SET (1 << 1) -}; -#define VFIO_GROUP_GET_STATUS _IO(VFIO_TYPE, VFIO_BASE + 3) - -/** - * VFIO_GROUP_SET_CONTAINER - _IOW(VFIO_TYPE, VFIO_BASE + 4, __s32) - * - * Set the container for the VFIO group to the open VFIO file - * descriptor provided. Groups may only belong to a single - * container. Containers may, at their discretion, support multiple - * groups. Only when a container is set are all of the interfaces - * of the VFIO file descriptor and the VFIO group file descriptor - * available to the user. - * Return: 0 on success, -errno on failure. - * Availability: Always - */ -#define VFIO_GROUP_SET_CONTAINER _IO(VFIO_TYPE, VFIO_BASE + 4) - -/** - * VFIO_GROUP_UNSET_CONTAINER - _IO(VFIO_TYPE, VFIO_BASE + 5) - * - * Remove the group from the attached container. This is the - * opposite of the SET_CONTAINER call and returns the group to - * an initial state. All device file descriptors must be released - * prior to calling this interface. When removing the last group - * from a container, the IOMMU will be disabled and all state lost, - * effectively also returning the VFIO file descriptor to an initial - * state. - * Return: 0 on success, -errno on failure. - * Availability: When attached to container - */ -#define VFIO_GROUP_UNSET_CONTAINER _IO(VFIO_TYPE, VFIO_BASE + 5) - -/** - * VFIO_GROUP_GET_DEVICE_FD - _IOW(VFIO_TYPE, VFIO_BASE + 6, char) - * - * Return a new file descriptor for the device object described by - * the provided string. The string should match a device listed in - * the devices subdirectory of the IOMMU group sysfs entry. The - * group containing the device must already be added to this context. - * Return: new file descriptor on success, -errno on failure. - * Availability: When attached to container - */ -#define VFIO_GROUP_GET_DEVICE_FD _IO(VFIO_TYPE, VFIO_BASE + 6) - -/* --------------- IOCTLs for DEVICE file descriptors --------------- */ - -/** - * VFIO_DEVICE_GET_INFO - _IOR(VFIO_TYPE, VFIO_BASE + 7, - * struct vfio_device_info) - * - * Retrieve information about the device. Fills in provided - * struct vfio_device_info. Caller sets argsz. - * Return: 0 on success, -errno on failure. - */ -struct vfio_device_info { - __u32 argsz; - __u32 flags; -#define VFIO_DEVICE_FLAGS_RESET (1 << 0) /* Device supports reset */ -#define VFIO_DEVICE_FLAGS_PCI (1 << 1) /* vfio-pci device */ -#define VFIO_DEVICE_FLAGS_PLATFORM (1 << 2) /* vfio-platform device */ -#define VFIO_DEVICE_FLAGS_AMBA (1 << 3) /* vfio-amba device */ - __u32 num_regions; /* Max region index + 1 */ - __u32 num_irqs; /* Max IRQ index + 1 */ -}; -#define VFIO_DEVICE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 7) - -/** - * VFIO_DEVICE_GET_REGION_INFO - _IOWR(VFIO_TYPE, VFIO_BASE + 8, - * struct vfio_region_info) - * - * Retrieve information about a device region. Caller provides - * struct vfio_region_info with index value set. Caller sets argsz. - * Implementation of region mapping is bus driver specific. This is - * intended to describe MMIO, I/O port, as well as bus specific - * regions (ex. PCI config space). Zero sized regions may be used - * to describe unimplemented regions (ex. unimplemented PCI BARs). - * Return: 0 on success, -errno on failure. - */ -struct vfio_region_info { - __u32 argsz; - __u32 flags; -#define VFIO_REGION_INFO_FLAG_READ (1 << 0) /* Region supports read */ -#define VFIO_REGION_INFO_FLAG_WRITE (1 << 1) /* Region supports write */ -#define VFIO_REGION_INFO_FLAG_MMAP (1 << 2) /* Region supports mmap */ -#define VFIO_REGION_INFO_FLAG_CAPS (1 << 3) /* Info supports caps */ - __u32 index; /* Region index */ - __u32 cap_offset; /* Offset within info struct of first cap */ - __u64 size; /* Region size (bytes) */ - __u64 offset; /* Region offset from start of device fd */ -}; -#define VFIO_DEVICE_GET_REGION_INFO _IO(VFIO_TYPE, VFIO_BASE + 8) - -/* - * The sparse mmap capability allows finer granularity of specifying areas - * within a region with mmap support. When specified, the user should only - * mmap the offset ranges specified by the areas array. mmaps outside of the - * areas specified may fail (such as the range covering a PCI MSI-X table) or - * may result in improper device behavior. - * - * The structures below define version 1 of this capability. - */ -#define VFIO_REGION_INFO_CAP_SPARSE_MMAP 1 - -struct vfio_region_sparse_mmap_area { - __u64 offset; /* Offset of mmap'able area within region */ - __u64 size; /* Size of mmap'able area */ -}; - -struct vfio_region_info_cap_sparse_mmap { - struct vfio_info_cap_header header; - __u32 nr_areas; - __u32 reserved; - struct vfio_region_sparse_mmap_area areas[]; -}; - -/* - * The device specific type capability allows regions unique to a specific - * device or class of devices to be exposed. This helps solve the problem for - * vfio bus drivers of defining which region indexes correspond to which region - * on the device, without needing to resort to static indexes, as done by - * vfio-pci. For instance, if we were to go back in time, we might remove - * VFIO_PCI_VGA_REGION_INDEX and let vfio-pci simply define that all indexes - * greater than or equal to VFIO_PCI_NUM_REGIONS are device specific and we'd - * make a "VGA" device specific type to describe the VGA access space. This - * means that non-VGA devices wouldn't need to waste this index, and thus the - * address space associated with it due to implementation of device file - * descriptor offsets in vfio-pci. - * - * The current implementation is now part of the user ABI, so we can't use this - * for VGA, but there are other upcoming use cases, such as opregions for Intel - * IGD devices and framebuffers for vGPU devices. We missed VGA, but we'll - * use this for future additions. - * - * The structure below defines version 1 of this capability. - */ -#define VFIO_REGION_INFO_CAP_TYPE 2 - -struct vfio_region_info_cap_type { - struct vfio_info_cap_header header; - __u32 type; /* global per bus driver */ - __u32 subtype; /* type specific */ -}; - -#define VFIO_REGION_TYPE_PCI_VENDOR_TYPE (1 << 31) -#define VFIO_REGION_TYPE_PCI_VENDOR_MASK (0xffff) - -/* 8086 Vendor sub-types */ -#define VFIO_REGION_SUBTYPE_INTEL_IGD_OPREGION (1) -#define VFIO_REGION_SUBTYPE_INTEL_IGD_HOST_CFG (2) -#define VFIO_REGION_SUBTYPE_INTEL_IGD_LPC_CFG (3) - -/** - * VFIO_DEVICE_GET_IRQ_INFO - _IOWR(VFIO_TYPE, VFIO_BASE + 9, - * struct vfio_irq_info) - * - * Retrieve information about a device IRQ. Caller provides - * struct vfio_irq_info with index value set. Caller sets argsz. - * Implementation of IRQ mapping is bus driver specific. Indexes - * using multiple IRQs are primarily intended to support MSI-like - * interrupt blocks. Zero count irq blocks may be used to describe - * unimplemented interrupt types. - * - * The EVENTFD flag indicates the interrupt index supports eventfd based - * signaling. - * - * The MASKABLE flags indicates the index supports MASK and UNMASK - * actions described below. - * - * AUTOMASKED indicates that after signaling, the interrupt line is - * automatically masked by VFIO and the user needs to unmask the line - * to receive new interrupts. This is primarily intended to distinguish - * level triggered interrupts. - * - * The NORESIZE flag indicates that the interrupt lines within the index - * are setup as a set and new subindexes cannot be enabled without first - * disabling the entire index. This is used for interrupts like PCI MSI - * and MSI-X where the driver may only use a subset of the available - * indexes, but VFIO needs to enable a specific number of vectors - * upfront. In the case of MSI-X, where the user can enable MSI-X and - * then add and unmask vectors, it's up to userspace to make the decision - * whether to allocate the maximum supported number of vectors or tear - * down setup and incrementally increase the vectors as each is enabled. - */ -struct vfio_irq_info { - __u32 argsz; - __u32 flags; -#define VFIO_IRQ_INFO_EVENTFD (1 << 0) -#define VFIO_IRQ_INFO_MASKABLE (1 << 1) -#define VFIO_IRQ_INFO_AUTOMASKED (1 << 2) -#define VFIO_IRQ_INFO_NORESIZE (1 << 3) - __u32 index; /* IRQ index */ - __u32 count; /* Number of IRQs within this index */ -}; -#define VFIO_DEVICE_GET_IRQ_INFO _IO(VFIO_TYPE, VFIO_BASE + 9) - -/** - * VFIO_DEVICE_SET_IRQS - _IOW(VFIO_TYPE, VFIO_BASE + 10, struct vfio_irq_set) - * - * Set signaling, masking, and unmasking of interrupts. Caller provides - * struct vfio_irq_set with all fields set. 'start' and 'count' indicate - * the range of subindexes being specified. - * - * The DATA flags specify the type of data provided. If DATA_NONE, the - * operation performs the specified action immediately on the specified - * interrupt(s). For example, to unmask AUTOMASKED interrupt [0,0]: - * flags = (DATA_NONE|ACTION_UNMASK), index = 0, start = 0, count = 1. - * - * DATA_BOOL allows sparse support for the same on arrays of interrupts. - * For example, to mask interrupts [0,1] and [0,3] (but not [0,2]): - * flags = (DATA_BOOL|ACTION_MASK), index = 0, start = 1, count = 3, - * data = {1,0,1} - * - * DATA_EVENTFD binds the specified ACTION to the provided __s32 eventfd. - * A value of -1 can be used to either de-assign interrupts if already - * assigned or skip un-assigned interrupts. For example, to set an eventfd - * to be trigger for interrupts [0,0] and [0,2]: - * flags = (DATA_EVENTFD|ACTION_TRIGGER), index = 0, start = 0, count = 3, - * data = {fd1, -1, fd2} - * If index [0,1] is previously set, two count = 1 ioctls calls would be - * required to set [0,0] and [0,2] without changing [0,1]. - * - * Once a signaling mechanism is set, DATA_BOOL or DATA_NONE can be used - * with ACTION_TRIGGER to perform kernel level interrupt loopback testing - * from userspace (ie. simulate hardware triggering). - * - * Setting of an event triggering mechanism to userspace for ACTION_TRIGGER - * enables the interrupt index for the device. Individual subindex interrupts - * can be disabled using the -1 value for DATA_EVENTFD or the index can be - * disabled as a whole with: flags = (DATA_NONE|ACTION_TRIGGER), count = 0. - * - * Note that ACTION_[UN]MASK specify user->kernel signaling (irqfds) while - * ACTION_TRIGGER specifies kernel->user signaling. - */ -struct vfio_irq_set { - __u32 argsz; - __u32 flags; -#define VFIO_IRQ_SET_DATA_NONE (1 << 0) /* Data not present */ -#define VFIO_IRQ_SET_DATA_BOOL (1 << 1) /* Data is bool (u8) */ -#define VFIO_IRQ_SET_DATA_EVENTFD (1 << 2) /* Data is eventfd (s32) */ -#define VFIO_IRQ_SET_ACTION_MASK (1 << 3) /* Mask interrupt */ -#define VFIO_IRQ_SET_ACTION_UNMASK (1 << 4) /* Unmask interrupt */ -#define VFIO_IRQ_SET_ACTION_TRIGGER (1 << 5) /* Trigger interrupt */ - __u32 index; - __u32 start; - __u32 count; - __u8 data[]; -}; -#define VFIO_DEVICE_SET_IRQS _IO(VFIO_TYPE, VFIO_BASE + 10) - -#define VFIO_IRQ_SET_DATA_TYPE_MASK (VFIO_IRQ_SET_DATA_NONE | \ - VFIO_IRQ_SET_DATA_BOOL | \ - VFIO_IRQ_SET_DATA_EVENTFD) -#define VFIO_IRQ_SET_ACTION_TYPE_MASK (VFIO_IRQ_SET_ACTION_MASK | \ - VFIO_IRQ_SET_ACTION_UNMASK | \ - VFIO_IRQ_SET_ACTION_TRIGGER) -/** - * VFIO_DEVICE_RESET - _IO(VFIO_TYPE, VFIO_BASE + 11) - * - * Reset a device. - */ -#define VFIO_DEVICE_RESET _IO(VFIO_TYPE, VFIO_BASE + 11) - -/* - * The VFIO-PCI bus driver makes use of the following fixed region and - * IRQ index mapping. Unimplemented regions return a size of zero. - * Unimplemented IRQ types return a count of zero. - */ - -enum { - VFIO_PCI_BAR0_REGION_INDEX, - VFIO_PCI_BAR1_REGION_INDEX, - VFIO_PCI_BAR2_REGION_INDEX, - VFIO_PCI_BAR3_REGION_INDEX, - VFIO_PCI_BAR4_REGION_INDEX, - VFIO_PCI_BAR5_REGION_INDEX, - VFIO_PCI_ROM_REGION_INDEX, - VFIO_PCI_CONFIG_REGION_INDEX, - /* - * Expose VGA regions defined for PCI base class 03, subclass 00. - * This includes I/O port ranges 0x3b0 to 0x3bb and 0x3c0 to 0x3df - * as well as the MMIO range 0xa0000 to 0xbffff. Each implemented - * range is found at it's identity mapped offset from the region - * offset, for example 0x3b0 is region_info.offset + 0x3b0. Areas - * between described ranges are unimplemented. - */ - VFIO_PCI_VGA_REGION_INDEX, - VFIO_PCI_NUM_REGIONS = 9 /* Fixed user ABI, region indexes >=9 use */ - /* device specific cap to define content. */ -}; - -enum { - VFIO_PCI_INTX_IRQ_INDEX, - VFIO_PCI_MSI_IRQ_INDEX, - VFIO_PCI_MSIX_IRQ_INDEX, - VFIO_PCI_ERR_IRQ_INDEX, - VFIO_PCI_REQ_IRQ_INDEX, - VFIO_PCI_NUM_IRQS -}; - -/** - * VFIO_DEVICE_GET_PCI_HOT_RESET_INFO - _IORW(VFIO_TYPE, VFIO_BASE + 12, - * struct vfio_pci_hot_reset_info) - * - * Return: 0 on success, -errno on failure: - * -enospc = insufficient buffer, -enodev = unsupported for device. - */ -struct vfio_pci_dependent_device { - __u32 group_id; - __u16 segment; - __u8 bus; - __u8 devfn; /* Use PCI_SLOT/PCI_FUNC */ -}; - -struct vfio_pci_hot_reset_info { - __u32 argsz; - __u32 flags; - __u32 count; - struct vfio_pci_dependent_device devices[]; -}; - -#define VFIO_DEVICE_GET_PCI_HOT_RESET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12) - -/** - * VFIO_DEVICE_PCI_HOT_RESET - _IOW(VFIO_TYPE, VFIO_BASE + 13, - * struct vfio_pci_hot_reset) - * - * Return: 0 on success, -errno on failure. - */ -struct vfio_pci_hot_reset { - __u32 argsz; - __u32 flags; - __u32 count; - __s32 group_fds[]; -}; - -#define VFIO_DEVICE_PCI_HOT_RESET _IO(VFIO_TYPE, VFIO_BASE + 13) - -/* -------- API for Type1 VFIO IOMMU -------- */ - -/** - * VFIO_IOMMU_GET_INFO - _IOR(VFIO_TYPE, VFIO_BASE + 12, struct vfio_iommu_info) - * - * Retrieve information about the IOMMU object. Fills in provided - * struct vfio_iommu_info. Caller sets argsz. - * - * XXX Should we do these by CHECK_EXTENSION too? - */ -struct vfio_iommu_type1_info { - __u32 argsz; - __u32 flags; -#define VFIO_IOMMU_INFO_PGSIZES (1 << 0) /* supported page sizes info */ - __u64 iova_pgsizes; /* Bitmap of supported page sizes */ -}; - -#define VFIO_IOMMU_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12) - -/** - * VFIO_IOMMU_MAP_DMA - _IOW(VFIO_TYPE, VFIO_BASE + 13, struct vfio_dma_map) - * - * Map process virtual addresses to IO virtual addresses using the - * provided struct vfio_dma_map. Caller sets argsz. READ &/ WRITE required. - */ -struct vfio_iommu_type1_dma_map { - __u32 argsz; - __u32 flags; -#define VFIO_DMA_MAP_FLAG_READ (1 << 0) /* readable from device */ -#define VFIO_DMA_MAP_FLAG_WRITE (1 << 1) /* writable from device */ - __u64 vaddr; /* Process virtual address */ - __u64 iova; /* IO virtual address */ - __u64 size; /* Size of mapping (bytes) */ -}; - -#define VFIO_IOMMU_MAP_DMA _IO(VFIO_TYPE, VFIO_BASE + 13) - -/** - * VFIO_IOMMU_UNMAP_DMA - _IOWR(VFIO_TYPE, VFIO_BASE + 14, - * struct vfio_dma_unmap) - * - * Unmap IO virtual addresses using the provided struct vfio_dma_unmap. - * Caller sets argsz. The actual unmapped size is returned in the size - * field. No guarantee is made to the user that arbitrary unmaps of iova - * or size different from those used in the original mapping call will - * succeed. - */ -struct vfio_iommu_type1_dma_unmap { - __u32 argsz; - __u32 flags; - __u64 iova; /* IO virtual address */ - __u64 size; /* Size of mapping (bytes) */ -}; - -#define VFIO_IOMMU_UNMAP_DMA _IO(VFIO_TYPE, VFIO_BASE + 14) - -/* - * IOCTLs to enable/disable IOMMU container usage. - * No parameters are supported. - */ -#define VFIO_IOMMU_ENABLE _IO(VFIO_TYPE, VFIO_BASE + 15) -#define VFIO_IOMMU_DISABLE _IO(VFIO_TYPE, VFIO_BASE + 16) - -/* -------- Additional API for SPAPR TCE (Server POWERPC) IOMMU -------- */ - -/* - * The SPAPR TCE DDW info struct provides the information about - * the details of Dynamic DMA window capability. - * - * @pgsizes contains a page size bitmask, 4K/64K/16M are supported. - * @max_dynamic_windows_supported tells the maximum number of windows - * which the platform can create. - * @levels tells the maximum number of levels in multi-level IOMMU tables; - * this allows splitting a table into smaller chunks which reduces - * the amount of physically contiguous memory required for the table. - */ -struct vfio_iommu_spapr_tce_ddw_info { - __u64 pgsizes; /* Bitmap of supported page sizes */ - __u32 max_dynamic_windows_supported; - __u32 levels; -}; - -/* - * The SPAPR TCE info struct provides the information about the PCI bus - * address ranges available for DMA, these values are programmed into - * the hardware so the guest has to know that information. - * - * The DMA 32 bit window start is an absolute PCI bus address. - * The IOVA address passed via map/unmap ioctls are absolute PCI bus - * addresses too so the window works as a filter rather than an offset - * for IOVA addresses. - * - * Flags supported: - * - VFIO_IOMMU_SPAPR_INFO_DDW: informs the userspace that dynamic DMA windows - * (DDW) support is present. @ddw is only supported when DDW is present. - */ -struct vfio_iommu_spapr_tce_info { - __u32 argsz; - __u32 flags; -#define VFIO_IOMMU_SPAPR_INFO_DDW (1 << 0) /* DDW supported */ - __u32 dma32_window_start; /* 32 bit window start (bytes) */ - __u32 dma32_window_size; /* 32 bit window size (bytes) */ - struct vfio_iommu_spapr_tce_ddw_info ddw; -}; - -#define VFIO_IOMMU_SPAPR_TCE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12) - -/* - * EEH PE operation struct provides ways to: - * - enable/disable EEH functionality; - * - unfreeze IO/DMA for frozen PE; - * - read PE state; - * - reset PE; - * - configure PE; - * - inject EEH error. - */ -struct vfio_eeh_pe_err { - __u32 type; - __u32 func; - __u64 addr; - __u64 mask; -}; - -struct vfio_eeh_pe_op { - __u32 argsz; - __u32 flags; - __u32 op; - union { - struct vfio_eeh_pe_err err; - }; -}; - -#define VFIO_EEH_PE_DISABLE 0 /* Disable EEH functionality */ -#define VFIO_EEH_PE_ENABLE 1 /* Enable EEH functionality */ -#define VFIO_EEH_PE_UNFREEZE_IO 2 /* Enable IO for frozen PE */ -#define VFIO_EEH_PE_UNFREEZE_DMA 3 /* Enable DMA for frozen PE */ -#define VFIO_EEH_PE_GET_STATE 4 /* PE state retrieval */ -#define VFIO_EEH_PE_STATE_NORMAL 0 /* PE in functional state */ -#define VFIO_EEH_PE_STATE_RESET 1 /* PE reset in progress */ -#define VFIO_EEH_PE_STATE_STOPPED 2 /* Stopped DMA and IO */ -#define VFIO_EEH_PE_STATE_STOPPED_DMA 4 /* Stopped DMA only */ -#define VFIO_EEH_PE_STATE_UNAVAIL 5 /* State unavailable */ -#define VFIO_EEH_PE_RESET_DEACTIVATE 5 /* Deassert PE reset */ -#define VFIO_EEH_PE_RESET_HOT 6 /* Assert hot reset */ -#define VFIO_EEH_PE_RESET_FUNDAMENTAL 7 /* Assert fundamental reset */ -#define VFIO_EEH_PE_CONFIGURE 8 /* PE configuration */ -#define VFIO_EEH_PE_INJECT_ERR 9 /* Inject EEH error */ - -#define VFIO_EEH_PE_OP _IO(VFIO_TYPE, VFIO_BASE + 21) - -/** - * VFIO_IOMMU_SPAPR_REGISTER_MEMORY - _IOW(VFIO_TYPE, VFIO_BASE + 17, struct vfio_iommu_spapr_register_memory) - * - * Registers user space memory where DMA is allowed. It pins - * user pages and does the locked memory accounting so - * subsequent VFIO_IOMMU_MAP_DMA/VFIO_IOMMU_UNMAP_DMA calls - * get faster. - */ -struct vfio_iommu_spapr_register_memory { - __u32 argsz; - __u32 flags; - __u64 vaddr; /* Process virtual address */ - __u64 size; /* Size of mapping (bytes) */ -}; -#define VFIO_IOMMU_SPAPR_REGISTER_MEMORY _IO(VFIO_TYPE, VFIO_BASE + 17) - -/** - * VFIO_IOMMU_SPAPR_UNREGISTER_MEMORY - _IOW(VFIO_TYPE, VFIO_BASE + 18, struct vfio_iommu_spapr_register_memory) - * - * Unregisters user space memory registered with - * VFIO_IOMMU_SPAPR_REGISTER_MEMORY. - * Uses vfio_iommu_spapr_register_memory for parameters. - */ -#define VFIO_IOMMU_SPAPR_UNREGISTER_MEMORY _IO(VFIO_TYPE, VFIO_BASE + 18) - -/** - * VFIO_IOMMU_SPAPR_TCE_CREATE - _IOWR(VFIO_TYPE, VFIO_BASE + 19, struct vfio_iommu_spapr_tce_create) - * - * Creates an additional TCE table and programs it (sets a new DMA window) - * to every IOMMU group in the container. It receives page shift, window - * size and number of levels in the TCE table being created. - * - * It allocates and returns an offset on a PCI bus of the new DMA window. - */ -struct vfio_iommu_spapr_tce_create { - __u32 argsz; - __u32 flags; - /* in */ - __u32 page_shift; - __u32 __resv1; - __u64 window_size; - __u32 levels; - __u32 __resv2; - /* out */ - __u64 start_addr; -}; -#define VFIO_IOMMU_SPAPR_TCE_CREATE _IO(VFIO_TYPE, VFIO_BASE + 19) - -/** - * VFIO_IOMMU_SPAPR_TCE_REMOVE - _IOW(VFIO_TYPE, VFIO_BASE + 20, struct vfio_iommu_spapr_tce_remove) - * - * Unprograms a TCE table from all groups in the container and destroys it. - * It receives a PCI bus offset as a window id. - */ -struct vfio_iommu_spapr_tce_remove { - __u32 argsz; - __u32 flags; - /* in */ - __u64 start_addr; -}; -#define VFIO_IOMMU_SPAPR_TCE_REMOVE _IO(VFIO_TYPE, VFIO_BASE + 20) - -/* ***************************************************************** */ - -#endif /* VFIO_H */ |