616 lines
19 KiB
C
616 lines
19 KiB
C
/** @file
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* Raw PCI Devices (aka PCI pass-through). (VMM)
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*/
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/*
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* Copyright (C) 2010-2024 Oracle and/or its affiliates.
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*
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* This file is part of VirtualBox base platform packages, as
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* available from https://www.virtualbox.org.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, in version 3 of the
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* License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <https://www.gnu.org/licenses>.
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*
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* The contents of this file may alternatively be used under the terms
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* of the Common Development and Distribution License Version 1.0
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* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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* in the VirtualBox distribution, in which case the provisions of the
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* CDDL are applicable instead of those of the GPL.
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*
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* You may elect to license modified versions of this file under the
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* terms and conditions of either the GPL or the CDDL or both.
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*
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* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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*/
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#ifndef VBOX_INCLUDED_rawpci_h
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#define VBOX_INCLUDED_rawpci_h
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#ifndef RT_WITHOUT_PRAGMA_ONCE
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# pragma once
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#endif
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#include <VBox/types.h>
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#include <VBox/sup.h>
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RT_C_DECLS_BEGIN
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/**
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* Handle for the raw PCI device.
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*/
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typedef uint32_t PCIRAWDEVHANDLE;
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/**
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* Handle for the ISR.
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*/
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typedef uint32_t PCIRAWISRHANDLE;
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/**
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* Physical memory action enumeration.
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*/
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typedef enum PCIRAWMEMINFOACTION
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{
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/** Pages mapped. */
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PCIRAW_MEMINFO_MAP,
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/** Pages unmapped. */
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PCIRAW_MEMINFO_UNMAP,
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/** The usual 32-bit type blow up. */
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PCIRAW_MEMINFO_32BIT_HACK = 0x7fffffff
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} PCIRAWMEMINFOACTION;
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/**
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* Per-VM capability flag bits.
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*/
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typedef enum PCIRAWVMFLAGS
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{
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/** If we can use IOMMU in this VM. */
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PCIRAW_VMFLAGS_HAS_IOMMU = (1 << 0),
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PCIRAW_VMFLAGS_32BIT_HACK = 0x7fffffff
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} PCIRAWVMFLAGS;
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/* Forward declaration. */
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struct RAWPCIPERVM;
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/**
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* Callback to notify raw PCI subsystem about mapping/unmapping of
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* host pages to the guest. Typical usecase is to register physical
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* RAM pages with IOMMU, so that it could allow DMA for PCI devices
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* directly from the guest RAM.
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* Region shall be one or more contigous (both host and guest) pages
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* of physical memory.
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*
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* @returns VBox status code.
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*
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* @param pVmData The per VM data.
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* @param HCPhysStart Physical address of region start on the host.
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* @param GCPhysStart Physical address of region start on the guest.
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* @param cbMem Region size in bytes.
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* @param enmAction Action performed (i.e. if page was mapped
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* or unmapped).
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*/
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typedef DECLCALLBACKTYPE(int, FNRAWPCICONTIGPHYSMEMINFO,(struct RAWPCIPERVM *pVmData, RTHCPHYS HCPhysStart,
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RTGCPHYS GCPhysStart, uint64_t cbMem, PCIRAWMEMINFOACTION enmAction));
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typedef FNRAWPCICONTIGPHYSMEMINFO *PFNRAWPCICONTIGPHYSMEMINFO;
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/** Data being part of the VM structure. */
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typedef struct RAWPCIPERVM
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{
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/** Shall only be interpreted by the host PCI driver. */
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RTR0PTR pDriverData;
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/** Callback called when mapping of host pages to the guest changes. */
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PFNRAWPCICONTIGPHYSMEMINFO pfnContigMemInfo;
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/** Flags describing VM capabilities (such as IOMMU presence). */
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uint32_t fVmCaps;
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} RAWPCIPERVM;
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typedef RAWPCIPERVM *PRAWPCIPERVM;
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/** Parameters buffer for PCIRAWR0_DO_OPEN_DEVICE call */
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typedef struct
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{
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/* in */
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uint32_t PciAddress;
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uint32_t fFlags;
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/* out */
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PCIRAWDEVHANDLE Device;
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uint32_t fDevFlags;
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} PCIRAWREQOPENDEVICE;
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/** Parameters buffer for PCIRAWR0_DO_CLOSE_DEVICE call */
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typedef struct
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{
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/* in */
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uint32_t fFlags;
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} PCIRAWREQCLOSEDEVICE;
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/** Parameters buffer for PCIRAWR0_DO_GET_REGION_INFO call */
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typedef struct
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{
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/* in */
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int32_t iRegion;
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/* out */
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RTGCPHYS RegionStart;
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uint64_t u64RegionSize;
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bool fPresent;
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uint32_t fFlags;
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} PCIRAWREQGETREGIONINFO;
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/** Parameters buffer for PCIRAWR0_DO_MAP_REGION call. */
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typedef struct
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{
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/* in */
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RTGCPHYS StartAddress;
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uint64_t iRegionSize;
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int32_t iRegion;
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uint32_t fFlags;
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/* out */
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RTR3PTR pvAddressR3;
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RTR0PTR pvAddressR0;
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} PCIRAWREQMAPREGION;
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/** Parameters buffer for PCIRAWR0_DO_UNMAP_REGION call. */
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typedef struct
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{
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/* in */
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RTGCPHYS StartAddress;
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uint64_t iRegionSize;
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RTR3PTR pvAddressR3;
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RTR0PTR pvAddressR0;
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int32_t iRegion;
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} PCIRAWREQUNMAPREGION;
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/** Parameters buffer for PCIRAWR0_DO_PIO_WRITE call. */
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typedef struct
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{
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/* in */
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uint16_t iPort;
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uint16_t cb;
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uint32_t iValue;
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} PCIRAWREQPIOWRITE;
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/** Parameters buffer for PCIRAWR0_DO_PIO_READ call. */
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typedef struct
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{
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/* in */
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uint16_t iPort;
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uint16_t cb;
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/* out */
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uint32_t iValue;
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} PCIRAWREQPIOREAD;
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/** Memory operand. */
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typedef struct
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{
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union
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{
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uint8_t u8;
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uint16_t u16;
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uint32_t u32;
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uint64_t u64;
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} u;
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uint8_t cb;
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} PCIRAWMEMLOC;
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/** Parameters buffer for PCIRAWR0_DO_MMIO_WRITE call. */
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typedef struct
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{
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/* in */
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RTR0PTR Address;
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PCIRAWMEMLOC Value;
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} PCIRAWREQMMIOWRITE;
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/** Parameters buffer for PCIRAWR0_DO_MMIO_READ call. */
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typedef struct
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{
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/* in */
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RTR0PTR Address;
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/* inout (Value.cb is in) */
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PCIRAWMEMLOC Value;
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} PCIRAWREQMMIOREAD;
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/* Parameters buffer for PCIRAWR0_DO_PCICFG_WRITE call. */
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typedef struct
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{
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/* in */
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uint32_t iOffset;
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PCIRAWMEMLOC Value;
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} PCIRAWREQPCICFGWRITE;
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/** Parameters buffer for PCIRAWR0_DO_PCICFG_READ call. */
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typedef struct
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{
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/* in */
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uint32_t iOffset;
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/* inout (Value.cb is in) */
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PCIRAWMEMLOC Value;
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} PCIRAWREQPCICFGREAD;
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/** Parameters buffer for PCIRAWR0_DO_GET_IRQ call. */
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typedef struct PCIRAWREQGETIRQ
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{
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/* in */
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int64_t iTimeout;
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/* out */
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int32_t iIrq;
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} PCIRAWREQGETIRQ;
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/** Parameters buffer for PCIRAWR0_DO_POWER_STATE_CHANGE call. */
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typedef struct PCIRAWREQPOWERSTATECHANGE
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{
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/* in */
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uint32_t iState;
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/* in/out */
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uint64_t u64Param;
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} PCIRAWREQPOWERSTATECHANGE;
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/**
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* Request buffer use for communication with the driver.
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*/
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typedef struct PCIRAWSENDREQ
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{
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/** The request header. */
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SUPVMMR0REQHDR Hdr;
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/** Alternative to passing the taking the session from the VM handle.
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* Either use this member or use the VM handle, don't do both.
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*/
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PSUPDRVSESSION pSession;
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/** Request type. */
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int32_t iRequest;
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/** Host device request targetted to. */
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PCIRAWDEVHANDLE TargetDevice;
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/** Call parameters. */
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union
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{
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PCIRAWREQOPENDEVICE aOpenDevice;
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PCIRAWREQCLOSEDEVICE aCloseDevice;
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PCIRAWREQGETREGIONINFO aGetRegionInfo;
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PCIRAWREQMAPREGION aMapRegion;
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PCIRAWREQUNMAPREGION aUnmapRegion;
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PCIRAWREQPIOWRITE aPioWrite;
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PCIRAWREQPIOREAD aPioRead;
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PCIRAWREQMMIOWRITE aMmioWrite;
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PCIRAWREQMMIOREAD aMmioRead;
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PCIRAWREQPCICFGWRITE aPciCfgWrite;
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PCIRAWREQPCICFGREAD aPciCfgRead;
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PCIRAWREQGETIRQ aGetIrq;
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PCIRAWREQPOWERSTATECHANGE aPowerStateChange;
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} u;
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} PCIRAWSENDREQ;
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typedef PCIRAWSENDREQ *PPCIRAWSENDREQ;
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/**
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* Operations performed by the driver.
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*/
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typedef enum PCIRAWR0OPERATION
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{
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/* Open device. */
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PCIRAWR0_DO_OPEN_DEVICE,
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/* Close device. */
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PCIRAWR0_DO_CLOSE_DEVICE,
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/* Get PCI region info. */
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PCIRAWR0_DO_GET_REGION_INFO,
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/* Map PCI region into VM address space. */
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PCIRAWR0_DO_MAP_REGION,
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/* Unmap PCI region from VM address space. */
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PCIRAWR0_DO_UNMAP_REGION,
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/* Perform PIO write. */
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PCIRAWR0_DO_PIO_WRITE,
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/* Perform PIO read. */
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PCIRAWR0_DO_PIO_READ,
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/* Perform MMIO write. */
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PCIRAWR0_DO_MMIO_WRITE,
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/* Perform MMIO read. */
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PCIRAWR0_DO_MMIO_READ,
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/* Perform PCI config write. */
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PCIRAWR0_DO_PCICFG_WRITE,
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/* Perform PCI config read. */
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PCIRAWR0_DO_PCICFG_READ,
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/* Get next IRQ for the device. */
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PCIRAWR0_DO_GET_IRQ,
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/* Enable getting IRQs for the device. */
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PCIRAWR0_DO_ENABLE_IRQ,
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/* Disable getting IRQs for the device. */
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PCIRAWR0_DO_DISABLE_IRQ,
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/* Notify driver about guest power state change. */
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PCIRAWR0_DO_POWER_STATE_CHANGE,
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/** The usual 32-bit type blow up. */
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PCIRAWR0_DO_32BIT_HACK = 0x7fffffff
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} PCIRAWR0OPERATION;
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/**
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* Power state enumeration.
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*/
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typedef enum PCIRAWPOWERSTATE
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{
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/* Power on. */
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PCIRAW_POWER_ON,
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/* Power off. */
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PCIRAW_POWER_OFF,
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/* Suspend. */
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PCIRAW_POWER_SUSPEND,
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/* Resume. */
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PCIRAW_POWER_RESUME,
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/* Reset. */
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PCIRAW_POWER_RESET,
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/** The usual 32-bit type blow up. */
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PCIRAW_POWER_32BIT_HACK = 0x7fffffff
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} PCIRAWPOWERSTATE;
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/** Forward declarations. */
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typedef struct RAWPCIFACTORY *PRAWPCIFACTORY;
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typedef struct RAWPCIDEVPORT *PRAWPCIDEVPORT;
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/**
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* Interrupt service routine callback.
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*
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* @returns if interrupt was processed.
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*
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* @param pvContext Opaque user data passed to the handler.
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* @param iIrq Interrupt number.
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*/
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typedef DECLCALLBACKTYPE(bool, FNRAWPCIISR,(void *pvContext, int32_t iIrq));
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typedef FNRAWPCIISR *PFNRAWPCIISR;
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/**
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* This is the port on the device interface, i.e. the driver side which the
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* host device is connected to.
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*
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* This is only used for the in-kernel PCI device connections.
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*/
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typedef struct RAWPCIDEVPORT
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{
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/** Structure version number. (RAWPCIDEVPORT_VERSION) */
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uint32_t u32Version;
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/**
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* Init device.
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*
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* @param pPort Pointer to this structure.
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* @param fFlags Initialization flags.
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*/
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DECLR0CALLBACKMEMBER(int, pfnInit,(PRAWPCIDEVPORT pPort,
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uint32_t fFlags));
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/**
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* Deinit device.
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*
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* @param pPort Pointer to this structure.
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* @param fFlags Initialization flags.
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*/
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DECLR0CALLBACKMEMBER(int, pfnDeinit,(PRAWPCIDEVPORT pPort,
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uint32_t fFlags));
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/**
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* Destroy device.
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*
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* @param pPort Pointer to this structure.
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*/
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DECLR0CALLBACKMEMBER(int, pfnDestroy,(PRAWPCIDEVPORT pPort));
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/**
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* Get PCI region info.
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*
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* @param pPort Pointer to this structure.
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* @param iRegion Region number.
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* @param pRegionStart Where to start the region address.
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* @param pu64RegionSize Where to store the region size.
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* @param pfPresent Where to store if the region is present.
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* @param pfFlags Where to store the flags.
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*/
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DECLR0CALLBACKMEMBER(int, pfnGetRegionInfo,(PRAWPCIDEVPORT pPort,
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int32_t iRegion,
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RTHCPHYS *pRegionStart,
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uint64_t *pu64RegionSize,
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bool *pfPresent,
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uint32_t *pfFlags));
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/**
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* Map PCI region.
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*
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* @param pPort Pointer to this structure.
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* @param iRegion Region number.
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* @param RegionStart Region start.
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* @param u64RegionSize Region size.
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* @param fFlags Flags.
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* @param pRegionBaseR0 Where to store the R0 address.
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*/
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DECLR0CALLBACKMEMBER(int, pfnMapRegion,(PRAWPCIDEVPORT pPort,
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int32_t iRegion,
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RTHCPHYS RegionStart,
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uint64_t u64RegionSize,
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int32_t fFlags,
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RTR0PTR *pRegionBaseR0));
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/**
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* Unmap PCI region.
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*
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* @param pPort Pointer to this structure.
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* @param iRegion Region number.
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* @param RegionStart Region start.
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* @param u64RegionSize Region size.
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* @param RegionBase Base address.
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*/
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DECLR0CALLBACKMEMBER(int, pfnUnmapRegion,(PRAWPCIDEVPORT pPort,
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int32_t iRegion,
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RTHCPHYS RegionStart,
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uint64_t u64RegionSize,
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RTR0PTR RegionBase));
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/**
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* Read device PCI register.
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*
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* @param pPort Pointer to this structure.
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* @param Register PCI register.
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* @param pValue Read value (with desired read width).
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*/
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DECLR0CALLBACKMEMBER(int, pfnPciCfgRead,(PRAWPCIDEVPORT pPort,
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uint32_t Register,
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PCIRAWMEMLOC *pValue));
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|
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/**
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* Write device PCI register.
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*
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* @param pPort Pointer to this structure.
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* @param Register PCI register.
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* @param pValue Write value (with desired write width).
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*/
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DECLR0CALLBACKMEMBER(int, pfnPciCfgWrite,(PRAWPCIDEVPORT pPort,
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uint32_t Register,
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PCIRAWMEMLOC *pValue));
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/**
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* Request to register interrupt handler.
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*
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* @param pPort Pointer to this structure.
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* @param pfnHandler Pointer to the handler.
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* @param pIrqContext Context passed to the handler.
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* @param phIsr Handle for the ISR, .
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*/
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DECLR0CALLBACKMEMBER(int, pfnRegisterIrqHandler,(PRAWPCIDEVPORT pPort,
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PFNRAWPCIISR pfnHandler,
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void* pIrqContext,
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PCIRAWISRHANDLE *phIsr));
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/**
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* Request to unregister interrupt handler.
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*
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* @param pPort Pointer to this structure.
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* @param hIsr Handle of ISR to unregister (retured by earlier pfnRegisterIrqHandler).
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*/
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DECLR0CALLBACKMEMBER(int, pfnUnregisterIrqHandler,(PRAWPCIDEVPORT pPort,
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PCIRAWISRHANDLE hIsr));
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/**
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* Power state change notification.
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*
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* @param pPort Pointer to this structure.
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* @param aState New power state.
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* @param pu64Param State-specific in/out parameter.
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*/
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DECLR0CALLBACKMEMBER(int, pfnPowerStateChange,(PRAWPCIDEVPORT pPort,
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PCIRAWPOWERSTATE aState,
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uint64_t *pu64Param));
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/** Structure version number. (RAWPCIDEVPORT_VERSION) */
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uint32_t u32VersionEnd;
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} RAWPCIDEVPORT;
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/** Version number for the RAWPCIDEVPORT::u32Version and RAWPCIIFPORT::u32VersionEnd fields. */
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#define RAWPCIDEVPORT_VERSION UINT32_C(0xAFBDCC02)
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/**
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* The component factory interface for create a raw PCI interfaces.
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*/
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typedef struct RAWPCIFACTORY
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{
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/**
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* Release this factory.
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*
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* SUPR0ComponentQueryFactory (SUPDRVFACTORY::pfnQueryFactoryInterface to be precise)
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* will retain a reference to the factory and the caller has to call this method to
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* release it once the pfnCreateAndConnect call(s) has been done.
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*
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* @param pFactory Pointer to this structure.
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*/
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DECLR0CALLBACKMEMBER(void, pfnRelease,(PRAWPCIFACTORY pFactory));
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/**
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* Create an instance for the specfied host PCI card and connects it
|
|
* to the driver.
|
|
*
|
|
*
|
|
* @returns VBox status code.
|
|
*
|
|
* @param pFactory Pointer to this structure.
|
|
* @param u32HostAddress Address of PCI device on the host.
|
|
* @param fFlags Creation flags.
|
|
* @param pVmCtx Context of VM where device is created.
|
|
* @param ppDevPort Where to store the pointer to the device port
|
|
* on success.
|
|
* @param pfDevFlags Where to store the device flags.
|
|
*
|
|
*/
|
|
DECLR0CALLBACKMEMBER(int, pfnCreateAndConnect,(PRAWPCIFACTORY pFactory,
|
|
uint32_t u32HostAddress,
|
|
uint32_t fFlags,
|
|
PRAWPCIPERVM pVmCtx,
|
|
PRAWPCIDEVPORT *ppDevPort,
|
|
uint32_t *pfDevFlags));
|
|
|
|
|
|
/**
|
|
* Initialize per-VM data related to PCI passthrough.
|
|
*
|
|
* @returns VBox status code.
|
|
*
|
|
* @param pFactory Pointer to this structure.
|
|
* @param pVM The cross context VM structure.
|
|
* @param pVmData Pointer to PCI data.
|
|
*/
|
|
DECLR0CALLBACKMEMBER(int, pfnInitVm,(PRAWPCIFACTORY pFactory,
|
|
PVM pVM,
|
|
PRAWPCIPERVM pVmData));
|
|
|
|
/**
|
|
* Deinitialize per-VM data related to PCI passthrough.
|
|
*
|
|
* @param pFactory Pointer to this structure.
|
|
* @param pVM The cross context VM structure.
|
|
* @param pVmData Pointer to PCI data.
|
|
*/
|
|
DECLR0CALLBACKMEMBER(void, pfnDeinitVm,(PRAWPCIFACTORY pFactory,
|
|
PVM pVM,
|
|
PRAWPCIPERVM pVmData));
|
|
} RAWPCIFACTORY;
|
|
|
|
#define RAWPCIFACTORY_UUID_STR "ea089839-4171-476f-adfb-9e7ab1cbd0fb"
|
|
|
|
/**
|
|
* Flags passed to pfnPciDeviceConstructStart(), to notify driver
|
|
* about options to be used to open device.
|
|
*/
|
|
typedef enum PCIRAWDRIVERFLAGS
|
|
{
|
|
/** If runtime shall try to detach host driver. */
|
|
PCIRAWDRIVERRFLAG_DETACH_HOST_DRIVER = (1 << 0),
|
|
/** The usual 32-bit type blow up. */
|
|
PCIRAWDRIVERRFLAG_32BIT_HACK = 0x7fffffff
|
|
} PCIRAWDRIVERFLAGS;
|
|
|
|
/**
|
|
* Flags used to describe PCI region, matches to PCIADDRESSSPACE
|
|
* in pci.h.
|
|
*/
|
|
typedef enum PCIRAWADDRESSSPACE
|
|
{
|
|
/** Memory. */
|
|
PCIRAW_ADDRESS_SPACE_MEM = 0x00,
|
|
/** I/O space. */
|
|
PCIRAW_ADDRESS_SPACE_IO = 0x01,
|
|
/** 32-bit BAR. */
|
|
PCIRAW_ADDRESS_SPACE_BAR32 = 0x00,
|
|
/** 64-bit BAR. */
|
|
PCIRAW_ADDRESS_SPACE_BAR64 = 0x04,
|
|
/** Prefetch memory. */
|
|
PCIRAW_ADDRESS_SPACE_MEM_PREFETCH = 0x08,
|
|
/** The usual 32-bit type blow up. */
|
|
PCIRAW_ADDRESS_SPACE_32BIT_HACK = 0x7fffffff
|
|
} PCIRAWADDRESSSPACE;
|
|
|
|
RT_C_DECLS_END
|
|
|
|
/* #define VBOX_WITH_SHARED_PCI_INTERRUPTS */
|
|
|
|
#endif /* !VBOX_INCLUDED_rawpci_h */
|