| 1 | /* $Id: pdmpcidevint.h 96407 2022-08-22 17:43:14Z vboxsync $ */
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| 2 | /** @file
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| 3 | * DevPCI - PDM PCI Internal header - Only for hiding bits of PDMPCIDEV.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2022 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 | #ifndef VBOX_INCLUDED_vmm_pdmpcidevint_h
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| 38 | #define VBOX_INCLUDED_vmm_pdmpcidevint_h
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| 39 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 40 | # pragma once
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| 41 | #endif
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| 42 |
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| 43 | #include <VBox/vmm/pdmdev.h>
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| 44 |
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| 45 | /** @defgroup grp_pdm_pcidev_int The PDM PCI Device Internals
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| 46 | * @ingroup grp_pdm_pcidev
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| 47 | *
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| 48 | * @remarks The PDM PCI device internals are visible to both PDM and the PCI Bus
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| 49 | * implementation, thus it lives among the the public headers despite
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| 50 | * being rather private and internal.
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| 51 | *
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| 52 | * @{
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| 53 | */
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| 54 |
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| 55 |
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| 56 | /**
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| 57 | * PCI I/O region.
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| 58 | */
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| 59 | typedef struct PCIIOREGION
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| 60 | {
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| 61 | /** Current PCI mapping address, INVALID_PCI_ADDRESS (0xffffffff) means not mapped. */
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| 62 | uint64_t addr;
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| 63 | /** The region size. Power of 2. */
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| 64 | uint64_t size;
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| 65 | /** Handle or UINT64_MAX (see PDMPCIDEV_IORGN_F_HANDLE_MASK in fFlags). */
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| 66 | uint64_t hHandle;
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| 67 | /** PDMPCIDEV_IORGN_F_XXXX. */
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| 68 | uint32_t fFlags;
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| 69 | /** PCIADDRESSSPACE */
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| 70 | uint8_t type;
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| 71 | uint8_t abPadding0[3];
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| 72 | /** Callback called when the region is mapped or unmapped (new style devs). */
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| 73 | R3PTRTYPE(PFNPCIIOREGIONMAP) pfnMap;
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| 74 | #if R3_ARCH_BITS == 32
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| 75 | uint32_t u32Padding2;
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| 76 | #endif
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| 77 | } PCIIOREGION;
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| 78 | AssertCompileSize(PCIIOREGION, 5*8);
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| 79 | /** Pointer to a PCI I/O region. */
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| 80 | typedef PCIIOREGION *PPCIIOREGION;
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| 81 | /** Pointer to a const PCI I/O region. */
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| 82 | typedef PCIIOREGION const *PCPCIIOREGION;
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| 83 |
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| 84 | /**
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| 85 | * Callback function for reading from the PCI configuration space.
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| 86 | *
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| 87 | * @returns Strict VBox status code.
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| 88 | * @param pDevIns Pointer to the device instance of the PCI bus.
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| 89 | * @param iBus The bus number this device is on.
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| 90 | * @param iDevice The number of the device on the bus.
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| 91 | * @param u32Address The configuration space register address. [0..255]
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| 92 | * @param cb The register size. [1,2,4]
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| 93 | * @param pu32Value Where to return the register value.
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| 94 | */
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| 95 | typedef DECLCALLBACKTYPE(VBOXSTRICTRC, FNPCIBRIDGECONFIGREAD,(PPDMDEVINSR3 pDevIns, uint8_t iBus, uint8_t iDevice,
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| 96 | uint32_t u32Address, unsigned cb, uint32_t *pu32Value));
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| 97 | /** Pointer to a FNPCICONFIGREAD() function. */
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| 98 | typedef FNPCIBRIDGECONFIGREAD *PFNPCIBRIDGECONFIGREAD;
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| 99 | #if !RT_CLANG_PREREQ(11, 0) /* Clang 11 (at least) has trouble with nothrow and pointers to function pointers. */
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| 100 | /** Pointer to a PFNPCICONFIGREAD. */
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| 101 | typedef PFNPCIBRIDGECONFIGREAD *PPFNPCIBRIDGECONFIGREAD;
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| 102 | #endif
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| 103 |
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| 104 | /**
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| 105 | * Callback function for writing to the PCI configuration space.
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| 106 | *
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| 107 | * @returns Strict VBox status code.
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| 108 | * @param pDevIns Pointer to the device instance of the PCI bus.
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| 109 | * @param iBus The bus number this device is on.
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| 110 | * @param iDevice The number of the device on the bus.
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| 111 | * @param u32Address The configuration space register address. [0..255]
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| 112 | * @param cb The register size. [1,2,4]
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| 113 | * @param u32Value The value that's being written. The number of bits actually used from
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| 114 | * this value is determined by the cb parameter.
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| 115 | */
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| 116 | typedef DECLCALLBACKTYPE(VBOXSTRICTRC, FNPCIBRIDGECONFIGWRITE,(PPDMDEVINSR3 pDevIns, uint8_t iBus, uint8_t iDevice,
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| 117 | uint32_t u32Address, unsigned cb, uint32_t u32Value));
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| 118 | /** Pointer to a FNPCICONFIGWRITE() function. */
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| 119 | typedef FNPCIBRIDGECONFIGWRITE *PFNPCIBRIDGECONFIGWRITE;
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| 120 | #if !RT_CLANG_PREREQ(11, 0) /* Clang 11 (at least) has trouble with nothrow and pointers to function pointers. */
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| 121 | /** Pointer to a PFNPCICONFIGWRITE. */
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| 122 | typedef PFNPCIBRIDGECONFIGWRITE *PPFNPCIBRIDGECONFIGWRITE;
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| 123 | #endif
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| 124 |
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| 125 | /* Forward declaration */
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| 126 | struct DEVPCIBUS;
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| 127 |
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| 128 | enum {
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| 129 | /** Flag whether the device is a pci-to-pci bridge.
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| 130 | * This is set prior to device registration. */
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| 131 | PCIDEV_FLAG_PCI_TO_PCI_BRIDGE = RT_BIT_32(1),
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| 132 | /** Flag whether the device is a PCI Express device.
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| 133 | * This is set prior to device registration. */
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| 134 | PCIDEV_FLAG_PCI_EXPRESS_DEVICE = RT_BIT_32(2),
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| 135 | /** Flag whether the device is capable of MSI.
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| 136 | * This one is set by MsiInit(). */
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| 137 | PCIDEV_FLAG_MSI_CAPABLE = RT_BIT_32(3),
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| 138 | /** Flag whether the device is capable of MSI-X.
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| 139 | * This one is set by MsixInit(). */
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| 140 | PCIDEV_FLAG_MSIX_CAPABLE = RT_BIT_32(4),
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| 141 | /** Flag if device represents real physical device in passthrough mode. */
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| 142 | PCIDEV_FLAG_PASSTHROUGH = RT_BIT_32(5),
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| 143 | /** Flag whether the device is capable of MSI using 64-bit address. */
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| 144 | PCIDEV_FLAG_MSI64_CAPABLE = RT_BIT_32(6)
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| 145 |
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| 146 | };
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| 147 |
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| 148 |
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| 149 | /**
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| 150 | * PDM PCI Device - Internal data.
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| 151 | *
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| 152 | * @sa PDMPCIDEV
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| 153 | */
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| 154 | typedef struct PDMPCIDEVINT
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| 155 | {
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| 156 | /** @name Owned by PDM.
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| 157 | * @remarks The bus may use the device instance pointers.
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| 158 | * @{
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| 159 | */
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| 160 | /** Pointer to the PDM device the PCI device belongs to. (R3 ptr) */
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| 161 | PPDMDEVINSR3 pDevInsR3;
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| 162 | /** The CFGM device configuration index (default, PciDev1..255).
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| 163 | * This also works as the internal sub-device ordinal with MMIOEx.
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| 164 | * @note Same value as idxSubDev, can therefore be removed later. */
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| 165 | uint8_t idxDevCfg;
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| 166 | /** Set if the it can be reassigned to a different PCI device number. */
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| 167 | bool fReassignableDevNo;
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| 168 | /** Set if the it can be reassigned to a different PCI function number. */
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| 169 | bool fReassignableFunNo;
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| 170 | /** Alignment padding - used by ICH9 for region swapping (DevVGA hack). */
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| 171 | uint8_t bPadding0;
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| 172 | /** Index into the PDM internal bus array (PDM::aPciBuses). */
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| 173 | uint8_t idxPdmBus;
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| 174 | /** Set if this device has been registered. */
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| 175 | bool fRegistered;
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| 176 | /** Index into PDMDEVINSR3::apPciDevs (same as PDMPCIDEV::idxSubDev). */
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| 177 | uint16_t idxSubDev;
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| 178 | /** @} */
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| 179 |
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| 180 | /** @name Owned by the PCI Bus
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| 181 | * @remarks PDM will not touch anything here (includes not relocating anything).
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| 182 | * @{
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| 183 | */
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| 184 | /** Pointer to the PCI bus of the device. (R3 ptr) */
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| 185 | R3PTRTYPE(struct DEVPCIBUS *) pBusR3;
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| 186 | /** Read config callback. */
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| 187 | R3PTRTYPE(PFNPCICONFIGREAD) pfnConfigRead;
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| 188 | /** Write config callback. */
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| 189 | R3PTRTYPE(PFNPCICONFIGWRITE) pfnConfigWrite;
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| 190 | /** Read config callback for PCI bridges to pass requests
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| 191 | * to devices on another bus. */
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| 192 | R3PTRTYPE(PFNPCIBRIDGECONFIGREAD) pfnBridgeConfigRead;
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| 193 | /** Write config callback for PCI bridges to pass requests
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| 194 | * to devices on another bus. */
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| 195 | R3PTRTYPE(PFNPCIBRIDGECONFIGWRITE) pfnBridgeConfigWrite;
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| 196 |
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| 197 | /** Flags of this PCI device, see PCIDEV_FLAG_XXX constants. */
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| 198 | uint32_t fFlags;
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| 199 | /** Current state of the IRQ pin of the device. */
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| 200 | int32_t uIrqPinState;
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| 201 |
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| 202 | /** Offset of MSI PCI capability in config space, or 0.
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| 203 | * @todo fix non-standard naming. */
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| 204 | uint8_t u8MsiCapOffset;
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| 205 | /** Size of MSI PCI capability in config space, or 0.
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| 206 | * @todo fix non-standard naming. */
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| 207 | uint8_t u8MsiCapSize;
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| 208 | /** Offset of MSI-X PCI capability in config space, or 0.
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| 209 | * @todo fix non-standard naming. */
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| 210 | uint8_t u8MsixCapOffset;
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| 211 | /** Size of MSI-X PCI capability in config space, or 0.
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| 212 | * @todo fix non-standard naming. */
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| 213 | uint8_t u8MsixCapSize;
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| 214 | /** Size of the MSI-X region. */
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| 215 | uint16_t cbMsixRegion;
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| 216 | /** Offset to the PBA for MSI-X. */
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| 217 | uint16_t offMsixPba;
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| 218 | /** Add padding to align aIORegions to an 16 byte boundary. */
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| 219 | uint8_t abPadding2[HC_ARCH_BITS == 32 ? 12 : 8];
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| 220 | /** The MMIO handle for the MSI-X MMIO bar. */
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| 221 | IOMMMIOHANDLE hMmioMsix;
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| 222 |
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| 223 | /** Pointer to bus specific data. (R3 ptr) */
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| 224 | R3PTRTYPE(const void *) pvPciBusPtrR3;
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| 225 | /** I/O regions. */
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| 226 | PCIIOREGION aIORegions[VBOX_PCI_NUM_REGIONS];
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| 227 | /** @} */
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| 228 | } PDMPCIDEVINT;
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| 229 | AssertCompileMemberAlignment(PDMPCIDEVINT, aIORegions, 8);
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| 230 | AssertCompileSize(PDMPCIDEVINT, HC_ARCH_BITS == 32 ? 0x98 : 0x178);
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| 231 |
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| 232 | /** Indicate that PDMPCIDEV::Int.s can be declared. */
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| 233 | #define PDMPCIDEVINT_DECLARED
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| 234 |
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| 235 | /** @} */
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| 236 |
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| 237 | #endif /* !VBOX_INCLUDED_vmm_pdmpcidevint_h */
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| 238 |
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