| 1 | /* $Id: HGSMIHost.h 82968 2020-02-04 10:35:17Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBox Host Guest Shared Memory Interface (HGSMI), host part.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2020 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 | #ifndef VBOX_INCLUDED_SRC_Graphics_HGSMI_HGSMIHost_h
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| 19 | #define VBOX_INCLUDED_SRC_Graphics_HGSMI_HGSMIHost_h
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| 20 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 21 | # pragma once
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| 22 | #endif
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| 23 |
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| 24 | #include <VBox/types.h>
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| 25 | #include <HGSMI.h>
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| 26 | #include <HGSMIChSetup.h>
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| 27 |
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| 28 | struct HGSMIINSTANCE;
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| 29 | typedef struct HGSMIINSTANCE *PHGSMIINSTANCE;
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| 30 |
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| 31 | /** Callback for the guest notification about a new host buffer. */
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| 32 | typedef DECLCALLBACK(void) FNHGSMINOTIFYGUEST(void *pvCallback);
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| 33 | typedef FNHGSMINOTIFYGUEST *PFNHGSMINOTIFYGUEST;
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| 34 |
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| 35 | /*
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| 36 | * Public Host API for virtual devices.
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| 37 | */
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| 38 |
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| 39 | int HGSMICreate(PHGSMIINSTANCE *ppIns,
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| 40 | PVM pVM,
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| 41 | const char *pszName,
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| 42 | HGSMIOFFSET offBase,
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| 43 | uint8_t *pu8MemBase,
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| 44 | HGSMISIZE cbMem,
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| 45 | PFNHGSMINOTIFYGUEST pfnNotifyGuest,
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| 46 | void *pvNotifyGuest,
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| 47 | size_t cbContext);
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| 48 | void HGSMIDestroy(PHGSMIINSTANCE pIns);
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| 49 | void *HGSMIContext(PHGSMIINSTANCE pIns);
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| 50 |
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| 51 | void RT_UNTRUSTED_VOLATILE_GUEST *HGSMIOffsetToPointerHost(PHGSMIINSTANCE pIns, HGSMIOFFSET offBuffer);
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| 52 | HGSMIOFFSET HGSMIPointerToOffsetHost(PHGSMIINSTANCE pIns, const void RT_UNTRUSTED_VOLATILE_GUEST *pv);
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| 53 | bool HGSMIIsOffsetValid(PHGSMIINSTANCE pIns, HGSMIOFFSET offBuffer);
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| 54 | HGSMIOFFSET HGSMIGetAreaOffset(PHGSMIINSTANCE pIns);
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| 55 | HGSMIOFFSET HGSMIGetAreaSize(PHGSMIINSTANCE pIns);
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| 56 |
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| 57 |
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| 58 | int HGSMIHostChannelRegister(PHGSMIINSTANCE pIns, uint8_t u8Channel,
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| 59 | PFNHGSMICHANNELHANDLER pfnChannelHandler, void *pvChannelHandler);
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| 60 | #if 0 /* unused */
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| 61 | int HGSMIChannelRegisterName (PHGSMIINSTANCE pIns,
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| 62 | const char *pszChannel,
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| 63 | PFNHGSMICHANNELHANDLER pfnChannelHandler,
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| 64 | void *pvChannelHandler,
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| 65 | uint8_t *pu8Channel);
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| 66 | #endif
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| 67 |
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| 68 | int HGSMIHostHeapSetup(PHGSMIINSTANCE pIns, HGSMIOFFSET RT_UNTRUSTED_GUEST offHeap, HGSMISIZE RT_UNTRUSTED_GUEST cbHeap);
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| 69 |
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| 70 | /*
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| 71 | * Virtual hardware IO handlers.
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| 72 | */
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| 73 |
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| 74 | /* Guests passes a new command buffer to the host. */
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| 75 | void HGSMIGuestWrite(PHGSMIINSTANCE pIns, HGSMIOFFSET offBuffer);
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| 76 |
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| 77 | /* Guest reads information about guest buffers. */
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| 78 | HGSMIOFFSET HGSMIGuestRead(PHGSMIINSTANCE pIns);
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| 79 |
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| 80 | /* Guest reads the host FIFO to get a command. */
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| 81 | HGSMIOFFSET HGSMIHostRead(PHGSMIINSTANCE pIns);
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| 82 |
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| 83 | /* Guest reports that the command at this offset has been processed. */
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| 84 | void HGSMIHostWrite(PHGSMIINSTANCE pIns, HGSMIOFFSET offBuffer);
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| 85 |
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| 86 | void HGSMISetHostGuestFlags(PHGSMIINSTANCE pIns, uint32_t flags);
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| 87 | uint32_t HGSMIGetHostGuestFlags(HGSMIINSTANCE *pIns);
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| 88 |
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| 89 | void HGSMIClearHostGuestFlags(PHGSMIINSTANCE pIns, uint32_t flags);
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| 90 |
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| 91 | /*
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| 92 | * Low level interface for submitting buffers to the guest.
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| 93 | *
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| 94 | * These functions are not directly available for anyone but the
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| 95 | * virtual hardware device.
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| 96 | */
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| 97 |
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| 98 | /* Allocate a buffer in the host heap. */
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| 99 | int HGSMIHostCommandAlloc(PHGSMIINSTANCE pIns, void RT_UNTRUSTED_VOLATILE_GUEST **ppvData, HGSMISIZE cbData,
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| 100 | uint8_t u8Channel, uint16_t u16ChannelInfo);
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| 101 | int HGSMIHostCommandSubmitAndFreeAsynch(PHGSMIINSTANCE pIns, void RT_UNTRUSTED_VOLATILE_GUEST *pvData, bool fDoIrq);
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| 102 | int HGSMIHostCommandFree(PHGSMIINSTANCE pIns, void RT_UNTRUSTED_VOLATILE_GUEST *pvData);
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| 103 |
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| 104 | int HGSMIHostLoadStateExec(const struct PDMDEVHLPR3 *pHlp, PHGSMIINSTANCE pIns, PSSMHANDLE pSSM, uint32_t u32Version);
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| 105 | int HGSMIHostSaveStateExec(const struct PDMDEVHLPR3 *pHlp, PHGSMIINSTANCE pIns, PSSMHANDLE pSSM);
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| 106 |
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| 107 | #ifdef VBOX_WITH_WDDM
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| 108 | int HGSMICompleteGuestCommand(PHGSMIINSTANCE pIns, void RT_UNTRUSTED_VOLATILE_GUEST *pvMem, bool fDoIrq);
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| 109 | #endif
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| 110 |
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| 111 | #endif /* !VBOX_INCLUDED_SRC_Graphics_HGSMI_HGSMIHost_h */
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| 112 |
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