SUPDRVIOC.h revision 7ef944090dd2ddde79d4483369d906389cec917e
/** @file
*
* VBox host drivers - Ring-0 support drivers - Shared code:
* IOCtl definitions
*/
/*
* Copyright (C) 2006 InnoTek Systemberatung GmbH
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License as published by the Free Software Foundation,
* in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
* distribution. VirtualBox OSE is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY of any kind.
*
* If you received this file as part of a commercial VirtualBox
* distribution, then only the terms of your commercial VirtualBox
* license agreement apply instead of the previous paragraph.
*/
#ifndef __SUPDRVIOC_h__
#define __SUPDRVIOC_h__
/*
* Basic types.
*/
#include <iprt/stdint.h>
/*
* IOCtl numbers.
* We're using the Win32 type of numbers here, thus the macros below.
* The SUP_IOCTL_FLAG macro is used to separate requests from 32-bit
* and 64-bit processes.
*/
#ifdef __AMD64__
# define SUP_IOCTL_FLAG 128
#elif defined(__X86__)
# define SUP_IOCTL_FLAG 0
#else
# error "dunno which arch this is!"
#endif
#ifdef __WIN__
# define SUP_CTL_CODE(Function) CTL_CODE(FILE_DEVICE_UNKNOWN, (Function) | SUP_IOCTL_FLAG, METHOD_BUFFERED, FILE_WRITE_ACCESS)
# define SUP_CTL_CODE_FAST(Function) CTL_CODE(FILE_DEVICE_UNKNOWN, (Function) | SUP_IOCTL_FLAG, METHOD_NEITHER, FILE_WRITE_ACCESS)
/** @todo get rid of this duplication of window header #defines! */
# ifndef CTL_CODE
# define CTL_CODE(DeviceType, Function, Method, Access) \
( ((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method) )
# endif
# ifndef METHOD_BUFFERED
# define METHOD_BUFFERED 0
# endif
# ifndef METHOD_NEITHER
# define METHOD_NEITHER 3
# endif
# ifndef FILE_WRITE_ACCESS
# define FILE_WRITE_ACCESS 0x0002
# endif
# ifndef FILE_DEVICE_UNKNOWN
# define FILE_DEVICE_UNKNOWN 0x00000022
# endif
#elif defined(__OS2__)
# define SUP_CTL_CATEGORY ((unsigned short)'V')
# define SUP_CTL_CODE(Function) ((unsigned short)(Function))
#elif defined(__LINUX__) || defined(__L4__)
# ifdef __X86__ /** @todo With the next major version change, drop this branch. */
# define SUP_CTL_CODE(Function) \
( (3U << 30) | ((0x22) << 8) | ((Function) | SUP_IOCTL_FLAG) | (sizeof(SUPDRVIOCTLDATA) << 16) )
# define SUP_CTL_CODE_FAST(Function) \
( (3U << 30) | ((0x22) << 8) | ((Function) | SUP_IOCTL_FLAG) | (0 << 16) )
# else
# include <linux/ioctl.h>
# if 1 /* figure out when this changed. */
# define SUP_CTL_CODE(Function) _IOWR('V', (Function) | SUP_IOCTL_FLAG, SUPDRVIOCTLDATA)
# define SUP_CTL_CODE_FAST(Function) _IO( 'V', (Function) | SUP_IOCTL_FLAG)
# else /* now: _IO_BAD and _IOWR_BAD */
# define SUP_CTL_CODE(Function) _IOWR('V', (Function) | SUP_IOCTL_FLAG, sizeof(SUPDRVIOCTLDATA))
# define SUP_CTL_CODE_FAST(Function) _IO( 'V', (Function) | SUP_IOCTL_FLAG)
# endif
# endif
#else /* BSD */
# include <sys/ioccom.h>
# define SUP_CTL_CODE(Function) _IOWR('V', (Function) | SUP_IOCTL_FLAG, SUPDRVIOCTLDATA)
# define SUP_CTL_CODE_FAST(Function) _IO( 'V', (Function) | SUP_IOCTL_FLAG)
#endif
/** Negotiate cookie. */
#define SUP_IOCTL_COOKIE SUP_CTL_CODE( 1)
/** Query SUPR0 functions. */
#define SUP_IOCTL_QUERY_FUNCS SUP_CTL_CODE( 2)
/** Install IDT patch for calling processor. */
#define SUP_IOCTL_IDT_INSTALL SUP_CTL_CODE( 3)
/** Remove IDT patch for calling processor. */
#define SUP_IOCTL_IDT_REMOVE SUP_CTL_CODE( 4)
/** Pin down physical pages. */
#define SUP_IOCTL_PINPAGES SUP_CTL_CODE( 5)
/** Unpin physical pages. */
#define SUP_IOCTL_UNPINPAGES SUP_CTL_CODE( 6)
/** Allocate contious memory. */
#define SUP_IOCTL_CONT_ALLOC SUP_CTL_CODE( 7)
/** Free contious memory. */
#define SUP_IOCTL_CONT_FREE SUP_CTL_CODE( 8)
/** Open an image. */
#define SUP_IOCTL_LDR_OPEN SUP_CTL_CODE( 9)
/** Upload the image bits. */
#define SUP_IOCTL_LDR_LOAD SUP_CTL_CODE(10)
/** Free an image. */
#define SUP_IOCTL_LDR_FREE SUP_CTL_CODE(11)
/** Get address of a symbol within an image. */
#define SUP_IOCTL_LDR_GET_SYMBOL SUP_CTL_CODE(12)
/** Call the R0 VMM Entry point. */
#define SUP_IOCTL_CALL_VMMR0 SUP_CTL_CODE(14)
/** Get the host paging mode. */
#define SUP_IOCTL_GET_PAGING_MODE SUP_CTL_CODE(15)
/** Allocate memory below 4GB (physically). */
#define SUP_IOCTL_LOW_ALLOC SUP_CTL_CODE(16)
/** Free low memory. */
#define SUP_IOCTL_LOW_FREE SUP_CTL_CODE(17)
/** Map the GIP into user space. */
#define SUP_IOCTL_GIP_MAP SUP_CTL_CODE(18)
/** Unmap the GIP. */
#define SUP_IOCTL_GIP_UNMAP SUP_CTL_CODE(19)
/** Set the VM handle for doing fast call ioctl calls. */
#define SUP_IOCTL_SET_VM_FOR_FAST SUP_CTL_CODE(20)
/** Fast path IOCtl: VMMR0_DO_RAW_RUN */
#define SUP_IOCTL_FAST_DO_RAW_RUN SUP_CTL_CODE_FAST(64)
/** Fast path IOCtl: VMMR0_DO_HWACC_RUN */
#define SUP_IOCTL_FAST_DO_HWACC_RUN SUP_CTL_CODE_FAST(65)
/** Just a NOP call for profiling the latency of a fast ioctl call to VMMR0. */
#define SUP_IOCTL_FAST_DO_NOP SUP_CTL_CODE_FAST(66)
/*******************************************************************************
* Structures and Typedefs *
*******************************************************************************/
#ifdef __AMD64__
# pragma pack(8) /* paranoia. */
#else
# pragma pack(4) /* paranoia. */
#endif
#ifndef __WIN__
/**
* Structure used by OSes with less advanced ioctl interfaces, i.e. most
* Unix like OSes :-)
*/
typedef struct SUPDRVIOCTLDATA
{
void *pvIn;
unsigned long cbIn;
void *pvOut;
unsigned long cbOut;
} SUPDRVIOCTLDATA, *PSUPDRVIOCTLDATA;
#endif
/** SUP_IOCTL_COOKIE Input. */
typedef struct SUPCOOKIE_IN
{
/** Magic word. */
char szMagic[16];
/** The requested version number. */
uint32_t u32Version;
} SUPCOOKIE_IN, *PSUPCOOKIE_IN;
/** SUPCOOKIE_IN magic word. */
#define SUPCOOKIE_MAGIC "The Magic Word!"
/** Current interface version. */
#define SUPDRVIOC_VERSION 0x00030001
/** SUP_IOCTL_COOKIE Output. */
typedef struct SUPCOOKIE_OUT
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
/** Interface version. High word(=uint16) is major, low word is minor. */
uint32_t u32Version;
/** Number of functions available for the SUP_IOCTL_QUERY_FUNCS request. */
uint32_t cFunctions;
/** Session handle. */
PSUPDRVSESSION pSession;
} SUPCOOKIE_OUT, *PSUPCOOKIE_OUT;
/** SUP_IOCTL_QUERY_FUNCS Input. */
typedef struct SUPQUERYFUNCS_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
} SUPQUERYFUNCS_IN, *PSUPQUERYFUNCS_IN;
/** Function. */
typedef struct SUPFUNC
{
/** Name - mangled. */
char szName[32];
/** Address. */
void *pfn;
} SUPFUNC, *PSUPFUNC;
/** SUP_IOCTL_QUERY_FUNCS Output. */
typedef struct SUPQUERYFUNCS_OUT
{
/** Number of functions returned. */
uint32_t cFunctions;
/** Array of functions. */
SUPFUNC aFunctions[1];
} SUPQUERYFUNCS_OUT, *PSUPQUERYFUNCS_OUT;
/** SUP_IOCTL_IDT_INSTALL Input. */
typedef struct SUPIDTINSTALL_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
} SUPIDTINSTALL_IN, *PSUPIDTINSTALL_IN;
/** SUP_IOCTL_IDT_INSTALL Output. */
typedef struct SUPIDTINSTALL_OUT
{
/** Cookie. */
uint8_t u8Idt;
} SUPIDTINSTALL_OUT, *PSUPIDTINSTALL_OUT;
/** SUP_IOCTL_IDT_REMOVE Input. */
typedef struct SUPIDTREMOVE_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
} SUPIDTREMOVE_IN, *PSUPIDTREMOVE_IN;
/** SUP_IOCTL_PINPAGES Input. */
typedef struct SUPPINPAGES_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
/** Start of page range. Must be PAGE aligned. */
void *pv;
/** Size of the range. Must be PAGE aligned. */
uint32_t cb;
} SUPPINPAGES_IN, *PSUPPINPAGES_IN;
/** SUP_IOCTL_PINPAGES Output. */
typedef struct SUPPINPAGES_OUT
{
/** Array of pages. */
SUPPAGE aPages[1];
} SUPPINPAGES_OUT, *PSUPPINPAGES_OUT;
/** SUP_IOCTL_UNPINPAGES Input. */
typedef struct SUPUNPINPAGES_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
/** Start of page range of a range previuosly pinned. */
void *pv;
} SUPUNPINPAGES_IN, *PSUPUNPINPAGES_IN;
/** SUP_IOCTL_CONT_ALLOC Input. */
typedef struct SUPCONTALLOC_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
/** Number of bytes to allocate. */
uint32_t cb;
} SUPCONTALLOC_IN, *PSUPCONTALLOC_IN;
/** SUP_IOCTL_CONT_ALLOC Output. */
typedef struct SUPCONTALLOC_OUT
{
/** The address of the ring-0 mapping of the allocated memory. */
void *pvR0;
/** The address of the ring-3 mapping of the allocated memory. */
void *pvR3;
/** The physical address of the allocation. */
RTHCPHYS HCPhys;
} SUPCONTALLOC_OUT, *PSUPCONTALLOC_OUT;
/** SUP_IOCTL_CONT_FREE Input. */
typedef struct SUPCONTFREE_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
/** The address (virtual, not physical address) of the memory to free. */
void *pv;
} SUPCONTFREE_IN, *PSUPCONTFREE_IN;
/** SUP_IOCTL_LDR_OPEN Input. */
typedef struct SUPLDROPEN_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
/** Size of the image we'll be loading. */
uint32_t cbImage;
/** Image name.
* This is the NAME of the image, not the file name. It is used
* to share code with other processes. (Max len is 32 chars!) */
char szName[32];
} SUPLDROPEN_IN, *PSUPLDROPEN_IN;
/** SUP_IOCTL_LDR_OPEN Output. */
typedef struct SUPLDROPEN_OUT
{
/** The base address of the image. */
void *pvImageBase;
/** Indicate whether or not the image requires loading. */
bool fNeedsLoading;
} SUPLDROPEN_OUT, *PSUPLDROPEN_OUT;
/**
* Module initialization callback function.
* This is called once after the module has been loaded.
*
* @returns 0 on success.
* @returns Appropriate error code on failure.
*/
typedef DECLCALLBACK(int) FNR0MODULEINIT(void);
/** Pointer to a FNR0MODULEINIT(). */
typedef FNR0MODULEINIT *PFNR0MODULEINIT;
/**
* Module termination callback function.
* This is called once right before the module is being unloaded.
*/
typedef DECLCALLBACK(void) FNR0MODULETERM(void);
/** Pointer to a FNR0MODULETERM(). */
typedef FNR0MODULETERM *PFNR0MODULETERM;
/**
* Symbol table entry.
*/
typedef struct SUPLDRSYM
{
/** Offset into of the string table. */
uint32_t offName;
/** Offset of the symbol relative to the image load address. */
uint32_t offSymbol;
} SUPLDRSYM, *PSUPLDRSYM;
/** SUP_IOCTL_LDR_LOAD Input. */
typedef struct SUPLDRLOAD_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
/** The address of module initialization function. Similar to _DLL_InitTerm(hmod, 0). */
PFNR0MODULEINIT pfnModuleInit;
/** The address of module termination function. Similar to _DLL_InitTerm(hmod, 1). */
PFNR0MODULETERM pfnModuleTerm;
/** Special entry points. */
union
{
struct
{
/** The module handle (i.e. address). */
void *pvVMMR0;
/** Address of VMMR0Entry function. */
void *pvVMMR0Entry;
} VMMR0;
} EP;
/** Address. */
void *pvImageBase;
/** Entry point type. */
enum { EP_NOTHING, EP_VMMR0 }
eEPType;
/** The offset of the symbol table. */
uint32_t offSymbols;
/** The number of entries in the symbol table. */
uint32_t cSymbols;
/** The offset of the string table. */
uint32_t offStrTab;
/** Size of the string table. */
uint32_t cbStrTab;
/** Size of image (including string and symbol tables). */
uint32_t cbImage;
/** The image data. */
char achImage[1];
} SUPLDRLOAD_IN, *PSUPLDRLOAD_IN;
/** SUP_IOCTL_LDR_FREE Input. */
typedef struct SUPLDRFREE_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
/** Address. */
void *pvImageBase;
} SUPLDRFREE_IN, *PSUPLDRFREE_IN;
/** SUP_IOCTL_LDR_GET_SYMBOL Input. */
typedef struct SUPLDRGETSYMBOL_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
/** Address. */
void *pvImageBase;
/** The symbol name (variable length). */
char szSymbol[1];
} SUPLDRGETSYMBOL_IN, *PSUPLDRGETSYMBOL_IN;
/** SUP_IOCTL_LDR_GET_SYMBOL Output. */
typedef struct SUPLDRGETSYMBOL_OUT
{
/** The symbol address. */
void *pvSymbol;
} SUPLDRGETSYMBOL_OUT, *PSUPLDRGETSYMBOL_OUT;
/** SUP_IOCTL_CALL_VMMR0 Input. */
typedef struct SUPCALLVMMR0_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
/** The VM handle. */
PVM pVM;
/** Which operation to execute. */
uint32_t uOperation;
/** The size of the buffer pointed to by pvArg. */
uint32_t cbArg;
/** Argument to that operation. */
void *pvArg;
} SUPCALLVMMR0_IN, *PSUPCALLVMMR0_IN;
/** SUP_IOCTL_CALL_VMMR0 Output. */
typedef struct SUPCALLVMMR0_OUT
{
/** The VBox status code for the operation. */
int32_t rc;
} SUPCALLVMMR0_OUT, *PSUPCALLVMMR0_OUT;
/** SUP_IOCTL_GET_PAGING_MODE Input. */
typedef struct SUPGETPAGINGMODE_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
} SUPGETPAGINGMODE_IN, *PSUPGETPAGINGMODE_IN;
/** SUP_IOCTL_GET_PAGING_MODE Output. */
typedef struct SUPGETPAGINGMODE_OUT
{
/** The paging mode. */
SUPPAGINGMODE enmMode;
} SUPGETPAGINGMODE_OUT, *PSUPGETPAGINGMODE_OUT;
/** SUP_IOCTL_LOW_ALLOC Input. */
typedef struct SUPLOWALLOC_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
/** Number of pages to allocate. */
uint32_t cPages;
} SUPLOWALLOC_IN, *PSUPLOWALLOC_IN;
/** SUP_IOCTL_LOW_ALLOC Output. */
typedef struct SUPLOWALLOC_OUT
{
/** The address (virtual & linear) of the allocated memory. */
void *pvVirt;
/** Array of pages. */
SUPPAGE aPages[1];
} SUPLOWALLOC_OUT, *PSUPLOWALLOC_OUT;
/** SUP_IOCTL_LOW_FREE Input. */
typedef struct SUPLOWFREE_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
/** The address (virtual, not physical address) of the memory to free. */
void *pv;
} SUPLOWFREE_IN, *PSUPLOWFREE_IN;
/** SUP_IOCTL_GIP_MAP Input. */
typedef struct SUPGIPMAP_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
} SUPGIPMAP_IN, *PSUPGIPMAP_IN;
/** SUP_IOCTL_GIP_MAP Output. */
typedef struct SUPGIPMAP_OUT
{
/** Pointer to the read-only usermode GIP mapping for this session. */
PCSUPGLOBALINFOPAGE pGipR3;
/** Pointer to the supervisor mode GIP mapping. */
PCSUPGLOBALINFOPAGE pGipR0;
/** The physical address of the GIP. */
RTHCPHYS HCPhysGip;
} SUPGIPMAP_OUT, *PSUPGIPMAP_OUT;
/** SUP_IOCTL_GIP_UNMAP Input. */
typedef struct SUPGIPUNMAP_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
} SUPGIPUNMAP_IN, *PSUPGIPUNMAP_IN;
/** SUP_IOCTL_SET_VM_FOR_FAST Input. */
typedef struct SUPSETVMFORFAST_IN
{
/** Cookie. */
uint32_t u32Cookie;
/** Session cookie. */
uint32_t u32SessionCookie;
/** The ring-0 VM handle (pointer). */
PVMR0 pVMR0;
} SUPSETVMFORFAST_IN, *PSUPSETVMFORFAST_IN;
#pragma pack() /* paranoia */
#endif