VBoxGuest.h@ 97583

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1	/** @file
2	* VBoxGuest - VirtualBox Guest Additions Driver Interface. (ADD,DEV)
3	*
4	* @note This file is used by 16-bit compilers too (OpenWatcom).
5	*/
6
7	/*
8	* Copyright (C) 2006-2022 Oracle and/or its affiliates.
9	*
10	* Permission is hereby granted, free of charge, to any person
11	* obtaining a copy of this software and associated documentation
12	* files (the "Software"), to deal in the Software without
13	* restriction, including without limitation the rights to use,
14	* copy, modify, merge, publish, distribute, sublicense, and/or sell
15	* copies of the Software, and to permit persons to whom the
16	* Software is furnished to do so, subject to the following
17	* conditions:
18	*
19	* The above copyright notice and this permission notice shall be
20	* included in all copies or substantial portions of the Software.
21	*
22	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
24	* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
26	* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
27	* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
28	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
29	* OTHER DEALINGS IN THE SOFTWARE.
30	*/
31
32	#ifndef VBOX_INCLUDED_VBoxGuest_h
33	#define VBOX_INCLUDED_VBoxGuest_h
34	#ifndef RT_WITHOUT_PRAGMA_ONCE
35	# pragma once
36	#endif
37
38	#include <VBox/types.h>
39	#include <iprt/assertcompile.h>
40	#include <VBox/VMMDevCoreTypes.h>
41	#include <VBox/VBoxGuestCoreTypes.h>
42
43
44
45	/** @defgroup grp_vboxguest VirtualBox Guest Additions Device Driver
46	*
47	* Also know as VBoxGuest.
48	*
49	* @{
50	*/
51
52	/** @defgroup grp_vboxguest_ioc VirtualBox Guest Additions Driver Interface
53	*
54	* @note This is considered internal in ring-3, please use the VbglR3 functions.
55	*
56	* - I/O controls for user and/or kernel mode starts at 0.
57	* - IDC specific requests descends from 63.
58	* - Bits 7 and 6 are currently reserved for future hacks.
59	*
60	* @remarks When creating new IOCtl interfaces keep in mind that not all OSes supports
61	* reporting back the output size. (This got messed up a little bit in VBoxDrv.)
62	*
63	* The request size is also a little bit tricky as it's passed as part of the
64	* request code on unix. The size field is 14 bits on Linux, 12 bits on *BSD,
65	* 13 bits Darwin, and 8-bits on Solaris. All the BSDs and Darwin kernels
66	* will make use of the size field, while Linux and Solaris will not. We're of
67	* course using the size to validate and/or map/lock the request, so it has
68	* to be valid.
69	*
70	* For Solaris we will have to do something special though, 255 isn't
71	* sufficient for all we need. A 4KB restriction (BSD) is probably not
72	* too problematic (yet) as a general one.
73	*
74	* More info can be found in SUPDRVIOC.h and related sources.
75	*
76	* @remarks If adding interfaces that only has input or only has output, some new macros
77	* needs to be created so the most efficient IOCtl data buffering method can be
78	* used.
79	*
80	* @{
81	*/
82	#if !defined(IN_RC) && !defined(IN_RING0_AGNOSTIC)
83
84	/** Fictive start address of the hypervisor physical memory for MmMapIoSpace. */
85	#define VBOXGUEST_HYPERVISOR_PHYSICAL_START UINT32_C(0xf8000000)
86
87	#ifdef RT_OS_DARWIN
88	/** Cookie used to fend off some unwanted clients to the IOService. */
89	# define VBOXGUEST_DARWIN_IOSERVICE_COOKIE UINT32_C(0x56426f78) /* 'VBox' */
90	#endif
91
92
93	#if defined(RT_OS_WINDOWS)
94	# ifndef CTL_CODE
95	# include <iprt/win/windows.h>
96	# endif
97	/* Automatic buffering, size not encoded. */
98	# define VBGL_IOCTL_CODE_SIZE(Function, Size) CTL_CODE(FILE_DEVICE_UNKNOWN, 2048 + (Function), METHOD_BUFFERED, FILE_WRITE_ACCESS)
99	# define VBGL_IOCTL_CODE_BIG(Function) CTL_CODE(FILE_DEVICE_UNKNOWN, 2048 + (Function), METHOD_BUFFERED, FILE_WRITE_ACCESS)
100	# define VBGL_IOCTL_CODE_FAST(Function) CTL_CODE(FILE_DEVICE_UNKNOWN, 2048 + (Function), METHOD_NEITHER, FILE_WRITE_ACCESS)
101	# define VBGL_IOCTL_CODE_STRIPPED(a_uIOCtl) (a_uIOCtl)
102	# define VBOXGUEST_DEVICE_NAME "\\\\.\\VBoxGuest"
103	/** The support service name. */
104	# define VBOXGUEST_SERVICE_NAME "VBoxGuest"
105	/** Global name for Win2k+ */
106	# define VBOXGUEST_DEVICE_NAME_GLOBAL "\\\\.\\Global\\VBoxGuest"
107	/** Win32 driver name */
108	# define VBOXGUEST_DEVICE_NAME_NT L"\\Device\\VBoxGuest"
109	/** Device name. */
110	# define VBOXGUEST_DEVICE_NAME_DOS L"\\DosDevices\\VBoxGuest"
111
112	#elif defined(RT_OS_OS2)
113	/* No automatic buffering, size not encoded. */
114	# define VBGL_IOCTL_CATEGORY 0xc2
115	# define VBGL_IOCTL_CODE_SIZE(Function, Size) ((unsigned char)(Function))
116	# define VBGL_IOCTL_CODE_BIG(Function) ((unsigned char)(Function))
117	# define VBGL_IOCTL_CATEGORY_FAST 0xc3 /*< Also defined in VBoxGuestA-os2.asm. /
118	# define VBGL_IOCTL_CODE_FAST(Function) ((unsigned char)(Function))
119	# define VBGL_IOCTL_CODE_STRIPPED(a_uIOCtl) (a_uIOCtl)
120	# define VBOXGUEST_DEVICE_NAME "\\Dev\\VBoxGst$"
121	/** Short device name for AttachDD.
122	* @note Case sensitive. Must match what VBoxGuestA-os2.asm says! */
123	# define VBOXGUEST_DEVICE_NAME_SHORT "vboxgst$"
124
125	#elif defined(RT_OS_SOLARIS)
126	/* No automatic buffering, size limited to 255 bytes => use VBGLBIGREQ for everything. */
127	# include <sys/ioccom.h>
128	# define VBGL_IOCTL_CODE_SIZE(Function, Size) ((uintptr_t)(_IOWRN('V', (Function), sizeof(VBGLREQHDR))))
129	# define VBGL_IOCTL_CODE_BIG(Function) _IOWRN('V', (Function), sizeof(VBGLREQHDR))
130	# define VBGL_IOCTL_CODE_FAST(Function) _IO( 'F', (Function))
131	# define VBGL_IOCTL_CODE_STRIPPED(a_uIOCtl) (a_uIOCtl)
132	# define VBGL_IOCTL_IS_FAST(a_uIOCtl) ( ((a_uIOCtl) & 0x0000ff00) == ('F' << 8) )
133
134	#elif defined(RT_OS_LINUX)
135	/* No automatic buffering, size limited to 16KB. */
136	# include <linux/ioctl.h>
137	# define VBGL_IOCTL_CODE_SIZE(Function, Size) _IOC(_IOC_READ \| _IOC_WRITE, 'V', (Function), (Size))
138	# define VBGL_IOCTL_CODE_BIG(Function) _IO('V', (Function))
139	# define VBGL_IOCTL_CODE_FAST(Function) _IO('F', (Function))
140	# define VBGL_IOCTL_CODE_STRIPPED(a_uIOCtl) _IOC_NR((a_uIOCtl))
141	# define VBOXGUEST_USER_DEVICE_NAME "/dev/vboxuser"
142
143	#elif defined(RT_OS_HAIKU)
144	/* No automatic buffering, size not encoded. */
145	/** @todo do something better */
146	# define VBGL_IOCTL_CODE_SIZE(Function, Size) (0x56420000 \| (Function))
147	# define VBGL_IOCTL_CODE_BIG(Function) (0x56420000 \| (Function))
148	# define VBGL_IOCTL_CODE_FAST(Function) (0x56420000 \| (Function))
149	# define VBGL_IOCTL_CODE_STRIPPED(a_uIOCtl) (a_uIOCtl)
150	# define VBOXGUEST_DEVICE_NAME "/dev/misc/vboxguest"
151
152	#else /* BSD Like */
153	/* Automatic buffering, size limited to 4KB on BSD and 8KB on Darwin - commands the limit, 4KB. /
154	# include <sys/ioccom.h>
155	# define VBGL_IOCTL_CODE_SIZE(Function, Size) _IOC(IOC_INOUT, 'V', (Function), (Size))
156	# define VBGL_IOCTL_CODE_BIG(Function) _IO('V', (Function))
157	# define VBGL_IOCTL_CODE_FAST(Function) _IO('F', (Function))
158	# define VBGL_IOCTL_CODE_STRIPPED(a_uIOCtl) ((a_uIOCtl) & ~(_IOC(0,0,0,IOCPARM_MASK)))
159	# define VBGL_IOCTL_IS_FAST(a_uIOCtl) ( IOCGROUP(a_uIOCtl) == 'F' )
160	# if defined(RT_OS_DARWIN)
161	# define VBOXGUEST_DEVICE_NAME "/dev/vboxguest"
162	# define VBOXGUEST_USER_DEVICE_NAME "/dev/vboxguestu"
163	# endif
164
165	#endif
166
167	/** @todo It would be nice if we could have two defines without paths. */
168
169	/** @def VBOXGUEST_DEVICE_NAME
170	* The support device name. */
171	#ifndef VBOXGUEST_DEVICE_NAME /* PORTME */
172	# define VBOXGUEST_DEVICE_NAME "/dev/vboxguest"
173	#endif
174
175	/** @def VBOXGUEST_USER_DEVICE_NAME
176	* The support device name of the user accessible device node. */
177	#ifndef VBOXGUEST_USER_DEVICE_NAME
178	# define VBOXGUEST_USER_DEVICE_NAME VBOXGUEST_DEVICE_NAME
179	#endif
180
181
182	/**
183	* The VBoxGuest I/O control version.
184	*
185	* As usual, the high word contains the major version and changes to it
186	* signifies incompatible changes.
187	*
188	* The lower word is the minor version number, it is increased when new
189	* functions are added or existing changed in a backwards compatible manner.
190	*/
191	#define VBGL_IOC_VERSION UINT32_C(0x00010000)
192
193
194
195	/** @name VBGL_IOCTL_DRIVER_INFO
196	* Adjust and get driver information.
197	*
198	* @note May switch the session to a backwards compatible interface version if
199	* uClientVersion indicates older client code.
200	*
201	* @{
202	*/
203	#define VBGL_IOCTL_DRIVER_VERSION_INFO VBGL_IOCTL_CODE_SIZE(0, VBGL_IOCTL_DRIVER_VERSION_INFO_SIZE)
204	#define VBGL_IOCTL_DRIVER_VERSION_INFO_SIZE sizeof(VBGLIOCDRIVERVERSIONINFO)
205	#define VBGL_IOCTL_DRIVER_VERSION_INFO_SIZE_IN RT_UOFFSET_AFTER(VBGLIOCDRIVERVERSIONINFO, u.In)
206	#define VBGL_IOCTL_DRIVER_VERSION_INFO_SIZE_OUT sizeof(VBGLIOCDRIVERVERSIONINFO)
207	typedef struct VBGLIOCDRIVERVERSIONINFO
208	{
209	/** The header. */
210	VBGLREQHDR Hdr;
211	union
212	{
213	struct
214	{
215	/** The requested interface version number (VBGL_IOC_VERSION). */
216	uint32_t uReqVersion;
217	/** The minimum interface version number
218	* (typically the major version part of VBGL_IOC_VERSION). */
219	uint32_t uMinVersion;
220	/** Reserved, MBZ. */
221	uint32_t uReserved1;
222	/** Reserved, MBZ. */
223	uint32_t uReserved2;
224	} In;
225	struct
226	{
227	/** Interface version for this session (typically VBGL_IOC_VERSION). */
228	uint32_t uSessionVersion;
229	/** The version of the IDC interface (VBGL_IOC_VERSION). */
230	uint32_t uDriverVersion;
231	/** The SVN revision of the driver.
232	* This will be set to 0 if not compiled into the driver. */
233	uint32_t uDriverRevision;
234	/** Reserved \#1 (will be returned as zero until defined). */
235	uint32_t uReserved1;
236	/** Reserved \#2 (will be returned as zero until defined). */
237	uint32_t uReserved2;
238	} Out;
239	} u;
240	} VBGLIOCDRIVERVERSIONINFO, RT_FAR *PVBGLIOCDRIVERVERSIONINFO;
241	AssertCompileSize(VBGLIOCDRIVERVERSIONINFO, 24 + 20);
242	#if !defined(__GNUC__) /* Some GCC versions can't handle the complicated RT_UOFFSET_AFTER macro, it seems. */ \
243	&& (!defined(RT_OS_OS2) \|\| (!defined(__IBMC__) && !defined(__IBMCPP__) && (!defined(__WATCOMC__) \|\| !defined(__cplusplus))))
244	AssertCompile(VBGL_IOCTL_DRIVER_VERSION_INFO_SIZE_IN == 24 + 16);
245	#endif
246	/** @} */
247
248
249	/** @name VBGL_IOCTL_GET_PORT_INFO
250	* Query VMMDev I/O port region and MMIO mapping address.
251	* @remarks Ring-0 only.
252	* @{
253	*/
254	#define VBGL_IOCTL_GET_VMMDEV_IO_INFO VBGL_IOCTL_CODE_SIZE(1, VBGL_IOCTL_GET_VMMDEV_IO_INFO_SIZE)
255	#define VBGL_IOCTL_GET_VMMDEV_IO_INFO_SIZE sizeof(VBGLIOCGETVMMDEVIOINFO)
256	#define VBGL_IOCTL_GET_VMMDEV_IO_INFO_SIZE_IN sizeof(VBGLREQHDR)
257	#define VBGL_IOCTL_GET_VMMDEV_IO_INFO_SIZE_OUT sizeof(VBGLIOCGETVMMDEVIOINFO)
258	typedef struct VBGLIOCGETVMMDEVIOINFO
259	{
260	/** The header. */
261	VBGLREQHDR Hdr;
262	union
263	{
264	struct
265	{
266	/** The MMIO mapping. NULL if no MMIO region. */
267	struct VMMDevMemory volatile RT_FAR *pvVmmDevMapping;
268	/** The I/O port address. */
269	RTIOPORT IoPort;
270	/** Padding, ignore. */
271	RTIOPORT auPadding[HC_ARCH_BITS == 64 ? 3 : 1];
272	} Out;
273	} u;
274	} VBGLIOCGETVMMDEVIOINFO, RT_FAR *PVBGLIOCGETVMMDEVIOINFO;
275	AssertCompileSize(VBGLIOCGETVMMDEVIOINFO, 24 + (HC_ARCH_BITS == 64 ? 16 : 8));
276	/** @} */
277
278
279	/** @name VBGL_IOCTL_VMMDEV_REQUEST
280	* IOCTL to VBoxGuest to perform a VMM Device request less than 1KB in size.
281	* @{
282	*/
283	#define VBGL_IOCTL_VMMDEV_REQUEST(a_cb) VBGL_IOCTL_CODE_SIZE(2, (a_cb))
284	/** @} */
285
286
287	/** @name VBGL_IOCTL_VMMDEV_REQUEST_BIG
288	* IOCTL to VBoxGuest to perform a VMM Device request that can 1KB or larger.
289	* @{
290	*/
291	#define VBGL_IOCTL_VMMDEV_REQUEST_BIG VBGL_IOCTL_CODE_BIG(3)
292	/** @} */
293
294	#ifdef VBOX_WITH_HGCM
295
296	/** @name VBGL_IOCTL_HGCM_CONNECT
297	* Connect to a HGCM service.
298	* @{ */
299	# define VBGL_IOCTL_HGCM_CONNECT VBGL_IOCTL_CODE_SIZE(4, VBGL_IOCTL_HGCM_CONNECT_SIZE)
300	# define VBGL_IOCTL_HGCM_CONNECT_SIZE sizeof(VBGLIOCHGCMCONNECT)
301	# define VBGL_IOCTL_HGCM_CONNECT_SIZE_IN sizeof(VBGLIOCHGCMCONNECT)
302	# define VBGL_IOCTL_HGCM_CONNECT_SIZE_OUT RT_UOFFSET_AFTER(VBGLIOCHGCMCONNECT, u.Out)
303	typedef struct VBGLIOCHGCMCONNECT
304	{
305	/** The header. */
306	VBGLREQHDR Hdr;
307	union
308	{
309	struct
310	{
311	HGCMServiceLocation Loc;
312	} In;
313	struct
314	{
315	uint32_t idClient;
316	} Out;
317	} u;
318	} VBGLIOCHGCMCONNECT, RT_FAR *PVBGLIOCHGCMCONNECT;
319	AssertCompileSize(VBGLIOCHGCMCONNECT, 24 + 132);
320	#if !defined(__GNUC__) /* Some GCC versions can't handle the complicated RT_UOFFSET_AFTER macro, it seems. */ \
321	&& (!defined(RT_OS_OS2) \|\| (!defined(__IBMC__) && !defined(__IBMCPP__) && (!defined(__WATCOMC__) \|\| !defined(__cplusplus))))
322	AssertCompile(VBGL_IOCTL_HGCM_CONNECT_SIZE_OUT == 24 + 4);
323	#endif
324	/** @} */
325
326
327	/** @name VBGL_IOCTL_HGCM_DISCONNECT
328	* Disconnect from a HGCM service.
329	* @{ */
330	# define VBGL_IOCTL_HGCM_DISCONNECT VBGL_IOCTL_CODE_SIZE(5, VBGL_IOCTL_HGCM_DISCONNECT_SIZE)
331	# define VBGL_IOCTL_HGCM_DISCONNECT_SIZE sizeof(VBGLIOCHGCMDISCONNECT)
332	# define VBGL_IOCTL_HGCM_DISCONNECT_SIZE_IN sizeof(VBGLIOCHGCMDISCONNECT)
333	# define VBGL_IOCTL_HGCM_DISCONNECT_SIZE_OUT sizeof(VBGLREQHDR)
334	/** @note This is also used by a VbglR0 API. */
335	typedef struct VBGLIOCHGCMDISCONNECT
336	{
337	/** The header. */
338	VBGLREQHDR Hdr;
339	union
340	{
341	struct
342	{
343	uint32_t idClient;
344	} In;
345	} u;
346	} VBGLIOCHGCMDISCONNECT, RT_FAR *PVBGLIOCHGCMDISCONNECT;
347	AssertCompileSize(VBGLIOCHGCMDISCONNECT, 24 + 4);
348	/** @} */
349
350
351	/** @name VBGL_IOCTL_HGCM_CALL, VBGL_IOCTL_HGCM_CALL_WITH_USER_DATA
352	*
353	* Make a call to a HGCM service. There are several variations here.
354	*
355	* The VBGL_IOCTL_HGCM_CALL_WITH_USER_DATA variation is for other drivers (like
356	* the graphics ones) passing on requests from user land that contains user
357	* data. These calls are always interruptible.
358	*
359	* @{ */
360	# define VBGL_IOCTL_HGCM_CALL_32(a_cb) VBGL_IOCTL_CODE_SIZE(6, (a_cb))
361	# define VBGL_IOCTL_HGCM_CALL_64(a_cb) VBGL_IOCTL_CODE_SIZE(7, (a_cb))
362	# if ARCH_BITS == 64
363	# define VBGL_IOCTL_HGCM_CALL(a_cb) VBGL_IOCTL_HGCM_CALL_64(a_cb)
364	# else
365	# define VBGL_IOCTL_HGCM_CALL(a_cb) VBGL_IOCTL_HGCM_CALL_32(a_cb)
366	# endif
367	# define VBGL_IOCTL_HGCM_CALL_WITH_USER_DATA(a_cb) VBGL_IOCTL_CODE_SIZE(8, (a_cb))
368	/** @} */
369
370
371	/** @name VBGL_IOCTL_IDC_HGCM_FAST_CALL
372	*
373	* Variant of VBGL_IOCTL_HGCM_CALL for drivers that submits the request as-is to
374	* the host and handles the waiting, the caller does all the rest.
375	*
376	* @note ring-0 only.
377	* @note Size is not encoded in the I/O control code.
378	* @{
379	*/
380	#define VBGL_IOCTL_IDC_HGCM_FAST_CALL VBGL_IOCTL_CODE_SIZE(61, sizeof(VBGLIOCIDCHGCMFASTCALL))
381	#define VBGL_IOCTL_IDC_HGCM_FAST_CALL_SIZE(a_cb) (a_cb)
382	#define VBGL_IOCTL_IDC_HGCM_FAST_CALL_SIZE_IN(a_cb) (a_cb)
383	#define VBGL_IOCTL_IDC_HGCM_FAST_CALL_SIZE_OUT(a_cb) (a_cb)
384	#pragma pack(4) /* Want it to fit nicely with the 44 byte VMMDevHGCMCall and optimally align 64-bit parameters structures. */
385	typedef struct VBGLIOCIDCHGCMFASTCALL
386	{
387	/** The header. */
388	VBGLREQHDR Hdr;
389	/** The physical address of the following VMMDevHGCMCall structure. */
390	RTGCPHYS32 GCPhysReq;
391	/** Set if interruptible. */
392	bool fInterruptible;
393	/** Reserved. */
394	uint8_t abReserved0[3];
395	uint64_t uTimestamp[2];
396	uint8_t abReserved1[4];
397	/* After this structure follows a VMMDevHGCMCall strcuture (44 bytes), then
398	zero or more HGCMFunctionParameter structures (12 or 16 bytes), and finally
399	page lists and embedded buffers. */
400	} VBGLIOCIDCHGCMFASTCALL, RT_FAR *PVBGLIOCIDCHGCMFASTCALL;
401	#pragma pack()
402	AssertCompileSize(VBGLIOCIDCHGCMFASTCALL, /* 24 + 4 + 1 + 3 + 28 + 4 = 0x34 (52) = / 0x34);
403
404	/**
405	* Macro for initializing VBGLIOCIDCHGCMFASTCALL and the following
406	* VMMDevHGCMCall structures.
407	*
408	* @param a_pHdr The request header to initialize.
409	* @param a_HdrPhys The 32-bit physical address corresponding to @a a_pHdr.
410	* @param a_pCall Pointer to the VMMDevHGCMCall structure.
411	* @param a_idClient The HGCM client ID.
412	* @param a_uFunction The HGCM function number.
413	* @param a_cParms The number of parameters following @a a_pCall.
414	* @param a_cbReq The size of the whole request.
415	*/
416	#define VBGLIOCIDCHGCMFASTCALL_INIT(a_pHdr, a_HdrPhys, a_pCall, a_idClient, a_uFunction, a_cParms, a_cbReq) \
417	do { \
418	Assert((uintptr_t)(a_pHdr) + sizeof(VBGLIOCIDCHGCMFASTCALL) == (uintptr_t)(a_pCall)); \
419	VBGLREQHDR_INIT_EX(&(a_pHdr)->Hdr, a_cbReq, a_cbReq); \
420	pReq->Hdr.GCPhysReq = (a_HdrPhys) + sizeof(VBGLIOCIDCHGCMFASTCALL); \
421	pReq->Hdr.fInterruptible = false; \
422	\
423	(a_pCall)->header.header.size = (a_cbReq) - sizeof(VBGLIOCIDCHGCMFASTCALL); \
424	(a_pCall)->header.header.version = VBGLREQHDR_VERSION; \
425	(a_pCall)->header.header.requestType= (ARCH_BITS == 64 ? VMMDevReq_HGCMCall64 : VMMDevReq_HGCMCall32); \
426	(a_pCall)->header.header.rc = VERR_INTERNAL_ERROR; \
427	(a_pCall)->header.header.reserved1 = 0; \
428	(a_pCall)->header.header.fRequestor = VMMDEV_REQUESTOR_KERNEL \| VMMDEV_REQUESTOR_USR_DRV_OTHER \
429	\| VMMDEV_REQUESTOR_CON_DONT_KNOW \| VMMDEV_REQUESTOR_TRUST_NOT_GIVEN; \
430	(a_pCall)->header.fu32Flags = 0; \
431	(a_pCall)->header.result = VERR_INTERNAL_ERROR; \
432	(a_pCall)->u32ClientID = (a_idClient); \
433	(a_pCall)->u32Function = (a_uFunction); \
434	(a_pCall)->cParms = (a_cParms); \
435	} while (0)
436
437
438	/** @} */
439
440	#endif /* VBOX_WITH_HGCM */
441
442
443	/** @name VBGL_IOCTL_LOG
444	* IOCTL to VBoxGuest to perform backdoor logging.
445	* @{ */
446	#define VBOXGUEST_IOCTL_LOG(Size)
447	#define VBGL_IOCTL_LOG(a_cchMsg) VBGL_IOCTL_CODE_BIG(9)
448	#define VBGL_IOCTL_LOG_SIZE(a_cchMsg) (sizeof(VBGLREQHDR) + (a_cchMsg) + 1)
449	#define VBGL_IOCTL_LOG_SIZE_IN(a_cchMsg) (sizeof(VBGLREQHDR) + (a_cchMsg) + 1)
450	#define VBGL_IOCTL_LOG_SIZE_OUT sizeof(VBGLREQHDR)
451	typedef struct VBGLIOCLOG
452	{
453	/** The header. */
454	VBGLREQHDR Hdr;
455	union
456	{
457	struct
458	{
459	/** The log message.
460	* The length is determined from the input size and zero termination. */
461	char szMsg[RT_FLEXIBLE_ARRAY_IN_NESTED_UNION];
462	} In;
463	} u;
464	} VBGLIOCLOG, RT_FAR *PVBGLIOCLOG;
465	/** @} */
466
467
468	/** @name VBGL_IOCTL_WAIT_FOR_EVENTS
469	* Wait for a VMMDev host event notification.
470	* @{
471	*/
472	#define VBGL_IOCTL_WAIT_FOR_EVENTS VBGL_IOCTL_CODE_SIZE(10, VBGL_IOCTL_WAIT_FOR_EVENTS_SIZE)
473	#define VBGL_IOCTL_WAIT_FOR_EVENTS_SIZE sizeof(VBGLIOCWAITFOREVENTS)
474	#define VBGL_IOCTL_WAIT_FOR_EVENTS_SIZE_IN sizeof(VBGLIOCWAITFOREVENTS)
475	#define VBGL_IOCTL_WAIT_FOR_EVENTS_SIZE_OUT RT_UOFFSET_AFTER(VBGLIOCWAITFOREVENTS, u.Out)
476	typedef struct VBGLIOCWAITFOREVENTS
477	{
478	/** The header. */
479	VBGLREQHDR Hdr;
480	union
481	{
482	struct
483	{
484	/** Timeout in milliseconds. */
485	uint32_t cMsTimeOut;
486	/** Events to wait for. */
487	uint32_t fEvents;
488	} In;
489	struct
490	{
491	/** Events that occurred. */
492	uint32_t fEvents;
493	} Out;
494	} u;
495	} VBGLIOCWAITFOREVENTS, RT_FAR *PVBGLIOCWAITFOREVENTS;
496	AssertCompileSize(VBGLIOCWAITFOREVENTS, 24 + 8);
497	/** @} */
498
499
500	/** @name VBGL_IOCTL_INTERRUPT_ALL_WAIT_FOR_EVENTS
501	* IOCTL to VBoxGuest to interrupt (cancel) any pending
502	* VBGL_IOCTL_WAIT_FOR_EVENTS and return.
503	*
504	* Handled inside the guest additions and not seen by the host at all.
505	* After calling this, VBGL_IOCTL_WAIT_FOR_EVENTS should no longer be called in
506	* the same session. At the time of writing this is not enforced; at the time
507	* of reading it may be.
508	* @see VBGL_IOCTL_WAIT_FOR_EVENTS
509	*
510	* @{
511	*/
512	#define VBGL_IOCTL_INTERRUPT_ALL_WAIT_FOR_EVENTS VBGL_IOCTL_CODE_SIZE(11, VBGL_IOCTL_INTERRUPT_ALL_WAIT_FOR_EVENTS_SIZE)
513	#define VBGL_IOCTL_INTERRUPT_ALL_WAIT_FOR_EVENTS_SIZE sizeof(VBGLREQHDR)
514	#define VBGL_IOCTL_INTERRUPT_ALL_WAIT_FOR_EVENTS_SIZE_IN sizeof(VBGLREQHDR)
515	#define VBGL_IOCTL_INTERRUPT_ALL_WAIT_FOR_EVENTS_SIZE_OUT sizeof(VBGLREQHDR)
516	/** @} */
517
518
519	/** @name VBGL_IOCTL_CHANGE_FILTER_MASK
520	* IOCTL to VBoxGuest to control the event filter mask.
521	* @{ */
522	#define VBGL_IOCTL_CHANGE_FILTER_MASK VBGL_IOCTL_CODE_SIZE(12, VBGL_IOCTL_CHANGE_FILTER_MASK_SIZE)
523	#define VBGL_IOCTL_CHANGE_FILTER_MASK_SIZE sizeof(VBGLIOCCHANGEFILTERMASK)
524	#define VBGL_IOCTL_CHANGE_FILTER_MASK_SIZE_IN sizeof(VBGLIOCCHANGEFILTERMASK)
525	#define VBGL_IOCTL_CHANGE_FILTER_MASK_SIZE_OUT sizeof(VBGLREQHDR)
526	typedef struct VBGLIOCCHANGEFILTERMASK
527	{
528	/** The header. */
529	VBGLREQHDR Hdr;
530	union
531	{
532	struct
533	{
534	/** Flags to set. */
535	uint32_t fOrMask;
536	/** Flags to remove. */
537	uint32_t fNotMask;
538	} In;
539	} u;
540	} VBGLIOCCHANGEFILTERMASK, RT_FAR *PVBGLIOCCHANGEFILTERMASK;
541	AssertCompileSize(VBGLIOCCHANGEFILTERMASK, 24 + 8);
542	/** @} */
543
544
545	/** @name VBGL_IOCTL_ACQUIRE_GUEST_CAPABILITIES
546	* IOCTL to for acquiring and releasing guest capabilities.
547	*
548	* This is used for multiple purposes:
549	* 1. By doing @a acquire r3 client application (e.g. VBoxTray) claims it will
550	* use the given session for performing operations like @a seamless or
551	* @a auto-resize, thus, if the application terminates, the driver will
552	* automatically cleanup the caps reported to host, so that host knows guest
553	* does not support them anymore
554	* 2. In a multy-user environment this will not allow r3 applications (like
555	* VBoxTray) running in different user sessions simultaneously to interfere
556	* with each other. An r3 client application (like VBoxTray) is responsible
557	* for Acquiring/Releasing caps properly as needed.
558	*
559	*
560	* VERR_RESOURCE_BUSY is returned if any capabilities in the fOrMask are
561	* currently acquired by some other VBoxGuest session.
562	*
563	* @todo Rename to VBGL_IOCTL_ACQUIRE_GUEST_CAPS
564	* @{
565	*/
566	#define VBGL_IOCTL_ACQUIRE_GUEST_CAPABILITIES VBGL_IOCTL_CODE_SIZE(13, VBGL_IOCTL_ACQUIRE_GUEST_CAPABILITIES_SIZE)
567	#define VBGL_IOCTL_ACQUIRE_GUEST_CAPABILITIES_SIZE sizeof(VBGLIOCACQUIREGUESTCAPS)
568	#define VBGL_IOCTL_ACQUIRE_GUEST_CAPABILITIES_SIZE_IN sizeof(VBGLIOCACQUIREGUESTCAPS)
569	#define VBGL_IOCTL_ACQUIRE_GUEST_CAPABILITIES_SIZE_OUT sizeof(VBGLREQHDR)
570
571	/** Default operation (full acquire/release). */
572	#define VBGL_IOC_AGC_FLAGS_DEFAULT UINT32_C(0x00000000)
573	/** Configures VBoxGuest to use the specified caps in Acquire mode, w/o making
574	* any caps acquisition/release. This is only possible to set acquire mode for
575	* caps, but not clear it, so fNotMask is ignored when this flag is set. */
576	#define VBGL_IOC_AGC_FLAGS_CONFIG_ACQUIRE_MODE UINT32_C(0x00000001)
577	/** Valid flag mask. */
578	#define VBGL_IOC_AGC_FLAGS_VALID_MASK UINT32_C(0x00000001)
579
580	typedef struct VBGLIOCACQUIREGUESTCAPS
581	{
582	/** The header. */
583	VBGLREQHDR Hdr;
584	union
585	{
586	struct
587	{
588	/** Acquire flags (VBGL_IOC_AGC_FLAGS_XXX). */
589	uint32_t fFlags;
590	/** Guest capabilities to acquire (VMMDEV_GUEST_SUPPORTS_XXX). */
591	uint32_t fOrMask;
592	/** Guest capabilities to release (VMMDEV_GUEST_SUPPORTS_XXX). */
593	uint32_t fNotMask;
594	} In;
595	} u;
596	} VBGLIOCACQUIREGUESTCAPS, RT_FAR *PVBGLIOCACQUIREGUESTCAPS;
597	AssertCompileSize(VBGLIOCACQUIREGUESTCAPS, 24 + 12);
598	/** @} */
599
600
601	/** @name VBGL_IOCTL_CHANGE_GUEST_CAPABILITIES
602	* IOCTL to VBoxGuest to set guest capabilities.
603	* @{ */
604	#define VBGL_IOCTL_CHANGE_GUEST_CAPABILITIES VBGL_IOCTL_CODE_SIZE(14, VBGL_IOCTL_CHANGE_GUEST_CAPABILITIES_SIZE)
605	#define VBGL_IOCTL_CHANGE_GUEST_CAPABILITIES_SIZE sizeof(VBGLIOCSETGUESTCAPS)
606	#define VBGL_IOCTL_CHANGE_GUEST_CAPABILITIES_SIZE_IN sizeof(VBGLIOCSETGUESTCAPS)
607	#define VBGL_IOCTL_CHANGE_GUEST_CAPABILITIES_SIZE_OUT sizeof(VBGLIOCSETGUESTCAPS)
608	typedef struct VBGLIOCSETGUESTCAPS
609	{
610	/** The header. */
611	VBGLREQHDR Hdr;
612	union
613	{
614	struct
615	{
616	/** The capabilities to set (VMMDEV_GUEST_SUPPORTS_XXX). */
617	uint32_t fOrMask;
618	/** The capabilities to drop (VMMDEV_GUEST_SUPPORTS_XXX). */
619	uint32_t fNotMask;
620	} In;
621	struct
622	{
623	/** The capabilities held by the session after the call (VMMDEV_GUEST_SUPPORTS_XXX). */
624	uint32_t fSessionCaps;
625	/** The capabilities for all the sessions after the call (VMMDEV_GUEST_SUPPORTS_XXX). */
626	uint32_t fGlobalCaps;
627	} Out;
628	} u;
629	} VBGLIOCSETGUESTCAPS, RT_FAR *PVBGLIOCSETGUESTCAPS;
630	AssertCompileSize(VBGLIOCSETGUESTCAPS, 24 + 8);
631	typedef VBGLIOCSETGUESTCAPS VBoxGuestSetCapabilitiesInfo;
632	/** @} */
633
634
635	/** @name VBGL_IOCTL_SET_MOUSE_STATUS
636	* IOCTL to VBoxGuest to update the mouse status features.
637	* @{ */
638	#define VBGL_IOCTL_SET_MOUSE_STATUS VBGL_IOCTL_CODE_SIZE(15, VBGL_IOCTL_SET_MOUSE_STATUS_SIZE)
639	#define VBGL_IOCTL_SET_MOUSE_STATUS_SIZE sizeof(VBGLIOCSETMOUSESTATUS)
640	#define VBGL_IOCTL_SET_MOUSE_STATUS_SIZE_IN sizeof(VBGLIOCSETMOUSESTATUS)
641	#define VBGL_IOCTL_SET_MOUSE_STATUS_SIZE_OUT sizeof(VBGLREQHDR)
642	typedef struct VBGLIOCSETMOUSESTATUS
643	{
644	/** The header. */
645	VBGLREQHDR Hdr;
646	union
647	{
648	struct
649	{
650	/** Mouse status flags (VMMDEV_MOUSE_XXX). */
651	uint32_t fStatus;
652	} In;
653	} u;
654	} VBGLIOCSETMOUSESTATUS, RT_FAR *PVBGLIOCSETMOUSESTATUS;
655	/** @} */
656
657
658	/** @name VBGL_IOCTL_SET_MOUSE_NOTIFY_CALLBACK
659	*
660	* IOCTL to for setting the mouse driver callback.
661	* @note The callback will be called in interrupt context with the VBoxGuest
662	* device event spinlock held.
663	* @note ring-0 only.
664	*
665	* @{ */
666	#define VBGL_IOCTL_SET_MOUSE_NOTIFY_CALLBACK VBGL_IOCTL_CODE_SIZE(16, VBGL_IOCTL_SET_MOUSE_NOTIFY_CALLBACK_SIZE)
667	#define VBGL_IOCTL_SET_MOUSE_NOTIFY_CALLBACK_SIZE sizeof(VBGLIOCSETMOUSENOTIFYCALLBACK)
668	#define VBGL_IOCTL_SET_MOUSE_NOTIFY_CALLBACK_SIZE_IN sizeof(VBGLIOCSETMOUSENOTIFYCALLBACK)
669	#define VBGL_IOCTL_SET_MOUSE_NOTIFY_CALLBACK_SIZE_OUT sizeof(VBGLREQHDR)
670	typedef struct VBGLIOCSETMOUSENOTIFYCALLBACK
671	{
672	/** The header. */
673	VBGLREQHDR Hdr;
674	union
675	{
676	struct
677	{
678	/** Mouse notification callback function. */
679	PFNVBOXGUESTMOUSENOTIFY pfnNotify;
680	/** The callback argument. */
681	void RT_FAR *pvUser;
682	} In;
683	} u;
684	} VBGLIOCSETMOUSENOTIFYCALLBACK, RT_FAR *PVBGLIOCSETMOUSENOTIFYCALLBACK;
685	/** @} */
686
687
688	/** @name VBGL_IOCTL_CHECK_BALLOON
689	* IOCTL to VBoxGuest to check memory ballooning.
690	*
691	* The guest kernel module / device driver will ask the host for the current size of
692	* the balloon and adjust the size. Or it will set fHandledInR0 = false and R3 is
693	* responsible for allocating memory and calling R0 (VBGL_IOCTL_CHANGE_BALLOON).
694	* @{ */
695	#define VBGL_IOCTL_CHECK_BALLOON VBGL_IOCTL_CODE_SIZE(17, VBGL_IOCTL_CHECK_BALLOON_SIZE)
696	#define VBGL_IOCTL_CHECK_BALLOON_SIZE sizeof(VBGLIOCCHECKBALLOON)
697	#define VBGL_IOCTL_CHECK_BALLOON_SIZE_IN sizeof(VBGLREQHDR)
698	#define VBGL_IOCTL_CHECK_BALLOON_SIZE_OUT sizeof(VBGLIOCCHECKBALLOON)
699	typedef struct VBGLIOCCHECKBALLOON
700	{
701	/** The header. */
702	VBGLREQHDR Hdr;
703	union
704	{
705	struct
706	{
707	/** The size of the balloon in chunks of 1MB. */
708	uint32_t cBalloonChunks;
709	/** false = handled in R0, no further action required.
710	* true = allocate balloon memory in R3. */
711	bool fHandleInR3;
712	/** Explicit padding, please ignore. */
713	bool afPadding[3];
714	} Out;
715	} u;
716	} VBGLIOCCHECKBALLOON, RT_FAR *PVBGLIOCCHECKBALLOON;
717	AssertCompileSize(VBGLIOCCHECKBALLOON, 24 + 8);
718	typedef VBGLIOCCHECKBALLOON VBoxGuestCheckBalloonInfo;
719	/** @} */
720
721
722	/** @name VBGL_IOCTL_CHANGE_BALLOON
723	* IOCTL to VBoxGuest to supply or revoke one chunk for ballooning.
724	*
725	* The guest kernel module / device driver will lock down supplied memory or
726	* unlock reclaimed memory and then forward the physical addresses of the
727	* changed balloon chunk to the host.
728	*
729	* @{ */
730	#define VBGL_IOCTL_CHANGE_BALLOON VBGL_IOCTL_CODE_SIZE(18, VBGL_IOCTL_CHANGE_BALLOON_SIZE)
731	#define VBGL_IOCTL_CHANGE_BALLOON_SIZE sizeof(VBGLIOCCHANGEBALLOON)
732	#define VBGL_IOCTL_CHANGE_BALLOON_SIZE_IN sizeof(VBGLIOCCHANGEBALLOON)
733	#define VBGL_IOCTL_CHANGE_BALLOON_SIZE_OUT sizeof(VBGLREQHDR)
734	typedef struct VBGLIOCCHANGEBALLOON
735	{
736	/** The header. */
737	VBGLREQHDR Hdr;
738	union
739	{
740	struct
741	{
742	/** Address of the chunk (user space address). */
743	RTR3PTR pvChunk;
744	/** Explicit alignment padding, MBZ. */
745	uint8_t abPadding[ARCH_BITS == 64 ? 0 + 7 : 4 + 7];
746	/** true = inflate, false = deflate. */
747	bool fInflate;
748	} In;
749	} u;
750	} VBGLIOCCHANGEBALLOON, RT_FAR *PVBGLIOCCHANGEBALLOON;
751	AssertCompileSize(VBGLIOCCHANGEBALLOON, 24+16);
752	/** @} */
753
754
755	/** @name VBGL_IOCTL_WRITE_CORE_DUMP
756	* IOCTL to VBoxGuest to write guest core.
757	* @{ */
758	#define VBGL_IOCTL_WRITE_CORE_DUMP VBGL_IOCTL_CODE_SIZE(19, VBGL_IOCTL_WRITE_CORE_DUMP_SIZE)
759	#define VBGL_IOCTL_WRITE_CORE_DUMP_SIZE sizeof(VBGLIOCWRITECOREDUMP)
760	#define VBGL_IOCTL_WRITE_CORE_DUMP_SIZE_IN sizeof(VBGLIOCWRITECOREDUMP)
761	#define VBGL_IOCTL_WRITE_CORE_DUMP_SIZE_OUT sizeof(VBGLREQHDR)
762	typedef struct VBGLIOCWRITECOREDUMP
763	{
764	/** The header. */
765	VBGLREQHDR Hdr;
766	union
767	{
768	struct
769	{
770	/** Flags (reserved, MBZ). */
771	uint32_t fFlags;
772	} In;
773	} u;
774	} VBGLIOCWRITECOREDUMP, RT_FAR *PVBGLIOCWRITECOREDUMP;
775	AssertCompileSize(VBGLIOCWRITECOREDUMP, 24 + 4);
776	typedef VBGLIOCWRITECOREDUMP VBoxGuestWriteCoreDump;
777	/** @} */
778
779
780	#ifdef VBOX_WITH_DPC_LATENCY_CHECKER
781	/** @name VBGL_IOCTL_DPC_LATENCY_CHECKER
782	* IOCTL to VBoxGuest to perform DPC latency tests, printing the result in
783	* the release log on the host. Takes no data, returns no data.
784	* @{ */
785	# define VBGL_IOCTL_DPC_LATENCY_CHECKER VBGL_IOCTL_CODE_SIZE(20, VBGL_IOCTL_DPC_LATENCY_CHECKER_SIZE)
786	# define VBGL_IOCTL_DPC_LATENCY_CHECKER_SIZE sizeof(VBGLREQHDR)
787	# define VBGL_IOCTL_DPC_LATENCY_CHECKER_SIZE_IN sizeof(VBGLREQHDR)
788	# define VBGL_IOCTL_DPC_LATENCY_CHECKER_SIZE_OUT sizeof(VBGLREQHDR)
789	/** @} */
790	#endif
791
792
793	#ifdef RT_OS_OS2
794	/**
795	* The data buffer layout for the IDC entry point (AttachDD).
796	*
797	* @remark This is defined in multiple 16-bit headers / sources.
798	* Some places it's called VBGOS2IDC to short things a bit.
799	*/
800	typedef struct VBGLOS2ATTACHDD
801	{
802	/** VBGL_IOC_VERSION. */
803	uint32_t u32Version;
804	/** Opaque session handle. */
805	uint32_t u32Session;
806
807	/**
808	* The 32-bit service entry point.
809	*
810	* @returns VBox status code.
811	* @param u32Session The session handle (PVBOXGUESTSESSION).
812	* @param iFunction The requested function.
813	* @param pReqHdr The input/output data buffer. The caller
814	* ensures that this cannot be swapped out, or that
815	* it's acceptable to take a page in fault in the
816	* current context. If the request doesn't take
817	* input or produces output, apssing NULL is okay.
818	* @param cbReq The size of the data buffer.
819	*/
820	# if ARCH_BITS == 32 \|\| defined(DOXYGEN_RUNNING)
821	DECLCALLBACKMEMBER(int, pfnServiceEP,(uint32_t u32Session, unsigned iFunction, PVBGLREQHDR pReqHdr, size_t cbReq));
822	# else
823	uint32_t pfnServiceEP;
824	#endif
825
826	/** The 16-bit service entry point for C code (cdecl).
827	*
828	* It's the same as the 32-bit entry point, but the types has
829	* changed to 16-bit equivalents.
830	*
831	* @code
832	* int far cdecl
833	* VBoxGuestOs2IDCService16(uint32_t u32Session, uint16_t iFunction,
834	* PVBGLREQHDR fpvData, uint16_t cbData);
835	* @endcode
836	*/
837	# if ARCH_BITS == 16 \|\| defined(DOXYGEN_RUNNING)
838	DECLCALLBACKMEMBER(int, fpfnServiceEP,(uint32_t u32Session, uint16_t iFunction, PVBGLREQHDR fpvData, uint16_t cbData));
839	# else
840	RTFAR16 fpfnServiceEP;
841	# endif
842
843	/** The 16-bit service entry point for Assembly code (register).
844	*
845	* This is just a wrapper around fpfnServiceEP to simplify calls
846	* from 16-bit assembly code.
847	*
848	* @returns (e)ax: VBox status code; cx: The amount of data returned.
849	*
850	* @param u32Session eax - The above session handle.
851	* @param iFunction dl - The requested function.
852	* @param pvData es:bx - The input/output data buffer.
853	* @param cbData cx - The size of the data buffer.
854	*/
855	RTFAR16 fpfnServiceAsmEP;
856	} VBGLOS2ATTACHDD;
857	/** Pointer to VBOXGUESTOS2IDCCONNECT buffer. */
858	typedef VBGLOS2ATTACHDD RT_FAR *PVBGLOS2ATTACHDD;
859
860	/**
861	* Prototype for the 16-bit callback returned by AttachDD on OS/2.
862	* @param pAttachInfo Pointer to structure to fill in.
863	*/
864	# if defined(__IBMC__) \|\| defined(__IBMCPP__)
865	typedef void (* __cdecl RT_FAR_CODE PFNVBGLOS2ATTACHDD)(PVBGLOS2ATTACHDD pAttachInfo);
866	# else
867	typedef void (__cdecl RT_FAR_CODE *PFNVBGLOS2ATTACHDD)(PVBGLOS2ATTACHDD pAttachInfo);
868	# endif
869	#endif /* RT_OS_OS2 */
870
871
872	/** @name VBGL_IOCL_IDC_CONNECT
873	* IDC client connect request.
874	*
875	* On platforms other than Windows and OS/2, this will also create a kernel
876	* session for the caller.
877	*
878	* @note ring-0 only.
879	* @{
880	*/
881	#define VBGL_IOCTL_IDC_CONNECT VBGL_IOCTL_CODE_SIZE(63, VBGL_IOCTL_IDC_CONNECT_SIZE)
882	#define VBGL_IOCTL_IDC_CONNECT_SIZE sizeof(VBGLIOCIDCCONNECT)
883	#define VBGL_IOCTL_IDC_CONNECT_SIZE_IN RT_UOFFSET_AFTER(VBGLIOCIDCCONNECT, u.In)
884	#define VBGL_IOCTL_IDC_CONNECT_SIZE_OUT sizeof(VBGLIOCIDCCONNECT)
885	typedef struct VBGLIOCIDCCONNECT
886	{
887	/** The header. */
888	VBGLREQHDR Hdr;
889	/** The payload union. */
890	union
891	{
892	struct
893	{
894	/** VBGL_IOCTL_IDC_CONNECT_MAGIC_COOKIE. */
895	uint32_t u32MagicCookie;
896	/** The desired version of the I/O control interface (VBGL_IOC_VERSION). */
897	uint32_t uReqVersion;
898	/** The minimum version of the I/O control interface (VBGL_IOC_VERSION). */
899	uint32_t uMinVersion;
900	/** Reserved, MBZ. */
901	uint32_t uReserved;
902	} In;
903	struct
904	{
905	/** The session handle (opaque). */
906	#if ARCH_BITS >= 32
907	void RT_FAR *pvSession;
908	#else
909	uint32_t pvSession;
910	#endif
911	/** The version of the I/O control interface for this session
912	* (typically VBGL_IOC_VERSION). */
913	uint32_t uSessionVersion;
914	/** The I/O control interface version for of the driver (VBGL_IOC_VERSION). */
915	uint32_t uDriverVersion;
916	/** The SVN revision of the driver.
917	* This will be set to 0 if not compiled into the driver. */
918	uint32_t uDriverRevision;
919	/** Reserved \#1 (will be returned as zero until defined). */
920	uint32_t uReserved1;
921	/** Reserved \#2 (will be returned as NULL until defined). */
922	void RT_FAR *pvReserved2;
923	} Out;
924	} u;
925	} VBGLIOCIDCCONNECT, RT_FAR *PVBGLIOCIDCCONNECT;
926	AssertCompileSize(VBGLIOCIDCCONNECT, 24 + 16 + (ARCH_BITS == 64 ? 8 : 4) * 2);
927	#if !defined(__GNUC__) /* Some GCC versions can't handle the complicated RT_UOFFSET_AFTER macro, it seems. */ \
928	&& (!defined(RT_OS_OS2) \|\| (!defined(__IBMC__) && !defined(__IBMCPP__) && (!defined(__WATCOMC__) \|\| !defined(__cplusplus))))
929	AssertCompile(VBGL_IOCTL_IDC_CONNECT_SIZE_IN == 24 + 16);
930	#endif
931	#define VBGL_IOCTL_IDC_CONNECT_MAGIC_COOKIE UINT32_C(0x55aa4d5a) /*< Magic value for doing an IDC connect. /
932	/** @} */
933
934
935	/** @name VBGL_IOCL_IDC_DISCONNECT
936	* IDC client disconnect request.
937	*
938	* This will destroy the kernel session associated with the IDC connection.
939	*
940	* @note ring-0 only.
941	* @{
942	*/
943	#define VBGL_IOCTL_IDC_DISCONNECT VBGL_IOCTL_CODE_SIZE(62, VBGL_IOCTL_IDC_DISCONNECT_SIZE)
944	#define VBGL_IOCTL_IDC_DISCONNECT_SIZE sizeof(VBGLIOCIDCDISCONNECT)
945	#define VBGL_IOCTL_IDC_DISCONNECT_SIZE_IN sizeof(VBGLIOCIDCDISCONNECT)
946	#define VBGL_IOCTL_IDC_DISCONNECT_SIZE_OUT sizeof(VBGLREQHDR)
947	typedef struct VBGLIOCIDCDISCONNECT
948	{
949	/** The header. */
950	VBGLREQHDR Hdr;
951	union
952	{
953	struct
954	{
955	/** The session handle for platforms where this is needed. */
956	#if ARCH_BITS >= 32
957	void RT_FAR *pvSession;
958	#else
959	uint32_t pvSession;
960	#endif
961	} In;
962	} u;
963	} VBGLIOCIDCDISCONNECT, RT_FAR *PVBGLIOCIDCDISCONNECT;
964	AssertCompileSize(VBGLIOCIDCDISCONNECT, 24 + (ARCH_BITS == 64 ? 8 : 4));
965	/** @} */
966
967
968	#if !defined(RT_OS_WINDOWS) && !defined(RT_OS_OS2)
969	RT_C_DECLS_BEGIN
970	/**
971	* The VBoxGuest IDC entry point.
972	*
973	* @returns VBox status code.
974	* @param pvSession The session.
975	* @param uReq The request code.
976	* @param pReqHdr The request.
977	* @param cbReq The request size.
978	*/
979	int VBOXCALL VBoxGuestIDC(void RT_FAR *pvSession, uintptr_t uReq, PVBGLREQHDR pReqHdr, size_t cbReq);
980	RT_C_DECLS_END
981	#endif
982
983
984	#if defined(RT_OS_LINUX) \|\| defined(RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD)
985
986	/* Private IOCtls between user space and the kernel video driver. DRM private
987	* IOCtls always have the type 'd' and a number between 0x40 and 0x99 (0x9F?) */
988
989	# define VBOX_DRM_IOCTL(a) (0x40 + DRM_VBOX_ ## a)
990
991	/** Stop using HGSMI in the kernel driver until it is re-enabled, so that a
992	* user-space driver can use it. It must be re-enabled before the kernel
993	* driver can be used again in a sensible way. */
994	/** @note These IOCtls was removed from the code, but are left here as
995	* templates as we may need similar ones in future. */
996	# define DRM_VBOX_DISABLE_HGSMI 0
997	# define DRM_IOCTL_VBOX_DISABLE_HGSMI VBOX_DRM_IOCTL(DISABLE_HGSMI)
998	# define VBOXVIDEO_IOCTL_DISABLE_HGSMI _IO('d', DRM_IOCTL_VBOX_DISABLE_HGSMI)
999	/** Enable HGSMI in the kernel driver after it was previously disabled. */
1000	# define DRM_VBOX_ENABLE_HGSMI 1
1001	# define DRM_IOCTL_VBOX_ENABLE_HGSMI VBOX_DRM_IOCTL(ENABLE_HGSMI)
1002	# define VBOXVIDEO_IOCTL_ENABLE_HGSMI _IO('d', DRM_IOCTL_VBOX_ENABLE_HGSMI)
1003
1004	#endif /* RT_OS_LINUX \|\| RT_OS_SOLARIS \|\| RT_OS_FREEBSD */
1005
1006	#endif /* !defined(IN_RC) && !defined(IN_RING0_AGNOSTIC) && !defined(IPRT_NO_CRT) */
1007
1008	/** @} */
1009
1010	/** @} */
1011	#endif /* !VBOX_INCLUDED_VBoxGuest_h */
1012

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source: vbox/trunk/include/VBox/VBoxGuest.h@ 97583

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