ReactOS  0.4.15-dev-499-g1f31905
xboxvmp.c
Go to the documentation of this file.
1 /*
2  * PROJECT: ReactOS Xbox miniport video driver
3  * LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
4  * PURPOSE: Simple framebuffer driver for NVIDIA NV2A XGPU
5  * COPYRIGHT: Copyright 2004 Gé van Geldorp
6  * Copyright 2004 Filip Navara
7  * Copyright 2019-2020 Stanislav Motylkov (x86corez@gmail.com)
8  *
9  * TODO:
10  * - Check input parameters everywhere.
11  * - Call VideoPortVerifyAccessRanges to reserve the memory we're about
12  * to map.
13  */
14 
15 /* INCLUDES *******************************************************************/
16 
17 #include "xboxvmp.h"
18 
19 #include <debug.h>
20 #include <dpfilter.h>
21 
22 /* PUBLIC AND PRIVATE FUNCTIONS ***********************************************/
23 
24 ULONG
25 NTAPI
29 {
31 
32  VideoPortZeroMemory(&InitData, sizeof(InitData));
33  InitData.AdapterInterfaceType = PCIBus;
37  InitData.HwStartIO = XboxVmpStartIO;
38  InitData.HwResetHw = XboxVmpResetHw;
42 
43  return VideoPortInitialize(Context1, Context2, &InitData, NULL);
44 }
45 
46 /*
47  * XboxVmpFindAdapter
48  *
49  * Detects the Xbox Nvidia display adapter.
50  */
51 
53 NTAPI
55  IN PVOID HwDeviceExtension,
57  IN PWSTR ArgumentString,
58  IN OUT PVIDEO_PORT_CONFIG_INFO ConfigInfo,
59  OUT PUCHAR Again)
60 {
61  PXBOXVMP_DEVICE_EXTENSION XboxVmpDeviceExtension;
62  VIDEO_ACCESS_RANGE AccessRanges[3];
64  USHORT VendorId = 0x10DE; /* NVIDIA Corporation */
65  USHORT DeviceId = 0x02A0; /* NV2A XGPU */
66 
67  TRACE_(IHVVIDEO, "XboxVmpFindAdapter\n");
68 
69  XboxVmpDeviceExtension = (PXBOXVMP_DEVICE_EXTENSION)HwDeviceExtension;
70 
71  Status = VideoPortGetAccessRanges(HwDeviceExtension, 0, NULL, 3, AccessRanges,
72  &VendorId, &DeviceId, NULL);
73 
74  if (Status == NO_ERROR)
75  {
76  XboxVmpDeviceExtension->PhysControlStart = AccessRanges[0].RangeStart;
77  XboxVmpDeviceExtension->ControlLength = AccessRanges[0].RangeLength;
78  XboxVmpDeviceExtension->PhysFrameBufferStart = AccessRanges[1].RangeStart;
79  }
80 
81  return Status;
82 }
83 
84 /*
85  * XboxVmpInitialize
86  *
87  * Performs the first initialization of the adapter, after the HAL has given
88  * up control of the video hardware to the video port driver.
89  */
90 
91 BOOLEAN
92 NTAPI
94  PVOID HwDeviceExtension)
95 {
96  PXBOXVMP_DEVICE_EXTENSION XboxVmpDeviceExtension;
97  ULONG inIoSpace = VIDEO_MEMORY_SPACE_MEMORY;
98  ULONG Length;
99 
100  TRACE_(IHVVIDEO, "XboxVmpInitialize\n");
101 
102  XboxVmpDeviceExtension = (PXBOXVMP_DEVICE_EXTENSION)HwDeviceExtension;
103 
104  Length = XboxVmpDeviceExtension->ControlLength;
105  XboxVmpDeviceExtension->VirtControlStart = NULL;
106 
107  if (VideoPortMapMemory(HwDeviceExtension,
108  XboxVmpDeviceExtension->PhysControlStart,
109  &Length,
110  &inIoSpace,
111  &XboxVmpDeviceExtension->VirtControlStart) != NO_ERROR)
112  {
113  ERR_(IHVVIDEO, "Failed to map control memory\n");
114  return FALSE;
115  }
116 
117  INFO_(IHVVIDEO, "Mapped 0x%x bytes of control mem at 0x%x to virt addr 0x%x\n",
118  XboxVmpDeviceExtension->ControlLength,
119  XboxVmpDeviceExtension->PhysControlStart.u.LowPart,
120  XboxVmpDeviceExtension->VirtControlStart);
121 
122  return TRUE;
123 }
124 
125 /*
126  * XboxVmpStartIO
127  *
128  * Processes the specified Video Request Packet.
129  */
130 
131 BOOLEAN
132 NTAPI
134  PVOID HwDeviceExtension,
135  PVIDEO_REQUEST_PACKET RequestPacket)
136 {
137  BOOLEAN Result;
138 
139  RequestPacket->StatusBlock->Status = ERROR_INVALID_PARAMETER;
140 
141  switch (RequestPacket->IoControlCode)
142  {
144  {
145  TRACE_(IHVVIDEO, "XboxVmpStartIO IOCTL_VIDEO_SET_CURRENT_MODE\n");
146 
147  if (RequestPacket->InputBufferLength < sizeof(VIDEO_MODE))
148  {
149  RequestPacket->StatusBlock->Status = ERROR_INSUFFICIENT_BUFFER;
150  return TRUE;
151  }
152 
154  (PXBOXVMP_DEVICE_EXTENSION)HwDeviceExtension,
155  (PVIDEO_MODE)RequestPacket->InputBuffer,
156  RequestPacket->StatusBlock);
157  break;
158  }
159 
161  {
162  TRACE_(IHVVIDEO, "XboxVmpStartIO IOCTL_VIDEO_RESET_DEVICE\n");
163 
165  (PXBOXVMP_DEVICE_EXTENSION)HwDeviceExtension,
166  RequestPacket->StatusBlock);
167  break;
168  }
169 
171  {
172  TRACE_(IHVVIDEO, "XboxVmpStartIO IOCTL_VIDEO_MAP_VIDEO_MEMORY\n");
173 
174  if (RequestPacket->OutputBufferLength < sizeof(VIDEO_MEMORY_INFORMATION) ||
175  RequestPacket->InputBufferLength < sizeof(VIDEO_MEMORY))
176  {
177  RequestPacket->StatusBlock->Status = ERROR_INSUFFICIENT_BUFFER;
178  return TRUE;
179  }
180 
182  (PXBOXVMP_DEVICE_EXTENSION)HwDeviceExtension,
183  (PVIDEO_MEMORY)RequestPacket->InputBuffer,
184  (PVIDEO_MEMORY_INFORMATION)RequestPacket->OutputBuffer,
185  RequestPacket->StatusBlock);
186  break;
187  }
188 
190  {
191  TRACE_(IHVVIDEO, "XboxVmpStartIO IOCTL_VIDEO_UNMAP_VIDEO_MEMORY\n");
192 
193  if (RequestPacket->InputBufferLength < sizeof(VIDEO_MEMORY))
194  {
195  RequestPacket->StatusBlock->Status = ERROR_INSUFFICIENT_BUFFER;
196  return TRUE;
197  }
198 
200  (PXBOXVMP_DEVICE_EXTENSION)HwDeviceExtension,
201  (PVIDEO_MEMORY)RequestPacket->InputBuffer,
202  RequestPacket->StatusBlock);
203  break;
204  }
205 
207  {
208  TRACE_(IHVVIDEO, "XboxVmpStartIO IOCTL_VIDEO_QUERY_NUM_AVAIL_MODES\n");
209 
210  if (RequestPacket->OutputBufferLength < sizeof(VIDEO_NUM_MODES))
211  {
212  RequestPacket->StatusBlock->Status = ERROR_INSUFFICIENT_BUFFER;
213  return TRUE;
214  }
215 
217  (PXBOXVMP_DEVICE_EXTENSION)HwDeviceExtension,
218  (PVIDEO_NUM_MODES)RequestPacket->OutputBuffer,
219  RequestPacket->StatusBlock);
220  break;
221  }
222 
224  {
225  TRACE_(IHVVIDEO, "XboxVmpStartIO IOCTL_VIDEO_QUERY_AVAIL_MODES\n");
226 
227  if (RequestPacket->OutputBufferLength < sizeof(VIDEO_MODE_INFORMATION))
228  {
229  RequestPacket->StatusBlock->Status = ERROR_INSUFFICIENT_BUFFER;
230  return TRUE;
231  }
232 
234  (PXBOXVMP_DEVICE_EXTENSION)HwDeviceExtension,
235  (PVIDEO_MODE_INFORMATION)RequestPacket->OutputBuffer,
236  RequestPacket->StatusBlock);
237  break;
238  }
239 
241  {
242  TRACE_(IHVVIDEO, "XboxVmpStartIO IOCTL_VIDEO_QUERY_CURRENT_MODE\n");
243 
244  if (RequestPacket->OutputBufferLength < sizeof(VIDEO_MODE_INFORMATION))
245  {
246  RequestPacket->StatusBlock->Status = ERROR_INSUFFICIENT_BUFFER;
247  return TRUE;
248  }
249 
251  (PXBOXVMP_DEVICE_EXTENSION)HwDeviceExtension,
252  (PVIDEO_MODE_INFORMATION)RequestPacket->OutputBuffer,
253  RequestPacket->StatusBlock);
254  break;
255  }
256 
257  default:
258  {
259  WARN_(IHVVIDEO, "XboxVmpStartIO 0x%x not implemented\n", RequestPacket->IoControlCode);
260 
261  RequestPacket->StatusBlock->Status = ERROR_INVALID_FUNCTION;
262  return FALSE;
263  }
264  }
265 
266  if (Result)
267  {
268  RequestPacket->StatusBlock->Status = NO_ERROR;
269  }
270 
271  return TRUE;
272 }
273 
274 /*
275  * XboxVmpResetHw
276  *
277  * This function is called to reset the hardware to a known state.
278  */
279 
280 BOOLEAN
281 NTAPI
283  PVOID DeviceExtension,
284  ULONG Columns,
285  ULONG Rows)
286 {
287  TRACE_(IHVVIDEO, "XboxVmpResetHw\n");
288 
289  if (!XboxVmpResetDevice((PXBOXVMP_DEVICE_EXTENSION)DeviceExtension, NULL))
290  {
291  return FALSE;
292  }
293 
294  return TRUE;
295 }
296 
297 /*
298  * XboxVmpGetPowerState
299  *
300  * Queries whether the device can support the requested power state.
301  */
302 
303 VP_STATUS
304 NTAPI
306  PVOID HwDeviceExtension,
307  ULONG HwId,
308  PVIDEO_POWER_MANAGEMENT VideoPowerControl)
309 {
310  ERR_(IHVVIDEO, "XboxVmpGetPowerState is not supported\n");
311 
312  return ERROR_INVALID_FUNCTION;
313 }
314 
315 /*
316  * XboxVmpSetPowerState
317  *
318  * Sets the power state of the specified device
319  */
320 
321 VP_STATUS
322 NTAPI
324  PVOID HwDeviceExtension,
325  ULONG HwId,
326  PVIDEO_POWER_MANAGEMENT VideoPowerControl)
327 {
328  ERR_(IHVVIDEO, "XboxVmpSetPowerState not supported\n");
329 
330  return ERROR_INVALID_FUNCTION;
331 }
332 
333 /*
334  * VBESetCurrentMode
335  *
336  * Sets the adapter to the specified operating mode.
337  */
338 
339 BOOLEAN
340 FASTCALL
342  PXBOXVMP_DEVICE_EXTENSION DeviceExtension,
343  PVIDEO_MODE RequestedMode,
344  PSTATUS_BLOCK StatusBlock)
345 {
346  if (RequestedMode->RequestedMode != 0)
347  {
348  return FALSE;
349  }
350 
351  /* Nothing to do, really. We only support a single mode and we're already
352  * in that mode
353  */
354  return TRUE;
355 }
356 
357 /*
358  * XboxVmpResetDevice
359  *
360  * Resets the video hardware to the default mode, to which it was initialized
361  * at system boot.
362  */
363 
364 BOOLEAN
365 FASTCALL
367  PXBOXVMP_DEVICE_EXTENSION DeviceExtension,
368  PSTATUS_BLOCK StatusBlock)
369 {
370  /* There is nothing to be done here */
371 
372  return TRUE;
373 }
374 
375 /*
376  * XboxVmpMapVideoMemory
377  *
378  * Maps the video hardware frame buffer and video RAM into the virtual address
379  * space of the requestor.
380  */
381 
382 BOOLEAN
383 FASTCALL
385  PXBOXVMP_DEVICE_EXTENSION DeviceExtension,
386  PVIDEO_MEMORY RequestedAddress,
387  PVIDEO_MEMORY_INFORMATION MapInformation,
388  PSTATUS_BLOCK StatusBlock)
389 {
391  ULONG inIoSpace = VIDEO_MEMORY_SPACE_MEMORY;
392 
393  StatusBlock->Information = sizeof(VIDEO_MEMORY_INFORMATION);
394 
395  /* Reuse framebuffer that was set up by firmware */
397  /* Framebuffer address offset value is coming from the GPU within
398  * memory mapped I/O address space, so we're comparing only low
399  * 28 bits of the address within actual RAM address space */
400  FrameBuffer.QuadPart &= 0x0FFFFFFF;
401  if (FrameBuffer.QuadPart != 0x3C00000 && FrameBuffer.QuadPart != 0x7C00000)
402  {
403  /* Check framebuffer address (high 4 MB of either 64 or 128 MB RAM) */
404  WARN_(IHVVIDEO, "Non-standard framebuffer address 0x%p\n", FrameBuffer.QuadPart);
405  }
406  /* Verify that framebuffer address is page-aligned */
407  ASSERT(FrameBuffer.QuadPart % PAGE_SIZE == 0);
408 
409  /* Return the address back to GPU memory mapped I/O */
410  FrameBuffer.QuadPart += DeviceExtension->PhysFrameBufferStart.QuadPart;
411  MapInformation->VideoRamBase = RequestedAddress->RequestedVirtualAddress;
412  /* FIXME: obtain fb size from firmware somehow (Cromwell reserves high 4 MB of RAM) */
413  MapInformation->VideoRamLength = NV2A_VIDEO_MEMORY_SIZE;
414 
416  DeviceExtension,
417  FrameBuffer,
418  &MapInformation->VideoRamLength,
419  &inIoSpace,
420  &MapInformation->VideoRamBase);
421 
422  MapInformation->FrameBufferBase = MapInformation->VideoRamBase;
423  MapInformation->FrameBufferLength = MapInformation->VideoRamLength;
424 
425  /* Tell the nVidia controller about the framebuffer */
427 
428  INFO_(IHVVIDEO, "Mapped 0x%x bytes of phys mem at 0x%lx to virt addr 0x%p\n",
429  MapInformation->VideoRamLength, FrameBuffer.u.LowPart, MapInformation->VideoRamBase);
430 
431  return TRUE;
432 }
433 
434 /*
435  * VBEUnmapVideoMemory
436  *
437  * Releases a mapping between the virtual address space and the adapter's
438  * frame buffer and video RAM.
439  */
440 
441 BOOLEAN
442 FASTCALL
444  PXBOXVMP_DEVICE_EXTENSION DeviceExtension,
445  PVIDEO_MEMORY VideoMemory,
446  PSTATUS_BLOCK StatusBlock)
447 {
449  DeviceExtension,
450  VideoMemory->RequestedVirtualAddress,
451  NULL);
452 
453  return TRUE;
454 }
455 
456 /*
457  * XboxVmpQueryNumAvailModes
458  *
459  * Returns the number of video modes supported by the adapter and the size
460  * in bytes of the video mode information, which can be used to allocate a
461  * buffer for an IOCTL_VIDEO_QUERY_AVAIL_MODES request.
462  */
463 
464 BOOLEAN
465 FASTCALL
467  PXBOXVMP_DEVICE_EXTENSION DeviceExtension,
469  PSTATUS_BLOCK StatusBlock)
470 {
471  Modes->NumModes = 1;
472  Modes->ModeInformationLength = sizeof(VIDEO_MODE_INFORMATION);
473  StatusBlock->Information = sizeof(VIDEO_NUM_MODES);
474  return TRUE;
475 }
476 
477 /*
478  * XboxVmpQueryAvailModes
479  *
480  * Returns information about each video mode supported by the adapter.
481  */
482 
483 BOOLEAN
484 FASTCALL
486  PXBOXVMP_DEVICE_EXTENSION DeviceExtension,
488  PSTATUS_BLOCK StatusBlock)
489 {
490  return XboxVmpQueryCurrentMode(DeviceExtension, VideoMode, StatusBlock);
491 }
492 
493 UCHAR
495  PXBOXVMP_DEVICE_EXTENSION DeviceExtension,
496  UCHAR Index)
497 {
500 }
501 
502 UCHAR
504  PXBOXVMP_DEVICE_EXTENSION DeviceExtension,
506 {
508 
509  /* Get BPP directly from NV2A CRTC (magic constants are from Cromwell) */
510  BytesPerPixel = 8 * (((NvGetCrtc(DeviceExtension, 0x19) & 0xE0) << 3) | (NvGetCrtc(DeviceExtension, 0x13) & 0xFF)) / ScreenWidth;
511 
512  if (BytesPerPixel == 4)
513  {
514  ASSERT((NvGetCrtc(DeviceExtension, 0x28) & 0xF) == BytesPerPixel - 1);
515  }
516  else
517  {
518  ASSERT((NvGetCrtc(DeviceExtension, 0x28) & 0xF) == BytesPerPixel);
519  }
520 
521  return BytesPerPixel;
522 }
523 
524 /*
525  * VBEQueryCurrentMode
526  *
527  * Returns information about current video mode.
528  */
529 
530 BOOLEAN
531 FASTCALL
533  PXBOXVMP_DEVICE_EXTENSION DeviceExtension,
535  PSTATUS_BLOCK StatusBlock)
536 {
538 
539  VideoMode->Length = sizeof(VIDEO_MODE_INFORMATION);
540  VideoMode->ModeIndex = 0;
541 
542  VideoMode->VisScreenWidth = READ_REGISTER_ULONG((ULONG_PTR)DeviceExtension->VirtControlStart + NV2A_RAMDAC_FP_HVALID_END) + 1;
543  VideoMode->VisScreenHeight = READ_REGISTER_ULONG((ULONG_PTR)DeviceExtension->VirtControlStart + NV2A_RAMDAC_FP_VVALID_END) + 1;
544 
545  if (VideoMode->VisScreenWidth <= 1 || VideoMode->VisScreenHeight <= 1)
546  {
547  ERR_(IHVVIDEO, "Cannot obtain current screen resolution!\n");
548  return FALSE;
549  }
550 
551  BytesPerPixel = NvGetBytesPerPixel(DeviceExtension, VideoMode->VisScreenWidth);
552  ASSERT(BytesPerPixel >= 1 && BytesPerPixel <= 4);
553 
554  VideoMode->ScreenStride = VideoMode->VisScreenWidth * BytesPerPixel;
555  VideoMode->NumberOfPlanes = 1;
556  VideoMode->BitsPerPlane = BytesPerPixel * 8;
557  VideoMode->Frequency = 1;
558  VideoMode->XMillimeter = 0; /* FIXME */
559  VideoMode->YMillimeter = 0; /* FIXME */
560  if (BytesPerPixel >= 3)
561  {
562  VideoMode->NumberRedBits = 8;
563  VideoMode->NumberGreenBits = 8;
564  VideoMode->NumberBlueBits = 8;
565  VideoMode->RedMask = 0xFF0000;
566  VideoMode->GreenMask = 0x00FF00;
567  VideoMode->BlueMask = 0x0000FF;
568  }
569  else
570  {
571  /* FIXME: not implemented */
572  WARN_(IHVVIDEO, "BytesPerPixel %d - not implemented\n", BytesPerPixel);
573  }
574  VideoMode->VideoMemoryBitmapWidth = VideoMode->VisScreenWidth;
575  VideoMode->VideoMemoryBitmapHeight = VideoMode->VisScreenHeight;
576  VideoMode->AttributeFlags = VIDEO_MODE_GRAPHICS | VIDEO_MODE_COLOR |
578  VideoMode->DriverSpecificAttributeFlags = 0;
579 
580  StatusBlock->Information = sizeof(VIDEO_MODE_INFORMATION);
581 
582  /* Verify that screen fits framebuffer size */
583  if (VideoMode->VisScreenWidth * VideoMode->VisScreenHeight * (VideoMode->BitsPerPlane / 8) > NV2A_VIDEO_MEMORY_SIZE)
584  {
585  ERR_(IHVVIDEO, "Current screen resolution exceeds video memory bounds!\n");
586  return FALSE;
587  }
588 
589  return TRUE;
590 }
591 
592 /* EOF */
#define ERROR_INVALID_PARAMETER
Definition: compat.h:91
#define IN
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NTKERNELAPI VOID NTAPI WRITE_REGISTER_ULONG(IN PULONG Register, IN ULONG Value)
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struct _VIDEO_NUM_MODES VIDEO_NUM_MODES
BOOLEAN FASTCALL XboxVmpQueryCurrentMode(PXBOXVMP_DEVICE_EXTENSION DeviceExtension, PVIDEO_MODE_INFORMATION VideoMode, PSTATUS_BLOCK StatusBlock)
Definition: xboxvmp.c:532
BOOLEAN NTAPI XboxVmpStartIO(PVOID HwDeviceExtension, PVIDEO_REQUEST_PACKET RequestPacket)
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Definition: xboxvmp.c:54
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unsigned char BOOLEAN
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_In_ ULONG Rows
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VPAPI VP_STATUS NTAPI VideoPortMapMemory(IN PVOID HwDeviceExtension, IN PHYSICAL_ADDRESS PhysicalAddress, IN OUT PULONG Length, IN PULONG InIoSpace, IN OUT PVOID *VirtualAddress)
struct _VIDEO_MEMORY_INFORMATION VIDEO_MEMORY_INFORMATION
VP_STATUS NTAPI XboxVmpSetPowerState(PVOID HwDeviceExtension, ULONG HwId, PVIDEO_POWER_MANAGEMENT VideoPowerControl)
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_In_ ULONG _In_ ULONG _In_ ULONG Length
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Definition: nv2a.h:16
BOOLEAN NTAPI XboxVmpResetHw(PVOID DeviceExtension, ULONG Columns, ULONG Rows)
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#define IOCTL_VIDEO_QUERY_NUM_AVAIL_MODES
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Definition: xboxvmp.c:466
NTKERNELAPI UCHAR NTAPI READ_REGISTER_UCHAR(IN PUCHAR Register)
_In_ PNET_PNP_EVENT _In_ PTDI_PNP_CONTEXT _In_ PTDI_PNP_CONTEXT Context2
Definition: tdikrnl.h:1094
Status
Definition: gdiplustypes.h:24
static const COLUMN_LIST Columns[]
Definition: listview.c:19
unsigned short USHORT
Definition: pedump.c:61
#define VIDEO_MODE_COLOR
Definition: ntddvdeo.h:293
PSTATUS_BLOCK StatusBlock
Definition: video.h:331
_In_ PNET_PNP_EVENT _In_ PTDI_PNP_CONTEXT Context1
Definition: tdikrnl.h:1094
static ULONG ScreenWidth
Definition: pcvideo.c:112
BOOLEAN FASTCALL XboxVmpMapVideoMemory(PXBOXVMP_DEVICE_EXTENSION DeviceExtension, PVIDEO_MEMORY RequestedAddress, PVIDEO_MEMORY_INFORMATION MapInformation, PSTATUS_BLOCK StatusBlock)
Definition: xboxvmp.c:384
VPAPI VP_STATUS NTAPI VideoPortGetAccessRanges(IN PVOID HwDeviceExtension, IN ULONG NumRequestedResources, IN PIO_RESOURCE_DESCRIPTOR RequestedResources OPTIONAL, IN ULONG NumAccessRanges, OUT PVIDEO_ACCESS_RANGE AccessRanges, IN PVOID VendorId, IN PVOID DeviceId, OUT PULONG Slot)
struct XBOXVMP_DEVICE_EXTENSION * PXBOXVMP_DEVICE_EXTENSION
#define OUT
Definition: typedefs.h:40
unsigned int ULONG
Definition: retypes.h:1
LONG VP_STATUS
Definition: video.h:153
#define NV2A_RAMDAC_FP_HVALID_END
Definition: machxbox.h:48
#define VIDEO_MEMORY_SPACE_MEMORY
Definition: video.h:132
struct _VIDEO_MODE_INFORMATION VIDEO_MODE_INFORMATION
BOOLEAN FASTCALL XboxVmpUnmapVideoMemory(PXBOXVMP_DEVICE_EXTENSION DeviceExtension, PVIDEO_MEMORY VideoMemory, PSTATUS_BLOCK StatusBlock)
Definition: xboxvmp.c:443
#define WARN_(ch,...)
Definition: debug.h:157
NTKERNELAPI VOID NTAPI WRITE_REGISTER_UCHAR(IN PUCHAR Register, IN UCHAR Value)
ULONG RangeLength
Definition: video.h:216
ULONG_PTR Information
Definition: video.h:326
LONGLONG QuadPart
Definition: typedefs.h:113
PHYSICAL_ADDRESS RangeStart
Definition: video.h:215
#define ERROR_INSUFFICIENT_BUFFER
Definition: dderror.h:10
#define VIDEO_MODE_GRAPHICS
Definition: ntddvdeo.h:294