1 /* $Id: blue.c,v 1.30 2001/07/30 11:49:38 ea Exp $
3 * COPYRIGHT: See COPYING in the top level directory
4 * PROJECT: ReactOS kernel
5 * FILE: services/dd/blue/blue.c
6 * PURPOSE: Console (blue screen) device driver
7 * PROGRAMMER: Eric Kohl (ekohl@abo.rhein-zeitung.de)
12 /* INCLUDES ******************************************************************/
14 #include <ddk/ntddk.h>
15 #include <ddk/ntddblue.h>
23 /* DEFINITIONS ***************************************************************/
25 #define VIDMEM_BASE 0xb8000
26 #define VIDMEM_SIZE 0x2000
28 #define CRTC_COMMAND ((PUCHAR)0x3d4)
29 #define CRTC_DATA ((PUCHAR)0x3d5)
31 #define CRTC_COLUMNS 0x01
32 #define CRTC_OVERFLOW 0x07
33 #define CRTC_ROWS 0x12
34 #define CRTC_SCANLINES 0x09
35 #define CRTC_CURSORSTART 0x0a
36 #define CRTC_CURSOREND 0x0b
37 #define CRTC_CURSORPOSHI 0x0e
38 #define CRTC_CURSORPOSLO 0x0f
40 #define ATTRC_WRITEREG ((PUCHAR)0x3c0)
41 #define ATTRC_READREG ((PUCHAR)0x3c1)
42 #define ATTRC_INPST1 ((PUCHAR)0x3da)
47 /* NOTES ******************************************************************/
49 * [[character][attribute]][[character][attribute]]....
53 /* TYPEDEFS ***************************************************************/
55 typedef struct _DEVICE_EXTENSION
57 PBYTE VideoMemory
; /* Pointer to video memory */
62 BYTE ScanLines
; /* Height of a text line */
63 WORD Rows
; /* Number of rows */
64 WORD Columns
; /* Number of columns */
65 } DEVICE_EXTENSION
, *PDEVICE_EXTENSION
;
68 /* FUNCTIONS **************************************************************/
71 STDCALL
ScrCreate (PDEVICE_OBJECT DeviceObject
, PIRP Irp
)
73 PDEVICE_EXTENSION DeviceExtension
;
74 PHYSICAL_ADDRESS BaseAddress
;
79 DeviceExtension
= DeviceObject
->DeviceExtension
;
81 /* get pointer to video memory */
82 BaseAddress
.QuadPart
= VIDMEM_BASE
;
83 DeviceExtension
->VideoMemory
=
84 (PBYTE
)MmMapIoSpace (BaseAddress
, VIDMEM_SIZE
, FALSE
);
86 /* disable interrupts */
89 /* get current output position */
90 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_CURSORPOSLO
);
91 offset
= READ_PORT_UCHAR (CRTC_DATA
);
92 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_CURSORPOSHI
);
93 offset
+= (READ_PORT_UCHAR (CRTC_DATA
) << 8);
95 /* switch blinking characters off */
96 READ_PORT_UCHAR (ATTRC_INPST1
);
97 value
= READ_PORT_UCHAR (ATTRC_WRITEREG
);
98 WRITE_PORT_UCHAR (ATTRC_WRITEREG
, 0x10);
99 data
= READ_PORT_UCHAR (ATTRC_READREG
);
101 WRITE_PORT_UCHAR (ATTRC_WRITEREG
, data
);
102 WRITE_PORT_UCHAR (ATTRC_WRITEREG
, value
);
103 READ_PORT_UCHAR (ATTRC_INPST1
);
105 /* read screen information from crt controller */
106 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_COLUMNS
);
107 DeviceExtension
->Columns
= READ_PORT_UCHAR (CRTC_DATA
) + 1;
108 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_ROWS
);
109 DeviceExtension
->Rows
= READ_PORT_UCHAR (CRTC_DATA
);
110 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_OVERFLOW
);
111 data
= READ_PORT_UCHAR (CRTC_DATA
);
112 DeviceExtension
->Rows
|= (((data
& 0x02) << 7) | ((data
& 0x40) << 3));
113 DeviceExtension
->Rows
++;
114 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_SCANLINES
);
115 DeviceExtension
->ScanLines
= (READ_PORT_UCHAR (CRTC_DATA
) & 0x1F) + 1;
117 /* enable interrupts */
120 /* calculate number of text rows */
121 DeviceExtension
->Rows
=
122 DeviceExtension
->Rows
/ DeviceExtension
->ScanLines
;
124 DeviceExtension
->Rows
= 30;
127 DPRINT ("%d Columns %d Rows %d Scanlines\n",
128 DeviceExtension
->Columns
,
129 DeviceExtension
->Rows
,
130 DeviceExtension
->ScanLines
);
132 DeviceExtension
->CursorSize
= 5; /* FIXME: value correct?? */
133 DeviceExtension
->CursorVisible
= TRUE
;
135 /* more initialization */
136 DeviceExtension
->CharAttribute
= 0x17; /* light grey on blue */
137 DeviceExtension
->Mode
= ENABLE_PROCESSED_OUTPUT
|
138 ENABLE_WRAP_AT_EOL_OUTPUT
;
140 /* show blinking cursor */
142 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_CURSORSTART
);
143 WRITE_PORT_UCHAR (CRTC_DATA
, (DeviceExtension
->ScanLines
- 1) & 0x1F);
144 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_CURSOREND
);
145 data
= READ_PORT_UCHAR (CRTC_DATA
) & 0xE0;
146 WRITE_PORT_UCHAR (CRTC_DATA
,
147 data
| ((DeviceExtension
->ScanLines
- 1) & 0x1F));
150 Status
= STATUS_SUCCESS
;
152 Irp
->IoStatus
.Status
= Status
;
153 IoCompleteRequest (Irp
, IO_NO_INCREMENT
);
160 STDCALL
ScrWrite (PDEVICE_OBJECT DeviceObject
, PIRP Irp
)
162 PIO_STACK_LOCATION stk
= IoGetCurrentIrpStackLocation (Irp
);
163 PDEVICE_EXTENSION DeviceExtension
= DeviceObject
->DeviceExtension
;
165 char *pch
= Irp
->UserBuffer
;
168 int cursorx
, cursory
;
170 int processed
= DeviceExtension
->Mode
& ENABLE_PROCESSED_OUTPUT
;
172 vidmem
= DeviceExtension
->VideoMemory
;
173 rows
= DeviceExtension
->Rows
;
174 columns
= DeviceExtension
->Columns
;
176 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_CURSORPOSHI
);
177 offset
= READ_PORT_UCHAR (CRTC_DATA
)<<8;
178 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_CURSORPOSLO
);
179 offset
+= READ_PORT_UCHAR (CRTC_DATA
);
181 cursory
= offset
/ columns
;
182 cursorx
= offset
% columns
;
185 /* raw output mode */
186 memcpy( &vidmem
[(cursorx
* 2) + (cursory
* columns
* 2)], pch
, stk
->Parameters
.Write
.Length
);
187 offset
+= (stk
->Parameters
.Write
.Length
/ 2);
190 for (i
= 0; i
< stk
->Parameters
.Write
.Length
; i
++, pch
++)
199 else if (cursory
> 0)
201 cursorx
= columns
- 1;
204 vidmem
[(cursorx
* 2) + (cursory
* columns
* 2)] = ' ';
205 vidmem
[(cursorx
* 2) + (cursory
* columns
* 2) + 1] = (char) DeviceExtension
->CharAttribute
;
218 offset
= TAB_WIDTH
- (cursorx
% TAB_WIDTH
);
219 for (j
= 0; j
< offset
; j
++)
221 vidmem
[(cursorx
* 2) + (cursory
* columns
* 2)] = ' ';
224 if (cursorx
>= columns
)
233 vidmem
[(cursorx
* 2) + (cursory
* columns
* 2)] = *pch
;
234 vidmem
[(cursorx
* 2) + (cursory
* columns
* 2) + 1] = (char) DeviceExtension
->CharAttribute
;
236 if (cursorx
>= columns
)
245 unsigned short *LinePtr
;
248 &vidmem
[columns
* 2],
249 columns
* (rows
- 1) * 2);
251 LinePtr
= (unsigned short *) &vidmem
[columns
* (rows
- 1) * 2];
253 for (j
= 0; j
< columns
; j
++)
255 LinePtr
[j
] = DeviceExtension
->CharAttribute
<< 8;
258 for (j
= 0; j
< columns
; j
++)
260 vidmem
[(j
* 2) + (cursory
* columns
* 2)] = ' ';
261 vidmem
[(j
* 2) + (cursory
* columns
* 2) + 1] = (char)DeviceExtension
->CharAttribute
;
266 /* Set the cursor position */
267 offset
= (cursory
* columns
) + cursorx
;
269 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_CURSORPOSLO
);
270 WRITE_PORT_UCHAR (CRTC_DATA
, offset
);
271 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_CURSORPOSHI
);
273 WRITE_PORT_UCHAR (CRTC_DATA
, offset
);
275 Status
= STATUS_SUCCESS
;
277 Irp
->IoStatus
.Status
= Status
;
278 IoCompleteRequest (Irp
, IO_NO_INCREMENT
);
285 STDCALL
ScrIoControl (PDEVICE_OBJECT DeviceObject
, PIRP Irp
)
287 PIO_STACK_LOCATION stk
= IoGetCurrentIrpStackLocation (Irp
);
288 PDEVICE_EXTENSION DeviceExtension
;
290 DeviceExtension
= DeviceObject
->DeviceExtension
;
291 switch (stk
->Parameters
.DeviceIoControl
.IoControlCode
)
293 case IOCTL_CONSOLE_GET_SCREEN_BUFFER_INFO
:
295 PCONSOLE_SCREEN_BUFFER_INFO pcsbi
= (PCONSOLE_SCREEN_BUFFER_INFO
)Irp
->AssociatedIrp
.SystemBuffer
;
296 int rows
= DeviceExtension
->Rows
;
297 int columns
= DeviceExtension
->Columns
;
300 /* read cursor position from crtc */
302 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_CURSORPOSLO
);
303 offset
= READ_PORT_UCHAR (CRTC_DATA
);
304 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_CURSORPOSHI
);
305 offset
+= (READ_PORT_UCHAR (CRTC_DATA
) << 8);
308 pcsbi
->dwSize
.X
= columns
;
309 pcsbi
->dwSize
.Y
= rows
;
311 pcsbi
->dwCursorPosition
.X
= (SHORT
)(offset
% columns
);
312 pcsbi
->dwCursorPosition
.Y
= (SHORT
)(offset
/ columns
);
314 pcsbi
->wAttributes
= DeviceExtension
->CharAttribute
;
316 pcsbi
->srWindow
.Left
= 0;
317 pcsbi
->srWindow
.Right
= columns
- 1;
318 pcsbi
->srWindow
.Top
= 0;
319 pcsbi
->srWindow
.Bottom
= rows
- 1;
321 pcsbi
->dwMaximumWindowSize
.X
= columns
;
322 pcsbi
->dwMaximumWindowSize
.Y
= rows
;
324 Irp
->IoStatus
.Information
= sizeof (CONSOLE_SCREEN_BUFFER_INFO
);
325 Status
= STATUS_SUCCESS
;
329 case IOCTL_CONSOLE_SET_SCREEN_BUFFER_INFO
:
331 PCONSOLE_SCREEN_BUFFER_INFO pcsbi
= (PCONSOLE_SCREEN_BUFFER_INFO
)Irp
->AssociatedIrp
.SystemBuffer
;
334 DeviceExtension
->CharAttribute
= pcsbi
->wAttributes
;
335 offset
= (pcsbi
->dwCursorPosition
.Y
* DeviceExtension
->Columns
) +
336 pcsbi
->dwCursorPosition
.X
;
339 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_CURSORPOSLO
);
340 WRITE_PORT_UCHAR (CRTC_DATA
, offset
);
341 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_CURSORPOSHI
);
342 WRITE_PORT_UCHAR (CRTC_DATA
, offset
>>8);
345 Irp
->IoStatus
.Information
= 0;
346 Status
= STATUS_SUCCESS
;
350 case IOCTL_CONSOLE_GET_CURSOR_INFO
:
352 PCONSOLE_CURSOR_INFO pcci
= (PCONSOLE_CURSOR_INFO
)Irp
->AssociatedIrp
.SystemBuffer
;
354 pcci
->dwSize
= DeviceExtension
->CursorSize
;
355 pcci
->bVisible
= DeviceExtension
->CursorVisible
;
357 Irp
->IoStatus
.Information
= sizeof (CONSOLE_CURSOR_INFO
);
358 Status
= STATUS_SUCCESS
;
362 case IOCTL_CONSOLE_SET_CURSOR_INFO
:
364 PCONSOLE_CURSOR_INFO pcci
= (PCONSOLE_CURSOR_INFO
)Irp
->AssociatedIrp
.SystemBuffer
;
368 DeviceExtension
->CursorSize
= pcci
->dwSize
;
369 DeviceExtension
->CursorVisible
= pcci
->bVisible
;
370 height
= DeviceExtension
->ScanLines
;
371 data
= (pcci
->bVisible
) ? 0x40 : 0x20;
373 size
= (pcci
->dwSize
* height
) / 100;
377 data
|= (BYTE
)(height
- size
);
380 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_CURSORSTART
);
381 WRITE_PORT_UCHAR (CRTC_DATA
, data
);
382 WRITE_PORT_UCHAR (CRTC_COMMAND
, CRTC_CURSOREND
);
383 value
= READ_PORT_UCHAR (CRTC_DATA
) & 0xE0;
384 WRITE_PORT_UCHAR (CRTC_DATA
, value
| (height
- 1));
388 Irp
->IoStatus
.Information
= 0;
389 Status
= STATUS_SUCCESS
;
393 case IOCTL_CONSOLE_GET_MODE
:
395 PCONSOLE_MODE pcm
= (PCONSOLE_MODE
)Irp
->AssociatedIrp
.SystemBuffer
;
397 pcm
->dwMode
= DeviceExtension
->Mode
;
399 Irp
->IoStatus
.Information
= sizeof(CONSOLE_MODE
);
400 Status
= STATUS_SUCCESS
;
404 case IOCTL_CONSOLE_SET_MODE
:
406 PCONSOLE_MODE pcm
= (PCONSOLE_MODE
)Irp
->AssociatedIrp
.SystemBuffer
;
408 DeviceExtension
->Mode
= pcm
->dwMode
;
410 Irp
->IoStatus
.Information
= 0;
411 Status
= STATUS_SUCCESS
;
415 case IOCTL_CONSOLE_FILL_OUTPUT_ATTRIBUTE
:
417 POUTPUT_ATTRIBUTE Buf
= (POUTPUT_ATTRIBUTE
)Irp
->AssociatedIrp
.SystemBuffer
;
422 vidmem
= DeviceExtension
->VideoMemory
;
423 offset
= (Buf
->dwCoord
.Y
* DeviceExtension
->Columns
* 2) +
424 (Buf
->dwCoord
.X
* 2) + 1;
426 for (dwCount
= 0; dwCount
< Buf
->nLength
; dwCount
++)
428 vidmem
[offset
+ (dwCount
* 2)] = (char) Buf
->wAttribute
;
431 Buf
->dwTransfered
= Buf
->nLength
;
433 Irp
->IoStatus
.Information
= 0;
434 Status
= STATUS_SUCCESS
;
438 case IOCTL_CONSOLE_READ_OUTPUT_ATTRIBUTE
:
440 POUTPUT_ATTRIBUTE Buf
= (POUTPUT_ATTRIBUTE
)Irp
->AssociatedIrp
.SystemBuffer
;
441 PWORD pAttr
= (PWORD
)MmGetSystemAddressForMdl(Irp
->MdlAddress
);
446 vidmem
= DeviceExtension
->VideoMemory
;
447 offset
= (Buf
->dwCoord
.Y
* DeviceExtension
->Columns
* 2) +
448 (Buf
->dwCoord
.X
* 2) + 1;
450 for (dwCount
= 0; dwCount
< stk
->Parameters
.Write
.Length
; dwCount
++, pAttr
++)
452 (char) *pAttr
= vidmem
[offset
+ (dwCount
* 2)];
455 Buf
->dwTransfered
= dwCount
;
457 Irp
->IoStatus
.Information
= sizeof(OUTPUT_ATTRIBUTE
);
458 Status
= STATUS_SUCCESS
;
462 case IOCTL_CONSOLE_WRITE_OUTPUT_ATTRIBUTE
:
464 COORD
*pCoord
= (COORD
*)MmGetSystemAddressForMdl(Irp
->MdlAddress
);
465 CHAR
*pAttr
= (CHAR
*)(pCoord
+ 1);
470 vidmem
= DeviceExtension
->VideoMemory
;
471 offset
= (pCoord
->Y
* DeviceExtension
->Columns
* 2) +
474 for (dwCount
= 0; dwCount
< (stk
->Parameters
.Write
.Length
- sizeof( COORD
)); dwCount
++, pAttr
++)
476 vidmem
[offset
+ (dwCount
* 2)] = *pAttr
;
478 Irp
->IoStatus
.Information
= 0;
479 Status
= STATUS_SUCCESS
;
483 case IOCTL_CONSOLE_SET_TEXT_ATTRIBUTE
:
484 DeviceExtension
->CharAttribute
= (WORD
)*(PWORD
)Irp
->AssociatedIrp
.SystemBuffer
;
485 Irp
->IoStatus
.Information
= 0;
486 Status
= STATUS_SUCCESS
;
490 case IOCTL_CONSOLE_FILL_OUTPUT_CHARACTER
:
492 POUTPUT_CHARACTER Buf
= (POUTPUT_CHARACTER
)Irp
->AssociatedIrp
.SystemBuffer
;
497 vidmem
= DeviceExtension
->VideoMemory
;
498 offset
= (Buf
->dwCoord
.Y
* DeviceExtension
->Columns
* 2) +
499 (Buf
->dwCoord
.X
* 2);
503 for (dwCount
= 0; dwCount
< Buf
->nLength
; dwCount
++)
505 vidmem
[offset
+ (dwCount
* 2)] = (char) Buf
->cCharacter
;
508 Buf
->dwTransfered
= Buf
->nLength
;
510 Irp
->IoStatus
.Information
= 0;
511 Status
= STATUS_SUCCESS
;
515 case IOCTL_CONSOLE_READ_OUTPUT_CHARACTER
:
517 POUTPUT_CHARACTER Buf
= (POUTPUT_CHARACTER
)Irp
->AssociatedIrp
.SystemBuffer
;
518 LPSTR pChar
= (LPSTR
)MmGetSystemAddressForMdl(Irp
->MdlAddress
);
523 vidmem
= DeviceExtension
->VideoMemory
;
524 offset
= (Buf
->dwCoord
.Y
* DeviceExtension
->Columns
* 2) +
525 (Buf
->dwCoord
.X
* 2);
527 for (dwCount
= 0; dwCount
< stk
->Parameters
.Write
.Length
; dwCount
++, pChar
++)
529 *pChar
= vidmem
[offset
+ (dwCount
* 2)];
532 Buf
->dwTransfered
= dwCount
;
534 Irp
->IoStatus
.Information
= sizeof(OUTPUT_ATTRIBUTE
);
535 Status
= STATUS_SUCCESS
;
539 case IOCTL_CONSOLE_WRITE_OUTPUT_CHARACTER
:
546 pCoord
= (COORD
*)MmGetSystemAddressForMdl(Irp
->MdlAddress
);
547 pChar
= (CHAR
*)(pCoord
+ 1);
548 vidmem
= DeviceExtension
->VideoMemory
;
549 offset
= (pCoord
->Y
* DeviceExtension
->Columns
* 2) +
552 for (dwCount
= 0; dwCount
< (stk
->Parameters
.Write
.Length
- sizeof( COORD
)); dwCount
++, pChar
++)
554 vidmem
[offset
+ (dwCount
* 2)] = *pChar
;
557 Irp
->IoStatus
.Information
= 0;
558 Status
= STATUS_SUCCESS
;
564 Status
= STATUS_NOT_IMPLEMENTED
;
567 Irp
->IoStatus
.Status
= Status
;
568 IoCompleteRequest (Irp
, IO_NO_INCREMENT
);
575 STDCALL
ScrDispatch (PDEVICE_OBJECT DeviceObject
, PIRP Irp
)
577 PIO_STACK_LOCATION stk
= IoGetCurrentIrpStackLocation(Irp
);
580 switch (stk
->MajorFunction
)
583 Status
= STATUS_SUCCESS
;
587 Status
= STATUS_NOT_IMPLEMENTED
;
592 Irp
->IoStatus
.Status
= Status
;
593 IoCompleteRequest (Irp
, IO_NO_INCREMENT
);
604 DriverEntry (PDRIVER_OBJECT DriverObject
, PUNICODE_STRING RegistryPath
)
606 PDEVICE_OBJECT DeviceObject
;
607 UNICODE_STRING DeviceName
;
608 UNICODE_STRING SymlinkName
;
610 DbgPrint ("Screen Driver 0.0.6\n");
612 DriverObject
->MajorFunction
[IRP_MJ_CREATE
] = ScrCreate
;
613 DriverObject
->MajorFunction
[IRP_MJ_CLOSE
] = ScrDispatch
;
614 DriverObject
->MajorFunction
[IRP_MJ_READ
] = ScrDispatch
;
615 DriverObject
->MajorFunction
[IRP_MJ_WRITE
] = ScrWrite
;
616 DriverObject
->MajorFunction
[IRP_MJ_DEVICE_CONTROL
] = ScrIoControl
;
618 RtlInitUnicodeString (&DeviceName
, L
"\\Device\\BlueScreen");
619 IoCreateDevice (DriverObject
,
620 sizeof(DEVICE_EXTENSION
),
627 RtlInitUnicodeString (&SymlinkName
, L
"\\??\\BlueScreen");
628 IoCreateSymbolicLink (&SymlinkName
, &DeviceName
);
630 return (STATUS_SUCCESS
);