summaryrefslogtreecommitdiff
path: root/src/ast_cursor.c
blob: 55bf208a30b932a3caf71a65a83fe0d7b07e7b9b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
/*
 * Copyright (c) 2005 ASPEED Technology Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of the authors not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  The authors makes no representations
 * about the suitability of this software for any purpose.  It is provided
 * "as is" without express or implied warranty.
 *
 * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "xf86.h"
#include "xf86_OSproc.h"
#include "xf86cmap.h"
#include "compiler.h"
#include "vgaHW.h"
#include "mipointer.h"
#include "micmap.h"

#include "fb.h"
#include "regionstr.h"
#include "xf86xv.h"
#include <X11/extensions/Xv.h>

#include "xf86Pci.h"

/* framebuffer offscreen manager */
#include "xf86fbman.h"

/* include xaa includes */
#include "xaarop.h"

/* H/W cursor support */
#include "xf86Cursor.h"
#include "cursorstr.h"

/* Driver specific headers */
#include "ast.h"
#include "ast_vgatool.h"
#include "ast_cursor.h"

#ifdef	HWC
/* Prototype type declaration */
static void ASTShowCursor(ScrnInfoPtr pScrn);
static void ASTHideCursor(ScrnInfoPtr pScrn);
static void ASTSetCursorPosition(ScrnInfoPtr pScrn, int x, int y);
static void ASTSetCursorColors(ScrnInfoPtr pScrn, int bg, int fg);
static void ASTLoadCursorImage(ScrnInfoPtr pScrn, UCHAR *src);
static Bool ASTUseHWCursor(ScreenPtr pScreen, CursorPtr pCurs);
static void ASTLoadCursorARGB(ScrnInfoPtr pScrn, CursorPtr pCurs);
static Bool ASTUseHWCursorARGB(ScreenPtr pScreen, CursorPtr pCurs);
static void ASTFireCursor(ScrnInfoPtr pScrn);
static void ASTShowCursor_AST1180(ScrnInfoPtr pScrn);
static void ASTHideCursor_AST1180(ScrnInfoPtr pScrn);
static void ASTSetCursorPosition_AST1180(ScrnInfoPtr pScrn, int x, int y);

Bool
ASTCursorInit(ScreenPtr pScreen)
{
    ScrnInfoPtr	pScrn = xf86ScreenToScrn(pScreen);
    ASTRecPtr 	pAST = ASTPTR(pScrn);
    xf86CursorInfoPtr infoPtr;

    infoPtr = xf86CreateCursorInfoRec();
    if(!infoPtr) return FALSE;

    pAST->HWCInfoPtr = infoPtr;

    infoPtr->Flags = HARDWARE_CURSOR_TRUECOLOR_AT_8BPP |
                     HARDWARE_CURSOR_INVERT_MASK |
                     HARDWARE_CURSOR_BIT_ORDER_MSBFIRST;

    infoPtr->MaxWidth  = MAX_HWC_WIDTH;
    infoPtr->MaxHeight = MAX_HWC_HEIGHT;
    if (pAST->jChipType == AST1180)
    {
        infoPtr->ShowCursor = ASTShowCursor_AST1180;
        infoPtr->HideCursor = ASTHideCursor_AST1180;
        infoPtr->SetCursorPosition = ASTSetCursorPosition_AST1180;
    }
    else
    {
        infoPtr->ShowCursor = ASTShowCursor;
        infoPtr->HideCursor = ASTHideCursor;
        infoPtr->SetCursorPosition = ASTSetCursorPosition;
    }
    infoPtr->SetCursorColors = ASTSetCursorColors;
    infoPtr->LoadCursorImage = ASTLoadCursorImage;
    infoPtr->UseHWCursor = ASTUseHWCursor;
#ifdef ARGB_CURSOR
    infoPtr->UseHWCursorARGB = ASTUseHWCursorARGB;
    infoPtr->LoadCursorARGB = ASTLoadCursorARGB;
#endif

    return(xf86InitCursor(pScreen, infoPtr));

}

Bool bASTInitHWC(ScrnInfoPtr pScrn, ASTRecPtr pAST)
{
    ScreenPtr	pScreen;

    /* init cursor cache info */
    /* Set HWC_NUM in Options instead */
    /* pAST->HWCInfo.HWC_NUM = DEFAULT_HWC_NUM; */
    pAST->HWCInfo.HWC_NUM_Next = 0;

    /* allocate HWC cache */
    if (!pAST->pHWCPtr) {
        pScreen = xf86ScrnToScreen(pScrn);
        pAST->pHWCPtr = xf86AllocateOffscreenLinear (pScreen, (HWC_SIZE+HWC_SIGNATURE_SIZE)*pAST->HWCInfo.HWC_NUM, HWC_ALIGN, NULL, NULL, NULL);

        if (!pAST->pHWCPtr) {
           xf86DrvMsg(pScrn->scrnIndex, X_ERROR,"Allocate HWC Cache failed \n");
           return (FALSE);
        }

        pAST->HWCInfo.ulHWCOffsetAddr  = pAST->pHWCPtr->offset*((pScrn->bitsPerPixel + 1) / 8);
        pAST->HWCInfo.pjHWCVirtualAddr = pAST->FBVirtualAddr + pAST->HWCInfo.ulHWCOffsetAddr;
    }

    return (TRUE);
}

void ASTDisableHWC(ScrnInfoPtr pScrn)
{
    ASTRecPtr   pAST = ASTPTR(pScrn);

    if (pAST->jChipType == AST1180)
        ASTHideCursor_AST1180(pScrn);
    else
        ASTHideCursor(pScrn);
}

static void
ASTShowCursor(ScrnInfoPtr pScrn)
{
    ASTRecPtr   pAST = ASTPTR(pScrn);
    UCHAR 	jReg;

    jReg= 0x02;
    if (pAST->HWCInfo.cursortype ==HWC_COLOR)
        jReg |= 0x01;

    SetIndexRegMask(CRTC_PORT, 0xCB, 0xFC, jReg);	/* enable mono */

}

static void
ASTHideCursor(ScrnInfoPtr pScrn)
{
    ASTRecPtr  pAST = ASTPTR(pScrn);

    SetIndexRegMask(CRTC_PORT, 0xCB, 0xFC, 0x00);	/* disable HWC */

}

static void
ASTSetCursorPosition(ScrnInfoPtr pScrn, int x, int y)
{
    ASTRecPtr	pAST = ASTPTR(pScrn);
    DisplayModePtr mode = pAST->ModePtr;
    int		x_offset, y_offset;
    UCHAR 	*pjSignature;

    /* Set cursor info to Offscreen */
    pjSignature = (UCHAR *) pAST->HWCInfo.pjHWCVirtualAddr + (HWC_SIZE+HWC_SIGNATURE_SIZE)*pAST->HWCInfo.HWC_NUM_Next + HWC_SIZE;
    *((ULONG *) (pjSignature + HWC_SIGNATURE_X)) = x;
    *((ULONG *) (pjSignature + HWC_SIGNATURE_Y)) = y;

    x_offset = pAST->HWCInfo.offset_x;
    y_offset = pAST->HWCInfo.offset_y;

    if(x < 0) {
       x_offset = (-x) + pAST->HWCInfo.offset_x;
       x = 0;
    }

    if(y < 0) {
       y_offset = (-y) + pAST->HWCInfo.offset_y;
       y = 0;
    }

    if(mode->Flags & V_DBLSCAN)  y *= 2;

    /* Set to Reg. */
    SetIndexReg(CRTC_PORT, 0xC2, (UCHAR) (x_offset));
    SetIndexReg(CRTC_PORT, 0xC3, (UCHAR) (y_offset));
    SetIndexReg(CRTC_PORT, 0xC4, (UCHAR) (x & 0xFF));
    SetIndexReg(CRTC_PORT, 0xC5, (UCHAR) ((x >> 8) & 0x0F));
    SetIndexReg(CRTC_PORT, 0xC6, (UCHAR) (y & 0xFF));
    SetIndexReg(CRTC_PORT, 0xC7, (UCHAR) ((y >> 8) & 0x07));

    /* Fire HWC */
    ASTFireCursor(pScrn);

}

static void
ASTSetCursorColors(ScrnInfoPtr pScrn, int bg, int fg)
{
    ASTRecPtr 	pAST = ASTPTR(pScrn);
    ULONG fg1, bg1;

    fg1 = (fg & 0x0F) | (((fg>>8) & 0x0F) << 4) | (((fg>>16) & 0x0F) << 8);
    bg1 = (bg & 0x0F) | (((bg>>8) & 0x0F) << 4) | (((bg>>16) & 0x0F) << 8);

    /* Fixed xorg bugzilla #20609, ycchen@031209 */
    if ( (fg1 != pAST->HWCInfo.fg) || (bg1 != pAST->HWCInfo.bg) )
    {
    	pAST->HWCInfo.fg = fg1;
    	pAST->HWCInfo.bg = bg1;
        ASTLoadCursorImage(pScrn, pAST->HWCInfo.cursorpattern);
    }

}

static void
ASTLoadCursorImage(ScrnInfoPtr pScrn, UCHAR *src)
{
    ASTRecPtr	pAST = ASTPTR(pScrn);
    int 	i, j, k;
    UCHAR 	*pjSrcAnd, *pjSrcXor, *pjDstData;
    ULONG   	ulTempDstAnd32[2], ulTempDstXor32[2], ulTempDstData32[2];
    UCHAR    	jTempSrcAnd32, jTempSrcXor32;
    ULONG	ulCheckSum = 0;
    ULONG 	ulPatternAddr;

    /* init cursor info. */
    pAST->HWCInfo.cursortype = HWC_MONO;
    pAST->HWCInfo.width  = (USHORT) MAX_HWC_WIDTH;
    pAST->HWCInfo.height = (USHORT) MAX_HWC_HEIGHT;
    pAST->HWCInfo.offset_x = MAX_HWC_WIDTH - pAST->HWCInfo.width;
    pAST->HWCInfo.offset_y = MAX_HWC_HEIGHT - pAST->HWCInfo.height;

    /* copy to hwc info */
    for (i=0; i< MAX_HWC_WIDTH*MAX_HWC_HEIGHT/4; i+=4)
       *(ULONG *) (pAST->HWCInfo.cursorpattern + i) = *(ULONG *) (src + i);

    /* copy cursor image to cache */
    pjSrcXor = src;
    pjSrcAnd = src + (MAX_HWC_WIDTH*MAX_HWC_HEIGHT/8);
    pjDstData =  pAST->HWCInfo.pjHWCVirtualAddr+(HWC_SIZE+HWC_SIGNATURE_SIZE)*pAST->HWCInfo.HWC_NUM_Next;

    for (j = 0; j < MAX_HWC_HEIGHT; j++)
    {
       for (i = 0; i < (MAX_HWC_WIDTH/8); i++ )
       {
       	    for (k=7; k>0; k-=2)
       	    {
                jTempSrcAnd32 = *((UCHAR *) pjSrcAnd);
                jTempSrcXor32 = *((UCHAR *) pjSrcXor);
                ulTempDstAnd32[0] = ((jTempSrcAnd32 >> k) & 0x01) ? 0x00008000L:0x00L;
                ulTempDstXor32[0] = ((jTempSrcXor32 >> k) & 0x01) ? 0x00004000L:0x00L;
                ulTempDstData32[0] = ((jTempSrcXor32 >> k) & 0x01) ? pAST->HWCInfo.fg:pAST->HWCInfo.bg;
                ulTempDstAnd32[1] = ((jTempSrcAnd32 >> (k-1)) & 0x01) ? 0x80000000L:0x00L;
                ulTempDstXor32[1] = ((jTempSrcXor32 >> (k-1)) & 0x01) ? 0x40000000L:0x00L;
                ulTempDstData32[1] = ((jTempSrcXor32 >> (k-1)) & 0x01) ? (pAST->HWCInfo.fg << 16):(pAST->HWCInfo.bg << 16);
                /* No inverse for X Window cursor, ycchen@111808 */
                if (ulTempDstAnd32[0])
                    ulTempDstXor32[0] = 0;
                if (ulTempDstAnd32[1])
                    ulTempDstXor32[1] = 0;
                *((ULONG *) pjDstData) = ulTempDstAnd32[0] | ulTempDstXor32[0] | ulTempDstData32[0] | ulTempDstAnd32[1] | ulTempDstXor32[1] | ulTempDstData32[1];
                ulCheckSum += *((ULONG *) pjDstData);
                pjDstData += 4;

            }
            pjSrcAnd ++;
            pjSrcXor ++;

       }

    }

    if (pAST->jChipType == AST1180)
    {
        ulPatternAddr = pAST->ulVRAMBase + (pAST->HWCInfo.ulHWCOffsetAddr+(HWC_SIZE+HWC_SIGNATURE_SIZE)*pAST->HWCInfo.HWC_NUM_Next);
        WriteAST1180SOC(AST1180_GFX_BASE+AST1180_HWC1_PATTERNADDR, ulPatternAddr);
    }
    else
    {
        /* Write Checksum as signature */
        pjDstData = (UCHAR *) pAST->HWCInfo.pjHWCVirtualAddr + (HWC_SIZE+HWC_SIGNATURE_SIZE)*pAST->HWCInfo.HWC_NUM_Next + HWC_SIZE;
        *((ULONG *) pjDstData) = ulCheckSum;
        *((ULONG *) (pjDstData + HWC_SIGNATURE_SizeX)) = pAST->HWCInfo.width;
        *((ULONG *) (pjDstData + HWC_SIGNATURE_SizeY)) = pAST->HWCInfo.height;
        *((ULONG *) (pjDstData + HWC_SIGNATURE_HOTSPOTX)) = 0;
        *((ULONG *) (pjDstData + HWC_SIGNATURE_HOTSPOTY)) = 0;

        /* set pattern offset */
        ulPatternAddr = ((pAST->HWCInfo.ulHWCOffsetAddr+(HWC_SIZE+HWC_SIGNATURE_SIZE)*pAST->HWCInfo.HWC_NUM_Next) >> 3);
        SetIndexReg(CRTC_PORT, 0xC8, (UCHAR) (ulPatternAddr & 0xFF));
        SetIndexReg(CRTC_PORT, 0xC9, (UCHAR) ((ulPatternAddr >> 8) & 0xFF));
        SetIndexReg(CRTC_PORT, 0xCA, (UCHAR) ((ulPatternAddr >> 16) & 0xFF));
    }

    /* update HWC_NUM_Next */
    pAST->HWCInfo.HWC_NUM_Next = (pAST->HWCInfo.HWC_NUM_Next+1) % pAST->HWCInfo.HWC_NUM;

}

static Bool
ASTUseHWCursor(ScreenPtr pScreen, CursorPtr pCurs)
{
    if ( (pCurs->bits->width > MAX_HWC_WIDTH) || (pCurs->bits->height > MAX_HWC_HEIGHT) )
        return FALSE;

    return TRUE;
}

static void
ASTLoadCursorARGB(ScrnInfoPtr pScrn, CursorPtr pCurs)
{
    ASTRecPtr 	pAST = ASTPTR(pScrn);

    UCHAR	*pjDstXor, *pjSrcXor;
    ULONG       i, j, ulSrcWidth, ulSrcHeight;
    ULONG	ulPerPixelCopy, ulTwoPixelCopy;
    LONG        lAlphaDstDelta, lLastAlphaDstDelta;
    union
    {
        ULONG   ul;
        UCHAR   b[4];
    } ulSrcData32[2], ulData32;
    union
    {
        USHORT  us;
        UCHAR   b[2];
    } usData16;
    ULONG	ulCheckSum = 0;
    ULONG 	ulPatternAddr;

    /* init cursor info. */
    pAST->HWCInfo.cursortype = HWC_COLOR;
    pAST->HWCInfo.width  = pCurs->bits->width;
    pAST->HWCInfo.height = pCurs->bits->height;
    pAST->HWCInfo.offset_x = MAX_HWC_WIDTH - pAST->HWCInfo.width;
    pAST->HWCInfo.offset_y = MAX_HWC_HEIGHT - pAST->HWCInfo.height;

    /* copy cursor image to cache */
    ulSrcWidth  =  pAST->HWCInfo.width;
    ulSrcHeight =  pAST->HWCInfo.height;

    lAlphaDstDelta = MAX_HWC_WIDTH << 1;
    lLastAlphaDstDelta = lAlphaDstDelta - (ulSrcWidth << 1);

    pjSrcXor  = (UCHAR *) pCurs->bits->argb;;
    pjDstXor  = (UCHAR *) pAST->HWCInfo.pjHWCVirtualAddr + (HWC_SIZE+HWC_SIGNATURE_SIZE)*pAST->HWCInfo.HWC_NUM_Next
                        + lLastAlphaDstDelta + (MAX_HWC_HEIGHT - ulSrcHeight) * lAlphaDstDelta;

    ulPerPixelCopy =  ulSrcWidth & 1;
    ulTwoPixelCopy =  ulSrcWidth >> 1;

    for (j = 0; j < ulSrcHeight; j++)
    {

        for (i = 0; i < ulTwoPixelCopy; i++ )
        {
            ulSrcData32[0].ul = *((ULONG *) pjSrcXor) & 0xF0F0F0F0;
            ulSrcData32[1].ul = *((ULONG *) (pjSrcXor+4)) & 0xF0F0F0F0;
            ulData32.b[0] = ulSrcData32[0].b[1] | (ulSrcData32[0].b[0] >> 4);
            ulData32.b[1] = ulSrcData32[0].b[3] | (ulSrcData32[0].b[2] >> 4);
            ulData32.b[2] = ulSrcData32[1].b[1] | (ulSrcData32[1].b[0] >> 4);
            ulData32.b[3] = ulSrcData32[1].b[3] | (ulSrcData32[1].b[2] >> 4);
            *((ULONG *) pjDstXor) = ulData32.ul;
            ulCheckSum += (ULONG) ulData32.ul;
            pjDstXor += 4;
            pjSrcXor += 8;
        }

        for (i = 0; i < ulPerPixelCopy; i++ )
        {
            ulSrcData32[0].ul = *((ULONG *) pjSrcXor) & 0xF0F0F0F0;
            usData16.b[0] = ulSrcData32[0].b[1] | (ulSrcData32[0].b[0] >> 4);
            usData16.b[1] = ulSrcData32[0].b[3] | (ulSrcData32[0].b[2] >> 4);
            *((USHORT *) pjDstXor) = usData16.us;
            ulCheckSum += (ULONG) usData16.us;
            pjDstXor += 2;
            pjSrcXor += 4;
        }

        /* Point to next source and dest scans */
        pjDstXor += lLastAlphaDstDelta;

    } /* end of for-loop */

    if (pAST->jChipType == AST1180)
    {
        ulPatternAddr = pAST->ulVRAMBase + (pAST->HWCInfo.ulHWCOffsetAddr+(HWC_SIZE+HWC_SIGNATURE_SIZE)*pAST->HWCInfo.HWC_NUM_Next);
        WriteAST1180SOC(AST1180_GFX_BASE+AST1180_HWC1_PATTERNADDR, ulPatternAddr);
    }
    else
    {
        /* Write Checksum as signature */
        pjDstXor = (UCHAR *) pAST->HWCInfo.pjHWCVirtualAddr + (HWC_SIZE+HWC_SIGNATURE_SIZE)*pAST->HWCInfo.HWC_NUM_Next + HWC_SIZE;
        *((ULONG *) pjDstXor) = ulCheckSum;
        *((ULONG *) (pjDstXor + HWC_SIGNATURE_SizeX)) = pAST->HWCInfo.width;
        *((ULONG *) (pjDstXor + HWC_SIGNATURE_SizeY)) = pAST->HWCInfo.height;
        *((ULONG *) (pjDstXor + HWC_SIGNATURE_HOTSPOTX)) = 0;
        *((ULONG *) (pjDstXor + HWC_SIGNATURE_HOTSPOTY)) = 0;

        /* set pattern offset */
        ulPatternAddr = ((pAST->HWCInfo.ulHWCOffsetAddr +(HWC_SIZE+HWC_SIGNATURE_SIZE)*pAST->HWCInfo.HWC_NUM_Next) >> 3);
        SetIndexReg(CRTC_PORT, 0xC8, (UCHAR) (ulPatternAddr & 0xFF));
        SetIndexReg(CRTC_PORT, 0xC9, (UCHAR) ((ulPatternAddr >> 8) & 0xFF));
        SetIndexReg(CRTC_PORT, 0xCA, (UCHAR) ((ulPatternAddr >> 16) & 0xFF));
    }

    /* update HWC_NUM_Next */
    pAST->HWCInfo.HWC_NUM_Next = (pAST->HWCInfo.HWC_NUM_Next+1) % pAST->HWCInfo.HWC_NUM;

}

static Bool
ASTUseHWCursorARGB(ScreenPtr pScreen, CursorPtr pCurs)
{
    if ( (pCurs->bits->width > MAX_HWC_WIDTH) || (pCurs->bits->height > MAX_HWC_HEIGHT) )
        return FALSE;

    return TRUE;
}

static void
ASTFireCursor(ScrnInfoPtr pScrn)
{
    ASTRecPtr  pAST = ASTPTR(pScrn);

    SetIndexRegMask(CRTC_PORT, 0xCB, 0xFF, 0x00);	/* dummy write to fire HWC */

}

/* AST1180 */
static void
ASTShowCursor_AST1180(ScrnInfoPtr pScrn)
{
    ASTRecPtr   pAST = ASTPTR(pScrn);
    ULONG 	ulData, ulTemp;

    ReadAST1180SOC(AST1180_GFX_BASE+AST1180_HWC1_POSITION, ulTemp);

    ReadAST1180SOC(AST1180_GFX_BASE+AST1180_VGA1_CTRL, ulData);
    ulData &= ~AST1180_ALPHAHWC;
    if (pAST->HWCInfo.cursortype ==HWC_COLOR)
        ulData |= AST1180_ALPHAHWC;
    ulData |= AST1180_ENABLEHWC;
    WriteAST1180SOC(AST1180_GFX_BASE+AST1180_VGA1_CTRL, ulData);

    /* fire cursor */
    WriteAST1180SOC(AST1180_GFX_BASE+AST1180_HWC1_POSITION, ulTemp);

} /* ASTShowCursor_AST1180 */

static void
ASTHideCursor_AST1180(ScrnInfoPtr pScrn)
{
    ASTRecPtr  pAST = ASTPTR(pScrn);
    ULONG 	ulData;

    ReadAST1180SOC(AST1180_GFX_BASE+AST1180_VGA1_CTRL, ulData);
    ulData &= ~AST1180_ENABLEHWC;
    WriteAST1180SOC(AST1180_GFX_BASE+AST1180_VGA1_CTRL, ulData);

    /* fire cursor */
    WriteAST1180SOC(AST1180_GFX_BASE+AST1180_HWC1_POSITION, 0x07ff07ff);

} /* ASTHideCursor_AST1180 */

static void
ASTSetCursorPosition_AST1180(ScrnInfoPtr pScrn, int x, int y)
{
    ASTRecPtr	pAST = ASTPTR(pScrn);
    DisplayModePtr mode = pAST->ModePtr;
    int		x_offset, y_offset;
    ULONG	ulData;

    x_offset = pAST->HWCInfo.offset_x;
    y_offset = pAST->HWCInfo.offset_y;

    if(x < 0) {
       x_offset = (-x) + pAST->HWCInfo.offset_x;
       x = 0;
    }

    if(y < 0) {
       y_offset = (-y) + pAST->HWCInfo.offset_y;
       y = 0;
    }

    if(mode->Flags & V_DBLSCAN)  y *= 2;

    /* Set to Reg. */
    ulData = (x_offset) | (y_offset << 8);
    WriteAST1180SOC(AST1180_GFX_BASE+AST1180_HWC1_OFFSET, ulData);
    ulData = (x) | (y << 16);
    WriteAST1180SOC(AST1180_GFX_BASE+AST1180_HWC1_POSITION, ulData);

} /* ASTSetCursorPosition_AST1180 */

#endif	/* End of HWC */