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
|
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/cirrus/alp_hwcurs.c,v 1.5 2001/05/07 21:59:06 tsi Exp $ */
/* (c) Itai Nahshon */
#include "xf86.h"
#include "xf86_OSproc.h"
#include "xf86_ansic.h"
#include "compiler.h"
#include "xf86Pci.h"
#include "xf86PciInfo.h"
#include "vgaHW.h"
#include "cir.h"
#define _ALP_PRIVATE_
#include "alp.h"
#define CURSORWIDTH pAlp->CursorWidth
#define CURSORHEIGHT pAlp->CursorHeight
#define CURSORSIZE (CURSORWIDTH*CURSORHEIGHT/8)
#define MAXCURSORSIZE (64*64>>3)
static void
AlpSetCursorColors(ScrnInfoPtr pScrn, int bg, int fg)
{
const AlpPtr pAlp = ALPPTR(CIRPTR(pScrn));
vgaHWPtr hwp = VGAHWPTR(pScrn);
#ifdef ALP_DEBUG
ErrorF("AlpSetCursorColors\n");
#endif
hwp->writeSeq(hwp, 0x12, pAlp->ModeReg.ExtVga[SR12]|0x02);
hwp->writeDacWriteAddr(hwp, 0x00);
hwp->writeDacData(hwp, 0x3f & (bg >> 18));
hwp->writeDacData(hwp, 0x3f & (bg >> 10));
hwp->writeDacData(hwp, 0x3f & (bg >> 2));
hwp->writeDacWriteAddr(hwp, 0x0F);
hwp->writeDacData(hwp, 0x3F & (fg >> 18));
hwp->writeDacData(hwp, 0x3F & (fg >> 10));
hwp->writeDacData(hwp, 0x3F & (fg >> 2));
hwp->writeSeq(hwp, 0x12, pAlp->ModeReg.ExtVga[SR12]);
}
static void
AlpLoadSkewedCursor(CirPtr pCir, int x, int y) {
const AlpPtr pAlp = ALPPTR(pCir);
unsigned char *memx = pAlp->HWCursorBits;
unsigned char *CursorBits = pAlp->CursorBits;
unsigned char mem[2*MAXCURSORSIZE];
unsigned char *p1, *p2;
int i, j, m, a, b;
Bool cur64 = (CURSORWIDTH == 64);
int shift = (cur64? 1 : 0);
if (x > 0) x = 0; else x = -x;
if (y > 0) y = 0; else y = -y;
a = ((y*CURSORWIDTH<<shift)+x)>>3;
b = x & 7;
/* Copy the skewed mask bits */
p1 = mem;
p2 = CursorBits + a;
for (i = 0; i < (CURSORSIZE << shift)-a-1; i++) {
*p1++ = (p2[0] << b) | (p2[1] >> (8-b));
p2++;
}
/* last mask byte */
*p1++ = (p2[0] << b);
/* Clear to end (bottom) of mask. */
for (i = i+1; i < (CURSORSIZE << shift); i++)
*p1++ = 0;
if (!cur64) {
/* Now copy the cursor bits */
/* p1 is already right */
p2 = CursorBits+CURSORSIZE+a;
for (i = 0; i < CURSORSIZE-a-1; i++) {
*p1++ = (p2[0] << b) | (p2[1] >> (8-b));
p2++;
}
/* last cursor byte */
*p1++ = (p2[0] << b);
}
/* Clear to end (bottom) of cursor. */
for (i = i+1; i < CURSORSIZE; i++)
*p1++ = 0;
/* Clear the right unused area of the mask
and cyrsor bits. */
p2 = mem + CURSORWIDTH/8 - (x>>3) - 1;
for (i = 0; i < 2*CURSORHEIGHT; i++) {
m = (-1)<<(x&7);
p1 = p2;
p2 += CURSORWIDTH/8;
for (j = x>>3; j >= 0; j--) {
*p1 &= m;
m = 0;
p1++;
}
}
memcpy(memx, mem, 2*CURSORSIZE);
}
static void
AlpSetCursorPosition(ScrnInfoPtr pScrn, int x, int y)
{
const CirPtr pCir = CIRPTR(pScrn);
const AlpPtr pAlp = ALPPTR(pCir);
vgaHWPtr hwp = VGAHWPTR(pScrn);
#if 0
#ifdef ALP_DEBUG
ErrorF("AlpSetCursorPosition %d %d\n", x, y);
#endif
#endif
if (x < 0 || y < 0) {
if (x+CURSORWIDTH <= 0 || y+CURSORHEIGHT <= 0) {
hwp->writeSeq(hwp, 0x12, pAlp->ModeReg.ExtVga[SR12] & ~0x01);
return;
}
AlpLoadSkewedCursor(pCir, x, y);
pCir->CursorIsSkewed = TRUE;
if (x < 0) x = 0;
if (y < 0) y = 0;
} else if (pCir->CursorIsSkewed) {
memcpy(pAlp->HWCursorBits, pAlp->CursorBits, 2*CURSORSIZE);
pCir->CursorIsSkewed = FALSE;
}
hwp->writeSeq(hwp, 0x12, pAlp->ModeReg.ExtVga[SR12]);
hwp->writeSeq(hwp, ((x << 5)|0x10)&0xff, x >> 3);
hwp->writeSeq(hwp, ((y << 5)|0x11)&0xff, y >> 3);
}
static void
AlpLoadCursorImage(ScrnInfoPtr pScrn, unsigned char *bits)
{
const AlpPtr pAlp = ALPPTR(CIRPTR(pScrn));
vgaHWPtr hwp = VGAHWPTR(pScrn);
#ifdef ALP_DEBUG
ErrorF("AlpLoadCursorImage\n");
#endif
pAlp->CursorBits = bits;
memcpy(pAlp->HWCursorBits, bits, 2*CURSORSIZE);
/* this should work for both 64 and 32 bit cursors */
pAlp->ModeReg.ExtVga[SR13] = 0x3f;
hwp->writeSeq(hwp, 0x13, pAlp->ModeReg.ExtVga[SR13]);
}
static void
AlpHideCursor(ScrnInfoPtr pScrn)
{
AlpPtr pAlp = ALPPTR(CIRPTR(pScrn));
vgaHWPtr hwp = VGAHWPTR(pScrn);
#ifdef ALP_DEBUG
ErrorF("AlpHideCursor\n");
#endif
pAlp->ModeReg.ExtVga[SR12] &= ~0x01;
hwp->writeSeq(hwp, 0x12, pAlp->ModeReg.ExtVga[SR12]);
}
static void
AlpShowCursor(ScrnInfoPtr pScrn)
{
AlpPtr pAlp = ALPPTR(CIRPTR(pScrn));
vgaHWPtr hwp = VGAHWPTR(pScrn);
#ifdef ALP_DEBUG
ErrorF("AlpShowCursor\n");
#endif
pAlp->ModeReg.ExtVga[SR12] |= 0x01;
hwp->writeSeq(hwp, 0x12, pAlp->ModeReg.ExtVga[SR12]);
}
static Bool
AlpUseHWCursor(ScreenPtr pScreen, CursorPtr pCurs)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
#ifdef ALP_DEBUG
ErrorF("AlpUseHWCursor\n");
#endif
if (pScrn->bitsPerPixel < 8)
return FALSE;
return TRUE;
}
Bool
AlpHWCursorInit(ScreenPtr pScreen, int size)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
const CirPtr pCir = CIRPTR(pScrn);
const AlpPtr pAlp = ALPPTR(pCir);
xf86CursorInfoPtr infoPtr;
#ifdef ALP_DEBUG
ErrorF("AlpHWCursorInit\n");
#endif
if (!size) return FALSE;
infoPtr = xf86CreateCursorInfoRec();
if (!infoPtr) return FALSE;
pCir->CursorInfoRec = infoPtr;
pCir->CursorIsSkewed = FALSE;
pAlp->CursorBits = NULL;
if (size == 64)
CURSORWIDTH = CURSORHEIGHT = 64;
else
CURSORWIDTH = CURSORHEIGHT = 32;
pAlp->HWCursorBits = pCir->FbBase + 1024*pScrn->videoRam - 2*CURSORSIZE;
infoPtr->MaxWidth = CURSORWIDTH;
infoPtr->MaxHeight = CURSORHEIGHT;
if (CURSORWIDTH == 64)
infoPtr->Flags =
#if X_BYTE_ORDER == X_LITTLE_ENDIAN
HARDWARE_CURSOR_BIT_ORDER_MSBFIRST |
#endif
HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_64 |
HARDWARE_CURSOR_TRUECOLOR_AT_8BPP;
else
infoPtr->Flags =
#if X_BYTE_ORDER == X_LITTLE_ENDIAN
HARDWARE_CURSOR_BIT_ORDER_MSBFIRST |
#endif
HARDWARE_CURSOR_TRUECOLOR_AT_8BPP;
infoPtr->SetCursorColors = AlpSetCursorColors;
infoPtr->SetCursorPosition = AlpSetCursorPosition;
infoPtr->LoadCursorImage = AlpLoadCursorImage;
infoPtr->HideCursor = AlpHideCursor;
infoPtr->ShowCursor = AlpShowCursor;
infoPtr->UseHWCursor = AlpUseHWCursor;
#ifdef ALP_DEBUG
ErrorF("AlpHWCursorInit before xf86InitCursor\n");
#endif
xf86DrvMsg(pScrn->scrnIndex,X_INFO,"Hardware cursor: %ix%i\n",
CURSORWIDTH,CURSORHEIGHT);
return(xf86InitCursor(pScreen, infoPtr));
}
|
