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Viewing changes to drivers/staging/xgifb/XGI_accel.c

  • Committer: Bazaar Package Importer
  • Author(s): Paolo Pisati
  • Date: 2011-06-29 15:23:51 UTC
  • mfrom: (26.1.1 natty-proposed)
  • Revision ID: james.westby@ubuntu.com-20110629152351-xs96tm303d95rpbk
Tags: 3.0.0-1200.2
* Rebased against 3.0.0-6.7
* BSP from TI based on 3.0.0

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drivers/staging/xgifb/XGI_accel.c
1
 
/*
2
 
 * XGI 300/630/730/540/315/550/650/740 frame buffer driver
3
 
 * for Linux kernels 2.4.x and 2.5.x
4
 
 *
5
 
 * 2D acceleration part
6
 
 *
7
 
 * Based on the X driver's XGI300_accel.c which is
8
 
 *     Copyright Xavier Ducoin <x.ducoin@lectra.com>
9
 
 *     Copyright 2002 by Thomas Winischhofer, Vienna, Austria
10
 
 * and XGI310_accel.c which is
11
 
 *     Copyright 2002 by Thomas Winischhofer, Vienna, Austria
12
 
 *
13
 
 * Author: Thomas Winischhofer <thomas@winischhofer.net>
14
 
 *                      (see http://www.winischhofer.net/
15
 
 *                      for more information and updates)
16
 
 */
17
 
 
18
 
//#include <linux/config.h>
19
 
#include <linux/version.h>
20
 
#include <linux/module.h>
21
 
#include <linux/kernel.h>
22
 
#include <linux/errno.h>
23
 
#include <linux/string.h>
24
 
#include <linux/mm.h>
25
 
#include <linux/tty.h>
26
 
#include <linux/slab.h>
27
 
#include <linux/delay.h>
28
 
#include <linux/fb.h>
29
 
#include <linux/console.h>
30
 
#include <linux/selection.h>
31
 
#include <linux/ioport.h>
32
 
#include <linux/init.h>
33
 
#include <linux/pci.h>
34
 
#include <linux/vt_kern.h>
35
 
#include <linux/capability.h>
36
 
#include <linux/fs.h>
37
 
#include <linux/agp_backend.h>
38
 
 
39
 
#include <linux/types.h>
40
 
#include <asm/io.h>
41
 
 
42
 
#ifdef CONFIG_MTRR
43
 
#include <asm/mtrr.h>
44
 
#endif
45
 
 
46
 
#include "vgatypes.h"
47
 
#include "vb_struct.h"
48
 
#include "XGIfb.h"
49
 
#include "XGI_accel.h"
50
 
 
51
 
static const int XGIALUConv[] =
52
 
{
53
 
    0x00,       /* dest = 0;            0,      GXclear,        0 */
54
 
    0x88,       /* dest &= src;         DSa,    GXand,          0x1 */
55
 
    0x44,       /* dest = src & ~dest;  SDna,   GXandReverse,   0x2 */
56
 
    0xCC,       /* dest = src;          S,      GXcopy,         0x3 */
57
 
    0x22,       /* dest &= ~src;        DSna,   GXandInverted,  0x4 */
58
 
    0xAA,       /* dest = dest;         D,      GXnoop,         0x5 */
59
 
    0x66,       /* dest = ^src;         DSx,    GXxor,          0x6 */
60
 
    0xEE,       /* dest |= src;         DSo,    GXor,           0x7 */
61
 
    0x11,       /* dest = ~src & ~dest; DSon,   GXnor,          0x8 */
62
 
    0x99,       /* dest ^= ~src ;       DSxn,   GXequiv,        0x9 */
63
 
    0x55,       /* dest = ~dest;        Dn,     GXInvert,       0xA */
64
 
    0xDD,       /* dest = src|~dest ;   SDno,   GXorReverse,    0xB */
65
 
    0x33,       /* dest = ~src;         Sn,     GXcopyInverted, 0xC */
66
 
    0xBB,       /* dest |= ~src;        DSno,   GXorInverted,   0xD */
67
 
    0x77,       /* dest = ~src|~dest;   DSan,   GXnand,         0xE */
68
 
    0xFF,       /* dest = 0xFF;         1,      GXset,          0xF */
69
 
};
70
 
/* same ROP but with Pattern as Source */
71
 
static const int XGIPatALUConv[] =
72
 
{
73
 
    0x00,       /* dest = 0;            0,      GXclear,        0 */
74
 
    0xA0,       /* dest &= src;         DPa,    GXand,          0x1 */
75
 
    0x50,       /* dest = src & ~dest;  PDna,   GXandReverse,   0x2 */
76
 
    0xF0,       /* dest = src;          P,      GXcopy,         0x3 */
77
 
    0x0A,       /* dest &= ~src;        DPna,   GXandInverted,  0x4 */
78
 
    0xAA,       /* dest = dest;         D,      GXnoop,         0x5 */
79
 
    0x5A,       /* dest = ^src;         DPx,    GXxor,          0x6 */
80
 
    0xFA,       /* dest |= src;         DPo,    GXor,           0x7 */
81
 
    0x05,       /* dest = ~src & ~dest; DPon,   GXnor,          0x8 */
82
 
    0xA5,       /* dest ^= ~src ;       DPxn,   GXequiv,        0x9 */
83
 
    0x55,       /* dest = ~dest;        Dn,     GXInvert,       0xA */
84
 
    0xF5,       /* dest = src|~dest ;   PDno,   GXorReverse,    0xB */
85
 
    0x0F,       /* dest = ~src;         Pn,     GXcopyInverted, 0xC */
86
 
    0xAF,       /* dest |= ~src;        DPno,   GXorInverted,   0xD */
87
 
    0x5F,       /* dest = ~src|~dest;   DPan,   GXnand,         0xE */
88
 
    0xFF,       /* dest = 0xFF;         1,      GXset,          0xF */
89
 
};
90
 
 
91
 
static const unsigned char myrops[] = {
92
 
        3, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
93
 
   };
94
 
 
95
 
/* 300 series */
96
 
static void
97
 
XGI310Sync(void)
98
 
{
99
 
        XGI310Idle
100
 
}
101
 
 
102
 
/* 310/325 series ------------------------------------------------ */
103
 
 
104
 
static void
105
 
XGI310SetupForScreenToScreenCopy(int xdir, int ydir, int rop,
106
 
                                unsigned int planemask, int trans_color)
107
 
{
108
 
        XGI310SetupDSTColorDepth(xgi_video_info.DstColor);
109
 
        XGI310SetupSRCPitch(xgi_video_info.video_linelength)
110
 
        XGI310SetupDSTRect(xgi_video_info.video_linelength, 0xFFF)
111
 
        if (trans_color != -1) {
112
 
                XGI310SetupROP(0x0A)
113
 
                XGI310SetupSRCTrans(trans_color)
114
 
                XGI310SetupCMDFlag(TRANSPARENT_BITBLT)
115
 
        } else {
116
 
                XGI310SetupROP(XGIALUConv[rop])
117
 
                /* Set command - not needed, both 0 */
118
 
                /* XGISetupCMDFlag(BITBLT | SRCVIDEO) */
119
 
        }
120
 
        XGI310SetupCMDFlag(xgi_video_info.XGI310_AccelDepth)
121
 
        /* TW: The 310/325 series is smart enough to know the direction */
122
 
}
123
 
 
124
 
static void
125
 
XGI310SubsequentScreenToScreenCopy(int src_x, int src_y, int dst_x, int dst_y,
126
 
                                int width, int height)
127
 
{
128
 
        long srcbase, dstbase;
129
 
        int mymin, mymax;
130
 
 
131
 
        srcbase = dstbase = 0;
132
 
        mymin = min(src_y, dst_y);
133
 
        mymax = max(src_y, dst_y);
134
 
 
135
 
        /* Although the chip knows the direction to use
136
 
         * if the source and destination areas overlap,
137
 
         * that logic fails if we fiddle with the bitmap
138
 
         * addresses. Therefore, we check if the source
139
 
         * and destination blitting areas overlap and
140
 
         * adapt the bitmap addresses synchronously
141
 
         * if the coordinates exceed the valid range.
142
 
         * The the areas do not overlap, we do our
143
 
         * normal check.
144
 
         */
145
 
        if((mymax - mymin) < height) {
146
 
           if((src_y >= 2048) || (dst_y >= 2048)) {
147
 
              srcbase = xgi_video_info.video_linelength * mymin;
148
 
              dstbase = xgi_video_info.video_linelength * mymin;
149
 
              src_y -= mymin;
150
 
              dst_y -= mymin;
151
 
           }
152
 
        } else {
153
 
           if(src_y >= 2048) {
154
 
              srcbase = xgi_video_info.video_linelength * src_y;
155
 
              src_y = 0;
156
 
           }
157
 
           if(dst_y >= 2048) {
158
 
              dstbase = xgi_video_info.video_linelength * dst_y;
159
 
              dst_y = 0;
160
 
           }
161
 
        }
162
 
 
163
 
        XGI310SetupSRCBase(srcbase);
164
 
        XGI310SetupDSTBase(dstbase);
165
 
        XGI310SetupRect(width, height)
166
 
        XGI310SetupSRCXY(src_x, src_y)
167
 
        XGI310SetupDSTXY(dst_x, dst_y)
168
 
        XGI310DoCMD
169
 
}
170
 
 
171
 
static void
172
 
XGI310SetupForSolidFill(int color, int rop, unsigned int planemask)
173
 
{
174
 
        XGI310SetupPATFG(color)
175
 
        XGI310SetupDSTRect(xgi_video_info.video_linelength, 0xFFF)
176
 
        XGI310SetupDSTColorDepth(xgi_video_info.DstColor);
177
 
        XGI310SetupROP(XGIPatALUConv[rop])
178
 
        XGI310SetupCMDFlag(PATFG | xgi_video_info.XGI310_AccelDepth)
179
 
}
180
 
 
181
 
static void
182
 
XGI310SubsequentSolidFillRect(int x, int y, int w, int h)
183
 
{
184
 
        long dstbase;
185
 
 
186
 
        dstbase = 0;
187
 
        if(y >= 2048) {
188
 
                dstbase = xgi_video_info.video_linelength * y;
189
 
                y = 0;
190
 
        }
191
 
        XGI310SetupDSTBase(dstbase)
192
 
        XGI310SetupDSTXY(x,y)
193
 
        XGI310SetupRect(w,h)
194
 
        XGI310SetupCMDFlag(BITBLT)
195
 
        XGI310DoCMD
196
 
}
197
 
 
198
 
/* --------------------------------------------------------------------- */
199
 
 
200
 
/* The exported routines */
201
 
 
202
 
int XGIfb_initaccel(void)
203
 
{
204
 
#ifdef XGIFB_USE_SPINLOCKS
205
 
    spin_lock_init(&xgi_video_info.lockaccel);
206
 
#endif
207
 
    return(0);
208
 
}
209
 
 
210
 
void XGIfb_syncaccel(void)
211
 
{
212
 
 
213
 
    XGI310Sync();
214
 
 
215
 
}
216
 
 
217
 
int fbcon_XGI_sync(struct fb_info *info)
218
 
{
219
 
    if(!XGIfb_accel) return 0;
220
 
    CRITFLAGS
221
 
 
222
 
    XGI310Sync();
223
 
 
224
 
   CRITEND
225
 
   return 0;
226
 
}
227
 
 
228
 
void fbcon_XGI_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
229
 
{
230
 
   int col=0;
231
 
   CRITFLAGS
232
 
 
233
 
 
234
 
   if(!rect->width || !rect->height)
235
 
        return;
236
 
 
237
 
   if(!XGIfb_accel) {
238
 
        cfb_fillrect(info, rect);
239
 
        return;
240
 
   }
241
 
 
242
 
   switch(info->var.bits_per_pixel) {
243
 
                case 8: col = rect->color;
244
 
                        break;
245
 
                case 16: col = ((u32 *)(info->pseudo_palette))[rect->color];
246
 
                         break;
247
 
                case 32: col = ((u32 *)(info->pseudo_palette))[rect->color];
248
 
                         break;
249
 
        }
250
 
 
251
 
 
252
 
           CRITBEGIN
253
 
           XGI310SetupForSolidFill(col, myrops[rect->rop], 0);
254
 
           XGI310SubsequentSolidFillRect(rect->dx, rect->dy, rect->width, rect->height);
255
 
           CRITEND
256
 
           XGI310Sync();
257
 
 
258
 
 
259
 
}
260
 
 
261
 
void fbcon_XGI_copyarea(struct fb_info *info, const struct fb_copyarea *area)
262
 
{
263
 
   int xdir, ydir;
264
 
   CRITFLAGS
265
 
 
266
 
 
267
 
   if(!XGIfb_accel) {
268
 
        cfb_copyarea(info, area);
269
 
        return;
270
 
   }
271
 
 
272
 
   if(!area->width || !area->height)
273
 
        return;
274
 
 
275
 
   if(area->sx < area->dx) xdir = 0;
276
 
   else                    xdir = 1;
277
 
   if(area->sy < area->dy) ydir = 0;
278
 
   else                    ydir = 1;
279
 
 
280
 
      CRITBEGIN
281
 
      XGI310SetupForScreenToScreenCopy(xdir, ydir, 3, 0, -1);
282
 
      XGI310SubsequentScreenToScreenCopy(area->sx, area->sy, area->dx, area->dy, area->width, area->height);
283
 
      CRITEND
284
 
      XGI310Sync();
285
 
 
286
 
}
287
 
 
288
 
 
289