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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [video/] [atafb_iplan2p2.c] - Blame information for rev 62

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/*
 *  linux/drivers/video/iplan2p2.c -- Low level frame buffer operations for
 *                                    interleaved bitplanes à la Atari (2
 *                                    planes, 2 bytes interleave)
 *
 *      Created 5 Apr 1997 by Geert Uytterhoeven
 *
 *  This file is subject to the terms and conditions of the GNU General Public
 *  License.  See the file COPYING in the main directory of this archive for
 *  more details.
 */
 
#include <linux/module.h>
#include <linux/string.h>
#include <linux/fb.h>
 
#include <asm/setup.h>
 
#include "atafb.h"
 
#define BPL     2
#include "atafb_utils.h"
 
void atafb_iplan2p2_copyarea(struct fb_info *info, u_long next_line,
                             int sy, int sx, int dy, int dx,
                             int height, int width)
{
        /*  bmove() has to distinguish two major cases: If both, source and
         *  destination, start at even addresses or both are at odd
         *  addresses, just the first odd and last even column (if present)
         *  require special treatment (memmove_col()). The rest between
         *  then can be copied by normal operations, because all adjacent
         *  bytes are affected and are to be stored in the same order.
         *    The pathological case is when the move should go from an odd
         *  address to an even or vice versa. Since the bytes in the plane
         *  words must be assembled in new order, it seems wisest to make
         *  all movements by memmove_col().
         */
 
        u8 *src, *dst;
        u32 *s, *d;
        int w, l , i, j;
        u_int colsize;
        u_int upwards = (dy < sy) || (dy == sy && dx < sx);
 
        colsize = height;
        if (!((sx ^ dx) & 15)) {
                /* odd->odd or even->even */
 
                if (upwards) {
                        src = (u8 *)info->screen_base + sy * next_line + (sx & ~15) / (8 / BPL);
                        dst = (u8 *)info->screen_base + dy * next_line + (dx & ~15) / (8 / BPL);
                        if (sx & 15) {
                                memmove32_col(dst, src, 0xff00ff, height, next_line - BPL * 2);
                                src += BPL * 2;
                                dst += BPL * 2;
                                width -= 8;
                        }
                        w = width >> 4;
                        if (w) {
                                s = (u32 *)src;
                                d = (u32 *)dst;
                                w *= BPL / 2;
                                l = next_line - w * 4;
                                for (j = height; j > 0; j--) {
                                        for (i = w; i > 0; i--)
                                                *d++ = *s++;
                                        s = (u32 *)((u8 *)s + l);
                                        d = (u32 *)((u8 *)d + l);
                                }
                        }
                        if (width & 15)
                                memmove32_col(dst + width / (8 / BPL), src + width / (8 / BPL),
                                              0xff00ff00, height, next_line - BPL * 2);
                } else {
                        src = (u8 *)info->screen_base + (sy - 1) * next_line + ((sx + width + 8) & ~15) / (8 / BPL);
                        dst = (u8 *)info->screen_base + (dy - 1) * next_line + ((dx + width + 8) & ~15) / (8 / BPL);
 
                        if ((sx + width) & 15) {
                                src -= BPL * 2;
                                dst -= BPL * 2;
                                memmove32_col(dst, src, 0xff00ff00, colsize, -next_line - BPL * 2);
                                width -= 8;
                        }
                        w = width >> 4;
                        if (w) {
                                s = (u32 *)src;
                                d = (u32 *)dst;
                                w *= BPL / 2;
                                l = next_line - w * 4;
                                for (j = height; j > 0; j--) {
                                        for (i = w; i > 0; i--)
                                                *--d = *--s;
                                        s = (u32 *)((u8 *)s - l);
                                        d = (u32 *)((u8 *)d - l);
                                }
                        }
                        if (sx & 15)
                                memmove32_col(dst - (width - 16) / (8 / BPL),
                                              src - (width - 16) / (8 / BPL),
                                              0xff00ff, colsize, -next_line - BPL * 2);
                }
        } else {
                /* odd->even or even->odd */
                if (upwards) {
                        u32 *src32, *dst32;
                        u32 pval[4], v, v1, mask;
                        int i, j, w, f;
 
                        src = (u8 *)info->screen_base + sy * next_line + (sx & ~15) / (8 / BPL);
                        dst = (u8 *)info->screen_base + dy * next_line + (dx & ~15) / (8 / BPL);
 
                        mask = 0xff00ff00;
                        f = 0;
                        w = width;
                        if (sx & 15) {
                                f = 1;
                                w += 8;
                        }
                        if ((sx + width) & 15)
                                f |= 2;
                        w >>= 4;
                        for (i = height; i; i--) {
                                src32 = (u32 *)src;
                                dst32 = (u32 *)dst;
 
                                if (f & 1) {
                                        pval[0] = (*src32++ << 8) & mask;
                                } else {
                                        pval[0] = dst32[0] & mask;
                                }
 
                                for (j = w; j > 0; j--) {
                                        v = *src32++;
                                        v1 = v & mask;
                                        *dst32++ = pval[0] | (v1 >> 8);
                                        pval[0] = (v ^ v1) << 8;
                                }
 
                                if (f & 2) {
                                        dst32[0] = (dst32[0] & mask) | pval[0];
                                }
 
                                src += next_line;
                                dst += next_line;
                        }
                } else {
                        u32 *src32, *dst32;
                        u32 pval[4], v, v1, mask;
                        int i, j, w, f;
 
                        src = (u8 *)info->screen_base + (sy - 1) * next_line + ((sx + width + 8) & ~15) / (8 / BPL);
                        dst = (u8 *)info->screen_base + (dy - 1) * next_line + ((dx + width + 8) & ~15) / (8 / BPL);
 
                        mask = 0xff00ff;
                        f = 0;
                        w = width;
                        if ((dx + width) & 15)
                                f = 1;
                        if (sx & 15) {
                                f |= 2;
                                w += 8;
                        }
                        w >>= 4;
                        for (i = height; i; i--) {
                                src32 = (u32 *)src;
                                dst32 = (u32 *)dst;
 
                                if (f & 1) {
                                        pval[0] = dst32[-1] & mask;
                                } else {
                                        pval[0] = (*--src32 >> 8) & mask;
                                }
 
                                for (j = w; j > 0; j--) {
                                        v = *--src32;
                                        v1 = v & mask;
                                        *--dst32 = pval[0] | (v1 << 8);
                                        pval[0] = (v ^ v1) >> 8;
                                }
 
                                if (!(f & 2)) {
                                        dst32[-1] = (dst32[-1] & mask) | pval[0];
                                }
 
                                src -= next_line;
                                dst -= next_line;
                        }
                }
        }
}
 
void atafb_iplan2p2_fillrect(struct fb_info *info, u_long next_line, u32 color,
                             int sy, int sx, int height, int width)
{
        u32 *dest;
        int rows, i;
        u32 cval[4];
 
        dest = (u32 *)(info->screen_base + sy * next_line + (sx & ~15) / (8 / BPL));
        if (sx & 15) {
                u8 *dest8 = (u8 *)dest + 1;
 
                expand8_col2mask(color, cval);
 
                for (i = height; i; i--) {
                        fill8_col(dest8, cval);
                        dest8 += next_line;
                }
                dest += BPL / 2;
                width -= 8;
        }
 
        expand16_col2mask(color, cval);
        rows = width >> 4;
        if (rows) {
                u32 *d = dest;
                u32 off = next_line - rows * BPL * 2;
                for (i = height; i; i--) {
                        d = fill16_col(d, rows, cval);
                        d = (u32 *)((long)d + off);
                }
                dest += rows * BPL / 2;
                width &= 15;
        }
 
        if (width) {
                u8 *dest8 = (u8 *)dest;
 
                expand8_col2mask(color, cval);
 
                for (i = height; i; i--) {
                        fill8_col(dest8, cval);
                        dest8 += next_line;
                }
        }
}
 
void atafb_iplan2p2_linefill(struct fb_info *info, u_long next_line,
                             int dy, int dx, u32 width,
                             const u8 *data, u32 bgcolor, u32 fgcolor)
{
        u32 *dest;
        const u16 *data16;
        int rows;
        u32 fgm[4], bgm[4], m;
 
        dest = (u32 *)(info->screen_base + dy * next_line + (dx & ~15) / (8 / BPL));
        if (dx & 15) {
                fill8_2col((u8 *)dest + 1, fgcolor, bgcolor, *data++);
                dest += BPL / 2;
                width -= 8;
        }
 
        if (width >= 16) {
                data16 = (const u16 *)data;
                expand16_2col2mask(fgcolor, bgcolor, fgm, bgm);
 
                for (rows = width / 16; rows; rows--) {
                        u16 d = *data16++;
                        m = d | ((u32)d << 16);
                        *dest++ = (m & fgm[0]) ^ bgm[0];
                }
 
                data = (const u8 *)data16;
                width &= 15;
        }
 
        if (width)
                fill8_2col((u8 *)dest, fgcolor, bgcolor, *data);
}
 
#ifdef MODULE
MODULE_LICENSE("GPL");
 
int init_module(void)
{
        return 0;
}
 
void cleanup_module(void)
{
}
#endif /* MODULE */
 
 
    /*
     *  Visible symbols for modules
     */
 
EXPORT_SYMBOL(atafb_iplan2p2_copyarea);
EXPORT_SYMBOL(atafb_iplan2p2_fillrect);
EXPORT_SYMBOL(atafb_iplan2p2_linefill);

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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [video/] [atafb_iplan2p2.c] - Blame information for rev 62

Line No.	Rev	Author	Line
1	62	marcus.erl	`/*`
2			`* linux/drivers/video/iplan2p2.c -- Low level frame buffer operations for`
3			`* interleaved bitplanes à la Atari (2`
4			`* planes, 2 bytes interleave)`
5			`*`
6			`* Created 5 Apr 1997 by Geert Uytterhoeven`
7			`*`
8			`* This file is subject to the terms and conditions of the GNU General Public`
9			`* License. See the file COPYING in the main directory of this archive for`
10			`* more details.`
11			`*/`
12
13			`#include <linux/module.h>`
14			`#include <linux/string.h>`
15			`#include <linux/fb.h>`
16
17			`#include <asm/setup.h>`
18
19			`#include "atafb.h"`
20
21			`#define BPL 2`
22			`#include "atafb_utils.h"`
23
24			`void atafb_iplan2p2_copyarea(struct fb_info *info, u_long next_line,`
25			`int sy, int sx, int dy, int dx,`
26			`int height, int width)`
27			`{`
28			`/* bmove() has to distinguish two major cases: If both, source and`
29			`* destination, start at even addresses or both are at odd`
30			`* addresses, just the first odd and last even column (if present)`
31			`* require special treatment (memmove_col()). The rest between`
32			`* then can be copied by normal operations, because all adjacent`
33			`* bytes are affected and are to be stored in the same order.`
34			`* The pathological case is when the move should go from an odd`
35			`* address to an even or vice versa. Since the bytes in the plane`
36			`* words must be assembled in new order, it seems wisest to make`
37			`* all movements by memmove_col().`
38			`*/`
39
40			`u8 src, dst;`
41			`u32 s, d;`
42			`int w, l , i, j;`
43			`u_int colsize;`
44			`u_int upwards = (dy < sy) \|\| (dy == sy && dx < sx);`
45
46			`colsize = height;`
47			`if (!((sx ^ dx) & 15)) {`
48			`/* odd->odd or even->even */`
49
50			`if (upwards) {`
51			`src = (u8 )info->screen_base + sy next_line + (sx & ~15) / (8 / BPL);`
52			`dst = (u8 )info->screen_base + dy next_line + (dx & ~15) / (8 / BPL);`
53			`if (sx & 15) {`
54			`memmove32_col(dst, src, 0xff00ff, height, next_line - BPL * 2);`
55			`src += BPL * 2;`
56			`dst += BPL * 2;`
57			`width -= 8;`
58			`}`
59			`w = width >> 4;`
60			`if (w) {`
61			`s = (u32 *)src;`
62			`d = (u32 *)dst;`
63			`w *= BPL / 2;`
64			`l = next_line - w * 4;`
65			`for (j = height; j > 0; j--) {`
66			`for (i = w; i > 0; i--)`
67			`d++ = s++;`
68			`s = (u32 )((u8 )s + l);`
69			`d = (u32 )((u8 )d + l);`
70			`}`
71			`}`
72			`if (width & 15)`
73			`memmove32_col(dst + width / (8 / BPL), src + width / (8 / BPL),`
74			`0xff00ff00, height, next_line - BPL * 2);`
75			`} else {`
76			`src = (u8 )info->screen_base + (sy - 1) next_line + ((sx + width + 8) & ~15) / (8 / BPL);`
77			`dst = (u8 )info->screen_base + (dy - 1) next_line + ((dx + width + 8) & ~15) / (8 / BPL);`
78
79			`if ((sx + width) & 15) {`
80			`src -= BPL * 2;`
81			`dst -= BPL * 2;`
82			`memmove32_col(dst, src, 0xff00ff00, colsize, -next_line - BPL * 2);`
83			`width -= 8;`
84			`}`
85			`w = width >> 4;`
86			`if (w) {`
87			`s = (u32 *)src;`
88			`d = (u32 *)dst;`
89			`w *= BPL / 2;`
90			`l = next_line - w * 4;`
91			`for (j = height; j > 0; j--) {`
92			`for (i = w; i > 0; i--)`
93			`--d = --s;`
94			`s = (u32 )((u8 )s - l);`
95			`d = (u32 )((u8 )d - l);`
96			`}`
97			`}`
98			`if (sx & 15)`
99			`memmove32_col(dst - (width - 16) / (8 / BPL),`
100			`src - (width - 16) / (8 / BPL),`
101			`0xff00ff, colsize, -next_line - BPL * 2);`
102			`}`
103			`} else {`
104			`/* odd->even or even->odd */`
105			`if (upwards) {`
106			`u32 src32, dst32;`
107			`u32 pval[4], v, v1, mask;`
108			`int i, j, w, f;`
109
110			`src = (u8 )info->screen_base + sy next_line + (sx & ~15) / (8 / BPL);`
111			`dst = (u8 )info->screen_base + dy next_line + (dx & ~15) / (8 / BPL);`
112
113			`mask = 0xff00ff00;`
114			`f = 0;`
115			`w = width;`
116			`if (sx & 15) {`
117			`f = 1;`
118			`w += 8;`
119			`}`
120			`if ((sx + width) & 15)`
121			`f \|= 2;`
122			`w >>= 4;`
123			`for (i = height; i; i--) {`
124			`src32 = (u32 *)src;`
125			`dst32 = (u32 *)dst;`
126
127			`if (f & 1) {`
128			`pval[0] = (*src32++ << 8) & mask;`
129			`} else {`
130			`pval[0] = dst32[0] & mask;`
131			`}`
132
133			`for (j = w; j > 0; j--) {`
134			`v = *src32++;`
135			`v1 = v & mask;`
136			`*dst32++ = pval[0] \| (v1 >> 8);`
137			`pval[0] = (v ^ v1) << 8;`
138			`}`
139
140			`if (f & 2) {`
141			`dst32[0] = (dst32[0] & mask) \| pval[0];`
142			`}`
143
144			`src += next_line;`
145			`dst += next_line;`
146			`}`
147			`} else {`
148			`u32 src32, dst32;`
149			`u32 pval[4], v, v1, mask;`
150			`int i, j, w, f;`
151
152			`src = (u8 )info->screen_base + (sy - 1) next_line + ((sx + width + 8) & ~15) / (8 / BPL);`
153			`dst = (u8 )info->screen_base + (dy - 1) next_line + ((dx + width + 8) & ~15) / (8 / BPL);`
154
155			`mask = 0xff00ff;`
156			`f = 0;`
157			`w = width;`
158			`if ((dx + width) & 15)`
159			`f = 1;`
160			`if (sx & 15) {`
161			`f \|= 2;`
162			`w += 8;`
163			`}`
164			`w >>= 4;`
165			`for (i = height; i; i--) {`
166			`src32 = (u32 *)src;`
167			`dst32 = (u32 *)dst;`
168
169			`if (f & 1) {`
170			`pval[0] = dst32[-1] & mask;`
171			`} else {`
172			`pval[0] = (*--src32 >> 8) & mask;`
173			`}`
174
175			`for (j = w; j > 0; j--) {`
176			`v = *--src32;`
177			`v1 = v & mask;`
178			`*--dst32 = pval[0] \| (v1 << 8);`
179			`pval[0] = (v ^ v1) >> 8;`
180			`}`
181
182			`if (!(f & 2)) {`
183			`dst32[-1] = (dst32[-1] & mask) \| pval[0];`
184			`}`
185
186			`src -= next_line;`
187			`dst -= next_line;`
188			`}`
189			`}`
190			`}`
191			`}`
192
193			`void atafb_iplan2p2_fillrect(struct fb_info *info, u_long next_line, u32 color,`
194			`int sy, int sx, int height, int width)`
195			`{`
196			`u32 *dest;`
197			`int rows, i;`
198			`u32 cval[4];`
199
200			`dest = (u32 )(info->screen_base + sy next_line + (sx & ~15) / (8 / BPL));`
201			`if (sx & 15) {`
202			`u8 dest8 = (u8 )dest + 1;`
203
204			`expand8_col2mask(color, cval);`
205
206			`for (i = height; i; i--) {`
207			`fill8_col(dest8, cval);`
208			`dest8 += next_line;`
209			`}`
210			`dest += BPL / 2;`
211			`width -= 8;`
212			`}`
213
214			`expand16_col2mask(color, cval);`
215			`rows = width >> 4;`
216			`if (rows) {`
217			`u32 *d = dest;`
218			`u32 off = next_line - rows * BPL * 2;`
219			`for (i = height; i; i--) {`
220			`d = fill16_col(d, rows, cval);`
221			`d = (u32 *)((long)d + off);`
222			`}`
223			`dest += rows * BPL / 2;`
224			`width &= 15;`
225			`}`
226
227			`if (width) {`
228			`u8 dest8 = (u8 )dest;`
229
230			`expand8_col2mask(color, cval);`
231
232			`for (i = height; i; i--) {`
233			`fill8_col(dest8, cval);`
234			`dest8 += next_line;`
235			`}`
236			`}`
237			`}`
238
239			`void atafb_iplan2p2_linefill(struct fb_info *info, u_long next_line,`
240			`int dy, int dx, u32 width,`
241			`const u8 *data, u32 bgcolor, u32 fgcolor)`
242			`{`
243			`u32 *dest;`
244			`const u16 *data16;`
245			`int rows;`
246			`u32 fgm[4], bgm[4], m;`
247
248			`dest = (u32 )(info->screen_base + dy next_line + (dx & ~15) / (8 / BPL));`
249			`if (dx & 15) {`
250			`fill8_2col((u8 )dest + 1, fgcolor, bgcolor, data++);`
251			`dest += BPL / 2;`
252			`width -= 8;`
253			`}`
254
255			`if (width >= 16) {`
256			`data16 = (const u16 *)data;`
257			`expand16_2col2mask(fgcolor, bgcolor, fgm, bgm);`
258
259			`for (rows = width / 16; rows; rows--) {`
260			`u16 d = *data16++;`
261			`m = d \| ((u32)d << 16);`
262			`*dest++ = (m & fgm[0]) ^ bgm[0];`
263			`}`
264
265			`data = (const u8 *)data16;`
266			`width &= 15;`
267			`}`
268
269			`if (width)`
270			`fill8_2col((u8 )dest, fgcolor, bgcolor, data);`
271			`}`
272
273			`#ifdef MODULE`
274			`MODULE_LICENSE("GPL");`
275
276			`int init_module(void)`
277			`{`
278			`return 0;`
279			`}`
280
281			`void cleanup_module(void)`
282			`{`
283			`}`
284			`#endif /* MODULE */`
285
286
287			`/*`
288			`* Visible symbols for modules`
289			`*/`
290
291			`EXPORT_SYMBOL(atafb_iplan2p2_copyarea);`
292			`EXPORT_SYMBOL(atafb_iplan2p2_fillrect);`
293			`EXPORT_SYMBOL(atafb_iplan2p2_linefill);`