URL https://opencores.org/ocsvn/or1k/or1k/trunk

Subversion Repositories or1k

[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [video/] [fbcon-ilbm.c] - Blame information for rev 1765

Details | Compare with Previous | View Log


/*
 *  linux/drivers/video/ilbm.c -- Low level frame buffer operations for
 *                                interleaved bitplanes � la Amiga
 *
 *      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/tty.h>
#include <linux/console.h>
#include <linux/string.h>
#include <linux/fb.h>
 
#include <video/fbcon.h>
#include <video/fbcon-ilbm.h>
 
 
    /*
     *  Interleaved bitplanes � la Amiga
     *
     *  This code heavily relies on the fact that
     *
     *      next_line == interleave == next_plane*bits_per_pixel
     *
     *  But maybe it can be merged with the code for normal bitplanes without
     *  much performance loss?
     */
 
void fbcon_ilbm_setup(struct display *p)
{
    if (p->line_length) {
        p->next_line = p->line_length*p->var.bits_per_pixel;
        p->next_plane = p->line_length;
    } else {
        p->next_line = p->type_aux;
        p->next_plane = p->type_aux/p->var.bits_per_pixel;
    }
}
 
void fbcon_ilbm_bmove(struct display *p, int sy, int sx, int dy, int dx,
                      int height, int width)
{
    if (sx == 0 && dx == 0 && width == p->next_plane)
        fb_memmove(p->screen_base+dy*fontheight(p)*p->next_line,
                  p->screen_base+sy*fontheight(p)*p->next_line,
                  height*fontheight(p)*p->next_line);
    else {
        u8 *src, *dest;
        u_int i;
 
        if (dy <= sy) {
            src = p->screen_base+sy*fontheight(p)*p->next_line+sx;
            dest = p->screen_base+dy*fontheight(p)*p->next_line+dx;
            for (i = p->var.bits_per_pixel*height*fontheight(p); i--;) {
                fb_memmove(dest, src, width);
                src += p->next_plane;
                dest += p->next_plane;
            }
        } else {
            src = p->screen_base+(sy+height)*fontheight(p)*p->next_line+sx;
            dest = p->screen_base+(dy+height)*fontheight(p)*p->next_line+dx;
            for (i = p->var.bits_per_pixel*height*fontheight(p); i--;) {
                src -= p->next_plane;
                dest -= p->next_plane;
                fb_memmove(dest, src, width);
            }
        }
    }
}
 
void fbcon_ilbm_clear(struct vc_data *conp, struct display *p, int sy, int sx,
                      int height, int width)
{
    u8 *dest;
    u_int i, rows;
    int bg, bg0;
 
    dest = p->screen_base+sy*fontheight(p)*p->next_line+sx;
 
    bg0 = attr_bgcol_ec(p,conp);
    for (rows = height*fontheight(p); rows--;) {
        bg = bg0;
        for (i = p->var.bits_per_pixel; i--; dest += p->next_plane) {
            if (bg & 1)
                fb_memset255(dest, width);
            else
                fb_memclear(dest, width);
            bg >>= 1;
        }
    }
}
 
void fbcon_ilbm_putc(struct vc_data *conp, struct display *p, int c, int yy,
                     int xx)
{
    u8 *dest, *cdat;
    u_int rows, i;
    u8 d;
    int fg0, bg0, fg, bg;
 
    dest = p->screen_base+yy*fontheight(p)*p->next_line+xx;
    cdat = p->fontdata+(c&p->charmask)*fontheight(p);
    fg0 = attr_fgcol(p,c);
    bg0 = attr_bgcol(p,c);
 
    for (rows = fontheight(p); rows--;) {
        d = *cdat++;
        fg = fg0;
        bg = bg0;
        for (i = p->var.bits_per_pixel; i--; dest += p->next_plane) {
            if (bg & 1){
                if (fg & 1)
                    *dest = 0xff;
                else
                    *dest = ~d;
            }else{
                if (fg & 1)
                    *dest = d;
                else
                    *dest = 0x00;
            }
            bg >>= 1;
            fg >>= 1;
        }
    }
}
 
    /*
     *  I've split the console character loop in two parts:
     *
     *      - slow version: this blits one character at a time
     *
     *      - fast version: this blits 4 characters at a time at a longword
     *                      aligned address, to reduce the number of expensive
     *                      Chip RAM accesses.
     *
     *  Experiments on my A4000/040 revealed that this makes a console switch
     *  on a 640x400 screen with 256 colors about 3 times faster.
     *
     *  -- Geert
     */
 
void fbcon_ilbm_putcs(struct vc_data *conp, struct display *p,
                      const unsigned short *s, int count, int yy, int xx)
{
    u8 *dest0, *dest, *cdat1, *cdat2, *cdat3, *cdat4;
    u_int rows, i;
    u16 c1, c2, c3, c4;
    u32 d;
    int fg0, bg0, fg, bg;
 
    dest0 = p->screen_base+yy*fontheight(p)*p->next_line+xx;
    c1 = scr_readw(s);
    fg0 = attr_fgcol(p, c1);
    bg0 = attr_bgcol(p, c1);
 
    while (count--)
        if (xx&3 || count < 3) {        /* Slow version */
            c1 = scr_readw(s++) & p->charmask;
            dest = dest0++;
            xx++;
 
            cdat1 = p->fontdata+c1*fontheight(p);
            for (rows = fontheight(p); rows--;) {
                d = *cdat1++;
                fg = fg0;
                bg = bg0;
                for (i = p->var.bits_per_pixel; i--; dest += p->next_plane) {
                    if (bg & 1){
                        if (fg & 1)
                            *dest = 0xff;
                        else
                            *dest = ~d;
                    }else{
                        if (fg & 1)
                            *dest = d;
                        else
                            *dest = 0x00;
                    }
                    bg >>= 1;
                    fg >>= 1;
                }
            }
        } else {                /* Fast version */
            c1 = scr_readw(&s[0]) & p->charmask;
            c2 = scr_readw(&s[1]) & p->charmask;
            c3 = scr_readw(&s[2]) & p->charmask;
            c4 = scr_readw(&s[3]) & p->charmask;
 
            dest = dest0;
            cdat1 = p->fontdata+c1*fontheight(p);
            cdat2 = p->fontdata+c2*fontheight(p);
            cdat3 = p->fontdata+c3*fontheight(p);
            cdat4 = p->fontdata+c4*fontheight(p);
            for (rows = fontheight(p); rows--;) {
#if defined(__BIG_ENDIAN)
                d = *cdat1++<<24 | *cdat2++<<16 | *cdat3++<<8 | *cdat4++;
#elif defined(__LITTLE_ENDIAN)
                d = *cdat1++ | *cdat2++<<8 | *cdat3++<<16 | *cdat4++<<24;
#else
#error FIXME: No endianness??
#endif
                fg = fg0;
                bg = bg0;
                for (i = p->var.bits_per_pixel; i--; dest += p->next_plane) {
                    if (bg & 1){
                        if (fg & 1)
                            *(u32 *)dest = 0xffffffff;
                        else
                            *(u32 *)dest = ~d;
                    }else{
                        if (fg & 1)
                            *(u32 *)dest = d;
                        else
                            *(u32 *)dest = 0x00000000;
                    }
                    bg >>= 1;
                    fg >>= 1;
                }
            }
            s += 4;
            dest0 += 4;
            xx += 4;
            count -= 3;
        }
}
 
void fbcon_ilbm_revc(struct display *p, int xx, int yy)
{
    u8 *dest, *dest0;
    u_int rows, i;
    int mask;
 
    dest0 = p->screen_base+yy*fontheight(p)*p->next_line+xx;
    mask = p->fgcol ^ p->bgcol;
 
    /*
     *  This should really obey the individual character's
     *  background and foreground colors instead of simply
     *  inverting.
     */
 
    for (i = p->var.bits_per_pixel; i--; dest0 += p->next_plane) {
        if (mask & 1) {
            dest = dest0;
            for (rows = fontheight(p); rows--; dest += p->next_line)
                *dest = ~*dest;
        }
        mask >>= 1;
    }
}
 
 
    /*
     *  `switch' for the low level operations
     */
 
struct display_switch fbcon_ilbm = {
    setup:              fbcon_ilbm_setup,
    bmove:              fbcon_ilbm_bmove,
    clear:              fbcon_ilbm_clear,
    putc:               fbcon_ilbm_putc,
    putcs:              fbcon_ilbm_putcs,
    revc:               fbcon_ilbm_revc,
    fontwidthmask:      FONTWIDTH(8)
};
 
 
#ifdef MODULE
MODULE_LICENSE("GPL");
 
int init_module(void)
{
    return 0;
}
 
void cleanup_module(void)
{}
#endif /* MODULE */
 
 
    /*
     *  Visible symbols for modules
     */
 
EXPORT_SYMBOL(fbcon_ilbm);
EXPORT_SYMBOL(fbcon_ilbm_setup);
EXPORT_SYMBOL(fbcon_ilbm_bmove);
EXPORT_SYMBOL(fbcon_ilbm_clear);
EXPORT_SYMBOL(fbcon_ilbm_putc);
EXPORT_SYMBOL(fbcon_ilbm_putcs);
EXPORT_SYMBOL(fbcon_ilbm_revc);

Browse

Tools

Subversion Repositories or1k

[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [video/] [fbcon-ilbm.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`* linux/drivers/video/ilbm.c -- Low level frame buffer operations for`
3			`* interleaved bitplanes � la Amiga`
4			`*`
5			`* Created 5 Apr 1997 by Geert Uytterhoeven`
6			`*`
7			`* This file is subject to the terms and conditions of the GNU General Public`
8			`* License. See the file COPYING in the main directory of this archive for`
9			`* more details.`
10			`*/`
11
12			`#include <linux/module.h>`
13			`#include <linux/tty.h>`
14			`#include <linux/console.h>`
15			`#include <linux/string.h>`
16			`#include <linux/fb.h>`
17
18			`#include <video/fbcon.h>`
19			`#include <video/fbcon-ilbm.h>`
20
21
22			`/*`
23			`* Interleaved bitplanes � la Amiga`
24			`*`
25			`* This code heavily relies on the fact that`
26			`*`
27			`* next_line == interleave == next_plane*bits_per_pixel`
28			`*`
29			`* But maybe it can be merged with the code for normal bitplanes without`
30			`* much performance loss?`
31			`*/`
32
33			`void fbcon_ilbm_setup(struct display *p)`
34			`{`
35			`if (p->line_length) {`
36			`p->next_line = p->line_length*p->var.bits_per_pixel;`
37			`p->next_plane = p->line_length;`
38			`} else {`
39			`p->next_line = p->type_aux;`
40			`p->next_plane = p->type_aux/p->var.bits_per_pixel;`
41			`}`
42			`}`
43
44			`void fbcon_ilbm_bmove(struct display *p, int sy, int sx, int dy, int dx,`
45			`int height, int width)`
46			`{`
47			`if (sx == 0 && dx == 0 && width == p->next_plane)`
48			`fb_memmove(p->screen_base+dyfontheight(p)p->next_line,`
49			`p->screen_base+syfontheight(p)p->next_line,`
50			`heightfontheight(p)p->next_line);`
51			`else {`
52			`u8 src, dest;`
53			`u_int i;`
54
55			`if (dy <= sy) {`
56			`src = p->screen_base+syfontheight(p)p->next_line+sx;`
57			`dest = p->screen_base+dyfontheight(p)p->next_line+dx;`
58			`for (i = p->var.bits_per_pixelheightfontheight(p); i--;) {`
59			`fb_memmove(dest, src, width);`
60			`src += p->next_plane;`
61			`dest += p->next_plane;`
62			`}`
63			`} else {`
64			`src = p->screen_base+(sy+height)fontheight(p)p->next_line+sx;`
65			`dest = p->screen_base+(dy+height)fontheight(p)p->next_line+dx;`
66			`for (i = p->var.bits_per_pixelheightfontheight(p); i--;) {`
67			`src -= p->next_plane;`
68			`dest -= p->next_plane;`
69			`fb_memmove(dest, src, width);`
70			`}`
71			`}`
72			`}`
73			`}`
74
75			`void fbcon_ilbm_clear(struct vc_data conp, struct display p, int sy, int sx,`
76			`int height, int width)`
77			`{`
78			`u8 *dest;`
79			`u_int i, rows;`
80			`int bg, bg0;`
81
82			`dest = p->screen_base+syfontheight(p)p->next_line+sx;`
83
84			`bg0 = attr_bgcol_ec(p,conp);`
85			`for (rows = height*fontheight(p); rows--;) {`
86			`bg = bg0;`
87			`for (i = p->var.bits_per_pixel; i--; dest += p->next_plane) {`
88			`if (bg & 1)`
89			`fb_memset255(dest, width);`
90			`else`
91			`fb_memclear(dest, width);`
92			`bg >>= 1;`
93			`}`
94			`}`
95			`}`
96
97			`void fbcon_ilbm_putc(struct vc_data conp, struct display p, int c, int yy,`
98			`int xx)`
99			`{`
100			`u8 dest, cdat;`
101			`u_int rows, i;`
102			`u8 d;`
103			`int fg0, bg0, fg, bg;`
104
105			`dest = p->screen_base+yyfontheight(p)p->next_line+xx;`
106			`cdat = p->fontdata+(c&p->charmask)*fontheight(p);`
107			`fg0 = attr_fgcol(p,c);`
108			`bg0 = attr_bgcol(p,c);`
109
110			`for (rows = fontheight(p); rows--;) {`
111			`d = *cdat++;`
112			`fg = fg0;`
113			`bg = bg0;`
114			`for (i = p->var.bits_per_pixel; i--; dest += p->next_plane) {`
115			`if (bg & 1){`
116			`if (fg & 1)`
117			`*dest = 0xff;`
118			`else`
119			`*dest = ~d;`
120			`}else{`
121			`if (fg & 1)`
122			`*dest = d;`
123			`else`
124			`*dest = 0x00;`
125			`}`
126			`bg >>= 1;`
127			`fg >>= 1;`
128			`}`
129			`}`
130			`}`
131
132			`/*`
133			`* I've split the console character loop in two parts:`
134			`*`
135			`* - slow version: this blits one character at a time`
136			`*`
137			`* - fast version: this blits 4 characters at a time at a longword`
138			`* aligned address, to reduce the number of expensive`
139			`* Chip RAM accesses.`
140			`*`
141			`* Experiments on my A4000/040 revealed that this makes a console switch`
142			`* on a 640x400 screen with 256 colors about 3 times faster.`
143			`*`
144			`* -- Geert`
145			`*/`
146
147			`void fbcon_ilbm_putcs(struct vc_data conp, struct display p,`
148			`const unsigned short *s, int count, int yy, int xx)`
149			`{`
150			`u8 dest0, dest, cdat1, cdat2, cdat3, cdat4;`
151			`u_int rows, i;`
152			`u16 c1, c2, c3, c4;`
153			`u32 d;`
154			`int fg0, bg0, fg, bg;`
155
156			`dest0 = p->screen_base+yyfontheight(p)p->next_line+xx;`
157			`c1 = scr_readw(s);`
158			`fg0 = attr_fgcol(p, c1);`
159			`bg0 = attr_bgcol(p, c1);`
160
161			`while (count--)`
162			`if (xx&3 \|\| count < 3) { /* Slow version */`
163			`c1 = scr_readw(s++) & p->charmask;`
164			`dest = dest0++;`
165			`xx++;`
166
167			`cdat1 = p->fontdata+c1*fontheight(p);`
168			`for (rows = fontheight(p); rows--;) {`
169			`d = *cdat1++;`
170			`fg = fg0;`
171			`bg = bg0;`
172			`for (i = p->var.bits_per_pixel; i--; dest += p->next_plane) {`
173			`if (bg & 1){`
174			`if (fg & 1)`
175			`*dest = 0xff;`
176			`else`
177			`*dest = ~d;`
178			`}else{`
179			`if (fg & 1)`
180			`*dest = d;`
181			`else`
182			`*dest = 0x00;`
183			`}`
184			`bg >>= 1;`
185			`fg >>= 1;`
186			`}`
187			`}`
188			`} else { /* Fast version */`
189			`c1 = scr_readw(&s[0]) & p->charmask;`
190			`c2 = scr_readw(&s[1]) & p->charmask;`
191			`c3 = scr_readw(&s[2]) & p->charmask;`
192			`c4 = scr_readw(&s[3]) & p->charmask;`
193
194			`dest = dest0;`
195			`cdat1 = p->fontdata+c1*fontheight(p);`
196			`cdat2 = p->fontdata+c2*fontheight(p);`
197			`cdat3 = p->fontdata+c3*fontheight(p);`
198			`cdat4 = p->fontdata+c4*fontheight(p);`
199			`for (rows = fontheight(p); rows--;) {`
200			`#if defined(__BIG_ENDIAN)`
201			`d = cdat1++<<24 \| cdat2++<<16 \| cdat3++<<8 \| cdat4++;`
202			`#elif defined(__LITTLE_ENDIAN)`
203			`d = cdat1++ \| cdat2++<<8 \| cdat3++<<16 \| cdat4++<<24;`
204			`#else`
205			`#error FIXME: No endianness??`
206			`#endif`
207			`fg = fg0;`
208			`bg = bg0;`
209			`for (i = p->var.bits_per_pixel; i--; dest += p->next_plane) {`
210			`if (bg & 1){`
211			`if (fg & 1)`
212			`(u32 )dest = 0xffffffff;`
213			`else`
214			`(u32 )dest = ~d;`
215			`}else{`
216			`if (fg & 1)`
217			`(u32 )dest = d;`
218			`else`
219			`(u32 )dest = 0x00000000;`
220			`}`
221			`bg >>= 1;`
222			`fg >>= 1;`
223			`}`
224			`}`
225			`s += 4;`
226			`dest0 += 4;`
227			`xx += 4;`
228			`count -= 3;`
229			`}`
230			`}`
231
232			`void fbcon_ilbm_revc(struct display *p, int xx, int yy)`
233			`{`
234			`u8 dest, dest0;`
235			`u_int rows, i;`
236			`int mask;`
237
238			`dest0 = p->screen_base+yyfontheight(p)p->next_line+xx;`
239			`mask = p->fgcol ^ p->bgcol;`
240
241			`/*`
242			`* This should really obey the individual character's`
243			`* background and foreground colors instead of simply`
244			`* inverting.`
245			`*/`
246
247			`for (i = p->var.bits_per_pixel; i--; dest0 += p->next_plane) {`
248			`if (mask & 1) {`
249			`dest = dest0;`
250			`for (rows = fontheight(p); rows--; dest += p->next_line)`
251			`dest = ~dest;`
252			`}`
253			`mask >>= 1;`
254			`}`
255			`}`
256
257
258			`/*`
259			* `switch' for the low level operations
260			`*/`
261
262			`struct display_switch fbcon_ilbm = {`
263			`setup: fbcon_ilbm_setup,`
264			`bmove: fbcon_ilbm_bmove,`
265			`clear: fbcon_ilbm_clear,`
266			`putc: fbcon_ilbm_putc,`
267			`putcs: fbcon_ilbm_putcs,`
268			`revc: fbcon_ilbm_revc,`
269			`fontwidthmask: FONTWIDTH(8)`
270			`};`
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			`#endif /* MODULE */`
284
285
286			`/*`
287			`* Visible symbols for modules`
288			`*/`
289
290			`EXPORT_SYMBOL(fbcon_ilbm);`
291			`EXPORT_SYMBOL(fbcon_ilbm_setup);`
292			`EXPORT_SYMBOL(fbcon_ilbm_bmove);`
293			`EXPORT_SYMBOL(fbcon_ilbm_clear);`
294			`EXPORT_SYMBOL(fbcon_ilbm_putc);`
295			`EXPORT_SYMBOL(fbcon_ilbm_putcs);`
296			`EXPORT_SYMBOL(fbcon_ilbm_revc);`