OpenCores
URL https://opencores.org/ocsvn/test_project/test_project/trunk

Subversion Repositories test_project

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

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 62 marcus.erl
/*
2
 *  linux/drivers/video/console/sticon.c - console driver using HP's STI firmware
3
 *
4
 *      Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
5
 *      Copyright (C) 2002 Helge Deller <deller@gmx.de>
6
 *
7
 *  Based on linux/drivers/video/vgacon.c and linux/drivers/video/fbcon.c,
8
 *  which were
9
 *
10
 *      Created 28 Sep 1997 by Geert Uytterhoeven
11
 *      Rewritten by Martin Mares <mj@ucw.cz>, July 1998
12
 *      Copyright (C) 1991, 1992  Linus Torvalds
13
 *                          1995  Jay Estabrook
14
 *      Copyright (C) 1995 Geert Uytterhoeven
15
 *      Copyright (C) 1993 Bjoern Brauel
16
 *                         Roman Hodek
17
 *      Copyright (C) 1993 Hamish Macdonald
18
 *                         Greg Harp
19
 *      Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
20
 *
21
 *            with work by William Rucklidge (wjr@cs.cornell.edu)
22
 *                         Geert Uytterhoeven
23
 *                         Jes Sorensen (jds@kom.auc.dk)
24
 *                         Martin Apel
25
 *            with work by Guenther Kelleter
26
 *                         Martin Schaller
27
 *                         Andreas Schwab
28
 *                         Emmanuel Marty (core@ggi-project.org)
29
 *                         Jakub Jelinek (jj@ultra.linux.cz)
30
 *                         Martin Mares <mj@ucw.cz>
31
 *
32
 *  This file is subject to the terms and conditions of the GNU General Public
33
 *  License.  See the file COPYING in the main directory of this archive for
34
 *  more details.
35
 *
36
 */
37
 
38
#include <linux/init.h>
39
#include <linux/kernel.h>
40
#include <linux/console.h>
41
#include <linux/errno.h>
42
#include <linux/vt_kern.h>
43
#include <linux/kd.h>
44
#include <linux/selection.h>
45
#include <linux/module.h>
46
 
47
#include <asm/io.h>
48
 
49
#include "../sticore.h"
50
 
51
/* switching to graphics mode */
52
#define BLANK 0
53
static int vga_is_gfx;
54
 
55
/* this is the sti_struct used for this console */
56
static struct sti_struct *sticon_sti;
57
 
58
/* Software scrollback */
59
static unsigned long softback_buf, softback_curr;
60
static unsigned long softback_in;
61
static unsigned long /* softback_top, */ softback_end;
62
static int softback_lines;
63
 
64
/* software cursor */
65
static int cursor_drawn;
66
#define CURSOR_DRAW_DELAY               (1)
67
#define DEFAULT_CURSOR_BLINK_RATE       (20)
68
 
69
static int vbl_cursor_cnt;
70
 
71
static inline void cursor_undrawn(void)
72
{
73
    vbl_cursor_cnt = 0;
74
    cursor_drawn = 0;
75
}
76
 
77
static const char *sticon_startup(void)
78
{
79
    return "STI console";
80
}
81
 
82
static int sticon_set_palette(struct vc_data *c, unsigned char *table)
83
{
84
    return -EINVAL;
85
}
86
 
87
static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos)
88
{
89
    int redraw_cursor = 0;
90
 
91
    if (vga_is_gfx || console_blanked)
92
            return;
93
 
94
    if (conp->vc_mode != KD_TEXT)
95
            return;
96
#if 0
97
    if ((p->cursor_x == xpos) && (p->cursor_y == ypos)) {
98
            cursor_undrawn();
99
            redraw_cursor = 1;
100
    }
101
#endif
102
 
103
    sti_putc(sticon_sti, c, ypos, xpos);
104
 
105
    if (redraw_cursor)
106
            vbl_cursor_cnt = CURSOR_DRAW_DELAY;
107
}
108
 
109
static void sticon_putcs(struct vc_data *conp, const unsigned short *s,
110
                         int count, int ypos, int xpos)
111
{
112
    int redraw_cursor = 0;
113
 
114
    if (vga_is_gfx || console_blanked)
115
            return;
116
 
117
    if (conp->vc_mode != KD_TEXT)
118
            return;
119
 
120
#if 0
121
    if ((p->cursor_y == ypos) && (xpos <= p->cursor_x) &&
122
        (p->cursor_x < (xpos + count))) {
123
            cursor_undrawn();
124
            redraw_cursor = 1;
125
    }
126
#endif
127
 
128
    while (count--) {
129
        sti_putc(sticon_sti, scr_readw(s++), ypos, xpos++);
130
    }
131
 
132
    if (redraw_cursor)
133
            vbl_cursor_cnt = CURSOR_DRAW_DELAY;
134
}
135
 
136
static void sticon_cursor(struct vc_data *conp, int mode)
137
{
138
    unsigned short car1;
139
 
140
    car1 = conp->vc_screenbuf[conp->vc_x + conp->vc_y * conp->vc_cols];
141
    switch (mode) {
142
    case CM_ERASE:
143
        sti_putc(sticon_sti, car1, conp->vc_y, conp->vc_x);
144
        break;
145
    case CM_MOVE:
146
    case CM_DRAW:
147
        switch (conp->vc_cursor_type & 0x0f) {
148
        case CUR_UNDERLINE:
149
        case CUR_LOWER_THIRD:
150
        case CUR_LOWER_HALF:
151
        case CUR_TWO_THIRDS:
152
        case CUR_BLOCK:
153
            sti_putc(sticon_sti, (car1 & 255) + (0 << 8) + (7 << 11),
154
                     conp->vc_y, conp->vc_x);
155
            break;
156
        }
157
        break;
158
    }
159
}
160
 
161
static int sticon_scroll(struct vc_data *conp, int t, int b, int dir, int count)
162
{
163
    struct sti_struct *sti = sticon_sti;
164
 
165
    if (vga_is_gfx)
166
        return 0;
167
 
168
    sticon_cursor(conp, CM_ERASE);
169
 
170
    switch (dir) {
171
    case SM_UP:
172
        sti_bmove(sti, t + count, 0, t, 0, b - t - count, conp->vc_cols);
173
        sti_clear(sti, b - count, 0, count, conp->vc_cols, conp->vc_video_erase_char);
174
        break;
175
 
176
    case SM_DOWN:
177
        sti_bmove(sti, t, 0, t + count, 0, b - t - count, conp->vc_cols);
178
        sti_clear(sti, t, 0, count, conp->vc_cols, conp->vc_video_erase_char);
179
        break;
180
    }
181
 
182
    return 0;
183
}
184
 
185
static void sticon_bmove(struct vc_data *conp, int sy, int sx,
186
        int dy, int dx, int height, int width)
187
{
188
    if (!width || !height)
189
            return;
190
#if 0
191
    if (((sy <= p->cursor_y) && (p->cursor_y < sy+height) &&
192
        (sx <= p->cursor_x) && (p->cursor_x < sx+width)) ||
193
        ((dy <= p->cursor_y) && (p->cursor_y < dy+height) &&
194
        (dx <= p->cursor_x) && (p->cursor_x < dx+width)))
195
                sticon_cursor(p, CM_ERASE /*|CM_SOFTBACK*/);
196
#endif
197
 
198
    sti_bmove(sticon_sti, sy, sx, dy, dx, height, width);
199
}
200
 
201
static void sticon_init(struct vc_data *c, int init)
202
{
203
    struct sti_struct *sti = sticon_sti;
204
    int vc_cols, vc_rows;
205
 
206
    sti_set(sti, 0, 0, sti_onscreen_y(sti), sti_onscreen_x(sti), 0);
207
    vc_cols = sti_onscreen_x(sti) / sti->font_width;
208
    vc_rows = sti_onscreen_y(sti) / sti->font_height;
209
    c->vc_can_do_color = 1;
210
 
211
    if (init) {
212
        c->vc_cols = vc_cols;
213
        c->vc_rows = vc_rows;
214
    } else {
215
        /* vc_rows = (c->vc_rows > vc_rows) ? vc_rows : c->vc_rows; */
216
        /* vc_cols = (c->vc_cols > vc_cols) ? vc_cols : c->vc_cols; */
217
        vc_resize(c, vc_cols, vc_rows);
218
/*      vc_resize_con(vc_rows, vc_cols, c->vc_num); */
219
    }
220
}
221
 
222
static void sticon_deinit(struct vc_data *c)
223
{
224
}
225
 
226
static void sticon_clear(struct vc_data *conp, int sy, int sx, int height,
227
                         int width)
228
{
229
    if (!height || !width)
230
        return;
231
 
232
    sti_clear(sticon_sti, sy, sx, height, width, conp->vc_video_erase_char);
233
}
234
 
235
static int sticon_switch(struct vc_data *conp)
236
{
237
    return 1;   /* needs refreshing */
238
}
239
 
240
static int sticon_set_origin(struct vc_data *conp)
241
{
242
    return 0;
243
}
244
 
245
static int sticon_blank(struct vc_data *c, int blank, int mode_switch)
246
{
247
    if (blank == 0) {
248
        if (mode_switch)
249
            vga_is_gfx = 0;
250
        return 1;
251
    }
252
    sticon_set_origin(c);
253
    sti_clear(sticon_sti, 0,0, c->vc_rows, c->vc_cols, BLANK);
254
    if (mode_switch)
255
        vga_is_gfx = 1;
256
    return 1;
257
}
258
 
259
static int sticon_scrolldelta(struct vc_data *conp, int lines)
260
{
261
    return 0;
262
}
263
 
264
static u16 *sticon_screen_pos(struct vc_data *conp, int offset)
265
{
266
    int line;
267
    unsigned long p;
268
 
269
    if (conp->vc_num != fg_console || !softback_lines)
270
        return (u16 *)(conp->vc_origin + offset);
271
    line = offset / conp->vc_size_row;
272
    if (line >= softback_lines)
273
        return (u16 *)(conp->vc_origin + offset - softback_lines * conp->vc_size_row);
274
    p = softback_curr + offset;
275
    if (p >= softback_end)
276
        p += softback_buf - softback_end;
277
    return (u16 *)p;
278
}
279
 
280
static unsigned long sticon_getxy(struct vc_data *conp, unsigned long pos,
281
                                  int *px, int *py)
282
{
283
    int x, y;
284
    unsigned long ret;
285
    if (pos >= conp->vc_origin && pos < conp->vc_scr_end) {
286
        unsigned long offset = (pos - conp->vc_origin) / 2;
287
 
288
        x = offset % conp->vc_cols;
289
        y = offset / conp->vc_cols;
290
        if (conp->vc_num == fg_console)
291
            y += softback_lines;
292
        ret = pos + (conp->vc_cols - x) * 2;
293
    } else if (conp->vc_num == fg_console && softback_lines) {
294
        unsigned long offset = pos - softback_curr;
295
 
296
        if (pos < softback_curr)
297
            offset += softback_end - softback_buf;
298
        offset /= 2;
299
        x = offset % conp->vc_cols;
300
        y = offset / conp->vc_cols;
301
        ret = pos + (conp->vc_cols - x) * 2;
302
        if (ret == softback_end)
303
            ret = softback_buf;
304
        if (ret == softback_in)
305
            ret = conp->vc_origin;
306
    } else {
307
        /* Should not happen */
308
        x = y = 0;
309
        ret = conp->vc_origin;
310
    }
311
    if (px) *px = x;
312
    if (py) *py = y;
313
    return ret;
314
}
315
 
316
static u8 sticon_build_attr(struct vc_data *conp, u8 color, u8 intens,
317
                            u8 blink, u8 underline, u8 reverse, u8 italic)
318
{
319
    u8 attr = ((color & 0x70) >> 1) | ((color & 7));
320
 
321
    if (reverse) {
322
        color = ((color >> 3) & 0x7) | ((color & 0x7) << 3);
323
    }
324
 
325
    return attr;
326
}
327
 
328
static void sticon_invert_region(struct vc_data *conp, u16 *p, int count)
329
{
330
    int col = 1; /* vga_can_do_color; */
331
 
332
    while (count--) {
333
        u16 a = scr_readw(p);
334
 
335
        if (col)
336
                a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | (((a) & 0x0700) << 4);
337
        else
338
                a = ((a & 0x0700) == 0x0100) ? 0x7000 : 0x7700;
339
 
340
        scr_writew(a, p++);
341
    }
342
}
343
 
344
static void sticon_save_screen(struct vc_data *conp)
345
{
346
}
347
 
348
static const struct consw sti_con = {
349
        .owner                  = THIS_MODULE,
350
        .con_startup            = sticon_startup,
351
        .con_init               = sticon_init,
352
        .con_deinit             = sticon_deinit,
353
        .con_clear              = sticon_clear,
354
        .con_putc               = sticon_putc,
355
        .con_putcs              = sticon_putcs,
356
        .con_cursor             = sticon_cursor,
357
        .con_scroll             = sticon_scroll,
358
        .con_bmove              = sticon_bmove,
359
        .con_switch             = sticon_switch,
360
        .con_blank              = sticon_blank,
361
        .con_set_palette        = sticon_set_palette,
362
        .con_scrolldelta        = sticon_scrolldelta,
363
        .con_set_origin         = sticon_set_origin,
364
        .con_save_screen        = sticon_save_screen,
365
        .con_build_attr         = sticon_build_attr,
366
        .con_invert_region      = sticon_invert_region,
367
        .con_screen_pos         = sticon_screen_pos,
368
        .con_getxy              = sticon_getxy,
369
};
370
 
371
 
372
 
373
int __init sticonsole_init(void)
374
{
375
    /* already initialized ? */
376
    if (sticon_sti)
377
         return 0;
378
 
379
    sticon_sti = sti_get_rom(0);
380
    if (!sticon_sti)
381
        return -ENODEV;
382
 
383
    if (conswitchp == &dummy_con) {
384
        printk(KERN_INFO "sticon: Initializing STI text console.\n");
385
        return take_over_console(&sti_con, 0, MAX_NR_CONSOLES - 1, 1);
386
    }
387
    return 0;
388
}
389
 
390
module_init(sticonsole_init);
391
MODULE_LICENSE("GPL");

powered by: WebSVN 2.1.0

© copyright 1999-2025 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.