Home Home > GIT Browse > openSUSE-15.1
summaryrefslogtreecommitdiff
blob: dbfe4eecf12e56d328478dff9a84064c591bfe85 (plain)
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
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
/*
 *  linux/drivers/video/console/bitblit.c -- BitBlitting Operation
 *
 *  Originally from the 'accel_*' routines in drivers/video/console/fbcon.c
 *
 *      Copyright (C) 2004 Antonino Daplas <adaplas @pol.net>
 *
 *  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/slab.h>
#include <linux/string.h>
#include <linux/fb.h>
#include <linux/vt_kern.h>
#include <linux/console.h>
#include <asm/types.h>
#include "fbcon.h"

/*
 * Accelerated handlers.
 */
static void update_attr(u8 *dst, u8 *src, int attribute,
			       struct vc_data *vc)
{
	int i, offset = (vc->vc_font.height < 10) ? 1 : 2;
	int width = DIV_ROUND_UP(vc->vc_font.width, 8);
	unsigned int cellsize = vc->vc_font.height * width;
	u8 c;

	offset = cellsize - (offset * width);
	for (i = 0; i < cellsize; i++) {
		c = src[i];
		if (attribute & FBCON_ATTRIBUTE_UNDERLINE && i >= offset)
			c = 0xff;
		if (attribute & FBCON_ATTRIBUTE_BOLD)
			c |= c >> 1;
		if (attribute & FBCON_ATTRIBUTE_REVERSE)
			c = ~c;
		dst[i] = c;
	}
}

static void bit_bmove(struct vc_data *vc, struct fb_info *info, int sy,
		      int sx, int dy, int dx, int height, int width)
{
	struct fb_copyarea area;

	area.sx = sx * vc->vc_font.width;
	area.sy = sy * vc->vc_font.height;
	area.dx = dx * vc->vc_font.width;
	area.dy = dy * vc->vc_font.height;
	area.height = height * vc->vc_font.height;
	area.width = width * vc->vc_font.width;

	info->fbops->fb_copyarea(info, &area);
}

static void bit_clear(struct vc_data *vc, struct fb_info *info, int sy,
		      int sx, int height, int width)
{
	int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
	struct fb_fillrect region;

	region.color = attr_bgcol_ec(bgshift, vc, info);
	region.dx = sx * vc->vc_font.width;
	region.dy = sy * vc->vc_font.height;
	region.width = width * vc->vc_font.width;
	region.height = height * vc->vc_font.height;
	region.rop = ROP_COPY;

	info->fbops->fb_fillrect(info, &region);
}

static inline void bit_putcs_aligned(struct vc_data *vc, struct fb_info *info,
				     const u16 *s, u32 attr, u32 cnt,
				     u32 d_pitch, u32 s_pitch, u32 cellsize,
				     struct fb_image *image, u8 *buf, u8 *dst)
{
	u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
	u32 idx = vc->vc_font.width >> 3;
	u8 *src;

	while (cnt--) {
		src = vc->vc_font.data + (scr_readw(s++)&
					  charmask)*cellsize;

		if (attr) {
			update_attr(buf, src, attr, vc);
			src = buf;
		}

		if (likely(idx == 1))
			__fb_pad_aligned_buffer(dst, d_pitch, src, idx,
						image->height);
		else
			fb_pad_aligned_buffer(dst, d_pitch, src, idx,
					      image->height);

		dst += s_pitch;
	}

	info->fbops->fb_imageblit(info, image);
}

static inline void bit_putcs_unaligned(struct vc_data *vc,
				       struct fb_info *info, const u16 *s,
				       u32 attr, u32 cnt, u32 d_pitch,
				       u32 s_pitch, u32 cellsize,
				       struct fb_image *image, u8 *buf,
				       u8 *dst)
{
	u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
	u32 shift_low = 0, mod = vc->vc_font.width % 8;
	u32 shift_high = 8;
	u32 idx = vc->vc_font.width >> 3;
	u8 *src;

	while (cnt--) {
		src = vc->vc_font.data + (scr_readw(s++)&
					  charmask)*cellsize;

		if (attr) {
			update_attr(buf, src, attr, vc);
			src = buf;
		}

		fb_pad_unaligned_buffer(dst, d_pitch, src, idx,
					image->height, shift_high,
					shift_low, mod);
		shift_low += mod;
		dst += (shift_low >= 8) ? s_pitch : s_pitch - 1;
		shift_low &= 7;
		shift_high = 8 - shift_low;
	}

	info->fbops->fb_imageblit(info, image);

}

static void bit_putcs(struct vc_data *vc, struct fb_info *info,
		      const unsigned short *s, int count, int yy, int xx,
		      int fg, int bg)
{
	struct fb_image image;
	u32 width = DIV_ROUND_UP(vc->vc_font.width, 8);
	u32 cellsize = width * vc->vc_font.height;
	u32 maxcnt = info->pixmap.size/cellsize;
	u32 scan_align = info->pixmap.scan_align - 1;
	u32 buf_align = info->pixmap.buf_align - 1;
	u32 mod = vc->vc_font.width % 8, cnt, pitch, size;
	u32 attribute = get_attribute(info, scr_readw(s));
	u8 *dst, *buf = NULL;

	image.fg_color = fg;
	image.bg_color = bg;
	image.dx = xx * vc->vc_font.width;
	image.dy = yy * vc->vc_font.height;
	image.height = vc->vc_font.height;
	image.depth = 1;

	if (attribute) {
		buf = kmalloc(cellsize, GFP_ATOMIC);
		if (!buf)
			return;
	}

	while (count) {
		if (count > maxcnt)
			cnt = maxcnt;
		else
			cnt = count;

		image.width = vc->vc_font.width * cnt;
		pitch = DIV_ROUND_UP(image.width, 8) + scan_align;
		pitch &= ~scan_align;
		size = pitch * image.height + buf_align;
		size &= ~buf_align;
		dst = fb_get_buffer_offset(info, &info->pixmap, size);
		image.data = dst;

		if (!mod)
			bit_putcs_aligned(vc, info, s, attribute, cnt, pitch,
					  width, cellsize, &image, buf, dst);
		else
			bit_putcs_unaligned(vc, info, s, attribute, cnt,
					    pitch, width, cellsize, &image,
					    buf, dst);

		image.dx += cnt * vc->vc_font.width;
		count -= cnt;
		s += cnt;
	}

	/* buf is always NULL except when in monochrome mode, so in this case
	   it's a gain to check buf against NULL even though kfree() handles
	   NULL pointers just fine */
	if (unlikely(buf))
		kfree(buf);

}

static void bit_clear_margins(struct vc_data *vc, struct fb_info *info,
			      int bottom_only)
{
	unsigned int cw = vc->vc_font.width;
	unsigned int ch = vc->vc_font.height;
	unsigned int rw = info->var.xres - (vc->vc_cols*cw);
	unsigned int bh = info->var.yres - (vc->vc_rows*ch);
	unsigned int rs = info->var.xres - rw;
	unsigned int bs = info->var.yres - bh;
	struct fb_fillrect region;

	region.color = 0;
	region.rop = ROP_COPY;

	if (rw && !bottom_only) {
		region.dx = info->var.xoffset + rs;
		region.dy = 0;
		region.width = rw;
		region.height = info->var.yres_virtual;
		info->fbops->fb_fillrect(info, &region);
	}

	if (bh) {
		region.dx = info->var.xoffset;
		region.dy = info->var.yoffset + bs;
		region.width = rs;
		region.height = bh;
		info->fbops->fb_fillrect(info, &region);
	}
}

static void bit_cursor(struct vc_data *vc, struct fb_info *info, int mode,
		       int softback_lines, int fg, int bg)
{
	struct fb_cursor cursor;
	struct fbcon_ops *ops = info->fbcon_par;
	unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
	int w = DIV_ROUND_UP(vc->vc_font.width, 8), c;
	int y = real_y(ops->p, vc->vc_y);
	int attribute, use_sw = (vc->vc_cursor_type & 0x10);
	int err = 1;
	char *src;

	cursor.set = 0;

	if (softback_lines) {
		if (y + softback_lines >= vc->vc_rows) {
			mode = CM_ERASE;
			ops->cursor_flash = 0;
			return;
		} else
			y += softback_lines;
	}

 	c = scr_readw((u16 *) vc->vc_pos);
	attribute = get_attribute(info, c);
	src = vc->vc_font.data + ((c & charmask) * (w * vc->vc_font.height));

	if (ops->cursor_state.image.data != src ||
	    ops->cursor_reset) {
	    ops->cursor_state.image.data = src;
	    cursor.set |= FB_CUR_SETIMAGE;
	}

	if (attribute) {
		u8 *dst;

		dst = kmalloc(w * vc->vc_font.height, GFP_ATOMIC);
		if (!dst)
			return;
		kfree(ops->cursor_data);
		ops->cursor_data = dst;
		update_attr(dst, src, attribute, vc);
		src = dst;
	}

	if (ops->cursor_state.image.fg_color != fg ||
	    ops->cursor_state.image.bg_color != bg ||
	    ops->cursor_reset) {
		ops->cursor_state.image.fg_color = fg;
		ops->cursor_state.image.bg_color = bg;
		cursor.set |= FB_CUR_SETCMAP;
	}

	if ((ops->cursor_state.image.dx != (vc->vc_font.width * vc->vc_x)) ||
	    (ops->cursor_state.image.dy != (vc->vc_font.height * y)) ||
	    ops->cursor_reset) {
		ops->cursor_state.image.dx = vc->vc_font.width * vc->vc_x;
		ops->cursor_state.image.dy = vc->vc_font.height * y;
		cursor.set |= FB_CUR_SETPOS;
	}

	if (ops->cursor_state.image.height != vc->vc_font.height ||
	    ops->cursor_state.image.width != vc->vc_font.width ||
	    ops->cursor_reset) {
		ops->cursor_state.image.height = vc->vc_font.height;
		ops->cursor_state.image.width = vc->vc_font.width;
		cursor.set |= FB_CUR_SETSIZE;
	}

	if (ops->cursor_state.hot.x || ops->cursor_state.hot.y ||
	    ops->cursor_reset) {
		ops->cursor_state.hot.x = cursor.hot.y = 0;
		cursor.set |= FB_CUR_SETHOT;
	}

	if (cursor.set & FB_CUR_SETSIZE ||
	    vc->vc_cursor_type != ops->p->cursor_shape ||
	    ops->cursor_state.mask == NULL ||
	    ops->cursor_reset) {
		char *mask = kmalloc(w*vc->vc_font.height, GFP_ATOMIC);
		int cur_height, size, i = 0;
		u8 msk = 0xff;

		if (!mask)
			return;

		kfree(ops->cursor_state.mask);
		ops->cursor_state.mask = mask;

		ops->p->cursor_shape = vc->vc_cursor_type;
		cursor.set |= FB_CUR_SETSHAPE;

		switch (ops->p->cursor_shape & CUR_HWMASK) {
		case CUR_NONE:
			cur_height = 0;
			break;
		case CUR_UNDERLINE:
			cur_height = (vc->vc_font.height < 10) ? 1 : 2;
			break;
		case CUR_LOWER_THIRD:
			cur_height = vc->vc_font.height/3;
			break;
		case CUR_LOWER_HALF:
			cur_height = vc->vc_font.height >> 1;
			break;
		case CUR_TWO_THIRDS:
			cur_height = (vc->vc_font.height << 1)/3;
			break;
		case CUR_BLOCK:
		default:
			cur_height = vc->vc_font.height;
			break;
		}
		size = (vc->vc_font.height - cur_height) * w;
		while (size--)
			mask[i++] = ~msk;
		size = cur_height * w;
		while (size--)
			mask[i++] = msk;
	}

	switch (mode) {
	case CM_ERASE:
		ops->cursor_state.enable = 0;
		break;
	case CM_DRAW:
	case CM_MOVE:
	default:
		ops->cursor_state.enable = (use_sw) ? 0 : 1;
		break;
	}

	cursor.image.data = src;
	cursor.image.fg_color = ops->cursor_state.image.fg_color;
	cursor.image.bg_color = ops->cursor_state.image.bg_color;
	cursor.image.dx = ops->cursor_state.image.dx;
	cursor.image.dy = ops->cursor_state.image.dy;
	cursor.image.height = ops->cursor_state.image.height;
	cursor.image.width = ops->cursor_state.image.width;
	cursor.hot.x = ops->cursor_state.hot.x;
	cursor.hot.y = ops->cursor_state.hot.y;
	cursor.mask = ops->cursor_state.mask;
	cursor.enable = ops->cursor_state.enable;
	cursor.image.depth = 1;
	cursor.rop = ROP_XOR;

	if (info->fbops->fb_cursor)
		err = info->fbops->fb_cursor(info, &cursor);

	if (err)
		soft_cursor(info, &cursor);

	ops->cursor_reset = 0;
}

static int bit_update_start(struct fb_info *info)
{
	struct fbcon_ops *ops = info->fbcon_par;
	int err;

	err = fb_pan_display(info, &ops->var);
	ops->var.xoffset = info->var.xoffset;
	ops->var.yoffset = info->var.yoffset;
	ops->var.vmode = info->var.vmode;
	return err;
}

void fbcon_set_bitops(struct fbcon_ops *ops)
{
	ops->bmove = bit_bmove;
	ops->clear = bit_clear;
	ops->putcs = bit_putcs;
	ops->clear_margins = bit_clear_margins;
	ops->cursor = bit_cursor;
	ops->update_start = bit_update_start;
	ops->rotate_font = NULL;

	if (ops->rotate)
		fbcon_set_rotate(ops);
}

EXPORT_SYMBOL(fbcon_set_bitops);

MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>");
MODULE_DESCRIPTION("Bit Blitting Operation");
MODULE_LICENSE("GPL");