forked from ~ljy/RK356X_SDK_RELEASE
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2024-02-20 e636c8d336489bf3eed5878299e6cc045bbad077 
 kernel/drivers/video/console/sticon.c
....@@ -2,7 +2,7 @@
22  *  linux/drivers/video/console/sticon.c - console driver using HP's STI firmware
33  *
44  *	Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
5
- *	Copyright (C) 2002 Helge Deller <deller@gmx.de>
5
+ *	Copyright (C) 2002-2020 Helge Deller <deller@gmx.de>
66  *
77  *  Based on linux/drivers/video/vgacon.c and linux/drivers/video/fbcon.c,
88  *  which were
....@@ -43,6 +43,9 @@
4343 #include <linux/kd.h>
4444 #include <linux/selection.h>
4545 #include <linux/module.h>
46
+#include <linux/slab.h>
47
+#include <linux/font.h>
48
+#include <linux/crc32.h>
4649 
4750 #include <asm/io.h>
4851 
....@@ -52,27 +55,15 @@
5255 #define BLANK 0
5356 static int vga_is_gfx;
5457 
58
+#define STI_DEF_FONT	sticon_sti->font
59
+
60
+/* borrowed from fbcon.c */
61
+#define FNTREFCOUNT(fd)	(fd->refcount)
62
+#define FNTCRC(fd)	(fd->crc)
63
+static struct sti_cooked_font *font_data[MAX_NR_CONSOLES];
64
+
5565 /* this is the sti_struct used for this console */
5666 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
-}
7667 
7768 static const char *sticon_startup(void)
7869 {
....@@ -81,72 +72,54 @@
8172 
8273 static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos)
8374 {
84
-    int redraw_cursor = 0;
85
-
8675     if (vga_is_gfx || console_blanked)
8776 	    return;
8877 
8978     if (conp->vc_mode != KD_TEXT)
9079     	    return;
91
-#if 0
92
-    if ((p->cursor_x == xpos) && (p->cursor_y == ypos)) {
93
-	    cursor_undrawn();
94
-	    redraw_cursor = 1;
95
-    }
96
-#endif
9780 
98
-    sti_putc(sticon_sti, c, ypos, xpos);
99
-
100
-    if (redraw_cursor)
101
-	    vbl_cursor_cnt = CURSOR_DRAW_DELAY;
81
+    sti_putc(sticon_sti, c, ypos, xpos, font_data[conp->vc_num]);
10282 }
10383 
10484 static void sticon_putcs(struct vc_data *conp, const unsigned short *s,
10585 			 int count, int ypos, int xpos)
10686 {
107
-    int redraw_cursor = 0;
108
-
10987     if (vga_is_gfx || console_blanked)
11088 	    return;
11189 
11290     if (conp->vc_mode != KD_TEXT)
11391     	    return;
11492 
115
-#if 0
116
-    if ((p->cursor_y == ypos) && (xpos <= p->cursor_x) &&
117
-	(p->cursor_x < (xpos + count))) {
118
-	    cursor_undrawn();
119
-	    redraw_cursor = 1;
120
-    }
121
-#endif
122
-
12393     while (count--) {
124
-	sti_putc(sticon_sti, scr_readw(s++), ypos, xpos++);
94
+	sti_putc(sticon_sti, scr_readw(s++), ypos, xpos++,
95
+		 font_data[conp->vc_num]);
12596     }
126
-
127
-    if (redraw_cursor)
128
-	    vbl_cursor_cnt = CURSOR_DRAW_DELAY;
12997 }
13098 
13199 static void sticon_cursor(struct vc_data *conp, int mode)
132100 {
133101     unsigned short car1;
134102 
135
-    car1 = conp->vc_screenbuf[conp->vc_x + conp->vc_y * conp->vc_cols];
103
+    /* no cursor update if screen is blanked */
104
+    if (vga_is_gfx || console_blanked)
105
+	return;
106
+
107
+    car1 = conp->vc_screenbuf[conp->state.x + conp->state.y * conp->vc_cols];
136108     switch (mode) {
137109     case CM_ERASE:
138
-	sti_putc(sticon_sti, car1, conp->vc_y, conp->vc_x);
110
+	sti_putc(sticon_sti, car1, conp->state.y, conp->state.x,
111
+		 font_data[conp->vc_num]);
139112 	break;
140113     case CM_MOVE:
141114     case CM_DRAW:
142
-	switch (conp->vc_cursor_type & 0x0f) {
115
+	switch (CUR_SIZE(conp->vc_cursor_type)) {
143116 	case CUR_UNDERLINE:
144117 	case CUR_LOWER_THIRD:
145118 	case CUR_LOWER_HALF:
146119 	case CUR_TWO_THIRDS:
147120 	case CUR_BLOCK:
148121 	    sti_putc(sticon_sti, (car1 & 255) + (0 << 8) + (7 << 11),
149
-		     conp->vc_y, conp->vc_x);
122
+		     conp->state.y, conp->state.x, font_data[conp->vc_num]);
150123 	    break;
151124 	}
152125 	break;
....@@ -165,17 +138,137 @@
165138 
166139     switch (dir) {
167140     case SM_UP:
168
-	sti_bmove(sti, t + count, 0, t, 0, b - t - count, conp->vc_cols);
169
-	sti_clear(sti, b - count, 0, count, conp->vc_cols, conp->vc_video_erase_char);
141
+	sti_bmove(sti, t + count, 0, t, 0, b - t - count, conp->vc_cols,
142
+		  font_data[conp->vc_num]);
143
+	sti_clear(sti, b - count, 0, count, conp->vc_cols,
144
+		  conp->vc_video_erase_char, font_data[conp->vc_num]);
170145 	break;
171146 
172147     case SM_DOWN:
173
-	sti_bmove(sti, t, 0, t + count, 0, b - t - count, conp->vc_cols);
174
-	sti_clear(sti, t, 0, count, conp->vc_cols, conp->vc_video_erase_char);
148
+	sti_bmove(sti, t, 0, t + count, 0, b - t - count, conp->vc_cols,
149
+		  font_data[conp->vc_num]);
150
+	sti_clear(sti, t, 0, count, conp->vc_cols,
151
+		  conp->vc_video_erase_char, font_data[conp->vc_num]);
175152 	break;
176153     }
177154 
178155     return false;
156
+}
157
+
158
+static int sticon_set_def_font(int unit, struct console_font *op)
159
+{
160
+	if (font_data[unit] != STI_DEF_FONT) {
161
+		if (--FNTREFCOUNT(font_data[unit]) == 0) {
162
+			kfree(font_data[unit]->raw_ptr);
163
+			kfree(font_data[unit]);
164
+		}
165
+		font_data[unit] = STI_DEF_FONT;
166
+	}
167
+
168
+	return 0;
169
+}
170
+
171
+static int sticon_set_font(struct vc_data *vc, struct console_font *op)
172
+{
173
+	struct sti_struct *sti = sticon_sti;
174
+	int vc_cols, vc_rows, vc_old_cols, vc_old_rows;
175
+	int unit = vc->vc_num;
176
+	int w = op->width;
177
+	int h = op->height;
178
+	int size, i, bpc, pitch;
179
+	struct sti_rom_font *new_font;
180
+	struct sti_cooked_font *cooked_font;
181
+	unsigned char *data = op->data, *p;
182
+
183
+	if ((w < 6) || (h < 6) || (w > 32) || (h > 32)
184
+	    || (op->charcount != 256 && op->charcount != 512))
185
+		return -EINVAL;
186
+	pitch = ALIGN(w, 8) / 8;
187
+	bpc = pitch * h;
188
+	size = bpc * op->charcount;
189
+
190
+	new_font = kmalloc(sizeof(*new_font) + size, STI_LOWMEM);
191
+	if (!new_font)
192
+		return -ENOMEM;
193
+
194
+	new_font->first_char = 0;
195
+	new_font->last_char = op->charcount - 1;
196
+	new_font->width = w;
197
+	new_font->height = h;
198
+	new_font->font_type = STI_FONT_HPROMAN8;
199
+	new_font->bytes_per_char = bpc;
200
+	new_font->underline_height = 0;
201
+	new_font->underline_pos = 0;
202
+
203
+	cooked_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL);
204
+	if (!cooked_font) {
205
+		kfree(new_font);
206
+		return -ENOMEM;
207
+	}
208
+	cooked_font->raw = new_font;
209
+	cooked_font->raw_ptr = new_font;
210
+	cooked_font->width = w;
211
+	cooked_font->height = h;
212
+	FNTREFCOUNT(cooked_font) = 0;	/* usage counter */
213
+
214
+	p = (unsigned char *) new_font;
215
+	p += sizeof(*new_font);
216
+	for (i = 0; i < op->charcount; i++) {
217
+		memcpy(p, data, bpc);
218
+		data += pitch*32;
219
+		p += bpc;
220
+	}
221
+	FNTCRC(cooked_font) = crc32(0, new_font, size + sizeof(*new_font));
222
+	sti_font_convert_bytemode(sti, cooked_font);
223
+	new_font = cooked_font->raw_ptr;
224
+
225
+	/* check if font is already used by other console */
226
+	for (i = 0; i < MAX_NR_CONSOLES; i++) {
227
+		if (font_data[i] != STI_DEF_FONT
228
+		    && (FNTCRC(font_data[i]) == FNTCRC(cooked_font))) {
229
+			kfree(new_font);
230
+			kfree(cooked_font);
231
+			/* current font is the same as the new one */
232
+			if (i == unit)
233
+				return 0;
234
+			cooked_font = font_data[i];
235
+			new_font = cooked_font->raw_ptr;
236
+			break;
237
+		}
238
+	}
239
+
240
+	/* clear screen with old font: we now may have less rows */
241
+	vc_old_rows = vc->vc_rows;
242
+	vc_old_cols = vc->vc_cols;
243
+	sti_clear(sticon_sti, 0, 0, vc_old_rows, vc_old_cols,
244
+		  vc->vc_video_erase_char, font_data[vc->vc_num]);
245
+
246
+	/* delete old font in case it is a user font */
247
+	sticon_set_def_font(unit, NULL);
248
+
249
+	FNTREFCOUNT(cooked_font)++;
250
+	font_data[unit] = cooked_font;
251
+
252
+	vc_cols = sti_onscreen_x(sti) / cooked_font->width;
253
+	vc_rows = sti_onscreen_y(sti) / cooked_font->height;
254
+	vc_resize(vc, vc_cols, vc_rows);
255
+
256
+	/* need to repaint screen if cols & rows are same as old font */
257
+	if (vc_cols == vc_old_cols && vc_rows == vc_old_rows)
258
+		update_screen(vc);
259
+
260
+	return 0;
261
+}
262
+
263
+static int sticon_font_default(struct vc_data *vc, struct console_font *op, char *name)
264
+{
265
+	return sticon_set_def_font(vc->vc_num, op);
266
+}
267
+
268
+static int sticon_font_set(struct vc_data *vc, struct console_font *font,
269
+			   unsigned int flags)
270
+{
271
+	return sticon_set_font(vc, font);
179272 }
180273 
181274 static void sticon_init(struct vc_data *c, int init)
....@@ -184,23 +277,25 @@
184277     int vc_cols, vc_rows;
185278 
186279     sti_set(sti, 0, 0, sti_onscreen_y(sti), sti_onscreen_x(sti), 0);
187
-    vc_cols = sti_onscreen_x(sti) / sti->font_width;
188
-    vc_rows = sti_onscreen_y(sti) / sti->font_height;
280
+    vc_cols = sti_onscreen_x(sti) / sti->font->width;
281
+    vc_rows = sti_onscreen_y(sti) / sti->font->height;
189282     c->vc_can_do_color = 1;
190283     
191284     if (init) {
192285 	c->vc_cols = vc_cols;
193286 	c->vc_rows = vc_rows;
194287     } else {
195
-	/* vc_rows = (c->vc_rows > vc_rows) ? vc_rows : c->vc_rows; */
196
-	/* vc_cols = (c->vc_cols > vc_cols) ? vc_cols : c->vc_cols; */
197288 	vc_resize(c, vc_cols, vc_rows);
198
-/*	vc_resize_con(vc_rows, vc_cols, c->vc_num); */
199289     }
200290 }
201291 
202292 static void sticon_deinit(struct vc_data *c)
203293 {
294
+    int i;
295
+
296
+    /* free memory used by user font */
297
+    for (i = 0; i < MAX_NR_CONSOLES; i++)
298
+	sticon_set_def_font(i, NULL);
204299 }
205300 
206301 static void sticon_clear(struct vc_data *conp, int sy, int sx, int height,
....@@ -209,17 +304,13 @@
209304     if (!height || !width)
210305 	return;
211306 
212
-    sti_clear(sticon_sti, sy, sx, height, width, conp->vc_video_erase_char);
307
+    sti_clear(sticon_sti, sy, sx, height, width,
308
+	      conp->vc_video_erase_char, font_data[conp->vc_num]);
213309 }
214310 
215311 static int sticon_switch(struct vc_data *conp)
216312 {
217313     return 1;	/* needs refreshing */
218
-}
219
-
220
-static int sticon_set_origin(struct vc_data *conp)
221
-{
222
-    return 0;
223314 }
224315 
225316 static int sticon_blank(struct vc_data *c, int blank, int mode_switch)
....@@ -229,67 +320,17 @@
229320 	    vga_is_gfx = 0;
230321 	return 1;
231322     }
232
-    sticon_set_origin(c);
233
-    sti_clear(sticon_sti, 0,0, c->vc_rows, c->vc_cols, BLANK);
323
+    sti_clear(sticon_sti, 0, 0, c->vc_rows, c->vc_cols, BLANK,
324
+	      font_data[c->vc_num]);
234325     if (mode_switch)
235326 	vga_is_gfx = 1;
236327     return 1;
237328 }
238329 
239
-static u16 *sticon_screen_pos(struct vc_data *conp, int offset)
240
-{
241
-    int line;
242
-    unsigned long p;
243
-
244
-    if (conp->vc_num != fg_console || !softback_lines)
245
-    	return (u16 *)(conp->vc_origin + offset);
246
-    line = offset / conp->vc_size_row;
247
-    if (line >= softback_lines)
248
-    	return (u16 *)(conp->vc_origin + offset - softback_lines * conp->vc_size_row);
249
-    p = softback_curr + offset;
250
-    if (p >= softback_end)
251
-    	p += softback_buf - softback_end;
252
-    return (u16 *)p;
253
-}
254
-
255
-static unsigned long sticon_getxy(struct vc_data *conp, unsigned long pos,
256
-				  int *px, int *py)
257
-{
258
-    int x, y;
259
-    unsigned long ret;
260
-    if (pos >= conp->vc_origin && pos < conp->vc_scr_end) {
261
-    	unsigned long offset = (pos - conp->vc_origin) / 2;
262
-    	
263
-    	x = offset % conp->vc_cols;
264
-    	y = offset / conp->vc_cols;
265
-    	if (conp->vc_num == fg_console)
266
-    	    y += softback_lines;
267
-    	ret = pos + (conp->vc_cols - x) * 2;
268
-    } else if (conp->vc_num == fg_console && softback_lines) {
269
-    	unsigned long offset = pos - softback_curr;
270
-    	
271
-    	if (pos < softback_curr)
272
-    	    offset += softback_end - softback_buf;
273
-    	offset /= 2;
274
-    	x = offset % conp->vc_cols;
275
-    	y = offset / conp->vc_cols;
276
-	ret = pos + (conp->vc_cols - x) * 2;
277
-	if (ret == softback_end)
278
-	    ret = softback_buf;
279
-	if (ret == softback_in)
280
-	    ret = conp->vc_origin;
281
-    } else {
282
-    	/* Should not happen */
283
-    	x = y = 0;
284
-    	ret = conp->vc_origin;
285
-    }
286
-    if (px) *px = x;
287
-    if (py) *py = y;
288
-    return ret;
289
-}
290
-
291
-static u8 sticon_build_attr(struct vc_data *conp, u8 color, u8 intens,
292
-			    u8 blink, u8 underline, u8 reverse, u8 italic)
330
+static u8 sticon_build_attr(struct vc_data *conp, u8 color,
331
+			    enum vc_intensity intens,
332
+			    bool blink, bool underline, bool reverse,
333
+			    bool italic)
293334 {
294335 	u8 fg = color & 7;
295336 	u8 bg = (color & 0x70) >> 4;
....@@ -316,10 +357,6 @@
316357     }
317358 }
318359 
319
-static void sticon_save_screen(struct vc_data *conp)
320
-{
321
-}
322
-
323360 static const struct consw sti_con = {
324361 	.owner			= THIS_MODULE,
325362 	.con_startup		= sticon_startup,
....@@ -332,19 +369,18 @@
332369 	.con_scroll		= sticon_scroll,
333370 	.con_switch		= sticon_switch,
334371 	.con_blank		= sticon_blank,
335
-	.con_set_origin		= sticon_set_origin,
336
-	.con_save_screen	= sticon_save_screen, 
372
+	.con_font_set		= sticon_font_set,
373
+	.con_font_default	= sticon_font_default,
337374 	.con_build_attr		= sticon_build_attr,
338375 	.con_invert_region	= sticon_invert_region, 
339
-	.con_screen_pos		= sticon_screen_pos,
340
-	.con_getxy		= sticon_getxy,
341376 };
342377 
343378 
344379 
345380 static int __init sticonsole_init(void)
346381 {
347
-    int err;
382
+    int err, i;
383
+
348384     /* already initialized ? */
349385     if (sticon_sti)
350386 	 return 0;
....@@ -353,14 +389,16 @@
353389     if (!sticon_sti)
354390 	return -ENODEV;
355391 
356
-    if (conswitchp == &dummy_con) {
357
-	printk(KERN_INFO "sticon: Initializing STI text console.\n");
358
-	console_lock();
359
-	err = do_take_over_console(&sti_con, 0, MAX_NR_CONSOLES - 1, 1);
360
-	console_unlock();
361
-	return err;
362
-    }
363
-    return 0;
392
+    for (i = 0; i < MAX_NR_CONSOLES; i++)
393
+	font_data[i] = STI_DEF_FONT;
394
+
395
+    pr_info("sticon: Initializing STI text console.\n");
396
+    console_lock();
397
+    err = do_take_over_console(&sti_con, 0, MAX_NR_CONSOLES - 1,
398
+		PAGE0->mem_cons.cl_class != CL_DUPLEX);
399
+    console_unlock();
400
+
401
+    return err;
364402 }
365403 
366404 module_init(sticonsole_init);