4 * Mapping from internal code (such as Latin-1 or Unicode or IBM PC code)
9 * Support for multiple unimaps by Jakub Jelinek <jj@ultra.linux.cz>, July 1998
11 * Fix bug in inverse translation. Stanislav Voronyi <stas@cnti.uanet.kharkov.ua>, Dec 1998
14 #include <linux/module.h>
16 #include <linux/errno.h>
18 #include <linux/slab.h>
19 #include <linux/init.h>
20 #include <linux/tty.h>
21 #include <asm/uaccess.h>
22 #include <linux/console.h>
23 #include <linux/consolemap.h>
24 #include <linux/vt_kern.h>
26 static unsigned short translations[][256] = {
27 /* 8-bit Latin-1 mapped to Unicode -- trivial mapping */
29 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
30 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f,
31 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
32 0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f,
33 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
34 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f,
35 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
36 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f,
37 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
38 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f,
39 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
40 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f,
41 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
42 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f,
43 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
44 0x0078, 0x0079, 0x007a, 0x007b, 0x007c, 0x007d, 0x007e, 0x007f,
45 0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x0085, 0x0086, 0x0087,
46 0x0088, 0x0089, 0x008a, 0x008b, 0x008c, 0x008d, 0x008e, 0x008f,
47 0x0090, 0x0091, 0x0092, 0x0093, 0x0094, 0x0095, 0x0096, 0x0097,
48 0x0098, 0x0099, 0x009a, 0x009b, 0x009c, 0x009d, 0x009e, 0x009f,
49 0x00a0, 0x00a1, 0x00a2, 0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7,
50 0x00a8, 0x00a9, 0x00aa, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af,
51 0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x00b4, 0x00b5, 0x00b6, 0x00b7,
52 0x00b8, 0x00b9, 0x00ba, 0x00bb, 0x00bc, 0x00bd, 0x00be, 0x00bf,
53 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6, 0x00c7,
54 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce, 0x00cf,
55 0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7,
56 0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df,
57 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6, 0x00e7,
58 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef,
59 0x00f0, 0x00f1, 0x00f2, 0x00f3, 0x00f4, 0x00f5, 0x00f6, 0x00f7,
60 0x00f8, 0x00f9, 0x00fa, 0x00fb, 0x00fc, 0x00fd, 0x00fe, 0x00ff
62 /* VT100 graphics mapped to Unicode */
64 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
65 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f,
66 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
67 0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f,
68 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
69 0x0028, 0x0029, 0x002a, 0x2192, 0x2190, 0x2191, 0x2193, 0x002f,
70 0x2588, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
71 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f,
72 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
73 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f,
74 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
75 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x00a0,
76 0x25c6, 0x2592, 0x2409, 0x240c, 0x240d, 0x240a, 0x00b0, 0x00b1,
77 0x2591, 0x240b, 0x2518, 0x2510, 0x250c, 0x2514, 0x253c, 0x23ba,
78 0x23bb, 0x2500, 0x23bc, 0x23bd, 0x251c, 0x2524, 0x2534, 0x252c,
79 0x2502, 0x2264, 0x2265, 0x03c0, 0x2260, 0x00a3, 0x00b7, 0x007f,
80 0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x0085, 0x0086, 0x0087,
81 0x0088, 0x0089, 0x008a, 0x008b, 0x008c, 0x008d, 0x008e, 0x008f,
82 0x0090, 0x0091, 0x0092, 0x0093, 0x0094, 0x0095, 0x0096, 0x0097,
83 0x0098, 0x0099, 0x009a, 0x009b, 0x009c, 0x009d, 0x009e, 0x009f,
84 0x00a0, 0x00a1, 0x00a2, 0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7,
85 0x00a8, 0x00a9, 0x00aa, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af,
86 0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x00b4, 0x00b5, 0x00b6, 0x00b7,
87 0x00b8, 0x00b9, 0x00ba, 0x00bb, 0x00bc, 0x00bd, 0x00be, 0x00bf,
88 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6, 0x00c7,
89 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce, 0x00cf,
90 0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7,
91 0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df,
92 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6, 0x00e7,
93 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef,
94 0x00f0, 0x00f1, 0x00f2, 0x00f3, 0x00f4, 0x00f5, 0x00f6, 0x00f7,
95 0x00f8, 0x00f9, 0x00fa, 0x00fb, 0x00fc, 0x00fd, 0x00fe, 0x00ff
97 /* IBM Codepage 437 mapped to Unicode */
99 0x0000, 0x263a, 0x263b, 0x2665, 0x2666, 0x2663, 0x2660, 0x2022,
100 0x25d8, 0x25cb, 0x25d9, 0x2642, 0x2640, 0x266a, 0x266b, 0x263c,
101 0x25b6, 0x25c0, 0x2195, 0x203c, 0x00b6, 0x00a7, 0x25ac, 0x21a8,
102 0x2191, 0x2193, 0x2192, 0x2190, 0x221f, 0x2194, 0x25b2, 0x25bc,
103 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
104 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f,
105 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
106 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f,
107 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
108 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f,
109 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
110 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f,
111 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
112 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f,
113 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
114 0x0078, 0x0079, 0x007a, 0x007b, 0x007c, 0x007d, 0x007e, 0x2302,
115 0x00c7, 0x00fc, 0x00e9, 0x00e2, 0x00e4, 0x00e0, 0x00e5, 0x00e7,
116 0x00ea, 0x00eb, 0x00e8, 0x00ef, 0x00ee, 0x00ec, 0x00c4, 0x00c5,
117 0x00c9, 0x00e6, 0x00c6, 0x00f4, 0x00f6, 0x00f2, 0x00fb, 0x00f9,
118 0x00ff, 0x00d6, 0x00dc, 0x00a2, 0x00a3, 0x00a5, 0x20a7, 0x0192,
119 0x00e1, 0x00ed, 0x00f3, 0x00fa, 0x00f1, 0x00d1, 0x00aa, 0x00ba,
120 0x00bf, 0x2310, 0x00ac, 0x00bd, 0x00bc, 0x00a1, 0x00ab, 0x00bb,
121 0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556,
122 0x2555, 0x2563, 0x2551, 0x2557, 0x255d, 0x255c, 0x255b, 0x2510,
123 0x2514, 0x2534, 0x252c, 0x251c, 0x2500, 0x253c, 0x255e, 0x255f,
124 0x255a, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256c, 0x2567,
125 0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256b,
126 0x256a, 0x2518, 0x250c, 0x2588, 0x2584, 0x258c, 0x2590, 0x2580,
127 0x03b1, 0x00df, 0x0393, 0x03c0, 0x03a3, 0x03c3, 0x00b5, 0x03c4,
128 0x03a6, 0x0398, 0x03a9, 0x03b4, 0x221e, 0x03c6, 0x03b5, 0x2229,
129 0x2261, 0x00b1, 0x2265, 0x2264, 0x2320, 0x2321, 0x00f7, 0x2248,
130 0x00b0, 0x2219, 0x00b7, 0x221a, 0x207f, 0x00b2, 0x25a0, 0x00a0
132 /* User mapping -- default to codes for direct font mapping */
134 0xf000, 0xf001, 0xf002, 0xf003, 0xf004, 0xf005, 0xf006, 0xf007,
135 0xf008, 0xf009, 0xf00a, 0xf00b, 0xf00c, 0xf00d, 0xf00e, 0xf00f,
136 0xf010, 0xf011, 0xf012, 0xf013, 0xf014, 0xf015, 0xf016, 0xf017,
137 0xf018, 0xf019, 0xf01a, 0xf01b, 0xf01c, 0xf01d, 0xf01e, 0xf01f,
138 0xf020, 0xf021, 0xf022, 0xf023, 0xf024, 0xf025, 0xf026, 0xf027,
139 0xf028, 0xf029, 0xf02a, 0xf02b, 0xf02c, 0xf02d, 0xf02e, 0xf02f,
140 0xf030, 0xf031, 0xf032, 0xf033, 0xf034, 0xf035, 0xf036, 0xf037,
141 0xf038, 0xf039, 0xf03a, 0xf03b, 0xf03c, 0xf03d, 0xf03e, 0xf03f,
142 0xf040, 0xf041, 0xf042, 0xf043, 0xf044, 0xf045, 0xf046, 0xf047,
143 0xf048, 0xf049, 0xf04a, 0xf04b, 0xf04c, 0xf04d, 0xf04e, 0xf04f,
144 0xf050, 0xf051, 0xf052, 0xf053, 0xf054, 0xf055, 0xf056, 0xf057,
145 0xf058, 0xf059, 0xf05a, 0xf05b, 0xf05c, 0xf05d, 0xf05e, 0xf05f,
146 0xf060, 0xf061, 0xf062, 0xf063, 0xf064, 0xf065, 0xf066, 0xf067,
147 0xf068, 0xf069, 0xf06a, 0xf06b, 0xf06c, 0xf06d, 0xf06e, 0xf06f,
148 0xf070, 0xf071, 0xf072, 0xf073, 0xf074, 0xf075, 0xf076, 0xf077,
149 0xf078, 0xf079, 0xf07a, 0xf07b, 0xf07c, 0xf07d, 0xf07e, 0xf07f,
150 0xf080, 0xf081, 0xf082, 0xf083, 0xf084, 0xf085, 0xf086, 0xf087,
151 0xf088, 0xf089, 0xf08a, 0xf08b, 0xf08c, 0xf08d, 0xf08e, 0xf08f,
152 0xf090, 0xf091, 0xf092, 0xf093, 0xf094, 0xf095, 0xf096, 0xf097,
153 0xf098, 0xf099, 0xf09a, 0xf09b, 0xf09c, 0xf09d, 0xf09e, 0xf09f,
154 0xf0a0, 0xf0a1, 0xf0a2, 0xf0a3, 0xf0a4, 0xf0a5, 0xf0a6, 0xf0a7,
155 0xf0a8, 0xf0a9, 0xf0aa, 0xf0ab, 0xf0ac, 0xf0ad, 0xf0ae, 0xf0af,
156 0xf0b0, 0xf0b1, 0xf0b2, 0xf0b3, 0xf0b4, 0xf0b5, 0xf0b6, 0xf0b7,
157 0xf0b8, 0xf0b9, 0xf0ba, 0xf0bb, 0xf0bc, 0xf0bd, 0xf0be, 0xf0bf,
158 0xf0c0, 0xf0c1, 0xf0c2, 0xf0c3, 0xf0c4, 0xf0c5, 0xf0c6, 0xf0c7,
159 0xf0c8, 0xf0c9, 0xf0ca, 0xf0cb, 0xf0cc, 0xf0cd, 0xf0ce, 0xf0cf,
160 0xf0d0, 0xf0d1, 0xf0d2, 0xf0d3, 0xf0d4, 0xf0d5, 0xf0d6, 0xf0d7,
161 0xf0d8, 0xf0d9, 0xf0da, 0xf0db, 0xf0dc, 0xf0dd, 0xf0de, 0xf0df,
162 0xf0e0, 0xf0e1, 0xf0e2, 0xf0e3, 0xf0e4, 0xf0e5, 0xf0e6, 0xf0e7,
163 0xf0e8, 0xf0e9, 0xf0ea, 0xf0eb, 0xf0ec, 0xf0ed, 0xf0ee, 0xf0ef,
164 0xf0f0, 0xf0f1, 0xf0f2, 0xf0f3, 0xf0f4, 0xf0f5, 0xf0f6, 0xf0f7,
165 0xf0f8, 0xf0f9, 0xf0fa, 0xf0fb, 0xf0fc, 0xf0fd, 0xf0fe, 0xf0ff
169 /* The standard kernel character-to-font mappings are not invertible
170 -- this is just a best effort. */
172 #define MAX_GLYPH 512 /* Max possible glyph value */
174 static int inv_translate[MAX_NR_CONSOLES];
178 unsigned long refcount;
180 unsigned char *inverse_translations[4];
181 u16 *inverse_trans_unicode;
185 static struct uni_pagedir *dflt;
187 static void set_inverse_transl(struct vc_data *conp, struct uni_pagedir *p, int i)
190 unsigned short *t = translations[i];
194 q = p->inverse_translations[i];
197 q = p->inverse_translations[i] = (unsigned char *)
198 kmalloc(MAX_GLYPH, GFP_KERNEL);
201 memset(q, 0, MAX_GLYPH);
203 for (j = 0; j < E_TABSZ; j++) {
204 glyph = conv_uni_to_pc(conp, t[j]);
205 if (glyph >= 0 && glyph < MAX_GLYPH && q[glyph] < 32) {
206 /* prefer '-' above SHY etc. */
212 static void set_inverse_trans_unicode(struct vc_data *conp,
213 struct uni_pagedir *p)
220 q = p->inverse_trans_unicode;
222 q = p->inverse_trans_unicode =
223 kmalloc(MAX_GLYPH * sizeof(u16), GFP_KERNEL);
227 memset(q, 0, MAX_GLYPH * sizeof(u16));
229 for (i = 0; i < 32; i++) {
230 p1 = p->uni_pgdir[i];
233 for (j = 0; j < 32; j++) {
237 for (k = 0; k < 64; k++) {
239 if (glyph >= 0 && glyph < MAX_GLYPH
241 q[glyph] = (i << 11) + (j << 6) + k;
247 unsigned short *set_translate(int m, struct vc_data *vc)
249 inv_translate[vc->vc_num] = m;
250 return translations[m];
254 * Inverse translation is impossible for several reasons:
255 * 1. The font<->character maps are not 1-1.
256 * 2. The text may have been written while a different translation map
258 * Still, it is now possible to a certain extent to cut and paste non-ASCII.
260 u16 inverse_translate(struct vc_data *conp, int glyph, int use_unicode)
262 struct uni_pagedir *p;
264 if (glyph < 0 || glyph >= MAX_GLYPH)
266 else if (!(p = (struct uni_pagedir *)*conp->vc_uni_pagedir_loc))
268 else if (use_unicode) {
269 if (!p->inverse_trans_unicode)
272 return p->inverse_trans_unicode[glyph];
274 m = inv_translate[conp->vc_num];
275 if (!p->inverse_translations[m])
278 return p->inverse_translations[m][glyph];
281 EXPORT_SYMBOL_GPL(inverse_translate);
283 static void update_user_maps(void)
286 struct uni_pagedir *p, *q = NULL;
288 for (i = 0; i < MAX_NR_CONSOLES; i++) {
289 if (!vc_cons_allocated(i))
291 p = (struct uni_pagedir *)*vc_cons[i].d->vc_uni_pagedir_loc;
293 set_inverse_transl(vc_cons[i].d, p, USER_MAP);
294 set_inverse_trans_unicode(vc_cons[i].d, p);
301 * Load customizable translation table
302 * arg points to a 256 byte translation table.
304 * The "old" variants are for translation directly to font (using the
305 * 0xf000-0xf0ff "transparent" Unicodes) whereas the "new" variants set
306 * Unicodes explicitly.
308 int con_set_trans_old(unsigned char __user * arg)
311 unsigned short *p = translations[USER_MAP];
313 if (!access_ok(VERIFY_READ, arg, E_TABSZ))
317 for (i=0; i<E_TABSZ ; i++) {
319 __get_user(uc, arg+i);
320 p[i] = UNI_DIRECT_BASE | uc;
328 int con_get_trans_old(unsigned char __user * arg)
331 unsigned short *p = translations[USER_MAP];
333 if (!access_ok(VERIFY_WRITE, arg, E_TABSZ))
337 for (i=0; i<E_TABSZ ; i++)
339 ch = conv_uni_to_pc(vc_cons[fg_console].d, p[i]);
340 __put_user((ch & ~0xff) ? 0 : ch, arg+i);
346 int con_set_trans_new(ushort __user * arg)
349 unsigned short *p = translations[USER_MAP];
351 if (!access_ok(VERIFY_READ, arg, E_TABSZ*sizeof(unsigned short)))
355 for (i=0; i<E_TABSZ ; i++) {
357 __get_user(us, arg+i);
366 int con_get_trans_new(ushort __user * arg)
369 unsigned short *p = translations[USER_MAP];
371 if (!access_ok(VERIFY_WRITE, arg, E_TABSZ*sizeof(unsigned short)))
375 for (i=0; i<E_TABSZ ; i++)
376 __put_user(p[i], arg+i);
383 * Unicode -> current font conversion
385 * A font has at most 512 chars, usually 256.
386 * But one font position may represent several Unicode chars.
387 * A hashtable is somewhat of a pain to deal with, so use a
388 * "paged table" instead. Simulation has shown the memory cost of
389 * this 3-level paged table scheme to be comparable to a hash table.
392 extern u8 dfont_unicount[]; /* Defined in console_defmap.c */
393 extern u16 dfont_unitable[];
395 static void con_release_unimap(struct uni_pagedir *p)
400 if (p == dflt) dflt = NULL;
401 for (i = 0; i < 32; i++) {
402 if ((p1 = p->uni_pgdir[i]) != NULL) {
403 for (j = 0; j < 32; j++)
407 p->uni_pgdir[i] = NULL;
409 for (i = 0; i < 4; i++) {
410 kfree(p->inverse_translations[i]);
411 p->inverse_translations[i] = NULL;
413 kfree(p->inverse_trans_unicode);
414 p->inverse_trans_unicode = NULL;
417 /* Caller must hold the console lock */
418 void con_free_unimap(struct vc_data *vc)
420 struct uni_pagedir *p;
422 p = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
425 *vc->vc_uni_pagedir_loc = 0;
428 con_release_unimap(p);
432 static int con_unify_unimap(struct vc_data *conp, struct uni_pagedir *p)
435 struct uni_pagedir *q;
437 for (i = 0; i < MAX_NR_CONSOLES; i++) {
438 if (!vc_cons_allocated(i))
440 q = (struct uni_pagedir *)*vc_cons[i].d->vc_uni_pagedir_loc;
441 if (!q || q == p || q->sum != p->sum)
443 for (j = 0; j < 32; j++) {
445 p1 = p->uni_pgdir[j]; q1 = q->uni_pgdir[j];
450 for (k = 0; k < 32; k++) {
451 if (!p1[k] && !q1[k])
453 if (!p1[k] || !q1[k])
455 if (memcmp(p1[k], q1[k], 64*sizeof(u16)))
463 *conp->vc_uni_pagedir_loc = (unsigned long)q;
464 con_release_unimap(p);
473 con_insert_unipair(struct uni_pagedir *p, u_short unicode, u_short fontpos)
478 if (!(p1 = p->uni_pgdir[n = unicode >> 11])) {
479 p1 = p->uni_pgdir[n] = kmalloc(32*sizeof(u16 *), GFP_KERNEL);
480 if (!p1) return -ENOMEM;
481 for (i = 0; i < 32; i++)
485 if (!(p2 = p1[n = (unicode >> 6) & 0x1f])) {
486 p2 = p1[n] = kmalloc(64*sizeof(u16), GFP_KERNEL);
487 if (!p2) return -ENOMEM;
488 memset(p2, 0xff, 64*sizeof(u16)); /* No glyphs for the characters (yet) */
491 p2[unicode & 0x3f] = fontpos;
493 p->sum += (fontpos << 20) + unicode;
498 /* ui is a leftover from using a hashtable, but might be used again
499 Caller must hold the lock */
500 static int con_do_clear_unimap(struct vc_data *vc, struct unimapinit *ui)
502 struct uni_pagedir *p, *q;
504 p = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
505 if (p && p->readonly)
508 if (!p || --p->refcount) {
509 q = kzalloc(sizeof(*p), GFP_KERNEL);
516 *vc->vc_uni_pagedir_loc = (unsigned long)q;
518 if (p == dflt) dflt = NULL;
521 con_release_unimap(p);
526 int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui)
530 ret = con_do_clear_unimap(vc, ui);
535 int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
537 int err = 0, err1, i;
538 struct uni_pagedir *p, *q;
542 /* Save original vc_unipagdir_loc in case we allocate a new one */
543 p = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
554 if (p->refcount > 1) {
558 err1 = con_do_clear_unimap(vc, NULL);
565 * Since refcount was > 1, con_clear_unimap() allocated a
566 * a new uni_pagedir for this vc. Re: p != q
568 q = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
571 * uni_pgdir is a 32*32*64 table with rows allocated
572 * when its first entry is added. The unicode value must
573 * still be incremented for empty rows. We are copying
574 * entries from "p" (old) to "q" (new).
576 l = 0; /* unicode value */
577 for (i = 0; i < 32; i++)
578 if ((p1 = p->uni_pgdir[i]))
579 for (j = 0; j < 32; j++)
581 for (k = 0; k < 64; k++, l++)
582 if (p2[k] != 0xffff) {
584 * Found one, copy entry for unicode
585 * l with fontpos value p2[k].
587 err1 = con_insert_unipair(q, l, p2[k]);
590 *vc->vc_uni_pagedir_loc = (unsigned long)p;
591 con_release_unimap(q);
598 /* Account for row of 64 empty entries */
602 /* Account for empty table */
606 * Finished copying font table, set vc_uni_pagedir to new table
609 } else if (p == dflt) {
614 * Insert user specified unicode pairs into new table.
617 unsigned short unicode, fontpos;
618 __get_user(unicode, &list->unicode);
619 __get_user(fontpos, &list->fontpos);
620 if ((err1 = con_insert_unipair(p, unicode,fontpos)) != 0)
626 * Merge with fontmaps of any other virtual consoles.
628 if (con_unify_unimap(vc, p)) {
633 for (i = 0; i <= 3; i++)
634 set_inverse_transl(vc, p, i); /* Update inverse translations */
635 set_inverse_trans_unicode(vc, p);
642 * con_set_default_unimap - set default unicode map
643 * @vc: the console we are updating
645 * Loads the unimap for the hardware font, as defined in uni_hash.tbl.
646 * The representation used was the most compact I could come up
647 * with. This routine is executed at video setup, and when the
648 * PIO_FONTRESET ioctl is called.
650 * The caller must hold the console lock
652 int con_set_default_unimap(struct vc_data *vc)
654 int i, j, err = 0, err1;
656 struct uni_pagedir *p;
659 p = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
664 *vc->vc_uni_pagedir_loc = (unsigned long)dflt;
665 if (p && !--p->refcount) {
666 con_release_unimap(p);
672 /* The default font is always 256 characters */
674 err = con_do_clear_unimap(vc, NULL);
678 p = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
681 for (i = 0; i < 256; i++)
682 for (j = dfont_unicount[i]; j; j--) {
683 err1 = con_insert_unipair(p, *(q++), i);
688 if (con_unify_unimap(vc, p)) {
689 dflt = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
693 for (i = 0; i <= 3; i++)
694 set_inverse_transl(vc, p, i); /* Update all inverse translations */
695 set_inverse_trans_unicode(vc, p);
699 EXPORT_SYMBOL(con_set_default_unimap);
702 * con_copy_unimap - copy unimap between two vts
706 * The caller must hold the console lock when invoking this method
708 int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc)
710 struct uni_pagedir *q;
712 if (!*src_vc->vc_uni_pagedir_loc)
714 if (*dst_vc->vc_uni_pagedir_loc == *src_vc->vc_uni_pagedir_loc)
716 con_free_unimap(dst_vc);
717 q = (struct uni_pagedir *)*src_vc->vc_uni_pagedir_loc;
719 *dst_vc->vc_uni_pagedir_loc = (long)q;
722 EXPORT_SYMBOL(con_copy_unimap);
725 * con_get_unimap - get the unicode map
726 * @vc: the console to read from
728 * Read the console unicode data for this console. Called from the ioctl
731 int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list)
735 struct uni_pagedir *p;
740 if (*vc->vc_uni_pagedir_loc) {
741 p = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
742 for (i = 0; i < 32; i++)
743 if ((p1 = p->uni_pgdir[i]))
744 for (j = 0; j < 32; j++)
746 for (k = 0; k < 64; k++) {
747 if (*p2 < MAX_GLYPH && ect++ < ct) {
748 __put_user((u_short)((i<<11)+(j<<6)+k),
750 __put_user((u_short) *p2,
757 __put_user(ect, uct);
759 return ((ect <= ct) ? 0 : -ENOMEM);
763 * Always use USER_MAP. These functions are used by the keyboard,
764 * which shouldn't be affected by G0/G1 switching, etc.
765 * If the user map still contains default values, i.e. the
766 * direct-to-font mapping, then assume user is using Latin1.
768 * FIXME: at some point we need to decide if we want to lock the table
769 * update element itself via the keyboard_event_lock for consistency with the
770 * keyboard driver as well as the consoles
772 /* may be called during an interrupt */
773 u32 conv_8bit_to_uni(unsigned char c)
775 unsigned short uni = translations[USER_MAP][c];
776 return uni == (0xf000 | c) ? c : uni;
779 int conv_uni_to_8bit(u32 uni)
782 for (c = 0; c < 0x100; c++)
783 if (translations[USER_MAP][c] == uni ||
784 (translations[USER_MAP][c] == (c | 0xf000) && uni == c))
790 conv_uni_to_pc(struct vc_data *conp, long ucs)
794 struct uni_pagedir *p;
796 /* Only 16-bit codes supported at this time */
798 return -4; /* Not found */
800 return -1; /* Not a printable character */
801 else if (ucs == 0xfeff || (ucs >= 0x200b && ucs <= 0x200f))
802 return -2; /* Zero-width space */
804 * UNI_DIRECT_BASE indicates the start of the region in the User Zone
805 * which always has a 1:1 mapping to the currently loaded font. The
806 * UNI_DIRECT_MASK indicates the bit span of the region.
808 else if ((ucs & ~UNI_DIRECT_MASK) == UNI_DIRECT_BASE)
809 return ucs & UNI_DIRECT_MASK;
811 if (!*conp->vc_uni_pagedir_loc)
814 p = (struct uni_pagedir *)*conp->vc_uni_pagedir_loc;
815 if ((p1 = p->uni_pgdir[ucs >> 11]) &&
816 (p2 = p1[(ucs >> 6) & 0x1f]) &&
817 (h = p2[ucs & 0x3f]) < MAX_GLYPH)
820 return -4; /* not found */
824 * This is called at sys_setup time, after memory and the console are
825 * initialized. It must be possible to call kmalloc(..., GFP_KERNEL)
826 * from this function, hence the call from sys_setup.
829 console_map_init(void)
833 for (i = 0; i < MAX_NR_CONSOLES; i++)
834 if (vc_cons_allocated(i) && !*vc_cons[i].d->vc_uni_pagedir_loc)
835 con_set_default_unimap(vc_cons[i].d);