Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1 | /* |
| 2 | * sisusb - usb kernel driver for SiS315(E) based USB2VGA dongles |
| 3 | * |
| 4 | * VGA text mode console part |
| 5 | * |
| 6 | * Copyright (C) 2005 by Thomas Winischhofer, Vienna, Austria |
| 7 | * |
| 8 | * If distributed as part of the Linux kernel, this code is licensed under the |
| 9 | * terms of the GPL v2. |
| 10 | * |
| 11 | * Otherwise, the following license terms apply: |
| 12 | * |
| 13 | * * Redistribution and use in source and binary forms, with or without |
| 14 | * * modification, are permitted provided that the following conditions |
| 15 | * * are met: |
| 16 | * * 1) Redistributions of source code must retain the above copyright |
| 17 | * * notice, this list of conditions and the following disclaimer. |
| 18 | * * 2) Redistributions in binary form must reproduce the above copyright |
| 19 | * * notice, this list of conditions and the following disclaimer in the |
| 20 | * * documentation and/or other materials provided with the distribution. |
| 21 | * * 3) The name of the author may not be used to endorse or promote products |
| 22 | * * derived from this software without specific psisusbr written permission. |
| 23 | * * |
| 24 | * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESSED OR |
| 25 | * * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 26 | * * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 27 | * * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 28 | * * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 29 | * * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 30 | * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 31 | * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 32 | * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 33 | * * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 34 | * |
| 35 | * Author: Thomas Winischhofer <thomas@winischhofer.net> |
| 36 | * |
| 37 | * Portions based on vgacon.c which are |
| 38 | * Created 28 Sep 1997 by Geert Uytterhoeven |
| 39 | * Rewritten by Martin Mares <mj@ucw.cz>, July 1998 |
| 40 | * based on code Copyright (C) 1991, 1992 Linus Torvalds |
| 41 | * 1995 Jay Estabrook |
| 42 | * |
| 43 | * A note on using in_atomic() in here: We can't handle console |
| 44 | * calls from non-schedulable context due to our USB-dependend |
| 45 | * nature. For now, this driver just ignores any calls if it |
| 46 | * detects this state. |
| 47 | * |
| 48 | */ |
| 49 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 50 | #include <linux/mutex.h> |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 51 | #include <linux/module.h> |
| 52 | #include <linux/kernel.h> |
| 53 | #include <linux/signal.h> |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 54 | #include <linux/fs.h> |
| 55 | #include <linux/tty.h> |
| 56 | #include <linux/console.h> |
| 57 | #include <linux/string.h> |
| 58 | #include <linux/kd.h> |
| 59 | #include <linux/init.h> |
| 60 | #include <linux/slab.h> |
| 61 | #include <linux/vt_kern.h> |
| 62 | #include <linux/selection.h> |
| 63 | #include <linux/spinlock.h> |
| 64 | #include <linux/kref.h> |
| 65 | #include <linux/smp_lock.h> |
| 66 | #include <linux/ioport.h> |
| 67 | #include <linux/interrupt.h> |
| 68 | #include <linux/vmalloc.h> |
| 69 | |
| 70 | #include "sisusb.h" |
Adrian Bunk | df47e53 | 2006-04-15 11:17:27 +0200 | [diff] [blame] | 71 | #include "sisusb_init.h" |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 72 | |
| 73 | #ifdef INCL_SISUSB_CON |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 74 | |
| 75 | #define sisusbcon_writew(val, addr) (*(addr) = (val)) |
| 76 | #define sisusbcon_readw(addr) (*(addr)) |
| 77 | #define sisusbcon_memmovew(d, s, c) memmove(d, s, c) |
| 78 | #define sisusbcon_memcpyw(d, s, c) memcpy(d, s, c) |
| 79 | |
| 80 | /* vc_data -> sisusb conversion table */ |
| 81 | static struct sisusb_usb_data *mysisusbs[MAX_NR_CONSOLES]; |
| 82 | |
| 83 | /* Forward declaration */ |
| 84 | static const struct consw sisusb_con; |
| 85 | |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 86 | static inline void |
| 87 | sisusbcon_memsetw(u16 *s, u16 c, unsigned int count) |
| 88 | { |
| 89 | count /= 2; |
| 90 | while (count--) |
| 91 | sisusbcon_writew(c, s++); |
| 92 | } |
| 93 | |
| 94 | static inline void |
| 95 | sisusb_initialize(struct sisusb_usb_data *sisusb) |
| 96 | { |
| 97 | /* Reset cursor and start address */ |
| 98 | if (sisusb_setidxreg(sisusb, SISCR, 0x0c, 0x00)) |
| 99 | return; |
| 100 | if (sisusb_setidxreg(sisusb, SISCR, 0x0d, 0x00)) |
| 101 | return; |
| 102 | if (sisusb_setidxreg(sisusb, SISCR, 0x0e, 0x00)) |
| 103 | return; |
| 104 | sisusb_setidxreg(sisusb, SISCR, 0x0f, 0x00); |
| 105 | } |
| 106 | |
| 107 | static inline void |
| 108 | sisusbcon_set_start_address(struct sisusb_usb_data *sisusb, struct vc_data *c) |
| 109 | { |
| 110 | sisusb->cur_start_addr = (c->vc_visible_origin - sisusb->scrbuf) / 2; |
| 111 | |
| 112 | sisusb_setidxreg(sisusb, SISCR, 0x0c, (sisusb->cur_start_addr >> 8)); |
| 113 | sisusb_setidxreg(sisusb, SISCR, 0x0d, (sisusb->cur_start_addr & 0xff)); |
| 114 | } |
| 115 | |
| 116 | void |
| 117 | sisusb_set_cursor(struct sisusb_usb_data *sisusb, unsigned int location) |
| 118 | { |
| 119 | if (sisusb->sisusb_cursor_loc == location) |
| 120 | return; |
| 121 | |
| 122 | sisusb->sisusb_cursor_loc = location; |
| 123 | |
| 124 | /* Hardware bug: Text cursor appears twice or not at all |
| 125 | * at some positions. Work around it with the cursor skew |
| 126 | * bits. |
| 127 | */ |
| 128 | |
| 129 | if ((location & 0x0007) == 0x0007) { |
| 130 | sisusb->bad_cursor_pos = 1; |
| 131 | location--; |
| 132 | if (sisusb_setidxregandor(sisusb, SISCR, 0x0b, 0x1f, 0x20)) |
| 133 | return; |
| 134 | } else if (sisusb->bad_cursor_pos) { |
| 135 | if (sisusb_setidxregand(sisusb, SISCR, 0x0b, 0x1f)) |
| 136 | return; |
| 137 | sisusb->bad_cursor_pos = 0; |
| 138 | } |
| 139 | |
| 140 | if (sisusb_setidxreg(sisusb, SISCR, 0x0e, (location >> 8))) |
| 141 | return; |
| 142 | sisusb_setidxreg(sisusb, SISCR, 0x0f, (location & 0xff)); |
| 143 | } |
| 144 | |
| 145 | static inline struct sisusb_usb_data * |
| 146 | sisusb_get_sisusb(unsigned short console) |
| 147 | { |
| 148 | return mysisusbs[console]; |
| 149 | } |
| 150 | |
| 151 | static inline int |
| 152 | sisusb_sisusb_valid(struct sisusb_usb_data *sisusb) |
| 153 | { |
| 154 | if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) |
| 155 | return 0; |
| 156 | |
| 157 | return 1; |
| 158 | } |
| 159 | |
| 160 | static struct sisusb_usb_data * |
| 161 | sisusb_get_sisusb_lock_and_check(unsigned short console) |
| 162 | { |
| 163 | struct sisusb_usb_data *sisusb; |
| 164 | |
| 165 | /* We can't handle console calls in non-schedulable |
| 166 | * context due to our locks and the USB transport. |
| 167 | * So we simply ignore them. This should only affect |
| 168 | * some calls to printk. |
| 169 | */ |
| 170 | if (in_atomic()) |
| 171 | return NULL; |
| 172 | |
| 173 | if (!(sisusb = sisusb_get_sisusb(console))) |
| 174 | return NULL; |
| 175 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 176 | mutex_lock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 177 | |
| 178 | if (!sisusb_sisusb_valid(sisusb) || |
| 179 | !sisusb->havethisconsole[console]) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 180 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 181 | return NULL; |
| 182 | } |
| 183 | |
| 184 | return sisusb; |
| 185 | } |
| 186 | |
| 187 | static int |
| 188 | sisusb_is_inactive(struct vc_data *c, struct sisusb_usb_data *sisusb) |
| 189 | { |
| 190 | if (sisusb->is_gfx || |
| 191 | sisusb->textmodedestroyed || |
| 192 | c->vc_mode != KD_TEXT) |
| 193 | return 1; |
| 194 | |
| 195 | return 0; |
| 196 | } |
| 197 | |
| 198 | /* con_startup console interface routine */ |
| 199 | static const char * |
| 200 | sisusbcon_startup(void) |
| 201 | { |
| 202 | return "SISUSBCON"; |
| 203 | } |
| 204 | |
| 205 | /* con_init console interface routine */ |
| 206 | static void |
| 207 | sisusbcon_init(struct vc_data *c, int init) |
| 208 | { |
| 209 | struct sisusb_usb_data *sisusb; |
| 210 | int cols, rows; |
| 211 | |
| 212 | /* This is called by take_over_console(), |
| 213 | * ie by us/under our control. It is |
| 214 | * only called after text mode and fonts |
| 215 | * are set up/restored. |
| 216 | */ |
| 217 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 218 | mutex_lock(&disconnect_mutex); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 219 | |
| 220 | if (!(sisusb = sisusb_get_sisusb(c->vc_num))) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 221 | mutex_unlock(&disconnect_mutex); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 222 | return; |
| 223 | } |
| 224 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 225 | mutex_lock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 226 | |
| 227 | if (!sisusb_sisusb_valid(sisusb)) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 228 | mutex_unlock(&sisusb->lock); |
| 229 | mutex_unlock(&disconnect_mutex); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 230 | return; |
| 231 | } |
| 232 | |
| 233 | c->vc_can_do_color = 1; |
| 234 | |
| 235 | c->vc_complement_mask = 0x7700; |
| 236 | |
| 237 | c->vc_hi_font_mask = sisusb->current_font_512 ? 0x0800 : 0; |
| 238 | |
| 239 | sisusb->haveconsole = 1; |
| 240 | |
| 241 | sisusb->havethisconsole[c->vc_num] = 1; |
| 242 | |
| 243 | /* We only support 640x400 */ |
| 244 | c->vc_scan_lines = 400; |
| 245 | |
| 246 | c->vc_font.height = sisusb->current_font_height; |
| 247 | |
| 248 | /* We only support width = 8 */ |
| 249 | cols = 80; |
| 250 | rows = c->vc_scan_lines / c->vc_font.height; |
| 251 | |
| 252 | /* Increment usage count for our sisusb. |
| 253 | * Doing so saves us from upping/downing |
| 254 | * the disconnect semaphore; we can't |
| 255 | * lose our sisusb until this is undone |
| 256 | * in con_deinit. For all other console |
| 257 | * interface functions, it suffices to |
| 258 | * use sisusb->lock and do a quick check |
| 259 | * of sisusb for device disconnection. |
| 260 | */ |
| 261 | kref_get(&sisusb->kref); |
| 262 | |
| 263 | if (!*c->vc_uni_pagedir_loc) |
| 264 | con_set_default_unimap(c); |
| 265 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 266 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 267 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 268 | mutex_unlock(&disconnect_mutex); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 269 | |
| 270 | if (init) { |
| 271 | c->vc_cols = cols; |
| 272 | c->vc_rows = rows; |
| 273 | } else |
| 274 | vc_resize(c, cols, rows); |
| 275 | } |
| 276 | |
| 277 | /* con_deinit console interface routine */ |
| 278 | static void |
| 279 | sisusbcon_deinit(struct vc_data *c) |
| 280 | { |
| 281 | struct sisusb_usb_data *sisusb; |
| 282 | int i; |
| 283 | |
| 284 | /* This is called by take_over_console() |
| 285 | * and others, ie not under our control. |
| 286 | */ |
| 287 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 288 | mutex_lock(&disconnect_mutex); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 289 | |
| 290 | if (!(sisusb = sisusb_get_sisusb(c->vc_num))) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 291 | mutex_unlock(&disconnect_mutex); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 292 | return; |
| 293 | } |
| 294 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 295 | mutex_lock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 296 | |
| 297 | /* Clear ourselves in mysisusbs */ |
| 298 | mysisusbs[c->vc_num] = NULL; |
| 299 | |
| 300 | sisusb->havethisconsole[c->vc_num] = 0; |
| 301 | |
| 302 | /* Free our font buffer if all consoles are gone */ |
| 303 | if (sisusb->font_backup) { |
| 304 | for(i = 0; i < MAX_NR_CONSOLES; i++) { |
| 305 | if (sisusb->havethisconsole[c->vc_num]) |
| 306 | break; |
| 307 | } |
| 308 | if (i == MAX_NR_CONSOLES) { |
| 309 | vfree(sisusb->font_backup); |
| 310 | sisusb->font_backup = NULL; |
| 311 | } |
| 312 | } |
| 313 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 314 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 315 | |
| 316 | /* decrement the usage count on our sisusb */ |
| 317 | kref_put(&sisusb->kref, sisusb_delete); |
| 318 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 319 | mutex_unlock(&disconnect_mutex); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 320 | } |
| 321 | |
| 322 | /* interface routine */ |
| 323 | static u8 |
| 324 | sisusbcon_build_attr(struct vc_data *c, u8 color, u8 intensity, |
| 325 | u8 blink, u8 underline, u8 reverse) |
| 326 | { |
| 327 | u8 attr = color; |
| 328 | |
| 329 | if (underline) |
| 330 | attr = (attr & 0xf0) | c->vc_ulcolor; |
| 331 | else if (intensity == 0) |
| 332 | attr = (attr & 0xf0) | c->vc_halfcolor; |
| 333 | |
| 334 | if (reverse) |
| 335 | attr = ((attr) & 0x88) | |
| 336 | ((((attr) >> 4) | |
| 337 | ((attr) << 4)) & 0x77); |
| 338 | |
| 339 | if (blink) |
| 340 | attr ^= 0x80; |
| 341 | |
| 342 | if (intensity == 2) |
| 343 | attr ^= 0x08; |
| 344 | |
| 345 | return attr; |
| 346 | } |
| 347 | |
| 348 | /* Interface routine */ |
| 349 | static void |
| 350 | sisusbcon_invert_region(struct vc_data *vc, u16 *p, int count) |
| 351 | { |
| 352 | /* Invert a region. This is called with a pointer |
| 353 | * to the console's internal screen buffer. So we |
| 354 | * simply do the inversion there and rely on |
| 355 | * a call to putc(s) to update the real screen. |
| 356 | */ |
| 357 | |
| 358 | while (count--) { |
| 359 | u16 a = sisusbcon_readw(p); |
| 360 | |
| 361 | a = ((a) & 0x88ff) | |
| 362 | (((a) & 0x7000) >> 4) | |
| 363 | (((a) & 0x0700) << 4); |
| 364 | |
| 365 | sisusbcon_writew(a, p++); |
| 366 | } |
| 367 | } |
| 368 | |
| 369 | #define SISUSB_VADDR(x,y) \ |
| 370 | ((u16 *)c->vc_origin + \ |
| 371 | (y) * sisusb->sisusb_num_columns + \ |
| 372 | (x)) |
| 373 | |
| 374 | #define SISUSB_HADDR(x,y) \ |
| 375 | ((u16 *)(sisusb->vrambase + (c->vc_origin - sisusb->scrbuf)) + \ |
| 376 | (y) * sisusb->sisusb_num_columns + \ |
| 377 | (x)) |
| 378 | |
| 379 | /* Interface routine */ |
| 380 | static void |
| 381 | sisusbcon_putc(struct vc_data *c, int ch, int y, int x) |
| 382 | { |
| 383 | struct sisusb_usb_data *sisusb; |
| 384 | ssize_t written; |
| 385 | |
| 386 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) |
| 387 | return; |
| 388 | |
| 389 | /* sisusb->lock is down */ |
| 390 | |
| 391 | /* Don't need to put the character into buffer ourselves, |
| 392 | * because the vt does this BEFORE calling us. |
| 393 | */ |
| 394 | #if 0 |
| 395 | sisusbcon_writew(ch, SISUSB_VADDR(x, y)); |
| 396 | #endif |
| 397 | |
| 398 | if (sisusb_is_inactive(c, sisusb)) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 399 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 400 | return; |
| 401 | } |
| 402 | |
| 403 | |
| 404 | sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(x, y), |
Andrew Morton | c067dfc | 2007-01-03 16:45:21 -0800 | [diff] [blame] | 405 | (long)SISUSB_HADDR(x, y), 2, &written); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 406 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 407 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 408 | } |
| 409 | |
| 410 | /* Interface routine */ |
| 411 | static void |
| 412 | sisusbcon_putcs(struct vc_data *c, const unsigned short *s, |
| 413 | int count, int y, int x) |
| 414 | { |
| 415 | struct sisusb_usb_data *sisusb; |
| 416 | ssize_t written; |
| 417 | u16 *dest; |
| 418 | int i; |
| 419 | |
| 420 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) |
| 421 | return; |
| 422 | |
| 423 | /* sisusb->lock is down */ |
| 424 | |
| 425 | /* Need to put the characters into the buffer ourselves, |
| 426 | * because the vt does this AFTER calling us. |
| 427 | */ |
| 428 | |
| 429 | dest = SISUSB_VADDR(x, y); |
| 430 | |
| 431 | for (i = count; i > 0; i--) |
| 432 | sisusbcon_writew(sisusbcon_readw(s++), dest++); |
| 433 | |
| 434 | if (sisusb_is_inactive(c, sisusb)) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 435 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 436 | return; |
| 437 | } |
| 438 | |
| 439 | sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(x, y), |
Andrew Morton | c067dfc | 2007-01-03 16:45:21 -0800 | [diff] [blame] | 440 | (long)SISUSB_HADDR(x, y), count * 2, &written); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 441 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 442 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 443 | } |
| 444 | |
| 445 | /* Interface routine */ |
| 446 | static void |
| 447 | sisusbcon_clear(struct vc_data *c, int y, int x, int height, int width) |
| 448 | { |
| 449 | struct sisusb_usb_data *sisusb; |
| 450 | u16 eattr = c->vc_video_erase_char; |
| 451 | ssize_t written; |
| 452 | int i, length, cols; |
| 453 | u16 *dest; |
| 454 | |
| 455 | if (width <= 0 || height <= 0) |
| 456 | return; |
| 457 | |
| 458 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) |
| 459 | return; |
| 460 | |
| 461 | /* sisusb->lock is down */ |
| 462 | |
| 463 | /* Need to clear buffer ourselves, because the vt does |
| 464 | * this AFTER calling us. |
| 465 | */ |
| 466 | |
| 467 | dest = SISUSB_VADDR(x, y); |
| 468 | |
| 469 | cols = sisusb->sisusb_num_columns; |
| 470 | |
| 471 | if (width > cols) |
| 472 | width = cols; |
| 473 | |
| 474 | if (x == 0 && width >= c->vc_cols) { |
| 475 | |
| 476 | sisusbcon_memsetw(dest, eattr, height * cols * 2); |
| 477 | |
| 478 | } else { |
| 479 | |
| 480 | for (i = height; i > 0; i--, dest += cols) |
| 481 | sisusbcon_memsetw(dest, eattr, width * 2); |
| 482 | |
| 483 | } |
| 484 | |
| 485 | if (sisusb_is_inactive(c, sisusb)) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 486 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 487 | return; |
| 488 | } |
| 489 | |
| 490 | length = ((height * cols) - x - (cols - width - x)) * 2; |
| 491 | |
| 492 | |
| 493 | sisusb_copy_memory(sisusb, (unsigned char *)SISUSB_VADDR(x, y), |
Andrew Morton | c067dfc | 2007-01-03 16:45:21 -0800 | [diff] [blame] | 494 | (long)SISUSB_HADDR(x, y), length, &written); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 495 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 496 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 497 | } |
| 498 | |
| 499 | /* Interface routine */ |
| 500 | static void |
| 501 | sisusbcon_bmove(struct vc_data *c, int sy, int sx, |
| 502 | int dy, int dx, int height, int width) |
| 503 | { |
| 504 | struct sisusb_usb_data *sisusb; |
| 505 | ssize_t written; |
| 506 | int cols, length; |
| 507 | #if 0 |
| 508 | u16 *src, *dest; |
| 509 | int i; |
| 510 | #endif |
| 511 | |
| 512 | if (width <= 0 || height <= 0) |
| 513 | return; |
| 514 | |
| 515 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) |
| 516 | return; |
| 517 | |
| 518 | /* sisusb->lock is down */ |
| 519 | |
| 520 | cols = sisusb->sisusb_num_columns; |
| 521 | |
| 522 | /* Don't need to move data outselves, because |
| 523 | * vt does this BEFORE calling us. |
| 524 | * This is only used by vt's insert/deletechar. |
| 525 | */ |
| 526 | #if 0 |
| 527 | if (sx == 0 && dx == 0 && width >= c->vc_cols && width <= cols) { |
| 528 | |
| 529 | sisusbcon_memmovew(SISUSB_VADDR(0, dy), SISUSB_VADDR(0, sy), |
| 530 | height * width * 2); |
| 531 | |
| 532 | } else if (dy < sy || (dy == sy && dx < sx)) { |
| 533 | |
| 534 | src = SISUSB_VADDR(sx, sy); |
| 535 | dest = SISUSB_VADDR(dx, dy); |
| 536 | |
| 537 | for (i = height; i > 0; i--) { |
| 538 | sisusbcon_memmovew(dest, src, width * 2); |
| 539 | src += cols; |
| 540 | dest += cols; |
| 541 | } |
| 542 | |
| 543 | } else { |
| 544 | |
| 545 | src = SISUSB_VADDR(sx, sy + height - 1); |
| 546 | dest = SISUSB_VADDR(dx, dy + height - 1); |
| 547 | |
| 548 | for (i = height; i > 0; i--) { |
| 549 | sisusbcon_memmovew(dest, src, width * 2); |
| 550 | src -= cols; |
| 551 | dest -= cols; |
| 552 | } |
| 553 | |
| 554 | } |
| 555 | #endif |
| 556 | |
| 557 | if (sisusb_is_inactive(c, sisusb)) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 558 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 559 | return; |
| 560 | } |
| 561 | |
| 562 | length = ((height * cols) - dx - (cols - width - dx)) * 2; |
| 563 | |
| 564 | |
| 565 | sisusb_copy_memory(sisusb, (unsigned char *)SISUSB_VADDR(dx, dy), |
Andrew Morton | c067dfc | 2007-01-03 16:45:21 -0800 | [diff] [blame] | 566 | (long)SISUSB_HADDR(dx, dy), length, &written); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 567 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 568 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 569 | } |
| 570 | |
| 571 | /* interface routine */ |
| 572 | static int |
| 573 | sisusbcon_switch(struct vc_data *c) |
| 574 | { |
| 575 | struct sisusb_usb_data *sisusb; |
| 576 | ssize_t written; |
| 577 | int length; |
| 578 | |
| 579 | /* Returnvalue 0 means we have fully restored screen, |
| 580 | * and vt doesn't need to call do_update_region(). |
| 581 | * Returnvalue != 0 naturally means the opposite. |
| 582 | */ |
| 583 | |
| 584 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) |
| 585 | return 0; |
| 586 | |
| 587 | /* sisusb->lock is down */ |
| 588 | |
| 589 | /* Don't write to screen if in gfx mode */ |
| 590 | if (sisusb_is_inactive(c, sisusb)) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 591 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 592 | return 0; |
| 593 | } |
| 594 | |
| 595 | /* That really should not happen. It would mean we are |
| 596 | * being called while the vc is using its private buffer |
| 597 | * as origin. |
| 598 | */ |
| 599 | if (c->vc_origin == (unsigned long)c->vc_screenbuf) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 600 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 601 | printk(KERN_DEBUG "sisusb: ASSERT ORIGIN != SCREENBUF!\n"); |
| 602 | return 0; |
| 603 | } |
| 604 | |
| 605 | /* Check that we don't copy too much */ |
| 606 | length = min((int)c->vc_screenbuf_size, |
| 607 | (int)(sisusb->scrbuf + sisusb->scrbuf_size - c->vc_origin)); |
| 608 | |
| 609 | /* Restore the screen contents */ |
| 610 | sisusbcon_memcpyw((u16 *)c->vc_origin, (u16 *)c->vc_screenbuf, |
| 611 | length); |
| 612 | |
| 613 | sisusb_copy_memory(sisusb, (unsigned char *)c->vc_origin, |
Andrew Morton | c067dfc | 2007-01-03 16:45:21 -0800 | [diff] [blame] | 614 | (long)SISUSB_HADDR(0, 0), |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 615 | length, &written); |
| 616 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 617 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 618 | |
| 619 | return 0; |
| 620 | } |
| 621 | |
| 622 | /* interface routine */ |
| 623 | static void |
| 624 | sisusbcon_save_screen(struct vc_data *c) |
| 625 | { |
| 626 | struct sisusb_usb_data *sisusb; |
| 627 | int length; |
| 628 | |
| 629 | /* Save the current screen contents to vc's private |
| 630 | * buffer. |
| 631 | */ |
| 632 | |
| 633 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) |
| 634 | return; |
| 635 | |
| 636 | /* sisusb->lock is down */ |
| 637 | |
| 638 | if (sisusb_is_inactive(c, sisusb)) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 639 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 640 | return; |
| 641 | } |
| 642 | |
| 643 | /* Check that we don't copy too much */ |
| 644 | length = min((int)c->vc_screenbuf_size, |
| 645 | (int)(sisusb->scrbuf + sisusb->scrbuf_size - c->vc_origin)); |
| 646 | |
| 647 | /* Save the screen contents to vc's private buffer */ |
| 648 | sisusbcon_memcpyw((u16 *)c->vc_screenbuf, (u16 *)c->vc_origin, |
| 649 | length); |
| 650 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 651 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 652 | } |
| 653 | |
| 654 | /* interface routine */ |
| 655 | static int |
| 656 | sisusbcon_set_palette(struct vc_data *c, unsigned char *table) |
| 657 | { |
| 658 | struct sisusb_usb_data *sisusb; |
| 659 | int i, j; |
| 660 | |
| 661 | /* Return value not used by vt */ |
| 662 | |
| 663 | if (!CON_IS_VISIBLE(c)) |
| 664 | return -EINVAL; |
| 665 | |
| 666 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) |
| 667 | return -EINVAL; |
| 668 | |
| 669 | /* sisusb->lock is down */ |
| 670 | |
| 671 | if (sisusb_is_inactive(c, sisusb)) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 672 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 673 | return -EINVAL; |
| 674 | } |
| 675 | |
| 676 | for (i = j = 0; i < 16; i++) { |
| 677 | if (sisusb_setreg(sisusb, SISCOLIDX, table[i])) |
| 678 | break; |
| 679 | if (sisusb_setreg(sisusb, SISCOLDATA, c->vc_palette[j++] >> 2)) |
| 680 | break; |
| 681 | if (sisusb_setreg(sisusb, SISCOLDATA, c->vc_palette[j++] >> 2)) |
| 682 | break; |
| 683 | if (sisusb_setreg(sisusb, SISCOLDATA, c->vc_palette[j++] >> 2)) |
| 684 | break; |
| 685 | } |
| 686 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 687 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 688 | |
| 689 | return 0; |
| 690 | } |
| 691 | |
| 692 | /* interface routine */ |
| 693 | static int |
| 694 | sisusbcon_blank(struct vc_data *c, int blank, int mode_switch) |
| 695 | { |
| 696 | struct sisusb_usb_data *sisusb; |
| 697 | u8 sr1, cr17, pmreg, cr63; |
| 698 | ssize_t written; |
| 699 | int ret = 0; |
| 700 | |
| 701 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) |
| 702 | return 0; |
| 703 | |
| 704 | /* sisusb->lock is down */ |
| 705 | |
| 706 | if (mode_switch) |
| 707 | sisusb->is_gfx = blank ? 1 : 0; |
| 708 | |
| 709 | if (sisusb_is_inactive(c, sisusb)) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 710 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 711 | return 0; |
| 712 | } |
| 713 | |
| 714 | switch (blank) { |
| 715 | |
| 716 | case 1: /* Normal blanking: Clear screen */ |
| 717 | case -1: |
| 718 | sisusbcon_memsetw((u16 *)c->vc_origin, |
| 719 | c->vc_video_erase_char, |
| 720 | c->vc_screenbuf_size); |
| 721 | sisusb_copy_memory(sisusb, |
| 722 | (unsigned char *)c->vc_origin, |
| 723 | (u32)(sisusb->vrambase + |
| 724 | (c->vc_origin - sisusb->scrbuf)), |
| 725 | c->vc_screenbuf_size, &written); |
| 726 | sisusb->con_blanked = 1; |
| 727 | ret = 1; |
| 728 | break; |
| 729 | |
| 730 | default: /* VESA blanking */ |
| 731 | switch (blank) { |
| 732 | case 0: /* Unblank */ |
| 733 | sr1 = 0x00; |
| 734 | cr17 = 0x80; |
| 735 | pmreg = 0x00; |
| 736 | cr63 = 0x00; |
| 737 | ret = 1; |
| 738 | sisusb->con_blanked = 0; |
| 739 | break; |
| 740 | case VESA_VSYNC_SUSPEND + 1: |
| 741 | sr1 = 0x20; |
| 742 | cr17 = 0x80; |
| 743 | pmreg = 0x80; |
| 744 | cr63 = 0x40; |
| 745 | break; |
| 746 | case VESA_HSYNC_SUSPEND + 1: |
| 747 | sr1 = 0x20; |
| 748 | cr17 = 0x80; |
| 749 | pmreg = 0x40; |
| 750 | cr63 = 0x40; |
| 751 | break; |
| 752 | case VESA_POWERDOWN + 1: |
| 753 | sr1 = 0x20; |
| 754 | cr17 = 0x00; |
| 755 | pmreg = 0xc0; |
| 756 | cr63 = 0x40; |
| 757 | break; |
| 758 | default: |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 759 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 760 | return -EINVAL; |
| 761 | } |
| 762 | |
| 763 | sisusb_setidxregandor(sisusb, SISSR, 0x01, ~0x20, sr1); |
| 764 | sisusb_setidxregandor(sisusb, SISCR, 0x17, 0x7f, cr17); |
| 765 | sisusb_setidxregandor(sisusb, SISSR, 0x1f, 0x3f, pmreg); |
| 766 | sisusb_setidxregandor(sisusb, SISCR, 0x63, 0xbf, cr63); |
| 767 | |
| 768 | } |
| 769 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 770 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 771 | |
| 772 | return ret; |
| 773 | } |
| 774 | |
| 775 | /* interface routine */ |
| 776 | static int |
| 777 | sisusbcon_scrolldelta(struct vc_data *c, int lines) |
| 778 | { |
| 779 | struct sisusb_usb_data *sisusb; |
| 780 | int margin = c->vc_size_row * 4; |
| 781 | int ul, we, p, st; |
| 782 | |
| 783 | /* The return value does not seem to be used */ |
| 784 | |
| 785 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) |
| 786 | return 0; |
| 787 | |
| 788 | /* sisusb->lock is down */ |
| 789 | |
| 790 | if (sisusb_is_inactive(c, sisusb)) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 791 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 792 | return 0; |
| 793 | } |
| 794 | |
| 795 | if (!lines) /* Turn scrollback off */ |
| 796 | c->vc_visible_origin = c->vc_origin; |
| 797 | else { |
| 798 | |
| 799 | if (sisusb->con_rolled_over > |
| 800 | (c->vc_scr_end - sisusb->scrbuf) + margin) { |
| 801 | |
| 802 | ul = c->vc_scr_end - sisusb->scrbuf; |
| 803 | we = sisusb->con_rolled_over + c->vc_size_row; |
| 804 | |
| 805 | } else { |
| 806 | |
| 807 | ul = 0; |
| 808 | we = sisusb->scrbuf_size; |
| 809 | |
| 810 | } |
| 811 | |
| 812 | p = (c->vc_visible_origin - sisusb->scrbuf - ul + we) % we + |
| 813 | lines * c->vc_size_row; |
| 814 | |
| 815 | st = (c->vc_origin - sisusb->scrbuf - ul + we) % we; |
| 816 | |
| 817 | if (st < 2 * margin) |
| 818 | margin = 0; |
| 819 | |
| 820 | if (p < margin) |
| 821 | p = 0; |
| 822 | |
| 823 | if (p > st - margin) |
| 824 | p = st; |
| 825 | |
| 826 | c->vc_visible_origin = sisusb->scrbuf + (p + ul) % we; |
| 827 | } |
| 828 | |
| 829 | sisusbcon_set_start_address(sisusb, c); |
| 830 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 831 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 832 | |
| 833 | return 1; |
| 834 | } |
| 835 | |
| 836 | /* Interface routine */ |
| 837 | static void |
| 838 | sisusbcon_cursor(struct vc_data *c, int mode) |
| 839 | { |
| 840 | struct sisusb_usb_data *sisusb; |
| 841 | int from, to, baseline; |
| 842 | |
| 843 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) |
| 844 | return; |
| 845 | |
| 846 | /* sisusb->lock is down */ |
| 847 | |
| 848 | if (sisusb_is_inactive(c, sisusb)) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 849 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 850 | return; |
| 851 | } |
| 852 | |
| 853 | if (c->vc_origin != c->vc_visible_origin) { |
| 854 | c->vc_visible_origin = c->vc_origin; |
| 855 | sisusbcon_set_start_address(sisusb, c); |
| 856 | } |
| 857 | |
| 858 | if (mode == CM_ERASE) { |
| 859 | sisusb_setidxregor(sisusb, SISCR, 0x0a, 0x20); |
| 860 | sisusb->sisusb_cursor_size_to = -1; |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 861 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 862 | return; |
| 863 | } |
| 864 | |
| 865 | sisusb_set_cursor(sisusb, (c->vc_pos - sisusb->scrbuf) / 2); |
| 866 | |
| 867 | baseline = c->vc_font.height - (c->vc_font.height < 10 ? 1 : 2); |
| 868 | |
| 869 | switch (c->vc_cursor_type & 0x0f) { |
| 870 | case CUR_BLOCK: from = 1; |
| 871 | to = c->vc_font.height; |
| 872 | break; |
| 873 | case CUR_TWO_THIRDS: from = c->vc_font.height / 3; |
| 874 | to = baseline; |
| 875 | break; |
| 876 | case CUR_LOWER_HALF: from = c->vc_font.height / 2; |
| 877 | to = baseline; |
| 878 | break; |
| 879 | case CUR_LOWER_THIRD: from = (c->vc_font.height * 2) / 3; |
| 880 | to = baseline; |
| 881 | break; |
| 882 | case CUR_NONE: from = 31; |
| 883 | to = 30; |
| 884 | break; |
| 885 | default: |
| 886 | case CUR_UNDERLINE: from = baseline - 1; |
| 887 | to = baseline; |
| 888 | break; |
| 889 | } |
| 890 | |
| 891 | if (sisusb->sisusb_cursor_size_from != from || |
| 892 | sisusb->sisusb_cursor_size_to != to) { |
| 893 | |
| 894 | sisusb_setidxreg(sisusb, SISCR, 0x0a, from); |
| 895 | sisusb_setidxregandor(sisusb, SISCR, 0x0b, 0xe0, to); |
| 896 | |
| 897 | sisusb->sisusb_cursor_size_from = from; |
| 898 | sisusb->sisusb_cursor_size_to = to; |
| 899 | } |
| 900 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 901 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 902 | } |
| 903 | |
| 904 | static int |
| 905 | sisusbcon_scroll_area(struct vc_data *c, struct sisusb_usb_data *sisusb, |
| 906 | int t, int b, int dir, int lines) |
| 907 | { |
| 908 | int cols = sisusb->sisusb_num_columns; |
| 909 | int length = ((b - t) * cols) * 2; |
| 910 | u16 eattr = c->vc_video_erase_char; |
| 911 | ssize_t written; |
| 912 | |
| 913 | /* sisusb->lock is down */ |
| 914 | |
| 915 | /* Scroll an area which does not match the |
| 916 | * visible screen's dimensions. This needs |
| 917 | * to be done separately, as it does not |
| 918 | * use hardware panning. |
| 919 | */ |
| 920 | |
| 921 | switch (dir) { |
| 922 | |
| 923 | case SM_UP: |
| 924 | sisusbcon_memmovew(SISUSB_VADDR(0, t), |
| 925 | SISUSB_VADDR(0, t + lines), |
| 926 | (b - t - lines) * cols * 2); |
| 927 | sisusbcon_memsetw(SISUSB_VADDR(0, b - lines), eattr, |
| 928 | lines * cols * 2); |
| 929 | break; |
| 930 | |
| 931 | case SM_DOWN: |
| 932 | sisusbcon_memmovew(SISUSB_VADDR(0, t + lines), |
| 933 | SISUSB_VADDR(0, t), |
| 934 | (b - t - lines) * cols * 2); |
| 935 | sisusbcon_memsetw(SISUSB_VADDR(0, t), eattr, |
| 936 | lines * cols * 2); |
| 937 | break; |
| 938 | } |
| 939 | |
| 940 | sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(0, t), |
Andrew Morton | c067dfc | 2007-01-03 16:45:21 -0800 | [diff] [blame] | 941 | (long)SISUSB_HADDR(0, t), length, &written); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 942 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 943 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 944 | |
| 945 | return 1; |
| 946 | } |
| 947 | |
| 948 | /* Interface routine */ |
| 949 | static int |
| 950 | sisusbcon_scroll(struct vc_data *c, int t, int b, int dir, int lines) |
| 951 | { |
| 952 | struct sisusb_usb_data *sisusb; |
| 953 | u16 eattr = c->vc_video_erase_char; |
| 954 | ssize_t written; |
| 955 | int copyall = 0; |
| 956 | unsigned long oldorigin; |
| 957 | unsigned int delta = lines * c->vc_size_row; |
| 958 | u32 originoffset; |
| 959 | |
| 960 | /* Returning != 0 means we have done the scrolling successfully. |
| 961 | * Returning 0 makes vt do the scrolling on its own. |
| 962 | * Note that con_scroll is only called if the console is |
| 963 | * visible. In that case, the origin should be our buffer, |
| 964 | * not the vt's private one. |
| 965 | */ |
| 966 | |
| 967 | if (!lines) |
| 968 | return 1; |
| 969 | |
| 970 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) |
| 971 | return 0; |
| 972 | |
| 973 | /* sisusb->lock is down */ |
| 974 | |
| 975 | if (sisusb_is_inactive(c, sisusb)) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 976 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 977 | return 0; |
| 978 | } |
| 979 | |
| 980 | /* Special case */ |
| 981 | if (t || b != c->vc_rows) |
| 982 | return sisusbcon_scroll_area(c, sisusb, t, b, dir, lines); |
| 983 | |
| 984 | if (c->vc_origin != c->vc_visible_origin) { |
| 985 | c->vc_visible_origin = c->vc_origin; |
| 986 | sisusbcon_set_start_address(sisusb, c); |
| 987 | } |
| 988 | |
| 989 | /* limit amount to maximum realistic size */ |
| 990 | if (lines > c->vc_rows) |
| 991 | lines = c->vc_rows; |
| 992 | |
| 993 | oldorigin = c->vc_origin; |
| 994 | |
| 995 | switch (dir) { |
| 996 | |
| 997 | case SM_UP: |
| 998 | |
| 999 | if (c->vc_scr_end + delta >= |
| 1000 | sisusb->scrbuf + sisusb->scrbuf_size) { |
| 1001 | sisusbcon_memcpyw((u16 *)sisusb->scrbuf, |
| 1002 | (u16 *)(oldorigin + delta), |
| 1003 | c->vc_screenbuf_size - delta); |
| 1004 | c->vc_origin = sisusb->scrbuf; |
| 1005 | sisusb->con_rolled_over = oldorigin - sisusb->scrbuf; |
| 1006 | copyall = 1; |
| 1007 | } else |
| 1008 | c->vc_origin += delta; |
| 1009 | |
| 1010 | sisusbcon_memsetw( |
| 1011 | (u16 *)(c->vc_origin + c->vc_screenbuf_size - delta), |
| 1012 | eattr, delta); |
| 1013 | |
| 1014 | break; |
| 1015 | |
| 1016 | case SM_DOWN: |
| 1017 | |
| 1018 | if (oldorigin - delta < sisusb->scrbuf) { |
| 1019 | sisusbcon_memmovew((u16 *)(sisusb->scrbuf + |
| 1020 | sisusb->scrbuf_size - |
| 1021 | c->vc_screenbuf_size + |
| 1022 | delta), |
| 1023 | (u16 *)oldorigin, |
| 1024 | c->vc_screenbuf_size - delta); |
| 1025 | c->vc_origin = sisusb->scrbuf + |
| 1026 | sisusb->scrbuf_size - |
| 1027 | c->vc_screenbuf_size; |
| 1028 | sisusb->con_rolled_over = 0; |
| 1029 | copyall = 1; |
| 1030 | } else |
| 1031 | c->vc_origin -= delta; |
| 1032 | |
| 1033 | c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size; |
| 1034 | |
| 1035 | scr_memsetw((u16 *)(c->vc_origin), eattr, delta); |
| 1036 | |
| 1037 | break; |
| 1038 | } |
| 1039 | |
| 1040 | originoffset = (u32)(c->vc_origin - sisusb->scrbuf); |
| 1041 | |
| 1042 | if (copyall) |
| 1043 | sisusb_copy_memory(sisusb, |
| 1044 | (char *)c->vc_origin, |
| 1045 | (u32)(sisusb->vrambase + originoffset), |
| 1046 | c->vc_screenbuf_size, &written); |
| 1047 | else if (dir == SM_UP) |
| 1048 | sisusb_copy_memory(sisusb, |
| 1049 | (char *)c->vc_origin + c->vc_screenbuf_size - delta, |
| 1050 | (u32)sisusb->vrambase + originoffset + |
| 1051 | c->vc_screenbuf_size - delta, |
| 1052 | delta, &written); |
| 1053 | else |
| 1054 | sisusb_copy_memory(sisusb, |
| 1055 | (char *)c->vc_origin, |
| 1056 | (u32)(sisusb->vrambase + originoffset), |
| 1057 | delta, &written); |
| 1058 | |
| 1059 | c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size; |
| 1060 | c->vc_visible_origin = c->vc_origin; |
| 1061 | |
| 1062 | sisusbcon_set_start_address(sisusb, c); |
| 1063 | |
| 1064 | c->vc_pos = c->vc_pos - oldorigin + c->vc_origin; |
| 1065 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1066 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1067 | |
| 1068 | return 1; |
| 1069 | } |
| 1070 | |
| 1071 | /* Interface routine */ |
| 1072 | static int |
| 1073 | sisusbcon_set_origin(struct vc_data *c) |
| 1074 | { |
| 1075 | struct sisusb_usb_data *sisusb; |
| 1076 | |
| 1077 | /* Returning != 0 means we were successful. |
| 1078 | * Returning 0 will vt make to use its own |
| 1079 | * screenbuffer as the origin. |
| 1080 | */ |
| 1081 | |
| 1082 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) |
| 1083 | return 0; |
| 1084 | |
| 1085 | /* sisusb->lock is down */ |
| 1086 | |
| 1087 | if (sisusb_is_inactive(c, sisusb) || sisusb->con_blanked) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1088 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1089 | return 0; |
| 1090 | } |
| 1091 | |
| 1092 | c->vc_origin = c->vc_visible_origin = sisusb->scrbuf; |
| 1093 | |
| 1094 | sisusbcon_set_start_address(sisusb, c); |
| 1095 | |
| 1096 | sisusb->con_rolled_over = 0; |
| 1097 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1098 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1099 | |
| 1100 | return 1; |
| 1101 | } |
| 1102 | |
| 1103 | /* Interface routine */ |
| 1104 | static int |
| 1105 | sisusbcon_resize(struct vc_data *c, unsigned int newcols, unsigned int newrows) |
| 1106 | { |
| 1107 | struct sisusb_usb_data *sisusb; |
| 1108 | int fh; |
| 1109 | |
| 1110 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) |
| 1111 | return -ENODEV; |
| 1112 | |
| 1113 | fh = sisusb->current_font_height; |
| 1114 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1115 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1116 | |
| 1117 | /* We are quite unflexible as regards resizing. The vt code |
| 1118 | * handles sizes where the line length isn't equal the pitch |
| 1119 | * quite badly. As regards the rows, our panning tricks only |
| 1120 | * work well if the number of rows equals the visible number |
| 1121 | * of rows. |
| 1122 | */ |
| 1123 | |
| 1124 | if (newcols != 80 || c->vc_scan_lines / fh != newrows) |
| 1125 | return -EINVAL; |
| 1126 | |
| 1127 | return 0; |
| 1128 | } |
| 1129 | |
| 1130 | int |
| 1131 | sisusbcon_do_font_op(struct sisusb_usb_data *sisusb, int set, int slot, |
| 1132 | u8 *arg, int cmapsz, int ch512, int dorecalc, |
| 1133 | struct vc_data *c, int fh, int uplock) |
| 1134 | { |
| 1135 | int font_select = 0x00, i, err = 0; |
| 1136 | u32 offset = 0; |
| 1137 | u8 dummy; |
| 1138 | |
| 1139 | /* sisusb->lock is down */ |
| 1140 | |
| 1141 | /* |
| 1142 | * The default font is kept in slot 0. |
| 1143 | * A user font is loaded in slot 2 (256 ch) |
| 1144 | * or 2+3 (512 ch). |
| 1145 | */ |
| 1146 | |
| 1147 | if ((slot != 0 && slot != 2) || !fh) { |
| 1148 | if (uplock) |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1149 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1150 | return -EINVAL; |
| 1151 | } |
| 1152 | |
| 1153 | if (set) |
| 1154 | sisusb->font_slot = slot; |
| 1155 | |
| 1156 | /* Default font is always 256 */ |
| 1157 | if (slot == 0) |
| 1158 | ch512 = 0; |
| 1159 | else |
| 1160 | offset = 4 * cmapsz; |
| 1161 | |
| 1162 | font_select = (slot == 0) ? 0x00 : (ch512 ? 0x0e : 0x0a); |
| 1163 | |
| 1164 | err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x01); /* Reset */ |
| 1165 | err |= sisusb_setidxreg(sisusb, SISSR, 0x02, 0x04); /* Write to plane 2 */ |
| 1166 | err |= sisusb_setidxreg(sisusb, SISSR, 0x04, 0x07); /* Memory mode a0-bf */ |
| 1167 | err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x03); /* Reset */ |
| 1168 | |
| 1169 | if (err) |
| 1170 | goto font_op_error; |
| 1171 | |
| 1172 | err |= sisusb_setidxreg(sisusb, SISGR, 0x04, 0x03); /* Select plane read 2 */ |
| 1173 | err |= sisusb_setidxreg(sisusb, SISGR, 0x05, 0x00); /* Disable odd/even */ |
| 1174 | err |= sisusb_setidxreg(sisusb, SISGR, 0x06, 0x00); /* Address range a0-bf */ |
| 1175 | |
| 1176 | if (err) |
| 1177 | goto font_op_error; |
| 1178 | |
| 1179 | if (arg) { |
| 1180 | if (set) |
| 1181 | for (i = 0; i < cmapsz; i++) { |
| 1182 | err |= sisusb_writeb(sisusb, |
| 1183 | sisusb->vrambase + offset + i, |
| 1184 | arg[i]); |
| 1185 | if (err) |
| 1186 | break; |
| 1187 | } |
| 1188 | else |
| 1189 | for (i = 0; i < cmapsz; i++) { |
| 1190 | err |= sisusb_readb(sisusb, |
| 1191 | sisusb->vrambase + offset + i, |
| 1192 | &arg[i]); |
| 1193 | if (err) |
| 1194 | break; |
| 1195 | } |
| 1196 | |
| 1197 | /* |
| 1198 | * In 512-character mode, the character map is not contiguous if |
| 1199 | * we want to remain EGA compatible -- which we do |
| 1200 | */ |
| 1201 | |
| 1202 | if (ch512) { |
| 1203 | if (set) |
| 1204 | for (i = 0; i < cmapsz; i++) { |
| 1205 | err |= sisusb_writeb(sisusb, |
| 1206 | sisusb->vrambase + offset + |
| 1207 | (2 * cmapsz) + i, |
| 1208 | arg[cmapsz + i]); |
| 1209 | if (err) |
| 1210 | break; |
| 1211 | } |
| 1212 | else |
| 1213 | for (i = 0; i < cmapsz; i++) { |
| 1214 | err |= sisusb_readb(sisusb, |
| 1215 | sisusb->vrambase + offset + |
| 1216 | (2 * cmapsz) + i, |
| 1217 | &arg[cmapsz + i]); |
| 1218 | if (err) |
| 1219 | break; |
| 1220 | } |
| 1221 | } |
| 1222 | } |
| 1223 | |
| 1224 | if (err) |
| 1225 | goto font_op_error; |
| 1226 | |
| 1227 | err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x01); /* Reset */ |
| 1228 | err |= sisusb_setidxreg(sisusb, SISSR, 0x02, 0x03); /* Write to planes 0+1 */ |
| 1229 | err |= sisusb_setidxreg(sisusb, SISSR, 0x04, 0x03); /* Memory mode a0-bf */ |
| 1230 | if (set) |
| 1231 | sisusb_setidxreg(sisusb, SISSR, 0x03, font_select); |
| 1232 | err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x03); /* Reset end */ |
| 1233 | |
| 1234 | if (err) |
| 1235 | goto font_op_error; |
| 1236 | |
| 1237 | err |= sisusb_setidxreg(sisusb, SISGR, 0x04, 0x00); /* Select plane read 0 */ |
| 1238 | err |= sisusb_setidxreg(sisusb, SISGR, 0x05, 0x10); /* Enable odd/even */ |
| 1239 | err |= sisusb_setidxreg(sisusb, SISGR, 0x06, 0x06); /* Address range b8-bf */ |
| 1240 | |
| 1241 | if (err) |
| 1242 | goto font_op_error; |
| 1243 | |
| 1244 | if ((set) && (ch512 != sisusb->current_font_512)) { |
| 1245 | |
| 1246 | /* Font is shared among all our consoles. |
| 1247 | * And so is the hi_font_mask. |
| 1248 | */ |
| 1249 | for (i = 0; i < MAX_NR_CONSOLES; i++) { |
| 1250 | struct vc_data *c = vc_cons[i].d; |
| 1251 | if (c && c->vc_sw == &sisusb_con) |
| 1252 | c->vc_hi_font_mask = ch512 ? 0x0800 : 0; |
| 1253 | } |
| 1254 | |
| 1255 | sisusb->current_font_512 = ch512; |
| 1256 | |
| 1257 | /* color plane enable register: |
| 1258 | 256-char: enable intensity bit |
| 1259 | 512-char: disable intensity bit */ |
| 1260 | sisusb_getreg(sisusb, SISINPSTAT, &dummy); |
| 1261 | sisusb_setreg(sisusb, SISAR, 0x12); |
| 1262 | sisusb_setreg(sisusb, SISAR, ch512 ? 0x07 : 0x0f); |
| 1263 | |
| 1264 | sisusb_getreg(sisusb, SISINPSTAT, &dummy); |
| 1265 | sisusb_setreg(sisusb, SISAR, 0x20); |
| 1266 | sisusb_getreg(sisusb, SISINPSTAT, &dummy); |
| 1267 | } |
| 1268 | |
| 1269 | if (dorecalc) { |
| 1270 | |
| 1271 | /* |
| 1272 | * Adjust the screen to fit a font of a certain height |
| 1273 | */ |
| 1274 | |
| 1275 | unsigned char ovr, vde, fsr; |
| 1276 | int rows = 0, maxscan = 0; |
| 1277 | |
| 1278 | if (c) { |
| 1279 | |
| 1280 | /* Number of video rows */ |
| 1281 | rows = c->vc_scan_lines / fh; |
| 1282 | /* Scan lines to actually display-1 */ |
| 1283 | maxscan = rows * fh - 1; |
| 1284 | |
| 1285 | /*printk(KERN_DEBUG "sisusb recalc rows %d maxscan %d fh %d sl %d\n", |
| 1286 | rows, maxscan, fh, c->vc_scan_lines);*/ |
| 1287 | |
| 1288 | sisusb_getidxreg(sisusb, SISCR, 0x07, &ovr); |
| 1289 | vde = maxscan & 0xff; |
| 1290 | ovr = (ovr & 0xbd) | |
| 1291 | ((maxscan & 0x100) >> 7) | |
| 1292 | ((maxscan & 0x200) >> 3); |
| 1293 | sisusb_setidxreg(sisusb, SISCR, 0x07, ovr); |
| 1294 | sisusb_setidxreg(sisusb, SISCR, 0x12, vde); |
| 1295 | |
| 1296 | } |
| 1297 | |
| 1298 | sisusb_getidxreg(sisusb, SISCR, 0x09, &fsr); |
| 1299 | fsr = (fsr & 0xe0) | (fh - 1); |
| 1300 | sisusb_setidxreg(sisusb, SISCR, 0x09, fsr); |
| 1301 | sisusb->current_font_height = fh; |
| 1302 | |
| 1303 | sisusb->sisusb_cursor_size_from = -1; |
| 1304 | sisusb->sisusb_cursor_size_to = -1; |
| 1305 | |
| 1306 | } |
| 1307 | |
| 1308 | if (uplock) |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1309 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1310 | |
| 1311 | if (dorecalc && c) { |
| 1312 | int i, rows = c->vc_scan_lines / fh; |
| 1313 | |
| 1314 | /* Now adjust our consoles' size */ |
| 1315 | |
| 1316 | for (i = 0; i < MAX_NR_CONSOLES; i++) { |
| 1317 | struct vc_data *vc = vc_cons[i].d; |
| 1318 | |
| 1319 | if (vc && vc->vc_sw == &sisusb_con) { |
| 1320 | if (CON_IS_VISIBLE(vc)) { |
| 1321 | vc->vc_sw->con_cursor(vc, CM_DRAW); |
| 1322 | } |
| 1323 | vc->vc_font.height = fh; |
| 1324 | vc_resize(vc, 0, rows); |
| 1325 | } |
| 1326 | } |
| 1327 | } |
| 1328 | |
| 1329 | return 0; |
| 1330 | |
| 1331 | font_op_error: |
| 1332 | if (uplock) |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1333 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1334 | |
| 1335 | return -EIO; |
| 1336 | } |
| 1337 | |
| 1338 | /* Interface routine */ |
| 1339 | static int |
| 1340 | sisusbcon_font_set(struct vc_data *c, struct console_font *font, |
| 1341 | unsigned flags) |
| 1342 | { |
| 1343 | struct sisusb_usb_data *sisusb; |
| 1344 | unsigned charcount = font->charcount; |
| 1345 | |
| 1346 | if (font->width != 8 || (charcount != 256 && charcount != 512)) |
| 1347 | return -EINVAL; |
| 1348 | |
| 1349 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) |
| 1350 | return -ENODEV; |
| 1351 | |
| 1352 | /* sisusb->lock is down */ |
| 1353 | |
| 1354 | /* Save the user-provided font into a buffer. This |
| 1355 | * is used for restoring text mode after quitting |
| 1356 | * from X and for the con_getfont routine. |
| 1357 | */ |
| 1358 | if (sisusb->font_backup) { |
| 1359 | if (sisusb->font_backup_size < charcount) { |
| 1360 | vfree(sisusb->font_backup); |
| 1361 | sisusb->font_backup = NULL; |
| 1362 | } |
| 1363 | } |
| 1364 | |
| 1365 | if (!sisusb->font_backup) |
| 1366 | sisusb->font_backup = vmalloc(charcount * 32); |
| 1367 | |
| 1368 | if (sisusb->font_backup) { |
| 1369 | memcpy(sisusb->font_backup, font->data, charcount * 32); |
| 1370 | sisusb->font_backup_size = charcount; |
| 1371 | sisusb->font_backup_height = font->height; |
| 1372 | sisusb->font_backup_512 = (charcount == 512) ? 1 : 0; |
| 1373 | } |
| 1374 | |
| 1375 | /* do_font_op ups sisusb->lock */ |
| 1376 | |
| 1377 | return sisusbcon_do_font_op(sisusb, 1, 2, font->data, |
| 1378 | 8192, (charcount == 512), |
| 1379 | (!(flags & KD_FONT_FLAG_DONT_RECALC)) ? 1 : 0, |
| 1380 | c, font->height, 1); |
| 1381 | } |
| 1382 | |
| 1383 | /* Interface routine */ |
| 1384 | static int |
| 1385 | sisusbcon_font_get(struct vc_data *c, struct console_font *font) |
| 1386 | { |
| 1387 | struct sisusb_usb_data *sisusb; |
| 1388 | |
| 1389 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) |
| 1390 | return -ENODEV; |
| 1391 | |
| 1392 | /* sisusb->lock is down */ |
| 1393 | |
| 1394 | font->width = 8; |
| 1395 | font->height = c->vc_font.height; |
| 1396 | font->charcount = 256; |
| 1397 | |
| 1398 | if (!font->data) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1399 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1400 | return 0; |
| 1401 | } |
| 1402 | |
| 1403 | if (!sisusb->font_backup) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1404 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1405 | return -ENODEV; |
| 1406 | } |
| 1407 | |
| 1408 | /* Copy 256 chars only, like vgacon */ |
| 1409 | memcpy(font->data, sisusb->font_backup, 256 * 32); |
| 1410 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1411 | mutex_unlock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1412 | |
| 1413 | return 0; |
| 1414 | } |
| 1415 | |
| 1416 | /* |
| 1417 | * The console `switch' structure for the sisusb console |
| 1418 | */ |
| 1419 | |
| 1420 | static const struct consw sisusb_con = { |
| 1421 | .owner = THIS_MODULE, |
| 1422 | .con_startup = sisusbcon_startup, |
| 1423 | .con_init = sisusbcon_init, |
| 1424 | .con_deinit = sisusbcon_deinit, |
| 1425 | .con_clear = sisusbcon_clear, |
| 1426 | .con_putc = sisusbcon_putc, |
| 1427 | .con_putcs = sisusbcon_putcs, |
| 1428 | .con_cursor = sisusbcon_cursor, |
| 1429 | .con_scroll = sisusbcon_scroll, |
| 1430 | .con_bmove = sisusbcon_bmove, |
| 1431 | .con_switch = sisusbcon_switch, |
| 1432 | .con_blank = sisusbcon_blank, |
| 1433 | .con_font_set = sisusbcon_font_set, |
| 1434 | .con_font_get = sisusbcon_font_get, |
| 1435 | .con_set_palette = sisusbcon_set_palette, |
| 1436 | .con_scrolldelta = sisusbcon_scrolldelta, |
| 1437 | .con_build_attr = sisusbcon_build_attr, |
| 1438 | .con_invert_region = sisusbcon_invert_region, |
| 1439 | .con_set_origin = sisusbcon_set_origin, |
| 1440 | .con_save_screen = sisusbcon_save_screen, |
| 1441 | .con_resize = sisusbcon_resize, |
| 1442 | }; |
| 1443 | |
| 1444 | /* Our very own dummy console driver */ |
| 1445 | |
| 1446 | static const char *sisusbdummycon_startup(void) |
| 1447 | { |
| 1448 | return "SISUSBVGADUMMY"; |
| 1449 | } |
| 1450 | |
| 1451 | static void sisusbdummycon_init(struct vc_data *vc, int init) |
| 1452 | { |
| 1453 | vc->vc_can_do_color = 1; |
| 1454 | if (init) { |
| 1455 | vc->vc_cols = 80; |
| 1456 | vc->vc_rows = 25; |
| 1457 | } else |
| 1458 | vc_resize(vc, 80, 25); |
| 1459 | } |
| 1460 | |
| 1461 | static int sisusbdummycon_dummy(void) |
| 1462 | { |
| 1463 | return 0; |
| 1464 | } |
| 1465 | |
| 1466 | #define SISUSBCONDUMMY (void *)sisusbdummycon_dummy |
| 1467 | |
Adrian Bunk | df47e53 | 2006-04-15 11:17:27 +0200 | [diff] [blame] | 1468 | static const struct consw sisusb_dummy_con = { |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1469 | .owner = THIS_MODULE, |
| 1470 | .con_startup = sisusbdummycon_startup, |
| 1471 | .con_init = sisusbdummycon_init, |
| 1472 | .con_deinit = SISUSBCONDUMMY, |
| 1473 | .con_clear = SISUSBCONDUMMY, |
| 1474 | .con_putc = SISUSBCONDUMMY, |
| 1475 | .con_putcs = SISUSBCONDUMMY, |
| 1476 | .con_cursor = SISUSBCONDUMMY, |
| 1477 | .con_scroll = SISUSBCONDUMMY, |
| 1478 | .con_bmove = SISUSBCONDUMMY, |
| 1479 | .con_switch = SISUSBCONDUMMY, |
| 1480 | .con_blank = SISUSBCONDUMMY, |
| 1481 | .con_font_set = SISUSBCONDUMMY, |
| 1482 | .con_font_get = SISUSBCONDUMMY, |
| 1483 | .con_font_default = SISUSBCONDUMMY, |
| 1484 | .con_font_copy = SISUSBCONDUMMY, |
| 1485 | .con_set_palette = SISUSBCONDUMMY, |
| 1486 | .con_scrolldelta = SISUSBCONDUMMY, |
| 1487 | }; |
| 1488 | |
| 1489 | int |
| 1490 | sisusb_console_init(struct sisusb_usb_data *sisusb, int first, int last) |
| 1491 | { |
| 1492 | int i, ret, minor = sisusb->minor; |
| 1493 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1494 | mutex_lock(&disconnect_mutex); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1495 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1496 | mutex_lock(&sisusb->lock); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1497 | |
| 1498 | /* Erm.. that should not happen */ |
| 1499 | if (sisusb->haveconsole || !sisusb->SiS_Pr) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1500 | mutex_unlock(&sisusb->lock); |
| 1501 | mutex_unlock(&disconnect_mutex); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1502 | return 1; |
| 1503 | } |
| 1504 | |
| 1505 | sisusb->con_first = first; |
| 1506 | sisusb->con_last = last; |
| 1507 | |
| 1508 | if (first > last || |
| 1509 | first > MAX_NR_CONSOLES || |
| 1510 | last > MAX_NR_CONSOLES) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1511 | mutex_unlock(&sisusb->lock); |
| 1512 | mutex_unlock(&disconnect_mutex); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1513 | return 1; |
| 1514 | } |
| 1515 | |
| 1516 | /* If gfxcore not initialized or no consoles given, quit graciously */ |
| 1517 | if (!sisusb->gfxinit || first < 1 || last < 1) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1518 | mutex_unlock(&sisusb->lock); |
| 1519 | mutex_unlock(&disconnect_mutex); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1520 | return 0; |
| 1521 | } |
| 1522 | |
| 1523 | sisusb->sisusb_cursor_loc = -1; |
| 1524 | sisusb->sisusb_cursor_size_from = -1; |
| 1525 | sisusb->sisusb_cursor_size_to = -1; |
| 1526 | |
| 1527 | /* Set up text mode (and upload default font) */ |
| 1528 | if (sisusb_reset_text_mode(sisusb, 1)) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1529 | mutex_unlock(&sisusb->lock); |
| 1530 | mutex_unlock(&disconnect_mutex); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1531 | printk(KERN_ERR |
| 1532 | "sisusbvga[%d]: Failed to set up text mode\n", |
| 1533 | minor); |
| 1534 | return 1; |
| 1535 | } |
| 1536 | |
| 1537 | /* Initialize some gfx registers */ |
| 1538 | sisusb_initialize(sisusb); |
| 1539 | |
| 1540 | for (i = first - 1; i <= last - 1; i++) { |
| 1541 | /* Save sisusb for our interface routines */ |
| 1542 | mysisusbs[i] = sisusb; |
| 1543 | } |
| 1544 | |
| 1545 | /* Initial console setup */ |
| 1546 | sisusb->sisusb_num_columns = 80; |
| 1547 | |
| 1548 | /* Use a 32K buffer (matches b8000-bffff area) */ |
| 1549 | sisusb->scrbuf_size = 32 * 1024; |
| 1550 | |
| 1551 | /* Allocate screen buffer */ |
| 1552 | if (!(sisusb->scrbuf = (unsigned long)vmalloc(sisusb->scrbuf_size))) { |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1553 | mutex_unlock(&sisusb->lock); |
| 1554 | mutex_unlock(&disconnect_mutex); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1555 | printk(KERN_ERR |
| 1556 | "sisusbvga[%d]: Failed to allocate screen buffer\n", |
| 1557 | minor); |
| 1558 | return 1; |
| 1559 | } |
| 1560 | |
Arjan van de Ven | 2682d27 | 2006-03-28 01:00:21 -0800 | [diff] [blame] | 1561 | mutex_unlock(&sisusb->lock); |
| 1562 | mutex_unlock(&disconnect_mutex); |
Thomas Winischhofer | 1bbb4f2 | 2005-08-29 17:01:16 +0200 | [diff] [blame] | 1563 | |
| 1564 | /* Now grab the desired console(s) */ |
| 1565 | ret = take_over_console(&sisusb_con, first - 1, last - 1, 0); |
| 1566 | |
| 1567 | if (!ret) |
| 1568 | sisusb->haveconsole = 1; |
| 1569 | else { |
| 1570 | for (i = first - 1; i <= last - 1; i++) |
| 1571 | mysisusbs[i] = NULL; |
| 1572 | } |
| 1573 | |
| 1574 | return ret; |
| 1575 | } |
| 1576 | |
| 1577 | void |
| 1578 | sisusb_console_exit(struct sisusb_usb_data *sisusb) |
| 1579 | { |
| 1580 | int i; |
| 1581 | |
| 1582 | /* This is called if the device is disconnected |
| 1583 | * and while disconnect and lock semaphores |
| 1584 | * are up. This should be save because we |
| 1585 | * can't lose our sisusb any other way but by |
| 1586 | * disconnection (and hence, the disconnect |
| 1587 | * sema is for protecting all other access |
| 1588 | * functions from disconnection, not the |
| 1589 | * other way round). |
| 1590 | */ |
| 1591 | |
| 1592 | /* Now what do we do in case of disconnection: |
| 1593 | * One alternative would be to simply call |
| 1594 | * give_up_console(). Nah, not a good idea. |
| 1595 | * give_up_console() is obviously buggy as it |
| 1596 | * only discards the consw pointer from the |
| 1597 | * driver_map, but doesn't adapt vc->vc_sw |
| 1598 | * of the affected consoles. Hence, the next |
| 1599 | * call to any of the console functions will |
| 1600 | * eventually take a trip to oops county. |
| 1601 | * Also, give_up_console for some reason |
| 1602 | * doesn't decrement our module refcount. |
| 1603 | * Instead, we switch our consoles to a private |
| 1604 | * dummy console. This, of course, keeps our |
| 1605 | * refcount up as well, but it works perfectly. |
| 1606 | */ |
| 1607 | |
| 1608 | if (sisusb->haveconsole) { |
| 1609 | for (i = 0; i < MAX_NR_CONSOLES; i++) |
| 1610 | if (sisusb->havethisconsole[i]) |
| 1611 | take_over_console(&sisusb_dummy_con, i, i, 0); |
| 1612 | /* At this point, con_deinit for all our |
| 1613 | * consoles is executed by take_over_console(). |
| 1614 | */ |
| 1615 | sisusb->haveconsole = 0; |
| 1616 | } |
| 1617 | |
| 1618 | vfree((void *)sisusb->scrbuf); |
| 1619 | sisusb->scrbuf = 0; |
| 1620 | |
| 1621 | vfree(sisusb->font_backup); |
| 1622 | sisusb->font_backup = NULL; |
| 1623 | } |
| 1624 | |
| 1625 | void __init sisusb_init_concode(void) |
| 1626 | { |
| 1627 | int i; |
| 1628 | |
| 1629 | for (i = 0; i < MAX_NR_CONSOLES; i++) |
| 1630 | mysisusbs[i] = NULL; |
| 1631 | } |
| 1632 | |
| 1633 | #endif /* INCL_CON */ |
| 1634 | |
| 1635 | |
| 1636 | |