| 1 | /* $NetBSD: wsdisplay_vcons.c,v 1.35 2015/11/08 16:49:20 christos Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2005, 2006 Michael Lorenz |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 17 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 18 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 19 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 20 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 26 | * POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <sys/cdefs.h> |
| 30 | __KERNEL_RCSID(0, "$NetBSD: wsdisplay_vcons.c,v 1.35 2015/11/08 16:49:20 christos Exp $" ); |
| 31 | |
| 32 | #include <sys/param.h> |
| 33 | #include <sys/systm.h> |
| 34 | #include <sys/kernel.h> |
| 35 | #include <sys/buf.h> |
| 36 | #include <sys/device.h> |
| 37 | #include <sys/ioctl.h> |
| 38 | #include <sys/malloc.h> |
| 39 | #include <sys/mman.h> |
| 40 | #include <sys/tty.h> |
| 41 | #include <sys/conf.h> |
| 42 | #include <sys/proc.h> |
| 43 | #include <sys/kthread.h> |
| 44 | #include <sys/tprintf.h> |
| 45 | #include <sys/atomic.h> |
| 46 | |
| 47 | #include <dev/wscons/wsdisplayvar.h> |
| 48 | #include <dev/wscons/wsconsio.h> |
| 49 | #include <dev/wsfont/wsfont.h> |
| 50 | #include <dev/rasops/rasops.h> |
| 51 | |
| 52 | #include <dev/wscons/wsdisplay_vconsvar.h> |
| 53 | |
| 54 | #ifdef _KERNEL_OPT |
| 55 | #include "opt_wsemul.h" |
| 56 | #include "opt_wsdisplay_compat.h" |
| 57 | #include "opt_vcons.h" |
| 58 | #endif |
| 59 | |
| 60 | static void vcons_dummy_init_screen(void *, struct vcons_screen *, int, |
| 61 | long *); |
| 62 | |
| 63 | static int vcons_ioctl(void *, void *, u_long, void *, int, struct lwp *); |
| 64 | static int vcons_alloc_screen(void *, const struct wsscreen_descr *, void **, |
| 65 | int *, int *, long *); |
| 66 | static void vcons_free_screen(void *, void *); |
| 67 | static int vcons_show_screen(void *, void *, int, void (*)(void *, int, int), |
| 68 | void *); |
| 69 | |
| 70 | #ifdef WSDISPLAY_SCROLLSUPPORT |
| 71 | static void vcons_scroll(void *, void *, int); |
| 72 | static void vcons_do_scroll(struct vcons_screen *); |
| 73 | #endif |
| 74 | |
| 75 | static void vcons_do_switch(void *); |
| 76 | |
| 77 | /* methods that work only on text buffers */ |
| 78 | static void vcons_copycols_buffer(void *, int, int, int, int); |
| 79 | static void vcons_erasecols_buffer(void *, int, int, int, long); |
| 80 | static void vcons_copyrows_buffer(void *, int, int, int); |
| 81 | static void vcons_eraserows_buffer(void *, int, int, long); |
| 82 | static void vcons_putchar_buffer(void *, int, int, u_int, long); |
| 83 | |
| 84 | /* |
| 85 | * actual wrapper methods which call both the _buffer ones above and the |
| 86 | * driver supplied ones to do the drawing |
| 87 | */ |
| 88 | static void vcons_copycols(void *, int, int, int, int); |
| 89 | static void vcons_erasecols(void *, int, int, int, long); |
| 90 | static void vcons_copyrows(void *, int, int, int); |
| 91 | static void vcons_eraserows(void *, int, int, long); |
| 92 | static void vcons_putchar(void *, int, int, u_int, long); |
| 93 | #ifdef VCONS_DRAW_INTR |
| 94 | static void vcons_erasecols_cached(void *, int, int, int, long); |
| 95 | static void vcons_eraserows_cached(void *, int, int, long); |
| 96 | static void vcons_putchar_cached(void *, int, int, u_int, long); |
| 97 | #endif |
| 98 | static void vcons_cursor(void *, int, int, int); |
| 99 | |
| 100 | /* |
| 101 | * methods that avoid framebuffer reads |
| 102 | */ |
| 103 | static void vcons_copycols_noread(void *, int, int, int, int); |
| 104 | static void vcons_copyrows_noread(void *, int, int, int); |
| 105 | |
| 106 | |
| 107 | /* support for reading/writing text buffers. For wsmoused */ |
| 108 | static int vcons_putwschar(struct vcons_screen *, struct wsdisplay_char *); |
| 109 | static int vcons_getwschar(struct vcons_screen *, struct wsdisplay_char *); |
| 110 | |
| 111 | static void vcons_lock(struct vcons_screen *); |
| 112 | static void vcons_unlock(struct vcons_screen *); |
| 113 | |
| 114 | #ifdef VCONS_DRAW_INTR |
| 115 | static void vcons_intr(void *); |
| 116 | static void vcons_softintr(void *); |
| 117 | static void vcons_intr_enable(device_t); |
| 118 | #endif |
| 119 | |
| 120 | int |
| 121 | vcons_init(struct vcons_data *vd, void *cookie, struct wsscreen_descr *def, |
| 122 | struct wsdisplay_accessops *ao) |
| 123 | { |
| 124 | |
| 125 | /* zero out everything so we can rely on untouched fields being 0 */ |
| 126 | memset(vd, 0, sizeof(struct vcons_data)); |
| 127 | |
| 128 | vd->cookie = cookie; |
| 129 | |
| 130 | vd->init_screen = vcons_dummy_init_screen; |
| 131 | vd->show_screen_cb = NULL; |
| 132 | |
| 133 | /* keep a copy of the accessops that we replace below with our |
| 134 | * own wrappers */ |
| 135 | vd->ioctl = ao->ioctl; |
| 136 | |
| 137 | /* configure the accessops */ |
| 138 | ao->ioctl = vcons_ioctl; |
| 139 | ao->alloc_screen = vcons_alloc_screen; |
| 140 | ao->free_screen = vcons_free_screen; |
| 141 | ao->show_screen = vcons_show_screen; |
| 142 | #ifdef WSDISPLAY_SCROLLSUPPORT |
| 143 | ao->scroll = vcons_scroll; |
| 144 | #endif |
| 145 | |
| 146 | LIST_INIT(&vd->screens); |
| 147 | vd->active = NULL; |
| 148 | vd->wanted = NULL; |
| 149 | vd->currenttype = def; |
| 150 | callout_init(&vd->switch_callout, 0); |
| 151 | callout_setfunc(&vd->switch_callout, vcons_do_switch, vd); |
| 152 | #ifdef VCONS_DRAW_INTR |
| 153 | vd->cells = 0; |
| 154 | vd->attrs = NULL; |
| 155 | vd->chars = NULL; |
| 156 | vd->cursor_offset = -1; |
| 157 | #endif |
| 158 | |
| 159 | /* |
| 160 | * a lock to serialize access to the framebuffer. |
| 161 | * when switching screens we need to make sure there's no rasops |
| 162 | * operation in progress |
| 163 | */ |
| 164 | #ifdef DIAGNOSTIC |
| 165 | vd->switch_poll_count = 0; |
| 166 | #endif |
| 167 | #ifdef VCONS_DRAW_INTR |
| 168 | vd->intr_softint = softint_establish(SOFTINT_SERIAL, |
| 169 | vcons_softintr, vd); |
| 170 | callout_init(&vd->intr, 0); |
| 171 | callout_setfunc(&vd->intr, vcons_intr, vd); |
| 172 | vd->intr_valid = 1; |
| 173 | |
| 174 | /* XXX assume that the 'dev' arg is never dereferenced */ |
| 175 | config_interrupts((device_t)vd, vcons_intr_enable); |
| 176 | #endif |
| 177 | return 0; |
| 178 | } |
| 179 | |
| 180 | static void |
| 181 | vcons_lock(struct vcons_screen *scr) |
| 182 | { |
| 183 | #ifdef VCONS_PARANOIA |
| 184 | int s; |
| 185 | |
| 186 | s = splhigh(); |
| 187 | #endif |
| 188 | SCREEN_BUSY(scr); |
| 189 | #ifdef VCONS_PARANOIA |
| 190 | splx(s); |
| 191 | #endif |
| 192 | } |
| 193 | |
| 194 | static void |
| 195 | vcons_unlock(struct vcons_screen *scr) |
| 196 | { |
| 197 | #ifdef VCONS_PARANOIA |
| 198 | int s; |
| 199 | |
| 200 | s = splhigh(); |
| 201 | #endif |
| 202 | SCREEN_IDLE(scr); |
| 203 | #ifdef VCONS_PARANOIA |
| 204 | splx(s); |
| 205 | #endif |
| 206 | } |
| 207 | |
| 208 | static void |
| 209 | vcons_dummy_init_screen(void *cookie, |
| 210 | struct vcons_screen *scr, int exists, |
| 211 | long *defattr) |
| 212 | { |
| 213 | |
| 214 | /* |
| 215 | * default init_screen() method. |
| 216 | * Needs to be overwritten so we bitch and whine in case anyone ends |
| 217 | * up in here. |
| 218 | */ |
| 219 | printf("vcons_init_screen: dummy function called. Your driver is " |
| 220 | "supposed to supply a replacement for proper operation\n" ); |
| 221 | } |
| 222 | |
| 223 | int |
| 224 | vcons_init_screen(struct vcons_data *vd, struct vcons_screen *scr, |
| 225 | int existing, long *defattr) |
| 226 | { |
| 227 | struct rasops_info *ri = &scr->scr_ri; |
| 228 | int cnt, i; |
| 229 | #ifdef VCONS_DRAW_INTR |
| 230 | int size; |
| 231 | #endif |
| 232 | |
| 233 | scr->scr_cookie = vd->cookie; |
| 234 | scr->scr_vd = scr->scr_origvd = vd; |
| 235 | scr->scr_busy = 0; |
| 236 | |
| 237 | /* |
| 238 | * call the driver-supplied init_screen function which is expected |
| 239 | * to set up rasops_info, override cursor() and probably others |
| 240 | */ |
| 241 | vd->init_screen(vd->cookie, scr, existing, defattr); |
| 242 | |
| 243 | /* |
| 244 | * save the non virtual console aware rasops and replace them with |
| 245 | * our wrappers |
| 246 | */ |
| 247 | vd->eraserows = ri->ri_ops.eraserows; |
| 248 | vd->erasecols = ri->ri_ops.erasecols; |
| 249 | vd->putchar = ri->ri_ops.putchar; |
| 250 | vd->cursor = ri->ri_ops.cursor; |
| 251 | |
| 252 | if (scr->scr_flags & VCONS_NO_COPYCOLS) { |
| 253 | vd->copycols = vcons_copycols_noread; |
| 254 | } else { |
| 255 | vd->copycols = ri->ri_ops.copycols; |
| 256 | } |
| 257 | |
| 258 | if (scr->scr_flags & VCONS_NO_COPYROWS) { |
| 259 | vd->copyrows = vcons_copyrows_noread; |
| 260 | } else { |
| 261 | vd->copyrows = ri->ri_ops.copyrows; |
| 262 | } |
| 263 | |
| 264 | ri->ri_ops.eraserows = vcons_eraserows; |
| 265 | ri->ri_ops.erasecols = vcons_erasecols; |
| 266 | ri->ri_ops.putchar = vcons_putchar; |
| 267 | ri->ri_ops.cursor = vcons_cursor; |
| 268 | ri->ri_ops.copycols = vcons_copycols; |
| 269 | ri->ri_ops.copyrows = vcons_copyrows; |
| 270 | |
| 271 | |
| 272 | ri->ri_hw = scr; |
| 273 | |
| 274 | /* |
| 275 | * we allocate both chars and attributes in one chunk, attributes first |
| 276 | * because they have the (potentially) bigger alignment |
| 277 | */ |
| 278 | #ifdef WSDISPLAY_SCROLLSUPPORT |
| 279 | cnt = (ri->ri_rows + WSDISPLAY_SCROLLBACK_LINES) * ri->ri_cols; |
| 280 | scr->scr_lines_in_buffer = WSDISPLAY_SCROLLBACK_LINES; |
| 281 | scr->scr_current_line = 0; |
| 282 | scr->scr_line_wanted = 0; |
| 283 | scr->scr_offset_to_zero = ri->ri_cols * WSDISPLAY_SCROLLBACK_LINES; |
| 284 | scr->scr_current_offset = scr->scr_offset_to_zero; |
| 285 | #else |
| 286 | cnt = ri->ri_rows * ri->ri_cols; |
| 287 | #endif |
| 288 | scr->scr_attrs = malloc(cnt * (sizeof(long) + |
| 289 | sizeof(uint32_t)), M_DEVBUF, M_WAITOK); |
| 290 | if (scr->scr_attrs == NULL) |
| 291 | return ENOMEM; |
| 292 | |
| 293 | scr->scr_chars = (uint32_t *)&scr->scr_attrs[cnt]; |
| 294 | |
| 295 | i = ri->ri_ops.allocattr(ri, WS_DEFAULT_FG, WS_DEFAULT_BG, 0, defattr); |
| 296 | if (i != 0) { |
| 297 | #ifdef DIAGNOSTIC |
| 298 | printf("vcons: error allocating attribute %d\n" , i); |
| 299 | #endif |
| 300 | scr->scr_defattr = 0; |
| 301 | } else |
| 302 | scr->scr_defattr = *defattr; |
| 303 | |
| 304 | /* |
| 305 | * fill the attribute buffer with *defattr, chars with 0x20 |
| 306 | * since we don't know if the driver tries to mimic firmware output or |
| 307 | * reset everything we do nothing to VRAM here, any driver that feels |
| 308 | * the need to clear screen or something will have to do it on its own |
| 309 | * Additional screens will start out in the background anyway so |
| 310 | * cleaning or not only really affects the initial console screen |
| 311 | */ |
| 312 | for (i = 0; i < cnt; i++) { |
| 313 | scr->scr_attrs[i] = *defattr; |
| 314 | scr->scr_chars[i] = 0x20; |
| 315 | } |
| 316 | |
| 317 | #ifdef VCONS_DRAW_INTR |
| 318 | size = ri->ri_cols * ri->ri_rows; |
| 319 | if (size > vd->cells) { |
| 320 | if (vd->chars != NULL) free(vd->chars, M_DEVBUF); |
| 321 | if (vd->attrs != NULL) free(vd->attrs, M_DEVBUF); |
| 322 | vd->cells = size; |
| 323 | vd->chars = malloc(size * sizeof(uint32_t), M_DEVBUF, |
| 324 | M_WAITOK|M_ZERO); |
| 325 | vd->attrs = malloc(size * sizeof(long), M_DEVBUF, |
| 326 | M_WAITOK|M_ZERO); |
| 327 | vcons_invalidate_cache(vd); |
| 328 | } |
| 329 | #endif |
| 330 | |
| 331 | if(vd->active == NULL) { |
| 332 | vd->active = scr; |
| 333 | SCREEN_VISIBLE(scr); |
| 334 | } |
| 335 | |
| 336 | if (existing) { |
| 337 | SCREEN_VISIBLE(scr); |
| 338 | vd->active = scr; |
| 339 | } else { |
| 340 | SCREEN_INVISIBLE(scr); |
| 341 | } |
| 342 | |
| 343 | LIST_INSERT_HEAD(&vd->screens, scr, next); |
| 344 | return 0; |
| 345 | } |
| 346 | |
| 347 | static void |
| 348 | vcons_do_switch(void *arg) |
| 349 | { |
| 350 | struct vcons_data *vd = arg; |
| 351 | struct vcons_screen *scr, *oldscr; |
| 352 | |
| 353 | scr = vd->wanted; |
| 354 | if (!scr) { |
| 355 | printf("vcons_switch_screen: disappeared\n" ); |
| 356 | vd->switch_cb(vd->switch_cb_arg, EIO, 0); |
| 357 | return; |
| 358 | } |
| 359 | oldscr = vd->active; /* can be NULL! */ |
| 360 | |
| 361 | /* |
| 362 | * if there's an old, visible screen we mark it invisible and wait |
| 363 | * until it's not busy so we can safely switch |
| 364 | */ |
| 365 | if (oldscr != NULL) { |
| 366 | SCREEN_INVISIBLE(oldscr); |
| 367 | if (SCREEN_IS_BUSY(oldscr)) { |
| 368 | callout_schedule(&vd->switch_callout, 1); |
| 369 | #ifdef DIAGNOSTIC |
| 370 | /* bitch if we wait too long */ |
| 371 | vd->switch_poll_count++; |
| 372 | if (vd->switch_poll_count > 100) { |
| 373 | panic("vcons: screen still busy" ); |
| 374 | } |
| 375 | #endif |
| 376 | return; |
| 377 | } |
| 378 | /* invisible screen -> no visible cursor image */ |
| 379 | oldscr->scr_ri.ri_flg &= ~RI_CURSOR; |
| 380 | #ifdef DIAGNOSTIC |
| 381 | vd->switch_poll_count = 0; |
| 382 | #endif |
| 383 | } |
| 384 | |
| 385 | if (scr == oldscr) |
| 386 | return; |
| 387 | |
| 388 | #ifdef DIAGNOSTIC |
| 389 | if (SCREEN_IS_VISIBLE(scr)) |
| 390 | printf("vcons_switch_screen: already active" ); |
| 391 | #endif |
| 392 | |
| 393 | #ifdef notyet |
| 394 | if (vd->currenttype != type) { |
| 395 | vcons_set_screentype(vd, type); |
| 396 | vd->currenttype = type; |
| 397 | } |
| 398 | #endif |
| 399 | |
| 400 | SCREEN_VISIBLE(scr); |
| 401 | vd->active = scr; |
| 402 | vd->wanted = NULL; |
| 403 | |
| 404 | if (vd->show_screen_cb != NULL) |
| 405 | vd->show_screen_cb(scr); |
| 406 | |
| 407 | if ((scr->scr_flags & VCONS_NO_REDRAW) == 0) |
| 408 | vcons_redraw_screen(scr); |
| 409 | |
| 410 | if (vd->switch_cb) |
| 411 | vd->switch_cb(vd->switch_cb_arg, 0, 0); |
| 412 | } |
| 413 | |
| 414 | void |
| 415 | vcons_redraw_screen(struct vcons_screen *scr) |
| 416 | { |
| 417 | uint32_t *charptr = scr->scr_chars, c; |
| 418 | long *attrptr = scr->scr_attrs, a, last_a = 0, mask, cmp, acmp; |
| 419 | struct rasops_info *ri = &scr->scr_ri; |
| 420 | struct vcons_data *vd = scr->scr_vd; |
| 421 | int i, j, offset, boffset = 0, start = -1; |
| 422 | |
| 423 | mask = 0x00ff00ff; /* background and flags */ |
| 424 | cmp = -1; /* never match anything */ |
| 425 | vcons_lock(scr); |
| 426 | if (SCREEN_IS_VISIBLE(scr) && SCREEN_CAN_DRAW(scr)) { |
| 427 | |
| 428 | /* |
| 429 | * only clear the screen when RI_FULLCLEAR is set since we're |
| 430 | * going to overwrite every single character cell anyway |
| 431 | */ |
| 432 | if (ri->ri_flg & RI_FULLCLEAR) { |
| 433 | vd->eraserows(ri, 0, ri->ri_rows, |
| 434 | scr->scr_defattr); |
| 435 | cmp = scr->scr_defattr & mask; |
| 436 | } |
| 437 | |
| 438 | /* redraw the screen */ |
| 439 | #ifdef WSDISPLAY_SCROLLSUPPORT |
| 440 | offset = scr->scr_current_offset; |
| 441 | #else |
| 442 | offset = 0; |
| 443 | #endif |
| 444 | for (i = 0; i < ri->ri_rows; i++) { |
| 445 | start = -1; |
| 446 | for (j = 0; j < ri->ri_cols; j++) { |
| 447 | /* |
| 448 | * no need to use the wrapper function - we |
| 449 | * don't change any characters or attributes |
| 450 | * and we already made sure the screen we're |
| 451 | * working on is visible |
| 452 | */ |
| 453 | c = charptr[offset]; |
| 454 | a = attrptr[offset]; |
| 455 | acmp = a & mask; |
| 456 | if (c == ' ') { |
| 457 | /* |
| 458 | * if we already erased the background |
| 459 | * and this blank uses the same colour |
| 460 | * and flags we don't need to do |
| 461 | * anything here |
| 462 | */ |
| 463 | if (acmp == cmp) |
| 464 | goto next; |
| 465 | /* |
| 466 | * see if we can optimize things a |
| 467 | * little bit by drawing stretches of |
| 468 | * blanks using erasecols |
| 469 | */ |
| 470 | |
| 471 | if (start == -1) { |
| 472 | start = j; |
| 473 | last_a = acmp; |
| 474 | } else if (acmp != last_a) { |
| 475 | /* |
| 476 | * different attr, need to |
| 477 | * flush |
| 478 | */ |
| 479 | vd->erasecols(ri, i, start, |
| 480 | j - start, last_a); |
| 481 | start = -1; |
| 482 | } |
| 483 | } else { |
| 484 | if (start != -1) { |
| 485 | vd->erasecols(ri, i, start, |
| 486 | j - start, last_a); |
| 487 | start = -1; |
| 488 | } |
| 489 | |
| 490 | vd->putchar(ri, i, j, c, a); |
| 491 | } |
| 492 | next: |
| 493 | #ifdef VCONS_DRAW_INTR |
| 494 | vd->chars[boffset] = charptr[offset]; |
| 495 | vd->attrs[boffset] = attrptr[offset]; |
| 496 | #endif |
| 497 | offset++; |
| 498 | boffset++; |
| 499 | } |
| 500 | /* end of the line - draw all defered blanks, if any */ |
| 501 | if (start != -1) { |
| 502 | vd->erasecols(ri, i, start, j - start, last_a); |
| 503 | } |
| 504 | } |
| 505 | ri->ri_flg &= ~RI_CURSOR; |
| 506 | scr->scr_vd->cursor(ri, 1, ri->ri_crow, ri->ri_ccol); |
| 507 | #ifdef VCONS_DRAW_INTR |
| 508 | vd->cursor_offset = ri->ri_crow * ri->ri_cols + ri->ri_ccol; |
| 509 | #endif |
| 510 | } |
| 511 | vcons_unlock(scr); |
| 512 | } |
| 513 | |
| 514 | #ifdef VCONS_DRAW_INTR |
| 515 | void |
| 516 | vcons_update_screen(struct vcons_screen *scr) |
| 517 | { |
| 518 | uint32_t *charptr = scr->scr_chars; |
| 519 | long *attrptr = scr->scr_attrs; |
| 520 | struct rasops_info *ri = &scr->scr_ri; |
| 521 | struct vcons_data *vd = scr->scr_vd; |
| 522 | int i, j, offset, boffset = 0; |
| 523 | |
| 524 | vcons_lock(scr); |
| 525 | if (SCREEN_IS_VISIBLE(scr) && SCREEN_CAN_DRAW(scr)) { |
| 526 | |
| 527 | /* redraw the screen */ |
| 528 | #ifdef WSDISPLAY_SCROLLSUPPORT |
| 529 | offset = scr->scr_current_offset; |
| 530 | #else |
| 531 | offset = 0; |
| 532 | #endif |
| 533 | /* |
| 534 | * we mark the character cell occupied by the cursor as dirty |
| 535 | * so we don't have to deal with it |
| 536 | * notice that this isn't necessarily the position where rasops |
| 537 | * thinks it is, just where we drew it the last time |
| 538 | */ |
| 539 | if (vd->cursor_offset >= 0) |
| 540 | vd->attrs[vd->cursor_offset] = 0xffffffff; |
| 541 | |
| 542 | for (i = 0; i < ri->ri_rows; i++) { |
| 543 | for (j = 0; j < ri->ri_cols; j++) { |
| 544 | /* |
| 545 | * no need to use the wrapper function - we |
| 546 | * don't change any characters or attributes |
| 547 | * and we already made sure the screen we're |
| 548 | * working on is visible |
| 549 | */ |
| 550 | if ((vd->chars[boffset] != charptr[offset]) || |
| 551 | (vd->attrs[boffset] != attrptr[offset])) { |
| 552 | vd->putchar(ri, i, j, |
| 553 | charptr[offset], attrptr[offset]); |
| 554 | vd->chars[boffset] = charptr[offset]; |
| 555 | vd->attrs[boffset] = attrptr[offset]; |
| 556 | } |
| 557 | offset++; |
| 558 | boffset++; |
| 559 | } |
| 560 | } |
| 561 | ri->ri_flg &= ~RI_CURSOR; |
| 562 | scr->scr_vd->cursor(ri, 1, ri->ri_crow, ri->ri_ccol); |
| 563 | vd->cursor_offset = ri->ri_crow * ri->ri_cols + ri->ri_ccol; |
| 564 | } |
| 565 | vcons_unlock(scr); |
| 566 | } |
| 567 | #endif |
| 568 | |
| 569 | static int |
| 570 | vcons_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, |
| 571 | struct lwp *l) |
| 572 | { |
| 573 | struct vcons_data *vd = v; |
| 574 | int error = 0; |
| 575 | |
| 576 | |
| 577 | switch (cmd) { |
| 578 | case WSDISPLAYIO_GETWSCHAR: |
| 579 | error = vcons_getwschar((struct vcons_screen *)vs, |
| 580 | (struct wsdisplay_char *)data); |
| 581 | break; |
| 582 | |
| 583 | case WSDISPLAYIO_PUTWSCHAR: |
| 584 | error = vcons_putwschar((struct vcons_screen *)vs, |
| 585 | (struct wsdisplay_char *)data); |
| 586 | break; |
| 587 | |
| 588 | case WSDISPLAYIO_SET_POLLING: { |
| 589 | int poll = *(int *)data; |
| 590 | |
| 591 | /* first call the driver's ioctl handler */ |
| 592 | if (vd->ioctl != NULL) |
| 593 | error = (*vd->ioctl)(v, vs, cmd, data, flag, l); |
| 594 | if (poll) { |
| 595 | vcons_enable_polling(vd); |
| 596 | vcons_hard_switch(LIST_FIRST(&vd->screens)); |
| 597 | } else |
| 598 | vcons_disable_polling(vd); |
| 599 | } |
| 600 | break; |
| 601 | |
| 602 | default: |
| 603 | if (vd->ioctl != NULL) |
| 604 | error = (*vd->ioctl)(v, vs, cmd, data, flag, l); |
| 605 | else |
| 606 | error = EPASSTHROUGH; |
| 607 | } |
| 608 | |
| 609 | return error; |
| 610 | } |
| 611 | |
| 612 | static int |
| 613 | vcons_alloc_screen(void *v, const struct wsscreen_descr *type, void **cookiep, |
| 614 | int *curxp, int *curyp, long *defattrp) |
| 615 | { |
| 616 | struct vcons_data *vd = v; |
| 617 | struct vcons_screen *scr; |
| 618 | int ret; |
| 619 | |
| 620 | scr = malloc(sizeof(struct vcons_screen), M_DEVBUF, M_WAITOK | M_ZERO); |
| 621 | if (scr == NULL) |
| 622 | return ENOMEM; |
| 623 | |
| 624 | scr->scr_flags = 0; |
| 625 | scr->scr_status = 0; |
| 626 | scr->scr_busy = 0; |
| 627 | scr->scr_type = type; |
| 628 | |
| 629 | ret = vcons_init_screen(vd, scr, 0, defattrp); |
| 630 | if (ret != 0) { |
| 631 | free(scr, M_DEVBUF); |
| 632 | return ret; |
| 633 | } |
| 634 | |
| 635 | if (vd->active == NULL) { |
| 636 | SCREEN_VISIBLE(scr); |
| 637 | vd->active = scr; |
| 638 | vd->currenttype = type; |
| 639 | } |
| 640 | |
| 641 | *cookiep = scr; |
| 642 | *curxp = scr->scr_ri.ri_ccol; |
| 643 | *curyp = scr->scr_ri.ri_crow; |
| 644 | return 0; |
| 645 | } |
| 646 | |
| 647 | static void |
| 648 | vcons_free_screen(void *v, void *cookie) |
| 649 | { |
| 650 | struct vcons_data *vd = v; |
| 651 | struct vcons_screen *scr = cookie; |
| 652 | |
| 653 | vcons_lock(scr); |
| 654 | /* there should be no rasops activity here */ |
| 655 | |
| 656 | LIST_REMOVE(scr, next); |
| 657 | |
| 658 | if ((scr->scr_flags & VCONS_SCREEN_IS_STATIC) == 0) { |
| 659 | free(scr->scr_attrs, M_DEVBUF); |
| 660 | free(scr, M_DEVBUF); |
| 661 | } else { |
| 662 | /* |
| 663 | * maybe we should just restore the old rasops_info methods |
| 664 | * and free the character/attribute buffer here? |
| 665 | */ |
| 666 | #ifdef VCONS_DEBUG |
| 667 | panic("vcons_free_screen: console" ); |
| 668 | #else |
| 669 | printf("vcons_free_screen: console\n" ); |
| 670 | #endif |
| 671 | } |
| 672 | |
| 673 | if (vd->active == scr) |
| 674 | vd->active = NULL; |
| 675 | } |
| 676 | |
| 677 | static int |
| 678 | vcons_show_screen(void *v, void *cookie, int waitok, |
| 679 | void (*cb)(void *, int, int), void *cb_arg) |
| 680 | { |
| 681 | struct vcons_data *vd = v; |
| 682 | struct vcons_screen *scr; |
| 683 | |
| 684 | scr = cookie; |
| 685 | if (scr == vd->active) |
| 686 | return 0; |
| 687 | |
| 688 | vd->wanted = scr; |
| 689 | vd->switch_cb = cb; |
| 690 | vd->switch_cb_arg = cb_arg; |
| 691 | if (cb) { |
| 692 | callout_schedule(&vd->switch_callout, 0); |
| 693 | return EAGAIN; |
| 694 | } |
| 695 | |
| 696 | vcons_do_switch(vd); |
| 697 | return 0; |
| 698 | } |
| 699 | |
| 700 | /* wrappers for rasops_info methods */ |
| 701 | |
| 702 | static void |
| 703 | vcons_copycols_buffer(void *cookie, int row, int srccol, int dstcol, int ncols) |
| 704 | { |
| 705 | struct rasops_info *ri = cookie; |
| 706 | struct vcons_screen *scr = ri->ri_hw; |
| 707 | int from = srccol + row * ri->ri_cols; |
| 708 | int to = dstcol + row * ri->ri_cols; |
| 709 | |
| 710 | #ifdef WSDISPLAY_SCROLLSUPPORT |
| 711 | int offset; |
| 712 | offset = scr->scr_offset_to_zero; |
| 713 | |
| 714 | memmove(&scr->scr_attrs[offset + to], &scr->scr_attrs[offset + from], |
| 715 | ncols * sizeof(long)); |
| 716 | memmove(&scr->scr_chars[offset + to], &scr->scr_chars[offset + from], |
| 717 | ncols * sizeof(uint32_t)); |
| 718 | #else |
| 719 | memmove(&scr->scr_attrs[to], &scr->scr_attrs[from], |
| 720 | ncols * sizeof(long)); |
| 721 | memmove(&scr->scr_chars[to], &scr->scr_chars[from], |
| 722 | ncols * sizeof(uint32_t)); |
| 723 | #endif |
| 724 | |
| 725 | #ifdef VCONS_DRAW_INTR |
| 726 | atomic_inc_uint(&scr->scr_dirty); |
| 727 | #endif |
| 728 | } |
| 729 | |
| 730 | static void |
| 731 | vcons_copycols(void *cookie, int row, int srccol, int dstcol, int ncols) |
| 732 | { |
| 733 | struct rasops_info *ri = cookie; |
| 734 | struct vcons_screen *scr = ri->ri_hw; |
| 735 | |
| 736 | vcons_copycols_buffer(cookie, row, srccol, dstcol, ncols); |
| 737 | |
| 738 | #if defined(VCONS_DRAW_INTR) |
| 739 | if (scr->scr_vd->use_intr) |
| 740 | return; |
| 741 | #endif |
| 742 | |
| 743 | vcons_lock(scr); |
| 744 | if (SCREEN_IS_VISIBLE(scr) && SCREEN_CAN_DRAW(scr)) { |
| 745 | #if defined(VCONS_DRAW_INTR) |
| 746 | vcons_update_screen(scr); |
| 747 | #else |
| 748 | scr->scr_vd->copycols(cookie, row, srccol, dstcol, ncols); |
| 749 | #endif |
| 750 | } |
| 751 | vcons_unlock(scr); |
| 752 | } |
| 753 | |
| 754 | static void |
| 755 | vcons_copycols_noread(void *cookie, int row, int srccol, int dstcol, int ncols) |
| 756 | { |
| 757 | struct rasops_info *ri = cookie; |
| 758 | struct vcons_screen *scr = ri->ri_hw; |
| 759 | struct vcons_data *vd = scr->scr_vd; |
| 760 | |
| 761 | vcons_lock(scr); |
| 762 | if (SCREEN_IS_VISIBLE(scr) && SCREEN_CAN_DRAW(scr)) { |
| 763 | int pos, c, offset, ppos; |
| 764 | |
| 765 | #ifdef WSDISPLAY_SCROLLSUPPORT |
| 766 | offset = scr->scr_current_offset; |
| 767 | #else |
| 768 | offset = 0; |
| 769 | #endif |
| 770 | ppos = ri->ri_cols * row + dstcol; |
| 771 | pos = ppos + offset; |
| 772 | for (c = dstcol; c < (dstcol + ncols); c++) { |
| 773 | #ifdef VCONS_DRAW_INTR |
| 774 | if ((scr->scr_chars[pos] != vd->chars[ppos]) || |
| 775 | (scr->scr_attrs[pos] != vd->attrs[ppos])) { |
| 776 | vd->putchar(cookie, row, c, |
| 777 | scr->scr_chars[pos], scr->scr_attrs[pos]); |
| 778 | vd->chars[ppos] = scr->scr_chars[pos]; |
| 779 | vd->attrs[ppos] = scr->scr_attrs[pos]; |
| 780 | } |
| 781 | #else |
| 782 | vd->putchar(cookie, row, c, scr->scr_chars[pos], |
| 783 | scr->scr_attrs[pos]); |
| 784 | #endif |
| 785 | pos++; |
| 786 | ppos++; |
| 787 | } |
| 788 | } |
| 789 | vcons_unlock(scr); |
| 790 | } |
| 791 | |
| 792 | static void |
| 793 | vcons_erasecols_buffer(void *cookie, int row, int startcol, int ncols, long fillattr) |
| 794 | { |
| 795 | struct rasops_info *ri = cookie; |
| 796 | struct vcons_screen *scr = ri->ri_hw; |
| 797 | int start = startcol + row * ri->ri_cols; |
| 798 | int end = start + ncols, i; |
| 799 | |
| 800 | #ifdef WSDISPLAY_SCROLLSUPPORT |
| 801 | int offset; |
| 802 | offset = scr->scr_offset_to_zero; |
| 803 | |
| 804 | for (i = start; i < end; i++) { |
| 805 | scr->scr_attrs[offset + i] = fillattr; |
| 806 | scr->scr_chars[offset + i] = 0x20; |
| 807 | } |
| 808 | #else |
| 809 | for (i = start; i < end; i++) { |
| 810 | scr->scr_attrs[i] = fillattr; |
| 811 | scr->scr_chars[i] = 0x20; |
| 812 | } |
| 813 | #endif |
| 814 | |
| 815 | #ifdef VCONS_DRAW_INTR |
| 816 | atomic_inc_uint(&scr->scr_dirty); |
| 817 | #endif |
| 818 | } |
| 819 | |
| 820 | #ifdef VCONS_DRAW_INTR |
| 821 | static void |
| 822 | vcons_erasecols_cached(void *cookie, int row, int startcol, int ncols, long fillattr) |
| 823 | { |
| 824 | struct rasops_info *ri = cookie; |
| 825 | struct vcons_screen *scr = ri->ri_hw; |
| 826 | struct vcons_data *vd = scr->scr_vd; |
| 827 | int i, pos = row * ri->ri_cols + startcol; |
| 828 | |
| 829 | for (i = pos; i < ncols; i++) { |
| 830 | vd->chars[i] = 0x20; |
| 831 | vd->attrs[i] = fillattr; |
| 832 | } |
| 833 | vd->erasecols(cookie, row, startcol, ncols, fillattr); |
| 834 | } |
| 835 | #endif |
| 836 | |
| 837 | static void |
| 838 | vcons_erasecols(void *cookie, int row, int startcol, int ncols, long fillattr) |
| 839 | { |
| 840 | struct rasops_info *ri = cookie; |
| 841 | struct vcons_screen *scr = ri->ri_hw; |
| 842 | |
| 843 | vcons_erasecols_buffer(cookie, row, startcol, ncols, fillattr); |
| 844 | |
| 845 | #if defined(VCONS_DRAW_INTR) |
| 846 | if (scr->scr_vd->use_intr) |
| 847 | return; |
| 848 | #endif |
| 849 | |
| 850 | vcons_lock(scr); |
| 851 | if (SCREEN_IS_VISIBLE(scr) && SCREEN_CAN_DRAW(scr)) { |
| 852 | #ifdef VCONS_DRAW_INTR |
| 853 | vcons_erasecols_cached(cookie, row, startcol, ncols, |
| 854 | fillattr); |
| 855 | #else |
| 856 | scr->scr_vd->erasecols(cookie, row, startcol, ncols, fillattr); |
| 857 | #endif |
| 858 | } |
| 859 | vcons_unlock(scr); |
| 860 | } |
| 861 | |
| 862 | static void |
| 863 | vcons_copyrows_buffer(void *cookie, int srcrow, int dstrow, int nrows) |
| 864 | { |
| 865 | struct rasops_info *ri = cookie; |
| 866 | struct vcons_screen *scr = ri->ri_hw; |
| 867 | int from, to, len; |
| 868 | |
| 869 | #ifdef WSDISPLAY_SCROLLSUPPORT |
| 870 | int offset; |
| 871 | offset = scr->scr_offset_to_zero; |
| 872 | |
| 873 | /* do we need to scroll the back buffer? */ |
| 874 | if (dstrow == 0) { |
| 875 | from = ri->ri_cols * srcrow; |
| 876 | to = ri->ri_cols * dstrow; |
| 877 | |
| 878 | memmove(&scr->scr_attrs[to], &scr->scr_attrs[from], |
| 879 | scr->scr_offset_to_zero * sizeof(long)); |
| 880 | memmove(&scr->scr_chars[to], &scr->scr_chars[from], |
| 881 | scr->scr_offset_to_zero * sizeof(uint32_t)); |
| 882 | } |
| 883 | from = ri->ri_cols * srcrow + offset; |
| 884 | to = ri->ri_cols * dstrow + offset; |
| 885 | len = ri->ri_cols * nrows; |
| 886 | |
| 887 | #else |
| 888 | from = ri->ri_cols * srcrow; |
| 889 | to = ri->ri_cols * dstrow; |
| 890 | len = ri->ri_cols * nrows; |
| 891 | #endif |
| 892 | memmove(&scr->scr_attrs[to], &scr->scr_attrs[from], |
| 893 | len * sizeof(long)); |
| 894 | memmove(&scr->scr_chars[to], &scr->scr_chars[from], |
| 895 | len * sizeof(uint32_t)); |
| 896 | |
| 897 | #ifdef VCONS_DRAW_INTR |
| 898 | atomic_inc_uint(&scr->scr_dirty); |
| 899 | #endif |
| 900 | } |
| 901 | |
| 902 | static void |
| 903 | vcons_copyrows(void *cookie, int srcrow, int dstrow, int nrows) |
| 904 | { |
| 905 | struct rasops_info *ri = cookie; |
| 906 | struct vcons_screen *scr = ri->ri_hw; |
| 907 | |
| 908 | vcons_copyrows_buffer(cookie, srcrow, dstrow, nrows); |
| 909 | |
| 910 | #if defined(VCONS_DRAW_INTR) |
| 911 | if (scr->scr_vd->use_intr) |
| 912 | return; |
| 913 | #endif |
| 914 | |
| 915 | vcons_lock(scr); |
| 916 | if (SCREEN_IS_VISIBLE(scr) && SCREEN_CAN_DRAW(scr)) { |
| 917 | #if defined(VCONS_DRAW_INTR) |
| 918 | vcons_update_screen(scr); |
| 919 | #else |
| 920 | scr->scr_vd->copyrows(cookie, srcrow, dstrow, nrows); |
| 921 | #endif |
| 922 | } |
| 923 | vcons_unlock(scr); |
| 924 | } |
| 925 | |
| 926 | static void |
| 927 | vcons_copyrows_noread(void *cookie, int srcrow, int dstrow, int nrows) |
| 928 | { |
| 929 | struct rasops_info *ri = cookie; |
| 930 | struct vcons_screen *scr = ri->ri_hw; |
| 931 | struct vcons_data *vd = scr->scr_vd; |
| 932 | |
| 933 | vcons_lock(scr); |
| 934 | if (SCREEN_IS_VISIBLE(scr) && SCREEN_CAN_DRAW(scr)) { |
| 935 | int pos, l, c, offset, ppos; |
| 936 | |
| 937 | #ifdef WSDISPLAY_SCROLLSUPPORT |
| 938 | offset = scr->scr_current_offset; |
| 939 | #else |
| 940 | offset = 0; |
| 941 | #endif |
| 942 | ppos = ri->ri_cols * dstrow; |
| 943 | pos = ppos + offset; |
| 944 | for (l = dstrow; l < (dstrow + nrows); l++) { |
| 945 | for (c = 0; c < ri->ri_cols; c++) { |
| 946 | #ifdef VCONS_DRAW_INTR |
| 947 | if ((scr->scr_chars[pos] != vd->chars[ppos]) || |
| 948 | (scr->scr_attrs[pos] != vd->attrs[ppos])) { |
| 949 | vd->putchar(cookie, l, c, |
| 950 | scr->scr_chars[pos], scr->scr_attrs[pos]); |
| 951 | vd->chars[ppos] = scr->scr_chars[pos]; |
| 952 | vd->attrs[ppos] = scr->scr_attrs[pos]; |
| 953 | } |
| 954 | #else |
| 955 | vd->putchar(cookie, l, c, scr->scr_chars[pos], |
| 956 | scr->scr_attrs[pos]); |
| 957 | #endif |
| 958 | pos++; |
| 959 | ppos++; |
| 960 | } |
| 961 | } |
| 962 | } |
| 963 | vcons_unlock(scr); |
| 964 | } |
| 965 | |
| 966 | static void |
| 967 | vcons_eraserows_buffer(void *cookie, int row, int nrows, long fillattr) |
| 968 | { |
| 969 | struct rasops_info *ri = cookie; |
| 970 | struct vcons_screen *scr = ri->ri_hw; |
| 971 | int start, end, i; |
| 972 | |
| 973 | #ifdef WSDISPLAY_SCROLLSUPPORT |
| 974 | int offset; |
| 975 | offset = scr->scr_offset_to_zero; |
| 976 | |
| 977 | start = ri->ri_cols * row + offset; |
| 978 | end = ri->ri_cols * (row + nrows) + offset; |
| 979 | #else |
| 980 | start = ri->ri_cols * row; |
| 981 | end = ri->ri_cols * (row + nrows); |
| 982 | #endif |
| 983 | |
| 984 | for (i = start; i < end; i++) { |
| 985 | scr->scr_attrs[i] = fillattr; |
| 986 | scr->scr_chars[i] = 0x20; |
| 987 | } |
| 988 | |
| 989 | #ifdef VCONS_DRAW_INTR |
| 990 | atomic_inc_uint(&scr->scr_dirty); |
| 991 | #endif |
| 992 | } |
| 993 | |
| 994 | #ifdef VCONS_DRAW_INTR |
| 995 | static void |
| 996 | vcons_eraserows_cached(void *cookie, int row, int nrows, long fillattr) |
| 997 | { |
| 998 | struct rasops_info *ri = cookie; |
| 999 | struct vcons_screen *scr = ri->ri_hw; |
| 1000 | struct vcons_data *vd = scr->scr_vd; |
| 1001 | int i, pos = row * ri->ri_cols, end = (row+nrows) * ri->ri_cols; |
| 1002 | |
| 1003 | for (i = pos; i < end; i++) { |
| 1004 | vd->chars[i] = 0x20; |
| 1005 | vd->attrs[i] = fillattr; |
| 1006 | } |
| 1007 | vd->eraserows(cookie, row, nrows, fillattr); |
| 1008 | } |
| 1009 | #endif |
| 1010 | |
| 1011 | static void |
| 1012 | vcons_eraserows(void *cookie, int row, int nrows, long fillattr) |
| 1013 | { |
| 1014 | struct rasops_info *ri = cookie; |
| 1015 | struct vcons_screen *scr = ri->ri_hw; |
| 1016 | |
| 1017 | vcons_eraserows_buffer(cookie, row, nrows, fillattr); |
| 1018 | |
| 1019 | #if defined(VCONS_DRAW_INTR) |
| 1020 | if (scr->scr_vd->use_intr) |
| 1021 | return; |
| 1022 | #endif |
| 1023 | |
| 1024 | vcons_lock(scr); |
| 1025 | if (SCREEN_IS_VISIBLE(scr) && SCREEN_CAN_DRAW(scr)) { |
| 1026 | #ifdef VCONS_DRAW_INTR |
| 1027 | vcons_eraserows_cached(cookie, row, nrows, fillattr); |
| 1028 | #else |
| 1029 | scr->scr_vd->eraserows(cookie, row, nrows, fillattr); |
| 1030 | #endif |
| 1031 | } |
| 1032 | vcons_unlock(scr); |
| 1033 | } |
| 1034 | |
| 1035 | static void |
| 1036 | vcons_putchar_buffer(void *cookie, int row, int col, u_int c, long attr) |
| 1037 | { |
| 1038 | struct rasops_info *ri = cookie; |
| 1039 | struct vcons_screen *scr = ri->ri_hw; |
| 1040 | int pos; |
| 1041 | |
| 1042 | #ifdef WSDISPLAY_SCROLLSUPPORT |
| 1043 | int offset; |
| 1044 | offset = scr->scr_offset_to_zero; |
| 1045 | |
| 1046 | if ((row >= 0) && (row < ri->ri_rows) && (col >= 0) && |
| 1047 | (col < ri->ri_cols)) { |
| 1048 | pos = col + row * ri->ri_cols; |
| 1049 | scr->scr_attrs[pos + offset] = attr; |
| 1050 | scr->scr_chars[pos + offset] = c; |
| 1051 | } |
| 1052 | #else |
| 1053 | if ((row >= 0) && (row < ri->ri_rows) && (col >= 0) && |
| 1054 | (col < ri->ri_cols)) { |
| 1055 | pos = col + row * ri->ri_cols; |
| 1056 | scr->scr_attrs[pos] = attr; |
| 1057 | scr->scr_chars[pos] = c; |
| 1058 | } |
| 1059 | #endif |
| 1060 | |
| 1061 | #ifdef VCONS_DRAW_INTR |
| 1062 | atomic_inc_uint(&scr->scr_dirty); |
| 1063 | #endif |
| 1064 | } |
| 1065 | |
| 1066 | #ifdef VCONS_DRAW_INTR |
| 1067 | static void |
| 1068 | vcons_putchar_cached(void *cookie, int row, int col, u_int c, long attr) |
| 1069 | { |
| 1070 | struct rasops_info *ri = cookie; |
| 1071 | struct vcons_screen *scr = ri->ri_hw; |
| 1072 | struct vcons_data *vd = scr->scr_vd; |
| 1073 | int pos = row * ri->ri_cols + col; |
| 1074 | |
| 1075 | if ((vd->chars == NULL) || (vd->attrs == NULL)) { |
| 1076 | vd->putchar(cookie, row, col, c, attr); |
| 1077 | return; |
| 1078 | } |
| 1079 | if ((vd->chars[pos] != c) || (vd->attrs[pos] != attr)) { |
| 1080 | vd->attrs[pos] = attr; |
| 1081 | vd->chars[pos] = c; |
| 1082 | vd->putchar(cookie, row, col, c, attr); |
| 1083 | } |
| 1084 | } |
| 1085 | #endif |
| 1086 | |
| 1087 | static void |
| 1088 | vcons_putchar(void *cookie, int row, int col, u_int c, long attr) |
| 1089 | { |
| 1090 | struct rasops_info *ri = cookie; |
| 1091 | struct vcons_screen *scr = ri->ri_hw; |
| 1092 | |
| 1093 | vcons_putchar_buffer(cookie, row, col, c, attr); |
| 1094 | |
| 1095 | #if defined(VCONS_DRAW_INTR) |
| 1096 | if (scr->scr_vd->use_intr) |
| 1097 | return; |
| 1098 | #endif |
| 1099 | |
| 1100 | vcons_lock(scr); |
| 1101 | if (SCREEN_IS_VISIBLE(scr) && SCREEN_CAN_DRAW(scr)) { |
| 1102 | #ifdef VCONS_DRAW_INTR |
| 1103 | vcons_putchar_cached(cookie, row, col, c, attr); |
| 1104 | #else |
| 1105 | scr->scr_vd->putchar(cookie, row, col, c, attr); |
| 1106 | #endif |
| 1107 | } |
| 1108 | vcons_unlock(scr); |
| 1109 | } |
| 1110 | |
| 1111 | static void |
| 1112 | vcons_cursor(void *cookie, int on, int row, int col) |
| 1113 | { |
| 1114 | struct rasops_info *ri = cookie; |
| 1115 | struct vcons_screen *scr = ri->ri_hw; |
| 1116 | |
| 1117 | |
| 1118 | #if defined(VCONS_DRAW_INTR) |
| 1119 | if (scr->scr_vd->use_intr) { |
| 1120 | vcons_lock(scr); |
| 1121 | if (scr->scr_ri.ri_crow != row || scr->scr_ri.ri_ccol != col) { |
| 1122 | scr->scr_ri.ri_crow = row; |
| 1123 | scr->scr_ri.ri_ccol = col; |
| 1124 | atomic_inc_uint(&scr->scr_dirty); |
| 1125 | } |
| 1126 | vcons_unlock(scr); |
| 1127 | return; |
| 1128 | } |
| 1129 | #endif |
| 1130 | |
| 1131 | vcons_lock(scr); |
| 1132 | |
| 1133 | if (SCREEN_IS_VISIBLE(scr) && SCREEN_CAN_DRAW(scr)) { |
| 1134 | scr->scr_vd->cursor(cookie, on, row, col); |
| 1135 | } else { |
| 1136 | scr->scr_ri.ri_crow = row; |
| 1137 | scr->scr_ri.ri_ccol = col; |
| 1138 | } |
| 1139 | vcons_unlock(scr); |
| 1140 | } |
| 1141 | |
| 1142 | /* methods to read/write characters via ioctl() */ |
| 1143 | |
| 1144 | static int |
| 1145 | vcons_putwschar(struct vcons_screen *scr, struct wsdisplay_char *wsc) |
| 1146 | { |
| 1147 | long attr; |
| 1148 | struct rasops_info *ri; |
| 1149 | int error; |
| 1150 | |
| 1151 | KASSERT(scr != NULL && wsc != NULL); |
| 1152 | |
| 1153 | ri = &scr->scr_ri; |
| 1154 | |
| 1155 | if (__predict_false((unsigned int)wsc->col > ri->ri_cols || |
| 1156 | (unsigned int)wsc->row > ri->ri_rows)) |
| 1157 | return (EINVAL); |
| 1158 | |
| 1159 | if ((wsc->row >= 0) && (wsc->row < ri->ri_rows) && (wsc->col >= 0) && |
| 1160 | (wsc->col < ri->ri_cols)) { |
| 1161 | |
| 1162 | error = ri->ri_ops.allocattr(ri, wsc->foreground, |
| 1163 | wsc->background, wsc->flags, &attr); |
| 1164 | if (error) |
| 1165 | return error; |
| 1166 | vcons_putchar(ri, wsc->row, wsc->col, wsc->letter, attr); |
| 1167 | #ifdef VCONS_DEBUG |
| 1168 | printf("vcons_putwschar(%d, %d, %x, %lx\n" , wsc->row, wsc->col, |
| 1169 | wsc->letter, attr); |
| 1170 | #endif |
| 1171 | return 0; |
| 1172 | } else |
| 1173 | return EINVAL; |
| 1174 | } |
| 1175 | |
| 1176 | static int |
| 1177 | vcons_getwschar(struct vcons_screen *scr, struct wsdisplay_char *wsc) |
| 1178 | { |
| 1179 | int offset; |
| 1180 | long attr; |
| 1181 | struct rasops_info *ri; |
| 1182 | |
| 1183 | KASSERT(scr != NULL && wsc != NULL); |
| 1184 | |
| 1185 | ri = &scr->scr_ri; |
| 1186 | |
| 1187 | if ((wsc->row >= 0) && (wsc->row < ri->ri_rows) && (wsc->col >= 0) && |
| 1188 | (wsc->col < ri->ri_cols)) { |
| 1189 | |
| 1190 | offset = ri->ri_cols * wsc->row + wsc->col; |
| 1191 | #ifdef WSDISPLAY_SCROLLSUPPORT |
| 1192 | offset += scr->scr_offset_to_zero; |
| 1193 | #endif |
| 1194 | wsc->letter = scr->scr_chars[offset]; |
| 1195 | attr = scr->scr_attrs[offset]; |
| 1196 | |
| 1197 | /* |
| 1198 | * this is ugly. We need to break up an attribute into colours and |
| 1199 | * flags but there's no rasops method to do that so we must rely on |
| 1200 | * the 'canonical' encoding. |
| 1201 | */ |
| 1202 | #ifdef VCONS_DEBUG |
| 1203 | printf("vcons_getwschar: %d, %d, %x, %lx\n" , wsc->row, |
| 1204 | wsc->col, wsc->letter, attr); |
| 1205 | #endif |
| 1206 | wsc->foreground = (attr >> 24) & 0xff; |
| 1207 | wsc->background = (attr >> 16) & 0xff; |
| 1208 | wsc->flags = attr & 0xff; |
| 1209 | return 0; |
| 1210 | } else |
| 1211 | return EINVAL; |
| 1212 | } |
| 1213 | |
| 1214 | #ifdef WSDISPLAY_SCROLLSUPPORT |
| 1215 | |
| 1216 | static void |
| 1217 | vcons_scroll(void *cookie, void *vs, int where) |
| 1218 | { |
| 1219 | struct vcons_screen *scr = vs; |
| 1220 | |
| 1221 | if (where == 0) { |
| 1222 | scr->scr_line_wanted = 0; |
| 1223 | } else { |
| 1224 | scr->scr_line_wanted = scr->scr_line_wanted - where; |
| 1225 | if (scr->scr_line_wanted < 0) |
| 1226 | scr->scr_line_wanted = 0; |
| 1227 | if (scr->scr_line_wanted > scr->scr_lines_in_buffer) |
| 1228 | scr->scr_line_wanted = scr->scr_lines_in_buffer; |
| 1229 | } |
| 1230 | |
| 1231 | if (scr->scr_line_wanted != scr->scr_current_line) { |
| 1232 | |
| 1233 | vcons_do_scroll(scr); |
| 1234 | } |
| 1235 | } |
| 1236 | |
| 1237 | static void |
| 1238 | vcons_do_scroll(struct vcons_screen *scr) |
| 1239 | { |
| 1240 | int dist, from, to, num; |
| 1241 | int r_offset, r_start; |
| 1242 | int i, j; |
| 1243 | |
| 1244 | if (scr->scr_line_wanted == scr->scr_current_line) |
| 1245 | return; |
| 1246 | dist = scr->scr_line_wanted - scr->scr_current_line; |
| 1247 | scr->scr_current_line = scr->scr_line_wanted; |
| 1248 | scr->scr_current_offset = scr->scr_ri.ri_cols * |
| 1249 | (scr->scr_lines_in_buffer - scr->scr_current_line); |
| 1250 | if (abs(dist) >= scr->scr_ri.ri_rows) { |
| 1251 | vcons_redraw_screen(scr); |
| 1252 | return; |
| 1253 | } |
| 1254 | /* scroll and redraw only what we really have to */ |
| 1255 | if (dist > 0) { |
| 1256 | /* we scroll down */ |
| 1257 | from = 0; |
| 1258 | to = dist; |
| 1259 | num = scr->scr_ri.ri_rows - dist; |
| 1260 | /* now the redraw parameters */ |
| 1261 | r_offset = scr->scr_current_offset; |
| 1262 | r_start = 0; |
| 1263 | } else { |
| 1264 | /* scrolling up */ |
| 1265 | to = 0; |
| 1266 | from = -dist; |
| 1267 | num = scr->scr_ri.ri_rows + dist; |
| 1268 | r_offset = scr->scr_current_offset + num * scr->scr_ri.ri_cols; |
| 1269 | r_start = num; |
| 1270 | } |
| 1271 | scr->scr_vd->copyrows(scr, from, to, num); |
| 1272 | for (i = 0; i < abs(dist); i++) { |
| 1273 | for (j = 0; j < scr->scr_ri.ri_cols; j++) { |
| 1274 | #ifdef VCONS_DRAW_INTR |
| 1275 | vcons_putchar_cached(scr, i + r_start, j, |
| 1276 | scr->scr_chars[r_offset], |
| 1277 | scr->scr_attrs[r_offset]); |
| 1278 | #else |
| 1279 | scr->scr_vd->putchar(scr, i + r_start, j, |
| 1280 | scr->scr_chars[r_offset], |
| 1281 | scr->scr_attrs[r_offset]); |
| 1282 | #endif |
| 1283 | r_offset++; |
| 1284 | } |
| 1285 | } |
| 1286 | |
| 1287 | if (scr->scr_line_wanted == 0) { |
| 1288 | /* this was a reset - need to draw the cursor */ |
| 1289 | scr->scr_ri.ri_flg &= ~RI_CURSOR; |
| 1290 | scr->scr_vd->cursor(scr, 1, scr->scr_ri.ri_crow, |
| 1291 | scr->scr_ri.ri_ccol); |
| 1292 | } |
| 1293 | } |
| 1294 | |
| 1295 | #endif /* WSDISPLAY_SCROLLSUPPORT */ |
| 1296 | |
| 1297 | #ifdef VCONS_DRAW_INTR |
| 1298 | static void |
| 1299 | vcons_intr(void *cookie) |
| 1300 | { |
| 1301 | struct vcons_data *vd = cookie; |
| 1302 | |
| 1303 | softint_schedule(vd->intr_softint); |
| 1304 | } |
| 1305 | |
| 1306 | static void |
| 1307 | vcons_softintr(void *cookie) |
| 1308 | { |
| 1309 | struct vcons_data *vd = cookie; |
| 1310 | struct vcons_screen *scr = vd->active; |
| 1311 | unsigned int dirty; |
| 1312 | |
| 1313 | if (scr && vd->use_intr) { |
| 1314 | if (!SCREEN_IS_BUSY(scr)) { |
| 1315 | dirty = atomic_swap_uint(&scr->scr_dirty, 0); |
| 1316 | if (vd->use_intr == 2) { |
| 1317 | if ((scr->scr_flags & VCONS_NO_REDRAW) == 0) { |
| 1318 | vd->use_intr = 1; |
| 1319 | vcons_redraw_screen(scr); |
| 1320 | } |
| 1321 | } else if (dirty > 0) { |
| 1322 | if ((scr->scr_flags & VCONS_NO_REDRAW) == 0) |
| 1323 | vcons_update_screen(scr); |
| 1324 | } |
| 1325 | } |
| 1326 | } |
| 1327 | |
| 1328 | callout_schedule(&vd->intr, mstohz(33)); |
| 1329 | } |
| 1330 | |
| 1331 | static void |
| 1332 | vcons_intr_enable(device_t dev) |
| 1333 | { |
| 1334 | /* the 'dev' arg we pass to config_interrupts isn't a device_t */ |
| 1335 | struct vcons_data *vd = (struct vcons_data *)dev; |
| 1336 | vd->use_intr = 2; |
| 1337 | callout_schedule(&vd->intr, mstohz(33)); |
| 1338 | } |
| 1339 | #endif /* VCONS_DRAW_INTR */ |
| 1340 | |
| 1341 | void |
| 1342 | vcons_enable_polling(struct vcons_data *vd) |
| 1343 | { |
| 1344 | struct vcons_screen *scr = vd->active; |
| 1345 | |
| 1346 | #ifdef VCONS_DRAW_INTR |
| 1347 | vd->use_intr = 0; |
| 1348 | #endif |
| 1349 | |
| 1350 | if (scr && !SCREEN_IS_BUSY(scr)) { |
| 1351 | if ((scr->scr_flags & VCONS_NO_REDRAW) == 0) |
| 1352 | vcons_redraw_screen(scr); |
| 1353 | } |
| 1354 | } |
| 1355 | |
| 1356 | void |
| 1357 | vcons_disable_polling(struct vcons_data *vd) |
| 1358 | { |
| 1359 | #ifdef VCONS_DRAW_INTR |
| 1360 | struct vcons_screen *scr = vd->active; |
| 1361 | |
| 1362 | if (!vd->intr_valid) |
| 1363 | return; |
| 1364 | |
| 1365 | vd->use_intr = 2; |
| 1366 | if (scr) |
| 1367 | atomic_inc_uint(&scr->scr_dirty); |
| 1368 | #endif |
| 1369 | } |
| 1370 | |
| 1371 | void |
| 1372 | vcons_hard_switch(struct vcons_screen *scr) |
| 1373 | { |
| 1374 | struct vcons_data *vd = scr->scr_vd; |
| 1375 | struct vcons_screen *oldscr = vd->active; |
| 1376 | |
| 1377 | if (oldscr) { |
| 1378 | SCREEN_INVISIBLE(oldscr); |
| 1379 | oldscr->scr_ri.ri_flg &= ~RI_CURSOR; |
| 1380 | } |
| 1381 | SCREEN_VISIBLE(scr); |
| 1382 | vd->active = scr; |
| 1383 | vd->wanted = NULL; |
| 1384 | |
| 1385 | if (vd->show_screen_cb != NULL) |
| 1386 | vd->show_screen_cb(scr); |
| 1387 | } |
| 1388 | |
| 1389 | #ifdef VCONS_DRAW_INTR |
| 1390 | void |
| 1391 | vcons_invalidate_cache(struct vcons_data *vd) |
| 1392 | { |
| 1393 | int i; |
| 1394 | |
| 1395 | if (vd->cells == 0) |
| 1396 | return; |
| 1397 | |
| 1398 | for (i = 0; i > vd->cells; i++) { |
| 1399 | vd->chars[i] = -1; |
| 1400 | vd->attrs[i] = -1; |
| 1401 | } |
| 1402 | } |
| 1403 | #endif |
| 1404 | |