sys/dev/vt/hw/fb/vt_fb.c

   1 /*-
   2  * Copyright (c) 2013 The FreeBSD Foundation
   3  * All rights reserved.
   4  *
   5  * This software was developed by Aleksandr Rybalko under sponsorship from the
   6  * FreeBSD Foundation.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * $FreeBSD$
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __FBSDID("$FreeBSD$");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/malloc.h>
  38 #include <sys/queue.h>
  39 #include <sys/fbio.h>
  40 #include <dev/vt/vt.h>
  41 #include <dev/vt/hw/fb/vt_fb.h>
  42 #include <dev/vt/colors/vt_termcolors.h>
  43
  44 static struct vt_driver vt_fb_driver = {
  45         .vd_name = "fb",
  46         .vd_init = vt_fb_init,
  47         .vd_blank = vt_fb_blank,
  48         .vd_bitblt_text = vt_fb_bitblt_text,
  49         .vd_bitblt_bmp = vt_fb_bitblt_bitmap,
  50         .vd_drawrect = vt_fb_drawrect,
  51         .vd_setpixel = vt_fb_setpixel,
  52         .vd_postswitch = vt_fb_postswitch,
  53         .vd_priority = VD_PRIORITY_GENERIC+10,
  54         .vd_fb_ioctl = vt_fb_ioctl,
  55         .vd_fb_mmap = vt_fb_mmap,
  56         .vd_suspend = vt_fb_suspend,
  57         .vd_resume = vt_fb_resume,
  58 };
  59
  60 VT_DRIVER_DECLARE(vt_fb, vt_fb_driver);
  61
  62 static void
  63 vt_fb_mem_wr1(struct fb_info *sc, uint32_t o, uint8_t v)
  64 {
  65
  66         KASSERT((o < sc->fb_size), ("Offset %#08x out of fb size", o));
  67         *(uint8_t *)(sc->fb_vbase + o) = v;
  68 }
  69
  70 static void
  71 vt_fb_mem_wr2(struct fb_info *sc, uint32_t o, uint16_t v)
  72 {
  73
  74         KASSERT((o < sc->fb_size), ("Offset %#08x out of fb size", o));
  75         *(uint16_t *)(sc->fb_vbase + o) = v;
  76 }
  77
  78 static void
  79 vt_fb_mem_wr4(struct fb_info *sc, uint32_t o, uint32_t v)
  80 {
  81
  82         KASSERT((o < sc->fb_size), ("Offset %#08x out of fb size", o));
  83         *(uint32_t *)(sc->fb_vbase + o) = v;
  84 }
  85
  86 int
  87 vt_fb_ioctl(struct vt_device *vd, u_long cmd, caddr_t data, struct thread *td)
  88 {
  89         struct fb_info *info;
  90         int error = 0;
  91
  92         info = vd->vd_softc;
  93
  94         switch (cmd) {
  95         case FBIOGTYPE:
  96                 bcopy(info, (struct fbtype *)data, sizeof(struct fbtype));
  97                 break;
  98
  99         case FBIO_GETWINORG:    /* get frame buffer window origin */
 100                 *(u_int *)data = 0;
 101                 break;
 102
 103         case FBIO_GETDISPSTART: /* get display start address */
 104                 ((video_display_start_t *)data)->x = 0;
 105                 ((video_display_start_t *)data)->y = 0;
 106                 break;
 107
 108         case FBIO_GETLINEWIDTH: /* get scan line width in bytes */
 109                 *(u_int *)data = info->fb_stride;
 110                 break;
 111
 112         case FBIO_BLANK:        /* blank display */
 113                 if (vd->vd_driver->vd_blank == NULL)
 114                         return (ENODEV);
 115                 vd->vd_driver->vd_blank(vd, TC_BLACK);
 116                 break;
 117
 118         default:
 119                 error = ENOIOCTL;
 120                 break;
 121         }
 122
 123         return (error);
 124 }
 125
 126 int
 127 vt_fb_mmap(struct vt_device *vd, vm_ooffset_t offset, vm_paddr_t *paddr,
 128     int prot, vm_memattr_t *memattr)
 129 {
 130         struct fb_info *info;
 131
 132         info = vd->vd_softc;
 133
 134         if (info->fb_flags & FB_FLAG_NOMMAP)
 135                 return (ENODEV);
 136
 137         if (offset >= 0 && offset < info->fb_size) {
 138                 *paddr = info->fb_pbase + offset;
 139         #ifdef VM_MEMATTR_WRITE_COMBINING
 140                 *memattr = VM_MEMATTR_WRITE_COMBINING;
 141         #endif
 142                 return (0);
 143         }
 144
 145         return (EINVAL);
 146 }
 147
 148 void
 149 vt_fb_setpixel(struct vt_device *vd, int x, int y, term_color_t color)
 150 {
 151         struct fb_info *info;
 152         uint32_t c;
 153         u_int o;
 154
 155         info = vd->vd_softc;
 156         c = info->fb_cmap[color];
 157         o = info->fb_stride * y + x * FBTYPE_GET_BYTESPP(info);
 158
 159         if (info->fb_flags & FB_FLAG_NOWRITE)
 160                 return;
 161
 162         KASSERT((info->fb_vbase != 0), ("Unmapped framebuffer"));
 163
 164         switch (FBTYPE_GET_BYTESPP(info)) {
 165         case 1:
 166                 vt_fb_mem_wr1(info, o, c);
 167                 break;
 168         case 2:
 169                 vt_fb_mem_wr2(info, o, c);
 170                 break;
 171         case 3:
 172                 vt_fb_mem_wr1(info, o, (c >> 16) & 0xff);
 173                 vt_fb_mem_wr1(info, o + 1, (c >> 8) & 0xff);
 174                 vt_fb_mem_wr1(info, o + 2, c & 0xff);
 175                 break;
 176         case 4:
 177                 vt_fb_mem_wr4(info, o, c);
 178                 break;
 179         default:
 180                 /* panic? */
 181                 return;
 182         }
 183
 184 }
 185
 186 void
 187 vt_fb_drawrect(struct vt_device *vd, int x1, int y1, int x2, int y2, int fill,
 188     term_color_t color)
 189 {
 190         int x, y;
 191
 192         for (y = y1; y <= y2; y++) {
 193                 if (fill || (y == y1) || (y == y2)) {
 194                         for (x = x1; x <= x2; x++)
 195                                 vt_fb_setpixel(vd, x, y, color);
 196                 } else {
 197                         vt_fb_setpixel(vd, x1, y, color);
 198                         vt_fb_setpixel(vd, x2, y, color);
 199                 }
 200         }
 201 }
 202
 203 void
 204 vt_fb_blank(struct vt_device *vd, term_color_t color)
 205 {
 206         struct fb_info *info;
 207         uint32_t c;
 208         u_int o, h;
 209
 210         info = vd->vd_softc;
 211         c = info->fb_cmap[color];
 212
 213         if (info->fb_flags & FB_FLAG_NOWRITE)
 214                 return;
 215
 216         KASSERT((info->fb_vbase != 0), ("Unmapped framebuffer"));
 217
 218         switch (FBTYPE_GET_BYTESPP(info)) {
 219         case 1:
 220                 for (h = 0; h < info->fb_height; h++)
 221                         for (o = 0; o < info->fb_stride; o++)
 222                                 vt_fb_mem_wr1(info, h*info->fb_stride + o, c);
 223                 break;
 224         case 2:
 225                 for (h = 0; h < info->fb_height; h++)
 226                         for (o = 0; o < info->fb_stride; o += 2)
 227                                 vt_fb_mem_wr2(info, h*info->fb_stride + o, c);
 228                 break;
 229         case 3:
 230                 for (h = 0; h < info->fb_height; h++)
 231                         for (o = 0; o < info->fb_stride; o += 3) {
 232                                 vt_fb_mem_wr1(info, h*info->fb_stride + o,
 233                                     (c >> 16) & 0xff);
 234                                 vt_fb_mem_wr1(info, h*info->fb_stride + o + 1,
 235                                     (c >> 8) & 0xff);
 236                                 vt_fb_mem_wr1(info, h*info->fb_stride + o + 2,
 237                                     c & 0xff);
 238                         }
 239                 break;
 240         case 4:
 241                 for (h = 0; h < info->fb_height; h++)
 242                         for (o = 0; o < info->fb_stride; o += 4)
 243                                 vt_fb_mem_wr4(info, h*info->fb_stride + o, c);
 244                 break;
 245         default:
 246                 /* panic? */
 247                 return;
 248         }
 249 }
 250
 251 void
 252 vt_fb_bitblt_bitmap(struct vt_device *vd, const struct vt_window *vw,
 253     const uint8_t *pattern, const uint8_t *mask,
 254     unsigned int width, unsigned int height,
 255     unsigned int x, unsigned int y, term_color_t fg, term_color_t bg)
 256 {
 257         struct fb_info *info;
 258         uint32_t fgc, bgc, cc, o;
 259         int c, l, bpp, bpl;
 260         u_long line;
 261         uint8_t b, m;
 262         const uint8_t *ch;
 263
 264         info = vd->vd_softc;
 265         bpp = FBTYPE_GET_BYTESPP(info);
 266         fgc = info->fb_cmap[fg];
 267         bgc = info->fb_cmap[bg];
 268         b = m = 0;
 269         bpl = (width + 7) >> 3; /* Bytes per source line. */
 270
 271         if (info->fb_flags & FB_FLAG_NOWRITE)
 272                 return;
 273
 274         KASSERT((info->fb_vbase != 0), ("Unmapped framebuffer"));
 275
 276         line = (info->fb_stride * y) + (x * bpp);
 277         for (l = 0;
 278             l < height && y + l < vw->vw_draw_area.tr_end.tp_row;
 279             l++) {
 280                 ch = pattern;
 281                 for (c = 0;
 282                     c < width && x + c < vw->vw_draw_area.tr_end.tp_col;
 283                     c++) {
 284                         if (c % 8 == 0)
 285                                 b = *ch++;
 286                         else
 287                                 b <<= 1;
 288                         if (mask != NULL) {
 289                                 if (c % 8 == 0)
 290                                         m = *mask++;
 291                                 else
 292                                         m <<= 1;
 293                                 /* Skip pixel write, if mask has no bit set. */
 294                                 if ((m & 0x80) == 0)
 295                                         continue;
 296                         }
 297                         o = line + (c * bpp);
 298                         cc = b & 0x80 ? fgc : bgc;
 299
 300                         switch(bpp) {
 301                         case 1:
 302                                 vt_fb_mem_wr1(info, o, cc);
 303                                 break;
 304                         case 2:
 305                                 vt_fb_mem_wr2(info, o, cc);
 306                                 break;
 307                         case 3:
 308                                 /* Packed mode, so unaligned. Byte access. */
 309                                 vt_fb_mem_wr1(info, o, (cc >> 16) & 0xff);
 310                                 vt_fb_mem_wr1(info, o + 1, (cc >> 8) & 0xff);
 311                                 vt_fb_mem_wr1(info, o + 2, cc & 0xff);
 312                                 break;
 313                         case 4:
 314                                 vt_fb_mem_wr4(info, o, cc);
 315                                 break;
 316                         default:
 317                                 /* panic? */
 318                                 break;
 319                         }
 320                 }
 321                 line += info->fb_stride;
 322                 pattern += bpl;
 323         }
 324 }
 325
 326 void
 327 vt_fb_bitblt_text(struct vt_device *vd, const struct vt_window *vw,
 328     const term_rect_t *area)
 329 {
 330         unsigned int col, row, x, y;
 331         struct vt_font *vf;
 332         term_char_t c;
 333         term_color_t fg, bg;
 334         const uint8_t *pattern;
 335
 336         vf = vw->vw_font;
 337
 338         for (row = area->tr_begin.tp_row; row < area->tr_end.tp_row; ++row) {
 339                 for (col = area->tr_begin.tp_col; col < area->tr_end.tp_col;
 340                     ++col) {
 341                         x = col * vf->vf_width +
 342                             vw->vw_draw_area.tr_begin.tp_col;
 343                         y = row * vf->vf_height +
 344                             vw->vw_draw_area.tr_begin.tp_row;
 345
 346                         c = VTBUF_GET_FIELD(&vw->vw_buf, row, col);
 347                         pattern = vtfont_lookup(vf, c);
 348                         vt_determine_colors(c,
 349                             VTBUF_ISCURSOR(&vw->vw_buf, row, col), &fg, &bg);
 350
 351                         vt_fb_bitblt_bitmap(vd, vw,
 352                             pattern, NULL, vf->vf_width, vf->vf_height,
 353                             x, y, fg, bg);
 354                 }
 355         }
 356
 357 #ifndef SC_NO_CUTPASTE
 358         if (!vd->vd_mshown)
 359                 return;
 360
 361         term_rect_t drawn_area;
 362
 363         drawn_area.tr_begin.tp_col = area->tr_begin.tp_col * vf->vf_width;
 364         drawn_area.tr_begin.tp_row = area->tr_begin.tp_row * vf->vf_height;
 365         drawn_area.tr_end.tp_col = area->tr_end.tp_col * vf->vf_width;
 366         drawn_area.tr_end.tp_row = area->tr_end.tp_row * vf->vf_height;
 367
 368         if (vt_is_cursor_in_area(vd, &drawn_area)) {
 369                 vt_fb_bitblt_bitmap(vd, vw,
 370                     vd->vd_mcursor->map, vd->vd_mcursor->mask,
 371                     vd->vd_mcursor->width, vd->vd_mcursor->height,
 372                     vd->vd_mx_drawn + vw->vw_draw_area.tr_begin.tp_col,
 373                     vd->vd_my_drawn + vw->vw_draw_area.tr_begin.tp_row,
 374                     vd->vd_mcursor_fg, vd->vd_mcursor_bg);
 375         }
 376 #endif
 377 }
 378
 379 void
 380 vt_fb_postswitch(struct vt_device *vd)
 381 {
 382         struct fb_info *info;
 383
 384         info = vd->vd_softc;
 385
 386         if (info->enter != NULL)
 387                 info->enter(info->fb_priv);
 388 }
 389
 390 static int
 391 vt_fb_init_cmap(uint32_t *cmap, int depth)
 392 {
 393
 394         switch (depth) {
 395         case 8:
 396                 return (vt_generate_cons_palette(cmap, COLOR_FORMAT_RGB,
 397                     0x7, 5, 0x7, 2, 0x3, 0));
 398         case 15:
 399                 return (vt_generate_cons_palette(cmap, COLOR_FORMAT_RGB,
 400                     0x1f, 10, 0x1f, 5, 0x1f, 0));
 401         case 16:
 402                 return (vt_generate_cons_palette(cmap, COLOR_FORMAT_RGB,
 403                     0x1f, 11, 0x3f, 5, 0x1f, 0));
 404         case 24:
 405         case 32: /* Ignore alpha. */
 406                 return (vt_generate_cons_palette(cmap, COLOR_FORMAT_RGB,
 407                     0xff, 16, 0xff, 8, 0xff, 0));
 408         default:
 409                 return (1);
 410         }
 411 }
 412
 413 int
 414 vt_fb_init(struct vt_device *vd)
 415 {
 416         struct fb_info *info;
 417         int err;
 418
 419         info = vd->vd_softc;
 420         vd->vd_height = info->fb_height;
 421         vd->vd_width = info->fb_width;
 422
 423         if (info->fb_size == 0)
 424                 return (CN_DEAD);
 425
 426         if (info->fb_pbase == 0)
 427                 info->fb_flags |= FB_FLAG_NOMMAP;
 428
 429         if (info->fb_cmsize <= 0) {
 430                 err = vt_fb_init_cmap(info->fb_cmap, FBTYPE_GET_BPP(info));
 431                 if (err)
 432                         return (CN_DEAD);
 433                 info->fb_cmsize = 16;
 434         }
 435
 436         /* Clear the screen. */
 437         vd->vd_driver->vd_blank(vd, TC_BLACK);
 438
 439         /* Wakeup screen. KMS need this. */
 440         vt_fb_postswitch(vd);
 441
 442         return (CN_INTERNAL);
 443 }
 444
 445 int
 446 vt_fb_attach(struct fb_info *info)
 447 {
 448
 449         vt_allocate(&vt_fb_driver, info);
 450
 451         return (0);
 452 }
 453
 454 void
 455 vt_fb_suspend(struct vt_device *vd)
 456 {
 457
 458         vt_suspend(vd);
 459 }
 460
 461 void
 462 vt_fb_resume(struct vt_device *vd)
 463 {
 464
 465         vt_resume(vd);
 466 }