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 };
  57
  58 VT_DRIVER_DECLARE(vt_fb, vt_fb_driver);
  59
  60 static void
  61 vt_fb_mem_wr1(struct fb_info *sc, uint32_t o, uint8_t v)
  62 {
  63
  64         KASSERT((o < sc->fb_size), ("Offset %#08x out of fb size", o));
  65         *(uint8_t *)(sc->fb_vbase + o) = v;
  66 }
  67
  68 static void
  69 vt_fb_mem_wr2(struct fb_info *sc, uint32_t o, uint16_t v)
  70 {
  71
  72         KASSERT((o < sc->fb_size), ("Offset %#08x out of fb size", o));
  73         *(uint16_t *)(sc->fb_vbase + o) = v;
  74 }
  75
  76 static void
  77 vt_fb_mem_wr4(struct fb_info *sc, uint32_t o, uint32_t v)
  78 {
  79
  80         KASSERT((o < sc->fb_size), ("Offset %#08x out of fb size", o));
  81         *(uint32_t *)(sc->fb_vbase + o) = v;
  82 }
  83
  84 int
  85 vt_fb_ioctl(struct vt_device *vd, u_long cmd, caddr_t data, struct thread *td)
  86 {
  87         struct fb_info *info;
  88         int error = 0;
  89
  90         info = vd->vd_softc;
  91
  92         switch (cmd) {
  93         case FBIOGTYPE:
  94                 bcopy(info, (struct fbtype *)data, sizeof(struct fbtype));
  95                 break;
  96
  97         case FBIO_GETWINORG:    /* get frame buffer window origin */
  98                 *(u_int *)data = 0;
  99                 break;
 100
 101         case FBIO_GETDISPSTART: /* get display start address */
 102                 ((video_display_start_t *)data)->x = 0;
 103                 ((video_display_start_t *)data)->y = 0;
 104                 break;
 105
 106         case FBIO_GETLINEWIDTH: /* get scan line width in bytes */
 107                 *(u_int *)data = info->fb_stride;
 108                 break;
 109
 110         case FBIO_BLANK:        /* blank display */
 111                 if (vd->vd_driver->vd_blank == NULL)
 112                         return (ENODEV);
 113                 vd->vd_driver->vd_blank(vd, TC_BLACK);
 114                 break;
 115
 116         default:
 117                 error = ENOIOCTL;
 118                 break;
 119         }
 120
 121         return (error);
 122 }
 123
 124 int
 125 vt_fb_mmap(struct vt_device *vd, vm_ooffset_t offset, vm_paddr_t *paddr,
 126     int prot, vm_memattr_t *memattr)
 127 {
 128         struct fb_info *info;
 129
 130         info = vd->vd_softc;
 131
 132         if (info->fb_flags & FB_FLAG_NOMMAP)
 133                 return (ENODEV);
 134
 135         if (offset >= 0 && offset < info->fb_size) {
 136                 *paddr = info->fb_pbase + offset;
 137         #ifdef VM_MEMATTR_WRITE_COMBINING
 138                 *memattr = VM_MEMATTR_WRITE_COMBINING;
 139         #endif
 140                 return (0);
 141         }
 142
 143         return (EINVAL);
 144 }
 145
 146 void
 147 vt_fb_setpixel(struct vt_device *vd, int x, int y, term_color_t color)
 148 {
 149         struct fb_info *info;
 150         uint32_t c;
 151         u_int o;
 152
 153         info = vd->vd_softc;
 154         c = info->fb_cmap[color];
 155         o = info->fb_stride * y + x * FBTYPE_GET_BYTESPP(info);
 156
 157         if (info->fb_flags & FB_FLAG_NOWRITE)
 158                 return;
 159
 160         KASSERT((info->fb_vbase != 0), ("Unmapped framebuffer"));
 161
 162         switch (FBTYPE_GET_BYTESPP(info)) {
 163         case 1:
 164                 vt_fb_mem_wr1(info, o, c);
 165                 break;
 166         case 2:
 167                 vt_fb_mem_wr2(info, o, c);
 168                 break;
 169         case 3:
 170                 vt_fb_mem_wr1(info, o, (c >> 16) & 0xff);
 171                 vt_fb_mem_wr1(info, o + 1, (c >> 8) & 0xff);
 172                 vt_fb_mem_wr1(info, o + 2, c & 0xff);
 173                 break;
 174         case 4:
 175                 vt_fb_mem_wr4(info, o, c);
 176                 break;
 177         default:
 178                 /* panic? */
 179                 return;
 180         }
 181
 182 }
 183
 184 void
 185 vt_fb_drawrect(struct vt_device *vd, int x1, int y1, int x2, int y2, int fill,
 186     term_color_t color)
 187 {
 188         int x, y;
 189
 190         for (y = y1; y <= y2; y++) {
 191                 if (fill || (y == y1) || (y == y2)) {
 192                         for (x = x1; x <= x2; x++)
 193                                 vt_fb_setpixel(vd, x, y, color);
 194                 } else {
 195                         vt_fb_setpixel(vd, x1, y, color);
 196                         vt_fb_setpixel(vd, x2, y, color);
 197                 }
 198         }
 199 }
 200
 201 void
 202 vt_fb_blank(struct vt_device *vd, term_color_t color)
 203 {
 204         struct fb_info *info;
 205         uint32_t c;
 206         u_int o, h;
 207
 208         info = vd->vd_softc;
 209         c = info->fb_cmap[color];
 210
 211         if (info->fb_flags & FB_FLAG_NOWRITE)
 212                 return;
 213
 214         KASSERT((info->fb_vbase != 0), ("Unmapped framebuffer"));
 215
 216         switch (FBTYPE_GET_BYTESPP(info)) {
 217         case 1:
 218                 for (h = 0; h < info->fb_height; h++)
 219                         for (o = 0; o < info->fb_stride; o++)
 220                                 vt_fb_mem_wr1(info, h*info->fb_stride + o, c);
 221                 break;
 222         case 2:
 223                 for (h = 0; h < info->fb_height; h++)
 224                         for (o = 0; o < info->fb_stride; o += 2)
 225                                 vt_fb_mem_wr2(info, h*info->fb_stride + o, c);
 226                 break;
 227         case 3:
 228                 for (h = 0; h < info->fb_height; h++)
 229                         for (o = 0; o < info->fb_stride; o += 3) {
 230                                 vt_fb_mem_wr1(info, h*info->fb_stride + o,
 231                                     (c >> 16) & 0xff);
 232                                 vt_fb_mem_wr1(info, h*info->fb_stride + o + 1,
 233                                     (c >> 8) & 0xff);
 234                                 vt_fb_mem_wr1(info, h*info->fb_stride + o + 2,
 235                                     c & 0xff);
 236                         }
 237                 break;
 238         case 4:
 239                 for (h = 0; h < info->fb_height; h++)
 240                         for (o = 0; o < info->fb_stride; o += 4)
 241                                 vt_fb_mem_wr4(info, h*info->fb_stride + o, c);
 242                 break;
 243         default:
 244                 /* panic? */
 245                 return;
 246         }
 247 }
 248
 249 void
 250 vt_fb_bitblt_bitmap(struct vt_device *vd, const struct vt_window *vw,
 251     const uint8_t *pattern, const uint8_t *mask,
 252     unsigned int width, unsigned int height,
 253     unsigned int x, unsigned int y, term_color_t fg, term_color_t bg)
 254 {
 255         struct fb_info *info;
 256         uint32_t fgc, bgc, cc, o;
 257         int c, l, bpp, bpl;
 258         u_long line;
 259         uint8_t b, m;
 260         const uint8_t *ch;
 261
 262         info = vd->vd_softc;
 263         bpp = FBTYPE_GET_BYTESPP(info);
 264         fgc = info->fb_cmap[fg];
 265         bgc = info->fb_cmap[bg];
 266         b = m = 0;
 267         bpl = (width + 7) >> 3; /* Bytes per source line. */
 268
 269         if (info->fb_flags & FB_FLAG_NOWRITE)
 270                 return;
 271
 272         KASSERT((info->fb_vbase != 0), ("Unmapped framebuffer"));
 273
 274         line = (info->fb_stride * y) + (x * bpp);
 275         for (l = 0;
 276             l < height && y + l < vw->vw_draw_area.tr_end.tp_row;
 277             l++) {
 278                 ch = pattern;
 279                 for (c = 0;
 280                     c < width && x + c < vw->vw_draw_area.tr_end.tp_col;
 281                     c++) {
 282                         if (c % 8 == 0)
 283                                 b = *ch++;
 284                         else
 285                                 b <<= 1;
 286                         if (mask != NULL) {
 287                                 if (c % 8 == 0)
 288                                         m = *mask++;
 289                                 else
 290                                         m <<= 1;
 291                                 /* Skip pixel write, if mask has no bit set. */
 292                                 if ((m & 0x80) == 0)
 293                                         continue;
 294                         }
 295                         o = line + (c * bpp);
 296                         cc = b & 0x80 ? fgc : bgc;
 297
 298                         switch(bpp) {
 299                         case 1:
 300                                 vt_fb_mem_wr1(info, o, cc);
 301                                 break;
 302                         case 2:
 303                                 vt_fb_mem_wr2(info, o, cc);
 304                                 break;
 305                         case 3:
 306                                 /* Packed mode, so unaligned. Byte access. */
 307                                 vt_fb_mem_wr1(info, o, (cc >> 16) & 0xff);
 308                                 vt_fb_mem_wr1(info, o + 1, (cc >> 8) & 0xff);
 309                                 vt_fb_mem_wr1(info, o + 2, cc & 0xff);
 310                                 break;
 311                         case 4:
 312                                 vt_fb_mem_wr4(info, o, cc);
 313                                 break;
 314                         default:
 315                                 /* panic? */
 316                                 break;
 317                         }
 318                 }
 319                 line += info->fb_stride;
 320                 pattern += bpl;
 321         }
 322 }
 323
 324 void
 325 vt_fb_bitblt_text(struct vt_device *vd, const struct vt_window *vw,
 326     const term_rect_t *area)
 327 {
 328         unsigned int col, row, x, y;
 329         struct vt_font *vf;
 330         term_char_t c;
 331         term_color_t fg, bg;
 332         const uint8_t *pattern;
 333
 334         vf = vw->vw_font;
 335
 336         for (row = area->tr_begin.tp_row; row < area->tr_end.tp_row; ++row) {
 337                 for (col = area->tr_begin.tp_col; col < area->tr_end.tp_col;
 338                     ++col) {
 339                         x = col * vf->vf_width +
 340                             vw->vw_draw_area.tr_begin.tp_col;
 341                         y = row * vf->vf_height +
 342                             vw->vw_draw_area.tr_begin.tp_row;
 343
 344                         c = VTBUF_GET_FIELD(&vw->vw_buf, row, col);
 345                         pattern = vtfont_lookup(vf, c);
 346                         vt_determine_colors(c,
 347                             VTBUF_ISCURSOR(&vw->vw_buf, row, col), &fg, &bg);
 348
 349                         vt_fb_bitblt_bitmap(vd, vw,
 350                             pattern, NULL, vf->vf_width, vf->vf_height,
 351                             x, y, fg, bg);
 352                 }
 353         }
 354
 355 #ifndef SC_NO_CUTPASTE
 356         if (!vd->vd_mshown)
 357                 return;
 358
 359         term_rect_t drawn_area;
 360
 361         drawn_area.tr_begin.tp_col = area->tr_begin.tp_col * vf->vf_width;
 362         drawn_area.tr_begin.tp_row = area->tr_begin.tp_row * vf->vf_height;
 363         drawn_area.tr_end.tp_col = area->tr_end.tp_col * vf->vf_width;
 364         drawn_area.tr_end.tp_row = area->tr_end.tp_row * vf->vf_height;
 365
 366         if (vt_is_cursor_in_area(vd, &drawn_area)) {
 367                 vt_fb_bitblt_bitmap(vd, vw,
 368                     vd->vd_mcursor->map, vd->vd_mcursor->mask,
 369                     vd->vd_mcursor->width, vd->vd_mcursor->height,
 370                     vd->vd_mx_drawn + vw->vw_draw_area.tr_begin.tp_col,
 371                     vd->vd_my_drawn + vw->vw_draw_area.tr_begin.tp_row,
 372                     vd->vd_mcursor_fg, vd->vd_mcursor_bg);
 373         }
 374 #endif
 375 }
 376
 377 void
 378 vt_fb_postswitch(struct vt_device *vd)
 379 {
 380         struct fb_info *info;
 381
 382         info = vd->vd_softc;
 383
 384         if (info->enter != NULL)
 385                 info->enter(info->fb_priv);
 386 }
 387
 388 static int
 389 vt_fb_init_cmap(uint32_t *cmap, int depth)
 390 {
 391
 392         switch (depth) {
 393         case 8:
 394                 return (vt_generate_cons_palette(cmap, COLOR_FORMAT_RGB,
 395                     0x7, 5, 0x7, 2, 0x3, 0));
 396         case 15:
 397                 return (vt_generate_cons_palette(cmap, COLOR_FORMAT_RGB,
 398                     0x1f, 10, 0x1f, 5, 0x1f, 0));
 399         case 16:
 400                 return (vt_generate_cons_palette(cmap, COLOR_FORMAT_RGB,
 401                     0x1f, 11, 0x3f, 5, 0x1f, 0));
 402         case 24:
 403         case 32: /* Ignore alpha. */
 404                 return (vt_generate_cons_palette(cmap, COLOR_FORMAT_RGB,
 405                     0xff, 16, 0xff, 8, 0xff, 0));
 406         default:
 407                 return (1);
 408         }
 409 }
 410
 411 int
 412 vt_fb_init(struct vt_device *vd)
 413 {
 414         struct fb_info *info;
 415         int err;
 416
 417         info = vd->vd_softc;
 418         vd->vd_height = info->fb_height;
 419         vd->vd_width = info->fb_width;
 420
 421         if (info->fb_size == 0)
 422                 return (CN_DEAD);
 423
 424         if (info->fb_pbase == 0)
 425                 info->fb_flags |= FB_FLAG_NOMMAP;
 426
 427         if (info->fb_cmsize <= 0) {
 428                 err = vt_fb_init_cmap(info->fb_cmap, FBTYPE_GET_BPP(info));
 429                 if (err)
 430                         return (CN_DEAD);
 431                 info->fb_cmsize = 16;
 432         }
 433
 434         /* Clear the screen. */
 435         vd->vd_driver->vd_blank(vd, TC_BLACK);
 436
 437         /* Wakeup screen. KMS need this. */
 438         vt_fb_postswitch(vd);
 439
 440         return (CN_INTERNAL);
 441 }
 442
 443 int
 444 vt_fb_attach(struct fb_info *info)
 445 {
 446
 447         vt_allocate(&vt_fb_driver, info);
 448
 449         return (0);
 450 }
 451
 452 void
 453 vt_fb_resume(void)
 454 {
 455
 456         vt_resume();
 457 }
 458
 459 void
 460 vt_fb_suspend(void)
 461 {
 462
 463         vt_suspend();
 464 }