sys/powerpc/ofw/ofw_syscons.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause
   3  *
   4  * Copyright (c) 2003 Peter Grehan
   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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 #include <sys/param.h>
  31 #include <sys/systm.h>
  32 #include <sys/module.h>
  33 #include <sys/bus.h>
  34 #include <sys/kernel.h>
  35 #include <sys/sysctl.h>
  36 #include <sys/limits.h>
  37 #include <sys/conf.h>
  38 #include <sys/cons.h>
  39 #include <sys/proc.h>
  40 #include <sys/fcntl.h>
  41 #include <sys/malloc.h>
  42 #include <sys/fbio.h>
  43 #include <sys/consio.h>
  44
  45 #include <machine/bus.h>
  46 #include <machine/sc_machdep.h>
  47 #include <machine/vm.h>
  48
  49 #include <sys/rman.h>
  50
  51 #include <dev/fb/fbreg.h>
  52 #include <dev/syscons/syscons.h>
  53
  54 #include <dev/ofw/openfirm.h>
  55 #include <dev/ofw/ofw_bus.h>
  56 #include <dev/ofw/ofw_pci.h>
  57 #include <powerpc/ofw/ofw_syscons.h>
  58
  59 static int ofwfb_ignore_mmap_checks = 1;
  60 static int ofwfb_reset_on_switch = 1;
  61 static SYSCTL_NODE(_hw, OID_AUTO, ofwfb, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
  62     "ofwfb");
  63 SYSCTL_INT(_hw_ofwfb, OID_AUTO, relax_mmap, CTLFLAG_RW,
  64     &ofwfb_ignore_mmap_checks, 0, "relaxed mmap bounds checking");
  65 SYSCTL_INT(_hw_ofwfb, OID_AUTO, reset_on_mode_switch, CTLFLAG_RW,
  66     &ofwfb_reset_on_switch, 0, "reset the framebuffer driver on mode switch");
  67
  68 extern u_char dflt_font_16[];
  69 extern u_char dflt_font_14[];
  70 extern u_char dflt_font_8[];
  71
  72 static int ofwfb_configure(int flags);
  73
  74 static vi_probe_t ofwfb_probe;
  75 static vi_init_t ofwfb_init;
  76 static vi_get_info_t ofwfb_get_info;
  77 static vi_query_mode_t ofwfb_query_mode;
  78 static vi_set_mode_t ofwfb_set_mode;
  79 static vi_save_font_t ofwfb_save_font;
  80 static vi_load_font_t ofwfb_load_font;
  81 static vi_show_font_t ofwfb_show_font;
  82 static vi_save_palette_t ofwfb_save_palette;
  83 static vi_load_palette_t ofwfb_load_palette;
  84 static vi_set_border_t ofwfb_set_border;
  85 static vi_save_state_t ofwfb_save_state;
  86 static vi_load_state_t ofwfb_load_state;
  87 static vi_set_win_org_t ofwfb_set_win_org;
  88 static vi_read_hw_cursor_t ofwfb_read_hw_cursor;
  89 static vi_set_hw_cursor_t ofwfb_set_hw_cursor;
  90 static vi_set_hw_cursor_shape_t ofwfb_set_hw_cursor_shape;
  91 static vi_blank_display_t ofwfb_blank_display;
  92 static vi_mmap_t ofwfb_mmap;
  93 static vi_ioctl_t ofwfb_ioctl;
  94 static vi_clear_t ofwfb_clear;
  95 static vi_fill_rect_t ofwfb_fill_rect;
  96 static vi_bitblt_t ofwfb_bitblt;
  97 static vi_diag_t ofwfb_diag;
  98 static vi_save_cursor_palette_t ofwfb_save_cursor_palette;
  99 static vi_load_cursor_palette_t ofwfb_load_cursor_palette;
 100 static vi_copy_t ofwfb_copy;
 101 static vi_putp_t ofwfb_putp;
 102 static vi_putc_t ofwfb_putc;
 103 static vi_puts_t ofwfb_puts;
 104 static vi_putm_t ofwfb_putm;
 105
 106 static video_switch_t ofwfbvidsw = {
 107         .probe                  = ofwfb_probe,
 108         .init                   = ofwfb_init,
 109         .get_info               = ofwfb_get_info,
 110         .query_mode             = ofwfb_query_mode,
 111         .set_mode               = ofwfb_set_mode,
 112         .save_font              = ofwfb_save_font,
 113         .load_font              = ofwfb_load_font,
 114         .show_font              = ofwfb_show_font,
 115         .save_palette           = ofwfb_save_palette,
 116         .load_palette           = ofwfb_load_palette,
 117         .set_border             = ofwfb_set_border,
 118         .save_state             = ofwfb_save_state,
 119         .load_state             = ofwfb_load_state,
 120         .set_win_org            = ofwfb_set_win_org,
 121         .read_hw_cursor         = ofwfb_read_hw_cursor,
 122         .set_hw_cursor          = ofwfb_set_hw_cursor,
 123         .set_hw_cursor_shape    = ofwfb_set_hw_cursor_shape,
 124         .blank_display          = ofwfb_blank_display,
 125         .mmap                   = ofwfb_mmap,
 126         .ioctl                  = ofwfb_ioctl,
 127         .clear                  = ofwfb_clear,
 128         .fill_rect              = ofwfb_fill_rect,
 129         .bitblt                 = ofwfb_bitblt,
 130         .diag                   = ofwfb_diag,
 131         .save_cursor_palette    = ofwfb_save_cursor_palette,
 132         .load_cursor_palette    = ofwfb_load_cursor_palette,
 133         .copy                   = ofwfb_copy,
 134         .putp                   = ofwfb_putp,
 135         .putc                   = ofwfb_putc,
 136         .puts                   = ofwfb_puts,
 137         .putm                   = ofwfb_putm,
 138 };
 139
 140 /*
 141  * bitmap depth-specific routines
 142  */
 143 static vi_blank_display_t ofwfb_blank_display8;
 144 static vi_putc_t ofwfb_putc8;
 145 static vi_putm_t ofwfb_putm8;
 146 static vi_set_border_t ofwfb_set_border8;
 147
 148 static vi_blank_display_t ofwfb_blank_display32;
 149 static vi_putc_t ofwfb_putc32;
 150 static vi_putm_t ofwfb_putm32;
 151 static vi_set_border_t ofwfb_set_border32;
 152
 153 VIDEO_DRIVER(ofwfb, ofwfbvidsw, ofwfb_configure);
 154
 155 extern sc_rndr_sw_t txtrndrsw;
 156 RENDERER(ofwfb, 0, txtrndrsw, gfb_set);
 157
 158 RENDERER_MODULE(ofwfb, gfb_set);
 159
 160 /*
 161  * Define the iso6429-1983 colormap
 162  */
 163 static struct {
 164         uint8_t red;
 165         uint8_t green;
 166         uint8_t blue;
 167 } ofwfb_cmap[16] = {            /*  #     R    G    B   Color */
 168                                 /*  -     -    -    -   ----- */
 169         { 0x00, 0x00, 0x00 },   /*  0     0    0    0   Black */
 170         { 0x00, 0x00, 0xaa },   /*  1     0    0  2/3   Blue  */
 171         { 0x00, 0xaa, 0x00 },   /*  2     0  2/3    0   Green */
 172         { 0x00, 0xaa, 0xaa },   /*  3     0  2/3  2/3   Cyan  */
 173         { 0xaa, 0x00, 0x00 },   /*  4   2/3    0    0   Red   */
 174         { 0xaa, 0x00, 0xaa },   /*  5   2/3    0  2/3   Magenta */
 175         { 0xaa, 0x55, 0x00 },   /*  6   2/3  1/3    0   Brown */
 176         { 0xaa, 0xaa, 0xaa },   /*  7   2/3  2/3  2/3   White */
 177         { 0x55, 0x55, 0x55 },   /*  8   1/3  1/3  1/3   Gray  */
 178         { 0x55, 0x55, 0xff },   /*  9   1/3  1/3    1   Bright Blue  */
 179         { 0x55, 0xff, 0x55 },   /* 10   1/3    1  1/3   Bright Green */
 180         { 0x55, 0xff, 0xff },   /* 11   1/3    1    1   Bright Cyan  */
 181         { 0xff, 0x55, 0x55 },   /* 12     1  1/3  1/3   Bright Red   */
 182         { 0xff, 0x55, 0xff },   /* 13     1  1/3    1   Bright Magenta */
 183         { 0xff, 0xff, 0x80 },   /* 14     1    1  1/3   Bright Yellow */
 184         { 0xff, 0xff, 0xff }    /* 15     1    1    1   Bright White */
 185 };
 186
 187 #define TODO    printf("%s: unimplemented\n", __func__)
 188
 189 static u_int16_t ofwfb_static_window[ROW*COL];
 190
 191 static struct ofwfb_softc ofwfb_softc;
 192
 193 static __inline int
 194 ofwfb_background(uint8_t attr)
 195 {
 196         return (attr >> 4);
 197 }
 198
 199 static __inline int
 200 ofwfb_foreground(uint8_t attr)
 201 {
 202         return (attr & 0x0f);
 203 }
 204
 205 static u_int
 206 ofwfb_pix32(struct ofwfb_softc *sc, int attr)
 207 {
 208         u_int retval;
 209
 210         if (sc->sc_tag == &bs_le_tag)
 211                 retval = (ofwfb_cmap[attr].red << 16) |
 212                         (ofwfb_cmap[attr].green << 8) |
 213                         ofwfb_cmap[attr].blue;
 214         else
 215                 retval = (ofwfb_cmap[attr].blue  << 16) |
 216                         (ofwfb_cmap[attr].green << 8) |
 217                         ofwfb_cmap[attr].red;
 218
 219         return (retval);
 220 }
 221
 222 static int
 223 ofwfb_configure(int flags)
 224 {
 225         struct ofwfb_softc *sc;
 226         phandle_t chosen;
 227         ihandle_t stdout;
 228         phandle_t node;
 229         uint32_t fb_phys;
 230         int depth;
 231         int disable;
 232         int len;
 233         int i;
 234         char type[16];
 235         static int done = 0;
 236
 237         disable = 0;
 238         TUNABLE_INT_FETCH("hw.syscons.disable", &disable);
 239         if (disable != 0)
 240                 return (0);
 241
 242         if (done != 0)
 243                 return (0);
 244         done = 1;
 245
 246         sc = &ofwfb_softc;
 247
 248         chosen = OF_finddevice("/chosen");
 249         OF_getprop(chosen, "stdout", &stdout, sizeof(stdout));
 250         node = OF_instance_to_package(stdout);
 251         if (node == -1) {
 252                 /*
 253                  * The "/chosen/stdout" does not exist try
 254                  * using "screen" directly.
 255                  */
 256                 node = OF_finddevice("screen");
 257         }
 258         OF_getprop(node, "device_type", type, sizeof(type));
 259         if (strcmp(type, "display") != 0)
 260                 return (0);
 261
 262         /* Only support 8 and 32-bit framebuffers */
 263         OF_getprop(node, "depth", &depth, sizeof(depth));
 264         if (depth == 8) {
 265                 sc->sc_blank = ofwfb_blank_display8;
 266                 sc->sc_putc = ofwfb_putc8;
 267                 sc->sc_putm = ofwfb_putm8;
 268                 sc->sc_set_border = ofwfb_set_border8;
 269         } else if (depth == 32) {
 270                 sc->sc_blank = ofwfb_blank_display32;
 271                 sc->sc_putc = ofwfb_putc32;
 272                 sc->sc_putm = ofwfb_putm32;
 273                 sc->sc_set_border = ofwfb_set_border32;
 274         } else
 275                 return (0);
 276
 277         if (OF_getproplen(node, "height") != sizeof(sc->sc_height) ||
 278             OF_getproplen(node, "width") != sizeof(sc->sc_width) ||
 279             OF_getproplen(node, "linebytes") != sizeof(sc->sc_stride))
 280                 return (0);
 281
 282         sc->sc_depth = depth;
 283         sc->sc_node = node;
 284         sc->sc_console = 1;
 285         OF_getprop(node, "height", &sc->sc_height, sizeof(sc->sc_height));
 286         OF_getprop(node, "width", &sc->sc_width, sizeof(sc->sc_width));
 287         OF_getprop(node, "linebytes", &sc->sc_stride, sizeof(sc->sc_stride));
 288
 289         /*
 290          * Get the PCI addresses of the adapter. The node may be the
 291          * child of the PCI device: in that case, try the parent for
 292          * the assigned-addresses property.
 293          */
 294         len = OF_getprop(node, "assigned-addresses", sc->sc_pciaddrs,
 295                   sizeof(sc->sc_pciaddrs));
 296         if (len == -1) {
 297                 len = OF_getprop(OF_parent(node), "assigned-addresses",
 298                     sc->sc_pciaddrs, sizeof(sc->sc_pciaddrs));
 299         }
 300         if (len == -1)
 301                 len = 0;
 302         sc->sc_num_pciaddrs = len / sizeof(struct ofw_pci_register);
 303
 304         /*
 305          * Grab the physical address of the framebuffer, and then map it
 306          * into our memory space. If the MMU is not yet up, it will be
 307          * remapped for us when relocation turns on.
 308          *
 309          * XXX We assume #address-cells is 1 at this point.
 310          */
 311         if (OF_getproplen(node, "address") == sizeof(fb_phys)) {
 312                 OF_getprop(node, "address", &fb_phys, sizeof(fb_phys));
 313                 sc->sc_tag = &bs_be_tag;
 314                 bus_space_map(sc->sc_tag, fb_phys, sc->sc_height *
 315                     sc->sc_stride, BUS_SPACE_MAP_PREFETCHABLE, &sc->sc_addr);
 316         } else {
 317                 /*
 318                  * Some IBM systems don't have an address property. Try to
 319                  * guess the framebuffer region from the assigned addresses.
 320                  * This is ugly, but there doesn't seem to be an alternative.
 321                  * Linux does the same thing.
 322                  */
 323
 324                 fb_phys = sc->sc_num_pciaddrs;
 325                 for (i = 0; i < sc->sc_num_pciaddrs; i++) {
 326                         /* If it is too small, not the framebuffer */
 327                         if (sc->sc_pciaddrs[i].size_lo <
 328                             sc->sc_stride*sc->sc_height)
 329                                 continue;
 330                         /* If it is not memory, it isn't either */
 331                         if (!(sc->sc_pciaddrs[i].phys_hi &
 332                             OFW_PCI_PHYS_HI_SPACE_MEM32))
 333                                 continue;
 334
 335                         /* This could be the framebuffer */
 336                         fb_phys = i;
 337
 338                         /* If it is prefetchable, it certainly is */
 339                         if (sc->sc_pciaddrs[i].phys_hi &
 340                             OFW_PCI_PHYS_HI_PREFETCHABLE)
 341                                 break;
 342                 }
 343                 if (fb_phys == sc->sc_num_pciaddrs)
 344                         return (0);
 345
 346                 OF_decode_addr(node, fb_phys, &sc->sc_tag, &sc->sc_addr, NULL);
 347         }
 348
 349         ofwfb_init(0, &sc->sc_va, 0);
 350
 351         return (0);
 352 }
 353
 354 static int
 355 ofwfb_probe(int unit, video_adapter_t **adp, void *arg, int flags)
 356 {
 357         TODO;
 358         return (0);
 359 }
 360
 361 static int
 362 ofwfb_init(int unit, video_adapter_t *adp, int flags)
 363 {
 364         struct ofwfb_softc *sc;
 365         video_info_t *vi;
 366         int cborder;
 367         int font_height;
 368
 369         sc = (struct ofwfb_softc *)adp;
 370         vi = &adp->va_info;
 371
 372         vid_init_struct(adp, "ofwfb", -1, unit);
 373
 374         /* The default font size can be overridden by loader */
 375         font_height = 16;
 376         TUNABLE_INT_FETCH("hw.syscons.fsize", &font_height);
 377         if (font_height == 8) {
 378                 sc->sc_font = dflt_font_8;
 379                 sc->sc_font_height = 8;
 380         } else if (font_height == 14) {
 381                 sc->sc_font = dflt_font_14;
 382                 sc->sc_font_height = 14;
 383         } else {
 384                 /* default is 8x16 */
 385                 sc->sc_font = dflt_font_16;
 386                 sc->sc_font_height = 16;
 387         }
 388
 389         /* The user can set a border in chars - default is 1 char width */
 390         cborder = 1;
 391         TUNABLE_INT_FETCH("hw.syscons.border", &cborder);
 392
 393         vi->vi_cheight = sc->sc_font_height;
 394         vi->vi_width = sc->sc_width/8 - 2*cborder;
 395         vi->vi_height = sc->sc_height/sc->sc_font_height - 2*cborder;
 396         vi->vi_cwidth = 8;
 397
 398         /*
 399          * Clamp width/height to syscons maximums
 400          */
 401         if (vi->vi_width > COL)
 402                 vi->vi_width = COL;
 403         if (vi->vi_height > ROW)
 404                 vi->vi_height = ROW;
 405
 406         sc->sc_xmargin = (sc->sc_width - (vi->vi_width * vi->vi_cwidth)) / 2;
 407         sc->sc_ymargin = (sc->sc_height - (vi->vi_height * vi->vi_cheight))/2;
 408
 409         /*
 410          * Avoid huge amounts of conditional code in syscons by
 411          * defining a dummy h/w text display buffer.
 412          */
 413         adp->va_window = (vm_offset_t) ofwfb_static_window;
 414
 415         /*
 416          * Enable future font-loading and flag color support, as well as
 417          * adding V_ADP_MODECHANGE so that we ofwfb_set_mode() gets called
 418          * when the X server shuts down. This enables us to get the console
 419          * back when X disappears.
 420          */
 421         adp->va_flags |= V_ADP_FONT | V_ADP_COLOR | V_ADP_MODECHANGE;
 422
 423         ofwfb_set_mode(&sc->sc_va, 0);
 424
 425         vid_register(&sc->sc_va);
 426
 427         return (0);
 428 }
 429
 430 static int
 431 ofwfb_get_info(video_adapter_t *adp, int mode, video_info_t *info)
 432 {
 433         bcopy(&adp->va_info, info, sizeof(*info));
 434         return (0);
 435 }
 436
 437 static int
 438 ofwfb_query_mode(video_adapter_t *adp, video_info_t *info)
 439 {
 440         TODO;
 441         return (0);
 442 }
 443
 444 static int
 445 ofwfb_set_mode(video_adapter_t *adp, int mode)
 446 {
 447         struct ofwfb_softc *sc;
 448         char name[64];
 449         ihandle_t ih;
 450         int i, retval;
 451
 452         sc = (struct ofwfb_softc *)adp;
 453
 454         if (ofwfb_reset_on_switch) {
 455                 /*
 456                  * Open the display device, which will initialize it.
 457                  */
 458
 459                 memset(name, 0, sizeof(name));
 460                 OF_package_to_path(sc->sc_node, name, sizeof(name));
 461                 ih = OF_open(name);
 462
 463                 if (sc->sc_depth == 8) {
 464                         /*
 465                          * Install the ISO6429 colormap - older OFW systems
 466                          * don't do this by default
 467                          */
 468                         for (i = 0; i < 16; i++) {
 469                                 OF_call_method("color!", ih, 4, 1,
 470                                                    ofwfb_cmap[i].red,
 471                                                    ofwfb_cmap[i].green,
 472                                                    ofwfb_cmap[i].blue,
 473                                                    i,
 474                                                    &retval);
 475                         }
 476                 }
 477         }
 478
 479         ofwfb_blank_display(&sc->sc_va, V_DISPLAY_ON);
 480
 481         return (0);
 482 }
 483
 484 static int
 485 ofwfb_save_font(video_adapter_t *adp, int page, int size, int width,
 486     u_char *data, int c, int count)
 487 {
 488         TODO;
 489         return (0);
 490 }
 491
 492 static int
 493 ofwfb_load_font(video_adapter_t *adp, int page, int size, int width,
 494     u_char *data, int c, int count)
 495 {
 496         struct ofwfb_softc *sc;
 497
 498         sc = (struct ofwfb_softc *)adp;
 499
 500         /*
 501          * syscons code has already determined that current width/height
 502          * are unchanged for this new font
 503          */
 504         sc->sc_font = data;
 505         return (0);
 506 }
 507
 508 static int
 509 ofwfb_show_font(video_adapter_t *adp, int page)
 510 {
 511
 512         return (0);
 513 }
 514
 515 static int
 516 ofwfb_save_palette(video_adapter_t *adp, u_char *palette)
 517 {
 518         /* TODO; */
 519         return (0);
 520 }
 521
 522 static int
 523 ofwfb_load_palette(video_adapter_t *adp, u_char *palette)
 524 {
 525         /* TODO; */
 526         return (0);
 527 }
 528
 529 static int
 530 ofwfb_set_border8(video_adapter_t *adp, int border)
 531 {
 532         struct ofwfb_softc *sc;
 533         int i, j;
 534         uint8_t *addr;
 535         uint8_t bground;
 536
 537         sc = (struct ofwfb_softc *)adp;
 538
 539         bground = ofwfb_background(border);
 540
 541         /* Set top margin */
 542         addr = (uint8_t *) sc->sc_addr;
 543         for (i = 0; i < sc->sc_ymargin; i++) {
 544                 for (j = 0; j < sc->sc_width; j++) {
 545                         *(addr + j) = bground;
 546                 }
 547                 addr += sc->sc_stride;
 548         }
 549
 550         /* bottom margin */
 551         addr = (uint8_t *) sc->sc_addr + (sc->sc_height - sc->sc_ymargin)*sc->sc_stride;
 552         for (i = 0; i < sc->sc_ymargin; i++) {
 553                 for (j = 0; j < sc->sc_width; j++) {
 554                         *(addr + j) = bground;
 555                 }
 556                 addr += sc->sc_stride;
 557         }
 558
 559         /* remaining left and right borders */
 560         addr = (uint8_t *) sc->sc_addr + sc->sc_ymargin*sc->sc_stride;
 561         for (i = 0; i < sc->sc_height - 2*sc->sc_xmargin; i++) {
 562                 for (j = 0; j < sc->sc_xmargin; j++) {
 563                         *(addr + j) = bground;
 564                         *(addr + j + sc->sc_width - sc->sc_xmargin) = bground;
 565                 }
 566                 addr += sc->sc_stride;
 567         }
 568
 569         return (0);
 570 }
 571
 572 static int
 573 ofwfb_set_border32(video_adapter_t *adp, int border)
 574 {
 575         /* XXX Be lazy for now and blank entire screen */
 576         return (ofwfb_blank_display32(adp, border));
 577 }
 578
 579 static int
 580 ofwfb_set_border(video_adapter_t *adp, int border)
 581 {
 582         struct ofwfb_softc *sc;
 583
 584         sc = (struct ofwfb_softc *)adp;
 585
 586         return ((*sc->sc_set_border)(adp, border));
 587 }
 588
 589 static int
 590 ofwfb_save_state(video_adapter_t *adp, void *p, size_t size)
 591 {
 592         TODO;
 593         return (0);
 594 }
 595
 596 static int
 597 ofwfb_load_state(video_adapter_t *adp, void *p)
 598 {
 599         TODO;
 600         return (0);
 601 }
 602
 603 static int
 604 ofwfb_set_win_org(video_adapter_t *adp, off_t offset)
 605 {
 606         TODO;
 607         return (0);
 608 }
 609
 610 static int
 611 ofwfb_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
 612 {
 613         *col = 0;
 614         *row = 0;
 615
 616         return (0);
 617 }
 618
 619 static int
 620 ofwfb_set_hw_cursor(video_adapter_t *adp, int col, int row)
 621 {
 622
 623         return (0);
 624 }
 625
 626 static int
 627 ofwfb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
 628     int celsize, int blink)
 629 {
 630         return (0);
 631 }
 632
 633 static int
 634 ofwfb_blank_display8(video_adapter_t *adp, int mode)
 635 {
 636         struct ofwfb_softc *sc;
 637         int i;
 638         uint32_t *addr;
 639         uint32_t color;
 640         uint32_t end;
 641
 642         sc = (struct ofwfb_softc *)adp;
 643         addr = (uint32_t *) sc->sc_addr;
 644         end = (sc->sc_stride/4) * sc->sc_height;
 645
 646         /* Splat 4 pixels at once. */
 647         color = (ofwfb_background(SC_NORM_ATTR) << 24) |
 648             (ofwfb_background(SC_NORM_ATTR) << 16) |
 649             (ofwfb_background(SC_NORM_ATTR) << 8) |
 650             (ofwfb_background(SC_NORM_ATTR));
 651
 652         for (i = 0; i < end; i++)
 653                 *(addr + i) = color;
 654
 655         return (0);
 656 }
 657
 658 static int
 659 ofwfb_blank_display32(video_adapter_t *adp, int mode)
 660 {
 661         struct ofwfb_softc *sc;
 662         int i;
 663         uint32_t *addr, blank;
 664
 665         sc = (struct ofwfb_softc *)adp;
 666         addr = (uint32_t *) sc->sc_addr;
 667         blank = ofwfb_pix32(sc, ofwfb_background(SC_NORM_ATTR));
 668
 669         for (i = 0; i < (sc->sc_stride/4)*sc->sc_height; i++)
 670                 *(addr + i) = blank;
 671
 672         return (0);
 673 }
 674
 675 static int
 676 ofwfb_blank_display(video_adapter_t *adp, int mode)
 677 {
 678         struct ofwfb_softc *sc;
 679
 680         sc = (struct ofwfb_softc *)adp;
 681
 682         return ((*sc->sc_blank)(adp, mode));
 683 }
 684
 685 static int
 686 ofwfb_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
 687     int prot, vm_memattr_t *memattr)
 688 {
 689         struct ofwfb_softc *sc;
 690         int i;
 691
 692         sc = (struct ofwfb_softc *)adp;
 693
 694         /*
 695          * Make sure the requested address lies within the PCI device's
 696          * assigned addrs
 697          */
 698         for (i = 0; i < sc->sc_num_pciaddrs; i++)
 699           if (offset >= sc->sc_pciaddrs[i].phys_lo &&
 700             offset < (sc->sc_pciaddrs[i].phys_lo + sc->sc_pciaddrs[i].size_lo))
 701                 {
 702                         /*
 703                          * If this is a prefetchable BAR, we can (and should)
 704                          * enable write-combining.
 705                          */
 706                         if (sc->sc_pciaddrs[i].phys_hi &
 707                             OFW_PCI_PHYS_HI_PREFETCHABLE)
 708                                 *memattr = VM_MEMATTR_WRITE_COMBINING;
 709
 710                         *paddr = offset;
 711                         return (0);
 712                 }
 713
 714         /*
 715          * Hack for Radeon...
 716          */
 717         if (ofwfb_ignore_mmap_checks) {
 718                 *paddr = offset;
 719                 return (0);
 720         }
 721
 722         /*
 723          * This might be a legacy VGA mem request: if so, just point it at the
 724          * framebuffer, since it shouldn't be touched
 725          */
 726         if (offset < sc->sc_stride*sc->sc_height) {
 727                 *paddr = sc->sc_addr + offset;
 728                 return (0);
 729         }
 730
 731         /*
 732          * Error if we didn't have a better idea.
 733          */
 734         if (sc->sc_num_pciaddrs == 0)
 735                 return (ENOMEM);
 736
 737         return (EINVAL);
 738 }
 739
 740 static int
 741 ofwfb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t data)
 742 {
 743
 744         return (0);
 745 }
 746
 747 static int
 748 ofwfb_clear(video_adapter_t *adp)
 749 {
 750         TODO;
 751         return (0);
 752 }
 753
 754 static int
 755 ofwfb_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 756 {
 757         TODO;
 758         return (0);
 759 }
 760
 761 static int
 762 ofwfb_bitblt(video_adapter_t *adp, ...)
 763 {
 764         TODO;
 765         return (0);
 766 }
 767
 768 static int
 769 ofwfb_diag(video_adapter_t *adp, int level)
 770 {
 771         TODO;
 772         return (0);
 773 }
 774
 775 static int
 776 ofwfb_save_cursor_palette(video_adapter_t *adp, u_char *palette)
 777 {
 778         TODO;
 779         return (0);
 780 }
 781
 782 static int
 783 ofwfb_load_cursor_palette(video_adapter_t *adp, u_char *palette)
 784 {
 785         TODO;
 786         return (0);
 787 }
 788
 789 static int
 790 ofwfb_copy(video_adapter_t *adp, vm_offset_t src, vm_offset_t dst, int n)
 791 {
 792         TODO;
 793         return (0);
 794 }
 795
 796 static int
 797 ofwfb_putp(video_adapter_t *adp, vm_offset_t off, uint32_t p, uint32_t a,
 798     int size, int bpp, int bit_ltor, int byte_ltor)
 799 {
 800         TODO;
 801         return (0);
 802 }
 803
 804 static int
 805 ofwfb_putc8(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
 806 {
 807         struct ofwfb_softc *sc;
 808         int row;
 809         int col;
 810         int i;
 811         uint32_t *addr;
 812         u_char *p, fg, bg;
 813         union {
 814                 uint32_t l;
 815                 uint8_t  c[4];
 816         } ch1, ch2;
 817
 818         sc = (struct ofwfb_softc *)adp;
 819         row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
 820         col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
 821         p = sc->sc_font + c*sc->sc_font_height;
 822         addr = (u_int32_t *)((uintptr_t)sc->sc_addr
 823                 + (row + sc->sc_ymargin)*sc->sc_stride
 824                 + col + sc->sc_xmargin);
 825
 826         fg = ofwfb_foreground(a);
 827         bg = ofwfb_background(a);
 828
 829         for (i = 0; i < sc->sc_font_height; i++) {
 830                 u_char fline = p[i];
 831
 832                 /*
 833                  * Assume that there is more background than foreground
 834                  * in characters and init accordingly
 835                  */
 836                 ch1.l = ch2.l = (bg << 24) | (bg << 16) | (bg << 8) | bg;
 837
 838                 /*
 839                  * Calculate 2 x 4-chars at a time, and then
 840                  * write these out.
 841                  */
 842                 if (fline & 0x80) ch1.c[0] = fg;
 843                 if (fline & 0x40) ch1.c[1] = fg;
 844                 if (fline & 0x20) ch1.c[2] = fg;
 845                 if (fline & 0x10) ch1.c[3] = fg;
 846
 847                 if (fline & 0x08) ch2.c[0] = fg;
 848                 if (fline & 0x04) ch2.c[1] = fg;
 849                 if (fline & 0x02) ch2.c[2] = fg;
 850                 if (fline & 0x01) ch2.c[3] = fg;
 851
 852                 addr[0] = ch1.l;
 853                 addr[1] = ch2.l;
 854                 addr += (sc->sc_stride / sizeof(u_int32_t));
 855         }
 856
 857         return (0);
 858 }
 859
 860 static int
 861 ofwfb_putc32(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
 862 {
 863         struct ofwfb_softc *sc;
 864         int row;
 865         int col;
 866         int i, j, k;
 867         uint32_t *addr, fg, bg;
 868         u_char *p;
 869
 870         sc = (struct ofwfb_softc *)adp;
 871         row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
 872         col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
 873         p = sc->sc_font + c*sc->sc_font_height;
 874         addr = (uint32_t *)sc->sc_addr
 875                 + (row + sc->sc_ymargin)*(sc->sc_stride/4)
 876                 + col + sc->sc_xmargin;
 877
 878         fg = ofwfb_pix32(sc, ofwfb_foreground(a));
 879         bg = ofwfb_pix32(sc, ofwfb_background(a));
 880
 881         for (i = 0; i < sc->sc_font_height; i++) {
 882                 for (j = 0, k = 7; j < 8; j++, k--) {
 883                         if ((p[i] & (1 << k)) == 0)
 884                                 *(addr + j) = bg;
 885                         else
 886                                 *(addr + j) = fg;
 887                 }
 888                 addr += (sc->sc_stride/4);
 889         }
 890
 891         return (0);
 892 }
 893
 894 static int
 895 ofwfb_putc(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
 896 {
 897         struct ofwfb_softc *sc;
 898
 899         sc = (struct ofwfb_softc *)adp;
 900
 901         return ((*sc->sc_putc)(adp, off, c, a));
 902 }
 903
 904 static int
 905 ofwfb_puts(video_adapter_t *adp, vm_offset_t off, u_int16_t *s, int len)
 906 {
 907         int i;
 908
 909         for (i = 0; i < len; i++) {
 910                 ofwfb_putc(adp, off + i, s[i] & 0xff, (s[i] & 0xff00) >> 8);
 911         }
 912         return (0);
 913 }
 914
 915 static int
 916 ofwfb_putm(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
 917     uint32_t pixel_mask, int size, int width)
 918 {
 919         struct ofwfb_softc *sc;
 920
 921         sc = (struct ofwfb_softc *)adp;
 922
 923         return ((*sc->sc_putm)(adp, x, y, pixel_image, pixel_mask, size,
 924             width));
 925 }
 926
 927 static int
 928 ofwfb_putm8(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
 929     uint32_t pixel_mask, int size, int width)
 930 {
 931         struct ofwfb_softc *sc;
 932         int i, j, k;
 933         uint8_t *addr;
 934         u_char fg, bg;
 935
 936         sc = (struct ofwfb_softc *)adp;
 937         addr = (u_int8_t *)((uintptr_t)sc->sc_addr
 938                 + (y + sc->sc_ymargin)*sc->sc_stride
 939                 + x + sc->sc_xmargin);
 940
 941         fg = ofwfb_foreground(SC_NORM_ATTR);
 942         bg = ofwfb_background(SC_NORM_ATTR);
 943
 944         for (i = 0; i < size && i+y < sc->sc_height - 2*sc->sc_ymargin; i++) {
 945                 /*
 946                  * Calculate 2 x 4-chars at a time, and then
 947                  * write these out.
 948                  */
 949                 for (j = 0, k = width; j < 8; j++, k--) {
 950                         if (x + j >= sc->sc_width - 2*sc->sc_xmargin)
 951                                 continue;
 952
 953                         if (pixel_image[i] & (1 << k))
 954                                 addr[j] = (addr[j] == fg) ? bg : fg;
 955                 }
 956
 957                 addr += (sc->sc_stride / sizeof(u_int8_t));
 958         }
 959
 960         return (0);
 961 }
 962
 963 static int
 964 ofwfb_putm32(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
 965     uint32_t pixel_mask, int size, int width)
 966 {
 967         struct ofwfb_softc *sc;
 968         int i, j, k;
 969         uint32_t fg, bg;
 970         uint32_t *addr;
 971
 972         sc = (struct ofwfb_softc *)adp;
 973         addr = (uint32_t *)sc->sc_addr
 974                 + (y + sc->sc_ymargin)*(sc->sc_stride/4)
 975                 + x + sc->sc_xmargin;
 976
 977         fg = ofwfb_pix32(sc, ofwfb_foreground(SC_NORM_ATTR));
 978         bg = ofwfb_pix32(sc, ofwfb_background(SC_NORM_ATTR));
 979
 980         for (i = 0; i < size && i+y < sc->sc_height - 2*sc->sc_ymargin; i++) {
 981                 for (j = 0, k = width; j < 8; j++, k--) {
 982                         if (x + j >= sc->sc_width - 2*sc->sc_xmargin)
 983                                 continue;
 984
 985                         if (pixel_image[i] & (1 << k))
 986                                 *(addr + j) = (*(addr + j) == fg) ? bg : fg;
 987                 }
 988                 addr += (sc->sc_stride/4);
 989         }
 990
 991         return (0);
 992 }
 993
 994 /*
 995  * Define the syscons nexus device attachment
 996  */
 997 static void
 998 ofwfb_scidentify(driver_t *driver, device_t parent)
 999 {
1000         device_t child;
1001
1002         /*
1003          * Add with a priority guaranteed to make it last on
1004          * the device list
1005          */
1006         child = BUS_ADD_CHILD(parent, INT_MAX, SC_DRIVER_NAME, 0);
1007 }
1008
1009 static int
1010 ofwfb_scprobe(device_t dev)
1011 {
1012         int error;
1013
1014         device_set_desc(dev, "System console");
1015
1016         error = sc_probe_unit(device_get_unit(dev),
1017             device_get_flags(dev) | SC_AUTODETECT_KBD);
1018         if (error != 0)
1019                 return (error);
1020
1021         /* This is a fake device, so make sure we added it ourselves */
1022         return (BUS_PROBE_NOWILDCARD);
1023 }
1024
1025 static int
1026 ofwfb_scattach(device_t dev)
1027 {
1028         return (sc_attach_unit(device_get_unit(dev),
1029             device_get_flags(dev) | SC_AUTODETECT_KBD));
1030 }
1031
1032 static device_method_t ofwfb_sc_methods[] = {
1033         DEVMETHOD(device_identify,      ofwfb_scidentify),
1034         DEVMETHOD(device_probe,         ofwfb_scprobe),
1035         DEVMETHOD(device_attach,        ofwfb_scattach),
1036         { 0, 0 }
1037 };
1038
1039 static driver_t ofwfb_sc_driver = {
1040         SC_DRIVER_NAME,
1041         ofwfb_sc_methods,
1042         sizeof(sc_softc_t),
1043 };
1044
1045 DRIVER_MODULE(ofwfb, nexus, ofwfb_sc_driver, 0, 0);
1046
1047 /*
1048  * Utility routines from <dev/fb/fbreg.h>
1049  */
1050 void
1051 ofwfb_bcopy(const void *s, void *d, size_t c)
1052 {
1053         bcopy(s, d, c);
1054 }
1055
1056 void
1057 ofwfb_bzero(void *d, size_t c)
1058 {
1059         bzero(d, c);
1060 }
1061
1062 void
1063 ofwfb_fillw(int pat, void *base, size_t cnt)
1064 {
1065         u_int16_t *bptr = base;
1066
1067         while (cnt--)
1068                 *bptr++ = pat;
1069 }
1070
1071 u_int16_t
1072 ofwfb_readw(u_int16_t *addr)
1073 {
1074         return (*addr);
1075 }
1076
1077 void
1078 ofwfb_writew(u_int16_t *addr, u_int16_t val)
1079 {
1080         *addr = val;
1081 }