sys/arch/amiga/dev/grf_rtreg.h

   1 /*      $NetBSD: grf_rtreg.h,v 1.14 2005/12/24 20:06:47 perry Exp $     */
   2
   3 /*
   4  * Copyright (c) 1993 Markus Wild
   5  * Copyright (c) 1993 Lutz Vieweg
   6  * All rights reserved.
   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  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by Lutz Vieweg.
  19  * 4. The name of the author may not be used to endorse or promote products
  20  *    derived from this software without specific prior written permission
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33 #ifndef _GRF_RTREG_H
  34 #define _GRF_RTREG_H
  35
  36 /*
  37  * This driver for the MacroSystem Retina board was only possible,
  38  * because MacroSystem provided information about the pecularities
  39  * of the board. THANKS! Competition in Europe among gfx board
  40  * manufacturers is rather tough, so Lutz Vieweg, who wrote the
  41  * initial driver, has made an agreement with MS not to document
  42  * the driver source (see also his comment below).
  43  * -> ALL comments and register defines after
  44  * -> " -------------- START OF CODE -------------- "
  45  * -> have been added by myself (mw) from studying the publically
  46  * -> available "NCR 77C22E+" Data Manual
  47  */
  48 /*
  49  * This code offers low-level routines to access the Retina graphics-board
  50  * manufactured by MS MacroSystem GmbH from within NetBSD for the Amiga.
  51  *
  52  * Thanks to MacroSystem for providing me with the necessary information
  53  * to create theese routines. The sparse documentation of this code
  54  * results from the agreements between MS and me.
  55  */
  56
  57 #if 0
  58 /* these are in dev/devices.h */
  59
  60 /* definitions to find the autoconfig-board under
  61    AmigaDOS */
  62
  63 #define RETINA_MANUFACTURER     0x4754
  64 #define RETINA_PRODUCT          6
  65 #define RETINA_SERIALNUMBER     1
  66 #endif
  67
  68
  69 /*
  70    For more information on the structure entries take a look at
  71    grf_rt.cc and ite_rt.cc.
  72 */
  73
  74 struct MonDef {
  75
  76         /* first the general monitor characteristics */
  77
  78         unsigned long  FQ;
  79         unsigned char  FLG;
  80
  81         unsigned short MW;  /* screen width in pixels */
  82                             /* has to be at least a multiple of 8, */
  83                             /* has to be a multiple of 64 in 256-color mode */
  84                             /* if you want to use some great tricks */
  85                             /* to speed up the vertical scrolling */
  86         unsigned short MH;  /* screen height in pixels */
  87
  88         unsigned short HBS;
  89         unsigned short HSS;
  90         unsigned short HSE;
  91         unsigned short HBE;
  92         unsigned short HT;
  93         unsigned short VBS;
  94         unsigned short VSS;
  95         unsigned short VSE;
  96         unsigned short VBE;
  97         unsigned short VT;
  98
  99         unsigned short DEP;  /* Color-depth, 4 for text-mode */
 100                              /* 8 enables 256-color graphics-mode, */
 101                              /* 16 and 24bit gfx not supported yet */
 102
 103         unsigned char * PAL; /* points to 16*3 byte RGB-palette data */
 104                              /* use LoadPalette() to set colors 0..255 */
 105                              /* in 256-color-gfx mode */
 106
 107         /* all following entries are font-specific in
 108            text mode. Make sure your monitor
 109            parameters are calculated for the
 110            appropriate font width and height!
 111         */
 112
 113        unsigned short  TX;     /* Text-mode (DEP=4):          */
 114                                /* screen-width  in characters */
 115                                /* currently, TX has to be a   */
 116                                /* multiple of 16!             */
 117
 118                                /* Gfx-mode (DEP > 4)          */
 119                                /* "logical" screen-width,     */
 120                                /* use values > MW to allow    */
 121                                /* hardware-panning            */
 122                                /* has to be a multiple of 8   */
 123
 124        unsigned short  TY;     /* Text-mode:                  */
 125                                /* screen-height in characters */
 126
 127                                /* Gfx-mode: "logical" screen  */
 128                                /* height for panning          */
 129
 130        /* the following values are currently unused for gfx-mode */
 131
 132         unsigned short  XY;     /* TX*TY (speeds up some calcs.) */
 133
 134         unsigned short  FX;     /* font-width (valid values: 4,7-16) */
 135         unsigned short  FY;     /* font-height (valid range: 1-32) */
 136         unsigned char * FData;  /* pointer to the font-data */
 137
 138         /* The font data is simply an array of bytes defining
 139            the chars in ascending order, line by line. If your
 140            font is wider than 8 pixel, FData has to be an
 141            array of words. */
 142
 143         unsigned short  FLo;    /* lowest character defined */
 144         unsigned short  FHi;    /* highest char. defined */
 145
 146 };
 147
 148
 149 #if 0
 150 /* Some ready-made MonDef structures are available in grf_rt.cc */
 151
 152 extern struct MonDef MON_640_512_60;
 153 extern struct MonDef MON_768_600_60;
 154 extern struct MonDef MON_768_600_80;
 155
 156 /* text-screen resolutions wider than 1024 are currently damaged.
 157    The VRAM access seems to become unstable at higher resolutions.
 158    This may hopefully be subject of change.
 159 */
 160
 161 extern struct MonDef MON_1024_768_80;
 162 extern struct MonDef MON_1024_1024_59;
 163
 164 /* WARNING: THE FOLLOWING MONITOR MODES EXCEED THE 90-MHz LIMIT THE PROCESSOR
 165             HAS BEEN SPECIFIED FOR. USE AT YOUR OWN RISK (AND THINK ABOUT
 166             MOUNTING SOME COOLING DEVICE AT THE PROCESSOR AND RAMDAC)!     */
 167 extern struct MonDef MON_1280_1024_60;
 168 extern struct MonDef MON_1280_1024_69;
 169
 170 /* Default monitor (change if this is too much for your monitor :-)) */
 171 #define DEFAULT_MONDEF  MON_768_600_80
 172
 173 #else
 174
 175 /* nothing exported for now... */
 176
 177 #endif
 178
 179 /* a standard 16-color palette is available in grf_rt.cc
 180    and used by the standard monitor-definitions above */
 181 extern unsigned char NCRStdPalette[];
 182
 183 /* The prototypes for C
 184    with a little explanation
 185
 186         unsigned char * InitNCR(volatile void *BoardAddress, struct MonDef * md = &MON_640_512_60);
 187
 188    This routine initialises the Retina hardware, opens a
 189    text- or gfx-mode screen, depending on the value of MonDef.DEP,
 190    and sets the cursor to position 0.
 191    It takes as arguments a pointer to the hardware-base
 192    address as it is denoted in the DevConf structure
 193    of the AmigaDOS, and a pointer to a struct MonDef
 194    which describes the screen-mode parameters.
 195
 196    The routine returns 0 if it was unable to open the screen,
 197    or an unsigned char * to the display/attribute memory
 198    when it succeeded. The organisation of the display memory
 199    is a little strange in text-mode (Intel-typically...) :
 200
 201    Byte  00    01    02    03    04     05    06   etc.
 202        Char0  Attr0  --    --   Char1 Attr1   --   etc.
 203
 204    You may set a character and its associated attribute byte
 205    with a single word-access, or you may perform to byte writes
 206    for the char and attribute. Each 2. word has no meaning,
 207    and writes to theese locations are ignored.
 208
 209    The attribute byte for each character has the following
 210    structure:
 211
 212    Bit  7     6     5     4     3     2     1     0
 213       BLINK BACK2 BACK1 BACK0 FORE3 FORE2 FORE1 FORE0
 214
 215    Were FORE is the foreground-color index (0-15) and
 216    BACK is the background color index (0-7). BLINK
 217    enables blinking for the associated character.
 218    The higher 8 colors in the standard palette are
 219    lighter than the lower 8, so you may see FORE3 as
 220    an intensity bit. If FORE == 1 or FORE == 9 and
 221    BACK == 0 the character is underlined. Since I don't
 222    think this looks good, it will probably change in a
 223    future release.
 224
 225    There's no routine "SetChar" or "SetAttr" provided,
 226    because I think it's so trivial... a function call
 227    would be pure overhead. As an example, a routine
 228    to set the char code and attribute at position x,y:
 229    (assumed the value returned by InitNCR was stored
 230     into "DispMem", the actual MonDef struct * is hold
 231     in "MDef")
 232
 233    void SetChar(unsigned char chr, unsigned char attr,
 234                 unsigned short x, unsigned short y) {
 235
 236       unsigned struct MonDef * md = MDef;
 237       unsigned char * c = DispMem + x*4 + y*md->TX*4;
 238
 239       *c++ = chr;
 240       *c   = attr;
 241
 242    }
 243
 244    In Gfx-mode, the memory organisation is rather simple,
 245    1 byte per pixel in 256-color mode, one pixel after
 246    each other, line by line.
 247
 248    Currently, InitNCR() disables the Retina VBLANK IRQ,
 249    but beware: When running the Retina WB-Emu under
 250    AmigaDOS, the VBLANK IRQ is ENABLED.
 251
 252         void SetCursorPos(unsigned short pos);
 253
 254    This routine sets the hardware-cursor position
 255    to the screen location pos. pos can be calculated
 256    as (x + y * md->TY).
 257    Text-mode only!
 258
 259         void ScreenUp(void);
 260
 261    A somewhat optimized routine that scrolls the whole
 262    screen up one row. A good idea to compile this piece
 263    of code with optimization enabled.
 264    Text-mode only!
 265
 266         void ScreenDown(void);
 267
 268    A somewhat optimized routine that scrolls the whole
 269    screen down one row. A good idea to compile this piece
 270    of code with optimization enabled.
 271    Text-mode only!
 272
 273         unsigned char * SetSegmentPtr(unsigned long address);
 274
 275    Sets the beginning of the 64k-memory segment to the
 276    address specified by the unsigned long. If address MOD 64
 277    is != 0, the return value will point to the segments
 278    start in the Amiga address space + (address MOD 64).
 279    Don't use more than (65536-64) bytes in the segment
 280    you set if you aren't sure that (address MOD 64) == 0.
 281    See retina.doc from MS for further information.
 282
 283         void ClearScreen(unsigned char color);
 284
 285    Fills the whole screen with "color" - 256-color mode only!
 286
 287         void LoadPalette(unsigned char * pal, unsigned char firstcol,
 288                          unsigned char colors);
 289
 290    Loads the palette-registers. "pal" points to an array of unsigned char
 291    triplets, for the red, green and blue component. "firstcol" determines the
 292    number of the first palette-register to load (256 available). "colors"
 293    is the number of colors you want to put in the palette registers.
 294
 295         void SetPalette(unsigned char colornum, unsigned char red,
 296                         unsigned char green, unsigned char blue);
 297
 298    Allows you to set a single color in the palette, "colornum" is the number
 299    of the palette entry (256 available), "red", "green" and "blue" are the
 300    three components.
 301
 302         void SetPanning(unsigned short xoff, unsigned short yoff);
 303
 304    Moves the logical coordinate (xoff, yoff) to the upper left corner
 305    of your screen. Of course, you shouldn't specify excess values that would
 306    show garbage in the lower right area of your screen... SetPanning()
 307    does NOT check for boundaries.
 308 */
 309
 310 /* -------------- START OF CODE -------------- */
 311
 312 /* read VGA register */
 313 #define vgar(ba, reg) (*(((volatile unsigned char *)ba)+reg))
 314
 315 /* write VGA register */
 316 #define vgaw(ba, reg, val) \
 317         *(((volatile unsigned char *)ba)+reg) = val
 318
 319 /* defines for the used register addresses (mw)
 320
 321    NOTE: there are some registers that have different addresses when
 322          in mono or color mode. We only support color mode, and thus
 323          some addresses won't work in mono-mode! */
 324
 325 /* General Registers: */
 326 #define GREG_STATUS0_R          0x43C2
 327 #define GREG_STATUS1_R          0x43DA
 328 #define GREG_MISC_OUTPUT_R      0x43CC
 329 #define GREG_MISC_OUTPUT_W      0x43C2
 330 #define GREG_FEATURE_CONTROL_R  0x43CA
 331 #define GREG_FEATURE_CONTROL_W  0x43DA
 332 #define GREG_POS                0x4102
 333
 334 /* Attribute Controller: */
 335 #define ACT_ADDRESS             0x43C0
 336 #define ACT_ADDRESS_R           0x03C0
 337 #define ACT_ADDRESS_W           0x43C0
 338 #define ACT_ID_PALETTE0         0x00
 339 #define ACT_ID_PALETTE1         0x01
 340 #define ACT_ID_PALETTE2         0x02
 341 #define ACT_ID_PALETTE3         0x03
 342 #define ACT_ID_PALETTE4         0x04
 343 #define ACT_ID_PALETTE5         0x05
 344 #define ACT_ID_PALETTE6         0x06
 345 #define ACT_ID_PALETTE7         0x07
 346 #define ACT_ID_PALETTE8         0x08
 347 #define ACT_ID_PALETTE9         0x09
 348 #define ACT_ID_PALETTE10        0x0A
 349 #define ACT_ID_PALETTE11        0x0B
 350 #define ACT_ID_PALETTE12        0x0C
 351 #define ACT_ID_PALETTE13        0x0D
 352 #define ACT_ID_PALETTE14        0x0E
 353 #define ACT_ID_PALETTE15        0x0F
 354 #define ACT_ID_ATTR_MODE_CNTL   0x10
 355 #define ACT_ID_OVERSCAN_COLOR   0x11
 356 #define ACT_ID_COLOR_PLANE_ENA  0x12
 357 #define ACT_ID_HOR_PEL_PANNING  0x13
 358 #define ACT_ID_COLOR_SELECT     0x14
 359
 360 /* Graphics Controller: */
 361 #define GCT_ADDRESS             0x43CE
 362 #define GCT_ADDRESS_R           0x03CE
 363 #define GCT_ADDRESS_W           0x03CE
 364 #define GCT_ID_SET_RESET        0x00
 365 #define GCT_ID_ENABLE_SET_RESET 0x01
 366 #define GCT_ID_COLOR_COMPARE    0x02
 367 #define GCT_ID_DATA_ROTATE      0x03
 368 #define GCT_ID_READ_MAP_SELECT  0x04
 369 #define GCT_ID_GRAPHICS_MODE    0x05
 370 #define GCT_ID_MISC             0x06
 371 #define GCT_ID_COLOR_XCARE      0x07
 372 #define GCT_ID_BITMASK          0x08
 373
 374 /* Sequencer: */
 375 #define SEQ_ADDRESS             0x43C4
 376 #define SEQ_ADDRESS_R           0x03C4
 377 #define SEQ_ADDRESS_W           0x03C4
 378 #define SEQ_ID_RESET            0x00
 379 #define SEQ_ID_CLOCKING_MODE    0x01
 380 #define SEQ_ID_MAP_MASK         0x02
 381 #define SEQ_ID_CHAR_MAP_SELECT  0x03
 382 #define SEQ_ID_MEMORY_MODE      0x04
 383 #define SEQ_ID_EXTENDED_ENABLE  0x05    /* down from here, all seq registers are NCR extensions */
 384 #define SEQ_ID_UNKNOWN1         0x06    /* it does exist so it's probably usefull */
 385 #define SEQ_ID_UNKNOWN2         0x07    /* it does exist so it's probably usefull */
 386 #define SEQ_ID_CHIP_ID          0x08
 387 #define SEQ_ID_UNKNOWN3         0x09    /* it does exist so it's probably usefull */
 388 #define SEQ_ID_CURSOR_COLOR1    0x0A
 389 #define SEQ_ID_CURSOR_COLOR0    0x0B
 390 #define SEQ_ID_CURSOR_CONTROL   0x0C
 391 #define SEQ_ID_CURSOR_X_LOC_HI  0x0D
 392 #define SEQ_ID_CURSOR_X_LOC_LO  0x0E
 393 #define SEQ_ID_CURSOR_Y_LOC_HI  0x0F
 394 #define SEQ_ID_CURSOR_Y_LOC_LO  0x10
 395 #define SEQ_ID_CURSOR_X_INDEX   0x11
 396 #define SEQ_ID_CURSOR_Y_INDEX   0x12
 397 #define SEQ_ID_CURSOR_STORE_HI  0x13    /* printed manual is wrong about these.. */
 398 #define SEQ_ID_CURSOR_STORE_LO  0x14
 399 #define SEQ_ID_CURSOR_ST_OFF_HI 0x15
 400 #define SEQ_ID_CURSOR_ST_OFF_LO 0x16
 401 #define SEQ_ID_CURSOR_PIXELMASK 0x17
 402 #define SEQ_ID_PRIM_HOST_OFF_HI 0x18
 403 #define SEQ_ID_PRIM_HOST_OFF_LO 0x19
 404 #define SEQ_ID_DISP_OFF_HI      0x1A
 405 #define SEQ_ID_DISP_OFF_LO      0x1B
 406 #define SEQ_ID_SEC_HOST_OFF_HI  0x1C
 407 #define SEQ_ID_SEC_HOST_OFF_LO  0x1D
 408 #define SEQ_ID_EXTENDED_MEM_ENA 0x1E
 409 #define SEQ_ID_EXT_CLOCK_MODE   0x1F
 410 #define SEQ_ID_EXT_VIDEO_ADDR   0x20
 411 #define SEQ_ID_EXT_PIXEL_CNTL   0x21
 412 #define SEQ_ID_BUS_WIDTH_FEEDB  0x22
 413 #define SEQ_ID_PERF_SELECT      0x23
 414 #define SEQ_ID_COLOR_EXP_WFG    0x24
 415 #define SEQ_ID_COLOR_EXP_WBG    0x25
 416 #define SEQ_ID_EXT_RW_CONTROL   0x26
 417 #define SEQ_ID_MISC_FEATURE_SEL 0x27
 418 #define SEQ_ID_COLOR_KEY_CNTL   0x28
 419 #define SEQ_ID_COLOR_KEY_MATCH  0x29
 420 #define SEQ_ID_UNKNOWN4         0x2A
 421 #define SEQ_ID_UNKNOWN5         0x2B
 422 #define SEQ_ID_UNKNOWN6         0x2C
 423 #define SEQ_ID_CRC_CONTROL      0x2D
 424 #define SEQ_ID_CRC_DATA_LOW     0x2E
 425 #define SEQ_ID_CRC_DATA_HIGH    0x2F
 426
 427 /* CRT Controller: */
 428 #define CRT_ADDRESS             0x43D4
 429 #define CRT_ADDRESS_R           0x03D4
 430 #define CRT_ADDRESS_W           0x03D4
 431 #define CRT_ID_HOR_TOTAL        0x00
 432 #define CRT_ID_HOR_DISP_ENA_END 0x01
 433 #define CRT_ID_START_HOR_BLANK  0x02
 434 #define CRT_ID_END_HOR_BLANK    0x03
 435 #define CRT_ID_START_HOR_RETR   0x04
 436 #define CRT_ID_END_HOR_RETR     0x05
 437 #define CRT_ID_VER_TOTAL        0x06
 438 #define CRT_ID_OVERFLOW         0x07
 439 #define CRT_ID_PRESET_ROW_SCAN  0x08
 440 #define CRT_ID_MAX_SCAN_LINE    0x09
 441 #define CRT_ID_CURSOR_START     0x0A
 442 #define CRT_ID_CURSOR_END       0x0B
 443 #define CRT_ID_START_ADDR_HIGH  0x0C
 444 #define CRT_ID_START_ADDR_LOW   0x0D
 445 #define CRT_ID_CURSOR_LOC_HIGH  0x0E
 446 #define CRT_ID_CURSOR_LOC_LOW   0x0F
 447 #define CRT_ID_START_VER_RETR   0x10
 448 #define CRT_ID_END_VER_RETR     0x11
 449 #define CRT_ID_VER_DISP_ENA_END 0x12
 450 #define CRT_ID_OFFSET           0x13
 451 #define CRT_ID_UNDERLINE_LOC    0x14
 452 #define CRT_ID_START_VER_BLANK  0x15
 453 #define CRT_ID_END_VER_BLANK    0x16
 454 #define CRT_ID_MODE_CONTROL     0x17
 455 #define CRT_ID_LINE_COMPARE     0x18
 456 #define CRT_ID_UNKNOWN1         0x19    /* are these register really void ? */
 457 #define CRT_ID_UNKNOWN2         0x1A
 458 #define CRT_ID_UNKNOWN3         0x1B
 459 #define CRT_ID_UNKNOWN4         0x1C
 460 #define CRT_ID_UNKNOWN5         0x1D
 461 #define CRT_ID_UNKNOWN6         0x1E
 462 #define CRT_ID_UNKNOWN7         0x1F
 463 #define CRT_ID_UNKNOWN8         0x20
 464 #define CRT_ID_UNKNOWN9         0x21
 465 #define CRT_ID_UNKNOWN10        0x22
 466 #define CRT_ID_UNKNOWN11        0x23
 467 #define CRT_ID_UNKNOWN12        0x24
 468 #define CRT_ID_UNKNOWN13        0x25
 469 #define CRT_ID_UNKNOWN14        0x26
 470 #define CRT_ID_UNKNOWN15        0x27
 471 #define CRT_ID_UNKNOWN16        0x28
 472 #define CRT_ID_UNKNOWN17        0x29
 473 #define CRT_ID_UNKNOWN18        0x2A
 474 #define CRT_ID_UNKNOWN19        0x2B
 475 #define CRT_ID_UNKNOWN20        0x2C
 476 #define CRT_ID_UNKNOWN21        0x2D
 477 #define CRT_ID_UNKNOWN22        0x2E
 478 #define CRT_ID_UNKNOWN23        0x2F
 479 #define CRT_ID_EXT_HOR_TIMING1  0x30    /* down from here, all crt registers are NCR extensions */
 480 #define CRT_ID_EXT_START_ADDR   0x31
 481 #define CRT_ID_EXT_HOR_TIMING2  0x32
 482 #define CRT_ID_EXT_VER_TIMING   0x33
 483
 484 /* Video DAC (these are *pure* guesses from the usage of these registers,
 485    I don't have a data sheet for this chip:-/) */
 486 #define VDAC_REG_D              0x800d  /* well.. */
 487 #define VDAC_REG_SELECT         0x8001  /* perhaps.. */
 488 #define VDAC_REG_DATA           0x8003  /* dito.. */
 489
 490 #define WGfx(ba, idx, val) \
 491         do { vgaw(ba, GCT_ADDRESS, idx); vgaw(ba, GCT_ADDRESS_W , val); } while (0)
 492
 493 #define WSeq(ba, idx, val) \
 494         do { vgaw(ba, SEQ_ADDRESS, idx); vgaw(ba, SEQ_ADDRESS_W , val); } while (0)
 495
 496 #define WCrt(ba, idx, val) \
 497         do { vgaw(ba, CRT_ADDRESS, idx); vgaw(ba, CRT_ADDRESS_W , val); } while (0)
 498
 499 #define WAttr(ba, idx, val) \
 500         do { vgaw(ba, ACT_ADDRESS, idx); vgaw(ba, ACT_ADDRESS_W, val); } while (0)
 501
 502 #define Map(m) \
 503         do { WGfx(ba, GCT_ID_READ_MAP_SELECT, m & 3 ); WSeq(ba, SEQ_ID_MAP_MASK, (1 << (m & 3))); } while (0)
 504
 505 static inline unsigned char RAttr(volatile void *ba, short idx) {
 506         vgaw (ba, ACT_ADDRESS, idx);
 507         return vgar (ba, ACT_ADDRESS_R);
 508 }
 509
 510 static inline unsigned char RSeq(volatile void *ba, short idx) {
 511         vgaw (ba, SEQ_ADDRESS, idx);
 512         return vgar (ba, SEQ_ADDRESS_R);
 513 }
 514
 515 static inline unsigned char RCrt(volatile void *ba, short idx) {
 516         vgaw (ba, CRT_ADDRESS, idx);
 517         return vgar (ba, CRT_ADDRESS_R);
 518 }
 519
 520 static inline unsigned char RGfx(volatile void *ba, short idx) {
 521         vgaw(ba, GCT_ADDRESS, idx);
 522         return vgar (ba, GCT_ADDRESS_R);
 523 }
 524
 525 int grfrt_cnprobe(void);
 526 void grfrt_iteinit(struct grf_softc *);
 527 #endif /* _GRF_RTREG_H */