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   1 /*
   2  * linux/drivers/video/neofb.c -- NeoMagic Framebuffer Driver
   3  *
   4  * Copyright (c) 2001-2002  Denis Oliver Kropp <dok@directfb.org>
   5  *
   6  *
   7  * Card specific code is based on XFree86's neomagic driver.
   8  * Framebuffer framework code is based on code of cyber2000fb.
   9  *
  10  * This file is subject to the terms and conditions of the GNU General
  11  * Public License.  See the file COPYING in the main directory of this
  12  * archive for more details.
  13  *
  14  *
  15  * 0.4.1
  16  *  - Cosmetic changes (dok)
  17  *
  18  * 0.4
  19  *  - Toshiba Libretto support, allow modes larger than LCD size if
  20  *    LCD is disabled, keep BIOS settings if internal/external display
  21  *    haven't been enabled explicitly
  22  *                          (Thomas J. Moore <dark@mama.indstate.edu>)
  23  *
  24  * 0.3.3
  25  *  - Porting over to new fbdev api. (jsimmons)
  26  *
  27  * 0.3.2
  28  *  - got rid of all floating point (dok)
  29  *
  30  * 0.3.1
  31  *  - added module license (dok)
  32  *
  33  * 0.3
  34  *  - hardware accelerated clear and move for 2200 and above (dok)
  35  *  - maximum allowed dotclock is handled now (dok)
  36  *
  37  * 0.2.1
  38  *  - correct panning after X usage (dok)
  39  *  - added module and kernel parameters (dok)
  40  *  - no stretching if external display is enabled (dok)
  41  *
  42  * 0.2
  43  *  - initial version (dok)
  44  *
  45  *
  46  * TODO
  47  * - ioctl for internal/external switching
  48  * - blanking
  49  * - 32bit depth support, maybe impossible
  50  * - disable pan-on-sync, need specs
  51  *
  52  * BUGS
  53  * - white margin on bootup like with tdfxfb (colormap problem?)
  54  *
  55  */
  56
  57 #include <linux/config.h>
  58 #include <linux/module.h>
  59 #include <linux/kernel.h>
  60 #include <linux/errno.h>
  61 #include <linux/string.h>
  62 #include <linux/mm.h>
  63 #include <linux/tty.h>
  64 #include <linux/slab.h>
  65 #include <linux/delay.h>
  66 #include <linux/fb.h>
  67 #include <linux/pci.h>
  68 #include <linux/init.h>
  69 #ifdef CONFIG_TOSHIBA
  70 #include <linux/toshiba.h>
  71 extern int tosh_smm(SMMRegisters *regs);
  72 #endif
  73
  74 #include <asm/io.h>
  75 #include <asm/irq.h>
  76 #include <asm/pgtable.h>
  77 #include <asm/system.h>
  78 #include <asm/uaccess.h>
  79
  80 #ifdef CONFIG_MTRR
  81 #include <asm/mtrr.h>
  82 #endif
  83
  84 #include <video/vga.h>
  85 #include <video/neomagic.h>
  86
  87 #define NEOFB_VERSION "0.4.2"
  88
  89 /* --------------------------------------------------------------------- */
  90
  91 static int internal;
  92 static int external;
  93 static int libretto;
  94 static int nostretch;
  95 static int nopciburst;
  96 static char *mode_option __devinitdata = NULL;
  97
  98 #ifdef MODULE
  99
 100 MODULE_AUTHOR("(c) 2001-2002  Denis Oliver Kropp <dok@convergence.de>");
 101 MODULE_LICENSE("GPL");
 102 MODULE_DESCRIPTION("FBDev driver for NeoMagic PCI Chips");
 103 module_param(internal, bool, 0);
 104 MODULE_PARM_DESC(internal, "Enable output on internal LCD Display.");
 105 module_param(external, bool, 0);
 106 MODULE_PARM_DESC(external, "Enable output on external CRT.");
 107 module_param(libretto, bool, 0);
 108 MODULE_PARM_DESC(libretto, "Force Libretto 100/110 800x480 LCD.");
 109 module_param(nostretch, bool, 0);
 110 MODULE_PARM_DESC(nostretch,
 111                  "Disable stretching of modes smaller than LCD.");
 112 module_param(nopciburst, bool, 0);
 113 MODULE_PARM_DESC(nopciburst, "Disable PCI burst mode.");
 114 module_param(mode_option, charp, 0);
 115 MODULE_PARM_DESC(mode_option, "Preferred video mode ('640x480-8@60', etc)");
 116
 117 #endif
 118
 119
 120 /* --------------------------------------------------------------------- */
 121
 122 static biosMode bios8[] = {
 123         {320, 240, 0x40},
 124         {300, 400, 0x42},
 125         {640, 400, 0x20},
 126         {640, 480, 0x21},
 127         {800, 600, 0x23},
 128         {1024, 768, 0x25},
 129 };
 130
 131 static biosMode bios16[] = {
 132         {320, 200, 0x2e},
 133         {320, 240, 0x41},
 134         {300, 400, 0x43},
 135         {640, 480, 0x31},
 136         {800, 600, 0x34},
 137         {1024, 768, 0x37},
 138 };
 139
 140 static biosMode bios24[] = {
 141         {640, 480, 0x32},
 142         {800, 600, 0x35},
 143         {1024, 768, 0x38}
 144 };
 145
 146 #ifdef NO_32BIT_SUPPORT_YET
 147 /* FIXME: guessed values, wrong */
 148 static biosMode bios32[] = {
 149         {640, 480, 0x33},
 150         {800, 600, 0x36},
 151         {1024, 768, 0x39}
 152 };
 153 #endif
 154
 155 static inline void write_le32(int regindex, u32 val, const struct neofb_par *par)
 156 {
 157         writel(val, par->neo2200 + par->cursorOff + regindex);
 158 }
 159
 160 static int neoFindMode(int xres, int yres, int depth)
 161 {
 162         int xres_s;
 163         int i, size;
 164         biosMode *mode;
 165
 166         switch (depth) {
 167         case 8:
 168                 size = sizeof(bios8) / sizeof(biosMode);
 169                 mode = bios8;
 170                 break;
 171         case 16:
 172                 size = sizeof(bios16) / sizeof(biosMode);
 173                 mode = bios16;
 174                 break;
 175         case 24:
 176                 size = sizeof(bios24) / sizeof(biosMode);
 177                 mode = bios24;
 178                 break;
 179 #ifdef NO_32BIT_SUPPORT_YET
 180         case 32:
 181                 size = sizeof(bios32) / sizeof(biosMode);
 182                 mode = bios32;
 183                 break;
 184 #endif
 185         default:
 186                 return 0;
 187         }
 188
 189         for (i = 0; i < size; i++) {
 190                 if (xres <= mode[i].x_res) {
 191                         xres_s = mode[i].x_res;
 192                         for (; i < size; i++) {
 193                                 if (mode[i].x_res != xres_s)
 194                                         return mode[i - 1].mode;
 195                                 if (yres <= mode[i].y_res)
 196                                         return mode[i].mode;
 197                         }
 198                 }
 199         }
 200         return mode[size - 1].mode;
 201 }
 202
 203 /*
 204  * neoCalcVCLK --
 205  *
 206  * Determine the closest clock frequency to the one requested.
 207  */
 208 #define REF_FREQ 0xe517         /* 14.31818 in 20.12 fixed point */
 209 #define MAX_N 127
 210 #define MAX_D 31
 211 #define MAX_F 1
 212
 213 static void neoCalcVCLK(const struct fb_info *info,
 214                         struct neofb_par *par, long freq)
 215 {
 216         int n, d, f;
 217         int n_best = 0, d_best = 0, f_best = 0;
 218         long f_best_diff = (0x7ffff << 12);     /* 20.12 */
 219         long f_target = (freq << 12) / 1000;    /* 20.12 */
 220
 221         for (f = 0; f <= MAX_F; f++)
 222                 for (n = 0; n <= MAX_N; n++)
 223                         for (d = 0; d <= MAX_D; d++) {
 224                                 long f_out;     /* 20.12 */
 225                                 long f_diff;    /* 20.12 */
 226
 227                                 f_out =
 228                                     ((((n + 1) << 12) / ((d +
 229                                                           1) *
 230                                                          (1 << f))) >> 12)
 231                                     * REF_FREQ;
 232                                 f_diff = abs(f_out - f_target);
 233                                 if (f_diff < f_best_diff) {
 234                                         f_best_diff = f_diff;
 235                                         n_best = n;
 236                                         d_best = d;
 237                                         f_best = f;
 238                                 }
 239                         }
 240
 241         if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
 242             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
 243             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
 244             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
 245                 /* NOT_DONE:  We are trying the full range of the 2200 clock.
 246                    We should be able to try n up to 2047 */
 247                 par->VCLK3NumeratorLow = n_best;
 248                 par->VCLK3NumeratorHigh = (f_best << 7);
 249         } else
 250                 par->VCLK3NumeratorLow = n_best | (f_best << 7);
 251
 252         par->VCLK3Denominator = d_best;
 253
 254 #ifdef NEOFB_DEBUG
 255         printk("neoVCLK: f:%d NumLow=%d NumHi=%d Den=%d Df=%d\n",
 256                f_target >> 12,
 257                par->VCLK3NumeratorLow,
 258                par->VCLK3NumeratorHigh,
 259                par->VCLK3Denominator, f_best_diff >> 12);
 260 #endif
 261 }
 262
 263 /*
 264  * vgaHWInit --
 265  *      Handle the initialization, etc. of a screen.
 266  *      Return FALSE on failure.
 267  */
 268
 269 static int vgaHWInit(const struct fb_var_screeninfo *var,
 270                      const struct fb_info *info,
 271                      struct neofb_par *par, struct xtimings *timings)
 272 {
 273         par->MiscOutReg = 0x23;
 274
 275         if (!(timings->sync & FB_SYNC_HOR_HIGH_ACT))
 276                 par->MiscOutReg |= 0x40;
 277
 278         if (!(timings->sync & FB_SYNC_VERT_HIGH_ACT))
 279                 par->MiscOutReg |= 0x80;
 280
 281         /*
 282          * Time Sequencer
 283          */
 284         par->Sequencer[0] = 0x00;
 285         par->Sequencer[1] = 0x01;
 286         par->Sequencer[2] = 0x0F;
 287         par->Sequencer[3] = 0x00;       /* Font select */
 288         par->Sequencer[4] = 0x0E;       /* Misc */
 289
 290         /*
 291          * CRTC Controller
 292          */
 293         par->CRTC[0] = (timings->HTotal >> 3) - 5;
 294         par->CRTC[1] = (timings->HDisplay >> 3) - 1;
 295         par->CRTC[2] = (timings->HDisplay >> 3) - 1;
 296         par->CRTC[3] = (((timings->HTotal >> 3) - 1) & 0x1F) | 0x80;
 297         par->CRTC[4] = (timings->HSyncStart >> 3);
 298         par->CRTC[5] = ((((timings->HTotal >> 3) - 1) & 0x20) << 2)
 299             | (((timings->HSyncEnd >> 3)) & 0x1F);
 300         par->CRTC[6] = (timings->VTotal - 2) & 0xFF;
 301         par->CRTC[7] = (((timings->VTotal - 2) & 0x100) >> 8)
 302             | (((timings->VDisplay - 1) & 0x100) >> 7)
 303             | ((timings->VSyncStart & 0x100) >> 6)
 304             | (((timings->VDisplay - 1) & 0x100) >> 5)
 305             | 0x10 | (((timings->VTotal - 2) & 0x200) >> 4)
 306             | (((timings->VDisplay - 1) & 0x200) >> 3)
 307             | ((timings->VSyncStart & 0x200) >> 2);
 308         par->CRTC[8] = 0x00;
 309         par->CRTC[9] = (((timings->VDisplay - 1) & 0x200) >> 4) | 0x40;
 310
 311         if (timings->dblscan)
 312                 par->CRTC[9] |= 0x80;
 313
 314         par->CRTC[10] = 0x00;
 315         par->CRTC[11] = 0x00;
 316         par->CRTC[12] = 0x00;
 317         par->CRTC[13] = 0x00;
 318         par->CRTC[14] = 0x00;
 319         par->CRTC[15] = 0x00;
 320         par->CRTC[16] = timings->VSyncStart & 0xFF;
 321         par->CRTC[17] = (timings->VSyncEnd & 0x0F) | 0x20;
 322         par->CRTC[18] = (timings->VDisplay - 1) & 0xFF;
 323         par->CRTC[19] = var->xres_virtual >> 4;
 324         par->CRTC[20] = 0x00;
 325         par->CRTC[21] = (timings->VDisplay - 1) & 0xFF;
 326         par->CRTC[22] = (timings->VTotal - 1) & 0xFF;
 327         par->CRTC[23] = 0xC3;
 328         par->CRTC[24] = 0xFF;
 329
 330         /*
 331          * are these unnecessary?
 332          * vgaHWHBlankKGA(mode, regp, 0, KGA_FIX_OVERSCAN | KGA_ENABLE_ON_ZERO);
 333          * vgaHWVBlankKGA(mode, regp, 0, KGA_FIX_OVERSCAN | KGA_ENABLE_ON_ZERO);
 334          */
 335
 336         /*
 337          * Graphics Display Controller
 338          */
 339         par->Graphics[0] = 0x00;
 340         par->Graphics[1] = 0x00;
 341         par->Graphics[2] = 0x00;
 342         par->Graphics[3] = 0x00;
 343         par->Graphics[4] = 0x00;
 344         par->Graphics[5] = 0x40;
 345         par->Graphics[6] = 0x05;        /* only map 64k VGA memory !!!! */
 346         par->Graphics[7] = 0x0F;
 347         par->Graphics[8] = 0xFF;
 348
 349
 350         par->Attribute[0] = 0x00;       /* standard colormap translation */
 351         par->Attribute[1] = 0x01;
 352         par->Attribute[2] = 0x02;
 353         par->Attribute[3] = 0x03;
 354         par->Attribute[4] = 0x04;
 355         par->Attribute[5] = 0x05;
 356         par->Attribute[6] = 0x06;
 357         par->Attribute[7] = 0x07;
 358         par->Attribute[8] = 0x08;
 359         par->Attribute[9] = 0x09;
 360         par->Attribute[10] = 0x0A;
 361         par->Attribute[11] = 0x0B;
 362         par->Attribute[12] = 0x0C;
 363         par->Attribute[13] = 0x0D;
 364         par->Attribute[14] = 0x0E;
 365         par->Attribute[15] = 0x0F;
 366         par->Attribute[16] = 0x41;
 367         par->Attribute[17] = 0xFF;
 368         par->Attribute[18] = 0x0F;
 369         par->Attribute[19] = 0x00;
 370         par->Attribute[20] = 0x00;
 371         return 0;
 372 }
 373
 374 static void vgaHWLock(struct vgastate *state)
 375 {
 376         /* Protect CRTC[0-7] */
 377         vga_wcrt(state->vgabase, 0x11, vga_rcrt(state->vgabase, 0x11) | 0x80);
 378 }
 379
 380 static void vgaHWUnlock(void)
 381 {
 382         /* Unprotect CRTC[0-7] */
 383         vga_wcrt(NULL, 0x11, vga_rcrt(NULL, 0x11) & ~0x80);
 384 }
 385
 386 static void neoLock(struct vgastate *state)
 387 {
 388         vga_wgfx(state->vgabase, 0x09, 0x00);
 389         vgaHWLock(state);
 390 }
 391
 392 static void neoUnlock(void)
 393 {
 394         vgaHWUnlock();
 395         vga_wgfx(NULL, 0x09, 0x26);
 396 }
 397
 398 /*
 399  * VGA Palette management
 400  */
 401 static int paletteEnabled = 0;
 402
 403 static inline void VGAenablePalette(void)
 404 {
 405         vga_r(NULL, VGA_IS1_RC);
 406         vga_w(NULL, VGA_ATT_W, 0x00);
 407         paletteEnabled = 1;
 408 }
 409
 410 static inline void VGAdisablePalette(void)
 411 {
 412         vga_r(NULL, VGA_IS1_RC);
 413         vga_w(NULL, VGA_ATT_W, 0x20);
 414         paletteEnabled = 0;
 415 }
 416
 417 static inline void VGAwATTR(u8 index, u8 value)
 418 {
 419         if (paletteEnabled)
 420                 index &= ~0x20;
 421         else
 422                 index |= 0x20;
 423
 424         vga_r(NULL, VGA_IS1_RC);
 425         vga_wattr(NULL, index, value);
 426 }
 427
 428 static void vgaHWProtect(int on)
 429 {
 430         unsigned char tmp;
 431
 432         if (on) {
 433                 /*
 434                  * Turn off screen and disable sequencer.
 435                  */
 436                 tmp = vga_rseq(NULL, 0x01);
 437                 vga_wseq(NULL, 0x00, 0x01);             /* Synchronous Reset */
 438                 vga_wseq(NULL, 0x01, tmp | 0x20);       /* disable the display */
 439
 440                 VGAenablePalette();
 441         } else {
 442                 /*
 443                  * Reenable sequencer, then turn on screen.
 444                  */
 445                 tmp = vga_rseq(NULL, 0x01);
 446                 vga_wseq(NULL, 0x01, tmp & ~0x20);      /* reenable display */
 447                 vga_wseq(NULL, 0x00, 0x03);             /* clear synchronousreset */
 448
 449                 VGAdisablePalette();
 450         }
 451 }
 452
 453 static void vgaHWRestore(const struct fb_info *info,
 454                          const struct neofb_par *par)
 455 {
 456         int i;
 457
 458         vga_w(NULL, VGA_MIS_W, par->MiscOutReg);
 459
 460         for (i = 1; i < 5; i++)
 461                 vga_wseq(NULL, i, par->Sequencer[i]);
 462
 463         /* Ensure CRTC registers 0-7 are unlocked by clearing bit 7 or CRTC[17] */
 464         vga_wcrt(NULL, 17, par->CRTC[17] & ~0x80);
 465
 466         for (i = 0; i < 25; i++)
 467                 vga_wcrt(NULL, i, par->CRTC[i]);
 468
 469         for (i = 0; i < 9; i++)
 470                 vga_wgfx(NULL, i, par->Graphics[i]);
 471
 472         VGAenablePalette();
 473
 474         for (i = 0; i < 21; i++)
 475                 VGAwATTR(i, par->Attribute[i]);
 476
 477         VGAdisablePalette();
 478 }
 479
 480
 481 /* -------------------- Hardware specific routines ------------------------- */
 482
 483 /*
 484  * Hardware Acceleration for Neo2200+
 485  */
 486 static inline int neo2200_sync(struct fb_info *info)
 487 {
 488         struct neofb_par *par = (struct neofb_par *) info->par;
 489         int waitcycles;
 490
 491         while (readl(&par->neo2200->bltStat) & 1)
 492                 waitcycles++;
 493         return 0;
 494 }
 495
 496 static inline void neo2200_wait_fifo(struct fb_info *info,
 497                                      int requested_fifo_space)
 498 {
 499         //  ndev->neo.waitfifo_calls++;
 500         //  ndev->neo.waitfifo_sum += requested_fifo_space;
 501
 502         /* FIXME: does not work
 503            if (neo_fifo_space < requested_fifo_space)
 504            {
 505            neo_fifo_waitcycles++;
 506
 507            while (1)
 508            {
 509            neo_fifo_space = (neo2200->bltStat >> 8);
 510            if (neo_fifo_space >= requested_fifo_space)
 511            break;
 512            }
 513            }
 514            else
 515            {
 516            neo_fifo_cache_hits++;
 517            }
 518
 519            neo_fifo_space -= requested_fifo_space;
 520          */
 521
 522         neo2200_sync(info);
 523 }
 524
 525 static inline void neo2200_accel_init(struct fb_info *info,
 526                                       struct fb_var_screeninfo *var)
 527 {
 528         struct neofb_par *par = (struct neofb_par *) info->par;
 529         Neo2200 __iomem *neo2200 = par->neo2200;
 530         u32 bltMod, pitch;
 531
 532         neo2200_sync(info);
 533
 534         switch (var->bits_per_pixel) {
 535         case 8:
 536                 bltMod = NEO_MODE1_DEPTH8;
 537                 pitch = var->xres_virtual;
 538                 break;
 539         case 15:
 540         case 16:
 541                 bltMod = NEO_MODE1_DEPTH16;
 542                 pitch = var->xres_virtual * 2;
 543                 break;
 544         case 24:
 545                 bltMod = NEO_MODE1_DEPTH24;
 546                 pitch = var->xres_virtual * 3;
 547                 break;
 548         default:
 549                 printk(KERN_ERR
 550                        "neofb: neo2200_accel_init: unexpected bits per pixel!\n");
 551                 return;
 552         }
 553
 554         writel(bltMod << 16, &neo2200->bltStat);
 555         writel((pitch << 16) | pitch, &neo2200->pitch);
 556 }
 557
 558 /* --------------------------------------------------------------------- */
 559
 560 static int
 561 neofb_open(struct fb_info *info, int user)
 562 {
 563         struct neofb_par *par = (struct neofb_par *) info->par;
 564         int cnt = atomic_read(&par->ref_count);
 565
 566         if (!cnt) {
 567                 memset(&par->state, 0, sizeof(struct vgastate));
 568                 par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS;
 569                 save_vga(&par->state);
 570         }
 571         atomic_inc(&par->ref_count);
 572         return 0;
 573 }
 574
 575 static int
 576 neofb_release(struct fb_info *info, int user)
 577 {
 578         struct neofb_par *par = (struct neofb_par *) info->par;
 579         int cnt = atomic_read(&par->ref_count);
 580
 581         if (!cnt)
 582                 return -EINVAL;
 583         if (cnt == 1) {
 584                 restore_vga(&par->state);
 585         }
 586         atomic_dec(&par->ref_count);
 587         return 0;
 588 }
 589
 590 static int
 591 neofb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 592 {
 593         struct neofb_par *par = (struct neofb_par *) info->par;
 594         unsigned int pixclock = var->pixclock;
 595         struct xtimings timings;
 596         int memlen, vramlen;
 597         int mode_ok = 0;
 598
 599         DBG("neofb_check_var");
 600
 601         if (!pixclock)
 602                 pixclock = 10000;       /* 10ns = 100MHz */
 603         timings.pixclock = 1000000000 / pixclock;
 604         if (timings.pixclock < 1)
 605                 timings.pixclock = 1;
 606
 607         if (timings.pixclock > par->maxClock)
 608                 return -EINVAL;
 609
 610         timings.dblscan = var->vmode & FB_VMODE_DOUBLE;
 611         timings.interlaced = var->vmode & FB_VMODE_INTERLACED;
 612         timings.HDisplay = var->xres;
 613         timings.HSyncStart = timings.HDisplay + var->right_margin;
 614         timings.HSyncEnd = timings.HSyncStart + var->hsync_len;
 615         timings.HTotal = timings.HSyncEnd + var->left_margin;
 616         timings.VDisplay = var->yres;
 617         timings.VSyncStart = timings.VDisplay + var->lower_margin;
 618         timings.VSyncEnd = timings.VSyncStart + var->vsync_len;
 619         timings.VTotal = timings.VSyncEnd + var->upper_margin;
 620         timings.sync = var->sync;
 621
 622         /* Is the mode larger than the LCD panel? */
 623         if (par->internal_display &&
 624             ((var->xres > par->NeoPanelWidth) ||
 625              (var->yres > par->NeoPanelHeight))) {
 626                 printk(KERN_INFO
 627                        "Mode (%dx%d) larger than the LCD panel (%dx%d)\n",
 628                        var->xres, var->yres, par->NeoPanelWidth,
 629                        par->NeoPanelHeight);
 630                 return -EINVAL;
 631         }
 632
 633         /* Is the mode one of the acceptable sizes? */
 634         if (!par->internal_display)
 635                 mode_ok = 1;
 636         else {
 637                 switch (var->xres) {
 638                 case 1280:
 639                         if (var->yres == 1024)
 640                                 mode_ok = 1;
 641                         break;
 642                 case 1024:
 643                         if (var->yres == 768)
 644                                 mode_ok = 1;
 645                         break;
 646                 case 800:
 647                         if (var->yres == (par->libretto ? 480 : 600))
 648                                 mode_ok = 1;
 649                         break;
 650                 case 640:
 651                         if (var->yres == 480)
 652                                 mode_ok = 1;
 653                         break;
 654                 }
 655         }
 656
 657         if (!mode_ok) {
 658                 printk(KERN_INFO
 659                        "Mode (%dx%d) won't display properly on LCD\n",
 660                        var->xres, var->yres);
 661                 return -EINVAL;
 662         }
 663
 664         var->red.msb_right = 0;
 665         var->green.msb_right = 0;
 666         var->blue.msb_right = 0;
 667
 668         switch (var->bits_per_pixel) {
 669         case 8:         /* PSEUDOCOLOUR, 256 */
 670                 var->transp.offset = 0;
 671                 var->transp.length = 0;
 672                 var->red.offset = 0;
 673                 var->red.length = 8;
 674                 var->green.offset = 0;
 675                 var->green.length = 8;
 676                 var->blue.offset = 0;
 677                 var->blue.length = 8;
 678                 break;
 679
 680         case 16:                /* DIRECTCOLOUR, 64k */
 681                 var->transp.offset = 0;
 682                 var->transp.length = 0;
 683                 var->red.offset = 11;
 684                 var->red.length = 5;
 685                 var->green.offset = 5;
 686                 var->green.length = 6;
 687                 var->blue.offset = 0;
 688                 var->blue.length = 5;
 689                 break;
 690
 691         case 24:                /* TRUECOLOUR, 16m */
 692                 var->transp.offset = 0;
 693                 var->transp.length = 0;
 694                 var->red.offset = 16;
 695                 var->red.length = 8;
 696                 var->green.offset = 8;
 697                 var->green.length = 8;
 698                 var->blue.offset = 0;
 699                 var->blue.length = 8;
 700                 break;
 701
 702 #ifdef NO_32BIT_SUPPORT_YET
 703         case 32:                /* TRUECOLOUR, 16m */
 704                 var->transp.offset = 24;
 705                 var->transp.length = 8;
 706                 var->red.offset = 16;
 707                 var->red.length = 8;
 708                 var->green.offset = 8;
 709                 var->green.length = 8;
 710                 var->blue.offset = 0;
 711                 var->blue.length = 8;
 712                 break;
 713 #endif
 714         default:
 715                 printk(KERN_WARNING "neofb: no support for %dbpp\n",
 716                        var->bits_per_pixel);
 717                 return -EINVAL;
 718         }
 719
 720         vramlen = info->fix.smem_len;
 721         if (vramlen > 4 * 1024 * 1024)
 722                 vramlen = 4 * 1024 * 1024;
 723
 724         if (var->yres_virtual < var->yres)
 725                 var->yres_virtual = var->yres;
 726         if (var->xres_virtual < var->xres)
 727                 var->xres_virtual = var->xres;
 728
 729         memlen = var->xres_virtual * var->bits_per_pixel * var->yres_virtual >> 3;
 730
 731         if (memlen > vramlen) {
 732                 var->yres_virtual =  vramlen * 8 / (var->xres_virtual *
 733                                         var->bits_per_pixel);
 734                 memlen = var->xres_virtual * var->bits_per_pixel *
 735                                 var->yres_virtual / 8;
 736         }
 737
 738         /* we must round yres/xres down, we already rounded y/xres_virtual up
 739            if it was possible. We should return -EINVAL, but I disagree */
 740         if (var->yres_virtual < var->yres)
 741                 var->yres = var->yres_virtual;
 742         if (var->xres_virtual < var->xres)
 743                 var->xres = var->xres_virtual;
 744         if (var->xoffset + var->xres > var->xres_virtual)
 745                 var->xoffset = var->xres_virtual - var->xres;
 746         if (var->yoffset + var->yres > var->yres_virtual)
 747                 var->yoffset = var->yres_virtual - var->yres;
 748
 749         var->nonstd = 0;
 750         var->height = -1;
 751         var->width = -1;
 752
 753         if (var->bits_per_pixel >= 24 || !par->neo2200)
 754                 var->accel_flags &= ~FB_ACCELF_TEXT;
 755         return 0;
 756 }
 757
 758 static int neofb_set_par(struct fb_info *info)
 759 {
 760         struct neofb_par *par = (struct neofb_par *) info->par;
 761         struct xtimings timings;
 762         unsigned char temp;
 763         int i, clock_hi = 0;
 764         int lcd_stretch;
 765         int hoffset, voffset;
 766
 767         DBG("neofb_set_par");
 768
 769         neoUnlock();
 770
 771         vgaHWProtect(1);        /* Blank the screen */
 772
 773         timings.dblscan = info->var.vmode & FB_VMODE_DOUBLE;
 774         timings.interlaced = info->var.vmode & FB_VMODE_INTERLACED;
 775         timings.HDisplay = info->var.xres;
 776         timings.HSyncStart = timings.HDisplay + info->var.right_margin;
 777         timings.HSyncEnd = timings.HSyncStart + info->var.hsync_len;
 778         timings.HTotal = timings.HSyncEnd + info->var.left_margin;
 779         timings.VDisplay = info->var.yres;
 780         timings.VSyncStart = timings.VDisplay + info->var.lower_margin;
 781         timings.VSyncEnd = timings.VSyncStart + info->var.vsync_len;
 782         timings.VTotal = timings.VSyncEnd + info->var.upper_margin;
 783         timings.sync = info->var.sync;
 784         timings.pixclock = PICOS2KHZ(info->var.pixclock);
 785
 786         if (timings.pixclock < 1)
 787                 timings.pixclock = 1;
 788
 789         /*
 790          * This will allocate the datastructure and initialize all of the
 791          * generic VGA registers.
 792          */
 793
 794         if (vgaHWInit(&info->var, info, par, &timings))
 795                 return -EINVAL;
 796
 797         /*
 798          * The default value assigned by vgaHW.c is 0x41, but this does
 799          * not work for NeoMagic.
 800          */
 801         par->Attribute[16] = 0x01;
 802
 803         switch (info->var.bits_per_pixel) {
 804         case 8:
 805                 par->CRTC[0x13] = info->var.xres_virtual >> 3;
 806                 par->ExtCRTOffset = info->var.xres_virtual >> 11;
 807                 par->ExtColorModeSelect = 0x11;
 808                 break;
 809         case 16:
 810                 par->CRTC[0x13] = info->var.xres_virtual >> 2;
 811                 par->ExtCRTOffset = info->var.xres_virtual >> 10;
 812                 par->ExtColorModeSelect = 0x13;
 813                 break;
 814         case 24:
 815                 par->CRTC[0x13] = (info->var.xres_virtual * 3) >> 3;
 816                 par->ExtCRTOffset = (info->var.xres_virtual * 3) >> 11;
 817                 par->ExtColorModeSelect = 0x14;
 818                 break;
 819 #ifdef NO_32BIT_SUPPORT_YET
 820         case 32:                /* FIXME: guessed values */
 821                 par->CRTC[0x13] = info->var.xres_virtual >> 1;
 822                 par->ExtCRTOffset = info->var.xres_virtual >> 9;
 823                 par->ExtColorModeSelect = 0x15;
 824                 break;
 825 #endif
 826         default:
 827                 break;
 828         }
 829
 830         par->ExtCRTDispAddr = 0x10;
 831
 832         /* Vertical Extension */
 833         par->VerticalExt = (((timings.VTotal - 2) & 0x400) >> 10)
 834             | (((timings.VDisplay - 1) & 0x400) >> 9)
 835             | (((timings.VSyncStart) & 0x400) >> 8)
 836             | (((timings.VSyncStart) & 0x400) >> 7);
 837
 838         /* Fast write bursts on unless disabled. */
 839         if (par->pci_burst)
 840                 par->SysIfaceCntl1 = 0x30;
 841         else
 842                 par->SysIfaceCntl1 = 0x00;
 843
 844         par->SysIfaceCntl2 = 0xc0;      /* VESA Bios sets this to 0x80! */
 845
 846         /* Enable any user specified display devices. */
 847         par->PanelDispCntlReg1 = 0x00;
 848         if (par->internal_display)
 849                 par->PanelDispCntlReg1 |= 0x02;
 850         if (par->external_display)
 851                 par->PanelDispCntlReg1 |= 0x01;
 852
 853         /* If the user did not specify any display devices, then... */
 854         if (par->PanelDispCntlReg1 == 0x00) {
 855                 /* Default to internal (i.e., LCD) only. */
 856                 par->PanelDispCntlReg1 |= 0x02;
 857         }
 858
 859         /* If we are using a fixed mode, then tell the chip we are. */
 860         switch (info->var.xres) {
 861         case 1280:
 862                 par->PanelDispCntlReg1 |= 0x60;
 863                 break;
 864         case 1024:
 865                 par->PanelDispCntlReg1 |= 0x40;
 866                 break;
 867         case 800:
 868                 par->PanelDispCntlReg1 |= 0x20;
 869                 break;
 870         case 640:
 871         default:
 872                 break;
 873         }
 874
 875         /* Setup shadow register locking. */
 876         switch (par->PanelDispCntlReg1 & 0x03) {
 877         case 0x01:              /* External CRT only mode: */
 878                 par->GeneralLockReg = 0x00;
 879                 /* We need to program the VCLK for external display only mode. */
 880                 par->ProgramVCLK = 1;
 881                 break;
 882         case 0x02:              /* Internal LCD only mode: */
 883         case 0x03:              /* Simultaneous internal/external (LCD/CRT) mode: */
 884                 par->GeneralLockReg = 0x01;
 885                 /* Don't program the VCLK when using the LCD. */
 886                 par->ProgramVCLK = 0;
 887                 break;
 888         }
 889
 890         /*
 891          * If the screen is to be stretched, turn on stretching for the
 892          * various modes.
 893          *
 894          * OPTION_LCD_STRETCH means stretching should be turned off!
 895          */
 896         par->PanelDispCntlReg2 = 0x00;
 897         par->PanelDispCntlReg3 = 0x00;
 898
 899         if (par->lcd_stretch && (par->PanelDispCntlReg1 == 0x02) &&     /* LCD only */
 900             (info->var.xres != par->NeoPanelWidth)) {
 901                 switch (info->var.xres) {
 902                 case 320:       /* Needs testing.  KEM -- 24 May 98 */
 903                 case 400:       /* Needs testing.  KEM -- 24 May 98 */
 904                 case 640:
 905                 case 800:
 906                 case 1024:
 907                         lcd_stretch = 1;
 908                         par->PanelDispCntlReg2 |= 0xC6;
 909                         break;
 910                 default:
 911                         lcd_stretch = 0;
 912                         /* No stretching in these modes. */
 913                 }
 914         } else
 915                 lcd_stretch = 0;
 916
 917         /*
 918          * If the screen is to be centerd, turn on the centering for the
 919          * various modes.
 920          */
 921         par->PanelVertCenterReg1 = 0x00;
 922         par->PanelVertCenterReg2 = 0x00;
 923         par->PanelVertCenterReg3 = 0x00;
 924         par->PanelVertCenterReg4 = 0x00;
 925         par->PanelVertCenterReg5 = 0x00;
 926         par->PanelHorizCenterReg1 = 0x00;
 927         par->PanelHorizCenterReg2 = 0x00;
 928         par->PanelHorizCenterReg3 = 0x00;
 929         par->PanelHorizCenterReg4 = 0x00;
 930         par->PanelHorizCenterReg5 = 0x00;
 931
 932
 933         if (par->PanelDispCntlReg1 & 0x02) {
 934                 if (info->var.xres == par->NeoPanelWidth) {
 935                         /*
 936                          * No centering required when the requested display width
 937                          * equals the panel width.
 938                          */
 939                 } else {
 940                         par->PanelDispCntlReg2 |= 0x01;
 941                         par->PanelDispCntlReg3 |= 0x10;
 942
 943                         /* Calculate the horizontal and vertical offsets. */
 944                         if (!lcd_stretch) {
 945                                 hoffset =
 946                                     ((par->NeoPanelWidth -
 947                                       info->var.xres) >> 4) - 1;
 948                                 voffset =
 949                                     ((par->NeoPanelHeight -
 950                                       info->var.yres) >> 1) - 2;
 951                         } else {
 952                                 /* Stretched modes cannot be centered. */
 953                                 hoffset = 0;
 954                                 voffset = 0;
 955                         }
 956
 957                         switch (info->var.xres) {
 958                         case 320:       /* Needs testing.  KEM -- 24 May 98 */
 959                                 par->PanelHorizCenterReg3 = hoffset;
 960                                 par->PanelVertCenterReg2 = voffset;
 961                                 break;
 962                         case 400:       /* Needs testing.  KEM -- 24 May 98 */
 963                                 par->PanelHorizCenterReg4 = hoffset;
 964                                 par->PanelVertCenterReg1 = voffset;
 965                                 break;
 966                         case 640:
 967                                 par->PanelHorizCenterReg1 = hoffset;
 968                                 par->PanelVertCenterReg3 = voffset;
 969                                 break;
 970                         case 800:
 971                                 par->PanelHorizCenterReg2 = hoffset;
 972                                 par->PanelVertCenterReg4 = voffset;
 973                                 break;
 974                         case 1024:
 975                                 par->PanelHorizCenterReg5 = hoffset;
 976                                 par->PanelVertCenterReg5 = voffset;
 977                                 break;
 978                         case 1280:
 979                         default:
 980                                 /* No centering in these modes. */
 981                                 break;
 982                         }
 983                 }
 984         }
 985
 986         par->biosMode =
 987             neoFindMode(info->var.xres, info->var.yres,
 988                         info->var.bits_per_pixel);
 989
 990         /*
 991          * Calculate the VCLK that most closely matches the requested dot
 992          * clock.
 993          */
 994         neoCalcVCLK(info, par, timings.pixclock);
 995
 996         /* Since we program the clocks ourselves, always use VCLK3. */
 997         par->MiscOutReg |= 0x0C;
 998
 999         /* alread unlocked above */
1000         /* BOGUS  vga_wgfx(NULL, 0x09, 0x26); */
1001
1002         /* don't know what this is, but it's 0 from bootup anyway */
1003         vga_wgfx(NULL, 0x15, 0x00);
1004
1005         /* was set to 0x01 by my bios in text and vesa modes */
1006         vga_wgfx(NULL, 0x0A, par->GeneralLockReg);
1007
1008         /*
1009          * The color mode needs to be set before calling vgaHWRestore
1010          * to ensure the DAC is initialized properly.
1011          *
1012          * NOTE: Make sure we don't change bits make sure we don't change
1013          * any reserved bits.
1014          */
1015         temp = vga_rgfx(NULL, 0x90);
1016         switch (info->fix.accel) {
1017         case FB_ACCEL_NEOMAGIC_NM2070:
1018                 temp &= 0xF0;   /* Save bits 7:4 */
1019                 temp |= (par->ExtColorModeSelect & ~0xF0);
1020                 break;
1021         case FB_ACCEL_NEOMAGIC_NM2090:
1022         case FB_ACCEL_NEOMAGIC_NM2093:
1023         case FB_ACCEL_NEOMAGIC_NM2097:
1024         case FB_ACCEL_NEOMAGIC_NM2160:
1025         case FB_ACCEL_NEOMAGIC_NM2200:
1026         case FB_ACCEL_NEOMAGIC_NM2230:
1027         case FB_ACCEL_NEOMAGIC_NM2360:
1028         case FB_ACCEL_NEOMAGIC_NM2380:
1029                 temp &= 0x70;   /* Save bits 6:4 */
1030                 temp |= (par->ExtColorModeSelect & ~0x70);
1031                 break;
1032         }
1033
1034         vga_wgfx(NULL, 0x90, temp);
1035
1036         /*
1037          * In some rare cases a lockup might occur if we don't delay
1038          * here. (Reported by Miles Lane)
1039          */
1040         //mdelay(200);
1041
1042         /*
1043          * Disable horizontal and vertical graphics and text expansions so
1044          * that vgaHWRestore works properly.
1045          */
1046         temp = vga_rgfx(NULL, 0x25);
1047         temp &= 0x39;
1048         vga_wgfx(NULL, 0x25, temp);
1049
1050         /*
1051          * Sleep for 200ms to make sure that the two operations above have
1052          * had time to take effect.
1053          */
1054         mdelay(200);
1055
1056         /*
1057          * This function handles restoring the generic VGA registers.  */
1058         vgaHWRestore(info, par);
1059
1060         /* linear colormap for non palettized modes */
1061         switch (info->var.bits_per_pixel) {
1062         case 8:
1063                 /* PseudoColor, 256 */
1064                 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
1065                 break;
1066         case 16:
1067                 /* TrueColor, 64k */
1068                 info->fix.visual = FB_VISUAL_TRUECOLOR;
1069
1070                 for (i = 0; i < 64; i++) {
1071                         outb(i, 0x3c8);
1072
1073                         outb(i << 1, 0x3c9);
1074                         outb(i, 0x3c9);
1075                         outb(i << 1, 0x3c9);
1076                 }
1077                 break;
1078         case 24:
1079 #ifdef NO_32BIT_SUPPORT_YET
1080         case 32:
1081 #endif
1082                 /* TrueColor, 16m */
1083                 info->fix.visual = FB_VISUAL_TRUECOLOR;
1084
1085                 for (i = 0; i < 256; i++) {
1086                         outb(i, 0x3c8);
1087
1088                         outb(i, 0x3c9);
1089                         outb(i, 0x3c9);
1090                         outb(i, 0x3c9);
1091                 }
1092                 break;
1093         }
1094
1095         vga_wgfx(NULL, 0x0E, par->ExtCRTDispAddr);
1096         vga_wgfx(NULL, 0x0F, par->ExtCRTOffset);
1097         temp = vga_rgfx(NULL, 0x10);
1098         temp &= 0x0F;           /* Save bits 3:0 */
1099         temp |= (par->SysIfaceCntl1 & ~0x0F);   /* VESA Bios sets bit 1! */
1100         vga_wgfx(NULL, 0x10, temp);
1101
1102         vga_wgfx(NULL, 0x11, par->SysIfaceCntl2);
1103         vga_wgfx(NULL, 0x15, 0 /*par->SingleAddrPage */ );
1104         vga_wgfx(NULL, 0x16, 0 /*par->DualAddrPage */ );
1105
1106         temp = vga_rgfx(NULL, 0x20);
1107         switch (info->fix.accel) {
1108         case FB_ACCEL_NEOMAGIC_NM2070:
1109                 temp &= 0xFC;   /* Save bits 7:2 */
1110                 temp |= (par->PanelDispCntlReg1 & ~0xFC);
1111                 break;
1112         case FB_ACCEL_NEOMAGIC_NM2090:
1113         case FB_ACCEL_NEOMAGIC_NM2093:
1114         case FB_ACCEL_NEOMAGIC_NM2097:
1115         case FB_ACCEL_NEOMAGIC_NM2160:
1116                 temp &= 0xDC;   /* Save bits 7:6,4:2 */
1117                 temp |= (par->PanelDispCntlReg1 & ~0xDC);
1118                 break;
1119         case FB_ACCEL_NEOMAGIC_NM2200:
1120         case FB_ACCEL_NEOMAGIC_NM2230:
1121         case FB_ACCEL_NEOMAGIC_NM2360:
1122         case FB_ACCEL_NEOMAGIC_NM2380:
1123                 temp &= 0x98;   /* Save bits 7,4:3 */
1124                 temp |= (par->PanelDispCntlReg1 & ~0x98);
1125                 break;
1126         }
1127         vga_wgfx(NULL, 0x20, temp);
1128
1129         temp = vga_rgfx(NULL, 0x25);
1130         temp &= 0x38;           /* Save bits 5:3 */
1131         temp |= (par->PanelDispCntlReg2 & ~0x38);
1132         vga_wgfx(NULL, 0x25, temp);
1133
1134         if (info->fix.accel != FB_ACCEL_NEOMAGIC_NM2070) {
1135                 temp = vga_rgfx(NULL, 0x30);
1136                 temp &= 0xEF;   /* Save bits 7:5 and bits 3:0 */
1137                 temp |= (par->PanelDispCntlReg3 & ~0xEF);
1138                 vga_wgfx(NULL, 0x30, temp);
1139         }
1140
1141         vga_wgfx(NULL, 0x28, par->PanelVertCenterReg1);
1142         vga_wgfx(NULL, 0x29, par->PanelVertCenterReg2);
1143         vga_wgfx(NULL, 0x2a, par->PanelVertCenterReg3);
1144
1145         if (info->fix.accel != FB_ACCEL_NEOMAGIC_NM2070) {
1146                 vga_wgfx(NULL, 0x32, par->PanelVertCenterReg4);
1147                 vga_wgfx(NULL, 0x33, par->PanelHorizCenterReg1);
1148                 vga_wgfx(NULL, 0x34, par->PanelHorizCenterReg2);
1149                 vga_wgfx(NULL, 0x35, par->PanelHorizCenterReg3);
1150         }
1151
1152         if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2160)
1153                 vga_wgfx(NULL, 0x36, par->PanelHorizCenterReg4);
1154
1155         if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
1156             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
1157             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
1158             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
1159                 vga_wgfx(NULL, 0x36, par->PanelHorizCenterReg4);
1160                 vga_wgfx(NULL, 0x37, par->PanelVertCenterReg5);
1161                 vga_wgfx(NULL, 0x38, par->PanelHorizCenterReg5);
1162
1163                 clock_hi = 1;
1164         }
1165
1166         /* Program VCLK3 if needed. */
1167         if (par->ProgramVCLK && ((vga_rgfx(NULL, 0x9B) != par->VCLK3NumeratorLow)
1168                                  || (vga_rgfx(NULL, 0x9F) != par->VCLK3Denominator)
1169                                  || (clock_hi && ((vga_rgfx(NULL, 0x8F) & ~0x0f)
1170                                                   != (par->VCLK3NumeratorHigh &
1171                                                       ~0x0F))))) {
1172                 vga_wgfx(NULL, 0x9B, par->VCLK3NumeratorLow);
1173                 if (clock_hi) {
1174                         temp = vga_rgfx(NULL, 0x8F);
1175                         temp &= 0x0F;   /* Save bits 3:0 */
1176                         temp |= (par->VCLK3NumeratorHigh & ~0x0F);
1177                         vga_wgfx(NULL, 0x8F, temp);
1178                 }
1179                 vga_wgfx(NULL, 0x9F, par->VCLK3Denominator);
1180         }
1181
1182         if (par->biosMode)
1183                 vga_wcrt(NULL, 0x23, par->biosMode);
1184
1185         vga_wgfx(NULL, 0x93, 0xc0);     /* Gives 5x faster framebuffer writes !!! */
1186
1187         /* Program vertical extension register */
1188         if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
1189             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
1190             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
1191             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
1192                 vga_wcrt(NULL, 0x70, par->VerticalExt);
1193         }
1194
1195         vgaHWProtect(0);        /* Turn on screen */
1196
1197         /* Calling this also locks offset registers required in update_start */
1198         neoLock(&par->state);
1199
1200         info->fix.line_length =
1201             info->var.xres_virtual * (info->var.bits_per_pixel >> 3);
1202
1203         switch (info->fix.accel) {
1204                 case FB_ACCEL_NEOMAGIC_NM2200:
1205                 case FB_ACCEL_NEOMAGIC_NM2230:
1206                 case FB_ACCEL_NEOMAGIC_NM2360:
1207                 case FB_ACCEL_NEOMAGIC_NM2380:
1208                         neo2200_accel_init(info, &info->var);
1209                         break;
1210                 default:
1211                         break;
1212         }
1213         return 0;
1214 }
1215
1216 static void neofb_update_start(struct fb_info *info,
1217                                struct fb_var_screeninfo *var)
1218 {
1219         struct neofb_par *par = (struct neofb_par *) info->par;
1220         struct vgastate *state = &par->state;
1221         int oldExtCRTDispAddr;
1222         int Base;
1223
1224         DBG("neofb_update_start");
1225
1226         Base = (var->yoffset * var->xres_virtual + var->xoffset) >> 2;
1227         Base *= (var->bits_per_pixel + 7) / 8;
1228
1229         neoUnlock();
1230
1231         /*
1232          * These are the generic starting address registers.
1233          */
1234         vga_wcrt(state->vgabase, 0x0C, (Base & 0x00FF00) >> 8);
1235         vga_wcrt(state->vgabase, 0x0D, (Base & 0x00FF));
1236
1237         /*
1238          * Make sure we don't clobber some other bits that might already
1239          * have been set. NOTE: NM2200 has a writable bit 3, but it shouldn't
1240          * be needed.
1241          */
1242         oldExtCRTDispAddr = vga_rgfx(NULL, 0x0E);
1243         vga_wgfx(state->vgabase, 0x0E, (((Base >> 16) & 0x0f) | (oldExtCRTDispAddr & 0xf0)));
1244
1245         neoLock(state);
1246 }
1247
1248 /*
1249  *    Pan or Wrap the Display
1250  */
1251 static int neofb_pan_display(struct fb_var_screeninfo *var,
1252                              struct fb_info *info)
1253 {
1254         u_int y_bottom;
1255
1256         y_bottom = var->yoffset;
1257
1258         if (!(var->vmode & FB_VMODE_YWRAP))
1259                 y_bottom += var->yres;
1260
1261         if (var->xoffset > (var->xres_virtual - var->xres))
1262                 return -EINVAL;
1263         if (y_bottom > info->var.yres_virtual)
1264                 return -EINVAL;
1265
1266         neofb_update_start(info, var);
1267
1268         info->var.xoffset = var->xoffset;
1269         info->var.yoffset = var->yoffset;
1270
1271         if (var->vmode & FB_VMODE_YWRAP)
1272                 info->var.vmode |= FB_VMODE_YWRAP;
1273         else
1274                 info->var.vmode &= ~FB_VMODE_YWRAP;
1275         return 0;
1276 }
1277
1278 static int neofb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1279                            u_int transp, struct fb_info *fb)
1280 {
1281         if (regno >= fb->cmap.len || regno > 255)
1282                 return -EINVAL;
1283
1284         switch (fb->var.bits_per_pixel) {
1285         case 8:
1286                 outb(regno, 0x3c8);
1287
1288                 outb(red >> 10, 0x3c9);
1289                 outb(green >> 10, 0x3c9);
1290                 outb(blue >> 10, 0x3c9);
1291                 break;
1292         case 16:
1293                 ((u32 *) fb->pseudo_palette)[regno] =
1294                                 ((red & 0xf800)) | ((green & 0xfc00) >> 5) |
1295                                 ((blue & 0xf800) >> 11);
1296                 break;
1297         case 24:
1298                 ((u32 *) fb->pseudo_palette)[regno] =
1299                                 ((red & 0xff00) << 8) | ((green & 0xff00)) |
1300                                 ((blue & 0xff00) >> 8);
1301                 break;
1302 #ifdef NO_32BIT_SUPPORT_YET
1303         case 32:
1304                 ((u32 *) fb->pseudo_palette)[regno] =
1305                                 ((transp & 0xff00) << 16) | ((red & 0xff00) << 8) |
1306                                 ((green & 0xff00)) | ((blue & 0xff00) >> 8);
1307                 break;
1308 #endif
1309         default:
1310                 return 1;
1311         }
1312         return 0;
1313 }
1314
1315 /*
1316  *    (Un)Blank the display.
1317  */
1318 static int neofb_blank(int blank_mode, struct fb_info *info)
1319 {
1320         /*
1321          *  Blank the screen if blank_mode != 0, else unblank.
1322          *  Return 0 if blanking succeeded, != 0 if un-/blanking failed due to
1323          *  e.g. a video mode which doesn't support it. Implements VESA suspend
1324          *  and powerdown modes for monitors, and backlight control on LCDs.
1325          *    blank_mode == 0: unblanked (backlight on)
1326          *    blank_mode == 1: blank (backlight on)
1327          *    blank_mode == 2: suspend vsync (backlight off)
1328          *    blank_mode == 3: suspend hsync (backlight off)
1329          *    blank_mode == 4: powerdown (backlight off)
1330          *
1331          *  wms...Enable VESA DPMS compatible powerdown mode
1332          *  run "setterm -powersave powerdown" to take advantage
1333          */
1334         struct neofb_par *par = (struct neofb_par *)info->par;
1335         int seqflags, lcdflags, dpmsflags, reg;
1336
1337         switch (blank_mode) {
1338         case FB_BLANK_POWERDOWN:        /* powerdown - both sync lines down */
1339                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1340                 lcdflags = 0;                   /* LCD off */
1341                 dpmsflags = NEO_GR01_SUPPRESS_HSYNC |
1342                             NEO_GR01_SUPPRESS_VSYNC;
1343 #ifdef CONFIG_TOSHIBA
1344                 /* Do we still need this ? */
1345                 /* attempt to turn off backlight on toshiba; also turns off external */
1346                 {
1347                         SMMRegisters regs;
1348
1349                         regs.eax = 0xff00; /* HCI_SET */
1350                         regs.ebx = 0x0002; /* HCI_BACKLIGHT */
1351                         regs.ecx = 0x0000; /* HCI_DISABLE */
1352                         tosh_smm(&regs);
1353                 }
1354 #endif
1355                 break;
1356         case FB_BLANK_HSYNC_SUSPEND:            /* hsync off */
1357                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1358                 lcdflags = 0;                   /* LCD off */
1359                 dpmsflags = NEO_GR01_SUPPRESS_HSYNC;
1360                 break;
1361         case FB_BLANK_VSYNC_SUSPEND:            /* vsync off */
1362                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1363                 lcdflags = 0;                   /* LCD off */
1364                 dpmsflags = NEO_GR01_SUPPRESS_VSYNC;
1365                 break;
1366         case FB_BLANK_NORMAL:           /* just blank screen (backlight stays on) */
1367                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1368                 lcdflags = par->PanelDispCntlReg1 & 0x02; /* LCD normal */
1369                 dpmsflags = 0;                  /* no hsync/vsync suppression */
1370                 break;
1371         case FB_BLANK_UNBLANK:          /* unblank */
1372                 seqflags = 0;                   /* Enable sequencer */
1373                 lcdflags = par->PanelDispCntlReg1 & 0x02; /* LCD normal */
1374                 dpmsflags = 0x00;       /* no hsync/vsync suppression */
1375 #ifdef CONFIG_TOSHIBA
1376                 /* Do we still need this ? */
1377                 /* attempt to re-enable backlight/external on toshiba */
1378                 {
1379                         SMMRegisters regs;
1380
1381                         regs.eax = 0xff00; /* HCI_SET */
1382                         regs.ebx = 0x0002; /* HCI_BACKLIGHT */
1383                         regs.ecx = 0x0001; /* HCI_ENABLE */
1384                         tosh_smm(&regs);
1385                 }
1386 #endif
1387                 break;
1388         default:        /* Anything else we don't understand; return 1 to tell
1389                          * fb_blank we didn't aactually do anything */
1390                 return 1;
1391         }
1392
1393         neoUnlock();
1394         reg = (vga_rseq(NULL, 0x01) & ~0x20) | seqflags;
1395         vga_wseq(NULL, 0x01, reg);
1396         reg = (vga_rgfx(NULL, 0x20) & ~0x02) | lcdflags;
1397         vga_wgfx(NULL, 0x20, reg);
1398         reg = (vga_rgfx(NULL, 0x01) & ~0xF0) | 0x80 | dpmsflags;
1399         vga_wgfx(NULL, 0x01, reg);
1400         neoLock(&par->state);
1401         return 0;
1402 }
1403
1404 static void
1405 neo2200_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
1406 {
1407         struct neofb_par *par = (struct neofb_par *) info->par;
1408         u_long dst, rop;
1409
1410         dst = rect->dx + rect->dy * info->var.xres_virtual;
1411         rop = rect->rop ? 0x060000 : 0x0c0000;
1412
1413         neo2200_wait_fifo(info, 4);
1414
1415         /* set blt control */
1416         writel(NEO_BC3_FIFO_EN |
1417                NEO_BC0_SRC_IS_FG | NEO_BC3_SKIP_MAPPING |
1418                //               NEO_BC3_DST_XY_ADDR  |
1419                //               NEO_BC3_SRC_XY_ADDR  |
1420                rop, &par->neo2200->bltCntl);
1421
1422         switch (info->var.bits_per_pixel) {
1423         case 8:
1424                 writel(rect->color, &par->neo2200->fgColor);
1425                 break;
1426         case 16:
1427         case 24:
1428                 writel(((u32 *) (info->pseudo_palette))[rect->color],
1429                        &par->neo2200->fgColor);
1430                 break;
1431         }
1432
1433         writel(dst * ((info->var.bits_per_pixel + 7) >> 3),
1434                &par->neo2200->dstStart);
1435         writel((rect->height << 16) | (rect->width & 0xffff),
1436                &par->neo2200->xyExt);
1437 }
1438
1439 static void
1440 neo2200_copyarea(struct fb_info *info, const struct fb_copyarea *area)
1441 {
1442         u32 sx = area->sx, sy = area->sy, dx = area->dx, dy = area->dy;
1443         struct neofb_par *par = (struct neofb_par *) info->par;
1444         u_long src, dst, bltCntl;
1445
1446         bltCntl = NEO_BC3_FIFO_EN | NEO_BC3_SKIP_MAPPING | 0x0C0000;
1447
1448         if ((dy > sy) || ((dy == sy) && (dx > sx))) {
1449                 /* Start with the lower right corner */
1450                 sy += (area->height - 1);
1451                 dy += (area->height - 1);
1452                 sx += (area->width - 1);
1453                 dx += (area->width - 1);
1454
1455                 bltCntl |= NEO_BC0_X_DEC | NEO_BC0_DST_Y_DEC | NEO_BC0_SRC_Y_DEC;
1456         }
1457
1458         src = sx * (info->var.bits_per_pixel >> 3) + sy*info->fix.line_length;
1459         dst = dx * (info->var.bits_per_pixel >> 3) + dy*info->fix.line_length;
1460
1461         neo2200_wait_fifo(info, 4);
1462
1463         /* set blt control */
1464         writel(bltCntl, &par->neo2200->bltCntl);
1465
1466         writel(src, &par->neo2200->srcStart);
1467         writel(dst, &par->neo2200->dstStart);
1468         writel((area->height << 16) | (area->width & 0xffff),
1469                &par->neo2200->xyExt);
1470 }
1471
1472 static void
1473 neo2200_imageblit(struct fb_info *info, const struct fb_image *image)
1474 {
1475         struct neofb_par *par = (struct neofb_par *) info->par;
1476         int s_pitch = (image->width * image->depth + 7) >> 3;
1477         int scan_align = info->pixmap.scan_align - 1;
1478         int buf_align = info->pixmap.buf_align - 1;
1479         int bltCntl_flags, d_pitch, data_len;
1480
1481         // The data is padded for the hardware
1482         d_pitch = (s_pitch + scan_align) & ~scan_align;
1483         data_len = ((d_pitch * image->height) + buf_align) & ~buf_align;
1484
1485         neo2200_sync(info);
1486
1487         if (image->depth == 1) {
1488                 if (info->var.bits_per_pixel == 24 && image->width < 16) {
1489                         /* FIXME. There is a bug with accelerated color-expanded
1490                          * transfers in 24 bit mode if the image being transferred
1491                          * is less than 16 bits wide. This is due to insufficient
1492                          * padding when writing the image. We need to adjust
1493                          * struct fb_pixmap. Not yet done. */
1494                         return cfb_imageblit(info, image);
1495                 }
1496                 bltCntl_flags = NEO_BC0_SRC_MONO;
1497         } else if (image->depth == info->var.bits_per_pixel) {
1498                 bltCntl_flags = 0;
1499         } else {
1500                 /* We don't currently support hardware acceleration if image
1501                  * depth is different from display */
1502                 return cfb_imageblit(info, image);
1503         }
1504
1505         switch (info->var.bits_per_pixel) {
1506         case 8:
1507                 writel(image->fg_color, &par->neo2200->fgColor);
1508                 writel(image->bg_color, &par->neo2200->bgColor);
1509                 break;
1510         case 16:
1511         case 24:
1512                 writel(((u32 *) (info->pseudo_palette))[image->fg_color],
1513                        &par->neo2200->fgColor);
1514                 writel(((u32 *) (info->pseudo_palette))[image->bg_color],
1515                        &par->neo2200->bgColor);
1516                 break;
1517         }
1518
1519         writel(NEO_BC0_SYS_TO_VID |
1520                 NEO_BC3_SKIP_MAPPING | bltCntl_flags |
1521                 // NEO_BC3_DST_XY_ADDR |
1522                 0x0c0000, &par->neo2200->bltCntl);
1523
1524         writel(0, &par->neo2200->srcStart);
1525 //      par->neo2200->dstStart = (image->dy << 16) | (image->dx & 0xffff);
1526         writel(((image->dx & 0xffff) * (info->var.bits_per_pixel >> 3) +
1527                 image->dy * info->fix.line_length), &par->neo2200->dstStart);
1528         writel((image->height << 16) | (image->width & 0xffff),
1529                &par->neo2200->xyExt);
1530
1531         memcpy_toio(par->mmio_vbase + 0x100000, image->data, data_len);
1532 }
1533
1534 static void
1535 neofb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
1536 {
1537         switch (info->fix.accel) {
1538                 case FB_ACCEL_NEOMAGIC_NM2200:
1539                 case FB_ACCEL_NEOMAGIC_NM2230:
1540                 case FB_ACCEL_NEOMAGIC_NM2360:
1541                 case FB_ACCEL_NEOMAGIC_NM2380:
1542                         neo2200_fillrect(info, rect);
1543                         break;
1544                 default:
1545                         cfb_fillrect(info, rect);
1546                         break;
1547         }
1548 }
1549
1550 static void
1551 neofb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
1552 {
1553         switch (info->fix.accel) {
1554                 case FB_ACCEL_NEOMAGIC_NM2200:
1555                 case FB_ACCEL_NEOMAGIC_NM2230:
1556                 case FB_ACCEL_NEOMAGIC_NM2360:
1557                 case FB_ACCEL_NEOMAGIC_NM2380:
1558                         neo2200_copyarea(info, area);
1559                         break;
1560                 default:
1561                         cfb_copyarea(info, area);
1562                         break;
1563         }
1564 }
1565
1566 static void
1567 neofb_imageblit(struct fb_info *info, const struct fb_image *image)
1568 {
1569         switch (info->fix.accel) {
1570                 case FB_ACCEL_NEOMAGIC_NM2200:
1571                 case FB_ACCEL_NEOMAGIC_NM2230:
1572                 case FB_ACCEL_NEOMAGIC_NM2360:
1573                 case FB_ACCEL_NEOMAGIC_NM2380:
1574                         neo2200_imageblit(info, image);
1575                         break;
1576                 default:
1577                         cfb_imageblit(info, image);
1578                         break;
1579         }
1580 }
1581
1582 static int
1583 neofb_sync(struct fb_info *info)
1584 {
1585         switch (info->fix.accel) {
1586                 case FB_ACCEL_NEOMAGIC_NM2200:
1587                 case FB_ACCEL_NEOMAGIC_NM2230:
1588                 case FB_ACCEL_NEOMAGIC_NM2360:
1589                 case FB_ACCEL_NEOMAGIC_NM2380:
1590                         neo2200_sync(info);
1591                         break;
1592                 default:
1593                         break;
1594         }
1595         return 0;
1596 }
1597
1598 /*
1599 static void
1600 neofb_draw_cursor(struct fb_info *info, u8 *dst, u8 *src, unsigned int width)
1601 {
1602         //memset_io(info->sprite.addr, 0xff, 1);
1603 }
1604
1605 static int
1606 neofb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1607 {
1608         struct neofb_par *par = (struct neofb_par *) info->par;
1609
1610         * Disable cursor *
1611         write_le32(NEOREG_CURSCNTL, ~NEO_CURS_ENABLE, par);
1612
1613         if (cursor->set & FB_CUR_SETPOS) {
1614                 u32 x = cursor->image.dx;
1615                 u32 y = cursor->image.dy;
1616
1617                 info->cursor.image.dx = x;
1618                 info->cursor.image.dy = y;
1619                 write_le32(NEOREG_CURSX, x, par);
1620                 write_le32(NEOREG_CURSY, y, par);
1621         }
1622
1623         if (cursor->set & FB_CUR_SETSIZE) {
1624                 info->cursor.image.height = cursor->image.height;
1625                 info->cursor.image.width = cursor->image.width;
1626         }
1627
1628         if (cursor->set & FB_CUR_SETHOT)
1629                 info->cursor.hot = cursor->hot;
1630
1631         if (cursor->set & FB_CUR_SETCMAP) {
1632                 if (cursor->image.depth == 1) {
1633                         u32 fg = cursor->image.fg_color;
1634                         u32 bg = cursor->image.bg_color;
1635
1636                         info->cursor.image.fg_color = fg;
1637                         info->cursor.image.bg_color = bg;
1638
1639                         fg = ((fg & 0xff0000) >> 16) | ((fg & 0xff) << 16) | (fg & 0xff00);
1640                         bg = ((bg & 0xff0000) >> 16) | ((bg & 0xff) << 16) | (bg & 0xff00);
1641                         write_le32(NEOREG_CURSFGCOLOR, fg, par);
1642                         write_le32(NEOREG_CURSBGCOLOR, bg, par);
1643                 }
1644         }
1645
1646         if (cursor->set & FB_CUR_SETSHAPE)
1647                 fb_load_cursor_image(info);
1648
1649         if (info->cursor.enable)
1650                 write_le32(NEOREG_CURSCNTL, NEO_CURS_ENABLE, par);
1651         return 0;
1652 }
1653 */
1654
1655 static struct fb_ops neofb_ops = {
1656         .owner          = THIS_MODULE,
1657         .fb_open        = neofb_open,
1658         .fb_release     = neofb_release,
1659         .fb_check_var   = neofb_check_var,
1660         .fb_set_par     = neofb_set_par,
1661         .fb_setcolreg   = neofb_setcolreg,
1662         .fb_pan_display = neofb_pan_display,
1663         .fb_blank       = neofb_blank,
1664         .fb_sync        = neofb_sync,
1665         .fb_fillrect    = neofb_fillrect,
1666         .fb_copyarea    = neofb_copyarea,
1667         .fb_imageblit   = neofb_imageblit,
1668 };
1669
1670 /* --------------------------------------------------------------------- */
1671
1672 static struct fb_videomode __devinitdata mode800x480 = {
1673         .xres           = 800,
1674         .yres           = 480,
1675         .pixclock       = 25000,
1676         .left_margin    = 88,
1677         .right_margin   = 40,
1678         .upper_margin   = 23,
1679         .lower_margin   = 1,
1680         .hsync_len      = 128,
1681         .vsync_len      = 4,
1682         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
1683         .vmode          = FB_VMODE_NONINTERLACED
1684 };
1685
1686 static int __devinit neo_map_mmio(struct fb_info *info,
1687                                   struct pci_dev *dev)
1688 {
1689         struct neofb_par *par = (struct neofb_par *) info->par;
1690
1691         DBG("neo_map_mmio");
1692
1693         switch (info->fix.accel) {
1694                 case FB_ACCEL_NEOMAGIC_NM2070:
1695                         info->fix.mmio_start = pci_resource_start(dev, 0)+
1696                                 0x100000;
1697                         break;
1698                 case FB_ACCEL_NEOMAGIC_NM2090:
1699                 case FB_ACCEL_NEOMAGIC_NM2093:
1700                         info->fix.mmio_start = pci_resource_start(dev, 0)+
1701                                 0x200000;
1702                         break;
1703                 case FB_ACCEL_NEOMAGIC_NM2160:
1704                 case FB_ACCEL_NEOMAGIC_NM2097:
1705                 case FB_ACCEL_NEOMAGIC_NM2200:
1706                 case FB_ACCEL_NEOMAGIC_NM2230:
1707                 case FB_ACCEL_NEOMAGIC_NM2360:
1708                 case FB_ACCEL_NEOMAGIC_NM2380:
1709                         info->fix.mmio_start = pci_resource_start(dev, 1);
1710                         break;
1711                 default:
1712                         info->fix.mmio_start = pci_resource_start(dev, 0);
1713         }
1714         info->fix.mmio_len = MMIO_SIZE;
1715
1716         if (!request_mem_region
1717             (info->fix.mmio_start, MMIO_SIZE, "memory mapped I/O")) {
1718                 printk("neofb: memory mapped IO in use\n");
1719                 return -EBUSY;
1720         }
1721
1722         par->mmio_vbase = ioremap(info->fix.mmio_start, MMIO_SIZE);
1723         if (!par->mmio_vbase) {
1724                 printk("neofb: unable to map memory mapped IO\n");
1725                 release_mem_region(info->fix.mmio_start,
1726                                    info->fix.mmio_len);
1727                 return -ENOMEM;
1728         } else
1729                 printk(KERN_INFO "neofb: mapped io at %p\n",
1730                        par->mmio_vbase);
1731         return 0;
1732 }
1733
1734 static void neo_unmap_mmio(struct fb_info *info)
1735 {
1736         struct neofb_par *par = (struct neofb_par *) info->par;
1737
1738         DBG("neo_unmap_mmio");
1739
1740         iounmap(par->mmio_vbase);
1741         par->mmio_vbase = NULL;
1742
1743         release_mem_region(info->fix.mmio_start,
1744                            info->fix.mmio_len);
1745 }
1746
1747 static int __devinit neo_map_video(struct fb_info *info,
1748                                    struct pci_dev *dev, int video_len)
1749 {
1750         //unsigned long addr;
1751
1752         DBG("neo_map_video");
1753
1754         info->fix.smem_start = pci_resource_start(dev, 0);
1755         info->fix.smem_len = video_len;
1756
1757         if (!request_mem_region(info->fix.smem_start, info->fix.smem_len,
1758                                 "frame buffer")) {
1759                 printk("neofb: frame buffer in use\n");
1760                 return -EBUSY;
1761         }
1762
1763         info->screen_base =
1764             ioremap(info->fix.smem_start, info->fix.smem_len);
1765         if (!info->screen_base) {
1766                 printk("neofb: unable to map screen memory\n");
1767                 release_mem_region(info->fix.smem_start,
1768                                    info->fix.smem_len);
1769                 return -ENOMEM;
1770         } else
1771                 printk(KERN_INFO "neofb: mapped framebuffer at %p\n",
1772                        info->screen_base);
1773
1774 #ifdef CONFIG_MTRR
1775         ((struct neofb_par *)(info->par))->mtrr =
1776                 mtrr_add(info->fix.smem_start, pci_resource_len(dev, 0),
1777                                 MTRR_TYPE_WRCOMB, 1);
1778 #endif
1779
1780         /* Clear framebuffer, it's all white in memory after boot */
1781         memset_io(info->screen_base, 0, info->fix.smem_len);
1782
1783         /* Allocate Cursor drawing pad.
1784         info->fix.smem_len -= PAGE_SIZE;
1785         addr = info->fix.smem_start + info->fix.smem_len;
1786         write_le32(NEOREG_CURSMEMPOS, ((0x000f & (addr >> 10)) << 8) |
1787                                         ((0x0ff0 & (addr >> 10)) >> 4), par);
1788         addr = (unsigned long) info->screen_base + info->fix.smem_len;
1789         info->sprite.addr = (u8 *) addr; */
1790         return 0;
1791 }
1792
1793 static void neo_unmap_video(struct fb_info *info)
1794 {
1795         DBG("neo_unmap_video");
1796
1797 #ifdef CONFIG_MTRR
1798         {
1799                 struct neofb_par *par = (struct neofb_par *) info->par;
1800
1801                 mtrr_del(par->mtrr, info->fix.smem_start,
1802                          info->fix.smem_len);
1803         }
1804 #endif
1805         iounmap(info->screen_base);
1806         info->screen_base = NULL;
1807
1808         release_mem_region(info->fix.smem_start,
1809                            info->fix.smem_len);
1810 }
1811
1812 static int __devinit neo_scan_monitor(struct fb_info *info)
1813 {
1814         struct neofb_par *par = (struct neofb_par *) info->par;
1815         unsigned char type, display;
1816         int w;
1817
1818         // Eventually we will have i2c support.
1819         info->monspecs.modedb = kmalloc(sizeof(struct fb_videomode), GFP_KERNEL);
1820         if (!info->monspecs.modedb)
1821                 return -ENOMEM;
1822         info->monspecs.modedb_len = 1;
1823
1824         /* Determine the panel type */
1825         vga_wgfx(NULL, 0x09, 0x26);
1826         type = vga_rgfx(NULL, 0x21);
1827         display = vga_rgfx(NULL, 0x20);
1828         if (!par->internal_display && !par->external_display) {
1829                 par->internal_display = display & 2 || !(display & 3) ? 1 : 0;
1830                 par->external_display = display & 1;
1831                 printk (KERN_INFO "Autodetected %s display\n",
1832                         par->internal_display && par->external_display ? "simultaneous" :
1833                         par->internal_display ? "internal" : "external");
1834         }
1835
1836         /* Determine panel width -- used in NeoValidMode. */
1837         w = vga_rgfx(NULL, 0x20);
1838         vga_wgfx(NULL, 0x09, 0x00);
1839         switch ((w & 0x18) >> 3) {
1840         case 0x00:
1841                 // 640x480@60
1842                 par->NeoPanelWidth = 640;
1843                 par->NeoPanelHeight = 480;
1844                 memcpy(info->monspecs.modedb, &vesa_modes[3], sizeof(struct fb_videomode));
1845                 break;
1846         case 0x01:
1847                 par->NeoPanelWidth = 800;
1848                 if (par->libretto) {
1849                         par->NeoPanelHeight = 480;
1850                         memcpy(info->monspecs.modedb, &mode800x480, sizeof(struct fb_videomode));
1851                 } else {
1852                         // 800x600@60
1853                         par->NeoPanelHeight = 600;
1854                         memcpy(info->monspecs.modedb, &vesa_modes[8], sizeof(struct fb_videomode));
1855                 }
1856                 break;
1857         case 0x02:
1858                 // 1024x768@60
1859                 par->NeoPanelWidth = 1024;
1860                 par->NeoPanelHeight = 768;
1861                 memcpy(info->monspecs.modedb, &vesa_modes[13], sizeof(struct fb_videomode));
1862                 break;
1863         case 0x03:
1864                 /* 1280x1024@60 panel support needs to be added */
1865 #ifdef NOT_DONE
1866                 par->NeoPanelWidth = 1280;
1867                 par->NeoPanelHeight = 1024;
1868                 memcpy(info->monspecs.modedb, &vesa_modes[20], sizeof(struct fb_videomode));
1869                 break;
1870 #else
1871                 printk(KERN_ERR
1872                        "neofb: Only 640x480, 800x600/480 and 1024x768 panels are currently supported\n");
1873                 return -1;
1874 #endif
1875         default:
1876                 // 640x480@60
1877                 par->NeoPanelWidth = 640;
1878                 par->NeoPanelHeight = 480;
1879                 memcpy(info->monspecs.modedb, &vesa_modes[3], sizeof(struct fb_videomode));
1880                 break;
1881         }
1882
1883         printk(KERN_INFO "Panel is a %dx%d %s %s display\n",
1884                par->NeoPanelWidth,
1885                par->NeoPanelHeight,
1886                (type & 0x02) ? "color" : "monochrome",
1887                (type & 0x10) ? "TFT" : "dual scan");
1888         return 0;
1889 }
1890
1891 static int __devinit neo_init_hw(struct fb_info *info)
1892 {
1893         struct neofb_par *par = (struct neofb_par *) info->par;
1894         int videoRam = 896;
1895         int maxClock = 65000;
1896         int CursorMem = 1024;
1897         int CursorOff = 0x100;
1898         int linearSize = 1024;
1899         int maxWidth = 1024;
1900         int maxHeight = 1024;
1901
1902         DBG("neo_init_hw");
1903
1904         neoUnlock();
1905
1906 #if 0
1907         printk(KERN_DEBUG "--- Neo extended register dump ---\n");
1908         for (int w = 0; w < 0x85; w++)
1909                 printk(KERN_DEBUG "CR %p: %p\n", (void *) w,
1910                        (void *) vga_rcrt(NULL, w);
1911         for (int w = 0; w < 0xC7; w++)
1912                 printk(KERN_DEBUG "GR %p: %p\n", (void *) w,
1913                        (void *) vga_rgfx(NULL, w));
1914 #endif
1915         switch (info->fix.accel) {
1916         case FB_ACCEL_NEOMAGIC_NM2070:
1917                 videoRam = 896;
1918                 maxClock = 65000;
1919                 CursorMem = 2048;
1920                 CursorOff = 0x100;
1921                 linearSize = 1024;
1922                 maxWidth = 1024;
1923                 maxHeight = 1024;
1924                 break;
1925         case FB_ACCEL_NEOMAGIC_NM2090:
1926         case FB_ACCEL_NEOMAGIC_NM2093:
1927                 videoRam = 1152;
1928                 maxClock = 80000;
1929                 CursorMem = 2048;
1930                 CursorOff = 0x100;
1931                 linearSize = 2048;
1932                 maxWidth = 1024;
1933                 maxHeight = 1024;
1934                 break;
1935         case FB_ACCEL_NEOMAGIC_NM2097:
1936                 videoRam = 1152;
1937                 maxClock = 80000;
1938                 CursorMem = 1024;
1939                 CursorOff = 0x100;
1940                 linearSize = 2048;
1941                 maxWidth = 1024;
1942                 maxHeight = 1024;
1943                 break;
1944         case FB_ACCEL_NEOMAGIC_NM2160:
1945                 videoRam = 2048;
1946                 maxClock = 90000;
1947                 CursorMem = 1024;
1948                 CursorOff = 0x100;
1949                 linearSize = 2048;
1950                 maxWidth = 1024;
1951                 maxHeight = 1024;
1952                 break;
1953         case FB_ACCEL_NEOMAGIC_NM2200:
1954                 videoRam = 2560;
1955                 maxClock = 110000;
1956                 CursorMem = 1024;
1957                 CursorOff = 0x1000;
1958                 linearSize = 4096;
1959                 maxWidth = 1280;
1960                 maxHeight = 1024;       /* ???? */
1961
1962                 par->neo2200 = (Neo2200 __iomem *) par->mmio_vbase;
1963                 break;
1964         case FB_ACCEL_NEOMAGIC_NM2230:
1965                 videoRam = 3008;
1966                 maxClock = 110000;
1967                 CursorMem = 1024;
1968                 CursorOff = 0x1000;
1969                 linearSize = 4096;
1970                 maxWidth = 1280;
1971                 maxHeight = 1024;       /* ???? */
1972
1973                 par->neo2200 = (Neo2200 __iomem *) par->mmio_vbase;
1974                 break;
1975         case FB_ACCEL_NEOMAGIC_NM2360:
1976                 videoRam = 4096;
1977                 maxClock = 110000;
1978                 CursorMem = 1024;
1979                 CursorOff = 0x1000;
1980                 linearSize = 4096;
1981                 maxWidth = 1280;
1982                 maxHeight = 1024;       /* ???? */
1983
1984                 par->neo2200 = (Neo2200 __iomem *) par->mmio_vbase;
1985                 break;
1986         case FB_ACCEL_NEOMAGIC_NM2380:
1987                 videoRam = 6144;
1988                 maxClock = 110000;
1989                 CursorMem = 1024;
1990                 CursorOff = 0x1000;
1991                 linearSize = 8192;
1992                 maxWidth = 1280;
1993                 maxHeight = 1024;       /* ???? */
1994
1995                 par->neo2200 = (Neo2200 __iomem *) par->mmio_vbase;
1996                 break;
1997         }
1998 /*
1999         info->sprite.size = CursorMem;
2000         info->sprite.scan_align = 1;
2001         info->sprite.buf_align = 1;
2002         info->sprite.flags = FB_PIXMAP_IO;
2003         info->sprite.outbuf = neofb_draw_cursor;
2004 */
2005         par->maxClock = maxClock;
2006         par->cursorOff = CursorOff;
2007         return ((videoRam * 1024));
2008 }
2009
2010
2011 static struct fb_info *__devinit neo_alloc_fb_info(struct pci_dev *dev, const struct
2012                                                    pci_device_id *id)
2013 {
2014         struct fb_info *info;
2015         struct neofb_par *par;
2016
2017         info = framebuffer_alloc(sizeof(struct neofb_par) + sizeof(u32) * 256, &dev->dev);
2018
2019         if (!info)
2020                 return NULL;
2021
2022         par = info->par;
2023
2024         info->fix.accel = id->driver_data;
2025
2026         par->pci_burst = !nopciburst;
2027         par->lcd_stretch = !nostretch;
2028         par->libretto = libretto;
2029
2030         par->internal_display = internal;
2031         par->external_display = external;
2032         info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
2033
2034         switch (info->fix.accel) {
2035         case FB_ACCEL_NEOMAGIC_NM2070:
2036                 sprintf(info->fix.id, "MagicGraph 128");
2037                 break;
2038         case FB_ACCEL_NEOMAGIC_NM2090:
2039                 sprintf(info->fix.id, "MagicGraph 128V");
2040                 break;
2041         case FB_ACCEL_NEOMAGIC_NM2093:
2042                 sprintf(info->fix.id, "MagicGraph 128ZV");
2043                 break;
2044         case FB_ACCEL_NEOMAGIC_NM2097:
2045                 sprintf(info->fix.id, "MagicGraph 128ZV+");
2046                 break;
2047         case FB_ACCEL_NEOMAGIC_NM2160:
2048                 sprintf(info->fix.id, "MagicGraph 128XD");
2049                 break;
2050         case FB_ACCEL_NEOMAGIC_NM2200:
2051                 sprintf(info->fix.id, "MagicGraph 256AV");
2052                 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2053                                FBINFO_HWACCEL_COPYAREA |
2054                                FBINFO_HWACCEL_FILLRECT;
2055                 break;
2056         case FB_ACCEL_NEOMAGIC_NM2230:
2057                 sprintf(info->fix.id, "MagicGraph 256AV+");
2058                 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2059                                FBINFO_HWACCEL_COPYAREA |
2060                                FBINFO_HWACCEL_FILLRECT;
2061                 break;
2062         case FB_ACCEL_NEOMAGIC_NM2360:
2063                 sprintf(info->fix.id, "MagicGraph 256ZX");
2064                 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2065                                FBINFO_HWACCEL_COPYAREA |
2066                                FBINFO_HWACCEL_FILLRECT;
2067                 break;
2068         case FB_ACCEL_NEOMAGIC_NM2380:
2069                 sprintf(info->fix.id, "MagicGraph 256XL+");
2070                 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2071                                FBINFO_HWACCEL_COPYAREA |
2072                                FBINFO_HWACCEL_FILLRECT;
2073                 break;
2074         }
2075
2076         info->fix.type = FB_TYPE_PACKED_PIXELS;
2077         info->fix.type_aux = 0;
2078         info->fix.xpanstep = 0;
2079         info->fix.ypanstep = 4;
2080         info->fix.ywrapstep = 0;
2081         info->fix.accel = id->driver_data;
2082
2083         info->fbops = &neofb_ops;
2084         info->pseudo_palette = (void *) (par + 1);
2085         return info;
2086 }
2087
2088 static void neo_free_fb_info(struct fb_info *info)
2089 {
2090         if (info) {
2091                 /*
2092                  * Free the colourmap
2093                  */
2094                 fb_dealloc_cmap(&info->cmap);
2095                 framebuffer_release(info);
2096         }
2097 }
2098
2099 /* --------------------------------------------------------------------- */
2100
2101 static int __devinit neofb_probe(struct pci_dev *dev,
2102                                  const struct pci_device_id *id)
2103 {
2104         struct fb_info *info;
2105         u_int h_sync, v_sync;
2106         int video_len, err;
2107
2108         DBG("neofb_probe");
2109
2110         err = pci_enable_device(dev);
2111         if (err)
2112                 return err;
2113
2114         err = -ENOMEM;
2115         info = neo_alloc_fb_info(dev, id);
2116         if (!info)
2117                 return err;
2118
2119         err = neo_map_mmio(info, dev);
2120         if (err)
2121                 goto err_map_mmio;
2122
2123         err = neo_scan_monitor(info);
2124         if (err)
2125                 goto err_scan_monitor;
2126
2127         video_len = neo_init_hw(info);
2128         if (video_len < 0) {
2129                 err = video_len;
2130                 goto err_init_hw;
2131         }
2132
2133         err = neo_map_video(info, dev, video_len);
2134         if (err)
2135                 goto err_init_hw;
2136
2137         if (!fb_find_mode(&info->var, info, mode_option, NULL, 0,
2138                         info->monspecs.modedb, 16)) {
2139                 printk(KERN_ERR "neofb: Unable to find usable video mode.\n");
2140                 goto err_map_video;
2141         }
2142
2143         /*
2144          * Calculate the hsync and vsync frequencies.  Note that
2145          * we split the 1e12 constant up so that we can preserve
2146          * the precision and fit the results into 32-bit registers.
2147          *  (1953125000 * 512 = 1e12)
2148          */
2149         h_sync = 1953125000 / info->var.pixclock;
2150         h_sync =
2151             h_sync * 512 / (info->var.xres + info->var.left_margin +
2152                             info->var.right_margin + info->var.hsync_len);
2153         v_sync =
2154             h_sync / (info->var.yres + info->var.upper_margin +
2155                       info->var.lower_margin + info->var.vsync_len);
2156
2157         printk(KERN_INFO "neofb v" NEOFB_VERSION
2158                ": %dkB VRAM, using %dx%d, %d.%03dkHz, %dHz\n",
2159                info->fix.smem_len >> 10, info->var.xres,
2160                info->var.yres, h_sync / 1000, h_sync % 1000, v_sync);
2161
2162         if (fb_alloc_cmap(&info->cmap, 256, 0) < 0)
2163                 goto err_map_video;
2164
2165         err = register_framebuffer(info);
2166         if (err < 0)
2167                 goto err_reg_fb;
2168
2169         printk(KERN_INFO "fb%d: %s frame buffer device\n",
2170                info->node, info->fix.id);
2171
2172         /*
2173          * Our driver data
2174          */
2175         pci_set_drvdata(dev, info);
2176         return 0;
2177
2178 err_reg_fb:
2179         fb_dealloc_cmap(&info->cmap);
2180 err_map_video:
2181         neo_unmap_video(info);
2182 err_init_hw:
2183         fb_destroy_modedb(info->monspecs.modedb);
2184 err_scan_monitor:
2185         neo_unmap_mmio(info);
2186 err_map_mmio:
2187         neo_free_fb_info(info);
2188         return err;
2189 }
2190
2191 static void __devexit neofb_remove(struct pci_dev *dev)
2192 {
2193         struct fb_info *info = pci_get_drvdata(dev);
2194
2195         DBG("neofb_remove");
2196
2197         if (info) {
2198                 /*
2199                  * If unregister_framebuffer fails, then
2200                  * we will be leaving hooks that could cause
2201                  * oopsen laying around.
2202                  */
2203                 if (unregister_framebuffer(info))
2204                         printk(KERN_WARNING
2205                                "neofb: danger danger!  Oopsen imminent!\n");
2206
2207                 neo_unmap_video(info);
2208                 fb_destroy_modedb(info->monspecs.modedb);
2209                 neo_unmap_mmio(info);
2210                 neo_free_fb_info(info);
2211
2212                 /*
2213                  * Ensure that the driver data is no longer
2214                  * valid.
2215                  */
2216                 pci_set_drvdata(dev, NULL);
2217         }
2218 }
2219
2220 static struct pci_device_id neofb_devices[] = {
2221         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2070,
2222          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2070},
2223
2224         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2090,
2225          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2090},
2226
2227         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2093,
2228          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2093},
2229
2230         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2097,
2231          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2097},
2232
2233         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2160,
2234          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2160},
2235
2236         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2200,
2237          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2200},
2238
2239         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2230,
2240          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2230},
2241
2242         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2360,
2243          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2360},
2244
2245         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2380,
2246          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2380},
2247
2248         {0, 0, 0, 0, 0, 0, 0}
2249 };
2250
2251 MODULE_DEVICE_TABLE(pci, neofb_devices);
2252
2253 static struct pci_driver neofb_driver = {
2254         .name =         "neofb",
2255         .id_table =     neofb_devices,
2256         .probe =        neofb_probe,
2257         .remove =       __devexit_p(neofb_remove)
2258 };
2259
2260 /* ************************* init in-kernel code ************************** */
2261
2262 #ifndef MODULE
2263 static int __init neofb_setup(char *options)
2264 {
2265         char *this_opt;
2266
2267         DBG("neofb_setup");
2268
2269         if (!options || !*options)
2270                 return 0;
2271
2272         while ((this_opt = strsep(&options, ",")) != NULL) {
2273                 if (!*this_opt)
2274                         continue;
2275
2276                 if (!strncmp(this_opt, "internal", 8))
2277                         internal = 1;
2278                 else if (!strncmp(this_opt, "external", 8))
2279                         external = 1;
2280                 else if (!strncmp(this_opt, "nostretch", 9))
2281                         nostretch = 1;
2282                 else if (!strncmp(this_opt, "nopciburst", 10))
2283                         nopciburst = 1;
2284                 else if (!strncmp(this_opt, "libretto", 8))
2285                         libretto = 1;
2286                 else
2287                         mode_option = this_opt;
2288         }
2289         return 0;
2290 }
2291 #endif  /*  MODULE  */
2292
2293 static int __init neofb_init(void)
2294 {
2295 #ifndef MODULE
2296         char *option = NULL;
2297
2298         if (fb_get_options("neofb", &option))
2299                 return -ENODEV;
2300         neofb_setup(option);
2301 #endif
2302         return pci_register_driver(&neofb_driver);
2303 }
2304
2305 module_init(neofb_init);
2306
2307 #ifdef MODULE
2308 static void __exit neofb_exit(void)
2309 {
2310         pci_unregister_driver(&neofb_driver);
2311 }
2312
2313 module_exit(neofb_exit);
2314 #endif                          /* MODULE */