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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/module.h>
  58 #include <linux/kernel.h>
  59 #include <linux/errno.h>
  60 #include <linux/string.h>
  61 #include <linux/mm.h>
  62 #include <linux/slab.h>
  63 #include <linux/delay.h>
  64 #include <linux/fb.h>
  65 #include <linux/pci.h>
  66 #include <linux/init.h>
  67 #ifdef CONFIG_TOSHIBA
  68 #include <linux/toshiba.h>
  69 #endif
  70
  71 #include <asm/io.h>
  72 #include <asm/irq.h>
  73 #include <asm/pgtable.h>
  74 #include <asm/system.h>
  75 #include <asm/uaccess.h>
  76
  77 #ifdef CONFIG_MTRR
  78 #include <asm/mtrr.h>
  79 #endif
  80
  81 #include <video/vga.h>
  82 #include <video/neomagic.h>
  83
  84 #define NEOFB_VERSION "0.4.2"
  85
  86 /* --------------------------------------------------------------------- */
  87
  88 static int internal;
  89 static int external;
  90 static int libretto;
  91 static int nostretch;
  92 static int nopciburst;
  93 static char *mode_option __devinitdata = NULL;
  94
  95 #ifdef MODULE
  96
  97 MODULE_AUTHOR("(c) 2001-2002  Denis Oliver Kropp <dok@convergence.de>");
  98 MODULE_LICENSE("GPL");
  99 MODULE_DESCRIPTION("FBDev driver for NeoMagic PCI Chips");
 100 module_param(internal, bool, 0);
 101 MODULE_PARM_DESC(internal, "Enable output on internal LCD Display.");
 102 module_param(external, bool, 0);
 103 MODULE_PARM_DESC(external, "Enable output on external CRT.");
 104 module_param(libretto, bool, 0);
 105 MODULE_PARM_DESC(libretto, "Force Libretto 100/110 800x480 LCD.");
 106 module_param(nostretch, bool, 0);
 107 MODULE_PARM_DESC(nostretch,
 108                  "Disable stretching of modes smaller than LCD.");
 109 module_param(nopciburst, bool, 0);
 110 MODULE_PARM_DESC(nopciburst, "Disable PCI burst mode.");
 111 module_param(mode_option, charp, 0);
 112 MODULE_PARM_DESC(mode_option, "Preferred video mode ('640x480-8@60', etc)");
 113
 114 #endif
 115
 116
 117 /* --------------------------------------------------------------------- */
 118
 119 static biosMode bios8[] = {
 120         {320, 240, 0x40},
 121         {300, 400, 0x42},
 122         {640, 400, 0x20},
 123         {640, 480, 0x21},
 124         {800, 600, 0x23},
 125         {1024, 768, 0x25},
 126 };
 127
 128 static biosMode bios16[] = {
 129         {320, 200, 0x2e},
 130         {320, 240, 0x41},
 131         {300, 400, 0x43},
 132         {640, 480, 0x31},
 133         {800, 600, 0x34},
 134         {1024, 768, 0x37},
 135 };
 136
 137 static biosMode bios24[] = {
 138         {640, 480, 0x32},
 139         {800, 600, 0x35},
 140         {1024, 768, 0x38}
 141 };
 142
 143 #ifdef NO_32BIT_SUPPORT_YET
 144 /* FIXME: guessed values, wrong */
 145 static biosMode bios32[] = {
 146         {640, 480, 0x33},
 147         {800, 600, 0x36},
 148         {1024, 768, 0x39}
 149 };
 150 #endif
 151
 152 static inline void write_le32(int regindex, u32 val, const struct neofb_par *par)
 153 {
 154         writel(val, par->neo2200 + par->cursorOff + regindex);
 155 }
 156
 157 static int neoFindMode(int xres, int yres, int depth)
 158 {
 159         int xres_s;
 160         int i, size;
 161         biosMode *mode;
 162
 163         switch (depth) {
 164         case 8:
 165                 size = ARRAY_SIZE(bios8);
 166                 mode = bios8;
 167                 break;
 168         case 16:
 169                 size = ARRAY_SIZE(bios16);
 170                 mode = bios16;
 171                 break;
 172         case 24:
 173                 size = ARRAY_SIZE(bios24);
 174                 mode = bios24;
 175                 break;
 176 #ifdef NO_32BIT_SUPPORT_YET
 177         case 32:
 178                 size = ARRAY_SIZE(bios32);
 179                 mode = bios32;
 180                 break;
 181 #endif
 182         default:
 183                 return 0;
 184         }
 185
 186         for (i = 0; i < size; i++) {
 187                 if (xres <= mode[i].x_res) {
 188                         xres_s = mode[i].x_res;
 189                         for (; i < size; i++) {
 190                                 if (mode[i].x_res != xres_s)
 191                                         return mode[i - 1].mode;
 192                                 if (yres <= mode[i].y_res)
 193                                         return mode[i].mode;
 194                         }
 195                 }
 196         }
 197         return mode[size - 1].mode;
 198 }
 199
 200 /*
 201  * neoCalcVCLK --
 202  *
 203  * Determine the closest clock frequency to the one requested.
 204  */
 205 #define REF_FREQ 0xe517         /* 14.31818 in 20.12 fixed point */
 206 #define MAX_N 127
 207 #define MAX_D 31
 208 #define MAX_F 1
 209
 210 static void neoCalcVCLK(const struct fb_info *info,
 211                         struct neofb_par *par, long freq)
 212 {
 213         int n, d, f;
 214         int n_best = 0, d_best = 0, f_best = 0;
 215         long f_best_diff = (0x7ffff << 12);     /* 20.12 */
 216         long f_target = (freq << 12) / 1000;    /* 20.12 */
 217
 218         for (f = 0; f <= MAX_F; f++)
 219                 for (n = 0; n <= MAX_N; n++)
 220                         for (d = 0; d <= MAX_D; d++) {
 221                                 long f_out;     /* 20.12 */
 222                                 long f_diff;    /* 20.12 */
 223
 224                                 f_out =
 225                                     ((((n + 1) << 12) / ((d +
 226                                                           1) *
 227                                                          (1 << f))) >> 12)
 228                                     * REF_FREQ;
 229                                 f_diff = abs(f_out - f_target);
 230                                 if (f_diff < f_best_diff) {
 231                                         f_best_diff = f_diff;
 232                                         n_best = n;
 233                                         d_best = d;
 234                                         f_best = f;
 235                                 }
 236                         }
 237
 238         if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
 239             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
 240             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
 241             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
 242                 /* NOT_DONE:  We are trying the full range of the 2200 clock.
 243                    We should be able to try n up to 2047 */
 244                 par->VCLK3NumeratorLow = n_best;
 245                 par->VCLK3NumeratorHigh = (f_best << 7);
 246         } else
 247                 par->VCLK3NumeratorLow = n_best | (f_best << 7);
 248
 249         par->VCLK3Denominator = d_best;
 250
 251 #ifdef NEOFB_DEBUG
 252         printk("neoVCLK: f:%d NumLow=%d NumHi=%d Den=%d Df=%d\n",
 253                f_target >> 12,
 254                par->VCLK3NumeratorLow,
 255                par->VCLK3NumeratorHigh,
 256                par->VCLK3Denominator, f_best_diff >> 12);
 257 #endif
 258 }
 259
 260 /*
 261  * vgaHWInit --
 262  *      Handle the initialization, etc. of a screen.
 263  *      Return FALSE on failure.
 264  */
 265
 266 static int vgaHWInit(const struct fb_var_screeninfo *var,
 267                      const struct fb_info *info,
 268                      struct neofb_par *par, struct xtimings *timings)
 269 {
 270         par->MiscOutReg = 0x23;
 271
 272         if (!(timings->sync & FB_SYNC_HOR_HIGH_ACT))
 273                 par->MiscOutReg |= 0x40;
 274
 275         if (!(timings->sync & FB_SYNC_VERT_HIGH_ACT))
 276                 par->MiscOutReg |= 0x80;
 277
 278         /*
 279          * Time Sequencer
 280          */
 281         par->Sequencer[0] = 0x00;
 282         par->Sequencer[1] = 0x01;
 283         par->Sequencer[2] = 0x0F;
 284         par->Sequencer[3] = 0x00;       /* Font select */
 285         par->Sequencer[4] = 0x0E;       /* Misc */
 286
 287         /*
 288          * CRTC Controller
 289          */
 290         par->CRTC[0] = (timings->HTotal >> 3) - 5;
 291         par->CRTC[1] = (timings->HDisplay >> 3) - 1;
 292         par->CRTC[2] = (timings->HDisplay >> 3) - 1;
 293         par->CRTC[3] = (((timings->HTotal >> 3) - 1) & 0x1F) | 0x80;
 294         par->CRTC[4] = (timings->HSyncStart >> 3);
 295         par->CRTC[5] = ((((timings->HTotal >> 3) - 1) & 0x20) << 2)
 296             | (((timings->HSyncEnd >> 3)) & 0x1F);
 297         par->CRTC[6] = (timings->VTotal - 2) & 0xFF;
 298         par->CRTC[7] = (((timings->VTotal - 2) & 0x100) >> 8)
 299             | (((timings->VDisplay - 1) & 0x100) >> 7)
 300             | ((timings->VSyncStart & 0x100) >> 6)
 301             | (((timings->VDisplay - 1) & 0x100) >> 5)
 302             | 0x10 | (((timings->VTotal - 2) & 0x200) >> 4)
 303             | (((timings->VDisplay - 1) & 0x200) >> 3)
 304             | ((timings->VSyncStart & 0x200) >> 2);
 305         par->CRTC[8] = 0x00;
 306         par->CRTC[9] = (((timings->VDisplay - 1) & 0x200) >> 4) | 0x40;
 307
 308         if (timings->dblscan)
 309                 par->CRTC[9] |= 0x80;
 310
 311         par->CRTC[10] = 0x00;
 312         par->CRTC[11] = 0x00;
 313         par->CRTC[12] = 0x00;
 314         par->CRTC[13] = 0x00;
 315         par->CRTC[14] = 0x00;
 316         par->CRTC[15] = 0x00;
 317         par->CRTC[16] = timings->VSyncStart & 0xFF;
 318         par->CRTC[17] = (timings->VSyncEnd & 0x0F) | 0x20;
 319         par->CRTC[18] = (timings->VDisplay - 1) & 0xFF;
 320         par->CRTC[19] = var->xres_virtual >> 4;
 321         par->CRTC[20] = 0x00;
 322         par->CRTC[21] = (timings->VDisplay - 1) & 0xFF;
 323         par->CRTC[22] = (timings->VTotal - 1) & 0xFF;
 324         par->CRTC[23] = 0xC3;
 325         par->CRTC[24] = 0xFF;
 326
 327         /*
 328          * are these unnecessary?
 329          * vgaHWHBlankKGA(mode, regp, 0, KGA_FIX_OVERSCAN | KGA_ENABLE_ON_ZERO);
 330          * vgaHWVBlankKGA(mode, regp, 0, KGA_FIX_OVERSCAN | KGA_ENABLE_ON_ZERO);
 331          */
 332
 333         /*
 334          * Graphics Display Controller
 335          */
 336         par->Graphics[0] = 0x00;
 337         par->Graphics[1] = 0x00;
 338         par->Graphics[2] = 0x00;
 339         par->Graphics[3] = 0x00;
 340         par->Graphics[4] = 0x00;
 341         par->Graphics[5] = 0x40;
 342         par->Graphics[6] = 0x05;        /* only map 64k VGA memory !!!! */
 343         par->Graphics[7] = 0x0F;
 344         par->Graphics[8] = 0xFF;
 345
 346
 347         par->Attribute[0] = 0x00;       /* standard colormap translation */
 348         par->Attribute[1] = 0x01;
 349         par->Attribute[2] = 0x02;
 350         par->Attribute[3] = 0x03;
 351         par->Attribute[4] = 0x04;
 352         par->Attribute[5] = 0x05;
 353         par->Attribute[6] = 0x06;
 354         par->Attribute[7] = 0x07;
 355         par->Attribute[8] = 0x08;
 356         par->Attribute[9] = 0x09;
 357         par->Attribute[10] = 0x0A;
 358         par->Attribute[11] = 0x0B;
 359         par->Attribute[12] = 0x0C;
 360         par->Attribute[13] = 0x0D;
 361         par->Attribute[14] = 0x0E;
 362         par->Attribute[15] = 0x0F;
 363         par->Attribute[16] = 0x41;
 364         par->Attribute[17] = 0xFF;
 365         par->Attribute[18] = 0x0F;
 366         par->Attribute[19] = 0x00;
 367         par->Attribute[20] = 0x00;
 368         return 0;
 369 }
 370
 371 static void vgaHWLock(struct vgastate *state)
 372 {
 373         /* Protect CRTC[0-7] */
 374         vga_wcrt(state->vgabase, 0x11, vga_rcrt(state->vgabase, 0x11) | 0x80);
 375 }
 376
 377 static void vgaHWUnlock(void)
 378 {
 379         /* Unprotect CRTC[0-7] */
 380         vga_wcrt(NULL, 0x11, vga_rcrt(NULL, 0x11) & ~0x80);
 381 }
 382
 383 static void neoLock(struct vgastate *state)
 384 {
 385         vga_wgfx(state->vgabase, 0x09, 0x00);
 386         vgaHWLock(state);
 387 }
 388
 389 static void neoUnlock(void)
 390 {
 391         vgaHWUnlock();
 392         vga_wgfx(NULL, 0x09, 0x26);
 393 }
 394
 395 /*
 396  * VGA Palette management
 397  */
 398 static int paletteEnabled = 0;
 399
 400 static inline void VGAenablePalette(void)
 401 {
 402         vga_r(NULL, VGA_IS1_RC);
 403         vga_w(NULL, VGA_ATT_W, 0x00);
 404         paletteEnabled = 1;
 405 }
 406
 407 static inline void VGAdisablePalette(void)
 408 {
 409         vga_r(NULL, VGA_IS1_RC);
 410         vga_w(NULL, VGA_ATT_W, 0x20);
 411         paletteEnabled = 0;
 412 }
 413
 414 static inline void VGAwATTR(u8 index, u8 value)
 415 {
 416         if (paletteEnabled)
 417                 index &= ~0x20;
 418         else
 419                 index |= 0x20;
 420
 421         vga_r(NULL, VGA_IS1_RC);
 422         vga_wattr(NULL, index, value);
 423 }
 424
 425 static void vgaHWProtect(int on)
 426 {
 427         unsigned char tmp;
 428
 429         if (on) {
 430                 /*
 431                  * Turn off screen and disable sequencer.
 432                  */
 433                 tmp = vga_rseq(NULL, 0x01);
 434                 vga_wseq(NULL, 0x00, 0x01);             /* Synchronous Reset */
 435                 vga_wseq(NULL, 0x01, tmp | 0x20);       /* disable the display */
 436
 437                 VGAenablePalette();
 438         } else {
 439                 /*
 440                  * Reenable sequencer, then turn on screen.
 441                  */
 442                 tmp = vga_rseq(NULL, 0x01);
 443                 vga_wseq(NULL, 0x01, tmp & ~0x20);      /* reenable display */
 444                 vga_wseq(NULL, 0x00, 0x03);             /* clear synchronousreset */
 445
 446                 VGAdisablePalette();
 447         }
 448 }
 449
 450 static void vgaHWRestore(const struct fb_info *info,
 451                          const struct neofb_par *par)
 452 {
 453         int i;
 454
 455         vga_w(NULL, VGA_MIS_W, par->MiscOutReg);
 456
 457         for (i = 1; i < 5; i++)
 458                 vga_wseq(NULL, i, par->Sequencer[i]);
 459
 460         /* Ensure CRTC registers 0-7 are unlocked by clearing bit 7 or CRTC[17] */
 461         vga_wcrt(NULL, 17, par->CRTC[17] & ~0x80);
 462
 463         for (i = 0; i < 25; i++)
 464                 vga_wcrt(NULL, i, par->CRTC[i]);
 465
 466         for (i = 0; i < 9; i++)
 467                 vga_wgfx(NULL, i, par->Graphics[i]);
 468
 469         VGAenablePalette();
 470
 471         for (i = 0; i < 21; i++)
 472                 VGAwATTR(i, par->Attribute[i]);
 473
 474         VGAdisablePalette();
 475 }
 476
 477
 478 /* -------------------- Hardware specific routines ------------------------- */
 479
 480 /*
 481  * Hardware Acceleration for Neo2200+
 482  */
 483 static inline int neo2200_sync(struct fb_info *info)
 484 {
 485         struct neofb_par *par = info->par;
 486
 487         while (readl(&par->neo2200->bltStat) & 1);
 488         return 0;
 489 }
 490
 491 static inline void neo2200_wait_fifo(struct fb_info *info,
 492                                      int requested_fifo_space)
 493 {
 494         //  ndev->neo.waitfifo_calls++;
 495         //  ndev->neo.waitfifo_sum += requested_fifo_space;
 496
 497         /* FIXME: does not work
 498            if (neo_fifo_space < requested_fifo_space)
 499            {
 500            neo_fifo_waitcycles++;
 501
 502            while (1)
 503            {
 504            neo_fifo_space = (neo2200->bltStat >> 8);
 505            if (neo_fifo_space >= requested_fifo_space)
 506            break;
 507            }
 508            }
 509            else
 510            {
 511            neo_fifo_cache_hits++;
 512            }
 513
 514            neo_fifo_space -= requested_fifo_space;
 515          */
 516
 517         neo2200_sync(info);
 518 }
 519
 520 static inline void neo2200_accel_init(struct fb_info *info,
 521                                       struct fb_var_screeninfo *var)
 522 {
 523         struct neofb_par *par = info->par;
 524         Neo2200 __iomem *neo2200 = par->neo2200;
 525         u32 bltMod, pitch;
 526
 527         neo2200_sync(info);
 528
 529         switch (var->bits_per_pixel) {
 530         case 8:
 531                 bltMod = NEO_MODE1_DEPTH8;
 532                 pitch = var->xres_virtual;
 533                 break;
 534         case 15:
 535         case 16:
 536                 bltMod = NEO_MODE1_DEPTH16;
 537                 pitch = var->xres_virtual * 2;
 538                 break;
 539         case 24:
 540                 bltMod = NEO_MODE1_DEPTH24;
 541                 pitch = var->xres_virtual * 3;
 542                 break;
 543         default:
 544                 printk(KERN_ERR
 545                        "neofb: neo2200_accel_init: unexpected bits per pixel!\n");
 546                 return;
 547         }
 548
 549         writel(bltMod << 16, &neo2200->bltStat);
 550         writel((pitch << 16) | pitch, &neo2200->pitch);
 551 }
 552
 553 /* --------------------------------------------------------------------- */
 554
 555 static int
 556 neofb_open(struct fb_info *info, int user)
 557 {
 558         struct neofb_par *par = info->par;
 559
 560         mutex_lock(&par->open_lock);
 561         if (!par->ref_count) {
 562                 memset(&par->state, 0, sizeof(struct vgastate));
 563                 par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS;
 564                 save_vga(&par->state);
 565         }
 566         par->ref_count++;
 567         mutex_unlock(&par->open_lock);
 568
 569         return 0;
 570 }
 571
 572 static int
 573 neofb_release(struct fb_info *info, int user)
 574 {
 575         struct neofb_par *par = info->par;
 576
 577         mutex_lock(&par->open_lock);
 578         if (!par->ref_count) {
 579                 mutex_unlock(&par->open_lock);
 580                 return -EINVAL;
 581         }
 582         if (par->ref_count == 1) {
 583                 restore_vga(&par->state);
 584         }
 585         par->ref_count--;
 586         mutex_unlock(&par->open_lock);
 587
 588         return 0;
 589 }
 590
 591 static int
 592 neofb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 593 {
 594         struct neofb_par *par = info->par;
 595         unsigned int pixclock = var->pixclock;
 596         struct xtimings timings;
 597         int memlen, vramlen;
 598         int mode_ok = 0;
 599
 600         DBG("neofb_check_var");
 601
 602         if (!pixclock)
 603                 pixclock = 10000;       /* 10ns = 100MHz */
 604         timings.pixclock = 1000000000 / pixclock;
 605         if (timings.pixclock < 1)
 606                 timings.pixclock = 1;
 607
 608         if (timings.pixclock > par->maxClock)
 609                 return -EINVAL;
 610
 611         timings.dblscan = var->vmode & FB_VMODE_DOUBLE;
 612         timings.interlaced = var->vmode & FB_VMODE_INTERLACED;
 613         timings.HDisplay = var->xres;
 614         timings.HSyncStart = timings.HDisplay + var->right_margin;
 615         timings.HSyncEnd = timings.HSyncStart + var->hsync_len;
 616         timings.HTotal = timings.HSyncEnd + var->left_margin;
 617         timings.VDisplay = var->yres;
 618         timings.VSyncStart = timings.VDisplay + var->lower_margin;
 619         timings.VSyncEnd = timings.VSyncStart + var->vsync_len;
 620         timings.VTotal = timings.VSyncEnd + var->upper_margin;
 621         timings.sync = var->sync;
 622
 623         /* Is the mode larger than the LCD panel? */
 624         if (par->internal_display &&
 625             ((var->xres > par->NeoPanelWidth) ||
 626              (var->yres > par->NeoPanelHeight))) {
 627                 printk(KERN_INFO
 628                        "Mode (%dx%d) larger than the LCD panel (%dx%d)\n",
 629                        var->xres, var->yres, par->NeoPanelWidth,
 630                        par->NeoPanelHeight);
 631                 return -EINVAL;
 632         }
 633
 634         /* Is the mode one of the acceptable sizes? */
 635         if (!par->internal_display)
 636                 mode_ok = 1;
 637         else {
 638                 switch (var->xres) {
 639                 case 1280:
 640                         if (var->yres == 1024)
 641                                 mode_ok = 1;
 642                         break;
 643                 case 1024:
 644                         if (var->yres == 768)
 645                                 mode_ok = 1;
 646                         break;
 647                 case 800:
 648                         if (var->yres == (par->libretto ? 480 : 600))
 649                                 mode_ok = 1;
 650                         break;
 651                 case 640:
 652                         if (var->yres == 480)
 653                                 mode_ok = 1;
 654                         break;
 655                 }
 656         }
 657
 658         if (!mode_ok) {
 659                 printk(KERN_INFO
 660                        "Mode (%dx%d) won't display properly on LCD\n",
 661                        var->xres, var->yres);
 662                 return -EINVAL;
 663         }
 664
 665         var->red.msb_right = 0;
 666         var->green.msb_right = 0;
 667         var->blue.msb_right = 0;
 668
 669         switch (var->bits_per_pixel) {
 670         case 8:         /* PSEUDOCOLOUR, 256 */
 671                 var->transp.offset = 0;
 672                 var->transp.length = 0;
 673                 var->red.offset = 0;
 674                 var->red.length = 8;
 675                 var->green.offset = 0;
 676                 var->green.length = 8;
 677                 var->blue.offset = 0;
 678                 var->blue.length = 8;
 679                 break;
 680
 681         case 16:                /* DIRECTCOLOUR, 64k */
 682                 var->transp.offset = 0;
 683                 var->transp.length = 0;
 684                 var->red.offset = 11;
 685                 var->red.length = 5;
 686                 var->green.offset = 5;
 687                 var->green.length = 6;
 688                 var->blue.offset = 0;
 689                 var->blue.length = 5;
 690                 break;
 691
 692         case 24:                /* TRUECOLOUR, 16m */
 693                 var->transp.offset = 0;
 694                 var->transp.length = 0;
 695                 var->red.offset = 16;
 696                 var->red.length = 8;
 697                 var->green.offset = 8;
 698                 var->green.length = 8;
 699                 var->blue.offset = 0;
 700                 var->blue.length = 8;
 701                 break;
 702
 703 #ifdef NO_32BIT_SUPPORT_YET
 704         case 32:                /* TRUECOLOUR, 16m */
 705                 var->transp.offset = 24;
 706                 var->transp.length = 8;
 707                 var->red.offset = 16;
 708                 var->red.length = 8;
 709                 var->green.offset = 8;
 710                 var->green.length = 8;
 711                 var->blue.offset = 0;
 712                 var->blue.length = 8;
 713                 break;
 714 #endif
 715         default:
 716                 printk(KERN_WARNING "neofb: no support for %dbpp\n",
 717                        var->bits_per_pixel);
 718                 return -EINVAL;
 719         }
 720
 721         vramlen = info->fix.smem_len;
 722         if (vramlen > 4 * 1024 * 1024)
 723                 vramlen = 4 * 1024 * 1024;
 724
 725         if (var->yres_virtual < var->yres)
 726                 var->yres_virtual = var->yres;
 727         if (var->xres_virtual < var->xres)
 728                 var->xres_virtual = var->xres;
 729
 730         memlen = var->xres_virtual * var->bits_per_pixel * var->yres_virtual >> 3;
 731
 732         if (memlen > vramlen) {
 733                 var->yres_virtual =  vramlen * 8 / (var->xres_virtual *
 734                                         var->bits_per_pixel);
 735                 memlen = var->xres_virtual * var->bits_per_pixel *
 736                                 var->yres_virtual / 8;
 737         }
 738
 739         /* we must round yres/xres down, we already rounded y/xres_virtual up
 740            if it was possible. We should return -EINVAL, but I disagree */
 741         if (var->yres_virtual < var->yres)
 742                 var->yres = var->yres_virtual;
 743         if (var->xres_virtual < var->xres)
 744                 var->xres = var->xres_virtual;
 745         if (var->xoffset + var->xres > var->xres_virtual)
 746                 var->xoffset = var->xres_virtual - var->xres;
 747         if (var->yoffset + var->yres > var->yres_virtual)
 748                 var->yoffset = var->yres_virtual - var->yres;
 749
 750         var->nonstd = 0;
 751         var->height = -1;
 752         var->width = -1;
 753
 754         if (var->bits_per_pixel >= 24 || !par->neo2200)
 755                 var->accel_flags &= ~FB_ACCELF_TEXT;
 756         return 0;
 757 }
 758
 759 static int neofb_set_par(struct fb_info *info)
 760 {
 761         struct neofb_par *par = info->par;
 762         struct xtimings timings;
 763         unsigned char temp;
 764         int i, clock_hi = 0;
 765         int lcd_stretch;
 766         int hoffset, voffset;
 767
 768         DBG("neofb_set_par");
 769
 770         neoUnlock();
 771
 772         vgaHWProtect(1);        /* Blank the screen */
 773
 774         timings.dblscan = info->var.vmode & FB_VMODE_DOUBLE;
 775         timings.interlaced = info->var.vmode & FB_VMODE_INTERLACED;
 776         timings.HDisplay = info->var.xres;
 777         timings.HSyncStart = timings.HDisplay + info->var.right_margin;
 778         timings.HSyncEnd = timings.HSyncStart + info->var.hsync_len;
 779         timings.HTotal = timings.HSyncEnd + info->var.left_margin;
 780         timings.VDisplay = info->var.yres;
 781         timings.VSyncStart = timings.VDisplay + info->var.lower_margin;
 782         timings.VSyncEnd = timings.VSyncStart + info->var.vsync_len;
 783         timings.VTotal = timings.VSyncEnd + info->var.upper_margin;
 784         timings.sync = info->var.sync;
 785         timings.pixclock = PICOS2KHZ(info->var.pixclock);
 786
 787         if (timings.pixclock < 1)
 788                 timings.pixclock = 1;
 789
 790         /*
 791          * This will allocate the datastructure and initialize all of the
 792          * generic VGA registers.
 793          */
 794
 795         if (vgaHWInit(&info->var, info, par, &timings))
 796                 return -EINVAL;
 797
 798         /*
 799          * The default value assigned by vgaHW.c is 0x41, but this does
 800          * not work for NeoMagic.
 801          */
 802         par->Attribute[16] = 0x01;
 803
 804         switch (info->var.bits_per_pixel) {
 805         case 8:
 806                 par->CRTC[0x13] = info->var.xres_virtual >> 3;
 807                 par->ExtCRTOffset = info->var.xres_virtual >> 11;
 808                 par->ExtColorModeSelect = 0x11;
 809                 break;
 810         case 16:
 811                 par->CRTC[0x13] = info->var.xres_virtual >> 2;
 812                 par->ExtCRTOffset = info->var.xres_virtual >> 10;
 813                 par->ExtColorModeSelect = 0x13;
 814                 break;
 815         case 24:
 816                 par->CRTC[0x13] = (info->var.xres_virtual * 3) >> 3;
 817                 par->ExtCRTOffset = (info->var.xres_virtual * 3) >> 11;
 818                 par->ExtColorModeSelect = 0x14;
 819                 break;
 820 #ifdef NO_32BIT_SUPPORT_YET
 821         case 32:                /* FIXME: guessed values */
 822                 par->CRTC[0x13] = info->var.xres_virtual >> 1;
 823                 par->ExtCRTOffset = info->var.xres_virtual >> 9;
 824                 par->ExtColorModeSelect = 0x15;
 825                 break;
 826 #endif
 827         default:
 828                 break;
 829         }
 830
 831         par->ExtCRTDispAddr = 0x10;
 832
 833         /* Vertical Extension */
 834         par->VerticalExt = (((timings.VTotal - 2) & 0x400) >> 10)
 835             | (((timings.VDisplay - 1) & 0x400) >> 9)
 836             | (((timings.VSyncStart) & 0x400) >> 8)
 837             | (((timings.VSyncStart) & 0x400) >> 7);
 838
 839         /* Fast write bursts on unless disabled. */
 840         if (par->pci_burst)
 841                 par->SysIfaceCntl1 = 0x30;
 842         else
 843                 par->SysIfaceCntl1 = 0x00;
 844
 845         par->SysIfaceCntl2 = 0xc0;      /* VESA Bios sets this to 0x80! */
 846
 847         /* Initialize: by default, we want display config register to be read */
 848         par->PanelDispCntlRegRead = 1;
 849
 850         /* Enable any user specified display devices. */
 851         par->PanelDispCntlReg1 = 0x00;
 852         if (par->internal_display)
 853                 par->PanelDispCntlReg1 |= 0x02;
 854         if (par->external_display)
 855                 par->PanelDispCntlReg1 |= 0x01;
 856
 857         /* If the user did not specify any display devices, then... */
 858         if (par->PanelDispCntlReg1 == 0x00) {
 859                 /* Default to internal (i.e., LCD) only. */
 860                 par->PanelDispCntlReg1 = vga_rgfx(NULL, 0x20) & 0x03;
 861         }
 862
 863         /* If we are using a fixed mode, then tell the chip we are. */
 864         switch (info->var.xres) {
 865         case 1280:
 866                 par->PanelDispCntlReg1 |= 0x60;
 867                 break;
 868         case 1024:
 869                 par->PanelDispCntlReg1 |= 0x40;
 870                 break;
 871         case 800:
 872                 par->PanelDispCntlReg1 |= 0x20;
 873                 break;
 874         case 640:
 875         default:
 876                 break;
 877         }
 878
 879         /* Setup shadow register locking. */
 880         switch (par->PanelDispCntlReg1 & 0x03) {
 881         case 0x01:              /* External CRT only mode: */
 882                 par->GeneralLockReg = 0x00;
 883                 /* We need to program the VCLK for external display only mode. */
 884                 par->ProgramVCLK = 1;
 885                 break;
 886         case 0x02:              /* Internal LCD only mode: */
 887         case 0x03:              /* Simultaneous internal/external (LCD/CRT) mode: */
 888                 par->GeneralLockReg = 0x01;
 889                 /* Don't program the VCLK when using the LCD. */
 890                 par->ProgramVCLK = 0;
 891                 break;
 892         }
 893
 894         /*
 895          * If the screen is to be stretched, turn on stretching for the
 896          * various modes.
 897          *
 898          * OPTION_LCD_STRETCH means stretching should be turned off!
 899          */
 900         par->PanelDispCntlReg2 = 0x00;
 901         par->PanelDispCntlReg3 = 0x00;
 902
 903         if (par->lcd_stretch && (par->PanelDispCntlReg1 == 0x02) &&     /* LCD only */
 904             (info->var.xres != par->NeoPanelWidth)) {
 905                 switch (info->var.xres) {
 906                 case 320:       /* Needs testing.  KEM -- 24 May 98 */
 907                 case 400:       /* Needs testing.  KEM -- 24 May 98 */
 908                 case 640:
 909                 case 800:
 910                 case 1024:
 911                         lcd_stretch = 1;
 912                         par->PanelDispCntlReg2 |= 0xC6;
 913                         break;
 914                 default:
 915                         lcd_stretch = 0;
 916                         /* No stretching in these modes. */
 917                 }
 918         } else
 919                 lcd_stretch = 0;
 920
 921         /*
 922          * If the screen is to be centerd, turn on the centering for the
 923          * various modes.
 924          */
 925         par->PanelVertCenterReg1 = 0x00;
 926         par->PanelVertCenterReg2 = 0x00;
 927         par->PanelVertCenterReg3 = 0x00;
 928         par->PanelVertCenterReg4 = 0x00;
 929         par->PanelVertCenterReg5 = 0x00;
 930         par->PanelHorizCenterReg1 = 0x00;
 931         par->PanelHorizCenterReg2 = 0x00;
 932         par->PanelHorizCenterReg3 = 0x00;
 933         par->PanelHorizCenterReg4 = 0x00;
 934         par->PanelHorizCenterReg5 = 0x00;
 935
 936
 937         if (par->PanelDispCntlReg1 & 0x02) {
 938                 if (info->var.xres == par->NeoPanelWidth) {
 939                         /*
 940                          * No centering required when the requested display width
 941                          * equals the panel width.
 942                          */
 943                 } else {
 944                         par->PanelDispCntlReg2 |= 0x01;
 945                         par->PanelDispCntlReg3 |= 0x10;
 946
 947                         /* Calculate the horizontal and vertical offsets. */
 948                         if (!lcd_stretch) {
 949                                 hoffset =
 950                                     ((par->NeoPanelWidth -
 951                                       info->var.xres) >> 4) - 1;
 952                                 voffset =
 953                                     ((par->NeoPanelHeight -
 954                                       info->var.yres) >> 1) - 2;
 955                         } else {
 956                                 /* Stretched modes cannot be centered. */
 957                                 hoffset = 0;
 958                                 voffset = 0;
 959                         }
 960
 961                         switch (info->var.xres) {
 962                         case 320:       /* Needs testing.  KEM -- 24 May 98 */
 963                                 par->PanelHorizCenterReg3 = hoffset;
 964                                 par->PanelVertCenterReg2 = voffset;
 965                                 break;
 966                         case 400:       /* Needs testing.  KEM -- 24 May 98 */
 967                                 par->PanelHorizCenterReg4 = hoffset;
 968                                 par->PanelVertCenterReg1 = voffset;
 969                                 break;
 970                         case 640:
 971                                 par->PanelHorizCenterReg1 = hoffset;
 972                                 par->PanelVertCenterReg3 = voffset;
 973                                 break;
 974                         case 800:
 975                                 par->PanelHorizCenterReg2 = hoffset;
 976                                 par->PanelVertCenterReg4 = voffset;
 977                                 break;
 978                         case 1024:
 979                                 par->PanelHorizCenterReg5 = hoffset;
 980                                 par->PanelVertCenterReg5 = voffset;
 981                                 break;
 982                         case 1280:
 983                         default:
 984                                 /* No centering in these modes. */
 985                                 break;
 986                         }
 987                 }
 988         }
 989
 990         par->biosMode =
 991             neoFindMode(info->var.xres, info->var.yres,
 992                         info->var.bits_per_pixel);
 993
 994         /*
 995          * Calculate the VCLK that most closely matches the requested dot
 996          * clock.
 997          */
 998         neoCalcVCLK(info, par, timings.pixclock);
 999
1000         /* Since we program the clocks ourselves, always use VCLK3. */
1001         par->MiscOutReg |= 0x0C;
1002
1003         /* alread unlocked above */
1004         /* BOGUS  vga_wgfx(NULL, 0x09, 0x26); */
1005
1006         /* don't know what this is, but it's 0 from bootup anyway */
1007         vga_wgfx(NULL, 0x15, 0x00);
1008
1009         /* was set to 0x01 by my bios in text and vesa modes */
1010         vga_wgfx(NULL, 0x0A, par->GeneralLockReg);
1011
1012         /*
1013          * The color mode needs to be set before calling vgaHWRestore
1014          * to ensure the DAC is initialized properly.
1015          *
1016          * NOTE: Make sure we don't change bits make sure we don't change
1017          * any reserved bits.
1018          */
1019         temp = vga_rgfx(NULL, 0x90);
1020         switch (info->fix.accel) {
1021         case FB_ACCEL_NEOMAGIC_NM2070:
1022                 temp &= 0xF0;   /* Save bits 7:4 */
1023                 temp |= (par->ExtColorModeSelect & ~0xF0);
1024                 break;
1025         case FB_ACCEL_NEOMAGIC_NM2090:
1026         case FB_ACCEL_NEOMAGIC_NM2093:
1027         case FB_ACCEL_NEOMAGIC_NM2097:
1028         case FB_ACCEL_NEOMAGIC_NM2160:
1029         case FB_ACCEL_NEOMAGIC_NM2200:
1030         case FB_ACCEL_NEOMAGIC_NM2230:
1031         case FB_ACCEL_NEOMAGIC_NM2360:
1032         case FB_ACCEL_NEOMAGIC_NM2380:
1033                 temp &= 0x70;   /* Save bits 6:4 */
1034                 temp |= (par->ExtColorModeSelect & ~0x70);
1035                 break;
1036         }
1037
1038         vga_wgfx(NULL, 0x90, temp);
1039
1040         /*
1041          * In some rare cases a lockup might occur if we don't delay
1042          * here. (Reported by Miles Lane)
1043          */
1044         //mdelay(200);
1045
1046         /*
1047          * Disable horizontal and vertical graphics and text expansions so
1048          * that vgaHWRestore works properly.
1049          */
1050         temp = vga_rgfx(NULL, 0x25);
1051         temp &= 0x39;
1052         vga_wgfx(NULL, 0x25, temp);
1053
1054         /*
1055          * Sleep for 200ms to make sure that the two operations above have
1056          * had time to take effect.
1057          */
1058         mdelay(200);
1059
1060         /*
1061          * This function handles restoring the generic VGA registers.  */
1062         vgaHWRestore(info, par);
1063
1064         /* linear colormap for non palettized modes */
1065         switch (info->var.bits_per_pixel) {
1066         case 8:
1067                 /* PseudoColor, 256 */
1068                 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
1069                 break;
1070         case 16:
1071                 /* TrueColor, 64k */
1072                 info->fix.visual = FB_VISUAL_TRUECOLOR;
1073
1074                 for (i = 0; i < 64; i++) {
1075                         outb(i, 0x3c8);
1076
1077                         outb(i << 1, 0x3c9);
1078                         outb(i, 0x3c9);
1079                         outb(i << 1, 0x3c9);
1080                 }
1081                 break;
1082         case 24:
1083 #ifdef NO_32BIT_SUPPORT_YET
1084         case 32:
1085 #endif
1086                 /* TrueColor, 16m */
1087                 info->fix.visual = FB_VISUAL_TRUECOLOR;
1088
1089                 for (i = 0; i < 256; i++) {
1090                         outb(i, 0x3c8);
1091
1092                         outb(i, 0x3c9);
1093                         outb(i, 0x3c9);
1094                         outb(i, 0x3c9);
1095                 }
1096                 break;
1097         }
1098
1099         vga_wgfx(NULL, 0x0E, par->ExtCRTDispAddr);
1100         vga_wgfx(NULL, 0x0F, par->ExtCRTOffset);
1101         temp = vga_rgfx(NULL, 0x10);
1102         temp &= 0x0F;           /* Save bits 3:0 */
1103         temp |= (par->SysIfaceCntl1 & ~0x0F);   /* VESA Bios sets bit 1! */
1104         vga_wgfx(NULL, 0x10, temp);
1105
1106         vga_wgfx(NULL, 0x11, par->SysIfaceCntl2);
1107         vga_wgfx(NULL, 0x15, 0 /*par->SingleAddrPage */ );
1108         vga_wgfx(NULL, 0x16, 0 /*par->DualAddrPage */ );
1109
1110         temp = vga_rgfx(NULL, 0x20);
1111         switch (info->fix.accel) {
1112         case FB_ACCEL_NEOMAGIC_NM2070:
1113                 temp &= 0xFC;   /* Save bits 7:2 */
1114                 temp |= (par->PanelDispCntlReg1 & ~0xFC);
1115                 break;
1116         case FB_ACCEL_NEOMAGIC_NM2090:
1117         case FB_ACCEL_NEOMAGIC_NM2093:
1118         case FB_ACCEL_NEOMAGIC_NM2097:
1119         case FB_ACCEL_NEOMAGIC_NM2160:
1120                 temp &= 0xDC;   /* Save bits 7:6,4:2 */
1121                 temp |= (par->PanelDispCntlReg1 & ~0xDC);
1122                 break;
1123         case FB_ACCEL_NEOMAGIC_NM2200:
1124         case FB_ACCEL_NEOMAGIC_NM2230:
1125         case FB_ACCEL_NEOMAGIC_NM2360:
1126         case FB_ACCEL_NEOMAGIC_NM2380:
1127                 temp &= 0x98;   /* Save bits 7,4:3 */
1128                 temp |= (par->PanelDispCntlReg1 & ~0x98);
1129                 break;
1130         }
1131         vga_wgfx(NULL, 0x20, temp);
1132
1133         temp = vga_rgfx(NULL, 0x25);
1134         temp &= 0x38;           /* Save bits 5:3 */
1135         temp |= (par->PanelDispCntlReg2 & ~0x38);
1136         vga_wgfx(NULL, 0x25, temp);
1137
1138         if (info->fix.accel != FB_ACCEL_NEOMAGIC_NM2070) {
1139                 temp = vga_rgfx(NULL, 0x30);
1140                 temp &= 0xEF;   /* Save bits 7:5 and bits 3:0 */
1141                 temp |= (par->PanelDispCntlReg3 & ~0xEF);
1142                 vga_wgfx(NULL, 0x30, temp);
1143         }
1144
1145         vga_wgfx(NULL, 0x28, par->PanelVertCenterReg1);
1146         vga_wgfx(NULL, 0x29, par->PanelVertCenterReg2);
1147         vga_wgfx(NULL, 0x2a, par->PanelVertCenterReg3);
1148
1149         if (info->fix.accel != FB_ACCEL_NEOMAGIC_NM2070) {
1150                 vga_wgfx(NULL, 0x32, par->PanelVertCenterReg4);
1151                 vga_wgfx(NULL, 0x33, par->PanelHorizCenterReg1);
1152                 vga_wgfx(NULL, 0x34, par->PanelHorizCenterReg2);
1153                 vga_wgfx(NULL, 0x35, par->PanelHorizCenterReg3);
1154         }
1155
1156         if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2160)
1157                 vga_wgfx(NULL, 0x36, par->PanelHorizCenterReg4);
1158
1159         if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
1160             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
1161             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
1162             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
1163                 vga_wgfx(NULL, 0x36, par->PanelHorizCenterReg4);
1164                 vga_wgfx(NULL, 0x37, par->PanelVertCenterReg5);
1165                 vga_wgfx(NULL, 0x38, par->PanelHorizCenterReg5);
1166
1167                 clock_hi = 1;
1168         }
1169
1170         /* Program VCLK3 if needed. */
1171         if (par->ProgramVCLK && ((vga_rgfx(NULL, 0x9B) != par->VCLK3NumeratorLow)
1172                                  || (vga_rgfx(NULL, 0x9F) != par->VCLK3Denominator)
1173                                  || (clock_hi && ((vga_rgfx(NULL, 0x8F) & ~0x0f)
1174                                                   != (par->VCLK3NumeratorHigh &
1175                                                       ~0x0F))))) {
1176                 vga_wgfx(NULL, 0x9B, par->VCLK3NumeratorLow);
1177                 if (clock_hi) {
1178                         temp = vga_rgfx(NULL, 0x8F);
1179                         temp &= 0x0F;   /* Save bits 3:0 */
1180                         temp |= (par->VCLK3NumeratorHigh & ~0x0F);
1181                         vga_wgfx(NULL, 0x8F, temp);
1182                 }
1183                 vga_wgfx(NULL, 0x9F, par->VCLK3Denominator);
1184         }
1185
1186         if (par->biosMode)
1187                 vga_wcrt(NULL, 0x23, par->biosMode);
1188
1189         vga_wgfx(NULL, 0x93, 0xc0);     /* Gives 5x faster framebuffer writes !!! */
1190
1191         /* Program vertical extension register */
1192         if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
1193             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
1194             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
1195             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
1196                 vga_wcrt(NULL, 0x70, par->VerticalExt);
1197         }
1198
1199         vgaHWProtect(0);        /* Turn on screen */
1200
1201         /* Calling this also locks offset registers required in update_start */
1202         neoLock(&par->state);
1203
1204         info->fix.line_length =
1205             info->var.xres_virtual * (info->var.bits_per_pixel >> 3);
1206
1207         switch (info->fix.accel) {
1208                 case FB_ACCEL_NEOMAGIC_NM2200:
1209                 case FB_ACCEL_NEOMAGIC_NM2230:
1210                 case FB_ACCEL_NEOMAGIC_NM2360:
1211                 case FB_ACCEL_NEOMAGIC_NM2380:
1212                         neo2200_accel_init(info, &info->var);
1213                         break;
1214                 default:
1215                         break;
1216         }
1217         return 0;
1218 }
1219
1220 static void neofb_update_start(struct fb_info *info,
1221                                struct fb_var_screeninfo *var)
1222 {
1223         struct neofb_par *par = info->par;
1224         struct vgastate *state = &par->state;
1225         int oldExtCRTDispAddr;
1226         int Base;
1227
1228         DBG("neofb_update_start");
1229
1230         Base = (var->yoffset * var->xres_virtual + var->xoffset) >> 2;
1231         Base *= (var->bits_per_pixel + 7) / 8;
1232
1233         neoUnlock();
1234
1235         /*
1236          * These are the generic starting address registers.
1237          */
1238         vga_wcrt(state->vgabase, 0x0C, (Base & 0x00FF00) >> 8);
1239         vga_wcrt(state->vgabase, 0x0D, (Base & 0x00FF));
1240
1241         /*
1242          * Make sure we don't clobber some other bits that might already
1243          * have been set. NOTE: NM2200 has a writable bit 3, but it shouldn't
1244          * be needed.
1245          */
1246         oldExtCRTDispAddr = vga_rgfx(NULL, 0x0E);
1247         vga_wgfx(state->vgabase, 0x0E, (((Base >> 16) & 0x0f) | (oldExtCRTDispAddr & 0xf0)));
1248
1249         neoLock(state);
1250 }
1251
1252 /*
1253  *    Pan or Wrap the Display
1254  */
1255 static int neofb_pan_display(struct fb_var_screeninfo *var,
1256                              struct fb_info *info)
1257 {
1258         u_int y_bottom;
1259
1260         y_bottom = var->yoffset;
1261
1262         if (!(var->vmode & FB_VMODE_YWRAP))
1263                 y_bottom += var->yres;
1264
1265         if (var->xoffset > (var->xres_virtual - var->xres))
1266                 return -EINVAL;
1267         if (y_bottom > info->var.yres_virtual)
1268                 return -EINVAL;
1269
1270         neofb_update_start(info, var);
1271
1272         info->var.xoffset = var->xoffset;
1273         info->var.yoffset = var->yoffset;
1274
1275         if (var->vmode & FB_VMODE_YWRAP)
1276                 info->var.vmode |= FB_VMODE_YWRAP;
1277         else
1278                 info->var.vmode &= ~FB_VMODE_YWRAP;
1279         return 0;
1280 }
1281
1282 static int neofb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1283                            u_int transp, struct fb_info *fb)
1284 {
1285         if (regno >= fb->cmap.len || regno > 255)
1286                 return -EINVAL;
1287
1288         switch (fb->var.bits_per_pixel) {
1289         case 8:
1290                 outb(regno, 0x3c8);
1291
1292                 outb(red >> 10, 0x3c9);
1293                 outb(green >> 10, 0x3c9);
1294                 outb(blue >> 10, 0x3c9);
1295                 break;
1296         case 16:
1297                 ((u32 *) fb->pseudo_palette)[regno] =
1298                                 ((red & 0xf800)) | ((green & 0xfc00) >> 5) |
1299                                 ((blue & 0xf800) >> 11);
1300                 break;
1301         case 24:
1302                 ((u32 *) fb->pseudo_palette)[regno] =
1303                                 ((red & 0xff00) << 8) | ((green & 0xff00)) |
1304                                 ((blue & 0xff00) >> 8);
1305                 break;
1306 #ifdef NO_32BIT_SUPPORT_YET
1307         case 32:
1308                 ((u32 *) fb->pseudo_palette)[regno] =
1309                                 ((transp & 0xff00) << 16) | ((red & 0xff00) << 8) |
1310                                 ((green & 0xff00)) | ((blue & 0xff00) >> 8);
1311                 break;
1312 #endif
1313         default:
1314                 return 1;
1315         }
1316         return 0;
1317 }
1318
1319 /*
1320  *    (Un)Blank the display.
1321  */
1322 static int neofb_blank(int blank_mode, struct fb_info *info)
1323 {
1324         /*
1325          *  Blank the screen if blank_mode != 0, else unblank.
1326          *  Return 0 if blanking succeeded, != 0 if un-/blanking failed due to
1327          *  e.g. a video mode which doesn't support it. Implements VESA suspend
1328          *  and powerdown modes for monitors, and backlight control on LCDs.
1329          *    blank_mode == 0: unblanked (backlight on)
1330          *    blank_mode == 1: blank (backlight on)
1331          *    blank_mode == 2: suspend vsync (backlight off)
1332          *    blank_mode == 3: suspend hsync (backlight off)
1333          *    blank_mode == 4: powerdown (backlight off)
1334          *
1335          *  wms...Enable VESA DPMS compatible powerdown mode
1336          *  run "setterm -powersave powerdown" to take advantage
1337          */
1338         struct neofb_par *par = info->par;
1339         int seqflags, lcdflags, dpmsflags, reg, tmpdisp;
1340
1341         /*
1342          * Read back the register bits related to display configuration. They might
1343          * have been changed underneath the driver via Fn key stroke.
1344          */
1345         neoUnlock();
1346         tmpdisp = vga_rgfx(NULL, 0x20) & 0x03;
1347         neoLock(&par->state);
1348
1349         /* In case we blank the screen, we want to store the possibly new
1350          * configuration in the driver. During un-blank, we re-apply this setting,
1351          * since the LCD bit will be cleared in order to switch off the backlight.
1352          */
1353         if (par->PanelDispCntlRegRead) {
1354                 par->PanelDispCntlReg1 = tmpdisp;
1355         }
1356         par->PanelDispCntlRegRead = !blank_mode;
1357
1358         switch (blank_mode) {
1359         case FB_BLANK_POWERDOWN:        /* powerdown - both sync lines down */
1360                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1361                 lcdflags = 0;                   /* LCD off */
1362                 dpmsflags = NEO_GR01_SUPPRESS_HSYNC |
1363                             NEO_GR01_SUPPRESS_VSYNC;
1364 #ifdef CONFIG_TOSHIBA
1365                 /* Do we still need this ? */
1366                 /* attempt to turn off backlight on toshiba; also turns off external */
1367                 {
1368                         SMMRegisters regs;
1369
1370                         regs.eax = 0xff00; /* HCI_SET */
1371                         regs.ebx = 0x0002; /* HCI_BACKLIGHT */
1372                         regs.ecx = 0x0000; /* HCI_DISABLE */
1373                         tosh_smm(&regs);
1374                 }
1375 #endif
1376                 break;
1377         case FB_BLANK_HSYNC_SUSPEND:            /* hsync off */
1378                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1379                 lcdflags = 0;                   /* LCD off */
1380                 dpmsflags = NEO_GR01_SUPPRESS_HSYNC;
1381                 break;
1382         case FB_BLANK_VSYNC_SUSPEND:            /* vsync off */
1383                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1384                 lcdflags = 0;                   /* LCD off */
1385                 dpmsflags = NEO_GR01_SUPPRESS_VSYNC;
1386                 break;
1387         case FB_BLANK_NORMAL:           /* just blank screen (backlight stays on) */
1388                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1389                 /*
1390                  * During a blank operation with the LID shut, we might store "LCD off"
1391                  * by mistake. Due to timing issues, the BIOS may switch the lights
1392                  * back on, and we turn it back off once we "unblank".
1393                  *
1394                  * So here is an attempt to implement ">=" - if we are in the process
1395                  * of unblanking, and the LCD bit is unset in the driver but set in the
1396                  * register, we must keep it.
1397                  */
1398                 lcdflags = ((par->PanelDispCntlReg1 | tmpdisp) & 0x02); /* LCD normal */
1399                 dpmsflags = 0x00;       /* no hsync/vsync suppression */
1400                 break;
1401         case FB_BLANK_UNBLANK:          /* unblank */
1402                 seqflags = 0;                   /* Enable sequencer */
1403                 lcdflags = ((par->PanelDispCntlReg1 | tmpdisp) & 0x02); /* LCD normal */
1404                 dpmsflags = 0x00;       /* no hsync/vsync suppression */
1405 #ifdef CONFIG_TOSHIBA
1406                 /* Do we still need this ? */
1407                 /* attempt to re-enable backlight/external on toshiba */
1408                 {
1409                         SMMRegisters regs;
1410
1411                         regs.eax = 0xff00; /* HCI_SET */
1412                         regs.ebx = 0x0002; /* HCI_BACKLIGHT */
1413                         regs.ecx = 0x0001; /* HCI_ENABLE */
1414                         tosh_smm(&regs);
1415                 }
1416 #endif
1417                 break;
1418         default:        /* Anything else we don't understand; return 1 to tell
1419                          * fb_blank we didn't aactually do anything */
1420                 return 1;
1421         }
1422
1423         neoUnlock();
1424         reg = (vga_rseq(NULL, 0x01) & ~0x20) | seqflags;
1425         vga_wseq(NULL, 0x01, reg);
1426         reg = (vga_rgfx(NULL, 0x20) & ~0x02) | lcdflags;
1427         vga_wgfx(NULL, 0x20, reg);
1428         reg = (vga_rgfx(NULL, 0x01) & ~0xF0) | 0x80 | dpmsflags;
1429         vga_wgfx(NULL, 0x01, reg);
1430         neoLock(&par->state);
1431         return 0;
1432 }
1433
1434 static void
1435 neo2200_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
1436 {
1437         struct neofb_par *par = info->par;
1438         u_long dst, rop;
1439
1440         dst = rect->dx + rect->dy * info->var.xres_virtual;
1441         rop = rect->rop ? 0x060000 : 0x0c0000;
1442
1443         neo2200_wait_fifo(info, 4);
1444
1445         /* set blt control */
1446         writel(NEO_BC3_FIFO_EN |
1447                NEO_BC0_SRC_IS_FG | NEO_BC3_SKIP_MAPPING |
1448                //               NEO_BC3_DST_XY_ADDR  |
1449                //               NEO_BC3_SRC_XY_ADDR  |
1450                rop, &par->neo2200->bltCntl);
1451
1452         switch (info->var.bits_per_pixel) {
1453         case 8:
1454                 writel(rect->color, &par->neo2200->fgColor);
1455                 break;
1456         case 16:
1457         case 24:
1458                 writel(((u32 *) (info->pseudo_palette))[rect->color],
1459                        &par->neo2200->fgColor);
1460                 break;
1461         }
1462
1463         writel(dst * ((info->var.bits_per_pixel + 7) >> 3),
1464                &par->neo2200->dstStart);
1465         writel((rect->height << 16) | (rect->width & 0xffff),
1466                &par->neo2200->xyExt);
1467 }
1468
1469 static void
1470 neo2200_copyarea(struct fb_info *info, const struct fb_copyarea *area)
1471 {
1472         u32 sx = area->sx, sy = area->sy, dx = area->dx, dy = area->dy;
1473         struct neofb_par *par = info->par;
1474         u_long src, dst, bltCntl;
1475
1476         bltCntl = NEO_BC3_FIFO_EN | NEO_BC3_SKIP_MAPPING | 0x0C0000;
1477
1478         if ((dy > sy) || ((dy == sy) && (dx > sx))) {
1479                 /* Start with the lower right corner */
1480                 sy += (area->height - 1);
1481                 dy += (area->height - 1);
1482                 sx += (area->width - 1);
1483                 dx += (area->width - 1);
1484
1485                 bltCntl |= NEO_BC0_X_DEC | NEO_BC0_DST_Y_DEC | NEO_BC0_SRC_Y_DEC;
1486         }
1487
1488         src = sx * (info->var.bits_per_pixel >> 3) + sy*info->fix.line_length;
1489         dst = dx * (info->var.bits_per_pixel >> 3) + dy*info->fix.line_length;
1490
1491         neo2200_wait_fifo(info, 4);
1492
1493         /* set blt control */
1494         writel(bltCntl, &par->neo2200->bltCntl);
1495
1496         writel(src, &par->neo2200->srcStart);
1497         writel(dst, &par->neo2200->dstStart);
1498         writel((area->height << 16) | (area->width & 0xffff),
1499                &par->neo2200->xyExt);
1500 }
1501
1502 static void
1503 neo2200_imageblit(struct fb_info *info, const struct fb_image *image)
1504 {
1505         struct neofb_par *par = info->par;
1506         int s_pitch = (image->width * image->depth + 7) >> 3;
1507         int scan_align = info->pixmap.scan_align - 1;
1508         int buf_align = info->pixmap.buf_align - 1;
1509         int bltCntl_flags, d_pitch, data_len;
1510
1511         // The data is padded for the hardware
1512         d_pitch = (s_pitch + scan_align) & ~scan_align;
1513         data_len = ((d_pitch * image->height) + buf_align) & ~buf_align;
1514
1515         neo2200_sync(info);
1516
1517         if (image->depth == 1) {
1518                 if (info->var.bits_per_pixel == 24 && image->width < 16) {
1519                         /* FIXME. There is a bug with accelerated color-expanded
1520                          * transfers in 24 bit mode if the image being transferred
1521                          * is less than 16 bits wide. This is due to insufficient
1522                          * padding when writing the image. We need to adjust
1523                          * struct fb_pixmap. Not yet done. */
1524                         return cfb_imageblit(info, image);
1525                 }
1526                 bltCntl_flags = NEO_BC0_SRC_MONO;
1527         } else if (image->depth == info->var.bits_per_pixel) {
1528                 bltCntl_flags = 0;
1529         } else {
1530                 /* We don't currently support hardware acceleration if image
1531                  * depth is different from display */
1532                 return cfb_imageblit(info, image);
1533         }
1534
1535         switch (info->var.bits_per_pixel) {
1536         case 8:
1537                 writel(image->fg_color, &par->neo2200->fgColor);
1538                 writel(image->bg_color, &par->neo2200->bgColor);
1539                 break;
1540         case 16:
1541         case 24:
1542                 writel(((u32 *) (info->pseudo_palette))[image->fg_color],
1543                        &par->neo2200->fgColor);
1544                 writel(((u32 *) (info->pseudo_palette))[image->bg_color],
1545                        &par->neo2200->bgColor);
1546                 break;
1547         }
1548
1549         writel(NEO_BC0_SYS_TO_VID |
1550                 NEO_BC3_SKIP_MAPPING | bltCntl_flags |
1551                 // NEO_BC3_DST_XY_ADDR |
1552                 0x0c0000, &par->neo2200->bltCntl);
1553
1554         writel(0, &par->neo2200->srcStart);
1555 //      par->neo2200->dstStart = (image->dy << 16) | (image->dx & 0xffff);
1556         writel(((image->dx & 0xffff) * (info->var.bits_per_pixel >> 3) +
1557                 image->dy * info->fix.line_length), &par->neo2200->dstStart);
1558         writel((image->height << 16) | (image->width & 0xffff),
1559                &par->neo2200->xyExt);
1560
1561         memcpy_toio(par->mmio_vbase + 0x100000, image->data, data_len);
1562 }
1563
1564 static void
1565 neofb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
1566 {
1567         switch (info->fix.accel) {
1568                 case FB_ACCEL_NEOMAGIC_NM2200:
1569                 case FB_ACCEL_NEOMAGIC_NM2230:
1570                 case FB_ACCEL_NEOMAGIC_NM2360:
1571                 case FB_ACCEL_NEOMAGIC_NM2380:
1572                         neo2200_fillrect(info, rect);
1573                         break;
1574                 default:
1575                         cfb_fillrect(info, rect);
1576                         break;
1577         }
1578 }
1579
1580 static void
1581 neofb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
1582 {
1583         switch (info->fix.accel) {
1584                 case FB_ACCEL_NEOMAGIC_NM2200:
1585                 case FB_ACCEL_NEOMAGIC_NM2230:
1586                 case FB_ACCEL_NEOMAGIC_NM2360:
1587                 case FB_ACCEL_NEOMAGIC_NM2380:
1588                         neo2200_copyarea(info, area);
1589                         break;
1590                 default:
1591                         cfb_copyarea(info, area);
1592                         break;
1593         }
1594 }
1595
1596 static void
1597 neofb_imageblit(struct fb_info *info, const struct fb_image *image)
1598 {
1599         switch (info->fix.accel) {
1600                 case FB_ACCEL_NEOMAGIC_NM2200:
1601                 case FB_ACCEL_NEOMAGIC_NM2230:
1602                 case FB_ACCEL_NEOMAGIC_NM2360:
1603                 case FB_ACCEL_NEOMAGIC_NM2380:
1604                         neo2200_imageblit(info, image);
1605                         break;
1606                 default:
1607                         cfb_imageblit(info, image);
1608                         break;
1609         }
1610 }
1611
1612 static int
1613 neofb_sync(struct fb_info *info)
1614 {
1615         switch (info->fix.accel) {
1616                 case FB_ACCEL_NEOMAGIC_NM2200:
1617                 case FB_ACCEL_NEOMAGIC_NM2230:
1618                 case FB_ACCEL_NEOMAGIC_NM2360:
1619                 case FB_ACCEL_NEOMAGIC_NM2380:
1620                         neo2200_sync(info);
1621                         break;
1622                 default:
1623                         break;
1624         }
1625         return 0;
1626 }
1627
1628 /*
1629 static void
1630 neofb_draw_cursor(struct fb_info *info, u8 *dst, u8 *src, unsigned int width)
1631 {
1632         //memset_io(info->sprite.addr, 0xff, 1);
1633 }
1634
1635 static int
1636 neofb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1637 {
1638         struct neofb_par *par = (struct neofb_par *) info->par;
1639
1640         * Disable cursor *
1641         write_le32(NEOREG_CURSCNTL, ~NEO_CURS_ENABLE, par);
1642
1643         if (cursor->set & FB_CUR_SETPOS) {
1644                 u32 x = cursor->image.dx;
1645                 u32 y = cursor->image.dy;
1646
1647                 info->cursor.image.dx = x;
1648                 info->cursor.image.dy = y;
1649                 write_le32(NEOREG_CURSX, x, par);
1650                 write_le32(NEOREG_CURSY, y, par);
1651         }
1652
1653         if (cursor->set & FB_CUR_SETSIZE) {
1654                 info->cursor.image.height = cursor->image.height;
1655                 info->cursor.image.width = cursor->image.width;
1656         }
1657
1658         if (cursor->set & FB_CUR_SETHOT)
1659                 info->cursor.hot = cursor->hot;
1660
1661         if (cursor->set & FB_CUR_SETCMAP) {
1662                 if (cursor->image.depth == 1) {
1663                         u32 fg = cursor->image.fg_color;
1664                         u32 bg = cursor->image.bg_color;
1665
1666                         info->cursor.image.fg_color = fg;
1667                         info->cursor.image.bg_color = bg;
1668
1669                         fg = ((fg & 0xff0000) >> 16) | ((fg & 0xff) << 16) | (fg & 0xff00);
1670                         bg = ((bg & 0xff0000) >> 16) | ((bg & 0xff) << 16) | (bg & 0xff00);
1671                         write_le32(NEOREG_CURSFGCOLOR, fg, par);
1672                         write_le32(NEOREG_CURSBGCOLOR, bg, par);
1673                 }
1674         }
1675
1676         if (cursor->set & FB_CUR_SETSHAPE)
1677                 fb_load_cursor_image(info);
1678
1679         if (info->cursor.enable)
1680                 write_le32(NEOREG_CURSCNTL, NEO_CURS_ENABLE, par);
1681         return 0;
1682 }
1683 */
1684
1685 static struct fb_ops neofb_ops = {
1686         .owner          = THIS_MODULE,
1687         .fb_open        = neofb_open,
1688         .fb_release     = neofb_release,
1689         .fb_check_var   = neofb_check_var,
1690         .fb_set_par     = neofb_set_par,
1691         .fb_setcolreg   = neofb_setcolreg,
1692         .fb_pan_display = neofb_pan_display,
1693         .fb_blank       = neofb_blank,
1694         .fb_sync        = neofb_sync,
1695         .fb_fillrect    = neofb_fillrect,
1696         .fb_copyarea    = neofb_copyarea,
1697         .fb_imageblit   = neofb_imageblit,
1698 };
1699
1700 /* --------------------------------------------------------------------- */
1701
1702 static struct fb_videomode __devinitdata mode800x480 = {
1703         .xres           = 800,
1704         .yres           = 480,
1705         .pixclock       = 25000,
1706         .left_margin    = 88,
1707         .right_margin   = 40,
1708         .upper_margin   = 23,
1709         .lower_margin   = 1,
1710         .hsync_len      = 128,
1711         .vsync_len      = 4,
1712         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
1713         .vmode          = FB_VMODE_NONINTERLACED
1714 };
1715
1716 static int __devinit neo_map_mmio(struct fb_info *info,
1717                                   struct pci_dev *dev)
1718 {
1719         struct neofb_par *par = info->par;
1720
1721         DBG("neo_map_mmio");
1722
1723         switch (info->fix.accel) {
1724                 case FB_ACCEL_NEOMAGIC_NM2070:
1725                         info->fix.mmio_start = pci_resource_start(dev, 0)+
1726                                 0x100000;
1727                         break;
1728                 case FB_ACCEL_NEOMAGIC_NM2090:
1729                 case FB_ACCEL_NEOMAGIC_NM2093:
1730                         info->fix.mmio_start = pci_resource_start(dev, 0)+
1731                                 0x200000;
1732                         break;
1733                 case FB_ACCEL_NEOMAGIC_NM2160:
1734                 case FB_ACCEL_NEOMAGIC_NM2097:
1735                 case FB_ACCEL_NEOMAGIC_NM2200:
1736                 case FB_ACCEL_NEOMAGIC_NM2230:
1737                 case FB_ACCEL_NEOMAGIC_NM2360:
1738                 case FB_ACCEL_NEOMAGIC_NM2380:
1739                         info->fix.mmio_start = pci_resource_start(dev, 1);
1740                         break;
1741                 default:
1742                         info->fix.mmio_start = pci_resource_start(dev, 0);
1743         }
1744         info->fix.mmio_len = MMIO_SIZE;
1745
1746         if (!request_mem_region
1747             (info->fix.mmio_start, MMIO_SIZE, "memory mapped I/O")) {
1748                 printk("neofb: memory mapped IO in use\n");
1749                 return -EBUSY;
1750         }
1751
1752         par->mmio_vbase = ioremap(info->fix.mmio_start, MMIO_SIZE);
1753         if (!par->mmio_vbase) {
1754                 printk("neofb: unable to map memory mapped IO\n");
1755                 release_mem_region(info->fix.mmio_start,
1756                                    info->fix.mmio_len);
1757                 return -ENOMEM;
1758         } else
1759                 printk(KERN_INFO "neofb: mapped io at %p\n",
1760                        par->mmio_vbase);
1761         return 0;
1762 }
1763
1764 static void neo_unmap_mmio(struct fb_info *info)
1765 {
1766         struct neofb_par *par = info->par;
1767
1768         DBG("neo_unmap_mmio");
1769
1770         iounmap(par->mmio_vbase);
1771         par->mmio_vbase = NULL;
1772
1773         release_mem_region(info->fix.mmio_start,
1774                            info->fix.mmio_len);
1775 }
1776
1777 static int __devinit neo_map_video(struct fb_info *info,
1778                                    struct pci_dev *dev, int video_len)
1779 {
1780         //unsigned long addr;
1781
1782         DBG("neo_map_video");
1783
1784         info->fix.smem_start = pci_resource_start(dev, 0);
1785         info->fix.smem_len = video_len;
1786
1787         if (!request_mem_region(info->fix.smem_start, info->fix.smem_len,
1788                                 "frame buffer")) {
1789                 printk("neofb: frame buffer in use\n");
1790                 return -EBUSY;
1791         }
1792
1793         info->screen_base =
1794             ioremap(info->fix.smem_start, info->fix.smem_len);
1795         if (!info->screen_base) {
1796                 printk("neofb: unable to map screen memory\n");
1797                 release_mem_region(info->fix.smem_start,
1798                                    info->fix.smem_len);
1799                 return -ENOMEM;
1800         } else
1801                 printk(KERN_INFO "neofb: mapped framebuffer at %p\n",
1802                        info->screen_base);
1803
1804 #ifdef CONFIG_MTRR
1805         ((struct neofb_par *)(info->par))->mtrr =
1806                 mtrr_add(info->fix.smem_start, pci_resource_len(dev, 0),
1807                                 MTRR_TYPE_WRCOMB, 1);
1808 #endif
1809
1810         /* Clear framebuffer, it's all white in memory after boot */
1811         memset_io(info->screen_base, 0, info->fix.smem_len);
1812
1813         /* Allocate Cursor drawing pad.
1814         info->fix.smem_len -= PAGE_SIZE;
1815         addr = info->fix.smem_start + info->fix.smem_len;
1816         write_le32(NEOREG_CURSMEMPOS, ((0x000f & (addr >> 10)) << 8) |
1817                                         ((0x0ff0 & (addr >> 10)) >> 4), par);
1818         addr = (unsigned long) info->screen_base + info->fix.smem_len;
1819         info->sprite.addr = (u8 *) addr; */
1820         return 0;
1821 }
1822
1823 static void neo_unmap_video(struct fb_info *info)
1824 {
1825         DBG("neo_unmap_video");
1826
1827 #ifdef CONFIG_MTRR
1828         {
1829                 struct neofb_par *par = info->par;
1830
1831                 mtrr_del(par->mtrr, info->fix.smem_start,
1832                          info->fix.smem_len);
1833         }
1834 #endif
1835         iounmap(info->screen_base);
1836         info->screen_base = NULL;
1837
1838         release_mem_region(info->fix.smem_start,
1839                            info->fix.smem_len);
1840 }
1841
1842 static int __devinit neo_scan_monitor(struct fb_info *info)
1843 {
1844         struct neofb_par *par = info->par;
1845         unsigned char type, display;
1846         int w;
1847
1848         // Eventually we will have i2c support.
1849         info->monspecs.modedb = kmalloc(sizeof(struct fb_videomode), GFP_KERNEL);
1850         if (!info->monspecs.modedb)
1851                 return -ENOMEM;
1852         info->monspecs.modedb_len = 1;
1853
1854         /* Determine the panel type */
1855         vga_wgfx(NULL, 0x09, 0x26);
1856         type = vga_rgfx(NULL, 0x21);
1857         display = vga_rgfx(NULL, 0x20);
1858         if (!par->internal_display && !par->external_display) {
1859                 par->internal_display = display & 2 || !(display & 3) ? 1 : 0;
1860                 par->external_display = display & 1;
1861                 printk (KERN_INFO "Autodetected %s display\n",
1862                         par->internal_display && par->external_display ? "simultaneous" :
1863                         par->internal_display ? "internal" : "external");
1864         }
1865
1866         /* Determine panel width -- used in NeoValidMode. */
1867         w = vga_rgfx(NULL, 0x20);
1868         vga_wgfx(NULL, 0x09, 0x00);
1869         switch ((w & 0x18) >> 3) {
1870         case 0x00:
1871                 // 640x480@60
1872                 par->NeoPanelWidth = 640;
1873                 par->NeoPanelHeight = 480;
1874                 memcpy(info->monspecs.modedb, &vesa_modes[3], sizeof(struct fb_videomode));
1875                 break;
1876         case 0x01:
1877                 par->NeoPanelWidth = 800;
1878                 if (par->libretto) {
1879                         par->NeoPanelHeight = 480;
1880                         memcpy(info->monspecs.modedb, &mode800x480, sizeof(struct fb_videomode));
1881                 } else {
1882                         // 800x600@60
1883                         par->NeoPanelHeight = 600;
1884                         memcpy(info->monspecs.modedb, &vesa_modes[8], sizeof(struct fb_videomode));
1885                 }
1886                 break;
1887         case 0x02:
1888                 // 1024x768@60
1889                 par->NeoPanelWidth = 1024;
1890                 par->NeoPanelHeight = 768;
1891                 memcpy(info->monspecs.modedb, &vesa_modes[13], sizeof(struct fb_videomode));
1892                 break;
1893         case 0x03:
1894                 /* 1280x1024@60 panel support needs to be added */
1895 #ifdef NOT_DONE
1896                 par->NeoPanelWidth = 1280;
1897                 par->NeoPanelHeight = 1024;
1898                 memcpy(info->monspecs.modedb, &vesa_modes[20], sizeof(struct fb_videomode));
1899                 break;
1900 #else
1901                 printk(KERN_ERR
1902                        "neofb: Only 640x480, 800x600/480 and 1024x768 panels are currently supported\n");
1903                 return -1;
1904 #endif
1905         default:
1906                 // 640x480@60
1907                 par->NeoPanelWidth = 640;
1908                 par->NeoPanelHeight = 480;
1909                 memcpy(info->monspecs.modedb, &vesa_modes[3], sizeof(struct fb_videomode));
1910                 break;
1911         }
1912
1913         printk(KERN_INFO "Panel is a %dx%d %s %s display\n",
1914                par->NeoPanelWidth,
1915                par->NeoPanelHeight,
1916                (type & 0x02) ? "color" : "monochrome",
1917                (type & 0x10) ? "TFT" : "dual scan");
1918         return 0;
1919 }
1920
1921 static int __devinit neo_init_hw(struct fb_info *info)
1922 {
1923         struct neofb_par *par = info->par;
1924         int videoRam = 896;
1925         int maxClock = 65000;
1926         int CursorMem = 1024;
1927         int CursorOff = 0x100;
1928         int linearSize = 1024;
1929         int maxWidth = 1024;
1930         int maxHeight = 1024;
1931
1932         DBG("neo_init_hw");
1933
1934         neoUnlock();
1935
1936 #if 0
1937         printk(KERN_DEBUG "--- Neo extended register dump ---\n");
1938         for (int w = 0; w < 0x85; w++)
1939                 printk(KERN_DEBUG "CR %p: %p\n", (void *) w,
1940                        (void *) vga_rcrt(NULL, w));
1941         for (int w = 0; w < 0xC7; w++)
1942                 printk(KERN_DEBUG "GR %p: %p\n", (void *) w,
1943                        (void *) vga_rgfx(NULL, w));
1944 #endif
1945         switch (info->fix.accel) {
1946         case FB_ACCEL_NEOMAGIC_NM2070:
1947                 videoRam = 896;
1948                 maxClock = 65000;
1949                 CursorMem = 2048;
1950                 CursorOff = 0x100;
1951                 linearSize = 1024;
1952                 maxWidth = 1024;
1953                 maxHeight = 1024;
1954                 break;
1955         case FB_ACCEL_NEOMAGIC_NM2090:
1956         case FB_ACCEL_NEOMAGIC_NM2093:
1957                 videoRam = 1152;
1958                 maxClock = 80000;
1959                 CursorMem = 2048;
1960                 CursorOff = 0x100;
1961                 linearSize = 2048;
1962                 maxWidth = 1024;
1963                 maxHeight = 1024;
1964                 break;
1965         case FB_ACCEL_NEOMAGIC_NM2097:
1966                 videoRam = 1152;
1967                 maxClock = 80000;
1968                 CursorMem = 1024;
1969                 CursorOff = 0x100;
1970                 linearSize = 2048;
1971                 maxWidth = 1024;
1972                 maxHeight = 1024;
1973                 break;
1974         case FB_ACCEL_NEOMAGIC_NM2160:
1975                 videoRam = 2048;
1976                 maxClock = 90000;
1977                 CursorMem = 1024;
1978                 CursorOff = 0x100;
1979                 linearSize = 2048;
1980                 maxWidth = 1024;
1981                 maxHeight = 1024;
1982                 break;
1983         case FB_ACCEL_NEOMAGIC_NM2200:
1984                 videoRam = 2560;
1985                 maxClock = 110000;
1986                 CursorMem = 1024;
1987                 CursorOff = 0x1000;
1988                 linearSize = 4096;
1989                 maxWidth = 1280;
1990                 maxHeight = 1024;       /* ???? */
1991
1992                 par->neo2200 = (Neo2200 __iomem *) par->mmio_vbase;
1993                 break;
1994         case FB_ACCEL_NEOMAGIC_NM2230:
1995                 videoRam = 3008;
1996                 maxClock = 110000;
1997                 CursorMem = 1024;
1998                 CursorOff = 0x1000;
1999                 linearSize = 4096;
2000                 maxWidth = 1280;
2001                 maxHeight = 1024;       /* ???? */
2002
2003                 par->neo2200 = (Neo2200 __iomem *) par->mmio_vbase;
2004                 break;
2005         case FB_ACCEL_NEOMAGIC_NM2360:
2006                 videoRam = 4096;
2007                 maxClock = 110000;
2008                 CursorMem = 1024;
2009                 CursorOff = 0x1000;
2010                 linearSize = 4096;
2011                 maxWidth = 1280;
2012                 maxHeight = 1024;       /* ???? */
2013
2014                 par->neo2200 = (Neo2200 __iomem *) par->mmio_vbase;
2015                 break;
2016         case FB_ACCEL_NEOMAGIC_NM2380:
2017                 videoRam = 6144;
2018                 maxClock = 110000;
2019                 CursorMem = 1024;
2020                 CursorOff = 0x1000;
2021                 linearSize = 8192;
2022                 maxWidth = 1280;
2023                 maxHeight = 1024;       /* ???? */
2024
2025                 par->neo2200 = (Neo2200 __iomem *) par->mmio_vbase;
2026                 break;
2027         }
2028 /*
2029         info->sprite.size = CursorMem;
2030         info->sprite.scan_align = 1;
2031         info->sprite.buf_align = 1;
2032         info->sprite.flags = FB_PIXMAP_IO;
2033         info->sprite.outbuf = neofb_draw_cursor;
2034 */
2035         par->maxClock = maxClock;
2036         par->cursorOff = CursorOff;
2037         return ((videoRam * 1024));
2038 }
2039
2040
2041 static struct fb_info *__devinit neo_alloc_fb_info(struct pci_dev *dev, const struct
2042                                                    pci_device_id *id)
2043 {
2044         struct fb_info *info;
2045         struct neofb_par *par;
2046
2047         info = framebuffer_alloc(sizeof(struct neofb_par), &dev->dev);
2048
2049         if (!info)
2050                 return NULL;
2051
2052         par = info->par;
2053
2054         info->fix.accel = id->driver_data;
2055
2056         mutex_init(&par->open_lock);
2057         par->pci_burst = !nopciburst;
2058         par->lcd_stretch = !nostretch;
2059         par->libretto = libretto;
2060
2061         par->internal_display = internal;
2062         par->external_display = external;
2063         info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
2064
2065         switch (info->fix.accel) {
2066         case FB_ACCEL_NEOMAGIC_NM2070:
2067                 sprintf(info->fix.id, "MagicGraph 128");
2068                 break;
2069         case FB_ACCEL_NEOMAGIC_NM2090:
2070                 sprintf(info->fix.id, "MagicGraph 128V");
2071                 break;
2072         case FB_ACCEL_NEOMAGIC_NM2093:
2073                 sprintf(info->fix.id, "MagicGraph 128ZV");
2074                 break;
2075         case FB_ACCEL_NEOMAGIC_NM2097:
2076                 sprintf(info->fix.id, "MagicGraph 128ZV+");
2077                 break;
2078         case FB_ACCEL_NEOMAGIC_NM2160:
2079                 sprintf(info->fix.id, "MagicGraph 128XD");
2080                 break;
2081         case FB_ACCEL_NEOMAGIC_NM2200:
2082                 sprintf(info->fix.id, "MagicGraph 256AV");
2083                 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2084                                FBINFO_HWACCEL_COPYAREA |
2085                                FBINFO_HWACCEL_FILLRECT;
2086                 break;
2087         case FB_ACCEL_NEOMAGIC_NM2230:
2088                 sprintf(info->fix.id, "MagicGraph 256AV+");
2089                 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2090                                FBINFO_HWACCEL_COPYAREA |
2091                                FBINFO_HWACCEL_FILLRECT;
2092                 break;
2093         case FB_ACCEL_NEOMAGIC_NM2360:
2094                 sprintf(info->fix.id, "MagicGraph 256ZX");
2095                 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2096                                FBINFO_HWACCEL_COPYAREA |
2097                                FBINFO_HWACCEL_FILLRECT;
2098                 break;
2099         case FB_ACCEL_NEOMAGIC_NM2380:
2100                 sprintf(info->fix.id, "MagicGraph 256XL+");
2101                 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2102                                FBINFO_HWACCEL_COPYAREA |
2103                                FBINFO_HWACCEL_FILLRECT;
2104                 break;
2105         }
2106
2107         info->fix.type = FB_TYPE_PACKED_PIXELS;
2108         info->fix.type_aux = 0;
2109         info->fix.xpanstep = 0;
2110         info->fix.ypanstep = 4;
2111         info->fix.ywrapstep = 0;
2112         info->fix.accel = id->driver_data;
2113
2114         info->fbops = &neofb_ops;
2115         info->pseudo_palette = par->palette;
2116         return info;
2117 }
2118
2119 static void neo_free_fb_info(struct fb_info *info)
2120 {
2121         if (info) {
2122                 /*
2123                  * Free the colourmap
2124                  */
2125                 fb_dealloc_cmap(&info->cmap);
2126                 framebuffer_release(info);
2127         }
2128 }
2129
2130 /* --------------------------------------------------------------------- */
2131
2132 static int __devinit neofb_probe(struct pci_dev *dev,
2133                                  const struct pci_device_id *id)
2134 {
2135         struct fb_info *info;
2136         u_int h_sync, v_sync;
2137         int video_len, err;
2138
2139         DBG("neofb_probe");
2140
2141         err = pci_enable_device(dev);
2142         if (err)
2143                 return err;
2144
2145         err = -ENOMEM;
2146         info = neo_alloc_fb_info(dev, id);
2147         if (!info)
2148                 return err;
2149
2150         err = neo_map_mmio(info, dev);
2151         if (err)
2152                 goto err_map_mmio;
2153
2154         err = neo_scan_monitor(info);
2155         if (err)
2156                 goto err_scan_monitor;
2157
2158         video_len = neo_init_hw(info);
2159         if (video_len < 0) {
2160                 err = video_len;
2161                 goto err_init_hw;
2162         }
2163
2164         err = neo_map_video(info, dev, video_len);
2165         if (err)
2166                 goto err_init_hw;
2167
2168         if (!fb_find_mode(&info->var, info, mode_option, NULL, 0,
2169                         info->monspecs.modedb, 16)) {
2170                 printk(KERN_ERR "neofb: Unable to find usable video mode.\n");
2171                 goto err_map_video;
2172         }
2173
2174         /*
2175          * Calculate the hsync and vsync frequencies.  Note that
2176          * we split the 1e12 constant up so that we can preserve
2177          * the precision and fit the results into 32-bit registers.
2178          *  (1953125000 * 512 = 1e12)
2179          */
2180         h_sync = 1953125000 / info->var.pixclock;
2181         h_sync =
2182             h_sync * 512 / (info->var.xres + info->var.left_margin +
2183                             info->var.right_margin + info->var.hsync_len);
2184         v_sync =
2185             h_sync / (info->var.yres + info->var.upper_margin +
2186                       info->var.lower_margin + info->var.vsync_len);
2187
2188         printk(KERN_INFO "neofb v" NEOFB_VERSION
2189                ": %dkB VRAM, using %dx%d, %d.%03dkHz, %dHz\n",
2190                info->fix.smem_len >> 10, info->var.xres,
2191                info->var.yres, h_sync / 1000, h_sync % 1000, v_sync);
2192
2193         if (fb_alloc_cmap(&info->cmap, 256, 0) < 0)
2194                 goto err_map_video;
2195
2196         err = register_framebuffer(info);
2197         if (err < 0)
2198                 goto err_reg_fb;
2199
2200         printk(KERN_INFO "fb%d: %s frame buffer device\n",
2201                info->node, info->fix.id);
2202
2203         /*
2204          * Our driver data
2205          */
2206         pci_set_drvdata(dev, info);
2207         return 0;
2208
2209 err_reg_fb:
2210         fb_dealloc_cmap(&info->cmap);
2211 err_map_video:
2212         neo_unmap_video(info);
2213 err_init_hw:
2214         fb_destroy_modedb(info->monspecs.modedb);
2215 err_scan_monitor:
2216         neo_unmap_mmio(info);
2217 err_map_mmio:
2218         neo_free_fb_info(info);
2219         return err;
2220 }
2221
2222 static void __devexit neofb_remove(struct pci_dev *dev)
2223 {
2224         struct fb_info *info = pci_get_drvdata(dev);
2225
2226         DBG("neofb_remove");
2227
2228         if (info) {
2229                 /*
2230                  * If unregister_framebuffer fails, then
2231                  * we will be leaving hooks that could cause
2232                  * oopsen laying around.
2233                  */
2234                 if (unregister_framebuffer(info))
2235                         printk(KERN_WARNING
2236                                "neofb: danger danger!  Oopsen imminent!\n");
2237
2238                 neo_unmap_video(info);
2239                 fb_destroy_modedb(info->monspecs.modedb);
2240                 neo_unmap_mmio(info);
2241                 neo_free_fb_info(info);
2242
2243                 /*
2244                  * Ensure that the driver data is no longer
2245                  * valid.
2246                  */
2247                 pci_set_drvdata(dev, NULL);
2248         }
2249 }
2250
2251 static struct pci_device_id neofb_devices[] = {
2252         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2070,
2253          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2070},
2254
2255         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2090,
2256          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2090},
2257
2258         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2093,
2259          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2093},
2260
2261         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2097,
2262          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2097},
2263
2264         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2160,
2265          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2160},
2266
2267         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2200,
2268          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2200},
2269
2270         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2230,
2271          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2230},
2272
2273         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2360,
2274          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2360},
2275
2276         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2380,
2277          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2380},
2278
2279         {0, 0, 0, 0, 0, 0, 0}
2280 };
2281
2282 MODULE_DEVICE_TABLE(pci, neofb_devices);
2283
2284 static struct pci_driver neofb_driver = {
2285         .name =         "neofb",
2286         .id_table =     neofb_devices,
2287         .probe =        neofb_probe,
2288         .remove =       __devexit_p(neofb_remove)
2289 };
2290
2291 /* ************************* init in-kernel code ************************** */
2292
2293 #ifndef MODULE
2294 static int __init neofb_setup(char *options)
2295 {
2296         char *this_opt;
2297
2298         DBG("neofb_setup");
2299
2300         if (!options || !*options)
2301                 return 0;
2302
2303         while ((this_opt = strsep(&options, ",")) != NULL) {
2304                 if (!*this_opt)
2305                         continue;
2306
2307                 if (!strncmp(this_opt, "internal", 8))
2308                         internal = 1;
2309                 else if (!strncmp(this_opt, "external", 8))
2310                         external = 1;
2311                 else if (!strncmp(this_opt, "nostretch", 9))
2312                         nostretch = 1;
2313                 else if (!strncmp(this_opt, "nopciburst", 10))
2314                         nopciburst = 1;
2315                 else if (!strncmp(this_opt, "libretto", 8))
2316                         libretto = 1;
2317                 else
2318                         mode_option = this_opt;
2319         }
2320         return 0;
2321 }
2322 #endif  /*  MODULE  */
2323
2324 static int __init neofb_init(void)
2325 {
2326 #ifndef MODULE
2327         char *option = NULL;
2328
2329         if (fb_get_options("neofb", &option))
2330                 return -ENODEV;
2331         neofb_setup(option);
2332 #endif
2333         return pci_register_driver(&neofb_driver);
2334 }
2335
2336 module_init(neofb_init);
2337
2338 #ifdef MODULE
2339 static void __exit neofb_exit(void)
2340 {
2341         pci_unregister_driver(&neofb_driver);
2342 }
2343
2344 module_exit(neofb_exit);
2345 #endif                          /* MODULE */