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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
  76 #ifdef CONFIG_MTRR
  77 #include <asm/mtrr.h>
  78 #endif
  79
  80 #include <video/vga.h>
  81 #include <video/neomagic.h>
  82
  83 #define NEOFB_VERSION "0.4.2"
  84
  85 /* --------------------------------------------------------------------- */
  86
  87 static int internal;
  88 static int external;
  89 static int libretto;
  90 static int nostretch;
  91 static int nopciburst;
  92 static char *mode_option __devinitdata = NULL;
  93
  94 #ifdef MODULE
  95
  96 MODULE_AUTHOR("(c) 2001-2002  Denis Oliver Kropp <dok@convergence.de>");
  97 MODULE_LICENSE("GPL");
  98 MODULE_DESCRIPTION("FBDev driver for NeoMagic PCI Chips");
  99 module_param(internal, bool, 0);
 100 MODULE_PARM_DESC(internal, "Enable output on internal LCD Display.");
 101 module_param(external, bool, 0);
 102 MODULE_PARM_DESC(external, "Enable output on external CRT.");
 103 module_param(libretto, bool, 0);
 104 MODULE_PARM_DESC(libretto, "Force Libretto 100/110 800x480 LCD.");
 105 module_param(nostretch, bool, 0);
 106 MODULE_PARM_DESC(nostretch,
 107                  "Disable stretching of modes smaller than LCD.");
 108 module_param(nopciburst, bool, 0);
 109 MODULE_PARM_DESC(nopciburst, "Disable PCI burst mode.");
 110 module_param(mode_option, charp, 0);
 111 MODULE_PARM_DESC(mode_option, "Preferred video mode ('640x480-8@60', etc)");
 112
 113 #endif
 114
 115
 116 /* --------------------------------------------------------------------- */
 117
 118 static biosMode bios8[] = {
 119         {320, 240, 0x40},
 120         {300, 400, 0x42},
 121         {640, 400, 0x20},
 122         {640, 480, 0x21},
 123         {800, 600, 0x23},
 124         {1024, 768, 0x25},
 125 };
 126
 127 static biosMode bios16[] = {
 128         {320, 200, 0x2e},
 129         {320, 240, 0x41},
 130         {300, 400, 0x43},
 131         {640, 480, 0x31},
 132         {800, 600, 0x34},
 133         {1024, 768, 0x37},
 134 };
 135
 136 static biosMode bios24[] = {
 137         {640, 480, 0x32},
 138         {800, 600, 0x35},
 139         {1024, 768, 0x38}
 140 };
 141
 142 #ifdef NO_32BIT_SUPPORT_YET
 143 /* FIXME: guessed values, wrong */
 144 static biosMode bios32[] = {
 145         {640, 480, 0x33},
 146         {800, 600, 0x36},
 147         {1024, 768, 0x39}
 148 };
 149 #endif
 150
 151 static inline void write_le32(int regindex, u32 val, const struct neofb_par *par)
 152 {
 153         writel(val, par->neo2200 + par->cursorOff + regindex);
 154 }
 155
 156 static int neoFindMode(int xres, int yres, int depth)
 157 {
 158         int xres_s;
 159         int i, size;
 160         biosMode *mode;
 161
 162         switch (depth) {
 163         case 8:
 164                 size = ARRAY_SIZE(bios8);
 165                 mode = bios8;
 166                 break;
 167         case 16:
 168                 size = ARRAY_SIZE(bios16);
 169                 mode = bios16;
 170                 break;
 171         case 24:
 172                 size = ARRAY_SIZE(bios24);
 173                 mode = bios24;
 174                 break;
 175 #ifdef NO_32BIT_SUPPORT_YET
 176         case 32:
 177                 size = ARRAY_SIZE(bios32);
 178                 mode = bios32;
 179                 break;
 180 #endif
 181         default:
 182                 return 0;
 183         }
 184
 185         for (i = 0; i < size; i++) {
 186                 if (xres <= mode[i].x_res) {
 187                         xres_s = mode[i].x_res;
 188                         for (; i < size; i++) {
 189                                 if (mode[i].x_res != xres_s)
 190                                         return mode[i - 1].mode;
 191                                 if (yres <= mode[i].y_res)
 192                                         return mode[i].mode;
 193                         }
 194                 }
 195         }
 196         return mode[size - 1].mode;
 197 }
 198
 199 /*
 200  * neoCalcVCLK --
 201  *
 202  * Determine the closest clock frequency to the one requested.
 203  */
 204 #define MAX_N 127
 205 #define MAX_D 31
 206 #define MAX_F 1
 207
 208 static void neoCalcVCLK(const struct fb_info *info,
 209                         struct neofb_par *par, long freq)
 210 {
 211         int n, d, f;
 212         int n_best = 0, d_best = 0, f_best = 0;
 213         long f_best_diff = 0x7ffff;
 214
 215         for (f = 0; f <= MAX_F; f++)
 216                 for (d = 0; d <= MAX_D; d++)
 217                         for (n = 0; n <= MAX_N; n++) {
 218                                 long f_out;
 219                                 long f_diff;
 220
 221                                 f_out = ((14318 * (n + 1)) / (d + 1)) >> f;
 222                                 f_diff = abs(f_out - freq);
 223                                 if (f_diff <= f_best_diff) {
 224                                         f_best_diff = f_diff;
 225                                         n_best = n;
 226                                         d_best = d;
 227                                         f_best = f;
 228                                 }
 229                                 if (f_out > freq)
 230                                         break;
 231                         }
 232
 233         if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
 234             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
 235             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
 236             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
 237                 /* NOT_DONE:  We are trying the full range of the 2200 clock.
 238                    We should be able to try n up to 2047 */
 239                 par->VCLK3NumeratorLow = n_best;
 240                 par->VCLK3NumeratorHigh = (f_best << 7);
 241         } else
 242                 par->VCLK3NumeratorLow = n_best | (f_best << 7);
 243
 244         par->VCLK3Denominator = d_best;
 245
 246 #ifdef NEOFB_DEBUG
 247         printk(KERN_DEBUG "neoVCLK: f:%ld NumLow=%d NumHi=%d Den=%d Df=%ld\n",
 248                freq,
 249                par->VCLK3NumeratorLow,
 250                par->VCLK3NumeratorHigh,
 251                par->VCLK3Denominator, f_best_diff);
 252 #endif
 253 }
 254
 255 /*
 256  * vgaHWInit --
 257  *      Handle the initialization, etc. of a screen.
 258  *      Return FALSE on failure.
 259  */
 260
 261 static int vgaHWInit(const struct fb_var_screeninfo *var,
 262                      struct neofb_par *par)
 263 {
 264         int hsync_end = var->xres + var->right_margin + var->hsync_len;
 265         int htotal = (hsync_end + var->left_margin) >> 3;
 266         int vsync_start = var->yres + var->lower_margin;
 267         int vsync_end = vsync_start + var->vsync_len;
 268         int vtotal = vsync_end + var->upper_margin;
 269
 270         par->MiscOutReg = 0x23;
 271
 272         if (!(var->sync & FB_SYNC_HOR_HIGH_ACT))
 273                 par->MiscOutReg |= 0x40;
 274
 275         if (!(var->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] = htotal - 5;
 291         par->CRTC[1] = (var->xres >> 3) - 1;
 292         par->CRTC[2] = (var->xres >> 3) - 1;
 293         par->CRTC[3] = ((htotal - 1) & 0x1F) | 0x80;
 294         par->CRTC[4] = ((var->xres + var->right_margin) >> 3);
 295         par->CRTC[5] = (((htotal - 1) & 0x20) << 2)
 296             | (((hsync_end >> 3)) & 0x1F);
 297         par->CRTC[6] = (vtotal - 2) & 0xFF;
 298         par->CRTC[7] = (((vtotal - 2) & 0x100) >> 8)
 299             | (((var->yres - 1) & 0x100) >> 7)
 300             | ((vsync_start & 0x100) >> 6)
 301             | (((var->yres - 1) & 0x100) >> 5)
 302             | 0x10 | (((vtotal - 2) & 0x200) >> 4)
 303             | (((var->yres - 1) & 0x200) >> 3)
 304             | ((vsync_start & 0x200) >> 2);
 305         par->CRTC[8] = 0x00;
 306         par->CRTC[9] = (((var->yres - 1) & 0x200) >> 4) | 0x40;
 307
 308         if (var->vmode & FB_VMODE_DOUBLE)
 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] = vsync_start & 0xFF;
 318         par->CRTC[17] = (vsync_end & 0x0F) | 0x20;
 319         par->CRTC[18] = (var->yres - 1) & 0xFF;
 320         par->CRTC[19] = var->xres_virtual >> 4;
 321         par->CRTC[20] = 0x00;
 322         par->CRTC[21] = (var->yres - 1) & 0xFF;
 323         par->CRTC[22] = (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         tmp = vga_rseq(NULL, 0x01);
 430         if (on) {
 431                 /*
 432                  * Turn off screen and disable sequencer.
 433                  */
 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                 vga_wseq(NULL, 0x01, tmp & ~0x20);      /* reenable display */
 443                 vga_wseq(NULL, 0x00, 0x03);             /* clear synchronousreset */
 444
 445                 VGAdisablePalette();
 446         }
 447 }
 448
 449 static void vgaHWRestore(const struct fb_info *info,
 450                          const struct neofb_par *par)
 451 {
 452         int i;
 453
 454         vga_w(NULL, VGA_MIS_W, par->MiscOutReg);
 455
 456         for (i = 1; i < 5; i++)
 457                 vga_wseq(NULL, i, par->Sequencer[i]);
 458
 459         /* Ensure CRTC registers 0-7 are unlocked by clearing bit 7 or CRTC[17] */
 460         vga_wcrt(NULL, 17, par->CRTC[17] & ~0x80);
 461
 462         for (i = 0; i < 25; i++)
 463                 vga_wcrt(NULL, i, par->CRTC[i]);
 464
 465         for (i = 0; i < 9; i++)
 466                 vga_wgfx(NULL, i, par->Graphics[i]);
 467
 468         VGAenablePalette();
 469
 470         for (i = 0; i < 21; i++)
 471                 VGAwATTR(i, par->Attribute[i]);
 472
 473         VGAdisablePalette();
 474 }
 475
 476
 477 /* -------------------- Hardware specific routines ------------------------- */
 478
 479 /*
 480  * Hardware Acceleration for Neo2200+
 481  */
 482 static inline int neo2200_sync(struct fb_info *info)
 483 {
 484         struct neofb_par *par = info->par;
 485
 486         while (readl(&par->neo2200->bltStat) & 1)
 487                 cpu_relax();
 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         if (!par->ref_count) {
 561                 memset(&par->state, 0, sizeof(struct vgastate));
 562                 par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS;
 563                 save_vga(&par->state);
 564         }
 565         par->ref_count++;
 566
 567         return 0;
 568 }
 569
 570 static int
 571 neofb_release(struct fb_info *info, int user)
 572 {
 573         struct neofb_par *par = info->par;
 574
 575         if (!par->ref_count)
 576                 return -EINVAL;
 577
 578         if (par->ref_count == 1) {
 579                 restore_vga(&par->state);
 580         }
 581         par->ref_count--;
 582
 583         return 0;
 584 }
 585
 586 static int
 587 neofb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 588 {
 589         struct neofb_par *par = info->par;
 590         int memlen, vramlen;
 591         int mode_ok = 0;
 592
 593         DBG("neofb_check_var");
 594
 595         if (PICOS2KHZ(var->pixclock) > par->maxClock)
 596                 return -EINVAL;
 597
 598         /* Is the mode larger than the LCD panel? */
 599         if (par->internal_display &&
 600             ((var->xres > par->NeoPanelWidth) ||
 601              (var->yres > par->NeoPanelHeight))) {
 602                 printk(KERN_INFO
 603                        "Mode (%dx%d) larger than the LCD panel (%dx%d)\n",
 604                        var->xres, var->yres, par->NeoPanelWidth,
 605                        par->NeoPanelHeight);
 606                 return -EINVAL;
 607         }
 608
 609         /* Is the mode one of the acceptable sizes? */
 610         if (!par->internal_display)
 611                 mode_ok = 1;
 612         else {
 613                 switch (var->xres) {
 614                 case 1280:
 615                         if (var->yres == 1024)
 616                                 mode_ok = 1;
 617                         break;
 618                 case 1024:
 619                         if (var->yres == 768)
 620                                 mode_ok = 1;
 621                         break;
 622                 case 800:
 623                         if (var->yres == (par->libretto ? 480 : 600))
 624                                 mode_ok = 1;
 625                         break;
 626                 case 640:
 627                         if (var->yres == 480)
 628                                 mode_ok = 1;
 629                         break;
 630                 }
 631         }
 632
 633         if (!mode_ok) {
 634                 printk(KERN_INFO
 635                        "Mode (%dx%d) won't display properly on LCD\n",
 636                        var->xres, var->yres);
 637                 return -EINVAL;
 638         }
 639
 640         var->red.msb_right = 0;
 641         var->green.msb_right = 0;
 642         var->blue.msb_right = 0;
 643         var->transp.msb_right = 0;
 644
 645         var->transp.offset = 0;
 646         var->transp.length = 0;
 647         switch (var->bits_per_pixel) {
 648         case 8:         /* PSEUDOCOLOUR, 256 */
 649                 var->red.offset = 0;
 650                 var->red.length = 8;
 651                 var->green.offset = 0;
 652                 var->green.length = 8;
 653                 var->blue.offset = 0;
 654                 var->blue.length = 8;
 655                 break;
 656
 657         case 16:                /* DIRECTCOLOUR, 64k */
 658                 var->red.offset = 11;
 659                 var->red.length = 5;
 660                 var->green.offset = 5;
 661                 var->green.length = 6;
 662                 var->blue.offset = 0;
 663                 var->blue.length = 5;
 664                 break;
 665
 666         case 24:                /* TRUECOLOUR, 16m */
 667                 var->red.offset = 16;
 668                 var->red.length = 8;
 669                 var->green.offset = 8;
 670                 var->green.length = 8;
 671                 var->blue.offset = 0;
 672                 var->blue.length = 8;
 673                 break;
 674
 675 #ifdef NO_32BIT_SUPPORT_YET
 676         case 32:                /* TRUECOLOUR, 16m */
 677                 var->transp.offset = 24;
 678                 var->transp.length = 8;
 679                 var->red.offset = 16;
 680                 var->red.length = 8;
 681                 var->green.offset = 8;
 682                 var->green.length = 8;
 683                 var->blue.offset = 0;
 684                 var->blue.length = 8;
 685                 break;
 686 #endif
 687         default:
 688                 printk(KERN_WARNING "neofb: no support for %dbpp\n",
 689                        var->bits_per_pixel);
 690                 return -EINVAL;
 691         }
 692
 693         vramlen = info->fix.smem_len;
 694         if (vramlen > 4 * 1024 * 1024)
 695                 vramlen = 4 * 1024 * 1024;
 696
 697         if (var->xres_virtual < var->xres)
 698                 var->xres_virtual = var->xres;
 699
 700         memlen = var->xres_virtual * var->bits_per_pixel * var->yres_virtual >> 3;
 701
 702         if (memlen > vramlen) {
 703                 var->yres_virtual =  vramlen * 8 / (var->xres_virtual *
 704                                         var->bits_per_pixel);
 705                 memlen = var->xres_virtual * var->bits_per_pixel *
 706                                 var->yres_virtual / 8;
 707         }
 708
 709         /* we must round yres/xres down, we already rounded y/xres_virtual up
 710            if it was possible. We should return -EINVAL, but I disagree */
 711         if (var->yres_virtual < var->yres)
 712                 var->yres = var->yres_virtual;
 713         if (var->xoffset + var->xres > var->xres_virtual)
 714                 var->xoffset = var->xres_virtual - var->xres;
 715         if (var->yoffset + var->yres > var->yres_virtual)
 716                 var->yoffset = var->yres_virtual - var->yres;
 717
 718         var->nonstd = 0;
 719         var->height = -1;
 720         var->width = -1;
 721
 722         if (var->bits_per_pixel >= 24 || !par->neo2200)
 723                 var->accel_flags &= ~FB_ACCELF_TEXT;
 724         return 0;
 725 }
 726
 727 static int neofb_set_par(struct fb_info *info)
 728 {
 729         struct neofb_par *par = info->par;
 730         unsigned char temp;
 731         int i, clock_hi = 0;
 732         int lcd_stretch;
 733         int hoffset, voffset;
 734         int vsync_start, vtotal;
 735
 736         DBG("neofb_set_par");
 737
 738         neoUnlock();
 739
 740         vgaHWProtect(1);        /* Blank the screen */
 741
 742         vsync_start = info->var.yres + info->var.lower_margin;
 743         vtotal = vsync_start + info->var.vsync_len + info->var.upper_margin;
 744
 745         /*
 746          * This will allocate the datastructure and initialize all of the
 747          * generic VGA registers.
 748          */
 749
 750         if (vgaHWInit(&info->var, par))
 751                 return -EINVAL;
 752
 753         /*
 754          * The default value assigned by vgaHW.c is 0x41, but this does
 755          * not work for NeoMagic.
 756          */
 757         par->Attribute[16] = 0x01;
 758
 759         switch (info->var.bits_per_pixel) {
 760         case 8:
 761                 par->CRTC[0x13] = info->var.xres_virtual >> 3;
 762                 par->ExtCRTOffset = info->var.xres_virtual >> 11;
 763                 par->ExtColorModeSelect = 0x11;
 764                 break;
 765         case 16:
 766                 par->CRTC[0x13] = info->var.xres_virtual >> 2;
 767                 par->ExtCRTOffset = info->var.xres_virtual >> 10;
 768                 par->ExtColorModeSelect = 0x13;
 769                 break;
 770         case 24:
 771                 par->CRTC[0x13] = (info->var.xres_virtual * 3) >> 3;
 772                 par->ExtCRTOffset = (info->var.xres_virtual * 3) >> 11;
 773                 par->ExtColorModeSelect = 0x14;
 774                 break;
 775 #ifdef NO_32BIT_SUPPORT_YET
 776         case 32:                /* FIXME: guessed values */
 777                 par->CRTC[0x13] = info->var.xres_virtual >> 1;
 778                 par->ExtCRTOffset = info->var.xres_virtual >> 9;
 779                 par->ExtColorModeSelect = 0x15;
 780                 break;
 781 #endif
 782         default:
 783                 break;
 784         }
 785
 786         par->ExtCRTDispAddr = 0x10;
 787
 788         /* Vertical Extension */
 789         par->VerticalExt = (((vtotal - 2) & 0x400) >> 10)
 790             | (((info->var.yres - 1) & 0x400) >> 9)
 791             | (((vsync_start) & 0x400) >> 8)
 792             | (((vsync_start) & 0x400) >> 7);
 793
 794         /* Fast write bursts on unless disabled. */
 795         if (par->pci_burst)
 796                 par->SysIfaceCntl1 = 0x30;
 797         else
 798                 par->SysIfaceCntl1 = 0x00;
 799
 800         par->SysIfaceCntl2 = 0xc0;      /* VESA Bios sets this to 0x80! */
 801
 802         /* Initialize: by default, we want display config register to be read */
 803         par->PanelDispCntlRegRead = 1;
 804
 805         /* Enable any user specified display devices. */
 806         par->PanelDispCntlReg1 = 0x00;
 807         if (par->internal_display)
 808                 par->PanelDispCntlReg1 |= 0x02;
 809         if (par->external_display)
 810                 par->PanelDispCntlReg1 |= 0x01;
 811
 812         /* If the user did not specify any display devices, then... */
 813         if (par->PanelDispCntlReg1 == 0x00) {
 814                 /* Default to internal (i.e., LCD) only. */
 815                 par->PanelDispCntlReg1 = vga_rgfx(NULL, 0x20) & 0x03;
 816         }
 817
 818         /* If we are using a fixed mode, then tell the chip we are. */
 819         switch (info->var.xres) {
 820         case 1280:
 821                 par->PanelDispCntlReg1 |= 0x60;
 822                 break;
 823         case 1024:
 824                 par->PanelDispCntlReg1 |= 0x40;
 825                 break;
 826         case 800:
 827                 par->PanelDispCntlReg1 |= 0x20;
 828                 break;
 829         case 640:
 830         default:
 831                 break;
 832         }
 833
 834         /* Setup shadow register locking. */
 835         switch (par->PanelDispCntlReg1 & 0x03) {
 836         case 0x01:              /* External CRT only mode: */
 837                 par->GeneralLockReg = 0x00;
 838                 /* We need to program the VCLK for external display only mode. */
 839                 par->ProgramVCLK = 1;
 840                 break;
 841         case 0x02:              /* Internal LCD only mode: */
 842         case 0x03:              /* Simultaneous internal/external (LCD/CRT) mode: */
 843                 par->GeneralLockReg = 0x01;
 844                 /* Don't program the VCLK when using the LCD. */
 845                 par->ProgramVCLK = 0;
 846                 break;
 847         }
 848
 849         /*
 850          * If the screen is to be stretched, turn on stretching for the
 851          * various modes.
 852          *
 853          * OPTION_LCD_STRETCH means stretching should be turned off!
 854          */
 855         par->PanelDispCntlReg2 = 0x00;
 856         par->PanelDispCntlReg3 = 0x00;
 857
 858         if (par->lcd_stretch && (par->PanelDispCntlReg1 == 0x02) &&     /* LCD only */
 859             (info->var.xres != par->NeoPanelWidth)) {
 860                 switch (info->var.xres) {
 861                 case 320:       /* Needs testing.  KEM -- 24 May 98 */
 862                 case 400:       /* Needs testing.  KEM -- 24 May 98 */
 863                 case 640:
 864                 case 800:
 865                 case 1024:
 866                         lcd_stretch = 1;
 867                         par->PanelDispCntlReg2 |= 0xC6;
 868                         break;
 869                 default:
 870                         lcd_stretch = 0;
 871                         /* No stretching in these modes. */
 872                 }
 873         } else
 874                 lcd_stretch = 0;
 875
 876         /*
 877          * If the screen is to be centerd, turn on the centering for the
 878          * various modes.
 879          */
 880         par->PanelVertCenterReg1 = 0x00;
 881         par->PanelVertCenterReg2 = 0x00;
 882         par->PanelVertCenterReg3 = 0x00;
 883         par->PanelVertCenterReg4 = 0x00;
 884         par->PanelVertCenterReg5 = 0x00;
 885         par->PanelHorizCenterReg1 = 0x00;
 886         par->PanelHorizCenterReg2 = 0x00;
 887         par->PanelHorizCenterReg3 = 0x00;
 888         par->PanelHorizCenterReg4 = 0x00;
 889         par->PanelHorizCenterReg5 = 0x00;
 890
 891
 892         if (par->PanelDispCntlReg1 & 0x02) {
 893                 if (info->var.xres == par->NeoPanelWidth) {
 894                         /*
 895                          * No centering required when the requested display width
 896                          * equals the panel width.
 897                          */
 898                 } else {
 899                         par->PanelDispCntlReg2 |= 0x01;
 900                         par->PanelDispCntlReg3 |= 0x10;
 901
 902                         /* Calculate the horizontal and vertical offsets. */
 903                         if (!lcd_stretch) {
 904                                 hoffset =
 905                                     ((par->NeoPanelWidth -
 906                                       info->var.xres) >> 4) - 1;
 907                                 voffset =
 908                                     ((par->NeoPanelHeight -
 909                                       info->var.yres) >> 1) - 2;
 910                         } else {
 911                                 /* Stretched modes cannot be centered. */
 912                                 hoffset = 0;
 913                                 voffset = 0;
 914                         }
 915
 916                         switch (info->var.xres) {
 917                         case 320:       /* Needs testing.  KEM -- 24 May 98 */
 918                                 par->PanelHorizCenterReg3 = hoffset;
 919                                 par->PanelVertCenterReg2 = voffset;
 920                                 break;
 921                         case 400:       /* Needs testing.  KEM -- 24 May 98 */
 922                                 par->PanelHorizCenterReg4 = hoffset;
 923                                 par->PanelVertCenterReg1 = voffset;
 924                                 break;
 925                         case 640:
 926                                 par->PanelHorizCenterReg1 = hoffset;
 927                                 par->PanelVertCenterReg3 = voffset;
 928                                 break;
 929                         case 800:
 930                                 par->PanelHorizCenterReg2 = hoffset;
 931                                 par->PanelVertCenterReg4 = voffset;
 932                                 break;
 933                         case 1024:
 934                                 par->PanelHorizCenterReg5 = hoffset;
 935                                 par->PanelVertCenterReg5 = voffset;
 936                                 break;
 937                         case 1280:
 938                         default:
 939                                 /* No centering in these modes. */
 940                                 break;
 941                         }
 942                 }
 943         }
 944
 945         par->biosMode =
 946             neoFindMode(info->var.xres, info->var.yres,
 947                         info->var.bits_per_pixel);
 948
 949         /*
 950          * Calculate the VCLK that most closely matches the requested dot
 951          * clock.
 952          */
 953         neoCalcVCLK(info, par, PICOS2KHZ(info->var.pixclock));
 954
 955         /* Since we program the clocks ourselves, always use VCLK3. */
 956         par->MiscOutReg |= 0x0C;
 957
 958         /* alread unlocked above */
 959         /* BOGUS  vga_wgfx(NULL, 0x09, 0x26); */
 960
 961         /* don't know what this is, but it's 0 from bootup anyway */
 962         vga_wgfx(NULL, 0x15, 0x00);
 963
 964         /* was set to 0x01 by my bios in text and vesa modes */
 965         vga_wgfx(NULL, 0x0A, par->GeneralLockReg);
 966
 967         /*
 968          * The color mode needs to be set before calling vgaHWRestore
 969          * to ensure the DAC is initialized properly.
 970          *
 971          * NOTE: Make sure we don't change bits make sure we don't change
 972          * any reserved bits.
 973          */
 974         temp = vga_rgfx(NULL, 0x90);
 975         switch (info->fix.accel) {
 976         case FB_ACCEL_NEOMAGIC_NM2070:
 977                 temp &= 0xF0;   /* Save bits 7:4 */
 978                 temp |= (par->ExtColorModeSelect & ~0xF0);
 979                 break;
 980         case FB_ACCEL_NEOMAGIC_NM2090:
 981         case FB_ACCEL_NEOMAGIC_NM2093:
 982         case FB_ACCEL_NEOMAGIC_NM2097:
 983         case FB_ACCEL_NEOMAGIC_NM2160:
 984         case FB_ACCEL_NEOMAGIC_NM2200:
 985         case FB_ACCEL_NEOMAGIC_NM2230:
 986         case FB_ACCEL_NEOMAGIC_NM2360:
 987         case FB_ACCEL_NEOMAGIC_NM2380:
 988                 temp &= 0x70;   /* Save bits 6:4 */
 989                 temp |= (par->ExtColorModeSelect & ~0x70);
 990                 break;
 991         }
 992
 993         vga_wgfx(NULL, 0x90, temp);
 994
 995         /*
 996          * In some rare cases a lockup might occur if we don't delay
 997          * here. (Reported by Miles Lane)
 998          */
 999         //mdelay(200);
1000
1001         /*
1002          * Disable horizontal and vertical graphics and text expansions so
1003          * that vgaHWRestore works properly.
1004          */
1005         temp = vga_rgfx(NULL, 0x25);
1006         temp &= 0x39;
1007         vga_wgfx(NULL, 0x25, temp);
1008
1009         /*
1010          * Sleep for 200ms to make sure that the two operations above have
1011          * had time to take effect.
1012          */
1013         mdelay(200);
1014
1015         /*
1016          * This function handles restoring the generic VGA registers.  */
1017         vgaHWRestore(info, par);
1018
1019         /* linear colormap for non palettized modes */
1020         switch (info->var.bits_per_pixel) {
1021         case 8:
1022                 /* PseudoColor, 256 */
1023                 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
1024                 break;
1025         case 16:
1026                 /* TrueColor, 64k */
1027                 info->fix.visual = FB_VISUAL_TRUECOLOR;
1028
1029                 for (i = 0; i < 64; i++) {
1030                         outb(i, 0x3c8);
1031
1032                         outb(i << 1, 0x3c9);
1033                         outb(i, 0x3c9);
1034                         outb(i << 1, 0x3c9);
1035                 }
1036                 break;
1037         case 24:
1038 #ifdef NO_32BIT_SUPPORT_YET
1039         case 32:
1040 #endif
1041                 /* TrueColor, 16m */
1042                 info->fix.visual = FB_VISUAL_TRUECOLOR;
1043
1044                 for (i = 0; i < 256; i++) {
1045                         outb(i, 0x3c8);
1046
1047                         outb(i, 0x3c9);
1048                         outb(i, 0x3c9);
1049                         outb(i, 0x3c9);
1050                 }
1051                 break;
1052         }
1053
1054         vga_wgfx(NULL, 0x0E, par->ExtCRTDispAddr);
1055         vga_wgfx(NULL, 0x0F, par->ExtCRTOffset);
1056         temp = vga_rgfx(NULL, 0x10);
1057         temp &= 0x0F;           /* Save bits 3:0 */
1058         temp |= (par->SysIfaceCntl1 & ~0x0F);   /* VESA Bios sets bit 1! */
1059         vga_wgfx(NULL, 0x10, temp);
1060
1061         vga_wgfx(NULL, 0x11, par->SysIfaceCntl2);
1062         vga_wgfx(NULL, 0x15, 0 /*par->SingleAddrPage */ );
1063         vga_wgfx(NULL, 0x16, 0 /*par->DualAddrPage */ );
1064
1065         temp = vga_rgfx(NULL, 0x20);
1066         switch (info->fix.accel) {
1067         case FB_ACCEL_NEOMAGIC_NM2070:
1068                 temp &= 0xFC;   /* Save bits 7:2 */
1069                 temp |= (par->PanelDispCntlReg1 & ~0xFC);
1070                 break;
1071         case FB_ACCEL_NEOMAGIC_NM2090:
1072         case FB_ACCEL_NEOMAGIC_NM2093:
1073         case FB_ACCEL_NEOMAGIC_NM2097:
1074         case FB_ACCEL_NEOMAGIC_NM2160:
1075                 temp &= 0xDC;   /* Save bits 7:6,4:2 */
1076                 temp |= (par->PanelDispCntlReg1 & ~0xDC);
1077                 break;
1078         case FB_ACCEL_NEOMAGIC_NM2200:
1079         case FB_ACCEL_NEOMAGIC_NM2230:
1080         case FB_ACCEL_NEOMAGIC_NM2360:
1081         case FB_ACCEL_NEOMAGIC_NM2380:
1082                 temp &= 0x98;   /* Save bits 7,4:3 */
1083                 temp |= (par->PanelDispCntlReg1 & ~0x98);
1084                 break;
1085         }
1086         vga_wgfx(NULL, 0x20, temp);
1087
1088         temp = vga_rgfx(NULL, 0x25);
1089         temp &= 0x38;           /* Save bits 5:3 */
1090         temp |= (par->PanelDispCntlReg2 & ~0x38);
1091         vga_wgfx(NULL, 0x25, temp);
1092
1093         if (info->fix.accel != FB_ACCEL_NEOMAGIC_NM2070) {
1094                 temp = vga_rgfx(NULL, 0x30);
1095                 temp &= 0xEF;   /* Save bits 7:5 and bits 3:0 */
1096                 temp |= (par->PanelDispCntlReg3 & ~0xEF);
1097                 vga_wgfx(NULL, 0x30, temp);
1098         }
1099
1100         vga_wgfx(NULL, 0x28, par->PanelVertCenterReg1);
1101         vga_wgfx(NULL, 0x29, par->PanelVertCenterReg2);
1102         vga_wgfx(NULL, 0x2a, par->PanelVertCenterReg3);
1103
1104         if (info->fix.accel != FB_ACCEL_NEOMAGIC_NM2070) {
1105                 vga_wgfx(NULL, 0x32, par->PanelVertCenterReg4);
1106                 vga_wgfx(NULL, 0x33, par->PanelHorizCenterReg1);
1107                 vga_wgfx(NULL, 0x34, par->PanelHorizCenterReg2);
1108                 vga_wgfx(NULL, 0x35, par->PanelHorizCenterReg3);
1109         }
1110
1111         if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2160)
1112                 vga_wgfx(NULL, 0x36, par->PanelHorizCenterReg4);
1113
1114         if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
1115             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
1116             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
1117             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
1118                 vga_wgfx(NULL, 0x36, par->PanelHorizCenterReg4);
1119                 vga_wgfx(NULL, 0x37, par->PanelVertCenterReg5);
1120                 vga_wgfx(NULL, 0x38, par->PanelHorizCenterReg5);
1121
1122                 clock_hi = 1;
1123         }
1124
1125         /* Program VCLK3 if needed. */
1126         if (par->ProgramVCLK && ((vga_rgfx(NULL, 0x9B) != par->VCLK3NumeratorLow)
1127                                  || (vga_rgfx(NULL, 0x9F) != par->VCLK3Denominator)
1128                                  || (clock_hi && ((vga_rgfx(NULL, 0x8F) & ~0x0f)
1129                                                   != (par->VCLK3NumeratorHigh &
1130                                                       ~0x0F))))) {
1131                 vga_wgfx(NULL, 0x9B, par->VCLK3NumeratorLow);
1132                 if (clock_hi) {
1133                         temp = vga_rgfx(NULL, 0x8F);
1134                         temp &= 0x0F;   /* Save bits 3:0 */
1135                         temp |= (par->VCLK3NumeratorHigh & ~0x0F);
1136                         vga_wgfx(NULL, 0x8F, temp);
1137                 }
1138                 vga_wgfx(NULL, 0x9F, par->VCLK3Denominator);
1139         }
1140
1141         if (par->biosMode)
1142                 vga_wcrt(NULL, 0x23, par->biosMode);
1143
1144         vga_wgfx(NULL, 0x93, 0xc0);     /* Gives 5x faster framebuffer writes !!! */
1145
1146         /* Program vertical extension register */
1147         if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
1148             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
1149             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
1150             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
1151                 vga_wcrt(NULL, 0x70, par->VerticalExt);
1152         }
1153
1154         vgaHWProtect(0);        /* Turn on screen */
1155
1156         /* Calling this also locks offset registers required in update_start */
1157         neoLock(&par->state);
1158
1159         info->fix.line_length =
1160             info->var.xres_virtual * (info->var.bits_per_pixel >> 3);
1161
1162         switch (info->fix.accel) {
1163                 case FB_ACCEL_NEOMAGIC_NM2200:
1164                 case FB_ACCEL_NEOMAGIC_NM2230:
1165                 case FB_ACCEL_NEOMAGIC_NM2360:
1166                 case FB_ACCEL_NEOMAGIC_NM2380:
1167                         neo2200_accel_init(info, &info->var);
1168                         break;
1169                 default:
1170                         break;
1171         }
1172         return 0;
1173 }
1174
1175 /*
1176  *    Pan or Wrap the Display
1177  */
1178 static int neofb_pan_display(struct fb_var_screeninfo *var,
1179                              struct fb_info *info)
1180 {
1181         struct neofb_par *par = info->par;
1182         struct vgastate *state = &par->state;
1183         int oldExtCRTDispAddr;
1184         int Base;
1185
1186         DBG("neofb_update_start");
1187
1188         Base = (var->yoffset * var->xres_virtual + var->xoffset) >> 2;
1189         Base *= (var->bits_per_pixel + 7) / 8;
1190
1191         neoUnlock();
1192
1193         /*
1194          * These are the generic starting address registers.
1195          */
1196         vga_wcrt(state->vgabase, 0x0C, (Base & 0x00FF00) >> 8);
1197         vga_wcrt(state->vgabase, 0x0D, (Base & 0x00FF));
1198
1199         /*
1200          * Make sure we don't clobber some other bits that might already
1201          * have been set. NOTE: NM2200 has a writable bit 3, but it shouldn't
1202          * be needed.
1203          */
1204         oldExtCRTDispAddr = vga_rgfx(NULL, 0x0E);
1205         vga_wgfx(state->vgabase, 0x0E, (((Base >> 16) & 0x0f) | (oldExtCRTDispAddr & 0xf0)));
1206
1207         neoLock(state);
1208
1209         return 0;
1210 }
1211
1212 static int neofb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1213                            u_int transp, struct fb_info *fb)
1214 {
1215         if (regno >= fb->cmap.len || regno > 255)
1216                 return -EINVAL;
1217
1218         if (fb->var.bits_per_pixel <= 8) {
1219                 outb(regno, 0x3c8);
1220
1221                 outb(red >> 10, 0x3c9);
1222                 outb(green >> 10, 0x3c9);
1223                 outb(blue >> 10, 0x3c9);
1224         } else if (regno < 16) {
1225                 switch (fb->var.bits_per_pixel) {
1226                 case 16:
1227                         ((u32 *) fb->pseudo_palette)[regno] =
1228                                 ((red & 0xf800)) | ((green & 0xfc00) >> 5) |
1229                                 ((blue & 0xf800) >> 11);
1230                         break;
1231                 case 24:
1232                         ((u32 *) fb->pseudo_palette)[regno] =
1233                                 ((red & 0xff00) << 8) | ((green & 0xff00)) |
1234                                 ((blue & 0xff00) >> 8);
1235                         break;
1236 #ifdef NO_32BIT_SUPPORT_YET
1237                 case 32:
1238                         ((u32 *) fb->pseudo_palette)[regno] =
1239                                 ((transp & 0xff00) << 16) | ((red & 0xff00) << 8) |
1240                                 ((green & 0xff00)) | ((blue & 0xff00) >> 8);
1241                         break;
1242 #endif
1243                 default:
1244                         return 1;
1245                 }
1246         }
1247
1248         return 0;
1249 }
1250
1251 /*
1252  *    (Un)Blank the display.
1253  */
1254 static int neofb_blank(int blank_mode, struct fb_info *info)
1255 {
1256         /*
1257          *  Blank the screen if blank_mode != 0, else unblank.
1258          *  Return 0 if blanking succeeded, != 0 if un-/blanking failed due to
1259          *  e.g. a video mode which doesn't support it. Implements VESA suspend
1260          *  and powerdown modes for monitors, and backlight control on LCDs.
1261          *    blank_mode == 0: unblanked (backlight on)
1262          *    blank_mode == 1: blank (backlight on)
1263          *    blank_mode == 2: suspend vsync (backlight off)
1264          *    blank_mode == 3: suspend hsync (backlight off)
1265          *    blank_mode == 4: powerdown (backlight off)
1266          *
1267          *  wms...Enable VESA DPMS compatible powerdown mode
1268          *  run "setterm -powersave powerdown" to take advantage
1269          */
1270         struct neofb_par *par = info->par;
1271         int seqflags, lcdflags, dpmsflags, reg, tmpdisp;
1272
1273         /*
1274          * Read back the register bits related to display configuration. They might
1275          * have been changed underneath the driver via Fn key stroke.
1276          */
1277         neoUnlock();
1278         tmpdisp = vga_rgfx(NULL, 0x20) & 0x03;
1279         neoLock(&par->state);
1280
1281         /* In case we blank the screen, we want to store the possibly new
1282          * configuration in the driver. During un-blank, we re-apply this setting,
1283          * since the LCD bit will be cleared in order to switch off the backlight.
1284          */
1285         if (par->PanelDispCntlRegRead) {
1286                 par->PanelDispCntlReg1 = tmpdisp;
1287         }
1288         par->PanelDispCntlRegRead = !blank_mode;
1289
1290         switch (blank_mode) {
1291         case FB_BLANK_POWERDOWN:        /* powerdown - both sync lines down */
1292                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1293                 lcdflags = 0;                   /* LCD off */
1294                 dpmsflags = NEO_GR01_SUPPRESS_HSYNC |
1295                             NEO_GR01_SUPPRESS_VSYNC;
1296 #ifdef CONFIG_TOSHIBA
1297                 /* Do we still need this ? */
1298                 /* attempt to turn off backlight on toshiba; also turns off external */
1299                 {
1300                         SMMRegisters regs;
1301
1302                         regs.eax = 0xff00; /* HCI_SET */
1303                         regs.ebx = 0x0002; /* HCI_BACKLIGHT */
1304                         regs.ecx = 0x0000; /* HCI_DISABLE */
1305                         tosh_smm(&regs);
1306                 }
1307 #endif
1308                 break;
1309         case FB_BLANK_HSYNC_SUSPEND:            /* hsync off */
1310                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1311                 lcdflags = 0;                   /* LCD off */
1312                 dpmsflags = NEO_GR01_SUPPRESS_HSYNC;
1313                 break;
1314         case FB_BLANK_VSYNC_SUSPEND:            /* vsync off */
1315                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1316                 lcdflags = 0;                   /* LCD off */
1317                 dpmsflags = NEO_GR01_SUPPRESS_VSYNC;
1318                 break;
1319         case FB_BLANK_NORMAL:           /* just blank screen (backlight stays on) */
1320                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1321                 /*
1322                  * During a blank operation with the LID shut, we might store "LCD off"
1323                  * by mistake. Due to timing issues, the BIOS may switch the lights
1324                  * back on, and we turn it back off once we "unblank".
1325                  *
1326                  * So here is an attempt to implement ">=" - if we are in the process
1327                  * of unblanking, and the LCD bit is unset in the driver but set in the
1328                  * register, we must keep it.
1329                  */
1330                 lcdflags = ((par->PanelDispCntlReg1 | tmpdisp) & 0x02); /* LCD normal */
1331                 dpmsflags = 0x00;       /* no hsync/vsync suppression */
1332                 break;
1333         case FB_BLANK_UNBLANK:          /* unblank */
1334                 seqflags = 0;                   /* Enable sequencer */
1335                 lcdflags = ((par->PanelDispCntlReg1 | tmpdisp) & 0x02); /* LCD normal */
1336                 dpmsflags = 0x00;       /* no hsync/vsync suppression */
1337 #ifdef CONFIG_TOSHIBA
1338                 /* Do we still need this ? */
1339                 /* attempt to re-enable backlight/external on toshiba */
1340                 {
1341                         SMMRegisters regs;
1342
1343                         regs.eax = 0xff00; /* HCI_SET */
1344                         regs.ebx = 0x0002; /* HCI_BACKLIGHT */
1345                         regs.ecx = 0x0001; /* HCI_ENABLE */
1346                         tosh_smm(&regs);
1347                 }
1348 #endif
1349                 break;
1350         default:        /* Anything else we don't understand; return 1 to tell
1351                          * fb_blank we didn't aactually do anything */
1352                 return 1;
1353         }
1354
1355         neoUnlock();
1356         reg = (vga_rseq(NULL, 0x01) & ~0x20) | seqflags;
1357         vga_wseq(NULL, 0x01, reg);
1358         reg = (vga_rgfx(NULL, 0x20) & ~0x02) | lcdflags;
1359         vga_wgfx(NULL, 0x20, reg);
1360         reg = (vga_rgfx(NULL, 0x01) & ~0xF0) | 0x80 | dpmsflags;
1361         vga_wgfx(NULL, 0x01, reg);
1362         neoLock(&par->state);
1363         return 0;
1364 }
1365
1366 static void
1367 neo2200_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
1368 {
1369         struct neofb_par *par = info->par;
1370         u_long dst, rop;
1371
1372         dst = rect->dx + rect->dy * info->var.xres_virtual;
1373         rop = rect->rop ? 0x060000 : 0x0c0000;
1374
1375         neo2200_wait_fifo(info, 4);
1376
1377         /* set blt control */
1378         writel(NEO_BC3_FIFO_EN |
1379                NEO_BC0_SRC_IS_FG | NEO_BC3_SKIP_MAPPING |
1380                //               NEO_BC3_DST_XY_ADDR  |
1381                //               NEO_BC3_SRC_XY_ADDR  |
1382                rop, &par->neo2200->bltCntl);
1383
1384         switch (info->var.bits_per_pixel) {
1385         case 8:
1386                 writel(rect->color, &par->neo2200->fgColor);
1387                 break;
1388         case 16:
1389         case 24:
1390                 writel(((u32 *) (info->pseudo_palette))[rect->color],
1391                        &par->neo2200->fgColor);
1392                 break;
1393         }
1394
1395         writel(dst * ((info->var.bits_per_pixel + 7) >> 3),
1396                &par->neo2200->dstStart);
1397         writel((rect->height << 16) | (rect->width & 0xffff),
1398                &par->neo2200->xyExt);
1399 }
1400
1401 static void
1402 neo2200_copyarea(struct fb_info *info, const struct fb_copyarea *area)
1403 {
1404         u32 sx = area->sx, sy = area->sy, dx = area->dx, dy = area->dy;
1405         struct neofb_par *par = info->par;
1406         u_long src, dst, bltCntl;
1407
1408         bltCntl = NEO_BC3_FIFO_EN | NEO_BC3_SKIP_MAPPING | 0x0C0000;
1409
1410         if ((dy > sy) || ((dy == sy) && (dx > sx))) {
1411                 /* Start with the lower right corner */
1412                 sy += (area->height - 1);
1413                 dy += (area->height - 1);
1414                 sx += (area->width - 1);
1415                 dx += (area->width - 1);
1416
1417                 bltCntl |= NEO_BC0_X_DEC | NEO_BC0_DST_Y_DEC | NEO_BC0_SRC_Y_DEC;
1418         }
1419
1420         src = sx * (info->var.bits_per_pixel >> 3) + sy*info->fix.line_length;
1421         dst = dx * (info->var.bits_per_pixel >> 3) + dy*info->fix.line_length;
1422
1423         neo2200_wait_fifo(info, 4);
1424
1425         /* set blt control */
1426         writel(bltCntl, &par->neo2200->bltCntl);
1427
1428         writel(src, &par->neo2200->srcStart);
1429         writel(dst, &par->neo2200->dstStart);
1430         writel((area->height << 16) | (area->width & 0xffff),
1431                &par->neo2200->xyExt);
1432 }
1433
1434 static void
1435 neo2200_imageblit(struct fb_info *info, const struct fb_image *image)
1436 {
1437         struct neofb_par *par = info->par;
1438         int s_pitch = (image->width * image->depth + 7) >> 3;
1439         int scan_align = info->pixmap.scan_align - 1;
1440         int buf_align = info->pixmap.buf_align - 1;
1441         int bltCntl_flags, d_pitch, data_len;
1442
1443         // The data is padded for the hardware
1444         d_pitch = (s_pitch + scan_align) & ~scan_align;
1445         data_len = ((d_pitch * image->height) + buf_align) & ~buf_align;
1446
1447         neo2200_sync(info);
1448
1449         if (image->depth == 1) {
1450                 if (info->var.bits_per_pixel == 24 && image->width < 16) {
1451                         /* FIXME. There is a bug with accelerated color-expanded
1452                          * transfers in 24 bit mode if the image being transferred
1453                          * is less than 16 bits wide. This is due to insufficient
1454                          * padding when writing the image. We need to adjust
1455                          * struct fb_pixmap. Not yet done. */
1456                         cfb_imageblit(info, image);
1457                         return;
1458                 }
1459                 bltCntl_flags = NEO_BC0_SRC_MONO;
1460         } else if (image->depth == info->var.bits_per_pixel) {
1461                 bltCntl_flags = 0;
1462         } else {
1463                 /* We don't currently support hardware acceleration if image
1464                  * depth is different from display */
1465                 cfb_imageblit(info, image);
1466                 return;
1467         }
1468
1469         switch (info->var.bits_per_pixel) {
1470         case 8:
1471                 writel(image->fg_color, &par->neo2200->fgColor);
1472                 writel(image->bg_color, &par->neo2200->bgColor);
1473                 break;
1474         case 16:
1475         case 24:
1476                 writel(((u32 *) (info->pseudo_palette))[image->fg_color],
1477                        &par->neo2200->fgColor);
1478                 writel(((u32 *) (info->pseudo_palette))[image->bg_color],
1479                        &par->neo2200->bgColor);
1480                 break;
1481         }
1482
1483         writel(NEO_BC0_SYS_TO_VID |
1484                 NEO_BC3_SKIP_MAPPING | bltCntl_flags |
1485                 // NEO_BC3_DST_XY_ADDR |
1486                 0x0c0000, &par->neo2200->bltCntl);
1487
1488         writel(0, &par->neo2200->srcStart);
1489 //      par->neo2200->dstStart = (image->dy << 16) | (image->dx & 0xffff);
1490         writel(((image->dx & 0xffff) * (info->var.bits_per_pixel >> 3) +
1491                 image->dy * info->fix.line_length), &par->neo2200->dstStart);
1492         writel((image->height << 16) | (image->width & 0xffff),
1493                &par->neo2200->xyExt);
1494
1495         memcpy_toio(par->mmio_vbase + 0x100000, image->data, data_len);
1496 }
1497
1498 static void
1499 neofb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
1500 {
1501         switch (info->fix.accel) {
1502                 case FB_ACCEL_NEOMAGIC_NM2200:
1503                 case FB_ACCEL_NEOMAGIC_NM2230:
1504                 case FB_ACCEL_NEOMAGIC_NM2360:
1505                 case FB_ACCEL_NEOMAGIC_NM2380:
1506                         neo2200_fillrect(info, rect);
1507                         break;
1508                 default:
1509                         cfb_fillrect(info, rect);
1510                         break;
1511         }
1512 }
1513
1514 static void
1515 neofb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
1516 {
1517         switch (info->fix.accel) {
1518                 case FB_ACCEL_NEOMAGIC_NM2200:
1519                 case FB_ACCEL_NEOMAGIC_NM2230:
1520                 case FB_ACCEL_NEOMAGIC_NM2360:
1521                 case FB_ACCEL_NEOMAGIC_NM2380:
1522                         neo2200_copyarea(info, area);
1523                         break;
1524                 default:
1525                         cfb_copyarea(info, area);
1526                         break;
1527         }
1528 }
1529
1530 static void
1531 neofb_imageblit(struct fb_info *info, const struct fb_image *image)
1532 {
1533         switch (info->fix.accel) {
1534                 case FB_ACCEL_NEOMAGIC_NM2200:
1535                 case FB_ACCEL_NEOMAGIC_NM2230:
1536                 case FB_ACCEL_NEOMAGIC_NM2360:
1537                 case FB_ACCEL_NEOMAGIC_NM2380:
1538                         neo2200_imageblit(info, image);
1539                         break;
1540                 default:
1541                         cfb_imageblit(info, image);
1542                         break;
1543         }
1544 }
1545
1546 static int
1547 neofb_sync(struct fb_info *info)
1548 {
1549         switch (info->fix.accel) {
1550                 case FB_ACCEL_NEOMAGIC_NM2200:
1551                 case FB_ACCEL_NEOMAGIC_NM2230:
1552                 case FB_ACCEL_NEOMAGIC_NM2360:
1553                 case FB_ACCEL_NEOMAGIC_NM2380:
1554                         neo2200_sync(info);
1555                         break;
1556                 default:
1557                         break;
1558         }
1559         return 0;
1560 }
1561
1562 /*
1563 static void
1564 neofb_draw_cursor(struct fb_info *info, u8 *dst, u8 *src, unsigned int width)
1565 {
1566         //memset_io(info->sprite.addr, 0xff, 1);
1567 }
1568
1569 static int
1570 neofb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1571 {
1572         struct neofb_par *par = (struct neofb_par *) info->par;
1573
1574         * Disable cursor *
1575         write_le32(NEOREG_CURSCNTL, ~NEO_CURS_ENABLE, par);
1576
1577         if (cursor->set & FB_CUR_SETPOS) {
1578                 u32 x = cursor->image.dx;
1579                 u32 y = cursor->image.dy;
1580
1581                 info->cursor.image.dx = x;
1582                 info->cursor.image.dy = y;
1583                 write_le32(NEOREG_CURSX, x, par);
1584                 write_le32(NEOREG_CURSY, y, par);
1585         }
1586
1587         if (cursor->set & FB_CUR_SETSIZE) {
1588                 info->cursor.image.height = cursor->image.height;
1589                 info->cursor.image.width = cursor->image.width;
1590         }
1591
1592         if (cursor->set & FB_CUR_SETHOT)
1593                 info->cursor.hot = cursor->hot;
1594
1595         if (cursor->set & FB_CUR_SETCMAP) {
1596                 if (cursor->image.depth == 1) {
1597                         u32 fg = cursor->image.fg_color;
1598                         u32 bg = cursor->image.bg_color;
1599
1600                         info->cursor.image.fg_color = fg;
1601                         info->cursor.image.bg_color = bg;
1602
1603                         fg = ((fg & 0xff0000) >> 16) | ((fg & 0xff) << 16) | (fg & 0xff00);
1604                         bg = ((bg & 0xff0000) >> 16) | ((bg & 0xff) << 16) | (bg & 0xff00);
1605                         write_le32(NEOREG_CURSFGCOLOR, fg, par);
1606                         write_le32(NEOREG_CURSBGCOLOR, bg, par);
1607                 }
1608         }
1609
1610         if (cursor->set & FB_CUR_SETSHAPE)
1611                 fb_load_cursor_image(info);
1612
1613         if (info->cursor.enable)
1614                 write_le32(NEOREG_CURSCNTL, NEO_CURS_ENABLE, par);
1615         return 0;
1616 }
1617 */
1618
1619 static struct fb_ops neofb_ops = {
1620         .owner          = THIS_MODULE,
1621         .fb_open        = neofb_open,
1622         .fb_release     = neofb_release,
1623         .fb_check_var   = neofb_check_var,
1624         .fb_set_par     = neofb_set_par,
1625         .fb_setcolreg   = neofb_setcolreg,
1626         .fb_pan_display = neofb_pan_display,
1627         .fb_blank       = neofb_blank,
1628         .fb_sync        = neofb_sync,
1629         .fb_fillrect    = neofb_fillrect,
1630         .fb_copyarea    = neofb_copyarea,
1631         .fb_imageblit   = neofb_imageblit,
1632 };
1633
1634 /* --------------------------------------------------------------------- */
1635
1636 static struct fb_videomode __devinitdata mode800x480 = {
1637         .xres           = 800,
1638         .yres           = 480,
1639         .pixclock       = 25000,
1640         .left_margin    = 88,
1641         .right_margin   = 40,
1642         .upper_margin   = 23,
1643         .lower_margin   = 1,
1644         .hsync_len      = 128,
1645         .vsync_len      = 4,
1646         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
1647         .vmode          = FB_VMODE_NONINTERLACED
1648 };
1649
1650 static int __devinit neo_map_mmio(struct fb_info *info,
1651                                   struct pci_dev *dev)
1652 {
1653         struct neofb_par *par = info->par;
1654
1655         DBG("neo_map_mmio");
1656
1657         switch (info->fix.accel) {
1658                 case FB_ACCEL_NEOMAGIC_NM2070:
1659                         info->fix.mmio_start = pci_resource_start(dev, 0)+
1660                                 0x100000;
1661                         break;
1662                 case FB_ACCEL_NEOMAGIC_NM2090:
1663                 case FB_ACCEL_NEOMAGIC_NM2093:
1664                         info->fix.mmio_start = pci_resource_start(dev, 0)+
1665                                 0x200000;
1666                         break;
1667                 case FB_ACCEL_NEOMAGIC_NM2160:
1668                 case FB_ACCEL_NEOMAGIC_NM2097:
1669                 case FB_ACCEL_NEOMAGIC_NM2200:
1670                 case FB_ACCEL_NEOMAGIC_NM2230:
1671                 case FB_ACCEL_NEOMAGIC_NM2360:
1672                 case FB_ACCEL_NEOMAGIC_NM2380:
1673                         info->fix.mmio_start = pci_resource_start(dev, 1);
1674                         break;
1675                 default:
1676                         info->fix.mmio_start = pci_resource_start(dev, 0);
1677         }
1678         info->fix.mmio_len = MMIO_SIZE;
1679
1680         if (!request_mem_region
1681             (info->fix.mmio_start, MMIO_SIZE, "memory mapped I/O")) {
1682                 printk("neofb: memory mapped IO in use\n");
1683                 return -EBUSY;
1684         }
1685
1686         par->mmio_vbase = ioremap(info->fix.mmio_start, MMIO_SIZE);
1687         if (!par->mmio_vbase) {
1688                 printk("neofb: unable to map memory mapped IO\n");
1689                 release_mem_region(info->fix.mmio_start,
1690                                    info->fix.mmio_len);
1691                 return -ENOMEM;
1692         } else
1693                 printk(KERN_INFO "neofb: mapped io at %p\n",
1694                        par->mmio_vbase);
1695         return 0;
1696 }
1697
1698 static void neo_unmap_mmio(struct fb_info *info)
1699 {
1700         struct neofb_par *par = info->par;
1701
1702         DBG("neo_unmap_mmio");
1703
1704         iounmap(par->mmio_vbase);
1705         par->mmio_vbase = NULL;
1706
1707         release_mem_region(info->fix.mmio_start,
1708                            info->fix.mmio_len);
1709 }
1710
1711 static int __devinit neo_map_video(struct fb_info *info,
1712                                    struct pci_dev *dev, int video_len)
1713 {
1714         //unsigned long addr;
1715
1716         DBG("neo_map_video");
1717
1718         info->fix.smem_start = pci_resource_start(dev, 0);
1719         info->fix.smem_len = video_len;
1720
1721         if (!request_mem_region(info->fix.smem_start, info->fix.smem_len,
1722                                 "frame buffer")) {
1723                 printk("neofb: frame buffer in use\n");
1724                 return -EBUSY;
1725         }
1726
1727         info->screen_base =
1728             ioremap(info->fix.smem_start, info->fix.smem_len);
1729         if (!info->screen_base) {
1730                 printk("neofb: unable to map screen memory\n");
1731                 release_mem_region(info->fix.smem_start,
1732                                    info->fix.smem_len);
1733                 return -ENOMEM;
1734         } else
1735                 printk(KERN_INFO "neofb: mapped framebuffer at %p\n",
1736                        info->screen_base);
1737
1738 #ifdef CONFIG_MTRR
1739         ((struct neofb_par *)(info->par))->mtrr =
1740                 mtrr_add(info->fix.smem_start, pci_resource_len(dev, 0),
1741                                 MTRR_TYPE_WRCOMB, 1);
1742 #endif
1743
1744         /* Clear framebuffer, it's all white in memory after boot */
1745         memset_io(info->screen_base, 0, info->fix.smem_len);
1746
1747         /* Allocate Cursor drawing pad.
1748         info->fix.smem_len -= PAGE_SIZE;
1749         addr = info->fix.smem_start + info->fix.smem_len;
1750         write_le32(NEOREG_CURSMEMPOS, ((0x000f & (addr >> 10)) << 8) |
1751                                         ((0x0ff0 & (addr >> 10)) >> 4), par);
1752         addr = (unsigned long) info->screen_base + info->fix.smem_len;
1753         info->sprite.addr = (u8 *) addr; */
1754         return 0;
1755 }
1756
1757 static void neo_unmap_video(struct fb_info *info)
1758 {
1759         DBG("neo_unmap_video");
1760
1761 #ifdef CONFIG_MTRR
1762         {
1763                 struct neofb_par *par = info->par;
1764
1765                 mtrr_del(par->mtrr, info->fix.smem_start,
1766                          info->fix.smem_len);
1767         }
1768 #endif
1769         iounmap(info->screen_base);
1770         info->screen_base = NULL;
1771
1772         release_mem_region(info->fix.smem_start,
1773                            info->fix.smem_len);
1774 }
1775
1776 static int __devinit neo_scan_monitor(struct fb_info *info)
1777 {
1778         struct neofb_par *par = info->par;
1779         unsigned char type, display;
1780         int w;
1781
1782         // Eventually we will have i2c support.
1783         info->monspecs.modedb = kmalloc(sizeof(struct fb_videomode), GFP_KERNEL);
1784         if (!info->monspecs.modedb)
1785                 return -ENOMEM;
1786         info->monspecs.modedb_len = 1;
1787
1788         /* Determine the panel type */
1789         vga_wgfx(NULL, 0x09, 0x26);
1790         type = vga_rgfx(NULL, 0x21);
1791         display = vga_rgfx(NULL, 0x20);
1792         if (!par->internal_display && !par->external_display) {
1793                 par->internal_display = display & 2 || !(display & 3) ? 1 : 0;
1794                 par->external_display = display & 1;
1795                 printk (KERN_INFO "Autodetected %s display\n",
1796                         par->internal_display && par->external_display ? "simultaneous" :
1797                         par->internal_display ? "internal" : "external");
1798         }
1799
1800         /* Determine panel width -- used in NeoValidMode. */
1801         w = vga_rgfx(NULL, 0x20);
1802         vga_wgfx(NULL, 0x09, 0x00);
1803         switch ((w & 0x18) >> 3) {
1804         case 0x00:
1805                 // 640x480@60
1806                 par->NeoPanelWidth = 640;
1807                 par->NeoPanelHeight = 480;
1808                 memcpy(info->monspecs.modedb, &vesa_modes[3], sizeof(struct fb_videomode));
1809                 break;
1810         case 0x01:
1811                 par->NeoPanelWidth = 800;
1812                 if (par->libretto) {
1813                         par->NeoPanelHeight = 480;
1814                         memcpy(info->monspecs.modedb, &mode800x480, sizeof(struct fb_videomode));
1815                 } else {
1816                         // 800x600@60
1817                         par->NeoPanelHeight = 600;
1818                         memcpy(info->monspecs.modedb, &vesa_modes[8], sizeof(struct fb_videomode));
1819                 }
1820                 break;
1821         case 0x02:
1822                 // 1024x768@60
1823                 par->NeoPanelWidth = 1024;
1824                 par->NeoPanelHeight = 768;
1825                 memcpy(info->monspecs.modedb, &vesa_modes[13], sizeof(struct fb_videomode));
1826                 break;
1827         case 0x03:
1828                 /* 1280x1024@60 panel support needs to be added */
1829 #ifdef NOT_DONE
1830                 par->NeoPanelWidth = 1280;
1831                 par->NeoPanelHeight = 1024;
1832                 memcpy(info->monspecs.modedb, &vesa_modes[20], sizeof(struct fb_videomode));
1833                 break;
1834 #else
1835                 printk(KERN_ERR
1836                        "neofb: Only 640x480, 800x600/480 and 1024x768 panels are currently supported\n");
1837                 return -1;
1838 #endif
1839         default:
1840                 // 640x480@60
1841                 par->NeoPanelWidth = 640;
1842                 par->NeoPanelHeight = 480;
1843                 memcpy(info->monspecs.modedb, &vesa_modes[3], sizeof(struct fb_videomode));
1844                 break;
1845         }
1846
1847         printk(KERN_INFO "Panel is a %dx%d %s %s display\n",
1848                par->NeoPanelWidth,
1849                par->NeoPanelHeight,
1850                (type & 0x02) ? "color" : "monochrome",
1851                (type & 0x10) ? "TFT" : "dual scan");
1852         return 0;
1853 }
1854
1855 static int __devinit neo_init_hw(struct fb_info *info)
1856 {
1857         struct neofb_par *par = info->par;
1858         int videoRam = 896;
1859         int maxClock = 65000;
1860         int CursorMem = 1024;
1861         int CursorOff = 0x100;
1862
1863         DBG("neo_init_hw");
1864
1865         neoUnlock();
1866
1867 #if 0
1868         printk(KERN_DEBUG "--- Neo extended register dump ---\n");
1869         for (int w = 0; w < 0x85; w++)
1870                 printk(KERN_DEBUG "CR %p: %p\n", (void *) w,
1871                        (void *) vga_rcrt(NULL, w));
1872         for (int w = 0; w < 0xC7; w++)
1873                 printk(KERN_DEBUG "GR %p: %p\n", (void *) w,
1874                        (void *) vga_rgfx(NULL, w));
1875 #endif
1876         switch (info->fix.accel) {
1877         case FB_ACCEL_NEOMAGIC_NM2070:
1878                 videoRam = 896;
1879                 maxClock = 65000;
1880                 break;
1881         case FB_ACCEL_NEOMAGIC_NM2090:
1882         case FB_ACCEL_NEOMAGIC_NM2093:
1883         case FB_ACCEL_NEOMAGIC_NM2097:
1884                 videoRam = 1152;
1885                 maxClock = 80000;
1886                 break;
1887         case FB_ACCEL_NEOMAGIC_NM2160:
1888                 videoRam = 2048;
1889                 maxClock = 90000;
1890                 break;
1891         case FB_ACCEL_NEOMAGIC_NM2200:
1892                 videoRam = 2560;
1893                 maxClock = 110000;
1894                 break;
1895         case FB_ACCEL_NEOMAGIC_NM2230:
1896                 videoRam = 3008;
1897                 maxClock = 110000;
1898                 break;
1899         case FB_ACCEL_NEOMAGIC_NM2360:
1900                 videoRam = 4096;
1901                 maxClock = 110000;
1902                 break;
1903         case FB_ACCEL_NEOMAGIC_NM2380:
1904                 videoRam = 6144;
1905                 maxClock = 110000;
1906                 break;
1907         }
1908         switch (info->fix.accel) {
1909         case FB_ACCEL_NEOMAGIC_NM2070:
1910         case FB_ACCEL_NEOMAGIC_NM2090:
1911         case FB_ACCEL_NEOMAGIC_NM2093:
1912                 CursorMem = 2048;
1913                 CursorOff = 0x100;
1914                 break;
1915         case FB_ACCEL_NEOMAGIC_NM2097:
1916         case FB_ACCEL_NEOMAGIC_NM2160:
1917                 CursorMem = 1024;
1918                 CursorOff = 0x100;
1919                 break;
1920         case FB_ACCEL_NEOMAGIC_NM2200:
1921         case FB_ACCEL_NEOMAGIC_NM2230:
1922         case FB_ACCEL_NEOMAGIC_NM2360:
1923         case FB_ACCEL_NEOMAGIC_NM2380:
1924                 CursorMem = 1024;
1925                 CursorOff = 0x1000;
1926
1927                 par->neo2200 = (Neo2200 __iomem *) par->mmio_vbase;
1928                 break;
1929         }
1930 /*
1931         info->sprite.size = CursorMem;
1932         info->sprite.scan_align = 1;
1933         info->sprite.buf_align = 1;
1934         info->sprite.flags = FB_PIXMAP_IO;
1935         info->sprite.outbuf = neofb_draw_cursor;
1936 */
1937         par->maxClock = maxClock;
1938         par->cursorOff = CursorOff;
1939         return videoRam * 1024;
1940 }
1941
1942
1943 static struct fb_info *__devinit neo_alloc_fb_info(struct pci_dev *dev, const struct
1944                                                    pci_device_id *id)
1945 {
1946         struct fb_info *info;
1947         struct neofb_par *par;
1948
1949         info = framebuffer_alloc(sizeof(struct neofb_par), &dev->dev);
1950
1951         if (!info)
1952                 return NULL;
1953
1954         par = info->par;
1955
1956         info->fix.accel = id->driver_data;
1957
1958         par->pci_burst = !nopciburst;
1959         par->lcd_stretch = !nostretch;
1960         par->libretto = libretto;
1961
1962         par->internal_display = internal;
1963         par->external_display = external;
1964         info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1965
1966         switch (info->fix.accel) {
1967         case FB_ACCEL_NEOMAGIC_NM2070:
1968                 snprintf(info->fix.id, sizeof(info->fix.id),
1969                                 "MagicGraph 128");
1970                 break;
1971         case FB_ACCEL_NEOMAGIC_NM2090:
1972                 snprintf(info->fix.id, sizeof(info->fix.id),
1973                                 "MagicGraph 128V");
1974                 break;
1975         case FB_ACCEL_NEOMAGIC_NM2093:
1976                 snprintf(info->fix.id, sizeof(info->fix.id),
1977                                 "MagicGraph 128ZV");
1978                 break;
1979         case FB_ACCEL_NEOMAGIC_NM2097:
1980                 snprintf(info->fix.id, sizeof(info->fix.id),
1981                                 "MagicGraph 128ZV+");
1982                 break;
1983         case FB_ACCEL_NEOMAGIC_NM2160:
1984                 snprintf(info->fix.id, sizeof(info->fix.id),
1985                                 "MagicGraph 128XD");
1986                 break;
1987         case FB_ACCEL_NEOMAGIC_NM2200:
1988                 snprintf(info->fix.id, sizeof(info->fix.id),
1989                                 "MagicGraph 256AV");
1990                 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
1991                                FBINFO_HWACCEL_COPYAREA |
1992                                FBINFO_HWACCEL_FILLRECT;
1993                 break;
1994         case FB_ACCEL_NEOMAGIC_NM2230:
1995                 snprintf(info->fix.id, sizeof(info->fix.id),
1996                                 "MagicGraph 256AV+");
1997                 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
1998                                FBINFO_HWACCEL_COPYAREA |
1999                                FBINFO_HWACCEL_FILLRECT;
2000                 break;
2001         case FB_ACCEL_NEOMAGIC_NM2360:
2002                 snprintf(info->fix.id, sizeof(info->fix.id),
2003                                 "MagicGraph 256ZX");
2004                 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2005                                FBINFO_HWACCEL_COPYAREA |
2006                                FBINFO_HWACCEL_FILLRECT;
2007                 break;
2008         case FB_ACCEL_NEOMAGIC_NM2380:
2009                 snprintf(info->fix.id, sizeof(info->fix.id),
2010                                 "MagicGraph 256XL+");
2011                 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2012                                FBINFO_HWACCEL_COPYAREA |
2013                                FBINFO_HWACCEL_FILLRECT;
2014                 break;
2015         }
2016
2017         info->fix.type = FB_TYPE_PACKED_PIXELS;
2018         info->fix.type_aux = 0;
2019         info->fix.xpanstep = 0;
2020         info->fix.ypanstep = 4;
2021         info->fix.ywrapstep = 0;
2022         info->fix.accel = id->driver_data;
2023
2024         info->fbops = &neofb_ops;
2025         info->pseudo_palette = par->palette;
2026         return info;
2027 }
2028
2029 static void neo_free_fb_info(struct fb_info *info)
2030 {
2031         if (info) {
2032                 /*
2033                  * Free the colourmap
2034                  */
2035                 fb_dealloc_cmap(&info->cmap);
2036                 framebuffer_release(info);
2037         }
2038 }
2039
2040 /* --------------------------------------------------------------------- */
2041
2042 static int __devinit neofb_probe(struct pci_dev *dev,
2043                                  const struct pci_device_id *id)
2044 {
2045         struct fb_info *info;
2046         u_int h_sync, v_sync;
2047         int video_len, err;
2048
2049         DBG("neofb_probe");
2050
2051         err = pci_enable_device(dev);
2052         if (err)
2053                 return err;
2054
2055         err = -ENOMEM;
2056         info = neo_alloc_fb_info(dev, id);
2057         if (!info)
2058                 return err;
2059
2060         err = neo_map_mmio(info, dev);
2061         if (err)
2062                 goto err_map_mmio;
2063
2064         err = neo_scan_monitor(info);
2065         if (err)
2066                 goto err_scan_monitor;
2067
2068         video_len = neo_init_hw(info);
2069         if (video_len < 0) {
2070                 err = video_len;
2071                 goto err_init_hw;
2072         }
2073
2074         err = neo_map_video(info, dev, video_len);
2075         if (err)
2076                 goto err_init_hw;
2077
2078         if (!fb_find_mode(&info->var, info, mode_option, NULL, 0,
2079                         info->monspecs.modedb, 16)) {
2080                 printk(KERN_ERR "neofb: Unable to find usable video mode.\n");
2081                 goto err_map_video;
2082         }
2083
2084         /*
2085          * Calculate the hsync and vsync frequencies.  Note that
2086          * we split the 1e12 constant up so that we can preserve
2087          * the precision and fit the results into 32-bit registers.
2088          *  (1953125000 * 512 = 1e12)
2089          */
2090         h_sync = 1953125000 / info->var.pixclock;
2091         h_sync =
2092             h_sync * 512 / (info->var.xres + info->var.left_margin +
2093                             info->var.right_margin + info->var.hsync_len);
2094         v_sync =
2095             h_sync / (info->var.yres + info->var.upper_margin +
2096                       info->var.lower_margin + info->var.vsync_len);
2097
2098         printk(KERN_INFO "neofb v" NEOFB_VERSION
2099                ": %dkB VRAM, using %dx%d, %d.%03dkHz, %dHz\n",
2100                info->fix.smem_len >> 10, info->var.xres,
2101                info->var.yres, h_sync / 1000, h_sync % 1000, v_sync);
2102
2103         if (fb_alloc_cmap(&info->cmap, 256, 0) < 0)
2104                 goto err_map_video;
2105
2106         err = register_framebuffer(info);
2107         if (err < 0)
2108                 goto err_reg_fb;
2109
2110         printk(KERN_INFO "fb%d: %s frame buffer device\n",
2111                info->node, info->fix.id);
2112
2113         /*
2114          * Our driver data
2115          */
2116         pci_set_drvdata(dev, info);
2117         return 0;
2118
2119 err_reg_fb:
2120         fb_dealloc_cmap(&info->cmap);
2121 err_map_video:
2122         neo_unmap_video(info);
2123 err_init_hw:
2124         fb_destroy_modedb(info->monspecs.modedb);
2125 err_scan_monitor:
2126         neo_unmap_mmio(info);
2127 err_map_mmio:
2128         neo_free_fb_info(info);
2129         return err;
2130 }
2131
2132 static void __devexit neofb_remove(struct pci_dev *dev)
2133 {
2134         struct fb_info *info = pci_get_drvdata(dev);
2135
2136         DBG("neofb_remove");
2137
2138         if (info) {
2139                 /*
2140                  * If unregister_framebuffer fails, then
2141                  * we will be leaving hooks that could cause
2142                  * oopsen laying around.
2143                  */
2144                 if (unregister_framebuffer(info))
2145                         printk(KERN_WARNING
2146                                "neofb: danger danger!  Oopsen imminent!\n");
2147
2148                 neo_unmap_video(info);
2149                 fb_destroy_modedb(info->monspecs.modedb);
2150                 neo_unmap_mmio(info);
2151                 neo_free_fb_info(info);
2152
2153                 /*
2154                  * Ensure that the driver data is no longer
2155                  * valid.
2156                  */
2157                 pci_set_drvdata(dev, NULL);
2158         }
2159 }
2160
2161 static struct pci_device_id neofb_devices[] = {
2162         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2070,
2163          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2070},
2164
2165         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2090,
2166          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2090},
2167
2168         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2093,
2169          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2093},
2170
2171         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2097,
2172          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2097},
2173
2174         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2160,
2175          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2160},
2176
2177         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2200,
2178          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2200},
2179
2180         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2230,
2181          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2230},
2182
2183         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2360,
2184          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2360},
2185
2186         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2380,
2187          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2380},
2188
2189         {0, 0, 0, 0, 0, 0, 0}
2190 };
2191
2192 MODULE_DEVICE_TABLE(pci, neofb_devices);
2193
2194 static struct pci_driver neofb_driver = {
2195         .name =         "neofb",
2196         .id_table =     neofb_devices,
2197         .probe =        neofb_probe,
2198         .remove =       __devexit_p(neofb_remove)
2199 };
2200
2201 /* ************************* init in-kernel code ************************** */
2202
2203 #ifndef MODULE
2204 static int __init neofb_setup(char *options)
2205 {
2206         char *this_opt;
2207
2208         DBG("neofb_setup");
2209
2210         if (!options || !*options)
2211                 return 0;
2212
2213         while ((this_opt = strsep(&options, ",")) != NULL) {
2214                 if (!*this_opt)
2215                         continue;
2216
2217                 if (!strncmp(this_opt, "internal", 8))
2218                         internal = 1;
2219                 else if (!strncmp(this_opt, "external", 8))
2220                         external = 1;
2221                 else if (!strncmp(this_opt, "nostretch", 9))
2222                         nostretch = 1;
2223                 else if (!strncmp(this_opt, "nopciburst", 10))
2224                         nopciburst = 1;
2225                 else if (!strncmp(this_opt, "libretto", 8))
2226                         libretto = 1;
2227                 else
2228                         mode_option = this_opt;
2229         }
2230         return 0;
2231 }
2232 #endif  /*  MODULE  */
2233
2234 static int __init neofb_init(void)
2235 {
2236 #ifndef MODULE
2237         char *option = NULL;
2238
2239         if (fb_get_options("neofb", &option))
2240                 return -ENODEV;
2241         neofb_setup(option);
2242 #endif
2243         return pci_register_driver(&neofb_driver);
2244 }
2245
2246 module_init(neofb_init);
2247
2248 #ifdef MODULE
2249 static void __exit neofb_exit(void)
2250 {
2251         pci_unregister_driver(&neofb_driver);
2252 }
2253
2254 module_exit(neofb_exit);
2255 #endif                          /* MODULE */