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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         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         int memlen, vramlen;
 596         int mode_ok = 0;
 597
 598         DBG("neofb_check_var");
 599
 600         if (PICOS2KHZ(var->pixclock) > par->maxClock)
 601                 return -EINVAL;
 602
 603         /* Is the mode larger than the LCD panel? */
 604         if (par->internal_display &&
 605             ((var->xres > par->NeoPanelWidth) ||
 606              (var->yres > par->NeoPanelHeight))) {
 607                 printk(KERN_INFO
 608                        "Mode (%dx%d) larger than the LCD panel (%dx%d)\n",
 609                        var->xres, var->yres, par->NeoPanelWidth,
 610                        par->NeoPanelHeight);
 611                 return -EINVAL;
 612         }
 613
 614         /* Is the mode one of the acceptable sizes? */
 615         if (!par->internal_display)
 616                 mode_ok = 1;
 617         else {
 618                 switch (var->xres) {
 619                 case 1280:
 620                         if (var->yres == 1024)
 621                                 mode_ok = 1;
 622                         break;
 623                 case 1024:
 624                         if (var->yres == 768)
 625                                 mode_ok = 1;
 626                         break;
 627                 case 800:
 628                         if (var->yres == (par->libretto ? 480 : 600))
 629                                 mode_ok = 1;
 630                         break;
 631                 case 640:
 632                         if (var->yres == 480)
 633                                 mode_ok = 1;
 634                         break;
 635                 }
 636         }
 637
 638         if (!mode_ok) {
 639                 printk(KERN_INFO
 640                        "Mode (%dx%d) won't display properly on LCD\n",
 641                        var->xres, var->yres);
 642                 return -EINVAL;
 643         }
 644
 645         var->red.msb_right = 0;
 646         var->green.msb_right = 0;
 647         var->blue.msb_right = 0;
 648         var->transp.msb_right = 0;
 649
 650         var->transp.offset = 0;
 651         var->transp.length = 0;
 652         switch (var->bits_per_pixel) {
 653         case 8:         /* PSEUDOCOLOUR, 256 */
 654                 var->red.offset = 0;
 655                 var->red.length = 8;
 656                 var->green.offset = 0;
 657                 var->green.length = 8;
 658                 var->blue.offset = 0;
 659                 var->blue.length = 8;
 660                 break;
 661
 662         case 16:                /* DIRECTCOLOUR, 64k */
 663                 var->red.offset = 11;
 664                 var->red.length = 5;
 665                 var->green.offset = 5;
 666                 var->green.length = 6;
 667                 var->blue.offset = 0;
 668                 var->blue.length = 5;
 669                 break;
 670
 671         case 24:                /* TRUECOLOUR, 16m */
 672                 var->red.offset = 16;
 673                 var->red.length = 8;
 674                 var->green.offset = 8;
 675                 var->green.length = 8;
 676                 var->blue.offset = 0;
 677                 var->blue.length = 8;
 678                 break;
 679
 680 #ifdef NO_32BIT_SUPPORT_YET
 681         case 32:                /* TRUECOLOUR, 16m */
 682                 var->transp.offset = 24;
 683                 var->transp.length = 8;
 684                 var->red.offset = 16;
 685                 var->red.length = 8;
 686                 var->green.offset = 8;
 687                 var->green.length = 8;
 688                 var->blue.offset = 0;
 689                 var->blue.length = 8;
 690                 break;
 691 #endif
 692         default:
 693                 printk(KERN_WARNING "neofb: no support for %dbpp\n",
 694                        var->bits_per_pixel);
 695                 return -EINVAL;
 696         }
 697
 698         vramlen = info->fix.smem_len;
 699         if (vramlen > 4 * 1024 * 1024)
 700                 vramlen = 4 * 1024 * 1024;
 701
 702         if (var->xres_virtual < var->xres)
 703                 var->xres_virtual = var->xres;
 704
 705         memlen = var->xres_virtual * var->bits_per_pixel * var->yres_virtual >> 3;
 706
 707         if (memlen > vramlen) {
 708                 var->yres_virtual =  vramlen * 8 / (var->xres_virtual *
 709                                         var->bits_per_pixel);
 710                 memlen = var->xres_virtual * var->bits_per_pixel *
 711                                 var->yres_virtual / 8;
 712         }
 713
 714         /* we must round yres/xres down, we already rounded y/xres_virtual up
 715            if it was possible. We should return -EINVAL, but I disagree */
 716         if (var->yres_virtual < var->yres)
 717                 var->yres = var->yres_virtual;
 718         if (var->xoffset + var->xres > var->xres_virtual)
 719                 var->xoffset = var->xres_virtual - var->xres;
 720         if (var->yoffset + var->yres > var->yres_virtual)
 721                 var->yoffset = var->yres_virtual - var->yres;
 722
 723         var->nonstd = 0;
 724         var->height = -1;
 725         var->width = -1;
 726
 727         if (var->bits_per_pixel >= 24 || !par->neo2200)
 728                 var->accel_flags &= ~FB_ACCELF_TEXT;
 729         return 0;
 730 }
 731
 732 static int neofb_set_par(struct fb_info *info)
 733 {
 734         struct neofb_par *par = info->par;
 735         unsigned char temp;
 736         int i, clock_hi = 0;
 737         int lcd_stretch;
 738         int hoffset, voffset;
 739         int vsync_start, vtotal;
 740
 741         DBG("neofb_set_par");
 742
 743         neoUnlock();
 744
 745         vgaHWProtect(1);        /* Blank the screen */
 746
 747         vsync_start = info->var.yres + info->var.lower_margin;
 748         vtotal = vsync_start + info->var.vsync_len + info->var.upper_margin;
 749
 750         /*
 751          * This will allocate the datastructure and initialize all of the
 752          * generic VGA registers.
 753          */
 754
 755         if (vgaHWInit(&info->var, par))
 756                 return -EINVAL;
 757
 758         /*
 759          * The default value assigned by vgaHW.c is 0x41, but this does
 760          * not work for NeoMagic.
 761          */
 762         par->Attribute[16] = 0x01;
 763
 764         switch (info->var.bits_per_pixel) {
 765         case 8:
 766                 par->CRTC[0x13] = info->var.xres_virtual >> 3;
 767                 par->ExtCRTOffset = info->var.xres_virtual >> 11;
 768                 par->ExtColorModeSelect = 0x11;
 769                 break;
 770         case 16:
 771                 par->CRTC[0x13] = info->var.xres_virtual >> 2;
 772                 par->ExtCRTOffset = info->var.xres_virtual >> 10;
 773                 par->ExtColorModeSelect = 0x13;
 774                 break;
 775         case 24:
 776                 par->CRTC[0x13] = (info->var.xres_virtual * 3) >> 3;
 777                 par->ExtCRTOffset = (info->var.xres_virtual * 3) >> 11;
 778                 par->ExtColorModeSelect = 0x14;
 779                 break;
 780 #ifdef NO_32BIT_SUPPORT_YET
 781         case 32:                /* FIXME: guessed values */
 782                 par->CRTC[0x13] = info->var.xres_virtual >> 1;
 783                 par->ExtCRTOffset = info->var.xres_virtual >> 9;
 784                 par->ExtColorModeSelect = 0x15;
 785                 break;
 786 #endif
 787         default:
 788                 break;
 789         }
 790
 791         par->ExtCRTDispAddr = 0x10;
 792
 793         /* Vertical Extension */
 794         par->VerticalExt = (((vtotal - 2) & 0x400) >> 10)
 795             | (((info->var.yres - 1) & 0x400) >> 9)
 796             | (((vsync_start) & 0x400) >> 8)
 797             | (((vsync_start) & 0x400) >> 7);
 798
 799         /* Fast write bursts on unless disabled. */
 800         if (par->pci_burst)
 801                 par->SysIfaceCntl1 = 0x30;
 802         else
 803                 par->SysIfaceCntl1 = 0x00;
 804
 805         par->SysIfaceCntl2 = 0xc0;      /* VESA Bios sets this to 0x80! */
 806
 807         /* Initialize: by default, we want display config register to be read */
 808         par->PanelDispCntlRegRead = 1;
 809
 810         /* Enable any user specified display devices. */
 811         par->PanelDispCntlReg1 = 0x00;
 812         if (par->internal_display)
 813                 par->PanelDispCntlReg1 |= 0x02;
 814         if (par->external_display)
 815                 par->PanelDispCntlReg1 |= 0x01;
 816
 817         /* If the user did not specify any display devices, then... */
 818         if (par->PanelDispCntlReg1 == 0x00) {
 819                 /* Default to internal (i.e., LCD) only. */
 820                 par->PanelDispCntlReg1 = vga_rgfx(NULL, 0x20) & 0x03;
 821         }
 822
 823         /* If we are using a fixed mode, then tell the chip we are. */
 824         switch (info->var.xres) {
 825         case 1280:
 826                 par->PanelDispCntlReg1 |= 0x60;
 827                 break;
 828         case 1024:
 829                 par->PanelDispCntlReg1 |= 0x40;
 830                 break;
 831         case 800:
 832                 par->PanelDispCntlReg1 |= 0x20;
 833                 break;
 834         case 640:
 835         default:
 836                 break;
 837         }
 838
 839         /* Setup shadow register locking. */
 840         switch (par->PanelDispCntlReg1 & 0x03) {
 841         case 0x01:              /* External CRT only mode: */
 842                 par->GeneralLockReg = 0x00;
 843                 /* We need to program the VCLK for external display only mode. */
 844                 par->ProgramVCLK = 1;
 845                 break;
 846         case 0x02:              /* Internal LCD only mode: */
 847         case 0x03:              /* Simultaneous internal/external (LCD/CRT) mode: */
 848                 par->GeneralLockReg = 0x01;
 849                 /* Don't program the VCLK when using the LCD. */
 850                 par->ProgramVCLK = 0;
 851                 break;
 852         }
 853
 854         /*
 855          * If the screen is to be stretched, turn on stretching for the
 856          * various modes.
 857          *
 858          * OPTION_LCD_STRETCH means stretching should be turned off!
 859          */
 860         par->PanelDispCntlReg2 = 0x00;
 861         par->PanelDispCntlReg3 = 0x00;
 862
 863         if (par->lcd_stretch && (par->PanelDispCntlReg1 == 0x02) &&     /* LCD only */
 864             (info->var.xres != par->NeoPanelWidth)) {
 865                 switch (info->var.xres) {
 866                 case 320:       /* Needs testing.  KEM -- 24 May 98 */
 867                 case 400:       /* Needs testing.  KEM -- 24 May 98 */
 868                 case 640:
 869                 case 800:
 870                 case 1024:
 871                         lcd_stretch = 1;
 872                         par->PanelDispCntlReg2 |= 0xC6;
 873                         break;
 874                 default:
 875                         lcd_stretch = 0;
 876                         /* No stretching in these modes. */
 877                 }
 878         } else
 879                 lcd_stretch = 0;
 880
 881         /*
 882          * If the screen is to be centerd, turn on the centering for the
 883          * various modes.
 884          */
 885         par->PanelVertCenterReg1 = 0x00;
 886         par->PanelVertCenterReg2 = 0x00;
 887         par->PanelVertCenterReg3 = 0x00;
 888         par->PanelVertCenterReg4 = 0x00;
 889         par->PanelVertCenterReg5 = 0x00;
 890         par->PanelHorizCenterReg1 = 0x00;
 891         par->PanelHorizCenterReg2 = 0x00;
 892         par->PanelHorizCenterReg3 = 0x00;
 893         par->PanelHorizCenterReg4 = 0x00;
 894         par->PanelHorizCenterReg5 = 0x00;
 895
 896
 897         if (par->PanelDispCntlReg1 & 0x02) {
 898                 if (info->var.xres == par->NeoPanelWidth) {
 899                         /*
 900                          * No centering required when the requested display width
 901                          * equals the panel width.
 902                          */
 903                 } else {
 904                         par->PanelDispCntlReg2 |= 0x01;
 905                         par->PanelDispCntlReg3 |= 0x10;
 906
 907                         /* Calculate the horizontal and vertical offsets. */
 908                         if (!lcd_stretch) {
 909                                 hoffset =
 910                                     ((par->NeoPanelWidth -
 911                                       info->var.xres) >> 4) - 1;
 912                                 voffset =
 913                                     ((par->NeoPanelHeight -
 914                                       info->var.yres) >> 1) - 2;
 915                         } else {
 916                                 /* Stretched modes cannot be centered. */
 917                                 hoffset = 0;
 918                                 voffset = 0;
 919                         }
 920
 921                         switch (info->var.xres) {
 922                         case 320:       /* Needs testing.  KEM -- 24 May 98 */
 923                                 par->PanelHorizCenterReg3 = hoffset;
 924                                 par->PanelVertCenterReg2 = voffset;
 925                                 break;
 926                         case 400:       /* Needs testing.  KEM -- 24 May 98 */
 927                                 par->PanelHorizCenterReg4 = hoffset;
 928                                 par->PanelVertCenterReg1 = voffset;
 929                                 break;
 930                         case 640:
 931                                 par->PanelHorizCenterReg1 = hoffset;
 932                                 par->PanelVertCenterReg3 = voffset;
 933                                 break;
 934                         case 800:
 935                                 par->PanelHorizCenterReg2 = hoffset;
 936                                 par->PanelVertCenterReg4 = voffset;
 937                                 break;
 938                         case 1024:
 939                                 par->PanelHorizCenterReg5 = hoffset;
 940                                 par->PanelVertCenterReg5 = voffset;
 941                                 break;
 942                         case 1280:
 943                         default:
 944                                 /* No centering in these modes. */
 945                                 break;
 946                         }
 947                 }
 948         }
 949
 950         par->biosMode =
 951             neoFindMode(info->var.xres, info->var.yres,
 952                         info->var.bits_per_pixel);
 953
 954         /*
 955          * Calculate the VCLK that most closely matches the requested dot
 956          * clock.
 957          */
 958         neoCalcVCLK(info, par, PICOS2KHZ(info->var.pixclock));
 959
 960         /* Since we program the clocks ourselves, always use VCLK3. */
 961         par->MiscOutReg |= 0x0C;
 962
 963         /* alread unlocked above */
 964         /* BOGUS  vga_wgfx(NULL, 0x09, 0x26); */
 965
 966         /* don't know what this is, but it's 0 from bootup anyway */
 967         vga_wgfx(NULL, 0x15, 0x00);
 968
 969         /* was set to 0x01 by my bios in text and vesa modes */
 970         vga_wgfx(NULL, 0x0A, par->GeneralLockReg);
 971
 972         /*
 973          * The color mode needs to be set before calling vgaHWRestore
 974          * to ensure the DAC is initialized properly.
 975          *
 976          * NOTE: Make sure we don't change bits make sure we don't change
 977          * any reserved bits.
 978          */
 979         temp = vga_rgfx(NULL, 0x90);
 980         switch (info->fix.accel) {
 981         case FB_ACCEL_NEOMAGIC_NM2070:
 982                 temp &= 0xF0;   /* Save bits 7:4 */
 983                 temp |= (par->ExtColorModeSelect & ~0xF0);
 984                 break;
 985         case FB_ACCEL_NEOMAGIC_NM2090:
 986         case FB_ACCEL_NEOMAGIC_NM2093:
 987         case FB_ACCEL_NEOMAGIC_NM2097:
 988         case FB_ACCEL_NEOMAGIC_NM2160:
 989         case FB_ACCEL_NEOMAGIC_NM2200:
 990         case FB_ACCEL_NEOMAGIC_NM2230:
 991         case FB_ACCEL_NEOMAGIC_NM2360:
 992         case FB_ACCEL_NEOMAGIC_NM2380:
 993                 temp &= 0x70;   /* Save bits 6:4 */
 994                 temp |= (par->ExtColorModeSelect & ~0x70);
 995                 break;
 996         }
 997
 998         vga_wgfx(NULL, 0x90, temp);
 999
1000         /*
1001          * In some rare cases a lockup might occur if we don't delay
1002          * here. (Reported by Miles Lane)
1003          */
1004         //mdelay(200);
1005
1006         /*
1007          * Disable horizontal and vertical graphics and text expansions so
1008          * that vgaHWRestore works properly.
1009          */
1010         temp = vga_rgfx(NULL, 0x25);
1011         temp &= 0x39;
1012         vga_wgfx(NULL, 0x25, temp);
1013
1014         /*
1015          * Sleep for 200ms to make sure that the two operations above have
1016          * had time to take effect.
1017          */
1018         mdelay(200);
1019
1020         /*
1021          * This function handles restoring the generic VGA registers.  */
1022         vgaHWRestore(info, par);
1023
1024         /* linear colormap for non palettized modes */
1025         switch (info->var.bits_per_pixel) {
1026         case 8:
1027                 /* PseudoColor, 256 */
1028                 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
1029                 break;
1030         case 16:
1031                 /* TrueColor, 64k */
1032                 info->fix.visual = FB_VISUAL_TRUECOLOR;
1033
1034                 for (i = 0; i < 64; i++) {
1035                         outb(i, 0x3c8);
1036
1037                         outb(i << 1, 0x3c9);
1038                         outb(i, 0x3c9);
1039                         outb(i << 1, 0x3c9);
1040                 }
1041                 break;
1042         case 24:
1043 #ifdef NO_32BIT_SUPPORT_YET
1044         case 32:
1045 #endif
1046                 /* TrueColor, 16m */
1047                 info->fix.visual = FB_VISUAL_TRUECOLOR;
1048
1049                 for (i = 0; i < 256; i++) {
1050                         outb(i, 0x3c8);
1051
1052                         outb(i, 0x3c9);
1053                         outb(i, 0x3c9);
1054                         outb(i, 0x3c9);
1055                 }
1056                 break;
1057         }
1058
1059         vga_wgfx(NULL, 0x0E, par->ExtCRTDispAddr);
1060         vga_wgfx(NULL, 0x0F, par->ExtCRTOffset);
1061         temp = vga_rgfx(NULL, 0x10);
1062         temp &= 0x0F;           /* Save bits 3:0 */
1063         temp |= (par->SysIfaceCntl1 & ~0x0F);   /* VESA Bios sets bit 1! */
1064         vga_wgfx(NULL, 0x10, temp);
1065
1066         vga_wgfx(NULL, 0x11, par->SysIfaceCntl2);
1067         vga_wgfx(NULL, 0x15, 0 /*par->SingleAddrPage */ );
1068         vga_wgfx(NULL, 0x16, 0 /*par->DualAddrPage */ );
1069
1070         temp = vga_rgfx(NULL, 0x20);
1071         switch (info->fix.accel) {
1072         case FB_ACCEL_NEOMAGIC_NM2070:
1073                 temp &= 0xFC;   /* Save bits 7:2 */
1074                 temp |= (par->PanelDispCntlReg1 & ~0xFC);
1075                 break;
1076         case FB_ACCEL_NEOMAGIC_NM2090:
1077         case FB_ACCEL_NEOMAGIC_NM2093:
1078         case FB_ACCEL_NEOMAGIC_NM2097:
1079         case FB_ACCEL_NEOMAGIC_NM2160:
1080                 temp &= 0xDC;   /* Save bits 7:6,4:2 */
1081                 temp |= (par->PanelDispCntlReg1 & ~0xDC);
1082                 break;
1083         case FB_ACCEL_NEOMAGIC_NM2200:
1084         case FB_ACCEL_NEOMAGIC_NM2230:
1085         case FB_ACCEL_NEOMAGIC_NM2360:
1086         case FB_ACCEL_NEOMAGIC_NM2380:
1087                 temp &= 0x98;   /* Save bits 7,4:3 */
1088                 temp |= (par->PanelDispCntlReg1 & ~0x98);
1089                 break;
1090         }
1091         vga_wgfx(NULL, 0x20, temp);
1092
1093         temp = vga_rgfx(NULL, 0x25);
1094         temp &= 0x38;           /* Save bits 5:3 */
1095         temp |= (par->PanelDispCntlReg2 & ~0x38);
1096         vga_wgfx(NULL, 0x25, temp);
1097
1098         if (info->fix.accel != FB_ACCEL_NEOMAGIC_NM2070) {
1099                 temp = vga_rgfx(NULL, 0x30);
1100                 temp &= 0xEF;   /* Save bits 7:5 and bits 3:0 */
1101                 temp |= (par->PanelDispCntlReg3 & ~0xEF);
1102                 vga_wgfx(NULL, 0x30, temp);
1103         }
1104
1105         vga_wgfx(NULL, 0x28, par->PanelVertCenterReg1);
1106         vga_wgfx(NULL, 0x29, par->PanelVertCenterReg2);
1107         vga_wgfx(NULL, 0x2a, par->PanelVertCenterReg3);
1108
1109         if (info->fix.accel != FB_ACCEL_NEOMAGIC_NM2070) {
1110                 vga_wgfx(NULL, 0x32, par->PanelVertCenterReg4);
1111                 vga_wgfx(NULL, 0x33, par->PanelHorizCenterReg1);
1112                 vga_wgfx(NULL, 0x34, par->PanelHorizCenterReg2);
1113                 vga_wgfx(NULL, 0x35, par->PanelHorizCenterReg3);
1114         }
1115
1116         if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2160)
1117                 vga_wgfx(NULL, 0x36, par->PanelHorizCenterReg4);
1118
1119         if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
1120             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
1121             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
1122             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
1123                 vga_wgfx(NULL, 0x36, par->PanelHorizCenterReg4);
1124                 vga_wgfx(NULL, 0x37, par->PanelVertCenterReg5);
1125                 vga_wgfx(NULL, 0x38, par->PanelHorizCenterReg5);
1126
1127                 clock_hi = 1;
1128         }
1129
1130         /* Program VCLK3 if needed. */
1131         if (par->ProgramVCLK && ((vga_rgfx(NULL, 0x9B) != par->VCLK3NumeratorLow)
1132                                  || (vga_rgfx(NULL, 0x9F) != par->VCLK3Denominator)
1133                                  || (clock_hi && ((vga_rgfx(NULL, 0x8F) & ~0x0f)
1134                                                   != (par->VCLK3NumeratorHigh &
1135                                                       ~0x0F))))) {
1136                 vga_wgfx(NULL, 0x9B, par->VCLK3NumeratorLow);
1137                 if (clock_hi) {
1138                         temp = vga_rgfx(NULL, 0x8F);
1139                         temp &= 0x0F;   /* Save bits 3:0 */
1140                         temp |= (par->VCLK3NumeratorHigh & ~0x0F);
1141                         vga_wgfx(NULL, 0x8F, temp);
1142                 }
1143                 vga_wgfx(NULL, 0x9F, par->VCLK3Denominator);
1144         }
1145
1146         if (par->biosMode)
1147                 vga_wcrt(NULL, 0x23, par->biosMode);
1148
1149         vga_wgfx(NULL, 0x93, 0xc0);     /* Gives 5x faster framebuffer writes !!! */
1150
1151         /* Program vertical extension register */
1152         if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
1153             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
1154             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
1155             info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
1156                 vga_wcrt(NULL, 0x70, par->VerticalExt);
1157         }
1158
1159         vgaHWProtect(0);        /* Turn on screen */
1160
1161         /* Calling this also locks offset registers required in update_start */
1162         neoLock(&par->state);
1163
1164         info->fix.line_length =
1165             info->var.xres_virtual * (info->var.bits_per_pixel >> 3);
1166
1167         switch (info->fix.accel) {
1168                 case FB_ACCEL_NEOMAGIC_NM2200:
1169                 case FB_ACCEL_NEOMAGIC_NM2230:
1170                 case FB_ACCEL_NEOMAGIC_NM2360:
1171                 case FB_ACCEL_NEOMAGIC_NM2380:
1172                         neo2200_accel_init(info, &info->var);
1173                         break;
1174                 default:
1175                         break;
1176         }
1177         return 0;
1178 }
1179
1180 /*
1181  *    Pan or Wrap the Display
1182  */
1183 static int neofb_pan_display(struct fb_var_screeninfo *var,
1184                              struct fb_info *info)
1185 {
1186         struct neofb_par *par = info->par;
1187         struct vgastate *state = &par->state;
1188         int oldExtCRTDispAddr;
1189         int Base;
1190
1191         DBG("neofb_update_start");
1192
1193         Base = (var->yoffset * var->xres_virtual + var->xoffset) >> 2;
1194         Base *= (var->bits_per_pixel + 7) / 8;
1195
1196         neoUnlock();
1197
1198         /*
1199          * These are the generic starting address registers.
1200          */
1201         vga_wcrt(state->vgabase, 0x0C, (Base & 0x00FF00) >> 8);
1202         vga_wcrt(state->vgabase, 0x0D, (Base & 0x00FF));
1203
1204         /*
1205          * Make sure we don't clobber some other bits that might already
1206          * have been set. NOTE: NM2200 has a writable bit 3, but it shouldn't
1207          * be needed.
1208          */
1209         oldExtCRTDispAddr = vga_rgfx(NULL, 0x0E);
1210         vga_wgfx(state->vgabase, 0x0E, (((Base >> 16) & 0x0f) | (oldExtCRTDispAddr & 0xf0)));
1211
1212         neoLock(state);
1213
1214         return 0;
1215 }
1216
1217 static int neofb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1218                            u_int transp, struct fb_info *fb)
1219 {
1220         if (regno >= fb->cmap.len || regno > 255)
1221                 return -EINVAL;
1222
1223         if (fb->var.bits_per_pixel <= 8) {
1224                 outb(regno, 0x3c8);
1225
1226                 outb(red >> 10, 0x3c9);
1227                 outb(green >> 10, 0x3c9);
1228                 outb(blue >> 10, 0x3c9);
1229         } else if (regno < 16) {
1230                 switch (fb->var.bits_per_pixel) {
1231                 case 16:
1232                         ((u32 *) fb->pseudo_palette)[regno] =
1233                                 ((red & 0xf800)) | ((green & 0xfc00) >> 5) |
1234                                 ((blue & 0xf800) >> 11);
1235                         break;
1236                 case 24:
1237                         ((u32 *) fb->pseudo_palette)[regno] =
1238                                 ((red & 0xff00) << 8) | ((green & 0xff00)) |
1239                                 ((blue & 0xff00) >> 8);
1240                         break;
1241 #ifdef NO_32BIT_SUPPORT_YET
1242                 case 32:
1243                         ((u32 *) fb->pseudo_palette)[regno] =
1244                                 ((transp & 0xff00) << 16) | ((red & 0xff00) << 8) |
1245                                 ((green & 0xff00)) | ((blue & 0xff00) >> 8);
1246                         break;
1247 #endif
1248                 default:
1249                         return 1;
1250                 }
1251         }
1252
1253         return 0;
1254 }
1255
1256 /*
1257  *    (Un)Blank the display.
1258  */
1259 static int neofb_blank(int blank_mode, struct fb_info *info)
1260 {
1261         /*
1262          *  Blank the screen if blank_mode != 0, else unblank.
1263          *  Return 0 if blanking succeeded, != 0 if un-/blanking failed due to
1264          *  e.g. a video mode which doesn't support it. Implements VESA suspend
1265          *  and powerdown modes for monitors, and backlight control on LCDs.
1266          *    blank_mode == 0: unblanked (backlight on)
1267          *    blank_mode == 1: blank (backlight on)
1268          *    blank_mode == 2: suspend vsync (backlight off)
1269          *    blank_mode == 3: suspend hsync (backlight off)
1270          *    blank_mode == 4: powerdown (backlight off)
1271          *
1272          *  wms...Enable VESA DPMS compatible powerdown mode
1273          *  run "setterm -powersave powerdown" to take advantage
1274          */
1275         struct neofb_par *par = info->par;
1276         int seqflags, lcdflags, dpmsflags, reg, tmpdisp;
1277
1278         /*
1279          * Read back the register bits related to display configuration. They might
1280          * have been changed underneath the driver via Fn key stroke.
1281          */
1282         neoUnlock();
1283         tmpdisp = vga_rgfx(NULL, 0x20) & 0x03;
1284         neoLock(&par->state);
1285
1286         /* In case we blank the screen, we want to store the possibly new
1287          * configuration in the driver. During un-blank, we re-apply this setting,
1288          * since the LCD bit will be cleared in order to switch off the backlight.
1289          */
1290         if (par->PanelDispCntlRegRead) {
1291                 par->PanelDispCntlReg1 = tmpdisp;
1292         }
1293         par->PanelDispCntlRegRead = !blank_mode;
1294
1295         switch (blank_mode) {
1296         case FB_BLANK_POWERDOWN:        /* powerdown - both sync lines down */
1297                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1298                 lcdflags = 0;                   /* LCD off */
1299                 dpmsflags = NEO_GR01_SUPPRESS_HSYNC |
1300                             NEO_GR01_SUPPRESS_VSYNC;
1301 #ifdef CONFIG_TOSHIBA
1302                 /* Do we still need this ? */
1303                 /* attempt to turn off backlight on toshiba; also turns off external */
1304                 {
1305                         SMMRegisters regs;
1306
1307                         regs.eax = 0xff00; /* HCI_SET */
1308                         regs.ebx = 0x0002; /* HCI_BACKLIGHT */
1309                         regs.ecx = 0x0000; /* HCI_DISABLE */
1310                         tosh_smm(&regs);
1311                 }
1312 #endif
1313                 break;
1314         case FB_BLANK_HSYNC_SUSPEND:            /* hsync off */
1315                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1316                 lcdflags = 0;                   /* LCD off */
1317                 dpmsflags = NEO_GR01_SUPPRESS_HSYNC;
1318                 break;
1319         case FB_BLANK_VSYNC_SUSPEND:            /* vsync off */
1320                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1321                 lcdflags = 0;                   /* LCD off */
1322                 dpmsflags = NEO_GR01_SUPPRESS_VSYNC;
1323                 break;
1324         case FB_BLANK_NORMAL:           /* just blank screen (backlight stays on) */
1325                 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1326                 /*
1327                  * During a blank operation with the LID shut, we might store "LCD off"
1328                  * by mistake. Due to timing issues, the BIOS may switch the lights
1329                  * back on, and we turn it back off once we "unblank".
1330                  *
1331                  * So here is an attempt to implement ">=" - if we are in the process
1332                  * of unblanking, and the LCD bit is unset in the driver but set in the
1333                  * register, we must keep it.
1334                  */
1335                 lcdflags = ((par->PanelDispCntlReg1 | tmpdisp) & 0x02); /* LCD normal */
1336                 dpmsflags = 0x00;       /* no hsync/vsync suppression */
1337                 break;
1338         case FB_BLANK_UNBLANK:          /* unblank */
1339                 seqflags = 0;                   /* Enable sequencer */
1340                 lcdflags = ((par->PanelDispCntlReg1 | tmpdisp) & 0x02); /* LCD normal */
1341                 dpmsflags = 0x00;       /* no hsync/vsync suppression */
1342 #ifdef CONFIG_TOSHIBA
1343                 /* Do we still need this ? */
1344                 /* attempt to re-enable backlight/external on toshiba */
1345                 {
1346                         SMMRegisters regs;
1347
1348                         regs.eax = 0xff00; /* HCI_SET */
1349                         regs.ebx = 0x0002; /* HCI_BACKLIGHT */
1350                         regs.ecx = 0x0001; /* HCI_ENABLE */
1351                         tosh_smm(&regs);
1352                 }
1353 #endif
1354                 break;
1355         default:        /* Anything else we don't understand; return 1 to tell
1356                          * fb_blank we didn't aactually do anything */
1357                 return 1;
1358         }
1359
1360         neoUnlock();
1361         reg = (vga_rseq(NULL, 0x01) & ~0x20) | seqflags;
1362         vga_wseq(NULL, 0x01, reg);
1363         reg = (vga_rgfx(NULL, 0x20) & ~0x02) | lcdflags;
1364         vga_wgfx(NULL, 0x20, reg);
1365         reg = (vga_rgfx(NULL, 0x01) & ~0xF0) | 0x80 | dpmsflags;
1366         vga_wgfx(NULL, 0x01, reg);
1367         neoLock(&par->state);
1368         return 0;
1369 }
1370
1371 static void
1372 neo2200_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
1373 {
1374         struct neofb_par *par = info->par;
1375         u_long dst, rop;
1376
1377         dst = rect->dx + rect->dy * info->var.xres_virtual;
1378         rop = rect->rop ? 0x060000 : 0x0c0000;
1379
1380         neo2200_wait_fifo(info, 4);
1381
1382         /* set blt control */
1383         writel(NEO_BC3_FIFO_EN |
1384                NEO_BC0_SRC_IS_FG | NEO_BC3_SKIP_MAPPING |
1385                //               NEO_BC3_DST_XY_ADDR  |
1386                //               NEO_BC3_SRC_XY_ADDR  |
1387                rop, &par->neo2200->bltCntl);
1388
1389         switch (info->var.bits_per_pixel) {
1390         case 8:
1391                 writel(rect->color, &par->neo2200->fgColor);
1392                 break;
1393         case 16:
1394         case 24:
1395                 writel(((u32 *) (info->pseudo_palette))[rect->color],
1396                        &par->neo2200->fgColor);
1397                 break;
1398         }
1399
1400         writel(dst * ((info->var.bits_per_pixel + 7) >> 3),
1401                &par->neo2200->dstStart);
1402         writel((rect->height << 16) | (rect->width & 0xffff),
1403                &par->neo2200->xyExt);
1404 }
1405
1406 static void
1407 neo2200_copyarea(struct fb_info *info, const struct fb_copyarea *area)
1408 {
1409         u32 sx = area->sx, sy = area->sy, dx = area->dx, dy = area->dy;
1410         struct neofb_par *par = info->par;
1411         u_long src, dst, bltCntl;
1412
1413         bltCntl = NEO_BC3_FIFO_EN | NEO_BC3_SKIP_MAPPING | 0x0C0000;
1414
1415         if ((dy > sy) || ((dy == sy) && (dx > sx))) {
1416                 /* Start with the lower right corner */
1417                 sy += (area->height - 1);
1418                 dy += (area->height - 1);
1419                 sx += (area->width - 1);
1420                 dx += (area->width - 1);
1421
1422                 bltCntl |= NEO_BC0_X_DEC | NEO_BC0_DST_Y_DEC | NEO_BC0_SRC_Y_DEC;
1423         }
1424
1425         src = sx * (info->var.bits_per_pixel >> 3) + sy*info->fix.line_length;
1426         dst = dx * (info->var.bits_per_pixel >> 3) + dy*info->fix.line_length;
1427
1428         neo2200_wait_fifo(info, 4);
1429
1430         /* set blt control */
1431         writel(bltCntl, &par->neo2200->bltCntl);
1432
1433         writel(src, &par->neo2200->srcStart);
1434         writel(dst, &par->neo2200->dstStart);
1435         writel((area->height << 16) | (area->width & 0xffff),
1436                &par->neo2200->xyExt);
1437 }
1438
1439 static void
1440 neo2200_imageblit(struct fb_info *info, const struct fb_image *image)
1441 {
1442         struct neofb_par *par = info->par;
1443         int s_pitch = (image->width * image->depth + 7) >> 3;
1444         int scan_align = info->pixmap.scan_align - 1;
1445         int buf_align = info->pixmap.buf_align - 1;
1446         int bltCntl_flags, d_pitch, data_len;
1447
1448         // The data is padded for the hardware
1449         d_pitch = (s_pitch + scan_align) & ~scan_align;
1450         data_len = ((d_pitch * image->height) + buf_align) & ~buf_align;
1451
1452         neo2200_sync(info);
1453
1454         if (image->depth == 1) {
1455                 if (info->var.bits_per_pixel == 24 && image->width < 16) {
1456                         /* FIXME. There is a bug with accelerated color-expanded
1457                          * transfers in 24 bit mode if the image being transferred
1458                          * is less than 16 bits wide. This is due to insufficient
1459                          * padding when writing the image. We need to adjust
1460                          * struct fb_pixmap. Not yet done. */
1461                         return cfb_imageblit(info, image);
1462                 }
1463                 bltCntl_flags = NEO_BC0_SRC_MONO;
1464         } else if (image->depth == info->var.bits_per_pixel) {
1465                 bltCntl_flags = 0;
1466         } else {
1467                 /* We don't currently support hardware acceleration if image
1468                  * depth is different from display */
1469                 return cfb_imageblit(info, image);
1470         }
1471
1472         switch (info->var.bits_per_pixel) {
1473         case 8:
1474                 writel(image->fg_color, &par->neo2200->fgColor);
1475                 writel(image->bg_color, &par->neo2200->bgColor);
1476                 break;
1477         case 16:
1478         case 24:
1479                 writel(((u32 *) (info->pseudo_palette))[image->fg_color],
1480                        &par->neo2200->fgColor);
1481                 writel(((u32 *) (info->pseudo_palette))[image->bg_color],
1482                        &par->neo2200->bgColor);
1483                 break;
1484         }
1485
1486         writel(NEO_BC0_SYS_TO_VID |
1487                 NEO_BC3_SKIP_MAPPING | bltCntl_flags |
1488                 // NEO_BC3_DST_XY_ADDR |
1489                 0x0c0000, &par->neo2200->bltCntl);
1490
1491         writel(0, &par->neo2200->srcStart);
1492 //      par->neo2200->dstStart = (image->dy << 16) | (image->dx & 0xffff);
1493         writel(((image->dx & 0xffff) * (info->var.bits_per_pixel >> 3) +
1494                 image->dy * info->fix.line_length), &par->neo2200->dstStart);
1495         writel((image->height << 16) | (image->width & 0xffff),
1496                &par->neo2200->xyExt);
1497
1498         memcpy_toio(par->mmio_vbase + 0x100000, image->data, data_len);
1499 }
1500
1501 static void
1502 neofb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
1503 {
1504         switch (info->fix.accel) {
1505                 case FB_ACCEL_NEOMAGIC_NM2200:
1506                 case FB_ACCEL_NEOMAGIC_NM2230:
1507                 case FB_ACCEL_NEOMAGIC_NM2360:
1508                 case FB_ACCEL_NEOMAGIC_NM2380:
1509                         neo2200_fillrect(info, rect);
1510                         break;
1511                 default:
1512                         cfb_fillrect(info, rect);
1513                         break;
1514         }
1515 }
1516
1517 static void
1518 neofb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
1519 {
1520         switch (info->fix.accel) {
1521                 case FB_ACCEL_NEOMAGIC_NM2200:
1522                 case FB_ACCEL_NEOMAGIC_NM2230:
1523                 case FB_ACCEL_NEOMAGIC_NM2360:
1524                 case FB_ACCEL_NEOMAGIC_NM2380:
1525                         neo2200_copyarea(info, area);
1526                         break;
1527                 default:
1528                         cfb_copyarea(info, area);
1529                         break;
1530         }
1531 }
1532
1533 static void
1534 neofb_imageblit(struct fb_info *info, const struct fb_image *image)
1535 {
1536         switch (info->fix.accel) {
1537                 case FB_ACCEL_NEOMAGIC_NM2200:
1538                 case FB_ACCEL_NEOMAGIC_NM2230:
1539                 case FB_ACCEL_NEOMAGIC_NM2360:
1540                 case FB_ACCEL_NEOMAGIC_NM2380:
1541                         neo2200_imageblit(info, image);
1542                         break;
1543                 default:
1544                         cfb_imageblit(info, image);
1545                         break;
1546         }
1547 }
1548
1549 static int
1550 neofb_sync(struct fb_info *info)
1551 {
1552         switch (info->fix.accel) {
1553                 case FB_ACCEL_NEOMAGIC_NM2200:
1554                 case FB_ACCEL_NEOMAGIC_NM2230:
1555                 case FB_ACCEL_NEOMAGIC_NM2360:
1556                 case FB_ACCEL_NEOMAGIC_NM2380:
1557                         neo2200_sync(info);
1558                         break;
1559                 default:
1560                         break;
1561         }
1562         return 0;
1563 }
1564
1565 /*
1566 static void
1567 neofb_draw_cursor(struct fb_info *info, u8 *dst, u8 *src, unsigned int width)
1568 {
1569         //memset_io(info->sprite.addr, 0xff, 1);
1570 }
1571
1572 static int
1573 neofb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1574 {
1575         struct neofb_par *par = (struct neofb_par *) info->par;
1576
1577         * Disable cursor *
1578         write_le32(NEOREG_CURSCNTL, ~NEO_CURS_ENABLE, par);
1579
1580         if (cursor->set & FB_CUR_SETPOS) {
1581                 u32 x = cursor->image.dx;
1582                 u32 y = cursor->image.dy;
1583
1584                 info->cursor.image.dx = x;
1585                 info->cursor.image.dy = y;
1586                 write_le32(NEOREG_CURSX, x, par);
1587                 write_le32(NEOREG_CURSY, y, par);
1588         }
1589
1590         if (cursor->set & FB_CUR_SETSIZE) {
1591                 info->cursor.image.height = cursor->image.height;
1592                 info->cursor.image.width = cursor->image.width;
1593         }
1594
1595         if (cursor->set & FB_CUR_SETHOT)
1596                 info->cursor.hot = cursor->hot;
1597
1598         if (cursor->set & FB_CUR_SETCMAP) {
1599                 if (cursor->image.depth == 1) {
1600                         u32 fg = cursor->image.fg_color;
1601                         u32 bg = cursor->image.bg_color;
1602
1603                         info->cursor.image.fg_color = fg;
1604                         info->cursor.image.bg_color = bg;
1605
1606                         fg = ((fg & 0xff0000) >> 16) | ((fg & 0xff) << 16) | (fg & 0xff00);
1607                         bg = ((bg & 0xff0000) >> 16) | ((bg & 0xff) << 16) | (bg & 0xff00);
1608                         write_le32(NEOREG_CURSFGCOLOR, fg, par);
1609                         write_le32(NEOREG_CURSBGCOLOR, bg, par);
1610                 }
1611         }
1612
1613         if (cursor->set & FB_CUR_SETSHAPE)
1614                 fb_load_cursor_image(info);
1615
1616         if (info->cursor.enable)
1617                 write_le32(NEOREG_CURSCNTL, NEO_CURS_ENABLE, par);
1618         return 0;
1619 }
1620 */
1621
1622 static struct fb_ops neofb_ops = {
1623         .owner          = THIS_MODULE,
1624         .fb_open        = neofb_open,
1625         .fb_release     = neofb_release,
1626         .fb_check_var   = neofb_check_var,
1627         .fb_set_par     = neofb_set_par,
1628         .fb_setcolreg   = neofb_setcolreg,
1629         .fb_pan_display = neofb_pan_display,
1630         .fb_blank       = neofb_blank,
1631         .fb_sync        = neofb_sync,
1632         .fb_fillrect    = neofb_fillrect,
1633         .fb_copyarea    = neofb_copyarea,
1634         .fb_imageblit   = neofb_imageblit,
1635 };
1636
1637 /* --------------------------------------------------------------------- */
1638
1639 static struct fb_videomode __devinitdata mode800x480 = {
1640         .xres           = 800,
1641         .yres           = 480,
1642         .pixclock       = 25000,
1643         .left_margin    = 88,
1644         .right_margin   = 40,
1645         .upper_margin   = 23,
1646         .lower_margin   = 1,
1647         .hsync_len      = 128,
1648         .vsync_len      = 4,
1649         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
1650         .vmode          = FB_VMODE_NONINTERLACED
1651 };
1652
1653 static int __devinit neo_map_mmio(struct fb_info *info,
1654                                   struct pci_dev *dev)
1655 {
1656         struct neofb_par *par = info->par;
1657
1658         DBG("neo_map_mmio");
1659
1660         switch (info->fix.accel) {
1661                 case FB_ACCEL_NEOMAGIC_NM2070:
1662                         info->fix.mmio_start = pci_resource_start(dev, 0)+
1663                                 0x100000;
1664                         break;
1665                 case FB_ACCEL_NEOMAGIC_NM2090:
1666                 case FB_ACCEL_NEOMAGIC_NM2093:
1667                         info->fix.mmio_start = pci_resource_start(dev, 0)+
1668                                 0x200000;
1669                         break;
1670                 case FB_ACCEL_NEOMAGIC_NM2160:
1671                 case FB_ACCEL_NEOMAGIC_NM2097:
1672                 case FB_ACCEL_NEOMAGIC_NM2200:
1673                 case FB_ACCEL_NEOMAGIC_NM2230:
1674                 case FB_ACCEL_NEOMAGIC_NM2360:
1675                 case FB_ACCEL_NEOMAGIC_NM2380:
1676                         info->fix.mmio_start = pci_resource_start(dev, 1);
1677                         break;
1678                 default:
1679                         info->fix.mmio_start = pci_resource_start(dev, 0);
1680         }
1681         info->fix.mmio_len = MMIO_SIZE;
1682
1683         if (!request_mem_region
1684             (info->fix.mmio_start, MMIO_SIZE, "memory mapped I/O")) {
1685                 printk("neofb: memory mapped IO in use\n");
1686                 return -EBUSY;
1687         }
1688
1689         par->mmio_vbase = ioremap(info->fix.mmio_start, MMIO_SIZE);
1690         if (!par->mmio_vbase) {
1691                 printk("neofb: unable to map memory mapped IO\n");
1692                 release_mem_region(info->fix.mmio_start,
1693                                    info->fix.mmio_len);
1694                 return -ENOMEM;
1695         } else
1696                 printk(KERN_INFO "neofb: mapped io at %p\n",
1697                        par->mmio_vbase);
1698         return 0;
1699 }
1700
1701 static void neo_unmap_mmio(struct fb_info *info)
1702 {
1703         struct neofb_par *par = info->par;
1704
1705         DBG("neo_unmap_mmio");
1706
1707         iounmap(par->mmio_vbase);
1708         par->mmio_vbase = NULL;
1709
1710         release_mem_region(info->fix.mmio_start,
1711                            info->fix.mmio_len);
1712 }
1713
1714 static int __devinit neo_map_video(struct fb_info *info,
1715                                    struct pci_dev *dev, int video_len)
1716 {
1717         //unsigned long addr;
1718
1719         DBG("neo_map_video");
1720
1721         info->fix.smem_start = pci_resource_start(dev, 0);
1722         info->fix.smem_len = video_len;
1723
1724         if (!request_mem_region(info->fix.smem_start, info->fix.smem_len,
1725                                 "frame buffer")) {
1726                 printk("neofb: frame buffer in use\n");
1727                 return -EBUSY;
1728         }
1729
1730         info->screen_base =
1731             ioremap(info->fix.smem_start, info->fix.smem_len);
1732         if (!info->screen_base) {
1733                 printk("neofb: unable to map screen memory\n");
1734                 release_mem_region(info->fix.smem_start,
1735                                    info->fix.smem_len);
1736                 return -ENOMEM;
1737         } else
1738                 printk(KERN_INFO "neofb: mapped framebuffer at %p\n",
1739                        info->screen_base);
1740
1741 #ifdef CONFIG_MTRR
1742         ((struct neofb_par *)(info->par))->mtrr =
1743                 mtrr_add(info->fix.smem_start, pci_resource_len(dev, 0),
1744                                 MTRR_TYPE_WRCOMB, 1);
1745 #endif
1746
1747         /* Clear framebuffer, it's all white in memory after boot */
1748         memset_io(info->screen_base, 0, info->fix.smem_len);
1749
1750         /* Allocate Cursor drawing pad.
1751         info->fix.smem_len -= PAGE_SIZE;
1752         addr = info->fix.smem_start + info->fix.smem_len;
1753         write_le32(NEOREG_CURSMEMPOS, ((0x000f & (addr >> 10)) << 8) |
1754                                         ((0x0ff0 & (addr >> 10)) >> 4), par);
1755         addr = (unsigned long) info->screen_base + info->fix.smem_len;
1756         info->sprite.addr = (u8 *) addr; */
1757         return 0;
1758 }
1759
1760 static void neo_unmap_video(struct fb_info *info)
1761 {
1762         DBG("neo_unmap_video");
1763
1764 #ifdef CONFIG_MTRR
1765         {
1766                 struct neofb_par *par = info->par;
1767
1768                 mtrr_del(par->mtrr, info->fix.smem_start,
1769                          info->fix.smem_len);
1770         }
1771 #endif
1772         iounmap(info->screen_base);
1773         info->screen_base = NULL;
1774
1775         release_mem_region(info->fix.smem_start,
1776                            info->fix.smem_len);
1777 }
1778
1779 static int __devinit neo_scan_monitor(struct fb_info *info)
1780 {
1781         struct neofb_par *par = info->par;
1782         unsigned char type, display;
1783         int w;
1784
1785         // Eventually we will have i2c support.
1786         info->monspecs.modedb = kmalloc(sizeof(struct fb_videomode), GFP_KERNEL);
1787         if (!info->monspecs.modedb)
1788                 return -ENOMEM;
1789         info->monspecs.modedb_len = 1;
1790
1791         /* Determine the panel type */
1792         vga_wgfx(NULL, 0x09, 0x26);
1793         type = vga_rgfx(NULL, 0x21);
1794         display = vga_rgfx(NULL, 0x20);
1795         if (!par->internal_display && !par->external_display) {
1796                 par->internal_display = display & 2 || !(display & 3) ? 1 : 0;
1797                 par->external_display = display & 1;
1798                 printk (KERN_INFO "Autodetected %s display\n",
1799                         par->internal_display && par->external_display ? "simultaneous" :
1800                         par->internal_display ? "internal" : "external");
1801         }
1802
1803         /* Determine panel width -- used in NeoValidMode. */
1804         w = vga_rgfx(NULL, 0x20);
1805         vga_wgfx(NULL, 0x09, 0x00);
1806         switch ((w & 0x18) >> 3) {
1807         case 0x00:
1808                 // 640x480@60
1809                 par->NeoPanelWidth = 640;
1810                 par->NeoPanelHeight = 480;
1811                 memcpy(info->monspecs.modedb, &vesa_modes[3], sizeof(struct fb_videomode));
1812                 break;
1813         case 0x01:
1814                 par->NeoPanelWidth = 800;
1815                 if (par->libretto) {
1816                         par->NeoPanelHeight = 480;
1817                         memcpy(info->monspecs.modedb, &mode800x480, sizeof(struct fb_videomode));
1818                 } else {
1819                         // 800x600@60
1820                         par->NeoPanelHeight = 600;
1821                         memcpy(info->monspecs.modedb, &vesa_modes[8], sizeof(struct fb_videomode));
1822                 }
1823                 break;
1824         case 0x02:
1825                 // 1024x768@60
1826                 par->NeoPanelWidth = 1024;
1827                 par->NeoPanelHeight = 768;
1828                 memcpy(info->monspecs.modedb, &vesa_modes[13], sizeof(struct fb_videomode));
1829                 break;
1830         case 0x03:
1831                 /* 1280x1024@60 panel support needs to be added */
1832 #ifdef NOT_DONE
1833                 par->NeoPanelWidth = 1280;
1834                 par->NeoPanelHeight = 1024;
1835                 memcpy(info->monspecs.modedb, &vesa_modes[20], sizeof(struct fb_videomode));
1836                 break;
1837 #else
1838                 printk(KERN_ERR
1839                        "neofb: Only 640x480, 800x600/480 and 1024x768 panels are currently supported\n");
1840                 return -1;
1841 #endif
1842         default:
1843                 // 640x480@60
1844                 par->NeoPanelWidth = 640;
1845                 par->NeoPanelHeight = 480;
1846                 memcpy(info->monspecs.modedb, &vesa_modes[3], sizeof(struct fb_videomode));
1847                 break;
1848         }
1849
1850         printk(KERN_INFO "Panel is a %dx%d %s %s display\n",
1851                par->NeoPanelWidth,
1852                par->NeoPanelHeight,
1853                (type & 0x02) ? "color" : "monochrome",
1854                (type & 0x10) ? "TFT" : "dual scan");
1855         return 0;
1856 }
1857
1858 static int __devinit neo_init_hw(struct fb_info *info)
1859 {
1860         struct neofb_par *par = info->par;
1861         int videoRam = 896;
1862         int maxClock = 65000;
1863         int CursorMem = 1024;
1864         int CursorOff = 0x100;
1865
1866         DBG("neo_init_hw");
1867
1868         neoUnlock();
1869
1870 #if 0
1871         printk(KERN_DEBUG "--- Neo extended register dump ---\n");
1872         for (int w = 0; w < 0x85; w++)
1873                 printk(KERN_DEBUG "CR %p: %p\n", (void *) w,
1874                        (void *) vga_rcrt(NULL, w));
1875         for (int w = 0; w < 0xC7; w++)
1876                 printk(KERN_DEBUG "GR %p: %p\n", (void *) w,
1877                        (void *) vga_rgfx(NULL, w));
1878 #endif
1879         switch (info->fix.accel) {
1880         case FB_ACCEL_NEOMAGIC_NM2070:
1881                 videoRam = 896;
1882                 maxClock = 65000;
1883                 break;
1884         case FB_ACCEL_NEOMAGIC_NM2090:
1885         case FB_ACCEL_NEOMAGIC_NM2093:
1886         case FB_ACCEL_NEOMAGIC_NM2097:
1887                 videoRam = 1152;
1888                 maxClock = 80000;
1889                 break;
1890         case FB_ACCEL_NEOMAGIC_NM2160:
1891                 videoRam = 2048;
1892                 maxClock = 90000;
1893                 break;
1894         case FB_ACCEL_NEOMAGIC_NM2200:
1895                 videoRam = 2560;
1896                 maxClock = 110000;
1897                 break;
1898         case FB_ACCEL_NEOMAGIC_NM2230:
1899                 videoRam = 3008;
1900                 maxClock = 110000;
1901                 break;
1902         case FB_ACCEL_NEOMAGIC_NM2360:
1903                 videoRam = 4096;
1904                 maxClock = 110000;
1905                 break;
1906         case FB_ACCEL_NEOMAGIC_NM2380:
1907                 videoRam = 6144;
1908                 maxClock = 110000;
1909                 break;
1910         }
1911         switch (info->fix.accel) {
1912         case FB_ACCEL_NEOMAGIC_NM2070:
1913         case FB_ACCEL_NEOMAGIC_NM2090:
1914         case FB_ACCEL_NEOMAGIC_NM2093:
1915                 CursorMem = 2048;
1916                 CursorOff = 0x100;
1917                 break;
1918         case FB_ACCEL_NEOMAGIC_NM2097:
1919         case FB_ACCEL_NEOMAGIC_NM2160:
1920                 CursorMem = 1024;
1921                 CursorOff = 0x100;
1922                 break;
1923         case FB_ACCEL_NEOMAGIC_NM2200:
1924         case FB_ACCEL_NEOMAGIC_NM2230:
1925         case FB_ACCEL_NEOMAGIC_NM2360:
1926         case FB_ACCEL_NEOMAGIC_NM2380:
1927                 CursorMem = 1024;
1928                 CursorOff = 0x1000;
1929
1930                 par->neo2200 = (Neo2200 __iomem *) par->mmio_vbase;
1931                 break;
1932         }
1933 /*
1934         info->sprite.size = CursorMem;
1935         info->sprite.scan_align = 1;
1936         info->sprite.buf_align = 1;
1937         info->sprite.flags = FB_PIXMAP_IO;
1938         info->sprite.outbuf = neofb_draw_cursor;
1939 */
1940         par->maxClock = maxClock;
1941         par->cursorOff = CursorOff;
1942         return videoRam * 1024;
1943 }
1944
1945
1946 static struct fb_info *__devinit neo_alloc_fb_info(struct pci_dev *dev, const struct
1947                                                    pci_device_id *id)
1948 {
1949         struct fb_info *info;
1950         struct neofb_par *par;
1951
1952         info = framebuffer_alloc(sizeof(struct neofb_par), &dev->dev);
1953
1954         if (!info)
1955                 return NULL;
1956
1957         par = info->par;
1958
1959         info->fix.accel = id->driver_data;
1960
1961         mutex_init(&par->open_lock);
1962         par->pci_burst = !nopciburst;
1963         par->lcd_stretch = !nostretch;
1964         par->libretto = libretto;
1965
1966         par->internal_display = internal;
1967         par->external_display = external;
1968         info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1969
1970         switch (info->fix.accel) {
1971         case FB_ACCEL_NEOMAGIC_NM2070:
1972                 snprintf(info->fix.id, sizeof(info->fix.id),
1973                                 "MagicGraph 128");
1974                 break;
1975         case FB_ACCEL_NEOMAGIC_NM2090:
1976                 snprintf(info->fix.id, sizeof(info->fix.id),
1977                                 "MagicGraph 128V");
1978                 break;
1979         case FB_ACCEL_NEOMAGIC_NM2093:
1980                 snprintf(info->fix.id, sizeof(info->fix.id),
1981                                 "MagicGraph 128ZV");
1982                 break;
1983         case FB_ACCEL_NEOMAGIC_NM2097:
1984                 snprintf(info->fix.id, sizeof(info->fix.id),
1985                                 "MagicGraph 128ZV+");
1986                 break;
1987         case FB_ACCEL_NEOMAGIC_NM2160:
1988                 snprintf(info->fix.id, sizeof(info->fix.id),
1989                                 "MagicGraph 128XD");
1990                 break;
1991         case FB_ACCEL_NEOMAGIC_NM2200:
1992                 snprintf(info->fix.id, sizeof(info->fix.id),
1993                                 "MagicGraph 256AV");
1994                 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
1995                                FBINFO_HWACCEL_COPYAREA |
1996                                FBINFO_HWACCEL_FILLRECT;
1997                 break;
1998         case FB_ACCEL_NEOMAGIC_NM2230:
1999                 snprintf(info->fix.id, sizeof(info->fix.id),
2000                                 "MagicGraph 256AV+");
2001                 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2002                                FBINFO_HWACCEL_COPYAREA |
2003                                FBINFO_HWACCEL_FILLRECT;
2004                 break;
2005         case FB_ACCEL_NEOMAGIC_NM2360:
2006                 snprintf(info->fix.id, sizeof(info->fix.id),
2007                                 "MagicGraph 256ZX");
2008                 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2009                                FBINFO_HWACCEL_COPYAREA |
2010                                FBINFO_HWACCEL_FILLRECT;
2011                 break;
2012         case FB_ACCEL_NEOMAGIC_NM2380:
2013                 snprintf(info->fix.id, sizeof(info->fix.id),
2014                                 "MagicGraph 256XL+");
2015                 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2016                                FBINFO_HWACCEL_COPYAREA |
2017                                FBINFO_HWACCEL_FILLRECT;
2018                 break;
2019         }
2020
2021         info->fix.type = FB_TYPE_PACKED_PIXELS;
2022         info->fix.type_aux = 0;
2023         info->fix.xpanstep = 0;
2024         info->fix.ypanstep = 4;
2025         info->fix.ywrapstep = 0;
2026         info->fix.accel = id->driver_data;
2027
2028         info->fbops = &neofb_ops;
2029         info->pseudo_palette = par->palette;
2030         return info;
2031 }
2032
2033 static void neo_free_fb_info(struct fb_info *info)
2034 {
2035         if (info) {
2036                 /*
2037                  * Free the colourmap
2038                  */
2039                 fb_dealloc_cmap(&info->cmap);
2040                 framebuffer_release(info);
2041         }
2042 }
2043
2044 /* --------------------------------------------------------------------- */
2045
2046 static int __devinit neofb_probe(struct pci_dev *dev,
2047                                  const struct pci_device_id *id)
2048 {
2049         struct fb_info *info;
2050         u_int h_sync, v_sync;
2051         int video_len, err;
2052
2053         DBG("neofb_probe");
2054
2055         err = pci_enable_device(dev);
2056         if (err)
2057                 return err;
2058
2059         err = -ENOMEM;
2060         info = neo_alloc_fb_info(dev, id);
2061         if (!info)
2062                 return err;
2063
2064         err = neo_map_mmio(info, dev);
2065         if (err)
2066                 goto err_map_mmio;
2067
2068         err = neo_scan_monitor(info);
2069         if (err)
2070                 goto err_scan_monitor;
2071
2072         video_len = neo_init_hw(info);
2073         if (video_len < 0) {
2074                 err = video_len;
2075                 goto err_init_hw;
2076         }
2077
2078         err = neo_map_video(info, dev, video_len);
2079         if (err)
2080                 goto err_init_hw;
2081
2082         if (!fb_find_mode(&info->var, info, mode_option, NULL, 0,
2083                         info->monspecs.modedb, 16)) {
2084                 printk(KERN_ERR "neofb: Unable to find usable video mode.\n");
2085                 goto err_map_video;
2086         }
2087
2088         /*
2089          * Calculate the hsync and vsync frequencies.  Note that
2090          * we split the 1e12 constant up so that we can preserve
2091          * the precision and fit the results into 32-bit registers.
2092          *  (1953125000 * 512 = 1e12)
2093          */
2094         h_sync = 1953125000 / info->var.pixclock;
2095         h_sync =
2096             h_sync * 512 / (info->var.xres + info->var.left_margin +
2097                             info->var.right_margin + info->var.hsync_len);
2098         v_sync =
2099             h_sync / (info->var.yres + info->var.upper_margin +
2100                       info->var.lower_margin + info->var.vsync_len);
2101
2102         printk(KERN_INFO "neofb v" NEOFB_VERSION
2103                ": %dkB VRAM, using %dx%d, %d.%03dkHz, %dHz\n",
2104                info->fix.smem_len >> 10, info->var.xres,
2105                info->var.yres, h_sync / 1000, h_sync % 1000, v_sync);
2106
2107         if (fb_alloc_cmap(&info->cmap, 256, 0) < 0)
2108                 goto err_map_video;
2109
2110         err = register_framebuffer(info);
2111         if (err < 0)
2112                 goto err_reg_fb;
2113
2114         printk(KERN_INFO "fb%d: %s frame buffer device\n",
2115                info->node, info->fix.id);
2116
2117         /*
2118          * Our driver data
2119          */
2120         pci_set_drvdata(dev, info);
2121         return 0;
2122
2123 err_reg_fb:
2124         fb_dealloc_cmap(&info->cmap);
2125 err_map_video:
2126         neo_unmap_video(info);
2127 err_init_hw:
2128         fb_destroy_modedb(info->monspecs.modedb);
2129 err_scan_monitor:
2130         neo_unmap_mmio(info);
2131 err_map_mmio:
2132         neo_free_fb_info(info);
2133         return err;
2134 }
2135
2136 static void __devexit neofb_remove(struct pci_dev *dev)
2137 {
2138         struct fb_info *info = pci_get_drvdata(dev);
2139
2140         DBG("neofb_remove");
2141
2142         if (info) {
2143                 /*
2144                  * If unregister_framebuffer fails, then
2145                  * we will be leaving hooks that could cause
2146                  * oopsen laying around.
2147                  */
2148                 if (unregister_framebuffer(info))
2149                         printk(KERN_WARNING
2150                                "neofb: danger danger!  Oopsen imminent!\n");
2151
2152                 neo_unmap_video(info);
2153                 fb_destroy_modedb(info->monspecs.modedb);
2154                 neo_unmap_mmio(info);
2155                 neo_free_fb_info(info);
2156
2157                 /*
2158                  * Ensure that the driver data is no longer
2159                  * valid.
2160                  */
2161                 pci_set_drvdata(dev, NULL);
2162         }
2163 }
2164
2165 static struct pci_device_id neofb_devices[] = {
2166         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2070,
2167          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2070},
2168
2169         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2090,
2170          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2090},
2171
2172         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2093,
2173          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2093},
2174
2175         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2097,
2176          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2097},
2177
2178         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2160,
2179          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2160},
2180
2181         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2200,
2182          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2200},
2183
2184         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2230,
2185          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2230},
2186
2187         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2360,
2188          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2360},
2189
2190         {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2380,
2191          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2380},
2192
2193         {0, 0, 0, 0, 0, 0, 0}
2194 };
2195
2196 MODULE_DEVICE_TABLE(pci, neofb_devices);
2197
2198 static struct pci_driver neofb_driver = {
2199         .name =         "neofb",
2200         .id_table =     neofb_devices,
2201         .probe =        neofb_probe,
2202         .remove =       __devexit_p(neofb_remove)
2203 };
2204
2205 /* ************************* init in-kernel code ************************** */
2206
2207 #ifndef MODULE
2208 static int __init neofb_setup(char *options)
2209 {
2210         char *this_opt;
2211
2212         DBG("neofb_setup");
2213
2214         if (!options || !*options)
2215                 return 0;
2216
2217         while ((this_opt = strsep(&options, ",")) != NULL) {
2218                 if (!*this_opt)
2219                         continue;
2220
2221                 if (!strncmp(this_opt, "internal", 8))
2222                         internal = 1;
2223                 else if (!strncmp(this_opt, "external", 8))
2224                         external = 1;
2225                 else if (!strncmp(this_opt, "nostretch", 9))
2226                         nostretch = 1;
2227                 else if (!strncmp(this_opt, "nopciburst", 10))
2228                         nopciburst = 1;
2229                 else if (!strncmp(this_opt, "libretto", 8))
2230                         libretto = 1;
2231                 else
2232                         mode_option = this_opt;
2233         }
2234         return 0;
2235 }
2236 #endif  /*  MODULE  */
2237
2238 static int __init neofb_init(void)
2239 {
2240 #ifndef MODULE
2241         char *option = NULL;
2242
2243         if (fb_get_options("neofb", &option))
2244                 return -ENODEV;
2245         neofb_setup(option);
2246 #endif
2247         return pci_register_driver(&neofb_driver);
2248 }
2249
2250 module_init(neofb_init);
2251
2252 #ifdef MODULE
2253 static void __exit neofb_exit(void)
2254 {
2255         pci_unregister_driver(&neofb_driver);
2256 }
2257
2258 module_exit(neofb_exit);
2259 #endif                          /* MODULE */