drivers/video/savage/savagefb_driver.c

   1 /*
   2  * linux/drivers/video/savagefb.c -- S3 Savage Framebuffer Driver
   3  *
   4  * Copyright (c) 2001-2002  Denis Oliver Kropp <dok@directfb.org>
   5  *                          Sven Neumann <neo@directfb.org>
   6  *
   7  *
   8  * Card specific code is based on XFree86's savage driver.
   9  * Framebuffer framework code is based on code of cyber2000fb and tdfxfb.
  10  *
  11  * This file is subject to the terms and conditions of the GNU General
  12  * Public License.  See the file COPYING in the main directory of this
  13  * archive for more details.
  14  *
  15  * 0.4.0 (neo)
  16  *  - hardware accelerated clear and move
  17  *
  18  * 0.3.2 (dok)
  19  *  - wait for vertical retrace before writing to cr67
  20  *    at the beginning of savagefb_set_par
  21  *  - use synchronization registers cr23 and cr26
  22  *
  23  * 0.3.1 (dok)
  24  *  - reset 3D engine
  25  *  - don't return alpha bits for 32bit format
  26  *
  27  * 0.3.0 (dok)
  28  *  - added WaitIdle functions for all Savage types
  29  *  - do WaitIdle before mode switching
  30  *  - code cleanup
  31  *
  32  * 0.2.0 (dok)
  33  *  - first working version
  34  *
  35  *
  36  * TODO
  37  * - clock validations in decode_var
  38  *
  39  * BUGS
  40  * - white margin on bootup
  41  *
  42  */
  43
  44 #include <linux/module.h>
  45 #include <linux/kernel.h>
  46 #include <linux/errno.h>
  47 #include <linux/string.h>
  48 #include <linux/mm.h>
  49 #include <linux/slab.h>
  50 #include <linux/delay.h>
  51 #include <linux/fb.h>
  52 #include <linux/pci.h>
  53 #include <linux/init.h>
  54 #include <linux/console.h>
  55
  56 #include <asm/io.h>
  57 #include <asm/irq.h>
  58 #include <asm/pgtable.h>
  59 #include <asm/system.h>
  60
  61 #ifdef CONFIG_MTRR
  62 #include <asm/mtrr.h>
  63 #endif
  64
  65 #include "savagefb.h"
  66
  67
  68 #define SAVAGEFB_VERSION "0.4.0_2.6"
  69
  70 /* --------------------------------------------------------------------- */
  71
  72
  73 static char *mode_option __devinitdata = NULL;
  74
  75 #ifdef MODULE
  76
  77 MODULE_AUTHOR("(c) 2001-2002  Denis Oliver Kropp <dok@directfb.org>");
  78 MODULE_LICENSE("GPL");
  79 MODULE_DESCRIPTION("FBDev driver for S3 Savage PCI/AGP Chips");
  80
  81 #endif
  82
  83
  84 /* --------------------------------------------------------------------- */
  85
  86 static void vgaHWSeqReset(struct savagefb_par *par, int start)
  87 {
  88         if (start)
  89                 VGAwSEQ(0x00, 0x01, par);       /* Synchronous Reset */
  90         else
  91                 VGAwSEQ(0x00, 0x03, par);       /* End Reset */
  92 }
  93
  94 static void vgaHWProtect(struct savagefb_par *par, int on)
  95 {
  96         unsigned char tmp;
  97
  98         if (on) {
  99                 /*
 100                  * Turn off screen and disable sequencer.
 101                  */
 102                 tmp = VGArSEQ(0x01, par);
 103
 104                 vgaHWSeqReset(par, 1);          /* start synchronous reset */
 105                 VGAwSEQ(0x01, tmp | 0x20, par);/* disable the display */
 106
 107                 VGAenablePalette(par);
 108         } else {
 109                 /*
 110                  * Reenable sequencer, then turn on screen.
 111                  */
 112
 113                 tmp = VGArSEQ(0x01, par);
 114
 115                 VGAwSEQ(0x01, tmp & ~0x20, par);/* reenable display */
 116                 vgaHWSeqReset(par, 0);          /* clear synchronous reset */
 117
 118                 VGAdisablePalette(par);
 119         }
 120 }
 121
 122 static void vgaHWRestore(struct savagefb_par  *par, struct savage_reg *reg)
 123 {
 124         int i;
 125
 126         VGAwMISC(reg->MiscOutReg, par);
 127
 128         for (i = 1; i < 5; i++)
 129                 VGAwSEQ(i, reg->Sequencer[i], par);
 130
 131         /* Ensure CRTC registers 0-7 are unlocked by clearing bit 7 or
 132            CRTC[17] */
 133         VGAwCR(17, reg->CRTC[17] & ~0x80, par);
 134
 135         for (i = 0; i < 25; i++)
 136                 VGAwCR(i, reg->CRTC[i], par);
 137
 138         for (i = 0; i < 9; i++)
 139                 VGAwGR(i, reg->Graphics[i], par);
 140
 141         VGAenablePalette(par);
 142
 143         for (i = 0; i < 21; i++)
 144                 VGAwATTR(i, reg->Attribute[i], par);
 145
 146         VGAdisablePalette(par);
 147 }
 148
 149 static void vgaHWInit(struct fb_var_screeninfo *var,
 150                       struct savagefb_par            *par,
 151                       struct xtimings                *timings,
 152                       struct savage_reg              *reg)
 153 {
 154         reg->MiscOutReg = 0x23;
 155
 156         if (!(timings->sync & FB_SYNC_HOR_HIGH_ACT))
 157                 reg->MiscOutReg |= 0x40;
 158
 159         if (!(timings->sync & FB_SYNC_VERT_HIGH_ACT))
 160                 reg->MiscOutReg |= 0x80;
 161
 162         /*
 163          * Time Sequencer
 164          */
 165         reg->Sequencer[0x00] = 0x00;
 166         reg->Sequencer[0x01] = 0x01;
 167         reg->Sequencer[0x02] = 0x0F;
 168         reg->Sequencer[0x03] = 0x00;          /* Font select */
 169         reg->Sequencer[0x04] = 0x0E;          /* Misc */
 170
 171         /*
 172          * CRTC Controller
 173          */
 174         reg->CRTC[0x00] = (timings->HTotal >> 3) - 5;
 175         reg->CRTC[0x01] = (timings->HDisplay >> 3) - 1;
 176         reg->CRTC[0x02] = (timings->HSyncStart >> 3) - 1;
 177         reg->CRTC[0x03] = (((timings->HSyncEnd >> 3)  - 1) & 0x1f) | 0x80;
 178         reg->CRTC[0x04] = (timings->HSyncStart >> 3);
 179         reg->CRTC[0x05] = ((((timings->HSyncEnd >> 3) - 1) & 0x20) << 2) |
 180                 (((timings->HSyncEnd >> 3)) & 0x1f);
 181         reg->CRTC[0x06] = (timings->VTotal - 2) & 0xFF;
 182         reg->CRTC[0x07] = (((timings->VTotal - 2) & 0x100) >> 8) |
 183                 (((timings->VDisplay - 1) & 0x100) >> 7) |
 184                 ((timings->VSyncStart & 0x100) >> 6) |
 185                 (((timings->VSyncStart - 1) & 0x100) >> 5) |
 186                 0x10 |
 187                 (((timings->VTotal - 2) & 0x200) >> 4) |
 188                 (((timings->VDisplay - 1) & 0x200) >> 3) |
 189                 ((timings->VSyncStart & 0x200) >> 2);
 190         reg->CRTC[0x08] = 0x00;
 191         reg->CRTC[0x09] = (((timings->VSyncStart - 1) & 0x200) >> 4) | 0x40;
 192
 193         if (timings->dblscan)
 194                 reg->CRTC[0x09] |= 0x80;
 195
 196         reg->CRTC[0x0a] = 0x00;
 197         reg->CRTC[0x0b] = 0x00;
 198         reg->CRTC[0x0c] = 0x00;
 199         reg->CRTC[0x0d] = 0x00;
 200         reg->CRTC[0x0e] = 0x00;
 201         reg->CRTC[0x0f] = 0x00;
 202         reg->CRTC[0x10] = timings->VSyncStart & 0xff;
 203         reg->CRTC[0x11] = (timings->VSyncEnd & 0x0f) | 0x20;
 204         reg->CRTC[0x12] = (timings->VDisplay - 1) & 0xff;
 205         reg->CRTC[0x13] = var->xres_virtual >> 4;
 206         reg->CRTC[0x14] = 0x00;
 207         reg->CRTC[0x15] = (timings->VSyncStart - 1) & 0xff;
 208         reg->CRTC[0x16] = (timings->VSyncEnd - 1) & 0xff;
 209         reg->CRTC[0x17] = 0xc3;
 210         reg->CRTC[0x18] = 0xff;
 211
 212         /*
 213          * are these unnecessary?
 214          * vgaHWHBlankKGA(mode, regp, 0, KGA_FIX_OVERSCAN|KGA_ENABLE_ON_ZERO);
 215          * vgaHWVBlankKGA(mode, regp, 0, KGA_FIX_OVERSCAN|KGA_ENABLE_ON_ZERO);
 216          */
 217
 218         /*
 219          * Graphics Display Controller
 220          */
 221         reg->Graphics[0x00] = 0x00;
 222         reg->Graphics[0x01] = 0x00;
 223         reg->Graphics[0x02] = 0x00;
 224         reg->Graphics[0x03] = 0x00;
 225         reg->Graphics[0x04] = 0x00;
 226         reg->Graphics[0x05] = 0x40;
 227         reg->Graphics[0x06] = 0x05;   /* only map 64k VGA memory !!!! */
 228         reg->Graphics[0x07] = 0x0F;
 229         reg->Graphics[0x08] = 0xFF;
 230
 231
 232         reg->Attribute[0x00]  = 0x00; /* standard colormap translation */
 233         reg->Attribute[0x01]  = 0x01;
 234         reg->Attribute[0x02]  = 0x02;
 235         reg->Attribute[0x03]  = 0x03;
 236         reg->Attribute[0x04]  = 0x04;
 237         reg->Attribute[0x05]  = 0x05;
 238         reg->Attribute[0x06]  = 0x06;
 239         reg->Attribute[0x07]  = 0x07;
 240         reg->Attribute[0x08]  = 0x08;
 241         reg->Attribute[0x09]  = 0x09;
 242         reg->Attribute[0x0a] = 0x0A;
 243         reg->Attribute[0x0b] = 0x0B;
 244         reg->Attribute[0x0c] = 0x0C;
 245         reg->Attribute[0x0d] = 0x0D;
 246         reg->Attribute[0x0e] = 0x0E;
 247         reg->Attribute[0x0f] = 0x0F;
 248         reg->Attribute[0x10] = 0x41;
 249         reg->Attribute[0x11] = 0xFF;
 250         reg->Attribute[0x12] = 0x0F;
 251         reg->Attribute[0x13] = 0x00;
 252         reg->Attribute[0x14] = 0x00;
 253 }
 254
 255 /* -------------------- Hardware specific routines ------------------------- */
 256
 257 /*
 258  * Hardware Acceleration for SavageFB
 259  */
 260
 261 /* Wait for fifo space */
 262 static void
 263 savage3D_waitfifo(struct savagefb_par *par, int space)
 264 {
 265         int slots = MAXFIFO - space;
 266
 267         while ((savage_in32(0x48C00, par) & 0x0000ffff) > slots);
 268 }
 269
 270 static void
 271 savage4_waitfifo(struct savagefb_par *par, int space)
 272 {
 273         int slots = MAXFIFO - space;
 274
 275         while ((savage_in32(0x48C60, par) & 0x001fffff) > slots);
 276 }
 277
 278 static void
 279 savage2000_waitfifo(struct savagefb_par *par, int space)
 280 {
 281         int slots = MAXFIFO - space;
 282
 283         while ((savage_in32(0x48C60, par) & 0x0000ffff) > slots);
 284 }
 285
 286 /* Wait for idle accelerator */
 287 static void
 288 savage3D_waitidle(struct savagefb_par *par)
 289 {
 290         while ((savage_in32(0x48C00, par) & 0x0008ffff) != 0x80000);
 291 }
 292
 293 static void
 294 savage4_waitidle(struct savagefb_par *par)
 295 {
 296         while ((savage_in32(0x48C60, par) & 0x00a00000) != 0x00a00000);
 297 }
 298
 299 static void
 300 savage2000_waitidle(struct savagefb_par *par)
 301 {
 302         while ((savage_in32(0x48C60, par) & 0x009fffff));
 303 }
 304
 305 #ifdef CONFIG_FB_SAVAGE_ACCEL
 306 static void
 307 SavageSetup2DEngine(struct savagefb_par  *par)
 308 {
 309         unsigned long GlobalBitmapDescriptor;
 310
 311         GlobalBitmapDescriptor = 1 | 8 | BCI_BD_BW_DISABLE;
 312         BCI_BD_SET_BPP(GlobalBitmapDescriptor, par->depth);
 313         BCI_BD_SET_STRIDE(GlobalBitmapDescriptor, par->vwidth);
 314
 315         switch(par->chip) {
 316         case S3_SAVAGE3D:
 317         case S3_SAVAGE_MX:
 318                 /* Disable BCI */
 319                 savage_out32(0x48C18, savage_in32(0x48C18, par) & 0x3FF0, par);
 320                 /* Setup BCI command overflow buffer */
 321                 savage_out32(0x48C14,
 322                              (par->cob_offset >> 11) | (par->cob_index << 29),
 323                              par);
 324                 /* Program shadow status update. */
 325                 savage_out32(0x48C10, 0x78207220, par);
 326                 savage_out32(0x48C0C, 0, par);
 327                 /* Enable BCI and command overflow buffer */
 328                 savage_out32(0x48C18, savage_in32(0x48C18, par) | 0x0C, par);
 329                 break;
 330         case S3_SAVAGE4:
 331         case S3_PROSAVAGE:
 332         case S3_SUPERSAVAGE:
 333                 /* Disable BCI */
 334                 savage_out32(0x48C18, savage_in32(0x48C18, par) & 0x3FF0, par);
 335                 /* Program shadow status update */
 336                 savage_out32(0x48C10, 0x00700040, par);
 337                 savage_out32(0x48C0C, 0, par);
 338                 /* Enable BCI without the COB */
 339                 savage_out32(0x48C18, savage_in32(0x48C18, par) | 0x08, par);
 340                 break;
 341         case S3_SAVAGE2000:
 342                 /* Disable BCI */
 343                 savage_out32(0x48C18, 0, par);
 344                 /* Setup BCI command overflow buffer */
 345                 savage_out32(0x48C18,
 346                              (par->cob_offset >> 7) | (par->cob_index),
 347                              par);
 348                 /* Disable shadow status update */
 349                 savage_out32(0x48A30, 0, par);
 350                 /* Enable BCI and command overflow buffer */
 351                 savage_out32(0x48C18, savage_in32(0x48C18, par) | 0x00280000,
 352                              par);
 353                 break;
 354             default:
 355                 break;
 356         }
 357         /* Turn on 16-bit register access. */
 358         vga_out8(0x3d4, 0x31, par);
 359         vga_out8(0x3d5, 0x0c, par);
 360
 361         /* Set stride to use GBD. */
 362         vga_out8(0x3d4, 0x50, par);
 363         vga_out8(0x3d5, vga_in8(0x3d5, par) | 0xC1, par);
 364
 365         /* Enable 2D engine. */
 366         vga_out8(0x3d4, 0x40, par);
 367         vga_out8(0x3d5, 0x01, par);
 368
 369         savage_out32(MONO_PAT_0, ~0, par);
 370         savage_out32(MONO_PAT_1, ~0, par);
 371
 372         /* Setup plane masks */
 373         savage_out32(0x8128, ~0, par); /* enable all write planes */
 374         savage_out32(0x812C, ~0, par); /* enable all read planes */
 375         savage_out16(0x8134, 0x27, par);
 376         savage_out16(0x8136, 0x07, par);
 377
 378         /* Now set the GBD */
 379         par->bci_ptr = 0;
 380         par->SavageWaitFifo(par, 4);
 381
 382         BCI_SEND(BCI_CMD_SETREG | (1 << 16) | BCI_GBD1);
 383         BCI_SEND(0);
 384         BCI_SEND(BCI_CMD_SETREG | (1 << 16) | BCI_GBD2);
 385         BCI_SEND(GlobalBitmapDescriptor);
 386
 387         /*
 388          * I don't know why, sending this twice fixes the initial black screen,
 389          * prevents X from crashing at least in Toshiba laptops with SavageIX.
 390          * --Tony
 391          */
 392         par->bci_ptr = 0;
 393         par->SavageWaitFifo(par, 4);
 394
 395         BCI_SEND(BCI_CMD_SETREG | (1 << 16) | BCI_GBD1);
 396         BCI_SEND(0);
 397         BCI_SEND(BCI_CMD_SETREG | (1 << 16) | BCI_GBD2);
 398         BCI_SEND(GlobalBitmapDescriptor);
 399 }
 400
 401 static void savagefb_set_clip(struct fb_info *info)
 402 {
 403         struct savagefb_par *par = info->par;
 404         int cmd;
 405
 406         cmd = BCI_CMD_NOP | BCI_CMD_CLIP_NEW;
 407         par->bci_ptr = 0;
 408         par->SavageWaitFifo(par,3);
 409         BCI_SEND(cmd);
 410         BCI_SEND(BCI_CLIP_TL(0, 0));
 411         BCI_SEND(BCI_CLIP_BR(0xfff, 0xfff));
 412 }
 413 #else
 414 static void SavageSetup2DEngine(struct savagefb_par  *par) {}
 415
 416 #endif
 417
 418 static void SavageCalcClock(long freq, int min_m, int min_n1, int max_n1,
 419                             int min_n2, int max_n2, long freq_min,
 420                             long freq_max, unsigned int *mdiv,
 421                             unsigned int *ndiv, unsigned int *r)
 422 {
 423         long diff, best_diff;
 424         unsigned int m;
 425         unsigned char n1, n2, best_n1=16+2, best_n2=2, best_m=125+2;
 426
 427         if (freq < freq_min / (1 << max_n2)) {
 428                 printk(KERN_ERR "invalid frequency %ld Khz\n", freq);
 429                 freq = freq_min / (1 << max_n2);
 430         }
 431         if (freq > freq_max / (1 << min_n2)) {
 432                 printk(KERN_ERR "invalid frequency %ld Khz\n", freq);
 433                 freq = freq_max / (1 << min_n2);
 434         }
 435
 436         /* work out suitable timings */
 437         best_diff = freq;
 438
 439         for (n2=min_n2; n2<=max_n2; n2++) {
 440                 for (n1=min_n1+2; n1<=max_n1+2; n1++) {
 441                         m = (freq * n1 * (1 << n2) + HALF_BASE_FREQ) /
 442                                 BASE_FREQ;
 443                         if (m < min_m+2 || m > 127+2)
 444                                 continue;
 445                         if ((m * BASE_FREQ >= freq_min * n1) &&
 446                             (m * BASE_FREQ <= freq_max * n1)) {
 447                                 diff = freq * (1 << n2) * n1 - BASE_FREQ * m;
 448                                 if (diff < 0)
 449                                         diff = -diff;
 450                                 if (diff < best_diff) {
 451                                         best_diff = diff;
 452                                         best_m = m;
 453                                         best_n1 = n1;
 454                                         best_n2 = n2;
 455                                 }
 456                         }
 457                 }
 458         }
 459
 460         *ndiv = best_n1 - 2;
 461         *r = best_n2;
 462         *mdiv = best_m - 2;
 463 }
 464
 465 static int common_calc_clock(long freq, int min_m, int min_n1, int max_n1,
 466                              int min_n2, int max_n2, long freq_min,
 467                              long freq_max, unsigned char *mdiv,
 468                              unsigned char *ndiv)
 469 {
 470         long diff, best_diff;
 471         unsigned int m;
 472         unsigned char n1, n2;
 473         unsigned char best_n1 = 16+2, best_n2 = 2, best_m = 125+2;
 474
 475         best_diff = freq;
 476
 477         for (n2 = min_n2; n2 <= max_n2; n2++) {
 478                 for (n1 = min_n1+2; n1 <= max_n1+2; n1++) {
 479                         m = (freq * n1 * (1 << n2) + HALF_BASE_FREQ) /
 480                                 BASE_FREQ;
 481                         if (m < min_m + 2 || m > 127+2)
 482                                 continue;
 483                         if ((m * BASE_FREQ >= freq_min * n1) &&
 484                             (m * BASE_FREQ <= freq_max * n1)) {
 485                                 diff = freq * (1 << n2) * n1 - BASE_FREQ * m;
 486                                 if (diff < 0)
 487                                         diff = -diff;
 488                                 if (diff < best_diff) {
 489                                         best_diff = diff;
 490                                         best_m = m;
 491                                         best_n1 = n1;
 492                                         best_n2 = n2;
 493                                 }
 494                         }
 495                 }
 496         }
 497
 498         if (max_n1 == 63)
 499                 *ndiv = (best_n1 - 2) | (best_n2 << 6);
 500         else
 501                 *ndiv = (best_n1 - 2) | (best_n2 << 5);
 502
 503         *mdiv = best_m - 2;
 504
 505         return 0;
 506 }
 507
 508 #ifdef SAVAGEFB_DEBUG
 509 /* This function is used to debug, it prints out the contents of s3 regs */
 510
 511 static void SavagePrintRegs(struct savagefb_par *par)
 512 {
 513         unsigned char i;
 514         int vgaCRIndex = 0x3d4;
 515         int vgaCRReg = 0x3d5;
 516
 517         printk(KERN_DEBUG "SR    x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC xD xE "
 518                "xF");
 519
 520         for (i = 0; i < 0x70; i++) {
 521                 if (!(i % 16))
 522                         printk(KERN_DEBUG "\nSR%xx ", i >> 4);
 523                 vga_out8(0x3c4, i, par);
 524                 printk(KERN_DEBUG " %02x", vga_in8(0x3c5, par));
 525         }
 526
 527         printk(KERN_DEBUG "\n\nCR    x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC "
 528                "xD xE xF");
 529
 530         for (i = 0; i < 0xB7; i++) {
 531                 if (!(i % 16))
 532                         printk(KERN_DEBUG "\nCR%xx ", i >> 4);
 533                 vga_out8(vgaCRIndex, i, par);
 534                 printk(KERN_DEBUG " %02x", vga_in8(vgaCRReg, par));
 535         }
 536
 537         printk(KERN_DEBUG "\n\n");
 538 }
 539 #endif
 540
 541 /* --------------------------------------------------------------------- */
 542
 543 static void savage_get_default_par(struct savagefb_par *par, struct savage_reg *reg)
 544 {
 545         unsigned char cr3a, cr53, cr66;
 546
 547         vga_out16(0x3d4, 0x4838, par);
 548         vga_out16(0x3d4, 0xa039, par);
 549         vga_out16(0x3c4, 0x0608, par);
 550
 551         vga_out8(0x3d4, 0x66, par);
 552         cr66 = vga_in8(0x3d5, par);
 553         vga_out8(0x3d5, cr66 | 0x80, par);
 554         vga_out8(0x3d4, 0x3a, par);
 555         cr3a = vga_in8(0x3d5, par);
 556         vga_out8(0x3d5, cr3a | 0x80, par);
 557         vga_out8(0x3d4, 0x53, par);
 558         cr53 = vga_in8(0x3d5, par);
 559         vga_out8(0x3d5, cr53 & 0x7f, par);
 560
 561         vga_out8(0x3d4, 0x66, par);
 562         vga_out8(0x3d5, cr66, par);
 563         vga_out8(0x3d4, 0x3a, par);
 564         vga_out8(0x3d5, cr3a, par);
 565
 566         vga_out8(0x3d4, 0x66, par);
 567         vga_out8(0x3d5, cr66, par);
 568         vga_out8(0x3d4, 0x3a, par);
 569         vga_out8(0x3d5, cr3a, par);
 570
 571         /* unlock extended seq regs */
 572         vga_out8(0x3c4, 0x08, par);
 573         reg->SR08 = vga_in8(0x3c5, par);
 574         vga_out8(0x3c5, 0x06, par);
 575
 576         /* now save all the extended regs we need */
 577         vga_out8(0x3d4, 0x31, par);
 578         reg->CR31 = vga_in8(0x3d5, par);
 579         vga_out8(0x3d4, 0x32, par);
 580         reg->CR32 = vga_in8(0x3d5, par);
 581         vga_out8(0x3d4, 0x34, par);
 582         reg->CR34 = vga_in8(0x3d5, par);
 583         vga_out8(0x3d4, 0x36, par);
 584         reg->CR36 = vga_in8(0x3d5, par);
 585         vga_out8(0x3d4, 0x3a, par);
 586         reg->CR3A = vga_in8(0x3d5, par);
 587         vga_out8(0x3d4, 0x40, par);
 588         reg->CR40 = vga_in8(0x3d5, par);
 589         vga_out8(0x3d4, 0x42, par);
 590         reg->CR42 = vga_in8(0x3d5, par);
 591         vga_out8(0x3d4, 0x45, par);
 592         reg->CR45 = vga_in8(0x3d5, par);
 593         vga_out8(0x3d4, 0x50, par);
 594         reg->CR50 = vga_in8(0x3d5, par);
 595         vga_out8(0x3d4, 0x51, par);
 596         reg->CR51 = vga_in8(0x3d5, par);
 597         vga_out8(0x3d4, 0x53, par);
 598         reg->CR53 = vga_in8(0x3d5, par);
 599         vga_out8(0x3d4, 0x58, par);
 600         reg->CR58 = vga_in8(0x3d5, par);
 601         vga_out8(0x3d4, 0x60, par);
 602         reg->CR60 = vga_in8(0x3d5, par);
 603         vga_out8(0x3d4, 0x66, par);
 604         reg->CR66 = vga_in8(0x3d5, par);
 605         vga_out8(0x3d4, 0x67, par);
 606         reg->CR67 = vga_in8(0x3d5, par);
 607         vga_out8(0x3d4, 0x68, par);
 608         reg->CR68 = vga_in8(0x3d5, par);
 609         vga_out8(0x3d4, 0x69, par);
 610         reg->CR69 = vga_in8(0x3d5, par);
 611         vga_out8(0x3d4, 0x6f, par);
 612         reg->CR6F = vga_in8(0x3d5, par);
 613
 614         vga_out8(0x3d4, 0x33, par);
 615         reg->CR33 = vga_in8(0x3d5, par);
 616         vga_out8(0x3d4, 0x86, par);
 617         reg->CR86 = vga_in8(0x3d5, par);
 618         vga_out8(0x3d4, 0x88, par);
 619         reg->CR88 = vga_in8(0x3d5, par);
 620         vga_out8(0x3d4, 0x90, par);
 621         reg->CR90 = vga_in8(0x3d5, par);
 622         vga_out8(0x3d4, 0x91, par);
 623         reg->CR91 = vga_in8(0x3d5, par);
 624         vga_out8(0x3d4, 0xb0, par);
 625         reg->CRB0 = vga_in8(0x3d5, par) | 0x80;
 626
 627         /* extended mode timing regs */
 628         vga_out8(0x3d4, 0x3b, par);
 629         reg->CR3B = vga_in8(0x3d5, par);
 630         vga_out8(0x3d4, 0x3c, par);
 631         reg->CR3C = vga_in8(0x3d5, par);
 632         vga_out8(0x3d4, 0x43, par);
 633         reg->CR43 = vga_in8(0x3d5, par);
 634         vga_out8(0x3d4, 0x5d, par);
 635         reg->CR5D = vga_in8(0x3d5, par);
 636         vga_out8(0x3d4, 0x5e, par);
 637         reg->CR5E = vga_in8(0x3d5, par);
 638         vga_out8(0x3d4, 0x65, par);
 639         reg->CR65 = vga_in8(0x3d5, par);
 640
 641         /* save seq extended regs for DCLK PLL programming */
 642         vga_out8(0x3c4, 0x0e, par);
 643         reg->SR0E = vga_in8(0x3c5, par);
 644         vga_out8(0x3c4, 0x0f, par);
 645         reg->SR0F = vga_in8(0x3c5, par);
 646         vga_out8(0x3c4, 0x10, par);
 647         reg->SR10 = vga_in8(0x3c5, par);
 648         vga_out8(0x3c4, 0x11, par);
 649         reg->SR11 = vga_in8(0x3c5, par);
 650         vga_out8(0x3c4, 0x12, par);
 651         reg->SR12 = vga_in8(0x3c5, par);
 652         vga_out8(0x3c4, 0x13, par);
 653         reg->SR13 = vga_in8(0x3c5, par);
 654         vga_out8(0x3c4, 0x29, par);
 655         reg->SR29 = vga_in8(0x3c5, par);
 656
 657         vga_out8(0x3c4, 0x15, par);
 658         reg->SR15 = vga_in8(0x3c5, par);
 659         vga_out8(0x3c4, 0x30, par);
 660         reg->SR30 = vga_in8(0x3c5, par);
 661         vga_out8(0x3c4, 0x18, par);
 662         reg->SR18 = vga_in8(0x3c5, par);
 663
 664         /* Save flat panel expansion regsters. */
 665         if (par->chip == S3_SAVAGE_MX) {
 666                 int i;
 667
 668                 for (i = 0; i < 8; i++) {
 669                         vga_out8(0x3c4, 0x54+i, par);
 670                         reg->SR54[i] = vga_in8(0x3c5, par);
 671                 }
 672         }
 673
 674         vga_out8(0x3d4, 0x66, par);
 675         cr66 = vga_in8(0x3d5, par);
 676         vga_out8(0x3d5, cr66 | 0x80, par);
 677         vga_out8(0x3d4, 0x3a, par);
 678         cr3a = vga_in8(0x3d5, par);
 679         vga_out8(0x3d5, cr3a | 0x80, par);
 680
 681         /* now save MIU regs */
 682         if (par->chip != S3_SAVAGE_MX) {
 683                 reg->MMPR0 = savage_in32(FIFO_CONTROL_REG, par);
 684                 reg->MMPR1 = savage_in32(MIU_CONTROL_REG, par);
 685                 reg->MMPR2 = savage_in32(STREAMS_TIMEOUT_REG, par);
 686                 reg->MMPR3 = savage_in32(MISC_TIMEOUT_REG, par);
 687         }
 688
 689         vga_out8(0x3d4, 0x3a, par);
 690         vga_out8(0x3d5, cr3a, par);
 691         vga_out8(0x3d4, 0x66, par);
 692         vga_out8(0x3d5, cr66, par);
 693 }
 694
 695 static void savage_set_default_par(struct savagefb_par *par,
 696                                 struct savage_reg *reg)
 697 {
 698         unsigned char cr3a, cr53, cr66;
 699
 700         vga_out16(0x3d4, 0x4838, par);
 701         vga_out16(0x3d4, 0xa039, par);
 702         vga_out16(0x3c4, 0x0608, par);
 703
 704         vga_out8(0x3d4, 0x66, par);
 705         cr66 = vga_in8(0x3d5, par);
 706         vga_out8(0x3d5, cr66 | 0x80, par);
 707         vga_out8(0x3d4, 0x3a, par);
 708         cr3a = vga_in8(0x3d5, par);
 709         vga_out8(0x3d5, cr3a | 0x80, par);
 710         vga_out8(0x3d4, 0x53, par);
 711         cr53 = vga_in8(0x3d5, par);
 712         vga_out8(0x3d5, cr53 & 0x7f, par);
 713
 714         vga_out8(0x3d4, 0x66, par);
 715         vga_out8(0x3d5, cr66, par);
 716         vga_out8(0x3d4, 0x3a, par);
 717         vga_out8(0x3d5, cr3a, par);
 718
 719         vga_out8(0x3d4, 0x66, par);
 720         vga_out8(0x3d5, cr66, par);
 721         vga_out8(0x3d4, 0x3a, par);
 722         vga_out8(0x3d5, cr3a, par);
 723
 724         /* unlock extended seq regs */
 725         vga_out8(0x3c4, 0x08, par);
 726         vga_out8(0x3c5, reg->SR08, par);
 727         vga_out8(0x3c5, 0x06, par);
 728
 729         /* now restore all the extended regs we need */
 730         vga_out8(0x3d4, 0x31, par);
 731         vga_out8(0x3d5, reg->CR31, par);
 732         vga_out8(0x3d4, 0x32, par);
 733         vga_out8(0x3d5, reg->CR32, par);
 734         vga_out8(0x3d4, 0x34, par);
 735         vga_out8(0x3d5, reg->CR34, par);
 736         vga_out8(0x3d4, 0x36, par);
 737         vga_out8(0x3d5,reg->CR36, par);
 738         vga_out8(0x3d4, 0x3a, par);
 739         vga_out8(0x3d5, reg->CR3A, par);
 740         vga_out8(0x3d4, 0x40, par);
 741         vga_out8(0x3d5, reg->CR40, par);
 742         vga_out8(0x3d4, 0x42, par);
 743         vga_out8(0x3d5, reg->CR42, par);
 744         vga_out8(0x3d4, 0x45, par);
 745         vga_out8(0x3d5, reg->CR45, par);
 746         vga_out8(0x3d4, 0x50, par);
 747         vga_out8(0x3d5, reg->CR50, par);
 748         vga_out8(0x3d4, 0x51, par);
 749         vga_out8(0x3d5, reg->CR51, par);
 750         vga_out8(0x3d4, 0x53, par);
 751         vga_out8(0x3d5, reg->CR53, par);
 752         vga_out8(0x3d4, 0x58, par);
 753         vga_out8(0x3d5, reg->CR58, par);
 754         vga_out8(0x3d4, 0x60, par);
 755         vga_out8(0x3d5, reg->CR60, par);
 756         vga_out8(0x3d4, 0x66, par);
 757         vga_out8(0x3d5, reg->CR66, par);
 758         vga_out8(0x3d4, 0x67, par);
 759         vga_out8(0x3d5, reg->CR67, par);
 760         vga_out8(0x3d4, 0x68, par);
 761         vga_out8(0x3d5, reg->CR68, par);
 762         vga_out8(0x3d4, 0x69, par);
 763         vga_out8(0x3d5, reg->CR69, par);
 764         vga_out8(0x3d4, 0x6f, par);
 765         vga_out8(0x3d5, reg->CR6F, par);
 766
 767         vga_out8(0x3d4, 0x33, par);
 768         vga_out8(0x3d5, reg->CR33, par);
 769         vga_out8(0x3d4, 0x86, par);
 770         vga_out8(0x3d5, reg->CR86, par);
 771         vga_out8(0x3d4, 0x88, par);
 772         vga_out8(0x3d5, reg->CR88, par);
 773         vga_out8(0x3d4, 0x90, par);
 774         vga_out8(0x3d5, reg->CR90, par);
 775         vga_out8(0x3d4, 0x91, par);
 776         vga_out8(0x3d5, reg->CR91, par);
 777         vga_out8(0x3d4, 0xb0, par);
 778         vga_out8(0x3d5, reg->CRB0, par);
 779
 780         /* extended mode timing regs */
 781         vga_out8(0x3d4, 0x3b, par);
 782         vga_out8(0x3d5, reg->CR3B, par);
 783         vga_out8(0x3d4, 0x3c, par);
 784         vga_out8(0x3d5, reg->CR3C, par);
 785         vga_out8(0x3d4, 0x43, par);
 786         vga_out8(0x3d5, reg->CR43, par);
 787         vga_out8(0x3d4, 0x5d, par);
 788         vga_out8(0x3d5, reg->CR5D, par);
 789         vga_out8(0x3d4, 0x5e, par);
 790         vga_out8(0x3d5, reg->CR5E, par);
 791         vga_out8(0x3d4, 0x65, par);
 792         vga_out8(0x3d5, reg->CR65, par);
 793
 794         /* save seq extended regs for DCLK PLL programming */
 795         vga_out8(0x3c4, 0x0e, par);
 796         vga_out8(0x3c5, reg->SR0E, par);
 797         vga_out8(0x3c4, 0x0f, par);
 798         vga_out8(0x3c5, reg->SR0F, par);
 799         vga_out8(0x3c4, 0x10, par);
 800         vga_out8(0x3c5, reg->SR10, par);
 801         vga_out8(0x3c4, 0x11, par);
 802         vga_out8(0x3c5, reg->SR11, par);
 803         vga_out8(0x3c4, 0x12, par);
 804         vga_out8(0x3c5, reg->SR12, par);
 805         vga_out8(0x3c4, 0x13, par);
 806         vga_out8(0x3c5, reg->SR13, par);
 807         vga_out8(0x3c4, 0x29, par);
 808         vga_out8(0x3c5, reg->SR29, par);
 809
 810         vga_out8(0x3c4, 0x15, par);
 811         vga_out8(0x3c5, reg->SR15, par);
 812         vga_out8(0x3c4, 0x30, par);
 813         vga_out8(0x3c5, reg->SR30, par);
 814         vga_out8(0x3c4, 0x18, par);
 815         vga_out8(0x3c5, reg->SR18, par);
 816
 817         /* Save flat panel expansion regsters. */
 818         if (par->chip == S3_SAVAGE_MX) {
 819                 int i;
 820
 821                 for (i = 0; i < 8; i++) {
 822                         vga_out8(0x3c4, 0x54+i, par);
 823                         vga_out8(0x3c5, reg->SR54[i], par);
 824                 }
 825         }
 826
 827         vga_out8(0x3d4, 0x66, par);
 828         cr66 = vga_in8(0x3d5, par);
 829         vga_out8(0x3d5, cr66 | 0x80, par);
 830         vga_out8(0x3d4, 0x3a, par);
 831         cr3a = vga_in8(0x3d5, par);
 832         vga_out8(0x3d5, cr3a | 0x80, par);
 833
 834         /* now save MIU regs */
 835         if (par->chip != S3_SAVAGE_MX) {
 836                 savage_out32(FIFO_CONTROL_REG, reg->MMPR0, par);
 837                 savage_out32(MIU_CONTROL_REG, reg->MMPR1, par);
 838                 savage_out32(STREAMS_TIMEOUT_REG, reg->MMPR2, par);
 839                 savage_out32(MISC_TIMEOUT_REG, reg->MMPR3, par);
 840         }
 841
 842         vga_out8(0x3d4, 0x3a, par);
 843         vga_out8(0x3d5, cr3a, par);
 844         vga_out8(0x3d4, 0x66, par);
 845         vga_out8(0x3d5, cr66, par);
 846 }
 847
 848 static void savage_update_var(struct fb_var_screeninfo *var,
 849                               const struct fb_videomode *modedb)
 850 {
 851         var->xres = var->xres_virtual = modedb->xres;
 852         var->yres = modedb->yres;
 853         if (var->yres_virtual < var->yres)
 854             var->yres_virtual = var->yres;
 855         var->xoffset = var->yoffset = 0;
 856         var->pixclock = modedb->pixclock;
 857         var->left_margin = modedb->left_margin;
 858         var->right_margin = modedb->right_margin;
 859         var->upper_margin = modedb->upper_margin;
 860         var->lower_margin = modedb->lower_margin;
 861         var->hsync_len = modedb->hsync_len;
 862         var->vsync_len = modedb->vsync_len;
 863         var->sync = modedb->sync;
 864         var->vmode = modedb->vmode;
 865 }
 866
 867 static int savagefb_check_var(struct fb_var_screeninfo   *var,
 868                               struct fb_info *info)
 869 {
 870         struct savagefb_par *par = info->par;
 871         int memlen, vramlen, mode_valid = 0;
 872
 873         DBG("savagefb_check_var");
 874
 875         var->transp.offset = 0;
 876         var->transp.length = 0;
 877         switch (var->bits_per_pixel) {
 878         case 8:
 879                 var->red.offset = var->green.offset =
 880                         var->blue.offset = 0;
 881                 var->red.length = var->green.length =
 882                         var->blue.length = var->bits_per_pixel;
 883                 break;
 884         case 16:
 885                 var->red.offset = 11;
 886                 var->red.length = 5;
 887                 var->green.offset = 5;
 888                 var->green.length = 6;
 889                 var->blue.offset = 0;
 890                 var->blue.length = 5;
 891                 break;
 892         case 32:
 893                 var->transp.offset = 24;
 894                 var->transp.length = 8;
 895                 var->red.offset = 16;
 896                 var->red.length = 8;
 897                 var->green.offset = 8;
 898                 var->green.length = 8;
 899                 var->blue.offset = 0;
 900                 var->blue.length = 8;
 901                 break;
 902
 903         default:
 904                 return -EINVAL;
 905         }
 906
 907         if (!info->monspecs.hfmax || !info->monspecs.vfmax ||
 908             !info->monspecs.dclkmax || !fb_validate_mode(var, info))
 909                 mode_valid = 1;
 910
 911         /* calculate modeline if supported by monitor */
 912         if (!mode_valid && info->monspecs.gtf) {
 913                 if (!fb_get_mode(FB_MAXTIMINGS, 0, var, info))
 914                         mode_valid = 1;
 915         }
 916
 917         if (!mode_valid) {
 918                 const struct fb_videomode *mode;
 919
 920                 mode = fb_find_best_mode(var, &info->modelist);
 921                 if (mode) {
 922                         savage_update_var(var, mode);
 923                         mode_valid = 1;
 924                 }
 925         }
 926
 927         if (!mode_valid && info->monspecs.modedb_len)
 928                 return -EINVAL;
 929
 930         /* Is the mode larger than the LCD panel? */
 931         if (par->SavagePanelWidth &&
 932             (var->xres > par->SavagePanelWidth ||
 933              var->yres > par->SavagePanelHeight)) {
 934                 printk(KERN_INFO "Mode (%dx%d) larger than the LCD panel "
 935                        "(%dx%d)\n", var->xres,  var->yres,
 936                        par->SavagePanelWidth,
 937                        par->SavagePanelHeight);
 938                 return -1;
 939         }
 940
 941         if (var->yres_virtual < var->yres)
 942                 var->yres_virtual = var->yres;
 943         if (var->xres_virtual < var->xres)
 944                 var->xres_virtual = var->xres;
 945
 946         vramlen = info->fix.smem_len;
 947
 948         memlen = var->xres_virtual * var->bits_per_pixel *
 949                 var->yres_virtual / 8;
 950         if (memlen > vramlen) {
 951                 var->yres_virtual = vramlen * 8 /
 952                         (var->xres_virtual * var->bits_per_pixel);
 953                 memlen = var->xres_virtual * var->bits_per_pixel *
 954                         var->yres_virtual / 8;
 955         }
 956
 957         /* we must round yres/xres down, we already rounded y/xres_virtual up
 958            if it was possible. We should return -EINVAL, but I disagree */
 959         if (var->yres_virtual < var->yres)
 960                 var->yres = var->yres_virtual;
 961         if (var->xres_virtual < var->xres)
 962                 var->xres = var->xres_virtual;
 963         if (var->xoffset + var->xres > var->xres_virtual)
 964                 var->xoffset = var->xres_virtual - var->xres;
 965         if (var->yoffset + var->yres > var->yres_virtual)
 966                 var->yoffset = var->yres_virtual - var->yres;
 967
 968         return 0;
 969 }
 970
 971
 972 static int savagefb_decode_var(struct fb_var_screeninfo   *var,
 973                                struct savagefb_par        *par,
 974                                struct savage_reg          *reg)
 975 {
 976         struct xtimings timings;
 977         int width, dclk, i, j; /*, refresh; */
 978         unsigned int m, n, r;
 979         unsigned char tmp = 0;
 980         unsigned int pixclock = var->pixclock;
 981
 982         DBG("savagefb_decode_var");
 983
 984         memset(&timings, 0, sizeof(timings));
 985
 986         if (!pixclock) pixclock = 10000;        /* 10ns = 100MHz */
 987         timings.Clock = 1000000000 / pixclock;
 988         if (timings.Clock < 1) timings.Clock = 1;
 989         timings.dblscan = var->vmode & FB_VMODE_DOUBLE;
 990         timings.interlaced = var->vmode & FB_VMODE_INTERLACED;
 991         timings.HDisplay = var->xres;
 992         timings.HSyncStart = timings.HDisplay + var->right_margin;
 993         timings.HSyncEnd = timings.HSyncStart + var->hsync_len;
 994         timings.HTotal = timings.HSyncEnd + var->left_margin;
 995         timings.VDisplay = var->yres;
 996         timings.VSyncStart = timings.VDisplay + var->lower_margin;
 997         timings.VSyncEnd = timings.VSyncStart + var->vsync_len;
 998         timings.VTotal = timings.VSyncEnd + var->upper_margin;
 999         timings.sync = var->sync;
1000
1001
1002         par->depth  = var->bits_per_pixel;
1003         par->vwidth = var->xres_virtual;
1004
1005         if (var->bits_per_pixel == 16  &&  par->chip == S3_SAVAGE3D) {
1006                 timings.HDisplay *= 2;
1007                 timings.HSyncStart *= 2;
1008                 timings.HSyncEnd *= 2;
1009                 timings.HTotal *= 2;
1010         }
1011
1012         /*
1013          * This will allocate the datastructure and initialize all of the
1014          * generic VGA registers.
1015          */
1016         vgaHWInit(var, par, &timings, reg);
1017
1018         /* We need to set CR67 whether or not we use the BIOS. */
1019
1020         dclk = timings.Clock;
1021         reg->CR67 = 0x00;
1022
1023         switch(var->bits_per_pixel) {
1024         case 8:
1025                 if ((par->chip == S3_SAVAGE2000) && (dclk >= 230000))
1026                         reg->CR67 = 0x10;       /* 8bpp, 2 pixels/clock */
1027                 else
1028                         reg->CR67 = 0x00;       /* 8bpp, 1 pixel/clock */
1029                 break;
1030         case 15:
1031                 if (S3_SAVAGE_MOBILE_SERIES(par->chip) ||
1032                     ((par->chip == S3_SAVAGE2000) && (dclk >= 230000)))
1033                         reg->CR67 = 0x30;       /* 15bpp, 2 pixel/clock */
1034                 else
1035                         reg->CR67 = 0x20;       /* 15bpp, 1 pixels/clock */
1036                 break;
1037         case 16:
1038                 if (S3_SAVAGE_MOBILE_SERIES(par->chip) ||
1039                    ((par->chip == S3_SAVAGE2000) && (dclk >= 230000)))
1040                         reg->CR67 = 0x50;       /* 16bpp, 2 pixel/clock */
1041                 else
1042                         reg->CR67 = 0x40;       /* 16bpp, 1 pixels/clock */
1043                 break;
1044         case 24:
1045                 reg->CR67 = 0x70;
1046                 break;
1047         case 32:
1048                 reg->CR67 = 0xd0;
1049                 break;
1050         }
1051
1052         /*
1053          * Either BIOS use is disabled, or we failed to find a suitable
1054          * match.  Fall back to traditional register-crunching.
1055          */
1056
1057         vga_out8(0x3d4, 0x3a, par);
1058         tmp = vga_in8(0x3d5, par);
1059         if (1 /*FIXME:psav->pci_burst*/)
1060                 reg->CR3A = (tmp & 0x7f) | 0x15;
1061         else
1062                 reg->CR3A = tmp | 0x95;
1063
1064         reg->CR53 = 0x00;
1065         reg->CR31 = 0x8c;
1066         reg->CR66 = 0x89;
1067
1068         vga_out8(0x3d4, 0x58, par);
1069         reg->CR58 = vga_in8(0x3d5, par) & 0x80;
1070         reg->CR58 |= 0x13;
1071
1072         reg->SR15 = 0x03 | 0x80;
1073         reg->SR18 = 0x00;
1074         reg->CR43 = reg->CR45 = reg->CR65 = 0x00;
1075
1076         vga_out8(0x3d4, 0x40, par);
1077         reg->CR40 = vga_in8(0x3d5, par) & ~0x01;
1078
1079         reg->MMPR0 = 0x010400;
1080         reg->MMPR1 = 0x00;
1081         reg->MMPR2 = 0x0808;
1082         reg->MMPR3 = 0x08080810;
1083
1084         SavageCalcClock(dclk, 1, 1, 127, 0, 4, 180000, 360000, &m, &n, &r);
1085         /* m = 107; n = 4; r = 2; */
1086
1087         if (par->MCLK <= 0) {
1088                 reg->SR10 = 255;
1089                 reg->SR11 = 255;
1090         } else {
1091                 common_calc_clock(par->MCLK, 1, 1, 31, 0, 3, 135000, 270000,
1092                                    &reg->SR11, &reg->SR10);
1093                 /*      reg->SR10 = 80; // MCLK == 286000 */
1094                 /*      reg->SR11 = 125; */
1095         }
1096
1097         reg->SR12 = (r << 6) | (n & 0x3f);
1098         reg->SR13 = m & 0xff;
1099         reg->SR29 = (r & 4) | (m & 0x100) >> 5 | (n & 0x40) >> 2;
1100
1101         if (var->bits_per_pixel < 24)
1102                 reg->MMPR0 -= 0x8000;
1103         else
1104                 reg->MMPR0 -= 0x4000;
1105
1106         if (timings.interlaced)
1107                 reg->CR42 = 0x20;
1108         else
1109                 reg->CR42 = 0x00;
1110
1111         reg->CR34 = 0x10; /* display fifo */
1112
1113         i = ((((timings.HTotal >> 3) - 5) & 0x100) >> 8) |
1114                 ((((timings.HDisplay >> 3) - 1) & 0x100) >> 7) |
1115                 ((((timings.HSyncStart >> 3) - 1) & 0x100) >> 6) |
1116                 ((timings.HSyncStart & 0x800) >> 7);
1117
1118         if ((timings.HSyncEnd >> 3) - (timings.HSyncStart >> 3) > 64)
1119                 i |= 0x08;
1120         if ((timings.HSyncEnd >> 3) - (timings.HSyncStart >> 3) > 32)
1121                 i |= 0x20;
1122
1123         j = (reg->CRTC[0] + ((i & 0x01) << 8) +
1124              reg->CRTC[4] + ((i & 0x10) << 4) + 1) / 2;
1125
1126         if (j - (reg->CRTC[4] + ((i & 0x10) << 4)) < 4) {
1127                 if (reg->CRTC[4] + ((i & 0x10) << 4) + 4 <=
1128                     reg->CRTC[0] + ((i & 0x01) << 8))
1129                         j = reg->CRTC[4] + ((i & 0x10) << 4) + 4;
1130                 else
1131                         j = reg->CRTC[0] + ((i & 0x01) << 8) + 1;
1132         }
1133
1134         reg->CR3B = j & 0xff;
1135         i |= (j & 0x100) >> 2;
1136         reg->CR3C = (reg->CRTC[0] + ((i & 0x01) << 8)) / 2;
1137         reg->CR5D = i;
1138         reg->CR5E = (((timings.VTotal - 2) & 0x400) >> 10) |
1139                 (((timings.VDisplay - 1) & 0x400) >> 9) |
1140                 (((timings.VSyncStart) & 0x400) >> 8) |
1141                 (((timings.VSyncStart) & 0x400) >> 6) | 0x40;
1142         width = (var->xres_virtual * ((var->bits_per_pixel+7) / 8)) >> 3;
1143         reg->CR91 = reg->CRTC[19] = 0xff & width;
1144         reg->CR51 = (0x300 & width) >> 4;
1145         reg->CR90 = 0x80 | (width >> 8);
1146         reg->MiscOutReg |= 0x0c;
1147
1148         /* Set frame buffer description. */
1149
1150         if (var->bits_per_pixel <= 8)
1151                 reg->CR50 = 0;
1152         else if (var->bits_per_pixel <= 16)
1153                 reg->CR50 = 0x10;
1154         else
1155                 reg->CR50 = 0x30;
1156
1157         if (var->xres_virtual <= 640)
1158                 reg->CR50 |= 0x40;
1159         else if (var->xres_virtual == 800)
1160                 reg->CR50 |= 0x80;
1161         else if (var->xres_virtual == 1024)
1162                 reg->CR50 |= 0x00;
1163         else if (var->xres_virtual == 1152)
1164                 reg->CR50 |= 0x01;
1165         else if (var->xres_virtual == 1280)
1166                 reg->CR50 |= 0xc0;
1167         else if (var->xres_virtual == 1600)
1168                 reg->CR50 |= 0x81;
1169         else
1170                 reg->CR50 |= 0xc1;      /* Use GBD */
1171
1172         if (par->chip == S3_SAVAGE2000)
1173                 reg->CR33 = 0x08;
1174         else
1175                 reg->CR33 = 0x20;
1176
1177         reg->CRTC[0x17] = 0xeb;
1178
1179         reg->CR67 |= 1;
1180
1181         vga_out8(0x3d4, 0x36, par);
1182         reg->CR36 = vga_in8(0x3d5, par);
1183         vga_out8(0x3d4, 0x68, par);
1184         reg->CR68 = vga_in8(0x3d5, par);
1185         reg->CR69 = 0;
1186         vga_out8(0x3d4, 0x6f, par);
1187         reg->CR6F = vga_in8(0x3d5, par);
1188         vga_out8(0x3d4, 0x86, par);
1189         reg->CR86 = vga_in8(0x3d5, par);
1190         vga_out8(0x3d4, 0x88, par);
1191         reg->CR88 = vga_in8(0x3d5, par) | 0x08;
1192         vga_out8(0x3d4, 0xb0, par);
1193         reg->CRB0 = vga_in8(0x3d5, par) | 0x80;
1194
1195         return 0;
1196 }
1197
1198 /* --------------------------------------------------------------------- */
1199
1200 /*
1201  *    Set a single color register. Return != 0 for invalid regno.
1202  */
1203 static int savagefb_setcolreg(unsigned        regno,
1204                               unsigned        red,
1205                               unsigned        green,
1206                               unsigned        blue,
1207                               unsigned        transp,
1208                               struct fb_info *info)
1209 {
1210         struct savagefb_par *par = info->par;
1211
1212         if (regno >= NR_PALETTE)
1213                 return -EINVAL;
1214
1215         par->palette[regno].red    = red;
1216         par->palette[regno].green  = green;
1217         par->palette[regno].blue   = blue;
1218         par->palette[regno].transp = transp;
1219
1220         switch (info->var.bits_per_pixel) {
1221         case 8:
1222                 vga_out8(0x3c8, regno, par);
1223
1224                 vga_out8(0x3c9, red   >> 10, par);
1225                 vga_out8(0x3c9, green >> 10, par);
1226                 vga_out8(0x3c9, blue  >> 10, par);
1227                 break;
1228
1229         case 16:
1230                 if (regno < 16)
1231                         ((u32 *)info->pseudo_palette)[regno] =
1232                                 ((red   & 0xf800)      ) |
1233                                 ((green & 0xfc00) >>  5) |
1234                                 ((blue  & 0xf800) >> 11);
1235                 break;
1236
1237         case 24:
1238                 if (regno < 16)
1239                         ((u32 *)info->pseudo_palette)[regno] =
1240                                 ((red    & 0xff00) <<  8) |
1241                                 ((green  & 0xff00)      ) |
1242                                 ((blue   & 0xff00) >>  8);
1243                 break;
1244         case 32:
1245                 if (regno < 16)
1246                         ((u32 *)info->pseudo_palette)[regno] =
1247                                 ((transp & 0xff00) << 16) |
1248                                 ((red    & 0xff00) <<  8) |
1249                                 ((green  & 0xff00)      ) |
1250                                 ((blue   & 0xff00) >>  8);
1251                 break;
1252
1253         default:
1254                 return 1;
1255         }
1256
1257         return 0;
1258 }
1259
1260 static void savagefb_set_par_int(struct savagefb_par  *par, struct savage_reg *reg)
1261 {
1262         unsigned char tmp, cr3a, cr66, cr67;
1263
1264         DBG("savagefb_set_par_int");
1265
1266         par->SavageWaitIdle(par);
1267
1268         vga_out8(0x3c2, 0x23, par);
1269
1270         vga_out16(0x3d4, 0x4838, par);
1271         vga_out16(0x3d4, 0xa539, par);
1272         vga_out16(0x3c4, 0x0608, par);
1273
1274         vgaHWProtect(par, 1);
1275
1276         /*
1277          * Some Savage/MX and /IX systems go nuts when trying to exit the
1278          * server after WindowMaker has displayed a gradient background.  I
1279          * haven't been able to find what causes it, but a non-destructive
1280          * switch to mode 3 here seems to eliminate the issue.
1281          */
1282
1283         VerticalRetraceWait(par);
1284         vga_out8(0x3d4, 0x67, par);
1285         cr67 = vga_in8(0x3d5, par);
1286         vga_out8(0x3d5, cr67/*par->CR67*/ & ~0x0c, par); /* no STREAMS yet */
1287
1288         vga_out8(0x3d4, 0x23, par);
1289         vga_out8(0x3d5, 0x00, par);
1290         vga_out8(0x3d4, 0x26, par);
1291         vga_out8(0x3d5, 0x00, par);
1292
1293         /* restore extended regs */
1294         vga_out8(0x3d4, 0x66, par);
1295         vga_out8(0x3d5, reg->CR66, par);
1296         vga_out8(0x3d4, 0x3a, par);
1297         vga_out8(0x3d5, reg->CR3A, par);
1298         vga_out8(0x3d4, 0x31, par);
1299         vga_out8(0x3d5, reg->CR31, par);
1300         vga_out8(0x3d4, 0x32, par);
1301         vga_out8(0x3d5, reg->CR32, par);
1302         vga_out8(0x3d4, 0x58, par);
1303         vga_out8(0x3d5, reg->CR58, par);
1304         vga_out8(0x3d4, 0x53, par);
1305         vga_out8(0x3d5, reg->CR53 & 0x7f, par);
1306
1307         vga_out16(0x3c4, 0x0608, par);
1308
1309         /* Restore DCLK registers. */
1310
1311         vga_out8(0x3c4, 0x0e, par);
1312         vga_out8(0x3c5, reg->SR0E, par);
1313         vga_out8(0x3c4, 0x0f, par);
1314         vga_out8(0x3c5, reg->SR0F, par);
1315         vga_out8(0x3c4, 0x29, par);
1316         vga_out8(0x3c5, reg->SR29, par);
1317         vga_out8(0x3c4, 0x15, par);
1318         vga_out8(0x3c5, reg->SR15, par);
1319
1320         /* Restore flat panel expansion regsters. */
1321         if (par->chip == S3_SAVAGE_MX) {
1322                 int i;
1323
1324                 for (i = 0; i < 8; i++) {
1325                         vga_out8(0x3c4, 0x54+i, par);
1326                         vga_out8(0x3c5, reg->SR54[i], par);
1327                 }
1328         }
1329
1330         vgaHWRestore (par, reg);
1331
1332         /* extended mode timing registers */
1333         vga_out8(0x3d4, 0x53, par);
1334         vga_out8(0x3d5, reg->CR53, par);
1335         vga_out8(0x3d4, 0x5d, par);
1336         vga_out8(0x3d5, reg->CR5D, par);
1337         vga_out8(0x3d4, 0x5e, par);
1338         vga_out8(0x3d5, reg->CR5E, par);
1339         vga_out8(0x3d4, 0x3b, par);
1340         vga_out8(0x3d5, reg->CR3B, par);
1341         vga_out8(0x3d4, 0x3c, par);
1342         vga_out8(0x3d5, reg->CR3C, par);
1343         vga_out8(0x3d4, 0x43, par);
1344         vga_out8(0x3d5, reg->CR43, par);
1345         vga_out8(0x3d4, 0x65, par);
1346         vga_out8(0x3d5, reg->CR65, par);
1347
1348         /* restore the desired video mode with cr67 */
1349         vga_out8(0x3d4, 0x67, par);
1350         /* following part not present in X11 driver */
1351         cr67 = vga_in8(0x3d5, par) & 0xf;
1352         vga_out8(0x3d5, 0x50 | cr67, par);
1353         udelay(10000);
1354         vga_out8(0x3d4, 0x67, par);
1355         /* end of part */
1356         vga_out8(0x3d5, reg->CR67 & ~0x0c, par);
1357
1358         /* other mode timing and extended regs */
1359         vga_out8(0x3d4, 0x34, par);
1360         vga_out8(0x3d5, reg->CR34, par);
1361         vga_out8(0x3d4, 0x40, par);
1362         vga_out8(0x3d5, reg->CR40, par);
1363         vga_out8(0x3d4, 0x42, par);
1364         vga_out8(0x3d5, reg->CR42, par);
1365         vga_out8(0x3d4, 0x45, par);
1366         vga_out8(0x3d5, reg->CR45, par);
1367         vga_out8(0x3d4, 0x50, par);
1368         vga_out8(0x3d5, reg->CR50, par);
1369         vga_out8(0x3d4, 0x51, par);
1370         vga_out8(0x3d5, reg->CR51, par);
1371
1372         /* memory timings */
1373         vga_out8(0x3d4, 0x36, par);
1374         vga_out8(0x3d5, reg->CR36, par);
1375         vga_out8(0x3d4, 0x60, par);
1376         vga_out8(0x3d5, reg->CR60, par);
1377         vga_out8(0x3d4, 0x68, par);
1378         vga_out8(0x3d5, reg->CR68, par);
1379         vga_out8(0x3d4, 0x69, par);
1380         vga_out8(0x3d5, reg->CR69, par);
1381         vga_out8(0x3d4, 0x6f, par);
1382         vga_out8(0x3d5, reg->CR6F, par);
1383
1384         vga_out8(0x3d4, 0x33, par);
1385         vga_out8(0x3d5, reg->CR33, par);
1386         vga_out8(0x3d4, 0x86, par);
1387         vga_out8(0x3d5, reg->CR86, par);
1388         vga_out8(0x3d4, 0x88, par);
1389         vga_out8(0x3d5, reg->CR88, par);
1390         vga_out8(0x3d4, 0x90, par);
1391         vga_out8(0x3d5, reg->CR90, par);
1392         vga_out8(0x3d4, 0x91, par);
1393         vga_out8(0x3d5, reg->CR91, par);
1394
1395         if (par->chip == S3_SAVAGE4) {
1396                 vga_out8(0x3d4, 0xb0, par);
1397                 vga_out8(0x3d5, reg->CRB0, par);
1398         }
1399
1400         vga_out8(0x3d4, 0x32, par);
1401         vga_out8(0x3d5, reg->CR32, par);
1402
1403         /* unlock extended seq regs */
1404         vga_out8(0x3c4, 0x08, par);
1405         vga_out8(0x3c5, 0x06, par);
1406
1407         /* Restore extended sequencer regs for MCLK. SR10 == 255 indicates
1408          * that we should leave the default SR10 and SR11 values there.
1409          */
1410         if (reg->SR10 != 255) {
1411                 vga_out8(0x3c4, 0x10, par);
1412                 vga_out8(0x3c5, reg->SR10, par);
1413                 vga_out8(0x3c4, 0x11, par);
1414                 vga_out8(0x3c5, reg->SR11, par);
1415         }
1416
1417         /* restore extended seq regs for dclk */
1418         vga_out8(0x3c4, 0x0e, par);
1419         vga_out8(0x3c5, reg->SR0E, par);
1420         vga_out8(0x3c4, 0x0f, par);
1421         vga_out8(0x3c5, reg->SR0F, par);
1422         vga_out8(0x3c4, 0x12, par);
1423         vga_out8(0x3c5, reg->SR12, par);
1424         vga_out8(0x3c4, 0x13, par);
1425         vga_out8(0x3c5, reg->SR13, par);
1426         vga_out8(0x3c4, 0x29, par);
1427         vga_out8(0x3c5, reg->SR29, par);
1428         vga_out8(0x3c4, 0x18, par);
1429         vga_out8(0x3c5, reg->SR18, par);
1430
1431         /* load new m, n pll values for dclk & mclk */
1432         vga_out8(0x3c4, 0x15, par);
1433         tmp = vga_in8(0x3c5, par) & ~0x21;
1434
1435         vga_out8(0x3c5, tmp | 0x03, par);
1436         vga_out8(0x3c5, tmp | 0x23, par);
1437         vga_out8(0x3c5, tmp | 0x03, par);
1438         vga_out8(0x3c5, reg->SR15, par);
1439         udelay(100);
1440
1441         vga_out8(0x3c4, 0x30, par);
1442         vga_out8(0x3c5, reg->SR30, par);
1443         vga_out8(0x3c4, 0x08, par);
1444         vga_out8(0x3c5, reg->SR08, par);
1445
1446         /* now write out cr67 in full, possibly starting STREAMS */
1447         VerticalRetraceWait(par);
1448         vga_out8(0x3d4, 0x67, par);
1449         vga_out8(0x3d5, reg->CR67, par);
1450
1451         vga_out8(0x3d4, 0x66, par);
1452         cr66 = vga_in8(0x3d5, par);
1453         vga_out8(0x3d5, cr66 | 0x80, par);
1454         vga_out8(0x3d4, 0x3a, par);
1455         cr3a = vga_in8(0x3d5, par);
1456         vga_out8(0x3d5, cr3a | 0x80, par);
1457
1458         if (par->chip != S3_SAVAGE_MX) {
1459                 VerticalRetraceWait(par);
1460                 savage_out32(FIFO_CONTROL_REG, reg->MMPR0, par);
1461                 par->SavageWaitIdle(par);
1462                 savage_out32(MIU_CONTROL_REG, reg->MMPR1, par);
1463                 par->SavageWaitIdle(par);
1464                 savage_out32(STREAMS_TIMEOUT_REG, reg->MMPR2, par);
1465                 par->SavageWaitIdle(par);
1466                 savage_out32(MISC_TIMEOUT_REG, reg->MMPR3, par);
1467         }
1468
1469         vga_out8(0x3d4, 0x66, par);
1470         vga_out8(0x3d5, cr66, par);
1471         vga_out8(0x3d4, 0x3a, par);
1472         vga_out8(0x3d5, cr3a, par);
1473
1474         SavageSetup2DEngine(par);
1475         vgaHWProtect(par, 0);
1476 }
1477
1478 static void savagefb_update_start(struct savagefb_par      *par,
1479                                   struct fb_var_screeninfo *var)
1480 {
1481         int base;
1482
1483         base = ((var->yoffset * var->xres_virtual + (var->xoffset & ~1))
1484                 * ((var->bits_per_pixel+7) / 8)) >> 2;
1485
1486         /* now program the start address registers */
1487         vga_out16(0x3d4, (base & 0x00ff00) | 0x0c, par);
1488         vga_out16(0x3d4, ((base & 0x00ff) << 8) | 0x0d, par);
1489         vga_out8(0x3d4, 0x69, par);
1490         vga_out8(0x3d5, (base & 0x7f0000) >> 16, par);
1491 }
1492
1493
1494 static void savagefb_set_fix(struct fb_info *info)
1495 {
1496         info->fix.line_length = info->var.xres_virtual *
1497                 info->var.bits_per_pixel / 8;
1498
1499         if (info->var.bits_per_pixel == 8) {
1500                 info->fix.visual      = FB_VISUAL_PSEUDOCOLOR;
1501                 info->fix.xpanstep    = 4;
1502         } else {
1503                 info->fix.visual      = FB_VISUAL_TRUECOLOR;
1504                 info->fix.xpanstep    = 2;
1505         }
1506
1507 }
1508
1509 static int savagefb_set_par(struct fb_info *info)
1510 {
1511         struct savagefb_par *par = info->par;
1512         struct fb_var_screeninfo *var = &info->var;
1513         int err;
1514
1515         DBG("savagefb_set_par");
1516         err = savagefb_decode_var(var, par, &par->state);
1517         if (err)
1518                 return err;
1519
1520         if (par->dacSpeedBpp <= 0) {
1521                 if (var->bits_per_pixel > 24)
1522                         par->dacSpeedBpp = par->clock[3];
1523                 else if (var->bits_per_pixel >= 24)
1524                         par->dacSpeedBpp = par->clock[2];
1525                 else if ((var->bits_per_pixel > 8) && (var->bits_per_pixel < 24))
1526                         par->dacSpeedBpp = par->clock[1];
1527                 else if (var->bits_per_pixel <= 8)
1528                         par->dacSpeedBpp = par->clock[0];
1529         }
1530
1531         /* Set ramdac limits */
1532         par->maxClock = par->dacSpeedBpp;
1533         par->minClock = 10000;
1534
1535         savagefb_set_par_int(par, &par->state);
1536         fb_set_cmap(&info->cmap, info);
1537         savagefb_set_fix(info);
1538         savagefb_set_clip(info);
1539
1540         SavagePrintRegs(par);
1541         return 0;
1542 }
1543
1544 /*
1545  *    Pan or Wrap the Display
1546  */
1547 static int savagefb_pan_display(struct fb_var_screeninfo *var,
1548                                 struct fb_info           *info)
1549 {
1550         struct savagefb_par *par = info->par;
1551
1552         savagefb_update_start(par, var);
1553         return 0;
1554 }
1555
1556 static int savagefb_blank(int blank, struct fb_info *info)
1557 {
1558         struct savagefb_par *par = info->par;
1559         u8 sr8 = 0, srd = 0;
1560
1561         if (par->display_type == DISP_CRT) {
1562                 vga_out8(0x3c4, 0x08, par);
1563                 sr8 = vga_in8(0x3c5, par);
1564                 sr8 |= 0x06;
1565                 vga_out8(0x3c5, sr8, par);
1566                 vga_out8(0x3c4, 0x0d, par);
1567                 srd = vga_in8(0x3c5, par);
1568                 srd &= 0x50;
1569
1570                 switch (blank) {
1571                 case FB_BLANK_UNBLANK:
1572                 case FB_BLANK_NORMAL:
1573                         break;
1574                 case FB_BLANK_VSYNC_SUSPEND:
1575                         srd |= 0x10;
1576                         break;
1577                 case FB_BLANK_HSYNC_SUSPEND:
1578                         srd |= 0x40;
1579                         break;
1580                 case FB_BLANK_POWERDOWN:
1581                         srd |= 0x50;
1582                         break;
1583                 }
1584
1585                 vga_out8(0x3c4, 0x0d, par);
1586                 vga_out8(0x3c5, srd, par);
1587         }
1588
1589         if (par->display_type == DISP_LCD ||
1590             par->display_type == DISP_DFP) {
1591                 switch(blank) {
1592                 case FB_BLANK_UNBLANK:
1593                 case FB_BLANK_NORMAL:
1594                         vga_out8(0x3c4, 0x31, par); /* SR31 bit 4 - FP enable */
1595                         vga_out8(0x3c5, vga_in8(0x3c5, par) | 0x10, par);
1596                         break;
1597                 case FB_BLANK_VSYNC_SUSPEND:
1598                 case FB_BLANK_HSYNC_SUSPEND:
1599                 case FB_BLANK_POWERDOWN:
1600                         vga_out8(0x3c4, 0x31, par); /* SR31 bit 4 - FP enable */
1601                         vga_out8(0x3c5, vga_in8(0x3c5, par) & ~0x10, par);
1602                         break;
1603                 }
1604         }
1605
1606         return (blank == FB_BLANK_NORMAL) ? 1 : 0;
1607 }
1608
1609 static int savagefb_open(struct fb_info *info, int user)
1610 {
1611         struct savagefb_par *par = info->par;
1612
1613         mutex_lock(&par->open_lock);
1614
1615         if (!par->open_count) {
1616                 memset(&par->vgastate, 0, sizeof(par->vgastate));
1617                 par->vgastate.flags = VGA_SAVE_CMAP | VGA_SAVE_FONTS |
1618                         VGA_SAVE_MODE;
1619                 par->vgastate.vgabase = par->mmio.vbase + 0x8000;
1620                 save_vga(&par->vgastate);
1621                 savage_get_default_par(par, &par->initial);
1622         }
1623
1624         par->open_count++;
1625         mutex_unlock(&par->open_lock);
1626         return 0;
1627 }
1628
1629 static int savagefb_release(struct fb_info *info, int user)
1630 {
1631         struct savagefb_par *par = info->par;
1632
1633         mutex_lock(&par->open_lock);
1634
1635         if (par->open_count == 1) {
1636                 savage_set_default_par(par, &par->initial);
1637                 restore_vga(&par->vgastate);
1638         }
1639
1640         par->open_count--;
1641         mutex_unlock(&par->open_lock);
1642         return 0;
1643 }
1644
1645 static struct fb_ops savagefb_ops = {
1646         .owner          = THIS_MODULE,
1647         .fb_open        = savagefb_open,
1648         .fb_release     = savagefb_release,
1649         .fb_check_var   = savagefb_check_var,
1650         .fb_set_par     = savagefb_set_par,
1651         .fb_setcolreg   = savagefb_setcolreg,
1652         .fb_pan_display = savagefb_pan_display,
1653         .fb_blank       = savagefb_blank,
1654 #if defined(CONFIG_FB_SAVAGE_ACCEL)
1655         .fb_fillrect    = savagefb_fillrect,
1656         .fb_copyarea    = savagefb_copyarea,
1657         .fb_imageblit   = savagefb_imageblit,
1658         .fb_sync        = savagefb_sync,
1659 #else
1660         .fb_fillrect    = cfb_fillrect,
1661         .fb_copyarea    = cfb_copyarea,
1662         .fb_imageblit   = cfb_imageblit,
1663 #endif
1664 };
1665
1666 /* --------------------------------------------------------------------- */
1667
1668 static struct fb_var_screeninfo __devinitdata savagefb_var800x600x8 = {
1669         .accel_flags =  FB_ACCELF_TEXT,
1670         .xres =         800,
1671         .yres =         600,
1672         .xres_virtual =  800,
1673         .yres_virtual =  600,
1674         .bits_per_pixel = 8,
1675         .pixclock =     25000,
1676         .left_margin =  88,
1677         .right_margin = 40,
1678         .upper_margin = 23,
1679         .lower_margin = 1,
1680         .hsync_len =    128,
1681         .vsync_len =    4,
1682         .sync =         FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
1683         .vmode =        FB_VMODE_NONINTERLACED
1684 };
1685
1686 static void savage_enable_mmio(struct savagefb_par *par)
1687 {
1688         unsigned char val;
1689
1690         DBG("savage_enable_mmio\n");
1691
1692         val = vga_in8(0x3c3, par);
1693         vga_out8(0x3c3, val | 0x01, par);
1694         val = vga_in8(0x3cc, par);
1695         vga_out8(0x3c2, val | 0x01, par);
1696
1697         if (par->chip >= S3_SAVAGE4) {
1698                 vga_out8(0x3d4, 0x40, par);
1699                 val = vga_in8(0x3d5, par);
1700                 vga_out8(0x3d5, val | 1, par);
1701         }
1702 }
1703
1704
1705 static void savage_disable_mmio(struct savagefb_par *par)
1706 {
1707         unsigned char val;
1708
1709         DBG("savage_disable_mmio\n");
1710
1711         if (par->chip >= S3_SAVAGE4) {
1712                 vga_out8(0x3d4, 0x40, par);
1713                 val = vga_in8(0x3d5, par);
1714                 vga_out8(0x3d5, val | 1, par);
1715         }
1716 }
1717
1718
1719 static int __devinit savage_map_mmio(struct fb_info *info)
1720 {
1721         struct savagefb_par *par = info->par;
1722         DBG("savage_map_mmio");
1723
1724         if (S3_SAVAGE3D_SERIES(par->chip))
1725                 par->mmio.pbase = pci_resource_start(par->pcidev, 0) +
1726                         SAVAGE_NEWMMIO_REGBASE_S3;
1727         else
1728                 par->mmio.pbase = pci_resource_start(par->pcidev, 0) +
1729                         SAVAGE_NEWMMIO_REGBASE_S4;
1730
1731         par->mmio.len = SAVAGE_NEWMMIO_REGSIZE;
1732
1733         par->mmio.vbase = ioremap(par->mmio.pbase, par->mmio.len);
1734         if (!par->mmio.vbase) {
1735                 printk("savagefb: unable to map memory mapped IO\n");
1736                 return -ENOMEM;
1737         } else
1738                 printk(KERN_INFO "savagefb: mapped io at %p\n",
1739                         par->mmio.vbase);
1740
1741         info->fix.mmio_start = par->mmio.pbase;
1742         info->fix.mmio_len   = par->mmio.len;
1743
1744         par->bci_base = (u32 __iomem *)(par->mmio.vbase + BCI_BUFFER_OFFSET);
1745         par->bci_ptr  = 0;
1746
1747         savage_enable_mmio(par);
1748
1749         return 0;
1750 }
1751
1752 static void savage_unmap_mmio(struct fb_info *info)
1753 {
1754         struct savagefb_par *par = info->par;
1755         DBG("savage_unmap_mmio");
1756
1757         savage_disable_mmio(par);
1758
1759         if (par->mmio.vbase) {
1760                 iounmap(par->mmio.vbase);
1761                 par->mmio.vbase = NULL;
1762         }
1763 }
1764
1765 static int __devinit savage_map_video(struct fb_info *info,
1766                                       int video_len)
1767 {
1768         struct savagefb_par *par = info->par;
1769         int resource;
1770
1771         DBG("savage_map_video");
1772
1773         if (S3_SAVAGE3D_SERIES(par->chip))
1774                 resource = 0;
1775         else
1776                 resource = 1;
1777
1778         par->video.pbase = pci_resource_start(par->pcidev, resource);
1779         par->video.len   = video_len;
1780         par->video.vbase = ioremap(par->video.pbase, par->video.len);
1781
1782         if (!par->video.vbase) {
1783                 printk("savagefb: unable to map screen memory\n");
1784                 return -ENOMEM;
1785         } else
1786                 printk(KERN_INFO "savagefb: mapped framebuffer at %p, "
1787                        "pbase == %x\n", par->video.vbase, par->video.pbase);
1788
1789         info->fix.smem_start = par->video.pbase;
1790         info->fix.smem_len   = par->video.len - par->cob_size;
1791         info->screen_base    = par->video.vbase;
1792
1793 #ifdef CONFIG_MTRR
1794         par->video.mtrr = mtrr_add(par->video.pbase, video_len,
1795                                    MTRR_TYPE_WRCOMB, 1);
1796 #endif
1797
1798         /* Clear framebuffer, it's all white in memory after boot */
1799         memset_io(par->video.vbase, 0, par->video.len);
1800
1801         return 0;
1802 }
1803
1804 static void savage_unmap_video(struct fb_info *info)
1805 {
1806         struct savagefb_par *par = info->par;
1807
1808         DBG("savage_unmap_video");
1809
1810         if (par->video.vbase) {
1811 #ifdef CONFIG_MTRR
1812                 mtrr_del(par->video.mtrr, par->video.pbase, par->video.len);
1813 #endif
1814
1815                 iounmap(par->video.vbase);
1816                 par->video.vbase = NULL;
1817                 info->screen_base = NULL;
1818         }
1819 }
1820
1821 static int savage_init_hw(struct savagefb_par *par)
1822 {
1823         unsigned char config1, m, n, n1, n2, sr8, cr3f, cr66 = 0, tmp;
1824
1825         static unsigned char RamSavage3D[] = { 8, 4, 4, 2 };
1826         static unsigned char RamSavage4[] =  { 2, 4, 8, 12, 16, 32, 64, 32 };
1827         static unsigned char RamSavageMX[] = { 2, 8, 4, 16, 8, 16, 4, 16 };
1828         static unsigned char RamSavageNB[] = { 0, 2, 4, 8, 16, 32, 2, 2 };
1829         int videoRam, videoRambytes, dvi;
1830
1831         DBG("savage_init_hw");
1832
1833         /* unprotect CRTC[0-7] */
1834         vga_out8(0x3d4, 0x11, par);
1835         tmp = vga_in8(0x3d5, par);
1836         vga_out8(0x3d5, tmp & 0x7f, par);
1837
1838         /* unlock extended regs */
1839         vga_out16(0x3d4, 0x4838, par);
1840         vga_out16(0x3d4, 0xa039, par);
1841         vga_out16(0x3c4, 0x0608, par);
1842
1843         vga_out8(0x3d4, 0x40, par);
1844         tmp = vga_in8(0x3d5, par);
1845         vga_out8(0x3d5, tmp & ~0x01, par);
1846
1847         /* unlock sys regs */
1848         vga_out8(0x3d4, 0x38, par);
1849         vga_out8(0x3d5, 0x48, par);
1850
1851         /* Unlock system registers. */
1852         vga_out16(0x3d4, 0x4838, par);
1853
1854         /* Next go on to detect amount of installed ram */
1855
1856         vga_out8(0x3d4, 0x36, par);            /* for register CR36 (CONFG_REG1), */
1857         config1 = vga_in8(0x3d5, par);    /* get amount of vram installed */
1858
1859         /* Compute the amount of video memory and offscreen memory. */
1860
1861         switch  (par->chip) {
1862         case S3_SAVAGE3D:
1863                 videoRam = RamSavage3D[(config1 & 0xC0) >> 6 ] * 1024;
1864                 break;
1865
1866         case S3_SAVAGE4:
1867                 /*
1868                  * The Savage4 has one ugly special case to consider.  On
1869                  * systems with 4 banks of 2Mx32 SDRAM, the BIOS says 4MB
1870                  * when it really means 8MB.  Why do it the same when you
1871                  * can do it different...
1872                  */
1873                 vga_out8(0x3d4, 0x68, par);     /* memory control 1 */
1874                 if ((vga_in8(0x3d5, par) & 0xC0) == (0x01 << 6))
1875                         RamSavage4[1] = 8;
1876
1877                 /*FALLTHROUGH*/
1878
1879         case S3_SAVAGE2000:
1880                 videoRam = RamSavage4[(config1 & 0xE0) >> 5] * 1024;
1881                 break;
1882
1883         case S3_SAVAGE_MX:
1884         case S3_SUPERSAVAGE:
1885                 videoRam = RamSavageMX[(config1 & 0x0E) >> 1] * 1024;
1886                 break;
1887
1888         case S3_PROSAVAGE:
1889                 videoRam = RamSavageNB[(config1 & 0xE0) >> 5] * 1024;
1890                 break;
1891
1892         default:
1893                 /* How did we get here? */
1894                 videoRam = 0;
1895                 break;
1896         }
1897
1898         videoRambytes = videoRam * 1024;
1899
1900         printk(KERN_INFO "savagefb: probed videoram:  %dk\n", videoRam);
1901
1902         /* reset graphics engine to avoid memory corruption */
1903         vga_out8(0x3d4, 0x66, par);
1904         cr66 = vga_in8(0x3d5, par);
1905         vga_out8(0x3d5, cr66 | 0x02, par);
1906         udelay(10000);
1907
1908         vga_out8(0x3d4, 0x66, par);
1909         vga_out8(0x3d5, cr66 & ~0x02, par);     /* clear reset flag */
1910         udelay(10000);
1911
1912
1913         /*
1914          * reset memory interface, 3D engine, AGP master, PCI master,
1915          * master engine unit, motion compensation/LPB
1916          */
1917         vga_out8(0x3d4, 0x3f, par);
1918         cr3f = vga_in8(0x3d5, par);
1919         vga_out8(0x3d5, cr3f | 0x08, par);
1920         udelay(10000);
1921
1922         vga_out8(0x3d4, 0x3f, par);
1923         vga_out8(0x3d5, cr3f & ~0x08, par);     /* clear reset flags */
1924         udelay(10000);
1925
1926         /* Savage ramdac speeds */
1927         par->numClocks = 4;
1928         par->clock[0] = 250000;
1929         par->clock[1] = 250000;
1930         par->clock[2] = 220000;
1931         par->clock[3] = 220000;
1932
1933         /* detect current mclk */
1934         vga_out8(0x3c4, 0x08, par);
1935         sr8 = vga_in8(0x3c5, par);
1936         vga_out8(0x3c5, 0x06, par);
1937         vga_out8(0x3c4, 0x10, par);
1938         n = vga_in8(0x3c5, par);
1939         vga_out8(0x3c4, 0x11, par);
1940         m = vga_in8(0x3c5, par);
1941         vga_out8(0x3c4, 0x08, par);
1942         vga_out8(0x3c5, sr8, par);
1943         m &= 0x7f;
1944         n1 = n & 0x1f;
1945         n2 = (n >> 5) & 0x03;
1946         par->MCLK = ((1431818 * (m+2)) / (n1+2) / (1 << n2) + 50) / 100;
1947         printk(KERN_INFO "savagefb: Detected current MCLK value of %d kHz\n",
1948                 par->MCLK);
1949
1950         /* check for DVI/flat panel */
1951         dvi = 0;
1952
1953         if (par->chip == S3_SAVAGE4) {
1954                 unsigned char sr30 = 0x00;
1955
1956                 vga_out8(0x3c4, 0x30, par);
1957                 /* clear bit 1 */
1958                 vga_out8(0x3c5, vga_in8(0x3c5, par) & ~0x02, par);
1959                 sr30 = vga_in8(0x3c5, par);
1960                 if (sr30 & 0x02 /*0x04 */) {
1961                         dvi = 1;
1962                         printk("savagefb: Digital Flat Panel Detected\n");
1963                 }
1964         }
1965
1966         if (S3_SAVAGE_MOBILE_SERIES(par->chip) && !par->crtonly)
1967                 par->display_type = DISP_LCD;
1968         else if (dvi || (par->chip == S3_SAVAGE4 && par->dvi))
1969                 par->display_type = DISP_DFP;
1970         else
1971                 par->display_type = DISP_CRT;
1972
1973         /* Check LCD panel parrmation */
1974
1975         if (par->display_type == DISP_LCD) {
1976                 unsigned char cr6b = VGArCR(0x6b, par);
1977
1978                 int panelX = (VGArSEQ(0x61, par) +
1979                               ((VGArSEQ(0x66, par) & 0x02) << 7) + 1) * 8;
1980                 int panelY = (VGArSEQ(0x69, par) +
1981                               ((VGArSEQ(0x6e, par) & 0x70) << 4) + 1);
1982
1983                 char * sTechnology = "Unknown";
1984
1985                 /* OK, I admit it.  I don't know how to limit the max dot clock
1986                  * for LCD panels of various sizes.  I thought I copied the
1987                  * formula from the BIOS, but many users have parrmed me of
1988                  * my folly.
1989                  *
1990                  * Instead, I'll abandon any attempt to automatically limit the
1991                  * clock, and add an LCDClock option to XF86Config.  Some day,
1992                  * I should come back to this.
1993                  */
1994
1995                 enum ACTIVE_DISPLAYS { /* These are the bits in CR6B */
1996                         ActiveCRT = 0x01,
1997                         ActiveLCD = 0x02,
1998                         ActiveTV = 0x04,
1999                         ActiveCRT2 = 0x20,
2000                         ActiveDUO = 0x80
2001                 };
2002
2003                 if ((VGArSEQ(0x39, par) & 0x03) == 0) {
2004                         sTechnology = "TFT";
2005                 } else if ((VGArSEQ(0x30, par) & 0x01) == 0) {
2006                         sTechnology = "DSTN";
2007                 } else  {
2008                         sTechnology = "STN";
2009                 }
2010
2011                 printk(KERN_INFO "savagefb: %dx%d %s LCD panel detected %s\n",
2012                        panelX, panelY, sTechnology,
2013                        cr6b & ActiveLCD ? "and active" : "but not active");
2014
2015                 if (cr6b & ActiveLCD)   {
2016                         /*
2017                          * If the LCD is active and panel expansion is enabled,
2018                          * we probably want to kill the HW cursor.
2019                          */
2020
2021                         printk(KERN_INFO "savagefb: Limiting video mode to "
2022                                 "%dx%d\n", panelX, panelY);
2023
2024                         par->SavagePanelWidth = panelX;
2025                         par->SavagePanelHeight = panelY;
2026
2027                 } else
2028                         par->display_type = DISP_CRT;
2029         }
2030
2031         savage_get_default_par(par, &par->state);
2032         par->save = par->state;
2033
2034         if (S3_SAVAGE4_SERIES(par->chip)) {
2035                 /*
2036                  * The Savage4 and ProSavage have COB coherency bugs which
2037                  * render the buffer useless.  We disable it.
2038                  */
2039                 par->cob_index = 2;
2040                 par->cob_size = 0x8000 << par->cob_index;
2041                 par->cob_offset = videoRambytes;
2042         } else {
2043                 /* We use 128kB for the COB on all chips. */
2044
2045                 par->cob_index  = 7;
2046                 par->cob_size   = 0x400 << par->cob_index;
2047                 par->cob_offset = videoRambytes - par->cob_size;
2048         }
2049
2050         return videoRambytes;
2051 }
2052
2053 static int __devinit savage_init_fb_info(struct fb_info *info,
2054                                          struct pci_dev *dev,
2055                                          const struct pci_device_id *id)
2056 {
2057         struct savagefb_par *par = info->par;
2058         int err = 0;
2059
2060         par->pcidev  = dev;
2061
2062         info->fix.type     = FB_TYPE_PACKED_PIXELS;
2063         info->fix.type_aux         = 0;
2064         info->fix.ypanstep         = 1;
2065         info->fix.ywrapstep   = 0;
2066         info->fix.accel       = id->driver_data;
2067
2068         switch (info->fix.accel) {
2069         case FB_ACCEL_SUPERSAVAGE:
2070                 par->chip = S3_SUPERSAVAGE;
2071                 snprintf(info->fix.id, 16, "SuperSavage");
2072                 break;
2073         case FB_ACCEL_SAVAGE4:
2074                 par->chip = S3_SAVAGE4;
2075                 snprintf(info->fix.id, 16, "Savage4");
2076                 break;
2077         case FB_ACCEL_SAVAGE3D:
2078                 par->chip = S3_SAVAGE3D;
2079                 snprintf(info->fix.id, 16, "Savage3D");
2080                 break;
2081         case FB_ACCEL_SAVAGE3D_MV:
2082                 par->chip = S3_SAVAGE3D;
2083                 snprintf(info->fix.id, 16, "Savage3D-MV");
2084                 break;
2085         case FB_ACCEL_SAVAGE2000:
2086                 par->chip = S3_SAVAGE2000;
2087                 snprintf(info->fix.id, 16, "Savage2000");
2088                 break;
2089         case FB_ACCEL_SAVAGE_MX_MV:
2090                 par->chip = S3_SAVAGE_MX;
2091                 snprintf(info->fix.id, 16, "Savage/MX-MV");
2092                 break;
2093         case FB_ACCEL_SAVAGE_MX:
2094                 par->chip = S3_SAVAGE_MX;
2095                 snprintf(info->fix.id, 16, "Savage/MX");
2096                 break;
2097         case FB_ACCEL_SAVAGE_IX_MV:
2098                 par->chip = S3_SAVAGE_MX;
2099                 snprintf(info->fix.id, 16, "Savage/IX-MV");
2100                 break;
2101         case FB_ACCEL_SAVAGE_IX:
2102                 par->chip = S3_SAVAGE_MX;
2103                 snprintf(info->fix.id, 16, "Savage/IX");
2104                 break;
2105         case FB_ACCEL_PROSAVAGE_PM:
2106                 par->chip = S3_PROSAVAGE;
2107                 snprintf(info->fix.id, 16, "ProSavagePM");
2108                 break;
2109         case FB_ACCEL_PROSAVAGE_KM:
2110                 par->chip = S3_PROSAVAGE;
2111                 snprintf(info->fix.id, 16, "ProSavageKM");
2112                 break;
2113         case FB_ACCEL_S3TWISTER_P:
2114                 par->chip = S3_PROSAVAGE;
2115                 snprintf(info->fix.id, 16, "TwisterP");
2116                 break;
2117         case FB_ACCEL_S3TWISTER_K:
2118                 par->chip = S3_PROSAVAGE;
2119                 snprintf(info->fix.id, 16, "TwisterK");
2120                 break;
2121         case FB_ACCEL_PROSAVAGE_DDR:
2122                 par->chip = S3_PROSAVAGE;
2123                 snprintf(info->fix.id, 16, "ProSavageDDR");
2124                 break;
2125         case FB_ACCEL_PROSAVAGE_DDRK:
2126                 par->chip = S3_PROSAVAGE;
2127                 snprintf(info->fix.id, 16, "ProSavage8");
2128                 break;
2129         }
2130
2131         if (S3_SAVAGE3D_SERIES(par->chip)) {
2132                 par->SavageWaitIdle = savage3D_waitidle;
2133                 par->SavageWaitFifo = savage3D_waitfifo;
2134         } else if (S3_SAVAGE4_SERIES(par->chip) ||
2135                    S3_SUPERSAVAGE == par->chip) {
2136                 par->SavageWaitIdle = savage4_waitidle;
2137                 par->SavageWaitFifo = savage4_waitfifo;
2138         } else {
2139                 par->SavageWaitIdle = savage2000_waitidle;
2140                 par->SavageWaitFifo = savage2000_waitfifo;
2141         }
2142
2143         info->var.nonstd      = 0;
2144         info->var.activate    = FB_ACTIVATE_NOW;
2145         info->var.width       = -1;
2146         info->var.height      = -1;
2147         info->var.accel_flags = 0;
2148
2149         info->fbops          = &savagefb_ops;
2150         info->flags          = FBINFO_DEFAULT |
2151                                FBINFO_HWACCEL_YPAN |
2152                                FBINFO_HWACCEL_XPAN;
2153
2154         info->pseudo_palette = par->pseudo_palette;
2155
2156 #if defined(CONFIG_FB_SAVAGE_ACCEL)
2157         /* FIFO size + padding for commands */
2158         info->pixmap.addr = kcalloc(8, 1024, GFP_KERNEL);
2159
2160         err = -ENOMEM;
2161         if (info->pixmap.addr) {
2162                 info->pixmap.size = 8*1024;
2163                 info->pixmap.scan_align = 4;
2164                 info->pixmap.buf_align = 4;
2165                 info->pixmap.access_align = 32;
2166
2167                 err = fb_alloc_cmap(&info->cmap, NR_PALETTE, 0);
2168                 if (!err)
2169                 info->flags |= FBINFO_HWACCEL_COPYAREA |
2170                                FBINFO_HWACCEL_FILLRECT |
2171                                FBINFO_HWACCEL_IMAGEBLIT;
2172         }
2173 #endif
2174         return err;
2175 }
2176
2177 /* --------------------------------------------------------------------- */
2178
2179 static int __devinit savagefb_probe(struct pci_dev* dev,
2180                                     const struct pci_device_id* id)
2181 {
2182         struct fb_info *info;
2183         struct savagefb_par *par;
2184         u_int h_sync, v_sync;
2185         int err, lpitch;
2186         int video_len;
2187
2188         DBG("savagefb_probe");
2189
2190         info = framebuffer_alloc(sizeof(struct savagefb_par), &dev->dev);
2191         if (!info)
2192                 return -ENOMEM;
2193         par = info->par;
2194         mutex_init(&par->open_lock);
2195         err = pci_enable_device(dev);
2196         if (err)
2197                 goto failed_enable;
2198
2199         if ((err = pci_request_regions(dev, "savagefb"))) {
2200                 printk(KERN_ERR "cannot request PCI regions\n");
2201                 goto failed_enable;
2202         }
2203
2204         err = -ENOMEM;
2205
2206         if ((err = savage_init_fb_info(info, dev, id)))
2207                 goto failed_init;
2208
2209         err = savage_map_mmio(info);
2210         if (err)
2211                 goto failed_mmio;
2212
2213         video_len = savage_init_hw(par);
2214         /* FIXME: can't be negative */
2215         if (video_len < 0) {
2216                 err = video_len;
2217                 goto failed_mmio;
2218         }
2219
2220         err = savage_map_video(info, video_len);
2221         if (err)
2222                 goto failed_video;
2223
2224         INIT_LIST_HEAD(&info->modelist);
2225 #if defined(CONFIG_FB_SAVAGE_I2C)
2226         savagefb_create_i2c_busses(info);
2227         savagefb_probe_i2c_connector(info, &par->edid);
2228         fb_edid_to_monspecs(par->edid, &info->monspecs);
2229         kfree(par->edid);
2230         fb_videomode_to_modelist(info->monspecs.modedb,
2231                                  info->monspecs.modedb_len,
2232                                  &info->modelist);
2233 #endif
2234         info->var = savagefb_var800x600x8;
2235
2236         if (mode_option) {
2237                 fb_find_mode(&info->var, info, mode_option,
2238                              info->monspecs.modedb, info->monspecs.modedb_len,
2239                              NULL, 8);
2240         } else if (info->monspecs.modedb != NULL) {
2241                 const struct fb_videomode *mode;
2242
2243                 mode = fb_find_best_display(&info->monspecs, &info->modelist);
2244                 savage_update_var(&info->var, mode);
2245         }
2246
2247         /* maximize virtual vertical length */
2248         lpitch = info->var.xres_virtual*((info->var.bits_per_pixel + 7) >> 3);
2249         info->var.yres_virtual = info->fix.smem_len/lpitch;
2250
2251         if (info->var.yres_virtual < info->var.yres)
2252                 goto failed;
2253
2254 #if defined(CONFIG_FB_SAVAGE_ACCEL)
2255         /*
2256          * The clipping coordinates are masked with 0xFFF, so limit our
2257          * virtual resolutions to these sizes.
2258          */
2259         if (info->var.yres_virtual > 0x1000)
2260                 info->var.yres_virtual = 0x1000;
2261
2262         if (info->var.xres_virtual > 0x1000)
2263                 info->var.xres_virtual = 0x1000;
2264 #endif
2265         savagefb_check_var(&info->var, info);
2266         savagefb_set_fix(info);
2267
2268         /*
2269          * Calculate the hsync and vsync frequencies.  Note that
2270          * we split the 1e12 constant up so that we can preserve
2271          * the precision and fit the results into 32-bit registers.
2272          *  (1953125000 * 512 = 1e12)
2273          */
2274         h_sync = 1953125000 / info->var.pixclock;
2275         h_sync = h_sync * 512 / (info->var.xres + info->var.left_margin +
2276                                  info->var.right_margin +
2277                                  info->var.hsync_len);
2278         v_sync = h_sync / (info->var.yres + info->var.upper_margin +
2279                            info->var.lower_margin + info->var.vsync_len);
2280
2281         printk(KERN_INFO "savagefb v" SAVAGEFB_VERSION ": "
2282                "%dkB VRAM, using %dx%d, %d.%03dkHz, %dHz\n",
2283                info->fix.smem_len >> 10,
2284                info->var.xres, info->var.yres,
2285                h_sync / 1000, h_sync % 1000, v_sync);
2286
2287
2288         fb_destroy_modedb(info->monspecs.modedb);
2289         info->monspecs.modedb = NULL;
2290
2291         err = register_framebuffer(info);
2292         if (err < 0)
2293                 goto failed;
2294
2295         printk(KERN_INFO "fb: S3 %s frame buffer device\n",
2296                info->fix.id);
2297
2298         /*
2299          * Our driver data
2300          */
2301         pci_set_drvdata(dev, info);
2302
2303         return 0;
2304
2305  failed:
2306 #ifdef CONFIG_FB_SAVAGE_I2C
2307         savagefb_delete_i2c_busses(info);
2308 #endif
2309         fb_alloc_cmap(&info->cmap, 0, 0);
2310         savage_unmap_video(info);
2311  failed_video:
2312         savage_unmap_mmio(info);
2313  failed_mmio:
2314         kfree(info->pixmap.addr);
2315  failed_init:
2316         pci_release_regions(dev);
2317  failed_enable:
2318         framebuffer_release(info);
2319
2320         return err;
2321 }
2322
2323 static void __devexit savagefb_remove(struct pci_dev *dev)
2324 {
2325         struct fb_info *info = pci_get_drvdata(dev);
2326
2327         DBG("savagefb_remove");
2328
2329         if (info) {
2330                 /*
2331                  * If unregister_framebuffer fails, then
2332                  * we will be leaving hooks that could cause
2333                  * oopsen laying around.
2334                  */
2335                 if (unregister_framebuffer(info))
2336                         printk(KERN_WARNING "savagefb: danger danger! "
2337                                "Oopsen imminent!\n");
2338
2339 #ifdef CONFIG_FB_SAVAGE_I2C
2340                 savagefb_delete_i2c_busses(info);
2341 #endif
2342                 fb_alloc_cmap(&info->cmap, 0, 0);
2343                 savage_unmap_video(info);
2344                 savage_unmap_mmio(info);
2345                 kfree(info->pixmap.addr);
2346                 pci_release_regions(dev);
2347                 framebuffer_release(info);
2348
2349                 /*
2350                  * Ensure that the driver data is no longer
2351                  * valid.
2352                  */
2353                 pci_set_drvdata(dev, NULL);
2354         }
2355 }
2356
2357 static int savagefb_suspend(struct pci_dev *dev, pm_message_t mesg)
2358 {
2359         struct fb_info *info = pci_get_drvdata(dev);
2360         struct savagefb_par *par = info->par;
2361
2362         DBG("savagefb_suspend");
2363
2364         if (mesg.event == PM_EVENT_PRETHAW)
2365                 mesg.event = PM_EVENT_FREEZE;
2366         par->pm_state = mesg.event;
2367         dev->dev.power.power_state = mesg;
2368
2369         /*
2370          * For PM_EVENT_FREEZE, do not power down so the console
2371          * can remain active.
2372          */
2373         if (mesg.event == PM_EVENT_FREEZE)
2374                 return 0;
2375
2376         console_lock();
2377         fb_set_suspend(info, 1);
2378
2379         if (info->fbops->fb_sync)
2380                 info->fbops->fb_sync(info);
2381
2382         savagefb_blank(FB_BLANK_POWERDOWN, info);
2383         savage_set_default_par(par, &par->save);
2384         savage_disable_mmio(par);
2385         pci_save_state(dev);
2386         pci_disable_device(dev);
2387         pci_set_power_state(dev, pci_choose_state(dev, mesg));
2388         console_unlock();
2389
2390         return 0;
2391 }
2392
2393 static int savagefb_resume(struct pci_dev* dev)
2394 {
2395         struct fb_info *info = pci_get_drvdata(dev);
2396         struct savagefb_par *par = info->par;
2397         int cur_state = par->pm_state;
2398
2399         DBG("savage_resume");
2400
2401         par->pm_state = PM_EVENT_ON;
2402
2403         /*
2404          * The adapter was not powered down coming back from a
2405          * PM_EVENT_FREEZE.
2406          */
2407         if (cur_state == PM_EVENT_FREEZE) {
2408                 pci_set_power_state(dev, PCI_D0);
2409                 return 0;
2410         }
2411
2412         console_lock();
2413
2414         pci_set_power_state(dev, PCI_D0);
2415         pci_restore_state(dev);
2416
2417         if (pci_enable_device(dev))
2418                 DBG("err");
2419
2420         pci_set_master(dev);
2421         savage_enable_mmio(par);
2422         savage_init_hw(par);
2423         savagefb_set_par(info);
2424         fb_set_suspend(info, 0);
2425         savagefb_blank(FB_BLANK_UNBLANK, info);
2426         console_unlock();
2427
2428         return 0;
2429 }
2430
2431
2432 static struct pci_device_id savagefb_devices[] __devinitdata = {
2433         {PCI_VENDOR_ID_S3, PCI_CHIP_SUPSAV_MX128,
2434          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SUPERSAVAGE},
2435
2436         {PCI_VENDOR_ID_S3, PCI_CHIP_SUPSAV_MX64,
2437          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SUPERSAVAGE},
2438
2439         {PCI_VENDOR_ID_S3, PCI_CHIP_SUPSAV_MX64C,
2440          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SUPERSAVAGE},
2441
2442         {PCI_VENDOR_ID_S3, PCI_CHIP_SUPSAV_IX128SDR,
2443          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SUPERSAVAGE},
2444
2445         {PCI_VENDOR_ID_S3, PCI_CHIP_SUPSAV_IX128DDR,
2446          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SUPERSAVAGE},
2447
2448         {PCI_VENDOR_ID_S3, PCI_CHIP_SUPSAV_IX64SDR,
2449          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SUPERSAVAGE},
2450
2451         {PCI_VENDOR_ID_S3, PCI_CHIP_SUPSAV_IX64DDR,
2452          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SUPERSAVAGE},
2453
2454         {PCI_VENDOR_ID_S3, PCI_CHIP_SUPSAV_IXCSDR,
2455          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SUPERSAVAGE},
2456
2457         {PCI_VENDOR_ID_S3, PCI_CHIP_SUPSAV_IXCDDR,
2458          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SUPERSAVAGE},
2459
2460         {PCI_VENDOR_ID_S3, PCI_CHIP_SAVAGE4,
2461          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SAVAGE4},
2462
2463         {PCI_VENDOR_ID_S3, PCI_CHIP_SAVAGE3D,
2464          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SAVAGE3D},
2465
2466         {PCI_VENDOR_ID_S3, PCI_CHIP_SAVAGE3D_MV,
2467          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SAVAGE3D_MV},
2468
2469         {PCI_VENDOR_ID_S3, PCI_CHIP_SAVAGE2000,
2470          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SAVAGE2000},
2471
2472         {PCI_VENDOR_ID_S3, PCI_CHIP_SAVAGE_MX_MV,
2473          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SAVAGE_MX_MV},
2474
2475         {PCI_VENDOR_ID_S3, PCI_CHIP_SAVAGE_MX,
2476          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SAVAGE_MX},
2477
2478         {PCI_VENDOR_ID_S3, PCI_CHIP_SAVAGE_IX_MV,
2479          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SAVAGE_IX_MV},
2480
2481         {PCI_VENDOR_ID_S3, PCI_CHIP_SAVAGE_IX,
2482          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_SAVAGE_IX},
2483
2484         {PCI_VENDOR_ID_S3, PCI_CHIP_PROSAVAGE_PM,
2485          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_PROSAVAGE_PM},
2486
2487         {PCI_VENDOR_ID_S3, PCI_CHIP_PROSAVAGE_KM,
2488          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_PROSAVAGE_KM},
2489
2490         {PCI_VENDOR_ID_S3, PCI_CHIP_S3TWISTER_P,
2491          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_S3TWISTER_P},
2492
2493         {PCI_VENDOR_ID_S3, PCI_CHIP_S3TWISTER_K,
2494          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_S3TWISTER_K},
2495
2496         {PCI_VENDOR_ID_S3, PCI_CHIP_PROSAVAGE_DDR,
2497          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_PROSAVAGE_DDR},
2498
2499         {PCI_VENDOR_ID_S3, PCI_CHIP_PROSAVAGE_DDRK,
2500          PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_PROSAVAGE_DDRK},
2501
2502         {0, 0, 0, 0, 0, 0, 0}
2503 };
2504
2505 MODULE_DEVICE_TABLE(pci, savagefb_devices);
2506
2507 static struct pci_driver savagefb_driver = {
2508         .name =     "savagefb",
2509         .id_table = savagefb_devices,
2510         .probe =    savagefb_probe,
2511         .suspend =  savagefb_suspend,
2512         .resume =   savagefb_resume,
2513         .remove =   __devexit_p(savagefb_remove)
2514 };
2515
2516 /* **************************** exit-time only **************************** */
2517
2518 static void __exit savage_done(void)
2519 {
2520         DBG("savage_done");
2521         pci_unregister_driver(&savagefb_driver);
2522 }
2523
2524
2525 /* ************************* init in-kernel code ************************** */
2526
2527 static int __init savagefb_setup(char *options)
2528 {
2529 #ifndef MODULE
2530         char *this_opt;
2531
2532         if (!options || !*options)
2533                 return 0;
2534
2535         while ((this_opt = strsep(&options, ",")) != NULL) {
2536                 mode_option = this_opt;
2537         }
2538 #endif /* !MODULE */
2539         return 0;
2540 }
2541
2542 static int __init savagefb_init(void)
2543 {
2544         char *option;
2545
2546         DBG("savagefb_init");
2547
2548         if (fb_get_options("savagefb", &option))
2549                 return -ENODEV;
2550
2551         savagefb_setup(option);
2552         return pci_register_driver(&savagefb_driver);
2553
2554 }
2555
2556 module_init(savagefb_init);
2557 module_exit(savage_done);
2558
2559 module_param(mode_option, charp, 0);
2560 MODULE_PARM_DESC(mode_option, "Specify initial video mode");