release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/video/riva/nv_driver.c

   1 /* $XConsortium: nv_driver.c /main/3 1996/10/28 05:13:37 kaleb $ */
   2 /*
   3  * Copyright 1996-1997  David J. McKay
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * DAVID J. MCKAY BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  19  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  20  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  */
  23
  24 /*
  25  * GPL licensing note -- nVidia is allowing a liberal interpretation of
  26  * the documentation restriction above, to merely say that this nVidia's
  27  * copyright and disclaimer should be included with all code derived
  28  * from this source.  -- Jeff Garzik <jgarzik@pobox.com>, 01/Nov/99
  29  */
  30
  31 /* Hacked together from mga driver and 3.3.4 NVIDIA driver by Jarno Paananen
  32    <jpaana@s2.org> */
  33
  34 /* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/nv/nv_setup.c,v 1.18 2002/08/0
  35 5 20:47:06 mvojkovi Exp $ */
  36
  37 #include <linux/delay.h>
  38 #include <linux/pci.h>
  39 #include <linux/pci_ids.h>
  40 #include "nv_type.h"
  41 #include "rivafb.h"
  42 #include "nvreg.h"
  43
  44 #define PFX "rivafb: "
  45
  46 static inline unsigned char MISCin(struct riva_par *par)
  47 {
  48         return (VGA_RD08(par->riva.PVIO, 0x3cc));
  49 }
  50
  51 static Bool
  52 riva_is_connected(struct riva_par *par, Bool second)
  53 {
  54         volatile U032 __iomem *PRAMDAC = par->riva.PRAMDAC0;
  55         U032 reg52C, reg608;
  56         Bool present;
  57
  58         if(second) PRAMDAC += 0x800;
  59
  60         reg52C = NV_RD32(PRAMDAC, 0x052C);
  61         reg608 = NV_RD32(PRAMDAC, 0x0608);
  62
  63         NV_WR32(PRAMDAC, 0x0608, reg608 & ~0x00010000);
  64
  65         NV_WR32(PRAMDAC, 0x052C, reg52C & 0x0000FEEE);
  66         mdelay(1);
  67         NV_WR32(PRAMDAC, 0x052C, NV_RD32(PRAMDAC, 0x052C) | 1);
  68
  69         NV_WR32(par->riva.PRAMDAC0, 0x0610, 0x94050140);
  70         NV_WR32(par->riva.PRAMDAC0, 0x0608, 0x00001000);
  71
  72         mdelay(1);
  73
  74         present = (NV_RD32(PRAMDAC, 0x0608) & (1 << 28)) ? TRUE : FALSE;
  75
  76         NV_WR32(par->riva.PRAMDAC0, 0x0608,
  77                 NV_RD32(par->riva.PRAMDAC0, 0x0608) & 0x0000EFFF);
  78
  79         NV_WR32(PRAMDAC, 0x052C, reg52C);
  80         NV_WR32(PRAMDAC, 0x0608, reg608);
  81
  82         return present;
  83 }
  84
  85 static void
  86 riva_override_CRTC(struct riva_par *par)
  87 {
  88         printk(KERN_INFO PFX
  89                 "Detected CRTC controller %i being used\n",
  90                 par->SecondCRTC ? 1 : 0);
  91
  92         if(par->forceCRTC != -1) {
  93                 printk(KERN_INFO PFX
  94                         "Forcing usage of CRTC %i\n", par->forceCRTC);
  95                 par->SecondCRTC = par->forceCRTC;
  96         }
  97 }
  98
  99 static void
 100 riva_is_second(struct riva_par *par)
 101 {
 102         if (par->FlatPanel == 1) {
 103                 switch(par->Chipset & 0xffff) {
 104                 case 0x0174:
 105                 case 0x0175:
 106                 case 0x0176:
 107                 case 0x0177:
 108                 case 0x0179:
 109                 case 0x017C:
 110                 case 0x017D:
 111                 case 0x0186:
 112                 case 0x0187:
 113                 /* this might not be a good default for the chips below */
 114                 case 0x0286:
 115                 case 0x028C:
 116                 case 0x0316:
 117                 case 0x0317:
 118                 case 0x031A:
 119                 case 0x031B:
 120                 case 0x031C:
 121                 case 0x031D:
 122                 case 0x031E:
 123                 case 0x031F:
 124                 case 0x0324:
 125                 case 0x0325:
 126                 case 0x0328:
 127                 case 0x0329:
 128                 case 0x032C:
 129                 case 0x032D:
 130                         par->SecondCRTC = TRUE;
 131                         break;
 132                 default:
 133                         par->SecondCRTC = FALSE;
 134                         break;
 135                 }
 136         } else {
 137                 if(riva_is_connected(par, 0)) {
 138
 139                         if (NV_RD32(par->riva.PRAMDAC0, 0x0000052C) & 0x100)
 140                                 par->SecondCRTC = TRUE;
 141                         else
 142                                 par->SecondCRTC = FALSE;
 143                 } else
 144                 if (riva_is_connected(par, 1)) {
 145                         if(NV_RD32(par->riva.PRAMDAC0, 0x0000252C) & 0x100)
 146                                 par->SecondCRTC = TRUE;
 147                         else
 148                                 par->SecondCRTC = FALSE;
 149                 } else /* default */
 150                         par->SecondCRTC = FALSE;
 151         }
 152         riva_override_CRTC(par);
 153 }
 154
 155 unsigned long riva_get_memlen(struct riva_par *par)
 156 {
 157         RIVA_HW_INST *chip = &par->riva;
 158         unsigned long memlen = 0;
 159         unsigned int chipset = par->Chipset;
 160         struct pci_dev* dev;
 161         u32 amt;
 162
 163         switch (chip->Architecture) {
 164         case NV_ARCH_03:
 165                 if (NV_RD32(chip->PFB, 0x00000000) & 0x00000020) {
 166                         if (((NV_RD32(chip->PMC, 0x00000000) & 0xF0) == 0x20)
 167                             && ((NV_RD32(chip->PMC, 0x00000000)&0x0F)>=0x02)) {
 168                                 /*
 169                                  * SDRAM 128 ZX.
 170                                  */
 171                                 switch (NV_RD32(chip->PFB,0x00000000) & 0x03) {
 172                                 case 2:
 173                                         memlen = 1024 * 4;
 174                                         break;
 175                                 case 1:
 176                                         memlen = 1024 * 2;
 177                                         break;
 178                                 default:
 179                                         memlen = 1024 * 8;
 180                                         break;
 181                                 }
 182                         } else {
 183                                 memlen = 1024 * 8;
 184                         }
 185                 } else  {
 186                         /*
 187                          * SGRAM 128.
 188                          */
 189                         switch (NV_RD32(chip->PFB, 0x00000000) & 0x00000003) {
 190                         case 0:
 191                                 memlen = 1024 * 8;
 192                                 break;
 193                         case 2:
 194                                 memlen = 1024 * 4;
 195                                 break;
 196                         default:
 197                                 memlen = 1024 * 2;
 198                                 break;
 199                         }
 200                 }
 201                 break;
 202         case NV_ARCH_04:
 203                 if (NV_RD32(chip->PFB, 0x00000000) & 0x00000100) {
 204                         memlen = ((NV_RD32(chip->PFB, 0x00000000)>>12)&0x0F) *
 205                                 1024 * 2 + 1024 * 2;
 206                 } else {
 207                         switch (NV_RD32(chip->PFB, 0x00000000) & 0x00000003) {
 208                         case 0:
 209                                 memlen = 1024 * 32;
 210                                 break;
 211                         case 1:
 212                                 memlen = 1024 * 4;
 213                                 break;
 214                         case 2:
 215                                 memlen = 1024 * 8;
 216                                 break;
 217                         case 3:
 218                         default:
 219                                 memlen = 1024 * 16;
 220                                 break;
 221                         }
 222                 }
 223                 break;
 224         case NV_ARCH_10:
 225         case NV_ARCH_20:
 226         case NV_ARCH_30:
 227                 if(chipset == NV_CHIP_IGEFORCE2) {
 228
 229                         dev = pci_get_bus_and_slot(0, 1);
 230                         pci_read_config_dword(dev, 0x7C, &amt);
 231                         pci_dev_put(dev);
 232                         memlen = (((amt >> 6) & 31) + 1) * 1024;
 233                 } else if (chipset == NV_CHIP_0x01F0) {
 234                         dev = pci_get_bus_and_slot(0, 1);
 235                         pci_read_config_dword(dev, 0x84, &amt);
 236                         pci_dev_put(dev);
 237                         memlen = (((amt >> 4) & 127) + 1) * 1024;
 238                 } else {
 239                         switch ((NV_RD32(chip->PFB, 0x0000020C) >> 20) &
 240                                 0x000000FF){
 241                         case 0x02:
 242                                 memlen = 1024 * 2;
 243                                 break;
 244                         case 0x04:
 245                                 memlen = 1024 * 4;
 246                                 break;
 247                         case 0x08:
 248                                 memlen = 1024 * 8;
 249                                 break;
 250                         case 0x10:
 251                                 memlen = 1024 * 16;
 252                                 break;
 253                         case 0x20:
 254                                 memlen = 1024 * 32;
 255                                 break;
 256                         case 0x40:
 257                                 memlen = 1024 * 64;
 258                                 break;
 259                         case 0x80:
 260                                 memlen = 1024 * 128;
 261                                 break;
 262                         default:
 263                                 memlen = 1024 * 16;
 264                                 break;
 265                         }
 266                 }
 267                 break;
 268         }
 269         return memlen;
 270 }
 271
 272 unsigned long riva_get_maxdclk(struct riva_par *par)
 273 {
 274         RIVA_HW_INST *chip = &par->riva;
 275         unsigned long dclk = 0;
 276
 277         switch (chip->Architecture) {
 278         case NV_ARCH_03:
 279                 if (NV_RD32(chip->PFB, 0x00000000) & 0x00000020) {
 280                         if (((NV_RD32(chip->PMC, 0x00000000) & 0xF0) == 0x20)
 281                             && ((NV_RD32(chip->PMC,0x00000000)&0x0F) >= 0x02)) {
 282                                 /*
 283                                  * SDRAM 128 ZX.
 284                                  */
 285                                 dclk = 800000;
 286                         } else {
 287                                 dclk = 1000000;
 288                         }
 289                 } else {
 290                         /*
 291                          * SGRAM 128.
 292                          */
 293                         dclk = 1000000;
 294                 }
 295                 break;
 296         case NV_ARCH_04:
 297         case NV_ARCH_10:
 298         case NV_ARCH_20:
 299         case NV_ARCH_30:
 300                 switch ((NV_RD32(chip->PFB, 0x00000000) >> 3) & 0x00000003) {
 301                 case 3:
 302                         dclk = 800000;
 303                         break;
 304                 default:
 305                         dclk = 1000000;
 306                         break;
 307                 }
 308                 break;
 309         }
 310         return dclk;
 311 }
 312
 313 void
 314 riva_common_setup(struct riva_par *par)
 315 {
 316         par->riva.EnableIRQ = 0;
 317         par->riva.PRAMDAC0 =
 318                 (volatile U032 __iomem *)(par->ctrl_base + 0x00680000);
 319         par->riva.PFB =
 320                 (volatile U032 __iomem *)(par->ctrl_base + 0x00100000);
 321         par->riva.PFIFO =
 322                 (volatile U032 __iomem *)(par->ctrl_base + 0x00002000);
 323         par->riva.PGRAPH =
 324                 (volatile U032 __iomem *)(par->ctrl_base + 0x00400000);
 325         par->riva.PEXTDEV =
 326                 (volatile U032 __iomem *)(par->ctrl_base + 0x00101000);
 327         par->riva.PTIMER =
 328                 (volatile U032 __iomem *)(par->ctrl_base + 0x00009000);
 329         par->riva.PMC =
 330                 (volatile U032 __iomem *)(par->ctrl_base + 0x00000000);
 331         par->riva.FIFO =
 332                 (volatile U032 __iomem *)(par->ctrl_base + 0x00800000);
 333         par->riva.PCIO0 = par->ctrl_base + 0x00601000;
 334         par->riva.PDIO0 = par->ctrl_base + 0x00681000;
 335         par->riva.PVIO = par->ctrl_base + 0x000C0000;
 336
 337         par->riva.IO = (MISCin(par) & 0x01) ? 0x3D0 : 0x3B0;
 338
 339         if (par->FlatPanel == -1) {
 340                 switch (par->Chipset & 0xffff) {
 341                 case 0x0112:   /* known laptop chips */
 342                 case 0x0174:
 343                 case 0x0175:
 344                 case 0x0176:
 345                 case 0x0177:
 346                 case 0x0179:
 347                 case 0x017C:
 348                 case 0x017D:
 349                 case 0x0186:
 350                 case 0x0187:
 351                 case 0x0286:
 352                 case 0x028C:
 353                 case 0x0316:
 354                 case 0x0317:
 355                 case 0x031A:
 356                 case 0x031B:
 357                 case 0x031C:
 358                 case 0x031D:
 359                 case 0x031E:
 360                 case 0x031F:
 361                 case 0x0324:
 362                 case 0x0325:
 363                 case 0x0328:
 364                 case 0x0329:
 365                 case 0x032C:
 366                 case 0x032D:
 367                         printk(KERN_INFO PFX
 368                                 "On a laptop.  Assuming Digital Flat Panel\n");
 369                         par->FlatPanel = 1;
 370                         break;
 371                 default:
 372                         break;
 373                 }
 374         }
 375
 376         switch (par->Chipset & 0x0ff0) {
 377         case 0x0110:
 378                 if (par->Chipset == NV_CHIP_GEFORCE2_GO)
 379                         par->SecondCRTC = TRUE;
 380 #if defined(__powerpc__)
 381                 if (par->FlatPanel == 1)
 382                         par->SecondCRTC = TRUE;
 383 #endif
 384                 riva_override_CRTC(par);
 385                 break;
 386         case 0x0170:
 387         case 0x0180:
 388         case 0x01F0:
 389         case 0x0250:
 390         case 0x0280:
 391         case 0x0300:
 392         case 0x0310:
 393         case 0x0320:
 394         case 0x0330:
 395         case 0x0340:
 396                 riva_is_second(par);
 397                 break;
 398         default:
 399                 break;
 400         }
 401
 402         if (par->SecondCRTC) {
 403                 par->riva.PCIO = par->riva.PCIO0 + 0x2000;
 404                 par->riva.PCRTC = par->riva.PCRTC0 + 0x800;
 405                 par->riva.PRAMDAC = par->riva.PRAMDAC0 + 0x800;
 406                 par->riva.PDIO = par->riva.PDIO0 + 0x2000;
 407         } else {
 408                 par->riva.PCIO = par->riva.PCIO0;
 409                 par->riva.PCRTC = par->riva.PCRTC0;
 410                 par->riva.PRAMDAC = par->riva.PRAMDAC0;
 411                 par->riva.PDIO = par->riva.PDIO0;
 412         }
 413
 414         if (par->FlatPanel == -1) {
 415                 /* Fix me, need x86 DDC code */
 416                 par->FlatPanel = 0;
 417         }
 418         par->riva.flatPanel = (par->FlatPanel > 0) ? TRUE : FALSE;
 419
 420         RivaGetConfig(&par->riva, par->Chipset);
 421 }