release/src-rt-6.x/linux/linux-2.6/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
  45 #ifndef CONFIG_PCI              /* sanity check */
  46 #error This driver requires PCI support.
  47 #endif
  48
  49 #define PFX "rivafb: "
  50
  51 static inline unsigned char MISCin(struct riva_par *par)
  52 {
  53         return (VGA_RD08(par->riva.PVIO, 0x3cc));
  54 }
  55
  56 static Bool
  57 riva_is_connected(struct riva_par *par, Bool second)
  58 {
  59         volatile U032 __iomem *PRAMDAC = par->riva.PRAMDAC0;
  60         U032 reg52C, reg608;
  61         Bool present;
  62
  63         if(second) PRAMDAC += 0x800;
  64
  65         reg52C = NV_RD32(PRAMDAC, 0x052C);
  66         reg608 = NV_RD32(PRAMDAC, 0x0608);
  67
  68         NV_WR32(PRAMDAC, 0x0608, reg608 & ~0x00010000);
  69
  70         NV_WR32(PRAMDAC, 0x052C, reg52C & 0x0000FEEE);
  71         mdelay(1);
  72         NV_WR32(PRAMDAC, 0x052C, NV_RD32(PRAMDAC, 0x052C) | 1);
  73
  74         NV_WR32(par->riva.PRAMDAC0, 0x0610, 0x94050140);
  75         NV_WR32(par->riva.PRAMDAC0, 0x0608, 0x00001000);
  76
  77         mdelay(1);
  78
  79         present = (NV_RD32(PRAMDAC, 0x0608) & (1 << 28)) ? TRUE : FALSE;
  80
  81         NV_WR32(par->riva.PRAMDAC0, 0x0608,
  82                 NV_RD32(par->riva.PRAMDAC0, 0x0608) & 0x0000EFFF);
  83
  84         NV_WR32(PRAMDAC, 0x052C, reg52C);
  85         NV_WR32(PRAMDAC, 0x0608, reg608);
  86
  87         return present;
  88 }
  89
  90 static void
  91 riva_override_CRTC(struct riva_par *par)
  92 {
  93         printk(KERN_INFO PFX
  94                 "Detected CRTC controller %i being used\n",
  95                 par->SecondCRTC ? 1 : 0);
  96
  97         if(par->forceCRTC != -1) {
  98                 printk(KERN_INFO PFX
  99                         "Forcing usage of CRTC %i\n", par->forceCRTC);
 100                 par->SecondCRTC = par->forceCRTC;
 101         }
 102 }
 103
 104 static void
 105 riva_is_second(struct riva_par *par)
 106 {
 107         if (par->FlatPanel == 1) {
 108                 switch(par->Chipset & 0xffff) {
 109                 case 0x0174:
 110                 case 0x0175:
 111                 case 0x0176:
 112                 case 0x0177:
 113                 case 0x0179:
 114                 case 0x017C:
 115                 case 0x017D:
 116                 case 0x0186:
 117                 case 0x0187:
 118                 /* this might not be a good default for the chips below */
 119                 case 0x0286:
 120                 case 0x028C:
 121                 case 0x0316:
 122                 case 0x0317:
 123                 case 0x031A:
 124                 case 0x031B:
 125                 case 0x031C:
 126                 case 0x031D:
 127                 case 0x031E:
 128                 case 0x031F:
 129                 case 0x0324:
 130                 case 0x0325:
 131                 case 0x0328:
 132                 case 0x0329:
 133                 case 0x032C:
 134                 case 0x032D:
 135                         par->SecondCRTC = TRUE;
 136                         break;
 137                 default:
 138                         par->SecondCRTC = FALSE;
 139                         break;
 140                 }
 141         } else {
 142                 if(riva_is_connected(par, 0)) {
 143
 144                         if (NV_RD32(par->riva.PRAMDAC0, 0x0000052C) & 0x100)
 145                                 par->SecondCRTC = TRUE;
 146                         else
 147                                 par->SecondCRTC = FALSE;
 148                 } else
 149                 if (riva_is_connected(par, 1)) {
 150                         if(NV_RD32(par->riva.PRAMDAC0, 0x0000252C) & 0x100)
 151                                 par->SecondCRTC = TRUE;
 152                         else
 153                                 par->SecondCRTC = FALSE;
 154                 } else /* default */
 155                         par->SecondCRTC = FALSE;
 156         }
 157         riva_override_CRTC(par);
 158 }
 159
 160 unsigned long riva_get_memlen(struct riva_par *par)
 161 {
 162         RIVA_HW_INST *chip = &par->riva;
 163         unsigned long memlen = 0;
 164         unsigned int chipset = par->Chipset;
 165         struct pci_dev* dev;
 166         int amt;
 167
 168         switch (chip->Architecture) {
 169         case NV_ARCH_03:
 170                 if (NV_RD32(chip->PFB, 0x00000000) & 0x00000020) {
 171                         if (((NV_RD32(chip->PMC, 0x00000000) & 0xF0) == 0x20)
 172                             && ((NV_RD32(chip->PMC, 0x00000000)&0x0F)>=0x02)) {
 173                                 /*
 174                                  * SDRAM 128 ZX.
 175                                  */
 176                                 switch (NV_RD32(chip->PFB,0x00000000) & 0x03) {
 177                                 case 2:
 178                                         memlen = 1024 * 4;
 179                                         break;
 180                                 case 1:
 181                                         memlen = 1024 * 2;
 182                                         break;
 183                                 default:
 184                                         memlen = 1024 * 8;
 185                                         break;
 186                                 }
 187                         } else {
 188                                 memlen = 1024 * 8;
 189                         }
 190                 } else  {
 191                         /*
 192                          * SGRAM 128.
 193                          */
 194                         switch (NV_RD32(chip->PFB, 0x00000000) & 0x00000003) {
 195                         case 0:
 196                                 memlen = 1024 * 8;
 197                                 break;
 198                         case 2:
 199                                 memlen = 1024 * 4;
 200                                 break;
 201                         default:
 202                                 memlen = 1024 * 2;
 203                                 break;
 204                         }
 205                 }
 206                 break;
 207         case NV_ARCH_04:
 208                 if (NV_RD32(chip->PFB, 0x00000000) & 0x00000100) {
 209                         memlen = ((NV_RD32(chip->PFB, 0x00000000)>>12)&0x0F) *
 210                                 1024 * 2 + 1024 * 2;
 211                 } else {
 212                         switch (NV_RD32(chip->PFB, 0x00000000) & 0x00000003) {
 213                         case 0:
 214                                 memlen = 1024 * 32;
 215                                 break;
 216                         case 1:
 217                                 memlen = 1024 * 4;
 218                                 break;
 219                         case 2:
 220                                 memlen = 1024 * 8;
 221                                 break;
 222                         case 3:
 223                         default:
 224                                 memlen = 1024 * 16;
 225                                 break;
 226                         }
 227                 }
 228                 break;
 229         case NV_ARCH_10:
 230         case NV_ARCH_20:
 231         case NV_ARCH_30:
 232                 if(chipset == NV_CHIP_IGEFORCE2) {
 233
 234                         dev = pci_get_bus_and_slot(0, 1);
 235                         pci_read_config_dword(dev, 0x7C, &amt);
 236                         pci_dev_put(dev);
 237                         memlen = (((amt >> 6) & 31) + 1) * 1024;
 238                 } else if (chipset == NV_CHIP_0x01F0) {
 239                         dev = pci_get_bus_and_slot(0, 1);
 240                         pci_read_config_dword(dev, 0x84, &amt);
 241                         pci_dev_put(dev);
 242                         memlen = (((amt >> 4) & 127) + 1) * 1024;
 243                 } else {
 244                         switch ((NV_RD32(chip->PFB, 0x0000020C) >> 20) &
 245                                 0x000000FF){
 246                         case 0x02:
 247                                 memlen = 1024 * 2;
 248                                 break;
 249                         case 0x04:
 250                                 memlen = 1024 * 4;
 251                                 break;
 252                         case 0x08:
 253                                 memlen = 1024 * 8;
 254                                 break;
 255                         case 0x10:
 256                                 memlen = 1024 * 16;
 257                                 break;
 258                         case 0x20:
 259                                 memlen = 1024 * 32;
 260                                 break;
 261                         case 0x40:
 262                                 memlen = 1024 * 64;
 263                                 break;
 264                         case 0x80:
 265                                 memlen = 1024 * 128;
 266                                 break;
 267                         default:
 268                                 memlen = 1024 * 16;
 269                                 break;
 270                         }
 271                 }
 272                 break;
 273         }
 274         return memlen;
 275 }
 276
 277 unsigned long riva_get_maxdclk(struct riva_par *par)
 278 {
 279         RIVA_HW_INST *chip = &par->riva;
 280         unsigned long dclk = 0;
 281
 282         switch (chip->Architecture) {
 283         case NV_ARCH_03:
 284                 if (NV_RD32(chip->PFB, 0x00000000) & 0x00000020) {
 285                         if (((NV_RD32(chip->PMC, 0x00000000) & 0xF0) == 0x20)
 286                             && ((NV_RD32(chip->PMC,0x00000000)&0x0F) >= 0x02)) {
 287                                 /*
 288                                  * SDRAM 128 ZX.
 289                                  */
 290                                 dclk = 800000;
 291                         } else {
 292                                 dclk = 1000000;
 293                         }
 294                 } else {
 295                         /*
 296                          * SGRAM 128.
 297                          */
 298                         dclk = 1000000;
 299                 }
 300                 break;
 301         case NV_ARCH_04:
 302         case NV_ARCH_10:
 303         case NV_ARCH_20:
 304         case NV_ARCH_30:
 305                 switch ((NV_RD32(chip->PFB, 0x00000000) >> 3) & 0x00000003) {
 306                 case 3:
 307                         dclk = 800000;
 308                         break;
 309                 default:
 310                         dclk = 1000000;
 311                         break;
 312                 }
 313                 break;
 314         }
 315         return dclk;
 316 }
 317
 318 void
 319 riva_common_setup(struct riva_par *par)
 320 {
 321         par->riva.EnableIRQ = 0;
 322         par->riva.PRAMDAC0 =
 323                 (volatile U032 __iomem *)(par->ctrl_base + 0x00680000);
 324         par->riva.PFB =
 325                 (volatile U032 __iomem *)(par->ctrl_base + 0x00100000);
 326         par->riva.PFIFO =
 327                 (volatile U032 __iomem *)(par->ctrl_base + 0x00002000);
 328         par->riva.PGRAPH =
 329                 (volatile U032 __iomem *)(par->ctrl_base + 0x00400000);
 330         par->riva.PEXTDEV =
 331                 (volatile U032 __iomem *)(par->ctrl_base + 0x00101000);
 332         par->riva.PTIMER =
 333                 (volatile U032 __iomem *)(par->ctrl_base + 0x00009000);
 334         par->riva.PMC =
 335                 (volatile U032 __iomem *)(par->ctrl_base + 0x00000000);
 336         par->riva.FIFO =
 337                 (volatile U032 __iomem *)(par->ctrl_base + 0x00800000);
 338         par->riva.PCIO0 = par->ctrl_base + 0x00601000;
 339         par->riva.PDIO0 = par->ctrl_base + 0x00681000;
 340         par->riva.PVIO = par->ctrl_base + 0x000C0000;
 341
 342         par->riva.IO = (MISCin(par) & 0x01) ? 0x3D0 : 0x3B0;
 343
 344         if (par->FlatPanel == -1) {
 345                 switch (par->Chipset & 0xffff) {
 346                 case 0x0112:   /* known laptop chips */
 347                 case 0x0174:
 348                 case 0x0175:
 349                 case 0x0176:
 350                 case 0x0177:
 351                 case 0x0179:
 352                 case 0x017C:
 353                 case 0x017D:
 354                 case 0x0186:
 355                 case 0x0187:
 356                 case 0x0286:
 357                 case 0x028C:
 358                 case 0x0316:
 359                 case 0x0317:
 360                 case 0x031A:
 361                 case 0x031B:
 362                 case 0x031C:
 363                 case 0x031D:
 364                 case 0x031E:
 365                 case 0x031F:
 366                 case 0x0324:
 367                 case 0x0325:
 368                 case 0x0328:
 369                 case 0x0329:
 370                 case 0x032C:
 371                 case 0x032D:
 372                         printk(KERN_INFO PFX
 373                                 "On a laptop.  Assuming Digital Flat Panel\n");
 374                         par->FlatPanel = 1;
 375                         break;
 376                 default:
 377                         break;
 378                 }
 379         }
 380
 381         switch (par->Chipset & 0x0ff0) {
 382         case 0x0110:
 383                 if (par->Chipset == NV_CHIP_GEFORCE2_GO)
 384                         par->SecondCRTC = TRUE;
 385 #if defined(__powerpc__)
 386                 if (par->FlatPanel == 1)
 387                         par->SecondCRTC = TRUE;
 388 #endif
 389                 riva_override_CRTC(par);
 390                 break;
 391         case 0x0170:
 392         case 0x0180:
 393         case 0x01F0:
 394         case 0x0250:
 395         case 0x0280:
 396         case 0x0300:
 397         case 0x0310:
 398         case 0x0320:
 399         case 0x0330:
 400         case 0x0340:
 401                 riva_is_second(par);
 402                 break;
 403         default:
 404                 break;
 405         }
 406
 407         if (par->SecondCRTC) {
 408                 par->riva.PCIO = par->riva.PCIO0 + 0x2000;
 409                 par->riva.PCRTC = par->riva.PCRTC0 + 0x800;
 410                 par->riva.PRAMDAC = par->riva.PRAMDAC0 + 0x800;
 411                 par->riva.PDIO = par->riva.PDIO0 + 0x2000;
 412         } else {
 413                 par->riva.PCIO = par->riva.PCIO0;
 414                 par->riva.PCRTC = par->riva.PCRTC0;
 415                 par->riva.PRAMDAC = par->riva.PRAMDAC0;
 416                 par->riva.PDIO = par->riva.PDIO0;
 417         }
 418
 419         if (par->FlatPanel == -1) {
 420                 /* Fix me, need x86 DDC code */
 421                 par->FlatPanel = 0;
 422         }
 423         par->riva.flatPanel = (par->FlatPanel > 0) ? TRUE : FALSE;
 424
 425         RivaGetConfig(&par->riva, par->Chipset);
 426 }
 427