linux/drivers/video/riva/fbdev.c
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   1/*
   2 * linux/drivers/video/riva/fbdev.c - nVidia RIVA 128/TNT/TNT2 fb driver
   3 *
   4 * Maintained by Ani Joshi <ajoshi@shell.unixbox.com>
   5 *
   6 * Copyright 1999-2000 Jeff Garzik
   7 *
   8 * Contributors:
   9 *
  10 *      Ani Joshi:  Lots of debugging and cleanup work, really helped
  11 *      get the driver going
  12 *
  13 *      Ferenc Bakonyi:  Bug fixes, cleanup, modularization
  14 *
  15 *      Jindrich Makovicka:  Accel code help, hw cursor, mtrr
  16 *
  17 *      Paul Richards:  Bug fixes, updates
  18 *
  19 * Initial template from skeletonfb.c, created 28 Dec 1997 by Geert Uytterhoeven
  20 * Includes riva_hw.c from nVidia, see copyright below.
  21 * KGI code provided the basis for state storage, init, and mode switching.
  22 *
  23 * This file is subject to the terms and conditions of the GNU General Public
  24 * License.  See the file COPYING in the main directory of this archive
  25 * for more details.
  26 *
  27 * Known bugs and issues:
  28 *      restoring text mode fails
  29 *      doublescan modes are broken
  30 */
  31
  32#include <linux/module.h>
  33#include <linux/kernel.h>
  34#include <linux/errno.h>
  35#include <linux/string.h>
  36#include <linux/mm.h>
  37#include <linux/slab.h>
  38#include <linux/delay.h>
  39#include <linux/fb.h>
  40#include <linux/init.h>
  41#include <linux/pci.h>
  42#include <linux/backlight.h>
  43#include <linux/bitrev.h>
  44#ifdef CONFIG_MTRR
  45#include <asm/mtrr.h>
  46#endif
  47#ifdef CONFIG_PPC_OF
  48#include <asm/prom.h>
  49#include <asm/pci-bridge.h>
  50#endif
  51#ifdef CONFIG_PMAC_BACKLIGHT
  52#include <asm/machdep.h>
  53#include <asm/backlight.h>
  54#endif
  55
  56#include "rivafb.h"
  57#include "nvreg.h"
  58
  59/* version number of this driver */
  60#define RIVAFB_VERSION "0.9.5b"
  61
  62/* ------------------------------------------------------------------------- *
  63 *
  64 * various helpful macros and constants
  65 *
  66 * ------------------------------------------------------------------------- */
  67#ifdef CONFIG_FB_RIVA_DEBUG
  68#define NVTRACE          printk
  69#else
  70#define NVTRACE          if(0) printk
  71#endif
  72
  73#define NVTRACE_ENTER(...)  NVTRACE("%s START\n", __func__)
  74#define NVTRACE_LEAVE(...)  NVTRACE("%s END\n", __func__)
  75
  76#ifdef CONFIG_FB_RIVA_DEBUG
  77#define assert(expr) \
  78        if(!(expr)) { \
  79        printk( "Assertion failed! %s,%s,%s,line=%d\n",\
  80        #expr,__FILE__,__func__,__LINE__); \
  81        BUG(); \
  82        }
  83#else
  84#define assert(expr)
  85#endif
  86
  87#define PFX "rivafb: "
  88
  89/* macro that allows you to set overflow bits */
  90#define SetBitField(value,from,to) SetBF(to,GetBF(value,from))
  91#define SetBit(n)               (1<<(n))
  92#define Set8Bits(value)         ((value)&0xff)
  93
  94/* HW cursor parameters */
  95#define MAX_CURS                32
  96
  97/* ------------------------------------------------------------------------- *
  98 *
  99 * prototypes
 100 *
 101 * ------------------------------------------------------------------------- */
 102
 103static int rivafb_blank(int blank, struct fb_info *info);
 104
 105/* ------------------------------------------------------------------------- *
 106 *
 107 * card identification
 108 *
 109 * ------------------------------------------------------------------------- */
 110
 111static struct pci_device_id rivafb_pci_tbl[] = {
 112        { PCI_VENDOR_ID_NVIDIA_SGS, PCI_DEVICE_ID_NVIDIA_SGS_RIVA128,
 113          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 114        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_TNT,
 115          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 116        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_TNT2,
 117          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 118        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_UTNT2,
 119          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 120        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_VTNT2,
 121          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 122        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_UVTNT2,
 123          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 124        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_ITNT2,
 125          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 126        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE_SDR,
 127          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 128        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE_DDR,
 129          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 130        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_QUADRO,
 131          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 132        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE2_MX,
 133          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 134        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE2_MX2,
 135          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 136        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE2_GO,
 137          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 138        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_QUADRO2_MXR,
 139          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 140        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE2_GTS,
 141          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 142        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE2_GTS2,
 143          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 144        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE2_ULTRA,
 145          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 146        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_QUADRO2_PRO,
 147          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 148        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE4_MX_460,
 149          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 150        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE4_MX_440,
 151          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 152        // NF2/IGP version, GeForce 4 MX, NV18
 153        { PCI_VENDOR_ID_NVIDIA, 0x01f0,
 154          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 155        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE4_MX_420,
 156          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 157        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE4_440_GO,
 158          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 159        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE4_420_GO,
 160          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 161        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE4_420_GO_M32,
 162          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 163        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_QUADRO4_500XGL,
 164          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 165        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE4_440_GO_M64,
 166          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 167        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_QUADRO4_200,
 168          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 169        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_QUADRO4_550XGL,
 170          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 171        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_QUADRO4_500_GOGL,
 172          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 173        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_IGEFORCE2,
 174          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 175        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE3,
 176          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 177        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE3_1,
 178          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 179        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE3_2,
 180          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 181        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_QUADRO_DDC,
 182          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 183        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE4_TI_4600,
 184          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 185        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE4_TI_4400,
 186          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 187        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE4_TI_4200,
 188          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 189        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_QUADRO4_900XGL,
 190          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 191        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_QUADRO4_750XGL,
 192          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 193        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_QUADRO4_700XGL,
 194          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 195        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE_FX_GO_5200,
 196          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 197        { 0, } /* terminate list */
 198};
 199MODULE_DEVICE_TABLE(pci, rivafb_pci_tbl);
 200
 201/* ------------------------------------------------------------------------- *
 202 *
 203 * global variables
 204 *
 205 * ------------------------------------------------------------------------- */
 206
 207/* command line data, set in rivafb_setup() */
 208static int flatpanel __devinitdata = -1; /* Autodetect later */
 209static int forceCRTC __devinitdata = -1;
 210static int noaccel   __devinitdata = 0;
 211#ifdef CONFIG_MTRR
 212static int nomtrr __devinitdata = 0;
 213#endif
 214#ifdef CONFIG_PMAC_BACKLIGHT
 215static int backlight __devinitdata = 1;
 216#else
 217static int backlight __devinitdata = 0;
 218#endif
 219
 220static char *mode_option __devinitdata = NULL;
 221static int  strictmode       = 0;
 222
 223static struct fb_fix_screeninfo __devinitdata rivafb_fix = {
 224        .type           = FB_TYPE_PACKED_PIXELS,
 225        .xpanstep       = 1,
 226        .ypanstep       = 1,
 227};
 228
 229static struct fb_var_screeninfo __devinitdata rivafb_default_var = {
 230        .xres           = 640,
 231        .yres           = 480,
 232        .xres_virtual   = 640,
 233        .yres_virtual   = 480,
 234        .bits_per_pixel = 8,
 235        .red            = {0, 8, 0},
 236        .green          = {0, 8, 0},
 237        .blue           = {0, 8, 0},
 238        .transp         = {0, 0, 0},
 239        .activate       = FB_ACTIVATE_NOW,
 240        .height         = -1,
 241        .width          = -1,
 242        .pixclock       = 39721,
 243        .left_margin    = 40,
 244        .right_margin   = 24,
 245        .upper_margin   = 32,
 246        .lower_margin   = 11,
 247        .hsync_len      = 96,
 248        .vsync_len      = 2,
 249        .vmode          = FB_VMODE_NONINTERLACED
 250};
 251
 252/* from GGI */
 253static const struct riva_regs reg_template = {
 254        {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,        /* ATTR */
 255         0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
 256         0x41, 0x01, 0x0F, 0x00, 0x00},
 257        {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,        /* CRT  */
 258         0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00,
 259         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE3,        /* 0x10 */
 260         0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 261         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,        /* 0x20 */
 262         0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 263         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,        /* 0x30 */
 264         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 265         0x00,                                                  /* 0x40 */
 266         },
 267        {0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F,        /* GRA  */
 268         0xFF},
 269        {0x03, 0x01, 0x0F, 0x00, 0x0E},                         /* SEQ  */
 270        0xEB                                                    /* MISC */
 271};
 272
 273/*
 274 * Backlight control
 275 */
 276#ifdef CONFIG_FB_RIVA_BACKLIGHT
 277/* We do not have any information about which values are allowed, thus
 278 * we used safe values.
 279 */
 280#define MIN_LEVEL 0x158
 281#define MAX_LEVEL 0x534
 282#define LEVEL_STEP ((MAX_LEVEL - MIN_LEVEL) / FB_BACKLIGHT_MAX)
 283
 284static int riva_bl_get_level_brightness(struct riva_par *par,
 285                int level)
 286{
 287        struct fb_info *info = pci_get_drvdata(par->pdev);
 288        int nlevel;
 289
 290        /* Get and convert the value */
 291        /* No locking on bl_curve since accessing a single value */
 292        nlevel = MIN_LEVEL + info->bl_curve[level] * LEVEL_STEP;
 293
 294        if (nlevel < 0)
 295                nlevel = 0;
 296        else if (nlevel < MIN_LEVEL)
 297                nlevel = MIN_LEVEL;
 298        else if (nlevel > MAX_LEVEL)
 299                nlevel = MAX_LEVEL;
 300
 301        return nlevel;
 302}
 303
 304static int riva_bl_update_status(struct backlight_device *bd)
 305{
 306        struct riva_par *par = bl_get_data(bd);
 307        U032 tmp_pcrt, tmp_pmc;
 308        int level;
 309
 310        if (bd->props.power != FB_BLANK_UNBLANK ||
 311            bd->props.fb_blank != FB_BLANK_UNBLANK)
 312                level = 0;
 313        else
 314                level = bd->props.brightness;
 315
 316        tmp_pmc = NV_RD32(par->riva.PMC, 0x10F0) & 0x0000FFFF;
 317        tmp_pcrt = NV_RD32(par->riva.PCRTC0, 0x081C) & 0xFFFFFFFC;
 318        if(level > 0) {
 319                tmp_pcrt |= 0x1;
 320                tmp_pmc |= (1 << 31); /* backlight bit */
 321                tmp_pmc |= riva_bl_get_level_brightness(par, level) << 16; /* level */
 322        }
 323        NV_WR32(par->riva.PCRTC0, 0x081C, tmp_pcrt);
 324        NV_WR32(par->riva.PMC, 0x10F0, tmp_pmc);
 325
 326        return 0;
 327}
 328
 329static int riva_bl_get_brightness(struct backlight_device *bd)
 330{
 331        return bd->props.brightness;
 332}
 333
 334static struct backlight_ops riva_bl_ops = {
 335        .get_brightness = riva_bl_get_brightness,
 336        .update_status  = riva_bl_update_status,
 337};
 338
 339static void riva_bl_init(struct riva_par *par)
 340{
 341        struct fb_info *info = pci_get_drvdata(par->pdev);
 342        struct backlight_device *bd;
 343        char name[12];
 344
 345        if (!par->FlatPanel)
 346                return;
 347
 348#ifdef CONFIG_PMAC_BACKLIGHT
 349        if (!machine_is(powermac) ||
 350            !pmac_has_backlight_type("mnca"))
 351                return;
 352#endif
 353
 354        snprintf(name, sizeof(name), "rivabl%d", info->node);
 355
 356        bd = backlight_device_register(name, info->dev, par, &riva_bl_ops);
 357        if (IS_ERR(bd)) {
 358                info->bl_dev = NULL;
 359                printk(KERN_WARNING "riva: Backlight registration failed\n");
 360                goto error;
 361        }
 362
 363        info->bl_dev = bd;
 364        fb_bl_default_curve(info, 0,
 365                MIN_LEVEL * FB_BACKLIGHT_MAX / MAX_LEVEL,
 366                FB_BACKLIGHT_MAX);
 367
 368        bd->props.max_brightness = FB_BACKLIGHT_LEVELS - 1;
 369        bd->props.brightness = bd->props.max_brightness;
 370        bd->props.power = FB_BLANK_UNBLANK;
 371        backlight_update_status(bd);
 372
 373        printk("riva: Backlight initialized (%s)\n", name);
 374
 375        return;
 376
 377error:
 378        return;
 379}
 380
 381static void riva_bl_exit(struct fb_info *info)
 382{
 383        struct backlight_device *bd = info->bl_dev;
 384
 385        backlight_device_unregister(bd);
 386        printk("riva: Backlight unloaded\n");
 387}
 388#else
 389static inline void riva_bl_init(struct riva_par *par) {}
 390static inline void riva_bl_exit(struct fb_info *info) {}
 391#endif /* CONFIG_FB_RIVA_BACKLIGHT */
 392
 393/* ------------------------------------------------------------------------- *
 394 *
 395 * MMIO access macros
 396 *
 397 * ------------------------------------------------------------------------- */
 398
 399static inline void CRTCout(struct riva_par *par, unsigned char index,
 400                           unsigned char val)
 401{
 402        VGA_WR08(par->riva.PCIO, 0x3d4, index);
 403        VGA_WR08(par->riva.PCIO, 0x3d5, val);
 404}
 405
 406static inline unsigned char CRTCin(struct riva_par *par,
 407                                   unsigned char index)
 408{
 409        VGA_WR08(par->riva.PCIO, 0x3d4, index);
 410        return (VGA_RD08(par->riva.PCIO, 0x3d5));
 411}
 412
 413static inline void GRAout(struct riva_par *par, unsigned char index,
 414                          unsigned char val)
 415{
 416        VGA_WR08(par->riva.PVIO, 0x3ce, index);
 417        VGA_WR08(par->riva.PVIO, 0x3cf, val);
 418}
 419
 420static inline unsigned char GRAin(struct riva_par *par,
 421                                  unsigned char index)
 422{
 423        VGA_WR08(par->riva.PVIO, 0x3ce, index);
 424        return (VGA_RD08(par->riva.PVIO, 0x3cf));
 425}
 426
 427static inline void SEQout(struct riva_par *par, unsigned char index,
 428                          unsigned char val)
 429{
 430        VGA_WR08(par->riva.PVIO, 0x3c4, index);
 431        VGA_WR08(par->riva.PVIO, 0x3c5, val);
 432}
 433
 434static inline unsigned char SEQin(struct riva_par *par,
 435                                  unsigned char index)
 436{
 437        VGA_WR08(par->riva.PVIO, 0x3c4, index);
 438        return (VGA_RD08(par->riva.PVIO, 0x3c5));
 439}
 440
 441static inline void ATTRout(struct riva_par *par, unsigned char index,
 442                           unsigned char val)
 443{
 444        VGA_WR08(par->riva.PCIO, 0x3c0, index);
 445        VGA_WR08(par->riva.PCIO, 0x3c0, val);
 446}
 447
 448static inline unsigned char ATTRin(struct riva_par *par,
 449                                   unsigned char index)
 450{
 451        VGA_WR08(par->riva.PCIO, 0x3c0, index);
 452        return (VGA_RD08(par->riva.PCIO, 0x3c1));
 453}
 454
 455static inline void MISCout(struct riva_par *par, unsigned char val)
 456{
 457        VGA_WR08(par->riva.PVIO, 0x3c2, val);
 458}
 459
 460static inline unsigned char MISCin(struct riva_par *par)
 461{
 462        return (VGA_RD08(par->riva.PVIO, 0x3cc));
 463}
 464
 465static inline void reverse_order(u32 *l)
 466{
 467        u8 *a = (u8 *)l;
 468        a[0] = bitrev8(a[0]);
 469        a[1] = bitrev8(a[1]);
 470        a[2] = bitrev8(a[2]);
 471        a[3] = bitrev8(a[3]);
 472}
 473
 474/* ------------------------------------------------------------------------- *
 475 *
 476 * cursor stuff
 477 *
 478 * ------------------------------------------------------------------------- */
 479
 480/**
 481 * rivafb_load_cursor_image - load cursor image to hardware
 482 * @data: address to monochrome bitmap (1 = foreground color, 0 = background)
 483 * @par:  pointer to private data
 484 * @w:    width of cursor image in pixels
 485 * @h:    height of cursor image in scanlines
 486 * @bg:   background color (ARGB1555) - alpha bit determines opacity
 487 * @fg:   foreground color (ARGB1555)
 488 *
 489 * DESCRIPTiON:
 490 * Loads cursor image based on a monochrome source and mask bitmap.  The
 491 * image bits determines the color of the pixel, 0 for background, 1 for
 492 * foreground.  Only the affected region (as determined by @w and @h 
 493 * parameters) will be updated.
 494 *
 495 * CALLED FROM:
 496 * rivafb_cursor()
 497 */
 498static void rivafb_load_cursor_image(struct riva_par *par, u8 *data8,
 499                                     u16 bg, u16 fg, u32 w, u32 h)
 500{
 501        int i, j, k = 0;
 502        u32 b, tmp;
 503        u32 *data = (u32 *)data8;
 504        bg = le16_to_cpu(bg);
 505        fg = le16_to_cpu(fg);
 506
 507        w = (w + 1) & ~1;
 508
 509        for (i = 0; i < h; i++) {
 510                b = *data++;
 511                reverse_order(&b);
 512                
 513                for (j = 0; j < w/2; j++) {
 514                        tmp = 0;
 515#if defined (__BIG_ENDIAN)
 516                        tmp = (b & (1 << 31)) ? fg << 16 : bg << 16;
 517                        b <<= 1;
 518                        tmp |= (b & (1 << 31)) ? fg : bg;
 519                        b <<= 1;
 520#else
 521                        tmp = (b & 1) ? fg : bg;
 522                        b >>= 1;
 523                        tmp |= (b & 1) ? fg << 16 : bg << 16;
 524                        b >>= 1;
 525#endif
 526                        writel(tmp, &par->riva.CURSOR[k++]);
 527                }
 528                k += (MAX_CURS - w)/2;
 529        }
 530}
 531
 532/* ------------------------------------------------------------------------- *
 533 *
 534 * general utility functions
 535 *
 536 * ------------------------------------------------------------------------- */
 537
 538/**
 539 * riva_wclut - set CLUT entry
 540 * @chip: pointer to RIVA_HW_INST object
 541 * @regnum: register number
 542 * @red: red component
 543 * @green: green component
 544 * @blue: blue component
 545 *
 546 * DESCRIPTION:
 547 * Sets color register @regnum.
 548 *
 549 * CALLED FROM:
 550 * rivafb_setcolreg()
 551 */
 552static void riva_wclut(RIVA_HW_INST *chip,
 553                       unsigned char regnum, unsigned char red,
 554                       unsigned char green, unsigned char blue)
 555{
 556        VGA_WR08(chip->PDIO, 0x3c8, regnum);
 557        VGA_WR08(chip->PDIO, 0x3c9, red);
 558        VGA_WR08(chip->PDIO, 0x3c9, green);
 559        VGA_WR08(chip->PDIO, 0x3c9, blue);
 560}
 561
 562/**
 563 * riva_rclut - read fromCLUT register
 564 * @chip: pointer to RIVA_HW_INST object
 565 * @regnum: register number
 566 * @red: red component
 567 * @green: green component
 568 * @blue: blue component
 569 *
 570 * DESCRIPTION:
 571 * Reads red, green, and blue from color register @regnum.
 572 *
 573 * CALLED FROM:
 574 * rivafb_setcolreg()
 575 */
 576static void riva_rclut(RIVA_HW_INST *chip,
 577                       unsigned char regnum, unsigned char *red,
 578                       unsigned char *green, unsigned char *blue)
 579{
 580        
 581        VGA_WR08(chip->PDIO, 0x3c7, regnum);
 582        *red = VGA_RD08(chip->PDIO, 0x3c9);
 583        *green = VGA_RD08(chip->PDIO, 0x3c9);
 584        *blue = VGA_RD08(chip->PDIO, 0x3c9);
 585}
 586
 587/**
 588 * riva_save_state - saves current chip state
 589 * @par: pointer to riva_par object containing info for current riva board
 590 * @regs: pointer to riva_regs object
 591 *
 592 * DESCRIPTION:
 593 * Saves current chip state to @regs.
 594 *
 595 * CALLED FROM:
 596 * rivafb_probe()
 597 */
 598/* from GGI */
 599static void riva_save_state(struct riva_par *par, struct riva_regs *regs)
 600{
 601        int i;
 602
 603        NVTRACE_ENTER();
 604        par->riva.LockUnlock(&par->riva, 0);
 605
 606        par->riva.UnloadStateExt(&par->riva, &regs->ext);
 607
 608        regs->misc_output = MISCin(par);
 609
 610        for (i = 0; i < NUM_CRT_REGS; i++)
 611                regs->crtc[i] = CRTCin(par, i);
 612
 613        for (i = 0; i < NUM_ATC_REGS; i++)
 614                regs->attr[i] = ATTRin(par, i);
 615
 616        for (i = 0; i < NUM_GRC_REGS; i++)
 617                regs->gra[i] = GRAin(par, i);
 618
 619        for (i = 0; i < NUM_SEQ_REGS; i++)
 620                regs->seq[i] = SEQin(par, i);
 621        NVTRACE_LEAVE();
 622}
 623
 624/**
 625 * riva_load_state - loads current chip state
 626 * @par: pointer to riva_par object containing info for current riva board
 627 * @regs: pointer to riva_regs object
 628 *
 629 * DESCRIPTION:
 630 * Loads chip state from @regs.
 631 *
 632 * CALLED FROM:
 633 * riva_load_video_mode()
 634 * rivafb_probe()
 635 * rivafb_remove()
 636 */
 637/* from GGI */
 638static void riva_load_state(struct riva_par *par, struct riva_regs *regs)
 639{
 640        RIVA_HW_STATE *state = &regs->ext;
 641        int i;
 642
 643        NVTRACE_ENTER();
 644        CRTCout(par, 0x11, 0x00);
 645
 646        par->riva.LockUnlock(&par->riva, 0);
 647
 648        par->riva.LoadStateExt(&par->riva, state);
 649
 650        MISCout(par, regs->misc_output);
 651
 652        for (i = 0; i < NUM_CRT_REGS; i++) {
 653                switch (i) {
 654                case 0x19:
 655                case 0x20 ... 0x40:
 656                        break;
 657                default:
 658                        CRTCout(par, i, regs->crtc[i]);
 659                }
 660        }
 661
 662        for (i = 0; i < NUM_ATC_REGS; i++)
 663                ATTRout(par, i, regs->attr[i]);
 664
 665        for (i = 0; i < NUM_GRC_REGS; i++)
 666                GRAout(par, i, regs->gra[i]);
 667
 668        for (i = 0; i < NUM_SEQ_REGS; i++)
 669                SEQout(par, i, regs->seq[i]);
 670        NVTRACE_LEAVE();
 671}
 672
 673/**
 674 * riva_load_video_mode - calculate timings
 675 * @info: pointer to fb_info object containing info for current riva board
 676 *
 677 * DESCRIPTION:
 678 * Calculate some timings and then send em off to riva_load_state().
 679 *
 680 * CALLED FROM:
 681 * rivafb_set_par()
 682 */
 683static int riva_load_video_mode(struct fb_info *info)
 684{
 685        int bpp, width, hDisplaySize, hDisplay, hStart,
 686            hEnd, hTotal, height, vDisplay, vStart, vEnd, vTotal, dotClock;
 687        int hBlankStart, hBlankEnd, vBlankStart, vBlankEnd;
 688        int rc;
 689        struct riva_par *par = info->par;
 690        struct riva_regs newmode;
 691        
 692        NVTRACE_ENTER();
 693        /* time to calculate */
 694        rivafb_blank(FB_BLANK_NORMAL, info);
 695
 696        bpp = info->var.bits_per_pixel;
 697        if (bpp == 16 && info->var.green.length == 5)
 698                bpp = 15;
 699        width = info->var.xres_virtual;
 700        hDisplaySize = info->var.xres;
 701        hDisplay = (hDisplaySize / 8) - 1;
 702        hStart = (hDisplaySize + info->var.right_margin) / 8 - 1;
 703        hEnd = (hDisplaySize + info->var.right_margin +
 704                info->var.hsync_len) / 8 - 1;
 705        hTotal = (hDisplaySize + info->var.right_margin +
 706                  info->var.hsync_len + info->var.left_margin) / 8 - 5;
 707        hBlankStart = hDisplay;
 708        hBlankEnd = hTotal + 4;
 709
 710        height = info->var.yres_virtual;
 711        vDisplay = info->var.yres - 1;
 712        vStart = info->var.yres + info->var.lower_margin - 1;
 713        vEnd = info->var.yres + info->var.lower_margin +
 714               info->var.vsync_len - 1;
 715        vTotal = info->var.yres + info->var.lower_margin +
 716                 info->var.vsync_len + info->var.upper_margin + 2;
 717        vBlankStart = vDisplay;
 718        vBlankEnd = vTotal + 1;
 719        dotClock = 1000000000 / info->var.pixclock;
 720
 721        memcpy(&newmode, &reg_template, sizeof(struct riva_regs));
 722
 723        if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED)
 724                vTotal |= 1;
 725
 726        if (par->FlatPanel) {
 727                vStart = vTotal - 3;
 728                vEnd = vTotal - 2;
 729                vBlankStart = vStart;
 730                hStart = hTotal - 3;
 731                hEnd = hTotal - 2;
 732                hBlankEnd = hTotal + 4;
 733        }
 734
 735        newmode.crtc[0x0] = Set8Bits (hTotal); 
 736        newmode.crtc[0x1] = Set8Bits (hDisplay);
 737        newmode.crtc[0x2] = Set8Bits (hBlankStart);
 738        newmode.crtc[0x3] = SetBitField (hBlankEnd, 4: 0, 4:0) | SetBit (7);
 739        newmode.crtc[0x4] = Set8Bits (hStart);
 740        newmode.crtc[0x5] = SetBitField (hBlankEnd, 5: 5, 7:7)
 741                | SetBitField (hEnd, 4: 0, 4:0);
 742        newmode.crtc[0x6] = SetBitField (vTotal, 7: 0, 7:0);
 743        newmode.crtc[0x7] = SetBitField (vTotal, 8: 8, 0:0)
 744                | SetBitField (vDisplay, 8: 8, 1:1)
 745                | SetBitField (vStart, 8: 8, 2:2)
 746                | SetBitField (vBlankStart, 8: 8, 3:3)
 747                | SetBit (4)
 748                | SetBitField (vTotal, 9: 9, 5:5)
 749                | SetBitField (vDisplay, 9: 9, 6:6)
 750                | SetBitField (vStart, 9: 9, 7:7);
 751        newmode.crtc[0x9] = SetBitField (vBlankStart, 9: 9, 5:5)
 752                | SetBit (6);
 753        newmode.crtc[0x10] = Set8Bits (vStart);
 754        newmode.crtc[0x11] = SetBitField (vEnd, 3: 0, 3:0)
 755                | SetBit (5);
 756        newmode.crtc[0x12] = Set8Bits (vDisplay);
 757        newmode.crtc[0x13] = (width / 8) * ((bpp + 1) / 8);
 758        newmode.crtc[0x15] = Set8Bits (vBlankStart);
 759        newmode.crtc[0x16] = Set8Bits (vBlankEnd);
 760
 761        newmode.ext.screen = SetBitField(hBlankEnd,6:6,4:4)
 762                | SetBitField(vBlankStart,10:10,3:3)
 763                | SetBitField(vStart,10:10,2:2)
 764                | SetBitField(vDisplay,10:10,1:1)
 765                | SetBitField(vTotal,10:10,0:0);
 766        newmode.ext.horiz  = SetBitField(hTotal,8:8,0:0) 
 767                | SetBitField(hDisplay,8:8,1:1)
 768                | SetBitField(hBlankStart,8:8,2:2)
 769                | SetBitField(hStart,8:8,3:3);
 770        newmode.ext.extra  = SetBitField(vTotal,11:11,0:0)
 771                | SetBitField(vDisplay,11:11,2:2)
 772                | SetBitField(vStart,11:11,4:4)
 773                | SetBitField(vBlankStart,11:11,6:6); 
 774
 775        if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
 776                int tmp = (hTotal >> 1) & ~1;
 777                newmode.ext.interlace = Set8Bits(tmp);
 778                newmode.ext.horiz |= SetBitField(tmp, 8:8,4:4);
 779        } else 
 780                newmode.ext.interlace = 0xff; /* interlace off */
 781
 782        if (par->riva.Architecture >= NV_ARCH_10)
 783                par->riva.CURSOR = (U032 __iomem *)(info->screen_base + par->riva.CursorStart);
 784
 785        if (info->var.sync & FB_SYNC_HOR_HIGH_ACT)
 786                newmode.misc_output &= ~0x40;
 787        else
 788                newmode.misc_output |= 0x40;
 789        if (info->var.sync & FB_SYNC_VERT_HIGH_ACT)
 790                newmode.misc_output &= ~0x80;
 791        else
 792                newmode.misc_output |= 0x80;    
 793
 794        rc = CalcStateExt(&par->riva, &newmode.ext, bpp, width,
 795                          hDisplaySize, height, dotClock);
 796        if (rc)
 797                goto out;
 798
 799        newmode.ext.scale = NV_RD32(par->riva.PRAMDAC, 0x00000848) &
 800                0xfff000ff;
 801        if (par->FlatPanel == 1) {
 802                newmode.ext.pixel |= (1 << 7);
 803                newmode.ext.scale |= (1 << 8);
 804        }
 805        if (par->SecondCRTC) {
 806                newmode.ext.head  = NV_RD32(par->riva.PCRTC0, 0x00000860) &
 807                        ~0x00001000;
 808                newmode.ext.head2 = NV_RD32(par->riva.PCRTC0, 0x00002860) |
 809                        0x00001000;
 810                newmode.ext.crtcOwner = 3;
 811                newmode.ext.pllsel |= 0x20000800;
 812                newmode.ext.vpll2 = newmode.ext.vpll;
 813        } else if (par->riva.twoHeads) {
 814                newmode.ext.head  =  NV_RD32(par->riva.PCRTC0, 0x00000860) |
 815                        0x00001000;
 816                newmode.ext.head2 =  NV_RD32(par->riva.PCRTC0, 0x00002860) &
 817                        ~0x00001000;
 818                newmode.ext.crtcOwner = 0;
 819                newmode.ext.vpll2 = NV_RD32(par->riva.PRAMDAC0, 0x00000520);
 820        }
 821        if (par->FlatPanel == 1) {
 822                newmode.ext.pixel |= (1 << 7);
 823                newmode.ext.scale |= (1 << 8);
 824        }
 825        newmode.ext.cursorConfig = 0x02000100;
 826        par->current_state = newmode;
 827        riva_load_state(par, &par->current_state);
 828        par->riva.LockUnlock(&par->riva, 0); /* important for HW cursor */
 829
 830out:
 831        rivafb_blank(FB_BLANK_UNBLANK, info);
 832        NVTRACE_LEAVE();
 833
 834        return rc;
 835}
 836
 837static void riva_update_var(struct fb_var_screeninfo *var,
 838                            const struct fb_videomode *modedb)
 839{
 840        NVTRACE_ENTER();
 841        var->xres = var->xres_virtual = modedb->xres;
 842        var->yres = modedb->yres;
 843        if (var->yres_virtual < var->yres)
 844            var->yres_virtual = var->yres;
 845        var->xoffset = var->yoffset = 0;
 846        var->pixclock = modedb->pixclock;
 847        var->left_margin = modedb->left_margin;
 848        var->right_margin = modedb->right_margin;
 849        var->upper_margin = modedb->upper_margin;
 850        var->lower_margin = modedb->lower_margin;
 851        var->hsync_len = modedb->hsync_len;
 852        var->vsync_len = modedb->vsync_len;
 853        var->sync = modedb->sync;
 854        var->vmode = modedb->vmode;
 855        NVTRACE_LEAVE();
 856}
 857
 858/**
 859 * rivafb_do_maximize - 
 860 * @info: pointer to fb_info object containing info for current riva board
 861 * @var:
 862 * @nom:
 863 * @den:
 864 *
 865 * DESCRIPTION:
 866 * .
 867 *
 868 * RETURNS:
 869 * -EINVAL on failure, 0 on success
 870 * 
 871 *
 872 * CALLED FROM:
 873 * rivafb_check_var()
 874 */
 875static int rivafb_do_maximize(struct fb_info *info,
 876                              struct fb_var_screeninfo *var,
 877                              int nom, int den)
 878{
 879        static struct {
 880                int xres, yres;
 881        } modes[] = {
 882                {1600, 1280},
 883                {1280, 1024},
 884                {1024, 768},
 885                {800, 600},
 886                {640, 480},
 887                {-1, -1}
 888        };
 889        int i;
 890
 891        NVTRACE_ENTER();
 892        /* use highest possible virtual resolution */
 893        if (var->xres_virtual == -1 && var->yres_virtual == -1) {
 894                printk(KERN_WARNING PFX
 895                       "using maximum available virtual resolution\n");
 896                for (i = 0; modes[i].xres != -1; i++) {
 897                        if (modes[i].xres * nom / den * modes[i].yres <
 898                            info->fix.smem_len)
 899                                break;
 900                }
 901                if (modes[i].xres == -1) {
 902                        printk(KERN_ERR PFX
 903                               "could not find a virtual resolution that fits into video memory!!\n");
 904                        NVTRACE("EXIT - EINVAL error\n");
 905                        return -EINVAL;
 906                }
 907                var->xres_virtual = modes[i].xres;
 908                var->yres_virtual = modes[i].yres;
 909
 910                printk(KERN_INFO PFX
 911                       "virtual resolution set to maximum of %dx%d\n",
 912                       var->xres_virtual, var->yres_virtual);
 913        } else if (var->xres_virtual == -1) {
 914                var->xres_virtual = (info->fix.smem_len * den /
 915                        (nom * var->yres_virtual)) & ~15;
 916                printk(KERN_WARNING PFX
 917                       "setting virtual X resolution to %d\n", var->xres_virtual);
 918        } else if (var->yres_virtual == -1) {
 919                var->xres_virtual = (var->xres_virtual + 15) & ~15;
 920                var->yres_virtual = info->fix.smem_len * den /
 921                        (nom * var->xres_virtual);
 922                printk(KERN_WARNING PFX
 923                       "setting virtual Y resolution to %d\n", var->yres_virtual);
 924        } else {
 925                var->xres_virtual = (var->xres_virtual + 15) & ~15;
 926                if (var->xres_virtual * nom / den * var->yres_virtual > info->fix.smem_len) {
 927                        printk(KERN_ERR PFX
 928                               "mode %dx%dx%d rejected...resolution too high to fit into video memory!\n",
 929                               var->xres, var->yres, var->bits_per_pixel);
 930                        NVTRACE("EXIT - EINVAL error\n");
 931                        return -EINVAL;
 932                }
 933        }
 934        
 935        if (var->xres_virtual * nom / den >= 8192) {
 936                printk(KERN_WARNING PFX
 937                       "virtual X resolution (%d) is too high, lowering to %d\n",
 938                       var->xres_virtual, 8192 * den / nom - 16);
 939                var->xres_virtual = 8192 * den / nom - 16;
 940        }
 941        
 942        if (var->xres_virtual < var->xres) {
 943                printk(KERN_ERR PFX
 944                       "virtual X resolution (%d) is smaller than real\n", var->xres_virtual);
 945                return -EINVAL;
 946        }
 947
 948        if (var->yres_virtual < var->yres) {
 949                printk(KERN_ERR PFX
 950                       "virtual Y resolution (%d) is smaller than real\n", var->yres_virtual);
 951                return -EINVAL;
 952        }
 953        if (var->yres_virtual > 0x7fff/nom)
 954                var->yres_virtual = 0x7fff/nom;
 955        if (var->xres_virtual > 0x7fff/nom)
 956                var->xres_virtual = 0x7fff/nom;
 957        NVTRACE_LEAVE();
 958        return 0;
 959}
 960
 961static void
 962riva_set_pattern(struct riva_par *par, int clr0, int clr1, int pat0, int pat1)
 963{
 964        RIVA_FIFO_FREE(par->riva, Patt, 4);
 965        NV_WR32(&par->riva.Patt->Color0, 0, clr0);
 966        NV_WR32(&par->riva.Patt->Color1, 0, clr1);
 967        NV_WR32(par->riva.Patt->Monochrome, 0, pat0);
 968        NV_WR32(par->riva.Patt->Monochrome, 4, pat1);
 969}
 970
 971/* acceleration routines */
 972static inline void wait_for_idle(struct riva_par *par)
 973{
 974        while (par->riva.Busy(&par->riva));
 975}
 976
 977/*
 978 * Set ROP.  Translate X rop into ROP3.  Internal routine.
 979 */
 980static void
 981riva_set_rop_solid(struct riva_par *par, int rop)
 982{
 983        riva_set_pattern(par, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF);
 984        RIVA_FIFO_FREE(par->riva, Rop, 1);
 985        NV_WR32(&par->riva.Rop->Rop3, 0, rop);
 986
 987}
 988
 989static void riva_setup_accel(struct fb_info *info)
 990{
 991        struct riva_par *par = info->par;
 992
 993        RIVA_FIFO_FREE(par->riva, Clip, 2);
 994        NV_WR32(&par->riva.Clip->TopLeft, 0, 0x0);
 995        NV_WR32(&par->riva.Clip->WidthHeight, 0,
 996                (info->var.xres_virtual & 0xffff) |
 997                (info->var.yres_virtual << 16));
 998        riva_set_rop_solid(par, 0xcc);
 999        wait_for_idle(par);
1000}
1001
1002/**
1003 * riva_get_cmap_len - query current color map length
1004 * @var: standard kernel fb changeable data
1005 *
1006 * DESCRIPTION:
1007 * Get current color map length.
1008 *
1009 * RETURNS:
1010 * Length of color map
1011 *
1012 * CALLED FROM:
1013 * rivafb_setcolreg()
1014 */
1015static int riva_get_cmap_len(const struct fb_var_screeninfo *var)
1016{
1017        int rc = 256;           /* reasonable default */
1018
1019        switch (var->green.length) {
1020        case 8:
1021                rc = 256;       /* 256 entries (2^8), 8 bpp and RGB8888 */
1022                break;
1023        case 5:
1024                rc = 32;        /* 32 entries (2^5), 16 bpp, RGB555 */
1025                break;
1026        case 6:
1027                rc = 64;        /* 64 entries (2^6), 16 bpp, RGB565 */
1028                break;          
1029        default:
1030                /* should not occur */
1031                break;
1032        }
1033        return rc;
1034}
1035
1036/* ------------------------------------------------------------------------- *
1037 *
1038 * framebuffer operations
1039 *
1040 * ------------------------------------------------------------------------- */
1041
1042static int rivafb_open(struct fb_info *info, int user)
1043{
1044        struct riva_par *par = info->par;
1045
1046        NVTRACE_ENTER();
1047        mutex_lock(&par->open_lock);
1048        if (!par->ref_count) {
1049#ifdef CONFIG_X86
1050                memset(&par->state, 0, sizeof(struct vgastate));
1051                par->state.flags = VGA_SAVE_MODE  | VGA_SAVE_FONTS;
1052                /* save the DAC for Riva128 */
1053                if (par->riva.Architecture == NV_ARCH_03)
1054                        par->state.flags |= VGA_SAVE_CMAP;
1055                save_vga(&par->state);
1056#endif
1057                /* vgaHWunlock() + riva unlock (0x7F) */
1058                CRTCout(par, 0x11, 0xFF);
1059                par->riva.LockUnlock(&par->riva, 0);
1060        
1061                riva_save_state(par, &par->initial_state);
1062        }
1063        par->ref_count++;
1064        mutex_unlock(&par->open_lock);
1065        NVTRACE_LEAVE();
1066        return 0;
1067}
1068
1069static int rivafb_release(struct fb_info *info, int user)
1070{
1071        struct riva_par *par = info->par;
1072
1073        NVTRACE_ENTER();
1074        mutex_lock(&par->open_lock);
1075        if (!par->ref_count) {
1076                mutex_unlock(&par->open_lock);
1077                return -EINVAL;
1078        }
1079        if (par->ref_count == 1) {
1080                par->riva.LockUnlock(&par->riva, 0);
1081                par->riva.LoadStateExt(&par->riva, &par->initial_state.ext);
1082                riva_load_state(par, &par->initial_state);
1083#ifdef CONFIG_X86
1084                restore_vga(&par->state);
1085#endif
1086                par->riva.LockUnlock(&par->riva, 1);
1087        }
1088        par->ref_count--;
1089        mutex_unlock(&par->open_lock);
1090        NVTRACE_LEAVE();
1091        return 0;
1092}
1093
1094static int rivafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1095{
1096        const struct fb_videomode *mode;
1097        struct riva_par *par = info->par;
1098        int nom, den;           /* translating from pixels->bytes */
1099        int mode_valid = 0;
1100        
1101        NVTRACE_ENTER();
1102        switch (var->bits_per_pixel) {
1103        case 1 ... 8:
1104                var->red.offset = var->green.offset = var->blue.offset = 0;
1105                var->red.length = var->green.length = var->blue.length = 8;
1106                var->bits_per_pixel = 8;
1107                nom = den = 1;
1108                break;
1109        case 9 ... 15:
1110                var->green.length = 5;
1111                /* fall through */
1112        case 16:
1113                var->bits_per_pixel = 16;
1114                /* The Riva128 supports RGB555 only */
1115                if (par->riva.Architecture == NV_ARCH_03)
1116                        var->green.length = 5;
1117                if (var->green.length == 5) {
1118                        /* 0rrrrrgg gggbbbbb */
1119                        var->red.offset = 10;
1120                        var->green.offset = 5;
1121                        var->blue.offset = 0;
1122                        var->red.length = 5;
1123                        var->green.length = 5;
1124                        var->blue.length = 5;
1125                } else {
1126                        /* rrrrrggg gggbbbbb */
1127                        var->red.offset = 11;
1128                        var->green.offset = 5;
1129                        var->blue.offset = 0;
1130                        var->red.length = 5;
1131                        var->green.length = 6;
1132                        var->blue.length = 5;
1133                }
1134                nom = 2;
1135                den = 1;
1136                break;
1137        case 17 ... 32:
1138                var->red.length = var->green.length = var->blue.length = 8;
1139                var->bits_per_pixel = 32;
1140                var->red.offset = 16;
1141                var->green.offset = 8;
1142                var->blue.offset = 0;
1143                nom = 4;
1144                den = 1;
1145                break;
1146        default:
1147                printk(KERN_ERR PFX
1148                       "mode %dx%dx%d rejected...color depth not supported.\n",
1149                       var->xres, var->yres, var->bits_per_pixel);
1150                NVTRACE("EXIT, returning -EINVAL\n");
1151                return -EINVAL;
1152        }
1153
1154        if (!strictmode) {
1155                if (!info->monspecs.vfmax || !info->monspecs.hfmax ||
1156                    !info->monspecs.dclkmax || !fb_validate_mode(var, info))
1157                        mode_valid = 1;
1158        }
1159
1160        /* calculate modeline if supported by monitor */
1161        if (!mode_valid && info->monspecs.gtf) {
1162                if (!fb_get_mode(FB_MAXTIMINGS, 0, var, info))
1163                        mode_valid = 1;
1164        }
1165
1166        if (!mode_valid) {
1167                mode = fb_find_best_mode(var, &info->modelist);
1168                if (mode) {
1169                        riva_update_var(var, mode);
1170                        mode_valid = 1;
1171                }
1172        }
1173
1174        if (!mode_valid && info->monspecs.modedb_len)
1175                return -EINVAL;
1176
1177        if (var->xres_virtual < var->xres)
1178                var->xres_virtual = var->xres;
1179        if (var->yres_virtual <= var->yres)
1180                var->yres_virtual = -1;
1181        if (rivafb_do_maximize(info, var, nom, den) < 0)
1182                return -EINVAL;
1183
1184        if (var->xoffset < 0)
1185                var->xoffset = 0;
1186        if (var->yoffset < 0)
1187                var->yoffset = 0;
1188
1189        /* truncate xoffset and yoffset to maximum if too high */
1190        if (var->xoffset > var->xres_virtual - var->xres)
1191                var->xoffset = var->xres_virtual - var->xres - 1;
1192
1193        if (var->yoffset > var->yres_virtual - var->yres)
1194                var->yoffset = var->yres_virtual - var->yres - 1;
1195
1196        var->red.msb_right = 
1197            var->green.msb_right =
1198            var->blue.msb_right =
1199            var->transp.offset = var->transp.length = var->transp.msb_right = 0;
1200        NVTRACE_LEAVE();
1201        return 0;
1202}
1203
1204static int rivafb_set_par(struct fb_info *info)
1205{
1206        struct riva_par *par = info->par;
1207        int rc = 0;
1208
1209        NVTRACE_ENTER();
1210        /* vgaHWunlock() + riva unlock (0x7F) */
1211        CRTCout(par, 0x11, 0xFF);
1212        par->riva.LockUnlock(&par->riva, 0);
1213        rc = riva_load_video_mode(info);
1214        if (rc)
1215                goto out;
1216        if(!(info->flags & FBINFO_HWACCEL_DISABLED))
1217                riva_setup_accel(info);
1218        
1219        par->cursor_reset = 1;
1220        info->fix.line_length = (info->var.xres_virtual * (info->var.bits_per_pixel >> 3));
1221        info->fix.visual = (info->var.bits_per_pixel == 8) ?
1222                                FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR;
1223
1224        if (info->flags & FBINFO_HWACCEL_DISABLED)
1225                info->pixmap.scan_align = 1;
1226        else
1227                info->pixmap.scan_align = 4;
1228
1229out:
1230        NVTRACE_LEAVE();
1231        return rc;
1232}
1233
1234/**
1235 * rivafb_pan_display
1236 * @var: standard kernel fb changeable data
1237 * @con: TODO
1238 * @info: pointer to fb_info object containing info for current riva board
1239 *
1240 * DESCRIPTION:
1241 * Pan (or wrap, depending on the `vmode' field) the display using the
1242 * `xoffset' and `yoffset' fields of the `var' structure.
1243 * If the values don't fit, return -EINVAL.
1244 *
1245 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
1246 */
1247static int rivafb_pan_display(struct fb_var_screeninfo *var,
1248                              struct fb_info *info)
1249{
1250        struct riva_par *par = info->par;
1251        unsigned int base;
1252
1253        NVTRACE_ENTER();
1254        base = var->yoffset * info->fix.line_length + var->xoffset;
1255        par->riva.SetStartAddress(&par->riva, base);
1256        NVTRACE_LEAVE();
1257        return 0;
1258}
1259
1260static int rivafb_blank(int blank, struct fb_info *info)
1261{
1262        struct riva_par *par= info->par;
1263        unsigned char tmp, vesa;
1264
1265        tmp = SEQin(par, 0x01) & ~0x20; /* screen on/off */
1266        vesa = CRTCin(par, 0x1a) & ~0xc0;       /* sync on/off */
1267
1268        NVTRACE_ENTER();
1269
1270        if (blank)
1271                tmp |= 0x20;
1272
1273        switch (blank) {
1274        case FB_BLANK_UNBLANK:
1275        case FB_BLANK_NORMAL:
1276                break;
1277        case FB_BLANK_VSYNC_SUSPEND:
1278                vesa |= 0x80;
1279                break;
1280        case FB_BLANK_HSYNC_SUSPEND:
1281                vesa |= 0x40;
1282                break;
1283        case FB_BLANK_POWERDOWN:
1284                vesa |= 0xc0;
1285                break;
1286        }
1287
1288        SEQout(par, 0x01, tmp);
1289        CRTCout(par, 0x1a, vesa);
1290
1291        NVTRACE_LEAVE();
1292
1293        return 0;
1294}
1295
1296/**
1297 * rivafb_setcolreg
1298 * @regno: register index
1299 * @red: red component
1300 * @green: green component
1301 * @blue: blue component
1302 * @transp: transparency
1303 * @info: pointer to fb_info object containing info for current riva board
1304 *
1305 * DESCRIPTION:
1306 * Set a single color register. The values supplied have a 16 bit
1307 * magnitude.
1308 *
1309 * RETURNS:
1310 * Return != 0 for invalid regno.
1311 *
1312 * CALLED FROM:
1313 * fbcmap.c:fb_set_cmap()
1314 */
1315static int rivafb_setcolreg(unsigned regno, unsigned red, unsigned green,
1316                          unsigned blue, unsigned transp,
1317                          struct fb_info *info)
1318{
1319        struct riva_par *par = info->par;
1320        RIVA_HW_INST *chip = &par->riva;
1321        int i;
1322
1323        if (regno >= riva_get_cmap_len(&info->var))
1324                        return -EINVAL;
1325
1326        if (info->var.grayscale) {
1327                /* gray = 0.30*R + 0.59*G + 0.11*B */
1328                red = green = blue =
1329                    (red * 77 + green * 151 + blue * 28) >> 8;
1330        }
1331
1332        if (regno < 16 && info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
1333                ((u32 *) info->pseudo_palette)[regno] =
1334                        (regno << info->var.red.offset) |
1335                        (regno << info->var.green.offset) |
1336                        (regno << info->var.blue.offset);
1337                /*
1338                 * The Riva128 2D engine requires color information in
1339                 * TrueColor format even if framebuffer is in DirectColor
1340                 */
1341                if (par->riva.Architecture == NV_ARCH_03) {
1342                        switch (info->var.bits_per_pixel) {
1343                        case 16:
1344                                par->palette[regno] = ((red & 0xf800) >> 1) |
1345                                        ((green & 0xf800) >> 6) |
1346                                        ((blue & 0xf800) >> 11);
1347                                break;
1348                        case 32:
1349                                par->palette[regno] = ((red & 0xff00) << 8) |
1350                                        ((green & 0xff00)) |
1351                                        ((blue & 0xff00) >> 8);
1352                                break;
1353                        }
1354                }
1355        }
1356
1357        switch (info->var.bits_per_pixel) {
1358        case 8:
1359                /* "transparent" stuff is completely ignored. */
1360                riva_wclut(chip, regno, red >> 8, green >> 8, blue >> 8);
1361                break;
1362        case 16:
1363                if (info->var.green.length == 5) {
1364                        for (i = 0; i < 8; i++) {
1365                                riva_wclut(chip, regno*8+i, red >> 8,
1366                                           green >> 8, blue >> 8);
1367                        }
1368                } else {
1369                        u8 r, g, b;
1370
1371                        if (regno < 32) {
1372                                for (i = 0; i < 8; i++) {
1373                                        riva_wclut(chip, regno*8+i,
1374                                                   red >> 8, green >> 8,
1375                                                   blue >> 8);
1376                                }
1377                        }
1378                        riva_rclut(chip, regno*4, &r, &g, &b);
1379                        for (i = 0; i < 4; i++)
1380                                riva_wclut(chip, regno*4+i, r,
1381                                           green >> 8, b);
1382                }
1383                break;
1384        case 32:
1385                riva_wclut(chip, regno, red >> 8, green >> 8, blue >> 8);
1386                break;
1387        default:
1388                /* do nothing */
1389                break;
1390        }
1391        return 0;
1392}
1393
1394/**
1395 * rivafb_fillrect - hardware accelerated color fill function
1396 * @info: pointer to fb_info structure
1397 * @rect: pointer to fb_fillrect structure
1398 *
1399 * DESCRIPTION:
1400 * This function fills up a region of framebuffer memory with a solid
1401 * color with a choice of two different ROP's, copy or invert.
1402 *
1403 * CALLED FROM:
1404 * framebuffer hook
1405 */
1406static void rivafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
1407{
1408        struct riva_par *par = info->par;
1409        u_int color, rop = 0;
1410
1411        if ((info->flags & FBINFO_HWACCEL_DISABLED)) {
1412                cfb_fillrect(info, rect);
1413                return;
1414        }
1415
1416        if (info->var.bits_per_pixel == 8)
1417                color = rect->color;
1418        else {
1419                if (par->riva.Architecture != NV_ARCH_03)
1420                        color = ((u32 *)info->pseudo_palette)[rect->color];
1421                else
1422                        color = par->palette[rect->color];
1423        }
1424
1425        switch (rect->rop) {
1426        case ROP_XOR:
1427                rop = 0x66;
1428                break;
1429        case ROP_COPY:
1430        default:
1431                rop = 0xCC;
1432                break;
1433        }
1434
1435        riva_set_rop_solid(par, rop);
1436
1437        RIVA_FIFO_FREE(par->riva, Bitmap, 1);
1438        NV_WR32(&par->riva.Bitmap->Color1A, 0, color);
1439
1440        RIVA_FIFO_FREE(par->riva, Bitmap, 2);
1441        NV_WR32(&par->riva.Bitmap->UnclippedRectangle[0].TopLeft, 0,
1442                (rect->dx << 16) | rect->dy);
1443        mb();
1444        NV_WR32(&par->riva.Bitmap->UnclippedRectangle[0].WidthHeight, 0,
1445                (rect->width << 16) | rect->height);
1446        mb();
1447        riva_set_rop_solid(par, 0xcc);
1448
1449}
1450
1451/**
1452 * rivafb_copyarea - hardware accelerated blit function
1453 * @info: pointer to fb_info structure
1454 * @region: pointer to fb_copyarea structure
1455 *
1456 * DESCRIPTION:
1457 * This copies an area of pixels from one location to another
1458 *
1459 * CALLED FROM:
1460 * framebuffer hook
1461 */
1462static void rivafb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
1463{
1464        struct riva_par *par = info->par;
1465
1466        if ((info->flags & FBINFO_HWACCEL_DISABLED)) {
1467                cfb_copyarea(info, region);
1468                return;
1469        }
1470
1471        RIVA_FIFO_FREE(par->riva, Blt, 3);
1472        NV_WR32(&par->riva.Blt->TopLeftSrc, 0,
1473                (region->sy << 16) | region->sx);
1474        NV_WR32(&par->riva.Blt->TopLeftDst, 0,
1475                (region->dy << 16) | region->dx);
1476        mb();
1477        NV_WR32(&par->riva.Blt->WidthHeight, 0,
1478                (region->height << 16) | region->width);
1479        mb();
1480}
1481
1482static inline void convert_bgcolor_16(u32 *col)
1483{
1484        *col = ((*col & 0x0000F800) << 8)
1485                | ((*col & 0x00007E0) << 5)
1486                | ((*col & 0x0000001F) << 3)
1487                |          0xFF000000;
1488        mb();
1489}
1490
1491/**
1492 * rivafb_imageblit: hardware accelerated color expand function
1493 * @info: pointer to fb_info structure
1494 * @image: pointer to fb_image structure
1495 *
1496 * DESCRIPTION:
1497 * If the source is a monochrome bitmap, the function fills up a a region
1498 * of framebuffer memory with pixels whose color is determined by the bit
1499 * setting of the bitmap, 1 - foreground, 0 - background.
1500 *
1501 * If the source is not a monochrome bitmap, color expansion is not done.
1502 * In this case, it is channeled to a software function.
1503 *
1504 * CALLED FROM:
1505 * framebuffer hook
1506 */
1507static void rivafb_imageblit(struct fb_info *info, 
1508                             const struct fb_image *image)
1509{
1510        struct riva_par *par = info->par;
1511        u32 fgx = 0, bgx = 0, width, tmp;
1512        u8 *cdat = (u8 *) image->data;
1513        volatile u32 __iomem *d;
1514        int i, size;
1515
1516        if ((info->flags & FBINFO_HWACCEL_DISABLED) || image->depth != 1) {
1517                cfb_imageblit(info, image);
1518                return;
1519        }
1520
1521        switch (info->var.bits_per_pixel) {
1522        case 8:
1523                fgx = image->fg_color;
1524                bgx = image->bg_color;
1525                break;
1526        case 16:
1527        case 32:
1528                if (par->riva.Architecture != NV_ARCH_03) {
1529                        fgx = ((u32 *)info->pseudo_palette)[image->fg_color];
1530                        bgx = ((u32 *)info->pseudo_palette)[image->bg_color];
1531                } else {
1532                        fgx = par->palette[image->fg_color];
1533                        bgx = par->palette[image->bg_color];
1534                }
1535                if (info->var.green.length == 6)
1536                        convert_bgcolor_16(&bgx);       
1537                break;
1538        }
1539
1540        RIVA_FIFO_FREE(par->riva, Bitmap, 7);
1541        NV_WR32(&par->riva.Bitmap->ClipE.TopLeft, 0,
1542                (image->dy << 16) | (image->dx & 0xFFFF));
1543        NV_WR32(&par->riva.Bitmap->ClipE.BottomRight, 0,
1544                (((image->dy + image->height) << 16) |
1545                 ((image->dx + image->width) & 0xffff)));
1546        NV_WR32(&par->riva.Bitmap->Color0E, 0, bgx);
1547        NV_WR32(&par->riva.Bitmap->Color1E, 0, fgx);
1548        NV_WR32(&par->riva.Bitmap->WidthHeightInE, 0,
1549                (image->height << 16) | ((image->width + 31) & ~31));
1550        NV_WR32(&par->riva.Bitmap->WidthHeightOutE, 0,
1551                (image->height << 16) | ((image->width + 31) & ~31));
1552        NV_WR32(&par->riva.Bitmap->PointE, 0,
1553                (image->dy << 16) | (image->dx & 0xFFFF));
1554
1555        d = &par->riva.Bitmap->MonochromeData01E;
1556
1557        width = (image->width + 31)/32;
1558        size = width * image->height;
1559        while (size >= 16) {
1560                RIVA_FIFO_FREE(par->riva, Bitmap, 16);
1561                for (i = 0; i < 16; i++) {
1562                        tmp = *((u32 *)cdat);
1563                        cdat = (u8 *)((u32 *)cdat + 1);
1564                        reverse_order(&tmp);
1565                        NV_WR32(d, i*4, tmp);
1566                }
1567                size -= 16;
1568        }
1569        if (size) {
1570                RIVA_FIFO_FREE(par->riva, Bitmap, size);
1571                for (i = 0; i < size; i++) {
1572                        tmp = *((u32 *) cdat);
1573                        cdat = (u8 *)((u32 *)cdat + 1);
1574                        reverse_order(&tmp);
1575                        NV_WR32(d, i*4, tmp);
1576                }
1577        }
1578}
1579
1580/**
1581 * rivafb_cursor - hardware cursor function
1582 * @info: pointer to info structure
1583 * @cursor: pointer to fbcursor structure
1584 *
1585 * DESCRIPTION:
1586 * A cursor function that supports displaying a cursor image via hardware.
1587 * Within the kernel, copy and invert rops are supported.  If exported
1588 * to user space, only the copy rop will be supported.
1589 *
1590 * CALLED FROM
1591 * framebuffer hook
1592 */
1593static int rivafb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1594{
1595        struct riva_par *par = info->par;
1596        u8 data[MAX_CURS * MAX_CURS/8];
1597        int i, set = cursor->set;
1598        u16 fg, bg;
1599
1600        if (cursor->image.width > MAX_CURS || cursor->image.height > MAX_CURS)
1601                return -ENXIO;
1602
1603        par->riva.ShowHideCursor(&par->riva, 0);
1604
1605        if (par->cursor_reset) {
1606                set = FB_CUR_SETALL;
1607                par->cursor_reset = 0;
1608        }
1609
1610        if (set & FB_CUR_SETSIZE)
1611                memset_io(par->riva.CURSOR, 0, MAX_CURS * MAX_CURS * 2);
1612
1613        if (set & FB_CUR_SETPOS) {
1614                u32 xx, yy, temp;
1615
1616                yy = cursor->image.dy - info->var.yoffset;
1617                xx = cursor->image.dx - info->var.xoffset;
1618                temp = xx & 0xFFFF;
1619                temp |= yy << 16;
1620
1621                NV_WR32(par->riva.PRAMDAC, 0x0000300, temp);
1622        }
1623
1624
1625        if (set & (FB_CUR_SETSHAPE | FB_CUR_SETCMAP | FB_CUR_SETIMAGE)) {
1626                u32 bg_idx = cursor->image.bg_color;
1627                u32 fg_idx = cursor->image.fg_color;
1628                u32 s_pitch = (cursor->image.width+7) >> 3;
1629                u32 d_pitch = MAX_CURS/8;
1630                u8 *dat = (u8 *) cursor->image.data;
1631                u8 *msk = (u8 *) cursor->mask;
1632                u8 *src;
1633                
1634                src = kmalloc(s_pitch * cursor->image.height, GFP_ATOMIC);
1635
1636                if (src) {
1637                        switch (cursor->rop) {
1638                        case ROP_XOR:
1639                                for (i = 0; i < s_pitch * cursor->image.height; i++)
1640                                        src[i] = dat[i] ^ msk[i];
1641                                break;
1642                        case ROP_COPY:
1643                        default:
1644                                for (i = 0; i < s_pitch * cursor->image.height; i++)
1645                                        src[i] = dat[i] & msk[i];
1646                                break;
1647                        }
1648
1649                        fb_pad_aligned_buffer(data, d_pitch, src, s_pitch,
1650                                                cursor->image.height);
1651
1652                        bg = ((info->cmap.red[bg_idx] & 0xf8) << 7) |
1653                                ((info->cmap.green[bg_idx] & 0xf8) << 2) |
1654                                ((info->cmap.blue[bg_idx] & 0xf8) >> 3) |
1655                                1 << 15;
1656
1657                        fg = ((info->cmap.red[fg_idx] & 0xf8) << 7) |
1658                                ((info->cmap.green[fg_idx] & 0xf8) << 2) |
1659                                ((info->cmap.blue[fg_idx] & 0xf8) >> 3) |
1660                                1 << 15;
1661
1662                        par->riva.LockUnlock(&par->riva, 0);
1663
1664                        rivafb_load_cursor_image(par, data, bg, fg,
1665                                                 cursor->image.width,
1666                                                 cursor->image.height);
1667                        kfree(src);
1668                }
1669        }
1670
1671        if (cursor->enable)
1672                par->riva.ShowHideCursor(&par->riva, 1);
1673
1674        return 0;
1675}
1676
1677static int rivafb_sync(struct fb_info *info)
1678{
1679        struct riva_par *par = info->par;
1680
1681        wait_for_idle(par);
1682        return 0;
1683}
1684
1685/* ------------------------------------------------------------------------- *
1686 *
1687 * initialization helper functions
1688 *
1689 * ------------------------------------------------------------------------- */
1690
1691/* kernel interface */
1692static struct fb_ops riva_fb_ops = {
1693        .owner          = THIS_MODULE,
1694        .fb_open        = rivafb_open,
1695        .fb_release     = rivafb_release,
1696        .fb_check_var   = rivafb_check_var,
1697        .fb_set_par     = rivafb_set_par,
1698        .fb_setcolreg   = rivafb_setcolreg,
1699        .fb_pan_display = rivafb_pan_display,
1700        .fb_blank       = rivafb_blank,
1701        .fb_fillrect    = rivafb_fillrect,
1702        .fb_copyarea    = rivafb_copyarea,
1703        .fb_imageblit   = rivafb_imageblit,
1704        .fb_cursor      = rivafb_cursor,        
1705        .fb_sync        = rivafb_sync,
1706};
1707
1708static int __devinit riva_set_fbinfo(struct fb_info *info)
1709{
1710        unsigned int cmap_len;
1711        struct riva_par *par = info->par;
1712
1713        NVTRACE_ENTER();
1714        info->flags = FBINFO_DEFAULT
1715                    | FBINFO_HWACCEL_XPAN
1716                    | FBINFO_HWACCEL_YPAN
1717                    | FBINFO_HWACCEL_COPYAREA
1718                    | FBINFO_HWACCEL_FILLRECT
1719                    | FBINFO_HWACCEL_IMAGEBLIT;
1720
1721        /* Accel seems to not work properly on NV30 yet...*/
1722        if ((par->riva.Architecture == NV_ARCH_30) || noaccel) {
1723                printk(KERN_DEBUG PFX "disabling acceleration\n");
1724                info->flags |= FBINFO_HWACCEL_DISABLED;
1725        }
1726
1727        info->var = rivafb_default_var;
1728        info->fix.visual = (info->var.bits_per_pixel == 8) ?
1729                                FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR;
1730
1731        info->pseudo_palette = par->pseudo_palette;
1732
1733        cmap_len = riva_get_cmap_len(&info->var);
1734        fb_alloc_cmap(&info->cmap, cmap_len, 0);        
1735
1736        info->pixmap.size = 8 * 1024;
1737        info->pixmap.buf_align = 4;
1738        info->pixmap.access_align = 32;
1739        info->pixmap.flags = FB_PIXMAP_SYSTEM;
1740        info->var.yres_virtual = -1;
1741        NVTRACE_LEAVE();
1742        return (rivafb_check_var(&info->var, info));
1743}
1744
1745#ifdef CONFIG_PPC_OF
1746static int __devinit riva_get_EDID_OF(struct fb_info *info, struct pci_dev *pd)
1747{
1748        struct riva_par *par = info->par;
1749        struct device_node *dp;
1750        const unsigned char *pedid = NULL;
1751        const unsigned char *disptype = NULL;
1752        static char *propnames[] = {
1753                "DFP,EDID", "LCD,EDID", "EDID", "EDID1", "EDID,B", "EDID,A", NULL };
1754        int i;
1755
1756        NVTRACE_ENTER();
1757        dp = pci_device_to_OF_node(pd);
1758        for (; dp != NULL; dp = dp->child) {
1759                disptype = of_get_property(dp, "display-type", NULL);
1760                if (disptype == NULL)
1761                        continue;
1762                if (strncmp(disptype, "LCD", 3) != 0)
1763                        continue;
1764                for (i = 0; propnames[i] != NULL; ++i) {
1765                        pedid = of_get_property(dp, propnames[i], NULL);
1766                        if (pedid != NULL) {
1767                                par->EDID = (unsigned char *)pedid;
1768                                NVTRACE("LCD found.\n");
1769                                return 1;
1770                        }
1771                }
1772        }
1773        NVTRACE_LEAVE();
1774        return 0;
1775}
1776#endif /* CONFIG_PPC_OF */
1777
1778#if defined(CONFIG_FB_RIVA_I2C) && !defined(CONFIG_PPC_OF)
1779static int __devinit riva_get_EDID_i2c(struct fb_info *info)
1780{
1781        struct riva_par *par = info->par;
1782        struct fb_var_screeninfo var;
1783        int i;
1784
1785        NVTRACE_ENTER();
1786        riva_create_i2c_busses(par);
1787        for (i = 0; i < 3; i++) {
1788                if (!par->chan[i].par)
1789                        continue;
1790                riva_probe_i2c_connector(par, i, &par->EDID);
1791                if (par->EDID && !fb_parse_edid(par->EDID, &var)) {
1792                        printk(PFX "Found EDID Block from BUS %i\n", i);
1793                        break;
1794                }
1795        }
1796
1797        NVTRACE_LEAVE();
1798        return (par->EDID) ? 1 : 0;
1799}
1800#endif /* CONFIG_FB_RIVA_I2C */
1801
1802static void __devinit riva_update_default_var(struct fb_var_screeninfo *var,
1803                                              struct fb_info *info)
1804{
1805        struct fb_monspecs *specs = &info->monspecs;
1806        struct fb_videomode modedb;
1807
1808        NVTRACE_ENTER();
1809        /* respect mode options */
1810        if (mode_option) {
1811                fb_find_mode(var, info, mode_option,
1812                             specs->modedb, specs->modedb_len,
1813                             NULL, 8);
1814        } else if (specs->modedb != NULL) {
1815                /* get preferred timing */
1816                if (info->monspecs.misc & FB_MISC_1ST_DETAIL) {
1817                        int i;
1818
1819                        for (i = 0; i < specs->modedb_len; i++) {
1820                                if (specs->modedb[i].flag & FB_MODE_IS_FIRST) {
1821                                        modedb = specs->modedb[i];
1822                                        break;
1823                                }
1824                        }
1825                } else {
1826                        /* otherwise, get first mode in database */
1827                        modedb = specs->modedb[0];
1828                }
1829                var->bits_per_pixel = 8;
1830                riva_update_var(var, &modedb);
1831        }
1832        NVTRACE_LEAVE();
1833}
1834
1835
1836static void __devinit riva_get_EDID(struct fb_info *info, struct pci_dev *pdev)
1837{
1838        NVTRACE_ENTER();
1839#ifdef CONFIG_PPC_OF
1840        if (!riva_get_EDID_OF(info, pdev))
1841                printk(PFX "could not retrieve EDID from OF\n");
1842#elif defined(CONFIG_FB_RIVA_I2C)
1843        if (!riva_get_EDID_i2c(info))
1844                printk(PFX "could not retrieve EDID from DDC/I2C\n");
1845#endif
1846        NVTRACE_LEAVE();
1847}
1848
1849
1850static void __devinit riva_get_edidinfo(struct fb_info *info)
1851{
1852        struct fb_var_screeninfo *var = &rivafb_default_var;
1853        struct riva_par *par = info->par;
1854
1855        fb_edid_to_monspecs(par->EDID, &info->monspecs);
1856        fb_videomode_to_modelist(info->monspecs.modedb, info->monspecs.modedb_len,
1857                                 &info->modelist);
1858        riva_update_default_var(var, info);
1859
1860        /* if user specified flatpanel, we respect that */
1861        if (info->monspecs.input & FB_DISP_DDI)
1862                par->FlatPanel = 1;
1863}
1864
1865/* ------------------------------------------------------------------------- *
1866 *
1867 * PCI bus
1868 *
1869 * ------------------------------------------------------------------------- */
1870
1871static u32 __devinit riva_get_arch(struct pci_dev *pd)
1872{
1873        u32 arch = 0;
1874
1875        switch (pd->device & 0x0ff0) {
1876                case 0x0100:   /* GeForce 256 */
1877                case 0x0110:   /* GeForce2 MX */
1878                case 0x0150:   /* GeForce2 */
1879                case 0x0170:   /* GeForce4 MX */
1880                case 0x0180:   /* GeForce4 MX (8x AGP) */
1881                case 0x01A0:   /* nForce */
1882                case 0x01F0:   /* nForce2 */
1883                     arch =  NV_ARCH_10;
1884                     break;
1885                case 0x0200:   /* GeForce3 */
1886                case 0x0250:   /* GeForce4 Ti */
1887                case 0x0280:   /* GeForce4 Ti (8x AGP) */
1888                     arch =  NV_ARCH_20;
1889                     break;
1890                case 0x0300:   /* GeForceFX 5800 */
1891                case 0x0310:   /* GeForceFX 5600 */
1892                case 0x0320:   /* GeForceFX 5200 */
1893                case 0x0330:   /* GeForceFX 5900 */
1894                case 0x0340:   /* GeForceFX 5700 */
1895                     arch =  NV_ARCH_30;
1896                     break;
1897                case 0x0020:   /* TNT, TNT2 */
1898                     arch =  NV_ARCH_04;
1899                     break;
1900                case 0x0010:   /* Riva128 */
1901                     arch =  NV_ARCH_03;
1902                     break;
1903                default:   /* unknown architecture */
1904                     break;
1905        }
1906        return arch;
1907}
1908
1909static int __devinit rivafb_probe(struct pci_dev *pd,
1910                                const struct pci_device_id *ent)
1911{
1912        struct riva_par *default_par;
1913        struct fb_info *info;
1914        int ret;
1915
1916        NVTRACE_ENTER();
1917        assert(pd != NULL);
1918
1919        info = framebuffer_alloc(sizeof(struct riva_par), &pd->dev);
1920        if (!info) {
1921                printk (KERN_ERR PFX "could not allocate memory\n");
1922                ret = -ENOMEM;
1923                goto err_ret;
1924        }
1925        default_par = info->par;
1926        default_par->pdev = pd;
1927
1928        info->pixmap.addr = kzalloc(8 * 1024, GFP_KERNEL);
1929        if (info->pixmap.addr == NULL) {
1930                ret = -ENOMEM;
1931                goto err_framebuffer_release;
1932        }
1933
1934        ret = pci_enable_device(pd);
1935        if (ret < 0) {
1936                printk(KERN_ERR PFX "cannot enable PCI device\n");
1937                goto err_free_pixmap;
1938        }
1939
1940        ret = pci_request_regions(pd, "rivafb");
1941        if (ret < 0) {
1942                printk(KERN_ERR PFX "cannot request PCI regions\n");
1943                goto err_disable_device;
1944        }
1945
1946        mutex_init(&default_par->open_lock);
1947        default_par->riva.Architecture = riva_get_arch(pd);
1948
1949        default_par->Chipset = (pd->vendor << 16) | pd->device;
1950        printk(KERN_INFO PFX "nVidia device/chipset %X\n",default_par->Chipset);
1951        
1952        if(default_par->riva.Architecture == 0) {
1953                printk(KERN_ERR PFX "unknown NV_ARCH\n");
1954                ret=-ENODEV;
1955                goto err_release_region;
1956        }
1957        if(default_par->riva.Architecture == NV_ARCH_10 ||
1958           default_par->riva.Architecture == NV_ARCH_20 ||
1959           default_par->riva.Architecture == NV_ARCH_30) {
1960                sprintf(rivafb_fix.id, "NV%x", (pd->device & 0x0ff0) >> 4);
1961        } else {
1962                sprintf(rivafb_fix.id, "NV%x", default_par->riva.Architecture);
1963        }
1964
1965        default_par->FlatPanel = flatpanel;
1966        if (flatpanel == 1)
1967                printk(KERN_INFO PFX "flatpanel support enabled\n");
1968        default_par->forceCRTC = forceCRTC;
1969        
1970        rivafb_fix.mmio_len = pci_resource_len(pd, 0);
1971        rivafb_fix.smem_len = pci_resource_len(pd, 1);
1972
1973        {
1974                /* enable IO and mem if not already done */
1975                unsigned short cmd;
1976
1977                pci_read_config_word(pd, PCI_COMMAND, &cmd);
1978                cmd |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
1979                pci_write_config_word(pd, PCI_COMMAND, cmd);
1980        }
1981        
1982        rivafb_fix.mmio_start = pci_resource_start(pd, 0);
1983        rivafb_fix.smem_start = pci_resource_start(pd, 1);
1984
1985        default_par->ctrl_base = ioremap(rivafb_fix.mmio_start,
1986                                         rivafb_fix.mmio_len);
1987        if (!default_par->ctrl_base) {
1988                printk(KERN_ERR PFX "cannot ioremap MMIO base\n");
1989                ret = -EIO;
1990                goto err_release_region;
1991        }
1992
1993        switch (default_par->riva.Architecture) {
1994        case NV_ARCH_03:
1995                /* Riva128's PRAMIN is in the "framebuffer" space
1996                 * Since these cards were never made with more than 8 megabytes
1997                 * we can safely allocate this separately.
1998                 */
1999                default_par->riva.PRAMIN = ioremap(rivafb_fix.smem_start + 0x00C00000, 0x00008000);
2000                if (!default_par->riva.PRAMIN) {
2001                        printk(KERN_ERR PFX "cannot ioremap PRAMIN region\n");
2002                        ret = -EIO;
2003                        goto err_iounmap_ctrl_base;
2004                }
2005                break;
2006        case NV_ARCH_04:
2007        case NV_ARCH_10:
2008        case NV_ARCH_20:
2009        case NV_ARCH_30:
2010                default_par->riva.PCRTC0 =
2011                        (u32 __iomem *)(default_par->ctrl_base + 0x00600000);
2012                default_par->riva.PRAMIN =
2013                        (u32 __iomem *)(default_par->ctrl_base + 0x00710000);
2014                break;
2015        }
2016        riva_common_setup(default_par);
2017
2018        if (default_par->riva.Architecture == NV_ARCH_03) {
2019                default_par->riva.PCRTC = default_par->riva.PCRTC0
2020                                        = default_par->riva.PGRAPH;
2021        }
2022
2023        rivafb_fix.smem_len = riva_get_memlen(default_par) * 1024;
2024        default_par->dclk_max = riva_get_maxdclk(default_par) * 1000;
2025        info->screen_base = ioremap(rivafb_fix.smem_start,
2026                                    rivafb_fix.smem_len);
2027        if (!info->screen_base) {
2028                printk(KERN_ERR PFX "cannot ioremap FB base\n");
2029                ret = -EIO;
2030                goto err_iounmap_pramin;
2031        }
2032
2033#ifdef CONFIG_MTRR
2034        if (!nomtrr) {
2035                default_par->mtrr.vram = mtrr_add(rivafb_fix.smem_start,
2036                                                  rivafb_fix.smem_len,
2037                                                  MTRR_TYPE_WRCOMB, 1);
2038                if (default_par->mtrr.vram < 0) {
2039                        printk(KERN_ERR PFX "unable to setup MTRR\n");
2040                } else {
2041                        default_par->mtrr.vram_valid = 1;
2042                        /* let there be speed */
2043                        printk(KERN_INFO PFX "RIVA MTRR set to ON\n");
2044                }
2045        }
2046#endif /* CONFIG_MTRR */
2047
2048        info->fbops = &riva_fb_ops;
2049        info->fix = rivafb_fix;
2050        riva_get_EDID(info, pd);
2051        riva_get_edidinfo(info);
2052
2053        ret=riva_set_fbinfo(info);
2054        if (ret < 0) {
2055                printk(KERN_ERR PFX "error setting initial video mode\n");
2056                goto err_iounmap_screen_base;
2057        }
2058
2059        fb_destroy_modedb(info->monspecs.modedb);
2060        info->monspecs.modedb = NULL;
2061
2062        pci_set_drvdata(pd, info);
2063
2064        if (backlight)
2065                riva_bl_init(info->par);
2066
2067        ret = register_framebuffer(info);
2068        if (ret < 0) {
2069                printk(KERN_ERR PFX
2070                        "error registering riva framebuffer\n");
2071                goto err_iounmap_screen_base;
2072        }
2073
2074        printk(KERN_INFO PFX
2075                "PCI nVidia %s framebuffer ver %s (%dMB @ 0x%lX)\n",
2076                info->fix.id,
2077                RIVAFB_VERSION,
2078                info->fix.smem_len / (1024 * 1024),
2079                info->fix.smem_start);
2080
2081        NVTRACE_LEAVE();
2082        return 0;
2083
2084err_iounmap_screen_base:
2085#ifdef CONFIG_FB_RIVA_I2C
2086        riva_delete_i2c_busses(info->par);
2087#endif
2088        iounmap(info->screen_base);
2089err_iounmap_pramin:
2090        if (default_par->riva.Architecture == NV_ARCH_03) 
2091                iounmap(default_par->riva.PRAMIN);
2092err_iounmap_ctrl_base:
2093        iounmap(default_par->ctrl_base);
2094err_release_region:
2095        pci_release_regions(pd);
2096err_disable_device:
2097err_free_pixmap:
2098        kfree(info->pixmap.addr);
2099err_framebuffer_release:
2100        framebuffer_release(info);
2101err_ret:
2102        return ret;
2103}
2104
2105static void __devexit rivafb_remove(struct pci_dev *pd)
2106{
2107        struct fb_info *info = pci_get_drvdata(pd);
2108        struct riva_par *par = info->par;
2109        
2110        NVTRACE_ENTER();
2111
2112#ifdef CONFIG_FB_RIVA_I2C
2113        riva_delete_i2c_busses(par);
2114        kfree(par->EDID);
2115#endif
2116
2117        unregister_framebuffer(info);
2118
2119        riva_bl_exit(info);
2120
2121#ifdef CONFIG_MTRR
2122        if (par->mtrr.vram_valid)
2123                mtrr_del(par->mtrr.vram, info->fix.smem_start,
2124                         info->fix.smem_len);
2125#endif /* CONFIG_MTRR */
2126
2127        iounmap(par->ctrl_base);
2128        iounmap(info->screen_base);
2129        if (par->riva.Architecture == NV_ARCH_03)
2130                iounmap(par->riva.PRAMIN);
2131        pci_release_regions(pd);
2132        kfree(info->pixmap.addr);
2133        framebuffer_release(info);
2134        pci_set_drvdata(pd, NULL);
2135        NVTRACE_LEAVE();
2136}
2137
2138/* ------------------------------------------------------------------------- *
2139 *
2140 * initialization
2141 *
2142 * ------------------------------------------------------------------------- */
2143
2144#ifndef MODULE
2145static int __devinit rivafb_setup(char *options)
2146{
2147        char *this_opt;
2148
2149        NVTRACE_ENTER();
2150        if (!options || !*options)
2151                return 0;
2152
2153        while ((this_opt = strsep(&options, ",")) != NULL) {
2154                if (!strncmp(this_opt, "forceCRTC", 9)) {
2155                        char *p;
2156                        
2157                        p = this_opt + 9;
2158                        if (!*p || !*(++p)) continue; 
2159                        forceCRTC = *p - '0';
2160                        if (forceCRTC < 0 || forceCRTC > 1) 
2161                                forceCRTC = -1;
2162                } else if (!strncmp(this_opt, "flatpanel", 9)) {
2163                        flatpanel = 1;
2164                } else if (!strncmp(this_opt, "backlight:", 10)) {
2165                        backlight = simple_strtoul(this_opt+10, NULL, 0);
2166#ifdef CONFIG_MTRR
2167                } else if (!strncmp(this_opt, "nomtrr", 6)) {
2168                        nomtrr = 1;
2169#endif
2170                } else if (!strncmp(this_opt, "strictmode", 10)) {
2171                        strictmode = 1;
2172                } else if (!strncmp(this_opt, "noaccel", 7)) {
2173                        noaccel = 1;
2174                } else
2175                        mode_option = this_opt;
2176        }
2177        NVTRACE_LEAVE();
2178        return 0;
2179}
2180#endif /* !MODULE */
2181
2182static struct pci_driver rivafb_driver = {
2183        .name           = "rivafb",
2184        .id_table       = rivafb_pci_tbl,
2185        .probe          = rivafb_probe,
2186        .remove         = __devexit_p(rivafb_remove),
2187};
2188
2189
2190
2191/* ------------------------------------------------------------------------- *
2192 *
2193 * modularization
2194 *
2195 * ------------------------------------------------------------------------- */
2196
2197static int __devinit rivafb_init(void)
2198{
2199#ifndef MODULE
2200        char *option = NULL;
2201
2202        if (fb_get_options("rivafb", &option))
2203                return -ENODEV;
2204        rivafb_setup(option);
2205#endif
2206        return pci_register_driver(&rivafb_driver);
2207}
2208
2209
2210module_init(rivafb_init);
2211
2212static void __exit rivafb_exit(void)
2213{
2214        pci_unregister_driver(&rivafb_driver);
2215}
2216
2217module_exit(rivafb_exit);
2218
2219module_param(noaccel, bool, 0);
2220MODULE_PARM_DESC(noaccel, "bool: disable acceleration");
2221module_param(flatpanel, int, 0);
2222MODULE_PARM_DESC(flatpanel, "Enables experimental flat panel support for some chipsets. (0 or 1=enabled) (default=0)");
2223module_param(forceCRTC, int, 0);
2224MODULE_PARM_DESC(forceCRTC, "Forces usage of a particular CRTC in case autodetection fails. (0 or 1) (default=autodetect)");
2225#ifdef CONFIG_MTRR
2226module_param(nomtrr, bool, 0);
2227MODULE_PARM_DESC(nomtrr, "Disables MTRR support (0 or 1=disabled) (default=0)");
2228#endif
2229module_param(strictmode, bool, 0);
2230MODULE_PARM_DESC(strictmode, "Only use video modes from EDID");
2231
2232MODULE_AUTHOR("Ani Joshi, maintainer");
2233MODULE_DESCRIPTION("Framebuffer driver for nVidia Riva 128, TNT, TNT2, and the GeForce series");
2234MODULE_LICENSE("GPL");
2235