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