drivers/video/i810/i810_main.c

   1  /*-*- linux-c -*-
   2  *  linux/drivers/video/i810_main.c -- Intel 810 frame buffer device
   3  *
   4  *      Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
   5  *      All Rights Reserved
   6  *
   7  *      Contributors:
   8  *         Michael Vogt <mvogt@acm.org> - added support for Intel 815 chipsets
   9  *                                        and enabling the power-on state of
  10  *                                        external VGA connectors for
  11  *                                        secondary displays
  12  *
  13  *         Fredrik Andersson <krueger@shell.linux.se> - alpha testing of
  14  *                                        the VESA GTF
  15  *
  16  *         Brad Corrion <bcorrion@web-co.com> - alpha testing of customized
  17  *                                        timings support
  18  *
  19  *      The code framework is a modification of vfb.c by Geert Uytterhoeven.
  20  *      DotClock and PLL calculations are partly based on i810_driver.c
  21  *              in xfree86 v4.0.3 by Precision Insight.
  22  *      Watermark calculation and tables are based on i810_wmark.c
  23  *              in xfre86 v4.0.3 by Precision Insight.  Slight modifications
  24  *              only to allow for integer operations instead of floating point.
  25  *
  26  *  This file is subject to the terms and conditions of the GNU General Public
  27  *  License. See the file COPYING in the main directory of this archive for
  28  *  more details.
  29  */
  30
  31 #include <linux/module.h>
  32 #include <linux/config.h>
  33 #include <linux/kernel.h>
  34 #include <linux/errno.h>
  35 #include <linux/string.h>
  36 #include <linux/mm.h>
  37 #include <linux/tty.h>
  38 #include <linux/slab.h>
  39 #include <linux/fb.h>
  40 #include <linux/init.h>
  41 #include <linux/pci.h>
  42 #include <linux/pci_ids.h>
  43 #include <linux/resource.h>
  44 #include <linux/unistd.h>
  45
  46 #include <asm/io.h>
  47 #include <asm/div64.h>
  48
  49 #ifdef CONFIG_MTRR
  50 #include <asm/mtrr.h>
  51 #endif
  52
  53 #include <asm/page.h>
  54
  55 #include "i810_regs.h"
  56 #include "i810.h"
  57 #include "i810_main.h"
  58
  59 /* PCI */
  60 static const char *i810_pci_list[] __devinitdata = {
  61         "Intel(R) 810 Framebuffer Device"                                 ,
  62         "Intel(R) 810-DC100 Framebuffer Device"                           ,
  63         "Intel(R) 810E Framebuffer Device"                                ,
  64         "Intel(R) 815 (Internal Graphics 100Mhz FSB) Framebuffer Device"  ,
  65         "Intel(R) 815 (Internal Graphics only) Framebuffer Device"        ,
  66         "Intel(R) 815 (Internal Graphics with AGP) Framebuffer Device"
  67 };
  68
  69 static struct pci_device_id i810fb_pci_tbl[] = {
  70         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG1,
  71           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
  72         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3,
  73           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1  },
  74         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810E_IG,
  75           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
  76         /* mvo: added i815 PCI-ID */
  77         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_100,
  78           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
  79         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_NOAGP,
  80           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
  81         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC,
  82           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
  83         { 0 },
  84 };
  85
  86 static struct pci_driver i810fb_driver = {
  87         .name     =     "i810fb",
  88         .id_table =     i810fb_pci_tbl,
  89         .probe    =     i810fb_init_pci,
  90         .remove   =     __exit_p(i810fb_remove_pci),
  91         .suspend  =     i810fb_suspend,
  92         .resume   =     i810fb_resume,
  93 };
  94
  95 static int vram       __initdata = 4;
  96 static int bpp        __initdata = 8;
  97 static int mtrr       __initdata = 0;
  98 static int accel      __initdata = 0;
  99 static int hsync1     __initdata = 0;
 100 static int hsync2     __initdata = 0;
 101 static int vsync1     __initdata = 0;
 102 static int vsync2     __initdata = 0;
 103 static int xres       __initdata = 640;
 104 static int yres       __initdata = 480;
 105 static int vyres      __initdata = 0;
 106 static int sync       __initdata = 0;
 107 static int ext_vga    __initdata = 0;
 108 static int dcolor     __initdata = 0;
 109
 110 /*------------------------------------------------------------*/
 111
 112 /**************************************************************
 113  *                Hardware Low Level Routines                 *
 114  **************************************************************/
 115
 116 /**
 117  * i810_screen_off - turns off/on display
 118  * @mmio: address of register space
 119  * @mode: on or off
 120  *
 121  * DESCRIPTION:
 122  * Blanks/unblanks the display
 123  */
 124 static void i810_screen_off(u8 *mmio, u8 mode)
 125 {
 126         u32 count = WAIT_COUNT;
 127         u8 val;
 128
 129         i810_writeb(SR_INDEX, mmio, SR01);
 130         val = i810_readb(SR_DATA, mmio);
 131         val = (mode == OFF) ? val | SCR_OFF :
 132                 val & ~SCR_OFF;
 133
 134         while((i810_readw(DISP_SL, mmio) & 0xFFF) && count--);
 135         i810_writeb(SR_INDEX, mmio, SR01);
 136         i810_writeb(SR_DATA, mmio, val);
 137 }
 138
 139 /**
 140  * i810_dram_off - turns off/on dram refresh
 141  * @mmio: address of register space
 142  * @mode: on or off
 143  *
 144  * DESCRIPTION:
 145  * Turns off DRAM refresh.  Must be off for only 2 vsyncs
 146  * before data becomes corrupt
 147  */
 148 static void i810_dram_off(u8 *mmio, u8 mode)
 149 {
 150         u8 val;
 151
 152         val = i810_readb(DRAMCH, mmio);
 153         val &= DRAM_OFF;
 154         val = (mode == OFF) ? val : val | DRAM_ON;
 155         i810_writeb(DRAMCH, mmio, val);
 156 }
 157
 158 /**
 159  * i810_protect_regs - allows rw/ro mode of certain VGA registers
 160  * @mmio: address of register space
 161  * @mode: protect/unprotect
 162  *
 163  * DESCRIPTION:
 164  * The IBM VGA standard allows protection of certain VGA registers.
 165  * This will  protect or unprotect them.
 166  */
 167 static void i810_protect_regs(u8 *mmio, int mode)
 168 {
 169         u8 reg;
 170
 171         i810_writeb(CR_INDEX_CGA, mmio, CR11);
 172         reg = i810_readb(CR_DATA_CGA, mmio);
 173         reg = (mode == OFF) ? reg & ~0x80 :
 174                 reg | 0x80;
 175
 176         i810_writeb(CR_INDEX_CGA, mmio, CR11);
 177         i810_writeb(CR_DATA_CGA, mmio, reg);
 178 }
 179
 180 /**
 181  * i810_load_pll - loads values for the hardware PLL clock
 182  * @par: pointer to i810fb_par structure
 183  *
 184  * DESCRIPTION:
 185  * Loads the P, M, and N registers.
 186  */
 187 static void i810_load_pll(struct i810fb_par *par)
 188 {
 189         u32 tmp1, tmp2;
 190         u8 *mmio = par->mmio_start_virtual;
 191
 192         tmp1 = par->regs.M | par->regs.N << 16;
 193         tmp2 = i810_readl(DCLK_2D, mmio);
 194         tmp2 &= ~MN_MASK;
 195         i810_writel(DCLK_2D, mmio, tmp1 | tmp2);
 196
 197         tmp1 = par->regs.P;
 198         tmp2 = i810_readl(DCLK_0DS, mmio);
 199         tmp2 &= ~(P_OR << 16);
 200         i810_writel(DCLK_0DS, mmio, (tmp1 << 16) | tmp2);
 201
 202         i810_writeb(MSR_WRITE, mmio, par->regs.msr | 0xC8 | 1);
 203
 204 }
 205
 206 /**
 207  * i810_load_vga - load standard VGA registers
 208  * @par: pointer to i810fb_par structure
 209  *
 210  * DESCRIPTION:
 211  * Load values to VGA registers
 212  */
 213 static void i810_load_vga(struct i810fb_par *par)
 214 {
 215         u8 *mmio = par->mmio_start_virtual;
 216
 217         /* interlace */
 218         i810_writeb(CR_INDEX_CGA, mmio, CR70);
 219         i810_writeb(CR_DATA_CGA, mmio, par->interlace);
 220
 221         i810_writeb(CR_INDEX_CGA, mmio, CR00);
 222         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr00);
 223         i810_writeb(CR_INDEX_CGA, mmio, CR01);
 224         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr01);
 225         i810_writeb(CR_INDEX_CGA, mmio, CR02);
 226         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr02);
 227         i810_writeb(CR_INDEX_CGA, mmio, CR03);
 228         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr03);
 229         i810_writeb(CR_INDEX_CGA, mmio, CR04);
 230         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr04);
 231         i810_writeb(CR_INDEX_CGA, mmio, CR05);
 232         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr05);
 233         i810_writeb(CR_INDEX_CGA, mmio, CR06);
 234         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr06);
 235         i810_writeb(CR_INDEX_CGA, mmio, CR09);
 236         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr09);
 237         i810_writeb(CR_INDEX_CGA, mmio, CR10);
 238         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr10);
 239         i810_writeb(CR_INDEX_CGA, mmio, CR11);
 240         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr11);
 241         i810_writeb(CR_INDEX_CGA, mmio, CR12);
 242         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr12);
 243         i810_writeb(CR_INDEX_CGA, mmio, CR15);
 244         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr15);
 245         i810_writeb(CR_INDEX_CGA, mmio, CR16);
 246         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr16);
 247 }
 248
 249 /**
 250  * i810_load_vgax - load extended VGA registers
 251  * @par: pointer to i810fb_par structure
 252  *
 253  * DESCRIPTION:
 254  * Load values to extended VGA registers
 255  */
 256 static void i810_load_vgax(struct i810fb_par *par)
 257 {
 258         u8 *mmio = par->mmio_start_virtual;
 259
 260         i810_writeb(CR_INDEX_CGA, mmio, CR30);
 261         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr30);
 262         i810_writeb(CR_INDEX_CGA, mmio, CR31);
 263         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr31);
 264         i810_writeb(CR_INDEX_CGA, mmio, CR32);
 265         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr32);
 266         i810_writeb(CR_INDEX_CGA, mmio, CR33);
 267         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr33);
 268         i810_writeb(CR_INDEX_CGA, mmio, CR35);
 269         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr35);
 270         i810_writeb(CR_INDEX_CGA, mmio, CR39);
 271         i810_writeb(CR_DATA_CGA, mmio, par->regs.cr39);
 272 }
 273
 274 /**
 275  * i810_load_2d - load grahics registers
 276  * @par: pointer to i810fb_par structure
 277  *
 278  * DESCRIPTION:
 279  * Load values to graphics registers
 280  */
 281 static void i810_load_2d(struct i810fb_par *par)
 282 {
 283         u32 tmp;
 284         u8 tmp8, *mmio = par->mmio_start_virtual;
 285
 286         i810_writel(FW_BLC, mmio, par->watermark);
 287         tmp = i810_readl(PIXCONF, mmio);
 288         tmp |= 1 | 1 << 20;
 289         i810_writel(PIXCONF, mmio, tmp);
 290
 291         i810_writel(OVRACT, mmio, par->ovract);
 292
 293         i810_writeb(GR_INDEX, mmio, GR10);
 294         tmp8 = i810_readb(GR_DATA, mmio);
 295         tmp8 |= 2;
 296         i810_writeb(GR_INDEX, mmio, GR10);
 297         i810_writeb(GR_DATA, mmio, tmp8);
 298 }
 299
 300 /**
 301  * i810_hires - enables high resolution mode
 302  * @mmio: address of register space
 303  */
 304 static void i810_hires(u8 *mmio)
 305 {
 306         u8 val;
 307
 308         i810_writeb(CR_INDEX_CGA, mmio, CR80);
 309         val = i810_readb(CR_DATA_CGA, mmio);
 310         i810_writeb(CR_INDEX_CGA, mmio, CR80);
 311         i810_writeb(CR_DATA_CGA, mmio, val | 1);
 312 }
 313
 314 /**
 315  * i810_load_pitch - loads the characters per line of the display
 316  * @par: pointer to i810fb_par structure
 317  *
 318  * DESCRIPTION:
 319  * Loads the characters per line
 320  */
 321 static void i810_load_pitch(struct i810fb_par *par)
 322 {
 323         u32 tmp, pitch;
 324         u8 val, *mmio = par->mmio_start_virtual;
 325
 326         pitch = par->pitch >> 3;
 327         i810_writeb(SR_INDEX, mmio, SR01);
 328         val = i810_readb(SR_DATA, mmio);
 329         val &= 0xE0;
 330         val |= 1 | 1 << 2;
 331         i810_writeb(SR_INDEX, mmio, SR01);
 332         i810_writeb(SR_DATA, mmio, val);
 333
 334         tmp = pitch & 0xFF;
 335         i810_writeb(CR_INDEX_CGA, mmio, CR13);
 336         i810_writeb(CR_DATA_CGA, mmio, (u8) tmp);
 337
 338         tmp = pitch >> 8;
 339         i810_writeb(CR_INDEX_CGA, mmio, CR41);
 340         val = i810_readb(CR_DATA_CGA, mmio) & ~0x0F;
 341         i810_writeb(CR_INDEX_CGA, mmio, CR41);
 342         i810_writeb(CR_DATA_CGA, mmio, (u8) tmp | val);
 343 }
 344
 345 /**
 346  * i810_load_color - loads the color depth of the display
 347  * @par: pointer to i810fb_par structure
 348  *
 349  * DESCRIPTION:
 350  * Loads the color depth of the display and the graphics engine
 351  */
 352 static void i810_load_color(struct i810fb_par *par)
 353 {
 354         u8 *mmio = par->mmio_start_virtual;
 355         u32 reg1;
 356         u16 reg2;
 357         reg1 = i810_readl(PIXCONF, mmio) & ~(0xF0000 | 1 << 27);
 358         reg2 = i810_readw(BLTCNTL, mmio) & ~0x30;
 359
 360         reg1 |= 0x8000 | par->pixconf;
 361         reg2 |= par->bltcntl;
 362         i810_writel(PIXCONF, mmio, reg1);
 363         i810_writew(BLTCNTL, mmio, reg2);
 364 }
 365
 366 /**
 367  * i810_load_regs - loads all registers for the mode
 368  * @par: pointer to i810fb_par structure
 369  *
 370  * DESCRIPTION:
 371  * Loads registers
 372  */
 373 static void i810_load_regs(struct i810fb_par *par)
 374 {
 375         u8 *mmio = par->mmio_start_virtual;
 376
 377         i810_screen_off(mmio, OFF);
 378         i810_protect_regs(mmio, OFF);
 379         i810_dram_off(mmio, OFF);
 380         i810_load_pll(par);
 381         i810_load_vga(par);
 382         i810_load_vgax(par);
 383         i810_dram_off(mmio, ON);
 384         i810_load_2d(par);
 385         i810_hires(mmio);
 386         i810_screen_off(mmio, ON);
 387         i810_protect_regs(mmio, ON);
 388         i810_load_color(par);
 389         i810_load_pitch(par);
 390 }
 391
 392 static void i810_write_dac(u8 regno, u8 red, u8 green, u8 blue,
 393                           u8 *mmio)
 394 {
 395         i810_writeb(CLUT_INDEX_WRITE, mmio, regno);
 396         i810_writeb(CLUT_DATA, mmio, red);
 397         i810_writeb(CLUT_DATA, mmio, green);
 398         i810_writeb(CLUT_DATA, mmio, blue);
 399 }
 400
 401 static void i810_read_dac(u8 regno, u8 *red, u8 *green, u8 *blue,
 402                           u8 *mmio)
 403 {
 404         i810_writeb(CLUT_INDEX_READ, mmio, regno);
 405         *red = i810_readb(CLUT_DATA, mmio);
 406         *green = i810_readb(CLUT_DATA, mmio);
 407         *blue = i810_readb(CLUT_DATA, mmio);
 408 }
 409
 410 /************************************************************
 411  *                   VGA State Restore                      *
 412  ************************************************************/
 413 static void i810_restore_pll(struct i810fb_par *par)
 414 {
 415         u32 tmp1, tmp2;
 416         u8 *mmio = par->mmio_start_virtual;
 417
 418         tmp1 = par->hw_state.dclk_2d;
 419         tmp2 = i810_readl(DCLK_2D, mmio);
 420         tmp1 &= ~MN_MASK;
 421         tmp2 &= MN_MASK;
 422         i810_writel(DCLK_2D, mmio, tmp1 | tmp2);
 423
 424         tmp1 = par->hw_state.dclk_1d;
 425         tmp2 = i810_readl(DCLK_1D, mmio);
 426         tmp1 &= ~MN_MASK;
 427         tmp2 &= MN_MASK;
 428         i810_writel(DCLK_1D, mmio, tmp1 | tmp2);
 429
 430         i810_writel(DCLK_0DS, mmio, par->hw_state.dclk_0ds);
 431 }
 432
 433 static void i810_restore_dac(struct i810fb_par *par)
 434 {
 435         u32 tmp1, tmp2;
 436         u8 *mmio = par->mmio_start_virtual;
 437
 438         tmp1 = par->hw_state.pixconf;
 439         tmp2 = i810_readl(PIXCONF, mmio);
 440         tmp1 &= DAC_BIT;
 441         tmp2 &= ~DAC_BIT;
 442         i810_writel(PIXCONF, mmio, tmp1 | tmp2);
 443 }
 444
 445 static void i810_restore_vgax(struct i810fb_par *par)
 446 {
 447         u8 i, j, *mmio = par->mmio_start_virtual;
 448
 449         for (i = 0; i < 4; i++) {
 450                 i810_writeb(CR_INDEX_CGA, mmio, CR30+i);
 451                 i810_writeb(CR_DATA_CGA, mmio, *(&(par->hw_state.cr30) + i));
 452         }
 453         i810_writeb(CR_INDEX_CGA, mmio, CR35);
 454         i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr35);
 455         i810_writeb(CR_INDEX_CGA, mmio, CR39);
 456         i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr39);
 457         i810_writeb(CR_INDEX_CGA, mmio, CR41);
 458         i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr39);
 459
 460         /*restore interlace*/
 461         i810_writeb(CR_INDEX_CGA, mmio, CR70);
 462         i = par->hw_state.cr70;
 463         i &= INTERLACE_BIT;
 464         j = i810_readb(CR_DATA_CGA, mmio);
 465         i810_writeb(CR_INDEX_CGA, mmio, CR70);
 466         i810_writeb(CR_DATA_CGA, mmio, j | i);
 467
 468         i810_writeb(CR_INDEX_CGA, mmio, CR80);
 469         i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr80);
 470         i810_writeb(MSR_WRITE, mmio, par->hw_state.msr);
 471         i810_writeb(SR_INDEX, mmio, SR01);
 472         i = (par->hw_state.sr01) & ~0xE0 ;
 473         j = i810_readb(SR_DATA, mmio) & 0xE0;
 474         i810_writeb(SR_INDEX, mmio, SR01);
 475         i810_writeb(SR_DATA, mmio, i | j);
 476 }
 477
 478 static void i810_restore_vga(struct i810fb_par *par)
 479 {
 480         u8 i, *mmio = par->mmio_start_virtual;
 481
 482         for (i = 0; i < 10; i++) {
 483                 i810_writeb(CR_INDEX_CGA, mmio, CR00 + i);
 484                 i810_writeb(CR_DATA_CGA, mmio, *((&par->hw_state.cr00) + i));
 485         }
 486         for (i = 0; i < 8; i++) {
 487                 i810_writeb(CR_INDEX_CGA, mmio, CR10 + i);
 488                 i810_writeb(CR_DATA_CGA, mmio, *((&par->hw_state.cr10) + i));
 489         }
 490 }
 491
 492 static void i810_restore_addr_map(struct i810fb_par *par)
 493 {
 494         u8 tmp, *mmio = par->mmio_start_virtual;
 495
 496         i810_writeb(GR_INDEX, mmio, GR10);
 497         tmp = i810_readb(GR_DATA, mmio);
 498         tmp &= ADDR_MAP_MASK;
 499         tmp |= par->hw_state.gr10;
 500         i810_writeb(GR_INDEX, mmio, GR10);
 501         i810_writeb(GR_DATA, mmio, tmp);
 502 }
 503
 504 static void i810_restore_2d(struct i810fb_par *par)
 505 {
 506         u32 tmp_long;
 507         u16 tmp_word;
 508         u8 *mmio = par->mmio_start_virtual;
 509
 510         tmp_word = i810_readw(BLTCNTL, mmio);
 511         tmp_word &= ~(3 << 4);
 512         tmp_word |= par->hw_state.bltcntl;
 513         i810_writew(BLTCNTL, mmio, tmp_word);
 514
 515         i810_dram_off(mmio, OFF);
 516         i810_writel(PIXCONF, mmio, par->hw_state.pixconf);
 517         i810_dram_off(mmio, ON);
 518
 519         tmp_word = i810_readw(HWSTAM, mmio);
 520         tmp_word &= 3 << 13;
 521         tmp_word |= par->hw_state.hwstam;
 522         i810_writew(HWSTAM, mmio, tmp_word);
 523
 524         tmp_long = i810_readl(FW_BLC, mmio);
 525         tmp_long &= FW_BLC_MASK;
 526         tmp_long |= par->hw_state.fw_blc;
 527         i810_writel(FW_BLC, mmio, tmp_long);
 528
 529         i810_writel(HWS_PGA, mmio, par->hw_state.hws_pga);
 530         i810_writew(IER, mmio, par->hw_state.ier);
 531         i810_writew(IMR, mmio, par->hw_state.imr);
 532         i810_writel(DPLYSTAS, mmio, par->hw_state.dplystas);
 533 }
 534
 535 static void i810_restore_vga_state(struct i810fb_par *par)
 536 {
 537         u8 *mmio = par->mmio_start_virtual;
 538
 539         i810_screen_off(mmio, OFF);
 540         i810_protect_regs(mmio, OFF);
 541         i810_dram_off(mmio, OFF);
 542         i810_restore_pll(par);
 543         i810_restore_dac(par);
 544         i810_restore_vga(par);
 545         i810_restore_vgax(par);
 546         i810_restore_addr_map(par);
 547         i810_dram_off(mmio, ON);
 548         i810_restore_2d(par);
 549         i810_screen_off(mmio, ON);
 550         i810_protect_regs(mmio, ON);
 551 }
 552
 553 /***********************************************************************
 554  *                         VGA State Save                              *
 555  ***********************************************************************/
 556
 557 static void i810_save_vgax(struct i810fb_par *par)
 558 {
 559         u8 i, *mmio = par->mmio_start_virtual;
 560
 561         for (i = 0; i < 4; i++) {
 562                 i810_writeb(CR_INDEX_CGA, mmio, CR30 + i);
 563                 *(&(par->hw_state.cr30) + i) = i810_readb(CR_DATA_CGA, mmio);
 564         }
 565         i810_writeb(CR_INDEX_CGA, mmio, CR35);
 566         par->hw_state.cr35 = i810_readb(CR_DATA_CGA, mmio);
 567         i810_writeb(CR_INDEX_CGA, mmio, CR39);
 568         par->hw_state.cr39 = i810_readb(CR_DATA_CGA, mmio);
 569         i810_writeb(CR_INDEX_CGA, mmio, CR41);
 570         par->hw_state.cr41 = i810_readb(CR_DATA_CGA, mmio);
 571         i810_writeb(CR_INDEX_CGA, mmio, CR70);
 572         par->hw_state.cr70 = i810_readb(CR_DATA_CGA, mmio);
 573         par->hw_state.msr = i810_readb(MSR_READ, mmio);
 574         i810_writeb(CR_INDEX_CGA, mmio, CR80);
 575         par->hw_state.cr80 = i810_readb(CR_DATA_CGA, mmio);
 576         i810_writeb(SR_INDEX, mmio, SR01);
 577         par->hw_state.sr01 = i810_readb(SR_DATA, mmio);
 578 }
 579
 580 static void i810_save_vga(struct i810fb_par *par)
 581 {
 582         u8 i, *mmio = par->mmio_start_virtual;
 583
 584         for (i = 0; i < 10; i++) {
 585                 i810_writeb(CR_INDEX_CGA, mmio, CR00 + i);
 586                 *((&par->hw_state.cr00) + i) = i810_readb(CR_DATA_CGA, mmio);
 587         }
 588         for (i = 0; i < 8; i++) {
 589                 i810_writeb(CR_INDEX_CGA, mmio, CR10 + i);
 590                 *((&par->hw_state.cr10) + i) = i810_readb(CR_DATA_CGA, mmio);
 591         }
 592 }
 593
 594 static void i810_save_2d(struct i810fb_par *par)
 595 {
 596         u8 *mmio = par->mmio_start_virtual;
 597
 598         par->hw_state.dclk_2d = i810_readl(DCLK_2D, mmio);
 599         par->hw_state.dclk_1d = i810_readl(DCLK_1D, mmio);
 600         par->hw_state.dclk_0ds = i810_readl(DCLK_0DS, mmio);
 601         par->hw_state.pixconf = i810_readl(PIXCONF, mmio);
 602         par->hw_state.fw_blc = i810_readl(FW_BLC, mmio);
 603         par->hw_state.bltcntl = i810_readw(BLTCNTL, mmio);
 604         par->hw_state.hwstam = i810_readw(HWSTAM, mmio);
 605         par->hw_state.hws_pga = i810_readl(HWS_PGA, mmio);
 606         par->hw_state.ier = i810_readw(IER, mmio);
 607         par->hw_state.imr = i810_readw(IMR, mmio);
 608         par->hw_state.dplystas = i810_readl(DPLYSTAS, mmio);
 609 }
 610
 611 static void i810_save_vga_state(struct i810fb_par *par)
 612 {
 613         i810_save_vga(par);
 614         i810_save_vgax(par);
 615         i810_save_2d(par);
 616 }
 617
 618 /************************************************************
 619  *                    Helpers                               *
 620  ************************************************************/
 621 /**
 622  * get_line_length - calculates buffer pitch in bytes
 623  * @par: pointer to i810fb_par structure
 624  * @xres_virtual: virtual resolution of the frame
 625  * @bpp: bits per pixel
 626  *
 627  * DESCRIPTION:
 628  * Calculates buffer pitch in bytes.
 629  */
 630 u32 get_line_length(struct i810fb_par *par, int xres_virtual, int bpp)
 631 {
 632         u32 length;
 633
 634         length = xres_virtual*bpp;
 635         length = (length+31)&-32;
 636         length >>= 3;
 637         return length;
 638 }
 639
 640 /**
 641  * i810_calc_dclk - calculates the P, M, and N values of a pixelclock value
 642  * @freq: target pixelclock in picoseconds
 643  * @m: where to write M register
 644  * @n: where to write N register
 645  * @p: where to write P register
 646  *
 647  * DESCRIPTION:
 648  * Based on the formula Freq_actual = (4*M*Freq_ref)/(N^P)
 649  * Repeatedly computes the Freq until the actual Freq is equal to
 650  * the target Freq or until the loop count is zero.  In the latter
 651  * case, the actual frequency nearest the target will be used.
 652  */
 653 static void i810_calc_dclk(u32 freq, u32 *m, u32 *n, u32 *p)
 654 {
 655         u32 m_reg, n_reg, p_divisor, n_target_max;
 656         u32 m_target, n_target, p_target, n_best, m_best, mod;
 657         u32 f_out, target_freq, diff = 0, mod_min, diff_min;
 658
 659         diff_min = mod_min = 0xFFFFFFFF;
 660         n_best = m_best = m_target = f_out = 0;
 661
 662         target_freq =  freq;
 663         n_target_max = 30;
 664
 665         /*
 666          * find P such that target freq is 16x reference freq (Hz).
 667          */
 668         p_divisor = 1;
 669         p_target = 0;
 670         while(!((1000000 * p_divisor)/(16 * 24 * target_freq)) &&
 671               p_divisor <= 32) {
 672                 p_divisor <<= 1;
 673                 p_target++;
 674         }
 675
 676         n_reg = m_reg = n_target = 3;
 677         while (diff_min && mod_min && (n_target < n_target_max)) {
 678                 f_out = (p_divisor * n_reg * 1000000)/(4 * 24 * m_reg);
 679                 mod = (p_divisor * n_reg * 1000000) % (4 * 24 * m_reg);
 680                 m_target = m_reg;
 681                 n_target = n_reg;
 682                 if (f_out <= target_freq) {
 683                         n_reg++;
 684                         diff = target_freq - f_out;
 685                 } else {
 686                         m_reg++;
 687                         diff = f_out - target_freq;
 688                 }
 689
 690                 if (diff_min > diff) {
 691                         diff_min = diff;
 692                         n_best = n_target;
 693                         m_best = m_target;
 694                 }
 695
 696                 if (!diff && mod_min > mod) {
 697                         mod_min = mod;
 698                         n_best = n_target;
 699                         m_best = m_target;
 700                 }
 701         }
 702         if (m) *m = (m_best - 2) & 0x3FF;
 703         if (n) *n = (n_best - 2) & 0x3FF;
 704         if (p) *p = (p_target << 4);
 705 }
 706
 707 /*************************************************************
 708  *                Hardware Cursor Routines                   *
 709  *************************************************************/
 710
 711 /**
 712  * i810_enable_cursor - show or hide the hardware cursor
 713  * @mmio: address of register space
 714  * @mode: show (1) or hide (0)
 715  *
 716  * Description:
 717  * Shows or hides the hardware cursor
 718  */
 719 void i810_enable_cursor(u8 *mmio, int mode)
 720 {
 721         u32 temp;
 722
 723         temp = i810_readl(PIXCONF, mmio);
 724         temp = (mode == ON) ? temp | CURSOR_ENABLE_MASK :
 725                 temp & ~CURSOR_ENABLE_MASK;
 726
 727         i810_writel(PIXCONF, mmio, temp);
 728 }
 729
 730 static void i810_reset_cursor_image(struct i810fb_par *par)
 731 {
 732         u8 *addr = par->cursor_heap.virtual;
 733         int i, j;
 734
 735         for (i = 64; i--; ) {
 736                 for (j = 0; j < 8; j++) {
 737                         i810_writeb(j, addr, 0xff);
 738                         i810_writeb(j+8, addr, 0x00);
 739                 }
 740                 addr +=16;
 741         }
 742 }
 743
 744 static void i810_load_cursor_image(int width, int height, u8 *data,
 745                                    struct i810fb_par *par)
 746 {
 747         u8 *addr = par->cursor_heap.virtual;
 748         int i, j, w = width/8;
 749         int mod = width % 8, t_mask, d_mask;
 750
 751         t_mask = 0xff >> mod;
 752         d_mask = ~(0xff >> mod);
 753         for (i = height; i--; ) {
 754                 for (j = 0; j < w; j++) {
 755                         i810_writeb(j+0, addr, 0x00);
 756                         i810_writeb(j+8, addr, *data++);
 757                 }
 758                 if (mod) {
 759                         i810_writeb(j+0, addr, t_mask);
 760                         i810_writeb(j+8, addr, *data++ & d_mask);
 761                 }
 762                 addr += 16;
 763         }
 764 }
 765
 766 static void i810_load_cursor_colors(int fg, int bg, struct fb_info *info)
 767 {
 768         struct i810fb_par *par = (struct i810fb_par *) info->par;
 769         u8 *mmio = par->mmio_start_virtual, temp;
 770         u8 red, green, blue, trans;
 771
 772         i810fb_getcolreg(bg, &red, &green, &blue, &trans, info);
 773
 774         temp = i810_readb(PIXCONF1, mmio);
 775         i810_writeb(PIXCONF1, mmio, temp | EXTENDED_PALETTE);
 776
 777         i810_write_dac(4, red, green, blue, mmio);
 778
 779         i810_writeb(PIXCONF1, mmio, temp);
 780
 781         i810fb_getcolreg(fg, &red, &green, &blue, &trans, info);
 782         temp = i810_readb(PIXCONF1, mmio);
 783         i810_writeb(PIXCONF1, mmio, temp | EXTENDED_PALETTE);
 784
 785         i810_write_dac(5, red, green, blue, mmio);
 786
 787         i810_writeb(PIXCONF1, mmio, temp);
 788 }
 789
 790 /**
 791  * i810_init_cursor - initializes the cursor
 792  * @par: pointer to i810fb_par structure
 793  *
 794  * DESCRIPTION:
 795  * Initializes the cursor registers
 796  */
 797 static void i810_init_cursor(struct i810fb_par *par)
 798 {
 799         u8 *mmio = par->mmio_start_virtual;
 800
 801         i810_enable_cursor(mmio, OFF);
 802         i810_writel(CURBASE, mmio, par->cursor_heap.physical);
 803         i810_writew(CURCNTR, mmio, COORD_ACTIVE | CURSOR_MODE_64_XOR);
 804 }
 805
 806 /*********************************************************************
 807  *                    Framebuffer hook helpers                       *
 808  *********************************************************************/
 809 /**
 810  * i810_round_off -  Round off values to capability of hardware
 811  * @var: pointer to fb_var_screeninfo structure
 812  *
 813  * DESCRIPTION:
 814  * @var contains user-defined information for the mode to be set.
 815  * This will try modify those values to ones nearest the
 816  * capability of the hardware
 817  */
 818 static void i810_round_off(struct fb_var_screeninfo *var)
 819 {
 820         u32 xres, yres, vxres, vyres;
 821
 822         /*
 823          *  Presently supports only these configurations
 824          */
 825
 826         xres = var->xres;
 827         yres = var->yres;
 828         vxres = var->xres_virtual;
 829         vyres = var->yres_virtual;
 830
 831         var->bits_per_pixel += 7;
 832         var->bits_per_pixel &= ~7;
 833
 834         if (var->bits_per_pixel < 8)
 835                 var->bits_per_pixel = 8;
 836         if (var->bits_per_pixel > 32)
 837                 var->bits_per_pixel = 32;
 838
 839         round_off_xres(&xres);
 840         if (xres < 40)
 841                 xres = 40;
 842         if (xres > 2048)
 843                 xres = 2048;
 844         xres = (xres + 7) & ~7;
 845
 846         if (vxres < xres)
 847                 vxres = xres;
 848
 849         round_off_yres(&xres, &yres);
 850         if (yres < 1)
 851                 yres = 1;
 852         if (yres >= 2048)
 853                 yres = 2048;
 854
 855         if (vyres < yres)
 856                 vyres = yres;
 857
 858         if (var->bits_per_pixel == 32)
 859                 var->accel_flags = 0;
 860
 861         /* round of horizontal timings to nearest 8 pixels */
 862         var->left_margin = (var->left_margin + 4) & ~7;
 863         var->right_margin = (var->right_margin + 4) & ~7;
 864         var->hsync_len = (var->hsync_len + 4) & ~7;
 865
 866         if (var->vmode & FB_VMODE_INTERLACED) {
 867                 if (!((yres + var->upper_margin + var->vsync_len +
 868                        var->lower_margin) & 1))
 869                         var->upper_margin++;
 870         }
 871
 872         var->xres = xres;
 873         var->yres = yres;
 874         var->xres_virtual = vxres;
 875         var->yres_virtual = vyres;
 876 }
 877
 878 /**
 879  * set_color_bitfields - sets rgba fields
 880  * @var: pointer to fb_var_screeninfo
 881  *
 882  * DESCRIPTION:
 883  * The length, offset and ordering  for each color field
 884  * (red, green, blue)  will be set as specified
 885  * by the hardware
 886  */
 887 static void set_color_bitfields(struct fb_var_screeninfo *var)
 888 {
 889         switch (var->bits_per_pixel) {
 890         case 8:
 891                 var->red.offset = 0;
 892                 var->red.length = 8;
 893                 var->green.offset = 0;
 894                 var->green.length = 8;
 895                 var->blue.offset = 0;
 896                 var->blue.length = 8;
 897                 var->transp.offset = 0;
 898                 var->transp.length = 0;
 899                 break;
 900         case 16:
 901                 var->green.length = (var->green.length == 5) ? 5 : 6;
 902                 var->red.length = 5;
 903                 var->blue.length = 5;
 904                 var->transp.length = 6 - var->green.length;
 905                 var->blue.offset = 0;
 906                 var->green.offset = 5;
 907                 var->red.offset = 5 + var->green.length;
 908                 var->transp.offset =  (5 + var->red.offset) & 15;
 909                 break;
 910         case 24:        /* RGB 888   */
 911         case 32:        /* RGBA 8888 */
 912                 var->red.offset = 16;
 913                 var->red.length = 8;
 914                 var->green.offset = 8;
 915                 var->green.length = 8;
 916                 var->blue.offset = 0;
 917                 var->blue.length = 8;
 918                 var->transp.length = var->bits_per_pixel - 24;
 919                 var->transp.offset = (var->transp.length) ? 24 : 0;
 920                 break;
 921         }
 922         var->red.msb_right = 0;
 923         var->green.msb_right = 0;
 924         var->blue.msb_right = 0;
 925         var->transp.msb_right = 0;
 926 }
 927
 928 /**
 929  * i810_check_params - check if contents in var are valid
 930  * @var: pointer to fb_var_screeninfo
 931  * @info: pointer to fb_info
 932  *
 933  * DESCRIPTION:
 934  * This will check if the framebuffer size is sufficient
 935  * for the current mode and if the user's monitor has the
 936  * required specifications to display the current mode.
 937  */
 938 static int i810_check_params(struct fb_var_screeninfo *var,
 939                              struct fb_info *info)
 940 {
 941         struct i810fb_par *par = (struct i810fb_par *) info->par;
 942         int line_length, vidmem;
 943         u32 xres, yres, vxres, vyres;
 944
 945         xres = var->xres;
 946         yres = var->yres;
 947         vxres = var->xres_virtual;
 948         vyres = var->yres_virtual;
 949
 950         /*
 951          *  Memory limit
 952          */
 953         line_length = get_line_length(par, vxres,
 954                                       var->bits_per_pixel);
 955
 956         vidmem = line_length*vyres;
 957         if (vidmem > par->fb.size) {
 958                 vyres = par->fb.size/line_length;
 959                 if (vyres < yres) {
 960                         vyres = yres;
 961                         vxres = par->fb.size/vyres;
 962                         vxres /= var->bits_per_pixel >> 3;
 963                         line_length = get_line_length(par, vxres,
 964                                                       var->bits_per_pixel);
 965                         vidmem = line_length * yres;
 966                         if (vxres < xres) {
 967                                 printk("i810fb: required video memory, "
 968                                        "%d bytes, for %dx%d-%d (virtual) "
 969                                        "is out of range\n",
 970                                        vidmem, vxres, vyres,
 971                                        var->bits_per_pixel);
 972                                 return -ENOMEM;
 973                         }
 974                 }
 975         }
 976         /*
 977          * Monitor limit
 978          */
 979         switch (var->bits_per_pixel) {
 980         case 8:
 981                 info->monspecs.dclkmax = 234000000;
 982                 break;
 983         case 16:
 984                 info->monspecs.dclkmax = 229000000;
 985                 break;
 986         case 24:
 987         case 32:
 988                 info->monspecs.dclkmax = 204000000;
 989                 break;
 990         }
 991         info->monspecs.dclkmin = 15000000;
 992
 993         if (fb_validate_mode(var, info)) {
 994                 if (fb_get_mode(FB_MAXTIMINGS, 0, var, info))
 995                         return -EINVAL;
 996         }
 997
 998         var->xres = xres;
 999         var->yres = yres;
1000         var->xres_virtual = vxres;
1001         var->yres_virtual = vyres;
1002         return 0;
1003 }
1004
1005 /**
1006  * encode_fix - fill up fb_fix_screeninfo structure
1007  * @fix: pointer to fb_fix_screeninfo
1008  * @info: pointer to fb_info
1009  *
1010  * DESCRIPTION:
1011  * This will set up parameters that are unmodifiable by the user.
1012  */
1013 static int encode_fix(struct fb_fix_screeninfo *fix, struct fb_info *info)
1014 {
1015         struct i810fb_par *par = (struct i810fb_par *) info->par;
1016
1017         memset(fix, 0, sizeof(struct fb_fix_screeninfo));
1018
1019         strcpy(fix->id, "I810");
1020         fix->smem_start = par->fb.physical;
1021         fix->smem_len = par->fb.size;
1022         fix->type = FB_TYPE_PACKED_PIXELS;
1023         fix->type_aux = 0;
1024         fix->xpanstep = 8;
1025         fix->ypanstep = 1;
1026
1027         switch (info->var.bits_per_pixel) {
1028         case 8:
1029                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
1030                 break;
1031         case 16:
1032         case 24:
1033         case 32:
1034                 if (info->var.nonstd)
1035                         fix->visual = FB_VISUAL_DIRECTCOLOR;
1036                 else
1037                         fix->visual = FB_VISUAL_TRUECOLOR;
1038                 break;
1039         default:
1040                 return -EINVAL;
1041         }
1042         fix->ywrapstep = 0;
1043         fix->line_length = par->pitch;
1044         fix->mmio_start = par->mmio_start_phys;
1045         fix->mmio_len = MMIO_SIZE;
1046         fix->accel = FB_ACCEL_I810;
1047
1048         return 0;
1049 }
1050
1051 /**
1052  * decode_var - modify par according to contents of var
1053  * @var: pointer to fb_var_screeninfo
1054  * @par: pointer to i810fb_par
1055  *
1056  * DESCRIPTION:
1057  * Based on the contents of @var, @par will be dynamically filled up.
1058  * @par contains all information necessary to modify the hardware.
1059 */
1060 static void decode_var(const struct fb_var_screeninfo *var,
1061                        struct i810fb_par *par)
1062 {
1063         u32 xres, yres, vxres, vyres;
1064
1065         xres = var->xres;
1066         yres = var->yres;
1067         vxres = var->xres_virtual;
1068         vyres = var->yres_virtual;
1069
1070         switch (var->bits_per_pixel) {
1071         case 8:
1072                 par->pixconf = PIXCONF8;
1073                 par->bltcntl = 0;
1074                 par->depth = 1;
1075                 par->blit_bpp = BPP8;
1076                 break;
1077         case 16:
1078                 if (var->green.length == 5)
1079                         par->pixconf = PIXCONF15;
1080                 else
1081                         par->pixconf = PIXCONF16;
1082                 par->bltcntl = 16;
1083                 par->depth = 2;
1084                 par->blit_bpp = BPP16;
1085                 break;
1086         case 24:
1087                 par->pixconf = PIXCONF24;
1088                 par->bltcntl = 32;
1089                 par->depth = 3;
1090                 par->blit_bpp = BPP24;
1091                 break;
1092         case 32:
1093                 par->pixconf = PIXCONF32;
1094                 par->bltcntl = 0;
1095                 par->depth = 4;
1096                 par->blit_bpp = 3 << 24;
1097                 break;
1098         }
1099         if (var->nonstd && var->bits_per_pixel != 8)
1100                 par->pixconf |= 1 << 27;
1101
1102         i810_calc_dclk(var->pixclock, &par->regs.M,
1103                        &par->regs.N, &par->regs.P);
1104         i810fb_encode_registers(var, par, xres, yres);
1105
1106         par->watermark = i810_get_watermark(var, par);
1107         par->pitch = get_line_length(par, vxres, var->bits_per_pixel);
1108 }
1109
1110 /**
1111  * i810fb_getcolreg - gets red, green and blue values of the hardware DAC
1112  * @regno: DAC index
1113  * @red: red
1114  * @green: green
1115  * @blue: blue
1116  * @transp: transparency (alpha)
1117  * @info: pointer to fb_info
1118  *
1119  * DESCRIPTION:
1120  * Gets the red, green and blue values of the hardware DAC as pointed by @regno
1121  * and writes them to @red, @green and @blue respectively
1122  */
1123 static int i810fb_getcolreg(u8 regno, u8 *red, u8 *green, u8 *blue,
1124                             u8 *transp, struct fb_info *info)
1125 {
1126         struct i810fb_par *par = (struct i810fb_par *) info->par;
1127         u8 *mmio = par->mmio_start_virtual, temp;
1128
1129         if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
1130                 if ((info->var.green.length == 5 && regno > 31) ||
1131                     (info->var.green.length == 6 && regno > 63))
1132                         return 1;
1133         }
1134
1135         temp = i810_readb(PIXCONF1, mmio);
1136         i810_writeb(PIXCONF1, mmio, temp & ~EXTENDED_PALETTE);
1137
1138         if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
1139             info->var.green.length == 5)
1140                 i810_read_dac(regno * 8, red, green, blue, mmio);
1141
1142         else if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
1143                  info->var.green.length == 6) {
1144                 u8 tmp;
1145
1146                 i810_read_dac(regno * 8, red, &tmp, blue, mmio);
1147                 i810_read_dac(regno * 4, &tmp, green, &tmp, mmio);
1148         }
1149         else
1150                 i810_read_dac(regno, red, green, blue, mmio);
1151
1152         *transp = 0;
1153         i810_writeb(PIXCONF1, mmio, temp);
1154
1155         return 0;
1156 }
1157
1158 /******************************************************************
1159  *           Framebuffer device-specific hooks                    *
1160  ******************************************************************/
1161
1162 static int i810fb_open(struct fb_info *info, int user)
1163 {
1164         struct i810fb_par *par = (struct i810fb_par *) info->par;
1165         u32 count = atomic_read(&par->use_count);
1166
1167         if (count == 0) {
1168                 memset(&par->state, 0, sizeof(struct vgastate));
1169                 par->state.flags = VGA_SAVE_CMAP;
1170                 par->state.vgabase = (caddr_t) par->mmio_start_virtual;
1171                 save_vga(&par->state);
1172
1173                 i810_save_vga_state(par);
1174         }
1175
1176         atomic_inc(&par->use_count);
1177
1178         return 0;
1179 }
1180
1181 static int i810fb_release(struct fb_info *info, int user)
1182 {
1183         struct i810fb_par *par = (struct i810fb_par *) info->par;
1184         u32 count;
1185
1186         count = atomic_read(&par->use_count);
1187         if (count == 0)
1188                 return -EINVAL;
1189
1190         if (count == 1) {
1191                 i810_restore_vga_state(par);
1192                 restore_vga(&par->state);
1193         }
1194
1195         atomic_dec(&par->use_count);
1196
1197         return 0;
1198 }
1199
1200
1201 static int i810fb_setcolreg(unsigned regno, unsigned red, unsigned green,
1202                             unsigned blue, unsigned transp,
1203                             struct fb_info *info)
1204 {
1205         struct i810fb_par *par = (struct i810fb_par *) info->par;
1206         u8 *mmio = par->mmio_start_virtual, temp;
1207         int i;
1208
1209         if (regno > 255) return 1;
1210
1211         if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
1212                 if ((info->var.green.length == 5 && regno > 31) ||
1213                     (info->var.green.length == 6 && regno > 63))
1214                         return 1;
1215         }
1216
1217         if (info->var.grayscale)
1218                 red = green = blue = (19595 * red + 38470 * green +
1219                                       7471 * blue) >> 16;
1220
1221         temp = i810_readb(PIXCONF1, mmio);
1222         i810_writeb(PIXCONF1, mmio, temp & ~EXTENDED_PALETTE);
1223
1224         if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
1225             info->var.green.length == 5) {
1226                 for (i = 0; i < 8; i++)
1227                         i810_write_dac((u8) (regno * 8) + i, (u8) red,
1228                                        (u8) green, (u8) blue, mmio);
1229         } else if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
1230                  info->var.green.length == 6) {
1231                 u8 r, g, b;
1232
1233                 if (regno < 32) {
1234                         for (i = 0; i < 8; i++)
1235                                 i810_write_dac((u8) (regno * 8) + i,
1236                                                (u8) red, (u8) green,
1237                                                (u8) blue, mmio);
1238                 }
1239                 i810_read_dac((u8) (regno*4), &r, &g, &b, mmio);
1240                 for (i = 0; i < 4; i++)
1241                         i810_write_dac((u8) (regno*4) + i, r, (u8) green,
1242                                        b, mmio);
1243         } else if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
1244                 i810_write_dac((u8) regno, (u8) red, (u8) green,
1245                                (u8) blue, mmio);
1246         }
1247
1248         i810_writeb(PIXCONF1, mmio, temp);
1249
1250         if (regno < 16) {
1251                 switch (info->var.bits_per_pixel) {
1252                 case 16:
1253                         if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
1254                                 if (info->var.green.length == 5)
1255                                         ((u32 *)info->pseudo_palette)[regno] =
1256                                                 (regno << 10) | (regno << 5) |
1257                                                 regno;
1258                                 else
1259                                         ((u32 *)info->pseudo_palette)[regno] =
1260                                                 (regno << 11) | (regno << 5) |
1261                                                 regno;
1262                         } else {
1263                                 if (info->var.green.length == 5) {
1264                                         /* RGB 555 */
1265                                         ((u32 *)info->pseudo_palette)[regno] =
1266                                                 ((red & 0xf800) >> 1) |
1267                                                 ((green & 0xf800) >> 6) |
1268                                                 ((blue & 0xf800) >> 11);
1269                                 } else {
1270                                         /* RGB 565 */
1271                                         ((u32 *)info->pseudo_palette)[regno] =
1272                                                 (red & 0xf800) |
1273                                                 ((green & 0xf800) >> 5) |
1274                                                 ((blue & 0xf800) >> 11);
1275                                 }
1276                         }
1277                         break;
1278                 case 24:        /* RGB 888 */
1279                 case 32:        /* RGBA 8888 */
1280                         if (info->fix.visual == FB_VISUAL_DIRECTCOLOR)
1281                                 ((u32 *)info->pseudo_palette)[regno] =
1282                                         (regno << 16) | (regno << 8) |
1283                                         regno;
1284                         else
1285                                 ((u32 *)info->pseudo_palette)[regno] =
1286                                         ((red & 0xff00) << 8) |
1287                                         (green & 0xff00) |
1288                                         ((blue & 0xff00) >> 8);
1289                         break;
1290                 }
1291         }
1292         return 0;
1293 }
1294
1295 static int i810fb_pan_display(struct fb_var_screeninfo *var,
1296                               struct fb_info *info)
1297 {
1298         struct i810fb_par *par = (struct i810fb_par *) info->par;
1299         u32 total;
1300
1301         total = var->xoffset * par->depth +
1302                 var->yoffset * info->fix.line_length;
1303         i810fb_load_front(total, info);
1304
1305         return 0;
1306 }
1307
1308 static int i810fb_blank (int blank_mode, struct fb_info *info)
1309 {
1310         struct i810fb_par *par = (struct i810fb_par *) info->par;
1311         u8 *mmio = par->mmio_start_virtual;
1312         int mode = 0, pwr, scr_off = 0;
1313
1314         pwr = i810_readl(PWR_CLKC, mmio);
1315
1316         switch(blank_mode) {
1317         case VESA_NO_BLANKING:
1318                 mode = POWERON;
1319                 pwr |= 1;
1320                 scr_off = ON;
1321                 break;
1322         case VESA_VSYNC_SUSPEND:
1323                 mode = STANDBY;
1324                 pwr |= 1;
1325                 scr_off = OFF;
1326                 break;
1327         case VESA_HSYNC_SUSPEND:
1328                 mode = SUSPEND;
1329                 pwr |= 1;
1330                 scr_off = OFF;
1331                 break;
1332         case VESA_POWERDOWN:
1333                 mode = POWERDOWN;
1334                 pwr &= ~1;
1335                 scr_off = OFF;
1336                 break;
1337         default:
1338                 return -EINVAL;
1339         }
1340         i810_screen_off(mmio, scr_off);
1341         i810_writel(HVSYNC, mmio, mode);
1342         i810_writel(PWR_CLKC, mmio, pwr);
1343         return 0;
1344 }
1345
1346 static int i810fb_set_par(struct fb_info *info)
1347 {
1348         struct i810fb_par *par = (struct i810fb_par *) info->par;
1349
1350         decode_var(&info->var, par);
1351         i810_load_regs(par);
1352         i810_init_cursor(par);
1353
1354         encode_fix(&info->fix, info);
1355
1356         if (info->var.accel_flags && !(par->dev_flags & LOCKUP))
1357                 info->pixmap.scan_align = 2;
1358         else
1359                 info->pixmap.scan_align = 1;
1360
1361         return 0;
1362 }
1363
1364 static int i810fb_check_var(struct fb_var_screeninfo *var,
1365                             struct fb_info *info)
1366 {
1367         int err;
1368
1369         if (IS_DVT) {
1370                 var->vmode &= ~FB_VMODE_MASK;
1371                 var->vmode |= FB_VMODE_NONINTERLACED;
1372         }
1373         if (var->vmode & FB_VMODE_DOUBLE) {
1374                 var->vmode &= ~FB_VMODE_MASK;
1375                 var->vmode |= FB_VMODE_NONINTERLACED;
1376         }
1377
1378         i810_round_off(var);
1379         if ((err = i810_check_params(var, info)))
1380                 return err;
1381
1382         i810fb_fill_var_timings(var);
1383         set_color_bitfields(var);
1384         return 0;
1385 }
1386
1387 static int i810fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1388 {
1389         struct i810fb_par *par = (struct i810fb_par *)info->par;
1390         u8 *mmio = par->mmio_start_virtual;
1391         u8 data[64 * 8];
1392
1393         if (!info->var.accel_flags || par->dev_flags & LOCKUP)
1394                 return soft_cursor(info, cursor);
1395
1396         if (cursor->image.width > 64 || cursor->image.height > 64)
1397                 return -ENXIO;
1398
1399         if ((i810_readl(CURBASE, mmio) & 0xf) != par->cursor_heap.physical)
1400                 i810_init_cursor(par);
1401
1402         i810_enable_cursor(mmio, OFF);
1403
1404         if (cursor->set & FB_CUR_SETHOT)
1405                 info->cursor.hot = cursor->hot;
1406
1407         if (cursor->set & FB_CUR_SETPOS) {
1408                 u32 tmp;
1409
1410                 info->cursor.image.dx = cursor->image.dx;
1411                 info->cursor.image.dy = cursor->image.dy;
1412
1413                 tmp = cursor->image.dx - info->var.xoffset;
1414                 tmp |= (cursor->image.dy - info->var.yoffset) << 16;
1415
1416                 i810_writel(CURPOS, mmio, tmp);
1417         }
1418
1419         if (cursor->set & FB_CUR_SETSIZE) {
1420                 info->cursor.image.height = cursor->image.height;
1421                 info->cursor.image.width = cursor->image.width;
1422                 i810_reset_cursor_image(par);
1423         }
1424
1425         if (cursor->set & FB_CUR_SETCMAP) {
1426                 info->cursor.image.fg_color = cursor->image.fg_color;
1427                 info->cursor.image.bg_color = cursor->image.bg_color;
1428                 i810_load_cursor_colors(cursor->image.fg_color,
1429                                         cursor->image.bg_color,
1430                                         info);
1431         }
1432
1433         if (cursor->set & FB_CUR_SETSHAPE) {
1434                 int size = ((info->cursor.image.width + 7) >> 3) *
1435                              info->cursor.image.height;
1436                 int i;
1437
1438                 switch (info->cursor.rop) {
1439                 case ROP_XOR:
1440                         for (i = 0; i < size; i++)
1441                                 data[i] = cursor->image.data[i] ^ info->cursor.mask[i];
1442                         break;
1443                 case ROP_COPY:
1444                 default:
1445                         for (i = 0; i < size; i++)
1446                                 data[i] = cursor->image.data[i] & info->cursor.mask[i];
1447                         break;
1448                 }
1449                 i810_load_cursor_image(info->cursor.image.width,
1450                                        info->cursor.image.height, data,
1451                                        par);
1452         }
1453
1454         if (info->cursor.enable)
1455                 i810_enable_cursor(mmio, ON);
1456         return 0;
1457 }
1458
1459 static struct fb_ops i810fb_ops __devinitdata = {
1460         .owner =             THIS_MODULE,
1461         .fb_open =           i810fb_open,
1462         .fb_release =        i810fb_release,
1463         .fb_check_var =      i810fb_check_var,
1464         .fb_set_par =        i810fb_set_par,
1465         .fb_setcolreg =      i810fb_setcolreg,
1466         .fb_blank =          i810fb_blank,
1467         .fb_pan_display =    i810fb_pan_display,
1468         .fb_fillrect =       i810fb_fillrect,
1469         .fb_copyarea =       i810fb_copyarea,
1470         .fb_imageblit =      i810fb_imageblit,
1471         .fb_cursor =         i810fb_cursor,
1472         .fb_sync =           i810fb_sync,
1473 };
1474
1475 /***********************************************************************
1476  *                         Power Management                            *
1477  ***********************************************************************/
1478 static int i810fb_suspend(struct pci_dev *dev, u32 state)
1479 {
1480         struct fb_info *info = pci_get_drvdata(dev);
1481         struct i810fb_par *par = (struct i810fb_par *) info->par;
1482         int blank = 0, prev_state = par->cur_state;
1483
1484         if (state == prev_state)
1485                 return 0;
1486
1487         par->cur_state = state;
1488
1489         switch (state) {
1490         case 1:
1491                 blank = VESA_VSYNC_SUSPEND;
1492                 break;
1493         case 2:
1494                 blank = VESA_HSYNC_SUSPEND;
1495                 break;
1496         case 3:
1497                 blank = VESA_POWERDOWN;
1498                 break;
1499         default:
1500                 return -EINVAL;
1501         }
1502         info->fbops->fb_blank(blank, info);
1503
1504         if (!prev_state) {
1505                 par->drm_agp->unbind_memory(par->i810_gtt.i810_fb_memory);
1506                 par->drm_agp->unbind_memory(par->i810_gtt.i810_cursor_memory);
1507                 pci_disable_device(dev);
1508         }
1509         pci_save_state(dev, par->pci_state);
1510         pci_set_power_state(dev, state);
1511
1512         return 0;
1513 }
1514
1515 static int i810fb_resume(struct pci_dev *dev)
1516 {
1517         struct fb_info *info = pci_get_drvdata(dev);
1518         struct i810fb_par *par = (struct i810fb_par *) info->par;
1519
1520         if (par->cur_state == 0)
1521                 return 0;
1522
1523         pci_restore_state(dev, par->pci_state);
1524         pci_set_power_state(dev, 0);
1525         pci_enable_device(dev);
1526         par->drm_agp->bind_memory(par->i810_gtt.i810_fb_memory,
1527                                   par->fb.offset);
1528         par->drm_agp->bind_memory(par->i810_gtt.i810_cursor_memory,
1529                                   par->cursor_heap.offset);
1530
1531         info->fbops->fb_blank(VESA_NO_BLANKING, info);
1532
1533         par->cur_state = 0;
1534
1535         return 0;
1536 }
1537 /***********************************************************************
1538  *                  AGP resource allocation                            *
1539  ***********************************************************************/
1540
1541 static void __devinit i810_fix_pointers(struct i810fb_par *par)
1542 {
1543         par->fb.physical = par->aperture.physical+(par->fb.offset << 12);
1544         par->fb.virtual = par->aperture.virtual+(par->fb.offset << 12);
1545         par->iring.physical = par->aperture.physical +
1546                 (par->iring.offset << 12);
1547         par->iring.virtual = par->aperture.virtual +
1548                 (par->iring.offset << 12);
1549         par->cursor_heap.virtual = par->aperture.virtual+
1550                 (par->cursor_heap.offset << 12);
1551 }
1552
1553 static void __devinit i810_fix_offsets(struct i810fb_par *par)
1554 {
1555         if (vram + 1 > par->aperture.size >> 20)
1556                 vram = (par->aperture.size >> 20) - 1;
1557         if (v_offset_default > (par->aperture.size >> 20))
1558                 v_offset_default = (par->aperture.size >> 20);
1559         if (vram + v_offset_default + 1 > par->aperture.size >> 20)
1560                 v_offset_default = (par->aperture.size >> 20) - (vram + 1);
1561
1562         par->fb.size = vram << 20;
1563         par->fb.offset = v_offset_default << 20;
1564         par->fb.offset >>= 12;
1565
1566         par->iring.offset = par->fb.offset + (par->fb.size >> 12);
1567         par->iring.size = RINGBUFFER_SIZE;
1568
1569         par->cursor_heap.offset = par->iring.offset + (RINGBUFFER_SIZE >> 12);
1570         par->cursor_heap.size = 4096;
1571 }
1572
1573 static int __devinit i810_alloc_agp_mem(struct fb_info *info)
1574 {
1575         struct i810fb_par *par = (struct i810fb_par *) info->par;
1576         int size;
1577
1578         i810_fix_offsets(par);
1579         size = par->fb.size + par->iring.size;
1580
1581         par->drm_agp = (drm_agp_t *) inter_module_get("drm_agp");
1582         if (!par->drm_agp) {
1583                 printk("i810fb: cannot acquire agp\n");
1584                 return -ENODEV;
1585         }
1586         par->drm_agp->acquire();
1587
1588         if (!(par->i810_gtt.i810_fb_memory =
1589               par->drm_agp->allocate_memory(size >> 12, AGP_NORMAL_MEMORY))) {
1590                 printk("i810fb_alloc_fbmem: can't allocate framebuffer "
1591                        "memory\n");
1592                 par->drm_agp->release();
1593                 return -ENOMEM;
1594         }
1595         if (par->drm_agp->bind_memory(par->i810_gtt.i810_fb_memory,
1596                                       par->fb.offset)) {
1597                 printk("i810fb_alloc_fbmem: can't bind framebuffer memory\n");
1598                 par->drm_agp->release();
1599                 return -EBUSY;
1600         }
1601
1602         if (!(par->i810_gtt.i810_cursor_memory =
1603               par->drm_agp->allocate_memory(par->cursor_heap.size >> 12,
1604                                             AGP_PHYSICAL_MEMORY))) {
1605                 printk("i810fb_alloc_cursormem:  can't allocate"
1606                        "cursor memory\n");
1607                 par->drm_agp->release();
1608                 return -ENOMEM;
1609         }
1610         if (par->drm_agp->bind_memory(par->i810_gtt.i810_cursor_memory,
1611                             par->cursor_heap.offset)) {
1612                 printk("i810fb_alloc_cursormem: cannot bind cursor memory\n");
1613                 par->drm_agp->release();
1614                 return -EBUSY;
1615         }
1616
1617         par->cursor_heap.physical = par->i810_gtt.i810_cursor_memory->physical;
1618
1619         i810_fix_pointers(par);
1620
1621         par->drm_agp->release();
1622
1623         return 0;
1624 }
1625
1626 /***************************************************************
1627  *                    Initialization                           *
1628  ***************************************************************/
1629
1630 /**
1631  * i810_init_monspecs
1632  * @info: pointer to device specific info structure
1633  *
1634  * DESCRIPTION:
1635  * Sets the the user monitor's horizontal and vertical
1636  * frequency limits
1637  */
1638 static void __devinit i810_init_monspecs(struct fb_info *info)
1639 {
1640         if (!hsync1)
1641                 hsync1 = HFMIN;
1642         if (!hsync2)
1643                 hsync2 = HFMAX;
1644         info->monspecs.hfmax = hsync2;
1645         info->monspecs.hfmin = hsync1;
1646         if (hsync2 < hsync1)
1647                 info->monspecs.hfmin = hsync2;
1648
1649         if (!vsync1)
1650                 vsync1 = VFMIN;
1651         if (!vsync2)
1652                 vsync2 = VFMAX;
1653         if (IS_DVT && vsync1 < 60)
1654                 vsync1 = 60;
1655         info->monspecs.vfmax = vsync2;
1656         info->monspecs.vfmin = vsync1;
1657         if (vsync2 < vsync1)
1658                 info->monspecs.vfmin = vsync2;
1659 }
1660
1661 /**
1662  * i810_init_defaults - initializes default values to use
1663  * @par: pointer to i810fb_par structure
1664  * @info: pointer to current fb_info structure
1665  */
1666 static void __devinit i810_init_defaults(struct i810fb_par *par,
1667                                       struct fb_info *info)
1668 {
1669         if (voffset)
1670                 v_offset_default = voffset;
1671         else if (par->aperture.size > 32 * 1024 * 1024)
1672                 v_offset_default = 16;
1673         else
1674                 v_offset_default = 8;
1675
1676         if (!vram)
1677                 vram = 1;
1678
1679         if (accel)
1680                 par->dev_flags |= HAS_ACCELERATION;
1681
1682         if (sync)
1683                 par->dev_flags |= ALWAYS_SYNC;
1684
1685         if (bpp < 8)
1686                 bpp = 8;
1687
1688         if (!vyres)
1689                 vyres = (vram << 20)/(xres*bpp >> 3);
1690
1691         par->i810fb_ops = i810fb_ops;
1692         info->var.xres = xres;
1693         info->var.yres = yres;
1694         info->var.yres_virtual = vyres;
1695         info->var.bits_per_pixel = bpp;
1696
1697         if (dcolor)
1698                 info->var.nonstd = 1;
1699
1700         if (par->dev_flags & HAS_ACCELERATION)
1701                 info->var.accel_flags = 1;
1702
1703         i810_init_monspecs(info);
1704 }
1705
1706 /**
1707  * i810_init_device - initialize device
1708  * @par: pointer to i810fb_par structure
1709  */
1710 static void __devinit i810_init_device(struct i810fb_par *par)
1711 {
1712         u8 reg, *mmio = par->mmio_start_virtual;
1713
1714         if (mtrr) set_mtrr(par);
1715
1716         i810_init_cursor(par);
1717
1718         /* mvo: enable external vga-connector (for laptops) */
1719         if (ext_vga) {
1720                 i810_writel(HVSYNC, mmio, 0);
1721                 i810_writel(PWR_CLKC, mmio, 3);
1722         }
1723
1724         pci_read_config_byte(par->dev, 0x50, &reg);
1725         reg &= FREQ_MASK;
1726         par->mem_freq = (reg) ? 133 : 100;
1727 }
1728
1729 static int __devinit
1730 i810_allocate_pci_resource(struct i810fb_par *par,
1731                            const struct pci_device_id *entry)
1732 {
1733         int err;
1734
1735         if ((err = pci_enable_device(par->dev))) {
1736                 printk("i810fb_init: cannot enable device\n");
1737                 return err;
1738         }
1739         par->res_flags |= PCI_DEVICE_ENABLED;
1740
1741         if (pci_resource_len(par->dev, 0) > 512 * 1024) {
1742                 par->aperture.physical = pci_resource_start(par->dev, 0);
1743                 par->aperture.size = pci_resource_len(par->dev, 0);
1744                 par->mmio_start_phys = pci_resource_start(par->dev, 1);
1745         } else {
1746                 par->aperture.physical = pci_resource_start(par->dev, 1);
1747                 par->aperture.size = pci_resource_len(par->dev, 1);
1748                 par->mmio_start_phys = pci_resource_start(par->dev, 0);
1749         }
1750         if (!par->aperture.size) {
1751                 printk("i810fb_init: device is disabled\n");
1752                 return -ENOMEM;
1753         }
1754
1755         if (!request_mem_region(par->aperture.physical,
1756                                 par->aperture.size,
1757                                 i810_pci_list[entry->driver_data])) {
1758                 printk("i810fb_init: cannot request framebuffer region\n");
1759                 return -ENODEV;
1760         }
1761         par->res_flags |= FRAMEBUFFER_REQ;
1762
1763         par->aperture.virtual = ioremap_nocache(par->aperture.physical,
1764                                         par->aperture.size);
1765         if (!par->aperture.virtual) {
1766                 printk("i810fb_init: cannot remap framebuffer region\n");
1767                 return -ENODEV;
1768         }
1769
1770         if (!request_mem_region(par->mmio_start_phys,
1771                                 MMIO_SIZE,
1772                                 i810_pci_list[entry->driver_data])) {
1773                 printk("i810fb_init: cannot request mmio region\n");
1774                 return -ENODEV;
1775         }
1776         par->res_flags |= MMIO_REQ;
1777
1778         par->mmio_start_virtual = ioremap_nocache(par->mmio_start_phys,
1779                                                   MMIO_SIZE);
1780         if (!par->mmio_start_virtual) {
1781                 printk("i810fb_init: cannot remap mmio region\n");
1782                 return -ENODEV;
1783         }
1784
1785         return 0;
1786 }
1787
1788 int __init i810fb_setup(char *options)
1789 {
1790         char *this_opt, *suffix = NULL;
1791
1792         if (!options || !*options)
1793                 return 0;
1794
1795         while ((this_opt = strsep(&options, ",")) != NULL) {
1796                 if (!strncmp(this_opt, "mtrr", 4))
1797                         mtrr = 1;
1798                 else if (!strncmp(this_opt, "accel", 5))
1799                         accel = 1;
1800                 else if (!strncmp(this_opt, "ext_vga", 7))
1801                         ext_vga = 1;
1802                 else if (!strncmp(this_opt, "sync", 4))
1803                         sync = 1;
1804                 else if (!strncmp(this_opt, "vram:", 5))
1805                         vram = (simple_strtoul(this_opt+5, NULL, 0));
1806                 else if (!strncmp(this_opt, "voffset:", 8))
1807                         voffset = (simple_strtoul(this_opt+8, NULL, 0));
1808                 else if (!strncmp(this_opt, "xres:", 5))
1809                         xres = simple_strtoul(this_opt+5, NULL, 0);
1810                 else if (!strncmp(this_opt, "yres:", 5))
1811                         yres = simple_strtoul(this_opt+5, NULL, 0);
1812                 else if (!strncmp(this_opt, "vyres:", 6))
1813                         vyres = simple_strtoul(this_opt+6, NULL, 0);
1814                 else if (!strncmp(this_opt, "bpp:", 4))
1815                         bpp = simple_strtoul(this_opt+4, NULL, 0);
1816                 else if (!strncmp(this_opt, "hsync1:", 7)) {
1817                         hsync1 = simple_strtoul(this_opt+7, &suffix, 0);
1818                         if (strncmp(suffix, "H", 1))
1819                                 hsync1 *= 1000;
1820                 } else if (!strncmp(this_opt, "hsync2:", 7)) {
1821                         hsync2 = simple_strtoul(this_opt+7, &suffix, 0);
1822                         if (strncmp(suffix, "H", 1))
1823                                 hsync2 *= 1000;
1824                 } else if (!strncmp(this_opt, "vsync1:", 7))
1825                         vsync1 = simple_strtoul(this_opt+7, NULL, 0);
1826                 else if (!strncmp(this_opt, "vsync2:", 7))
1827                         vsync2 = simple_strtoul(this_opt+7, NULL, 0);
1828                 else if (!strncmp(this_opt, "dcolor", 6))
1829                         dcolor = 1;
1830         }
1831         return 0;
1832 }
1833
1834 static int __devinit i810fb_init_pci (struct pci_dev *dev,
1835                                    const struct pci_device_id *entry)
1836 {
1837         struct fb_info    *info;
1838         struct i810fb_par *par = NULL;
1839         int err, vfreq, hfreq, pixclock;
1840
1841         if (!(info = kmalloc(sizeof(struct fb_info), GFP_KERNEL))) {
1842                 i810fb_release_resource(info, par);
1843                 return -ENOMEM;
1844         }
1845         memset(info, 0, sizeof(struct fb_info));
1846
1847         if(!(par = kmalloc(sizeof(struct i810fb_par), GFP_KERNEL))) {
1848                 i810fb_release_resource(info, par);
1849                 return -ENOMEM;
1850         }
1851         memset(par, 0, sizeof(struct i810fb_par));
1852
1853         par->dev = dev;
1854         info->par = par;
1855
1856         if (!(info->pixmap.addr = kmalloc(64*1024, GFP_KERNEL))) {
1857                 i810fb_release_resource(info, par);
1858                 return -ENOMEM;
1859         }
1860         memset(info->pixmap.addr, 0, 64*1024);
1861         info->pixmap.size = 64*1024;
1862         info->pixmap.buf_align = 8;
1863         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1864
1865         if ((err = i810_allocate_pci_resource(par, entry))) {
1866                 i810fb_release_resource(info, par);
1867                 return err;
1868         }
1869
1870         i810_init_defaults(par, info);
1871
1872         if ((err = i810_alloc_agp_mem(info))) {
1873                 i810fb_release_resource(info, par);
1874                 return err;
1875         }
1876
1877         i810_init_device(par);
1878
1879         info->screen_base = par->fb.virtual;
1880         info->fbops = &par->i810fb_ops;
1881         info->pseudo_palette = par->pseudo_palette;
1882         info->flags = FBINFO_FLAG_DEFAULT;
1883
1884         fb_alloc_cmap(&info->cmap, 256, 0);
1885
1886         if ((err = info->fbops->fb_check_var(&info->var, info))) {
1887                 i810fb_release_resource(info, par);
1888                 return err;
1889         }
1890         encode_fix(&info->fix, info);
1891
1892         i810fb_init_ringbuffer(info);
1893         err = register_framebuffer(info);
1894         if (err < 0) {
1895                 i810fb_release_resource(info, par);
1896                 printk("i810fb_init: cannot register framebuffer device\n");
1897                 return err;
1898         }
1899
1900         pci_set_drvdata(dev, info);
1901         pixclock = 1000000000/(info->var.pixclock);
1902         pixclock *= 1000;
1903         hfreq = pixclock/(info->var.xres + info->var.left_margin +
1904                           info->var.hsync_len + info->var.right_margin);
1905         vfreq = hfreq/(info->var.yres + info->var.upper_margin +
1906                        info->var.vsync_len + info->var.lower_margin);
1907
1908         printk("I810FB: fb%d         : %s v%d.%d.%d%s\n"
1909                "I810FB: Video RAM   : %dK\n"
1910                "I810FB: Monitor     : H: %d-%d KHz V: %d-%d Hz\n"
1911                "I810FB: Mode        : %dx%d-%dbpp@%dHz\n",
1912                info->node,
1913                i810_pci_list[entry->driver_data],
1914                VERSION_MAJOR, VERSION_MINOR, VERSION_TEENIE, BRANCH_VERSION,
1915                (int) par->fb.size>>10, info->monspecs.hfmin/1000,
1916                info->monspecs.hfmax/1000, info->monspecs.vfmin,
1917                info->monspecs.vfmax, info->var.xres,
1918                info->var.yres, info->var.bits_per_pixel, vfreq);
1919         return 0;
1920 }
1921
1922 /***************************************************************
1923  *                     De-initialization                        *
1924  ***************************************************************/
1925
1926 static void i810fb_release_resource(struct fb_info *info,
1927                                     struct i810fb_par *par)
1928 {
1929         if (par) {
1930                 unset_mtrr(par);
1931                 if (par->drm_agp) {
1932                         drm_agp_t *agp = par->drm_agp;
1933                         struct gtt_data *gtt = &par->i810_gtt;
1934
1935                         if (par->i810_gtt.i810_cursor_memory)
1936                                 agp->free_memory(gtt->i810_cursor_memory);
1937                         if (par->i810_gtt.i810_fb_memory)
1938                                 agp->free_memory(gtt->i810_fb_memory);
1939
1940                         inter_module_put("drm_agp");
1941                         par->drm_agp = NULL;
1942                 }
1943
1944                 if (par->mmio_start_virtual)
1945                         iounmap(par->mmio_start_virtual);
1946                 if (par->aperture.virtual)
1947                         iounmap(par->aperture.virtual);
1948
1949                 if (par->res_flags & FRAMEBUFFER_REQ)
1950                         release_mem_region(par->aperture.physical,
1951                                            par->aperture.size);
1952                 if (par->res_flags & MMIO_REQ)
1953                         release_mem_region(par->mmio_start_phys, MMIO_SIZE);
1954
1955                 if (par->res_flags & PCI_DEVICE_ENABLED)
1956                         pci_disable_device(par->dev);
1957
1958                 kfree(par);
1959         }
1960         if (info)
1961                 kfree(info);
1962 }
1963
1964 static void __exit i810fb_remove_pci(struct pci_dev *dev)
1965 {
1966         struct fb_info *info = pci_get_drvdata(dev);
1967         struct i810fb_par *par = (struct i810fb_par *) info->par;
1968
1969         unregister_framebuffer(info);
1970         i810fb_release_resource(info, par);
1971         pci_set_drvdata(dev, NULL);
1972         printk("cleanup_module:  unloaded i810 framebuffer device\n");
1973 }
1974
1975 #ifndef MODULE
1976 int __init i810fb_init(void)
1977 {
1978         if (agp_intel_init()) {
1979                 printk("i810fb_init: cannot initialize intel agpgart\n");
1980                 return -ENODEV;
1981         }
1982
1983         if (pci_register_driver(&i810fb_driver) > 0)
1984                 return 0;
1985         pci_unregister_driver(&i810fb_driver);
1986         return -ENODEV;
1987 }
1988 #endif
1989
1990 /*********************************************************************
1991  *                          Modularization                           *
1992  *********************************************************************/
1993
1994 #ifdef MODULE
1995
1996 int __init i810fb_init(void)
1997 {
1998         hsync1 *= 1000;
1999         hsync2 *= 1000;
2000
2001         if (pci_register_driver(&i810fb_driver) > 0)
2002                 return 0;
2003         pci_unregister_driver(&i810fb_driver);
2004         return -ENODEV;
2005 }
2006
2007 MODULE_PARM(vram, "i");
2008 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB"
2009                  " (default=4)");
2010 MODULE_PARM(voffset, "i");
2011 MODULE_PARM_DESC(voffset, "at what offset to place start of framebuffer "
2012                  "memory (0 to maximum aperture size), in MiB (default = 48)");
2013 MODULE_PARM(bpp, "i");
2014 MODULE_PARM_DESC(bpp, "Color depth for display in bits per pixel"
2015                  " (default = 8)");
2016 MODULE_PARM(xres, "i");
2017 MODULE_PARM_DESC(xres, "Horizontal resolution in pixels (default = 640)");
2018 MODULE_PARM(yres, "i");
2019 MODULE_PARM_DESC(yres, "Vertical resolution in scanlines (default = 480)");
2020 MODULE_PARM(vyres, "i");
2021 MODULE_PARM_DESC(vyres, "Virtual vertical resolution in scanlines"
2022                  " (default = 480)");
2023 MODULE_PARM(hsync1, "i");
2024 MODULE_PARM_DESC(hsync1, "Minimum horizontal frequency of monitor in KHz"
2025                  " (default = 31)");
2026 MODULE_PARM(hsync2, "i");
2027 MODULE_PARM_DESC(hsync2, "Maximum horizontal frequency of monitor in KHz"
2028                  " (default = 31)");
2029 MODULE_PARM(vsync1, "i");
2030 MODULE_PARM_DESC(vsync1, "Minimum vertical frequency of monitor in Hz"
2031                  " (default = 50)");
2032 MODULE_PARM(vsync2, "i");
2033 MODULE_PARM_DESC(vsync2, "Maximum vertical frequency of monitor in Hz"
2034                  " (default = 60)");
2035 MODULE_PARM(accel, "i");
2036 MODULE_PARM_DESC(accel, "Use Acceleration (BLIT) engine (default = 0)");
2037 MODULE_PARM(mtrr, "i");
2038 MODULE_PARM_DESC(mtrr, "Use MTRR (default = 0)");
2039 MODULE_PARM(ext_vga, "i");
2040 MODULE_PARM_DESC(ext_vga, "Enable external VGA connector (default = 0)");
2041 MODULE_PARM(sync, "i");
2042 MODULE_PARM_DESC(sync, "wait for accel engine to finish drawing"
2043                  " (default = 0)");
2044 MODULE_PARM(dcolor, "i");
2045 MODULE_PARM_DESC(dcolor, "use DirectColor visuals"
2046                  " (default = 0 = TrueColor)");
2047
2048 MODULE_AUTHOR("Tony A. Daplas");
2049 MODULE_DESCRIPTION("Framebuffer device for the Intel 810/815 and"
2050                    " compatible cards");
2051 MODULE_LICENSE("GPL");
2052
2053 static void __exit i810fb_exit(void)
2054 {
2055         pci_unregister_driver(&i810fb_driver);
2056 }
2057 module_init(i810fb_init);
2058 module_exit(i810fb_exit);
2059
2060 #endif /* MODULE */
2061
2062