drivers/video/intelfb/intelfbdrv.c

   1 /*
   2  * intelfb
   3  *
   4  * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G
   5  * integrated graphics chips.
   6  *
   7  * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org>
   8  *                   2004 Sylvain Meyer
   9  *
  10  * This driver consists of two parts.  The first part (intelfbdrv.c) provides
  11  * the basic fbdev interfaces, is derived in part from the radeonfb and
  12  * vesafb drivers, and is covered by the GPL.  The second part (intelfbhw.c)
  13  * provides the code to program the hardware.  Most of it is derived from
  14  * the i810/i830 XFree86 driver.  The HW-specific code is covered here
  15  * under a dual license (GPL and MIT/XFree86 license).
  16  *
  17  * Author: David Dawes
  18  *
  19  */
  20
  21 /* $DHD: intelfb/intelfbdrv.c,v 1.20 2003/06/27 15:17:40 dawes Exp $ */
  22
  23 /*
  24  * Changes:
  25  *    01/2003 - Initial driver (0.1.0), no mode switching, no acceleration.
  26  *              This initial version is a basic core that works a lot like
  27  *              the vesafb driver.  It must be built-in to the kernel,
  28  *              and the initial video mode must be set with vga=XXX at
  29  *              boot time.  (David Dawes)
  30  *
  31  *    01/2003 - Version 0.2.0: Mode switching added, colormap support
  32  *              implemented, Y panning, and soft screen blanking implemented.
  33  *              No acceleration yet.  (David Dawes)
  34  *
  35  *    01/2003 - Version 0.3.0: fbcon acceleration support added.  Module
  36  *              option handling added.  (David Dawes)
  37  *
  38  *    01/2003 - Version 0.4.0: fbcon HW cursor support added.  (David Dawes)
  39  *
  40  *    01/2003 - Version 0.4.1: Add auto-generation of built-in modes.
  41  *              (David Dawes)
  42  *
  43  *    02/2003 - Version 0.4.2: Add check for active non-CRT devices, and
  44  *              mode validation checks.  (David Dawes)
  45  *
  46  *    02/2003 - Version 0.4.3: Check when the VC is in graphics mode so that
  47  *              acceleration is disabled while an XFree86 server is running.
  48  *              (David Dawes)
  49  *
  50  *    02/2003 - Version 0.4.4: Monitor DPMS support.  (David Dawes)
  51  *
  52  *    02/2003 - Version 0.4.5: Basic XFree86 + fbdev working.  (David Dawes)
  53  *
  54  *    02/2003 - Version 0.5.0: Modify to work with the 2.5.32 kernel as well
  55  *              as 2.4.x kernels.  (David Dawes)
  56  *
  57  *    02/2003 - Version 0.6.0: Split out HW-specifics into a separate file.
  58  *              (David Dawes)
  59  *
  60  *    02/2003 - Version 0.7.0: Test on 852GM/855GM.  Acceleration and HW
  61  *              cursor are disabled on this platform.  (David Dawes)
  62  *
  63  *    02/2003 - Version 0.7.1: Test on 845G.  Acceleration is disabled
  64  *              on this platform.  (David Dawes)
  65  *
  66  *    02/2003 - Version 0.7.2: Test on 830M.  Acceleration and HW
  67  *              cursor are disabled on this platform.  (David Dawes)
  68  *
  69  *    02/2003 - Version 0.7.3: Fix 8-bit modes for mobile platforms
  70  *              (David Dawes)
  71  *
  72  *    02/2003 - Version 0.7.4: Add checks for FB and FBCON_HAS_CFB* configured
  73  *              in the kernel, and add mode bpp verification and default
  74  *              bpp selection based on which FBCON_HAS_CFB* are configured.
  75  *              (David Dawes)
  76  *
  77  *    02/2003 - Version 0.7.5: Add basic package/install scripts based on the
  78  *              DRI packaging scripts.  (David Dawes)
  79  *
  80  *    04/2003 - Version 0.7.6: Fix typo that affects builds with SMP-enabled
  81  *              kernels.  (David Dawes, reported by Anupam).
  82  *
  83  *    06/2003 - Version 0.7.7:
  84  *              Fix Makefile.kernel build problem (Tsutomu Yasuda).
  85  *              Fix mis-placed #endif (2.4.21 kernel).
  86  *
  87  *    09/2004 - Version 0.9.0 - by Sylvain Meyer
  88  *              Port to linux 2.6 kernel fbdev
  89  *              Fix HW accel and HW cursor on i845G
  90  *              Use of agpgart for fb memory reservation
  91  *              Add mtrr support
  92  *
  93  *    10/2004 - Version 0.9.1
  94  *              Use module_param instead of old MODULE_PARM
  95  *              Some cleanup
  96  *
  97  *    11/2004 - Version 0.9.2
  98  *              Add vram option to reserve more memory than stolen by BIOS
  99  *              Fix intelfbhw_pan_display typo
 100  *              Add __initdata annotations
 101  *
 102  * TODO:
 103  *
 104  *
 105  * Wish List:
 106  *
 107  *
 108  */
 109
 110 #include <linux/config.h>
 111 #include <linux/module.h>
 112 #include <linux/kernel.h>
 113 #include <linux/errno.h>
 114 #include <linux/string.h>
 115 #include <linux/mm.h>
 116 #include <linux/tty.h>
 117 #include <linux/slab.h>
 118 #include <linux/delay.h>
 119 #include <linux/fb.h>
 120 #include <linux/console.h>
 121 #include <linux/selection.h>
 122 #include <linux/ioport.h>
 123 #include <linux/init.h>
 124 #include <linux/pci.h>
 125 #include <linux/vmalloc.h>
 126 #include <linux/kd.h>
 127 #include <linux/vt_kern.h>
 128 #include <linux/pagemap.h>
 129 #include <linux/version.h>
 130
 131 #include <asm/io.h>
 132
 133 #ifdef CONFIG_MTRR
 134 #include <asm/mtrr.h>
 135 #endif
 136
 137 #include "intelfb.h"
 138 #include "intelfbdrv.h"
 139 #include "intelfbhw.h"
 140
 141 /*
 142  * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
 143  * mobile chipsets from being registered.
 144  */
 145 #if DETECT_VGA_CLASS_ONLY
 146 #define INTELFB_CLASS_MASK ~0 << 8
 147 #else
 148 #define INTELFB_CLASS_MASK 0
 149 #endif
 150
 151 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
 152         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_830M, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_830M },
 153         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_845G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_845G },
 154         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_85XGM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_85XGM },
 155         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_865G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_865G },
 156         { 0, }
 157 };
 158
 159 /* Global data */
 160 static int num_registered = 0;
 161
 162 /* fb ops */
 163 static struct fb_ops intel_fb_ops = {
 164         .owner =                THIS_MODULE,
 165         .fb_check_var =         intelfb_check_var,
 166         .fb_set_par =           intelfb_set_par,
 167         .fb_setcolreg =         intelfb_setcolreg,
 168         .fb_blank =             intelfb_blank,
 169         .fb_pan_display =       intelfb_pan_display,
 170         .fb_fillrect  =         intelfb_fillrect,
 171         .fb_copyarea  =         intelfb_copyarea,
 172         .fb_imageblit =         intelfb_imageblit,
 173         .fb_cursor =            intelfb_cursor,
 174         .fb_sync =              intelfb_sync,
 175         .fb_ioctl =             intelfb_ioctl
 176 };
 177
 178 /* PCI driver module table */
 179 static struct pci_driver intelfb_driver = {
 180         .name =         "Intel(R) " SUPPORTED_CHIPSETS " Framebuffer Driver",
 181         .id_table =     intelfb_pci_table,
 182         .probe =        intelfb_pci_register,
 183         .remove =       __devexit_p(intelfb_pci_unregister)
 184 };
 185
 186 /* Module description/parameters */
 187 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
 188               "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
 189 MODULE_DESCRIPTION(
 190         "Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS " chipsets");
 191 MODULE_LICENSE("Dual BSD/GPL");
 192 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
 193
 194 static int accel        __initdata = 1;
 195 static int vram         __initdata = 4;
 196 static int hwcursor     __initdata = 1;
 197 static int mtrr         __initdata = 1;
 198 static int fixed        __initdata = 0;
 199 static int noinit       __initdata = 0;
 200 static int noregister   __initdata = 0;
 201 static int probeonly    __initdata = 0;
 202 static int idonly       __initdata = 0;
 203 static int bailearly    __initdata = 0;
 204 static char *mode       __initdata = NULL;
 205
 206 module_param(accel, bool, S_IRUGO);
 207 MODULE_PARM_DESC(accel, "Enable console acceleration");
 208 module_param(vram, int, S_IRUGO);
 209 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
 210 module_param(hwcursor, bool, S_IRUGO);
 211 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
 212 module_param(mtrr, bool, S_IRUGO);
 213 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
 214 module_param(fixed, bool, S_IRUGO);
 215 MODULE_PARM_DESC(fixed, "Disable mode switching");
 216 module_param(noinit, bool, 0);
 217 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
 218 module_param(noregister, bool, 0);
 219 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
 220 module_param(probeonly, bool, 0);
 221 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
 222 module_param(idonly, bool, 0);
 223 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
 224 module_param(bailearly, bool, 0);
 225 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
 226 module_param(mode, charp, S_IRUGO);
 227 MODULE_PARM_DESC(mode,
 228                  "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
 229 /***************************************************************
 230  *                     modules entry points                    *
 231  ***************************************************************/
 232
 233 /* module load/unload entry points */
 234 int __init
 235 intelfb_init(void)
 236 {
 237 #ifndef MODULE
 238         char *option = NULL;
 239 #endif
 240
 241         DBG_MSG("intelfb_init\n");
 242
 243         INF_MSG("Framebuffer driver for "
 244                 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
 245         INF_MSG("Version " INTELFB_VERSION "\n");
 246
 247         if (idonly)
 248                 return -ENODEV;
 249
 250 #ifndef MODULE
 251         if (fb_get_options("intelfb", &option))
 252                 return -ENODEV;
 253         intelfb_setup(option);
 254 #endif
 255
 256         return pci_module_init(&intelfb_driver);
 257 }
 258
 259 static void __exit
 260 intelfb_exit(void)
 261 {
 262         DBG_MSG("intelfb_exit\n");
 263         pci_unregister_driver(&intelfb_driver);
 264 }
 265
 266 #ifndef MODULE
 267 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
 268 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name), NULL, 0)
 269 #define OPT_STRVAL(opt, name) (opt + strlen(name))
 270
 271 static __inline__ char *
 272 get_opt_string(const char *this_opt, const char *name)
 273 {
 274         const char *p;
 275         int i;
 276         char *ret;
 277
 278         p = OPT_STRVAL(this_opt, name);
 279         i = 0;
 280         while (p[i] && p[i] != ' ' && p[i] != ',')
 281                 i++;
 282         ret = kmalloc(i + 1, GFP_KERNEL);
 283         if (ret) {
 284                 strncpy(ret, p, i);
 285                 ret[i] = '\0';
 286         }
 287         return ret;
 288 }
 289
 290 static __inline__ int
 291 get_opt_int(const char *this_opt, const char *name, int *ret)
 292 {
 293         if (!ret)
 294                 return 0;
 295
 296         if (!OPT_EQUAL(this_opt, name))
 297                 return 0;
 298
 299         *ret = OPT_INTVAL(this_opt, name);
 300         return 1;
 301 }
 302
 303 static __inline__ int
 304 get_opt_bool(const char *this_opt, const char *name, int *ret)
 305 {
 306         if (!ret)
 307                 return 0;
 308
 309         if (OPT_EQUAL(this_opt, name)) {
 310                 if (this_opt[strlen(name)] == '=')
 311                         *ret = simple_strtoul(this_opt + strlen(name) + 1,
 312                                               NULL, 0);
 313                 else
 314                         *ret = 1;
 315         } else {
 316                 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
 317                         *ret = 0;
 318                 else
 319                         return 0;
 320         }
 321         return 1;
 322 }
 323
 324 int __init
 325 intelfb_setup(char *options)
 326 {
 327         char *this_opt;
 328
 329         DBG_MSG("intelfb_setup\n");
 330
 331         if (!options || !*options) {
 332                 DBG_MSG("no options\n");
 333                 return 0;
 334         } else
 335                 DBG_MSG("options: %s\n", options);
 336
 337         /*
 338          * These are the built-in options analogous to the module parameters
 339          * defined above.
 340          *
 341          * The syntax is:
 342          *
 343          *    video=intelfb:[mode][,<param>=<val>] ...
 344          *
 345          * e.g.,
 346          *
 347          *    video=intelfb:1024x768-16@75,accel=0
 348          */
 349
 350         while ((this_opt = strsep(&options, ","))) {
 351                 if (!*this_opt)
 352                         continue;
 353                 if (get_opt_bool(this_opt, "accel", &accel))
 354                         ;
 355                 else if (get_opt_int(this_opt, "vram", &vram))
 356                         ;
 357                 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
 358                         ;
 359                 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
 360                         ;
 361                 else if (get_opt_bool(this_opt, "fixed", &fixed))
 362                         ;
 363                 else if (get_opt_bool(this_opt, "init", &noinit))
 364                         noinit = !noinit;
 365                 else if (OPT_EQUAL(this_opt, "mode="))
 366                         mode = get_opt_string(this_opt, "mode=");
 367                 else
 368                         mode = this_opt;
 369         }
 370
 371         return 0;
 372 }
 373
 374 #endif
 375
 376 module_init(intelfb_init);
 377
 378 #ifdef MODULE
 379 module_exit(intelfb_exit);
 380 #endif
 381
 382 /***************************************************************
 383  *                     mtrr support functions                  *
 384  ***************************************************************/
 385
 386 #ifdef CONFIG_MTRR
 387 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
 388 {
 389         dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
 390                                    dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
 391         if (dinfo->mtrr_reg < 0) {
 392                 ERR_MSG("unable to set MTRR\n");
 393                 return;
 394         }
 395         dinfo->has_mtrr = 1;
 396 }
 397 static inline void unset_mtrr(struct intelfb_info *dinfo)
 398 {
 399         if (dinfo->has_mtrr)
 400                 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
 401                          dinfo->aperture.size);
 402 }
 403 #else
 404 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
 405
 406 #define unset_mtrr(x) do { } while (0)
 407 #endif /* CONFIG_MTRR */
 408
 409 /***************************************************************
 410  *                        driver init / cleanup                *
 411  ***************************************************************/
 412
 413 static void
 414 cleanup(struct intelfb_info *dinfo)
 415 {
 416         DBG_MSG("cleanup\n");
 417
 418         if (!dinfo)
 419                 return;
 420
 421         fb_dealloc_cmap(&dinfo->info->cmap);
 422         kfree(dinfo->info->pixmap.addr);
 423
 424         if (dinfo->registered)
 425                 unregister_framebuffer(dinfo->info);
 426
 427         unset_mtrr(dinfo);
 428
 429         if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
 430                 agp_unbind_memory(dinfo->gtt_fb_mem);
 431                 agp_free_memory(dinfo->gtt_fb_mem);
 432         }
 433         if (dinfo->gtt_cursor_mem) {
 434                 agp_unbind_memory(dinfo->gtt_cursor_mem);
 435                 agp_free_memory(dinfo->gtt_cursor_mem);
 436         }
 437         if (dinfo->gtt_ring_mem) {
 438                 agp_unbind_memory(dinfo->gtt_ring_mem);
 439                 agp_free_memory(dinfo->gtt_ring_mem);
 440         }
 441
 442         if (dinfo->mmio_base)
 443                 iounmap((void __iomem *)dinfo->mmio_base);
 444         if (dinfo->aperture.virtual)
 445                 iounmap((void __iomem *)dinfo->aperture.virtual);
 446
 447         if (dinfo->mmio_base_phys)
 448                 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
 449         if (dinfo->aperture.physical)
 450                 release_mem_region(dinfo->aperture.physical,
 451                                    dinfo->aperture.size);
 452         framebuffer_release(dinfo->info);
 453 }
 454
 455 #define bailout(dinfo) do {                                             \
 456         DBG_MSG("bailout\n");                                           \
 457         cleanup(dinfo);                                                 \
 458         INF_MSG("Not going to register framebuffer, exiting...\n");     \
 459         return -ENODEV;                                                 \
 460 } while (0)
 461
 462
 463 static int __devinit
 464 intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
 465 {
 466         struct fb_info *info;
 467         struct intelfb_info *dinfo;
 468         int i, j, err, dvo;
 469         int aperture_size, stolen_size;
 470         struct agp_kern_info gtt_info;
 471         int agp_memtype;
 472         const char *s;
 473
 474         DBG_MSG("intelfb_pci_register\n");
 475
 476         num_registered++;
 477         if (num_registered != 1) {
 478                 ERR_MSG("Attempted to register %d devices "
 479                         "(should be only 1).\n", num_registered);
 480                 return -ENODEV;
 481         }
 482
 483         info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
 484         if (!info) {
 485                 ERR_MSG("Could not allocate memory for intelfb_info.\n");
 486                 return -ENODEV;
 487         }
 488         if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
 489                 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
 490                 goto err_out_cmap;
 491                 return -ENODEV;
 492         }
 493
 494         dinfo = info->par;
 495         dinfo->info  = info;
 496         dinfo->fbops = &intel_fb_ops;
 497         dinfo->pdev  = pdev;
 498
 499         /* Reserve pixmap space. */
 500         info->pixmap.addr = kmalloc(64 * 1024, GFP_KERNEL);
 501         if (info->pixmap.addr == NULL) {
 502                 ERR_MSG("Cannot reserve pixmap memory.\n");
 503                 goto err_out_pixmap;
 504         }
 505         memset(info->pixmap.addr, 0, 64 * 1024);
 506
 507         /* set early this option because it could be changed by tv encoder
 508            driver */
 509         dinfo->fixed_mode = fixed;
 510
 511         /* Enable device. */
 512         if ((err = pci_enable_device(pdev))) {
 513                 ERR_MSG("Cannot enable device.\n");
 514                 cleanup(dinfo);
 515                 return -ENODEV;
 516         }
 517
 518         /* Set base addresses. */
 519         dinfo->aperture.physical = pci_resource_start(pdev, 0);
 520         dinfo->aperture.size     = pci_resource_len(pdev, 0);
 521         dinfo->mmio_base_phys    = pci_resource_start(pdev, 1);
 522
 523         DBG_MSG("fb aperture: 0x%lx/0x%lx, MMIO region: 0x%lx/0x%lx\n",
 524                 pci_resource_start(pdev, 0), pci_resource_len(pdev, 0),
 525                 pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
 526
 527         /* Reserve the fb and MMIO regions */
 528         if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
 529                                 INTELFB_MODULE_NAME)) {
 530                 ERR_MSG("Cannot reserve FB region.\n");
 531                 cleanup(dinfo);
 532                 return -ENODEV;
 533         }
 534         if (!request_mem_region(dinfo->mmio_base_phys,
 535                                 INTEL_REG_SIZE,
 536                                 INTELFB_MODULE_NAME)) {
 537                 ERR_MSG("Cannot reserve MMIO region.\n");
 538                 cleanup(dinfo);
 539                 return -ENODEV;
 540         }
 541
 542         /* Map the fb and MMIO regions */
 543         dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
 544                 (dinfo->aperture.physical, dinfo->aperture.size);
 545         if (!dinfo->aperture.virtual) {
 546                 ERR_MSG("Cannot remap FB region.\n");
 547                 cleanup(dinfo);
 548                 return -ENODEV;
 549         }
 550         dinfo->mmio_base =
 551                 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
 552                                                INTEL_REG_SIZE);
 553         if (!dinfo->mmio_base) {
 554                 ERR_MSG("Cannot remap MMIO region.\n");
 555                 cleanup(dinfo);
 556                 return -ENODEV;
 557         }
 558
 559         /* Get the chipset info. */
 560         dinfo->pci_chipset = pdev->device;
 561
 562         if (intelfbhw_get_chipset(pdev, &dinfo->name, &dinfo->chipset,
 563                                   &dinfo->mobile)) {
 564                 cleanup(dinfo);
 565                 return -ENODEV;
 566         }
 567
 568         if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
 569                 cleanup(dinfo);
 570                 return -ENODEV;
 571         }
 572
 573         INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
 574                 "stolen memory %dkB\n",
 575                 pdev->bus->number, PCI_SLOT(pdev->devfn),
 576                 PCI_FUNC(pdev->devfn), dinfo->name,
 577                 BtoMB(aperture_size), BtoKB(stolen_size));
 578
 579         /* Set these from the options. */
 580         dinfo->accel    = accel;
 581         dinfo->hwcursor = hwcursor;
 582
 583         if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
 584                 INF_MSG("Acceleration is not supported for the %s chipset.\n",
 585                         dinfo->name);
 586                 dinfo->accel = 0;
 587         }
 588
 589         /* Framebuffer parameters - Use all the stolen memory if >= vram */
 590         if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
 591                 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
 592                 dinfo->fbmem_gart = 0;
 593         } else {
 594                 dinfo->fb.size =  MB(vram);
 595                 dinfo->fbmem_gart = 1;
 596         }
 597
 598         /* Allocate space for the ring buffer and HW cursor if enabled. */
 599         if (dinfo->accel) {
 600                 dinfo->ring.size = RINGBUFFER_SIZE;
 601                 dinfo->ring_tail_mask = dinfo->ring.size - 1;
 602         }
 603         if (dinfo->hwcursor) {
 604                 dinfo->cursor.size = HW_CURSOR_SIZE;
 605         }
 606
 607         /* Use agpgart to manage the GATT */
 608         if (agp_backend_acquire()) {
 609                 ERR_MSG("cannot acquire agp\n");
 610                 cleanup(dinfo);
 611                 return -ENODEV;
 612         }
 613
 614         /* get the current gatt info */
 615         if (agp_copy_info(&gtt_info)) {
 616                 ERR_MSG("cannot get agp info\n");
 617                 agp_backend_release();
 618                 cleanup(dinfo);
 619                 return -ENODEV;
 620         }
 621
 622         /* set the mem offsets - set them after the already used pages */
 623         if (dinfo->accel) {
 624                 dinfo->ring.offset = (stolen_size >> 12)
 625                         + gtt_info.current_memory;
 626         }
 627         if (dinfo->hwcursor) {
 628                 dinfo->cursor.offset = (stolen_size >> 12) +
 629                         + gtt_info.current_memory + (dinfo->ring.size >> 12);
 630         }
 631         if (dinfo->fbmem_gart) {
 632                 dinfo->fb.offset = (stolen_size >> 12) +
 633                         + gtt_info.current_memory + (dinfo->ring.size >> 12)
 634                         + (dinfo->cursor.size >> 12);
 635         }
 636
 637         /* Allocate memories (which aren't stolen) */
 638         if (dinfo->accel) {
 639                 if (!(dinfo->gtt_ring_mem =
 640                       agp_allocate_memory(dinfo->ring.size >> 12,
 641                                           AGP_NORMAL_MEMORY))) {
 642                         ERR_MSG("cannot allocate ring buffer memory\n");
 643                         agp_backend_release();
 644                         cleanup(dinfo);
 645                         return -ENOMEM;
 646                 }
 647                 if (agp_bind_memory(dinfo->gtt_ring_mem,
 648                                     dinfo->ring.offset)) {
 649                         ERR_MSG("cannot bind ring buffer memory\n");
 650                         agp_backend_release();
 651                         cleanup(dinfo);
 652                         return -EBUSY;
 653                 }
 654                 dinfo->ring.physical = dinfo->aperture.physical
 655                         + (dinfo->ring.offset << 12);
 656                 dinfo->ring.virtual  = dinfo->aperture.virtual
 657                         + (dinfo->ring.offset << 12);
 658                 dinfo->ring_head = dinfo->ring.virtual;
 659         }
 660         if (dinfo->hwcursor) {
 661                 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
 662                         : AGP_NORMAL_MEMORY;
 663                 if (!(dinfo->gtt_cursor_mem =
 664                       agp_allocate_memory(dinfo->cursor.size >> 12,
 665                                           agp_memtype))) {
 666                         ERR_MSG("cannot allocate cursor memory\n");
 667                         agp_backend_release();
 668                         cleanup(dinfo);
 669                         return -ENOMEM;
 670                 }
 671                 if (agp_bind_memory(dinfo->gtt_cursor_mem,
 672                                     dinfo->cursor.offset)) {
 673                         ERR_MSG("cannot bind cursor memory\n");
 674                         agp_backend_release();
 675                         cleanup(dinfo);
 676                         return -EBUSY;
 677                 }
 678                 if (dinfo->mobile)
 679                         dinfo->cursor.physical
 680                                 = dinfo->gtt_cursor_mem->physical;
 681                 else
 682                         dinfo->cursor.physical = dinfo->aperture.physical
 683                                 + (dinfo->cursor.offset << 12);
 684                 dinfo->cursor.virtual = dinfo->aperture.virtual
 685                         + (dinfo->cursor.offset << 12);
 686         }
 687         if (dinfo->fbmem_gart) {
 688                 if (!(dinfo->gtt_fb_mem =
 689                       agp_allocate_memory(dinfo->fb.size >> 12,
 690                                           AGP_NORMAL_MEMORY))) {
 691                         WRN_MSG("cannot allocate framebuffer memory - use "
 692                                 "the stolen one\n");
 693                         dinfo->fbmem_gart = 0;
 694                 }
 695                 if (agp_bind_memory(dinfo->gtt_fb_mem,
 696                                     dinfo->fb.offset)) {
 697                         WRN_MSG("cannot bind framebuffer memory - use "
 698                                 "the stolen one\n");
 699                         dinfo->fbmem_gart = 0;
 700                 }
 701         }
 702
 703         /* update framebuffer memory parameters */
 704         if (!dinfo->fbmem_gart)
 705                 dinfo->fb.offset = 0;   /* starts at offset 0 */
 706         dinfo->fb.physical = dinfo->aperture.physical
 707                 + (dinfo->fb.offset << 12);
 708         dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
 709         dinfo->fb_start = dinfo->fb.offset << 12;
 710
 711         /* release agpgart */
 712         agp_backend_release();
 713
 714         if (mtrr)
 715                 set_mtrr(dinfo);
 716
 717         DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%x)\n",
 718                 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
 719                 (u32 __iomem ) dinfo->fb.virtual);
 720         DBG_MSG("MMIO: 0x%x/0x%x (0x%x)\n",
 721                 dinfo->mmio_base_phys, INTEL_REG_SIZE,
 722                 (u32 __iomem) dinfo->mmio_base);
 723         DBG_MSG("ring buffer: 0x%x/0x%x (0x%x)\n",
 724                 dinfo->ring.physical, dinfo->ring.size,
 725                 (u32 __iomem ) dinfo->ring.virtual);
 726         DBG_MSG("HW cursor: 0x%x/0x%x (0x%x) (offset 0x%x) (phys 0x%x)\n",
 727                 dinfo->cursor.physical, dinfo->cursor.size,
 728                 (u32 __iomem ) dinfo->cursor.virtual, dinfo->cursor.offset,
 729                 dinfo->cursor.physical);
 730
 731         DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
 732                 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
 733         DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
 734
 735         if (probeonly)
 736                 bailout(dinfo);
 737
 738         /*
 739          * Check if the LVDS port or any DVO ports are enabled.  If so,
 740          * don't allow mode switching
 741          */
 742         dvo = intelfbhw_check_non_crt(dinfo);
 743         if (dvo) {
 744                 dinfo->fixed_mode = 1;
 745                 WRN_MSG("Non-CRT device is enabled ( ");
 746                 i = 0;
 747                 while (dvo) {
 748                         if (dvo & 1) {
 749                                 s = intelfbhw_dvo_to_string(1 << i);
 750                                 if (s)
 751                                         printk("%s ", s);
 752                         }
 753                         dvo >>= 1;
 754                         ++i;
 755                 }
 756                 printk(").  Disabling mode switching.\n");
 757         }
 758
 759         if (bailearly == 1)
 760                 bailout(dinfo);
 761
 762         if (FIXED_MODE(dinfo) && ORIG_VIDEO_ISVGA != VIDEO_TYPE_VLFB) {
 763                 ERR_MSG("Video mode must be programmed at boot time.\n");
 764                 cleanup(dinfo);
 765                 return -ENODEV;
 766         }
 767
 768         if (bailearly == 2)
 769                 bailout(dinfo);
 770
 771         /* Initialise dinfo and related data. */
 772         /* If an initial mode was programmed at boot time, get its details. */
 773         if (ORIG_VIDEO_ISVGA == VIDEO_TYPE_VLFB)
 774                 get_initial_mode(dinfo);
 775
 776         if (bailearly == 3)
 777                 bailout(dinfo);
 778
 779         if (FIXED_MODE(dinfo)) {
 780                 /* remap fb address */
 781                 update_dinfo(dinfo, &dinfo->initial_var);
 782         }
 783
 784         if (bailearly == 4)
 785                 bailout(dinfo);
 786
 787
 788         if (intelfb_set_fbinfo(dinfo)) {
 789                 cleanup(dinfo);
 790                 return -ENODEV;
 791         }
 792
 793         if (bailearly == 5)
 794                 bailout(dinfo);
 795
 796         for (i = 0; i < 16; i++) {
 797                 j = color_table[i];
 798                 dinfo->palette[i].red = default_red[j];
 799                 dinfo->palette[i].green = default_grn[j];
 800                 dinfo->palette[i].blue = default_blu[j];
 801         }
 802
 803         if (bailearly == 6)
 804                 bailout(dinfo);
 805
 806         pci_set_drvdata(pdev, dinfo);
 807
 808         /* Save the initial register state. */
 809         i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
 810                                     bailearly > 6 ? bailearly - 6 : 0);
 811         if (i != 0) {
 812                 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
 813                 bailout(dinfo);
 814         }
 815
 816         intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
 817
 818         if (bailearly == 18)
 819                 bailout(dinfo);
 820
 821         /* Cursor initialisation */
 822         if (dinfo->hwcursor) {
 823                 intelfbhw_cursor_init(dinfo);
 824                 intelfbhw_cursor_reset(dinfo);
 825         }
 826
 827         if (bailearly == 19)
 828                 bailout(dinfo);
 829
 830         /* 2d acceleration init */
 831         if (dinfo->accel)
 832                 intelfbhw_2d_start(dinfo);
 833
 834         if (bailearly == 20)
 835                 bailout(dinfo);
 836
 837         if (noregister)
 838                 bailout(dinfo);
 839
 840         if (register_framebuffer(dinfo->info) < 0) {
 841                 ERR_MSG("Cannot register framebuffer.\n");
 842                 cleanup(dinfo);
 843                 return -ENODEV;
 844         }
 845
 846         dinfo->registered = 1;
 847
 848         return 0;
 849
 850 err_out_pixmap:
 851         fb_dealloc_cmap(&info->cmap);
 852 err_out_cmap:
 853         framebuffer_release(info);
 854         return -ENODEV;
 855 }
 856
 857 static void __devexit
 858 intelfb_pci_unregister(struct pci_dev *pdev)
 859 {
 860         struct intelfb_info *dinfo = pci_get_drvdata(pdev);
 861
 862         DBG_MSG("intelfb_pci_unregister\n");
 863
 864         if (!dinfo)
 865                 return;
 866
 867         cleanup(dinfo);
 868
 869         pci_set_drvdata(pdev, NULL);
 870 }
 871
 872 /***************************************************************
 873  *                       helper functions                      *
 874  ***************************************************************/
 875
 876 int __inline__
 877 intelfb_var_to_depth(const struct fb_var_screeninfo *var)
 878 {
 879         DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
 880                 var->bits_per_pixel, var->green.length);
 881
 882         switch (var->bits_per_pixel) {
 883         case 16:
 884                 return (var->green.length == 6) ? 16 : 15;
 885         case 32:
 886                 return 24;
 887         default:
 888                 return var->bits_per_pixel;
 889         }
 890 }
 891
 892
 893 static __inline__ int
 894 var_to_refresh(const struct fb_var_screeninfo *var)
 895 {
 896         int xtot = var->xres + var->left_margin + var->right_margin +
 897                    var->hsync_len;
 898         int ytot = var->yres + var->upper_margin + var->lower_margin +
 899                    var->vsync_len;
 900
 901         return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
 902 }
 903
 904 /***************************************************************
 905  *                Various intialisation functions              *
 906  ***************************************************************/
 907
 908 static void __devinit
 909 get_initial_mode(struct intelfb_info *dinfo)
 910 {
 911         struct fb_var_screeninfo *var;
 912         int xtot, ytot;
 913
 914         DBG_MSG("get_initial_mode\n");
 915
 916         dinfo->initial_vga = 1;
 917         dinfo->initial_fb_base = screen_info.lfb_base;
 918         dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
 919         dinfo->initial_pitch = screen_info.lfb_linelength;
 920
 921         var = &dinfo->initial_var;
 922         memset(var, 0, sizeof(*var));
 923         var->xres = screen_info.lfb_width;
 924         var->yres = screen_info.lfb_height;
 925         var->bits_per_pixel = screen_info.lfb_depth;
 926         switch (screen_info.lfb_depth) {
 927         case 15:
 928                 var->bits_per_pixel = 16;
 929                 break;
 930         case 24:
 931                 var->bits_per_pixel = 32;
 932                 break;
 933         }
 934
 935         DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
 936                 dinfo->initial_fb_base, dinfo->initial_video_ram,
 937                 BtoKB(dinfo->initial_video_ram));
 938
 939         DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
 940                 var->xres, var->yres, var->bits_per_pixel,
 941                 dinfo->initial_pitch);
 942
 943         /* Dummy timing values (assume 60Hz) */
 944         var->left_margin = (var->xres / 8) & 0xf8;
 945         var->right_margin = 32;
 946         var->upper_margin = 16;
 947         var->lower_margin = 4;
 948         var->hsync_len = (var->xres / 8) & 0xf8;
 949         var->vsync_len = 4;
 950
 951         xtot = var->xres + var->left_margin +
 952                 var->right_margin + var->hsync_len;
 953         ytot = var->yres + var->upper_margin +
 954                 var->lower_margin + var->vsync_len;
 955         var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
 956
 957         var->height = -1;
 958         var->width = -1;
 959
 960         if (var->bits_per_pixel > 8) {
 961                 var->red.offset = screen_info.red_pos;
 962                 var->red.length = screen_info.red_size;
 963                 var->green.offset = screen_info.green_pos;
 964                 var->green.length = screen_info.green_size;
 965                 var->blue.offset = screen_info.blue_pos;
 966                 var->blue.length = screen_info.blue_size;
 967                 var->transp.offset = screen_info.rsvd_pos;
 968                 var->transp.length = screen_info.rsvd_size;
 969         } else {
 970                 var->red.length = 8;
 971                 var->green.length = 8;
 972                 var->blue.length = 8;
 973         }
 974 }
 975
 976 static int __devinit
 977 intelfb_init_var(struct intelfb_info *dinfo)
 978 {
 979         struct fb_var_screeninfo *var;
 980         int msrc = 0;
 981
 982         DBG_MSG("intelfb_init_var\n");
 983
 984         var = &dinfo->info->var;
 985         if (FIXED_MODE(dinfo)) {
 986                 memcpy(var, &dinfo->initial_var,
 987                        sizeof(struct fb_var_screeninfo));
 988                 msrc = 5;
 989         } else {
 990                 if (mode) {
 991                         msrc = fb_find_mode(var, dinfo->info, mode,
 992                                             NULL, 0, NULL, 0);
 993                         if (msrc)
 994                                 msrc |= 8;
 995                 }
 996                 if (!msrc) {
 997                         msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
 998                                             NULL, 0, NULL, 0);
 999                 }
1000         }
1001
1002         if (!msrc) {
1003                 ERR_MSG("Cannot find a suitable video mode.\n");
1004                 return 1;
1005         }
1006
1007         INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1008                 var->bits_per_pixel, var_to_refresh(var));
1009
1010         DBG_MSG("Initial video mode is from %d.\n", msrc);
1011
1012 #if ALLOCATE_FOR_PANNING
1013         /* Allow use of half of the video ram for panning */
1014         var->xres_virtual = var->xres;
1015         var->yres_virtual =
1016                 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1017         if (var->yres_virtual < var->yres)
1018                 var->yres_virtual = var->yres;
1019 #else
1020         var->yres_virtual = var->yres;
1021 #endif
1022
1023         if (dinfo->accel)
1024                 var->accel_flags |= FB_ACCELF_TEXT;
1025         else
1026                 var->accel_flags &= ~FB_ACCELF_TEXT;
1027
1028         return 0;
1029 }
1030
1031 static int __devinit
1032 intelfb_set_fbinfo(struct intelfb_info *dinfo)
1033 {
1034         struct fb_info *info = dinfo->info;
1035
1036         DBG_MSG("intelfb_set_fbinfo\n");
1037
1038         info->flags = FBINFO_FLAG_DEFAULT;
1039         info->fbops = &intel_fb_ops;
1040         info->pseudo_palette = dinfo->pseudo_palette;
1041
1042         info->pixmap.size = 64*1024;
1043         info->pixmap.buf_align = 8;
1044         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1045
1046         if (intelfb_init_var(dinfo))
1047                 return 1;
1048
1049         info->pixmap.scan_align = 1;
1050
1051         update_dinfo(dinfo, &info->var);
1052
1053         return 0;
1054 }
1055
1056 /* Update dinfo to match the active video mode. */
1057 static void
1058 update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var)
1059 {
1060         DBG_MSG("update_dinfo\n");
1061
1062         dinfo->bpp = var->bits_per_pixel;
1063         dinfo->depth = intelfb_var_to_depth(var);
1064         dinfo->xres = var->xres;
1065         dinfo->yres = var->xres;
1066         dinfo->pixclock = var->pixclock;
1067
1068         intelfb_get_fix(&dinfo->info->fix, dinfo->info);
1069
1070         switch (dinfo->bpp) {
1071         case 8:
1072                 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1073                 dinfo->pitch = var->xres_virtual;
1074                 break;
1075         case 16:
1076                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1077                 dinfo->pitch = var->xres_virtual * 2;
1078                 break;
1079         case 32:
1080                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1081                 dinfo->pitch = var->xres_virtual * 4;
1082                 break;
1083         }
1084
1085         /* Make sure the line length is a aligned correctly. */
1086         dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1087
1088         if (FIXED_MODE(dinfo))
1089                 dinfo->pitch = dinfo->initial_pitch;
1090
1091         dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1092         dinfo->info->fix.line_length = dinfo->pitch;
1093         dinfo->info->fix.visual = dinfo->visual;
1094 }
1095
1096 /* fbops functions */
1097
1098 static int
1099 intelfb_get_fix(struct fb_fix_screeninfo *fix, struct fb_info *info)
1100 {
1101         struct intelfb_info *dinfo = GET_DINFO(info);
1102
1103         DBG_MSG("intelfb_get_fix\n");
1104
1105         memset(fix, 0, sizeof(*fix));
1106         strcpy(fix->id, dinfo->name);
1107         fix->smem_start = dinfo->fb.physical;
1108         fix->smem_len = dinfo->fb.size;
1109         fix->type = FB_TYPE_PACKED_PIXELS;
1110         fix->type_aux = 0;
1111         fix->visual = dinfo->visual;
1112         fix->xpanstep = 8;
1113         fix->ypanstep = 1;
1114         fix->ywrapstep = 0;
1115         fix->line_length = dinfo->pitch;
1116         fix->mmio_start = dinfo->mmio_base_phys;
1117         fix->mmio_len = INTEL_REG_SIZE;
1118         fix->accel = FB_ACCEL_I830;
1119         return 0;
1120 }
1121
1122 /***************************************************************
1123  *                       fbdev interface                       *
1124  ***************************************************************/
1125
1126 static int
1127 intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1128 {
1129         int change_var = 0;
1130         struct fb_var_screeninfo v;
1131         struct intelfb_info *dinfo;
1132         static int first = 1;
1133
1134         DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1135
1136         dinfo = GET_DINFO(info);
1137
1138         if (intelfbhw_validate_mode(dinfo, var) != 0)
1139                 return -EINVAL;
1140
1141         v = *var;
1142
1143         /* Check for a supported bpp. */
1144         if (v.bits_per_pixel <= 8) {
1145                 v.bits_per_pixel = 8;
1146         } else if (v.bits_per_pixel <= 16) {
1147                 if (v.bits_per_pixel == 16)
1148                         v.green.length = 6;
1149                 v.bits_per_pixel = 16;
1150         } else if (v.bits_per_pixel <= 32) {
1151                 v.bits_per_pixel = 32;
1152         } else
1153                 return -EINVAL;
1154
1155         change_var = ((info->var.xres != var->xres) ||
1156                       (info->var.yres != var->yres) ||
1157                       (info->var.xres_virtual != var->xres_virtual) ||
1158                       (info->var.yres_virtual != var->yres_virtual) ||
1159                       (info->var.bits_per_pixel != var->bits_per_pixel) ||
1160                       memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1161                       memcmp(&info->var.green, &var->green,
1162                              sizeof(var->green)) ||
1163                       memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1164
1165         if (FIXED_MODE(dinfo) &&
1166             (change_var ||
1167              var->yres_virtual > dinfo->initial_var.yres_virtual ||
1168              var->yres_virtual < dinfo->initial_var.yres ||
1169              var->xoffset || var->nonstd)) {
1170                 if (first) {
1171                         ERR_MSG("Changing the video mode is not supported.\n");
1172                         first = 0;
1173                 }
1174                 return -EINVAL;
1175         }
1176
1177         switch (intelfb_var_to_depth(&v)) {
1178         case 8:
1179                 v.red.offset = v.green.offset = v.blue.offset = 0;
1180                 v.red.length = v.green.length = v.blue.length = 8;
1181                 v.transp.offset = v.transp.length = 0;
1182                 break;
1183         case 15:
1184                 v.red.offset = 10;
1185                 v.green.offset = 5;
1186                 v.blue.offset = 0;
1187                 v.red.length = v.green.length = v.blue.length = 5;
1188                 v.transp.offset = v.transp.length = 0;
1189                 break;
1190         case 16:
1191                 v.red.offset = 11;
1192                 v.green.offset = 5;
1193                 v.blue.offset = 0;
1194                 v.red.length = 5;
1195                 v.green.length = 6;
1196                 v.blue.length = 5;
1197                 v.transp.offset = v.transp.length = 0;
1198                 break;
1199         case 24:
1200                 v.red.offset = 16;
1201                 v.green.offset = 8;
1202                 v.blue.offset = 0;
1203                 v.red.length = v.green.length = v.blue.length = 8;
1204                 v.transp.offset = v.transp.length = 0;
1205                 break;
1206         case 32:
1207                 v.red.offset = 16;
1208                 v.green.offset = 8;
1209                 v.blue.offset = 0;
1210                 v.red.length = v.green.length = v.blue.length = 8;
1211                 v.transp.offset = 24;
1212                 v.transp.length = 8;
1213                 break;
1214         }
1215
1216         if (v.xoffset < 0)
1217                 v.xoffset = 0;
1218         if (v.yoffset < 0)
1219                 v.yoffset = 0;
1220
1221         if (v.xoffset > v.xres_virtual - v.xres)
1222                 v.xoffset = v.xres_virtual - v.xres;
1223         if (v.yoffset > v.yres_virtual - v.yres)
1224                 v.yoffset = v.yres_virtual - v.yres;
1225
1226         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1227                           v.transp.msb_right = 0;
1228
1229         *var = v;
1230
1231         return 0;
1232 }
1233
1234 static int
1235 intelfb_set_par(struct fb_info *info)
1236 {
1237         struct intelfb_hwstate hw;
1238
1239         struct intelfb_info *dinfo = GET_DINFO(info);
1240
1241         if (FIXED_MODE(dinfo)) {
1242                 ERR_MSG("Changing the video mode is not supported.\n");
1243                 return -EINVAL;
1244         }
1245
1246         DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1247                 info->var.yres, info->var.bits_per_pixel);
1248
1249         intelfb_blank(FB_BLANK_POWERDOWN, info);
1250
1251         if (dinfo->accel)
1252                 intelfbhw_2d_stop(dinfo);
1253
1254         hw = dinfo->save_state;
1255         if (intelfbhw_mode_to_hw(dinfo, &hw, &info->var))
1256                 return -EINVAL;
1257         if (intelfbhw_program_mode(dinfo, &hw, 0))
1258                 return -EINVAL;
1259
1260 #if REGDUMP > 0
1261         intelfbhw_read_hw_state(dinfo, &hw, 0);
1262         intelfbhw_print_hw_state(dinfo, &hw);
1263 #endif
1264
1265         update_dinfo(dinfo, &info->var);
1266
1267         if (dinfo->accel)
1268                 intelfbhw_2d_start(dinfo);
1269
1270         intelfb_pan_display(&info->var, info);
1271
1272         intelfb_blank(FB_BLANK_UNBLANK, info);
1273
1274         if (ACCEL(dinfo, info)) {
1275                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1276                 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1277                 FBINFO_HWACCEL_IMAGEBLIT;
1278         } else {
1279                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1280         }
1281         return 0;
1282 }
1283
1284 static int
1285 intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1286                   unsigned blue, unsigned transp, struct fb_info *info)
1287 {
1288         struct intelfb_info *dinfo = GET_DINFO(info);
1289
1290 #if VERBOSE > 0
1291         DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1292 #endif
1293
1294         if (regno > 255)
1295                 return 1;
1296
1297         switch (dinfo->depth) {
1298         case 8:
1299                 {
1300                         red >>= 8;
1301                         green >>= 8;
1302                         blue >>= 8;
1303
1304                         dinfo->palette[regno].red = red;
1305                         dinfo->palette[regno].green = green;
1306                         dinfo->palette[regno].blue = blue;
1307
1308                         intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1309                                             transp);
1310                 }
1311                 break;
1312         case 15:
1313                 dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1314                                                ((green & 0xf800) >>  6) |
1315                                                ((blue & 0xf800) >> 11);
1316                 break;
1317         case 16:
1318                 dinfo->pseudo_palette[regno] = (red & 0xf800) |
1319                                                ((green & 0xfc00) >>  5) |
1320                                                ((blue  & 0xf800) >> 11);
1321                 break;
1322         case 24:
1323                 dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1324                                                (green & 0xff00) |
1325                                                ((blue  & 0xff00) >> 8);
1326                 break;
1327         }
1328         return 0;
1329 }
1330
1331 static int
1332 intelfb_blank(int blank, struct fb_info *info)
1333 {
1334         intelfbhw_do_blank(blank, info);
1335         return 0;
1336 }
1337
1338 static int
1339 intelfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1340 {
1341         intelfbhw_pan_display(var, info);
1342         return 0;
1343 }
1344
1345 /* When/if we have our own ioctls. */
1346 static int
1347 intelfb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
1348               unsigned long arg, struct fb_info *info)
1349 {
1350         int retval = 0;
1351
1352         return retval;
1353 }
1354
1355 static void
1356 intelfb_fillrect (struct fb_info *info, const struct fb_fillrect *rect)
1357 {
1358         struct intelfb_info *dinfo = GET_DINFO(info);
1359         u32 rop, color;
1360
1361 #if VERBOSE > 0
1362         DBG_MSG("intelfb_fillrect\n");
1363 #endif
1364
1365         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1366                 return cfb_fillrect(info, rect);
1367
1368         if (rect->rop == ROP_COPY)
1369                 rop = PAT_ROP_GXCOPY;
1370         else // ROP_XOR
1371                 rop = PAT_ROP_GXXOR;
1372
1373         if (dinfo->depth != 8)
1374                 color = dinfo->pseudo_palette[rect->color];
1375         else
1376                 color = rect->color;
1377
1378         intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1379                               rect->width, rect->height, color,
1380                               dinfo->pitch, info->var.bits_per_pixel,
1381                               rop);
1382 }
1383
1384 static void
1385 intelfb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
1386 {
1387         struct intelfb_info *dinfo = GET_DINFO(info);
1388
1389 #if VERBOSE > 0
1390         DBG_MSG("intelfb_copyarea\n");
1391 #endif
1392
1393         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1394                 return cfb_copyarea(info, region);
1395
1396         intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1397                             region->dy, region->width, region->height,
1398                             dinfo->pitch, info->var.bits_per_pixel);
1399 }
1400
1401 static void
1402 intelfb_imageblit(struct fb_info *info, const struct fb_image *image)
1403 {
1404         struct intelfb_info *dinfo = GET_DINFO(info);
1405         u32 fgcolor, bgcolor;
1406
1407 #if VERBOSE > 0
1408         DBG_MSG("intelfb_imageblit\n");
1409 #endif
1410
1411         if (!ACCEL(dinfo, info) || dinfo->depth == 4
1412             || image->depth != 1)
1413                 return cfb_imageblit(info, image);
1414
1415         if (dinfo->depth != 8) {
1416                 fgcolor = dinfo->pseudo_palette[image->fg_color];
1417                 bgcolor = dinfo->pseudo_palette[image->bg_color];
1418         } else {
1419                 fgcolor = image->fg_color;
1420                 bgcolor = image->bg_color;
1421         }
1422
1423         if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1424                                     image->height, image->data,
1425                                     image->dx, image->dy,
1426                                     dinfo->pitch, info->var.bits_per_pixel))
1427                 return cfb_imageblit(info, image);
1428 }
1429
1430 static int
1431 intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1432 {
1433         struct intelfb_info *dinfo = GET_DINFO(info);
1434
1435 #if VERBOSE > 0
1436         DBG_MSG("intelfb_cursor\n");
1437 #endif
1438
1439         if (!dinfo->hwcursor)
1440                 return soft_cursor(info, cursor);
1441
1442         intelfbhw_cursor_hide(dinfo);
1443
1444         /* If XFree killed the cursor - restore it */
1445         if (INREG(CURSOR_A_BASEADDR) != dinfo->cursor.offset << 12) {
1446                 u32 fg, bg;
1447
1448                 DBG_MSG("the cursor was killed - restore it !!\n");
1449                 DBG_MSG("size %d, %d   pos %d, %d\n",
1450                         cursor->image.width, cursor->image.height,
1451                         cursor->image.dx, cursor->image.dy);
1452
1453                 intelfbhw_cursor_init(dinfo);
1454                 intelfbhw_cursor_reset(dinfo);
1455                 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1456                                         cursor->image.dy);
1457
1458                 if (dinfo->depth != 8) {
1459                         fg =dinfo->pseudo_palette[cursor->image.fg_color];
1460                         bg =dinfo->pseudo_palette[cursor->image.bg_color];
1461                 } else {
1462                         fg = cursor->image.fg_color;
1463                         bg = cursor->image.bg_color;
1464                 }
1465                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1466                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1467                                       cursor->image.height,
1468                                       dinfo->cursor_src);
1469
1470                 if (cursor->enable)
1471                         intelfbhw_cursor_show(dinfo);
1472                 return 0;
1473         }
1474
1475         if (cursor->set & FB_CUR_SETPOS) {
1476                 u32 dx, dy;
1477
1478                 dx = cursor->image.dx - info->var.xoffset;
1479                 dy = cursor->image.dy - info->var.yoffset;
1480
1481                 intelfbhw_cursor_setpos(dinfo, dx, dy);
1482         }
1483
1484         if (cursor->set & FB_CUR_SETSIZE) {
1485                 if (cursor->image.width > 64 || cursor->image.height > 64)
1486                         return -ENXIO;
1487
1488                 intelfbhw_cursor_reset(dinfo);
1489         }
1490
1491         if (cursor->set & FB_CUR_SETCMAP) {
1492                 u32 fg, bg;
1493
1494                 if (dinfo->depth != 8) {
1495                         fg = dinfo->pseudo_palette[cursor->image.fg_color];
1496                         bg = dinfo->pseudo_palette[cursor->image.bg_color];
1497                 } else {
1498                         fg = cursor->image.fg_color;
1499                         bg = cursor->image.bg_color;
1500                 }
1501
1502                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1503         }
1504
1505         if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1506                 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1507                 u32 size = s_pitch * cursor->image.height;
1508                 u8 *dat = (u8 *) cursor->image.data;
1509                 u8 *msk = (u8 *) cursor->mask;
1510                 u8 src[64];
1511                 u32 i;
1512
1513                 if (cursor->image.depth != 1)
1514                         return -ENXIO;
1515
1516                 switch (cursor->rop) {
1517                 case ROP_XOR:
1518                         for (i = 0; i < size; i++)
1519                                 src[i] = dat[i] ^ msk[i];
1520                         break;
1521                 case ROP_COPY:
1522                 default:
1523                         for (i = 0; i < size; i++)
1524                                 src[i] = dat[i] & msk[i];
1525                         break;
1526                 }
1527
1528                 /* save the bitmap to restore it when XFree will
1529                    make the cursor dirty */
1530                 memcpy(dinfo->cursor_src, src, size);
1531
1532                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1533                                       cursor->image.height, src);
1534         }
1535
1536         if (cursor->enable)
1537                 intelfbhw_cursor_show(dinfo);
1538
1539         return 0;
1540 }
1541
1542 static int
1543 intelfb_sync(struct fb_info *info)
1544 {
1545         struct intelfb_info *dinfo = GET_DINFO(info);
1546
1547 #if VERBOSE > 0
1548         DBG_MSG("intelfb_sync\n");
1549 #endif
1550
1551         if (dinfo->ring_lockup)
1552                 return 0;
1553
1554         intelfbhw_do_sync(dinfo);
1555         return 0;
1556 }
1557