drivers/video/intelfb/intelfbdrv.c

   1 /*
   2  * intelfb
   3  *
   4  * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM/
   5  * 945G/945GM integrated graphics chips.
   6  *
   7  * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org>
   8  *                   2004 Sylvain Meyer
   9  *                   2006 David Airlie
  10  *
  11  * This driver consists of two parts.  The first part (intelfbdrv.c) provides
  12  * the basic fbdev interfaces, is derived in part from the radeonfb and
  13  * vesafb drivers, and is covered by the GPL.  The second part (intelfbhw.c)
  14  * provides the code to program the hardware.  Most of it is derived from
  15  * the i810/i830 XFree86 driver.  The HW-specific code is covered here
  16  * under a dual license (GPL and MIT/XFree86 license).
  17  *
  18  * Author: David Dawes
  19  *
  20  */
  21
  22 /* $DHD: intelfb/intelfbdrv.c,v 1.20 2003/06/27 15:17:40 dawes Exp $ */
  23
  24 /*
  25  * Changes:
  26  *    01/2003 - Initial driver (0.1.0), no mode switching, no acceleration.
  27  *              This initial version is a basic core that works a lot like
  28  *              the vesafb driver.  It must be built-in to the kernel,
  29  *              and the initial video mode must be set with vga=XXX at
  30  *              boot time.  (David Dawes)
  31  *
  32  *    01/2003 - Version 0.2.0: Mode switching added, colormap support
  33  *              implemented, Y panning, and soft screen blanking implemented.
  34  *              No acceleration yet.  (David Dawes)
  35  *
  36  *    01/2003 - Version 0.3.0: fbcon acceleration support added.  Module
  37  *              option handling added.  (David Dawes)
  38  *
  39  *    01/2003 - Version 0.4.0: fbcon HW cursor support added.  (David Dawes)
  40  *
  41  *    01/2003 - Version 0.4.1: Add auto-generation of built-in modes.
  42  *              (David Dawes)
  43  *
  44  *    02/2003 - Version 0.4.2: Add check for active non-CRT devices, and
  45  *              mode validation checks.  (David Dawes)
  46  *
  47  *    02/2003 - Version 0.4.3: Check when the VC is in graphics mode so that
  48  *              acceleration is disabled while an XFree86 server is running.
  49  *              (David Dawes)
  50  *
  51  *    02/2003 - Version 0.4.4: Monitor DPMS support.  (David Dawes)
  52  *
  53  *    02/2003 - Version 0.4.5: Basic XFree86 + fbdev working.  (David Dawes)
  54  *
  55  *    02/2003 - Version 0.5.0: Modify to work with the 2.5.32 kernel as well
  56  *              as 2.4.x kernels.  (David Dawes)
  57  *
  58  *    02/2003 - Version 0.6.0: Split out HW-specifics into a separate file.
  59  *              (David Dawes)
  60  *
  61  *    02/2003 - Version 0.7.0: Test on 852GM/855GM.  Acceleration and HW
  62  *              cursor are disabled on this platform.  (David Dawes)
  63  *
  64  *    02/2003 - Version 0.7.1: Test on 845G.  Acceleration is disabled
  65  *              on this platform.  (David Dawes)
  66  *
  67  *    02/2003 - Version 0.7.2: Test on 830M.  Acceleration and HW
  68  *              cursor are disabled on this platform.  (David Dawes)
  69  *
  70  *    02/2003 - Version 0.7.3: Fix 8-bit modes for mobile platforms
  71  *              (David Dawes)
  72  *
  73  *    02/2003 - Version 0.7.4: Add checks for FB and FBCON_HAS_CFB* configured
  74  *              in the kernel, and add mode bpp verification and default
  75  *              bpp selection based on which FBCON_HAS_CFB* are configured.
  76  *              (David Dawes)
  77  *
  78  *    02/2003 - Version 0.7.5: Add basic package/install scripts based on the
  79  *              DRI packaging scripts.  (David Dawes)
  80  *
  81  *    04/2003 - Version 0.7.6: Fix typo that affects builds with SMP-enabled
  82  *              kernels.  (David Dawes, reported by Anupam).
  83  *
  84  *    06/2003 - Version 0.7.7:
  85  *              Fix Makefile.kernel build problem (Tsutomu Yasuda).
  86  *              Fix mis-placed #endif (2.4.21 kernel).
  87  *
  88  *    09/2004 - Version 0.9.0 - by Sylvain Meyer
  89  *              Port to linux 2.6 kernel fbdev
  90  *              Fix HW accel and HW cursor on i845G
  91  *              Use of agpgart for fb memory reservation
  92  *              Add mtrr support
  93  *
  94  *    10/2004 - Version 0.9.1
  95  *              Use module_param instead of old MODULE_PARM
  96  *              Some cleanup
  97  *
  98  *    11/2004 - Version 0.9.2
  99  *              Add vram option to reserve more memory than stolen by BIOS
 100  *              Fix intelfbhw_pan_display typo
 101  *              Add __initdata annotations
 102  *
 103  * TODO:
 104  *
 105  *
 106  * Wish List:
 107  *
 108  *
 109  */
 110
 111 #include <linux/config.h>
 112 #include <linux/module.h>
 113 #include <linux/kernel.h>
 114 #include <linux/errno.h>
 115 #include <linux/string.h>
 116 #include <linux/mm.h>
 117 #include <linux/tty.h>
 118 #include <linux/slab.h>
 119 #include <linux/delay.h>
 120 #include <linux/fb.h>
 121 #include <linux/ioport.h>
 122 #include <linux/init.h>
 123 #include <linux/pci.h>
 124 #include <linux/vmalloc.h>
 125 #include <linux/pagemap.h>
 126
 127 #include <asm/io.h>
 128
 129 #ifdef CONFIG_MTRR
 130 #include <asm/mtrr.h>
 131 #endif
 132
 133 #include "intelfb.h"
 134 #include "intelfbhw.h"
 135 #include "../edid.h"
 136
 137 static void __devinit get_initial_mode(struct intelfb_info *dinfo);
 138 static void update_dinfo(struct intelfb_info *dinfo,
 139                          struct fb_var_screeninfo *var);
 140 static int intelfb_check_var(struct fb_var_screeninfo *var,
 141                              struct fb_info *info);
 142 static int intelfb_set_par(struct fb_info *info);
 143 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 144                              unsigned blue, unsigned transp,
 145                              struct fb_info *info);
 146
 147 static int intelfb_blank(int blank, struct fb_info *info);
 148 static int intelfb_pan_display(struct fb_var_screeninfo *var,
 149                                struct fb_info *info);
 150
 151 static void intelfb_fillrect(struct fb_info *info,
 152                              const struct fb_fillrect *rect);
 153 static void intelfb_copyarea(struct fb_info *info,
 154                              const struct fb_copyarea *region);
 155 static void intelfb_imageblit(struct fb_info *info,
 156                               const struct fb_image *image);
 157 static int intelfb_cursor(struct fb_info *info,
 158                            struct fb_cursor *cursor);
 159
 160 static int intelfb_sync(struct fb_info *info);
 161
 162 static int intelfb_ioctl(struct fb_info *info,
 163                          unsigned int cmd, unsigned long arg);
 164
 165 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
 166                                           const struct pci_device_id *ent);
 167 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
 168 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
 169
 170 /*
 171  * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
 172  * mobile chipsets from being registered.
 173  */
 174 #if DETECT_VGA_CLASS_ONLY
 175 #define INTELFB_CLASS_MASK ~0 << 8
 176 #else
 177 #define INTELFB_CLASS_MASK 0
 178 #endif
 179
 180 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
 181         { 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 },
 182         { 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 },
 183         { 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 },
 184         { 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 },
 185         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915G },
 186         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915GM },
 187         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945G },
 188         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GM },
 189         { 0, }
 190 };
 191
 192 /* Global data */
 193 static int num_registered = 0;
 194
 195 /* fb ops */
 196 static struct fb_ops intel_fb_ops = {
 197         .owner =                THIS_MODULE,
 198         .fb_check_var =         intelfb_check_var,
 199         .fb_set_par =           intelfb_set_par,
 200         .fb_setcolreg =         intelfb_setcolreg,
 201         .fb_blank =             intelfb_blank,
 202         .fb_pan_display =       intelfb_pan_display,
 203         .fb_fillrect  =         intelfb_fillrect,
 204         .fb_copyarea  =         intelfb_copyarea,
 205         .fb_imageblit =         intelfb_imageblit,
 206         .fb_cursor =            intelfb_cursor,
 207         .fb_sync =              intelfb_sync,
 208         .fb_ioctl =             intelfb_ioctl
 209 };
 210
 211 /* PCI driver module table */
 212 static struct pci_driver intelfb_driver = {
 213         .name =         "intelfb",
 214         .id_table =     intelfb_pci_table,
 215         .probe =        intelfb_pci_register,
 216         .remove =       __devexit_p(intelfb_pci_unregister)
 217 };
 218
 219 /* Module description/parameters */
 220 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
 221               "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
 222 MODULE_DESCRIPTION(
 223         "Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS " chipsets");
 224 MODULE_LICENSE("Dual BSD/GPL");
 225 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
 226
 227 static int accel        = 1;
 228 static int vram         = 4;
 229 static int hwcursor     = 0;
 230 static int mtrr         = 1;
 231 static int fixed        = 0;
 232 static int noinit       = 0;
 233 static int noregister   = 0;
 234 static int probeonly    = 0;
 235 static int idonly       = 0;
 236 static int bailearly    = 0;
 237 static int voffset      = 48;
 238 static char *mode       = NULL;
 239
 240 module_param(accel, bool, S_IRUGO);
 241 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
 242 module_param(vram, int, S_IRUGO);
 243 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
 244 module_param(voffset, int, S_IRUGO);
 245 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
 246 module_param(hwcursor, bool, S_IRUGO);
 247 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
 248 module_param(mtrr, bool, S_IRUGO);
 249 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
 250 module_param(fixed, bool, S_IRUGO);
 251 MODULE_PARM_DESC(fixed, "Disable mode switching");
 252 module_param(noinit, bool, 0);
 253 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
 254 module_param(noregister, bool, 0);
 255 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
 256 module_param(probeonly, bool, 0);
 257 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
 258 module_param(idonly, bool, 0);
 259 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
 260 module_param(bailearly, bool, 0);
 261 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
 262 module_param(mode, charp, S_IRUGO);
 263 MODULE_PARM_DESC(mode,
 264                  "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
 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) + 1, 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 static 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 static int __init
 377 intelfb_init(void)
 378 {
 379 #ifndef MODULE
 380         char *option = NULL;
 381 #endif
 382
 383         DBG_MSG("intelfb_init\n");
 384
 385         INF_MSG("Framebuffer driver for "
 386                 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
 387         INF_MSG("Version " INTELFB_VERSION "\n");
 388
 389         if (idonly)
 390                 return -ENODEV;
 391
 392 #ifndef MODULE
 393         if (fb_get_options("intelfb", &option))
 394                 return -ENODEV;
 395         intelfb_setup(option);
 396 #endif
 397
 398         return pci_register_driver(&intelfb_driver);
 399 }
 400
 401 static void __exit
 402 intelfb_exit(void)
 403 {
 404         DBG_MSG("intelfb_exit\n");
 405         pci_unregister_driver(&intelfb_driver);
 406 }
 407
 408 module_init(intelfb_init);
 409 module_exit(intelfb_exit);
 410
 411 /***************************************************************
 412  *                     mtrr support functions                  *
 413  ***************************************************************/
 414
 415 #ifdef CONFIG_MTRR
 416 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
 417 {
 418         dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
 419                                    dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
 420         if (dinfo->mtrr_reg < 0) {
 421                 ERR_MSG("unable to set MTRR\n");
 422                 return;
 423         }
 424         dinfo->has_mtrr = 1;
 425 }
 426 static inline void unset_mtrr(struct intelfb_info *dinfo)
 427 {
 428         if (dinfo->has_mtrr)
 429                 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
 430                          dinfo->aperture.size);
 431 }
 432 #else
 433 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
 434
 435 #define unset_mtrr(x) do { } while (0)
 436 #endif /* CONFIG_MTRR */
 437
 438 /***************************************************************
 439  *                        driver init / cleanup                *
 440  ***************************************************************/
 441
 442 static void
 443 cleanup(struct intelfb_info *dinfo)
 444 {
 445         DBG_MSG("cleanup\n");
 446
 447         if (!dinfo)
 448                 return;
 449
 450         fb_dealloc_cmap(&dinfo->info->cmap);
 451         kfree(dinfo->info->pixmap.addr);
 452
 453         if (dinfo->registered)
 454                 unregister_framebuffer(dinfo->info);
 455
 456         unset_mtrr(dinfo);
 457
 458         if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
 459                 agp_unbind_memory(dinfo->gtt_fb_mem);
 460                 agp_free_memory(dinfo->gtt_fb_mem);
 461         }
 462         if (dinfo->gtt_cursor_mem) {
 463                 agp_unbind_memory(dinfo->gtt_cursor_mem);
 464                 agp_free_memory(dinfo->gtt_cursor_mem);
 465         }
 466         if (dinfo->gtt_ring_mem) {
 467                 agp_unbind_memory(dinfo->gtt_ring_mem);
 468                 agp_free_memory(dinfo->gtt_ring_mem);
 469         }
 470
 471         if (dinfo->mmio_base)
 472                 iounmap((void __iomem *)dinfo->mmio_base);
 473         if (dinfo->aperture.virtual)
 474                 iounmap((void __iomem *)dinfo->aperture.virtual);
 475
 476         if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
 477                 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
 478         if (dinfo->flag & INTELFB_FB_ACQUIRED)
 479                 release_mem_region(dinfo->aperture.physical,
 480                                    dinfo->aperture.size);
 481         framebuffer_release(dinfo->info);
 482 }
 483
 484 #define bailout(dinfo) do {                                             \
 485         DBG_MSG("bailout\n");                                           \
 486         cleanup(dinfo);                                                 \
 487         INF_MSG("Not going to register framebuffer, exiting...\n");     \
 488         return -ENODEV;                                                 \
 489 } while (0)
 490
 491
 492 static int __devinit
 493 intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
 494 {
 495         struct fb_info *info;
 496         struct intelfb_info *dinfo;
 497         int i, err, dvo;
 498         int aperture_size, stolen_size;
 499         struct agp_kern_info gtt_info;
 500         int agp_memtype;
 501         const char *s;
 502         struct agp_bridge_data *bridge;
 503         int aperture_bar = 0;
 504         int mmio_bar = 1;
 505         int offset;
 506
 507         DBG_MSG("intelfb_pci_register\n");
 508
 509         num_registered++;
 510         if (num_registered != 1) {
 511                 ERR_MSG("Attempted to register %d devices "
 512                         "(should be only 1).\n", num_registered);
 513                 return -ENODEV;
 514         }
 515
 516         info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
 517         if (!info) {
 518                 ERR_MSG("Could not allocate memory for intelfb_info.\n");
 519                 return -ENODEV;
 520         }
 521         if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
 522                 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
 523                 goto err_out_cmap;
 524                 return -ENODEV;
 525         }
 526
 527         dinfo = info->par;
 528         dinfo->info  = info;
 529         dinfo->fbops = &intel_fb_ops;
 530         dinfo->pdev  = pdev;
 531
 532         /* Reserve pixmap space. */
 533         info->pixmap.addr = kmalloc(64 * 1024, GFP_KERNEL);
 534         if (info->pixmap.addr == NULL) {
 535                 ERR_MSG("Cannot reserve pixmap memory.\n");
 536                 goto err_out_pixmap;
 537         }
 538         memset(info->pixmap.addr, 0, 64 * 1024);
 539
 540         /* set early this option because it could be changed by tv encoder
 541            driver */
 542         dinfo->fixed_mode = fixed;
 543
 544         /* Enable device. */
 545         if ((err = pci_enable_device(pdev))) {
 546                 ERR_MSG("Cannot enable device.\n");
 547                 cleanup(dinfo);
 548                 return -ENODEV;
 549         }
 550
 551         /* Set base addresses. */
 552         if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
 553             (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
 554             (ent->device == PCI_DEVICE_ID_INTEL_945G)  ||
 555             (ent->device == PCI_DEVICE_ID_INTEL_945GM)) {
 556                 aperture_bar = 2;
 557                 mmio_bar = 0;
 558         }
 559         dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
 560         dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
 561         dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
 562         DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
 563                 (unsigned long long)pci_resource_start(pdev, aperture_bar),
 564                 (unsigned long long)pci_resource_len(pdev, aperture_bar),
 565                 (unsigned long long)pci_resource_start(pdev, mmio_bar),
 566                 (unsigned long long)pci_resource_len(pdev, mmio_bar));
 567
 568         /* Reserve the fb and MMIO regions */
 569         if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
 570                                 INTELFB_MODULE_NAME)) {
 571                 ERR_MSG("Cannot reserve FB region.\n");
 572                 cleanup(dinfo);
 573                 return -ENODEV;
 574         }
 575
 576         dinfo->flag |= INTELFB_FB_ACQUIRED;
 577
 578         if (!request_mem_region(dinfo->mmio_base_phys,
 579                                 INTEL_REG_SIZE,
 580                                 INTELFB_MODULE_NAME)) {
 581                 ERR_MSG("Cannot reserve MMIO region.\n");
 582                 cleanup(dinfo);
 583                 return -ENODEV;
 584         }
 585
 586         dinfo->flag |= INTELFB_MMIO_ACQUIRED;
 587
 588         /* Get the chipset info. */
 589         dinfo->pci_chipset = pdev->device;
 590
 591         if (intelfbhw_get_chipset(pdev, dinfo)) {
 592                 cleanup(dinfo);
 593                 return -ENODEV;
 594         }
 595
 596         if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
 597                 cleanup(dinfo);
 598                 return -ENODEV;
 599         }
 600
 601         INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
 602                 "stolen memory %dkB\n",
 603                 pdev->bus->number, PCI_SLOT(pdev->devfn),
 604                 PCI_FUNC(pdev->devfn), dinfo->name,
 605                 BtoMB(aperture_size), BtoKB(stolen_size));
 606
 607         /* Set these from the options. */
 608         dinfo->accel    = accel;
 609         dinfo->hwcursor = hwcursor;
 610
 611         if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
 612                 INF_MSG("Acceleration is not supported for the %s chipset.\n",
 613                         dinfo->name);
 614                 dinfo->accel = 0;
 615         }
 616
 617         /* Framebuffer parameters - Use all the stolen memory if >= vram */
 618         if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
 619                 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
 620                 dinfo->fbmem_gart = 0;
 621         } else {
 622                 dinfo->fb.size =  MB(vram);
 623                 dinfo->fbmem_gart = 1;
 624         }
 625
 626         /* Allocate space for the ring buffer and HW cursor if enabled. */
 627         if (dinfo->accel) {
 628                 dinfo->ring.size = RINGBUFFER_SIZE;
 629                 dinfo->ring_tail_mask = dinfo->ring.size - 1;
 630         }
 631         if (dinfo->hwcursor) {
 632                 dinfo->cursor.size = HW_CURSOR_SIZE;
 633         }
 634
 635         /* Use agpgart to manage the GATT */
 636         if (!(bridge = agp_backend_acquire(pdev))) {
 637                 ERR_MSG("cannot acquire agp\n");
 638                 cleanup(dinfo);
 639                 return -ENODEV;
 640         }
 641
 642         /* get the current gatt info */
 643         if (agp_copy_info(bridge, &gtt_info)) {
 644                 ERR_MSG("cannot get agp info\n");
 645                 agp_backend_release(bridge);
 646                 cleanup(dinfo);
 647                 return -ENODEV;
 648         }
 649
 650         if (MB(voffset) < stolen_size)
 651                 offset = (stolen_size >> 12);
 652         else
 653                 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
 654
 655         /* set the mem offsets - set them after the already used pages */
 656         if (dinfo->accel) {
 657                 dinfo->ring.offset = offset + gtt_info.current_memory;
 658         }
 659         if (dinfo->hwcursor) {
 660                 dinfo->cursor.offset = offset +
 661                         + gtt_info.current_memory + (dinfo->ring.size >> 12);
 662         }
 663         if (dinfo->fbmem_gart) {
 664                 dinfo->fb.offset = offset +
 665                         + gtt_info.current_memory + (dinfo->ring.size >> 12)
 666                         + (dinfo->cursor.size >> 12);
 667         }
 668
 669         /* Allocate memories (which aren't stolen) */
 670         /* Map the fb and MMIO regions */
 671         /* ioremap only up to the end of used aperture */
 672         dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
 673                 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
 674                  + dinfo->fb.size);
 675         if (!dinfo->aperture.virtual) {
 676                 ERR_MSG("Cannot remap FB region.\n");
 677                 cleanup(dinfo);
 678                 return -ENODEV;
 679         }
 680
 681         dinfo->mmio_base =
 682                 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
 683                                                INTEL_REG_SIZE);
 684         if (!dinfo->mmio_base) {
 685                 ERR_MSG("Cannot remap MMIO region.\n");
 686                 cleanup(dinfo);
 687                 return -ENODEV;
 688         }
 689
 690         if (dinfo->accel) {
 691                 if (!(dinfo->gtt_ring_mem =
 692                       agp_allocate_memory(bridge, dinfo->ring.size >> 12,
 693                                           AGP_NORMAL_MEMORY))) {
 694                         ERR_MSG("cannot allocate ring buffer memory\n");
 695                         agp_backend_release(bridge);
 696                         cleanup(dinfo);
 697                         return -ENOMEM;
 698                 }
 699                 if (agp_bind_memory(dinfo->gtt_ring_mem,
 700                                     dinfo->ring.offset)) {
 701                         ERR_MSG("cannot bind ring buffer memory\n");
 702                         agp_backend_release(bridge);
 703                         cleanup(dinfo);
 704                         return -EBUSY;
 705                 }
 706                 dinfo->ring.physical = dinfo->aperture.physical
 707                         + (dinfo->ring.offset << 12);
 708                 dinfo->ring.virtual  = dinfo->aperture.virtual
 709                         + (dinfo->ring.offset << 12);
 710                 dinfo->ring_head = dinfo->ring.virtual;
 711         }
 712         if (dinfo->hwcursor) {
 713                 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
 714                         : AGP_NORMAL_MEMORY;
 715                 if (!(dinfo->gtt_cursor_mem =
 716                       agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
 717                                           agp_memtype))) {
 718                         ERR_MSG("cannot allocate cursor memory\n");
 719                         agp_backend_release(bridge);
 720                         cleanup(dinfo);
 721                         return -ENOMEM;
 722                 }
 723                 if (agp_bind_memory(dinfo->gtt_cursor_mem,
 724                                     dinfo->cursor.offset)) {
 725                         ERR_MSG("cannot bind cursor memory\n");
 726                         agp_backend_release(bridge);
 727                         cleanup(dinfo);
 728                         return -EBUSY;
 729                 }
 730                 if (dinfo->mobile)
 731                         dinfo->cursor.physical
 732                                 = dinfo->gtt_cursor_mem->physical;
 733                 else
 734                         dinfo->cursor.physical = dinfo->aperture.physical
 735                                 + (dinfo->cursor.offset << 12);
 736                 dinfo->cursor.virtual = dinfo->aperture.virtual
 737                         + (dinfo->cursor.offset << 12);
 738         }
 739         if (dinfo->fbmem_gart) {
 740                 if (!(dinfo->gtt_fb_mem =
 741                       agp_allocate_memory(bridge, dinfo->fb.size >> 12,
 742                                           AGP_NORMAL_MEMORY))) {
 743                         WRN_MSG("cannot allocate framebuffer memory - use "
 744                                 "the stolen one\n");
 745                         dinfo->fbmem_gart = 0;
 746                 }
 747                 if (agp_bind_memory(dinfo->gtt_fb_mem,
 748                                     dinfo->fb.offset)) {
 749                         WRN_MSG("cannot bind framebuffer memory - use "
 750                                 "the stolen one\n");
 751                         dinfo->fbmem_gart = 0;
 752                 }
 753         }
 754
 755         /* update framebuffer memory parameters */
 756         if (!dinfo->fbmem_gart)
 757                 dinfo->fb.offset = 0;   /* starts at offset 0 */
 758         dinfo->fb.physical = dinfo->aperture.physical
 759                 + (dinfo->fb.offset << 12);
 760         dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
 761         dinfo->fb_start = dinfo->fb.offset << 12;
 762
 763         /* release agpgart */
 764         agp_backend_release(bridge);
 765
 766         if (mtrr)
 767                 set_mtrr(dinfo);
 768
 769         DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%x)\n",
 770                 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
 771                 (u32 __iomem ) dinfo->fb.virtual);
 772         DBG_MSG("MMIO: 0x%x/0x%x (0x%x)\n",
 773                 dinfo->mmio_base_phys, INTEL_REG_SIZE,
 774                 (u32 __iomem) dinfo->mmio_base);
 775         DBG_MSG("ring buffer: 0x%x/0x%x (0x%x)\n",
 776                 dinfo->ring.physical, dinfo->ring.size,
 777                 (u32 __iomem ) dinfo->ring.virtual);
 778         DBG_MSG("HW cursor: 0x%x/0x%x (0x%x) (offset 0x%x) (phys 0x%x)\n",
 779                 dinfo->cursor.physical, dinfo->cursor.size,
 780                 (u32 __iomem ) dinfo->cursor.virtual, dinfo->cursor.offset,
 781                 dinfo->cursor.physical);
 782
 783         DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
 784                 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
 785         DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
 786
 787         if (probeonly)
 788                 bailout(dinfo);
 789
 790         /*
 791          * Check if the LVDS port or any DVO ports are enabled.  If so,
 792          * don't allow mode switching
 793          */
 794         dvo = intelfbhw_check_non_crt(dinfo);
 795         if (dvo) {
 796                 dinfo->fixed_mode = 1;
 797                 WRN_MSG("Non-CRT device is enabled ( ");
 798                 i = 0;
 799                 while (dvo) {
 800                         if (dvo & 1) {
 801                                 s = intelfbhw_dvo_to_string(1 << i);
 802                                 if (s)
 803                                         printk("%s ", s);
 804                         }
 805                         dvo >>= 1;
 806                         ++i;
 807                 }
 808                 printk(").  Disabling mode switching.\n");
 809         }
 810
 811         if (bailearly == 1)
 812                 bailout(dinfo);
 813
 814         if (FIXED_MODE(dinfo) && ORIG_VIDEO_ISVGA != VIDEO_TYPE_VLFB) {
 815                 ERR_MSG("Video mode must be programmed at boot time.\n");
 816                 cleanup(dinfo);
 817                 return -ENODEV;
 818         }
 819
 820         if (bailearly == 2)
 821                 bailout(dinfo);
 822
 823         /* Initialise dinfo and related data. */
 824         /* If an initial mode was programmed at boot time, get its details. */
 825         if (ORIG_VIDEO_ISVGA == VIDEO_TYPE_VLFB)
 826                 get_initial_mode(dinfo);
 827
 828         if (bailearly == 3)
 829                 bailout(dinfo);
 830
 831         if (FIXED_MODE(dinfo)) {
 832                 /* remap fb address */
 833                 update_dinfo(dinfo, &dinfo->initial_var);
 834         }
 835
 836         if (bailearly == 4)
 837                 bailout(dinfo);
 838
 839
 840         if (intelfb_set_fbinfo(dinfo)) {
 841                 cleanup(dinfo);
 842                 return -ENODEV;
 843         }
 844
 845         if (bailearly == 5)
 846                 bailout(dinfo);
 847
 848         if (bailearly == 6)
 849                 bailout(dinfo);
 850
 851         pci_set_drvdata(pdev, dinfo);
 852
 853         /* Save the initial register state. */
 854         i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
 855                                     bailearly > 6 ? bailearly - 6 : 0);
 856         if (i != 0) {
 857                 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
 858                 bailout(dinfo);
 859         }
 860
 861         intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
 862
 863         if (bailearly == 18)
 864                 bailout(dinfo);
 865
 866         /* Cursor initialisation */
 867         if (dinfo->hwcursor) {
 868                 intelfbhw_cursor_init(dinfo);
 869                 intelfbhw_cursor_reset(dinfo);
 870         }
 871
 872         if (bailearly == 19)
 873                 bailout(dinfo);
 874
 875         /* 2d acceleration init */
 876         if (dinfo->accel)
 877                 intelfbhw_2d_start(dinfo);
 878
 879         if (bailearly == 20)
 880                 bailout(dinfo);
 881
 882         if (noregister)
 883                 bailout(dinfo);
 884
 885         if (register_framebuffer(dinfo->info) < 0) {
 886                 ERR_MSG("Cannot register framebuffer.\n");
 887                 cleanup(dinfo);
 888                 return -ENODEV;
 889         }
 890
 891         dinfo->registered = 1;
 892
 893         return 0;
 894
 895 err_out_pixmap:
 896         fb_dealloc_cmap(&info->cmap);
 897 err_out_cmap:
 898         framebuffer_release(info);
 899         return -ENODEV;
 900 }
 901
 902 static void __devexit
 903 intelfb_pci_unregister(struct pci_dev *pdev)
 904 {
 905         struct intelfb_info *dinfo = pci_get_drvdata(pdev);
 906
 907         DBG_MSG("intelfb_pci_unregister\n");
 908
 909         if (!dinfo)
 910                 return;
 911
 912         cleanup(dinfo);
 913
 914         pci_set_drvdata(pdev, NULL);
 915 }
 916
 917 /***************************************************************
 918  *                       helper functions                      *
 919  ***************************************************************/
 920
 921 int __inline__
 922 intelfb_var_to_depth(const struct fb_var_screeninfo *var)
 923 {
 924         DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
 925                 var->bits_per_pixel, var->green.length);
 926
 927         switch (var->bits_per_pixel) {
 928         case 16:
 929                 return (var->green.length == 6) ? 16 : 15;
 930         case 32:
 931                 return 24;
 932         default:
 933                 return var->bits_per_pixel;
 934         }
 935 }
 936
 937
 938 static __inline__ int
 939 var_to_refresh(const struct fb_var_screeninfo *var)
 940 {
 941         int xtot = var->xres + var->left_margin + var->right_margin +
 942                    var->hsync_len;
 943         int ytot = var->yres + var->upper_margin + var->lower_margin +
 944                    var->vsync_len;
 945
 946         return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
 947 }
 948
 949 /***************************************************************
 950  *                Various intialisation functions              *
 951  ***************************************************************/
 952
 953 static void __devinit
 954 get_initial_mode(struct intelfb_info *dinfo)
 955 {
 956         struct fb_var_screeninfo *var;
 957         int xtot, ytot;
 958
 959         DBG_MSG("get_initial_mode\n");
 960
 961         dinfo->initial_vga = 1;
 962         dinfo->initial_fb_base = screen_info.lfb_base;
 963         dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
 964         dinfo->initial_pitch = screen_info.lfb_linelength;
 965
 966         var = &dinfo->initial_var;
 967         memset(var, 0, sizeof(*var));
 968         var->xres = screen_info.lfb_width;
 969         var->yres = screen_info.lfb_height;
 970         var->bits_per_pixel = screen_info.lfb_depth;
 971         switch (screen_info.lfb_depth) {
 972         case 15:
 973                 var->bits_per_pixel = 16;
 974                 break;
 975         case 24:
 976                 var->bits_per_pixel = 32;
 977                 break;
 978         }
 979
 980         DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
 981                 dinfo->initial_fb_base, dinfo->initial_video_ram,
 982                 BtoKB(dinfo->initial_video_ram));
 983
 984         DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
 985                 var->xres, var->yres, var->bits_per_pixel,
 986                 dinfo->initial_pitch);
 987
 988         /* Dummy timing values (assume 60Hz) */
 989         var->left_margin = (var->xres / 8) & 0xf8;
 990         var->right_margin = 32;
 991         var->upper_margin = 16;
 992         var->lower_margin = 4;
 993         var->hsync_len = (var->xres / 8) & 0xf8;
 994         var->vsync_len = 4;
 995
 996         xtot = var->xres + var->left_margin +
 997                 var->right_margin + var->hsync_len;
 998         ytot = var->yres + var->upper_margin +
 999                 var->lower_margin + var->vsync_len;
1000         var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1001
1002         var->height = -1;
1003         var->width = -1;
1004
1005         if (var->bits_per_pixel > 8) {
1006                 var->red.offset = screen_info.red_pos;
1007                 var->red.length = screen_info.red_size;
1008                 var->green.offset = screen_info.green_pos;
1009                 var->green.length = screen_info.green_size;
1010                 var->blue.offset = screen_info.blue_pos;
1011                 var->blue.length = screen_info.blue_size;
1012                 var->transp.offset = screen_info.rsvd_pos;
1013                 var->transp.length = screen_info.rsvd_size;
1014         } else {
1015                 var->red.length = 8;
1016                 var->green.length = 8;
1017                 var->blue.length = 8;
1018         }
1019 }
1020
1021 static int __devinit
1022 intelfb_init_var(struct intelfb_info *dinfo)
1023 {
1024         struct fb_var_screeninfo *var;
1025         int msrc = 0;
1026
1027         DBG_MSG("intelfb_init_var\n");
1028
1029         var = &dinfo->info->var;
1030         if (FIXED_MODE(dinfo)) {
1031                 memcpy(var, &dinfo->initial_var,
1032                        sizeof(struct fb_var_screeninfo));
1033                 msrc = 5;
1034         } else {
1035                 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1036                 u8 *edid_d = NULL;
1037
1038                 if (edid_s) {
1039                         edid_d = kmalloc(EDID_LENGTH, GFP_KERNEL);
1040
1041                         if (edid_d) {
1042                                 memcpy(edid_d, edid_s, EDID_LENGTH);
1043                                 fb_edid_to_monspecs(edid_d,
1044                                                     &dinfo->info->monspecs);
1045                                 kfree(edid_d);
1046                         }
1047                 }
1048
1049                 if (mode) {
1050                         printk("intelfb: Looking for mode in private "
1051                                "database\n");
1052                         msrc = fb_find_mode(var, dinfo->info, mode,
1053                                             dinfo->info->monspecs.modedb,
1054                                             dinfo->info->monspecs.modedb_len,
1055                                             NULL, 0);
1056
1057                         if (msrc && msrc > 1) {
1058                                 printk("intelfb: No mode in private database, "
1059                                        "intelfb: looking for mode in global "
1060                                        "database ");
1061                                 msrc = fb_find_mode(var, dinfo->info, mode,
1062                                                     NULL, 0, NULL, 0);
1063
1064                                 if (msrc)
1065                                         msrc |= 8;
1066                         }
1067
1068                 }
1069
1070                 if (!msrc) {
1071                         msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1072                                             NULL, 0, NULL, 0);
1073                 }
1074         }
1075
1076         if (!msrc) {
1077                 ERR_MSG("Cannot find a suitable video mode.\n");
1078                 return 1;
1079         }
1080
1081         INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1082                 var->bits_per_pixel, var_to_refresh(var));
1083
1084         DBG_MSG("Initial video mode is from %d.\n", msrc);
1085
1086 #if ALLOCATE_FOR_PANNING
1087         /* Allow use of half of the video ram for panning */
1088         var->xres_virtual = var->xres;
1089         var->yres_virtual =
1090                 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1091         if (var->yres_virtual < var->yres)
1092                 var->yres_virtual = var->yres;
1093 #else
1094         var->yres_virtual = var->yres;
1095 #endif
1096
1097         if (dinfo->accel)
1098                 var->accel_flags |= FB_ACCELF_TEXT;
1099         else
1100                 var->accel_flags &= ~FB_ACCELF_TEXT;
1101
1102         return 0;
1103 }
1104
1105 static int __devinit
1106 intelfb_set_fbinfo(struct intelfb_info *dinfo)
1107 {
1108         struct fb_info *info = dinfo->info;
1109
1110         DBG_MSG("intelfb_set_fbinfo\n");
1111
1112         info->flags = FBINFO_FLAG_DEFAULT;
1113         info->fbops = &intel_fb_ops;
1114         info->pseudo_palette = dinfo->pseudo_palette;
1115
1116         info->pixmap.size = 64*1024;
1117         info->pixmap.buf_align = 8;
1118         info->pixmap.access_align = 32;
1119         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1120
1121         if (intelfb_init_var(dinfo))
1122                 return 1;
1123
1124         info->pixmap.scan_align = 1;
1125         strcpy(info->fix.id, dinfo->name);
1126         info->fix.smem_start = dinfo->fb.physical;
1127         info->fix.smem_len = dinfo->fb.size;
1128         info->fix.type = FB_TYPE_PACKED_PIXELS;
1129         info->fix.type_aux = 0;
1130         info->fix.xpanstep = 8;
1131         info->fix.ypanstep = 1;
1132         info->fix.ywrapstep = 0;
1133         info->fix.mmio_start = dinfo->mmio_base_phys;
1134         info->fix.mmio_len = INTEL_REG_SIZE;
1135         info->fix.accel = FB_ACCEL_I830;
1136         update_dinfo(dinfo, &info->var);
1137
1138         return 0;
1139 }
1140
1141 /* Update dinfo to match the active video mode. */
1142 static void
1143 update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var)
1144 {
1145         DBG_MSG("update_dinfo\n");
1146
1147         dinfo->bpp = var->bits_per_pixel;
1148         dinfo->depth = intelfb_var_to_depth(var);
1149         dinfo->xres = var->xres;
1150         dinfo->yres = var->xres;
1151         dinfo->pixclock = var->pixclock;
1152
1153         dinfo->info->fix.visual = dinfo->visual;
1154         dinfo->info->fix.line_length = dinfo->pitch;
1155
1156         switch (dinfo->bpp) {
1157         case 8:
1158                 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1159                 dinfo->pitch = var->xres_virtual;
1160                 break;
1161         case 16:
1162                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1163                 dinfo->pitch = var->xres_virtual * 2;
1164                 break;
1165         case 32:
1166                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1167                 dinfo->pitch = var->xres_virtual * 4;
1168                 break;
1169         }
1170
1171         /* Make sure the line length is a aligned correctly. */
1172         if (IS_I9XX(dinfo))
1173                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1174         else
1175                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1176
1177         if (FIXED_MODE(dinfo))
1178                 dinfo->pitch = dinfo->initial_pitch;
1179
1180         dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1181         dinfo->info->fix.line_length = dinfo->pitch;
1182         dinfo->info->fix.visual = dinfo->visual;
1183 }
1184
1185 /* fbops functions */
1186
1187 /***************************************************************
1188  *                       fbdev interface                       *
1189  ***************************************************************/
1190
1191 static int
1192 intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1193 {
1194         int change_var = 0;
1195         struct fb_var_screeninfo v;
1196         struct intelfb_info *dinfo;
1197         static int first = 1;
1198         int i;
1199         /* Good pitches to allow tiling.  Don't care about pitches < 1024. */
1200         static const int pitches[] = {
1201                 128 * 8,
1202                 128 * 16,
1203                 128 * 32,
1204                 128 * 64,
1205                 0
1206         };
1207
1208         DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1209
1210         dinfo = GET_DINFO(info);
1211
1212         /* update the pitch */
1213         if (intelfbhw_validate_mode(dinfo, var) != 0)
1214                 return -EINVAL;
1215
1216         v = *var;
1217
1218         for (i = 0; pitches[i] != 0; i++) {
1219                 if (pitches[i] >= v.xres_virtual) {
1220                         v.xres_virtual = pitches[i];
1221                         break;
1222                 }
1223         }
1224
1225         /* Check for a supported bpp. */
1226         if (v.bits_per_pixel <= 8) {
1227                 v.bits_per_pixel = 8;
1228         } else if (v.bits_per_pixel <= 16) {
1229                 if (v.bits_per_pixel == 16)
1230                         v.green.length = 6;
1231                 v.bits_per_pixel = 16;
1232         } else if (v.bits_per_pixel <= 32) {
1233                 v.bits_per_pixel = 32;
1234         } else
1235                 return -EINVAL;
1236
1237         change_var = ((info->var.xres != var->xres) ||
1238                       (info->var.yres != var->yres) ||
1239                       (info->var.xres_virtual != var->xres_virtual) ||
1240                       (info->var.yres_virtual != var->yres_virtual) ||
1241                       (info->var.bits_per_pixel != var->bits_per_pixel) ||
1242                       memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1243                       memcmp(&info->var.green, &var->green,
1244                              sizeof(var->green)) ||
1245                       memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1246
1247         if (FIXED_MODE(dinfo) &&
1248             (change_var ||
1249              var->yres_virtual > dinfo->initial_var.yres_virtual ||
1250              var->yres_virtual < dinfo->initial_var.yres ||
1251              var->xoffset || var->nonstd)) {
1252                 if (first) {
1253                         ERR_MSG("Changing the video mode is not supported.\n");
1254                         first = 0;
1255                 }
1256                 return -EINVAL;
1257         }
1258
1259         switch (intelfb_var_to_depth(&v)) {
1260         case 8:
1261                 v.red.offset = v.green.offset = v.blue.offset = 0;
1262                 v.red.length = v.green.length = v.blue.length = 8;
1263                 v.transp.offset = v.transp.length = 0;
1264                 break;
1265         case 15:
1266                 v.red.offset = 10;
1267                 v.green.offset = 5;
1268                 v.blue.offset = 0;
1269                 v.red.length = v.green.length = v.blue.length = 5;
1270                 v.transp.offset = v.transp.length = 0;
1271                 break;
1272         case 16:
1273                 v.red.offset = 11;
1274                 v.green.offset = 5;
1275                 v.blue.offset = 0;
1276                 v.red.length = 5;
1277                 v.green.length = 6;
1278                 v.blue.length = 5;
1279                 v.transp.offset = v.transp.length = 0;
1280                 break;
1281         case 24:
1282                 v.red.offset = 16;
1283                 v.green.offset = 8;
1284                 v.blue.offset = 0;
1285                 v.red.length = v.green.length = v.blue.length = 8;
1286                 v.transp.offset = v.transp.length = 0;
1287                 break;
1288         case 32:
1289                 v.red.offset = 16;
1290                 v.green.offset = 8;
1291                 v.blue.offset = 0;
1292                 v.red.length = v.green.length = v.blue.length = 8;
1293                 v.transp.offset = 24;
1294                 v.transp.length = 8;
1295                 break;
1296         }
1297
1298         if (v.xoffset < 0)
1299                 v.xoffset = 0;
1300         if (v.yoffset < 0)
1301                 v.yoffset = 0;
1302
1303         if (v.xoffset > v.xres_virtual - v.xres)
1304                 v.xoffset = v.xres_virtual - v.xres;
1305         if (v.yoffset > v.yres_virtual - v.yres)
1306                 v.yoffset = v.yres_virtual - v.yres;
1307
1308         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1309                           v.transp.msb_right = 0;
1310
1311         *var = v;
1312
1313         return 0;
1314 }
1315
1316 static int
1317 intelfb_set_par(struct fb_info *info)
1318 {
1319         struct intelfb_hwstate *hw;
1320         struct intelfb_info *dinfo = GET_DINFO(info);
1321
1322         if (FIXED_MODE(dinfo)) {
1323                 ERR_MSG("Changing the video mode is not supported.\n");
1324                 return -EINVAL;
1325         }
1326
1327         hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1328         if (!hw)
1329                 return -ENOMEM;
1330
1331         DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1332                 info->var.yres, info->var.bits_per_pixel);
1333
1334         intelfb_blank(FB_BLANK_POWERDOWN, info);
1335
1336         if (ACCEL(dinfo, info))
1337                 intelfbhw_2d_stop(dinfo);
1338
1339         memcpy(hw, &dinfo->save_state, sizeof(*hw));
1340         if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1341                 goto invalid_mode;
1342         if (intelfbhw_program_mode(dinfo, hw, 0))
1343                 goto invalid_mode;
1344
1345 #if REGDUMP > 0
1346         intelfbhw_read_hw_state(dinfo, hw, 0);
1347         intelfbhw_print_hw_state(dinfo, hw);
1348 #endif
1349
1350         update_dinfo(dinfo, &info->var);
1351
1352         if (ACCEL(dinfo, info))
1353                 intelfbhw_2d_start(dinfo);
1354
1355         intelfb_pan_display(&info->var, info);
1356
1357         intelfb_blank(FB_BLANK_UNBLANK, info);
1358
1359         if (ACCEL(dinfo, info)) {
1360                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1361                 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1362                 FBINFO_HWACCEL_IMAGEBLIT;
1363         } else {
1364                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1365         }
1366         kfree(hw);
1367         return 0;
1368 invalid_mode:
1369         kfree(hw);
1370         return -EINVAL;
1371 }
1372
1373 static int
1374 intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1375                   unsigned blue, unsigned transp, struct fb_info *info)
1376 {
1377         struct intelfb_info *dinfo = GET_DINFO(info);
1378
1379 #if VERBOSE > 0
1380         DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1381 #endif
1382
1383         if (regno > 255)
1384                 return 1;
1385
1386         if (dinfo->depth == 8) {
1387                 red >>= 8;
1388                 green >>= 8;
1389                 blue >>= 8;
1390
1391                 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1392                                     transp);
1393         }
1394
1395         if (regno < 16) {
1396                 switch (dinfo->depth) {
1397                 case 15:
1398                         dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1399                                 ((green & 0xf800) >>  6) |
1400                                 ((blue & 0xf800) >> 11);
1401                         break;
1402                 case 16:
1403                         dinfo->pseudo_palette[regno] = (red & 0xf800) |
1404                                 ((green & 0xfc00) >>  5) |
1405                                 ((blue  & 0xf800) >> 11);
1406                         break;
1407                 case 24:
1408                         dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1409                                 (green & 0xff00) |
1410                                 ((blue  & 0xff00) >> 8);
1411                         break;
1412                 }
1413         }
1414
1415         return 0;
1416 }
1417
1418 static int
1419 intelfb_blank(int blank, struct fb_info *info)
1420 {
1421         intelfbhw_do_blank(blank, info);
1422         return 0;
1423 }
1424
1425 static int
1426 intelfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1427 {
1428         intelfbhw_pan_display(var, info);
1429         return 0;
1430 }
1431
1432 /* When/if we have our own ioctls. */
1433 static int
1434 intelfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
1435 {
1436         int retval = 0;
1437
1438         return retval;
1439 }
1440
1441 static void
1442 intelfb_fillrect (struct fb_info *info, const struct fb_fillrect *rect)
1443 {
1444         struct intelfb_info *dinfo = GET_DINFO(info);
1445         u32 rop, color;
1446
1447 #if VERBOSE > 0
1448         DBG_MSG("intelfb_fillrect\n");
1449 #endif
1450
1451         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1452                 return cfb_fillrect(info, rect);
1453
1454         if (rect->rop == ROP_COPY)
1455                 rop = PAT_ROP_GXCOPY;
1456         else // ROP_XOR
1457                 rop = PAT_ROP_GXXOR;
1458
1459         if (dinfo->depth != 8)
1460                 color = dinfo->pseudo_palette[rect->color];
1461         else
1462                 color = rect->color;
1463
1464         intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1465                               rect->width, rect->height, color,
1466                               dinfo->pitch, info->var.bits_per_pixel,
1467                               rop);
1468 }
1469
1470 static void
1471 intelfb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
1472 {
1473         struct intelfb_info *dinfo = GET_DINFO(info);
1474
1475 #if VERBOSE > 0
1476         DBG_MSG("intelfb_copyarea\n");
1477 #endif
1478
1479         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1480                 return cfb_copyarea(info, region);
1481
1482         intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1483                             region->dy, region->width, region->height,
1484                             dinfo->pitch, info->var.bits_per_pixel);
1485 }
1486
1487 static void
1488 intelfb_imageblit(struct fb_info *info, const struct fb_image *image)
1489 {
1490         struct intelfb_info *dinfo = GET_DINFO(info);
1491         u32 fgcolor, bgcolor;
1492
1493 #if VERBOSE > 0
1494         DBG_MSG("intelfb_imageblit\n");
1495 #endif
1496
1497         if (!ACCEL(dinfo, info) || dinfo->depth == 4
1498             || image->depth != 1)
1499                 return cfb_imageblit(info, image);
1500
1501         if (dinfo->depth != 8) {
1502                 fgcolor = dinfo->pseudo_palette[image->fg_color];
1503                 bgcolor = dinfo->pseudo_palette[image->bg_color];
1504         } else {
1505                 fgcolor = image->fg_color;
1506                 bgcolor = image->bg_color;
1507         }
1508
1509         if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1510                                     image->height, image->data,
1511                                     image->dx, image->dy,
1512                                     dinfo->pitch, info->var.bits_per_pixel))
1513                 return cfb_imageblit(info, image);
1514 }
1515
1516 static int
1517 intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1518 {
1519         struct intelfb_info *dinfo = GET_DINFO(info);
1520         u32 physical;
1521 #if VERBOSE > 0
1522         DBG_MSG("intelfb_cursor\n");
1523 #endif
1524
1525         if (!dinfo->hwcursor)
1526                 return -ENODEV;
1527
1528         intelfbhw_cursor_hide(dinfo);
1529
1530         /* If XFree killed the cursor - restore it */
1531         physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1532                    (dinfo->cursor.offset << 12);
1533
1534         if (INREG(CURSOR_A_BASEADDR) != physical) {
1535                 u32 fg, bg;
1536
1537                 DBG_MSG("the cursor was killed - restore it !!\n");
1538                 DBG_MSG("size %d, %d   pos %d, %d\n",
1539                         cursor->image.width, cursor->image.height,
1540                         cursor->image.dx, cursor->image.dy);
1541
1542                 intelfbhw_cursor_init(dinfo);
1543                 intelfbhw_cursor_reset(dinfo);
1544                 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1545                                         cursor->image.dy);
1546
1547                 if (dinfo->depth != 8) {
1548                         fg =dinfo->pseudo_palette[cursor->image.fg_color];
1549                         bg =dinfo->pseudo_palette[cursor->image.bg_color];
1550                 } else {
1551                         fg = cursor->image.fg_color;
1552                         bg = cursor->image.bg_color;
1553                 }
1554                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1555                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1556                                       cursor->image.height,
1557                                       dinfo->cursor_src);
1558
1559                 if (cursor->enable)
1560                         intelfbhw_cursor_show(dinfo);
1561                 return 0;
1562         }
1563
1564         if (cursor->set & FB_CUR_SETPOS) {
1565                 u32 dx, dy;
1566
1567                 dx = cursor->image.dx - info->var.xoffset;
1568                 dy = cursor->image.dy - info->var.yoffset;
1569
1570                 intelfbhw_cursor_setpos(dinfo, dx, dy);
1571         }
1572
1573         if (cursor->set & FB_CUR_SETSIZE) {
1574                 if (cursor->image.width > 64 || cursor->image.height > 64)
1575                         return -ENXIO;
1576
1577                 intelfbhw_cursor_reset(dinfo);
1578         }
1579
1580         if (cursor->set & FB_CUR_SETCMAP) {
1581                 u32 fg, bg;
1582
1583                 if (dinfo->depth != 8) {
1584                         fg = dinfo->pseudo_palette[cursor->image.fg_color];
1585                         bg = dinfo->pseudo_palette[cursor->image.bg_color];
1586                 } else {
1587                         fg = cursor->image.fg_color;
1588                         bg = cursor->image.bg_color;
1589                 }
1590
1591                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1592         }
1593
1594         if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1595                 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1596                 u32 size = s_pitch * cursor->image.height;
1597                 u8 *dat = (u8 *) cursor->image.data;
1598                 u8 *msk = (u8 *) cursor->mask;
1599                 u8 src[64];
1600                 u32 i;
1601
1602                 if (cursor->image.depth != 1)
1603                         return -ENXIO;
1604
1605                 switch (cursor->rop) {
1606                 case ROP_XOR:
1607                         for (i = 0; i < size; i++)
1608                                 src[i] = dat[i] ^ msk[i];
1609                         break;
1610                 case ROP_COPY:
1611                 default:
1612                         for (i = 0; i < size; i++)
1613                                 src[i] = dat[i] & msk[i];
1614                         break;
1615                 }
1616
1617                 /* save the bitmap to restore it when XFree will
1618                    make the cursor dirty */
1619                 memcpy(dinfo->cursor_src, src, size);
1620
1621                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1622                                       cursor->image.height, src);
1623         }
1624
1625         if (cursor->enable)
1626                 intelfbhw_cursor_show(dinfo);
1627
1628         return 0;
1629 }
1630
1631 static int
1632 intelfb_sync(struct fb_info *info)
1633 {
1634         struct intelfb_info *dinfo = GET_DINFO(info);
1635
1636 #if VERBOSE > 0
1637         DBG_MSG("intelfb_sync\n");
1638 #endif
1639
1640         if (dinfo->ring_lockup)
1641                 return 0;
1642
1643         intelfbhw_do_sync(dinfo);
1644         return 0;
1645 }
1646