drivers/video/fbdev/intelfb/intelfbdrv.c

   1 /*
   2  * intelfb
   3  *
   4  * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM/
   5  * 945G/945GM/945GME/965G/965GM integrated graphics chips.
   6  *
   7  * Copyright © 2002, 2003 David Dawes <[email protected]>
   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  *    04/2008 - Version 0.9.5
 104  *              Add support for 965G/965GM. (Maik Broemme <[email protected]>)
 105  *
 106  *    08/2008 - Version 0.9.6
 107  *              Add support for 945GME. (Phil Endecott <[email protected]>)
 108  */
 109
 110 #include <linux/aperture.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/slab.h>
 117 #include <linux/delay.h>
 118 #include <linux/fb.h>
 119 #include <linux/ioport.h>
 120 #include <linux/init.h>
 121 #include <linux/pci.h>
 122 #include <linux/vmalloc.h>
 123 #include <linux/pagemap.h>
 124 #include <linux/screen_info.h>
 125
 126 #include <asm/io.h>
 127
 128 #include "intelfb.h"
 129 #include "intelfbhw.h"
 130 #include "../edid.h"
 131
 132 static void get_initial_mode(struct intelfb_info *dinfo);
 133 static void update_dinfo(struct intelfb_info *dinfo,
 134                          struct fb_var_screeninfo *var);
 135 static int intelfb_open(struct fb_info *info, int user);
 136 static int intelfb_release(struct fb_info *info, int user);
 137 static int intelfb_check_var(struct fb_var_screeninfo *var,
 138                              struct fb_info *info);
 139 static int intelfb_set_par(struct fb_info *info);
 140 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 141                              unsigned blue, unsigned transp,
 142                              struct fb_info *info);
 143
 144 static int intelfb_blank(int blank, struct fb_info *info);
 145 static int intelfb_pan_display(struct fb_var_screeninfo *var,
 146                                struct fb_info *info);
 147
 148 static void intelfb_fillrect(struct fb_info *info,
 149                              const struct fb_fillrect *rect);
 150 static void intelfb_copyarea(struct fb_info *info,
 151                              const struct fb_copyarea *region);
 152 static void intelfb_imageblit(struct fb_info *info,
 153                               const struct fb_image *image);
 154 static int intelfb_cursor(struct fb_info *info,
 155                            struct fb_cursor *cursor);
 156
 157 static int intelfb_sync(struct fb_info *info);
 158
 159 static int intelfb_ioctl(struct fb_info *info,
 160                          unsigned int cmd, unsigned long arg);
 161
 162 static int intelfb_pci_register(struct pci_dev *pdev,
 163                                 const struct pci_device_id *ent);
 164 static void intelfb_pci_unregister(struct pci_dev *pdev);
 165 static int intelfb_set_fbinfo(struct intelfb_info *dinfo);
 166
 167 /*
 168  * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
 169  * mobile chipsets from being registered.
 170  */
 171 #if DETECT_VGA_CLASS_ONLY
 172 #define INTELFB_CLASS_MASK ~0 << 8
 173 #else
 174 #define INTELFB_CLASS_MASK 0
 175 #endif
 176
 177 static const struct pci_device_id intelfb_pci_table[] = {
 178         { 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 },
 179         { 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 },
 180         { 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 },
 181         { 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 },
 182         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_854, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_854 },
 183         { 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 },
 184         { 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 },
 185         { 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 },
 186         { 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 },
 187         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GME, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GME },
 188         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_965G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965G },
 189         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_965GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965GM },
 190         { 0, }
 191 };
 192
 193 /* Global data */
 194 static int num_registered = 0;
 195
 196 /* fb ops */
 197 static const struct fb_ops intel_fb_ops = {
 198         .owner =                THIS_MODULE,
 199         .fb_open =              intelfb_open,
 200         .fb_release =           intelfb_release,
 201         .fb_check_var =         intelfb_check_var,
 202         .fb_set_par =           intelfb_set_par,
 203         .fb_setcolreg =         intelfb_setcolreg,
 204         .fb_blank =             intelfb_blank,
 205         .fb_pan_display =       intelfb_pan_display,
 206         .fb_fillrect  =         intelfb_fillrect,
 207         .fb_copyarea  =         intelfb_copyarea,
 208         .fb_imageblit =         intelfb_imageblit,
 209         .fb_cursor =            intelfb_cursor,
 210         .fb_sync =              intelfb_sync,
 211         .fb_ioctl =             intelfb_ioctl
 212 };
 213
 214 /* PCI driver module table */
 215 static struct pci_driver intelfb_driver = {
 216         .name =         "intelfb",
 217         .id_table =     intelfb_pci_table,
 218         .probe =        intelfb_pci_register,
 219         .remove =       intelfb_pci_unregister,
 220 };
 221
 222 /* Module description/parameters */
 223 MODULE_AUTHOR("David Dawes <[email protected]>, "
 224               "Sylvain Meyer <[email protected]>");
 225 MODULE_DESCRIPTION("Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS
 226                    " chipsets");
 227 MODULE_LICENSE("Dual BSD/GPL");
 228 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
 229
 230 static bool accel       = 1;
 231 static int vram         = 4;
 232 static bool hwcursor    = 0;
 233 static bool mtrr        = 1;
 234 static bool fixed       = 0;
 235 static bool noinit      = 0;
 236 static bool noregister  = 0;
 237 static bool probeonly   = 0;
 238 static bool idonly      = 0;
 239 static int bailearly    = 0;
 240 static int voffset      = 48;
 241 static char *mode       = NULL;
 242
 243 module_param(accel, bool, S_IRUGO);
 244 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
 245 module_param(vram, int, S_IRUGO);
 246 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
 247 module_param(voffset, int, S_IRUGO);
 248 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
 249 module_param(hwcursor, bool, S_IRUGO);
 250 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
 251 module_param(mtrr, bool, S_IRUGO);
 252 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
 253 module_param(fixed, bool, S_IRUGO);
 254 MODULE_PARM_DESC(fixed, "Disable mode switching");
 255 module_param(noinit, bool, 0);
 256 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
 257 module_param(noregister, bool, 0);
 258 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
 259 module_param(probeonly, bool, 0);
 260 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
 261 module_param(idonly, bool, 0);
 262 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
 263 module_param(bailearly, int, 0);
 264 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
 265 module_param(mode, charp, S_IRUGO);
 266 MODULE_PARM_DESC(mode,
 267                  "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
 268
 269 #ifndef MODULE
 270 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
 271 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
 272 #define OPT_STRVAL(opt, name) (opt + strlen(name))
 273
 274 static __inline__ char * get_opt_string(const char *this_opt, const char *name)
 275 {
 276         const char *p;
 277         int i;
 278         char *ret;
 279
 280         p = OPT_STRVAL(this_opt, name);
 281         i = 0;
 282         while (p[i] && p[i] != ' ' && p[i] != ',')
 283                 i++;
 284         ret = kmalloc(i + 1, GFP_KERNEL);
 285         if (ret) {
 286                 strncpy(ret, p, i);
 287                 ret[i] = '\0';
 288         }
 289         return ret;
 290 }
 291
 292 static __inline__ int get_opt_int(const char *this_opt, const char *name,
 293                                   int *ret)
 294 {
 295         if (!ret)
 296                 return 0;
 297
 298         if (!OPT_EQUAL(this_opt, name))
 299                 return 0;
 300
 301         *ret = OPT_INTVAL(this_opt, name);
 302         return 1;
 303 }
 304
 305 static __inline__ int get_opt_bool(const char *this_opt, const char *name,
 306                                    bool *ret)
 307 {
 308         if (!ret)
 309                 return 0;
 310
 311         if (OPT_EQUAL(this_opt, name)) {
 312                 if (this_opt[strlen(name)] == '=')
 313                         *ret = simple_strtoul(this_opt + strlen(name) + 1,
 314                                               NULL, 0);
 315                 else
 316                         *ret = 1;
 317         } else {
 318                 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
 319                         *ret = 0;
 320                 else
 321                         return 0;
 322         }
 323         return 1;
 324 }
 325
 326 static int __init intelfb_setup(char *options)
 327 {
 328         char *this_opt;
 329
 330         DBG_MSG("intelfb_setup\n");
 331
 332         if (!options || !*options) {
 333                 DBG_MSG("no options\n");
 334                 return 0;
 335         } else
 336                 DBG_MSG("options: %s\n", options);
 337
 338         /*
 339          * These are the built-in options analogous to the module parameters
 340          * defined above.
 341          *
 342          * The syntax is:
 343          *
 344          *    video=intelfb:[mode][,<param>=<val>] ...
 345          *
 346          * e.g.,
 347          *
 348          *    video=intelfb:1024x768-16@75,accel=0
 349          */
 350
 351         while ((this_opt = strsep(&options, ","))) {
 352                 if (!*this_opt)
 353                         continue;
 354                 if (get_opt_bool(this_opt, "accel", &accel))
 355                         ;
 356                 else if (get_opt_int(this_opt, "vram", &vram))
 357                         ;
 358                 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
 359                         ;
 360                 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
 361                         ;
 362                 else if (get_opt_bool(this_opt, "fixed", &fixed))
 363                         ;
 364                 else if (get_opt_bool(this_opt, "init", &noinit))
 365                         noinit = !noinit;
 366                 else if (OPT_EQUAL(this_opt, "mode="))
 367                         mode = get_opt_string(this_opt, "mode=");
 368                 else
 369                         mode = this_opt;
 370         }
 371
 372         return 0;
 373 }
 374
 375 #endif
 376
 377 static int __init 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         if (fb_modesetting_disabled("intelfb"))
 393                 return -ENODEV;
 394
 395 #ifndef MODULE
 396         if (fb_get_options("intelfb", &option))
 397                 return -ENODEV;
 398         intelfb_setup(option);
 399 #endif
 400
 401         return pci_register_driver(&intelfb_driver);
 402 }
 403
 404 static void __exit intelfb_exit(void)
 405 {
 406         DBG_MSG("intelfb_exit\n");
 407         pci_unregister_driver(&intelfb_driver);
 408 }
 409
 410 module_init(intelfb_init);
 411 module_exit(intelfb_exit);
 412
 413 /***************************************************************
 414  *                        driver init / cleanup                *
 415  ***************************************************************/
 416
 417 static void cleanup(struct intelfb_info *dinfo)
 418 {
 419         DBG_MSG("cleanup\n");
 420
 421         if (!dinfo)
 422                 return;
 423
 424         intelfbhw_disable_irq(dinfo);
 425
 426         fb_dealloc_cmap(&dinfo->info->cmap);
 427         kfree(dinfo->info->pixmap.addr);
 428
 429         if (dinfo->registered)
 430                 unregister_framebuffer(dinfo->info);
 431
 432         arch_phys_wc_del(dinfo->wc_cookie);
 433
 434         if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
 435                 agp_unbind_memory(dinfo->gtt_fb_mem);
 436                 agp_free_memory(dinfo->gtt_fb_mem);
 437         }
 438         if (dinfo->gtt_cursor_mem) {
 439                 agp_unbind_memory(dinfo->gtt_cursor_mem);
 440                 agp_free_memory(dinfo->gtt_cursor_mem);
 441         }
 442         if (dinfo->gtt_ring_mem) {
 443                 agp_unbind_memory(dinfo->gtt_ring_mem);
 444                 agp_free_memory(dinfo->gtt_ring_mem);
 445         }
 446
 447 #ifdef CONFIG_FB_INTEL_I2C
 448         /* un-register I2C bus */
 449         intelfb_delete_i2c_busses(dinfo);
 450 #endif
 451
 452         if (dinfo->mmio_base)
 453                 iounmap((void __iomem *)dinfo->mmio_base);
 454         if (dinfo->aperture.virtual)
 455                 iounmap((void __iomem *)dinfo->aperture.virtual);
 456
 457         if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
 458                 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
 459         if (dinfo->flag & INTELFB_FB_ACQUIRED)
 460                 release_mem_region(dinfo->aperture.physical,
 461                                    dinfo->aperture.size);
 462         framebuffer_release(dinfo->info);
 463 }
 464
 465 #define bailout(dinfo) do {                                             \
 466         DBG_MSG("bailout\n");                                           \
 467         cleanup(dinfo);                                                 \
 468         INF_MSG("Not going to register framebuffer, exiting...\n");     \
 469         return -ENODEV;                                                 \
 470 } while (0)
 471
 472
 473 static int intelfb_pci_register(struct pci_dev *pdev,
 474                                 const struct pci_device_id *ent)
 475 {
 476         struct fb_info *info;
 477         struct intelfb_info *dinfo;
 478         int i, err, dvo;
 479         int aperture_size, stolen_size = 0;
 480         struct agp_kern_info gtt_info;
 481         int agp_memtype;
 482         const char *s;
 483         struct agp_bridge_data *bridge;
 484         int aperture_bar = 0;
 485         int mmio_bar = 1;
 486         int offset;
 487
 488         DBG_MSG("intelfb_pci_register\n");
 489
 490         err = aperture_remove_conflicting_pci_devices(pdev, "intelfb");
 491         if (err)
 492                 return err;
 493
 494         num_registered++;
 495         if (num_registered != 1) {
 496                 ERR_MSG("Attempted to register %d devices "
 497                         "(should be only 1).\n", num_registered);
 498                 return -ENODEV;
 499         }
 500
 501         info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
 502         if (!info)
 503                 return -ENOMEM;
 504
 505         if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
 506                 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
 507                 goto err_out_cmap;
 508         }
 509
 510         dinfo = info->par;
 511         dinfo->info  = info;
 512         dinfo->fbops = &intel_fb_ops;
 513         dinfo->pdev  = pdev;
 514
 515         /* Reserve pixmap space. */
 516         info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
 517         if (info->pixmap.addr == NULL) {
 518                 ERR_MSG("Cannot reserve pixmap memory.\n");
 519                 goto err_out_pixmap;
 520         }
 521
 522         /* set early this option because it could be changed by tv encoder
 523            driver */
 524         dinfo->fixed_mode = fixed;
 525
 526         /* Enable device. */
 527         if ((err = pci_enable_device(pdev))) {
 528                 ERR_MSG("Cannot enable device.\n");
 529                 cleanup(dinfo);
 530                 return -ENODEV;
 531         }
 532
 533         /* Set base addresses. */
 534         if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
 535             (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
 536             (ent->device == PCI_DEVICE_ID_INTEL_945G)  ||
 537             (ent->device == PCI_DEVICE_ID_INTEL_945GM) ||
 538             (ent->device == PCI_DEVICE_ID_INTEL_945GME) ||
 539             (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
 540             (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
 541
 542                 aperture_bar = 2;
 543                 mmio_bar = 0;
 544         }
 545         dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
 546         dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
 547         dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
 548         DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
 549                 (unsigned long long)pci_resource_start(pdev, aperture_bar),
 550                 (unsigned long long)pci_resource_len(pdev, aperture_bar),
 551                 (unsigned long long)pci_resource_start(pdev, mmio_bar),
 552                 (unsigned long long)pci_resource_len(pdev, mmio_bar));
 553
 554         /* Reserve the fb and MMIO regions */
 555         if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
 556                                 INTELFB_MODULE_NAME)) {
 557                 ERR_MSG("Cannot reserve FB region.\n");
 558                 cleanup(dinfo);
 559                 return -ENODEV;
 560         }
 561
 562         dinfo->flag |= INTELFB_FB_ACQUIRED;
 563
 564         if (!request_mem_region(dinfo->mmio_base_phys,
 565                                 INTEL_REG_SIZE,
 566                                 INTELFB_MODULE_NAME)) {
 567                 ERR_MSG("Cannot reserve MMIO region.\n");
 568                 cleanup(dinfo);
 569                 return -ENODEV;
 570         }
 571
 572         dinfo->flag |= INTELFB_MMIO_ACQUIRED;
 573
 574         /* Get the chipset info. */
 575         dinfo->pci_chipset = pdev->device;
 576
 577         if (intelfbhw_get_chipset(pdev, dinfo)) {
 578                 cleanup(dinfo);
 579                 return -ENODEV;
 580         }
 581
 582         if (intelfbhw_get_memory(pdev, &aperture_size, &stolen_size)) {
 583                 cleanup(dinfo);
 584                 return -ENODEV;
 585         }
 586
 587         INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
 588                 "stolen memory %dkB\n",
 589                 pdev->bus->number, PCI_SLOT(pdev->devfn),
 590                 PCI_FUNC(pdev->devfn), dinfo->name,
 591                 BtoMB(aperture_size), BtoKB(stolen_size));
 592
 593         /* Set these from the options. */
 594         dinfo->accel    = accel;
 595         dinfo->hwcursor = hwcursor;
 596
 597         if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
 598                 INF_MSG("Acceleration is not supported for the %s chipset.\n",
 599                         dinfo->name);
 600                 dinfo->accel = 0;
 601         }
 602
 603         /* Framebuffer parameters - Use all the stolen memory if >= vram */
 604         if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
 605                 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
 606                 dinfo->fbmem_gart = 0;
 607         } else {
 608                 dinfo->fb.size =  MB(vram);
 609                 dinfo->fbmem_gart = 1;
 610         }
 611
 612         /* Allocate space for the ring buffer and HW cursor if enabled. */
 613         if (dinfo->accel) {
 614                 dinfo->ring.size = RINGBUFFER_SIZE;
 615                 dinfo->ring_tail_mask = dinfo->ring.size - 1;
 616         }
 617         if (dinfo->hwcursor)
 618                 dinfo->cursor.size = HW_CURSOR_SIZE;
 619
 620         /* Use agpgart to manage the GATT */
 621         if (!(bridge = agp_backend_acquire(pdev))) {
 622                 ERR_MSG("cannot acquire agp\n");
 623                 cleanup(dinfo);
 624                 return -ENODEV;
 625         }
 626
 627         /* get the current gatt info */
 628         if (agp_copy_info(bridge, &gtt_info)) {
 629                 ERR_MSG("cannot get agp info\n");
 630                 agp_backend_release(bridge);
 631                 cleanup(dinfo);
 632                 return -ENODEV;
 633         }
 634
 635         if (MB(voffset) < stolen_size)
 636                 offset = (stolen_size >> 12);
 637         else
 638                 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
 639
 640         /* set the mem offsets - set them after the already used pages */
 641         if (dinfo->accel)
 642                 dinfo->ring.offset = offset + gtt_info.current_memory;
 643         if (dinfo->hwcursor)
 644                 dinfo->cursor.offset = offset +
 645                         + gtt_info.current_memory + (dinfo->ring.size >> 12);
 646         if (dinfo->fbmem_gart)
 647                 dinfo->fb.offset = offset +
 648                         + gtt_info.current_memory + (dinfo->ring.size >> 12)
 649                         + (dinfo->cursor.size >> 12);
 650
 651         /* Allocate memories (which aren't stolen) */
 652         /* Map the fb and MMIO regions */
 653         /* ioremap only up to the end of used aperture */
 654         dinfo->aperture.virtual = (u8 __iomem *)ioremap_wc
 655                 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
 656                  + dinfo->fb.size);
 657         if (!dinfo->aperture.virtual) {
 658                 ERR_MSG("Cannot remap FB region.\n");
 659                 agp_backend_release(bridge);
 660                 cleanup(dinfo);
 661                 return -ENODEV;
 662         }
 663
 664         dinfo->mmio_base =
 665                 (u8 __iomem *)ioremap(dinfo->mmio_base_phys,
 666                                               INTEL_REG_SIZE);
 667         if (!dinfo->mmio_base) {
 668                 ERR_MSG("Cannot remap MMIO region.\n");
 669                 agp_backend_release(bridge);
 670                 cleanup(dinfo);
 671                 return -ENODEV;
 672         }
 673
 674         if (dinfo->accel) {
 675                 if (!(dinfo->gtt_ring_mem =
 676                       agp_allocate_memory(bridge, dinfo->ring.size >> 12,
 677                                           AGP_NORMAL_MEMORY))) {
 678                         ERR_MSG("cannot allocate ring buffer memory\n");
 679                         agp_backend_release(bridge);
 680                         cleanup(dinfo);
 681                         return -ENOMEM;
 682                 }
 683                 if (agp_bind_memory(dinfo->gtt_ring_mem,
 684                                     dinfo->ring.offset)) {
 685                         ERR_MSG("cannot bind ring buffer memory\n");
 686                         agp_backend_release(bridge);
 687                         cleanup(dinfo);
 688                         return -EBUSY;
 689                 }
 690                 dinfo->ring.physical = dinfo->aperture.physical
 691                         + (dinfo->ring.offset << 12);
 692                 dinfo->ring.virtual  = dinfo->aperture.virtual
 693                         + (dinfo->ring.offset << 12);
 694                 dinfo->ring_head = 0;
 695         }
 696         if (dinfo->hwcursor) {
 697                 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
 698                         : AGP_NORMAL_MEMORY;
 699                 if (!(dinfo->gtt_cursor_mem =
 700                       agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
 701                                           agp_memtype))) {
 702                         ERR_MSG("cannot allocate cursor memory\n");
 703                         agp_backend_release(bridge);
 704                         cleanup(dinfo);
 705                         return -ENOMEM;
 706                 }
 707                 if (agp_bind_memory(dinfo->gtt_cursor_mem,
 708                                     dinfo->cursor.offset)) {
 709                         ERR_MSG("cannot bind cursor memory\n");
 710                         agp_backend_release(bridge);
 711                         cleanup(dinfo);
 712                         return -EBUSY;
 713                 }
 714                 if (dinfo->mobile)
 715                         dinfo->cursor.physical
 716                                 = dinfo->gtt_cursor_mem->physical;
 717                 else
 718                         dinfo->cursor.physical = dinfo->aperture.physical
 719                                 + (dinfo->cursor.offset << 12);
 720                 dinfo->cursor.virtual = dinfo->aperture.virtual
 721                         + (dinfo->cursor.offset << 12);
 722         }
 723         if (dinfo->fbmem_gart) {
 724                 if (!(dinfo->gtt_fb_mem =
 725                       agp_allocate_memory(bridge, dinfo->fb.size >> 12,
 726                                           AGP_NORMAL_MEMORY))) {
 727                         WRN_MSG("cannot allocate framebuffer memory - use "
 728                                 "the stolen one\n");
 729                         dinfo->fbmem_gart = 0;
 730                 }
 731                 if (agp_bind_memory(dinfo->gtt_fb_mem,
 732                                     dinfo->fb.offset)) {
 733                         WRN_MSG("cannot bind framebuffer memory - use "
 734                                 "the stolen one\n");
 735                         dinfo->fbmem_gart = 0;
 736                 }
 737         }
 738
 739         /* update framebuffer memory parameters */
 740         if (!dinfo->fbmem_gart)
 741                 dinfo->fb.offset = 0;   /* starts at offset 0 */
 742         dinfo->fb.physical = dinfo->aperture.physical
 743                 + (dinfo->fb.offset << 12);
 744         dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
 745         dinfo->fb_start = dinfo->fb.offset << 12;
 746
 747         /* release agpgart */
 748         agp_backend_release(bridge);
 749
 750         if (mtrr)
 751                 dinfo->wc_cookie = arch_phys_wc_add(dinfo->aperture.physical,
 752                                                     dinfo->aperture.size);
 753
 754         DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
 755                 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
 756                 dinfo->fb.virtual);
 757         DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
 758                 dinfo->mmio_base_phys, INTEL_REG_SIZE,
 759                 dinfo->mmio_base);
 760         DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
 761                 dinfo->ring.physical, dinfo->ring.size,
 762                 dinfo->ring.virtual);
 763         DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
 764                 dinfo->cursor.physical, dinfo->cursor.size,
 765                 dinfo->cursor.virtual, dinfo->cursor.offset,
 766                 dinfo->cursor.physical);
 767
 768         DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
 769                 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
 770         DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
 771
 772         if (probeonly)
 773                 bailout(dinfo);
 774
 775         /*
 776          * Check if the LVDS port or any DVO ports are enabled.  If so,
 777          * don't allow mode switching
 778          */
 779         dvo = intelfbhw_check_non_crt(dinfo);
 780         if (dvo) {
 781                 dinfo->fixed_mode = 1;
 782                 WRN_MSG("Non-CRT device is enabled ( ");
 783                 i = 0;
 784                 while (dvo) {
 785                         if (dvo & 1) {
 786                                 s = intelfbhw_dvo_to_string(1 << i);
 787                                 if (s)
 788                                         printk("%s ", s);
 789                         }
 790                         dvo >>= 1;
 791                         ++i;
 792                 }
 793                 printk(").  Disabling mode switching.\n");
 794         }
 795
 796         if (bailearly == 1)
 797                 bailout(dinfo);
 798
 799         if (FIXED_MODE(dinfo) &&
 800             screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
 801                 ERR_MSG("Video mode must be programmed at boot time.\n");
 802                 cleanup(dinfo);
 803                 return -ENODEV;
 804         }
 805
 806         if (bailearly == 2)
 807                 bailout(dinfo);
 808
 809         /* Initialise dinfo and related data. */
 810         /* If an initial mode was programmed at boot time, get its details. */
 811         if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
 812                 get_initial_mode(dinfo);
 813
 814         if (bailearly == 3)
 815                 bailout(dinfo);
 816
 817         if (FIXED_MODE(dinfo))  /* remap fb address */
 818                 update_dinfo(dinfo, &dinfo->initial_var);
 819
 820         if (bailearly == 4)
 821                 bailout(dinfo);
 822
 823
 824         if (intelfb_set_fbinfo(dinfo)) {
 825                 cleanup(dinfo);
 826                 return -ENODEV;
 827         }
 828
 829         if (bailearly == 5)
 830                 bailout(dinfo);
 831
 832 #ifdef CONFIG_FB_INTEL_I2C
 833         /* register I2C bus */
 834         intelfb_create_i2c_busses(dinfo);
 835 #endif
 836
 837         if (bailearly == 6)
 838                 bailout(dinfo);
 839
 840         pci_set_drvdata(pdev, dinfo);
 841
 842         /* Save the initial register state. */
 843         i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
 844                                     bailearly > 6 ? bailearly - 6 : 0);
 845         if (i != 0) {
 846                 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
 847                 bailout(dinfo);
 848         }
 849
 850         intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
 851
 852         if (bailearly == 18)
 853                 bailout(dinfo);
 854
 855         /* read active pipe */
 856         dinfo->pipe = intelfbhw_active_pipe(&dinfo->save_state);
 857
 858         /* Cursor initialisation */
 859         if (dinfo->hwcursor) {
 860                 intelfbhw_cursor_init(dinfo);
 861                 intelfbhw_cursor_reset(dinfo);
 862         }
 863
 864         if (bailearly == 19)
 865                 bailout(dinfo);
 866
 867         /* 2d acceleration init */
 868         if (dinfo->accel)
 869                 intelfbhw_2d_start(dinfo);
 870
 871         if (bailearly == 20)
 872                 bailout(dinfo);
 873
 874         if (noregister)
 875                 bailout(dinfo);
 876
 877         if (register_framebuffer(dinfo->info) < 0) {
 878                 ERR_MSG("Cannot register framebuffer.\n");
 879                 cleanup(dinfo);
 880                 return -ENODEV;
 881         }
 882
 883         dinfo->registered = 1;
 884         dinfo->open = 0;
 885
 886         init_waitqueue_head(&dinfo->vsync.wait);
 887         spin_lock_init(&dinfo->int_lock);
 888         dinfo->irq_flags = 0;
 889         dinfo->vsync.pan_display = 0;
 890         dinfo->vsync.pan_offset = 0;
 891
 892         return 0;
 893
 894 err_out_pixmap:
 895         fb_dealloc_cmap(&info->cmap);
 896 err_out_cmap:
 897         framebuffer_release(info);
 898         return -ENODEV;
 899 }
 900
 901 static void intelfb_pci_unregister(struct pci_dev *pdev)
 902 {
 903         struct intelfb_info *dinfo = pci_get_drvdata(pdev);
 904
 905         DBG_MSG("intelfb_pci_unregister\n");
 906
 907         if (!dinfo)
 908                 return;
 909
 910         cleanup(dinfo);
 911 }
 912
 913 /***************************************************************
 914  *                       helper functions                      *
 915  ***************************************************************/
 916
 917 __inline__ int intelfb_var_to_depth(const struct fb_var_screeninfo *var)
 918 {
 919         DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
 920                 var->bits_per_pixel, var->green.length);
 921
 922         switch (var->bits_per_pixel) {
 923         case 16:
 924                 return (var->green.length == 6) ? 16 : 15;
 925         case 32:
 926                 return 24;
 927         default:
 928                 return var->bits_per_pixel;
 929         }
 930 }
 931
 932
 933 static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
 934 {
 935         int xtot = var->xres + var->left_margin + var->right_margin +
 936                    var->hsync_len;
 937         int ytot = var->yres + var->upper_margin + var->lower_margin +
 938                    var->vsync_len;
 939
 940         return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
 941 }
 942
 943 /***************************************************************
 944  *                Various initialisation functions             *
 945  ***************************************************************/
 946
 947 static void get_initial_mode(struct intelfb_info *dinfo)
 948 {
 949         struct fb_var_screeninfo *var;
 950         int xtot, ytot;
 951
 952         DBG_MSG("get_initial_mode\n");
 953
 954         dinfo->initial_vga = 1;
 955         dinfo->initial_fb_base = screen_info.lfb_base;
 956         dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
 957         dinfo->initial_pitch = screen_info.lfb_linelength;
 958
 959         var = &dinfo->initial_var;
 960         memset(var, 0, sizeof(*var));
 961         var->xres = screen_info.lfb_width;
 962         var->yres = screen_info.lfb_height;
 963         var->bits_per_pixel = screen_info.lfb_depth;
 964         switch (screen_info.lfb_depth) {
 965         case 15:
 966                 var->bits_per_pixel = 16;
 967                 break;
 968         case 24:
 969                 var->bits_per_pixel = 32;
 970                 break;
 971         }
 972
 973         DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
 974                 dinfo->initial_fb_base, dinfo->initial_video_ram,
 975                 BtoKB(dinfo->initial_video_ram));
 976
 977         DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
 978                 var->xres, var->yres, var->bits_per_pixel,
 979                 dinfo->initial_pitch);
 980
 981         /* Dummy timing values (assume 60Hz) */
 982         var->left_margin = (var->xres / 8) & 0xf8;
 983         var->right_margin = 32;
 984         var->upper_margin = 16;
 985         var->lower_margin = 4;
 986         var->hsync_len = (var->xres / 8) & 0xf8;
 987         var->vsync_len = 4;
 988
 989         xtot = var->xres + var->left_margin +
 990                 var->right_margin + var->hsync_len;
 991         ytot = var->yres + var->upper_margin +
 992                 var->lower_margin + var->vsync_len;
 993         var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
 994
 995         var->height = -1;
 996         var->width = -1;
 997
 998         if (var->bits_per_pixel > 8) {
 999                 var->red.offset = screen_info.red_pos;
1000                 var->red.length = screen_info.red_size;
1001                 var->green.offset = screen_info.green_pos;
1002                 var->green.length = screen_info.green_size;
1003                 var->blue.offset = screen_info.blue_pos;
1004                 var->blue.length = screen_info.blue_size;
1005                 var->transp.offset = screen_info.rsvd_pos;
1006                 var->transp.length = screen_info.rsvd_size;
1007         } else {
1008                 var->red.length = 8;
1009                 var->green.length = 8;
1010                 var->blue.length = 8;
1011         }
1012 }
1013
1014 static int intelfb_init_var(struct intelfb_info *dinfo)
1015 {
1016         struct fb_var_screeninfo *var;
1017         int msrc = 0;
1018
1019         DBG_MSG("intelfb_init_var\n");
1020
1021         var = &dinfo->info->var;
1022         if (FIXED_MODE(dinfo)) {
1023                 memcpy(var, &dinfo->initial_var,
1024                        sizeof(struct fb_var_screeninfo));
1025                 msrc = 5;
1026         } else {
1027                 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1028                 u8 *edid_d = NULL;
1029
1030                 if (edid_s) {
1031                         edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1032
1033                         if (edid_d) {
1034                                 fb_edid_to_monspecs(edid_d,
1035                                                     &dinfo->info->monspecs);
1036                                 kfree(edid_d);
1037                         }
1038                 }
1039
1040                 if (mode) {
1041                         printk("intelfb: Looking for mode in private "
1042                                "database\n");
1043                         msrc = fb_find_mode(var, dinfo->info, mode,
1044                                             dinfo->info->monspecs.modedb,
1045                                             dinfo->info->monspecs.modedb_len,
1046                                             NULL, 0);
1047
1048                         if (msrc && msrc > 1) {
1049                                 printk("intelfb: No mode in private database, "
1050                                        "intelfb: looking for mode in global "
1051                                        "database ");
1052                                 msrc = fb_find_mode(var, dinfo->info, mode,
1053                                                     NULL, 0, NULL, 0);
1054
1055                                 if (msrc)
1056                                         msrc |= 8;
1057                         }
1058
1059                 }
1060
1061                 if (!msrc)
1062                         msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1063                                             NULL, 0, NULL, 0);
1064         }
1065
1066         if (!msrc) {
1067                 ERR_MSG("Cannot find a suitable video mode.\n");
1068                 return 1;
1069         }
1070
1071         INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1072                 var->bits_per_pixel, var_to_refresh(var));
1073
1074         DBG_MSG("Initial video mode is from %d.\n", msrc);
1075
1076 #if ALLOCATE_FOR_PANNING
1077         /* Allow use of half of the video ram for panning */
1078         var->xres_virtual = var->xres;
1079         var->yres_virtual =
1080                 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1081         if (var->yres_virtual < var->yres)
1082                 var->yres_virtual = var->yres;
1083 #else
1084         var->yres_virtual = var->yres;
1085 #endif
1086
1087         if (dinfo->accel)
1088                 var->accel_flags |= FB_ACCELF_TEXT;
1089         else
1090                 var->accel_flags &= ~FB_ACCELF_TEXT;
1091
1092         return 0;
1093 }
1094
1095 static int intelfb_set_fbinfo(struct intelfb_info *dinfo)
1096 {
1097         struct fb_info *info = dinfo->info;
1098
1099         DBG_MSG("intelfb_set_fbinfo\n");
1100
1101         info->flags = FBINFO_FLAG_DEFAULT;
1102         info->fbops = &intel_fb_ops;
1103         info->pseudo_palette = dinfo->pseudo_palette;
1104
1105         info->pixmap.size = 64*1024;
1106         info->pixmap.buf_align = 8;
1107         info->pixmap.access_align = 32;
1108         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1109
1110         if (intelfb_init_var(dinfo))
1111                 return 1;
1112
1113         info->pixmap.scan_align = 1;
1114         strcpy(info->fix.id, dinfo->name);
1115         info->fix.smem_start = dinfo->fb.physical;
1116         info->fix.smem_len = dinfo->fb.size;
1117         info->fix.type = FB_TYPE_PACKED_PIXELS;
1118         info->fix.type_aux = 0;
1119         info->fix.xpanstep = 8;
1120         info->fix.ypanstep = 1;
1121         info->fix.ywrapstep = 0;
1122         info->fix.mmio_start = dinfo->mmio_base_phys;
1123         info->fix.mmio_len = INTEL_REG_SIZE;
1124         info->fix.accel = FB_ACCEL_I830;
1125         update_dinfo(dinfo, &info->var);
1126
1127         return 0;
1128 }
1129
1130 /* Update dinfo to match the active video mode. */
1131 static void update_dinfo(struct intelfb_info *dinfo,
1132                          struct fb_var_screeninfo *var)
1133 {
1134         DBG_MSG("update_dinfo\n");
1135
1136         dinfo->bpp = var->bits_per_pixel;
1137         dinfo->depth = intelfb_var_to_depth(var);
1138         dinfo->xres = var->xres;
1139         dinfo->yres = var->xres;
1140         dinfo->pixclock = var->pixclock;
1141
1142         dinfo->info->fix.visual = dinfo->visual;
1143         dinfo->info->fix.line_length = dinfo->pitch;
1144
1145         switch (dinfo->bpp) {
1146         case 8:
1147                 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1148                 dinfo->pitch = var->xres_virtual;
1149                 break;
1150         case 16:
1151                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1152                 dinfo->pitch = var->xres_virtual * 2;
1153                 break;
1154         case 32:
1155                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1156                 dinfo->pitch = var->xres_virtual * 4;
1157                 break;
1158         }
1159
1160         /* Make sure the line length is a aligned correctly. */
1161         if (IS_I9XX(dinfo))
1162                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1163         else
1164                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1165
1166         if (FIXED_MODE(dinfo))
1167                 dinfo->pitch = dinfo->initial_pitch;
1168
1169         dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1170         dinfo->info->fix.line_length = dinfo->pitch;
1171         dinfo->info->fix.visual = dinfo->visual;
1172 }
1173
1174 /* fbops functions */
1175
1176 /***************************************************************
1177  *                       fbdev interface                       *
1178  ***************************************************************/
1179
1180 static int intelfb_open(struct fb_info *info, int user)
1181 {
1182         struct intelfb_info *dinfo = GET_DINFO(info);
1183
1184         if (user)
1185                 dinfo->open++;
1186
1187         return 0;
1188 }
1189
1190 static int intelfb_release(struct fb_info *info, int user)
1191 {
1192         struct intelfb_info *dinfo = GET_DINFO(info);
1193
1194         if (user) {
1195                 dinfo->open--;
1196                 msleep(1);
1197                 if (!dinfo->open)
1198                         intelfbhw_disable_irq(dinfo);
1199         }
1200
1201         return 0;
1202 }
1203
1204 static int intelfb_check_var(struct fb_var_screeninfo *var,
1205                              struct fb_info *info)
1206 {
1207         int change_var = 0;
1208         struct fb_var_screeninfo v;
1209         struct intelfb_info *dinfo;
1210         static int first = 1;
1211         int i;
1212         /* Good pitches to allow tiling.  Don't care about pitches < 1024. */
1213         static const int pitches[] = {
1214                 128 * 8,
1215                 128 * 16,
1216                 128 * 32,
1217                 128 * 64,
1218                 0
1219         };
1220
1221         DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1222
1223         dinfo = GET_DINFO(info);
1224
1225         if (!var->pixclock)
1226                 return -EINVAL;
1227
1228         /* update the pitch */
1229         if (intelfbhw_validate_mode(dinfo, var) != 0)
1230                 return -EINVAL;
1231
1232         v = *var;
1233
1234         for (i = 0; pitches[i] != 0; i++) {
1235                 if (pitches[i] >= v.xres_virtual) {
1236                         v.xres_virtual = pitches[i];
1237                         break;
1238                 }
1239         }
1240
1241         /* Check for a supported bpp. */
1242         if (v.bits_per_pixel <= 8)
1243                 v.bits_per_pixel = 8;
1244         else if (v.bits_per_pixel <= 16) {
1245                 if (v.bits_per_pixel == 16)
1246                         v.green.length = 6;
1247                 v.bits_per_pixel = 16;
1248         } else if (v.bits_per_pixel <= 32)
1249                 v.bits_per_pixel = 32;
1250         else
1251                 return -EINVAL;
1252
1253         change_var = ((info->var.xres != var->xres) ||
1254                       (info->var.yres != var->yres) ||
1255                       (info->var.xres_virtual != var->xres_virtual) ||
1256                       (info->var.yres_virtual != var->yres_virtual) ||
1257                       (info->var.bits_per_pixel != var->bits_per_pixel) ||
1258                       memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1259                       memcmp(&info->var.green, &var->green,
1260                              sizeof(var->green)) ||
1261                       memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1262
1263         if (FIXED_MODE(dinfo) &&
1264             (change_var ||
1265              var->yres_virtual > dinfo->initial_var.yres_virtual ||
1266              var->yres_virtual < dinfo->initial_var.yres ||
1267              var->xoffset || var->nonstd)) {
1268                 if (first) {
1269                         ERR_MSG("Changing the video mode is not supported.\n");
1270                         first = 0;
1271                 }
1272                 return -EINVAL;
1273         }
1274
1275         switch (intelfb_var_to_depth(&v)) {
1276         case 8:
1277                 v.red.offset = v.green.offset = v.blue.offset = 0;
1278                 v.red.length = v.green.length = v.blue.length = 8;
1279                 v.transp.offset = v.transp.length = 0;
1280                 break;
1281         case 15:
1282                 v.red.offset = 10;
1283                 v.green.offset = 5;
1284                 v.blue.offset = 0;
1285                 v.red.length = v.green.length = v.blue.length = 5;
1286                 v.transp.offset = v.transp.length = 0;
1287                 break;
1288         case 16:
1289                 v.red.offset = 11;
1290                 v.green.offset = 5;
1291                 v.blue.offset = 0;
1292                 v.red.length = 5;
1293                 v.green.length = 6;
1294                 v.blue.length = 5;
1295                 v.transp.offset = v.transp.length = 0;
1296                 break;
1297         case 24:
1298                 v.red.offset = 16;
1299                 v.green.offset = 8;
1300                 v.blue.offset = 0;
1301                 v.red.length = v.green.length = v.blue.length = 8;
1302                 v.transp.offset = v.transp.length = 0;
1303                 break;
1304         case 32:
1305                 v.red.offset = 16;
1306                 v.green.offset = 8;
1307                 v.blue.offset = 0;
1308                 v.red.length = v.green.length = v.blue.length = 8;
1309                 v.transp.offset = 24;
1310                 v.transp.length = 8;
1311                 break;
1312         }
1313
1314         if (v.xoffset > v.xres_virtual - v.xres)
1315                 v.xoffset = v.xres_virtual - v.xres;
1316         if (v.yoffset > v.yres_virtual - v.yres)
1317                 v.yoffset = v.yres_virtual - v.yres;
1318
1319         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1320                           v.transp.msb_right = 0;
1321
1322         *var = v;
1323
1324         return 0;
1325 }
1326
1327 static int intelfb_set_par(struct fb_info *info)
1328 {
1329         struct intelfb_hwstate *hw;
1330         struct intelfb_info *dinfo = GET_DINFO(info);
1331
1332         if (FIXED_MODE(dinfo)) {
1333                 ERR_MSG("Changing the video mode is not supported.\n");
1334                 return -EINVAL;
1335         }
1336
1337         hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1338         if (!hw)
1339                 return -ENOMEM;
1340
1341         DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1342                 info->var.yres, info->var.bits_per_pixel);
1343
1344         /*
1345          * Disable VCO prior to timing register change.
1346          */
1347         OUTREG(DPLL_A, INREG(DPLL_A) & ~DPLL_VCO_ENABLE);
1348
1349         intelfb_blank(FB_BLANK_POWERDOWN, info);
1350
1351         if (ACCEL(dinfo, info))
1352                 intelfbhw_2d_stop(dinfo);
1353
1354         memcpy(hw, &dinfo->save_state, sizeof(*hw));
1355         if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1356                 goto invalid_mode;
1357         if (intelfbhw_program_mode(dinfo, hw, 0))
1358                 goto invalid_mode;
1359
1360 #if REGDUMP > 0
1361         intelfbhw_read_hw_state(dinfo, hw, 0);
1362         intelfbhw_print_hw_state(dinfo, hw);
1363 #endif
1364
1365         update_dinfo(dinfo, &info->var);
1366
1367         if (ACCEL(dinfo, info))
1368                 intelfbhw_2d_start(dinfo);
1369
1370         intelfb_pan_display(&info->var, info);
1371
1372         intelfb_blank(FB_BLANK_UNBLANK, info);
1373
1374         if (ACCEL(dinfo, info)) {
1375                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1376                 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1377                 FBINFO_HWACCEL_IMAGEBLIT;
1378         } else
1379                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1380
1381         kfree(hw);
1382         return 0;
1383 invalid_mode:
1384         kfree(hw);
1385         return -EINVAL;
1386 }
1387
1388 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1389                              unsigned blue, unsigned transp,
1390                              struct fb_info *info)
1391 {
1392         struct intelfb_info *dinfo = GET_DINFO(info);
1393
1394 #if VERBOSE > 0
1395         DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1396 #endif
1397
1398         if (regno > 255)
1399                 return 1;
1400
1401         if (dinfo->depth == 8) {
1402                 red >>= 8;
1403                 green >>= 8;
1404                 blue >>= 8;
1405
1406                 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1407                                     transp);
1408         }
1409
1410         if (regno < 16) {
1411                 switch (dinfo->depth) {
1412                 case 15:
1413                         dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1414                                 ((green & 0xf800) >>  6) |
1415                                 ((blue & 0xf800) >> 11);
1416                         break;
1417                 case 16:
1418                         dinfo->pseudo_palette[regno] = (red & 0xf800) |
1419                                 ((green & 0xfc00) >>  5) |
1420                                 ((blue  & 0xf800) >> 11);
1421                         break;
1422                 case 24:
1423                         dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1424                                 (green & 0xff00) |
1425                                 ((blue  & 0xff00) >> 8);
1426                         break;
1427                 }
1428         }
1429
1430         return 0;
1431 }
1432
1433 static int intelfb_blank(int blank, struct fb_info *info)
1434 {
1435         intelfbhw_do_blank(blank, info);
1436         return 0;
1437 }
1438
1439 static int intelfb_pan_display(struct fb_var_screeninfo *var,
1440                                struct fb_info *info)
1441 {
1442         intelfbhw_pan_display(var, info);
1443         return 0;
1444 }
1445
1446 /* When/if we have our own ioctls. */
1447 static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1448                          unsigned long arg)
1449 {
1450         int retval = 0;
1451         struct intelfb_info *dinfo = GET_DINFO(info);
1452         u32 pipe = 0;
1453
1454         switch (cmd) {
1455                 case FBIO_WAITFORVSYNC:
1456                         if (get_user(pipe, (__u32 __user *)arg))
1457                                 return -EFAULT;
1458
1459                         retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1460                         break;
1461                 default:
1462                         break;
1463         }
1464
1465         return retval;
1466 }
1467
1468 static void intelfb_fillrect (struct fb_info *info,
1469                               const struct fb_fillrect *rect)
1470 {
1471         struct intelfb_info *dinfo = GET_DINFO(info);
1472         u32 rop, color;
1473
1474 #if VERBOSE > 0
1475         DBG_MSG("intelfb_fillrect\n");
1476 #endif
1477
1478         if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1479                 cfb_fillrect(info, rect);
1480                 return;
1481         }
1482
1483         if (rect->rop == ROP_COPY)
1484                 rop = PAT_ROP_GXCOPY;
1485         else /* ROP_XOR */
1486                 rop = PAT_ROP_GXXOR;
1487
1488         if (dinfo->depth != 8)
1489                 color = dinfo->pseudo_palette[rect->color];
1490         else
1491                 color = rect->color;
1492
1493         intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1494                               rect->width, rect->height, color,
1495                               dinfo->pitch, info->var.bits_per_pixel,
1496                               rop);
1497 }
1498
1499 static void intelfb_copyarea(struct fb_info *info,
1500                              const struct fb_copyarea *region)
1501 {
1502         struct intelfb_info *dinfo = GET_DINFO(info);
1503
1504 #if VERBOSE > 0
1505         DBG_MSG("intelfb_copyarea\n");
1506 #endif
1507
1508         if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1509                 cfb_copyarea(info, region);
1510                 return;
1511         }
1512
1513         intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1514                             region->dy, region->width, region->height,
1515                             dinfo->pitch, info->var.bits_per_pixel);
1516 }
1517
1518 static void intelfb_imageblit(struct fb_info *info,
1519                               const struct fb_image *image)
1520 {
1521         struct intelfb_info *dinfo = GET_DINFO(info);
1522         u32 fgcolor, bgcolor;
1523
1524 #if VERBOSE > 0
1525         DBG_MSG("intelfb_imageblit\n");
1526 #endif
1527
1528         if (!ACCEL(dinfo, info) || dinfo->depth == 4
1529             || image->depth != 1) {
1530                 cfb_imageblit(info, image);
1531                 return;
1532         }
1533
1534         if (dinfo->depth != 8) {
1535                 fgcolor = dinfo->pseudo_palette[image->fg_color];
1536                 bgcolor = dinfo->pseudo_palette[image->bg_color];
1537         } else {
1538                 fgcolor = image->fg_color;
1539                 bgcolor = image->bg_color;
1540         }
1541
1542         if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1543                                     image->height, image->data,
1544                                     image->dx, image->dy,
1545                                     dinfo->pitch, info->var.bits_per_pixel)) {
1546                 cfb_imageblit(info, image);
1547                 return;
1548         }
1549 }
1550
1551 static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1552 {
1553         struct intelfb_info *dinfo = GET_DINFO(info);
1554         u32 physical;
1555 #if VERBOSE > 0
1556         DBG_MSG("intelfb_cursor\n");
1557 #endif
1558
1559         if (!dinfo->hwcursor)
1560                 return -ENODEV;
1561
1562         intelfbhw_cursor_hide(dinfo);
1563
1564         /* If XFree killed the cursor - restore it */
1565         physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1566                    (dinfo->cursor.offset << 12);
1567
1568         if (INREG(CURSOR_A_BASEADDR) != physical) {
1569                 u32 fg, bg;
1570
1571                 DBG_MSG("the cursor was killed - restore it !!\n");
1572                 DBG_MSG("size %d, %d   pos %d, %d\n",
1573                         cursor->image.width, cursor->image.height,
1574                         cursor->image.dx, cursor->image.dy);
1575
1576                 intelfbhw_cursor_init(dinfo);
1577                 intelfbhw_cursor_reset(dinfo);
1578                 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1579                                         cursor->image.dy);
1580
1581                 if (dinfo->depth != 8) {
1582                         fg =dinfo->pseudo_palette[cursor->image.fg_color];
1583                         bg =dinfo->pseudo_palette[cursor->image.bg_color];
1584                 } else {
1585                         fg = cursor->image.fg_color;
1586                         bg = cursor->image.bg_color;
1587                 }
1588                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1589                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1590                                       cursor->image.height,
1591                                       dinfo->cursor_src);
1592
1593                 if (cursor->enable)
1594                         intelfbhw_cursor_show(dinfo);
1595                 return 0;
1596         }
1597
1598         if (cursor->set & FB_CUR_SETPOS) {
1599                 u32 dx, dy;
1600
1601                 dx = cursor->image.dx - info->var.xoffset;
1602                 dy = cursor->image.dy - info->var.yoffset;
1603
1604                 intelfbhw_cursor_setpos(dinfo, dx, dy);
1605         }
1606
1607         if (cursor->set & FB_CUR_SETSIZE) {
1608                 if (cursor->image.width > 64 || cursor->image.height > 64)
1609                         return -ENXIO;
1610
1611                 intelfbhw_cursor_reset(dinfo);
1612         }
1613
1614         if (cursor->set & FB_CUR_SETCMAP) {
1615                 u32 fg, bg;
1616
1617                 if (dinfo->depth != 8) {
1618                         fg = dinfo->pseudo_palette[cursor->image.fg_color];
1619                         bg = dinfo->pseudo_palette[cursor->image.bg_color];
1620                 } else {
1621                         fg = cursor->image.fg_color;
1622                         bg = cursor->image.bg_color;
1623                 }
1624
1625                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1626         }
1627
1628         if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1629                 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1630                 u32 size = s_pitch * cursor->image.height;
1631                 u8 *dat = (u8 *) cursor->image.data;
1632                 u8 *msk = (u8 *) cursor->mask;
1633                 u8 src[64];
1634                 u32 i;
1635
1636                 if (cursor->image.depth != 1)
1637                         return -ENXIO;
1638
1639                 switch (cursor->rop) {
1640                 case ROP_XOR:
1641                         for (i = 0; i < size; i++)
1642                                 src[i] = dat[i] ^ msk[i];
1643                         break;
1644                 case ROP_COPY:
1645                 default:
1646                         for (i = 0; i < size; i++)
1647                                 src[i] = dat[i] & msk[i];
1648                         break;
1649                 }
1650
1651                 /* save the bitmap to restore it when XFree will
1652                    make the cursor dirty */
1653                 memcpy(dinfo->cursor_src, src, size);
1654
1655                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1656                                       cursor->image.height, src);
1657         }
1658
1659         if (cursor->enable)
1660                 intelfbhw_cursor_show(dinfo);
1661
1662         return 0;
1663 }
1664
1665 static int intelfb_sync(struct fb_info *info)
1666 {
1667         struct intelfb_info *dinfo = GET_DINFO(info);
1668
1669 #if VERBOSE > 0
1670         DBG_MSG("intelfb_sync\n");
1671 #endif
1672
1673         if (dinfo->ring_lockup)
1674                 return 0;
1675
1676         intelfbhw_do_sync(dinfo);
1677         return 0;
1678 }
1679