SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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/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 #ifdef CONFIG_MTRR
 129 #include <asm/mtrr.h>
 130 #endif
 131
 132 #include "intelfb.h"
 133 #include "intelfbhw.h"
 134 #include "../edid.h"
 135
 136 static void __devinit get_initial_mode(struct intelfb_info *dinfo);
 137 static void update_dinfo(struct intelfb_info *dinfo,
 138                          struct fb_var_screeninfo *var);
 139 static int intelfb_open(struct fb_info *info, int user);
 140 static int intelfb_release(struct fb_info *info, int user);
 141 static int intelfb_check_var(struct fb_var_screeninfo *var,
 142                              struct fb_info *info);
 143 static int intelfb_set_par(struct fb_info *info);
 144 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 145                              unsigned blue, unsigned transp,
 146                              struct fb_info *info);
 147
 148 static int intelfb_blank(int blank, struct fb_info *info);
 149 static int intelfb_pan_display(struct fb_var_screeninfo *var,
 150                                struct fb_info *info);
 151
 152 static void intelfb_fillrect(struct fb_info *info,
 153                              const struct fb_fillrect *rect);
 154 static void intelfb_copyarea(struct fb_info *info,
 155                              const struct fb_copyarea *region);
 156 static void intelfb_imageblit(struct fb_info *info,
 157                               const struct fb_image *image);
 158 static int intelfb_cursor(struct fb_info *info,
 159                            struct fb_cursor *cursor);
 160
 161 static int intelfb_sync(struct fb_info *info);
 162
 163 static int intelfb_ioctl(struct fb_info *info,
 164                          unsigned int cmd, unsigned long arg);
 165
 166 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
 167                                           const struct pci_device_id *ent);
 168 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
 169 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
 170
 171 /*
 172  * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
 173  * mobile chipsets from being registered.
 174  */
 175 #if DETECT_VGA_CLASS_ONLY
 176 #define INTELFB_CLASS_MASK ~0 << 8
 177 #else
 178 #define INTELFB_CLASS_MASK 0
 179 #endif
 180
 181 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
 182         { 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 },
 183         { 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 },
 184         { 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 },
 185         { 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 },
 186         { 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 },
 187         { 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 },
 188         { 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 },
 189         { 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 },
 190         { 0, }
 191 };
 192
 193 /* Global data */
 194 static int num_registered = 0;
 195
 196 /* fb ops */
 197 static 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 =       __devexit_p(intelfb_pci_unregister)
 220 };
 221
 222 /* Module description/parameters */
 223 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
 224               "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
 225 MODULE_DESCRIPTION(
 226         "Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS " chipsets");
 227 MODULE_LICENSE("Dual BSD/GPL");
 228 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
 229
 230 static int accel        = 1;
 231 static int vram         = 4;
 232 static int hwcursor     = 0;
 233 static int mtrr         = 1;
 234 static int fixed        = 0;
 235 static int noinit       = 0;
 236 static int noregister   = 0;
 237 static int probeonly    = 0;
 238 static int 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, bool, 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 *
 275 get_opt_string(const char *this_opt, const char *name)
 276 {
 277         const char *p;
 278         int i;
 279         char *ret;
 280
 281         p = OPT_STRVAL(this_opt, name);
 282         i = 0;
 283         while (p[i] && p[i] != ' ' && p[i] != ',')
 284                 i++;
 285         ret = kmalloc(i + 1, GFP_KERNEL);
 286         if (ret) {
 287                 strncpy(ret, p, i);
 288                 ret[i] = '\0';
 289         }
 290         return ret;
 291 }
 292
 293 static __inline__ int
 294 get_opt_int(const char *this_opt, const char *name, int *ret)
 295 {
 296         if (!ret)
 297                 return 0;
 298
 299         if (!OPT_EQUAL(this_opt, name))
 300                 return 0;
 301
 302         *ret = OPT_INTVAL(this_opt, name);
 303         return 1;
 304 }
 305
 306 static __inline__ int
 307 get_opt_bool(const char *this_opt, const char *name, int *ret)
 308 {
 309         if (!ret)
 310                 return 0;
 311
 312         if (OPT_EQUAL(this_opt, name)) {
 313                 if (this_opt[strlen(name)] == '=')
 314                         *ret = simple_strtoul(this_opt + strlen(name) + 1,
 315                                               NULL, 0);
 316                 else
 317                         *ret = 1;
 318         } else {
 319                 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
 320                         *ret = 0;
 321                 else
 322                         return 0;
 323         }
 324         return 1;
 325 }
 326
 327 static int __init
 328 intelfb_setup(char *options)
 329 {
 330         char *this_opt;
 331
 332         DBG_MSG("intelfb_setup\n");
 333
 334         if (!options || !*options) {
 335                 DBG_MSG("no options\n");
 336                 return 0;
 337         } else
 338                 DBG_MSG("options: %s\n", options);
 339
 340         /*
 341          * These are the built-in options analogous to the module parameters
 342          * defined above.
 343          *
 344          * The syntax is:
 345          *
 346          *    video=intelfb:[mode][,<param>=<val>] ...
 347          *
 348          * e.g.,
 349          *
 350          *    video=intelfb:1024x768-16@75,accel=0
 351          */
 352
 353         while ((this_opt = strsep(&options, ","))) {
 354                 if (!*this_opt)
 355                         continue;
 356                 if (get_opt_bool(this_opt, "accel", &accel))
 357                         ;
 358                 else if (get_opt_int(this_opt, "vram", &vram))
 359                         ;
 360                 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
 361                         ;
 362                 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
 363                         ;
 364                 else if (get_opt_bool(this_opt, "fixed", &fixed))
 365                         ;
 366                 else if (get_opt_bool(this_opt, "init", &noinit))
 367                         noinit = !noinit;
 368                 else if (OPT_EQUAL(this_opt, "mode="))
 369                         mode = get_opt_string(this_opt, "mode=");
 370                 else
 371                         mode = this_opt;
 372         }
 373
 374         return 0;
 375 }
 376
 377 #endif
 378
 379 static int __init
 380 intelfb_init(void)
 381 {
 382 #ifndef MODULE
 383         char *option = NULL;
 384 #endif
 385
 386         DBG_MSG("intelfb_init\n");
 387
 388         INF_MSG("Framebuffer driver for "
 389                 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
 390         INF_MSG("Version " INTELFB_VERSION "\n");
 391
 392         if (idonly)
 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
 405 intelfb_exit(void)
 406 {
 407         DBG_MSG("intelfb_exit\n");
 408         pci_unregister_driver(&intelfb_driver);
 409 }
 410
 411 module_init(intelfb_init);
 412 module_exit(intelfb_exit);
 413
 414 /***************************************************************
 415  *                     mtrr support functions                  *
 416  ***************************************************************/
 417
 418 #ifdef CONFIG_MTRR
 419 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
 420 {
 421         dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
 422                                    dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
 423         if (dinfo->mtrr_reg < 0) {
 424                 ERR_MSG("unable to set MTRR\n");
 425                 return;
 426         }
 427         dinfo->has_mtrr = 1;
 428 }
 429 static inline void unset_mtrr(struct intelfb_info *dinfo)
 430 {
 431         if (dinfo->has_mtrr)
 432                 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
 433                          dinfo->aperture.size);
 434 }
 435 #else
 436 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
 437
 438 #define unset_mtrr(x) do { } while (0)
 439 #endif /* CONFIG_MTRR */
 440
 441 /***************************************************************
 442  *                        driver init / cleanup                *
 443  ***************************************************************/
 444
 445 static void
 446 cleanup(struct intelfb_info *dinfo)
 447 {
 448         DBG_MSG("cleanup\n");
 449
 450         if (!dinfo)
 451                 return;
 452
 453         intelfbhw_disable_irq(dinfo);
 454
 455         fb_dealloc_cmap(&dinfo->info->cmap);
 456         kfree(dinfo->info->pixmap.addr);
 457
 458         if (dinfo->registered)
 459                 unregister_framebuffer(dinfo->info);
 460
 461         unset_mtrr(dinfo);
 462
 463         if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
 464                 agp_unbind_memory(dinfo->gtt_fb_mem);
 465                 agp_free_memory(dinfo->gtt_fb_mem);
 466         }
 467         if (dinfo->gtt_cursor_mem) {
 468                 agp_unbind_memory(dinfo->gtt_cursor_mem);
 469                 agp_free_memory(dinfo->gtt_cursor_mem);
 470         }
 471         if (dinfo->gtt_ring_mem) {
 472                 agp_unbind_memory(dinfo->gtt_ring_mem);
 473                 agp_free_memory(dinfo->gtt_ring_mem);
 474         }
 475
 476 #ifdef CONFIG_FB_INTEL_I2C
 477         /* un-register I2C bus */
 478         intelfb_delete_i2c_busses(dinfo);
 479 #endif
 480
 481         if (dinfo->mmio_base)
 482                 iounmap((void __iomem *)dinfo->mmio_base);
 483         if (dinfo->aperture.virtual)
 484                 iounmap((void __iomem *)dinfo->aperture.virtual);
 485
 486         if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
 487                 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
 488         if (dinfo->flag & INTELFB_FB_ACQUIRED)
 489                 release_mem_region(dinfo->aperture.physical,
 490                                    dinfo->aperture.size);
 491         framebuffer_release(dinfo->info);
 492 }
 493
 494 #define bailout(dinfo) do {                                             \
 495         DBG_MSG("bailout\n");                                           \
 496         cleanup(dinfo);                                                 \
 497         INF_MSG("Not going to register framebuffer, exiting...\n");     \
 498         return -ENODEV;                                                 \
 499 } while (0)
 500
 501
 502 static int __devinit
 503 intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
 504 {
 505         struct fb_info *info;
 506         struct intelfb_info *dinfo;
 507         int i, err, dvo;
 508         int aperture_size, stolen_size;
 509         struct agp_kern_info gtt_info;
 510         int agp_memtype;
 511         const char *s;
 512         struct agp_bridge_data *bridge;
 513         int aperture_bar = 0;
 514         int mmio_bar = 1;
 515         int offset;
 516
 517         DBG_MSG("intelfb_pci_register\n");
 518
 519         num_registered++;
 520         if (num_registered != 1) {
 521                 ERR_MSG("Attempted to register %d devices "
 522                         "(should be only 1).\n", num_registered);
 523                 return -ENODEV;
 524         }
 525
 526         info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
 527         if (!info) {
 528                 ERR_MSG("Could not allocate memory for intelfb_info.\n");
 529                 return -ENODEV;
 530         }
 531         if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
 532                 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
 533                 goto err_out_cmap;
 534                 return -ENODEV;
 535         }
 536
 537         dinfo = info->par;
 538         dinfo->info  = info;
 539         dinfo->fbops = &intel_fb_ops;
 540         dinfo->pdev  = pdev;
 541
 542         /* Reserve pixmap space. */
 543         info->pixmap.addr = kmalloc(64 * 1024, GFP_KERNEL);
 544         if (info->pixmap.addr == NULL) {
 545                 ERR_MSG("Cannot reserve pixmap memory.\n");
 546                 goto err_out_pixmap;
 547         }
 548         memset(info->pixmap.addr, 0, 64 * 1024);
 549
 550         /* set early this option because it could be changed by tv encoder
 551            driver */
 552         dinfo->fixed_mode = fixed;
 553
 554         /* Enable device. */
 555         if ((err = pci_enable_device(pdev))) {
 556                 ERR_MSG("Cannot enable device.\n");
 557                 cleanup(dinfo);
 558                 return -ENODEV;
 559         }
 560
 561         /* Set base addresses. */
 562         if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
 563             (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
 564             (ent->device == PCI_DEVICE_ID_INTEL_945G)  ||
 565             (ent->device == PCI_DEVICE_ID_INTEL_945GM)) {
 566                 aperture_bar = 2;
 567                 mmio_bar = 0;
 568         }
 569         dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
 570         dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
 571         dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
 572         DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
 573                 (unsigned long long)pci_resource_start(pdev, aperture_bar),
 574                 (unsigned long long)pci_resource_len(pdev, aperture_bar),
 575                 (unsigned long long)pci_resource_start(pdev, mmio_bar),
 576                 (unsigned long long)pci_resource_len(pdev, mmio_bar));
 577
 578         /* Reserve the fb and MMIO regions */
 579         if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
 580                                 INTELFB_MODULE_NAME)) {
 581                 ERR_MSG("Cannot reserve FB region.\n");
 582                 cleanup(dinfo);
 583                 return -ENODEV;
 584         }
 585
 586         dinfo->flag |= INTELFB_FB_ACQUIRED;
 587
 588         if (!request_mem_region(dinfo->mmio_base_phys,
 589                                 INTEL_REG_SIZE,
 590                                 INTELFB_MODULE_NAME)) {
 591                 ERR_MSG("Cannot reserve MMIO region.\n");
 592                 cleanup(dinfo);
 593                 return -ENODEV;
 594         }
 595
 596         dinfo->flag |= INTELFB_MMIO_ACQUIRED;
 597
 598         /* Get the chipset info. */
 599         dinfo->pci_chipset = pdev->device;
 600
 601         if (intelfbhw_get_chipset(pdev, dinfo)) {
 602                 cleanup(dinfo);
 603                 return -ENODEV;
 604         }
 605
 606         if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
 607                 cleanup(dinfo);
 608                 return -ENODEV;
 609         }
 610
 611         INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
 612                 "stolen memory %dkB\n",
 613                 pdev->bus->number, PCI_SLOT(pdev->devfn),
 614                 PCI_FUNC(pdev->devfn), dinfo->name,
 615                 BtoMB(aperture_size), BtoKB(stolen_size));
 616
 617         /* Set these from the options. */
 618         dinfo->accel    = accel;
 619         dinfo->hwcursor = hwcursor;
 620
 621         if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
 622                 INF_MSG("Acceleration is not supported for the %s chipset.\n",
 623                         dinfo->name);
 624                 dinfo->accel = 0;
 625         }
 626
 627         /* Framebuffer parameters - Use all the stolen memory if >= vram */
 628         if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
 629                 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
 630                 dinfo->fbmem_gart = 0;
 631         } else {
 632                 dinfo->fb.size =  MB(vram);
 633                 dinfo->fbmem_gart = 1;
 634         }
 635
 636         /* Allocate space for the ring buffer and HW cursor if enabled. */
 637         if (dinfo->accel) {
 638                 dinfo->ring.size = RINGBUFFER_SIZE;
 639                 dinfo->ring_tail_mask = dinfo->ring.size - 1;
 640         }
 641         if (dinfo->hwcursor) {
 642                 dinfo->cursor.size = HW_CURSOR_SIZE;
 643         }
 644
 645         /* Use agpgart to manage the GATT */
 646         if (!(bridge = agp_backend_acquire(pdev))) {
 647                 ERR_MSG("cannot acquire agp\n");
 648                 cleanup(dinfo);
 649                 return -ENODEV;
 650         }
 651
 652         /* get the current gatt info */
 653         if (agp_copy_info(bridge, &gtt_info)) {
 654                 ERR_MSG("cannot get agp info\n");
 655                 agp_backend_release(bridge);
 656                 cleanup(dinfo);
 657                 return -ENODEV;
 658         }
 659
 660         if (MB(voffset) < stolen_size)
 661                 offset = (stolen_size >> 12);
 662         else
 663                 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
 664
 665         /* set the mem offsets - set them after the already used pages */
 666         if (dinfo->accel) {
 667                 dinfo->ring.offset = offset + gtt_info.current_memory;
 668         }
 669         if (dinfo->hwcursor) {
 670                 dinfo->cursor.offset = offset +
 671                         + gtt_info.current_memory + (dinfo->ring.size >> 12);
 672         }
 673         if (dinfo->fbmem_gart) {
 674                 dinfo->fb.offset = offset +
 675                         + gtt_info.current_memory + (dinfo->ring.size >> 12)
 676                         + (dinfo->cursor.size >> 12);
 677         }
 678
 679         /* Allocate memories (which aren't stolen) */
 680         /* Map the fb and MMIO regions */
 681         /* ioremap only up to the end of used aperture */
 682         dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
 683                 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
 684                  + dinfo->fb.size);
 685         if (!dinfo->aperture.virtual) {
 686                 ERR_MSG("Cannot remap FB region.\n");
 687                 cleanup(dinfo);
 688                 return -ENODEV;
 689         }
 690
 691         dinfo->mmio_base =
 692                 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
 693                                                INTEL_REG_SIZE);
 694         if (!dinfo->mmio_base) {
 695                 ERR_MSG("Cannot remap MMIO region.\n");
 696                 cleanup(dinfo);
 697                 return -ENODEV;
 698         }
 699
 700         if (dinfo->accel) {
 701                 if (!(dinfo->gtt_ring_mem =
 702                       agp_allocate_memory(bridge, dinfo->ring.size >> 12,
 703                                           AGP_NORMAL_MEMORY))) {
 704                         ERR_MSG("cannot allocate ring buffer memory\n");
 705                         agp_backend_release(bridge);
 706                         cleanup(dinfo);
 707                         return -ENOMEM;
 708                 }
 709                 if (agp_bind_memory(dinfo->gtt_ring_mem,
 710                                     dinfo->ring.offset)) {
 711                         ERR_MSG("cannot bind ring buffer memory\n");
 712                         agp_backend_release(bridge);
 713                         cleanup(dinfo);
 714                         return -EBUSY;
 715                 }
 716                 dinfo->ring.physical = dinfo->aperture.physical
 717                         + (dinfo->ring.offset << 12);
 718                 dinfo->ring.virtual  = dinfo->aperture.virtual
 719                         + (dinfo->ring.offset << 12);
 720                 dinfo->ring_head = 0;
 721         }
 722         if (dinfo->hwcursor) {
 723                 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
 724                         : AGP_NORMAL_MEMORY;
 725                 if (!(dinfo->gtt_cursor_mem =
 726                       agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
 727                                           agp_memtype))) {
 728                         ERR_MSG("cannot allocate cursor memory\n");
 729                         agp_backend_release(bridge);
 730                         cleanup(dinfo);
 731                         return -ENOMEM;
 732                 }
 733                 if (agp_bind_memory(dinfo->gtt_cursor_mem,
 734                                     dinfo->cursor.offset)) {
 735                         ERR_MSG("cannot bind cursor memory\n");
 736                         agp_backend_release(bridge);
 737                         cleanup(dinfo);
 738                         return -EBUSY;
 739                 }
 740                 if (dinfo->mobile)
 741                         dinfo->cursor.physical
 742                                 = dinfo->gtt_cursor_mem->physical;
 743                 else
 744                         dinfo->cursor.physical = dinfo->aperture.physical
 745                                 + (dinfo->cursor.offset << 12);
 746                 dinfo->cursor.virtual = dinfo->aperture.virtual
 747                         + (dinfo->cursor.offset << 12);
 748         }
 749         if (dinfo->fbmem_gart) {
 750                 if (!(dinfo->gtt_fb_mem =
 751                       agp_allocate_memory(bridge, dinfo->fb.size >> 12,
 752                                           AGP_NORMAL_MEMORY))) {
 753                         WRN_MSG("cannot allocate framebuffer memory - use "
 754                                 "the stolen one\n");
 755                         dinfo->fbmem_gart = 0;
 756                 }
 757                 if (agp_bind_memory(dinfo->gtt_fb_mem,
 758                                     dinfo->fb.offset)) {
 759                         WRN_MSG("cannot bind framebuffer memory - use "
 760                                 "the stolen one\n");
 761                         dinfo->fbmem_gart = 0;
 762                 }
 763         }
 764
 765         /* update framebuffer memory parameters */
 766         if (!dinfo->fbmem_gart)
 767                 dinfo->fb.offset = 0;   /* starts at offset 0 */
 768         dinfo->fb.physical = dinfo->aperture.physical
 769                 + (dinfo->fb.offset << 12);
 770         dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
 771         dinfo->fb_start = dinfo->fb.offset << 12;
 772
 773         /* release agpgart */
 774         agp_backend_release(bridge);
 775
 776         if (mtrr)
 777                 set_mtrr(dinfo);
 778
 779         DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
 780                 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
 781                 dinfo->fb.virtual);
 782         DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
 783                 dinfo->mmio_base_phys, INTEL_REG_SIZE,
 784                 dinfo->mmio_base);
 785         DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
 786                 dinfo->ring.physical, dinfo->ring.size,
 787                 dinfo->ring.virtual);
 788         DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
 789                 dinfo->cursor.physical, dinfo->cursor.size,
 790                 dinfo->cursor.virtual, dinfo->cursor.offset,
 791                 dinfo->cursor.physical);
 792
 793         DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
 794                 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
 795         DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
 796
 797         if (probeonly)
 798                 bailout(dinfo);
 799
 800         /*
 801          * Check if the LVDS port or any DVO ports are enabled.  If so,
 802          * don't allow mode switching
 803          */
 804         dvo = intelfbhw_check_non_crt(dinfo);
 805         if (dvo) {
 806                 dinfo->fixed_mode = 1;
 807                 WRN_MSG("Non-CRT device is enabled ( ");
 808                 i = 0;
 809                 while (dvo) {
 810                         if (dvo & 1) {
 811                                 s = intelfbhw_dvo_to_string(1 << i);
 812                                 if (s)
 813                                         printk("%s ", s);
 814                         }
 815                         dvo >>= 1;
 816                         ++i;
 817                 }
 818                 printk(").  Disabling mode switching.\n");
 819         }
 820
 821         if (bailearly == 1)
 822                 bailout(dinfo);
 823
 824         if (FIXED_MODE(dinfo) && ORIG_VIDEO_ISVGA != VIDEO_TYPE_VLFB) {
 825                 ERR_MSG("Video mode must be programmed at boot time.\n");
 826                 cleanup(dinfo);
 827                 return -ENODEV;
 828         }
 829
 830         if (bailearly == 2)
 831                 bailout(dinfo);
 832
 833         /* Initialise dinfo and related data. */
 834         /* If an initial mode was programmed at boot time, get its details. */
 835         if (ORIG_VIDEO_ISVGA == VIDEO_TYPE_VLFB)
 836                 get_initial_mode(dinfo);
 837
 838         if (bailearly == 3)
 839                 bailout(dinfo);
 840
 841         if (FIXED_MODE(dinfo)) {
 842                 /* remap fb address */
 843                 update_dinfo(dinfo, &dinfo->initial_var);
 844         }
 845
 846         if (bailearly == 4)
 847                 bailout(dinfo);
 848
 849
 850         if (intelfb_set_fbinfo(dinfo)) {
 851                 cleanup(dinfo);
 852                 return -ENODEV;
 853         }
 854
 855         if (bailearly == 5)
 856                 bailout(dinfo);
 857
 858 #ifdef CONFIG_FB_INTEL_I2C
 859         /* register I2C bus */
 860         intelfb_create_i2c_busses(dinfo);
 861 #endif
 862
 863         if (bailearly == 6)
 864                 bailout(dinfo);
 865
 866         pci_set_drvdata(pdev, dinfo);
 867
 868         /* Save the initial register state. */
 869         i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
 870                                     bailearly > 6 ? bailearly - 6 : 0);
 871         if (i != 0) {
 872                 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
 873                 bailout(dinfo);
 874         }
 875
 876         intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
 877
 878         if (bailearly == 18)
 879                 bailout(dinfo);
 880
 881         /* Cursor initialisation */
 882         if (dinfo->hwcursor) {
 883                 intelfbhw_cursor_init(dinfo);
 884                 intelfbhw_cursor_reset(dinfo);
 885         }
 886
 887         if (bailearly == 19)
 888                 bailout(dinfo);
 889
 890         /* 2d acceleration init */
 891         if (dinfo->accel)
 892                 intelfbhw_2d_start(dinfo);
 893
 894         if (bailearly == 20)
 895                 bailout(dinfo);
 896
 897         if (noregister)
 898                 bailout(dinfo);
 899
 900         if (register_framebuffer(dinfo->info) < 0) {
 901                 ERR_MSG("Cannot register framebuffer.\n");
 902                 cleanup(dinfo);
 903                 return -ENODEV;
 904         }
 905
 906         dinfo->registered = 1;
 907         dinfo->open = 0;
 908
 909         init_waitqueue_head(&dinfo->vsync.wait);
 910         spin_lock_init(&dinfo->int_lock);
 911         dinfo->irq_flags = 0;
 912         dinfo->vsync.pan_display = 0;
 913         dinfo->vsync.pan_offset = 0;
 914
 915         return 0;
 916
 917 err_out_pixmap:
 918         fb_dealloc_cmap(&info->cmap);
 919 err_out_cmap:
 920         framebuffer_release(info);
 921         return -ENODEV;
 922 }
 923
 924 static void __devexit
 925 intelfb_pci_unregister(struct pci_dev *pdev)
 926 {
 927         struct intelfb_info *dinfo = pci_get_drvdata(pdev);
 928
 929         DBG_MSG("intelfb_pci_unregister\n");
 930
 931         if (!dinfo)
 932                 return;
 933
 934         cleanup(dinfo);
 935
 936         pci_set_drvdata(pdev, NULL);
 937 }
 938
 939 /***************************************************************
 940  *                       helper functions                      *
 941  ***************************************************************/
 942
 943 int __inline__
 944 intelfb_var_to_depth(const struct fb_var_screeninfo *var)
 945 {
 946         DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
 947                 var->bits_per_pixel, var->green.length);
 948
 949         switch (var->bits_per_pixel) {
 950         case 16:
 951                 return (var->green.length == 6) ? 16 : 15;
 952         case 32:
 953                 return 24;
 954         default:
 955                 return var->bits_per_pixel;
 956         }
 957 }
 958
 959
 960 static __inline__ int
 961 var_to_refresh(const struct fb_var_screeninfo *var)
 962 {
 963         int xtot = var->xres + var->left_margin + var->right_margin +
 964                    var->hsync_len;
 965         int ytot = var->yres + var->upper_margin + var->lower_margin +
 966                    var->vsync_len;
 967
 968         return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
 969 }
 970
 971 /***************************************************************
 972  *                Various intialisation functions              *
 973  ***************************************************************/
 974
 975 static void __devinit
 976 get_initial_mode(struct intelfb_info *dinfo)
 977 {
 978         struct fb_var_screeninfo *var;
 979         int xtot, ytot;
 980
 981         DBG_MSG("get_initial_mode\n");
 982
 983         dinfo->initial_vga = 1;
 984         dinfo->initial_fb_base = screen_info.lfb_base;
 985         dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
 986         dinfo->initial_pitch = screen_info.lfb_linelength;
 987
 988         var = &dinfo->initial_var;
 989         memset(var, 0, sizeof(*var));
 990         var->xres = screen_info.lfb_width;
 991         var->yres = screen_info.lfb_height;
 992         var->bits_per_pixel = screen_info.lfb_depth;
 993         switch (screen_info.lfb_depth) {
 994         case 15:
 995                 var->bits_per_pixel = 16;
 996                 break;
 997         case 24:
 998                 var->bits_per_pixel = 32;
 999                 break;
1000         }
1001
1002         DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
1003                 dinfo->initial_fb_base, dinfo->initial_video_ram,
1004                 BtoKB(dinfo->initial_video_ram));
1005
1006         DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
1007                 var->xres, var->yres, var->bits_per_pixel,
1008                 dinfo->initial_pitch);
1009
1010         /* Dummy timing values (assume 60Hz) */
1011         var->left_margin = (var->xres / 8) & 0xf8;
1012         var->right_margin = 32;
1013         var->upper_margin = 16;
1014         var->lower_margin = 4;
1015         var->hsync_len = (var->xres / 8) & 0xf8;
1016         var->vsync_len = 4;
1017
1018         xtot = var->xres + var->left_margin +
1019                 var->right_margin + var->hsync_len;
1020         ytot = var->yres + var->upper_margin +
1021                 var->lower_margin + var->vsync_len;
1022         var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1023
1024         var->height = -1;
1025         var->width = -1;
1026
1027         if (var->bits_per_pixel > 8) {
1028                 var->red.offset = screen_info.red_pos;
1029                 var->red.length = screen_info.red_size;
1030                 var->green.offset = screen_info.green_pos;
1031                 var->green.length = screen_info.green_size;
1032                 var->blue.offset = screen_info.blue_pos;
1033                 var->blue.length = screen_info.blue_size;
1034                 var->transp.offset = screen_info.rsvd_pos;
1035                 var->transp.length = screen_info.rsvd_size;
1036         } else {
1037                 var->red.length = 8;
1038                 var->green.length = 8;
1039                 var->blue.length = 8;
1040         }
1041 }
1042
1043 static int __devinit
1044 intelfb_init_var(struct intelfb_info *dinfo)
1045 {
1046         struct fb_var_screeninfo *var;
1047         int msrc = 0;
1048
1049         DBG_MSG("intelfb_init_var\n");
1050
1051         var = &dinfo->info->var;
1052         if (FIXED_MODE(dinfo)) {
1053                 memcpy(var, &dinfo->initial_var,
1054                        sizeof(struct fb_var_screeninfo));
1055                 msrc = 5;
1056         } else {
1057                 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1058                 u8 *edid_d = NULL;
1059
1060                 if (edid_s) {
1061                         edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1062
1063                         if (edid_d) {
1064                                 fb_edid_to_monspecs(edid_d,
1065                                                     &dinfo->info->monspecs);
1066                                 kfree(edid_d);
1067                         }
1068                 }
1069
1070                 if (mode) {
1071                         printk("intelfb: Looking for mode in private "
1072                                "database\n");
1073                         msrc = fb_find_mode(var, dinfo->info, mode,
1074                                             dinfo->info->monspecs.modedb,
1075                                             dinfo->info->monspecs.modedb_len,
1076                                             NULL, 0);
1077
1078                         if (msrc && msrc > 1) {
1079                                 printk("intelfb: No mode in private database, "
1080                                        "intelfb: looking for mode in global "
1081                                        "database ");
1082                                 msrc = fb_find_mode(var, dinfo->info, mode,
1083                                                     NULL, 0, NULL, 0);
1084
1085                                 if (msrc)
1086                                         msrc |= 8;
1087                         }
1088
1089                 }
1090
1091                 if (!msrc) {
1092                         msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1093                                             NULL, 0, NULL, 0);
1094                 }
1095         }
1096
1097         if (!msrc) {
1098                 ERR_MSG("Cannot find a suitable video mode.\n");
1099                 return 1;
1100         }
1101
1102         INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1103                 var->bits_per_pixel, var_to_refresh(var));
1104
1105         DBG_MSG("Initial video mode is from %d.\n", msrc);
1106
1107 #if ALLOCATE_FOR_PANNING
1108         /* Allow use of half of the video ram for panning */
1109         var->xres_virtual = var->xres;
1110         var->yres_virtual =
1111                 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1112         if (var->yres_virtual < var->yres)
1113                 var->yres_virtual = var->yres;
1114 #else
1115         var->yres_virtual = var->yres;
1116 #endif
1117
1118         if (dinfo->accel)
1119                 var->accel_flags |= FB_ACCELF_TEXT;
1120         else
1121                 var->accel_flags &= ~FB_ACCELF_TEXT;
1122
1123         return 0;
1124 }
1125
1126 static int __devinit
1127 intelfb_set_fbinfo(struct intelfb_info *dinfo)
1128 {
1129         struct fb_info *info = dinfo->info;
1130
1131         DBG_MSG("intelfb_set_fbinfo\n");
1132
1133         info->flags = FBINFO_FLAG_DEFAULT;
1134         info->fbops = &intel_fb_ops;
1135         info->pseudo_palette = dinfo->pseudo_palette;
1136
1137         info->pixmap.size = 64*1024;
1138         info->pixmap.buf_align = 8;
1139         info->pixmap.access_align = 32;
1140         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1141
1142         if (intelfb_init_var(dinfo))
1143                 return 1;
1144
1145         info->pixmap.scan_align = 1;
1146         strcpy(info->fix.id, dinfo->name);
1147         info->fix.smem_start = dinfo->fb.physical;
1148         info->fix.smem_len = dinfo->fb.size;
1149         info->fix.type = FB_TYPE_PACKED_PIXELS;
1150         info->fix.type_aux = 0;
1151         info->fix.xpanstep = 8;
1152         info->fix.ypanstep = 1;
1153         info->fix.ywrapstep = 0;
1154         info->fix.mmio_start = dinfo->mmio_base_phys;
1155         info->fix.mmio_len = INTEL_REG_SIZE;
1156         info->fix.accel = FB_ACCEL_I830;
1157         update_dinfo(dinfo, &info->var);
1158
1159         return 0;
1160 }
1161
1162 /* Update dinfo to match the active video mode. */
1163 static void
1164 update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var)
1165 {
1166         DBG_MSG("update_dinfo\n");
1167
1168         dinfo->bpp = var->bits_per_pixel;
1169         dinfo->depth = intelfb_var_to_depth(var);
1170         dinfo->xres = var->xres;
1171         dinfo->yres = var->xres;
1172         dinfo->pixclock = var->pixclock;
1173
1174         dinfo->info->fix.visual = dinfo->visual;
1175         dinfo->info->fix.line_length = dinfo->pitch;
1176
1177         switch (dinfo->bpp) {
1178         case 8:
1179                 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1180                 dinfo->pitch = var->xres_virtual;
1181                 break;
1182         case 16:
1183                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1184                 dinfo->pitch = var->xres_virtual * 2;
1185                 break;
1186         case 32:
1187                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1188                 dinfo->pitch = var->xres_virtual * 4;
1189                 break;
1190         }
1191
1192         /* Make sure the line length is a aligned correctly. */
1193         if (IS_I9XX(dinfo))
1194                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1195         else
1196                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1197
1198         if (FIXED_MODE(dinfo))
1199                 dinfo->pitch = dinfo->initial_pitch;
1200
1201         dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1202         dinfo->info->fix.line_length = dinfo->pitch;
1203         dinfo->info->fix.visual = dinfo->visual;
1204 }
1205
1206 /* fbops functions */
1207
1208 /***************************************************************
1209  *                       fbdev interface                       *
1210  ***************************************************************/
1211
1212 static int
1213 intelfb_open(struct fb_info *info, int user)
1214 {
1215         struct intelfb_info *dinfo = GET_DINFO(info);
1216
1217         if (user) {
1218                 dinfo->open++;
1219         }
1220
1221         return 0;
1222 }
1223
1224 static int
1225 intelfb_release(struct fb_info *info, int user)
1226 {
1227         struct intelfb_info *dinfo = GET_DINFO(info);
1228
1229         if (user) {
1230                 dinfo->open--;
1231                 msleep(1);
1232                 if (!dinfo->open) {
1233                         intelfbhw_disable_irq(dinfo);
1234                 }
1235         }
1236
1237         return 0;
1238 }
1239
1240 static int
1241 intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1242 {
1243         int change_var = 0;
1244         struct fb_var_screeninfo v;
1245         struct intelfb_info *dinfo;
1246         static int first = 1;
1247         int i;
1248         /* Good pitches to allow tiling.  Don't care about pitches < 1024. */
1249         static const int pitches[] = {
1250                 128 * 8,
1251                 128 * 16,
1252                 128 * 32,
1253                 128 * 64,
1254                 0
1255         };
1256
1257         DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1258
1259         dinfo = GET_DINFO(info);
1260
1261         /* update the pitch */
1262         if (intelfbhw_validate_mode(dinfo, var) != 0)
1263                 return -EINVAL;
1264
1265         v = *var;
1266
1267         for (i = 0; pitches[i] != 0; i++) {
1268                 if (pitches[i] >= v.xres_virtual) {
1269                         v.xres_virtual = pitches[i];
1270                         break;
1271                 }
1272         }
1273
1274         /* Check for a supported bpp. */
1275         if (v.bits_per_pixel <= 8) {
1276                 v.bits_per_pixel = 8;
1277         } else if (v.bits_per_pixel <= 16) {
1278                 if (v.bits_per_pixel == 16)
1279                         v.green.length = 6;
1280                 v.bits_per_pixel = 16;
1281         } else if (v.bits_per_pixel <= 32) {
1282                 v.bits_per_pixel = 32;
1283         } else
1284                 return -EINVAL;
1285
1286         change_var = ((info->var.xres != var->xres) ||
1287                       (info->var.yres != var->yres) ||
1288                       (info->var.xres_virtual != var->xres_virtual) ||
1289                       (info->var.yres_virtual != var->yres_virtual) ||
1290                       (info->var.bits_per_pixel != var->bits_per_pixel) ||
1291                       memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1292                       memcmp(&info->var.green, &var->green,
1293                              sizeof(var->green)) ||
1294                       memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1295
1296         if (FIXED_MODE(dinfo) &&
1297             (change_var ||
1298              var->yres_virtual > dinfo->initial_var.yres_virtual ||
1299              var->yres_virtual < dinfo->initial_var.yres ||
1300              var->xoffset || var->nonstd)) {
1301                 if (first) {
1302                         ERR_MSG("Changing the video mode is not supported.\n");
1303                         first = 0;
1304                 }
1305                 return -EINVAL;
1306         }
1307
1308         switch (intelfb_var_to_depth(&v)) {
1309         case 8:
1310                 v.red.offset = v.green.offset = v.blue.offset = 0;
1311                 v.red.length = v.green.length = v.blue.length = 8;
1312                 v.transp.offset = v.transp.length = 0;
1313                 break;
1314         case 15:
1315                 v.red.offset = 10;
1316                 v.green.offset = 5;
1317                 v.blue.offset = 0;
1318                 v.red.length = v.green.length = v.blue.length = 5;
1319                 v.transp.offset = v.transp.length = 0;
1320                 break;
1321         case 16:
1322                 v.red.offset = 11;
1323                 v.green.offset = 5;
1324                 v.blue.offset = 0;
1325                 v.red.length = 5;
1326                 v.green.length = 6;
1327                 v.blue.length = 5;
1328                 v.transp.offset = v.transp.length = 0;
1329                 break;
1330         case 24:
1331                 v.red.offset = 16;
1332                 v.green.offset = 8;
1333                 v.blue.offset = 0;
1334                 v.red.length = v.green.length = v.blue.length = 8;
1335                 v.transp.offset = v.transp.length = 0;
1336                 break;
1337         case 32:
1338                 v.red.offset = 16;
1339                 v.green.offset = 8;
1340                 v.blue.offset = 0;
1341                 v.red.length = v.green.length = v.blue.length = 8;
1342                 v.transp.offset = 24;
1343                 v.transp.length = 8;
1344                 break;
1345         }
1346
1347         if (v.xoffset < 0)
1348                 v.xoffset = 0;
1349         if (v.yoffset < 0)
1350                 v.yoffset = 0;
1351
1352         if (v.xoffset > v.xres_virtual - v.xres)
1353                 v.xoffset = v.xres_virtual - v.xres;
1354         if (v.yoffset > v.yres_virtual - v.yres)
1355                 v.yoffset = v.yres_virtual - v.yres;
1356
1357         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1358                           v.transp.msb_right = 0;
1359
1360         *var = v;
1361
1362         return 0;
1363 }
1364
1365 static int
1366 intelfb_set_par(struct fb_info *info)
1367 {
1368         struct intelfb_hwstate *hw;
1369         struct intelfb_info *dinfo = GET_DINFO(info);
1370
1371         if (FIXED_MODE(dinfo)) {
1372                 ERR_MSG("Changing the video mode is not supported.\n");
1373                 return -EINVAL;
1374         }
1375
1376         hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1377         if (!hw)
1378                 return -ENOMEM;
1379
1380         DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1381                 info->var.yres, info->var.bits_per_pixel);
1382
1383         intelfb_blank(FB_BLANK_POWERDOWN, info);
1384
1385         if (ACCEL(dinfo, info))
1386                 intelfbhw_2d_stop(dinfo);
1387
1388         memcpy(hw, &dinfo->save_state, sizeof(*hw));
1389         if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1390                 goto invalid_mode;
1391         if (intelfbhw_program_mode(dinfo, hw, 0))
1392                 goto invalid_mode;
1393
1394 #if REGDUMP > 0
1395         intelfbhw_read_hw_state(dinfo, hw, 0);
1396         intelfbhw_print_hw_state(dinfo, hw);
1397 #endif
1398
1399         update_dinfo(dinfo, &info->var);
1400
1401         if (ACCEL(dinfo, info))
1402                 intelfbhw_2d_start(dinfo);
1403
1404         intelfb_pan_display(&info->var, info);
1405
1406         intelfb_blank(FB_BLANK_UNBLANK, info);
1407
1408         if (ACCEL(dinfo, info)) {
1409                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1410                 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1411                 FBINFO_HWACCEL_IMAGEBLIT;
1412         } else {
1413                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1414         }
1415         kfree(hw);
1416         return 0;
1417 invalid_mode:
1418         kfree(hw);
1419         return -EINVAL;
1420 }
1421
1422 static int
1423 intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1424                   unsigned blue, unsigned transp, struct fb_info *info)
1425 {
1426         struct intelfb_info *dinfo = GET_DINFO(info);
1427
1428 #if VERBOSE > 0
1429         DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1430 #endif
1431
1432         if (regno > 255)
1433                 return 1;
1434
1435         if (dinfo->depth == 8) {
1436                 red >>= 8;
1437                 green >>= 8;
1438                 blue >>= 8;
1439
1440                 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1441                                     transp);
1442         }
1443
1444         if (regno < 16) {
1445                 switch (dinfo->depth) {
1446                 case 15:
1447                         dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1448                                 ((green & 0xf800) >>  6) |
1449                                 ((blue & 0xf800) >> 11);
1450                         break;
1451                 case 16:
1452                         dinfo->pseudo_palette[regno] = (red & 0xf800) |
1453                                 ((green & 0xfc00) >>  5) |
1454                                 ((blue  & 0xf800) >> 11);
1455                         break;
1456                 case 24:
1457                         dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1458                                 (green & 0xff00) |
1459                                 ((blue  & 0xff00) >> 8);
1460                         break;
1461                 }
1462         }
1463
1464         return 0;
1465 }
1466
1467 static int
1468 intelfb_blank(int blank, struct fb_info *info)
1469 {
1470         intelfbhw_do_blank(blank, info);
1471         return 0;
1472 }
1473
1474 static int
1475 intelfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1476 {
1477         intelfbhw_pan_display(var, info);
1478         return 0;
1479 }
1480
1481 /* When/if we have our own ioctls. */
1482 static int
1483 intelfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
1484 {
1485         int retval = 0;
1486         struct intelfb_info *dinfo = GET_DINFO(info);
1487         u32 pipe = 0;
1488
1489         switch (cmd) {
1490                 case FBIO_WAITFORVSYNC:
1491                         if (get_user(pipe, (__u32 __user *)arg))
1492                                 return -EFAULT;
1493
1494                         retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1495                         break;
1496                 default:
1497                         break;
1498         }
1499
1500         return retval;
1501 }
1502
1503 static void
1504 intelfb_fillrect (struct fb_info *info, const struct fb_fillrect *rect)
1505 {
1506         struct intelfb_info *dinfo = GET_DINFO(info);
1507         u32 rop, color;
1508
1509 #if VERBOSE > 0
1510         DBG_MSG("intelfb_fillrect\n");
1511 #endif
1512
1513         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1514                 return cfb_fillrect(info, rect);
1515
1516         if (rect->rop == ROP_COPY)
1517                 rop = PAT_ROP_GXCOPY;
1518         else // ROP_XOR
1519                 rop = PAT_ROP_GXXOR;
1520
1521         if (dinfo->depth != 8)
1522                 color = dinfo->pseudo_palette[rect->color];
1523         else
1524                 color = rect->color;
1525
1526         intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1527                               rect->width, rect->height, color,
1528                               dinfo->pitch, info->var.bits_per_pixel,
1529                               rop);
1530 }
1531
1532 static void
1533 intelfb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
1534 {
1535         struct intelfb_info *dinfo = GET_DINFO(info);
1536
1537 #if VERBOSE > 0
1538         DBG_MSG("intelfb_copyarea\n");
1539 #endif
1540
1541         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1542                 return cfb_copyarea(info, region);
1543
1544         intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1545                             region->dy, region->width, region->height,
1546                             dinfo->pitch, info->var.bits_per_pixel);
1547 }
1548
1549 static void
1550 intelfb_imageblit(struct fb_info *info, const struct fb_image *image)
1551 {
1552         struct intelfb_info *dinfo = GET_DINFO(info);
1553         u32 fgcolor, bgcolor;
1554
1555 #if VERBOSE > 0
1556         DBG_MSG("intelfb_imageblit\n");
1557 #endif
1558
1559         if (!ACCEL(dinfo, info) || dinfo->depth == 4
1560             || image->depth != 1)
1561                 return cfb_imageblit(info, image);
1562
1563         if (dinfo->depth != 8) {
1564                 fgcolor = dinfo->pseudo_palette[image->fg_color];
1565                 bgcolor = dinfo->pseudo_palette[image->bg_color];
1566         } else {
1567                 fgcolor = image->fg_color;
1568                 bgcolor = image->bg_color;
1569         }
1570
1571         if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1572                                     image->height, image->data,
1573                                     image->dx, image->dy,
1574                                     dinfo->pitch, info->var.bits_per_pixel))
1575                 return cfb_imageblit(info, image);
1576 }
1577
1578 static int
1579 intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1580 {
1581         struct intelfb_info *dinfo = GET_DINFO(info);
1582         u32 physical;
1583 #if VERBOSE > 0
1584         DBG_MSG("intelfb_cursor\n");
1585 #endif
1586
1587         if (!dinfo->hwcursor)
1588                 return -ENODEV;
1589
1590         intelfbhw_cursor_hide(dinfo);
1591
1592         /* If XFree killed the cursor - restore it */
1593         physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1594                    (dinfo->cursor.offset << 12);
1595
1596         if (INREG(CURSOR_A_BASEADDR) != physical) {
1597                 u32 fg, bg;
1598
1599                 DBG_MSG("the cursor was killed - restore it !!\n");
1600                 DBG_MSG("size %d, %d   pos %d, %d\n",
1601                         cursor->image.width, cursor->image.height,
1602                         cursor->image.dx, cursor->image.dy);
1603
1604                 intelfbhw_cursor_init(dinfo);
1605                 intelfbhw_cursor_reset(dinfo);
1606                 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1607                                         cursor->image.dy);
1608
1609                 if (dinfo->depth != 8) {
1610                         fg =dinfo->pseudo_palette[cursor->image.fg_color];
1611                         bg =dinfo->pseudo_palette[cursor->image.bg_color];
1612                 } else {
1613                         fg = cursor->image.fg_color;
1614                         bg = cursor->image.bg_color;
1615                 }
1616                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1617                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1618                                       cursor->image.height,
1619                                       dinfo->cursor_src);
1620
1621                 if (cursor->enable)
1622                         intelfbhw_cursor_show(dinfo);
1623                 return 0;
1624         }
1625
1626         if (cursor->set & FB_CUR_SETPOS) {
1627                 u32 dx, dy;
1628
1629                 dx = cursor->image.dx - info->var.xoffset;
1630                 dy = cursor->image.dy - info->var.yoffset;
1631
1632                 intelfbhw_cursor_setpos(dinfo, dx, dy);
1633         }
1634
1635         if (cursor->set & FB_CUR_SETSIZE) {
1636                 if (cursor->image.width > 64 || cursor->image.height > 64)
1637                         return -ENXIO;
1638
1639                 intelfbhw_cursor_reset(dinfo);
1640         }
1641
1642         if (cursor->set & FB_CUR_SETCMAP) {
1643                 u32 fg, bg;
1644
1645                 if (dinfo->depth != 8) {
1646                         fg = dinfo->pseudo_palette[cursor->image.fg_color];
1647                         bg = dinfo->pseudo_palette[cursor->image.bg_color];
1648                 } else {
1649                         fg = cursor->image.fg_color;
1650                         bg = cursor->image.bg_color;
1651                 }
1652
1653                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1654         }
1655
1656         if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1657                 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1658                 u32 size = s_pitch * cursor->image.height;
1659                 u8 *dat = (u8 *) cursor->image.data;
1660                 u8 *msk = (u8 *) cursor->mask;
1661                 u8 src[64];
1662                 u32 i;
1663
1664                 if (cursor->image.depth != 1)
1665                         return -ENXIO;
1666
1667                 switch (cursor->rop) {
1668                 case ROP_XOR:
1669                         for (i = 0; i < size; i++)
1670                                 src[i] = dat[i] ^ msk[i];
1671                         break;
1672                 case ROP_COPY:
1673                 default:
1674                         for (i = 0; i < size; i++)
1675                                 src[i] = dat[i] & msk[i];
1676                         break;
1677                 }
1678
1679                 /* save the bitmap to restore it when XFree will
1680                    make the cursor dirty */
1681                 memcpy(dinfo->cursor_src, src, size);
1682
1683                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1684                                       cursor->image.height, src);
1685         }
1686
1687         if (cursor->enable)
1688                 intelfbhw_cursor_show(dinfo);
1689
1690         return 0;
1691 }
1692
1693 static int
1694 intelfb_sync(struct fb_info *info)
1695 {
1696         struct intelfb_info *dinfo = GET_DINFO(info);
1697
1698 #if VERBOSE > 0
1699         DBG_MSG("intelfb_sync\n");
1700 #endif
1701
1702         if (dinfo->ring_lockup)
1703                 return 0;
1704
1705         intelfbhw_do_sync(dinfo);
1706         return 0;
1707 }
1708