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/config.h>
 112 #include <linux/module.h>
 113 #include <linux/kernel.h>
 114 #include <linux/errno.h>
 115 #include <linux/string.h>
 116 #include <linux/mm.h>
 117 #include <linux/tty.h>
 118 #include <linux/slab.h>
 119 #include <linux/delay.h>
 120 #include <linux/fb.h>
 121 #include <linux/ioport.h>
 122 #include <linux/init.h>
 123 #include <linux/pci.h>
 124 #include <linux/vmalloc.h>
 125 #include <linux/pagemap.h>
 126
 127 #include <asm/io.h>
 128
 129 #ifdef CONFIG_MTRR
 130 #include <asm/mtrr.h>
 131 #endif
 132
 133 #include "intelfb.h"
 134 #include "intelfbhw.h"
 135 #include "../edid.h"
 136
 137 static void __devinit get_initial_mode(struct intelfb_info *dinfo);
 138 static void update_dinfo(struct intelfb_info *dinfo,
 139                          struct fb_var_screeninfo *var);
 140 static int intelfb_open(struct fb_info *info, int user);
 141 static int intelfb_release(struct fb_info *info, int user);
 142 static int intelfb_check_var(struct fb_var_screeninfo *var,
 143                              struct fb_info *info);
 144 static int intelfb_set_par(struct fb_info *info);
 145 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 146                              unsigned blue, unsigned transp,
 147                              struct fb_info *info);
 148
 149 static int intelfb_blank(int blank, struct fb_info *info);
 150 static int intelfb_pan_display(struct fb_var_screeninfo *var,
 151                                struct fb_info *info);
 152
 153 static void intelfb_fillrect(struct fb_info *info,
 154                              const struct fb_fillrect *rect);
 155 static void intelfb_copyarea(struct fb_info *info,
 156                              const struct fb_copyarea *region);
 157 static void intelfb_imageblit(struct fb_info *info,
 158                               const struct fb_image *image);
 159 static int intelfb_cursor(struct fb_info *info,
 160                            struct fb_cursor *cursor);
 161
 162 static int intelfb_sync(struct fb_info *info);
 163
 164 static int intelfb_ioctl(struct fb_info *info,
 165                          unsigned int cmd, unsigned long arg);
 166
 167 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
 168                                           const struct pci_device_id *ent);
 169 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
 170 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
 171
 172 /*
 173  * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
 174  * mobile chipsets from being registered.
 175  */
 176 #if DETECT_VGA_CLASS_ONLY
 177 #define INTELFB_CLASS_MASK ~0 << 8
 178 #else
 179 #define INTELFB_CLASS_MASK 0
 180 #endif
 181
 182 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
 183         { 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 },
 184         { 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 },
 185         { 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 },
 186         { 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 },
 187         { 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 },
 188         { 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 },
 189         { 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 },
 190         { 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 },
 191         { 0, }
 192 };
 193
 194 /* Global data */
 195 static int num_registered = 0;
 196
 197 /* fb ops */
 198 static struct fb_ops intel_fb_ops = {
 199         .owner =                THIS_MODULE,
 200         .fb_open =              intelfb_open,
 201         .fb_release =           intelfb_release,
 202         .fb_check_var =         intelfb_check_var,
 203         .fb_set_par =           intelfb_set_par,
 204         .fb_setcolreg =         intelfb_setcolreg,
 205         .fb_blank =             intelfb_blank,
 206         .fb_pan_display =       intelfb_pan_display,
 207         .fb_fillrect  =         intelfb_fillrect,
 208         .fb_copyarea  =         intelfb_copyarea,
 209         .fb_imageblit =         intelfb_imageblit,
 210         .fb_cursor =            intelfb_cursor,
 211         .fb_sync =              intelfb_sync,
 212         .fb_ioctl =             intelfb_ioctl
 213 };
 214
 215 /* PCI driver module table */
 216 static struct pci_driver intelfb_driver = {
 217         .name =         "intelfb",
 218         .id_table =     intelfb_pci_table,
 219         .probe =        intelfb_pci_register,
 220         .remove =       __devexit_p(intelfb_pci_unregister)
 221 };
 222
 223 /* Module description/parameters */
 224 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
 225               "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
 226 MODULE_DESCRIPTION(
 227         "Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS " chipsets");
 228 MODULE_LICENSE("Dual BSD/GPL");
 229 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
 230
 231 static int accel        = 1;
 232 static int vram         = 4;
 233 static int hwcursor     = 0;
 234 static int mtrr         = 1;
 235 static int fixed        = 0;
 236 static int noinit       = 0;
 237 static int noregister   = 0;
 238 static int probeonly    = 0;
 239 static int idonly       = 0;
 240 static int bailearly    = 0;
 241 static int voffset      = 48;
 242 static char *mode       = NULL;
 243
 244 module_param(accel, bool, S_IRUGO);
 245 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
 246 module_param(vram, int, S_IRUGO);
 247 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
 248 module_param(voffset, int, S_IRUGO);
 249 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
 250 module_param(hwcursor, bool, S_IRUGO);
 251 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
 252 module_param(mtrr, bool, S_IRUGO);
 253 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
 254 module_param(fixed, bool, S_IRUGO);
 255 MODULE_PARM_DESC(fixed, "Disable mode switching");
 256 module_param(noinit, bool, 0);
 257 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
 258 module_param(noregister, bool, 0);
 259 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
 260 module_param(probeonly, bool, 0);
 261 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
 262 module_param(idonly, bool, 0);
 263 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
 264 module_param(bailearly, bool, 0);
 265 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
 266 module_param(mode, charp, S_IRUGO);
 267 MODULE_PARM_DESC(mode,
 268                  "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
 269
 270 #ifndef MODULE
 271 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
 272 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
 273 #define OPT_STRVAL(opt, name) (opt + strlen(name))
 274
 275 static __inline__ char *
 276 get_opt_string(const char *this_opt, const char *name)
 277 {
 278         const char *p;
 279         int i;
 280         char *ret;
 281
 282         p = OPT_STRVAL(this_opt, name);
 283         i = 0;
 284         while (p[i] && p[i] != ' ' && p[i] != ',')
 285                 i++;
 286         ret = kmalloc(i + 1, GFP_KERNEL);
 287         if (ret) {
 288                 strncpy(ret, p, i);
 289                 ret[i] = '\0';
 290         }
 291         return ret;
 292 }
 293
 294 static __inline__ int
 295 get_opt_int(const char *this_opt, const char *name, int *ret)
 296 {
 297         if (!ret)
 298                 return 0;
 299
 300         if (!OPT_EQUAL(this_opt, name))
 301                 return 0;
 302
 303         *ret = OPT_INTVAL(this_opt, name);
 304         return 1;
 305 }
 306
 307 static __inline__ int
 308 get_opt_bool(const char *this_opt, const char *name, int *ret)
 309 {
 310         if (!ret)
 311                 return 0;
 312
 313         if (OPT_EQUAL(this_opt, name)) {
 314                 if (this_opt[strlen(name)] == '=')
 315                         *ret = simple_strtoul(this_opt + strlen(name) + 1,
 316                                               NULL, 0);
 317                 else
 318                         *ret = 1;
 319         } else {
 320                 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
 321                         *ret = 0;
 322                 else
 323                         return 0;
 324         }
 325         return 1;
 326 }
 327
 328 static int __init
 329 intelfb_setup(char *options)
 330 {
 331         char *this_opt;
 332
 333         DBG_MSG("intelfb_setup\n");
 334
 335         if (!options || !*options) {
 336                 DBG_MSG("no options\n");
 337                 return 0;
 338         } else
 339                 DBG_MSG("options: %s\n", options);
 340
 341         /*
 342          * These are the built-in options analogous to the module parameters
 343          * defined above.
 344          *
 345          * The syntax is:
 346          *
 347          *    video=intelfb:[mode][,<param>=<val>] ...
 348          *
 349          * e.g.,
 350          *
 351          *    video=intelfb:1024x768-16@75,accel=0
 352          */
 353
 354         while ((this_opt = strsep(&options, ","))) {
 355                 if (!*this_opt)
 356                         continue;
 357                 if (get_opt_bool(this_opt, "accel", &accel))
 358                         ;
 359                 else if (get_opt_int(this_opt, "vram", &vram))
 360                         ;
 361                 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
 362                         ;
 363                 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
 364                         ;
 365                 else if (get_opt_bool(this_opt, "fixed", &fixed))
 366                         ;
 367                 else if (get_opt_bool(this_opt, "init", &noinit))
 368                         noinit = !noinit;
 369                 else if (OPT_EQUAL(this_opt, "mode="))
 370                         mode = get_opt_string(this_opt, "mode=");
 371                 else
 372                         mode = this_opt;
 373         }
 374
 375         return 0;
 376 }
 377
 378 #endif
 379
 380 static int __init
 381 intelfb_init(void)
 382 {
 383 #ifndef MODULE
 384         char *option = NULL;
 385 #endif
 386
 387         DBG_MSG("intelfb_init\n");
 388
 389         INF_MSG("Framebuffer driver for "
 390                 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
 391         INF_MSG("Version " INTELFB_VERSION "\n");
 392
 393         if (idonly)
 394                 return -ENODEV;
 395
 396 #ifndef MODULE
 397         if (fb_get_options("intelfb", &option))
 398                 return -ENODEV;
 399         intelfb_setup(option);
 400 #endif
 401
 402         return pci_register_driver(&intelfb_driver);
 403 }
 404
 405 static void __exit
 406 intelfb_exit(void)
 407 {
 408         DBG_MSG("intelfb_exit\n");
 409         pci_unregister_driver(&intelfb_driver);
 410 }
 411
 412 module_init(intelfb_init);
 413 module_exit(intelfb_exit);
 414
 415 /***************************************************************
 416  *                     mtrr support functions                  *
 417  ***************************************************************/
 418
 419 #ifdef CONFIG_MTRR
 420 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
 421 {
 422         dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
 423                                    dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
 424         if (dinfo->mtrr_reg < 0) {
 425                 ERR_MSG("unable to set MTRR\n");
 426                 return;
 427         }
 428         dinfo->has_mtrr = 1;
 429 }
 430 static inline void unset_mtrr(struct intelfb_info *dinfo)
 431 {
 432         if (dinfo->has_mtrr)
 433                 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
 434                          dinfo->aperture.size);
 435 }
 436 #else
 437 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
 438
 439 #define unset_mtrr(x) do { } while (0)
 440 #endif /* CONFIG_MTRR */
 441
 442 /***************************************************************
 443  *                        driver init / cleanup                *
 444  ***************************************************************/
 445
 446 static void
 447 cleanup(struct intelfb_info *dinfo)
 448 {
 449         DBG_MSG("cleanup\n");
 450
 451         if (!dinfo)
 452                 return;
 453
 454         intelfbhw_disable_irq(dinfo);
 455
 456         fb_dealloc_cmap(&dinfo->info->cmap);
 457         kfree(dinfo->info->pixmap.addr);
 458
 459         if (dinfo->registered)
 460                 unregister_framebuffer(dinfo->info);
 461
 462         unset_mtrr(dinfo);
 463
 464         if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
 465                 agp_unbind_memory(dinfo->gtt_fb_mem);
 466                 agp_free_memory(dinfo->gtt_fb_mem);
 467         }
 468         if (dinfo->gtt_cursor_mem) {
 469                 agp_unbind_memory(dinfo->gtt_cursor_mem);
 470                 agp_free_memory(dinfo->gtt_cursor_mem);
 471         }
 472         if (dinfo->gtt_ring_mem) {
 473                 agp_unbind_memory(dinfo->gtt_ring_mem);
 474                 agp_free_memory(dinfo->gtt_ring_mem);
 475         }
 476
 477 #ifdef CONFIG_FB_INTEL_I2C
 478         /* un-register I2C bus */
 479         intelfb_delete_i2c_busses(dinfo);
 480 #endif
 481
 482         if (dinfo->mmio_base)
 483                 iounmap((void __iomem *)dinfo->mmio_base);
 484         if (dinfo->aperture.virtual)
 485                 iounmap((void __iomem *)dinfo->aperture.virtual);
 486
 487         if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
 488                 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
 489         if (dinfo->flag & INTELFB_FB_ACQUIRED)
 490                 release_mem_region(dinfo->aperture.physical,
 491                                    dinfo->aperture.size);
 492         framebuffer_release(dinfo->info);
 493 }
 494
 495 #define bailout(dinfo) do {                                             \
 496         DBG_MSG("bailout\n");                                           \
 497         cleanup(dinfo);                                                 \
 498         INF_MSG("Not going to register framebuffer, exiting...\n");     \
 499         return -ENODEV;                                                 \
 500 } while (0)
 501
 502
 503 static int __devinit
 504 intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
 505 {
 506         struct fb_info *info;
 507         struct intelfb_info *dinfo;
 508         int i, err, dvo;
 509         int aperture_size, stolen_size;
 510         struct agp_kern_info gtt_info;
 511         int agp_memtype;
 512         const char *s;
 513         struct agp_bridge_data *bridge;
 514         int aperture_bar = 0;
 515         int mmio_bar = 1;
 516         int offset;
 517
 518         DBG_MSG("intelfb_pci_register\n");
 519
 520         num_registered++;
 521         if (num_registered != 1) {
 522                 ERR_MSG("Attempted to register %d devices "
 523                         "(should be only 1).\n", num_registered);
 524                 return -ENODEV;
 525         }
 526
 527         info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
 528         if (!info) {
 529                 ERR_MSG("Could not allocate memory for intelfb_info.\n");
 530                 return -ENODEV;
 531         }
 532         if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
 533                 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
 534                 goto err_out_cmap;
 535                 return -ENODEV;
 536         }
 537
 538         dinfo = info->par;
 539         dinfo->info  = info;
 540         dinfo->fbops = &intel_fb_ops;
 541         dinfo->pdev  = pdev;
 542
 543         /* Reserve pixmap space. */
 544         info->pixmap.addr = kmalloc(64 * 1024, GFP_KERNEL);
 545         if (info->pixmap.addr == NULL) {
 546                 ERR_MSG("Cannot reserve pixmap memory.\n");
 547                 goto err_out_pixmap;
 548         }
 549         memset(info->pixmap.addr, 0, 64 * 1024);
 550
 551         /* set early this option because it could be changed by tv encoder
 552            driver */
 553         dinfo->fixed_mode = fixed;
 554
 555         /* Enable device. */
 556         if ((err = pci_enable_device(pdev))) {
 557                 ERR_MSG("Cannot enable device.\n");
 558                 cleanup(dinfo);
 559                 return -ENODEV;
 560         }
 561
 562         /* Set base addresses. */
 563         if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
 564             (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
 565             (ent->device == PCI_DEVICE_ID_INTEL_945G)  ||
 566             (ent->device == PCI_DEVICE_ID_INTEL_945GM)) {
 567                 aperture_bar = 2;
 568                 mmio_bar = 0;
 569         }
 570         dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
 571         dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
 572         dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
 573         DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
 574                 (unsigned long long)pci_resource_start(pdev, aperture_bar),
 575                 (unsigned long long)pci_resource_len(pdev, aperture_bar),
 576                 (unsigned long long)pci_resource_start(pdev, mmio_bar),
 577                 (unsigned long long)pci_resource_len(pdev, mmio_bar));
 578
 579         /* Reserve the fb and MMIO regions */
 580         if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
 581                                 INTELFB_MODULE_NAME)) {
 582                 ERR_MSG("Cannot reserve FB region.\n");
 583                 cleanup(dinfo);
 584                 return -ENODEV;
 585         }
 586
 587         dinfo->flag |= INTELFB_FB_ACQUIRED;
 588
 589         if (!request_mem_region(dinfo->mmio_base_phys,
 590                                 INTEL_REG_SIZE,
 591                                 INTELFB_MODULE_NAME)) {
 592                 ERR_MSG("Cannot reserve MMIO region.\n");
 593                 cleanup(dinfo);
 594                 return -ENODEV;
 595         }
 596
 597         dinfo->flag |= INTELFB_MMIO_ACQUIRED;
 598
 599         /* Get the chipset info. */
 600         dinfo->pci_chipset = pdev->device;
 601
 602         if (intelfbhw_get_chipset(pdev, dinfo)) {
 603                 cleanup(dinfo);
 604                 return -ENODEV;
 605         }
 606
 607         if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
 608                 cleanup(dinfo);
 609                 return -ENODEV;
 610         }
 611
 612         INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
 613                 "stolen memory %dkB\n",
 614                 pdev->bus->number, PCI_SLOT(pdev->devfn),
 615                 PCI_FUNC(pdev->devfn), dinfo->name,
 616                 BtoMB(aperture_size), BtoKB(stolen_size));
 617
 618         /* Set these from the options. */
 619         dinfo->accel    = accel;
 620         dinfo->hwcursor = hwcursor;
 621
 622         if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
 623                 INF_MSG("Acceleration is not supported for the %s chipset.\n",
 624                         dinfo->name);
 625                 dinfo->accel = 0;
 626         }
 627
 628         /* Framebuffer parameters - Use all the stolen memory if >= vram */
 629         if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
 630                 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
 631                 dinfo->fbmem_gart = 0;
 632         } else {
 633                 dinfo->fb.size =  MB(vram);
 634                 dinfo->fbmem_gart = 1;
 635         }
 636
 637         /* Allocate space for the ring buffer and HW cursor if enabled. */
 638         if (dinfo->accel) {
 639                 dinfo->ring.size = RINGBUFFER_SIZE;
 640                 dinfo->ring_tail_mask = dinfo->ring.size - 1;
 641         }
 642         if (dinfo->hwcursor) {
 643                 dinfo->cursor.size = HW_CURSOR_SIZE;
 644         }
 645
 646         /* Use agpgart to manage the GATT */
 647         if (!(bridge = agp_backend_acquire(pdev))) {
 648                 ERR_MSG("cannot acquire agp\n");
 649                 cleanup(dinfo);
 650                 return -ENODEV;
 651         }
 652
 653         /* get the current gatt info */
 654         if (agp_copy_info(bridge, &gtt_info)) {
 655                 ERR_MSG("cannot get agp info\n");
 656                 agp_backend_release(bridge);
 657                 cleanup(dinfo);
 658                 return -ENODEV;
 659         }
 660
 661         if (MB(voffset) < stolen_size)
 662                 offset = (stolen_size >> 12);
 663         else
 664                 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
 665
 666         /* set the mem offsets - set them after the already used pages */
 667         if (dinfo->accel) {
 668                 dinfo->ring.offset = offset + gtt_info.current_memory;
 669         }
 670         if (dinfo->hwcursor) {
 671                 dinfo->cursor.offset = offset +
 672                         + gtt_info.current_memory + (dinfo->ring.size >> 12);
 673         }
 674         if (dinfo->fbmem_gart) {
 675                 dinfo->fb.offset = offset +
 676                         + gtt_info.current_memory + (dinfo->ring.size >> 12)
 677                         + (dinfo->cursor.size >> 12);
 678         }
 679
 680         /* Allocate memories (which aren't stolen) */
 681         /* Map the fb and MMIO regions */
 682         /* ioremap only up to the end of used aperture */
 683         dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
 684                 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
 685                  + dinfo->fb.size);
 686         if (!dinfo->aperture.virtual) {
 687                 ERR_MSG("Cannot remap FB region.\n");
 688                 cleanup(dinfo);
 689                 return -ENODEV;
 690         }
 691
 692         dinfo->mmio_base =
 693                 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
 694                                                INTEL_REG_SIZE);
 695         if (!dinfo->mmio_base) {
 696                 ERR_MSG("Cannot remap MMIO region.\n");
 697                 cleanup(dinfo);
 698                 return -ENODEV;
 699         }
 700
 701         if (dinfo->accel) {
 702                 if (!(dinfo->gtt_ring_mem =
 703                       agp_allocate_memory(bridge, dinfo->ring.size >> 12,
 704                                           AGP_NORMAL_MEMORY))) {
 705                         ERR_MSG("cannot allocate ring buffer memory\n");
 706                         agp_backend_release(bridge);
 707                         cleanup(dinfo);
 708                         return -ENOMEM;
 709                 }
 710                 if (agp_bind_memory(dinfo->gtt_ring_mem,
 711                                     dinfo->ring.offset)) {
 712                         ERR_MSG("cannot bind ring buffer memory\n");
 713                         agp_backend_release(bridge);
 714                         cleanup(dinfo);
 715                         return -EBUSY;
 716                 }
 717                 dinfo->ring.physical = dinfo->aperture.physical
 718                         + (dinfo->ring.offset << 12);
 719                 dinfo->ring.virtual  = dinfo->aperture.virtual
 720                         + (dinfo->ring.offset << 12);
 721                 dinfo->ring_head = 0;
 722         }
 723         if (dinfo->hwcursor) {
 724                 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
 725                         : AGP_NORMAL_MEMORY;
 726                 if (!(dinfo->gtt_cursor_mem =
 727                       agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
 728                                           agp_memtype))) {
 729                         ERR_MSG("cannot allocate cursor memory\n");
 730                         agp_backend_release(bridge);
 731                         cleanup(dinfo);
 732                         return -ENOMEM;
 733                 }
 734                 if (agp_bind_memory(dinfo->gtt_cursor_mem,
 735                                     dinfo->cursor.offset)) {
 736                         ERR_MSG("cannot bind cursor memory\n");
 737                         agp_backend_release(bridge);
 738                         cleanup(dinfo);
 739                         return -EBUSY;
 740                 }
 741                 if (dinfo->mobile)
 742                         dinfo->cursor.physical
 743                                 = dinfo->gtt_cursor_mem->physical;
 744                 else
 745                         dinfo->cursor.physical = dinfo->aperture.physical
 746                                 + (dinfo->cursor.offset << 12);
 747                 dinfo->cursor.virtual = dinfo->aperture.virtual
 748                         + (dinfo->cursor.offset << 12);
 749         }
 750         if (dinfo->fbmem_gart) {
 751                 if (!(dinfo->gtt_fb_mem =
 752                       agp_allocate_memory(bridge, dinfo->fb.size >> 12,
 753                                           AGP_NORMAL_MEMORY))) {
 754                         WRN_MSG("cannot allocate framebuffer memory - use "
 755                                 "the stolen one\n");
 756                         dinfo->fbmem_gart = 0;
 757                 }
 758                 if (agp_bind_memory(dinfo->gtt_fb_mem,
 759                                     dinfo->fb.offset)) {
 760                         WRN_MSG("cannot bind framebuffer memory - use "
 761                                 "the stolen one\n");
 762                         dinfo->fbmem_gart = 0;
 763                 }
 764         }
 765
 766         /* update framebuffer memory parameters */
 767         if (!dinfo->fbmem_gart)
 768                 dinfo->fb.offset = 0;   /* starts at offset 0 */
 769         dinfo->fb.physical = dinfo->aperture.physical
 770                 + (dinfo->fb.offset << 12);
 771         dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
 772         dinfo->fb_start = dinfo->fb.offset << 12;
 773
 774         /* release agpgart */
 775         agp_backend_release(bridge);
 776
 777         if (mtrr)
 778                 set_mtrr(dinfo);
 779
 780         DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
 781                 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
 782                 dinfo->fb.virtual);
 783         DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
 784                 dinfo->mmio_base_phys, INTEL_REG_SIZE,
 785                 dinfo->mmio_base);
 786         DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
 787                 dinfo->ring.physical, dinfo->ring.size,
 788                 dinfo->ring.virtual);
 789         DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
 790                 dinfo->cursor.physical, dinfo->cursor.size,
 791                 dinfo->cursor.virtual, dinfo->cursor.offset,
 792                 dinfo->cursor.physical);
 793
 794         DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
 795                 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
 796         DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
 797
 798         if (probeonly)
 799                 bailout(dinfo);
 800
 801         /*
 802          * Check if the LVDS port or any DVO ports are enabled.  If so,
 803          * don't allow mode switching
 804          */
 805         dvo = intelfbhw_check_non_crt(dinfo);
 806         if (dvo) {
 807                 dinfo->fixed_mode = 1;
 808                 WRN_MSG("Non-CRT device is enabled ( ");
 809                 i = 0;
 810                 while (dvo) {
 811                         if (dvo & 1) {
 812                                 s = intelfbhw_dvo_to_string(1 << i);
 813                                 if (s)
 814                                         printk("%s ", s);
 815                         }
 816                         dvo >>= 1;
 817                         ++i;
 818                 }
 819                 printk(").  Disabling mode switching.\n");
 820         }
 821
 822         if (bailearly == 1)
 823                 bailout(dinfo);
 824
 825         if (FIXED_MODE(dinfo) && ORIG_VIDEO_ISVGA != VIDEO_TYPE_VLFB) {
 826                 ERR_MSG("Video mode must be programmed at boot time.\n");
 827                 cleanup(dinfo);
 828                 return -ENODEV;
 829         }
 830
 831         if (bailearly == 2)
 832                 bailout(dinfo);
 833
 834         /* Initialise dinfo and related data. */
 835         /* If an initial mode was programmed at boot time, get its details. */
 836         if (ORIG_VIDEO_ISVGA == VIDEO_TYPE_VLFB)
 837                 get_initial_mode(dinfo);
 838
 839         if (bailearly == 3)
 840                 bailout(dinfo);
 841
 842         if (FIXED_MODE(dinfo)) {
 843                 /* remap fb address */
 844                 update_dinfo(dinfo, &dinfo->initial_var);
 845         }
 846
 847         if (bailearly == 4)
 848                 bailout(dinfo);
 849
 850
 851         if (intelfb_set_fbinfo(dinfo)) {
 852                 cleanup(dinfo);
 853                 return -ENODEV;
 854         }
 855
 856         if (bailearly == 5)
 857                 bailout(dinfo);
 858
 859 #ifdef CONFIG_FB_INTEL_I2C
 860         /* register I2C bus */
 861         intelfb_create_i2c_busses(dinfo);
 862 #endif
 863
 864         if (bailearly == 6)
 865                 bailout(dinfo);
 866
 867         pci_set_drvdata(pdev, dinfo);
 868
 869         /* Save the initial register state. */
 870         i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
 871                                     bailearly > 6 ? bailearly - 6 : 0);
 872         if (i != 0) {
 873                 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
 874                 bailout(dinfo);
 875         }
 876
 877         intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
 878
 879         if (bailearly == 18)
 880                 bailout(dinfo);
 881
 882         /* Cursor initialisation */
 883         if (dinfo->hwcursor) {
 884                 intelfbhw_cursor_init(dinfo);
 885                 intelfbhw_cursor_reset(dinfo);
 886         }
 887
 888         if (bailearly == 19)
 889                 bailout(dinfo);
 890
 891         /* 2d acceleration init */
 892         if (dinfo->accel)
 893                 intelfbhw_2d_start(dinfo);
 894
 895         if (bailearly == 20)
 896                 bailout(dinfo);
 897
 898         if (noregister)
 899                 bailout(dinfo);
 900
 901         if (register_framebuffer(dinfo->info) < 0) {
 902                 ERR_MSG("Cannot register framebuffer.\n");
 903                 cleanup(dinfo);
 904                 return -ENODEV;
 905         }
 906
 907         dinfo->registered = 1;
 908         dinfo->open = 0;
 909
 910         init_waitqueue_head(&dinfo->vsync.wait);
 911         spin_lock_init(&dinfo->int_lock);
 912         dinfo->irq_flags = 0;
 913         dinfo->vsync.pan_display = 0;
 914         dinfo->vsync.pan_offset = 0;
 915
 916         return 0;
 917
 918 err_out_pixmap:
 919         fb_dealloc_cmap(&info->cmap);
 920 err_out_cmap:
 921         framebuffer_release(info);
 922         return -ENODEV;
 923 }
 924
 925 static void __devexit
 926 intelfb_pci_unregister(struct pci_dev *pdev)
 927 {
 928         struct intelfb_info *dinfo = pci_get_drvdata(pdev);
 929
 930         DBG_MSG("intelfb_pci_unregister\n");
 931
 932         if (!dinfo)
 933                 return;
 934
 935         cleanup(dinfo);
 936
 937         pci_set_drvdata(pdev, NULL);
 938 }
 939
 940 /***************************************************************
 941  *                       helper functions                      *
 942  ***************************************************************/
 943
 944 int __inline__
 945 intelfb_var_to_depth(const struct fb_var_screeninfo *var)
 946 {
 947         DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
 948                 var->bits_per_pixel, var->green.length);
 949
 950         switch (var->bits_per_pixel) {
 951         case 16:
 952                 return (var->green.length == 6) ? 16 : 15;
 953         case 32:
 954                 return 24;
 955         default:
 956                 return var->bits_per_pixel;
 957         }
 958 }
 959
 960
 961 static __inline__ int
 962 var_to_refresh(const struct fb_var_screeninfo *var)
 963 {
 964         int xtot = var->xres + var->left_margin + var->right_margin +
 965                    var->hsync_len;
 966         int ytot = var->yres + var->upper_margin + var->lower_margin +
 967                    var->vsync_len;
 968
 969         return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
 970 }
 971
 972 /***************************************************************
 973  *                Various intialisation functions              *
 974  ***************************************************************/
 975
 976 static void __devinit
 977 get_initial_mode(struct intelfb_info *dinfo)
 978 {
 979         struct fb_var_screeninfo *var;
 980         int xtot, ytot;
 981
 982         DBG_MSG("get_initial_mode\n");
 983
 984         dinfo->initial_vga = 1;
 985         dinfo->initial_fb_base = screen_info.lfb_base;
 986         dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
 987         dinfo->initial_pitch = screen_info.lfb_linelength;
 988
 989         var = &dinfo->initial_var;
 990         memset(var, 0, sizeof(*var));
 991         var->xres = screen_info.lfb_width;
 992         var->yres = screen_info.lfb_height;
 993         var->bits_per_pixel = screen_info.lfb_depth;
 994         switch (screen_info.lfb_depth) {
 995         case 15:
 996                 var->bits_per_pixel = 16;
 997                 break;
 998         case 24:
 999                 var->bits_per_pixel = 32;
1000                 break;
1001         }
1002
1003         DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
1004                 dinfo->initial_fb_base, dinfo->initial_video_ram,
1005                 BtoKB(dinfo->initial_video_ram));
1006
1007         DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
1008                 var->xres, var->yres, var->bits_per_pixel,
1009                 dinfo->initial_pitch);
1010
1011         /* Dummy timing values (assume 60Hz) */
1012         var->left_margin = (var->xres / 8) & 0xf8;
1013         var->right_margin = 32;
1014         var->upper_margin = 16;
1015         var->lower_margin = 4;
1016         var->hsync_len = (var->xres / 8) & 0xf8;
1017         var->vsync_len = 4;
1018
1019         xtot = var->xres + var->left_margin +
1020                 var->right_margin + var->hsync_len;
1021         ytot = var->yres + var->upper_margin +
1022                 var->lower_margin + var->vsync_len;
1023         var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1024
1025         var->height = -1;
1026         var->width = -1;
1027
1028         if (var->bits_per_pixel > 8) {
1029                 var->red.offset = screen_info.red_pos;
1030                 var->red.length = screen_info.red_size;
1031                 var->green.offset = screen_info.green_pos;
1032                 var->green.length = screen_info.green_size;
1033                 var->blue.offset = screen_info.blue_pos;
1034                 var->blue.length = screen_info.blue_size;
1035                 var->transp.offset = screen_info.rsvd_pos;
1036                 var->transp.length = screen_info.rsvd_size;
1037         } else {
1038                 var->red.length = 8;
1039                 var->green.length = 8;
1040                 var->blue.length = 8;
1041         }
1042 }
1043
1044 static int __devinit
1045 intelfb_init_var(struct intelfb_info *dinfo)
1046 {
1047         struct fb_var_screeninfo *var;
1048         int msrc = 0;
1049
1050         DBG_MSG("intelfb_init_var\n");
1051
1052         var = &dinfo->info->var;
1053         if (FIXED_MODE(dinfo)) {
1054                 memcpy(var, &dinfo->initial_var,
1055                        sizeof(struct fb_var_screeninfo));
1056                 msrc = 5;
1057         } else {
1058                 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1059                 u8 *edid_d = NULL;
1060
1061                 if (edid_s) {
1062                         edid_d = kmalloc(EDID_LENGTH, GFP_KERNEL);
1063
1064                         if (edid_d) {
1065                                 memcpy(edid_d, edid_s, EDID_LENGTH);
1066                                 fb_edid_to_monspecs(edid_d,
1067                                                     &dinfo->info->monspecs);
1068                                 kfree(edid_d);
1069                         }
1070                 }
1071
1072                 if (mode) {
1073                         printk("intelfb: Looking for mode in private "
1074                                "database\n");
1075                         msrc = fb_find_mode(var, dinfo->info, mode,
1076                                             dinfo->info->monspecs.modedb,
1077                                             dinfo->info->monspecs.modedb_len,
1078                                             NULL, 0);
1079
1080                         if (msrc && msrc > 1) {
1081                                 printk("intelfb: No mode in private database, "
1082                                        "intelfb: looking for mode in global "
1083                                        "database ");
1084                                 msrc = fb_find_mode(var, dinfo->info, mode,
1085                                                     NULL, 0, NULL, 0);
1086
1087                                 if (msrc)
1088                                         msrc |= 8;
1089                         }
1090
1091                 }
1092
1093                 if (!msrc) {
1094                         msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1095                                             NULL, 0, NULL, 0);
1096                 }
1097         }
1098
1099         if (!msrc) {
1100                 ERR_MSG("Cannot find a suitable video mode.\n");
1101                 return 1;
1102         }
1103
1104         INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1105                 var->bits_per_pixel, var_to_refresh(var));
1106
1107         DBG_MSG("Initial video mode is from %d.\n", msrc);
1108
1109 #if ALLOCATE_FOR_PANNING
1110         /* Allow use of half of the video ram for panning */
1111         var->xres_virtual = var->xres;
1112         var->yres_virtual =
1113                 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1114         if (var->yres_virtual < var->yres)
1115                 var->yres_virtual = var->yres;
1116 #else
1117         var->yres_virtual = var->yres;
1118 #endif
1119
1120         if (dinfo->accel)
1121                 var->accel_flags |= FB_ACCELF_TEXT;
1122         else
1123                 var->accel_flags &= ~FB_ACCELF_TEXT;
1124
1125         return 0;
1126 }
1127
1128 static int __devinit
1129 intelfb_set_fbinfo(struct intelfb_info *dinfo)
1130 {
1131         struct fb_info *info = dinfo->info;
1132
1133         DBG_MSG("intelfb_set_fbinfo\n");
1134
1135         info->flags = FBINFO_FLAG_DEFAULT;
1136         info->fbops = &intel_fb_ops;
1137         info->pseudo_palette = dinfo->pseudo_palette;
1138
1139         info->pixmap.size = 64*1024;
1140         info->pixmap.buf_align = 8;
1141         info->pixmap.access_align = 32;
1142         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1143
1144         if (intelfb_init_var(dinfo))
1145                 return 1;
1146
1147         info->pixmap.scan_align = 1;
1148         strcpy(info->fix.id, dinfo->name);
1149         info->fix.smem_start = dinfo->fb.physical;
1150         info->fix.smem_len = dinfo->fb.size;
1151         info->fix.type = FB_TYPE_PACKED_PIXELS;
1152         info->fix.type_aux = 0;
1153         info->fix.xpanstep = 8;
1154         info->fix.ypanstep = 1;
1155         info->fix.ywrapstep = 0;
1156         info->fix.mmio_start = dinfo->mmio_base_phys;
1157         info->fix.mmio_len = INTEL_REG_SIZE;
1158         info->fix.accel = FB_ACCEL_I830;
1159         update_dinfo(dinfo, &info->var);
1160
1161         return 0;
1162 }
1163
1164 /* Update dinfo to match the active video mode. */
1165 static void
1166 update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var)
1167 {
1168         DBG_MSG("update_dinfo\n");
1169
1170         dinfo->bpp = var->bits_per_pixel;
1171         dinfo->depth = intelfb_var_to_depth(var);
1172         dinfo->xres = var->xres;
1173         dinfo->yres = var->xres;
1174         dinfo->pixclock = var->pixclock;
1175
1176         dinfo->info->fix.visual = dinfo->visual;
1177         dinfo->info->fix.line_length = dinfo->pitch;
1178
1179         switch (dinfo->bpp) {
1180         case 8:
1181                 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1182                 dinfo->pitch = var->xres_virtual;
1183                 break;
1184         case 16:
1185                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1186                 dinfo->pitch = var->xres_virtual * 2;
1187                 break;
1188         case 32:
1189                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1190                 dinfo->pitch = var->xres_virtual * 4;
1191                 break;
1192         }
1193
1194         /* Make sure the line length is a aligned correctly. */
1195         if (IS_I9XX(dinfo))
1196                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1197         else
1198                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1199
1200         if (FIXED_MODE(dinfo))
1201                 dinfo->pitch = dinfo->initial_pitch;
1202
1203         dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1204         dinfo->info->fix.line_length = dinfo->pitch;
1205         dinfo->info->fix.visual = dinfo->visual;
1206 }
1207
1208 /* fbops functions */
1209
1210 /***************************************************************
1211  *                       fbdev interface                       *
1212  ***************************************************************/
1213
1214 static int
1215 intelfb_open(struct fb_info *info, int user)
1216 {
1217         struct intelfb_info *dinfo = GET_DINFO(info);
1218
1219         if (user) {
1220                 dinfo->open++;
1221         }
1222
1223         return 0;
1224 }
1225
1226 static int
1227 intelfb_release(struct fb_info *info, int user)
1228 {
1229         struct intelfb_info *dinfo = GET_DINFO(info);
1230
1231         if (user) {
1232                 dinfo->open--;
1233                 msleep(1);
1234                 if (!dinfo->open) {
1235                         intelfbhw_disable_irq(dinfo);
1236                 }
1237         }
1238
1239         return 0;
1240 }
1241
1242 static int
1243 intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1244 {
1245         int change_var = 0;
1246         struct fb_var_screeninfo v;
1247         struct intelfb_info *dinfo;
1248         static int first = 1;
1249         int i;
1250         /* Good pitches to allow tiling.  Don't care about pitches < 1024. */
1251         static const int pitches[] = {
1252                 128 * 8,
1253                 128 * 16,
1254                 128 * 32,
1255                 128 * 64,
1256                 0
1257         };
1258
1259         DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1260
1261         dinfo = GET_DINFO(info);
1262
1263         /* update the pitch */
1264         if (intelfbhw_validate_mode(dinfo, var) != 0)
1265                 return -EINVAL;
1266
1267         v = *var;
1268
1269         for (i = 0; pitches[i] != 0; i++) {
1270                 if (pitches[i] >= v.xres_virtual) {
1271                         v.xres_virtual = pitches[i];
1272                         break;
1273                 }
1274         }
1275
1276         /* Check for a supported bpp. */
1277         if (v.bits_per_pixel <= 8) {
1278                 v.bits_per_pixel = 8;
1279         } else if (v.bits_per_pixel <= 16) {
1280                 if (v.bits_per_pixel == 16)
1281                         v.green.length = 6;
1282                 v.bits_per_pixel = 16;
1283         } else if (v.bits_per_pixel <= 32) {
1284                 v.bits_per_pixel = 32;
1285         } else
1286                 return -EINVAL;
1287
1288         change_var = ((info->var.xres != var->xres) ||
1289                       (info->var.yres != var->yres) ||
1290                       (info->var.xres_virtual != var->xres_virtual) ||
1291                       (info->var.yres_virtual != var->yres_virtual) ||
1292                       (info->var.bits_per_pixel != var->bits_per_pixel) ||
1293                       memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1294                       memcmp(&info->var.green, &var->green,
1295                              sizeof(var->green)) ||
1296                       memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1297
1298         if (FIXED_MODE(dinfo) &&
1299             (change_var ||
1300              var->yres_virtual > dinfo->initial_var.yres_virtual ||
1301              var->yres_virtual < dinfo->initial_var.yres ||
1302              var->xoffset || var->nonstd)) {
1303                 if (first) {
1304                         ERR_MSG("Changing the video mode is not supported.\n");
1305                         first = 0;
1306                 }
1307                 return -EINVAL;
1308         }
1309
1310         switch (intelfb_var_to_depth(&v)) {
1311         case 8:
1312                 v.red.offset = v.green.offset = v.blue.offset = 0;
1313                 v.red.length = v.green.length = v.blue.length = 8;
1314                 v.transp.offset = v.transp.length = 0;
1315                 break;
1316         case 15:
1317                 v.red.offset = 10;
1318                 v.green.offset = 5;
1319                 v.blue.offset = 0;
1320                 v.red.length = v.green.length = v.blue.length = 5;
1321                 v.transp.offset = v.transp.length = 0;
1322                 break;
1323         case 16:
1324                 v.red.offset = 11;
1325                 v.green.offset = 5;
1326                 v.blue.offset = 0;
1327                 v.red.length = 5;
1328                 v.green.length = 6;
1329                 v.blue.length = 5;
1330                 v.transp.offset = v.transp.length = 0;
1331                 break;
1332         case 24:
1333                 v.red.offset = 16;
1334                 v.green.offset = 8;
1335                 v.blue.offset = 0;
1336                 v.red.length = v.green.length = v.blue.length = 8;
1337                 v.transp.offset = v.transp.length = 0;
1338                 break;
1339         case 32:
1340                 v.red.offset = 16;
1341                 v.green.offset = 8;
1342                 v.blue.offset = 0;
1343                 v.red.length = v.green.length = v.blue.length = 8;
1344                 v.transp.offset = 24;
1345                 v.transp.length = 8;
1346                 break;
1347         }
1348
1349         if (v.xoffset < 0)
1350                 v.xoffset = 0;
1351         if (v.yoffset < 0)
1352                 v.yoffset = 0;
1353
1354         if (v.xoffset > v.xres_virtual - v.xres)
1355                 v.xoffset = v.xres_virtual - v.xres;
1356         if (v.yoffset > v.yres_virtual - v.yres)
1357                 v.yoffset = v.yres_virtual - v.yres;
1358
1359         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1360                           v.transp.msb_right = 0;
1361
1362         *var = v;
1363
1364         return 0;
1365 }
1366
1367 static int
1368 intelfb_set_par(struct fb_info *info)
1369 {
1370         struct intelfb_hwstate *hw;
1371         struct intelfb_info *dinfo = GET_DINFO(info);
1372
1373         if (FIXED_MODE(dinfo)) {
1374                 ERR_MSG("Changing the video mode is not supported.\n");
1375                 return -EINVAL;
1376         }
1377
1378         hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1379         if (!hw)
1380                 return -ENOMEM;
1381
1382         DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1383                 info->var.yres, info->var.bits_per_pixel);
1384
1385         intelfb_blank(FB_BLANK_POWERDOWN, info);
1386
1387         if (ACCEL(dinfo, info))
1388                 intelfbhw_2d_stop(dinfo);
1389
1390         memcpy(hw, &dinfo->save_state, sizeof(*hw));
1391         if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1392                 goto invalid_mode;
1393         if (intelfbhw_program_mode(dinfo, hw, 0))
1394                 goto invalid_mode;
1395
1396 #if REGDUMP > 0
1397         intelfbhw_read_hw_state(dinfo, hw, 0);
1398         intelfbhw_print_hw_state(dinfo, hw);
1399 #endif
1400
1401         update_dinfo(dinfo, &info->var);
1402
1403         if (ACCEL(dinfo, info))
1404                 intelfbhw_2d_start(dinfo);
1405
1406         intelfb_pan_display(&info->var, info);
1407
1408         intelfb_blank(FB_BLANK_UNBLANK, info);
1409
1410         if (ACCEL(dinfo, info)) {
1411                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1412                 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1413                 FBINFO_HWACCEL_IMAGEBLIT;
1414         } else {
1415                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1416         }
1417         kfree(hw);
1418         return 0;
1419 invalid_mode:
1420         kfree(hw);
1421         return -EINVAL;
1422 }
1423
1424 static int
1425 intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1426                   unsigned blue, unsigned transp, struct fb_info *info)
1427 {
1428         struct intelfb_info *dinfo = GET_DINFO(info);
1429
1430 #if VERBOSE > 0
1431         DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1432 #endif
1433
1434         if (regno > 255)
1435                 return 1;
1436
1437         if (dinfo->depth == 8) {
1438                 red >>= 8;
1439                 green >>= 8;
1440                 blue >>= 8;
1441
1442                 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1443                                     transp);
1444         }
1445
1446         if (regno < 16) {
1447                 switch (dinfo->depth) {
1448                 case 15:
1449                         dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1450                                 ((green & 0xf800) >>  6) |
1451                                 ((blue & 0xf800) >> 11);
1452                         break;
1453                 case 16:
1454                         dinfo->pseudo_palette[regno] = (red & 0xf800) |
1455                                 ((green & 0xfc00) >>  5) |
1456                                 ((blue  & 0xf800) >> 11);
1457                         break;
1458                 case 24:
1459                         dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1460                                 (green & 0xff00) |
1461                                 ((blue  & 0xff00) >> 8);
1462                         break;
1463                 }
1464         }
1465
1466         return 0;
1467 }
1468
1469 static int
1470 intelfb_blank(int blank, struct fb_info *info)
1471 {
1472         intelfbhw_do_blank(blank, info);
1473         return 0;
1474 }
1475
1476 static int
1477 intelfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1478 {
1479         intelfbhw_pan_display(var, info);
1480         return 0;
1481 }
1482
1483 /* When/if we have our own ioctls. */
1484 static int
1485 intelfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
1486 {
1487         int retval = 0;
1488         struct intelfb_info *dinfo = GET_DINFO(info);
1489         u32 pipe = 0;
1490
1491         switch (cmd) {
1492                 case FBIO_WAITFORVSYNC:
1493                         if (get_user(pipe, (__u32 __user *)arg))
1494                                 return -EFAULT;
1495
1496                         retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1497                         break;
1498                 default:
1499                         break;
1500         }
1501
1502         return retval;
1503 }
1504
1505 static void
1506 intelfb_fillrect (struct fb_info *info, const struct fb_fillrect *rect)
1507 {
1508         struct intelfb_info *dinfo = GET_DINFO(info);
1509         u32 rop, color;
1510
1511 #if VERBOSE > 0
1512         DBG_MSG("intelfb_fillrect\n");
1513 #endif
1514
1515         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1516                 return cfb_fillrect(info, rect);
1517
1518         if (rect->rop == ROP_COPY)
1519                 rop = PAT_ROP_GXCOPY;
1520         else // ROP_XOR
1521                 rop = PAT_ROP_GXXOR;
1522
1523         if (dinfo->depth != 8)
1524                 color = dinfo->pseudo_palette[rect->color];
1525         else
1526                 color = rect->color;
1527
1528         intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1529                               rect->width, rect->height, color,
1530                               dinfo->pitch, info->var.bits_per_pixel,
1531                               rop);
1532 }
1533
1534 static void
1535 intelfb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
1536 {
1537         struct intelfb_info *dinfo = GET_DINFO(info);
1538
1539 #if VERBOSE > 0
1540         DBG_MSG("intelfb_copyarea\n");
1541 #endif
1542
1543         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1544                 return cfb_copyarea(info, region);
1545
1546         intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1547                             region->dy, region->width, region->height,
1548                             dinfo->pitch, info->var.bits_per_pixel);
1549 }
1550
1551 static void
1552 intelfb_imageblit(struct fb_info *info, const struct fb_image *image)
1553 {
1554         struct intelfb_info *dinfo = GET_DINFO(info);
1555         u32 fgcolor, bgcolor;
1556
1557 #if VERBOSE > 0
1558         DBG_MSG("intelfb_imageblit\n");
1559 #endif
1560
1561         if (!ACCEL(dinfo, info) || dinfo->depth == 4
1562             || image->depth != 1)
1563                 return cfb_imageblit(info, image);
1564
1565         if (dinfo->depth != 8) {
1566                 fgcolor = dinfo->pseudo_palette[image->fg_color];
1567                 bgcolor = dinfo->pseudo_palette[image->bg_color];
1568         } else {
1569                 fgcolor = image->fg_color;
1570                 bgcolor = image->bg_color;
1571         }
1572
1573         if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1574                                     image->height, image->data,
1575                                     image->dx, image->dy,
1576                                     dinfo->pitch, info->var.bits_per_pixel))
1577                 return cfb_imageblit(info, image);
1578 }
1579
1580 static int
1581 intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1582 {
1583         struct intelfb_info *dinfo = GET_DINFO(info);
1584         u32 physical;
1585 #if VERBOSE > 0
1586         DBG_MSG("intelfb_cursor\n");
1587 #endif
1588
1589         if (!dinfo->hwcursor)
1590                 return -ENODEV;
1591
1592         intelfbhw_cursor_hide(dinfo);
1593
1594         /* If XFree killed the cursor - restore it */
1595         physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1596                    (dinfo->cursor.offset << 12);
1597
1598         if (INREG(CURSOR_A_BASEADDR) != physical) {
1599                 u32 fg, bg;
1600
1601                 DBG_MSG("the cursor was killed - restore it !!\n");
1602                 DBG_MSG("size %d, %d   pos %d, %d\n",
1603                         cursor->image.width, cursor->image.height,
1604                         cursor->image.dx, cursor->image.dy);
1605
1606                 intelfbhw_cursor_init(dinfo);
1607                 intelfbhw_cursor_reset(dinfo);
1608                 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1609                                         cursor->image.dy);
1610
1611                 if (dinfo->depth != 8) {
1612                         fg =dinfo->pseudo_palette[cursor->image.fg_color];
1613                         bg =dinfo->pseudo_palette[cursor->image.bg_color];
1614                 } else {
1615                         fg = cursor->image.fg_color;
1616                         bg = cursor->image.bg_color;
1617                 }
1618                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1619                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1620                                       cursor->image.height,
1621                                       dinfo->cursor_src);
1622
1623                 if (cursor->enable)
1624                         intelfbhw_cursor_show(dinfo);
1625                 return 0;
1626         }
1627
1628         if (cursor->set & FB_CUR_SETPOS) {
1629                 u32 dx, dy;
1630
1631                 dx = cursor->image.dx - info->var.xoffset;
1632                 dy = cursor->image.dy - info->var.yoffset;
1633
1634                 intelfbhw_cursor_setpos(dinfo, dx, dy);
1635         }
1636
1637         if (cursor->set & FB_CUR_SETSIZE) {
1638                 if (cursor->image.width > 64 || cursor->image.height > 64)
1639                         return -ENXIO;
1640
1641                 intelfbhw_cursor_reset(dinfo);
1642         }
1643
1644         if (cursor->set & FB_CUR_SETCMAP) {
1645                 u32 fg, bg;
1646
1647                 if (dinfo->depth != 8) {
1648                         fg = dinfo->pseudo_palette[cursor->image.fg_color];
1649                         bg = dinfo->pseudo_palette[cursor->image.bg_color];
1650                 } else {
1651                         fg = cursor->image.fg_color;
1652                         bg = cursor->image.bg_color;
1653                 }
1654
1655                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1656         }
1657
1658         if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1659                 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1660                 u32 size = s_pitch * cursor->image.height;
1661                 u8 *dat = (u8 *) cursor->image.data;
1662                 u8 *msk = (u8 *) cursor->mask;
1663                 u8 src[64];
1664                 u32 i;
1665
1666                 if (cursor->image.depth != 1)
1667                         return -ENXIO;
1668
1669                 switch (cursor->rop) {
1670                 case ROP_XOR:
1671                         for (i = 0; i < size; i++)
1672                                 src[i] = dat[i] ^ msk[i];
1673                         break;
1674                 case ROP_COPY:
1675                 default:
1676                         for (i = 0; i < size; i++)
1677                                 src[i] = dat[i] & msk[i];
1678                         break;
1679                 }
1680
1681                 /* save the bitmap to restore it when XFree will
1682                    make the cursor dirty */
1683                 memcpy(dinfo->cursor_src, src, size);
1684
1685                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1686                                       cursor->image.height, src);
1687         }
1688
1689         if (cursor->enable)
1690                 intelfbhw_cursor_show(dinfo);
1691
1692         return 0;
1693 }
1694
1695 static int
1696 intelfb_sync(struct fb_info *info)
1697 {
1698         struct intelfb_info *dinfo = GET_DINFO(info);
1699
1700 #if VERBOSE > 0
1701         DBG_MSG("intelfb_sync\n");
1702 #endif
1703
1704         if (dinfo->ring_lockup)
1705                 return 0;
1706
1707         intelfbhw_do_sync(dinfo);
1708         return 0;
1709 }
1710