git.oblomov.eu Git - 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  * integrated graphics chips.
   6  *
   7  * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org>
   8  *                   2004 Sylvain Meyer
   9  *
  10  * This driver consists of two parts.  The first part (intelfbdrv.c) provides
  11  * the basic fbdev interfaces, is derived in part from the radeonfb and
  12  * vesafb drivers, and is covered by the GPL.  The second part (intelfbhw.c)
  13  * provides the code to program the hardware.  Most of it is derived from
  14  * the i810/i830 XFree86 driver.  The HW-specific code is covered here
  15  * under a dual license (GPL and MIT/XFree86 license).
  16  *
  17  * Author: David Dawes
  18  *
  19  */
  20
  21 /* $DHD: intelfb/intelfbdrv.c,v 1.20 2003/06/27 15:17:40 dawes Exp $ */
  22
  23 /*
  24  * Changes:
  25  *    01/2003 - Initial driver (0.1.0), no mode switching, no acceleration.
  26  *              This initial version is a basic core that works a lot like
  27  *              the vesafb driver.  It must be built-in to the kernel,
  28  *              and the initial video mode must be set with vga=XXX at
  29  *              boot time.  (David Dawes)
  30  *
  31  *    01/2003 - Version 0.2.0: Mode switching added, colormap support
  32  *              implemented, Y panning, and soft screen blanking implemented.
  33  *              No acceleration yet.  (David Dawes)
  34  *
  35  *    01/2003 - Version 0.3.0: fbcon acceleration support added.  Module
  36  *              option handling added.  (David Dawes)
  37  *
  38  *    01/2003 - Version 0.4.0: fbcon HW cursor support added.  (David Dawes)
  39  *
  40  *    01/2003 - Version 0.4.1: Add auto-generation of built-in modes.
  41  *              (David Dawes)
  42  *
  43  *    02/2003 - Version 0.4.2: Add check for active non-CRT devices, and
  44  *              mode validation checks.  (David Dawes)
  45  *
  46  *    02/2003 - Version 0.4.3: Check when the VC is in graphics mode so that
  47  *              acceleration is disabled while an XFree86 server is running.
  48  *              (David Dawes)
  49  *
  50  *    02/2003 - Version 0.4.4: Monitor DPMS support.  (David Dawes)
  51  *
  52  *    02/2003 - Version 0.4.5: Basic XFree86 + fbdev working.  (David Dawes)
  53  *
  54  *    02/2003 - Version 0.5.0: Modify to work with the 2.5.32 kernel as well
  55  *              as 2.4.x kernels.  (David Dawes)
  56  *
  57  *    02/2003 - Version 0.6.0: Split out HW-specifics into a separate file.
  58  *              (David Dawes)
  59  *
  60  *    02/2003 - Version 0.7.0: Test on 852GM/855GM.  Acceleration and HW
  61  *              cursor are disabled on this platform.  (David Dawes)
  62  *
  63  *    02/2003 - Version 0.7.1: Test on 845G.  Acceleration is disabled
  64  *              on this platform.  (David Dawes)
  65  *
  66  *    02/2003 - Version 0.7.2: Test on 830M.  Acceleration and HW
  67  *              cursor are disabled on this platform.  (David Dawes)
  68  *
  69  *    02/2003 - Version 0.7.3: Fix 8-bit modes for mobile platforms
  70  *              (David Dawes)
  71  *
  72  *    02/2003 - Version 0.7.4: Add checks for FB and FBCON_HAS_CFB* configured
  73  *              in the kernel, and add mode bpp verification and default
  74  *              bpp selection based on which FBCON_HAS_CFB* are configured.
  75  *              (David Dawes)
  76  *
  77  *    02/2003 - Version 0.7.5: Add basic package/install scripts based on the
  78  *              DRI packaging scripts.  (David Dawes)
  79  *
  80  *    04/2003 - Version 0.7.6: Fix typo that affects builds with SMP-enabled
  81  *              kernels.  (David Dawes, reported by Anupam).
  82  *
  83  *    06/2003 - Version 0.7.7:
  84  *              Fix Makefile.kernel build problem (Tsutomu Yasuda).
  85  *              Fix mis-placed #endif (2.4.21 kernel).
  86  *
  87  *    09/2004 - Version 0.9.0 - by Sylvain Meyer
  88  *              Port to linux 2.6 kernel fbdev
  89  *              Fix HW accel and HW cursor on i845G
  90  *              Use of agpgart for fb memory reservation
  91  *              Add mtrr support
  92  *
  93  *    10/2004 - Version 0.9.1
  94  *              Use module_param instead of old MODULE_PARM
  95  *              Some cleanup
  96  *
  97  *    11/2004 - Version 0.9.2
  98  *              Add vram option to reserve more memory than stolen by BIOS
  99  *              Fix intelfbhw_pan_display typo
 100  *              Add __initdata annotations
 101  *
 102  * TODO:
 103  *
 104  *
 105  * Wish List:
 106  *
 107  *
 108  */
 109
 110 #include <linux/config.h>
 111 #include <linux/module.h>
 112 #include <linux/kernel.h>
 113 #include <linux/errno.h>
 114 #include <linux/string.h>
 115 #include <linux/mm.h>
 116 #include <linux/tty.h>
 117 #include <linux/slab.h>
 118 #include <linux/delay.h>
 119 #include <linux/fb.h>
 120 #include <linux/ioport.h>
 121 #include <linux/init.h>
 122 #include <linux/pci.h>
 123 #include <linux/vmalloc.h>
 124 #include <linux/pagemap.h>
 125 #include <linux/version.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
 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_get_fix(struct fb_fix_screeninfo *fix,
 140                            struct fb_info *info);
 141
 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 inode *inode, struct file *file,
 165                          unsigned int cmd, unsigned long arg,
 166                          struct fb_info *info);
 167
 168 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
 169                                           const struct pci_device_id *ent);
 170 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
 171 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
 172
 173 /*
 174  * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
 175  * mobile chipsets from being registered.
 176  */
 177 #if DETECT_VGA_CLASS_ONLY
 178 #define INTELFB_CLASS_MASK ~0 << 8
 179 #else
 180 #define INTELFB_CLASS_MASK 0
 181 #endif
 182
 183 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
 184         { 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 },
 185         { 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 },
 186         { 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 },
 187         { 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 },
 188         { 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 },
 189         { 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 },
 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_check_var =         intelfb_check_var,
 200         .fb_set_par =           intelfb_set_par,
 201         .fb_setcolreg =         intelfb_setcolreg,
 202         .fb_blank =             intelfb_blank,
 203         .fb_pan_display =       intelfb_pan_display,
 204         .fb_fillrect  =         intelfb_fillrect,
 205         .fb_copyarea  =         intelfb_copyarea,
 206         .fb_imageblit =         intelfb_imageblit,
 207         .fb_cursor =            intelfb_cursor,
 208         .fb_sync =              intelfb_sync,
 209         .fb_ioctl =             intelfb_ioctl
 210 };
 211
 212 /* PCI driver module table */
 213 static struct pci_driver intelfb_driver = {
 214         .name =         "intelfb",
 215         .id_table =     intelfb_pci_table,
 216         .probe =        intelfb_pci_register,
 217         .remove =       __devexit_p(intelfb_pci_unregister)
 218 };
 219
 220 /* Module description/parameters */
 221 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
 222               "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
 223 MODULE_DESCRIPTION(
 224         "Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS " chipsets");
 225 MODULE_LICENSE("Dual BSD/GPL");
 226 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
 227
 228 static int accel        = 1;
 229 static int vram         = 4;
 230 static int hwcursor     = 0;
 231 static int mtrr         = 1;
 232 static int fixed        = 0;
 233 static int noinit       = 0;
 234 static int noregister   = 0;
 235 static int probeonly    = 0;
 236 static int idonly       = 0;
 237 static int bailearly    = 0;
 238 static int voffset      = 48;
 239 static char *mode       = NULL;
 240
 241 module_param(accel, bool, S_IRUGO);
 242 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
 243 module_param(vram, int, S_IRUGO);
 244 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
 245 module_param(voffset, int, S_IRUGO);
 246 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
 247 module_param(hwcursor, bool, S_IRUGO);
 248 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
 249 module_param(mtrr, bool, S_IRUGO);
 250 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
 251 module_param(fixed, bool, S_IRUGO);
 252 MODULE_PARM_DESC(fixed, "Disable mode switching");
 253 module_param(noinit, bool, 0);
 254 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
 255 module_param(noregister, bool, 0);
 256 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
 257 module_param(probeonly, bool, 0);
 258 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
 259 module_param(idonly, bool, 0);
 260 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
 261 module_param(bailearly, bool, 0);
 262 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
 263 module_param(mode, charp, S_IRUGO);
 264 MODULE_PARM_DESC(mode,
 265                  "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
 266
 267 #ifndef MODULE
 268 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
 269 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name), NULL, 0)
 270 #define OPT_STRVAL(opt, name) (opt + strlen(name))
 271
 272 static __inline__ char *
 273 get_opt_string(const char *this_opt, const char *name)
 274 {
 275         const char *p;
 276         int i;
 277         char *ret;
 278
 279         p = OPT_STRVAL(this_opt, name);
 280         i = 0;
 281         while (p[i] && p[i] != ' ' && p[i] != ',')
 282                 i++;
 283         ret = kmalloc(i + 1, GFP_KERNEL);
 284         if (ret) {
 285                 strncpy(ret, p, i);
 286                 ret[i] = '\0';
 287         }
 288         return ret;
 289 }
 290
 291 static __inline__ int
 292 get_opt_int(const char *this_opt, const char *name, int *ret)
 293 {
 294         if (!ret)
 295                 return 0;
 296
 297         if (!OPT_EQUAL(this_opt, name))
 298                 return 0;
 299
 300         *ret = OPT_INTVAL(this_opt, name);
 301         return 1;
 302 }
 303
 304 static __inline__ int
 305 get_opt_bool(const char *this_opt, const char *name, int *ret)
 306 {
 307         if (!ret)
 308                 return 0;
 309
 310         if (OPT_EQUAL(this_opt, name)) {
 311                 if (this_opt[strlen(name)] == '=')
 312                         *ret = simple_strtoul(this_opt + strlen(name) + 1,
 313                                               NULL, 0);
 314                 else
 315                         *ret = 1;
 316         } else {
 317                 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
 318                         *ret = 0;
 319                 else
 320                         return 0;
 321         }
 322         return 1;
 323 }
 324
 325 static int __init
 326 intelfb_setup(char *options)
 327 {
 328         char *this_opt;
 329
 330         DBG_MSG("intelfb_setup\n");
 331
 332         if (!options || !*options) {
 333                 DBG_MSG("no options\n");
 334                 return 0;
 335         } else
 336                 DBG_MSG("options: %s\n", options);
 337
 338         /*
 339          * These are the built-in options analogous to the module parameters
 340          * defined above.
 341          *
 342          * The syntax is:
 343          *
 344          *    video=intelfb:[mode][,<param>=<val>] ...
 345          *
 346          * e.g.,
 347          *
 348          *    video=intelfb:1024x768-16@75,accel=0
 349          */
 350
 351         while ((this_opt = strsep(&options, ","))) {
 352                 if (!*this_opt)
 353                         continue;
 354                 if (get_opt_bool(this_opt, "accel", &accel))
 355                         ;
 356                 else if (get_opt_int(this_opt, "vram", &vram))
 357                         ;
 358                 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
 359                         ;
 360                 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
 361                         ;
 362                 else if (get_opt_bool(this_opt, "fixed", &fixed))
 363                         ;
 364                 else if (get_opt_bool(this_opt, "init", &noinit))
 365                         noinit = !noinit;
 366                 else if (OPT_EQUAL(this_opt, "mode="))
 367                         mode = get_opt_string(this_opt, "mode=");
 368                 else
 369                         mode = this_opt;
 370         }
 371
 372         return 0;
 373 }
 374
 375 #endif
 376
 377 static int __init
 378 intelfb_init(void)
 379 {
 380 #ifndef MODULE
 381         char *option = NULL;
 382 #endif
 383
 384         DBG_MSG("intelfb_init\n");
 385
 386         INF_MSG("Framebuffer driver for "
 387                 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
 388         INF_MSG("Version " INTELFB_VERSION "\n");
 389
 390         if (idonly)
 391                 return -ENODEV;
 392
 393 #ifndef MODULE
 394         if (fb_get_options("intelfb", &option))
 395                 return -ENODEV;
 396         intelfb_setup(option);
 397 #endif
 398
 399         return pci_register_driver(&intelfb_driver);
 400 }
 401
 402 static void __exit
 403 intelfb_exit(void)
 404 {
 405         DBG_MSG("intelfb_exit\n");
 406         pci_unregister_driver(&intelfb_driver);
 407 }
 408
 409 module_init(intelfb_init);
 410 module_exit(intelfb_exit);
 411
 412 /***************************************************************
 413  *                     mtrr support functions                  *
 414  ***************************************************************/
 415
 416 #ifdef CONFIG_MTRR
 417 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
 418 {
 419         dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
 420                                    dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
 421         if (dinfo->mtrr_reg < 0) {
 422                 ERR_MSG("unable to set MTRR\n");
 423                 return;
 424         }
 425         dinfo->has_mtrr = 1;
 426 }
 427 static inline void unset_mtrr(struct intelfb_info *dinfo)
 428 {
 429         if (dinfo->has_mtrr)
 430                 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
 431                          dinfo->aperture.size);
 432 }
 433 #else
 434 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
 435
 436 #define unset_mtrr(x) do { } while (0)
 437 #endif /* CONFIG_MTRR */
 438
 439 /***************************************************************
 440  *                        driver init / cleanup                *
 441  ***************************************************************/
 442
 443 static void
 444 cleanup(struct intelfb_info *dinfo)
 445 {
 446         DBG_MSG("cleanup\n");
 447
 448         if (!dinfo)
 449                 return;
 450
 451         fb_dealloc_cmap(&dinfo->info->cmap);
 452         kfree(dinfo->info->pixmap.addr);
 453
 454         if (dinfo->registered)
 455                 unregister_framebuffer(dinfo->info);
 456
 457         unset_mtrr(dinfo);
 458
 459         if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
 460                 agp_unbind_memory(dinfo->gtt_fb_mem);
 461                 agp_free_memory(dinfo->gtt_fb_mem);
 462         }
 463         if (dinfo->gtt_cursor_mem) {
 464                 agp_unbind_memory(dinfo->gtt_cursor_mem);
 465                 agp_free_memory(dinfo->gtt_cursor_mem);
 466         }
 467         if (dinfo->gtt_ring_mem) {
 468                 agp_unbind_memory(dinfo->gtt_ring_mem);
 469                 agp_free_memory(dinfo->gtt_ring_mem);
 470         }
 471
 472         if (dinfo->mmio_base)
 473                 iounmap((void __iomem *)dinfo->mmio_base);
 474         if (dinfo->aperture.virtual)
 475                 iounmap((void __iomem *)dinfo->aperture.virtual);
 476
 477         if (dinfo->mmio_base_phys)
 478                 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
 479         if (dinfo->aperture.physical)
 480                 release_mem_region(dinfo->aperture.physical,
 481                                    dinfo->aperture.size);
 482         framebuffer_release(dinfo->info);
 483 }
 484
 485 #define bailout(dinfo) do {                                             \
 486         DBG_MSG("bailout\n");                                           \
 487         cleanup(dinfo);                                                 \
 488         INF_MSG("Not going to register framebuffer, exiting...\n");     \
 489         return -ENODEV;                                                 \
 490 } while (0)
 491
 492
 493 static int __devinit
 494 intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
 495 {
 496         struct fb_info *info;
 497         struct intelfb_info *dinfo;
 498         int i, err, dvo;
 499         int aperture_size, stolen_size;
 500         struct agp_kern_info gtt_info;
 501         int agp_memtype;
 502         const char *s;
 503         struct agp_bridge_data *bridge;
 504         int aperture_bar = 0;
 505         int mmio_bar = 1;
 506         int offset;
 507
 508         DBG_MSG("intelfb_pci_register\n");
 509
 510         num_registered++;
 511         if (num_registered != 1) {
 512                 ERR_MSG("Attempted to register %d devices "
 513                         "(should be only 1).\n", num_registered);
 514                 return -ENODEV;
 515         }
 516
 517         info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
 518         if (!info) {
 519                 ERR_MSG("Could not allocate memory for intelfb_info.\n");
 520                 return -ENODEV;
 521         }
 522         if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
 523                 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
 524                 goto err_out_cmap;
 525                 return -ENODEV;
 526         }
 527
 528         dinfo = info->par;
 529         dinfo->info  = info;
 530         dinfo->fbops = &intel_fb_ops;
 531         dinfo->pdev  = pdev;
 532
 533         /* Reserve pixmap space. */
 534         info->pixmap.addr = kmalloc(64 * 1024, GFP_KERNEL);
 535         if (info->pixmap.addr == NULL) {
 536                 ERR_MSG("Cannot reserve pixmap memory.\n");
 537                 goto err_out_pixmap;
 538         }
 539         memset(info->pixmap.addr, 0, 64 * 1024);
 540
 541         /* set early this option because it could be changed by tv encoder
 542            driver */
 543         dinfo->fixed_mode = fixed;
 544
 545         /* Enable device. */
 546         if ((err = pci_enable_device(pdev))) {
 547                 ERR_MSG("Cannot enable device.\n");
 548                 cleanup(dinfo);
 549                 return -ENODEV;
 550         }
 551
 552         /* Set base addresses. */
 553         if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
 554                         (ent->device == PCI_DEVICE_ID_INTEL_915GM)) {
 555                 aperture_bar = 2;
 556                 mmio_bar = 0;
 557                 /* Disable HW cursor on 915G/M (not implemented yet) */
 558                 hwcursor = 0;
 559         }
 560         dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
 561         dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
 562         dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
 563         DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
 564                 (unsigned long long)pci_resource_start(pdev, aperture_bar),
 565                 (unsigned long long)pci_resource_len(pdev, aperture_bar),
 566                 (unsigned long long)pci_resource_start(pdev, mmio_bar),
 567                 (unsigned long long)pci_resource_len(pdev, mmio_bar));
 568
 569         /* Reserve the fb and MMIO regions */
 570         if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
 571                                 INTELFB_MODULE_NAME)) {
 572                 ERR_MSG("Cannot reserve FB region.\n");
 573                 cleanup(dinfo);
 574                 return -ENODEV;
 575         }
 576         if (!request_mem_region(dinfo->mmio_base_phys,
 577                                 INTEL_REG_SIZE,
 578                                 INTELFB_MODULE_NAME)) {
 579                 ERR_MSG("Cannot reserve MMIO region.\n");
 580                 cleanup(dinfo);
 581                 return -ENODEV;
 582         }
 583
 584         /* Get the chipset info. */
 585         dinfo->pci_chipset = pdev->device;
 586
 587         if (intelfbhw_get_chipset(pdev, &dinfo->name, &dinfo->chipset,
 588                                   &dinfo->mobile)) {
 589                 cleanup(dinfo);
 590                 return -ENODEV;
 591         }
 592
 593         if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
 594                 cleanup(dinfo);
 595                 return -ENODEV;
 596         }
 597
 598         INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
 599                 "stolen memory %dkB\n",
 600                 pdev->bus->number, PCI_SLOT(pdev->devfn),
 601                 PCI_FUNC(pdev->devfn), dinfo->name,
 602                 BtoMB(aperture_size), BtoKB(stolen_size));
 603
 604         /* Set these from the options. */
 605         dinfo->accel    = accel;
 606         dinfo->hwcursor = hwcursor;
 607
 608         if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
 609                 INF_MSG("Acceleration is not supported for the %s chipset.\n",
 610                         dinfo->name);
 611                 dinfo->accel = 0;
 612         }
 613
 614         /* Framebuffer parameters - Use all the stolen memory if >= vram */
 615         if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
 616                 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
 617                 dinfo->fbmem_gart = 0;
 618         } else {
 619                 dinfo->fb.size =  MB(vram);
 620                 dinfo->fbmem_gart = 1;
 621         }
 622
 623         /* Allocate space for the ring buffer and HW cursor if enabled. */
 624         if (dinfo->accel) {
 625                 dinfo->ring.size = RINGBUFFER_SIZE;
 626                 dinfo->ring_tail_mask = dinfo->ring.size - 1;
 627         }
 628         if (dinfo->hwcursor) {
 629                 dinfo->cursor.size = HW_CURSOR_SIZE;
 630         }
 631
 632         /* Use agpgart to manage the GATT */
 633         if (!(bridge = agp_backend_acquire(pdev))) {
 634                 ERR_MSG("cannot acquire agp\n");
 635                 cleanup(dinfo);
 636                 return -ENODEV;
 637         }
 638
 639         /* get the current gatt info */
 640         if (agp_copy_info(bridge, &gtt_info)) {
 641                 ERR_MSG("cannot get agp info\n");
 642                 agp_backend_release(bridge);
 643                 cleanup(dinfo);
 644                 return -ENODEV;
 645         }
 646
 647         if (MB(voffset) < stolen_size)
 648                 offset = (stolen_size >> 12);
 649         else
 650                 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
 651
 652         /* set the mem offsets - set them after the already used pages */
 653         if (dinfo->accel) {
 654                 dinfo->ring.offset = offset + gtt_info.current_memory;
 655         }
 656         if (dinfo->hwcursor) {
 657                 dinfo->cursor.offset = offset +
 658                         + gtt_info.current_memory + (dinfo->ring.size >> 12);
 659         }
 660         if (dinfo->fbmem_gart) {
 661                 dinfo->fb.offset = offset +
 662                         + gtt_info.current_memory + (dinfo->ring.size >> 12)
 663                         + (dinfo->cursor.size >> 12);
 664         }
 665
 666         /* Allocate memories (which aren't stolen) */
 667         /* Map the fb and MMIO regions */
 668         /* ioremap only up to the end of used aperture */
 669         dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
 670                 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
 671                  + dinfo->fb.size);
 672         if (!dinfo->aperture.virtual) {
 673                 ERR_MSG("Cannot remap FB region.\n");
 674                 cleanup(dinfo);
 675                 return -ENODEV;
 676         }
 677
 678         dinfo->mmio_base =
 679                 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
 680                                                INTEL_REG_SIZE);
 681         if (!dinfo->mmio_base) {
 682                 ERR_MSG("Cannot remap MMIO region.\n");
 683                 cleanup(dinfo);
 684                 return -ENODEV;
 685         }
 686
 687         if (dinfo->accel) {
 688                 if (!(dinfo->gtt_ring_mem =
 689                       agp_allocate_memory(bridge, dinfo->ring.size >> 12,
 690                                           AGP_NORMAL_MEMORY))) {
 691                         ERR_MSG("cannot allocate ring buffer memory\n");
 692                         agp_backend_release(bridge);
 693                         cleanup(dinfo);
 694                         return -ENOMEM;
 695                 }
 696                 if (agp_bind_memory(dinfo->gtt_ring_mem,
 697                                     dinfo->ring.offset)) {
 698                         ERR_MSG("cannot bind ring buffer memory\n");
 699                         agp_backend_release(bridge);
 700                         cleanup(dinfo);
 701                         return -EBUSY;
 702                 }
 703                 dinfo->ring.physical = dinfo->aperture.physical
 704                         + (dinfo->ring.offset << 12);
 705                 dinfo->ring.virtual  = dinfo->aperture.virtual
 706                         + (dinfo->ring.offset << 12);
 707                 dinfo->ring_head = dinfo->ring.virtual;
 708         }
 709         if (dinfo->hwcursor) {
 710                 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
 711                         : AGP_NORMAL_MEMORY;
 712                 if (!(dinfo->gtt_cursor_mem =
 713                       agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
 714                                           agp_memtype))) {
 715                         ERR_MSG("cannot allocate cursor memory\n");
 716                         agp_backend_release(bridge);
 717                         cleanup(dinfo);
 718                         return -ENOMEM;
 719                 }
 720                 if (agp_bind_memory(dinfo->gtt_cursor_mem,
 721                                     dinfo->cursor.offset)) {
 722                         ERR_MSG("cannot bind cursor memory\n");
 723                         agp_backend_release(bridge);
 724                         cleanup(dinfo);
 725                         return -EBUSY;
 726                 }
 727                 if (dinfo->mobile)
 728                         dinfo->cursor.physical
 729                                 = dinfo->gtt_cursor_mem->physical;
 730                 else
 731                         dinfo->cursor.physical = dinfo->aperture.physical
 732                                 + (dinfo->cursor.offset << 12);
 733                 dinfo->cursor.virtual = dinfo->aperture.virtual
 734                         + (dinfo->cursor.offset << 12);
 735         }
 736         if (dinfo->fbmem_gart) {
 737                 if (!(dinfo->gtt_fb_mem =
 738                       agp_allocate_memory(bridge, dinfo->fb.size >> 12,
 739                                           AGP_NORMAL_MEMORY))) {
 740                         WRN_MSG("cannot allocate framebuffer memory - use "
 741                                 "the stolen one\n");
 742                         dinfo->fbmem_gart = 0;
 743                 }
 744                 if (agp_bind_memory(dinfo->gtt_fb_mem,
 745                                     dinfo->fb.offset)) {
 746                         WRN_MSG("cannot bind framebuffer memory - use "
 747                                 "the stolen one\n");
 748                         dinfo->fbmem_gart = 0;
 749                 }
 750         }
 751
 752         /* update framebuffer memory parameters */
 753         if (!dinfo->fbmem_gart)
 754                 dinfo->fb.offset = 0;   /* starts at offset 0 */
 755         dinfo->fb.physical = dinfo->aperture.physical
 756                 + (dinfo->fb.offset << 12);
 757         dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
 758         dinfo->fb_start = dinfo->fb.offset << 12;
 759
 760         /* release agpgart */
 761         agp_backend_release(bridge);
 762
 763         if (mtrr)
 764                 set_mtrr(dinfo);
 765
 766         DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%x)\n",
 767                 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
 768                 (u32 __iomem ) dinfo->fb.virtual);
 769         DBG_MSG("MMIO: 0x%x/0x%x (0x%x)\n",
 770                 dinfo->mmio_base_phys, INTEL_REG_SIZE,
 771                 (u32 __iomem) dinfo->mmio_base);
 772         DBG_MSG("ring buffer: 0x%x/0x%x (0x%x)\n",
 773                 dinfo->ring.physical, dinfo->ring.size,
 774                 (u32 __iomem ) dinfo->ring.virtual);
 775         DBG_MSG("HW cursor: 0x%x/0x%x (0x%x) (offset 0x%x) (phys 0x%x)\n",
 776                 dinfo->cursor.physical, dinfo->cursor.size,
 777                 (u32 __iomem ) dinfo->cursor.virtual, dinfo->cursor.offset,
 778                 dinfo->cursor.physical);
 779
 780         DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
 781                 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
 782         DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
 783
 784         if (probeonly)
 785                 bailout(dinfo);
 786
 787         /*
 788          * Check if the LVDS port or any DVO ports are enabled.  If so,
 789          * don't allow mode switching
 790          */
 791         dvo = intelfbhw_check_non_crt(dinfo);
 792         if (dvo) {
 793                 dinfo->fixed_mode = 1;
 794                 WRN_MSG("Non-CRT device is enabled ( ");
 795                 i = 0;
 796                 while (dvo) {
 797                         if (dvo & 1) {
 798                                 s = intelfbhw_dvo_to_string(1 << i);
 799                                 if (s)
 800                                         printk("%s ", s);
 801                         }
 802                         dvo >>= 1;
 803                         ++i;
 804                 }
 805                 printk(").  Disabling mode switching.\n");
 806         }
 807
 808         if (bailearly == 1)
 809                 bailout(dinfo);
 810
 811         if (FIXED_MODE(dinfo) && ORIG_VIDEO_ISVGA != VIDEO_TYPE_VLFB) {
 812                 ERR_MSG("Video mode must be programmed at boot time.\n");
 813                 cleanup(dinfo);
 814                 return -ENODEV;
 815         }
 816
 817         if (bailearly == 2)
 818                 bailout(dinfo);
 819
 820         /* Initialise dinfo and related data. */
 821         /* If an initial mode was programmed at boot time, get its details. */
 822         if (ORIG_VIDEO_ISVGA == VIDEO_TYPE_VLFB)
 823                 get_initial_mode(dinfo);
 824
 825         if (bailearly == 3)
 826                 bailout(dinfo);
 827
 828         if (FIXED_MODE(dinfo)) {
 829                 /* remap fb address */
 830                 update_dinfo(dinfo, &dinfo->initial_var);
 831         }
 832
 833         if (bailearly == 4)
 834                 bailout(dinfo);
 835
 836
 837         if (intelfb_set_fbinfo(dinfo)) {
 838                 cleanup(dinfo);
 839                 return -ENODEV;
 840         }
 841
 842         if (bailearly == 5)
 843                 bailout(dinfo);
 844
 845         if (bailearly == 6)
 846                 bailout(dinfo);
 847
 848         pci_set_drvdata(pdev, dinfo);
 849
 850         /* Save the initial register state. */
 851         i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
 852                                     bailearly > 6 ? bailearly - 6 : 0);
 853         if (i != 0) {
 854                 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
 855                 bailout(dinfo);
 856         }
 857
 858         intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
 859
 860         if (bailearly == 18)
 861                 bailout(dinfo);
 862
 863         /* Cursor initialisation */
 864         if (dinfo->hwcursor) {
 865                 intelfbhw_cursor_init(dinfo);
 866                 intelfbhw_cursor_reset(dinfo);
 867         }
 868
 869         if (bailearly == 19)
 870                 bailout(dinfo);
 871
 872         /* 2d acceleration init */
 873         if (dinfo->accel)
 874                 intelfbhw_2d_start(dinfo);
 875
 876         if (bailearly == 20)
 877                 bailout(dinfo);
 878
 879         if (noregister)
 880                 bailout(dinfo);
 881
 882         if (register_framebuffer(dinfo->info) < 0) {
 883                 ERR_MSG("Cannot register framebuffer.\n");
 884                 cleanup(dinfo);
 885                 return -ENODEV;
 886         }
 887
 888         dinfo->registered = 1;
 889
 890         return 0;
 891
 892 err_out_pixmap:
 893         fb_dealloc_cmap(&info->cmap);
 894 err_out_cmap:
 895         framebuffer_release(info);
 896         return -ENODEV;
 897 }
 898
 899 static void __devexit
 900 intelfb_pci_unregister(struct pci_dev *pdev)
 901 {
 902         struct intelfb_info *dinfo = pci_get_drvdata(pdev);
 903
 904         DBG_MSG("intelfb_pci_unregister\n");
 905
 906         if (!dinfo)
 907                 return;
 908
 909         cleanup(dinfo);
 910
 911         pci_set_drvdata(pdev, NULL);
 912 }
 913
 914 /***************************************************************
 915  *                       helper functions                      *
 916  ***************************************************************/
 917
 918 int __inline__
 919 intelfb_var_to_depth(const struct fb_var_screeninfo *var)
 920 {
 921         DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
 922                 var->bits_per_pixel, var->green.length);
 923
 924         switch (var->bits_per_pixel) {
 925         case 16:
 926                 return (var->green.length == 6) ? 16 : 15;
 927         case 32:
 928                 return 24;
 929         default:
 930                 return var->bits_per_pixel;
 931         }
 932 }
 933
 934
 935 static __inline__ int
 936 var_to_refresh(const struct fb_var_screeninfo *var)
 937 {
 938         int xtot = var->xres + var->left_margin + var->right_margin +
 939                    var->hsync_len;
 940         int ytot = var->yres + var->upper_margin + var->lower_margin +
 941                    var->vsync_len;
 942
 943         return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
 944 }
 945
 946 /***************************************************************
 947  *                Various intialisation functions              *
 948  ***************************************************************/
 949
 950 static void __devinit
 951 get_initial_mode(struct intelfb_info *dinfo)
 952 {
 953         struct fb_var_screeninfo *var;
 954         int xtot, ytot;
 955
 956         DBG_MSG("get_initial_mode\n");
 957
 958         dinfo->initial_vga = 1;
 959         dinfo->initial_fb_base = screen_info.lfb_base;
 960         dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
 961         dinfo->initial_pitch = screen_info.lfb_linelength;
 962
 963         var = &dinfo->initial_var;
 964         memset(var, 0, sizeof(*var));
 965         var->xres = screen_info.lfb_width;
 966         var->yres = screen_info.lfb_height;
 967         var->bits_per_pixel = screen_info.lfb_depth;
 968         switch (screen_info.lfb_depth) {
 969         case 15:
 970                 var->bits_per_pixel = 16;
 971                 break;
 972         case 24:
 973                 var->bits_per_pixel = 32;
 974                 break;
 975         }
 976
 977         DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
 978                 dinfo->initial_fb_base, dinfo->initial_video_ram,
 979                 BtoKB(dinfo->initial_video_ram));
 980
 981         DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
 982                 var->xres, var->yres, var->bits_per_pixel,
 983                 dinfo->initial_pitch);
 984
 985         /* Dummy timing values (assume 60Hz) */
 986         var->left_margin = (var->xres / 8) & 0xf8;
 987         var->right_margin = 32;
 988         var->upper_margin = 16;
 989         var->lower_margin = 4;
 990         var->hsync_len = (var->xres / 8) & 0xf8;
 991         var->vsync_len = 4;
 992
 993         xtot = var->xres + var->left_margin +
 994                 var->right_margin + var->hsync_len;
 995         ytot = var->yres + var->upper_margin +
 996                 var->lower_margin + var->vsync_len;
 997         var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
 998
 999         var->height = -1;
1000         var->width = -1;
1001
1002         if (var->bits_per_pixel > 8) {
1003                 var->red.offset = screen_info.red_pos;
1004                 var->red.length = screen_info.red_size;
1005                 var->green.offset = screen_info.green_pos;
1006                 var->green.length = screen_info.green_size;
1007                 var->blue.offset = screen_info.blue_pos;
1008                 var->blue.length = screen_info.blue_size;
1009                 var->transp.offset = screen_info.rsvd_pos;
1010                 var->transp.length = screen_info.rsvd_size;
1011         } else {
1012                 var->red.length = 8;
1013                 var->green.length = 8;
1014                 var->blue.length = 8;
1015         }
1016 }
1017
1018 static int __devinit
1019 intelfb_init_var(struct intelfb_info *dinfo)
1020 {
1021         struct fb_var_screeninfo *var;
1022         int msrc = 0;
1023
1024         DBG_MSG("intelfb_init_var\n");
1025
1026         var = &dinfo->info->var;
1027         if (FIXED_MODE(dinfo)) {
1028                 memcpy(var, &dinfo->initial_var,
1029                        sizeof(struct fb_var_screeninfo));
1030                 msrc = 5;
1031         } else {
1032                 if (mode) {
1033                         msrc = fb_find_mode(var, dinfo->info, mode,
1034                                             vesa_modes, VESA_MODEDB_SIZE,
1035                                             NULL, 0);
1036                         if (msrc)
1037                                 msrc |= 8;
1038                 }
1039                 if (!msrc) {
1040                         msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1041                                             vesa_modes, VESA_MODEDB_SIZE,
1042                                             NULL, 0);
1043                 }
1044         }
1045
1046         if (!msrc) {
1047                 ERR_MSG("Cannot find a suitable video mode.\n");
1048                 return 1;
1049         }
1050
1051         INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1052                 var->bits_per_pixel, var_to_refresh(var));
1053
1054         DBG_MSG("Initial video mode is from %d.\n", msrc);
1055
1056 #if ALLOCATE_FOR_PANNING
1057         /* Allow use of half of the video ram for panning */
1058         var->xres_virtual = var->xres;
1059         var->yres_virtual =
1060                 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1061         if (var->yres_virtual < var->yres)
1062                 var->yres_virtual = var->yres;
1063 #else
1064         var->yres_virtual = var->yres;
1065 #endif
1066
1067         if (dinfo->accel)
1068                 var->accel_flags |= FB_ACCELF_TEXT;
1069         else
1070                 var->accel_flags &= ~FB_ACCELF_TEXT;
1071
1072         return 0;
1073 }
1074
1075 static int __devinit
1076 intelfb_set_fbinfo(struct intelfb_info *dinfo)
1077 {
1078         struct fb_info *info = dinfo->info;
1079
1080         DBG_MSG("intelfb_set_fbinfo\n");
1081
1082         info->flags = FBINFO_FLAG_DEFAULT;
1083         info->fbops = &intel_fb_ops;
1084         info->pseudo_palette = dinfo->pseudo_palette;
1085
1086         info->pixmap.size = 64*1024;
1087         info->pixmap.buf_align = 8;
1088         info->pixmap.access_align = 32;
1089         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1090
1091         if (intelfb_init_var(dinfo))
1092                 return 1;
1093
1094         info->pixmap.scan_align = 1;
1095
1096         update_dinfo(dinfo, &info->var);
1097
1098         return 0;
1099 }
1100
1101 /* Update dinfo to match the active video mode. */
1102 static void
1103 update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var)
1104 {
1105         DBG_MSG("update_dinfo\n");
1106
1107         dinfo->bpp = var->bits_per_pixel;
1108         dinfo->depth = intelfb_var_to_depth(var);
1109         dinfo->xres = var->xres;
1110         dinfo->yres = var->xres;
1111         dinfo->pixclock = var->pixclock;
1112
1113         intelfb_get_fix(&dinfo->info->fix, dinfo->info);
1114
1115         switch (dinfo->bpp) {
1116         case 8:
1117                 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1118                 dinfo->pitch = var->xres_virtual;
1119                 break;
1120         case 16:
1121                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1122                 dinfo->pitch = var->xres_virtual * 2;
1123                 break;
1124         case 32:
1125                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1126                 dinfo->pitch = var->xres_virtual * 4;
1127                 break;
1128         }
1129
1130         /* Make sure the line length is a aligned correctly. */
1131         dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1132
1133         if (FIXED_MODE(dinfo))
1134                 dinfo->pitch = dinfo->initial_pitch;
1135
1136         dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1137         dinfo->info->fix.line_length = dinfo->pitch;
1138         dinfo->info->fix.visual = dinfo->visual;
1139 }
1140
1141 /* fbops functions */
1142
1143 static int
1144 intelfb_get_fix(struct fb_fix_screeninfo *fix, struct fb_info *info)
1145 {
1146         struct intelfb_info *dinfo = GET_DINFO(info);
1147
1148         DBG_MSG("intelfb_get_fix\n");
1149
1150         memset(fix, 0, sizeof(*fix));
1151         strcpy(fix->id, dinfo->name);
1152         fix->smem_start = dinfo->fb.physical;
1153         fix->smem_len = dinfo->fb.size;
1154         fix->type = FB_TYPE_PACKED_PIXELS;
1155         fix->type_aux = 0;
1156         fix->visual = dinfo->visual;
1157         fix->xpanstep = 8;
1158         fix->ypanstep = 1;
1159         fix->ywrapstep = 0;
1160         fix->line_length = dinfo->pitch;
1161         fix->mmio_start = dinfo->mmio_base_phys;
1162         fix->mmio_len = INTEL_REG_SIZE;
1163         fix->accel = FB_ACCEL_I830;
1164         return 0;
1165 }
1166
1167 /***************************************************************
1168  *                       fbdev interface                       *
1169  ***************************************************************/
1170
1171 static int
1172 intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1173 {
1174         int change_var = 0;
1175         struct fb_var_screeninfo v;
1176         struct intelfb_info *dinfo;
1177         static int first = 1;
1178
1179         DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1180
1181         dinfo = GET_DINFO(info);
1182
1183         if (intelfbhw_validate_mode(dinfo, var) != 0)
1184                 return -EINVAL;
1185
1186         v = *var;
1187
1188         /* Check for a supported bpp. */
1189         if (v.bits_per_pixel <= 8) {
1190                 v.bits_per_pixel = 8;
1191         } else if (v.bits_per_pixel <= 16) {
1192                 if (v.bits_per_pixel == 16)
1193                         v.green.length = 6;
1194                 v.bits_per_pixel = 16;
1195         } else if (v.bits_per_pixel <= 32) {
1196                 v.bits_per_pixel = 32;
1197         } else
1198                 return -EINVAL;
1199
1200         change_var = ((info->var.xres != var->xres) ||
1201                       (info->var.yres != var->yres) ||
1202                       (info->var.xres_virtual != var->xres_virtual) ||
1203                       (info->var.yres_virtual != var->yres_virtual) ||
1204                       (info->var.bits_per_pixel != var->bits_per_pixel) ||
1205                       memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1206                       memcmp(&info->var.green, &var->green,
1207                              sizeof(var->green)) ||
1208                       memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1209
1210         if (FIXED_MODE(dinfo) &&
1211             (change_var ||
1212              var->yres_virtual > dinfo->initial_var.yres_virtual ||
1213              var->yres_virtual < dinfo->initial_var.yres ||
1214              var->xoffset || var->nonstd)) {
1215                 if (first) {
1216                         ERR_MSG("Changing the video mode is not supported.\n");
1217                         first = 0;
1218                 }
1219                 return -EINVAL;
1220         }
1221
1222         switch (intelfb_var_to_depth(&v)) {
1223         case 8:
1224                 v.red.offset = v.green.offset = v.blue.offset = 0;
1225                 v.red.length = v.green.length = v.blue.length = 8;
1226                 v.transp.offset = v.transp.length = 0;
1227                 break;
1228         case 15:
1229                 v.red.offset = 10;
1230                 v.green.offset = 5;
1231                 v.blue.offset = 0;
1232                 v.red.length = v.green.length = v.blue.length = 5;
1233                 v.transp.offset = v.transp.length = 0;
1234                 break;
1235         case 16:
1236                 v.red.offset = 11;
1237                 v.green.offset = 5;
1238                 v.blue.offset = 0;
1239                 v.red.length = 5;
1240                 v.green.length = 6;
1241                 v.blue.length = 5;
1242                 v.transp.offset = v.transp.length = 0;
1243                 break;
1244         case 24:
1245                 v.red.offset = 16;
1246                 v.green.offset = 8;
1247                 v.blue.offset = 0;
1248                 v.red.length = v.green.length = v.blue.length = 8;
1249                 v.transp.offset = v.transp.length = 0;
1250                 break;
1251         case 32:
1252                 v.red.offset = 16;
1253                 v.green.offset = 8;
1254                 v.blue.offset = 0;
1255                 v.red.length = v.green.length = v.blue.length = 8;
1256                 v.transp.offset = 24;
1257                 v.transp.length = 8;
1258                 break;
1259         }
1260
1261         if (v.xoffset < 0)
1262                 v.xoffset = 0;
1263         if (v.yoffset < 0)
1264                 v.yoffset = 0;
1265
1266         if (v.xoffset > v.xres_virtual - v.xres)
1267                 v.xoffset = v.xres_virtual - v.xres;
1268         if (v.yoffset > v.yres_virtual - v.yres)
1269                 v.yoffset = v.yres_virtual - v.yres;
1270
1271         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1272                           v.transp.msb_right = 0;
1273
1274         *var = v;
1275
1276         return 0;
1277 }
1278
1279 static int
1280 intelfb_set_par(struct fb_info *info)
1281 {
1282         struct intelfb_hwstate *hw;
1283         struct intelfb_info *dinfo = GET_DINFO(info);
1284
1285         if (FIXED_MODE(dinfo)) {
1286                 ERR_MSG("Changing the video mode is not supported.\n");
1287                 return -EINVAL;
1288         }
1289
1290         hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1291         if (!hw)
1292                 return -ENOMEM;
1293
1294         DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1295                 info->var.yres, info->var.bits_per_pixel);
1296
1297         intelfb_blank(FB_BLANK_POWERDOWN, info);
1298
1299         if (ACCEL(dinfo, info))
1300                 intelfbhw_2d_stop(dinfo);
1301
1302         memcpy(hw, &dinfo->save_state, sizeof(*hw));
1303         if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1304                 goto invalid_mode;
1305         if (intelfbhw_program_mode(dinfo, hw, 0))
1306                 goto invalid_mode;
1307
1308 #if REGDUMP > 0
1309         intelfbhw_read_hw_state(dinfo, hw, 0);
1310         intelfbhw_print_hw_state(dinfo, hw);
1311 #endif
1312
1313         update_dinfo(dinfo, &info->var);
1314
1315         if (ACCEL(dinfo, info))
1316                 intelfbhw_2d_start(dinfo);
1317
1318         intelfb_pan_display(&info->var, info);
1319
1320         intelfb_blank(FB_BLANK_UNBLANK, info);
1321
1322         if (ACCEL(dinfo, info)) {
1323                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1324                 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1325                 FBINFO_HWACCEL_IMAGEBLIT;
1326         } else {
1327                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1328         }
1329         kfree(hw);
1330         return 0;
1331 invalid_mode:
1332         kfree(hw);
1333         return -EINVAL;
1334 }
1335
1336 static int
1337 intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1338                   unsigned blue, unsigned transp, struct fb_info *info)
1339 {
1340         struct intelfb_info *dinfo = GET_DINFO(info);
1341
1342 #if VERBOSE > 0
1343         DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1344 #endif
1345
1346         if (regno > 255)
1347                 return 1;
1348
1349         switch (dinfo->depth) {
1350         case 8:
1351                 {
1352                         red >>= 8;
1353                         green >>= 8;
1354                         blue >>= 8;
1355
1356                         intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1357                                             transp);
1358                 }
1359                 break;
1360         case 15:
1361                 dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1362                                                ((green & 0xf800) >>  6) |
1363                                                ((blue & 0xf800) >> 11);
1364                 break;
1365         case 16:
1366                 dinfo->pseudo_palette[regno] = (red & 0xf800) |
1367                                                ((green & 0xfc00) >>  5) |
1368                                                ((blue  & 0xf800) >> 11);
1369                 break;
1370         case 24:
1371                 dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1372                                                (green & 0xff00) |
1373                                                ((blue  & 0xff00) >> 8);
1374                 break;
1375         }
1376         return 0;
1377 }
1378
1379 static int
1380 intelfb_blank(int blank, struct fb_info *info)
1381 {
1382         intelfbhw_do_blank(blank, info);
1383         return 0;
1384 }
1385
1386 static int
1387 intelfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1388 {
1389         intelfbhw_pan_display(var, info);
1390         return 0;
1391 }
1392
1393 /* When/if we have our own ioctls. */
1394 static int
1395 intelfb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
1396               unsigned long arg, struct fb_info *info)
1397 {
1398         int retval = 0;
1399
1400         return retval;
1401 }
1402
1403 static void
1404 intelfb_fillrect (struct fb_info *info, const struct fb_fillrect *rect)
1405 {
1406         struct intelfb_info *dinfo = GET_DINFO(info);
1407         u32 rop, color;
1408
1409 #if VERBOSE > 0
1410         DBG_MSG("intelfb_fillrect\n");
1411 #endif
1412
1413         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1414                 return cfb_fillrect(info, rect);
1415
1416         if (rect->rop == ROP_COPY)
1417                 rop = PAT_ROP_GXCOPY;
1418         else // ROP_XOR
1419                 rop = PAT_ROP_GXXOR;
1420
1421         if (dinfo->depth != 8)
1422                 color = dinfo->pseudo_palette[rect->color];
1423         else
1424                 color = rect->color;
1425
1426         intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1427                               rect->width, rect->height, color,
1428                               dinfo->pitch, info->var.bits_per_pixel,
1429                               rop);
1430 }
1431
1432 static void
1433 intelfb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
1434 {
1435         struct intelfb_info *dinfo = GET_DINFO(info);
1436
1437 #if VERBOSE > 0
1438         DBG_MSG("intelfb_copyarea\n");
1439 #endif
1440
1441         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1442                 return cfb_copyarea(info, region);
1443
1444         intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1445                             region->dy, region->width, region->height,
1446                             dinfo->pitch, info->var.bits_per_pixel);
1447 }
1448
1449 static void
1450 intelfb_imageblit(struct fb_info *info, const struct fb_image *image)
1451 {
1452         struct intelfb_info *dinfo = GET_DINFO(info);
1453         u32 fgcolor, bgcolor;
1454
1455 #if VERBOSE > 0
1456         DBG_MSG("intelfb_imageblit\n");
1457 #endif
1458
1459         if (!ACCEL(dinfo, info) || dinfo->depth == 4
1460             || image->depth != 1)
1461                 return cfb_imageblit(info, image);
1462
1463         if (dinfo->depth != 8) {
1464                 fgcolor = dinfo->pseudo_palette[image->fg_color];
1465                 bgcolor = dinfo->pseudo_palette[image->bg_color];
1466         } else {
1467                 fgcolor = image->fg_color;
1468                 bgcolor = image->bg_color;
1469         }
1470
1471         if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1472                                     image->height, image->data,
1473                                     image->dx, image->dy,
1474                                     dinfo->pitch, info->var.bits_per_pixel))
1475                 return cfb_imageblit(info, image);
1476 }
1477
1478 static int
1479 intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1480 {
1481         struct intelfb_info *dinfo = GET_DINFO(info);
1482
1483 #if VERBOSE > 0
1484         DBG_MSG("intelfb_cursor\n");
1485 #endif
1486
1487         if (!dinfo->hwcursor)
1488                 return -ENODEV;
1489
1490         intelfbhw_cursor_hide(dinfo);
1491
1492         /* If XFree killed the cursor - restore it */
1493         if (INREG(CURSOR_A_BASEADDR) != dinfo->cursor.offset << 12) {
1494                 u32 fg, bg;
1495
1496                 DBG_MSG("the cursor was killed - restore it !!\n");
1497                 DBG_MSG("size %d, %d   pos %d, %d\n",
1498                         cursor->image.width, cursor->image.height,
1499                         cursor->image.dx, cursor->image.dy);
1500
1501                 intelfbhw_cursor_init(dinfo);
1502                 intelfbhw_cursor_reset(dinfo);
1503                 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1504                                         cursor->image.dy);
1505
1506                 if (dinfo->depth != 8) {
1507                         fg =dinfo->pseudo_palette[cursor->image.fg_color];
1508                         bg =dinfo->pseudo_palette[cursor->image.bg_color];
1509                 } else {
1510                         fg = cursor->image.fg_color;
1511                         bg = cursor->image.bg_color;
1512                 }
1513                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1514                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1515                                       cursor->image.height,
1516                                       dinfo->cursor_src);
1517
1518                 if (cursor->enable)
1519                         intelfbhw_cursor_show(dinfo);
1520                 return 0;
1521         }
1522
1523         if (cursor->set & FB_CUR_SETPOS) {
1524                 u32 dx, dy;
1525
1526                 dx = cursor->image.dx - info->var.xoffset;
1527                 dy = cursor->image.dy - info->var.yoffset;
1528
1529                 intelfbhw_cursor_setpos(dinfo, dx, dy);
1530         }
1531
1532         if (cursor->set & FB_CUR_SETSIZE) {
1533                 if (cursor->image.width > 64 || cursor->image.height > 64)
1534                         return -ENXIO;
1535
1536                 intelfbhw_cursor_reset(dinfo);
1537         }
1538
1539         if (cursor->set & FB_CUR_SETCMAP) {
1540                 u32 fg, bg;
1541
1542                 if (dinfo->depth != 8) {
1543                         fg = dinfo->pseudo_palette[cursor->image.fg_color];
1544                         bg = dinfo->pseudo_palette[cursor->image.bg_color];
1545                 } else {
1546                         fg = cursor->image.fg_color;
1547                         bg = cursor->image.bg_color;
1548                 }
1549
1550                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1551         }
1552
1553         if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1554                 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1555                 u32 size = s_pitch * cursor->image.height;
1556                 u8 *dat = (u8 *) cursor->image.data;
1557                 u8 *msk = (u8 *) cursor->mask;
1558                 u8 src[64];
1559                 u32 i;
1560
1561                 if (cursor->image.depth != 1)
1562                         return -ENXIO;
1563
1564                 switch (cursor->rop) {
1565                 case ROP_XOR:
1566                         for (i = 0; i < size; i++)
1567                                 src[i] = dat[i] ^ msk[i];
1568                         break;
1569                 case ROP_COPY:
1570                 default:
1571                         for (i = 0; i < size; i++)
1572                                 src[i] = dat[i] & msk[i];
1573                         break;
1574                 }
1575
1576                 /* save the bitmap to restore it when XFree will
1577                    make the cursor dirty */
1578                 memcpy(dinfo->cursor_src, src, size);
1579
1580                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1581                                       cursor->image.height, src);
1582         }
1583
1584         if (cursor->enable)
1585                 intelfbhw_cursor_show(dinfo);
1586
1587         return 0;
1588 }
1589
1590 static int
1591 intelfb_sync(struct fb_info *info)
1592 {
1593         struct intelfb_info *dinfo = GET_DINFO(info);
1594
1595 #if VERBOSE > 0
1596         DBG_MSG("intelfb_sync\n");
1597 #endif
1598
1599         if (dinfo->ring_lockup)
1600                 return 0;
1601
1602         intelfbhw_do_sync(dinfo);
1603         return 0;
1604 }
1605