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  * 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
 126 #include <asm/io.h>
 127
 128 #ifdef CONFIG_MTRR
 129 #include <asm/mtrr.h>
 130 #endif
 131
 132 #include "intelfb.h"
 133 #include "intelfbhw.h"
 134
 135 static void __devinit get_initial_mode(struct intelfb_info *dinfo);
 136 static void update_dinfo(struct intelfb_info *dinfo,
 137                          struct fb_var_screeninfo *var);
 138 static int intelfb_check_var(struct fb_var_screeninfo *var,
 139                              struct fb_info *info);
 140 static int intelfb_set_par(struct fb_info *info);
 141 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 142                              unsigned blue, unsigned transp,
 143                              struct fb_info *info);
 144
 145 static int intelfb_blank(int blank, struct fb_info *info);
 146 static int intelfb_pan_display(struct fb_var_screeninfo *var,
 147                                struct fb_info *info);
 148
 149 static void intelfb_fillrect(struct fb_info *info,
 150                              const struct fb_fillrect *rect);
 151 static void intelfb_copyarea(struct fb_info *info,
 152                              const struct fb_copyarea *region);
 153 static void intelfb_imageblit(struct fb_info *info,
 154                               const struct fb_image *image);
 155 static int intelfb_cursor(struct fb_info *info,
 156                            struct fb_cursor *cursor);
 157
 158 static int intelfb_sync(struct fb_info *info);
 159
 160 static int intelfb_ioctl(struct fb_info *info,
 161                          unsigned int cmd, unsigned long arg);
 162
 163 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
 164                                           const struct pci_device_id *ent);
 165 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
 166 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
 167
 168 /*
 169  * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
 170  * mobile chipsets from being registered.
 171  */
 172 #if DETECT_VGA_CLASS_ONLY
 173 #define INTELFB_CLASS_MASK ~0 << 8
 174 #else
 175 #define INTELFB_CLASS_MASK 0
 176 #endif
 177
 178 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
 179         { 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 },
 180         { 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 },
 181         { 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 },
 182         { 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 },
 183         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915G },
 184         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915GM },
 185         { 0, }
 186 };
 187
 188 /* Global data */
 189 static int num_registered = 0;
 190
 191 /* fb ops */
 192 static struct fb_ops intel_fb_ops = {
 193         .owner =                THIS_MODULE,
 194         .fb_check_var =         intelfb_check_var,
 195         .fb_set_par =           intelfb_set_par,
 196         .fb_setcolreg =         intelfb_setcolreg,
 197         .fb_blank =             intelfb_blank,
 198         .fb_pan_display =       intelfb_pan_display,
 199         .fb_fillrect  =         intelfb_fillrect,
 200         .fb_copyarea  =         intelfb_copyarea,
 201         .fb_imageblit =         intelfb_imageblit,
 202         .fb_cursor =            intelfb_cursor,
 203         .fb_sync =              intelfb_sync,
 204         .fb_ioctl =             intelfb_ioctl
 205 };
 206
 207 /* PCI driver module table */
 208 static struct pci_driver intelfb_driver = {
 209         .name =         "intelfb",
 210         .id_table =     intelfb_pci_table,
 211         .probe =        intelfb_pci_register,
 212         .remove =       __devexit_p(intelfb_pci_unregister)
 213 };
 214
 215 /* Module description/parameters */
 216 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
 217               "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
 218 MODULE_DESCRIPTION(
 219         "Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS " chipsets");
 220 MODULE_LICENSE("Dual BSD/GPL");
 221 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
 222
 223 static int accel        = 1;
 224 static int vram         = 4;
 225 static int hwcursor     = 0;
 226 static int mtrr         = 1;
 227 static int fixed        = 0;
 228 static int noinit       = 0;
 229 static int noregister   = 0;
 230 static int probeonly    = 0;
 231 static int idonly       = 0;
 232 static int bailearly    = 0;
 233 static int voffset      = 48;
 234 static char *mode       = NULL;
 235
 236 module_param(accel, bool, S_IRUGO);
 237 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
 238 module_param(vram, int, S_IRUGO);
 239 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
 240 module_param(voffset, int, S_IRUGO);
 241 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
 242 module_param(hwcursor, bool, S_IRUGO);
 243 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
 244 module_param(mtrr, bool, S_IRUGO);
 245 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
 246 module_param(fixed, bool, S_IRUGO);
 247 MODULE_PARM_DESC(fixed, "Disable mode switching");
 248 module_param(noinit, bool, 0);
 249 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
 250 module_param(noregister, bool, 0);
 251 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
 252 module_param(probeonly, bool, 0);
 253 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
 254 module_param(idonly, bool, 0);
 255 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
 256 module_param(bailearly, bool, 0);
 257 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
 258 module_param(mode, charp, S_IRUGO);
 259 MODULE_PARM_DESC(mode,
 260                  "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
 261
 262 #ifndef MODULE
 263 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
 264 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name), NULL, 0)
 265 #define OPT_STRVAL(opt, name) (opt + strlen(name))
 266
 267 static __inline__ char *
 268 get_opt_string(const char *this_opt, const char *name)
 269 {
 270         const char *p;
 271         int i;
 272         char *ret;
 273
 274         p = OPT_STRVAL(this_opt, name);
 275         i = 0;
 276         while (p[i] && p[i] != ' ' && p[i] != ',')
 277                 i++;
 278         ret = kmalloc(i + 1, GFP_KERNEL);
 279         if (ret) {
 280                 strncpy(ret, p, i);
 281                 ret[i] = '\0';
 282         }
 283         return ret;
 284 }
 285
 286 static __inline__ int
 287 get_opt_int(const char *this_opt, const char *name, int *ret)
 288 {
 289         if (!ret)
 290                 return 0;
 291
 292         if (!OPT_EQUAL(this_opt, name))
 293                 return 0;
 294
 295         *ret = OPT_INTVAL(this_opt, name);
 296         return 1;
 297 }
 298
 299 static __inline__ int
 300 get_opt_bool(const char *this_opt, const char *name, int *ret)
 301 {
 302         if (!ret)
 303                 return 0;
 304
 305         if (OPT_EQUAL(this_opt, name)) {
 306                 if (this_opt[strlen(name)] == '=')
 307                         *ret = simple_strtoul(this_opt + strlen(name) + 1,
 308                                               NULL, 0);
 309                 else
 310                         *ret = 1;
 311         } else {
 312                 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
 313                         *ret = 0;
 314                 else
 315                         return 0;
 316         }
 317         return 1;
 318 }
 319
 320 static int __init
 321 intelfb_setup(char *options)
 322 {
 323         char *this_opt;
 324
 325         DBG_MSG("intelfb_setup\n");
 326
 327         if (!options || !*options) {
 328                 DBG_MSG("no options\n");
 329                 return 0;
 330         } else
 331                 DBG_MSG("options: %s\n", options);
 332
 333         /*
 334          * These are the built-in options analogous to the module parameters
 335          * defined above.
 336          *
 337          * The syntax is:
 338          *
 339          *    video=intelfb:[mode][,<param>=<val>] ...
 340          *
 341          * e.g.,
 342          *
 343          *    video=intelfb:1024x768-16@75,accel=0
 344          */
 345
 346         while ((this_opt = strsep(&options, ","))) {
 347                 if (!*this_opt)
 348                         continue;
 349                 if (get_opt_bool(this_opt, "accel", &accel))
 350                         ;
 351                 else if (get_opt_int(this_opt, "vram", &vram))
 352                         ;
 353                 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
 354                         ;
 355                 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
 356                         ;
 357                 else if (get_opt_bool(this_opt, "fixed", &fixed))
 358                         ;
 359                 else if (get_opt_bool(this_opt, "init", &noinit))
 360                         noinit = !noinit;
 361                 else if (OPT_EQUAL(this_opt, "mode="))
 362                         mode = get_opt_string(this_opt, "mode=");
 363                 else
 364                         mode = this_opt;
 365         }
 366
 367         return 0;
 368 }
 369
 370 #endif
 371
 372 static int __init
 373 intelfb_init(void)
 374 {
 375 #ifndef MODULE
 376         char *option = NULL;
 377 #endif
 378
 379         DBG_MSG("intelfb_init\n");
 380
 381         INF_MSG("Framebuffer driver for "
 382                 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
 383         INF_MSG("Version " INTELFB_VERSION "\n");
 384
 385         if (idonly)
 386                 return -ENODEV;
 387
 388 #ifndef MODULE
 389         if (fb_get_options("intelfb", &option))
 390                 return -ENODEV;
 391         intelfb_setup(option);
 392 #endif
 393
 394         return pci_register_driver(&intelfb_driver);
 395 }
 396
 397 static void __exit
 398 intelfb_exit(void)
 399 {
 400         DBG_MSG("intelfb_exit\n");
 401         pci_unregister_driver(&intelfb_driver);
 402 }
 403
 404 module_init(intelfb_init);
 405 module_exit(intelfb_exit);
 406
 407 /***************************************************************
 408  *                     mtrr support functions                  *
 409  ***************************************************************/
 410
 411 #ifdef CONFIG_MTRR
 412 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
 413 {
 414         dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
 415                                    dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
 416         if (dinfo->mtrr_reg < 0) {
 417                 ERR_MSG("unable to set MTRR\n");
 418                 return;
 419         }
 420         dinfo->has_mtrr = 1;
 421 }
 422 static inline void unset_mtrr(struct intelfb_info *dinfo)
 423 {
 424         if (dinfo->has_mtrr)
 425                 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
 426                          dinfo->aperture.size);
 427 }
 428 #else
 429 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
 430
 431 #define unset_mtrr(x) do { } while (0)
 432 #endif /* CONFIG_MTRR */
 433
 434 /***************************************************************
 435  *                        driver init / cleanup                *
 436  ***************************************************************/
 437
 438 static void
 439 cleanup(struct intelfb_info *dinfo)
 440 {
 441         DBG_MSG("cleanup\n");
 442
 443         if (!dinfo)
 444                 return;
 445
 446         fb_dealloc_cmap(&dinfo->info->cmap);
 447         kfree(dinfo->info->pixmap.addr);
 448
 449         if (dinfo->registered)
 450                 unregister_framebuffer(dinfo->info);
 451
 452         unset_mtrr(dinfo);
 453
 454         if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
 455                 agp_unbind_memory(dinfo->gtt_fb_mem);
 456                 agp_free_memory(dinfo->gtt_fb_mem);
 457         }
 458         if (dinfo->gtt_cursor_mem) {
 459                 agp_unbind_memory(dinfo->gtt_cursor_mem);
 460                 agp_free_memory(dinfo->gtt_cursor_mem);
 461         }
 462         if (dinfo->gtt_ring_mem) {
 463                 agp_unbind_memory(dinfo->gtt_ring_mem);
 464                 agp_free_memory(dinfo->gtt_ring_mem);
 465         }
 466
 467         if (dinfo->mmio_base)
 468                 iounmap((void __iomem *)dinfo->mmio_base);
 469         if (dinfo->aperture.virtual)
 470                 iounmap((void __iomem *)dinfo->aperture.virtual);
 471
 472         if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
 473                 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
 474         if (dinfo->flag & INTELFB_FB_ACQUIRED)
 475                 release_mem_region(dinfo->aperture.physical,
 476                                    dinfo->aperture.size);
 477         framebuffer_release(dinfo->info);
 478 }
 479
 480 #define bailout(dinfo) do {                                             \
 481         DBG_MSG("bailout\n");                                           \
 482         cleanup(dinfo);                                                 \
 483         INF_MSG("Not going to register framebuffer, exiting...\n");     \
 484         return -ENODEV;                                                 \
 485 } while (0)
 486
 487
 488 static int __devinit
 489 intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
 490 {
 491         struct fb_info *info;
 492         struct intelfb_info *dinfo;
 493         int i, err, dvo;
 494         int aperture_size, stolen_size;
 495         struct agp_kern_info gtt_info;
 496         int agp_memtype;
 497         const char *s;
 498         struct agp_bridge_data *bridge;
 499         int aperture_bar = 0;
 500         int mmio_bar = 1;
 501         int offset;
 502
 503         DBG_MSG("intelfb_pci_register\n");
 504
 505         num_registered++;
 506         if (num_registered != 1) {
 507                 ERR_MSG("Attempted to register %d devices "
 508                         "(should be only 1).\n", num_registered);
 509                 return -ENODEV;
 510         }
 511
 512         info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
 513         if (!info) {
 514                 ERR_MSG("Could not allocate memory for intelfb_info.\n");
 515                 return -ENODEV;
 516         }
 517         if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
 518                 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
 519                 goto err_out_cmap;
 520                 return -ENODEV;
 521         }
 522
 523         dinfo = info->par;
 524         dinfo->info  = info;
 525         dinfo->fbops = &intel_fb_ops;
 526         dinfo->pdev  = pdev;
 527
 528         /* Reserve pixmap space. */
 529         info->pixmap.addr = kmalloc(64 * 1024, GFP_KERNEL);
 530         if (info->pixmap.addr == NULL) {
 531                 ERR_MSG("Cannot reserve pixmap memory.\n");
 532                 goto err_out_pixmap;
 533         }
 534         memset(info->pixmap.addr, 0, 64 * 1024);
 535
 536         /* set early this option because it could be changed by tv encoder
 537            driver */
 538         dinfo->fixed_mode = fixed;
 539
 540         /* Enable device. */
 541         if ((err = pci_enable_device(pdev))) {
 542                 ERR_MSG("Cannot enable device.\n");
 543                 cleanup(dinfo);
 544                 return -ENODEV;
 545         }
 546
 547         /* Set base addresses. */
 548         if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
 549                         (ent->device == PCI_DEVICE_ID_INTEL_915GM)) {
 550                 aperture_bar = 2;
 551                 mmio_bar = 0;
 552                 /* Disable HW cursor on 915G/M (not implemented yet) */
 553                 hwcursor = 0;
 554         }
 555         dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
 556         dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
 557         dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
 558         DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
 559                 (unsigned long long)pci_resource_start(pdev, aperture_bar),
 560                 (unsigned long long)pci_resource_len(pdev, aperture_bar),
 561                 (unsigned long long)pci_resource_start(pdev, mmio_bar),
 562                 (unsigned long long)pci_resource_len(pdev, mmio_bar));
 563
 564         /* Reserve the fb and MMIO regions */
 565         if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
 566                                 INTELFB_MODULE_NAME)) {
 567                 ERR_MSG("Cannot reserve FB region.\n");
 568                 cleanup(dinfo);
 569                 return -ENODEV;
 570         }
 571
 572         dinfo->flag |= INTELFB_FB_ACQUIRED;
 573
 574         if (!request_mem_region(dinfo->mmio_base_phys,
 575                                 INTEL_REG_SIZE,
 576                                 INTELFB_MODULE_NAME)) {
 577                 ERR_MSG("Cannot reserve MMIO region.\n");
 578                 cleanup(dinfo);
 579                 return -ENODEV;
 580         }
 581
 582         dinfo->flag |= INTELFB_MMIO_ACQUIRED;
 583
 584         /* Get the chipset info. */
 585         dinfo->pci_chipset = pdev->device;
 586
 587         if (intelfbhw_get_chipset(pdev, dinfo)) {
 588                 cleanup(dinfo);
 589                 return -ENODEV;
 590         }
 591
 592         if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
 593                 cleanup(dinfo);
 594                 return -ENODEV;
 595         }
 596
 597         INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
 598                 "stolen memory %dkB\n",
 599                 pdev->bus->number, PCI_SLOT(pdev->devfn),
 600                 PCI_FUNC(pdev->devfn), dinfo->name,
 601                 BtoMB(aperture_size), BtoKB(stolen_size));
 602
 603         /* Set these from the options. */
 604         dinfo->accel    = accel;
 605         dinfo->hwcursor = hwcursor;
 606
 607         if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
 608                 INF_MSG("Acceleration is not supported for the %s chipset.\n",
 609                         dinfo->name);
 610                 dinfo->accel = 0;
 611         }
 612
 613         /* Framebuffer parameters - Use all the stolen memory if >= vram */
 614         if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
 615                 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
 616                 dinfo->fbmem_gart = 0;
 617         } else {
 618                 dinfo->fb.size =  MB(vram);
 619                 dinfo->fbmem_gart = 1;
 620         }
 621
 622         /* Allocate space for the ring buffer and HW cursor if enabled. */
 623         if (dinfo->accel) {
 624                 dinfo->ring.size = RINGBUFFER_SIZE;
 625                 dinfo->ring_tail_mask = dinfo->ring.size - 1;
 626         }
 627         if (dinfo->hwcursor) {
 628                 dinfo->cursor.size = HW_CURSOR_SIZE;
 629         }
 630
 631         /* Use agpgart to manage the GATT */
 632         if (!(bridge = agp_backend_acquire(pdev))) {
 633                 ERR_MSG("cannot acquire agp\n");
 634                 cleanup(dinfo);
 635                 return -ENODEV;
 636         }
 637
 638         /* get the current gatt info */
 639         if (agp_copy_info(bridge, &gtt_info)) {
 640                 ERR_MSG("cannot get agp info\n");
 641                 agp_backend_release(bridge);
 642                 cleanup(dinfo);
 643                 return -ENODEV;
 644         }
 645
 646         if (MB(voffset) < stolen_size)
 647                 offset = (stolen_size >> 12);
 648         else
 649                 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
 650
 651         /* set the mem offsets - set them after the already used pages */
 652         if (dinfo->accel) {
 653                 dinfo->ring.offset = offset + gtt_info.current_memory;
 654         }
 655         if (dinfo->hwcursor) {
 656                 dinfo->cursor.offset = offset +
 657                         + gtt_info.current_memory + (dinfo->ring.size >> 12);
 658         }
 659         if (dinfo->fbmem_gart) {
 660                 dinfo->fb.offset = offset +
 661                         + gtt_info.current_memory + (dinfo->ring.size >> 12)
 662                         + (dinfo->cursor.size >> 12);
 663         }
 664
 665         /* Allocate memories (which aren't stolen) */
 666         /* Map the fb and MMIO regions */
 667         /* ioremap only up to the end of used aperture */
 668         dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
 669                 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
 670                  + dinfo->fb.size);
 671         if (!dinfo->aperture.virtual) {
 672                 ERR_MSG("Cannot remap FB region.\n");
 673                 cleanup(dinfo);
 674                 return -ENODEV;
 675         }
 676
 677         dinfo->mmio_base =
 678                 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
 679                                                INTEL_REG_SIZE);
 680         if (!dinfo->mmio_base) {
 681                 ERR_MSG("Cannot remap MMIO region.\n");
 682                 cleanup(dinfo);
 683                 return -ENODEV;
 684         }
 685
 686         if (dinfo->accel) {
 687                 if (!(dinfo->gtt_ring_mem =
 688                       agp_allocate_memory(bridge, dinfo->ring.size >> 12,
 689                                           AGP_NORMAL_MEMORY))) {
 690                         ERR_MSG("cannot allocate ring buffer memory\n");
 691                         agp_backend_release(bridge);
 692                         cleanup(dinfo);
 693                         return -ENOMEM;
 694                 }
 695                 if (agp_bind_memory(dinfo->gtt_ring_mem,
 696                                     dinfo->ring.offset)) {
 697                         ERR_MSG("cannot bind ring buffer memory\n");
 698                         agp_backend_release(bridge);
 699                         cleanup(dinfo);
 700                         return -EBUSY;
 701                 }
 702                 dinfo->ring.physical = dinfo->aperture.physical
 703                         + (dinfo->ring.offset << 12);
 704                 dinfo->ring.virtual  = dinfo->aperture.virtual
 705                         + (dinfo->ring.offset << 12);
 706                 dinfo->ring_head = dinfo->ring.virtual;
 707         }
 708         if (dinfo->hwcursor) {
 709                 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
 710                         : AGP_NORMAL_MEMORY;
 711                 if (!(dinfo->gtt_cursor_mem =
 712                       agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
 713                                           agp_memtype))) {
 714                         ERR_MSG("cannot allocate cursor memory\n");
 715                         agp_backend_release(bridge);
 716                         cleanup(dinfo);
 717                         return -ENOMEM;
 718                 }
 719                 if (agp_bind_memory(dinfo->gtt_cursor_mem,
 720                                     dinfo->cursor.offset)) {
 721                         ERR_MSG("cannot bind cursor memory\n");
 722                         agp_backend_release(bridge);
 723                         cleanup(dinfo);
 724                         return -EBUSY;
 725                 }
 726                 if (dinfo->mobile)
 727                         dinfo->cursor.physical
 728                                 = dinfo->gtt_cursor_mem->physical;
 729                 else
 730                         dinfo->cursor.physical = dinfo->aperture.physical
 731                                 + (dinfo->cursor.offset << 12);
 732                 dinfo->cursor.virtual = dinfo->aperture.virtual
 733                         + (dinfo->cursor.offset << 12);
 734         }
 735         if (dinfo->fbmem_gart) {
 736                 if (!(dinfo->gtt_fb_mem =
 737                       agp_allocate_memory(bridge, dinfo->fb.size >> 12,
 738                                           AGP_NORMAL_MEMORY))) {
 739                         WRN_MSG("cannot allocate framebuffer memory - use "
 740                                 "the stolen one\n");
 741                         dinfo->fbmem_gart = 0;
 742                 }
 743                 if (agp_bind_memory(dinfo->gtt_fb_mem,
 744                                     dinfo->fb.offset)) {
 745                         WRN_MSG("cannot bind framebuffer memory - use "
 746                                 "the stolen one\n");
 747                         dinfo->fbmem_gart = 0;
 748                 }
 749         }
 750
 751         /* update framebuffer memory parameters */
 752         if (!dinfo->fbmem_gart)
 753                 dinfo->fb.offset = 0;   /* starts at offset 0 */
 754         dinfo->fb.physical = dinfo->aperture.physical
 755                 + (dinfo->fb.offset << 12);
 756         dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
 757         dinfo->fb_start = dinfo->fb.offset << 12;
 758
 759         /* release agpgart */
 760         agp_backend_release(bridge);
 761
 762         if (mtrr)
 763                 set_mtrr(dinfo);
 764
 765         DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%x)\n",
 766                 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
 767                 (u32 __iomem ) dinfo->fb.virtual);
 768         DBG_MSG("MMIO: 0x%x/0x%x (0x%x)\n",
 769                 dinfo->mmio_base_phys, INTEL_REG_SIZE,
 770                 (u32 __iomem) dinfo->mmio_base);
 771         DBG_MSG("ring buffer: 0x%x/0x%x (0x%x)\n",
 772                 dinfo->ring.physical, dinfo->ring.size,
 773                 (u32 __iomem ) dinfo->ring.virtual);
 774         DBG_MSG("HW cursor: 0x%x/0x%x (0x%x) (offset 0x%x) (phys 0x%x)\n",
 775                 dinfo->cursor.physical, dinfo->cursor.size,
 776                 (u32 __iomem ) dinfo->cursor.virtual, dinfo->cursor.offset,
 777                 dinfo->cursor.physical);
 778
 779         DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
 780                 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
 781         DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
 782
 783         if (probeonly)
 784                 bailout(dinfo);
 785
 786         /*
 787          * Check if the LVDS port or any DVO ports are enabled.  If so,
 788          * don't allow mode switching
 789          */
 790         dvo = intelfbhw_check_non_crt(dinfo);
 791         if (dvo) {
 792                 dinfo->fixed_mode = 1;
 793                 WRN_MSG("Non-CRT device is enabled ( ");
 794                 i = 0;
 795                 while (dvo) {
 796                         if (dvo & 1) {
 797                                 s = intelfbhw_dvo_to_string(1 << i);
 798                                 if (s)
 799                                         printk("%s ", s);
 800                         }
 801                         dvo >>= 1;
 802                         ++i;
 803                 }
 804                 printk(").  Disabling mode switching.\n");
 805         }
 806
 807         if (bailearly == 1)
 808                 bailout(dinfo);
 809
 810         if (FIXED_MODE(dinfo) && ORIG_VIDEO_ISVGA != VIDEO_TYPE_VLFB) {
 811                 ERR_MSG("Video mode must be programmed at boot time.\n");
 812                 cleanup(dinfo);
 813                 return -ENODEV;
 814         }
 815
 816         if (bailearly == 2)
 817                 bailout(dinfo);
 818
 819         /* Initialise dinfo and related data. */
 820         /* If an initial mode was programmed at boot time, get its details. */
 821         if (ORIG_VIDEO_ISVGA == VIDEO_TYPE_VLFB)
 822                 get_initial_mode(dinfo);
 823
 824         if (bailearly == 3)
 825                 bailout(dinfo);
 826
 827         if (FIXED_MODE(dinfo)) {
 828                 /* remap fb address */
 829                 update_dinfo(dinfo, &dinfo->initial_var);
 830         }
 831
 832         if (bailearly == 4)
 833                 bailout(dinfo);
 834
 835
 836         if (intelfb_set_fbinfo(dinfo)) {
 837                 cleanup(dinfo);
 838                 return -ENODEV;
 839         }
 840
 841         if (bailearly == 5)
 842                 bailout(dinfo);
 843
 844         if (bailearly == 6)
 845                 bailout(dinfo);
 846
 847         pci_set_drvdata(pdev, dinfo);
 848
 849         /* Save the initial register state. */
 850         i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
 851                                     bailearly > 6 ? bailearly - 6 : 0);
 852         if (i != 0) {
 853                 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
 854                 bailout(dinfo);
 855         }
 856
 857         intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
 858
 859         if (bailearly == 18)
 860                 bailout(dinfo);
 861
 862         /* Cursor initialisation */
 863         if (dinfo->hwcursor) {
 864                 intelfbhw_cursor_init(dinfo);
 865                 intelfbhw_cursor_reset(dinfo);
 866         }
 867
 868         if (bailearly == 19)
 869                 bailout(dinfo);
 870
 871         /* 2d acceleration init */
 872         if (dinfo->accel)
 873                 intelfbhw_2d_start(dinfo);
 874
 875         if (bailearly == 20)
 876                 bailout(dinfo);
 877
 878         if (noregister)
 879                 bailout(dinfo);
 880
 881         if (register_framebuffer(dinfo->info) < 0) {
 882                 ERR_MSG("Cannot register framebuffer.\n");
 883                 cleanup(dinfo);
 884                 return -ENODEV;
 885         }
 886
 887         dinfo->registered = 1;
 888
 889         return 0;
 890
 891 err_out_pixmap:
 892         fb_dealloc_cmap(&info->cmap);
 893 err_out_cmap:
 894         framebuffer_release(info);
 895         return -ENODEV;
 896 }
 897
 898 static void __devexit
 899 intelfb_pci_unregister(struct pci_dev *pdev)
 900 {
 901         struct intelfb_info *dinfo = pci_get_drvdata(pdev);
 902
 903         DBG_MSG("intelfb_pci_unregister\n");
 904
 905         if (!dinfo)
 906                 return;
 907
 908         cleanup(dinfo);
 909
 910         pci_set_drvdata(pdev, NULL);
 911 }
 912
 913 /***************************************************************
 914  *                       helper functions                      *
 915  ***************************************************************/
 916
 917 int __inline__
 918 intelfb_var_to_depth(const struct fb_var_screeninfo *var)
 919 {
 920         DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
 921                 var->bits_per_pixel, var->green.length);
 922
 923         switch (var->bits_per_pixel) {
 924         case 16:
 925                 return (var->green.length == 6) ? 16 : 15;
 926         case 32:
 927                 return 24;
 928         default:
 929                 return var->bits_per_pixel;
 930         }
 931 }
 932
 933
 934 static __inline__ int
 935 var_to_refresh(const struct fb_var_screeninfo *var)
 936 {
 937         int xtot = var->xres + var->left_margin + var->right_margin +
 938                    var->hsync_len;
 939         int ytot = var->yres + var->upper_margin + var->lower_margin +
 940                    var->vsync_len;
 941
 942         return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
 943 }
 944
 945 /***************************************************************
 946  *                Various intialisation functions              *
 947  ***************************************************************/
 948
 949 static void __devinit
 950 get_initial_mode(struct intelfb_info *dinfo)
 951 {
 952         struct fb_var_screeninfo *var;
 953         int xtot, ytot;
 954
 955         DBG_MSG("get_initial_mode\n");
 956
 957         dinfo->initial_vga = 1;
 958         dinfo->initial_fb_base = screen_info.lfb_base;
 959         dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
 960         dinfo->initial_pitch = screen_info.lfb_linelength;
 961
 962         var = &dinfo->initial_var;
 963         memset(var, 0, sizeof(*var));
 964         var->xres = screen_info.lfb_width;
 965         var->yres = screen_info.lfb_height;
 966         var->bits_per_pixel = screen_info.lfb_depth;
 967         switch (screen_info.lfb_depth) {
 968         case 15:
 969                 var->bits_per_pixel = 16;
 970                 break;
 971         case 24:
 972                 var->bits_per_pixel = 32;
 973                 break;
 974         }
 975
 976         DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
 977                 dinfo->initial_fb_base, dinfo->initial_video_ram,
 978                 BtoKB(dinfo->initial_video_ram));
 979
 980         DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
 981                 var->xres, var->yres, var->bits_per_pixel,
 982                 dinfo->initial_pitch);
 983
 984         /* Dummy timing values (assume 60Hz) */
 985         var->left_margin = (var->xres / 8) & 0xf8;
 986         var->right_margin = 32;
 987         var->upper_margin = 16;
 988         var->lower_margin = 4;
 989         var->hsync_len = (var->xres / 8) & 0xf8;
 990         var->vsync_len = 4;
 991
 992         xtot = var->xres + var->left_margin +
 993                 var->right_margin + var->hsync_len;
 994         ytot = var->yres + var->upper_margin +
 995                 var->lower_margin + var->vsync_len;
 996         var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
 997
 998         var->height = -1;
 999         var->width = -1;
1000
1001         if (var->bits_per_pixel > 8) {
1002                 var->red.offset = screen_info.red_pos;
1003                 var->red.length = screen_info.red_size;
1004                 var->green.offset = screen_info.green_pos;
1005                 var->green.length = screen_info.green_size;
1006                 var->blue.offset = screen_info.blue_pos;
1007                 var->blue.length = screen_info.blue_size;
1008                 var->transp.offset = screen_info.rsvd_pos;
1009                 var->transp.length = screen_info.rsvd_size;
1010         } else {
1011                 var->red.length = 8;
1012                 var->green.length = 8;
1013                 var->blue.length = 8;
1014         }
1015 }
1016
1017 static int __devinit
1018 intelfb_init_var(struct intelfb_info *dinfo)
1019 {
1020         struct fb_var_screeninfo *var;
1021         int msrc = 0;
1022
1023         DBG_MSG("intelfb_init_var\n");
1024
1025         var = &dinfo->info->var;
1026         if (FIXED_MODE(dinfo)) {
1027                 memcpy(var, &dinfo->initial_var,
1028                        sizeof(struct fb_var_screeninfo));
1029                 msrc = 5;
1030         } else {
1031                 if (mode) {
1032                         msrc = fb_find_mode(var, dinfo->info, mode,
1033                                             vesa_modes, VESA_MODEDB_SIZE,
1034                                             NULL, 0);
1035                         if (msrc)
1036                                 msrc |= 8;
1037                 }
1038                 if (!msrc) {
1039                         msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1040                                             vesa_modes, VESA_MODEDB_SIZE,
1041                                             NULL, 0);
1042                 }
1043         }
1044
1045         if (!msrc) {
1046                 ERR_MSG("Cannot find a suitable video mode.\n");
1047                 return 1;
1048         }
1049
1050         INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1051                 var->bits_per_pixel, var_to_refresh(var));
1052
1053         DBG_MSG("Initial video mode is from %d.\n", msrc);
1054
1055 #if ALLOCATE_FOR_PANNING
1056         /* Allow use of half of the video ram for panning */
1057         var->xres_virtual = var->xres;
1058         var->yres_virtual =
1059                 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1060         if (var->yres_virtual < var->yres)
1061                 var->yres_virtual = var->yres;
1062 #else
1063         var->yres_virtual = var->yres;
1064 #endif
1065
1066         if (dinfo->accel)
1067                 var->accel_flags |= FB_ACCELF_TEXT;
1068         else
1069                 var->accel_flags &= ~FB_ACCELF_TEXT;
1070
1071         return 0;
1072 }
1073
1074 static int __devinit
1075 intelfb_set_fbinfo(struct intelfb_info *dinfo)
1076 {
1077         struct fb_info *info = dinfo->info;
1078
1079         DBG_MSG("intelfb_set_fbinfo\n");
1080
1081         info->flags = FBINFO_FLAG_DEFAULT;
1082         info->fbops = &intel_fb_ops;
1083         info->pseudo_palette = dinfo->pseudo_palette;
1084
1085         info->pixmap.size = 64*1024;
1086         info->pixmap.buf_align = 8;
1087         info->pixmap.access_align = 32;
1088         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1089
1090         if (intelfb_init_var(dinfo))
1091                 return 1;
1092
1093         info->pixmap.scan_align = 1;
1094         strcpy(info->fix.id, dinfo->name);
1095         info->fix.smem_start = dinfo->fb.physical;
1096         info->fix.smem_len = dinfo->fb.size;
1097         info->fix.type = FB_TYPE_PACKED_PIXELS;
1098         info->fix.type_aux = 0;
1099         info->fix.xpanstep = 8;
1100         info->fix.ypanstep = 1;
1101         info->fix.ywrapstep = 0;
1102         info->fix.mmio_start = dinfo->mmio_base_phys;
1103         info->fix.mmio_len = INTEL_REG_SIZE;
1104         info->fix.accel = FB_ACCEL_I830;
1105         update_dinfo(dinfo, &info->var);
1106
1107         return 0;
1108 }
1109
1110 /* Update dinfo to match the active video mode. */
1111 static void
1112 update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var)
1113 {
1114         DBG_MSG("update_dinfo\n");
1115
1116         dinfo->bpp = var->bits_per_pixel;
1117         dinfo->depth = intelfb_var_to_depth(var);
1118         dinfo->xres = var->xres;
1119         dinfo->yres = var->xres;
1120         dinfo->pixclock = var->pixclock;
1121
1122         dinfo->info->fix.visual = dinfo->visual;
1123         dinfo->info->fix.line_length = dinfo->pitch;
1124
1125         switch (dinfo->bpp) {
1126         case 8:
1127                 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1128                 dinfo->pitch = var->xres_virtual;
1129                 break;
1130         case 16:
1131                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1132                 dinfo->pitch = var->xres_virtual * 2;
1133                 break;
1134         case 32:
1135                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1136                 dinfo->pitch = var->xres_virtual * 4;
1137                 break;
1138         }
1139
1140         /* Make sure the line length is a aligned correctly. */
1141         dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1142
1143         if (FIXED_MODE(dinfo))
1144                 dinfo->pitch = dinfo->initial_pitch;
1145
1146         dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1147         dinfo->info->fix.line_length = dinfo->pitch;
1148         dinfo->info->fix.visual = dinfo->visual;
1149 }
1150
1151 /* fbops functions */
1152
1153 /***************************************************************
1154  *                       fbdev interface                       *
1155  ***************************************************************/
1156
1157 static int
1158 intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1159 {
1160         int change_var = 0;
1161         struct fb_var_screeninfo v;
1162         struct intelfb_info *dinfo;
1163         static int first = 1;
1164
1165         DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1166
1167         dinfo = GET_DINFO(info);
1168
1169         if (intelfbhw_validate_mode(dinfo, var) != 0)
1170                 return -EINVAL;
1171
1172         v = *var;
1173
1174         /* Check for a supported bpp. */
1175         if (v.bits_per_pixel <= 8) {
1176                 v.bits_per_pixel = 8;
1177         } else if (v.bits_per_pixel <= 16) {
1178                 if (v.bits_per_pixel == 16)
1179                         v.green.length = 6;
1180                 v.bits_per_pixel = 16;
1181         } else if (v.bits_per_pixel <= 32) {
1182                 v.bits_per_pixel = 32;
1183         } else
1184                 return -EINVAL;
1185
1186         change_var = ((info->var.xres != var->xres) ||
1187                       (info->var.yres != var->yres) ||
1188                       (info->var.xres_virtual != var->xres_virtual) ||
1189                       (info->var.yres_virtual != var->yres_virtual) ||
1190                       (info->var.bits_per_pixel != var->bits_per_pixel) ||
1191                       memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1192                       memcmp(&info->var.green, &var->green,
1193                              sizeof(var->green)) ||
1194                       memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1195
1196         if (FIXED_MODE(dinfo) &&
1197             (change_var ||
1198              var->yres_virtual > dinfo->initial_var.yres_virtual ||
1199              var->yres_virtual < dinfo->initial_var.yres ||
1200              var->xoffset || var->nonstd)) {
1201                 if (first) {
1202                         ERR_MSG("Changing the video mode is not supported.\n");
1203                         first = 0;
1204                 }
1205                 return -EINVAL;
1206         }
1207
1208         switch (intelfb_var_to_depth(&v)) {
1209         case 8:
1210                 v.red.offset = v.green.offset = v.blue.offset = 0;
1211                 v.red.length = v.green.length = v.blue.length = 8;
1212                 v.transp.offset = v.transp.length = 0;
1213                 break;
1214         case 15:
1215                 v.red.offset = 10;
1216                 v.green.offset = 5;
1217                 v.blue.offset = 0;
1218                 v.red.length = v.green.length = v.blue.length = 5;
1219                 v.transp.offset = v.transp.length = 0;
1220                 break;
1221         case 16:
1222                 v.red.offset = 11;
1223                 v.green.offset = 5;
1224                 v.blue.offset = 0;
1225                 v.red.length = 5;
1226                 v.green.length = 6;
1227                 v.blue.length = 5;
1228                 v.transp.offset = v.transp.length = 0;
1229                 break;
1230         case 24:
1231                 v.red.offset = 16;
1232                 v.green.offset = 8;
1233                 v.blue.offset = 0;
1234                 v.red.length = v.green.length = v.blue.length = 8;
1235                 v.transp.offset = v.transp.length = 0;
1236                 break;
1237         case 32:
1238                 v.red.offset = 16;
1239                 v.green.offset = 8;
1240                 v.blue.offset = 0;
1241                 v.red.length = v.green.length = v.blue.length = 8;
1242                 v.transp.offset = 24;
1243                 v.transp.length = 8;
1244                 break;
1245         }
1246
1247         if (v.xoffset < 0)
1248                 v.xoffset = 0;
1249         if (v.yoffset < 0)
1250                 v.yoffset = 0;
1251
1252         if (v.xoffset > v.xres_virtual - v.xres)
1253                 v.xoffset = v.xres_virtual - v.xres;
1254         if (v.yoffset > v.yres_virtual - v.yres)
1255                 v.yoffset = v.yres_virtual - v.yres;
1256
1257         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1258                           v.transp.msb_right = 0;
1259
1260         *var = v;
1261
1262         return 0;
1263 }
1264
1265 static int
1266 intelfb_set_par(struct fb_info *info)
1267 {
1268         struct intelfb_hwstate *hw;
1269         struct intelfb_info *dinfo = GET_DINFO(info);
1270
1271         if (FIXED_MODE(dinfo)) {
1272                 ERR_MSG("Changing the video mode is not supported.\n");
1273                 return -EINVAL;
1274         }
1275
1276         hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1277         if (!hw)
1278                 return -ENOMEM;
1279
1280         DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1281                 info->var.yres, info->var.bits_per_pixel);
1282
1283         intelfb_blank(FB_BLANK_POWERDOWN, info);
1284
1285         if (ACCEL(dinfo, info))
1286                 intelfbhw_2d_stop(dinfo);
1287
1288         memcpy(hw, &dinfo->save_state, sizeof(*hw));
1289         if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1290                 goto invalid_mode;
1291         if (intelfbhw_program_mode(dinfo, hw, 0))
1292                 goto invalid_mode;
1293
1294 #if REGDUMP > 0
1295         intelfbhw_read_hw_state(dinfo, hw, 0);
1296         intelfbhw_print_hw_state(dinfo, hw);
1297 #endif
1298
1299         update_dinfo(dinfo, &info->var);
1300
1301         if (ACCEL(dinfo, info))
1302                 intelfbhw_2d_start(dinfo);
1303
1304         intelfb_pan_display(&info->var, info);
1305
1306         intelfb_blank(FB_BLANK_UNBLANK, info);
1307
1308         if (ACCEL(dinfo, info)) {
1309                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1310                 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1311                 FBINFO_HWACCEL_IMAGEBLIT;
1312         } else {
1313                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1314         }
1315         kfree(hw);
1316         return 0;
1317 invalid_mode:
1318         kfree(hw);
1319         return -EINVAL;
1320 }
1321
1322 static int
1323 intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1324                   unsigned blue, unsigned transp, struct fb_info *info)
1325 {
1326         struct intelfb_info *dinfo = GET_DINFO(info);
1327
1328 #if VERBOSE > 0
1329         DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1330 #endif
1331
1332         if (regno > 255)
1333                 return 1;
1334
1335         if (dinfo->depth == 8) {
1336                 red >>= 8;
1337                 green >>= 8;
1338                 blue >>= 8;
1339
1340                 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1341                                     transp);
1342         }
1343
1344         if (regno < 16) {
1345                 switch (dinfo->depth) {
1346                 case 15:
1347                         dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1348                                 ((green & 0xf800) >>  6) |
1349                                 ((blue & 0xf800) >> 11);
1350                         break;
1351                 case 16:
1352                         dinfo->pseudo_palette[regno] = (red & 0xf800) |
1353                                 ((green & 0xfc00) >>  5) |
1354                                 ((blue  & 0xf800) >> 11);
1355                         break;
1356                 case 24:
1357                         dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1358                                 (green & 0xff00) |
1359                                 ((blue  & 0xff00) >> 8);
1360                         break;
1361                 }
1362         }
1363
1364         return 0;
1365 }
1366
1367 static int
1368 intelfb_blank(int blank, struct fb_info *info)
1369 {
1370         intelfbhw_do_blank(blank, info);
1371         return 0;
1372 }
1373
1374 static int
1375 intelfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1376 {
1377         intelfbhw_pan_display(var, info);
1378         return 0;
1379 }
1380
1381 /* When/if we have our own ioctls. */
1382 static int
1383 intelfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
1384 {
1385         int retval = 0;
1386
1387         return retval;
1388 }
1389
1390 static void
1391 intelfb_fillrect (struct fb_info *info, const struct fb_fillrect *rect)
1392 {
1393         struct intelfb_info *dinfo = GET_DINFO(info);
1394         u32 rop, color;
1395
1396 #if VERBOSE > 0
1397         DBG_MSG("intelfb_fillrect\n");
1398 #endif
1399
1400         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1401                 return cfb_fillrect(info, rect);
1402
1403         if (rect->rop == ROP_COPY)
1404                 rop = PAT_ROP_GXCOPY;
1405         else // ROP_XOR
1406                 rop = PAT_ROP_GXXOR;
1407
1408         if (dinfo->depth != 8)
1409                 color = dinfo->pseudo_palette[rect->color];
1410         else
1411                 color = rect->color;
1412
1413         intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1414                               rect->width, rect->height, color,
1415                               dinfo->pitch, info->var.bits_per_pixel,
1416                               rop);
1417 }
1418
1419 static void
1420 intelfb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
1421 {
1422         struct intelfb_info *dinfo = GET_DINFO(info);
1423
1424 #if VERBOSE > 0
1425         DBG_MSG("intelfb_copyarea\n");
1426 #endif
1427
1428         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1429                 return cfb_copyarea(info, region);
1430
1431         intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1432                             region->dy, region->width, region->height,
1433                             dinfo->pitch, info->var.bits_per_pixel);
1434 }
1435
1436 static void
1437 intelfb_imageblit(struct fb_info *info, const struct fb_image *image)
1438 {
1439         struct intelfb_info *dinfo = GET_DINFO(info);
1440         u32 fgcolor, bgcolor;
1441
1442 #if VERBOSE > 0
1443         DBG_MSG("intelfb_imageblit\n");
1444 #endif
1445
1446         if (!ACCEL(dinfo, info) || dinfo->depth == 4
1447             || image->depth != 1)
1448                 return cfb_imageblit(info, image);
1449
1450         if (dinfo->depth != 8) {
1451                 fgcolor = dinfo->pseudo_palette[image->fg_color];
1452                 bgcolor = dinfo->pseudo_palette[image->bg_color];
1453         } else {
1454                 fgcolor = image->fg_color;
1455                 bgcolor = image->bg_color;
1456         }
1457
1458         if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1459                                     image->height, image->data,
1460                                     image->dx, image->dy,
1461                                     dinfo->pitch, info->var.bits_per_pixel))
1462                 return cfb_imageblit(info, image);
1463 }
1464
1465 static int
1466 intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1467 {
1468         struct intelfb_info *dinfo = GET_DINFO(info);
1469
1470 #if VERBOSE > 0
1471         DBG_MSG("intelfb_cursor\n");
1472 #endif
1473
1474         if (!dinfo->hwcursor)
1475                 return -ENODEV;
1476
1477         intelfbhw_cursor_hide(dinfo);
1478
1479         /* If XFree killed the cursor - restore it */
1480         if (INREG(CURSOR_A_BASEADDR) != dinfo->cursor.offset << 12) {
1481                 u32 fg, bg;
1482
1483                 DBG_MSG("the cursor was killed - restore it !!\n");
1484                 DBG_MSG("size %d, %d   pos %d, %d\n",
1485                         cursor->image.width, cursor->image.height,
1486                         cursor->image.dx, cursor->image.dy);
1487
1488                 intelfbhw_cursor_init(dinfo);
1489                 intelfbhw_cursor_reset(dinfo);
1490                 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1491                                         cursor->image.dy);
1492
1493                 if (dinfo->depth != 8) {
1494                         fg =dinfo->pseudo_palette[cursor->image.fg_color];
1495                         bg =dinfo->pseudo_palette[cursor->image.bg_color];
1496                 } else {
1497                         fg = cursor->image.fg_color;
1498                         bg = cursor->image.bg_color;
1499                 }
1500                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1501                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1502                                       cursor->image.height,
1503                                       dinfo->cursor_src);
1504
1505                 if (cursor->enable)
1506                         intelfbhw_cursor_show(dinfo);
1507                 return 0;
1508         }
1509
1510         if (cursor->set & FB_CUR_SETPOS) {
1511                 u32 dx, dy;
1512
1513                 dx = cursor->image.dx - info->var.xoffset;
1514                 dy = cursor->image.dy - info->var.yoffset;
1515
1516                 intelfbhw_cursor_setpos(dinfo, dx, dy);
1517         }
1518
1519         if (cursor->set & FB_CUR_SETSIZE) {
1520                 if (cursor->image.width > 64 || cursor->image.height > 64)
1521                         return -ENXIO;
1522
1523                 intelfbhw_cursor_reset(dinfo);
1524         }
1525
1526         if (cursor->set & FB_CUR_SETCMAP) {
1527                 u32 fg, bg;
1528
1529                 if (dinfo->depth != 8) {
1530                         fg = dinfo->pseudo_palette[cursor->image.fg_color];
1531                         bg = dinfo->pseudo_palette[cursor->image.bg_color];
1532                 } else {
1533                         fg = cursor->image.fg_color;
1534                         bg = cursor->image.bg_color;
1535                 }
1536
1537                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1538         }
1539
1540         if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1541                 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1542                 u32 size = s_pitch * cursor->image.height;
1543                 u8 *dat = (u8 *) cursor->image.data;
1544                 u8 *msk = (u8 *) cursor->mask;
1545                 u8 src[64];
1546                 u32 i;
1547
1548                 if (cursor->image.depth != 1)
1549                         return -ENXIO;
1550
1551                 switch (cursor->rop) {
1552                 case ROP_XOR:
1553                         for (i = 0; i < size; i++)
1554                                 src[i] = dat[i] ^ msk[i];
1555                         break;
1556                 case ROP_COPY:
1557                 default:
1558                         for (i = 0; i < size; i++)
1559                                 src[i] = dat[i] & msk[i];
1560                         break;
1561                 }
1562
1563                 /* save the bitmap to restore it when XFree will
1564                    make the cursor dirty */
1565                 memcpy(dinfo->cursor_src, src, size);
1566
1567                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1568                                       cursor->image.height, src);
1569         }
1570
1571         if (cursor->enable)
1572                 intelfbhw_cursor_show(dinfo);
1573
1574         return 0;
1575 }
1576
1577 static int
1578 intelfb_sync(struct fb_info *info)
1579 {
1580         struct intelfb_info *dinfo = GET_DINFO(info);
1581
1582 #if VERBOSE > 0
1583         DBG_MSG("intelfb_sync\n");
1584 #endif
1585
1586         if (dinfo->ring_lockup)
1587                 return 0;
1588
1589         intelfbhw_do_sync(dinfo);
1590         return 0;
1591 }
1592