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