SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/video/intelfb/intelfbdrv.c

   1 /*
   2  * intelfb
   3  *
   4  * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM/
   5  * 945G/945GM integrated graphics chips.
   6  *
   7  * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org>
   8  *                   2004 Sylvain Meyer
   9  *                   2006 David Airlie
  10  *
  11  * This driver consists of two parts.  The first part (intelfbdrv.c) provides
  12  * the basic fbdev interfaces, is derived in part from the radeonfb and
  13  * vesafb drivers, and is covered by the GPL.  The second part (intelfbhw.c)
  14  * provides the code to program the hardware.  Most of it is derived from
  15  * the i810/i830 XFree86 driver.  The HW-specific code is covered here
  16  * under a dual license (GPL and MIT/XFree86 license).
  17  *
  18  * Author: David Dawes
  19  *
  20  */
  21
  22 /* $DHD: intelfb/intelfbdrv.c,v 1.20 2003/06/27 15:17:40 dawes Exp $ */
  23
  24 /*
  25  * Changes:
  26  *    01/2003 - Initial driver (0.1.0), no mode switching, no acceleration.
  27  *              This initial version is a basic core that works a lot like
  28  *              the vesafb driver.  It must be built-in to the kernel,
  29  *              and the initial video mode must be set with vga=XXX at
  30  *              boot time.  (David Dawes)
  31  *
  32  *    01/2003 - Version 0.2.0: Mode switching added, colormap support
  33  *              implemented, Y panning, and soft screen blanking implemented.
  34  *              No acceleration yet.  (David Dawes)
  35  *
  36  *    01/2003 - Version 0.3.0: fbcon acceleration support added.  Module
  37  *              option handling added.  (David Dawes)
  38  *
  39  *    01/2003 - Version 0.4.0: fbcon HW cursor support added.  (David Dawes)
  40  *
  41  *    01/2003 - Version 0.4.1: Add auto-generation of built-in modes.
  42  *              (David Dawes)
  43  *
  44  *    02/2003 - Version 0.4.2: Add check for active non-CRT devices, and
  45  *              mode validation checks.  (David Dawes)
  46  *
  47  *    02/2003 - Version 0.4.3: Check when the VC is in graphics mode so that
  48  *              acceleration is disabled while an XFree86 server is running.
  49  *              (David Dawes)
  50  *
  51  *    02/2003 - Version 0.4.4: Monitor DPMS support.  (David Dawes)
  52  *
  53  *    02/2003 - Version 0.4.5: Basic XFree86 + fbdev working.  (David Dawes)
  54  *
  55  *    02/2003 - Version 0.5.0: Modify to work with the 2.5.32 kernel as well
  56  *              as 2.4.x kernels.  (David Dawes)
  57  *
  58  *    02/2003 - Version 0.6.0: Split out HW-specifics into a separate file.
  59  *              (David Dawes)
  60  *
  61  *    02/2003 - Version 0.7.0: Test on 852GM/855GM.  Acceleration and HW
  62  *              cursor are disabled on this platform.  (David Dawes)
  63  *
  64  *    02/2003 - Version 0.7.1: Test on 845G.  Acceleration is disabled
  65  *              on this platform.  (David Dawes)
  66  *
  67  *    02/2003 - Version 0.7.2: Test on 830M.  Acceleration and HW
  68  *              cursor are disabled on this platform.  (David Dawes)
  69  *
  70  *    02/2003 - Version 0.7.3: Fix 8-bit modes for mobile platforms
  71  *              (David Dawes)
  72  *
  73  *    02/2003 - Version 0.7.4: Add checks for FB and FBCON_HAS_CFB* configured
  74  *              in the kernel, and add mode bpp verification and default
  75  *              bpp selection based on which FBCON_HAS_CFB* are configured.
  76  *              (David Dawes)
  77  *
  78  *    02/2003 - Version 0.7.5: Add basic package/install scripts based on the
  79  *              DRI packaging scripts.  (David Dawes)
  80  *
  81  *    04/2003 - Version 0.7.6: Fix typo that affects builds with SMP-enabled
  82  *              kernels.  (David Dawes, reported by Anupam).
  83  *
  84  *    06/2003 - Version 0.7.7:
  85  *              Fix Makefile.kernel build problem (Tsutomu Yasuda).
  86  *              Fix mis-placed #endif (2.4.21 kernel).
  87  *
  88  *    09/2004 - Version 0.9.0 - by Sylvain Meyer
  89  *              Port to linux 2.6 kernel fbdev
  90  *              Fix HW accel and HW cursor on i845G
  91  *              Use of agpgart for fb memory reservation
  92  *              Add mtrr support
  93  *
  94  *    10/2004 - Version 0.9.1
  95  *              Use module_param instead of old MODULE_PARM
  96  *              Some cleanup
  97  *
  98  *    11/2004 - Version 0.9.2
  99  *              Add vram option to reserve more memory than stolen by BIOS
 100  *              Fix intelfbhw_pan_display typo
 101  *              Add __initdata annotations
 102  *
 103  * TODO:
 104  *
 105  *
 106  * Wish List:
 107  *
 108  *
 109  */
 110
 111 #include <linux/config.h>
 112 #include <linux/module.h>
 113 #include <linux/kernel.h>
 114 #include <linux/errno.h>
 115 #include <linux/string.h>
 116 #include <linux/mm.h>
 117 #include <linux/tty.h>
 118 #include <linux/slab.h>
 119 #include <linux/delay.h>
 120 #include <linux/fb.h>
 121 #include <linux/ioport.h>
 122 #include <linux/init.h>
 123 #include <linux/pci.h>
 124 #include <linux/vmalloc.h>
 125 #include <linux/pagemap.h>
 126
 127 #include <asm/io.h>
 128
 129 #ifdef CONFIG_MTRR
 130 #include <asm/mtrr.h>
 131 #endif
 132
 133 #include "intelfb.h"
 134 #include "intelfbhw.h"
 135 #include "../edid.h"
 136
 137 static void __devinit get_initial_mode(struct intelfb_info *dinfo);
 138 static void update_dinfo(struct intelfb_info *dinfo,
 139                          struct fb_var_screeninfo *var);
 140 static int intelfb_open(struct fb_info *info, int user);
 141 static int intelfb_release(struct fb_info *info, int user);
 142 static int intelfb_check_var(struct fb_var_screeninfo *var,
 143                              struct fb_info *info);
 144 static int intelfb_set_par(struct fb_info *info);
 145 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 146                              unsigned blue, unsigned transp,
 147                              struct fb_info *info);
 148
 149 static int intelfb_blank(int blank, struct fb_info *info);
 150 static int intelfb_pan_display(struct fb_var_screeninfo *var,
 151                                struct fb_info *info);
 152
 153 static void intelfb_fillrect(struct fb_info *info,
 154                              const struct fb_fillrect *rect);
 155 static void intelfb_copyarea(struct fb_info *info,
 156                              const struct fb_copyarea *region);
 157 static void intelfb_imageblit(struct fb_info *info,
 158                               const struct fb_image *image);
 159 static int intelfb_cursor(struct fb_info *info,
 160                            struct fb_cursor *cursor);
 161
 162 static int intelfb_sync(struct fb_info *info);
 163
 164 static int intelfb_ioctl(struct fb_info *info,
 165                          unsigned int cmd, unsigned long arg);
 166
 167 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
 168                                           const struct pci_device_id *ent);
 169 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
 170 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
 171
 172 /*
 173  * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
 174  * mobile chipsets from being registered.
 175  */
 176 #if DETECT_VGA_CLASS_ONLY
 177 #define INTELFB_CLASS_MASK ~0 << 8
 178 #else
 179 #define INTELFB_CLASS_MASK 0
 180 #endif
 181
 182 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
 183         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_830M, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_830M },
 184         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_845G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_845G },
 185         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_85XGM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_85XGM },
 186         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_865G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_865G },
 187         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915G },
 188         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915GM },
 189         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945G },
 190         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GM },
 191         { 0, }
 192 };
 193
 194 /* Global data */
 195 static int num_registered = 0;
 196
 197 /* fb ops */
 198 static struct fb_ops intel_fb_ops = {
 199         .owner =                THIS_MODULE,
 200         .fb_open =              intelfb_open,
 201         .fb_release =           intelfb_release,
 202         .fb_check_var =         intelfb_check_var,
 203         .fb_set_par =           intelfb_set_par,
 204         .fb_setcolreg =         intelfb_setcolreg,
 205         .fb_blank =             intelfb_blank,
 206         .fb_pan_display =       intelfb_pan_display,
 207         .fb_fillrect  =         intelfb_fillrect,
 208         .fb_copyarea  =         intelfb_copyarea,
 209         .fb_imageblit =         intelfb_imageblit,
 210         .fb_cursor =            intelfb_cursor,
 211         .fb_sync =              intelfb_sync,
 212         .fb_ioctl =             intelfb_ioctl
 213 };
 214
 215 /* PCI driver module table */
 216 static struct pci_driver intelfb_driver = {
 217         .name =         "intelfb",
 218         .id_table =     intelfb_pci_table,
 219         .probe =        intelfb_pci_register,
 220         .remove =       __devexit_p(intelfb_pci_unregister)
 221 };
 222
 223 /* Module description/parameters */
 224 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
 225               "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
 226 MODULE_DESCRIPTION(
 227         "Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS " chipsets");
 228 MODULE_LICENSE("Dual BSD/GPL");
 229 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
 230
 231 static int accel        = 1;
 232 static int vram         = 4;
 233 static int hwcursor     = 0;
 234 static int mtrr         = 1;
 235 static int fixed        = 0;
 236 static int noinit       = 0;
 237 static int noregister   = 0;
 238 static int probeonly    = 0;
 239 static int idonly       = 0;
 240 static int bailearly    = 0;
 241 static int voffset      = 48;
 242 static char *mode       = NULL;
 243
 244 module_param(accel, bool, S_IRUGO);
 245 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
 246 module_param(vram, int, S_IRUGO);
 247 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
 248 module_param(voffset, int, S_IRUGO);
 249 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
 250 module_param(hwcursor, bool, S_IRUGO);
 251 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
 252 module_param(mtrr, bool, S_IRUGO);
 253 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
 254 module_param(fixed, bool, S_IRUGO);
 255 MODULE_PARM_DESC(fixed, "Disable mode switching");
 256 module_param(noinit, bool, 0);
 257 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
 258 module_param(noregister, bool, 0);
 259 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
 260 module_param(probeonly, bool, 0);
 261 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
 262 module_param(idonly, bool, 0);
 263 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
 264 module_param(bailearly, bool, 0);
 265 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
 266 module_param(mode, charp, S_IRUGO);
 267 MODULE_PARM_DESC(mode,
 268                  "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
 269
 270 #ifndef MODULE
 271 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
 272 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
 273 #define OPT_STRVAL(opt, name) (opt + strlen(name))
 274
 275 static __inline__ char *
 276 get_opt_string(const char *this_opt, const char *name)
 277 {
 278         const char *p;
 279         int i;
 280         char *ret;
 281
 282         p = OPT_STRVAL(this_opt, name);
 283         i = 0;
 284         while (p[i] && p[i] != ' ' && p[i] != ',')
 285                 i++;
 286         ret = kmalloc(i + 1, GFP_KERNEL);
 287         if (ret) {
 288                 strncpy(ret, p, i);
 289                 ret[i] = '\0';
 290         }
 291         return ret;
 292 }
 293
 294 static __inline__ int
 295 get_opt_int(const char *this_opt, const char *name, int *ret)
 296 {
 297         if (!ret)
 298                 return 0;
 299
 300         if (!OPT_EQUAL(this_opt, name))
 301                 return 0;
 302
 303         *ret = OPT_INTVAL(this_opt, name);
 304         return 1;
 305 }
 306
 307 static __inline__ int
 308 get_opt_bool(const char *this_opt, const char *name, int *ret)
 309 {
 310         if (!ret)
 311                 return 0;
 312
 313         if (OPT_EQUAL(this_opt, name)) {
 314                 if (this_opt[strlen(name)] == '=')
 315                         *ret = simple_strtoul(this_opt + strlen(name) + 1,
 316                                               NULL, 0);
 317                 else
 318                         *ret = 1;
 319         } else {
 320                 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
 321                         *ret = 0;
 322                 else
 323                         return 0;
 324         }
 325         return 1;
 326 }
 327
 328 static int __init
 329 intelfb_setup(char *options)
 330 {
 331         char *this_opt;
 332
 333         DBG_MSG("intelfb_setup\n");
 334
 335         if (!options || !*options) {
 336                 DBG_MSG("no options\n");
 337                 return 0;
 338         } else
 339                 DBG_MSG("options: %s\n", options);
 340
 341         /*
 342          * These are the built-in options analogous to the module parameters
 343          * defined above.
 344          *
 345          * The syntax is:
 346          *
 347          *    video=intelfb:[mode][,<param>=<val>] ...
 348          *
 349          * e.g.,
 350          *
 351          *    video=intelfb:1024x768-16@75,accel=0
 352          */
 353
 354         while ((this_opt = strsep(&options, ","))) {
 355                 if (!*this_opt)
 356                         continue;
 357                 if (get_opt_bool(this_opt, "accel", &accel))
 358                         ;
 359                 else if (get_opt_int(this_opt, "vram", &vram))
 360                         ;
 361                 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
 362                         ;
 363                 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
 364                         ;
 365                 else if (get_opt_bool(this_opt, "fixed", &fixed))
 366                         ;
 367                 else if (get_opt_bool(this_opt, "init", &noinit))
 368                         noinit = !noinit;
 369                 else if (OPT_EQUAL(this_opt, "mode="))
 370                         mode = get_opt_string(this_opt, "mode=");
 371                 else
 372                         mode = this_opt;
 373         }
 374
 375         return 0;
 376 }
 377
 378 #endif
 379
 380 static int __init
 381 intelfb_init(void)
 382 {
 383 #ifndef MODULE
 384         char *option = NULL;
 385 #endif
 386
 387         DBG_MSG("intelfb_init\n");
 388
 389         INF_MSG("Framebuffer driver for "
 390                 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
 391         INF_MSG("Version " INTELFB_VERSION "\n");
 392
 393         if (idonly)
 394                 return -ENODEV;
 395
 396 #ifndef MODULE
 397         if (fb_get_options("intelfb", &option))
 398                 return -ENODEV;
 399         intelfb_setup(option);
 400 #endif
 401
 402         return pci_register_driver(&intelfb_driver);
 403 }
 404
 405 static void __exit
 406 intelfb_exit(void)
 407 {
 408         DBG_MSG("intelfb_exit\n");
 409         pci_unregister_driver(&intelfb_driver);
 410 }
 411
 412 module_init(intelfb_init);
 413 module_exit(intelfb_exit);
 414
 415 /***************************************************************
 416  *                     mtrr support functions                  *
 417  ***************************************************************/
 418
 419 #ifdef CONFIG_MTRR
 420 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
 421 {
 422         dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
 423                                    dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
 424         if (dinfo->mtrr_reg < 0) {
 425                 ERR_MSG("unable to set MTRR\n");
 426                 return;
 427         }
 428         dinfo->has_mtrr = 1;
 429 }
 430 static inline void unset_mtrr(struct intelfb_info *dinfo)
 431 {
 432         if (dinfo->has_mtrr)
 433                 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
 434                          dinfo->aperture.size);
 435 }
 436 #else
 437 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
 438
 439 #define unset_mtrr(x) do { } while (0)
 440 #endif /* CONFIG_MTRR */
 441
 442 /***************************************************************
 443  *                        driver init / cleanup                *
 444  ***************************************************************/
 445
 446 static void
 447 cleanup(struct intelfb_info *dinfo)
 448 {
 449         DBG_MSG("cleanup\n");
 450
 451         if (!dinfo)
 452                 return;
 453
 454         intelfbhw_disable_irq(dinfo);
 455
 456         fb_dealloc_cmap(&dinfo->info->cmap);
 457         kfree(dinfo->info->pixmap.addr);
 458
 459         if (dinfo->registered)
 460                 unregister_framebuffer(dinfo->info);
 461
 462         unset_mtrr(dinfo);
 463
 464         if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
 465                 agp_unbind_memory(dinfo->gtt_fb_mem);
 466                 agp_free_memory(dinfo->gtt_fb_mem);
 467         }
 468         if (dinfo->gtt_cursor_mem) {
 469                 agp_unbind_memory(dinfo->gtt_cursor_mem);
 470                 agp_free_memory(dinfo->gtt_cursor_mem);
 471         }
 472         if (dinfo->gtt_ring_mem) {
 473                 agp_unbind_memory(dinfo->gtt_ring_mem);
 474                 agp_free_memory(dinfo->gtt_ring_mem);
 475         }
 476
 477         if (dinfo->mmio_base)
 478                 iounmap((void __iomem *)dinfo->mmio_base);
 479         if (dinfo->aperture.virtual)
 480                 iounmap((void __iomem *)dinfo->aperture.virtual);
 481
 482         if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
 483                 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
 484         if (dinfo->flag & INTELFB_FB_ACQUIRED)
 485                 release_mem_region(dinfo->aperture.physical,
 486                                    dinfo->aperture.size);
 487         framebuffer_release(dinfo->info);
 488 }
 489
 490 #define bailout(dinfo) do {                                             \
 491         DBG_MSG("bailout\n");                                           \
 492         cleanup(dinfo);                                                 \
 493         INF_MSG("Not going to register framebuffer, exiting...\n");     \
 494         return -ENODEV;                                                 \
 495 } while (0)
 496
 497
 498 static int __devinit
 499 intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
 500 {
 501         struct fb_info *info;
 502         struct intelfb_info *dinfo;
 503         int i, err, dvo;
 504         int aperture_size, stolen_size;
 505         struct agp_kern_info gtt_info;
 506         int agp_memtype;
 507         const char *s;
 508         struct agp_bridge_data *bridge;
 509         int aperture_bar = 0;
 510         int mmio_bar = 1;
 511         int offset;
 512
 513         DBG_MSG("intelfb_pci_register\n");
 514
 515         num_registered++;
 516         if (num_registered != 1) {
 517                 ERR_MSG("Attempted to register %d devices "
 518                         "(should be only 1).\n", num_registered);
 519                 return -ENODEV;
 520         }
 521
 522         info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
 523         if (!info) {
 524                 ERR_MSG("Could not allocate memory for intelfb_info.\n");
 525                 return -ENODEV;
 526         }
 527         if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
 528                 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
 529                 goto err_out_cmap;
 530                 return -ENODEV;
 531         }
 532
 533         dinfo = info->par;
 534         dinfo->info  = info;
 535         dinfo->fbops = &intel_fb_ops;
 536         dinfo->pdev  = pdev;
 537
 538         /* Reserve pixmap space. */
 539         info->pixmap.addr = kmalloc(64 * 1024, GFP_KERNEL);
 540         if (info->pixmap.addr == NULL) {
 541                 ERR_MSG("Cannot reserve pixmap memory.\n");
 542                 goto err_out_pixmap;
 543         }
 544         memset(info->pixmap.addr, 0, 64 * 1024);
 545
 546         /* set early this option because it could be changed by tv encoder
 547            driver */
 548         dinfo->fixed_mode = fixed;
 549
 550         /* Enable device. */
 551         if ((err = pci_enable_device(pdev))) {
 552                 ERR_MSG("Cannot enable device.\n");
 553                 cleanup(dinfo);
 554                 return -ENODEV;
 555         }
 556
 557         /* Set base addresses. */
 558         if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
 559             (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
 560             (ent->device == PCI_DEVICE_ID_INTEL_945G)  ||
 561             (ent->device == PCI_DEVICE_ID_INTEL_945GM)) {
 562                 aperture_bar = 2;
 563                 mmio_bar = 0;
 564         }
 565         dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
 566         dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
 567         dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
 568         DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
 569                 (unsigned long long)pci_resource_start(pdev, aperture_bar),
 570                 (unsigned long long)pci_resource_len(pdev, aperture_bar),
 571                 (unsigned long long)pci_resource_start(pdev, mmio_bar),
 572                 (unsigned long long)pci_resource_len(pdev, mmio_bar));
 573
 574         /* Reserve the fb and MMIO regions */
 575         if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
 576                                 INTELFB_MODULE_NAME)) {
 577                 ERR_MSG("Cannot reserve FB region.\n");
 578                 cleanup(dinfo);
 579                 return -ENODEV;
 580         }
 581
 582         dinfo->flag |= INTELFB_FB_ACQUIRED;
 583
 584         if (!request_mem_region(dinfo->mmio_base_phys,
 585                                 INTEL_REG_SIZE,
 586                                 INTELFB_MODULE_NAME)) {
 587                 ERR_MSG("Cannot reserve MMIO region.\n");
 588                 cleanup(dinfo);
 589                 return -ENODEV;
 590         }
 591
 592         dinfo->flag |= INTELFB_MMIO_ACQUIRED;
 593
 594         /* Get the chipset info. */
 595         dinfo->pci_chipset = pdev->device;
 596
 597         if (intelfbhw_get_chipset(pdev, dinfo)) {
 598                 cleanup(dinfo);
 599                 return -ENODEV;
 600         }
 601
 602         if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
 603                 cleanup(dinfo);
 604                 return -ENODEV;
 605         }
 606
 607         INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
 608                 "stolen memory %dkB\n",
 609                 pdev->bus->number, PCI_SLOT(pdev->devfn),
 610                 PCI_FUNC(pdev->devfn), dinfo->name,
 611                 BtoMB(aperture_size), BtoKB(stolen_size));
 612
 613         /* Set these from the options. */
 614         dinfo->accel    = accel;
 615         dinfo->hwcursor = hwcursor;
 616
 617         if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
 618                 INF_MSG("Acceleration is not supported for the %s chipset.\n",
 619                         dinfo->name);
 620                 dinfo->accel = 0;
 621         }
 622
 623         /* Framebuffer parameters - Use all the stolen memory if >= vram */
 624         if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
 625                 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
 626                 dinfo->fbmem_gart = 0;
 627         } else {
 628                 dinfo->fb.size =  MB(vram);
 629                 dinfo->fbmem_gart = 1;
 630         }
 631
 632         /* Allocate space for the ring buffer and HW cursor if enabled. */
 633         if (dinfo->accel) {
 634                 dinfo->ring.size = RINGBUFFER_SIZE;
 635                 dinfo->ring_tail_mask = dinfo->ring.size - 1;
 636         }
 637         if (dinfo->hwcursor) {
 638                 dinfo->cursor.size = HW_CURSOR_SIZE;
 639         }
 640
 641         /* Use agpgart to manage the GATT */
 642         if (!(bridge = agp_backend_acquire(pdev))) {
 643                 ERR_MSG("cannot acquire agp\n");
 644                 cleanup(dinfo);
 645                 return -ENODEV;
 646         }
 647
 648         /* get the current gatt info */
 649         if (agp_copy_info(bridge, &gtt_info)) {
 650                 ERR_MSG("cannot get agp info\n");
 651                 agp_backend_release(bridge);
 652                 cleanup(dinfo);
 653                 return -ENODEV;
 654         }
 655
 656         if (MB(voffset) < stolen_size)
 657                 offset = (stolen_size >> 12);
 658         else
 659                 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
 660
 661         /* set the mem offsets - set them after the already used pages */
 662         if (dinfo->accel) {
 663                 dinfo->ring.offset = offset + gtt_info.current_memory;
 664         }
 665         if (dinfo->hwcursor) {
 666                 dinfo->cursor.offset = offset +
 667                         + gtt_info.current_memory + (dinfo->ring.size >> 12);
 668         }
 669         if (dinfo->fbmem_gart) {
 670                 dinfo->fb.offset = offset +
 671                         + gtt_info.current_memory + (dinfo->ring.size >> 12)
 672                         + (dinfo->cursor.size >> 12);
 673         }
 674
 675         /* Allocate memories (which aren't stolen) */
 676         /* Map the fb and MMIO regions */
 677         /* ioremap only up to the end of used aperture */
 678         dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
 679                 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
 680                  + dinfo->fb.size);
 681         if (!dinfo->aperture.virtual) {
 682                 ERR_MSG("Cannot remap FB region.\n");
 683                 cleanup(dinfo);
 684                 return -ENODEV;
 685         }
 686
 687         dinfo->mmio_base =
 688                 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
 689                                                INTEL_REG_SIZE);
 690         if (!dinfo->mmio_base) {
 691                 ERR_MSG("Cannot remap MMIO region.\n");
 692                 cleanup(dinfo);
 693                 return -ENODEV;
 694         }
 695
 696         if (dinfo->accel) {
 697                 if (!(dinfo->gtt_ring_mem =
 698                       agp_allocate_memory(bridge, dinfo->ring.size >> 12,
 699                                           AGP_NORMAL_MEMORY))) {
 700                         ERR_MSG("cannot allocate ring buffer memory\n");
 701                         agp_backend_release(bridge);
 702                         cleanup(dinfo);
 703                         return -ENOMEM;
 704                 }
 705                 if (agp_bind_memory(dinfo->gtt_ring_mem,
 706                                     dinfo->ring.offset)) {
 707                         ERR_MSG("cannot bind ring buffer memory\n");
 708                         agp_backend_release(bridge);
 709                         cleanup(dinfo);
 710                         return -EBUSY;
 711                 }
 712                 dinfo->ring.physical = dinfo->aperture.physical
 713                         + (dinfo->ring.offset << 12);
 714                 dinfo->ring.virtual  = dinfo->aperture.virtual
 715                         + (dinfo->ring.offset << 12);
 716                 dinfo->ring_head = 0;
 717         }
 718         if (dinfo->hwcursor) {
 719                 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
 720                         : AGP_NORMAL_MEMORY;
 721                 if (!(dinfo->gtt_cursor_mem =
 722                       agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
 723                                           agp_memtype))) {
 724                         ERR_MSG("cannot allocate cursor memory\n");
 725                         agp_backend_release(bridge);
 726                         cleanup(dinfo);
 727                         return -ENOMEM;
 728                 }
 729                 if (agp_bind_memory(dinfo->gtt_cursor_mem,
 730                                     dinfo->cursor.offset)) {
 731                         ERR_MSG("cannot bind cursor memory\n");
 732                         agp_backend_release(bridge);
 733                         cleanup(dinfo);
 734                         return -EBUSY;
 735                 }
 736                 if (dinfo->mobile)
 737                         dinfo->cursor.physical
 738                                 = dinfo->gtt_cursor_mem->physical;
 739                 else
 740                         dinfo->cursor.physical = dinfo->aperture.physical
 741                                 + (dinfo->cursor.offset << 12);
 742                 dinfo->cursor.virtual = dinfo->aperture.virtual
 743                         + (dinfo->cursor.offset << 12);
 744         }
 745         if (dinfo->fbmem_gart) {
 746                 if (!(dinfo->gtt_fb_mem =
 747                       agp_allocate_memory(bridge, dinfo->fb.size >> 12,
 748                                           AGP_NORMAL_MEMORY))) {
 749                         WRN_MSG("cannot allocate framebuffer memory - use "
 750                                 "the stolen one\n");
 751                         dinfo->fbmem_gart = 0;
 752                 }
 753                 if (agp_bind_memory(dinfo->gtt_fb_mem,
 754                                     dinfo->fb.offset)) {
 755                         WRN_MSG("cannot bind framebuffer memory - use "
 756                                 "the stolen one\n");
 757                         dinfo->fbmem_gart = 0;
 758                 }
 759         }
 760
 761         /* update framebuffer memory parameters */
 762         if (!dinfo->fbmem_gart)
 763                 dinfo->fb.offset = 0;   /* starts at offset 0 */
 764         dinfo->fb.physical = dinfo->aperture.physical
 765                 + (dinfo->fb.offset << 12);
 766         dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
 767         dinfo->fb_start = dinfo->fb.offset << 12;
 768
 769         /* release agpgart */
 770         agp_backend_release(bridge);
 771
 772         if (mtrr)
 773                 set_mtrr(dinfo);
 774
 775         DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
 776                 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
 777                 dinfo->fb.virtual);
 778         DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
 779                 dinfo->mmio_base_phys, INTEL_REG_SIZE,
 780                 dinfo->mmio_base);
 781         DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
 782                 dinfo->ring.physical, dinfo->ring.size,
 783                 dinfo->ring.virtual);
 784         DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
 785                 dinfo->cursor.physical, dinfo->cursor.size,
 786                 dinfo->cursor.virtual, dinfo->cursor.offset,
 787                 dinfo->cursor.physical);
 788
 789         DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
 790                 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
 791         DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
 792
 793         if (probeonly)
 794                 bailout(dinfo);
 795
 796         /*
 797          * Check if the LVDS port or any DVO ports are enabled.  If so,
 798          * don't allow mode switching
 799          */
 800         dvo = intelfbhw_check_non_crt(dinfo);
 801         if (dvo) {
 802                 dinfo->fixed_mode = 1;
 803                 WRN_MSG("Non-CRT device is enabled ( ");
 804                 i = 0;
 805                 while (dvo) {
 806                         if (dvo & 1) {
 807                                 s = intelfbhw_dvo_to_string(1 << i);
 808                                 if (s)
 809                                         printk("%s ", s);
 810                         }
 811                         dvo >>= 1;
 812                         ++i;
 813                 }
 814                 printk(").  Disabling mode switching.\n");
 815         }
 816
 817         if (bailearly == 1)
 818                 bailout(dinfo);
 819
 820         if (FIXED_MODE(dinfo) && ORIG_VIDEO_ISVGA != VIDEO_TYPE_VLFB) {
 821                 ERR_MSG("Video mode must be programmed at boot time.\n");
 822                 cleanup(dinfo);
 823                 return -ENODEV;
 824         }
 825
 826         if (bailearly == 2)
 827                 bailout(dinfo);
 828
 829         /* Initialise dinfo and related data. */
 830         /* If an initial mode was programmed at boot time, get its details. */
 831         if (ORIG_VIDEO_ISVGA == VIDEO_TYPE_VLFB)
 832                 get_initial_mode(dinfo);
 833
 834         if (bailearly == 3)
 835                 bailout(dinfo);
 836
 837         if (FIXED_MODE(dinfo)) {
 838                 /* remap fb address */
 839                 update_dinfo(dinfo, &dinfo->initial_var);
 840         }
 841
 842         if (bailearly == 4)
 843                 bailout(dinfo);
 844
 845
 846         if (intelfb_set_fbinfo(dinfo)) {
 847                 cleanup(dinfo);
 848                 return -ENODEV;
 849         }
 850
 851         if (bailearly == 5)
 852                 bailout(dinfo);
 853
 854         if (bailearly == 6)
 855                 bailout(dinfo);
 856
 857         pci_set_drvdata(pdev, dinfo);
 858
 859         /* Save the initial register state. */
 860         i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
 861                                     bailearly > 6 ? bailearly - 6 : 0);
 862         if (i != 0) {
 863                 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
 864                 bailout(dinfo);
 865         }
 866
 867         intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
 868
 869         if (bailearly == 18)
 870                 bailout(dinfo);
 871
 872         /* Cursor initialisation */
 873         if (dinfo->hwcursor) {
 874                 intelfbhw_cursor_init(dinfo);
 875                 intelfbhw_cursor_reset(dinfo);
 876         }
 877
 878         if (bailearly == 19)
 879                 bailout(dinfo);
 880
 881         /* 2d acceleration init */
 882         if (dinfo->accel)
 883                 intelfbhw_2d_start(dinfo);
 884
 885         if (bailearly == 20)
 886                 bailout(dinfo);
 887
 888         if (noregister)
 889                 bailout(dinfo);
 890
 891         if (register_framebuffer(dinfo->info) < 0) {
 892                 ERR_MSG("Cannot register framebuffer.\n");
 893                 cleanup(dinfo);
 894                 return -ENODEV;
 895         }
 896
 897         dinfo->registered = 1;
 898         dinfo->open = 0;
 899
 900         init_waitqueue_head(&dinfo->vsync.wait);
 901         spin_lock_init(&dinfo->int_lock);
 902         dinfo->irq_flags = 0;
 903         dinfo->vsync.pan_display = 0;
 904         dinfo->vsync.pan_offset = 0;
 905
 906         return 0;
 907
 908 err_out_pixmap:
 909         fb_dealloc_cmap(&info->cmap);
 910 err_out_cmap:
 911         framebuffer_release(info);
 912         return -ENODEV;
 913 }
 914
 915 static void __devexit
 916 intelfb_pci_unregister(struct pci_dev *pdev)
 917 {
 918         struct intelfb_info *dinfo = pci_get_drvdata(pdev);
 919
 920         DBG_MSG("intelfb_pci_unregister\n");
 921
 922         if (!dinfo)
 923                 return;
 924
 925         cleanup(dinfo);
 926
 927         pci_set_drvdata(pdev, NULL);
 928 }
 929
 930 /***************************************************************
 931  *                       helper functions                      *
 932  ***************************************************************/
 933
 934 int __inline__
 935 intelfb_var_to_depth(const struct fb_var_screeninfo *var)
 936 {
 937         DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
 938                 var->bits_per_pixel, var->green.length);
 939
 940         switch (var->bits_per_pixel) {
 941         case 16:
 942                 return (var->green.length == 6) ? 16 : 15;
 943         case 32:
 944                 return 24;
 945         default:
 946                 return var->bits_per_pixel;
 947         }
 948 }
 949
 950
 951 static __inline__ int
 952 var_to_refresh(const struct fb_var_screeninfo *var)
 953 {
 954         int xtot = var->xres + var->left_margin + var->right_margin +
 955                    var->hsync_len;
 956         int ytot = var->yres + var->upper_margin + var->lower_margin +
 957                    var->vsync_len;
 958
 959         return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
 960 }
 961
 962 /***************************************************************
 963  *                Various intialisation functions              *
 964  ***************************************************************/
 965
 966 static void __devinit
 967 get_initial_mode(struct intelfb_info *dinfo)
 968 {
 969         struct fb_var_screeninfo *var;
 970         int xtot, ytot;
 971
 972         DBG_MSG("get_initial_mode\n");
 973
 974         dinfo->initial_vga = 1;
 975         dinfo->initial_fb_base = screen_info.lfb_base;
 976         dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
 977         dinfo->initial_pitch = screen_info.lfb_linelength;
 978
 979         var = &dinfo->initial_var;
 980         memset(var, 0, sizeof(*var));
 981         var->xres = screen_info.lfb_width;
 982         var->yres = screen_info.lfb_height;
 983         var->bits_per_pixel = screen_info.lfb_depth;
 984         switch (screen_info.lfb_depth) {
 985         case 15:
 986                 var->bits_per_pixel = 16;
 987                 break;
 988         case 24:
 989                 var->bits_per_pixel = 32;
 990                 break;
 991         }
 992
 993         DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
 994                 dinfo->initial_fb_base, dinfo->initial_video_ram,
 995                 BtoKB(dinfo->initial_video_ram));
 996
 997         DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
 998                 var->xres, var->yres, var->bits_per_pixel,
 999                 dinfo->initial_pitch);
1000
1001         /* Dummy timing values (assume 60Hz) */
1002         var->left_margin = (var->xres / 8) & 0xf8;
1003         var->right_margin = 32;
1004         var->upper_margin = 16;
1005         var->lower_margin = 4;
1006         var->hsync_len = (var->xres / 8) & 0xf8;
1007         var->vsync_len = 4;
1008
1009         xtot = var->xres + var->left_margin +
1010                 var->right_margin + var->hsync_len;
1011         ytot = var->yres + var->upper_margin +
1012                 var->lower_margin + var->vsync_len;
1013         var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1014
1015         var->height = -1;
1016         var->width = -1;
1017
1018         if (var->bits_per_pixel > 8) {
1019                 var->red.offset = screen_info.red_pos;
1020                 var->red.length = screen_info.red_size;
1021                 var->green.offset = screen_info.green_pos;
1022                 var->green.length = screen_info.green_size;
1023                 var->blue.offset = screen_info.blue_pos;
1024                 var->blue.length = screen_info.blue_size;
1025                 var->transp.offset = screen_info.rsvd_pos;
1026                 var->transp.length = screen_info.rsvd_size;
1027         } else {
1028                 var->red.length = 8;
1029                 var->green.length = 8;
1030                 var->blue.length = 8;
1031         }
1032 }
1033
1034 static int __devinit
1035 intelfb_init_var(struct intelfb_info *dinfo)
1036 {
1037         struct fb_var_screeninfo *var;
1038         int msrc = 0;
1039
1040         DBG_MSG("intelfb_init_var\n");
1041
1042         var = &dinfo->info->var;
1043         if (FIXED_MODE(dinfo)) {
1044                 memcpy(var, &dinfo->initial_var,
1045                        sizeof(struct fb_var_screeninfo));
1046                 msrc = 5;
1047         } else {
1048                 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1049                 u8 *edid_d = NULL;
1050
1051                 if (edid_s) {
1052                         edid_d = kmalloc(EDID_LENGTH, GFP_KERNEL);
1053
1054                         if (edid_d) {
1055                                 memcpy(edid_d, edid_s, EDID_LENGTH);
1056                                 fb_edid_to_monspecs(edid_d,
1057                                                     &dinfo->info->monspecs);
1058                                 kfree(edid_d);
1059                         }
1060                 }
1061
1062                 if (mode) {
1063                         printk("intelfb: Looking for mode in private "
1064                                "database\n");
1065                         msrc = fb_find_mode(var, dinfo->info, mode,
1066                                             dinfo->info->monspecs.modedb,
1067                                             dinfo->info->monspecs.modedb_len,
1068                                             NULL, 0);
1069
1070                         if (msrc && msrc > 1) {
1071                                 printk("intelfb: No mode in private database, "
1072                                        "intelfb: looking for mode in global "
1073                                        "database ");
1074                                 msrc = fb_find_mode(var, dinfo->info, mode,
1075                                                     NULL, 0, NULL, 0);
1076
1077                                 if (msrc)
1078                                         msrc |= 8;
1079                         }
1080
1081                 }
1082
1083                 if (!msrc) {
1084                         msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1085                                             NULL, 0, NULL, 0);
1086                 }
1087         }
1088
1089         if (!msrc) {
1090                 ERR_MSG("Cannot find a suitable video mode.\n");
1091                 return 1;
1092         }
1093
1094         INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1095                 var->bits_per_pixel, var_to_refresh(var));
1096
1097         DBG_MSG("Initial video mode is from %d.\n", msrc);
1098
1099 #if ALLOCATE_FOR_PANNING
1100         /* Allow use of half of the video ram for panning */
1101         var->xres_virtual = var->xres;
1102         var->yres_virtual =
1103                 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1104         if (var->yres_virtual < var->yres)
1105                 var->yres_virtual = var->yres;
1106 #else
1107         var->yres_virtual = var->yres;
1108 #endif
1109
1110         if (dinfo->accel)
1111                 var->accel_flags |= FB_ACCELF_TEXT;
1112         else
1113                 var->accel_flags &= ~FB_ACCELF_TEXT;
1114
1115         return 0;
1116 }
1117
1118 static int __devinit
1119 intelfb_set_fbinfo(struct intelfb_info *dinfo)
1120 {
1121         struct fb_info *info = dinfo->info;
1122
1123         DBG_MSG("intelfb_set_fbinfo\n");
1124
1125         info->flags = FBINFO_FLAG_DEFAULT;
1126         info->fbops = &intel_fb_ops;
1127         info->pseudo_palette = dinfo->pseudo_palette;
1128
1129         info->pixmap.size = 64*1024;
1130         info->pixmap.buf_align = 8;
1131         info->pixmap.access_align = 32;
1132         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1133
1134         if (intelfb_init_var(dinfo))
1135                 return 1;
1136
1137         info->pixmap.scan_align = 1;
1138         strcpy(info->fix.id, dinfo->name);
1139         info->fix.smem_start = dinfo->fb.physical;
1140         info->fix.smem_len = dinfo->fb.size;
1141         info->fix.type = FB_TYPE_PACKED_PIXELS;
1142         info->fix.type_aux = 0;
1143         info->fix.xpanstep = 8;
1144         info->fix.ypanstep = 1;
1145         info->fix.ywrapstep = 0;
1146         info->fix.mmio_start = dinfo->mmio_base_phys;
1147         info->fix.mmio_len = INTEL_REG_SIZE;
1148         info->fix.accel = FB_ACCEL_I830;
1149         update_dinfo(dinfo, &info->var);
1150
1151         return 0;
1152 }
1153
1154 /* Update dinfo to match the active video mode. */
1155 static void
1156 update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var)
1157 {
1158         DBG_MSG("update_dinfo\n");
1159
1160         dinfo->bpp = var->bits_per_pixel;
1161         dinfo->depth = intelfb_var_to_depth(var);
1162         dinfo->xres = var->xres;
1163         dinfo->yres = var->xres;
1164         dinfo->pixclock = var->pixclock;
1165
1166         dinfo->info->fix.visual = dinfo->visual;
1167         dinfo->info->fix.line_length = dinfo->pitch;
1168
1169         switch (dinfo->bpp) {
1170         case 8:
1171                 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1172                 dinfo->pitch = var->xres_virtual;
1173                 break;
1174         case 16:
1175                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1176                 dinfo->pitch = var->xres_virtual * 2;
1177                 break;
1178         case 32:
1179                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1180                 dinfo->pitch = var->xres_virtual * 4;
1181                 break;
1182         }
1183
1184         /* Make sure the line length is a aligned correctly. */
1185         if (IS_I9XX(dinfo))
1186                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1187         else
1188                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1189
1190         if (FIXED_MODE(dinfo))
1191                 dinfo->pitch = dinfo->initial_pitch;
1192
1193         dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1194         dinfo->info->fix.line_length = dinfo->pitch;
1195         dinfo->info->fix.visual = dinfo->visual;
1196 }
1197
1198 /* fbops functions */
1199
1200 /***************************************************************
1201  *                       fbdev interface                       *
1202  ***************************************************************/
1203
1204 static int
1205 intelfb_open(struct fb_info *info, int user)
1206 {
1207         struct intelfb_info *dinfo = GET_DINFO(info);
1208
1209         if (user) {
1210                 dinfo->open++;
1211         }
1212
1213         return 0;
1214 }
1215
1216 static int
1217 intelfb_release(struct fb_info *info, int user)
1218 {
1219         struct intelfb_info *dinfo = GET_DINFO(info);
1220
1221         if (user) {
1222                 dinfo->open--;
1223                 msleep(1);
1224                 if (!dinfo->open) {
1225                         intelfbhw_disable_irq(dinfo);
1226                 }
1227         }
1228
1229         return 0;
1230 }
1231
1232 static int
1233 intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1234 {
1235         int change_var = 0;
1236         struct fb_var_screeninfo v;
1237         struct intelfb_info *dinfo;
1238         static int first = 1;
1239         int i;
1240         /* Good pitches to allow tiling.  Don't care about pitches < 1024. */
1241         static const int pitches[] = {
1242                 128 * 8,
1243                 128 * 16,
1244                 128 * 32,
1245                 128 * 64,
1246                 0
1247         };
1248
1249         DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1250
1251         dinfo = GET_DINFO(info);
1252
1253         /* update the pitch */
1254         if (intelfbhw_validate_mode(dinfo, var) != 0)
1255                 return -EINVAL;
1256
1257         v = *var;
1258
1259         for (i = 0; pitches[i] != 0; i++) {
1260                 if (pitches[i] >= v.xres_virtual) {
1261                         v.xres_virtual = pitches[i];
1262                         break;
1263                 }
1264         }
1265
1266         /* Check for a supported bpp. */
1267         if (v.bits_per_pixel <= 8) {
1268                 v.bits_per_pixel = 8;
1269         } else if (v.bits_per_pixel <= 16) {
1270                 if (v.bits_per_pixel == 16)
1271                         v.green.length = 6;
1272                 v.bits_per_pixel = 16;
1273         } else if (v.bits_per_pixel <= 32) {
1274                 v.bits_per_pixel = 32;
1275         } else
1276                 return -EINVAL;
1277
1278         change_var = ((info->var.xres != var->xres) ||
1279                       (info->var.yres != var->yres) ||
1280                       (info->var.xres_virtual != var->xres_virtual) ||
1281                       (info->var.yres_virtual != var->yres_virtual) ||
1282                       (info->var.bits_per_pixel != var->bits_per_pixel) ||
1283                       memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1284                       memcmp(&info->var.green, &var->green,
1285                              sizeof(var->green)) ||
1286                       memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1287
1288         if (FIXED_MODE(dinfo) &&
1289             (change_var ||
1290              var->yres_virtual > dinfo->initial_var.yres_virtual ||
1291              var->yres_virtual < dinfo->initial_var.yres ||
1292              var->xoffset || var->nonstd)) {
1293                 if (first) {
1294                         ERR_MSG("Changing the video mode is not supported.\n");
1295                         first = 0;
1296                 }
1297                 return -EINVAL;
1298         }
1299
1300         switch (intelfb_var_to_depth(&v)) {
1301         case 8:
1302                 v.red.offset = v.green.offset = v.blue.offset = 0;
1303                 v.red.length = v.green.length = v.blue.length = 8;
1304                 v.transp.offset = v.transp.length = 0;
1305                 break;
1306         case 15:
1307                 v.red.offset = 10;
1308                 v.green.offset = 5;
1309                 v.blue.offset = 0;
1310                 v.red.length = v.green.length = v.blue.length = 5;
1311                 v.transp.offset = v.transp.length = 0;
1312                 break;
1313         case 16:
1314                 v.red.offset = 11;
1315                 v.green.offset = 5;
1316                 v.blue.offset = 0;
1317                 v.red.length = 5;
1318                 v.green.length = 6;
1319                 v.blue.length = 5;
1320                 v.transp.offset = v.transp.length = 0;
1321                 break;
1322         case 24:
1323                 v.red.offset = 16;
1324                 v.green.offset = 8;
1325                 v.blue.offset = 0;
1326                 v.red.length = v.green.length = v.blue.length = 8;
1327                 v.transp.offset = v.transp.length = 0;
1328                 break;
1329         case 32:
1330                 v.red.offset = 16;
1331                 v.green.offset = 8;
1332                 v.blue.offset = 0;
1333                 v.red.length = v.green.length = v.blue.length = 8;
1334                 v.transp.offset = 24;
1335                 v.transp.length = 8;
1336                 break;
1337         }
1338
1339         if (v.xoffset < 0)
1340                 v.xoffset = 0;
1341         if (v.yoffset < 0)
1342                 v.yoffset = 0;
1343
1344         if (v.xoffset > v.xres_virtual - v.xres)
1345                 v.xoffset = v.xres_virtual - v.xres;
1346         if (v.yoffset > v.yres_virtual - v.yres)
1347                 v.yoffset = v.yres_virtual - v.yres;
1348
1349         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1350                           v.transp.msb_right = 0;
1351
1352         *var = v;
1353
1354         return 0;
1355 }
1356
1357 static int
1358 intelfb_set_par(struct fb_info *info)
1359 {
1360         struct intelfb_hwstate *hw;
1361         struct intelfb_info *dinfo = GET_DINFO(info);
1362
1363         if (FIXED_MODE(dinfo)) {
1364                 ERR_MSG("Changing the video mode is not supported.\n");
1365                 return -EINVAL;
1366         }
1367
1368         hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1369         if (!hw)
1370                 return -ENOMEM;
1371
1372         DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1373                 info->var.yres, info->var.bits_per_pixel);
1374
1375         intelfb_blank(FB_BLANK_POWERDOWN, info);
1376
1377         if (ACCEL(dinfo, info))
1378                 intelfbhw_2d_stop(dinfo);
1379
1380         memcpy(hw, &dinfo->save_state, sizeof(*hw));
1381         if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1382                 goto invalid_mode;
1383         if (intelfbhw_program_mode(dinfo, hw, 0))
1384                 goto invalid_mode;
1385
1386 #if REGDUMP > 0
1387         intelfbhw_read_hw_state(dinfo, hw, 0);
1388         intelfbhw_print_hw_state(dinfo, hw);
1389 #endif
1390
1391         update_dinfo(dinfo, &info->var);
1392
1393         if (ACCEL(dinfo, info))
1394                 intelfbhw_2d_start(dinfo);
1395
1396         intelfb_pan_display(&info->var, info);
1397
1398         intelfb_blank(FB_BLANK_UNBLANK, info);
1399
1400         if (ACCEL(dinfo, info)) {
1401                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1402                 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1403                 FBINFO_HWACCEL_IMAGEBLIT;
1404         } else {
1405                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1406         }
1407         kfree(hw);
1408         return 0;
1409 invalid_mode:
1410         kfree(hw);
1411         return -EINVAL;
1412 }
1413
1414 static int
1415 intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1416                   unsigned blue, unsigned transp, struct fb_info *info)
1417 {
1418         struct intelfb_info *dinfo = GET_DINFO(info);
1419
1420 #if VERBOSE > 0
1421         DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1422 #endif
1423
1424         if (regno > 255)
1425                 return 1;
1426
1427         if (dinfo->depth == 8) {
1428                 red >>= 8;
1429                 green >>= 8;
1430                 blue >>= 8;
1431
1432                 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1433                                     transp);
1434         }
1435
1436         if (regno < 16) {
1437                 switch (dinfo->depth) {
1438                 case 15:
1439                         dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1440                                 ((green & 0xf800) >>  6) |
1441                                 ((blue & 0xf800) >> 11);
1442                         break;
1443                 case 16:
1444                         dinfo->pseudo_palette[regno] = (red & 0xf800) |
1445                                 ((green & 0xfc00) >>  5) |
1446                                 ((blue  & 0xf800) >> 11);
1447                         break;
1448                 case 24:
1449                         dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1450                                 (green & 0xff00) |
1451                                 ((blue  & 0xff00) >> 8);
1452                         break;
1453                 }
1454         }
1455
1456         return 0;
1457 }
1458
1459 static int
1460 intelfb_blank(int blank, struct fb_info *info)
1461 {
1462         intelfbhw_do_blank(blank, info);
1463         return 0;
1464 }
1465
1466 static int
1467 intelfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1468 {
1469         intelfbhw_pan_display(var, info);
1470         return 0;
1471 }
1472
1473 /* When/if we have our own ioctls. */
1474 static int
1475 intelfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
1476 {
1477         int retval = 0;
1478         struct intelfb_info *dinfo = GET_DINFO(info);
1479         u32 pipe = 0;
1480
1481         switch (cmd) {
1482                 case FBIO_WAITFORVSYNC:
1483                         if (get_user(pipe, (__u32 __user *)arg))
1484                                 return -EFAULT;
1485
1486                         retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1487                         break;
1488                 default:
1489                         break;
1490         }
1491
1492         return retval;
1493 }
1494
1495 static void
1496 intelfb_fillrect (struct fb_info *info, const struct fb_fillrect *rect)
1497 {
1498         struct intelfb_info *dinfo = GET_DINFO(info);
1499         u32 rop, color;
1500
1501 #if VERBOSE > 0
1502         DBG_MSG("intelfb_fillrect\n");
1503 #endif
1504
1505         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1506                 return cfb_fillrect(info, rect);
1507
1508         if (rect->rop == ROP_COPY)
1509                 rop = PAT_ROP_GXCOPY;
1510         else // ROP_XOR
1511                 rop = PAT_ROP_GXXOR;
1512
1513         if (dinfo->depth != 8)
1514                 color = dinfo->pseudo_palette[rect->color];
1515         else
1516                 color = rect->color;
1517
1518         intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1519                               rect->width, rect->height, color,
1520                               dinfo->pitch, info->var.bits_per_pixel,
1521                               rop);
1522 }
1523
1524 static void
1525 intelfb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
1526 {
1527         struct intelfb_info *dinfo = GET_DINFO(info);
1528
1529 #if VERBOSE > 0
1530         DBG_MSG("intelfb_copyarea\n");
1531 #endif
1532
1533         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1534                 return cfb_copyarea(info, region);
1535
1536         intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1537                             region->dy, region->width, region->height,
1538                             dinfo->pitch, info->var.bits_per_pixel);
1539 }
1540
1541 static void
1542 intelfb_imageblit(struct fb_info *info, const struct fb_image *image)
1543 {
1544         struct intelfb_info *dinfo = GET_DINFO(info);
1545         u32 fgcolor, bgcolor;
1546
1547 #if VERBOSE > 0
1548         DBG_MSG("intelfb_imageblit\n");
1549 #endif
1550
1551         if (!ACCEL(dinfo, info) || dinfo->depth == 4
1552             || image->depth != 1)
1553                 return cfb_imageblit(info, image);
1554
1555         if (dinfo->depth != 8) {
1556                 fgcolor = dinfo->pseudo_palette[image->fg_color];
1557                 bgcolor = dinfo->pseudo_palette[image->bg_color];
1558         } else {
1559                 fgcolor = image->fg_color;
1560                 bgcolor = image->bg_color;
1561         }
1562
1563         if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1564                                     image->height, image->data,
1565                                     image->dx, image->dy,
1566                                     dinfo->pitch, info->var.bits_per_pixel))
1567                 return cfb_imageblit(info, image);
1568 }
1569
1570 static int
1571 intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1572 {
1573         struct intelfb_info *dinfo = GET_DINFO(info);
1574         u32 physical;
1575 #if VERBOSE > 0
1576         DBG_MSG("intelfb_cursor\n");
1577 #endif
1578
1579         if (!dinfo->hwcursor)
1580                 return -ENODEV;
1581
1582         intelfbhw_cursor_hide(dinfo);
1583
1584         /* If XFree killed the cursor - restore it */
1585         physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1586                    (dinfo->cursor.offset << 12);
1587
1588         if (INREG(CURSOR_A_BASEADDR) != physical) {
1589                 u32 fg, bg;
1590
1591                 DBG_MSG("the cursor was killed - restore it !!\n");
1592                 DBG_MSG("size %d, %d   pos %d, %d\n",
1593                         cursor->image.width, cursor->image.height,
1594                         cursor->image.dx, cursor->image.dy);
1595
1596                 intelfbhw_cursor_init(dinfo);
1597                 intelfbhw_cursor_reset(dinfo);
1598                 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1599                                         cursor->image.dy);
1600
1601                 if (dinfo->depth != 8) {
1602                         fg =dinfo->pseudo_palette[cursor->image.fg_color];
1603                         bg =dinfo->pseudo_palette[cursor->image.bg_color];
1604                 } else {
1605                         fg = cursor->image.fg_color;
1606                         bg = cursor->image.bg_color;
1607                 }
1608                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1609                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1610                                       cursor->image.height,
1611                                       dinfo->cursor_src);
1612
1613                 if (cursor->enable)
1614                         intelfbhw_cursor_show(dinfo);
1615                 return 0;
1616         }
1617
1618         if (cursor->set & FB_CUR_SETPOS) {
1619                 u32 dx, dy;
1620
1621                 dx = cursor->image.dx - info->var.xoffset;
1622                 dy = cursor->image.dy - info->var.yoffset;
1623
1624                 intelfbhw_cursor_setpos(dinfo, dx, dy);
1625         }
1626
1627         if (cursor->set & FB_CUR_SETSIZE) {
1628                 if (cursor->image.width > 64 || cursor->image.height > 64)
1629                         return -ENXIO;
1630
1631                 intelfbhw_cursor_reset(dinfo);
1632         }
1633
1634         if (cursor->set & FB_CUR_SETCMAP) {
1635                 u32 fg, bg;
1636
1637                 if (dinfo->depth != 8) {
1638                         fg = dinfo->pseudo_palette[cursor->image.fg_color];
1639                         bg = dinfo->pseudo_palette[cursor->image.bg_color];
1640                 } else {
1641                         fg = cursor->image.fg_color;
1642                         bg = cursor->image.bg_color;
1643                 }
1644
1645                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1646         }
1647
1648         if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1649                 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1650                 u32 size = s_pitch * cursor->image.height;
1651                 u8 *dat = (u8 *) cursor->image.data;
1652                 u8 *msk = (u8 *) cursor->mask;
1653                 u8 src[64];
1654                 u32 i;
1655
1656                 if (cursor->image.depth != 1)
1657                         return -ENXIO;
1658
1659                 switch (cursor->rop) {
1660                 case ROP_XOR:
1661                         for (i = 0; i < size; i++)
1662                                 src[i] = dat[i] ^ msk[i];
1663                         break;
1664                 case ROP_COPY:
1665                 default:
1666                         for (i = 0; i < size; i++)
1667                                 src[i] = dat[i] & msk[i];
1668                         break;
1669                 }
1670
1671                 /* save the bitmap to restore it when XFree will
1672                    make the cursor dirty */
1673                 memcpy(dinfo->cursor_src, src, size);
1674
1675                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1676                                       cursor->image.height, src);
1677         }
1678
1679         if (cursor->enable)
1680                 intelfbhw_cursor_show(dinfo);
1681
1682         return 0;
1683 }
1684
1685 static int
1686 intelfb_sync(struct fb_info *info)
1687 {
1688         struct intelfb_info *dinfo = GET_DINFO(info);
1689
1690 #if VERBOSE > 0
1691         DBG_MSG("intelfb_sync\n");
1692 #endif
1693
1694         if (dinfo->ring_lockup)
1695                 return 0;
1696
1697         intelfbhw_do_sync(dinfo);
1698         return 0;
1699 }
1700