drivers/video/fbdev/intelfb/intelfbdrv.c

   1 /*
   2  * intelfb
   3  *
   4  * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM/
   5  * 945G/945GM/945GME/965G/965GM 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  *    04/2008 - Version 0.9.5
 104  *              Add support for 965G/965GM. (Maik Broemme <mbroemme@plusserver.de>)
 105  *
 106  *    08/2008 - Version 0.9.6
 107  *              Add support for 945GME. (Phil Endecott <spam_from_intelfb@chezphil.org>)
 108  */
 109
 110 #include <linux/module.h>
 111 #include <linux/kernel.h>
 112 #include <linux/errno.h>
 113 #include <linux/string.h>
 114 #include <linux/mm.h>
 115 #include <linux/slab.h>
 116 #include <linux/delay.h>
 117 #include <linux/fb.h>
 118 #include <linux/ioport.h>
 119 #include <linux/init.h>
 120 #include <linux/pci.h>
 121 #include <linux/vmalloc.h>
 122 #include <linux/pagemap.h>
 123 #include <linux/screen_info.h>
 124
 125 #include <asm/io.h>
 126
 127 #include "intelfb.h"
 128 #include "intelfbhw.h"
 129 #include "../edid.h"
 130
 131 static void get_initial_mode(struct intelfb_info *dinfo);
 132 static void update_dinfo(struct intelfb_info *dinfo,
 133                          struct fb_var_screeninfo *var);
 134 static int intelfb_open(struct fb_info *info, int user);
 135 static int intelfb_release(struct fb_info *info, int user);
 136 static int intelfb_check_var(struct fb_var_screeninfo *var,
 137                              struct fb_info *info);
 138 static int intelfb_set_par(struct fb_info *info);
 139 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 140                              unsigned blue, unsigned transp,
 141                              struct fb_info *info);
 142
 143 static int intelfb_blank(int blank, struct fb_info *info);
 144 static int intelfb_pan_display(struct fb_var_screeninfo *var,
 145                                struct fb_info *info);
 146
 147 static void intelfb_fillrect(struct fb_info *info,
 148                              const struct fb_fillrect *rect);
 149 static void intelfb_copyarea(struct fb_info *info,
 150                              const struct fb_copyarea *region);
 151 static void intelfb_imageblit(struct fb_info *info,
 152                               const struct fb_image *image);
 153 static int intelfb_cursor(struct fb_info *info,
 154                            struct fb_cursor *cursor);
 155
 156 static int intelfb_sync(struct fb_info *info);
 157
 158 static int intelfb_ioctl(struct fb_info *info,
 159                          unsigned int cmd, unsigned long arg);
 160
 161 static int intelfb_pci_register(struct pci_dev *pdev,
 162                                 const struct pci_device_id *ent);
 163 static void intelfb_pci_unregister(struct pci_dev *pdev);
 164 static int intelfb_set_fbinfo(struct intelfb_info *dinfo);
 165
 166 /*
 167  * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
 168  * mobile chipsets from being registered.
 169  */
 170 #if DETECT_VGA_CLASS_ONLY
 171 #define INTELFB_CLASS_MASK ~0 << 8
 172 #else
 173 #define INTELFB_CLASS_MASK 0
 174 #endif
 175
 176 static const struct pci_device_id intelfb_pci_table[] = {
 177         { 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 },
 178         { 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 },
 179         { 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 },
 180         { 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 },
 181         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_854, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_854 },
 182         { 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 },
 183         { 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 },
 184         { 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 },
 185         { 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 },
 186         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GME, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GME },
 187         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_965G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965G },
 188         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_965GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965GM },
 189         { 0, }
 190 };
 191
 192 /* Global data */
 193 static int num_registered = 0;
 194
 195 /* fb ops */
 196 static const struct fb_ops intel_fb_ops = {
 197         .owner =                THIS_MODULE,
 198         .fb_open =              intelfb_open,
 199         .fb_release =           intelfb_release,
 200         .fb_check_var =         intelfb_check_var,
 201         .fb_set_par =           intelfb_set_par,
 202         .fb_setcolreg =         intelfb_setcolreg,
 203         .fb_blank =             intelfb_blank,
 204         .fb_pan_display =       intelfb_pan_display,
 205         .fb_fillrect  =         intelfb_fillrect,
 206         .fb_copyarea  =         intelfb_copyarea,
 207         .fb_imageblit =         intelfb_imageblit,
 208         .fb_cursor =            intelfb_cursor,
 209         .fb_sync =              intelfb_sync,
 210         .fb_ioctl =             intelfb_ioctl
 211 };
 212
 213 /* PCI driver module table */
 214 static struct pci_driver intelfb_driver = {
 215         .name =         "intelfb",
 216         .id_table =     intelfb_pci_table,
 217         .probe =        intelfb_pci_register,
 218         .remove =       intelfb_pci_unregister,
 219 };
 220
 221 /* Module description/parameters */
 222 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
 223               "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
 224 MODULE_DESCRIPTION("Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS
 225                    " chipsets");
 226 MODULE_LICENSE("Dual BSD/GPL");
 227 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
 228
 229 static bool accel       = 1;
 230 static int vram         = 4;
 231 static bool hwcursor    = 0;
 232 static bool mtrr        = 1;
 233 static bool fixed       = 0;
 234 static bool noinit      = 0;
 235 static bool noregister  = 0;
 236 static bool probeonly   = 0;
 237 static bool idonly      = 0;
 238 static int bailearly    = 0;
 239 static int voffset      = 48;
 240 static char *mode       = NULL;
 241
 242 module_param(accel, bool, S_IRUGO);
 243 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
 244 module_param(vram, int, S_IRUGO);
 245 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
 246 module_param(voffset, int, S_IRUGO);
 247 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
 248 module_param(hwcursor, bool, S_IRUGO);
 249 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
 250 module_param(mtrr, bool, S_IRUGO);
 251 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
 252 module_param(fixed, bool, S_IRUGO);
 253 MODULE_PARM_DESC(fixed, "Disable mode switching");
 254 module_param(noinit, bool, 0);
 255 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
 256 module_param(noregister, bool, 0);
 257 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
 258 module_param(probeonly, bool, 0);
 259 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
 260 module_param(idonly, bool, 0);
 261 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
 262 module_param(bailearly, int, 0);
 263 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
 264 module_param(mode, charp, S_IRUGO);
 265 MODULE_PARM_DESC(mode,
 266                  "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
 267
 268 #ifndef MODULE
 269 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
 270 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
 271 #define OPT_STRVAL(opt, name) (opt + strlen(name))
 272
 273 static __inline__ char * get_opt_string(const char *this_opt, const char *name)
 274 {
 275         const char *p;
 276         int i;
 277         char *ret;
 278
 279         p = OPT_STRVAL(this_opt, name);
 280         i = 0;
 281         while (p[i] && p[i] != ' ' && p[i] != ',')
 282                 i++;
 283         ret = kmalloc(i + 1, GFP_KERNEL);
 284         if (ret) {
 285                 strncpy(ret, p, i);
 286                 ret[i] = '\0';
 287         }
 288         return ret;
 289 }
 290
 291 static __inline__ int get_opt_int(const char *this_opt, const char *name,
 292                                   int *ret)
 293 {
 294         if (!ret)
 295                 return 0;
 296
 297         if (!OPT_EQUAL(this_opt, name))
 298                 return 0;
 299
 300         *ret = OPT_INTVAL(this_opt, name);
 301         return 1;
 302 }
 303
 304 static __inline__ int get_opt_bool(const char *this_opt, const char *name,
 305                                    bool *ret)
 306 {
 307         if (!ret)
 308                 return 0;
 309
 310         if (OPT_EQUAL(this_opt, name)) {
 311                 if (this_opt[strlen(name)] == '=')
 312                         *ret = simple_strtoul(this_opt + strlen(name) + 1,
 313                                               NULL, 0);
 314                 else
 315                         *ret = 1;
 316         } else {
 317                 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
 318                         *ret = 0;
 319                 else
 320                         return 0;
 321         }
 322         return 1;
 323 }
 324
 325 static int __init intelfb_setup(char *options)
 326 {
 327         char *this_opt;
 328
 329         DBG_MSG("intelfb_setup\n");
 330
 331         if (!options || !*options) {
 332                 DBG_MSG("no options\n");
 333                 return 0;
 334         } else
 335                 DBG_MSG("options: %s\n", options);
 336
 337         /*
 338          * These are the built-in options analogous to the module parameters
 339          * defined above.
 340          *
 341          * The syntax is:
 342          *
 343          *    video=intelfb:[mode][,<param>=<val>] ...
 344          *
 345          * e.g.,
 346          *
 347          *    video=intelfb:1024x768-16@75,accel=0
 348          */
 349
 350         while ((this_opt = strsep(&options, ","))) {
 351                 if (!*this_opt)
 352                         continue;
 353                 if (get_opt_bool(this_opt, "accel", &accel))
 354                         ;
 355                 else if (get_opt_int(this_opt, "vram", &vram))
 356                         ;
 357                 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
 358                         ;
 359                 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
 360                         ;
 361                 else if (get_opt_bool(this_opt, "fixed", &fixed))
 362                         ;
 363                 else if (get_opt_bool(this_opt, "init", &noinit))
 364                         noinit = !noinit;
 365                 else if (OPT_EQUAL(this_opt, "mode="))
 366                         mode = get_opt_string(this_opt, "mode=");
 367                 else
 368                         mode = this_opt;
 369         }
 370
 371         return 0;
 372 }
 373
 374 #endif
 375
 376 static int __init intelfb_init(void)
 377 {
 378 #ifndef MODULE
 379         char *option = NULL;
 380 #endif
 381
 382         DBG_MSG("intelfb_init\n");
 383
 384         INF_MSG("Framebuffer driver for "
 385                 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
 386         INF_MSG("Version " INTELFB_VERSION "\n");
 387
 388         if (idonly)
 389                 return -ENODEV;
 390
 391 #ifndef MODULE
 392         if (fb_get_options("intelfb", &option))
 393                 return -ENODEV;
 394         intelfb_setup(option);
 395 #endif
 396
 397         return pci_register_driver(&intelfb_driver);
 398 }
 399
 400 static void __exit intelfb_exit(void)
 401 {
 402         DBG_MSG("intelfb_exit\n");
 403         pci_unregister_driver(&intelfb_driver);
 404 }
 405
 406 module_init(intelfb_init);
 407 module_exit(intelfb_exit);
 408
 409 /***************************************************************
 410  *                        driver init / cleanup                *
 411  ***************************************************************/
 412
 413 static void cleanup(struct intelfb_info *dinfo)
 414 {
 415         DBG_MSG("cleanup\n");
 416
 417         if (!dinfo)
 418                 return;
 419
 420         intelfbhw_disable_irq(dinfo);
 421
 422         fb_dealloc_cmap(&dinfo->info->cmap);
 423         kfree(dinfo->info->pixmap.addr);
 424
 425         if (dinfo->registered)
 426                 unregister_framebuffer(dinfo->info);
 427
 428         arch_phys_wc_del(dinfo->wc_cookie);
 429
 430         if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
 431                 agp_unbind_memory(dinfo->gtt_fb_mem);
 432                 agp_free_memory(dinfo->gtt_fb_mem);
 433         }
 434         if (dinfo->gtt_cursor_mem) {
 435                 agp_unbind_memory(dinfo->gtt_cursor_mem);
 436                 agp_free_memory(dinfo->gtt_cursor_mem);
 437         }
 438         if (dinfo->gtt_ring_mem) {
 439                 agp_unbind_memory(dinfo->gtt_ring_mem);
 440                 agp_free_memory(dinfo->gtt_ring_mem);
 441         }
 442
 443 #ifdef CONFIG_FB_INTEL_I2C
 444         /* un-register I2C bus */
 445         intelfb_delete_i2c_busses(dinfo);
 446 #endif
 447
 448         if (dinfo->mmio_base)
 449                 iounmap((void __iomem *)dinfo->mmio_base);
 450         if (dinfo->aperture.virtual)
 451                 iounmap((void __iomem *)dinfo->aperture.virtual);
 452
 453         if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
 454                 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
 455         if (dinfo->flag & INTELFB_FB_ACQUIRED)
 456                 release_mem_region(dinfo->aperture.physical,
 457                                    dinfo->aperture.size);
 458         framebuffer_release(dinfo->info);
 459 }
 460
 461 #define bailout(dinfo) do {                                             \
 462         DBG_MSG("bailout\n");                                           \
 463         cleanup(dinfo);                                                 \
 464         INF_MSG("Not going to register framebuffer, exiting...\n");     \
 465         return -ENODEV;                                                 \
 466 } while (0)
 467
 468
 469 static int intelfb_pci_register(struct pci_dev *pdev,
 470                                 const struct pci_device_id *ent)
 471 {
 472         struct fb_info *info;
 473         struct intelfb_info *dinfo;
 474         int i, err, dvo;
 475         int aperture_size, stolen_size;
 476         struct agp_kern_info gtt_info;
 477         int agp_memtype;
 478         const char *s;
 479         struct agp_bridge_data *bridge;
 480         int aperture_bar = 0;
 481         int mmio_bar = 1;
 482         int offset;
 483
 484         DBG_MSG("intelfb_pci_register\n");
 485
 486         num_registered++;
 487         if (num_registered != 1) {
 488                 ERR_MSG("Attempted to register %d devices "
 489                         "(should be only 1).\n", num_registered);
 490                 return -ENODEV;
 491         }
 492
 493         info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
 494         if (!info)
 495                 return -ENOMEM;
 496
 497         if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
 498                 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
 499                 goto err_out_cmap;
 500         }
 501
 502         dinfo = info->par;
 503         dinfo->info  = info;
 504         dinfo->fbops = &intel_fb_ops;
 505         dinfo->pdev  = pdev;
 506
 507         /* Reserve pixmap space. */
 508         info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
 509         if (info->pixmap.addr == NULL) {
 510                 ERR_MSG("Cannot reserve pixmap memory.\n");
 511                 goto err_out_pixmap;
 512         }
 513
 514         /* set early this option because it could be changed by tv encoder
 515            driver */
 516         dinfo->fixed_mode = fixed;
 517
 518         /* Enable device. */
 519         if ((err = pci_enable_device(pdev))) {
 520                 ERR_MSG("Cannot enable device.\n");
 521                 cleanup(dinfo);
 522                 return -ENODEV;
 523         }
 524
 525         /* Set base addresses. */
 526         if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
 527             (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
 528             (ent->device == PCI_DEVICE_ID_INTEL_945G)  ||
 529             (ent->device == PCI_DEVICE_ID_INTEL_945GM) ||
 530             (ent->device == PCI_DEVICE_ID_INTEL_945GME) ||
 531             (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
 532             (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
 533
 534                 aperture_bar = 2;
 535                 mmio_bar = 0;
 536         }
 537         dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
 538         dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
 539         dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
 540         DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
 541                 (unsigned long long)pci_resource_start(pdev, aperture_bar),
 542                 (unsigned long long)pci_resource_len(pdev, aperture_bar),
 543                 (unsigned long long)pci_resource_start(pdev, mmio_bar),
 544                 (unsigned long long)pci_resource_len(pdev, mmio_bar));
 545
 546         /* Reserve the fb and MMIO regions */
 547         if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
 548                                 INTELFB_MODULE_NAME)) {
 549                 ERR_MSG("Cannot reserve FB region.\n");
 550                 cleanup(dinfo);
 551                 return -ENODEV;
 552         }
 553
 554         dinfo->flag |= INTELFB_FB_ACQUIRED;
 555
 556         if (!request_mem_region(dinfo->mmio_base_phys,
 557                                 INTEL_REG_SIZE,
 558                                 INTELFB_MODULE_NAME)) {
 559                 ERR_MSG("Cannot reserve MMIO region.\n");
 560                 cleanup(dinfo);
 561                 return -ENODEV;
 562         }
 563
 564         dinfo->flag |= INTELFB_MMIO_ACQUIRED;
 565
 566         /* Get the chipset info. */
 567         dinfo->pci_chipset = pdev->device;
 568
 569         if (intelfbhw_get_chipset(pdev, dinfo)) {
 570                 cleanup(dinfo);
 571                 return -ENODEV;
 572         }
 573
 574         if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
 575                 cleanup(dinfo);
 576                 return -ENODEV;
 577         }
 578
 579         INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
 580                 "stolen memory %dkB\n",
 581                 pdev->bus->number, PCI_SLOT(pdev->devfn),
 582                 PCI_FUNC(pdev->devfn), dinfo->name,
 583                 BtoMB(aperture_size), BtoKB(stolen_size));
 584
 585         /* Set these from the options. */
 586         dinfo->accel    = accel;
 587         dinfo->hwcursor = hwcursor;
 588
 589         if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
 590                 INF_MSG("Acceleration is not supported for the %s chipset.\n",
 591                         dinfo->name);
 592                 dinfo->accel = 0;
 593         }
 594
 595         /* Framebuffer parameters - Use all the stolen memory if >= vram */
 596         if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
 597                 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
 598                 dinfo->fbmem_gart = 0;
 599         } else {
 600                 dinfo->fb.size =  MB(vram);
 601                 dinfo->fbmem_gart = 1;
 602         }
 603
 604         /* Allocate space for the ring buffer and HW cursor if enabled. */
 605         if (dinfo->accel) {
 606                 dinfo->ring.size = RINGBUFFER_SIZE;
 607                 dinfo->ring_tail_mask = dinfo->ring.size - 1;
 608         }
 609         if (dinfo->hwcursor)
 610                 dinfo->cursor.size = HW_CURSOR_SIZE;
 611
 612         /* Use agpgart to manage the GATT */
 613         if (!(bridge = agp_backend_acquire(pdev))) {
 614                 ERR_MSG("cannot acquire agp\n");
 615                 cleanup(dinfo);
 616                 return -ENODEV;
 617         }
 618
 619         /* get the current gatt info */
 620         if (agp_copy_info(bridge, &gtt_info)) {
 621                 ERR_MSG("cannot get agp info\n");
 622                 agp_backend_release(bridge);
 623                 cleanup(dinfo);
 624                 return -ENODEV;
 625         }
 626
 627         if (MB(voffset) < stolen_size)
 628                 offset = (stolen_size >> 12);
 629         else
 630                 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
 631
 632         /* set the mem offsets - set them after the already used pages */
 633         if (dinfo->accel)
 634                 dinfo->ring.offset = offset + gtt_info.current_memory;
 635         if (dinfo->hwcursor)
 636                 dinfo->cursor.offset = offset +
 637                         + gtt_info.current_memory + (dinfo->ring.size >> 12);
 638         if (dinfo->fbmem_gart)
 639                 dinfo->fb.offset = offset +
 640                         + gtt_info.current_memory + (dinfo->ring.size >> 12)
 641                         + (dinfo->cursor.size >> 12);
 642
 643         /* Allocate memories (which aren't stolen) */
 644         /* Map the fb and MMIO regions */
 645         /* ioremap only up to the end of used aperture */
 646         dinfo->aperture.virtual = (u8 __iomem *)ioremap_wc
 647                 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
 648                  + dinfo->fb.size);
 649         if (!dinfo->aperture.virtual) {
 650                 ERR_MSG("Cannot remap FB region.\n");
 651                 agp_backend_release(bridge);
 652                 cleanup(dinfo);
 653                 return -ENODEV;
 654         }
 655
 656         dinfo->mmio_base =
 657                 (u8 __iomem *)ioremap(dinfo->mmio_base_phys,
 658                                               INTEL_REG_SIZE);
 659         if (!dinfo->mmio_base) {
 660                 ERR_MSG("Cannot remap MMIO region.\n");
 661                 agp_backend_release(bridge);
 662                 cleanup(dinfo);
 663                 return -ENODEV;
 664         }
 665
 666         if (dinfo->accel) {
 667                 if (!(dinfo->gtt_ring_mem =
 668                       agp_allocate_memory(bridge, dinfo->ring.size >> 12,
 669                                           AGP_NORMAL_MEMORY))) {
 670                         ERR_MSG("cannot allocate ring buffer memory\n");
 671                         agp_backend_release(bridge);
 672                         cleanup(dinfo);
 673                         return -ENOMEM;
 674                 }
 675                 if (agp_bind_memory(dinfo->gtt_ring_mem,
 676                                     dinfo->ring.offset)) {
 677                         ERR_MSG("cannot bind ring buffer memory\n");
 678                         agp_backend_release(bridge);
 679                         cleanup(dinfo);
 680                         return -EBUSY;
 681                 }
 682                 dinfo->ring.physical = dinfo->aperture.physical
 683                         + (dinfo->ring.offset << 12);
 684                 dinfo->ring.virtual  = dinfo->aperture.virtual
 685                         + (dinfo->ring.offset << 12);
 686                 dinfo->ring_head = 0;
 687         }
 688         if (dinfo->hwcursor) {
 689                 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
 690                         : AGP_NORMAL_MEMORY;
 691                 if (!(dinfo->gtt_cursor_mem =
 692                       agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
 693                                           agp_memtype))) {
 694                         ERR_MSG("cannot allocate cursor memory\n");
 695                         agp_backend_release(bridge);
 696                         cleanup(dinfo);
 697                         return -ENOMEM;
 698                 }
 699                 if (agp_bind_memory(dinfo->gtt_cursor_mem,
 700                                     dinfo->cursor.offset)) {
 701                         ERR_MSG("cannot bind cursor memory\n");
 702                         agp_backend_release(bridge);
 703                         cleanup(dinfo);
 704                         return -EBUSY;
 705                 }
 706                 if (dinfo->mobile)
 707                         dinfo->cursor.physical
 708                                 = dinfo->gtt_cursor_mem->physical;
 709                 else
 710                         dinfo->cursor.physical = dinfo->aperture.physical
 711                                 + (dinfo->cursor.offset << 12);
 712                 dinfo->cursor.virtual = dinfo->aperture.virtual
 713                         + (dinfo->cursor.offset << 12);
 714         }
 715         if (dinfo->fbmem_gart) {
 716                 if (!(dinfo->gtt_fb_mem =
 717                       agp_allocate_memory(bridge, dinfo->fb.size >> 12,
 718                                           AGP_NORMAL_MEMORY))) {
 719                         WRN_MSG("cannot allocate framebuffer memory - use "
 720                                 "the stolen one\n");
 721                         dinfo->fbmem_gart = 0;
 722                 }
 723                 if (agp_bind_memory(dinfo->gtt_fb_mem,
 724                                     dinfo->fb.offset)) {
 725                         WRN_MSG("cannot bind framebuffer memory - use "
 726                                 "the stolen one\n");
 727                         dinfo->fbmem_gart = 0;
 728                 }
 729         }
 730
 731         /* update framebuffer memory parameters */
 732         if (!dinfo->fbmem_gart)
 733                 dinfo->fb.offset = 0;   /* starts at offset 0 */
 734         dinfo->fb.physical = dinfo->aperture.physical
 735                 + (dinfo->fb.offset << 12);
 736         dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
 737         dinfo->fb_start = dinfo->fb.offset << 12;
 738
 739         /* release agpgart */
 740         agp_backend_release(bridge);
 741
 742         if (mtrr)
 743                 dinfo->wc_cookie = arch_phys_wc_add(dinfo->aperture.physical,
 744                                                     dinfo->aperture.size);
 745
 746         DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
 747                 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
 748                 dinfo->fb.virtual);
 749         DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
 750                 dinfo->mmio_base_phys, INTEL_REG_SIZE,
 751                 dinfo->mmio_base);
 752         DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
 753                 dinfo->ring.physical, dinfo->ring.size,
 754                 dinfo->ring.virtual);
 755         DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
 756                 dinfo->cursor.physical, dinfo->cursor.size,
 757                 dinfo->cursor.virtual, dinfo->cursor.offset,
 758                 dinfo->cursor.physical);
 759
 760         DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
 761                 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
 762         DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
 763
 764         if (probeonly)
 765                 bailout(dinfo);
 766
 767         /*
 768          * Check if the LVDS port or any DVO ports are enabled.  If so,
 769          * don't allow mode switching
 770          */
 771         dvo = intelfbhw_check_non_crt(dinfo);
 772         if (dvo) {
 773                 dinfo->fixed_mode = 1;
 774                 WRN_MSG("Non-CRT device is enabled ( ");
 775                 i = 0;
 776                 while (dvo) {
 777                         if (dvo & 1) {
 778                                 s = intelfbhw_dvo_to_string(1 << i);
 779                                 if (s)
 780                                         printk("%s ", s);
 781                         }
 782                         dvo >>= 1;
 783                         ++i;
 784                 }
 785                 printk(").  Disabling mode switching.\n");
 786         }
 787
 788         if (bailearly == 1)
 789                 bailout(dinfo);
 790
 791         if (FIXED_MODE(dinfo) &&
 792             screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
 793                 ERR_MSG("Video mode must be programmed at boot time.\n");
 794                 cleanup(dinfo);
 795                 return -ENODEV;
 796         }
 797
 798         if (bailearly == 2)
 799                 bailout(dinfo);
 800
 801         /* Initialise dinfo and related data. */
 802         /* If an initial mode was programmed at boot time, get its details. */
 803         if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
 804                 get_initial_mode(dinfo);
 805
 806         if (bailearly == 3)
 807                 bailout(dinfo);
 808
 809         if (FIXED_MODE(dinfo))  /* remap fb address */
 810                 update_dinfo(dinfo, &dinfo->initial_var);
 811
 812         if (bailearly == 4)
 813                 bailout(dinfo);
 814
 815
 816         if (intelfb_set_fbinfo(dinfo)) {
 817                 cleanup(dinfo);
 818                 return -ENODEV;
 819         }
 820
 821         if (bailearly == 5)
 822                 bailout(dinfo);
 823
 824 #ifdef CONFIG_FB_INTEL_I2C
 825         /* register I2C bus */
 826         intelfb_create_i2c_busses(dinfo);
 827 #endif
 828
 829         if (bailearly == 6)
 830                 bailout(dinfo);
 831
 832         pci_set_drvdata(pdev, dinfo);
 833
 834         /* Save the initial register state. */
 835         i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
 836                                     bailearly > 6 ? bailearly - 6 : 0);
 837         if (i != 0) {
 838                 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
 839                 bailout(dinfo);
 840         }
 841
 842         intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
 843
 844         if (bailearly == 18)
 845                 bailout(dinfo);
 846
 847         /* read active pipe */
 848         dinfo->pipe = intelfbhw_active_pipe(&dinfo->save_state);
 849
 850         /* Cursor initialisation */
 851         if (dinfo->hwcursor) {
 852                 intelfbhw_cursor_init(dinfo);
 853                 intelfbhw_cursor_reset(dinfo);
 854         }
 855
 856         if (bailearly == 19)
 857                 bailout(dinfo);
 858
 859         /* 2d acceleration init */
 860         if (dinfo->accel)
 861                 intelfbhw_2d_start(dinfo);
 862
 863         if (bailearly == 20)
 864                 bailout(dinfo);
 865
 866         if (noregister)
 867                 bailout(dinfo);
 868
 869         if (register_framebuffer(dinfo->info) < 0) {
 870                 ERR_MSG("Cannot register framebuffer.\n");
 871                 cleanup(dinfo);
 872                 return -ENODEV;
 873         }
 874
 875         dinfo->registered = 1;
 876         dinfo->open = 0;
 877
 878         init_waitqueue_head(&dinfo->vsync.wait);
 879         spin_lock_init(&dinfo->int_lock);
 880         dinfo->irq_flags = 0;
 881         dinfo->vsync.pan_display = 0;
 882         dinfo->vsync.pan_offset = 0;
 883
 884         return 0;
 885
 886 err_out_pixmap:
 887         fb_dealloc_cmap(&info->cmap);
 888 err_out_cmap:
 889         framebuffer_release(info);
 890         return -ENODEV;
 891 }
 892
 893 static void intelfb_pci_unregister(struct pci_dev *pdev)
 894 {
 895         struct intelfb_info *dinfo = pci_get_drvdata(pdev);
 896
 897         DBG_MSG("intelfb_pci_unregister\n");
 898
 899         if (!dinfo)
 900                 return;
 901
 902         cleanup(dinfo);
 903 }
 904
 905 /***************************************************************
 906  *                       helper functions                      *
 907  ***************************************************************/
 908
 909 __inline__ int intelfb_var_to_depth(const struct fb_var_screeninfo *var)
 910 {
 911         DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
 912                 var->bits_per_pixel, var->green.length);
 913
 914         switch (var->bits_per_pixel) {
 915         case 16:
 916                 return (var->green.length == 6) ? 16 : 15;
 917         case 32:
 918                 return 24;
 919         default:
 920                 return var->bits_per_pixel;
 921         }
 922 }
 923
 924
 925 static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
 926 {
 927         int xtot = var->xres + var->left_margin + var->right_margin +
 928                    var->hsync_len;
 929         int ytot = var->yres + var->upper_margin + var->lower_margin +
 930                    var->vsync_len;
 931
 932         return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
 933 }
 934
 935 /***************************************************************
 936  *                Various initialisation functions             *
 937  ***************************************************************/
 938
 939 static void get_initial_mode(struct intelfb_info *dinfo)
 940 {
 941         struct fb_var_screeninfo *var;
 942         int xtot, ytot;
 943
 944         DBG_MSG("get_initial_mode\n");
 945
 946         dinfo->initial_vga = 1;
 947         dinfo->initial_fb_base = screen_info.lfb_base;
 948         dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
 949         dinfo->initial_pitch = screen_info.lfb_linelength;
 950
 951         var = &dinfo->initial_var;
 952         memset(var, 0, sizeof(*var));
 953         var->xres = screen_info.lfb_width;
 954         var->yres = screen_info.lfb_height;
 955         var->bits_per_pixel = screen_info.lfb_depth;
 956         switch (screen_info.lfb_depth) {
 957         case 15:
 958                 var->bits_per_pixel = 16;
 959                 break;
 960         case 24:
 961                 var->bits_per_pixel = 32;
 962                 break;
 963         }
 964
 965         DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
 966                 dinfo->initial_fb_base, dinfo->initial_video_ram,
 967                 BtoKB(dinfo->initial_video_ram));
 968
 969         DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
 970                 var->xres, var->yres, var->bits_per_pixel,
 971                 dinfo->initial_pitch);
 972
 973         /* Dummy timing values (assume 60Hz) */
 974         var->left_margin = (var->xres / 8) & 0xf8;
 975         var->right_margin = 32;
 976         var->upper_margin = 16;
 977         var->lower_margin = 4;
 978         var->hsync_len = (var->xres / 8) & 0xf8;
 979         var->vsync_len = 4;
 980
 981         xtot = var->xres + var->left_margin +
 982                 var->right_margin + var->hsync_len;
 983         ytot = var->yres + var->upper_margin +
 984                 var->lower_margin + var->vsync_len;
 985         var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
 986
 987         var->height = -1;
 988         var->width = -1;
 989
 990         if (var->bits_per_pixel > 8) {
 991                 var->red.offset = screen_info.red_pos;
 992                 var->red.length = screen_info.red_size;
 993                 var->green.offset = screen_info.green_pos;
 994                 var->green.length = screen_info.green_size;
 995                 var->blue.offset = screen_info.blue_pos;
 996                 var->blue.length = screen_info.blue_size;
 997                 var->transp.offset = screen_info.rsvd_pos;
 998                 var->transp.length = screen_info.rsvd_size;
 999         } else {
1000                 var->red.length = 8;
1001                 var->green.length = 8;
1002                 var->blue.length = 8;
1003         }
1004 }
1005
1006 static int intelfb_init_var(struct intelfb_info *dinfo)
1007 {
1008         struct fb_var_screeninfo *var;
1009         int msrc = 0;
1010
1011         DBG_MSG("intelfb_init_var\n");
1012
1013         var = &dinfo->info->var;
1014         if (FIXED_MODE(dinfo)) {
1015                 memcpy(var, &dinfo->initial_var,
1016                        sizeof(struct fb_var_screeninfo));
1017                 msrc = 5;
1018         } else {
1019                 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1020                 u8 *edid_d = NULL;
1021
1022                 if (edid_s) {
1023                         edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1024
1025                         if (edid_d) {
1026                                 fb_edid_to_monspecs(edid_d,
1027                                                     &dinfo->info->monspecs);
1028                                 kfree(edid_d);
1029                         }
1030                 }
1031
1032                 if (mode) {
1033                         printk("intelfb: Looking for mode in private "
1034                                "database\n");
1035                         msrc = fb_find_mode(var, dinfo->info, mode,
1036                                             dinfo->info->monspecs.modedb,
1037                                             dinfo->info->monspecs.modedb_len,
1038                                             NULL, 0);
1039
1040                         if (msrc && msrc > 1) {
1041                                 printk("intelfb: No mode in private database, "
1042                                        "intelfb: looking for mode in global "
1043                                        "database ");
1044                                 msrc = fb_find_mode(var, dinfo->info, mode,
1045                                                     NULL, 0, NULL, 0);
1046
1047                                 if (msrc)
1048                                         msrc |= 8;
1049                         }
1050
1051                 }
1052
1053                 if (!msrc)
1054                         msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1055                                             NULL, 0, NULL, 0);
1056         }
1057
1058         if (!msrc) {
1059                 ERR_MSG("Cannot find a suitable video mode.\n");
1060                 return 1;
1061         }
1062
1063         INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1064                 var->bits_per_pixel, var_to_refresh(var));
1065
1066         DBG_MSG("Initial video mode is from %d.\n", msrc);
1067
1068 #if ALLOCATE_FOR_PANNING
1069         /* Allow use of half of the video ram for panning */
1070         var->xres_virtual = var->xres;
1071         var->yres_virtual =
1072                 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1073         if (var->yres_virtual < var->yres)
1074                 var->yres_virtual = var->yres;
1075 #else
1076         var->yres_virtual = var->yres;
1077 #endif
1078
1079         if (dinfo->accel)
1080                 var->accel_flags |= FB_ACCELF_TEXT;
1081         else
1082                 var->accel_flags &= ~FB_ACCELF_TEXT;
1083
1084         return 0;
1085 }
1086
1087 static int intelfb_set_fbinfo(struct intelfb_info *dinfo)
1088 {
1089         struct fb_info *info = dinfo->info;
1090
1091         DBG_MSG("intelfb_set_fbinfo\n");
1092
1093         info->flags = FBINFO_FLAG_DEFAULT;
1094         info->fbops = &intel_fb_ops;
1095         info->pseudo_palette = dinfo->pseudo_palette;
1096
1097         info->pixmap.size = 64*1024;
1098         info->pixmap.buf_align = 8;
1099         info->pixmap.access_align = 32;
1100         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1101
1102         if (intelfb_init_var(dinfo))
1103                 return 1;
1104
1105         info->pixmap.scan_align = 1;
1106         strcpy(info->fix.id, dinfo->name);
1107         info->fix.smem_start = dinfo->fb.physical;
1108         info->fix.smem_len = dinfo->fb.size;
1109         info->fix.type = FB_TYPE_PACKED_PIXELS;
1110         info->fix.type_aux = 0;
1111         info->fix.xpanstep = 8;
1112         info->fix.ypanstep = 1;
1113         info->fix.ywrapstep = 0;
1114         info->fix.mmio_start = dinfo->mmio_base_phys;
1115         info->fix.mmio_len = INTEL_REG_SIZE;
1116         info->fix.accel = FB_ACCEL_I830;
1117         update_dinfo(dinfo, &info->var);
1118
1119         return 0;
1120 }
1121
1122 /* Update dinfo to match the active video mode. */
1123 static void update_dinfo(struct intelfb_info *dinfo,
1124                          struct fb_var_screeninfo *var)
1125 {
1126         DBG_MSG("update_dinfo\n");
1127
1128         dinfo->bpp = var->bits_per_pixel;
1129         dinfo->depth = intelfb_var_to_depth(var);
1130         dinfo->xres = var->xres;
1131         dinfo->yres = var->xres;
1132         dinfo->pixclock = var->pixclock;
1133
1134         dinfo->info->fix.visual = dinfo->visual;
1135         dinfo->info->fix.line_length = dinfo->pitch;
1136
1137         switch (dinfo->bpp) {
1138         case 8:
1139                 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1140                 dinfo->pitch = var->xres_virtual;
1141                 break;
1142         case 16:
1143                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1144                 dinfo->pitch = var->xres_virtual * 2;
1145                 break;
1146         case 32:
1147                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1148                 dinfo->pitch = var->xres_virtual * 4;
1149                 break;
1150         }
1151
1152         /* Make sure the line length is a aligned correctly. */
1153         if (IS_I9XX(dinfo))
1154                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1155         else
1156                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1157
1158         if (FIXED_MODE(dinfo))
1159                 dinfo->pitch = dinfo->initial_pitch;
1160
1161         dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1162         dinfo->info->fix.line_length = dinfo->pitch;
1163         dinfo->info->fix.visual = dinfo->visual;
1164 }
1165
1166 /* fbops functions */
1167
1168 /***************************************************************
1169  *                       fbdev interface                       *
1170  ***************************************************************/
1171
1172 static int intelfb_open(struct fb_info *info, int user)
1173 {
1174         struct intelfb_info *dinfo = GET_DINFO(info);
1175
1176         if (user)
1177                 dinfo->open++;
1178
1179         return 0;
1180 }
1181
1182 static int intelfb_release(struct fb_info *info, int user)
1183 {
1184         struct intelfb_info *dinfo = GET_DINFO(info);
1185
1186         if (user) {
1187                 dinfo->open--;
1188                 msleep(1);
1189                 if (!dinfo->open)
1190                         intelfbhw_disable_irq(dinfo);
1191         }
1192
1193         return 0;
1194 }
1195
1196 static int intelfb_check_var(struct fb_var_screeninfo *var,
1197                              struct fb_info *info)
1198 {
1199         int change_var = 0;
1200         struct fb_var_screeninfo v;
1201         struct intelfb_info *dinfo;
1202         static int first = 1;
1203         int i;
1204         /* Good pitches to allow tiling.  Don't care about pitches < 1024. */
1205         static const int pitches[] = {
1206                 128 * 8,
1207                 128 * 16,
1208                 128 * 32,
1209                 128 * 64,
1210                 0
1211         };
1212
1213         DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1214
1215         dinfo = GET_DINFO(info);
1216
1217         /* update the pitch */
1218         if (intelfbhw_validate_mode(dinfo, var) != 0)
1219                 return -EINVAL;
1220
1221         v = *var;
1222
1223         for (i = 0; pitches[i] != 0; i++) {
1224                 if (pitches[i] >= v.xres_virtual) {
1225                         v.xres_virtual = pitches[i];
1226                         break;
1227                 }
1228         }
1229
1230         /* Check for a supported bpp. */
1231         if (v.bits_per_pixel <= 8)
1232                 v.bits_per_pixel = 8;
1233         else if (v.bits_per_pixel <= 16) {
1234                 if (v.bits_per_pixel == 16)
1235                         v.green.length = 6;
1236                 v.bits_per_pixel = 16;
1237         } else if (v.bits_per_pixel <= 32)
1238                 v.bits_per_pixel = 32;
1239         else
1240                 return -EINVAL;
1241
1242         change_var = ((info->var.xres != var->xres) ||
1243                       (info->var.yres != var->yres) ||
1244                       (info->var.xres_virtual != var->xres_virtual) ||
1245                       (info->var.yres_virtual != var->yres_virtual) ||
1246                       (info->var.bits_per_pixel != var->bits_per_pixel) ||
1247                       memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1248                       memcmp(&info->var.green, &var->green,
1249                              sizeof(var->green)) ||
1250                       memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1251
1252         if (FIXED_MODE(dinfo) &&
1253             (change_var ||
1254              var->yres_virtual > dinfo->initial_var.yres_virtual ||
1255              var->yres_virtual < dinfo->initial_var.yres ||
1256              var->xoffset || var->nonstd)) {
1257                 if (first) {
1258                         ERR_MSG("Changing the video mode is not supported.\n");
1259                         first = 0;
1260                 }
1261                 return -EINVAL;
1262         }
1263
1264         switch (intelfb_var_to_depth(&v)) {
1265         case 8:
1266                 v.red.offset = v.green.offset = v.blue.offset = 0;
1267                 v.red.length = v.green.length = v.blue.length = 8;
1268                 v.transp.offset = v.transp.length = 0;
1269                 break;
1270         case 15:
1271                 v.red.offset = 10;
1272                 v.green.offset = 5;
1273                 v.blue.offset = 0;
1274                 v.red.length = v.green.length = v.blue.length = 5;
1275                 v.transp.offset = v.transp.length = 0;
1276                 break;
1277         case 16:
1278                 v.red.offset = 11;
1279                 v.green.offset = 5;
1280                 v.blue.offset = 0;
1281                 v.red.length = 5;
1282                 v.green.length = 6;
1283                 v.blue.length = 5;
1284                 v.transp.offset = v.transp.length = 0;
1285                 break;
1286         case 24:
1287                 v.red.offset = 16;
1288                 v.green.offset = 8;
1289                 v.blue.offset = 0;
1290                 v.red.length = v.green.length = v.blue.length = 8;
1291                 v.transp.offset = v.transp.length = 0;
1292                 break;
1293         case 32:
1294                 v.red.offset = 16;
1295                 v.green.offset = 8;
1296                 v.blue.offset = 0;
1297                 v.red.length = v.green.length = v.blue.length = 8;
1298                 v.transp.offset = 24;
1299                 v.transp.length = 8;
1300                 break;
1301         }
1302
1303         if (v.xoffset > v.xres_virtual - v.xres)
1304                 v.xoffset = v.xres_virtual - v.xres;
1305         if (v.yoffset > v.yres_virtual - v.yres)
1306                 v.yoffset = v.yres_virtual - v.yres;
1307
1308         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1309                           v.transp.msb_right = 0;
1310
1311         *var = v;
1312
1313         return 0;
1314 }
1315
1316 static int intelfb_set_par(struct fb_info *info)
1317 {
1318         struct intelfb_hwstate *hw;
1319         struct intelfb_info *dinfo = GET_DINFO(info);
1320
1321         if (FIXED_MODE(dinfo)) {
1322                 ERR_MSG("Changing the video mode is not supported.\n");
1323                 return -EINVAL;
1324         }
1325
1326         hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1327         if (!hw)
1328                 return -ENOMEM;
1329
1330         DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1331                 info->var.yres, info->var.bits_per_pixel);
1332
1333         /*
1334          * Disable VCO prior to timing register change.
1335          */
1336         OUTREG(DPLL_A, INREG(DPLL_A) & ~DPLL_VCO_ENABLE);
1337
1338         intelfb_blank(FB_BLANK_POWERDOWN, info);
1339
1340         if (ACCEL(dinfo, info))
1341                 intelfbhw_2d_stop(dinfo);
1342
1343         memcpy(hw, &dinfo->save_state, sizeof(*hw));
1344         if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1345                 goto invalid_mode;
1346         if (intelfbhw_program_mode(dinfo, hw, 0))
1347                 goto invalid_mode;
1348
1349 #if REGDUMP > 0
1350         intelfbhw_read_hw_state(dinfo, hw, 0);
1351         intelfbhw_print_hw_state(dinfo, hw);
1352 #endif
1353
1354         update_dinfo(dinfo, &info->var);
1355
1356         if (ACCEL(dinfo, info))
1357                 intelfbhw_2d_start(dinfo);
1358
1359         intelfb_pan_display(&info->var, info);
1360
1361         intelfb_blank(FB_BLANK_UNBLANK, info);
1362
1363         if (ACCEL(dinfo, info)) {
1364                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1365                 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1366                 FBINFO_HWACCEL_IMAGEBLIT;
1367         } else
1368                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1369
1370         kfree(hw);
1371         return 0;
1372 invalid_mode:
1373         kfree(hw);
1374         return -EINVAL;
1375 }
1376
1377 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1378                              unsigned blue, unsigned transp,
1379                              struct fb_info *info)
1380 {
1381         struct intelfb_info *dinfo = GET_DINFO(info);
1382
1383 #if VERBOSE > 0
1384         DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1385 #endif
1386
1387         if (regno > 255)
1388                 return 1;
1389
1390         if (dinfo->depth == 8) {
1391                 red >>= 8;
1392                 green >>= 8;
1393                 blue >>= 8;
1394
1395                 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1396                                     transp);
1397         }
1398
1399         if (regno < 16) {
1400                 switch (dinfo->depth) {
1401                 case 15:
1402                         dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1403                                 ((green & 0xf800) >>  6) |
1404                                 ((blue & 0xf800) >> 11);
1405                         break;
1406                 case 16:
1407                         dinfo->pseudo_palette[regno] = (red & 0xf800) |
1408                                 ((green & 0xfc00) >>  5) |
1409                                 ((blue  & 0xf800) >> 11);
1410                         break;
1411                 case 24:
1412                         dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1413                                 (green & 0xff00) |
1414                                 ((blue  & 0xff00) >> 8);
1415                         break;
1416                 }
1417         }
1418
1419         return 0;
1420 }
1421
1422 static int intelfb_blank(int blank, struct fb_info *info)
1423 {
1424         intelfbhw_do_blank(blank, info);
1425         return 0;
1426 }
1427
1428 static int intelfb_pan_display(struct fb_var_screeninfo *var,
1429                                struct fb_info *info)
1430 {
1431         intelfbhw_pan_display(var, info);
1432         return 0;
1433 }
1434
1435 /* When/if we have our own ioctls. */
1436 static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1437                          unsigned long arg)
1438 {
1439         int retval = 0;
1440         struct intelfb_info *dinfo = GET_DINFO(info);
1441         u32 pipe = 0;
1442
1443         switch (cmd) {
1444                 case FBIO_WAITFORVSYNC:
1445                         if (get_user(pipe, (__u32 __user *)arg))
1446                                 return -EFAULT;
1447
1448                         retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1449                         break;
1450                 default:
1451                         break;
1452         }
1453
1454         return retval;
1455 }
1456
1457 static void intelfb_fillrect (struct fb_info *info,
1458                               const struct fb_fillrect *rect)
1459 {
1460         struct intelfb_info *dinfo = GET_DINFO(info);
1461         u32 rop, color;
1462
1463 #if VERBOSE > 0
1464         DBG_MSG("intelfb_fillrect\n");
1465 #endif
1466
1467         if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1468                 cfb_fillrect(info, rect);
1469                 return;
1470         }
1471
1472         if (rect->rop == ROP_COPY)
1473                 rop = PAT_ROP_GXCOPY;
1474         else /* ROP_XOR */
1475                 rop = PAT_ROP_GXXOR;
1476
1477         if (dinfo->depth != 8)
1478                 color = dinfo->pseudo_palette[rect->color];
1479         else
1480                 color = rect->color;
1481
1482         intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1483                               rect->width, rect->height, color,
1484                               dinfo->pitch, info->var.bits_per_pixel,
1485                               rop);
1486 }
1487
1488 static void intelfb_copyarea(struct fb_info *info,
1489                              const struct fb_copyarea *region)
1490 {
1491         struct intelfb_info *dinfo = GET_DINFO(info);
1492
1493 #if VERBOSE > 0
1494         DBG_MSG("intelfb_copyarea\n");
1495 #endif
1496
1497         if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1498                 cfb_copyarea(info, region);
1499                 return;
1500         }
1501
1502         intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1503                             region->dy, region->width, region->height,
1504                             dinfo->pitch, info->var.bits_per_pixel);
1505 }
1506
1507 static void intelfb_imageblit(struct fb_info *info,
1508                               const struct fb_image *image)
1509 {
1510         struct intelfb_info *dinfo = GET_DINFO(info);
1511         u32 fgcolor, bgcolor;
1512
1513 #if VERBOSE > 0
1514         DBG_MSG("intelfb_imageblit\n");
1515 #endif
1516
1517         if (!ACCEL(dinfo, info) || dinfo->depth == 4
1518             || image->depth != 1) {
1519                 cfb_imageblit(info, image);
1520                 return;
1521         }
1522
1523         if (dinfo->depth != 8) {
1524                 fgcolor = dinfo->pseudo_palette[image->fg_color];
1525                 bgcolor = dinfo->pseudo_palette[image->bg_color];
1526         } else {
1527                 fgcolor = image->fg_color;
1528                 bgcolor = image->bg_color;
1529         }
1530
1531         if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1532                                     image->height, image->data,
1533                                     image->dx, image->dy,
1534                                     dinfo->pitch, info->var.bits_per_pixel)) {
1535                 cfb_imageblit(info, image);
1536                 return;
1537         }
1538 }
1539
1540 static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1541 {
1542         struct intelfb_info *dinfo = GET_DINFO(info);
1543         u32 physical;
1544 #if VERBOSE > 0
1545         DBG_MSG("intelfb_cursor\n");
1546 #endif
1547
1548         if (!dinfo->hwcursor)
1549                 return -ENODEV;
1550
1551         intelfbhw_cursor_hide(dinfo);
1552
1553         /* If XFree killed the cursor - restore it */
1554         physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1555                    (dinfo->cursor.offset << 12);
1556
1557         if (INREG(CURSOR_A_BASEADDR) != physical) {
1558                 u32 fg, bg;
1559
1560                 DBG_MSG("the cursor was killed - restore it !!\n");
1561                 DBG_MSG("size %d, %d   pos %d, %d\n",
1562                         cursor->image.width, cursor->image.height,
1563                         cursor->image.dx, cursor->image.dy);
1564
1565                 intelfbhw_cursor_init(dinfo);
1566                 intelfbhw_cursor_reset(dinfo);
1567                 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1568                                         cursor->image.dy);
1569
1570                 if (dinfo->depth != 8) {
1571                         fg =dinfo->pseudo_palette[cursor->image.fg_color];
1572                         bg =dinfo->pseudo_palette[cursor->image.bg_color];
1573                 } else {
1574                         fg = cursor->image.fg_color;
1575                         bg = cursor->image.bg_color;
1576                 }
1577                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1578                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1579                                       cursor->image.height,
1580                                       dinfo->cursor_src);
1581
1582                 if (cursor->enable)
1583                         intelfbhw_cursor_show(dinfo);
1584                 return 0;
1585         }
1586
1587         if (cursor->set & FB_CUR_SETPOS) {
1588                 u32 dx, dy;
1589
1590                 dx = cursor->image.dx - info->var.xoffset;
1591                 dy = cursor->image.dy - info->var.yoffset;
1592
1593                 intelfbhw_cursor_setpos(dinfo, dx, dy);
1594         }
1595
1596         if (cursor->set & FB_CUR_SETSIZE) {
1597                 if (cursor->image.width > 64 || cursor->image.height > 64)
1598                         return -ENXIO;
1599
1600                 intelfbhw_cursor_reset(dinfo);
1601         }
1602
1603         if (cursor->set & FB_CUR_SETCMAP) {
1604                 u32 fg, bg;
1605
1606                 if (dinfo->depth != 8) {
1607                         fg = dinfo->pseudo_palette[cursor->image.fg_color];
1608                         bg = dinfo->pseudo_palette[cursor->image.bg_color];
1609                 } else {
1610                         fg = cursor->image.fg_color;
1611                         bg = cursor->image.bg_color;
1612                 }
1613
1614                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1615         }
1616
1617         if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1618                 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1619                 u32 size = s_pitch * cursor->image.height;
1620                 u8 *dat = (u8 *) cursor->image.data;
1621                 u8 *msk = (u8 *) cursor->mask;
1622                 u8 src[64];
1623                 u32 i;
1624
1625                 if (cursor->image.depth != 1)
1626                         return -ENXIO;
1627
1628                 switch (cursor->rop) {
1629                 case ROP_XOR:
1630                         for (i = 0; i < size; i++)
1631                                 src[i] = dat[i] ^ msk[i];
1632                         break;
1633                 case ROP_COPY:
1634                 default:
1635                         for (i = 0; i < size; i++)
1636                                 src[i] = dat[i] & msk[i];
1637                         break;
1638                 }
1639
1640                 /* save the bitmap to restore it when XFree will
1641                    make the cursor dirty */
1642                 memcpy(dinfo->cursor_src, src, size);
1643
1644                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1645                                       cursor->image.height, src);
1646         }
1647
1648         if (cursor->enable)
1649                 intelfbhw_cursor_show(dinfo);
1650
1651         return 0;
1652 }
1653
1654 static int intelfb_sync(struct fb_info *info)
1655 {
1656         struct intelfb_info *dinfo = GET_DINFO(info);
1657
1658 #if VERBOSE > 0
1659         DBG_MSG("intelfb_sync\n");
1660 #endif
1661
1662         if (dinfo->ring_lockup)
1663                 return 0;
1664
1665         intelfbhw_do_sync(dinfo);
1666         return 0;
1667 }
1668