kernel/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 #ifdef CONFIG_MTRR
 128 #include <asm/mtrr.h>
 129 #endif
 130
 131 #include "intelfb.h"
 132 #include "intelfbhw.h"
 133 #include "../edid.h"
 134
 135 static void get_initial_mode(struct intelfb_info *dinfo);
 136 static void update_dinfo(struct intelfb_info *dinfo,
 137                          struct fb_var_screeninfo *var);
 138 static int intelfb_open(struct fb_info *info, int user);
 139 static int intelfb_release(struct fb_info *info, int user);
 140 static int intelfb_check_var(struct fb_var_screeninfo *var,
 141                              struct fb_info *info);
 142 static int intelfb_set_par(struct fb_info *info);
 143 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 144                              unsigned blue, unsigned transp,
 145                              struct fb_info *info);
 146
 147 static int intelfb_blank(int blank, struct fb_info *info);
 148 static int intelfb_pan_display(struct fb_var_screeninfo *var,
 149                                struct fb_info *info);
 150
 151 static void intelfb_fillrect(struct fb_info *info,
 152                              const struct fb_fillrect *rect);
 153 static void intelfb_copyarea(struct fb_info *info,
 154                              const struct fb_copyarea *region);
 155 static void intelfb_imageblit(struct fb_info *info,
 156                               const struct fb_image *image);
 157 static int intelfb_cursor(struct fb_info *info,
 158                            struct fb_cursor *cursor);
 159
 160 static int intelfb_sync(struct fb_info *info);
 161
 162 static int intelfb_ioctl(struct fb_info *info,
 163                          unsigned int cmd, unsigned long arg);
 164
 165 static int intelfb_pci_register(struct pci_dev *pdev,
 166                                 const struct pci_device_id *ent);
 167 static void intelfb_pci_unregister(struct pci_dev *pdev);
 168 static int intelfb_set_fbinfo(struct intelfb_info *dinfo);
 169
 170 /*
 171  * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
 172  * mobile chipsets from being registered.
 173  */
 174 #if DETECT_VGA_CLASS_ONLY
 175 #define INTELFB_CLASS_MASK ~0 << 8
 176 #else
 177 #define INTELFB_CLASS_MASK 0
 178 #endif
 179
 180 static struct pci_device_id intelfb_pci_table[] = {
 181         { 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 },
 182         { 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 },
 183         { 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 },
 184         { 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 },
 185         { 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 },
 186         { 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 },
 187         { 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 },
 188         { 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 },
 189         { 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 },
 190         { 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 },
 191         { 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 },
 192         { 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 },
 193         { 0, }
 194 };
 195
 196 /* Global data */
 197 static int num_registered = 0;
 198
 199 /* fb ops */
 200 static struct fb_ops intel_fb_ops = {
 201         .owner =                THIS_MODULE,
 202         .fb_open =              intelfb_open,
 203         .fb_release =           intelfb_release,
 204         .fb_check_var =         intelfb_check_var,
 205         .fb_set_par =           intelfb_set_par,
 206         .fb_setcolreg =         intelfb_setcolreg,
 207         .fb_blank =             intelfb_blank,
 208         .fb_pan_display =       intelfb_pan_display,
 209         .fb_fillrect  =         intelfb_fillrect,
 210         .fb_copyarea  =         intelfb_copyarea,
 211         .fb_imageblit =         intelfb_imageblit,
 212         .fb_cursor =            intelfb_cursor,
 213         .fb_sync =              intelfb_sync,
 214         .fb_ioctl =             intelfb_ioctl
 215 };
 216
 217 /* PCI driver module table */
 218 static struct pci_driver intelfb_driver = {
 219         .name =         "intelfb",
 220         .id_table =     intelfb_pci_table,
 221         .probe =        intelfb_pci_register,
 222         .remove =       intelfb_pci_unregister,
 223 };
 224
 225 /* Module description/parameters */
 226 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
 227               "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
 228 MODULE_DESCRIPTION("Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS
 229                    " chipsets");
 230 MODULE_LICENSE("Dual BSD/GPL");
 231 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
 232
 233 static bool accel       = 1;
 234 static int vram         = 4;
 235 static bool hwcursor    = 0;
 236 static bool mtrr        = 1;
 237 static bool fixed       = 0;
 238 static bool noinit      = 0;
 239 static bool noregister  = 0;
 240 static bool probeonly   = 0;
 241 static bool idonly      = 0;
 242 static int bailearly    = 0;
 243 static int voffset      = 48;
 244 static char *mode       = NULL;
 245
 246 module_param(accel, bool, S_IRUGO);
 247 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
 248 module_param(vram, int, S_IRUGO);
 249 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
 250 module_param(voffset, int, S_IRUGO);
 251 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
 252 module_param(hwcursor, bool, S_IRUGO);
 253 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
 254 module_param(mtrr, bool, S_IRUGO);
 255 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
 256 module_param(fixed, bool, S_IRUGO);
 257 MODULE_PARM_DESC(fixed, "Disable mode switching");
 258 module_param(noinit, bool, 0);
 259 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
 260 module_param(noregister, bool, 0);
 261 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
 262 module_param(probeonly, bool, 0);
 263 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
 264 module_param(idonly, bool, 0);
 265 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
 266 module_param(bailearly, int, 0);
 267 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
 268 module_param(mode, charp, S_IRUGO);
 269 MODULE_PARM_DESC(mode,
 270                  "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
 271
 272 #ifndef MODULE
 273 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
 274 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
 275 #define OPT_STRVAL(opt, name) (opt + strlen(name))
 276
 277 static __inline__ char * get_opt_string(const char *this_opt, const char *name)
 278 {
 279         const char *p;
 280         int i;
 281         char *ret;
 282
 283         p = OPT_STRVAL(this_opt, name);
 284         i = 0;
 285         while (p[i] && p[i] != ' ' && p[i] != ',')
 286                 i++;
 287         ret = kmalloc(i + 1, GFP_KERNEL);
 288         if (ret) {
 289                 strncpy(ret, p, i);
 290                 ret[i] = '\0';
 291         }
 292         return ret;
 293 }
 294
 295 static __inline__ int get_opt_int(const char *this_opt, const char *name,
 296                                   int *ret)
 297 {
 298         if (!ret)
 299                 return 0;
 300
 301         if (!OPT_EQUAL(this_opt, name))
 302                 return 0;
 303
 304         *ret = OPT_INTVAL(this_opt, name);
 305         return 1;
 306 }
 307
 308 static __inline__ int get_opt_bool(const char *this_opt, const char *name,
 309                                    int *ret)
 310 {
 311         if (!ret)
 312                 return 0;
 313
 314         if (OPT_EQUAL(this_opt, name)) {
 315                 if (this_opt[strlen(name)] == '=')
 316                         *ret = simple_strtoul(this_opt + strlen(name) + 1,
 317                                               NULL, 0);
 318                 else
 319                         *ret = 1;
 320         } else {
 321                 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
 322                         *ret = 0;
 323                 else
 324                         return 0;
 325         }
 326         return 1;
 327 }
 328
 329 static int __init 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 intelfb_init(void)
 381 {
 382 #ifndef MODULE
 383         char *option = NULL;
 384 #endif
 385
 386         DBG_MSG("intelfb_init\n");
 387
 388         INF_MSG("Framebuffer driver for "
 389                 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
 390         INF_MSG("Version " INTELFB_VERSION "\n");
 391
 392         if (idonly)
 393                 return -ENODEV;
 394
 395 #ifndef MODULE
 396         if (fb_get_options("intelfb", &option))
 397                 return -ENODEV;
 398         intelfb_setup(option);
 399 #endif
 400
 401         return pci_register_driver(&intelfb_driver);
 402 }
 403
 404 static void __exit intelfb_exit(void)
 405 {
 406         DBG_MSG("intelfb_exit\n");
 407         pci_unregister_driver(&intelfb_driver);
 408 }
 409
 410 module_init(intelfb_init);
 411 module_exit(intelfb_exit);
 412
 413 /***************************************************************
 414  *                     mtrr support functions                  *
 415  ***************************************************************/
 416
 417 #ifdef CONFIG_MTRR
 418 static inline void set_mtrr(struct intelfb_info *dinfo)
 419 {
 420         dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
 421                                    dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
 422         if (dinfo->mtrr_reg < 0) {
 423                 ERR_MSG("unable to set MTRR\n");
 424                 return;
 425         }
 426         dinfo->has_mtrr = 1;
 427 }
 428 static inline void unset_mtrr(struct intelfb_info *dinfo)
 429 {
 430         if (dinfo->has_mtrr)
 431                 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
 432                          dinfo->aperture.size);
 433 }
 434 #else
 435 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
 436
 437 #define unset_mtrr(x) do { } while (0)
 438 #endif /* CONFIG_MTRR */
 439
 440 /***************************************************************
 441  *                        driver init / cleanup                *
 442  ***************************************************************/
 443
 444 static void cleanup(struct intelfb_info *dinfo)
 445 {
 446         DBG_MSG("cleanup\n");
 447
 448         if (!dinfo)
 449                 return;
 450
 451         intelfbhw_disable_irq(dinfo);
 452
 453         fb_dealloc_cmap(&dinfo->info->cmap);
 454         kfree(dinfo->info->pixmap.addr);
 455
 456         if (dinfo->registered)
 457                 unregister_framebuffer(dinfo->info);
 458
 459         unset_mtrr(dinfo);
 460
 461         if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
 462                 agp_unbind_memory(dinfo->gtt_fb_mem);
 463                 agp_free_memory(dinfo->gtt_fb_mem);
 464         }
 465         if (dinfo->gtt_cursor_mem) {
 466                 agp_unbind_memory(dinfo->gtt_cursor_mem);
 467                 agp_free_memory(dinfo->gtt_cursor_mem);
 468         }
 469         if (dinfo->gtt_ring_mem) {
 470                 agp_unbind_memory(dinfo->gtt_ring_mem);
 471                 agp_free_memory(dinfo->gtt_ring_mem);
 472         }
 473
 474 #ifdef CONFIG_FB_INTEL_I2C
 475         /* un-register I2C bus */
 476         intelfb_delete_i2c_busses(dinfo);
 477 #endif
 478
 479         if (dinfo->mmio_base)
 480                 iounmap((void __iomem *)dinfo->mmio_base);
 481         if (dinfo->aperture.virtual)
 482                 iounmap((void __iomem *)dinfo->aperture.virtual);
 483
 484         if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
 485                 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
 486         if (dinfo->flag & INTELFB_FB_ACQUIRED)
 487                 release_mem_region(dinfo->aperture.physical,
 488                                    dinfo->aperture.size);
 489         framebuffer_release(dinfo->info);
 490 }
 491
 492 #define bailout(dinfo) do {                                             \
 493         DBG_MSG("bailout\n");                                           \
 494         cleanup(dinfo);                                                 \
 495         INF_MSG("Not going to register framebuffer, exiting...\n");     \
 496         return -ENODEV;                                                 \
 497 } while (0)
 498
 499
 500 static int intelfb_pci_register(struct pci_dev *pdev,
 501                                 const struct pci_device_id *ent)
 502 {
 503         struct fb_info *info;
 504         struct intelfb_info *dinfo;
 505         int i, err, dvo;
 506         int aperture_size, stolen_size;
 507         struct agp_kern_info gtt_info;
 508         int agp_memtype;
 509         const char *s;
 510         struct agp_bridge_data *bridge;
 511         int aperture_bar = 0;
 512         int mmio_bar = 1;
 513         int offset;
 514
 515         DBG_MSG("intelfb_pci_register\n");
 516
 517         num_registered++;
 518         if (num_registered != 1) {
 519                 ERR_MSG("Attempted to register %d devices "
 520                         "(should be only 1).\n", num_registered);
 521                 return -ENODEV;
 522         }
 523
 524         info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
 525         if (!info) {
 526                 ERR_MSG("Could not allocate memory for intelfb_info.\n");
 527                 return -ENODEV;
 528         }
 529         if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
 530                 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
 531                 goto err_out_cmap;
 532         }
 533
 534         dinfo = info->par;
 535         dinfo->info  = info;
 536         dinfo->fbops = &intel_fb_ops;
 537         dinfo->pdev  = pdev;
 538
 539         /* Reserve pixmap space. */
 540         info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
 541         if (info->pixmap.addr == NULL) {
 542                 ERR_MSG("Cannot reserve pixmap memory.\n");
 543                 goto err_out_pixmap;
 544         }
 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             (ent->device == PCI_DEVICE_ID_INTEL_945GME) ||
 563             (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
 564             (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
 565
 566                 aperture_bar = 2;
 567                 mmio_bar = 0;
 568         }
 569         dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
 570         dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
 571         dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
 572         DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
 573                 (unsigned long long)pci_resource_start(pdev, aperture_bar),
 574                 (unsigned long long)pci_resource_len(pdev, aperture_bar),
 575                 (unsigned long long)pci_resource_start(pdev, mmio_bar),
 576                 (unsigned long long)pci_resource_len(pdev, mmio_bar));
 577
 578         /* Reserve the fb and MMIO regions */
 579         if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
 580                                 INTELFB_MODULE_NAME)) {
 581                 ERR_MSG("Cannot reserve FB region.\n");
 582                 cleanup(dinfo);
 583                 return -ENODEV;
 584         }
 585
 586         dinfo->flag |= INTELFB_FB_ACQUIRED;
 587
 588         if (!request_mem_region(dinfo->mmio_base_phys,
 589                                 INTEL_REG_SIZE,
 590                                 INTELFB_MODULE_NAME)) {
 591                 ERR_MSG("Cannot reserve MMIO region.\n");
 592                 cleanup(dinfo);
 593                 return -ENODEV;
 594         }
 595
 596         dinfo->flag |= INTELFB_MMIO_ACQUIRED;
 597
 598         /* Get the chipset info. */
 599         dinfo->pci_chipset = pdev->device;
 600
 601         if (intelfbhw_get_chipset(pdev, dinfo)) {
 602                 cleanup(dinfo);
 603                 return -ENODEV;
 604         }
 605
 606         if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
 607                 cleanup(dinfo);
 608                 return -ENODEV;
 609         }
 610
 611         INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
 612                 "stolen memory %dkB\n",
 613                 pdev->bus->number, PCI_SLOT(pdev->devfn),
 614                 PCI_FUNC(pdev->devfn), dinfo->name,
 615                 BtoMB(aperture_size), BtoKB(stolen_size));
 616
 617         /* Set these from the options. */
 618         dinfo->accel    = accel;
 619         dinfo->hwcursor = hwcursor;
 620
 621         if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
 622                 INF_MSG("Acceleration is not supported for the %s chipset.\n",
 623                         dinfo->name);
 624                 dinfo->accel = 0;
 625         }
 626
 627         /* Framebuffer parameters - Use all the stolen memory if >= vram */
 628         if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
 629                 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
 630                 dinfo->fbmem_gart = 0;
 631         } else {
 632                 dinfo->fb.size =  MB(vram);
 633                 dinfo->fbmem_gart = 1;
 634         }
 635
 636         /* Allocate space for the ring buffer and HW cursor if enabled. */
 637         if (dinfo->accel) {
 638                 dinfo->ring.size = RINGBUFFER_SIZE;
 639                 dinfo->ring_tail_mask = dinfo->ring.size - 1;
 640         }
 641         if (dinfo->hwcursor)
 642                 dinfo->cursor.size = HW_CURSOR_SIZE;
 643
 644         /* Use agpgart to manage the GATT */
 645         if (!(bridge = agp_backend_acquire(pdev))) {
 646                 ERR_MSG("cannot acquire agp\n");
 647                 cleanup(dinfo);
 648                 return -ENODEV;
 649         }
 650
 651         /* get the current gatt info */
 652         if (agp_copy_info(bridge, &gtt_info)) {
 653                 ERR_MSG("cannot get agp info\n");
 654                 agp_backend_release(bridge);
 655                 cleanup(dinfo);
 656                 return -ENODEV;
 657         }
 658
 659         if (MB(voffset) < stolen_size)
 660                 offset = (stolen_size >> 12);
 661         else
 662                 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
 663
 664         /* set the mem offsets - set them after the already used pages */
 665         if (dinfo->accel)
 666                 dinfo->ring.offset = offset + gtt_info.current_memory;
 667         if (dinfo->hwcursor)
 668                 dinfo->cursor.offset = offset +
 669                         + gtt_info.current_memory + (dinfo->ring.size >> 12);
 670         if (dinfo->fbmem_gart)
 671                 dinfo->fb.offset = offset +
 672                         + gtt_info.current_memory + (dinfo->ring.size >> 12)
 673                         + (dinfo->cursor.size >> 12);
 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                 agp_backend_release(bridge);
 684                 cleanup(dinfo);
 685                 return -ENODEV;
 686         }
 687
 688         dinfo->mmio_base =
 689                 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
 690                                               INTEL_REG_SIZE);
 691         if (!dinfo->mmio_base) {
 692                 ERR_MSG("Cannot remap MMIO region.\n");
 693                 agp_backend_release(bridge);
 694                 cleanup(dinfo);
 695                 return -ENODEV;
 696         }
 697
 698         if (dinfo->accel) {
 699                 if (!(dinfo->gtt_ring_mem =
 700                       agp_allocate_memory(bridge, dinfo->ring.size >> 12,
 701                                           AGP_NORMAL_MEMORY))) {
 702                         ERR_MSG("cannot allocate ring buffer memory\n");
 703                         agp_backend_release(bridge);
 704                         cleanup(dinfo);
 705                         return -ENOMEM;
 706                 }
 707                 if (agp_bind_memory(dinfo->gtt_ring_mem,
 708                                     dinfo->ring.offset)) {
 709                         ERR_MSG("cannot bind ring buffer memory\n");
 710                         agp_backend_release(bridge);
 711                         cleanup(dinfo);
 712                         return -EBUSY;
 713                 }
 714                 dinfo->ring.physical = dinfo->aperture.physical
 715                         + (dinfo->ring.offset << 12);
 716                 dinfo->ring.virtual  = dinfo->aperture.virtual
 717                         + (dinfo->ring.offset << 12);
 718                 dinfo->ring_head = 0;
 719         }
 720         if (dinfo->hwcursor) {
 721                 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
 722                         : AGP_NORMAL_MEMORY;
 723                 if (!(dinfo->gtt_cursor_mem =
 724                       agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
 725                                           agp_memtype))) {
 726                         ERR_MSG("cannot allocate cursor memory\n");
 727                         agp_backend_release(bridge);
 728                         cleanup(dinfo);
 729                         return -ENOMEM;
 730                 }
 731                 if (agp_bind_memory(dinfo->gtt_cursor_mem,
 732                                     dinfo->cursor.offset)) {
 733                         ERR_MSG("cannot bind cursor memory\n");
 734                         agp_backend_release(bridge);
 735                         cleanup(dinfo);
 736                         return -EBUSY;
 737                 }
 738                 if (dinfo->mobile)
 739                         dinfo->cursor.physical
 740                                 = dinfo->gtt_cursor_mem->physical;
 741                 else
 742                         dinfo->cursor.physical = dinfo->aperture.physical
 743                                 + (dinfo->cursor.offset << 12);
 744                 dinfo->cursor.virtual = dinfo->aperture.virtual
 745                         + (dinfo->cursor.offset << 12);
 746         }
 747         if (dinfo->fbmem_gart) {
 748                 if (!(dinfo->gtt_fb_mem =
 749                       agp_allocate_memory(bridge, dinfo->fb.size >> 12,
 750                                           AGP_NORMAL_MEMORY))) {
 751                         WRN_MSG("cannot allocate framebuffer memory - use "
 752                                 "the stolen one\n");
 753                         dinfo->fbmem_gart = 0;
 754                 }
 755                 if (agp_bind_memory(dinfo->gtt_fb_mem,
 756                                     dinfo->fb.offset)) {
 757                         WRN_MSG("cannot bind framebuffer memory - use "
 758                                 "the stolen one\n");
 759                         dinfo->fbmem_gart = 0;
 760                 }
 761         }
 762
 763         /* update framebuffer memory parameters */
 764         if (!dinfo->fbmem_gart)
 765                 dinfo->fb.offset = 0;   /* starts at offset 0 */
 766         dinfo->fb.physical = dinfo->aperture.physical
 767                 + (dinfo->fb.offset << 12);
 768         dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
 769         dinfo->fb_start = dinfo->fb.offset << 12;
 770
 771         /* release agpgart */
 772         agp_backend_release(bridge);
 773
 774         if (mtrr)
 775                 set_mtrr(dinfo);
 776
 777         DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
 778                 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
 779                 dinfo->fb.virtual);
 780         DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
 781                 dinfo->mmio_base_phys, INTEL_REG_SIZE,
 782                 dinfo->mmio_base);
 783         DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
 784                 dinfo->ring.physical, dinfo->ring.size,
 785                 dinfo->ring.virtual);
 786         DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
 787                 dinfo->cursor.physical, dinfo->cursor.size,
 788                 dinfo->cursor.virtual, dinfo->cursor.offset,
 789                 dinfo->cursor.physical);
 790
 791         DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
 792                 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
 793         DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
 794
 795         if (probeonly)
 796                 bailout(dinfo);
 797
 798         /*
 799          * Check if the LVDS port or any DVO ports are enabled.  If so,
 800          * don't allow mode switching
 801          */
 802         dvo = intelfbhw_check_non_crt(dinfo);
 803         if (dvo) {
 804                 dinfo->fixed_mode = 1;
 805                 WRN_MSG("Non-CRT device is enabled ( ");
 806                 i = 0;
 807                 while (dvo) {
 808                         if (dvo & 1) {
 809                                 s = intelfbhw_dvo_to_string(1 << i);
 810                                 if (s)
 811                                         printk("%s ", s);
 812                         }
 813                         dvo >>= 1;
 814                         ++i;
 815                 }
 816                 printk(").  Disabling mode switching.\n");
 817         }
 818
 819         if (bailearly == 1)
 820                 bailout(dinfo);
 821
 822         if (FIXED_MODE(dinfo) &&
 823             screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
 824                 ERR_MSG("Video mode must be programmed at boot time.\n");
 825                 cleanup(dinfo);
 826                 return -ENODEV;
 827         }
 828
 829         if (bailearly == 2)
 830                 bailout(dinfo);
 831
 832         /* Initialise dinfo and related data. */
 833         /* If an initial mode was programmed at boot time, get its details. */
 834         if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
 835                 get_initial_mode(dinfo);
 836
 837         if (bailearly == 3)
 838                 bailout(dinfo);
 839
 840         if (FIXED_MODE(dinfo))  /* remap fb address */
 841                 update_dinfo(dinfo, &dinfo->initial_var);
 842
 843         if (bailearly == 4)
 844                 bailout(dinfo);
 845
 846
 847         if (intelfb_set_fbinfo(dinfo)) {
 848                 cleanup(dinfo);
 849                 return -ENODEV;
 850         }
 851
 852         if (bailearly == 5)
 853                 bailout(dinfo);
 854
 855 #ifdef CONFIG_FB_INTEL_I2C
 856         /* register I2C bus */
 857         intelfb_create_i2c_busses(dinfo);
 858 #endif
 859
 860         if (bailearly == 6)
 861                 bailout(dinfo);
 862
 863         pci_set_drvdata(pdev, dinfo);
 864
 865         /* Save the initial register state. */
 866         i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
 867                                     bailearly > 6 ? bailearly - 6 : 0);
 868         if (i != 0) {
 869                 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
 870                 bailout(dinfo);
 871         }
 872
 873         intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
 874
 875         if (bailearly == 18)
 876                 bailout(dinfo);
 877
 878         /* read active pipe */
 879         dinfo->pipe = intelfbhw_active_pipe(&dinfo->save_state);
 880
 881         /* Cursor initialisation */
 882         if (dinfo->hwcursor) {
 883                 intelfbhw_cursor_init(dinfo);
 884                 intelfbhw_cursor_reset(dinfo);
 885         }
 886
 887         if (bailearly == 19)
 888                 bailout(dinfo);
 889
 890         /* 2d acceleration init */
 891         if (dinfo->accel)
 892                 intelfbhw_2d_start(dinfo);
 893
 894         if (bailearly == 20)
 895                 bailout(dinfo);
 896
 897         if (noregister)
 898                 bailout(dinfo);
 899
 900         if (register_framebuffer(dinfo->info) < 0) {
 901                 ERR_MSG("Cannot register framebuffer.\n");
 902                 cleanup(dinfo);
 903                 return -ENODEV;
 904         }
 905
 906         dinfo->registered = 1;
 907         dinfo->open = 0;
 908
 909         init_waitqueue_head(&dinfo->vsync.wait);
 910         spin_lock_init(&dinfo->int_lock);
 911         dinfo->irq_flags = 0;
 912         dinfo->vsync.pan_display = 0;
 913         dinfo->vsync.pan_offset = 0;
 914
 915         return 0;
 916
 917 err_out_pixmap:
 918         fb_dealloc_cmap(&info->cmap);
 919 err_out_cmap:
 920         framebuffer_release(info);
 921         return -ENODEV;
 922 }
 923
 924 static void intelfb_pci_unregister(struct pci_dev *pdev)
 925 {
 926         struct intelfb_info *dinfo = pci_get_drvdata(pdev);
 927
 928         DBG_MSG("intelfb_pci_unregister\n");
 929
 930         if (!dinfo)
 931                 return;
 932
 933         cleanup(dinfo);
 934 }
 935
 936 /***************************************************************
 937  *                       helper functions                      *
 938  ***************************************************************/
 939
 940 int __inline__ intelfb_var_to_depth(const struct fb_var_screeninfo *var)
 941 {
 942         DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
 943                 var->bits_per_pixel, var->green.length);
 944
 945         switch (var->bits_per_pixel) {
 946         case 16:
 947                 return (var->green.length == 6) ? 16 : 15;
 948         case 32:
 949                 return 24;
 950         default:
 951                 return var->bits_per_pixel;
 952         }
 953 }
 954
 955
 956 static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
 957 {
 958         int xtot = var->xres + var->left_margin + var->right_margin +
 959                    var->hsync_len;
 960         int ytot = var->yres + var->upper_margin + var->lower_margin +
 961                    var->vsync_len;
 962
 963         return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
 964 }
 965
 966 /***************************************************************
 967  *                Various intialisation functions              *
 968  ***************************************************************/
 969
 970 static void get_initial_mode(struct intelfb_info *dinfo)
 971 {
 972         struct fb_var_screeninfo *var;
 973         int xtot, ytot;
 974
 975         DBG_MSG("get_initial_mode\n");
 976
 977         dinfo->initial_vga = 1;
 978         dinfo->initial_fb_base = screen_info.lfb_base;
 979         dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
 980         dinfo->initial_pitch = screen_info.lfb_linelength;
 981
 982         var = &dinfo->initial_var;
 983         memset(var, 0, sizeof(*var));
 984         var->xres = screen_info.lfb_width;
 985         var->yres = screen_info.lfb_height;
 986         var->bits_per_pixel = screen_info.lfb_depth;
 987         switch (screen_info.lfb_depth) {
 988         case 15:
 989                 var->bits_per_pixel = 16;
 990                 break;
 991         case 24:
 992                 var->bits_per_pixel = 32;
 993                 break;
 994         }
 995
 996         DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
 997                 dinfo->initial_fb_base, dinfo->initial_video_ram,
 998                 BtoKB(dinfo->initial_video_ram));
 999
1000         DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
1001                 var->xres, var->yres, var->bits_per_pixel,
1002                 dinfo->initial_pitch);
1003
1004         /* Dummy timing values (assume 60Hz) */
1005         var->left_margin = (var->xres / 8) & 0xf8;
1006         var->right_margin = 32;
1007         var->upper_margin = 16;
1008         var->lower_margin = 4;
1009         var->hsync_len = (var->xres / 8) & 0xf8;
1010         var->vsync_len = 4;
1011
1012         xtot = var->xres + var->left_margin +
1013                 var->right_margin + var->hsync_len;
1014         ytot = var->yres + var->upper_margin +
1015                 var->lower_margin + var->vsync_len;
1016         var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1017
1018         var->height = -1;
1019         var->width = -1;
1020
1021         if (var->bits_per_pixel > 8) {
1022                 var->red.offset = screen_info.red_pos;
1023                 var->red.length = screen_info.red_size;
1024                 var->green.offset = screen_info.green_pos;
1025                 var->green.length = screen_info.green_size;
1026                 var->blue.offset = screen_info.blue_pos;
1027                 var->blue.length = screen_info.blue_size;
1028                 var->transp.offset = screen_info.rsvd_pos;
1029                 var->transp.length = screen_info.rsvd_size;
1030         } else {
1031                 var->red.length = 8;
1032                 var->green.length = 8;
1033                 var->blue.length = 8;
1034         }
1035 }
1036
1037 static int intelfb_init_var(struct intelfb_info *dinfo)
1038 {
1039         struct fb_var_screeninfo *var;
1040         int msrc = 0;
1041
1042         DBG_MSG("intelfb_init_var\n");
1043
1044         var = &dinfo->info->var;
1045         if (FIXED_MODE(dinfo)) {
1046                 memcpy(var, &dinfo->initial_var,
1047                        sizeof(struct fb_var_screeninfo));
1048                 msrc = 5;
1049         } else {
1050                 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1051                 u8 *edid_d = NULL;
1052
1053                 if (edid_s) {
1054                         edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1055
1056                         if (edid_d) {
1057                                 fb_edid_to_monspecs(edid_d,
1058                                                     &dinfo->info->monspecs);
1059                                 kfree(edid_d);
1060                         }
1061                 }
1062
1063                 if (mode) {
1064                         printk("intelfb: Looking for mode in private "
1065                                "database\n");
1066                         msrc = fb_find_mode(var, dinfo->info, mode,
1067                                             dinfo->info->monspecs.modedb,
1068                                             dinfo->info->monspecs.modedb_len,
1069                                             NULL, 0);
1070
1071                         if (msrc && msrc > 1) {
1072                                 printk("intelfb: No mode in private database, "
1073                                        "intelfb: looking for mode in global "
1074                                        "database ");
1075                                 msrc = fb_find_mode(var, dinfo->info, mode,
1076                                                     NULL, 0, NULL, 0);
1077
1078                                 if (msrc)
1079                                         msrc |= 8;
1080                         }
1081
1082                 }
1083
1084                 if (!msrc)
1085                         msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1086                                             NULL, 0, NULL, 0);
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 intelfb_set_fbinfo(struct intelfb_info *dinfo)
1119 {
1120         struct fb_info *info = dinfo->info;
1121
1122         DBG_MSG("intelfb_set_fbinfo\n");
1123
1124         info->flags = FBINFO_FLAG_DEFAULT;
1125         info->fbops = &intel_fb_ops;
1126         info->pseudo_palette = dinfo->pseudo_palette;
1127
1128         info->pixmap.size = 64*1024;
1129         info->pixmap.buf_align = 8;
1130         info->pixmap.access_align = 32;
1131         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1132
1133         if (intelfb_init_var(dinfo))
1134                 return 1;
1135
1136         info->pixmap.scan_align = 1;
1137         strcpy(info->fix.id, dinfo->name);
1138         info->fix.smem_start = dinfo->fb.physical;
1139         info->fix.smem_len = dinfo->fb.size;
1140         info->fix.type = FB_TYPE_PACKED_PIXELS;
1141         info->fix.type_aux = 0;
1142         info->fix.xpanstep = 8;
1143         info->fix.ypanstep = 1;
1144         info->fix.ywrapstep = 0;
1145         info->fix.mmio_start = dinfo->mmio_base_phys;
1146         info->fix.mmio_len = INTEL_REG_SIZE;
1147         info->fix.accel = FB_ACCEL_I830;
1148         update_dinfo(dinfo, &info->var);
1149
1150         return 0;
1151 }
1152
1153 /* Update dinfo to match the active video mode. */
1154 static void update_dinfo(struct intelfb_info *dinfo,
1155                          struct fb_var_screeninfo *var)
1156 {
1157         DBG_MSG("update_dinfo\n");
1158
1159         dinfo->bpp = var->bits_per_pixel;
1160         dinfo->depth = intelfb_var_to_depth(var);
1161         dinfo->xres = var->xres;
1162         dinfo->yres = var->xres;
1163         dinfo->pixclock = var->pixclock;
1164
1165         dinfo->info->fix.visual = dinfo->visual;
1166         dinfo->info->fix.line_length = dinfo->pitch;
1167
1168         switch (dinfo->bpp) {
1169         case 8:
1170                 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1171                 dinfo->pitch = var->xres_virtual;
1172                 break;
1173         case 16:
1174                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1175                 dinfo->pitch = var->xres_virtual * 2;
1176                 break;
1177         case 32:
1178                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1179                 dinfo->pitch = var->xres_virtual * 4;
1180                 break;
1181         }
1182
1183         /* Make sure the line length is a aligned correctly. */
1184         if (IS_I9XX(dinfo))
1185                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1186         else
1187                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1188
1189         if (FIXED_MODE(dinfo))
1190                 dinfo->pitch = dinfo->initial_pitch;
1191
1192         dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1193         dinfo->info->fix.line_length = dinfo->pitch;
1194         dinfo->info->fix.visual = dinfo->visual;
1195 }
1196
1197 /* fbops functions */
1198
1199 /***************************************************************
1200  *                       fbdev interface                       *
1201  ***************************************************************/
1202
1203 static int intelfb_open(struct fb_info *info, int user)
1204 {
1205         struct intelfb_info *dinfo = GET_DINFO(info);
1206
1207         if (user)
1208                 dinfo->open++;
1209
1210         return 0;
1211 }
1212
1213 static int intelfb_release(struct fb_info *info, int user)
1214 {
1215         struct intelfb_info *dinfo = GET_DINFO(info);
1216
1217         if (user) {
1218                 dinfo->open--;
1219                 msleep(1);
1220                 if (!dinfo->open)
1221                         intelfbhw_disable_irq(dinfo);
1222         }
1223
1224         return 0;
1225 }
1226
1227 static int intelfb_check_var(struct fb_var_screeninfo *var,
1228                              struct fb_info *info)
1229 {
1230         int change_var = 0;
1231         struct fb_var_screeninfo v;
1232         struct intelfb_info *dinfo;
1233         static int first = 1;
1234         int i;
1235         /* Good pitches to allow tiling.  Don't care about pitches < 1024. */
1236         static const int pitches[] = {
1237                 128 * 8,
1238                 128 * 16,
1239                 128 * 32,
1240                 128 * 64,
1241                 0
1242         };
1243
1244         DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1245
1246         dinfo = GET_DINFO(info);
1247
1248         /* update the pitch */
1249         if (intelfbhw_validate_mode(dinfo, var) != 0)
1250                 return -EINVAL;
1251
1252         v = *var;
1253
1254         for (i = 0; pitches[i] != 0; i++) {
1255                 if (pitches[i] >= v.xres_virtual) {
1256                         v.xres_virtual = pitches[i];
1257                         break;
1258                 }
1259         }
1260
1261         /* Check for a supported bpp. */
1262         if (v.bits_per_pixel <= 8)
1263                 v.bits_per_pixel = 8;
1264         else if (v.bits_per_pixel <= 16) {
1265                 if (v.bits_per_pixel == 16)
1266                         v.green.length = 6;
1267                 v.bits_per_pixel = 16;
1268         } else if (v.bits_per_pixel <= 32)
1269                 v.bits_per_pixel = 32;
1270         else
1271                 return -EINVAL;
1272
1273         change_var = ((info->var.xres != var->xres) ||
1274                       (info->var.yres != var->yres) ||
1275                       (info->var.xres_virtual != var->xres_virtual) ||
1276                       (info->var.yres_virtual != var->yres_virtual) ||
1277                       (info->var.bits_per_pixel != var->bits_per_pixel) ||
1278                       memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1279                       memcmp(&info->var.green, &var->green,
1280                              sizeof(var->green)) ||
1281                       memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1282
1283         if (FIXED_MODE(dinfo) &&
1284             (change_var ||
1285              var->yres_virtual > dinfo->initial_var.yres_virtual ||
1286              var->yres_virtual < dinfo->initial_var.yres ||
1287              var->xoffset || var->nonstd)) {
1288                 if (first) {
1289                         ERR_MSG("Changing the video mode is not supported.\n");
1290                         first = 0;
1291                 }
1292                 return -EINVAL;
1293         }
1294
1295         switch (intelfb_var_to_depth(&v)) {
1296         case 8:
1297                 v.red.offset = v.green.offset = v.blue.offset = 0;
1298                 v.red.length = v.green.length = v.blue.length = 8;
1299                 v.transp.offset = v.transp.length = 0;
1300                 break;
1301         case 15:
1302                 v.red.offset = 10;
1303                 v.green.offset = 5;
1304                 v.blue.offset = 0;
1305                 v.red.length = v.green.length = v.blue.length = 5;
1306                 v.transp.offset = v.transp.length = 0;
1307                 break;
1308         case 16:
1309                 v.red.offset = 11;
1310                 v.green.offset = 5;
1311                 v.blue.offset = 0;
1312                 v.red.length = 5;
1313                 v.green.length = 6;
1314                 v.blue.length = 5;
1315                 v.transp.offset = v.transp.length = 0;
1316                 break;
1317         case 24:
1318                 v.red.offset = 16;
1319                 v.green.offset = 8;
1320                 v.blue.offset = 0;
1321                 v.red.length = v.green.length = v.blue.length = 8;
1322                 v.transp.offset = v.transp.length = 0;
1323                 break;
1324         case 32:
1325                 v.red.offset = 16;
1326                 v.green.offset = 8;
1327                 v.blue.offset = 0;
1328                 v.red.length = v.green.length = v.blue.length = 8;
1329                 v.transp.offset = 24;
1330                 v.transp.length = 8;
1331                 break;
1332         }
1333
1334         if (v.xoffset < 0)
1335                 v.xoffset = 0;
1336         if (v.yoffset < 0)
1337                 v.yoffset = 0;
1338
1339         if (v.xoffset > v.xres_virtual - v.xres)
1340                 v.xoffset = v.xres_virtual - v.xres;
1341         if (v.yoffset > v.yres_virtual - v.yres)
1342                 v.yoffset = v.yres_virtual - v.yres;
1343
1344         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1345                           v.transp.msb_right = 0;
1346
1347         *var = v;
1348
1349         return 0;
1350 }
1351
1352 static int intelfb_set_par(struct fb_info *info)
1353 {
1354         struct intelfb_hwstate *hw;
1355         struct intelfb_info *dinfo = GET_DINFO(info);
1356
1357         if (FIXED_MODE(dinfo)) {
1358                 ERR_MSG("Changing the video mode is not supported.\n");
1359                 return -EINVAL;
1360         }
1361
1362         hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1363         if (!hw)
1364                 return -ENOMEM;
1365
1366         DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1367                 info->var.yres, info->var.bits_per_pixel);
1368
1369         /*
1370          * Disable VCO prior to timing register change.
1371          */
1372         OUTREG(DPLL_A, INREG(DPLL_A) & ~DPLL_VCO_ENABLE);
1373
1374         intelfb_blank(FB_BLANK_POWERDOWN, info);
1375
1376         if (ACCEL(dinfo, info))
1377                 intelfbhw_2d_stop(dinfo);
1378
1379         memcpy(hw, &dinfo->save_state, sizeof(*hw));
1380         if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1381                 goto invalid_mode;
1382         if (intelfbhw_program_mode(dinfo, hw, 0))
1383                 goto invalid_mode;
1384
1385 #if REGDUMP > 0
1386         intelfbhw_read_hw_state(dinfo, hw, 0);
1387         intelfbhw_print_hw_state(dinfo, hw);
1388 #endif
1389
1390         update_dinfo(dinfo, &info->var);
1391
1392         if (ACCEL(dinfo, info))
1393                 intelfbhw_2d_start(dinfo);
1394
1395         intelfb_pan_display(&info->var, info);
1396
1397         intelfb_blank(FB_BLANK_UNBLANK, info);
1398
1399         if (ACCEL(dinfo, info)) {
1400                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1401                 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1402                 FBINFO_HWACCEL_IMAGEBLIT;
1403         } else
1404                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1405
1406         kfree(hw);
1407         return 0;
1408 invalid_mode:
1409         kfree(hw);
1410         return -EINVAL;
1411 }
1412
1413 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1414                              unsigned blue, unsigned transp,
1415                              struct fb_info *info)
1416 {
1417         struct intelfb_info *dinfo = GET_DINFO(info);
1418
1419 #if VERBOSE > 0
1420         DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1421 #endif
1422
1423         if (regno > 255)
1424                 return 1;
1425
1426         if (dinfo->depth == 8) {
1427                 red >>= 8;
1428                 green >>= 8;
1429                 blue >>= 8;
1430
1431                 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1432                                     transp);
1433         }
1434
1435         if (regno < 16) {
1436                 switch (dinfo->depth) {
1437                 case 15:
1438                         dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1439                                 ((green & 0xf800) >>  6) |
1440                                 ((blue & 0xf800) >> 11);
1441                         break;
1442                 case 16:
1443                         dinfo->pseudo_palette[regno] = (red & 0xf800) |
1444                                 ((green & 0xfc00) >>  5) |
1445                                 ((blue  & 0xf800) >> 11);
1446                         break;
1447                 case 24:
1448                         dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1449                                 (green & 0xff00) |
1450                                 ((blue  & 0xff00) >> 8);
1451                         break;
1452                 }
1453         }
1454
1455         return 0;
1456 }
1457
1458 static int intelfb_blank(int blank, struct fb_info *info)
1459 {
1460         intelfbhw_do_blank(blank, info);
1461         return 0;
1462 }
1463
1464 static int intelfb_pan_display(struct fb_var_screeninfo *var,
1465                                struct fb_info *info)
1466 {
1467         intelfbhw_pan_display(var, info);
1468         return 0;
1469 }
1470
1471 /* When/if we have our own ioctls. */
1472 static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1473                          unsigned long arg)
1474 {
1475         int retval = 0;
1476         struct intelfb_info *dinfo = GET_DINFO(info);
1477         u32 pipe = 0;
1478
1479         switch (cmd) {
1480                 case FBIO_WAITFORVSYNC:
1481                         if (get_user(pipe, (__u32 __user *)arg))
1482                                 return -EFAULT;
1483
1484                         retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1485                         break;
1486                 default:
1487                         break;
1488         }
1489
1490         return retval;
1491 }
1492
1493 static void intelfb_fillrect (struct fb_info *info,
1494                               const struct fb_fillrect *rect)
1495 {
1496         struct intelfb_info *dinfo = GET_DINFO(info);
1497         u32 rop, color;
1498
1499 #if VERBOSE > 0
1500         DBG_MSG("intelfb_fillrect\n");
1501 #endif
1502
1503         if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1504                 cfb_fillrect(info, rect);
1505                 return;
1506         }
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 intelfb_copyarea(struct fb_info *info,
1525                              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                 cfb_copyarea(info, region);
1535                 return;
1536         }
1537
1538         intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1539                             region->dy, region->width, region->height,
1540                             dinfo->pitch, info->var.bits_per_pixel);
1541 }
1542
1543 static void intelfb_imageblit(struct fb_info *info,
1544                               const struct fb_image *image)
1545 {
1546         struct intelfb_info *dinfo = GET_DINFO(info);
1547         u32 fgcolor, bgcolor;
1548
1549 #if VERBOSE > 0
1550         DBG_MSG("intelfb_imageblit\n");
1551 #endif
1552
1553         if (!ACCEL(dinfo, info) || dinfo->depth == 4
1554             || image->depth != 1) {
1555                 cfb_imageblit(info, image);
1556                 return;
1557         }
1558
1559         if (dinfo->depth != 8) {
1560                 fgcolor = dinfo->pseudo_palette[image->fg_color];
1561                 bgcolor = dinfo->pseudo_palette[image->bg_color];
1562         } else {
1563                 fgcolor = image->fg_color;
1564                 bgcolor = image->bg_color;
1565         }
1566
1567         if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1568                                     image->height, image->data,
1569                                     image->dx, image->dy,
1570                                     dinfo->pitch, info->var.bits_per_pixel)) {
1571                 cfb_imageblit(info, image);
1572                 return;
1573         }
1574 }
1575
1576 static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1577 {
1578         struct intelfb_info *dinfo = GET_DINFO(info);
1579         u32 physical;
1580 #if VERBOSE > 0
1581         DBG_MSG("intelfb_cursor\n");
1582 #endif
1583
1584         if (!dinfo->hwcursor)
1585                 return -ENODEV;
1586
1587         intelfbhw_cursor_hide(dinfo);
1588
1589         /* If XFree killed the cursor - restore it */
1590         physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1591                    (dinfo->cursor.offset << 12);
1592
1593         if (INREG(CURSOR_A_BASEADDR) != physical) {
1594                 u32 fg, bg;
1595
1596                 DBG_MSG("the cursor was killed - restore it !!\n");
1597                 DBG_MSG("size %d, %d   pos %d, %d\n",
1598                         cursor->image.width, cursor->image.height,
1599                         cursor->image.dx, cursor->image.dy);
1600
1601                 intelfbhw_cursor_init(dinfo);
1602                 intelfbhw_cursor_reset(dinfo);
1603                 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1604                                         cursor->image.dy);
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                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1614                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1615                                       cursor->image.height,
1616                                       dinfo->cursor_src);
1617
1618                 if (cursor->enable)
1619                         intelfbhw_cursor_show(dinfo);
1620                 return 0;
1621         }
1622
1623         if (cursor->set & FB_CUR_SETPOS) {
1624                 u32 dx, dy;
1625
1626                 dx = cursor->image.dx - info->var.xoffset;
1627                 dy = cursor->image.dy - info->var.yoffset;
1628
1629                 intelfbhw_cursor_setpos(dinfo, dx, dy);
1630         }
1631
1632         if (cursor->set & FB_CUR_SETSIZE) {
1633                 if (cursor->image.width > 64 || cursor->image.height > 64)
1634                         return -ENXIO;
1635
1636                 intelfbhw_cursor_reset(dinfo);
1637         }
1638
1639         if (cursor->set & FB_CUR_SETCMAP) {
1640                 u32 fg, bg;
1641
1642                 if (dinfo->depth != 8) {
1643                         fg = dinfo->pseudo_palette[cursor->image.fg_color];
1644                         bg = dinfo->pseudo_palette[cursor->image.bg_color];
1645                 } else {
1646                         fg = cursor->image.fg_color;
1647                         bg = cursor->image.bg_color;
1648                 }
1649
1650                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1651         }
1652
1653         if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1654                 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1655                 u32 size = s_pitch * cursor->image.height;
1656                 u8 *dat = (u8 *) cursor->image.data;
1657                 u8 *msk = (u8 *) cursor->mask;
1658                 u8 src[64];
1659                 u32 i;
1660
1661                 if (cursor->image.depth != 1)
1662                         return -ENXIO;
1663
1664                 switch (cursor->rop) {
1665                 case ROP_XOR:
1666                         for (i = 0; i < size; i++)
1667                                 src[i] = dat[i] ^ msk[i];
1668                         break;
1669                 case ROP_COPY:
1670                 default:
1671                         for (i = 0; i < size; i++)
1672                                 src[i] = dat[i] & msk[i];
1673                         break;
1674                 }
1675
1676                 /* save the bitmap to restore it when XFree will
1677                    make the cursor dirty */
1678                 memcpy(dinfo->cursor_src, src, size);
1679
1680                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1681                                       cursor->image.height, src);
1682         }
1683
1684         if (cursor->enable)
1685                 intelfbhw_cursor_show(dinfo);
1686
1687         return 0;
1688 }
1689
1690 static int intelfb_sync(struct fb_info *info)
1691 {
1692         struct intelfb_info *dinfo = GET_DINFO(info);
1693
1694 #if VERBOSE > 0
1695         DBG_MSG("intelfb_sync\n");
1696 #endif
1697
1698         if (dinfo->ring_lockup)
1699                 return 0;
1700
1701         intelfbhw_do_sync(dinfo);
1702         return 0;
1703 }
1704