drivers/video/intelfb/intelfbdrv.c

   1 /*
   2  * intelfb
   3  *
   4  * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM/
   5  * 945G/945GM/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
 107 #include <linux/module.h>
 108 #include <linux/kernel.h>
 109 #include <linux/errno.h>
 110 #include <linux/string.h>
 111 #include <linux/mm.h>
 112 #include <linux/slab.h>
 113 #include <linux/delay.h>
 114 #include <linux/fb.h>
 115 #include <linux/ioport.h>
 116 #include <linux/init.h>
 117 #include <linux/pci.h>
 118 #include <linux/vmalloc.h>
 119 #include <linux/pagemap.h>
 120 #include <linux/screen_info.h>
 121
 122 #include <asm/io.h>
 123
 124 #ifdef CONFIG_MTRR
 125 #include <asm/mtrr.h>
 126 #endif
 127
 128 #include "intelfb.h"
 129 #include "intelfbhw.h"
 130 #include "../edid.h"
 131
 132 static void __devinit get_initial_mode(struct intelfb_info *dinfo);
 133 static void update_dinfo(struct intelfb_info *dinfo,
 134                          struct fb_var_screeninfo *var);
 135 static int intelfb_open(struct fb_info *info, int user);
 136 static int intelfb_release(struct fb_info *info, int user);
 137 static int intelfb_check_var(struct fb_var_screeninfo *var,
 138                              struct fb_info *info);
 139 static int intelfb_set_par(struct fb_info *info);
 140 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 141                              unsigned blue, unsigned transp,
 142                              struct fb_info *info);
 143
 144 static int intelfb_blank(int blank, struct fb_info *info);
 145 static int intelfb_pan_display(struct fb_var_screeninfo *var,
 146                                struct fb_info *info);
 147
 148 static void intelfb_fillrect(struct fb_info *info,
 149                              const struct fb_fillrect *rect);
 150 static void intelfb_copyarea(struct fb_info *info,
 151                              const struct fb_copyarea *region);
 152 static void intelfb_imageblit(struct fb_info *info,
 153                               const struct fb_image *image);
 154 static int intelfb_cursor(struct fb_info *info,
 155                            struct fb_cursor *cursor);
 156
 157 static int intelfb_sync(struct fb_info *info);
 158
 159 static int intelfb_ioctl(struct fb_info *info,
 160                          unsigned int cmd, unsigned long arg);
 161
 162 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
 163                                           const struct pci_device_id *ent);
 164 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
 165 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
 166
 167 /*
 168  * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
 169  * mobile chipsets from being registered.
 170  */
 171 #if DETECT_VGA_CLASS_ONLY
 172 #define INTELFB_CLASS_MASK ~0 << 8
 173 #else
 174 #define INTELFB_CLASS_MASK 0
 175 #endif
 176
 177 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
 178         { 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 },
 179         { 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 },
 180         { 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 },
 181         { 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 },
 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_965G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965G },
 187         { 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 },
 188         { 0, }
 189 };
 190
 191 /* Global data */
 192 static int num_registered = 0;
 193
 194 /* fb ops */
 195 static struct fb_ops intel_fb_ops = {
 196         .owner =                THIS_MODULE,
 197         .fb_open =              intelfb_open,
 198         .fb_release =           intelfb_release,
 199         .fb_check_var =         intelfb_check_var,
 200         .fb_set_par =           intelfb_set_par,
 201         .fb_setcolreg =         intelfb_setcolreg,
 202         .fb_blank =             intelfb_blank,
 203         .fb_pan_display =       intelfb_pan_display,
 204         .fb_fillrect  =         intelfb_fillrect,
 205         .fb_copyarea  =         intelfb_copyarea,
 206         .fb_imageblit =         intelfb_imageblit,
 207         .fb_cursor =            intelfb_cursor,
 208         .fb_sync =              intelfb_sync,
 209         .fb_ioctl =             intelfb_ioctl
 210 };
 211
 212 /* PCI driver module table */
 213 static struct pci_driver intelfb_driver = {
 214         .name =         "intelfb",
 215         .id_table =     intelfb_pci_table,
 216         .probe =        intelfb_pci_register,
 217         .remove =       __devexit_p(intelfb_pci_unregister)
 218 };
 219
 220 /* Module description/parameters */
 221 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
 222               "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
 223 MODULE_DESCRIPTION("Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS
 224                    " chipsets");
 225 MODULE_LICENSE("Dual BSD/GPL");
 226 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
 227
 228 static int accel        = 1;
 229 static int vram         = 4;
 230 static int hwcursor     = 0;
 231 static int mtrr         = 1;
 232 static int fixed        = 0;
 233 static int noinit       = 0;
 234 static int noregister   = 0;
 235 static int probeonly    = 0;
 236 static int idonly       = 0;
 237 static int bailearly    = 0;
 238 static int voffset      = 48;
 239 static char *mode       = NULL;
 240
 241 module_param(accel, bool, S_IRUGO);
 242 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
 243 module_param(vram, int, S_IRUGO);
 244 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
 245 module_param(voffset, int, S_IRUGO);
 246 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
 247 module_param(hwcursor, bool, S_IRUGO);
 248 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
 249 module_param(mtrr, bool, S_IRUGO);
 250 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
 251 module_param(fixed, bool, S_IRUGO);
 252 MODULE_PARM_DESC(fixed, "Disable mode switching");
 253 module_param(noinit, bool, 0);
 254 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
 255 module_param(noregister, bool, 0);
 256 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
 257 module_param(probeonly, bool, 0);
 258 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
 259 module_param(idonly, bool, 0);
 260 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
 261 module_param(bailearly, bool, 0);
 262 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
 263 module_param(mode, charp, S_IRUGO);
 264 MODULE_PARM_DESC(mode,
 265                  "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
 266
 267 #ifndef MODULE
 268 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
 269 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
 270 #define OPT_STRVAL(opt, name) (opt + strlen(name))
 271
 272 static __inline__ char * get_opt_string(const char *this_opt, const char *name)
 273 {
 274         const char *p;
 275         int i;
 276         char *ret;
 277
 278         p = OPT_STRVAL(this_opt, name);
 279         i = 0;
 280         while (p[i] && p[i] != ' ' && p[i] != ',')
 281                 i++;
 282         ret = kmalloc(i + 1, GFP_KERNEL);
 283         if (ret) {
 284                 strncpy(ret, p, i);
 285                 ret[i] = '\0';
 286         }
 287         return ret;
 288 }
 289
 290 static __inline__ int get_opt_int(const char *this_opt, const char *name,
 291                                   int *ret)
 292 {
 293         if (!ret)
 294                 return 0;
 295
 296         if (!OPT_EQUAL(this_opt, name))
 297                 return 0;
 298
 299         *ret = OPT_INTVAL(this_opt, name);
 300         return 1;
 301 }
 302
 303 static __inline__ int get_opt_bool(const char *this_opt, const char *name,
 304                                    int *ret)
 305 {
 306         if (!ret)
 307                 return 0;
 308
 309         if (OPT_EQUAL(this_opt, name)) {
 310                 if (this_opt[strlen(name)] == '=')
 311                         *ret = simple_strtoul(this_opt + strlen(name) + 1,
 312                                               NULL, 0);
 313                 else
 314                         *ret = 1;
 315         } else {
 316                 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
 317                         *ret = 0;
 318                 else
 319                         return 0;
 320         }
 321         return 1;
 322 }
 323
 324 static int __init intelfb_setup(char *options)
 325 {
 326         char *this_opt;
 327
 328         DBG_MSG("intelfb_setup\n");
 329
 330         if (!options || !*options) {
 331                 DBG_MSG("no options\n");
 332                 return 0;
 333         } else
 334                 DBG_MSG("options: %s\n", options);
 335
 336         /*
 337          * These are the built-in options analogous to the module parameters
 338          * defined above.
 339          *
 340          * The syntax is:
 341          *
 342          *    video=intelfb:[mode][,<param>=<val>] ...
 343          *
 344          * e.g.,
 345          *
 346          *    video=intelfb:1024x768-16@75,accel=0
 347          */
 348
 349         while ((this_opt = strsep(&options, ","))) {
 350                 if (!*this_opt)
 351                         continue;
 352                 if (get_opt_bool(this_opt, "accel", &accel))
 353                         ;
 354                 else if (get_opt_int(this_opt, "vram", &vram))
 355                         ;
 356                 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
 357                         ;
 358                 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
 359                         ;
 360                 else if (get_opt_bool(this_opt, "fixed", &fixed))
 361                         ;
 362                 else if (get_opt_bool(this_opt, "init", &noinit))
 363                         noinit = !noinit;
 364                 else if (OPT_EQUAL(this_opt, "mode="))
 365                         mode = get_opt_string(this_opt, "mode=");
 366                 else
 367                         mode = this_opt;
 368         }
 369
 370         return 0;
 371 }
 372
 373 #endif
 374
 375 static int __init intelfb_init(void)
 376 {
 377 #ifndef MODULE
 378         char *option = NULL;
 379 #endif
 380
 381         DBG_MSG("intelfb_init\n");
 382
 383         INF_MSG("Framebuffer driver for "
 384                 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
 385         INF_MSG("Version " INTELFB_VERSION "\n");
 386
 387         if (idonly)
 388                 return -ENODEV;
 389
 390 #ifndef MODULE
 391         if (fb_get_options("intelfb", &option))
 392                 return -ENODEV;
 393         intelfb_setup(option);
 394 #endif
 395
 396         return pci_register_driver(&intelfb_driver);
 397 }
 398
 399 static void __exit intelfb_exit(void)
 400 {
 401         DBG_MSG("intelfb_exit\n");
 402         pci_unregister_driver(&intelfb_driver);
 403 }
 404
 405 module_init(intelfb_init);
 406 module_exit(intelfb_exit);
 407
 408 /***************************************************************
 409  *                     mtrr support functions                  *
 410  ***************************************************************/
 411
 412 #ifdef CONFIG_MTRR
 413 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
 414 {
 415         dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
 416                                    dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
 417         if (dinfo->mtrr_reg < 0) {
 418                 ERR_MSG("unable to set MTRR\n");
 419                 return;
 420         }
 421         dinfo->has_mtrr = 1;
 422 }
 423 static inline void unset_mtrr(struct intelfb_info *dinfo)
 424 {
 425         if (dinfo->has_mtrr)
 426                 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
 427                          dinfo->aperture.size);
 428 }
 429 #else
 430 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
 431
 432 #define unset_mtrr(x) do { } while (0)
 433 #endif /* CONFIG_MTRR */
 434
 435 /***************************************************************
 436  *                        driver init / cleanup                *
 437  ***************************************************************/
 438
 439 static void cleanup(struct intelfb_info *dinfo)
 440 {
 441         DBG_MSG("cleanup\n");
 442
 443         if (!dinfo)
 444                 return;
 445
 446         intelfbhw_disable_irq(dinfo);
 447
 448         fb_dealloc_cmap(&dinfo->info->cmap);
 449         kfree(dinfo->info->pixmap.addr);
 450
 451         if (dinfo->registered)
 452                 unregister_framebuffer(dinfo->info);
 453
 454         unset_mtrr(dinfo);
 455
 456         if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
 457                 agp_unbind_memory(dinfo->gtt_fb_mem);
 458                 agp_free_memory(dinfo->gtt_fb_mem);
 459         }
 460         if (dinfo->gtt_cursor_mem) {
 461                 agp_unbind_memory(dinfo->gtt_cursor_mem);
 462                 agp_free_memory(dinfo->gtt_cursor_mem);
 463         }
 464         if (dinfo->gtt_ring_mem) {
 465                 agp_unbind_memory(dinfo->gtt_ring_mem);
 466                 agp_free_memory(dinfo->gtt_ring_mem);
 467         }
 468
 469 #ifdef CONFIG_FB_INTEL_I2C
 470         /* un-register I2C bus */
 471         intelfb_delete_i2c_busses(dinfo);
 472 #endif
 473
 474         if (dinfo->mmio_base)
 475                 iounmap((void __iomem *)dinfo->mmio_base);
 476         if (dinfo->aperture.virtual)
 477                 iounmap((void __iomem *)dinfo->aperture.virtual);
 478
 479         if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
 480                 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
 481         if (dinfo->flag & INTELFB_FB_ACQUIRED)
 482                 release_mem_region(dinfo->aperture.physical,
 483                                    dinfo->aperture.size);
 484         framebuffer_release(dinfo->info);
 485 }
 486
 487 #define bailout(dinfo) do {                                             \
 488         DBG_MSG("bailout\n");                                           \
 489         cleanup(dinfo);                                                 \
 490         INF_MSG("Not going to register framebuffer, exiting...\n");     \
 491         return -ENODEV;                                                 \
 492 } while (0)
 493
 494
 495 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
 496                                           const struct pci_device_id *ent)
 497 {
 498         struct fb_info *info;
 499         struct intelfb_info *dinfo;
 500         int i, err, dvo;
 501         int aperture_size, stolen_size;
 502         struct agp_kern_info gtt_info;
 503         int agp_memtype;
 504         const char *s;
 505         struct agp_bridge_data *bridge;
 506         int aperture_bar = 0;
 507         int mmio_bar = 1;
 508         int offset;
 509
 510         DBG_MSG("intelfb_pci_register\n");
 511
 512         num_registered++;
 513         if (num_registered != 1) {
 514                 ERR_MSG("Attempted to register %d devices "
 515                         "(should be only 1).\n", num_registered);
 516                 return -ENODEV;
 517         }
 518
 519         info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
 520         if (!info) {
 521                 ERR_MSG("Could not allocate memory for intelfb_info.\n");
 522                 return -ENODEV;
 523         }
 524         if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
 525                 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
 526                 goto err_out_cmap;
 527                 return -ENODEV;
 528         }
 529
 530         dinfo = info->par;
 531         dinfo->info  = info;
 532         dinfo->fbops = &intel_fb_ops;
 533         dinfo->pdev  = pdev;
 534
 535         /* Reserve pixmap space. */
 536         info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
 537         if (info->pixmap.addr == NULL) {
 538                 ERR_MSG("Cannot reserve pixmap memory.\n");
 539                 goto err_out_pixmap;
 540         }
 541
 542         /* set early this option because it could be changed by tv encoder
 543            driver */
 544         dinfo->fixed_mode = fixed;
 545
 546         /* Enable device. */
 547         if ((err = pci_enable_device(pdev))) {
 548                 ERR_MSG("Cannot enable device.\n");
 549                 cleanup(dinfo);
 550                 return -ENODEV;
 551         }
 552
 553         /* Set base addresses. */
 554         if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
 555             (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
 556             (ent->device == PCI_DEVICE_ID_INTEL_945G)  ||
 557             (ent->device == PCI_DEVICE_ID_INTEL_945GM) ||
 558             (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
 559             (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
 560
 561                 aperture_bar = 2;
 562                 mmio_bar = 0;
 563         }
 564         dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
 565         dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
 566         dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
 567         DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
 568                 (unsigned long long)pci_resource_start(pdev, aperture_bar),
 569                 (unsigned long long)pci_resource_len(pdev, aperture_bar),
 570                 (unsigned long long)pci_resource_start(pdev, mmio_bar),
 571                 (unsigned long long)pci_resource_len(pdev, mmio_bar));
 572
 573         /* Reserve the fb and MMIO regions */
 574         if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
 575                                 INTELFB_MODULE_NAME)) {
 576                 ERR_MSG("Cannot reserve FB region.\n");
 577                 cleanup(dinfo);
 578                 return -ENODEV;
 579         }
 580
 581         dinfo->flag |= INTELFB_FB_ACQUIRED;
 582
 583         if (!request_mem_region(dinfo->mmio_base_phys,
 584                                 INTEL_REG_SIZE,
 585                                 INTELFB_MODULE_NAME)) {
 586                 ERR_MSG("Cannot reserve MMIO region.\n");
 587                 cleanup(dinfo);
 588                 return -ENODEV;
 589         }
 590
 591         dinfo->flag |= INTELFB_MMIO_ACQUIRED;
 592
 593         /* Get the chipset info. */
 594         dinfo->pci_chipset = pdev->device;
 595
 596         if (intelfbhw_get_chipset(pdev, dinfo)) {
 597                 cleanup(dinfo);
 598                 return -ENODEV;
 599         }
 600
 601         if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
 602                 cleanup(dinfo);
 603                 return -ENODEV;
 604         }
 605
 606         INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
 607                 "stolen memory %dkB\n",
 608                 pdev->bus->number, PCI_SLOT(pdev->devfn),
 609                 PCI_FUNC(pdev->devfn), dinfo->name,
 610                 BtoMB(aperture_size), BtoKB(stolen_size));
 611
 612         /* Set these from the options. */
 613         dinfo->accel    = accel;
 614         dinfo->hwcursor = hwcursor;
 615
 616         if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
 617                 INF_MSG("Acceleration is not supported for the %s chipset.\n",
 618                         dinfo->name);
 619                 dinfo->accel = 0;
 620         }
 621
 622         /* Framebuffer parameters - Use all the stolen memory if >= vram */
 623         if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
 624                 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
 625                 dinfo->fbmem_gart = 0;
 626         } else {
 627                 dinfo->fb.size =  MB(vram);
 628                 dinfo->fbmem_gart = 1;
 629         }
 630
 631         /* Allocate space for the ring buffer and HW cursor if enabled. */
 632         if (dinfo->accel) {
 633                 dinfo->ring.size = RINGBUFFER_SIZE;
 634                 dinfo->ring_tail_mask = dinfo->ring.size - 1;
 635         }
 636         if (dinfo->hwcursor)
 637                 dinfo->cursor.size = HW_CURSOR_SIZE;
 638
 639         /* Use agpgart to manage the GATT */
 640         if (!(bridge = agp_backend_acquire(pdev))) {
 641                 ERR_MSG("cannot acquire agp\n");
 642                 cleanup(dinfo);
 643                 return -ENODEV;
 644         }
 645
 646         /* get the current gatt info */
 647         if (agp_copy_info(bridge, &gtt_info)) {
 648                 ERR_MSG("cannot get agp info\n");
 649                 agp_backend_release(bridge);
 650                 cleanup(dinfo);
 651                 return -ENODEV;
 652         }
 653
 654         if (MB(voffset) < stolen_size)
 655                 offset = (stolen_size >> 12);
 656         else
 657                 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
 658
 659         /* set the mem offsets - set them after the already used pages */
 660         if (dinfo->accel)
 661                 dinfo->ring.offset = offset + gtt_info.current_memory;
 662         if (dinfo->hwcursor)
 663                 dinfo->cursor.offset = offset +
 664                         + gtt_info.current_memory + (dinfo->ring.size >> 12);
 665         if (dinfo->fbmem_gart)
 666                 dinfo->fb.offset = offset +
 667                         + gtt_info.current_memory + (dinfo->ring.size >> 12)
 668                         + (dinfo->cursor.size >> 12);
 669
 670         /* Allocate memories (which aren't stolen) */
 671         /* Map the fb and MMIO regions */
 672         /* ioremap only up to the end of used aperture */
 673         dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
 674                 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
 675                  + dinfo->fb.size);
 676         if (!dinfo->aperture.virtual) {
 677                 ERR_MSG("Cannot remap FB region.\n");
 678                 cleanup(dinfo);
 679                 return -ENODEV;
 680         }
 681
 682         dinfo->mmio_base =
 683                 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
 684                                               INTEL_REG_SIZE);
 685         if (!dinfo->mmio_base) {
 686                 ERR_MSG("Cannot remap MMIO region.\n");
 687                 cleanup(dinfo);
 688                 return -ENODEV;
 689         }
 690
 691         if (dinfo->accel) {
 692                 if (!(dinfo->gtt_ring_mem =
 693                       agp_allocate_memory(bridge, dinfo->ring.size >> 12,
 694                                           AGP_NORMAL_MEMORY))) {
 695                         ERR_MSG("cannot allocate ring buffer memory\n");
 696                         agp_backend_release(bridge);
 697                         cleanup(dinfo);
 698                         return -ENOMEM;
 699                 }
 700                 if (agp_bind_memory(dinfo->gtt_ring_mem,
 701                                     dinfo->ring.offset)) {
 702                         ERR_MSG("cannot bind ring buffer memory\n");
 703                         agp_backend_release(bridge);
 704                         cleanup(dinfo);
 705                         return -EBUSY;
 706                 }
 707                 dinfo->ring.physical = dinfo->aperture.physical
 708                         + (dinfo->ring.offset << 12);
 709                 dinfo->ring.virtual  = dinfo->aperture.virtual
 710                         + (dinfo->ring.offset << 12);
 711                 dinfo->ring_head = 0;
 712         }
 713         if (dinfo->hwcursor) {
 714                 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
 715                         : AGP_NORMAL_MEMORY;
 716                 if (!(dinfo->gtt_cursor_mem =
 717                       agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
 718                                           agp_memtype))) {
 719                         ERR_MSG("cannot allocate cursor memory\n");
 720                         agp_backend_release(bridge);
 721                         cleanup(dinfo);
 722                         return -ENOMEM;
 723                 }
 724                 if (agp_bind_memory(dinfo->gtt_cursor_mem,
 725                                     dinfo->cursor.offset)) {
 726                         ERR_MSG("cannot bind cursor memory\n");
 727                         agp_backend_release(bridge);
 728                         cleanup(dinfo);
 729                         return -EBUSY;
 730                 }
 731                 if (dinfo->mobile)
 732                         dinfo->cursor.physical
 733                                 = dinfo->gtt_cursor_mem->physical;
 734                 else
 735                         dinfo->cursor.physical = dinfo->aperture.physical
 736                                 + (dinfo->cursor.offset << 12);
 737                 dinfo->cursor.virtual = dinfo->aperture.virtual
 738                         + (dinfo->cursor.offset << 12);
 739         }
 740         if (dinfo->fbmem_gart) {
 741                 if (!(dinfo->gtt_fb_mem =
 742                       agp_allocate_memory(bridge, dinfo->fb.size >> 12,
 743                                           AGP_NORMAL_MEMORY))) {
 744                         WRN_MSG("cannot allocate framebuffer memory - use "
 745                                 "the stolen one\n");
 746                         dinfo->fbmem_gart = 0;
 747                 }
 748                 if (agp_bind_memory(dinfo->gtt_fb_mem,
 749                                     dinfo->fb.offset)) {
 750                         WRN_MSG("cannot bind framebuffer memory - use "
 751                                 "the stolen one\n");
 752                         dinfo->fbmem_gart = 0;
 753                 }
 754         }
 755
 756         /* update framebuffer memory parameters */
 757         if (!dinfo->fbmem_gart)
 758                 dinfo->fb.offset = 0;   /* starts at offset 0 */
 759         dinfo->fb.physical = dinfo->aperture.physical
 760                 + (dinfo->fb.offset << 12);
 761         dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
 762         dinfo->fb_start = dinfo->fb.offset << 12;
 763
 764         /* release agpgart */
 765         agp_backend_release(bridge);
 766
 767         if (mtrr)
 768                 set_mtrr(dinfo);
 769
 770         DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
 771                 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
 772                 dinfo->fb.virtual);
 773         DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
 774                 dinfo->mmio_base_phys, INTEL_REG_SIZE,
 775                 dinfo->mmio_base);
 776         DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
 777                 dinfo->ring.physical, dinfo->ring.size,
 778                 dinfo->ring.virtual);
 779         DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
 780                 dinfo->cursor.physical, dinfo->cursor.size,
 781                 dinfo->cursor.virtual, dinfo->cursor.offset,
 782                 dinfo->cursor.physical);
 783
 784         DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
 785                 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
 786         DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
 787
 788         if (probeonly)
 789                 bailout(dinfo);
 790
 791         /*
 792          * Check if the LVDS port or any DVO ports are enabled.  If so,
 793          * don't allow mode switching
 794          */
 795         dvo = intelfbhw_check_non_crt(dinfo);
 796         if (dvo) {
 797                 dinfo->fixed_mode = 1;
 798                 WRN_MSG("Non-CRT device is enabled ( ");
 799                 i = 0;
 800                 while (dvo) {
 801                         if (dvo & 1) {
 802                                 s = intelfbhw_dvo_to_string(1 << i);
 803                                 if (s)
 804                                         printk("%s ", s);
 805                         }
 806                         dvo >>= 1;
 807                         ++i;
 808                 }
 809                 printk(").  Disabling mode switching.\n");
 810         }
 811
 812         if (bailearly == 1)
 813                 bailout(dinfo);
 814
 815         if (FIXED_MODE(dinfo) &&
 816             screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
 817                 ERR_MSG("Video mode must be programmed at boot time.\n");
 818                 cleanup(dinfo);
 819                 return -ENODEV;
 820         }
 821
 822         if (bailearly == 2)
 823                 bailout(dinfo);
 824
 825         /* Initialise dinfo and related data. */
 826         /* If an initial mode was programmed at boot time, get its details. */
 827         if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
 828                 get_initial_mode(dinfo);
 829
 830         if (bailearly == 3)
 831                 bailout(dinfo);
 832
 833         if (FIXED_MODE(dinfo))  /* remap fb address */
 834                 update_dinfo(dinfo, &dinfo->initial_var);
 835
 836         if (bailearly == 4)
 837                 bailout(dinfo);
 838
 839
 840         if (intelfb_set_fbinfo(dinfo)) {
 841                 cleanup(dinfo);
 842                 return -ENODEV;
 843         }
 844
 845         if (bailearly == 5)
 846                 bailout(dinfo);
 847
 848 #ifdef CONFIG_FB_INTEL_I2C
 849         /* register I2C bus */
 850         intelfb_create_i2c_busses(dinfo);
 851 #endif
 852
 853         if (bailearly == 6)
 854                 bailout(dinfo);
 855
 856         pci_set_drvdata(pdev, dinfo);
 857
 858         /* Save the initial register state. */
 859         i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
 860                                     bailearly > 6 ? bailearly - 6 : 0);
 861         if (i != 0) {
 862                 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
 863                 bailout(dinfo);
 864         }
 865
 866         intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
 867
 868         if (bailearly == 18)
 869                 bailout(dinfo);
 870
 871         /* Cursor initialisation */
 872         if (dinfo->hwcursor) {
 873                 intelfbhw_cursor_init(dinfo);
 874                 intelfbhw_cursor_reset(dinfo);
 875         }
 876
 877         if (bailearly == 19)
 878                 bailout(dinfo);
 879
 880         /* 2d acceleration init */
 881         if (dinfo->accel)
 882                 intelfbhw_2d_start(dinfo);
 883
 884         if (bailearly == 20)
 885                 bailout(dinfo);
 886
 887         if (noregister)
 888                 bailout(dinfo);
 889
 890         if (register_framebuffer(dinfo->info) < 0) {
 891                 ERR_MSG("Cannot register framebuffer.\n");
 892                 cleanup(dinfo);
 893                 return -ENODEV;
 894         }
 895
 896         dinfo->registered = 1;
 897         dinfo->open = 0;
 898
 899         init_waitqueue_head(&dinfo->vsync.wait);
 900         spin_lock_init(&dinfo->int_lock);
 901         dinfo->irq_flags = 0;
 902         dinfo->vsync.pan_display = 0;
 903         dinfo->vsync.pan_offset = 0;
 904
 905         return 0;
 906
 907 err_out_pixmap:
 908         fb_dealloc_cmap(&info->cmap);
 909 err_out_cmap:
 910         framebuffer_release(info);
 911         return -ENODEV;
 912 }
 913
 914 static void __devexit
 915 intelfb_pci_unregister(struct pci_dev *pdev)
 916 {
 917         struct intelfb_info *dinfo = pci_get_drvdata(pdev);
 918
 919         DBG_MSG("intelfb_pci_unregister\n");
 920
 921         if (!dinfo)
 922                 return;
 923
 924         cleanup(dinfo);
 925
 926         pci_set_drvdata(pdev, NULL);
 927 }
 928
 929 /***************************************************************
 930  *                       helper functions                      *
 931  ***************************************************************/
 932
 933 int __inline__ intelfb_var_to_depth(const struct fb_var_screeninfo *var)
 934 {
 935         DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
 936                 var->bits_per_pixel, var->green.length);
 937
 938         switch (var->bits_per_pixel) {
 939         case 16:
 940                 return (var->green.length == 6) ? 16 : 15;
 941         case 32:
 942                 return 24;
 943         default:
 944                 return var->bits_per_pixel;
 945         }
 946 }
 947
 948
 949 static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
 950 {
 951         int xtot = var->xres + var->left_margin + var->right_margin +
 952                    var->hsync_len;
 953         int ytot = var->yres + var->upper_margin + var->lower_margin +
 954                    var->vsync_len;
 955
 956         return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
 957 }
 958
 959 /***************************************************************
 960  *                Various intialisation functions              *
 961  ***************************************************************/
 962
 963 static void __devinit get_initial_mode(struct intelfb_info *dinfo)
 964 {
 965         struct fb_var_screeninfo *var;
 966         int xtot, ytot;
 967
 968         DBG_MSG("get_initial_mode\n");
 969
 970         dinfo->initial_vga = 1;
 971         dinfo->initial_fb_base = screen_info.lfb_base;
 972         dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
 973         dinfo->initial_pitch = screen_info.lfb_linelength;
 974
 975         var = &dinfo->initial_var;
 976         memset(var, 0, sizeof(*var));
 977         var->xres = screen_info.lfb_width;
 978         var->yres = screen_info.lfb_height;
 979         var->bits_per_pixel = screen_info.lfb_depth;
 980         switch (screen_info.lfb_depth) {
 981         case 15:
 982                 var->bits_per_pixel = 16;
 983                 break;
 984         case 24:
 985                 var->bits_per_pixel = 32;
 986                 break;
 987         }
 988
 989         DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
 990                 dinfo->initial_fb_base, dinfo->initial_video_ram,
 991                 BtoKB(dinfo->initial_video_ram));
 992
 993         DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
 994                 var->xres, var->yres, var->bits_per_pixel,
 995                 dinfo->initial_pitch);
 996
 997         /* Dummy timing values (assume 60Hz) */
 998         var->left_margin = (var->xres / 8) & 0xf8;
 999         var->right_margin = 32;
1000         var->upper_margin = 16;
1001         var->lower_margin = 4;
1002         var->hsync_len = (var->xres / 8) & 0xf8;
1003         var->vsync_len = 4;
1004
1005         xtot = var->xres + var->left_margin +
1006                 var->right_margin + var->hsync_len;
1007         ytot = var->yres + var->upper_margin +
1008                 var->lower_margin + var->vsync_len;
1009         var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1010
1011         var->height = -1;
1012         var->width = -1;
1013
1014         if (var->bits_per_pixel > 8) {
1015                 var->red.offset = screen_info.red_pos;
1016                 var->red.length = screen_info.red_size;
1017                 var->green.offset = screen_info.green_pos;
1018                 var->green.length = screen_info.green_size;
1019                 var->blue.offset = screen_info.blue_pos;
1020                 var->blue.length = screen_info.blue_size;
1021                 var->transp.offset = screen_info.rsvd_pos;
1022                 var->transp.length = screen_info.rsvd_size;
1023         } else {
1024                 var->red.length = 8;
1025                 var->green.length = 8;
1026                 var->blue.length = 8;
1027         }
1028 }
1029
1030 static int __devinit intelfb_init_var(struct intelfb_info *dinfo)
1031 {
1032         struct fb_var_screeninfo *var;
1033         int msrc = 0;
1034
1035         DBG_MSG("intelfb_init_var\n");
1036
1037         var = &dinfo->info->var;
1038         if (FIXED_MODE(dinfo)) {
1039                 memcpy(var, &dinfo->initial_var,
1040                        sizeof(struct fb_var_screeninfo));
1041                 msrc = 5;
1042         } else {
1043                 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1044                 u8 *edid_d = NULL;
1045
1046                 if (edid_s) {
1047                         edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1048
1049                         if (edid_d) {
1050                                 fb_edid_to_monspecs(edid_d,
1051                                                     &dinfo->info->monspecs);
1052                                 kfree(edid_d);
1053                         }
1054                 }
1055
1056                 if (mode) {
1057                         printk("intelfb: Looking for mode in private "
1058                                "database\n");
1059                         msrc = fb_find_mode(var, dinfo->info, mode,
1060                                             dinfo->info->monspecs.modedb,
1061                                             dinfo->info->monspecs.modedb_len,
1062                                             NULL, 0);
1063
1064                         if (msrc && msrc > 1) {
1065                                 printk("intelfb: No mode in private database, "
1066                                        "intelfb: looking for mode in global "
1067                                        "database ");
1068                                 msrc = fb_find_mode(var, dinfo->info, mode,
1069                                                     NULL, 0, NULL, 0);
1070
1071                                 if (msrc)
1072                                         msrc |= 8;
1073                         }
1074
1075                 }
1076
1077                 if (!msrc)
1078                         msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1079                                             NULL, 0, NULL, 0);
1080         }
1081
1082         if (!msrc) {
1083                 ERR_MSG("Cannot find a suitable video mode.\n");
1084                 return 1;
1085         }
1086
1087         INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1088                 var->bits_per_pixel, var_to_refresh(var));
1089
1090         DBG_MSG("Initial video mode is from %d.\n", msrc);
1091
1092 #if ALLOCATE_FOR_PANNING
1093         /* Allow use of half of the video ram for panning */
1094         var->xres_virtual = var->xres;
1095         var->yres_virtual =
1096                 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1097         if (var->yres_virtual < var->yres)
1098                 var->yres_virtual = var->yres;
1099 #else
1100         var->yres_virtual = var->yres;
1101 #endif
1102
1103         if (dinfo->accel)
1104                 var->accel_flags |= FB_ACCELF_TEXT;
1105         else
1106                 var->accel_flags &= ~FB_ACCELF_TEXT;
1107
1108         return 0;
1109 }
1110
1111 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo)
1112 {
1113         struct fb_info *info = dinfo->info;
1114
1115         DBG_MSG("intelfb_set_fbinfo\n");
1116
1117         info->flags = FBINFO_FLAG_DEFAULT;
1118         info->fbops = &intel_fb_ops;
1119         info->pseudo_palette = dinfo->pseudo_palette;
1120
1121         info->pixmap.size = 64*1024;
1122         info->pixmap.buf_align = 8;
1123         info->pixmap.access_align = 32;
1124         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1125
1126         if (intelfb_init_var(dinfo))
1127                 return 1;
1128
1129         info->pixmap.scan_align = 1;
1130         strcpy(info->fix.id, dinfo->name);
1131         info->fix.smem_start = dinfo->fb.physical;
1132         info->fix.smem_len = dinfo->fb.size;
1133         info->fix.type = FB_TYPE_PACKED_PIXELS;
1134         info->fix.type_aux = 0;
1135         info->fix.xpanstep = 8;
1136         info->fix.ypanstep = 1;
1137         info->fix.ywrapstep = 0;
1138         info->fix.mmio_start = dinfo->mmio_base_phys;
1139         info->fix.mmio_len = INTEL_REG_SIZE;
1140         info->fix.accel = FB_ACCEL_I830;
1141         update_dinfo(dinfo, &info->var);
1142
1143         return 0;
1144 }
1145
1146 /* Update dinfo to match the active video mode. */
1147 static void update_dinfo(struct intelfb_info *dinfo,
1148                          struct fb_var_screeninfo *var)
1149 {
1150         DBG_MSG("update_dinfo\n");
1151
1152         dinfo->bpp = var->bits_per_pixel;
1153         dinfo->depth = intelfb_var_to_depth(var);
1154         dinfo->xres = var->xres;
1155         dinfo->yres = var->xres;
1156         dinfo->pixclock = var->pixclock;
1157
1158         dinfo->info->fix.visual = dinfo->visual;
1159         dinfo->info->fix.line_length = dinfo->pitch;
1160
1161         switch (dinfo->bpp) {
1162         case 8:
1163                 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1164                 dinfo->pitch = var->xres_virtual;
1165                 break;
1166         case 16:
1167                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1168                 dinfo->pitch = var->xres_virtual * 2;
1169                 break;
1170         case 32:
1171                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1172                 dinfo->pitch = var->xres_virtual * 4;
1173                 break;
1174         }
1175
1176         /* Make sure the line length is a aligned correctly. */
1177         if (IS_I9XX(dinfo))
1178                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1179         else
1180                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1181
1182         if (FIXED_MODE(dinfo))
1183                 dinfo->pitch = dinfo->initial_pitch;
1184
1185         dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1186         dinfo->info->fix.line_length = dinfo->pitch;
1187         dinfo->info->fix.visual = dinfo->visual;
1188 }
1189
1190 /* fbops functions */
1191
1192 /***************************************************************
1193  *                       fbdev interface                       *
1194  ***************************************************************/
1195
1196 static int intelfb_open(struct fb_info *info, int user)
1197 {
1198         struct intelfb_info *dinfo = GET_DINFO(info);
1199
1200         if (user)
1201                 dinfo->open++;
1202
1203         return 0;
1204 }
1205
1206 static int intelfb_release(struct fb_info *info, int user)
1207 {
1208         struct intelfb_info *dinfo = GET_DINFO(info);
1209
1210         if (user) {
1211                 dinfo->open--;
1212                 msleep(1);
1213                 if (!dinfo->open)
1214                         intelfbhw_disable_irq(dinfo);
1215         }
1216
1217         return 0;
1218 }
1219
1220 static int intelfb_check_var(struct fb_var_screeninfo *var,
1221                              struct fb_info *info)
1222 {
1223         int change_var = 0;
1224         struct fb_var_screeninfo v;
1225         struct intelfb_info *dinfo;
1226         static int first = 1;
1227         int i;
1228         /* Good pitches to allow tiling.  Don't care about pitches < 1024. */
1229         static const int pitches[] = {
1230                 128 * 8,
1231                 128 * 16,
1232                 128 * 32,
1233                 128 * 64,
1234                 0
1235         };
1236
1237         DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1238
1239         dinfo = GET_DINFO(info);
1240
1241         /* update the pitch */
1242         if (intelfbhw_validate_mode(dinfo, var) != 0)
1243                 return -EINVAL;
1244
1245         v = *var;
1246
1247         for (i = 0; pitches[i] != 0; i++) {
1248                 if (pitches[i] >= v.xres_virtual) {
1249                         v.xres_virtual = pitches[i];
1250                         break;
1251                 }
1252         }
1253
1254         /* Check for a supported bpp. */
1255         if (v.bits_per_pixel <= 8)
1256                 v.bits_per_pixel = 8;
1257         else if (v.bits_per_pixel <= 16) {
1258                 if (v.bits_per_pixel == 16)
1259                         v.green.length = 6;
1260                 v.bits_per_pixel = 16;
1261         } else if (v.bits_per_pixel <= 32)
1262                 v.bits_per_pixel = 32;
1263         else
1264                 return -EINVAL;
1265
1266         change_var = ((info->var.xres != var->xres) ||
1267                       (info->var.yres != var->yres) ||
1268                       (info->var.xres_virtual != var->xres_virtual) ||
1269                       (info->var.yres_virtual != var->yres_virtual) ||
1270                       (info->var.bits_per_pixel != var->bits_per_pixel) ||
1271                       memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1272                       memcmp(&info->var.green, &var->green,
1273                              sizeof(var->green)) ||
1274                       memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1275
1276         if (FIXED_MODE(dinfo) &&
1277             (change_var ||
1278              var->yres_virtual > dinfo->initial_var.yres_virtual ||
1279              var->yres_virtual < dinfo->initial_var.yres ||
1280              var->xoffset || var->nonstd)) {
1281                 if (first) {
1282                         ERR_MSG("Changing the video mode is not supported.\n");
1283                         first = 0;
1284                 }
1285                 return -EINVAL;
1286         }
1287
1288         switch (intelfb_var_to_depth(&v)) {
1289         case 8:
1290                 v.red.offset = v.green.offset = v.blue.offset = 0;
1291                 v.red.length = v.green.length = v.blue.length = 8;
1292                 v.transp.offset = v.transp.length = 0;
1293                 break;
1294         case 15:
1295                 v.red.offset = 10;
1296                 v.green.offset = 5;
1297                 v.blue.offset = 0;
1298                 v.red.length = v.green.length = v.blue.length = 5;
1299                 v.transp.offset = v.transp.length = 0;
1300                 break;
1301         case 16:
1302                 v.red.offset = 11;
1303                 v.green.offset = 5;
1304                 v.blue.offset = 0;
1305                 v.red.length = 5;
1306                 v.green.length = 6;
1307                 v.blue.length = 5;
1308                 v.transp.offset = v.transp.length = 0;
1309                 break;
1310         case 24:
1311                 v.red.offset = 16;
1312                 v.green.offset = 8;
1313                 v.blue.offset = 0;
1314                 v.red.length = v.green.length = v.blue.length = 8;
1315                 v.transp.offset = v.transp.length = 0;
1316                 break;
1317         case 32:
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 = 24;
1323                 v.transp.length = 8;
1324                 break;
1325         }
1326
1327         if (v.xoffset < 0)
1328                 v.xoffset = 0;
1329         if (v.yoffset < 0)
1330                 v.yoffset = 0;
1331
1332         if (v.xoffset > v.xres_virtual - v.xres)
1333                 v.xoffset = v.xres_virtual - v.xres;
1334         if (v.yoffset > v.yres_virtual - v.yres)
1335                 v.yoffset = v.yres_virtual - v.yres;
1336
1337         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1338                           v.transp.msb_right = 0;
1339
1340         *var = v;
1341
1342         return 0;
1343 }
1344
1345 static int intelfb_set_par(struct fb_info *info)
1346 {
1347         struct intelfb_hwstate *hw;
1348         struct intelfb_info *dinfo = GET_DINFO(info);
1349
1350         if (FIXED_MODE(dinfo)) {
1351                 ERR_MSG("Changing the video mode is not supported.\n");
1352                 return -EINVAL;
1353         }
1354
1355         hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1356         if (!hw)
1357                 return -ENOMEM;
1358
1359         DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1360                 info->var.yres, info->var.bits_per_pixel);
1361
1362         intelfb_blank(FB_BLANK_POWERDOWN, info);
1363
1364         if (ACCEL(dinfo, info))
1365                 intelfbhw_2d_stop(dinfo);
1366
1367         memcpy(hw, &dinfo->save_state, sizeof(*hw));
1368         if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1369                 goto invalid_mode;
1370         if (intelfbhw_program_mode(dinfo, hw, 0))
1371                 goto invalid_mode;
1372
1373 #if REGDUMP > 0
1374         intelfbhw_read_hw_state(dinfo, hw, 0);
1375         intelfbhw_print_hw_state(dinfo, hw);
1376 #endif
1377
1378         update_dinfo(dinfo, &info->var);
1379
1380         if (ACCEL(dinfo, info))
1381                 intelfbhw_2d_start(dinfo);
1382
1383         intelfb_pan_display(&info->var, info);
1384
1385         intelfb_blank(FB_BLANK_UNBLANK, info);
1386
1387         if (ACCEL(dinfo, info)) {
1388                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1389                 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1390                 FBINFO_HWACCEL_IMAGEBLIT;
1391         } else
1392                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1393
1394         kfree(hw);
1395         return 0;
1396 invalid_mode:
1397         kfree(hw);
1398         return -EINVAL;
1399 }
1400
1401 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1402                              unsigned blue, unsigned transp,
1403                              struct fb_info *info)
1404 {
1405         struct intelfb_info *dinfo = GET_DINFO(info);
1406
1407 #if VERBOSE > 0
1408         DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1409 #endif
1410
1411         if (regno > 255)
1412                 return 1;
1413
1414         if (dinfo->depth == 8) {
1415                 red >>= 8;
1416                 green >>= 8;
1417                 blue >>= 8;
1418
1419                 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1420                                     transp);
1421         }
1422
1423         if (regno < 16) {
1424                 switch (dinfo->depth) {
1425                 case 15:
1426                         dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1427                                 ((green & 0xf800) >>  6) |
1428                                 ((blue & 0xf800) >> 11);
1429                         break;
1430                 case 16:
1431                         dinfo->pseudo_palette[regno] = (red & 0xf800) |
1432                                 ((green & 0xfc00) >>  5) |
1433                                 ((blue  & 0xf800) >> 11);
1434                         break;
1435                 case 24:
1436                         dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1437                                 (green & 0xff00) |
1438                                 ((blue  & 0xff00) >> 8);
1439                         break;
1440                 }
1441         }
1442
1443         return 0;
1444 }
1445
1446 static int intelfb_blank(int blank, struct fb_info *info)
1447 {
1448         intelfbhw_do_blank(blank, info);
1449         return 0;
1450 }
1451
1452 static int intelfb_pan_display(struct fb_var_screeninfo *var,
1453                                struct fb_info *info)
1454 {
1455         intelfbhw_pan_display(var, info);
1456         return 0;
1457 }
1458
1459 /* When/if we have our own ioctls. */
1460 static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1461                          unsigned long arg)
1462 {
1463         int retval = 0;
1464         struct intelfb_info *dinfo = GET_DINFO(info);
1465         u32 pipe = 0;
1466
1467         switch (cmd) {
1468                 case FBIO_WAITFORVSYNC:
1469                         if (get_user(pipe, (__u32 __user *)arg))
1470                                 return -EFAULT;
1471
1472                         retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1473                         break;
1474                 default:
1475                         break;
1476         }
1477
1478         return retval;
1479 }
1480
1481 static void intelfb_fillrect (struct fb_info *info,
1482                               const struct fb_fillrect *rect)
1483 {
1484         struct intelfb_info *dinfo = GET_DINFO(info);
1485         u32 rop, color;
1486
1487 #if VERBOSE > 0
1488         DBG_MSG("intelfb_fillrect\n");
1489 #endif
1490
1491         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1492                 return cfb_fillrect(info, rect);
1493
1494         if (rect->rop == ROP_COPY)
1495                 rop = PAT_ROP_GXCOPY;
1496         else /* ROP_XOR */
1497                 rop = PAT_ROP_GXXOR;
1498
1499         if (dinfo->depth != 8)
1500                 color = dinfo->pseudo_palette[rect->color];
1501         else
1502                 color = rect->color;
1503
1504         intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1505                               rect->width, rect->height, color,
1506                               dinfo->pitch, info->var.bits_per_pixel,
1507                               rop);
1508 }
1509
1510 static void intelfb_copyarea(struct fb_info *info,
1511                              const struct fb_copyarea *region)
1512 {
1513         struct intelfb_info *dinfo = GET_DINFO(info);
1514
1515 #if VERBOSE > 0
1516         DBG_MSG("intelfb_copyarea\n");
1517 #endif
1518
1519         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1520                 return cfb_copyarea(info, region);
1521
1522         intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1523                             region->dy, region->width, region->height,
1524                             dinfo->pitch, info->var.bits_per_pixel);
1525 }
1526
1527 static void intelfb_imageblit(struct fb_info *info,
1528                               const struct fb_image *image)
1529 {
1530         struct intelfb_info *dinfo = GET_DINFO(info);
1531         u32 fgcolor, bgcolor;
1532
1533 #if VERBOSE > 0
1534         DBG_MSG("intelfb_imageblit\n");
1535 #endif
1536
1537         if (!ACCEL(dinfo, info) || dinfo->depth == 4
1538             || image->depth != 1)
1539                 return cfb_imageblit(info, image);
1540
1541         if (dinfo->depth != 8) {
1542                 fgcolor = dinfo->pseudo_palette[image->fg_color];
1543                 bgcolor = dinfo->pseudo_palette[image->bg_color];
1544         } else {
1545                 fgcolor = image->fg_color;
1546                 bgcolor = image->bg_color;
1547         }
1548
1549         if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1550                                     image->height, image->data,
1551                                     image->dx, image->dy,
1552                                     dinfo->pitch, info->var.bits_per_pixel))
1553                 return cfb_imageblit(info, image);
1554 }
1555
1556 static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1557 {
1558         struct intelfb_info *dinfo = GET_DINFO(info);
1559         u32 physical;
1560 #if VERBOSE > 0
1561         DBG_MSG("intelfb_cursor\n");
1562 #endif
1563
1564         if (!dinfo->hwcursor)
1565                 return -ENODEV;
1566
1567         intelfbhw_cursor_hide(dinfo);
1568
1569         /* If XFree killed the cursor - restore it */
1570         physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1571                    (dinfo->cursor.offset << 12);
1572
1573         if (INREG(CURSOR_A_BASEADDR) != physical) {
1574                 u32 fg, bg;
1575
1576                 DBG_MSG("the cursor was killed - restore it !!\n");
1577                 DBG_MSG("size %d, %d   pos %d, %d\n",
1578                         cursor->image.width, cursor->image.height,
1579                         cursor->image.dx, cursor->image.dy);
1580
1581                 intelfbhw_cursor_init(dinfo);
1582                 intelfbhw_cursor_reset(dinfo);
1583                 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1584                                         cursor->image.dy);
1585
1586                 if (dinfo->depth != 8) {
1587                         fg =dinfo->pseudo_palette[cursor->image.fg_color];
1588                         bg =dinfo->pseudo_palette[cursor->image.bg_color];
1589                 } else {
1590                         fg = cursor->image.fg_color;
1591                         bg = cursor->image.bg_color;
1592                 }
1593                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1594                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1595                                       cursor->image.height,
1596                                       dinfo->cursor_src);
1597
1598                 if (cursor->enable)
1599                         intelfbhw_cursor_show(dinfo);
1600                 return 0;
1601         }
1602
1603         if (cursor->set & FB_CUR_SETPOS) {
1604                 u32 dx, dy;
1605
1606                 dx = cursor->image.dx - info->var.xoffset;
1607                 dy = cursor->image.dy - info->var.yoffset;
1608
1609                 intelfbhw_cursor_setpos(dinfo, dx, dy);
1610         }
1611
1612         if (cursor->set & FB_CUR_SETSIZE) {
1613                 if (cursor->image.width > 64 || cursor->image.height > 64)
1614                         return -ENXIO;
1615
1616                 intelfbhw_cursor_reset(dinfo);
1617         }
1618
1619         if (cursor->set & FB_CUR_SETCMAP) {
1620                 u32 fg, bg;
1621
1622                 if (dinfo->depth != 8) {
1623                         fg = dinfo->pseudo_palette[cursor->image.fg_color];
1624                         bg = dinfo->pseudo_palette[cursor->image.bg_color];
1625                 } else {
1626                         fg = cursor->image.fg_color;
1627                         bg = cursor->image.bg_color;
1628                 }
1629
1630                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1631         }
1632
1633         if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1634                 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1635                 u32 size = s_pitch * cursor->image.height;
1636                 u8 *dat = (u8 *) cursor->image.data;
1637                 u8 *msk = (u8 *) cursor->mask;
1638                 u8 src[64];
1639                 u32 i;
1640
1641                 if (cursor->image.depth != 1)
1642                         return -ENXIO;
1643
1644                 switch (cursor->rop) {
1645                 case ROP_XOR:
1646                         for (i = 0; i < size; i++)
1647                                 src[i] = dat[i] ^ msk[i];
1648                         break;
1649                 case ROP_COPY:
1650                 default:
1651                         for (i = 0; i < size; i++)
1652                                 src[i] = dat[i] & msk[i];
1653                         break;
1654                 }
1655
1656                 /* save the bitmap to restore it when XFree will
1657                    make the cursor dirty */
1658                 memcpy(dinfo->cursor_src, src, size);
1659
1660                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1661                                       cursor->image.height, src);
1662         }
1663
1664         if (cursor->enable)
1665                 intelfbhw_cursor_show(dinfo);
1666
1667         return 0;
1668 }
1669
1670 static int intelfb_sync(struct fb_info *info)
1671 {
1672         struct intelfb_info *dinfo = GET_DINFO(info);
1673
1674 #if VERBOSE > 0
1675         DBG_MSG("intelfb_sync\n");
1676 #endif
1677
1678         if (dinfo->ring_lockup)
1679                 return 0;
1680
1681         intelfbhw_do_sync(dinfo);
1682         return 0;
1683 }
1684