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

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