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