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 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/ioport.h>
 121 #include <linux/init.h>
 122 #include <linux/pci.h>
 123 #include <linux/vmalloc.h>
 124 #include <linux/pagemap.h>
 125
 126 #include <asm/io.h>
 127
 128 #ifdef CONFIG_MTRR
 129 #include <asm/mtrr.h>
 130 #endif
 131
 132 #include "intelfb.h"
 133 #include "intelfbhw.h"
 134
 135 static void __devinit get_initial_mode(struct intelfb_info *dinfo);
 136 static void update_dinfo(struct intelfb_info *dinfo,
 137                          struct fb_var_screeninfo *var);
 138 static int intelfb_check_var(struct fb_var_screeninfo *var,
 139                              struct fb_info *info);
 140 static int intelfb_set_par(struct fb_info *info);
 141 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 142                              unsigned blue, unsigned transp,
 143                              struct fb_info *info);
 144
 145 static int intelfb_blank(int blank, struct fb_info *info);
 146 static int intelfb_pan_display(struct fb_var_screeninfo *var,
 147                                struct fb_info *info);
 148
 149 static void intelfb_fillrect(struct fb_info *info,
 150                              const struct fb_fillrect *rect);
 151 static void intelfb_copyarea(struct fb_info *info,
 152                              const struct fb_copyarea *region);
 153 static void intelfb_imageblit(struct fb_info *info,
 154                               const struct fb_image *image);
 155 static int intelfb_cursor(struct fb_info *info,
 156                            struct fb_cursor *cursor);
 157
 158 static int intelfb_sync(struct fb_info *info);
 159
 160 static int intelfb_ioctl(struct fb_info *info,
 161                          unsigned int cmd, unsigned long arg);
 162
 163 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
 164                                           const struct pci_device_id *ent);
 165 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
 166 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
 167
 168 /*
 169  * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
 170  * mobile chipsets from being registered.
 171  */
 172 #if DETECT_VGA_CLASS_ONLY
 173 #define INTELFB_CLASS_MASK ~0 << 8
 174 #else
 175 #define INTELFB_CLASS_MASK 0
 176 #endif
 177
 178 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
 179         { 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 },
 180         { 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 },
 181         { 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 },
 182         { 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 },
 183         { 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 },
 184         { 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 },
 185         { 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 },
 186         { 0, }
 187 };
 188
 189 /* Global data */
 190 static int num_registered = 0;
 191
 192 /* fb ops */
 193 static struct fb_ops intel_fb_ops = {
 194         .owner =                THIS_MODULE,
 195         .fb_check_var =         intelfb_check_var,
 196         .fb_set_par =           intelfb_set_par,
 197         .fb_setcolreg =         intelfb_setcolreg,
 198         .fb_blank =             intelfb_blank,
 199         .fb_pan_display =       intelfb_pan_display,
 200         .fb_fillrect  =         intelfb_fillrect,
 201         .fb_copyarea  =         intelfb_copyarea,
 202         .fb_imageblit =         intelfb_imageblit,
 203         .fb_cursor =            intelfb_cursor,
 204         .fb_sync =              intelfb_sync,
 205         .fb_ioctl =             intelfb_ioctl
 206 };
 207
 208 /* PCI driver module table */
 209 static struct pci_driver intelfb_driver = {
 210         .name =         "intelfb",
 211         .id_table =     intelfb_pci_table,
 212         .probe =        intelfb_pci_register,
 213         .remove =       __devexit_p(intelfb_pci_unregister)
 214 };
 215
 216 /* Module description/parameters */
 217 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
 218               "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
 219 MODULE_DESCRIPTION(
 220         "Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS " chipsets");
 221 MODULE_LICENSE("Dual BSD/GPL");
 222 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
 223
 224 static int accel        = 1;
 225 static int vram         = 4;
 226 static int hwcursor     = 0;
 227 static int mtrr         = 1;
 228 static int fixed        = 0;
 229 static int noinit       = 0;
 230 static int noregister   = 0;
 231 static int probeonly    = 0;
 232 static int idonly       = 0;
 233 static int bailearly    = 0;
 234 static int voffset      = 48;
 235 static char *mode       = NULL;
 236
 237 module_param(accel, bool, S_IRUGO);
 238 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
 239 module_param(vram, int, S_IRUGO);
 240 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
 241 module_param(voffset, int, S_IRUGO);
 242 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
 243 module_param(hwcursor, bool, S_IRUGO);
 244 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
 245 module_param(mtrr, bool, S_IRUGO);
 246 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
 247 module_param(fixed, bool, S_IRUGO);
 248 MODULE_PARM_DESC(fixed, "Disable mode switching");
 249 module_param(noinit, bool, 0);
 250 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
 251 module_param(noregister, bool, 0);
 252 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
 253 module_param(probeonly, bool, 0);
 254 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
 255 module_param(idonly, bool, 0);
 256 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
 257 module_param(bailearly, bool, 0);
 258 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
 259 module_param(mode, charp, S_IRUGO);
 260 MODULE_PARM_DESC(mode,
 261                  "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
 262
 263 #ifndef MODULE
 264 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
 265 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name), NULL, 0)
 266 #define OPT_STRVAL(opt, name) (opt + strlen(name))
 267
 268 static __inline__ char *
 269 get_opt_string(const char *this_opt, const char *name)
 270 {
 271         const char *p;
 272         int i;
 273         char *ret;
 274
 275         p = OPT_STRVAL(this_opt, name);
 276         i = 0;
 277         while (p[i] && p[i] != ' ' && p[i] != ',')
 278                 i++;
 279         ret = kmalloc(i + 1, GFP_KERNEL);
 280         if (ret) {
 281                 strncpy(ret, p, i);
 282                 ret[i] = '\0';
 283         }
 284         return ret;
 285 }
 286
 287 static __inline__ int
 288 get_opt_int(const char *this_opt, const char *name, int *ret)
 289 {
 290         if (!ret)
 291                 return 0;
 292
 293         if (!OPT_EQUAL(this_opt, name))
 294                 return 0;
 295
 296         *ret = OPT_INTVAL(this_opt, name);
 297         return 1;
 298 }
 299
 300 static __inline__ int
 301 get_opt_bool(const char *this_opt, const char *name, int *ret)
 302 {
 303         if (!ret)
 304                 return 0;
 305
 306         if (OPT_EQUAL(this_opt, name)) {
 307                 if (this_opt[strlen(name)] == '=')
 308                         *ret = simple_strtoul(this_opt + strlen(name) + 1,
 309                                               NULL, 0);
 310                 else
 311                         *ret = 1;
 312         } else {
 313                 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
 314                         *ret = 0;
 315                 else
 316                         return 0;
 317         }
 318         return 1;
 319 }
 320
 321 static int __init
 322 intelfb_setup(char *options)
 323 {
 324         char *this_opt;
 325
 326         DBG_MSG("intelfb_setup\n");
 327
 328         if (!options || !*options) {
 329                 DBG_MSG("no options\n");
 330                 return 0;
 331         } else
 332                 DBG_MSG("options: %s\n", options);
 333
 334         /*
 335          * These are the built-in options analogous to the module parameters
 336          * defined above.
 337          *
 338          * The syntax is:
 339          *
 340          *    video=intelfb:[mode][,<param>=<val>] ...
 341          *
 342          * e.g.,
 343          *
 344          *    video=intelfb:1024x768-16@75,accel=0
 345          */
 346
 347         while ((this_opt = strsep(&options, ","))) {
 348                 if (!*this_opt)
 349                         continue;
 350                 if (get_opt_bool(this_opt, "accel", &accel))
 351                         ;
 352                 else if (get_opt_int(this_opt, "vram", &vram))
 353                         ;
 354                 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
 355                         ;
 356                 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
 357                         ;
 358                 else if (get_opt_bool(this_opt, "fixed", &fixed))
 359                         ;
 360                 else if (get_opt_bool(this_opt, "init", &noinit))
 361                         noinit = !noinit;
 362                 else if (OPT_EQUAL(this_opt, "mode="))
 363                         mode = get_opt_string(this_opt, "mode=");
 364                 else
 365                         mode = this_opt;
 366         }
 367
 368         return 0;
 369 }
 370
 371 #endif
 372
 373 static int __init
 374 intelfb_init(void)
 375 {
 376 #ifndef MODULE
 377         char *option = NULL;
 378 #endif
 379
 380         DBG_MSG("intelfb_init\n");
 381
 382         INF_MSG("Framebuffer driver for "
 383                 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
 384         INF_MSG("Version " INTELFB_VERSION "\n");
 385
 386         if (idonly)
 387                 return -ENODEV;
 388
 389 #ifndef MODULE
 390         if (fb_get_options("intelfb", &option))
 391                 return -ENODEV;
 392         intelfb_setup(option);
 393 #endif
 394
 395         return pci_register_driver(&intelfb_driver);
 396 }
 397
 398 static void __exit
 399 intelfb_exit(void)
 400 {
 401         DBG_MSG("intelfb_exit\n");
 402         pci_unregister_driver(&intelfb_driver);
 403 }
 404
 405 module_init(intelfb_init);
 406 module_exit(intelfb_exit);
 407
 408 /***************************************************************
 409  *                     mtrr support functions                  *
 410  ***************************************************************/
 411
 412 #ifdef CONFIG_MTRR
 413 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
 414 {
 415         dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
 416                                    dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
 417         if (dinfo->mtrr_reg < 0) {
 418                 ERR_MSG("unable to set MTRR\n");
 419                 return;
 420         }
 421         dinfo->has_mtrr = 1;
 422 }
 423 static inline void unset_mtrr(struct intelfb_info *dinfo)
 424 {
 425         if (dinfo->has_mtrr)
 426                 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
 427                          dinfo->aperture.size);
 428 }
 429 #else
 430 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
 431
 432 #define unset_mtrr(x) do { } while (0)
 433 #endif /* CONFIG_MTRR */
 434
 435 /***************************************************************
 436  *                        driver init / cleanup                *
 437  ***************************************************************/
 438
 439 static void
 440 cleanup(struct intelfb_info *dinfo)
 441 {
 442         DBG_MSG("cleanup\n");
 443
 444         if (!dinfo)
 445                 return;
 446
 447         fb_dealloc_cmap(&dinfo->info->cmap);
 448         kfree(dinfo->info->pixmap.addr);
 449
 450         if (dinfo->registered)
 451                 unregister_framebuffer(dinfo->info);
 452
 453         unset_mtrr(dinfo);
 454
 455         if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
 456                 agp_unbind_memory(dinfo->gtt_fb_mem);
 457                 agp_free_memory(dinfo->gtt_fb_mem);
 458         }
 459         if (dinfo->gtt_cursor_mem) {
 460                 agp_unbind_memory(dinfo->gtt_cursor_mem);
 461                 agp_free_memory(dinfo->gtt_cursor_mem);
 462         }
 463         if (dinfo->gtt_ring_mem) {
 464                 agp_unbind_memory(dinfo->gtt_ring_mem);
 465                 agp_free_memory(dinfo->gtt_ring_mem);
 466         }
 467
 468         if (dinfo->mmio_base)
 469                 iounmap((void __iomem *)dinfo->mmio_base);
 470         if (dinfo->aperture.virtual)
 471                 iounmap((void __iomem *)dinfo->aperture.virtual);
 472
 473         if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
 474                 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
 475         if (dinfo->flag & INTELFB_FB_ACQUIRED)
 476                 release_mem_region(dinfo->aperture.physical,
 477                                    dinfo->aperture.size);
 478         framebuffer_release(dinfo->info);
 479 }
 480
 481 #define bailout(dinfo) do {                                             \
 482         DBG_MSG("bailout\n");                                           \
 483         cleanup(dinfo);                                                 \
 484         INF_MSG("Not going to register framebuffer, exiting...\n");     \
 485         return -ENODEV;                                                 \
 486 } while (0)
 487
 488
 489 static int __devinit
 490 intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
 491 {
 492         struct fb_info *info;
 493         struct intelfb_info *dinfo;
 494         int i, err, dvo;
 495         int aperture_size, stolen_size;
 496         struct agp_kern_info gtt_info;
 497         int agp_memtype;
 498         const char *s;
 499         struct agp_bridge_data *bridge;
 500         int aperture_bar = 0;
 501         int mmio_bar = 1;
 502         int offset;
 503
 504         DBG_MSG("intelfb_pci_register\n");
 505
 506         num_registered++;
 507         if (num_registered != 1) {
 508                 ERR_MSG("Attempted to register %d devices "
 509                         "(should be only 1).\n", num_registered);
 510                 return -ENODEV;
 511         }
 512
 513         info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
 514         if (!info) {
 515                 ERR_MSG("Could not allocate memory for intelfb_info.\n");
 516                 return -ENODEV;
 517         }
 518         if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
 519                 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
 520                 goto err_out_cmap;
 521                 return -ENODEV;
 522         }
 523
 524         dinfo = info->par;
 525         dinfo->info  = info;
 526         dinfo->fbops = &intel_fb_ops;
 527         dinfo->pdev  = pdev;
 528
 529         /* Reserve pixmap space. */
 530         info->pixmap.addr = kmalloc(64 * 1024, GFP_KERNEL);
 531         if (info->pixmap.addr == NULL) {
 532                 ERR_MSG("Cannot reserve pixmap memory.\n");
 533                 goto err_out_pixmap;
 534         }
 535         memset(info->pixmap.addr, 0, 64 * 1024);
 536
 537         /* set early this option because it could be changed by tv encoder
 538            driver */
 539         dinfo->fixed_mode = fixed;
 540
 541         /* Enable device. */
 542         if ((err = pci_enable_device(pdev))) {
 543                 ERR_MSG("Cannot enable device.\n");
 544                 cleanup(dinfo);
 545                 return -ENODEV;
 546         }
 547
 548         /* Set base addresses. */
 549         if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
 550             (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
 551             (ent->device == PCI_DEVICE_ID_INTEL_945G)) {
 552                 aperture_bar = 2;
 553                 mmio_bar = 0;
 554                 /* Disable HW cursor on 9x5G/M (not implemented yet) */
 555                 hwcursor = 0;
 556         }
 557         dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
 558         dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
 559         dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
 560         DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
 561                 (unsigned long long)pci_resource_start(pdev, aperture_bar),
 562                 (unsigned long long)pci_resource_len(pdev, aperture_bar),
 563                 (unsigned long long)pci_resource_start(pdev, mmio_bar),
 564                 (unsigned long long)pci_resource_len(pdev, mmio_bar));
 565
 566         /* Reserve the fb and MMIO regions */
 567         if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
 568                                 INTELFB_MODULE_NAME)) {
 569                 ERR_MSG("Cannot reserve FB region.\n");
 570                 cleanup(dinfo);
 571                 return -ENODEV;
 572         }
 573
 574         dinfo->flag |= INTELFB_FB_ACQUIRED;
 575
 576         if (!request_mem_region(dinfo->mmio_base_phys,
 577                                 INTEL_REG_SIZE,
 578                                 INTELFB_MODULE_NAME)) {
 579                 ERR_MSG("Cannot reserve MMIO region.\n");
 580                 cleanup(dinfo);
 581                 return -ENODEV;
 582         }
 583
 584         dinfo->flag |= INTELFB_MMIO_ACQUIRED;
 585
 586         /* Get the chipset info. */
 587         dinfo->pci_chipset = pdev->device;
 588
 589         if (intelfbhw_get_chipset(pdev, dinfo)) {
 590                 cleanup(dinfo);
 591                 return -ENODEV;
 592         }
 593
 594         if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
 595                 cleanup(dinfo);
 596                 return -ENODEV;
 597         }
 598
 599         INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
 600                 "stolen memory %dkB\n",
 601                 pdev->bus->number, PCI_SLOT(pdev->devfn),
 602                 PCI_FUNC(pdev->devfn), dinfo->name,
 603                 BtoMB(aperture_size), BtoKB(stolen_size));
 604
 605         /* Set these from the options. */
 606         dinfo->accel    = accel;
 607         dinfo->hwcursor = hwcursor;
 608
 609         if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
 610                 INF_MSG("Acceleration is not supported for the %s chipset.\n",
 611                         dinfo->name);
 612                 dinfo->accel = 0;
 613         }
 614
 615         /* Framebuffer parameters - Use all the stolen memory if >= vram */
 616         if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
 617                 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
 618                 dinfo->fbmem_gart = 0;
 619         } else {
 620                 dinfo->fb.size =  MB(vram);
 621                 dinfo->fbmem_gart = 1;
 622         }
 623
 624         /* Allocate space for the ring buffer and HW cursor if enabled. */
 625         if (dinfo->accel) {
 626                 dinfo->ring.size = RINGBUFFER_SIZE;
 627                 dinfo->ring_tail_mask = dinfo->ring.size - 1;
 628         }
 629         if (dinfo->hwcursor) {
 630                 dinfo->cursor.size = HW_CURSOR_SIZE;
 631         }
 632
 633         /* Use agpgart to manage the GATT */
 634         if (!(bridge = agp_backend_acquire(pdev))) {
 635                 ERR_MSG("cannot acquire agp\n");
 636                 cleanup(dinfo);
 637                 return -ENODEV;
 638         }
 639
 640         /* get the current gatt info */
 641         if (agp_copy_info(bridge, &gtt_info)) {
 642                 ERR_MSG("cannot get agp info\n");
 643                 agp_backend_release(bridge);
 644                 cleanup(dinfo);
 645                 return -ENODEV;
 646         }
 647
 648         if (MB(voffset) < stolen_size)
 649                 offset = (stolen_size >> 12);
 650         else
 651                 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
 652
 653         /* set the mem offsets - set them after the already used pages */
 654         if (dinfo->accel) {
 655                 dinfo->ring.offset = offset + gtt_info.current_memory;
 656         }
 657         if (dinfo->hwcursor) {
 658                 dinfo->cursor.offset = offset +
 659                         + gtt_info.current_memory + (dinfo->ring.size >> 12);
 660         }
 661         if (dinfo->fbmem_gart) {
 662                 dinfo->fb.offset = offset +
 663                         + gtt_info.current_memory + (dinfo->ring.size >> 12)
 664                         + (dinfo->cursor.size >> 12);
 665         }
 666
 667         /* Allocate memories (which aren't stolen) */
 668         /* Map the fb and MMIO regions */
 669         /* ioremap only up to the end of used aperture */
 670         dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
 671                 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
 672                  + dinfo->fb.size);
 673         if (!dinfo->aperture.virtual) {
 674                 ERR_MSG("Cannot remap FB region.\n");
 675                 cleanup(dinfo);
 676                 return -ENODEV;
 677         }
 678
 679         dinfo->mmio_base =
 680                 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
 681                                                INTEL_REG_SIZE);
 682         if (!dinfo->mmio_base) {
 683                 ERR_MSG("Cannot remap MMIO region.\n");
 684                 cleanup(dinfo);
 685                 return -ENODEV;
 686         }
 687
 688         if (dinfo->accel) {
 689                 if (!(dinfo->gtt_ring_mem =
 690                       agp_allocate_memory(bridge, dinfo->ring.size >> 12,
 691                                           AGP_NORMAL_MEMORY))) {
 692                         ERR_MSG("cannot allocate ring buffer memory\n");
 693                         agp_backend_release(bridge);
 694                         cleanup(dinfo);
 695                         return -ENOMEM;
 696                 }
 697                 if (agp_bind_memory(dinfo->gtt_ring_mem,
 698                                     dinfo->ring.offset)) {
 699                         ERR_MSG("cannot bind ring buffer memory\n");
 700                         agp_backend_release(bridge);
 701                         cleanup(dinfo);
 702                         return -EBUSY;
 703                 }
 704                 dinfo->ring.physical = dinfo->aperture.physical
 705                         + (dinfo->ring.offset << 12);
 706                 dinfo->ring.virtual  = dinfo->aperture.virtual
 707                         + (dinfo->ring.offset << 12);
 708                 dinfo->ring_head = dinfo->ring.virtual;
 709         }
 710         if (dinfo->hwcursor) {
 711                 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
 712                         : AGP_NORMAL_MEMORY;
 713                 if (!(dinfo->gtt_cursor_mem =
 714                       agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
 715                                           agp_memtype))) {
 716                         ERR_MSG("cannot allocate cursor memory\n");
 717                         agp_backend_release(bridge);
 718                         cleanup(dinfo);
 719                         return -ENOMEM;
 720                 }
 721                 if (agp_bind_memory(dinfo->gtt_cursor_mem,
 722                                     dinfo->cursor.offset)) {
 723                         ERR_MSG("cannot bind cursor memory\n");
 724                         agp_backend_release(bridge);
 725                         cleanup(dinfo);
 726                         return -EBUSY;
 727                 }
 728                 if (dinfo->mobile)
 729                         dinfo->cursor.physical
 730                                 = dinfo->gtt_cursor_mem->physical;
 731                 else
 732                         dinfo->cursor.physical = dinfo->aperture.physical
 733                                 + (dinfo->cursor.offset << 12);
 734                 dinfo->cursor.virtual = dinfo->aperture.virtual
 735                         + (dinfo->cursor.offset << 12);
 736         }
 737         if (dinfo->fbmem_gart) {
 738                 if (!(dinfo->gtt_fb_mem =
 739                       agp_allocate_memory(bridge, dinfo->fb.size >> 12,
 740                                           AGP_NORMAL_MEMORY))) {
 741                         WRN_MSG("cannot allocate framebuffer memory - use "
 742                                 "the stolen one\n");
 743                         dinfo->fbmem_gart = 0;
 744                 }
 745                 if (agp_bind_memory(dinfo->gtt_fb_mem,
 746                                     dinfo->fb.offset)) {
 747                         WRN_MSG("cannot bind framebuffer memory - use "
 748                                 "the stolen one\n");
 749                         dinfo->fbmem_gart = 0;
 750                 }
 751         }
 752
 753         /* update framebuffer memory parameters */
 754         if (!dinfo->fbmem_gart)
 755                 dinfo->fb.offset = 0;   /* starts at offset 0 */
 756         dinfo->fb.physical = dinfo->aperture.physical
 757                 + (dinfo->fb.offset << 12);
 758         dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
 759         dinfo->fb_start = dinfo->fb.offset << 12;
 760
 761         /* release agpgart */
 762         agp_backend_release(bridge);
 763
 764         if (mtrr)
 765                 set_mtrr(dinfo);
 766
 767         DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%x)\n",
 768                 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
 769                 (u32 __iomem ) dinfo->fb.virtual);
 770         DBG_MSG("MMIO: 0x%x/0x%x (0x%x)\n",
 771                 dinfo->mmio_base_phys, INTEL_REG_SIZE,
 772                 (u32 __iomem) dinfo->mmio_base);
 773         DBG_MSG("ring buffer: 0x%x/0x%x (0x%x)\n",
 774                 dinfo->ring.physical, dinfo->ring.size,
 775                 (u32 __iomem ) dinfo->ring.virtual);
 776         DBG_MSG("HW cursor: 0x%x/0x%x (0x%x) (offset 0x%x) (phys 0x%x)\n",
 777                 dinfo->cursor.physical, dinfo->cursor.size,
 778                 (u32 __iomem ) dinfo->cursor.virtual, dinfo->cursor.offset,
 779                 dinfo->cursor.physical);
 780
 781         DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
 782                 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
 783         DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
 784
 785         if (probeonly)
 786                 bailout(dinfo);
 787
 788         /*
 789          * Check if the LVDS port or any DVO ports are enabled.  If so,
 790          * don't allow mode switching
 791          */
 792         dvo = intelfbhw_check_non_crt(dinfo);
 793         if (dvo) {
 794                 dinfo->fixed_mode = 1;
 795                 WRN_MSG("Non-CRT device is enabled ( ");
 796                 i = 0;
 797                 while (dvo) {
 798                         if (dvo & 1) {
 799                                 s = intelfbhw_dvo_to_string(1 << i);
 800                                 if (s)
 801                                         printk("%s ", s);
 802                         }
 803                         dvo >>= 1;
 804                         ++i;
 805                 }
 806                 printk(").  Disabling mode switching.\n");
 807         }
 808
 809         if (bailearly == 1)
 810                 bailout(dinfo);
 811
 812         if (FIXED_MODE(dinfo) && ORIG_VIDEO_ISVGA != VIDEO_TYPE_VLFB) {
 813                 ERR_MSG("Video mode must be programmed at boot time.\n");
 814                 cleanup(dinfo);
 815                 return -ENODEV;
 816         }
 817
 818         if (bailearly == 2)
 819                 bailout(dinfo);
 820
 821         /* Initialise dinfo and related data. */
 822         /* If an initial mode was programmed at boot time, get its details. */
 823         if (ORIG_VIDEO_ISVGA == VIDEO_TYPE_VLFB)
 824                 get_initial_mode(dinfo);
 825
 826         if (bailearly == 3)
 827                 bailout(dinfo);
 828
 829         if (FIXED_MODE(dinfo)) {
 830                 /* remap fb address */
 831                 update_dinfo(dinfo, &dinfo->initial_var);
 832         }
 833
 834         if (bailearly == 4)
 835                 bailout(dinfo);
 836
 837
 838         if (intelfb_set_fbinfo(dinfo)) {
 839                 cleanup(dinfo);
 840                 return -ENODEV;
 841         }
 842
 843         if (bailearly == 5)
 844                 bailout(dinfo);
 845
 846         if (bailearly == 6)
 847                 bailout(dinfo);
 848
 849         pci_set_drvdata(pdev, dinfo);
 850
 851         /* Save the initial register state. */
 852         i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
 853                                     bailearly > 6 ? bailearly - 6 : 0);
 854         if (i != 0) {
 855                 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
 856                 bailout(dinfo);
 857         }
 858
 859         intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
 860
 861         if (bailearly == 18)
 862                 bailout(dinfo);
 863
 864         /* Cursor initialisation */
 865         if (dinfo->hwcursor) {
 866                 intelfbhw_cursor_init(dinfo);
 867                 intelfbhw_cursor_reset(dinfo);
 868         }
 869
 870         if (bailearly == 19)
 871                 bailout(dinfo);
 872
 873         /* 2d acceleration init */
 874         if (dinfo->accel)
 875                 intelfbhw_2d_start(dinfo);
 876
 877         if (bailearly == 20)
 878                 bailout(dinfo);
 879
 880         if (noregister)
 881                 bailout(dinfo);
 882
 883         if (register_framebuffer(dinfo->info) < 0) {
 884                 ERR_MSG("Cannot register framebuffer.\n");
 885                 cleanup(dinfo);
 886                 return -ENODEV;
 887         }
 888
 889         dinfo->registered = 1;
 890
 891         return 0;
 892
 893 err_out_pixmap:
 894         fb_dealloc_cmap(&info->cmap);
 895 err_out_cmap:
 896         framebuffer_release(info);
 897         return -ENODEV;
 898 }
 899
 900 static void __devexit
 901 intelfb_pci_unregister(struct pci_dev *pdev)
 902 {
 903         struct intelfb_info *dinfo = pci_get_drvdata(pdev);
 904
 905         DBG_MSG("intelfb_pci_unregister\n");
 906
 907         if (!dinfo)
 908                 return;
 909
 910         cleanup(dinfo);
 911
 912         pci_set_drvdata(pdev, NULL);
 913 }
 914
 915 /***************************************************************
 916  *                       helper functions                      *
 917  ***************************************************************/
 918
 919 int __inline__
 920 intelfb_var_to_depth(const struct fb_var_screeninfo *var)
 921 {
 922         DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
 923                 var->bits_per_pixel, var->green.length);
 924
 925         switch (var->bits_per_pixel) {
 926         case 16:
 927                 return (var->green.length == 6) ? 16 : 15;
 928         case 32:
 929                 return 24;
 930         default:
 931                 return var->bits_per_pixel;
 932         }
 933 }
 934
 935
 936 static __inline__ int
 937 var_to_refresh(const struct fb_var_screeninfo *var)
 938 {
 939         int xtot = var->xres + var->left_margin + var->right_margin +
 940                    var->hsync_len;
 941         int ytot = var->yres + var->upper_margin + var->lower_margin +
 942                    var->vsync_len;
 943
 944         return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
 945 }
 946
 947 /***************************************************************
 948  *                Various intialisation functions              *
 949  ***************************************************************/
 950
 951 static void __devinit
 952 get_initial_mode(struct intelfb_info *dinfo)
 953 {
 954         struct fb_var_screeninfo *var;
 955         int xtot, ytot;
 956
 957         DBG_MSG("get_initial_mode\n");
 958
 959         dinfo->initial_vga = 1;
 960         dinfo->initial_fb_base = screen_info.lfb_base;
 961         dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
 962         dinfo->initial_pitch = screen_info.lfb_linelength;
 963
 964         var = &dinfo->initial_var;
 965         memset(var, 0, sizeof(*var));
 966         var->xres = screen_info.lfb_width;
 967         var->yres = screen_info.lfb_height;
 968         var->bits_per_pixel = screen_info.lfb_depth;
 969         switch (screen_info.lfb_depth) {
 970         case 15:
 971                 var->bits_per_pixel = 16;
 972                 break;
 973         case 24:
 974                 var->bits_per_pixel = 32;
 975                 break;
 976         }
 977
 978         DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
 979                 dinfo->initial_fb_base, dinfo->initial_video_ram,
 980                 BtoKB(dinfo->initial_video_ram));
 981
 982         DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
 983                 var->xres, var->yres, var->bits_per_pixel,
 984                 dinfo->initial_pitch);
 985
 986         /* Dummy timing values (assume 60Hz) */
 987         var->left_margin = (var->xres / 8) & 0xf8;
 988         var->right_margin = 32;
 989         var->upper_margin = 16;
 990         var->lower_margin = 4;
 991         var->hsync_len = (var->xres / 8) & 0xf8;
 992         var->vsync_len = 4;
 993
 994         xtot = var->xres + var->left_margin +
 995                 var->right_margin + var->hsync_len;
 996         ytot = var->yres + var->upper_margin +
 997                 var->lower_margin + var->vsync_len;
 998         var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
 999
1000         var->height = -1;
1001         var->width = -1;
1002
1003         if (var->bits_per_pixel > 8) {
1004                 var->red.offset = screen_info.red_pos;
1005                 var->red.length = screen_info.red_size;
1006                 var->green.offset = screen_info.green_pos;
1007                 var->green.length = screen_info.green_size;
1008                 var->blue.offset = screen_info.blue_pos;
1009                 var->blue.length = screen_info.blue_size;
1010                 var->transp.offset = screen_info.rsvd_pos;
1011                 var->transp.length = screen_info.rsvd_size;
1012         } else {
1013                 var->red.length = 8;
1014                 var->green.length = 8;
1015                 var->blue.length = 8;
1016         }
1017 }
1018
1019 static int __devinit
1020 intelfb_init_var(struct intelfb_info *dinfo)
1021 {
1022         struct fb_var_screeninfo *var;
1023         int msrc = 0;
1024
1025         DBG_MSG("intelfb_init_var\n");
1026
1027         var = &dinfo->info->var;
1028         if (FIXED_MODE(dinfo)) {
1029                 memcpy(var, &dinfo->initial_var,
1030                        sizeof(struct fb_var_screeninfo));
1031                 msrc = 5;
1032         } else {
1033                 if (mode) {
1034                         msrc = fb_find_mode(var, dinfo->info, mode,
1035                                             vesa_modes, VESA_MODEDB_SIZE,
1036                                             NULL, 0);
1037                         if (msrc)
1038                                 msrc |= 8;
1039                 }
1040                 if (!msrc) {
1041                         msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1042                                             vesa_modes, VESA_MODEDB_SIZE,
1043                                             NULL, 0);
1044                 }
1045         }
1046
1047         if (!msrc) {
1048                 ERR_MSG("Cannot find a suitable video mode.\n");
1049                 return 1;
1050         }
1051
1052         INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1053                 var->bits_per_pixel, var_to_refresh(var));
1054
1055         DBG_MSG("Initial video mode is from %d.\n", msrc);
1056
1057 #if ALLOCATE_FOR_PANNING
1058         /* Allow use of half of the video ram for panning */
1059         var->xres_virtual = var->xres;
1060         var->yres_virtual =
1061                 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1062         if (var->yres_virtual < var->yres)
1063                 var->yres_virtual = var->yres;
1064 #else
1065         var->yres_virtual = var->yres;
1066 #endif
1067
1068         if (dinfo->accel)
1069                 var->accel_flags |= FB_ACCELF_TEXT;
1070         else
1071                 var->accel_flags &= ~FB_ACCELF_TEXT;
1072
1073         return 0;
1074 }
1075
1076 static int __devinit
1077 intelfb_set_fbinfo(struct intelfb_info *dinfo)
1078 {
1079         struct fb_info *info = dinfo->info;
1080
1081         DBG_MSG("intelfb_set_fbinfo\n");
1082
1083         info->flags = FBINFO_FLAG_DEFAULT;
1084         info->fbops = &intel_fb_ops;
1085         info->pseudo_palette = dinfo->pseudo_palette;
1086
1087         info->pixmap.size = 64*1024;
1088         info->pixmap.buf_align = 8;
1089         info->pixmap.access_align = 32;
1090         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1091
1092         if (intelfb_init_var(dinfo))
1093                 return 1;
1094
1095         info->pixmap.scan_align = 1;
1096         strcpy(info->fix.id, dinfo->name);
1097         info->fix.smem_start = dinfo->fb.physical;
1098         info->fix.smem_len = dinfo->fb.size;
1099         info->fix.type = FB_TYPE_PACKED_PIXELS;
1100         info->fix.type_aux = 0;
1101         info->fix.xpanstep = 8;
1102         info->fix.ypanstep = 1;
1103         info->fix.ywrapstep = 0;
1104         info->fix.mmio_start = dinfo->mmio_base_phys;
1105         info->fix.mmio_len = INTEL_REG_SIZE;
1106         info->fix.accel = FB_ACCEL_I830;
1107         update_dinfo(dinfo, &info->var);
1108
1109         return 0;
1110 }
1111
1112 /* Update dinfo to match the active video mode. */
1113 static void
1114 update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var)
1115 {
1116         DBG_MSG("update_dinfo\n");
1117
1118         dinfo->bpp = var->bits_per_pixel;
1119         dinfo->depth = intelfb_var_to_depth(var);
1120         dinfo->xres = var->xres;
1121         dinfo->yres = var->xres;
1122         dinfo->pixclock = var->pixclock;
1123
1124         dinfo->info->fix.visual = dinfo->visual;
1125         dinfo->info->fix.line_length = dinfo->pitch;
1126
1127         switch (dinfo->bpp) {
1128         case 8:
1129                 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1130                 dinfo->pitch = var->xres_virtual;
1131                 break;
1132         case 16:
1133                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1134                 dinfo->pitch = var->xres_virtual * 2;
1135                 break;
1136         case 32:
1137                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1138                 dinfo->pitch = var->xres_virtual * 4;
1139                 break;
1140         }
1141
1142         /* Make sure the line length is a aligned correctly. */
1143         dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1144
1145         if (FIXED_MODE(dinfo))
1146                 dinfo->pitch = dinfo->initial_pitch;
1147
1148         dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1149         dinfo->info->fix.line_length = dinfo->pitch;
1150         dinfo->info->fix.visual = dinfo->visual;
1151 }
1152
1153 /* fbops functions */
1154
1155 /***************************************************************
1156  *                       fbdev interface                       *
1157  ***************************************************************/
1158
1159 static int
1160 intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1161 {
1162         int change_var = 0;
1163         struct fb_var_screeninfo v;
1164         struct intelfb_info *dinfo;
1165         static int first = 1;
1166
1167         DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1168
1169         dinfo = GET_DINFO(info);
1170
1171         if (intelfbhw_validate_mode(dinfo, var) != 0)
1172                 return -EINVAL;
1173
1174         v = *var;
1175
1176         /* Check for a supported bpp. */
1177         if (v.bits_per_pixel <= 8) {
1178                 v.bits_per_pixel = 8;
1179         } else if (v.bits_per_pixel <= 16) {
1180                 if (v.bits_per_pixel == 16)
1181                         v.green.length = 6;
1182                 v.bits_per_pixel = 16;
1183         } else if (v.bits_per_pixel <= 32) {
1184                 v.bits_per_pixel = 32;
1185         } else
1186                 return -EINVAL;
1187
1188         change_var = ((info->var.xres != var->xres) ||
1189                       (info->var.yres != var->yres) ||
1190                       (info->var.xres_virtual != var->xres_virtual) ||
1191                       (info->var.yres_virtual != var->yres_virtual) ||
1192                       (info->var.bits_per_pixel != var->bits_per_pixel) ||
1193                       memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1194                       memcmp(&info->var.green, &var->green,
1195                              sizeof(var->green)) ||
1196                       memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1197
1198         if (FIXED_MODE(dinfo) &&
1199             (change_var ||
1200              var->yres_virtual > dinfo->initial_var.yres_virtual ||
1201              var->yres_virtual < dinfo->initial_var.yres ||
1202              var->xoffset || var->nonstd)) {
1203                 if (first) {
1204                         ERR_MSG("Changing the video mode is not supported.\n");
1205                         first = 0;
1206                 }
1207                 return -EINVAL;
1208         }
1209
1210         switch (intelfb_var_to_depth(&v)) {
1211         case 8:
1212                 v.red.offset = v.green.offset = v.blue.offset = 0;
1213                 v.red.length = v.green.length = v.blue.length = 8;
1214                 v.transp.offset = v.transp.length = 0;
1215                 break;
1216         case 15:
1217                 v.red.offset = 10;
1218                 v.green.offset = 5;
1219                 v.blue.offset = 0;
1220                 v.red.length = v.green.length = v.blue.length = 5;
1221                 v.transp.offset = v.transp.length = 0;
1222                 break;
1223         case 16:
1224                 v.red.offset = 11;
1225                 v.green.offset = 5;
1226                 v.blue.offset = 0;
1227                 v.red.length = 5;
1228                 v.green.length = 6;
1229                 v.blue.length = 5;
1230                 v.transp.offset = v.transp.length = 0;
1231                 break;
1232         case 24:
1233                 v.red.offset = 16;
1234                 v.green.offset = 8;
1235                 v.blue.offset = 0;
1236                 v.red.length = v.green.length = v.blue.length = 8;
1237                 v.transp.offset = v.transp.length = 0;
1238                 break;
1239         case 32:
1240                 v.red.offset = 16;
1241                 v.green.offset = 8;
1242                 v.blue.offset = 0;
1243                 v.red.length = v.green.length = v.blue.length = 8;
1244                 v.transp.offset = 24;
1245                 v.transp.length = 8;
1246                 break;
1247         }
1248
1249         if (v.xoffset < 0)
1250                 v.xoffset = 0;
1251         if (v.yoffset < 0)
1252                 v.yoffset = 0;
1253
1254         if (v.xoffset > v.xres_virtual - v.xres)
1255                 v.xoffset = v.xres_virtual - v.xres;
1256         if (v.yoffset > v.yres_virtual - v.yres)
1257                 v.yoffset = v.yres_virtual - v.yres;
1258
1259         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1260                           v.transp.msb_right = 0;
1261
1262         *var = v;
1263
1264         return 0;
1265 }
1266
1267 static int
1268 intelfb_set_par(struct fb_info *info)
1269 {
1270         struct intelfb_hwstate *hw;
1271         struct intelfb_info *dinfo = GET_DINFO(info);
1272
1273         if (FIXED_MODE(dinfo)) {
1274                 ERR_MSG("Changing the video mode is not supported.\n");
1275                 return -EINVAL;
1276         }
1277
1278         hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1279         if (!hw)
1280                 return -ENOMEM;
1281
1282         DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1283                 info->var.yres, info->var.bits_per_pixel);
1284
1285         intelfb_blank(FB_BLANK_POWERDOWN, info);
1286
1287         if (ACCEL(dinfo, info))
1288                 intelfbhw_2d_stop(dinfo);
1289
1290         memcpy(hw, &dinfo->save_state, sizeof(*hw));
1291         if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1292                 goto invalid_mode;
1293         if (intelfbhw_program_mode(dinfo, hw, 0))
1294                 goto invalid_mode;
1295
1296 #if REGDUMP > 0
1297         intelfbhw_read_hw_state(dinfo, hw, 0);
1298         intelfbhw_print_hw_state(dinfo, hw);
1299 #endif
1300
1301         update_dinfo(dinfo, &info->var);
1302
1303         if (ACCEL(dinfo, info))
1304                 intelfbhw_2d_start(dinfo);
1305
1306         intelfb_pan_display(&info->var, info);
1307
1308         intelfb_blank(FB_BLANK_UNBLANK, info);
1309
1310         if (ACCEL(dinfo, info)) {
1311                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1312                 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1313                 FBINFO_HWACCEL_IMAGEBLIT;
1314         } else {
1315                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1316         }
1317         kfree(hw);
1318         return 0;
1319 invalid_mode:
1320         kfree(hw);
1321         return -EINVAL;
1322 }
1323
1324 static int
1325 intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1326                   unsigned blue, unsigned transp, struct fb_info *info)
1327 {
1328         struct intelfb_info *dinfo = GET_DINFO(info);
1329
1330 #if VERBOSE > 0
1331         DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1332 #endif
1333
1334         if (regno > 255)
1335                 return 1;
1336
1337         if (dinfo->depth == 8) {
1338                 red >>= 8;
1339                 green >>= 8;
1340                 blue >>= 8;
1341
1342                 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1343                                     transp);
1344         }
1345
1346         if (regno < 16) {
1347                 switch (dinfo->depth) {
1348                 case 15:
1349                         dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1350                                 ((green & 0xf800) >>  6) |
1351                                 ((blue & 0xf800) >> 11);
1352                         break;
1353                 case 16:
1354                         dinfo->pseudo_palette[regno] = (red & 0xf800) |
1355                                 ((green & 0xfc00) >>  5) |
1356                                 ((blue  & 0xf800) >> 11);
1357                         break;
1358                 case 24:
1359                         dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1360                                 (green & 0xff00) |
1361                                 ((blue  & 0xff00) >> 8);
1362                         break;
1363                 }
1364         }
1365
1366         return 0;
1367 }
1368
1369 static int
1370 intelfb_blank(int blank, struct fb_info *info)
1371 {
1372         intelfbhw_do_blank(blank, info);
1373         return 0;
1374 }
1375
1376 static int
1377 intelfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1378 {
1379         intelfbhw_pan_display(var, info);
1380         return 0;
1381 }
1382
1383 /* When/if we have our own ioctls. */
1384 static int
1385 intelfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
1386 {
1387         int retval = 0;
1388
1389         return retval;
1390 }
1391
1392 static void
1393 intelfb_fillrect (struct fb_info *info, const struct fb_fillrect *rect)
1394 {
1395         struct intelfb_info *dinfo = GET_DINFO(info);
1396         u32 rop, color;
1397
1398 #if VERBOSE > 0
1399         DBG_MSG("intelfb_fillrect\n");
1400 #endif
1401
1402         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1403                 return cfb_fillrect(info, rect);
1404
1405         if (rect->rop == ROP_COPY)
1406                 rop = PAT_ROP_GXCOPY;
1407         else // ROP_XOR
1408                 rop = PAT_ROP_GXXOR;
1409
1410         if (dinfo->depth != 8)
1411                 color = dinfo->pseudo_palette[rect->color];
1412         else
1413                 color = rect->color;
1414
1415         intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1416                               rect->width, rect->height, color,
1417                               dinfo->pitch, info->var.bits_per_pixel,
1418                               rop);
1419 }
1420
1421 static void
1422 intelfb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
1423 {
1424         struct intelfb_info *dinfo = GET_DINFO(info);
1425
1426 #if VERBOSE > 0
1427         DBG_MSG("intelfb_copyarea\n");
1428 #endif
1429
1430         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1431                 return cfb_copyarea(info, region);
1432
1433         intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1434                             region->dy, region->width, region->height,
1435                             dinfo->pitch, info->var.bits_per_pixel);
1436 }
1437
1438 static void
1439 intelfb_imageblit(struct fb_info *info, const struct fb_image *image)
1440 {
1441         struct intelfb_info *dinfo = GET_DINFO(info);
1442         u32 fgcolor, bgcolor;
1443
1444 #if VERBOSE > 0
1445         DBG_MSG("intelfb_imageblit\n");
1446 #endif
1447
1448         if (!ACCEL(dinfo, info) || dinfo->depth == 4
1449             || image->depth != 1)
1450                 return cfb_imageblit(info, image);
1451
1452         if (dinfo->depth != 8) {
1453                 fgcolor = dinfo->pseudo_palette[image->fg_color];
1454                 bgcolor = dinfo->pseudo_palette[image->bg_color];
1455         } else {
1456                 fgcolor = image->fg_color;
1457                 bgcolor = image->bg_color;
1458         }
1459
1460         if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1461                                     image->height, image->data,
1462                                     image->dx, image->dy,
1463                                     dinfo->pitch, info->var.bits_per_pixel))
1464                 return cfb_imageblit(info, image);
1465 }
1466
1467 static int
1468 intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1469 {
1470         struct intelfb_info *dinfo = GET_DINFO(info);
1471
1472 #if VERBOSE > 0
1473         DBG_MSG("intelfb_cursor\n");
1474 #endif
1475
1476         if (!dinfo->hwcursor)
1477                 return -ENODEV;
1478
1479         intelfbhw_cursor_hide(dinfo);
1480
1481         /* If XFree killed the cursor - restore it */
1482         if (INREG(CURSOR_A_BASEADDR) != dinfo->cursor.offset << 12) {
1483                 u32 fg, bg;
1484
1485                 DBG_MSG("the cursor was killed - restore it !!\n");
1486                 DBG_MSG("size %d, %d   pos %d, %d\n",
1487                         cursor->image.width, cursor->image.height,
1488                         cursor->image.dx, cursor->image.dy);
1489
1490                 intelfbhw_cursor_init(dinfo);
1491                 intelfbhw_cursor_reset(dinfo);
1492                 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1493                                         cursor->image.dy);
1494
1495                 if (dinfo->depth != 8) {
1496                         fg =dinfo->pseudo_palette[cursor->image.fg_color];
1497                         bg =dinfo->pseudo_palette[cursor->image.bg_color];
1498                 } else {
1499                         fg = cursor->image.fg_color;
1500                         bg = cursor->image.bg_color;
1501                 }
1502                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1503                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1504                                       cursor->image.height,
1505                                       dinfo->cursor_src);
1506
1507                 if (cursor->enable)
1508                         intelfbhw_cursor_show(dinfo);
1509                 return 0;
1510         }
1511
1512         if (cursor->set & FB_CUR_SETPOS) {
1513                 u32 dx, dy;
1514
1515                 dx = cursor->image.dx - info->var.xoffset;
1516                 dy = cursor->image.dy - info->var.yoffset;
1517
1518                 intelfbhw_cursor_setpos(dinfo, dx, dy);
1519         }
1520
1521         if (cursor->set & FB_CUR_SETSIZE) {
1522                 if (cursor->image.width > 64 || cursor->image.height > 64)
1523                         return -ENXIO;
1524
1525                 intelfbhw_cursor_reset(dinfo);
1526         }
1527
1528         if (cursor->set & FB_CUR_SETCMAP) {
1529                 u32 fg, bg;
1530
1531                 if (dinfo->depth != 8) {
1532                         fg = dinfo->pseudo_palette[cursor->image.fg_color];
1533                         bg = dinfo->pseudo_palette[cursor->image.bg_color];
1534                 } else {
1535                         fg = cursor->image.fg_color;
1536                         bg = cursor->image.bg_color;
1537                 }
1538
1539                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1540         }
1541
1542         if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1543                 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1544                 u32 size = s_pitch * cursor->image.height;
1545                 u8 *dat = (u8 *) cursor->image.data;
1546                 u8 *msk = (u8 *) cursor->mask;
1547                 u8 src[64];
1548                 u32 i;
1549
1550                 if (cursor->image.depth != 1)
1551                         return -ENXIO;
1552
1553                 switch (cursor->rop) {
1554                 case ROP_XOR:
1555                         for (i = 0; i < size; i++)
1556                                 src[i] = dat[i] ^ msk[i];
1557                         break;
1558                 case ROP_COPY:
1559                 default:
1560                         for (i = 0; i < size; i++)
1561                                 src[i] = dat[i] & msk[i];
1562                         break;
1563                 }
1564
1565                 /* save the bitmap to restore it when XFree will
1566                    make the cursor dirty */
1567                 memcpy(dinfo->cursor_src, src, size);
1568
1569                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1570                                       cursor->image.height, src);
1571         }
1572
1573         if (cursor->enable)
1574                 intelfbhw_cursor_show(dinfo);
1575
1576         return 0;
1577 }
1578
1579 static int
1580 intelfb_sync(struct fb_info *info)
1581 {
1582         struct intelfb_info *dinfo = GET_DINFO(info);
1583
1584 #if VERBOSE > 0
1585         DBG_MSG("intelfb_sync\n");
1586 #endif
1587
1588         if (dinfo->ring_lockup)
1589                 return 0;
1590
1591         intelfbhw_do_sync(dinfo);
1592         return 0;
1593 }
1594