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

   1 /*
   2  * intelfb
   3  *
   4  * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM/
   5  * 945G/945GM/945GME/965G/965GM integrated graphics chips.
   6  *
   7  * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org>
   8  *                   2004 Sylvain Meyer
   9  *                   2006 David Airlie
  10  *
  11  * This driver consists of two parts.  The first part (intelfbdrv.c) provides
  12  * the basic fbdev interfaces, is derived in part from the radeonfb and
  13  * vesafb drivers, and is covered by the GPL.  The second part (intelfbhw.c)
  14  * provides the code to program the hardware.  Most of it is derived from
  15  * the i810/i830 XFree86 driver.  The HW-specific code is covered here
  16  * under a dual license (GPL and MIT/XFree86 license).
  17  *
  18  * Author: David Dawes
  19  *
  20  */
  21
  22 /* $DHD: intelfb/intelfbdrv.c,v 1.20 2003/06/27 15:17:40 dawes Exp $ */
  23
  24 /*
  25  * Changes:
  26  *    01/2003 - Initial driver (0.1.0), no mode switching, no acceleration.
  27  *              This initial version is a basic core that works a lot like
  28  *              the vesafb driver.  It must be built-in to the kernel,
  29  *              and the initial video mode must be set with vga=XXX at
  30  *              boot time.  (David Dawes)
  31  *
  32  *    01/2003 - Version 0.2.0: Mode switching added, colormap support
  33  *              implemented, Y panning, and soft screen blanking implemented.
  34  *              No acceleration yet.  (David Dawes)
  35  *
  36  *    01/2003 - Version 0.3.0: fbcon acceleration support added.  Module
  37  *              option handling added.  (David Dawes)
  38  *
  39  *    01/2003 - Version 0.4.0: fbcon HW cursor support added.  (David Dawes)
  40  *
  41  *    01/2003 - Version 0.4.1: Add auto-generation of built-in modes.
  42  *              (David Dawes)
  43  *
  44  *    02/2003 - Version 0.4.2: Add check for active non-CRT devices, and
  45  *              mode validation checks.  (David Dawes)
  46  *
  47  *    02/2003 - Version 0.4.3: Check when the VC is in graphics mode so that
  48  *              acceleration is disabled while an XFree86 server is running.
  49  *              (David Dawes)
  50  *
  51  *    02/2003 - Version 0.4.4: Monitor DPMS support.  (David Dawes)
  52  *
  53  *    02/2003 - Version 0.4.5: Basic XFree86 + fbdev working.  (David Dawes)
  54  *
  55  *    02/2003 - Version 0.5.0: Modify to work with the 2.5.32 kernel as well
  56  *              as 2.4.x kernels.  (David Dawes)
  57  *
  58  *    02/2003 - Version 0.6.0: Split out HW-specifics into a separate file.
  59  *              (David Dawes)
  60  *
  61  *    02/2003 - Version 0.7.0: Test on 852GM/855GM.  Acceleration and HW
  62  *              cursor are disabled on this platform.  (David Dawes)
  63  *
  64  *    02/2003 - Version 0.7.1: Test on 845G.  Acceleration is disabled
  65  *              on this platform.  (David Dawes)
  66  *
  67  *    02/2003 - Version 0.7.2: Test on 830M.  Acceleration and HW
  68  *              cursor are disabled on this platform.  (David Dawes)
  69  *
  70  *    02/2003 - Version 0.7.3: Fix 8-bit modes for mobile platforms
  71  *              (David Dawes)
  72  *
  73  *    02/2003 - Version 0.7.4: Add checks for FB and FBCON_HAS_CFB* configured
  74  *              in the kernel, and add mode bpp verification and default
  75  *              bpp selection based on which FBCON_HAS_CFB* are configured.
  76  *              (David Dawes)
  77  *
  78  *    02/2003 - Version 0.7.5: Add basic package/install scripts based on the
  79  *              DRI packaging scripts.  (David Dawes)
  80  *
  81  *    04/2003 - Version 0.7.6: Fix typo that affects builds with SMP-enabled
  82  *              kernels.  (David Dawes, reported by Anupam).
  83  *
  84  *    06/2003 - Version 0.7.7:
  85  *              Fix Makefile.kernel build problem (Tsutomu Yasuda).
  86  *              Fix mis-placed #endif (2.4.21 kernel).
  87  *
  88  *    09/2004 - Version 0.9.0 - by Sylvain Meyer
  89  *              Port to linux 2.6 kernel fbdev
  90  *              Fix HW accel and HW cursor on i845G
  91  *              Use of agpgart for fb memory reservation
  92  *              Add mtrr support
  93  *
  94  *    10/2004 - Version 0.9.1
  95  *              Use module_param instead of old MODULE_PARM
  96  *              Some cleanup
  97  *
  98  *    11/2004 - Version 0.9.2
  99  *              Add vram option to reserve more memory than stolen by BIOS
 100  *              Fix intelfbhw_pan_display typo
 101  *              Add __initdata annotations
 102  *
 103  *    04/2008 - Version 0.9.5
 104  *              Add support for 965G/965GM. (Maik Broemme <mbroemme@plusserver.de>)
 105  *
 106  *    08/2008 - Version 0.9.6
 107  *              Add support for 945GME. (Phil Endecott <spam_from_intelfb@chezphil.org>)
 108  */
 109
 110 #include <linux/module.h>
 111 #include <linux/kernel.h>
 112 #include <linux/errno.h>
 113 #include <linux/string.h>
 114 #include <linux/mm.h>
 115 #include <linux/slab.h>
 116 #include <linux/delay.h>
 117 #include <linux/fb.h>
 118 #include <linux/ioport.h>
 119 #include <linux/init.h>
 120 #include <linux/pci.h>
 121 #include <linux/vmalloc.h>
 122 #include <linux/pagemap.h>
 123 #include <linux/screen_info.h>
 124
 125 #include <asm/io.h>
 126
 127 #ifdef CONFIG_MTRR
 128 #include <asm/mtrr.h>
 129 #endif
 130
 131 #include "intelfb.h"
 132 #include "intelfbhw.h"
 133 #include "../edid.h"
 134
 135 static void __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_open(struct fb_info *info, int user);
 139 static int intelfb_release(struct fb_info *info, int user);
 140 static int intelfb_check_var(struct fb_var_screeninfo *var,
 141                              struct fb_info *info);
 142 static int intelfb_set_par(struct fb_info *info);
 143 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 144                              unsigned blue, unsigned transp,
 145                              struct fb_info *info);
 146
 147 static int intelfb_blank(int blank, struct fb_info *info);
 148 static int intelfb_pan_display(struct fb_var_screeninfo *var,
 149                                struct fb_info *info);
 150
 151 static void intelfb_fillrect(struct fb_info *info,
 152                              const struct fb_fillrect *rect);
 153 static void intelfb_copyarea(struct fb_info *info,
 154                              const struct fb_copyarea *region);
 155 static void intelfb_imageblit(struct fb_info *info,
 156                               const struct fb_image *image);
 157 static int intelfb_cursor(struct fb_info *info,
 158                            struct fb_cursor *cursor);
 159
 160 static int intelfb_sync(struct fb_info *info);
 161
 162 static int intelfb_ioctl(struct fb_info *info,
 163                          unsigned int cmd, unsigned long arg);
 164
 165 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
 166                                           const struct pci_device_id *ent);
 167 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
 168 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
 169
 170 /*
 171  * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
 172  * mobile chipsets from being registered.
 173  */
 174 #if DETECT_VGA_CLASS_ONLY
 175 #define INTELFB_CLASS_MASK ~0 << 8
 176 #else
 177 #define INTELFB_CLASS_MASK 0
 178 #endif
 179
 180 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
 181         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_830M, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_830M },
 182         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_845G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_845G },
 183         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_85XGM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_85XGM },
 184         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_865G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_865G },
 185         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915G },
 186         { 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 },
 187         { 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 },
 188         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GM },
 189         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GME, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GME },
 190         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_965G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965G },
 191         { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_965GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965GM },
 192         { 0, }
 193 };
 194
 195 /* Global data */
 196 static int num_registered = 0;
 197
 198 /* fb ops */
 199 static struct fb_ops intel_fb_ops = {
 200         .owner =                THIS_MODULE,
 201         .fb_open =              intelfb_open,
 202         .fb_release =           intelfb_release,
 203         .fb_check_var =         intelfb_check_var,
 204         .fb_set_par =           intelfb_set_par,
 205         .fb_setcolreg =         intelfb_setcolreg,
 206         .fb_blank =             intelfb_blank,
 207         .fb_pan_display =       intelfb_pan_display,
 208         .fb_fillrect  =         intelfb_fillrect,
 209         .fb_copyarea  =         intelfb_copyarea,
 210         .fb_imageblit =         intelfb_imageblit,
 211         .fb_cursor =            intelfb_cursor,
 212         .fb_sync =              intelfb_sync,
 213         .fb_ioctl =             intelfb_ioctl
 214 };
 215
 216 /* PCI driver module table */
 217 static struct pci_driver intelfb_driver = {
 218         .name =         "intelfb",
 219         .id_table =     intelfb_pci_table,
 220         .probe =        intelfb_pci_register,
 221         .remove =       __devexit_p(intelfb_pci_unregister)
 222 };
 223
 224 /* Module description/parameters */
 225 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
 226               "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
 227 MODULE_DESCRIPTION("Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS
 228                    " chipsets");
 229 MODULE_LICENSE("Dual BSD/GPL");
 230 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
 231
 232 static int accel        = 1;
 233 static int vram         = 4;
 234 static int hwcursor     = 0;
 235 static int mtrr         = 1;
 236 static int fixed        = 0;
 237 static int noinit       = 0;
 238 static int noregister   = 0;
 239 static int probeonly    = 0;
 240 static int idonly       = 0;
 241 static int bailearly    = 0;
 242 static int voffset      = 48;
 243 static char *mode       = NULL;
 244
 245 module_param(accel, bool, S_IRUGO);
 246 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
 247 module_param(vram, int, S_IRUGO);
 248 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
 249 module_param(voffset, int, S_IRUGO);
 250 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
 251 module_param(hwcursor, bool, S_IRUGO);
 252 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
 253 module_param(mtrr, bool, S_IRUGO);
 254 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
 255 module_param(fixed, bool, S_IRUGO);
 256 MODULE_PARM_DESC(fixed, "Disable mode switching");
 257 module_param(noinit, bool, 0);
 258 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
 259 module_param(noregister, bool, 0);
 260 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
 261 module_param(probeonly, bool, 0);
 262 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
 263 module_param(idonly, bool, 0);
 264 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
 265 module_param(bailearly, bool, 0);
 266 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
 267 module_param(mode, charp, S_IRUGO);
 268 MODULE_PARM_DESC(mode,
 269                  "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
 270
 271 #ifndef MODULE
 272 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
 273 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
 274 #define OPT_STRVAL(opt, name) (opt + strlen(name))
 275
 276 static __inline__ char * get_opt_string(const char *this_opt, const char *name)
 277 {
 278         const char *p;
 279         int i;
 280         char *ret;
 281
 282         p = OPT_STRVAL(this_opt, name);
 283         i = 0;
 284         while (p[i] && p[i] != ' ' && p[i] != ',')
 285                 i++;
 286         ret = kmalloc(i + 1, GFP_KERNEL);
 287         if (ret) {
 288                 strncpy(ret, p, i);
 289                 ret[i] = '\0';
 290         }
 291         return ret;
 292 }
 293
 294 static __inline__ int get_opt_int(const char *this_opt, const char *name,
 295                                   int *ret)
 296 {
 297         if (!ret)
 298                 return 0;
 299
 300         if (!OPT_EQUAL(this_opt, name))
 301                 return 0;
 302
 303         *ret = OPT_INTVAL(this_opt, name);
 304         return 1;
 305 }
 306
 307 static __inline__ int get_opt_bool(const char *this_opt, const char *name,
 308                                    int *ret)
 309 {
 310         if (!ret)
 311                 return 0;
 312
 313         if (OPT_EQUAL(this_opt, name)) {
 314                 if (this_opt[strlen(name)] == '=')
 315                         *ret = simple_strtoul(this_opt + strlen(name) + 1,
 316                                               NULL, 0);
 317                 else
 318                         *ret = 1;
 319         } else {
 320                 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
 321                         *ret = 0;
 322                 else
 323                         return 0;
 324         }
 325         return 1;
 326 }
 327
 328 static int __init intelfb_setup(char *options)
 329 {
 330         char *this_opt;
 331
 332         DBG_MSG("intelfb_setup\n");
 333
 334         if (!options || !*options) {
 335                 DBG_MSG("no options\n");
 336                 return 0;
 337         } else
 338                 DBG_MSG("options: %s\n", options);
 339
 340         /*
 341          * These are the built-in options analogous to the module parameters
 342          * defined above.
 343          *
 344          * The syntax is:
 345          *
 346          *    video=intelfb:[mode][,<param>=<val>] ...
 347          *
 348          * e.g.,
 349          *
 350          *    video=intelfb:1024x768-16@75,accel=0
 351          */
 352
 353         while ((this_opt = strsep(&options, ","))) {
 354                 if (!*this_opt)
 355                         continue;
 356                 if (get_opt_bool(this_opt, "accel", &accel))
 357                         ;
 358                 else if (get_opt_int(this_opt, "vram", &vram))
 359                         ;
 360                 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
 361                         ;
 362                 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
 363                         ;
 364                 else if (get_opt_bool(this_opt, "fixed", &fixed))
 365                         ;
 366                 else if (get_opt_bool(this_opt, "init", &noinit))
 367                         noinit = !noinit;
 368                 else if (OPT_EQUAL(this_opt, "mode="))
 369                         mode = get_opt_string(this_opt, "mode=");
 370                 else
 371                         mode = this_opt;
 372         }
 373
 374         return 0;
 375 }
 376
 377 #endif
 378
 379 static int __init intelfb_init(void)
 380 {
 381 #ifndef MODULE
 382         char *option = NULL;
 383 #endif
 384
 385         DBG_MSG("intelfb_init\n");
 386
 387         INF_MSG("Framebuffer driver for "
 388                 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
 389         INF_MSG("Version " INTELFB_VERSION "\n");
 390
 391         if (idonly)
 392                 return -ENODEV;
 393
 394 #ifndef MODULE
 395         if (fb_get_options("intelfb", &option))
 396                 return -ENODEV;
 397         intelfb_setup(option);
 398 #endif
 399
 400         return pci_register_driver(&intelfb_driver);
 401 }
 402
 403 static void __exit intelfb_exit(void)
 404 {
 405         DBG_MSG("intelfb_exit\n");
 406         pci_unregister_driver(&intelfb_driver);
 407 }
 408
 409 module_init(intelfb_init);
 410 module_exit(intelfb_exit);
 411
 412 /***************************************************************
 413  *                     mtrr support functions                  *
 414  ***************************************************************/
 415
 416 #ifdef CONFIG_MTRR
 417 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
 418 {
 419         dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
 420                                    dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
 421         if (dinfo->mtrr_reg < 0) {
 422                 ERR_MSG("unable to set MTRR\n");
 423                 return;
 424         }
 425         dinfo->has_mtrr = 1;
 426 }
 427 static inline void unset_mtrr(struct intelfb_info *dinfo)
 428 {
 429         if (dinfo->has_mtrr)
 430                 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
 431                          dinfo->aperture.size);
 432 }
 433 #else
 434 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
 435
 436 #define unset_mtrr(x) do { } while (0)
 437 #endif /* CONFIG_MTRR */
 438
 439 /***************************************************************
 440  *                        driver init / cleanup                *
 441  ***************************************************************/
 442
 443 static void cleanup(struct intelfb_info *dinfo)
 444 {
 445         DBG_MSG("cleanup\n");
 446
 447         if (!dinfo)
 448                 return;
 449
 450         intelfbhw_disable_irq(dinfo);
 451
 452         fb_dealloc_cmap(&dinfo->info->cmap);
 453         kfree(dinfo->info->pixmap.addr);
 454
 455         if (dinfo->registered)
 456                 unregister_framebuffer(dinfo->info);
 457
 458         unset_mtrr(dinfo);
 459
 460         if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
 461                 agp_unbind_memory(dinfo->gtt_fb_mem);
 462                 agp_free_memory(dinfo->gtt_fb_mem);
 463         }
 464         if (dinfo->gtt_cursor_mem) {
 465                 agp_unbind_memory(dinfo->gtt_cursor_mem);
 466                 agp_free_memory(dinfo->gtt_cursor_mem);
 467         }
 468         if (dinfo->gtt_ring_mem) {
 469                 agp_unbind_memory(dinfo->gtt_ring_mem);
 470                 agp_free_memory(dinfo->gtt_ring_mem);
 471         }
 472
 473 #ifdef CONFIG_FB_INTEL_I2C
 474         /* un-register I2C bus */
 475         intelfb_delete_i2c_busses(dinfo);
 476 #endif
 477
 478         if (dinfo->mmio_base)
 479                 iounmap((void __iomem *)dinfo->mmio_base);
 480         if (dinfo->aperture.virtual)
 481                 iounmap((void __iomem *)dinfo->aperture.virtual);
 482
 483         if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
 484                 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
 485         if (dinfo->flag & INTELFB_FB_ACQUIRED)
 486                 release_mem_region(dinfo->aperture.physical,
 487                                    dinfo->aperture.size);
 488         framebuffer_release(dinfo->info);
 489 }
 490
 491 #define bailout(dinfo) do {                                             \
 492         DBG_MSG("bailout\n");                                           \
 493         cleanup(dinfo);                                                 \
 494         INF_MSG("Not going to register framebuffer, exiting...\n");     \
 495         return -ENODEV;                                                 \
 496 } while (0)
 497
 498
 499 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
 500                                           const struct pci_device_id *ent)
 501 {
 502         struct fb_info *info;
 503         struct intelfb_info *dinfo;
 504         int i, err, dvo;
 505         int aperture_size, stolen_size;
 506         struct agp_kern_info gtt_info;
 507         int agp_memtype;
 508         const char *s;
 509         struct agp_bridge_data *bridge;
 510         int aperture_bar = 0;
 511         int mmio_bar = 1;
 512         int offset;
 513
 514         DBG_MSG("intelfb_pci_register\n");
 515
 516         num_registered++;
 517         if (num_registered != 1) {
 518                 ERR_MSG("Attempted to register %d devices "
 519                         "(should be only 1).\n", num_registered);
 520                 return -ENODEV;
 521         }
 522
 523         info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
 524         if (!info) {
 525                 ERR_MSG("Could not allocate memory for intelfb_info.\n");
 526                 return -ENODEV;
 527         }
 528         if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
 529                 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
 530                 goto err_out_cmap;
 531                 return -ENODEV;
 532         }
 533
 534         dinfo = info->par;
 535         dinfo->info  = info;
 536         dinfo->fbops = &intel_fb_ops;
 537         dinfo->pdev  = pdev;
 538
 539         /* Reserve pixmap space. */
 540         info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
 541         if (info->pixmap.addr == NULL) {
 542                 ERR_MSG("Cannot reserve pixmap memory.\n");
 543                 goto err_out_pixmap;
 544         }
 545
 546         /* set early this option because it could be changed by tv encoder
 547            driver */
 548         dinfo->fixed_mode = fixed;
 549
 550         /* Enable device. */
 551         if ((err = pci_enable_device(pdev))) {
 552                 ERR_MSG("Cannot enable device.\n");
 553                 cleanup(dinfo);
 554                 return -ENODEV;
 555         }
 556
 557         /* Set base addresses. */
 558         if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
 559             (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
 560             (ent->device == PCI_DEVICE_ID_INTEL_945G)  ||
 561             (ent->device == PCI_DEVICE_ID_INTEL_945GM) ||
 562             (ent->device == PCI_DEVICE_ID_INTEL_945GME) ||
 563             (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
 564             (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
 565
 566                 aperture_bar = 2;
 567                 mmio_bar = 0;
 568         }
 569         dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
 570         dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
 571         dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
 572         DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
 573                 (unsigned long long)pci_resource_start(pdev, aperture_bar),
 574                 (unsigned long long)pci_resource_len(pdev, aperture_bar),
 575                 (unsigned long long)pci_resource_start(pdev, mmio_bar),
 576                 (unsigned long long)pci_resource_len(pdev, mmio_bar));
 577
 578         /* Reserve the fb and MMIO regions */
 579         if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
 580                                 INTELFB_MODULE_NAME)) {
 581                 ERR_MSG("Cannot reserve FB region.\n");
 582                 cleanup(dinfo);
 583                 return -ENODEV;
 584         }
 585
 586         dinfo->flag |= INTELFB_FB_ACQUIRED;
 587
 588         if (!request_mem_region(dinfo->mmio_base_phys,
 589                                 INTEL_REG_SIZE,
 590                                 INTELFB_MODULE_NAME)) {
 591                 ERR_MSG("Cannot reserve MMIO region.\n");
 592                 cleanup(dinfo);
 593                 return -ENODEV;
 594         }
 595
 596         dinfo->flag |= INTELFB_MMIO_ACQUIRED;
 597
 598         /* Get the chipset info. */
 599         dinfo->pci_chipset = pdev->device;
 600
 601         if (intelfbhw_get_chipset(pdev, dinfo)) {
 602                 cleanup(dinfo);
 603                 return -ENODEV;
 604         }
 605
 606         if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
 607                 cleanup(dinfo);
 608                 return -ENODEV;
 609         }
 610
 611         INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
 612                 "stolen memory %dkB\n",
 613                 pdev->bus->number, PCI_SLOT(pdev->devfn),
 614                 PCI_FUNC(pdev->devfn), dinfo->name,
 615                 BtoMB(aperture_size), BtoKB(stolen_size));
 616
 617         /* Set these from the options. */
 618         dinfo->accel    = accel;
 619         dinfo->hwcursor = hwcursor;
 620
 621         if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
 622                 INF_MSG("Acceleration is not supported for the %s chipset.\n",
 623                         dinfo->name);
 624                 dinfo->accel = 0;
 625         }
 626
 627         /* Framebuffer parameters - Use all the stolen memory if >= vram */
 628         if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
 629                 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
 630                 dinfo->fbmem_gart = 0;
 631         } else {
 632                 dinfo->fb.size =  MB(vram);
 633                 dinfo->fbmem_gart = 1;
 634         }
 635
 636         /* Allocate space for the ring buffer and HW cursor if enabled. */
 637         if (dinfo->accel) {
 638                 dinfo->ring.size = RINGBUFFER_SIZE;
 639                 dinfo->ring_tail_mask = dinfo->ring.size - 1;
 640         }
 641         if (dinfo->hwcursor)
 642                 dinfo->cursor.size = HW_CURSOR_SIZE;
 643
 644         /* Use agpgart to manage the GATT */
 645         if (!(bridge = agp_backend_acquire(pdev))) {
 646                 ERR_MSG("cannot acquire agp\n");
 647                 cleanup(dinfo);
 648                 return -ENODEV;
 649         }
 650
 651         /* get the current gatt info */
 652         if (agp_copy_info(bridge, &gtt_info)) {
 653                 ERR_MSG("cannot get agp info\n");
 654                 agp_backend_release(bridge);
 655                 cleanup(dinfo);
 656                 return -ENODEV;
 657         }
 658
 659         if (MB(voffset) < stolen_size)
 660                 offset = (stolen_size >> 12);
 661         else
 662                 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
 663
 664         /* set the mem offsets - set them after the already used pages */
 665         if (dinfo->accel)
 666                 dinfo->ring.offset = offset + gtt_info.current_memory;
 667         if (dinfo->hwcursor)
 668                 dinfo->cursor.offset = offset +
 669                         + gtt_info.current_memory + (dinfo->ring.size >> 12);
 670         if (dinfo->fbmem_gart)
 671                 dinfo->fb.offset = offset +
 672                         + gtt_info.current_memory + (dinfo->ring.size >> 12)
 673                         + (dinfo->cursor.size >> 12);
 674
 675         /* Allocate memories (which aren't stolen) */
 676         /* Map the fb and MMIO regions */
 677         /* ioremap only up to the end of used aperture */
 678         dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
 679                 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
 680                  + dinfo->fb.size);
 681         if (!dinfo->aperture.virtual) {
 682                 ERR_MSG("Cannot remap FB region.\n");
 683                 cleanup(dinfo);
 684                 return -ENODEV;
 685         }
 686
 687         dinfo->mmio_base =
 688                 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
 689                                               INTEL_REG_SIZE);
 690         if (!dinfo->mmio_base) {
 691                 ERR_MSG("Cannot remap MMIO region.\n");
 692                 cleanup(dinfo);
 693                 return -ENODEV;
 694         }
 695
 696         if (dinfo->accel) {
 697                 if (!(dinfo->gtt_ring_mem =
 698                       agp_allocate_memory(bridge, dinfo->ring.size >> 12,
 699                                           AGP_NORMAL_MEMORY))) {
 700                         ERR_MSG("cannot allocate ring buffer memory\n");
 701                         agp_backend_release(bridge);
 702                         cleanup(dinfo);
 703                         return -ENOMEM;
 704                 }
 705                 if (agp_bind_memory(dinfo->gtt_ring_mem,
 706                                     dinfo->ring.offset)) {
 707                         ERR_MSG("cannot bind ring buffer memory\n");
 708                         agp_backend_release(bridge);
 709                         cleanup(dinfo);
 710                         return -EBUSY;
 711                 }
 712                 dinfo->ring.physical = dinfo->aperture.physical
 713                         + (dinfo->ring.offset << 12);
 714                 dinfo->ring.virtual  = dinfo->aperture.virtual
 715                         + (dinfo->ring.offset << 12);
 716                 dinfo->ring_head = 0;
 717         }
 718         if (dinfo->hwcursor) {
 719                 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
 720                         : AGP_NORMAL_MEMORY;
 721                 if (!(dinfo->gtt_cursor_mem =
 722                       agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
 723                                           agp_memtype))) {
 724                         ERR_MSG("cannot allocate cursor memory\n");
 725                         agp_backend_release(bridge);
 726                         cleanup(dinfo);
 727                         return -ENOMEM;
 728                 }
 729                 if (agp_bind_memory(dinfo->gtt_cursor_mem,
 730                                     dinfo->cursor.offset)) {
 731                         ERR_MSG("cannot bind cursor memory\n");
 732                         agp_backend_release(bridge);
 733                         cleanup(dinfo);
 734                         return -EBUSY;
 735                 }
 736                 if (dinfo->mobile)
 737                         dinfo->cursor.physical
 738                                 = dinfo->gtt_cursor_mem->physical;
 739                 else
 740                         dinfo->cursor.physical = dinfo->aperture.physical
 741                                 + (dinfo->cursor.offset << 12);
 742                 dinfo->cursor.virtual = dinfo->aperture.virtual
 743                         + (dinfo->cursor.offset << 12);
 744         }
 745         if (dinfo->fbmem_gart) {
 746                 if (!(dinfo->gtt_fb_mem =
 747                       agp_allocate_memory(bridge, dinfo->fb.size >> 12,
 748                                           AGP_NORMAL_MEMORY))) {
 749                         WRN_MSG("cannot allocate framebuffer memory - use "
 750                                 "the stolen one\n");
 751                         dinfo->fbmem_gart = 0;
 752                 }
 753                 if (agp_bind_memory(dinfo->gtt_fb_mem,
 754                                     dinfo->fb.offset)) {
 755                         WRN_MSG("cannot bind framebuffer memory - use "
 756                                 "the stolen one\n");
 757                         dinfo->fbmem_gart = 0;
 758                 }
 759         }
 760
 761         /* update framebuffer memory parameters */
 762         if (!dinfo->fbmem_gart)
 763                 dinfo->fb.offset = 0;   /* starts at offset 0 */
 764         dinfo->fb.physical = dinfo->aperture.physical
 765                 + (dinfo->fb.offset << 12);
 766         dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
 767         dinfo->fb_start = dinfo->fb.offset << 12;
 768
 769         /* release agpgart */
 770         agp_backend_release(bridge);
 771
 772         if (mtrr)
 773                 set_mtrr(dinfo);
 774
 775         DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
 776                 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
 777                 dinfo->fb.virtual);
 778         DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
 779                 dinfo->mmio_base_phys, INTEL_REG_SIZE,
 780                 dinfo->mmio_base);
 781         DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
 782                 dinfo->ring.physical, dinfo->ring.size,
 783                 dinfo->ring.virtual);
 784         DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
 785                 dinfo->cursor.physical, dinfo->cursor.size,
 786                 dinfo->cursor.virtual, dinfo->cursor.offset,
 787                 dinfo->cursor.physical);
 788
 789         DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
 790                 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
 791         DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
 792
 793         if (probeonly)
 794                 bailout(dinfo);
 795
 796         /*
 797          * Check if the LVDS port or any DVO ports are enabled.  If so,
 798          * don't allow mode switching
 799          */
 800         dvo = intelfbhw_check_non_crt(dinfo);
 801         if (dvo) {
 802                 dinfo->fixed_mode = 1;
 803                 WRN_MSG("Non-CRT device is enabled ( ");
 804                 i = 0;
 805                 while (dvo) {
 806                         if (dvo & 1) {
 807                                 s = intelfbhw_dvo_to_string(1 << i);
 808                                 if (s)
 809                                         printk("%s ", s);
 810                         }
 811                         dvo >>= 1;
 812                         ++i;
 813                 }
 814                 printk(").  Disabling mode switching.\n");
 815         }
 816
 817         if (bailearly == 1)
 818                 bailout(dinfo);
 819
 820         if (FIXED_MODE(dinfo) &&
 821             screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
 822                 ERR_MSG("Video mode must be programmed at boot time.\n");
 823                 cleanup(dinfo);
 824                 return -ENODEV;
 825         }
 826
 827         if (bailearly == 2)
 828                 bailout(dinfo);
 829
 830         /* Initialise dinfo and related data. */
 831         /* If an initial mode was programmed at boot time, get its details. */
 832         if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
 833                 get_initial_mode(dinfo);
 834
 835         if (bailearly == 3)
 836                 bailout(dinfo);
 837
 838         if (FIXED_MODE(dinfo))  /* remap fb address */
 839                 update_dinfo(dinfo, &dinfo->initial_var);
 840
 841         if (bailearly == 4)
 842                 bailout(dinfo);
 843
 844
 845         if (intelfb_set_fbinfo(dinfo)) {
 846                 cleanup(dinfo);
 847                 return -ENODEV;
 848         }
 849
 850         if (bailearly == 5)
 851                 bailout(dinfo);
 852
 853 #ifdef CONFIG_FB_INTEL_I2C
 854         /* register I2C bus */
 855         intelfb_create_i2c_busses(dinfo);
 856 #endif
 857
 858         if (bailearly == 6)
 859                 bailout(dinfo);
 860
 861         pci_set_drvdata(pdev, dinfo);
 862
 863         /* Save the initial register state. */
 864         i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
 865                                     bailearly > 6 ? bailearly - 6 : 0);
 866         if (i != 0) {
 867                 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
 868                 bailout(dinfo);
 869         }
 870
 871         intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
 872
 873         if (bailearly == 18)
 874                 bailout(dinfo);
 875
 876         /* Cursor initialisation */
 877         if (dinfo->hwcursor) {
 878                 intelfbhw_cursor_init(dinfo);
 879                 intelfbhw_cursor_reset(dinfo);
 880         }
 881
 882         if (bailearly == 19)
 883                 bailout(dinfo);
 884
 885         /* 2d acceleration init */
 886         if (dinfo->accel)
 887                 intelfbhw_2d_start(dinfo);
 888
 889         if (bailearly == 20)
 890                 bailout(dinfo);
 891
 892         if (noregister)
 893                 bailout(dinfo);
 894
 895         if (register_framebuffer(dinfo->info) < 0) {
 896                 ERR_MSG("Cannot register framebuffer.\n");
 897                 cleanup(dinfo);
 898                 return -ENODEV;
 899         }
 900
 901         dinfo->registered = 1;
 902         dinfo->open = 0;
 903
 904         init_waitqueue_head(&dinfo->vsync.wait);
 905         spin_lock_init(&dinfo->int_lock);
 906         dinfo->irq_flags = 0;
 907         dinfo->vsync.pan_display = 0;
 908         dinfo->vsync.pan_offset = 0;
 909
 910         return 0;
 911
 912 err_out_pixmap:
 913         fb_dealloc_cmap(&info->cmap);
 914 err_out_cmap:
 915         framebuffer_release(info);
 916         return -ENODEV;
 917 }
 918
 919 static void __devexit
 920 intelfb_pci_unregister(struct pci_dev *pdev)
 921 {
 922         struct intelfb_info *dinfo = pci_get_drvdata(pdev);
 923
 924         DBG_MSG("intelfb_pci_unregister\n");
 925
 926         if (!dinfo)
 927                 return;
 928
 929         cleanup(dinfo);
 930
 931         pci_set_drvdata(pdev, NULL);
 932 }
 933
 934 /***************************************************************
 935  *                       helper functions                      *
 936  ***************************************************************/
 937
 938 int __inline__ intelfb_var_to_depth(const struct fb_var_screeninfo *var)
 939 {
 940         DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
 941                 var->bits_per_pixel, var->green.length);
 942
 943         switch (var->bits_per_pixel) {
 944         case 16:
 945                 return (var->green.length == 6) ? 16 : 15;
 946         case 32:
 947                 return 24;
 948         default:
 949                 return var->bits_per_pixel;
 950         }
 951 }
 952
 953
 954 static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
 955 {
 956         int xtot = var->xres + var->left_margin + var->right_margin +
 957                    var->hsync_len;
 958         int ytot = var->yres + var->upper_margin + var->lower_margin +
 959                    var->vsync_len;
 960
 961         return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
 962 }
 963
 964 /***************************************************************
 965  *                Various intialisation functions              *
 966  ***************************************************************/
 967
 968 static void __devinit get_initial_mode(struct intelfb_info *dinfo)
 969 {
 970         struct fb_var_screeninfo *var;
 971         int xtot, ytot;
 972
 973         DBG_MSG("get_initial_mode\n");
 974
 975         dinfo->initial_vga = 1;
 976         dinfo->initial_fb_base = screen_info.lfb_base;
 977         dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
 978         dinfo->initial_pitch = screen_info.lfb_linelength;
 979
 980         var = &dinfo->initial_var;
 981         memset(var, 0, sizeof(*var));
 982         var->xres = screen_info.lfb_width;
 983         var->yres = screen_info.lfb_height;
 984         var->bits_per_pixel = screen_info.lfb_depth;
 985         switch (screen_info.lfb_depth) {
 986         case 15:
 987                 var->bits_per_pixel = 16;
 988                 break;
 989         case 24:
 990                 var->bits_per_pixel = 32;
 991                 break;
 992         }
 993
 994         DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
 995                 dinfo->initial_fb_base, dinfo->initial_video_ram,
 996                 BtoKB(dinfo->initial_video_ram));
 997
 998         DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
 999                 var->xres, var->yres, var->bits_per_pixel,
1000                 dinfo->initial_pitch);
1001
1002         /* Dummy timing values (assume 60Hz) */
1003         var->left_margin = (var->xres / 8) & 0xf8;
1004         var->right_margin = 32;
1005         var->upper_margin = 16;
1006         var->lower_margin = 4;
1007         var->hsync_len = (var->xres / 8) & 0xf8;
1008         var->vsync_len = 4;
1009
1010         xtot = var->xres + var->left_margin +
1011                 var->right_margin + var->hsync_len;
1012         ytot = var->yres + var->upper_margin +
1013                 var->lower_margin + var->vsync_len;
1014         var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1015
1016         var->height = -1;
1017         var->width = -1;
1018
1019         if (var->bits_per_pixel > 8) {
1020                 var->red.offset = screen_info.red_pos;
1021                 var->red.length = screen_info.red_size;
1022                 var->green.offset = screen_info.green_pos;
1023                 var->green.length = screen_info.green_size;
1024                 var->blue.offset = screen_info.blue_pos;
1025                 var->blue.length = screen_info.blue_size;
1026                 var->transp.offset = screen_info.rsvd_pos;
1027                 var->transp.length = screen_info.rsvd_size;
1028         } else {
1029                 var->red.length = 8;
1030                 var->green.length = 8;
1031                 var->blue.length = 8;
1032         }
1033 }
1034
1035 static int __devinit intelfb_init_var(struct intelfb_info *dinfo)
1036 {
1037         struct fb_var_screeninfo *var;
1038         int msrc = 0;
1039
1040         DBG_MSG("intelfb_init_var\n");
1041
1042         var = &dinfo->info->var;
1043         if (FIXED_MODE(dinfo)) {
1044                 memcpy(var, &dinfo->initial_var,
1045                        sizeof(struct fb_var_screeninfo));
1046                 msrc = 5;
1047         } else {
1048                 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1049                 u8 *edid_d = NULL;
1050
1051                 if (edid_s) {
1052                         edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1053
1054                         if (edid_d) {
1055                                 fb_edid_to_monspecs(edid_d,
1056                                                     &dinfo->info->monspecs);
1057                                 kfree(edid_d);
1058                         }
1059                 }
1060
1061                 if (mode) {
1062                         printk("intelfb: Looking for mode in private "
1063                                "database\n");
1064                         msrc = fb_find_mode(var, dinfo->info, mode,
1065                                             dinfo->info->monspecs.modedb,
1066                                             dinfo->info->monspecs.modedb_len,
1067                                             NULL, 0);
1068
1069                         if (msrc && msrc > 1) {
1070                                 printk("intelfb: No mode in private database, "
1071                                        "intelfb: looking for mode in global "
1072                                        "database ");
1073                                 msrc = fb_find_mode(var, dinfo->info, mode,
1074                                                     NULL, 0, NULL, 0);
1075
1076                                 if (msrc)
1077                                         msrc |= 8;
1078                         }
1079
1080                 }
1081
1082                 if (!msrc)
1083                         msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1084                                             NULL, 0, NULL, 0);
1085         }
1086
1087         if (!msrc) {
1088                 ERR_MSG("Cannot find a suitable video mode.\n");
1089                 return 1;
1090         }
1091
1092         INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1093                 var->bits_per_pixel, var_to_refresh(var));
1094
1095         DBG_MSG("Initial video mode is from %d.\n", msrc);
1096
1097 #if ALLOCATE_FOR_PANNING
1098         /* Allow use of half of the video ram for panning */
1099         var->xres_virtual = var->xres;
1100         var->yres_virtual =
1101                 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1102         if (var->yres_virtual < var->yres)
1103                 var->yres_virtual = var->yres;
1104 #else
1105         var->yres_virtual = var->yres;
1106 #endif
1107
1108         if (dinfo->accel)
1109                 var->accel_flags |= FB_ACCELF_TEXT;
1110         else
1111                 var->accel_flags &= ~FB_ACCELF_TEXT;
1112
1113         return 0;
1114 }
1115
1116 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo)
1117 {
1118         struct fb_info *info = dinfo->info;
1119
1120         DBG_MSG("intelfb_set_fbinfo\n");
1121
1122         info->flags = FBINFO_FLAG_DEFAULT;
1123         info->fbops = &intel_fb_ops;
1124         info->pseudo_palette = dinfo->pseudo_palette;
1125
1126         info->pixmap.size = 64*1024;
1127         info->pixmap.buf_align = 8;
1128         info->pixmap.access_align = 32;
1129         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1130
1131         if (intelfb_init_var(dinfo))
1132                 return 1;
1133
1134         info->pixmap.scan_align = 1;
1135         strcpy(info->fix.id, dinfo->name);
1136         info->fix.smem_start = dinfo->fb.physical;
1137         info->fix.smem_len = dinfo->fb.size;
1138         info->fix.type = FB_TYPE_PACKED_PIXELS;
1139         info->fix.type_aux = 0;
1140         info->fix.xpanstep = 8;
1141         info->fix.ypanstep = 1;
1142         info->fix.ywrapstep = 0;
1143         info->fix.mmio_start = dinfo->mmio_base_phys;
1144         info->fix.mmio_len = INTEL_REG_SIZE;
1145         info->fix.accel = FB_ACCEL_I830;
1146         update_dinfo(dinfo, &info->var);
1147
1148         return 0;
1149 }
1150
1151 /* Update dinfo to match the active video mode. */
1152 static void update_dinfo(struct intelfb_info *dinfo,
1153                          struct fb_var_screeninfo *var)
1154 {
1155         DBG_MSG("update_dinfo\n");
1156
1157         dinfo->bpp = var->bits_per_pixel;
1158         dinfo->depth = intelfb_var_to_depth(var);
1159         dinfo->xres = var->xres;
1160         dinfo->yres = var->xres;
1161         dinfo->pixclock = var->pixclock;
1162
1163         dinfo->info->fix.visual = dinfo->visual;
1164         dinfo->info->fix.line_length = dinfo->pitch;
1165
1166         switch (dinfo->bpp) {
1167         case 8:
1168                 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1169                 dinfo->pitch = var->xres_virtual;
1170                 break;
1171         case 16:
1172                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1173                 dinfo->pitch = var->xres_virtual * 2;
1174                 break;
1175         case 32:
1176                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1177                 dinfo->pitch = var->xres_virtual * 4;
1178                 break;
1179         }
1180
1181         /* Make sure the line length is a aligned correctly. */
1182         if (IS_I9XX(dinfo))
1183                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1184         else
1185                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1186
1187         if (FIXED_MODE(dinfo))
1188                 dinfo->pitch = dinfo->initial_pitch;
1189
1190         dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1191         dinfo->info->fix.line_length = dinfo->pitch;
1192         dinfo->info->fix.visual = dinfo->visual;
1193 }
1194
1195 /* fbops functions */
1196
1197 /***************************************************************
1198  *                       fbdev interface                       *
1199  ***************************************************************/
1200
1201 static int intelfb_open(struct fb_info *info, int user)
1202 {
1203         struct intelfb_info *dinfo = GET_DINFO(info);
1204
1205         if (user)
1206                 dinfo->open++;
1207
1208         return 0;
1209 }
1210
1211 static int intelfb_release(struct fb_info *info, int user)
1212 {
1213         struct intelfb_info *dinfo = GET_DINFO(info);
1214
1215         if (user) {
1216                 dinfo->open--;
1217                 msleep(1);
1218                 if (!dinfo->open)
1219                         intelfbhw_disable_irq(dinfo);
1220         }
1221
1222         return 0;
1223 }
1224
1225 static int intelfb_check_var(struct fb_var_screeninfo *var,
1226                              struct fb_info *info)
1227 {
1228         int change_var = 0;
1229         struct fb_var_screeninfo v;
1230         struct intelfb_info *dinfo;
1231         static int first = 1;
1232         int i;
1233         /* Good pitches to allow tiling.  Don't care about pitches < 1024. */
1234         static const int pitches[] = {
1235                 128 * 8,
1236                 128 * 16,
1237                 128 * 32,
1238                 128 * 64,
1239                 0
1240         };
1241
1242         DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1243
1244         dinfo = GET_DINFO(info);
1245
1246         /* update the pitch */
1247         if (intelfbhw_validate_mode(dinfo, var) != 0)
1248                 return -EINVAL;
1249
1250         v = *var;
1251
1252         for (i = 0; pitches[i] != 0; i++) {
1253                 if (pitches[i] >= v.xres_virtual) {
1254                         v.xres_virtual = pitches[i];
1255                         break;
1256                 }
1257         }
1258
1259         /* Check for a supported bpp. */
1260         if (v.bits_per_pixel <= 8)
1261                 v.bits_per_pixel = 8;
1262         else if (v.bits_per_pixel <= 16) {
1263                 if (v.bits_per_pixel == 16)
1264                         v.green.length = 6;
1265                 v.bits_per_pixel = 16;
1266         } else if (v.bits_per_pixel <= 32)
1267                 v.bits_per_pixel = 32;
1268         else
1269                 return -EINVAL;
1270
1271         change_var = ((info->var.xres != var->xres) ||
1272                       (info->var.yres != var->yres) ||
1273                       (info->var.xres_virtual != var->xres_virtual) ||
1274                       (info->var.yres_virtual != var->yres_virtual) ||
1275                       (info->var.bits_per_pixel != var->bits_per_pixel) ||
1276                       memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1277                       memcmp(&info->var.green, &var->green,
1278                              sizeof(var->green)) ||
1279                       memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1280
1281         if (FIXED_MODE(dinfo) &&
1282             (change_var ||
1283              var->yres_virtual > dinfo->initial_var.yres_virtual ||
1284              var->yres_virtual < dinfo->initial_var.yres ||
1285              var->xoffset || var->nonstd)) {
1286                 if (first) {
1287                         ERR_MSG("Changing the video mode is not supported.\n");
1288                         first = 0;
1289                 }
1290                 return -EINVAL;
1291         }
1292
1293         switch (intelfb_var_to_depth(&v)) {
1294         case 8:
1295                 v.red.offset = v.green.offset = v.blue.offset = 0;
1296                 v.red.length = v.green.length = v.blue.length = 8;
1297                 v.transp.offset = v.transp.length = 0;
1298                 break;
1299         case 15:
1300                 v.red.offset = 10;
1301                 v.green.offset = 5;
1302                 v.blue.offset = 0;
1303                 v.red.length = v.green.length = v.blue.length = 5;
1304                 v.transp.offset = v.transp.length = 0;
1305                 break;
1306         case 16:
1307                 v.red.offset = 11;
1308                 v.green.offset = 5;
1309                 v.blue.offset = 0;
1310                 v.red.length = 5;
1311                 v.green.length = 6;
1312                 v.blue.length = 5;
1313                 v.transp.offset = v.transp.length = 0;
1314                 break;
1315         case 24:
1316                 v.red.offset = 16;
1317                 v.green.offset = 8;
1318                 v.blue.offset = 0;
1319                 v.red.length = v.green.length = v.blue.length = 8;
1320                 v.transp.offset = v.transp.length = 0;
1321                 break;
1322         case 32:
1323                 v.red.offset = 16;
1324                 v.green.offset = 8;
1325                 v.blue.offset = 0;
1326                 v.red.length = v.green.length = v.blue.length = 8;
1327                 v.transp.offset = 24;
1328                 v.transp.length = 8;
1329                 break;
1330         }
1331
1332         if (v.xoffset < 0)
1333                 v.xoffset = 0;
1334         if (v.yoffset < 0)
1335                 v.yoffset = 0;
1336
1337         if (v.xoffset > v.xres_virtual - v.xres)
1338                 v.xoffset = v.xres_virtual - v.xres;
1339         if (v.yoffset > v.yres_virtual - v.yres)
1340                 v.yoffset = v.yres_virtual - v.yres;
1341
1342         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1343                           v.transp.msb_right = 0;
1344
1345         *var = v;
1346
1347         return 0;
1348 }
1349
1350 static int intelfb_set_par(struct fb_info *info)
1351 {
1352         struct intelfb_hwstate *hw;
1353         struct intelfb_info *dinfo = GET_DINFO(info);
1354
1355         if (FIXED_MODE(dinfo)) {
1356                 ERR_MSG("Changing the video mode is not supported.\n");
1357                 return -EINVAL;
1358         }
1359
1360         hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1361         if (!hw)
1362                 return -ENOMEM;
1363
1364         DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1365                 info->var.yres, info->var.bits_per_pixel);
1366
1367         intelfb_blank(FB_BLANK_POWERDOWN, info);
1368
1369         if (ACCEL(dinfo, info))
1370                 intelfbhw_2d_stop(dinfo);
1371
1372         memcpy(hw, &dinfo->save_state, sizeof(*hw));
1373         if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1374                 goto invalid_mode;
1375         if (intelfbhw_program_mode(dinfo, hw, 0))
1376                 goto invalid_mode;
1377
1378 #if REGDUMP > 0
1379         intelfbhw_read_hw_state(dinfo, hw, 0);
1380         intelfbhw_print_hw_state(dinfo, hw);
1381 #endif
1382
1383         update_dinfo(dinfo, &info->var);
1384
1385         if (ACCEL(dinfo, info))
1386                 intelfbhw_2d_start(dinfo);
1387
1388         intelfb_pan_display(&info->var, info);
1389
1390         intelfb_blank(FB_BLANK_UNBLANK, info);
1391
1392         if (ACCEL(dinfo, info)) {
1393                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1394                 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1395                 FBINFO_HWACCEL_IMAGEBLIT;
1396         } else
1397                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1398
1399         kfree(hw);
1400         return 0;
1401 invalid_mode:
1402         kfree(hw);
1403         return -EINVAL;
1404 }
1405
1406 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1407                              unsigned blue, unsigned transp,
1408                              struct fb_info *info)
1409 {
1410         struct intelfb_info *dinfo = GET_DINFO(info);
1411
1412 #if VERBOSE > 0
1413         DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1414 #endif
1415
1416         if (regno > 255)
1417                 return 1;
1418
1419         if (dinfo->depth == 8) {
1420                 red >>= 8;
1421                 green >>= 8;
1422                 blue >>= 8;
1423
1424                 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1425                                     transp);
1426         }
1427
1428         if (regno < 16) {
1429                 switch (dinfo->depth) {
1430                 case 15:
1431                         dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1432                                 ((green & 0xf800) >>  6) |
1433                                 ((blue & 0xf800) >> 11);
1434                         break;
1435                 case 16:
1436                         dinfo->pseudo_palette[regno] = (red & 0xf800) |
1437                                 ((green & 0xfc00) >>  5) |
1438                                 ((blue  & 0xf800) >> 11);
1439                         break;
1440                 case 24:
1441                         dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1442                                 (green & 0xff00) |
1443                                 ((blue  & 0xff00) >> 8);
1444                         break;
1445                 }
1446         }
1447
1448         return 0;
1449 }
1450
1451 static int intelfb_blank(int blank, struct fb_info *info)
1452 {
1453         intelfbhw_do_blank(blank, info);
1454         return 0;
1455 }
1456
1457 static int intelfb_pan_display(struct fb_var_screeninfo *var,
1458                                struct fb_info *info)
1459 {
1460         intelfbhw_pan_display(var, info);
1461         return 0;
1462 }
1463
1464 /* When/if we have our own ioctls. */
1465 static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1466                          unsigned long arg)
1467 {
1468         int retval = 0;
1469         struct intelfb_info *dinfo = GET_DINFO(info);
1470         u32 pipe = 0;
1471
1472         switch (cmd) {
1473                 case FBIO_WAITFORVSYNC:
1474                         if (get_user(pipe, (__u32 __user *)arg))
1475                                 return -EFAULT;
1476
1477                         retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1478                         break;
1479                 default:
1480                         break;
1481         }
1482
1483         return retval;
1484 }
1485
1486 static void intelfb_fillrect (struct fb_info *info,
1487                               const struct fb_fillrect *rect)
1488 {
1489         struct intelfb_info *dinfo = GET_DINFO(info);
1490         u32 rop, color;
1491
1492 #if VERBOSE > 0
1493         DBG_MSG("intelfb_fillrect\n");
1494 #endif
1495
1496         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1497                 return cfb_fillrect(info, rect);
1498
1499         if (rect->rop == ROP_COPY)
1500                 rop = PAT_ROP_GXCOPY;
1501         else /* ROP_XOR */
1502                 rop = PAT_ROP_GXXOR;
1503
1504         if (dinfo->depth != 8)
1505                 color = dinfo->pseudo_palette[rect->color];
1506         else
1507                 color = rect->color;
1508
1509         intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1510                               rect->width, rect->height, color,
1511                               dinfo->pitch, info->var.bits_per_pixel,
1512                               rop);
1513 }
1514
1515 static void intelfb_copyarea(struct fb_info *info,
1516                              const struct fb_copyarea *region)
1517 {
1518         struct intelfb_info *dinfo = GET_DINFO(info);
1519
1520 #if VERBOSE > 0
1521         DBG_MSG("intelfb_copyarea\n");
1522 #endif
1523
1524         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1525                 return cfb_copyarea(info, region);
1526
1527         intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1528                             region->dy, region->width, region->height,
1529                             dinfo->pitch, info->var.bits_per_pixel);
1530 }
1531
1532 static void intelfb_imageblit(struct fb_info *info,
1533                               const struct fb_image *image)
1534 {
1535         struct intelfb_info *dinfo = GET_DINFO(info);
1536         u32 fgcolor, bgcolor;
1537
1538 #if VERBOSE > 0
1539         DBG_MSG("intelfb_imageblit\n");
1540 #endif
1541
1542         if (!ACCEL(dinfo, info) || dinfo->depth == 4
1543             || image->depth != 1)
1544                 return cfb_imageblit(info, image);
1545
1546         if (dinfo->depth != 8) {
1547                 fgcolor = dinfo->pseudo_palette[image->fg_color];
1548                 bgcolor = dinfo->pseudo_palette[image->bg_color];
1549         } else {
1550                 fgcolor = image->fg_color;
1551                 bgcolor = image->bg_color;
1552         }
1553
1554         if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1555                                     image->height, image->data,
1556                                     image->dx, image->dy,
1557                                     dinfo->pitch, info->var.bits_per_pixel))
1558                 return cfb_imageblit(info, image);
1559 }
1560
1561 static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1562 {
1563         struct intelfb_info *dinfo = GET_DINFO(info);
1564         u32 physical;
1565 #if VERBOSE > 0
1566         DBG_MSG("intelfb_cursor\n");
1567 #endif
1568
1569         if (!dinfo->hwcursor)
1570                 return -ENODEV;
1571
1572         intelfbhw_cursor_hide(dinfo);
1573
1574         /* If XFree killed the cursor - restore it */
1575         physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1576                    (dinfo->cursor.offset << 12);
1577
1578         if (INREG(CURSOR_A_BASEADDR) != physical) {
1579                 u32 fg, bg;
1580
1581                 DBG_MSG("the cursor was killed - restore it !!\n");
1582                 DBG_MSG("size %d, %d   pos %d, %d\n",
1583                         cursor->image.width, cursor->image.height,
1584                         cursor->image.dx, cursor->image.dy);
1585
1586                 intelfbhw_cursor_init(dinfo);
1587                 intelfbhw_cursor_reset(dinfo);
1588                 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1589                                         cursor->image.dy);
1590
1591                 if (dinfo->depth != 8) {
1592                         fg =dinfo->pseudo_palette[cursor->image.fg_color];
1593                         bg =dinfo->pseudo_palette[cursor->image.bg_color];
1594                 } else {
1595                         fg = cursor->image.fg_color;
1596                         bg = cursor->image.bg_color;
1597                 }
1598                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1599                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1600                                       cursor->image.height,
1601                                       dinfo->cursor_src);
1602
1603                 if (cursor->enable)
1604                         intelfbhw_cursor_show(dinfo);
1605                 return 0;
1606         }
1607
1608         if (cursor->set & FB_CUR_SETPOS) {
1609                 u32 dx, dy;
1610
1611                 dx = cursor->image.dx - info->var.xoffset;
1612                 dy = cursor->image.dy - info->var.yoffset;
1613
1614                 intelfbhw_cursor_setpos(dinfo, dx, dy);
1615         }
1616
1617         if (cursor->set & FB_CUR_SETSIZE) {
1618                 if (cursor->image.width > 64 || cursor->image.height > 64)
1619                         return -ENXIO;
1620
1621                 intelfbhw_cursor_reset(dinfo);
1622         }
1623
1624         if (cursor->set & FB_CUR_SETCMAP) {
1625                 u32 fg, bg;
1626
1627                 if (dinfo->depth != 8) {
1628                         fg = dinfo->pseudo_palette[cursor->image.fg_color];
1629                         bg = dinfo->pseudo_palette[cursor->image.bg_color];
1630                 } else {
1631                         fg = cursor->image.fg_color;
1632                         bg = cursor->image.bg_color;
1633                 }
1634
1635                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1636         }
1637
1638         if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1639                 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1640                 u32 size = s_pitch * cursor->image.height;
1641                 u8 *dat = (u8 *) cursor->image.data;
1642                 u8 *msk = (u8 *) cursor->mask;
1643                 u8 src[64];
1644                 u32 i;
1645
1646                 if (cursor->image.depth != 1)
1647                         return -ENXIO;
1648
1649                 switch (cursor->rop) {
1650                 case ROP_XOR:
1651                         for (i = 0; i < size; i++)
1652                                 src[i] = dat[i] ^ msk[i];
1653                         break;
1654                 case ROP_COPY:
1655                 default:
1656                         for (i = 0; i < size; i++)
1657                                 src[i] = dat[i] & msk[i];
1658                         break;
1659                 }
1660
1661                 /* save the bitmap to restore it when XFree will
1662                    make the cursor dirty */
1663                 memcpy(dinfo->cursor_src, src, size);
1664
1665                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1666                                       cursor->image.height, src);
1667         }
1668
1669         if (cursor->enable)
1670                 intelfbhw_cursor_show(dinfo);
1671
1672         return 0;
1673 }
1674
1675 static int intelfb_sync(struct fb_info *info)
1676 {
1677         struct intelfb_info *dinfo = GET_DINFO(info);
1678
1679 #if VERBOSE > 0
1680         DBG_MSG("intelfb_sync\n");
1681 #endif
1682
1683         if (dinfo->ring_lockup)
1684                 return 0;
1685
1686         intelfbhw_do_sync(dinfo);
1687         return 0;
1688 }
1689