linux/drivers/video/fbdev/intelfb/intelfbdrv.c
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   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#include "intelfb.h"
 128#include "intelfbhw.h"
 129#include "../edid.h"
 130
 131static void get_initial_mode(struct intelfb_info *dinfo);
 132static void update_dinfo(struct intelfb_info *dinfo,
 133                         struct fb_var_screeninfo *var);
 134static int intelfb_open(struct fb_info *info, int user);
 135static int intelfb_release(struct fb_info *info, int user);
 136static int intelfb_check_var(struct fb_var_screeninfo *var,
 137                             struct fb_info *info);
 138static int intelfb_set_par(struct fb_info *info);
 139static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 140                             unsigned blue, unsigned transp,
 141                             struct fb_info *info);
 142
 143static int intelfb_blank(int blank, struct fb_info *info);
 144static int intelfb_pan_display(struct fb_var_screeninfo *var,
 145                               struct fb_info *info);
 146
 147static void intelfb_fillrect(struct fb_info *info,
 148                             const struct fb_fillrect *rect);
 149static void intelfb_copyarea(struct fb_info *info,
 150                             const struct fb_copyarea *region);
 151static void intelfb_imageblit(struct fb_info *info,
 152                              const struct fb_image *image);
 153static int intelfb_cursor(struct fb_info *info,
 154                           struct fb_cursor *cursor);
 155
 156static int intelfb_sync(struct fb_info *info);
 157
 158static int intelfb_ioctl(struct fb_info *info,
 159                         unsigned int cmd, unsigned long arg);
 160
 161static int intelfb_pci_register(struct pci_dev *pdev,
 162                                const struct pci_device_id *ent);
 163static void intelfb_pci_unregister(struct pci_dev *pdev);
 164static int intelfb_set_fbinfo(struct intelfb_info *dinfo);
 165
 166/*
 167 * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
 168 * mobile chipsets from being registered.
 169 */
 170#if DETECT_VGA_CLASS_ONLY
 171#define INTELFB_CLASS_MASK ~0 << 8
 172#else
 173#define INTELFB_CLASS_MASK 0
 174#endif
 175
 176static const struct pci_device_id intelfb_pci_table[] = {
 177        { 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 },
 178        { 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 },
 179        { 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 },
 180        { 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 },
 181        { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_854, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_854 },
 182        { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915G },
 183        { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915GM },
 184        { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945G },
 185        { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GM },
 186        { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GME, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GME },
 187        { 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 },
 188        { 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 },
 189        { 0, }
 190};
 191
 192/* Global data */
 193static int num_registered = 0;
 194
 195/* fb ops */
 196static struct fb_ops intel_fb_ops = {
 197        .owner =                THIS_MODULE,
 198        .fb_open =              intelfb_open,
 199        .fb_release =           intelfb_release,
 200        .fb_check_var =         intelfb_check_var,
 201        .fb_set_par =           intelfb_set_par,
 202        .fb_setcolreg =         intelfb_setcolreg,
 203        .fb_blank =             intelfb_blank,
 204        .fb_pan_display =       intelfb_pan_display,
 205        .fb_fillrect  =         intelfb_fillrect,
 206        .fb_copyarea  =         intelfb_copyarea,
 207        .fb_imageblit =         intelfb_imageblit,
 208        .fb_cursor =            intelfb_cursor,
 209        .fb_sync =              intelfb_sync,
 210        .fb_ioctl =             intelfb_ioctl
 211};
 212
 213/* PCI driver module table */
 214static struct pci_driver intelfb_driver = {
 215        .name =         "intelfb",
 216        .id_table =     intelfb_pci_table,
 217        .probe =        intelfb_pci_register,
 218        .remove =       intelfb_pci_unregister,
 219};
 220
 221/* Module description/parameters */
 222MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
 223              "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
 224MODULE_DESCRIPTION("Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS
 225                   " chipsets");
 226MODULE_LICENSE("Dual BSD/GPL");
 227MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
 228
 229static bool accel       = 1;
 230static int vram         = 4;
 231static bool hwcursor    = 0;
 232static bool mtrr        = 1;
 233static bool fixed       = 0;
 234static bool noinit      = 0;
 235static bool noregister  = 0;
 236static bool probeonly   = 0;
 237static bool idonly      = 0;
 238static int bailearly    = 0;
 239static int voffset      = 48;
 240static char *mode       = NULL;
 241
 242module_param(accel, bool, S_IRUGO);
 243MODULE_PARM_DESC(accel, "Enable hardware acceleration");
 244module_param(vram, int, S_IRUGO);
 245MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
 246module_param(voffset, int, S_IRUGO);
 247MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
 248module_param(hwcursor, bool, S_IRUGO);
 249MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
 250module_param(mtrr, bool, S_IRUGO);
 251MODULE_PARM_DESC(mtrr, "Enable MTRR support");
 252module_param(fixed, bool, S_IRUGO);
 253MODULE_PARM_DESC(fixed, "Disable mode switching");
 254module_param(noinit, bool, 0);
 255MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
 256module_param(noregister, bool, 0);
 257MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
 258module_param(probeonly, bool, 0);
 259MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
 260module_param(idonly, bool, 0);
 261MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
 262module_param(bailearly, int, 0);
 263MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
 264module_param(mode, charp, S_IRUGO);
 265MODULE_PARM_DESC(mode,
 266                 "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
 267
 268#ifndef MODULE
 269#define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
 270#define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
 271#define OPT_STRVAL(opt, name) (opt + strlen(name))
 272
 273static __inline__ char * get_opt_string(const char *this_opt, const char *name)
 274{
 275        const char *p;
 276        int i;
 277        char *ret;
 278
 279        p = OPT_STRVAL(this_opt, name);
 280        i = 0;
 281        while (p[i] && p[i] != ' ' && p[i] != ',')
 282                i++;
 283        ret = kmalloc(i + 1, GFP_KERNEL);
 284        if (ret) {
 285                strncpy(ret, p, i);
 286                ret[i] = '\0';
 287        }
 288        return ret;
 289}
 290
 291static __inline__ int get_opt_int(const char *this_opt, const char *name,
 292                                  int *ret)
 293{
 294        if (!ret)
 295                return 0;
 296
 297        if (!OPT_EQUAL(this_opt, name))
 298                return 0;
 299
 300        *ret = OPT_INTVAL(this_opt, name);
 301        return 1;
 302}
 303
 304static __inline__ int get_opt_bool(const char *this_opt, const char *name,
 305                                   bool *ret)
 306{
 307        if (!ret)
 308                return 0;
 309
 310        if (OPT_EQUAL(this_opt, name)) {
 311                if (this_opt[strlen(name)] == '=')
 312                        *ret = simple_strtoul(this_opt + strlen(name) + 1,
 313                                              NULL, 0);
 314                else
 315                        *ret = 1;
 316        } else {
 317                if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
 318                        *ret = 0;
 319                else
 320                        return 0;
 321        }
 322        return 1;
 323}
 324
 325static int __init intelfb_setup(char *options)
 326{
 327        char *this_opt;
 328
 329        DBG_MSG("intelfb_setup\n");
 330
 331        if (!options || !*options) {
 332                DBG_MSG("no options\n");
 333                return 0;
 334        } else
 335                DBG_MSG("options: %s\n", options);
 336
 337        /*
 338         * These are the built-in options analogous to the module parameters
 339         * defined above.
 340         *
 341         * The syntax is:
 342         *
 343         *    video=intelfb:[mode][,<param>=<val>] ...
 344         *
 345         * e.g.,
 346         *
 347         *    video=intelfb:1024x768-16@75,accel=0
 348         */
 349
 350        while ((this_opt = strsep(&options, ","))) {
 351                if (!*this_opt)
 352                        continue;
 353                if (get_opt_bool(this_opt, "accel", &accel))
 354                        ;
 355                else if (get_opt_int(this_opt, "vram", &vram))
 356                        ;
 357                else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
 358                        ;
 359                else if (get_opt_bool(this_opt, "mtrr", &mtrr))
 360                        ;
 361                else if (get_opt_bool(this_opt, "fixed", &fixed))
 362                        ;
 363                else if (get_opt_bool(this_opt, "init", &noinit))
 364                        noinit = !noinit;
 365                else if (OPT_EQUAL(this_opt, "mode="))
 366                        mode = get_opt_string(this_opt, "mode=");
 367                else
 368                        mode = this_opt;
 369        }
 370
 371        return 0;
 372}
 373
 374#endif
 375
 376static int __init intelfb_init(void)
 377{
 378#ifndef MODULE
 379        char *option = NULL;
 380#endif
 381
 382        DBG_MSG("intelfb_init\n");
 383
 384        INF_MSG("Framebuffer driver for "
 385                "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
 386        INF_MSG("Version " INTELFB_VERSION "\n");
 387
 388        if (idonly)
 389                return -ENODEV;
 390
 391#ifndef MODULE
 392        if (fb_get_options("intelfb", &option))
 393                return -ENODEV;
 394        intelfb_setup(option);
 395#endif
 396
 397        return pci_register_driver(&intelfb_driver);
 398}
 399
 400static void __exit intelfb_exit(void)
 401{
 402        DBG_MSG("intelfb_exit\n");
 403        pci_unregister_driver(&intelfb_driver);
 404}
 405
 406module_init(intelfb_init);
 407module_exit(intelfb_exit);
 408
 409/***************************************************************
 410 *                        driver init / cleanup                *
 411 ***************************************************************/
 412
 413static void cleanup(struct intelfb_info *dinfo)
 414{
 415        DBG_MSG("cleanup\n");
 416
 417        if (!dinfo)
 418                return;
 419
 420        intelfbhw_disable_irq(dinfo);
 421
 422        fb_dealloc_cmap(&dinfo->info->cmap);
 423        kfree(dinfo->info->pixmap.addr);
 424
 425        if (dinfo->registered)
 426                unregister_framebuffer(dinfo->info);
 427
 428        arch_phys_wc_del(dinfo->wc_cookie);
 429
 430        if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
 431                agp_unbind_memory(dinfo->gtt_fb_mem);
 432                agp_free_memory(dinfo->gtt_fb_mem);
 433        }
 434        if (dinfo->gtt_cursor_mem) {
 435                agp_unbind_memory(dinfo->gtt_cursor_mem);
 436                agp_free_memory(dinfo->gtt_cursor_mem);
 437        }
 438        if (dinfo->gtt_ring_mem) {
 439                agp_unbind_memory(dinfo->gtt_ring_mem);
 440                agp_free_memory(dinfo->gtt_ring_mem);
 441        }
 442
 443#ifdef CONFIG_FB_INTEL_I2C
 444        /* un-register I2C bus */
 445        intelfb_delete_i2c_busses(dinfo);
 446#endif
 447
 448        if (dinfo->mmio_base)
 449                iounmap((void __iomem *)dinfo->mmio_base);
 450        if (dinfo->aperture.virtual)
 451                iounmap((void __iomem *)dinfo->aperture.virtual);
 452
 453        if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
 454                release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
 455        if (dinfo->flag & INTELFB_FB_ACQUIRED)
 456                release_mem_region(dinfo->aperture.physical,
 457                                   dinfo->aperture.size);
 458        framebuffer_release(dinfo->info);
 459}
 460
 461#define bailout(dinfo) do {                                             \
 462        DBG_MSG("bailout\n");                                           \
 463        cleanup(dinfo);                                                 \
 464        INF_MSG("Not going to register framebuffer, exiting...\n");     \
 465        return -ENODEV;                                                 \
 466} while (0)
 467
 468
 469static int intelfb_pci_register(struct pci_dev *pdev,
 470                                const struct pci_device_id *ent)
 471{
 472        struct fb_info *info;
 473        struct intelfb_info *dinfo;
 474        int i, err, dvo;
 475        int aperture_size, stolen_size;
 476        struct agp_kern_info gtt_info;
 477        int agp_memtype;
 478        const char *s;
 479        struct agp_bridge_data *bridge;
 480        int aperture_bar = 0;
 481        int mmio_bar = 1;
 482        int offset;
 483
 484        DBG_MSG("intelfb_pci_register\n");
 485
 486        num_registered++;
 487        if (num_registered != 1) {
 488                ERR_MSG("Attempted to register %d devices "
 489                        "(should be only 1).\n", num_registered);
 490                return -ENODEV;
 491        }
 492
 493        info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
 494        if (!info) {
 495                ERR_MSG("Could not allocate memory for intelfb_info.\n");
 496                return -ENODEV;
 497        }
 498        if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
 499                ERR_MSG("Could not allocate cmap for intelfb_info.\n");
 500                goto err_out_cmap;
 501        }
 502
 503        dinfo = info->par;
 504        dinfo->info  = info;
 505        dinfo->fbops = &intel_fb_ops;
 506        dinfo->pdev  = pdev;
 507
 508        /* Reserve pixmap space. */
 509        info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
 510        if (info->pixmap.addr == NULL) {
 511                ERR_MSG("Cannot reserve pixmap memory.\n");
 512                goto err_out_pixmap;
 513        }
 514
 515        /* set early this option because it could be changed by tv encoder
 516           driver */
 517        dinfo->fixed_mode = fixed;
 518
 519        /* Enable device. */
 520        if ((err = pci_enable_device(pdev))) {
 521                ERR_MSG("Cannot enable device.\n");
 522                cleanup(dinfo);
 523                return -ENODEV;
 524        }
 525
 526        /* Set base addresses. */
 527        if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
 528            (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
 529            (ent->device == PCI_DEVICE_ID_INTEL_945G)  ||
 530            (ent->device == PCI_DEVICE_ID_INTEL_945GM) ||
 531            (ent->device == PCI_DEVICE_ID_INTEL_945GME) ||
 532            (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
 533            (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
 534
 535                aperture_bar = 2;
 536                mmio_bar = 0;
 537        }
 538        dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
 539        dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
 540        dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
 541        DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
 542                (unsigned long long)pci_resource_start(pdev, aperture_bar),
 543                (unsigned long long)pci_resource_len(pdev, aperture_bar),
 544                (unsigned long long)pci_resource_start(pdev, mmio_bar),
 545                (unsigned long long)pci_resource_len(pdev, mmio_bar));
 546
 547        /* Reserve the fb and MMIO regions */
 548        if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
 549                                INTELFB_MODULE_NAME)) {
 550                ERR_MSG("Cannot reserve FB region.\n");
 551                cleanup(dinfo);
 552                return -ENODEV;
 553        }
 554
 555        dinfo->flag |= INTELFB_FB_ACQUIRED;
 556
 557        if (!request_mem_region(dinfo->mmio_base_phys,
 558                                INTEL_REG_SIZE,
 559                                INTELFB_MODULE_NAME)) {
 560                ERR_MSG("Cannot reserve MMIO region.\n");
 561                cleanup(dinfo);
 562                return -ENODEV;
 563        }
 564
 565        dinfo->flag |= INTELFB_MMIO_ACQUIRED;
 566
 567        /* Get the chipset info. */
 568        dinfo->pci_chipset = pdev->device;
 569
 570        if (intelfbhw_get_chipset(pdev, dinfo)) {
 571                cleanup(dinfo);
 572                return -ENODEV;
 573        }
 574
 575        if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
 576                cleanup(dinfo);
 577                return -ENODEV;
 578        }
 579
 580        INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
 581                "stolen memory %dkB\n",
 582                pdev->bus->number, PCI_SLOT(pdev->devfn),
 583                PCI_FUNC(pdev->devfn), dinfo->name,
 584                BtoMB(aperture_size), BtoKB(stolen_size));
 585
 586        /* Set these from the options. */
 587        dinfo->accel    = accel;
 588        dinfo->hwcursor = hwcursor;
 589
 590        if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
 591                INF_MSG("Acceleration is not supported for the %s chipset.\n",
 592                        dinfo->name);
 593                dinfo->accel = 0;
 594        }
 595
 596        /* Framebuffer parameters - Use all the stolen memory if >= vram */
 597        if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
 598                dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
 599                dinfo->fbmem_gart = 0;
 600        } else {
 601                dinfo->fb.size =  MB(vram);
 602                dinfo->fbmem_gart = 1;
 603        }
 604
 605        /* Allocate space for the ring buffer and HW cursor if enabled. */
 606        if (dinfo->accel) {
 607                dinfo->ring.size = RINGBUFFER_SIZE;
 608                dinfo->ring_tail_mask = dinfo->ring.size - 1;
 609        }
 610        if (dinfo->hwcursor)
 611                dinfo->cursor.size = HW_CURSOR_SIZE;
 612
 613        /* Use agpgart to manage the GATT */
 614        if (!(bridge = agp_backend_acquire(pdev))) {
 615                ERR_MSG("cannot acquire agp\n");
 616                cleanup(dinfo);
 617                return -ENODEV;
 618        }
 619
 620        /* get the current gatt info */
 621        if (agp_copy_info(bridge, &gtt_info)) {
 622                ERR_MSG("cannot get agp info\n");
 623                agp_backend_release(bridge);
 624                cleanup(dinfo);
 625                return -ENODEV;
 626        }
 627
 628        if (MB(voffset) < stolen_size)
 629                offset = (stolen_size >> 12);
 630        else
 631                offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
 632
 633        /* set the mem offsets - set them after the already used pages */
 634        if (dinfo->accel)
 635                dinfo->ring.offset = offset + gtt_info.current_memory;
 636        if (dinfo->hwcursor)
 637                dinfo->cursor.offset = offset +
 638                        + gtt_info.current_memory + (dinfo->ring.size >> 12);
 639        if (dinfo->fbmem_gart)
 640                dinfo->fb.offset = offset +
 641                        + gtt_info.current_memory + (dinfo->ring.size >> 12)
 642                        + (dinfo->cursor.size >> 12);
 643
 644        /* Allocate memories (which aren't stolen) */
 645        /* Map the fb and MMIO regions */
 646        /* ioremap only up to the end of used aperture */
 647        dinfo->aperture.virtual = (u8 __iomem *)ioremap_wc
 648                (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
 649                 + dinfo->fb.size);
 650        if (!dinfo->aperture.virtual) {
 651                ERR_MSG("Cannot remap FB region.\n");
 652                agp_backend_release(bridge);
 653                cleanup(dinfo);
 654                return -ENODEV;
 655        }
 656
 657        dinfo->mmio_base =
 658                (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
 659                                              INTEL_REG_SIZE);
 660        if (!dinfo->mmio_base) {
 661                ERR_MSG("Cannot remap MMIO region.\n");
 662                agp_backend_release(bridge);
 663                cleanup(dinfo);
 664                return -ENODEV;
 665        }
 666
 667        if (dinfo->accel) {
 668                if (!(dinfo->gtt_ring_mem =
 669                      agp_allocate_memory(bridge, dinfo->ring.size >> 12,
 670                                          AGP_NORMAL_MEMORY))) {
 671                        ERR_MSG("cannot allocate ring buffer memory\n");
 672                        agp_backend_release(bridge);
 673                        cleanup(dinfo);
 674                        return -ENOMEM;
 675                }
 676                if (agp_bind_memory(dinfo->gtt_ring_mem,
 677                                    dinfo->ring.offset)) {
 678                        ERR_MSG("cannot bind ring buffer memory\n");
 679                        agp_backend_release(bridge);
 680                        cleanup(dinfo);
 681                        return -EBUSY;
 682                }
 683                dinfo->ring.physical = dinfo->aperture.physical
 684                        + (dinfo->ring.offset << 12);
 685                dinfo->ring.virtual  = dinfo->aperture.virtual
 686                        + (dinfo->ring.offset << 12);
 687                dinfo->ring_head = 0;
 688        }
 689        if (dinfo->hwcursor) {
 690                agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
 691                        : AGP_NORMAL_MEMORY;
 692                if (!(dinfo->gtt_cursor_mem =
 693                      agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
 694                                          agp_memtype))) {
 695                        ERR_MSG("cannot allocate cursor memory\n");
 696                        agp_backend_release(bridge);
 697                        cleanup(dinfo);
 698                        return -ENOMEM;
 699                }
 700                if (agp_bind_memory(dinfo->gtt_cursor_mem,
 701                                    dinfo->cursor.offset)) {
 702                        ERR_MSG("cannot bind cursor memory\n");
 703                        agp_backend_release(bridge);
 704                        cleanup(dinfo);
 705                        return -EBUSY;
 706                }
 707                if (dinfo->mobile)
 708                        dinfo->cursor.physical
 709                                = dinfo->gtt_cursor_mem->physical;
 710                else
 711                        dinfo->cursor.physical = dinfo->aperture.physical
 712                                + (dinfo->cursor.offset << 12);
 713                dinfo->cursor.virtual = dinfo->aperture.virtual
 714                        + (dinfo->cursor.offset << 12);
 715        }
 716        if (dinfo->fbmem_gart) {
 717                if (!(dinfo->gtt_fb_mem =
 718                      agp_allocate_memory(bridge, dinfo->fb.size >> 12,
 719                                          AGP_NORMAL_MEMORY))) {
 720                        WRN_MSG("cannot allocate framebuffer memory - use "
 721                                "the stolen one\n");
 722                        dinfo->fbmem_gart = 0;
 723                }
 724                if (agp_bind_memory(dinfo->gtt_fb_mem,
 725                                    dinfo->fb.offset)) {
 726                        WRN_MSG("cannot bind framebuffer memory - use "
 727                                "the stolen one\n");
 728                        dinfo->fbmem_gart = 0;
 729                }
 730        }
 731
 732        /* update framebuffer memory parameters */
 733        if (!dinfo->fbmem_gart)
 734                dinfo->fb.offset = 0;   /* starts at offset 0 */
 735        dinfo->fb.physical = dinfo->aperture.physical
 736                + (dinfo->fb.offset << 12);
 737        dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
 738        dinfo->fb_start = dinfo->fb.offset << 12;
 739
 740        /* release agpgart */
 741        agp_backend_release(bridge);
 742
 743        if (mtrr)
 744                dinfo->wc_cookie = arch_phys_wc_add(dinfo->aperture.physical,
 745                                                    dinfo->aperture.size);
 746
 747        DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
 748                dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
 749                dinfo->fb.virtual);
 750        DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
 751                dinfo->mmio_base_phys, INTEL_REG_SIZE,
 752                dinfo->mmio_base);
 753        DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
 754                dinfo->ring.physical, dinfo->ring.size,
 755                dinfo->ring.virtual);
 756        DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
 757                dinfo->cursor.physical, dinfo->cursor.size,
 758                dinfo->cursor.virtual, dinfo->cursor.offset,
 759                dinfo->cursor.physical);
 760
 761        DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
 762                "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
 763        DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
 764
 765        if (probeonly)
 766                bailout(dinfo);
 767
 768        /*
 769         * Check if the LVDS port or any DVO ports are enabled.  If so,
 770         * don't allow mode switching
 771         */
 772        dvo = intelfbhw_check_non_crt(dinfo);
 773        if (dvo) {
 774                dinfo->fixed_mode = 1;
 775                WRN_MSG("Non-CRT device is enabled ( ");
 776                i = 0;
 777                while (dvo) {
 778                        if (dvo & 1) {
 779                                s = intelfbhw_dvo_to_string(1 << i);
 780                                if (s)
 781                                        printk("%s ", s);
 782                        }
 783                        dvo >>= 1;
 784                        ++i;
 785                }
 786                printk(").  Disabling mode switching.\n");
 787        }
 788
 789        if (bailearly == 1)
 790                bailout(dinfo);
 791
 792        if (FIXED_MODE(dinfo) &&
 793            screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
 794                ERR_MSG("Video mode must be programmed at boot time.\n");
 795                cleanup(dinfo);
 796                return -ENODEV;
 797        }
 798
 799        if (bailearly == 2)
 800                bailout(dinfo);
 801
 802        /* Initialise dinfo and related data. */
 803        /* If an initial mode was programmed at boot time, get its details. */
 804        if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
 805                get_initial_mode(dinfo);
 806
 807        if (bailearly == 3)
 808                bailout(dinfo);
 809
 810        if (FIXED_MODE(dinfo))  /* remap fb address */
 811                update_dinfo(dinfo, &dinfo->initial_var);
 812
 813        if (bailearly == 4)
 814                bailout(dinfo);
 815
 816
 817        if (intelfb_set_fbinfo(dinfo)) {
 818                cleanup(dinfo);
 819                return -ENODEV;
 820        }
 821
 822        if (bailearly == 5)
 823                bailout(dinfo);
 824
 825#ifdef CONFIG_FB_INTEL_I2C
 826        /* register I2C bus */
 827        intelfb_create_i2c_busses(dinfo);
 828#endif
 829
 830        if (bailearly == 6)
 831                bailout(dinfo);
 832
 833        pci_set_drvdata(pdev, dinfo);
 834
 835        /* Save the initial register state. */
 836        i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
 837                                    bailearly > 6 ? bailearly - 6 : 0);
 838        if (i != 0) {
 839                DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
 840                bailout(dinfo);
 841        }
 842
 843        intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
 844
 845        if (bailearly == 18)
 846                bailout(dinfo);
 847
 848        /* read active pipe */
 849        dinfo->pipe = intelfbhw_active_pipe(&dinfo->save_state);
 850
 851        /* Cursor initialisation */
 852        if (dinfo->hwcursor) {
 853                intelfbhw_cursor_init(dinfo);
 854                intelfbhw_cursor_reset(dinfo);
 855        }
 856
 857        if (bailearly == 19)
 858                bailout(dinfo);
 859
 860        /* 2d acceleration init */
 861        if (dinfo->accel)
 862                intelfbhw_2d_start(dinfo);
 863
 864        if (bailearly == 20)
 865                bailout(dinfo);
 866
 867        if (noregister)
 868                bailout(dinfo);
 869
 870        if (register_framebuffer(dinfo->info) < 0) {
 871                ERR_MSG("Cannot register framebuffer.\n");
 872                cleanup(dinfo);
 873                return -ENODEV;
 874        }
 875
 876        dinfo->registered = 1;
 877        dinfo->open = 0;
 878
 879        init_waitqueue_head(&dinfo->vsync.wait);
 880        spin_lock_init(&dinfo->int_lock);
 881        dinfo->irq_flags = 0;
 882        dinfo->vsync.pan_display = 0;
 883        dinfo->vsync.pan_offset = 0;
 884
 885        return 0;
 886
 887err_out_pixmap:
 888        fb_dealloc_cmap(&info->cmap);
 889err_out_cmap:
 890        framebuffer_release(info);
 891        return -ENODEV;
 892}
 893
 894static void intelfb_pci_unregister(struct pci_dev *pdev)
 895{
 896        struct intelfb_info *dinfo = pci_get_drvdata(pdev);
 897
 898        DBG_MSG("intelfb_pci_unregister\n");
 899
 900        if (!dinfo)
 901                return;
 902
 903        cleanup(dinfo);
 904}
 905
 906/***************************************************************
 907 *                       helper functions                      *
 908 ***************************************************************/
 909
 910__inline__ int intelfb_var_to_depth(const struct fb_var_screeninfo *var)
 911{
 912        DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
 913                var->bits_per_pixel, var->green.length);
 914
 915        switch (var->bits_per_pixel) {
 916        case 16:
 917                return (var->green.length == 6) ? 16 : 15;
 918        case 32:
 919                return 24;
 920        default:
 921                return var->bits_per_pixel;
 922        }
 923}
 924
 925
 926static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
 927{
 928        int xtot = var->xres + var->left_margin + var->right_margin +
 929                   var->hsync_len;
 930        int ytot = var->yres + var->upper_margin + var->lower_margin +
 931                   var->vsync_len;
 932
 933        return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
 934}
 935
 936/***************************************************************
 937 *                Various initialisation functions             *
 938 ***************************************************************/
 939
 940static void get_initial_mode(struct intelfb_info *dinfo)
 941{
 942        struct fb_var_screeninfo *var;
 943        int xtot, ytot;
 944
 945        DBG_MSG("get_initial_mode\n");
 946
 947        dinfo->initial_vga = 1;
 948        dinfo->initial_fb_base = screen_info.lfb_base;
 949        dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
 950        dinfo->initial_pitch = screen_info.lfb_linelength;
 951
 952        var = &dinfo->initial_var;
 953        memset(var, 0, sizeof(*var));
 954        var->xres = screen_info.lfb_width;
 955        var->yres = screen_info.lfb_height;
 956        var->bits_per_pixel = screen_info.lfb_depth;
 957        switch (screen_info.lfb_depth) {
 958        case 15:
 959                var->bits_per_pixel = 16;
 960                break;
 961        case 24:
 962                var->bits_per_pixel = 32;
 963                break;
 964        }
 965
 966        DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
 967                dinfo->initial_fb_base, dinfo->initial_video_ram,
 968                BtoKB(dinfo->initial_video_ram));
 969
 970        DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
 971                var->xres, var->yres, var->bits_per_pixel,
 972                dinfo->initial_pitch);
 973
 974        /* Dummy timing values (assume 60Hz) */
 975        var->left_margin = (var->xres / 8) & 0xf8;
 976        var->right_margin = 32;
 977        var->upper_margin = 16;
 978        var->lower_margin = 4;
 979        var->hsync_len = (var->xres / 8) & 0xf8;
 980        var->vsync_len = 4;
 981
 982        xtot = var->xres + var->left_margin +
 983                var->right_margin + var->hsync_len;
 984        ytot = var->yres + var->upper_margin +
 985                var->lower_margin + var->vsync_len;
 986        var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
 987
 988        var->height = -1;
 989        var->width = -1;
 990
 991        if (var->bits_per_pixel > 8) {
 992                var->red.offset = screen_info.red_pos;
 993                var->red.length = screen_info.red_size;
 994                var->green.offset = screen_info.green_pos;
 995                var->green.length = screen_info.green_size;
 996                var->blue.offset = screen_info.blue_pos;
 997                var->blue.length = screen_info.blue_size;
 998                var->transp.offset = screen_info.rsvd_pos;
 999                var->transp.length = screen_info.rsvd_size;
1000        } else {
1001                var->red.length = 8;
1002                var->green.length = 8;
1003                var->blue.length = 8;
1004        }
1005}
1006
1007static int intelfb_init_var(struct intelfb_info *dinfo)
1008{
1009        struct fb_var_screeninfo *var;
1010        int msrc = 0;
1011
1012        DBG_MSG("intelfb_init_var\n");
1013
1014        var = &dinfo->info->var;
1015        if (FIXED_MODE(dinfo)) {
1016                memcpy(var, &dinfo->initial_var,
1017                       sizeof(struct fb_var_screeninfo));
1018                msrc = 5;
1019        } else {
1020                const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1021                u8 *edid_d = NULL;
1022
1023                if (edid_s) {
1024                        edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1025
1026                        if (edid_d) {
1027                                fb_edid_to_monspecs(edid_d,
1028                                                    &dinfo->info->monspecs);
1029                                kfree(edid_d);
1030                        }
1031                }
1032
1033                if (mode) {
1034                        printk("intelfb: Looking for mode in private "
1035                               "database\n");
1036                        msrc = fb_find_mode(var, dinfo->info, mode,
1037                                            dinfo->info->monspecs.modedb,
1038                                            dinfo->info->monspecs.modedb_len,
1039                                            NULL, 0);
1040
1041                        if (msrc && msrc > 1) {
1042                                printk("intelfb: No mode in private database, "
1043                                       "intelfb: looking for mode in global "
1044                                       "database ");
1045                                msrc = fb_find_mode(var, dinfo->info, mode,
1046                                                    NULL, 0, NULL, 0);
1047
1048                                if (msrc)
1049                                        msrc |= 8;
1050                        }
1051
1052                }
1053
1054                if (!msrc)
1055                        msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1056                                            NULL, 0, NULL, 0);
1057        }
1058
1059        if (!msrc) {
1060                ERR_MSG("Cannot find a suitable video mode.\n");
1061                return 1;
1062        }
1063
1064        INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1065                var->bits_per_pixel, var_to_refresh(var));
1066
1067        DBG_MSG("Initial video mode is from %d.\n", msrc);
1068
1069#if ALLOCATE_FOR_PANNING
1070        /* Allow use of half of the video ram for panning */
1071        var->xres_virtual = var->xres;
1072        var->yres_virtual =
1073                dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1074        if (var->yres_virtual < var->yres)
1075                var->yres_virtual = var->yres;
1076#else
1077        var->yres_virtual = var->yres;
1078#endif
1079
1080        if (dinfo->accel)
1081                var->accel_flags |= FB_ACCELF_TEXT;
1082        else
1083                var->accel_flags &= ~FB_ACCELF_TEXT;
1084
1085        return 0;
1086}
1087
1088static int intelfb_set_fbinfo(struct intelfb_info *dinfo)
1089{
1090        struct fb_info *info = dinfo->info;
1091
1092        DBG_MSG("intelfb_set_fbinfo\n");
1093
1094        info->flags = FBINFO_FLAG_DEFAULT;
1095        info->fbops = &intel_fb_ops;
1096        info->pseudo_palette = dinfo->pseudo_palette;
1097
1098        info->pixmap.size = 64*1024;
1099        info->pixmap.buf_align = 8;
1100        info->pixmap.access_align = 32;
1101        info->pixmap.flags = FB_PIXMAP_SYSTEM;
1102
1103        if (intelfb_init_var(dinfo))
1104                return 1;
1105
1106        info->pixmap.scan_align = 1;
1107        strcpy(info->fix.id, dinfo->name);
1108        info->fix.smem_start = dinfo->fb.physical;
1109        info->fix.smem_len = dinfo->fb.size;
1110        info->fix.type = FB_TYPE_PACKED_PIXELS;
1111        info->fix.type_aux = 0;
1112        info->fix.xpanstep = 8;
1113        info->fix.ypanstep = 1;
1114        info->fix.ywrapstep = 0;
1115        info->fix.mmio_start = dinfo->mmio_base_phys;
1116        info->fix.mmio_len = INTEL_REG_SIZE;
1117        info->fix.accel = FB_ACCEL_I830;
1118        update_dinfo(dinfo, &info->var);
1119
1120        return 0;
1121}
1122
1123/* Update dinfo to match the active video mode. */
1124static void update_dinfo(struct intelfb_info *dinfo,
1125                         struct fb_var_screeninfo *var)
1126{
1127        DBG_MSG("update_dinfo\n");
1128
1129        dinfo->bpp = var->bits_per_pixel;
1130        dinfo->depth = intelfb_var_to_depth(var);
1131        dinfo->xres = var->xres;
1132        dinfo->yres = var->xres;
1133        dinfo->pixclock = var->pixclock;
1134
1135        dinfo->info->fix.visual = dinfo->visual;
1136        dinfo->info->fix.line_length = dinfo->pitch;
1137
1138        switch (dinfo->bpp) {
1139        case 8:
1140                dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1141                dinfo->pitch = var->xres_virtual;
1142                break;
1143        case 16:
1144                dinfo->visual = FB_VISUAL_TRUECOLOR;
1145                dinfo->pitch = var->xres_virtual * 2;
1146                break;
1147        case 32:
1148                dinfo->visual = FB_VISUAL_TRUECOLOR;
1149                dinfo->pitch = var->xres_virtual * 4;
1150                break;
1151        }
1152
1153        /* Make sure the line length is a aligned correctly. */
1154        if (IS_I9XX(dinfo))
1155                dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1156        else
1157                dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1158
1159        if (FIXED_MODE(dinfo))
1160                dinfo->pitch = dinfo->initial_pitch;
1161
1162        dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1163        dinfo->info->fix.line_length = dinfo->pitch;
1164        dinfo->info->fix.visual = dinfo->visual;
1165}
1166
1167/* fbops functions */
1168
1169/***************************************************************
1170 *                       fbdev interface                       *
1171 ***************************************************************/
1172
1173static int intelfb_open(struct fb_info *info, int user)
1174{
1175        struct intelfb_info *dinfo = GET_DINFO(info);
1176
1177        if (user)
1178                dinfo->open++;
1179
1180        return 0;
1181}
1182
1183static int intelfb_release(struct fb_info *info, int user)
1184{
1185        struct intelfb_info *dinfo = GET_DINFO(info);
1186
1187        if (user) {
1188                dinfo->open--;
1189                msleep(1);
1190                if (!dinfo->open)
1191                        intelfbhw_disable_irq(dinfo);
1192        }
1193
1194        return 0;
1195}
1196
1197static int intelfb_check_var(struct fb_var_screeninfo *var,
1198                             struct fb_info *info)
1199{
1200        int change_var = 0;
1201        struct fb_var_screeninfo v;
1202        struct intelfb_info *dinfo;
1203        static int first = 1;
1204        int i;
1205        /* Good pitches to allow tiling.  Don't care about pitches < 1024. */
1206        static const int pitches[] = {
1207                128 * 8,
1208                128 * 16,
1209                128 * 32,
1210                128 * 64,
1211                0
1212        };
1213
1214        DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1215
1216        dinfo = GET_DINFO(info);
1217
1218        /* update the pitch */
1219        if (intelfbhw_validate_mode(dinfo, var) != 0)
1220                return -EINVAL;
1221
1222        v = *var;
1223
1224        for (i = 0; pitches[i] != 0; i++) {
1225                if (pitches[i] >= v.xres_virtual) {
1226                        v.xres_virtual = pitches[i];
1227                        break;
1228                }
1229        }
1230
1231        /* Check for a supported bpp. */
1232        if (v.bits_per_pixel <= 8)
1233                v.bits_per_pixel = 8;
1234        else if (v.bits_per_pixel <= 16) {
1235                if (v.bits_per_pixel == 16)
1236                        v.green.length = 6;
1237                v.bits_per_pixel = 16;
1238        } else if (v.bits_per_pixel <= 32)
1239                v.bits_per_pixel = 32;
1240        else
1241                return -EINVAL;
1242
1243        change_var = ((info->var.xres != var->xres) ||
1244                      (info->var.yres != var->yres) ||
1245                      (info->var.xres_virtual != var->xres_virtual) ||
1246                      (info->var.yres_virtual != var->yres_virtual) ||
1247                      (info->var.bits_per_pixel != var->bits_per_pixel) ||
1248                      memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1249                      memcmp(&info->var.green, &var->green,
1250                             sizeof(var->green)) ||
1251                      memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1252
1253        if (FIXED_MODE(dinfo) &&
1254            (change_var ||
1255             var->yres_virtual > dinfo->initial_var.yres_virtual ||
1256             var->yres_virtual < dinfo->initial_var.yres ||
1257             var->xoffset || var->nonstd)) {
1258                if (first) {
1259                        ERR_MSG("Changing the video mode is not supported.\n");
1260                        first = 0;
1261                }
1262                return -EINVAL;
1263        }
1264
1265        switch (intelfb_var_to_depth(&v)) {
1266        case 8:
1267                v.red.offset = v.green.offset = v.blue.offset = 0;
1268                v.red.length = v.green.length = v.blue.length = 8;
1269                v.transp.offset = v.transp.length = 0;
1270                break;
1271        case 15:
1272                v.red.offset = 10;
1273                v.green.offset = 5;
1274                v.blue.offset = 0;
1275                v.red.length = v.green.length = v.blue.length = 5;
1276                v.transp.offset = v.transp.length = 0;
1277                break;
1278        case 16:
1279                v.red.offset = 11;
1280                v.green.offset = 5;
1281                v.blue.offset = 0;
1282                v.red.length = 5;
1283                v.green.length = 6;
1284                v.blue.length = 5;
1285                v.transp.offset = v.transp.length = 0;
1286                break;
1287        case 24:
1288                v.red.offset = 16;
1289                v.green.offset = 8;
1290                v.blue.offset = 0;
1291                v.red.length = v.green.length = v.blue.length = 8;
1292                v.transp.offset = v.transp.length = 0;
1293                break;
1294        case 32:
1295                v.red.offset = 16;
1296                v.green.offset = 8;
1297                v.blue.offset = 0;
1298                v.red.length = v.green.length = v.blue.length = 8;
1299                v.transp.offset = 24;
1300                v.transp.length = 8;
1301                break;
1302        }
1303
1304        if (v.xoffset > v.xres_virtual - v.xres)
1305                v.xoffset = v.xres_virtual - v.xres;
1306        if (v.yoffset > v.yres_virtual - v.yres)
1307                v.yoffset = v.yres_virtual - v.yres;
1308
1309        v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1310                          v.transp.msb_right = 0;
1311
1312        *var = v;
1313
1314        return 0;
1315}
1316
1317static int intelfb_set_par(struct fb_info *info)
1318{
1319        struct intelfb_hwstate *hw;
1320        struct intelfb_info *dinfo = GET_DINFO(info);
1321
1322        if (FIXED_MODE(dinfo)) {
1323                ERR_MSG("Changing the video mode is not supported.\n");
1324                return -EINVAL;
1325        }
1326
1327        hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1328        if (!hw)
1329                return -ENOMEM;
1330
1331        DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1332                info->var.yres, info->var.bits_per_pixel);
1333
1334        /*
1335         * Disable VCO prior to timing register change.
1336         */
1337        OUTREG(DPLL_A, INREG(DPLL_A) & ~DPLL_VCO_ENABLE);
1338
1339        intelfb_blank(FB_BLANK_POWERDOWN, info);
1340
1341        if (ACCEL(dinfo, info))
1342                intelfbhw_2d_stop(dinfo);
1343
1344        memcpy(hw, &dinfo->save_state, sizeof(*hw));
1345        if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1346                goto invalid_mode;
1347        if (intelfbhw_program_mode(dinfo, hw, 0))
1348                goto invalid_mode;
1349
1350#if REGDUMP > 0
1351        intelfbhw_read_hw_state(dinfo, hw, 0);
1352        intelfbhw_print_hw_state(dinfo, hw);
1353#endif
1354
1355        update_dinfo(dinfo, &info->var);
1356
1357        if (ACCEL(dinfo, info))
1358                intelfbhw_2d_start(dinfo);
1359
1360        intelfb_pan_display(&info->var, info);
1361
1362        intelfb_blank(FB_BLANK_UNBLANK, info);
1363
1364        if (ACCEL(dinfo, info)) {
1365                info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1366                FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1367                FBINFO_HWACCEL_IMAGEBLIT;
1368        } else
1369                info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1370
1371        kfree(hw);
1372        return 0;
1373invalid_mode:
1374        kfree(hw);
1375        return -EINVAL;
1376}
1377
1378static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1379                             unsigned blue, unsigned transp,
1380                             struct fb_info *info)
1381{
1382        struct intelfb_info *dinfo = GET_DINFO(info);
1383
1384#if VERBOSE > 0
1385        DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1386#endif
1387
1388        if (regno > 255)
1389                return 1;
1390
1391        if (dinfo->depth == 8) {
1392                red >>= 8;
1393                green >>= 8;
1394                blue >>= 8;
1395
1396                intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1397                                    transp);
1398        }
1399
1400        if (regno < 16) {
1401                switch (dinfo->depth) {
1402                case 15:
1403                        dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1404                                ((green & 0xf800) >>  6) |
1405                                ((blue & 0xf800) >> 11);
1406                        break;
1407                case 16:
1408                        dinfo->pseudo_palette[regno] = (red & 0xf800) |
1409                                ((green & 0xfc00) >>  5) |
1410                                ((blue  & 0xf800) >> 11);
1411                        break;
1412                case 24:
1413                        dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1414                                (green & 0xff00) |
1415                                ((blue  & 0xff00) >> 8);
1416                        break;
1417                }
1418        }
1419
1420        return 0;
1421}
1422
1423static int intelfb_blank(int blank, struct fb_info *info)
1424{
1425        intelfbhw_do_blank(blank, info);
1426        return 0;
1427}
1428
1429static int intelfb_pan_display(struct fb_var_screeninfo *var,
1430                               struct fb_info *info)
1431{
1432        intelfbhw_pan_display(var, info);
1433        return 0;
1434}
1435
1436/* When/if we have our own ioctls. */
1437static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1438                         unsigned long arg)
1439{
1440        int retval = 0;
1441        struct intelfb_info *dinfo = GET_DINFO(info);
1442        u32 pipe = 0;
1443
1444        switch (cmd) {
1445                case FBIO_WAITFORVSYNC:
1446                        if (get_user(pipe, (__u32 __user *)arg))
1447                                return -EFAULT;
1448
1449                        retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1450                        break;
1451                default:
1452                        break;
1453        }
1454
1455        return retval;
1456}
1457
1458static void intelfb_fillrect (struct fb_info *info,
1459                              const struct fb_fillrect *rect)
1460{
1461        struct intelfb_info *dinfo = GET_DINFO(info);
1462        u32 rop, color;
1463
1464#if VERBOSE > 0
1465        DBG_MSG("intelfb_fillrect\n");
1466#endif
1467
1468        if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1469                cfb_fillrect(info, rect);
1470                return;
1471        }
1472
1473        if (rect->rop == ROP_COPY)
1474                rop = PAT_ROP_GXCOPY;
1475        else /* ROP_XOR */
1476                rop = PAT_ROP_GXXOR;
1477
1478        if (dinfo->depth != 8)
1479                color = dinfo->pseudo_palette[rect->color];
1480        else
1481                color = rect->color;
1482
1483        intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1484                              rect->width, rect->height, color,
1485                              dinfo->pitch, info->var.bits_per_pixel,
1486                              rop);
1487}
1488
1489static void intelfb_copyarea(struct fb_info *info,
1490                             const struct fb_copyarea *region)
1491{
1492        struct intelfb_info *dinfo = GET_DINFO(info);
1493
1494#if VERBOSE > 0
1495        DBG_MSG("intelfb_copyarea\n");
1496#endif
1497
1498        if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1499                cfb_copyarea(info, region);
1500                return;
1501        }
1502
1503        intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1504                            region->dy, region->width, region->height,
1505                            dinfo->pitch, info->var.bits_per_pixel);
1506}
1507
1508static void intelfb_imageblit(struct fb_info *info,
1509                              const struct fb_image *image)
1510{
1511        struct intelfb_info *dinfo = GET_DINFO(info);
1512        u32 fgcolor, bgcolor;
1513
1514#if VERBOSE > 0
1515        DBG_MSG("intelfb_imageblit\n");
1516#endif
1517
1518        if (!ACCEL(dinfo, info) || dinfo->depth == 4
1519            || image->depth != 1) {
1520                cfb_imageblit(info, image);
1521                return;
1522        }
1523
1524        if (dinfo->depth != 8) {
1525                fgcolor = dinfo->pseudo_palette[image->fg_color];
1526                bgcolor = dinfo->pseudo_palette[image->bg_color];
1527        } else {
1528                fgcolor = image->fg_color;
1529                bgcolor = image->bg_color;
1530        }
1531
1532        if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1533                                    image->height, image->data,
1534                                    image->dx, image->dy,
1535                                    dinfo->pitch, info->var.bits_per_pixel)) {
1536                cfb_imageblit(info, image);
1537                return;
1538        }
1539}
1540
1541static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1542{
1543        struct intelfb_info *dinfo = GET_DINFO(info);
1544        u32 physical;
1545#if VERBOSE > 0
1546        DBG_MSG("intelfb_cursor\n");
1547#endif
1548
1549        if (!dinfo->hwcursor)
1550                return -ENODEV;
1551
1552        intelfbhw_cursor_hide(dinfo);
1553
1554        /* If XFree killed the cursor - restore it */
1555        physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1556                   (dinfo->cursor.offset << 12);
1557
1558        if (INREG(CURSOR_A_BASEADDR) != physical) {
1559                u32 fg, bg;
1560
1561                DBG_MSG("the cursor was killed - restore it !!\n");
1562                DBG_MSG("size %d, %d   pos %d, %d\n",
1563                        cursor->image.width, cursor->image.height,
1564                        cursor->image.dx, cursor->image.dy);
1565
1566                intelfbhw_cursor_init(dinfo);
1567                intelfbhw_cursor_reset(dinfo);
1568                intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1569                                        cursor->image.dy);
1570
1571                if (dinfo->depth != 8) {
1572                        fg =dinfo->pseudo_palette[cursor->image.fg_color];
1573                        bg =dinfo->pseudo_palette[cursor->image.bg_color];
1574                } else {
1575                        fg = cursor->image.fg_color;
1576                        bg = cursor->image.bg_color;
1577                }
1578                intelfbhw_cursor_setcolor(dinfo, bg, fg);
1579                intelfbhw_cursor_load(dinfo, cursor->image.width,
1580                                      cursor->image.height,
1581                                      dinfo->cursor_src);
1582
1583                if (cursor->enable)
1584                        intelfbhw_cursor_show(dinfo);
1585                return 0;
1586        }
1587
1588        if (cursor->set & FB_CUR_SETPOS) {
1589                u32 dx, dy;
1590
1591                dx = cursor->image.dx - info->var.xoffset;
1592                dy = cursor->image.dy - info->var.yoffset;
1593
1594                intelfbhw_cursor_setpos(dinfo, dx, dy);
1595        }
1596
1597        if (cursor->set & FB_CUR_SETSIZE) {
1598                if (cursor->image.width > 64 || cursor->image.height > 64)
1599                        return -ENXIO;
1600
1601                intelfbhw_cursor_reset(dinfo);
1602        }
1603
1604        if (cursor->set & FB_CUR_SETCMAP) {
1605                u32 fg, bg;
1606
1607                if (dinfo->depth != 8) {
1608                        fg = dinfo->pseudo_palette[cursor->image.fg_color];
1609                        bg = dinfo->pseudo_palette[cursor->image.bg_color];
1610                } else {
1611                        fg = cursor->image.fg_color;
1612                        bg = cursor->image.bg_color;
1613                }
1614
1615                intelfbhw_cursor_setcolor(dinfo, bg, fg);
1616        }
1617
1618        if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1619                u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1620                u32 size = s_pitch * cursor->image.height;
1621                u8 *dat = (u8 *) cursor->image.data;
1622                u8 *msk = (u8 *) cursor->mask;
1623                u8 src[64];
1624                u32 i;
1625
1626                if (cursor->image.depth != 1)
1627                        return -ENXIO;
1628
1629                switch (cursor->rop) {
1630                case ROP_XOR:
1631                        for (i = 0; i < size; i++)
1632                                src[i] = dat[i] ^ msk[i];
1633                        break;
1634                case ROP_COPY:
1635                default:
1636                        for (i = 0; i < size; i++)
1637                                src[i] = dat[i] & msk[i];
1638                        break;
1639                }
1640
1641                /* save the bitmap to restore it when XFree will
1642                   make the cursor dirty */
1643                memcpy(dinfo->cursor_src, src, size);
1644
1645                intelfbhw_cursor_load(dinfo, cursor->image.width,
1646                                      cursor->image.height, src);
1647        }
1648
1649        if (cursor->enable)
1650                intelfbhw_cursor_show(dinfo);
1651
1652        return 0;
1653}
1654
1655static int intelfb_sync(struct fb_info *info)
1656{
1657        struct intelfb_info *dinfo = GET_DINFO(info);
1658
1659#if VERBOSE > 0
1660        DBG_MSG("intelfb_sync\n");
1661#endif
1662
1663        if (dinfo->ring_lockup)
1664                return 0;
1665
1666        intelfbhw_do_sync(dinfo);
1667        return 0;
1668}
1669
1670