checkpatch: Warn on code with 6+ tab indentation
[~shefty/rdma-dev.git] / 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_854, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_854 },
186         { 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 },
187         { 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 },
188         { 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 },
189         { 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 },
190         { 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 },
191         { 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 },
192         { 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 },
193         { 0, }
194 };
195
196 /* Global data */
197 static int num_registered = 0;
198
199 /* fb ops */
200 static struct fb_ops intel_fb_ops = {
201         .owner =                THIS_MODULE,
202         .fb_open =              intelfb_open,
203         .fb_release =           intelfb_release,
204         .fb_check_var =         intelfb_check_var,
205         .fb_set_par =           intelfb_set_par,
206         .fb_setcolreg =         intelfb_setcolreg,
207         .fb_blank =             intelfb_blank,
208         .fb_pan_display =       intelfb_pan_display,
209         .fb_fillrect  =         intelfb_fillrect,
210         .fb_copyarea  =         intelfb_copyarea,
211         .fb_imageblit =         intelfb_imageblit,
212         .fb_cursor =            intelfb_cursor,
213         .fb_sync =              intelfb_sync,
214         .fb_ioctl =             intelfb_ioctl
215 };
216
217 /* PCI driver module table */
218 static struct pci_driver intelfb_driver = {
219         .name =         "intelfb",
220         .id_table =     intelfb_pci_table,
221         .probe =        intelfb_pci_register,
222         .remove =       __devexit_p(intelfb_pci_unregister)
223 };
224
225 /* Module description/parameters */
226 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
227               "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
228 MODULE_DESCRIPTION("Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS
229                    " chipsets");
230 MODULE_LICENSE("Dual BSD/GPL");
231 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
232
233 static bool accel       = 1;
234 static int vram         = 4;
235 static bool hwcursor    = 0;
236 static bool mtrr        = 1;
237 static bool fixed       = 0;
238 static bool noinit      = 0;
239 static bool noregister  = 0;
240 static bool probeonly   = 0;
241 static bool idonly      = 0;
242 static int bailearly    = 0;
243 static int voffset      = 48;
244 static char *mode       = NULL;
245
246 module_param(accel, bool, S_IRUGO);
247 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
248 module_param(vram, int, S_IRUGO);
249 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
250 module_param(voffset, int, S_IRUGO);
251 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
252 module_param(hwcursor, bool, S_IRUGO);
253 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
254 module_param(mtrr, bool, S_IRUGO);
255 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
256 module_param(fixed, bool, S_IRUGO);
257 MODULE_PARM_DESC(fixed, "Disable mode switching");
258 module_param(noinit, bool, 0);
259 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
260 module_param(noregister, bool, 0);
261 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
262 module_param(probeonly, bool, 0);
263 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
264 module_param(idonly, bool, 0);
265 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
266 module_param(bailearly, int, 0);
267 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
268 module_param(mode, charp, S_IRUGO);
269 MODULE_PARM_DESC(mode,
270                  "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
271
272 #ifndef MODULE
273 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
274 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
275 #define OPT_STRVAL(opt, name) (opt + strlen(name))
276
277 static __inline__ char * get_opt_string(const char *this_opt, const char *name)
278 {
279         const char *p;
280         int i;
281         char *ret;
282
283         p = OPT_STRVAL(this_opt, name);
284         i = 0;
285         while (p[i] && p[i] != ' ' && p[i] != ',')
286                 i++;
287         ret = kmalloc(i + 1, GFP_KERNEL);
288         if (ret) {
289                 strncpy(ret, p, i);
290                 ret[i] = '\0';
291         }
292         return ret;
293 }
294
295 static __inline__ int get_opt_int(const char *this_opt, const char *name,
296                                   int *ret)
297 {
298         if (!ret)
299                 return 0;
300
301         if (!OPT_EQUAL(this_opt, name))
302                 return 0;
303
304         *ret = OPT_INTVAL(this_opt, name);
305         return 1;
306 }
307
308 static __inline__ int get_opt_bool(const char *this_opt, const char *name,
309                                    int *ret)
310 {
311         if (!ret)
312                 return 0;
313
314         if (OPT_EQUAL(this_opt, name)) {
315                 if (this_opt[strlen(name)] == '=')
316                         *ret = simple_strtoul(this_opt + strlen(name) + 1,
317                                               NULL, 0);
318                 else
319                         *ret = 1;
320         } else {
321                 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
322                         *ret = 0;
323                 else
324                         return 0;
325         }
326         return 1;
327 }
328
329 static int __init intelfb_setup(char *options)
330 {
331         char *this_opt;
332
333         DBG_MSG("intelfb_setup\n");
334
335         if (!options || !*options) {
336                 DBG_MSG("no options\n");
337                 return 0;
338         } else
339                 DBG_MSG("options: %s\n", options);
340
341         /*
342          * These are the built-in options analogous to the module parameters
343          * defined above.
344          *
345          * The syntax is:
346          *
347          *    video=intelfb:[mode][,<param>=<val>] ...
348          *
349          * e.g.,
350          *
351          *    video=intelfb:1024x768-16@75,accel=0
352          */
353
354         while ((this_opt = strsep(&options, ","))) {
355                 if (!*this_opt)
356                         continue;
357                 if (get_opt_bool(this_opt, "accel", &accel))
358                         ;
359                 else if (get_opt_int(this_opt, "vram", &vram))
360                         ;
361                 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
362                         ;
363                 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
364                         ;
365                 else if (get_opt_bool(this_opt, "fixed", &fixed))
366                         ;
367                 else if (get_opt_bool(this_opt, "init", &noinit))
368                         noinit = !noinit;
369                 else if (OPT_EQUAL(this_opt, "mode="))
370                         mode = get_opt_string(this_opt, "mode=");
371                 else
372                         mode = this_opt;
373         }
374
375         return 0;
376 }
377
378 #endif
379
380 static int __init intelfb_init(void)
381 {
382 #ifndef MODULE
383         char *option = NULL;
384 #endif
385
386         DBG_MSG("intelfb_init\n");
387
388         INF_MSG("Framebuffer driver for "
389                 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
390         INF_MSG("Version " INTELFB_VERSION "\n");
391
392         if (idonly)
393                 return -ENODEV;
394
395 #ifndef MODULE
396         if (fb_get_options("intelfb", &option))
397                 return -ENODEV;
398         intelfb_setup(option);
399 #endif
400
401         return pci_register_driver(&intelfb_driver);
402 }
403
404 static void __exit intelfb_exit(void)
405 {
406         DBG_MSG("intelfb_exit\n");
407         pci_unregister_driver(&intelfb_driver);
408 }
409
410 module_init(intelfb_init);
411 module_exit(intelfb_exit);
412
413 /***************************************************************
414  *                     mtrr support functions                  *
415  ***************************************************************/
416
417 #ifdef CONFIG_MTRR
418 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
419 {
420         dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
421                                    dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
422         if (dinfo->mtrr_reg < 0) {
423                 ERR_MSG("unable to set MTRR\n");
424                 return;
425         }
426         dinfo->has_mtrr = 1;
427 }
428 static inline void unset_mtrr(struct intelfb_info *dinfo)
429 {
430         if (dinfo->has_mtrr)
431                 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
432                          dinfo->aperture.size);
433 }
434 #else
435 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
436
437 #define unset_mtrr(x) do { } while (0)
438 #endif /* CONFIG_MTRR */
439
440 /***************************************************************
441  *                        driver init / cleanup                *
442  ***************************************************************/
443
444 static void cleanup(struct intelfb_info *dinfo)
445 {
446         DBG_MSG("cleanup\n");
447
448         if (!dinfo)
449                 return;
450
451         intelfbhw_disable_irq(dinfo);
452
453         fb_dealloc_cmap(&dinfo->info->cmap);
454         kfree(dinfo->info->pixmap.addr);
455
456         if (dinfo->registered)
457                 unregister_framebuffer(dinfo->info);
458
459         unset_mtrr(dinfo);
460
461         if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
462                 agp_unbind_memory(dinfo->gtt_fb_mem);
463                 agp_free_memory(dinfo->gtt_fb_mem);
464         }
465         if (dinfo->gtt_cursor_mem) {
466                 agp_unbind_memory(dinfo->gtt_cursor_mem);
467                 agp_free_memory(dinfo->gtt_cursor_mem);
468         }
469         if (dinfo->gtt_ring_mem) {
470                 agp_unbind_memory(dinfo->gtt_ring_mem);
471                 agp_free_memory(dinfo->gtt_ring_mem);
472         }
473
474 #ifdef CONFIG_FB_INTEL_I2C
475         /* un-register I2C bus */
476         intelfb_delete_i2c_busses(dinfo);
477 #endif
478
479         if (dinfo->mmio_base)
480                 iounmap((void __iomem *)dinfo->mmio_base);
481         if (dinfo->aperture.virtual)
482                 iounmap((void __iomem *)dinfo->aperture.virtual);
483
484         if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
485                 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
486         if (dinfo->flag & INTELFB_FB_ACQUIRED)
487                 release_mem_region(dinfo->aperture.physical,
488                                    dinfo->aperture.size);
489         framebuffer_release(dinfo->info);
490 }
491
492 #define bailout(dinfo) do {                                             \
493         DBG_MSG("bailout\n");                                           \
494         cleanup(dinfo);                                                 \
495         INF_MSG("Not going to register framebuffer, exiting...\n");     \
496         return -ENODEV;                                                 \
497 } while (0)
498
499
500 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
501                                           const struct pci_device_id *ent)
502 {
503         struct fb_info *info;
504         struct intelfb_info *dinfo;
505         int i, err, dvo;
506         int aperture_size, stolen_size;
507         struct agp_kern_info gtt_info;
508         int agp_memtype;
509         const char *s;
510         struct agp_bridge_data *bridge;
511         int aperture_bar = 0;
512         int mmio_bar = 1;
513         int offset;
514
515         DBG_MSG("intelfb_pci_register\n");
516
517         num_registered++;
518         if (num_registered != 1) {
519                 ERR_MSG("Attempted to register %d devices "
520                         "(should be only 1).\n", num_registered);
521                 return -ENODEV;
522         }
523
524         info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
525         if (!info) {
526                 ERR_MSG("Could not allocate memory for intelfb_info.\n");
527                 return -ENODEV;
528         }
529         if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
530                 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
531                 goto err_out_cmap;
532                 return -ENODEV;
533         }
534
535         dinfo = info->par;
536         dinfo->info  = info;
537         dinfo->fbops = &intel_fb_ops;
538         dinfo->pdev  = pdev;
539
540         /* Reserve pixmap space. */
541         info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
542         if (info->pixmap.addr == NULL) {
543                 ERR_MSG("Cannot reserve pixmap memory.\n");
544                 goto err_out_pixmap;
545         }
546
547         /* set early this option because it could be changed by tv encoder
548            driver */
549         dinfo->fixed_mode = fixed;
550
551         /* Enable device. */
552         if ((err = pci_enable_device(pdev))) {
553                 ERR_MSG("Cannot enable device.\n");
554                 cleanup(dinfo);
555                 return -ENODEV;
556         }
557
558         /* Set base addresses. */
559         if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
560             (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
561             (ent->device == PCI_DEVICE_ID_INTEL_945G)  ||
562             (ent->device == PCI_DEVICE_ID_INTEL_945GM) ||
563             (ent->device == PCI_DEVICE_ID_INTEL_945GME) ||
564             (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
565             (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
566
567                 aperture_bar = 2;
568                 mmio_bar = 0;
569         }
570         dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
571         dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
572         dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
573         DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
574                 (unsigned long long)pci_resource_start(pdev, aperture_bar),
575                 (unsigned long long)pci_resource_len(pdev, aperture_bar),
576                 (unsigned long long)pci_resource_start(pdev, mmio_bar),
577                 (unsigned long long)pci_resource_len(pdev, mmio_bar));
578
579         /* Reserve the fb and MMIO regions */
580         if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
581                                 INTELFB_MODULE_NAME)) {
582                 ERR_MSG("Cannot reserve FB region.\n");
583                 cleanup(dinfo);
584                 return -ENODEV;
585         }
586
587         dinfo->flag |= INTELFB_FB_ACQUIRED;
588
589         if (!request_mem_region(dinfo->mmio_base_phys,
590                                 INTEL_REG_SIZE,
591                                 INTELFB_MODULE_NAME)) {
592                 ERR_MSG("Cannot reserve MMIO region.\n");
593                 cleanup(dinfo);
594                 return -ENODEV;
595         }
596
597         dinfo->flag |= INTELFB_MMIO_ACQUIRED;
598
599         /* Get the chipset info. */
600         dinfo->pci_chipset = pdev->device;
601
602         if (intelfbhw_get_chipset(pdev, dinfo)) {
603                 cleanup(dinfo);
604                 return -ENODEV;
605         }
606
607         if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
608                 cleanup(dinfo);
609                 return -ENODEV;
610         }
611
612         INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
613                 "stolen memory %dkB\n",
614                 pdev->bus->number, PCI_SLOT(pdev->devfn),
615                 PCI_FUNC(pdev->devfn), dinfo->name,
616                 BtoMB(aperture_size), BtoKB(stolen_size));
617
618         /* Set these from the options. */
619         dinfo->accel    = accel;
620         dinfo->hwcursor = hwcursor;
621
622         if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
623                 INF_MSG("Acceleration is not supported for the %s chipset.\n",
624                         dinfo->name);
625                 dinfo->accel = 0;
626         }
627
628         /* Framebuffer parameters - Use all the stolen memory if >= vram */
629         if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
630                 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
631                 dinfo->fbmem_gart = 0;
632         } else {
633                 dinfo->fb.size =  MB(vram);
634                 dinfo->fbmem_gart = 1;
635         }
636
637         /* Allocate space for the ring buffer and HW cursor if enabled. */
638         if (dinfo->accel) {
639                 dinfo->ring.size = RINGBUFFER_SIZE;
640                 dinfo->ring_tail_mask = dinfo->ring.size - 1;
641         }
642         if (dinfo->hwcursor)
643                 dinfo->cursor.size = HW_CURSOR_SIZE;
644
645         /* Use agpgart to manage the GATT */
646         if (!(bridge = agp_backend_acquire(pdev))) {
647                 ERR_MSG("cannot acquire agp\n");
648                 cleanup(dinfo);
649                 return -ENODEV;
650         }
651
652         /* get the current gatt info */
653         if (agp_copy_info(bridge, &gtt_info)) {
654                 ERR_MSG("cannot get agp info\n");
655                 agp_backend_release(bridge);
656                 cleanup(dinfo);
657                 return -ENODEV;
658         }
659
660         if (MB(voffset) < stolen_size)
661                 offset = (stolen_size >> 12);
662         else
663                 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
664
665         /* set the mem offsets - set them after the already used pages */
666         if (dinfo->accel)
667                 dinfo->ring.offset = offset + gtt_info.current_memory;
668         if (dinfo->hwcursor)
669                 dinfo->cursor.offset = offset +
670                         + gtt_info.current_memory + (dinfo->ring.size >> 12);
671         if (dinfo->fbmem_gart)
672                 dinfo->fb.offset = offset +
673                         + gtt_info.current_memory + (dinfo->ring.size >> 12)
674                         + (dinfo->cursor.size >> 12);
675
676         /* Allocate memories (which aren't stolen) */
677         /* Map the fb and MMIO regions */
678         /* ioremap only up to the end of used aperture */
679         dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
680                 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
681                  + dinfo->fb.size);
682         if (!dinfo->aperture.virtual) {
683                 ERR_MSG("Cannot remap FB region.\n");
684                 cleanup(dinfo);
685                 return -ENODEV;
686         }
687
688         dinfo->mmio_base =
689                 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
690                                               INTEL_REG_SIZE);
691         if (!dinfo->mmio_base) {
692                 ERR_MSG("Cannot remap MMIO region.\n");
693                 cleanup(dinfo);
694                 return -ENODEV;
695         }
696
697         if (dinfo->accel) {
698                 if (!(dinfo->gtt_ring_mem =
699                       agp_allocate_memory(bridge, dinfo->ring.size >> 12,
700                                           AGP_NORMAL_MEMORY))) {
701                         ERR_MSG("cannot allocate ring buffer memory\n");
702                         agp_backend_release(bridge);
703                         cleanup(dinfo);
704                         return -ENOMEM;
705                 }
706                 if (agp_bind_memory(dinfo->gtt_ring_mem,
707                                     dinfo->ring.offset)) {
708                         ERR_MSG("cannot bind ring buffer memory\n");
709                         agp_backend_release(bridge);
710                         cleanup(dinfo);
711                         return -EBUSY;
712                 }
713                 dinfo->ring.physical = dinfo->aperture.physical
714                         + (dinfo->ring.offset << 12);
715                 dinfo->ring.virtual  = dinfo->aperture.virtual
716                         + (dinfo->ring.offset << 12);
717                 dinfo->ring_head = 0;
718         }
719         if (dinfo->hwcursor) {
720                 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
721                         : AGP_NORMAL_MEMORY;
722                 if (!(dinfo->gtt_cursor_mem =
723                       agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
724                                           agp_memtype))) {
725                         ERR_MSG("cannot allocate cursor memory\n");
726                         agp_backend_release(bridge);
727                         cleanup(dinfo);
728                         return -ENOMEM;
729                 }
730                 if (agp_bind_memory(dinfo->gtt_cursor_mem,
731                                     dinfo->cursor.offset)) {
732                         ERR_MSG("cannot bind cursor memory\n");
733                         agp_backend_release(bridge);
734                         cleanup(dinfo);
735                         return -EBUSY;
736                 }
737                 if (dinfo->mobile)
738                         dinfo->cursor.physical
739                                 = dinfo->gtt_cursor_mem->physical;
740                 else
741                         dinfo->cursor.physical = dinfo->aperture.physical
742                                 + (dinfo->cursor.offset << 12);
743                 dinfo->cursor.virtual = dinfo->aperture.virtual
744                         + (dinfo->cursor.offset << 12);
745         }
746         if (dinfo->fbmem_gart) {
747                 if (!(dinfo->gtt_fb_mem =
748                       agp_allocate_memory(bridge, dinfo->fb.size >> 12,
749                                           AGP_NORMAL_MEMORY))) {
750                         WRN_MSG("cannot allocate framebuffer memory - use "
751                                 "the stolen one\n");
752                         dinfo->fbmem_gart = 0;
753                 }
754                 if (agp_bind_memory(dinfo->gtt_fb_mem,
755                                     dinfo->fb.offset)) {
756                         WRN_MSG("cannot bind framebuffer memory - use "
757                                 "the stolen one\n");
758                         dinfo->fbmem_gart = 0;
759                 }
760         }
761
762         /* update framebuffer memory parameters */
763         if (!dinfo->fbmem_gart)
764                 dinfo->fb.offset = 0;   /* starts at offset 0 */
765         dinfo->fb.physical = dinfo->aperture.physical
766                 + (dinfo->fb.offset << 12);
767         dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
768         dinfo->fb_start = dinfo->fb.offset << 12;
769
770         /* release agpgart */
771         agp_backend_release(bridge);
772
773         if (mtrr)
774                 set_mtrr(dinfo);
775
776         DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
777                 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
778                 dinfo->fb.virtual);
779         DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
780                 dinfo->mmio_base_phys, INTEL_REG_SIZE,
781                 dinfo->mmio_base);
782         DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
783                 dinfo->ring.physical, dinfo->ring.size,
784                 dinfo->ring.virtual);
785         DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
786                 dinfo->cursor.physical, dinfo->cursor.size,
787                 dinfo->cursor.virtual, dinfo->cursor.offset,
788                 dinfo->cursor.physical);
789
790         DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
791                 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
792         DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
793
794         if (probeonly)
795                 bailout(dinfo);
796
797         /*
798          * Check if the LVDS port or any DVO ports are enabled.  If so,
799          * don't allow mode switching
800          */
801         dvo = intelfbhw_check_non_crt(dinfo);
802         if (dvo) {
803                 dinfo->fixed_mode = 1;
804                 WRN_MSG("Non-CRT device is enabled ( ");
805                 i = 0;
806                 while (dvo) {
807                         if (dvo & 1) {
808                                 s = intelfbhw_dvo_to_string(1 << i);
809                                 if (s)
810                                         printk("%s ", s);
811                         }
812                         dvo >>= 1;
813                         ++i;
814                 }
815                 printk(").  Disabling mode switching.\n");
816         }
817
818         if (bailearly == 1)
819                 bailout(dinfo);
820
821         if (FIXED_MODE(dinfo) &&
822             screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
823                 ERR_MSG("Video mode must be programmed at boot time.\n");
824                 cleanup(dinfo);
825                 return -ENODEV;
826         }
827
828         if (bailearly == 2)
829                 bailout(dinfo);
830
831         /* Initialise dinfo and related data. */
832         /* If an initial mode was programmed at boot time, get its details. */
833         if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
834                 get_initial_mode(dinfo);
835
836         if (bailearly == 3)
837                 bailout(dinfo);
838
839         if (FIXED_MODE(dinfo))  /* remap fb address */
840                 update_dinfo(dinfo, &dinfo->initial_var);
841
842         if (bailearly == 4)
843                 bailout(dinfo);
844
845
846         if (intelfb_set_fbinfo(dinfo)) {
847                 cleanup(dinfo);
848                 return -ENODEV;
849         }
850
851         if (bailearly == 5)
852                 bailout(dinfo);
853
854 #ifdef CONFIG_FB_INTEL_I2C
855         /* register I2C bus */
856         intelfb_create_i2c_busses(dinfo);
857 #endif
858
859         if (bailearly == 6)
860                 bailout(dinfo);
861
862         pci_set_drvdata(pdev, dinfo);
863
864         /* Save the initial register state. */
865         i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
866                                     bailearly > 6 ? bailearly - 6 : 0);
867         if (i != 0) {
868                 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
869                 bailout(dinfo);
870         }
871
872         intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
873
874         if (bailearly == 18)
875                 bailout(dinfo);
876
877         /* read active pipe */
878         dinfo->pipe = intelfbhw_active_pipe(&dinfo->save_state);
879
880         /* Cursor initialisation */
881         if (dinfo->hwcursor) {
882                 intelfbhw_cursor_init(dinfo);
883                 intelfbhw_cursor_reset(dinfo);
884         }
885
886         if (bailearly == 19)
887                 bailout(dinfo);
888
889         /* 2d acceleration init */
890         if (dinfo->accel)
891                 intelfbhw_2d_start(dinfo);
892
893         if (bailearly == 20)
894                 bailout(dinfo);
895
896         if (noregister)
897                 bailout(dinfo);
898
899         if (register_framebuffer(dinfo->info) < 0) {
900                 ERR_MSG("Cannot register framebuffer.\n");
901                 cleanup(dinfo);
902                 return -ENODEV;
903         }
904
905         dinfo->registered = 1;
906         dinfo->open = 0;
907
908         init_waitqueue_head(&dinfo->vsync.wait);
909         spin_lock_init(&dinfo->int_lock);
910         dinfo->irq_flags = 0;
911         dinfo->vsync.pan_display = 0;
912         dinfo->vsync.pan_offset = 0;
913
914         return 0;
915
916 err_out_pixmap:
917         fb_dealloc_cmap(&info->cmap);
918 err_out_cmap:
919         framebuffer_release(info);
920         return -ENODEV;
921 }
922
923 static void __devexit
924 intelfb_pci_unregister(struct pci_dev *pdev)
925 {
926         struct intelfb_info *dinfo = pci_get_drvdata(pdev);
927
928         DBG_MSG("intelfb_pci_unregister\n");
929
930         if (!dinfo)
931                 return;
932
933         cleanup(dinfo);
934
935         pci_set_drvdata(pdev, NULL);
936 }
937
938 /***************************************************************
939  *                       helper functions                      *
940  ***************************************************************/
941
942 int __inline__ intelfb_var_to_depth(const struct fb_var_screeninfo *var)
943 {
944         DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
945                 var->bits_per_pixel, var->green.length);
946
947         switch (var->bits_per_pixel) {
948         case 16:
949                 return (var->green.length == 6) ? 16 : 15;
950         case 32:
951                 return 24;
952         default:
953                 return var->bits_per_pixel;
954         }
955 }
956
957
958 static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
959 {
960         int xtot = var->xres + var->left_margin + var->right_margin +
961                    var->hsync_len;
962         int ytot = var->yres + var->upper_margin + var->lower_margin +
963                    var->vsync_len;
964
965         return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
966 }
967
968 /***************************************************************
969  *                Various intialisation functions              *
970  ***************************************************************/
971
972 static void __devinit get_initial_mode(struct intelfb_info *dinfo)
973 {
974         struct fb_var_screeninfo *var;
975         int xtot, ytot;
976
977         DBG_MSG("get_initial_mode\n");
978
979         dinfo->initial_vga = 1;
980         dinfo->initial_fb_base = screen_info.lfb_base;
981         dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
982         dinfo->initial_pitch = screen_info.lfb_linelength;
983
984         var = &dinfo->initial_var;
985         memset(var, 0, sizeof(*var));
986         var->xres = screen_info.lfb_width;
987         var->yres = screen_info.lfb_height;
988         var->bits_per_pixel = screen_info.lfb_depth;
989         switch (screen_info.lfb_depth) {
990         case 15:
991                 var->bits_per_pixel = 16;
992                 break;
993         case 24:
994                 var->bits_per_pixel = 32;
995                 break;
996         }
997
998         DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
999                 dinfo->initial_fb_base, dinfo->initial_video_ram,
1000                 BtoKB(dinfo->initial_video_ram));
1001
1002         DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
1003                 var->xres, var->yres, var->bits_per_pixel,
1004                 dinfo->initial_pitch);
1005
1006         /* Dummy timing values (assume 60Hz) */
1007         var->left_margin = (var->xres / 8) & 0xf8;
1008         var->right_margin = 32;
1009         var->upper_margin = 16;
1010         var->lower_margin = 4;
1011         var->hsync_len = (var->xres / 8) & 0xf8;
1012         var->vsync_len = 4;
1013
1014         xtot = var->xres + var->left_margin +
1015                 var->right_margin + var->hsync_len;
1016         ytot = var->yres + var->upper_margin +
1017                 var->lower_margin + var->vsync_len;
1018         var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1019
1020         var->height = -1;
1021         var->width = -1;
1022
1023         if (var->bits_per_pixel > 8) {
1024                 var->red.offset = screen_info.red_pos;
1025                 var->red.length = screen_info.red_size;
1026                 var->green.offset = screen_info.green_pos;
1027                 var->green.length = screen_info.green_size;
1028                 var->blue.offset = screen_info.blue_pos;
1029                 var->blue.length = screen_info.blue_size;
1030                 var->transp.offset = screen_info.rsvd_pos;
1031                 var->transp.length = screen_info.rsvd_size;
1032         } else {
1033                 var->red.length = 8;
1034                 var->green.length = 8;
1035                 var->blue.length = 8;
1036         }
1037 }
1038
1039 static int __devinit intelfb_init_var(struct intelfb_info *dinfo)
1040 {
1041         struct fb_var_screeninfo *var;
1042         int msrc = 0;
1043
1044         DBG_MSG("intelfb_init_var\n");
1045
1046         var = &dinfo->info->var;
1047         if (FIXED_MODE(dinfo)) {
1048                 memcpy(var, &dinfo->initial_var,
1049                        sizeof(struct fb_var_screeninfo));
1050                 msrc = 5;
1051         } else {
1052                 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1053                 u8 *edid_d = NULL;
1054
1055                 if (edid_s) {
1056                         edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1057
1058                         if (edid_d) {
1059                                 fb_edid_to_monspecs(edid_d,
1060                                                     &dinfo->info->monspecs);
1061                                 kfree(edid_d);
1062                         }
1063                 }
1064
1065                 if (mode) {
1066                         printk("intelfb: Looking for mode in private "
1067                                "database\n");
1068                         msrc = fb_find_mode(var, dinfo->info, mode,
1069                                             dinfo->info->monspecs.modedb,
1070                                             dinfo->info->monspecs.modedb_len,
1071                                             NULL, 0);
1072
1073                         if (msrc && msrc > 1) {
1074                                 printk("intelfb: No mode in private database, "
1075                                        "intelfb: looking for mode in global "
1076                                        "database ");
1077                                 msrc = fb_find_mode(var, dinfo->info, mode,
1078                                                     NULL, 0, NULL, 0);
1079
1080                                 if (msrc)
1081                                         msrc |= 8;
1082                         }
1083
1084                 }
1085
1086                 if (!msrc)
1087                         msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1088                                             NULL, 0, NULL, 0);
1089         }
1090
1091         if (!msrc) {
1092                 ERR_MSG("Cannot find a suitable video mode.\n");
1093                 return 1;
1094         }
1095
1096         INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1097                 var->bits_per_pixel, var_to_refresh(var));
1098
1099         DBG_MSG("Initial video mode is from %d.\n", msrc);
1100
1101 #if ALLOCATE_FOR_PANNING
1102         /* Allow use of half of the video ram for panning */
1103         var->xres_virtual = var->xres;
1104         var->yres_virtual =
1105                 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1106         if (var->yres_virtual < var->yres)
1107                 var->yres_virtual = var->yres;
1108 #else
1109         var->yres_virtual = var->yres;
1110 #endif
1111
1112         if (dinfo->accel)
1113                 var->accel_flags |= FB_ACCELF_TEXT;
1114         else
1115                 var->accel_flags &= ~FB_ACCELF_TEXT;
1116
1117         return 0;
1118 }
1119
1120 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo)
1121 {
1122         struct fb_info *info = dinfo->info;
1123
1124         DBG_MSG("intelfb_set_fbinfo\n");
1125
1126         info->flags = FBINFO_FLAG_DEFAULT;
1127         info->fbops = &intel_fb_ops;
1128         info->pseudo_palette = dinfo->pseudo_palette;
1129
1130         info->pixmap.size = 64*1024;
1131         info->pixmap.buf_align = 8;
1132         info->pixmap.access_align = 32;
1133         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1134
1135         if (intelfb_init_var(dinfo))
1136                 return 1;
1137
1138         info->pixmap.scan_align = 1;
1139         strcpy(info->fix.id, dinfo->name);
1140         info->fix.smem_start = dinfo->fb.physical;
1141         info->fix.smem_len = dinfo->fb.size;
1142         info->fix.type = FB_TYPE_PACKED_PIXELS;
1143         info->fix.type_aux = 0;
1144         info->fix.xpanstep = 8;
1145         info->fix.ypanstep = 1;
1146         info->fix.ywrapstep = 0;
1147         info->fix.mmio_start = dinfo->mmio_base_phys;
1148         info->fix.mmio_len = INTEL_REG_SIZE;
1149         info->fix.accel = FB_ACCEL_I830;
1150         update_dinfo(dinfo, &info->var);
1151
1152         return 0;
1153 }
1154
1155 /* Update dinfo to match the active video mode. */
1156 static void update_dinfo(struct intelfb_info *dinfo,
1157                          struct fb_var_screeninfo *var)
1158 {
1159         DBG_MSG("update_dinfo\n");
1160
1161         dinfo->bpp = var->bits_per_pixel;
1162         dinfo->depth = intelfb_var_to_depth(var);
1163         dinfo->xres = var->xres;
1164         dinfo->yres = var->xres;
1165         dinfo->pixclock = var->pixclock;
1166
1167         dinfo->info->fix.visual = dinfo->visual;
1168         dinfo->info->fix.line_length = dinfo->pitch;
1169
1170         switch (dinfo->bpp) {
1171         case 8:
1172                 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1173                 dinfo->pitch = var->xres_virtual;
1174                 break;
1175         case 16:
1176                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1177                 dinfo->pitch = var->xres_virtual * 2;
1178                 break;
1179         case 32:
1180                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1181                 dinfo->pitch = var->xres_virtual * 4;
1182                 break;
1183         }
1184
1185         /* Make sure the line length is a aligned correctly. */
1186         if (IS_I9XX(dinfo))
1187                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1188         else
1189                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1190
1191         if (FIXED_MODE(dinfo))
1192                 dinfo->pitch = dinfo->initial_pitch;
1193
1194         dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1195         dinfo->info->fix.line_length = dinfo->pitch;
1196         dinfo->info->fix.visual = dinfo->visual;
1197 }
1198
1199 /* fbops functions */
1200
1201 /***************************************************************
1202  *                       fbdev interface                       *
1203  ***************************************************************/
1204
1205 static int intelfb_open(struct fb_info *info, int user)
1206 {
1207         struct intelfb_info *dinfo = GET_DINFO(info);
1208
1209         if (user)
1210                 dinfo->open++;
1211
1212         return 0;
1213 }
1214
1215 static int intelfb_release(struct fb_info *info, int user)
1216 {
1217         struct intelfb_info *dinfo = GET_DINFO(info);
1218
1219         if (user) {
1220                 dinfo->open--;
1221                 msleep(1);
1222                 if (!dinfo->open)
1223                         intelfbhw_disable_irq(dinfo);
1224         }
1225
1226         return 0;
1227 }
1228
1229 static int intelfb_check_var(struct fb_var_screeninfo *var,
1230                              struct fb_info *info)
1231 {
1232         int change_var = 0;
1233         struct fb_var_screeninfo v;
1234         struct intelfb_info *dinfo;
1235         static int first = 1;
1236         int i;
1237         /* Good pitches to allow tiling.  Don't care about pitches < 1024. */
1238         static const int pitches[] = {
1239                 128 * 8,
1240                 128 * 16,
1241                 128 * 32,
1242                 128 * 64,
1243                 0
1244         };
1245
1246         DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1247
1248         dinfo = GET_DINFO(info);
1249
1250         /* update the pitch */
1251         if (intelfbhw_validate_mode(dinfo, var) != 0)
1252                 return -EINVAL;
1253
1254         v = *var;
1255
1256         for (i = 0; pitches[i] != 0; i++) {
1257                 if (pitches[i] >= v.xres_virtual) {
1258                         v.xres_virtual = pitches[i];
1259                         break;
1260                 }
1261         }
1262
1263         /* Check for a supported bpp. */
1264         if (v.bits_per_pixel <= 8)
1265                 v.bits_per_pixel = 8;
1266         else if (v.bits_per_pixel <= 16) {
1267                 if (v.bits_per_pixel == 16)
1268                         v.green.length = 6;
1269                 v.bits_per_pixel = 16;
1270         } else if (v.bits_per_pixel <= 32)
1271                 v.bits_per_pixel = 32;
1272         else
1273                 return -EINVAL;
1274
1275         change_var = ((info->var.xres != var->xres) ||
1276                       (info->var.yres != var->yres) ||
1277                       (info->var.xres_virtual != var->xres_virtual) ||
1278                       (info->var.yres_virtual != var->yres_virtual) ||
1279                       (info->var.bits_per_pixel != var->bits_per_pixel) ||
1280                       memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1281                       memcmp(&info->var.green, &var->green,
1282                              sizeof(var->green)) ||
1283                       memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1284
1285         if (FIXED_MODE(dinfo) &&
1286             (change_var ||
1287              var->yres_virtual > dinfo->initial_var.yres_virtual ||
1288              var->yres_virtual < dinfo->initial_var.yres ||
1289              var->xoffset || var->nonstd)) {
1290                 if (first) {
1291                         ERR_MSG("Changing the video mode is not supported.\n");
1292                         first = 0;
1293                 }
1294                 return -EINVAL;
1295         }
1296
1297         switch (intelfb_var_to_depth(&v)) {
1298         case 8:
1299                 v.red.offset = v.green.offset = v.blue.offset = 0;
1300                 v.red.length = v.green.length = v.blue.length = 8;
1301                 v.transp.offset = v.transp.length = 0;
1302                 break;
1303         case 15:
1304                 v.red.offset = 10;
1305                 v.green.offset = 5;
1306                 v.blue.offset = 0;
1307                 v.red.length = v.green.length = v.blue.length = 5;
1308                 v.transp.offset = v.transp.length = 0;
1309                 break;
1310         case 16:
1311                 v.red.offset = 11;
1312                 v.green.offset = 5;
1313                 v.blue.offset = 0;
1314                 v.red.length = 5;
1315                 v.green.length = 6;
1316                 v.blue.length = 5;
1317                 v.transp.offset = v.transp.length = 0;
1318                 break;
1319         case 24:
1320                 v.red.offset = 16;
1321                 v.green.offset = 8;
1322                 v.blue.offset = 0;
1323                 v.red.length = v.green.length = v.blue.length = 8;
1324                 v.transp.offset = v.transp.length = 0;
1325                 break;
1326         case 32:
1327                 v.red.offset = 16;
1328                 v.green.offset = 8;
1329                 v.blue.offset = 0;
1330                 v.red.length = v.green.length = v.blue.length = 8;
1331                 v.transp.offset = 24;
1332                 v.transp.length = 8;
1333                 break;
1334         }
1335
1336         if (v.xoffset < 0)
1337                 v.xoffset = 0;
1338         if (v.yoffset < 0)
1339                 v.yoffset = 0;
1340
1341         if (v.xoffset > v.xres_virtual - v.xres)
1342                 v.xoffset = v.xres_virtual - v.xres;
1343         if (v.yoffset > v.yres_virtual - v.yres)
1344                 v.yoffset = v.yres_virtual - v.yres;
1345
1346         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1347                           v.transp.msb_right = 0;
1348
1349         *var = v;
1350
1351         return 0;
1352 }
1353
1354 static int intelfb_set_par(struct fb_info *info)
1355 {
1356         struct intelfb_hwstate *hw;
1357         struct intelfb_info *dinfo = GET_DINFO(info);
1358
1359         if (FIXED_MODE(dinfo)) {
1360                 ERR_MSG("Changing the video mode is not supported.\n");
1361                 return -EINVAL;
1362         }
1363
1364         hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1365         if (!hw)
1366                 return -ENOMEM;
1367
1368         DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1369                 info->var.yres, info->var.bits_per_pixel);
1370
1371         /*
1372          * Disable VCO prior to timing register change.
1373          */
1374         OUTREG(DPLL_A, INREG(DPLL_A) & ~DPLL_VCO_ENABLE);
1375
1376         intelfb_blank(FB_BLANK_POWERDOWN, info);
1377
1378         if (ACCEL(dinfo, info))
1379                 intelfbhw_2d_stop(dinfo);
1380
1381         memcpy(hw, &dinfo->save_state, sizeof(*hw));
1382         if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1383                 goto invalid_mode;
1384         if (intelfbhw_program_mode(dinfo, hw, 0))
1385                 goto invalid_mode;
1386
1387 #if REGDUMP > 0
1388         intelfbhw_read_hw_state(dinfo, hw, 0);
1389         intelfbhw_print_hw_state(dinfo, hw);
1390 #endif
1391
1392         update_dinfo(dinfo, &info->var);
1393
1394         if (ACCEL(dinfo, info))
1395                 intelfbhw_2d_start(dinfo);
1396
1397         intelfb_pan_display(&info->var, info);
1398
1399         intelfb_blank(FB_BLANK_UNBLANK, info);
1400
1401         if (ACCEL(dinfo, info)) {
1402                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1403                 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1404                 FBINFO_HWACCEL_IMAGEBLIT;
1405         } else
1406                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1407
1408         kfree(hw);
1409         return 0;
1410 invalid_mode:
1411         kfree(hw);
1412         return -EINVAL;
1413 }
1414
1415 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1416                              unsigned blue, unsigned transp,
1417                              struct fb_info *info)
1418 {
1419         struct intelfb_info *dinfo = GET_DINFO(info);
1420
1421 #if VERBOSE > 0
1422         DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1423 #endif
1424
1425         if (regno > 255)
1426                 return 1;
1427
1428         if (dinfo->depth == 8) {
1429                 red >>= 8;
1430                 green >>= 8;
1431                 blue >>= 8;
1432
1433                 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1434                                     transp);
1435         }
1436
1437         if (regno < 16) {
1438                 switch (dinfo->depth) {
1439                 case 15:
1440                         dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1441                                 ((green & 0xf800) >>  6) |
1442                                 ((blue & 0xf800) >> 11);
1443                         break;
1444                 case 16:
1445                         dinfo->pseudo_palette[regno] = (red & 0xf800) |
1446                                 ((green & 0xfc00) >>  5) |
1447                                 ((blue  & 0xf800) >> 11);
1448                         break;
1449                 case 24:
1450                         dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1451                                 (green & 0xff00) |
1452                                 ((blue  & 0xff00) >> 8);
1453                         break;
1454                 }
1455         }
1456
1457         return 0;
1458 }
1459
1460 static int intelfb_blank(int blank, struct fb_info *info)
1461 {
1462         intelfbhw_do_blank(blank, info);
1463         return 0;
1464 }
1465
1466 static int intelfb_pan_display(struct fb_var_screeninfo *var,
1467                                struct fb_info *info)
1468 {
1469         intelfbhw_pan_display(var, info);
1470         return 0;
1471 }
1472
1473 /* When/if we have our own ioctls. */
1474 static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1475                          unsigned long arg)
1476 {
1477         int retval = 0;
1478         struct intelfb_info *dinfo = GET_DINFO(info);
1479         u32 pipe = 0;
1480
1481         switch (cmd) {
1482                 case FBIO_WAITFORVSYNC:
1483                         if (get_user(pipe, (__u32 __user *)arg))
1484                                 return -EFAULT;
1485
1486                         retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1487                         break;
1488                 default:
1489                         break;
1490         }
1491
1492         return retval;
1493 }
1494
1495 static void intelfb_fillrect (struct fb_info *info,
1496                               const struct fb_fillrect *rect)
1497 {
1498         struct intelfb_info *dinfo = GET_DINFO(info);
1499         u32 rop, color;
1500
1501 #if VERBOSE > 0
1502         DBG_MSG("intelfb_fillrect\n");
1503 #endif
1504
1505         if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1506                 cfb_fillrect(info, rect);
1507                 return;
1508         }
1509
1510         if (rect->rop == ROP_COPY)
1511                 rop = PAT_ROP_GXCOPY;
1512         else /* ROP_XOR */
1513                 rop = PAT_ROP_GXXOR;
1514
1515         if (dinfo->depth != 8)
1516                 color = dinfo->pseudo_palette[rect->color];
1517         else
1518                 color = rect->color;
1519
1520         intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1521                               rect->width, rect->height, color,
1522                               dinfo->pitch, info->var.bits_per_pixel,
1523                               rop);
1524 }
1525
1526 static void intelfb_copyarea(struct fb_info *info,
1527                              const struct fb_copyarea *region)
1528 {
1529         struct intelfb_info *dinfo = GET_DINFO(info);
1530
1531 #if VERBOSE > 0
1532         DBG_MSG("intelfb_copyarea\n");
1533 #endif
1534
1535         if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1536                 cfb_copyarea(info, region);
1537                 return;
1538         }
1539
1540         intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1541                             region->dy, region->width, region->height,
1542                             dinfo->pitch, info->var.bits_per_pixel);
1543 }
1544
1545 static void intelfb_imageblit(struct fb_info *info,
1546                               const struct fb_image *image)
1547 {
1548         struct intelfb_info *dinfo = GET_DINFO(info);
1549         u32 fgcolor, bgcolor;
1550
1551 #if VERBOSE > 0
1552         DBG_MSG("intelfb_imageblit\n");
1553 #endif
1554
1555         if (!ACCEL(dinfo, info) || dinfo->depth == 4
1556             || image->depth != 1) {
1557                 cfb_imageblit(info, image);
1558                 return;
1559         }
1560
1561         if (dinfo->depth != 8) {
1562                 fgcolor = dinfo->pseudo_palette[image->fg_color];
1563                 bgcolor = dinfo->pseudo_palette[image->bg_color];
1564         } else {
1565                 fgcolor = image->fg_color;
1566                 bgcolor = image->bg_color;
1567         }
1568
1569         if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1570                                     image->height, image->data,
1571                                     image->dx, image->dy,
1572                                     dinfo->pitch, info->var.bits_per_pixel)) {
1573                 cfb_imageblit(info, image);
1574                 return;
1575         }
1576 }
1577
1578 static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1579 {
1580         struct intelfb_info *dinfo = GET_DINFO(info);
1581         u32 physical;
1582 #if VERBOSE > 0
1583         DBG_MSG("intelfb_cursor\n");
1584 #endif
1585
1586         if (!dinfo->hwcursor)
1587                 return -ENODEV;
1588
1589         intelfbhw_cursor_hide(dinfo);
1590
1591         /* If XFree killed the cursor - restore it */
1592         physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1593                    (dinfo->cursor.offset << 12);
1594
1595         if (INREG(CURSOR_A_BASEADDR) != physical) {
1596                 u32 fg, bg;
1597
1598                 DBG_MSG("the cursor was killed - restore it !!\n");
1599                 DBG_MSG("size %d, %d   pos %d, %d\n",
1600                         cursor->image.width, cursor->image.height,
1601                         cursor->image.dx, cursor->image.dy);
1602
1603                 intelfbhw_cursor_init(dinfo);
1604                 intelfbhw_cursor_reset(dinfo);
1605                 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1606                                         cursor->image.dy);
1607
1608                 if (dinfo->depth != 8) {
1609                         fg =dinfo->pseudo_palette[cursor->image.fg_color];
1610                         bg =dinfo->pseudo_palette[cursor->image.bg_color];
1611                 } else {
1612                         fg = cursor->image.fg_color;
1613                         bg = cursor->image.bg_color;
1614                 }
1615                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1616                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1617                                       cursor->image.height,
1618                                       dinfo->cursor_src);
1619
1620                 if (cursor->enable)
1621                         intelfbhw_cursor_show(dinfo);
1622                 return 0;
1623         }
1624
1625         if (cursor->set & FB_CUR_SETPOS) {
1626                 u32 dx, dy;
1627
1628                 dx = cursor->image.dx - info->var.xoffset;
1629                 dy = cursor->image.dy - info->var.yoffset;
1630
1631                 intelfbhw_cursor_setpos(dinfo, dx, dy);
1632         }
1633
1634         if (cursor->set & FB_CUR_SETSIZE) {
1635                 if (cursor->image.width > 64 || cursor->image.height > 64)
1636                         return -ENXIO;
1637
1638                 intelfbhw_cursor_reset(dinfo);
1639         }
1640
1641         if (cursor->set & FB_CUR_SETCMAP) {
1642                 u32 fg, bg;
1643
1644                 if (dinfo->depth != 8) {
1645                         fg = dinfo->pseudo_palette[cursor->image.fg_color];
1646                         bg = dinfo->pseudo_palette[cursor->image.bg_color];
1647                 } else {
1648                         fg = cursor->image.fg_color;
1649                         bg = cursor->image.bg_color;
1650                 }
1651
1652                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1653         }
1654
1655         if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1656                 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1657                 u32 size = s_pitch * cursor->image.height;
1658                 u8 *dat = (u8 *) cursor->image.data;
1659                 u8 *msk = (u8 *) cursor->mask;
1660                 u8 src[64];
1661                 u32 i;
1662
1663                 if (cursor->image.depth != 1)
1664                         return -ENXIO;
1665
1666                 switch (cursor->rop) {
1667                 case ROP_XOR:
1668                         for (i = 0; i < size; i++)
1669                                 src[i] = dat[i] ^ msk[i];
1670                         break;
1671                 case ROP_COPY:
1672                 default:
1673                         for (i = 0; i < size; i++)
1674                                 src[i] = dat[i] & msk[i];
1675                         break;
1676                 }
1677
1678                 /* save the bitmap to restore it when XFree will
1679                    make the cursor dirty */
1680                 memcpy(dinfo->cursor_src, src, size);
1681
1682                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1683                                       cursor->image.height, src);
1684         }
1685
1686         if (cursor->enable)
1687                 intelfbhw_cursor_show(dinfo);
1688
1689         return 0;
1690 }
1691
1692 static int intelfb_sync(struct fb_info *info)
1693 {
1694         struct intelfb_info *dinfo = GET_DINFO(info);
1695
1696 #if VERBOSE > 0
1697         DBG_MSG("intelfb_sync\n");
1698 #endif
1699
1700         if (dinfo->ring_lockup)
1701                 return 0;
1702
1703         intelfbhw_do_sync(dinfo);
1704         return 0;
1705 }
1706