Merge commit 'v3.3-rc1' into fbdev-next
[~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         }
533
534         dinfo = info->par;
535         dinfo->info  = info;
536         dinfo->fbops = &intel_fb_ops;
537         dinfo->pdev  = pdev;
538
539         /* Reserve pixmap space. */
540         info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
541         if (info->pixmap.addr == NULL) {
542                 ERR_MSG("Cannot reserve pixmap memory.\n");
543                 goto err_out_pixmap;
544         }
545
546         /* set early this option because it could be changed by tv encoder
547            driver */
548         dinfo->fixed_mode = fixed;
549
550         /* Enable device. */
551         if ((err = pci_enable_device(pdev))) {
552                 ERR_MSG("Cannot enable device.\n");
553                 cleanup(dinfo);
554                 return -ENODEV;
555         }
556
557         /* Set base addresses. */
558         if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
559             (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
560             (ent->device == PCI_DEVICE_ID_INTEL_945G)  ||
561             (ent->device == PCI_DEVICE_ID_INTEL_945GM) ||
562             (ent->device == PCI_DEVICE_ID_INTEL_945GME) ||
563             (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
564             (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
565
566                 aperture_bar = 2;
567                 mmio_bar = 0;
568         }
569         dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
570         dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
571         dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
572         DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
573                 (unsigned long long)pci_resource_start(pdev, aperture_bar),
574                 (unsigned long long)pci_resource_len(pdev, aperture_bar),
575                 (unsigned long long)pci_resource_start(pdev, mmio_bar),
576                 (unsigned long long)pci_resource_len(pdev, mmio_bar));
577
578         /* Reserve the fb and MMIO regions */
579         if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
580                                 INTELFB_MODULE_NAME)) {
581                 ERR_MSG("Cannot reserve FB region.\n");
582                 cleanup(dinfo);
583                 return -ENODEV;
584         }
585
586         dinfo->flag |= INTELFB_FB_ACQUIRED;
587
588         if (!request_mem_region(dinfo->mmio_base_phys,
589                                 INTEL_REG_SIZE,
590                                 INTELFB_MODULE_NAME)) {
591                 ERR_MSG("Cannot reserve MMIO region.\n");
592                 cleanup(dinfo);
593                 return -ENODEV;
594         }
595
596         dinfo->flag |= INTELFB_MMIO_ACQUIRED;
597
598         /* Get the chipset info. */
599         dinfo->pci_chipset = pdev->device;
600
601         if (intelfbhw_get_chipset(pdev, dinfo)) {
602                 cleanup(dinfo);
603                 return -ENODEV;
604         }
605
606         if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
607                 cleanup(dinfo);
608                 return -ENODEV;
609         }
610
611         INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
612                 "stolen memory %dkB\n",
613                 pdev->bus->number, PCI_SLOT(pdev->devfn),
614                 PCI_FUNC(pdev->devfn), dinfo->name,
615                 BtoMB(aperture_size), BtoKB(stolen_size));
616
617         /* Set these from the options. */
618         dinfo->accel    = accel;
619         dinfo->hwcursor = hwcursor;
620
621         if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
622                 INF_MSG("Acceleration is not supported for the %s chipset.\n",
623                         dinfo->name);
624                 dinfo->accel = 0;
625         }
626
627         /* Framebuffer parameters - Use all the stolen memory if >= vram */
628         if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
629                 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
630                 dinfo->fbmem_gart = 0;
631         } else {
632                 dinfo->fb.size =  MB(vram);
633                 dinfo->fbmem_gart = 1;
634         }
635
636         /* Allocate space for the ring buffer and HW cursor if enabled. */
637         if (dinfo->accel) {
638                 dinfo->ring.size = RINGBUFFER_SIZE;
639                 dinfo->ring_tail_mask = dinfo->ring.size - 1;
640         }
641         if (dinfo->hwcursor)
642                 dinfo->cursor.size = HW_CURSOR_SIZE;
643
644         /* Use agpgart to manage the GATT */
645         if (!(bridge = agp_backend_acquire(pdev))) {
646                 ERR_MSG("cannot acquire agp\n");
647                 cleanup(dinfo);
648                 return -ENODEV;
649         }
650
651         /* get the current gatt info */
652         if (agp_copy_info(bridge, &gtt_info)) {
653                 ERR_MSG("cannot get agp info\n");
654                 agp_backend_release(bridge);
655                 cleanup(dinfo);
656                 return -ENODEV;
657         }
658
659         if (MB(voffset) < stolen_size)
660                 offset = (stolen_size >> 12);
661         else
662                 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
663
664         /* set the mem offsets - set them after the already used pages */
665         if (dinfo->accel)
666                 dinfo->ring.offset = offset + gtt_info.current_memory;
667         if (dinfo->hwcursor)
668                 dinfo->cursor.offset = offset +
669                         + gtt_info.current_memory + (dinfo->ring.size >> 12);
670         if (dinfo->fbmem_gart)
671                 dinfo->fb.offset = offset +
672                         + gtt_info.current_memory + (dinfo->ring.size >> 12)
673                         + (dinfo->cursor.size >> 12);
674
675         /* Allocate memories (which aren't stolen) */
676         /* Map the fb and MMIO regions */
677         /* ioremap only up to the end of used aperture */
678         dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
679                 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
680                  + dinfo->fb.size);
681         if (!dinfo->aperture.virtual) {
682                 ERR_MSG("Cannot remap FB region.\n");
683                 cleanup(dinfo);
684                 return -ENODEV;
685         }
686
687         dinfo->mmio_base =
688                 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
689                                               INTEL_REG_SIZE);
690         if (!dinfo->mmio_base) {
691                 ERR_MSG("Cannot remap MMIO region.\n");
692                 cleanup(dinfo);
693                 return -ENODEV;
694         }
695
696         if (dinfo->accel) {
697                 if (!(dinfo->gtt_ring_mem =
698                       agp_allocate_memory(bridge, dinfo->ring.size >> 12,
699                                           AGP_NORMAL_MEMORY))) {
700                         ERR_MSG("cannot allocate ring buffer memory\n");
701                         agp_backend_release(bridge);
702                         cleanup(dinfo);
703                         return -ENOMEM;
704                 }
705                 if (agp_bind_memory(dinfo->gtt_ring_mem,
706                                     dinfo->ring.offset)) {
707                         ERR_MSG("cannot bind ring buffer memory\n");
708                         agp_backend_release(bridge);
709                         cleanup(dinfo);
710                         return -EBUSY;
711                 }
712                 dinfo->ring.physical = dinfo->aperture.physical
713                         + (dinfo->ring.offset << 12);
714                 dinfo->ring.virtual  = dinfo->aperture.virtual
715                         + (dinfo->ring.offset << 12);
716                 dinfo->ring_head = 0;
717         }
718         if (dinfo->hwcursor) {
719                 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
720                         : AGP_NORMAL_MEMORY;
721                 if (!(dinfo->gtt_cursor_mem =
722                       agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
723                                           agp_memtype))) {
724                         ERR_MSG("cannot allocate cursor memory\n");
725                         agp_backend_release(bridge);
726                         cleanup(dinfo);
727                         return -ENOMEM;
728                 }
729                 if (agp_bind_memory(dinfo->gtt_cursor_mem,
730                                     dinfo->cursor.offset)) {
731                         ERR_MSG("cannot bind cursor memory\n");
732                         agp_backend_release(bridge);
733                         cleanup(dinfo);
734                         return -EBUSY;
735                 }
736                 if (dinfo->mobile)
737                         dinfo->cursor.physical
738                                 = dinfo->gtt_cursor_mem->physical;
739                 else
740                         dinfo->cursor.physical = dinfo->aperture.physical
741                                 + (dinfo->cursor.offset << 12);
742                 dinfo->cursor.virtual = dinfo->aperture.virtual
743                         + (dinfo->cursor.offset << 12);
744         }
745         if (dinfo->fbmem_gart) {
746                 if (!(dinfo->gtt_fb_mem =
747                       agp_allocate_memory(bridge, dinfo->fb.size >> 12,
748                                           AGP_NORMAL_MEMORY))) {
749                         WRN_MSG("cannot allocate framebuffer memory - use "
750                                 "the stolen one\n");
751                         dinfo->fbmem_gart = 0;
752                 }
753                 if (agp_bind_memory(dinfo->gtt_fb_mem,
754                                     dinfo->fb.offset)) {
755                         WRN_MSG("cannot bind framebuffer memory - use "
756                                 "the stolen one\n");
757                         dinfo->fbmem_gart = 0;
758                 }
759         }
760
761         /* update framebuffer memory parameters */
762         if (!dinfo->fbmem_gart)
763                 dinfo->fb.offset = 0;   /* starts at offset 0 */
764         dinfo->fb.physical = dinfo->aperture.physical
765                 + (dinfo->fb.offset << 12);
766         dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
767         dinfo->fb_start = dinfo->fb.offset << 12;
768
769         /* release agpgart */
770         agp_backend_release(bridge);
771
772         if (mtrr)
773                 set_mtrr(dinfo);
774
775         DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
776                 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
777                 dinfo->fb.virtual);
778         DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
779                 dinfo->mmio_base_phys, INTEL_REG_SIZE,
780                 dinfo->mmio_base);
781         DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
782                 dinfo->ring.physical, dinfo->ring.size,
783                 dinfo->ring.virtual);
784         DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
785                 dinfo->cursor.physical, dinfo->cursor.size,
786                 dinfo->cursor.virtual, dinfo->cursor.offset,
787                 dinfo->cursor.physical);
788
789         DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
790                 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
791         DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
792
793         if (probeonly)
794                 bailout(dinfo);
795
796         /*
797          * Check if the LVDS port or any DVO ports are enabled.  If so,
798          * don't allow mode switching
799          */
800         dvo = intelfbhw_check_non_crt(dinfo);
801         if (dvo) {
802                 dinfo->fixed_mode = 1;
803                 WRN_MSG("Non-CRT device is enabled ( ");
804                 i = 0;
805                 while (dvo) {
806                         if (dvo & 1) {
807                                 s = intelfbhw_dvo_to_string(1 << i);
808                                 if (s)
809                                         printk("%s ", s);
810                         }
811                         dvo >>= 1;
812                         ++i;
813                 }
814                 printk(").  Disabling mode switching.\n");
815         }
816
817         if (bailearly == 1)
818                 bailout(dinfo);
819
820         if (FIXED_MODE(dinfo) &&
821             screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
822                 ERR_MSG("Video mode must be programmed at boot time.\n");
823                 cleanup(dinfo);
824                 return -ENODEV;
825         }
826
827         if (bailearly == 2)
828                 bailout(dinfo);
829
830         /* Initialise dinfo and related data. */
831         /* If an initial mode was programmed at boot time, get its details. */
832         if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
833                 get_initial_mode(dinfo);
834
835         if (bailearly == 3)
836                 bailout(dinfo);
837
838         if (FIXED_MODE(dinfo))  /* remap fb address */
839                 update_dinfo(dinfo, &dinfo->initial_var);
840
841         if (bailearly == 4)
842                 bailout(dinfo);
843
844
845         if (intelfb_set_fbinfo(dinfo)) {
846                 cleanup(dinfo);
847                 return -ENODEV;
848         }
849
850         if (bailearly == 5)
851                 bailout(dinfo);
852
853 #ifdef CONFIG_FB_INTEL_I2C
854         /* register I2C bus */
855         intelfb_create_i2c_busses(dinfo);
856 #endif
857
858         if (bailearly == 6)
859                 bailout(dinfo);
860
861         pci_set_drvdata(pdev, dinfo);
862
863         /* Save the initial register state. */
864         i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
865                                     bailearly > 6 ? bailearly - 6 : 0);
866         if (i != 0) {
867                 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
868                 bailout(dinfo);
869         }
870
871         intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
872
873         if (bailearly == 18)
874                 bailout(dinfo);
875
876         /* read active pipe */
877         dinfo->pipe = intelfbhw_active_pipe(&dinfo->save_state);
878
879         /* Cursor initialisation */
880         if (dinfo->hwcursor) {
881                 intelfbhw_cursor_init(dinfo);
882                 intelfbhw_cursor_reset(dinfo);
883         }
884
885         if (bailearly == 19)
886                 bailout(dinfo);
887
888         /* 2d acceleration init */
889         if (dinfo->accel)
890                 intelfbhw_2d_start(dinfo);
891
892         if (bailearly == 20)
893                 bailout(dinfo);
894
895         if (noregister)
896                 bailout(dinfo);
897
898         if (register_framebuffer(dinfo->info) < 0) {
899                 ERR_MSG("Cannot register framebuffer.\n");
900                 cleanup(dinfo);
901                 return -ENODEV;
902         }
903
904         dinfo->registered = 1;
905         dinfo->open = 0;
906
907         init_waitqueue_head(&dinfo->vsync.wait);
908         spin_lock_init(&dinfo->int_lock);
909         dinfo->irq_flags = 0;
910         dinfo->vsync.pan_display = 0;
911         dinfo->vsync.pan_offset = 0;
912
913         return 0;
914
915 err_out_pixmap:
916         fb_dealloc_cmap(&info->cmap);
917 err_out_cmap:
918         framebuffer_release(info);
919         return -ENODEV;
920 }
921
922 static void __devexit
923 intelfb_pci_unregister(struct pci_dev *pdev)
924 {
925         struct intelfb_info *dinfo = pci_get_drvdata(pdev);
926
927         DBG_MSG("intelfb_pci_unregister\n");
928
929         if (!dinfo)
930                 return;
931
932         cleanup(dinfo);
933
934         pci_set_drvdata(pdev, NULL);
935 }
936
937 /***************************************************************
938  *                       helper functions                      *
939  ***************************************************************/
940
941 int __inline__ intelfb_var_to_depth(const struct fb_var_screeninfo *var)
942 {
943         DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
944                 var->bits_per_pixel, var->green.length);
945
946         switch (var->bits_per_pixel) {
947         case 16:
948                 return (var->green.length == 6) ? 16 : 15;
949         case 32:
950                 return 24;
951         default:
952                 return var->bits_per_pixel;
953         }
954 }
955
956
957 static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
958 {
959         int xtot = var->xres + var->left_margin + var->right_margin +
960                    var->hsync_len;
961         int ytot = var->yres + var->upper_margin + var->lower_margin +
962                    var->vsync_len;
963
964         return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
965 }
966
967 /***************************************************************
968  *                Various intialisation functions              *
969  ***************************************************************/
970
971 static void __devinit get_initial_mode(struct intelfb_info *dinfo)
972 {
973         struct fb_var_screeninfo *var;
974         int xtot, ytot;
975
976         DBG_MSG("get_initial_mode\n");
977
978         dinfo->initial_vga = 1;
979         dinfo->initial_fb_base = screen_info.lfb_base;
980         dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
981         dinfo->initial_pitch = screen_info.lfb_linelength;
982
983         var = &dinfo->initial_var;
984         memset(var, 0, sizeof(*var));
985         var->xres = screen_info.lfb_width;
986         var->yres = screen_info.lfb_height;
987         var->bits_per_pixel = screen_info.lfb_depth;
988         switch (screen_info.lfb_depth) {
989         case 15:
990                 var->bits_per_pixel = 16;
991                 break;
992         case 24:
993                 var->bits_per_pixel = 32;
994                 break;
995         }
996
997         DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
998                 dinfo->initial_fb_base, dinfo->initial_video_ram,
999                 BtoKB(dinfo->initial_video_ram));
1000
1001         DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
1002                 var->xres, var->yres, var->bits_per_pixel,
1003                 dinfo->initial_pitch);
1004
1005         /* Dummy timing values (assume 60Hz) */
1006         var->left_margin = (var->xres / 8) & 0xf8;
1007         var->right_margin = 32;
1008         var->upper_margin = 16;
1009         var->lower_margin = 4;
1010         var->hsync_len = (var->xres / 8) & 0xf8;
1011         var->vsync_len = 4;
1012
1013         xtot = var->xres + var->left_margin +
1014                 var->right_margin + var->hsync_len;
1015         ytot = var->yres + var->upper_margin +
1016                 var->lower_margin + var->vsync_len;
1017         var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1018
1019         var->height = -1;
1020         var->width = -1;
1021
1022         if (var->bits_per_pixel > 8) {
1023                 var->red.offset = screen_info.red_pos;
1024                 var->red.length = screen_info.red_size;
1025                 var->green.offset = screen_info.green_pos;
1026                 var->green.length = screen_info.green_size;
1027                 var->blue.offset = screen_info.blue_pos;
1028                 var->blue.length = screen_info.blue_size;
1029                 var->transp.offset = screen_info.rsvd_pos;
1030                 var->transp.length = screen_info.rsvd_size;
1031         } else {
1032                 var->red.length = 8;
1033                 var->green.length = 8;
1034                 var->blue.length = 8;
1035         }
1036 }
1037
1038 static int __devinit intelfb_init_var(struct intelfb_info *dinfo)
1039 {
1040         struct fb_var_screeninfo *var;
1041         int msrc = 0;
1042
1043         DBG_MSG("intelfb_init_var\n");
1044
1045         var = &dinfo->info->var;
1046         if (FIXED_MODE(dinfo)) {
1047                 memcpy(var, &dinfo->initial_var,
1048                        sizeof(struct fb_var_screeninfo));
1049                 msrc = 5;
1050         } else {
1051                 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1052                 u8 *edid_d = NULL;
1053
1054                 if (edid_s) {
1055                         edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1056
1057                         if (edid_d) {
1058                                 fb_edid_to_monspecs(edid_d,
1059                                                     &dinfo->info->monspecs);
1060                                 kfree(edid_d);
1061                         }
1062                 }
1063
1064                 if (mode) {
1065                         printk("intelfb: Looking for mode in private "
1066                                "database\n");
1067                         msrc = fb_find_mode(var, dinfo->info, mode,
1068                                             dinfo->info->monspecs.modedb,
1069                                             dinfo->info->monspecs.modedb_len,
1070                                             NULL, 0);
1071
1072                         if (msrc && msrc > 1) {
1073                                 printk("intelfb: No mode in private database, "
1074                                        "intelfb: looking for mode in global "
1075                                        "database ");
1076                                 msrc = fb_find_mode(var, dinfo->info, mode,
1077                                                     NULL, 0, NULL, 0);
1078
1079                                 if (msrc)
1080                                         msrc |= 8;
1081                         }
1082
1083                 }
1084
1085                 if (!msrc)
1086                         msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1087                                             NULL, 0, NULL, 0);
1088         }
1089
1090         if (!msrc) {
1091                 ERR_MSG("Cannot find a suitable video mode.\n");
1092                 return 1;
1093         }
1094
1095         INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1096                 var->bits_per_pixel, var_to_refresh(var));
1097
1098         DBG_MSG("Initial video mode is from %d.\n", msrc);
1099
1100 #if ALLOCATE_FOR_PANNING
1101         /* Allow use of half of the video ram for panning */
1102         var->xres_virtual = var->xres;
1103         var->yres_virtual =
1104                 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1105         if (var->yres_virtual < var->yres)
1106                 var->yres_virtual = var->yres;
1107 #else
1108         var->yres_virtual = var->yres;
1109 #endif
1110
1111         if (dinfo->accel)
1112                 var->accel_flags |= FB_ACCELF_TEXT;
1113         else
1114                 var->accel_flags &= ~FB_ACCELF_TEXT;
1115
1116         return 0;
1117 }
1118
1119 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo)
1120 {
1121         struct fb_info *info = dinfo->info;
1122
1123         DBG_MSG("intelfb_set_fbinfo\n");
1124
1125         info->flags = FBINFO_FLAG_DEFAULT;
1126         info->fbops = &intel_fb_ops;
1127         info->pseudo_palette = dinfo->pseudo_palette;
1128
1129         info->pixmap.size = 64*1024;
1130         info->pixmap.buf_align = 8;
1131         info->pixmap.access_align = 32;
1132         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1133
1134         if (intelfb_init_var(dinfo))
1135                 return 1;
1136
1137         info->pixmap.scan_align = 1;
1138         strcpy(info->fix.id, dinfo->name);
1139         info->fix.smem_start = dinfo->fb.physical;
1140         info->fix.smem_len = dinfo->fb.size;
1141         info->fix.type = FB_TYPE_PACKED_PIXELS;
1142         info->fix.type_aux = 0;
1143         info->fix.xpanstep = 8;
1144         info->fix.ypanstep = 1;
1145         info->fix.ywrapstep = 0;
1146         info->fix.mmio_start = dinfo->mmio_base_phys;
1147         info->fix.mmio_len = INTEL_REG_SIZE;
1148         info->fix.accel = FB_ACCEL_I830;
1149         update_dinfo(dinfo, &info->var);
1150
1151         return 0;
1152 }
1153
1154 /* Update dinfo to match the active video mode. */
1155 static void update_dinfo(struct intelfb_info *dinfo,
1156                          struct fb_var_screeninfo *var)
1157 {
1158         DBG_MSG("update_dinfo\n");
1159
1160         dinfo->bpp = var->bits_per_pixel;
1161         dinfo->depth = intelfb_var_to_depth(var);
1162         dinfo->xres = var->xres;
1163         dinfo->yres = var->xres;
1164         dinfo->pixclock = var->pixclock;
1165
1166         dinfo->info->fix.visual = dinfo->visual;
1167         dinfo->info->fix.line_length = dinfo->pitch;
1168
1169         switch (dinfo->bpp) {
1170         case 8:
1171                 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1172                 dinfo->pitch = var->xres_virtual;
1173                 break;
1174         case 16:
1175                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1176                 dinfo->pitch = var->xres_virtual * 2;
1177                 break;
1178         case 32:
1179                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1180                 dinfo->pitch = var->xres_virtual * 4;
1181                 break;
1182         }
1183
1184         /* Make sure the line length is a aligned correctly. */
1185         if (IS_I9XX(dinfo))
1186                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1187         else
1188                 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1189
1190         if (FIXED_MODE(dinfo))
1191                 dinfo->pitch = dinfo->initial_pitch;
1192
1193         dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1194         dinfo->info->fix.line_length = dinfo->pitch;
1195         dinfo->info->fix.visual = dinfo->visual;
1196 }
1197
1198 /* fbops functions */
1199
1200 /***************************************************************
1201  *                       fbdev interface                       *
1202  ***************************************************************/
1203
1204 static int intelfb_open(struct fb_info *info, int user)
1205 {
1206         struct intelfb_info *dinfo = GET_DINFO(info);
1207
1208         if (user)
1209                 dinfo->open++;
1210
1211         return 0;
1212 }
1213
1214 static int intelfb_release(struct fb_info *info, int user)
1215 {
1216         struct intelfb_info *dinfo = GET_DINFO(info);
1217
1218         if (user) {
1219                 dinfo->open--;
1220                 msleep(1);
1221                 if (!dinfo->open)
1222                         intelfbhw_disable_irq(dinfo);
1223         }
1224
1225         return 0;
1226 }
1227
1228 static int intelfb_check_var(struct fb_var_screeninfo *var,
1229                              struct fb_info *info)
1230 {
1231         int change_var = 0;
1232         struct fb_var_screeninfo v;
1233         struct intelfb_info *dinfo;
1234         static int first = 1;
1235         int i;
1236         /* Good pitches to allow tiling.  Don't care about pitches < 1024. */
1237         static const int pitches[] = {
1238                 128 * 8,
1239                 128 * 16,
1240                 128 * 32,
1241                 128 * 64,
1242                 0
1243         };
1244
1245         DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1246
1247         dinfo = GET_DINFO(info);
1248
1249         /* update the pitch */
1250         if (intelfbhw_validate_mode(dinfo, var) != 0)
1251                 return -EINVAL;
1252
1253         v = *var;
1254
1255         for (i = 0; pitches[i] != 0; i++) {
1256                 if (pitches[i] >= v.xres_virtual) {
1257                         v.xres_virtual = pitches[i];
1258                         break;
1259                 }
1260         }
1261
1262         /* Check for a supported bpp. */
1263         if (v.bits_per_pixel <= 8)
1264                 v.bits_per_pixel = 8;
1265         else if (v.bits_per_pixel <= 16) {
1266                 if (v.bits_per_pixel == 16)
1267                         v.green.length = 6;
1268                 v.bits_per_pixel = 16;
1269         } else if (v.bits_per_pixel <= 32)
1270                 v.bits_per_pixel = 32;
1271         else
1272                 return -EINVAL;
1273
1274         change_var = ((info->var.xres != var->xres) ||
1275                       (info->var.yres != var->yres) ||
1276                       (info->var.xres_virtual != var->xres_virtual) ||
1277                       (info->var.yres_virtual != var->yres_virtual) ||
1278                       (info->var.bits_per_pixel != var->bits_per_pixel) ||
1279                       memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1280                       memcmp(&info->var.green, &var->green,
1281                              sizeof(var->green)) ||
1282                       memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1283
1284         if (FIXED_MODE(dinfo) &&
1285             (change_var ||
1286              var->yres_virtual > dinfo->initial_var.yres_virtual ||
1287              var->yres_virtual < dinfo->initial_var.yres ||
1288              var->xoffset || var->nonstd)) {
1289                 if (first) {
1290                         ERR_MSG("Changing the video mode is not supported.\n");
1291                         first = 0;
1292                 }
1293                 return -EINVAL;
1294         }
1295
1296         switch (intelfb_var_to_depth(&v)) {
1297         case 8:
1298                 v.red.offset = v.green.offset = v.blue.offset = 0;
1299                 v.red.length = v.green.length = v.blue.length = 8;
1300                 v.transp.offset = v.transp.length = 0;
1301                 break;
1302         case 15:
1303                 v.red.offset = 10;
1304                 v.green.offset = 5;
1305                 v.blue.offset = 0;
1306                 v.red.length = v.green.length = v.blue.length = 5;
1307                 v.transp.offset = v.transp.length = 0;
1308                 break;
1309         case 16:
1310                 v.red.offset = 11;
1311                 v.green.offset = 5;
1312                 v.blue.offset = 0;
1313                 v.red.length = 5;
1314                 v.green.length = 6;
1315                 v.blue.length = 5;
1316                 v.transp.offset = v.transp.length = 0;
1317                 break;
1318         case 24:
1319                 v.red.offset = 16;
1320                 v.green.offset = 8;
1321                 v.blue.offset = 0;
1322                 v.red.length = v.green.length = v.blue.length = 8;
1323                 v.transp.offset = v.transp.length = 0;
1324                 break;
1325         case 32:
1326                 v.red.offset = 16;
1327                 v.green.offset = 8;
1328                 v.blue.offset = 0;
1329                 v.red.length = v.green.length = v.blue.length = 8;
1330                 v.transp.offset = 24;
1331                 v.transp.length = 8;
1332                 break;
1333         }
1334
1335         if (v.xoffset < 0)
1336                 v.xoffset = 0;
1337         if (v.yoffset < 0)
1338                 v.yoffset = 0;
1339
1340         if (v.xoffset > v.xres_virtual - v.xres)
1341                 v.xoffset = v.xres_virtual - v.xres;
1342         if (v.yoffset > v.yres_virtual - v.yres)
1343                 v.yoffset = v.yres_virtual - v.yres;
1344
1345         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1346                           v.transp.msb_right = 0;
1347
1348         *var = v;
1349
1350         return 0;
1351 }
1352
1353 static int intelfb_set_par(struct fb_info *info)
1354 {
1355         struct intelfb_hwstate *hw;
1356         struct intelfb_info *dinfo = GET_DINFO(info);
1357
1358         if (FIXED_MODE(dinfo)) {
1359                 ERR_MSG("Changing the video mode is not supported.\n");
1360                 return -EINVAL;
1361         }
1362
1363         hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1364         if (!hw)
1365                 return -ENOMEM;
1366
1367         DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1368                 info->var.yres, info->var.bits_per_pixel);
1369
1370         /*
1371          * Disable VCO prior to timing register change.
1372          */
1373         OUTREG(DPLL_A, INREG(DPLL_A) & ~DPLL_VCO_ENABLE);
1374
1375         intelfb_blank(FB_BLANK_POWERDOWN, info);
1376
1377         if (ACCEL(dinfo, info))
1378                 intelfbhw_2d_stop(dinfo);
1379
1380         memcpy(hw, &dinfo->save_state, sizeof(*hw));
1381         if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1382                 goto invalid_mode;
1383         if (intelfbhw_program_mode(dinfo, hw, 0))
1384                 goto invalid_mode;
1385
1386 #if REGDUMP > 0
1387         intelfbhw_read_hw_state(dinfo, hw, 0);
1388         intelfbhw_print_hw_state(dinfo, hw);
1389 #endif
1390
1391         update_dinfo(dinfo, &info->var);
1392
1393         if (ACCEL(dinfo, info))
1394                 intelfbhw_2d_start(dinfo);
1395
1396         intelfb_pan_display(&info->var, info);
1397
1398         intelfb_blank(FB_BLANK_UNBLANK, info);
1399
1400         if (ACCEL(dinfo, info)) {
1401                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1402                 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1403                 FBINFO_HWACCEL_IMAGEBLIT;
1404         } else
1405                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1406
1407         kfree(hw);
1408         return 0;
1409 invalid_mode:
1410         kfree(hw);
1411         return -EINVAL;
1412 }
1413
1414 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1415                              unsigned blue, unsigned transp,
1416                              struct fb_info *info)
1417 {
1418         struct intelfb_info *dinfo = GET_DINFO(info);
1419
1420 #if VERBOSE > 0
1421         DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1422 #endif
1423
1424         if (regno > 255)
1425                 return 1;
1426
1427         if (dinfo->depth == 8) {
1428                 red >>= 8;
1429                 green >>= 8;
1430                 blue >>= 8;
1431
1432                 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1433                                     transp);
1434         }
1435
1436         if (regno < 16) {
1437                 switch (dinfo->depth) {
1438                 case 15:
1439                         dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1440                                 ((green & 0xf800) >>  6) |
1441                                 ((blue & 0xf800) >> 11);
1442                         break;
1443                 case 16:
1444                         dinfo->pseudo_palette[regno] = (red & 0xf800) |
1445                                 ((green & 0xfc00) >>  5) |
1446                                 ((blue  & 0xf800) >> 11);
1447                         break;
1448                 case 24:
1449                         dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1450                                 (green & 0xff00) |
1451                                 ((blue  & 0xff00) >> 8);
1452                         break;
1453                 }
1454         }
1455
1456         return 0;
1457 }
1458
1459 static int intelfb_blank(int blank, struct fb_info *info)
1460 {
1461         intelfbhw_do_blank(blank, info);
1462         return 0;
1463 }
1464
1465 static int intelfb_pan_display(struct fb_var_screeninfo *var,
1466                                struct fb_info *info)
1467 {
1468         intelfbhw_pan_display(var, info);
1469         return 0;
1470 }
1471
1472 /* When/if we have our own ioctls. */
1473 static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1474                          unsigned long arg)
1475 {
1476         int retval = 0;
1477         struct intelfb_info *dinfo = GET_DINFO(info);
1478         u32 pipe = 0;
1479
1480         switch (cmd) {
1481                 case FBIO_WAITFORVSYNC:
1482                         if (get_user(pipe, (__u32 __user *)arg))
1483                                 return -EFAULT;
1484
1485                         retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1486                         break;
1487                 default:
1488                         break;
1489         }
1490
1491         return retval;
1492 }
1493
1494 static void intelfb_fillrect (struct fb_info *info,
1495                               const struct fb_fillrect *rect)
1496 {
1497         struct intelfb_info *dinfo = GET_DINFO(info);
1498         u32 rop, color;
1499
1500 #if VERBOSE > 0
1501         DBG_MSG("intelfb_fillrect\n");
1502 #endif
1503
1504         if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1505                 cfb_fillrect(info, rect);
1506                 return;
1507         }
1508
1509         if (rect->rop == ROP_COPY)
1510                 rop = PAT_ROP_GXCOPY;
1511         else /* ROP_XOR */
1512                 rop = PAT_ROP_GXXOR;
1513
1514         if (dinfo->depth != 8)
1515                 color = dinfo->pseudo_palette[rect->color];
1516         else
1517                 color = rect->color;
1518
1519         intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1520                               rect->width, rect->height, color,
1521                               dinfo->pitch, info->var.bits_per_pixel,
1522                               rop);
1523 }
1524
1525 static void intelfb_copyarea(struct fb_info *info,
1526                              const struct fb_copyarea *region)
1527 {
1528         struct intelfb_info *dinfo = GET_DINFO(info);
1529
1530 #if VERBOSE > 0
1531         DBG_MSG("intelfb_copyarea\n");
1532 #endif
1533
1534         if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1535                 cfb_copyarea(info, region);
1536                 return;
1537         }
1538
1539         intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1540                             region->dy, region->width, region->height,
1541                             dinfo->pitch, info->var.bits_per_pixel);
1542 }
1543
1544 static void intelfb_imageblit(struct fb_info *info,
1545                               const struct fb_image *image)
1546 {
1547         struct intelfb_info *dinfo = GET_DINFO(info);
1548         u32 fgcolor, bgcolor;
1549
1550 #if VERBOSE > 0
1551         DBG_MSG("intelfb_imageblit\n");
1552 #endif
1553
1554         if (!ACCEL(dinfo, info) || dinfo->depth == 4
1555             || image->depth != 1) {
1556                 cfb_imageblit(info, image);
1557                 return;
1558         }
1559
1560         if (dinfo->depth != 8) {
1561                 fgcolor = dinfo->pseudo_palette[image->fg_color];
1562                 bgcolor = dinfo->pseudo_palette[image->bg_color];
1563         } else {
1564                 fgcolor = image->fg_color;
1565                 bgcolor = image->bg_color;
1566         }
1567
1568         if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1569                                     image->height, image->data,
1570                                     image->dx, image->dy,
1571                                     dinfo->pitch, info->var.bits_per_pixel)) {
1572                 cfb_imageblit(info, image);
1573                 return;
1574         }
1575 }
1576
1577 static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1578 {
1579         struct intelfb_info *dinfo = GET_DINFO(info);
1580         u32 physical;
1581 #if VERBOSE > 0
1582         DBG_MSG("intelfb_cursor\n");
1583 #endif
1584
1585         if (!dinfo->hwcursor)
1586                 return -ENODEV;
1587
1588         intelfbhw_cursor_hide(dinfo);
1589
1590         /* If XFree killed the cursor - restore it */
1591         physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1592                    (dinfo->cursor.offset << 12);
1593
1594         if (INREG(CURSOR_A_BASEADDR) != physical) {
1595                 u32 fg, bg;
1596
1597                 DBG_MSG("the cursor was killed - restore it !!\n");
1598                 DBG_MSG("size %d, %d   pos %d, %d\n",
1599                         cursor->image.width, cursor->image.height,
1600                         cursor->image.dx, cursor->image.dy);
1601
1602                 intelfbhw_cursor_init(dinfo);
1603                 intelfbhw_cursor_reset(dinfo);
1604                 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1605                                         cursor->image.dy);
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                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1615                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1616                                       cursor->image.height,
1617                                       dinfo->cursor_src);
1618
1619                 if (cursor->enable)
1620                         intelfbhw_cursor_show(dinfo);
1621                 return 0;
1622         }
1623
1624         if (cursor->set & FB_CUR_SETPOS) {
1625                 u32 dx, dy;
1626
1627                 dx = cursor->image.dx - info->var.xoffset;
1628                 dy = cursor->image.dy - info->var.yoffset;
1629
1630                 intelfbhw_cursor_setpos(dinfo, dx, dy);
1631         }
1632
1633         if (cursor->set & FB_CUR_SETSIZE) {
1634                 if (cursor->image.width > 64 || cursor->image.height > 64)
1635                         return -ENXIO;
1636
1637                 intelfbhw_cursor_reset(dinfo);
1638         }
1639
1640         if (cursor->set & FB_CUR_SETCMAP) {
1641                 u32 fg, bg;
1642
1643                 if (dinfo->depth != 8) {
1644                         fg = dinfo->pseudo_palette[cursor->image.fg_color];
1645                         bg = dinfo->pseudo_palette[cursor->image.bg_color];
1646                 } else {
1647                         fg = cursor->image.fg_color;
1648                         bg = cursor->image.bg_color;
1649                 }
1650
1651                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1652         }
1653
1654         if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1655                 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1656                 u32 size = s_pitch * cursor->image.height;
1657                 u8 *dat = (u8 *) cursor->image.data;
1658                 u8 *msk = (u8 *) cursor->mask;
1659                 u8 src[64];
1660                 u32 i;
1661
1662                 if (cursor->image.depth != 1)
1663                         return -ENXIO;
1664
1665                 switch (cursor->rop) {
1666                 case ROP_XOR:
1667                         for (i = 0; i < size; i++)
1668                                 src[i] = dat[i] ^ msk[i];
1669                         break;
1670                 case ROP_COPY:
1671                 default:
1672                         for (i = 0; i < size; i++)
1673                                 src[i] = dat[i] & msk[i];
1674                         break;
1675                 }
1676
1677                 /* save the bitmap to restore it when XFree will
1678                    make the cursor dirty */
1679                 memcpy(dinfo->cursor_src, src, size);
1680
1681                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1682                                       cursor->image.height, src);
1683         }
1684
1685         if (cursor->enable)
1686                 intelfbhw_cursor_show(dinfo);
1687
1688         return 0;
1689 }
1690
1691 static int intelfb_sync(struct fb_info *info)
1692 {
1693         struct intelfb_info *dinfo = GET_DINFO(info);
1694
1695 #if VERBOSE > 0
1696         DBG_MSG("intelfb_sync\n");
1697 #endif
1698
1699         if (dinfo->ring_lockup)
1700                 return 0;
1701
1702         intelfbhw_do_sync(dinfo);
1703         return 0;
1704 }
1705