[PATCH] fbdev: fill in the access_align field.
[linux-2.6.git] / drivers / video / intelfb / intelfbdrv.c
1 /*
2  * intelfb
3  *
4  * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G
5  * integrated graphics chips.
6  *
7  * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org>
8  *                   2004 Sylvain Meyer
9  *
10  * This driver consists of two parts.  The first part (intelfbdrv.c) provides
11  * the basic fbdev interfaces, is derived in part from the radeonfb and
12  * vesafb drivers, and is covered by the GPL.  The second part (intelfbhw.c)
13  * provides the code to program the hardware.  Most of it is derived from
14  * the i810/i830 XFree86 driver.  The HW-specific code is covered here
15  * under a dual license (GPL and MIT/XFree86 license).
16  *
17  * Author: David Dawes
18  *
19  */
20
21 /* $DHD: intelfb/intelfbdrv.c,v 1.20 2003/06/27 15:17:40 dawes Exp $ */
22
23 /*
24  * Changes:
25  *    01/2003 - Initial driver (0.1.0), no mode switching, no acceleration.
26  *              This initial version is a basic core that works a lot like
27  *              the vesafb driver.  It must be built-in to the kernel,
28  *              and the initial video mode must be set with vga=XXX at
29  *              boot time.  (David Dawes)
30  *
31  *    01/2003 - Version 0.2.0: Mode switching added, colormap support
32  *              implemented, Y panning, and soft screen blanking implemented.
33  *              No acceleration yet.  (David Dawes)
34  *
35  *    01/2003 - Version 0.3.0: fbcon acceleration support added.  Module
36  *              option handling added.  (David Dawes)
37  *
38  *    01/2003 - Version 0.4.0: fbcon HW cursor support added.  (David Dawes)
39  *
40  *    01/2003 - Version 0.4.1: Add auto-generation of built-in modes.
41  *              (David Dawes)
42  *
43  *    02/2003 - Version 0.4.2: Add check for active non-CRT devices, and
44  *              mode validation checks.  (David Dawes)
45  *
46  *    02/2003 - Version 0.4.3: Check when the VC is in graphics mode so that
47  *              acceleration is disabled while an XFree86 server is running.
48  *              (David Dawes)
49  *
50  *    02/2003 - Version 0.4.4: Monitor DPMS support.  (David Dawes)
51  *
52  *    02/2003 - Version 0.4.5: Basic XFree86 + fbdev working.  (David Dawes)
53  *
54  *    02/2003 - Version 0.5.0: Modify to work with the 2.5.32 kernel as well
55  *              as 2.4.x kernels.  (David Dawes)
56  *
57  *    02/2003 - Version 0.6.0: Split out HW-specifics into a separate file.
58  *              (David Dawes)
59  *
60  *    02/2003 - Version 0.7.0: Test on 852GM/855GM.  Acceleration and HW
61  *              cursor are disabled on this platform.  (David Dawes)
62  *
63  *    02/2003 - Version 0.7.1: Test on 845G.  Acceleration is disabled
64  *              on this platform.  (David Dawes)
65  *
66  *    02/2003 - Version 0.7.2: Test on 830M.  Acceleration and HW
67  *              cursor are disabled on this platform.  (David Dawes)
68  *
69  *    02/2003 - Version 0.7.3: Fix 8-bit modes for mobile platforms
70  *              (David Dawes)
71  *
72  *    02/2003 - Version 0.7.4: Add checks for FB and FBCON_HAS_CFB* configured
73  *              in the kernel, and add mode bpp verification and default
74  *              bpp selection based on which FBCON_HAS_CFB* are configured.
75  *              (David Dawes)
76  *
77  *    02/2003 - Version 0.7.5: Add basic package/install scripts based on the
78  *              DRI packaging scripts.  (David Dawes)
79  *
80  *    04/2003 - Version 0.7.6: Fix typo that affects builds with SMP-enabled
81  *              kernels.  (David Dawes, reported by Anupam).
82  *
83  *    06/2003 - Version 0.7.7:
84  *              Fix Makefile.kernel build problem (Tsutomu Yasuda).
85  *              Fix mis-placed #endif (2.4.21 kernel).
86  *
87  *    09/2004 - Version 0.9.0 - by Sylvain Meyer
88  *              Port to linux 2.6 kernel fbdev
89  *              Fix HW accel and HW cursor on i845G
90  *              Use of agpgart for fb memory reservation
91  *              Add mtrr support
92  *
93  *    10/2004 - Version 0.9.1
94  *              Use module_param instead of old MODULE_PARM
95  *              Some cleanup
96  *
97  *    11/2004 - Version 0.9.2
98  *              Add vram option to reserve more memory than stolen by BIOS
99  *              Fix intelfbhw_pan_display typo
100  *              Add __initdata annotations
101  *
102  * TODO:
103  *
104  *
105  * Wish List:
106  *
107  *
108  */
109
110 #include <linux/config.h>
111 #include <linux/module.h>
112 #include <linux/kernel.h>
113 #include <linux/errno.h>
114 #include <linux/string.h>
115 #include <linux/mm.h>
116 #include <linux/tty.h>
117 #include <linux/slab.h>
118 #include <linux/delay.h>
119 #include <linux/fb.h>
120 #include <linux/console.h>
121 #include <linux/selection.h>
122 #include <linux/ioport.h>
123 #include <linux/init.h>
124 #include <linux/pci.h>
125 #include <linux/vmalloc.h>
126 #include <linux/kd.h>
127 #include <linux/vt_kern.h>
128 #include <linux/pagemap.h>
129 #include <linux/version.h>
130
131 #include <asm/io.h>
132
133 #ifdef CONFIG_MTRR
134 #include <asm/mtrr.h>
135 #endif
136
137 #include "intelfb.h"
138 #include "intelfbhw.h"
139
140 static void __devinit get_initial_mode(struct intelfb_info *dinfo);
141 static void update_dinfo(struct intelfb_info *dinfo,
142                          struct fb_var_screeninfo *var);
143 static int intelfb_get_fix(struct fb_fix_screeninfo *fix,
144                            struct fb_info *info);
145
146 static int intelfb_check_var(struct fb_var_screeninfo *var,
147                              struct fb_info *info);
148 static int intelfb_set_par(struct fb_info *info);
149 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
150                              unsigned blue, unsigned transp,
151                              struct fb_info *info);
152
153 static int intelfb_blank(int blank, struct fb_info *info);
154 static int intelfb_pan_display(struct fb_var_screeninfo *var,
155                                struct fb_info *info);
156
157 static void intelfb_fillrect(struct fb_info *info,
158                              const struct fb_fillrect *rect);
159 static void intelfb_copyarea(struct fb_info *info,
160                              const struct fb_copyarea *region);
161 static void intelfb_imageblit(struct fb_info *info,
162                               const struct fb_image *image);
163 static int intelfb_cursor(struct fb_info *info,
164                            struct fb_cursor *cursor);
165
166 static int intelfb_sync(struct fb_info *info);
167
168 static int intelfb_ioctl(struct inode *inode, struct file *file,
169                          unsigned int cmd, unsigned long arg,
170                          struct fb_info *info);
171
172 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
173                                           const struct pci_device_id *ent);
174 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
175 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
176
177 /*
178  * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
179  * mobile chipsets from being registered.
180  */
181 #if DETECT_VGA_CLASS_ONLY
182 #define INTELFB_CLASS_MASK ~0 << 8
183 #else
184 #define INTELFB_CLASS_MASK 0
185 #endif
186
187 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
188         { 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 },
189         { 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 },
190         { 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 },
191         { 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 },
192         { 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 },
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_check_var =         intelfb_check_var,
203         .fb_set_par =           intelfb_set_par,
204         .fb_setcolreg =         intelfb_setcolreg,
205         .fb_blank =             intelfb_blank,
206         .fb_pan_display =       intelfb_pan_display,
207         .fb_fillrect  =         intelfb_fillrect,
208         .fb_copyarea  =         intelfb_copyarea,
209         .fb_imageblit =         intelfb_imageblit,
210         .fb_cursor =            intelfb_cursor,
211         .fb_sync =              intelfb_sync,
212         .fb_ioctl =             intelfb_ioctl
213 };
214
215 /* PCI driver module table */
216 static struct pci_driver intelfb_driver = {
217         .name =         "intelfb",
218         .id_table =     intelfb_pci_table,
219         .probe =        intelfb_pci_register,
220         .remove =       __devexit_p(intelfb_pci_unregister)
221 };
222
223 /* Module description/parameters */
224 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
225               "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
226 MODULE_DESCRIPTION(
227         "Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS " chipsets");
228 MODULE_LICENSE("Dual BSD/GPL");
229 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
230
231 static int accel        = 1;
232 static int vram         = 4;
233 static int hwcursor     = 1;
234 static int mtrr         = 1;
235 static int fixed        = 0;
236 static int noinit       = 0;
237 static int noregister   = 0;
238 static int probeonly    = 0;
239 static int idonly       = 0;
240 static int bailearly    = 0;
241 static int voffset      = 48;
242 static char *mode       = NULL;
243
244 module_param(accel, bool, S_IRUGO);
245 MODULE_PARM_DESC(accel, "Enable console acceleration");
246 module_param(vram, int, S_IRUGO);
247 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
248 module_param(voffset, int, S_IRUGO);
249 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
250 module_param(hwcursor, bool, S_IRUGO);
251 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
252 module_param(mtrr, bool, S_IRUGO);
253 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
254 module_param(fixed, bool, S_IRUGO);
255 MODULE_PARM_DESC(fixed, "Disable mode switching");
256 module_param(noinit, bool, 0);
257 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
258 module_param(noregister, bool, 0);
259 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
260 module_param(probeonly, bool, 0);
261 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
262 module_param(idonly, bool, 0);
263 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
264 module_param(bailearly, bool, 0);
265 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
266 module_param(mode, charp, S_IRUGO);
267 MODULE_PARM_DESC(mode,
268                  "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
269
270 #ifndef MODULE
271 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
272 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name), NULL, 0)
273 #define OPT_STRVAL(opt, name) (opt + strlen(name))
274
275 static __inline__ char *
276 get_opt_string(const char *this_opt, const char *name)
277 {
278         const char *p;
279         int i;
280         char *ret;
281
282         p = OPT_STRVAL(this_opt, name);
283         i = 0;
284         while (p[i] && p[i] != ' ' && p[i] != ',')
285                 i++;
286         ret = kmalloc(i + 1, GFP_KERNEL);
287         if (ret) {
288                 strncpy(ret, p, i);
289                 ret[i] = '\0';
290         }
291         return ret;
292 }
293
294 static __inline__ int
295 get_opt_int(const char *this_opt, const char *name, int *ret)
296 {
297         if (!ret)
298                 return 0;
299
300         if (!OPT_EQUAL(this_opt, name))
301                 return 0;
302
303         *ret = OPT_INTVAL(this_opt, name);
304         return 1;
305 }
306
307 static __inline__ int
308 get_opt_bool(const char *this_opt, const char *name, int *ret)
309 {
310         if (!ret)
311                 return 0;
312
313         if (OPT_EQUAL(this_opt, name)) {
314                 if (this_opt[strlen(name)] == '=')
315                         *ret = simple_strtoul(this_opt + strlen(name) + 1,
316                                               NULL, 0);
317                 else
318                         *ret = 1;
319         } else {
320                 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
321                         *ret = 0;
322                 else
323                         return 0;
324         }
325         return 1;
326 }
327
328 static int __init
329 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
381 intelfb_init(void)
382 {
383 #ifndef MODULE
384         char *option = NULL;
385 #endif
386
387         DBG_MSG("intelfb_init\n");
388
389         INF_MSG("Framebuffer driver for "
390                 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
391         INF_MSG("Version " INTELFB_VERSION "\n");
392
393         if (idonly)
394                 return -ENODEV;
395
396 #ifndef MODULE
397         if (fb_get_options("intelfb", &option))
398                 return -ENODEV;
399         intelfb_setup(option);
400 #endif
401
402         return pci_register_driver(&intelfb_driver);
403 }
404
405 static void __exit
406 intelfb_exit(void)
407 {
408         DBG_MSG("intelfb_exit\n");
409         pci_unregister_driver(&intelfb_driver);
410 }
411
412 module_init(intelfb_init);
413 module_exit(intelfb_exit);
414
415 /***************************************************************
416  *                     mtrr support functions                  *
417  ***************************************************************/
418
419 #ifdef CONFIG_MTRR
420 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
421 {
422         dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
423                                    dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
424         if (dinfo->mtrr_reg < 0) {
425                 ERR_MSG("unable to set MTRR\n");
426                 return;
427         }
428         dinfo->has_mtrr = 1;
429 }
430 static inline void unset_mtrr(struct intelfb_info *dinfo)
431 {
432         if (dinfo->has_mtrr)
433                 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
434                          dinfo->aperture.size);
435 }
436 #else
437 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
438
439 #define unset_mtrr(x) do { } while (0)
440 #endif /* CONFIG_MTRR */
441
442 /***************************************************************
443  *                        driver init / cleanup                *
444  ***************************************************************/
445
446 static void
447 cleanup(struct intelfb_info *dinfo)
448 {
449         DBG_MSG("cleanup\n");
450
451         if (!dinfo)
452                 return;
453
454         fb_dealloc_cmap(&dinfo->info->cmap);
455         kfree(dinfo->info->pixmap.addr);
456
457         if (dinfo->registered)
458                 unregister_framebuffer(dinfo->info);
459
460         unset_mtrr(dinfo);
461
462         if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
463                 agp_unbind_memory(dinfo->gtt_fb_mem);
464                 agp_free_memory(dinfo->gtt_fb_mem);
465         }
466         if (dinfo->gtt_cursor_mem) {
467                 agp_unbind_memory(dinfo->gtt_cursor_mem);
468                 agp_free_memory(dinfo->gtt_cursor_mem);
469         }
470         if (dinfo->gtt_ring_mem) {
471                 agp_unbind_memory(dinfo->gtt_ring_mem);
472                 agp_free_memory(dinfo->gtt_ring_mem);
473         }
474
475         if (dinfo->mmio_base)
476                 iounmap((void __iomem *)dinfo->mmio_base);
477         if (dinfo->aperture.virtual)
478                 iounmap((void __iomem *)dinfo->aperture.virtual);
479
480         if (dinfo->mmio_base_phys)
481                 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
482         if (dinfo->aperture.physical)
483                 release_mem_region(dinfo->aperture.physical,
484                                    dinfo->aperture.size);
485         framebuffer_release(dinfo->info);
486 }
487
488 #define bailout(dinfo) do {                                             \
489         DBG_MSG("bailout\n");                                           \
490         cleanup(dinfo);                                                 \
491         INF_MSG("Not going to register framebuffer, exiting...\n");     \
492         return -ENODEV;                                                 \
493 } while (0)
494
495
496 static int __devinit
497 intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
498 {
499         struct fb_info *info;
500         struct intelfb_info *dinfo;
501         int i, j, err, dvo;
502         int aperture_size, stolen_size;
503         struct agp_kern_info gtt_info;
504         int agp_memtype;
505         const char *s;
506         struct agp_bridge_data *bridge;
507         int aperture_bar = 0;
508         int mmio_bar = 1;
509         int offset;
510
511         DBG_MSG("intelfb_pci_register\n");
512
513         num_registered++;
514         if (num_registered != 1) {
515                 ERR_MSG("Attempted to register %d devices "
516                         "(should be only 1).\n", num_registered);
517                 return -ENODEV;
518         }
519
520         info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
521         if (!info) {
522                 ERR_MSG("Could not allocate memory for intelfb_info.\n");
523                 return -ENODEV;
524         }
525         if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
526                 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
527                 goto err_out_cmap;
528                 return -ENODEV;
529         }
530
531         dinfo = info->par;
532         dinfo->info  = info;
533         dinfo->fbops = &intel_fb_ops;
534         dinfo->pdev  = pdev;
535
536         /* Reserve pixmap space. */
537         info->pixmap.addr = kmalloc(64 * 1024, GFP_KERNEL);
538         if (info->pixmap.addr == NULL) {
539                 ERR_MSG("Cannot reserve pixmap memory.\n");
540                 goto err_out_pixmap;
541         }
542         memset(info->pixmap.addr, 0, 64 * 1024);
543
544         /* set early this option because it could be changed by tv encoder
545            driver */
546         dinfo->fixed_mode = fixed;
547
548         /* Enable device. */
549         if ((err = pci_enable_device(pdev))) {
550                 ERR_MSG("Cannot enable device.\n");
551                 cleanup(dinfo);
552                 return -ENODEV;
553         }
554
555         /* Set base addresses. */
556         if (ent->device == PCI_DEVICE_ID_INTEL_915G) {
557                 aperture_bar = 2;
558                 mmio_bar = 0;
559                 /* Disable HW cursor on 915G (not implemented yet) */
560                 hwcursor = 0;
561         }
562         dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
563         dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
564         dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
565         DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
566                 (unsigned long long)pci_resource_start(pdev, aperture_bar),
567                 (unsigned long long)pci_resource_len(pdev, aperture_bar),
568                 (unsigned long long)pci_resource_start(pdev, mmio_bar),
569                 (unsigned long long)pci_resource_len(pdev, mmio_bar));
570
571         /* Reserve the fb and MMIO regions */
572         if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
573                                 INTELFB_MODULE_NAME)) {
574                 ERR_MSG("Cannot reserve FB region.\n");
575                 cleanup(dinfo);
576                 return -ENODEV;
577         }
578         if (!request_mem_region(dinfo->mmio_base_phys,
579                                 INTEL_REG_SIZE,
580                                 INTELFB_MODULE_NAME)) {
581                 ERR_MSG("Cannot reserve MMIO region.\n");
582                 cleanup(dinfo);
583                 return -ENODEV;
584         }
585
586         /* Map the fb and MMIO regions */
587         dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
588                 (dinfo->aperture.physical, dinfo->aperture.size);
589         if (!dinfo->aperture.virtual) {
590                 ERR_MSG("Cannot remap FB region.\n");
591                 cleanup(dinfo);
592                 return -ENODEV;
593         }
594         dinfo->mmio_base =
595                 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
596                                                INTEL_REG_SIZE);
597         if (!dinfo->mmio_base) {
598                 ERR_MSG("Cannot remap MMIO region.\n");
599                 cleanup(dinfo);
600                 return -ENODEV;
601         }
602
603         /* Get the chipset info. */
604         dinfo->pci_chipset = pdev->device;
605
606         if (intelfbhw_get_chipset(pdev, &dinfo->name, &dinfo->chipset,
607                                   &dinfo->mobile)) {
608                 cleanup(dinfo);
609                 return -ENODEV;
610         }
611
612         if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
613                 cleanup(dinfo);
614                 return -ENODEV;
615         }
616
617         INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
618                 "stolen memory %dkB\n",
619                 pdev->bus->number, PCI_SLOT(pdev->devfn),
620                 PCI_FUNC(pdev->devfn), dinfo->name,
621                 BtoMB(aperture_size), BtoKB(stolen_size));
622
623         /* Set these from the options. */
624         dinfo->accel    = accel;
625         dinfo->hwcursor = hwcursor;
626
627         if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
628                 INF_MSG("Acceleration is not supported for the %s chipset.\n",
629                         dinfo->name);
630                 dinfo->accel = 0;
631         }
632
633         /* Framebuffer parameters - Use all the stolen memory if >= vram */
634         if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
635                 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
636                 dinfo->fbmem_gart = 0;
637         } else {
638                 dinfo->fb.size =  MB(vram);
639                 dinfo->fbmem_gart = 1;
640         }
641
642         /* Allocate space for the ring buffer and HW cursor if enabled. */
643         if (dinfo->accel) {
644                 dinfo->ring.size = RINGBUFFER_SIZE;
645                 dinfo->ring_tail_mask = dinfo->ring.size - 1;
646         }
647         if (dinfo->hwcursor) {
648                 dinfo->cursor.size = HW_CURSOR_SIZE;
649         }
650
651         /* Use agpgart to manage the GATT */
652         if (!(bridge = agp_backend_acquire(pdev))) {
653                 ERR_MSG("cannot acquire agp\n");
654                 cleanup(dinfo);
655                 return -ENODEV;
656         }
657
658         /* get the current gatt info */
659         if (agp_copy_info(bridge, &gtt_info)) {
660                 ERR_MSG("cannot get agp info\n");
661                 agp_backend_release(bridge);
662                 cleanup(dinfo);
663                 return -ENODEV;
664         }
665
666         if (MB(voffset) < stolen_size)
667                 offset = (stolen_size >> 12);
668         else
669                 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
670
671         /* set the mem offsets - set them after the already used pages */
672         if (dinfo->accel) {
673                 dinfo->ring.offset = offset + gtt_info.current_memory;
674         }
675         if (dinfo->hwcursor) {
676                 dinfo->cursor.offset = offset +
677                         + gtt_info.current_memory + (dinfo->ring.size >> 12);
678         }
679         if (dinfo->fbmem_gart) {
680                 dinfo->fb.offset = offset +
681                         + gtt_info.current_memory + (dinfo->ring.size >> 12)
682                         + (dinfo->cursor.size >> 12);
683         }
684
685         /* Allocate memories (which aren't stolen) */
686         if (dinfo->accel) {
687                 if (!(dinfo->gtt_ring_mem =
688                       agp_allocate_memory(bridge, dinfo->ring.size >> 12,
689                                           AGP_NORMAL_MEMORY))) {
690                         ERR_MSG("cannot allocate ring buffer memory\n");
691                         agp_backend_release(bridge);
692                         cleanup(dinfo);
693                         return -ENOMEM;
694                 }
695                 if (agp_bind_memory(dinfo->gtt_ring_mem,
696                                     dinfo->ring.offset)) {
697                         ERR_MSG("cannot bind ring buffer memory\n");
698                         agp_backend_release(bridge);
699                         cleanup(dinfo);
700                         return -EBUSY;
701                 }
702                 dinfo->ring.physical = dinfo->aperture.physical
703                         + (dinfo->ring.offset << 12);
704                 dinfo->ring.virtual  = dinfo->aperture.virtual
705                         + (dinfo->ring.offset << 12);
706                 dinfo->ring_head = dinfo->ring.virtual;
707         }
708         if (dinfo->hwcursor) {
709                 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
710                         : AGP_NORMAL_MEMORY;
711                 if (!(dinfo->gtt_cursor_mem =
712                       agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
713                                           agp_memtype))) {
714                         ERR_MSG("cannot allocate cursor memory\n");
715                         agp_backend_release(bridge);
716                         cleanup(dinfo);
717                         return -ENOMEM;
718                 }
719                 if (agp_bind_memory(dinfo->gtt_cursor_mem,
720                                     dinfo->cursor.offset)) {
721                         ERR_MSG("cannot bind cursor memory\n");
722                         agp_backend_release(bridge);
723                         cleanup(dinfo);
724                         return -EBUSY;
725                 }
726                 if (dinfo->mobile)
727                         dinfo->cursor.physical
728                                 = dinfo->gtt_cursor_mem->physical;
729                 else
730                         dinfo->cursor.physical = dinfo->aperture.physical
731                                 + (dinfo->cursor.offset << 12);
732                 dinfo->cursor.virtual = dinfo->aperture.virtual
733                         + (dinfo->cursor.offset << 12);
734         }
735         if (dinfo->fbmem_gart) {
736                 if (!(dinfo->gtt_fb_mem =
737                       agp_allocate_memory(bridge, dinfo->fb.size >> 12,
738                                           AGP_NORMAL_MEMORY))) {
739                         WRN_MSG("cannot allocate framebuffer memory - use "
740                                 "the stolen one\n");
741                         dinfo->fbmem_gart = 0;
742                 }
743                 if (agp_bind_memory(dinfo->gtt_fb_mem,
744                                     dinfo->fb.offset)) {
745                         WRN_MSG("cannot bind framebuffer memory - use "
746                                 "the stolen one\n");
747                         dinfo->fbmem_gart = 0;
748                 }
749         }
750
751         /* update framebuffer memory parameters */
752         if (!dinfo->fbmem_gart)
753                 dinfo->fb.offset = 0;   /* starts at offset 0 */
754         dinfo->fb.physical = dinfo->aperture.physical
755                 + (dinfo->fb.offset << 12);
756         dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
757         dinfo->fb_start = dinfo->fb.offset << 12;
758
759         /* release agpgart */
760         agp_backend_release(bridge);
761
762         if (mtrr)
763                 set_mtrr(dinfo);
764
765         DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%x)\n",
766                 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
767                 (u32 __iomem ) dinfo->fb.virtual);
768         DBG_MSG("MMIO: 0x%x/0x%x (0x%x)\n",
769                 dinfo->mmio_base_phys, INTEL_REG_SIZE,
770                 (u32 __iomem) dinfo->mmio_base);
771         DBG_MSG("ring buffer: 0x%x/0x%x (0x%x)\n",
772                 dinfo->ring.physical, dinfo->ring.size,
773                 (u32 __iomem ) dinfo->ring.virtual);
774         DBG_MSG("HW cursor: 0x%x/0x%x (0x%x) (offset 0x%x) (phys 0x%x)\n",
775                 dinfo->cursor.physical, dinfo->cursor.size,
776                 (u32 __iomem ) dinfo->cursor.virtual, dinfo->cursor.offset,
777                 dinfo->cursor.physical);
778
779         DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
780                 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
781         DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
782
783         if (probeonly)
784                 bailout(dinfo);
785
786         /*
787          * Check if the LVDS port or any DVO ports are enabled.  If so,
788          * don't allow mode switching
789          */
790         dvo = intelfbhw_check_non_crt(dinfo);
791         if (dvo) {
792                 dinfo->fixed_mode = 1;
793                 WRN_MSG("Non-CRT device is enabled ( ");
794                 i = 0;
795                 while (dvo) {
796                         if (dvo & 1) {
797                                 s = intelfbhw_dvo_to_string(1 << i);
798                                 if (s)
799                                         printk("%s ", s);
800                         }
801                         dvo >>= 1;
802                         ++i;
803                 }
804                 printk(").  Disabling mode switching.\n");
805         }
806
807         if (bailearly == 1)
808                 bailout(dinfo);
809
810         if (FIXED_MODE(dinfo) && ORIG_VIDEO_ISVGA != VIDEO_TYPE_VLFB) {
811                 ERR_MSG("Video mode must be programmed at boot time.\n");
812                 cleanup(dinfo);
813                 return -ENODEV;
814         }
815
816         if (bailearly == 2)
817                 bailout(dinfo);
818
819         /* Initialise dinfo and related data. */
820         /* If an initial mode was programmed at boot time, get its details. */
821         if (ORIG_VIDEO_ISVGA == VIDEO_TYPE_VLFB)
822                 get_initial_mode(dinfo);
823
824         if (bailearly == 3)
825                 bailout(dinfo);
826
827         if (FIXED_MODE(dinfo)) {
828                 /* remap fb address */
829                 update_dinfo(dinfo, &dinfo->initial_var);
830         }
831
832         if (bailearly == 4)
833                 bailout(dinfo);
834
835
836         if (intelfb_set_fbinfo(dinfo)) {
837                 cleanup(dinfo);
838                 return -ENODEV;
839         }
840
841         if (bailearly == 5)
842                 bailout(dinfo);
843
844         for (i = 0; i < 16; i++) {
845                 j = color_table[i];
846                 dinfo->palette[i].red = default_red[j];
847                 dinfo->palette[i].green = default_grn[j];
848                 dinfo->palette[i].blue = default_blu[j];
849         }
850
851         if (bailearly == 6)
852                 bailout(dinfo);
853
854         pci_set_drvdata(pdev, dinfo);
855
856         /* Save the initial register state. */
857         i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
858                                     bailearly > 6 ? bailearly - 6 : 0);
859         if (i != 0) {
860                 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
861                 bailout(dinfo);
862         }
863
864         intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
865
866         if (bailearly == 18)
867                 bailout(dinfo);
868
869         /* Cursor initialisation */
870         if (dinfo->hwcursor) {
871                 intelfbhw_cursor_init(dinfo);
872                 intelfbhw_cursor_reset(dinfo);
873         }
874
875         if (bailearly == 19)
876                 bailout(dinfo);
877
878         /* 2d acceleration init */
879         if (dinfo->accel)
880                 intelfbhw_2d_start(dinfo);
881
882         if (bailearly == 20)
883                 bailout(dinfo);
884
885         if (noregister)
886                 bailout(dinfo);
887
888         if (register_framebuffer(dinfo->info) < 0) {
889                 ERR_MSG("Cannot register framebuffer.\n");
890                 cleanup(dinfo);
891                 return -ENODEV;
892         }
893
894         dinfo->registered = 1;
895
896         return 0;
897
898 err_out_pixmap:
899         fb_dealloc_cmap(&info->cmap);
900 err_out_cmap:
901         framebuffer_release(info);
902         return -ENODEV;
903 }
904
905 static void __devexit
906 intelfb_pci_unregister(struct pci_dev *pdev)
907 {
908         struct intelfb_info *dinfo = pci_get_drvdata(pdev);
909
910         DBG_MSG("intelfb_pci_unregister\n");
911
912         if (!dinfo)
913                 return;
914
915         cleanup(dinfo);
916
917         pci_set_drvdata(pdev, NULL);
918 }
919
920 /***************************************************************
921  *                       helper functions                      *
922  ***************************************************************/
923
924 int __inline__
925 intelfb_var_to_depth(const struct fb_var_screeninfo *var)
926 {
927         DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
928                 var->bits_per_pixel, var->green.length);
929
930         switch (var->bits_per_pixel) {
931         case 16:
932                 return (var->green.length == 6) ? 16 : 15;
933         case 32:
934                 return 24;
935         default:
936                 return var->bits_per_pixel;
937         }
938 }
939
940
941 static __inline__ int
942 var_to_refresh(const struct fb_var_screeninfo *var)
943 {
944         int xtot = var->xres + var->left_margin + var->right_margin +
945                    var->hsync_len;
946         int ytot = var->yres + var->upper_margin + var->lower_margin +
947                    var->vsync_len;
948
949         return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
950 }
951
952 /***************************************************************
953  *                Various intialisation functions              *
954  ***************************************************************/
955
956 static void __devinit
957 get_initial_mode(struct intelfb_info *dinfo)
958 {
959         struct fb_var_screeninfo *var;
960         int xtot, ytot;
961
962         DBG_MSG("get_initial_mode\n");
963
964         dinfo->initial_vga = 1;
965         dinfo->initial_fb_base = screen_info.lfb_base;
966         dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
967         dinfo->initial_pitch = screen_info.lfb_linelength;
968
969         var = &dinfo->initial_var;
970         memset(var, 0, sizeof(*var));
971         var->xres = screen_info.lfb_width;
972         var->yres = screen_info.lfb_height;
973         var->bits_per_pixel = screen_info.lfb_depth;
974         switch (screen_info.lfb_depth) {
975         case 15:
976                 var->bits_per_pixel = 16;
977                 break;
978         case 24:
979                 var->bits_per_pixel = 32;
980                 break;
981         }
982
983         DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
984                 dinfo->initial_fb_base, dinfo->initial_video_ram,
985                 BtoKB(dinfo->initial_video_ram));
986
987         DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
988                 var->xres, var->yres, var->bits_per_pixel,
989                 dinfo->initial_pitch);
990
991         /* Dummy timing values (assume 60Hz) */
992         var->left_margin = (var->xres / 8) & 0xf8;
993         var->right_margin = 32;
994         var->upper_margin = 16;
995         var->lower_margin = 4;
996         var->hsync_len = (var->xres / 8) & 0xf8;
997         var->vsync_len = 4;
998
999         xtot = var->xres + var->left_margin +
1000                 var->right_margin + var->hsync_len;
1001         ytot = var->yres + var->upper_margin +
1002                 var->lower_margin + var->vsync_len;
1003         var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1004
1005         var->height = -1;
1006         var->width = -1;
1007
1008         if (var->bits_per_pixel > 8) {
1009                 var->red.offset = screen_info.red_pos;
1010                 var->red.length = screen_info.red_size;
1011                 var->green.offset = screen_info.green_pos;
1012                 var->green.length = screen_info.green_size;
1013                 var->blue.offset = screen_info.blue_pos;
1014                 var->blue.length = screen_info.blue_size;
1015                 var->transp.offset = screen_info.rsvd_pos;
1016                 var->transp.length = screen_info.rsvd_size;
1017         } else {
1018                 var->red.length = 8;
1019                 var->green.length = 8;
1020                 var->blue.length = 8;
1021         }
1022 }
1023
1024 static int __devinit
1025 intelfb_init_var(struct intelfb_info *dinfo)
1026 {
1027         struct fb_var_screeninfo *var;
1028         int msrc = 0;
1029
1030         DBG_MSG("intelfb_init_var\n");
1031
1032         var = &dinfo->info->var;
1033         if (FIXED_MODE(dinfo)) {
1034                 memcpy(var, &dinfo->initial_var,
1035                        sizeof(struct fb_var_screeninfo));
1036                 msrc = 5;
1037         } else {
1038                 if (mode) {
1039                         msrc = fb_find_mode(var, dinfo->info, mode,
1040                                             vesa_modes, VESA_MODEDB_SIZE,
1041                                             NULL, 0);
1042                         if (msrc)
1043                                 msrc |= 8;
1044                 }
1045                 if (!msrc) {
1046                         msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1047                                             vesa_modes, VESA_MODEDB_SIZE,
1048                                             NULL, 0);
1049                 }
1050         }
1051
1052         if (!msrc) {
1053                 ERR_MSG("Cannot find a suitable video mode.\n");
1054                 return 1;
1055         }
1056
1057         INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1058                 var->bits_per_pixel, var_to_refresh(var));
1059
1060         DBG_MSG("Initial video mode is from %d.\n", msrc);
1061
1062 #if ALLOCATE_FOR_PANNING
1063         /* Allow use of half of the video ram for panning */
1064         var->xres_virtual = var->xres;
1065         var->yres_virtual =
1066                 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1067         if (var->yres_virtual < var->yres)
1068                 var->yres_virtual = var->yres;
1069 #else
1070         var->yres_virtual = var->yres;
1071 #endif
1072
1073         if (dinfo->accel)
1074                 var->accel_flags |= FB_ACCELF_TEXT;
1075         else
1076                 var->accel_flags &= ~FB_ACCELF_TEXT;
1077
1078         return 0;
1079 }
1080
1081 static int __devinit
1082 intelfb_set_fbinfo(struct intelfb_info *dinfo)
1083 {
1084         struct fb_info *info = dinfo->info;
1085
1086         DBG_MSG("intelfb_set_fbinfo\n");
1087
1088         info->flags = FBINFO_FLAG_DEFAULT;
1089         info->fbops = &intel_fb_ops;
1090         info->pseudo_palette = dinfo->pseudo_palette;
1091
1092         info->pixmap.size = 64*1024;
1093         info->pixmap.buf_align = 8;
1094         info->pixmap.access_align = 32;
1095         info->pixmap.flags = FB_PIXMAP_SYSTEM;
1096
1097         if (intelfb_init_var(dinfo))
1098                 return 1;
1099
1100         info->pixmap.scan_align = 1;
1101
1102         update_dinfo(dinfo, &info->var);
1103
1104         return 0;
1105 }
1106
1107 /* Update dinfo to match the active video mode. */
1108 static void
1109 update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var)
1110 {
1111         DBG_MSG("update_dinfo\n");
1112
1113         dinfo->bpp = var->bits_per_pixel;
1114         dinfo->depth = intelfb_var_to_depth(var);
1115         dinfo->xres = var->xres;
1116         dinfo->yres = var->xres;
1117         dinfo->pixclock = var->pixclock;
1118
1119         intelfb_get_fix(&dinfo->info->fix, dinfo->info);
1120
1121         switch (dinfo->bpp) {
1122         case 8:
1123                 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1124                 dinfo->pitch = var->xres_virtual;
1125                 break;
1126         case 16:
1127                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1128                 dinfo->pitch = var->xres_virtual * 2;
1129                 break;
1130         case 32:
1131                 dinfo->visual = FB_VISUAL_TRUECOLOR;
1132                 dinfo->pitch = var->xres_virtual * 4;
1133                 break;
1134         }
1135
1136         /* Make sure the line length is a aligned correctly. */
1137         dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1138
1139         if (FIXED_MODE(dinfo))
1140                 dinfo->pitch = dinfo->initial_pitch;
1141
1142         dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1143         dinfo->info->fix.line_length = dinfo->pitch;
1144         dinfo->info->fix.visual = dinfo->visual;
1145 }
1146
1147 /* fbops functions */
1148
1149 static int
1150 intelfb_get_fix(struct fb_fix_screeninfo *fix, struct fb_info *info)
1151 {
1152         struct intelfb_info *dinfo = GET_DINFO(info);
1153
1154         DBG_MSG("intelfb_get_fix\n");
1155
1156         memset(fix, 0, sizeof(*fix));
1157         strcpy(fix->id, dinfo->name);
1158         fix->smem_start = dinfo->fb.physical;
1159         fix->smem_len = dinfo->fb.size;
1160         fix->type = FB_TYPE_PACKED_PIXELS;
1161         fix->type_aux = 0;
1162         fix->visual = dinfo->visual;
1163         fix->xpanstep = 8;
1164         fix->ypanstep = 1;
1165         fix->ywrapstep = 0;
1166         fix->line_length = dinfo->pitch;
1167         fix->mmio_start = dinfo->mmio_base_phys;
1168         fix->mmio_len = INTEL_REG_SIZE;
1169         fix->accel = FB_ACCEL_I830;
1170         return 0;
1171 }
1172
1173 /***************************************************************
1174  *                       fbdev interface                       *
1175  ***************************************************************/
1176
1177 static int
1178 intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1179 {
1180         int change_var = 0;
1181         struct fb_var_screeninfo v;
1182         struct intelfb_info *dinfo;
1183         static int first = 1;
1184
1185         DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1186
1187         dinfo = GET_DINFO(info);
1188
1189         if (intelfbhw_validate_mode(dinfo, var) != 0)
1190                 return -EINVAL;
1191
1192         v = *var;
1193
1194         /* Check for a supported bpp. */
1195         if (v.bits_per_pixel <= 8) {
1196                 v.bits_per_pixel = 8;
1197         } else if (v.bits_per_pixel <= 16) {
1198                 if (v.bits_per_pixel == 16)
1199                         v.green.length = 6;
1200                 v.bits_per_pixel = 16;
1201         } else if (v.bits_per_pixel <= 32) {
1202                 v.bits_per_pixel = 32;
1203         } else
1204                 return -EINVAL;
1205
1206         change_var = ((info->var.xres != var->xres) ||
1207                       (info->var.yres != var->yres) ||
1208                       (info->var.xres_virtual != var->xres_virtual) ||
1209                       (info->var.yres_virtual != var->yres_virtual) ||
1210                       (info->var.bits_per_pixel != var->bits_per_pixel) ||
1211                       memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1212                       memcmp(&info->var.green, &var->green,
1213                              sizeof(var->green)) ||
1214                       memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1215
1216         if (FIXED_MODE(dinfo) &&
1217             (change_var ||
1218              var->yres_virtual > dinfo->initial_var.yres_virtual ||
1219              var->yres_virtual < dinfo->initial_var.yres ||
1220              var->xoffset || var->nonstd)) {
1221                 if (first) {
1222                         ERR_MSG("Changing the video mode is not supported.\n");
1223                         first = 0;
1224                 }
1225                 return -EINVAL;
1226         }
1227
1228         switch (intelfb_var_to_depth(&v)) {
1229         case 8:
1230                 v.red.offset = v.green.offset = v.blue.offset = 0;
1231                 v.red.length = v.green.length = v.blue.length = 8;
1232                 v.transp.offset = v.transp.length = 0;
1233                 break;
1234         case 15:
1235                 v.red.offset = 10;
1236                 v.green.offset = 5;
1237                 v.blue.offset = 0;
1238                 v.red.length = v.green.length = v.blue.length = 5;
1239                 v.transp.offset = v.transp.length = 0;
1240                 break;
1241         case 16:
1242                 v.red.offset = 11;
1243                 v.green.offset = 5;
1244                 v.blue.offset = 0;
1245                 v.red.length = 5;
1246                 v.green.length = 6;
1247                 v.blue.length = 5;
1248                 v.transp.offset = v.transp.length = 0;
1249                 break;
1250         case 24:
1251                 v.red.offset = 16;
1252                 v.green.offset = 8;
1253                 v.blue.offset = 0;
1254                 v.red.length = v.green.length = v.blue.length = 8;
1255                 v.transp.offset = v.transp.length = 0;
1256                 break;
1257         case 32:
1258                 v.red.offset = 16;
1259                 v.green.offset = 8;
1260                 v.blue.offset = 0;
1261                 v.red.length = v.green.length = v.blue.length = 8;
1262                 v.transp.offset = 24;
1263                 v.transp.length = 8;
1264                 break;
1265         }
1266
1267         if (v.xoffset < 0)
1268                 v.xoffset = 0;
1269         if (v.yoffset < 0)
1270                 v.yoffset = 0;
1271
1272         if (v.xoffset > v.xres_virtual - v.xres)
1273                 v.xoffset = v.xres_virtual - v.xres;
1274         if (v.yoffset > v.yres_virtual - v.yres)
1275                 v.yoffset = v.yres_virtual - v.yres;
1276
1277         v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1278                           v.transp.msb_right = 0;
1279
1280         *var = v;
1281
1282         return 0;
1283 }
1284
1285 static int
1286 intelfb_set_par(struct fb_info *info)
1287 {
1288         struct intelfb_hwstate *hw;
1289         struct intelfb_info *dinfo = GET_DINFO(info);
1290
1291         if (FIXED_MODE(dinfo)) {
1292                 ERR_MSG("Changing the video mode is not supported.\n");
1293                 return -EINVAL;
1294         }
1295
1296         hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1297         if (!hw)
1298                 return -ENOMEM;
1299
1300         DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1301                 info->var.yres, info->var.bits_per_pixel);
1302
1303         intelfb_blank(FB_BLANK_POWERDOWN, info);
1304
1305         if (ACCEL(dinfo, info))
1306                 intelfbhw_2d_stop(dinfo);
1307
1308         memcpy(hw, &dinfo->save_state, sizeof(*hw));
1309         if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1310                 goto invalid_mode;
1311         if (intelfbhw_program_mode(dinfo, hw, 0))
1312                 goto invalid_mode;
1313
1314 #if REGDUMP > 0
1315         intelfbhw_read_hw_state(dinfo, hw, 0);
1316         intelfbhw_print_hw_state(dinfo, hw);
1317 #endif
1318
1319         update_dinfo(dinfo, &info->var);
1320
1321         if (ACCEL(dinfo, info))
1322                 intelfbhw_2d_start(dinfo);
1323
1324         intelfb_pan_display(&info->var, info);
1325
1326         intelfb_blank(FB_BLANK_UNBLANK, info);
1327
1328         if (ACCEL(dinfo, info)) {
1329                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1330                 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1331                 FBINFO_HWACCEL_IMAGEBLIT;
1332         } else {
1333                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1334         }
1335         kfree(hw);
1336         return 0;
1337 invalid_mode:
1338         kfree(hw);
1339         return -EINVAL;
1340 }
1341
1342 static int
1343 intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1344                   unsigned blue, unsigned transp, struct fb_info *info)
1345 {
1346         struct intelfb_info *dinfo = GET_DINFO(info);
1347
1348 #if VERBOSE > 0
1349         DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1350 #endif
1351
1352         if (regno > 255)
1353                 return 1;
1354
1355         switch (dinfo->depth) {
1356         case 8:
1357                 {
1358                         red >>= 8;
1359                         green >>= 8;
1360                         blue >>= 8;
1361
1362                         dinfo->palette[regno].red = red;
1363                         dinfo->palette[regno].green = green;
1364                         dinfo->palette[regno].blue = blue;
1365
1366                         intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1367                                             transp);
1368                 }
1369                 break;
1370         case 15:
1371                 dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1372                                                ((green & 0xf800) >>  6) |
1373                                                ((blue & 0xf800) >> 11);
1374                 break;
1375         case 16:
1376                 dinfo->pseudo_palette[regno] = (red & 0xf800) |
1377                                                ((green & 0xfc00) >>  5) |
1378                                                ((blue  & 0xf800) >> 11);
1379                 break;
1380         case 24:
1381                 dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1382                                                (green & 0xff00) |
1383                                                ((blue  & 0xff00) >> 8);
1384                 break;
1385         }
1386         return 0;
1387 }
1388
1389 static int
1390 intelfb_blank(int blank, struct fb_info *info)
1391 {
1392         intelfbhw_do_blank(blank, info);
1393         return 0;
1394 }
1395
1396 static int
1397 intelfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1398 {
1399         intelfbhw_pan_display(var, info);
1400         return 0;
1401 }
1402
1403 /* When/if we have our own ioctls. */
1404 static int
1405 intelfb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
1406               unsigned long arg, struct fb_info *info)
1407 {
1408         int retval = 0;
1409
1410         return retval;
1411 }
1412
1413 static void
1414 intelfb_fillrect (struct fb_info *info, const struct fb_fillrect *rect)
1415 {
1416         struct intelfb_info *dinfo = GET_DINFO(info);
1417         u32 rop, color;
1418
1419 #if VERBOSE > 0
1420         DBG_MSG("intelfb_fillrect\n");
1421 #endif
1422
1423         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1424                 return cfb_fillrect(info, rect);
1425
1426         if (rect->rop == ROP_COPY)
1427                 rop = PAT_ROP_GXCOPY;
1428         else // ROP_XOR
1429                 rop = PAT_ROP_GXXOR;
1430
1431         if (dinfo->depth != 8)
1432                 color = dinfo->pseudo_palette[rect->color];
1433         else
1434                 color = rect->color;
1435
1436         intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1437                               rect->width, rect->height, color,
1438                               dinfo->pitch, info->var.bits_per_pixel,
1439                               rop);
1440 }
1441
1442 static void
1443 intelfb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
1444 {
1445         struct intelfb_info *dinfo = GET_DINFO(info);
1446
1447 #if VERBOSE > 0
1448         DBG_MSG("intelfb_copyarea\n");
1449 #endif
1450
1451         if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1452                 return cfb_copyarea(info, region);
1453
1454         intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1455                             region->dy, region->width, region->height,
1456                             dinfo->pitch, info->var.bits_per_pixel);
1457 }
1458
1459 static void
1460 intelfb_imageblit(struct fb_info *info, const struct fb_image *image)
1461 {
1462         struct intelfb_info *dinfo = GET_DINFO(info);
1463         u32 fgcolor, bgcolor;
1464
1465 #if VERBOSE > 0
1466         DBG_MSG("intelfb_imageblit\n");
1467 #endif
1468
1469         if (!ACCEL(dinfo, info) || dinfo->depth == 4
1470             || image->depth != 1)
1471                 return cfb_imageblit(info, image);
1472
1473         if (dinfo->depth != 8) {
1474                 fgcolor = dinfo->pseudo_palette[image->fg_color];
1475                 bgcolor = dinfo->pseudo_palette[image->bg_color];
1476         } else {
1477                 fgcolor = image->fg_color;
1478                 bgcolor = image->bg_color;
1479         }
1480
1481         if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1482                                     image->height, image->data,
1483                                     image->dx, image->dy,
1484                                     dinfo->pitch, info->var.bits_per_pixel))
1485                 return cfb_imageblit(info, image);
1486 }
1487
1488 static int
1489 intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1490 {
1491         struct intelfb_info *dinfo = GET_DINFO(info);
1492
1493 #if VERBOSE > 0
1494         DBG_MSG("intelfb_cursor\n");
1495 #endif
1496
1497         if (!dinfo->hwcursor)
1498                 return soft_cursor(info, cursor);
1499
1500         intelfbhw_cursor_hide(dinfo);
1501
1502         /* If XFree killed the cursor - restore it */
1503         if (INREG(CURSOR_A_BASEADDR) != dinfo->cursor.offset << 12) {
1504                 u32 fg, bg;
1505
1506                 DBG_MSG("the cursor was killed - restore it !!\n");
1507                 DBG_MSG("size %d, %d   pos %d, %d\n",
1508                         cursor->image.width, cursor->image.height,
1509                         cursor->image.dx, cursor->image.dy);
1510
1511                 intelfbhw_cursor_init(dinfo);
1512                 intelfbhw_cursor_reset(dinfo);
1513                 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1514                                         cursor->image.dy);
1515
1516                 if (dinfo->depth != 8) {
1517                         fg =dinfo->pseudo_palette[cursor->image.fg_color];
1518                         bg =dinfo->pseudo_palette[cursor->image.bg_color];
1519                 } else {
1520                         fg = cursor->image.fg_color;
1521                         bg = cursor->image.bg_color;
1522                 }
1523                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1524                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1525                                       cursor->image.height,
1526                                       dinfo->cursor_src);
1527
1528                 if (cursor->enable)
1529                         intelfbhw_cursor_show(dinfo);
1530                 return 0;
1531         }
1532
1533         if (cursor->set & FB_CUR_SETPOS) {
1534                 u32 dx, dy;
1535
1536                 dx = cursor->image.dx - info->var.xoffset;
1537                 dy = cursor->image.dy - info->var.yoffset;
1538
1539                 intelfbhw_cursor_setpos(dinfo, dx, dy);
1540         }
1541
1542         if (cursor->set & FB_CUR_SETSIZE) {
1543                 if (cursor->image.width > 64 || cursor->image.height > 64)
1544                         return -ENXIO;
1545
1546                 intelfbhw_cursor_reset(dinfo);
1547         }
1548
1549         if (cursor->set & FB_CUR_SETCMAP) {
1550                 u32 fg, bg;
1551
1552                 if (dinfo->depth != 8) {
1553                         fg = dinfo->pseudo_palette[cursor->image.fg_color];
1554                         bg = dinfo->pseudo_palette[cursor->image.bg_color];
1555                 } else {
1556                         fg = cursor->image.fg_color;
1557                         bg = cursor->image.bg_color;
1558                 }
1559
1560                 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1561         }
1562
1563         if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1564                 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1565                 u32 size = s_pitch * cursor->image.height;
1566                 u8 *dat = (u8 *) cursor->image.data;
1567                 u8 *msk = (u8 *) cursor->mask;
1568                 u8 src[64];
1569                 u32 i;
1570
1571                 if (cursor->image.depth != 1)
1572                         return -ENXIO;
1573
1574                 switch (cursor->rop) {
1575                 case ROP_XOR:
1576                         for (i = 0; i < size; i++)
1577                                 src[i] = dat[i] ^ msk[i];
1578                         break;
1579                 case ROP_COPY:
1580                 default:
1581                         for (i = 0; i < size; i++)
1582                                 src[i] = dat[i] & msk[i];
1583                         break;
1584                 }
1585
1586                 /* save the bitmap to restore it when XFree will
1587                    make the cursor dirty */
1588                 memcpy(dinfo->cursor_src, src, size);
1589
1590                 intelfbhw_cursor_load(dinfo, cursor->image.width,
1591                                       cursor->image.height, src);
1592         }
1593
1594         if (cursor->enable)
1595                 intelfbhw_cursor_show(dinfo);
1596
1597         return 0;
1598 }
1599
1600 static int
1601 intelfb_sync(struct fb_info *info)
1602 {
1603         struct intelfb_info *dinfo = GET_DINFO(info);
1604
1605 #if VERBOSE > 0
1606         DBG_MSG("intelfb_sync\n");
1607 #endif
1608
1609         if (dinfo->ring_lockup)
1610                 return 0;
1611
1612         intelfbhw_do_sync(dinfo);
1613         return 0;
1614 }
1615