1 /*
2  * intelfb
3  *
4  * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM/
5  * 945G/945GM/945GME/965G/965GM integrated graphics chips.
6  *
7  * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org>
8  *                   2004 Sylvain Meyer
9  *                   2006 David Airlie
10  *
11  * This driver consists of two parts.  The first part (intelfbdrv.c) provides
12  * the basic fbdev interfaces, is derived in part from the radeonfb and
13  * vesafb drivers, and is covered by the GPL.  The second part (intelfbhw.c)
14  * provides the code to program the hardware.  Most of it is derived from
15  * the i810/i830 XFree86 driver.  The HW-specific code is covered here
16  * under a dual license (GPL and MIT/XFree86 license).
17  *
18  * Author: David Dawes
19  *
20  */
21 
22 /* $DHD: intelfb/intelfbdrv.c,v 1.20 2003/06/27 15:17:40 dawes Exp $ */
23 
24 /*
25  * Changes:
26  *    01/2003 - Initial driver (0.1.0), no mode switching, no acceleration.
27  *		This initial version is a basic core that works a lot like
28  *		the vesafb driver.  It must be built-in to the kernel,
29  *		and the initial video mode must be set with vga=XXX at
30  *		boot time.  (David Dawes)
31  *
32  *    01/2003 - Version 0.2.0: Mode switching added, colormap support
33  *		implemented, Y panning, and soft screen blanking implemented.
34  *		No acceleration yet.  (David Dawes)
35  *
36  *    01/2003 - Version 0.3.0: fbcon acceleration support added.  Module
37  *		option handling added.  (David Dawes)
38  *
39  *    01/2003 - Version 0.4.0: fbcon HW cursor support added.  (David Dawes)
40  *
41  *    01/2003 - Version 0.4.1: Add auto-generation of built-in modes.
42  *		(David Dawes)
43  *
44  *    02/2003 - Version 0.4.2: Add check for active non-CRT devices, and
45  *		mode validation checks.  (David Dawes)
46  *
47  *    02/2003 - Version 0.4.3: Check when the VC is in graphics mode so that
48  *		acceleration is disabled while an XFree86 server is running.
49  *		(David Dawes)
50  *
51  *    02/2003 - Version 0.4.4: Monitor DPMS support.  (David Dawes)
52  *
53  *    02/2003 - Version 0.4.5: Basic XFree86 + fbdev working.  (David Dawes)
54  *
55  *    02/2003 - Version 0.5.0: Modify to work with the 2.5.32 kernel as well
56  *		as 2.4.x kernels.  (David Dawes)
57  *
58  *    02/2003 - Version 0.6.0: Split out HW-specifics into a separate file.
59  *		(David Dawes)
60  *
61  *    02/2003 - Version 0.7.0: Test on 852GM/855GM.  Acceleration and HW
62  *		cursor are disabled on this platform.  (David Dawes)
63  *
64  *    02/2003 - Version 0.7.1: Test on 845G.  Acceleration is disabled
65  *		on this platform.  (David Dawes)
66  *
67  *    02/2003 - Version 0.7.2: Test on 830M.  Acceleration and HW
68  *		cursor are disabled on this platform.  (David Dawes)
69  *
70  *    02/2003 - Version 0.7.3: Fix 8-bit modes for mobile platforms
71  *		(David Dawes)
72  *
73  *    02/2003 - Version 0.7.4: Add checks for FB and FBCON_HAS_CFB* configured
74  *		in the kernel, and add mode bpp verification and default
75  *		bpp selection based on which FBCON_HAS_CFB* are configured.
76  *		(David Dawes)
77  *
78  *    02/2003 - Version 0.7.5: Add basic package/install scripts based on the
79  *		DRI packaging scripts.  (David Dawes)
80  *
81  *    04/2003 - Version 0.7.6: Fix typo that affects builds with SMP-enabled
82  *		kernels.  (David Dawes, reported by Anupam).
83  *
84  *    06/2003 - Version 0.7.7:
85  *              Fix Makefile.kernel build problem (Tsutomu Yasuda).
86  *		Fix mis-placed #endif (2.4.21 kernel).
87  *
88  *    09/2004 - Version 0.9.0 - by Sylvain Meyer
89  *              Port to linux 2.6 kernel fbdev
90  *              Fix HW accel and HW cursor on i845G
91  *              Use of agpgart for fb memory reservation
92  *              Add mtrr support
93  *
94  *    10/2004 - Version 0.9.1
95  *              Use module_param instead of old MODULE_PARM
96  *              Some cleanup
97  *
98  *    11/2004 - Version 0.9.2
99  *              Add vram option to reserve more memory than stolen by BIOS
100  *              Fix intelfbhw_pan_display typo
101  *              Add __initdata annotations
102  *
103  *    04/2008 - Version 0.9.5
104  *              Add support for 965G/965GM. (Maik Broemme <mbroemme@plusserver.de>)
105  *
106  *    08/2008 - Version 0.9.6
107  *              Add support for 945GME. (Phil Endecott <spam_from_intelfb@chezphil.org>)
108  */
109 
110 #include <linux/module.h>
111 #include <linux/kernel.h>
112 #include <linux/errno.h>
113 #include <linux/string.h>
114 #include <linux/mm.h>
115 #include <linux/slab.h>
116 #include <linux/delay.h>
117 #include <linux/fb.h>
118 #include <linux/ioport.h>
119 #include <linux/init.h>
120 #include <linux/pci.h>
121 #include <linux/vmalloc.h>
122 #include <linux/pagemap.h>
123 #include <linux/screen_info.h>
124 
125 #include <asm/io.h>
126 
127 #include "intelfb.h"
128 #include "intelfbhw.h"
129 #include "../edid.h"
130 
131 static void get_initial_mode(struct intelfb_info *dinfo);
132 static void update_dinfo(struct intelfb_info *dinfo,
133 			 struct fb_var_screeninfo *var);
134 static int intelfb_open(struct fb_info *info, int user);
135 static int intelfb_release(struct fb_info *info, int user);
136 static int intelfb_check_var(struct fb_var_screeninfo *var,
137 			     struct fb_info *info);
138 static int intelfb_set_par(struct fb_info *info);
139 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
140 			     unsigned blue, unsigned transp,
141 			     struct fb_info *info);
142 
143 static int intelfb_blank(int blank, struct fb_info *info);
144 static int intelfb_pan_display(struct fb_var_screeninfo *var,
145 			       struct fb_info *info);
146 
147 static void intelfb_fillrect(struct fb_info *info,
148 			     const struct fb_fillrect *rect);
149 static void intelfb_copyarea(struct fb_info *info,
150 			     const struct fb_copyarea *region);
151 static void intelfb_imageblit(struct fb_info *info,
152 			      const struct fb_image *image);
153 static int intelfb_cursor(struct fb_info *info,
154 			   struct fb_cursor *cursor);
155 
156 static int intelfb_sync(struct fb_info *info);
157 
158 static int intelfb_ioctl(struct fb_info *info,
159 			 unsigned int cmd, unsigned long arg);
160 
161 static int intelfb_pci_register(struct pci_dev *pdev,
162 				const struct pci_device_id *ent);
163 static void intelfb_pci_unregister(struct pci_dev *pdev);
164 static int intelfb_set_fbinfo(struct intelfb_info *dinfo);
165 
166 /*
167  * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
168  * mobile chipsets from being registered.
169  */
170 #if DETECT_VGA_CLASS_ONLY
171 #define INTELFB_CLASS_MASK ~0 << 8
172 #else
173 #define INTELFB_CLASS_MASK 0
174 #endif
175 
176 static struct pci_device_id intelfb_pci_table[] = {
177 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_830M, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_830M },
178 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_845G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_845G },
179 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_85XGM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_85XGM },
180 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_865G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_865G },
181 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_854, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_854 },
182 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915G },
183 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915GM },
184 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945G },
185 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GM },
186 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GME, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GME },
187 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_965G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965G },
188 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_965GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965GM },
189 	{ 0, }
190 };
191 
192 /* Global data */
193 static int num_registered = 0;
194 
195 /* fb ops */
196 static struct fb_ops intel_fb_ops = {
197 	.owner =		THIS_MODULE,
198 	.fb_open =              intelfb_open,
199 	.fb_release =           intelfb_release,
200 	.fb_check_var =         intelfb_check_var,
201 	.fb_set_par =           intelfb_set_par,
202 	.fb_setcolreg =		intelfb_setcolreg,
203 	.fb_blank =		intelfb_blank,
204 	.fb_pan_display =       intelfb_pan_display,
205 	.fb_fillrect  =         intelfb_fillrect,
206 	.fb_copyarea  =         intelfb_copyarea,
207 	.fb_imageblit =         intelfb_imageblit,
208 	.fb_cursor =            intelfb_cursor,
209 	.fb_sync =              intelfb_sync,
210 	.fb_ioctl =		intelfb_ioctl
211 };
212 
213 /* PCI driver module table */
214 static struct pci_driver intelfb_driver = {
215 	.name =		"intelfb",
216 	.id_table =	intelfb_pci_table,
217 	.probe =	intelfb_pci_register,
218 	.remove =	intelfb_pci_unregister,
219 };
220 
221 /* Module description/parameters */
222 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
223 	      "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
224 MODULE_DESCRIPTION("Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS
225 		   " chipsets");
226 MODULE_LICENSE("Dual BSD/GPL");
227 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
228 
229 static bool accel       = 1;
230 static int vram         = 4;
231 static bool hwcursor    = 0;
232 static bool mtrr        = 1;
233 static bool fixed       = 0;
234 static bool noinit      = 0;
235 static bool noregister  = 0;
236 static bool probeonly   = 0;
237 static bool idonly      = 0;
238 static int bailearly    = 0;
239 static int voffset	= 48;
240 static char *mode       = NULL;
241 
242 module_param(accel, bool, S_IRUGO);
243 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
244 module_param(vram, int, S_IRUGO);
245 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
246 module_param(voffset, int, S_IRUGO);
247 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
248 module_param(hwcursor, bool, S_IRUGO);
249 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
250 module_param(mtrr, bool, S_IRUGO);
251 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
252 module_param(fixed, bool, S_IRUGO);
253 MODULE_PARM_DESC(fixed, "Disable mode switching");
254 module_param(noinit, bool, 0);
255 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
256 module_param(noregister, bool, 0);
257 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
258 module_param(probeonly, bool, 0);
259 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
260 module_param(idonly, bool, 0);
261 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
262 module_param(bailearly, int, 0);
263 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
264 module_param(mode, charp, S_IRUGO);
265 MODULE_PARM_DESC(mode,
266 		 "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
267 
268 #ifndef MODULE
269 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
270 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
271 #define OPT_STRVAL(opt, name) (opt + strlen(name))
272 
273 static __inline__ char * get_opt_string(const char *this_opt, const char *name)
274 {
275 	const char *p;
276 	int i;
277 	char *ret;
278 
279 	p = OPT_STRVAL(this_opt, name);
280 	i = 0;
281 	while (p[i] && p[i] != ' ' && p[i] != ',')
282 		i++;
283 	ret = kmalloc(i + 1, GFP_KERNEL);
284 	if (ret) {
285 		strncpy(ret, p, i);
286 		ret[i] = '\0';
287 	}
288 	return ret;
289 }
290 
291 static __inline__ int get_opt_int(const char *this_opt, const char *name,
292 				  int *ret)
293 {
294 	if (!ret)
295 		return 0;
296 
297 	if (!OPT_EQUAL(this_opt, name))
298 		return 0;
299 
300 	*ret = OPT_INTVAL(this_opt, name);
301 	return 1;
302 }
303 
304 static __inline__ int get_opt_bool(const char *this_opt, const char *name,
305 				   int *ret)
306 {
307 	if (!ret)
308 		return 0;
309 
310 	if (OPT_EQUAL(this_opt, name)) {
311 		if (this_opt[strlen(name)] == '=')
312 			*ret = simple_strtoul(this_opt + strlen(name) + 1,
313 					      NULL, 0);
314 		else
315 			*ret = 1;
316 	} else {
317 		if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
318 			*ret = 0;
319 		else
320 			return 0;
321 	}
322 	return 1;
323 }
324 
325 static int __init intelfb_setup(char *options)
326 {
327 	char *this_opt;
328 
329 	DBG_MSG("intelfb_setup\n");
330 
331 	if (!options || !*options) {
332 		DBG_MSG("no options\n");
333 		return 0;
334 	} else
335 		DBG_MSG("options: %s\n", options);
336 
337 	/*
338 	 * These are the built-in options analogous to the module parameters
339 	 * defined above.
340 	 *
341 	 * The syntax is:
342 	 *
343 	 *    video=intelfb:[mode][,<param>=<val>] ...
344 	 *
345 	 * e.g.,
346 	 *
347 	 *    video=intelfb:1024x768-16@75,accel=0
348 	 */
349 
350 	while ((this_opt = strsep(&options, ","))) {
351 		if (!*this_opt)
352 			continue;
353 		if (get_opt_bool(this_opt, "accel", &accel))
354 			;
355 		else if (get_opt_int(this_opt, "vram", &vram))
356 			;
357 		else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
358 			;
359 		else if (get_opt_bool(this_opt, "mtrr", &mtrr))
360 			;
361 		else if (get_opt_bool(this_opt, "fixed", &fixed))
362 			;
363 		else if (get_opt_bool(this_opt, "init", &noinit))
364 			noinit = !noinit;
365 		else if (OPT_EQUAL(this_opt, "mode="))
366 			mode = get_opt_string(this_opt, "mode=");
367 		else
368 			mode = this_opt;
369 	}
370 
371 	return 0;
372 }
373 
374 #endif
375 
376 static int __init intelfb_init(void)
377 {
378 #ifndef MODULE
379 	char *option = NULL;
380 #endif
381 
382 	DBG_MSG("intelfb_init\n");
383 
384 	INF_MSG("Framebuffer driver for "
385 		"Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
386 	INF_MSG("Version " INTELFB_VERSION "\n");
387 
388 	if (idonly)
389 		return -ENODEV;
390 
391 #ifndef MODULE
392 	if (fb_get_options("intelfb", &option))
393 		return -ENODEV;
394 	intelfb_setup(option);
395 #endif
396 
397 	return pci_register_driver(&intelfb_driver);
398 }
399 
400 static void __exit intelfb_exit(void)
401 {
402 	DBG_MSG("intelfb_exit\n");
403 	pci_unregister_driver(&intelfb_driver);
404 }
405 
406 module_init(intelfb_init);
407 module_exit(intelfb_exit);
408 
409 /***************************************************************
410  *                        driver init / cleanup                *
411  ***************************************************************/
412 
413 static void cleanup(struct intelfb_info *dinfo)
414 {
415 	DBG_MSG("cleanup\n");
416 
417 	if (!dinfo)
418 		return;
419 
420 	intelfbhw_disable_irq(dinfo);
421 
422 	fb_dealloc_cmap(&dinfo->info->cmap);
423 	kfree(dinfo->info->pixmap.addr);
424 
425 	if (dinfo->registered)
426 		unregister_framebuffer(dinfo->info);
427 
428 	arch_phys_wc_del(dinfo->wc_cookie);
429 
430 	if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
431 		agp_unbind_memory(dinfo->gtt_fb_mem);
432 		agp_free_memory(dinfo->gtt_fb_mem);
433 	}
434 	if (dinfo->gtt_cursor_mem) {
435 		agp_unbind_memory(dinfo->gtt_cursor_mem);
436 		agp_free_memory(dinfo->gtt_cursor_mem);
437 	}
438 	if (dinfo->gtt_ring_mem) {
439 		agp_unbind_memory(dinfo->gtt_ring_mem);
440 		agp_free_memory(dinfo->gtt_ring_mem);
441 	}
442 
443 #ifdef CONFIG_FB_INTEL_I2C
444 	/* un-register I2C bus */
445 	intelfb_delete_i2c_busses(dinfo);
446 #endif
447 
448 	if (dinfo->mmio_base)
449 		iounmap((void __iomem *)dinfo->mmio_base);
450 	if (dinfo->aperture.virtual)
451 		iounmap((void __iomem *)dinfo->aperture.virtual);
452 
453 	if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
454 		release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
455 	if (dinfo->flag & INTELFB_FB_ACQUIRED)
456 		release_mem_region(dinfo->aperture.physical,
457 				   dinfo->aperture.size);
458 	framebuffer_release(dinfo->info);
459 }
460 
461 #define bailout(dinfo) do {						\
462 	DBG_MSG("bailout\n");						\
463 	cleanup(dinfo);							\
464 	INF_MSG("Not going to register framebuffer, exiting...\n");	\
465 	return -ENODEV;							\
466 } while (0)
467 
468 
469 static int intelfb_pci_register(struct pci_dev *pdev,
470 				const struct pci_device_id *ent)
471 {
472 	struct fb_info *info;
473 	struct intelfb_info *dinfo;
474 	int i, err, dvo;
475 	int aperture_size, stolen_size;
476 	struct agp_kern_info gtt_info;
477 	int agp_memtype;
478 	const char *s;
479 	struct agp_bridge_data *bridge;
480 	int aperture_bar = 0;
481 	int mmio_bar = 1;
482 	int offset;
483 
484 	DBG_MSG("intelfb_pci_register\n");
485 
486 	num_registered++;
487 	if (num_registered != 1) {
488 		ERR_MSG("Attempted to register %d devices "
489 			"(should be only 1).\n", num_registered);
490 		return -ENODEV;
491 	}
492 
493 	info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
494 	if (!info) {
495 		ERR_MSG("Could not allocate memory for intelfb_info.\n");
496 		return -ENODEV;
497 	}
498 	if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
499 		ERR_MSG("Could not allocate cmap for intelfb_info.\n");
500 		goto err_out_cmap;
501 	}
502 
503 	dinfo = info->par;
504 	dinfo->info  = info;
505 	dinfo->fbops = &intel_fb_ops;
506 	dinfo->pdev  = pdev;
507 
508 	/* Reserve pixmap space. */
509 	info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
510 	if (info->pixmap.addr == NULL) {
511 		ERR_MSG("Cannot reserve pixmap memory.\n");
512 		goto err_out_pixmap;
513 	}
514 
515 	/* set early this option because it could be changed by tv encoder
516 	   driver */
517 	dinfo->fixed_mode = fixed;
518 
519 	/* Enable device. */
520 	if ((err = pci_enable_device(pdev))) {
521 		ERR_MSG("Cannot enable device.\n");
522 		cleanup(dinfo);
523 		return -ENODEV;
524 	}
525 
526 	/* Set base addresses. */
527 	if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
528 	    (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
529 	    (ent->device == PCI_DEVICE_ID_INTEL_945G)  ||
530 	    (ent->device == PCI_DEVICE_ID_INTEL_945GM) ||
531 	    (ent->device == PCI_DEVICE_ID_INTEL_945GME) ||
532 	    (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
533 	    (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
534 
535 		aperture_bar = 2;
536 		mmio_bar = 0;
537 	}
538 	dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
539 	dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
540 	dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
541 	DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
542 		(unsigned long long)pci_resource_start(pdev, aperture_bar),
543 		(unsigned long long)pci_resource_len(pdev, aperture_bar),
544 		(unsigned long long)pci_resource_start(pdev, mmio_bar),
545 		(unsigned long long)pci_resource_len(pdev, mmio_bar));
546 
547 	/* Reserve the fb and MMIO regions */
548 	if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
549 				INTELFB_MODULE_NAME)) {
550 		ERR_MSG("Cannot reserve FB region.\n");
551 		cleanup(dinfo);
552 		return -ENODEV;
553 	}
554 
555 	dinfo->flag |= INTELFB_FB_ACQUIRED;
556 
557 	if (!request_mem_region(dinfo->mmio_base_phys,
558 				INTEL_REG_SIZE,
559 				INTELFB_MODULE_NAME)) {
560 		ERR_MSG("Cannot reserve MMIO region.\n");
561 		cleanup(dinfo);
562 		return -ENODEV;
563 	}
564 
565 	dinfo->flag |= INTELFB_MMIO_ACQUIRED;
566 
567 	/* Get the chipset info. */
568 	dinfo->pci_chipset = pdev->device;
569 
570 	if (intelfbhw_get_chipset(pdev, dinfo)) {
571 		cleanup(dinfo);
572 		return -ENODEV;
573 	}
574 
575 	if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
576 		cleanup(dinfo);
577 		return -ENODEV;
578 	}
579 
580 	INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
581 		"stolen memory %dkB\n",
582 		pdev->bus->number, PCI_SLOT(pdev->devfn),
583 		PCI_FUNC(pdev->devfn), dinfo->name,
584 		BtoMB(aperture_size), BtoKB(stolen_size));
585 
586 	/* Set these from the options. */
587 	dinfo->accel    = accel;
588 	dinfo->hwcursor = hwcursor;
589 
590 	if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
591 		INF_MSG("Acceleration is not supported for the %s chipset.\n",
592 			dinfo->name);
593 		dinfo->accel = 0;
594 	}
595 
596 	/* Framebuffer parameters - Use all the stolen memory if >= vram */
597 	if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
598 		dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
599 		dinfo->fbmem_gart = 0;
600 	} else {
601 		dinfo->fb.size =  MB(vram);
602 		dinfo->fbmem_gart = 1;
603 	}
604 
605 	/* Allocate space for the ring buffer and HW cursor if enabled. */
606 	if (dinfo->accel) {
607 		dinfo->ring.size = RINGBUFFER_SIZE;
608 		dinfo->ring_tail_mask = dinfo->ring.size - 1;
609 	}
610 	if (dinfo->hwcursor)
611 		dinfo->cursor.size = HW_CURSOR_SIZE;
612 
613 	/* Use agpgart to manage the GATT */
614 	if (!(bridge = agp_backend_acquire(pdev))) {
615 		ERR_MSG("cannot acquire agp\n");
616 		cleanup(dinfo);
617 		return -ENODEV;
618 	}
619 
620 	/* get the current gatt info */
621 	if (agp_copy_info(bridge, &gtt_info)) {
622 		ERR_MSG("cannot get agp info\n");
623 		agp_backend_release(bridge);
624 		cleanup(dinfo);
625 		return -ENODEV;
626 	}
627 
628 	if (MB(voffset) < stolen_size)
629 		offset = (stolen_size >> 12);
630 	else
631 		offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
632 
633 	/* set the mem offsets - set them after the already used pages */
634 	if (dinfo->accel)
635 		dinfo->ring.offset = offset + gtt_info.current_memory;
636 	if (dinfo->hwcursor)
637 		dinfo->cursor.offset = offset +
638 			+ gtt_info.current_memory + (dinfo->ring.size >> 12);
639 	if (dinfo->fbmem_gart)
640 		dinfo->fb.offset = offset +
641 			+ gtt_info.current_memory + (dinfo->ring.size >> 12)
642 			+ (dinfo->cursor.size >> 12);
643 
644 	/* Allocate memories (which aren't stolen) */
645 	/* Map the fb and MMIO regions */
646 	/* ioremap only up to the end of used aperture */
647 	dinfo->aperture.virtual = (u8 __iomem *)ioremap_wc
648 		(dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
649 		 + dinfo->fb.size);
650 	if (!dinfo->aperture.virtual) {
651 		ERR_MSG("Cannot remap FB region.\n");
652 		agp_backend_release(bridge);
653 		cleanup(dinfo);
654 		return -ENODEV;
655 	}
656 
657 	dinfo->mmio_base =
658 		(u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
659 					      INTEL_REG_SIZE);
660 	if (!dinfo->mmio_base) {
661 		ERR_MSG("Cannot remap MMIO region.\n");
662 		agp_backend_release(bridge);
663 		cleanup(dinfo);
664 		return -ENODEV;
665 	}
666 
667 	if (dinfo->accel) {
668 		if (!(dinfo->gtt_ring_mem =
669 		      agp_allocate_memory(bridge, dinfo->ring.size >> 12,
670 					  AGP_NORMAL_MEMORY))) {
671 			ERR_MSG("cannot allocate ring buffer memory\n");
672 			agp_backend_release(bridge);
673 			cleanup(dinfo);
674 			return -ENOMEM;
675 		}
676 		if (agp_bind_memory(dinfo->gtt_ring_mem,
677 				    dinfo->ring.offset)) {
678 			ERR_MSG("cannot bind ring buffer memory\n");
679 			agp_backend_release(bridge);
680 			cleanup(dinfo);
681 			return -EBUSY;
682 		}
683 		dinfo->ring.physical = dinfo->aperture.physical
684 			+ (dinfo->ring.offset << 12);
685 		dinfo->ring.virtual  = dinfo->aperture.virtual
686 			+ (dinfo->ring.offset << 12);
687 		dinfo->ring_head = 0;
688 	}
689 	if (dinfo->hwcursor) {
690 		agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
691 			: AGP_NORMAL_MEMORY;
692 		if (!(dinfo->gtt_cursor_mem =
693 		      agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
694 					  agp_memtype))) {
695 			ERR_MSG("cannot allocate cursor memory\n");
696 			agp_backend_release(bridge);
697 			cleanup(dinfo);
698 			return -ENOMEM;
699 		}
700 		if (agp_bind_memory(dinfo->gtt_cursor_mem,
701 				    dinfo->cursor.offset)) {
702 			ERR_MSG("cannot bind cursor memory\n");
703 			agp_backend_release(bridge);
704 			cleanup(dinfo);
705 			return -EBUSY;
706 		}
707 		if (dinfo->mobile)
708 			dinfo->cursor.physical
709 				= dinfo->gtt_cursor_mem->physical;
710 		else
711 			dinfo->cursor.physical = dinfo->aperture.physical
712 				+ (dinfo->cursor.offset << 12);
713 		dinfo->cursor.virtual = dinfo->aperture.virtual
714 			+ (dinfo->cursor.offset << 12);
715 	}
716 	if (dinfo->fbmem_gart) {
717 		if (!(dinfo->gtt_fb_mem =
718 		      agp_allocate_memory(bridge, dinfo->fb.size >> 12,
719 					  AGP_NORMAL_MEMORY))) {
720 			WRN_MSG("cannot allocate framebuffer memory - use "
721 				"the stolen one\n");
722 			dinfo->fbmem_gart = 0;
723 		}
724 		if (agp_bind_memory(dinfo->gtt_fb_mem,
725 				    dinfo->fb.offset)) {
726 			WRN_MSG("cannot bind framebuffer memory - use "
727 				"the stolen one\n");
728 			dinfo->fbmem_gart = 0;
729 		}
730 	}
731 
732 	/* update framebuffer memory parameters */
733 	if (!dinfo->fbmem_gart)
734 		dinfo->fb.offset = 0;   /* starts at offset 0 */
735 	dinfo->fb.physical = dinfo->aperture.physical
736 		+ (dinfo->fb.offset << 12);
737 	dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
738 	dinfo->fb_start = dinfo->fb.offset << 12;
739 
740 	/* release agpgart */
741 	agp_backend_release(bridge);
742 
743 	if (mtrr)
744 		dinfo->wc_cookie = arch_phys_wc_add(dinfo->aperture.physical,
745 						    dinfo->aperture.size);
746 
747 	DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
748 		dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
749 		dinfo->fb.virtual);
750 	DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
751 		dinfo->mmio_base_phys, INTEL_REG_SIZE,
752 		dinfo->mmio_base);
753 	DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
754 		dinfo->ring.physical, dinfo->ring.size,
755 		dinfo->ring.virtual);
756 	DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
757 		dinfo->cursor.physical, dinfo->cursor.size,
758 		dinfo->cursor.virtual, dinfo->cursor.offset,
759 		dinfo->cursor.physical);
760 
761 	DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
762 		"noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
763 	DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
764 
765 	if (probeonly)
766 		bailout(dinfo);
767 
768 	/*
769 	 * Check if the LVDS port or any DVO ports are enabled.  If so,
770 	 * don't allow mode switching
771 	 */
772 	dvo = intelfbhw_check_non_crt(dinfo);
773 	if (dvo) {
774 		dinfo->fixed_mode = 1;
775 		WRN_MSG("Non-CRT device is enabled ( ");
776 		i = 0;
777 		while (dvo) {
778 			if (dvo & 1) {
779 				s = intelfbhw_dvo_to_string(1 << i);
780 				if (s)
781 					printk("%s ", s);
782 			}
783 			dvo >>= 1;
784 			++i;
785 		}
786 		printk(").  Disabling mode switching.\n");
787 	}
788 
789 	if (bailearly == 1)
790 		bailout(dinfo);
791 
792 	if (FIXED_MODE(dinfo) &&
793 	    screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
794 		ERR_MSG("Video mode must be programmed at boot time.\n");
795 		cleanup(dinfo);
796 		return -ENODEV;
797 	}
798 
799 	if (bailearly == 2)
800 		bailout(dinfo);
801 
802 	/* Initialise dinfo and related data. */
803 	/* If an initial mode was programmed at boot time, get its details. */
804 	if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
805 		get_initial_mode(dinfo);
806 
807 	if (bailearly == 3)
808 		bailout(dinfo);
809 
810 	if (FIXED_MODE(dinfo))	/* remap fb address */
811 		update_dinfo(dinfo, &dinfo->initial_var);
812 
813 	if (bailearly == 4)
814 		bailout(dinfo);
815 
816 
817 	if (intelfb_set_fbinfo(dinfo)) {
818 		cleanup(dinfo);
819 		return -ENODEV;
820 	}
821 
822 	if (bailearly == 5)
823 		bailout(dinfo);
824 
825 #ifdef CONFIG_FB_INTEL_I2C
826 	/* register I2C bus */
827 	intelfb_create_i2c_busses(dinfo);
828 #endif
829 
830 	if (bailearly == 6)
831 		bailout(dinfo);
832 
833 	pci_set_drvdata(pdev, dinfo);
834 
835 	/* Save the initial register state. */
836 	i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
837 				    bailearly > 6 ? bailearly - 6 : 0);
838 	if (i != 0) {
839 		DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
840 		bailout(dinfo);
841 	}
842 
843 	intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
844 
845 	if (bailearly == 18)
846 		bailout(dinfo);
847 
848 	/* read active pipe */
849 	dinfo->pipe = intelfbhw_active_pipe(&dinfo->save_state);
850 
851 	/* Cursor initialisation */
852 	if (dinfo->hwcursor) {
853 		intelfbhw_cursor_init(dinfo);
854 		intelfbhw_cursor_reset(dinfo);
855 	}
856 
857 	if (bailearly == 19)
858 		bailout(dinfo);
859 
860 	/* 2d acceleration init */
861 	if (dinfo->accel)
862 		intelfbhw_2d_start(dinfo);
863 
864 	if (bailearly == 20)
865 		bailout(dinfo);
866 
867 	if (noregister)
868 		bailout(dinfo);
869 
870 	if (register_framebuffer(dinfo->info) < 0) {
871 		ERR_MSG("Cannot register framebuffer.\n");
872 		cleanup(dinfo);
873 		return -ENODEV;
874 	}
875 
876 	dinfo->registered = 1;
877 	dinfo->open = 0;
878 
879 	init_waitqueue_head(&dinfo->vsync.wait);
880 	spin_lock_init(&dinfo->int_lock);
881 	dinfo->irq_flags = 0;
882 	dinfo->vsync.pan_display = 0;
883 	dinfo->vsync.pan_offset = 0;
884 
885 	return 0;
886 
887 err_out_pixmap:
888 	fb_dealloc_cmap(&info->cmap);
889 err_out_cmap:
890 	framebuffer_release(info);
891 	return -ENODEV;
892 }
893 
894 static void intelfb_pci_unregister(struct pci_dev *pdev)
895 {
896 	struct intelfb_info *dinfo = pci_get_drvdata(pdev);
897 
898 	DBG_MSG("intelfb_pci_unregister\n");
899 
900 	if (!dinfo)
901 		return;
902 
903 	cleanup(dinfo);
904 }
905 
906 /***************************************************************
907  *                       helper functions                      *
908  ***************************************************************/
909 
910 int __inline__ intelfb_var_to_depth(const struct fb_var_screeninfo *var)
911 {
912 	DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
913 		var->bits_per_pixel, var->green.length);
914 
915 	switch (var->bits_per_pixel) {
916 	case 16:
917 		return (var->green.length == 6) ? 16 : 15;
918 	case 32:
919 		return 24;
920 	default:
921 		return var->bits_per_pixel;
922 	}
923 }
924 
925 
926 static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
927 {
928 	int xtot = var->xres + var->left_margin + var->right_margin +
929 		   var->hsync_len;
930 	int ytot = var->yres + var->upper_margin + var->lower_margin +
931 		   var->vsync_len;
932 
933 	return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
934 }
935 
936 /***************************************************************
937  *                Various intialisation functions              *
938  ***************************************************************/
939 
940 static void get_initial_mode(struct intelfb_info *dinfo)
941 {
942 	struct fb_var_screeninfo *var;
943 	int xtot, ytot;
944 
945 	DBG_MSG("get_initial_mode\n");
946 
947 	dinfo->initial_vga = 1;
948 	dinfo->initial_fb_base = screen_info.lfb_base;
949 	dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
950 	dinfo->initial_pitch = screen_info.lfb_linelength;
951 
952 	var = &dinfo->initial_var;
953 	memset(var, 0, sizeof(*var));
954 	var->xres = screen_info.lfb_width;
955 	var->yres = screen_info.lfb_height;
956 	var->bits_per_pixel = screen_info.lfb_depth;
957 	switch (screen_info.lfb_depth) {
958 	case 15:
959 		var->bits_per_pixel = 16;
960 		break;
961 	case 24:
962 		var->bits_per_pixel = 32;
963 		break;
964 	}
965 
966 	DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
967 		dinfo->initial_fb_base, dinfo->initial_video_ram,
968 		BtoKB(dinfo->initial_video_ram));
969 
970 	DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
971 		var->xres, var->yres, var->bits_per_pixel,
972 		dinfo->initial_pitch);
973 
974 	/* Dummy timing values (assume 60Hz) */
975 	var->left_margin = (var->xres / 8) & 0xf8;
976 	var->right_margin = 32;
977 	var->upper_margin = 16;
978 	var->lower_margin = 4;
979 	var->hsync_len = (var->xres / 8) & 0xf8;
980 	var->vsync_len = 4;
981 
982 	xtot = var->xres + var->left_margin +
983 		var->right_margin + var->hsync_len;
984 	ytot = var->yres + var->upper_margin +
985 		var->lower_margin + var->vsync_len;
986 	var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
987 
988 	var->height = -1;
989 	var->width = -1;
990 
991 	if (var->bits_per_pixel > 8) {
992 		var->red.offset = screen_info.red_pos;
993 		var->red.length = screen_info.red_size;
994 		var->green.offset = screen_info.green_pos;
995 		var->green.length = screen_info.green_size;
996 		var->blue.offset = screen_info.blue_pos;
997 		var->blue.length = screen_info.blue_size;
998 		var->transp.offset = screen_info.rsvd_pos;
999 		var->transp.length = screen_info.rsvd_size;
1000 	} else {
1001 		var->red.length = 8;
1002 		var->green.length = 8;
1003 		var->blue.length = 8;
1004 	}
1005 }
1006 
1007 static int intelfb_init_var(struct intelfb_info *dinfo)
1008 {
1009 	struct fb_var_screeninfo *var;
1010 	int msrc = 0;
1011 
1012 	DBG_MSG("intelfb_init_var\n");
1013 
1014 	var = &dinfo->info->var;
1015 	if (FIXED_MODE(dinfo)) {
1016 	        memcpy(var, &dinfo->initial_var,
1017 		       sizeof(struct fb_var_screeninfo));
1018 		msrc = 5;
1019 	} else {
1020 		const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1021 		u8 *edid_d = NULL;
1022 
1023 		if (edid_s) {
1024 			edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1025 
1026 			if (edid_d) {
1027 				fb_edid_to_monspecs(edid_d,
1028 						    &dinfo->info->monspecs);
1029 				kfree(edid_d);
1030 			}
1031 		}
1032 
1033 		if (mode) {
1034 			printk("intelfb: Looking for mode in private "
1035 			       "database\n");
1036 			msrc = fb_find_mode(var, dinfo->info, mode,
1037 					    dinfo->info->monspecs.modedb,
1038 					    dinfo->info->monspecs.modedb_len,
1039 					    NULL, 0);
1040 
1041 			if (msrc && msrc > 1) {
1042 				printk("intelfb: No mode in private database, "
1043 				       "intelfb: looking for mode in global "
1044 				       "database ");
1045 				msrc = fb_find_mode(var, dinfo->info, mode,
1046 						    NULL, 0, NULL, 0);
1047 
1048 				if (msrc)
1049 					msrc |= 8;
1050 			}
1051 
1052 		}
1053 
1054 		if (!msrc)
1055 			msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1056 					    NULL, 0, NULL, 0);
1057 	}
1058 
1059 	if (!msrc) {
1060 		ERR_MSG("Cannot find a suitable video mode.\n");
1061 		return 1;
1062 	}
1063 
1064 	INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1065 		var->bits_per_pixel, var_to_refresh(var));
1066 
1067 	DBG_MSG("Initial video mode is from %d.\n", msrc);
1068 
1069 #if ALLOCATE_FOR_PANNING
1070 	/* Allow use of half of the video ram for panning */
1071 	var->xres_virtual = var->xres;
1072 	var->yres_virtual =
1073 		dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1074 	if (var->yres_virtual < var->yres)
1075 		var->yres_virtual = var->yres;
1076 #else
1077 	var->yres_virtual = var->yres;
1078 #endif
1079 
1080 	if (dinfo->accel)
1081 		var->accel_flags |= FB_ACCELF_TEXT;
1082 	else
1083 		var->accel_flags &= ~FB_ACCELF_TEXT;
1084 
1085 	return 0;
1086 }
1087 
1088 static int intelfb_set_fbinfo(struct intelfb_info *dinfo)
1089 {
1090 	struct fb_info *info = dinfo->info;
1091 
1092 	DBG_MSG("intelfb_set_fbinfo\n");
1093 
1094 	info->flags = FBINFO_FLAG_DEFAULT;
1095 	info->fbops = &intel_fb_ops;
1096 	info->pseudo_palette = dinfo->pseudo_palette;
1097 
1098 	info->pixmap.size = 64*1024;
1099 	info->pixmap.buf_align = 8;
1100 	info->pixmap.access_align = 32;
1101 	info->pixmap.flags = FB_PIXMAP_SYSTEM;
1102 
1103 	if (intelfb_init_var(dinfo))
1104 		return 1;
1105 
1106 	info->pixmap.scan_align = 1;
1107 	strcpy(info->fix.id, dinfo->name);
1108 	info->fix.smem_start = dinfo->fb.physical;
1109 	info->fix.smem_len = dinfo->fb.size;
1110 	info->fix.type = FB_TYPE_PACKED_PIXELS;
1111 	info->fix.type_aux = 0;
1112 	info->fix.xpanstep = 8;
1113 	info->fix.ypanstep = 1;
1114 	info->fix.ywrapstep = 0;
1115 	info->fix.mmio_start = dinfo->mmio_base_phys;
1116 	info->fix.mmio_len = INTEL_REG_SIZE;
1117 	info->fix.accel = FB_ACCEL_I830;
1118 	update_dinfo(dinfo, &info->var);
1119 
1120 	return 0;
1121 }
1122 
1123 /* Update dinfo to match the active video mode. */
1124 static void update_dinfo(struct intelfb_info *dinfo,
1125 			 struct fb_var_screeninfo *var)
1126 {
1127 	DBG_MSG("update_dinfo\n");
1128 
1129 	dinfo->bpp = var->bits_per_pixel;
1130 	dinfo->depth = intelfb_var_to_depth(var);
1131 	dinfo->xres = var->xres;
1132 	dinfo->yres = var->xres;
1133 	dinfo->pixclock = var->pixclock;
1134 
1135 	dinfo->info->fix.visual = dinfo->visual;
1136 	dinfo->info->fix.line_length = dinfo->pitch;
1137 
1138 	switch (dinfo->bpp) {
1139 	case 8:
1140 		dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1141 		dinfo->pitch = var->xres_virtual;
1142 		break;
1143 	case 16:
1144 		dinfo->visual = FB_VISUAL_TRUECOLOR;
1145 		dinfo->pitch = var->xres_virtual * 2;
1146 		break;
1147 	case 32:
1148 		dinfo->visual = FB_VISUAL_TRUECOLOR;
1149 		dinfo->pitch = var->xres_virtual * 4;
1150 		break;
1151 	}
1152 
1153 	/* Make sure the line length is a aligned correctly. */
1154 	if (IS_I9XX(dinfo))
1155 		dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1156 	else
1157 		dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1158 
1159 	if (FIXED_MODE(dinfo))
1160 		dinfo->pitch = dinfo->initial_pitch;
1161 
1162 	dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1163 	dinfo->info->fix.line_length = dinfo->pitch;
1164 	dinfo->info->fix.visual = dinfo->visual;
1165 }
1166 
1167 /* fbops functions */
1168 
1169 /***************************************************************
1170  *                       fbdev interface                       *
1171  ***************************************************************/
1172 
1173 static int intelfb_open(struct fb_info *info, int user)
1174 {
1175 	struct intelfb_info *dinfo = GET_DINFO(info);
1176 
1177 	if (user)
1178 		dinfo->open++;
1179 
1180 	return 0;
1181 }
1182 
1183 static int intelfb_release(struct fb_info *info, int user)
1184 {
1185 	struct intelfb_info *dinfo = GET_DINFO(info);
1186 
1187 	if (user) {
1188 		dinfo->open--;
1189 		msleep(1);
1190 		if (!dinfo->open)
1191 			intelfbhw_disable_irq(dinfo);
1192 	}
1193 
1194 	return 0;
1195 }
1196 
1197 static int intelfb_check_var(struct fb_var_screeninfo *var,
1198 			     struct fb_info *info)
1199 {
1200 	int change_var = 0;
1201 	struct fb_var_screeninfo v;
1202 	struct intelfb_info *dinfo;
1203 	static int first = 1;
1204 	int i;
1205 	/* Good pitches to allow tiling.  Don't care about pitches < 1024. */
1206 	static const int pitches[] = {
1207 		128 * 8,
1208 		128 * 16,
1209 		128 * 32,
1210 		128 * 64,
1211 		0
1212 	};
1213 
1214 	DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1215 
1216 	dinfo = GET_DINFO(info);
1217 
1218 	/* update the pitch */
1219 	if (intelfbhw_validate_mode(dinfo, var) != 0)
1220 		return -EINVAL;
1221 
1222 	v = *var;
1223 
1224 	for (i = 0; pitches[i] != 0; i++) {
1225 		if (pitches[i] >= v.xres_virtual) {
1226 			v.xres_virtual = pitches[i];
1227 			break;
1228 		}
1229 	}
1230 
1231 	/* Check for a supported bpp. */
1232 	if (v.bits_per_pixel <= 8)
1233 		v.bits_per_pixel = 8;
1234 	else if (v.bits_per_pixel <= 16) {
1235 		if (v.bits_per_pixel == 16)
1236 			v.green.length = 6;
1237 		v.bits_per_pixel = 16;
1238 	} else if (v.bits_per_pixel <= 32)
1239 		v.bits_per_pixel = 32;
1240 	else
1241 		return -EINVAL;
1242 
1243 	change_var = ((info->var.xres != var->xres) ||
1244 		      (info->var.yres != var->yres) ||
1245 		      (info->var.xres_virtual != var->xres_virtual) ||
1246 		      (info->var.yres_virtual != var->yres_virtual) ||
1247 		      (info->var.bits_per_pixel != var->bits_per_pixel) ||
1248 		      memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1249 		      memcmp(&info->var.green, &var->green,
1250 			     sizeof(var->green)) ||
1251 		      memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1252 
1253 	if (FIXED_MODE(dinfo) &&
1254 	    (change_var ||
1255 	     var->yres_virtual > dinfo->initial_var.yres_virtual ||
1256 	     var->yres_virtual < dinfo->initial_var.yres ||
1257 	     var->xoffset || var->nonstd)) {
1258 		if (first) {
1259 			ERR_MSG("Changing the video mode is not supported.\n");
1260 			first = 0;
1261 		}
1262 		return -EINVAL;
1263 	}
1264 
1265 	switch (intelfb_var_to_depth(&v)) {
1266 	case 8:
1267 		v.red.offset = v.green.offset = v.blue.offset = 0;
1268 		v.red.length = v.green.length = v.blue.length = 8;
1269 		v.transp.offset = v.transp.length = 0;
1270 		break;
1271 	case 15:
1272 		v.red.offset = 10;
1273 		v.green.offset = 5;
1274 		v.blue.offset = 0;
1275 		v.red.length = v.green.length = v.blue.length = 5;
1276 		v.transp.offset = v.transp.length = 0;
1277 		break;
1278 	case 16:
1279 		v.red.offset = 11;
1280 		v.green.offset = 5;
1281 		v.blue.offset = 0;
1282 		v.red.length = 5;
1283 		v.green.length = 6;
1284 		v.blue.length = 5;
1285 		v.transp.offset = v.transp.length = 0;
1286 		break;
1287 	case 24:
1288 		v.red.offset = 16;
1289 		v.green.offset = 8;
1290 		v.blue.offset = 0;
1291 		v.red.length = v.green.length = v.blue.length = 8;
1292 		v.transp.offset = v.transp.length = 0;
1293 		break;
1294 	case 32:
1295 		v.red.offset = 16;
1296 		v.green.offset = 8;
1297 		v.blue.offset = 0;
1298 		v.red.length = v.green.length = v.blue.length = 8;
1299 		v.transp.offset = 24;
1300 		v.transp.length = 8;
1301 		break;
1302 	}
1303 
1304 	if (v.xoffset < 0)
1305 		v.xoffset = 0;
1306 	if (v.yoffset < 0)
1307 		v.yoffset = 0;
1308 
1309 	if (v.xoffset > v.xres_virtual - v.xres)
1310 		v.xoffset = v.xres_virtual - v.xres;
1311 	if (v.yoffset > v.yres_virtual - v.yres)
1312 		v.yoffset = v.yres_virtual - v.yres;
1313 
1314 	v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1315 			  v.transp.msb_right = 0;
1316 
1317         *var = v;
1318 
1319 	return 0;
1320 }
1321 
1322 static int intelfb_set_par(struct fb_info *info)
1323 {
1324 	struct intelfb_hwstate *hw;
1325         struct intelfb_info *dinfo = GET_DINFO(info);
1326 
1327 	if (FIXED_MODE(dinfo)) {
1328 		ERR_MSG("Changing the video mode is not supported.\n");
1329 		return -EINVAL;
1330 	}
1331 
1332 	hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1333 	if (!hw)
1334 		return -ENOMEM;
1335 
1336 	DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1337 		info->var.yres, info->var.bits_per_pixel);
1338 
1339 	/*
1340 	 * Disable VCO prior to timing register change.
1341 	 */
1342 	OUTREG(DPLL_A, INREG(DPLL_A) & ~DPLL_VCO_ENABLE);
1343 
1344 	intelfb_blank(FB_BLANK_POWERDOWN, info);
1345 
1346 	if (ACCEL(dinfo, info))
1347 		intelfbhw_2d_stop(dinfo);
1348 
1349 	memcpy(hw, &dinfo->save_state, sizeof(*hw));
1350 	if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1351 		goto invalid_mode;
1352 	if (intelfbhw_program_mode(dinfo, hw, 0))
1353 		goto invalid_mode;
1354 
1355 #if REGDUMP > 0
1356 	intelfbhw_read_hw_state(dinfo, hw, 0);
1357 	intelfbhw_print_hw_state(dinfo, hw);
1358 #endif
1359 
1360 	update_dinfo(dinfo, &info->var);
1361 
1362 	if (ACCEL(dinfo, info))
1363 		intelfbhw_2d_start(dinfo);
1364 
1365 	intelfb_pan_display(&info->var, info);
1366 
1367 	intelfb_blank(FB_BLANK_UNBLANK, info);
1368 
1369 	if (ACCEL(dinfo, info)) {
1370 		info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1371 		FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1372 		FBINFO_HWACCEL_IMAGEBLIT;
1373 	} else
1374 		info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1375 
1376 	kfree(hw);
1377 	return 0;
1378 invalid_mode:
1379 	kfree(hw);
1380 	return -EINVAL;
1381 }
1382 
1383 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1384 			     unsigned blue, unsigned transp,
1385 			     struct fb_info *info)
1386 {
1387 	struct intelfb_info *dinfo = GET_DINFO(info);
1388 
1389 #if VERBOSE > 0
1390 	DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1391 #endif
1392 
1393 	if (regno > 255)
1394 		return 1;
1395 
1396 	if (dinfo->depth == 8) {
1397 		red >>= 8;
1398 		green >>= 8;
1399 		blue >>= 8;
1400 
1401 		intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1402 				    transp);
1403 	}
1404 
1405 	if (regno < 16) {
1406 		switch (dinfo->depth) {
1407 		case 15:
1408 			dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
1409 				((green & 0xf800) >>  6) |
1410 				((blue & 0xf800) >> 11);
1411 			break;
1412 		case 16:
1413 			dinfo->pseudo_palette[regno] = (red & 0xf800) |
1414 				((green & 0xfc00) >>  5) |
1415 				((blue  & 0xf800) >> 11);
1416 			break;
1417 		case 24:
1418 			dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1419 				(green & 0xff00) |
1420 				((blue  & 0xff00) >> 8);
1421 			break;
1422 		}
1423 	}
1424 
1425 	return 0;
1426 }
1427 
1428 static int intelfb_blank(int blank, struct fb_info *info)
1429 {
1430 	intelfbhw_do_blank(blank, info);
1431 	return 0;
1432 }
1433 
1434 static int intelfb_pan_display(struct fb_var_screeninfo *var,
1435 			       struct fb_info *info)
1436 {
1437 	intelfbhw_pan_display(var, info);
1438 	return 0;
1439 }
1440 
1441 /* When/if we have our own ioctls. */
1442 static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1443 			 unsigned long arg)
1444 {
1445 	int retval = 0;
1446 	struct intelfb_info *dinfo = GET_DINFO(info);
1447 	u32 pipe = 0;
1448 
1449 	switch (cmd) {
1450 		case FBIO_WAITFORVSYNC:
1451 			if (get_user(pipe, (__u32 __user *)arg))
1452 				return -EFAULT;
1453 
1454 			retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1455 			break;
1456 		default:
1457 			break;
1458 	}
1459 
1460 	return retval;
1461 }
1462 
1463 static void intelfb_fillrect (struct fb_info *info,
1464 			      const struct fb_fillrect *rect)
1465 {
1466         struct intelfb_info *dinfo = GET_DINFO(info);
1467 	u32 rop, color;
1468 
1469 #if VERBOSE > 0
1470 	DBG_MSG("intelfb_fillrect\n");
1471 #endif
1472 
1473 	if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1474 		cfb_fillrect(info, rect);
1475 		return;
1476 	}
1477 
1478 	if (rect->rop == ROP_COPY)
1479 		rop = PAT_ROP_GXCOPY;
1480 	else /* ROP_XOR */
1481 		rop = PAT_ROP_GXXOR;
1482 
1483 	if (dinfo->depth != 8)
1484 		color = dinfo->pseudo_palette[rect->color];
1485 	else
1486 		color = rect->color;
1487 
1488 	intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1489 			      rect->width, rect->height, color,
1490 			      dinfo->pitch, info->var.bits_per_pixel,
1491 			      rop);
1492 }
1493 
1494 static void intelfb_copyarea(struct fb_info *info,
1495 			     const struct fb_copyarea *region)
1496 {
1497         struct intelfb_info *dinfo = GET_DINFO(info);
1498 
1499 #if VERBOSE > 0
1500 	DBG_MSG("intelfb_copyarea\n");
1501 #endif
1502 
1503 	if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1504 		cfb_copyarea(info, region);
1505 		return;
1506 	}
1507 
1508 	intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1509 			    region->dy, region->width, region->height,
1510 			    dinfo->pitch, info->var.bits_per_pixel);
1511 }
1512 
1513 static void intelfb_imageblit(struct fb_info *info,
1514 			      const struct fb_image *image)
1515 {
1516         struct intelfb_info *dinfo = GET_DINFO(info);
1517 	u32 fgcolor, bgcolor;
1518 
1519 #if VERBOSE > 0
1520 	DBG_MSG("intelfb_imageblit\n");
1521 #endif
1522 
1523 	if (!ACCEL(dinfo, info) || dinfo->depth == 4
1524 	    || image->depth != 1) {
1525 		cfb_imageblit(info, image);
1526 		return;
1527 	}
1528 
1529 	if (dinfo->depth != 8) {
1530 		fgcolor = dinfo->pseudo_palette[image->fg_color];
1531 		bgcolor = dinfo->pseudo_palette[image->bg_color];
1532 	} else {
1533 		fgcolor = image->fg_color;
1534 		bgcolor = image->bg_color;
1535 	}
1536 
1537 	if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1538 				    image->height, image->data,
1539 				    image->dx, image->dy,
1540 				    dinfo->pitch, info->var.bits_per_pixel)) {
1541 		cfb_imageblit(info, image);
1542 		return;
1543 	}
1544 }
1545 
1546 static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1547 {
1548         struct intelfb_info *dinfo = GET_DINFO(info);
1549 	u32 physical;
1550 #if VERBOSE > 0
1551 	DBG_MSG("intelfb_cursor\n");
1552 #endif
1553 
1554 	if (!dinfo->hwcursor)
1555 		return -ENODEV;
1556 
1557 	intelfbhw_cursor_hide(dinfo);
1558 
1559 	/* If XFree killed the cursor - restore it */
1560 	physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1561 		   (dinfo->cursor.offset << 12);
1562 
1563 	if (INREG(CURSOR_A_BASEADDR) != physical) {
1564 		u32 fg, bg;
1565 
1566 		DBG_MSG("the cursor was killed - restore it !!\n");
1567 		DBG_MSG("size %d, %d   pos %d, %d\n",
1568 			cursor->image.width, cursor->image.height,
1569 			cursor->image.dx, cursor->image.dy);
1570 
1571 		intelfbhw_cursor_init(dinfo);
1572 		intelfbhw_cursor_reset(dinfo);
1573 		intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1574 					cursor->image.dy);
1575 
1576 		if (dinfo->depth != 8) {
1577 			fg =dinfo->pseudo_palette[cursor->image.fg_color];
1578 			bg =dinfo->pseudo_palette[cursor->image.bg_color];
1579 		} else {
1580 			fg = cursor->image.fg_color;
1581 			bg = cursor->image.bg_color;
1582 		}
1583 		intelfbhw_cursor_setcolor(dinfo, bg, fg);
1584 		intelfbhw_cursor_load(dinfo, cursor->image.width,
1585 				      cursor->image.height,
1586 				      dinfo->cursor_src);
1587 
1588 		if (cursor->enable)
1589 			intelfbhw_cursor_show(dinfo);
1590 		return 0;
1591 	}
1592 
1593 	if (cursor->set & FB_CUR_SETPOS) {
1594 		u32 dx, dy;
1595 
1596 		dx = cursor->image.dx - info->var.xoffset;
1597 		dy = cursor->image.dy - info->var.yoffset;
1598 
1599 		intelfbhw_cursor_setpos(dinfo, dx, dy);
1600 	}
1601 
1602 	if (cursor->set & FB_CUR_SETSIZE) {
1603 		if (cursor->image.width > 64 || cursor->image.height > 64)
1604 			return -ENXIO;
1605 
1606 		intelfbhw_cursor_reset(dinfo);
1607 	}
1608 
1609 	if (cursor->set & FB_CUR_SETCMAP) {
1610 		u32 fg, bg;
1611 
1612 		if (dinfo->depth != 8) {
1613 			fg = dinfo->pseudo_palette[cursor->image.fg_color];
1614 			bg = dinfo->pseudo_palette[cursor->image.bg_color];
1615 		} else {
1616 			fg = cursor->image.fg_color;
1617 			bg = cursor->image.bg_color;
1618 		}
1619 
1620 		intelfbhw_cursor_setcolor(dinfo, bg, fg);
1621 	}
1622 
1623 	if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1624 		u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1625 		u32 size = s_pitch * cursor->image.height;
1626 		u8 *dat = (u8 *) cursor->image.data;
1627 		u8 *msk = (u8 *) cursor->mask;
1628 		u8 src[64];
1629 		u32 i;
1630 
1631 		if (cursor->image.depth != 1)
1632 			return -ENXIO;
1633 
1634 		switch (cursor->rop) {
1635 		case ROP_XOR:
1636 			for (i = 0; i < size; i++)
1637 				src[i] = dat[i] ^ msk[i];
1638 			break;
1639 		case ROP_COPY:
1640 		default:
1641 			for (i = 0; i < size; i++)
1642 				src[i] = dat[i] & msk[i];
1643 			break;
1644 		}
1645 
1646 		/* save the bitmap to restore it when XFree will
1647 		   make the cursor dirty */
1648 		memcpy(dinfo->cursor_src, src, size);
1649 
1650 		intelfbhw_cursor_load(dinfo, cursor->image.width,
1651 				      cursor->image.height, src);
1652 	}
1653 
1654 	if (cursor->enable)
1655 		intelfbhw_cursor_show(dinfo);
1656 
1657 	return 0;
1658 }
1659 
1660 static int intelfb_sync(struct fb_info *info)
1661 {
1662         struct intelfb_info *dinfo = GET_DINFO(info);
1663 
1664 #if VERBOSE > 0
1665 	DBG_MSG("intelfb_sync\n");
1666 #endif
1667 
1668 	if (dinfo->ring_lockup)
1669 		return 0;
1670 
1671 	intelfbhw_do_sync(dinfo);
1672 	return 0;
1673 }
1674 
1675