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libertas: fixes for slow hardware
[linux-2.6/openmoko-kernel/knife-kernel.git] / drivers / video / intelfb / intelfbdrv.c
blob481d58f7535d0cc4cb5e09ba258a3a486f3cef33
1 /*
2 * intelfb
3 *
4 * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM/
5 * 945G/945GM 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
104 #include <linux/module.h>
105 #include <linux/kernel.h>
106 #include <linux/errno.h>
107 #include <linux/string.h>
108 #include <linux/mm.h>
109 #include <linux/slab.h>
110 #include <linux/delay.h>
111 #include <linux/fb.h>
112 #include <linux/ioport.h>
113 #include <linux/init.h>
114 #include <linux/pci.h>
115 #include <linux/vmalloc.h>
116 #include <linux/pagemap.h>
117 #include <linux/screen_info.h>
118
119 #include <asm/io.h>
120
121 #ifdef CONFIG_MTRR
122 #include <asm/mtrr.h>
123 #endif
124
125 #include "intelfb.h"
126 #include "intelfbhw.h"
127 #include "../edid.h"
128
129 static void __devinit get_initial_mode(struct intelfb_info *dinfo);
130 static void update_dinfo(struct intelfb_info *dinfo,
131 struct fb_var_screeninfo *var);
132 static int intelfb_open(struct fb_info *info, int user);
133 static int intelfb_release(struct fb_info *info, int user);
134 static int intelfb_check_var(struct fb_var_screeninfo *var,
135 struct fb_info *info);
136 static int intelfb_set_par(struct fb_info *info);
137 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
138 unsigned blue, unsigned transp,
139 struct fb_info *info);
140
141 static int intelfb_blank(int blank, struct fb_info *info);
142 static int intelfb_pan_display(struct fb_var_screeninfo *var,
143 struct fb_info *info);
144
145 static void intelfb_fillrect(struct fb_info *info,
146 const struct fb_fillrect *rect);
147 static void intelfb_copyarea(struct fb_info *info,
148 const struct fb_copyarea *region);
149 static void intelfb_imageblit(struct fb_info *info,
150 const struct fb_image *image);
151 static int intelfb_cursor(struct fb_info *info,
152 struct fb_cursor *cursor);
153
154 static int intelfb_sync(struct fb_info *info);
155
156 static int intelfb_ioctl(struct fb_info *info,
157 unsigned int cmd, unsigned long arg);
158
159 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
160 const struct pci_device_id *ent);
161 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
162 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
163
164 /*
165 * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
166 * mobile chipsets from being registered.
167 */
168 #if DETECT_VGA_CLASS_ONLY
169 #define INTELFB_CLASS_MASK ~0 << 8
170 #else
171 #define INTELFB_CLASS_MASK 0
172 #endif
173
174 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
175 { 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 },
176 { 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 },
177 { 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 },
178 { 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 },
179 { 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 },
180 { 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 },
181 { 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 },
182 { 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 },
183 { 0, }
184 };
185
186 /* Global data */
187 static int num_registered = 0;
188
189 /* fb ops */
190 static struct fb_ops intel_fb_ops = {
191 .owner = THIS_MODULE,
192 .fb_open = intelfb_open,
193 .fb_release = intelfb_release,
194 .fb_check_var = intelfb_check_var,
195 .fb_set_par = intelfb_set_par,
196 .fb_setcolreg = intelfb_setcolreg,
197 .fb_blank = intelfb_blank,
198 .fb_pan_display = intelfb_pan_display,
199 .fb_fillrect = intelfb_fillrect,
200 .fb_copyarea = intelfb_copyarea,
201 .fb_imageblit = intelfb_imageblit,
202 .fb_cursor = intelfb_cursor,
203 .fb_sync = intelfb_sync,
204 .fb_ioctl = intelfb_ioctl
205 };
206
207 /* PCI driver module table */
208 static struct pci_driver intelfb_driver = {
209 .name = "intelfb",
210 .id_table = intelfb_pci_table,
211 .probe = intelfb_pci_register,
212 .remove = __devexit_p(intelfb_pci_unregister)
213 };
214
215 /* Module description/parameters */
216 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
217 "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
218 MODULE_DESCRIPTION("Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS
219 " chipsets");
220 MODULE_LICENSE("Dual BSD/GPL");
221 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
222
223 static int accel = 1;
224 static int vram = 4;
225 static int hwcursor = 0;
226 static int mtrr = 1;
227 static int fixed = 0;
228 static int noinit = 0;
229 static int noregister = 0;
230 static int probeonly = 0;
231 static int idonly = 0;
232 static int bailearly = 0;
233 static int voffset = 48;
234 static char *mode = NULL;
235
236 module_param(accel, bool, S_IRUGO);
237 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
238 module_param(vram, int, S_IRUGO);
239 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
240 module_param(voffset, int, S_IRUGO);
241 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
242 module_param(hwcursor, bool, S_IRUGO);
243 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
244 module_param(mtrr, bool, S_IRUGO);
245 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
246 module_param(fixed, bool, S_IRUGO);
247 MODULE_PARM_DESC(fixed, "Disable mode switching");
248 module_param(noinit, bool, 0);
249 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
250 module_param(noregister, bool, 0);
251 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
252 module_param(probeonly, bool, 0);
253 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
254 module_param(idonly, bool, 0);
255 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
256 module_param(bailearly, bool, 0);
257 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
258 module_param(mode, charp, S_IRUGO);
259 MODULE_PARM_DESC(mode,
260 "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
261
262 #ifndef MODULE
263 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
264 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
265 #define OPT_STRVAL(opt, name) (opt + strlen(name))
266
267 static __inline__ char * get_opt_string(const char *this_opt, const char *name)
268 {
269 const char *p;
270 int i;
271 char *ret;
272
273 p = OPT_STRVAL(this_opt, name);
274 i = 0;
275 while (p[i] && p[i] != ' ' && p[i] != ',')
276 i++;
277 ret = kmalloc(i + 1, GFP_KERNEL);
278 if (ret) {
279 strncpy(ret, p, i);
280 ret[i] = '\0';
281 }
282 return ret;
283 }
284
285 static __inline__ int get_opt_int(const char *this_opt, const char *name,
286 int *ret)
287 {
288 if (!ret)
289 return 0;
290
291 if (!OPT_EQUAL(this_opt, name))
292 return 0;
293
294 *ret = OPT_INTVAL(this_opt, name);
295 return 1;
296 }
297
298 static __inline__ int get_opt_bool(const char *this_opt, const char *name,
299 int *ret)
300 {
301 if (!ret)
302 return 0;
303
304 if (OPT_EQUAL(this_opt, name)) {
305 if (this_opt[strlen(name)] == '=')
306 *ret = simple_strtoul(this_opt + strlen(name) + 1,
307 NULL, 0);
308 else
309 *ret = 1;
310 } else {
311 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
312 *ret = 0;
313 else
314 return 0;
315 }
316 return 1;
317 }
318
319 static int __init intelfb_setup(char *options)
320 {
321 char *this_opt;
322
323 DBG_MSG("intelfb_setup\n");
324
325 if (!options || !*options) {
326 DBG_MSG("no options\n");
327 return 0;
328 } else
329 DBG_MSG("options: %s\n", options);
330
331 /*
332 * These are the built-in options analogous to the module parameters
333 * defined above.
334 *
335 * The syntax is:
336 *
337 * video=intelfb:[mode][,<param>=<val>] ...
338 *
339 * e.g.,
340 *
341 * video=intelfb:1024x768-16@75,accel=0
342 */
343
344 while ((this_opt = strsep(&options, ","))) {
345 if (!*this_opt)
346 continue;
347 if (get_opt_bool(this_opt, "accel", &accel))
348 ;
349 else if (get_opt_int(this_opt, "vram", &vram))
350 ;
351 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
352 ;
353 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
354 ;
355 else if (get_opt_bool(this_opt, "fixed", &fixed))
356 ;
357 else if (get_opt_bool(this_opt, "init", &noinit))
358 noinit = !noinit;
359 else if (OPT_EQUAL(this_opt, "mode="))
360 mode = get_opt_string(this_opt, "mode=");
361 else
362 mode = this_opt;
363 }
364
365 return 0;
366 }
367
368 #endif
369
370 static int __init intelfb_init(void)
371 {
372 #ifndef MODULE
373 char *option = NULL;
374 #endif
375
376 DBG_MSG("intelfb_init\n");
377
378 INF_MSG("Framebuffer driver for "
379 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
380 INF_MSG("Version " INTELFB_VERSION "\n");
381
382 if (idonly)
383 return -ENODEV;
384
385 #ifndef MODULE
386 if (fb_get_options("intelfb", &option))
387 return -ENODEV;
388 intelfb_setup(option);
389 #endif
390
391 return pci_register_driver(&intelfb_driver);
392 }
393
394 static void __exit intelfb_exit(void)
395 {
396 DBG_MSG("intelfb_exit\n");
397 pci_unregister_driver(&intelfb_driver);
398 }
399
400 module_init(intelfb_init);
401 module_exit(intelfb_exit);
402
403 /***************************************************************
404 * mtrr support functions *
405 ***************************************************************/
406
407 #ifdef CONFIG_MTRR
408 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
409 {
410 dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
411 dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
412 if (dinfo->mtrr_reg < 0) {
413 ERR_MSG("unable to set MTRR\n");
414 return;
415 }
416 dinfo->has_mtrr = 1;
417 }
418 static inline void unset_mtrr(struct intelfb_info *dinfo)
419 {
420 if (dinfo->has_mtrr)
421 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
422 dinfo->aperture.size);
423 }
424 #else
425 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
426
427 #define unset_mtrr(x) do { } while (0)
428 #endif /* CONFIG_MTRR */
429
430 /***************************************************************
431 * driver init / cleanup *
432 ***************************************************************/
433
434 static void cleanup(struct intelfb_info *dinfo)
435 {
436 DBG_MSG("cleanup\n");
437
438 if (!dinfo)
439 return;
440
441 intelfbhw_disable_irq(dinfo);
442
443 fb_dealloc_cmap(&dinfo->info->cmap);
444 kfree(dinfo->info->pixmap.addr);
445
446 if (dinfo->registered)
447 unregister_framebuffer(dinfo->info);
448
449 unset_mtrr(dinfo);
450
451 if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
452 agp_unbind_memory(dinfo->gtt_fb_mem);
453 agp_free_memory(dinfo->gtt_fb_mem);
454 }
455 if (dinfo->gtt_cursor_mem) {
456 agp_unbind_memory(dinfo->gtt_cursor_mem);
457 agp_free_memory(dinfo->gtt_cursor_mem);
458 }
459 if (dinfo->gtt_ring_mem) {
460 agp_unbind_memory(dinfo->gtt_ring_mem);
461 agp_free_memory(dinfo->gtt_ring_mem);
462 }
463
464 #ifdef CONFIG_FB_INTEL_I2C
465 /* un-register I2C bus */
466 intelfb_delete_i2c_busses(dinfo);
467 #endif
468
469 if (dinfo->mmio_base)
470 iounmap((void __iomem *)dinfo->mmio_base);
471 if (dinfo->aperture.virtual)
472 iounmap((void __iomem *)dinfo->aperture.virtual);
473
474 if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
475 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
476 if (dinfo->flag & INTELFB_FB_ACQUIRED)
477 release_mem_region(dinfo->aperture.physical,
478 dinfo->aperture.size);
479 framebuffer_release(dinfo->info);
480 }
481
482 #define bailout(dinfo) do { \
483 DBG_MSG("bailout\n"); \
484 cleanup(dinfo); \
485 INF_MSG("Not going to register framebuffer, exiting...\n"); \
486 return -ENODEV; \
487 } while (0)
488
489
490 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
491 const struct pci_device_id *ent)
492 {
493 struct fb_info *info;
494 struct intelfb_info *dinfo;
495 int i, err, dvo;
496 int aperture_size, stolen_size;
497 struct agp_kern_info gtt_info;
498 int agp_memtype;
499 const char *s;
500 struct agp_bridge_data *bridge;
501 int aperture_bar = 0;
502 int mmio_bar = 1;
503 int offset;
504
505 DBG_MSG("intelfb_pci_register\n");
506
507 num_registered++;
508 if (num_registered != 1) {
509 ERR_MSG("Attempted to register %d devices "
510 "(should be only 1).\n", num_registered);
511 return -ENODEV;
512 }
513
514 info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
515 if (!info) {
516 ERR_MSG("Could not allocate memory for intelfb_info.\n");
517 return -ENODEV;
518 }
519 if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
520 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
521 goto err_out_cmap;
522 return -ENODEV;
523 }
524
525 dinfo = info->par;
526 dinfo->info = info;
527 dinfo->fbops = &intel_fb_ops;
528 dinfo->pdev = pdev;
529
530 /* Reserve pixmap space. */
531 info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
532 if (info->pixmap.addr == NULL) {
533 ERR_MSG("Cannot reserve pixmap memory.\n");
534 goto err_out_pixmap;
535 }
536
537 /* set early this option because it could be changed by tv encoder
538 driver */
539 dinfo->fixed_mode = fixed;
540
541 /* Enable device. */
542 if ((err = pci_enable_device(pdev))) {
543 ERR_MSG("Cannot enable device.\n");
544 cleanup(dinfo);
545 return -ENODEV;
546 }
547
548 /* Set base addresses. */
549 if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
550 (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
551 (ent->device == PCI_DEVICE_ID_INTEL_945G) ||
552 (ent->device == PCI_DEVICE_ID_INTEL_945GM)) {
553 aperture_bar = 2;
554 mmio_bar = 0;
555 }
556 dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
557 dinfo->aperture.size = pci_resource_len(pdev, aperture_bar);
558 dinfo->mmio_base_phys = pci_resource_start(pdev, mmio_bar);
559 DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
560 (unsigned long long)pci_resource_start(pdev, aperture_bar),
561 (unsigned long long)pci_resource_len(pdev, aperture_bar),
562 (unsigned long long)pci_resource_start(pdev, mmio_bar),
563 (unsigned long long)pci_resource_len(pdev, mmio_bar));
564
565 /* Reserve the fb and MMIO regions */
566 if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
567 INTELFB_MODULE_NAME)) {
568 ERR_MSG("Cannot reserve FB region.\n");
569 cleanup(dinfo);
570 return -ENODEV;
571 }
572
573 dinfo->flag |= INTELFB_FB_ACQUIRED;
574
575 if (!request_mem_region(dinfo->mmio_base_phys,
576 INTEL_REG_SIZE,
577 INTELFB_MODULE_NAME)) {
578 ERR_MSG("Cannot reserve MMIO region.\n");
579 cleanup(dinfo);
580 return -ENODEV;
581 }
582
583 dinfo->flag |= INTELFB_MMIO_ACQUIRED;
584
585 /* Get the chipset info. */
586 dinfo->pci_chipset = pdev->device;
587
588 if (intelfbhw_get_chipset(pdev, dinfo)) {
589 cleanup(dinfo);
590 return -ENODEV;
591 }
592
593 if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
594 cleanup(dinfo);
595 return -ENODEV;
596 }
597
598 INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
599 "stolen memory %dkB\n",
600 pdev->bus->number, PCI_SLOT(pdev->devfn),
601 PCI_FUNC(pdev->devfn), dinfo->name,
602 BtoMB(aperture_size), BtoKB(stolen_size));
603
604 /* Set these from the options. */
605 dinfo->accel = accel;
606 dinfo->hwcursor = hwcursor;
607
608 if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
609 INF_MSG("Acceleration is not supported for the %s chipset.\n",
610 dinfo->name);
611 dinfo->accel = 0;
612 }
613
614 /* Framebuffer parameters - Use all the stolen memory if >= vram */
615 if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
616 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
617 dinfo->fbmem_gart = 0;
618 } else {
619 dinfo->fb.size = MB(vram);
620 dinfo->fbmem_gart = 1;
621 }
622
623 /* Allocate space for the ring buffer and HW cursor if enabled. */
624 if (dinfo->accel) {
625 dinfo->ring.size = RINGBUFFER_SIZE;
626 dinfo->ring_tail_mask = dinfo->ring.size - 1;
627 }
628 if (dinfo->hwcursor)
629 dinfo->cursor.size = HW_CURSOR_SIZE;
630
631 /* Use agpgart to manage the GATT */
632 if (!(bridge = agp_backend_acquire(pdev))) {
633 ERR_MSG("cannot acquire agp\n");
634 cleanup(dinfo);
635 return -ENODEV;
636 }
637
638 /* get the current gatt info */
639 if (agp_copy_info(bridge, &gtt_info)) {
640 ERR_MSG("cannot get agp info\n");
641 agp_backend_release(bridge);
642 cleanup(dinfo);
643 return -ENODEV;
644 }
645
646 if (MB(voffset) < stolen_size)
647 offset = (stolen_size >> 12);
648 else
649 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
650
651 /* set the mem offsets - set them after the already used pages */
652 if (dinfo->accel)
653 dinfo->ring.offset = offset + gtt_info.current_memory;
654 if (dinfo->hwcursor)
655 dinfo->cursor.offset = offset +
656 + gtt_info.current_memory + (dinfo->ring.size >> 12);
657 if (dinfo->fbmem_gart)
658 dinfo->fb.offset = offset +
659 + gtt_info.current_memory + (dinfo->ring.size >> 12)
660 + (dinfo->cursor.size >> 12);
661
662 /* Allocate memories (which aren't stolen) */
663 /* Map the fb and MMIO regions */
664 /* ioremap only up to the end of used aperture */
665 dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
666 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
667 + dinfo->fb.size);
668 if (!dinfo->aperture.virtual) {
669 ERR_MSG("Cannot remap FB region.\n");
670 cleanup(dinfo);
671 return -ENODEV;
672 }
673
674 dinfo->mmio_base =
675 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
676 INTEL_REG_SIZE);
677 if (!dinfo->mmio_base) {
678 ERR_MSG("Cannot remap MMIO region.\n");
679 cleanup(dinfo);
680 return -ENODEV;
681 }
682
683 if (dinfo->accel) {
684 if (!(dinfo->gtt_ring_mem =
685 agp_allocate_memory(bridge, dinfo->ring.size >> 12,
686 AGP_NORMAL_MEMORY))) {
687 ERR_MSG("cannot allocate ring buffer memory\n");
688 agp_backend_release(bridge);
689 cleanup(dinfo);
690 return -ENOMEM;
691 }
692 if (agp_bind_memory(dinfo->gtt_ring_mem,
693 dinfo->ring.offset)) {
694 ERR_MSG("cannot bind ring buffer memory\n");
695 agp_backend_release(bridge);
696 cleanup(dinfo);
697 return -EBUSY;
698 }
699 dinfo->ring.physical = dinfo->aperture.physical
700 + (dinfo->ring.offset << 12);
701 dinfo->ring.virtual = dinfo->aperture.virtual
702 + (dinfo->ring.offset << 12);
703 dinfo->ring_head = 0;
704 }
705 if (dinfo->hwcursor) {
706 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
707 : AGP_NORMAL_MEMORY;
708 if (!(dinfo->gtt_cursor_mem =
709 agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
710 agp_memtype))) {
711 ERR_MSG("cannot allocate cursor memory\n");
712 agp_backend_release(bridge);
713 cleanup(dinfo);
714 return -ENOMEM;
715 }
716 if (agp_bind_memory(dinfo->gtt_cursor_mem,
717 dinfo->cursor.offset)) {
718 ERR_MSG("cannot bind cursor memory\n");
719 agp_backend_release(bridge);
720 cleanup(dinfo);
721 return -EBUSY;
722 }
723 if (dinfo->mobile)
724 dinfo->cursor.physical
725 = dinfo->gtt_cursor_mem->physical;
726 else
727 dinfo->cursor.physical = dinfo->aperture.physical
728 + (dinfo->cursor.offset << 12);
729 dinfo->cursor.virtual = dinfo->aperture.virtual
730 + (dinfo->cursor.offset << 12);
731 }
732 if (dinfo->fbmem_gart) {
733 if (!(dinfo->gtt_fb_mem =
734 agp_allocate_memory(bridge, dinfo->fb.size >> 12,
735 AGP_NORMAL_MEMORY))) {
736 WRN_MSG("cannot allocate framebuffer memory - use "
737 "the stolen one\n");
738 dinfo->fbmem_gart = 0;
739 }
740 if (agp_bind_memory(dinfo->gtt_fb_mem,
741 dinfo->fb.offset)) {
742 WRN_MSG("cannot bind framebuffer memory - use "
743 "the stolen one\n");
744 dinfo->fbmem_gart = 0;
745 }
746 }
747
748 /* update framebuffer memory parameters */
749 if (!dinfo->fbmem_gart)
750 dinfo->fb.offset = 0; /* starts at offset 0 */
751 dinfo->fb.physical = dinfo->aperture.physical
752 + (dinfo->fb.offset << 12);
753 dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
754 dinfo->fb_start = dinfo->fb.offset << 12;
755
756 /* release agpgart */
757 agp_backend_release(bridge);
758
759 if (mtrr)
760 set_mtrr(dinfo);
761
762 DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
763 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
764 dinfo->fb.virtual);
765 DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
766 dinfo->mmio_base_phys, INTEL_REG_SIZE,
767 dinfo->mmio_base);
768 DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
769 dinfo->ring.physical, dinfo->ring.size,
770 dinfo->ring.virtual);
771 DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
772 dinfo->cursor.physical, dinfo->cursor.size,
773 dinfo->cursor.virtual, dinfo->cursor.offset,
774 dinfo->cursor.physical);
775
776 DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
777 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
778 DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
779
780 if (probeonly)
781 bailout(dinfo);
782
783 /*
784 * Check if the LVDS port or any DVO ports are enabled. If so,
785 * don't allow mode switching
786 */
787 dvo = intelfbhw_check_non_crt(dinfo);
788 if (dvo) {
789 dinfo->fixed_mode = 1;
790 WRN_MSG("Non-CRT device is enabled ( ");
791 i = 0;
792 while (dvo) {
793 if (dvo & 1) {
794 s = intelfbhw_dvo_to_string(1 << i);
795 if (s)
796 printk("%s ", s);
797 }
798 dvo >>= 1;
799 ++i;
800 }
801 printk("). Disabling mode switching.\n");
802 }
803
804 if (bailearly == 1)
805 bailout(dinfo);
806
807 if (FIXED_MODE(dinfo) &&
808 screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
809 ERR_MSG("Video mode must be programmed at boot time.\n");
810 cleanup(dinfo);
811 return -ENODEV;
812 }
813
814 if (bailearly == 2)
815 bailout(dinfo);
816
817 /* Initialise dinfo and related data. */
818 /* If an initial mode was programmed at boot time, get its details. */
819 if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
820 get_initial_mode(dinfo);
821
822 if (bailearly == 3)
823 bailout(dinfo);
824
825 if (FIXED_MODE(dinfo)) /* remap fb address */
826 update_dinfo(dinfo, &dinfo->initial_var);
827
828 if (bailearly == 4)
829 bailout(dinfo);
830
831
832 if (intelfb_set_fbinfo(dinfo)) {
833 cleanup(dinfo);
834 return -ENODEV;
835 }
836
837 if (bailearly == 5)
838 bailout(dinfo);
839
840 #ifdef CONFIG_FB_INTEL_I2C
841 /* register I2C bus */
842 intelfb_create_i2c_busses(dinfo);
843 #endif
844
845 if (bailearly == 6)
846 bailout(dinfo);
847
848 pci_set_drvdata(pdev, dinfo);
849
850 /* Save the initial register state. */
851 i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
852 bailearly > 6 ? bailearly - 6 : 0);
853 if (i != 0) {
854 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
855 bailout(dinfo);
856 }
857
858 intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
859
860 if (bailearly == 18)
861 bailout(dinfo);
862
863 /* Cursor initialisation */
864 if (dinfo->hwcursor) {
865 intelfbhw_cursor_init(dinfo);
866 intelfbhw_cursor_reset(dinfo);
867 }
868
869 if (bailearly == 19)
870 bailout(dinfo);
871
872 /* 2d acceleration init */
873 if (dinfo->accel)
874 intelfbhw_2d_start(dinfo);
875
876 if (bailearly == 20)
877 bailout(dinfo);
878
879 if (noregister)
880 bailout(dinfo);
881
882 if (register_framebuffer(dinfo->info) < 0) {
883 ERR_MSG("Cannot register framebuffer.\n");
884 cleanup(dinfo);
885 return -ENODEV;
886 }
887
888 dinfo->registered = 1;
889 dinfo->open = 0;
890
891 init_waitqueue_head(&dinfo->vsync.wait);
892 spin_lock_init(&dinfo->int_lock);
893 dinfo->irq_flags = 0;
894 dinfo->vsync.pan_display = 0;
895 dinfo->vsync.pan_offset = 0;
896
897 return 0;
898
899 err_out_pixmap:
900 fb_dealloc_cmap(&info->cmap);
901 err_out_cmap:
902 framebuffer_release(info);
903 return -ENODEV;
904 }
905
906 static void __devexit
907 intelfb_pci_unregister(struct pci_dev *pdev)
908 {
909 struct intelfb_info *dinfo = pci_get_drvdata(pdev);
910
911 DBG_MSG("intelfb_pci_unregister\n");
912
913 if (!dinfo)
914 return;
915
916 cleanup(dinfo);
917
918 pci_set_drvdata(pdev, NULL);
919 }
920
921 /***************************************************************
922 * helper functions *
923 ***************************************************************/
924
925 int __inline__ 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 var_to_refresh(const struct fb_var_screeninfo *var)
942 {
943 int xtot = var->xres + var->left_margin + var->right_margin +
944 var->hsync_len;
945 int ytot = var->yres + var->upper_margin + var->lower_margin +
946 var->vsync_len;
947
948 return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
949 }
950
951 /***************************************************************
952 * Various intialisation functions *
953 ***************************************************************/
954
955 static void __devinit get_initial_mode(struct intelfb_info *dinfo)
956 {
957 struct fb_var_screeninfo *var;
958 int xtot, ytot;
959
960 DBG_MSG("get_initial_mode\n");
961
962 dinfo->initial_vga = 1;
963 dinfo->initial_fb_base = screen_info.lfb_base;
964 dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
965 dinfo->initial_pitch = screen_info.lfb_linelength;
966
967 var = &dinfo->initial_var;
968 memset(var, 0, sizeof(*var));
969 var->xres = screen_info.lfb_width;
970 var->yres = screen_info.lfb_height;
971 var->bits_per_pixel = screen_info.lfb_depth;
972 switch (screen_info.lfb_depth) {
973 case 15:
974 var->bits_per_pixel = 16;
975 break;
976 case 24:
977 var->bits_per_pixel = 32;
978 break;
979 }
980
981 DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
982 dinfo->initial_fb_base, dinfo->initial_video_ram,
983 BtoKB(dinfo->initial_video_ram));
984
985 DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
986 var->xres, var->yres, var->bits_per_pixel,
987 dinfo->initial_pitch);
988
989 /* Dummy timing values (assume 60Hz) */
990 var->left_margin = (var->xres / 8) & 0xf8;
991 var->right_margin = 32;
992 var->upper_margin = 16;
993 var->lower_margin = 4;
994 var->hsync_len = (var->xres / 8) & 0xf8;
995 var->vsync_len = 4;
996
997 xtot = var->xres + var->left_margin +
998 var->right_margin + var->hsync_len;
999 ytot = var->yres + var->upper_margin +
1000 var->lower_margin + var->vsync_len;
1001 var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1002
1003 var->height = -1;
1004 var->width = -1;
1005
1006 if (var->bits_per_pixel > 8) {
1007 var->red.offset = screen_info.red_pos;
1008 var->red.length = screen_info.red_size;
1009 var->green.offset = screen_info.green_pos;
1010 var->green.length = screen_info.green_size;
1011 var->blue.offset = screen_info.blue_pos;
1012 var->blue.length = screen_info.blue_size;
1013 var->transp.offset = screen_info.rsvd_pos;
1014 var->transp.length = screen_info.rsvd_size;
1015 } else {
1016 var->red.length = 8;
1017 var->green.length = 8;
1018 var->blue.length = 8;
1019 }
1020 }
1021
1022 static int __devinit intelfb_init_var(struct intelfb_info *dinfo)
1023 {
1024 struct fb_var_screeninfo *var;
1025 int msrc = 0;
1026
1027 DBG_MSG("intelfb_init_var\n");
1028
1029 var = &dinfo->info->var;
1030 if (FIXED_MODE(dinfo)) {
1031 memcpy(var, &dinfo->initial_var,
1032 sizeof(struct fb_var_screeninfo));
1033 msrc = 5;
1034 } else {
1035 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1036 u8 *edid_d = NULL;
1037
1038 if (edid_s) {
1039 edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1040
1041 if (edid_d) {
1042 fb_edid_to_monspecs(edid_d,
1043 &dinfo->info->monspecs);
1044 kfree(edid_d);
1045 }
1046 }
1047
1048 if (mode) {
1049 printk("intelfb: Looking for mode in private "
1050 "database\n");
1051 msrc = fb_find_mode(var, dinfo->info, mode,
1052 dinfo->info->monspecs.modedb,
1053 dinfo->info->monspecs.modedb_len,
1054 NULL, 0);
1055
1056 if (msrc && msrc > 1) {
1057 printk("intelfb: No mode in private database, "
1058 "intelfb: looking for mode in global "
1059 "database ");
1060 msrc = fb_find_mode(var, dinfo->info, mode,
1061 NULL, 0, NULL, 0);
1062
1063 if (msrc)
1064 msrc |= 8;
1065 }
1066
1067 }
1068
1069 if (!msrc)
1070 msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1071 NULL, 0, NULL, 0);
1072 }
1073
1074 if (!msrc) {
1075 ERR_MSG("Cannot find a suitable video mode.\n");
1076 return 1;
1077 }
1078
1079 INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1080 var->bits_per_pixel, var_to_refresh(var));
1081
1082 DBG_MSG("Initial video mode is from %d.\n", msrc);
1083
1084 #if ALLOCATE_FOR_PANNING
1085 /* Allow use of half of the video ram for panning */
1086 var->xres_virtual = var->xres;
1087 var->yres_virtual =
1088 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1089 if (var->yres_virtual < var->yres)
1090 var->yres_virtual = var->yres;
1091 #else
1092 var->yres_virtual = var->yres;
1093 #endif
1094
1095 if (dinfo->accel)
1096 var->accel_flags |= FB_ACCELF_TEXT;
1097 else
1098 var->accel_flags &= ~FB_ACCELF_TEXT;
1099
1100 return 0;
1101 }
1102
1103 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo)
1104 {
1105 struct fb_info *info = dinfo->info;
1106
1107 DBG_MSG("intelfb_set_fbinfo\n");
1108
1109 info->flags = FBINFO_FLAG_DEFAULT;
1110 info->fbops = &intel_fb_ops;
1111 info->pseudo_palette = dinfo->pseudo_palette;
1112
1113 info->pixmap.size = 64*1024;
1114 info->pixmap.buf_align = 8;
1115 info->pixmap.access_align = 32;
1116 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1117
1118 if (intelfb_init_var(dinfo))
1119 return 1;
1120
1121 info->pixmap.scan_align = 1;
1122 strcpy(info->fix.id, dinfo->name);
1123 info->fix.smem_start = dinfo->fb.physical;
1124 info->fix.smem_len = dinfo->fb.size;
1125 info->fix.type = FB_TYPE_PACKED_PIXELS;
1126 info->fix.type_aux = 0;
1127 info->fix.xpanstep = 8;
1128 info->fix.ypanstep = 1;
1129 info->fix.ywrapstep = 0;
1130 info->fix.mmio_start = dinfo->mmio_base_phys;
1131 info->fix.mmio_len = INTEL_REG_SIZE;
1132 info->fix.accel = FB_ACCEL_I830;
1133 update_dinfo(dinfo, &info->var);
1134
1135 return 0;
1136 }
1137
1138 /* Update dinfo to match the active video mode. */
1139 static void update_dinfo(struct intelfb_info *dinfo,
1140 struct fb_var_screeninfo *var)
1141 {
1142 DBG_MSG("update_dinfo\n");
1143
1144 dinfo->bpp = var->bits_per_pixel;
1145 dinfo->depth = intelfb_var_to_depth(var);
1146 dinfo->xres = var->xres;
1147 dinfo->yres = var->xres;
1148 dinfo->pixclock = var->pixclock;
1149
1150 dinfo->info->fix.visual = dinfo->visual;
1151 dinfo->info->fix.line_length = dinfo->pitch;
1152
1153 switch (dinfo->bpp) {
1154 case 8:
1155 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1156 dinfo->pitch = var->xres_virtual;
1157 break;
1158 case 16:
1159 dinfo->visual = FB_VISUAL_TRUECOLOR;
1160 dinfo->pitch = var->xres_virtual * 2;
1161 break;
1162 case 32:
1163 dinfo->visual = FB_VISUAL_TRUECOLOR;
1164 dinfo->pitch = var->xres_virtual * 4;
1165 break;
1166 }
1167
1168 /* Make sure the line length is a aligned correctly. */
1169 if (IS_I9XX(dinfo))
1170 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1171 else
1172 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1173
1174 if (FIXED_MODE(dinfo))
1175 dinfo->pitch = dinfo->initial_pitch;
1176
1177 dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1178 dinfo->info->fix.line_length = dinfo->pitch;
1179 dinfo->info->fix.visual = dinfo->visual;
1180 }
1181
1182 /* fbops functions */
1183
1184 /***************************************************************
1185 * fbdev interface *
1186 ***************************************************************/
1187
1188 static int intelfb_open(struct fb_info *info, int user)
1189 {
1190 struct intelfb_info *dinfo = GET_DINFO(info);
1191
1192 if (user)
1193 dinfo->open++;
1194
1195 return 0;
1196 }
1197
1198 static int intelfb_release(struct fb_info *info, int user)
1199 {
1200 struct intelfb_info *dinfo = GET_DINFO(info);
1201
1202 if (user) {
1203 dinfo->open--;
1204 msleep(1);
1205 if (!dinfo->open)
1206 intelfbhw_disable_irq(dinfo);
1207 }
1208
1209 return 0;
1210 }
1211
1212 static int intelfb_check_var(struct fb_var_screeninfo *var,
1213 struct fb_info *info)
1214 {
1215 int change_var = 0;
1216 struct fb_var_screeninfo v;
1217 struct intelfb_info *dinfo;
1218 static int first = 1;
1219 int i;
1220 /* Good pitches to allow tiling. Don't care about pitches < 1024. */
1221 static const int pitches[] = {
1222 128 * 8,
1223 128 * 16,
1224 128 * 32,
1225 128 * 64,
1226 0
1227 };
1228
1229 DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1230
1231 dinfo = GET_DINFO(info);
1232
1233 /* update the pitch */
1234 if (intelfbhw_validate_mode(dinfo, var) != 0)
1235 return -EINVAL;
1236
1237 v = *var;
1238
1239 for (i = 0; pitches[i] != 0; i++) {
1240 if (pitches[i] >= v.xres_virtual) {
1241 v.xres_virtual = pitches[i];
1242 break;
1243 }
1244 }
1245
1246 /* Check for a supported bpp. */
1247 if (v.bits_per_pixel <= 8)
1248 v.bits_per_pixel = 8;
1249 else if (v.bits_per_pixel <= 16) {
1250 if (v.bits_per_pixel == 16)
1251 v.green.length = 6;
1252 v.bits_per_pixel = 16;
1253 } else if (v.bits_per_pixel <= 32)
1254 v.bits_per_pixel = 32;
1255 else
1256 return -EINVAL;
1257
1258 change_var = ((info->var.xres != var->xres) ||
1259 (info->var.yres != var->yres) ||
1260 (info->var.xres_virtual != var->xres_virtual) ||
1261 (info->var.yres_virtual != var->yres_virtual) ||
1262 (info->var.bits_per_pixel != var->bits_per_pixel) ||
1263 memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1264 memcmp(&info->var.green, &var->green,
1265 sizeof(var->green)) ||
1266 memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1267
1268 if (FIXED_MODE(dinfo) &&
1269 (change_var ||
1270 var->yres_virtual > dinfo->initial_var.yres_virtual ||
1271 var->yres_virtual < dinfo->initial_var.yres ||
1272 var->xoffset || var->nonstd)) {
1273 if (first) {
1274 ERR_MSG("Changing the video mode is not supported.\n");
1275 first = 0;
1276 }
1277 return -EINVAL;
1278 }
1279
1280 switch (intelfb_var_to_depth(&v)) {
1281 case 8:
1282 v.red.offset = v.green.offset = v.blue.offset = 0;
1283 v.red.length = v.green.length = v.blue.length = 8;
1284 v.transp.offset = v.transp.length = 0;
1285 break;
1286 case 15:
1287 v.red.offset = 10;
1288 v.green.offset = 5;
1289 v.blue.offset = 0;
1290 v.red.length = v.green.length = v.blue.length = 5;
1291 v.transp.offset = v.transp.length = 0;
1292 break;
1293 case 16:
1294 v.red.offset = 11;
1295 v.green.offset = 5;
1296 v.blue.offset = 0;
1297 v.red.length = 5;
1298 v.green.length = 6;
1299 v.blue.length = 5;
1300 v.transp.offset = v.transp.length = 0;
1301 break;
1302 case 24:
1303 v.red.offset = 16;
1304 v.green.offset = 8;
1305 v.blue.offset = 0;
1306 v.red.length = v.green.length = v.blue.length = 8;
1307 v.transp.offset = v.transp.length = 0;
1308 break;
1309 case 32:
1310 v.red.offset = 16;
1311 v.green.offset = 8;
1312 v.blue.offset = 0;
1313 v.red.length = v.green.length = v.blue.length = 8;
1314 v.transp.offset = 24;
1315 v.transp.length = 8;
1316 break;
1317 }
1318
1319 if (v.xoffset < 0)
1320 v.xoffset = 0;
1321 if (v.yoffset < 0)
1322 v.yoffset = 0;
1323
1324 if (v.xoffset > v.xres_virtual - v.xres)
1325 v.xoffset = v.xres_virtual - v.xres;
1326 if (v.yoffset > v.yres_virtual - v.yres)
1327 v.yoffset = v.yres_virtual - v.yres;
1328
1329 v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1330 v.transp.msb_right = 0;
1331
1332 *var = v;
1333
1334 return 0;
1335 }
1336
1337 static int intelfb_set_par(struct fb_info *info)
1338 {
1339 struct intelfb_hwstate *hw;
1340 struct intelfb_info *dinfo = GET_DINFO(info);
1341
1342 if (FIXED_MODE(dinfo)) {
1343 ERR_MSG("Changing the video mode is not supported.\n");
1344 return -EINVAL;
1345 }
1346
1347 hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1348 if (!hw)
1349 return -ENOMEM;
1350
1351 DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1352 info->var.yres, info->var.bits_per_pixel);
1353
1354 intelfb_blank(FB_BLANK_POWERDOWN, info);
1355
1356 if (ACCEL(dinfo, info))
1357 intelfbhw_2d_stop(dinfo);
1358
1359 memcpy(hw, &dinfo->save_state, sizeof(*hw));
1360 if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1361 goto invalid_mode;
1362 if (intelfbhw_program_mode(dinfo, hw, 0))
1363 goto invalid_mode;
1364
1365 #if REGDUMP > 0
1366 intelfbhw_read_hw_state(dinfo, hw, 0);
1367 intelfbhw_print_hw_state(dinfo, hw);
1368 #endif
1369
1370 update_dinfo(dinfo, &info->var);
1371
1372 if (ACCEL(dinfo, info))
1373 intelfbhw_2d_start(dinfo);
1374
1375 intelfb_pan_display(&info->var, info);
1376
1377 intelfb_blank(FB_BLANK_UNBLANK, info);
1378
1379 if (ACCEL(dinfo, info)) {
1380 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1381 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1382 FBINFO_HWACCEL_IMAGEBLIT;
1383 } else
1384 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1385
1386 kfree(hw);
1387 return 0;
1388 invalid_mode:
1389 kfree(hw);
1390 return -EINVAL;
1391 }
1392
1393 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1394 unsigned blue, unsigned transp,
1395 struct fb_info *info)
1396 {
1397 struct intelfb_info *dinfo = GET_DINFO(info);
1398
1399 #if VERBOSE > 0
1400 DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1401 #endif
1402
1403 if (regno > 255)
1404 return 1;
1405
1406 if (dinfo->depth == 8) {
1407 red >>= 8;
1408 green >>= 8;
1409 blue >>= 8;
1410
1411 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1412 transp);
1413 }
1414
1415 if (regno < 16) {
1416 switch (dinfo->depth) {
1417 case 15:
1418 dinfo->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
1419 ((green & 0xf800) >> 6) |
1420 ((blue & 0xf800) >> 11);
1421 break;
1422 case 16:
1423 dinfo->pseudo_palette[regno] = (red & 0xf800) |
1424 ((green & 0xfc00) >> 5) |
1425 ((blue & 0xf800) >> 11);
1426 break;
1427 case 24:
1428 dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1429 (green & 0xff00) |
1430 ((blue & 0xff00) >> 8);
1431 break;
1432 }
1433 }
1434
1435 return 0;
1436 }
1437
1438 static int intelfb_blank(int blank, struct fb_info *info)
1439 {
1440 intelfbhw_do_blank(blank, info);
1441 return 0;
1442 }
1443
1444 static int intelfb_pan_display(struct fb_var_screeninfo *var,
1445 struct fb_info *info)
1446 {
1447 intelfbhw_pan_display(var, info);
1448 return 0;
1449 }
1450
1451 /* When/if we have our own ioctls. */
1452 static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1453 unsigned long arg)
1454 {
1455 int retval = 0;
1456 struct intelfb_info *dinfo = GET_DINFO(info);
1457 u32 pipe = 0;
1458
1459 switch (cmd) {
1460 case FBIO_WAITFORVSYNC:
1461 if (get_user(pipe, (__u32 __user *)arg))
1462 return -EFAULT;
1463
1464 retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1465 break;
1466 default:
1467 break;
1468 }
1469
1470 return retval;
1471 }
1472
1473 static void intelfb_fillrect (struct fb_info *info,
1474 const struct fb_fillrect *rect)
1475 {
1476 struct intelfb_info *dinfo = GET_DINFO(info);
1477 u32 rop, color;
1478
1479 #if VERBOSE > 0
1480 DBG_MSG("intelfb_fillrect\n");
1481 #endif
1482
1483 if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1484 return cfb_fillrect(info, rect);
1485
1486 if (rect->rop == ROP_COPY)
1487 rop = PAT_ROP_GXCOPY;
1488 else /* ROP_XOR */
1489 rop = PAT_ROP_GXXOR;
1490
1491 if (dinfo->depth != 8)
1492 color = dinfo->pseudo_palette[rect->color];
1493 else
1494 color = rect->color;
1495
1496 intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1497 rect->width, rect->height, color,
1498 dinfo->pitch, info->var.bits_per_pixel,
1499 rop);
1500 }
1501
1502 static void intelfb_copyarea(struct fb_info *info,
1503 const struct fb_copyarea *region)
1504 {
1505 struct intelfb_info *dinfo = GET_DINFO(info);
1506
1507 #if VERBOSE > 0
1508 DBG_MSG("intelfb_copyarea\n");
1509 #endif
1510
1511 if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1512 return cfb_copyarea(info, region);
1513
1514 intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1515 region->dy, region->width, region->height,
1516 dinfo->pitch, info->var.bits_per_pixel);
1517 }
1518
1519 static void intelfb_imageblit(struct fb_info *info,
1520 const struct fb_image *image)
1521 {
1522 struct intelfb_info *dinfo = GET_DINFO(info);
1523 u32 fgcolor, bgcolor;
1524
1525 #if VERBOSE > 0
1526 DBG_MSG("intelfb_imageblit\n");
1527 #endif
1528
1529 if (!ACCEL(dinfo, info) || dinfo->depth == 4
1530 || image->depth != 1)
1531 return cfb_imageblit(info, image);
1532
1533 if (dinfo->depth != 8) {
1534 fgcolor = dinfo->pseudo_palette[image->fg_color];
1535 bgcolor = dinfo->pseudo_palette[image->bg_color];
1536 } else {
1537 fgcolor = image->fg_color;
1538 bgcolor = image->bg_color;
1539 }
1540
1541 if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1542 image->height, image->data,
1543 image->dx, image->dy,
1544 dinfo->pitch, info->var.bits_per_pixel))
1545 return cfb_imageblit(info, image);
1546 }
1547
1548 static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1549 {
1550 struct intelfb_info *dinfo = GET_DINFO(info);
1551 u32 physical;
1552 #if VERBOSE > 0
1553 DBG_MSG("intelfb_cursor\n");
1554 #endif
1555
1556 if (!dinfo->hwcursor)
1557 return -ENODEV;
1558
1559 intelfbhw_cursor_hide(dinfo);
1560
1561 /* If XFree killed the cursor - restore it */
1562 physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1563 (dinfo->cursor.offset << 12);
1564
1565 if (INREG(CURSOR_A_BASEADDR) != physical) {
1566 u32 fg, bg;
1567
1568 DBG_MSG("the cursor was killed - restore it !!\n");
1569 DBG_MSG("size %d, %d pos %d, %d\n",
1570 cursor->image.width, cursor->image.height,
1571 cursor->image.dx, cursor->image.dy);
1572
1573 intelfbhw_cursor_init(dinfo);
1574 intelfbhw_cursor_reset(dinfo);
1575 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1576 cursor->image.dy);
1577
1578 if (dinfo->depth != 8) {
1579 fg =dinfo->pseudo_palette[cursor->image.fg_color];
1580 bg =dinfo->pseudo_palette[cursor->image.bg_color];
1581 } else {
1582 fg = cursor->image.fg_color;
1583 bg = cursor->image.bg_color;
1584 }
1585 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1586 intelfbhw_cursor_load(dinfo, cursor->image.width,
1587 cursor->image.height,
1588 dinfo->cursor_src);
1589
1590 if (cursor->enable)
1591 intelfbhw_cursor_show(dinfo);
1592 return 0;
1593 }
1594
1595 if (cursor->set & FB_CUR_SETPOS) {
1596 u32 dx, dy;
1597
1598 dx = cursor->image.dx - info->var.xoffset;
1599 dy = cursor->image.dy - info->var.yoffset;
1600
1601 intelfbhw_cursor_setpos(dinfo, dx, dy);
1602 }
1603
1604 if (cursor->set & FB_CUR_SETSIZE) {
1605 if (cursor->image.width > 64 || cursor->image.height > 64)
1606 return -ENXIO;
1607
1608 intelfbhw_cursor_reset(dinfo);
1609 }
1610
1611 if (cursor->set & FB_CUR_SETCMAP) {
1612 u32 fg, bg;
1613
1614 if (dinfo->depth != 8) {
1615 fg = dinfo->pseudo_palette[cursor->image.fg_color];
1616 bg = dinfo->pseudo_palette[cursor->image.bg_color];
1617 } else {
1618 fg = cursor->image.fg_color;
1619 bg = cursor->image.bg_color;
1620 }
1621
1622 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1623 }
1624
1625 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1626 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1627 u32 size = s_pitch * cursor->image.height;
1628 u8 *dat = (u8 *) cursor->image.data;
1629 u8 *msk = (u8 *) cursor->mask;
1630 u8 src[64];
1631 u32 i;
1632
1633 if (cursor->image.depth != 1)
1634 return -ENXIO;
1635
1636 switch (cursor->rop) {
1637 case ROP_XOR:
1638 for (i = 0; i < size; i++)
1639 src[i] = dat[i] ^ msk[i];
1640 break;
1641 case ROP_COPY:
1642 default:
1643 for (i = 0; i < size; i++)
1644 src[i] = dat[i] & msk[i];
1645 break;
1646 }
1647
1648 /* save the bitmap to restore it when XFree will
1649 make the cursor dirty */
1650 memcpy(dinfo->cursor_src, src, size);
1651
1652 intelfbhw_cursor_load(dinfo, cursor->image.width,
1653 cursor->image.height, src);
1654 }
1655
1656 if (cursor->enable)
1657 intelfbhw_cursor_show(dinfo);
1658
1659 return 0;
1660 }
1661
1662 static int intelfb_sync(struct fb_info *info)
1663 {
1664 struct intelfb_info *dinfo = GET_DINFO(info);
1665
1666 #if VERBOSE > 0
1667 DBG_MSG("intelfb_sync\n");
1668 #endif
1669
1670 if (dinfo->ring_lockup)
1671 return 0;
1672
1673 intelfbhw_do_sync(dinfo);
1674 return 0;
1675 }
1676
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