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RT-AC66 3.0.0.4.374.130 core
[tomato.git] / release / src-rt-6.x / linux / linux-2.6 / drivers / video / intelfb / intelfbdrv.c
blobb75eda84858f62ad62937242903ba36bcf471811
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 * TODO:
104 *
105 *
106 * Wish List:
107 *
108 *
109 */
110
111 #include <linux/module.h>
112 #include <linux/kernel.h>
113 #include <linux/errno.h>
114 #include <linux/string.h>
115 #include <linux/mm.h>
116 #include <linux/slab.h>
117 #include <linux/delay.h>
118 #include <linux/fb.h>
119 #include <linux/ioport.h>
120 #include <linux/init.h>
121 #include <linux/pci.h>
122 #include <linux/vmalloc.h>
123 #include <linux/pagemap.h>
124 #include <linux/screen_info.h>
125
126 #include <asm/io.h>
127
128 #ifdef CONFIG_MTRR
129 #include <asm/mtrr.h>
130 #endif
131
132 #include "intelfb.h"
133 #include "intelfbhw.h"
134 #include "../edid.h"
135
136 static void __devinit get_initial_mode(struct intelfb_info *dinfo);
137 static void update_dinfo(struct intelfb_info *dinfo,
138 struct fb_var_screeninfo *var);
139 static int intelfb_open(struct fb_info *info, int user);
140 static int intelfb_release(struct fb_info *info, int user);
141 static int intelfb_check_var(struct fb_var_screeninfo *var,
142 struct fb_info *info);
143 static int intelfb_set_par(struct fb_info *info);
144 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
145 unsigned blue, unsigned transp,
146 struct fb_info *info);
147
148 static int intelfb_blank(int blank, struct fb_info *info);
149 static int intelfb_pan_display(struct fb_var_screeninfo *var,
150 struct fb_info *info);
151
152 static void intelfb_fillrect(struct fb_info *info,
153 const struct fb_fillrect *rect);
154 static void intelfb_copyarea(struct fb_info *info,
155 const struct fb_copyarea *region);
156 static void intelfb_imageblit(struct fb_info *info,
157 const struct fb_image *image);
158 static int intelfb_cursor(struct fb_info *info,
159 struct fb_cursor *cursor);
160
161 static int intelfb_sync(struct fb_info *info);
162
163 static int intelfb_ioctl(struct fb_info *info,
164 unsigned int cmd, unsigned long arg);
165
166 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
167 const struct pci_device_id *ent);
168 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
169 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
170
171 /*
172 * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
173 * mobile chipsets from being registered.
174 */
175 #if DETECT_VGA_CLASS_ONLY
176 #define INTELFB_CLASS_MASK ~0 << 8
177 #else
178 #define INTELFB_CLASS_MASK 0
179 #endif
180
181 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
182 { 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 },
183 { 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 },
184 { 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 },
185 { 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 },
186 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915G },
187 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915GM },
188 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945G },
189 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GM },
190 { 0, }
191 };
192
193 /* Global data */
194 static int num_registered = 0;
195
196 /* fb ops */
197 static struct fb_ops intel_fb_ops = {
198 .owner = THIS_MODULE,
199 .fb_open = intelfb_open,
200 .fb_release = intelfb_release,
201 .fb_check_var = intelfb_check_var,
202 .fb_set_par = intelfb_set_par,
203 .fb_setcolreg = intelfb_setcolreg,
204 .fb_blank = intelfb_blank,
205 .fb_pan_display = intelfb_pan_display,
206 .fb_fillrect = intelfb_fillrect,
207 .fb_copyarea = intelfb_copyarea,
208 .fb_imageblit = intelfb_imageblit,
209 .fb_cursor = intelfb_cursor,
210 .fb_sync = intelfb_sync,
211 .fb_ioctl = intelfb_ioctl
212 };
213
214 /* PCI driver module table */
215 static struct pci_driver intelfb_driver = {
216 .name = "intelfb",
217 .id_table = intelfb_pci_table,
218 .probe = intelfb_pci_register,
219 .remove = __devexit_p(intelfb_pci_unregister)
220 };
221
222 /* Module description/parameters */
223 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
224 "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
225 MODULE_DESCRIPTION(
226 "Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS " chipsets");
227 MODULE_LICENSE("Dual BSD/GPL");
228 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
229
230 static int accel = 1;
231 static int vram = 4;
232 static int hwcursor = 0;
233 static int mtrr = 1;
234 static int fixed = 0;
235 static int noinit = 0;
236 static int noregister = 0;
237 static int probeonly = 0;
238 static int idonly = 0;
239 static int bailearly = 0;
240 static int voffset = 48;
241 static char *mode = NULL;
242
243 module_param(accel, bool, S_IRUGO);
244 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
245 module_param(vram, int, S_IRUGO);
246 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
247 module_param(voffset, int, S_IRUGO);
248 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
249 module_param(hwcursor, bool, S_IRUGO);
250 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
251 module_param(mtrr, bool, S_IRUGO);
252 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
253 module_param(fixed, bool, S_IRUGO);
254 MODULE_PARM_DESC(fixed, "Disable mode switching");
255 module_param(noinit, bool, 0);
256 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
257 module_param(noregister, bool, 0);
258 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
259 module_param(probeonly, bool, 0);
260 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
261 module_param(idonly, bool, 0);
262 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
263 module_param(bailearly, bool, 0);
264 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
265 module_param(mode, charp, S_IRUGO);
266 MODULE_PARM_DESC(mode,
267 "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
268
269 #ifndef MODULE
270 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
271 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
272 #define OPT_STRVAL(opt, name) (opt + strlen(name))
273
274 static __inline__ char *
275 get_opt_string(const char *this_opt, const char *name)
276 {
277 const char *p;
278 int i;
279 char *ret;
280
281 p = OPT_STRVAL(this_opt, name);
282 i = 0;
283 while (p[i] && p[i] != ' ' && p[i] != ',')
284 i++;
285 ret = kmalloc(i + 1, GFP_KERNEL);
286 if (ret) {
287 strncpy(ret, p, i);
288 ret[i] = '\0';
289 }
290 return ret;
291 }
292
293 static __inline__ int
294 get_opt_int(const char *this_opt, const char *name, int *ret)
295 {
296 if (!ret)
297 return 0;
298
299 if (!OPT_EQUAL(this_opt, name))
300 return 0;
301
302 *ret = OPT_INTVAL(this_opt, name);
303 return 1;
304 }
305
306 static __inline__ int
307 get_opt_bool(const char *this_opt, const char *name, int *ret)
308 {
309 if (!ret)
310 return 0;
311
312 if (OPT_EQUAL(this_opt, name)) {
313 if (this_opt[strlen(name)] == '=')
314 *ret = simple_strtoul(this_opt + strlen(name) + 1,
315 NULL, 0);
316 else
317 *ret = 1;
318 } else {
319 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
320 *ret = 0;
321 else
322 return 0;
323 }
324 return 1;
325 }
326
327 static int __init
328 intelfb_setup(char *options)
329 {
330 char *this_opt;
331
332 DBG_MSG("intelfb_setup\n");
333
334 if (!options || !*options) {
335 DBG_MSG("no options\n");
336 return 0;
337 } else
338 DBG_MSG("options: %s\n", options);
339
340 /*
341 * These are the built-in options analogous to the module parameters
342 * defined above.
343 *
344 * The syntax is:
345 *
346 * video=intelfb:[mode][,<param>=<val>] ...
347 *
348 * e.g.,
349 *
350 * video=intelfb:1024x768-16@75,accel=0
351 */
352
353 while ((this_opt = strsep(&options, ","))) {
354 if (!*this_opt)
355 continue;
356 if (get_opt_bool(this_opt, "accel", &accel))
357 ;
358 else if (get_opt_int(this_opt, "vram", &vram))
359 ;
360 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
361 ;
362 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
363 ;
364 else if (get_opt_bool(this_opt, "fixed", &fixed))
365 ;
366 else if (get_opt_bool(this_opt, "init", &noinit))
367 noinit = !noinit;
368 else if (OPT_EQUAL(this_opt, "mode="))
369 mode = get_opt_string(this_opt, "mode=");
370 else
371 mode = this_opt;
372 }
373
374 return 0;
375 }
376
377 #endif
378
379 static int __init
380 intelfb_init(void)
381 {
382 #ifndef MODULE
383 char *option = NULL;
384 #endif
385
386 DBG_MSG("intelfb_init\n");
387
388 INF_MSG("Framebuffer driver for "
389 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
390 INF_MSG("Version " INTELFB_VERSION "\n");
391
392 if (idonly)
393 return -ENODEV;
394
395 #ifndef MODULE
396 if (fb_get_options("intelfb", &option))
397 return -ENODEV;
398 intelfb_setup(option);
399 #endif
400
401 return pci_register_driver(&intelfb_driver);
402 }
403
404 static void __exit
405 intelfb_exit(void)
406 {
407 DBG_MSG("intelfb_exit\n");
408 pci_unregister_driver(&intelfb_driver);
409 }
410
411 module_init(intelfb_init);
412 module_exit(intelfb_exit);
413
414 /***************************************************************
415 * mtrr support functions *
416 ***************************************************************/
417
418 #ifdef CONFIG_MTRR
419 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
420 {
421 dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
422 dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
423 if (dinfo->mtrr_reg < 0) {
424 ERR_MSG("unable to set MTRR\n");
425 return;
426 }
427 dinfo->has_mtrr = 1;
428 }
429 static inline void unset_mtrr(struct intelfb_info *dinfo)
430 {
431 if (dinfo->has_mtrr)
432 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
433 dinfo->aperture.size);
434 }
435 #else
436 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
437
438 #define unset_mtrr(x) do { } while (0)
439 #endif /* CONFIG_MTRR */
440
441 /***************************************************************
442 * driver init / cleanup *
443 ***************************************************************/
444
445 static void
446 cleanup(struct intelfb_info *dinfo)
447 {
448 DBG_MSG("cleanup\n");
449
450 if (!dinfo)
451 return;
452
453 intelfbhw_disable_irq(dinfo);
454
455 fb_dealloc_cmap(&dinfo->info->cmap);
456 kfree(dinfo->info->pixmap.addr);
457
458 if (dinfo->registered)
459 unregister_framebuffer(dinfo->info);
460
461 unset_mtrr(dinfo);
462
463 if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
464 agp_unbind_memory(dinfo->gtt_fb_mem);
465 agp_free_memory(dinfo->gtt_fb_mem);
466 }
467 if (dinfo->gtt_cursor_mem) {
468 agp_unbind_memory(dinfo->gtt_cursor_mem);
469 agp_free_memory(dinfo->gtt_cursor_mem);
470 }
471 if (dinfo->gtt_ring_mem) {
472 agp_unbind_memory(dinfo->gtt_ring_mem);
473 agp_free_memory(dinfo->gtt_ring_mem);
474 }
475
476 #ifdef CONFIG_FB_INTEL_I2C
477 /* un-register I2C bus */
478 intelfb_delete_i2c_busses(dinfo);
479 #endif
480
481 if (dinfo->mmio_base)
482 iounmap((void __iomem *)dinfo->mmio_base);
483 if (dinfo->aperture.virtual)
484 iounmap((void __iomem *)dinfo->aperture.virtual);
485
486 if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
487 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
488 if (dinfo->flag & INTELFB_FB_ACQUIRED)
489 release_mem_region(dinfo->aperture.physical,
490 dinfo->aperture.size);
491 framebuffer_release(dinfo->info);
492 }
493
494 #define bailout(dinfo) do { \
495 DBG_MSG("bailout\n"); \
496 cleanup(dinfo); \
497 INF_MSG("Not going to register framebuffer, exiting...\n"); \
498 return -ENODEV; \
499 } while (0)
500
501
502 static int __devinit
503 intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
504 {
505 struct fb_info *info;
506 struct intelfb_info *dinfo;
507 int i, err, dvo;
508 int aperture_size, stolen_size;
509 struct agp_kern_info gtt_info;
510 int agp_memtype;
511 const char *s;
512 struct agp_bridge_data *bridge;
513 int aperture_bar = 0;
514 int mmio_bar = 1;
515 int offset;
516
517 DBG_MSG("intelfb_pci_register\n");
518
519 num_registered++;
520 if (num_registered != 1) {
521 ERR_MSG("Attempted to register %d devices "
522 "(should be only 1).\n", num_registered);
523 return -ENODEV;
524 }
525
526 info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
527 if (!info) {
528 ERR_MSG("Could not allocate memory for intelfb_info.\n");
529 return -ENODEV;
530 }
531 if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
532 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
533 goto err_out_cmap;
534 return -ENODEV;
535 }
536
537 dinfo = info->par;
538 dinfo->info = info;
539 dinfo->fbops = &intel_fb_ops;
540 dinfo->pdev = pdev;
541
542 /* Reserve pixmap space. */
543 info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
544 if (info->pixmap.addr == NULL) {
545 ERR_MSG("Cannot reserve pixmap memory.\n");
546 goto err_out_pixmap;
547 }
548
549 /* set early this option because it could be changed by tv encoder
550 driver */
551 dinfo->fixed_mode = fixed;
552
553 /* Enable device. */
554 if ((err = pci_enable_device(pdev))) {
555 ERR_MSG("Cannot enable device.\n");
556 cleanup(dinfo);
557 return -ENODEV;
558 }
559
560 /* Set base addresses. */
561 if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
562 (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
563 (ent->device == PCI_DEVICE_ID_INTEL_945G) ||
564 (ent->device == PCI_DEVICE_ID_INTEL_945GM)) {
565 aperture_bar = 2;
566 mmio_bar = 0;
567 }
568 dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
569 dinfo->aperture.size = pci_resource_len(pdev, aperture_bar);
570 dinfo->mmio_base_phys = pci_resource_start(pdev, mmio_bar);
571 DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
572 (unsigned long long)pci_resource_start(pdev, aperture_bar),
573 (unsigned long long)pci_resource_len(pdev, aperture_bar),
574 (unsigned long long)pci_resource_start(pdev, mmio_bar),
575 (unsigned long long)pci_resource_len(pdev, mmio_bar));
576
577 /* Reserve the fb and MMIO regions */
578 if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
579 INTELFB_MODULE_NAME)) {
580 ERR_MSG("Cannot reserve FB region.\n");
581 cleanup(dinfo);
582 return -ENODEV;
583 }
584
585 dinfo->flag |= INTELFB_FB_ACQUIRED;
586
587 if (!request_mem_region(dinfo->mmio_base_phys,
588 INTEL_REG_SIZE,
589 INTELFB_MODULE_NAME)) {
590 ERR_MSG("Cannot reserve MMIO region.\n");
591 cleanup(dinfo);
592 return -ENODEV;
593 }
594
595 dinfo->flag |= INTELFB_MMIO_ACQUIRED;
596
597 /* Get the chipset info. */
598 dinfo->pci_chipset = pdev->device;
599
600 if (intelfbhw_get_chipset(pdev, dinfo)) {
601 cleanup(dinfo);
602 return -ENODEV;
603 }
604
605 if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
606 cleanup(dinfo);
607 return -ENODEV;
608 }
609
610 INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
611 "stolen memory %dkB\n",
612 pdev->bus->number, PCI_SLOT(pdev->devfn),
613 PCI_FUNC(pdev->devfn), dinfo->name,
614 BtoMB(aperture_size), BtoKB(stolen_size));
615
616 /* Set these from the options. */
617 dinfo->accel = accel;
618 dinfo->hwcursor = hwcursor;
619
620 if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
621 INF_MSG("Acceleration is not supported for the %s chipset.\n",
622 dinfo->name);
623 dinfo->accel = 0;
624 }
625
626 /* Framebuffer parameters - Use all the stolen memory if >= vram */
627 if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
628 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
629 dinfo->fbmem_gart = 0;
630 } else {
631 dinfo->fb.size = MB(vram);
632 dinfo->fbmem_gart = 1;
633 }
634
635 /* Allocate space for the ring buffer and HW cursor if enabled. */
636 if (dinfo->accel) {
637 dinfo->ring.size = RINGBUFFER_SIZE;
638 dinfo->ring_tail_mask = dinfo->ring.size - 1;
639 }
640 if (dinfo->hwcursor) {
641 dinfo->cursor.size = HW_CURSOR_SIZE;
642 }
643
644 /* Use agpgart to manage the GATT */
645 if (!(bridge = agp_backend_acquire(pdev))) {
646 ERR_MSG("cannot acquire agp\n");
647 cleanup(dinfo);
648 return -ENODEV;
649 }
650
651 /* get the current gatt info */
652 if (agp_copy_info(bridge, &gtt_info)) {
653 ERR_MSG("cannot get agp info\n");
654 agp_backend_release(bridge);
655 cleanup(dinfo);
656 return -ENODEV;
657 }
658
659 if (MB(voffset) < stolen_size)
660 offset = (stolen_size >> 12);
661 else
662 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
663
664 /* set the mem offsets - set them after the already used pages */
665 if (dinfo->accel) {
666 dinfo->ring.offset = offset + gtt_info.current_memory;
667 }
668 if (dinfo->hwcursor) {
669 dinfo->cursor.offset = offset +
670 + gtt_info.current_memory + (dinfo->ring.size >> 12);
671 }
672 if (dinfo->fbmem_gart) {
673 dinfo->fb.offset = offset +
674 + gtt_info.current_memory + (dinfo->ring.size >> 12)
675 + (dinfo->cursor.size >> 12);
676 }
677
678 /* Allocate memories (which aren't stolen) */
679 /* Map the fb and MMIO regions */
680 /* ioremap only up to the end of used aperture */
681 dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
682 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
683 + dinfo->fb.size);
684 if (!dinfo->aperture.virtual) {
685 ERR_MSG("Cannot remap FB region.\n");
686 cleanup(dinfo);
687 return -ENODEV;
688 }
689
690 dinfo->mmio_base =
691 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
692 INTEL_REG_SIZE);
693 if (!dinfo->mmio_base) {
694 ERR_MSG("Cannot remap MMIO region.\n");
695 cleanup(dinfo);
696 return -ENODEV;
697 }
698
699 if (dinfo->accel) {
700 if (!(dinfo->gtt_ring_mem =
701 agp_allocate_memory(bridge, dinfo->ring.size >> 12,
702 AGP_NORMAL_MEMORY))) {
703 ERR_MSG("cannot allocate ring buffer memory\n");
704 agp_backend_release(bridge);
705 cleanup(dinfo);
706 return -ENOMEM;
707 }
708 if (agp_bind_memory(dinfo->gtt_ring_mem,
709 dinfo->ring.offset)) {
710 ERR_MSG("cannot bind ring buffer memory\n");
711 agp_backend_release(bridge);
712 cleanup(dinfo);
713 return -EBUSY;
714 }
715 dinfo->ring.physical = dinfo->aperture.physical
716 + (dinfo->ring.offset << 12);
717 dinfo->ring.virtual = dinfo->aperture.virtual
718 + (dinfo->ring.offset << 12);
719 dinfo->ring_head = 0;
720 }
721 if (dinfo->hwcursor) {
722 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
723 : AGP_NORMAL_MEMORY;
724 if (!(dinfo->gtt_cursor_mem =
725 agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
726 agp_memtype))) {
727 ERR_MSG("cannot allocate cursor memory\n");
728 agp_backend_release(bridge);
729 cleanup(dinfo);
730 return -ENOMEM;
731 }
732 if (agp_bind_memory(dinfo->gtt_cursor_mem,
733 dinfo->cursor.offset)) {
734 ERR_MSG("cannot bind cursor memory\n");
735 agp_backend_release(bridge);
736 cleanup(dinfo);
737 return -EBUSY;
738 }
739 if (dinfo->mobile)
740 dinfo->cursor.physical
741 = dinfo->gtt_cursor_mem->physical;
742 else
743 dinfo->cursor.physical = dinfo->aperture.physical
744 + (dinfo->cursor.offset << 12);
745 dinfo->cursor.virtual = dinfo->aperture.virtual
746 + (dinfo->cursor.offset << 12);
747 }
748 if (dinfo->fbmem_gart) {
749 if (!(dinfo->gtt_fb_mem =
750 agp_allocate_memory(bridge, dinfo->fb.size >> 12,
751 AGP_NORMAL_MEMORY))) {
752 WRN_MSG("cannot allocate framebuffer memory - use "
753 "the stolen one\n");
754 dinfo->fbmem_gart = 0;
755 }
756 if (agp_bind_memory(dinfo->gtt_fb_mem,
757 dinfo->fb.offset)) {
758 WRN_MSG("cannot bind framebuffer memory - use "
759 "the stolen one\n");
760 dinfo->fbmem_gart = 0;
761 }
762 }
763
764 /* update framebuffer memory parameters */
765 if (!dinfo->fbmem_gart)
766 dinfo->fb.offset = 0; /* starts at offset 0 */
767 dinfo->fb.physical = dinfo->aperture.physical
768 + (dinfo->fb.offset << 12);
769 dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
770 dinfo->fb_start = dinfo->fb.offset << 12;
771
772 /* release agpgart */
773 agp_backend_release(bridge);
774
775 if (mtrr)
776 set_mtrr(dinfo);
777
778 DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
779 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
780 dinfo->fb.virtual);
781 DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
782 dinfo->mmio_base_phys, INTEL_REG_SIZE,
783 dinfo->mmio_base);
784 DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
785 dinfo->ring.physical, dinfo->ring.size,
786 dinfo->ring.virtual);
787 DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
788 dinfo->cursor.physical, dinfo->cursor.size,
789 dinfo->cursor.virtual, dinfo->cursor.offset,
790 dinfo->cursor.physical);
791
792 DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
793 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
794 DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
795
796 if (probeonly)
797 bailout(dinfo);
798
799 /*
800 * Check if the LVDS port or any DVO ports are enabled. If so,
801 * don't allow mode switching
802 */
803 dvo = intelfbhw_check_non_crt(dinfo);
804 if (dvo) {
805 dinfo->fixed_mode = 1;
806 WRN_MSG("Non-CRT device is enabled ( ");
807 i = 0;
808 while (dvo) {
809 if (dvo & 1) {
810 s = intelfbhw_dvo_to_string(1 << i);
811 if (s)
812 printk("%s ", s);
813 }
814 dvo >>= 1;
815 ++i;
816 }
817 printk("). Disabling mode switching.\n");
818 }
819
820 if (bailearly == 1)
821 bailout(dinfo);
822
823 if (FIXED_MODE(dinfo) && ORIG_VIDEO_ISVGA != VIDEO_TYPE_VLFB) {
824 ERR_MSG("Video mode must be programmed at boot time.\n");
825 cleanup(dinfo);
826 return -ENODEV;
827 }
828
829 if (bailearly == 2)
830 bailout(dinfo);
831
832 /* Initialise dinfo and related data. */
833 /* If an initial mode was programmed at boot time, get its details. */
834 if (ORIG_VIDEO_ISVGA == VIDEO_TYPE_VLFB)
835 get_initial_mode(dinfo);
836
837 if (bailearly == 3)
838 bailout(dinfo);
839
840 if (FIXED_MODE(dinfo)) {
841 /* remap fb address */
842 update_dinfo(dinfo, &dinfo->initial_var);
843 }
844
845 if (bailearly == 4)
846 bailout(dinfo);
847
848
849 if (intelfb_set_fbinfo(dinfo)) {
850 cleanup(dinfo);
851 return -ENODEV;
852 }
853
854 if (bailearly == 5)
855 bailout(dinfo);
856
857 #ifdef CONFIG_FB_INTEL_I2C
858 /* register I2C bus */
859 intelfb_create_i2c_busses(dinfo);
860 #endif
861
862 if (bailearly == 6)
863 bailout(dinfo);
864
865 pci_set_drvdata(pdev, dinfo);
866
867 /* Save the initial register state. */
868 i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
869 bailearly > 6 ? bailearly - 6 : 0);
870 if (i != 0) {
871 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
872 bailout(dinfo);
873 }
874
875 intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
876
877 if (bailearly == 18)
878 bailout(dinfo);
879
880 /* Cursor initialisation */
881 if (dinfo->hwcursor) {
882 intelfbhw_cursor_init(dinfo);
883 intelfbhw_cursor_reset(dinfo);
884 }
885
886 if (bailearly == 19)
887 bailout(dinfo);
888
889 /* 2d acceleration init */
890 if (dinfo->accel)
891 intelfbhw_2d_start(dinfo);
892
893 if (bailearly == 20)
894 bailout(dinfo);
895
896 if (noregister)
897 bailout(dinfo);
898
899 if (register_framebuffer(dinfo->info) < 0) {
900 ERR_MSG("Cannot register framebuffer.\n");
901 cleanup(dinfo);
902 return -ENODEV;
903 }
904
905 dinfo->registered = 1;
906 dinfo->open = 0;
907
908 init_waitqueue_head(&dinfo->vsync.wait);
909 spin_lock_init(&dinfo->int_lock);
910 dinfo->irq_flags = 0;
911 dinfo->vsync.pan_display = 0;
912 dinfo->vsync.pan_offset = 0;
913
914 return 0;
915
916 err_out_pixmap:
917 fb_dealloc_cmap(&info->cmap);
918 err_out_cmap:
919 framebuffer_release(info);
920 return -ENODEV;
921 }
922
923 static void __devexit
924 intelfb_pci_unregister(struct pci_dev *pdev)
925 {
926 struct intelfb_info *dinfo = pci_get_drvdata(pdev);
927
928 DBG_MSG("intelfb_pci_unregister\n");
929
930 if (!dinfo)
931 return;
932
933 cleanup(dinfo);
934
935 pci_set_drvdata(pdev, NULL);
936 }
937
938 /***************************************************************
939 * helper functions *
940 ***************************************************************/
941
942 int __inline__
943 intelfb_var_to_depth(const struct fb_var_screeninfo *var)
944 {
945 DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
946 var->bits_per_pixel, var->green.length);
947
948 switch (var->bits_per_pixel) {
949 case 16:
950 return (var->green.length == 6) ? 16 : 15;
951 case 32:
952 return 24;
953 default:
954 return var->bits_per_pixel;
955 }
956 }
957
958
959 static __inline__ int
960 var_to_refresh(const struct fb_var_screeninfo *var)
961 {
962 int xtot = var->xres + var->left_margin + var->right_margin +
963 var->hsync_len;
964 int ytot = var->yres + var->upper_margin + var->lower_margin +
965 var->vsync_len;
966
967 return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
968 }
969
970 /***************************************************************
971 * Various intialisation functions *
972 ***************************************************************/
973
974 static void __devinit
975 get_initial_mode(struct intelfb_info *dinfo)
976 {
977 struct fb_var_screeninfo *var;
978 int xtot, ytot;
979
980 DBG_MSG("get_initial_mode\n");
981
982 dinfo->initial_vga = 1;
983 dinfo->initial_fb_base = screen_info.lfb_base;
984 dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
985 dinfo->initial_pitch = screen_info.lfb_linelength;
986
987 var = &dinfo->initial_var;
988 memset(var, 0, sizeof(*var));
989 var->xres = screen_info.lfb_width;
990 var->yres = screen_info.lfb_height;
991 var->bits_per_pixel = screen_info.lfb_depth;
992 switch (screen_info.lfb_depth) {
993 case 15:
994 var->bits_per_pixel = 16;
995 break;
996 case 24:
997 var->bits_per_pixel = 32;
998 break;
999 }
1000
1001 DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
1002 dinfo->initial_fb_base, dinfo->initial_video_ram,
1003 BtoKB(dinfo->initial_video_ram));
1004
1005 DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
1006 var->xres, var->yres, var->bits_per_pixel,
1007 dinfo->initial_pitch);
1008
1009 /* Dummy timing values (assume 60Hz) */
1010 var->left_margin = (var->xres / 8) & 0xf8;
1011 var->right_margin = 32;
1012 var->upper_margin = 16;
1013 var->lower_margin = 4;
1014 var->hsync_len = (var->xres / 8) & 0xf8;
1015 var->vsync_len = 4;
1016
1017 xtot = var->xres + var->left_margin +
1018 var->right_margin + var->hsync_len;
1019 ytot = var->yres + var->upper_margin +
1020 var->lower_margin + var->vsync_len;
1021 var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1022
1023 var->height = -1;
1024 var->width = -1;
1025
1026 if (var->bits_per_pixel > 8) {
1027 var->red.offset = screen_info.red_pos;
1028 var->red.length = screen_info.red_size;
1029 var->green.offset = screen_info.green_pos;
1030 var->green.length = screen_info.green_size;
1031 var->blue.offset = screen_info.blue_pos;
1032 var->blue.length = screen_info.blue_size;
1033 var->transp.offset = screen_info.rsvd_pos;
1034 var->transp.length = screen_info.rsvd_size;
1035 } else {
1036 var->red.length = 8;
1037 var->green.length = 8;
1038 var->blue.length = 8;
1039 }
1040 }
1041
1042 static int __devinit
1043 intelfb_init_var(struct intelfb_info *dinfo)
1044 {
1045 struct fb_var_screeninfo *var;
1046 int msrc = 0;
1047
1048 DBG_MSG("intelfb_init_var\n");
1049
1050 var = &dinfo->info->var;
1051 if (FIXED_MODE(dinfo)) {
1052 memcpy(var, &dinfo->initial_var,
1053 sizeof(struct fb_var_screeninfo));
1054 msrc = 5;
1055 } else {
1056 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1057 u8 *edid_d = NULL;
1058
1059 if (edid_s) {
1060 edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1061
1062 if (edid_d) {
1063 fb_edid_to_monspecs(edid_d,
1064 &dinfo->info->monspecs);
1065 kfree(edid_d);
1066 }
1067 }
1068
1069 if (mode) {
1070 printk("intelfb: Looking for mode in private "
1071 "database\n");
1072 msrc = fb_find_mode(var, dinfo->info, mode,
1073 dinfo->info->monspecs.modedb,
1074 dinfo->info->monspecs.modedb_len,
1075 NULL, 0);
1076
1077 if (msrc && msrc > 1) {
1078 printk("intelfb: No mode in private database, "
1079 "intelfb: looking for mode in global "
1080 "database ");
1081 msrc = fb_find_mode(var, dinfo->info, mode,
1082 NULL, 0, NULL, 0);
1083
1084 if (msrc)
1085 msrc |= 8;
1086 }
1087
1088 }
1089
1090 if (!msrc) {
1091 msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1092 NULL, 0, NULL, 0);
1093 }
1094 }
1095
1096 if (!msrc) {
1097 ERR_MSG("Cannot find a suitable video mode.\n");
1098 return 1;
1099 }
1100
1101 INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1102 var->bits_per_pixel, var_to_refresh(var));
1103
1104 DBG_MSG("Initial video mode is from %d.\n", msrc);
1105
1106 #if ALLOCATE_FOR_PANNING
1107 /* Allow use of half of the video ram for panning */
1108 var->xres_virtual = var->xres;
1109 var->yres_virtual =
1110 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1111 if (var->yres_virtual < var->yres)
1112 var->yres_virtual = var->yres;
1113 #else
1114 var->yres_virtual = var->yres;
1115 #endif
1116
1117 if (dinfo->accel)
1118 var->accel_flags |= FB_ACCELF_TEXT;
1119 else
1120 var->accel_flags &= ~FB_ACCELF_TEXT;
1121
1122 return 0;
1123 }
1124
1125 static int __devinit
1126 intelfb_set_fbinfo(struct intelfb_info *dinfo)
1127 {
1128 struct fb_info *info = dinfo->info;
1129
1130 DBG_MSG("intelfb_set_fbinfo\n");
1131
1132 info->flags = FBINFO_FLAG_DEFAULT;
1133 info->fbops = &intel_fb_ops;
1134 info->pseudo_palette = dinfo->pseudo_palette;
1135
1136 info->pixmap.size = 64*1024;
1137 info->pixmap.buf_align = 8;
1138 info->pixmap.access_align = 32;
1139 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1140
1141 if (intelfb_init_var(dinfo))
1142 return 1;
1143
1144 info->pixmap.scan_align = 1;
1145 strcpy(info->fix.id, dinfo->name);
1146 info->fix.smem_start = dinfo->fb.physical;
1147 info->fix.smem_len = dinfo->fb.size;
1148 info->fix.type = FB_TYPE_PACKED_PIXELS;
1149 info->fix.type_aux = 0;
1150 info->fix.xpanstep = 8;
1151 info->fix.ypanstep = 1;
1152 info->fix.ywrapstep = 0;
1153 info->fix.mmio_start = dinfo->mmio_base_phys;
1154 info->fix.mmio_len = INTEL_REG_SIZE;
1155 info->fix.accel = FB_ACCEL_I830;
1156 update_dinfo(dinfo, &info->var);
1157
1158 return 0;
1159 }
1160
1161 /* Update dinfo to match the active video mode. */
1162 static void
1163 update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var)
1164 {
1165 DBG_MSG("update_dinfo\n");
1166
1167 dinfo->bpp = var->bits_per_pixel;
1168 dinfo->depth = intelfb_var_to_depth(var);
1169 dinfo->xres = var->xres;
1170 dinfo->yres = var->xres;
1171 dinfo->pixclock = var->pixclock;
1172
1173 dinfo->info->fix.visual = dinfo->visual;
1174 dinfo->info->fix.line_length = dinfo->pitch;
1175
1176 switch (dinfo->bpp) {
1177 case 8:
1178 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1179 dinfo->pitch = var->xres_virtual;
1180 break;
1181 case 16:
1182 dinfo->visual = FB_VISUAL_TRUECOLOR;
1183 dinfo->pitch = var->xres_virtual * 2;
1184 break;
1185 case 32:
1186 dinfo->visual = FB_VISUAL_TRUECOLOR;
1187 dinfo->pitch = var->xres_virtual * 4;
1188 break;
1189 }
1190
1191 /* Make sure the line length is a aligned correctly. */
1192 if (IS_I9XX(dinfo))
1193 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1194 else
1195 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1196
1197 if (FIXED_MODE(dinfo))
1198 dinfo->pitch = dinfo->initial_pitch;
1199
1200 dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1201 dinfo->info->fix.line_length = dinfo->pitch;
1202 dinfo->info->fix.visual = dinfo->visual;
1203 }
1204
1205 /* fbops functions */
1206
1207 /***************************************************************
1208 * fbdev interface *
1209 ***************************************************************/
1210
1211 static int
1212 intelfb_open(struct fb_info *info, int user)
1213 {
1214 struct intelfb_info *dinfo = GET_DINFO(info);
1215
1216 if (user) {
1217 dinfo->open++;
1218 }
1219
1220 return 0;
1221 }
1222
1223 static int
1224 intelfb_release(struct fb_info *info, int user)
1225 {
1226 struct intelfb_info *dinfo = GET_DINFO(info);
1227
1228 if (user) {
1229 dinfo->open--;
1230 msleep(1);
1231 if (!dinfo->open) {
1232 intelfbhw_disable_irq(dinfo);
1233 }
1234 }
1235
1236 return 0;
1237 }
1238
1239 static int
1240 intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1241 {
1242 int change_var = 0;
1243 struct fb_var_screeninfo v;
1244 struct intelfb_info *dinfo;
1245 static int first = 1;
1246 int i;
1247 /* Good pitches to allow tiling. Don't care about pitches < 1024. */
1248 static const int pitches[] = {
1249 128 * 8,
1250 128 * 16,
1251 128 * 32,
1252 128 * 64,
1253 0
1254 };
1255
1256 DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1257
1258 dinfo = GET_DINFO(info);
1259
1260 /* update the pitch */
1261 if (intelfbhw_validate_mode(dinfo, var) != 0)
1262 return -EINVAL;
1263
1264 v = *var;
1265
1266 for (i = 0; pitches[i] != 0; i++) {
1267 if (pitches[i] >= v.xres_virtual) {
1268 v.xres_virtual = pitches[i];
1269 break;
1270 }
1271 }
1272
1273 /* Check for a supported bpp. */
1274 if (v.bits_per_pixel <= 8) {
1275 v.bits_per_pixel = 8;
1276 } else if (v.bits_per_pixel <= 16) {
1277 if (v.bits_per_pixel == 16)
1278 v.green.length = 6;
1279 v.bits_per_pixel = 16;
1280 } else if (v.bits_per_pixel <= 32) {
1281 v.bits_per_pixel = 32;
1282 } else
1283 return -EINVAL;
1284
1285 change_var = ((info->var.xres != var->xres) ||
1286 (info->var.yres != var->yres) ||
1287 (info->var.xres_virtual != var->xres_virtual) ||
1288 (info->var.yres_virtual != var->yres_virtual) ||
1289 (info->var.bits_per_pixel != var->bits_per_pixel) ||
1290 memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1291 memcmp(&info->var.green, &var->green,
1292 sizeof(var->green)) ||
1293 memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1294
1295 if (FIXED_MODE(dinfo) &&
1296 (change_var ||
1297 var->yres_virtual > dinfo->initial_var.yres_virtual ||
1298 var->yres_virtual < dinfo->initial_var.yres ||
1299 var->xoffset || var->nonstd)) {
1300 if (first) {
1301 ERR_MSG("Changing the video mode is not supported.\n");
1302 first = 0;
1303 }
1304 return -EINVAL;
1305 }
1306
1307 switch (intelfb_var_to_depth(&v)) {
1308 case 8:
1309 v.red.offset = v.green.offset = v.blue.offset = 0;
1310 v.red.length = v.green.length = v.blue.length = 8;
1311 v.transp.offset = v.transp.length = 0;
1312 break;
1313 case 15:
1314 v.red.offset = 10;
1315 v.green.offset = 5;
1316 v.blue.offset = 0;
1317 v.red.length = v.green.length = v.blue.length = 5;
1318 v.transp.offset = v.transp.length = 0;
1319 break;
1320 case 16:
1321 v.red.offset = 11;
1322 v.green.offset = 5;
1323 v.blue.offset = 0;
1324 v.red.length = 5;
1325 v.green.length = 6;
1326 v.blue.length = 5;
1327 v.transp.offset = v.transp.length = 0;
1328 break;
1329 case 24:
1330 v.red.offset = 16;
1331 v.green.offset = 8;
1332 v.blue.offset = 0;
1333 v.red.length = v.green.length = v.blue.length = 8;
1334 v.transp.offset = v.transp.length = 0;
1335 break;
1336 case 32:
1337 v.red.offset = 16;
1338 v.green.offset = 8;
1339 v.blue.offset = 0;
1340 v.red.length = v.green.length = v.blue.length = 8;
1341 v.transp.offset = 24;
1342 v.transp.length = 8;
1343 break;
1344 }
1345
1346 if (v.xoffset < 0)
1347 v.xoffset = 0;
1348 if (v.yoffset < 0)
1349 v.yoffset = 0;
1350
1351 if (v.xoffset > v.xres_virtual - v.xres)
1352 v.xoffset = v.xres_virtual - v.xres;
1353 if (v.yoffset > v.yres_virtual - v.yres)
1354 v.yoffset = v.yres_virtual - v.yres;
1355
1356 v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1357 v.transp.msb_right = 0;
1358
1359 *var = v;
1360
1361 return 0;
1362 }
1363
1364 static int
1365 intelfb_set_par(struct fb_info *info)
1366 {
1367 struct intelfb_hwstate *hw;
1368 struct intelfb_info *dinfo = GET_DINFO(info);
1369
1370 if (FIXED_MODE(dinfo)) {
1371 ERR_MSG("Changing the video mode is not supported.\n");
1372 return -EINVAL;
1373 }
1374
1375 hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1376 if (!hw)
1377 return -ENOMEM;
1378
1379 DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1380 info->var.yres, info->var.bits_per_pixel);
1381
1382 intelfb_blank(FB_BLANK_POWERDOWN, info);
1383
1384 if (ACCEL(dinfo, info))
1385 intelfbhw_2d_stop(dinfo);
1386
1387 memcpy(hw, &dinfo->save_state, sizeof(*hw));
1388 if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1389 goto invalid_mode;
1390 if (intelfbhw_program_mode(dinfo, hw, 0))
1391 goto invalid_mode;
1392
1393 #if REGDUMP > 0
1394 intelfbhw_read_hw_state(dinfo, hw, 0);
1395 intelfbhw_print_hw_state(dinfo, hw);
1396 #endif
1397
1398 update_dinfo(dinfo, &info->var);
1399
1400 if (ACCEL(dinfo, info))
1401 intelfbhw_2d_start(dinfo);
1402
1403 intelfb_pan_display(&info->var, info);
1404
1405 intelfb_blank(FB_BLANK_UNBLANK, info);
1406
1407 if (ACCEL(dinfo, info)) {
1408 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1409 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1410 FBINFO_HWACCEL_IMAGEBLIT;
1411 } else {
1412 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1413 }
1414 kfree(hw);
1415 return 0;
1416 invalid_mode:
1417 kfree(hw);
1418 return -EINVAL;
1419 }
1420
1421 static int
1422 intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1423 unsigned blue, unsigned transp, struct fb_info *info)
1424 {
1425 struct intelfb_info *dinfo = GET_DINFO(info);
1426
1427 #if VERBOSE > 0
1428 DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1429 #endif
1430
1431 if (regno > 255)
1432 return 1;
1433
1434 if (dinfo->depth == 8) {
1435 red >>= 8;
1436 green >>= 8;
1437 blue >>= 8;
1438
1439 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1440 transp);
1441 }
1442
1443 if (regno < 16) {
1444 switch (dinfo->depth) {
1445 case 15:
1446 dinfo->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
1447 ((green & 0xf800) >> 6) |
1448 ((blue & 0xf800) >> 11);
1449 break;
1450 case 16:
1451 dinfo->pseudo_palette[regno] = (red & 0xf800) |
1452 ((green & 0xfc00) >> 5) |
1453 ((blue & 0xf800) >> 11);
1454 break;
1455 case 24:
1456 dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1457 (green & 0xff00) |
1458 ((blue & 0xff00) >> 8);
1459 break;
1460 }
1461 }
1462
1463 return 0;
1464 }
1465
1466 static int
1467 intelfb_blank(int blank, struct fb_info *info)
1468 {
1469 intelfbhw_do_blank(blank, info);
1470 return 0;
1471 }
1472
1473 static int
1474 intelfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1475 {
1476 intelfbhw_pan_display(var, info);
1477 return 0;
1478 }
1479
1480 /* When/if we have our own ioctls. */
1481 static int
1482 intelfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
1483 {
1484 int retval = 0;
1485 struct intelfb_info *dinfo = GET_DINFO(info);
1486 u32 pipe = 0;
1487
1488 switch (cmd) {
1489 case FBIO_WAITFORVSYNC:
1490 if (get_user(pipe, (__u32 __user *)arg))
1491 return -EFAULT;
1492
1493 retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1494 break;
1495 default:
1496 break;
1497 }
1498
1499 return retval;
1500 }
1501
1502 static void
1503 intelfb_fillrect (struct fb_info *info, const struct fb_fillrect *rect)
1504 {
1505 struct intelfb_info *dinfo = GET_DINFO(info);
1506 u32 rop, color;
1507
1508 #if VERBOSE > 0
1509 DBG_MSG("intelfb_fillrect\n");
1510 #endif
1511
1512 if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1513 return cfb_fillrect(info, rect);
1514
1515 if (rect->rop == ROP_COPY)
1516 rop = PAT_ROP_GXCOPY;
1517 else // ROP_XOR
1518 rop = PAT_ROP_GXXOR;
1519
1520 if (dinfo->depth != 8)
1521 color = dinfo->pseudo_palette[rect->color];
1522 else
1523 color = rect->color;
1524
1525 intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1526 rect->width, rect->height, color,
1527 dinfo->pitch, info->var.bits_per_pixel,
1528 rop);
1529 }
1530
1531 static void
1532 intelfb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
1533 {
1534 struct intelfb_info *dinfo = GET_DINFO(info);
1535
1536 #if VERBOSE > 0
1537 DBG_MSG("intelfb_copyarea\n");
1538 #endif
1539
1540 if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1541 return cfb_copyarea(info, region);
1542
1543 intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1544 region->dy, region->width, region->height,
1545 dinfo->pitch, info->var.bits_per_pixel);
1546 }
1547
1548 static void
1549 intelfb_imageblit(struct fb_info *info, const struct fb_image *image)
1550 {
1551 struct intelfb_info *dinfo = GET_DINFO(info);
1552 u32 fgcolor, bgcolor;
1553
1554 #if VERBOSE > 0
1555 DBG_MSG("intelfb_imageblit\n");
1556 #endif
1557
1558 if (!ACCEL(dinfo, info) || dinfo->depth == 4
1559 || image->depth != 1)
1560 return cfb_imageblit(info, image);
1561
1562 if (dinfo->depth != 8) {
1563 fgcolor = dinfo->pseudo_palette[image->fg_color];
1564 bgcolor = dinfo->pseudo_palette[image->bg_color];
1565 } else {
1566 fgcolor = image->fg_color;
1567 bgcolor = image->bg_color;
1568 }
1569
1570 if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1571 image->height, image->data,
1572 image->dx, image->dy,
1573 dinfo->pitch, info->var.bits_per_pixel))
1574 return cfb_imageblit(info, image);
1575 }
1576
1577 static int
1578 intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1579 {
1580 struct intelfb_info *dinfo = GET_DINFO(info);
1581 u32 physical;
1582 #if VERBOSE > 0
1583 DBG_MSG("intelfb_cursor\n");
1584 #endif
1585
1586 if (!dinfo->hwcursor)
1587 return -ENODEV;
1588
1589 intelfbhw_cursor_hide(dinfo);
1590
1591 /* If XFree killed the cursor - restore it */
1592 physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1593 (dinfo->cursor.offset << 12);
1594
1595 if (INREG(CURSOR_A_BASEADDR) != physical) {
1596 u32 fg, bg;
1597
1598 DBG_MSG("the cursor was killed - restore it !!\n");
1599 DBG_MSG("size %d, %d pos %d, %d\n",
1600 cursor->image.width, cursor->image.height,
1601 cursor->image.dx, cursor->image.dy);
1602
1603 intelfbhw_cursor_init(dinfo);
1604 intelfbhw_cursor_reset(dinfo);
1605 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1606 cursor->image.dy);
1607
1608 if (dinfo->depth != 8) {
1609 fg =dinfo->pseudo_palette[cursor->image.fg_color];
1610 bg =dinfo->pseudo_palette[cursor->image.bg_color];
1611 } else {
1612 fg = cursor->image.fg_color;
1613 bg = cursor->image.bg_color;
1614 }
1615 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1616 intelfbhw_cursor_load(dinfo, cursor->image.width,
1617 cursor->image.height,
1618 dinfo->cursor_src);
1619
1620 if (cursor->enable)
1621 intelfbhw_cursor_show(dinfo);
1622 return 0;
1623 }
1624
1625 if (cursor->set & FB_CUR_SETPOS) {
1626 u32 dx, dy;
1627
1628 dx = cursor->image.dx - info->var.xoffset;
1629 dy = cursor->image.dy - info->var.yoffset;
1630
1631 intelfbhw_cursor_setpos(dinfo, dx, dy);
1632 }
1633
1634 if (cursor->set & FB_CUR_SETSIZE) {
1635 if (cursor->image.width > 64 || cursor->image.height > 64)
1636 return -ENXIO;
1637
1638 intelfbhw_cursor_reset(dinfo);
1639 }
1640
1641 if (cursor->set & FB_CUR_SETCMAP) {
1642 u32 fg, bg;
1643
1644 if (dinfo->depth != 8) {
1645 fg = dinfo->pseudo_palette[cursor->image.fg_color];
1646 bg = dinfo->pseudo_palette[cursor->image.bg_color];
1647 } else {
1648 fg = cursor->image.fg_color;
1649 bg = cursor->image.bg_color;
1650 }
1651
1652 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1653 }
1654
1655 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1656 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1657 u32 size = s_pitch * cursor->image.height;
1658 u8 *dat = (u8 *) cursor->image.data;
1659 u8 *msk = (u8 *) cursor->mask;
1660 u8 src[64];
1661 u32 i;
1662
1663 if (cursor->image.depth != 1)
1664 return -ENXIO;
1665
1666 switch (cursor->rop) {
1667 case ROP_XOR:
1668 for (i = 0; i < size; i++)
1669 src[i] = dat[i] ^ msk[i];
1670 break;
1671 case ROP_COPY:
1672 default:
1673 for (i = 0; i < size; i++)
1674 src[i] = dat[i] & msk[i];
1675 break;
1676 }
1677
1678 /* save the bitmap to restore it when XFree will
1679 make the cursor dirty */
1680 memcpy(dinfo->cursor_src, src, size);
1681
1682 intelfbhw_cursor_load(dinfo, cursor->image.width,
1683 cursor->image.height, src);
1684 }
1685
1686 if (cursor->enable)
1687 intelfbhw_cursor_show(dinfo);
1688
1689 return 0;
1690 }
1691
1692 static int
1693 intelfb_sync(struct fb_info *info)
1694 {
1695 struct intelfb_info *dinfo = GET_DINFO(info);
1696
1697 #if VERBOSE > 0
1698 DBG_MSG("intelfb_sync\n");
1699 #endif
1700
1701 if (dinfo->ring_lockup)
1702 return 0;
1703
1704 intelfbhw_do_sync(dinfo);
1705 return 0;
1706 }
1707
Tomato firmware and modifications.