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Merge tag 'stable/for-linus-3.8-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / video / intelfb / intelfbdrv.c
1 /*
2 * intelfb
3 *
4 * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM/
5 * 945G/945GM/945GME/965G/965GM integrated graphics chips.
6 *
7 * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org>
8 * 2004 Sylvain Meyer
9 * 2006 David Airlie
10 *
11 * This driver consists of two parts. The first part (intelfbdrv.c) provides
12 * the basic fbdev interfaces, is derived in part from the radeonfb and
13 * vesafb drivers, and is covered by the GPL. The second part (intelfbhw.c)
14 * provides the code to program the hardware. Most of it is derived from
15 * the i810/i830 XFree86 driver. The HW-specific code is covered here
16 * under a dual license (GPL and MIT/XFree86 license).
17 *
18 * Author: David Dawes
19 *
20 */
21
22 /* $DHD: intelfb/intelfbdrv.c,v 1.20 2003/06/27 15:17:40 dawes Exp $ */
23
24 /*
25 * Changes:
26 * 01/2003 - Initial driver (0.1.0), no mode switching, no acceleration.
27 * This initial version is a basic core that works a lot like
28 * the vesafb driver. It must be built-in to the kernel,
29 * and the initial video mode must be set with vga=XXX at
30 * boot time. (David Dawes)
31 *
32 * 01/2003 - Version 0.2.0: Mode switching added, colormap support
33 * implemented, Y panning, and soft screen blanking implemented.
34 * No acceleration yet. (David Dawes)
35 *
36 * 01/2003 - Version 0.3.0: fbcon acceleration support added. Module
37 * option handling added. (David Dawes)
38 *
39 * 01/2003 - Version 0.4.0: fbcon HW cursor support added. (David Dawes)
40 *
41 * 01/2003 - Version 0.4.1: Add auto-generation of built-in modes.
42 * (David Dawes)
43 *
44 * 02/2003 - Version 0.4.2: Add check for active non-CRT devices, and
45 * mode validation checks. (David Dawes)
46 *
47 * 02/2003 - Version 0.4.3: Check when the VC is in graphics mode so that
48 * acceleration is disabled while an XFree86 server is running.
49 * (David Dawes)
50 *
51 * 02/2003 - Version 0.4.4: Monitor DPMS support. (David Dawes)
52 *
53 * 02/2003 - Version 0.4.5: Basic XFree86 + fbdev working. (David Dawes)
54 *
55 * 02/2003 - Version 0.5.0: Modify to work with the 2.5.32 kernel as well
56 * as 2.4.x kernels. (David Dawes)
57 *
58 * 02/2003 - Version 0.6.0: Split out HW-specifics into a separate file.
59 * (David Dawes)
60 *
61 * 02/2003 - Version 0.7.0: Test on 852GM/855GM. Acceleration and HW
62 * cursor are disabled on this platform. (David Dawes)
63 *
64 * 02/2003 - Version 0.7.1: Test on 845G. Acceleration is disabled
65 * on this platform. (David Dawes)
66 *
67 * 02/2003 - Version 0.7.2: Test on 830M. Acceleration and HW
68 * cursor are disabled on this platform. (David Dawes)
69 *
70 * 02/2003 - Version 0.7.3: Fix 8-bit modes for mobile platforms
71 * (David Dawes)
72 *
73 * 02/2003 - Version 0.7.4: Add checks for FB and FBCON_HAS_CFB* configured
74 * in the kernel, and add mode bpp verification and default
75 * bpp selection based on which FBCON_HAS_CFB* are configured.
76 * (David Dawes)
77 *
78 * 02/2003 - Version 0.7.5: Add basic package/install scripts based on the
79 * DRI packaging scripts. (David Dawes)
80 *
81 * 04/2003 - Version 0.7.6: Fix typo that affects builds with SMP-enabled
82 * kernels. (David Dawes, reported by Anupam).
83 *
84 * 06/2003 - Version 0.7.7:
85 * Fix Makefile.kernel build problem (Tsutomu Yasuda).
86 * Fix mis-placed #endif (2.4.21 kernel).
87 *
88 * 09/2004 - Version 0.9.0 - by Sylvain Meyer
89 * Port to linux 2.6 kernel fbdev
90 * Fix HW accel and HW cursor on i845G
91 * Use of agpgart for fb memory reservation
92 * Add mtrr support
93 *
94 * 10/2004 - Version 0.9.1
95 * Use module_param instead of old MODULE_PARM
96 * Some cleanup
97 *
98 * 11/2004 - Version 0.9.2
99 * Add vram option to reserve more memory than stolen by BIOS
100 * Fix intelfbhw_pan_display typo
101 * Add __initdata annotations
102 *
103 * 04/2008 - Version 0.9.5
104 * Add support for 965G/965GM. (Maik Broemme <mbroemme@plusserver.de>)
105 *
106 * 08/2008 - Version 0.9.6
107 * Add support for 945GME. (Phil Endecott <spam_from_intelfb@chezphil.org>)
108 */
109
110 #include <linux/module.h>
111 #include <linux/kernel.h>
112 #include <linux/errno.h>
113 #include <linux/string.h>
114 #include <linux/mm.h>
115 #include <linux/slab.h>
116 #include <linux/delay.h>
117 #include <linux/fb.h>
118 #include <linux/ioport.h>
119 #include <linux/init.h>
120 #include <linux/pci.h>
121 #include <linux/vmalloc.h>
122 #include <linux/pagemap.h>
123 #include <linux/screen_info.h>
124
125 #include <asm/io.h>
126
127 #ifdef CONFIG_MTRR
128 #include <asm/mtrr.h>
129 #endif
130
131 #include "intelfb.h"
132 #include "intelfbhw.h"
133 #include "../edid.h"
134
135 static void get_initial_mode(struct intelfb_info *dinfo);
136 static void update_dinfo(struct intelfb_info *dinfo,
137 struct fb_var_screeninfo *var);
138 static int intelfb_open(struct fb_info *info, int user);
139 static int intelfb_release(struct fb_info *info, int user);
140 static int intelfb_check_var(struct fb_var_screeninfo *var,
141 struct fb_info *info);
142 static int intelfb_set_par(struct fb_info *info);
143 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
144 unsigned blue, unsigned transp,
145 struct fb_info *info);
146
147 static int intelfb_blank(int blank, struct fb_info *info);
148 static int intelfb_pan_display(struct fb_var_screeninfo *var,
149 struct fb_info *info);
150
151 static void intelfb_fillrect(struct fb_info *info,
152 const struct fb_fillrect *rect);
153 static void intelfb_copyarea(struct fb_info *info,
154 const struct fb_copyarea *region);
155 static void intelfb_imageblit(struct fb_info *info,
156 const struct fb_image *image);
157 static int intelfb_cursor(struct fb_info *info,
158 struct fb_cursor *cursor);
159
160 static int intelfb_sync(struct fb_info *info);
161
162 static int intelfb_ioctl(struct fb_info *info,
163 unsigned int cmd, unsigned long arg);
164
165 static int intelfb_pci_register(struct pci_dev *pdev,
166 const struct pci_device_id *ent);
167 static void intelfb_pci_unregister(struct pci_dev *pdev);
168 static int intelfb_set_fbinfo(struct intelfb_info *dinfo);
169
170 /*
171 * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
172 * mobile chipsets from being registered.
173 */
174 #if DETECT_VGA_CLASS_ONLY
175 #define INTELFB_CLASS_MASK ~0 << 8
176 #else
177 #define INTELFB_CLASS_MASK 0
178 #endif
179
180 static struct pci_device_id intelfb_pci_table[] = {
181 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_830M, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_830M },
182 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_845G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_845G },
183 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_85XGM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_85XGM },
184 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_865G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_865G },
185 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_854, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_854 },
186 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915G },
187 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915GM },
188 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945G },
189 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GM },
190 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GME, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GME },
191 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_965G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965G },
192 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_965GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965GM },
193 { 0, }
194 };
195
196 /* Global data */
197 static int num_registered = 0;
198
199 /* fb ops */
200 static struct fb_ops intel_fb_ops = {
201 .owner = THIS_MODULE,
202 .fb_open = intelfb_open,
203 .fb_release = intelfb_release,
204 .fb_check_var = intelfb_check_var,
205 .fb_set_par = intelfb_set_par,
206 .fb_setcolreg = intelfb_setcolreg,
207 .fb_blank = intelfb_blank,
208 .fb_pan_display = intelfb_pan_display,
209 .fb_fillrect = intelfb_fillrect,
210 .fb_copyarea = intelfb_copyarea,
211 .fb_imageblit = intelfb_imageblit,
212 .fb_cursor = intelfb_cursor,
213 .fb_sync = intelfb_sync,
214 .fb_ioctl = intelfb_ioctl
215 };
216
217 /* PCI driver module table */
218 static struct pci_driver intelfb_driver = {
219 .name = "intelfb",
220 .id_table = intelfb_pci_table,
221 .probe = intelfb_pci_register,
222 .remove = intelfb_pci_unregister,
223 };
224
225 /* Module description/parameters */
226 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
227 "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
228 MODULE_DESCRIPTION("Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS
229 " chipsets");
230 MODULE_LICENSE("Dual BSD/GPL");
231 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
232
233 static bool accel = 1;
234 static int vram = 4;
235 static bool hwcursor = 0;
236 static bool mtrr = 1;
237 static bool fixed = 0;
238 static bool noinit = 0;
239 static bool noregister = 0;
240 static bool probeonly = 0;
241 static bool idonly = 0;
242 static int bailearly = 0;
243 static int voffset = 48;
244 static char *mode = NULL;
245
246 module_param(accel, bool, S_IRUGO);
247 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
248 module_param(vram, int, S_IRUGO);
249 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
250 module_param(voffset, int, S_IRUGO);
251 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
252 module_param(hwcursor, bool, S_IRUGO);
253 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
254 module_param(mtrr, bool, S_IRUGO);
255 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
256 module_param(fixed, bool, S_IRUGO);
257 MODULE_PARM_DESC(fixed, "Disable mode switching");
258 module_param(noinit, bool, 0);
259 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
260 module_param(noregister, bool, 0);
261 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
262 module_param(probeonly, bool, 0);
263 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
264 module_param(idonly, bool, 0);
265 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
266 module_param(bailearly, int, 0);
267 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
268 module_param(mode, charp, S_IRUGO);
269 MODULE_PARM_DESC(mode,
270 "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
271
272 #ifndef MODULE
273 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
274 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
275 #define OPT_STRVAL(opt, name) (opt + strlen(name))
276
277 static __inline__ char * get_opt_string(const char *this_opt, const char *name)
278 {
279 const char *p;
280 int i;
281 char *ret;
282
283 p = OPT_STRVAL(this_opt, name);
284 i = 0;
285 while (p[i] && p[i] != ' ' && p[i] != ',')
286 i++;
287 ret = kmalloc(i + 1, GFP_KERNEL);
288 if (ret) {
289 strncpy(ret, p, i);
290 ret[i] = '\0';
291 }
292 return ret;
293 }
294
295 static __inline__ int get_opt_int(const char *this_opt, const char *name,
296 int *ret)
297 {
298 if (!ret)
299 return 0;
300
301 if (!OPT_EQUAL(this_opt, name))
302 return 0;
303
304 *ret = OPT_INTVAL(this_opt, name);
305 return 1;
306 }
307
308 static __inline__ int get_opt_bool(const char *this_opt, const char *name,
309 int *ret)
310 {
311 if (!ret)
312 return 0;
313
314 if (OPT_EQUAL(this_opt, name)) {
315 if (this_opt[strlen(name)] == '=')
316 *ret = simple_strtoul(this_opt + strlen(name) + 1,
317 NULL, 0);
318 else
319 *ret = 1;
320 } else {
321 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
322 *ret = 0;
323 else
324 return 0;
325 }
326 return 1;
327 }
328
329 static int __init intelfb_setup(char *options)
330 {
331 char *this_opt;
332
333 DBG_MSG("intelfb_setup\n");
334
335 if (!options || !*options) {
336 DBG_MSG("no options\n");
337 return 0;
338 } else
339 DBG_MSG("options: %s\n", options);
340
341 /*
342 * These are the built-in options analogous to the module parameters
343 * defined above.
344 *
345 * The syntax is:
346 *
347 * video=intelfb:[mode][,<param>=<val>] ...
348 *
349 * e.g.,
350 *
351 * video=intelfb:1024x768-16@75,accel=0
352 */
353
354 while ((this_opt = strsep(&options, ","))) {
355 if (!*this_opt)
356 continue;
357 if (get_opt_bool(this_opt, "accel", &accel))
358 ;
359 else if (get_opt_int(this_opt, "vram", &vram))
360 ;
361 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
362 ;
363 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
364 ;
365 else if (get_opt_bool(this_opt, "fixed", &fixed))
366 ;
367 else if (get_opt_bool(this_opt, "init", &noinit))
368 noinit = !noinit;
369 else if (OPT_EQUAL(this_opt, "mode="))
370 mode = get_opt_string(this_opt, "mode=");
371 else
372 mode = this_opt;
373 }
374
375 return 0;
376 }
377
378 #endif
379
380 static int __init intelfb_init(void)
381 {
382 #ifndef MODULE
383 char *option = NULL;
384 #endif
385
386 DBG_MSG("intelfb_init\n");
387
388 INF_MSG("Framebuffer driver for "
389 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
390 INF_MSG("Version " INTELFB_VERSION "\n");
391
392 if (idonly)
393 return -ENODEV;
394
395 #ifndef MODULE
396 if (fb_get_options("intelfb", &option))
397 return -ENODEV;
398 intelfb_setup(option);
399 #endif
400
401 return pci_register_driver(&intelfb_driver);
402 }
403
404 static void __exit intelfb_exit(void)
405 {
406 DBG_MSG("intelfb_exit\n");
407 pci_unregister_driver(&intelfb_driver);
408 }
409
410 module_init(intelfb_init);
411 module_exit(intelfb_exit);
412
413 /***************************************************************
414 * mtrr support functions *
415 ***************************************************************/
416
417 #ifdef CONFIG_MTRR
418 static inline void set_mtrr(struct intelfb_info *dinfo)
419 {
420 dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
421 dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
422 if (dinfo->mtrr_reg < 0) {
423 ERR_MSG("unable to set MTRR\n");
424 return;
425 }
426 dinfo->has_mtrr = 1;
427 }
428 static inline void unset_mtrr(struct intelfb_info *dinfo)
429 {
430 if (dinfo->has_mtrr)
431 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
432 dinfo->aperture.size);
433 }
434 #else
435 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
436
437 #define unset_mtrr(x) do { } while (0)
438 #endif /* CONFIG_MTRR */
439
440 /***************************************************************
441 * driver init / cleanup *
442 ***************************************************************/
443
444 static void cleanup(struct intelfb_info *dinfo)
445 {
446 DBG_MSG("cleanup\n");
447
448 if (!dinfo)
449 return;
450
451 intelfbhw_disable_irq(dinfo);
452
453 fb_dealloc_cmap(&dinfo->info->cmap);
454 kfree(dinfo->info->pixmap.addr);
455
456 if (dinfo->registered)
457 unregister_framebuffer(dinfo->info);
458
459 unset_mtrr(dinfo);
460
461 if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
462 agp_unbind_memory(dinfo->gtt_fb_mem);
463 agp_free_memory(dinfo->gtt_fb_mem);
464 }
465 if (dinfo->gtt_cursor_mem) {
466 agp_unbind_memory(dinfo->gtt_cursor_mem);
467 agp_free_memory(dinfo->gtt_cursor_mem);
468 }
469 if (dinfo->gtt_ring_mem) {
470 agp_unbind_memory(dinfo->gtt_ring_mem);
471 agp_free_memory(dinfo->gtt_ring_mem);
472 }
473
474 #ifdef CONFIG_FB_INTEL_I2C
475 /* un-register I2C bus */
476 intelfb_delete_i2c_busses(dinfo);
477 #endif
478
479 if (dinfo->mmio_base)
480 iounmap((void __iomem *)dinfo->mmio_base);
481 if (dinfo->aperture.virtual)
482 iounmap((void __iomem *)dinfo->aperture.virtual);
483
484 if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
485 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
486 if (dinfo->flag & INTELFB_FB_ACQUIRED)
487 release_mem_region(dinfo->aperture.physical,
488 dinfo->aperture.size);
489 framebuffer_release(dinfo->info);
490 }
491
492 #define bailout(dinfo) do { \
493 DBG_MSG("bailout\n"); \
494 cleanup(dinfo); \
495 INF_MSG("Not going to register framebuffer, exiting...\n"); \
496 return -ENODEV; \
497 } while (0)
498
499
500 static int intelfb_pci_register(struct pci_dev *pdev,
501 const struct pci_device_id *ent)
502 {
503 struct fb_info *info;
504 struct intelfb_info *dinfo;
505 int i, err, dvo;
506 int aperture_size, stolen_size;
507 struct agp_kern_info gtt_info;
508 int agp_memtype;
509 const char *s;
510 struct agp_bridge_data *bridge;
511 int aperture_bar = 0;
512 int mmio_bar = 1;
513 int offset;
514
515 DBG_MSG("intelfb_pci_register\n");
516
517 num_registered++;
518 if (num_registered != 1) {
519 ERR_MSG("Attempted to register %d devices "
520 "(should be only 1).\n", num_registered);
521 return -ENODEV;
522 }
523
524 info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
525 if (!info) {
526 ERR_MSG("Could not allocate memory for intelfb_info.\n");
527 return -ENODEV;
528 }
529 if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
530 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
531 goto err_out_cmap;
532 }
533
534 dinfo = info->par;
535 dinfo->info = info;
536 dinfo->fbops = &intel_fb_ops;
537 dinfo->pdev = pdev;
538
539 /* Reserve pixmap space. */
540 info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
541 if (info->pixmap.addr == NULL) {
542 ERR_MSG("Cannot reserve pixmap memory.\n");
543 goto err_out_pixmap;
544 }
545
546 /* set early this option because it could be changed by tv encoder
547 driver */
548 dinfo->fixed_mode = fixed;
549
550 /* Enable device. */
551 if ((err = pci_enable_device(pdev))) {
552 ERR_MSG("Cannot enable device.\n");
553 cleanup(dinfo);
554 return -ENODEV;
555 }
556
557 /* Set base addresses. */
558 if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
559 (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
560 (ent->device == PCI_DEVICE_ID_INTEL_945G) ||
561 (ent->device == PCI_DEVICE_ID_INTEL_945GM) ||
562 (ent->device == PCI_DEVICE_ID_INTEL_945GME) ||
563 (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
564 (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
565
566 aperture_bar = 2;
567 mmio_bar = 0;
568 }
569 dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
570 dinfo->aperture.size = pci_resource_len(pdev, aperture_bar);
571 dinfo->mmio_base_phys = pci_resource_start(pdev, mmio_bar);
572 DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
573 (unsigned long long)pci_resource_start(pdev, aperture_bar),
574 (unsigned long long)pci_resource_len(pdev, aperture_bar),
575 (unsigned long long)pci_resource_start(pdev, mmio_bar),
576 (unsigned long long)pci_resource_len(pdev, mmio_bar));
577
578 /* Reserve the fb and MMIO regions */
579 if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
580 INTELFB_MODULE_NAME)) {
581 ERR_MSG("Cannot reserve FB region.\n");
582 cleanup(dinfo);
583 return -ENODEV;
584 }
585
586 dinfo->flag |= INTELFB_FB_ACQUIRED;
587
588 if (!request_mem_region(dinfo->mmio_base_phys,
589 INTEL_REG_SIZE,
590 INTELFB_MODULE_NAME)) {
591 ERR_MSG("Cannot reserve MMIO region.\n");
592 cleanup(dinfo);
593 return -ENODEV;
594 }
595
596 dinfo->flag |= INTELFB_MMIO_ACQUIRED;
597
598 /* Get the chipset info. */
599 dinfo->pci_chipset = pdev->device;
600
601 if (intelfbhw_get_chipset(pdev, dinfo)) {
602 cleanup(dinfo);
603 return -ENODEV;
604 }
605
606 if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
607 cleanup(dinfo);
608 return -ENODEV;
609 }
610
611 INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
612 "stolen memory %dkB\n",
613 pdev->bus->number, PCI_SLOT(pdev->devfn),
614 PCI_FUNC(pdev->devfn), dinfo->name,
615 BtoMB(aperture_size), BtoKB(stolen_size));
616
617 /* Set these from the options. */
618 dinfo->accel = accel;
619 dinfo->hwcursor = hwcursor;
620
621 if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
622 INF_MSG("Acceleration is not supported for the %s chipset.\n",
623 dinfo->name);
624 dinfo->accel = 0;
625 }
626
627 /* Framebuffer parameters - Use all the stolen memory if >= vram */
628 if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
629 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
630 dinfo->fbmem_gart = 0;
631 } else {
632 dinfo->fb.size = MB(vram);
633 dinfo->fbmem_gart = 1;
634 }
635
636 /* Allocate space for the ring buffer and HW cursor if enabled. */
637 if (dinfo->accel) {
638 dinfo->ring.size = RINGBUFFER_SIZE;
639 dinfo->ring_tail_mask = dinfo->ring.size - 1;
640 }
641 if (dinfo->hwcursor)
642 dinfo->cursor.size = HW_CURSOR_SIZE;
643
644 /* Use agpgart to manage the GATT */
645 if (!(bridge = agp_backend_acquire(pdev))) {
646 ERR_MSG("cannot acquire agp\n");
647 cleanup(dinfo);
648 return -ENODEV;
649 }
650
651 /* get the current gatt info */
652 if (agp_copy_info(bridge, &gtt_info)) {
653 ERR_MSG("cannot get agp info\n");
654 agp_backend_release(bridge);
655 cleanup(dinfo);
656 return -ENODEV;
657 }
658
659 if (MB(voffset) < stolen_size)
660 offset = (stolen_size >> 12);
661 else
662 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
663
664 /* set the mem offsets - set them after the already used pages */
665 if (dinfo->accel)
666 dinfo->ring.offset = offset + gtt_info.current_memory;
667 if (dinfo->hwcursor)
668 dinfo->cursor.offset = offset +
669 + gtt_info.current_memory + (dinfo->ring.size >> 12);
670 if (dinfo->fbmem_gart)
671 dinfo->fb.offset = offset +
672 + gtt_info.current_memory + (dinfo->ring.size >> 12)
673 + (dinfo->cursor.size >> 12);
674
675 /* Allocate memories (which aren't stolen) */
676 /* Map the fb and MMIO regions */
677 /* ioremap only up to the end of used aperture */
678 dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
679 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
680 + dinfo->fb.size);
681 if (!dinfo->aperture.virtual) {
682 ERR_MSG("Cannot remap FB region.\n");
683 agp_backend_release(bridge);
684 cleanup(dinfo);
685 return -ENODEV;
686 }
687
688 dinfo->mmio_base =
689 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
690 INTEL_REG_SIZE);
691 if (!dinfo->mmio_base) {
692 ERR_MSG("Cannot remap MMIO region.\n");
693 agp_backend_release(bridge);
694 cleanup(dinfo);
695 return -ENODEV;
696 }
697
698 if (dinfo->accel) {
699 if (!(dinfo->gtt_ring_mem =
700 agp_allocate_memory(bridge, dinfo->ring.size >> 12,
701 AGP_NORMAL_MEMORY))) {
702 ERR_MSG("cannot allocate ring buffer memory\n");
703 agp_backend_release(bridge);
704 cleanup(dinfo);
705 return -ENOMEM;
706 }
707 if (agp_bind_memory(dinfo->gtt_ring_mem,
708 dinfo->ring.offset)) {
709 ERR_MSG("cannot bind ring buffer memory\n");
710 agp_backend_release(bridge);
711 cleanup(dinfo);
712 return -EBUSY;
713 }
714 dinfo->ring.physical = dinfo->aperture.physical
715 + (dinfo->ring.offset << 12);
716 dinfo->ring.virtual = dinfo->aperture.virtual
717 + (dinfo->ring.offset << 12);
718 dinfo->ring_head = 0;
719 }
720 if (dinfo->hwcursor) {
721 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
722 : AGP_NORMAL_MEMORY;
723 if (!(dinfo->gtt_cursor_mem =
724 agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
725 agp_memtype))) {
726 ERR_MSG("cannot allocate cursor memory\n");
727 agp_backend_release(bridge);
728 cleanup(dinfo);
729 return -ENOMEM;
730 }
731 if (agp_bind_memory(dinfo->gtt_cursor_mem,
732 dinfo->cursor.offset)) {
733 ERR_MSG("cannot bind cursor memory\n");
734 agp_backend_release(bridge);
735 cleanup(dinfo);
736 return -EBUSY;
737 }
738 if (dinfo->mobile)
739 dinfo->cursor.physical
740 = dinfo->gtt_cursor_mem->physical;
741 else
742 dinfo->cursor.physical = dinfo->aperture.physical
743 + (dinfo->cursor.offset << 12);
744 dinfo->cursor.virtual = dinfo->aperture.virtual
745 + (dinfo->cursor.offset << 12);
746 }
747 if (dinfo->fbmem_gart) {
748 if (!(dinfo->gtt_fb_mem =
749 agp_allocate_memory(bridge, dinfo->fb.size >> 12,
750 AGP_NORMAL_MEMORY))) {
751 WRN_MSG("cannot allocate framebuffer memory - use "
752 "the stolen one\n");
753 dinfo->fbmem_gart = 0;
754 }
755 if (agp_bind_memory(dinfo->gtt_fb_mem,
756 dinfo->fb.offset)) {
757 WRN_MSG("cannot bind framebuffer memory - use "
758 "the stolen one\n");
759 dinfo->fbmem_gart = 0;
760 }
761 }
762
763 /* update framebuffer memory parameters */
764 if (!dinfo->fbmem_gart)
765 dinfo->fb.offset = 0; /* starts at offset 0 */
766 dinfo->fb.physical = dinfo->aperture.physical
767 + (dinfo->fb.offset << 12);
768 dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
769 dinfo->fb_start = dinfo->fb.offset << 12;
770
771 /* release agpgart */
772 agp_backend_release(bridge);
773
774 if (mtrr)
775 set_mtrr(dinfo);
776
777 DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
778 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
779 dinfo->fb.virtual);
780 DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
781 dinfo->mmio_base_phys, INTEL_REG_SIZE,
782 dinfo->mmio_base);
783 DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
784 dinfo->ring.physical, dinfo->ring.size,
785 dinfo->ring.virtual);
786 DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
787 dinfo->cursor.physical, dinfo->cursor.size,
788 dinfo->cursor.virtual, dinfo->cursor.offset,
789 dinfo->cursor.physical);
790
791 DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
792 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
793 DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
794
795 if (probeonly)
796 bailout(dinfo);
797
798 /*
799 * Check if the LVDS port or any DVO ports are enabled. If so,
800 * don't allow mode switching
801 */
802 dvo = intelfbhw_check_non_crt(dinfo);
803 if (dvo) {
804 dinfo->fixed_mode = 1;
805 WRN_MSG("Non-CRT device is enabled ( ");
806 i = 0;
807 while (dvo) {
808 if (dvo & 1) {
809 s = intelfbhw_dvo_to_string(1 << i);
810 if (s)
811 printk("%s ", s);
812 }
813 dvo >>= 1;
814 ++i;
815 }
816 printk("). Disabling mode switching.\n");
817 }
818
819 if (bailearly == 1)
820 bailout(dinfo);
821
822 if (FIXED_MODE(dinfo) &&
823 screen_info.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 (screen_info.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)) /* remap fb address */
841 update_dinfo(dinfo, &dinfo->initial_var);
842
843 if (bailearly == 4)
844 bailout(dinfo);
845
846
847 if (intelfb_set_fbinfo(dinfo)) {
848 cleanup(dinfo);
849 return -ENODEV;
850 }
851
852 if (bailearly == 5)
853 bailout(dinfo);
854
855 #ifdef CONFIG_FB_INTEL_I2C
856 /* register I2C bus */
857 intelfb_create_i2c_busses(dinfo);
858 #endif
859
860 if (bailearly == 6)
861 bailout(dinfo);
862
863 pci_set_drvdata(pdev, dinfo);
864
865 /* Save the initial register state. */
866 i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
867 bailearly > 6 ? bailearly - 6 : 0);
868 if (i != 0) {
869 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
870 bailout(dinfo);
871 }
872
873 intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
874
875 if (bailearly == 18)
876 bailout(dinfo);
877
878 /* read active pipe */
879 dinfo->pipe = intelfbhw_active_pipe(&dinfo->save_state);
880
881 /* Cursor initialisation */
882 if (dinfo->hwcursor) {
883 intelfbhw_cursor_init(dinfo);
884 intelfbhw_cursor_reset(dinfo);
885 }
886
887 if (bailearly == 19)
888 bailout(dinfo);
889
890 /* 2d acceleration init */
891 if (dinfo->accel)
892 intelfbhw_2d_start(dinfo);
893
894 if (bailearly == 20)
895 bailout(dinfo);
896
897 if (noregister)
898 bailout(dinfo);
899
900 if (register_framebuffer(dinfo->info) < 0) {
901 ERR_MSG("Cannot register framebuffer.\n");
902 cleanup(dinfo);
903 return -ENODEV;
904 }
905
906 dinfo->registered = 1;
907 dinfo->open = 0;
908
909 init_waitqueue_head(&dinfo->vsync.wait);
910 spin_lock_init(&dinfo->int_lock);
911 dinfo->irq_flags = 0;
912 dinfo->vsync.pan_display = 0;
913 dinfo->vsync.pan_offset = 0;
914
915 return 0;
916
917 err_out_pixmap:
918 fb_dealloc_cmap(&info->cmap);
919 err_out_cmap:
920 framebuffer_release(info);
921 return -ENODEV;
922 }
923
924 static void 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__ intelfb_var_to_depth(const struct fb_var_screeninfo *var)
943 {
944 DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
945 var->bits_per_pixel, var->green.length);
946
947 switch (var->bits_per_pixel) {
948 case 16:
949 return (var->green.length == 6) ? 16 : 15;
950 case 32:
951 return 24;
952 default:
953 return var->bits_per_pixel;
954 }
955 }
956
957
958 static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
959 {
960 int xtot = var->xres + var->left_margin + var->right_margin +
961 var->hsync_len;
962 int ytot = var->yres + var->upper_margin + var->lower_margin +
963 var->vsync_len;
964
965 return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
966 }
967
968 /***************************************************************
969 * Various intialisation functions *
970 ***************************************************************/
971
972 static void get_initial_mode(struct intelfb_info *dinfo)
973 {
974 struct fb_var_screeninfo *var;
975 int xtot, ytot;
976
977 DBG_MSG("get_initial_mode\n");
978
979 dinfo->initial_vga = 1;
980 dinfo->initial_fb_base = screen_info.lfb_base;
981 dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
982 dinfo->initial_pitch = screen_info.lfb_linelength;
983
984 var = &dinfo->initial_var;
985 memset(var, 0, sizeof(*var));
986 var->xres = screen_info.lfb_width;
987 var->yres = screen_info.lfb_height;
988 var->bits_per_pixel = screen_info.lfb_depth;
989 switch (screen_info.lfb_depth) {
990 case 15:
991 var->bits_per_pixel = 16;
992 break;
993 case 24:
994 var->bits_per_pixel = 32;
995 break;
996 }
997
998 DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
999 dinfo->initial_fb_base, dinfo->initial_video_ram,
1000 BtoKB(dinfo->initial_video_ram));
1001
1002 DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
1003 var->xres, var->yres, var->bits_per_pixel,
1004 dinfo->initial_pitch);
1005
1006 /* Dummy timing values (assume 60Hz) */
1007 var->left_margin = (var->xres / 8) & 0xf8;
1008 var->right_margin = 32;
1009 var->upper_margin = 16;
1010 var->lower_margin = 4;
1011 var->hsync_len = (var->xres / 8) & 0xf8;
1012 var->vsync_len = 4;
1013
1014 xtot = var->xres + var->left_margin +
1015 var->right_margin + var->hsync_len;
1016 ytot = var->yres + var->upper_margin +
1017 var->lower_margin + var->vsync_len;
1018 var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1019
1020 var->height = -1;
1021 var->width = -1;
1022
1023 if (var->bits_per_pixel > 8) {
1024 var->red.offset = screen_info.red_pos;
1025 var->red.length = screen_info.red_size;
1026 var->green.offset = screen_info.green_pos;
1027 var->green.length = screen_info.green_size;
1028 var->blue.offset = screen_info.blue_pos;
1029 var->blue.length = screen_info.blue_size;
1030 var->transp.offset = screen_info.rsvd_pos;
1031 var->transp.length = screen_info.rsvd_size;
1032 } else {
1033 var->red.length = 8;
1034 var->green.length = 8;
1035 var->blue.length = 8;
1036 }
1037 }
1038
1039 static int intelfb_init_var(struct intelfb_info *dinfo)
1040 {
1041 struct fb_var_screeninfo *var;
1042 int msrc = 0;
1043
1044 DBG_MSG("intelfb_init_var\n");
1045
1046 var = &dinfo->info->var;
1047 if (FIXED_MODE(dinfo)) {
1048 memcpy(var, &dinfo->initial_var,
1049 sizeof(struct fb_var_screeninfo));
1050 msrc = 5;
1051 } else {
1052 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1053 u8 *edid_d = NULL;
1054
1055 if (edid_s) {
1056 edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1057
1058 if (edid_d) {
1059 fb_edid_to_monspecs(edid_d,
1060 &dinfo->info->monspecs);
1061 kfree(edid_d);
1062 }
1063 }
1064
1065 if (mode) {
1066 printk("intelfb: Looking for mode in private "
1067 "database\n");
1068 msrc = fb_find_mode(var, dinfo->info, mode,
1069 dinfo->info->monspecs.modedb,
1070 dinfo->info->monspecs.modedb_len,
1071 NULL, 0);
1072
1073 if (msrc && msrc > 1) {
1074 printk("intelfb: No mode in private database, "
1075 "intelfb: looking for mode in global "
1076 "database ");
1077 msrc = fb_find_mode(var, dinfo->info, mode,
1078 NULL, 0, NULL, 0);
1079
1080 if (msrc)
1081 msrc |= 8;
1082 }
1083
1084 }
1085
1086 if (!msrc)
1087 msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1088 NULL, 0, NULL, 0);
1089 }
1090
1091 if (!msrc) {
1092 ERR_MSG("Cannot find a suitable video mode.\n");
1093 return 1;
1094 }
1095
1096 INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1097 var->bits_per_pixel, var_to_refresh(var));
1098
1099 DBG_MSG("Initial video mode is from %d.\n", msrc);
1100
1101 #if ALLOCATE_FOR_PANNING
1102 /* Allow use of half of the video ram for panning */
1103 var->xres_virtual = var->xres;
1104 var->yres_virtual =
1105 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1106 if (var->yres_virtual < var->yres)
1107 var->yres_virtual = var->yres;
1108 #else
1109 var->yres_virtual = var->yres;
1110 #endif
1111
1112 if (dinfo->accel)
1113 var->accel_flags |= FB_ACCELF_TEXT;
1114 else
1115 var->accel_flags &= ~FB_ACCELF_TEXT;
1116
1117 return 0;
1118 }
1119
1120 static int intelfb_set_fbinfo(struct intelfb_info *dinfo)
1121 {
1122 struct fb_info *info = dinfo->info;
1123
1124 DBG_MSG("intelfb_set_fbinfo\n");
1125
1126 info->flags = FBINFO_FLAG_DEFAULT;
1127 info->fbops = &intel_fb_ops;
1128 info->pseudo_palette = dinfo->pseudo_palette;
1129
1130 info->pixmap.size = 64*1024;
1131 info->pixmap.buf_align = 8;
1132 info->pixmap.access_align = 32;
1133 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1134
1135 if (intelfb_init_var(dinfo))
1136 return 1;
1137
1138 info->pixmap.scan_align = 1;
1139 strcpy(info->fix.id, dinfo->name);
1140 info->fix.smem_start = dinfo->fb.physical;
1141 info->fix.smem_len = dinfo->fb.size;
1142 info->fix.type = FB_TYPE_PACKED_PIXELS;
1143 info->fix.type_aux = 0;
1144 info->fix.xpanstep = 8;
1145 info->fix.ypanstep = 1;
1146 info->fix.ywrapstep = 0;
1147 info->fix.mmio_start = dinfo->mmio_base_phys;
1148 info->fix.mmio_len = INTEL_REG_SIZE;
1149 info->fix.accel = FB_ACCEL_I830;
1150 update_dinfo(dinfo, &info->var);
1151
1152 return 0;
1153 }
1154
1155 /* Update dinfo to match the active video mode. */
1156 static void update_dinfo(struct intelfb_info *dinfo,
1157 struct fb_var_screeninfo *var)
1158 {
1159 DBG_MSG("update_dinfo\n");
1160
1161 dinfo->bpp = var->bits_per_pixel;
1162 dinfo->depth = intelfb_var_to_depth(var);
1163 dinfo->xres = var->xres;
1164 dinfo->yres = var->xres;
1165 dinfo->pixclock = var->pixclock;
1166
1167 dinfo->info->fix.visual = dinfo->visual;
1168 dinfo->info->fix.line_length = dinfo->pitch;
1169
1170 switch (dinfo->bpp) {
1171 case 8:
1172 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1173 dinfo->pitch = var->xres_virtual;
1174 break;
1175 case 16:
1176 dinfo->visual = FB_VISUAL_TRUECOLOR;
1177 dinfo->pitch = var->xres_virtual * 2;
1178 break;
1179 case 32:
1180 dinfo->visual = FB_VISUAL_TRUECOLOR;
1181 dinfo->pitch = var->xres_virtual * 4;
1182 break;
1183 }
1184
1185 /* Make sure the line length is a aligned correctly. */
1186 if (IS_I9XX(dinfo))
1187 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1188 else
1189 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1190
1191 if (FIXED_MODE(dinfo))
1192 dinfo->pitch = dinfo->initial_pitch;
1193
1194 dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1195 dinfo->info->fix.line_length = dinfo->pitch;
1196 dinfo->info->fix.visual = dinfo->visual;
1197 }
1198
1199 /* fbops functions */
1200
1201 /***************************************************************
1202 * fbdev interface *
1203 ***************************************************************/
1204
1205 static int intelfb_open(struct fb_info *info, int user)
1206 {
1207 struct intelfb_info *dinfo = GET_DINFO(info);
1208
1209 if (user)
1210 dinfo->open++;
1211
1212 return 0;
1213 }
1214
1215 static int intelfb_release(struct fb_info *info, int user)
1216 {
1217 struct intelfb_info *dinfo = GET_DINFO(info);
1218
1219 if (user) {
1220 dinfo->open--;
1221 msleep(1);
1222 if (!dinfo->open)
1223 intelfbhw_disable_irq(dinfo);
1224 }
1225
1226 return 0;
1227 }
1228
1229 static int intelfb_check_var(struct fb_var_screeninfo *var,
1230 struct fb_info *info)
1231 {
1232 int change_var = 0;
1233 struct fb_var_screeninfo v;
1234 struct intelfb_info *dinfo;
1235 static int first = 1;
1236 int i;
1237 /* Good pitches to allow tiling. Don't care about pitches < 1024. */
1238 static const int pitches[] = {
1239 128 * 8,
1240 128 * 16,
1241 128 * 32,
1242 128 * 64,
1243 0
1244 };
1245
1246 DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1247
1248 dinfo = GET_DINFO(info);
1249
1250 /* update the pitch */
1251 if (intelfbhw_validate_mode(dinfo, var) != 0)
1252 return -EINVAL;
1253
1254 v = *var;
1255
1256 for (i = 0; pitches[i] != 0; i++) {
1257 if (pitches[i] >= v.xres_virtual) {
1258 v.xres_virtual = pitches[i];
1259 break;
1260 }
1261 }
1262
1263 /* Check for a supported bpp. */
1264 if (v.bits_per_pixel <= 8)
1265 v.bits_per_pixel = 8;
1266 else if (v.bits_per_pixel <= 16) {
1267 if (v.bits_per_pixel == 16)
1268 v.green.length = 6;
1269 v.bits_per_pixel = 16;
1270 } else if (v.bits_per_pixel <= 32)
1271 v.bits_per_pixel = 32;
1272 else
1273 return -EINVAL;
1274
1275 change_var = ((info->var.xres != var->xres) ||
1276 (info->var.yres != var->yres) ||
1277 (info->var.xres_virtual != var->xres_virtual) ||
1278 (info->var.yres_virtual != var->yres_virtual) ||
1279 (info->var.bits_per_pixel != var->bits_per_pixel) ||
1280 memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1281 memcmp(&info->var.green, &var->green,
1282 sizeof(var->green)) ||
1283 memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1284
1285 if (FIXED_MODE(dinfo) &&
1286 (change_var ||
1287 var->yres_virtual > dinfo->initial_var.yres_virtual ||
1288 var->yres_virtual < dinfo->initial_var.yres ||
1289 var->xoffset || var->nonstd)) {
1290 if (first) {
1291 ERR_MSG("Changing the video mode is not supported.\n");
1292 first = 0;
1293 }
1294 return -EINVAL;
1295 }
1296
1297 switch (intelfb_var_to_depth(&v)) {
1298 case 8:
1299 v.red.offset = v.green.offset = v.blue.offset = 0;
1300 v.red.length = v.green.length = v.blue.length = 8;
1301 v.transp.offset = v.transp.length = 0;
1302 break;
1303 case 15:
1304 v.red.offset = 10;
1305 v.green.offset = 5;
1306 v.blue.offset = 0;
1307 v.red.length = v.green.length = v.blue.length = 5;
1308 v.transp.offset = v.transp.length = 0;
1309 break;
1310 case 16:
1311 v.red.offset = 11;
1312 v.green.offset = 5;
1313 v.blue.offset = 0;
1314 v.red.length = 5;
1315 v.green.length = 6;
1316 v.blue.length = 5;
1317 v.transp.offset = v.transp.length = 0;
1318 break;
1319 case 24:
1320 v.red.offset = 16;
1321 v.green.offset = 8;
1322 v.blue.offset = 0;
1323 v.red.length = v.green.length = v.blue.length = 8;
1324 v.transp.offset = v.transp.length = 0;
1325 break;
1326 case 32:
1327 v.red.offset = 16;
1328 v.green.offset = 8;
1329 v.blue.offset = 0;
1330 v.red.length = v.green.length = v.blue.length = 8;
1331 v.transp.offset = 24;
1332 v.transp.length = 8;
1333 break;
1334 }
1335
1336 if (v.xoffset < 0)
1337 v.xoffset = 0;
1338 if (v.yoffset < 0)
1339 v.yoffset = 0;
1340
1341 if (v.xoffset > v.xres_virtual - v.xres)
1342 v.xoffset = v.xres_virtual - v.xres;
1343 if (v.yoffset > v.yres_virtual - v.yres)
1344 v.yoffset = v.yres_virtual - v.yres;
1345
1346 v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1347 v.transp.msb_right = 0;
1348
1349 *var = v;
1350
1351 return 0;
1352 }
1353
1354 static int intelfb_set_par(struct fb_info *info)
1355 {
1356 struct intelfb_hwstate *hw;
1357 struct intelfb_info *dinfo = GET_DINFO(info);
1358
1359 if (FIXED_MODE(dinfo)) {
1360 ERR_MSG("Changing the video mode is not supported.\n");
1361 return -EINVAL;
1362 }
1363
1364 hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1365 if (!hw)
1366 return -ENOMEM;
1367
1368 DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1369 info->var.yres, info->var.bits_per_pixel);
1370
1371 /*
1372 * Disable VCO prior to timing register change.
1373 */
1374 OUTREG(DPLL_A, INREG(DPLL_A) & ~DPLL_VCO_ENABLE);
1375
1376 intelfb_blank(FB_BLANK_POWERDOWN, info);
1377
1378 if (ACCEL(dinfo, info))
1379 intelfbhw_2d_stop(dinfo);
1380
1381 memcpy(hw, &dinfo->save_state, sizeof(*hw));
1382 if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1383 goto invalid_mode;
1384 if (intelfbhw_program_mode(dinfo, hw, 0))
1385 goto invalid_mode;
1386
1387 #if REGDUMP > 0
1388 intelfbhw_read_hw_state(dinfo, hw, 0);
1389 intelfbhw_print_hw_state(dinfo, hw);
1390 #endif
1391
1392 update_dinfo(dinfo, &info->var);
1393
1394 if (ACCEL(dinfo, info))
1395 intelfbhw_2d_start(dinfo);
1396
1397 intelfb_pan_display(&info->var, info);
1398
1399 intelfb_blank(FB_BLANK_UNBLANK, info);
1400
1401 if (ACCEL(dinfo, info)) {
1402 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1403 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1404 FBINFO_HWACCEL_IMAGEBLIT;
1405 } else
1406 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1407
1408 kfree(hw);
1409 return 0;
1410 invalid_mode:
1411 kfree(hw);
1412 return -EINVAL;
1413 }
1414
1415 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1416 unsigned blue, unsigned transp,
1417 struct fb_info *info)
1418 {
1419 struct intelfb_info *dinfo = GET_DINFO(info);
1420
1421 #if VERBOSE > 0
1422 DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1423 #endif
1424
1425 if (regno > 255)
1426 return 1;
1427
1428 if (dinfo->depth == 8) {
1429 red >>= 8;
1430 green >>= 8;
1431 blue >>= 8;
1432
1433 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1434 transp);
1435 }
1436
1437 if (regno < 16) {
1438 switch (dinfo->depth) {
1439 case 15:
1440 dinfo->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
1441 ((green & 0xf800) >> 6) |
1442 ((blue & 0xf800) >> 11);
1443 break;
1444 case 16:
1445 dinfo->pseudo_palette[regno] = (red & 0xf800) |
1446 ((green & 0xfc00) >> 5) |
1447 ((blue & 0xf800) >> 11);
1448 break;
1449 case 24:
1450 dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1451 (green & 0xff00) |
1452 ((blue & 0xff00) >> 8);
1453 break;
1454 }
1455 }
1456
1457 return 0;
1458 }
1459
1460 static int intelfb_blank(int blank, struct fb_info *info)
1461 {
1462 intelfbhw_do_blank(blank, info);
1463 return 0;
1464 }
1465
1466 static int intelfb_pan_display(struct fb_var_screeninfo *var,
1467 struct fb_info *info)
1468 {
1469 intelfbhw_pan_display(var, info);
1470 return 0;
1471 }
1472
1473 /* When/if we have our own ioctls. */
1474 static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1475 unsigned long arg)
1476 {
1477 int retval = 0;
1478 struct intelfb_info *dinfo = GET_DINFO(info);
1479 u32 pipe = 0;
1480
1481 switch (cmd) {
1482 case FBIO_WAITFORVSYNC:
1483 if (get_user(pipe, (__u32 __user *)arg))
1484 return -EFAULT;
1485
1486 retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1487 break;
1488 default:
1489 break;
1490 }
1491
1492 return retval;
1493 }
1494
1495 static void intelfb_fillrect (struct fb_info *info,
1496 const struct fb_fillrect *rect)
1497 {
1498 struct intelfb_info *dinfo = GET_DINFO(info);
1499 u32 rop, color;
1500
1501 #if VERBOSE > 0
1502 DBG_MSG("intelfb_fillrect\n");
1503 #endif
1504
1505 if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1506 cfb_fillrect(info, rect);
1507 return;
1508 }
1509
1510 if (rect->rop == ROP_COPY)
1511 rop = PAT_ROP_GXCOPY;
1512 else /* ROP_XOR */
1513 rop = PAT_ROP_GXXOR;
1514
1515 if (dinfo->depth != 8)
1516 color = dinfo->pseudo_palette[rect->color];
1517 else
1518 color = rect->color;
1519
1520 intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1521 rect->width, rect->height, color,
1522 dinfo->pitch, info->var.bits_per_pixel,
1523 rop);
1524 }
1525
1526 static void intelfb_copyarea(struct fb_info *info,
1527 const struct fb_copyarea *region)
1528 {
1529 struct intelfb_info *dinfo = GET_DINFO(info);
1530
1531 #if VERBOSE > 0
1532 DBG_MSG("intelfb_copyarea\n");
1533 #endif
1534
1535 if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1536 cfb_copyarea(info, region);
1537 return;
1538 }
1539
1540 intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1541 region->dy, region->width, region->height,
1542 dinfo->pitch, info->var.bits_per_pixel);
1543 }
1544
1545 static void intelfb_imageblit(struct fb_info *info,
1546 const struct fb_image *image)
1547 {
1548 struct intelfb_info *dinfo = GET_DINFO(info);
1549 u32 fgcolor, bgcolor;
1550
1551 #if VERBOSE > 0
1552 DBG_MSG("intelfb_imageblit\n");
1553 #endif
1554
1555 if (!ACCEL(dinfo, info) || dinfo->depth == 4
1556 || image->depth != 1) {
1557 cfb_imageblit(info, image);
1558 return;
1559 }
1560
1561 if (dinfo->depth != 8) {
1562 fgcolor = dinfo->pseudo_palette[image->fg_color];
1563 bgcolor = dinfo->pseudo_palette[image->bg_color];
1564 } else {
1565 fgcolor = image->fg_color;
1566 bgcolor = image->bg_color;
1567 }
1568
1569 if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1570 image->height, image->data,
1571 image->dx, image->dy,
1572 dinfo->pitch, info->var.bits_per_pixel)) {
1573 cfb_imageblit(info, image);
1574 return;
1575 }
1576 }
1577
1578 static int 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 intelfb_sync(struct fb_info *info)
1693 {
1694 struct intelfb_info *dinfo = GET_DINFO(info);
1695
1696 #if VERBOSE > 0
1697 DBG_MSG("intelfb_sync\n");
1698 #endif
1699
1700 if (dinfo->ring_lockup)
1701 return 0;
1702
1703 intelfbhw_do_sync(dinfo);
1704 return 0;
1705 }
1706
kernel source for telekom puls (alcatel/mediatek)