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[pohmelfs.git] / drivers / video / intelfb / intelfbdrv.c
blob02fd2263610c1c63d1cdb8cd8173373a3ce88200
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 __devinit 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 __devinit intelfb_pci_register(struct pci_dev *pdev,
166 const struct pci_device_id *ent);
167 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
168 static int __devinit 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[] __devinitdata = {
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 = __devexit_p(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 __devinit 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 __devinit 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 cleanup(dinfo);
684 return -ENODEV;
685 }
686
687 dinfo->mmio_base =
688 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
689 INTEL_REG_SIZE);
690 if (!dinfo->mmio_base) {
691 ERR_MSG("Cannot remap MMIO region.\n");
692 cleanup(dinfo);
693 return -ENODEV;
694 }
695
696 if (dinfo->accel) {
697 if (!(dinfo->gtt_ring_mem =
698 agp_allocate_memory(bridge, dinfo->ring.size >> 12,
699 AGP_NORMAL_MEMORY))) {
700 ERR_MSG("cannot allocate ring buffer memory\n");
701 agp_backend_release(bridge);
702 cleanup(dinfo);
703 return -ENOMEM;
704 }
705 if (agp_bind_memory(dinfo->gtt_ring_mem,
706 dinfo->ring.offset)) {
707 ERR_MSG("cannot bind ring buffer memory\n");
708 agp_backend_release(bridge);
709 cleanup(dinfo);
710 return -EBUSY;
711 }
712 dinfo->ring.physical = dinfo->aperture.physical
713 + (dinfo->ring.offset << 12);
714 dinfo->ring.virtual = dinfo->aperture.virtual
715 + (dinfo->ring.offset << 12);
716 dinfo->ring_head = 0;
717 }
718 if (dinfo->hwcursor) {
719 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
720 : AGP_NORMAL_MEMORY;
721 if (!(dinfo->gtt_cursor_mem =
722 agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
723 agp_memtype))) {
724 ERR_MSG("cannot allocate cursor memory\n");
725 agp_backend_release(bridge);
726 cleanup(dinfo);
727 return -ENOMEM;
728 }
729 if (agp_bind_memory(dinfo->gtt_cursor_mem,
730 dinfo->cursor.offset)) {
731 ERR_MSG("cannot bind cursor memory\n");
732 agp_backend_release(bridge);
733 cleanup(dinfo);
734 return -EBUSY;
735 }
736 if (dinfo->mobile)
737 dinfo->cursor.physical
738 = dinfo->gtt_cursor_mem->physical;
739 else
740 dinfo->cursor.physical = dinfo->aperture.physical
741 + (dinfo->cursor.offset << 12);
742 dinfo->cursor.virtual = dinfo->aperture.virtual
743 + (dinfo->cursor.offset << 12);
744 }
745 if (dinfo->fbmem_gart) {
746 if (!(dinfo->gtt_fb_mem =
747 agp_allocate_memory(bridge, dinfo->fb.size >> 12,
748 AGP_NORMAL_MEMORY))) {
749 WRN_MSG("cannot allocate framebuffer memory - use "
750 "the stolen one\n");
751 dinfo->fbmem_gart = 0;
752 }
753 if (agp_bind_memory(dinfo->gtt_fb_mem,
754 dinfo->fb.offset)) {
755 WRN_MSG("cannot bind framebuffer memory - use "
756 "the stolen one\n");
757 dinfo->fbmem_gart = 0;
758 }
759 }
760
761 /* update framebuffer memory parameters */
762 if (!dinfo->fbmem_gart)
763 dinfo->fb.offset = 0; /* starts at offset 0 */
764 dinfo->fb.physical = dinfo->aperture.physical
765 + (dinfo->fb.offset << 12);
766 dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
767 dinfo->fb_start = dinfo->fb.offset << 12;
768
769 /* release agpgart */
770 agp_backend_release(bridge);
771
772 if (mtrr)
773 set_mtrr(dinfo);
774
775 DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
776 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
777 dinfo->fb.virtual);
778 DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
779 dinfo->mmio_base_phys, INTEL_REG_SIZE,
780 dinfo->mmio_base);
781 DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
782 dinfo->ring.physical, dinfo->ring.size,
783 dinfo->ring.virtual);
784 DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
785 dinfo->cursor.physical, dinfo->cursor.size,
786 dinfo->cursor.virtual, dinfo->cursor.offset,
787 dinfo->cursor.physical);
788
789 DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
790 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
791 DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
792
793 if (probeonly)
794 bailout(dinfo);
795
796 /*
797 * Check if the LVDS port or any DVO ports are enabled. If so,
798 * don't allow mode switching
799 */
800 dvo = intelfbhw_check_non_crt(dinfo);
801 if (dvo) {
802 dinfo->fixed_mode = 1;
803 WRN_MSG("Non-CRT device is enabled ( ");
804 i = 0;
805 while (dvo) {
806 if (dvo & 1) {
807 s = intelfbhw_dvo_to_string(1 << i);
808 if (s)
809 printk("%s ", s);
810 }
811 dvo >>= 1;
812 ++i;
813 }
814 printk("). Disabling mode switching.\n");
815 }
816
817 if (bailearly == 1)
818 bailout(dinfo);
819
820 if (FIXED_MODE(dinfo) &&
821 screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
822 ERR_MSG("Video mode must be programmed at boot time.\n");
823 cleanup(dinfo);
824 return -ENODEV;
825 }
826
827 if (bailearly == 2)
828 bailout(dinfo);
829
830 /* Initialise dinfo and related data. */
831 /* If an initial mode was programmed at boot time, get its details. */
832 if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
833 get_initial_mode(dinfo);
834
835 if (bailearly == 3)
836 bailout(dinfo);
837
838 if (FIXED_MODE(dinfo)) /* remap fb address */
839 update_dinfo(dinfo, &dinfo->initial_var);
840
841 if (bailearly == 4)
842 bailout(dinfo);
843
844
845 if (intelfb_set_fbinfo(dinfo)) {
846 cleanup(dinfo);
847 return -ENODEV;
848 }
849
850 if (bailearly == 5)
851 bailout(dinfo);
852
853 #ifdef CONFIG_FB_INTEL_I2C
854 /* register I2C bus */
855 intelfb_create_i2c_busses(dinfo);
856 #endif
857
858 if (bailearly == 6)
859 bailout(dinfo);
860
861 pci_set_drvdata(pdev, dinfo);
862
863 /* Save the initial register state. */
864 i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
865 bailearly > 6 ? bailearly - 6 : 0);
866 if (i != 0) {
867 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
868 bailout(dinfo);
869 }
870
871 intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
872
873 if (bailearly == 18)
874 bailout(dinfo);
875
876 /* read active pipe */
877 dinfo->pipe = intelfbhw_active_pipe(&dinfo->save_state);
878
879 /* Cursor initialisation */
880 if (dinfo->hwcursor) {
881 intelfbhw_cursor_init(dinfo);
882 intelfbhw_cursor_reset(dinfo);
883 }
884
885 if (bailearly == 19)
886 bailout(dinfo);
887
888 /* 2d acceleration init */
889 if (dinfo->accel)
890 intelfbhw_2d_start(dinfo);
891
892 if (bailearly == 20)
893 bailout(dinfo);
894
895 if (noregister)
896 bailout(dinfo);
897
898 if (register_framebuffer(dinfo->info) < 0) {
899 ERR_MSG("Cannot register framebuffer.\n");
900 cleanup(dinfo);
901 return -ENODEV;
902 }
903
904 dinfo->registered = 1;
905 dinfo->open = 0;
906
907 init_waitqueue_head(&dinfo->vsync.wait);
908 spin_lock_init(&dinfo->int_lock);
909 dinfo->irq_flags = 0;
910 dinfo->vsync.pan_display = 0;
911 dinfo->vsync.pan_offset = 0;
912
913 return 0;
914
915 err_out_pixmap:
916 fb_dealloc_cmap(&info->cmap);
917 err_out_cmap:
918 framebuffer_release(info);
919 return -ENODEV;
920 }
921
922 static void __devexit
923 intelfb_pci_unregister(struct pci_dev *pdev)
924 {
925 struct intelfb_info *dinfo = pci_get_drvdata(pdev);
926
927 DBG_MSG("intelfb_pci_unregister\n");
928
929 if (!dinfo)
930 return;
931
932 cleanup(dinfo);
933
934 pci_set_drvdata(pdev, NULL);
935 }
936
937 /***************************************************************
938 * helper functions *
939 ***************************************************************/
940
941 int __inline__ intelfb_var_to_depth(const struct fb_var_screeninfo *var)
942 {
943 DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
944 var->bits_per_pixel, var->green.length);
945
946 switch (var->bits_per_pixel) {
947 case 16:
948 return (var->green.length == 6) ? 16 : 15;
949 case 32:
950 return 24;
951 default:
952 return var->bits_per_pixel;
953 }
954 }
955
956
957 static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
958 {
959 int xtot = var->xres + var->left_margin + var->right_margin +
960 var->hsync_len;
961 int ytot = var->yres + var->upper_margin + var->lower_margin +
962 var->vsync_len;
963
964 return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
965 }
966
967 /***************************************************************
968 * Various intialisation functions *
969 ***************************************************************/
970
971 static void __devinit get_initial_mode(struct intelfb_info *dinfo)
972 {
973 struct fb_var_screeninfo *var;
974 int xtot, ytot;
975
976 DBG_MSG("get_initial_mode\n");
977
978 dinfo->initial_vga = 1;
979 dinfo->initial_fb_base = screen_info.lfb_base;
980 dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
981 dinfo->initial_pitch = screen_info.lfb_linelength;
982
983 var = &dinfo->initial_var;
984 memset(var, 0, sizeof(*var));
985 var->xres = screen_info.lfb_width;
986 var->yres = screen_info.lfb_height;
987 var->bits_per_pixel = screen_info.lfb_depth;
988 switch (screen_info.lfb_depth) {
989 case 15:
990 var->bits_per_pixel = 16;
991 break;
992 case 24:
993 var->bits_per_pixel = 32;
994 break;
995 }
996
997 DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
998 dinfo->initial_fb_base, dinfo->initial_video_ram,
999 BtoKB(dinfo->initial_video_ram));
1000
1001 DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
1002 var->xres, var->yres, var->bits_per_pixel,
1003 dinfo->initial_pitch);
1004
1005 /* Dummy timing values (assume 60Hz) */
1006 var->left_margin = (var->xres / 8) & 0xf8;
1007 var->right_margin = 32;
1008 var->upper_margin = 16;
1009 var->lower_margin = 4;
1010 var->hsync_len = (var->xres / 8) & 0xf8;
1011 var->vsync_len = 4;
1012
1013 xtot = var->xres + var->left_margin +
1014 var->right_margin + var->hsync_len;
1015 ytot = var->yres + var->upper_margin +
1016 var->lower_margin + var->vsync_len;
1017 var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1018
1019 var->height = -1;
1020 var->width = -1;
1021
1022 if (var->bits_per_pixel > 8) {
1023 var->red.offset = screen_info.red_pos;
1024 var->red.length = screen_info.red_size;
1025 var->green.offset = screen_info.green_pos;
1026 var->green.length = screen_info.green_size;
1027 var->blue.offset = screen_info.blue_pos;
1028 var->blue.length = screen_info.blue_size;
1029 var->transp.offset = screen_info.rsvd_pos;
1030 var->transp.length = screen_info.rsvd_size;
1031 } else {
1032 var->red.length = 8;
1033 var->green.length = 8;
1034 var->blue.length = 8;
1035 }
1036 }
1037
1038 static int __devinit intelfb_init_var(struct intelfb_info *dinfo)
1039 {
1040 struct fb_var_screeninfo *var;
1041 int msrc = 0;
1042
1043 DBG_MSG("intelfb_init_var\n");
1044
1045 var = &dinfo->info->var;
1046 if (FIXED_MODE(dinfo)) {
1047 memcpy(var, &dinfo->initial_var,
1048 sizeof(struct fb_var_screeninfo));
1049 msrc = 5;
1050 } else {
1051 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1052 u8 *edid_d = NULL;
1053
1054 if (edid_s) {
1055 edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1056
1057 if (edid_d) {
1058 fb_edid_to_monspecs(edid_d,
1059 &dinfo->info->monspecs);
1060 kfree(edid_d);
1061 }
1062 }
1063
1064 if (mode) {
1065 printk("intelfb: Looking for mode in private "
1066 "database\n");
1067 msrc = fb_find_mode(var, dinfo->info, mode,
1068 dinfo->info->monspecs.modedb,
1069 dinfo->info->monspecs.modedb_len,
1070 NULL, 0);
1071
1072 if (msrc && msrc > 1) {
1073 printk("intelfb: No mode in private database, "
1074 "intelfb: looking for mode in global "
1075 "database ");
1076 msrc = fb_find_mode(var, dinfo->info, mode,
1077 NULL, 0, NULL, 0);
1078
1079 if (msrc)
1080 msrc |= 8;
1081 }
1082
1083 }
1084
1085 if (!msrc)
1086 msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1087 NULL, 0, NULL, 0);
1088 }
1089
1090 if (!msrc) {
1091 ERR_MSG("Cannot find a suitable video mode.\n");
1092 return 1;
1093 }
1094
1095 INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1096 var->bits_per_pixel, var_to_refresh(var));
1097
1098 DBG_MSG("Initial video mode is from %d.\n", msrc);
1099
1100 #if ALLOCATE_FOR_PANNING
1101 /* Allow use of half of the video ram for panning */
1102 var->xres_virtual = var->xres;
1103 var->yres_virtual =
1104 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1105 if (var->yres_virtual < var->yres)
1106 var->yres_virtual = var->yres;
1107 #else
1108 var->yres_virtual = var->yres;
1109 #endif
1110
1111 if (dinfo->accel)
1112 var->accel_flags |= FB_ACCELF_TEXT;
1113 else
1114 var->accel_flags &= ~FB_ACCELF_TEXT;
1115
1116 return 0;
1117 }
1118
1119 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo)
1120 {
1121 struct fb_info *info = dinfo->info;
1122
1123 DBG_MSG("intelfb_set_fbinfo\n");
1124
1125 info->flags = FBINFO_FLAG_DEFAULT;
1126 info->fbops = &intel_fb_ops;
1127 info->pseudo_palette = dinfo->pseudo_palette;
1128
1129 info->pixmap.size = 64*1024;
1130 info->pixmap.buf_align = 8;
1131 info->pixmap.access_align = 32;
1132 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1133
1134 if (intelfb_init_var(dinfo))
1135 return 1;
1136
1137 info->pixmap.scan_align = 1;
1138 strcpy(info->fix.id, dinfo->name);
1139 info->fix.smem_start = dinfo->fb.physical;
1140 info->fix.smem_len = dinfo->fb.size;
1141 info->fix.type = FB_TYPE_PACKED_PIXELS;
1142 info->fix.type_aux = 0;
1143 info->fix.xpanstep = 8;
1144 info->fix.ypanstep = 1;
1145 info->fix.ywrapstep = 0;
1146 info->fix.mmio_start = dinfo->mmio_base_phys;
1147 info->fix.mmio_len = INTEL_REG_SIZE;
1148 info->fix.accel = FB_ACCEL_I830;
1149 update_dinfo(dinfo, &info->var);
1150
1151 return 0;
1152 }
1153
1154 /* Update dinfo to match the active video mode. */
1155 static void update_dinfo(struct intelfb_info *dinfo,
1156 struct fb_var_screeninfo *var)
1157 {
1158 DBG_MSG("update_dinfo\n");
1159
1160 dinfo->bpp = var->bits_per_pixel;
1161 dinfo->depth = intelfb_var_to_depth(var);
1162 dinfo->xres = var->xres;
1163 dinfo->yres = var->xres;
1164 dinfo->pixclock = var->pixclock;
1165
1166 dinfo->info->fix.visual = dinfo->visual;
1167 dinfo->info->fix.line_length = dinfo->pitch;
1168
1169 switch (dinfo->bpp) {
1170 case 8:
1171 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1172 dinfo->pitch = var->xres_virtual;
1173 break;
1174 case 16:
1175 dinfo->visual = FB_VISUAL_TRUECOLOR;
1176 dinfo->pitch = var->xres_virtual * 2;
1177 break;
1178 case 32:
1179 dinfo->visual = FB_VISUAL_TRUECOLOR;
1180 dinfo->pitch = var->xres_virtual * 4;
1181 break;
1182 }
1183
1184 /* Make sure the line length is a aligned correctly. */
1185 if (IS_I9XX(dinfo))
1186 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1187 else
1188 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1189
1190 if (FIXED_MODE(dinfo))
1191 dinfo->pitch = dinfo->initial_pitch;
1192
1193 dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1194 dinfo->info->fix.line_length = dinfo->pitch;
1195 dinfo->info->fix.visual = dinfo->visual;
1196 }
1197
1198 /* fbops functions */
1199
1200 /***************************************************************
1201 * fbdev interface *
1202 ***************************************************************/
1203
1204 static int intelfb_open(struct fb_info *info, int user)
1205 {
1206 struct intelfb_info *dinfo = GET_DINFO(info);
1207
1208 if (user)
1209 dinfo->open++;
1210
1211 return 0;
1212 }
1213
1214 static int intelfb_release(struct fb_info *info, int user)
1215 {
1216 struct intelfb_info *dinfo = GET_DINFO(info);
1217
1218 if (user) {
1219 dinfo->open--;
1220 msleep(1);
1221 if (!dinfo->open)
1222 intelfbhw_disable_irq(dinfo);
1223 }
1224
1225 return 0;
1226 }
1227
1228 static int intelfb_check_var(struct fb_var_screeninfo *var,
1229 struct fb_info *info)
1230 {
1231 int change_var = 0;
1232 struct fb_var_screeninfo v;
1233 struct intelfb_info *dinfo;
1234 static int first = 1;
1235 int i;
1236 /* Good pitches to allow tiling. Don't care about pitches < 1024. */
1237 static const int pitches[] = {
1238 128 * 8,
1239 128 * 16,
1240 128 * 32,
1241 128 * 64,
1242 0
1243 };
1244
1245 DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1246
1247 dinfo = GET_DINFO(info);
1248
1249 /* update the pitch */
1250 if (intelfbhw_validate_mode(dinfo, var) != 0)
1251 return -EINVAL;
1252
1253 v = *var;
1254
1255 for (i = 0; pitches[i] != 0; i++) {
1256 if (pitches[i] >= v.xres_virtual) {
1257 v.xres_virtual = pitches[i];
1258 break;
1259 }
1260 }
1261
1262 /* Check for a supported bpp. */
1263 if (v.bits_per_pixel <= 8)
1264 v.bits_per_pixel = 8;
1265 else if (v.bits_per_pixel <= 16) {
1266 if (v.bits_per_pixel == 16)
1267 v.green.length = 6;
1268 v.bits_per_pixel = 16;
1269 } else if (v.bits_per_pixel <= 32)
1270 v.bits_per_pixel = 32;
1271 else
1272 return -EINVAL;
1273
1274 change_var = ((info->var.xres != var->xres) ||
1275 (info->var.yres != var->yres) ||
1276 (info->var.xres_virtual != var->xres_virtual) ||
1277 (info->var.yres_virtual != var->yres_virtual) ||
1278 (info->var.bits_per_pixel != var->bits_per_pixel) ||
1279 memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1280 memcmp(&info->var.green, &var->green,
1281 sizeof(var->green)) ||
1282 memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1283
1284 if (FIXED_MODE(dinfo) &&
1285 (change_var ||
1286 var->yres_virtual > dinfo->initial_var.yres_virtual ||
1287 var->yres_virtual < dinfo->initial_var.yres ||
1288 var->xoffset || var->nonstd)) {
1289 if (first) {
1290 ERR_MSG("Changing the video mode is not supported.\n");
1291 first = 0;
1292 }
1293 return -EINVAL;
1294 }
1295
1296 switch (intelfb_var_to_depth(&v)) {
1297 case 8:
1298 v.red.offset = v.green.offset = v.blue.offset = 0;
1299 v.red.length = v.green.length = v.blue.length = 8;
1300 v.transp.offset = v.transp.length = 0;
1301 break;
1302 case 15:
1303 v.red.offset = 10;
1304 v.green.offset = 5;
1305 v.blue.offset = 0;
1306 v.red.length = v.green.length = v.blue.length = 5;
1307 v.transp.offset = v.transp.length = 0;
1308 break;
1309 case 16:
1310 v.red.offset = 11;
1311 v.green.offset = 5;
1312 v.blue.offset = 0;
1313 v.red.length = 5;
1314 v.green.length = 6;
1315 v.blue.length = 5;
1316 v.transp.offset = v.transp.length = 0;
1317 break;
1318 case 24:
1319 v.red.offset = 16;
1320 v.green.offset = 8;
1321 v.blue.offset = 0;
1322 v.red.length = v.green.length = v.blue.length = 8;
1323 v.transp.offset = v.transp.length = 0;
1324 break;
1325 case 32:
1326 v.red.offset = 16;
1327 v.green.offset = 8;
1328 v.blue.offset = 0;
1329 v.red.length = v.green.length = v.blue.length = 8;
1330 v.transp.offset = 24;
1331 v.transp.length = 8;
1332 break;
1333 }
1334
1335 if (v.xoffset < 0)
1336 v.xoffset = 0;
1337 if (v.yoffset < 0)
1338 v.yoffset = 0;
1339
1340 if (v.xoffset > v.xres_virtual - v.xres)
1341 v.xoffset = v.xres_virtual - v.xres;
1342 if (v.yoffset > v.yres_virtual - v.yres)
1343 v.yoffset = v.yres_virtual - v.yres;
1344
1345 v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1346 v.transp.msb_right = 0;
1347
1348 *var = v;
1349
1350 return 0;
1351 }
1352
1353 static int intelfb_set_par(struct fb_info *info)
1354 {
1355 struct intelfb_hwstate *hw;
1356 struct intelfb_info *dinfo = GET_DINFO(info);
1357
1358 if (FIXED_MODE(dinfo)) {
1359 ERR_MSG("Changing the video mode is not supported.\n");
1360 return -EINVAL;
1361 }
1362
1363 hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1364 if (!hw)
1365 return -ENOMEM;
1366
1367 DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1368 info->var.yres, info->var.bits_per_pixel);
1369
1370 /*
1371 * Disable VCO prior to timing register change.
1372 */
1373 OUTREG(DPLL_A, INREG(DPLL_A) & ~DPLL_VCO_ENABLE);
1374
1375 intelfb_blank(FB_BLANK_POWERDOWN, info);
1376
1377 if (ACCEL(dinfo, info))
1378 intelfbhw_2d_stop(dinfo);
1379
1380 memcpy(hw, &dinfo->save_state, sizeof(*hw));
1381 if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1382 goto invalid_mode;
1383 if (intelfbhw_program_mode(dinfo, hw, 0))
1384 goto invalid_mode;
1385
1386 #if REGDUMP > 0
1387 intelfbhw_read_hw_state(dinfo, hw, 0);
1388 intelfbhw_print_hw_state(dinfo, hw);
1389 #endif
1390
1391 update_dinfo(dinfo, &info->var);
1392
1393 if (ACCEL(dinfo, info))
1394 intelfbhw_2d_start(dinfo);
1395
1396 intelfb_pan_display(&info->var, info);
1397
1398 intelfb_blank(FB_BLANK_UNBLANK, info);
1399
1400 if (ACCEL(dinfo, info)) {
1401 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1402 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1403 FBINFO_HWACCEL_IMAGEBLIT;
1404 } else
1405 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1406
1407 kfree(hw);
1408 return 0;
1409 invalid_mode:
1410 kfree(hw);
1411 return -EINVAL;
1412 }
1413
1414 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1415 unsigned blue, unsigned transp,
1416 struct fb_info *info)
1417 {
1418 struct intelfb_info *dinfo = GET_DINFO(info);
1419
1420 #if VERBOSE > 0
1421 DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1422 #endif
1423
1424 if (regno > 255)
1425 return 1;
1426
1427 if (dinfo->depth == 8) {
1428 red >>= 8;
1429 green >>= 8;
1430 blue >>= 8;
1431
1432 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1433 transp);
1434 }
1435
1436 if (regno < 16) {
1437 switch (dinfo->depth) {
1438 case 15:
1439 dinfo->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
1440 ((green & 0xf800) >> 6) |
1441 ((blue & 0xf800) >> 11);
1442 break;
1443 case 16:
1444 dinfo->pseudo_palette[regno] = (red & 0xf800) |
1445 ((green & 0xfc00) >> 5) |
1446 ((blue & 0xf800) >> 11);
1447 break;
1448 case 24:
1449 dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1450 (green & 0xff00) |
1451 ((blue & 0xff00) >> 8);
1452 break;
1453 }
1454 }
1455
1456 return 0;
1457 }
1458
1459 static int intelfb_blank(int blank, struct fb_info *info)
1460 {
1461 intelfbhw_do_blank(blank, info);
1462 return 0;
1463 }
1464
1465 static int intelfb_pan_display(struct fb_var_screeninfo *var,
1466 struct fb_info *info)
1467 {
1468 intelfbhw_pan_display(var, info);
1469 return 0;
1470 }
1471
1472 /* When/if we have our own ioctls. */
1473 static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1474 unsigned long arg)
1475 {
1476 int retval = 0;
1477 struct intelfb_info *dinfo = GET_DINFO(info);
1478 u32 pipe = 0;
1479
1480 switch (cmd) {
1481 case FBIO_WAITFORVSYNC:
1482 if (get_user(pipe, (__u32 __user *)arg))
1483 return -EFAULT;
1484
1485 retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1486 break;
1487 default:
1488 break;
1489 }
1490
1491 return retval;
1492 }
1493
1494 static void intelfb_fillrect (struct fb_info *info,
1495 const struct fb_fillrect *rect)
1496 {
1497 struct intelfb_info *dinfo = GET_DINFO(info);
1498 u32 rop, color;
1499
1500 #if VERBOSE > 0
1501 DBG_MSG("intelfb_fillrect\n");
1502 #endif
1503
1504 if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1505 cfb_fillrect(info, rect);
1506 return;
1507 }
1508
1509 if (rect->rop == ROP_COPY)
1510 rop = PAT_ROP_GXCOPY;
1511 else /* ROP_XOR */
1512 rop = PAT_ROP_GXXOR;
1513
1514 if (dinfo->depth != 8)
1515 color = dinfo->pseudo_palette[rect->color];
1516 else
1517 color = rect->color;
1518
1519 intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1520 rect->width, rect->height, color,
1521 dinfo->pitch, info->var.bits_per_pixel,
1522 rop);
1523 }
1524
1525 static void intelfb_copyarea(struct fb_info *info,
1526 const struct fb_copyarea *region)
1527 {
1528 struct intelfb_info *dinfo = GET_DINFO(info);
1529
1530 #if VERBOSE > 0
1531 DBG_MSG("intelfb_copyarea\n");
1532 #endif
1533
1534 if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1535 cfb_copyarea(info, region);
1536 return;
1537 }
1538
1539 intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1540 region->dy, region->width, region->height,
1541 dinfo->pitch, info->var.bits_per_pixel);
1542 }
1543
1544 static void intelfb_imageblit(struct fb_info *info,
1545 const struct fb_image *image)
1546 {
1547 struct intelfb_info *dinfo = GET_DINFO(info);
1548 u32 fgcolor, bgcolor;
1549
1550 #if VERBOSE > 0
1551 DBG_MSG("intelfb_imageblit\n");
1552 #endif
1553
1554 if (!ACCEL(dinfo, info) || dinfo->depth == 4
1555 || image->depth != 1) {
1556 cfb_imageblit(info, image);
1557 return;
1558 }
1559
1560 if (dinfo->depth != 8) {
1561 fgcolor = dinfo->pseudo_palette[image->fg_color];
1562 bgcolor = dinfo->pseudo_palette[image->bg_color];
1563 } else {
1564 fgcolor = image->fg_color;
1565 bgcolor = image->bg_color;
1566 }
1567
1568 if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1569 image->height, image->data,
1570 image->dx, image->dy,
1571 dinfo->pitch, info->var.bits_per_pixel)) {
1572 cfb_imageblit(info, image);
1573 return;
1574 }
1575 }
1576
1577 static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1578 {
1579 struct intelfb_info *dinfo = GET_DINFO(info);
1580 u32 physical;
1581 #if VERBOSE > 0
1582 DBG_MSG("intelfb_cursor\n");
1583 #endif
1584
1585 if (!dinfo->hwcursor)
1586 return -ENODEV;
1587
1588 intelfbhw_cursor_hide(dinfo);
1589
1590 /* If XFree killed the cursor - restore it */
1591 physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1592 (dinfo->cursor.offset << 12);
1593
1594 if (INREG(CURSOR_A_BASEADDR) != physical) {
1595 u32 fg, bg;
1596
1597 DBG_MSG("the cursor was killed - restore it !!\n");
1598 DBG_MSG("size %d, %d pos %d, %d\n",
1599 cursor->image.width, cursor->image.height,
1600 cursor->image.dx, cursor->image.dy);
1601
1602 intelfbhw_cursor_init(dinfo);
1603 intelfbhw_cursor_reset(dinfo);
1604 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1605 cursor->image.dy);
1606
1607 if (dinfo->depth != 8) {
1608 fg =dinfo->pseudo_palette[cursor->image.fg_color];
1609 bg =dinfo->pseudo_palette[cursor->image.bg_color];
1610 } else {
1611 fg = cursor->image.fg_color;
1612 bg = cursor->image.bg_color;
1613 }
1614 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1615 intelfbhw_cursor_load(dinfo, cursor->image.width,
1616 cursor->image.height,
1617 dinfo->cursor_src);
1618
1619 if (cursor->enable)
1620 intelfbhw_cursor_show(dinfo);
1621 return 0;
1622 }
1623
1624 if (cursor->set & FB_CUR_SETPOS) {
1625 u32 dx, dy;
1626
1627 dx = cursor->image.dx - info->var.xoffset;
1628 dy = cursor->image.dy - info->var.yoffset;
1629
1630 intelfbhw_cursor_setpos(dinfo, dx, dy);
1631 }
1632
1633 if (cursor->set & FB_CUR_SETSIZE) {
1634 if (cursor->image.width > 64 || cursor->image.height > 64)
1635 return -ENXIO;
1636
1637 intelfbhw_cursor_reset(dinfo);
1638 }
1639
1640 if (cursor->set & FB_CUR_SETCMAP) {
1641 u32 fg, bg;
1642
1643 if (dinfo->depth != 8) {
1644 fg = dinfo->pseudo_palette[cursor->image.fg_color];
1645 bg = dinfo->pseudo_palette[cursor->image.bg_color];
1646 } else {
1647 fg = cursor->image.fg_color;
1648 bg = cursor->image.bg_color;
1649 }
1650
1651 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1652 }
1653
1654 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1655 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1656 u32 size = s_pitch * cursor->image.height;
1657 u8 *dat = (u8 *) cursor->image.data;
1658 u8 *msk = (u8 *) cursor->mask;
1659 u8 src[64];
1660 u32 i;
1661
1662 if (cursor->image.depth != 1)
1663 return -ENXIO;
1664
1665 switch (cursor->rop) {
1666 case ROP_XOR:
1667 for (i = 0; i < size; i++)
1668 src[i] = dat[i] ^ msk[i];
1669 break;
1670 case ROP_COPY:
1671 default:
1672 for (i = 0; i < size; i++)
1673 src[i] = dat[i] & msk[i];
1674 break;
1675 }
1676
1677 /* save the bitmap to restore it when XFree will
1678 make the cursor dirty */
1679 memcpy(dinfo->cursor_src, src, size);
1680
1681 intelfbhw_cursor_load(dinfo, cursor->image.width,
1682 cursor->image.height, src);
1683 }
1684
1685 if (cursor->enable)
1686 intelfbhw_cursor_show(dinfo);
1687
1688 return 0;
1689 }
1690
1691 static int intelfb_sync(struct fb_info *info)
1692 {
1693 struct intelfb_info *dinfo = GET_DINFO(info);
1694
1695 #if VERBOSE > 0
1696 DBG_MSG("intelfb_sync\n");
1697 #endif
1698
1699 if (dinfo->ring_lockup)
1700 return 0;
1701
1702 intelfbhw_do_sync(dinfo);
1703 return 0;
1704 }
1705