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[ARM] pxa: Gumstix Verdex PCMCIA support
[linux-2.6/verdex.git] / drivers / video / intelfb / intelfbdrv.c
blob0cafd642fbc0f57b5eaee3fe85a60895c30e1d8d
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 int accel = 1;
234 static int vram = 4;
235 static int hwcursor = 0;
236 static int mtrr = 1;
237 static int fixed = 0;
238 static int noinit = 0;
239 static int noregister = 0;
240 static int probeonly = 0;
241 static int 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, bool, 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 return -ENODEV;
533 }
534
535 dinfo = info->par;
536 dinfo->info = info;
537 dinfo->fbops = &intel_fb_ops;
538 dinfo->pdev = pdev;
539
540 /* Reserve pixmap space. */
541 info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
542 if (info->pixmap.addr == NULL) {
543 ERR_MSG("Cannot reserve pixmap memory.\n");
544 goto err_out_pixmap;
545 }
546
547 /* set early this option because it could be changed by tv encoder
548 driver */
549 dinfo->fixed_mode = fixed;
550
551 /* Enable device. */
552 if ((err = pci_enable_device(pdev))) {
553 ERR_MSG("Cannot enable device.\n");
554 cleanup(dinfo);
555 return -ENODEV;
556 }
557
558 /* Set base addresses. */
559 if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
560 (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
561 (ent->device == PCI_DEVICE_ID_INTEL_945G) ||
562 (ent->device == PCI_DEVICE_ID_INTEL_945GM) ||
563 (ent->device == PCI_DEVICE_ID_INTEL_945GME) ||
564 (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
565 (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
566
567 aperture_bar = 2;
568 mmio_bar = 0;
569 }
570 dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
571 dinfo->aperture.size = pci_resource_len(pdev, aperture_bar);
572 dinfo->mmio_base_phys = pci_resource_start(pdev, mmio_bar);
573 DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
574 (unsigned long long)pci_resource_start(pdev, aperture_bar),
575 (unsigned long long)pci_resource_len(pdev, aperture_bar),
576 (unsigned long long)pci_resource_start(pdev, mmio_bar),
577 (unsigned long long)pci_resource_len(pdev, mmio_bar));
578
579 /* Reserve the fb and MMIO regions */
580 if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
581 INTELFB_MODULE_NAME)) {
582 ERR_MSG("Cannot reserve FB region.\n");
583 cleanup(dinfo);
584 return -ENODEV;
585 }
586
587 dinfo->flag |= INTELFB_FB_ACQUIRED;
588
589 if (!request_mem_region(dinfo->mmio_base_phys,
590 INTEL_REG_SIZE,
591 INTELFB_MODULE_NAME)) {
592 ERR_MSG("Cannot reserve MMIO region.\n");
593 cleanup(dinfo);
594 return -ENODEV;
595 }
596
597 dinfo->flag |= INTELFB_MMIO_ACQUIRED;
598
599 /* Get the chipset info. */
600 dinfo->pci_chipset = pdev->device;
601
602 if (intelfbhw_get_chipset(pdev, dinfo)) {
603 cleanup(dinfo);
604 return -ENODEV;
605 }
606
607 if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
608 cleanup(dinfo);
609 return -ENODEV;
610 }
611
612 INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
613 "stolen memory %dkB\n",
614 pdev->bus->number, PCI_SLOT(pdev->devfn),
615 PCI_FUNC(pdev->devfn), dinfo->name,
616 BtoMB(aperture_size), BtoKB(stolen_size));
617
618 /* Set these from the options. */
619 dinfo->accel = accel;
620 dinfo->hwcursor = hwcursor;
621
622 if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
623 INF_MSG("Acceleration is not supported for the %s chipset.\n",
624 dinfo->name);
625 dinfo->accel = 0;
626 }
627
628 /* Framebuffer parameters - Use all the stolen memory if >= vram */
629 if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
630 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
631 dinfo->fbmem_gart = 0;
632 } else {
633 dinfo->fb.size = MB(vram);
634 dinfo->fbmem_gart = 1;
635 }
636
637 /* Allocate space for the ring buffer and HW cursor if enabled. */
638 if (dinfo->accel) {
639 dinfo->ring.size = RINGBUFFER_SIZE;
640 dinfo->ring_tail_mask = dinfo->ring.size - 1;
641 }
642 if (dinfo->hwcursor)
643 dinfo->cursor.size = HW_CURSOR_SIZE;
644
645 /* Use agpgart to manage the GATT */
646 if (!(bridge = agp_backend_acquire(pdev))) {
647 ERR_MSG("cannot acquire agp\n");
648 cleanup(dinfo);
649 return -ENODEV;
650 }
651
652 /* get the current gatt info */
653 if (agp_copy_info(bridge, &gtt_info)) {
654 ERR_MSG("cannot get agp info\n");
655 agp_backend_release(bridge);
656 cleanup(dinfo);
657 return -ENODEV;
658 }
659
660 if (MB(voffset) < stolen_size)
661 offset = (stolen_size >> 12);
662 else
663 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
664
665 /* set the mem offsets - set them after the already used pages */
666 if (dinfo->accel)
667 dinfo->ring.offset = offset + gtt_info.current_memory;
668 if (dinfo->hwcursor)
669 dinfo->cursor.offset = offset +
670 + gtt_info.current_memory + (dinfo->ring.size >> 12);
671 if (dinfo->fbmem_gart)
672 dinfo->fb.offset = offset +
673 + gtt_info.current_memory + (dinfo->ring.size >> 12)
674 + (dinfo->cursor.size >> 12);
675
676 /* Allocate memories (which aren't stolen) */
677 /* Map the fb and MMIO regions */
678 /* ioremap only up to the end of used aperture */
679 dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
680 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
681 + dinfo->fb.size);
682 if (!dinfo->aperture.virtual) {
683 ERR_MSG("Cannot remap FB region.\n");
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 cleanup(dinfo);
694 return -ENODEV;
695 }
696
697 if (dinfo->accel) {
698 if (!(dinfo->gtt_ring_mem =
699 agp_allocate_memory(bridge, dinfo->ring.size >> 12,
700 AGP_NORMAL_MEMORY))) {
701 ERR_MSG("cannot allocate ring buffer memory\n");
702 agp_backend_release(bridge);
703 cleanup(dinfo);
704 return -ENOMEM;
705 }
706 if (agp_bind_memory(dinfo->gtt_ring_mem,
707 dinfo->ring.offset)) {
708 ERR_MSG("cannot bind ring buffer memory\n");
709 agp_backend_release(bridge);
710 cleanup(dinfo);
711 return -EBUSY;
712 }
713 dinfo->ring.physical = dinfo->aperture.physical
714 + (dinfo->ring.offset << 12);
715 dinfo->ring.virtual = dinfo->aperture.virtual
716 + (dinfo->ring.offset << 12);
717 dinfo->ring_head = 0;
718 }
719 if (dinfo->hwcursor) {
720 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
721 : AGP_NORMAL_MEMORY;
722 if (!(dinfo->gtt_cursor_mem =
723 agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
724 agp_memtype))) {
725 ERR_MSG("cannot allocate cursor memory\n");
726 agp_backend_release(bridge);
727 cleanup(dinfo);
728 return -ENOMEM;
729 }
730 if (agp_bind_memory(dinfo->gtt_cursor_mem,
731 dinfo->cursor.offset)) {
732 ERR_MSG("cannot bind cursor memory\n");
733 agp_backend_release(bridge);
734 cleanup(dinfo);
735 return -EBUSY;
736 }
737 if (dinfo->mobile)
738 dinfo->cursor.physical
739 = dinfo->gtt_cursor_mem->physical;
740 else
741 dinfo->cursor.physical = dinfo->aperture.physical
742 + (dinfo->cursor.offset << 12);
743 dinfo->cursor.virtual = dinfo->aperture.virtual
744 + (dinfo->cursor.offset << 12);
745 }
746 if (dinfo->fbmem_gart) {
747 if (!(dinfo->gtt_fb_mem =
748 agp_allocate_memory(bridge, dinfo->fb.size >> 12,
749 AGP_NORMAL_MEMORY))) {
750 WRN_MSG("cannot allocate framebuffer memory - use "
751 "the stolen one\n");
752 dinfo->fbmem_gart = 0;
753 }
754 if (agp_bind_memory(dinfo->gtt_fb_mem,
755 dinfo->fb.offset)) {
756 WRN_MSG("cannot bind framebuffer memory - use "
757 "the stolen one\n");
758 dinfo->fbmem_gart = 0;
759 }
760 }
761
762 /* update framebuffer memory parameters */
763 if (!dinfo->fbmem_gart)
764 dinfo->fb.offset = 0; /* starts at offset 0 */
765 dinfo->fb.physical = dinfo->aperture.physical
766 + (dinfo->fb.offset << 12);
767 dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
768 dinfo->fb_start = dinfo->fb.offset << 12;
769
770 /* release agpgart */
771 agp_backend_release(bridge);
772
773 if (mtrr)
774 set_mtrr(dinfo);
775
776 DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
777 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
778 dinfo->fb.virtual);
779 DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
780 dinfo->mmio_base_phys, INTEL_REG_SIZE,
781 dinfo->mmio_base);
782 DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
783 dinfo->ring.physical, dinfo->ring.size,
784 dinfo->ring.virtual);
785 DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
786 dinfo->cursor.physical, dinfo->cursor.size,
787 dinfo->cursor.virtual, dinfo->cursor.offset,
788 dinfo->cursor.physical);
789
790 DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
791 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
792 DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
793
794 if (probeonly)
795 bailout(dinfo);
796
797 /*
798 * Check if the LVDS port or any DVO ports are enabled. If so,
799 * don't allow mode switching
800 */
801 dvo = intelfbhw_check_non_crt(dinfo);
802 if (dvo) {
803 dinfo->fixed_mode = 1;
804 WRN_MSG("Non-CRT device is enabled ( ");
805 i = 0;
806 while (dvo) {
807 if (dvo & 1) {
808 s = intelfbhw_dvo_to_string(1 << i);
809 if (s)
810 printk("%s ", s);
811 }
812 dvo >>= 1;
813 ++i;
814 }
815 printk("). Disabling mode switching.\n");
816 }
817
818 if (bailearly == 1)
819 bailout(dinfo);
820
821 if (FIXED_MODE(dinfo) &&
822 screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
823 ERR_MSG("Video mode must be programmed at boot time.\n");
824 cleanup(dinfo);
825 return -ENODEV;
826 }
827
828 if (bailearly == 2)
829 bailout(dinfo);
830
831 /* Initialise dinfo and related data. */
832 /* If an initial mode was programmed at boot time, get its details. */
833 if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
834 get_initial_mode(dinfo);
835
836 if (bailearly == 3)
837 bailout(dinfo);
838
839 if (FIXED_MODE(dinfo)) /* remap fb address */
840 update_dinfo(dinfo, &dinfo->initial_var);
841
842 if (bailearly == 4)
843 bailout(dinfo);
844
845
846 if (intelfb_set_fbinfo(dinfo)) {
847 cleanup(dinfo);
848 return -ENODEV;
849 }
850
851 if (bailearly == 5)
852 bailout(dinfo);
853
854 #ifdef CONFIG_FB_INTEL_I2C
855 /* register I2C bus */
856 intelfb_create_i2c_busses(dinfo);
857 #endif
858
859 if (bailearly == 6)
860 bailout(dinfo);
861
862 pci_set_drvdata(pdev, dinfo);
863
864 /* Save the initial register state. */
865 i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
866 bailearly > 6 ? bailearly - 6 : 0);
867 if (i != 0) {
868 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
869 bailout(dinfo);
870 }
871
872 intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
873
874 if (bailearly == 18)
875 bailout(dinfo);
876
877 /* Cursor initialisation */
878 if (dinfo->hwcursor) {
879 intelfbhw_cursor_init(dinfo);
880 intelfbhw_cursor_reset(dinfo);
881 }
882
883 if (bailearly == 19)
884 bailout(dinfo);
885
886 /* 2d acceleration init */
887 if (dinfo->accel)
888 intelfbhw_2d_start(dinfo);
889
890 if (bailearly == 20)
891 bailout(dinfo);
892
893 if (noregister)
894 bailout(dinfo);
895
896 if (register_framebuffer(dinfo->info) < 0) {
897 ERR_MSG("Cannot register framebuffer.\n");
898 cleanup(dinfo);
899 return -ENODEV;
900 }
901
902 dinfo->registered = 1;
903 dinfo->open = 0;
904
905 init_waitqueue_head(&dinfo->vsync.wait);
906 spin_lock_init(&dinfo->int_lock);
907 dinfo->irq_flags = 0;
908 dinfo->vsync.pan_display = 0;
909 dinfo->vsync.pan_offset = 0;
910
911 return 0;
912
913 err_out_pixmap:
914 fb_dealloc_cmap(&info->cmap);
915 err_out_cmap:
916 framebuffer_release(info);
917 return -ENODEV;
918 }
919
920 static void __devexit
921 intelfb_pci_unregister(struct pci_dev *pdev)
922 {
923 struct intelfb_info *dinfo = pci_get_drvdata(pdev);
924
925 DBG_MSG("intelfb_pci_unregister\n");
926
927 if (!dinfo)
928 return;
929
930 cleanup(dinfo);
931
932 pci_set_drvdata(pdev, NULL);
933 }
934
935 /***************************************************************
936 * helper functions *
937 ***************************************************************/
938
939 int __inline__ intelfb_var_to_depth(const struct fb_var_screeninfo *var)
940 {
941 DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
942 var->bits_per_pixel, var->green.length);
943
944 switch (var->bits_per_pixel) {
945 case 16:
946 return (var->green.length == 6) ? 16 : 15;
947 case 32:
948 return 24;
949 default:
950 return var->bits_per_pixel;
951 }
952 }
953
954
955 static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
956 {
957 int xtot = var->xres + var->left_margin + var->right_margin +
958 var->hsync_len;
959 int ytot = var->yres + var->upper_margin + var->lower_margin +
960 var->vsync_len;
961
962 return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
963 }
964
965 /***************************************************************
966 * Various intialisation functions *
967 ***************************************************************/
968
969 static void __devinit get_initial_mode(struct intelfb_info *dinfo)
970 {
971 struct fb_var_screeninfo *var;
972 int xtot, ytot;
973
974 DBG_MSG("get_initial_mode\n");
975
976 dinfo->initial_vga = 1;
977 dinfo->initial_fb_base = screen_info.lfb_base;
978 dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
979 dinfo->initial_pitch = screen_info.lfb_linelength;
980
981 var = &dinfo->initial_var;
982 memset(var, 0, sizeof(*var));
983 var->xres = screen_info.lfb_width;
984 var->yres = screen_info.lfb_height;
985 var->bits_per_pixel = screen_info.lfb_depth;
986 switch (screen_info.lfb_depth) {
987 case 15:
988 var->bits_per_pixel = 16;
989 break;
990 case 24:
991 var->bits_per_pixel = 32;
992 break;
993 }
994
995 DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
996 dinfo->initial_fb_base, dinfo->initial_video_ram,
997 BtoKB(dinfo->initial_video_ram));
998
999 DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
1000 var->xres, var->yres, var->bits_per_pixel,
1001 dinfo->initial_pitch);
1002
1003 /* Dummy timing values (assume 60Hz) */
1004 var->left_margin = (var->xres / 8) & 0xf8;
1005 var->right_margin = 32;
1006 var->upper_margin = 16;
1007 var->lower_margin = 4;
1008 var->hsync_len = (var->xres / 8) & 0xf8;
1009 var->vsync_len = 4;
1010
1011 xtot = var->xres + var->left_margin +
1012 var->right_margin + var->hsync_len;
1013 ytot = var->yres + var->upper_margin +
1014 var->lower_margin + var->vsync_len;
1015 var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1016
1017 var->height = -1;
1018 var->width = -1;
1019
1020 if (var->bits_per_pixel > 8) {
1021 var->red.offset = screen_info.red_pos;
1022 var->red.length = screen_info.red_size;
1023 var->green.offset = screen_info.green_pos;
1024 var->green.length = screen_info.green_size;
1025 var->blue.offset = screen_info.blue_pos;
1026 var->blue.length = screen_info.blue_size;
1027 var->transp.offset = screen_info.rsvd_pos;
1028 var->transp.length = screen_info.rsvd_size;
1029 } else {
1030 var->red.length = 8;
1031 var->green.length = 8;
1032 var->blue.length = 8;
1033 }
1034 }
1035
1036 static int __devinit intelfb_init_var(struct intelfb_info *dinfo)
1037 {
1038 struct fb_var_screeninfo *var;
1039 int msrc = 0;
1040
1041 DBG_MSG("intelfb_init_var\n");
1042
1043 var = &dinfo->info->var;
1044 if (FIXED_MODE(dinfo)) {
1045 memcpy(var, &dinfo->initial_var,
1046 sizeof(struct fb_var_screeninfo));
1047 msrc = 5;
1048 } else {
1049 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1050 u8 *edid_d = NULL;
1051
1052 if (edid_s) {
1053 edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1054
1055 if (edid_d) {
1056 fb_edid_to_monspecs(edid_d,
1057 &dinfo->info->monspecs);
1058 kfree(edid_d);
1059 }
1060 }
1061
1062 if (mode) {
1063 printk("intelfb: Looking for mode in private "
1064 "database\n");
1065 msrc = fb_find_mode(var, dinfo->info, mode,
1066 dinfo->info->monspecs.modedb,
1067 dinfo->info->monspecs.modedb_len,
1068 NULL, 0);
1069
1070 if (msrc && msrc > 1) {
1071 printk("intelfb: No mode in private database, "
1072 "intelfb: looking for mode in global "
1073 "database ");
1074 msrc = fb_find_mode(var, dinfo->info, mode,
1075 NULL, 0, NULL, 0);
1076
1077 if (msrc)
1078 msrc |= 8;
1079 }
1080
1081 }
1082
1083 if (!msrc)
1084 msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1085 NULL, 0, NULL, 0);
1086 }
1087
1088 if (!msrc) {
1089 ERR_MSG("Cannot find a suitable video mode.\n");
1090 return 1;
1091 }
1092
1093 INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1094 var->bits_per_pixel, var_to_refresh(var));
1095
1096 DBG_MSG("Initial video mode is from %d.\n", msrc);
1097
1098 #if ALLOCATE_FOR_PANNING
1099 /* Allow use of half of the video ram for panning */
1100 var->xres_virtual = var->xres;
1101 var->yres_virtual =
1102 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1103 if (var->yres_virtual < var->yres)
1104 var->yres_virtual = var->yres;
1105 #else
1106 var->yres_virtual = var->yres;
1107 #endif
1108
1109 if (dinfo->accel)
1110 var->accel_flags |= FB_ACCELF_TEXT;
1111 else
1112 var->accel_flags &= ~FB_ACCELF_TEXT;
1113
1114 return 0;
1115 }
1116
1117 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo)
1118 {
1119 struct fb_info *info = dinfo->info;
1120
1121 DBG_MSG("intelfb_set_fbinfo\n");
1122
1123 info->flags = FBINFO_FLAG_DEFAULT;
1124 info->fbops = &intel_fb_ops;
1125 info->pseudo_palette = dinfo->pseudo_palette;
1126
1127 info->pixmap.size = 64*1024;
1128 info->pixmap.buf_align = 8;
1129 info->pixmap.access_align = 32;
1130 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1131
1132 if (intelfb_init_var(dinfo))
1133 return 1;
1134
1135 info->pixmap.scan_align = 1;
1136 strcpy(info->fix.id, dinfo->name);
1137 info->fix.smem_start = dinfo->fb.physical;
1138 info->fix.smem_len = dinfo->fb.size;
1139 info->fix.type = FB_TYPE_PACKED_PIXELS;
1140 info->fix.type_aux = 0;
1141 info->fix.xpanstep = 8;
1142 info->fix.ypanstep = 1;
1143 info->fix.ywrapstep = 0;
1144 info->fix.mmio_start = dinfo->mmio_base_phys;
1145 info->fix.mmio_len = INTEL_REG_SIZE;
1146 info->fix.accel = FB_ACCEL_I830;
1147 update_dinfo(dinfo, &info->var);
1148
1149 return 0;
1150 }
1151
1152 /* Update dinfo to match the active video mode. */
1153 static void update_dinfo(struct intelfb_info *dinfo,
1154 struct fb_var_screeninfo *var)
1155 {
1156 DBG_MSG("update_dinfo\n");
1157
1158 dinfo->bpp = var->bits_per_pixel;
1159 dinfo->depth = intelfb_var_to_depth(var);
1160 dinfo->xres = var->xres;
1161 dinfo->yres = var->xres;
1162 dinfo->pixclock = var->pixclock;
1163
1164 dinfo->info->fix.visual = dinfo->visual;
1165 dinfo->info->fix.line_length = dinfo->pitch;
1166
1167 switch (dinfo->bpp) {
1168 case 8:
1169 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1170 dinfo->pitch = var->xres_virtual;
1171 break;
1172 case 16:
1173 dinfo->visual = FB_VISUAL_TRUECOLOR;
1174 dinfo->pitch = var->xres_virtual * 2;
1175 break;
1176 case 32:
1177 dinfo->visual = FB_VISUAL_TRUECOLOR;
1178 dinfo->pitch = var->xres_virtual * 4;
1179 break;
1180 }
1181
1182 /* Make sure the line length is a aligned correctly. */
1183 if (IS_I9XX(dinfo))
1184 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1185 else
1186 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1187
1188 if (FIXED_MODE(dinfo))
1189 dinfo->pitch = dinfo->initial_pitch;
1190
1191 dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1192 dinfo->info->fix.line_length = dinfo->pitch;
1193 dinfo->info->fix.visual = dinfo->visual;
1194 }
1195
1196 /* fbops functions */
1197
1198 /***************************************************************
1199 * fbdev interface *
1200 ***************************************************************/
1201
1202 static int intelfb_open(struct fb_info *info, int user)
1203 {
1204 struct intelfb_info *dinfo = GET_DINFO(info);
1205
1206 if (user)
1207 dinfo->open++;
1208
1209 return 0;
1210 }
1211
1212 static int intelfb_release(struct fb_info *info, int user)
1213 {
1214 struct intelfb_info *dinfo = GET_DINFO(info);
1215
1216 if (user) {
1217 dinfo->open--;
1218 msleep(1);
1219 if (!dinfo->open)
1220 intelfbhw_disable_irq(dinfo);
1221 }
1222
1223 return 0;
1224 }
1225
1226 static int intelfb_check_var(struct fb_var_screeninfo *var,
1227 struct fb_info *info)
1228 {
1229 int change_var = 0;
1230 struct fb_var_screeninfo v;
1231 struct intelfb_info *dinfo;
1232 static int first = 1;
1233 int i;
1234 /* Good pitches to allow tiling. Don't care about pitches < 1024. */
1235 static const int pitches[] = {
1236 128 * 8,
1237 128 * 16,
1238 128 * 32,
1239 128 * 64,
1240 0
1241 };
1242
1243 DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1244
1245 dinfo = GET_DINFO(info);
1246
1247 /* update the pitch */
1248 if (intelfbhw_validate_mode(dinfo, var) != 0)
1249 return -EINVAL;
1250
1251 v = *var;
1252
1253 for (i = 0; pitches[i] != 0; i++) {
1254 if (pitches[i] >= v.xres_virtual) {
1255 v.xres_virtual = pitches[i];
1256 break;
1257 }
1258 }
1259
1260 /* Check for a supported bpp. */
1261 if (v.bits_per_pixel <= 8)
1262 v.bits_per_pixel = 8;
1263 else if (v.bits_per_pixel <= 16) {
1264 if (v.bits_per_pixel == 16)
1265 v.green.length = 6;
1266 v.bits_per_pixel = 16;
1267 } else if (v.bits_per_pixel <= 32)
1268 v.bits_per_pixel = 32;
1269 else
1270 return -EINVAL;
1271
1272 change_var = ((info->var.xres != var->xres) ||
1273 (info->var.yres != var->yres) ||
1274 (info->var.xres_virtual != var->xres_virtual) ||
1275 (info->var.yres_virtual != var->yres_virtual) ||
1276 (info->var.bits_per_pixel != var->bits_per_pixel) ||
1277 memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1278 memcmp(&info->var.green, &var->green,
1279 sizeof(var->green)) ||
1280 memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1281
1282 if (FIXED_MODE(dinfo) &&
1283 (change_var ||
1284 var->yres_virtual > dinfo->initial_var.yres_virtual ||
1285 var->yres_virtual < dinfo->initial_var.yres ||
1286 var->xoffset || var->nonstd)) {
1287 if (first) {
1288 ERR_MSG("Changing the video mode is not supported.\n");
1289 first = 0;
1290 }
1291 return -EINVAL;
1292 }
1293
1294 switch (intelfb_var_to_depth(&v)) {
1295 case 8:
1296 v.red.offset = v.green.offset = v.blue.offset = 0;
1297 v.red.length = v.green.length = v.blue.length = 8;
1298 v.transp.offset = v.transp.length = 0;
1299 break;
1300 case 15:
1301 v.red.offset = 10;
1302 v.green.offset = 5;
1303 v.blue.offset = 0;
1304 v.red.length = v.green.length = v.blue.length = 5;
1305 v.transp.offset = v.transp.length = 0;
1306 break;
1307 case 16:
1308 v.red.offset = 11;
1309 v.green.offset = 5;
1310 v.blue.offset = 0;
1311 v.red.length = 5;
1312 v.green.length = 6;
1313 v.blue.length = 5;
1314 v.transp.offset = v.transp.length = 0;
1315 break;
1316 case 24:
1317 v.red.offset = 16;
1318 v.green.offset = 8;
1319 v.blue.offset = 0;
1320 v.red.length = v.green.length = v.blue.length = 8;
1321 v.transp.offset = v.transp.length = 0;
1322 break;
1323 case 32:
1324 v.red.offset = 16;
1325 v.green.offset = 8;
1326 v.blue.offset = 0;
1327 v.red.length = v.green.length = v.blue.length = 8;
1328 v.transp.offset = 24;
1329 v.transp.length = 8;
1330 break;
1331 }
1332
1333 if (v.xoffset < 0)
1334 v.xoffset = 0;
1335 if (v.yoffset < 0)
1336 v.yoffset = 0;
1337
1338 if (v.xoffset > v.xres_virtual - v.xres)
1339 v.xoffset = v.xres_virtual - v.xres;
1340 if (v.yoffset > v.yres_virtual - v.yres)
1341 v.yoffset = v.yres_virtual - v.yres;
1342
1343 v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1344 v.transp.msb_right = 0;
1345
1346 *var = v;
1347
1348 return 0;
1349 }
1350
1351 static int intelfb_set_par(struct fb_info *info)
1352 {
1353 struct intelfb_hwstate *hw;
1354 struct intelfb_info *dinfo = GET_DINFO(info);
1355
1356 if (FIXED_MODE(dinfo)) {
1357 ERR_MSG("Changing the video mode is not supported.\n");
1358 return -EINVAL;
1359 }
1360
1361 hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1362 if (!hw)
1363 return -ENOMEM;
1364
1365 DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1366 info->var.yres, info->var.bits_per_pixel);
1367
1368 /*
1369 * Disable VCO prior to timing register change.
1370 */
1371 OUTREG(DPLL_A, INREG(DPLL_A) & ~DPLL_VCO_ENABLE);
1372
1373 intelfb_blank(FB_BLANK_POWERDOWN, info);
1374
1375 if (ACCEL(dinfo, info))
1376 intelfbhw_2d_stop(dinfo);
1377
1378 memcpy(hw, &dinfo->save_state, sizeof(*hw));
1379 if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1380 goto invalid_mode;
1381 if (intelfbhw_program_mode(dinfo, hw, 0))
1382 goto invalid_mode;
1383
1384 #if REGDUMP > 0
1385 intelfbhw_read_hw_state(dinfo, hw, 0);
1386 intelfbhw_print_hw_state(dinfo, hw);
1387 #endif
1388
1389 update_dinfo(dinfo, &info->var);
1390
1391 if (ACCEL(dinfo, info))
1392 intelfbhw_2d_start(dinfo);
1393
1394 intelfb_pan_display(&info->var, info);
1395
1396 intelfb_blank(FB_BLANK_UNBLANK, info);
1397
1398 if (ACCEL(dinfo, info)) {
1399 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1400 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1401 FBINFO_HWACCEL_IMAGEBLIT;
1402 } else
1403 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1404
1405 kfree(hw);
1406 return 0;
1407 invalid_mode:
1408 kfree(hw);
1409 return -EINVAL;
1410 }
1411
1412 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1413 unsigned blue, unsigned transp,
1414 struct fb_info *info)
1415 {
1416 struct intelfb_info *dinfo = GET_DINFO(info);
1417
1418 #if VERBOSE > 0
1419 DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1420 #endif
1421
1422 if (regno > 255)
1423 return 1;
1424
1425 if (dinfo->depth == 8) {
1426 red >>= 8;
1427 green >>= 8;
1428 blue >>= 8;
1429
1430 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1431 transp);
1432 }
1433
1434 if (regno < 16) {
1435 switch (dinfo->depth) {
1436 case 15:
1437 dinfo->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
1438 ((green & 0xf800) >> 6) |
1439 ((blue & 0xf800) >> 11);
1440 break;
1441 case 16:
1442 dinfo->pseudo_palette[regno] = (red & 0xf800) |
1443 ((green & 0xfc00) >> 5) |
1444 ((blue & 0xf800) >> 11);
1445 break;
1446 case 24:
1447 dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1448 (green & 0xff00) |
1449 ((blue & 0xff00) >> 8);
1450 break;
1451 }
1452 }
1453
1454 return 0;
1455 }
1456
1457 static int intelfb_blank(int blank, struct fb_info *info)
1458 {
1459 intelfbhw_do_blank(blank, info);
1460 return 0;
1461 }
1462
1463 static int intelfb_pan_display(struct fb_var_screeninfo *var,
1464 struct fb_info *info)
1465 {
1466 intelfbhw_pan_display(var, info);
1467 return 0;
1468 }
1469
1470 /* When/if we have our own ioctls. */
1471 static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1472 unsigned long arg)
1473 {
1474 int retval = 0;
1475 struct intelfb_info *dinfo = GET_DINFO(info);
1476 u32 pipe = 0;
1477
1478 switch (cmd) {
1479 case FBIO_WAITFORVSYNC:
1480 if (get_user(pipe, (__u32 __user *)arg))
1481 return -EFAULT;
1482
1483 retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1484 break;
1485 default:
1486 break;
1487 }
1488
1489 return retval;
1490 }
1491
1492 static void intelfb_fillrect (struct fb_info *info,
1493 const struct fb_fillrect *rect)
1494 {
1495 struct intelfb_info *dinfo = GET_DINFO(info);
1496 u32 rop, color;
1497
1498 #if VERBOSE > 0
1499 DBG_MSG("intelfb_fillrect\n");
1500 #endif
1501
1502 if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1503 cfb_fillrect(info, rect);
1504 return;
1505 }
1506
1507 if (rect->rop == ROP_COPY)
1508 rop = PAT_ROP_GXCOPY;
1509 else /* ROP_XOR */
1510 rop = PAT_ROP_GXXOR;
1511
1512 if (dinfo->depth != 8)
1513 color = dinfo->pseudo_palette[rect->color];
1514 else
1515 color = rect->color;
1516
1517 intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1518 rect->width, rect->height, color,
1519 dinfo->pitch, info->var.bits_per_pixel,
1520 rop);
1521 }
1522
1523 static void intelfb_copyarea(struct fb_info *info,
1524 const struct fb_copyarea *region)
1525 {
1526 struct intelfb_info *dinfo = GET_DINFO(info);
1527
1528 #if VERBOSE > 0
1529 DBG_MSG("intelfb_copyarea\n");
1530 #endif
1531
1532 if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1533 cfb_copyarea(info, region);
1534 return;
1535 }
1536
1537 intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1538 region->dy, region->width, region->height,
1539 dinfo->pitch, info->var.bits_per_pixel);
1540 }
1541
1542 static void intelfb_imageblit(struct fb_info *info,
1543 const struct fb_image *image)
1544 {
1545 struct intelfb_info *dinfo = GET_DINFO(info);
1546 u32 fgcolor, bgcolor;
1547
1548 #if VERBOSE > 0
1549 DBG_MSG("intelfb_imageblit\n");
1550 #endif
1551
1552 if (!ACCEL(dinfo, info) || dinfo->depth == 4
1553 || image->depth != 1) {
1554 cfb_imageblit(info, image);
1555 return;
1556 }
1557
1558 if (dinfo->depth != 8) {
1559 fgcolor = dinfo->pseudo_palette[image->fg_color];
1560 bgcolor = dinfo->pseudo_palette[image->bg_color];
1561 } else {
1562 fgcolor = image->fg_color;
1563 bgcolor = image->bg_color;
1564 }
1565
1566 if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1567 image->height, image->data,
1568 image->dx, image->dy,
1569 dinfo->pitch, info->var.bits_per_pixel)) {
1570 cfb_imageblit(info, image);
1571 return;
1572 }
1573 }
1574
1575 static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1576 {
1577 struct intelfb_info *dinfo = GET_DINFO(info);
1578 u32 physical;
1579 #if VERBOSE > 0
1580 DBG_MSG("intelfb_cursor\n");
1581 #endif
1582
1583 if (!dinfo->hwcursor)
1584 return -ENODEV;
1585
1586 intelfbhw_cursor_hide(dinfo);
1587
1588 /* If XFree killed the cursor - restore it */
1589 physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1590 (dinfo->cursor.offset << 12);
1591
1592 if (INREG(CURSOR_A_BASEADDR) != physical) {
1593 u32 fg, bg;
1594
1595 DBG_MSG("the cursor was killed - restore it !!\n");
1596 DBG_MSG("size %d, %d pos %d, %d\n",
1597 cursor->image.width, cursor->image.height,
1598 cursor->image.dx, cursor->image.dy);
1599
1600 intelfbhw_cursor_init(dinfo);
1601 intelfbhw_cursor_reset(dinfo);
1602 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1603 cursor->image.dy);
1604
1605 if (dinfo->depth != 8) {
1606 fg =dinfo->pseudo_palette[cursor->image.fg_color];
1607 bg =dinfo->pseudo_palette[cursor->image.bg_color];
1608 } else {
1609 fg = cursor->image.fg_color;
1610 bg = cursor->image.bg_color;
1611 }
1612 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1613 intelfbhw_cursor_load(dinfo, cursor->image.width,
1614 cursor->image.height,
1615 dinfo->cursor_src);
1616
1617 if (cursor->enable)
1618 intelfbhw_cursor_show(dinfo);
1619 return 0;
1620 }
1621
1622 if (cursor->set & FB_CUR_SETPOS) {
1623 u32 dx, dy;
1624
1625 dx = cursor->image.dx - info->var.xoffset;
1626 dy = cursor->image.dy - info->var.yoffset;
1627
1628 intelfbhw_cursor_setpos(dinfo, dx, dy);
1629 }
1630
1631 if (cursor->set & FB_CUR_SETSIZE) {
1632 if (cursor->image.width > 64 || cursor->image.height > 64)
1633 return -ENXIO;
1634
1635 intelfbhw_cursor_reset(dinfo);
1636 }
1637
1638 if (cursor->set & FB_CUR_SETCMAP) {
1639 u32 fg, bg;
1640
1641 if (dinfo->depth != 8) {
1642 fg = dinfo->pseudo_palette[cursor->image.fg_color];
1643 bg = dinfo->pseudo_palette[cursor->image.bg_color];
1644 } else {
1645 fg = cursor->image.fg_color;
1646 bg = cursor->image.bg_color;
1647 }
1648
1649 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1650 }
1651
1652 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1653 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1654 u32 size = s_pitch * cursor->image.height;
1655 u8 *dat = (u8 *) cursor->image.data;
1656 u8 *msk = (u8 *) cursor->mask;
1657 u8 src[64];
1658 u32 i;
1659
1660 if (cursor->image.depth != 1)
1661 return -ENXIO;
1662
1663 switch (cursor->rop) {
1664 case ROP_XOR:
1665 for (i = 0; i < size; i++)
1666 src[i] = dat[i] ^ msk[i];
1667 break;
1668 case ROP_COPY:
1669 default:
1670 for (i = 0; i < size; i++)
1671 src[i] = dat[i] & msk[i];
1672 break;
1673 }
1674
1675 /* save the bitmap to restore it when XFree will
1676 make the cursor dirty */
1677 memcpy(dinfo->cursor_src, src, size);
1678
1679 intelfbhw_cursor_load(dinfo, cursor->image.width,
1680 cursor->image.height, src);
1681 }
1682
1683 if (cursor->enable)
1684 intelfbhw_cursor_show(dinfo);
1685
1686 return 0;
1687 }
1688
1689 static int intelfb_sync(struct fb_info *info)
1690 {
1691 struct intelfb_info *dinfo = GET_DINFO(info);
1692
1693 #if VERBOSE > 0
1694 DBG_MSG("intelfb_sync\n");
1695 #endif
1696
1697 if (dinfo->ring_lockup)
1698 return 0;
1699
1700 intelfbhw_do_sync(dinfo);
1701 return 0;
1702 }
1703
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