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[PATCH] intelfb: Fix buffer overrun
[deliverable/linux.git] / drivers / video / intelfb / intelfbdrv.c
1 /*
2 * intelfb
3 *
4 * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM
5 * integrated graphics chips.
6 *
7 * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org>
8 * 2004 Sylvain Meyer
9 *
10 * This driver consists of two parts. The first part (intelfbdrv.c) provides
11 * the basic fbdev interfaces, is derived in part from the radeonfb and
12 * vesafb drivers, and is covered by the GPL. The second part (intelfbhw.c)
13 * provides the code to program the hardware. Most of it is derived from
14 * the i810/i830 XFree86 driver. The HW-specific code is covered here
15 * under a dual license (GPL and MIT/XFree86 license).
16 *
17 * Author: David Dawes
18 *
19 */
20
21 /* $DHD: intelfb/intelfbdrv.c,v 1.20 2003/06/27 15:17:40 dawes Exp $ */
22
23 /*
24 * Changes:
25 * 01/2003 - Initial driver (0.1.0), no mode switching, no acceleration.
26 * This initial version is a basic core that works a lot like
27 * the vesafb driver. It must be built-in to the kernel,
28 * and the initial video mode must be set with vga=XXX at
29 * boot time. (David Dawes)
30 *
31 * 01/2003 - Version 0.2.0: Mode switching added, colormap support
32 * implemented, Y panning, and soft screen blanking implemented.
33 * No acceleration yet. (David Dawes)
34 *
35 * 01/2003 - Version 0.3.0: fbcon acceleration support added. Module
36 * option handling added. (David Dawes)
37 *
38 * 01/2003 - Version 0.4.0: fbcon HW cursor support added. (David Dawes)
39 *
40 * 01/2003 - Version 0.4.1: Add auto-generation of built-in modes.
41 * (David Dawes)
42 *
43 * 02/2003 - Version 0.4.2: Add check for active non-CRT devices, and
44 * mode validation checks. (David Dawes)
45 *
46 * 02/2003 - Version 0.4.3: Check when the VC is in graphics mode so that
47 * acceleration is disabled while an XFree86 server is running.
48 * (David Dawes)
49 *
50 * 02/2003 - Version 0.4.4: Monitor DPMS support. (David Dawes)
51 *
52 * 02/2003 - Version 0.4.5: Basic XFree86 + fbdev working. (David Dawes)
53 *
54 * 02/2003 - Version 0.5.0: Modify to work with the 2.5.32 kernel as well
55 * as 2.4.x kernels. (David Dawes)
56 *
57 * 02/2003 - Version 0.6.0: Split out HW-specifics into a separate file.
58 * (David Dawes)
59 *
60 * 02/2003 - Version 0.7.0: Test on 852GM/855GM. Acceleration and HW
61 * cursor are disabled on this platform. (David Dawes)
62 *
63 * 02/2003 - Version 0.7.1: Test on 845G. Acceleration is disabled
64 * on this platform. (David Dawes)
65 *
66 * 02/2003 - Version 0.7.2: Test on 830M. Acceleration and HW
67 * cursor are disabled on this platform. (David Dawes)
68 *
69 * 02/2003 - Version 0.7.3: Fix 8-bit modes for mobile platforms
70 * (David Dawes)
71 *
72 * 02/2003 - Version 0.7.4: Add checks for FB and FBCON_HAS_CFB* configured
73 * in the kernel, and add mode bpp verification and default
74 * bpp selection based on which FBCON_HAS_CFB* are configured.
75 * (David Dawes)
76 *
77 * 02/2003 - Version 0.7.5: Add basic package/install scripts based on the
78 * DRI packaging scripts. (David Dawes)
79 *
80 * 04/2003 - Version 0.7.6: Fix typo that affects builds with SMP-enabled
81 * kernels. (David Dawes, reported by Anupam).
82 *
83 * 06/2003 - Version 0.7.7:
84 * Fix Makefile.kernel build problem (Tsutomu Yasuda).
85 * Fix mis-placed #endif (2.4.21 kernel).
86 *
87 * 09/2004 - Version 0.9.0 - by Sylvain Meyer
88 * Port to linux 2.6 kernel fbdev
89 * Fix HW accel and HW cursor on i845G
90 * Use of agpgart for fb memory reservation
91 * Add mtrr support
92 *
93 * 10/2004 - Version 0.9.1
94 * Use module_param instead of old MODULE_PARM
95 * Some cleanup
96 *
97 * 11/2004 - Version 0.9.2
98 * Add vram option to reserve more memory than stolen by BIOS
99 * Fix intelfbhw_pan_display typo
100 * Add __initdata annotations
101 *
102 * TODO:
103 *
104 *
105 * Wish List:
106 *
107 *
108 */
109
110 #include <linux/config.h>
111 #include <linux/module.h>
112 #include <linux/kernel.h>
113 #include <linux/errno.h>
114 #include <linux/string.h>
115 #include <linux/mm.h>
116 #include <linux/tty.h>
117 #include <linux/slab.h>
118 #include <linux/delay.h>
119 #include <linux/fb.h>
120 #include <linux/ioport.h>
121 #include <linux/init.h>
122 #include <linux/pci.h>
123 #include <linux/vmalloc.h>
124 #include <linux/pagemap.h>
125
126 #include <asm/io.h>
127
128 #ifdef CONFIG_MTRR
129 #include <asm/mtrr.h>
130 #endif
131
132 #include "intelfb.h"
133 #include "intelfbhw.h"
134
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_check_var(struct fb_var_screeninfo *var,
139 struct fb_info *info);
140 static int intelfb_set_par(struct fb_info *info);
141 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
142 unsigned blue, unsigned transp,
143 struct fb_info *info);
144
145 static int intelfb_blank(int blank, struct fb_info *info);
146 static int intelfb_pan_display(struct fb_var_screeninfo *var,
147 struct fb_info *info);
148
149 static void intelfb_fillrect(struct fb_info *info,
150 const struct fb_fillrect *rect);
151 static void intelfb_copyarea(struct fb_info *info,
152 const struct fb_copyarea *region);
153 static void intelfb_imageblit(struct fb_info *info,
154 const struct fb_image *image);
155 static int intelfb_cursor(struct fb_info *info,
156 struct fb_cursor *cursor);
157
158 static int intelfb_sync(struct fb_info *info);
159
160 static int intelfb_ioctl(struct fb_info *info,
161 unsigned int cmd, unsigned long arg);
162
163 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
164 const struct pci_device_id *ent);
165 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
166 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
167
168 /*
169 * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
170 * mobile chipsets from being registered.
171 */
172 #if DETECT_VGA_CLASS_ONLY
173 #define INTELFB_CLASS_MASK ~0 << 8
174 #else
175 #define INTELFB_CLASS_MASK 0
176 #endif
177
178 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
179 { 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 },
180 { 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 },
181 { 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 },
182 { 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 },
183 { 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 },
184 { 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 },
185 { 0, }
186 };
187
188 /* Global data */
189 static int num_registered = 0;
190
191 /* fb ops */
192 static struct fb_ops intel_fb_ops = {
193 .owner = THIS_MODULE,
194 .fb_check_var = intelfb_check_var,
195 .fb_set_par = intelfb_set_par,
196 .fb_setcolreg = intelfb_setcolreg,
197 .fb_blank = intelfb_blank,
198 .fb_pan_display = intelfb_pan_display,
199 .fb_fillrect = intelfb_fillrect,
200 .fb_copyarea = intelfb_copyarea,
201 .fb_imageblit = intelfb_imageblit,
202 .fb_cursor = intelfb_cursor,
203 .fb_sync = intelfb_sync,
204 .fb_ioctl = intelfb_ioctl
205 };
206
207 /* PCI driver module table */
208 static struct pci_driver intelfb_driver = {
209 .name = "intelfb",
210 .id_table = intelfb_pci_table,
211 .probe = intelfb_pci_register,
212 .remove = __devexit_p(intelfb_pci_unregister)
213 };
214
215 /* Module description/parameters */
216 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
217 "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
218 MODULE_DESCRIPTION(
219 "Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS " chipsets");
220 MODULE_LICENSE("Dual BSD/GPL");
221 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
222
223 static int accel = 1;
224 static int vram = 4;
225 static int hwcursor = 0;
226 static int mtrr = 1;
227 static int fixed = 0;
228 static int noinit = 0;
229 static int noregister = 0;
230 static int probeonly = 0;
231 static int idonly = 0;
232 static int bailearly = 0;
233 static int voffset = 48;
234 static char *mode = NULL;
235
236 module_param(accel, bool, S_IRUGO);
237 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
238 module_param(vram, int, S_IRUGO);
239 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
240 module_param(voffset, int, S_IRUGO);
241 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
242 module_param(hwcursor, bool, S_IRUGO);
243 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
244 module_param(mtrr, bool, S_IRUGO);
245 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
246 module_param(fixed, bool, S_IRUGO);
247 MODULE_PARM_DESC(fixed, "Disable mode switching");
248 module_param(noinit, bool, 0);
249 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
250 module_param(noregister, bool, 0);
251 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
252 module_param(probeonly, bool, 0);
253 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
254 module_param(idonly, bool, 0);
255 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
256 module_param(bailearly, bool, 0);
257 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
258 module_param(mode, charp, S_IRUGO);
259 MODULE_PARM_DESC(mode,
260 "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
261
262 #ifndef MODULE
263 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
264 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name), NULL, 0)
265 #define OPT_STRVAL(opt, name) (opt + strlen(name))
266
267 static __inline__ char *
268 get_opt_string(const char *this_opt, const char *name)
269 {
270 const char *p;
271 int i;
272 char *ret;
273
274 p = OPT_STRVAL(this_opt, name);
275 i = 0;
276 while (p[i] && p[i] != ' ' && p[i] != ',')
277 i++;
278 ret = kmalloc(i + 1, GFP_KERNEL);
279 if (ret) {
280 strncpy(ret, p, i);
281 ret[i] = '\0';
282 }
283 return ret;
284 }
285
286 static __inline__ int
287 get_opt_int(const char *this_opt, const char *name, int *ret)
288 {
289 if (!ret)
290 return 0;
291
292 if (!OPT_EQUAL(this_opt, name))
293 return 0;
294
295 *ret = OPT_INTVAL(this_opt, name);
296 return 1;
297 }
298
299 static __inline__ int
300 get_opt_bool(const char *this_opt, const char *name, int *ret)
301 {
302 if (!ret)
303 return 0;
304
305 if (OPT_EQUAL(this_opt, name)) {
306 if (this_opt[strlen(name)] == '=')
307 *ret = simple_strtoul(this_opt + strlen(name) + 1,
308 NULL, 0);
309 else
310 *ret = 1;
311 } else {
312 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
313 *ret = 0;
314 else
315 return 0;
316 }
317 return 1;
318 }
319
320 static int __init
321 intelfb_setup(char *options)
322 {
323 char *this_opt;
324
325 DBG_MSG("intelfb_setup\n");
326
327 if (!options || !*options) {
328 DBG_MSG("no options\n");
329 return 0;
330 } else
331 DBG_MSG("options: %s\n", options);
332
333 /*
334 * These are the built-in options analogous to the module parameters
335 * defined above.
336 *
337 * The syntax is:
338 *
339 * video=intelfb:[mode][,<param>=<val>] ...
340 *
341 * e.g.,
342 *
343 * video=intelfb:1024x768-16@75,accel=0
344 */
345
346 while ((this_opt = strsep(&options, ","))) {
347 if (!*this_opt)
348 continue;
349 if (get_opt_bool(this_opt, "accel", &accel))
350 ;
351 else if (get_opt_int(this_opt, "vram", &vram))
352 ;
353 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
354 ;
355 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
356 ;
357 else if (get_opt_bool(this_opt, "fixed", &fixed))
358 ;
359 else if (get_opt_bool(this_opt, "init", &noinit))
360 noinit = !noinit;
361 else if (OPT_EQUAL(this_opt, "mode="))
362 mode = get_opt_string(this_opt, "mode=");
363 else
364 mode = this_opt;
365 }
366
367 return 0;
368 }
369
370 #endif
371
372 static int __init
373 intelfb_init(void)
374 {
375 #ifndef MODULE
376 char *option = NULL;
377 #endif
378
379 DBG_MSG("intelfb_init\n");
380
381 INF_MSG("Framebuffer driver for "
382 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
383 INF_MSG("Version " INTELFB_VERSION "\n");
384
385 if (idonly)
386 return -ENODEV;
387
388 #ifndef MODULE
389 if (fb_get_options("intelfb", &option))
390 return -ENODEV;
391 intelfb_setup(option);
392 #endif
393
394 return pci_register_driver(&intelfb_driver);
395 }
396
397 static void __exit
398 intelfb_exit(void)
399 {
400 DBG_MSG("intelfb_exit\n");
401 pci_unregister_driver(&intelfb_driver);
402 }
403
404 module_init(intelfb_init);
405 module_exit(intelfb_exit);
406
407 /***************************************************************
408 * mtrr support functions *
409 ***************************************************************/
410
411 #ifdef CONFIG_MTRR
412 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
413 {
414 dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
415 dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
416 if (dinfo->mtrr_reg < 0) {
417 ERR_MSG("unable to set MTRR\n");
418 return;
419 }
420 dinfo->has_mtrr = 1;
421 }
422 static inline void unset_mtrr(struct intelfb_info *dinfo)
423 {
424 if (dinfo->has_mtrr)
425 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
426 dinfo->aperture.size);
427 }
428 #else
429 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
430
431 #define unset_mtrr(x) do { } while (0)
432 #endif /* CONFIG_MTRR */
433
434 /***************************************************************
435 * driver init / cleanup *
436 ***************************************************************/
437
438 static void
439 cleanup(struct intelfb_info *dinfo)
440 {
441 DBG_MSG("cleanup\n");
442
443 if (!dinfo)
444 return;
445
446 fb_dealloc_cmap(&dinfo->info->cmap);
447 kfree(dinfo->info->pixmap.addr);
448
449 if (dinfo->registered)
450 unregister_framebuffer(dinfo->info);
451
452 unset_mtrr(dinfo);
453
454 if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
455 agp_unbind_memory(dinfo->gtt_fb_mem);
456 agp_free_memory(dinfo->gtt_fb_mem);
457 }
458 if (dinfo->gtt_cursor_mem) {
459 agp_unbind_memory(dinfo->gtt_cursor_mem);
460 agp_free_memory(dinfo->gtt_cursor_mem);
461 }
462 if (dinfo->gtt_ring_mem) {
463 agp_unbind_memory(dinfo->gtt_ring_mem);
464 agp_free_memory(dinfo->gtt_ring_mem);
465 }
466
467 if (dinfo->mmio_base)
468 iounmap((void __iomem *)dinfo->mmio_base);
469 if (dinfo->aperture.virtual)
470 iounmap((void __iomem *)dinfo->aperture.virtual);
471
472 if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
473 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
474 if (dinfo->flag & INTELFB_FB_ACQUIRED)
475 release_mem_region(dinfo->aperture.physical,
476 dinfo->aperture.size);
477 framebuffer_release(dinfo->info);
478 }
479
480 #define bailout(dinfo) do { \
481 DBG_MSG("bailout\n"); \
482 cleanup(dinfo); \
483 INF_MSG("Not going to register framebuffer, exiting...\n"); \
484 return -ENODEV; \
485 } while (0)
486
487
488 static int __devinit
489 intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
490 {
491 struct fb_info *info;
492 struct intelfb_info *dinfo;
493 int i, err, dvo;
494 int aperture_size, stolen_size;
495 struct agp_kern_info gtt_info;
496 int agp_memtype;
497 const char *s;
498 struct agp_bridge_data *bridge;
499 int aperture_bar = 0;
500 int mmio_bar = 1;
501 int offset;
502
503 DBG_MSG("intelfb_pci_register\n");
504
505 num_registered++;
506 if (num_registered != 1) {
507 ERR_MSG("Attempted to register %d devices "
508 "(should be only 1).\n", num_registered);
509 return -ENODEV;
510 }
511
512 info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
513 if (!info) {
514 ERR_MSG("Could not allocate memory for intelfb_info.\n");
515 return -ENODEV;
516 }
517 if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
518 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
519 goto err_out_cmap;
520 return -ENODEV;
521 }
522
523 dinfo = info->par;
524 dinfo->info = info;
525 dinfo->fbops = &intel_fb_ops;
526 dinfo->pdev = pdev;
527
528 /* Reserve pixmap space. */
529 info->pixmap.addr = kmalloc(64 * 1024, GFP_KERNEL);
530 if (info->pixmap.addr == NULL) {
531 ERR_MSG("Cannot reserve pixmap memory.\n");
532 goto err_out_pixmap;
533 }
534 memset(info->pixmap.addr, 0, 64 * 1024);
535
536 /* set early this option because it could be changed by tv encoder
537 driver */
538 dinfo->fixed_mode = fixed;
539
540 /* Enable device. */
541 if ((err = pci_enable_device(pdev))) {
542 ERR_MSG("Cannot enable device.\n");
543 cleanup(dinfo);
544 return -ENODEV;
545 }
546
547 /* Set base addresses. */
548 if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
549 (ent->device == PCI_DEVICE_ID_INTEL_915GM)) {
550 aperture_bar = 2;
551 mmio_bar = 0;
552 /* Disable HW cursor on 915G/M (not implemented yet) */
553 hwcursor = 0;
554 }
555 dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
556 dinfo->aperture.size = pci_resource_len(pdev, aperture_bar);
557 dinfo->mmio_base_phys = pci_resource_start(pdev, mmio_bar);
558 DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
559 (unsigned long long)pci_resource_start(pdev, aperture_bar),
560 (unsigned long long)pci_resource_len(pdev, aperture_bar),
561 (unsigned long long)pci_resource_start(pdev, mmio_bar),
562 (unsigned long long)pci_resource_len(pdev, mmio_bar));
563
564 /* Reserve the fb and MMIO regions */
565 if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
566 INTELFB_MODULE_NAME)) {
567 ERR_MSG("Cannot reserve FB region.\n");
568 cleanup(dinfo);
569 return -ENODEV;
570 }
571
572 dinfo->flag |= INTELFB_FB_ACQUIRED;
573
574 if (!request_mem_region(dinfo->mmio_base_phys,
575 INTEL_REG_SIZE,
576 INTELFB_MODULE_NAME)) {
577 ERR_MSG("Cannot reserve MMIO region.\n");
578 cleanup(dinfo);
579 return -ENODEV;
580 }
581
582 dinfo->flag |= INTELFB_MMIO_ACQUIRED;
583
584 /* Get the chipset info. */
585 dinfo->pci_chipset = pdev->device;
586
587 if (intelfbhw_get_chipset(pdev, &dinfo->name, &dinfo->chipset,
588 &dinfo->mobile)) {
589 cleanup(dinfo);
590 return -ENODEV;
591 }
592
593 if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
594 cleanup(dinfo);
595 return -ENODEV;
596 }
597
598 INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
599 "stolen memory %dkB\n",
600 pdev->bus->number, PCI_SLOT(pdev->devfn),
601 PCI_FUNC(pdev->devfn), dinfo->name,
602 BtoMB(aperture_size), BtoKB(stolen_size));
603
604 /* Set these from the options. */
605 dinfo->accel = accel;
606 dinfo->hwcursor = hwcursor;
607
608 if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
609 INF_MSG("Acceleration is not supported for the %s chipset.\n",
610 dinfo->name);
611 dinfo->accel = 0;
612 }
613
614 /* Framebuffer parameters - Use all the stolen memory if >= vram */
615 if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
616 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
617 dinfo->fbmem_gart = 0;
618 } else {
619 dinfo->fb.size = MB(vram);
620 dinfo->fbmem_gart = 1;
621 }
622
623 /* Allocate space for the ring buffer and HW cursor if enabled. */
624 if (dinfo->accel) {
625 dinfo->ring.size = RINGBUFFER_SIZE;
626 dinfo->ring_tail_mask = dinfo->ring.size - 1;
627 }
628 if (dinfo->hwcursor) {
629 dinfo->cursor.size = HW_CURSOR_SIZE;
630 }
631
632 /* Use agpgart to manage the GATT */
633 if (!(bridge = agp_backend_acquire(pdev))) {
634 ERR_MSG("cannot acquire agp\n");
635 cleanup(dinfo);
636 return -ENODEV;
637 }
638
639 /* get the current gatt info */
640 if (agp_copy_info(bridge, &gtt_info)) {
641 ERR_MSG("cannot get agp info\n");
642 agp_backend_release(bridge);
643 cleanup(dinfo);
644 return -ENODEV;
645 }
646
647 if (MB(voffset) < stolen_size)
648 offset = (stolen_size >> 12);
649 else
650 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
651
652 /* set the mem offsets - set them after the already used pages */
653 if (dinfo->accel) {
654 dinfo->ring.offset = offset + gtt_info.current_memory;
655 }
656 if (dinfo->hwcursor) {
657 dinfo->cursor.offset = offset +
658 + gtt_info.current_memory + (dinfo->ring.size >> 12);
659 }
660 if (dinfo->fbmem_gart) {
661 dinfo->fb.offset = offset +
662 + gtt_info.current_memory + (dinfo->ring.size >> 12)
663 + (dinfo->cursor.size >> 12);
664 }
665
666 /* Allocate memories (which aren't stolen) */
667 /* Map the fb and MMIO regions */
668 /* ioremap only up to the end of used aperture */
669 dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
670 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
671 + dinfo->fb.size);
672 if (!dinfo->aperture.virtual) {
673 ERR_MSG("Cannot remap FB region.\n");
674 cleanup(dinfo);
675 return -ENODEV;
676 }
677
678 dinfo->mmio_base =
679 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
680 INTEL_REG_SIZE);
681 if (!dinfo->mmio_base) {
682 ERR_MSG("Cannot remap MMIO region.\n");
683 cleanup(dinfo);
684 return -ENODEV;
685 }
686
687 if (dinfo->accel) {
688 if (!(dinfo->gtt_ring_mem =
689 agp_allocate_memory(bridge, dinfo->ring.size >> 12,
690 AGP_NORMAL_MEMORY))) {
691 ERR_MSG("cannot allocate ring buffer memory\n");
692 agp_backend_release(bridge);
693 cleanup(dinfo);
694 return -ENOMEM;
695 }
696 if (agp_bind_memory(dinfo->gtt_ring_mem,
697 dinfo->ring.offset)) {
698 ERR_MSG("cannot bind ring buffer memory\n");
699 agp_backend_release(bridge);
700 cleanup(dinfo);
701 return -EBUSY;
702 }
703 dinfo->ring.physical = dinfo->aperture.physical
704 + (dinfo->ring.offset << 12);
705 dinfo->ring.virtual = dinfo->aperture.virtual
706 + (dinfo->ring.offset << 12);
707 dinfo->ring_head = dinfo->ring.virtual;
708 }
709 if (dinfo->hwcursor) {
710 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
711 : AGP_NORMAL_MEMORY;
712 if (!(dinfo->gtt_cursor_mem =
713 agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
714 agp_memtype))) {
715 ERR_MSG("cannot allocate cursor memory\n");
716 agp_backend_release(bridge);
717 cleanup(dinfo);
718 return -ENOMEM;
719 }
720 if (agp_bind_memory(dinfo->gtt_cursor_mem,
721 dinfo->cursor.offset)) {
722 ERR_MSG("cannot bind cursor memory\n");
723 agp_backend_release(bridge);
724 cleanup(dinfo);
725 return -EBUSY;
726 }
727 if (dinfo->mobile)
728 dinfo->cursor.physical
729 = dinfo->gtt_cursor_mem->physical;
730 else
731 dinfo->cursor.physical = dinfo->aperture.physical
732 + (dinfo->cursor.offset << 12);
733 dinfo->cursor.virtual = dinfo->aperture.virtual
734 + (dinfo->cursor.offset << 12);
735 }
736 if (dinfo->fbmem_gart) {
737 if (!(dinfo->gtt_fb_mem =
738 agp_allocate_memory(bridge, dinfo->fb.size >> 12,
739 AGP_NORMAL_MEMORY))) {
740 WRN_MSG("cannot allocate framebuffer memory - use "
741 "the stolen one\n");
742 dinfo->fbmem_gart = 0;
743 }
744 if (agp_bind_memory(dinfo->gtt_fb_mem,
745 dinfo->fb.offset)) {
746 WRN_MSG("cannot bind framebuffer memory - use "
747 "the stolen one\n");
748 dinfo->fbmem_gart = 0;
749 }
750 }
751
752 /* update framebuffer memory parameters */
753 if (!dinfo->fbmem_gart)
754 dinfo->fb.offset = 0; /* starts at offset 0 */
755 dinfo->fb.physical = dinfo->aperture.physical
756 + (dinfo->fb.offset << 12);
757 dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
758 dinfo->fb_start = dinfo->fb.offset << 12;
759
760 /* release agpgart */
761 agp_backend_release(bridge);
762
763 if (mtrr)
764 set_mtrr(dinfo);
765
766 DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%x)\n",
767 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
768 (u32 __iomem ) dinfo->fb.virtual);
769 DBG_MSG("MMIO: 0x%x/0x%x (0x%x)\n",
770 dinfo->mmio_base_phys, INTEL_REG_SIZE,
771 (u32 __iomem) dinfo->mmio_base);
772 DBG_MSG("ring buffer: 0x%x/0x%x (0x%x)\n",
773 dinfo->ring.physical, dinfo->ring.size,
774 (u32 __iomem ) dinfo->ring.virtual);
775 DBG_MSG("HW cursor: 0x%x/0x%x (0x%x) (offset 0x%x) (phys 0x%x)\n",
776 dinfo->cursor.physical, dinfo->cursor.size,
777 (u32 __iomem ) dinfo->cursor.virtual, dinfo->cursor.offset,
778 dinfo->cursor.physical);
779
780 DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
781 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
782 DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
783
784 if (probeonly)
785 bailout(dinfo);
786
787 /*
788 * Check if the LVDS port or any DVO ports are enabled. If so,
789 * don't allow mode switching
790 */
791 dvo = intelfbhw_check_non_crt(dinfo);
792 if (dvo) {
793 dinfo->fixed_mode = 1;
794 WRN_MSG("Non-CRT device is enabled ( ");
795 i = 0;
796 while (dvo) {
797 if (dvo & 1) {
798 s = intelfbhw_dvo_to_string(1 << i);
799 if (s)
800 printk("%s ", s);
801 }
802 dvo >>= 1;
803 ++i;
804 }
805 printk("). Disabling mode switching.\n");
806 }
807
808 if (bailearly == 1)
809 bailout(dinfo);
810
811 if (FIXED_MODE(dinfo) && ORIG_VIDEO_ISVGA != VIDEO_TYPE_VLFB) {
812 ERR_MSG("Video mode must be programmed at boot time.\n");
813 cleanup(dinfo);
814 return -ENODEV;
815 }
816
817 if (bailearly == 2)
818 bailout(dinfo);
819
820 /* Initialise dinfo and related data. */
821 /* If an initial mode was programmed at boot time, get its details. */
822 if (ORIG_VIDEO_ISVGA == VIDEO_TYPE_VLFB)
823 get_initial_mode(dinfo);
824
825 if (bailearly == 3)
826 bailout(dinfo);
827
828 if (FIXED_MODE(dinfo)) {
829 /* remap fb address */
830 update_dinfo(dinfo, &dinfo->initial_var);
831 }
832
833 if (bailearly == 4)
834 bailout(dinfo);
835
836
837 if (intelfb_set_fbinfo(dinfo)) {
838 cleanup(dinfo);
839 return -ENODEV;
840 }
841
842 if (bailearly == 5)
843 bailout(dinfo);
844
845 if (bailearly == 6)
846 bailout(dinfo);
847
848 pci_set_drvdata(pdev, dinfo);
849
850 /* Save the initial register state. */
851 i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
852 bailearly > 6 ? bailearly - 6 : 0);
853 if (i != 0) {
854 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
855 bailout(dinfo);
856 }
857
858 intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
859
860 if (bailearly == 18)
861 bailout(dinfo);
862
863 /* Cursor initialisation */
864 if (dinfo->hwcursor) {
865 intelfbhw_cursor_init(dinfo);
866 intelfbhw_cursor_reset(dinfo);
867 }
868
869 if (bailearly == 19)
870 bailout(dinfo);
871
872 /* 2d acceleration init */
873 if (dinfo->accel)
874 intelfbhw_2d_start(dinfo);
875
876 if (bailearly == 20)
877 bailout(dinfo);
878
879 if (noregister)
880 bailout(dinfo);
881
882 if (register_framebuffer(dinfo->info) < 0) {
883 ERR_MSG("Cannot register framebuffer.\n");
884 cleanup(dinfo);
885 return -ENODEV;
886 }
887
888 dinfo->registered = 1;
889
890 return 0;
891
892 err_out_pixmap:
893 fb_dealloc_cmap(&info->cmap);
894 err_out_cmap:
895 framebuffer_release(info);
896 return -ENODEV;
897 }
898
899 static void __devexit
900 intelfb_pci_unregister(struct pci_dev *pdev)
901 {
902 struct intelfb_info *dinfo = pci_get_drvdata(pdev);
903
904 DBG_MSG("intelfb_pci_unregister\n");
905
906 if (!dinfo)
907 return;
908
909 cleanup(dinfo);
910
911 pci_set_drvdata(pdev, NULL);
912 }
913
914 /***************************************************************
915 * helper functions *
916 ***************************************************************/
917
918 int __inline__
919 intelfb_var_to_depth(const struct fb_var_screeninfo *var)
920 {
921 DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
922 var->bits_per_pixel, var->green.length);
923
924 switch (var->bits_per_pixel) {
925 case 16:
926 return (var->green.length == 6) ? 16 : 15;
927 case 32:
928 return 24;
929 default:
930 return var->bits_per_pixel;
931 }
932 }
933
934
935 static __inline__ int
936 var_to_refresh(const struct fb_var_screeninfo *var)
937 {
938 int xtot = var->xres + var->left_margin + var->right_margin +
939 var->hsync_len;
940 int ytot = var->yres + var->upper_margin + var->lower_margin +
941 var->vsync_len;
942
943 return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
944 }
945
946 /***************************************************************
947 * Various intialisation functions *
948 ***************************************************************/
949
950 static void __devinit
951 get_initial_mode(struct intelfb_info *dinfo)
952 {
953 struct fb_var_screeninfo *var;
954 int xtot, ytot;
955
956 DBG_MSG("get_initial_mode\n");
957
958 dinfo->initial_vga = 1;
959 dinfo->initial_fb_base = screen_info.lfb_base;
960 dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
961 dinfo->initial_pitch = screen_info.lfb_linelength;
962
963 var = &dinfo->initial_var;
964 memset(var, 0, sizeof(*var));
965 var->xres = screen_info.lfb_width;
966 var->yres = screen_info.lfb_height;
967 var->bits_per_pixel = screen_info.lfb_depth;
968 switch (screen_info.lfb_depth) {
969 case 15:
970 var->bits_per_pixel = 16;
971 break;
972 case 24:
973 var->bits_per_pixel = 32;
974 break;
975 }
976
977 DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
978 dinfo->initial_fb_base, dinfo->initial_video_ram,
979 BtoKB(dinfo->initial_video_ram));
980
981 DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
982 var->xres, var->yres, var->bits_per_pixel,
983 dinfo->initial_pitch);
984
985 /* Dummy timing values (assume 60Hz) */
986 var->left_margin = (var->xres / 8) & 0xf8;
987 var->right_margin = 32;
988 var->upper_margin = 16;
989 var->lower_margin = 4;
990 var->hsync_len = (var->xres / 8) & 0xf8;
991 var->vsync_len = 4;
992
993 xtot = var->xres + var->left_margin +
994 var->right_margin + var->hsync_len;
995 ytot = var->yres + var->upper_margin +
996 var->lower_margin + var->vsync_len;
997 var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
998
999 var->height = -1;
1000 var->width = -1;
1001
1002 if (var->bits_per_pixel > 8) {
1003 var->red.offset = screen_info.red_pos;
1004 var->red.length = screen_info.red_size;
1005 var->green.offset = screen_info.green_pos;
1006 var->green.length = screen_info.green_size;
1007 var->blue.offset = screen_info.blue_pos;
1008 var->blue.length = screen_info.blue_size;
1009 var->transp.offset = screen_info.rsvd_pos;
1010 var->transp.length = screen_info.rsvd_size;
1011 } else {
1012 var->red.length = 8;
1013 var->green.length = 8;
1014 var->blue.length = 8;
1015 }
1016 }
1017
1018 static int __devinit
1019 intelfb_init_var(struct intelfb_info *dinfo)
1020 {
1021 struct fb_var_screeninfo *var;
1022 int msrc = 0;
1023
1024 DBG_MSG("intelfb_init_var\n");
1025
1026 var = &dinfo->info->var;
1027 if (FIXED_MODE(dinfo)) {
1028 memcpy(var, &dinfo->initial_var,
1029 sizeof(struct fb_var_screeninfo));
1030 msrc = 5;
1031 } else {
1032 if (mode) {
1033 msrc = fb_find_mode(var, dinfo->info, mode,
1034 vesa_modes, VESA_MODEDB_SIZE,
1035 NULL, 0);
1036 if (msrc)
1037 msrc |= 8;
1038 }
1039 if (!msrc) {
1040 msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1041 vesa_modes, VESA_MODEDB_SIZE,
1042 NULL, 0);
1043 }
1044 }
1045
1046 if (!msrc) {
1047 ERR_MSG("Cannot find a suitable video mode.\n");
1048 return 1;
1049 }
1050
1051 INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1052 var->bits_per_pixel, var_to_refresh(var));
1053
1054 DBG_MSG("Initial video mode is from %d.\n", msrc);
1055
1056 #if ALLOCATE_FOR_PANNING
1057 /* Allow use of half of the video ram for panning */
1058 var->xres_virtual = var->xres;
1059 var->yres_virtual =
1060 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1061 if (var->yres_virtual < var->yres)
1062 var->yres_virtual = var->yres;
1063 #else
1064 var->yres_virtual = var->yres;
1065 #endif
1066
1067 if (dinfo->accel)
1068 var->accel_flags |= FB_ACCELF_TEXT;
1069 else
1070 var->accel_flags &= ~FB_ACCELF_TEXT;
1071
1072 return 0;
1073 }
1074
1075 static int __devinit
1076 intelfb_set_fbinfo(struct intelfb_info *dinfo)
1077 {
1078 struct fb_info *info = dinfo->info;
1079
1080 DBG_MSG("intelfb_set_fbinfo\n");
1081
1082 info->flags = FBINFO_FLAG_DEFAULT;
1083 info->fbops = &intel_fb_ops;
1084 info->pseudo_palette = dinfo->pseudo_palette;
1085
1086 info->pixmap.size = 64*1024;
1087 info->pixmap.buf_align = 8;
1088 info->pixmap.access_align = 32;
1089 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1090
1091 if (intelfb_init_var(dinfo))
1092 return 1;
1093
1094 info->pixmap.scan_align = 1;
1095 strcpy(info->fix.id, dinfo->name);
1096 info->fix.smem_start = dinfo->fb.physical;
1097 info->fix.smem_len = dinfo->fb.size;
1098 info->fix.type = FB_TYPE_PACKED_PIXELS;
1099 info->fix.type_aux = 0;
1100 info->fix.xpanstep = 8;
1101 info->fix.ypanstep = 1;
1102 info->fix.ywrapstep = 0;
1103 info->fix.mmio_start = dinfo->mmio_base_phys;
1104 info->fix.mmio_len = INTEL_REG_SIZE;
1105 info->fix.accel = FB_ACCEL_I830;
1106 update_dinfo(dinfo, &info->var);
1107
1108 return 0;
1109 }
1110
1111 /* Update dinfo to match the active video mode. */
1112 static void
1113 update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var)
1114 {
1115 DBG_MSG("update_dinfo\n");
1116
1117 dinfo->bpp = var->bits_per_pixel;
1118 dinfo->depth = intelfb_var_to_depth(var);
1119 dinfo->xres = var->xres;
1120 dinfo->yres = var->xres;
1121 dinfo->pixclock = var->pixclock;
1122
1123 dinfo->info->fix.visual = dinfo->visual;
1124 dinfo->info->fix.line_length = dinfo->pitch;
1125
1126 switch (dinfo->bpp) {
1127 case 8:
1128 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1129 dinfo->pitch = var->xres_virtual;
1130 break;
1131 case 16:
1132 dinfo->visual = FB_VISUAL_TRUECOLOR;
1133 dinfo->pitch = var->xres_virtual * 2;
1134 break;
1135 case 32:
1136 dinfo->visual = FB_VISUAL_TRUECOLOR;
1137 dinfo->pitch = var->xres_virtual * 4;
1138 break;
1139 }
1140
1141 /* Make sure the line length is a aligned correctly. */
1142 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1143
1144 if (FIXED_MODE(dinfo))
1145 dinfo->pitch = dinfo->initial_pitch;
1146
1147 dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1148 dinfo->info->fix.line_length = dinfo->pitch;
1149 dinfo->info->fix.visual = dinfo->visual;
1150 }
1151
1152 /* fbops functions */
1153
1154 /***************************************************************
1155 * fbdev interface *
1156 ***************************************************************/
1157
1158 static int
1159 intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1160 {
1161 int change_var = 0;
1162 struct fb_var_screeninfo v;
1163 struct intelfb_info *dinfo;
1164 static int first = 1;
1165
1166 DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1167
1168 dinfo = GET_DINFO(info);
1169
1170 if (intelfbhw_validate_mode(dinfo, var) != 0)
1171 return -EINVAL;
1172
1173 v = *var;
1174
1175 /* Check for a supported bpp. */
1176 if (v.bits_per_pixel <= 8) {
1177 v.bits_per_pixel = 8;
1178 } else if (v.bits_per_pixel <= 16) {
1179 if (v.bits_per_pixel == 16)
1180 v.green.length = 6;
1181 v.bits_per_pixel = 16;
1182 } else if (v.bits_per_pixel <= 32) {
1183 v.bits_per_pixel = 32;
1184 } else
1185 return -EINVAL;
1186
1187 change_var = ((info->var.xres != var->xres) ||
1188 (info->var.yres != var->yres) ||
1189 (info->var.xres_virtual != var->xres_virtual) ||
1190 (info->var.yres_virtual != var->yres_virtual) ||
1191 (info->var.bits_per_pixel != var->bits_per_pixel) ||
1192 memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1193 memcmp(&info->var.green, &var->green,
1194 sizeof(var->green)) ||
1195 memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1196
1197 if (FIXED_MODE(dinfo) &&
1198 (change_var ||
1199 var->yres_virtual > dinfo->initial_var.yres_virtual ||
1200 var->yres_virtual < dinfo->initial_var.yres ||
1201 var->xoffset || var->nonstd)) {
1202 if (first) {
1203 ERR_MSG("Changing the video mode is not supported.\n");
1204 first = 0;
1205 }
1206 return -EINVAL;
1207 }
1208
1209 switch (intelfb_var_to_depth(&v)) {
1210 case 8:
1211 v.red.offset = v.green.offset = v.blue.offset = 0;
1212 v.red.length = v.green.length = v.blue.length = 8;
1213 v.transp.offset = v.transp.length = 0;
1214 break;
1215 case 15:
1216 v.red.offset = 10;
1217 v.green.offset = 5;
1218 v.blue.offset = 0;
1219 v.red.length = v.green.length = v.blue.length = 5;
1220 v.transp.offset = v.transp.length = 0;
1221 break;
1222 case 16:
1223 v.red.offset = 11;
1224 v.green.offset = 5;
1225 v.blue.offset = 0;
1226 v.red.length = 5;
1227 v.green.length = 6;
1228 v.blue.length = 5;
1229 v.transp.offset = v.transp.length = 0;
1230 break;
1231 case 24:
1232 v.red.offset = 16;
1233 v.green.offset = 8;
1234 v.blue.offset = 0;
1235 v.red.length = v.green.length = v.blue.length = 8;
1236 v.transp.offset = v.transp.length = 0;
1237 break;
1238 case 32:
1239 v.red.offset = 16;
1240 v.green.offset = 8;
1241 v.blue.offset = 0;
1242 v.red.length = v.green.length = v.blue.length = 8;
1243 v.transp.offset = 24;
1244 v.transp.length = 8;
1245 break;
1246 }
1247
1248 if (v.xoffset < 0)
1249 v.xoffset = 0;
1250 if (v.yoffset < 0)
1251 v.yoffset = 0;
1252
1253 if (v.xoffset > v.xres_virtual - v.xres)
1254 v.xoffset = v.xres_virtual - v.xres;
1255 if (v.yoffset > v.yres_virtual - v.yres)
1256 v.yoffset = v.yres_virtual - v.yres;
1257
1258 v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1259 v.transp.msb_right = 0;
1260
1261 *var = v;
1262
1263 return 0;
1264 }
1265
1266 static int
1267 intelfb_set_par(struct fb_info *info)
1268 {
1269 struct intelfb_hwstate *hw;
1270 struct intelfb_info *dinfo = GET_DINFO(info);
1271
1272 if (FIXED_MODE(dinfo)) {
1273 ERR_MSG("Changing the video mode is not supported.\n");
1274 return -EINVAL;
1275 }
1276
1277 hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1278 if (!hw)
1279 return -ENOMEM;
1280
1281 DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1282 info->var.yres, info->var.bits_per_pixel);
1283
1284 intelfb_blank(FB_BLANK_POWERDOWN, info);
1285
1286 if (ACCEL(dinfo, info))
1287 intelfbhw_2d_stop(dinfo);
1288
1289 memcpy(hw, &dinfo->save_state, sizeof(*hw));
1290 if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1291 goto invalid_mode;
1292 if (intelfbhw_program_mode(dinfo, hw, 0))
1293 goto invalid_mode;
1294
1295 #if REGDUMP > 0
1296 intelfbhw_read_hw_state(dinfo, hw, 0);
1297 intelfbhw_print_hw_state(dinfo, hw);
1298 #endif
1299
1300 update_dinfo(dinfo, &info->var);
1301
1302 if (ACCEL(dinfo, info))
1303 intelfbhw_2d_start(dinfo);
1304
1305 intelfb_pan_display(&info->var, info);
1306
1307 intelfb_blank(FB_BLANK_UNBLANK, info);
1308
1309 if (ACCEL(dinfo, info)) {
1310 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1311 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1312 FBINFO_HWACCEL_IMAGEBLIT;
1313 } else {
1314 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1315 }
1316 kfree(hw);
1317 return 0;
1318 invalid_mode:
1319 kfree(hw);
1320 return -EINVAL;
1321 }
1322
1323 static int
1324 intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1325 unsigned blue, unsigned transp, struct fb_info *info)
1326 {
1327 struct intelfb_info *dinfo = GET_DINFO(info);
1328
1329 #if VERBOSE > 0
1330 DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1331 #endif
1332
1333 if (regno > 255)
1334 return 1;
1335
1336 if (dinfo->depth == 8) {
1337 red >>= 8;
1338 green >>= 8;
1339 blue >>= 8;
1340
1341 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1342 transp);
1343 }
1344
1345 if (regno < 16) {
1346 switch (dinfo->depth) {
1347 case 15:
1348 dinfo->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
1349 ((green & 0xf800) >> 6) |
1350 ((blue & 0xf800) >> 11);
1351 break;
1352 case 16:
1353 dinfo->pseudo_palette[regno] = (red & 0xf800) |
1354 ((green & 0xfc00) >> 5) |
1355 ((blue & 0xf800) >> 11);
1356 break;
1357 case 24:
1358 dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1359 (green & 0xff00) |
1360 ((blue & 0xff00) >> 8);
1361 break;
1362 }
1363 }
1364
1365 return 0;
1366 }
1367
1368 static int
1369 intelfb_blank(int blank, struct fb_info *info)
1370 {
1371 intelfbhw_do_blank(blank, info);
1372 return 0;
1373 }
1374
1375 static int
1376 intelfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1377 {
1378 intelfbhw_pan_display(var, info);
1379 return 0;
1380 }
1381
1382 /* When/if we have our own ioctls. */
1383 static int
1384 intelfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
1385 {
1386 int retval = 0;
1387
1388 return retval;
1389 }
1390
1391 static void
1392 intelfb_fillrect (struct fb_info *info, const struct fb_fillrect *rect)
1393 {
1394 struct intelfb_info *dinfo = GET_DINFO(info);
1395 u32 rop, color;
1396
1397 #if VERBOSE > 0
1398 DBG_MSG("intelfb_fillrect\n");
1399 #endif
1400
1401 if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1402 return cfb_fillrect(info, rect);
1403
1404 if (rect->rop == ROP_COPY)
1405 rop = PAT_ROP_GXCOPY;
1406 else // ROP_XOR
1407 rop = PAT_ROP_GXXOR;
1408
1409 if (dinfo->depth != 8)
1410 color = dinfo->pseudo_palette[rect->color];
1411 else
1412 color = rect->color;
1413
1414 intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1415 rect->width, rect->height, color,
1416 dinfo->pitch, info->var.bits_per_pixel,
1417 rop);
1418 }
1419
1420 static void
1421 intelfb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
1422 {
1423 struct intelfb_info *dinfo = GET_DINFO(info);
1424
1425 #if VERBOSE > 0
1426 DBG_MSG("intelfb_copyarea\n");
1427 #endif
1428
1429 if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1430 return cfb_copyarea(info, region);
1431
1432 intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1433 region->dy, region->width, region->height,
1434 dinfo->pitch, info->var.bits_per_pixel);
1435 }
1436
1437 static void
1438 intelfb_imageblit(struct fb_info *info, const struct fb_image *image)
1439 {
1440 struct intelfb_info *dinfo = GET_DINFO(info);
1441 u32 fgcolor, bgcolor;
1442
1443 #if VERBOSE > 0
1444 DBG_MSG("intelfb_imageblit\n");
1445 #endif
1446
1447 if (!ACCEL(dinfo, info) || dinfo->depth == 4
1448 || image->depth != 1)
1449 return cfb_imageblit(info, image);
1450
1451 if (dinfo->depth != 8) {
1452 fgcolor = dinfo->pseudo_palette[image->fg_color];
1453 bgcolor = dinfo->pseudo_palette[image->bg_color];
1454 } else {
1455 fgcolor = image->fg_color;
1456 bgcolor = image->bg_color;
1457 }
1458
1459 if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1460 image->height, image->data,
1461 image->dx, image->dy,
1462 dinfo->pitch, info->var.bits_per_pixel))
1463 return cfb_imageblit(info, image);
1464 }
1465
1466 static int
1467 intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1468 {
1469 struct intelfb_info *dinfo = GET_DINFO(info);
1470
1471 #if VERBOSE > 0
1472 DBG_MSG("intelfb_cursor\n");
1473 #endif
1474
1475 if (!dinfo->hwcursor)
1476 return -ENODEV;
1477
1478 intelfbhw_cursor_hide(dinfo);
1479
1480 /* If XFree killed the cursor - restore it */
1481 if (INREG(CURSOR_A_BASEADDR) != dinfo->cursor.offset << 12) {
1482 u32 fg, bg;
1483
1484 DBG_MSG("the cursor was killed - restore it !!\n");
1485 DBG_MSG("size %d, %d pos %d, %d\n",
1486 cursor->image.width, cursor->image.height,
1487 cursor->image.dx, cursor->image.dy);
1488
1489 intelfbhw_cursor_init(dinfo);
1490 intelfbhw_cursor_reset(dinfo);
1491 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1492 cursor->image.dy);
1493
1494 if (dinfo->depth != 8) {
1495 fg =dinfo->pseudo_palette[cursor->image.fg_color];
1496 bg =dinfo->pseudo_palette[cursor->image.bg_color];
1497 } else {
1498 fg = cursor->image.fg_color;
1499 bg = cursor->image.bg_color;
1500 }
1501 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1502 intelfbhw_cursor_load(dinfo, cursor->image.width,
1503 cursor->image.height,
1504 dinfo->cursor_src);
1505
1506 if (cursor->enable)
1507 intelfbhw_cursor_show(dinfo);
1508 return 0;
1509 }
1510
1511 if (cursor->set & FB_CUR_SETPOS) {
1512 u32 dx, dy;
1513
1514 dx = cursor->image.dx - info->var.xoffset;
1515 dy = cursor->image.dy - info->var.yoffset;
1516
1517 intelfbhw_cursor_setpos(dinfo, dx, dy);
1518 }
1519
1520 if (cursor->set & FB_CUR_SETSIZE) {
1521 if (cursor->image.width > 64 || cursor->image.height > 64)
1522 return -ENXIO;
1523
1524 intelfbhw_cursor_reset(dinfo);
1525 }
1526
1527 if (cursor->set & FB_CUR_SETCMAP) {
1528 u32 fg, bg;
1529
1530 if (dinfo->depth != 8) {
1531 fg = dinfo->pseudo_palette[cursor->image.fg_color];
1532 bg = dinfo->pseudo_palette[cursor->image.bg_color];
1533 } else {
1534 fg = cursor->image.fg_color;
1535 bg = cursor->image.bg_color;
1536 }
1537
1538 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1539 }
1540
1541 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1542 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1543 u32 size = s_pitch * cursor->image.height;
1544 u8 *dat = (u8 *) cursor->image.data;
1545 u8 *msk = (u8 *) cursor->mask;
1546 u8 src[64];
1547 u32 i;
1548
1549 if (cursor->image.depth != 1)
1550 return -ENXIO;
1551
1552 switch (cursor->rop) {
1553 case ROP_XOR:
1554 for (i = 0; i < size; i++)
1555 src[i] = dat[i] ^ msk[i];
1556 break;
1557 case ROP_COPY:
1558 default:
1559 for (i = 0; i < size; i++)
1560 src[i] = dat[i] & msk[i];
1561 break;
1562 }
1563
1564 /* save the bitmap to restore it when XFree will
1565 make the cursor dirty */
1566 memcpy(dinfo->cursor_src, src, size);
1567
1568 intelfbhw_cursor_load(dinfo, cursor->image.width,
1569 cursor->image.height, src);
1570 }
1571
1572 if (cursor->enable)
1573 intelfbhw_cursor_show(dinfo);
1574
1575 return 0;
1576 }
1577
1578 static int
1579 intelfb_sync(struct fb_info *info)
1580 {
1581 struct intelfb_info *dinfo = GET_DINFO(info);
1582
1583 #if VERBOSE > 0
1584 DBG_MSG("intelfb_sync\n");
1585 #endif
1586
1587 if (dinfo->ring_lockup)
1588 return 0;
1589
1590 intelfbhw_do_sync(dinfo);
1591 return 0;
1592 }
1593
Linux kernel - Deliverables
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