tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/*
2 * intelfb
3 *
4 * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM/
5 * 945G/945GM/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
107#include <linux/module.h>
108#include <linux/kernel.h>
109#include <linux/errno.h>
110#include <linux/string.h>
111#include <linux/mm.h>
112#include <linux/slab.h>
113#include <linux/delay.h>
114#include <linux/fb.h>
115#include <linux/ioport.h>
116#include <linux/init.h>
117#include <linux/pci.h>
118#include <linux/vmalloc.h>
119#include <linux/pagemap.h>
120#include <linux/screen_info.h>
121
122#include <asm/io.h>
123
124#ifdef CONFIG_MTRR
125#include <asm/mtrr.h>
126#endif
127
128#include "intelfb.h"
129#include "intelfbhw.h"
130#include "../edid.h"
131
132static void __devinit get_initial_mode(struct intelfb_info *dinfo);
133static void update_dinfo(struct intelfb_info *dinfo,
134 struct fb_var_screeninfo *var);
135static int intelfb_open(struct fb_info *info, int user);
136static int intelfb_release(struct fb_info *info, int user);
137static int intelfb_check_var(struct fb_var_screeninfo *var,
138 struct fb_info *info);
139static int intelfb_set_par(struct fb_info *info);
140static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
141 unsigned blue, unsigned transp,
142 struct fb_info *info);
143
144static int intelfb_blank(int blank, struct fb_info *info);
145static int intelfb_pan_display(struct fb_var_screeninfo *var,
146 struct fb_info *info);
147
148static void intelfb_fillrect(struct fb_info *info,
149 const struct fb_fillrect *rect);
150static void intelfb_copyarea(struct fb_info *info,
151 const struct fb_copyarea *region);
152static void intelfb_imageblit(struct fb_info *info,
153 const struct fb_image *image);
154static int intelfb_cursor(struct fb_info *info,
155 struct fb_cursor *cursor);
156
157static int intelfb_sync(struct fb_info *info);
158
159static int intelfb_ioctl(struct fb_info *info,
160 unsigned int cmd, unsigned long arg);
161
162static int __devinit intelfb_pci_register(struct pci_dev *pdev,
163 const struct pci_device_id *ent);
164static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
165static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
166
167/*
168 * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
169 * mobile chipsets from being registered.
170 */
171#if DETECT_VGA_CLASS_ONLY
172#define INTELFB_CLASS_MASK ~0 << 8
173#else
174#define INTELFB_CLASS_MASK 0
175#endif
176
177static struct pci_device_id intelfb_pci_table[] __devinitdata = {
178 { 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 },
179 { 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 },
180 { 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 },
181 { 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 },
182 { 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 },
183 { 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 },
184 { 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 },
185 { 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 },
186 { 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 },
187 { 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 },
188 { 0, }
189};
190
191/* Global data */
192static int num_registered = 0;
193
194/* fb ops */
195static struct fb_ops intel_fb_ops = {
196 .owner = THIS_MODULE,
197 .fb_open = intelfb_open,
198 .fb_release = intelfb_release,
199 .fb_check_var = intelfb_check_var,
200 .fb_set_par = intelfb_set_par,
201 .fb_setcolreg = intelfb_setcolreg,
202 .fb_blank = intelfb_blank,
203 .fb_pan_display = intelfb_pan_display,
204 .fb_fillrect = intelfb_fillrect,
205 .fb_copyarea = intelfb_copyarea,
206 .fb_imageblit = intelfb_imageblit,
207 .fb_cursor = intelfb_cursor,
208 .fb_sync = intelfb_sync,
209 .fb_ioctl = intelfb_ioctl
210};
211
212/* PCI driver module table */
213static struct pci_driver intelfb_driver = {
214 .name = "intelfb",
215 .id_table = intelfb_pci_table,
216 .probe = intelfb_pci_register,
217 .remove = __devexit_p(intelfb_pci_unregister)
218};
219
220/* Module description/parameters */
221MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
222 "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
223MODULE_DESCRIPTION("Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS
224 " chipsets");
225MODULE_LICENSE("Dual BSD/GPL");
226MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
227
228static int accel = 1;
229static int vram = 4;
230static int hwcursor = 0;
231static int mtrr = 1;
232static int fixed = 0;
233static int noinit = 0;
234static int noregister = 0;
235static int probeonly = 0;
236static int idonly = 0;
237static int bailearly = 0;
238static int voffset = 48;
239static char *mode = NULL;
240
241module_param(accel, bool, S_IRUGO);
242MODULE_PARM_DESC(accel, "Enable hardware acceleration");
243module_param(vram, int, S_IRUGO);
244MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
245module_param(voffset, int, S_IRUGO);
246MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
247module_param(hwcursor, bool, S_IRUGO);
248MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
249module_param(mtrr, bool, S_IRUGO);
250MODULE_PARM_DESC(mtrr, "Enable MTRR support");
251module_param(fixed, bool, S_IRUGO);
252MODULE_PARM_DESC(fixed, "Disable mode switching");
253module_param(noinit, bool, 0);
254MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
255module_param(noregister, bool, 0);
256MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
257module_param(probeonly, bool, 0);
258MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
259module_param(idonly, bool, 0);
260MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
261module_param(bailearly, bool, 0);
262MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
263module_param(mode, charp, S_IRUGO);
264MODULE_PARM_DESC(mode,
265 "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
266
267#ifndef MODULE
268#define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
269#define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
270#define OPT_STRVAL(opt, name) (opt + strlen(name))
271
272static __inline__ char * get_opt_string(const char *this_opt, const char *name)
273{
274 const char *p;
275 int i;
276 char *ret;
277
278 p = OPT_STRVAL(this_opt, name);
279 i = 0;
280 while (p[i] && p[i] != ' ' && p[i] != ',')
281 i++;
282 ret = kmalloc(i + 1, GFP_KERNEL);
283 if (ret) {
284 strncpy(ret, p, i);
285 ret[i] = '\0';
286 }
287 return ret;
288}
289
290static __inline__ int get_opt_int(const char *this_opt, const char *name,
291 int *ret)
292{
293 if (!ret)
294 return 0;
295
296 if (!OPT_EQUAL(this_opt, name))
297 return 0;
298
299 *ret = OPT_INTVAL(this_opt, name);
300 return 1;
301}
302
303static __inline__ int get_opt_bool(const char *this_opt, const char *name,
304 int *ret)
305{
306 if (!ret)
307 return 0;
308
309 if (OPT_EQUAL(this_opt, name)) {
310 if (this_opt[strlen(name)] == '=')
311 *ret = simple_strtoul(this_opt + strlen(name) + 1,
312 NULL, 0);
313 else
314 *ret = 1;
315 } else {
316 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
317 *ret = 0;
318 else
319 return 0;
320 }
321 return 1;
322}
323
324static int __init intelfb_setup(char *options)
325{
326 char *this_opt;
327
328 DBG_MSG("intelfb_setup\n");
329
330 if (!options || !*options) {
331 DBG_MSG("no options\n");
332 return 0;
333 } else
334 DBG_MSG("options: %s\n", options);
335
336 /*
337 * These are the built-in options analogous to the module parameters
338 * defined above.
339 *
340 * The syntax is:
341 *
342 * video=intelfb:[mode][,<param>=<val>] ...
343 *
344 * e.g.,
345 *
346 * video=intelfb:1024x768-16@75,accel=0
347 */
348
349 while ((this_opt = strsep(&options, ","))) {
350 if (!*this_opt)
351 continue;
352 if (get_opt_bool(this_opt, "accel", &accel))
353 ;
354 else if (get_opt_int(this_opt, "vram", &vram))
355 ;
356 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
357 ;
358 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
359 ;
360 else if (get_opt_bool(this_opt, "fixed", &fixed))
361 ;
362 else if (get_opt_bool(this_opt, "init", &noinit))
363 noinit = !noinit;
364 else if (OPT_EQUAL(this_opt, "mode="))
365 mode = get_opt_string(this_opt, "mode=");
366 else
367 mode = this_opt;
368 }
369
370 return 0;
371}
372
373#endif
374
375static int __init intelfb_init(void)
376{
377#ifndef MODULE
378 char *option = NULL;
379#endif
380
381 DBG_MSG("intelfb_init\n");
382
383 INF_MSG("Framebuffer driver for "
384 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
385 INF_MSG("Version " INTELFB_VERSION "\n");
386
387 if (idonly)
388 return -ENODEV;
389
390#ifndef MODULE
391 if (fb_get_options("intelfb", &option))
392 return -ENODEV;
393 intelfb_setup(option);
394#endif
395
396 return pci_register_driver(&intelfb_driver);
397}
398
399static void __exit intelfb_exit(void)
400{
401 DBG_MSG("intelfb_exit\n");
402 pci_unregister_driver(&intelfb_driver);
403}
404
405module_init(intelfb_init);
406module_exit(intelfb_exit);
407
408/***************************************************************
409 * mtrr support functions *
410 ***************************************************************/
411
412#ifdef CONFIG_MTRR
413static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
414{
415 dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
416 dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
417 if (dinfo->mtrr_reg < 0) {
418 ERR_MSG("unable to set MTRR\n");
419 return;
420 }
421 dinfo->has_mtrr = 1;
422}
423static inline void unset_mtrr(struct intelfb_info *dinfo)
424{
425 if (dinfo->has_mtrr)
426 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
427 dinfo->aperture.size);
428}
429#else
430#define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
431
432#define unset_mtrr(x) do { } while (0)
433#endif /* CONFIG_MTRR */
434
435/***************************************************************
436 * driver init / cleanup *
437 ***************************************************************/
438
439static void cleanup(struct intelfb_info *dinfo)
440{
441 DBG_MSG("cleanup\n");
442
443 if (!dinfo)
444 return;
445
446 intelfbhw_disable_irq(dinfo);
447
448 fb_dealloc_cmap(&dinfo->info->cmap);
449 kfree(dinfo->info->pixmap.addr);
450
451 if (dinfo->registered)
452 unregister_framebuffer(dinfo->info);
453
454 unset_mtrr(dinfo);
455
456 if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
457 agp_unbind_memory(dinfo->gtt_fb_mem);
458 agp_free_memory(dinfo->gtt_fb_mem);
459 }
460 if (dinfo->gtt_cursor_mem) {
461 agp_unbind_memory(dinfo->gtt_cursor_mem);
462 agp_free_memory(dinfo->gtt_cursor_mem);
463 }
464 if (dinfo->gtt_ring_mem) {
465 agp_unbind_memory(dinfo->gtt_ring_mem);
466 agp_free_memory(dinfo->gtt_ring_mem);
467 }
468
469#ifdef CONFIG_FB_INTEL_I2C
470 /* un-register I2C bus */
471 intelfb_delete_i2c_busses(dinfo);
472#endif
473
474 if (dinfo->mmio_base)
475 iounmap((void __iomem *)dinfo->mmio_base);
476 if (dinfo->aperture.virtual)
477 iounmap((void __iomem *)dinfo->aperture.virtual);
478
479 if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
480 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
481 if (dinfo->flag & INTELFB_FB_ACQUIRED)
482 release_mem_region(dinfo->aperture.physical,
483 dinfo->aperture.size);
484 framebuffer_release(dinfo->info);
485}
486
487#define bailout(dinfo) do { \
488 DBG_MSG("bailout\n"); \
489 cleanup(dinfo); \
490 INF_MSG("Not going to register framebuffer, exiting...\n"); \
491 return -ENODEV; \
492} while (0)
493
494
495static int __devinit intelfb_pci_register(struct pci_dev *pdev,
496 const struct pci_device_id *ent)
497{
498 struct fb_info *info;
499 struct intelfb_info *dinfo;
500 int i, err, dvo;
501 int aperture_size, stolen_size;
502 struct agp_kern_info gtt_info;
503 int agp_memtype;
504 const char *s;
505 struct agp_bridge_data *bridge;
506 int aperture_bar = 0;
507 int mmio_bar = 1;
508 int offset;
509
510 DBG_MSG("intelfb_pci_register\n");
511
512 num_registered++;
513 if (num_registered != 1) {
514 ERR_MSG("Attempted to register %d devices "
515 "(should be only 1).\n", num_registered);
516 return -ENODEV;
517 }
518
519 info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
520 if (!info) {
521 ERR_MSG("Could not allocate memory for intelfb_info.\n");
522 return -ENODEV;
523 }
524 if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
525 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
526 goto err_out_cmap;
527 return -ENODEV;
528 }
529
530 dinfo = info->par;
531 dinfo->info = info;
532 dinfo->fbops = &intel_fb_ops;
533 dinfo->pdev = pdev;
534
535 /* Reserve pixmap space. */
536 info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
537 if (info->pixmap.addr == NULL) {
538 ERR_MSG("Cannot reserve pixmap memory.\n");
539 goto err_out_pixmap;
540 }
541
542 /* set early this option because it could be changed by tv encoder
543 driver */
544 dinfo->fixed_mode = fixed;
545
546 /* Enable device. */
547 if ((err = pci_enable_device(pdev))) {
548 ERR_MSG("Cannot enable device.\n");
549 cleanup(dinfo);
550 return -ENODEV;
551 }
552
553 /* Set base addresses. */
554 if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
555 (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
556 (ent->device == PCI_DEVICE_ID_INTEL_945G) ||
557 (ent->device == PCI_DEVICE_ID_INTEL_945GM) ||
558 (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
559 (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
560
561 aperture_bar = 2;
562 mmio_bar = 0;
563 }
564 dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
565 dinfo->aperture.size = pci_resource_len(pdev, aperture_bar);
566 dinfo->mmio_base_phys = pci_resource_start(pdev, mmio_bar);
567 DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
568 (unsigned long long)pci_resource_start(pdev, aperture_bar),
569 (unsigned long long)pci_resource_len(pdev, aperture_bar),
570 (unsigned long long)pci_resource_start(pdev, mmio_bar),
571 (unsigned long long)pci_resource_len(pdev, mmio_bar));
572
573 /* Reserve the fb and MMIO regions */
574 if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
575 INTELFB_MODULE_NAME)) {
576 ERR_MSG("Cannot reserve FB region.\n");
577 cleanup(dinfo);
578 return -ENODEV;
579 }
580
581 dinfo->flag |= INTELFB_FB_ACQUIRED;
582
583 if (!request_mem_region(dinfo->mmio_base_phys,
584 INTEL_REG_SIZE,
585 INTELFB_MODULE_NAME)) {
586 ERR_MSG("Cannot reserve MMIO region.\n");
587 cleanup(dinfo);
588 return -ENODEV;
589 }
590
591 dinfo->flag |= INTELFB_MMIO_ACQUIRED;
592
593 /* Get the chipset info. */
594 dinfo->pci_chipset = pdev->device;
595
596 if (intelfbhw_get_chipset(pdev, dinfo)) {
597 cleanup(dinfo);
598 return -ENODEV;
599 }
600
601 if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
602 cleanup(dinfo);
603 return -ENODEV;
604 }
605
606 INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
607 "stolen memory %dkB\n",
608 pdev->bus->number, PCI_SLOT(pdev->devfn),
609 PCI_FUNC(pdev->devfn), dinfo->name,
610 BtoMB(aperture_size), BtoKB(stolen_size));
611
612 /* Set these from the options. */
613 dinfo->accel = accel;
614 dinfo->hwcursor = hwcursor;
615
616 if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
617 INF_MSG("Acceleration is not supported for the %s chipset.\n",
618 dinfo->name);
619 dinfo->accel = 0;
620 }
621
622 /* Framebuffer parameters - Use all the stolen memory if >= vram */
623 if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
624 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
625 dinfo->fbmem_gart = 0;
626 } else {
627 dinfo->fb.size = MB(vram);
628 dinfo->fbmem_gart = 1;
629 }
630
631 /* Allocate space for the ring buffer and HW cursor if enabled. */
632 if (dinfo->accel) {
633 dinfo->ring.size = RINGBUFFER_SIZE;
634 dinfo->ring_tail_mask = dinfo->ring.size - 1;
635 }
636 if (dinfo->hwcursor)
637 dinfo->cursor.size = HW_CURSOR_SIZE;
638
639 /* Use agpgart to manage the GATT */
640 if (!(bridge = agp_backend_acquire(pdev))) {
641 ERR_MSG("cannot acquire agp\n");
642 cleanup(dinfo);
643 return -ENODEV;
644 }
645
646 /* get the current gatt info */
647 if (agp_copy_info(bridge, >t_info)) {
648 ERR_MSG("cannot get agp info\n");
649 agp_backend_release(bridge);
650 cleanup(dinfo);
651 return -ENODEV;
652 }
653
654 if (MB(voffset) < stolen_size)
655 offset = (stolen_size >> 12);
656 else
657 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
658
659 /* set the mem offsets - set them after the already used pages */
660 if (dinfo->accel)
661 dinfo->ring.offset = offset + gtt_info.current_memory;
662 if (dinfo->hwcursor)
663 dinfo->cursor.offset = offset +
664 + gtt_info.current_memory + (dinfo->ring.size >> 12);
665 if (dinfo->fbmem_gart)
666 dinfo->fb.offset = offset +
667 + gtt_info.current_memory + (dinfo->ring.size >> 12)
668 + (dinfo->cursor.size >> 12);
669
670 /* Allocate memories (which aren't stolen) */
671 /* Map the fb and MMIO regions */
672 /* ioremap only up to the end of used aperture */
673 dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
674 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
675 + dinfo->fb.size);
676 if (!dinfo->aperture.virtual) {
677 ERR_MSG("Cannot remap FB region.\n");
678 cleanup(dinfo);
679 return -ENODEV;
680 }
681
682 dinfo->mmio_base =
683 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
684 INTEL_REG_SIZE);
685 if (!dinfo->mmio_base) {
686 ERR_MSG("Cannot remap MMIO region.\n");
687 cleanup(dinfo);
688 return -ENODEV;
689 }
690
691 if (dinfo->accel) {
692 if (!(dinfo->gtt_ring_mem =
693 agp_allocate_memory(bridge, dinfo->ring.size >> 12,
694 AGP_NORMAL_MEMORY))) {
695 ERR_MSG("cannot allocate ring buffer memory\n");
696 agp_backend_release(bridge);
697 cleanup(dinfo);
698 return -ENOMEM;
699 }
700 if (agp_bind_memory(dinfo->gtt_ring_mem,
701 dinfo->ring.offset)) {
702 ERR_MSG("cannot bind ring buffer memory\n");
703 agp_backend_release(bridge);
704 cleanup(dinfo);
705 return -EBUSY;
706 }
707 dinfo->ring.physical = dinfo->aperture.physical
708 + (dinfo->ring.offset << 12);
709 dinfo->ring.virtual = dinfo->aperture.virtual
710 + (dinfo->ring.offset << 12);
711 dinfo->ring_head = 0;
712 }
713 if (dinfo->hwcursor) {
714 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
715 : AGP_NORMAL_MEMORY;
716 if (!(dinfo->gtt_cursor_mem =
717 agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
718 agp_memtype))) {
719 ERR_MSG("cannot allocate cursor memory\n");
720 agp_backend_release(bridge);
721 cleanup(dinfo);
722 return -ENOMEM;
723 }
724 if (agp_bind_memory(dinfo->gtt_cursor_mem,
725 dinfo->cursor.offset)) {
726 ERR_MSG("cannot bind cursor memory\n");
727 agp_backend_release(bridge);
728 cleanup(dinfo);
729 return -EBUSY;
730 }
731 if (dinfo->mobile)
732 dinfo->cursor.physical
733 = dinfo->gtt_cursor_mem->physical;
734 else
735 dinfo->cursor.physical = dinfo->aperture.physical
736 + (dinfo->cursor.offset << 12);
737 dinfo->cursor.virtual = dinfo->aperture.virtual
738 + (dinfo->cursor.offset << 12);
739 }
740 if (dinfo->fbmem_gart) {
741 if (!(dinfo->gtt_fb_mem =
742 agp_allocate_memory(bridge, dinfo->fb.size >> 12,
743 AGP_NORMAL_MEMORY))) {
744 WRN_MSG("cannot allocate framebuffer memory - use "
745 "the stolen one\n");
746 dinfo->fbmem_gart = 0;
747 }
748 if (agp_bind_memory(dinfo->gtt_fb_mem,
749 dinfo->fb.offset)) {
750 WRN_MSG("cannot bind framebuffer memory - use "
751 "the stolen one\n");
752 dinfo->fbmem_gart = 0;
753 }
754 }
755
756 /* update framebuffer memory parameters */
757 if (!dinfo->fbmem_gart)
758 dinfo->fb.offset = 0; /* starts at offset 0 */
759 dinfo->fb.physical = dinfo->aperture.physical
760 + (dinfo->fb.offset << 12);
761 dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
762 dinfo->fb_start = dinfo->fb.offset << 12;
763
764 /* release agpgart */
765 agp_backend_release(bridge);
766
767 if (mtrr)
768 set_mtrr(dinfo);
769
770 DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
771 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
772 dinfo->fb.virtual);
773 DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
774 dinfo->mmio_base_phys, INTEL_REG_SIZE,
775 dinfo->mmio_base);
776 DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
777 dinfo->ring.physical, dinfo->ring.size,
778 dinfo->ring.virtual);
779 DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
780 dinfo->cursor.physical, dinfo->cursor.size,
781 dinfo->cursor.virtual, dinfo->cursor.offset,
782 dinfo->cursor.physical);
783
784 DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
785 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
786 DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
787
788 if (probeonly)
789 bailout(dinfo);
790
791 /*
792 * Check if the LVDS port or any DVO ports are enabled. If so,
793 * don't allow mode switching
794 */
795 dvo = intelfbhw_check_non_crt(dinfo);
796 if (dvo) {
797 dinfo->fixed_mode = 1;
798 WRN_MSG("Non-CRT device is enabled ( ");
799 i = 0;
800 while (dvo) {
801 if (dvo & 1) {
802 s = intelfbhw_dvo_to_string(1 << i);
803 if (s)
804 printk("%s ", s);
805 }
806 dvo >>= 1;
807 ++i;
808 }
809 printk("). Disabling mode switching.\n");
810 }
811
812 if (bailearly == 1)
813 bailout(dinfo);
814
815 if (FIXED_MODE(dinfo) &&
816 screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
817 ERR_MSG("Video mode must be programmed at boot time.\n");
818 cleanup(dinfo);
819 return -ENODEV;
820 }
821
822 if (bailearly == 2)
823 bailout(dinfo);
824
825 /* Initialise dinfo and related data. */
826 /* If an initial mode was programmed at boot time, get its details. */
827 if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
828 get_initial_mode(dinfo);
829
830 if (bailearly == 3)
831 bailout(dinfo);
832
833 if (FIXED_MODE(dinfo)) /* remap fb address */
834 update_dinfo(dinfo, &dinfo->initial_var);
835
836 if (bailearly == 4)
837 bailout(dinfo);
838
839
840 if (intelfb_set_fbinfo(dinfo)) {
841 cleanup(dinfo);
842 return -ENODEV;
843 }
844
845 if (bailearly == 5)
846 bailout(dinfo);
847
848#ifdef CONFIG_FB_INTEL_I2C
849 /* register I2C bus */
850 intelfb_create_i2c_busses(dinfo);
851#endif
852
853 if (bailearly == 6)
854 bailout(dinfo);
855
856 pci_set_drvdata(pdev, dinfo);
857
858 /* Save the initial register state. */
859 i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
860 bailearly > 6 ? bailearly - 6 : 0);
861 if (i != 0) {
862 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
863 bailout(dinfo);
864 }
865
866 intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
867
868 if (bailearly == 18)
869 bailout(dinfo);
870
871 /* Cursor initialisation */
872 if (dinfo->hwcursor) {
873 intelfbhw_cursor_init(dinfo);
874 intelfbhw_cursor_reset(dinfo);
875 }
876
877 if (bailearly == 19)
878 bailout(dinfo);
879
880 /* 2d acceleration init */
881 if (dinfo->accel)
882 intelfbhw_2d_start(dinfo);
883
884 if (bailearly == 20)
885 bailout(dinfo);
886
887 if (noregister)
888 bailout(dinfo);
889
890 if (register_framebuffer(dinfo->info) < 0) {
891 ERR_MSG("Cannot register framebuffer.\n");
892 cleanup(dinfo);
893 return -ENODEV;
894 }
895
896 dinfo->registered = 1;
897 dinfo->open = 0;
898
899 init_waitqueue_head(&dinfo->vsync.wait);
900 spin_lock_init(&dinfo->int_lock);
901 dinfo->irq_flags = 0;
902 dinfo->vsync.pan_display = 0;
903 dinfo->vsync.pan_offset = 0;
904
905 return 0;
906
907err_out_pixmap:
908 fb_dealloc_cmap(&info->cmap);
909err_out_cmap:
910 framebuffer_release(info);
911 return -ENODEV;
912}
913
914static void __devexit
915intelfb_pci_unregister(struct pci_dev *pdev)
916{
917 struct intelfb_info *dinfo = pci_get_drvdata(pdev);
918
919 DBG_MSG("intelfb_pci_unregister\n");
920
921 if (!dinfo)
922 return;
923
924 cleanup(dinfo);
925
926 pci_set_drvdata(pdev, NULL);
927}
928
929/***************************************************************
930 * helper functions *
931 ***************************************************************/
932
933int __inline__ intelfb_var_to_depth(const struct fb_var_screeninfo *var)
934{
935 DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
936 var->bits_per_pixel, var->green.length);
937
938 switch (var->bits_per_pixel) {
939 case 16:
940 return (var->green.length == 6) ? 16 : 15;
941 case 32:
942 return 24;
943 default:
944 return var->bits_per_pixel;
945 }
946}
947
948
949static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
950{
951 int xtot = var->xres + var->left_margin + var->right_margin +
952 var->hsync_len;
953 int ytot = var->yres + var->upper_margin + var->lower_margin +
954 var->vsync_len;
955
956 return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
957}
958
959/***************************************************************
960 * Various intialisation functions *
961 ***************************************************************/
962
963static void __devinit get_initial_mode(struct intelfb_info *dinfo)
964{
965 struct fb_var_screeninfo *var;
966 int xtot, ytot;
967
968 DBG_MSG("get_initial_mode\n");
969
970 dinfo->initial_vga = 1;
971 dinfo->initial_fb_base = screen_info.lfb_base;
972 dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
973 dinfo->initial_pitch = screen_info.lfb_linelength;
974
975 var = &dinfo->initial_var;
976 memset(var, 0, sizeof(*var));
977 var->xres = screen_info.lfb_width;
978 var->yres = screen_info.lfb_height;
979 var->bits_per_pixel = screen_info.lfb_depth;
980 switch (screen_info.lfb_depth) {
981 case 15:
982 var->bits_per_pixel = 16;
983 break;
984 case 24:
985 var->bits_per_pixel = 32;
986 break;
987 }
988
989 DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
990 dinfo->initial_fb_base, dinfo->initial_video_ram,
991 BtoKB(dinfo->initial_video_ram));
992
993 DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
994 var->xres, var->yres, var->bits_per_pixel,
995 dinfo->initial_pitch);
996
997 /* Dummy timing values (assume 60Hz) */
998 var->left_margin = (var->xres / 8) & 0xf8;
999 var->right_margin = 32;
1000 var->upper_margin = 16;
1001 var->lower_margin = 4;
1002 var->hsync_len = (var->xres / 8) & 0xf8;
1003 var->vsync_len = 4;
1004
1005 xtot = var->xres + var->left_margin +
1006 var->right_margin + var->hsync_len;
1007 ytot = var->yres + var->upper_margin +
1008 var->lower_margin + var->vsync_len;
1009 var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1010
1011 var->height = -1;
1012 var->width = -1;
1013
1014 if (var->bits_per_pixel > 8) {
1015 var->red.offset = screen_info.red_pos;
1016 var->red.length = screen_info.red_size;
1017 var->green.offset = screen_info.green_pos;
1018 var->green.length = screen_info.green_size;
1019 var->blue.offset = screen_info.blue_pos;
1020 var->blue.length = screen_info.blue_size;
1021 var->transp.offset = screen_info.rsvd_pos;
1022 var->transp.length = screen_info.rsvd_size;
1023 } else {
1024 var->red.length = 8;
1025 var->green.length = 8;
1026 var->blue.length = 8;
1027 }
1028}
1029
1030static int __devinit intelfb_init_var(struct intelfb_info *dinfo)
1031{
1032 struct fb_var_screeninfo *var;
1033 int msrc = 0;
1034
1035 DBG_MSG("intelfb_init_var\n");
1036
1037 var = &dinfo->info->var;
1038 if (FIXED_MODE(dinfo)) {
1039 memcpy(var, &dinfo->initial_var,
1040 sizeof(struct fb_var_screeninfo));
1041 msrc = 5;
1042 } else {
1043 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1044 u8 *edid_d = NULL;
1045
1046 if (edid_s) {
1047 edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1048
1049 if (edid_d) {
1050 fb_edid_to_monspecs(edid_d,
1051 &dinfo->info->monspecs);
1052 kfree(edid_d);
1053 }
1054 }
1055
1056 if (mode) {
1057 printk("intelfb: Looking for mode in private "
1058 "database\n");
1059 msrc = fb_find_mode(var, dinfo->info, mode,
1060 dinfo->info->monspecs.modedb,
1061 dinfo->info->monspecs.modedb_len,
1062 NULL, 0);
1063
1064 if (msrc && msrc > 1) {
1065 printk("intelfb: No mode in private database, "
1066 "intelfb: looking for mode in global "
1067 "database ");
1068 msrc = fb_find_mode(var, dinfo->info, mode,
1069 NULL, 0, NULL, 0);
1070
1071 if (msrc)
1072 msrc |= 8;
1073 }
1074
1075 }
1076
1077 if (!msrc)
1078 msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1079 NULL, 0, NULL, 0);
1080 }
1081
1082 if (!msrc) {
1083 ERR_MSG("Cannot find a suitable video mode.\n");
1084 return 1;
1085 }
1086
1087 INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1088 var->bits_per_pixel, var_to_refresh(var));
1089
1090 DBG_MSG("Initial video mode is from %d.\n", msrc);
1091
1092#if ALLOCATE_FOR_PANNING
1093 /* Allow use of half of the video ram for panning */
1094 var->xres_virtual = var->xres;
1095 var->yres_virtual =
1096 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1097 if (var->yres_virtual < var->yres)
1098 var->yres_virtual = var->yres;
1099#else
1100 var->yres_virtual = var->yres;
1101#endif
1102
1103 if (dinfo->accel)
1104 var->accel_flags |= FB_ACCELF_TEXT;
1105 else
1106 var->accel_flags &= ~FB_ACCELF_TEXT;
1107
1108 return 0;
1109}
1110
1111static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo)
1112{
1113 struct fb_info *info = dinfo->info;
1114
1115 DBG_MSG("intelfb_set_fbinfo\n");
1116
1117 info->flags = FBINFO_FLAG_DEFAULT;
1118 info->fbops = &intel_fb_ops;
1119 info->pseudo_palette = dinfo->pseudo_palette;
1120
1121 info->pixmap.size = 64*1024;
1122 info->pixmap.buf_align = 8;
1123 info->pixmap.access_align = 32;
1124 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1125
1126 if (intelfb_init_var(dinfo))
1127 return 1;
1128
1129 info->pixmap.scan_align = 1;
1130 strcpy(info->fix.id, dinfo->name);
1131 info->fix.smem_start = dinfo->fb.physical;
1132 info->fix.smem_len = dinfo->fb.size;
1133 info->fix.type = FB_TYPE_PACKED_PIXELS;
1134 info->fix.type_aux = 0;
1135 info->fix.xpanstep = 8;
1136 info->fix.ypanstep = 1;
1137 info->fix.ywrapstep = 0;
1138 info->fix.mmio_start = dinfo->mmio_base_phys;
1139 info->fix.mmio_len = INTEL_REG_SIZE;
1140 info->fix.accel = FB_ACCEL_I830;
1141 update_dinfo(dinfo, &info->var);
1142
1143 return 0;
1144}
1145
1146/* Update dinfo to match the active video mode. */
1147static void update_dinfo(struct intelfb_info *dinfo,
1148 struct fb_var_screeninfo *var)
1149{
1150 DBG_MSG("update_dinfo\n");
1151
1152 dinfo->bpp = var->bits_per_pixel;
1153 dinfo->depth = intelfb_var_to_depth(var);
1154 dinfo->xres = var->xres;
1155 dinfo->yres = var->xres;
1156 dinfo->pixclock = var->pixclock;
1157
1158 dinfo->info->fix.visual = dinfo->visual;
1159 dinfo->info->fix.line_length = dinfo->pitch;
1160
1161 switch (dinfo->bpp) {
1162 case 8:
1163 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1164 dinfo->pitch = var->xres_virtual;
1165 break;
1166 case 16:
1167 dinfo->visual = FB_VISUAL_TRUECOLOR;
1168 dinfo->pitch = var->xres_virtual * 2;
1169 break;
1170 case 32:
1171 dinfo->visual = FB_VISUAL_TRUECOLOR;
1172 dinfo->pitch = var->xres_virtual * 4;
1173 break;
1174 }
1175
1176 /* Make sure the line length is a aligned correctly. */
1177 if (IS_I9XX(dinfo))
1178 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1179 else
1180 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1181
1182 if (FIXED_MODE(dinfo))
1183 dinfo->pitch = dinfo->initial_pitch;
1184
1185 dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1186 dinfo->info->fix.line_length = dinfo->pitch;
1187 dinfo->info->fix.visual = dinfo->visual;
1188}
1189
1190/* fbops functions */
1191
1192/***************************************************************
1193 * fbdev interface *
1194 ***************************************************************/
1195
1196static int intelfb_open(struct fb_info *info, int user)
1197{
1198 struct intelfb_info *dinfo = GET_DINFO(info);
1199
1200 if (user)
1201 dinfo->open++;
1202
1203 return 0;
1204}
1205
1206static int intelfb_release(struct fb_info *info, int user)
1207{
1208 struct intelfb_info *dinfo = GET_DINFO(info);
1209
1210 if (user) {
1211 dinfo->open--;
1212 msleep(1);
1213 if (!dinfo->open)
1214 intelfbhw_disable_irq(dinfo);
1215 }
1216
1217 return 0;
1218}
1219
1220static int intelfb_check_var(struct fb_var_screeninfo *var,
1221 struct fb_info *info)
1222{
1223 int change_var = 0;
1224 struct fb_var_screeninfo v;
1225 struct intelfb_info *dinfo;
1226 static int first = 1;
1227 int i;
1228 /* Good pitches to allow tiling. Don't care about pitches < 1024. */
1229 static const int pitches[] = {
1230 128 * 8,
1231 128 * 16,
1232 128 * 32,
1233 128 * 64,
1234 0
1235 };
1236
1237 DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1238
1239 dinfo = GET_DINFO(info);
1240
1241 /* update the pitch */
1242 if (intelfbhw_validate_mode(dinfo, var) != 0)
1243 return -EINVAL;
1244
1245 v = *var;
1246
1247 for (i = 0; pitches[i] != 0; i++) {
1248 if (pitches[i] >= v.xres_virtual) {
1249 v.xres_virtual = pitches[i];
1250 break;
1251 }
1252 }
1253
1254 /* Check for a supported bpp. */
1255 if (v.bits_per_pixel <= 8)
1256 v.bits_per_pixel = 8;
1257 else if (v.bits_per_pixel <= 16) {
1258 if (v.bits_per_pixel == 16)
1259 v.green.length = 6;
1260 v.bits_per_pixel = 16;
1261 } else if (v.bits_per_pixel <= 32)
1262 v.bits_per_pixel = 32;
1263 else
1264 return -EINVAL;
1265
1266 change_var = ((info->var.xres != var->xres) ||
1267 (info->var.yres != var->yres) ||
1268 (info->var.xres_virtual != var->xres_virtual) ||
1269 (info->var.yres_virtual != var->yres_virtual) ||
1270 (info->var.bits_per_pixel != var->bits_per_pixel) ||
1271 memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1272 memcmp(&info->var.green, &var->green,
1273 sizeof(var->green)) ||
1274 memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1275
1276 if (FIXED_MODE(dinfo) &&
1277 (change_var ||
1278 var->yres_virtual > dinfo->initial_var.yres_virtual ||
1279 var->yres_virtual < dinfo->initial_var.yres ||
1280 var->xoffset || var->nonstd)) {
1281 if (first) {
1282 ERR_MSG("Changing the video mode is not supported.\n");
1283 first = 0;
1284 }
1285 return -EINVAL;
1286 }
1287
1288 switch (intelfb_var_to_depth(&v)) {
1289 case 8:
1290 v.red.offset = v.green.offset = v.blue.offset = 0;
1291 v.red.length = v.green.length = v.blue.length = 8;
1292 v.transp.offset = v.transp.length = 0;
1293 break;
1294 case 15:
1295 v.red.offset = 10;
1296 v.green.offset = 5;
1297 v.blue.offset = 0;
1298 v.red.length = v.green.length = v.blue.length = 5;
1299 v.transp.offset = v.transp.length = 0;
1300 break;
1301 case 16:
1302 v.red.offset = 11;
1303 v.green.offset = 5;
1304 v.blue.offset = 0;
1305 v.red.length = 5;
1306 v.green.length = 6;
1307 v.blue.length = 5;
1308 v.transp.offset = v.transp.length = 0;
1309 break;
1310 case 24:
1311 v.red.offset = 16;
1312 v.green.offset = 8;
1313 v.blue.offset = 0;
1314 v.red.length = v.green.length = v.blue.length = 8;
1315 v.transp.offset = v.transp.length = 0;
1316 break;
1317 case 32:
1318 v.red.offset = 16;
1319 v.green.offset = 8;
1320 v.blue.offset = 0;
1321 v.red.length = v.green.length = v.blue.length = 8;
1322 v.transp.offset = 24;
1323 v.transp.length = 8;
1324 break;
1325 }
1326
1327 if (v.xoffset < 0)
1328 v.xoffset = 0;
1329 if (v.yoffset < 0)
1330 v.yoffset = 0;
1331
1332 if (v.xoffset > v.xres_virtual - v.xres)
1333 v.xoffset = v.xres_virtual - v.xres;
1334 if (v.yoffset > v.yres_virtual - v.yres)
1335 v.yoffset = v.yres_virtual - v.yres;
1336
1337 v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1338 v.transp.msb_right = 0;
1339
1340 *var = v;
1341
1342 return 0;
1343}
1344
1345static int intelfb_set_par(struct fb_info *info)
1346{
1347 struct intelfb_hwstate *hw;
1348 struct intelfb_info *dinfo = GET_DINFO(info);
1349
1350 if (FIXED_MODE(dinfo)) {
1351 ERR_MSG("Changing the video mode is not supported.\n");
1352 return -EINVAL;
1353 }
1354
1355 hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1356 if (!hw)
1357 return -ENOMEM;
1358
1359 DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1360 info->var.yres, info->var.bits_per_pixel);
1361
1362 intelfb_blank(FB_BLANK_POWERDOWN, info);
1363
1364 if (ACCEL(dinfo, info))
1365 intelfbhw_2d_stop(dinfo);
1366
1367 memcpy(hw, &dinfo->save_state, sizeof(*hw));
1368 if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1369 goto invalid_mode;
1370 if (intelfbhw_program_mode(dinfo, hw, 0))
1371 goto invalid_mode;
1372
1373#if REGDUMP > 0
1374 intelfbhw_read_hw_state(dinfo, hw, 0);
1375 intelfbhw_print_hw_state(dinfo, hw);
1376#endif
1377
1378 update_dinfo(dinfo, &info->var);
1379
1380 if (ACCEL(dinfo, info))
1381 intelfbhw_2d_start(dinfo);
1382
1383 intelfb_pan_display(&info->var, info);
1384
1385 intelfb_blank(FB_BLANK_UNBLANK, info);
1386
1387 if (ACCEL(dinfo, info)) {
1388 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1389 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1390 FBINFO_HWACCEL_IMAGEBLIT;
1391 } else
1392 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1393
1394 kfree(hw);
1395 return 0;
1396invalid_mode:
1397 kfree(hw);
1398 return -EINVAL;
1399}
1400
1401static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1402 unsigned blue, unsigned transp,
1403 struct fb_info *info)
1404{
1405 struct intelfb_info *dinfo = GET_DINFO(info);
1406
1407#if VERBOSE > 0
1408 DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1409#endif
1410
1411 if (regno > 255)
1412 return 1;
1413
1414 if (dinfo->depth == 8) {
1415 red >>= 8;
1416 green >>= 8;
1417 blue >>= 8;
1418
1419 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1420 transp);
1421 }
1422
1423 if (regno < 16) {
1424 switch (dinfo->depth) {
1425 case 15:
1426 dinfo->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
1427 ((green & 0xf800) >> 6) |
1428 ((blue & 0xf800) >> 11);
1429 break;
1430 case 16:
1431 dinfo->pseudo_palette[regno] = (red & 0xf800) |
1432 ((green & 0xfc00) >> 5) |
1433 ((blue & 0xf800) >> 11);
1434 break;
1435 case 24:
1436 dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1437 (green & 0xff00) |
1438 ((blue & 0xff00) >> 8);
1439 break;
1440 }
1441 }
1442
1443 return 0;
1444}
1445
1446static int intelfb_blank(int blank, struct fb_info *info)
1447{
1448 intelfbhw_do_blank(blank, info);
1449 return 0;
1450}
1451
1452static int intelfb_pan_display(struct fb_var_screeninfo *var,
1453 struct fb_info *info)
1454{
1455 intelfbhw_pan_display(var, info);
1456 return 0;
1457}
1458
1459/* When/if we have our own ioctls. */
1460static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1461 unsigned long arg)
1462{
1463 int retval = 0;
1464 struct intelfb_info *dinfo = GET_DINFO(info);
1465 u32 pipe = 0;
1466
1467 switch (cmd) {
1468 case FBIO_WAITFORVSYNC:
1469 if (get_user(pipe, (__u32 __user *)arg))
1470 return -EFAULT;
1471
1472 retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1473 break;
1474 default:
1475 break;
1476 }
1477
1478 return retval;
1479}
1480
1481static void intelfb_fillrect (struct fb_info *info,
1482 const struct fb_fillrect *rect)
1483{
1484 struct intelfb_info *dinfo = GET_DINFO(info);
1485 u32 rop, color;
1486
1487#if VERBOSE > 0
1488 DBG_MSG("intelfb_fillrect\n");
1489#endif
1490
1491 if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1492 return cfb_fillrect(info, rect);
1493
1494 if (rect->rop == ROP_COPY)
1495 rop = PAT_ROP_GXCOPY;
1496 else /* ROP_XOR */
1497 rop = PAT_ROP_GXXOR;
1498
1499 if (dinfo->depth != 8)
1500 color = dinfo->pseudo_palette[rect->color];
1501 else
1502 color = rect->color;
1503
1504 intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1505 rect->width, rect->height, color,
1506 dinfo->pitch, info->var.bits_per_pixel,
1507 rop);
1508}
1509
1510static void intelfb_copyarea(struct fb_info *info,
1511 const struct fb_copyarea *region)
1512{
1513 struct intelfb_info *dinfo = GET_DINFO(info);
1514
1515#if VERBOSE > 0
1516 DBG_MSG("intelfb_copyarea\n");
1517#endif
1518
1519 if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1520 return cfb_copyarea(info, region);
1521
1522 intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1523 region->dy, region->width, region->height,
1524 dinfo->pitch, info->var.bits_per_pixel);
1525}
1526
1527static void intelfb_imageblit(struct fb_info *info,
1528 const struct fb_image *image)
1529{
1530 struct intelfb_info *dinfo = GET_DINFO(info);
1531 u32 fgcolor, bgcolor;
1532
1533#if VERBOSE > 0
1534 DBG_MSG("intelfb_imageblit\n");
1535#endif
1536
1537 if (!ACCEL(dinfo, info) || dinfo->depth == 4
1538 || image->depth != 1)
1539 return cfb_imageblit(info, image);
1540
1541 if (dinfo->depth != 8) {
1542 fgcolor = dinfo->pseudo_palette[image->fg_color];
1543 bgcolor = dinfo->pseudo_palette[image->bg_color];
1544 } else {
1545 fgcolor = image->fg_color;
1546 bgcolor = image->bg_color;
1547 }
1548
1549 if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1550 image->height, image->data,
1551 image->dx, image->dy,
1552 dinfo->pitch, info->var.bits_per_pixel))
1553 return cfb_imageblit(info, image);
1554}
1555
1556static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1557{
1558 struct intelfb_info *dinfo = GET_DINFO(info);
1559 u32 physical;
1560#if VERBOSE > 0
1561 DBG_MSG("intelfb_cursor\n");
1562#endif
1563
1564 if (!dinfo->hwcursor)
1565 return -ENODEV;
1566
1567 intelfbhw_cursor_hide(dinfo);
1568
1569 /* If XFree killed the cursor - restore it */
1570 physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1571 (dinfo->cursor.offset << 12);
1572
1573 if (INREG(CURSOR_A_BASEADDR) != physical) {
1574 u32 fg, bg;
1575
1576 DBG_MSG("the cursor was killed - restore it !!\n");
1577 DBG_MSG("size %d, %d pos %d, %d\n",
1578 cursor->image.width, cursor->image.height,
1579 cursor->image.dx, cursor->image.dy);
1580
1581 intelfbhw_cursor_init(dinfo);
1582 intelfbhw_cursor_reset(dinfo);
1583 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1584 cursor->image.dy);
1585
1586 if (dinfo->depth != 8) {
1587 fg =dinfo->pseudo_palette[cursor->image.fg_color];
1588 bg =dinfo->pseudo_palette[cursor->image.bg_color];
1589 } else {
1590 fg = cursor->image.fg_color;
1591 bg = cursor->image.bg_color;
1592 }
1593 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1594 intelfbhw_cursor_load(dinfo, cursor->image.width,
1595 cursor->image.height,
1596 dinfo->cursor_src);
1597
1598 if (cursor->enable)
1599 intelfbhw_cursor_show(dinfo);
1600 return 0;
1601 }
1602
1603 if (cursor->set & FB_CUR_SETPOS) {
1604 u32 dx, dy;
1605
1606 dx = cursor->image.dx - info->var.xoffset;
1607 dy = cursor->image.dy - info->var.yoffset;
1608
1609 intelfbhw_cursor_setpos(dinfo, dx, dy);
1610 }
1611
1612 if (cursor->set & FB_CUR_SETSIZE) {
1613 if (cursor->image.width > 64 || cursor->image.height > 64)
1614 return -ENXIO;
1615
1616 intelfbhw_cursor_reset(dinfo);
1617 }
1618
1619 if (cursor->set & FB_CUR_SETCMAP) {
1620 u32 fg, bg;
1621
1622 if (dinfo->depth != 8) {
1623 fg = dinfo->pseudo_palette[cursor->image.fg_color];
1624 bg = dinfo->pseudo_palette[cursor->image.bg_color];
1625 } else {
1626 fg = cursor->image.fg_color;
1627 bg = cursor->image.bg_color;
1628 }
1629
1630 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1631 }
1632
1633 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1634 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1635 u32 size = s_pitch * cursor->image.height;
1636 u8 *dat = (u8 *) cursor->image.data;
1637 u8 *msk = (u8 *) cursor->mask;
1638 u8 src[64];
1639 u32 i;
1640
1641 if (cursor->image.depth != 1)
1642 return -ENXIO;
1643
1644 switch (cursor->rop) {
1645 case ROP_XOR:
1646 for (i = 0; i < size; i++)
1647 src[i] = dat[i] ^ msk[i];
1648 break;
1649 case ROP_COPY:
1650 default:
1651 for (i = 0; i < size; i++)
1652 src[i] = dat[i] & msk[i];
1653 break;
1654 }
1655
1656 /* save the bitmap to restore it when XFree will
1657 make the cursor dirty */
1658 memcpy(dinfo->cursor_src, src, size);
1659
1660 intelfbhw_cursor_load(dinfo, cursor->image.width,
1661 cursor->image.height, src);
1662 }
1663
1664 if (cursor->enable)
1665 intelfbhw_cursor_show(dinfo);
1666
1667 return 0;
1668}
1669
1670static int intelfb_sync(struct fb_info *info)
1671{
1672 struct intelfb_info *dinfo = GET_DINFO(info);
1673
1674#if VERBOSE > 0
1675 DBG_MSG("intelfb_sync\n");
1676#endif
1677
1678 if (dinfo->ring_lockup)
1679 return 0;
1680
1681 intelfbhw_do_sync(dinfo);
1682 return 0;
1683}
1684