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intelfbdrv.c
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1 /*
2  * intelfb
3  *
4  * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM/
5  * 945G/945GM/945GME/965G/965GM integrated graphics chips.
6  *
7  * Copyright © 2002, 2003 David Dawes <[email protected]>
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 <[email protected]>)
105  *
106  * 08/2008 - Version 0.9.6
107  * Add support for 945GME. (Phil Endecott <[email protected]>)
108  */
109 
110 #include <linux/module.h>
111 #include <linux/kernel.h>
112 #include <linux/errno.h>
113 #include <linux/string.h>
114 #include <linux/mm.h>
115 #include <linux/slab.h>
116 #include <linux/delay.h>
117 #include <linux/fb.h>
118 #include <linux/ioport.h>
119 #include <linux/init.h>
120 #include <linux/pci.h>
121 #include <linux/vmalloc.h>
122 #include <linux/pagemap.h>
123 #include <linux/screen_info.h>
124 
125 #include <asm/io.h>
126 
127 #ifdef CONFIG_MTRR
128 #include <asm/mtrr.h>
129 #endif
130 
131 #include "intelfb.h"
132 #include "intelfbhw.h"
133 #include "../edid.h"
134 
135 static void __devinit get_initial_mode(struct intelfb_info *dinfo);
136 static void update_dinfo(struct intelfb_info *dinfo,
137  struct fb_var_screeninfo *var);
138 static int intelfb_open(struct fb_info *info, int user);
139 static int intelfb_release(struct fb_info *info, int user);
140 static int intelfb_check_var(struct fb_var_screeninfo *var,
141  struct fb_info *info);
142 static int intelfb_set_par(struct fb_info *info);
143 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
144  unsigned blue, unsigned transp,
145  struct fb_info *info);
146 
147 static int intelfb_blank(int blank, struct fb_info *info);
148 static int intelfb_pan_display(struct fb_var_screeninfo *var,
149  struct fb_info *info);
150 
151 static void intelfb_fillrect(struct fb_info *info,
152  const struct fb_fillrect *rect);
153 static void intelfb_copyarea(struct fb_info *info,
154  const struct fb_copyarea *region);
155 static void intelfb_imageblit(struct fb_info *info,
156  const struct fb_image *image);
157 static int intelfb_cursor(struct fb_info *info,
158  struct fb_cursor *cursor);
159 
160 static int intelfb_sync(struct fb_info *info);
161 
162 static int intelfb_ioctl(struct fb_info *info,
163  unsigned int cmd, unsigned long arg);
164 
165 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
166  const struct pci_device_id *ent);
167 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
168 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
169 
170 /*
171  * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
172  * mobile chipsets from being registered.
173  */
174 #if DETECT_VGA_CLASS_ONLY
175 #define INTELFB_CLASS_MASK ~0 << 8
176 #else
177 #define INTELFB_CLASS_MASK 0
178 #endif
179 
180 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
181  { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_830M, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_830M },
182  { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_845G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_845G },
183  { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_85XGM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_85XGM },
184  { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_865G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_865G },
185  { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_854, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_854 },
186  { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915G },
187  { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915GM },
188  { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945G },
189  { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GM },
190  { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GME, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GME },
191  { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_965G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965G },
192  { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_965GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965GM },
193  { 0, }
194 };
195 
196 /* Global data */
197 static int num_registered = 0;
198 
199 /* fb ops */
200 static struct fb_ops intel_fb_ops = {
201  .owner = THIS_MODULE,
202  .fb_open = intelfb_open,
203  .fb_release = intelfb_release,
204  .fb_check_var = intelfb_check_var,
205  .fb_set_par = intelfb_set_par,
206  .fb_setcolreg = intelfb_setcolreg,
207  .fb_blank = intelfb_blank,
208  .fb_pan_display = intelfb_pan_display,
209  .fb_fillrect = intelfb_fillrect,
210  .fb_copyarea = intelfb_copyarea,
211  .fb_imageblit = intelfb_imageblit,
212  .fb_cursor = intelfb_cursor,
213  .fb_sync = intelfb_sync,
214  .fb_ioctl = intelfb_ioctl
215 };
216 
217 /* PCI driver module table */
218 static struct pci_driver intelfb_driver = {
219  .name = "intelfb",
220  .id_table = intelfb_pci_table,
221  .probe = intelfb_pci_register,
222  .remove = __devexit_p(intelfb_pci_unregister)
223 };
224 
225 /* Module description/parameters */
226 MODULE_AUTHOR("David Dawes <[email protected]>, "
227  "Sylvain Meyer <[email protected]>");
228 MODULE_DESCRIPTION("Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS
229  " chipsets");
230 MODULE_LICENSE("Dual BSD/GPL");
231 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
232 
233 static bool accel = 1;
234 static int vram = 4;
235 static bool hwcursor = 0;
236 static bool mtrr = 1;
237 static bool fixed = 0;
238 static bool noinit = 0;
239 static bool noregister = 0;
240 static bool probeonly = 0;
241 static bool idonly = 0;
242 static int bailearly = 0;
243 static int voffset = 48;
244 static char *mode = NULL;
245 
246 module_param(accel, bool, S_IRUGO);
247 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
248 module_param(vram, int, S_IRUGO);
249 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
250 module_param(voffset, int, S_IRUGO);
251 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
252 module_param(hwcursor, bool, S_IRUGO);
253 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
254 module_param(mtrr, bool, S_IRUGO);
255 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
256 module_param(fixed, bool, S_IRUGO);
257 MODULE_PARM_DESC(fixed, "Disable mode switching");
258 module_param(noinit, bool, 0);
259 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
260 module_param(noregister, bool, 0);
261 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
262 module_param(probeonly, bool, 0);
263 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
264 module_param(idonly, bool, 0);
265 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
266 module_param(bailearly, int, 0);
267 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
268 module_param(mode, charp, S_IRUGO);
269 MODULE_PARM_DESC(mode,
270  "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
271 
272 #ifndef MODULE
273 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
274 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
275 #define OPT_STRVAL(opt, name) (opt + strlen(name))
276 
277 static __inline__ char * get_opt_string(const char *this_opt, const char *name)
278 {
279  const char *p;
280  int i;
281  char *ret;
282 
283  p = OPT_STRVAL(this_opt, name);
284  i = 0;
285  while (p[i] && p[i] != ' ' && p[i] != ',')
286  i++;
287  ret = kmalloc(i + 1, GFP_KERNEL);
288  if (ret) {
289  strncpy(ret, p, i);
290  ret[i] = '\0';
291  }
292  return ret;
293 }
294 
295 static __inline__ int get_opt_int(const char *this_opt, const char *name,
296  int *ret)
297 {
298  if (!ret)
299  return 0;
300 
301  if (!OPT_EQUAL(this_opt, name))
302  return 0;
303 
304  *ret = OPT_INTVAL(this_opt, name);
305  return 1;
306 }
307 
308 static __inline__ int get_opt_bool(const char *this_opt, const char *name,
309  int *ret)
310 {
311  if (!ret)
312  return 0;
313 
314  if (OPT_EQUAL(this_opt, name)) {
315  if (this_opt[strlen(name)] == '=')
316  *ret = simple_strtoul(this_opt + strlen(name) + 1,
317  NULL, 0);
318  else
319  *ret = 1;
320  } else {
321  if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
322  *ret = 0;
323  else
324  return 0;
325  }
326  return 1;
327 }
328 
329 static int __init intelfb_setup(char *options)
330 {
331  char *this_opt;
332 
333  DBG_MSG("intelfb_setup\n");
334 
335  if (!options || !*options) {
336  DBG_MSG("no options\n");
337  return 0;
338  } else
339  DBG_MSG("options: %s\n", options);
340 
341  /*
342  * These are the built-in options analogous to the module parameters
343  * defined above.
344  *
345  * The syntax is:
346  *
347  * video=intelfb:[mode][,<param>=<val>] ...
348  *
349  * e.g.,
350  *
351  * video=intelfb:1024x768-16@75,accel=0
352  */
353 
354  while ((this_opt = strsep(&options, ","))) {
355  if (!*this_opt)
356  continue;
357  if (get_opt_bool(this_opt, "accel", &accel))
358  ;
359  else if (get_opt_int(this_opt, "vram", &vram))
360  ;
361  else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
362  ;
363  else if (get_opt_bool(this_opt, "mtrr", &mtrr))
364  ;
365  else if (get_opt_bool(this_opt, "fixed", &fixed))
366  ;
367  else if (get_opt_bool(this_opt, "init", &noinit))
368  noinit = !noinit;
369  else if (OPT_EQUAL(this_opt, "mode="))
370  mode = get_opt_string(this_opt, "mode=");
371  else
372  mode = this_opt;
373  }
374 
375  return 0;
376 }
377 
378 #endif
379 
380 static int __init intelfb_init(void)
381 {
382 #ifndef MODULE
383  char *option = NULL;
384 #endif
385 
386  DBG_MSG("intelfb_init\n");
387 
388  INF_MSG("Framebuffer driver for "
389  "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
390  INF_MSG("Version " INTELFB_VERSION "\n");
391 
392  if (idonly)
393  return -ENODEV;
394 
395 #ifndef MODULE
396  if (fb_get_options("intelfb", &option))
397  return -ENODEV;
398  intelfb_setup(option);
399 #endif
400 
401  return pci_register_driver(&intelfb_driver);
402 }
403 
404 static void __exit intelfb_exit(void)
405 {
406  DBG_MSG("intelfb_exit\n");
407  pci_unregister_driver(&intelfb_driver);
408 }
409 
410 module_init(intelfb_init);
411 module_exit(intelfb_exit);
412 
413 /***************************************************************
414  * mtrr support functions *
415  ***************************************************************/
416 
417 #ifdef CONFIG_MTRR
418 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
419 {
420  dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
421  dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
422  if (dinfo->mtrr_reg < 0) {
423  ERR_MSG("unable to set MTRR\n");
424  return;
425  }
426  dinfo->has_mtrr = 1;
427 }
428 static inline void unset_mtrr(struct intelfb_info *dinfo)
429 {
430  if (dinfo->has_mtrr)
431  mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
432  dinfo->aperture.size);
433 }
434 #else
435 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
436 
437 #define unset_mtrr(x) do { } while (0)
438 #endif /* CONFIG_MTRR */
439 
440 /***************************************************************
441  * driver init / cleanup *
442  ***************************************************************/
443 
444 static void cleanup(struct intelfb_info *dinfo)
445 {
446  DBG_MSG("cleanup\n");
447 
448  if (!dinfo)
449  return;
450 
451  intelfbhw_disable_irq(dinfo);
452 
453  fb_dealloc_cmap(&dinfo->info->cmap);
454  kfree(dinfo->info->pixmap.addr);
455 
456  if (dinfo->registered)
457  unregister_framebuffer(dinfo->info);
458 
459  unset_mtrr(dinfo);
460 
461  if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
462  agp_unbind_memory(dinfo->gtt_fb_mem);
463  agp_free_memory(dinfo->gtt_fb_mem);
464  }
465  if (dinfo->gtt_cursor_mem) {
466  agp_unbind_memory(dinfo->gtt_cursor_mem);
467  agp_free_memory(dinfo->gtt_cursor_mem);
468  }
469  if (dinfo->gtt_ring_mem) {
470  agp_unbind_memory(dinfo->gtt_ring_mem);
471  agp_free_memory(dinfo->gtt_ring_mem);
472  }
473 
474 #ifdef CONFIG_FB_INTEL_I2C
475  /* un-register I2C bus */
476  intelfb_delete_i2c_busses(dinfo);
477 #endif
478 
479  if (dinfo->mmio_base)
480  iounmap((void __iomem *)dinfo->mmio_base);
481  if (dinfo->aperture.virtual)
482  iounmap((void __iomem *)dinfo->aperture.virtual);
483 
484  if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
485  release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
486  if (dinfo->flag & INTELFB_FB_ACQUIRED)
487  release_mem_region(dinfo->aperture.physical,
488  dinfo->aperture.size);
489  framebuffer_release(dinfo->info);
490 }
491 
492 #define bailout(dinfo) do { \
493  DBG_MSG("bailout\n"); \
494  cleanup(dinfo); \
495  INF_MSG("Not going to register framebuffer, exiting...\n"); \
496  return -ENODEV; \
497 } while (0)
498 
499 
500 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
501  const struct pci_device_id *ent)
502 {
503  struct fb_info *info;
504  struct intelfb_info *dinfo;
505  int i, err, dvo;
506  int aperture_size, stolen_size;
507  struct agp_kern_info gtt_info;
508  int agp_memtype;
509  const char *s;
510  struct agp_bridge_data *bridge;
511  int aperture_bar = 0;
512  int mmio_bar = 1;
513  int offset;
514 
515  DBG_MSG("intelfb_pci_register\n");
516 
517  num_registered++;
518  if (num_registered != 1) {
519  ERR_MSG("Attempted to register %d devices "
520  "(should be only 1).\n", num_registered);
521  return -ENODEV;
522  }
523 
524  info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
525  if (!info) {
526  ERR_MSG("Could not allocate memory for intelfb_info.\n");
527  return -ENODEV;
528  }
529  if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
530  ERR_MSG("Could not allocate cmap for intelfb_info.\n");
531  goto err_out_cmap;
532  }
533 
534  dinfo = info->par;
535  dinfo->info = info;
536  dinfo->fbops = &intel_fb_ops;
537  dinfo->pdev = pdev;
538 
539  /* Reserve pixmap space. */
540  info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
541  if (info->pixmap.addr == NULL) {
542  ERR_MSG("Cannot reserve pixmap memory.\n");
543  goto err_out_pixmap;
544  }
545 
546  /* set early this option because it could be changed by tv encoder
547  driver */
548  dinfo->fixed_mode = fixed;
549 
550  /* Enable device. */
551  if ((err = pci_enable_device(pdev))) {
552  ERR_MSG("Cannot enable device.\n");
553  cleanup(dinfo);
554  return -ENODEV;
555  }
556 
557  /* Set base addresses. */
558  if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
559  (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
560  (ent->device == PCI_DEVICE_ID_INTEL_945G) ||
561  (ent->device == PCI_DEVICE_ID_INTEL_945GM) ||
562  (ent->device == PCI_DEVICE_ID_INTEL_945GME) ||
563  (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
564  (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
565 
566  aperture_bar = 2;
567  mmio_bar = 0;
568  }
569  dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
570  dinfo->aperture.size = pci_resource_len(pdev, aperture_bar);
571  dinfo->mmio_base_phys = pci_resource_start(pdev, mmio_bar);
572  DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
573  (unsigned long long)pci_resource_start(pdev, aperture_bar),
574  (unsigned long long)pci_resource_len(pdev, aperture_bar),
575  (unsigned long long)pci_resource_start(pdev, mmio_bar),
576  (unsigned long long)pci_resource_len(pdev, mmio_bar));
577 
578  /* Reserve the fb and MMIO regions */
579  if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
580  INTELFB_MODULE_NAME)) {
581  ERR_MSG("Cannot reserve FB region.\n");
582  cleanup(dinfo);
583  return -ENODEV;
584  }
585 
586  dinfo->flag |= INTELFB_FB_ACQUIRED;
587 
588  if (!request_mem_region(dinfo->mmio_base_phys,
589  INTEL_REG_SIZE,
590  INTELFB_MODULE_NAME)) {
591  ERR_MSG("Cannot reserve MMIO region.\n");
592  cleanup(dinfo);
593  return -ENODEV;
594  }
595 
596  dinfo->flag |= INTELFB_MMIO_ACQUIRED;
597 
598  /* Get the chipset info. */
599  dinfo->pci_chipset = pdev->device;
600 
601  if (intelfbhw_get_chipset(pdev, dinfo)) {
602  cleanup(dinfo);
603  return -ENODEV;
604  }
605 
606  if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
607  cleanup(dinfo);
608  return -ENODEV;
609  }
610 
611  INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
612  "stolen memory %dkB\n",
613  pdev->bus->number, PCI_SLOT(pdev->devfn),
614  PCI_FUNC(pdev->devfn), dinfo->name,
615  BtoMB(aperture_size), BtoKB(stolen_size));
616 
617  /* Set these from the options. */
618  dinfo->accel = accel;
619  dinfo->hwcursor = hwcursor;
620 
621  if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
622  INF_MSG("Acceleration is not supported for the %s chipset.\n",
623  dinfo->name);
624  dinfo->accel = 0;
625  }
626 
627  /* Framebuffer parameters - Use all the stolen memory if >= vram */
628  if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
629  dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
630  dinfo->fbmem_gart = 0;
631  } else {
632  dinfo->fb.size = MB(vram);
633  dinfo->fbmem_gart = 1;
634  }
635 
636  /* Allocate space for the ring buffer and HW cursor if enabled. */
637  if (dinfo->accel) {
638  dinfo->ring.size = RINGBUFFER_SIZE;
639  dinfo->ring_tail_mask = dinfo->ring.size - 1;
640  }
641  if (dinfo->hwcursor)
642  dinfo->cursor.size = HW_CURSOR_SIZE;
643 
644  /* Use agpgart to manage the GATT */
645  if (!(bridge = agp_backend_acquire(pdev))) {
646  ERR_MSG("cannot acquire agp\n");
647  cleanup(dinfo);
648  return -ENODEV;
649  }
650 
651  /* get the current gatt info */
652  if (agp_copy_info(bridge, &gtt_info)) {
653  ERR_MSG("cannot get agp info\n");
654  agp_backend_release(bridge);
655  cleanup(dinfo);
656  return -ENODEV;
657  }
658 
659  if (MB(voffset) < stolen_size)
660  offset = (stolen_size >> 12);
661  else
662  offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
663 
664  /* set the mem offsets - set them after the already used pages */
665  if (dinfo->accel)
666  dinfo->ring.offset = offset + gtt_info.current_memory;
667  if (dinfo->hwcursor)
668  dinfo->cursor.offset = offset +
669  + gtt_info.current_memory + (dinfo->ring.size >> 12);
670  if (dinfo->fbmem_gart)
671  dinfo->fb.offset = offset +
672  + gtt_info.current_memory + (dinfo->ring.size >> 12)
673  + (dinfo->cursor.size >> 12);
674 
675  /* Allocate memories (which aren't stolen) */
676  /* Map the fb and MMIO regions */
677  /* ioremap only up to the end of used aperture */
678  dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
679  (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
680  + dinfo->fb.size);
681  if (!dinfo->aperture.virtual) {
682  ERR_MSG("Cannot remap FB region.\n");
683  agp_backend_release(bridge);
684  cleanup(dinfo);
685  return -ENODEV;
686  }
687 
688  dinfo->mmio_base =
689  (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
690  INTEL_REG_SIZE);
691  if (!dinfo->mmio_base) {
692  ERR_MSG("Cannot remap MMIO region.\n");
693  agp_backend_release(bridge);
694  cleanup(dinfo);
695  return -ENODEV;
696  }
697 
698  if (dinfo->accel) {
699  if (!(dinfo->gtt_ring_mem =
700  agp_allocate_memory(bridge, dinfo->ring.size >> 12,
701  AGP_NORMAL_MEMORY))) {
702  ERR_MSG("cannot allocate ring buffer memory\n");
703  agp_backend_release(bridge);
704  cleanup(dinfo);
705  return -ENOMEM;
706  }
707  if (agp_bind_memory(dinfo->gtt_ring_mem,
708  dinfo->ring.offset)) {
709  ERR_MSG("cannot bind ring buffer memory\n");
710  agp_backend_release(bridge);
711  cleanup(dinfo);
712  return -EBUSY;
713  }
714  dinfo->ring.physical = dinfo->aperture.physical
715  + (dinfo->ring.offset << 12);
716  dinfo->ring.virtual = dinfo->aperture.virtual
717  + (dinfo->ring.offset << 12);
718  dinfo->ring_head = 0;
719  }
720  if (dinfo->hwcursor) {
721  agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
722  : AGP_NORMAL_MEMORY;
723  if (!(dinfo->gtt_cursor_mem =
724  agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
725  agp_memtype))) {
726  ERR_MSG("cannot allocate cursor memory\n");
727  agp_backend_release(bridge);
728  cleanup(dinfo);
729  return -ENOMEM;
730  }
731  if (agp_bind_memory(dinfo->gtt_cursor_mem,
732  dinfo->cursor.offset)) {
733  ERR_MSG("cannot bind cursor memory\n");
734  agp_backend_release(bridge);
735  cleanup(dinfo);
736  return -EBUSY;
737  }
738  if (dinfo->mobile)
739  dinfo->cursor.physical
740  = dinfo->gtt_cursor_mem->physical;
741  else
742  dinfo->cursor.physical = dinfo->aperture.physical
743  + (dinfo->cursor.offset << 12);
744  dinfo->cursor.virtual = dinfo->aperture.virtual
745  + (dinfo->cursor.offset << 12);
746  }
747  if (dinfo->fbmem_gart) {
748  if (!(dinfo->gtt_fb_mem =
749  agp_allocate_memory(bridge, dinfo->fb.size >> 12,
750  AGP_NORMAL_MEMORY))) {
751  WRN_MSG("cannot allocate framebuffer memory - use "
752  "the stolen one\n");
753  dinfo->fbmem_gart = 0;
754  }
755  if (agp_bind_memory(dinfo->gtt_fb_mem,
756  dinfo->fb.offset)) {
757  WRN_MSG("cannot bind framebuffer memory - use "
758  "the stolen one\n");
759  dinfo->fbmem_gart = 0;
760  }
761  }
762 
763  /* update framebuffer memory parameters */
764  if (!dinfo->fbmem_gart)
765  dinfo->fb.offset = 0; /* starts at offset 0 */
766  dinfo->fb.physical = dinfo->aperture.physical
767  + (dinfo->fb.offset << 12);
768  dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
769  dinfo->fb_start = dinfo->fb.offset << 12;
770 
771  /* release agpgart */
772  agp_backend_release(bridge);
773 
774  if (mtrr)
775  set_mtrr(dinfo);
776 
777  DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
778  dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
779  dinfo->fb.virtual);
780  DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
781  dinfo->mmio_base_phys, INTEL_REG_SIZE,
782  dinfo->mmio_base);
783  DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
784  dinfo->ring.physical, dinfo->ring.size,
785  dinfo->ring.virtual);
786  DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
787  dinfo->cursor.physical, dinfo->cursor.size,
788  dinfo->cursor.virtual, dinfo->cursor.offset,
789  dinfo->cursor.physical);
790 
791  DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
792  "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
793  DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
794 
795  if (probeonly)
796  bailout(dinfo);
797 
798  /*
799  * Check if the LVDS port or any DVO ports are enabled. If so,
800  * don't allow mode switching
801  */
802  dvo = intelfbhw_check_non_crt(dinfo);
803  if (dvo) {
804  dinfo->fixed_mode = 1;
805  WRN_MSG("Non-CRT device is enabled ( ");
806  i = 0;
807  while (dvo) {
808  if (dvo & 1) {
809  s = intelfbhw_dvo_to_string(1 << i);
810  if (s)
811  printk("%s ", s);
812  }
813  dvo >>= 1;
814  ++i;
815  }
816  printk("). Disabling mode switching.\n");
817  }
818 
819  if (bailearly == 1)
820  bailout(dinfo);
821 
822  if (FIXED_MODE(dinfo) &&
823  screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
824  ERR_MSG("Video mode must be programmed at boot time.\n");
825  cleanup(dinfo);
826  return -ENODEV;
827  }
828 
829  if (bailearly == 2)
830  bailout(dinfo);
831 
832  /* Initialise dinfo and related data. */
833  /* If an initial mode was programmed at boot time, get its details. */
834  if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
835  get_initial_mode(dinfo);
836 
837  if (bailearly == 3)
838  bailout(dinfo);
839 
840  if (FIXED_MODE(dinfo)) /* remap fb address */
841  update_dinfo(dinfo, &dinfo->initial_var);
842 
843  if (bailearly == 4)
844  bailout(dinfo);
845 
846 
847  if (intelfb_set_fbinfo(dinfo)) {
848  cleanup(dinfo);
849  return -ENODEV;
850  }
851 
852  if (bailearly == 5)
853  bailout(dinfo);
854 
855 #ifdef CONFIG_FB_INTEL_I2C
856  /* register I2C bus */
857  intelfb_create_i2c_busses(dinfo);
858 #endif
859 
860  if (bailearly == 6)
861  bailout(dinfo);
862 
863  pci_set_drvdata(pdev, dinfo);
864 
865  /* Save the initial register state. */
866  i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
867  bailearly > 6 ? bailearly - 6 : 0);
868  if (i != 0) {
869  DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
870  bailout(dinfo);
871  }
872 
873  intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
874 
875  if (bailearly == 18)
876  bailout(dinfo);
877 
878  /* read active pipe */
879  dinfo->pipe = intelfbhw_active_pipe(&dinfo->save_state);
880 
881  /* Cursor initialisation */
882  if (dinfo->hwcursor) {
883  intelfbhw_cursor_init(dinfo);
884  intelfbhw_cursor_reset(dinfo);
885  }
886 
887  if (bailearly == 19)
888  bailout(dinfo);
889 
890  /* 2d acceleration init */
891  if (dinfo->accel)
892  intelfbhw_2d_start(dinfo);
893 
894  if (bailearly == 20)
895  bailout(dinfo);
896 
897  if (noregister)
898  bailout(dinfo);
899 
900  if (register_framebuffer(dinfo->info) < 0) {
901  ERR_MSG("Cannot register framebuffer.\n");
902  cleanup(dinfo);
903  return -ENODEV;
904  }
905 
906  dinfo->registered = 1;
907  dinfo->open = 0;
908 
909  init_waitqueue_head(&dinfo->vsync.wait);
910  spin_lock_init(&dinfo->int_lock);
911  dinfo->irq_flags = 0;
912  dinfo->vsync.pan_display = 0;
913  dinfo->vsync.pan_offset = 0;
914 
915  return 0;
916 
917 err_out_pixmap:
918  fb_dealloc_cmap(&info->cmap);
919 err_out_cmap:
920  framebuffer_release(info);
921  return -ENODEV;
922 }
923 
924 static void __devexit
925 intelfb_pci_unregister(struct pci_dev *pdev)
926 {
927  struct intelfb_info *dinfo = pci_get_drvdata(pdev);
928 
929  DBG_MSG("intelfb_pci_unregister\n");
930 
931  if (!dinfo)
932  return;
933 
934  cleanup(dinfo);
935 
936  pci_set_drvdata(pdev, NULL);
937 }
938 
939 /***************************************************************
940  * helper functions *
941  ***************************************************************/
942 
943 int __inline__ intelfb_var_to_depth(const struct fb_var_screeninfo *var)
944 {
945  DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
946  var->bits_per_pixel, var->green.length);
947 
948  switch (var->bits_per_pixel) {
949  case 16:
950  return (var->green.length == 6) ? 16 : 15;
951  case 32:
952  return 24;
953  default:
954  return var->bits_per_pixel;
955  }
956 }
957 
958 
959 static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
960 {
961  int xtot = var->xres + var->left_margin + var->right_margin +
962  var->hsync_len;
963  int ytot = var->yres + var->upper_margin + var->lower_margin +
964  var->vsync_len;
965 
966  return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
967 }
968 
969 /***************************************************************
970  * Various intialisation functions *
971  ***************************************************************/
972 
973 static void __devinit get_initial_mode(struct intelfb_info *dinfo)
974 {
975  struct fb_var_screeninfo *var;
976  int xtot, ytot;
977 
978  DBG_MSG("get_initial_mode\n");
979 
980  dinfo->initial_vga = 1;
981  dinfo->initial_fb_base = screen_info.lfb_base;
982  dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
983  dinfo->initial_pitch = screen_info.lfb_linelength;
984 
985  var = &dinfo->initial_var;
986  memset(var, 0, sizeof(*var));
987  var->xres = screen_info.lfb_width;
988  var->yres = screen_info.lfb_height;
989  var->bits_per_pixel = screen_info.lfb_depth;
990  switch (screen_info.lfb_depth) {
991  case 15:
992  var->bits_per_pixel = 16;
993  break;
994  case 24:
995  var->bits_per_pixel = 32;
996  break;
997  }
998 
999  DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
1000  dinfo->initial_fb_base, dinfo->initial_video_ram,
1001  BtoKB(dinfo->initial_video_ram));
1002 
1003  DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
1004  var->xres, var->yres, var->bits_per_pixel,
1005  dinfo->initial_pitch);
1006 
1007  /* Dummy timing values (assume 60Hz) */
1008  var->left_margin = (var->xres / 8) & 0xf8;
1009  var->right_margin = 32;
1010  var->upper_margin = 16;
1011  var->lower_margin = 4;
1012  var->hsync_len = (var->xres / 8) & 0xf8;
1013  var->vsync_len = 4;
1014 
1015  xtot = var->xres + var->left_margin +
1016  var->right_margin + var->hsync_len;
1017  ytot = var->yres + var->upper_margin +
1018  var->lower_margin + var->vsync_len;
1019  var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1020 
1021  var->height = -1;
1022  var->width = -1;
1023 
1024  if (var->bits_per_pixel > 8) {
1025  var->red.offset = screen_info.red_pos;
1026  var->red.length = screen_info.red_size;
1027  var->green.offset = screen_info.green_pos;
1028  var->green.length = screen_info.green_size;
1029  var->blue.offset = screen_info.blue_pos;
1030  var->blue.length = screen_info.blue_size;
1031  var->transp.offset = screen_info.rsvd_pos;
1032  var->transp.length = screen_info.rsvd_size;
1033  } else {
1034  var->red.length = 8;
1035  var->green.length = 8;
1036  var->blue.length = 8;
1037  }
1038 }
1039 
1040 static int __devinit intelfb_init_var(struct intelfb_info *dinfo)
1041 {
1042  struct fb_var_screeninfo *var;
1043  int msrc = 0;
1044 
1045  DBG_MSG("intelfb_init_var\n");
1046 
1047  var = &dinfo->info->var;
1048  if (FIXED_MODE(dinfo)) {
1049  memcpy(var, &dinfo->initial_var,
1050  sizeof(struct fb_var_screeninfo));
1051  msrc = 5;
1052  } else {
1053  const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1054  u8 *edid_d = NULL;
1055 
1056  if (edid_s) {
1057  edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1058 
1059  if (edid_d) {
1060  fb_edid_to_monspecs(edid_d,
1061  &dinfo->info->monspecs);
1062  kfree(edid_d);
1063  }
1064  }
1065 
1066  if (mode) {
1067  printk("intelfb: Looking for mode in private "
1068  "database\n");
1069  msrc = fb_find_mode(var, dinfo->info, mode,
1070  dinfo->info->monspecs.modedb,
1071  dinfo->info->monspecs.modedb_len,
1072  NULL, 0);
1073 
1074  if (msrc && msrc > 1) {
1075  printk("intelfb: No mode in private database, "
1076  "intelfb: looking for mode in global "
1077  "database ");
1078  msrc = fb_find_mode(var, dinfo->info, mode,
1079  NULL, 0, NULL, 0);
1080 
1081  if (msrc)
1082  msrc |= 8;
1083  }
1084 
1085  }
1086 
1087  if (!msrc)
1088  msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1089  NULL, 0, NULL, 0);
1090  }
1091 
1092  if (!msrc) {
1093  ERR_MSG("Cannot find a suitable video mode.\n");
1094  return 1;
1095  }
1096 
1097  INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1098  var->bits_per_pixel, var_to_refresh(var));
1099 
1100  DBG_MSG("Initial video mode is from %d.\n", msrc);
1101 
1102 #if ALLOCATE_FOR_PANNING
1103  /* Allow use of half of the video ram for panning */
1104  var->xres_virtual = var->xres;
1105  var->yres_virtual =
1106  dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1107  if (var->yres_virtual < var->yres)
1108  var->yres_virtual = var->yres;
1109 #else
1110  var->yres_virtual = var->yres;
1111 #endif
1112 
1113  if (dinfo->accel)
1114  var->accel_flags |= FB_ACCELF_TEXT;
1115  else
1116  var->accel_flags &= ~FB_ACCELF_TEXT;
1117 
1118  return 0;
1119 }
1120 
1121 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo)
1122 {
1123  struct fb_info *info = dinfo->info;
1124 
1125  DBG_MSG("intelfb_set_fbinfo\n");
1126 
1127  info->flags = FBINFO_FLAG_DEFAULT;
1128  info->fbops = &intel_fb_ops;
1129  info->pseudo_palette = dinfo->pseudo_palette;
1130 
1131  info->pixmap.size = 64*1024;
1132  info->pixmap.buf_align = 8;
1133  info->pixmap.access_align = 32;
1134  info->pixmap.flags = FB_PIXMAP_SYSTEM;
1135 
1136  if (intelfb_init_var(dinfo))
1137  return 1;
1138 
1139  info->pixmap.scan_align = 1;
1140  strcpy(info->fix.id, dinfo->name);
1141  info->fix.smem_start = dinfo->fb.physical;
1142  info->fix.smem_len = dinfo->fb.size;
1143  info->fix.type = FB_TYPE_PACKED_PIXELS;
1144  info->fix.type_aux = 0;
1145  info->fix.xpanstep = 8;
1146  info->fix.ypanstep = 1;
1147  info->fix.ywrapstep = 0;
1148  info->fix.mmio_start = dinfo->mmio_base_phys;
1149  info->fix.mmio_len = INTEL_REG_SIZE;
1150  info->fix.accel = FB_ACCEL_I830;
1151  update_dinfo(dinfo, &info->var);
1152 
1153  return 0;
1154 }
1155 
1156 /* Update dinfo to match the active video mode. */
1157 static void update_dinfo(struct intelfb_info *dinfo,
1158  struct fb_var_screeninfo *var)
1159 {
1160  DBG_MSG("update_dinfo\n");
1161 
1162  dinfo->bpp = var->bits_per_pixel;
1163  dinfo->depth = intelfb_var_to_depth(var);
1164  dinfo->xres = var->xres;
1165  dinfo->yres = var->xres;
1166  dinfo->pixclock = var->pixclock;
1167 
1168  dinfo->info->fix.visual = dinfo->visual;
1169  dinfo->info->fix.line_length = dinfo->pitch;
1170 
1171  switch (dinfo->bpp) {
1172  case 8:
1173  dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1174  dinfo->pitch = var->xres_virtual;
1175  break;
1176  case 16:
1177  dinfo->visual = FB_VISUAL_TRUECOLOR;
1178  dinfo->pitch = var->xres_virtual * 2;
1179  break;
1180  case 32:
1181  dinfo->visual = FB_VISUAL_TRUECOLOR;
1182  dinfo->pitch = var->xres_virtual * 4;
1183  break;
1184  }
1185 
1186  /* Make sure the line length is a aligned correctly. */
1187  if (IS_I9XX(dinfo))
1188  dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1189  else
1190  dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1191 
1192  if (FIXED_MODE(dinfo))
1193  dinfo->pitch = dinfo->initial_pitch;
1194 
1195  dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1196  dinfo->info->fix.line_length = dinfo->pitch;
1197  dinfo->info->fix.visual = dinfo->visual;
1198 }
1199 
1200 /* fbops functions */
1201 
1202 /***************************************************************
1203  * fbdev interface *
1204  ***************************************************************/
1205 
1206 static int intelfb_open(struct fb_info *info, int user)
1207 {
1208  struct intelfb_info *dinfo = GET_DINFO(info);
1209 
1210  if (user)
1211  dinfo->open++;
1212 
1213  return 0;
1214 }
1215 
1216 static int intelfb_release(struct fb_info *info, int user)
1217 {
1218  struct intelfb_info *dinfo = GET_DINFO(info);
1219 
1220  if (user) {
1221  dinfo->open--;
1222  msleep(1);
1223  if (!dinfo->open)
1224  intelfbhw_disable_irq(dinfo);
1225  }
1226 
1227  return 0;
1228 }
1229 
1230 static int intelfb_check_var(struct fb_var_screeninfo *var,
1231  struct fb_info *info)
1232 {
1233  int change_var = 0;
1234  struct fb_var_screeninfo v;
1235  struct intelfb_info *dinfo;
1236  static int first = 1;
1237  int i;
1238  /* Good pitches to allow tiling. Don't care about pitches < 1024. */
1239  static const int pitches[] = {
1240  128 * 8,
1241  128 * 16,
1242  128 * 32,
1243  128 * 64,
1244  0
1245  };
1246 
1247  DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1248 
1249  dinfo = GET_DINFO(info);
1250 
1251  /* update the pitch */
1252  if (intelfbhw_validate_mode(dinfo, var) != 0)
1253  return -EINVAL;
1254 
1255  v = *var;
1256 
1257  for (i = 0; pitches[i] != 0; i++) {
1258  if (pitches[i] >= v.xres_virtual) {
1259  v.xres_virtual = pitches[i];
1260  break;
1261  }
1262  }
1263 
1264  /* Check for a supported bpp. */
1265  if (v.bits_per_pixel <= 8)
1266  v.bits_per_pixel = 8;
1267  else if (v.bits_per_pixel <= 16) {
1268  if (v.bits_per_pixel == 16)
1269  v.green.length = 6;
1270  v.bits_per_pixel = 16;
1271  } else if (v.bits_per_pixel <= 32)
1272  v.bits_per_pixel = 32;
1273  else
1274  return -EINVAL;
1275 
1276  change_var = ((info->var.xres != var->xres) ||
1277  (info->var.yres != var->yres) ||
1278  (info->var.xres_virtual != var->xres_virtual) ||
1279  (info->var.yres_virtual != var->yres_virtual) ||
1280  (info->var.bits_per_pixel != var->bits_per_pixel) ||
1281  memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1282  memcmp(&info->var.green, &var->green,
1283  sizeof(var->green)) ||
1284  memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1285 
1286  if (FIXED_MODE(dinfo) &&
1287  (change_var ||
1288  var->yres_virtual > dinfo->initial_var.yres_virtual ||
1289  var->yres_virtual < dinfo->initial_var.yres ||
1290  var->xoffset || var->nonstd)) {
1291  if (first) {
1292  ERR_MSG("Changing the video mode is not supported.\n");
1293  first = 0;
1294  }
1295  return -EINVAL;
1296  }
1297 
1298  switch (intelfb_var_to_depth(&v)) {
1299  case 8:
1300  v.red.offset = v.green.offset = v.blue.offset = 0;
1301  v.red.length = v.green.length = v.blue.length = 8;
1302  v.transp.offset = v.transp.length = 0;
1303  break;
1304  case 15:
1305  v.red.offset = 10;
1306  v.green.offset = 5;
1307  v.blue.offset = 0;
1308  v.red.length = v.green.length = v.blue.length = 5;
1309  v.transp.offset = v.transp.length = 0;
1310  break;
1311  case 16:
1312  v.red.offset = 11;
1313  v.green.offset = 5;
1314  v.blue.offset = 0;
1315  v.red.length = 5;
1316  v.green.length = 6;
1317  v.blue.length = 5;
1318  v.transp.offset = v.transp.length = 0;
1319  break;
1320  case 24:
1321  v.red.offset = 16;
1322  v.green.offset = 8;
1323  v.blue.offset = 0;
1324  v.red.length = v.green.length = v.blue.length = 8;
1325  v.transp.offset = v.transp.length = 0;
1326  break;
1327  case 32:
1328  v.red.offset = 16;
1329  v.green.offset = 8;
1330  v.blue.offset = 0;
1331  v.red.length = v.green.length = v.blue.length = 8;
1332  v.transp.offset = 24;
1333  v.transp.length = 8;
1334  break;
1335  }
1336 
1337  if (v.xoffset < 0)
1338  v.xoffset = 0;
1339  if (v.yoffset < 0)
1340  v.yoffset = 0;
1341 
1342  if (v.xoffset > v.xres_virtual - v.xres)
1343  v.xoffset = v.xres_virtual - v.xres;
1344  if (v.yoffset > v.yres_virtual - v.yres)
1345  v.yoffset = v.yres_virtual - v.yres;
1346 
1347  v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1348  v.transp.msb_right = 0;
1349 
1350  *var = v;
1351 
1352  return 0;
1353 }
1354 
1355 static int intelfb_set_par(struct fb_info *info)
1356 {
1357  struct intelfb_hwstate *hw;
1358  struct intelfb_info *dinfo = GET_DINFO(info);
1359 
1360  if (FIXED_MODE(dinfo)) {
1361  ERR_MSG("Changing the video mode is not supported.\n");
1362  return -EINVAL;
1363  }
1364 
1365  hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1366  if (!hw)
1367  return -ENOMEM;
1368 
1369  DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1370  info->var.yres, info->var.bits_per_pixel);
1371 
1372  /*
1373  * Disable VCO prior to timing register change.
1374  */
1375  OUTREG(DPLL_A, INREG(DPLL_A) & ~DPLL_VCO_ENABLE);
1376 
1377  intelfb_blank(FB_BLANK_POWERDOWN, info);
1378 
1379  if (ACCEL(dinfo, info))
1380  intelfbhw_2d_stop(dinfo);
1381 
1382  memcpy(hw, &dinfo->save_state, sizeof(*hw));
1383  if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1384  goto invalid_mode;
1385  if (intelfbhw_program_mode(dinfo, hw, 0))
1386  goto invalid_mode;
1387 
1388 #if REGDUMP > 0
1389  intelfbhw_read_hw_state(dinfo, hw, 0);
1390  intelfbhw_print_hw_state(dinfo, hw);
1391 #endif
1392 
1393  update_dinfo(dinfo, &info->var);
1394 
1395  if (ACCEL(dinfo, info))
1396  intelfbhw_2d_start(dinfo);
1397 
1398  intelfb_pan_display(&info->var, info);
1399 
1400  intelfb_blank(FB_BLANK_UNBLANK, info);
1401 
1402  if (ACCEL(dinfo, info)) {
1403  info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1404  FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1405  FBINFO_HWACCEL_IMAGEBLIT;
1406  } else
1407  info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1408 
1409  kfree(hw);
1410  return 0;
1411 invalid_mode:
1412  kfree(hw);
1413  return -EINVAL;
1414 }
1415 
1416 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1417  unsigned blue, unsigned transp,
1418  struct fb_info *info)
1419 {
1420  struct intelfb_info *dinfo = GET_DINFO(info);
1421 
1422 #if VERBOSE > 0
1423  DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1424 #endif
1425 
1426  if (regno > 255)
1427  return 1;
1428 
1429  if (dinfo->depth == 8) {
1430  red >>= 8;
1431  green >>= 8;
1432  blue >>= 8;
1433 
1434  intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1435  transp);
1436  }
1437 
1438  if (regno < 16) {
1439  switch (dinfo->depth) {
1440  case 15:
1441  dinfo->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
1442  ((green & 0xf800) >> 6) |
1443  ((blue & 0xf800) >> 11);
1444  break;
1445  case 16:
1446  dinfo->pseudo_palette[regno] = (red & 0xf800) |
1447  ((green & 0xfc00) >> 5) |
1448  ((blue & 0xf800) >> 11);
1449  break;
1450  case 24:
1451  dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1452  (green & 0xff00) |
1453  ((blue & 0xff00) >> 8);
1454  break;
1455  }
1456  }
1457 
1458  return 0;
1459 }
1460 
1461 static int intelfb_blank(int blank, struct fb_info *info)
1462 {
1463  intelfbhw_do_blank(blank, info);
1464  return 0;
1465 }
1466 
1467 static int intelfb_pan_display(struct fb_var_screeninfo *var,
1468  struct fb_info *info)
1469 {
1470  intelfbhw_pan_display(var, info);
1471  return 0;
1472 }
1473 
1474 /* When/if we have our own ioctls. */
1475 static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1476  unsigned long arg)
1477 {
1478  int retval = 0;
1479  struct intelfb_info *dinfo = GET_DINFO(info);
1480  u32 pipe = 0;
1481 
1482  switch (cmd) {
1483  case FBIO_WAITFORVSYNC:
1484  if (get_user(pipe, (__u32 __user *)arg))
1485  return -EFAULT;
1486 
1487  retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1488  break;
1489  default:
1490  break;
1491  }
1492 
1493  return retval;
1494 }
1495 
1496 static void intelfb_fillrect (struct fb_info *info,
1497  const struct fb_fillrect *rect)
1498 {
1499  struct intelfb_info *dinfo = GET_DINFO(info);
1500  u32 rop, color;
1501 
1502 #if VERBOSE > 0
1503  DBG_MSG("intelfb_fillrect\n");
1504 #endif
1505 
1506  if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1507  cfb_fillrect(info, rect);
1508  return;
1509  }
1510 
1511  if (rect->rop == ROP_COPY)
1512  rop = PAT_ROP_GXCOPY;
1513  else /* ROP_XOR */
1514  rop = PAT_ROP_GXXOR;
1515 
1516  if (dinfo->depth != 8)
1517  color = dinfo->pseudo_palette[rect->color];
1518  else
1519  color = rect->color;
1520 
1521  intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1522  rect->width, rect->height, color,
1523  dinfo->pitch, info->var.bits_per_pixel,
1524  rop);
1525 }
1526 
1527 static void intelfb_copyarea(struct fb_info *info,
1528  const struct fb_copyarea *region)
1529 {
1530  struct intelfb_info *dinfo = GET_DINFO(info);
1531 
1532 #if VERBOSE > 0
1533  DBG_MSG("intelfb_copyarea\n");
1534 #endif
1535 
1536  if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1537  cfb_copyarea(info, region);
1538  return;
1539  }
1540 
1541  intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1542  region->dy, region->width, region->height,
1543  dinfo->pitch, info->var.bits_per_pixel);
1544 }
1545 
1546 static void intelfb_imageblit(struct fb_info *info,
1547  const struct fb_image *image)
1548 {
1549  struct intelfb_info *dinfo = GET_DINFO(info);
1550  u32 fgcolor, bgcolor;
1551 
1552 #if VERBOSE > 0
1553  DBG_MSG("intelfb_imageblit\n");
1554 #endif
1555 
1556  if (!ACCEL(dinfo, info) || dinfo->depth == 4
1557  || image->depth != 1) {
1558  cfb_imageblit(info, image);
1559  return;
1560  }
1561 
1562  if (dinfo->depth != 8) {
1563  fgcolor = dinfo->pseudo_palette[image->fg_color];
1564  bgcolor = dinfo->pseudo_palette[image->bg_color];
1565  } else {
1566  fgcolor = image->fg_color;
1567  bgcolor = image->bg_color;
1568  }
1569 
1570  if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1571  image->height, image->data,
1572  image->dx, image->dy,
1573  dinfo->pitch, info->var.bits_per_pixel)) {
1574  cfb_imageblit(info, image);
1575  return;
1576  }
1577 }
1578 
1579 static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1580 {
1581  struct intelfb_info *dinfo = GET_DINFO(info);
1582  u32 physical;
1583 #if VERBOSE > 0
1584  DBG_MSG("intelfb_cursor\n");
1585 #endif
1586 
1587  if (!dinfo->hwcursor)
1588  return -ENODEV;
1589 
1590  intelfbhw_cursor_hide(dinfo);
1591 
1592  /* If XFree killed the cursor - restore it */
1593  physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1594  (dinfo->cursor.offset << 12);
1595 
1596  if (INREG(CURSOR_A_BASEADDR) != physical) {
1597  u32 fg, bg;
1598 
1599  DBG_MSG("the cursor was killed - restore it !!\n");
1600  DBG_MSG("size %d, %d pos %d, %d\n",
1601  cursor->image.width, cursor->image.height,
1602  cursor->image.dx, cursor->image.dy);
1603 
1604  intelfbhw_cursor_init(dinfo);
1605  intelfbhw_cursor_reset(dinfo);
1606  intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1607  cursor->image.dy);
1608 
1609  if (dinfo->depth != 8) {
1610  fg =dinfo->pseudo_palette[cursor->image.fg_color];
1611  bg =dinfo->pseudo_palette[cursor->image.bg_color];
1612  } else {
1613  fg = cursor->image.fg_color;
1614  bg = cursor->image.bg_color;
1615  }
1616  intelfbhw_cursor_setcolor(dinfo, bg, fg);
1617  intelfbhw_cursor_load(dinfo, cursor->image.width,
1618  cursor->image.height,
1619  dinfo->cursor_src);
1620 
1621  if (cursor->enable)
1622  intelfbhw_cursor_show(dinfo);
1623  return 0;
1624  }
1625 
1626  if (cursor->set & FB_CUR_SETPOS) {
1627  u32 dx, dy;
1628 
1629  dx = cursor->image.dx - info->var.xoffset;
1630  dy = cursor->image.dy - info->var.yoffset;
1631 
1632  intelfbhw_cursor_setpos(dinfo, dx, dy);
1633  }
1634 
1635  if (cursor->set & FB_CUR_SETSIZE) {
1636  if (cursor->image.width > 64 || cursor->image.height > 64)
1637  return -ENXIO;
1638 
1639  intelfbhw_cursor_reset(dinfo);
1640  }
1641 
1642  if (cursor->set & FB_CUR_SETCMAP) {
1643  u32 fg, bg;
1644 
1645  if (dinfo->depth != 8) {
1646  fg = dinfo->pseudo_palette[cursor->image.fg_color];
1647  bg = dinfo->pseudo_palette[cursor->image.bg_color];
1648  } else {
1649  fg = cursor->image.fg_color;
1650  bg = cursor->image.bg_color;
1651  }
1652 
1653  intelfbhw_cursor_setcolor(dinfo, bg, fg);
1654  }
1655 
1656  if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1657  u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1658  u32 size = s_pitch * cursor->image.height;
1659  u8 *dat = (u8 *) cursor->image.data;
1660  u8 *msk = (u8 *) cursor->mask;
1661  u8 src[64];
1662  u32 i;
1663 
1664  if (cursor->image.depth != 1)
1665  return -ENXIO;
1666 
1667  switch (cursor->rop) {
1668  case ROP_XOR:
1669  for (i = 0; i < size; i++)
1670  src[i] = dat[i] ^ msk[i];
1671  break;
1672  case ROP_COPY:
1673  default:
1674  for (i = 0; i < size; i++)
1675  src[i] = dat[i] & msk[i];
1676  break;
1677  }
1678 
1679  /* save the bitmap to restore it when XFree will
1680  make the cursor dirty */
1681  memcpy(dinfo->cursor_src, src, size);
1682 
1683  intelfbhw_cursor_load(dinfo, cursor->image.width,
1684  cursor->image.height, src);
1685  }
1686 
1687  if (cursor->enable)
1688  intelfbhw_cursor_show(dinfo);
1689 
1690  return 0;
1691 }
1692 
1693 static int intelfb_sync(struct fb_info *info)
1694 {
1695  struct intelfb_info *dinfo = GET_DINFO(info);
1696 
1697 #if VERBOSE > 0
1698  DBG_MSG("intelfb_sync\n");
1699 #endif
1700 
1701  if (dinfo->ring_lockup)
1702  return 0;
1703 
1704  intelfbhw_do_sync(dinfo);
1705  return 0;
1706 }
1707 
Generated on Thu Jan 10 2013 14:40:28 for Linux Kernel by   doxygen 1.8.2