1 /*
2 * intelfb
3 *
4 * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM/
5 * 945G/945GM/945GME/965G/965GM integrated graphics chips.
6 *
7 * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org>
8 * 2004 Sylvain Meyer
9 * 2006 David Airlie
10 *
11 * This driver consists of two parts. The first part (intelfbdrv.c) provides
12 * the basic fbdev interfaces, is derived in part from the radeonfb and
13 * vesafb drivers, and is covered by the GPL. The second part (intelfbhw.c)
14 * provides the code to program the hardware. Most of it is derived from
15 * the i810/i830 XFree86 driver. The HW-specific code is covered here
16 * under a dual license (GPL and MIT/XFree86 license).
17 *
18 * Author: David Dawes
19 *
20 */
21
22 /* $DHD: intelfb/intelfbdrv.c,v 1.20 2003/06/27 15:17:40 dawes Exp $ */
23
24 /*
25 * Changes:
26 * 01/2003 - Initial driver (0.1.0), no mode switching, no acceleration.
27 * This initial version is a basic core that works a lot like
28 * the vesafb driver. It must be built-in to the kernel,
29 * and the initial video mode must be set with vga=XXX at
30 * boot time. (David Dawes)
31 *
32 * 01/2003 - Version 0.2.0: Mode switching added, colormap support
33 * implemented, Y panning, and soft screen blanking implemented.
34 * No acceleration yet. (David Dawes)
35 *
36 * 01/2003 - Version 0.3.0: fbcon acceleration support added. Module
37 * option handling added. (David Dawes)
38 *
39 * 01/2003 - Version 0.4.0: fbcon HW cursor support added. (David Dawes)
40 *
41 * 01/2003 - Version 0.4.1: Add auto-generation of built-in modes.
42 * (David Dawes)
43 *
44 * 02/2003 - Version 0.4.2: Add check for active non-CRT devices, and
45 * mode validation checks. (David Dawes)
46 *
47 * 02/2003 - Version 0.4.3: Check when the VC is in graphics mode so that
48 * acceleration is disabled while an XFree86 server is running.
49 * (David Dawes)
50 *
51 * 02/2003 - Version 0.4.4: Monitor DPMS support. (David Dawes)
52 *
53 * 02/2003 - Version 0.4.5: Basic XFree86 + fbdev working. (David Dawes)
54 *
55 * 02/2003 - Version 0.5.0: Modify to work with the 2.5.32 kernel as well
56 * as 2.4.x kernels. (David Dawes)
57 *
58 * 02/2003 - Version 0.6.0: Split out HW-specifics into a separate file.
59 * (David Dawes)
60 *
61 * 02/2003 - Version 0.7.0: Test on 852GM/855GM. Acceleration and HW
62 * cursor are disabled on this platform. (David Dawes)
63 *
64 * 02/2003 - Version 0.7.1: Test on 845G. Acceleration is disabled
65 * on this platform. (David Dawes)
66 *
67 * 02/2003 - Version 0.7.2: Test on 830M. Acceleration and HW
68 * cursor are disabled on this platform. (David Dawes)
69 *
70 * 02/2003 - Version 0.7.3: Fix 8-bit modes for mobile platforms
71 * (David Dawes)
72 *
73 * 02/2003 - Version 0.7.4: Add checks for FB and FBCON_HAS_CFB* configured
74 * in the kernel, and add mode bpp verification and default
75 * bpp selection based on which FBCON_HAS_CFB* are configured.
76 * (David Dawes)
77 *
78 * 02/2003 - Version 0.7.5: Add basic package/install scripts based on the
79 * DRI packaging scripts. (David Dawes)
80 *
81 * 04/2003 - Version 0.7.6: Fix typo that affects builds with SMP-enabled
82 * kernels. (David Dawes, reported by Anupam).
83 *
84 * 06/2003 - Version 0.7.7:
85 * Fix Makefile.kernel build problem (Tsutomu Yasuda).
86 * Fix mis-placed #endif (2.4.21 kernel).
87 *
88 * 09/2004 - Version 0.9.0 - by Sylvain Meyer
89 * Port to linux 2.6 kernel fbdev
90 * Fix HW accel and HW cursor on i845G
91 * Use of agpgart for fb memory reservation
92 * Add mtrr support
93 *
94 * 10/2004 - Version 0.9.1
95 * Use module_param instead of old MODULE_PARM
96 * Some cleanup
97 *
98 * 11/2004 - Version 0.9.2
99 * Add vram option to reserve more memory than stolen by BIOS
100 * Fix intelfbhw_pan_display typo
101 * Add __initdata annotations
102 *
103 * 04/2008 - Version 0.9.5
104 * Add support for 965G/965GM. (Maik Broemme <mbroemme@plusserver.de>)
105 *
106 * 08/2008 - Version 0.9.6
107 * Add support for 945GME. (Phil Endecott <spam_from_intelfb@chezphil.org>)
108 */
109
110 #include <linux/module.h>
111 #include <linux/kernel.h>
112 #include <linux/errno.h>
113 #include <linux/string.h>
114 #include <linux/mm.h>
115 #include <linux/slab.h>
116 #include <linux/delay.h>
117 #include <linux/fb.h>
118 #include <linux/ioport.h>
119 #include <linux/init.h>
120 #include <linux/pci.h>
121 #include <linux/vmalloc.h>
122 #include <linux/pagemap.h>
123 #include <linux/screen_info.h>
124
125 #include <asm/io.h>
126
127 #include "intelfb.h"
128 #include "intelfbhw.h"
129 #include "../edid.h"
130
131 static void get_initial_mode(struct intelfb_info *dinfo);
132 static void update_dinfo(struct intelfb_info *dinfo,
133 struct fb_var_screeninfo *var);
134 static int intelfb_open(struct fb_info *info, int user);
135 static int intelfb_release(struct fb_info *info, int user);
136 static int intelfb_check_var(struct fb_var_screeninfo *var,
137 struct fb_info *info);
138 static int intelfb_set_par(struct fb_info *info);
139 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
140 unsigned blue, unsigned transp,
141 struct fb_info *info);
142
143 static int intelfb_blank(int blank, struct fb_info *info);
144 static int intelfb_pan_display(struct fb_var_screeninfo *var,
145 struct fb_info *info);
146
147 static void intelfb_fillrect(struct fb_info *info,
148 const struct fb_fillrect *rect);
149 static void intelfb_copyarea(struct fb_info *info,
150 const struct fb_copyarea *region);
151 static void intelfb_imageblit(struct fb_info *info,
152 const struct fb_image *image);
153 static int intelfb_cursor(struct fb_info *info,
154 struct fb_cursor *cursor);
155
156 static int intelfb_sync(struct fb_info *info);
157
158 static int intelfb_ioctl(struct fb_info *info,
159 unsigned int cmd, unsigned long arg);
160
161 static int intelfb_pci_register(struct pci_dev *pdev,
162 const struct pci_device_id *ent);
163 static void intelfb_pci_unregister(struct pci_dev *pdev);
164 static int intelfb_set_fbinfo(struct intelfb_info *dinfo);
165
166 /*
167 * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
168 * mobile chipsets from being registered.
169 */
170 #if DETECT_VGA_CLASS_ONLY
171 #define INTELFB_CLASS_MASK ~0 << 8
172 #else
173 #define INTELFB_CLASS_MASK 0
174 #endif
175
176 static const struct pci_device_id intelfb_pci_table[] = {
177 { 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 },
178 { 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 },
179 { 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 },
180 { 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 },
181 { 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 },
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_945GME, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GME },
187 { 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 },
188 { 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 },
189 { 0, }
190 };
191
192 /* Global data */
193 static int num_registered = 0;
194
195 /* fb ops */
196 static const struct fb_ops intel_fb_ops = {
197 .owner = THIS_MODULE,
198 .fb_open = intelfb_open,
199 .fb_release = intelfb_release,
200 .fb_check_var = intelfb_check_var,
201 .fb_set_par = intelfb_set_par,
202 .fb_setcolreg = intelfb_setcolreg,
203 .fb_blank = intelfb_blank,
204 .fb_pan_display = intelfb_pan_display,
205 .fb_fillrect = intelfb_fillrect,
206 .fb_copyarea = intelfb_copyarea,
207 .fb_imageblit = intelfb_imageblit,
208 .fb_cursor = intelfb_cursor,
209 .fb_sync = intelfb_sync,
210 .fb_ioctl = intelfb_ioctl
211 };
212
213 /* PCI driver module table */
214 static struct pci_driver intelfb_driver = {
215 .name = "intelfb",
216 .id_table = intelfb_pci_table,
217 .probe = intelfb_pci_register,
218 .remove = intelfb_pci_unregister,
219 };
220
221 /* Module description/parameters */
222 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
223 "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
224 MODULE_DESCRIPTION("Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS
225 " chipsets");
226 MODULE_LICENSE("Dual BSD/GPL");
227 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
228
229 static bool accel = 1;
230 static int vram = 4;
231 static bool hwcursor = 0;
232 static bool mtrr = 1;
233 static bool fixed = 0;
234 static bool noinit = 0;
235 static bool noregister = 0;
236 static bool probeonly = 0;
237 static bool idonly = 0;
238 static int bailearly = 0;
239 static int voffset = 48;
240 static char *mode = NULL;
241
242 module_param(accel, bool, S_IRUGO);
243 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
244 module_param(vram, int, S_IRUGO);
245 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
246 module_param(voffset, int, S_IRUGO);
247 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
248 module_param(hwcursor, bool, S_IRUGO);
249 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
250 module_param(mtrr, bool, S_IRUGO);
251 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
252 module_param(fixed, bool, S_IRUGO);
253 MODULE_PARM_DESC(fixed, "Disable mode switching");
254 module_param(noinit, bool, 0);
255 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
256 module_param(noregister, bool, 0);
257 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
258 module_param(probeonly, bool, 0);
259 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
260 module_param(idonly, bool, 0);
261 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
262 module_param(bailearly, int, 0);
263 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
264 module_param(mode, charp, S_IRUGO);
265 MODULE_PARM_DESC(mode,
266 "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
267
268 #ifndef MODULE
269 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
270 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
271 #define OPT_STRVAL(opt, name) (opt + strlen(name))
272
get_opt_string(const char * this_opt,const char * name)273 static __inline__ char * get_opt_string(const char *this_opt, const char *name)
274 {
275 const char *p;
276 int i;
277 char *ret;
278
279 p = OPT_STRVAL(this_opt, name);
280 i = 0;
281 while (p[i] && p[i] != ' ' && p[i] != ',')
282 i++;
283 ret = kmalloc(i + 1, GFP_KERNEL);
284 if (ret) {
285 strncpy(ret, p, i);
286 ret[i] = '\0';
287 }
288 return ret;
289 }
290
get_opt_int(const char * this_opt,const char * name,int * ret)291 static __inline__ int get_opt_int(const char *this_opt, const char *name,
292 int *ret)
293 {
294 if (!ret)
295 return 0;
296
297 if (!OPT_EQUAL(this_opt, name))
298 return 0;
299
300 *ret = OPT_INTVAL(this_opt, name);
301 return 1;
302 }
303
get_opt_bool(const char * this_opt,const char * name,bool * ret)304 static __inline__ int get_opt_bool(const char *this_opt, const char *name,
305 bool *ret)
306 {
307 if (!ret)
308 return 0;
309
310 if (OPT_EQUAL(this_opt, name)) {
311 if (this_opt[strlen(name)] == '=')
312 *ret = simple_strtoul(this_opt + strlen(name) + 1,
313 NULL, 0);
314 else
315 *ret = 1;
316 } else {
317 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
318 *ret = 0;
319 else
320 return 0;
321 }
322 return 1;
323 }
324
intelfb_setup(char * options)325 static int __init intelfb_setup(char *options)
326 {
327 char *this_opt;
328
329 DBG_MSG("intelfb_setup\n");
330
331 if (!options || !*options) {
332 DBG_MSG("no options\n");
333 return 0;
334 } else
335 DBG_MSG("options: %s\n", options);
336
337 /*
338 * These are the built-in options analogous to the module parameters
339 * defined above.
340 *
341 * The syntax is:
342 *
343 * video=intelfb:[mode][,<param>=<val>] ...
344 *
345 * e.g.,
346 *
347 * video=intelfb:1024x768-16@75,accel=0
348 */
349
350 while ((this_opt = strsep(&options, ","))) {
351 if (!*this_opt)
352 continue;
353 if (get_opt_bool(this_opt, "accel", &accel))
354 ;
355 else if (get_opt_int(this_opt, "vram", &vram))
356 ;
357 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
358 ;
359 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
360 ;
361 else if (get_opt_bool(this_opt, "fixed", &fixed))
362 ;
363 else if (get_opt_bool(this_opt, "init", &noinit))
364 noinit = !noinit;
365 else if (OPT_EQUAL(this_opt, "mode="))
366 mode = get_opt_string(this_opt, "mode=");
367 else
368 mode = this_opt;
369 }
370
371 return 0;
372 }
373
374 #endif
375
intelfb_init(void)376 static int __init intelfb_init(void)
377 {
378 #ifndef MODULE
379 char *option = NULL;
380 #endif
381
382 DBG_MSG("intelfb_init\n");
383
384 INF_MSG("Framebuffer driver for "
385 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
386 INF_MSG("Version " INTELFB_VERSION "\n");
387
388 if (idonly)
389 return -ENODEV;
390
391 #ifndef MODULE
392 if (fb_get_options("intelfb", &option))
393 return -ENODEV;
394 intelfb_setup(option);
395 #endif
396
397 return pci_register_driver(&intelfb_driver);
398 }
399
intelfb_exit(void)400 static void __exit intelfb_exit(void)
401 {
402 DBG_MSG("intelfb_exit\n");
403 pci_unregister_driver(&intelfb_driver);
404 }
405
406 module_init(intelfb_init);
407 module_exit(intelfb_exit);
408
409 /***************************************************************
410 * driver init / cleanup *
411 ***************************************************************/
412
cleanup(struct intelfb_info * dinfo)413 static void cleanup(struct intelfb_info *dinfo)
414 {
415 DBG_MSG("cleanup\n");
416
417 if (!dinfo)
418 return;
419
420 intelfbhw_disable_irq(dinfo);
421
422 fb_dealloc_cmap(&dinfo->info->cmap);
423 kfree(dinfo->info->pixmap.addr);
424
425 if (dinfo->registered)
426 unregister_framebuffer(dinfo->info);
427
428 arch_phys_wc_del(dinfo->wc_cookie);
429
430 if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
431 agp_unbind_memory(dinfo->gtt_fb_mem);
432 agp_free_memory(dinfo->gtt_fb_mem);
433 }
434 if (dinfo->gtt_cursor_mem) {
435 agp_unbind_memory(dinfo->gtt_cursor_mem);
436 agp_free_memory(dinfo->gtt_cursor_mem);
437 }
438 if (dinfo->gtt_ring_mem) {
439 agp_unbind_memory(dinfo->gtt_ring_mem);
440 agp_free_memory(dinfo->gtt_ring_mem);
441 }
442
443 #ifdef CONFIG_FB_INTEL_I2C
444 /* un-register I2C bus */
445 intelfb_delete_i2c_busses(dinfo);
446 #endif
447
448 if (dinfo->mmio_base)
449 iounmap((void __iomem *)dinfo->mmio_base);
450 if (dinfo->aperture.virtual)
451 iounmap((void __iomem *)dinfo->aperture.virtual);
452
453 if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
454 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
455 if (dinfo->flag & INTELFB_FB_ACQUIRED)
456 release_mem_region(dinfo->aperture.physical,
457 dinfo->aperture.size);
458 framebuffer_release(dinfo->info);
459 }
460
461 #define bailout(dinfo) do { \
462 DBG_MSG("bailout\n"); \
463 cleanup(dinfo); \
464 INF_MSG("Not going to register framebuffer, exiting...\n"); \
465 return -ENODEV; \
466 } while (0)
467
468
intelfb_pci_register(struct pci_dev * pdev,const struct pci_device_id * ent)469 static int intelfb_pci_register(struct pci_dev *pdev,
470 const struct pci_device_id *ent)
471 {
472 struct fb_info *info;
473 struct intelfb_info *dinfo;
474 int i, err, dvo;
475 int aperture_size, stolen_size;
476 struct agp_kern_info gtt_info;
477 int agp_memtype;
478 const char *s;
479 struct agp_bridge_data *bridge;
480 int aperture_bar = 0;
481 int mmio_bar = 1;
482 int offset;
483
484 DBG_MSG("intelfb_pci_register\n");
485
486 num_registered++;
487 if (num_registered != 1) {
488 ERR_MSG("Attempted to register %d devices "
489 "(should be only 1).\n", num_registered);
490 return -ENODEV;
491 }
492
493 info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
494 if (!info)
495 return -ENOMEM;
496
497 if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
498 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
499 goto err_out_cmap;
500 }
501
502 dinfo = info->par;
503 dinfo->info = info;
504 dinfo->fbops = &intel_fb_ops;
505 dinfo->pdev = pdev;
506
507 /* Reserve pixmap space. */
508 info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
509 if (info->pixmap.addr == NULL) {
510 ERR_MSG("Cannot reserve pixmap memory.\n");
511 goto err_out_pixmap;
512 }
513
514 /* set early this option because it could be changed by tv encoder
515 driver */
516 dinfo->fixed_mode = fixed;
517
518 /* Enable device. */
519 if ((err = pci_enable_device(pdev))) {
520 ERR_MSG("Cannot enable device.\n");
521 cleanup(dinfo);
522 return -ENODEV;
523 }
524
525 /* Set base addresses. */
526 if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
527 (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
528 (ent->device == PCI_DEVICE_ID_INTEL_945G) ||
529 (ent->device == PCI_DEVICE_ID_INTEL_945GM) ||
530 (ent->device == PCI_DEVICE_ID_INTEL_945GME) ||
531 (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
532 (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
533
534 aperture_bar = 2;
535 mmio_bar = 0;
536 }
537 dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
538 dinfo->aperture.size = pci_resource_len(pdev, aperture_bar);
539 dinfo->mmio_base_phys = pci_resource_start(pdev, mmio_bar);
540 DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
541 (unsigned long long)pci_resource_start(pdev, aperture_bar),
542 (unsigned long long)pci_resource_len(pdev, aperture_bar),
543 (unsigned long long)pci_resource_start(pdev, mmio_bar),
544 (unsigned long long)pci_resource_len(pdev, mmio_bar));
545
546 /* Reserve the fb and MMIO regions */
547 if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
548 INTELFB_MODULE_NAME)) {
549 ERR_MSG("Cannot reserve FB region.\n");
550 cleanup(dinfo);
551 return -ENODEV;
552 }
553
554 dinfo->flag |= INTELFB_FB_ACQUIRED;
555
556 if (!request_mem_region(dinfo->mmio_base_phys,
557 INTEL_REG_SIZE,
558 INTELFB_MODULE_NAME)) {
559 ERR_MSG("Cannot reserve MMIO region.\n");
560 cleanup(dinfo);
561 return -ENODEV;
562 }
563
564 dinfo->flag |= INTELFB_MMIO_ACQUIRED;
565
566 /* Get the chipset info. */
567 dinfo->pci_chipset = pdev->device;
568
569 if (intelfbhw_get_chipset(pdev, dinfo)) {
570 cleanup(dinfo);
571 return -ENODEV;
572 }
573
574 if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
575 cleanup(dinfo);
576 return -ENODEV;
577 }
578
579 INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
580 "stolen memory %dkB\n",
581 pdev->bus->number, PCI_SLOT(pdev->devfn),
582 PCI_FUNC(pdev->devfn), dinfo->name,
583 BtoMB(aperture_size), BtoKB(stolen_size));
584
585 /* Set these from the options. */
586 dinfo->accel = accel;
587 dinfo->hwcursor = hwcursor;
588
589 if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
590 INF_MSG("Acceleration is not supported for the %s chipset.\n",
591 dinfo->name);
592 dinfo->accel = 0;
593 }
594
595 /* Framebuffer parameters - Use all the stolen memory if >= vram */
596 if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
597 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
598 dinfo->fbmem_gart = 0;
599 } else {
600 dinfo->fb.size = MB(vram);
601 dinfo->fbmem_gart = 1;
602 }
603
604 /* Allocate space for the ring buffer and HW cursor if enabled. */
605 if (dinfo->accel) {
606 dinfo->ring.size = RINGBUFFER_SIZE;
607 dinfo->ring_tail_mask = dinfo->ring.size - 1;
608 }
609 if (dinfo->hwcursor)
610 dinfo->cursor.size = HW_CURSOR_SIZE;
611
612 /* Use agpgart to manage the GATT */
613 if (!(bridge = agp_backend_acquire(pdev))) {
614 ERR_MSG("cannot acquire agp\n");
615 cleanup(dinfo);
616 return -ENODEV;
617 }
618
619 /* get the current gatt info */
620 if (agp_copy_info(bridge, >t_info)) {
621 ERR_MSG("cannot get agp info\n");
622 agp_backend_release(bridge);
623 cleanup(dinfo);
624 return -ENODEV;
625 }
626
627 if (MB(voffset) < stolen_size)
628 offset = (stolen_size >> 12);
629 else
630 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
631
632 /* set the mem offsets - set them after the already used pages */
633 if (dinfo->accel)
634 dinfo->ring.offset = offset + gtt_info.current_memory;
635 if (dinfo->hwcursor)
636 dinfo->cursor.offset = offset +
637 + gtt_info.current_memory + (dinfo->ring.size >> 12);
638 if (dinfo->fbmem_gart)
639 dinfo->fb.offset = offset +
640 + gtt_info.current_memory + (dinfo->ring.size >> 12)
641 + (dinfo->cursor.size >> 12);
642
643 /* Allocate memories (which aren't stolen) */
644 /* Map the fb and MMIO regions */
645 /* ioremap only up to the end of used aperture */
646 dinfo->aperture.virtual = (u8 __iomem *)ioremap_wc
647 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
648 + dinfo->fb.size);
649 if (!dinfo->aperture.virtual) {
650 ERR_MSG("Cannot remap FB region.\n");
651 agp_backend_release(bridge);
652 cleanup(dinfo);
653 return -ENODEV;
654 }
655
656 dinfo->mmio_base =
657 (u8 __iomem *)ioremap(dinfo->mmio_base_phys,
658 INTEL_REG_SIZE);
659 if (!dinfo->mmio_base) {
660 ERR_MSG("Cannot remap MMIO region.\n");
661 agp_backend_release(bridge);
662 cleanup(dinfo);
663 return -ENODEV;
664 }
665
666 if (dinfo->accel) {
667 if (!(dinfo->gtt_ring_mem =
668 agp_allocate_memory(bridge, dinfo->ring.size >> 12,
669 AGP_NORMAL_MEMORY))) {
670 ERR_MSG("cannot allocate ring buffer memory\n");
671 agp_backend_release(bridge);
672 cleanup(dinfo);
673 return -ENOMEM;
674 }
675 if (agp_bind_memory(dinfo->gtt_ring_mem,
676 dinfo->ring.offset)) {
677 ERR_MSG("cannot bind ring buffer memory\n");
678 agp_backend_release(bridge);
679 cleanup(dinfo);
680 return -EBUSY;
681 }
682 dinfo->ring.physical = dinfo->aperture.physical
683 + (dinfo->ring.offset << 12);
684 dinfo->ring.virtual = dinfo->aperture.virtual
685 + (dinfo->ring.offset << 12);
686 dinfo->ring_head = 0;
687 }
688 if (dinfo->hwcursor) {
689 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
690 : AGP_NORMAL_MEMORY;
691 if (!(dinfo->gtt_cursor_mem =
692 agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
693 agp_memtype))) {
694 ERR_MSG("cannot allocate cursor memory\n");
695 agp_backend_release(bridge);
696 cleanup(dinfo);
697 return -ENOMEM;
698 }
699 if (agp_bind_memory(dinfo->gtt_cursor_mem,
700 dinfo->cursor.offset)) {
701 ERR_MSG("cannot bind cursor memory\n");
702 agp_backend_release(bridge);
703 cleanup(dinfo);
704 return -EBUSY;
705 }
706 if (dinfo->mobile)
707 dinfo->cursor.physical
708 = dinfo->gtt_cursor_mem->physical;
709 else
710 dinfo->cursor.physical = dinfo->aperture.physical
711 + (dinfo->cursor.offset << 12);
712 dinfo->cursor.virtual = dinfo->aperture.virtual
713 + (dinfo->cursor.offset << 12);
714 }
715 if (dinfo->fbmem_gart) {
716 if (!(dinfo->gtt_fb_mem =
717 agp_allocate_memory(bridge, dinfo->fb.size >> 12,
718 AGP_NORMAL_MEMORY))) {
719 WRN_MSG("cannot allocate framebuffer memory - use "
720 "the stolen one\n");
721 dinfo->fbmem_gart = 0;
722 }
723 if (agp_bind_memory(dinfo->gtt_fb_mem,
724 dinfo->fb.offset)) {
725 WRN_MSG("cannot bind framebuffer memory - use "
726 "the stolen one\n");
727 dinfo->fbmem_gart = 0;
728 }
729 }
730
731 /* update framebuffer memory parameters */
732 if (!dinfo->fbmem_gart)
733 dinfo->fb.offset = 0; /* starts at offset 0 */
734 dinfo->fb.physical = dinfo->aperture.physical
735 + (dinfo->fb.offset << 12);
736 dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
737 dinfo->fb_start = dinfo->fb.offset << 12;
738
739 /* release agpgart */
740 agp_backend_release(bridge);
741
742 if (mtrr)
743 dinfo->wc_cookie = arch_phys_wc_add(dinfo->aperture.physical,
744 dinfo->aperture.size);
745
746 DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
747 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
748 dinfo->fb.virtual);
749 DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
750 dinfo->mmio_base_phys, INTEL_REG_SIZE,
751 dinfo->mmio_base);
752 DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
753 dinfo->ring.physical, dinfo->ring.size,
754 dinfo->ring.virtual);
755 DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
756 dinfo->cursor.physical, dinfo->cursor.size,
757 dinfo->cursor.virtual, dinfo->cursor.offset,
758 dinfo->cursor.physical);
759
760 DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
761 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
762 DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
763
764 if (probeonly)
765 bailout(dinfo);
766
767 /*
768 * Check if the LVDS port or any DVO ports are enabled. If so,
769 * don't allow mode switching
770 */
771 dvo = intelfbhw_check_non_crt(dinfo);
772 if (dvo) {
773 dinfo->fixed_mode = 1;
774 WRN_MSG("Non-CRT device is enabled ( ");
775 i = 0;
776 while (dvo) {
777 if (dvo & 1) {
778 s = intelfbhw_dvo_to_string(1 << i);
779 if (s)
780 printk("%s ", s);
781 }
782 dvo >>= 1;
783 ++i;
784 }
785 printk("). Disabling mode switching.\n");
786 }
787
788 if (bailearly == 1)
789 bailout(dinfo);
790
791 if (FIXED_MODE(dinfo) &&
792 screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
793 ERR_MSG("Video mode must be programmed at boot time.\n");
794 cleanup(dinfo);
795 return -ENODEV;
796 }
797
798 if (bailearly == 2)
799 bailout(dinfo);
800
801 /* Initialise dinfo and related data. */
802 /* If an initial mode was programmed at boot time, get its details. */
803 if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
804 get_initial_mode(dinfo);
805
806 if (bailearly == 3)
807 bailout(dinfo);
808
809 if (FIXED_MODE(dinfo)) /* remap fb address */
810 update_dinfo(dinfo, &dinfo->initial_var);
811
812 if (bailearly == 4)
813 bailout(dinfo);
814
815
816 if (intelfb_set_fbinfo(dinfo)) {
817 cleanup(dinfo);
818 return -ENODEV;
819 }
820
821 if (bailearly == 5)
822 bailout(dinfo);
823
824 #ifdef CONFIG_FB_INTEL_I2C
825 /* register I2C bus */
826 intelfb_create_i2c_busses(dinfo);
827 #endif
828
829 if (bailearly == 6)
830 bailout(dinfo);
831
832 pci_set_drvdata(pdev, dinfo);
833
834 /* Save the initial register state. */
835 i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
836 bailearly > 6 ? bailearly - 6 : 0);
837 if (i != 0) {
838 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
839 bailout(dinfo);
840 }
841
842 intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
843
844 if (bailearly == 18)
845 bailout(dinfo);
846
847 /* read active pipe */
848 dinfo->pipe = intelfbhw_active_pipe(&dinfo->save_state);
849
850 /* Cursor initialisation */
851 if (dinfo->hwcursor) {
852 intelfbhw_cursor_init(dinfo);
853 intelfbhw_cursor_reset(dinfo);
854 }
855
856 if (bailearly == 19)
857 bailout(dinfo);
858
859 /* 2d acceleration init */
860 if (dinfo->accel)
861 intelfbhw_2d_start(dinfo);
862
863 if (bailearly == 20)
864 bailout(dinfo);
865
866 if (noregister)
867 bailout(dinfo);
868
869 if (register_framebuffer(dinfo->info) < 0) {
870 ERR_MSG("Cannot register framebuffer.\n");
871 cleanup(dinfo);
872 return -ENODEV;
873 }
874
875 dinfo->registered = 1;
876 dinfo->open = 0;
877
878 init_waitqueue_head(&dinfo->vsync.wait);
879 spin_lock_init(&dinfo->int_lock);
880 dinfo->irq_flags = 0;
881 dinfo->vsync.pan_display = 0;
882 dinfo->vsync.pan_offset = 0;
883
884 return 0;
885
886 err_out_pixmap:
887 fb_dealloc_cmap(&info->cmap);
888 err_out_cmap:
889 framebuffer_release(info);
890 return -ENODEV;
891 }
892
intelfb_pci_unregister(struct pci_dev * pdev)893 static void intelfb_pci_unregister(struct pci_dev *pdev)
894 {
895 struct intelfb_info *dinfo = pci_get_drvdata(pdev);
896
897 DBG_MSG("intelfb_pci_unregister\n");
898
899 if (!dinfo)
900 return;
901
902 cleanup(dinfo);
903 }
904
905 /***************************************************************
906 * helper functions *
907 ***************************************************************/
908
intelfb_var_to_depth(const struct fb_var_screeninfo * var)909 __inline__ int intelfb_var_to_depth(const struct fb_var_screeninfo *var)
910 {
911 DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
912 var->bits_per_pixel, var->green.length);
913
914 switch (var->bits_per_pixel) {
915 case 16:
916 return (var->green.length == 6) ? 16 : 15;
917 case 32:
918 return 24;
919 default:
920 return var->bits_per_pixel;
921 }
922 }
923
924
var_to_refresh(const struct fb_var_screeninfo * var)925 static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
926 {
927 int xtot = var->xres + var->left_margin + var->right_margin +
928 var->hsync_len;
929 int ytot = var->yres + var->upper_margin + var->lower_margin +
930 var->vsync_len;
931
932 return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
933 }
934
935 /***************************************************************
936 * Various initialisation functions *
937 ***************************************************************/
938
get_initial_mode(struct intelfb_info * dinfo)939 static void get_initial_mode(struct intelfb_info *dinfo)
940 {
941 struct fb_var_screeninfo *var;
942 int xtot, ytot;
943
944 DBG_MSG("get_initial_mode\n");
945
946 dinfo->initial_vga = 1;
947 dinfo->initial_fb_base = screen_info.lfb_base;
948 dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
949 dinfo->initial_pitch = screen_info.lfb_linelength;
950
951 var = &dinfo->initial_var;
952 memset(var, 0, sizeof(*var));
953 var->xres = screen_info.lfb_width;
954 var->yres = screen_info.lfb_height;
955 var->bits_per_pixel = screen_info.lfb_depth;
956 switch (screen_info.lfb_depth) {
957 case 15:
958 var->bits_per_pixel = 16;
959 break;
960 case 24:
961 var->bits_per_pixel = 32;
962 break;
963 }
964
965 DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
966 dinfo->initial_fb_base, dinfo->initial_video_ram,
967 BtoKB(dinfo->initial_video_ram));
968
969 DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
970 var->xres, var->yres, var->bits_per_pixel,
971 dinfo->initial_pitch);
972
973 /* Dummy timing values (assume 60Hz) */
974 var->left_margin = (var->xres / 8) & 0xf8;
975 var->right_margin = 32;
976 var->upper_margin = 16;
977 var->lower_margin = 4;
978 var->hsync_len = (var->xres / 8) & 0xf8;
979 var->vsync_len = 4;
980
981 xtot = var->xres + var->left_margin +
982 var->right_margin + var->hsync_len;
983 ytot = var->yres + var->upper_margin +
984 var->lower_margin + var->vsync_len;
985 var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
986
987 var->height = -1;
988 var->width = -1;
989
990 if (var->bits_per_pixel > 8) {
991 var->red.offset = screen_info.red_pos;
992 var->red.length = screen_info.red_size;
993 var->green.offset = screen_info.green_pos;
994 var->green.length = screen_info.green_size;
995 var->blue.offset = screen_info.blue_pos;
996 var->blue.length = screen_info.blue_size;
997 var->transp.offset = screen_info.rsvd_pos;
998 var->transp.length = screen_info.rsvd_size;
999 } else {
1000 var->red.length = 8;
1001 var->green.length = 8;
1002 var->blue.length = 8;
1003 }
1004 }
1005
intelfb_init_var(struct intelfb_info * dinfo)1006 static int intelfb_init_var(struct intelfb_info *dinfo)
1007 {
1008 struct fb_var_screeninfo *var;
1009 int msrc = 0;
1010
1011 DBG_MSG("intelfb_init_var\n");
1012
1013 var = &dinfo->info->var;
1014 if (FIXED_MODE(dinfo)) {
1015 memcpy(var, &dinfo->initial_var,
1016 sizeof(struct fb_var_screeninfo));
1017 msrc = 5;
1018 } else {
1019 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1020 u8 *edid_d = NULL;
1021
1022 if (edid_s) {
1023 edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1024
1025 if (edid_d) {
1026 fb_edid_to_monspecs(edid_d,
1027 &dinfo->info->monspecs);
1028 kfree(edid_d);
1029 }
1030 }
1031
1032 if (mode) {
1033 printk("intelfb: Looking for mode in private "
1034 "database\n");
1035 msrc = fb_find_mode(var, dinfo->info, mode,
1036 dinfo->info->monspecs.modedb,
1037 dinfo->info->monspecs.modedb_len,
1038 NULL, 0);
1039
1040 if (msrc && msrc > 1) {
1041 printk("intelfb: No mode in private database, "
1042 "intelfb: looking for mode in global "
1043 "database ");
1044 msrc = fb_find_mode(var, dinfo->info, mode,
1045 NULL, 0, NULL, 0);
1046
1047 if (msrc)
1048 msrc |= 8;
1049 }
1050
1051 }
1052
1053 if (!msrc)
1054 msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1055 NULL, 0, NULL, 0);
1056 }
1057
1058 if (!msrc) {
1059 ERR_MSG("Cannot find a suitable video mode.\n");
1060 return 1;
1061 }
1062
1063 INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1064 var->bits_per_pixel, var_to_refresh(var));
1065
1066 DBG_MSG("Initial video mode is from %d.\n", msrc);
1067
1068 #if ALLOCATE_FOR_PANNING
1069 /* Allow use of half of the video ram for panning */
1070 var->xres_virtual = var->xres;
1071 var->yres_virtual =
1072 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1073 if (var->yres_virtual < var->yres)
1074 var->yres_virtual = var->yres;
1075 #else
1076 var->yres_virtual = var->yres;
1077 #endif
1078
1079 if (dinfo->accel)
1080 var->accel_flags |= FB_ACCELF_TEXT;
1081 else
1082 var->accel_flags &= ~FB_ACCELF_TEXT;
1083
1084 return 0;
1085 }
1086
intelfb_set_fbinfo(struct intelfb_info * dinfo)1087 static int intelfb_set_fbinfo(struct intelfb_info *dinfo)
1088 {
1089 struct fb_info *info = dinfo->info;
1090
1091 DBG_MSG("intelfb_set_fbinfo\n");
1092
1093 info->flags = FBINFO_FLAG_DEFAULT;
1094 info->fbops = &intel_fb_ops;
1095 info->pseudo_palette = dinfo->pseudo_palette;
1096
1097 info->pixmap.size = 64*1024;
1098 info->pixmap.buf_align = 8;
1099 info->pixmap.access_align = 32;
1100 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1101
1102 if (intelfb_init_var(dinfo))
1103 return 1;
1104
1105 info->pixmap.scan_align = 1;
1106 strcpy(info->fix.id, dinfo->name);
1107 info->fix.smem_start = dinfo->fb.physical;
1108 info->fix.smem_len = dinfo->fb.size;
1109 info->fix.type = FB_TYPE_PACKED_PIXELS;
1110 info->fix.type_aux = 0;
1111 info->fix.xpanstep = 8;
1112 info->fix.ypanstep = 1;
1113 info->fix.ywrapstep = 0;
1114 info->fix.mmio_start = dinfo->mmio_base_phys;
1115 info->fix.mmio_len = INTEL_REG_SIZE;
1116 info->fix.accel = FB_ACCEL_I830;
1117 update_dinfo(dinfo, &info->var);
1118
1119 return 0;
1120 }
1121
1122 /* Update dinfo to match the active video mode. */
update_dinfo(struct intelfb_info * dinfo,struct fb_var_screeninfo * var)1123 static void update_dinfo(struct intelfb_info *dinfo,
1124 struct fb_var_screeninfo *var)
1125 {
1126 DBG_MSG("update_dinfo\n");
1127
1128 dinfo->bpp = var->bits_per_pixel;
1129 dinfo->depth = intelfb_var_to_depth(var);
1130 dinfo->xres = var->xres;
1131 dinfo->yres = var->xres;
1132 dinfo->pixclock = var->pixclock;
1133
1134 dinfo->info->fix.visual = dinfo->visual;
1135 dinfo->info->fix.line_length = dinfo->pitch;
1136
1137 switch (dinfo->bpp) {
1138 case 8:
1139 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1140 dinfo->pitch = var->xres_virtual;
1141 break;
1142 case 16:
1143 dinfo->visual = FB_VISUAL_TRUECOLOR;
1144 dinfo->pitch = var->xres_virtual * 2;
1145 break;
1146 case 32:
1147 dinfo->visual = FB_VISUAL_TRUECOLOR;
1148 dinfo->pitch = var->xres_virtual * 4;
1149 break;
1150 }
1151
1152 /* Make sure the line length is a aligned correctly. */
1153 if (IS_I9XX(dinfo))
1154 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1155 else
1156 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1157
1158 if (FIXED_MODE(dinfo))
1159 dinfo->pitch = dinfo->initial_pitch;
1160
1161 dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1162 dinfo->info->fix.line_length = dinfo->pitch;
1163 dinfo->info->fix.visual = dinfo->visual;
1164 }
1165
1166 /* fbops functions */
1167
1168 /***************************************************************
1169 * fbdev interface *
1170 ***************************************************************/
1171
intelfb_open(struct fb_info * info,int user)1172 static int intelfb_open(struct fb_info *info, int user)
1173 {
1174 struct intelfb_info *dinfo = GET_DINFO(info);
1175
1176 if (user)
1177 dinfo->open++;
1178
1179 return 0;
1180 }
1181
intelfb_release(struct fb_info * info,int user)1182 static int intelfb_release(struct fb_info *info, int user)
1183 {
1184 struct intelfb_info *dinfo = GET_DINFO(info);
1185
1186 if (user) {
1187 dinfo->open--;
1188 msleep(1);
1189 if (!dinfo->open)
1190 intelfbhw_disable_irq(dinfo);
1191 }
1192
1193 return 0;
1194 }
1195
intelfb_check_var(struct fb_var_screeninfo * var,struct fb_info * info)1196 static int intelfb_check_var(struct fb_var_screeninfo *var,
1197 struct fb_info *info)
1198 {
1199 int change_var = 0;
1200 struct fb_var_screeninfo v;
1201 struct intelfb_info *dinfo;
1202 static int first = 1;
1203 int i;
1204 /* Good pitches to allow tiling. Don't care about pitches < 1024. */
1205 static const int pitches[] = {
1206 128 * 8,
1207 128 * 16,
1208 128 * 32,
1209 128 * 64,
1210 0
1211 };
1212
1213 DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1214
1215 dinfo = GET_DINFO(info);
1216
1217 /* update the pitch */
1218 if (intelfbhw_validate_mode(dinfo, var) != 0)
1219 return -EINVAL;
1220
1221 v = *var;
1222
1223 for (i = 0; pitches[i] != 0; i++) {
1224 if (pitches[i] >= v.xres_virtual) {
1225 v.xres_virtual = pitches[i];
1226 break;
1227 }
1228 }
1229
1230 /* Check for a supported bpp. */
1231 if (v.bits_per_pixel <= 8)
1232 v.bits_per_pixel = 8;
1233 else if (v.bits_per_pixel <= 16) {
1234 if (v.bits_per_pixel == 16)
1235 v.green.length = 6;
1236 v.bits_per_pixel = 16;
1237 } else if (v.bits_per_pixel <= 32)
1238 v.bits_per_pixel = 32;
1239 else
1240 return -EINVAL;
1241
1242 change_var = ((info->var.xres != var->xres) ||
1243 (info->var.yres != var->yres) ||
1244 (info->var.xres_virtual != var->xres_virtual) ||
1245 (info->var.yres_virtual != var->yres_virtual) ||
1246 (info->var.bits_per_pixel != var->bits_per_pixel) ||
1247 memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1248 memcmp(&info->var.green, &var->green,
1249 sizeof(var->green)) ||
1250 memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1251
1252 if (FIXED_MODE(dinfo) &&
1253 (change_var ||
1254 var->yres_virtual > dinfo->initial_var.yres_virtual ||
1255 var->yres_virtual < dinfo->initial_var.yres ||
1256 var->xoffset || var->nonstd)) {
1257 if (first) {
1258 ERR_MSG("Changing the video mode is not supported.\n");
1259 first = 0;
1260 }
1261 return -EINVAL;
1262 }
1263
1264 switch (intelfb_var_to_depth(&v)) {
1265 case 8:
1266 v.red.offset = v.green.offset = v.blue.offset = 0;
1267 v.red.length = v.green.length = v.blue.length = 8;
1268 v.transp.offset = v.transp.length = 0;
1269 break;
1270 case 15:
1271 v.red.offset = 10;
1272 v.green.offset = 5;
1273 v.blue.offset = 0;
1274 v.red.length = v.green.length = v.blue.length = 5;
1275 v.transp.offset = v.transp.length = 0;
1276 break;
1277 case 16:
1278 v.red.offset = 11;
1279 v.green.offset = 5;
1280 v.blue.offset = 0;
1281 v.red.length = 5;
1282 v.green.length = 6;
1283 v.blue.length = 5;
1284 v.transp.offset = v.transp.length = 0;
1285 break;
1286 case 24:
1287 v.red.offset = 16;
1288 v.green.offset = 8;
1289 v.blue.offset = 0;
1290 v.red.length = v.green.length = v.blue.length = 8;
1291 v.transp.offset = v.transp.length = 0;
1292 break;
1293 case 32:
1294 v.red.offset = 16;
1295 v.green.offset = 8;
1296 v.blue.offset = 0;
1297 v.red.length = v.green.length = v.blue.length = 8;
1298 v.transp.offset = 24;
1299 v.transp.length = 8;
1300 break;
1301 }
1302
1303 if (v.xoffset > v.xres_virtual - v.xres)
1304 v.xoffset = v.xres_virtual - v.xres;
1305 if (v.yoffset > v.yres_virtual - v.yres)
1306 v.yoffset = v.yres_virtual - v.yres;
1307
1308 v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1309 v.transp.msb_right = 0;
1310
1311 *var = v;
1312
1313 return 0;
1314 }
1315
intelfb_set_par(struct fb_info * info)1316 static int intelfb_set_par(struct fb_info *info)
1317 {
1318 struct intelfb_hwstate *hw;
1319 struct intelfb_info *dinfo = GET_DINFO(info);
1320
1321 if (FIXED_MODE(dinfo)) {
1322 ERR_MSG("Changing the video mode is not supported.\n");
1323 return -EINVAL;
1324 }
1325
1326 hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1327 if (!hw)
1328 return -ENOMEM;
1329
1330 DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1331 info->var.yres, info->var.bits_per_pixel);
1332
1333 /*
1334 * Disable VCO prior to timing register change.
1335 */
1336 OUTREG(DPLL_A, INREG(DPLL_A) & ~DPLL_VCO_ENABLE);
1337
1338 intelfb_blank(FB_BLANK_POWERDOWN, info);
1339
1340 if (ACCEL(dinfo, info))
1341 intelfbhw_2d_stop(dinfo);
1342
1343 memcpy(hw, &dinfo->save_state, sizeof(*hw));
1344 if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1345 goto invalid_mode;
1346 if (intelfbhw_program_mode(dinfo, hw, 0))
1347 goto invalid_mode;
1348
1349 #if REGDUMP > 0
1350 intelfbhw_read_hw_state(dinfo, hw, 0);
1351 intelfbhw_print_hw_state(dinfo, hw);
1352 #endif
1353
1354 update_dinfo(dinfo, &info->var);
1355
1356 if (ACCEL(dinfo, info))
1357 intelfbhw_2d_start(dinfo);
1358
1359 intelfb_pan_display(&info->var, info);
1360
1361 intelfb_blank(FB_BLANK_UNBLANK, info);
1362
1363 if (ACCEL(dinfo, info)) {
1364 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1365 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1366 FBINFO_HWACCEL_IMAGEBLIT;
1367 } else
1368 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1369
1370 kfree(hw);
1371 return 0;
1372 invalid_mode:
1373 kfree(hw);
1374 return -EINVAL;
1375 }
1376
intelfb_setcolreg(unsigned regno,unsigned red,unsigned green,unsigned blue,unsigned transp,struct fb_info * info)1377 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1378 unsigned blue, unsigned transp,
1379 struct fb_info *info)
1380 {
1381 struct intelfb_info *dinfo = GET_DINFO(info);
1382
1383 #if VERBOSE > 0
1384 DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1385 #endif
1386
1387 if (regno > 255)
1388 return 1;
1389
1390 if (dinfo->depth == 8) {
1391 red >>= 8;
1392 green >>= 8;
1393 blue >>= 8;
1394
1395 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1396 transp);
1397 }
1398
1399 if (regno < 16) {
1400 switch (dinfo->depth) {
1401 case 15:
1402 dinfo->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
1403 ((green & 0xf800) >> 6) |
1404 ((blue & 0xf800) >> 11);
1405 break;
1406 case 16:
1407 dinfo->pseudo_palette[regno] = (red & 0xf800) |
1408 ((green & 0xfc00) >> 5) |
1409 ((blue & 0xf800) >> 11);
1410 break;
1411 case 24:
1412 dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1413 (green & 0xff00) |
1414 ((blue & 0xff00) >> 8);
1415 break;
1416 }
1417 }
1418
1419 return 0;
1420 }
1421
intelfb_blank(int blank,struct fb_info * info)1422 static int intelfb_blank(int blank, struct fb_info *info)
1423 {
1424 intelfbhw_do_blank(blank, info);
1425 return 0;
1426 }
1427
intelfb_pan_display(struct fb_var_screeninfo * var,struct fb_info * info)1428 static int intelfb_pan_display(struct fb_var_screeninfo *var,
1429 struct fb_info *info)
1430 {
1431 intelfbhw_pan_display(var, info);
1432 return 0;
1433 }
1434
1435 /* When/if we have our own ioctls. */
intelfb_ioctl(struct fb_info * info,unsigned int cmd,unsigned long arg)1436 static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1437 unsigned long arg)
1438 {
1439 int retval = 0;
1440 struct intelfb_info *dinfo = GET_DINFO(info);
1441 u32 pipe = 0;
1442
1443 switch (cmd) {
1444 case FBIO_WAITFORVSYNC:
1445 if (get_user(pipe, (__u32 __user *)arg))
1446 return -EFAULT;
1447
1448 retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1449 break;
1450 default:
1451 break;
1452 }
1453
1454 return retval;
1455 }
1456
intelfb_fillrect(struct fb_info * info,const struct fb_fillrect * rect)1457 static void intelfb_fillrect (struct fb_info *info,
1458 const struct fb_fillrect *rect)
1459 {
1460 struct intelfb_info *dinfo = GET_DINFO(info);
1461 u32 rop, color;
1462
1463 #if VERBOSE > 0
1464 DBG_MSG("intelfb_fillrect\n");
1465 #endif
1466
1467 if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1468 cfb_fillrect(info, rect);
1469 return;
1470 }
1471
1472 if (rect->rop == ROP_COPY)
1473 rop = PAT_ROP_GXCOPY;
1474 else /* ROP_XOR */
1475 rop = PAT_ROP_GXXOR;
1476
1477 if (dinfo->depth != 8)
1478 color = dinfo->pseudo_palette[rect->color];
1479 else
1480 color = rect->color;
1481
1482 intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1483 rect->width, rect->height, color,
1484 dinfo->pitch, info->var.bits_per_pixel,
1485 rop);
1486 }
1487
intelfb_copyarea(struct fb_info * info,const struct fb_copyarea * region)1488 static void intelfb_copyarea(struct fb_info *info,
1489 const struct fb_copyarea *region)
1490 {
1491 struct intelfb_info *dinfo = GET_DINFO(info);
1492
1493 #if VERBOSE > 0
1494 DBG_MSG("intelfb_copyarea\n");
1495 #endif
1496
1497 if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1498 cfb_copyarea(info, region);
1499 return;
1500 }
1501
1502 intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1503 region->dy, region->width, region->height,
1504 dinfo->pitch, info->var.bits_per_pixel);
1505 }
1506
intelfb_imageblit(struct fb_info * info,const struct fb_image * image)1507 static void intelfb_imageblit(struct fb_info *info,
1508 const struct fb_image *image)
1509 {
1510 struct intelfb_info *dinfo = GET_DINFO(info);
1511 u32 fgcolor, bgcolor;
1512
1513 #if VERBOSE > 0
1514 DBG_MSG("intelfb_imageblit\n");
1515 #endif
1516
1517 if (!ACCEL(dinfo, info) || dinfo->depth == 4
1518 || image->depth != 1) {
1519 cfb_imageblit(info, image);
1520 return;
1521 }
1522
1523 if (dinfo->depth != 8) {
1524 fgcolor = dinfo->pseudo_palette[image->fg_color];
1525 bgcolor = dinfo->pseudo_palette[image->bg_color];
1526 } else {
1527 fgcolor = image->fg_color;
1528 bgcolor = image->bg_color;
1529 }
1530
1531 if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1532 image->height, image->data,
1533 image->dx, image->dy,
1534 dinfo->pitch, info->var.bits_per_pixel)) {
1535 cfb_imageblit(info, image);
1536 return;
1537 }
1538 }
1539
intelfb_cursor(struct fb_info * info,struct fb_cursor * cursor)1540 static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1541 {
1542 struct intelfb_info *dinfo = GET_DINFO(info);
1543 u32 physical;
1544 #if VERBOSE > 0
1545 DBG_MSG("intelfb_cursor\n");
1546 #endif
1547
1548 if (!dinfo->hwcursor)
1549 return -ENODEV;
1550
1551 intelfbhw_cursor_hide(dinfo);
1552
1553 /* If XFree killed the cursor - restore it */
1554 physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1555 (dinfo->cursor.offset << 12);
1556
1557 if (INREG(CURSOR_A_BASEADDR) != physical) {
1558 u32 fg, bg;
1559
1560 DBG_MSG("the cursor was killed - restore it !!\n");
1561 DBG_MSG("size %d, %d pos %d, %d\n",
1562 cursor->image.width, cursor->image.height,
1563 cursor->image.dx, cursor->image.dy);
1564
1565 intelfbhw_cursor_init(dinfo);
1566 intelfbhw_cursor_reset(dinfo);
1567 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1568 cursor->image.dy);
1569
1570 if (dinfo->depth != 8) {
1571 fg =dinfo->pseudo_palette[cursor->image.fg_color];
1572 bg =dinfo->pseudo_palette[cursor->image.bg_color];
1573 } else {
1574 fg = cursor->image.fg_color;
1575 bg = cursor->image.bg_color;
1576 }
1577 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1578 intelfbhw_cursor_load(dinfo, cursor->image.width,
1579 cursor->image.height,
1580 dinfo->cursor_src);
1581
1582 if (cursor->enable)
1583 intelfbhw_cursor_show(dinfo);
1584 return 0;
1585 }
1586
1587 if (cursor->set & FB_CUR_SETPOS) {
1588 u32 dx, dy;
1589
1590 dx = cursor->image.dx - info->var.xoffset;
1591 dy = cursor->image.dy - info->var.yoffset;
1592
1593 intelfbhw_cursor_setpos(dinfo, dx, dy);
1594 }
1595
1596 if (cursor->set & FB_CUR_SETSIZE) {
1597 if (cursor->image.width > 64 || cursor->image.height > 64)
1598 return -ENXIO;
1599
1600 intelfbhw_cursor_reset(dinfo);
1601 }
1602
1603 if (cursor->set & FB_CUR_SETCMAP) {
1604 u32 fg, bg;
1605
1606 if (dinfo->depth != 8) {
1607 fg = dinfo->pseudo_palette[cursor->image.fg_color];
1608 bg = dinfo->pseudo_palette[cursor->image.bg_color];
1609 } else {
1610 fg = cursor->image.fg_color;
1611 bg = cursor->image.bg_color;
1612 }
1613
1614 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1615 }
1616
1617 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1618 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1619 u32 size = s_pitch * cursor->image.height;
1620 u8 *dat = (u8 *) cursor->image.data;
1621 u8 *msk = (u8 *) cursor->mask;
1622 u8 src[64];
1623 u32 i;
1624
1625 if (cursor->image.depth != 1)
1626 return -ENXIO;
1627
1628 switch (cursor->rop) {
1629 case ROP_XOR:
1630 for (i = 0; i < size; i++)
1631 src[i] = dat[i] ^ msk[i];
1632 break;
1633 case ROP_COPY:
1634 default:
1635 for (i = 0; i < size; i++)
1636 src[i] = dat[i] & msk[i];
1637 break;
1638 }
1639
1640 /* save the bitmap to restore it when XFree will
1641 make the cursor dirty */
1642 memcpy(dinfo->cursor_src, src, size);
1643
1644 intelfbhw_cursor_load(dinfo, cursor->image.width,
1645 cursor->image.height, src);
1646 }
1647
1648 if (cursor->enable)
1649 intelfbhw_cursor_show(dinfo);
1650
1651 return 0;
1652 }
1653
intelfb_sync(struct fb_info * info)1654 static int intelfb_sync(struct fb_info *info)
1655 {
1656 struct intelfb_info *dinfo = GET_DINFO(info);
1657
1658 #if VERBOSE > 0
1659 DBG_MSG("intelfb_sync\n");
1660 #endif
1661
1662 if (dinfo->ring_lockup)
1663 return 0;
1664
1665 intelfbhw_do_sync(dinfo);
1666 return 0;
1667 }
1668
1669