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