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 #ifndef MODULE
393 if (fb_get_options("intelfb", &option))
394 return -ENODEV;
395 intelfb_setup(option);
396 #endif
397
398 return pci_register_driver(&intelfb_driver);
399 }
400
intelfb_exit(void)401 static void __exit intelfb_exit(void)
402 {
403 DBG_MSG("intelfb_exit\n");
404 pci_unregister_driver(&intelfb_driver);
405 }
406
407 module_init(intelfb_init);
408 module_exit(intelfb_exit);
409
410 /***************************************************************
411 * driver init / cleanup *
412 ***************************************************************/
413
cleanup(struct intelfb_info * dinfo)414 static void cleanup(struct intelfb_info *dinfo)
415 {
416 DBG_MSG("cleanup\n");
417
418 if (!dinfo)
419 return;
420
421 intelfbhw_disable_irq(dinfo);
422
423 fb_dealloc_cmap(&dinfo->info->cmap);
424 kfree(dinfo->info->pixmap.addr);
425
426 if (dinfo->registered)
427 unregister_framebuffer(dinfo->info);
428
429 arch_phys_wc_del(dinfo->wc_cookie);
430
431 if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
432 agp_unbind_memory(dinfo->gtt_fb_mem);
433 agp_free_memory(dinfo->gtt_fb_mem);
434 }
435 if (dinfo->gtt_cursor_mem) {
436 agp_unbind_memory(dinfo->gtt_cursor_mem);
437 agp_free_memory(dinfo->gtt_cursor_mem);
438 }
439 if (dinfo->gtt_ring_mem) {
440 agp_unbind_memory(dinfo->gtt_ring_mem);
441 agp_free_memory(dinfo->gtt_ring_mem);
442 }
443
444 #ifdef CONFIG_FB_INTEL_I2C
445 /* un-register I2C bus */
446 intelfb_delete_i2c_busses(dinfo);
447 #endif
448
449 if (dinfo->mmio_base)
450 iounmap((void __iomem *)dinfo->mmio_base);
451 if (dinfo->aperture.virtual)
452 iounmap((void __iomem *)dinfo->aperture.virtual);
453
454 if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
455 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
456 if (dinfo->flag & INTELFB_FB_ACQUIRED)
457 release_mem_region(dinfo->aperture.physical,
458 dinfo->aperture.size);
459 framebuffer_release(dinfo->info);
460 }
461
462 #define bailout(dinfo) do { \
463 DBG_MSG("bailout\n"); \
464 cleanup(dinfo); \
465 INF_MSG("Not going to register framebuffer, exiting...\n"); \
466 return -ENODEV; \
467 } while (0)
468
469
intelfb_pci_register(struct pci_dev * pdev,const struct pci_device_id * ent)470 static int intelfb_pci_register(struct pci_dev *pdev,
471 const struct pci_device_id *ent)
472 {
473 struct fb_info *info;
474 struct intelfb_info *dinfo;
475 int i, err, dvo;
476 int aperture_size, stolen_size = 0;
477 struct agp_kern_info gtt_info;
478 int agp_memtype;
479 const char *s;
480 struct agp_bridge_data *bridge;
481 int aperture_bar = 0;
482 int mmio_bar = 1;
483 int offset;
484
485 DBG_MSG("intelfb_pci_register\n");
486
487 err = aperture_remove_conflicting_pci_devices(pdev, "intelfb");
488 if (err)
489 return err;
490
491 num_registered++;
492 if (num_registered != 1) {
493 ERR_MSG("Attempted to register %d devices "
494 "(should be only 1).\n", num_registered);
495 return -ENODEV;
496 }
497
498 info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
499 if (!info)
500 return -ENOMEM;
501
502 if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
503 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
504 goto err_out_cmap;
505 }
506
507 dinfo = info->par;
508 dinfo->info = info;
509 dinfo->fbops = &intel_fb_ops;
510 dinfo->pdev = pdev;
511
512 /* Reserve pixmap space. */
513 info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
514 if (info->pixmap.addr == NULL) {
515 ERR_MSG("Cannot reserve pixmap memory.\n");
516 goto err_out_pixmap;
517 }
518
519 /* set early this option because it could be changed by tv encoder
520 driver */
521 dinfo->fixed_mode = fixed;
522
523 /* Enable device. */
524 if ((err = pci_enable_device(pdev))) {
525 ERR_MSG("Cannot enable device.\n");
526 cleanup(dinfo);
527 return -ENODEV;
528 }
529
530 /* Set base addresses. */
531 if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
532 (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
533 (ent->device == PCI_DEVICE_ID_INTEL_945G) ||
534 (ent->device == PCI_DEVICE_ID_INTEL_945GM) ||
535 (ent->device == PCI_DEVICE_ID_INTEL_945GME) ||
536 (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
537 (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
538
539 aperture_bar = 2;
540 mmio_bar = 0;
541 }
542 dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
543 dinfo->aperture.size = pci_resource_len(pdev, aperture_bar);
544 dinfo->mmio_base_phys = pci_resource_start(pdev, mmio_bar);
545 DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
546 (unsigned long long)pci_resource_start(pdev, aperture_bar),
547 (unsigned long long)pci_resource_len(pdev, aperture_bar),
548 (unsigned long long)pci_resource_start(pdev, mmio_bar),
549 (unsigned long long)pci_resource_len(pdev, mmio_bar));
550
551 /* Reserve the fb and MMIO regions */
552 if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
553 INTELFB_MODULE_NAME)) {
554 ERR_MSG("Cannot reserve FB region.\n");
555 cleanup(dinfo);
556 return -ENODEV;
557 }
558
559 dinfo->flag |= INTELFB_FB_ACQUIRED;
560
561 if (!request_mem_region(dinfo->mmio_base_phys,
562 INTEL_REG_SIZE,
563 INTELFB_MODULE_NAME)) {
564 ERR_MSG("Cannot reserve MMIO region.\n");
565 cleanup(dinfo);
566 return -ENODEV;
567 }
568
569 dinfo->flag |= INTELFB_MMIO_ACQUIRED;
570
571 /* Get the chipset info. */
572 dinfo->pci_chipset = pdev->device;
573
574 if (intelfbhw_get_chipset(pdev, dinfo)) {
575 cleanup(dinfo);
576 return -ENODEV;
577 }
578
579 if (intelfbhw_get_memory(pdev, &aperture_size, &stolen_size)) {
580 cleanup(dinfo);
581 return -ENODEV;
582 }
583
584 INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
585 "stolen memory %dkB\n",
586 pdev->bus->number, PCI_SLOT(pdev->devfn),
587 PCI_FUNC(pdev->devfn), dinfo->name,
588 BtoMB(aperture_size), BtoKB(stolen_size));
589
590 /* Set these from the options. */
591 dinfo->accel = accel;
592 dinfo->hwcursor = hwcursor;
593
594 if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
595 INF_MSG("Acceleration is not supported for the %s chipset.\n",
596 dinfo->name);
597 dinfo->accel = 0;
598 }
599
600 /* Framebuffer parameters - Use all the stolen memory if >= vram */
601 if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
602 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
603 dinfo->fbmem_gart = 0;
604 } else {
605 dinfo->fb.size = MB(vram);
606 dinfo->fbmem_gart = 1;
607 }
608
609 /* Allocate space for the ring buffer and HW cursor if enabled. */
610 if (dinfo->accel) {
611 dinfo->ring.size = RINGBUFFER_SIZE;
612 dinfo->ring_tail_mask = dinfo->ring.size - 1;
613 }
614 if (dinfo->hwcursor)
615 dinfo->cursor.size = HW_CURSOR_SIZE;
616
617 /* Use agpgart to manage the GATT */
618 if (!(bridge = agp_backend_acquire(pdev))) {
619 ERR_MSG("cannot acquire agp\n");
620 cleanup(dinfo);
621 return -ENODEV;
622 }
623
624 /* get the current gatt info */
625 if (agp_copy_info(bridge, >t_info)) {
626 ERR_MSG("cannot get agp info\n");
627 agp_backend_release(bridge);
628 cleanup(dinfo);
629 return -ENODEV;
630 }
631
632 if (MB(voffset) < stolen_size)
633 offset = (stolen_size >> 12);
634 else
635 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
636
637 /* set the mem offsets - set them after the already used pages */
638 if (dinfo->accel)
639 dinfo->ring.offset = offset + gtt_info.current_memory;
640 if (dinfo->hwcursor)
641 dinfo->cursor.offset = offset +
642 + gtt_info.current_memory + (dinfo->ring.size >> 12);
643 if (dinfo->fbmem_gart)
644 dinfo->fb.offset = offset +
645 + gtt_info.current_memory + (dinfo->ring.size >> 12)
646 + (dinfo->cursor.size >> 12);
647
648 /* Allocate memories (which aren't stolen) */
649 /* Map the fb and MMIO regions */
650 /* ioremap only up to the end of used aperture */
651 dinfo->aperture.virtual = (u8 __iomem *)ioremap_wc
652 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
653 + dinfo->fb.size);
654 if (!dinfo->aperture.virtual) {
655 ERR_MSG("Cannot remap FB region.\n");
656 agp_backend_release(bridge);
657 cleanup(dinfo);
658 return -ENODEV;
659 }
660
661 dinfo->mmio_base =
662 (u8 __iomem *)ioremap(dinfo->mmio_base_phys,
663 INTEL_REG_SIZE);
664 if (!dinfo->mmio_base) {
665 ERR_MSG("Cannot remap MMIO region.\n");
666 agp_backend_release(bridge);
667 cleanup(dinfo);
668 return -ENODEV;
669 }
670
671 if (dinfo->accel) {
672 if (!(dinfo->gtt_ring_mem =
673 agp_allocate_memory(bridge, dinfo->ring.size >> 12,
674 AGP_NORMAL_MEMORY))) {
675 ERR_MSG("cannot allocate ring buffer memory\n");
676 agp_backend_release(bridge);
677 cleanup(dinfo);
678 return -ENOMEM;
679 }
680 if (agp_bind_memory(dinfo->gtt_ring_mem,
681 dinfo->ring.offset)) {
682 ERR_MSG("cannot bind ring buffer memory\n");
683 agp_backend_release(bridge);
684 cleanup(dinfo);
685 return -EBUSY;
686 }
687 dinfo->ring.physical = dinfo->aperture.physical
688 + (dinfo->ring.offset << 12);
689 dinfo->ring.virtual = dinfo->aperture.virtual
690 + (dinfo->ring.offset << 12);
691 dinfo->ring_head = 0;
692 }
693 if (dinfo->hwcursor) {
694 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
695 : AGP_NORMAL_MEMORY;
696 if (!(dinfo->gtt_cursor_mem =
697 agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
698 agp_memtype))) {
699 ERR_MSG("cannot allocate cursor memory\n");
700 agp_backend_release(bridge);
701 cleanup(dinfo);
702 return -ENOMEM;
703 }
704 if (agp_bind_memory(dinfo->gtt_cursor_mem,
705 dinfo->cursor.offset)) {
706 ERR_MSG("cannot bind cursor memory\n");
707 agp_backend_release(bridge);
708 cleanup(dinfo);
709 return -EBUSY;
710 }
711 if (dinfo->mobile)
712 dinfo->cursor.physical
713 = dinfo->gtt_cursor_mem->physical;
714 else
715 dinfo->cursor.physical = dinfo->aperture.physical
716 + (dinfo->cursor.offset << 12);
717 dinfo->cursor.virtual = dinfo->aperture.virtual
718 + (dinfo->cursor.offset << 12);
719 }
720 if (dinfo->fbmem_gart) {
721 if (!(dinfo->gtt_fb_mem =
722 agp_allocate_memory(bridge, dinfo->fb.size >> 12,
723 AGP_NORMAL_MEMORY))) {
724 WRN_MSG("cannot allocate framebuffer memory - use "
725 "the stolen one\n");
726 dinfo->fbmem_gart = 0;
727 }
728 if (agp_bind_memory(dinfo->gtt_fb_mem,
729 dinfo->fb.offset)) {
730 WRN_MSG("cannot bind framebuffer memory - use "
731 "the stolen one\n");
732 dinfo->fbmem_gart = 0;
733 }
734 }
735
736 /* update framebuffer memory parameters */
737 if (!dinfo->fbmem_gart)
738 dinfo->fb.offset = 0; /* starts at offset 0 */
739 dinfo->fb.physical = dinfo->aperture.physical
740 + (dinfo->fb.offset << 12);
741 dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
742 dinfo->fb_start = dinfo->fb.offset << 12;
743
744 /* release agpgart */
745 agp_backend_release(bridge);
746
747 if (mtrr)
748 dinfo->wc_cookie = arch_phys_wc_add(dinfo->aperture.physical,
749 dinfo->aperture.size);
750
751 DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
752 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
753 dinfo->fb.virtual);
754 DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
755 dinfo->mmio_base_phys, INTEL_REG_SIZE,
756 dinfo->mmio_base);
757 DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
758 dinfo->ring.physical, dinfo->ring.size,
759 dinfo->ring.virtual);
760 DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
761 dinfo->cursor.physical, dinfo->cursor.size,
762 dinfo->cursor.virtual, dinfo->cursor.offset,
763 dinfo->cursor.physical);
764
765 DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
766 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
767 DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
768
769 if (probeonly)
770 bailout(dinfo);
771
772 /*
773 * Check if the LVDS port or any DVO ports are enabled. If so,
774 * don't allow mode switching
775 */
776 dvo = intelfbhw_check_non_crt(dinfo);
777 if (dvo) {
778 dinfo->fixed_mode = 1;
779 WRN_MSG("Non-CRT device is enabled ( ");
780 i = 0;
781 while (dvo) {
782 if (dvo & 1) {
783 s = intelfbhw_dvo_to_string(1 << i);
784 if (s)
785 printk("%s ", s);
786 }
787 dvo >>= 1;
788 ++i;
789 }
790 printk("). Disabling mode switching.\n");
791 }
792
793 if (bailearly == 1)
794 bailout(dinfo);
795
796 if (FIXED_MODE(dinfo) &&
797 screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
798 ERR_MSG("Video mode must be programmed at boot time.\n");
799 cleanup(dinfo);
800 return -ENODEV;
801 }
802
803 if (bailearly == 2)
804 bailout(dinfo);
805
806 /* Initialise dinfo and related data. */
807 /* If an initial mode was programmed at boot time, get its details. */
808 if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
809 get_initial_mode(dinfo);
810
811 if (bailearly == 3)
812 bailout(dinfo);
813
814 if (FIXED_MODE(dinfo)) /* remap fb address */
815 update_dinfo(dinfo, &dinfo->initial_var);
816
817 if (bailearly == 4)
818 bailout(dinfo);
819
820
821 if (intelfb_set_fbinfo(dinfo)) {
822 cleanup(dinfo);
823 return -ENODEV;
824 }
825
826 if (bailearly == 5)
827 bailout(dinfo);
828
829 #ifdef CONFIG_FB_INTEL_I2C
830 /* register I2C bus */
831 intelfb_create_i2c_busses(dinfo);
832 #endif
833
834 if (bailearly == 6)
835 bailout(dinfo);
836
837 pci_set_drvdata(pdev, dinfo);
838
839 /* Save the initial register state. */
840 i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
841 bailearly > 6 ? bailearly - 6 : 0);
842 if (i != 0) {
843 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
844 bailout(dinfo);
845 }
846
847 intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
848
849 if (bailearly == 18)
850 bailout(dinfo);
851
852 /* read active pipe */
853 dinfo->pipe = intelfbhw_active_pipe(&dinfo->save_state);
854
855 /* Cursor initialisation */
856 if (dinfo->hwcursor) {
857 intelfbhw_cursor_init(dinfo);
858 intelfbhw_cursor_reset(dinfo);
859 }
860
861 if (bailearly == 19)
862 bailout(dinfo);
863
864 /* 2d acceleration init */
865 if (dinfo->accel)
866 intelfbhw_2d_start(dinfo);
867
868 if (bailearly == 20)
869 bailout(dinfo);
870
871 if (noregister)
872 bailout(dinfo);
873
874 if (register_framebuffer(dinfo->info) < 0) {
875 ERR_MSG("Cannot register framebuffer.\n");
876 cleanup(dinfo);
877 return -ENODEV;
878 }
879
880 dinfo->registered = 1;
881 dinfo->open = 0;
882
883 init_waitqueue_head(&dinfo->vsync.wait);
884 spin_lock_init(&dinfo->int_lock);
885 dinfo->irq_flags = 0;
886 dinfo->vsync.pan_display = 0;
887 dinfo->vsync.pan_offset = 0;
888
889 return 0;
890
891 err_out_pixmap:
892 fb_dealloc_cmap(&info->cmap);
893 err_out_cmap:
894 framebuffer_release(info);
895 return -ENODEV;
896 }
897
intelfb_pci_unregister(struct pci_dev * pdev)898 static void intelfb_pci_unregister(struct pci_dev *pdev)
899 {
900 struct intelfb_info *dinfo = pci_get_drvdata(pdev);
901
902 DBG_MSG("intelfb_pci_unregister\n");
903
904 if (!dinfo)
905 return;
906
907 cleanup(dinfo);
908 }
909
910 /***************************************************************
911 * helper functions *
912 ***************************************************************/
913
intelfb_var_to_depth(const struct fb_var_screeninfo * var)914 __inline__ int intelfb_var_to_depth(const struct fb_var_screeninfo *var)
915 {
916 DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
917 var->bits_per_pixel, var->green.length);
918
919 switch (var->bits_per_pixel) {
920 case 16:
921 return (var->green.length == 6) ? 16 : 15;
922 case 32:
923 return 24;
924 default:
925 return var->bits_per_pixel;
926 }
927 }
928
929
var_to_refresh(const struct fb_var_screeninfo * var)930 static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
931 {
932 int xtot = var->xres + var->left_margin + var->right_margin +
933 var->hsync_len;
934 int ytot = var->yres + var->upper_margin + var->lower_margin +
935 var->vsync_len;
936
937 return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
938 }
939
940 /***************************************************************
941 * Various initialisation functions *
942 ***************************************************************/
943
get_initial_mode(struct intelfb_info * dinfo)944 static void get_initial_mode(struct intelfb_info *dinfo)
945 {
946 struct fb_var_screeninfo *var;
947 int xtot, ytot;
948
949 DBG_MSG("get_initial_mode\n");
950
951 dinfo->initial_vga = 1;
952 dinfo->initial_fb_base = screen_info.lfb_base;
953 dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
954 dinfo->initial_pitch = screen_info.lfb_linelength;
955
956 var = &dinfo->initial_var;
957 memset(var, 0, sizeof(*var));
958 var->xres = screen_info.lfb_width;
959 var->yres = screen_info.lfb_height;
960 var->bits_per_pixel = screen_info.lfb_depth;
961 switch (screen_info.lfb_depth) {
962 case 15:
963 var->bits_per_pixel = 16;
964 break;
965 case 24:
966 var->bits_per_pixel = 32;
967 break;
968 }
969
970 DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
971 dinfo->initial_fb_base, dinfo->initial_video_ram,
972 BtoKB(dinfo->initial_video_ram));
973
974 DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
975 var->xres, var->yres, var->bits_per_pixel,
976 dinfo->initial_pitch);
977
978 /* Dummy timing values (assume 60Hz) */
979 var->left_margin = (var->xres / 8) & 0xf8;
980 var->right_margin = 32;
981 var->upper_margin = 16;
982 var->lower_margin = 4;
983 var->hsync_len = (var->xres / 8) & 0xf8;
984 var->vsync_len = 4;
985
986 xtot = var->xres + var->left_margin +
987 var->right_margin + var->hsync_len;
988 ytot = var->yres + var->upper_margin +
989 var->lower_margin + var->vsync_len;
990 var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
991
992 var->height = -1;
993 var->width = -1;
994
995 if (var->bits_per_pixel > 8) {
996 var->red.offset = screen_info.red_pos;
997 var->red.length = screen_info.red_size;
998 var->green.offset = screen_info.green_pos;
999 var->green.length = screen_info.green_size;
1000 var->blue.offset = screen_info.blue_pos;
1001 var->blue.length = screen_info.blue_size;
1002 var->transp.offset = screen_info.rsvd_pos;
1003 var->transp.length = screen_info.rsvd_size;
1004 } else {
1005 var->red.length = 8;
1006 var->green.length = 8;
1007 var->blue.length = 8;
1008 }
1009 }
1010
intelfb_init_var(struct intelfb_info * dinfo)1011 static int intelfb_init_var(struct intelfb_info *dinfo)
1012 {
1013 struct fb_var_screeninfo *var;
1014 int msrc = 0;
1015
1016 DBG_MSG("intelfb_init_var\n");
1017
1018 var = &dinfo->info->var;
1019 if (FIXED_MODE(dinfo)) {
1020 memcpy(var, &dinfo->initial_var,
1021 sizeof(struct fb_var_screeninfo));
1022 msrc = 5;
1023 } else {
1024 const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
1025 u8 *edid_d = NULL;
1026
1027 if (edid_s) {
1028 edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
1029
1030 if (edid_d) {
1031 fb_edid_to_monspecs(edid_d,
1032 &dinfo->info->monspecs);
1033 kfree(edid_d);
1034 }
1035 }
1036
1037 if (mode) {
1038 printk("intelfb: Looking for mode in private "
1039 "database\n");
1040 msrc = fb_find_mode(var, dinfo->info, mode,
1041 dinfo->info->monspecs.modedb,
1042 dinfo->info->monspecs.modedb_len,
1043 NULL, 0);
1044
1045 if (msrc && msrc > 1) {
1046 printk("intelfb: No mode in private database, "
1047 "intelfb: looking for mode in global "
1048 "database ");
1049 msrc = fb_find_mode(var, dinfo->info, mode,
1050 NULL, 0, NULL, 0);
1051
1052 if (msrc)
1053 msrc |= 8;
1054 }
1055
1056 }
1057
1058 if (!msrc)
1059 msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1060 NULL, 0, NULL, 0);
1061 }
1062
1063 if (!msrc) {
1064 ERR_MSG("Cannot find a suitable video mode.\n");
1065 return 1;
1066 }
1067
1068 INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1069 var->bits_per_pixel, var_to_refresh(var));
1070
1071 DBG_MSG("Initial video mode is from %d.\n", msrc);
1072
1073 #if ALLOCATE_FOR_PANNING
1074 /* Allow use of half of the video ram for panning */
1075 var->xres_virtual = var->xres;
1076 var->yres_virtual =
1077 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1078 if (var->yres_virtual < var->yres)
1079 var->yres_virtual = var->yres;
1080 #else
1081 var->yres_virtual = var->yres;
1082 #endif
1083
1084 if (dinfo->accel)
1085 var->accel_flags |= FB_ACCELF_TEXT;
1086 else
1087 var->accel_flags &= ~FB_ACCELF_TEXT;
1088
1089 return 0;
1090 }
1091
intelfb_set_fbinfo(struct intelfb_info * dinfo)1092 static int intelfb_set_fbinfo(struct intelfb_info *dinfo)
1093 {
1094 struct fb_info *info = dinfo->info;
1095
1096 DBG_MSG("intelfb_set_fbinfo\n");
1097
1098 info->flags = FBINFO_FLAG_DEFAULT;
1099 info->fbops = &intel_fb_ops;
1100 info->pseudo_palette = dinfo->pseudo_palette;
1101
1102 info->pixmap.size = 64*1024;
1103 info->pixmap.buf_align = 8;
1104 info->pixmap.access_align = 32;
1105 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1106
1107 if (intelfb_init_var(dinfo))
1108 return 1;
1109
1110 info->pixmap.scan_align = 1;
1111 strcpy(info->fix.id, dinfo->name);
1112 info->fix.smem_start = dinfo->fb.physical;
1113 info->fix.smem_len = dinfo->fb.size;
1114 info->fix.type = FB_TYPE_PACKED_PIXELS;
1115 info->fix.type_aux = 0;
1116 info->fix.xpanstep = 8;
1117 info->fix.ypanstep = 1;
1118 info->fix.ywrapstep = 0;
1119 info->fix.mmio_start = dinfo->mmio_base_phys;
1120 info->fix.mmio_len = INTEL_REG_SIZE;
1121 info->fix.accel = FB_ACCEL_I830;
1122 update_dinfo(dinfo, &info->var);
1123
1124 return 0;
1125 }
1126
1127 /* Update dinfo to match the active video mode. */
update_dinfo(struct intelfb_info * dinfo,struct fb_var_screeninfo * var)1128 static void update_dinfo(struct intelfb_info *dinfo,
1129 struct fb_var_screeninfo *var)
1130 {
1131 DBG_MSG("update_dinfo\n");
1132
1133 dinfo->bpp = var->bits_per_pixel;
1134 dinfo->depth = intelfb_var_to_depth(var);
1135 dinfo->xres = var->xres;
1136 dinfo->yres = var->xres;
1137 dinfo->pixclock = var->pixclock;
1138
1139 dinfo->info->fix.visual = dinfo->visual;
1140 dinfo->info->fix.line_length = dinfo->pitch;
1141
1142 switch (dinfo->bpp) {
1143 case 8:
1144 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1145 dinfo->pitch = var->xres_virtual;
1146 break;
1147 case 16:
1148 dinfo->visual = FB_VISUAL_TRUECOLOR;
1149 dinfo->pitch = var->xres_virtual * 2;
1150 break;
1151 case 32:
1152 dinfo->visual = FB_VISUAL_TRUECOLOR;
1153 dinfo->pitch = var->xres_virtual * 4;
1154 break;
1155 }
1156
1157 /* Make sure the line length is a aligned correctly. */
1158 if (IS_I9XX(dinfo))
1159 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
1160 else
1161 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1162
1163 if (FIXED_MODE(dinfo))
1164 dinfo->pitch = dinfo->initial_pitch;
1165
1166 dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1167 dinfo->info->fix.line_length = dinfo->pitch;
1168 dinfo->info->fix.visual = dinfo->visual;
1169 }
1170
1171 /* fbops functions */
1172
1173 /***************************************************************
1174 * fbdev interface *
1175 ***************************************************************/
1176
intelfb_open(struct fb_info * info,int user)1177 static int intelfb_open(struct fb_info *info, int user)
1178 {
1179 struct intelfb_info *dinfo = GET_DINFO(info);
1180
1181 if (user)
1182 dinfo->open++;
1183
1184 return 0;
1185 }
1186
intelfb_release(struct fb_info * info,int user)1187 static int intelfb_release(struct fb_info *info, int user)
1188 {
1189 struct intelfb_info *dinfo = GET_DINFO(info);
1190
1191 if (user) {
1192 dinfo->open--;
1193 msleep(1);
1194 if (!dinfo->open)
1195 intelfbhw_disable_irq(dinfo);
1196 }
1197
1198 return 0;
1199 }
1200
intelfb_check_var(struct fb_var_screeninfo * var,struct fb_info * info)1201 static int intelfb_check_var(struct fb_var_screeninfo *var,
1202 struct fb_info *info)
1203 {
1204 int change_var = 0;
1205 struct fb_var_screeninfo v;
1206 struct intelfb_info *dinfo;
1207 static int first = 1;
1208 int i;
1209 /* Good pitches to allow tiling. Don't care about pitches < 1024. */
1210 static const int pitches[] = {
1211 128 * 8,
1212 128 * 16,
1213 128 * 32,
1214 128 * 64,
1215 0
1216 };
1217
1218 DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1219
1220 dinfo = GET_DINFO(info);
1221
1222 /* update the pitch */
1223 if (intelfbhw_validate_mode(dinfo, var) != 0)
1224 return -EINVAL;
1225
1226 v = *var;
1227
1228 for (i = 0; pitches[i] != 0; i++) {
1229 if (pitches[i] >= v.xres_virtual) {
1230 v.xres_virtual = pitches[i];
1231 break;
1232 }
1233 }
1234
1235 /* Check for a supported bpp. */
1236 if (v.bits_per_pixel <= 8)
1237 v.bits_per_pixel = 8;
1238 else if (v.bits_per_pixel <= 16) {
1239 if (v.bits_per_pixel == 16)
1240 v.green.length = 6;
1241 v.bits_per_pixel = 16;
1242 } else if (v.bits_per_pixel <= 32)
1243 v.bits_per_pixel = 32;
1244 else
1245 return -EINVAL;
1246
1247 change_var = ((info->var.xres != var->xres) ||
1248 (info->var.yres != var->yres) ||
1249 (info->var.xres_virtual != var->xres_virtual) ||
1250 (info->var.yres_virtual != var->yres_virtual) ||
1251 (info->var.bits_per_pixel != var->bits_per_pixel) ||
1252 memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1253 memcmp(&info->var.green, &var->green,
1254 sizeof(var->green)) ||
1255 memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1256
1257 if (FIXED_MODE(dinfo) &&
1258 (change_var ||
1259 var->yres_virtual > dinfo->initial_var.yres_virtual ||
1260 var->yres_virtual < dinfo->initial_var.yres ||
1261 var->xoffset || var->nonstd)) {
1262 if (first) {
1263 ERR_MSG("Changing the video mode is not supported.\n");
1264 first = 0;
1265 }
1266 return -EINVAL;
1267 }
1268
1269 switch (intelfb_var_to_depth(&v)) {
1270 case 8:
1271 v.red.offset = v.green.offset = v.blue.offset = 0;
1272 v.red.length = v.green.length = v.blue.length = 8;
1273 v.transp.offset = v.transp.length = 0;
1274 break;
1275 case 15:
1276 v.red.offset = 10;
1277 v.green.offset = 5;
1278 v.blue.offset = 0;
1279 v.red.length = v.green.length = v.blue.length = 5;
1280 v.transp.offset = v.transp.length = 0;
1281 break;
1282 case 16:
1283 v.red.offset = 11;
1284 v.green.offset = 5;
1285 v.blue.offset = 0;
1286 v.red.length = 5;
1287 v.green.length = 6;
1288 v.blue.length = 5;
1289 v.transp.offset = v.transp.length = 0;
1290 break;
1291 case 24:
1292 v.red.offset = 16;
1293 v.green.offset = 8;
1294 v.blue.offset = 0;
1295 v.red.length = v.green.length = v.blue.length = 8;
1296 v.transp.offset = v.transp.length = 0;
1297 break;
1298 case 32:
1299 v.red.offset = 16;
1300 v.green.offset = 8;
1301 v.blue.offset = 0;
1302 v.red.length = v.green.length = v.blue.length = 8;
1303 v.transp.offset = 24;
1304 v.transp.length = 8;
1305 break;
1306 }
1307
1308 if (v.xoffset > v.xres_virtual - v.xres)
1309 v.xoffset = v.xres_virtual - v.xres;
1310 if (v.yoffset > v.yres_virtual - v.yres)
1311 v.yoffset = v.yres_virtual - v.yres;
1312
1313 v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1314 v.transp.msb_right = 0;
1315
1316 *var = v;
1317
1318 return 0;
1319 }
1320
intelfb_set_par(struct fb_info * info)1321 static int intelfb_set_par(struct fb_info *info)
1322 {
1323 struct intelfb_hwstate *hw;
1324 struct intelfb_info *dinfo = GET_DINFO(info);
1325
1326 if (FIXED_MODE(dinfo)) {
1327 ERR_MSG("Changing the video mode is not supported.\n");
1328 return -EINVAL;
1329 }
1330
1331 hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1332 if (!hw)
1333 return -ENOMEM;
1334
1335 DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1336 info->var.yres, info->var.bits_per_pixel);
1337
1338 /*
1339 * Disable VCO prior to timing register change.
1340 */
1341 OUTREG(DPLL_A, INREG(DPLL_A) & ~DPLL_VCO_ENABLE);
1342
1343 intelfb_blank(FB_BLANK_POWERDOWN, info);
1344
1345 if (ACCEL(dinfo, info))
1346 intelfbhw_2d_stop(dinfo);
1347
1348 memcpy(hw, &dinfo->save_state, sizeof(*hw));
1349 if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1350 goto invalid_mode;
1351 if (intelfbhw_program_mode(dinfo, hw, 0))
1352 goto invalid_mode;
1353
1354 #if REGDUMP > 0
1355 intelfbhw_read_hw_state(dinfo, hw, 0);
1356 intelfbhw_print_hw_state(dinfo, hw);
1357 #endif
1358
1359 update_dinfo(dinfo, &info->var);
1360
1361 if (ACCEL(dinfo, info))
1362 intelfbhw_2d_start(dinfo);
1363
1364 intelfb_pan_display(&info->var, info);
1365
1366 intelfb_blank(FB_BLANK_UNBLANK, info);
1367
1368 if (ACCEL(dinfo, info)) {
1369 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1370 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1371 FBINFO_HWACCEL_IMAGEBLIT;
1372 } else
1373 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1374
1375 kfree(hw);
1376 return 0;
1377 invalid_mode:
1378 kfree(hw);
1379 return -EINVAL;
1380 }
1381
intelfb_setcolreg(unsigned regno,unsigned red,unsigned green,unsigned blue,unsigned transp,struct fb_info * info)1382 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1383 unsigned blue, unsigned transp,
1384 struct fb_info *info)
1385 {
1386 struct intelfb_info *dinfo = GET_DINFO(info);
1387
1388 #if VERBOSE > 0
1389 DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1390 #endif
1391
1392 if (regno > 255)
1393 return 1;
1394
1395 if (dinfo->depth == 8) {
1396 red >>= 8;
1397 green >>= 8;
1398 blue >>= 8;
1399
1400 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1401 transp);
1402 }
1403
1404 if (regno < 16) {
1405 switch (dinfo->depth) {
1406 case 15:
1407 dinfo->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
1408 ((green & 0xf800) >> 6) |
1409 ((blue & 0xf800) >> 11);
1410 break;
1411 case 16:
1412 dinfo->pseudo_palette[regno] = (red & 0xf800) |
1413 ((green & 0xfc00) >> 5) |
1414 ((blue & 0xf800) >> 11);
1415 break;
1416 case 24:
1417 dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1418 (green & 0xff00) |
1419 ((blue & 0xff00) >> 8);
1420 break;
1421 }
1422 }
1423
1424 return 0;
1425 }
1426
intelfb_blank(int blank,struct fb_info * info)1427 static int intelfb_blank(int blank, struct fb_info *info)
1428 {
1429 intelfbhw_do_blank(blank, info);
1430 return 0;
1431 }
1432
intelfb_pan_display(struct fb_var_screeninfo * var,struct fb_info * info)1433 static int intelfb_pan_display(struct fb_var_screeninfo *var,
1434 struct fb_info *info)
1435 {
1436 intelfbhw_pan_display(var, info);
1437 return 0;
1438 }
1439
1440 /* When/if we have our own ioctls. */
intelfb_ioctl(struct fb_info * info,unsigned int cmd,unsigned long arg)1441 static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
1442 unsigned long arg)
1443 {
1444 int retval = 0;
1445 struct intelfb_info *dinfo = GET_DINFO(info);
1446 u32 pipe = 0;
1447
1448 switch (cmd) {
1449 case FBIO_WAITFORVSYNC:
1450 if (get_user(pipe, (__u32 __user *)arg))
1451 return -EFAULT;
1452
1453 retval = intelfbhw_wait_for_vsync(dinfo, pipe);
1454 break;
1455 default:
1456 break;
1457 }
1458
1459 return retval;
1460 }
1461
intelfb_fillrect(struct fb_info * info,const struct fb_fillrect * rect)1462 static void intelfb_fillrect (struct fb_info *info,
1463 const struct fb_fillrect *rect)
1464 {
1465 struct intelfb_info *dinfo = GET_DINFO(info);
1466 u32 rop, color;
1467
1468 #if VERBOSE > 0
1469 DBG_MSG("intelfb_fillrect\n");
1470 #endif
1471
1472 if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1473 cfb_fillrect(info, rect);
1474 return;
1475 }
1476
1477 if (rect->rop == ROP_COPY)
1478 rop = PAT_ROP_GXCOPY;
1479 else /* ROP_XOR */
1480 rop = PAT_ROP_GXXOR;
1481
1482 if (dinfo->depth != 8)
1483 color = dinfo->pseudo_palette[rect->color];
1484 else
1485 color = rect->color;
1486
1487 intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1488 rect->width, rect->height, color,
1489 dinfo->pitch, info->var.bits_per_pixel,
1490 rop);
1491 }
1492
intelfb_copyarea(struct fb_info * info,const struct fb_copyarea * region)1493 static void intelfb_copyarea(struct fb_info *info,
1494 const struct fb_copyarea *region)
1495 {
1496 struct intelfb_info *dinfo = GET_DINFO(info);
1497
1498 #if VERBOSE > 0
1499 DBG_MSG("intelfb_copyarea\n");
1500 #endif
1501
1502 if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
1503 cfb_copyarea(info, region);
1504 return;
1505 }
1506
1507 intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1508 region->dy, region->width, region->height,
1509 dinfo->pitch, info->var.bits_per_pixel);
1510 }
1511
intelfb_imageblit(struct fb_info * info,const struct fb_image * image)1512 static void intelfb_imageblit(struct fb_info *info,
1513 const struct fb_image *image)
1514 {
1515 struct intelfb_info *dinfo = GET_DINFO(info);
1516 u32 fgcolor, bgcolor;
1517
1518 #if VERBOSE > 0
1519 DBG_MSG("intelfb_imageblit\n");
1520 #endif
1521
1522 if (!ACCEL(dinfo, info) || dinfo->depth == 4
1523 || image->depth != 1) {
1524 cfb_imageblit(info, image);
1525 return;
1526 }
1527
1528 if (dinfo->depth != 8) {
1529 fgcolor = dinfo->pseudo_palette[image->fg_color];
1530 bgcolor = dinfo->pseudo_palette[image->bg_color];
1531 } else {
1532 fgcolor = image->fg_color;
1533 bgcolor = image->bg_color;
1534 }
1535
1536 if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1537 image->height, image->data,
1538 image->dx, image->dy,
1539 dinfo->pitch, info->var.bits_per_pixel)) {
1540 cfb_imageblit(info, image);
1541 return;
1542 }
1543 }
1544
intelfb_cursor(struct fb_info * info,struct fb_cursor * cursor)1545 static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1546 {
1547 struct intelfb_info *dinfo = GET_DINFO(info);
1548 u32 physical;
1549 #if VERBOSE > 0
1550 DBG_MSG("intelfb_cursor\n");
1551 #endif
1552
1553 if (!dinfo->hwcursor)
1554 return -ENODEV;
1555
1556 intelfbhw_cursor_hide(dinfo);
1557
1558 /* If XFree killed the cursor - restore it */
1559 physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
1560 (dinfo->cursor.offset << 12);
1561
1562 if (INREG(CURSOR_A_BASEADDR) != physical) {
1563 u32 fg, bg;
1564
1565 DBG_MSG("the cursor was killed - restore it !!\n");
1566 DBG_MSG("size %d, %d pos %d, %d\n",
1567 cursor->image.width, cursor->image.height,
1568 cursor->image.dx, cursor->image.dy);
1569
1570 intelfbhw_cursor_init(dinfo);
1571 intelfbhw_cursor_reset(dinfo);
1572 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1573 cursor->image.dy);
1574
1575 if (dinfo->depth != 8) {
1576 fg =dinfo->pseudo_palette[cursor->image.fg_color];
1577 bg =dinfo->pseudo_palette[cursor->image.bg_color];
1578 } else {
1579 fg = cursor->image.fg_color;
1580 bg = cursor->image.bg_color;
1581 }
1582 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1583 intelfbhw_cursor_load(dinfo, cursor->image.width,
1584 cursor->image.height,
1585 dinfo->cursor_src);
1586
1587 if (cursor->enable)
1588 intelfbhw_cursor_show(dinfo);
1589 return 0;
1590 }
1591
1592 if (cursor->set & FB_CUR_SETPOS) {
1593 u32 dx, dy;
1594
1595 dx = cursor->image.dx - info->var.xoffset;
1596 dy = cursor->image.dy - info->var.yoffset;
1597
1598 intelfbhw_cursor_setpos(dinfo, dx, dy);
1599 }
1600
1601 if (cursor->set & FB_CUR_SETSIZE) {
1602 if (cursor->image.width > 64 || cursor->image.height > 64)
1603 return -ENXIO;
1604
1605 intelfbhw_cursor_reset(dinfo);
1606 }
1607
1608 if (cursor->set & FB_CUR_SETCMAP) {
1609 u32 fg, bg;
1610
1611 if (dinfo->depth != 8) {
1612 fg = dinfo->pseudo_palette[cursor->image.fg_color];
1613 bg = dinfo->pseudo_palette[cursor->image.bg_color];
1614 } else {
1615 fg = cursor->image.fg_color;
1616 bg = cursor->image.bg_color;
1617 }
1618
1619 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1620 }
1621
1622 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1623 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1624 u32 size = s_pitch * cursor->image.height;
1625 u8 *dat = (u8 *) cursor->image.data;
1626 u8 *msk = (u8 *) cursor->mask;
1627 u8 src[64];
1628 u32 i;
1629
1630 if (cursor->image.depth != 1)
1631 return -ENXIO;
1632
1633 switch (cursor->rop) {
1634 case ROP_XOR:
1635 for (i = 0; i < size; i++)
1636 src[i] = dat[i] ^ msk[i];
1637 break;
1638 case ROP_COPY:
1639 default:
1640 for (i = 0; i < size; i++)
1641 src[i] = dat[i] & msk[i];
1642 break;
1643 }
1644
1645 /* save the bitmap to restore it when XFree will
1646 make the cursor dirty */
1647 memcpy(dinfo->cursor_src, src, size);
1648
1649 intelfbhw_cursor_load(dinfo, cursor->image.width,
1650 cursor->image.height, src);
1651 }
1652
1653 if (cursor->enable)
1654 intelfbhw_cursor_show(dinfo);
1655
1656 return 0;
1657 }
1658
intelfb_sync(struct fb_info * info)1659 static int intelfb_sync(struct fb_info *info)
1660 {
1661 struct intelfb_info *dinfo = GET_DINFO(info);
1662
1663 #if VERBOSE > 0
1664 DBG_MSG("intelfb_sync\n");
1665 #endif
1666
1667 if (dinfo->ring_lockup)
1668 return 0;
1669
1670 intelfbhw_do_sync(dinfo);
1671 return 0;
1672 }
1673
1674
