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[SERIAL] Clean up and fix tty transmission start/stoping
[deliverable/linux.git] / drivers / video / intelfb / intelfbdrv.c
1 /*
2 * intelfb
3 *
4 * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G
5 * integrated graphics chips.
6 *
7 * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org>
8 * 2004 Sylvain Meyer
9 *
10 * This driver consists of two parts. The first part (intelfbdrv.c) provides
11 * the basic fbdev interfaces, is derived in part from the radeonfb and
12 * vesafb drivers, and is covered by the GPL. The second part (intelfbhw.c)
13 * provides the code to program the hardware. Most of it is derived from
14 * the i810/i830 XFree86 driver. The HW-specific code is covered here
15 * under a dual license (GPL and MIT/XFree86 license).
16 *
17 * Author: David Dawes
18 *
19 */
20
21 /* $DHD: intelfb/intelfbdrv.c,v 1.20 2003/06/27 15:17:40 dawes Exp $ */
22
23 /*
24 * Changes:
25 * 01/2003 - Initial driver (0.1.0), no mode switching, no acceleration.
26 * This initial version is a basic core that works a lot like
27 * the vesafb driver. It must be built-in to the kernel,
28 * and the initial video mode must be set with vga=XXX at
29 * boot time. (David Dawes)
30 *
31 * 01/2003 - Version 0.2.0: Mode switching added, colormap support
32 * implemented, Y panning, and soft screen blanking implemented.
33 * No acceleration yet. (David Dawes)
34 *
35 * 01/2003 - Version 0.3.0: fbcon acceleration support added. Module
36 * option handling added. (David Dawes)
37 *
38 * 01/2003 - Version 0.4.0: fbcon HW cursor support added. (David Dawes)
39 *
40 * 01/2003 - Version 0.4.1: Add auto-generation of built-in modes.
41 * (David Dawes)
42 *
43 * 02/2003 - Version 0.4.2: Add check for active non-CRT devices, and
44 * mode validation checks. (David Dawes)
45 *
46 * 02/2003 - Version 0.4.3: Check when the VC is in graphics mode so that
47 * acceleration is disabled while an XFree86 server is running.
48 * (David Dawes)
49 *
50 * 02/2003 - Version 0.4.4: Monitor DPMS support. (David Dawes)
51 *
52 * 02/2003 - Version 0.4.5: Basic XFree86 + fbdev working. (David Dawes)
53 *
54 * 02/2003 - Version 0.5.0: Modify to work with the 2.5.32 kernel as well
55 * as 2.4.x kernels. (David Dawes)
56 *
57 * 02/2003 - Version 0.6.0: Split out HW-specifics into a separate file.
58 * (David Dawes)
59 *
60 * 02/2003 - Version 0.7.0: Test on 852GM/855GM. Acceleration and HW
61 * cursor are disabled on this platform. (David Dawes)
62 *
63 * 02/2003 - Version 0.7.1: Test on 845G. Acceleration is disabled
64 * on this platform. (David Dawes)
65 *
66 * 02/2003 - Version 0.7.2: Test on 830M. Acceleration and HW
67 * cursor are disabled on this platform. (David Dawes)
68 *
69 * 02/2003 - Version 0.7.3: Fix 8-bit modes for mobile platforms
70 * (David Dawes)
71 *
72 * 02/2003 - Version 0.7.4: Add checks for FB and FBCON_HAS_CFB* configured
73 * in the kernel, and add mode bpp verification and default
74 * bpp selection based on which FBCON_HAS_CFB* are configured.
75 * (David Dawes)
76 *
77 * 02/2003 - Version 0.7.5: Add basic package/install scripts based on the
78 * DRI packaging scripts. (David Dawes)
79 *
80 * 04/2003 - Version 0.7.6: Fix typo that affects builds with SMP-enabled
81 * kernels. (David Dawes, reported by Anupam).
82 *
83 * 06/2003 - Version 0.7.7:
84 * Fix Makefile.kernel build problem (Tsutomu Yasuda).
85 * Fix mis-placed #endif (2.4.21 kernel).
86 *
87 * 09/2004 - Version 0.9.0 - by Sylvain Meyer
88 * Port to linux 2.6 kernel fbdev
89 * Fix HW accel and HW cursor on i845G
90 * Use of agpgart for fb memory reservation
91 * Add mtrr support
92 *
93 * 10/2004 - Version 0.9.1
94 * Use module_param instead of old MODULE_PARM
95 * Some cleanup
96 *
97 * 11/2004 - Version 0.9.2
98 * Add vram option to reserve more memory than stolen by BIOS
99 * Fix intelfbhw_pan_display typo
100 * Add __initdata annotations
101 *
102 * TODO:
103 *
104 *
105 * Wish List:
106 *
107 *
108 */
109
110 #include <linux/config.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/tty.h>
117 #include <linux/slab.h>
118 #include <linux/delay.h>
119 #include <linux/fb.h>
120 #include <linux/console.h>
121 #include <linux/selection.h>
122 #include <linux/ioport.h>
123 #include <linux/init.h>
124 #include <linux/pci.h>
125 #include <linux/vmalloc.h>
126 #include <linux/kd.h>
127 #include <linux/vt_kern.h>
128 #include <linux/pagemap.h>
129 #include <linux/version.h>
130
131 #include <asm/io.h>
132
133 #ifdef CONFIG_MTRR
134 #include <asm/mtrr.h>
135 #endif
136
137 #include "intelfb.h"
138 #include "intelfbhw.h"
139
140 static void __devinit get_initial_mode(struct intelfb_info *dinfo);
141 static void update_dinfo(struct intelfb_info *dinfo,
142 struct fb_var_screeninfo *var);
143 static int intelfb_get_fix(struct fb_fix_screeninfo *fix,
144 struct fb_info *info);
145
146 static int intelfb_check_var(struct fb_var_screeninfo *var,
147 struct fb_info *info);
148 static int intelfb_set_par(struct fb_info *info);
149 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
150 unsigned blue, unsigned transp,
151 struct fb_info *info);
152
153 static int intelfb_blank(int blank, struct fb_info *info);
154 static int intelfb_pan_display(struct fb_var_screeninfo *var,
155 struct fb_info *info);
156
157 static void intelfb_fillrect(struct fb_info *info,
158 const struct fb_fillrect *rect);
159 static void intelfb_copyarea(struct fb_info *info,
160 const struct fb_copyarea *region);
161 static void intelfb_imageblit(struct fb_info *info,
162 const struct fb_image *image);
163 static int intelfb_cursor(struct fb_info *info,
164 struct fb_cursor *cursor);
165
166 static int intelfb_sync(struct fb_info *info);
167
168 static int intelfb_ioctl(struct inode *inode, struct file *file,
169 unsigned int cmd, unsigned long arg,
170 struct fb_info *info);
171
172 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
173 const struct pci_device_id *ent);
174 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
175 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
176
177 /*
178 * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
179 * mobile chipsets from being registered.
180 */
181 #if DETECT_VGA_CLASS_ONLY
182 #define INTELFB_CLASS_MASK ~0 << 8
183 #else
184 #define INTELFB_CLASS_MASK 0
185 #endif
186
187 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
188 { 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 },
189 { 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 },
190 { 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 },
191 { 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 },
192 { 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 },
193 { 0, }
194 };
195
196 /* Global data */
197 static int num_registered = 0;
198
199 /* fb ops */
200 static struct fb_ops intel_fb_ops = {
201 .owner = THIS_MODULE,
202 .fb_check_var = intelfb_check_var,
203 .fb_set_par = intelfb_set_par,
204 .fb_setcolreg = intelfb_setcolreg,
205 .fb_blank = intelfb_blank,
206 .fb_pan_display = intelfb_pan_display,
207 .fb_fillrect = intelfb_fillrect,
208 .fb_copyarea = intelfb_copyarea,
209 .fb_imageblit = intelfb_imageblit,
210 .fb_cursor = intelfb_cursor,
211 .fb_sync = intelfb_sync,
212 .fb_ioctl = intelfb_ioctl
213 };
214
215 /* PCI driver module table */
216 static struct pci_driver intelfb_driver = {
217 .name = "intelfb",
218 .id_table = intelfb_pci_table,
219 .probe = intelfb_pci_register,
220 .remove = __devexit_p(intelfb_pci_unregister)
221 };
222
223 /* Module description/parameters */
224 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
225 "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
226 MODULE_DESCRIPTION(
227 "Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS " chipsets");
228 MODULE_LICENSE("Dual BSD/GPL");
229 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
230
231 static int accel = 1;
232 static int vram = 4;
233 static int hwcursor = 1;
234 static int mtrr = 1;
235 static int fixed = 0;
236 static int noinit = 0;
237 static int noregister = 0;
238 static int probeonly = 0;
239 static int idonly = 0;
240 static int bailearly = 0;
241 static int voffset = 48;
242 static char *mode = NULL;
243
244 module_param(accel, bool, S_IRUGO);
245 MODULE_PARM_DESC(accel, "Enable console acceleration");
246 module_param(vram, int, S_IRUGO);
247 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
248 module_param(voffset, int, S_IRUGO);
249 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
250 module_param(hwcursor, bool, S_IRUGO);
251 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
252 module_param(mtrr, bool, S_IRUGO);
253 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
254 module_param(fixed, bool, S_IRUGO);
255 MODULE_PARM_DESC(fixed, "Disable mode switching");
256 module_param(noinit, bool, 0);
257 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
258 module_param(noregister, bool, 0);
259 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
260 module_param(probeonly, bool, 0);
261 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
262 module_param(idonly, bool, 0);
263 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
264 module_param(bailearly, bool, 0);
265 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
266 module_param(mode, charp, S_IRUGO);
267 MODULE_PARM_DESC(mode,
268 "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
269
270 #ifndef MODULE
271 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
272 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name), NULL, 0)
273 #define OPT_STRVAL(opt, name) (opt + strlen(name))
274
275 static __inline__ char *
276 get_opt_string(const char *this_opt, const char *name)
277 {
278 const char *p;
279 int i;
280 char *ret;
281
282 p = OPT_STRVAL(this_opt, name);
283 i = 0;
284 while (p[i] && p[i] != ' ' && p[i] != ',')
285 i++;
286 ret = kmalloc(i + 1, GFP_KERNEL);
287 if (ret) {
288 strncpy(ret, p, i);
289 ret[i] = '\0';
290 }
291 return ret;
292 }
293
294 static __inline__ int
295 get_opt_int(const char *this_opt, const char *name, int *ret)
296 {
297 if (!ret)
298 return 0;
299
300 if (!OPT_EQUAL(this_opt, name))
301 return 0;
302
303 *ret = OPT_INTVAL(this_opt, name);
304 return 1;
305 }
306
307 static __inline__ int
308 get_opt_bool(const char *this_opt, const char *name, int *ret)
309 {
310 if (!ret)
311 return 0;
312
313 if (OPT_EQUAL(this_opt, name)) {
314 if (this_opt[strlen(name)] == '=')
315 *ret = simple_strtoul(this_opt + strlen(name) + 1,
316 NULL, 0);
317 else
318 *ret = 1;
319 } else {
320 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
321 *ret = 0;
322 else
323 return 0;
324 }
325 return 1;
326 }
327
328 static int __init
329 intelfb_setup(char *options)
330 {
331 char *this_opt;
332
333 DBG_MSG("intelfb_setup\n");
334
335 if (!options || !*options) {
336 DBG_MSG("no options\n");
337 return 0;
338 } else
339 DBG_MSG("options: %s\n", options);
340
341 /*
342 * These are the built-in options analogous to the module parameters
343 * defined above.
344 *
345 * The syntax is:
346 *
347 * video=intelfb:[mode][,<param>=<val>] ...
348 *
349 * e.g.,
350 *
351 * video=intelfb:1024x768-16@75,accel=0
352 */
353
354 while ((this_opt = strsep(&options, ","))) {
355 if (!*this_opt)
356 continue;
357 if (get_opt_bool(this_opt, "accel", &accel))
358 ;
359 else if (get_opt_int(this_opt, "vram", &vram))
360 ;
361 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
362 ;
363 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
364 ;
365 else if (get_opt_bool(this_opt, "fixed", &fixed))
366 ;
367 else if (get_opt_bool(this_opt, "init", &noinit))
368 noinit = !noinit;
369 else if (OPT_EQUAL(this_opt, "mode="))
370 mode = get_opt_string(this_opt, "mode=");
371 else
372 mode = this_opt;
373 }
374
375 return 0;
376 }
377
378 #endif
379
380 static int __init
381 intelfb_init(void)
382 {
383 #ifndef MODULE
384 char *option = NULL;
385 #endif
386
387 DBG_MSG("intelfb_init\n");
388
389 INF_MSG("Framebuffer driver for "
390 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
391 INF_MSG("Version " INTELFB_VERSION "\n");
392
393 if (idonly)
394 return -ENODEV;
395
396 #ifndef MODULE
397 if (fb_get_options("intelfb", &option))
398 return -ENODEV;
399 intelfb_setup(option);
400 #endif
401
402 return pci_register_driver(&intelfb_driver);
403 }
404
405 static void __exit
406 intelfb_exit(void)
407 {
408 DBG_MSG("intelfb_exit\n");
409 pci_unregister_driver(&intelfb_driver);
410 }
411
412 module_init(intelfb_init);
413 module_exit(intelfb_exit);
414
415 /***************************************************************
416 * mtrr support functions *
417 ***************************************************************/
418
419 #ifdef CONFIG_MTRR
420 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
421 {
422 dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
423 dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
424 if (dinfo->mtrr_reg < 0) {
425 ERR_MSG("unable to set MTRR\n");
426 return;
427 }
428 dinfo->has_mtrr = 1;
429 }
430 static inline void unset_mtrr(struct intelfb_info *dinfo)
431 {
432 if (dinfo->has_mtrr)
433 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
434 dinfo->aperture.size);
435 }
436 #else
437 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
438
439 #define unset_mtrr(x) do { } while (0)
440 #endif /* CONFIG_MTRR */
441
442 /***************************************************************
443 * driver init / cleanup *
444 ***************************************************************/
445
446 static void
447 cleanup(struct intelfb_info *dinfo)
448 {
449 DBG_MSG("cleanup\n");
450
451 if (!dinfo)
452 return;
453
454 fb_dealloc_cmap(&dinfo->info->cmap);
455 kfree(dinfo->info->pixmap.addr);
456
457 if (dinfo->registered)
458 unregister_framebuffer(dinfo->info);
459
460 unset_mtrr(dinfo);
461
462 if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
463 agp_unbind_memory(dinfo->gtt_fb_mem);
464 agp_free_memory(dinfo->gtt_fb_mem);
465 }
466 if (dinfo->gtt_cursor_mem) {
467 agp_unbind_memory(dinfo->gtt_cursor_mem);
468 agp_free_memory(dinfo->gtt_cursor_mem);
469 }
470 if (dinfo->gtt_ring_mem) {
471 agp_unbind_memory(dinfo->gtt_ring_mem);
472 agp_free_memory(dinfo->gtt_ring_mem);
473 }
474
475 if (dinfo->mmio_base)
476 iounmap((void __iomem *)dinfo->mmio_base);
477 if (dinfo->aperture.virtual)
478 iounmap((void __iomem *)dinfo->aperture.virtual);
479
480 if (dinfo->mmio_base_phys)
481 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
482 if (dinfo->aperture.physical)
483 release_mem_region(dinfo->aperture.physical,
484 dinfo->aperture.size);
485 framebuffer_release(dinfo->info);
486 }
487
488 #define bailout(dinfo) do { \
489 DBG_MSG("bailout\n"); \
490 cleanup(dinfo); \
491 INF_MSG("Not going to register framebuffer, exiting...\n"); \
492 return -ENODEV; \
493 } while (0)
494
495
496 static int __devinit
497 intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
498 {
499 struct fb_info *info;
500 struct intelfb_info *dinfo;
501 int i, j, err, dvo;
502 int aperture_size, stolen_size;
503 struct agp_kern_info gtt_info;
504 int agp_memtype;
505 const char *s;
506 struct agp_bridge_data *bridge;
507 int aperture_bar = 0;
508 int mmio_bar = 1;
509 int offset;
510
511 DBG_MSG("intelfb_pci_register\n");
512
513 num_registered++;
514 if (num_registered != 1) {
515 ERR_MSG("Attempted to register %d devices "
516 "(should be only 1).\n", num_registered);
517 return -ENODEV;
518 }
519
520 info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
521 if (!info) {
522 ERR_MSG("Could not allocate memory for intelfb_info.\n");
523 return -ENODEV;
524 }
525 if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
526 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
527 goto err_out_cmap;
528 return -ENODEV;
529 }
530
531 dinfo = info->par;
532 dinfo->info = info;
533 dinfo->fbops = &intel_fb_ops;
534 dinfo->pdev = pdev;
535
536 /* Reserve pixmap space. */
537 info->pixmap.addr = kmalloc(64 * 1024, GFP_KERNEL);
538 if (info->pixmap.addr == NULL) {
539 ERR_MSG("Cannot reserve pixmap memory.\n");
540 goto err_out_pixmap;
541 }
542 memset(info->pixmap.addr, 0, 64 * 1024);
543
544 /* set early this option because it could be changed by tv encoder
545 driver */
546 dinfo->fixed_mode = fixed;
547
548 /* Enable device. */
549 if ((err = pci_enable_device(pdev))) {
550 ERR_MSG("Cannot enable device.\n");
551 cleanup(dinfo);
552 return -ENODEV;
553 }
554
555 /* Set base addresses. */
556 if (ent->device == PCI_DEVICE_ID_INTEL_915G) {
557 aperture_bar = 2;
558 mmio_bar = 0;
559 /* Disable HW cursor on 915G (not implemented yet) */
560 hwcursor = 0;
561 }
562 dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
563 dinfo->aperture.size = pci_resource_len(pdev, aperture_bar);
564 dinfo->mmio_base_phys = pci_resource_start(pdev, mmio_bar);
565 DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
566 (unsigned long long)pci_resource_start(pdev, aperture_bar),
567 (unsigned long long)pci_resource_len(pdev, aperture_bar),
568 (unsigned long long)pci_resource_start(pdev, mmio_bar),
569 (unsigned long long)pci_resource_len(pdev, mmio_bar));
570
571 /* Reserve the fb and MMIO regions */
572 if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
573 INTELFB_MODULE_NAME)) {
574 ERR_MSG("Cannot reserve FB region.\n");
575 cleanup(dinfo);
576 return -ENODEV;
577 }
578 if (!request_mem_region(dinfo->mmio_base_phys,
579 INTEL_REG_SIZE,
580 INTELFB_MODULE_NAME)) {
581 ERR_MSG("Cannot reserve MMIO region.\n");
582 cleanup(dinfo);
583 return -ENODEV;
584 }
585
586 /* Get the chipset info. */
587 dinfo->pci_chipset = pdev->device;
588
589 if (intelfbhw_get_chipset(pdev, &dinfo->name, &dinfo->chipset,
590 &dinfo->mobile)) {
591 cleanup(dinfo);
592 return -ENODEV;
593 }
594
595 if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
596 cleanup(dinfo);
597 return -ENODEV;
598 }
599
600 INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
601 "stolen memory %dkB\n",
602 pdev->bus->number, PCI_SLOT(pdev->devfn),
603 PCI_FUNC(pdev->devfn), dinfo->name,
604 BtoMB(aperture_size), BtoKB(stolen_size));
605
606 /* Set these from the options. */
607 dinfo->accel = accel;
608 dinfo->hwcursor = hwcursor;
609
610 if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
611 INF_MSG("Acceleration is not supported for the %s chipset.\n",
612 dinfo->name);
613 dinfo->accel = 0;
614 }
615
616 if (MB(voffset) < stolen_size)
617 offset = (stolen_size >> 12);
618 else
619 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
620
621 /* Framebuffer parameters - Use all the stolen memory if >= vram */
622 if (ROUND_UP_TO_PAGE(stolen_size) >= ((offset << 12) + MB(vram))) {
623 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
624 dinfo->fb.offset = 0;
625 dinfo->fbmem_gart = 0;
626 } else {
627 dinfo->fb.size = MB(vram);
628 dinfo->fbmem_gart = 1;
629 }
630
631 /* Allocate space for the ring buffer and HW cursor if enabled. */
632 if (dinfo->accel) {
633 dinfo->ring.size = RINGBUFFER_SIZE;
634 dinfo->ring_tail_mask = dinfo->ring.size - 1;
635 }
636 if (dinfo->hwcursor) {
637 dinfo->cursor.size = HW_CURSOR_SIZE;
638 }
639
640 /* Use agpgart to manage the GATT */
641 if (!(bridge = agp_backend_acquire(pdev))) {
642 ERR_MSG("cannot acquire agp\n");
643 cleanup(dinfo);
644 return -ENODEV;
645 }
646
647 /* get the current gatt info */
648 if (agp_copy_info(bridge, &gtt_info)) {
649 ERR_MSG("cannot get agp info\n");
650 agp_backend_release(bridge);
651 cleanup(dinfo);
652 return -ENODEV;
653 }
654
655 /* set the mem offsets - set them after the already used pages */
656 if (dinfo->accel) {
657 dinfo->ring.offset = offset + gtt_info.current_memory;
658 }
659 if (dinfo->hwcursor) {
660 dinfo->cursor.offset = offset +
661 + gtt_info.current_memory + (dinfo->ring.size >> 12);
662 }
663 if (dinfo->fbmem_gart) {
664 dinfo->fb.offset = offset +
665 + gtt_info.current_memory + (dinfo->ring.size >> 12)
666 + (dinfo->cursor.size >> 12);
667 }
668
669 /* Map the fb and MMIO regions */
670 /* ioremap only up to the end of used aperture */
671 dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
672 (dinfo->aperture.physical, (dinfo->fb.offset << 12)
673 + dinfo->fb.size);
674 if (!dinfo->aperture.virtual) {
675 ERR_MSG("Cannot remap FB region.\n");
676 cleanup(dinfo);
677 return -ENODEV;
678 }
679
680 dinfo->mmio_base =
681 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
682 INTEL_REG_SIZE);
683 if (!dinfo->mmio_base) {
684 ERR_MSG("Cannot remap MMIO region.\n");
685 cleanup(dinfo);
686 return -ENODEV;
687 }
688
689 /* Allocate memories (which aren't stolen) */
690 if (dinfo->accel) {
691 if (!(dinfo->gtt_ring_mem =
692 agp_allocate_memory(bridge, dinfo->ring.size >> 12,
693 AGP_NORMAL_MEMORY))) {
694 ERR_MSG("cannot allocate ring buffer memory\n");
695 agp_backend_release(bridge);
696 cleanup(dinfo);
697 return -ENOMEM;
698 }
699 if (agp_bind_memory(dinfo->gtt_ring_mem,
700 dinfo->ring.offset)) {
701 ERR_MSG("cannot bind ring buffer memory\n");
702 agp_backend_release(bridge);
703 cleanup(dinfo);
704 return -EBUSY;
705 }
706 dinfo->ring.physical = dinfo->aperture.physical
707 + (dinfo->ring.offset << 12);
708 dinfo->ring.virtual = dinfo->aperture.virtual
709 + (dinfo->ring.offset << 12);
710 dinfo->ring_head = dinfo->ring.virtual;
711 }
712 if (dinfo->hwcursor) {
713 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
714 : AGP_NORMAL_MEMORY;
715 if (!(dinfo->gtt_cursor_mem =
716 agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
717 agp_memtype))) {
718 ERR_MSG("cannot allocate cursor memory\n");
719 agp_backend_release(bridge);
720 cleanup(dinfo);
721 return -ENOMEM;
722 }
723 if (agp_bind_memory(dinfo->gtt_cursor_mem,
724 dinfo->cursor.offset)) {
725 ERR_MSG("cannot bind cursor memory\n");
726 agp_backend_release(bridge);
727 cleanup(dinfo);
728 return -EBUSY;
729 }
730 if (dinfo->mobile)
731 dinfo->cursor.physical
732 = dinfo->gtt_cursor_mem->physical;
733 else
734 dinfo->cursor.physical = dinfo->aperture.physical
735 + (dinfo->cursor.offset << 12);
736 dinfo->cursor.virtual = dinfo->aperture.virtual
737 + (dinfo->cursor.offset << 12);
738 }
739 if (dinfo->fbmem_gart) {
740 if (!(dinfo->gtt_fb_mem =
741 agp_allocate_memory(bridge, dinfo->fb.size >> 12,
742 AGP_NORMAL_MEMORY))) {
743 WRN_MSG("cannot allocate framebuffer memory - use "
744 "the stolen one\n");
745 dinfo->fbmem_gart = 0;
746 }
747 if (agp_bind_memory(dinfo->gtt_fb_mem,
748 dinfo->fb.offset)) {
749 WRN_MSG("cannot bind framebuffer memory - use "
750 "the stolen one\n");
751 dinfo->fbmem_gart = 0;
752 }
753 }
754
755 /* update framebuffer memory parameters */
756 if (!dinfo->fbmem_gart)
757 dinfo->fb.offset = 0; /* starts at offset 0 */
758 dinfo->fb.physical = dinfo->aperture.physical
759 + (dinfo->fb.offset << 12);
760 dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
761 dinfo->fb_start = dinfo->fb.offset << 12;
762
763 /* release agpgart */
764 agp_backend_release(bridge);
765
766 if (mtrr)
767 set_mtrr(dinfo);
768
769 DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%x)\n",
770 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
771 (u32 __iomem ) dinfo->fb.virtual);
772 DBG_MSG("MMIO: 0x%x/0x%x (0x%x)\n",
773 dinfo->mmio_base_phys, INTEL_REG_SIZE,
774 (u32 __iomem) dinfo->mmio_base);
775 DBG_MSG("ring buffer: 0x%x/0x%x (0x%x)\n",
776 dinfo->ring.physical, dinfo->ring.size,
777 (u32 __iomem ) dinfo->ring.virtual);
778 DBG_MSG("HW cursor: 0x%x/0x%x (0x%x) (offset 0x%x) (phys 0x%x)\n",
779 dinfo->cursor.physical, dinfo->cursor.size,
780 (u32 __iomem ) dinfo->cursor.virtual, dinfo->cursor.offset,
781 dinfo->cursor.physical);
782
783 DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
784 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
785 DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
786
787 if (probeonly)
788 bailout(dinfo);
789
790 /*
791 * Check if the LVDS port or any DVO ports are enabled. If so,
792 * don't allow mode switching
793 */
794 dvo = intelfbhw_check_non_crt(dinfo);
795 if (dvo) {
796 dinfo->fixed_mode = 1;
797 WRN_MSG("Non-CRT device is enabled ( ");
798 i = 0;
799 while (dvo) {
800 if (dvo & 1) {
801 s = intelfbhw_dvo_to_string(1 << i);
802 if (s)
803 printk("%s ", s);
804 }
805 dvo >>= 1;
806 ++i;
807 }
808 printk("). Disabling mode switching.\n");
809 }
810
811 if (bailearly == 1)
812 bailout(dinfo);
813
814 if (FIXED_MODE(dinfo) && ORIG_VIDEO_ISVGA != VIDEO_TYPE_VLFB) {
815 ERR_MSG("Video mode must be programmed at boot time.\n");
816 cleanup(dinfo);
817 return -ENODEV;
818 }
819
820 if (bailearly == 2)
821 bailout(dinfo);
822
823 /* Initialise dinfo and related data. */
824 /* If an initial mode was programmed at boot time, get its details. */
825 if (ORIG_VIDEO_ISVGA == VIDEO_TYPE_VLFB)
826 get_initial_mode(dinfo);
827
828 if (bailearly == 3)
829 bailout(dinfo);
830
831 if (FIXED_MODE(dinfo)) {
832 /* remap fb address */
833 update_dinfo(dinfo, &dinfo->initial_var);
834 }
835
836 if (bailearly == 4)
837 bailout(dinfo);
838
839
840 if (intelfb_set_fbinfo(dinfo)) {
841 cleanup(dinfo);
842 return -ENODEV;
843 }
844
845 if (bailearly == 5)
846 bailout(dinfo);
847
848 for (i = 0; i < 16; i++) {
849 j = color_table[i];
850 dinfo->palette[i].red = default_red[j];
851 dinfo->palette[i].green = default_grn[j];
852 dinfo->palette[i].blue = default_blu[j];
853 }
854
855 if (bailearly == 6)
856 bailout(dinfo);
857
858 pci_set_drvdata(pdev, dinfo);
859
860 /* Save the initial register state. */
861 i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
862 bailearly > 6 ? bailearly - 6 : 0);
863 if (i != 0) {
864 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
865 bailout(dinfo);
866 }
867
868 intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
869
870 if (bailearly == 18)
871 bailout(dinfo);
872
873 /* Cursor initialisation */
874 if (dinfo->hwcursor) {
875 intelfbhw_cursor_init(dinfo);
876 intelfbhw_cursor_reset(dinfo);
877 }
878
879 if (bailearly == 19)
880 bailout(dinfo);
881
882 /* 2d acceleration init */
883 if (dinfo->accel)
884 intelfbhw_2d_start(dinfo);
885
886 if (bailearly == 20)
887 bailout(dinfo);
888
889 if (noregister)
890 bailout(dinfo);
891
892 if (register_framebuffer(dinfo->info) < 0) {
893 ERR_MSG("Cannot register framebuffer.\n");
894 cleanup(dinfo);
895 return -ENODEV;
896 }
897
898 dinfo->registered = 1;
899
900 return 0;
901
902 err_out_pixmap:
903 fb_dealloc_cmap(&info->cmap);
904 err_out_cmap:
905 framebuffer_release(info);
906 return -ENODEV;
907 }
908
909 static void __devexit
910 intelfb_pci_unregister(struct pci_dev *pdev)
911 {
912 struct intelfb_info *dinfo = pci_get_drvdata(pdev);
913
914 DBG_MSG("intelfb_pci_unregister\n");
915
916 if (!dinfo)
917 return;
918
919 cleanup(dinfo);
920
921 pci_set_drvdata(pdev, NULL);
922 }
923
924 /***************************************************************
925 * helper functions *
926 ***************************************************************/
927
928 int __inline__
929 intelfb_var_to_depth(const struct fb_var_screeninfo *var)
930 {
931 DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
932 var->bits_per_pixel, var->green.length);
933
934 switch (var->bits_per_pixel) {
935 case 16:
936 return (var->green.length == 6) ? 16 : 15;
937 case 32:
938 return 24;
939 default:
940 return var->bits_per_pixel;
941 }
942 }
943
944
945 static __inline__ int
946 var_to_refresh(const struct fb_var_screeninfo *var)
947 {
948 int xtot = var->xres + var->left_margin + var->right_margin +
949 var->hsync_len;
950 int ytot = var->yres + var->upper_margin + var->lower_margin +
951 var->vsync_len;
952
953 return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
954 }
955
956 /***************************************************************
957 * Various intialisation functions *
958 ***************************************************************/
959
960 static void __devinit
961 get_initial_mode(struct intelfb_info *dinfo)
962 {
963 struct fb_var_screeninfo *var;
964 int xtot, ytot;
965
966 DBG_MSG("get_initial_mode\n");
967
968 dinfo->initial_vga = 1;
969 dinfo->initial_fb_base = screen_info.lfb_base;
970 dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
971 dinfo->initial_pitch = screen_info.lfb_linelength;
972
973 var = &dinfo->initial_var;
974 memset(var, 0, sizeof(*var));
975 var->xres = screen_info.lfb_width;
976 var->yres = screen_info.lfb_height;
977 var->bits_per_pixel = screen_info.lfb_depth;
978 switch (screen_info.lfb_depth) {
979 case 15:
980 var->bits_per_pixel = 16;
981 break;
982 case 24:
983 var->bits_per_pixel = 32;
984 break;
985 }
986
987 DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
988 dinfo->initial_fb_base, dinfo->initial_video_ram,
989 BtoKB(dinfo->initial_video_ram));
990
991 DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
992 var->xres, var->yres, var->bits_per_pixel,
993 dinfo->initial_pitch);
994
995 /* Dummy timing values (assume 60Hz) */
996 var->left_margin = (var->xres / 8) & 0xf8;
997 var->right_margin = 32;
998 var->upper_margin = 16;
999 var->lower_margin = 4;
1000 var->hsync_len = (var->xres / 8) & 0xf8;
1001 var->vsync_len = 4;
1002
1003 xtot = var->xres + var->left_margin +
1004 var->right_margin + var->hsync_len;
1005 ytot = var->yres + var->upper_margin +
1006 var->lower_margin + var->vsync_len;
1007 var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1008
1009 var->height = -1;
1010 var->width = -1;
1011
1012 if (var->bits_per_pixel > 8) {
1013 var->red.offset = screen_info.red_pos;
1014 var->red.length = screen_info.red_size;
1015 var->green.offset = screen_info.green_pos;
1016 var->green.length = screen_info.green_size;
1017 var->blue.offset = screen_info.blue_pos;
1018 var->blue.length = screen_info.blue_size;
1019 var->transp.offset = screen_info.rsvd_pos;
1020 var->transp.length = screen_info.rsvd_size;
1021 } else {
1022 var->red.length = 8;
1023 var->green.length = 8;
1024 var->blue.length = 8;
1025 }
1026 }
1027
1028 static int __devinit
1029 intelfb_init_var(struct intelfb_info *dinfo)
1030 {
1031 struct fb_var_screeninfo *var;
1032 int msrc = 0;
1033
1034 DBG_MSG("intelfb_init_var\n");
1035
1036 var = &dinfo->info->var;
1037 if (FIXED_MODE(dinfo)) {
1038 memcpy(var, &dinfo->initial_var,
1039 sizeof(struct fb_var_screeninfo));
1040 msrc = 5;
1041 } else {
1042 if (mode) {
1043 msrc = fb_find_mode(var, dinfo->info, mode,
1044 vesa_modes, VESA_MODEDB_SIZE,
1045 NULL, 0);
1046 if (msrc)
1047 msrc |= 8;
1048 }
1049 if (!msrc) {
1050 msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1051 vesa_modes, VESA_MODEDB_SIZE,
1052 NULL, 0);
1053 }
1054 }
1055
1056 if (!msrc) {
1057 ERR_MSG("Cannot find a suitable video mode.\n");
1058 return 1;
1059 }
1060
1061 INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1062 var->bits_per_pixel, var_to_refresh(var));
1063
1064 DBG_MSG("Initial video mode is from %d.\n", msrc);
1065
1066 #if ALLOCATE_FOR_PANNING
1067 /* Allow use of half of the video ram for panning */
1068 var->xres_virtual = var->xres;
1069 var->yres_virtual =
1070 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1071 if (var->yres_virtual < var->yres)
1072 var->yres_virtual = var->yres;
1073 #else
1074 var->yres_virtual = var->yres;
1075 #endif
1076
1077 if (dinfo->accel)
1078 var->accel_flags |= FB_ACCELF_TEXT;
1079 else
1080 var->accel_flags &= ~FB_ACCELF_TEXT;
1081
1082 return 0;
1083 }
1084
1085 static int __devinit
1086 intelfb_set_fbinfo(struct intelfb_info *dinfo)
1087 {
1088 struct fb_info *info = dinfo->info;
1089
1090 DBG_MSG("intelfb_set_fbinfo\n");
1091
1092 info->flags = FBINFO_FLAG_DEFAULT;
1093 info->fbops = &intel_fb_ops;
1094 info->pseudo_palette = dinfo->pseudo_palette;
1095
1096 info->pixmap.size = 64*1024;
1097 info->pixmap.buf_align = 8;
1098 info->pixmap.access_align = 32;
1099 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1100
1101 if (intelfb_init_var(dinfo))
1102 return 1;
1103
1104 info->pixmap.scan_align = 1;
1105
1106 update_dinfo(dinfo, &info->var);
1107
1108 return 0;
1109 }
1110
1111 /* Update dinfo to match the active video mode. */
1112 static void
1113 update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var)
1114 {
1115 DBG_MSG("update_dinfo\n");
1116
1117 dinfo->bpp = var->bits_per_pixel;
1118 dinfo->depth = intelfb_var_to_depth(var);
1119 dinfo->xres = var->xres;
1120 dinfo->yres = var->xres;
1121 dinfo->pixclock = var->pixclock;
1122
1123 intelfb_get_fix(&dinfo->info->fix, dinfo->info);
1124
1125 switch (dinfo->bpp) {
1126 case 8:
1127 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1128 dinfo->pitch = var->xres_virtual;
1129 break;
1130 case 16:
1131 dinfo->visual = FB_VISUAL_TRUECOLOR;
1132 dinfo->pitch = var->xres_virtual * 2;
1133 break;
1134 case 32:
1135 dinfo->visual = FB_VISUAL_TRUECOLOR;
1136 dinfo->pitch = var->xres_virtual * 4;
1137 break;
1138 }
1139
1140 /* Make sure the line length is a aligned correctly. */
1141 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1142
1143 if (FIXED_MODE(dinfo))
1144 dinfo->pitch = dinfo->initial_pitch;
1145
1146 dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1147 dinfo->info->fix.line_length = dinfo->pitch;
1148 dinfo->info->fix.visual = dinfo->visual;
1149 }
1150
1151 /* fbops functions */
1152
1153 static int
1154 intelfb_get_fix(struct fb_fix_screeninfo *fix, struct fb_info *info)
1155 {
1156 struct intelfb_info *dinfo = GET_DINFO(info);
1157
1158 DBG_MSG("intelfb_get_fix\n");
1159
1160 memset(fix, 0, sizeof(*fix));
1161 strcpy(fix->id, dinfo->name);
1162 fix->smem_start = dinfo->fb.physical;
1163 fix->smem_len = dinfo->fb.size;
1164 fix->type = FB_TYPE_PACKED_PIXELS;
1165 fix->type_aux = 0;
1166 fix->visual = dinfo->visual;
1167 fix->xpanstep = 8;
1168 fix->ypanstep = 1;
1169 fix->ywrapstep = 0;
1170 fix->line_length = dinfo->pitch;
1171 fix->mmio_start = dinfo->mmio_base_phys;
1172 fix->mmio_len = INTEL_REG_SIZE;
1173 fix->accel = FB_ACCEL_I830;
1174 return 0;
1175 }
1176
1177 /***************************************************************
1178 * fbdev interface *
1179 ***************************************************************/
1180
1181 static int
1182 intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1183 {
1184 int change_var = 0;
1185 struct fb_var_screeninfo v;
1186 struct intelfb_info *dinfo;
1187 static int first = 1;
1188
1189 DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1190
1191 dinfo = GET_DINFO(info);
1192
1193 if (intelfbhw_validate_mode(dinfo, var) != 0)
1194 return -EINVAL;
1195
1196 v = *var;
1197
1198 /* Check for a supported bpp. */
1199 if (v.bits_per_pixel <= 8) {
1200 v.bits_per_pixel = 8;
1201 } else if (v.bits_per_pixel <= 16) {
1202 if (v.bits_per_pixel == 16)
1203 v.green.length = 6;
1204 v.bits_per_pixel = 16;
1205 } else if (v.bits_per_pixel <= 32) {
1206 v.bits_per_pixel = 32;
1207 } else
1208 return -EINVAL;
1209
1210 change_var = ((info->var.xres != var->xres) ||
1211 (info->var.yres != var->yres) ||
1212 (info->var.xres_virtual != var->xres_virtual) ||
1213 (info->var.yres_virtual != var->yres_virtual) ||
1214 (info->var.bits_per_pixel != var->bits_per_pixel) ||
1215 memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1216 memcmp(&info->var.green, &var->green,
1217 sizeof(var->green)) ||
1218 memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1219
1220 if (FIXED_MODE(dinfo) &&
1221 (change_var ||
1222 var->yres_virtual > dinfo->initial_var.yres_virtual ||
1223 var->yres_virtual < dinfo->initial_var.yres ||
1224 var->xoffset || var->nonstd)) {
1225 if (first) {
1226 ERR_MSG("Changing the video mode is not supported.\n");
1227 first = 0;
1228 }
1229 return -EINVAL;
1230 }
1231
1232 switch (intelfb_var_to_depth(&v)) {
1233 case 8:
1234 v.red.offset = v.green.offset = v.blue.offset = 0;
1235 v.red.length = v.green.length = v.blue.length = 8;
1236 v.transp.offset = v.transp.length = 0;
1237 break;
1238 case 15:
1239 v.red.offset = 10;
1240 v.green.offset = 5;
1241 v.blue.offset = 0;
1242 v.red.length = v.green.length = v.blue.length = 5;
1243 v.transp.offset = v.transp.length = 0;
1244 break;
1245 case 16:
1246 v.red.offset = 11;
1247 v.green.offset = 5;
1248 v.blue.offset = 0;
1249 v.red.length = 5;
1250 v.green.length = 6;
1251 v.blue.length = 5;
1252 v.transp.offset = v.transp.length = 0;
1253 break;
1254 case 24:
1255 v.red.offset = 16;
1256 v.green.offset = 8;
1257 v.blue.offset = 0;
1258 v.red.length = v.green.length = v.blue.length = 8;
1259 v.transp.offset = v.transp.length = 0;
1260 break;
1261 case 32:
1262 v.red.offset = 16;
1263 v.green.offset = 8;
1264 v.blue.offset = 0;
1265 v.red.length = v.green.length = v.blue.length = 8;
1266 v.transp.offset = 24;
1267 v.transp.length = 8;
1268 break;
1269 }
1270
1271 if (v.xoffset < 0)
1272 v.xoffset = 0;
1273 if (v.yoffset < 0)
1274 v.yoffset = 0;
1275
1276 if (v.xoffset > v.xres_virtual - v.xres)
1277 v.xoffset = v.xres_virtual - v.xres;
1278 if (v.yoffset > v.yres_virtual - v.yres)
1279 v.yoffset = v.yres_virtual - v.yres;
1280
1281 v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1282 v.transp.msb_right = 0;
1283
1284 *var = v;
1285
1286 return 0;
1287 }
1288
1289 static int
1290 intelfb_set_par(struct fb_info *info)
1291 {
1292 struct intelfb_hwstate *hw;
1293 struct intelfb_info *dinfo = GET_DINFO(info);
1294
1295 if (FIXED_MODE(dinfo)) {
1296 ERR_MSG("Changing the video mode is not supported.\n");
1297 return -EINVAL;
1298 }
1299
1300 hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1301 if (!hw)
1302 return -ENOMEM;
1303
1304 DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1305 info->var.yres, info->var.bits_per_pixel);
1306
1307 intelfb_blank(FB_BLANK_POWERDOWN, info);
1308
1309 if (ACCEL(dinfo, info))
1310 intelfbhw_2d_stop(dinfo);
1311
1312 memcpy(hw, &dinfo->save_state, sizeof(*hw));
1313 if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1314 goto invalid_mode;
1315 if (intelfbhw_program_mode(dinfo, hw, 0))
1316 goto invalid_mode;
1317
1318 #if REGDUMP > 0
1319 intelfbhw_read_hw_state(dinfo, hw, 0);
1320 intelfbhw_print_hw_state(dinfo, hw);
1321 #endif
1322
1323 update_dinfo(dinfo, &info->var);
1324
1325 if (ACCEL(dinfo, info))
1326 intelfbhw_2d_start(dinfo);
1327
1328 intelfb_pan_display(&info->var, info);
1329
1330 intelfb_blank(FB_BLANK_UNBLANK, info);
1331
1332 if (ACCEL(dinfo, info)) {
1333 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1334 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1335 FBINFO_HWACCEL_IMAGEBLIT;
1336 } else {
1337 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1338 }
1339 kfree(hw);
1340 return 0;
1341 invalid_mode:
1342 kfree(hw);
1343 return -EINVAL;
1344 }
1345
1346 static int
1347 intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1348 unsigned blue, unsigned transp, struct fb_info *info)
1349 {
1350 struct intelfb_info *dinfo = GET_DINFO(info);
1351
1352 #if VERBOSE > 0
1353 DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1354 #endif
1355
1356 if (regno > 255)
1357 return 1;
1358
1359 switch (dinfo->depth) {
1360 case 8:
1361 {
1362 red >>= 8;
1363 green >>= 8;
1364 blue >>= 8;
1365
1366 dinfo->palette[regno].red = red;
1367 dinfo->palette[regno].green = green;
1368 dinfo->palette[regno].blue = blue;
1369
1370 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1371 transp);
1372 }
1373 break;
1374 case 15:
1375 dinfo->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
1376 ((green & 0xf800) >> 6) |
1377 ((blue & 0xf800) >> 11);
1378 break;
1379 case 16:
1380 dinfo->pseudo_palette[regno] = (red & 0xf800) |
1381 ((green & 0xfc00) >> 5) |
1382 ((blue & 0xf800) >> 11);
1383 break;
1384 case 24:
1385 dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1386 (green & 0xff00) |
1387 ((blue & 0xff00) >> 8);
1388 break;
1389 }
1390 return 0;
1391 }
1392
1393 static int
1394 intelfb_blank(int blank, struct fb_info *info)
1395 {
1396 intelfbhw_do_blank(blank, info);
1397 return 0;
1398 }
1399
1400 static int
1401 intelfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1402 {
1403 intelfbhw_pan_display(var, info);
1404 return 0;
1405 }
1406
1407 /* When/if we have our own ioctls. */
1408 static int
1409 intelfb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
1410 unsigned long arg, struct fb_info *info)
1411 {
1412 int retval = 0;
1413
1414 return retval;
1415 }
1416
1417 static void
1418 intelfb_fillrect (struct fb_info *info, const struct fb_fillrect *rect)
1419 {
1420 struct intelfb_info *dinfo = GET_DINFO(info);
1421 u32 rop, color;
1422
1423 #if VERBOSE > 0
1424 DBG_MSG("intelfb_fillrect\n");
1425 #endif
1426
1427 if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1428 return cfb_fillrect(info, rect);
1429
1430 if (rect->rop == ROP_COPY)
1431 rop = PAT_ROP_GXCOPY;
1432 else // ROP_XOR
1433 rop = PAT_ROP_GXXOR;
1434
1435 if (dinfo->depth != 8)
1436 color = dinfo->pseudo_palette[rect->color];
1437 else
1438 color = rect->color;
1439
1440 intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1441 rect->width, rect->height, color,
1442 dinfo->pitch, info->var.bits_per_pixel,
1443 rop);
1444 }
1445
1446 static void
1447 intelfb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
1448 {
1449 struct intelfb_info *dinfo = GET_DINFO(info);
1450
1451 #if VERBOSE > 0
1452 DBG_MSG("intelfb_copyarea\n");
1453 #endif
1454
1455 if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1456 return cfb_copyarea(info, region);
1457
1458 intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1459 region->dy, region->width, region->height,
1460 dinfo->pitch, info->var.bits_per_pixel);
1461 }
1462
1463 static void
1464 intelfb_imageblit(struct fb_info *info, const struct fb_image *image)
1465 {
1466 struct intelfb_info *dinfo = GET_DINFO(info);
1467 u32 fgcolor, bgcolor;
1468
1469 #if VERBOSE > 0
1470 DBG_MSG("intelfb_imageblit\n");
1471 #endif
1472
1473 if (!ACCEL(dinfo, info) || dinfo->depth == 4
1474 || image->depth != 1)
1475 return cfb_imageblit(info, image);
1476
1477 if (dinfo->depth != 8) {
1478 fgcolor = dinfo->pseudo_palette[image->fg_color];
1479 bgcolor = dinfo->pseudo_palette[image->bg_color];
1480 } else {
1481 fgcolor = image->fg_color;
1482 bgcolor = image->bg_color;
1483 }
1484
1485 if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1486 image->height, image->data,
1487 image->dx, image->dy,
1488 dinfo->pitch, info->var.bits_per_pixel))
1489 return cfb_imageblit(info, image);
1490 }
1491
1492 static int
1493 intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1494 {
1495 struct intelfb_info *dinfo = GET_DINFO(info);
1496
1497 #if VERBOSE > 0
1498 DBG_MSG("intelfb_cursor\n");
1499 #endif
1500
1501 if (!dinfo->hwcursor)
1502 return soft_cursor(info, cursor);
1503
1504 intelfbhw_cursor_hide(dinfo);
1505
1506 /* If XFree killed the cursor - restore it */
1507 if (INREG(CURSOR_A_BASEADDR) != dinfo->cursor.offset << 12) {
1508 u32 fg, bg;
1509
1510 DBG_MSG("the cursor was killed - restore it !!\n");
1511 DBG_MSG("size %d, %d pos %d, %d\n",
1512 cursor->image.width, cursor->image.height,
1513 cursor->image.dx, cursor->image.dy);
1514
1515 intelfbhw_cursor_init(dinfo);
1516 intelfbhw_cursor_reset(dinfo);
1517 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1518 cursor->image.dy);
1519
1520 if (dinfo->depth != 8) {
1521 fg =dinfo->pseudo_palette[cursor->image.fg_color];
1522 bg =dinfo->pseudo_palette[cursor->image.bg_color];
1523 } else {
1524 fg = cursor->image.fg_color;
1525 bg = cursor->image.bg_color;
1526 }
1527 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1528 intelfbhw_cursor_load(dinfo, cursor->image.width,
1529 cursor->image.height,
1530 dinfo->cursor_src);
1531
1532 if (cursor->enable)
1533 intelfbhw_cursor_show(dinfo);
1534 return 0;
1535 }
1536
1537 if (cursor->set & FB_CUR_SETPOS) {
1538 u32 dx, dy;
1539
1540 dx = cursor->image.dx - info->var.xoffset;
1541 dy = cursor->image.dy - info->var.yoffset;
1542
1543 intelfbhw_cursor_setpos(dinfo, dx, dy);
1544 }
1545
1546 if (cursor->set & FB_CUR_SETSIZE) {
1547 if (cursor->image.width > 64 || cursor->image.height > 64)
1548 return -ENXIO;
1549
1550 intelfbhw_cursor_reset(dinfo);
1551 }
1552
1553 if (cursor->set & FB_CUR_SETCMAP) {
1554 u32 fg, bg;
1555
1556 if (dinfo->depth != 8) {
1557 fg = dinfo->pseudo_palette[cursor->image.fg_color];
1558 bg = dinfo->pseudo_palette[cursor->image.bg_color];
1559 } else {
1560 fg = cursor->image.fg_color;
1561 bg = cursor->image.bg_color;
1562 }
1563
1564 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1565 }
1566
1567 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1568 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1569 u32 size = s_pitch * cursor->image.height;
1570 u8 *dat = (u8 *) cursor->image.data;
1571 u8 *msk = (u8 *) cursor->mask;
1572 u8 src[64];
1573 u32 i;
1574
1575 if (cursor->image.depth != 1)
1576 return -ENXIO;
1577
1578 switch (cursor->rop) {
1579 case ROP_XOR:
1580 for (i = 0; i < size; i++)
1581 src[i] = dat[i] ^ msk[i];
1582 break;
1583 case ROP_COPY:
1584 default:
1585 for (i = 0; i < size; i++)
1586 src[i] = dat[i] & msk[i];
1587 break;
1588 }
1589
1590 /* save the bitmap to restore it when XFree will
1591 make the cursor dirty */
1592 memcpy(dinfo->cursor_src, src, size);
1593
1594 intelfbhw_cursor_load(dinfo, cursor->image.width,
1595 cursor->image.height, src);
1596 }
1597
1598 if (cursor->enable)
1599 intelfbhw_cursor_show(dinfo);
1600
1601 return 0;
1602 }
1603
1604 static int
1605 intelfb_sync(struct fb_info *info)
1606 {
1607 struct intelfb_info *dinfo = GET_DINFO(info);
1608
1609 #if VERBOSE > 0
1610 DBG_MSG("intelfb_sync\n");
1611 #endif
1612
1613 if (dinfo->ring_lockup)
1614 return 0;
1615
1616 intelfbhw_do_sync(dinfo);
1617 return 0;
1618 }
1619
Linux kernel - Deliverables
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