1 /*
2 * intelfb
3 *
4 * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G
5 * integrated graphics chips.
6 *
7 * Copyright (C) 2002, 2003 David Dawes <dawes@tungstengraphics.com>
8 *
9 * This driver consists of two parts. The first part (intelfbdrv.c) provides
10 * the basic fbdev interfaces, is derived in part from the radeonfb and
11 * vesafb drivers, and is covered by the GPL. The second part (intelfbhw.c)
12 * provides the code to program the hardware. Most of it is derived from
13 * the i810/i830 XFree86 driver. The HW-specific code is covered here
14 * under a dual license (GPL and MIT/XFree86 license).
15 *
16 * Author: David Dawes
17 *
18 */
19
20 /* $DHD: intelfb/intelfbdrv.c,v 1.15 2003/02/06 17:50:08 dawes Exp $ */
21 /* $TG$ */
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 * TODO:
81 * -
82 *
83 * Wish List:
84 * - Check clock limits for 845G and 830M.
85 * - Test on SMP config.
86 * - Check if any functions/data should be __devinit, etc.
87 * - See if it's feasible to get/use DDC/EDID info.
88 * - MTRR support.
89 * - See if module unloading can work.
90 * - See if driver works built-in to 2.5.32 kernel.
91 * - Check acceleration problems on 830M-855GM.
92 * - Add gtf support so that arbitrary modes can be calculated.
93 * - Port driver to latest 2.5.x fbdev interface.
94 */
95
96 #include <linux/config.h>
97 #include <linux/module.h>
98 #include <linux/kernel.h>
99 #include <linux/errno.h>
100 #include <linux/string.h>
101 #include <linux/mm.h>
102 #include <linux/tty.h>
103 #include <linux/slab.h>
104 #include <linux/delay.h>
105 #include <linux/fb.h>
106 #include <linux/console.h>
107 #include <linux/selection.h>
108 #include <linux/ioport.h>
109 #include <linux/init.h>
110 #include <linux/pci.h>
111 #include <linux/vmalloc.h>
112 #include <linux/kd.h>
113 #include <linux/vt_kern.h>
114 #include <linux/pagemap.h>
115 #include <linux/version.h>
116
117 #include <asm/io.h>
118
119 #include <video/fbcon.h>
120 #include <video/fbcon-cfb8.h>
121 #include <video/fbcon-cfb16.h>
122 #include <video/fbcon-cfb32.h>
123
124 #include "intelfb.h"
125
126 #include "builtinmodes.c"
127
128 /*
129 * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
130 * mobile chipsets from being registered.
131 */
132 #if DETECT_VGA_CLASS_ONLY
133 #define INTELFB_CLASS_MASK ~0 << 8
134 #else
135 #define INTELFB_CLASS_MASK 0
136 #endif
137
138 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
139 { 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 },
140 { 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 },
141 { 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 },
142 { 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 },
143 { 0, }
144 };
145
146 /* Global data */
147 static int num_registered = 0;
148
149
150 /* Forward declarations */
151 static int intelfb_get_fix(struct fb_fix_screeninfo *fix, int con,
152 struct fb_info *info);
153 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
154 static int intelfb_get_var(struct fb_var_screeninfo *var, int con,
155 struct fb_info *info);
156 #endif
157 static int intelfb_set_var(struct fb_var_screeninfo *var, int con,
158 struct fb_info *info);
159 static int intelfb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
160 struct fb_info *info);
161 static int intelfb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
162 struct fb_info *info);
163 static int intelfb_ioctl(struct inode *inode, struct file *file,
164 unsigned int cmd, unsigned long arg, int con,
165 struct fb_info *info);
166 static int intelfb_switch(int con, struct fb_info *info);
167 static int intelfb_updatevar(int con, struct fb_info *info);
168 static int intelfb_blank(int blank, struct fb_info *info);
169 static int intelfb_getcolreg(unsigned regno, unsigned *red, unsigned *green,
170 unsigned *blue, unsigned *transp,
171 struct fb_info *info);
172 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
173 unsigned blue, unsigned transp,
174 struct fb_info *info);
175 static int intelfb_pci_register(struct pci_dev *pdev,
176 const struct pci_device_id *ent);
177 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
178 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
179 static void intelfb_set_dispsw(struct intelfb_info *dinfo,
180 struct display *disp);
181 static void mode_to_var(const struct fb_videomode *mode,
182 struct fb_var_screeninfo *var, u32 bpp);
183 static int intelfb_set_mode(struct intelfb_info *dinfo,
184 struct fb_var_screeninfo *var,
185 struct display *disp, int blank);
186 static void intelfb_do_install_cmap(int con, struct fb_info *info);
187 static void update_dinfo(struct intelfb_info *dinfo,
188 struct fb_var_screeninfo *var, struct display *disp);
189 static void intelfb_flashcursor(unsigned long ptr);
190 static void fbcon_intelfb_setup(struct display *p);
191 static void fbcon_intelfb_bmove(struct display *p, int sy, int sx, int dy,
192 int dx, int height, int width);
193 static void fbcon_intelfb_clear(struct vc_data *conp, struct display *p,
194 int sy, int sx, int height, int width);
195 static void fbcon_intelfb_putc(struct vc_data *conp, struct display *p,
196 int c, int yy, int xx);
197 static void fbcon_intelfb_putcs(struct vc_data *conp, struct display *p,
198 const unsigned short *s, int count,
199 int yy, int xx);
200 static void fbcon_intelfb_revc(struct display *p, int xx, int yy);
201 static void fbcon_intelfb_clear_margins(struct vc_data *conp,
202 struct display *p, int bottom_only);
203 static void fbcon_intelfb_cursor(struct display *disp, int mode, int x, int y);
204
205 /* fb ops */
206 static struct fb_ops intel_fb_ops = {
207 .owner = THIS_MODULE,
208 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
209 .fb_get_fix = intelfb_get_fix,
210 .fb_get_var = intelfb_get_var,
211 #else
212 .fb_blank = intelfb_blank,
213 .fb_setcolreg = intelfb_setcolreg,
214 #endif
215 .fb_set_var = intelfb_set_var,
216 .fb_get_cmap = intelfb_get_cmap,
217 .fb_set_cmap = intelfb_set_cmap,
218 .fb_pan_display = intelfbhw_pan_display,
219 .fb_ioctl = intelfb_ioctl
220 };
221
222 /* PCI driver module table */
223 static struct pci_driver intelfb_driver = {
224 .name = INTELFB_MODULE_NAME,
225 .id_table = intelfb_pci_table,
226 .probe = intelfb_pci_register,
227 .remove = __devexit_p(intelfb_pci_unregister)
228 };
229
230 /* fbcon acceleration */
231 static struct display_switch fbcon_intelfb = {
232 .setup = fbcon_intelfb_setup,
233 .bmove = fbcon_intelfb_bmove,
234 .clear = fbcon_intelfb_clear,
235 .putc = fbcon_intelfb_putc,
236 .putcs = fbcon_intelfb_putcs,
237 .revc = fbcon_intelfb_revc,
238 .cursor = fbcon_intelfb_cursor,
239 .clear_margins = fbcon_intelfb_clear_margins,
240 .fontwidthmask = FONTWIDTHRANGE(4, 16)
241 };
242
243 /* Module description/parameters */
244 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>");
245 MODULE_DESCRIPTION(
246 "Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS " chipsets");
247 MODULE_LICENSE("Dual BSD/GPL");
248 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
249
250 INTELFB_INT_PARAM(accel, 1, "Enable console acceleration");
251 INTELFB_INT_PARAM(hwcursor, 1, "Enable HW cursor");
252 INTELFB_INT_PARAM(fixed, 0, "Disable mode switching");
253 INTELFB_INT_PARAM(noinit, 0, "Don't initialise graphics mode when loading");
254 INTELFB_INT_PARAM(noregister, 0, "Don't register, just probe and exit (debug)");
255 INTELFB_INT_PARAM(probeonly, 0, "Do a minimal probe (debug)");
256 INTELFB_INT_PARAM(idonly, 0,
257 "Just identify without doing anything else (debug)");
258 INTELFB_INT_PARAM(bailearly, 0, "Bail out early, depending on value (debug)");
259 INTELFB_STR_PARAM(mode, NULL,
260 "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
261 INTELFB_STR_PARAM(font, NULL, "Specify which built-in font to use");
262
263
264 /* module load/unload entry points */
265 int __init
intelfb_init(void)266 intelfb_init(void)
267 {
268 DBG_MSG("intelfb_init\n");
269
270 INF_MSG("Framebuffer driver for "
271 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
272 INF_MSG("Version " INTELFB_VERSION
273 ", written by David Dawes <dawes@tungstengraphics.com>\n");
274
275 if (idonly)
276 return -ENODEV;
277
278 return pci_module_init(&intelfb_driver);
279 }
280
281 void __exit
intelfb_exit(void)282 intelfb_exit(void)
283 {
284 DBG_MSG("intelfb_exit\n");
285 pci_unregister_driver(&intelfb_driver);
286 }
287
288 #ifndef MODULE
289 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
290 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name), NULL, 0)
291 #define OPT_STRVAL(opt, name) (opt + strlen(name))
292
293 static __inline__ char *
get_opt_string(const char * this_opt,const char * name)294 get_opt_string(const char *this_opt, const char *name)
295 {
296 const char *p;
297 int i;
298 char *ret;
299
300 p = OPT_STRVAL(this_opt, name);
301 i = 0;
302 while (p[i] && p[i] != ' ' && p[i] != ',')
303 i++;
304 ret = kmalloc(i + 1, GFP_KERNEL);
305 if (ret) {
306 strncpy(ret, p, i);
307 ret[i] = '\0';
308 }
309 return ret;
310 }
311
312 static __inline__ int
get_opt_bool(const char * this_opt,const char * name,int * ret)313 get_opt_bool(const char *this_opt, const char *name, int *ret)
314 {
315 if (!ret)
316 return 0;
317
318 if (OPT_EQUAL(this_opt, name)) {
319 if (this_opt[strlen(name)] == '=')
320 *ret = simple_strtoul(this_opt + strlen(name) + 1,
321 NULL, 0);
322 else
323 *ret = 1;
324 } else {
325 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
326 *ret = 0;
327 else
328 return 0;
329 }
330 return 1;
331 }
332
333 int __init
intelfb_setup(char * options)334 intelfb_setup(char *options)
335 {
336 char *this_opt;
337
338 DBG_MSG("intelfb_setup\n");
339
340 if (!options || !*options) {
341 DBG_MSG("no options\n");
342 return 0;
343 } else
344 DBG_MSG("options: %s\n", options);
345
346 /*
347 * These are the built-in options analogous to the module parameters
348 * defined above.
349 *
350 * The syntax is:
351 *
352 * video=intelfb:[mode][,<param>=<val>] ...
353 *
354 * e.g.,
355 *
356 * video=intelfb:1024x768-16@75,accel=0
357 */
358
359 while ((this_opt = strsep(&options, ","))) {
360 if (!*this_opt)
361 continue;
362 if (get_opt_bool(this_opt, "accel", &accel))
363 ;
364 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
365 ;
366 else if (get_opt_bool(this_opt, "fixed", &fixed))
367 ;
368 else if (get_opt_bool(this_opt, "init", &noinit))
369 noinit = !noinit;
370 else if (OPT_EQUAL(this_opt, "font="))
371 font = get_opt_string(this_opt, "font=");
372 else if (OPT_EQUAL(this_opt, "mode="))
373 mode = get_opt_string(this_opt, "mode=");
374 else
375 mode = this_opt;
376 }
377
378 return 0;
379 }
380 #endif
381
382 #ifdef MODULE
383 module_init(intelfb_init);
384 module_exit(intelfb_exit);
385 #endif
386
387 static void
cleanup(struct intelfb_info * dinfo)388 cleanup(struct intelfb_info *dinfo)
389 {
390 DBG_MSG("cleanup\n");
391
392 if (!dinfo)
393 return;
394
395 if (dinfo->registered)
396 unregister_framebuffer(&(dinfo->info));
397
398 if (&dinfo->cursor.timer)
399 del_timer_sync(&dinfo->cursor.timer);
400
401 #if USE_SYNC_PAGE
402 if (dinfo->syncpage_virt) {
403 struct page *pg = virt_to_page((void *)dinfo->syncpage_virt);
404 if (pg) {
405 put_page(pg);
406 UnlockPage(pg);
407 free_page(dinfo->syncpage_virt);
408 }
409 }
410 #endif
411
412 if (dinfo->cursor_base)
413 iounmap((void *)dinfo->cursor_base);
414 if (dinfo->ring_base)
415 iounmap((void *)dinfo->ring_base);
416 if (dinfo->fb_base)
417 iounmap((void *)dinfo->fb_base);
418 if (dinfo->mmio_base)
419 iounmap((void *)dinfo->mmio_base);
420 if (dinfo->mmio_base_phys && dinfo->pdev)
421 release_mem_region(dinfo->mmio_base_phys,
422 pci_resource_len(dinfo->pdev, 1));
423 if (dinfo->fb_base_phys && dinfo->pdev)
424 release_mem_region(dinfo->fb_base_phys,
425 pci_resource_len(dinfo->pdev, 0));
426 kfree(dinfo);
427 }
428
429 #define bailout(dinfo) do { \
430 DBG_MSG("bailout\n"); \
431 cleanup(dinfo); \
432 INF_MSG("Not going to register framebuffer, exiting...\n"); \
433 return -ENODEV; \
434 } while (0)
435
436
437 int
intelfb_var_to_depth(const struct fb_var_screeninfo * var)438 intelfb_var_to_depth(const struct fb_var_screeninfo *var)
439 {
440 #if 0
441 DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
442 var->bits_per_pixel, var->green.length);
443 #endif
444
445 switch (var->bits_per_pixel) {
446 case 16:
447 return (var->green.length == 6) ? 16 : 15;
448 case 32:
449 return 24;
450 default:
451 return var->bits_per_pixel;
452 }
453 }
454
455 static void
get_initial_mode(struct intelfb_info * dinfo)456 get_initial_mode(struct intelfb_info *dinfo)
457 {
458 struct fb_var_screeninfo *var;
459 int xtot, ytot;
460
461 DBG_MSG("get_initial_mode\n");
462
463 dinfo->initial_vga = 1;
464 dinfo->initial_fb_base = screen_info.lfb_base;
465 dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
466 dinfo->initial_pitch = screen_info.lfb_linelength;
467
468 var = &dinfo->initial_var;
469 memset(var, 0, sizeof(*var));
470 var->xres = screen_info.lfb_width;
471 var->yres = screen_info.lfb_height;
472 var->xres_virtual = var->xres;
473 #if ALLOCATE_FOR_PANNING
474 /* Allow use of half of the video ram for panning */
475 var->yres_virtual =
476 dinfo->initial_video_ram / 2 / dinfo->initial_pitch;
477 if (var->yres_virtual < var->yres)
478 var->yres_virtual = var->yres;
479 #else
480 var->yres_virtual = var->yres;
481 #endif
482 var->bits_per_pixel = screen_info.lfb_depth;
483 switch (screen_info.lfb_depth) {
484 case 15:
485 var->bits_per_pixel = 16;
486 break;
487 case 24:
488 var->bits_per_pixel = 32;
489 break;
490 }
491
492 DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
493 dinfo->initial_fb_base, dinfo->initial_video_ram,
494 BtoKB(dinfo->initial_video_ram));
495
496 DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
497 var->xres, var->yres, var->bits_per_pixel,
498 dinfo->initial_pitch);
499
500 /* Dummy timing values (assume 60Hz) */
501 var->left_margin = (var->xres / 8) & 0xf8;
502 var->right_margin = 32;
503 var->upper_margin = 16;
504 var->lower_margin = 4;
505 var->hsync_len = (var->xres / 8) & 0xf8;
506 var->vsync_len = 4;
507
508 xtot = var->xres + var->left_margin +
509 var->right_margin + var->hsync_len;
510 ytot = var->yres + var->upper_margin +
511 var->lower_margin + var->vsync_len;
512 var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
513
514 var->height = -1;
515 var->width = -1;
516
517 if (var->bits_per_pixel > 8) {
518 var->red.offset = screen_info.red_pos;
519 var->red.length = screen_info.red_size;
520 var->green.offset = screen_info.green_pos;
521 var->green.length = screen_info.green_size;
522 var->blue.offset = screen_info.blue_pos;
523 var->blue.length = screen_info.blue_size;
524 var->transp.offset = screen_info.rsvd_pos;
525 var->transp.length = screen_info.rsvd_size;
526 } else {
527 var->red.length = 8;
528 var->green.length = 8;
529 var->blue.length = 8;
530 }
531 }
532
533 static int
intelfb_pci_register(struct pci_dev * pdev,const struct pci_device_id * ent)534 intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
535 {
536 struct intelfb_info *dinfo;
537 int i, j, err;
538 const char *s;
539
540 DBG_MSG("intelfb_pci_register\n");
541
542 num_registered++;
543 if (num_registered != 1) {
544 ERR_MSG("Attempted to register %d devices "
545 "(should be only 1).\n", num_registered);
546 return -ENODEV;
547 }
548
549 if (!(dinfo = kmalloc(sizeof(struct intelfb_info), GFP_KERNEL))) {
550 ERR_MSG("Could not allocate memory for intelfb_info.\n");
551 return -ENODEV;
552 }
553
554 memset(dinfo, 0, sizeof(*dinfo));
555 dinfo->pdev = pdev;
556
557 /* Enable device. */
558 if ((err = pci_enable_device(pdev))) {
559 ERR_MSG("Cannot enable device.\n");
560 cleanup(dinfo);
561 return -ENODEV;
562 }
563
564 /* Set base addresses. */
565 dinfo->fb_base_phys = pci_resource_start(pdev, 0);
566 dinfo->mmio_base_phys = pci_resource_start(pdev, 1);
567
568 DBG_MSG("fb region: 0x%lx/0x%lx, MMIO region: 0x%lx/0x%lx\n",
569 pci_resource_start(pdev, 0), pci_resource_len(pdev, 0),
570 pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
571
572 /* Reserve the fb and MMIO regions */
573 if (!request_mem_region(dinfo->fb_base_phys, pci_resource_len(pdev, 0),
574 INTELFB_MODULE_NAME)) {
575 ERR_MSG("Cannot reserve FB region.\n");
576 cleanup(dinfo);
577 return -ENODEV;
578 }
579 if (!request_mem_region(dinfo->mmio_base_phys,
580 pci_resource_len(pdev, 1),
581 INTELFB_MODULE_NAME)) {
582 ERR_MSG("Cannot reserve MMIO region.\n");
583 cleanup(dinfo);
584 return -ENODEV;
585 }
586
587 /* Map the MMIO region. */
588 dinfo->mmio_base = (u32)ioremap(dinfo->mmio_base_phys, INTEL_REG_SIZE);
589 if (!dinfo->mmio_base) {
590 ERR_MSG("Cannot map MMIO.\n");
591 cleanup(dinfo);
592 return -ENODEV;
593 }
594
595 /* Get the chipset info. */
596 dinfo->pci_chipset = pdev->device;
597
598 if (intelfbhw_get_chipset(pdev, &dinfo->name, &dinfo->chipset,
599 &dinfo->mobile)) {
600 cleanup(dinfo);
601 return -ENODEV;
602 }
603
604 if (intelfbhw_get_memory(pdev, &dinfo->aperture_size,
605 &dinfo->stolen_size)) {
606 cleanup(dinfo);
607 return -ENODEV;
608 }
609
610 INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
611 "stolen memory %dkB\n",
612 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
613 dinfo->name, BtoMB(dinfo->aperture_size),
614 BtoKB(dinfo->stolen_size));
615
616 /* Set these from the options. */
617 dinfo->accel = accel;
618 dinfo->hwcursor = hwcursor;
619
620 if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
621 INF_MSG("Acceleration is not supported for the %s chipset.\n",
622 dinfo->name);
623 dinfo->accel = 0;
624 }
625
626 /*
627 * For now, set the video ram size to the stolen size rounded
628 * down to a page multiple. This means the agpgart driver doesn't
629 * need to get involved.
630 */
631 dinfo->video_ram = ROUND_DOWN_TO_PAGE(dinfo->stolen_size);
632
633 /* Allocate space for the ring buffer and HW cursor. */
634 if (dinfo->accel) {
635 dinfo->ring_size = RINGBUFFER_SIZE;
636 dinfo->video_ram -= dinfo->ring_size;
637 dinfo->ring_base_phys = dinfo->fb_base_phys + dinfo->video_ram;
638 dinfo->ring_tail_mask = dinfo->ring_size - 1;
639 }
640 if (dinfo->hwcursor && !dinfo->mobile) {
641 dinfo->cursor_size = HW_CURSOR_SIZE;
642 dinfo->video_ram -= dinfo->cursor_size;
643 dinfo->cursor_offset = dinfo->video_ram;
644 dinfo->cursor_base_phys = dinfo->fb_base_phys +
645 dinfo->cursor_offset;
646 }
647
648 /* Framebuffer starts at offset 0. */
649 dinfo->fb_offset = 0;
650 dinfo->video_ram -= dinfo->fb_offset;
651
652 /* Map the FB region. Only map the memory used as video ram. */
653 dinfo->fb_base = (u32)ioremap(dinfo->fb_base_phys + dinfo->fb_offset,
654 dinfo->video_ram);
655 if (!dinfo->fb_base) {
656 ERR_MSG("Cannot map framebuffer.\n");
657 cleanup(dinfo);
658 return -ENODEV;
659 }
660
661 if (dinfo->accel) {
662 /* Map the ring buffer. */
663 dinfo->ring_base = (u32)ioremap(dinfo->ring_base_phys,
664 dinfo->ring_size);
665 if (!dinfo->ring_base) {
666 dinfo->accel = 0;
667 WRN_MSG("Cannot map ring buffer: "
668 "acceleration disabled.\n");
669 }
670 }
671
672 if (dinfo->hwcursor && !dinfo->mobile) {
673 /* Map the HW cursor buffer. */
674 dinfo->cursor_base = (u32)ioremap(dinfo->cursor_base_phys,
675 dinfo->cursor_size);
676 if (!dinfo->cursor_base) {
677 WRN_MSG("Cannot map the HW cursor space: "
678 "HW cursor disabled.\n");
679 dinfo->hwcursor = 0;
680 }
681 }
682
683 /*
684 * For mobile platforms, a physical page address is needed for the
685 * HW cursor. Allocate it here and insert it into the GTT.
686 * If/when this driver is modified to be aware of the agpgart
687 * driver, it can be used to obtain/insert the page.
688 */
689 if (dinfo->hwcursor && dinfo->mobile) {
690 #if !MOBILE_HW_CURSOR
691 dinfo->hwcursor = 0;
692 INF_MSG("HW cursor is not supported for mobile platforms.\n");
693 #else
694 struct page *pg;
695
696 /*
697 * Allocate a page of physical memory for the graphics
698 * engine to write to for synchronisation purposes.
699 */
700 pg = alloc_page(GFP_KERNEL);
701 if (!pg) {
702 WRN_MSG("Cannot allocate a page for the HW cursor. "
703 "Disabling the HW cursor.");
704 dinfo->hwcursor = 0;
705 } else {
706 get_page(pg);
707 LockPage(pg);
708 dinfo->cursor_page_virt = (u32)page_address(pg);
709 dinfo->cursor_base_real =
710 virt_to_phys(page_address(pg));
711
712 /*
713 * XXX Add code to insert GTT entry and map the
714 * appropriate part of the aperture as
715 * dinfo->cursor_base.
716 */
717 }
718 #endif
719 }
720 DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%x)\n",
721 dinfo->fb_base_phys, dinfo->fb_offset, dinfo->video_ram,
722 dinfo->fb_base);
723 DBG_MSG("MMIO: 0x%x/0x%x (0x%x)\n",
724 dinfo->mmio_base_phys, INTEL_REG_SIZE, dinfo->mmio_base);
725 DBG_MSG("ring buffer: 0x%x/0x%x (0x%x)\n",
726 dinfo->ring_base_phys, dinfo->ring_size, dinfo->ring_base);
727 DBG_MSG("HW cursor: 0x%x/0x%x (0x%x) (offset 0x%x) (phys 0x%x)\n",
728 dinfo->cursor_base_phys, dinfo->cursor_size,
729 dinfo->cursor_base, dinfo->cursor_offset,
730 dinfo->cursor_base_real);
731
732 DBG_MSG("options: accel = %d, fixed = %d, noinit = %d\n",
733 accel, fixed, noinit);
734 DBG_MSG("options: mode = \"%s\", font = \"%s\"\n",
735 mode ? mode : "", font ? font : "");
736
737 if (probeonly)
738 bailout(dinfo);
739
740 dinfo->fixed_mode = fixed;
741
742 /*
743 * Check if the LVDS port or any DVO ports are enabled. If so,
744 * don't allow mode switching.
745 */
746 if ((s = intelfbhw_check_non_crt(dinfo))) {
747 WRN_MSG("Non-CRT device is enabled (%s). "
748 "Disabling mode switching.\n", s);
749 dinfo->fixed_mode = 1;
750 }
751
752 if (bailearly == 1)
753 bailout(dinfo);
754
755 if (dinfo->fixed_mode && ORIG_VIDEO_ISVGA != VIDEO_TYPE_VLFB) {
756 ERR_MSG("Video mode must be programmed at boot time.\n");
757 cleanup(dinfo);
758 return -ENODEV;
759 }
760
761 if (bailearly == 2)
762 bailout(dinfo);
763
764 /* Initialise dinfo and related data. */
765 /* If an initial mode was programmed at boot time, get its details. */
766 if (ORIG_VIDEO_ISVGA == VIDEO_TYPE_VLFB)
767 get_initial_mode(dinfo);
768
769 if (bailearly == 3)
770 bailout(dinfo);
771
772 #if 0
773 if (dinfo->fixed_mode) {
774 /*
775 * XXX Check video ram amounts and remap if the region already
776 * mapped is too small because of ring/cursor allocations.
777 */
778 update_dinfo(dinfo, &dinfo->initial_var, NULL);
779 }
780 #endif
781
782 /* currcon will be set by the first switch. */
783 dinfo->currcon = -1;
784 dinfo->vc_mode = KD_TEXT;
785
786 #if USE_SYNC_PAGE
787 if (dinfo->accel) {
788 struct page *pg;
789
790 /*
791 * Allocate a page of physical memory for the graphics
792 * engine to write to for synchronisation purposes.
793 */
794 pg = alloc_page(GFP_KERNEL);
795 if (!pg) {
796 WRN_MSG("Cannot allocate a page for 2D accel. "
797 "Disabling acceleration.");
798 dinfo->accel = 0;
799 } else {
800 get_page(pg);
801 LockPage(pg);
802 dinfo->syncpage_virt = (u32)page_address(pg);
803 dinfo->syncpage_phys = virt_to_phys(page_address(pg));
804 /* Write zero to the first dword */
805 writel(0, dinfo->syncpage_virt);
806 DBG_MSG("2D sync page: 0x%x (0x%x)\n",
807 dinfo->syncpage_phys, dinfo->syncpage_virt);
808 }
809 }
810 #endif
811
812 if (bailearly == 4)
813 bailout(dinfo);
814
815
816 if (intelfb_set_fbinfo(dinfo)) {
817 cleanup(dinfo);
818 return -ENODEV;
819 }
820
821 if (bailearly == 5)
822 bailout(dinfo);
823
824 for (i = 0; i < 16; i++) {
825 j = color_table[i];
826 dinfo->palette[i].red = default_red[j];
827 dinfo->palette[i].green = default_grn[j];
828 dinfo->palette[i].blue = default_blu[j];
829 }
830
831 if (bailearly == 6)
832 bailout(dinfo);
833
834 pci_set_drvdata(pdev, dinfo);
835
836 /* Save the initial register state. */
837 i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
838 bailearly > 6 ? bailearly - 6 : 0);
839 if (i != 0) {
840 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
841 bailout(dinfo);
842 }
843
844 intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
845
846 if (bailearly == 18)
847 bailout(dinfo);
848
849 #if TEST_MODE_TO_HW
850 {
851 struct intelfb_hwstate hw;
852 struct fb_var_screeninfo var;
853 int i;
854
855 for (i = 0; i < num_modes; i++) {
856 mode_to_var(&modedb[i], &var, 8);
857 intelfbhw_read_hw_state(dinfo, &hw, 0);
858 if (intelfbhw_mode_to_hw(dinfo, &hw, &var)) {
859 DGB_MSG("Failed to set hw for mode %dx%d\n",
860 var.xres, var.yres);
861 } else {
862 DGB_MSG("HW state for mode %dx%d\n",
863 var.xres, var.yres);
864 intelfbhw_print_hw_state(dinfo, &hw);
865 }
866 }
867 }
868 #endif
869
870 /* Cursor initialisation */
871 if (dinfo->hwcursor) {
872 init_timer(&dinfo->cursor.timer);
873 dinfo->cursor.timer.function = intelfb_flashcursor;
874 dinfo->cursor.timer.data = (unsigned long)dinfo;
875 dinfo->cursor.state = CM_ERASE;
876 spin_lock_init(&dinfo->DAClock);
877 }
878
879 if (bailearly == 19)
880 bailout(dinfo);
881
882
883 if (noregister)
884 bailout(dinfo);
885
886 if (register_framebuffer(&(dinfo->info)) < 0) {
887 ERR_MSG("Cannot register framebuffer.\n");
888 cleanup(dinfo);
889 return -ENODEV;
890 }
891
892 dinfo->registered = 1;
893
894 return 0;
895 }
896
897 static void __devexit
intelfb_pci_unregister(struct pci_dev * pdev)898 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 pci_set_drvdata(pdev, NULL);
910 }
911
912 /*
913 * A simplified version of fb_find_mode. The latter doesn't seem to work
914 * too well -- haven't figured out why yet.
915 */
916 static int
intelfb_find_mode(struct fb_var_screeninfo * var,struct fb_info * info,const char * mode_option,const struct fb_videomode * db,unsigned int dbsize,const struct fb_videomode * default_mode,unsigned int default_bpp)917 intelfb_find_mode(struct fb_var_screeninfo *var,
918 struct fb_info *info, const char *mode_option,
919 const struct fb_videomode *db, unsigned int dbsize,
920 const struct fb_videomode *default_mode,
921 unsigned int default_bpp)
922 {
923 int i;
924 char mname[20] = "", tmp[20] = "", *p, *q;
925 unsigned int bpp = 0;
926
927 DBG_MSG("intelfb_find_mode\n");
928
929 /* Set up defaults */
930 if (!db) {
931 db = modedb;
932 dbsize = sizeof(modedb) / sizeof(*modedb);
933 }
934
935 if (!default_bpp)
936 #if defined(FBCON_HAS_CFB8)
937 default_bpp = 8;
938 #elif defined(FBCON_HAS_CFB16)
939 default_bpp = 16;
940 #elif defined(FBCON_HAS_CFB32)
941 default_bpp = 32;
942 #endif
943
944 var->activate = FB_ACTIVATE_TEST;
945 if (mode_option && *mode_option) {
946 if (strlen(mode_option) < sizeof(tmp) - 1) {
947 strcat(tmp, mode_option);
948 q = tmp;
949 p = strsep(&q, "-");
950 strcat(mname, p);
951 if (q) {
952 p = strsep(&q, "@");
953 bpp = simple_strtoul(p, NULL, 10);
954 if (q) {
955 strcat(mname, "@");
956 strcat(mname, q);
957 }
958 }
959 }
960 if (!bpp)
961 bpp = default_bpp;
962 DBG_MSG("Mode is %s, bpp %d\n", mname, bpp);
963 }
964 if (*mname) {
965 for (i = 0; i < dbsize; i++) {
966 if (!strncmp(db[i].name, mname, strlen(mname))) {
967 mode_to_var(&db[i], var, bpp);
968 if (!intelfb_set_var(var, -1, info))
969 return 1;
970 }
971 }
972 }
973
974 if (!default_mode)
975 return 0;
976
977 mode_to_var(default_mode, var, default_bpp);
978 if (!intelfb_set_var(var, -1, info))
979 return 3;
980
981 for (i = 0; i < dbsize; i++) {
982 mode_to_var(&db[i], var, default_bpp);
983 if (!intelfb_set_var(var, -1, info))
984 return 4;
985 }
986
987 return 0;
988 }
989
990 static __inline__ int
var_to_refresh(const struct fb_var_screeninfo * var)991 var_to_refresh(const struct fb_var_screeninfo *var)
992 {
993 int xtot = var->xres + var->left_margin + var->right_margin +
994 var->hsync_len;
995 int ytot = var->yres + var->upper_margin + var->lower_margin +
996 var->vsync_len;
997
998 return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
999 }
1000
1001 /* Various intialisation functions */
1002
1003 static int __devinit
intelfb_init_disp_var(struct intelfb_info * dinfo)1004 intelfb_init_disp_var(struct intelfb_info *dinfo)
1005 {
1006 int msrc = 0;
1007
1008 DBG_MSG("intelfb_init_disp_var\n");
1009
1010 if (dinfo->fixed_mode) {
1011 dinfo->disp.var = dinfo->initial_var;
1012 msrc = 5;
1013 } else {
1014 if (mode) {
1015 msrc = intelfb_find_mode(&dinfo->disp.var,
1016 &dinfo->info, mode,
1017 modedb, num_modes, NULL, 0);
1018 if (msrc)
1019 msrc |= 8;
1020 }
1021 if (!msrc) {
1022 msrc = intelfb_find_mode(&dinfo->disp.var,
1023 &dinfo->info, PREFERRED_MODE,
1024 modedb, num_modes,
1025 &modedb[DFLT_MODE], 0);
1026 }
1027 }
1028
1029 if (!msrc) {
1030 ERR_MSG("Cannot find a suitable video mode.\n");
1031 return 1;
1032 }
1033
1034 INF_MSG("Initial video mode is %dx%d-%d@%d.\n", dinfo->disp.var.xres,
1035 dinfo->disp.var.yres, intelfb_var_to_depth(&dinfo->disp.var),
1036 var_to_refresh(&dinfo->disp.var));
1037
1038 DBG_MSG("Initial video mode is from %d.\n", msrc);
1039
1040 if (dinfo->accel)
1041 dinfo->disp.var.accel_flags |= FB_ACCELF_TEXT;
1042 else
1043 dinfo->disp.var.accel_flags &= ~FB_ACCELF_TEXT;
1044
1045 return 0;
1046 }
1047
1048 static void
intelfb_set_dispsw(struct intelfb_info * dinfo,struct display * disp)1049 intelfb_set_dispsw(struct intelfb_info *dinfo, struct display *disp)
1050 {
1051 DBG_MSG("intelfb_set_dispsw: (bpp is %d)\n", disp->var.bits_per_pixel);
1052
1053 disp->dispsw_data = NULL;
1054 disp->dispsw = NULL;
1055
1056 switch (disp->var.bits_per_pixel) {
1057 #ifdef FBCON_HAS_CFB8
1058 case 8:
1059 break;
1060 #endif
1061 #ifdef FBCON_HAS_CFB16
1062 case 16:
1063 disp->dispsw_data = &dinfo->con_cmap.cfb16;
1064 break;
1065 #endif
1066 #ifdef FBCON_HAS_CFB32
1067 case 32:
1068 disp->dispsw_data = &dinfo->con_cmap.cfb32;
1069 break;
1070 #endif
1071 default:
1072 WRN_MSG("Setting fbcon_dummy renderer (bpp is %d).\n",
1073 disp->var.bits_per_pixel);
1074 disp->dispsw = &fbcon_dummy;
1075 }
1076 /* For all supported bpp. */
1077 if (!disp->dispsw)
1078 disp->dispsw = &fbcon_intelfb;
1079 }
1080
1081 static int __devinit
intelfb_init_disp(struct intelfb_info * dinfo)1082 intelfb_init_disp(struct intelfb_info *dinfo)
1083 {
1084 struct fb_info *info;
1085 struct display *disp;
1086
1087 DBG_MSG("intelfb_init_disp\n");
1088
1089 info = &dinfo->info;
1090 disp = &dinfo->disp;
1091
1092 if (intelfb_init_disp_var(dinfo))
1093 return 1;
1094
1095 info->disp = disp;
1096
1097 update_dinfo(dinfo, &disp->var, disp);
1098
1099 intelfb_set_dispsw(dinfo, disp);
1100
1101 dinfo->currcon_display = disp;
1102
1103 return 0;
1104 }
1105
1106 static int __devinit
intelfb_set_fbinfo(struct intelfb_info * dinfo)1107 intelfb_set_fbinfo(struct intelfb_info *dinfo)
1108 {
1109 struct fb_info *info;
1110
1111 DBG_MSG("intelfb_set_fbinfo\n");
1112
1113 info = &dinfo->info;
1114
1115 strcpy(info->modename, dinfo->name);
1116 info->node = NODEV;
1117 info->flags = FBINFO_FLAG_DEFAULT;
1118 info->fbops = &intel_fb_ops;
1119 info->display_fg = NULL;
1120 info->changevar = NULL;
1121 info->switch_con = intelfb_switch;
1122 info->updatevar = intelfb_updatevar;
1123 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
1124 info->blank = intelfbhw_do_blank;
1125 #endif
1126
1127 if (intelfb_init_disp(dinfo))
1128 return 1;
1129 return 0;
1130 }
1131
1132 /* Update dinfo to match the active video mode. */
1133 static void
update_dinfo(struct intelfb_info * dinfo,struct fb_var_screeninfo * var,struct display * disp)1134 update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var,
1135 struct display *disp)
1136 {
1137 DBG_MSG("update_dinfo\n");
1138
1139 dinfo->bpp = var->bits_per_pixel;
1140 dinfo->depth = intelfb_var_to_depth(var);
1141 dinfo->xres = var->xres;
1142 dinfo->yres = var->xres;
1143 dinfo->pixclock = var->pixclock;
1144
1145 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1146 intelfb_get_fix(&dinfo->info.fix, dinfo->currcon, &dinfo->info);
1147 #endif
1148
1149 switch (dinfo->bpp) {
1150 #ifdef FBCON_HAS_CFB8
1151 case 8:
1152 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1153 dinfo->pitch = disp->var.xres_virtual;
1154 break;
1155 #endif
1156 #ifdef FBCON_HAS_CFB16
1157 case 16:
1158 dinfo->visual = FB_VISUAL_TRUECOLOR;
1159 dinfo->pitch = disp->var.xres_virtual * 2;
1160 break;
1161 #endif
1162 #ifdef FBCON_HAS_CFB32
1163 case 32:
1164 dinfo->visual = FB_VISUAL_TRUECOLOR;
1165 dinfo->pitch = disp->var.xres_virtual * 4;
1166 break;
1167 #endif
1168 }
1169
1170 /* Make sure the line length is a aligned correctly. */
1171 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1172
1173 if (dinfo->fixed_mode)
1174 dinfo->pitch = dinfo->initial_pitch;
1175
1176 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
1177 disp->screen_base = (char *)dinfo->fb_base;
1178 disp->visual = dinfo->visual;
1179 disp->line_length = dinfo->pitch;
1180 disp->type = FB_TYPE_PACKED_PIXELS;
1181 disp->type_aux = 0;
1182 disp->ypanstep = 1;
1183 disp->ywrapstep = 0;
1184 #else
1185 dinfo->info.screen_base = (char *)dinfo->fb_base;
1186 dinfo->info.fix.line_length = dinfo->pitch;
1187 dinfo->info.fix.visual = dinfo->visual;
1188 #endif
1189 disp->can_soft_blank = 1;
1190 disp->inverse = 0;
1191 DBG_MSG("disp->scrollmode is 0x%x\n", disp->scrollmode);
1192 if (disp->var.yres_virtual == disp->var.yres &&
1193 !(disp->var.accel_flags & FB_ACCELF_TEXT)) {
1194 /* No space for panning. */
1195 disp->scrollmode = SCROLL_YREDRAW;
1196 } else {
1197 disp->scrollmode = __SCROLL_YMOVE;
1198 }
1199 }
1200
1201 /* fbops functions */
1202
1203 static int
intelfb_get_fix(struct fb_fix_screeninfo * fix,int con,struct fb_info * info)1204 intelfb_get_fix(struct fb_fix_screeninfo *fix, int con, struct fb_info *info)
1205 {
1206 struct intelfb_info *dinfo = GET_DINFO(info);
1207 struct display *disp;
1208
1209 DBG_MSG("intelfb_get_fix\n");
1210
1211 disp = GET_DISP(info, con);
1212
1213 memset(fix, 0, sizeof(*fix));
1214 strcpy(fix->id, dinfo->name);
1215 fix->smem_start = dinfo->fb_base_phys;
1216 fix->smem_len = dinfo->video_ram;
1217 fix->type = FB_TYPE_PACKED_PIXELS;
1218 fix->type_aux = 0;
1219 fix->visual = dinfo->visual;
1220 fix->xpanstep = 8;
1221 fix->ypanstep = 1;
1222 fix->ywrapstep = 0;
1223 fix->line_length = dinfo->pitch;
1224 fix->mmio_start = dinfo->mmio_base_phys;
1225 fix->mmio_len = INTEL_REG_SIZE;
1226 fix->accel = FB_ACCEL_NONE;
1227 return 0;
1228 }
1229
1230 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
1231 static int
intelfb_get_var(struct fb_var_screeninfo * var,int con,struct fb_info * info)1232 intelfb_get_var(struct fb_var_screeninfo *var, int con, struct fb_info *info)
1233 {
1234 struct intelfb_info *dinfo = GET_DINFO(info);
1235
1236 DBG_MSG("intelfb_get_var\n");
1237
1238 if (con == -1)
1239 *var = dinfo->disp.var;
1240 else
1241 *var = fb_display[con].var;
1242
1243 return 0;
1244 }
1245 #endif
1246
1247 static int
intelfb_set_var(struct fb_var_screeninfo * var,int con,struct fb_info * info)1248 intelfb_set_var(struct fb_var_screeninfo *var, int con, struct fb_info *info)
1249 {
1250 struct display *disp;
1251 int change_var = 0;
1252 struct fb_var_screeninfo v;
1253 struct intelfb_info *dinfo;
1254 int ret;
1255 static int first = 1;
1256
1257 DBG_MSG("intelfb_set_var: con is %d, accel_flags is %d\n",
1258 con, var->accel_flags);
1259
1260 dinfo = GET_DINFO(info);
1261 disp = GET_DISP(info, con);
1262
1263 if (intelfbhw_validate_mode(dinfo, con, var) != 0)
1264 return -EINVAL;
1265
1266 memcpy(&v, var, sizeof(v));
1267
1268 /* Check for a supported bpp. */
1269 if (v.bits_per_pixel <= 8) {
1270 #ifdef FBCON_HAS_CFB8
1271 v.bits_per_pixel = 8;
1272 #else
1273 return -EINVAL;
1274 #endif
1275 } else if (v.bits_per_pixel <= 16) {
1276 #ifdef FBCON_HAS_CFB16
1277 if (v.bits_per_pixel == 16)
1278 v.green.length = 6;
1279 v.bits_per_pixel = 16;
1280 #else
1281 return -EINVAL;
1282 #endif
1283 } else if (v.bits_per_pixel <= 32) {
1284 #ifdef FBCON_HAS_CFB32
1285 v.bits_per_pixel = 32;
1286 #else
1287 return -EINVAL;
1288 #endif
1289 } else
1290 return -EINVAL;
1291
1292 if (con < 0) {
1293 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1294 info->var = *var;
1295 #endif
1296 return 0;
1297 }
1298
1299
1300 change_var = ((disp->var.xres != var->xres) ||
1301 (disp->var.yres != var->yres) ||
1302 (disp->var.xres_virtual != var->xres_virtual) ||
1303 (disp->var.yres_virtual != var->yres_virtual) ||
1304 (disp->var.bits_per_pixel != var->bits_per_pixel) ||
1305 memcmp(&disp->var.red, &var->red, sizeof(var->red)) ||
1306 memcmp(&disp->var.green, &var->green,
1307 sizeof(var->green)) ||
1308 memcmp(&disp->var.blue, &var->blue, sizeof(var->blue)));
1309
1310 if (dinfo->fixed_mode &&
1311 (change_var ||
1312 var->yres_virtual > dinfo->initial_var.yres_virtual ||
1313 var->yres_virtual < dinfo->initial_var.yres ||
1314 var->xoffset || var->nonstd)) {
1315 if (first) {
1316 ERR_MSG("Changing the video mode is not supported.\n");
1317 first = 0;
1318 }
1319 return -EINVAL;
1320 }
1321
1322 if ((var->activate & FB_ACTIVATE_MASK) != FB_ACTIVATE_NOW)
1323 return 0;
1324
1325 switch (intelfb_var_to_depth(&v)) {
1326 #ifdef FBCON_HAS_CFB8
1327 case 8:
1328 v.red.offset = v.green.offset = v.blue.offset = 0;
1329 v.red.length = v.green.length = v.blue.length = 8;
1330 v.transp.offset = v.transp.length = 0;
1331 break;
1332 #endif
1333 #ifdef FBCON_HAS_CFB16
1334 case 15:
1335 v.red.offset = 10;
1336 v.green.offset = 5;
1337 v.blue.offset = 0;
1338 v.red.length = v.green.length = v.blue.length = 5;
1339 v.transp.offset = v.transp.length = 0;
1340 break;
1341 case 16:
1342 v.red.offset = 11;
1343 v.green.offset = 5;
1344 v.blue.offset = 0;
1345 v.red.length = 5;
1346 v.green.length = 6;
1347 v.blue.length = 5;
1348 v.transp.offset = v.transp.length = 0;
1349 break;
1350 #endif
1351 #ifdef FBCON_HAS_CFB32
1352 case 24:
1353 v.red.offset = 16;
1354 v.green.offset = 8;
1355 v.blue.offset = 0;
1356 v.red.length = v.green.length = v.blue.length = 8;
1357 v.transp.offset = v.transp.length = 0;
1358 break;
1359 case 32:
1360 v.red.offset = 16;
1361 v.green.offset = 8;
1362 v.blue.offset = 0;
1363 v.red.length = v.green.length = v.blue.length = 8;
1364 v.transp.offset = 24;
1365 v.transp.length = 8;
1366 break;
1367 #endif
1368 }
1369
1370 if (v.xoffset < 0)
1371 v.xoffset = 0;
1372 if (v.yoffset < 0)
1373 v.yoffset = 0;
1374
1375 if (v.xoffset > v.xres_virtual - v.xres)
1376 v.xoffset = v.xres_virtual - v.xres;
1377 if (v.yoffset > v.yres_virtual - v.yres)
1378 v.yoffset = v.yres_virtual - v.yres;
1379
1380 v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1381 v.transp.msb_right = 0;
1382
1383 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1384 info->var = v;
1385 #endif
1386
1387 memcpy(&disp->var, &v, sizeof(v));
1388
1389 update_dinfo(dinfo, &v, disp);
1390
1391 intelfb_set_dispsw(dinfo, disp);
1392
1393 if (change_var) {
1394 if (info && info->changevar)
1395 info->changevar(con);
1396 }
1397
1398 intelfb_blank(1, info);
1399
1400 #if 0
1401 if (dinfo->hwcursor)
1402 intelfbhw_cursor_hide(dinfo);
1403 #endif
1404
1405 intelfbhw_2d_stop(dinfo);
1406
1407 if (!dinfo->fixed_mode) {
1408 mdelay(100);
1409 if ((ret = intelfb_set_mode(dinfo, &v, disp, 1)))
1410 return ret;
1411
1412 mdelay(100);
1413 }
1414
1415 if (dinfo->vc_mode == KD_TEXT) {
1416 intelfb_do_install_cmap(con, info);
1417
1418 if (dinfo->hwcursor) {
1419 del_timer(&dinfo->cursor.timer);
1420 dinfo->cursor.state = CM_ERASE;
1421 if (disp->conp) {
1422 intelfbhw_cursor_init(dinfo);
1423 intelfbhw_cursor_load(dinfo, disp);
1424 dinfo->cursor.redraw = 1;
1425 }
1426 }
1427
1428 mdelay(100);
1429
1430 intelfbhw_2d_start(dinfo);
1431 #if 0
1432 if (dinfo->hwcursor)
1433 intelfbhw_cursor_show(dinfo);
1434 #endif
1435
1436 if (v.yoffset != 0)
1437 intelfbhw_pan_display(&v, con, info);
1438 } else {
1439 dinfo->cursor.enabled = 0;
1440 }
1441
1442 intelfb_blank(0, info);
1443
1444 return 0;
1445 }
1446
1447 static int
intelfb_get_cmap(struct fb_cmap * cmap,int kspc,int con,struct fb_info * info)1448 intelfb_get_cmap(struct fb_cmap *cmap, int kspc, int con, struct fb_info *info)
1449 {
1450 struct intelfb_info *dinfo = GET_DINFO(info);
1451 struct display *disp = GET_DISP(info, con);
1452
1453 DBG_MSG("intelfb_get_cmap: con = %d, bpp = %d\n", con,
1454 disp->var.bits_per_pixel);
1455
1456 if (con == dinfo->currcon)
1457 return fb_get_cmap(cmap, kspc, intelfb_getcolreg, info);
1458 else if (disp->cmap.len)
1459 fb_copy_cmap(&disp->cmap, cmap, kspc ? 0 : 2);
1460 else {
1461 int cmap_len = (disp->var.bits_per_pixel > 8) ? 16 : 256;
1462 fb_copy_cmap(fb_default_cmap(cmap_len), cmap, kspc ? 0 : 2);
1463 }
1464 return 0;
1465 }
1466
1467 static int
intelfb_set_cmap(struct fb_cmap * cmap,int kspc,int con,struct fb_info * info)1468 intelfb_set_cmap(struct fb_cmap *cmap, int kspc, int con, struct fb_info *info)
1469 {
1470 struct intelfb_info *dinfo = GET_DINFO(info);
1471 struct display *disp = GET_DISP(info, con);
1472 unsigned int cmap_len;
1473 int err;
1474
1475 DBG_MSG("intelfb_set_cmap: con = %d, bpp = %d\n", con,
1476 disp->var.bits_per_pixel);
1477
1478 cmap_len = (disp->var.bits_per_pixel > 8) ? 16 : 256;
1479 if (!disp->cmap.len) {
1480 err = fb_alloc_cmap(&disp->cmap, cmap_len, 0);
1481 if (err)
1482 return err;
1483 }
1484 if (con == dinfo->currcon)
1485 return FB_SET_CMAP(cmap, kspc, intelfb_setcolreg, info);
1486 else
1487 fb_copy_cmap(cmap, &disp->cmap, kspc ? 0 : 1);
1488
1489 return 0;
1490 }
1491
1492 /* When/if we have our own ioctls. */
1493 static int
intelfb_ioctl(struct inode * inode,struct file * file,unsigned int cmd,unsigned long arg,int con,struct fb_info * info)1494 intelfb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
1495 unsigned long arg, int con, struct fb_info *info)
1496 {
1497 DBG_MSG("intelfb_ioctl\n");
1498 return -EINVAL;
1499 }
1500
1501 static int
intelfb_switch(int con,struct fb_info * info)1502 intelfb_switch(int con, struct fb_info *info)
1503 {
1504 struct intelfb_info *dinfo = GET_DINFO(info);
1505 struct display *disp;
1506 struct fb_cmap *cmap;
1507 int switchmode = 0;
1508
1509 DBG_MSG("intelfb_switch: con = %d, currcon = %d\n",
1510 con, dinfo->currcon);
1511
1512 disp = GET_DISP(info, con);
1513 if (dinfo->currcon >= 0) {
1514 cmap = &dinfo->currcon_display->cmap;
1515 if (cmap->len)
1516 fb_get_cmap(cmap, 1, intelfb_getcolreg, info);
1517 }
1518
1519 switchmode = (con != dinfo->currcon);
1520
1521 dinfo->currcon = con;
1522 dinfo->vc_mode = con >= 0 ? vt_cons[con]->vc_mode : KD_TEXT;
1523 dinfo->currcon_display = disp;
1524 disp->var.activate = FB_ACTIVATE_NOW;
1525
1526 if (switchmode) {
1527 intelfb_set_var(&disp->var, con, info);
1528 intelfb_do_install_cmap(con, info);
1529 }
1530
1531 return 0;
1532 }
1533
1534 /* Called whenever there's panning. */
1535 static int
intelfb_updatevar(int con,struct fb_info * info)1536 intelfb_updatevar(int con, struct fb_info *info)
1537 {
1538 struct display *disp = GET_DISP(info, con);
1539
1540 DBG_MSG("intelfb_updatevar\n");
1541
1542 if (con < 0)
1543 return -EINVAL;
1544 else
1545 return intelfbhw_pan_display(&disp->var, con, info);
1546 }
1547
1548 static int
intelfb_blank(int blank,struct fb_info * info)1549 intelfb_blank(int blank, struct fb_info *info)
1550 {
1551 intelfbhw_do_blank(blank, info);
1552 return 0;
1553 }
1554
1555 static int
intelfb_getcolreg(unsigned regno,unsigned * red,unsigned * green,unsigned * blue,unsigned * transp,struct fb_info * info)1556 intelfb_getcolreg(unsigned regno, unsigned *red, unsigned *green,
1557 unsigned *blue, unsigned *transp, struct fb_info *info)
1558 {
1559 struct intelfb_info *dinfo = GET_DINFO(info);
1560
1561 #if 0
1562 DBG_MSG("intelfb_getcolreg\n");
1563 #endif
1564
1565 if (regno > 255)
1566 return 1;
1567
1568 *red = (dinfo->palette[regno].red<<8) | dinfo->palette[regno].red;
1569 *green = (dinfo->palette[regno].green<<8) | dinfo->palette[regno].green;
1570 *blue = (dinfo->palette[regno].blue<<8) | dinfo->palette[regno].blue;
1571 *transp = 0;
1572
1573 return 0;
1574 }
1575
1576 static int
intelfb_setcolreg(unsigned regno,unsigned red,unsigned green,unsigned blue,unsigned transp,struct fb_info * info)1577 intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1578 unsigned blue, unsigned transp, struct fb_info *info)
1579 {
1580 struct intelfb_info *dinfo = GET_DINFO(info);
1581
1582 #if 1
1583 DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1584 #endif
1585
1586 if ((dinfo->depth > 8 && regno > 16) || regno > 255)
1587 return 1;
1588
1589 switch (dinfo->depth) {
1590 #ifdef FBCON_HAS_CFB8
1591 case 8:
1592 {
1593 red >>= 8;
1594 green >>= 8;
1595 blue >>= 8;
1596
1597 dinfo->palette[regno].red = red;
1598 dinfo->palette[regno].green = green;
1599 dinfo->palette[regno].blue = blue;
1600
1601 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1602 transp);
1603 }
1604 break;
1605 #endif
1606 #ifdef FBCON_HAS_CFB16
1607 case 15:
1608 dinfo->con_cmap.cfb16[regno] = ((red & 0xf800) >> 1) |
1609 ((green & 0xf800) >> 6) |
1610 ((blue & 0xf800) >> 11);
1611 break;
1612 case 16:
1613 dinfo->con_cmap.cfb16[regno] = (red & 0xf800) |
1614 ((green & 0xfc00) >> 5) |
1615 ((blue & 0xf800) >> 11);
1616 break;
1617 #endif
1618 #ifdef FBCON_HAS_CFB32
1619 case 24:
1620 dinfo->con_cmap.cfb32[regno] = ((red & 0xff00) << 8) |
1621 (green & 0xff00) |
1622 ((blue & 0xff00) >> 8);
1623 break;
1624 #endif
1625 }
1626 return 0;
1627 }
1628
1629 /* Convert a mode to a var, also making the bpp a supported value. */
1630 static void
mode_to_var(const struct fb_videomode * mode,struct fb_var_screeninfo * var,u32 bpp)1631 mode_to_var(const struct fb_videomode *mode, struct fb_var_screeninfo *var,
1632 u32 bpp)
1633 {
1634 if (!mode || !var)
1635 return;
1636
1637 var->xres = mode->xres;
1638 var->yres = mode->yres;
1639 var->xres_virtual = mode->xres;
1640 var->yres_virtual = mode->yres;
1641 var->xoffset = 0;
1642 var->yoffset = 0;
1643 if (bpp <= 8)
1644 var->bits_per_pixel = 8;
1645 else if (bpp <= 16) {
1646 if (bpp == 16)
1647 var->green.length = 6;
1648 var->bits_per_pixel = 16;
1649 } else if (bpp <= 32)
1650 var->bits_per_pixel = 32;
1651 else {
1652 WRN_MSG("var_to_mode: bad bpp: %d\n", bpp);
1653 var->bits_per_pixel = bpp;
1654 }
1655 var->pixclock = mode->pixclock;
1656 var->left_margin = mode->left_margin;
1657 var->right_margin = mode->right_margin;
1658 var->upper_margin = mode->upper_margin;
1659 var->lower_margin = mode->lower_margin;
1660 var->hsync_len = mode->hsync_len;
1661 var->vsync_len = mode->vsync_len;
1662 var->sync = mode->sync;
1663 var->vmode = mode->vmode;
1664 var->width = -1;
1665 var->height = -1;
1666 }
1667
1668 static int
intelfb_set_mode(struct intelfb_info * dinfo,struct fb_var_screeninfo * var,struct display * disp,int blank)1669 intelfb_set_mode(struct intelfb_info *dinfo, struct fb_var_screeninfo *var,
1670 struct display *disp, int blank)
1671 {
1672 struct intelfb_hwstate hw;
1673
1674 DBG_MSG("intelfb_set_mode (%dx%d-%d)\n", var->xres, var->yres,
1675 intelfb_var_to_depth(var));
1676
1677 memcpy(&hw, &dinfo->save_state, sizeof(hw));
1678 if (intelfbhw_mode_to_hw(dinfo, &hw, var))
1679 return -EINVAL;
1680 intelfbhw_print_hw_state(dinfo, &hw);
1681 if (intelfbhw_program_mode(dinfo, &hw, blank))
1682 return -EINVAL;
1683
1684 update_dinfo(dinfo, var, disp);
1685
1686 return 0;
1687 }
1688
1689 static void
intelfb_do_install_cmap(int con,struct fb_info * info)1690 intelfb_do_install_cmap(int con, struct fb_info *info)
1691 {
1692 struct intelfb_info *dinfo = GET_DINFO(info);
1693 struct display *disp;
1694
1695 if (con != dinfo->currcon)
1696 return;
1697
1698 disp = GET_DISP(info, con);
1699 if (disp->cmap.len)
1700 FB_SET_CMAP(&disp->cmap, 1, intelfb_setcolreg, info);
1701 else {
1702 int size = (disp->var.bits_per_pixel > 8) ? 16 : 256;
1703 FB_SET_CMAP(fb_default_cmap(size), 1, intelfb_setcolreg, info);
1704 }
1705 }
1706
1707 static void
check_vc_mode(struct intelfb_info * dinfo)1708 check_vc_mode(struct intelfb_info *dinfo)
1709 {
1710 #if VERBOSE > 1
1711 DBG_MSG("check_vc_mode\n");
1712 #endif
1713
1714 if (dinfo->currcon >= 0) {
1715 if (vt_cons[dinfo->currcon]->vc_mode != dinfo->vc_mode) {
1716 dinfo->vc_mode = vt_cons[dinfo->currcon]->vc_mode;
1717 if (dinfo->vc_mode == KD_GRAPHICS) {
1718 DBG_MSG("vc_mode changed to KD_GRAPHICS\n");
1719 intelfbhw_2d_stop(dinfo);
1720 if (dinfo->cursor.enabled) {
1721 intelfbhw_cursor_hide(dinfo);
1722 dinfo->cursor.enabled = 1;
1723 }
1724 } else {
1725 DBG_MSG("vc_mode changed to KD_TEXT\n");
1726 intelfbhw_2d_start(dinfo);
1727 #if 0
1728 if (dinfo->cursor.enabled)
1729 intelfbhw_cursor_show(dinfo);
1730 #endif
1731 }
1732 }
1733 }
1734 }
1735
1736 static void
fbcon_intelfb_setup(struct display * p)1737 fbcon_intelfb_setup(struct display *p)
1738 {
1739 struct intelfb_info *dinfo = GET_DINFO(p->fb_info);
1740
1741 DBG_MSG("fbcon_intelfb_setup: accel: %d bpp: %d\n",
1742 TEXT_ACCEL(dinfo, &p->var), p->var.bits_per_pixel);
1743
1744 switch (p->var.bits_per_pixel) {
1745 #ifdef FBCON_HAS_CFB8
1746 case 8:
1747 fbcon_cfb8.setup(p);
1748 break;
1749 #endif
1750 #ifdef FBCON_HAS_CFB16
1751 case 16:
1752 fbcon_cfb16.setup(p);
1753 break;
1754 #endif
1755 #ifdef FBCON_HAS_CFB32
1756 case 32:
1757 fbcon_cfb32.setup(p);
1758 break;
1759 #endif
1760 }
1761 }
1762
1763 static void
fbcon_intelfb_bmove(struct display * p,int sy,int sx,int dy,int dx,int height,int width)1764 fbcon_intelfb_bmove(struct display *p, int sy, int sx, int dy, int dx,
1765 int height, int width)
1766 {
1767 struct intelfb_info *dinfo = GET_DINFO(p->fb_info);
1768
1769 #if VERBOSE > 0
1770 DBG_MSG("fbcon_intelfb_bmove: accel: %d, bpp: %d\n",
1771 TEXT_ACCEL(dinfo, &p->var), p->var.bits_per_pixel);
1772 #endif
1773
1774 if (TEXT_ACCEL(dinfo, &p->var)) {
1775 intelfbhw_do_bitblt(dinfo, fontwidth(p) * sx,
1776 fontheight(p) * sy,
1777 fontwidth(p) * dx, fontheight(p) * dy,
1778 fontwidth(p) * width,
1779 fontheight(p) * height,
1780 dinfo->pitch, p->var.bits_per_pixel);
1781 intelfbhw_do_sync(dinfo);
1782 return;
1783 }
1784
1785 /* Non-accel fallback */
1786 switch (p->var.bits_per_pixel) {
1787 #ifdef FBCON_HAS_CFB8
1788 case 8:
1789 fbcon_cfb8.bmove(p, sy, sx, dy, dx, height, width);
1790 break;
1791 #endif
1792 #ifdef FBCON_HAS_CFB16
1793 case 16:
1794 fbcon_cfb16.bmove(p, sy, sx, dy, dx, height, width);
1795 break;
1796 #endif
1797 #ifdef FBCON_HAS_CFB32
1798 case 32:
1799 fbcon_cfb32.bmove(p, sy, sx, dy, dx, height, width);
1800 break;
1801 #endif
1802 }
1803 }
1804
1805 static void
fbcon_intelfb_clear(struct vc_data * conp,struct display * p,int sy,int sx,int height,int width)1806 fbcon_intelfb_clear(struct vc_data *conp, struct display *p, int sy, int sx,
1807 int height, int width)
1808 {
1809 struct intelfb_info *dinfo = GET_DINFO(p->fb_info);
1810
1811 #if VERBOSE > 0
1812 DBG_MSG("fbcon_intelfb_clear: accel: %d, bpp: %d\n",
1813 TEXT_ACCEL(dinfo, &p->var), p->var.bits_per_pixel);
1814 #endif
1815
1816 if (TEXT_ACCEL(dinfo, &p->var)) {
1817 u32 bg = 0;
1818
1819 switch (p->var.bits_per_pixel) {
1820 case 8:
1821 bg = attr_bgcol_ec(p, conp);
1822 break;
1823 case 16:
1824 bg = ((u16 *)p->dispsw_data)[attr_bgcol_ec(p, conp)];
1825 break;
1826 case 32:
1827 bg = ((u32 *)p->dispsw_data)[attr_bgcol_ec(p, conp)];
1828 break;
1829 }
1830 intelfbhw_do_fillrect(dinfo, fontwidth(p) * sx,
1831 fontheight(p) * sy, fontwidth(p) * width,
1832 fontheight(p) * height, bg, dinfo->pitch,
1833 p->var.bits_per_pixel, PAT_ROP_GXCOPY);
1834 intelfbhw_do_sync(dinfo);
1835 return;
1836 }
1837
1838 /* Non-accel fallback */
1839 switch (p->var.bits_per_pixel) {
1840 #ifdef FBCON_HAS_CFB8
1841 case 8:
1842 fbcon_cfb8.clear(conp, p, sy, sx, height, width);
1843 break;
1844 #endif
1845 #ifdef FBCON_HAS_CFB16
1846 case 16:
1847 fbcon_cfb16.clear(conp, p, sy, sx, height, width);
1848 break;
1849 #endif
1850 #ifdef FBCON_HAS_CFB32
1851 case 32:
1852 fbcon_cfb32.clear(conp, p, sy, sx, height, width);
1853 break;
1854 #endif
1855 }
1856 }
1857
1858 static void
fbcon_intelfb_putc(struct vc_data * conp,struct display * p,int c,int yy,int xx)1859 fbcon_intelfb_putc(struct vc_data *conp, struct display *p, int c,
1860 int yy, int xx)
1861 {
1862 struct intelfb_info *dinfo = GET_DINFO(p->fb_info);
1863
1864 #if VERBOSE > 0
1865 DBG_MSG("fbcon_intelfb_putc: accel: %d, bpp: %d\n",
1866 TEXT_ACCEL(dinfo, &p->var), p->var.bits_per_pixel);
1867 #endif
1868
1869 /* intelfbhw_do_drawglyph() has problems with the 852GM/855GM */
1870 if (TEXT_ACCEL(dinfo, &p->var) && USE_DRAWGLYPH(dinfo)) {
1871 u32 bg = 0, fg = 0;
1872 u8 *cdat;
1873 int fw;
1874
1875 switch (p->var.bits_per_pixel) {
1876 case 8:
1877 bg = attr_bgcol(p, c);
1878 fg = attr_fgcol(p, c);
1879 break;
1880 case 16:
1881 bg = ((u16 *)p->dispsw_data)[attr_bgcol(p, c)];
1882 fg = ((u16 *)p->dispsw_data)[attr_fgcol(p, c)];
1883 break;
1884 case 32:
1885 bg = ((u32 *)p->dispsw_data)[attr_bgcol(p, c)];
1886 fg = ((u32 *)p->dispsw_data)[attr_fgcol(p, c)];
1887 break;
1888 }
1889
1890 fw = ROUND_UP_TO(fontwidth(p), 8) / 8;
1891 cdat = p->fontdata + (c & p->charmask) * fontheight(p) * fw;
1892
1893 if (intelfbhw_do_drawglyph(dinfo, fg, bg, fontwidth(p),
1894 fontheight(p), cdat,
1895 xx * fontwidth(p),
1896 yy * fontheight(p), dinfo->pitch,
1897 p->var.bits_per_pixel)) {
1898 intelfbhw_do_sync(dinfo);
1899 return;
1900 }
1901 }
1902
1903 if (TEXT_ACCEL(dinfo, &p->var))
1904 intelfbhw_do_sync(dinfo);
1905
1906 /* Non-accel fallback */
1907 switch (p->var.bits_per_pixel) {
1908 #ifdef FBCON_HAS_CFB8
1909 case 8:
1910 fbcon_cfb8.putc(conp, p, c, yy, xx);
1911 break;
1912 #endif
1913 #ifdef FBCON_HAS_CFB16
1914 case 16:
1915 fbcon_cfb16.putc(conp, p, c, yy, xx);
1916 break;
1917 #endif
1918 #ifdef FBCON_HAS_CFB32
1919 case 32:
1920 fbcon_cfb32.putc(conp, p, c, yy, xx);
1921 break;
1922 #endif
1923 }
1924 }
1925
1926 static void
fbcon_intelfb_putcs(struct vc_data * conp,struct display * p,const unsigned short * s,int count,int yy,int xx)1927 fbcon_intelfb_putcs(struct vc_data *conp, struct display *p,
1928 const unsigned short *s, int count, int yy, int xx)
1929 {
1930 struct intelfb_info *dinfo = GET_DINFO(p->fb_info);
1931
1932 #if VERBOSE > 0
1933 DBG_MSG("fbcon_intelfb_putcs: accel: %d, bpp: %d, (%d,%d) %d\n",
1934 TEXT_ACCEL(dinfo, &p->var), p->var.bits_per_pixel,
1935 xx, yy, count);
1936 #endif
1937
1938 if (TEXT_ACCEL(dinfo, &p->var) && USE_DRAWGLYPH(dinfo)) {
1939 u32 bg = 0, fg = 0;
1940 u8 *cdat;
1941 int fw;
1942 u16 c = scr_readw(s);
1943
1944 switch (p->var.bits_per_pixel) {
1945 case 8:
1946 bg = attr_bgcol(p, c);
1947 fg = attr_fgcol(p, c);
1948 break;
1949 case 16:
1950 bg = ((u16 *)p->dispsw_data)[attr_bgcol(p, c)];
1951 fg = ((u16 *)p->dispsw_data)[attr_fgcol(p, c)];
1952 break;
1953 case 32:
1954 bg = ((u32 *)p->dispsw_data)[attr_bgcol(p, c)];
1955 fg = ((u32 *)p->dispsw_data)[attr_fgcol(p, c)];
1956 break;
1957 }
1958 fw = ROUND_UP_TO(fontwidth(p), 8) / 8;
1959 while (count--) {
1960 cdat = p->fontdata + (scr_readw(s++) & p->charmask) *
1961 fontheight(p) * fw;
1962
1963 intelfbhw_do_drawglyph(dinfo, fg, bg, fontwidth(p),
1964 fontheight(p), cdat,
1965 xx * fontwidth(p),
1966 yy * fontheight(p),
1967 dinfo->pitch,
1968 p->var.bits_per_pixel);
1969 xx++;
1970 }
1971 intelfbhw_do_sync(dinfo);
1972 return;
1973 }
1974
1975 if (TEXT_ACCEL(dinfo, &p->var))
1976 intelfbhw_do_sync(dinfo);
1977
1978 /* Non-accel fallback */
1979 switch (p->var.bits_per_pixel) {
1980 #ifdef FBCON_HAS_CFB8
1981 case 8:
1982 fbcon_cfb8.putcs(conp, p, s, count, yy, xx);
1983 break;
1984 #endif
1985 #ifdef FBCON_HAS_CFB16
1986 case 16:
1987 fbcon_cfb16.putcs(conp, p, s, count, yy, xx);
1988 break;
1989 #endif
1990 #ifdef FBCON_HAS_CFB32
1991 case 32:
1992 fbcon_cfb32.putcs(conp, p, s, count, yy, xx);
1993 break;
1994 #endif
1995 }
1996 }
1997
1998 static void
fbcon_intelfb_revc(struct display * p,int xx,int yy)1999 fbcon_intelfb_revc(struct display *p, int xx, int yy)
2000 {
2001 struct intelfb_info *dinfo = GET_DINFO(p->fb_info);
2002
2003 #if VERBOSE > 0
2004 DBG_MSG("fbcon_intelfb_revc: accel: %d, bpp: %d\n",
2005 TEXT_ACCEL(dinfo, &p->var), p->var.bits_per_pixel);
2006 #endif
2007
2008 if (TEXT_ACCEL(dinfo, &p->var)) {
2009 int bpp = p->var.bits_per_pixel;
2010 u32 xor_mask = bpp == 8 ? 0x0f : 0xffffffff;
2011
2012 intelfbhw_do_fillrect(dinfo, xx * fontwidth(p),
2013 yy * fontheight(p), fontwidth(p),
2014 fontheight(p), xor_mask, dinfo->pitch,
2015 bpp, PAT_ROP_GXXOR);
2016 intelfbhw_do_sync(dinfo);
2017 return;
2018 }
2019
2020 /* Non-accel fallback */
2021 switch (p->var.bits_per_pixel) {
2022 #ifdef FBCON_HAS_CFB8
2023 case 8:
2024 fbcon_cfb8.revc(p, xx, yy);
2025 break;
2026 #endif
2027 #ifdef FBCON_HAS_CFB16
2028 case 16:
2029 fbcon_cfb16.revc(p, xx, yy);
2030 break;
2031 #endif
2032 #ifdef FBCON_HAS_CFB32
2033 case 32:
2034 fbcon_cfb32.revc(p, xx, yy);
2035 break;
2036 #endif
2037 }
2038 }
2039
2040 static void
fbcon_intelfb_clear_margins(struct vc_data * conp,struct display * p,int bottom_only)2041 fbcon_intelfb_clear_margins(struct vc_data *conp, struct display *p,
2042 int bottom_only)
2043 {
2044 struct intelfb_info *dinfo = GET_DINFO(p->fb_info);
2045
2046 #if VERBOSE > 0
2047 DBG_MSG("fbcon_intelfb_clear_margins: accel: %d, bpp: %d\n",
2048 TEXT_ACCEL(dinfo, &p->var), p->var.bits_per_pixel);
2049 #endif
2050
2051 if (TEXT_ACCEL(dinfo, &p->var)) {
2052 u32 cw, ch, rw, bh, rs, bs;
2053
2054 cw = fontwidth(p);
2055 ch = fontheight(p);
2056 rw = p->var.xres % cw;
2057 bh = p->var.yres % ch;
2058 rs = p->var.xres - rw;
2059 bs = p->var.yres - bh;
2060
2061 if (!bottom_only && rw) {
2062 intelfbhw_do_fillrect(dinfo, p->var.xoffset + rs, 0,
2063 rw, p->var.yres_virtual, 0,
2064 dinfo->pitch,
2065 p->var.bits_per_pixel,
2066 PAT_ROP_GXCOPY);
2067 }
2068 if (bh) {
2069 intelfbhw_do_fillrect(dinfo, p->var.xoffset,
2070 p->var.yoffset + bs, rs, bh, 0,
2071 dinfo->pitch,
2072 p->var.bits_per_pixel,
2073 PAT_ROP_GXCOPY);
2074 }
2075 if ((!bottom_only && rw) || bh) {
2076 intelfbhw_do_sync(dinfo);
2077 }
2078 return;
2079 }
2080
2081 /* Non-accel fallback */
2082 switch (p->var.bits_per_pixel) {
2083 #ifdef FBCON_HAS_CFB8
2084 case 8:
2085 fbcon_cfb8.clear_margins(conp, p, bottom_only);
2086 break;
2087 #endif
2088 #ifdef FBCON_HAS_CFB16
2089 case 16:
2090 fbcon_cfb16.clear_margins(conp, p, bottom_only);
2091 break;
2092 #endif
2093 #ifdef FBCON_HAS_CFB32
2094 case 32:
2095 fbcon_cfb32.clear_margins(conp, p, bottom_only);
2096 break;
2097 #endif
2098 }
2099 }
2100
2101 void
intelfb_create_cursor_shape(struct intelfb_info * dinfo,struct display * disp)2102 intelfb_create_cursor_shape(struct intelfb_info *dinfo, struct display *disp)
2103 {
2104 u32 h, cu, cd;
2105
2106 DBG_MSG("intelfb_create_cursor_shape\n");
2107
2108 h = fontheight(disp);
2109 cd = h;
2110 if (cd >= 10)
2111 cd --;
2112 dinfo->cursor.type = disp->conp->vc_cursor_type & CUR_HWMASK;
2113 switch (dinfo->cursor.type) {
2114 case CUR_NONE:
2115 cu = cd;
2116 break;
2117 case CUR_UNDERLINE:
2118 cu = cd - 2;
2119 break;
2120 case CUR_LOWER_THIRD:
2121 cu = (h * 2) / 3;
2122 break;
2123 case CUR_LOWER_HALF:
2124 cu = h / 2;
2125 break;
2126 case CUR_TWO_THIRDS:
2127 cu = h / 3;
2128 break;
2129 case CUR_BLOCK:
2130 default:
2131 cu = 0;
2132 cd = h;
2133 break;
2134 }
2135 dinfo->cursor.w = fontwidth(disp);
2136 dinfo->cursor.u = cu;
2137 dinfo->cursor.d = cd;
2138 }
2139
2140 static void
intelfb_flashcursor(unsigned long ptr)2141 intelfb_flashcursor(unsigned long ptr)
2142 {
2143 struct intelfb_info *dinfo = (struct intelfb_info *)ptr;
2144 unsigned long flags;
2145
2146 #if VERBOSE > 2
2147 DBG_MSG("intelfb_flashcursor\n");
2148 #endif
2149
2150 spin_lock_irqsave(&dinfo->DAClock, flags);
2151 if (dinfo->cursor.enabled) {
2152 if (dinfo->cursor.on)
2153 intelfbhw_cursor_hide(dinfo);
2154 else
2155 intelfbhw_cursor_show(dinfo);
2156 dinfo->cursor.enabled = 1;
2157 }
2158 dinfo->cursor.timer.expires = jiffies + HZ / 2;
2159 add_timer(&dinfo->cursor.timer);
2160 spin_unlock_irqrestore(&dinfo->DAClock, flags);
2161 }
2162
2163 static void
fbcon_intelfb_cursor(struct display * disp,int mode,int x,int y)2164 fbcon_intelfb_cursor(struct display *disp, int mode, int x, int y)
2165 {
2166 unsigned long flags = 0;
2167 struct intelfb_info *dinfo = GET_DINFO(disp->fb_info);
2168
2169 #if VERBOSE > 0
2170 DBG_MSG("fbcon_intelfb_cursor, mode is %d (%d)\n",
2171 mode, dinfo->cursor.state);
2172 #endif
2173
2174 /*
2175 * This appears to be the first place that we can detect changes
2176 * in vc_mode. We need to know this so that acceleration can be
2177 * enabled or disabled so that it won't interfere with an XFree86
2178 * server.
2179 */
2180 check_vc_mode(dinfo);
2181
2182 if (!dinfo->hwcursor) {
2183 disp->dispsw->cursor = NULL;
2184 fb_con.con_cursor(disp->conp, mode);
2185 disp->dispsw->cursor = fbcon_intelfb_cursor;
2186 return;
2187 }
2188
2189 if (mode == CM_ERASE) {
2190 if (dinfo->cursor.state != CM_ERASE) {
2191 spin_lock_irqsave(&dinfo->DAClock, flags);
2192 dinfo->cursor.state = CM_ERASE;
2193 intelfbhw_cursor_hide(dinfo);
2194 del_timer(&dinfo->cursor.timer);
2195 spin_unlock_irqrestore(&dinfo->DAClock, flags);
2196 }
2197 return;
2198 }
2199 if ((disp->conp->vc_cursor_type & CUR_HWMASK) != dinfo->cursor.type)
2200 intelfbhw_cursor_load(dinfo, disp);
2201 x *= fontwidth(disp);
2202 y *= fontheight(disp);
2203 y -= disp->var.yoffset;
2204 x -= disp->var.xoffset;
2205 spin_lock_irqsave(&dinfo->DAClock, flags);
2206 if (x != dinfo->cursor.x || y != dinfo->cursor.y ||
2207 dinfo->cursor.redraw) {
2208 #if 1
2209 intelfbhw_cursor_hide(dinfo);
2210 #endif
2211 intelfbhw_cursor_setcolor(dinfo, 0, 0xffffff);
2212 intelfbhw_cursor_setpos(dinfo, x, y);
2213 }
2214 dinfo->cursor.state = CM_DRAW;
2215 mod_timer(&dinfo->cursor.timer, jiffies + HZ / 2);
2216 intelfbhw_cursor_show(dinfo);
2217 spin_unlock_irqrestore(&dinfo->DAClock, flags);
2218 }
2219
2220