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79e53945 JB |
1 | /* |
2 | * Copyright © 2007 David Airlie | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
21 | * DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * David Airlie | |
25 | */ | |
26 | ||
27 | #include <linux/module.h> | |
28 | #include <linux/kernel.h> | |
29 | #include <linux/errno.h> | |
30 | #include <linux/string.h> | |
31 | #include <linux/mm.h> | |
32 | #include <linux/tty.h> | |
33 | #include <linux/slab.h> | |
34 | #include <linux/sysrq.h> | |
35 | #include <linux/delay.h> | |
36 | #include <linux/fb.h> | |
37 | #include <linux/init.h> | |
38 | ||
39 | #include "drmP.h" | |
40 | #include "drm.h" | |
41 | #include "drm_crtc.h" | |
42 | #include "intel_drv.h" | |
43 | #include "i915_drm.h" | |
44 | #include "i915_drv.h" | |
45 | ||
46 | struct intelfb_par { | |
47 | struct drm_device *dev; | |
48 | struct drm_display_mode *our_mode; | |
49 | struct intel_framebuffer *intel_fb; | |
50 | int crtc_count; | |
51 | /* crtc currently bound to this */ | |
52 | uint32_t crtc_ids[2]; | |
53 | }; | |
54 | ||
55 | static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green, | |
56 | unsigned blue, unsigned transp, | |
57 | struct fb_info *info) | |
58 | { | |
59 | struct intelfb_par *par = info->par; | |
60 | struct drm_device *dev = par->dev; | |
61 | struct drm_crtc *crtc; | |
62 | int i; | |
63 | ||
64 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
65 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
66 | struct drm_mode_set *modeset = &intel_crtc->mode_set; | |
67 | struct drm_framebuffer *fb = modeset->fb; | |
68 | ||
69 | for (i = 0; i < par->crtc_count; i++) | |
70 | if (crtc->base.id == par->crtc_ids[i]) | |
71 | break; | |
72 | ||
73 | if (i == par->crtc_count) | |
74 | continue; | |
75 | ||
76 | ||
77 | if (regno > 255) | |
78 | return 1; | |
79 | ||
80 | if (fb->depth == 8) { | |
81 | intel_crtc_fb_gamma_set(crtc, red, green, blue, regno); | |
82 | return 0; | |
83 | } | |
84 | ||
85 | if (regno < 16) { | |
86 | switch (fb->depth) { | |
87 | case 15: | |
88 | fb->pseudo_palette[regno] = ((red & 0xf800) >> 1) | | |
89 | ((green & 0xf800) >> 6) | | |
90 | ((blue & 0xf800) >> 11); | |
91 | break; | |
92 | case 16: | |
93 | fb->pseudo_palette[regno] = (red & 0xf800) | | |
94 | ((green & 0xfc00) >> 5) | | |
95 | ((blue & 0xf800) >> 11); | |
96 | break; | |
97 | case 24: | |
98 | case 32: | |
99 | fb->pseudo_palette[regno] = ((red & 0xff00) << 8) | | |
100 | (green & 0xff00) | | |
101 | ((blue & 0xff00) >> 8); | |
102 | break; | |
103 | } | |
104 | } | |
105 | } | |
106 | return 0; | |
107 | } | |
108 | ||
109 | static int intelfb_check_var(struct fb_var_screeninfo *var, | |
110 | struct fb_info *info) | |
111 | { | |
112 | struct intelfb_par *par = info->par; | |
113 | struct intel_framebuffer *intel_fb = par->intel_fb; | |
114 | struct drm_framebuffer *fb = &intel_fb->base; | |
115 | int depth; | |
116 | ||
117 | if (var->pixclock == -1 || !var->pixclock) | |
118 | return -EINVAL; | |
119 | ||
120 | /* Need to resize the fb object !!! */ | |
121 | if (var->xres > fb->width || var->yres > fb->height) { | |
122 | DRM_ERROR("Requested width/height is greater than current fb object %dx%d > %dx%d\n",var->xres,var->yres,fb->width,fb->height); | |
123 | DRM_ERROR("Need resizing code.\n"); | |
124 | return -EINVAL; | |
125 | } | |
126 | ||
127 | switch (var->bits_per_pixel) { | |
128 | case 16: | |
129 | depth = (var->green.length == 6) ? 16 : 15; | |
130 | break; | |
131 | case 32: | |
132 | depth = (var->transp.length > 0) ? 32 : 24; | |
133 | break; | |
134 | default: | |
135 | depth = var->bits_per_pixel; | |
136 | break; | |
137 | } | |
138 | ||
139 | switch (depth) { | |
140 | case 8: | |
141 | var->red.offset = 0; | |
142 | var->green.offset = 0; | |
143 | var->blue.offset = 0; | |
144 | var->red.length = 8; | |
145 | var->green.length = 8; | |
146 | var->blue.length = 8; | |
147 | var->transp.length = 0; | |
148 | var->transp.offset = 0; | |
149 | break; | |
150 | case 15: | |
151 | var->red.offset = 10; | |
152 | var->green.offset = 5; | |
153 | var->blue.offset = 0; | |
154 | var->red.length = 5; | |
155 | var->green.length = 5; | |
156 | var->blue.length = 5; | |
157 | var->transp.length = 1; | |
158 | var->transp.offset = 15; | |
159 | break; | |
160 | case 16: | |
161 | var->red.offset = 11; | |
162 | var->green.offset = 5; | |
163 | var->blue.offset = 0; | |
164 | var->red.length = 5; | |
165 | var->green.length = 6; | |
166 | var->blue.length = 5; | |
167 | var->transp.length = 0; | |
168 | var->transp.offset = 0; | |
169 | break; | |
170 | case 24: | |
171 | var->red.offset = 16; | |
172 | var->green.offset = 8; | |
173 | var->blue.offset = 0; | |
174 | var->red.length = 8; | |
175 | var->green.length = 8; | |
176 | var->blue.length = 8; | |
177 | var->transp.length = 0; | |
178 | var->transp.offset = 0; | |
179 | break; | |
180 | case 32: | |
181 | var->red.offset = 16; | |
182 | var->green.offset = 8; | |
183 | var->blue.offset = 0; | |
184 | var->red.length = 8; | |
185 | var->green.length = 8; | |
186 | var->blue.length = 8; | |
187 | var->transp.length = 8; | |
188 | var->transp.offset = 24; | |
189 | break; | |
190 | default: | |
191 | return -EINVAL; | |
192 | } | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
197 | /* this will let fbcon do the mode init */ | |
198 | /* FIXME: take mode config lock? */ | |
199 | static int intelfb_set_par(struct fb_info *info) | |
200 | { | |
201 | struct intelfb_par *par = info->par; | |
202 | struct drm_device *dev = par->dev; | |
203 | struct fb_var_screeninfo *var = &info->var; | |
204 | int i; | |
205 | ||
206 | DRM_DEBUG("%d %d\n", var->xres, var->pixclock); | |
207 | ||
208 | if (var->pixclock != -1) { | |
209 | ||
1bcbf394 | 210 | DRM_ERROR("PIXEL CLOCK SET\n"); |
79e53945 JB |
211 | return -EINVAL; |
212 | } else { | |
213 | struct drm_crtc *crtc; | |
214 | int ret; | |
215 | ||
216 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
217 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
218 | ||
219 | for (i = 0; i < par->crtc_count; i++) | |
220 | if (crtc->base.id == par->crtc_ids[i]) | |
221 | break; | |
222 | ||
223 | if (i == par->crtc_count) | |
224 | continue; | |
225 | ||
226 | if (crtc->fb == intel_crtc->mode_set.fb) { | |
227 | mutex_lock(&dev->mode_config.mutex); | |
228 | ret = crtc->funcs->set_config(&intel_crtc->mode_set); | |
229 | mutex_unlock(&dev->mode_config.mutex); | |
230 | if (ret) | |
231 | return ret; | |
232 | } | |
233 | } | |
234 | return 0; | |
235 | } | |
236 | } | |
237 | ||
238 | static int intelfb_pan_display(struct fb_var_screeninfo *var, | |
239 | struct fb_info *info) | |
240 | { | |
241 | struct intelfb_par *par = info->par; | |
242 | struct drm_device *dev = par->dev; | |
243 | struct drm_mode_set *modeset; | |
244 | struct drm_crtc *crtc; | |
245 | struct intel_crtc *intel_crtc; | |
246 | int ret = 0; | |
247 | int i; | |
248 | ||
249 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
250 | for (i = 0; i < par->crtc_count; i++) | |
251 | if (crtc->base.id == par->crtc_ids[i]) | |
252 | break; | |
253 | ||
254 | if (i == par->crtc_count) | |
255 | continue; | |
256 | ||
257 | intel_crtc = to_intel_crtc(crtc); | |
258 | modeset = &intel_crtc->mode_set; | |
259 | ||
260 | modeset->x = var->xoffset; | |
261 | modeset->y = var->yoffset; | |
262 | ||
263 | if (modeset->num_connectors) { | |
264 | mutex_lock(&dev->mode_config.mutex); | |
265 | ret = crtc->funcs->set_config(modeset); | |
266 | mutex_unlock(&dev->mode_config.mutex); | |
267 | if (!ret) { | |
268 | info->var.xoffset = var->xoffset; | |
269 | info->var.yoffset = var->yoffset; | |
270 | } | |
271 | } | |
272 | } | |
273 | ||
274 | return ret; | |
275 | } | |
276 | ||
277 | static void intelfb_on(struct fb_info *info) | |
278 | { | |
279 | struct intelfb_par *par = info->par; | |
280 | struct drm_device *dev = par->dev; | |
281 | struct drm_crtc *crtc; | |
282 | struct drm_encoder *encoder; | |
283 | int i; | |
284 | ||
285 | /* | |
286 | * For each CRTC in this fb, find all associated encoders | |
287 | * and turn them off, then turn off the CRTC. | |
288 | */ | |
289 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
290 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
291 | ||
292 | for (i = 0; i < par->crtc_count; i++) | |
293 | if (crtc->base.id == par->crtc_ids[i]) | |
294 | break; | |
295 | ||
296 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); | |
297 | ||
298 | /* Found a CRTC on this fb, now find encoders */ | |
299 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
300 | if (encoder->crtc == crtc) { | |
301 | struct drm_encoder_helper_funcs *encoder_funcs; | |
302 | encoder_funcs = encoder->helper_private; | |
303 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); | |
304 | } | |
305 | } | |
306 | } | |
307 | } | |
308 | ||
309 | static void intelfb_off(struct fb_info *info, int dpms_mode) | |
310 | { | |
311 | struct intelfb_par *par = info->par; | |
312 | struct drm_device *dev = par->dev; | |
313 | struct drm_crtc *crtc; | |
314 | struct drm_encoder *encoder; | |
315 | int i; | |
316 | ||
317 | /* | |
318 | * For each CRTC in this fb, find all associated encoders | |
319 | * and turn them off, then turn off the CRTC. | |
320 | */ | |
321 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
322 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
323 | ||
324 | for (i = 0; i < par->crtc_count; i++) | |
325 | if (crtc->base.id == par->crtc_ids[i]) | |
326 | break; | |
327 | ||
328 | /* Found a CRTC on this fb, now find encoders */ | |
329 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
330 | if (encoder->crtc == crtc) { | |
331 | struct drm_encoder_helper_funcs *encoder_funcs; | |
332 | encoder_funcs = encoder->helper_private; | |
333 | encoder_funcs->dpms(encoder, dpms_mode); | |
334 | } | |
335 | } | |
336 | if (dpms_mode == DRM_MODE_DPMS_OFF) | |
337 | crtc_funcs->dpms(crtc, dpms_mode); | |
338 | } | |
339 | } | |
340 | ||
b358d0a6 | 341 | static int intelfb_blank(int blank, struct fb_info *info) |
79e53945 JB |
342 | { |
343 | switch (blank) { | |
344 | case FB_BLANK_UNBLANK: | |
345 | intelfb_on(info); | |
346 | break; | |
347 | case FB_BLANK_NORMAL: | |
348 | intelfb_off(info, DRM_MODE_DPMS_STANDBY); | |
349 | break; | |
350 | case FB_BLANK_HSYNC_SUSPEND: | |
351 | intelfb_off(info, DRM_MODE_DPMS_STANDBY); | |
352 | break; | |
353 | case FB_BLANK_VSYNC_SUSPEND: | |
354 | intelfb_off(info, DRM_MODE_DPMS_SUSPEND); | |
355 | break; | |
356 | case FB_BLANK_POWERDOWN: | |
357 | intelfb_off(info, DRM_MODE_DPMS_OFF); | |
358 | break; | |
359 | } | |
360 | return 0; | |
361 | } | |
362 | ||
363 | static struct fb_ops intelfb_ops = { | |
364 | .owner = THIS_MODULE, | |
365 | .fb_check_var = intelfb_check_var, | |
366 | .fb_set_par = intelfb_set_par, | |
367 | .fb_setcolreg = intelfb_setcolreg, | |
368 | .fb_fillrect = cfb_fillrect, | |
369 | .fb_copyarea = cfb_copyarea, | |
370 | .fb_imageblit = cfb_imageblit, | |
371 | .fb_pan_display = intelfb_pan_display, | |
372 | .fb_blank = intelfb_blank, | |
373 | }; | |
374 | ||
375 | /** | |
376 | * Curretly it is assumed that the old framebuffer is reused. | |
377 | * | |
378 | * LOCKING | |
379 | * caller should hold the mode config lock. | |
380 | * | |
381 | */ | |
382 | int intelfb_resize(struct drm_device *dev, struct drm_crtc *crtc) | |
383 | { | |
384 | struct fb_info *info; | |
385 | struct drm_framebuffer *fb; | |
386 | struct drm_display_mode *mode = crtc->desired_mode; | |
387 | ||
388 | fb = crtc->fb; | |
389 | if (!fb) | |
390 | return 1; | |
391 | ||
392 | info = fb->fbdev; | |
393 | if (!info) | |
394 | return 1; | |
395 | ||
396 | if (!mode) | |
397 | return 1; | |
398 | ||
399 | info->var.xres = mode->hdisplay; | |
400 | info->var.right_margin = mode->hsync_start - mode->hdisplay; | |
401 | info->var.hsync_len = mode->hsync_end - mode->hsync_start; | |
402 | info->var.left_margin = mode->htotal - mode->hsync_end; | |
403 | info->var.yres = mode->vdisplay; | |
404 | info->var.lower_margin = mode->vsync_start - mode->vdisplay; | |
405 | info->var.vsync_len = mode->vsync_end - mode->vsync_start; | |
406 | info->var.upper_margin = mode->vtotal - mode->vsync_end; | |
407 | info->var.pixclock = 10000000 / mode->htotal * 1000 / mode->vtotal * 100; | |
408 | /* avoid overflow */ | |
409 | info->var.pixclock = info->var.pixclock * 1000 / mode->vrefresh; | |
410 | ||
411 | return 0; | |
412 | } | |
413 | EXPORT_SYMBOL(intelfb_resize); | |
414 | ||
415 | static struct drm_mode_set kernelfb_mode; | |
416 | ||
d1e22c6e HE |
417 | static int intelfb_panic(struct notifier_block *n, unsigned long ununsed, |
418 | void *panic_str) | |
79e53945 JB |
419 | { |
420 | DRM_ERROR("panic occurred, switching back to text console\n"); | |
421 | ||
422 | intelfb_restore(); | |
423 | return 0; | |
424 | } | |
79e53945 JB |
425 | |
426 | static struct notifier_block paniced = { | |
427 | .notifier_call = intelfb_panic, | |
428 | }; | |
429 | ||
b358d0a6 HE |
430 | static int intelfb_create(struct drm_device *dev, uint32_t fb_width, |
431 | uint32_t fb_height, uint32_t surface_width, | |
432 | uint32_t surface_height, | |
433 | struct intel_framebuffer **intel_fb_p) | |
79e53945 JB |
434 | { |
435 | struct fb_info *info; | |
436 | struct intelfb_par *par; | |
437 | struct drm_framebuffer *fb; | |
438 | struct intel_framebuffer *intel_fb; | |
439 | struct drm_mode_fb_cmd mode_cmd; | |
440 | struct drm_gem_object *fbo = NULL; | |
441 | struct drm_i915_gem_object *obj_priv; | |
442 | struct device *device = &dev->pdev->dev; | |
443 | int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1; | |
444 | ||
445 | mode_cmd.width = surface_width; | |
446 | mode_cmd.height = surface_height; | |
447 | ||
448 | mode_cmd.bpp = 32; | |
e7da40f0 | 449 | mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64); |
79e53945 JB |
450 | mode_cmd.depth = 24; |
451 | ||
452 | size = mode_cmd.pitch * mode_cmd.height; | |
453 | size = ALIGN(size, PAGE_SIZE); | |
454 | fbo = drm_gem_object_alloc(dev, size); | |
455 | if (!fbo) { | |
456 | printk(KERN_ERR "failed to allocate framebuffer\n"); | |
457 | ret = -ENOMEM; | |
458 | goto out; | |
459 | } | |
460 | obj_priv = fbo->driver_private; | |
461 | ||
462 | mutex_lock(&dev->struct_mutex); | |
463 | ||
464 | ret = i915_gem_object_pin(fbo, PAGE_SIZE); | |
465 | if (ret) { | |
466 | DRM_ERROR("failed to pin fb: %d\n", ret); | |
467 | goto out_unref; | |
468 | } | |
469 | ||
470 | /* Flush everything out, we'll be doing GTT only from now on */ | |
471 | i915_gem_object_set_to_gtt_domain(fbo, 1); | |
472 | ||
473 | ret = intel_framebuffer_create(dev, &mode_cmd, &fb, fbo); | |
474 | if (ret) { | |
475 | DRM_ERROR("failed to allocate fb.\n"); | |
b4476f52 | 476 | goto out_unpin; |
79e53945 JB |
477 | } |
478 | ||
479 | list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list); | |
480 | ||
481 | intel_fb = to_intel_framebuffer(fb); | |
482 | *intel_fb_p = intel_fb; | |
483 | ||
484 | info = framebuffer_alloc(sizeof(struct intelfb_par), device); | |
485 | if (!info) { | |
486 | ret = -ENOMEM; | |
b4476f52 | 487 | goto out_unpin; |
79e53945 JB |
488 | } |
489 | ||
490 | par = info->par; | |
491 | ||
492 | strcpy(info->fix.id, "inteldrmfb"); | |
493 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
494 | info->fix.visual = FB_VISUAL_TRUECOLOR; | |
495 | info->fix.type_aux = 0; | |
496 | info->fix.xpanstep = 1; /* doing it in hw */ | |
497 | info->fix.ypanstep = 1; /* doing it in hw */ | |
498 | info->fix.ywrapstep = 0; | |
499 | info->fix.accel = FB_ACCEL_I830; | |
500 | info->fix.type_aux = 0; | |
501 | ||
502 | info->flags = FBINFO_DEFAULT; | |
503 | ||
504 | info->fbops = &intelfb_ops; | |
505 | ||
506 | info->fix.line_length = fb->pitch; | |
507 | info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset; | |
508 | info->fix.smem_len = size; | |
509 | ||
510 | info->flags = FBINFO_DEFAULT; | |
511 | ||
512 | info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset, | |
513 | size); | |
514 | if (!info->screen_base) { | |
515 | ret = -ENOSPC; | |
b4476f52 | 516 | goto out_unpin; |
79e53945 JB |
517 | } |
518 | info->screen_size = size; | |
519 | ||
520 | // memset(info->screen_base, 0, size); | |
521 | ||
522 | info->pseudo_palette = fb->pseudo_palette; | |
523 | info->var.xres_virtual = fb->width; | |
524 | info->var.yres_virtual = fb->height; | |
525 | info->var.bits_per_pixel = fb->bits_per_pixel; | |
526 | info->var.xoffset = 0; | |
527 | info->var.yoffset = 0; | |
528 | info->var.activate = FB_ACTIVATE_NOW; | |
529 | info->var.height = -1; | |
530 | info->var.width = -1; | |
531 | ||
532 | info->var.xres = fb_width; | |
533 | info->var.yres = fb_height; | |
534 | ||
535 | /* FIXME: we really shouldn't expose mmio space at all */ | |
536 | info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar); | |
537 | info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar); | |
538 | ||
539 | info->pixmap.size = 64*1024; | |
540 | info->pixmap.buf_align = 8; | |
541 | info->pixmap.access_align = 32; | |
542 | info->pixmap.flags = FB_PIXMAP_SYSTEM; | |
543 | info->pixmap.scan_align = 1; | |
544 | ||
545 | switch(fb->depth) { | |
546 | case 8: | |
547 | info->var.red.offset = 0; | |
548 | info->var.green.offset = 0; | |
549 | info->var.blue.offset = 0; | |
550 | info->var.red.length = 8; /* 8bit DAC */ | |
551 | info->var.green.length = 8; | |
552 | info->var.blue.length = 8; | |
553 | info->var.transp.offset = 0; | |
554 | info->var.transp.length = 0; | |
555 | break; | |
556 | case 15: | |
557 | info->var.red.offset = 10; | |
558 | info->var.green.offset = 5; | |
559 | info->var.blue.offset = 0; | |
560 | info->var.red.length = 5; | |
561 | info->var.green.length = 5; | |
562 | info->var.blue.length = 5; | |
563 | info->var.transp.offset = 15; | |
564 | info->var.transp.length = 1; | |
565 | break; | |
566 | case 16: | |
567 | info->var.red.offset = 11; | |
568 | info->var.green.offset = 5; | |
569 | info->var.blue.offset = 0; | |
570 | info->var.red.length = 5; | |
571 | info->var.green.length = 6; | |
572 | info->var.blue.length = 5; | |
573 | info->var.transp.offset = 0; | |
574 | break; | |
575 | case 24: | |
576 | info->var.red.offset = 16; | |
577 | info->var.green.offset = 8; | |
578 | info->var.blue.offset = 0; | |
579 | info->var.red.length = 8; | |
580 | info->var.green.length = 8; | |
581 | info->var.blue.length = 8; | |
582 | info->var.transp.offset = 0; | |
583 | info->var.transp.length = 0; | |
584 | break; | |
585 | case 32: | |
586 | info->var.red.offset = 16; | |
587 | info->var.green.offset = 8; | |
588 | info->var.blue.offset = 0; | |
589 | info->var.red.length = 8; | |
590 | info->var.green.length = 8; | |
591 | info->var.blue.length = 8; | |
592 | info->var.transp.offset = 24; | |
593 | info->var.transp.length = 8; | |
594 | break; | |
595 | default: | |
596 | break; | |
597 | } | |
598 | ||
599 | fb->fbdev = info; | |
600 | ||
601 | par->intel_fb = intel_fb; | |
602 | par->dev = dev; | |
603 | ||
604 | /* To allow resizeing without swapping buffers */ | |
605 | printk("allocated %dx%d fb: 0x%08x, bo %p\n", intel_fb->base.width, | |
606 | intel_fb->base.height, obj_priv->gtt_offset, fbo); | |
607 | ||
608 | mutex_unlock(&dev->struct_mutex); | |
609 | return 0; | |
610 | ||
b4476f52 CW |
611 | out_unpin: |
612 | i915_gem_object_unpin(fbo); | |
79e53945 JB |
613 | out_unref: |
614 | drm_gem_object_unreference(fbo); | |
615 | mutex_unlock(&dev->struct_mutex); | |
616 | out: | |
617 | return ret; | |
618 | } | |
619 | ||
620 | static int intelfb_multi_fb_probe_crtc(struct drm_device *dev, struct drm_crtc *crtc) | |
621 | { | |
622 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
623 | struct intel_framebuffer *intel_fb; | |
624 | struct drm_framebuffer *fb; | |
625 | struct drm_connector *connector; | |
626 | struct fb_info *info; | |
627 | struct intelfb_par *par; | |
628 | struct drm_mode_set *modeset; | |
629 | unsigned int width, height; | |
630 | int new_fb = 0; | |
631 | int ret, i, conn_count; | |
632 | ||
633 | if (!drm_helper_crtc_in_use(crtc)) | |
634 | return 0; | |
635 | ||
636 | if (!crtc->desired_mode) | |
637 | return 0; | |
638 | ||
639 | width = crtc->desired_mode->hdisplay; | |
640 | height = crtc->desired_mode->vdisplay; | |
641 | ||
642 | /* is there an fb bound to this crtc already */ | |
643 | if (!intel_crtc->mode_set.fb) { | |
644 | ret = intelfb_create(dev, width, height, width, height, &intel_fb); | |
645 | if (ret) | |
646 | return -EINVAL; | |
647 | new_fb = 1; | |
648 | } else { | |
649 | fb = intel_crtc->mode_set.fb; | |
650 | intel_fb = to_intel_framebuffer(fb); | |
651 | if ((intel_fb->base.width < width) || (intel_fb->base.height < height)) | |
652 | return -EINVAL; | |
653 | } | |
654 | ||
655 | info = intel_fb->base.fbdev; | |
656 | par = info->par; | |
657 | ||
658 | modeset = &intel_crtc->mode_set; | |
659 | modeset->fb = &intel_fb->base; | |
660 | conn_count = 0; | |
661 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
662 | if (connector->encoder) | |
663 | if (connector->encoder->crtc == modeset->crtc) { | |
664 | modeset->connectors[conn_count] = connector; | |
665 | conn_count++; | |
666 | if (conn_count > INTELFB_CONN_LIMIT) | |
667 | BUG(); | |
668 | } | |
669 | } | |
670 | ||
671 | for (i = conn_count; i < INTELFB_CONN_LIMIT; i++) | |
672 | modeset->connectors[i] = NULL; | |
673 | ||
674 | par->crtc_ids[0] = crtc->base.id; | |
675 | ||
676 | modeset->num_connectors = conn_count; | |
677 | if (modeset->mode != modeset->crtc->desired_mode) | |
678 | modeset->mode = modeset->crtc->desired_mode; | |
679 | ||
680 | par->crtc_count = 1; | |
681 | ||
682 | if (new_fb) { | |
683 | info->var.pixclock = -1; | |
684 | if (register_framebuffer(info) < 0) | |
685 | return -EINVAL; | |
686 | } else | |
687 | intelfb_set_par(info); | |
688 | ||
689 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
690 | info->fix.id); | |
691 | ||
692 | /* Switch back to kernel console on panic */ | |
693 | kernelfb_mode = *modeset; | |
694 | atomic_notifier_chain_register(&panic_notifier_list, &paniced); | |
695 | printk(KERN_INFO "registered panic notifier\n"); | |
696 | ||
697 | return 0; | |
698 | } | |
699 | ||
700 | static int intelfb_multi_fb_probe(struct drm_device *dev) | |
701 | { | |
702 | ||
703 | struct drm_crtc *crtc; | |
704 | int ret = 0; | |
705 | ||
706 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
707 | ret = intelfb_multi_fb_probe_crtc(dev, crtc); | |
708 | if (ret) | |
709 | return ret; | |
710 | } | |
711 | return ret; | |
712 | } | |
713 | ||
714 | static int intelfb_single_fb_probe(struct drm_device *dev) | |
715 | { | |
716 | struct drm_crtc *crtc; | |
717 | struct drm_connector *connector; | |
718 | unsigned int fb_width = (unsigned)-1, fb_height = (unsigned)-1; | |
719 | unsigned int surface_width = 0, surface_height = 0; | |
720 | int new_fb = 0; | |
721 | int crtc_count = 0; | |
722 | int ret, i, conn_count = 0; | |
723 | struct intel_framebuffer *intel_fb; | |
724 | struct fb_info *info; | |
725 | struct intelfb_par *par; | |
726 | struct drm_mode_set *modeset = NULL; | |
727 | ||
728 | DRM_DEBUG("\n"); | |
729 | ||
730 | /* Get a count of crtcs now in use and new min/maxes width/heights */ | |
731 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
732 | if (!drm_helper_crtc_in_use(crtc)) | |
733 | continue; | |
734 | ||
735 | crtc_count++; | |
736 | if (!crtc->desired_mode) | |
737 | continue; | |
738 | ||
739 | /* Smallest mode determines console size... */ | |
740 | if (crtc->desired_mode->hdisplay < fb_width) | |
741 | fb_width = crtc->desired_mode->hdisplay; | |
742 | ||
743 | if (crtc->desired_mode->vdisplay < fb_height) | |
744 | fb_height = crtc->desired_mode->vdisplay; | |
745 | ||
746 | /* ... but largest for memory allocation dimensions */ | |
747 | if (crtc->desired_mode->hdisplay > surface_width) | |
748 | surface_width = crtc->desired_mode->hdisplay; | |
749 | ||
750 | if (crtc->desired_mode->vdisplay > surface_height) | |
751 | surface_height = crtc->desired_mode->vdisplay; | |
752 | } | |
753 | ||
754 | if (crtc_count == 0 || fb_width == -1 || fb_height == -1) { | |
755 | /* hmm everyone went away - assume VGA cable just fell out | |
756 | and will come back later. */ | |
757 | DRM_DEBUG("no CRTCs available?\n"); | |
758 | return 0; | |
759 | } | |
760 | ||
761 | //fail | |
762 | /* Find the fb for our new config */ | |
763 | if (list_empty(&dev->mode_config.fb_kernel_list)) { | |
764 | DRM_DEBUG("creating new fb (console size %dx%d, " | |
765 | "buffer size %dx%d)\n", fb_width, fb_height, | |
766 | surface_width, surface_height); | |
767 | ret = intelfb_create(dev, fb_width, fb_height, surface_width, | |
768 | surface_height, &intel_fb); | |
769 | if (ret) | |
770 | return -EINVAL; | |
771 | new_fb = 1; | |
772 | } else { | |
773 | struct drm_framebuffer *fb; | |
774 | ||
775 | fb = list_first_entry(&dev->mode_config.fb_kernel_list, | |
776 | struct drm_framebuffer, filp_head); | |
777 | intel_fb = to_intel_framebuffer(fb); | |
778 | ||
779 | /* if someone hotplugs something bigger than we have already | |
780 | * allocated, we are pwned. As really we can't resize an | |
781 | * fbdev that is in the wild currently due to fbdev not really | |
782 | * being designed for the lower layers moving stuff around | |
783 | * under it. | |
784 | * - so in the grand style of things - punt. | |
785 | */ | |
786 | if ((fb->width < surface_width) || | |
787 | (fb->height < surface_height)) { | |
788 | DRM_ERROR("fb not large enough for console\n"); | |
789 | return -EINVAL; | |
790 | } | |
791 | } | |
792 | // fail | |
793 | ||
794 | info = intel_fb->base.fbdev; | |
795 | par = info->par; | |
796 | ||
797 | crtc_count = 0; | |
798 | /* | |
799 | * For each CRTC, set up the connector list for the CRTC's mode | |
800 | * set configuration. | |
801 | */ | |
802 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
803 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
804 | ||
805 | modeset = &intel_crtc->mode_set; | |
806 | modeset->fb = &intel_fb->base; | |
807 | conn_count = 0; | |
808 | list_for_each_entry(connector, &dev->mode_config.connector_list, | |
809 | head) { | |
810 | if (!connector->encoder) | |
811 | continue; | |
812 | ||
813 | if(connector->encoder->crtc == modeset->crtc) { | |
814 | modeset->connectors[conn_count++] = connector; | |
815 | if (conn_count > INTELFB_CONN_LIMIT) | |
816 | BUG(); | |
817 | } | |
818 | } | |
819 | ||
820 | /* Zero out remaining connector pointers */ | |
821 | for (i = conn_count; i < INTELFB_CONN_LIMIT; i++) | |
822 | modeset->connectors[i] = NULL; | |
823 | ||
824 | par->crtc_ids[crtc_count++] = crtc->base.id; | |
825 | ||
826 | modeset->num_connectors = conn_count; | |
827 | if (modeset->mode != modeset->crtc->desired_mode) | |
828 | modeset->mode = modeset->crtc->desired_mode; | |
829 | } | |
830 | par->crtc_count = crtc_count; | |
831 | ||
832 | if (new_fb) { | |
833 | info->var.pixclock = -1; | |
834 | if (register_framebuffer(info) < 0) | |
835 | return -EINVAL; | |
836 | } else | |
837 | intelfb_set_par(info); | |
838 | ||
839 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
840 | info->fix.id); | |
841 | ||
842 | /* Switch back to kernel console on panic */ | |
843 | kernelfb_mode = *modeset; | |
844 | atomic_notifier_chain_register(&panic_notifier_list, &paniced); | |
845 | printk(KERN_INFO "registered panic notifier\n"); | |
846 | ||
847 | return 0; | |
848 | } | |
849 | ||
850 | /** | |
851 | * intelfb_restore - restore the framebuffer console (kernel) config | |
852 | * | |
853 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. | |
854 | */ | |
855 | void intelfb_restore(void) | |
856 | { | |
857 | drm_crtc_helper_set_config(&kernelfb_mode); | |
858 | } | |
859 | ||
b66d18dd JB |
860 | static void intelfb_restore_work_fn(struct work_struct *ignored) |
861 | { | |
862 | intelfb_restore(); | |
863 | } | |
864 | static DECLARE_WORK(intelfb_restore_work, intelfb_restore_work_fn); | |
865 | ||
79e53945 JB |
866 | static void intelfb_sysrq(int dummy1, struct tty_struct *dummy3) |
867 | { | |
b66d18dd | 868 | schedule_work(&intelfb_restore_work); |
79e53945 JB |
869 | } |
870 | ||
871 | static struct sysrq_key_op sysrq_intelfb_restore_op = { | |
872 | .handler = intelfb_sysrq, | |
364b5b7b | 873 | .help_msg = "force-fb(V)", |
5b40f871 | 874 | .action_msg = "Restore framebuffer console", |
79e53945 JB |
875 | }; |
876 | ||
877 | int intelfb_probe(struct drm_device *dev) | |
878 | { | |
879 | int ret; | |
880 | ||
881 | DRM_DEBUG("\n"); | |
882 | ||
883 | /* something has changed in the lower levels of hell - deal with it | |
884 | here */ | |
885 | ||
886 | /* two modes : a) 1 fb to rule all crtcs. | |
887 | b) one fb per crtc. | |
888 | two actions 1) new connected device | |
889 | 2) device removed. | |
890 | case a/1 : if the fb surface isn't big enough - resize the surface fb. | |
891 | if the fb size isn't big enough - resize fb into surface. | |
892 | if everything big enough configure the new crtc/etc. | |
893 | case a/2 : undo the configuration | |
894 | possibly resize down the fb to fit the new configuration. | |
895 | case b/1 : see if it is on a new crtc - setup a new fb and add it. | |
896 | case b/2 : teardown the new fb. | |
897 | */ | |
898 | ||
899 | /* mode a first */ | |
900 | /* search for an fb */ | |
901 | if (i915_fbpercrtc == 1) { | |
902 | ret = intelfb_multi_fb_probe(dev); | |
903 | } else { | |
904 | ret = intelfb_single_fb_probe(dev); | |
905 | } | |
906 | ||
364b5b7b | 907 | register_sysrq_key('v', &sysrq_intelfb_restore_op); |
79e53945 JB |
908 | |
909 | return ret; | |
910 | } | |
911 | EXPORT_SYMBOL(intelfb_probe); | |
912 | ||
913 | int intelfb_remove(struct drm_device *dev, struct drm_framebuffer *fb) | |
914 | { | |
915 | struct fb_info *info; | |
916 | ||
917 | if (!fb) | |
918 | return -EINVAL; | |
919 | ||
920 | info = fb->fbdev; | |
921 | ||
922 | if (info) { | |
923 | unregister_framebuffer(info); | |
924 | iounmap(info->screen_base); | |
925 | framebuffer_release(info); | |
926 | } | |
927 | ||
928 | atomic_notifier_chain_unregister(&panic_notifier_list, &paniced); | |
929 | memset(&kernelfb_mode, 0, sizeof(struct drm_mode_set)); | |
930 | return 0; | |
931 | } | |
932 | EXPORT_SYMBOL(intelfb_remove); | |
933 | MODULE_LICENSE("GPL and additional rights"); |