Commit | Line | Data |
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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 | ||
d1d70677 | 27 | #include <linux/async.h> |
79e53945 JB |
28 | #include <linux/module.h> |
29 | #include <linux/kernel.h> | |
82e3b8c1 | 30 | #include <linux/console.h> |
79e53945 JB |
31 | #include <linux/errno.h> |
32 | #include <linux/string.h> | |
33 | #include <linux/mm.h> | |
34 | #include <linux/tty.h> | |
79e53945 JB |
35 | #include <linux/sysrq.h> |
36 | #include <linux/delay.h> | |
37 | #include <linux/fb.h> | |
38 | #include <linux/init.h> | |
6a9ee8af | 39 | #include <linux/vga_switcheroo.h> |
79e53945 | 40 | |
760285e7 DH |
41 | #include <drm/drmP.h> |
42 | #include <drm/drm_crtc.h> | |
43 | #include <drm/drm_fb_helper.h> | |
79e53945 | 44 | #include "intel_drv.h" |
760285e7 | 45 | #include <drm/i915_drm.h> |
79e53945 JB |
46 | #include "i915_drv.h" |
47 | ||
e991077e DV |
48 | static int intel_fbdev_set_par(struct fb_info *info) |
49 | { | |
50 | struct drm_fb_helper *fb_helper = info->par; | |
51 | struct intel_fbdev *ifbdev = | |
52 | container_of(fb_helper, struct intel_fbdev, helper); | |
53 | int ret; | |
54 | ||
55 | ret = drm_fb_helper_set_par(info); | |
56 | ||
57 | if (ret == 0) { | |
58 | /* | |
59 | * FIXME: fbdev presumes that all callbacks also work from | |
60 | * atomic contexts and relies on that for emergency oops | |
61 | * printing. KMS totally doesn't do that and the locking here is | |
62 | * by far not the only place this goes wrong. Ignore this for | |
63 | * now until we solve this for real. | |
64 | */ | |
65 | mutex_lock(&fb_helper->dev->struct_mutex); | |
aba6da3e | 66 | intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); |
e991077e DV |
67 | mutex_unlock(&fb_helper->dev->struct_mutex); |
68 | } | |
69 | ||
70 | return ret; | |
71 | } | |
72 | ||
03e515f7 RV |
73 | static int intel_fbdev_blank(int blank, struct fb_info *info) |
74 | { | |
75 | struct drm_fb_helper *fb_helper = info->par; | |
76 | struct intel_fbdev *ifbdev = | |
77 | container_of(fb_helper, struct intel_fbdev, helper); | |
78 | int ret; | |
79 | ||
80 | ret = drm_fb_helper_blank(blank, info); | |
81 | ||
82 | if (ret == 0) { | |
83 | /* | |
84 | * FIXME: fbdev presumes that all callbacks also work from | |
85 | * atomic contexts and relies on that for emergency oops | |
86 | * printing. KMS totally doesn't do that and the locking here is | |
87 | * by far not the only place this goes wrong. Ignore this for | |
88 | * now until we solve this for real. | |
89 | */ | |
90 | mutex_lock(&fb_helper->dev->struct_mutex); | |
77a0d1ca | 91 | intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); |
03e515f7 RV |
92 | mutex_unlock(&fb_helper->dev->struct_mutex); |
93 | } | |
94 | ||
95 | return ret; | |
96 | } | |
97 | ||
d9a946b5 RV |
98 | static int intel_fbdev_pan_display(struct fb_var_screeninfo *var, |
99 | struct fb_info *info) | |
100 | { | |
101 | struct drm_fb_helper *fb_helper = info->par; | |
102 | struct intel_fbdev *ifbdev = | |
103 | container_of(fb_helper, struct intel_fbdev, helper); | |
104 | ||
105 | int ret; | |
106 | ret = drm_fb_helper_pan_display(var, info); | |
107 | ||
108 | if (ret == 0) { | |
109 | /* | |
110 | * FIXME: fbdev presumes that all callbacks also work from | |
111 | * atomic contexts and relies on that for emergency oops | |
112 | * printing. KMS totally doesn't do that and the locking here is | |
113 | * by far not the only place this goes wrong. Ignore this for | |
114 | * now until we solve this for real. | |
115 | */ | |
116 | mutex_lock(&fb_helper->dev->struct_mutex); | |
77a0d1ca | 117 | intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); |
d9a946b5 RV |
118 | mutex_unlock(&fb_helper->dev->struct_mutex); |
119 | } | |
120 | ||
121 | return ret; | |
122 | } | |
123 | ||
79e53945 JB |
124 | static struct fb_ops intelfb_ops = { |
125 | .owner = THIS_MODULE, | |
785b93ef | 126 | .fb_check_var = drm_fb_helper_check_var, |
e991077e | 127 | .fb_set_par = intel_fbdev_set_par, |
79e53945 JB |
128 | .fb_fillrect = cfb_fillrect, |
129 | .fb_copyarea = cfb_copyarea, | |
130 | .fb_imageblit = cfb_imageblit, | |
d9a946b5 | 131 | .fb_pan_display = intel_fbdev_pan_display, |
03e515f7 | 132 | .fb_blank = intel_fbdev_blank, |
068143d3 | 133 | .fb_setcmap = drm_fb_helper_setcmap, |
81255565 JB |
134 | .fb_debug_enter = drm_fb_helper_debug_enter, |
135 | .fb_debug_leave = drm_fb_helper_debug_leave, | |
79e53945 JB |
136 | }; |
137 | ||
8b4f49e0 JB |
138 | static int intelfb_alloc(struct drm_fb_helper *helper, |
139 | struct drm_fb_helper_surface_size *sizes) | |
79e53945 | 140 | { |
3430824b VS |
141 | struct intel_fbdev *ifbdev = |
142 | container_of(helper, struct intel_fbdev, helper); | |
a8bb6818 | 143 | struct drm_framebuffer *fb; |
3430824b | 144 | struct drm_device *dev = helper->dev; |
3a7f2f6a | 145 | struct drm_mode_fb_cmd2 mode_cmd = {}; |
05394f39 | 146 | struct drm_i915_gem_object *obj; |
57084d05 | 147 | int size, ret; |
79e53945 | 148 | |
b8c00ac5 | 149 | /* we don't do packed 24bpp */ |
38651674 DA |
150 | if (sizes->surface_bpp == 24) |
151 | sizes->surface_bpp = 32; | |
b8c00ac5 | 152 | |
38651674 DA |
153 | mode_cmd.width = sizes->surface_width; |
154 | mode_cmd.height = sizes->surface_height; | |
79e53945 | 155 | |
de45eaf7 PZ |
156 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * |
157 | DIV_ROUND_UP(sizes->surface_bpp, 8), 64); | |
308e5bcb JB |
158 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, |
159 | sizes->surface_depth); | |
79e53945 | 160 | |
308e5bcb | 161 | size = mode_cmd.pitches[0] * mode_cmd.height; |
1267a26b | 162 | size = PAGE_ALIGN(size); |
0ffb0ff2 CW |
163 | obj = i915_gem_object_create_stolen(dev, size); |
164 | if (obj == NULL) | |
165 | obj = i915_gem_alloc_object(dev, size); | |
05394f39 | 166 | if (!obj) { |
1ae8c0a5 | 167 | DRM_ERROR("failed to allocate framebuffer\n"); |
79e53945 JB |
168 | ret = -ENOMEM; |
169 | goto out; | |
170 | } | |
79e53945 | 171 | |
a8bb6818 DV |
172 | fb = __intel_framebuffer_create(dev, &mode_cmd, obj); |
173 | if (IS_ERR(fb)) { | |
174 | ret = PTR_ERR(fb); | |
850c4cdc TU |
175 | goto out_unref; |
176 | } | |
177 | ||
178 | /* Flush everything out, we'll be doing GTT only from now on */ | |
91af127f | 179 | ret = intel_pin_and_fence_fb_obj(NULL, fb, NULL, NULL, NULL); |
850c4cdc TU |
180 | if (ret) { |
181 | DRM_ERROR("failed to pin obj: %d\n", ret); | |
182 | goto out_fb; | |
a8bb6818 DV |
183 | } |
184 | ||
185 | ifbdev->fb = to_intel_framebuffer(fb); | |
8b4f49e0 JB |
186 | |
187 | return 0; | |
188 | ||
850c4cdc TU |
189 | out_fb: |
190 | drm_framebuffer_remove(fb); | |
8b4f49e0 JB |
191 | out_unref: |
192 | drm_gem_object_unreference(&obj->base); | |
193 | out: | |
194 | return ret; | |
195 | } | |
196 | ||
197 | static int intelfb_create(struct drm_fb_helper *helper, | |
198 | struct drm_fb_helper_surface_size *sizes) | |
199 | { | |
200 | struct intel_fbdev *ifbdev = | |
201 | container_of(helper, struct intel_fbdev, helper); | |
8bcd4553 | 202 | struct intel_framebuffer *intel_fb = ifbdev->fb; |
8b4f49e0 JB |
203 | struct drm_device *dev = helper->dev; |
204 | struct drm_i915_private *dev_priv = dev->dev_private; | |
205 | struct fb_info *info; | |
206 | struct drm_framebuffer *fb; | |
207 | struct drm_i915_gem_object *obj; | |
208 | int size, ret; | |
d978ef14 | 209 | bool prealloc = false; |
8b4f49e0 JB |
210 | |
211 | mutex_lock(&dev->struct_mutex); | |
212 | ||
edd586fe CW |
213 | if (intel_fb && |
214 | (sizes->fb_width > intel_fb->base.width || | |
215 | sizes->fb_height > intel_fb->base.height)) { | |
216 | DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d)," | |
217 | " releasing it\n", | |
218 | intel_fb->base.width, intel_fb->base.height, | |
219 | sizes->fb_width, sizes->fb_height); | |
220 | drm_framebuffer_unreference(&intel_fb->base); | |
221 | intel_fb = ifbdev->fb = NULL; | |
222 | } | |
8bcd4553 | 223 | if (!intel_fb || WARN_ON(!intel_fb->obj)) { |
48e92120 | 224 | DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n"); |
8b4f49e0 JB |
225 | ret = intelfb_alloc(helper, sizes); |
226 | if (ret) | |
227 | goto out_unlock; | |
8bcd4553 | 228 | intel_fb = ifbdev->fb; |
8b4f49e0 | 229 | } else { |
48e92120 | 230 | DRM_DEBUG_KMS("re-using BIOS fb\n"); |
d978ef14 | 231 | prealloc = true; |
8b4f49e0 JB |
232 | sizes->fb_width = intel_fb->base.width; |
233 | sizes->fb_height = intel_fb->base.height; | |
234 | } | |
235 | ||
236 | obj = intel_fb->obj; | |
237 | size = obj->base.size; | |
238 | ||
239 | info = framebuffer_alloc(0, &dev->pdev->dev); | |
79e53945 JB |
240 | if (!info) { |
241 | ret = -ENOMEM; | |
b4476f52 | 242 | goto out_unpin; |
79e53945 JB |
243 | } |
244 | ||
3430824b | 245 | info->par = helper; |
79e53945 | 246 | |
8bcd4553 | 247 | fb = &ifbdev->fb->base; |
79e53945 | 248 | |
38651674 DA |
249 | ifbdev->helper.fb = fb; |
250 | ifbdev->helper.fbdev = info; | |
785b93ef | 251 | |
79e53945 | 252 | strcpy(info->fix.id, "inteldrmfb"); |
79e53945 | 253 | |
8fd4bd22 | 254 | info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; |
79e53945 JB |
255 | info->fbops = &intelfb_ops; |
256 | ||
35c3047a CW |
257 | ret = fb_alloc_cmap(&info->cmap, 256, 0); |
258 | if (ret) { | |
259 | ret = -ENOMEM; | |
260 | goto out_unpin; | |
261 | } | |
4410f391 | 262 | /* setup aperture base/size for vesafb takeover */ |
1471ca9a MS |
263 | info->apertures = alloc_apertures(1); |
264 | if (!info->apertures) { | |
265 | ret = -ENOMEM; | |
266 | goto out_unpin; | |
267 | } | |
268 | info->apertures->ranges[0].base = dev->mode_config.fb_base; | |
93d18799 | 269 | info->apertures->ranges[0].size = dev_priv->gtt.mappable_end; |
4410f391 | 270 | |
f343c5f6 | 271 | info->fix.smem_start = dev->mode_config.fb_base + i915_gem_obj_ggtt_offset(obj); |
79e53945 JB |
272 | info->fix.smem_len = size; |
273 | ||
dd2757f8 | 274 | info->screen_base = |
f343c5f6 | 275 | ioremap_wc(dev_priv->gtt.mappable_base + i915_gem_obj_ggtt_offset(obj), |
dd2757f8 | 276 | size); |
79e53945 JB |
277 | if (!info->screen_base) { |
278 | ret = -ENOSPC; | |
b4476f52 | 279 | goto out_unpin; |
79e53945 JB |
280 | } |
281 | info->screen_size = size; | |
282 | ||
24576d23 JB |
283 | /* This driver doesn't need a VT switch to restore the mode on resume */ |
284 | info->skip_vt_switch = true; | |
285 | ||
01f2c773 | 286 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
38651674 | 287 | drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height); |
79e53945 | 288 | |
88afe715 CW |
289 | /* If the object is shmemfs backed, it will have given us zeroed pages. |
290 | * If the object is stolen however, it will be full of whatever | |
291 | * garbage was left in there. | |
292 | */ | |
d978ef14 | 293 | if (ifbdev->fb->obj->stolen && !prealloc) |
88afe715 CW |
294 | memset_io(info->screen_base, 0, info->screen_size); |
295 | ||
fb2a99e1 | 296 | /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ |
79e53945 | 297 | |
f343c5f6 | 298 | DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08lx, bo %p\n", |
8be48d92 | 299 | fb->width, fb->height, |
f343c5f6 | 300 | i915_gem_obj_ggtt_offset(obj), obj); |
79e53945 JB |
301 | |
302 | mutex_unlock(&dev->struct_mutex); | |
6a9ee8af | 303 | vga_switcheroo_client_fb_set(dev->pdev, info); |
79e53945 JB |
304 | return 0; |
305 | ||
b4476f52 | 306 | out_unpin: |
d7f46fc4 | 307 | i915_gem_object_ggtt_unpin(obj); |
05394f39 | 308 | drm_gem_object_unreference(&obj->base); |
8b4f49e0 | 309 | out_unlock: |
79e53945 | 310 | mutex_unlock(&dev->struct_mutex); |
79e53945 JB |
311 | return ret; |
312 | } | |
313 | ||
67437680 PZ |
314 | /** Sets the color ramps on behalf of RandR */ |
315 | static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, | |
316 | u16 blue, int regno) | |
317 | { | |
318 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
319 | ||
320 | intel_crtc->lut_r[regno] = red >> 8; | |
321 | intel_crtc->lut_g[regno] = green >> 8; | |
322 | intel_crtc->lut_b[regno] = blue >> 8; | |
323 | } | |
324 | ||
325 | static void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, | |
326 | u16 *blue, int regno) | |
327 | { | |
328 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
329 | ||
330 | *red = intel_crtc->lut_r[regno] << 8; | |
331 | *green = intel_crtc->lut_g[regno] << 8; | |
332 | *blue = intel_crtc->lut_b[regno] << 8; | |
333 | } | |
334 | ||
eb1bfe80 JB |
335 | static struct drm_fb_helper_crtc * |
336 | intel_fb_helper_crtc(struct drm_fb_helper *fb_helper, struct drm_crtc *crtc) | |
337 | { | |
338 | int i; | |
339 | ||
340 | for (i = 0; i < fb_helper->crtc_count; i++) | |
341 | if (fb_helper->crtc_info[i].mode_set.crtc == crtc) | |
342 | return &fb_helper->crtc_info[i]; | |
343 | ||
344 | return NULL; | |
345 | } | |
346 | ||
347 | /* | |
348 | * Try to read the BIOS display configuration and use it for the initial | |
349 | * fb configuration. | |
350 | * | |
351 | * The BIOS or boot loader will generally create an initial display | |
352 | * configuration for us that includes some set of active pipes and displays. | |
353 | * This routine tries to figure out which pipes and connectors are active | |
354 | * and stuffs them into the crtcs and modes array given to us by the | |
355 | * drm_fb_helper code. | |
356 | * | |
357 | * The overall sequence is: | |
358 | * intel_fbdev_init - from driver load | |
359 | * intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data | |
360 | * drm_fb_helper_init - build fb helper structs | |
361 | * drm_fb_helper_single_add_all_connectors - more fb helper structs | |
362 | * intel_fbdev_initial_config - apply the config | |
363 | * drm_fb_helper_initial_config - call ->probe then register_framebuffer() | |
364 | * drm_setup_crtcs - build crtc config for fbdev | |
365 | * intel_fb_initial_config - find active connectors etc | |
366 | * drm_fb_helper_single_fb_probe - set up fbdev | |
367 | * intelfb_create - re-use or alloc fb, build out fbdev structs | |
368 | * | |
369 | * Note that we don't make special consideration whether we could actually | |
370 | * switch to the selected modes without a full modeset. E.g. when the display | |
371 | * is in VGA mode we need to recalculate watermarks and set a new high-res | |
372 | * framebuffer anyway. | |
373 | */ | |
374 | static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper, | |
375 | struct drm_fb_helper_crtc **crtcs, | |
376 | struct drm_display_mode **modes, | |
b0ee9e7f | 377 | struct drm_fb_offset *offsets, |
eb1bfe80 JB |
378 | bool *enabled, int width, int height) |
379 | { | |
02f5eebb | 380 | struct drm_device *dev = fb_helper->dev; |
eb1bfe80 | 381 | int i, j; |
02f5eebb | 382 | bool *save_enabled; |
7c2bb531 | 383 | bool fallback = true; |
7e696e4c DV |
384 | int num_connectors_enabled = 0; |
385 | int num_connectors_detected = 0; | |
b0ee9e7f DA |
386 | uint64_t conn_configured = 0, mask; |
387 | int pass = 0; | |
02f5eebb JB |
388 | |
389 | save_enabled = kcalloc(dev->mode_config.num_connector, sizeof(bool), | |
390 | GFP_KERNEL); | |
391 | if (!save_enabled) | |
392 | return false; | |
393 | ||
394 | memcpy(save_enabled, enabled, dev->mode_config.num_connector); | |
b0ee9e7f DA |
395 | mask = (1 << fb_helper->connector_count) - 1; |
396 | retry: | |
eb1bfe80 JB |
397 | for (i = 0; i < fb_helper->connector_count; i++) { |
398 | struct drm_fb_helper_connector *fb_conn; | |
399 | struct drm_connector *connector; | |
400 | struct drm_encoder *encoder; | |
401 | struct drm_fb_helper_crtc *new_crtc; | |
402 | ||
403 | fb_conn = fb_helper->connector_info[i]; | |
404 | connector = fb_conn->connector; | |
7e696e4c | 405 | |
b0ee9e7f DA |
406 | if (conn_configured & (1 << i)) |
407 | continue; | |
408 | ||
409 | if (pass == 0 && !connector->has_tile) | |
410 | continue; | |
411 | ||
7e696e4c DV |
412 | if (connector->status == connector_status_connected) |
413 | num_connectors_detected++; | |
414 | ||
eb1bfe80 | 415 | if (!enabled[i]) { |
c0c97622 | 416 | DRM_DEBUG_KMS("connector %s not enabled, skipping\n", |
c23cc417 | 417 | connector->name); |
b0ee9e7f | 418 | conn_configured |= (1 << i); |
eb1bfe80 JB |
419 | continue; |
420 | } | |
421 | ||
d84a0f32 CW |
422 | if (connector->force == DRM_FORCE_OFF) { |
423 | DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n", | |
424 | connector->name); | |
425 | enabled[i] = false; | |
426 | continue; | |
427 | } | |
428 | ||
eb1bfe80 JB |
429 | encoder = connector->encoder; |
430 | if (!encoder || WARN_ON(!encoder->crtc)) { | |
d84a0f32 CW |
431 | if (connector->force > DRM_FORCE_OFF) |
432 | goto bail; | |
433 | ||
c0c97622 | 434 | DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n", |
c23cc417 | 435 | connector->name); |
eb1bfe80 | 436 | enabled[i] = false; |
b0ee9e7f | 437 | conn_configured |= (1 << i); |
eb1bfe80 JB |
438 | continue; |
439 | } | |
440 | ||
7e696e4c DV |
441 | num_connectors_enabled++; |
442 | ||
eb1bfe80 JB |
443 | new_crtc = intel_fb_helper_crtc(fb_helper, encoder->crtc); |
444 | ||
445 | /* | |
446 | * Make sure we're not trying to drive multiple connectors | |
447 | * with a single CRTC, since our cloning support may not | |
448 | * match the BIOS. | |
449 | */ | |
450 | for (j = 0; j < fb_helper->connector_count; j++) { | |
02f5eebb | 451 | if (crtcs[j] == new_crtc) { |
7e696e4c | 452 | DRM_DEBUG_KMS("fallback: cloned configuration\n"); |
d84a0f32 | 453 | goto bail; |
02f5eebb | 454 | } |
eb1bfe80 JB |
455 | } |
456 | ||
c0c97622 | 457 | DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n", |
c23cc417 | 458 | connector->name); |
eb1bfe80 JB |
459 | |
460 | /* go for command line mode first */ | |
461 | modes[i] = drm_pick_cmdline_mode(fb_conn, width, height); | |
462 | ||
463 | /* try for preferred next */ | |
464 | if (!modes[i]) { | |
b0ee9e7f DA |
465 | DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n", |
466 | connector->name, connector->has_tile); | |
eb1bfe80 JB |
467 | modes[i] = drm_has_preferred_mode(fb_conn, width, |
468 | height); | |
469 | } | |
470 | ||
afba0b5a CW |
471 | /* No preferred mode marked by the EDID? Are there any modes? */ |
472 | if (!modes[i] && !list_empty(&connector->modes)) { | |
473 | DRM_DEBUG_KMS("using first mode listed on connector %s\n", | |
8d4ad9d4 | 474 | connector->name); |
afba0b5a CW |
475 | modes[i] = list_first_entry(&connector->modes, |
476 | struct drm_display_mode, | |
477 | head); | |
478 | } | |
479 | ||
eb1bfe80 JB |
480 | /* last resort: use current mode */ |
481 | if (!modes[i]) { | |
482 | /* | |
483 | * IMPORTANT: We want to use the adjusted mode (i.e. | |
484 | * after the panel fitter upscaling) as the initial | |
485 | * config, not the input mode, which is what crtc->mode | |
486 | * usually contains. But since our current fastboot | |
487 | * code puts a mode derived from the post-pfit timings | |
488 | * into crtc->mode this works out correctly. We don't | |
489 | * use hwmode anywhere right now, so use it for this | |
490 | * since the fb helper layer wants a pointer to | |
491 | * something we own. | |
492 | */ | |
c0c97622 | 493 | DRM_DEBUG_KMS("looking for current mode on connector %s\n", |
c23cc417 | 494 | connector->name); |
eb1bfe80 | 495 | intel_mode_from_pipe_config(&encoder->crtc->hwmode, |
6e3c9717 | 496 | to_intel_crtc(encoder->crtc)->config); |
eb1bfe80 JB |
497 | modes[i] = &encoder->crtc->hwmode; |
498 | } | |
499 | crtcs[i] = new_crtc; | |
500 | ||
fdaf66de | 501 | DRM_DEBUG_KMS("connector %s on pipe %c [CRTC:%d]: %dx%d%s\n", |
c23cc417 | 502 | connector->name, |
c0c97622 | 503 | pipe_name(to_intel_crtc(encoder->crtc)->pipe), |
eb1bfe80 | 504 | encoder->crtc->base.id, |
c0c97622 CW |
505 | modes[i]->hdisplay, modes[i]->vdisplay, |
506 | modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" :""); | |
02f5eebb | 507 | |
7c2bb531 | 508 | fallback = false; |
b0ee9e7f DA |
509 | conn_configured |= (1 << i); |
510 | } | |
511 | ||
512 | if ((conn_configured & mask) != mask) { | |
513 | pass++; | |
514 | goto retry; | |
02f5eebb JB |
515 | } |
516 | ||
7e696e4c DV |
517 | /* |
518 | * If the BIOS didn't enable everything it could, fall back to have the | |
519 | * same user experiencing of lighting up as much as possible like the | |
520 | * fbdev helper library. | |
521 | */ | |
522 | if (num_connectors_enabled != num_connectors_detected && | |
523 | num_connectors_enabled < INTEL_INFO(dev)->num_pipes) { | |
524 | DRM_DEBUG_KMS("fallback: Not all outputs enabled\n"); | |
525 | DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled, | |
526 | num_connectors_detected); | |
527 | fallback = true; | |
528 | } | |
529 | ||
7c2bb531 | 530 | if (fallback) { |
d84a0f32 | 531 | bail: |
7e696e4c | 532 | DRM_DEBUG_KMS("Not using firmware configuration\n"); |
02f5eebb JB |
533 | memcpy(enabled, save_enabled, dev->mode_config.num_connector); |
534 | kfree(save_enabled); | |
535 | return false; | |
eb1bfe80 JB |
536 | } |
537 | ||
02f5eebb | 538 | kfree(save_enabled); |
eb1bfe80 JB |
539 | return true; |
540 | } | |
541 | ||
3a493879 | 542 | static const struct drm_fb_helper_funcs intel_fb_helper_funcs = { |
eb1bfe80 | 543 | .initial_config = intel_fb_initial_config, |
4abe3520 DA |
544 | .gamma_set = intel_crtc_fb_gamma_set, |
545 | .gamma_get = intel_crtc_fb_gamma_get, | |
cd5428a5 | 546 | .fb_probe = intelfb_create, |
4abe3520 | 547 | }; |
79e53945 | 548 | |
7b4f3990 CW |
549 | static void intel_fbdev_destroy(struct drm_device *dev, |
550 | struct intel_fbdev *ifbdev) | |
79e53945 | 551 | { |
8be48d92 | 552 | if (ifbdev->helper.fbdev) { |
ddfe1567 CW |
553 | struct fb_info *info = ifbdev->helper.fbdev; |
554 | ||
79e53945 JB |
555 | unregister_framebuffer(info); |
556 | iounmap(info->screen_base); | |
4abe3520 DA |
557 | if (info->cmap.len) |
558 | fb_dealloc_cmap(&info->cmap); | |
ddfe1567 | 559 | |
79e53945 JB |
560 | framebuffer_release(info); |
561 | } | |
562 | ||
4abe3520 | 563 | drm_fb_helper_fini(&ifbdev->helper); |
79e53945 | 564 | |
8bcd4553 | 565 | drm_framebuffer_unregister_private(&ifbdev->fb->base); |
9d661251 | 566 | drm_framebuffer_remove(&ifbdev->fb->base); |
79e53945 | 567 | } |
38651674 | 568 | |
d978ef14 JB |
569 | /* |
570 | * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible. | |
571 | * The core display code will have read out the current plane configuration, | |
572 | * so we use that to figure out if there's an object for us to use as the | |
573 | * fb, and if so, we re-use it for the fbdev configuration. | |
574 | * | |
575 | * Note we only support a single fb shared across pipes for boot (mostly for | |
576 | * fbcon), so we just find the biggest and use that. | |
577 | */ | |
578 | static bool intel_fbdev_init_bios(struct drm_device *dev, | |
579 | struct intel_fbdev *ifbdev) | |
580 | { | |
581 | struct intel_framebuffer *fb = NULL; | |
582 | struct drm_crtc *crtc; | |
583 | struct intel_crtc *intel_crtc; | |
5724dbd1 | 584 | struct intel_initial_plane_config *plane_config = NULL; |
d978ef14 JB |
585 | unsigned int max_size = 0; |
586 | ||
587 | if (!i915.fastboot) | |
588 | return false; | |
589 | ||
590 | /* Find the largest fb */ | |
70e1e0ec | 591 | for_each_crtc(dev, crtc) { |
d978ef14 JB |
592 | intel_crtc = to_intel_crtc(crtc); |
593 | ||
66e514c1 | 594 | if (!intel_crtc->active || !crtc->primary->fb) { |
d978ef14 JB |
595 | DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n", |
596 | pipe_name(intel_crtc->pipe)); | |
597 | continue; | |
598 | } | |
599 | ||
600 | if (intel_crtc->plane_config.size > max_size) { | |
601 | DRM_DEBUG_KMS("found possible fb from plane %c\n", | |
602 | pipe_name(intel_crtc->pipe)); | |
603 | plane_config = &intel_crtc->plane_config; | |
66e514c1 | 604 | fb = to_intel_framebuffer(crtc->primary->fb); |
d978ef14 JB |
605 | max_size = plane_config->size; |
606 | } | |
607 | } | |
608 | ||
609 | if (!fb) { | |
610 | DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n"); | |
611 | goto out; | |
612 | } | |
613 | ||
614 | /* Now make sure all the pipes will fit into it */ | |
70e1e0ec | 615 | for_each_crtc(dev, crtc) { |
d978ef14 JB |
616 | unsigned int cur_size; |
617 | ||
618 | intel_crtc = to_intel_crtc(crtc); | |
619 | ||
620 | if (!intel_crtc->active) { | |
621 | DRM_DEBUG_KMS("pipe %c not active, skipping\n", | |
622 | pipe_name(intel_crtc->pipe)); | |
623 | continue; | |
624 | } | |
625 | ||
626 | DRM_DEBUG_KMS("checking plane %c for BIOS fb\n", | |
627 | pipe_name(intel_crtc->pipe)); | |
628 | ||
629 | /* | |
630 | * See if the plane fb we found above will fit on this | |
bc104d1f CW |
631 | * pipe. Note we need to use the selected fb's pitch and bpp |
632 | * rather than the current pipe's, since they differ. | |
d978ef14 | 633 | */ |
6e3c9717 | 634 | cur_size = intel_crtc->config->base.adjusted_mode.crtc_hdisplay; |
bc104d1f CW |
635 | cur_size = cur_size * fb->base.bits_per_pixel / 8; |
636 | if (fb->base.pitches[0] < cur_size) { | |
637 | DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n", | |
638 | pipe_name(intel_crtc->pipe), | |
639 | cur_size, fb->base.pitches[0]); | |
640 | plane_config = NULL; | |
641 | fb = NULL; | |
642 | break; | |
643 | } | |
644 | ||
6e3c9717 | 645 | cur_size = intel_crtc->config->base.adjusted_mode.crtc_vdisplay; |
ec2c981e | 646 | cur_size = intel_fb_align_height(dev, cur_size, |
091df6cb DV |
647 | fb->base.pixel_format, |
648 | fb->base.modifier[0]); | |
bc104d1f CW |
649 | cur_size *= fb->base.pitches[0]; |
650 | DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n", | |
651 | pipe_name(intel_crtc->pipe), | |
6e3c9717 ACO |
652 | intel_crtc->config->base.adjusted_mode.crtc_hdisplay, |
653 | intel_crtc->config->base.adjusted_mode.crtc_vdisplay, | |
bc104d1f | 654 | fb->base.bits_per_pixel, |
d978ef14 | 655 | cur_size); |
d978ef14 JB |
656 | |
657 | if (cur_size > max_size) { | |
658 | DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n", | |
659 | pipe_name(intel_crtc->pipe), | |
660 | cur_size, max_size); | |
661 | plane_config = NULL; | |
662 | fb = NULL; | |
663 | break; | |
664 | } | |
665 | ||
666 | DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n", | |
667 | pipe_name(intel_crtc->pipe), | |
668 | max_size, cur_size); | |
669 | } | |
670 | ||
d978ef14 JB |
671 | if (!fb) { |
672 | DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n"); | |
673 | goto out; | |
674 | } | |
675 | ||
484b41dd | 676 | ifbdev->preferred_bpp = fb->base.bits_per_pixel; |
d978ef14 JB |
677 | ifbdev->fb = fb; |
678 | ||
484b41dd | 679 | drm_framebuffer_reference(&ifbdev->fb->base); |
d978ef14 JB |
680 | |
681 | /* Final pass to check if any active pipes don't have fbs */ | |
70e1e0ec | 682 | for_each_crtc(dev, crtc) { |
d978ef14 JB |
683 | intel_crtc = to_intel_crtc(crtc); |
684 | ||
685 | if (!intel_crtc->active) | |
686 | continue; | |
687 | ||
66e514c1 | 688 | WARN(!crtc->primary->fb, |
d978ef14 JB |
689 | "re-used BIOS config but lost an fb on crtc %d\n", |
690 | crtc->base.id); | |
691 | } | |
692 | ||
693 | ||
694 | DRM_DEBUG_KMS("using BIOS fb for initial console\n"); | |
695 | return true; | |
696 | ||
d978ef14 JB |
697 | out: |
698 | ||
699 | return false; | |
700 | } | |
701 | ||
82e3b8c1 CW |
702 | static void intel_fbdev_suspend_worker(struct work_struct *work) |
703 | { | |
704 | intel_fbdev_set_suspend(container_of(work, | |
705 | struct drm_i915_private, | |
706 | fbdev_suspend_work)->dev, | |
707 | FBINFO_STATE_RUNNING, | |
708 | true); | |
709 | } | |
710 | ||
38651674 DA |
711 | int intel_fbdev_init(struct drm_device *dev) |
712 | { | |
8be48d92 | 713 | struct intel_fbdev *ifbdev; |
b51b32cd | 714 | struct drm_i915_private *dev_priv = dev->dev_private; |
5a79395b | 715 | int ret; |
8be48d92 | 716 | |
d978ef14 JB |
717 | if (WARN_ON(INTEL_INFO(dev)->num_pipes == 0)) |
718 | return -ENODEV; | |
719 | ||
720 | ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); | |
721 | if (ifbdev == NULL) | |
8be48d92 DA |
722 | return -ENOMEM; |
723 | ||
10a23102 TR |
724 | drm_fb_helper_prepare(dev, &ifbdev->helper, &intel_fb_helper_funcs); |
725 | ||
d978ef14 JB |
726 | if (!intel_fbdev_init_bios(dev, ifbdev)) |
727 | ifbdev->preferred_bpp = 32; | |
4abe3520 | 728 | |
5a79395b | 729 | ret = drm_fb_helper_init(dev, &ifbdev->helper, |
d978ef14 | 730 | INTEL_INFO(dev)->num_pipes, 4); |
5a79395b CW |
731 | if (ret) { |
732 | kfree(ifbdev); | |
733 | return ret; | |
734 | } | |
8be48d92 | 735 | |
d978ef14 | 736 | dev_priv->fbdev = ifbdev; |
82e3b8c1 CW |
737 | INIT_WORK(&dev_priv->fbdev_suspend_work, intel_fbdev_suspend_worker); |
738 | ||
0b4c0f3f | 739 | drm_fb_helper_single_add_all_connectors(&ifbdev->helper); |
20afbda2 | 740 | |
79e53945 JB |
741 | return 0; |
742 | } | |
38651674 | 743 | |
d1d70677 | 744 | void intel_fbdev_initial_config(void *data, async_cookie_t cookie) |
20afbda2 | 745 | { |
d1d70677 | 746 | struct drm_i915_private *dev_priv = data; |
d978ef14 | 747 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
20afbda2 DV |
748 | |
749 | /* Due to peculiar init order wrt to hpd handling this is separate. */ | |
d978ef14 | 750 | drm_fb_helper_initial_config(&ifbdev->helper, ifbdev->preferred_bpp); |
20afbda2 DV |
751 | } |
752 | ||
38651674 DA |
753 | void intel_fbdev_fini(struct drm_device *dev) |
754 | { | |
b51b32cd | 755 | struct drm_i915_private *dev_priv = dev->dev_private; |
8be48d92 DA |
756 | if (!dev_priv->fbdev) |
757 | return; | |
758 | ||
82e3b8c1 CW |
759 | flush_work(&dev_priv->fbdev_suspend_work); |
760 | ||
d1d70677 | 761 | async_synchronize_full(); |
38651674 | 762 | intel_fbdev_destroy(dev, dev_priv->fbdev); |
8be48d92 | 763 | kfree(dev_priv->fbdev); |
38651674 DA |
764 | dev_priv->fbdev = NULL; |
765 | } | |
3fa016a0 | 766 | |
82e3b8c1 | 767 | void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous) |
3fa016a0 | 768 | { |
b51b32cd | 769 | struct drm_i915_private *dev_priv = dev->dev_private; |
1ffc5289 JN |
770 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
771 | struct fb_info *info; | |
772 | ||
773 | if (!ifbdev) | |
3fa016a0 DA |
774 | return; |
775 | ||
1ffc5289 JN |
776 | info = ifbdev->helper.fbdev; |
777 | ||
82e3b8c1 CW |
778 | if (synchronous) { |
779 | /* Flush any pending work to turn the console on, and then | |
780 | * wait to turn it off. It must be synchronous as we are | |
781 | * about to suspend or unload the driver. | |
782 | * | |
783 | * Note that from within the work-handler, we cannot flush | |
784 | * ourselves, so only flush outstanding work upon suspend! | |
785 | */ | |
786 | if (state != FBINFO_STATE_RUNNING) | |
787 | flush_work(&dev_priv->fbdev_suspend_work); | |
788 | console_lock(); | |
789 | } else { | |
790 | /* | |
791 | * The console lock can be pretty contented on resume due | |
792 | * to all the printk activity. Try to keep it out of the hot | |
793 | * path of resume if possible. | |
794 | */ | |
795 | WARN_ON(state != FBINFO_STATE_RUNNING); | |
796 | if (!console_trylock()) { | |
797 | /* Don't block our own workqueue as this can | |
798 | * be run in parallel with other i915.ko tasks. | |
799 | */ | |
800 | schedule_work(&dev_priv->fbdev_suspend_work); | |
801 | return; | |
802 | } | |
803 | } | |
804 | ||
1ffc5289 JN |
805 | /* On resume from hibernation: If the object is shmemfs backed, it has |
806 | * been restored from swap. If the object is stolen however, it will be | |
807 | * full of whatever garbage was left in there. | |
808 | */ | |
8bcd4553 | 809 | if (state == FBINFO_STATE_RUNNING && ifbdev->fb->obj->stolen) |
1ffc5289 JN |
810 | memset_io(info->screen_base, 0, info->screen_size); |
811 | ||
812 | fb_set_suspend(info, state); | |
82e3b8c1 | 813 | console_unlock(); |
3fa016a0 DA |
814 | } |
815 | ||
0632fef6 | 816 | void intel_fbdev_output_poll_changed(struct drm_device *dev) |
eb1f8e4f | 817 | { |
b51b32cd | 818 | struct drm_i915_private *dev_priv = dev->dev_private; |
d978ef14 JB |
819 | if (dev_priv->fbdev) |
820 | drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper); | |
eb1f8e4f | 821 | } |
e8e7a2b8 | 822 | |
0632fef6 | 823 | void intel_fbdev_restore_mode(struct drm_device *dev) |
e8e7a2b8 DA |
824 | { |
825 | int ret; | |
b51b32cd | 826 | struct drm_i915_private *dev_priv = dev->dev_private; |
e8e7a2b8 | 827 | |
d978ef14 | 828 | if (!dev_priv->fbdev) |
e3c74757 BW |
829 | return; |
830 | ||
5ea1f752 | 831 | ret = drm_fb_helper_restore_fbdev_mode_unlocked(&dev_priv->fbdev->helper); |
e8e7a2b8 DA |
832 | if (ret) |
833 | DRM_DEBUG("failed to restore crtc mode\n"); | |
834 | } |