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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> |
82e3b8c1 | 28 | #include <linux/console.h> |
6dfccb95 | 29 | #include <linux/delay.h> |
79e53945 | 30 | #include <linux/errno.h> |
6dfccb95 JN |
31 | #include <linux/init.h> |
32 | #include <linux/kernel.h> | |
79e53945 | 33 | #include <linux/mm.h> |
6dfccb95 JN |
34 | #include <linux/module.h> |
35 | #include <linux/string.h> | |
79e53945 | 36 | #include <linux/sysrq.h> |
6dfccb95 | 37 | #include <linux/tty.h> |
6a9ee8af | 38 | #include <linux/vga_switcheroo.h> |
79e53945 | 39 | |
760285e7 DH |
40 | #include <drm/drm_crtc.h> |
41 | #include <drm/drm_fb_helper.h> | |
fcd70cd3 | 42 | #include <drm/drm_fourcc.h> |
6dfccb95 | 43 | #include <drm/i915_drm.h> |
fcd70cd3 | 44 | |
6dfccb95 | 45 | #include "i915_drv.h" |
1d455f8d | 46 | #include "intel_display_types.h" |
6dfccb95 | 47 | #include "intel_fbdev.h" |
5d723d7a | 48 | #include "intel_frontbuffer.h" |
79e53945 | 49 | |
8e7cb179 | 50 | static struct intel_frontbuffer *to_frontbuffer(struct intel_fbdev *ifbdev) |
fabef825 | 51 | { |
8e7cb179 CW |
52 | return ifbdev->fb->frontbuffer; |
53 | } | |
fabef825 | 54 | |
8e7cb179 CW |
55 | static void intel_fbdev_invalidate(struct intel_fbdev *ifbdev) |
56 | { | |
57 | intel_frontbuffer_invalidate(to_frontbuffer(ifbdev), ORIGIN_CPU); | |
fabef825 CW |
58 | } |
59 | ||
e991077e DV |
60 | static int intel_fbdev_set_par(struct fb_info *info) |
61 | { | |
62 | struct drm_fb_helper *fb_helper = info->par; | |
63 | struct intel_fbdev *ifbdev = | |
64 | container_of(fb_helper, struct intel_fbdev, helper); | |
65 | int ret; | |
66 | ||
67 | ret = drm_fb_helper_set_par(info); | |
fabef825 CW |
68 | if (ret == 0) |
69 | intel_fbdev_invalidate(ifbdev); | |
e991077e DV |
70 | |
71 | return ret; | |
72 | } | |
73 | ||
03e515f7 RV |
74 | static int intel_fbdev_blank(int blank, struct fb_info *info) |
75 | { | |
76 | struct drm_fb_helper *fb_helper = info->par; | |
77 | struct intel_fbdev *ifbdev = | |
78 | container_of(fb_helper, struct intel_fbdev, helper); | |
79 | int ret; | |
80 | ||
81 | ret = drm_fb_helper_blank(blank, info); | |
fabef825 CW |
82 | if (ret == 0) |
83 | intel_fbdev_invalidate(ifbdev); | |
03e515f7 RV |
84 | |
85 | return ret; | |
86 | } | |
87 | ||
d9a946b5 RV |
88 | static int intel_fbdev_pan_display(struct fb_var_screeninfo *var, |
89 | struct fb_info *info) | |
90 | { | |
91 | struct drm_fb_helper *fb_helper = info->par; | |
92 | struct intel_fbdev *ifbdev = | |
93 | container_of(fb_helper, struct intel_fbdev, helper); | |
d9a946b5 | 94 | int ret; |
d9a946b5 | 95 | |
fabef825 CW |
96 | ret = drm_fb_helper_pan_display(var, info); |
97 | if (ret == 0) | |
98 | intel_fbdev_invalidate(ifbdev); | |
d9a946b5 RV |
99 | |
100 | return ret; | |
101 | } | |
102 | ||
79e53945 JB |
103 | static struct fb_ops intelfb_ops = { |
104 | .owner = THIS_MODULE, | |
a36384dd | 105 | DRM_FB_HELPER_DEFAULT_OPS, |
e991077e | 106 | .fb_set_par = intel_fbdev_set_par, |
21cff148 AT |
107 | .fb_fillrect = drm_fb_helper_cfb_fillrect, |
108 | .fb_copyarea = drm_fb_helper_cfb_copyarea, | |
109 | .fb_imageblit = drm_fb_helper_cfb_imageblit, | |
d9a946b5 | 110 | .fb_pan_display = intel_fbdev_pan_display, |
03e515f7 | 111 | .fb_blank = intel_fbdev_blank, |
79e53945 JB |
112 | }; |
113 | ||
8b4f49e0 JB |
114 | static int intelfb_alloc(struct drm_fb_helper *helper, |
115 | struct drm_fb_helper_surface_size *sizes) | |
79e53945 | 116 | { |
3430824b VS |
117 | struct intel_fbdev *ifbdev = |
118 | container_of(helper, struct intel_fbdev, helper); | |
4601b933 | 119 | struct drm_framebuffer *fb; |
3430824b | 120 | struct drm_device *dev = helper->dev; |
3badb49f | 121 | struct drm_i915_private *dev_priv = to_i915(dev); |
3a7f2f6a | 122 | struct drm_mode_fb_cmd2 mode_cmd = {}; |
24dbf51a | 123 | struct drm_i915_gem_object *obj; |
8e7cb179 | 124 | int size; |
79e53945 | 125 | |
b8c00ac5 | 126 | /* we don't do packed 24bpp */ |
38651674 DA |
127 | if (sizes->surface_bpp == 24) |
128 | sizes->surface_bpp = 32; | |
b8c00ac5 | 129 | |
38651674 DA |
130 | mode_cmd.width = sizes->surface_width; |
131 | mode_cmd.height = sizes->surface_height; | |
79e53945 | 132 | |
de45eaf7 PZ |
133 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * |
134 | DIV_ROUND_UP(sizes->surface_bpp, 8), 64); | |
308e5bcb JB |
135 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, |
136 | sizes->surface_depth); | |
79e53945 | 137 | |
308e5bcb | 138 | size = mode_cmd.pitches[0] * mode_cmd.height; |
1267a26b | 139 | size = PAGE_ALIGN(size); |
3badb49f PZ |
140 | |
141 | /* If the FB is too big, just don't use it since fbdev is not very | |
142 | * important and we should probably use that space with FBC or other | |
143 | * features. */ | |
24dbf51a | 144 | obj = NULL; |
b1ace601 | 145 | if (size * 2 < dev_priv->stolen_usable_size) |
187685cb | 146 | obj = i915_gem_object_create_stolen(dev_priv, size); |
0ffb0ff2 | 147 | if (obj == NULL) |
8475355f | 148 | obj = i915_gem_object_create_shmem(dev_priv, size); |
fe3db79b | 149 | if (IS_ERR(obj)) { |
1ae8c0a5 | 150 | DRM_ERROR("failed to allocate framebuffer\n"); |
8e7cb179 | 151 | return PTR_ERR(obj); |
79e53945 | 152 | } |
79e53945 | 153 | |
24dbf51a | 154 | fb = intel_framebuffer_create(obj, &mode_cmd); |
8e7cb179 CW |
155 | i915_gem_object_put(obj); |
156 | if (IS_ERR(fb)) | |
157 | return PTR_ERR(fb); | |
850c4cdc | 158 | |
a8bb6818 | 159 | ifbdev->fb = to_intel_framebuffer(fb); |
8b4f49e0 | 160 | return 0; |
8b4f49e0 JB |
161 | } |
162 | ||
163 | static int intelfb_create(struct drm_fb_helper *helper, | |
164 | struct drm_fb_helper_surface_size *sizes) | |
165 | { | |
166 | struct intel_fbdev *ifbdev = | |
167 | container_of(helper, struct intel_fbdev, helper); | |
8bcd4553 | 168 | struct intel_framebuffer *intel_fb = ifbdev->fb; |
8b4f49e0 | 169 | struct drm_device *dev = helper->dev; |
72e96d64 | 170 | struct drm_i915_private *dev_priv = to_i915(dev); |
52a05c30 | 171 | struct pci_dev *pdev = dev_priv->drm.pdev; |
72e96d64 | 172 | struct i915_ggtt *ggtt = &dev_priv->ggtt; |
f5929c53 VS |
173 | const struct i915_ggtt_view view = { |
174 | .type = I915_GGTT_VIEW_NORMAL, | |
175 | }; | |
1d264d91 CW |
176 | intel_wakeref_t wakeref; |
177 | struct fb_info *info; | |
8ef8561f | 178 | struct i915_vma *vma; |
5935485f | 179 | unsigned long flags = 0; |
d978ef14 | 180 | bool prealloc = false; |
406ea8d2 | 181 | void __iomem *vaddr; |
8ef8561f | 182 | int ret; |
8b4f49e0 | 183 | |
edd586fe CW |
184 | if (intel_fb && |
185 | (sizes->fb_width > intel_fb->base.width || | |
186 | sizes->fb_height > intel_fb->base.height)) { | |
187 | DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d)," | |
188 | " releasing it\n", | |
189 | intel_fb->base.width, intel_fb->base.height, | |
190 | sizes->fb_width, sizes->fb_height); | |
c3ed1103 | 191 | drm_framebuffer_put(&intel_fb->base); |
edd586fe CW |
192 | intel_fb = ifbdev->fb = NULL; |
193 | } | |
a5ff7a45 | 194 | if (!intel_fb || WARN_ON(!intel_fb_obj(&intel_fb->base))) { |
48e92120 | 195 | DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n"); |
8b4f49e0 JB |
196 | ret = intelfb_alloc(helper, sizes); |
197 | if (ret) | |
51f1385b | 198 | return ret; |
8bcd4553 | 199 | intel_fb = ifbdev->fb; |
8b4f49e0 | 200 | } else { |
48e92120 | 201 | DRM_DEBUG_KMS("re-using BIOS fb\n"); |
d978ef14 | 202 | prealloc = true; |
8b4f49e0 JB |
203 | sizes->fb_width = intel_fb->base.width; |
204 | sizes->fb_height = intel_fb->base.height; | |
205 | } | |
206 | ||
51f1385b | 207 | mutex_lock(&dev->struct_mutex); |
d858d569 | 208 | wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm); |
51f1385b | 209 | |
0c82312f CW |
210 | /* Pin the GGTT vma for our access via info->screen_base. |
211 | * This also validates that any existing fb inherited from the | |
212 | * BIOS is suitable for own access. | |
213 | */ | |
5935485f | 214 | vma = intel_pin_and_fence_fb_obj(&ifbdev->fb->base, |
f5929c53 | 215 | &view, false, &flags); |
058d88c4 CW |
216 | if (IS_ERR(vma)) { |
217 | ret = PTR_ERR(vma); | |
0c82312f | 218 | goto out_unlock; |
058d88c4 | 219 | } |
0c82312f | 220 | |
8e7cb179 | 221 | intel_frontbuffer_flush(to_frontbuffer(ifbdev), ORIGIN_DIRTYFB); |
07bcd99b | 222 | |
21cff148 AT |
223 | info = drm_fb_helper_alloc_fbi(helper); |
224 | if (IS_ERR(info)) { | |
366e39b4 | 225 | DRM_ERROR("Failed to allocate fb_info\n"); |
21cff148 | 226 | ret = PTR_ERR(info); |
b4476f52 | 227 | goto out_unpin; |
79e53945 JB |
228 | } |
229 | ||
8e7cb179 | 230 | ifbdev->helper.fb = &ifbdev->fb->base; |
785b93ef | 231 | |
79e53945 JB |
232 | info->fbops = &intelfb_ops; |
233 | ||
4410f391 | 234 | /* setup aperture base/size for vesafb takeover */ |
5f889b9a | 235 | info->apertures->ranges[0].base = ggtt->gmadr.start; |
72e96d64 | 236 | info->apertures->ranges[0].size = ggtt->mappable_end; |
4410f391 | 237 | |
71d12262 CW |
238 | /* Our framebuffer is the entirety of fbdev's system memory */ |
239 | info->fix.smem_start = | |
240 | (unsigned long)(ggtt->gmadr.start + vma->node.start); | |
241 | info->fix.smem_len = vma->node.size; | |
242 | ||
8ef8561f CW |
243 | vaddr = i915_vma_pin_iomap(vma); |
244 | if (IS_ERR(vaddr)) { | |
366e39b4 | 245 | DRM_ERROR("Failed to remap framebuffer into virtual memory\n"); |
8ef8561f | 246 | ret = PTR_ERR(vaddr); |
da7bdda2 | 247 | goto out_unpin; |
79e53945 | 248 | } |
8ef8561f CW |
249 | info->screen_base = vaddr; |
250 | info->screen_size = vma->node.size; | |
79e53945 | 251 | |
7a0f9ef9 | 252 | drm_fb_helper_fill_info(info, &ifbdev->helper, sizes); |
79e53945 | 253 | |
88afe715 CW |
254 | /* If the object is shmemfs backed, it will have given us zeroed pages. |
255 | * If the object is stolen however, it will be full of whatever | |
256 | * garbage was left in there. | |
257 | */ | |
8e7cb179 | 258 | if (vma->obj->stolen && !prealloc) |
88afe715 CW |
259 | memset_io(info->screen_base, 0, info->screen_size); |
260 | ||
fb2a99e1 | 261 | /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ |
79e53945 | 262 | |
bde13ebd | 263 | DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x\n", |
8e7cb179 CW |
264 | ifbdev->fb->base.width, ifbdev->fb->base.height, |
265 | i915_ggtt_offset(vma)); | |
058d88c4 | 266 | ifbdev->vma = vma; |
5935485f | 267 | ifbdev->vma_flags = flags; |
79e53945 | 268 | |
d858d569 | 269 | intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref); |
79e53945 | 270 | mutex_unlock(&dev->struct_mutex); |
52a05c30 | 271 | vga_switcheroo_client_fb_set(pdev, info); |
79e53945 JB |
272 | return 0; |
273 | ||
b4476f52 | 274 | out_unpin: |
5935485f | 275 | intel_unpin_fb_vma(vma, flags); |
0c82312f | 276 | out_unlock: |
d858d569 | 277 | intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref); |
79e53945 | 278 | mutex_unlock(&dev->struct_mutex); |
79e53945 JB |
279 | return ret; |
280 | } | |
281 | ||
3a493879 | 282 | static const struct drm_fb_helper_funcs intel_fb_helper_funcs = { |
cd5428a5 | 283 | .fb_probe = intelfb_create, |
4abe3520 | 284 | }; |
79e53945 | 285 | |
43cee314 | 286 | static void intel_fbdev_destroy(struct intel_fbdev *ifbdev) |
79e53945 | 287 | { |
0c82312f CW |
288 | /* We rely on the object-free to release the VMA pinning for |
289 | * the info->screen_base mmaping. Leaking the VMA is simpler than | |
290 | * trying to rectify all the possible error paths leading here. | |
291 | */ | |
ddfe1567 | 292 | |
4abe3520 | 293 | drm_fb_helper_fini(&ifbdev->helper); |
79e53945 | 294 | |
15727ed0 | 295 | if (ifbdev->vma) { |
43cee314 | 296 | mutex_lock(&ifbdev->helper.dev->struct_mutex); |
5935485f | 297 | intel_unpin_fb_vma(ifbdev->vma, ifbdev->vma_flags); |
43cee314 | 298 | mutex_unlock(&ifbdev->helper.dev->struct_mutex); |
15727ed0 | 299 | } |
fb4b8ce1 | 300 | |
15727ed0 | 301 | if (ifbdev->fb) |
54632abe | 302 | drm_framebuffer_remove(&ifbdev->fb->base); |
43cee314 CW |
303 | |
304 | kfree(ifbdev); | |
79e53945 | 305 | } |
38651674 | 306 | |
d978ef14 JB |
307 | /* |
308 | * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible. | |
309 | * The core display code will have read out the current plane configuration, | |
310 | * so we use that to figure out if there's an object for us to use as the | |
311 | * fb, and if so, we re-use it for the fbdev configuration. | |
312 | * | |
313 | * Note we only support a single fb shared across pipes for boot (mostly for | |
314 | * fbcon), so we just find the biggest and use that. | |
315 | */ | |
316 | static bool intel_fbdev_init_bios(struct drm_device *dev, | |
317 | struct intel_fbdev *ifbdev) | |
318 | { | |
319 | struct intel_framebuffer *fb = NULL; | |
320 | struct drm_crtc *crtc; | |
321 | struct intel_crtc *intel_crtc; | |
d978ef14 JB |
322 | unsigned int max_size = 0; |
323 | ||
d978ef14 | 324 | /* Find the largest fb */ |
70e1e0ec | 325 | for_each_crtc(dev, crtc) { |
8e9ba31a ML |
326 | struct drm_i915_gem_object *obj = |
327 | intel_fb_obj(crtc->primary->state->fb); | |
d978ef14 JB |
328 | intel_crtc = to_intel_crtc(crtc); |
329 | ||
d5515991 | 330 | if (!crtc->state->active || !obj) { |
d978ef14 JB |
331 | DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n", |
332 | pipe_name(intel_crtc->pipe)); | |
333 | continue; | |
334 | } | |
335 | ||
8e9ba31a | 336 | if (obj->base.size > max_size) { |
d978ef14 JB |
337 | DRM_DEBUG_KMS("found possible fb from plane %c\n", |
338 | pipe_name(intel_crtc->pipe)); | |
8e9ba31a ML |
339 | fb = to_intel_framebuffer(crtc->primary->state->fb); |
340 | max_size = obj->base.size; | |
d978ef14 JB |
341 | } |
342 | } | |
343 | ||
344 | if (!fb) { | |
345 | DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n"); | |
346 | goto out; | |
347 | } | |
348 | ||
349 | /* Now make sure all the pipes will fit into it */ | |
70e1e0ec | 350 | for_each_crtc(dev, crtc) { |
d978ef14 JB |
351 | unsigned int cur_size; |
352 | ||
353 | intel_crtc = to_intel_crtc(crtc); | |
354 | ||
d5515991 | 355 | if (!crtc->state->active) { |
d978ef14 JB |
356 | DRM_DEBUG_KMS("pipe %c not active, skipping\n", |
357 | pipe_name(intel_crtc->pipe)); | |
358 | continue; | |
359 | } | |
360 | ||
361 | DRM_DEBUG_KMS("checking plane %c for BIOS fb\n", | |
362 | pipe_name(intel_crtc->pipe)); | |
363 | ||
364 | /* | |
365 | * See if the plane fb we found above will fit on this | |
bc104d1f CW |
366 | * pipe. Note we need to use the selected fb's pitch and bpp |
367 | * rather than the current pipe's, since they differ. | |
d978ef14 | 368 | */ |
6e3d9dd0 | 369 | cur_size = crtc->state->adjusted_mode.crtc_hdisplay; |
272725c7 | 370 | cur_size = cur_size * fb->base.format->cpp[0]; |
bc104d1f CW |
371 | if (fb->base.pitches[0] < cur_size) { |
372 | DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n", | |
373 | pipe_name(intel_crtc->pipe), | |
374 | cur_size, fb->base.pitches[0]); | |
bc104d1f CW |
375 | fb = NULL; |
376 | break; | |
377 | } | |
378 | ||
6e3d9dd0 | 379 | cur_size = crtc->state->adjusted_mode.crtc_vdisplay; |
d88c4afd | 380 | cur_size = intel_fb_align_height(&fb->base, 0, cur_size); |
bc104d1f CW |
381 | cur_size *= fb->base.pitches[0]; |
382 | DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n", | |
383 | pipe_name(intel_crtc->pipe), | |
6e3d9dd0 ML |
384 | crtc->state->adjusted_mode.crtc_hdisplay, |
385 | crtc->state->adjusted_mode.crtc_vdisplay, | |
272725c7 | 386 | fb->base.format->cpp[0] * 8, |
d978ef14 | 387 | cur_size); |
d978ef14 JB |
388 | |
389 | if (cur_size > max_size) { | |
390 | DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n", | |
391 | pipe_name(intel_crtc->pipe), | |
392 | cur_size, max_size); | |
d978ef14 JB |
393 | fb = NULL; |
394 | break; | |
395 | } | |
396 | ||
397 | DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n", | |
398 | pipe_name(intel_crtc->pipe), | |
399 | max_size, cur_size); | |
400 | } | |
401 | ||
d978ef14 JB |
402 | if (!fb) { |
403 | DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n"); | |
404 | goto out; | |
405 | } | |
406 | ||
272725c7 | 407 | ifbdev->preferred_bpp = fb->base.format->cpp[0] * 8; |
d978ef14 JB |
408 | ifbdev->fb = fb; |
409 | ||
c3ed1103 | 410 | drm_framebuffer_get(&ifbdev->fb->base); |
d978ef14 JB |
411 | |
412 | /* Final pass to check if any active pipes don't have fbs */ | |
70e1e0ec | 413 | for_each_crtc(dev, crtc) { |
d978ef14 JB |
414 | intel_crtc = to_intel_crtc(crtc); |
415 | ||
d5515991 | 416 | if (!crtc->state->active) |
d978ef14 JB |
417 | continue; |
418 | ||
8bc20f65 | 419 | WARN(!crtc->primary->state->fb, |
d978ef14 JB |
420 | "re-used BIOS config but lost an fb on crtc %d\n", |
421 | crtc->base.id); | |
422 | } | |
423 | ||
424 | ||
425 | DRM_DEBUG_KMS("using BIOS fb for initial console\n"); | |
426 | return true; | |
427 | ||
d978ef14 JB |
428 | out: |
429 | ||
430 | return false; | |
431 | } | |
432 | ||
82e3b8c1 CW |
433 | static void intel_fbdev_suspend_worker(struct work_struct *work) |
434 | { | |
91c8a326 CW |
435 | intel_fbdev_set_suspend(&container_of(work, |
436 | struct drm_i915_private, | |
437 | fbdev_suspend_work)->drm, | |
82e3b8c1 CW |
438 | FBINFO_STATE_RUNNING, |
439 | true); | |
440 | } | |
441 | ||
38651674 DA |
442 | int intel_fbdev_init(struct drm_device *dev) |
443 | { | |
fac5e23e | 444 | struct drm_i915_private *dev_priv = to_i915(dev); |
b7f05d4a | 445 | struct intel_fbdev *ifbdev; |
5a79395b | 446 | int ret; |
8be48d92 | 447 | |
e1bf094b | 448 | if (WARN_ON(!HAS_DISPLAY(dev_priv))) |
d978ef14 JB |
449 | return -ENODEV; |
450 | ||
451 | ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); | |
452 | if (ifbdev == NULL) | |
8be48d92 DA |
453 | return -ENOMEM; |
454 | ||
fe5ec656 | 455 | mutex_init(&ifbdev->hpd_lock); |
10a23102 TR |
456 | drm_fb_helper_prepare(dev, &ifbdev->helper, &intel_fb_helper_funcs); |
457 | ||
d978ef14 JB |
458 | if (!intel_fbdev_init_bios(dev, ifbdev)) |
459 | ifbdev->preferred_bpp = 32; | |
4abe3520 | 460 | |
e4563f6b | 461 | ret = drm_fb_helper_init(dev, &ifbdev->helper, 4); |
5a79395b CW |
462 | if (ret) { |
463 | kfree(ifbdev); | |
464 | return ret; | |
465 | } | |
8be48d92 | 466 | |
d978ef14 | 467 | dev_priv->fbdev = ifbdev; |
82e3b8c1 CW |
468 | INIT_WORK(&dev_priv->fbdev_suspend_work, intel_fbdev_suspend_worker); |
469 | ||
0b4c0f3f | 470 | drm_fb_helper_single_add_all_connectors(&ifbdev->helper); |
20afbda2 | 471 | |
79e53945 JB |
472 | return 0; |
473 | } | |
38651674 | 474 | |
e00bf696 | 475 | static void intel_fbdev_initial_config(void *data, async_cookie_t cookie) |
20afbda2 | 476 | { |
43cee314 | 477 | struct intel_fbdev *ifbdev = data; |
20afbda2 DV |
478 | |
479 | /* Due to peculiar init order wrt to hpd handling this is separate. */ | |
366e39b4 | 480 | if (drm_fb_helper_initial_config(&ifbdev->helper, |
ad88d7fc | 481 | ifbdev->preferred_bpp)) |
4f256d82 | 482 | intel_fbdev_unregister(to_i915(ifbdev->helper.dev)); |
20afbda2 DV |
483 | } |
484 | ||
e00bf696 VS |
485 | void intel_fbdev_initial_config_async(struct drm_device *dev) |
486 | { | |
43cee314 CW |
487 | struct intel_fbdev *ifbdev = to_i915(dev)->fbdev; |
488 | ||
5b8cd075 CT |
489 | if (!ifbdev) |
490 | return; | |
491 | ||
43cee314 CW |
492 | ifbdev->cookie = async_schedule(intel_fbdev_initial_config, ifbdev); |
493 | } | |
494 | ||
495 | static void intel_fbdev_sync(struct intel_fbdev *ifbdev) | |
496 | { | |
497 | if (!ifbdev->cookie) | |
498 | return; | |
499 | ||
500 | /* Only serialises with all preceding async calls, hence +1 */ | |
501 | async_synchronize_cookie(ifbdev->cookie + 1); | |
502 | ifbdev->cookie = 0; | |
e00bf696 VS |
503 | } |
504 | ||
4f256d82 | 505 | void intel_fbdev_unregister(struct drm_i915_private *dev_priv) |
38651674 | 506 | { |
43cee314 CW |
507 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
508 | ||
509 | if (!ifbdev) | |
8be48d92 DA |
510 | return; |
511 | ||
0b8c0e9c | 512 | cancel_work_sync(&dev_priv->fbdev_suspend_work); |
366e39b4 | 513 | if (!current_is_async()) |
43cee314 CW |
514 | intel_fbdev_sync(ifbdev); |
515 | ||
4f256d82 DV |
516 | drm_fb_helper_unregister_fbi(&ifbdev->helper); |
517 | } | |
518 | ||
519 | void intel_fbdev_fini(struct drm_i915_private *dev_priv) | |
520 | { | |
521 | struct intel_fbdev *ifbdev = fetch_and_zero(&dev_priv->fbdev); | |
522 | ||
523 | if (!ifbdev) | |
524 | return; | |
525 | ||
43cee314 | 526 | intel_fbdev_destroy(ifbdev); |
38651674 | 527 | } |
3fa016a0 | 528 | |
fe5ec656 LP |
529 | /* Suspends/resumes fbdev processing of incoming HPD events. When resuming HPD |
530 | * processing, fbdev will perform a full connector reprobe if a hotplug event | |
531 | * was received while HPD was suspended. | |
532 | */ | |
533 | static void intel_fbdev_hpd_set_suspend(struct intel_fbdev *ifbdev, int state) | |
534 | { | |
535 | bool send_hpd = false; | |
536 | ||
537 | mutex_lock(&ifbdev->hpd_lock); | |
538 | ifbdev->hpd_suspended = state == FBINFO_STATE_SUSPENDED; | |
539 | send_hpd = !ifbdev->hpd_suspended && ifbdev->hpd_waiting; | |
540 | ifbdev->hpd_waiting = false; | |
541 | mutex_unlock(&ifbdev->hpd_lock); | |
542 | ||
543 | if (send_hpd) { | |
544 | DRM_DEBUG_KMS("Handling delayed fbcon HPD event\n"); | |
545 | drm_fb_helper_hotplug_event(&ifbdev->helper); | |
546 | } | |
547 | } | |
548 | ||
82e3b8c1 | 549 | void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous) |
3fa016a0 | 550 | { |
fac5e23e | 551 | struct drm_i915_private *dev_priv = to_i915(dev); |
1ffc5289 JN |
552 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
553 | struct fb_info *info; | |
554 | ||
15727ed0 | 555 | if (!ifbdev || !ifbdev->vma) |
3fa016a0 DA |
556 | return; |
557 | ||
1ffc5289 JN |
558 | info = ifbdev->helper.fbdev; |
559 | ||
82e3b8c1 CW |
560 | if (synchronous) { |
561 | /* Flush any pending work to turn the console on, and then | |
562 | * wait to turn it off. It must be synchronous as we are | |
563 | * about to suspend or unload the driver. | |
564 | * | |
565 | * Note that from within the work-handler, we cannot flush | |
566 | * ourselves, so only flush outstanding work upon suspend! | |
567 | */ | |
568 | if (state != FBINFO_STATE_RUNNING) | |
569 | flush_work(&dev_priv->fbdev_suspend_work); | |
fe5ec656 | 570 | |
82e3b8c1 CW |
571 | console_lock(); |
572 | } else { | |
573 | /* | |
574 | * The console lock can be pretty contented on resume due | |
575 | * to all the printk activity. Try to keep it out of the hot | |
576 | * path of resume if possible. | |
577 | */ | |
578 | WARN_ON(state != FBINFO_STATE_RUNNING); | |
579 | if (!console_trylock()) { | |
580 | /* Don't block our own workqueue as this can | |
581 | * be run in parallel with other i915.ko tasks. | |
582 | */ | |
583 | schedule_work(&dev_priv->fbdev_suspend_work); | |
584 | return; | |
585 | } | |
586 | } | |
587 | ||
1ffc5289 JN |
588 | /* On resume from hibernation: If the object is shmemfs backed, it has |
589 | * been restored from swap. If the object is stolen however, it will be | |
590 | * full of whatever garbage was left in there. | |
591 | */ | |
a5ff7a45 DS |
592 | if (state == FBINFO_STATE_RUNNING && |
593 | intel_fb_obj(&ifbdev->fb->base)->stolen) | |
1ffc5289 JN |
594 | memset_io(info->screen_base, 0, info->screen_size); |
595 | ||
21cff148 | 596 | drm_fb_helper_set_suspend(&ifbdev->helper, state); |
82e3b8c1 | 597 | console_unlock(); |
fe5ec656 LP |
598 | |
599 | intel_fbdev_hpd_set_suspend(ifbdev, state); | |
3fa016a0 DA |
600 | } |
601 | ||
0632fef6 | 602 | void intel_fbdev_output_poll_changed(struct drm_device *dev) |
eb1f8e4f | 603 | { |
c45eb4fe | 604 | struct intel_fbdev *ifbdev = to_i915(dev)->fbdev; |
fe5ec656 | 605 | bool send_hpd; |
c45eb4fe | 606 | |
ad88d7fc CW |
607 | if (!ifbdev) |
608 | return; | |
609 | ||
610 | intel_fbdev_sync(ifbdev); | |
fe5ec656 LP |
611 | |
612 | mutex_lock(&ifbdev->hpd_lock); | |
613 | send_hpd = !ifbdev->hpd_suspended; | |
614 | ifbdev->hpd_waiting = true; | |
615 | mutex_unlock(&ifbdev->hpd_lock); | |
616 | ||
617 | if (send_hpd && (ifbdev->vma || ifbdev->helper.deferred_setup)) | |
c45eb4fe | 618 | drm_fb_helper_hotplug_event(&ifbdev->helper); |
eb1f8e4f | 619 | } |
e8e7a2b8 | 620 | |
0632fef6 | 621 | void intel_fbdev_restore_mode(struct drm_device *dev) |
e8e7a2b8 | 622 | { |
c45eb4fe | 623 | struct intel_fbdev *ifbdev = to_i915(dev)->fbdev; |
e8e7a2b8 | 624 | |
d04df732 | 625 | if (!ifbdev) |
e3c74757 BW |
626 | return; |
627 | ||
e77018f7 | 628 | intel_fbdev_sync(ifbdev); |
15727ed0 | 629 | if (!ifbdev->vma) |
c45eb4fe | 630 | return; |
e77018f7 | 631 | |
fabef825 CW |
632 | if (drm_fb_helper_restore_fbdev_mode_unlocked(&ifbdev->helper) == 0) |
633 | intel_fbdev_invalidate(ifbdev); | |
e8e7a2b8 | 634 | } |