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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> | |
79e53945 | 37 | #include <linux/init.h> |
6a9ee8af | 38 | #include <linux/vga_switcheroo.h> |
79e53945 | 39 | |
760285e7 DH |
40 | #include <drm/drmP.h> |
41 | #include <drm/drm_crtc.h> | |
42 | #include <drm/drm_fb_helper.h> | |
79e53945 | 43 | #include "intel_drv.h" |
5d723d7a | 44 | #include "intel_frontbuffer.h" |
760285e7 | 45 | #include <drm/i915_drm.h> |
79e53945 JB |
46 | #include "i915_drv.h" |
47 | ||
fabef825 CW |
48 | static void intel_fbdev_invalidate(struct intel_fbdev *ifbdev) |
49 | { | |
50 | struct drm_i915_gem_object *obj = ifbdev->fb->obj; | |
51 | unsigned int origin = ifbdev->vma->fence ? ORIGIN_GTT : ORIGIN_CPU; | |
52 | ||
53 | intel_fb_obj_invalidate(obj, origin); | |
54 | } | |
55 | ||
e991077e DV |
56 | static int intel_fbdev_set_par(struct fb_info *info) |
57 | { | |
58 | struct drm_fb_helper *fb_helper = info->par; | |
59 | struct intel_fbdev *ifbdev = | |
60 | container_of(fb_helper, struct intel_fbdev, helper); | |
61 | int ret; | |
62 | ||
63 | ret = drm_fb_helper_set_par(info); | |
fabef825 CW |
64 | if (ret == 0) |
65 | intel_fbdev_invalidate(ifbdev); | |
e991077e DV |
66 | |
67 | return ret; | |
68 | } | |
69 | ||
03e515f7 RV |
70 | static int intel_fbdev_blank(int blank, struct fb_info *info) |
71 | { | |
72 | struct drm_fb_helper *fb_helper = info->par; | |
73 | struct intel_fbdev *ifbdev = | |
74 | container_of(fb_helper, struct intel_fbdev, helper); | |
75 | int ret; | |
76 | ||
77 | ret = drm_fb_helper_blank(blank, info); | |
fabef825 CW |
78 | if (ret == 0) |
79 | intel_fbdev_invalidate(ifbdev); | |
03e515f7 RV |
80 | |
81 | return ret; | |
82 | } | |
83 | ||
d9a946b5 RV |
84 | static int intel_fbdev_pan_display(struct fb_var_screeninfo *var, |
85 | struct fb_info *info) | |
86 | { | |
87 | struct drm_fb_helper *fb_helper = info->par; | |
88 | struct intel_fbdev *ifbdev = | |
89 | container_of(fb_helper, struct intel_fbdev, helper); | |
d9a946b5 | 90 | int ret; |
d9a946b5 | 91 | |
fabef825 CW |
92 | ret = drm_fb_helper_pan_display(var, info); |
93 | if (ret == 0) | |
94 | intel_fbdev_invalidate(ifbdev); | |
d9a946b5 RV |
95 | |
96 | return ret; | |
97 | } | |
98 | ||
79e53945 JB |
99 | static struct fb_ops intelfb_ops = { |
100 | .owner = THIS_MODULE, | |
a36384dd | 101 | DRM_FB_HELPER_DEFAULT_OPS, |
e991077e | 102 | .fb_set_par = intel_fbdev_set_par, |
21cff148 AT |
103 | .fb_fillrect = drm_fb_helper_cfb_fillrect, |
104 | .fb_copyarea = drm_fb_helper_cfb_copyarea, | |
105 | .fb_imageblit = drm_fb_helper_cfb_imageblit, | |
d9a946b5 | 106 | .fb_pan_display = intel_fbdev_pan_display, |
03e515f7 | 107 | .fb_blank = intel_fbdev_blank, |
79e53945 JB |
108 | }; |
109 | ||
8b4f49e0 JB |
110 | static int intelfb_alloc(struct drm_fb_helper *helper, |
111 | struct drm_fb_helper_surface_size *sizes) | |
79e53945 | 112 | { |
3430824b VS |
113 | struct intel_fbdev *ifbdev = |
114 | container_of(helper, struct intel_fbdev, helper); | |
4601b933 | 115 | struct drm_framebuffer *fb; |
3430824b | 116 | struct drm_device *dev = helper->dev; |
3badb49f | 117 | struct drm_i915_private *dev_priv = to_i915(dev); |
72e96d64 | 118 | struct i915_ggtt *ggtt = &dev_priv->ggtt; |
3a7f2f6a | 119 | struct drm_mode_fb_cmd2 mode_cmd = {}; |
24dbf51a | 120 | struct drm_i915_gem_object *obj; |
57084d05 | 121 | int size, ret; |
79e53945 | 122 | |
b8c00ac5 | 123 | /* we don't do packed 24bpp */ |
38651674 DA |
124 | if (sizes->surface_bpp == 24) |
125 | sizes->surface_bpp = 32; | |
b8c00ac5 | 126 | |
38651674 DA |
127 | mode_cmd.width = sizes->surface_width; |
128 | mode_cmd.height = sizes->surface_height; | |
79e53945 | 129 | |
de45eaf7 PZ |
130 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * |
131 | DIV_ROUND_UP(sizes->surface_bpp, 8), 64); | |
308e5bcb JB |
132 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, |
133 | sizes->surface_depth); | |
79e53945 | 134 | |
308e5bcb | 135 | size = mode_cmd.pitches[0] * mode_cmd.height; |
1267a26b | 136 | size = PAGE_ALIGN(size); |
3badb49f PZ |
137 | |
138 | /* If the FB is too big, just don't use it since fbdev is not very | |
139 | * important and we should probably use that space with FBC or other | |
140 | * features. */ | |
24dbf51a | 141 | obj = NULL; |
72e96d64 | 142 | if (size * 2 < ggtt->stolen_usable_size) |
187685cb | 143 | obj = i915_gem_object_create_stolen(dev_priv, size); |
0ffb0ff2 | 144 | if (obj == NULL) |
12d79d78 | 145 | obj = i915_gem_object_create(dev_priv, size); |
fe3db79b | 146 | if (IS_ERR(obj)) { |
1ae8c0a5 | 147 | DRM_ERROR("failed to allocate framebuffer\n"); |
fe3db79b | 148 | ret = PTR_ERR(obj); |
24dbf51a | 149 | goto err; |
79e53945 | 150 | } |
79e53945 | 151 | |
24dbf51a | 152 | fb = intel_framebuffer_create(obj, &mode_cmd); |
a8bb6818 DV |
153 | if (IS_ERR(fb)) { |
154 | ret = PTR_ERR(fb); | |
24dbf51a | 155 | goto err_obj; |
850c4cdc TU |
156 | } |
157 | ||
a8bb6818 | 158 | ifbdev->fb = to_intel_framebuffer(fb); |
8b4f49e0 JB |
159 | |
160 | return 0; | |
161 | ||
24dbf51a CW |
162 | err_obj: |
163 | i915_gem_object_put(obj); | |
164 | err: | |
8b4f49e0 JB |
165 | return ret; |
166 | } | |
167 | ||
168 | static int intelfb_create(struct drm_fb_helper *helper, | |
169 | struct drm_fb_helper_surface_size *sizes) | |
170 | { | |
171 | struct intel_fbdev *ifbdev = | |
172 | container_of(helper, struct intel_fbdev, helper); | |
8bcd4553 | 173 | struct intel_framebuffer *intel_fb = ifbdev->fb; |
8b4f49e0 | 174 | struct drm_device *dev = helper->dev; |
72e96d64 | 175 | struct drm_i915_private *dev_priv = to_i915(dev); |
52a05c30 | 176 | struct pci_dev *pdev = dev_priv->drm.pdev; |
72e96d64 | 177 | struct i915_ggtt *ggtt = &dev_priv->ggtt; |
8b4f49e0 JB |
178 | struct fb_info *info; |
179 | struct drm_framebuffer *fb; | |
8ef8561f | 180 | struct i915_vma *vma; |
d978ef14 | 181 | bool prealloc = false; |
406ea8d2 | 182 | void __iomem *vaddr; |
8ef8561f | 183 | int ret; |
8b4f49e0 | 184 | |
edd586fe CW |
185 | if (intel_fb && |
186 | (sizes->fb_width > intel_fb->base.width || | |
187 | sizes->fb_height > intel_fb->base.height)) { | |
188 | DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d)," | |
189 | " releasing it\n", | |
190 | intel_fb->base.width, intel_fb->base.height, | |
191 | sizes->fb_width, sizes->fb_height); | |
c3ed1103 | 192 | drm_framebuffer_put(&intel_fb->base); |
edd586fe CW |
193 | intel_fb = ifbdev->fb = NULL; |
194 | } | |
8bcd4553 | 195 | if (!intel_fb || WARN_ON(!intel_fb->obj)) { |
48e92120 | 196 | DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n"); |
8b4f49e0 JB |
197 | ret = intelfb_alloc(helper, sizes); |
198 | if (ret) | |
51f1385b | 199 | return ret; |
8bcd4553 | 200 | intel_fb = ifbdev->fb; |
8b4f49e0 | 201 | } else { |
48e92120 | 202 | DRM_DEBUG_KMS("re-using BIOS fb\n"); |
d978ef14 | 203 | prealloc = true; |
8b4f49e0 JB |
204 | sizes->fb_width = intel_fb->base.width; |
205 | sizes->fb_height = intel_fb->base.height; | |
206 | } | |
207 | ||
51f1385b | 208 | mutex_lock(&dev->struct_mutex); |
c6364232 | 209 | intel_runtime_pm_get(dev_priv); |
51f1385b | 210 | |
0c82312f CW |
211 | /* Pin the GGTT vma for our access via info->screen_base. |
212 | * This also validates that any existing fb inherited from the | |
213 | * BIOS is suitable for own access. | |
214 | */ | |
c2c446ad | 215 | vma = intel_pin_and_fence_fb_obj(&ifbdev->fb->base, DRM_MODE_ROTATE_0); |
058d88c4 CW |
216 | if (IS_ERR(vma)) { |
217 | ret = PTR_ERR(vma); | |
0c82312f | 218 | goto out_unlock; |
058d88c4 | 219 | } |
0c82312f | 220 | |
21cff148 AT |
221 | info = drm_fb_helper_alloc_fbi(helper); |
222 | if (IS_ERR(info)) { | |
366e39b4 | 223 | DRM_ERROR("Failed to allocate fb_info\n"); |
21cff148 | 224 | ret = PTR_ERR(info); |
b4476f52 | 225 | goto out_unpin; |
79e53945 JB |
226 | } |
227 | ||
3430824b | 228 | info->par = helper; |
79e53945 | 229 | |
8bcd4553 | 230 | fb = &ifbdev->fb->base; |
79e53945 | 231 | |
38651674 | 232 | ifbdev->helper.fb = fb; |
785b93ef | 233 | |
79e53945 | 234 | strcpy(info->fix.id, "inteldrmfb"); |
79e53945 | 235 | |
79e53945 JB |
236 | info->fbops = &intelfb_ops; |
237 | ||
4410f391 | 238 | /* setup aperture base/size for vesafb takeover */ |
1471ca9a | 239 | info->apertures->ranges[0].base = dev->mode_config.fb_base; |
72e96d64 | 240 | info->apertures->ranges[0].size = ggtt->mappable_end; |
4410f391 | 241 | |
bde13ebd | 242 | info->fix.smem_start = dev->mode_config.fb_base + i915_ggtt_offset(vma); |
8ef8561f | 243 | info->fix.smem_len = vma->node.size; |
79e53945 | 244 | |
8ef8561f CW |
245 | vaddr = i915_vma_pin_iomap(vma); |
246 | if (IS_ERR(vaddr)) { | |
366e39b4 | 247 | DRM_ERROR("Failed to remap framebuffer into virtual memory\n"); |
8ef8561f | 248 | ret = PTR_ERR(vaddr); |
da7bdda2 | 249 | goto out_unpin; |
79e53945 | 250 | } |
8ef8561f CW |
251 | info->screen_base = vaddr; |
252 | info->screen_size = vma->node.size; | |
79e53945 | 253 | |
24576d23 JB |
254 | /* This driver doesn't need a VT switch to restore the mode on resume */ |
255 | info->skip_vt_switch = true; | |
256 | ||
b00c600e | 257 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth); |
38651674 | 258 | drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height); |
79e53945 | 259 | |
88afe715 CW |
260 | /* If the object is shmemfs backed, it will have given us zeroed pages. |
261 | * If the object is stolen however, it will be full of whatever | |
262 | * garbage was left in there. | |
263 | */ | |
058d88c4 | 264 | if (intel_fb->obj->stolen && !prealloc) |
88afe715 CW |
265 | memset_io(info->screen_base, 0, info->screen_size); |
266 | ||
fb2a99e1 | 267 | /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ |
79e53945 | 268 | |
bde13ebd CW |
269 | DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x\n", |
270 | fb->width, fb->height, i915_ggtt_offset(vma)); | |
058d88c4 | 271 | ifbdev->vma = vma; |
79e53945 | 272 | |
c6364232 | 273 | intel_runtime_pm_put(dev_priv); |
79e53945 | 274 | mutex_unlock(&dev->struct_mutex); |
52a05c30 | 275 | vga_switcheroo_client_fb_set(pdev, info); |
79e53945 JB |
276 | return 0; |
277 | ||
b4476f52 | 278 | out_unpin: |
be1e3415 | 279 | intel_unpin_fb_vma(vma); |
0c82312f | 280 | out_unlock: |
c6364232 | 281 | intel_runtime_pm_put(dev_priv); |
79e53945 | 282 | mutex_unlock(&dev->struct_mutex); |
79e53945 JB |
283 | return ret; |
284 | } | |
285 | ||
eb1bfe80 JB |
286 | static struct drm_fb_helper_crtc * |
287 | intel_fb_helper_crtc(struct drm_fb_helper *fb_helper, struct drm_crtc *crtc) | |
288 | { | |
289 | int i; | |
290 | ||
291 | for (i = 0; i < fb_helper->crtc_count; i++) | |
292 | if (fb_helper->crtc_info[i].mode_set.crtc == crtc) | |
293 | return &fb_helper->crtc_info[i]; | |
294 | ||
295 | return NULL; | |
296 | } | |
297 | ||
298 | /* | |
299 | * Try to read the BIOS display configuration and use it for the initial | |
300 | * fb configuration. | |
301 | * | |
302 | * The BIOS or boot loader will generally create an initial display | |
303 | * configuration for us that includes some set of active pipes and displays. | |
304 | * This routine tries to figure out which pipes and connectors are active | |
305 | * and stuffs them into the crtcs and modes array given to us by the | |
306 | * drm_fb_helper code. | |
307 | * | |
308 | * The overall sequence is: | |
309 | * intel_fbdev_init - from driver load | |
310 | * intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data | |
311 | * drm_fb_helper_init - build fb helper structs | |
312 | * drm_fb_helper_single_add_all_connectors - more fb helper structs | |
313 | * intel_fbdev_initial_config - apply the config | |
314 | * drm_fb_helper_initial_config - call ->probe then register_framebuffer() | |
315 | * drm_setup_crtcs - build crtc config for fbdev | |
316 | * intel_fb_initial_config - find active connectors etc | |
317 | * drm_fb_helper_single_fb_probe - set up fbdev | |
318 | * intelfb_create - re-use or alloc fb, build out fbdev structs | |
319 | * | |
320 | * Note that we don't make special consideration whether we could actually | |
321 | * switch to the selected modes without a full modeset. E.g. when the display | |
322 | * is in VGA mode we need to recalculate watermarks and set a new high-res | |
323 | * framebuffer anyway. | |
324 | */ | |
325 | static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper, | |
326 | struct drm_fb_helper_crtc **crtcs, | |
327 | struct drm_display_mode **modes, | |
b0ee9e7f | 328 | struct drm_fb_offset *offsets, |
eb1bfe80 JB |
329 | bool *enabled, int width, int height) |
330 | { | |
b7f05d4a | 331 | struct drm_i915_private *dev_priv = to_i915(fb_helper->dev); |
754a7659 | 332 | unsigned long conn_configured, conn_seq, mask; |
86f40bb6 | 333 | unsigned int count = min(fb_helper->connector_count, BITS_PER_LONG); |
eb1bfe80 | 334 | int i, j; |
02f5eebb | 335 | bool *save_enabled; |
e13a0583 | 336 | bool fallback = true, ret = true; |
7e696e4c DV |
337 | int num_connectors_enabled = 0; |
338 | int num_connectors_detected = 0; | |
e13a0583 | 339 | struct drm_modeset_acquire_ctx ctx; |
02f5eebb | 340 | |
86f40bb6 | 341 | save_enabled = kcalloc(count, sizeof(bool), GFP_KERNEL); |
02f5eebb JB |
342 | if (!save_enabled) |
343 | return false; | |
344 | ||
e13a0583 DV |
345 | drm_modeset_acquire_init(&ctx, 0); |
346 | ||
347 | while (drm_modeset_lock_all_ctx(fb_helper->dev, &ctx) != 0) | |
348 | drm_modeset_backoff(&ctx); | |
349 | ||
86f40bb6 | 350 | memcpy(save_enabled, enabled, count); |
3c779a49 | 351 | mask = GENMASK(count - 1, 0); |
86f40bb6 | 352 | conn_configured = 0; |
b0ee9e7f | 353 | retry: |
754a7659 | 354 | conn_seq = conn_configured; |
86f40bb6 | 355 | for (i = 0; i < count; i++) { |
eb1bfe80 JB |
356 | struct drm_fb_helper_connector *fb_conn; |
357 | struct drm_connector *connector; | |
358 | struct drm_encoder *encoder; | |
359 | struct drm_fb_helper_crtc *new_crtc; | |
360 | ||
361 | fb_conn = fb_helper->connector_info[i]; | |
362 | connector = fb_conn->connector; | |
7e696e4c | 363 | |
86f40bb6 | 364 | if (conn_configured & BIT(i)) |
b0ee9e7f DA |
365 | continue; |
366 | ||
754a7659 | 367 | if (conn_seq == 0 && !connector->has_tile) |
b0ee9e7f DA |
368 | continue; |
369 | ||
7e696e4c DV |
370 | if (connector->status == connector_status_connected) |
371 | num_connectors_detected++; | |
372 | ||
eb1bfe80 | 373 | if (!enabled[i]) { |
c0c97622 | 374 | DRM_DEBUG_KMS("connector %s not enabled, skipping\n", |
c23cc417 | 375 | connector->name); |
86f40bb6 | 376 | conn_configured |= BIT(i); |
eb1bfe80 JB |
377 | continue; |
378 | } | |
379 | ||
d84a0f32 CW |
380 | if (connector->force == DRM_FORCE_OFF) { |
381 | DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n", | |
382 | connector->name); | |
383 | enabled[i] = false; | |
384 | continue; | |
385 | } | |
386 | ||
e28661bd ML |
387 | encoder = connector->state->best_encoder; |
388 | if (!encoder || WARN_ON(!connector->state->crtc)) { | |
d84a0f32 CW |
389 | if (connector->force > DRM_FORCE_OFF) |
390 | goto bail; | |
391 | ||
c0c97622 | 392 | DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n", |
c23cc417 | 393 | connector->name); |
eb1bfe80 | 394 | enabled[i] = false; |
86f40bb6 | 395 | conn_configured |= BIT(i); |
eb1bfe80 JB |
396 | continue; |
397 | } | |
398 | ||
7e696e4c DV |
399 | num_connectors_enabled++; |
400 | ||
86f40bb6 CW |
401 | new_crtc = intel_fb_helper_crtc(fb_helper, |
402 | connector->state->crtc); | |
eb1bfe80 JB |
403 | |
404 | /* | |
405 | * Make sure we're not trying to drive multiple connectors | |
406 | * with a single CRTC, since our cloning support may not | |
407 | * match the BIOS. | |
408 | */ | |
86f40bb6 | 409 | for (j = 0; j < count; j++) { |
02f5eebb | 410 | if (crtcs[j] == new_crtc) { |
7e696e4c | 411 | DRM_DEBUG_KMS("fallback: cloned configuration\n"); |
d84a0f32 | 412 | goto bail; |
02f5eebb | 413 | } |
eb1bfe80 JB |
414 | } |
415 | ||
c0c97622 | 416 | DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n", |
c23cc417 | 417 | connector->name); |
eb1bfe80 JB |
418 | |
419 | /* go for command line mode first */ | |
a09759e8 | 420 | modes[i] = drm_pick_cmdline_mode(fb_conn); |
eb1bfe80 JB |
421 | |
422 | /* try for preferred next */ | |
423 | if (!modes[i]) { | |
b0ee9e7f DA |
424 | DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n", |
425 | connector->name, connector->has_tile); | |
eb1bfe80 JB |
426 | modes[i] = drm_has_preferred_mode(fb_conn, width, |
427 | height); | |
428 | } | |
429 | ||
afba0b5a CW |
430 | /* No preferred mode marked by the EDID? Are there any modes? */ |
431 | if (!modes[i] && !list_empty(&connector->modes)) { | |
432 | DRM_DEBUG_KMS("using first mode listed on connector %s\n", | |
8d4ad9d4 | 433 | connector->name); |
afba0b5a CW |
434 | modes[i] = list_first_entry(&connector->modes, |
435 | struct drm_display_mode, | |
436 | head); | |
437 | } | |
438 | ||
eb1bfe80 JB |
439 | /* last resort: use current mode */ |
440 | if (!modes[i]) { | |
441 | /* | |
442 | * IMPORTANT: We want to use the adjusted mode (i.e. | |
443 | * after the panel fitter upscaling) as the initial | |
444 | * config, not the input mode, which is what crtc->mode | |
5c1e3426 | 445 | * usually contains. But since our current |
eb1bfe80 | 446 | * code puts a mode derived from the post-pfit timings |
5c1e3426 | 447 | * into crtc->mode this works out correctly. |
e28661bd ML |
448 | * |
449 | * This is crtc->mode and not crtc->state->mode for the | |
450 | * fastboot check to work correctly. crtc_state->mode has | |
451 | * I915_MODE_FLAG_INHERITED, which we clear to force check | |
452 | * state. | |
eb1bfe80 | 453 | */ |
c0c97622 | 454 | DRM_DEBUG_KMS("looking for current mode on connector %s\n", |
c23cc417 | 455 | connector->name); |
e28661bd | 456 | modes[i] = &connector->state->crtc->mode; |
eb1bfe80 JB |
457 | } |
458 | crtcs[i] = new_crtc; | |
459 | ||
78108b7c | 460 | DRM_DEBUG_KMS("connector %s on [CRTC:%d:%s]: %dx%d%s\n", |
c23cc417 | 461 | connector->name, |
e28661bd | 462 | connector->state->crtc->base.id, |
78108b7c | 463 | connector->state->crtc->name, |
c0c97622 CW |
464 | modes[i]->hdisplay, modes[i]->vdisplay, |
465 | modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" :""); | |
02f5eebb | 466 | |
7c2bb531 | 467 | fallback = false; |
86f40bb6 | 468 | conn_configured |= BIT(i); |
b0ee9e7f DA |
469 | } |
470 | ||
754a7659 | 471 | if ((conn_configured & mask) != mask && conn_configured != conn_seq) |
b0ee9e7f | 472 | goto retry; |
02f5eebb | 473 | |
7e696e4c DV |
474 | /* |
475 | * If the BIOS didn't enable everything it could, fall back to have the | |
476 | * same user experiencing of lighting up as much as possible like the | |
477 | * fbdev helper library. | |
478 | */ | |
479 | if (num_connectors_enabled != num_connectors_detected && | |
b7f05d4a | 480 | num_connectors_enabled < INTEL_INFO(dev_priv)->num_pipes) { |
7e696e4c DV |
481 | DRM_DEBUG_KMS("fallback: Not all outputs enabled\n"); |
482 | DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled, | |
483 | num_connectors_detected); | |
484 | fallback = true; | |
485 | } | |
486 | ||
7c2bb531 | 487 | if (fallback) { |
d84a0f32 | 488 | bail: |
7e696e4c | 489 | DRM_DEBUG_KMS("Not using firmware configuration\n"); |
86f40bb6 | 490 | memcpy(enabled, save_enabled, count); |
e13a0583 | 491 | ret = false; |
eb1bfe80 JB |
492 | } |
493 | ||
e13a0583 DV |
494 | drm_modeset_drop_locks(&ctx); |
495 | drm_modeset_acquire_fini(&ctx); | |
496 | ||
02f5eebb | 497 | kfree(save_enabled); |
e13a0583 | 498 | return ret; |
eb1bfe80 JB |
499 | } |
500 | ||
3a493879 | 501 | static const struct drm_fb_helper_funcs intel_fb_helper_funcs = { |
eb1bfe80 | 502 | .initial_config = intel_fb_initial_config, |
cd5428a5 | 503 | .fb_probe = intelfb_create, |
4abe3520 | 504 | }; |
79e53945 | 505 | |
43cee314 | 506 | static void intel_fbdev_destroy(struct intel_fbdev *ifbdev) |
79e53945 | 507 | { |
0c82312f CW |
508 | /* We rely on the object-free to release the VMA pinning for |
509 | * the info->screen_base mmaping. Leaking the VMA is simpler than | |
510 | * trying to rectify all the possible error paths leading here. | |
511 | */ | |
ddfe1567 | 512 | |
4abe3520 | 513 | drm_fb_helper_fini(&ifbdev->helper); |
79e53945 | 514 | |
15727ed0 | 515 | if (ifbdev->vma) { |
43cee314 | 516 | mutex_lock(&ifbdev->helper.dev->struct_mutex); |
be1e3415 | 517 | intel_unpin_fb_vma(ifbdev->vma); |
43cee314 | 518 | mutex_unlock(&ifbdev->helper.dev->struct_mutex); |
15727ed0 | 519 | } |
fb4b8ce1 | 520 | |
15727ed0 | 521 | if (ifbdev->fb) |
54632abe | 522 | drm_framebuffer_remove(&ifbdev->fb->base); |
43cee314 CW |
523 | |
524 | kfree(ifbdev); | |
79e53945 | 525 | } |
38651674 | 526 | |
d978ef14 JB |
527 | /* |
528 | * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible. | |
529 | * The core display code will have read out the current plane configuration, | |
530 | * so we use that to figure out if there's an object for us to use as the | |
531 | * fb, and if so, we re-use it for the fbdev configuration. | |
532 | * | |
533 | * Note we only support a single fb shared across pipes for boot (mostly for | |
534 | * fbcon), so we just find the biggest and use that. | |
535 | */ | |
536 | static bool intel_fbdev_init_bios(struct drm_device *dev, | |
537 | struct intel_fbdev *ifbdev) | |
538 | { | |
539 | struct intel_framebuffer *fb = NULL; | |
540 | struct drm_crtc *crtc; | |
541 | struct intel_crtc *intel_crtc; | |
d978ef14 JB |
542 | unsigned int max_size = 0; |
543 | ||
d978ef14 | 544 | /* Find the largest fb */ |
70e1e0ec | 545 | for_each_crtc(dev, crtc) { |
8e9ba31a ML |
546 | struct drm_i915_gem_object *obj = |
547 | intel_fb_obj(crtc->primary->state->fb); | |
d978ef14 JB |
548 | intel_crtc = to_intel_crtc(crtc); |
549 | ||
d5515991 | 550 | if (!crtc->state->active || !obj) { |
d978ef14 JB |
551 | DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n", |
552 | pipe_name(intel_crtc->pipe)); | |
553 | continue; | |
554 | } | |
555 | ||
8e9ba31a | 556 | if (obj->base.size > max_size) { |
d978ef14 JB |
557 | DRM_DEBUG_KMS("found possible fb from plane %c\n", |
558 | pipe_name(intel_crtc->pipe)); | |
8e9ba31a ML |
559 | fb = to_intel_framebuffer(crtc->primary->state->fb); |
560 | max_size = obj->base.size; | |
d978ef14 JB |
561 | } |
562 | } | |
563 | ||
564 | if (!fb) { | |
565 | DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n"); | |
566 | goto out; | |
567 | } | |
568 | ||
569 | /* Now make sure all the pipes will fit into it */ | |
70e1e0ec | 570 | for_each_crtc(dev, crtc) { |
d978ef14 JB |
571 | unsigned int cur_size; |
572 | ||
573 | intel_crtc = to_intel_crtc(crtc); | |
574 | ||
d5515991 | 575 | if (!crtc->state->active) { |
d978ef14 JB |
576 | DRM_DEBUG_KMS("pipe %c not active, skipping\n", |
577 | pipe_name(intel_crtc->pipe)); | |
578 | continue; | |
579 | } | |
580 | ||
581 | DRM_DEBUG_KMS("checking plane %c for BIOS fb\n", | |
582 | pipe_name(intel_crtc->pipe)); | |
583 | ||
584 | /* | |
585 | * See if the plane fb we found above will fit on this | |
bc104d1f CW |
586 | * pipe. Note we need to use the selected fb's pitch and bpp |
587 | * rather than the current pipe's, since they differ. | |
d978ef14 | 588 | */ |
6e3c9717 | 589 | cur_size = intel_crtc->config->base.adjusted_mode.crtc_hdisplay; |
272725c7 | 590 | cur_size = cur_size * fb->base.format->cpp[0]; |
bc104d1f CW |
591 | if (fb->base.pitches[0] < cur_size) { |
592 | DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n", | |
593 | pipe_name(intel_crtc->pipe), | |
594 | cur_size, fb->base.pitches[0]); | |
bc104d1f CW |
595 | fb = NULL; |
596 | break; | |
597 | } | |
598 | ||
6e3c9717 | 599 | cur_size = intel_crtc->config->base.adjusted_mode.crtc_vdisplay; |
d88c4afd | 600 | cur_size = intel_fb_align_height(&fb->base, 0, cur_size); |
bc104d1f CW |
601 | cur_size *= fb->base.pitches[0]; |
602 | DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n", | |
603 | pipe_name(intel_crtc->pipe), | |
6e3c9717 ACO |
604 | intel_crtc->config->base.adjusted_mode.crtc_hdisplay, |
605 | intel_crtc->config->base.adjusted_mode.crtc_vdisplay, | |
272725c7 | 606 | fb->base.format->cpp[0] * 8, |
d978ef14 | 607 | cur_size); |
d978ef14 JB |
608 | |
609 | if (cur_size > max_size) { | |
610 | DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n", | |
611 | pipe_name(intel_crtc->pipe), | |
612 | cur_size, max_size); | |
d978ef14 JB |
613 | fb = NULL; |
614 | break; | |
615 | } | |
616 | ||
617 | DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n", | |
618 | pipe_name(intel_crtc->pipe), | |
619 | max_size, cur_size); | |
620 | } | |
621 | ||
d978ef14 JB |
622 | if (!fb) { |
623 | DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n"); | |
624 | goto out; | |
625 | } | |
626 | ||
272725c7 | 627 | ifbdev->preferred_bpp = fb->base.format->cpp[0] * 8; |
d978ef14 JB |
628 | ifbdev->fb = fb; |
629 | ||
c3ed1103 | 630 | drm_framebuffer_get(&ifbdev->fb->base); |
d978ef14 JB |
631 | |
632 | /* Final pass to check if any active pipes don't have fbs */ | |
70e1e0ec | 633 | for_each_crtc(dev, crtc) { |
d978ef14 JB |
634 | intel_crtc = to_intel_crtc(crtc); |
635 | ||
d5515991 | 636 | if (!crtc->state->active) |
d978ef14 JB |
637 | continue; |
638 | ||
66e514c1 | 639 | WARN(!crtc->primary->fb, |
d978ef14 JB |
640 | "re-used BIOS config but lost an fb on crtc %d\n", |
641 | crtc->base.id); | |
642 | } | |
643 | ||
644 | ||
645 | DRM_DEBUG_KMS("using BIOS fb for initial console\n"); | |
646 | return true; | |
647 | ||
d978ef14 JB |
648 | out: |
649 | ||
650 | return false; | |
651 | } | |
652 | ||
82e3b8c1 CW |
653 | static void intel_fbdev_suspend_worker(struct work_struct *work) |
654 | { | |
91c8a326 CW |
655 | intel_fbdev_set_suspend(&container_of(work, |
656 | struct drm_i915_private, | |
657 | fbdev_suspend_work)->drm, | |
82e3b8c1 CW |
658 | FBINFO_STATE_RUNNING, |
659 | true); | |
660 | } | |
661 | ||
38651674 DA |
662 | int intel_fbdev_init(struct drm_device *dev) |
663 | { | |
fac5e23e | 664 | struct drm_i915_private *dev_priv = to_i915(dev); |
b7f05d4a | 665 | struct intel_fbdev *ifbdev; |
5a79395b | 666 | int ret; |
8be48d92 | 667 | |
b7f05d4a | 668 | if (WARN_ON(INTEL_INFO(dev_priv)->num_pipes == 0)) |
d978ef14 JB |
669 | return -ENODEV; |
670 | ||
671 | ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); | |
672 | if (ifbdev == NULL) | |
8be48d92 DA |
673 | return -ENOMEM; |
674 | ||
10a23102 TR |
675 | drm_fb_helper_prepare(dev, &ifbdev->helper, &intel_fb_helper_funcs); |
676 | ||
d978ef14 JB |
677 | if (!intel_fbdev_init_bios(dev, ifbdev)) |
678 | ifbdev->preferred_bpp = 32; | |
4abe3520 | 679 | |
e4563f6b | 680 | ret = drm_fb_helper_init(dev, &ifbdev->helper, 4); |
5a79395b CW |
681 | if (ret) { |
682 | kfree(ifbdev); | |
683 | return ret; | |
684 | } | |
8be48d92 | 685 | |
d978ef14 | 686 | dev_priv->fbdev = ifbdev; |
82e3b8c1 CW |
687 | INIT_WORK(&dev_priv->fbdev_suspend_work, intel_fbdev_suspend_worker); |
688 | ||
0b4c0f3f | 689 | drm_fb_helper_single_add_all_connectors(&ifbdev->helper); |
20afbda2 | 690 | |
79e53945 JB |
691 | return 0; |
692 | } | |
38651674 | 693 | |
e00bf696 | 694 | static void intel_fbdev_initial_config(void *data, async_cookie_t cookie) |
20afbda2 | 695 | { |
43cee314 | 696 | struct intel_fbdev *ifbdev = data; |
20afbda2 DV |
697 | |
698 | /* Due to peculiar init order wrt to hpd handling this is separate. */ | |
366e39b4 | 699 | if (drm_fb_helper_initial_config(&ifbdev->helper, |
a45b30a6 | 700 | ifbdev->preferred_bpp)) |
4f256d82 | 701 | intel_fbdev_unregister(to_i915(ifbdev->helper.dev)); |
20afbda2 DV |
702 | } |
703 | ||
e00bf696 VS |
704 | void intel_fbdev_initial_config_async(struct drm_device *dev) |
705 | { | |
43cee314 CW |
706 | struct intel_fbdev *ifbdev = to_i915(dev)->fbdev; |
707 | ||
5b8cd075 CT |
708 | if (!ifbdev) |
709 | return; | |
710 | ||
43cee314 CW |
711 | ifbdev->cookie = async_schedule(intel_fbdev_initial_config, ifbdev); |
712 | } | |
713 | ||
714 | static void intel_fbdev_sync(struct intel_fbdev *ifbdev) | |
715 | { | |
716 | if (!ifbdev->cookie) | |
717 | return; | |
718 | ||
719 | /* Only serialises with all preceding async calls, hence +1 */ | |
720 | async_synchronize_cookie(ifbdev->cookie + 1); | |
721 | ifbdev->cookie = 0; | |
e00bf696 VS |
722 | } |
723 | ||
4f256d82 | 724 | void intel_fbdev_unregister(struct drm_i915_private *dev_priv) |
38651674 | 725 | { |
43cee314 CW |
726 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
727 | ||
728 | if (!ifbdev) | |
8be48d92 DA |
729 | return; |
730 | ||
0b8c0e9c | 731 | cancel_work_sync(&dev_priv->fbdev_suspend_work); |
366e39b4 | 732 | if (!current_is_async()) |
43cee314 CW |
733 | intel_fbdev_sync(ifbdev); |
734 | ||
4f256d82 DV |
735 | drm_fb_helper_unregister_fbi(&ifbdev->helper); |
736 | } | |
737 | ||
738 | void intel_fbdev_fini(struct drm_i915_private *dev_priv) | |
739 | { | |
740 | struct intel_fbdev *ifbdev = fetch_and_zero(&dev_priv->fbdev); | |
741 | ||
742 | if (!ifbdev) | |
743 | return; | |
744 | ||
43cee314 | 745 | intel_fbdev_destroy(ifbdev); |
38651674 | 746 | } |
3fa016a0 | 747 | |
82e3b8c1 | 748 | void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous) |
3fa016a0 | 749 | { |
fac5e23e | 750 | struct drm_i915_private *dev_priv = to_i915(dev); |
1ffc5289 JN |
751 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
752 | struct fb_info *info; | |
753 | ||
15727ed0 | 754 | if (!ifbdev || !ifbdev->vma) |
3fa016a0 DA |
755 | return; |
756 | ||
1ffc5289 JN |
757 | info = ifbdev->helper.fbdev; |
758 | ||
82e3b8c1 CW |
759 | if (synchronous) { |
760 | /* Flush any pending work to turn the console on, and then | |
761 | * wait to turn it off. It must be synchronous as we are | |
762 | * about to suspend or unload the driver. | |
763 | * | |
764 | * Note that from within the work-handler, we cannot flush | |
765 | * ourselves, so only flush outstanding work upon suspend! | |
766 | */ | |
767 | if (state != FBINFO_STATE_RUNNING) | |
768 | flush_work(&dev_priv->fbdev_suspend_work); | |
769 | console_lock(); | |
770 | } else { | |
771 | /* | |
772 | * The console lock can be pretty contented on resume due | |
773 | * to all the printk activity. Try to keep it out of the hot | |
774 | * path of resume if possible. | |
775 | */ | |
776 | WARN_ON(state != FBINFO_STATE_RUNNING); | |
777 | if (!console_trylock()) { | |
778 | /* Don't block our own workqueue as this can | |
779 | * be run in parallel with other i915.ko tasks. | |
780 | */ | |
781 | schedule_work(&dev_priv->fbdev_suspend_work); | |
782 | return; | |
783 | } | |
784 | } | |
785 | ||
1ffc5289 JN |
786 | /* On resume from hibernation: If the object is shmemfs backed, it has |
787 | * been restored from swap. If the object is stolen however, it will be | |
788 | * full of whatever garbage was left in there. | |
789 | */ | |
8bcd4553 | 790 | if (state == FBINFO_STATE_RUNNING && ifbdev->fb->obj->stolen) |
1ffc5289 JN |
791 | memset_io(info->screen_base, 0, info->screen_size); |
792 | ||
21cff148 | 793 | drm_fb_helper_set_suspend(&ifbdev->helper, state); |
82e3b8c1 | 794 | console_unlock(); |
3fa016a0 DA |
795 | } |
796 | ||
0632fef6 | 797 | void intel_fbdev_output_poll_changed(struct drm_device *dev) |
eb1f8e4f | 798 | { |
c45eb4fe CW |
799 | struct intel_fbdev *ifbdev = to_i915(dev)->fbdev; |
800 | ||
a45b30a6 CW |
801 | if (!ifbdev) |
802 | return; | |
803 | ||
804 | intel_fbdev_sync(ifbdev); | |
805 | if (ifbdev->vma) | |
c45eb4fe | 806 | drm_fb_helper_hotplug_event(&ifbdev->helper); |
eb1f8e4f | 807 | } |
e8e7a2b8 | 808 | |
0632fef6 | 809 | void intel_fbdev_restore_mode(struct drm_device *dev) |
e8e7a2b8 | 810 | { |
c45eb4fe | 811 | struct intel_fbdev *ifbdev = to_i915(dev)->fbdev; |
e8e7a2b8 | 812 | |
d04df732 | 813 | if (!ifbdev) |
e3c74757 BW |
814 | return; |
815 | ||
e77018f7 | 816 | intel_fbdev_sync(ifbdev); |
15727ed0 | 817 | if (!ifbdev->vma) |
c45eb4fe | 818 | return; |
e77018f7 | 819 | |
fabef825 CW |
820 | if (drm_fb_helper_restore_fbdev_mode_unlocked(&ifbdev->helper) == 0) |
821 | intel_fbdev_invalidate(ifbdev); | |
e8e7a2b8 | 822 | } |