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) { | |
e991077e | 58 | mutex_lock(&fb_helper->dev->struct_mutex); |
aba6da3e | 59 | intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); |
e991077e DV |
60 | mutex_unlock(&fb_helper->dev->struct_mutex); |
61 | } | |
62 | ||
63 | return ret; | |
64 | } | |
65 | ||
03e515f7 RV |
66 | static int intel_fbdev_blank(int blank, struct fb_info *info) |
67 | { | |
68 | struct drm_fb_helper *fb_helper = info->par; | |
69 | struct intel_fbdev *ifbdev = | |
70 | container_of(fb_helper, struct intel_fbdev, helper); | |
71 | int ret; | |
72 | ||
73 | ret = drm_fb_helper_blank(blank, info); | |
74 | ||
75 | if (ret == 0) { | |
03e515f7 | 76 | mutex_lock(&fb_helper->dev->struct_mutex); |
77a0d1ca | 77 | intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); |
03e515f7 RV |
78 | mutex_unlock(&fb_helper->dev->struct_mutex); |
79 | } | |
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); | |
90 | ||
91 | int ret; | |
92 | ret = drm_fb_helper_pan_display(var, info); | |
93 | ||
94 | if (ret == 0) { | |
d9a946b5 | 95 | mutex_lock(&fb_helper->dev->struct_mutex); |
77a0d1ca | 96 | intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); |
d9a946b5 RV |
97 | mutex_unlock(&fb_helper->dev->struct_mutex); |
98 | } | |
99 | ||
100 | return ret; | |
101 | } | |
102 | ||
79e53945 JB |
103 | static struct fb_ops intelfb_ops = { |
104 | .owner = THIS_MODULE, | |
785b93ef | 105 | .fb_check_var = drm_fb_helper_check_var, |
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, |
068143d3 | 112 | .fb_setcmap = drm_fb_helper_setcmap, |
81255565 JB |
113 | .fb_debug_enter = drm_fb_helper_debug_enter, |
114 | .fb_debug_leave = drm_fb_helper_debug_leave, | |
79e53945 JB |
115 | }; |
116 | ||
8b4f49e0 JB |
117 | static int intelfb_alloc(struct drm_fb_helper *helper, |
118 | struct drm_fb_helper_surface_size *sizes) | |
79e53945 | 119 | { |
3430824b VS |
120 | struct intel_fbdev *ifbdev = |
121 | container_of(helper, struct intel_fbdev, helper); | |
51f1385b | 122 | struct drm_framebuffer *fb = NULL; |
3430824b | 123 | struct drm_device *dev = helper->dev; |
3badb49f | 124 | struct drm_i915_private *dev_priv = to_i915(dev); |
3a7f2f6a | 125 | struct drm_mode_fb_cmd2 mode_cmd = {}; |
3badb49f | 126 | struct drm_i915_gem_object *obj = NULL; |
57084d05 | 127 | int size, ret; |
79e53945 | 128 | |
b8c00ac5 | 129 | /* we don't do packed 24bpp */ |
38651674 DA |
130 | if (sizes->surface_bpp == 24) |
131 | sizes->surface_bpp = 32; | |
b8c00ac5 | 132 | |
38651674 DA |
133 | mode_cmd.width = sizes->surface_width; |
134 | mode_cmd.height = sizes->surface_height; | |
79e53945 | 135 | |
de45eaf7 PZ |
136 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * |
137 | DIV_ROUND_UP(sizes->surface_bpp, 8), 64); | |
308e5bcb JB |
138 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, |
139 | sizes->surface_depth); | |
79e53945 | 140 | |
51f1385b TU |
141 | mutex_lock(&dev->struct_mutex); |
142 | ||
308e5bcb | 143 | size = mode_cmd.pitches[0] * mode_cmd.height; |
1267a26b | 144 | size = PAGE_ALIGN(size); |
3badb49f PZ |
145 | |
146 | /* If the FB is too big, just don't use it since fbdev is not very | |
147 | * important and we should probably use that space with FBC or other | |
148 | * features. */ | |
149 | if (size * 2 < dev_priv->gtt.stolen_usable_size) | |
150 | obj = i915_gem_object_create_stolen(dev, size); | |
0ffb0ff2 CW |
151 | if (obj == NULL) |
152 | obj = i915_gem_alloc_object(dev, size); | |
05394f39 | 153 | if (!obj) { |
1ae8c0a5 | 154 | DRM_ERROR("failed to allocate framebuffer\n"); |
79e53945 JB |
155 | ret = -ENOMEM; |
156 | goto out; | |
157 | } | |
79e53945 | 158 | |
a8bb6818 DV |
159 | fb = __intel_framebuffer_create(dev, &mode_cmd, obj); |
160 | if (IS_ERR(fb)) { | |
ca40ba85 | 161 | drm_gem_object_unreference(&obj->base); |
a8bb6818 | 162 | ret = PTR_ERR(fb); |
ca40ba85 | 163 | goto out; |
850c4cdc TU |
164 | } |
165 | ||
166 | /* Flush everything out, we'll be doing GTT only from now on */ | |
7580d774 | 167 | ret = intel_pin_and_fence_fb_obj(NULL, fb, NULL); |
850c4cdc TU |
168 | if (ret) { |
169 | DRM_ERROR("failed to pin obj: %d\n", ret); | |
51f1385b | 170 | goto out; |
a8bb6818 DV |
171 | } |
172 | ||
51f1385b TU |
173 | mutex_unlock(&dev->struct_mutex); |
174 | ||
a8bb6818 | 175 | ifbdev->fb = to_intel_framebuffer(fb); |
8b4f49e0 JB |
176 | |
177 | return 0; | |
178 | ||
8b4f49e0 | 179 | out: |
51f1385b TU |
180 | mutex_unlock(&dev->struct_mutex); |
181 | if (!IS_ERR_OR_NULL(fb)) | |
182 | drm_framebuffer_unreference(fb); | |
8b4f49e0 JB |
183 | return ret; |
184 | } | |
185 | ||
186 | static int intelfb_create(struct drm_fb_helper *helper, | |
187 | struct drm_fb_helper_surface_size *sizes) | |
188 | { | |
189 | struct intel_fbdev *ifbdev = | |
190 | container_of(helper, struct intel_fbdev, helper); | |
8bcd4553 | 191 | struct intel_framebuffer *intel_fb = ifbdev->fb; |
8b4f49e0 JB |
192 | struct drm_device *dev = helper->dev; |
193 | struct drm_i915_private *dev_priv = dev->dev_private; | |
194 | struct fb_info *info; | |
195 | struct drm_framebuffer *fb; | |
196 | struct drm_i915_gem_object *obj; | |
197 | int size, ret; | |
d978ef14 | 198 | bool prealloc = false; |
8b4f49e0 | 199 | |
edd586fe CW |
200 | if (intel_fb && |
201 | (sizes->fb_width > intel_fb->base.width || | |
202 | sizes->fb_height > intel_fb->base.height)) { | |
203 | DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d)," | |
204 | " releasing it\n", | |
205 | intel_fb->base.width, intel_fb->base.height, | |
206 | sizes->fb_width, sizes->fb_height); | |
207 | drm_framebuffer_unreference(&intel_fb->base); | |
208 | intel_fb = ifbdev->fb = NULL; | |
209 | } | |
8bcd4553 | 210 | if (!intel_fb || WARN_ON(!intel_fb->obj)) { |
48e92120 | 211 | DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n"); |
8b4f49e0 JB |
212 | ret = intelfb_alloc(helper, sizes); |
213 | if (ret) | |
51f1385b | 214 | return ret; |
8bcd4553 | 215 | intel_fb = ifbdev->fb; |
8b4f49e0 | 216 | } else { |
48e92120 | 217 | DRM_DEBUG_KMS("re-using BIOS fb\n"); |
d978ef14 | 218 | prealloc = true; |
8b4f49e0 JB |
219 | sizes->fb_width = intel_fb->base.width; |
220 | sizes->fb_height = intel_fb->base.height; | |
221 | } | |
222 | ||
223 | obj = intel_fb->obj; | |
224 | size = obj->base.size; | |
225 | ||
51f1385b TU |
226 | mutex_lock(&dev->struct_mutex); |
227 | ||
21cff148 AT |
228 | info = drm_fb_helper_alloc_fbi(helper); |
229 | if (IS_ERR(info)) { | |
366e39b4 | 230 | DRM_ERROR("Failed to allocate fb_info\n"); |
21cff148 | 231 | ret = PTR_ERR(info); |
b4476f52 | 232 | goto out_unpin; |
79e53945 JB |
233 | } |
234 | ||
3430824b | 235 | info->par = helper; |
79e53945 | 236 | |
8bcd4553 | 237 | fb = &ifbdev->fb->base; |
79e53945 | 238 | |
38651674 | 239 | ifbdev->helper.fb = fb; |
785b93ef | 240 | |
79e53945 | 241 | strcpy(info->fix.id, "inteldrmfb"); |
79e53945 | 242 | |
8fd4bd22 | 243 | info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; |
79e53945 JB |
244 | info->fbops = &intelfb_ops; |
245 | ||
4410f391 | 246 | /* setup aperture base/size for vesafb takeover */ |
1471ca9a | 247 | info->apertures->ranges[0].base = dev->mode_config.fb_base; |
93d18799 | 248 | info->apertures->ranges[0].size = dev_priv->gtt.mappable_end; |
4410f391 | 249 | |
f343c5f6 | 250 | info->fix.smem_start = dev->mode_config.fb_base + i915_gem_obj_ggtt_offset(obj); |
79e53945 JB |
251 | info->fix.smem_len = size; |
252 | ||
dd2757f8 | 253 | info->screen_base = |
f343c5f6 | 254 | ioremap_wc(dev_priv->gtt.mappable_base + i915_gem_obj_ggtt_offset(obj), |
dd2757f8 | 255 | size); |
79e53945 | 256 | if (!info->screen_base) { |
366e39b4 | 257 | DRM_ERROR("Failed to remap framebuffer into virtual memory\n"); |
79e53945 | 258 | ret = -ENOSPC; |
21cff148 | 259 | goto out_destroy_fbi; |
79e53945 JB |
260 | } |
261 | info->screen_size = size; | |
262 | ||
24576d23 JB |
263 | /* This driver doesn't need a VT switch to restore the mode on resume */ |
264 | info->skip_vt_switch = true; | |
265 | ||
01f2c773 | 266 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
38651674 | 267 | drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height); |
79e53945 | 268 | |
88afe715 CW |
269 | /* If the object is shmemfs backed, it will have given us zeroed pages. |
270 | * If the object is stolen however, it will be full of whatever | |
271 | * garbage was left in there. | |
272 | */ | |
d978ef14 | 273 | if (ifbdev->fb->obj->stolen && !prealloc) |
88afe715 CW |
274 | memset_io(info->screen_base, 0, info->screen_size); |
275 | ||
fb2a99e1 | 276 | /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ |
79e53945 | 277 | |
088e0df4 | 278 | DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08llx, bo %p\n", |
8be48d92 | 279 | fb->width, fb->height, |
f343c5f6 | 280 | i915_gem_obj_ggtt_offset(obj), obj); |
79e53945 JB |
281 | |
282 | mutex_unlock(&dev->struct_mutex); | |
6a9ee8af | 283 | vga_switcheroo_client_fb_set(dev->pdev, info); |
79e53945 JB |
284 | return 0; |
285 | ||
21cff148 AT |
286 | out_destroy_fbi: |
287 | drm_fb_helper_release_fbi(helper); | |
b4476f52 | 288 | out_unpin: |
d7f46fc4 | 289 | i915_gem_object_ggtt_unpin(obj); |
79e53945 | 290 | mutex_unlock(&dev->struct_mutex); |
79e53945 JB |
291 | return ret; |
292 | } | |
293 | ||
67437680 PZ |
294 | /** Sets the color ramps on behalf of RandR */ |
295 | static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, | |
296 | u16 blue, int regno) | |
297 | { | |
298 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
299 | ||
300 | intel_crtc->lut_r[regno] = red >> 8; | |
301 | intel_crtc->lut_g[regno] = green >> 8; | |
302 | intel_crtc->lut_b[regno] = blue >> 8; | |
303 | } | |
304 | ||
305 | static void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, | |
306 | u16 *blue, int regno) | |
307 | { | |
308 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
309 | ||
310 | *red = intel_crtc->lut_r[regno] << 8; | |
311 | *green = intel_crtc->lut_g[regno] << 8; | |
312 | *blue = intel_crtc->lut_b[regno] << 8; | |
313 | } | |
314 | ||
eb1bfe80 JB |
315 | static struct drm_fb_helper_crtc * |
316 | intel_fb_helper_crtc(struct drm_fb_helper *fb_helper, struct drm_crtc *crtc) | |
317 | { | |
318 | int i; | |
319 | ||
320 | for (i = 0; i < fb_helper->crtc_count; i++) | |
321 | if (fb_helper->crtc_info[i].mode_set.crtc == crtc) | |
322 | return &fb_helper->crtc_info[i]; | |
323 | ||
324 | return NULL; | |
325 | } | |
326 | ||
327 | /* | |
328 | * Try to read the BIOS display configuration and use it for the initial | |
329 | * fb configuration. | |
330 | * | |
331 | * The BIOS or boot loader will generally create an initial display | |
332 | * configuration for us that includes some set of active pipes and displays. | |
333 | * This routine tries to figure out which pipes and connectors are active | |
334 | * and stuffs them into the crtcs and modes array given to us by the | |
335 | * drm_fb_helper code. | |
336 | * | |
337 | * The overall sequence is: | |
338 | * intel_fbdev_init - from driver load | |
339 | * intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data | |
340 | * drm_fb_helper_init - build fb helper structs | |
341 | * drm_fb_helper_single_add_all_connectors - more fb helper structs | |
342 | * intel_fbdev_initial_config - apply the config | |
343 | * drm_fb_helper_initial_config - call ->probe then register_framebuffer() | |
344 | * drm_setup_crtcs - build crtc config for fbdev | |
345 | * intel_fb_initial_config - find active connectors etc | |
346 | * drm_fb_helper_single_fb_probe - set up fbdev | |
347 | * intelfb_create - re-use or alloc fb, build out fbdev structs | |
348 | * | |
349 | * Note that we don't make special consideration whether we could actually | |
350 | * switch to the selected modes without a full modeset. E.g. when the display | |
351 | * is in VGA mode we need to recalculate watermarks and set a new high-res | |
352 | * framebuffer anyway. | |
353 | */ | |
354 | static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper, | |
355 | struct drm_fb_helper_crtc **crtcs, | |
356 | struct drm_display_mode **modes, | |
b0ee9e7f | 357 | struct drm_fb_offset *offsets, |
eb1bfe80 JB |
358 | bool *enabled, int width, int height) |
359 | { | |
02f5eebb | 360 | struct drm_device *dev = fb_helper->dev; |
eb1bfe80 | 361 | int i, j; |
02f5eebb | 362 | bool *save_enabled; |
7c2bb531 | 363 | bool fallback = true; |
7e696e4c DV |
364 | int num_connectors_enabled = 0; |
365 | int num_connectors_detected = 0; | |
b0ee9e7f DA |
366 | uint64_t conn_configured = 0, mask; |
367 | int pass = 0; | |
02f5eebb JB |
368 | |
369 | save_enabled = kcalloc(dev->mode_config.num_connector, sizeof(bool), | |
370 | GFP_KERNEL); | |
371 | if (!save_enabled) | |
372 | return false; | |
373 | ||
374 | memcpy(save_enabled, enabled, dev->mode_config.num_connector); | |
b0ee9e7f DA |
375 | mask = (1 << fb_helper->connector_count) - 1; |
376 | retry: | |
eb1bfe80 JB |
377 | for (i = 0; i < fb_helper->connector_count; i++) { |
378 | struct drm_fb_helper_connector *fb_conn; | |
379 | struct drm_connector *connector; | |
380 | struct drm_encoder *encoder; | |
381 | struct drm_fb_helper_crtc *new_crtc; | |
382 | ||
383 | fb_conn = fb_helper->connector_info[i]; | |
384 | connector = fb_conn->connector; | |
7e696e4c | 385 | |
b0ee9e7f DA |
386 | if (conn_configured & (1 << i)) |
387 | continue; | |
388 | ||
389 | if (pass == 0 && !connector->has_tile) | |
390 | continue; | |
391 | ||
7e696e4c DV |
392 | if (connector->status == connector_status_connected) |
393 | num_connectors_detected++; | |
394 | ||
eb1bfe80 | 395 | if (!enabled[i]) { |
c0c97622 | 396 | DRM_DEBUG_KMS("connector %s not enabled, skipping\n", |
c23cc417 | 397 | connector->name); |
b0ee9e7f | 398 | conn_configured |= (1 << i); |
eb1bfe80 JB |
399 | continue; |
400 | } | |
401 | ||
d84a0f32 CW |
402 | if (connector->force == DRM_FORCE_OFF) { |
403 | DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n", | |
404 | connector->name); | |
405 | enabled[i] = false; | |
406 | continue; | |
407 | } | |
408 | ||
eb1bfe80 JB |
409 | encoder = connector->encoder; |
410 | if (!encoder || WARN_ON(!encoder->crtc)) { | |
d84a0f32 CW |
411 | if (connector->force > DRM_FORCE_OFF) |
412 | goto bail; | |
413 | ||
c0c97622 | 414 | DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n", |
c23cc417 | 415 | connector->name); |
eb1bfe80 | 416 | enabled[i] = false; |
b0ee9e7f | 417 | conn_configured |= (1 << i); |
eb1bfe80 JB |
418 | continue; |
419 | } | |
420 | ||
7e696e4c DV |
421 | num_connectors_enabled++; |
422 | ||
eb1bfe80 JB |
423 | new_crtc = intel_fb_helper_crtc(fb_helper, encoder->crtc); |
424 | ||
425 | /* | |
426 | * Make sure we're not trying to drive multiple connectors | |
427 | * with a single CRTC, since our cloning support may not | |
428 | * match the BIOS. | |
429 | */ | |
430 | for (j = 0; j < fb_helper->connector_count; j++) { | |
02f5eebb | 431 | if (crtcs[j] == new_crtc) { |
7e696e4c | 432 | DRM_DEBUG_KMS("fallback: cloned configuration\n"); |
d84a0f32 | 433 | goto bail; |
02f5eebb | 434 | } |
eb1bfe80 JB |
435 | } |
436 | ||
c0c97622 | 437 | DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n", |
c23cc417 | 438 | connector->name); |
eb1bfe80 JB |
439 | |
440 | /* go for command line mode first */ | |
441 | modes[i] = drm_pick_cmdline_mode(fb_conn, width, height); | |
442 | ||
443 | /* try for preferred next */ | |
444 | if (!modes[i]) { | |
b0ee9e7f DA |
445 | DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n", |
446 | connector->name, connector->has_tile); | |
eb1bfe80 JB |
447 | modes[i] = drm_has_preferred_mode(fb_conn, width, |
448 | height); | |
449 | } | |
450 | ||
afba0b5a CW |
451 | /* No preferred mode marked by the EDID? Are there any modes? */ |
452 | if (!modes[i] && !list_empty(&connector->modes)) { | |
453 | DRM_DEBUG_KMS("using first mode listed on connector %s\n", | |
8d4ad9d4 | 454 | connector->name); |
afba0b5a CW |
455 | modes[i] = list_first_entry(&connector->modes, |
456 | struct drm_display_mode, | |
457 | head); | |
458 | } | |
459 | ||
eb1bfe80 JB |
460 | /* last resort: use current mode */ |
461 | if (!modes[i]) { | |
462 | /* | |
463 | * IMPORTANT: We want to use the adjusted mode (i.e. | |
464 | * after the panel fitter upscaling) as the initial | |
465 | * config, not the input mode, which is what crtc->mode | |
5c1e3426 | 466 | * usually contains. But since our current |
eb1bfe80 | 467 | * code puts a mode derived from the post-pfit timings |
5c1e3426 | 468 | * into crtc->mode this works out correctly. |
eb1bfe80 | 469 | */ |
c0c97622 | 470 | DRM_DEBUG_KMS("looking for current mode on connector %s\n", |
c23cc417 | 471 | connector->name); |
5c1e3426 | 472 | modes[i] = &encoder->crtc->mode; |
eb1bfe80 JB |
473 | } |
474 | crtcs[i] = new_crtc; | |
475 | ||
fdaf66de | 476 | DRM_DEBUG_KMS("connector %s on pipe %c [CRTC:%d]: %dx%d%s\n", |
c23cc417 | 477 | connector->name, |
c0c97622 | 478 | pipe_name(to_intel_crtc(encoder->crtc)->pipe), |
eb1bfe80 | 479 | encoder->crtc->base.id, |
c0c97622 CW |
480 | modes[i]->hdisplay, modes[i]->vdisplay, |
481 | modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" :""); | |
02f5eebb | 482 | |
7c2bb531 | 483 | fallback = false; |
b0ee9e7f DA |
484 | conn_configured |= (1 << i); |
485 | } | |
486 | ||
487 | if ((conn_configured & mask) != mask) { | |
488 | pass++; | |
489 | goto retry; | |
02f5eebb JB |
490 | } |
491 | ||
7e696e4c DV |
492 | /* |
493 | * If the BIOS didn't enable everything it could, fall back to have the | |
494 | * same user experiencing of lighting up as much as possible like the | |
495 | * fbdev helper library. | |
496 | */ | |
497 | if (num_connectors_enabled != num_connectors_detected && | |
498 | num_connectors_enabled < INTEL_INFO(dev)->num_pipes) { | |
499 | DRM_DEBUG_KMS("fallback: Not all outputs enabled\n"); | |
500 | DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled, | |
501 | num_connectors_detected); | |
502 | fallback = true; | |
503 | } | |
504 | ||
7c2bb531 | 505 | if (fallback) { |
d84a0f32 | 506 | bail: |
7e696e4c | 507 | DRM_DEBUG_KMS("Not using firmware configuration\n"); |
02f5eebb JB |
508 | memcpy(enabled, save_enabled, dev->mode_config.num_connector); |
509 | kfree(save_enabled); | |
510 | return false; | |
eb1bfe80 JB |
511 | } |
512 | ||
02f5eebb | 513 | kfree(save_enabled); |
eb1bfe80 JB |
514 | return true; |
515 | } | |
516 | ||
3a493879 | 517 | static const struct drm_fb_helper_funcs intel_fb_helper_funcs = { |
eb1bfe80 | 518 | .initial_config = intel_fb_initial_config, |
4abe3520 DA |
519 | .gamma_set = intel_crtc_fb_gamma_set, |
520 | .gamma_get = intel_crtc_fb_gamma_get, | |
cd5428a5 | 521 | .fb_probe = intelfb_create, |
4abe3520 | 522 | }; |
79e53945 | 523 | |
7b4f3990 CW |
524 | static void intel_fbdev_destroy(struct drm_device *dev, |
525 | struct intel_fbdev *ifbdev) | |
79e53945 | 526 | { |
ddfe1567 | 527 | |
21cff148 AT |
528 | drm_fb_helper_unregister_fbi(&ifbdev->helper); |
529 | drm_fb_helper_release_fbi(&ifbdev->helper); | |
79e53945 | 530 | |
4abe3520 | 531 | drm_fb_helper_fini(&ifbdev->helper); |
79e53945 | 532 | |
54632abe LW |
533 | if (ifbdev->fb) { |
534 | drm_framebuffer_unregister_private(&ifbdev->fb->base); | |
535 | drm_framebuffer_remove(&ifbdev->fb->base); | |
536 | } | |
79e53945 | 537 | } |
38651674 | 538 | |
d978ef14 JB |
539 | /* |
540 | * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible. | |
541 | * The core display code will have read out the current plane configuration, | |
542 | * so we use that to figure out if there's an object for us to use as the | |
543 | * fb, and if so, we re-use it for the fbdev configuration. | |
544 | * | |
545 | * Note we only support a single fb shared across pipes for boot (mostly for | |
546 | * fbcon), so we just find the biggest and use that. | |
547 | */ | |
548 | static bool intel_fbdev_init_bios(struct drm_device *dev, | |
549 | struct intel_fbdev *ifbdev) | |
550 | { | |
551 | struct intel_framebuffer *fb = NULL; | |
552 | struct drm_crtc *crtc; | |
553 | struct intel_crtc *intel_crtc; | |
d978ef14 JB |
554 | unsigned int max_size = 0; |
555 | ||
d978ef14 | 556 | /* Find the largest fb */ |
70e1e0ec | 557 | for_each_crtc(dev, crtc) { |
8e9ba31a ML |
558 | struct drm_i915_gem_object *obj = |
559 | intel_fb_obj(crtc->primary->state->fb); | |
d978ef14 JB |
560 | intel_crtc = to_intel_crtc(crtc); |
561 | ||
d5515991 | 562 | if (!crtc->state->active || !obj) { |
d978ef14 JB |
563 | DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n", |
564 | pipe_name(intel_crtc->pipe)); | |
565 | continue; | |
566 | } | |
567 | ||
8e9ba31a | 568 | if (obj->base.size > max_size) { |
d978ef14 JB |
569 | DRM_DEBUG_KMS("found possible fb from plane %c\n", |
570 | pipe_name(intel_crtc->pipe)); | |
8e9ba31a ML |
571 | fb = to_intel_framebuffer(crtc->primary->state->fb); |
572 | max_size = obj->base.size; | |
d978ef14 JB |
573 | } |
574 | } | |
575 | ||
576 | if (!fb) { | |
577 | DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n"); | |
578 | goto out; | |
579 | } | |
580 | ||
581 | /* Now make sure all the pipes will fit into it */ | |
70e1e0ec | 582 | for_each_crtc(dev, crtc) { |
d978ef14 JB |
583 | unsigned int cur_size; |
584 | ||
585 | intel_crtc = to_intel_crtc(crtc); | |
586 | ||
d5515991 | 587 | if (!crtc->state->active) { |
d978ef14 JB |
588 | DRM_DEBUG_KMS("pipe %c not active, skipping\n", |
589 | pipe_name(intel_crtc->pipe)); | |
590 | continue; | |
591 | } | |
592 | ||
593 | DRM_DEBUG_KMS("checking plane %c for BIOS fb\n", | |
594 | pipe_name(intel_crtc->pipe)); | |
595 | ||
596 | /* | |
597 | * See if the plane fb we found above will fit on this | |
bc104d1f CW |
598 | * pipe. Note we need to use the selected fb's pitch and bpp |
599 | * rather than the current pipe's, since they differ. | |
d978ef14 | 600 | */ |
6e3c9717 | 601 | cur_size = intel_crtc->config->base.adjusted_mode.crtc_hdisplay; |
bc104d1f CW |
602 | cur_size = cur_size * fb->base.bits_per_pixel / 8; |
603 | if (fb->base.pitches[0] < cur_size) { | |
604 | DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n", | |
605 | pipe_name(intel_crtc->pipe), | |
606 | cur_size, fb->base.pitches[0]); | |
bc104d1f CW |
607 | fb = NULL; |
608 | break; | |
609 | } | |
610 | ||
6e3c9717 | 611 | cur_size = intel_crtc->config->base.adjusted_mode.crtc_vdisplay; |
ec2c981e | 612 | cur_size = intel_fb_align_height(dev, cur_size, |
091df6cb DV |
613 | fb->base.pixel_format, |
614 | fb->base.modifier[0]); | |
bc104d1f CW |
615 | cur_size *= fb->base.pitches[0]; |
616 | DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n", | |
617 | pipe_name(intel_crtc->pipe), | |
6e3c9717 ACO |
618 | intel_crtc->config->base.adjusted_mode.crtc_hdisplay, |
619 | intel_crtc->config->base.adjusted_mode.crtc_vdisplay, | |
bc104d1f | 620 | fb->base.bits_per_pixel, |
d978ef14 | 621 | cur_size); |
d978ef14 JB |
622 | |
623 | if (cur_size > max_size) { | |
624 | DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n", | |
625 | pipe_name(intel_crtc->pipe), | |
626 | cur_size, max_size); | |
d978ef14 JB |
627 | fb = NULL; |
628 | break; | |
629 | } | |
630 | ||
631 | DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n", | |
632 | pipe_name(intel_crtc->pipe), | |
633 | max_size, cur_size); | |
634 | } | |
635 | ||
d978ef14 JB |
636 | if (!fb) { |
637 | DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n"); | |
638 | goto out; | |
639 | } | |
640 | ||
484b41dd | 641 | ifbdev->preferred_bpp = fb->base.bits_per_pixel; |
d978ef14 JB |
642 | ifbdev->fb = fb; |
643 | ||
484b41dd | 644 | drm_framebuffer_reference(&ifbdev->fb->base); |
d978ef14 JB |
645 | |
646 | /* Final pass to check if any active pipes don't have fbs */ | |
70e1e0ec | 647 | for_each_crtc(dev, crtc) { |
d978ef14 JB |
648 | intel_crtc = to_intel_crtc(crtc); |
649 | ||
d5515991 | 650 | if (!crtc->state->active) |
d978ef14 JB |
651 | continue; |
652 | ||
66e514c1 | 653 | WARN(!crtc->primary->fb, |
d978ef14 JB |
654 | "re-used BIOS config but lost an fb on crtc %d\n", |
655 | crtc->base.id); | |
656 | } | |
657 | ||
658 | ||
659 | DRM_DEBUG_KMS("using BIOS fb for initial console\n"); | |
660 | return true; | |
661 | ||
d978ef14 JB |
662 | out: |
663 | ||
664 | return false; | |
665 | } | |
666 | ||
82e3b8c1 CW |
667 | static void intel_fbdev_suspend_worker(struct work_struct *work) |
668 | { | |
669 | intel_fbdev_set_suspend(container_of(work, | |
670 | struct drm_i915_private, | |
671 | fbdev_suspend_work)->dev, | |
672 | FBINFO_STATE_RUNNING, | |
673 | true); | |
674 | } | |
675 | ||
38651674 DA |
676 | int intel_fbdev_init(struct drm_device *dev) |
677 | { | |
8be48d92 | 678 | struct intel_fbdev *ifbdev; |
b51b32cd | 679 | struct drm_i915_private *dev_priv = dev->dev_private; |
5a79395b | 680 | int ret; |
8be48d92 | 681 | |
d978ef14 JB |
682 | if (WARN_ON(INTEL_INFO(dev)->num_pipes == 0)) |
683 | return -ENODEV; | |
684 | ||
685 | ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); | |
686 | if (ifbdev == NULL) | |
8be48d92 DA |
687 | return -ENOMEM; |
688 | ||
10a23102 TR |
689 | drm_fb_helper_prepare(dev, &ifbdev->helper, &intel_fb_helper_funcs); |
690 | ||
d978ef14 JB |
691 | if (!intel_fbdev_init_bios(dev, ifbdev)) |
692 | ifbdev->preferred_bpp = 32; | |
4abe3520 | 693 | |
5a79395b | 694 | ret = drm_fb_helper_init(dev, &ifbdev->helper, |
d978ef14 | 695 | INTEL_INFO(dev)->num_pipes, 4); |
5a79395b CW |
696 | if (ret) { |
697 | kfree(ifbdev); | |
698 | return ret; | |
699 | } | |
8be48d92 | 700 | |
28cc504e RC |
701 | ifbdev->helper.atomic = true; |
702 | ||
d978ef14 | 703 | dev_priv->fbdev = ifbdev; |
82e3b8c1 CW |
704 | INIT_WORK(&dev_priv->fbdev_suspend_work, intel_fbdev_suspend_worker); |
705 | ||
0b4c0f3f | 706 | drm_fb_helper_single_add_all_connectors(&ifbdev->helper); |
20afbda2 | 707 | |
79e53945 JB |
708 | return 0; |
709 | } | |
38651674 | 710 | |
e00bf696 | 711 | static void intel_fbdev_initial_config(void *data, async_cookie_t cookie) |
20afbda2 | 712 | { |
d1d70677 | 713 | struct drm_i915_private *dev_priv = data; |
d978ef14 | 714 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
20afbda2 DV |
715 | |
716 | /* Due to peculiar init order wrt to hpd handling this is separate. */ | |
366e39b4 LW |
717 | if (drm_fb_helper_initial_config(&ifbdev->helper, |
718 | ifbdev->preferred_bpp)) | |
719 | intel_fbdev_fini(dev_priv->dev); | |
20afbda2 DV |
720 | } |
721 | ||
e00bf696 VS |
722 | void intel_fbdev_initial_config_async(struct drm_device *dev) |
723 | { | |
724 | async_schedule(intel_fbdev_initial_config, to_i915(dev)); | |
725 | } | |
726 | ||
38651674 DA |
727 | void intel_fbdev_fini(struct drm_device *dev) |
728 | { | |
b51b32cd | 729 | struct drm_i915_private *dev_priv = dev->dev_private; |
8be48d92 DA |
730 | if (!dev_priv->fbdev) |
731 | return; | |
732 | ||
82e3b8c1 CW |
733 | flush_work(&dev_priv->fbdev_suspend_work); |
734 | ||
366e39b4 LW |
735 | if (!current_is_async()) |
736 | async_synchronize_full(); | |
38651674 | 737 | intel_fbdev_destroy(dev, dev_priv->fbdev); |
8be48d92 | 738 | kfree(dev_priv->fbdev); |
38651674 DA |
739 | dev_priv->fbdev = NULL; |
740 | } | |
3fa016a0 | 741 | |
82e3b8c1 | 742 | void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous) |
3fa016a0 | 743 | { |
b51b32cd | 744 | struct drm_i915_private *dev_priv = dev->dev_private; |
1ffc5289 JN |
745 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
746 | struct fb_info *info; | |
747 | ||
748 | if (!ifbdev) | |
3fa016a0 DA |
749 | return; |
750 | ||
1ffc5289 JN |
751 | info = ifbdev->helper.fbdev; |
752 | ||
82e3b8c1 CW |
753 | if (synchronous) { |
754 | /* Flush any pending work to turn the console on, and then | |
755 | * wait to turn it off. It must be synchronous as we are | |
756 | * about to suspend or unload the driver. | |
757 | * | |
758 | * Note that from within the work-handler, we cannot flush | |
759 | * ourselves, so only flush outstanding work upon suspend! | |
760 | */ | |
761 | if (state != FBINFO_STATE_RUNNING) | |
762 | flush_work(&dev_priv->fbdev_suspend_work); | |
763 | console_lock(); | |
764 | } else { | |
765 | /* | |
766 | * The console lock can be pretty contented on resume due | |
767 | * to all the printk activity. Try to keep it out of the hot | |
768 | * path of resume if possible. | |
769 | */ | |
770 | WARN_ON(state != FBINFO_STATE_RUNNING); | |
771 | if (!console_trylock()) { | |
772 | /* Don't block our own workqueue as this can | |
773 | * be run in parallel with other i915.ko tasks. | |
774 | */ | |
775 | schedule_work(&dev_priv->fbdev_suspend_work); | |
776 | return; | |
777 | } | |
778 | } | |
779 | ||
1ffc5289 JN |
780 | /* On resume from hibernation: If the object is shmemfs backed, it has |
781 | * been restored from swap. If the object is stolen however, it will be | |
782 | * full of whatever garbage was left in there. | |
783 | */ | |
8bcd4553 | 784 | if (state == FBINFO_STATE_RUNNING && ifbdev->fb->obj->stolen) |
1ffc5289 JN |
785 | memset_io(info->screen_base, 0, info->screen_size); |
786 | ||
21cff148 | 787 | drm_fb_helper_set_suspend(&ifbdev->helper, state); |
82e3b8c1 | 788 | console_unlock(); |
3fa016a0 DA |
789 | } |
790 | ||
0632fef6 | 791 | void intel_fbdev_output_poll_changed(struct drm_device *dev) |
eb1f8e4f | 792 | { |
b51b32cd | 793 | struct drm_i915_private *dev_priv = dev->dev_private; |
d978ef14 JB |
794 | if (dev_priv->fbdev) |
795 | drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper); | |
eb1f8e4f | 796 | } |
e8e7a2b8 | 797 | |
0632fef6 | 798 | void intel_fbdev_restore_mode(struct drm_device *dev) |
e8e7a2b8 DA |
799 | { |
800 | int ret; | |
b51b32cd | 801 | struct drm_i915_private *dev_priv = dev->dev_private; |
d04df732 RV |
802 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
803 | struct drm_fb_helper *fb_helper; | |
e8e7a2b8 | 804 | |
d04df732 | 805 | if (!ifbdev) |
e3c74757 BW |
806 | return; |
807 | ||
d04df732 RV |
808 | fb_helper = &ifbdev->helper; |
809 | ||
810 | ret = drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper); | |
811 | if (ret) { | |
e8e7a2b8 | 812 | DRM_DEBUG("failed to restore crtc mode\n"); |
d04df732 RV |
813 | } else { |
814 | mutex_lock(&fb_helper->dev->struct_mutex); | |
815 | intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); | |
816 | mutex_unlock(&fb_helper->dev->struct_mutex); | |
817 | } | |
e8e7a2b8 | 818 | } |