Commit | Line | Data |
---|---|---|
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); | |
4601b933 | 122 | struct drm_framebuffer *fb; |
3430824b | 123 | struct drm_device *dev = helper->dev; |
3badb49f | 124 | struct drm_i915_private *dev_priv = to_i915(dev); |
72e96d64 | 125 | struct i915_ggtt *ggtt = &dev_priv->ggtt; |
3a7f2f6a | 126 | struct drm_mode_fb_cmd2 mode_cmd = {}; |
3badb49f | 127 | struct drm_i915_gem_object *obj = NULL; |
57084d05 | 128 | int size, ret; |
79e53945 | 129 | |
b8c00ac5 | 130 | /* we don't do packed 24bpp */ |
38651674 DA |
131 | if (sizes->surface_bpp == 24) |
132 | sizes->surface_bpp = 32; | |
b8c00ac5 | 133 | |
38651674 DA |
134 | mode_cmd.width = sizes->surface_width; |
135 | mode_cmd.height = sizes->surface_height; | |
79e53945 | 136 | |
de45eaf7 PZ |
137 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * |
138 | DIV_ROUND_UP(sizes->surface_bpp, 8), 64); | |
308e5bcb JB |
139 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, |
140 | sizes->surface_depth); | |
79e53945 | 141 | |
51f1385b TU |
142 | mutex_lock(&dev->struct_mutex); |
143 | ||
308e5bcb | 144 | size = mode_cmd.pitches[0] * mode_cmd.height; |
1267a26b | 145 | size = PAGE_ALIGN(size); |
3badb49f PZ |
146 | |
147 | /* If the FB is too big, just don't use it since fbdev is not very | |
148 | * important and we should probably use that space with FBC or other | |
149 | * features. */ | |
72e96d64 | 150 | if (size * 2 < ggtt->stolen_usable_size) |
3badb49f | 151 | obj = i915_gem_object_create_stolen(dev, size); |
0ffb0ff2 | 152 | if (obj == NULL) |
d37cd8a8 | 153 | obj = i915_gem_object_create(dev, size); |
fe3db79b | 154 | if (IS_ERR(obj)) { |
1ae8c0a5 | 155 | DRM_ERROR("failed to allocate framebuffer\n"); |
fe3db79b | 156 | ret = PTR_ERR(obj); |
79e53945 JB |
157 | goto out; |
158 | } | |
79e53945 | 159 | |
a8bb6818 DV |
160 | fb = __intel_framebuffer_create(dev, &mode_cmd, obj); |
161 | if (IS_ERR(fb)) { | |
ca40ba85 | 162 | drm_gem_object_unreference(&obj->base); |
a8bb6818 | 163 | ret = PTR_ERR(fb); |
ca40ba85 | 164 | goto out; |
850c4cdc TU |
165 | } |
166 | ||
51f1385b TU |
167 | mutex_unlock(&dev->struct_mutex); |
168 | ||
a8bb6818 | 169 | ifbdev->fb = to_intel_framebuffer(fb); |
8b4f49e0 JB |
170 | |
171 | return 0; | |
172 | ||
8b4f49e0 | 173 | out: |
51f1385b | 174 | mutex_unlock(&dev->struct_mutex); |
8b4f49e0 JB |
175 | return ret; |
176 | } | |
177 | ||
178 | static int intelfb_create(struct drm_fb_helper *helper, | |
179 | struct drm_fb_helper_surface_size *sizes) | |
180 | { | |
181 | struct intel_fbdev *ifbdev = | |
182 | container_of(helper, struct intel_fbdev, helper); | |
8bcd4553 | 183 | struct intel_framebuffer *intel_fb = ifbdev->fb; |
8b4f49e0 | 184 | struct drm_device *dev = helper->dev; |
72e96d64 JL |
185 | struct drm_i915_private *dev_priv = to_i915(dev); |
186 | struct i915_ggtt *ggtt = &dev_priv->ggtt; | |
8b4f49e0 JB |
187 | struct fb_info *info; |
188 | struct drm_framebuffer *fb; | |
8ef8561f | 189 | struct i915_vma *vma; |
8b4f49e0 | 190 | struct drm_i915_gem_object *obj; |
d978ef14 | 191 | bool prealloc = false; |
8ef8561f CW |
192 | void *vaddr; |
193 | int ret; | |
8b4f49e0 | 194 | |
edd586fe CW |
195 | if (intel_fb && |
196 | (sizes->fb_width > intel_fb->base.width || | |
197 | sizes->fb_height > intel_fb->base.height)) { | |
198 | DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d)," | |
199 | " releasing it\n", | |
200 | intel_fb->base.width, intel_fb->base.height, | |
201 | sizes->fb_width, sizes->fb_height); | |
202 | drm_framebuffer_unreference(&intel_fb->base); | |
203 | intel_fb = ifbdev->fb = NULL; | |
204 | } | |
8bcd4553 | 205 | if (!intel_fb || WARN_ON(!intel_fb->obj)) { |
48e92120 | 206 | DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n"); |
8b4f49e0 JB |
207 | ret = intelfb_alloc(helper, sizes); |
208 | if (ret) | |
51f1385b | 209 | return ret; |
8bcd4553 | 210 | intel_fb = ifbdev->fb; |
8b4f49e0 | 211 | } else { |
48e92120 | 212 | DRM_DEBUG_KMS("re-using BIOS fb\n"); |
d978ef14 | 213 | prealloc = true; |
8b4f49e0 JB |
214 | sizes->fb_width = intel_fb->base.width; |
215 | sizes->fb_height = intel_fb->base.height; | |
216 | } | |
217 | ||
218 | obj = intel_fb->obj; | |
8b4f49e0 | 219 | |
51f1385b TU |
220 | mutex_lock(&dev->struct_mutex); |
221 | ||
0c82312f CW |
222 | /* Pin the GGTT vma for our access via info->screen_base. |
223 | * This also validates that any existing fb inherited from the | |
224 | * BIOS is suitable for own access. | |
225 | */ | |
3465c580 | 226 | ret = intel_pin_and_fence_fb_obj(&ifbdev->fb->base, BIT(DRM_ROTATE_0)); |
0c82312f CW |
227 | if (ret) |
228 | goto out_unlock; | |
229 | ||
21cff148 AT |
230 | info = drm_fb_helper_alloc_fbi(helper); |
231 | if (IS_ERR(info)) { | |
366e39b4 | 232 | DRM_ERROR("Failed to allocate fb_info\n"); |
21cff148 | 233 | ret = PTR_ERR(info); |
b4476f52 | 234 | goto out_unpin; |
79e53945 JB |
235 | } |
236 | ||
3430824b | 237 | info->par = helper; |
79e53945 | 238 | |
8bcd4553 | 239 | fb = &ifbdev->fb->base; |
79e53945 | 240 | |
38651674 | 241 | ifbdev->helper.fb = fb; |
785b93ef | 242 | |
79e53945 | 243 | strcpy(info->fix.id, "inteldrmfb"); |
79e53945 | 244 | |
8fd4bd22 | 245 | info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; |
79e53945 JB |
246 | info->fbops = &intelfb_ops; |
247 | ||
8ef8561f CW |
248 | vma = i915_gem_obj_to_ggtt(obj); |
249 | ||
4410f391 | 250 | /* setup aperture base/size for vesafb takeover */ |
1471ca9a | 251 | info->apertures->ranges[0].base = dev->mode_config.fb_base; |
72e96d64 | 252 | info->apertures->ranges[0].size = ggtt->mappable_end; |
4410f391 | 253 | |
8ef8561f CW |
254 | info->fix.smem_start = dev->mode_config.fb_base + vma->node.start; |
255 | info->fix.smem_len = vma->node.size; | |
79e53945 | 256 | |
8ef8561f CW |
257 | vaddr = i915_vma_pin_iomap(vma); |
258 | if (IS_ERR(vaddr)) { | |
366e39b4 | 259 | DRM_ERROR("Failed to remap framebuffer into virtual memory\n"); |
8ef8561f | 260 | ret = PTR_ERR(vaddr); |
21cff148 | 261 | goto out_destroy_fbi; |
79e53945 | 262 | } |
8ef8561f CW |
263 | info->screen_base = vaddr; |
264 | info->screen_size = vma->node.size; | |
79e53945 | 265 | |
24576d23 JB |
266 | /* This driver doesn't need a VT switch to restore the mode on resume */ |
267 | info->skip_vt_switch = true; | |
268 | ||
01f2c773 | 269 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
38651674 | 270 | drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height); |
79e53945 | 271 | |
88afe715 CW |
272 | /* If the object is shmemfs backed, it will have given us zeroed pages. |
273 | * If the object is stolen however, it will be full of whatever | |
274 | * garbage was left in there. | |
275 | */ | |
d978ef14 | 276 | if (ifbdev->fb->obj->stolen && !prealloc) |
88afe715 CW |
277 | memset_io(info->screen_base, 0, info->screen_size); |
278 | ||
fb2a99e1 | 279 | /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ |
79e53945 | 280 | |
088e0df4 | 281 | DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08llx, bo %p\n", |
8be48d92 | 282 | fb->width, fb->height, |
f343c5f6 | 283 | i915_gem_obj_ggtt_offset(obj), obj); |
79e53945 JB |
284 | |
285 | mutex_unlock(&dev->struct_mutex); | |
6a9ee8af | 286 | vga_switcheroo_client_fb_set(dev->pdev, info); |
79e53945 JB |
287 | return 0; |
288 | ||
21cff148 AT |
289 | out_destroy_fbi: |
290 | drm_fb_helper_release_fbi(helper); | |
b4476f52 | 291 | out_unpin: |
fb4b8ce1 | 292 | intel_unpin_fb_obj(&ifbdev->fb->base, BIT(DRM_ROTATE_0)); |
0c82312f | 293 | out_unlock: |
79e53945 | 294 | mutex_unlock(&dev->struct_mutex); |
79e53945 JB |
295 | return ret; |
296 | } | |
297 | ||
67437680 PZ |
298 | /** Sets the color ramps on behalf of RandR */ |
299 | static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, | |
300 | u16 blue, int regno) | |
301 | { | |
302 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
303 | ||
304 | intel_crtc->lut_r[regno] = red >> 8; | |
305 | intel_crtc->lut_g[regno] = green >> 8; | |
306 | intel_crtc->lut_b[regno] = blue >> 8; | |
307 | } | |
308 | ||
309 | static void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, | |
310 | u16 *blue, int regno) | |
311 | { | |
312 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
313 | ||
314 | *red = intel_crtc->lut_r[regno] << 8; | |
315 | *green = intel_crtc->lut_g[regno] << 8; | |
316 | *blue = intel_crtc->lut_b[regno] << 8; | |
317 | } | |
318 | ||
eb1bfe80 JB |
319 | static struct drm_fb_helper_crtc * |
320 | intel_fb_helper_crtc(struct drm_fb_helper *fb_helper, struct drm_crtc *crtc) | |
321 | { | |
322 | int i; | |
323 | ||
324 | for (i = 0; i < fb_helper->crtc_count; i++) | |
325 | if (fb_helper->crtc_info[i].mode_set.crtc == crtc) | |
326 | return &fb_helper->crtc_info[i]; | |
327 | ||
328 | return NULL; | |
329 | } | |
330 | ||
331 | /* | |
332 | * Try to read the BIOS display configuration and use it for the initial | |
333 | * fb configuration. | |
334 | * | |
335 | * The BIOS or boot loader will generally create an initial display | |
336 | * configuration for us that includes some set of active pipes and displays. | |
337 | * This routine tries to figure out which pipes and connectors are active | |
338 | * and stuffs them into the crtcs and modes array given to us by the | |
339 | * drm_fb_helper code. | |
340 | * | |
341 | * The overall sequence is: | |
342 | * intel_fbdev_init - from driver load | |
343 | * intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data | |
344 | * drm_fb_helper_init - build fb helper structs | |
345 | * drm_fb_helper_single_add_all_connectors - more fb helper structs | |
346 | * intel_fbdev_initial_config - apply the config | |
347 | * drm_fb_helper_initial_config - call ->probe then register_framebuffer() | |
348 | * drm_setup_crtcs - build crtc config for fbdev | |
349 | * intel_fb_initial_config - find active connectors etc | |
350 | * drm_fb_helper_single_fb_probe - set up fbdev | |
351 | * intelfb_create - re-use or alloc fb, build out fbdev structs | |
352 | * | |
353 | * Note that we don't make special consideration whether we could actually | |
354 | * switch to the selected modes without a full modeset. E.g. when the display | |
355 | * is in VGA mode we need to recalculate watermarks and set a new high-res | |
356 | * framebuffer anyway. | |
357 | */ | |
358 | static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper, | |
359 | struct drm_fb_helper_crtc **crtcs, | |
360 | struct drm_display_mode **modes, | |
b0ee9e7f | 361 | struct drm_fb_offset *offsets, |
eb1bfe80 JB |
362 | bool *enabled, int width, int height) |
363 | { | |
02f5eebb | 364 | struct drm_device *dev = fb_helper->dev; |
86f40bb6 CW |
365 | unsigned long conn_configured, mask; |
366 | unsigned int count = min(fb_helper->connector_count, BITS_PER_LONG); | |
eb1bfe80 | 367 | int i, j; |
02f5eebb | 368 | bool *save_enabled; |
7c2bb531 | 369 | bool fallback = true; |
7e696e4c DV |
370 | int num_connectors_enabled = 0; |
371 | int num_connectors_detected = 0; | |
b0ee9e7f | 372 | int pass = 0; |
02f5eebb | 373 | |
86f40bb6 | 374 | save_enabled = kcalloc(count, sizeof(bool), GFP_KERNEL); |
02f5eebb JB |
375 | if (!save_enabled) |
376 | return false; | |
377 | ||
86f40bb6 CW |
378 | memcpy(save_enabled, enabled, count); |
379 | mask = BIT(count) - 1; | |
380 | conn_configured = 0; | |
b0ee9e7f | 381 | retry: |
86f40bb6 | 382 | for (i = 0; i < count; i++) { |
eb1bfe80 JB |
383 | struct drm_fb_helper_connector *fb_conn; |
384 | struct drm_connector *connector; | |
385 | struct drm_encoder *encoder; | |
386 | struct drm_fb_helper_crtc *new_crtc; | |
82cf435b | 387 | struct intel_crtc *intel_crtc; |
eb1bfe80 JB |
388 | |
389 | fb_conn = fb_helper->connector_info[i]; | |
390 | connector = fb_conn->connector; | |
7e696e4c | 391 | |
86f40bb6 | 392 | if (conn_configured & BIT(i)) |
b0ee9e7f DA |
393 | continue; |
394 | ||
395 | if (pass == 0 && !connector->has_tile) | |
396 | continue; | |
397 | ||
7e696e4c DV |
398 | if (connector->status == connector_status_connected) |
399 | num_connectors_detected++; | |
400 | ||
eb1bfe80 | 401 | if (!enabled[i]) { |
c0c97622 | 402 | DRM_DEBUG_KMS("connector %s not enabled, skipping\n", |
c23cc417 | 403 | connector->name); |
86f40bb6 | 404 | conn_configured |= BIT(i); |
eb1bfe80 JB |
405 | continue; |
406 | } | |
407 | ||
d84a0f32 CW |
408 | if (connector->force == DRM_FORCE_OFF) { |
409 | DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n", | |
410 | connector->name); | |
411 | enabled[i] = false; | |
412 | continue; | |
413 | } | |
414 | ||
e28661bd ML |
415 | encoder = connector->state->best_encoder; |
416 | if (!encoder || WARN_ON(!connector->state->crtc)) { | |
d84a0f32 CW |
417 | if (connector->force > DRM_FORCE_OFF) |
418 | goto bail; | |
419 | ||
c0c97622 | 420 | DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n", |
c23cc417 | 421 | connector->name); |
eb1bfe80 | 422 | enabled[i] = false; |
86f40bb6 | 423 | conn_configured |= BIT(i); |
eb1bfe80 JB |
424 | continue; |
425 | } | |
426 | ||
7e696e4c DV |
427 | num_connectors_enabled++; |
428 | ||
82cf435b LL |
429 | intel_crtc = to_intel_crtc(connector->state->crtc); |
430 | for (j = 0; j < 256; j++) { | |
431 | intel_crtc->lut_r[j] = j; | |
432 | intel_crtc->lut_g[j] = j; | |
433 | intel_crtc->lut_b[j] = j; | |
434 | } | |
435 | ||
86f40bb6 CW |
436 | new_crtc = intel_fb_helper_crtc(fb_helper, |
437 | connector->state->crtc); | |
eb1bfe80 JB |
438 | |
439 | /* | |
440 | * Make sure we're not trying to drive multiple connectors | |
441 | * with a single CRTC, since our cloning support may not | |
442 | * match the BIOS. | |
443 | */ | |
86f40bb6 | 444 | for (j = 0; j < count; j++) { |
02f5eebb | 445 | if (crtcs[j] == new_crtc) { |
7e696e4c | 446 | DRM_DEBUG_KMS("fallback: cloned configuration\n"); |
d84a0f32 | 447 | goto bail; |
02f5eebb | 448 | } |
eb1bfe80 JB |
449 | } |
450 | ||
c0c97622 | 451 | DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n", |
c23cc417 | 452 | connector->name); |
eb1bfe80 JB |
453 | |
454 | /* go for command line mode first */ | |
455 | modes[i] = drm_pick_cmdline_mode(fb_conn, width, height); | |
456 | ||
457 | /* try for preferred next */ | |
458 | if (!modes[i]) { | |
b0ee9e7f DA |
459 | DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n", |
460 | connector->name, connector->has_tile); | |
eb1bfe80 JB |
461 | modes[i] = drm_has_preferred_mode(fb_conn, width, |
462 | height); | |
463 | } | |
464 | ||
afba0b5a CW |
465 | /* No preferred mode marked by the EDID? Are there any modes? */ |
466 | if (!modes[i] && !list_empty(&connector->modes)) { | |
467 | DRM_DEBUG_KMS("using first mode listed on connector %s\n", | |
8d4ad9d4 | 468 | connector->name); |
afba0b5a CW |
469 | modes[i] = list_first_entry(&connector->modes, |
470 | struct drm_display_mode, | |
471 | head); | |
472 | } | |
473 | ||
eb1bfe80 JB |
474 | /* last resort: use current mode */ |
475 | if (!modes[i]) { | |
476 | /* | |
477 | * IMPORTANT: We want to use the adjusted mode (i.e. | |
478 | * after the panel fitter upscaling) as the initial | |
479 | * config, not the input mode, which is what crtc->mode | |
5c1e3426 | 480 | * usually contains. But since our current |
eb1bfe80 | 481 | * code puts a mode derived from the post-pfit timings |
5c1e3426 | 482 | * into crtc->mode this works out correctly. |
e28661bd ML |
483 | * |
484 | * This is crtc->mode and not crtc->state->mode for the | |
485 | * fastboot check to work correctly. crtc_state->mode has | |
486 | * I915_MODE_FLAG_INHERITED, which we clear to force check | |
487 | * state. | |
eb1bfe80 | 488 | */ |
c0c97622 | 489 | DRM_DEBUG_KMS("looking for current mode on connector %s\n", |
c23cc417 | 490 | connector->name); |
e28661bd | 491 | modes[i] = &connector->state->crtc->mode; |
eb1bfe80 JB |
492 | } |
493 | crtcs[i] = new_crtc; | |
494 | ||
78108b7c | 495 | DRM_DEBUG_KMS("connector %s on [CRTC:%d:%s]: %dx%d%s\n", |
c23cc417 | 496 | connector->name, |
e28661bd | 497 | connector->state->crtc->base.id, |
78108b7c | 498 | connector->state->crtc->name, |
c0c97622 CW |
499 | modes[i]->hdisplay, modes[i]->vdisplay, |
500 | modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" :""); | |
02f5eebb | 501 | |
7c2bb531 | 502 | fallback = false; |
86f40bb6 | 503 | conn_configured |= BIT(i); |
b0ee9e7f DA |
504 | } |
505 | ||
506 | if ((conn_configured & mask) != mask) { | |
507 | pass++; | |
508 | goto retry; | |
02f5eebb JB |
509 | } |
510 | ||
7e696e4c DV |
511 | /* |
512 | * If the BIOS didn't enable everything it could, fall back to have the | |
513 | * same user experiencing of lighting up as much as possible like the | |
514 | * fbdev helper library. | |
515 | */ | |
516 | if (num_connectors_enabled != num_connectors_detected && | |
517 | num_connectors_enabled < INTEL_INFO(dev)->num_pipes) { | |
518 | DRM_DEBUG_KMS("fallback: Not all outputs enabled\n"); | |
519 | DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled, | |
520 | num_connectors_detected); | |
521 | fallback = true; | |
522 | } | |
523 | ||
7c2bb531 | 524 | if (fallback) { |
d84a0f32 | 525 | bail: |
7e696e4c | 526 | DRM_DEBUG_KMS("Not using firmware configuration\n"); |
86f40bb6 | 527 | memcpy(enabled, save_enabled, count); |
02f5eebb JB |
528 | kfree(save_enabled); |
529 | return false; | |
eb1bfe80 JB |
530 | } |
531 | ||
02f5eebb | 532 | kfree(save_enabled); |
eb1bfe80 JB |
533 | return true; |
534 | } | |
535 | ||
3a493879 | 536 | static const struct drm_fb_helper_funcs intel_fb_helper_funcs = { |
eb1bfe80 | 537 | .initial_config = intel_fb_initial_config, |
4abe3520 DA |
538 | .gamma_set = intel_crtc_fb_gamma_set, |
539 | .gamma_get = intel_crtc_fb_gamma_get, | |
cd5428a5 | 540 | .fb_probe = intelfb_create, |
4abe3520 | 541 | }; |
79e53945 | 542 | |
43cee314 | 543 | static void intel_fbdev_destroy(struct intel_fbdev *ifbdev) |
79e53945 | 544 | { |
0c82312f CW |
545 | /* We rely on the object-free to release the VMA pinning for |
546 | * the info->screen_base mmaping. Leaking the VMA is simpler than | |
547 | * trying to rectify all the possible error paths leading here. | |
548 | */ | |
ddfe1567 | 549 | |
21cff148 AT |
550 | drm_fb_helper_unregister_fbi(&ifbdev->helper); |
551 | drm_fb_helper_release_fbi(&ifbdev->helper); | |
79e53945 | 552 | |
4abe3520 | 553 | drm_fb_helper_fini(&ifbdev->helper); |
79e53945 | 554 | |
54632abe | 555 | if (ifbdev->fb) { |
43cee314 | 556 | mutex_lock(&ifbdev->helper.dev->struct_mutex); |
fb4b8ce1 | 557 | intel_unpin_fb_obj(&ifbdev->fb->base, BIT(DRM_ROTATE_0)); |
43cee314 | 558 | mutex_unlock(&ifbdev->helper.dev->struct_mutex); |
fb4b8ce1 | 559 | |
54632abe LW |
560 | drm_framebuffer_remove(&ifbdev->fb->base); |
561 | } | |
43cee314 CW |
562 | |
563 | kfree(ifbdev); | |
79e53945 | 564 | } |
38651674 | 565 | |
d978ef14 JB |
566 | /* |
567 | * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible. | |
568 | * The core display code will have read out the current plane configuration, | |
569 | * so we use that to figure out if there's an object for us to use as the | |
570 | * fb, and if so, we re-use it for the fbdev configuration. | |
571 | * | |
572 | * Note we only support a single fb shared across pipes for boot (mostly for | |
573 | * fbcon), so we just find the biggest and use that. | |
574 | */ | |
575 | static bool intel_fbdev_init_bios(struct drm_device *dev, | |
576 | struct intel_fbdev *ifbdev) | |
577 | { | |
578 | struct intel_framebuffer *fb = NULL; | |
579 | struct drm_crtc *crtc; | |
580 | struct intel_crtc *intel_crtc; | |
d978ef14 JB |
581 | unsigned int max_size = 0; |
582 | ||
d978ef14 | 583 | /* Find the largest fb */ |
70e1e0ec | 584 | for_each_crtc(dev, crtc) { |
8e9ba31a ML |
585 | struct drm_i915_gem_object *obj = |
586 | intel_fb_obj(crtc->primary->state->fb); | |
d978ef14 JB |
587 | intel_crtc = to_intel_crtc(crtc); |
588 | ||
d5515991 | 589 | if (!crtc->state->active || !obj) { |
d978ef14 JB |
590 | DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n", |
591 | pipe_name(intel_crtc->pipe)); | |
592 | continue; | |
593 | } | |
594 | ||
8e9ba31a | 595 | if (obj->base.size > max_size) { |
d978ef14 JB |
596 | DRM_DEBUG_KMS("found possible fb from plane %c\n", |
597 | pipe_name(intel_crtc->pipe)); | |
8e9ba31a ML |
598 | fb = to_intel_framebuffer(crtc->primary->state->fb); |
599 | max_size = obj->base.size; | |
d978ef14 JB |
600 | } |
601 | } | |
602 | ||
603 | if (!fb) { | |
604 | DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n"); | |
605 | goto out; | |
606 | } | |
607 | ||
608 | /* Now make sure all the pipes will fit into it */ | |
70e1e0ec | 609 | for_each_crtc(dev, crtc) { |
d978ef14 JB |
610 | unsigned int cur_size; |
611 | ||
612 | intel_crtc = to_intel_crtc(crtc); | |
613 | ||
d5515991 | 614 | if (!crtc->state->active) { |
d978ef14 JB |
615 | DRM_DEBUG_KMS("pipe %c not active, skipping\n", |
616 | pipe_name(intel_crtc->pipe)); | |
617 | continue; | |
618 | } | |
619 | ||
620 | DRM_DEBUG_KMS("checking plane %c for BIOS fb\n", | |
621 | pipe_name(intel_crtc->pipe)); | |
622 | ||
623 | /* | |
624 | * See if the plane fb we found above will fit on this | |
bc104d1f CW |
625 | * pipe. Note we need to use the selected fb's pitch and bpp |
626 | * rather than the current pipe's, since they differ. | |
d978ef14 | 627 | */ |
6e3c9717 | 628 | cur_size = intel_crtc->config->base.adjusted_mode.crtc_hdisplay; |
bc104d1f CW |
629 | cur_size = cur_size * fb->base.bits_per_pixel / 8; |
630 | if (fb->base.pitches[0] < cur_size) { | |
631 | DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n", | |
632 | pipe_name(intel_crtc->pipe), | |
633 | cur_size, fb->base.pitches[0]); | |
bc104d1f CW |
634 | fb = NULL; |
635 | break; | |
636 | } | |
637 | ||
6e3c9717 | 638 | cur_size = intel_crtc->config->base.adjusted_mode.crtc_vdisplay; |
ec2c981e | 639 | cur_size = intel_fb_align_height(dev, cur_size, |
091df6cb DV |
640 | fb->base.pixel_format, |
641 | fb->base.modifier[0]); | |
bc104d1f CW |
642 | cur_size *= fb->base.pitches[0]; |
643 | DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n", | |
644 | pipe_name(intel_crtc->pipe), | |
6e3c9717 ACO |
645 | intel_crtc->config->base.adjusted_mode.crtc_hdisplay, |
646 | intel_crtc->config->base.adjusted_mode.crtc_vdisplay, | |
bc104d1f | 647 | fb->base.bits_per_pixel, |
d978ef14 | 648 | cur_size); |
d978ef14 JB |
649 | |
650 | if (cur_size > max_size) { | |
651 | DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n", | |
652 | pipe_name(intel_crtc->pipe), | |
653 | cur_size, max_size); | |
d978ef14 JB |
654 | fb = NULL; |
655 | break; | |
656 | } | |
657 | ||
658 | DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n", | |
659 | pipe_name(intel_crtc->pipe), | |
660 | max_size, cur_size); | |
661 | } | |
662 | ||
d978ef14 JB |
663 | if (!fb) { |
664 | DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n"); | |
665 | goto out; | |
666 | } | |
667 | ||
484b41dd | 668 | ifbdev->preferred_bpp = fb->base.bits_per_pixel; |
d978ef14 JB |
669 | ifbdev->fb = fb; |
670 | ||
484b41dd | 671 | drm_framebuffer_reference(&ifbdev->fb->base); |
d978ef14 JB |
672 | |
673 | /* Final pass to check if any active pipes don't have fbs */ | |
70e1e0ec | 674 | for_each_crtc(dev, crtc) { |
d978ef14 JB |
675 | intel_crtc = to_intel_crtc(crtc); |
676 | ||
d5515991 | 677 | if (!crtc->state->active) |
d978ef14 JB |
678 | continue; |
679 | ||
66e514c1 | 680 | WARN(!crtc->primary->fb, |
d978ef14 JB |
681 | "re-used BIOS config but lost an fb on crtc %d\n", |
682 | crtc->base.id); | |
683 | } | |
684 | ||
685 | ||
686 | DRM_DEBUG_KMS("using BIOS fb for initial console\n"); | |
687 | return true; | |
688 | ||
d978ef14 JB |
689 | out: |
690 | ||
691 | return false; | |
692 | } | |
693 | ||
82e3b8c1 CW |
694 | static void intel_fbdev_suspend_worker(struct work_struct *work) |
695 | { | |
91c8a326 CW |
696 | intel_fbdev_set_suspend(&container_of(work, |
697 | struct drm_i915_private, | |
698 | fbdev_suspend_work)->drm, | |
82e3b8c1 CW |
699 | FBINFO_STATE_RUNNING, |
700 | true); | |
701 | } | |
702 | ||
38651674 DA |
703 | int intel_fbdev_init(struct drm_device *dev) |
704 | { | |
8be48d92 | 705 | struct intel_fbdev *ifbdev; |
fac5e23e | 706 | struct drm_i915_private *dev_priv = to_i915(dev); |
5a79395b | 707 | int ret; |
8be48d92 | 708 | |
d978ef14 JB |
709 | if (WARN_ON(INTEL_INFO(dev)->num_pipes == 0)) |
710 | return -ENODEV; | |
711 | ||
712 | ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); | |
713 | if (ifbdev == NULL) | |
8be48d92 DA |
714 | return -ENOMEM; |
715 | ||
10a23102 TR |
716 | drm_fb_helper_prepare(dev, &ifbdev->helper, &intel_fb_helper_funcs); |
717 | ||
d978ef14 JB |
718 | if (!intel_fbdev_init_bios(dev, ifbdev)) |
719 | ifbdev->preferred_bpp = 32; | |
4abe3520 | 720 | |
5a79395b | 721 | ret = drm_fb_helper_init(dev, &ifbdev->helper, |
d978ef14 | 722 | INTEL_INFO(dev)->num_pipes, 4); |
5a79395b CW |
723 | if (ret) { |
724 | kfree(ifbdev); | |
725 | return ret; | |
726 | } | |
8be48d92 | 727 | |
d978ef14 | 728 | dev_priv->fbdev = ifbdev; |
82e3b8c1 CW |
729 | INIT_WORK(&dev_priv->fbdev_suspend_work, intel_fbdev_suspend_worker); |
730 | ||
0b4c0f3f | 731 | drm_fb_helper_single_add_all_connectors(&ifbdev->helper); |
20afbda2 | 732 | |
79e53945 JB |
733 | return 0; |
734 | } | |
38651674 | 735 | |
e00bf696 | 736 | static void intel_fbdev_initial_config(void *data, async_cookie_t cookie) |
20afbda2 | 737 | { |
43cee314 | 738 | struct intel_fbdev *ifbdev = data; |
20afbda2 DV |
739 | |
740 | /* Due to peculiar init order wrt to hpd handling this is separate. */ | |
366e39b4 LW |
741 | if (drm_fb_helper_initial_config(&ifbdev->helper, |
742 | ifbdev->preferred_bpp)) | |
43cee314 | 743 | intel_fbdev_fini(ifbdev->helper.dev); |
20afbda2 DV |
744 | } |
745 | ||
e00bf696 VS |
746 | void intel_fbdev_initial_config_async(struct drm_device *dev) |
747 | { | |
43cee314 CW |
748 | struct intel_fbdev *ifbdev = to_i915(dev)->fbdev; |
749 | ||
750 | ifbdev->cookie = async_schedule(intel_fbdev_initial_config, ifbdev); | |
751 | } | |
752 | ||
753 | static void intel_fbdev_sync(struct intel_fbdev *ifbdev) | |
754 | { | |
755 | if (!ifbdev->cookie) | |
756 | return; | |
757 | ||
758 | /* Only serialises with all preceding async calls, hence +1 */ | |
759 | async_synchronize_cookie(ifbdev->cookie + 1); | |
760 | ifbdev->cookie = 0; | |
e00bf696 VS |
761 | } |
762 | ||
38651674 DA |
763 | void intel_fbdev_fini(struct drm_device *dev) |
764 | { | |
fac5e23e | 765 | struct drm_i915_private *dev_priv = to_i915(dev); |
43cee314 CW |
766 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
767 | ||
768 | if (!ifbdev) | |
8be48d92 DA |
769 | return; |
770 | ||
82e3b8c1 | 771 | flush_work(&dev_priv->fbdev_suspend_work); |
366e39b4 | 772 | if (!current_is_async()) |
43cee314 CW |
773 | intel_fbdev_sync(ifbdev); |
774 | ||
775 | intel_fbdev_destroy(ifbdev); | |
38651674 DA |
776 | dev_priv->fbdev = NULL; |
777 | } | |
3fa016a0 | 778 | |
82e3b8c1 | 779 | void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous) |
3fa016a0 | 780 | { |
fac5e23e | 781 | struct drm_i915_private *dev_priv = to_i915(dev); |
1ffc5289 JN |
782 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
783 | struct fb_info *info; | |
784 | ||
785 | if (!ifbdev) | |
3fa016a0 DA |
786 | return; |
787 | ||
1ffc5289 JN |
788 | info = ifbdev->helper.fbdev; |
789 | ||
82e3b8c1 CW |
790 | if (synchronous) { |
791 | /* Flush any pending work to turn the console on, and then | |
792 | * wait to turn it off. It must be synchronous as we are | |
793 | * about to suspend or unload the driver. | |
794 | * | |
795 | * Note that from within the work-handler, we cannot flush | |
796 | * ourselves, so only flush outstanding work upon suspend! | |
797 | */ | |
798 | if (state != FBINFO_STATE_RUNNING) | |
799 | flush_work(&dev_priv->fbdev_suspend_work); | |
800 | console_lock(); | |
801 | } else { | |
802 | /* | |
803 | * The console lock can be pretty contented on resume due | |
804 | * to all the printk activity. Try to keep it out of the hot | |
805 | * path of resume if possible. | |
806 | */ | |
807 | WARN_ON(state != FBINFO_STATE_RUNNING); | |
808 | if (!console_trylock()) { | |
809 | /* Don't block our own workqueue as this can | |
810 | * be run in parallel with other i915.ko tasks. | |
811 | */ | |
812 | schedule_work(&dev_priv->fbdev_suspend_work); | |
813 | return; | |
814 | } | |
815 | } | |
816 | ||
1ffc5289 JN |
817 | /* On resume from hibernation: If the object is shmemfs backed, it has |
818 | * been restored from swap. If the object is stolen however, it will be | |
819 | * full of whatever garbage was left in there. | |
820 | */ | |
8bcd4553 | 821 | if (state == FBINFO_STATE_RUNNING && ifbdev->fb->obj->stolen) |
1ffc5289 JN |
822 | memset_io(info->screen_base, 0, info->screen_size); |
823 | ||
21cff148 | 824 | drm_fb_helper_set_suspend(&ifbdev->helper, state); |
82e3b8c1 | 825 | console_unlock(); |
3fa016a0 DA |
826 | } |
827 | ||
0632fef6 | 828 | void intel_fbdev_output_poll_changed(struct drm_device *dev) |
eb1f8e4f | 829 | { |
fac5e23e | 830 | struct drm_i915_private *dev_priv = to_i915(dev); |
d978ef14 JB |
831 | if (dev_priv->fbdev) |
832 | drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper); | |
eb1f8e4f | 833 | } |
e8e7a2b8 | 834 | |
0632fef6 | 835 | void intel_fbdev_restore_mode(struct drm_device *dev) |
e8e7a2b8 DA |
836 | { |
837 | int ret; | |
fac5e23e | 838 | struct drm_i915_private *dev_priv = to_i915(dev); |
d04df732 RV |
839 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
840 | struct drm_fb_helper *fb_helper; | |
e8e7a2b8 | 841 | |
d04df732 | 842 | if (!ifbdev) |
e3c74757 BW |
843 | return; |
844 | ||
e77018f7 CW |
845 | intel_fbdev_sync(ifbdev); |
846 | ||
d04df732 RV |
847 | fb_helper = &ifbdev->helper; |
848 | ||
849 | ret = drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper); | |
850 | if (ret) { | |
e8e7a2b8 | 851 | DRM_DEBUG("failed to restore crtc mode\n"); |
d04df732 RV |
852 | } else { |
853 | mutex_lock(&fb_helper->dev->struct_mutex); | |
854 | intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); | |
855 | mutex_unlock(&fb_helper->dev->struct_mutex); | |
856 | } | |
e8e7a2b8 | 857 | } |