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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 | ||
27 | #include <linux/module.h> | |
28 | #include <linux/kernel.h> | |
29 | #include <linux/errno.h> | |
30 | #include <linux/string.h> | |
31 | #include <linux/mm.h> | |
32 | #include <linux/tty.h> | |
79e53945 JB |
33 | #include <linux/sysrq.h> |
34 | #include <linux/delay.h> | |
35 | #include <linux/fb.h> | |
36 | #include <linux/init.h> | |
6a9ee8af | 37 | #include <linux/vga_switcheroo.h> |
79e53945 | 38 | |
760285e7 DH |
39 | #include <drm/drmP.h> |
40 | #include <drm/drm_crtc.h> | |
41 | #include <drm/drm_fb_helper.h> | |
79e53945 | 42 | #include "intel_drv.h" |
760285e7 | 43 | #include <drm/i915_drm.h> |
79e53945 JB |
44 | #include "i915_drv.h" |
45 | ||
79e53945 JB |
46 | static struct fb_ops intelfb_ops = { |
47 | .owner = THIS_MODULE, | |
785b93ef DA |
48 | .fb_check_var = drm_fb_helper_check_var, |
49 | .fb_set_par = drm_fb_helper_set_par, | |
79e53945 JB |
50 | .fb_fillrect = cfb_fillrect, |
51 | .fb_copyarea = cfb_copyarea, | |
52 | .fb_imageblit = cfb_imageblit, | |
785b93ef DA |
53 | .fb_pan_display = drm_fb_helper_pan_display, |
54 | .fb_blank = drm_fb_helper_blank, | |
068143d3 | 55 | .fb_setcmap = drm_fb_helper_setcmap, |
81255565 JB |
56 | .fb_debug_enter = drm_fb_helper_debug_enter, |
57 | .fb_debug_leave = drm_fb_helper_debug_leave, | |
79e53945 JB |
58 | }; |
59 | ||
8b4f49e0 JB |
60 | static int intelfb_alloc(struct drm_fb_helper *helper, |
61 | struct drm_fb_helper_surface_size *sizes) | |
79e53945 | 62 | { |
3430824b VS |
63 | struct intel_fbdev *ifbdev = |
64 | container_of(helper, struct intel_fbdev, helper); | |
8bcd4553 | 65 | struct intel_framebuffer *fb; |
3430824b | 66 | struct drm_device *dev = helper->dev; |
3a7f2f6a | 67 | struct drm_mode_fb_cmd2 mode_cmd = {}; |
05394f39 | 68 | struct drm_i915_gem_object *obj; |
57084d05 | 69 | int size, ret; |
79e53945 | 70 | |
8bcd4553 JB |
71 | fb = kzalloc(sizeof(*fb), GFP_KERNEL); |
72 | if (!fb) { | |
73 | ret = -ENOMEM; | |
74 | goto out; | |
75 | } | |
76 | ||
77 | ifbdev->fb = fb; | |
78 | ||
b8c00ac5 | 79 | /* we don't do packed 24bpp */ |
38651674 DA |
80 | if (sizes->surface_bpp == 24) |
81 | sizes->surface_bpp = 32; | |
b8c00ac5 | 82 | |
38651674 DA |
83 | mode_cmd.width = sizes->surface_width; |
84 | mode_cmd.height = sizes->surface_height; | |
79e53945 | 85 | |
de45eaf7 PZ |
86 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * |
87 | DIV_ROUND_UP(sizes->surface_bpp, 8), 64); | |
308e5bcb JB |
88 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, |
89 | sizes->surface_depth); | |
79e53945 | 90 | |
308e5bcb | 91 | size = mode_cmd.pitches[0] * mode_cmd.height; |
79e53945 | 92 | size = ALIGN(size, PAGE_SIZE); |
0ffb0ff2 CW |
93 | obj = i915_gem_object_create_stolen(dev, size); |
94 | if (obj == NULL) | |
95 | obj = i915_gem_alloc_object(dev, size); | |
05394f39 | 96 | if (!obj) { |
1ae8c0a5 | 97 | DRM_ERROR("failed to allocate framebuffer\n"); |
79e53945 JB |
98 | ret = -ENOMEM; |
99 | goto out; | |
100 | } | |
79e53945 | 101 | |
7213342d | 102 | /* Flush everything out, we'll be doing GTT only from now on */ |
c43b5634 | 103 | ret = intel_pin_and_fence_fb_obj(dev, obj, NULL); |
79e53945 JB |
104 | if (ret) { |
105 | DRM_ERROR("failed to pin fb: %d\n", ret); | |
106 | goto out_unref; | |
107 | } | |
108 | ||
8bcd4553 | 109 | ret = intel_framebuffer_init(dev, ifbdev->fb, &mode_cmd, obj); |
8b4f49e0 JB |
110 | if (ret) |
111 | goto out_unpin; | |
112 | ||
113 | return 0; | |
114 | ||
115 | out_unpin: | |
d7f46fc4 | 116 | i915_gem_object_ggtt_unpin(obj); |
8b4f49e0 JB |
117 | out_unref: |
118 | drm_gem_object_unreference(&obj->base); | |
119 | out: | |
120 | return ret; | |
121 | } | |
122 | ||
123 | static int intelfb_create(struct drm_fb_helper *helper, | |
124 | struct drm_fb_helper_surface_size *sizes) | |
125 | { | |
126 | struct intel_fbdev *ifbdev = | |
127 | container_of(helper, struct intel_fbdev, helper); | |
8bcd4553 | 128 | struct intel_framebuffer *intel_fb = ifbdev->fb; |
8b4f49e0 JB |
129 | struct drm_device *dev = helper->dev; |
130 | struct drm_i915_private *dev_priv = dev->dev_private; | |
131 | struct fb_info *info; | |
132 | struct drm_framebuffer *fb; | |
133 | struct drm_i915_gem_object *obj; | |
134 | int size, ret; | |
135 | ||
136 | mutex_lock(&dev->struct_mutex); | |
137 | ||
8bcd4553 | 138 | if (!intel_fb || WARN_ON(!intel_fb->obj)) { |
48e92120 | 139 | DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n"); |
8b4f49e0 JB |
140 | ret = intelfb_alloc(helper, sizes); |
141 | if (ret) | |
142 | goto out_unlock; | |
8bcd4553 | 143 | intel_fb = ifbdev->fb; |
8b4f49e0 | 144 | } else { |
48e92120 | 145 | DRM_DEBUG_KMS("re-using BIOS fb\n"); |
8b4f49e0 JB |
146 | sizes->fb_width = intel_fb->base.width; |
147 | sizes->fb_height = intel_fb->base.height; | |
148 | } | |
149 | ||
150 | obj = intel_fb->obj; | |
151 | size = obj->base.size; | |
152 | ||
153 | info = framebuffer_alloc(0, &dev->pdev->dev); | |
79e53945 JB |
154 | if (!info) { |
155 | ret = -ENOMEM; | |
b4476f52 | 156 | goto out_unpin; |
79e53945 JB |
157 | } |
158 | ||
3430824b | 159 | info->par = helper; |
79e53945 | 160 | |
8bcd4553 | 161 | fb = &ifbdev->fb->base; |
79e53945 | 162 | |
38651674 DA |
163 | ifbdev->helper.fb = fb; |
164 | ifbdev->helper.fbdev = info; | |
785b93ef | 165 | |
79e53945 | 166 | strcpy(info->fix.id, "inteldrmfb"); |
79e53945 | 167 | |
8fd4bd22 | 168 | info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; |
79e53945 JB |
169 | info->fbops = &intelfb_ops; |
170 | ||
35c3047a CW |
171 | ret = fb_alloc_cmap(&info->cmap, 256, 0); |
172 | if (ret) { | |
173 | ret = -ENOMEM; | |
174 | goto out_unpin; | |
175 | } | |
4410f391 | 176 | /* setup aperture base/size for vesafb takeover */ |
1471ca9a MS |
177 | info->apertures = alloc_apertures(1); |
178 | if (!info->apertures) { | |
179 | ret = -ENOMEM; | |
180 | goto out_unpin; | |
181 | } | |
182 | info->apertures->ranges[0].base = dev->mode_config.fb_base; | |
93d18799 | 183 | info->apertures->ranges[0].size = dev_priv->gtt.mappable_end; |
4410f391 | 184 | |
f343c5f6 | 185 | info->fix.smem_start = dev->mode_config.fb_base + i915_gem_obj_ggtt_offset(obj); |
79e53945 JB |
186 | info->fix.smem_len = size; |
187 | ||
dd2757f8 | 188 | info->screen_base = |
f343c5f6 | 189 | ioremap_wc(dev_priv->gtt.mappable_base + i915_gem_obj_ggtt_offset(obj), |
dd2757f8 | 190 | size); |
79e53945 JB |
191 | if (!info->screen_base) { |
192 | ret = -ENOSPC; | |
b4476f52 | 193 | goto out_unpin; |
79e53945 JB |
194 | } |
195 | info->screen_size = size; | |
196 | ||
24576d23 JB |
197 | /* This driver doesn't need a VT switch to restore the mode on resume */ |
198 | info->skip_vt_switch = true; | |
199 | ||
01f2c773 | 200 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
38651674 | 201 | drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height); |
79e53945 | 202 | |
88afe715 CW |
203 | /* If the object is shmemfs backed, it will have given us zeroed pages. |
204 | * If the object is stolen however, it will be full of whatever | |
205 | * garbage was left in there. | |
206 | */ | |
8bcd4553 | 207 | if (ifbdev->fb->obj->stolen) |
88afe715 CW |
208 | memset_io(info->screen_base, 0, info->screen_size); |
209 | ||
fb2a99e1 | 210 | /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ |
79e53945 | 211 | |
f343c5f6 | 212 | DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08lx, bo %p\n", |
8be48d92 | 213 | fb->width, fb->height, |
f343c5f6 | 214 | i915_gem_obj_ggtt_offset(obj), obj); |
79e53945 JB |
215 | |
216 | mutex_unlock(&dev->struct_mutex); | |
6a9ee8af | 217 | vga_switcheroo_client_fb_set(dev->pdev, info); |
79e53945 JB |
218 | return 0; |
219 | ||
b4476f52 | 220 | out_unpin: |
d7f46fc4 | 221 | i915_gem_object_ggtt_unpin(obj); |
05394f39 | 222 | drm_gem_object_unreference(&obj->base); |
8b4f49e0 | 223 | out_unlock: |
79e53945 | 224 | mutex_unlock(&dev->struct_mutex); |
79e53945 JB |
225 | return ret; |
226 | } | |
227 | ||
67437680 PZ |
228 | /** Sets the color ramps on behalf of RandR */ |
229 | static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, | |
230 | u16 blue, int regno) | |
231 | { | |
232 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
233 | ||
234 | intel_crtc->lut_r[regno] = red >> 8; | |
235 | intel_crtc->lut_g[regno] = green >> 8; | |
236 | intel_crtc->lut_b[regno] = blue >> 8; | |
237 | } | |
238 | ||
239 | static void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, | |
240 | u16 *blue, int regno) | |
241 | { | |
242 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
243 | ||
244 | *red = intel_crtc->lut_r[regno] << 8; | |
245 | *green = intel_crtc->lut_g[regno] << 8; | |
246 | *blue = intel_crtc->lut_b[regno] << 8; | |
247 | } | |
248 | ||
4abe3520 DA |
249 | static struct drm_fb_helper_funcs intel_fb_helper_funcs = { |
250 | .gamma_set = intel_crtc_fb_gamma_set, | |
251 | .gamma_get = intel_crtc_fb_gamma_get, | |
cd5428a5 | 252 | .fb_probe = intelfb_create, |
4abe3520 | 253 | }; |
79e53945 | 254 | |
7b4f3990 CW |
255 | static void intel_fbdev_destroy(struct drm_device *dev, |
256 | struct intel_fbdev *ifbdev) | |
79e53945 | 257 | { |
8be48d92 | 258 | if (ifbdev->helper.fbdev) { |
ddfe1567 CW |
259 | struct fb_info *info = ifbdev->helper.fbdev; |
260 | ||
79e53945 JB |
261 | unregister_framebuffer(info); |
262 | iounmap(info->screen_base); | |
4abe3520 DA |
263 | if (info->cmap.len) |
264 | fb_dealloc_cmap(&info->cmap); | |
ddfe1567 | 265 | |
79e53945 JB |
266 | framebuffer_release(info); |
267 | } | |
268 | ||
4abe3520 | 269 | drm_fb_helper_fini(&ifbdev->helper); |
79e53945 | 270 | |
8bcd4553 | 271 | drm_framebuffer_unregister_private(&ifbdev->fb->base); |
ef2d633e | 272 | drm_framebuffer_unreference(&ifbdev->fb->base); |
79e53945 | 273 | } |
38651674 DA |
274 | |
275 | int intel_fbdev_init(struct drm_device *dev) | |
276 | { | |
8be48d92 | 277 | struct intel_fbdev *ifbdev; |
b51b32cd | 278 | struct drm_i915_private *dev_priv = dev->dev_private; |
5a79395b | 279 | int ret; |
8be48d92 | 280 | |
b14c5679 | 281 | ifbdev = kzalloc(sizeof(*ifbdev), GFP_KERNEL); |
8be48d92 DA |
282 | if (!ifbdev) |
283 | return -ENOMEM; | |
284 | ||
285 | dev_priv->fbdev = ifbdev; | |
4abe3520 DA |
286 | ifbdev->helper.funcs = &intel_fb_helper_funcs; |
287 | ||
5a79395b | 288 | ret = drm_fb_helper_init(dev, &ifbdev->helper, |
7eb552ae | 289 | INTEL_INFO(dev)->num_pipes, |
955382f3 | 290 | 4); |
5a79395b CW |
291 | if (ret) { |
292 | kfree(ifbdev); | |
293 | return ret; | |
294 | } | |
8be48d92 | 295 | |
0b4c0f3f | 296 | drm_fb_helper_single_add_all_connectors(&ifbdev->helper); |
20afbda2 | 297 | |
79e53945 JB |
298 | return 0; |
299 | } | |
38651674 | 300 | |
20afbda2 DV |
301 | void intel_fbdev_initial_config(struct drm_device *dev) |
302 | { | |
b51b32cd | 303 | struct drm_i915_private *dev_priv = dev->dev_private; |
20afbda2 DV |
304 | |
305 | /* Due to peculiar init order wrt to hpd handling this is separate. */ | |
306 | drm_fb_helper_initial_config(&dev_priv->fbdev->helper, 32); | |
307 | } | |
308 | ||
38651674 DA |
309 | void intel_fbdev_fini(struct drm_device *dev) |
310 | { | |
b51b32cd | 311 | struct drm_i915_private *dev_priv = dev->dev_private; |
8be48d92 DA |
312 | if (!dev_priv->fbdev) |
313 | return; | |
314 | ||
38651674 | 315 | intel_fbdev_destroy(dev, dev_priv->fbdev); |
8be48d92 | 316 | kfree(dev_priv->fbdev); |
38651674 DA |
317 | dev_priv->fbdev = NULL; |
318 | } | |
3fa016a0 DA |
319 | |
320 | void intel_fbdev_set_suspend(struct drm_device *dev, int state) | |
321 | { | |
b51b32cd | 322 | struct drm_i915_private *dev_priv = dev->dev_private; |
1ffc5289 JN |
323 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
324 | struct fb_info *info; | |
325 | ||
326 | if (!ifbdev) | |
3fa016a0 DA |
327 | return; |
328 | ||
1ffc5289 JN |
329 | info = ifbdev->helper.fbdev; |
330 | ||
331 | /* On resume from hibernation: If the object is shmemfs backed, it has | |
332 | * been restored from swap. If the object is stolen however, it will be | |
333 | * full of whatever garbage was left in there. | |
334 | */ | |
8bcd4553 | 335 | if (state == FBINFO_STATE_RUNNING && ifbdev->fb->obj->stolen) |
1ffc5289 JN |
336 | memset_io(info->screen_base, 0, info->screen_size); |
337 | ||
338 | fb_set_suspend(info, state); | |
3fa016a0 DA |
339 | } |
340 | ||
0632fef6 | 341 | void intel_fbdev_output_poll_changed(struct drm_device *dev) |
eb1f8e4f | 342 | { |
b51b32cd | 343 | struct drm_i915_private *dev_priv = dev->dev_private; |
eb1f8e4f DA |
344 | drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper); |
345 | } | |
e8e7a2b8 | 346 | |
0632fef6 | 347 | void intel_fbdev_restore_mode(struct drm_device *dev) |
e8e7a2b8 DA |
348 | { |
349 | int ret; | |
b51b32cd | 350 | struct drm_i915_private *dev_priv = dev->dev_private; |
e8e7a2b8 | 351 | |
e3c74757 BW |
352 | if (INTEL_INFO(dev)->num_pipes == 0) |
353 | return; | |
354 | ||
a0e99e68 | 355 | drm_modeset_lock_all(dev); |
c291be9d | 356 | |
e8e7a2b8 DA |
357 | ret = drm_fb_helper_restore_fbdev_mode(&dev_priv->fbdev->helper); |
358 | if (ret) | |
359 | DRM_DEBUG("failed to restore crtc mode\n"); | |
b840d907 | 360 | |
a0e99e68 | 361 | drm_modeset_unlock_all(dev); |
e8e7a2b8 | 362 | } |