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 | ||
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); | |
65 | struct drm_device *dev = helper->dev; | |
3a7f2f6a | 66 | struct drm_mode_fb_cmd2 mode_cmd = {}; |
05394f39 | 67 | struct drm_i915_gem_object *obj; |
57084d05 | 68 | int size, ret; |
79e53945 | 69 | |
b8c00ac5 | 70 | /* we don't do packed 24bpp */ |
38651674 DA |
71 | if (sizes->surface_bpp == 24) |
72 | sizes->surface_bpp = 32; | |
b8c00ac5 | 73 | |
38651674 DA |
74 | mode_cmd.width = sizes->surface_width; |
75 | mode_cmd.height = sizes->surface_height; | |
79e53945 | 76 | |
de45eaf7 PZ |
77 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * |
78 | DIV_ROUND_UP(sizes->surface_bpp, 8), 64); | |
308e5bcb JB |
79 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, |
80 | sizes->surface_depth); | |
79e53945 | 81 | |
308e5bcb | 82 | size = mode_cmd.pitches[0] * mode_cmd.height; |
79e53945 | 83 | size = ALIGN(size, PAGE_SIZE); |
0ffb0ff2 CW |
84 | obj = i915_gem_object_create_stolen(dev, size); |
85 | if (obj == NULL) | |
86 | obj = i915_gem_alloc_object(dev, size); | |
05394f39 | 87 | if (!obj) { |
1ae8c0a5 | 88 | DRM_ERROR("failed to allocate framebuffer\n"); |
79e53945 JB |
89 | ret = -ENOMEM; |
90 | goto out; | |
91 | } | |
79e53945 | 92 | |
7213342d | 93 | /* Flush everything out, we'll be doing GTT only from now on */ |
c43b5634 | 94 | ret = intel_pin_and_fence_fb_obj(dev, obj, NULL); |
79e53945 JB |
95 | if (ret) { |
96 | DRM_ERROR("failed to pin fb: %d\n", ret); | |
97 | goto out_unref; | |
98 | } | |
99 | ||
8b4f49e0 JB |
100 | ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj); |
101 | if (ret) | |
102 | goto out_unpin; | |
103 | ||
104 | return 0; | |
105 | ||
106 | out_unpin: | |
107 | i915_gem_object_unpin(obj); | |
108 | out_unref: | |
109 | drm_gem_object_unreference(&obj->base); | |
110 | out: | |
111 | return ret; | |
112 | } | |
113 | ||
114 | static int intelfb_create(struct drm_fb_helper *helper, | |
115 | struct drm_fb_helper_surface_size *sizes) | |
116 | { | |
117 | struct intel_fbdev *ifbdev = | |
118 | container_of(helper, struct intel_fbdev, helper); | |
119 | struct intel_framebuffer *intel_fb = &ifbdev->ifb; | |
120 | struct drm_device *dev = helper->dev; | |
121 | struct drm_i915_private *dev_priv = dev->dev_private; | |
122 | struct fb_info *info; | |
123 | struct drm_framebuffer *fb; | |
124 | struct drm_i915_gem_object *obj; | |
125 | int size, ret; | |
126 | ||
127 | mutex_lock(&dev->struct_mutex); | |
128 | ||
129 | if (!intel_fb->obj) { | |
48e92120 | 130 | DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n"); |
8b4f49e0 JB |
131 | ret = intelfb_alloc(helper, sizes); |
132 | if (ret) | |
133 | goto out_unlock; | |
134 | } else { | |
48e92120 | 135 | DRM_DEBUG_KMS("re-using BIOS fb\n"); |
8b4f49e0 JB |
136 | sizes->fb_width = intel_fb->base.width; |
137 | sizes->fb_height = intel_fb->base.height; | |
138 | } | |
139 | ||
140 | obj = intel_fb->obj; | |
141 | size = obj->base.size; | |
142 | ||
143 | info = framebuffer_alloc(0, &dev->pdev->dev); | |
79e53945 JB |
144 | if (!info) { |
145 | ret = -ENOMEM; | |
b4476f52 | 146 | goto out_unpin; |
79e53945 JB |
147 | } |
148 | ||
3430824b | 149 | info->par = helper; |
79e53945 | 150 | |
38651674 | 151 | fb = &ifbdev->ifb.base; |
79e53945 | 152 | |
38651674 DA |
153 | ifbdev->helper.fb = fb; |
154 | ifbdev->helper.fbdev = info; | |
785b93ef | 155 | |
79e53945 | 156 | strcpy(info->fix.id, "inteldrmfb"); |
79e53945 | 157 | |
8fd4bd22 | 158 | info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; |
79e53945 JB |
159 | info->fbops = &intelfb_ops; |
160 | ||
35c3047a CW |
161 | ret = fb_alloc_cmap(&info->cmap, 256, 0); |
162 | if (ret) { | |
163 | ret = -ENOMEM; | |
164 | goto out_unpin; | |
165 | } | |
4410f391 | 166 | /* setup aperture base/size for vesafb takeover */ |
1471ca9a MS |
167 | info->apertures = alloc_apertures(1); |
168 | if (!info->apertures) { | |
169 | ret = -ENOMEM; | |
170 | goto out_unpin; | |
171 | } | |
172 | info->apertures->ranges[0].base = dev->mode_config.fb_base; | |
93d18799 | 173 | info->apertures->ranges[0].size = dev_priv->gtt.mappable_end; |
4410f391 | 174 | |
f343c5f6 | 175 | info->fix.smem_start = dev->mode_config.fb_base + i915_gem_obj_ggtt_offset(obj); |
79e53945 JB |
176 | info->fix.smem_len = size; |
177 | ||
dd2757f8 | 178 | info->screen_base = |
f343c5f6 | 179 | ioremap_wc(dev_priv->gtt.mappable_base + i915_gem_obj_ggtt_offset(obj), |
dd2757f8 | 180 | size); |
79e53945 JB |
181 | if (!info->screen_base) { |
182 | ret = -ENOSPC; | |
b4476f52 | 183 | goto out_unpin; |
79e53945 JB |
184 | } |
185 | info->screen_size = size; | |
186 | ||
24576d23 JB |
187 | /* This driver doesn't need a VT switch to restore the mode on resume */ |
188 | info->skip_vt_switch = true; | |
189 | ||
01f2c773 | 190 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
38651674 | 191 | drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height); |
79e53945 | 192 | |
88afe715 CW |
193 | /* If the object is shmemfs backed, it will have given us zeroed pages. |
194 | * If the object is stolen however, it will be full of whatever | |
195 | * garbage was left in there. | |
196 | */ | |
197 | if (ifbdev->ifb.obj->stolen) | |
198 | memset_io(info->screen_base, 0, info->screen_size); | |
199 | ||
fb2a99e1 | 200 | /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ |
79e53945 | 201 | |
f343c5f6 | 202 | DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08lx, bo %p\n", |
8be48d92 | 203 | fb->width, fb->height, |
f343c5f6 | 204 | i915_gem_obj_ggtt_offset(obj), obj); |
79e53945 JB |
205 | |
206 | mutex_unlock(&dev->struct_mutex); | |
6a9ee8af | 207 | vga_switcheroo_client_fb_set(dev->pdev, info); |
79e53945 JB |
208 | return 0; |
209 | ||
b4476f52 | 210 | out_unpin: |
05394f39 | 211 | i915_gem_object_unpin(obj); |
05394f39 | 212 | drm_gem_object_unreference(&obj->base); |
8b4f49e0 | 213 | out_unlock: |
79e53945 | 214 | mutex_unlock(&dev->struct_mutex); |
79e53945 JB |
215 | return ret; |
216 | } | |
217 | ||
67437680 PZ |
218 | /** Sets the color ramps on behalf of RandR */ |
219 | static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, | |
220 | u16 blue, int regno) | |
221 | { | |
222 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
223 | ||
224 | intel_crtc->lut_r[regno] = red >> 8; | |
225 | intel_crtc->lut_g[regno] = green >> 8; | |
226 | intel_crtc->lut_b[regno] = blue >> 8; | |
227 | } | |
228 | ||
229 | static void intel_crtc_fb_gamma_get(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 | *red = intel_crtc->lut_r[regno] << 8; | |
235 | *green = intel_crtc->lut_g[regno] << 8; | |
236 | *blue = intel_crtc->lut_b[regno] << 8; | |
237 | } | |
238 | ||
4abe3520 DA |
239 | static struct drm_fb_helper_funcs intel_fb_helper_funcs = { |
240 | .gamma_set = intel_crtc_fb_gamma_set, | |
241 | .gamma_get = intel_crtc_fb_gamma_get, | |
cd5428a5 | 242 | .fb_probe = intelfb_create, |
4abe3520 | 243 | }; |
79e53945 | 244 | |
7b4f3990 CW |
245 | static void intel_fbdev_destroy(struct drm_device *dev, |
246 | struct intel_fbdev *ifbdev) | |
79e53945 | 247 | { |
8be48d92 | 248 | if (ifbdev->helper.fbdev) { |
ddfe1567 CW |
249 | struct fb_info *info = ifbdev->helper.fbdev; |
250 | ||
79e53945 JB |
251 | unregister_framebuffer(info); |
252 | iounmap(info->screen_base); | |
4abe3520 DA |
253 | if (info->cmap.len) |
254 | fb_dealloc_cmap(&info->cmap); | |
ddfe1567 | 255 | |
79e53945 JB |
256 | framebuffer_release(info); |
257 | } | |
258 | ||
4abe3520 | 259 | drm_fb_helper_fini(&ifbdev->helper); |
79e53945 | 260 | |
ddfe1567 CW |
261 | drm_framebuffer_unregister_private(&ifbdev->ifb.base); |
262 | intel_framebuffer_fini(&ifbdev->ifb); | |
79e53945 | 263 | } |
38651674 DA |
264 | |
265 | int intel_fbdev_init(struct drm_device *dev) | |
266 | { | |
8be48d92 | 267 | struct intel_fbdev *ifbdev; |
b51b32cd | 268 | struct drm_i915_private *dev_priv = dev->dev_private; |
5a79395b | 269 | int ret; |
8be48d92 | 270 | |
b14c5679 | 271 | ifbdev = kzalloc(sizeof(*ifbdev), GFP_KERNEL); |
8be48d92 DA |
272 | if (!ifbdev) |
273 | return -ENOMEM; | |
274 | ||
275 | dev_priv->fbdev = ifbdev; | |
4abe3520 DA |
276 | ifbdev->helper.funcs = &intel_fb_helper_funcs; |
277 | ||
5a79395b | 278 | ret = drm_fb_helper_init(dev, &ifbdev->helper, |
7eb552ae | 279 | INTEL_INFO(dev)->num_pipes, |
955382f3 | 280 | 4); |
5a79395b CW |
281 | if (ret) { |
282 | kfree(ifbdev); | |
283 | return ret; | |
284 | } | |
8be48d92 | 285 | |
0b4c0f3f | 286 | drm_fb_helper_single_add_all_connectors(&ifbdev->helper); |
20afbda2 | 287 | |
79e53945 JB |
288 | return 0; |
289 | } | |
38651674 | 290 | |
20afbda2 DV |
291 | void intel_fbdev_initial_config(struct drm_device *dev) |
292 | { | |
b51b32cd | 293 | struct drm_i915_private *dev_priv = dev->dev_private; |
20afbda2 DV |
294 | |
295 | /* Due to peculiar init order wrt to hpd handling this is separate. */ | |
296 | drm_fb_helper_initial_config(&dev_priv->fbdev->helper, 32); | |
297 | } | |
298 | ||
38651674 DA |
299 | void intel_fbdev_fini(struct drm_device *dev) |
300 | { | |
b51b32cd | 301 | struct drm_i915_private *dev_priv = dev->dev_private; |
8be48d92 DA |
302 | if (!dev_priv->fbdev) |
303 | return; | |
304 | ||
38651674 | 305 | intel_fbdev_destroy(dev, dev_priv->fbdev); |
8be48d92 | 306 | kfree(dev_priv->fbdev); |
38651674 DA |
307 | dev_priv->fbdev = NULL; |
308 | } | |
3fa016a0 DA |
309 | |
310 | void intel_fbdev_set_suspend(struct drm_device *dev, int state) | |
311 | { | |
b51b32cd | 312 | struct drm_i915_private *dev_priv = dev->dev_private; |
1ffc5289 JN |
313 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
314 | struct fb_info *info; | |
315 | ||
316 | if (!ifbdev) | |
3fa016a0 DA |
317 | return; |
318 | ||
1ffc5289 JN |
319 | info = ifbdev->helper.fbdev; |
320 | ||
321 | /* On resume from hibernation: If the object is shmemfs backed, it has | |
322 | * been restored from swap. If the object is stolen however, it will be | |
323 | * full of whatever garbage was left in there. | |
324 | */ | |
b6f3eff7 | 325 | if (state == FBINFO_STATE_RUNNING && ifbdev->ifb.obj->stolen) |
1ffc5289 JN |
326 | memset_io(info->screen_base, 0, info->screen_size); |
327 | ||
328 | fb_set_suspend(info, state); | |
3fa016a0 DA |
329 | } |
330 | ||
79e53945 | 331 | MODULE_LICENSE("GPL and additional rights"); |
eb1f8e4f | 332 | |
0632fef6 | 333 | void intel_fbdev_output_poll_changed(struct drm_device *dev) |
eb1f8e4f | 334 | { |
b51b32cd | 335 | struct drm_i915_private *dev_priv = dev->dev_private; |
eb1f8e4f DA |
336 | drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper); |
337 | } | |
e8e7a2b8 | 338 | |
0632fef6 | 339 | void intel_fbdev_restore_mode(struct drm_device *dev) |
e8e7a2b8 DA |
340 | { |
341 | int ret; | |
b51b32cd | 342 | struct drm_i915_private *dev_priv = dev->dev_private; |
e8e7a2b8 | 343 | |
e3c74757 BW |
344 | if (INTEL_INFO(dev)->num_pipes == 0) |
345 | return; | |
346 | ||
a0e99e68 | 347 | drm_modeset_lock_all(dev); |
c291be9d | 348 | |
e8e7a2b8 DA |
349 | ret = drm_fb_helper_restore_fbdev_mode(&dev_priv->fbdev->helper); |
350 | if (ret) | |
351 | DRM_DEBUG("failed to restore crtc mode\n"); | |
b840d907 | 352 | |
a0e99e68 | 353 | drm_modeset_unlock_all(dev); |
e8e7a2b8 | 354 | } |