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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 | ||
cd5428a5 | 60 | static int intelfb_create(struct drm_fb_helper *helper, |
8be48d92 | 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; | |
35c3047a | 66 | struct drm_i915_private *dev_priv = dev->dev_private; |
79e53945 | 67 | struct fb_info *info; |
79e53945 | 68 | struct drm_framebuffer *fb; |
3a7f2f6a | 69 | struct drm_mode_fb_cmd2 mode_cmd = {}; |
05394f39 | 70 | struct drm_i915_gem_object *obj; |
79e53945 | 71 | struct device *device = &dev->pdev->dev; |
57084d05 | 72 | int size, ret; |
79e53945 | 73 | |
b8c00ac5 | 74 | /* we don't do packed 24bpp */ |
38651674 DA |
75 | if (sizes->surface_bpp == 24) |
76 | sizes->surface_bpp = 32; | |
b8c00ac5 | 77 | |
38651674 DA |
78 | mode_cmd.width = sizes->surface_width; |
79 | mode_cmd.height = sizes->surface_height; | |
79e53945 | 80 | |
308e5bcb JB |
81 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((sizes->surface_bpp + 7) / |
82 | 8), 64); | |
83 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, | |
84 | sizes->surface_depth); | |
79e53945 | 85 | |
308e5bcb | 86 | size = mode_cmd.pitches[0] * mode_cmd.height; |
79e53945 | 87 | size = ALIGN(size, PAGE_SIZE); |
0ffb0ff2 CW |
88 | obj = i915_gem_object_create_stolen(dev, size); |
89 | if (obj == NULL) | |
90 | obj = i915_gem_alloc_object(dev, size); | |
05394f39 | 91 | if (!obj) { |
1ae8c0a5 | 92 | DRM_ERROR("failed to allocate framebuffer\n"); |
79e53945 JB |
93 | ret = -ENOMEM; |
94 | goto out; | |
95 | } | |
79e53945 JB |
96 | |
97 | mutex_lock(&dev->struct_mutex); | |
98 | ||
7213342d | 99 | /* Flush everything out, we'll be doing GTT only from now on */ |
c43b5634 | 100 | ret = intel_pin_and_fence_fb_obj(dev, obj, NULL); |
79e53945 JB |
101 | if (ret) { |
102 | DRM_ERROR("failed to pin fb: %d\n", ret); | |
103 | goto out_unref; | |
104 | } | |
105 | ||
8be48d92 | 106 | info = framebuffer_alloc(0, device); |
79e53945 JB |
107 | if (!info) { |
108 | ret = -ENOMEM; | |
b4476f52 | 109 | goto out_unpin; |
79e53945 JB |
110 | } |
111 | ||
3430824b | 112 | info->par = helper; |
79e53945 | 113 | |
05394f39 | 114 | ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj); |
cce13ff7 CW |
115 | if (ret) |
116 | goto out_unpin; | |
79e53945 | 117 | |
38651674 | 118 | fb = &ifbdev->ifb.base; |
79e53945 | 119 | |
38651674 DA |
120 | ifbdev->helper.fb = fb; |
121 | ifbdev->helper.fbdev = info; | |
785b93ef | 122 | |
79e53945 | 123 | strcpy(info->fix.id, "inteldrmfb"); |
79e53945 | 124 | |
8fd4bd22 | 125 | info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; |
79e53945 JB |
126 | info->fbops = &intelfb_ops; |
127 | ||
35c3047a CW |
128 | ret = fb_alloc_cmap(&info->cmap, 256, 0); |
129 | if (ret) { | |
130 | ret = -ENOMEM; | |
131 | goto out_unpin; | |
132 | } | |
4410f391 | 133 | /* setup aperture base/size for vesafb takeover */ |
1471ca9a MS |
134 | info->apertures = alloc_apertures(1); |
135 | if (!info->apertures) { | |
136 | ret = -ENOMEM; | |
137 | goto out_unpin; | |
138 | } | |
139 | info->apertures->ranges[0].base = dev->mode_config.fb_base; | |
93d18799 | 140 | info->apertures->ranges[0].size = dev_priv->gtt.mappable_end; |
4410f391 | 141 | |
f343c5f6 | 142 | info->fix.smem_start = dev->mode_config.fb_base + i915_gem_obj_ggtt_offset(obj); |
79e53945 JB |
143 | info->fix.smem_len = size; |
144 | ||
dd2757f8 | 145 | info->screen_base = |
f343c5f6 | 146 | ioremap_wc(dev_priv->gtt.mappable_base + i915_gem_obj_ggtt_offset(obj), |
dd2757f8 | 147 | size); |
79e53945 JB |
148 | if (!info->screen_base) { |
149 | ret = -ENOSPC; | |
b4476f52 | 150 | goto out_unpin; |
79e53945 JB |
151 | } |
152 | info->screen_size = size; | |
153 | ||
24576d23 JB |
154 | /* This driver doesn't need a VT switch to restore the mode on resume */ |
155 | info->skip_vt_switch = true; | |
156 | ||
01f2c773 | 157 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
38651674 | 158 | drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height); |
79e53945 | 159 | |
88afe715 CW |
160 | /* If the object is shmemfs backed, it will have given us zeroed pages. |
161 | * If the object is stolen however, it will be full of whatever | |
162 | * garbage was left in there. | |
163 | */ | |
164 | if (ifbdev->ifb.obj->stolen) | |
165 | memset_io(info->screen_base, 0, info->screen_size); | |
166 | ||
fb2a99e1 | 167 | /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ |
79e53945 | 168 | |
f343c5f6 | 169 | DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08lx, bo %p\n", |
8be48d92 | 170 | fb->width, fb->height, |
f343c5f6 | 171 | i915_gem_obj_ggtt_offset(obj), obj); |
79e53945 | 172 | |
79e53945 JB |
173 | |
174 | mutex_unlock(&dev->struct_mutex); | |
6a9ee8af | 175 | vga_switcheroo_client_fb_set(dev->pdev, info); |
79e53945 JB |
176 | return 0; |
177 | ||
b4476f52 | 178 | out_unpin: |
05394f39 | 179 | i915_gem_object_unpin(obj); |
79e53945 | 180 | out_unref: |
05394f39 | 181 | drm_gem_object_unreference(&obj->base); |
79e53945 JB |
182 | mutex_unlock(&dev->struct_mutex); |
183 | out: | |
184 | return ret; | |
185 | } | |
186 | ||
4abe3520 DA |
187 | static struct drm_fb_helper_funcs intel_fb_helper_funcs = { |
188 | .gamma_set = intel_crtc_fb_gamma_set, | |
189 | .gamma_get = intel_crtc_fb_gamma_get, | |
cd5428a5 | 190 | .fb_probe = intelfb_create, |
4abe3520 | 191 | }; |
79e53945 | 192 | |
7b4f3990 CW |
193 | static void intel_fbdev_destroy(struct drm_device *dev, |
194 | struct intel_fbdev *ifbdev) | |
79e53945 JB |
195 | { |
196 | struct fb_info *info; | |
38651674 | 197 | struct intel_framebuffer *ifb = &ifbdev->ifb; |
79e53945 | 198 | |
8be48d92 DA |
199 | if (ifbdev->helper.fbdev) { |
200 | info = ifbdev->helper.fbdev; | |
79e53945 JB |
201 | unregister_framebuffer(info); |
202 | iounmap(info->screen_base); | |
4abe3520 DA |
203 | if (info->cmap.len) |
204 | fb_dealloc_cmap(&info->cmap); | |
79e53945 JB |
205 | framebuffer_release(info); |
206 | } | |
207 | ||
4abe3520 | 208 | drm_fb_helper_fini(&ifbdev->helper); |
79e53945 | 209 | |
36206361 | 210 | drm_framebuffer_unregister_private(&ifb->base); |
38651674 | 211 | drm_framebuffer_cleanup(&ifb->base); |
29d08b3e | 212 | if (ifb->obj) { |
05394f39 | 213 | drm_gem_object_unreference_unlocked(&ifb->obj->base); |
dab8dcfa | 214 | ifb->obj = NULL; |
29d08b3e | 215 | } |
79e53945 | 216 | } |
38651674 DA |
217 | |
218 | int intel_fbdev_init(struct drm_device *dev) | |
219 | { | |
8be48d92 | 220 | struct intel_fbdev *ifbdev; |
b51b32cd | 221 | struct drm_i915_private *dev_priv = dev->dev_private; |
5a79395b | 222 | int ret; |
8be48d92 DA |
223 | |
224 | ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); | |
225 | if (!ifbdev) | |
226 | return -ENOMEM; | |
227 | ||
228 | dev_priv->fbdev = ifbdev; | |
4abe3520 DA |
229 | ifbdev->helper.funcs = &intel_fb_helper_funcs; |
230 | ||
5a79395b | 231 | ret = drm_fb_helper_init(dev, &ifbdev->helper, |
7eb552ae | 232 | INTEL_INFO(dev)->num_pipes, |
5a79395b CW |
233 | INTELFB_CONN_LIMIT); |
234 | if (ret) { | |
235 | kfree(ifbdev); | |
236 | return ret; | |
237 | } | |
8be48d92 | 238 | |
0b4c0f3f | 239 | drm_fb_helper_single_add_all_connectors(&ifbdev->helper); |
20afbda2 | 240 | |
79e53945 JB |
241 | return 0; |
242 | } | |
38651674 | 243 | |
20afbda2 DV |
244 | void intel_fbdev_initial_config(struct drm_device *dev) |
245 | { | |
b51b32cd | 246 | struct drm_i915_private *dev_priv = dev->dev_private; |
20afbda2 DV |
247 | |
248 | /* Due to peculiar init order wrt to hpd handling this is separate. */ | |
249 | drm_fb_helper_initial_config(&dev_priv->fbdev->helper, 32); | |
250 | } | |
251 | ||
38651674 DA |
252 | void intel_fbdev_fini(struct drm_device *dev) |
253 | { | |
b51b32cd | 254 | struct drm_i915_private *dev_priv = dev->dev_private; |
8be48d92 DA |
255 | if (!dev_priv->fbdev) |
256 | return; | |
257 | ||
38651674 | 258 | intel_fbdev_destroy(dev, dev_priv->fbdev); |
8be48d92 | 259 | kfree(dev_priv->fbdev); |
38651674 DA |
260 | dev_priv->fbdev = NULL; |
261 | } | |
3fa016a0 DA |
262 | |
263 | void intel_fbdev_set_suspend(struct drm_device *dev, int state) | |
264 | { | |
b51b32cd | 265 | struct drm_i915_private *dev_priv = dev->dev_private; |
1ffc5289 JN |
266 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
267 | struct fb_info *info; | |
268 | ||
269 | if (!ifbdev) | |
3fa016a0 DA |
270 | return; |
271 | ||
1ffc5289 JN |
272 | info = ifbdev->helper.fbdev; |
273 | ||
274 | /* On resume from hibernation: If the object is shmemfs backed, it has | |
275 | * been restored from swap. If the object is stolen however, it will be | |
276 | * full of whatever garbage was left in there. | |
277 | */ | |
b6f3eff7 | 278 | if (state == FBINFO_STATE_RUNNING && ifbdev->ifb.obj->stolen) |
1ffc5289 JN |
279 | memset_io(info->screen_base, 0, info->screen_size); |
280 | ||
281 | fb_set_suspend(info, state); | |
3fa016a0 DA |
282 | } |
283 | ||
79e53945 | 284 | MODULE_LICENSE("GPL and additional rights"); |
eb1f8e4f DA |
285 | |
286 | void intel_fb_output_poll_changed(struct drm_device *dev) | |
287 | { | |
b51b32cd | 288 | struct drm_i915_private *dev_priv = dev->dev_private; |
eb1f8e4f DA |
289 | drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper); |
290 | } | |
e8e7a2b8 DA |
291 | |
292 | void intel_fb_restore_mode(struct drm_device *dev) | |
293 | { | |
294 | int ret; | |
b51b32cd | 295 | struct drm_i915_private *dev_priv = dev->dev_private; |
e8e7a2b8 | 296 | |
e3c74757 BW |
297 | if (INTEL_INFO(dev)->num_pipes == 0) |
298 | return; | |
299 | ||
a0e99e68 | 300 | drm_modeset_lock_all(dev); |
c291be9d | 301 | |
e8e7a2b8 DA |
302 | ret = drm_fb_helper_restore_fbdev_mode(&dev_priv->fbdev->helper); |
303 | if (ret) | |
304 | DRM_DEBUG("failed to restore crtc mode\n"); | |
b840d907 | 305 | |
a0e99e68 | 306 | drm_modeset_unlock_all(dev); |
e8e7a2b8 | 307 | } |