1 /*
2 * Copyright (C) 2008 Maarten Maathuis.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 */
26
27 #include "drmP.h"
28 #include "drm_crtc_helper.h"
29 #include "nouveau_drv.h"
30 #include "nouveau_fb.h"
31 #include "nouveau_fbcon.h"
32 #include "nouveau_hw.h"
33 #include "nouveau_crtc.h"
34 #include "nouveau_dma.h"
35 #include "nv50_display.h"
36
37 static void
nouveau_user_framebuffer_destroy(struct drm_framebuffer * drm_fb)38 nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
39 {
40 struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
41
42 if (fb->nvbo)
43 drm_gem_object_unreference_unlocked(fb->nvbo->gem);
44
45 drm_framebuffer_cleanup(drm_fb);
46 kfree(fb);
47 }
48
49 static int
nouveau_user_framebuffer_create_handle(struct drm_framebuffer * drm_fb,struct drm_file * file_priv,unsigned int * handle)50 nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb,
51 struct drm_file *file_priv,
52 unsigned int *handle)
53 {
54 struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
55
56 return drm_gem_handle_create(file_priv, fb->nvbo->gem, handle);
57 }
58
59 static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
60 .destroy = nouveau_user_framebuffer_destroy,
61 .create_handle = nouveau_user_framebuffer_create_handle,
62 };
63
64 int
nouveau_framebuffer_init(struct drm_device * dev,struct nouveau_framebuffer * nv_fb,struct drm_mode_fb_cmd * mode_cmd,struct nouveau_bo * nvbo)65 nouveau_framebuffer_init(struct drm_device *dev,
66 struct nouveau_framebuffer *nv_fb,
67 struct drm_mode_fb_cmd *mode_cmd,
68 struct nouveau_bo *nvbo)
69 {
70 struct drm_nouveau_private *dev_priv = dev->dev_private;
71 struct drm_framebuffer *fb = &nv_fb->base;
72 int ret;
73
74 ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
75 if (ret) {
76 return ret;
77 }
78
79 drm_helper_mode_fill_fb_struct(fb, mode_cmd);
80 nv_fb->nvbo = nvbo;
81
82 if (dev_priv->card_type >= NV_50) {
83 u32 tile_flags = nouveau_bo_tile_layout(nvbo);
84 if (tile_flags == 0x7a00 ||
85 tile_flags == 0xfe00)
86 nv_fb->r_dma = NvEvoFB32;
87 else
88 if (tile_flags == 0x7000)
89 nv_fb->r_dma = NvEvoFB16;
90 else
91 nv_fb->r_dma = NvEvoVRAM_LP;
92
93 switch (fb->depth) {
94 case 8: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_8; break;
95 case 15: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_15; break;
96 case 16: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_16; break;
97 case 24:
98 case 32: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_24; break;
99 case 30: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_30; break;
100 default:
101 NV_ERROR(dev, "unknown depth %d\n", fb->depth);
102 return -EINVAL;
103 }
104
105 if (dev_priv->chipset == 0x50)
106 nv_fb->r_format |= (tile_flags << 8);
107
108 if (!tile_flags)
109 nv_fb->r_pitch = 0x00100000 | fb->pitch;
110 else {
111 u32 mode = nvbo->tile_mode;
112 if (dev_priv->card_type >= NV_C0)
113 mode >>= 4;
114 nv_fb->r_pitch = ((fb->pitch / 4) << 4) | mode;
115 }
116 }
117
118 return 0;
119 }
120
121 static struct drm_framebuffer *
nouveau_user_framebuffer_create(struct drm_device * dev,struct drm_file * file_priv,struct drm_mode_fb_cmd * mode_cmd)122 nouveau_user_framebuffer_create(struct drm_device *dev,
123 struct drm_file *file_priv,
124 struct drm_mode_fb_cmd *mode_cmd)
125 {
126 struct nouveau_framebuffer *nouveau_fb;
127 struct drm_gem_object *gem;
128 int ret;
129
130 gem = drm_gem_object_lookup(dev, file_priv, mode_cmd->handle);
131 if (!gem)
132 return ERR_PTR(-ENOENT);
133
134 nouveau_fb = kzalloc(sizeof(struct nouveau_framebuffer), GFP_KERNEL);
135 if (!nouveau_fb)
136 return ERR_PTR(-ENOMEM);
137
138 ret = nouveau_framebuffer_init(dev, nouveau_fb, mode_cmd, nouveau_gem_object(gem));
139 if (ret) {
140 drm_gem_object_unreference(gem);
141 return ERR_PTR(ret);
142 }
143
144 return &nouveau_fb->base;
145 }
146
147 const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
148 .fb_create = nouveau_user_framebuffer_create,
149 .output_poll_changed = nouveau_fbcon_output_poll_changed,
150 };
151
152 int
nouveau_vblank_enable(struct drm_device * dev,int crtc)153 nouveau_vblank_enable(struct drm_device *dev, int crtc)
154 {
155 struct drm_nouveau_private *dev_priv = dev->dev_private;
156
157 if (dev_priv->card_type >= NV_50)
158 nv_mask(dev, NV50_PDISPLAY_INTR_EN_1, 0,
159 NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc));
160 else
161 NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0,
162 NV_PCRTC_INTR_0_VBLANK);
163
164 return 0;
165 }
166
167 void
nouveau_vblank_disable(struct drm_device * dev,int crtc)168 nouveau_vblank_disable(struct drm_device *dev, int crtc)
169 {
170 struct drm_nouveau_private *dev_priv = dev->dev_private;
171
172 if (dev_priv->card_type >= NV_50)
173 nv_mask(dev, NV50_PDISPLAY_INTR_EN_1,
174 NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc), 0);
175 else
176 NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0, 0);
177 }
178
179 static int
nouveau_page_flip_reserve(struct nouveau_bo * old_bo,struct nouveau_bo * new_bo)180 nouveau_page_flip_reserve(struct nouveau_bo *old_bo,
181 struct nouveau_bo *new_bo)
182 {
183 int ret;
184
185 ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM);
186 if (ret)
187 return ret;
188
189 ret = ttm_bo_reserve(&new_bo->bo, false, false, false, 0);
190 if (ret)
191 goto fail;
192
193 ret = ttm_bo_reserve(&old_bo->bo, false, false, false, 0);
194 if (ret)
195 goto fail_unreserve;
196
197 return 0;
198
199 fail_unreserve:
200 ttm_bo_unreserve(&new_bo->bo);
201 fail:
202 nouveau_bo_unpin(new_bo);
203 return ret;
204 }
205
206 static void
nouveau_page_flip_unreserve(struct nouveau_bo * old_bo,struct nouveau_bo * new_bo,struct nouveau_fence * fence)207 nouveau_page_flip_unreserve(struct nouveau_bo *old_bo,
208 struct nouveau_bo *new_bo,
209 struct nouveau_fence *fence)
210 {
211 nouveau_bo_fence(new_bo, fence);
212 ttm_bo_unreserve(&new_bo->bo);
213
214 nouveau_bo_fence(old_bo, fence);
215 ttm_bo_unreserve(&old_bo->bo);
216
217 nouveau_bo_unpin(old_bo);
218 }
219
220 static int
nouveau_page_flip_emit(struct nouveau_channel * chan,struct nouveau_bo * old_bo,struct nouveau_bo * new_bo,struct nouveau_page_flip_state * s,struct nouveau_fence ** pfence)221 nouveau_page_flip_emit(struct nouveau_channel *chan,
222 struct nouveau_bo *old_bo,
223 struct nouveau_bo *new_bo,
224 struct nouveau_page_flip_state *s,
225 struct nouveau_fence **pfence)
226 {
227 struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
228 struct drm_device *dev = chan->dev;
229 unsigned long flags;
230 int ret;
231
232 /* Queue it to the pending list */
233 spin_lock_irqsave(&dev->event_lock, flags);
234 list_add_tail(&s->head, &chan->nvsw.flip);
235 spin_unlock_irqrestore(&dev->event_lock, flags);
236
237 /* Synchronize with the old framebuffer */
238 ret = nouveau_fence_sync(old_bo->bo.sync_obj, chan);
239 if (ret)
240 goto fail;
241
242 /* Emit the pageflip */
243 ret = RING_SPACE(chan, 2);
244 if (ret)
245 goto fail;
246
247 if (dev_priv->card_type < NV_C0)
248 BEGIN_RING(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
249 else
250 BEGIN_NVC0(chan, 2, NvSubM2MF, 0x0500, 1);
251 OUT_RING (chan, 0);
252 FIRE_RING (chan);
253
254 ret = nouveau_fence_new(chan, pfence, true);
255 if (ret)
256 goto fail;
257
258 return 0;
259 fail:
260 spin_lock_irqsave(&dev->event_lock, flags);
261 list_del(&s->head);
262 spin_unlock_irqrestore(&dev->event_lock, flags);
263 return ret;
264 }
265
266 int
nouveau_crtc_page_flip(struct drm_crtc * crtc,struct drm_framebuffer * fb,struct drm_pending_vblank_event * event)267 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
268 struct drm_pending_vblank_event *event)
269 {
270 struct drm_device *dev = crtc->dev;
271 struct drm_nouveau_private *dev_priv = dev->dev_private;
272 struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->fb)->nvbo;
273 struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
274 struct nouveau_page_flip_state *s;
275 struct nouveau_channel *chan;
276 struct nouveau_fence *fence;
277 int ret;
278
279 if (dev_priv->engine.graph.accel_blocked)
280 return -ENODEV;
281
282 s = kzalloc(sizeof(*s), GFP_KERNEL);
283 if (!s)
284 return -ENOMEM;
285
286 /* Don't let the buffers go away while we flip */
287 ret = nouveau_page_flip_reserve(old_bo, new_bo);
288 if (ret)
289 goto fail_free;
290
291 /* Initialize a page flip struct */
292 *s = (struct nouveau_page_flip_state)
293 { { }, event, nouveau_crtc(crtc)->index,
294 fb->bits_per_pixel, fb->pitch, crtc->x, crtc->y,
295 new_bo->bo.offset };
296
297 /* Choose the channel the flip will be handled in */
298 chan = nouveau_fence_channel(new_bo->bo.sync_obj);
299 if (!chan)
300 chan = nouveau_channel_get_unlocked(dev_priv->channel);
301 mutex_lock(&chan->mutex);
302
303 /* Emit a page flip */
304 if (dev_priv->card_type >= NV_50) {
305 ret = nv50_display_flip_next(crtc, fb, chan);
306 if (ret) {
307 nouveau_channel_put(&chan);
308 goto fail_unreserve;
309 }
310 }
311
312 ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
313 nouveau_channel_put(&chan);
314 if (ret)
315 goto fail_unreserve;
316
317 /* Update the crtc struct and cleanup */
318 crtc->fb = fb;
319
320 nouveau_page_flip_unreserve(old_bo, new_bo, fence);
321 nouveau_fence_unref(&fence);
322 return 0;
323
324 fail_unreserve:
325 nouveau_page_flip_unreserve(old_bo, new_bo, NULL);
326 fail_free:
327 kfree(s);
328 return ret;
329 }
330
331 int
nouveau_finish_page_flip(struct nouveau_channel * chan,struct nouveau_page_flip_state * ps)332 nouveau_finish_page_flip(struct nouveau_channel *chan,
333 struct nouveau_page_flip_state *ps)
334 {
335 struct drm_device *dev = chan->dev;
336 struct nouveau_page_flip_state *s;
337 unsigned long flags;
338
339 spin_lock_irqsave(&dev->event_lock, flags);
340
341 if (list_empty(&chan->nvsw.flip)) {
342 NV_ERROR(dev, "Unexpected pageflip in channel %d.\n", chan->id);
343 spin_unlock_irqrestore(&dev->event_lock, flags);
344 return -EINVAL;
345 }
346
347 s = list_first_entry(&chan->nvsw.flip,
348 struct nouveau_page_flip_state, head);
349 if (s->event) {
350 struct drm_pending_vblank_event *e = s->event;
351 struct timeval now;
352
353 do_gettimeofday(&now);
354 e->event.sequence = 0;
355 e->event.tv_sec = now.tv_sec;
356 e->event.tv_usec = now.tv_usec;
357 list_add_tail(&e->base.link, &e->base.file_priv->event_list);
358 wake_up_interruptible(&e->base.file_priv->event_wait);
359 }
360
361 list_del(&s->head);
362 if (ps)
363 *ps = *s;
364 kfree(s);
365
366 spin_unlock_irqrestore(&dev->event_lock, flags);
367 return 0;
368 }
369