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 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 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 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 * 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 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 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 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 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 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 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 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