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 if (dev_priv->card_type < NV_D0) 110 nv_fb->r_pitch = 0x00100000 | fb->pitch; 111 else 112 nv_fb->r_pitch = 0x01000000 | fb->pitch; 113 } else { 114 u32 mode = nvbo->tile_mode; 115 if (dev_priv->card_type >= NV_C0) 116 mode >>= 4; 117 nv_fb->r_pitch = ((fb->pitch / 4) << 4) | mode; 118 } 119 } 120 121 return 0; 122 } 123 124 static struct drm_framebuffer * 125 nouveau_user_framebuffer_create(struct drm_device *dev, 126 struct drm_file *file_priv, 127 struct drm_mode_fb_cmd *mode_cmd) 128 { 129 struct nouveau_framebuffer *nouveau_fb; 130 struct drm_gem_object *gem; 131 int ret; 132 133 gem = drm_gem_object_lookup(dev, file_priv, mode_cmd->handle); 134 if (!gem) 135 return ERR_PTR(-ENOENT); 136 137 nouveau_fb = kzalloc(sizeof(struct nouveau_framebuffer), GFP_KERNEL); 138 if (!nouveau_fb) 139 return ERR_PTR(-ENOMEM); 140 141 ret = nouveau_framebuffer_init(dev, nouveau_fb, mode_cmd, nouveau_gem_object(gem)); 142 if (ret) { 143 drm_gem_object_unreference(gem); 144 return ERR_PTR(ret); 145 } 146 147 return &nouveau_fb->base; 148 } 149 150 const struct drm_mode_config_funcs nouveau_mode_config_funcs = { 151 .fb_create = nouveau_user_framebuffer_create, 152 .output_poll_changed = nouveau_fbcon_output_poll_changed, 153 }; 154 155 int 156 nouveau_vblank_enable(struct drm_device *dev, int crtc) 157 { 158 struct drm_nouveau_private *dev_priv = dev->dev_private; 159 160 if (dev_priv->card_type >= NV_50) 161 nv_mask(dev, NV50_PDISPLAY_INTR_EN_1, 0, 162 NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc)); 163 else 164 NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0, 165 NV_PCRTC_INTR_0_VBLANK); 166 167 return 0; 168 } 169 170 void 171 nouveau_vblank_disable(struct drm_device *dev, int crtc) 172 { 173 struct drm_nouveau_private *dev_priv = dev->dev_private; 174 175 if (dev_priv->card_type >= NV_50) 176 nv_mask(dev, NV50_PDISPLAY_INTR_EN_1, 177 NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc), 0); 178 else 179 NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0, 0); 180 } 181 182 static int 183 nouveau_page_flip_reserve(struct nouveau_bo *old_bo, 184 struct nouveau_bo *new_bo) 185 { 186 int ret; 187 188 ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM); 189 if (ret) 190 return ret; 191 192 ret = ttm_bo_reserve(&new_bo->bo, false, false, false, 0); 193 if (ret) 194 goto fail; 195 196 ret = ttm_bo_reserve(&old_bo->bo, false, false, false, 0); 197 if (ret) 198 goto fail_unreserve; 199 200 return 0; 201 202 fail_unreserve: 203 ttm_bo_unreserve(&new_bo->bo); 204 fail: 205 nouveau_bo_unpin(new_bo); 206 return ret; 207 } 208 209 static void 210 nouveau_page_flip_unreserve(struct nouveau_bo *old_bo, 211 struct nouveau_bo *new_bo, 212 struct nouveau_fence *fence) 213 { 214 nouveau_bo_fence(new_bo, fence); 215 ttm_bo_unreserve(&new_bo->bo); 216 217 nouveau_bo_fence(old_bo, fence); 218 ttm_bo_unreserve(&old_bo->bo); 219 220 nouveau_bo_unpin(old_bo); 221 } 222 223 static int 224 nouveau_page_flip_emit(struct nouveau_channel *chan, 225 struct nouveau_bo *old_bo, 226 struct nouveau_bo *new_bo, 227 struct nouveau_page_flip_state *s, 228 struct nouveau_fence **pfence) 229 { 230 struct drm_nouveau_private *dev_priv = chan->dev->dev_private; 231 struct drm_device *dev = chan->dev; 232 unsigned long flags; 233 int ret; 234 235 /* Queue it to the pending list */ 236 spin_lock_irqsave(&dev->event_lock, flags); 237 list_add_tail(&s->head, &chan->nvsw.flip); 238 spin_unlock_irqrestore(&dev->event_lock, flags); 239 240 /* Synchronize with the old framebuffer */ 241 ret = nouveau_fence_sync(old_bo->bo.sync_obj, chan); 242 if (ret) 243 goto fail; 244 245 /* Emit the pageflip */ 246 ret = RING_SPACE(chan, 2); 247 if (ret) 248 goto fail; 249 250 if (dev_priv->card_type < NV_C0) 251 BEGIN_RING(chan, NvSubSw, NV_SW_PAGE_FLIP, 1); 252 else 253 BEGIN_NVC0(chan, 2, NvSubM2MF, 0x0500, 1); 254 OUT_RING (chan, 0); 255 FIRE_RING (chan); 256 257 ret = nouveau_fence_new(chan, pfence, true); 258 if (ret) 259 goto fail; 260 261 return 0; 262 fail: 263 spin_lock_irqsave(&dev->event_lock, flags); 264 list_del(&s->head); 265 spin_unlock_irqrestore(&dev->event_lock, flags); 266 return ret; 267 } 268 269 int 270 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb, 271 struct drm_pending_vblank_event *event) 272 { 273 struct drm_device *dev = crtc->dev; 274 struct drm_nouveau_private *dev_priv = dev->dev_private; 275 struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->fb)->nvbo; 276 struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo; 277 struct nouveau_page_flip_state *s; 278 struct nouveau_channel *chan; 279 struct nouveau_fence *fence; 280 int ret; 281 282 if (!dev_priv->channel) 283 return -ENODEV; 284 285 s = kzalloc(sizeof(*s), GFP_KERNEL); 286 if (!s) 287 return -ENOMEM; 288 289 /* Don't let the buffers go away while we flip */ 290 ret = nouveau_page_flip_reserve(old_bo, new_bo); 291 if (ret) 292 goto fail_free; 293 294 /* Initialize a page flip struct */ 295 *s = (struct nouveau_page_flip_state) 296 { { }, event, nouveau_crtc(crtc)->index, 297 fb->bits_per_pixel, fb->pitch, crtc->x, crtc->y, 298 new_bo->bo.offset }; 299 300 /* Choose the channel the flip will be handled in */ 301 chan = nouveau_fence_channel(new_bo->bo.sync_obj); 302 if (!chan) 303 chan = nouveau_channel_get_unlocked(dev_priv->channel); 304 mutex_lock(&chan->mutex); 305 306 /* Emit a page flip */ 307 if (dev_priv->card_type >= NV_50) { 308 ret = nv50_display_flip_next(crtc, fb, chan); 309 if (ret) { 310 nouveau_channel_put(&chan); 311 goto fail_unreserve; 312 } 313 } 314 315 ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence); 316 nouveau_channel_put(&chan); 317 if (ret) 318 goto fail_unreserve; 319 320 /* Update the crtc struct and cleanup */ 321 crtc->fb = fb; 322 323 nouveau_page_flip_unreserve(old_bo, new_bo, fence); 324 nouveau_fence_unref(&fence); 325 return 0; 326 327 fail_unreserve: 328 nouveau_page_flip_unreserve(old_bo, new_bo, NULL); 329 fail_free: 330 kfree(s); 331 return ret; 332 } 333 334 int 335 nouveau_finish_page_flip(struct nouveau_channel *chan, 336 struct nouveau_page_flip_state *ps) 337 { 338 struct drm_device *dev = chan->dev; 339 struct nouveau_page_flip_state *s; 340 unsigned long flags; 341 342 spin_lock_irqsave(&dev->event_lock, flags); 343 344 if (list_empty(&chan->nvsw.flip)) { 345 NV_ERROR(dev, "Unexpected pageflip in channel %d.\n", chan->id); 346 spin_unlock_irqrestore(&dev->event_lock, flags); 347 return -EINVAL; 348 } 349 350 s = list_first_entry(&chan->nvsw.flip, 351 struct nouveau_page_flip_state, head); 352 if (s->event) { 353 struct drm_pending_vblank_event *e = s->event; 354 struct timeval now; 355 356 do_gettimeofday(&now); 357 e->event.sequence = 0; 358 e->event.tv_sec = now.tv_sec; 359 e->event.tv_usec = now.tv_usec; 360 list_add_tail(&e->base.link, &e->base.file_priv->event_list); 361 wake_up_interruptible(&e->base.file_priv->event_wait); 362 } 363 364 list_del(&s->head); 365 if (ps) 366 *ps = *s; 367 kfree(s); 368 369 spin_unlock_irqrestore(&dev->event_lock, flags); 370 return 0; 371 } 372