dev/drm/drm_irq.c

92 		if (dev->vblank[i].refcount == 0 &&
93 		    dev->vblank[i].enabled && !dev->vblank[i].inmodeset) {
94 			DRM_DEBUG("disabling vblank on crtc %d\n", i);
95 			dev->vblank[i].last =
98 			dev->vblank[i].enabled = 0;
119 	free(dev->vblank, DRM_MEM_DRIVER);
131 	dev->vblank = malloc(sizeof(struct drm_vblank_info) * num_crtcs,
133 	if (!dev->vblank)
138 	/* Zero per-crtc vblank stuff */
141 		DRM_INIT_WAITQUEUE(&dev->vblank[i].queue);
142 		dev->vblank[i].refcount = 0;
143 		atomic_store_rel_32(&dev->vblank[i].count, 0);
192 				dev->vblank[crtc].enabled = 1;
223 		if (dev->vblank[crtc].enabled) {
224 			DRM_WAKEUP(&dev->vblank[crtc].queue);
225 			dev->vblank[crtc].last =
227 			dev->vblank[crtc].enabled = 0;
273 	return atomic_load_acq_32(&dev->vblank[crtc].count);
284 	 * here if the register is small or we had vblank interrupts off for
288 	diff = cur_vblank - dev->vblank[crtc].last;
289 	if (cur_vblank < dev->vblank[crtc].last) {
292 		DRM_DEBUG("vblank[%d].last=0x%x, cur_vblank=0x%x => diff=0x%x\n",
293 		    crtc, dev->vblank[crtc].last, cur_vblank, diff);
296 	DRM_DEBUG("enabling vblank interrupts on crtc %d, missed %d\n",
299 	atomic_add_rel_32(&dev->vblank[crtc].count, diff);
310 	if (++dev->vblank[crtc].refcount == 1 &&
311 	    !dev->vblank[crtc].enabled) {
313 		DRM_DEBUG("enabling vblank on crtc %d, ret: %d\n", crtc, ret);
315 			--dev->vblank[crtc].refcount;
317 			dev->vblank[crtc].enabled = 1;
322 	if (dev->vblank[crtc].enabled)
323 		dev->vblank[crtc].last =
334 	KASSERT(dev->vblank[crtc].refcount > 0,
338 	if (--dev->vblank[crtc].refcount == 0)
370 		if (!dev->vblank[crtc].inmodeset) {
371 			dev->vblank[crtc].inmodeset = 0x1;
373 				dev->vblank[crtc].inmodeset |= 0x2;
380 		if (dev->vblank[crtc].inmodeset) {
381 			if (dev->vblank[crtc].inmodeset & 0x2)
383 			dev->vblank[crtc].inmodeset = 0;
424 		DRM_ERROR("failed to acquire vblank counter, %d\n", ret);
449 		DRM_DEBUG("waiting on vblank count %d, crtc %d\n",
458 				ret = mtx_sleep(&dev->vblank[crtc].queue,
474 			DRM_DEBUG("vblank wait interrupted by signal\n");
488 	atomic_add_rel_32(&dev->vblank[crtc].count, 1);
489 	DRM_WAKEUP(&dev->vblank[crtc].queue);