C++ (Cpp) via_dmablit_grab_slot Examples

Example #1

File: via_dmablit.c Project: jobi/drm-psb

static int 
via_dmablit(drm_device_t *dev, drm_via_dmablit_t *xfer)	 
{
	drm_via_private_t *dev_priv = (drm_via_private_t *)dev->dev_private;
	drm_via_sg_info_t *vsg;
	drm_via_blitq_t *blitq;
	int ret;
	int engine;
	unsigned long irqsave;

	if (dev_priv == NULL) {
		DRM_ERROR("Called without initialization.\n");
		return DRM_ERR(EINVAL);
	}

	engine = (xfer->to_fb) ? 0 : 1;
	blitq = dev_priv->blit_queues + engine;
	if (0 != (ret = via_dmablit_grab_slot(blitq, engine))) {
		return ret;
	}
	if (NULL == (vsg = kmalloc(sizeof(*vsg), GFP_KERNEL))) {
		via_dmablit_release_slot(blitq);
		return DRM_ERR(ENOMEM);
	}
	if (0 != (ret = via_build_sg_info(dev, vsg, xfer))) {
		via_dmablit_release_slot(blitq);
		kfree(vsg);
		return ret;
	}
	spin_lock_irqsave(&blitq->blit_lock, irqsave);

	blitq->blits[blitq->head++] = vsg;
	if (blitq->head >= VIA_NUM_BLIT_SLOTS) 
		blitq->head = 0;
	blitq->num_outstanding++;
	xfer->sync.sync_handle = ++blitq->cur_blit_handle; 

	spin_unlock_irqrestore(&blitq->blit_lock, irqsave);
	xfer->sync.engine = engine;

       	via_dmablit_handler(dev, engine, 0);

	return 0;
}

Example #2

File: via_dmablit.c Project: JabirTech/Source

/*
 * Grab a free slot. Build blit info and queue a blit.
 */
static int
via_dmablit(struct drm_device *dev, drm_via_dmablit_t *xfer)
{
	drm_via_private_t *dev_priv = (drm_via_private_t *)dev->dev_private;
	drm_via_sg_info_t *vsg;
	drm_via_blitq_t *blitq;
	int ret;
	int engine;

	if (dev_priv == NULL) {
		DRM_ERROR("Called without initialization.\n");
		return -EINVAL;
	}

	engine = (xfer->to_fb) ? 0 : 1;
	blitq = dev_priv->blit_queues + engine;
	if (0 != (ret = via_dmablit_grab_slot(blitq, engine))) {
		return ret;
	}
	if (NULL == (vsg = malloc(sizeof(*vsg), DRM_MEM_DRIVER,
	    M_NOWAIT | M_ZERO))) {
		via_dmablit_release_slot(blitq);
		return -ENOMEM;
	}
	if (0 != (ret = via_build_sg_info(dev, vsg, xfer))) {
		via_dmablit_release_slot(blitq);
		free(vsg, DRM_MEM_DRIVER);
		return ret;
	}
	mtx_lock(&blitq->blit_lock);

	blitq->blits[blitq->head++] = vsg;
	if (blitq->head >= VIA_NUM_BLIT_SLOTS)
		blitq->head = 0;
	blitq->num_outstanding++;
	xfer->sync.sync_handle = ++blitq->cur_blit_handle;

	mtx_unlock(&blitq->blit_lock);
	xfer->sync.engine = engine;

	via_dmablit_handler(dev, engine, 0);

	return 0;
}