C++ (Cpp) pci_dma_sync_sg_for_cpuの例

コード例 #1

ファイル: video-buf.c プロジェクト: BackupTheBerlios/tuxap

int videobuf_dma_pci_sync(struct pci_dev *dev, struct videobuf_dmabuf *dma)
{
	MAGIC_CHECK(dma->magic,MAGIC_DMABUF);
	BUG_ON(!dma->sglen);

	if (!dma->bus_addr)
		pci_dma_sync_sg_for_cpu(dev,dma->sglist,dma->nr_pages,dma->direction);
	return 0;
}

コード例 #2

ファイル: video-buf.c プロジェクト: iPodLinux/linux-2.6.7-ipod

int videobuf_dma_pci_sync(struct pci_dev *dev, struct videobuf_dmabuf *dma)
{
	if (!dma->sglen)
		BUG();

	if (!dma->bus_addr)
		pci_dma_sync_sg_for_cpu(dev,dma->sglist,dma->nr_pages,dma->direction);
	return 0;
}

コード例 #3

ファイル: videobuf-dma-sg.c プロジェクト: PennPanda/linux-repo

int videobuf_dma_sync(struct videobuf_queue *q,struct videobuf_dmabuf *dma)
{
	void                   *dev=q->dev;

	MAGIC_CHECK(dma->magic,MAGIC_DMABUF);
	BUG_ON(!dma->sglen);

	pci_dma_sync_sg_for_cpu (dev,dma->sglist,dma->nr_pages,dma->direction);
	return 0;
}

コード例 #4

ファイル: dma.c プロジェクト: Dronevery/JetsonTK1-kernel

void dma_region_sync_for_cpu(struct dma_region *dma, unsigned long offset, unsigned long len)
{
	int first, last;
	unsigned long rem;

	if (!len)
		len = 1;

	first = dma_region_find(dma, offset, &rem);
	last = dma_region_find(dma, offset + len - 1, &rem);

	pci_dma_sync_sg_for_cpu(dma->dev, &dma->sglist[first], last - first + 1, dma->direction);
}

コード例 #5

ファイル: budget-core.c プロジェクト: 03199618/linux

static void vpeirq(unsigned long data)
{
	struct budget *budget = (struct budget *) data;
	u8 *mem = (u8 *) (budget->grabbing);
	u32 olddma = budget->ttbp;
	u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
	u32 count;

	/* Ensure streamed PCI data is synced to CPU */
	pci_dma_sync_sg_for_cpu(budget->dev->pci, budget->pt.slist, budget->pt.nents, PCI_DMA_FROMDEVICE);

	/* nearest lower position divisible by 188 */
	newdma -= newdma % 188;

	if (newdma >= budget->buffer_size)
		return;

	budget->ttbp = newdma;

	if (budget->feeding == 0 || newdma == olddma)
		return;

	if (newdma > olddma) {	/* no wraparound, dump olddma..newdma */
		count = newdma - olddma;
		dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
	} else {		/* wraparound, dump olddma..buflen and 0..newdma */
		count = budget->buffer_size - olddma;
		dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
		count += newdma;
		dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);
	}

	if (count > budget->buffer_warning_threshold)
		budget->buffer_warnings++;

	if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) {
		printk("%s %s: used %d times >80%% of buffer (%u bytes now)\n",
			budget->dev->name, __func__, budget->buffer_warnings, count);
		budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT;
		budget->buffer_warnings = 0;
	}
}