C++ (Cpp) S3C_UDC_OTG_DOEPTSIZ примеры использования

Пример #1

static int setdma_rx(struct s3c_ep *ep, struct s3c_request *req)
{
	u32 *buf, ctrl;
	u32 length, pktcnt;
	u32 ep_num = ep_index(ep);

	buf = req->req.buf + req->req.actual;
	prefetchw(buf);

	length = req->req.length - req->req.actual;
	dma_cache_maint(buf, length, DMA_FROM_DEVICE);

	if(length == 0)
		pktcnt = 1;
	else
		pktcnt = (length - 1)/(ep->ep.maxpacket) + 1;

	ctrl =  readl(S3C_UDC_OTG_DOEPCTL(ep_num));

	writel(virt_to_phys(buf), S3C_UDC_OTG_DOEPDMA(ep_num));
	writel((pktcnt<<19)|(length<<0), S3C_UDC_OTG_DOEPTSIZ(ep_num));
	writel(DEPCTL_EPENA|DEPCTL_CNAK|ctrl, S3C_UDC_OTG_DOEPCTL(ep_num));

	DEBUG_OUT_EP("%s: EP%d RX DMA start : DOEPDMA = 0x%x, DOEPTSIZ = 0x%x, DOEPCTL = 0x%x\n"
			"\tbuf = 0x%p, pktcnt = %d, xfersize = %d\n",
			__func__, ep_num,
			readl(S3C_UDC_OTG_DOEPDMA(ep_num)),
			readl(S3C_UDC_OTG_DOEPTSIZ(ep_num)),
			readl(S3C_UDC_OTG_DOEPCTL(ep_num)),
			buf, pktcnt, length);
	return 0;

}

Пример #2

Файл: s3c_udc_otg_xfer_dma.c Проект: ShedrockN4/wiliteneo

static int setdma_rx(struct s3c_ep *ep, struct s3c_request *req)
{
	u32 *buf, ctrl;
	u32 length, pktcnt;
	u32 ep_num = ep_index(ep);
	struct s3c_udc *udc = ep->dev;
	struct device *dev = &udc->dev->dev;

	aligned_map_buf(req, ep_is_in(ep));
	buf = req->req.buf + req->req.actual;
	prefetchw(buf);

	length = req->req.length - req->req.actual;

	req->req.dma = dma_map_single(dev, buf,
				length, DMA_FROM_DEVICE);
	req->mapped = 1;

	if (length == 0)
		pktcnt = 1;
	else
		pktcnt = (length - 1)/(ep->ep.maxpacket) + 1;

	ctrl =  __raw_readl(udc->regs + S3C_UDC_OTG_DOEPCTL(ep_num));

	__raw_writel(virt_to_phys(buf),
		udc->regs + S3C_UDC_OTG_DOEPDMA(ep_num));
	__raw_writel((pktcnt<<19) | (length<<0),
		udc->regs + S3C_UDC_OTG_DOEPTSIZ(ep_num));
	__raw_writel(DEPCTL_EPENA | DEPCTL_CNAK | ctrl,
		udc->regs + S3C_UDC_OTG_DOEPCTL(ep_num));

	DEBUG_OUT_EP("%s: EP%d RX DMA start : DOEPDMA = 0x%x,"
			"DOEPTSIZ = 0x%x, DOEPCTL = 0x%x\n"
			"\tbuf = 0x%p, pktcnt = %d, xfersize = %d\n",
			__func__, ep_num,
			__raw_readl(udc->regs + S3C_UDC_OTG_DOEPDMA(ep_num)),
			__raw_readl(udc->regs + S3C_UDC_OTG_DOEPTSIZ(ep_num)),
			__raw_readl(udc->regs + S3C_UDC_OTG_DOEPCTL(ep_num)),
			buf, pktcnt, length);
	return 0;
}

Пример #3

static inline void s3c_udc_pre_setup(void)
{
	u32 ep_ctrl;

	DEBUG_IN_EP("%s : Prepare Setup packets.\n", __func__);

	writel((1 << 19)|sizeof(struct usb_ctrlrequest), S3C_UDC_OTG_DOEPTSIZ(EP0_CON));
	writel(virt_to_phys(&usb_ctrl), S3C_UDC_OTG_DOEPDMA(EP0_CON));

	ep_ctrl = readl(S3C_UDC_OTG_DOEPCTL(EP0_CON));
	writel(ep_ctrl|DEPCTL_EPENA|DEPCTL_CNAK, S3C_UDC_OTG_DOEPCTL(EP0_CON));
}

Пример #4

static void complete_rx(struct s3c_udc *dev, u8 ep_num)
{
	struct s3c_ep *ep = &dev->ep[ep_num];
	struct s3c_request *req = NULL;
	u32 ep_tsr = 0, xfer_size = 0, xfer_length, is_short = 0;

	if (list_empty(&ep->queue)) {
		DEBUG_OUT_EP("%s: RX DMA done : NULL REQ on OUT EP-%d\n",
					__func__, ep_num);
		return;

	}

	req = list_entry(ep->queue.next, struct s3c_request, queue);

	ep_tsr = readl(S3C_UDC_OTG_DOEPTSIZ(ep_num));

	if (ep_num == EP0_CON)
		xfer_size = (ep_tsr & 0x7f);

	else
		xfer_size = (ep_tsr & 0x7fff);
	
	dma_cache_maint(req->req.buf, req->req.length, DMA_FROM_DEVICE);
	xfer_length = req->req.length - xfer_size;
	req->req.actual += min(xfer_length, req->req.length - req->req.actual);
	is_short = (xfer_length < ep->ep.maxpacket);

	DEBUG_OUT_EP("%s: RX DMA done : ep = %d, rx bytes = %d/%d, "
		     "is_short = %d, DOEPTSIZ = 0x%x, remained bytes = %d\n",
			__func__, ep_num, req->req.actual, req->req.length,
			is_short, ep_tsr, xfer_size);

	if (is_short || req->req.actual == xfer_length) {
		if(ep_num == EP0_CON && dev->ep0state == DATA_STATE_RECV) {
			DEBUG_OUT_EP("	=> Send ZLP\n");
			dev->ep0state = WAIT_FOR_SETUP;
			s3c_udc_ep0_zlp();

		} else {
			done(ep, req, 0);

			if(!list_empty(&ep->queue)) {
				req = list_entry(ep->queue.next, struct s3c_request, queue);
				DEBUG_OUT_EP("%s: Next Rx request start...\n", __func__);
				if (ep_num == EP0_CON && dev->ep0state == WAIT_FOR_SETUP)
					setdma_rx(ep, req, 1);
				else
					setdma_rx(ep, req, 0);
			}
		}
	}

Пример #5

Файл: s3c_udc_otg_xfer_dma.c Проект: perillamint/tizen-linux-3.0

static inline void s3c_udc_pre_setup(struct s3c_udc *dev)
{
	u32 ep_ctrl;

	DEBUG_IN_EP("%s : Prepare Setup packets.\n", __func__);

	__raw_writel((3<<29) | (1<<19) | sizeof(struct usb_ctrlrequest),
		dev->regs + S3C_UDC_OTG_DOEPTSIZ(EP0_CON));
	__raw_writel(dev->usb_ctrl_dma, dev->regs + S3C_UDC_OTG_DOEPDMA(EP0_CON));

	ep_ctrl = __raw_readl(dev->regs + S3C_UDC_OTG_DOEPCTL(EP0_CON));
	__raw_writel(ep_ctrl|DEPCTL_EPENA|DEPCTL_CNAK,
		dev->regs + S3C_UDC_OTG_DOEPCTL(EP0_CON));
}