C++ (Cpp) DIEPT_SIZ_PKT_CNT Examples

Example #1

File: s3c_udc_otg_xfer_dma.c Project: 0s4l/u-boot-xlnx

int setdma_tx(struct s3c_ep *ep, struct s3c_request *req)
{
	u32 *buf, ctrl = 0;
	u32 length, pktcnt;
	u32 ep_num = ep_index(ep);
	u32 *p = the_controller->dma_buf[ep_index(ep)+1];

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

	if (ep_num == EP0_CON)
		length = min(length, (u32)ep_maxpacket(ep));

	ep->len = length;
	ep->dma_buf = buf;
	memcpy(p, ep->dma_buf, length);

	flush_dcache_range((unsigned long) p ,
			   (unsigned long) p + DMA_BUFFER_SIZE);

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

	/* Flush the endpoint's Tx FIFO */
	writel(TX_FIFO_NUMBER(ep->fifo_num), &reg->grstctl);
	writel(TX_FIFO_NUMBER(ep->fifo_num) | TX_FIFO_FLUSH, &reg->grstctl);
	while (readl(&reg->grstctl) & TX_FIFO_FLUSH)
		;

	writel(the_controller->dma_addr[ep_index(ep)+1],
	       &reg->in_endp[ep_num].diepdma);
	writel(DIEPT_SIZ_PKT_CNT(pktcnt) | DIEPT_SIZ_XFER_SIZE(length),
	       &reg->in_endp[ep_num].dieptsiz);

	ctrl = readl(&reg->in_endp[ep_num].diepctl);

	/* Write the FIFO number to be used for this endpoint */
	ctrl &= DIEPCTL_TX_FIFO_NUM_MASK;
	ctrl |= DIEPCTL_TX_FIFO_NUM(ep->fifo_num);

	/* Clear reserved (Next EP) bits */
	ctrl = (ctrl&~(EP_MASK<<DEPCTL_NEXT_EP_BIT));

	writel(DEPCTL_EPENA|DEPCTL_CNAK|ctrl, &reg->in_endp[ep_num].diepctl);

	debug_cond(DEBUG_IN_EP,
		"%s:EP%d TX DMA start : DIEPDMA0 = 0x%x,"
		"DIEPTSIZ0 = 0x%x, DIEPCTL0 = 0x%x\n"
		"\tbuf = 0x%p, pktcnt = %d, xfersize = %d\n",
		__func__, ep_num,
		readl(&reg->in_endp[ep_num].diepdma),
		readl(&reg->in_endp[ep_num].dieptsiz),
		readl(&reg->in_endp[ep_num].diepctl),
		buf, pktcnt, length);

	return length;
}

Example #2

File: dwc2_udc_otg_xfer_dma.c Project: OpenNoah/u-boot

static inline void dwc2_udc_ep0_zlp(struct dwc2_udc *dev)
{
	u32 ep_ctrl;

	writel(usb_ctrl_dma_addr, &reg->in_endp[EP0_CON].diepdma);
	writel(DIEPT_SIZ_PKT_CNT(1), &reg->in_endp[EP0_CON].dieptsiz);

	ep_ctrl = readl(&reg->in_endp[EP0_CON].diepctl);
	writel(ep_ctrl|DEPCTL_EPENA|DEPCTL_CNAK,
	       &reg->in_endp[EP0_CON].diepctl);

	debug_cond(DEBUG_EP0 != 0, "%s:EP0 ZLP DIEPCTL0 = 0x%x\n",
		__func__, readl(&reg->in_endp[EP0_CON].diepctl));
	dev->ep0state = WAIT_FOR_IN_COMPLETE;
}

Example #3

File: s3c_udc_otg_xfer_dma.c Project: 0s4l/u-boot-xlnx

static inline void s3c_udc_ep0_zlp(struct s3c_udc *dev)
{
	u32 ep_ctrl;

	flush_dcache_range((unsigned long) usb_ctrl_dma_addr,
			   (unsigned long) usb_ctrl_dma_addr
			   + DMA_BUFFER_SIZE);

	writel(usb_ctrl_dma_addr, &reg->in_endp[EP0_CON].diepdma);
	writel(DIEPT_SIZ_PKT_CNT(1), &reg->in_endp[EP0_CON].dieptsiz);

	ep_ctrl = readl(&reg->in_endp[EP0_CON].diepctl);
	writel(ep_ctrl|DEPCTL_EPENA|DEPCTL_CNAK,
	       &reg->in_endp[EP0_CON].diepctl);

	debug_cond(DEBUG_EP0 != 0, "%s:EP0 ZLP DIEPCTL0 = 0x%x\n",
		__func__, readl(&reg->in_endp[EP0_CON].diepctl));
	dev->ep0state = WAIT_FOR_IN_COMPLETE;
}