Function txgbe_dev_rx_init

dpdk/drivers/net/txgbe/txgbe_rxtx.c:4305–4457

* Initializes Receive Unit. */

 * Initializes Receive Unit.
 */
int __rte_cold
txgbe_dev_rx_init(struct rte_eth_dev *dev)
{
	struct txgbe_hw *hw;
	struct txgbe_rx_queue *rxq;
	uint64_t bus_addr;
	uint32_t fctrl;
	uint32_t hlreg0;
	uint32_t srrctl;
	uint32_t rdrxctl;
	uint32_t rxcsum;
	uint16_t buf_size;
	uint16_t i;
	struct rte_eth_rxmode *rx_conf = &dev->data->dev_conf.rxmode;
	int rc;

	PMD_INIT_FUNC_TRACE();
	hw = TXGBE_DEV_HW(dev);

	/*
	 * Make sure receives are disabled while setting
	 * up the RX context (registers, descriptor rings, etc.).
	 */
	wr32m(hw, TXGBE_MACRXCFG, TXGBE_MACRXCFG_ENA, 0);
	wr32m(hw, TXGBE_PBRXCTL, TXGBE_PBRXCTL_ENA, 0);

	/* Enable receipt of broadcasted frames */
	fctrl = rd32(hw, TXGBE_PSRCTL);
	fctrl |= TXGBE_PSRCTL_BCA;
	wr32(hw, TXGBE_PSRCTL, fctrl);

	/*
	 * Configure CRC stripping, if any.
	 */
	hlreg0 = rd32(hw, TXGBE_SECRXCTL);
	if (rx_conf->offloads & RTE_ETH_RX_OFFLOAD_KEEP_CRC)
		hlreg0 &= ~TXGBE_SECRXCTL_CRCSTRIP;
	else
		hlreg0 |= TXGBE_SECRXCTL_CRCSTRIP;
	wr32(hw, TXGBE_SECRXCTL, hlreg0);

	/*
	 * Configure jumbo frame support, if any.
	 */
	wr32m(hw, TXGBE_FRMSZ, TXGBE_FRMSZ_MAX_MASK,
		TXGBE_FRMSZ_MAX(dev->data->mtu + TXGBE_ETH_OVERHEAD));

	/*
	 * If loopback mode is configured, set LPBK bit.
	 */
	hlreg0 = rd32(hw, TXGBE_PSRCTL);
	if (hw->mac.type == txgbe_mac_raptor &&
	    dev->data->dev_conf.lpbk_mode)
		hlreg0 |= TXGBE_PSRCTL_LBENA;
	else
		hlreg0 &= ~TXGBE_PSRCTL_LBENA;

	wr32(hw, TXGBE_PSRCTL, hlreg0);