#include <rte_common.h>
#include <rte_ethdev.h>
+#include <rte_ethdev_driver.h>
+#include <rte_mbuf.h>
#include "txgbe_logs.h"
#include "base/txgbe.h"
return tx_offload_capa;
}
+void __rte_cold
+txgbe_set_rx_function(struct rte_eth_dev *dev)
+{
+ RTE_SET_USED(dev);
+}
+
+/**
+ * txgbe_get_rscctl_maxdesc
+ *
+ * @pool Memory pool of the Rx queue
+ */
+static inline uint32_t
+txgbe_get_rscctl_maxdesc(struct rte_mempool *pool)
+{
+ struct rte_pktmbuf_pool_private *mp_priv = rte_mempool_get_priv(pool);
+
+ uint16_t maxdesc =
+ RTE_IPV4_MAX_PKT_LEN /
+ (mp_priv->mbuf_data_room_size - RTE_PKTMBUF_HEADROOM);
+
+ if (maxdesc >= 16)
+ return TXGBE_RXCFG_RSCMAX_16;
+ else if (maxdesc >= 8)
+ return TXGBE_RXCFG_RSCMAX_8;
+ else if (maxdesc >= 4)
+ return TXGBE_RXCFG_RSCMAX_4;
+ else
+ return TXGBE_RXCFG_RSCMAX_1;
+}
+
+/**
+ * txgbe_set_rsc - configure RSC related port HW registers
+ *
+ * Configures the port's RSC related registers.
+ *
+ * @dev port handle
+ *
+ * Returns 0 in case of success or a non-zero error code
+ */
+static int
+txgbe_set_rsc(struct rte_eth_dev *dev)
+{
+ struct rte_eth_rxmode *rx_conf = &dev->data->dev_conf.rxmode;
+ struct txgbe_hw *hw = TXGBE_DEV_HW(dev);
+ struct rte_eth_dev_info dev_info = { 0 };
+ bool rsc_capable = false;
+ uint16_t i;
+ uint32_t rdrxctl;
+ uint32_t rfctl;
+
+ /* Sanity check */
+ dev->dev_ops->dev_infos_get(dev, &dev_info);
+ if (dev_info.rx_offload_capa & DEV_RX_OFFLOAD_TCP_LRO)
+ rsc_capable = true;
+
+ if (!rsc_capable && (rx_conf->offloads & DEV_RX_OFFLOAD_TCP_LRO)) {
+ PMD_INIT_LOG(CRIT, "LRO is requested on HW that doesn't "
+ "support it");
+ return -EINVAL;
+ }
+
+ /* RSC global configuration */
+
+ if ((rx_conf->offloads & DEV_RX_OFFLOAD_KEEP_CRC) &&
+ (rx_conf->offloads & DEV_RX_OFFLOAD_TCP_LRO)) {
+ PMD_INIT_LOG(CRIT, "LRO can't be enabled when HW CRC "
+ "is disabled");
+ return -EINVAL;
+ }
+
+ rfctl = rd32(hw, TXGBE_PSRCTL);
+ if (rsc_capable && (rx_conf->offloads & DEV_RX_OFFLOAD_TCP_LRO))
+ rfctl &= ~TXGBE_PSRCTL_RSCDIA;
+ else
+ rfctl |= TXGBE_PSRCTL_RSCDIA;
+ wr32(hw, TXGBE_PSRCTL, rfctl);
+
+ /* If LRO hasn't been requested - we are done here. */
+ if (!(rx_conf->offloads & DEV_RX_OFFLOAD_TCP_LRO))
+ return 0;
+
+ /* Set PSRCTL.RSCACK bit */
+ rdrxctl = rd32(hw, TXGBE_PSRCTL);
+ rdrxctl |= TXGBE_PSRCTL_RSCACK;
+ wr32(hw, TXGBE_PSRCTL, rdrxctl);
+
+ /* Per-queue RSC configuration */
+ for (i = 0; i < dev->data->nb_rx_queues; i++) {
+ struct txgbe_rx_queue *rxq = dev->data->rx_queues[i];
+ uint32_t srrctl =
+ rd32(hw, TXGBE_RXCFG(rxq->reg_idx));
+ uint32_t psrtype =
+ rd32(hw, TXGBE_POOLRSS(rxq->reg_idx));
+ uint32_t eitr =
+ rd32(hw, TXGBE_ITR(rxq->reg_idx));
+
+ /*
+ * txgbe PMD doesn't support header-split at the moment.
+ */
+ srrctl &= ~TXGBE_RXCFG_HDRLEN_MASK;
+ srrctl |= TXGBE_RXCFG_HDRLEN(128);
+
+ /*
+ * TODO: Consider setting the Receive Descriptor Minimum
+ * Threshold Size for an RSC case. This is not an obviously
+ * beneficiary option but the one worth considering...
+ */
+
+ srrctl |= TXGBE_RXCFG_RSCENA;
+ srrctl &= ~TXGBE_RXCFG_RSCMAX_MASK;
+ srrctl |= txgbe_get_rscctl_maxdesc(rxq->mb_pool);
+ psrtype |= TXGBE_POOLRSS_L4HDR;
+
+ /*
+ * RSC: Set ITR interval corresponding to 2K ints/s.
+ *
+ * Full-sized RSC aggregations for a 10Gb/s link will
+ * arrive at about 20K aggregation/s rate.
+ *
+ * 2K inst/s rate will make only 10% of the
+ * aggregations to be closed due to the interrupt timer
+ * expiration for a streaming at wire-speed case.
+ *
+ * For a sparse streaming case this setting will yield
+ * at most 500us latency for a single RSC aggregation.
+ */
+ eitr &= ~TXGBE_ITR_IVAL_MASK;
+ eitr |= TXGBE_ITR_IVAL_10G(TXGBE_QUEUE_ITR_INTERVAL_DEFAULT);
+ eitr |= TXGBE_ITR_WRDSA;
+
+ wr32(hw, TXGBE_RXCFG(rxq->reg_idx), srrctl);
+ wr32(hw, TXGBE_POOLRSS(rxq->reg_idx), psrtype);
+ wr32(hw, TXGBE_ITR(rxq->reg_idx), eitr);
+
+ /*
+ * RSC requires the mapping of the queue to the
+ * interrupt vector.
+ */
+ txgbe_set_ivar_map(hw, 0, rxq->reg_idx, i);
+ }
+
+ dev->data->lro = 1;
+
+ PMD_INIT_LOG(DEBUG, "enabling LRO mode");
+
+ return 0;
+}
+
+/*
+ * 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 & DEV_RX_OFFLOAD_KEEP_CRC)
+ hlreg0 &= ~TXGBE_SECRXCTL_CRCSTRIP;
+ else
+ hlreg0 |= TXGBE_SECRXCTL_CRCSTRIP;
+ wr32(hw, TXGBE_SECRXCTL, hlreg0);
+
+ /*
+ * Configure jumbo frame support, if any.
+ */
+ if (rx_conf->offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
+ wr32m(hw, TXGBE_FRMSZ, TXGBE_FRMSZ_MAX_MASK,
+ TXGBE_FRMSZ_MAX(rx_conf->max_rx_pkt_len));
+ } else {
+ wr32m(hw, TXGBE_FRMSZ, TXGBE_FRMSZ_MAX_MASK,
+ TXGBE_FRMSZ_MAX(TXGBE_FRAME_SIZE_DFT));
+ }
+
+ /*
+ * 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);
+
+ /*
+ * Assume no header split and no VLAN strip support
+ * on any Rx queue first .
+ */
+ rx_conf->offloads &= ~DEV_RX_OFFLOAD_VLAN_STRIP;
+
+ /* Setup RX queues */
+ for (i = 0; i < dev->data->nb_rx_queues; i++) {
+ rxq = dev->data->rx_queues[i];
+
+ /*
+ * Reset crc_len in case it was changed after queue setup by a
+ * call to configure.
+ */
+ if (rx_conf->offloads & DEV_RX_OFFLOAD_KEEP_CRC)
+ rxq->crc_len = RTE_ETHER_CRC_LEN;
+ else
+ rxq->crc_len = 0;
+
+ /* Setup the Base and Length of the Rx Descriptor Rings */
+ bus_addr = rxq->rx_ring_phys_addr;
+ wr32(hw, TXGBE_RXBAL(rxq->reg_idx),
+ (uint32_t)(bus_addr & BIT_MASK32));
+ wr32(hw, TXGBE_RXBAH(rxq->reg_idx),
+ (uint32_t)(bus_addr >> 32));
+ wr32(hw, TXGBE_RXRP(rxq->reg_idx), 0);
+ wr32(hw, TXGBE_RXWP(rxq->reg_idx), 0);
+
+ srrctl = TXGBE_RXCFG_RNGLEN(rxq->nb_rx_desc);
+
+ /* Set if packets are dropped when no descriptors available */
+ if (rxq->drop_en)
+ srrctl |= TXGBE_RXCFG_DROP;
+
+ /*
+ * Configure the RX buffer size in the PKTLEN field of
+ * the RXCFG register of the queue.
+ * The value is in 1 KB resolution. Valid values can be from
+ * 1 KB to 16 KB.
+ */
+ buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mb_pool) -
+ RTE_PKTMBUF_HEADROOM);
+ buf_size = ROUND_UP(buf_size, 0x1 << 10);
+ srrctl |= TXGBE_RXCFG_PKTLEN(buf_size);
+
+ wr32(hw, TXGBE_RXCFG(rxq->reg_idx), srrctl);
+
+ /* It adds dual VLAN length for supporting dual VLAN */
+ if (dev->data->dev_conf.rxmode.max_rx_pkt_len +
+ 2 * TXGBE_VLAN_TAG_SIZE > buf_size)
+ dev->data->scattered_rx = 1;
+ if (rxq->offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
+ rx_conf->offloads |= DEV_RX_OFFLOAD_VLAN_STRIP;
+ }
+
+ if (rx_conf->offloads & DEV_RX_OFFLOAD_SCATTER)
+ dev->data->scattered_rx = 1;
+
+ /*
+ * Setup the Checksum Register.
+ * Disable Full-Packet Checksum which is mutually exclusive with RSS.
+ * Enable IP/L4 checksum computation by hardware if requested to do so.
+ */
+ rxcsum = rd32(hw, TXGBE_PSRCTL);
+ rxcsum |= TXGBE_PSRCTL_PCSD;
+ if (rx_conf->offloads & DEV_RX_OFFLOAD_CHECKSUM)
+ rxcsum |= TXGBE_PSRCTL_L4CSUM;
+ else
+ rxcsum &= ~TXGBE_PSRCTL_L4CSUM;
+
+ wr32(hw, TXGBE_PSRCTL, rxcsum);
+
+ if (hw->mac.type == txgbe_mac_raptor) {
+ rdrxctl = rd32(hw, TXGBE_SECRXCTL);
+ if (rx_conf->offloads & DEV_RX_OFFLOAD_KEEP_CRC)
+ rdrxctl &= ~TXGBE_SECRXCTL_CRCSTRIP;
+ else
+ rdrxctl |= TXGBE_SECRXCTL_CRCSTRIP;
+ wr32(hw, TXGBE_SECRXCTL, rdrxctl);
+ }
+
+ rc = txgbe_set_rsc(dev);
+ if (rc)
+ return rc;
+
+ txgbe_set_rx_function(dev);
+
+ return 0;
+}
+
+/*
+ * Initializes Transmit Unit.
+ */
+void __rte_cold
+txgbe_dev_tx_init(struct rte_eth_dev *dev)
+{
+ struct txgbe_hw *hw;
+ struct txgbe_tx_queue *txq;
+ uint64_t bus_addr;
+ uint16_t i;
+
+ PMD_INIT_FUNC_TRACE();
+ hw = TXGBE_DEV_HW(dev);
+
+ /* Setup the Base and Length of the Tx Descriptor Rings */
+ for (i = 0; i < dev->data->nb_tx_queues; i++) {
+ txq = dev->data->tx_queues[i];
+
+ bus_addr = txq->tx_ring_phys_addr;
+ wr32(hw, TXGBE_TXBAL(txq->reg_idx),
+ (uint32_t)(bus_addr & BIT_MASK32));
+ wr32(hw, TXGBE_TXBAH(txq->reg_idx),
+ (uint32_t)(bus_addr >> 32));
+ wr32m(hw, TXGBE_TXCFG(txq->reg_idx), TXGBE_TXCFG_BUFLEN_MASK,
+ TXGBE_TXCFG_BUFLEN(txq->nb_tx_desc));
+ /* Setup the HW Tx Head and TX Tail descriptor pointers */
+ wr32(hw, TXGBE_TXRP(txq->reg_idx), 0);
+ wr32(hw, TXGBE_TXWP(txq->reg_idx), 0);
+ }
+}
+
git.droids-corp.org / dpdk.git / commitdiff