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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2017 Intel Corporation
*/
#ifndef _AVF_RXTX_H_
#define _AVF_RXTX_H_
/* In QLEN must be whole number of 32 descriptors. */
#define AVF_ALIGN_RING_DESC 32
#define AVF_MIN_RING_DESC 64
#define AVF_MAX_RING_DESC 4096
#define AVF_DMA_MEM_ALIGN 4096
/* Base address of the HW descriptor ring should be 128B aligned. */
#define AVF_RING_BASE_ALIGN 128
/* used for Rx Bulk Allocate */
#define AVF_RX_MAX_BURST 32
/* used for Vector PMD */
#define AVF_VPMD_RX_MAX_BURST 32
#define AVF_VPMD_TX_MAX_BURST 32
#define AVF_VPMD_DESCS_PER_LOOP 4
#define AVF_VPMD_TX_MAX_FREE_BUF 64
#define AVF_NO_VECTOR_FLAGS ( \
DEV_TX_OFFLOAD_MULTI_SEGS | \
DEV_TX_OFFLOAD_VLAN_INSERT | \
DEV_TX_OFFLOAD_SCTP_CKSUM | \
DEV_TX_OFFLOAD_UDP_CKSUM | \
DEV_TX_OFFLOAD_TCP_CKSUM)
#define DEFAULT_TX_RS_THRESH 32
#define DEFAULT_TX_FREE_THRESH 32
#define AVF_MIN_TSO_MSS 256
#define AVF_MAX_TSO_MSS 9668
#define AVF_TSO_MAX_SEG UINT8_MAX
#define AVF_TX_MAX_MTU_SEG 8
#define AVF_TX_CKSUM_OFFLOAD_MASK ( \
PKT_TX_IP_CKSUM | \
PKT_TX_L4_MASK | \
PKT_TX_TCP_SEG)
#define AVF_TX_OFFLOAD_MASK ( \
PKT_TX_VLAN_PKT | \
PKT_TX_IP_CKSUM | \
PKT_TX_L4_MASK | \
PKT_TX_TCP_SEG)
#define AVF_TX_OFFLOAD_NOTSUP_MASK \
(PKT_TX_OFFLOAD_MASK ^ AVF_TX_OFFLOAD_MASK)
/* HW desc structure, both 16-byte and 32-byte types are supported */
#ifdef RTE_LIBRTE_AVF_16BYTE_RX_DESC
#define avf_rx_desc avf_16byte_rx_desc
#else
#define avf_rx_desc avf_32byte_rx_desc
#endif
struct avf_rxq_ops {
void (*release_mbufs)(struct avf_rx_queue *rxq);
};
struct avf_txq_ops {
void (*release_mbufs)(struct avf_tx_queue *txq);
};
/* Structure associated with each Rx queue. */
struct avf_rx_queue {
struct rte_mempool *mp; /* mbuf pool to populate Rx ring */
const struct rte_memzone *mz; /* memzone for Rx ring */
volatile union avf_rx_desc *rx_ring; /* Rx ring virtual address */
uint64_t rx_ring_phys_addr; /* Rx ring DMA address */
struct rte_mbuf **sw_ring; /* address of SW ring */
uint16_t nb_rx_desc; /* ring length */
uint16_t rx_tail; /* current value of tail */
volatile uint8_t *qrx_tail; /* register address of tail */
uint16_t rx_free_thresh; /* max free RX desc to hold */
uint16_t nb_rx_hold; /* number of held free RX desc */
struct rte_mbuf *pkt_first_seg; /* first segment of current packet */
struct rte_mbuf *pkt_last_seg; /* last segment of current packet */
struct rte_mbuf fake_mbuf; /* dummy mbuf */
/* used for VPMD */
uint16_t rxrearm_nb; /* number of remaining to be re-armed */
uint16_t rxrearm_start; /* the idx we start the re-arming from */
uint64_t mbuf_initializer; /* value to init mbufs */
/* for rx bulk */
uint16_t rx_nb_avail; /* number of staged packets ready */
uint16_t rx_next_avail; /* index of next staged packets */
uint16_t rx_free_trigger; /* triggers rx buffer allocation */
struct rte_mbuf *rx_stage[AVF_RX_MAX_BURST * 2]; /* store mbuf */
uint16_t port_id; /* device port ID */
uint8_t crc_len; /* 0 if CRC stripped, 4 otherwise */
uint16_t queue_id; /* Rx queue index */
uint16_t rx_buf_len; /* The packet buffer size */
uint16_t rx_hdr_len; /* The header buffer size */
uint16_t max_pkt_len; /* Maximum packet length */
bool q_set; /* if rx queue has been configured */
bool rx_deferred_start; /* don't start this queue in dev start */
const struct avf_rxq_ops *ops;
};
struct avf_tx_entry {
struct rte_mbuf *mbuf;
uint16_t next_id;
uint16_t last_id;
};
/* Structure associated with each TX queue. */
struct avf_tx_queue {
const struct rte_memzone *mz; /* memzone for Tx ring */
volatile struct avf_tx_desc *tx_ring; /* Tx ring virtual address */
uint64_t tx_ring_phys_addr; /* Tx ring DMA address */
struct avf_tx_entry *sw_ring; /* address array of SW ring */
uint16_t nb_tx_desc; /* ring length */
uint16_t tx_tail; /* current value of tail */
volatile uint8_t *qtx_tail; /* register address of tail */
/* number of used desc since RS bit set */
uint16_t nb_used;
uint16_t nb_free;
uint16_t last_desc_cleaned; /* last desc have been cleaned*/
uint16_t free_thresh;
uint16_t rs_thresh;
uint16_t port_id;
uint16_t queue_id;
uint64_t offloads;
uint16_t next_dd; /* next to set RS, for VPMD */
uint16_t next_rs; /* next to check DD, for VPMD */
bool q_set; /* if rx queue has been configured */
bool tx_deferred_start; /* don't start this queue in dev start */
const struct avf_txq_ops *ops;
};
/* Offload features */
union avf_tx_offload {
uint64_t data;
struct {
uint64_t l2_len:7; /* L2 (MAC) Header Length. */
uint64_t l3_len:9; /* L3 (IP) Header Length. */
uint64_t l4_len:8; /* L4 Header Length. */
uint64_t tso_segsz:16; /* TCP TSO segment size */
/* uint64_t unused : 24; */
};
};
int avf_dev_rx_queue_setup(struct rte_eth_dev *dev,
uint16_t queue_idx,
uint16_t nb_desc,
unsigned int socket_id,
const struct rte_eth_rxconf *rx_conf,
struct rte_mempool *mp);
int avf_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id);
int avf_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id);
void avf_dev_rx_queue_release(void *rxq);
int avf_dev_tx_queue_setup(struct rte_eth_dev *dev,
uint16_t queue_idx,
uint16_t nb_desc,
unsigned int socket_id,
const struct rte_eth_txconf *tx_conf);
int avf_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id);
int avf_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id);
void avf_dev_tx_queue_release(void *txq);
void avf_stop_queues(struct rte_eth_dev *dev);
uint16_t avf_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
uint16_t avf_recv_scattered_pkts(void *rx_queue,
struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
uint16_t avf_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
uint16_t avf_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
void avf_set_rx_function(struct rte_eth_dev *dev);
void avf_set_tx_function(struct rte_eth_dev *dev);
void avf_dev_rxq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
struct rte_eth_rxq_info *qinfo);
void avf_dev_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
struct rte_eth_txq_info *qinfo);
uint32_t avf_dev_rxq_count(struct rte_eth_dev *dev, uint16_t queue_id);
int avf_dev_rx_desc_status(void *rx_queue, uint16_t offset);
int avf_dev_tx_desc_status(void *tx_queue, uint16_t offset);
uint16_t avf_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
uint16_t avf_recv_scattered_pkts_vec(void *rx_queue,
struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
uint16_t avf_xmit_fixed_burst_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
int avf_rxq_vec_setup(struct avf_rx_queue *rxq);
int avf_txq_vec_setup(struct avf_tx_queue *txq);
static inline
void avf_dump_rx_descriptor(struct avf_rx_queue *rxq,
const volatile void *desc,
uint16_t rx_id)
{
#ifdef RTE_LIBRTE_AVF_16BYTE_RX_DESC
const volatile union avf_16byte_rx_desc *rx_desc = desc;
printf("Queue %d Rx_desc %d: QW0: 0x%016"PRIx64" QW1: 0x%016"PRIx64"\n",
rxq->queue_id, rx_id, rx_desc->read.pkt_addr,
rx_desc->read.hdr_addr);
#else
const volatile union avf_32byte_rx_desc *rx_desc = desc;
printf("Queue %d Rx_desc %d: QW0: 0x%016"PRIx64" QW1: 0x%016"PRIx64
" QW2: 0x%016"PRIx64" QW3: 0x%016"PRIx64"\n", rxq->queue_id,
rx_id, rx_desc->read.pkt_addr, rx_desc->read.hdr_addr,
rx_desc->read.rsvd1, rx_desc->read.rsvd2);
#endif
}
/* All the descriptors are 16 bytes, so just use one of them
* to print the qwords
*/
static inline
void avf_dump_tx_descriptor(const struct avf_tx_queue *txq,
const volatile void *desc, uint16_t tx_id)
{
const char *name;
const volatile struct avf_tx_desc *tx_desc = desc;
enum avf_tx_desc_dtype_value type;
type = (enum avf_tx_desc_dtype_value)rte_le_to_cpu_64(
tx_desc->cmd_type_offset_bsz &
rte_cpu_to_le_64(AVF_TXD_QW1_DTYPE_MASK));
switch (type) {
case AVF_TX_DESC_DTYPE_DATA:
name = "Tx_data_desc";
break;
case AVF_TX_DESC_DTYPE_CONTEXT:
name = "Tx_context_desc";
break;
default:
name = "unknown_desc";
break;
}
printf("Queue %d %s %d: QW0: 0x%016"PRIx64" QW1: 0x%016"PRIx64"\n",
txq->queue_id, name, tx_id, tx_desc->buffer_addr,
tx_desc->cmd_type_offset_bsz);
}
#ifdef DEBUG_DUMP_DESC
#define AVF_DUMP_RX_DESC(rxq, desc, rx_id) \
avf_dump_rx_descriptor(rxq, desc, rx_id)
#define AVF_DUMP_TX_DESC(txq, desc, tx_id) \
avf_dump_tx_descriptor(txq, desc, tx_id)
#else
#define AVF_DUMP_RX_DESC(rxq, desc, rx_id) do { } while (0)
#define AVF_DUMP_TX_DESC(txq, desc, tx_id) do { } while (0)
#endif
#endif /* _AVF_RXTX_H_ */
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