diff options
Diffstat (limited to 'drivers/net/axgbe/axgbe_rxtx.h')
| -rw-r--r-- | drivers/net/axgbe/axgbe_rxtx.h | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/drivers/net/axgbe/axgbe_rxtx.h b/drivers/net/axgbe/axgbe_rxtx.h new file mode 100644 index 00000000..917da58c --- /dev/null +++ b/drivers/net/axgbe/axgbe_rxtx.h @@ -0,0 +1,186 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 Advanced Micro Devices, Inc. All rights reserved. + * Copyright(c) 2018 Synopsys, Inc. All rights reserved. + */ + +#ifndef _AXGBE_RXTX_H_ +#define _AXGBE_RXTX_H_ + +/* to suppress gcc warnings related to descriptor casting*/ +#ifdef RTE_TOOLCHAIN_GCC +#pragma GCC diagnostic ignored "-Wcast-qual" +#endif + +#ifdef RTE_TOOLCHAIN_CLANG +#pragma GCC diagnostic ignored "-Wcast-qual" +#endif + +/* Descriptor related defines */ +#define AXGBE_MAX_RING_DESC 4096 /*should be power of 2*/ +#define AXGBE_TX_DESC_MIN_FREE (AXGBE_MAX_RING_DESC >> 3) +#define AXGBE_TX_DESC_MAX_PROC (AXGBE_MAX_RING_DESC >> 1) +#define AXGBE_MIN_RING_DESC 32 +#define RTE_AXGBE_DESCS_PER_LOOP 4 +#define RTE_AXGBE_MAX_RX_BURST 32 + +#define AXGBE_RX_FREE_THRESH 32 +#define AXGBE_TX_FREE_THRESH 32 + +#define AXGBE_DESC_ALIGN 128 +#define AXGBE_DESC_OWN 0x80000000 +#define AXGBE_ERR_STATUS 0x000f0000 +#define AXGBE_L3_CSUM_ERR 0x00050000 +#define AXGBE_L4_CSUM_ERR 0x00060000 + +#include "axgbe_common.h" + +#define AXGBE_GET_DESC_PT(_queue, _idx) \ + (((_queue)->desc) + \ + ((_idx) & ((_queue)->nb_desc - 1))) + +#define AXGBE_GET_DESC_IDX(_queue, _idx) \ + ((_idx) & ((_queue)->nb_desc - 1)) \ + +/* Rx desc format */ +union axgbe_rx_desc { + struct { + uint64_t baddr; + uint32_t desc2; + uint32_t desc3; + } read; + struct { + uint32_t desc0; + uint32_t desc1; + uint32_t desc2; + uint32_t desc3; + } write; +}; + +struct axgbe_rx_queue { + /* membuf pool for rx buffers */ + struct rte_mempool *mb_pool; + /* H/w Rx buffer size configured in DMA */ + unsigned int buf_size; + /* CRC h/w offload */ + uint16_t crc_len; + /* address of s/w rx buffers */ + struct rte_mbuf **sw_ring; + /* Port private data */ + struct axgbe_port *pdata; + /* Number of Rx descriptors in queue */ + uint16_t nb_desc; + /* max free RX desc to hold */ + uint16_t free_thresh; + /* Index of descriptor to check for packet availability */ + uint64_t cur; + /* Index of descriptor to check for buffer reallocation */ + uint64_t dirty; + /* Software Rx descriptor ring*/ + volatile union axgbe_rx_desc *desc; + /* Ring physical address */ + uint64_t ring_phys_addr; + /* Dma Channel register address */ + void *dma_regs; + /* Dma channel tail register address*/ + volatile uint32_t *dma_tail_reg; + /* DPDK queue index */ + uint16_t queue_id; + /* dpdk port id*/ + uint16_t port_id; + /* queue stats */ + uint64_t pkts; + uint64_t bytes; + uint64_t errors; + /* Number of mbufs allocated from pool*/ + uint64_t mbuf_alloc; + +} __rte_cache_aligned; + +/*Tx descriptor format */ +struct axgbe_tx_desc { + phys_addr_t baddr; + uint32_t desc2; + uint32_t desc3; +}; + +struct axgbe_tx_queue { + /* Port private data reference */ + struct axgbe_port *pdata; + /* Number of Tx descriptors in queue*/ + uint16_t nb_desc; + /* Start freeing TX buffers if there are less free descriptors than + * this value + */ + uint16_t free_thresh; + /* Available descriptors for Tx processing*/ + uint16_t nb_desc_free; + /* Batch of mbufs/descs to release */ + uint16_t free_batch_cnt; + /* Flag for vector support */ + uint16_t vector_disable; + /* Index of descriptor to be used for current transfer */ + uint64_t cur; + /* Index of descriptor to check for transfer complete */ + uint64_t dirty; + /* Virtual address of ring */ + volatile struct axgbe_tx_desc *desc; + /* Physical address of ring */ + uint64_t ring_phys_addr; + /* Dma channel register space */ + void *dma_regs; + /* Dma tail register address of ring*/ + volatile uint32_t *dma_tail_reg; + /* Tx queue index/id*/ + uint16_t queue_id; + /* Reference to hold Tx mbufs mapped to Tx descriptors freed + * after transmission confirmation + */ + struct rte_mbuf **sw_ring; + /* dpdk port id*/ + uint16_t port_id; + /* queue stats */ + uint64_t pkts; + uint64_t bytes; + uint64_t errors; + +} __rte_cache_aligned; + +/*Queue related APIs */ + +/* + * RX/TX function prototypes + */ + + +void axgbe_dev_tx_queue_release(void *txq); +int axgbe_dev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id, + uint16_t nb_tx_desc, unsigned int socket_id, + const struct rte_eth_txconf *tx_conf); +void axgbe_dev_enable_tx(struct rte_eth_dev *dev); +void axgbe_dev_disable_tx(struct rte_eth_dev *dev); +int axgbe_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id); +int axgbe_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id); + +uint16_t axgbe_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, + uint16_t nb_pkts); +uint16_t axgbe_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts, + uint16_t nb_pkts); + + +void axgbe_dev_rx_queue_release(void *rxq); +int axgbe_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id, + uint16_t nb_rx_desc, unsigned int socket_id, + const struct rte_eth_rxconf *rx_conf, + struct rte_mempool *mb_pool); +void axgbe_dev_enable_rx(struct rte_eth_dev *dev); +void axgbe_dev_disable_rx(struct rte_eth_dev *dev); +int axgbe_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id); +int axgbe_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id); +uint16_t axgbe_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts); +uint16_t axgbe_recv_pkts_threshold_refresh(void *rx_queue, + struct rte_mbuf **rx_pkts, + uint16_t nb_pkts); +void axgbe_dev_clear_queues(struct rte_eth_dev *dev); + +#endif /* _AXGBE_RXTX_H_ */ |