/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ /* * Copyright 2015-2020 Amazon.com, Inc. or its affiliates. All rights reserved. */ #ifndef ENA_H #define ENA_H #include <linux/bitops.h> #include <linux/dim.h> #include <linux/etherdevice.h> #include <linux/if_vlan.h> #include <linux/inetdevice.h> #include <linux/interrupt.h> #include <linux/netdevice.h> #include <linux/skbuff.h> #include <net/xdp.h> #include <uapi/linux/bpf.h> #include "ena_com.h" #include "ena_eth_com.h" #define DRV_MODULE_GEN_MAJOR … #define DRV_MODULE_GEN_MINOR … #define DRV_MODULE_GEN_SUBMINOR … #define DRV_MODULE_NAME … #define DEVICE_NAME … /* 1 for AENQ + ADMIN */ #define ENA_ADMIN_MSIX_VEC … #define ENA_MAX_MSIX_VEC(io_queues) … /* The ENA buffer length fields is 16 bit long. So when PAGE_SIZE == 64kB the * driver passes 0. * Since the max packet size the ENA handles is ~9kB limit the buffer length to * 16kB. */ #if PAGE_SIZE > SZ_16K #define ENA_PAGE_SIZE … #else #define ENA_PAGE_SIZE … #endif #define ENA_MIN_MSIX_VEC … #define ENA_REG_BAR … #define ENA_MEM_BAR … #define ENA_BAR_MASK … #define ENA_DEFAULT_RING_SIZE … #define ENA_MIN_RING_SIZE … #define ENA_MIN_RX_BUF_SIZE … #define ENA_MIN_NUM_IO_QUEUES … #define ENA_TX_WAKEUP_THRESH … #define ENA_DEFAULT_RX_COPYBREAK … #define ENA_MIN_MTU … #define ENA_NAME_MAX_LEN … #define ENA_IRQNAME_SIZE … #define ENA_PKT_MAX_BUFS … #define ENA_RX_RSS_TABLE_LOG_SIZE … #define ENA_RX_RSS_TABLE_SIZE … /* The number of tx packet completions that will be handled each NAPI poll * cycle is ring_size / ENA_TX_POLL_BUDGET_DIVIDER. */ #define ENA_TX_POLL_BUDGET_DIVIDER … /* Refill Rx queue when number of required descriptors is above * QUEUE_SIZE / ENA_RX_REFILL_THRESH_DIVIDER or ENA_RX_REFILL_THRESH_PACKET */ #define ENA_RX_REFILL_THRESH_DIVIDER … #define ENA_RX_REFILL_THRESH_PACKET … /* Number of queues to check for missing queues per timer service */ #define ENA_MONITORED_TX_QUEUES … /* Max timeout packets before device reset */ #define MAX_NUM_OF_TIMEOUTED_PACKETS … #define ENA_TX_RING_IDX_NEXT(idx, ring_size) … #define ENA_RX_RING_IDX_NEXT(idx, ring_size) … #define ENA_RX_RING_IDX_ADD(idx, n, ring_size) … #define ENA_IO_TXQ_IDX(q) … #define ENA_IO_RXQ_IDX(q) … #define ENA_IO_TXQ_IDX_TO_COMBINED_IDX(q) … #define ENA_IO_RXQ_IDX_TO_COMBINED_IDX(q) … #define ENA_MGMNT_IRQ_IDX … #define ENA_IO_IRQ_FIRST_IDX … #define ENA_IO_IRQ_IDX(q) … #define ENA_ADMIN_POLL_DELAY_US … /* ENA device should send keep alive msg every 1 sec. * We wait for 6 sec just to be on the safe side. */ #define ENA_DEVICE_KALIVE_TIMEOUT … #define ENA_MAX_NO_INTERRUPT_ITERATIONS … #define ENA_MMIO_DISABLE_REG_READ … struct ena_irq { … }; struct ena_napi { … }; struct ena_tx_buffer { … } ____cacheline_aligned; struct ena_rx_buffer { … } ____cacheline_aligned; struct ena_stats_tx { … }; struct ena_stats_rx { … }; struct ena_ring { … } ____cacheline_aligned; struct ena_stats_dev { … }; enum ena_flags_t { … }; /* adapter specific private data structure */ struct ena_adapter { … }; void ena_set_ethtool_ops(struct net_device *netdev); void ena_dump_stats_to_dmesg(struct ena_adapter *adapter); void ena_dump_stats_to_buf(struct ena_adapter *adapter, u8 *buf); int ena_update_hw_stats(struct ena_adapter *adapter); int ena_update_queue_params(struct ena_adapter *adapter, u32 new_tx_size, u32 new_rx_size, u32 new_llq_header_len); int ena_update_queue_count(struct ena_adapter *adapter, u32 new_channel_count); int ena_set_rx_copybreak(struct ena_adapter *adapter, u32 rx_copybreak); int ena_get_sset_count(struct net_device *netdev, int sset); static inline void ena_reset_device(struct ena_adapter *adapter, enum ena_regs_reset_reason_types reset_reason) { … } int handle_invalid_req_id(struct ena_ring *ring, u16 req_id, struct ena_tx_buffer *tx_info, bool is_xdp); /* Increase a stat by cnt while holding syncp seqlock on 32bit machines */ static inline void ena_increase_stat(u64 *statp, u64 cnt, struct u64_stats_sync *syncp) { … } static inline void ena_ring_tx_doorbell(struct ena_ring *tx_ring) { … } int ena_xmit_common(struct ena_adapter *adapter, struct ena_ring *ring, struct ena_tx_buffer *tx_info, struct ena_com_tx_ctx *ena_tx_ctx, u16 next_to_use, u32 bytes); void ena_unmap_tx_buff(struct ena_ring *tx_ring, struct ena_tx_buffer *tx_info); void ena_init_io_rings(struct ena_adapter *adapter, int first_index, int count); int ena_create_io_tx_queues_in_range(struct ena_adapter *adapter, int first_index, int count); int ena_setup_tx_resources_in_range(struct ena_adapter *adapter, int first_index, int count); void ena_free_all_io_tx_resources_in_range(struct ena_adapter *adapter, int first_index, int count); void ena_free_all_io_tx_resources(struct ena_adapter *adapter); void ena_down(struct ena_adapter *adapter); int ena_up(struct ena_adapter *adapter); void ena_unmask_interrupt(struct ena_ring *tx_ring, struct ena_ring *rx_ring); void ena_update_ring_numa_node(struct ena_ring *tx_ring, struct ena_ring *rx_ring); #endif /* !(ENA_H) */
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