/* SPDX-License-Identifier: GPL-2.0-only */ /**************************************************************************** * Driver for Solarflare network controllers and boards * Copyright 2005-2006 Fen Systems Ltd. * Copyright 2006-2013 Solarflare Communications Inc. */ #ifndef EF4_EFX_H #define EF4_EFX_H #include "net_driver.h" #include "filter.h" /* All controllers use BAR 0 for I/O space and BAR 2(&3) for memory */ /* All VFs use BAR 0/1 for memory */ #define EF4_MEM_BAR … #define EF4_MEM_VF_BAR … int ef4_net_open(struct net_device *net_dev); int ef4_net_stop(struct net_device *net_dev); /* TX */ int ef4_probe_tx_queue(struct ef4_tx_queue *tx_queue); void ef4_remove_tx_queue(struct ef4_tx_queue *tx_queue); void ef4_init_tx_queue(struct ef4_tx_queue *tx_queue); void ef4_init_tx_queue_core_txq(struct ef4_tx_queue *tx_queue); void ef4_fini_tx_queue(struct ef4_tx_queue *tx_queue); netdev_tx_t ef4_hard_start_xmit(struct sk_buff *skb, struct net_device *net_dev); netdev_tx_t ef4_enqueue_skb(struct ef4_tx_queue *tx_queue, struct sk_buff *skb); void ef4_xmit_done(struct ef4_tx_queue *tx_queue, unsigned int index); int ef4_setup_tc(struct net_device *net_dev, enum tc_setup_type type, void *type_data); unsigned int ef4_tx_max_skb_descs(struct ef4_nic *efx); extern bool ef4_separate_tx_channels; /* RX */ void ef4_set_default_rx_indir_table(struct ef4_nic *efx); void ef4_rx_config_page_split(struct ef4_nic *efx); int ef4_probe_rx_queue(struct ef4_rx_queue *rx_queue); void ef4_remove_rx_queue(struct ef4_rx_queue *rx_queue); void ef4_init_rx_queue(struct ef4_rx_queue *rx_queue); void ef4_fini_rx_queue(struct ef4_rx_queue *rx_queue); void ef4_fast_push_rx_descriptors(struct ef4_rx_queue *rx_queue, bool atomic); void ef4_rx_slow_fill(struct timer_list *t); void __ef4_rx_packet(struct ef4_channel *channel); void ef4_rx_packet(struct ef4_rx_queue *rx_queue, unsigned int index, unsigned int n_frags, unsigned int len, u16 flags); static inline void ef4_rx_flush_packet(struct ef4_channel *channel) { … } void ef4_schedule_slow_fill(struct ef4_rx_queue *rx_queue); #define EF4_MAX_DMAQ_SIZE … #define EF4_DEFAULT_DMAQ_SIZE … #define EF4_MIN_DMAQ_SIZE … #define EF4_MAX_EVQ_SIZE … #define EF4_MIN_EVQ_SIZE … /* Maximum number of TCP segments we support for soft-TSO */ #define EF4_TSO_MAX_SEGS … /* The smallest [rt]xq_entries that the driver supports. RX minimum * is a bit arbitrary. For TX, we must have space for at least 2 * TSO skbs. */ #define EF4_RXQ_MIN_ENT … #define EF4_TXQ_MIN_ENT(efx) … static inline bool ef4_rss_enabled(struct ef4_nic *efx) { … } /* Filters */ void ef4_mac_reconfigure(struct ef4_nic *efx); /** * ef4_filter_insert_filter - add or replace a filter * @efx: NIC in which to insert the filter * @spec: Specification for the filter * @replace_equal: Flag for whether the specified filter may replace an * existing filter with equal priority * * On success, return the filter ID. * On failure, return a negative error code. * * If existing filters have equal match values to the new filter spec, * then the new filter might replace them or the function might fail, * as follows. * * 1. If the existing filters have lower priority, or @replace_equal * is set and they have equal priority, replace them. * * 2. If the existing filters have higher priority, return -%EPERM. * * 3. If !ef4_filter_is_mc_recipient(@spec), or the NIC does not * support delivery to multiple recipients, return -%EEXIST. * * This implies that filters for multiple multicast recipients must * all be inserted with the same priority and @replace_equal = %false. */ static inline s32 ef4_filter_insert_filter(struct ef4_nic *efx, struct ef4_filter_spec *spec, bool replace_equal) { … } /** * ef4_filter_remove_id_safe - remove a filter by ID, carefully * @efx: NIC from which to remove the filter * @priority: Priority of filter, as passed to @ef4_filter_insert_filter * @filter_id: ID of filter, as returned by @ef4_filter_insert_filter * * This function will range-check @filter_id, so it is safe to call * with a value passed from userland. */ static inline int ef4_filter_remove_id_safe(struct ef4_nic *efx, enum ef4_filter_priority priority, u32 filter_id) { … } /** * ef4_filter_get_filter_safe - retrieve a filter by ID, carefully * @efx: NIC from which to remove the filter * @priority: Priority of filter, as passed to @ef4_filter_insert_filter * @filter_id: ID of filter, as returned by @ef4_filter_insert_filter * @spec: Buffer in which to store filter specification * * This function will range-check @filter_id, so it is safe to call * with a value passed from userland. */ static inline int ef4_filter_get_filter_safe(struct ef4_nic *efx, enum ef4_filter_priority priority, u32 filter_id, struct ef4_filter_spec *spec) { … } static inline u32 ef4_filter_count_rx_used(struct ef4_nic *efx, enum ef4_filter_priority priority) { … } static inline u32 ef4_filter_get_rx_id_limit(struct ef4_nic *efx) { … } static inline s32 ef4_filter_get_rx_ids(struct ef4_nic *efx, enum ef4_filter_priority priority, u32 *buf, u32 size) { … } #ifdef CONFIG_RFS_ACCEL int ef4_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, u16 rxq_index, u32 flow_id); bool __ef4_filter_rfs_expire(struct ef4_nic *efx, unsigned quota); static inline void ef4_filter_rfs_expire(struct ef4_channel *channel) { … } #define ef4_filter_rfs_enabled() … #else static inline void ef4_filter_rfs_expire(struct ef4_channel *channel) {} #define ef4_filter_rfs_enabled … #endif bool ef4_filter_is_mc_recipient(const struct ef4_filter_spec *spec); /* Channels */ int ef4_channel_dummy_op_int(struct ef4_channel *channel); void ef4_channel_dummy_op_void(struct ef4_channel *channel); int ef4_realloc_channels(struct ef4_nic *efx, u32 rxq_entries, u32 txq_entries); /* Ports */ int ef4_reconfigure_port(struct ef4_nic *efx); int __ef4_reconfigure_port(struct ef4_nic *efx); /* Ethtool support */ extern const struct ethtool_ops ef4_ethtool_ops; /* Reset handling */ int ef4_reset(struct ef4_nic *efx, enum reset_type method); void ef4_reset_down(struct ef4_nic *efx, enum reset_type method); int ef4_reset_up(struct ef4_nic *efx, enum reset_type method, bool ok); int ef4_try_recovery(struct ef4_nic *efx); /* Global */ void ef4_schedule_reset(struct ef4_nic *efx, enum reset_type type); unsigned int ef4_usecs_to_ticks(struct ef4_nic *efx, unsigned int usecs); unsigned int ef4_ticks_to_usecs(struct ef4_nic *efx, unsigned int ticks); int ef4_init_irq_moderation(struct ef4_nic *efx, unsigned int tx_usecs, unsigned int rx_usecs, bool rx_adaptive, bool rx_may_override_tx); void ef4_get_irq_moderation(struct ef4_nic *efx, unsigned int *tx_usecs, unsigned int *rx_usecs, bool *rx_adaptive); void ef4_stop_eventq(struct ef4_channel *channel); void ef4_start_eventq(struct ef4_channel *channel); /* Dummy PHY ops for PHY drivers */ int ef4_port_dummy_op_int(struct ef4_nic *efx); void ef4_port_dummy_op_void(struct ef4_nic *efx); /* Update the generic software stats in the passed stats array */ void ef4_update_sw_stats(struct ef4_nic *efx, u64 *stats); /* MTD */ #ifdef CONFIG_SFC_FALCON_MTD int ef4_mtd_add(struct ef4_nic *efx, struct ef4_mtd_partition *parts, size_t n_parts, size_t sizeof_part); static inline int ef4_mtd_probe(struct ef4_nic *efx) { … } void ef4_mtd_rename(struct ef4_nic *efx); void ef4_mtd_remove(struct ef4_nic *efx); #else static inline int ef4_mtd_probe(struct ef4_nic *efx) { return 0; } static inline void ef4_mtd_rename(struct ef4_nic *efx) {} static inline void ef4_mtd_remove(struct ef4_nic *efx) {} #endif static inline void ef4_schedule_channel(struct ef4_channel *channel) { … } static inline void ef4_schedule_channel_irq(struct ef4_channel *channel) { … } void ef4_link_status_changed(struct ef4_nic *efx); void ef4_link_set_advertising(struct ef4_nic *efx, u32); void ef4_link_set_wanted_fc(struct ef4_nic *efx, u8); static inline void ef4_device_detach_sync(struct ef4_nic *efx) { … } static inline bool ef4_rwsem_assert_write_locked(struct rw_semaphore *sem) { … } #endif /* EF4_EFX_H */
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