1/**************************************************************************** 2 * Driver for Solarflare Solarstorm network controllers and boards 3 * Copyright 2005-2006 Fen Systems Ltd. 4 * Copyright 2006-2010 Solarflare Communications Inc. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 as published 8 * by the Free Software Foundation, incorporated herein by reference. 9 */ 10 11#ifndef EFX_EFX_H 12#define EFX_EFX_H 13 14#include "net_driver.h" 15#include "filter.h" 16 17/* Solarstorm controllers use BAR 0 for I/O space and BAR 2(&3) for memory */ 18#define EFX_MEM_BAR 2 19 20/* TX */ 21extern int efx_probe_tx_queue(struct efx_tx_queue *tx_queue); 22extern void efx_remove_tx_queue(struct efx_tx_queue *tx_queue); 23extern void efx_init_tx_queue(struct efx_tx_queue *tx_queue); 24extern void efx_init_tx_queue_core_txq(struct efx_tx_queue *tx_queue); 25extern void efx_fini_tx_queue(struct efx_tx_queue *tx_queue); 26extern void efx_release_tx_buffers(struct efx_tx_queue *tx_queue); 27extern netdev_tx_t 28efx_hard_start_xmit(struct sk_buff *skb, struct net_device *net_dev); 29extern netdev_tx_t 30efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb); 31extern void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index); 32extern int efx_setup_tc(struct net_device *net_dev, u8 num_tc); 33 34/* RX */ 35extern int efx_probe_rx_queue(struct efx_rx_queue *rx_queue); 36extern void efx_remove_rx_queue(struct efx_rx_queue *rx_queue); 37extern void efx_init_rx_queue(struct efx_rx_queue *rx_queue); 38extern void efx_fini_rx_queue(struct efx_rx_queue *rx_queue); 39extern void efx_rx_strategy(struct efx_channel *channel); 40extern void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue); 41extern void efx_rx_slow_fill(unsigned long context); 42extern void __efx_rx_packet(struct efx_channel *channel, 43 struct efx_rx_buffer *rx_buf, bool checksummed); 44extern void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index, 45 unsigned int len, bool checksummed, bool discard); 46extern void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue); 47 48#define EFX_MAX_DMAQ_SIZE 4096UL 49#define EFX_DEFAULT_DMAQ_SIZE 1024UL 50#define EFX_MIN_DMAQ_SIZE 512UL 51 52#define EFX_MAX_EVQ_SIZE 16384UL 53#define EFX_MIN_EVQ_SIZE 512UL 54 55/* The smallest [rt]xq_entries that the driver supports. Callers of 56 * efx_wake_queue() assume that they can subsequently send at least one 57 * skb. Falcon/A1 may require up to three descriptors per skb_frag. */ 58#define EFX_MIN_RING_SIZE (roundup_pow_of_two(2 * 3 * MAX_SKB_FRAGS)) 59 60/* Filters */ 61extern int efx_probe_filters(struct efx_nic *efx); 62extern void efx_restore_filters(struct efx_nic *efx); 63extern void efx_remove_filters(struct efx_nic *efx); 64extern s32 efx_filter_insert_filter(struct efx_nic *efx, 65 struct efx_filter_spec *spec, 66 bool replace); 67extern int efx_filter_remove_id_safe(struct efx_nic *efx, 68 enum efx_filter_priority priority, 69 u32 filter_id); 70extern int efx_filter_get_filter_safe(struct efx_nic *efx, 71 enum efx_filter_priority priority, 72 u32 filter_id, struct efx_filter_spec *); 73extern void efx_filter_clear_rx(struct efx_nic *efx, 74 enum efx_filter_priority priority); 75extern u32 efx_filter_count_rx_used(struct efx_nic *efx, 76 enum efx_filter_priority priority); 77extern u32 efx_filter_get_rx_id_limit(struct efx_nic *efx); 78extern s32 efx_filter_get_rx_ids(struct efx_nic *efx, 79 enum efx_filter_priority priority, 80 u32 *buf, u32 size); 81#ifdef CONFIG_RFS_ACCEL 82extern int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, 83 u16 rxq_index, u32 flow_id); 84extern bool __efx_filter_rfs_expire(struct efx_nic *efx, unsigned quota); 85static inline void efx_filter_rfs_expire(struct efx_channel *channel) 86{ 87 if (channel->rfs_filters_added >= 60 && 88 __efx_filter_rfs_expire(channel->efx, 100)) 89 channel->rfs_filters_added -= 60; 90} 91#define efx_filter_rfs_enabled() 1 92#else 93static inline void efx_filter_rfs_expire(struct efx_channel *channel) {} 94#define efx_filter_rfs_enabled() 0 95#endif 96 97/* Channels */ 98extern void efx_process_channel_now(struct efx_channel *channel); 99extern int 100efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries); 101 102/* Ports */ 103extern int efx_reconfigure_port(struct efx_nic *efx); 104extern int __efx_reconfigure_port(struct efx_nic *efx); 105 106/* Ethtool support */ 107extern const struct ethtool_ops efx_ethtool_ops; 108 109/* Reset handling */ 110extern int efx_reset(struct efx_nic *efx, enum reset_type method); 111extern void efx_reset_down(struct efx_nic *efx, enum reset_type method); 112extern int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok); 113 114/* Global */ 115extern void efx_schedule_reset(struct efx_nic *efx, enum reset_type type); 116extern int efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs, 117 unsigned int rx_usecs, bool rx_adaptive, 118 bool rx_may_override_tx); 119extern void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs, 120 unsigned int *rx_usecs, bool *rx_adaptive); 121 122/* Dummy PHY ops for PHY drivers */ 123extern int efx_port_dummy_op_int(struct efx_nic *efx); 124extern void efx_port_dummy_op_void(struct efx_nic *efx); 125 126 127/* MTD */ 128#ifdef CONFIG_SFC_MTD 129extern int efx_mtd_probe(struct efx_nic *efx); 130extern void efx_mtd_rename(struct efx_nic *efx); 131extern void efx_mtd_remove(struct efx_nic *efx); 132#else 133static inline int efx_mtd_probe(struct efx_nic *efx) { return 0; } 134static inline void efx_mtd_rename(struct efx_nic *efx) {} 135static inline void efx_mtd_remove(struct efx_nic *efx) {} 136#endif 137 138static inline void efx_schedule_channel(struct efx_channel *channel) 139{ 140 netif_vdbg(channel->efx, intr, channel->efx->net_dev, 141 "channel %d scheduling NAPI poll on CPU%d\n", 142 channel->channel, raw_smp_processor_id()); 143 channel->work_pending = true; 144 145 napi_schedule(&channel->napi_str); 146} 147 148extern void efx_link_status_changed(struct efx_nic *efx); 149extern void efx_link_set_advertising(struct efx_nic *efx, u32); 150extern void efx_link_set_wanted_fc(struct efx_nic *efx, u8); 151 152#endif /* EFX_EFX_H */ 153