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 */ 21 extern int efx_probe_tx_queue(struct efx_tx_queue *tx_queue); 22 extern void efx_remove_tx_queue(struct efx_tx_queue *tx_queue); 23 extern void efx_init_tx_queue(struct efx_tx_queue *tx_queue); 24 extern void efx_init_tx_queue_core_txq(struct efx_tx_queue *tx_queue); 25 extern void efx_fini_tx_queue(struct efx_tx_queue *tx_queue); 26 extern void efx_release_tx_buffers(struct efx_tx_queue *tx_queue); 27 extern netdev_tx_t 28 efx_hard_start_xmit(struct sk_buff *skb, struct net_device *net_dev); 29 extern netdev_tx_t 30 efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb); 31 extern void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index); 32 extern int efx_setup_tc(struct net_device *net_dev, u8 num_tc); 33 extern unsigned int efx_tx_max_skb_descs(struct efx_nic *efx); 34 35 /* RX */ 36 extern int efx_probe_rx_queue(struct efx_rx_queue *rx_queue); 37 extern void efx_remove_rx_queue(struct efx_rx_queue *rx_queue); 38 extern void efx_init_rx_queue(struct efx_rx_queue *rx_queue); 39 extern void efx_fini_rx_queue(struct efx_rx_queue *rx_queue); 40 extern void efx_rx_strategy(struct efx_channel *channel); 41 extern void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue); 42 extern void efx_rx_slow_fill(unsigned long context); 43 extern void __efx_rx_packet(struct efx_channel *channel, 44 struct efx_rx_buffer *rx_buf); 45 extern void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index, 46 unsigned int len, u16 flags); 47 extern void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue); 48 49 #define EFX_MAX_DMAQ_SIZE 4096UL 50 #define EFX_DEFAULT_DMAQ_SIZE 1024UL 51 #define EFX_MIN_DMAQ_SIZE 512UL 52 53 #define EFX_MAX_EVQ_SIZE 16384UL 54 #define EFX_MIN_EVQ_SIZE 512UL 55 56 /* Maximum number of TCP segments we support for soft-TSO */ 57 #define EFX_TSO_MAX_SEGS 100 58 59 /* The smallest [rt]xq_entries that the driver supports. RX minimum 60 * is a bit arbitrary. For TX, we must have space for at least 2 61 * TSO skbs. 62 */ 63 #define EFX_RXQ_MIN_ENT 128U 64 #define EFX_TXQ_MIN_ENT(efx) (2 * efx_tx_max_skb_descs(efx)) 65 66 /* Filters */ 67 extern int efx_probe_filters(struct efx_nic *efx); 68 extern void efx_restore_filters(struct efx_nic *efx); 69 extern void efx_remove_filters(struct efx_nic *efx); 70 extern s32 efx_filter_insert_filter(struct efx_nic *efx, 71 struct efx_filter_spec *spec, 72 bool replace); 73 extern int efx_filter_remove_id_safe(struct efx_nic *efx, 74 enum efx_filter_priority priority, 75 u32 filter_id); 76 extern int efx_filter_get_filter_safe(struct efx_nic *efx, 77 enum efx_filter_priority priority, 78 u32 filter_id, struct efx_filter_spec *); 79 extern void efx_filter_clear_rx(struct efx_nic *efx, 80 enum efx_filter_priority priority); 81 extern u32 efx_filter_count_rx_used(struct efx_nic *efx, 82 enum efx_filter_priority priority); 83 extern u32 efx_filter_get_rx_id_limit(struct efx_nic *efx); 84 extern s32 efx_filter_get_rx_ids(struct efx_nic *efx, 85 enum efx_filter_priority priority, 86 u32 *buf, u32 size); 87 #ifdef CONFIG_RFS_ACCEL 88 extern int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, 89 u16 rxq_index, u32 flow_id); 90 extern bool __efx_filter_rfs_expire(struct efx_nic *efx, unsigned quota); 91 static inline void efx_filter_rfs_expire(struct efx_channel *channel) 92 { 93 if (channel->rfs_filters_added >= 60 && 94 __efx_filter_rfs_expire(channel->efx, 100)) 95 channel->rfs_filters_added -= 60; 96 } 97 #define efx_filter_rfs_enabled() 1 98 #else 99 static inline void efx_filter_rfs_expire(struct efx_channel *channel) {} 100 #define efx_filter_rfs_enabled() 0 101 #endif 102 103 /* Channels */ 104 extern int efx_channel_dummy_op_int(struct efx_channel *channel); 105 extern void efx_process_channel_now(struct efx_channel *channel); 106 extern int 107 efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries); 108 109 /* Ports */ 110 extern int efx_reconfigure_port(struct efx_nic *efx); 111 extern int __efx_reconfigure_port(struct efx_nic *efx); 112 113 /* Ethtool support */ 114 extern const struct ethtool_ops efx_ethtool_ops; 115 116 /* Reset handling */ 117 extern int efx_reset(struct efx_nic *efx, enum reset_type method); 118 extern void efx_reset_down(struct efx_nic *efx, enum reset_type method); 119 extern int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok); 120 121 /* Global */ 122 extern void efx_schedule_reset(struct efx_nic *efx, enum reset_type type); 123 extern int efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs, 124 unsigned int rx_usecs, bool rx_adaptive, 125 bool rx_may_override_tx); 126 extern void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs, 127 unsigned int *rx_usecs, bool *rx_adaptive); 128 129 /* Dummy PHY ops for PHY drivers */ 130 extern int efx_port_dummy_op_int(struct efx_nic *efx); 131 extern void efx_port_dummy_op_void(struct efx_nic *efx); 132 133 134 /* MTD */ 135 #ifdef CONFIG_SFC_MTD 136 extern int efx_mtd_probe(struct efx_nic *efx); 137 extern void efx_mtd_rename(struct efx_nic *efx); 138 extern void efx_mtd_remove(struct efx_nic *efx); 139 #else 140 static inline int efx_mtd_probe(struct efx_nic *efx) { return 0; } 141 static inline void efx_mtd_rename(struct efx_nic *efx) {} 142 static inline void efx_mtd_remove(struct efx_nic *efx) {} 143 #endif 144 145 static inline void efx_schedule_channel(struct efx_channel *channel) 146 { 147 netif_vdbg(channel->efx, intr, channel->efx->net_dev, 148 "channel %d scheduling NAPI poll on CPU%d\n", 149 channel->channel, raw_smp_processor_id()); 150 channel->work_pending = true; 151 152 napi_schedule(&channel->napi_str); 153 } 154 155 static inline void efx_schedule_channel_irq(struct efx_channel *channel) 156 { 157 channel->event_test_cpu = raw_smp_processor_id(); 158 efx_schedule_channel(channel); 159 } 160 161 extern void efx_link_status_changed(struct efx_nic *efx); 162 extern void efx_link_set_advertising(struct efx_nic *efx, u32); 163 extern void efx_link_set_wanted_fc(struct efx_nic *efx, u8); 164 165 #endif /* EFX_EFX_H */ 166