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 34 /* RX */ 35 extern int efx_probe_rx_queue(struct efx_rx_queue *rx_queue); 36 extern void efx_remove_rx_queue(struct efx_rx_queue *rx_queue); 37 extern void efx_init_rx_queue(struct efx_rx_queue *rx_queue); 38 extern void efx_fini_rx_queue(struct efx_rx_queue *rx_queue); 39 extern void efx_rx_strategy(struct efx_channel *channel); 40 extern void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue); 41 extern void efx_rx_slow_fill(unsigned long context); 42 extern void __efx_rx_packet(struct efx_channel *channel, 43 struct efx_rx_buffer *rx_buf); 44 extern void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index, 45 unsigned int len, u16 flags); 46 extern 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 */ 61 extern int efx_probe_filters(struct efx_nic *efx); 62 extern void efx_restore_filters(struct efx_nic *efx); 63 extern void efx_remove_filters(struct efx_nic *efx); 64 extern s32 efx_filter_insert_filter(struct efx_nic *efx, 65 struct efx_filter_spec *spec, 66 bool replace); 67 extern int efx_filter_remove_id_safe(struct efx_nic *efx, 68 enum efx_filter_priority priority, 69 u32 filter_id); 70 extern int efx_filter_get_filter_safe(struct efx_nic *efx, 71 enum efx_filter_priority priority, 72 u32 filter_id, struct efx_filter_spec *); 73 extern void efx_filter_clear_rx(struct efx_nic *efx, 74 enum efx_filter_priority priority); 75 extern u32 efx_filter_count_rx_used(struct efx_nic *efx, 76 enum efx_filter_priority priority); 77 extern u32 efx_filter_get_rx_id_limit(struct efx_nic *efx); 78 extern 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 82 extern int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, 83 u16 rxq_index, u32 flow_id); 84 extern bool __efx_filter_rfs_expire(struct efx_nic *efx, unsigned quota); 85 static 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 93 static inline void efx_filter_rfs_expire(struct efx_channel *channel) {} 94 #define efx_filter_rfs_enabled() 0 95 #endif 96 97 /* Channels */ 98 extern int efx_channel_dummy_op_int(struct efx_channel *channel); 99 extern void efx_process_channel_now(struct efx_channel *channel); 100 extern int 101 efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries); 102 103 /* Ports */ 104 extern int efx_reconfigure_port(struct efx_nic *efx); 105 extern int __efx_reconfigure_port(struct efx_nic *efx); 106 107 /* Ethtool support */ 108 extern const struct ethtool_ops efx_ethtool_ops; 109 110 /* Reset handling */ 111 extern int efx_reset(struct efx_nic *efx, enum reset_type method); 112 extern void efx_reset_down(struct efx_nic *efx, enum reset_type method); 113 extern int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok); 114 115 /* Global */ 116 extern void efx_schedule_reset(struct efx_nic *efx, enum reset_type type); 117 extern int efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs, 118 unsigned int rx_usecs, bool rx_adaptive, 119 bool rx_may_override_tx); 120 extern void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs, 121 unsigned int *rx_usecs, bool *rx_adaptive); 122 123 /* Dummy PHY ops for PHY drivers */ 124 extern int efx_port_dummy_op_int(struct efx_nic *efx); 125 extern void efx_port_dummy_op_void(struct efx_nic *efx); 126 127 128 /* MTD */ 129 #ifdef CONFIG_SFC_MTD 130 extern int efx_mtd_probe(struct efx_nic *efx); 131 extern void efx_mtd_rename(struct efx_nic *efx); 132 extern void efx_mtd_remove(struct efx_nic *efx); 133 #else 134 static inline int efx_mtd_probe(struct efx_nic *efx) { return 0; } 135 static inline void efx_mtd_rename(struct efx_nic *efx) {} 136 static inline void efx_mtd_remove(struct efx_nic *efx) {} 137 #endif 138 139 static inline void efx_schedule_channel(struct efx_channel *channel) 140 { 141 netif_vdbg(channel->efx, intr, channel->efx->net_dev, 142 "channel %d scheduling NAPI poll on CPU%d\n", 143 channel->channel, raw_smp_processor_id()); 144 channel->work_pending = true; 145 146 napi_schedule(&channel->napi_str); 147 } 148 149 static inline void efx_schedule_channel_irq(struct efx_channel *channel) 150 { 151 channel->event_test_cpu = raw_smp_processor_id(); 152 efx_schedule_channel(channel); 153 } 154 155 extern void efx_link_status_changed(struct efx_nic *efx); 156 extern void efx_link_set_advertising(struct efx_nic *efx, u32); 157 extern void efx_link_set_wanted_fc(struct efx_nic *efx, u8); 158 159 #endif /* EFX_EFX_H */ 160