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 /* PCI IDs */ 18 #define BETHPAGE_A_P_DEVID 0x0803 19 #define SIENA_A_P_DEVID 0x0813 20 21 /* Solarstorm controllers use BAR 0 for I/O space and BAR 2(&3) for memory */ 22 #define EFX_MEM_BAR 2 23 24 /* TX */ 25 extern int efx_probe_tx_queue(struct efx_tx_queue *tx_queue); 26 extern void efx_remove_tx_queue(struct efx_tx_queue *tx_queue); 27 extern void efx_init_tx_queue(struct efx_tx_queue *tx_queue); 28 extern void efx_init_tx_queue_core_txq(struct efx_tx_queue *tx_queue); 29 extern void efx_fini_tx_queue(struct efx_tx_queue *tx_queue); 30 extern void efx_release_tx_buffers(struct efx_tx_queue *tx_queue); 31 extern netdev_tx_t 32 efx_hard_start_xmit(struct sk_buff *skb, struct net_device *net_dev); 33 extern netdev_tx_t 34 efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb); 35 extern void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index); 36 extern int efx_setup_tc(struct net_device *net_dev, u8 num_tc); 37 38 /* RX */ 39 extern int efx_probe_rx_queue(struct efx_rx_queue *rx_queue); 40 extern void efx_remove_rx_queue(struct efx_rx_queue *rx_queue); 41 extern void efx_init_rx_queue(struct efx_rx_queue *rx_queue); 42 extern void efx_fini_rx_queue(struct efx_rx_queue *rx_queue); 43 extern void efx_rx_strategy(struct efx_channel *channel); 44 extern void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue); 45 extern void efx_rx_slow_fill(unsigned long context); 46 extern void __efx_rx_packet(struct efx_channel *channel, 47 struct efx_rx_buffer *rx_buf, bool checksummed); 48 extern void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index, 49 unsigned int len, bool checksummed, bool discard); 50 extern void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue); 51 52 #define EFX_MAX_DMAQ_SIZE 4096UL 53 #define EFX_DEFAULT_DMAQ_SIZE 1024UL 54 #define EFX_MIN_DMAQ_SIZE 512UL 55 56 #define EFX_MAX_EVQ_SIZE 16384UL 57 #define EFX_MIN_EVQ_SIZE 512UL 58 59 /* The smallest [rt]xq_entries that the driver supports. Callers of 60 * efx_wake_queue() assume that they can subsequently send at least one 61 * skb. Falcon/A1 may require up to three descriptors per skb_frag. */ 62 #define EFX_MIN_RING_SIZE (roundup_pow_of_two(2 * 3 * MAX_SKB_FRAGS)) 63 64 /* Filters */ 65 extern int efx_probe_filters(struct efx_nic *efx); 66 extern void efx_restore_filters(struct efx_nic *efx); 67 extern void efx_remove_filters(struct efx_nic *efx); 68 extern int efx_filter_insert_filter(struct efx_nic *efx, 69 struct efx_filter_spec *spec, 70 bool replace); 71 extern int efx_filter_remove_filter(struct efx_nic *efx, 72 struct efx_filter_spec *spec); 73 extern void efx_filter_clear_rx(struct efx_nic *efx, 74 enum efx_filter_priority priority); 75 #ifdef CONFIG_RFS_ACCEL 76 extern int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, 77 u16 rxq_index, u32 flow_id); 78 extern bool __efx_filter_rfs_expire(struct efx_nic *efx, unsigned quota); 79 static inline void efx_filter_rfs_expire(struct efx_channel *channel) 80 { 81 if (channel->rfs_filters_added >= 60 && 82 __efx_filter_rfs_expire(channel->efx, 100)) 83 channel->rfs_filters_added -= 60; 84 } 85 #define efx_filter_rfs_enabled() 1 86 #else 87 static inline void efx_filter_rfs_expire(struct efx_channel *channel) {} 88 #define efx_filter_rfs_enabled() 0 89 #endif 90 91 /* Channels */ 92 extern void efx_process_channel_now(struct efx_channel *channel); 93 extern int 94 efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries); 95 96 /* Ports */ 97 extern int efx_reconfigure_port(struct efx_nic *efx); 98 extern int __efx_reconfigure_port(struct efx_nic *efx); 99 100 /* Ethtool support */ 101 extern const struct ethtool_ops efx_ethtool_ops; 102 103 /* Reset handling */ 104 extern int efx_reset(struct efx_nic *efx, enum reset_type method); 105 extern void efx_reset_down(struct efx_nic *efx, enum reset_type method); 106 extern int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok); 107 108 /* Global */ 109 extern void efx_schedule_reset(struct efx_nic *efx, enum reset_type type); 110 extern int efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs, 111 unsigned int rx_usecs, bool rx_adaptive, 112 bool rx_may_override_tx); 113 extern void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs, 114 unsigned int *rx_usecs, bool *rx_adaptive); 115 116 /* Dummy PHY ops for PHY drivers */ 117 extern int efx_port_dummy_op_int(struct efx_nic *efx); 118 extern void efx_port_dummy_op_void(struct efx_nic *efx); 119 120 121 /* MTD */ 122 #ifdef CONFIG_SFC_MTD 123 extern int efx_mtd_probe(struct efx_nic *efx); 124 extern void efx_mtd_rename(struct efx_nic *efx); 125 extern void efx_mtd_remove(struct efx_nic *efx); 126 #else 127 static inline int efx_mtd_probe(struct efx_nic *efx) { return 0; } 128 static inline void efx_mtd_rename(struct efx_nic *efx) {} 129 static inline void efx_mtd_remove(struct efx_nic *efx) {} 130 #endif 131 132 static inline void efx_schedule_channel(struct efx_channel *channel) 133 { 134 netif_vdbg(channel->efx, intr, channel->efx->net_dev, 135 "channel %d scheduling NAPI poll on CPU%d\n", 136 channel->channel, raw_smp_processor_id()); 137 channel->work_pending = true; 138 139 napi_schedule(&channel->napi_str); 140 } 141 142 extern void efx_link_status_changed(struct efx_nic *efx); 143 extern void efx_link_set_advertising(struct efx_nic *efx, u32); 144 extern void efx_link_set_wanted_fc(struct efx_nic *efx, u8); 145 146 #endif /* EFX_EFX_H */ 147