drivers/net/ethernet/sfc/efx.h

   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 */