drivers/net/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 EFX_VENDID_SFC          0x1924
  19 #define FALCON_A_P_DEVID        0x0703
  20 #define FALCON_A_S_DEVID        0x6703
  21 #define FALCON_B_P_DEVID        0x0710
  22 #define BETHPAGE_A_P_DEVID      0x0803
  23 #define SIENA_A_P_DEVID         0x0813
  24
  25 /* Solarstorm controllers use BAR 0 for I/O space and BAR 2(&3) for memory */
  26 #define EFX_MEM_BAR 2
  27
  28 /* TX */
  29 extern int efx_probe_tx_queue(struct efx_tx_queue *tx_queue);
  30 extern void efx_remove_tx_queue(struct efx_tx_queue *tx_queue);
  31 extern void efx_init_tx_queue(struct efx_tx_queue *tx_queue);
  32 extern void efx_init_tx_queue_core_txq(struct efx_tx_queue *tx_queue);
  33 extern void efx_fini_tx_queue(struct efx_tx_queue *tx_queue);
  34 extern void efx_release_tx_buffers(struct efx_tx_queue *tx_queue);
  35 extern netdev_tx_t
  36 efx_hard_start_xmit(struct sk_buff *skb, struct net_device *net_dev);
  37 extern netdev_tx_t
  38 efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb);
  39 extern void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index);
  40 extern int efx_setup_tc(struct net_device *net_dev, u8 num_tc);
  41
  42 /* RX */
  43 extern int efx_probe_rx_queue(struct efx_rx_queue *rx_queue);
  44 extern void efx_remove_rx_queue(struct efx_rx_queue *rx_queue);
  45 extern void efx_init_rx_queue(struct efx_rx_queue *rx_queue);
  46 extern void efx_fini_rx_queue(struct efx_rx_queue *rx_queue);
  47 extern void efx_rx_strategy(struct efx_channel *channel);
  48 extern void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue);
  49 extern void efx_rx_slow_fill(unsigned long context);
  50 extern void __efx_rx_packet(struct efx_channel *channel,
  51                             struct efx_rx_buffer *rx_buf, bool checksummed);
  52 extern void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index,
  53                           unsigned int len, bool checksummed, bool discard);
  54 extern void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue);
  55
  56 #define EFX_MAX_DMAQ_SIZE 4096UL
  57 #define EFX_DEFAULT_DMAQ_SIZE 1024UL
  58 #define EFX_MIN_DMAQ_SIZE 512UL
  59
  60 #define EFX_MAX_EVQ_SIZE 16384UL
  61 #define EFX_MIN_EVQ_SIZE 512UL
  62
  63 /* The smallest [rt]xq_entries that the driver supports. Callers of
  64  * efx_wake_queue() assume that they can subsequently send at least one
  65  * skb. Falcon/A1 may require up to three descriptors per skb_frag. */
  66 #define EFX_MIN_RING_SIZE (roundup_pow_of_two(2 * 3 * MAX_SKB_FRAGS))
  67
  68 /* Filters */
  69 extern int efx_probe_filters(struct efx_nic *efx);
  70 extern void efx_restore_filters(struct efx_nic *efx);
  71 extern void efx_remove_filters(struct efx_nic *efx);
  72 extern int efx_filter_insert_filter(struct efx_nic *efx,
  73                                     struct efx_filter_spec *spec,
  74                                     bool replace);
  75 extern int efx_filter_remove_filter(struct efx_nic *efx,
  76                                     struct efx_filter_spec *spec);
  77 extern void efx_filter_clear_rx(struct efx_nic *efx,
  78                                 enum efx_filter_priority priority);
  79 #ifdef CONFIG_RFS_ACCEL
  80 extern int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
  81                           u16 rxq_index, u32 flow_id);
  82 extern bool __efx_filter_rfs_expire(struct efx_nic *efx, unsigned quota);
  83 static inline void efx_filter_rfs_expire(struct efx_channel *channel)
  84 {
  85         if (channel->rfs_filters_added >= 60 &&
  86             __efx_filter_rfs_expire(channel->efx, 100))
  87                 channel->rfs_filters_added -= 60;
  88 }
  89 #define efx_filter_rfs_enabled() 1
  90 #else
  91 static inline void efx_filter_rfs_expire(struct efx_channel *channel) {}
  92 #define efx_filter_rfs_enabled() 0
  93 #endif
  94
  95 /* Channels */
  96 extern void efx_process_channel_now(struct efx_channel *channel);
  97 extern int
  98 efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries);
  99
 100 /* Ports */
 101 extern int efx_reconfigure_port(struct efx_nic *efx);
 102 extern int __efx_reconfigure_port(struct efx_nic *efx);
 103
 104 /* Ethtool support */
 105 extern const struct ethtool_ops efx_ethtool_ops;
 106
 107 /* Reset handling */
 108 extern int efx_reset(struct efx_nic *efx, enum reset_type method);
 109 extern void efx_reset_down(struct efx_nic *efx, enum reset_type method);
 110 extern int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok);
 111
 112 /* Global */
 113 extern void efx_schedule_reset(struct efx_nic *efx, enum reset_type type);
 114 extern void efx_init_irq_moderation(struct efx_nic *efx, int tx_usecs,
 115                                     int rx_usecs, bool rx_adaptive);
 116
 117 /* Dummy PHY ops for PHY drivers */
 118 extern int efx_port_dummy_op_int(struct efx_nic *efx);
 119 extern void efx_port_dummy_op_void(struct efx_nic *efx);
 120
 121
 122 /* MTD */
 123 #ifdef CONFIG_SFC_MTD
 124 extern int efx_mtd_probe(struct efx_nic *efx);
 125 extern void efx_mtd_rename(struct efx_nic *efx);
 126 extern void efx_mtd_remove(struct efx_nic *efx);
 127 #else
 128 static inline int efx_mtd_probe(struct efx_nic *efx) { return 0; }
 129 static inline void efx_mtd_rename(struct efx_nic *efx) {}
 130 static inline void efx_mtd_remove(struct efx_nic *efx) {}
 131 #endif
 132
 133 static inline void efx_schedule_channel(struct efx_channel *channel)
 134 {
 135         netif_vdbg(channel->efx, intr, channel->efx->net_dev,
 136                    "channel %d scheduling NAPI poll on CPU%d\n",
 137                    channel->channel, raw_smp_processor_id());
 138         channel->work_pending = true;
 139
 140         napi_schedule(&channel->napi_str);
 141 }
 142
 143 extern void efx_link_status_changed(struct efx_nic *efx);
 144 extern void efx_link_set_advertising(struct efx_nic *efx, u32);
 145 extern void efx_link_set_wanted_fc(struct efx_nic *efx, enum efx_fc_type);
 146
 147 #endif /* EFX_EFX_H */