drivers/net/sfc/falcon.h

   1 /****************************************************************************
   2  * Driver for Solarflare Solarstorm network controllers and boards
   3  * Copyright 2005-2006 Fen Systems Ltd.
   4  * Copyright 2006-2008 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_FALCON_H
  12 #define EFX_FALCON_H
  13
  14 #include "net_driver.h"
  15 #include "efx.h"
  16
  17 /*
  18  * Falcon hardware control
  19  */
  20
  21 enum falcon_revision {
  22         FALCON_REV_A0 = 0,
  23         FALCON_REV_A1 = 1,
  24         FALCON_REV_B0 = 2,
  25 };
  26
  27 static inline int falcon_rev(struct efx_nic *efx)
  28 {
  29         return efx->pci_dev->revision;
  30 }
  31
  32 extern struct efx_nic_type falcon_a_nic_type;
  33 extern struct efx_nic_type falcon_b_nic_type;
  34
  35 /**************************************************************************
  36  *
  37  * Externs
  38  *
  39  **************************************************************************
  40  */
  41
  42 /* TX data path */
  43 extern int falcon_probe_tx(struct efx_tx_queue *tx_queue);
  44 extern void falcon_init_tx(struct efx_tx_queue *tx_queue);
  45 extern void falcon_fini_tx(struct efx_tx_queue *tx_queue);
  46 extern void falcon_remove_tx(struct efx_tx_queue *tx_queue);
  47 extern void falcon_push_buffers(struct efx_tx_queue *tx_queue);
  48
  49 /* RX data path */
  50 extern int falcon_probe_rx(struct efx_rx_queue *rx_queue);
  51 extern void falcon_init_rx(struct efx_rx_queue *rx_queue);
  52 extern void falcon_fini_rx(struct efx_rx_queue *rx_queue);
  53 extern void falcon_remove_rx(struct efx_rx_queue *rx_queue);
  54 extern void falcon_notify_rx_desc(struct efx_rx_queue *rx_queue);
  55
  56 /* Event data path */
  57 extern int falcon_probe_eventq(struct efx_channel *channel);
  58 extern void falcon_init_eventq(struct efx_channel *channel);
  59 extern void falcon_fini_eventq(struct efx_channel *channel);
  60 extern void falcon_remove_eventq(struct efx_channel *channel);
  61 extern int falcon_process_eventq(struct efx_channel *channel, int rx_quota);
  62 extern void falcon_eventq_read_ack(struct efx_channel *channel);
  63
  64 /* Ports */
  65 extern int falcon_probe_port(struct efx_nic *efx);
  66 extern void falcon_remove_port(struct efx_nic *efx);
  67
  68 /* MAC/PHY */
  69 extern int falcon_switch_mac(struct efx_nic *efx);
  70 extern bool falcon_xaui_link_ok(struct efx_nic *efx);
  71 extern int falcon_dma_stats(struct efx_nic *efx,
  72                             unsigned int done_offset);
  73 extern void falcon_drain_tx_fifo(struct efx_nic *efx);
  74 extern void falcon_deconfigure_mac_wrapper(struct efx_nic *efx);
  75 extern void falcon_reconfigure_mac_wrapper(struct efx_nic *efx);
  76
  77 /* Interrupts and test events */
  78 extern int falcon_init_interrupt(struct efx_nic *efx);
  79 extern void falcon_enable_interrupts(struct efx_nic *efx);
  80 extern void falcon_generate_test_event(struct efx_channel *channel,
  81                                        unsigned int magic);
  82 extern void falcon_sim_phy_event(struct efx_nic *efx);
  83 extern void falcon_generate_interrupt(struct efx_nic *efx);
  84 extern void falcon_set_int_moderation(struct efx_channel *channel);
  85 extern void falcon_disable_interrupts(struct efx_nic *efx);
  86 extern void falcon_fini_interrupt(struct efx_nic *efx);
  87
  88 /* Global Resources */
  89 extern int falcon_probe_nic(struct efx_nic *efx);
  90 extern int falcon_probe_resources(struct efx_nic *efx);
  91 extern int falcon_init_nic(struct efx_nic *efx);
  92 extern int falcon_flush_queues(struct efx_nic *efx);
  93 extern int falcon_reset_hw(struct efx_nic *efx, enum reset_type method);
  94 extern void falcon_remove_resources(struct efx_nic *efx);
  95 extern void falcon_remove_nic(struct efx_nic *efx);
  96 extern void falcon_update_nic_stats(struct efx_nic *efx);
  97 extern void falcon_set_multicast_hash(struct efx_nic *efx);
  98 extern int falcon_reset_xaui(struct efx_nic *efx);
  99
 100 /* Tests */
 101 struct falcon_nvconfig;
 102 extern int falcon_read_nvram(struct efx_nic *efx,
 103                              struct falcon_nvconfig *nvconfig);
 104 extern int falcon_test_registers(struct efx_nic *efx);
 105
 106 /**************************************************************************
 107  *
 108  * Falcon MAC stats
 109  *
 110  **************************************************************************
 111  */
 112
 113 #define FALCON_STAT_OFFSET(falcon_stat) EFX_VAL(falcon_stat, offset)
 114 #define FALCON_STAT_WIDTH(falcon_stat) EFX_VAL(falcon_stat, WIDTH)
 115
 116 /* Retrieve statistic from statistics block */
 117 #define FALCON_STAT(efx, falcon_stat, efx_stat) do {            \
 118         if (FALCON_STAT_WIDTH(falcon_stat) == 16)               \
 119                 (efx)->mac_stats.efx_stat += le16_to_cpu(       \
 120                         *((__force __le16 *)                            \
 121                           (efx->stats_buffer.addr +             \
 122                            FALCON_STAT_OFFSET(falcon_stat))));  \
 123         else if (FALCON_STAT_WIDTH(falcon_stat) == 32)          \
 124                 (efx)->mac_stats.efx_stat += le32_to_cpu(       \
 125                         *((__force __le32 *)                            \
 126                           (efx->stats_buffer.addr +             \
 127                            FALCON_STAT_OFFSET(falcon_stat))));  \
 128         else                                                    \
 129                 (efx)->mac_stats.efx_stat += le64_to_cpu(       \
 130                         *((__force __le64 *)                            \
 131                           (efx->stats_buffer.addr +             \
 132                            FALCON_STAT_OFFSET(falcon_stat))));  \
 133         } while (0)
 134
 135 #define FALCON_MAC_STATS_SIZE 0x100
 136
 137 #define MAC_DATA_LBN 0
 138 #define MAC_DATA_WIDTH 32
 139
 140 extern void falcon_generate_event(struct efx_channel *channel,
 141                                   efx_qword_t *event);
 142
 143 #endif /* EFX_FALCON_H */