linux/drivers/net/bna/bnad.h
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   1/*
   2 * Linux network driver for Brocade Converged Network Adapter.
   3 *
   4 * This program is free software; you can redistribute it and/or modify it
   5 * under the terms of the GNU General Public License (GPL) Version 2 as
   6 * published by the Free Software Foundation
   7 *
   8 * This program is distributed in the hope that it will be useful, but
   9 * WITHOUT ANY WARRANTY; without even the implied warranty of
  10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 * General Public License for more details.
  12 */
  13/*
  14 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
  15 * All rights reserved
  16 * www.brocade.com
  17 */
  18#ifndef __BNAD_H__
  19#define __BNAD_H__
  20
  21#include <linux/rtnetlink.h>
  22#include <linux/workqueue.h>
  23#include <linux/ipv6.h>
  24#include <linux/etherdevice.h>
  25#include <linux/mutex.h>
  26#include <linux/firmware.h>
  27
  28/* Fix for IA64 */
  29#include <asm/checksum.h>
  30#include <net/ip6_checksum.h>
  31
  32#include <net/ip.h>
  33#include <net/tcp.h>
  34
  35#include "bna.h"
  36
  37#define BNAD_TXQ_DEPTH          2048
  38#define BNAD_RXQ_DEPTH          2048
  39
  40#define BNAD_MAX_TXS            1
  41#define BNAD_MAX_TXQ_PER_TX     8       /* 8 priority queues */
  42#define BNAD_TXQ_NUM            1
  43
  44#define BNAD_MAX_RXS            1
  45#define BNAD_MAX_RXPS_PER_RX    16
  46
  47/*
  48 * Control structure pointed to ccb->ctrl, which
  49 * determines the NAPI / LRO behavior CCB
  50 * There is 1:1 corres. between ccb & ctrl
  51 */
  52struct bnad_rx_ctrl {
  53        struct bna_ccb *ccb;
  54        unsigned long  flags;
  55        struct napi_struct      napi;
  56};
  57
  58#define BNAD_RXMODE_PROMISC_DEFAULT     BNA_RXMODE_PROMISC
  59
  60#define BNAD_GET_TX_ID(_skb)    (0)
  61
  62/*
  63 * GLOBAL #defines (CONSTANTS)
  64 */
  65#define BNAD_NAME                       "bna"
  66#define BNAD_NAME_LEN                   64
  67
  68#define BNAD_VERSION                    "2.3.2.3"
  69
  70#define BNAD_MAILBOX_MSIX_VECTORS       1
  71
  72#define BNAD_STATS_TIMER_FREQ           1000    /* in msecs */
  73#define BNAD_DIM_TIMER_FREQ             1000    /* in msecs */
  74
  75#define BNAD_MAX_Q_DEPTH                0x10000
  76#define BNAD_MIN_Q_DEPTH                0x200
  77
  78#define BNAD_JUMBO_MTU                  9000
  79
  80#define BNAD_NETIF_WAKE_THRESHOLD       8
  81
  82#define BNAD_RXQ_REFILL_THRESHOLD_SHIFT 3
  83
  84/* Bit positions for tcb->flags */
  85#define BNAD_TXQ_FREE_SENT              0
  86#define BNAD_TXQ_TX_STARTED             1
  87
  88/* Bit positions for rcb->flags */
  89#define BNAD_RXQ_REFILL                 0
  90#define BNAD_RXQ_STARTED                1
  91
  92/*
  93 * DATA STRUCTURES
  94 */
  95
  96/* enums */
  97enum bnad_intr_source {
  98        BNAD_INTR_TX            = 1,
  99        BNAD_INTR_RX            = 2
 100};
 101
 102enum bnad_link_state {
 103        BNAD_LS_DOWN            = 0,
 104        BNAD_LS_UP              = 1
 105};
 106
 107struct bnad_completion {
 108        struct completion       ioc_comp;
 109        struct completion       ucast_comp;
 110        struct completion       mcast_comp;
 111        struct completion       tx_comp;
 112        struct completion       rx_comp;
 113        struct completion       stats_comp;
 114        struct completion       port_comp;
 115
 116        u8                      ioc_comp_status;
 117        u8                      ucast_comp_status;
 118        u8                      mcast_comp_status;
 119        u8                      tx_comp_status;
 120        u8                      rx_comp_status;
 121        u8                      stats_comp_status;
 122        u8                      port_comp_status;
 123};
 124
 125/* Tx Rx Control Stats */
 126struct bnad_drv_stats {
 127        u64             netif_queue_stop;
 128        u64             netif_queue_wakeup;
 129        u64             netif_queue_stopped;
 130        u64             tso4;
 131        u64             tso6;
 132        u64             tso_err;
 133        u64             tcpcsum_offload;
 134        u64             udpcsum_offload;
 135        u64             csum_help;
 136        u64             csum_help_err;
 137
 138        u64             hw_stats_updates;
 139        u64             netif_rx_schedule;
 140        u64             netif_rx_complete;
 141        u64             netif_rx_dropped;
 142
 143        u64             link_toggle;
 144        u64             cee_up;
 145
 146        u64             rxp_info_alloc_failed;
 147        u64             mbox_intr_disabled;
 148        u64             mbox_intr_enabled;
 149        u64             tx_unmap_q_alloc_failed;
 150        u64             rx_unmap_q_alloc_failed;
 151
 152        u64             rxbuf_alloc_failed;
 153};
 154
 155/* Complete driver stats */
 156struct bnad_stats {
 157        struct bnad_drv_stats drv_stats;
 158        struct bna_stats *bna_stats;
 159};
 160
 161/* Tx / Rx Resources */
 162struct bnad_tx_res_info {
 163        struct bna_res_info res_info[BNA_TX_RES_T_MAX];
 164};
 165
 166struct bnad_rx_res_info {
 167        struct bna_res_info res_info[BNA_RX_RES_T_MAX];
 168};
 169
 170struct bnad_tx_info {
 171        struct bna_tx *tx; /* 1:1 between tx_info & tx */
 172        struct bna_tcb *tcb[BNAD_MAX_TXQ_PER_TX];
 173} ____cacheline_aligned;
 174
 175struct bnad_rx_info {
 176        struct bna_rx *rx; /* 1:1 between rx_info & rx */
 177
 178        struct bnad_rx_ctrl rx_ctrl[BNAD_MAX_RXPS_PER_RX];
 179} ____cacheline_aligned;
 180
 181/* Unmap queues for Tx / Rx cleanup */
 182struct bnad_skb_unmap {
 183        struct sk_buff          *skb;
 184        DECLARE_PCI_UNMAP_ADDR(dma_addr)
 185};
 186
 187struct bnad_unmap_q {
 188        u32             producer_index;
 189        u32             consumer_index;
 190        u32             q_depth;
 191        /* This should be the last one */
 192        struct bnad_skb_unmap unmap_array[1];
 193};
 194
 195/* Bit mask values for bnad->cfg_flags */
 196#define BNAD_CF_DIM_ENABLED             0x01    /* DIM */
 197#define BNAD_CF_PROMISC                 0x02
 198#define BNAD_CF_ALLMULTI                0x04
 199#define BNAD_CF_MSIX                    0x08    /* If in MSIx mode */
 200
 201/* Defines for run_flags bit-mask */
 202/* Set, tested & cleared using xxx_bit() functions */
 203/* Values indicated bit positions */
 204#define BNAD_RF_CEE_RUNNING             1
 205#define BNAD_RF_MBOX_IRQ_DISABLED       2
 206#define BNAD_RF_RX_STARTED              3
 207#define BNAD_RF_DIM_TIMER_RUNNING       4
 208#define BNAD_RF_STATS_TIMER_RUNNING     5
 209#define BNAD_RF_TX_SHUTDOWN_DELAYED     6
 210#define BNAD_RF_RX_SHUTDOWN_DELAYED     7
 211
 212struct bnad {
 213        struct net_device       *netdev;
 214
 215        /* Data path */
 216        struct bnad_tx_info tx_info[BNAD_MAX_TXS];
 217        struct bnad_rx_info rx_info[BNAD_MAX_RXS];
 218
 219        struct vlan_group       *vlan_grp;
 220        /*
 221         * These q numbers are global only because
 222         * they are used to calculate MSIx vectors.
 223         * Actually the exact # of queues are per Tx/Rx
 224         * object.
 225         */
 226        u32             num_tx;
 227        u32             num_rx;
 228        u32             num_txq_per_tx;
 229        u32             num_rxp_per_rx;
 230
 231        u32             txq_depth;
 232        u32             rxq_depth;
 233
 234        u8                      tx_coalescing_timeo;
 235        u8                      rx_coalescing_timeo;
 236
 237        struct bna_rx_config rx_config[BNAD_MAX_RXS];
 238        struct bna_tx_config tx_config[BNAD_MAX_TXS];
 239
 240        u32             rx_csum;
 241
 242        void __iomem            *bar0;  /* BAR0 address */
 243
 244        struct bna bna;
 245
 246        u32             cfg_flags;
 247        unsigned long           run_flags;
 248
 249        struct pci_dev          *pcidev;
 250        u64             mmio_start;
 251        u64             mmio_len;
 252
 253        u32             msix_num;
 254        struct msix_entry       *msix_table;
 255
 256        struct mutex            conf_mutex;
 257        spinlock_t              bna_lock ____cacheline_aligned;
 258
 259        /* Timers */
 260        struct timer_list       ioc_timer;
 261        struct timer_list       dim_timer;
 262        struct timer_list       stats_timer;
 263
 264        /* Control path resources, memory & irq */
 265        struct bna_res_info res_info[BNA_RES_T_MAX];
 266        struct bnad_tx_res_info tx_res_info[BNAD_MAX_TXS];
 267        struct bnad_rx_res_info rx_res_info[BNAD_MAX_RXS];
 268
 269        struct bnad_completion bnad_completions;
 270
 271        /* Burnt in MAC address */
 272        mac_t                   perm_addr;
 273
 274        struct tasklet_struct   tx_free_tasklet;
 275
 276        /* Statistics */
 277        struct bnad_stats stats;
 278
 279        struct bnad_diag *diag;
 280
 281        char                    adapter_name[BNAD_NAME_LEN];
 282        char                    port_name[BNAD_NAME_LEN];
 283        char                    mbox_irq_name[BNAD_NAME_LEN];
 284};
 285
 286/*
 287 * EXTERN VARIABLES
 288 */
 289extern struct firmware *bfi_fw;
 290extern u32              bnad_rxqs_per_cq;
 291
 292/*
 293 * EXTERN PROTOTYPES
 294 */
 295extern u32 *cna_get_firmware_buf(struct pci_dev *pdev);
 296/* Netdev entry point prototypes */
 297extern void bnad_set_ethtool_ops(struct net_device *netdev);
 298
 299/* Configuration & setup */
 300extern void bnad_tx_coalescing_timeo_set(struct bnad *bnad);
 301extern void bnad_rx_coalescing_timeo_set(struct bnad *bnad);
 302
 303extern int bnad_setup_rx(struct bnad *bnad, uint rx_id);
 304extern int bnad_setup_tx(struct bnad *bnad, uint tx_id);
 305extern void bnad_cleanup_tx(struct bnad *bnad, uint tx_id);
 306extern void bnad_cleanup_rx(struct bnad *bnad, uint rx_id);
 307
 308/* Timer start/stop protos */
 309extern void bnad_dim_timer_start(struct bnad *bnad);
 310
 311/* Statistics */
 312extern void bnad_netdev_qstats_fill(struct bnad *bnad,
 313                struct rtnl_link_stats64 *stats);
 314extern void bnad_netdev_hwstats_fill(struct bnad *bnad,
 315                struct rtnl_link_stats64 *stats);
 316
 317/**
 318 * MACROS
 319 */
 320/* To set & get the stats counters */
 321#define BNAD_UPDATE_CTR(_bnad, _ctr)                            \
 322                                (((_bnad)->stats.drv_stats._ctr)++)
 323
 324#define BNAD_GET_CTR(_bnad, _ctr) ((_bnad)->stats.drv_stats._ctr)
 325
 326#define bnad_enable_rx_irq_unsafe(_ccb)                 \
 327{                                                       \
 328        if (likely(test_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags))) {\
 329                bna_ib_coalescing_timer_set((_ccb)->i_dbell,    \
 330                        (_ccb)->rx_coalescing_timeo);           \
 331                bna_ib_ack((_ccb)->i_dbell, 0);                 \
 332        }                                                       \
 333}
 334
 335#define bnad_dim_timer_running(_bnad)                           \
 336        (((_bnad)->cfg_flags & BNAD_CF_DIM_ENABLED) &&          \
 337        (test_bit(BNAD_RF_DIM_TIMER_RUNNING, &((_bnad)->run_flags))))
 338
 339#endif /* __BNAD_H__ */
 340
Hosted by Missing Link Electronics. The original LXR software by the LXR community, this experimental version by lxr@linux.no.