drivers/net/bna/bnad.h

   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  */
  52 struct bnad_rx_ctrl {
  53         struct bna_ccb *ccb;
  54         struct napi_struct      napi;
  55 };
  56
  57 #define BNAD_RXMODE_PROMISC_DEFAULT     BNA_RXMODE_PROMISC
  58
  59 #define BNAD_GET_TX_ID(_skb)    (0)
  60
  61 /*
  62  * GLOBAL #defines (CONSTANTS)
  63  */
  64 #define BNAD_NAME                       "bna"
  65 #define BNAD_NAME_LEN                   64
  66
  67 #define BNAD_VERSION                    "2.3.2.0"
  68
  69 #define BNAD_MAILBOX_MSIX_VECTORS       1
  70
  71 #define BNAD_STATS_TIMER_FREQ           1000    /* in msecs */
  72 #define BNAD_DIM_TIMER_FREQ             1000    /* in msecs */
  73
  74 #define BNAD_MAX_Q_DEPTH                0x10000
  75 #define BNAD_MIN_Q_DEPTH                0x200
  76
  77 #define BNAD_JUMBO_MTU                  9000
  78
  79 #define BNAD_NETIF_WAKE_THRESHOLD       8
  80
  81 #define BNAD_RXQ_REFILL_THRESHOLD_SHIFT 3
  82
  83 /* Bit positions for tcb->flags */
  84 #define BNAD_TXQ_FREE_SENT              0
  85
  86 /* Bit positions for rcb->flags */
  87 #define BNAD_RXQ_REFILL                 0
  88 #define BNAD_RXQ_STARTED                1
  89
  90 /*
  91  * DATA STRUCTURES
  92  */
  93
  94 /* enums */
  95 enum bnad_intr_source {
  96         BNAD_INTR_TX            = 1,
  97         BNAD_INTR_RX            = 2
  98 };
  99
 100 enum bnad_link_state {
 101         BNAD_LS_DOWN            = 0,
 102         BNAD_LS_UP              = 1
 103 };
 104
 105 struct bnad_completion {
 106         struct completion       ioc_comp;
 107         struct completion       ucast_comp;
 108         struct completion       mcast_comp;
 109         struct completion       tx_comp;
 110         struct completion       rx_comp;
 111         struct completion       stats_comp;
 112         struct completion       port_comp;
 113
 114         u8                      ioc_comp_status;
 115         u8                      ucast_comp_status;
 116         u8                      mcast_comp_status;
 117         u8                      tx_comp_status;
 118         u8                      rx_comp_status;
 119         u8                      stats_comp_status;
 120         u8                      port_comp_status;
 121 };
 122
 123 /* Tx Rx Control Stats */
 124 struct bnad_drv_stats {
 125         u64             netif_queue_stop;
 126         u64             netif_queue_wakeup;
 127         u64             tso4;
 128         u64             tso6;
 129         u64             tso_err;
 130         u64             tcpcsum_offload;
 131         u64             udpcsum_offload;
 132         u64             csum_help;
 133         u64             csum_help_err;
 134
 135         u64             hw_stats_updates;
 136         u64             netif_rx_schedule;
 137         u64             netif_rx_complete;
 138         u64             netif_rx_dropped;
 139
 140         u64             link_toggle;
 141         u64             cee_up;
 142
 143         u64             rxp_info_alloc_failed;
 144         u64             mbox_intr_disabled;
 145         u64             mbox_intr_enabled;
 146         u64             tx_unmap_q_alloc_failed;
 147         u64             rx_unmap_q_alloc_failed;
 148
 149         u64             rxbuf_alloc_failed;
 150 };
 151
 152 /* Complete driver stats */
 153 struct bnad_stats {
 154         struct bnad_drv_stats drv_stats;
 155         struct bna_stats *bna_stats;
 156 };
 157
 158 /* Tx / Rx Resources */
 159 struct bnad_tx_res_info {
 160         struct bna_res_info res_info[BNA_TX_RES_T_MAX];
 161 };
 162
 163 struct bnad_rx_res_info {
 164         struct bna_res_info res_info[BNA_RX_RES_T_MAX];
 165 };
 166
 167 struct bnad_tx_info {
 168         struct bna_tx *tx; /* 1:1 between tx_info & tx */
 169         struct bna_tcb *tcb[BNAD_MAX_TXQ_PER_TX];
 170 } ____cacheline_aligned;
 171
 172 struct bnad_rx_info {
 173         struct bna_rx *rx; /* 1:1 between rx_info & rx */
 174
 175         struct bnad_rx_ctrl rx_ctrl[BNAD_MAX_RXPS_PER_RX];
 176 } ____cacheline_aligned;
 177
 178 /* Unmap queues for Tx / Rx cleanup */
 179 struct bnad_skb_unmap {
 180         struct sk_buff          *skb;
 181         DECLARE_PCI_UNMAP_ADDR(dma_addr)
 182 };
 183
 184 struct bnad_unmap_q {
 185         u32             producer_index;
 186         u32             consumer_index;
 187         u32             q_depth;
 188         /* This should be the last one */
 189         struct bnad_skb_unmap unmap_array[1];
 190 };
 191
 192 /* Bit mask values for bnad->cfg_flags */
 193 #define BNAD_CF_DIM_ENABLED             0x01    /* DIM */
 194 #define BNAD_CF_PROMISC                 0x02
 195 #define BNAD_CF_ALLMULTI                0x04
 196 #define BNAD_CF_MSIX                    0x08    /* If in MSIx mode */
 197
 198 /* Defines for run_flags bit-mask */
 199 /* Set, tested & cleared using xxx_bit() functions */
 200 /* Values indicated bit positions */
 201 #define BNAD_RF_CEE_RUNNING             1
 202 #define BNAD_RF_HW_ERROR                2
 203 #define BNAD_RF_MBOX_IRQ_DISABLED       3
 204 #define BNAD_RF_TX_STARTED              4
 205 #define BNAD_RF_RX_STARTED              5
 206 #define BNAD_RF_DIM_TIMER_RUNNING       6
 207 #define BNAD_RF_STATS_TIMER_RUNNING     7
 208
 209 struct bnad {
 210         struct net_device       *netdev;
 211
 212         /* Data path */
 213         struct bnad_tx_info tx_info[BNAD_MAX_TXS];
 214         struct bnad_rx_info rx_info[BNAD_MAX_RXS];
 215
 216         struct vlan_group       *vlan_grp;
 217         /*
 218          * These q numbers are global only because
 219          * they are used to calculate MSIx vectors.
 220          * Actually the exact # of queues are per Tx/Rx
 221          * object.
 222          */
 223         u32             num_tx;
 224         u32             num_rx;
 225         u32             num_txq_per_tx;
 226         u32             num_rxp_per_rx;
 227
 228         u32             txq_depth;
 229         u32             rxq_depth;
 230
 231         u8                      tx_coalescing_timeo;
 232         u8                      rx_coalescing_timeo;
 233
 234         struct bna_rx_config rx_config[BNAD_MAX_RXS];
 235         struct bna_tx_config tx_config[BNAD_MAX_TXS];
 236
 237         u32             rx_csum;
 238
 239         void __iomem            *bar0;  /* BAR0 address */
 240
 241         struct bna bna;
 242
 243         u32             cfg_flags;
 244         unsigned long           run_flags;
 245
 246         struct pci_dev          *pcidev;
 247         u64             mmio_start;
 248         u64             mmio_len;
 249
 250         u32             msix_num;
 251         struct msix_entry       *msix_table;
 252
 253         struct mutex            conf_mutex;
 254         spinlock_t              bna_lock ____cacheline_aligned;
 255
 256         /* Timers */
 257         struct timer_list       ioc_timer;
 258         struct timer_list       dim_timer;
 259         struct timer_list       stats_timer;
 260
 261         /* Control path resources, memory & irq */
 262         struct bna_res_info res_info[BNA_RES_T_MAX];
 263         struct bnad_tx_res_info tx_res_info[BNAD_MAX_TXS];
 264         struct bnad_rx_res_info rx_res_info[BNAD_MAX_RXS];
 265
 266         struct bnad_completion bnad_completions;
 267
 268         /* Burnt in MAC address */
 269         mac_t                   perm_addr;
 270
 271         struct tasklet_struct   tx_free_tasklet;
 272
 273         /* Statistics */
 274         struct bnad_stats stats;
 275
 276         struct bnad_diag *diag;
 277
 278         char                    adapter_name[BNAD_NAME_LEN];
 279         char                    port_name[BNAD_NAME_LEN];
 280         char                    mbox_irq_name[BNAD_NAME_LEN];
 281 };
 282
 283 /*
 284  * EXTERN VARIABLES
 285  */
 286 extern struct firmware *bfi_fw;
 287 extern u32              bnad_rxqs_per_cq;
 288
 289 /*
 290  * EXTERN PROTOTYPES
 291  */
 292 extern u32 *cna_get_firmware_buf(struct pci_dev *pdev);
 293 /* Netdev entry point prototypes */
 294 extern void bnad_set_ethtool_ops(struct net_device *netdev);
 295
 296 /* Configuration & setup */
 297 extern void bnad_tx_coalescing_timeo_set(struct bnad *bnad);
 298 extern void bnad_rx_coalescing_timeo_set(struct bnad *bnad);
 299
 300 extern int bnad_setup_rx(struct bnad *bnad, uint rx_id);
 301 extern int bnad_setup_tx(struct bnad *bnad, uint tx_id);
 302 extern void bnad_cleanup_tx(struct bnad *bnad, uint tx_id);
 303 extern void bnad_cleanup_rx(struct bnad *bnad, uint rx_id);
 304
 305 /* Timer start/stop protos */
 306 extern void bnad_dim_timer_start(struct bnad *bnad);
 307
 308 /* Statistics */
 309 extern void bnad_netdev_qstats_fill(struct bnad *bnad, struct rtnl_link_stats64 *stats);
 310 extern void bnad_netdev_hwstats_fill(struct bnad *bnad, struct rtnl_link_stats64 *stats);
 311
 312 /**
 313  * MACROS
 314  */
 315 /* To set & get the stats counters */
 316 #define BNAD_UPDATE_CTR(_bnad, _ctr)                            \
 317                                 (((_bnad)->stats.drv_stats._ctr)++)
 318
 319 #define BNAD_GET_CTR(_bnad, _ctr) ((_bnad)->stats.drv_stats._ctr)
 320
 321 #define bnad_enable_rx_irq_unsafe(_ccb)                 \
 322 {                                                       \
 323         bna_ib_coalescing_timer_set((_ccb)->i_dbell,    \
 324                 (_ccb)->rx_coalescing_timeo);           \
 325         bna_ib_ack((_ccb)->i_dbell, 0);                 \
 326 }
 327
 328 #define bnad_dim_timer_running(_bnad)                           \
 329         (((_bnad)->cfg_flags & BNAD_CF_DIM_ENABLED) &&          \
 330         (test_bit(BNAD_RF_DIM_TIMER_RUNNING, &((_bnad)->run_flags))))
 331
 332 #endif /* __BNAD_H__ */