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 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 */ 97 enum bnad_intr_source { 98 BNAD_INTR_TX = 1, 99 BNAD_INTR_RX = 2 100 }; 101 102 enum bnad_link_state { 103 BNAD_LS_DOWN = 0, 104 BNAD_LS_UP = 1 105 }; 106 107 struct 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 */ 126 struct 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 */ 156 struct bnad_stats { 157 struct bnad_drv_stats drv_stats; 158 struct bna_stats *bna_stats; 159 }; 160 161 /* Tx / Rx Resources */ 162 struct bnad_tx_res_info { 163 struct bna_res_info res_info[BNA_TX_RES_T_MAX]; 164 }; 165 166 struct bnad_rx_res_info { 167 struct bna_res_info res_info[BNA_RX_RES_T_MAX]; 168 }; 169 170 struct 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; 174 175 struct 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 */ 182 struct bnad_skb_unmap { 183 struct sk_buff *skb; 184 DEFINE_DMA_UNMAP_ADDR(dma_addr); 185 }; 186 187 struct 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 7 211 212 struct 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 */ 289 extern struct firmware *bfi_fw; 290 extern u32 bnad_rxqs_per_cq; 291 292 /* 293 * EXTERN PROTOTYPES 294 */ 295 extern u32 *cna_get_firmware_buf(struct pci_dev *pdev); 296 /* Netdev entry point prototypes */ 297 extern void bnad_set_ethtool_ops(struct net_device *netdev); 298 299 /* Configuration & setup */ 300 extern void bnad_tx_coalescing_timeo_set(struct bnad *bnad); 301 extern void bnad_rx_coalescing_timeo_set(struct bnad *bnad); 302 303 extern int bnad_setup_rx(struct bnad *bnad, uint rx_id); 304 extern int bnad_setup_tx(struct bnad *bnad, uint tx_id); 305 extern void bnad_cleanup_tx(struct bnad *bnad, uint tx_id); 306 extern void bnad_cleanup_rx(struct bnad *bnad, uint rx_id); 307 308 /* Timer start/stop protos */ 309 extern void bnad_dim_timer_start(struct bnad *bnad); 310 311 /* Statistics */ 312 extern void bnad_netdev_qstats_fill(struct bnad *bnad, 313 struct rtnl_link_stats64 *stats); 314 extern 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