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 #include <linux/if_vlan.h> 28 29 /* Fix for IA64 */ 30 #include <asm/checksum.h> 31 #include <net/ip6_checksum.h> 32 33 #include <net/ip.h> 34 #include <net/tcp.h> 35 36 #include "bna.h" 37 38 #define BNAD_TXQ_DEPTH 2048 39 #define BNAD_RXQ_DEPTH 2048 40 41 #define BNAD_MAX_TX 1 42 #define BNAD_MAX_TXQ_PER_TX 8 /* 8 priority queues */ 43 #define BNAD_TXQ_NUM 1 44 45 #define BNAD_MAX_RX 1 46 #define BNAD_MAX_RXP_PER_RX 16 47 #define BNAD_MAX_RXQ_PER_RXP 2 48 49 /* 50 * Control structure pointed to ccb->ctrl, which 51 * determines the NAPI / LRO behavior CCB 52 * There is 1:1 corres. between ccb & ctrl 53 */ 54 struct bnad_rx_ctrl { 55 struct bna_ccb *ccb; 56 struct bnad *bnad; 57 unsigned long flags; 58 struct napi_struct napi; 59 u64 rx_intr_ctr; 60 u64 rx_poll_ctr; 61 u64 rx_schedule; 62 u64 rx_keep_poll; 63 u64 rx_complete; 64 }; 65 66 #define BNAD_RXMODE_PROMISC_DEFAULT BNA_RXMODE_PROMISC 67 68 /* 69 * GLOBAL #defines (CONSTANTS) 70 */ 71 #define BNAD_NAME "bna" 72 #define BNAD_NAME_LEN 64 73 74 #define BNAD_VERSION "3.2.21.1" 75 76 #define BNAD_MAILBOX_MSIX_INDEX 0 77 #define BNAD_MAILBOX_MSIX_VECTORS 1 78 #define BNAD_INTX_TX_IB_BITMASK 0x1 79 #define BNAD_INTX_RX_IB_BITMASK 0x2 80 81 #define BNAD_STATS_TIMER_FREQ 1000 /* in msecs */ 82 #define BNAD_DIM_TIMER_FREQ 1000 /* in msecs */ 83 84 #define BNAD_IOCETH_TIMEOUT 10000 85 86 #define BNAD_MIN_Q_DEPTH 512 87 #define BNAD_MAX_RXQ_DEPTH 16384 88 #define BNAD_MAX_TXQ_DEPTH 2048 89 90 #define BNAD_JUMBO_MTU 9000 91 92 #define BNAD_NETIF_WAKE_THRESHOLD 8 93 94 #define BNAD_RXQ_REFILL_THRESHOLD_SHIFT 3 95 96 /* Bit positions for tcb->flags */ 97 #define BNAD_TXQ_FREE_SENT 0 98 #define BNAD_TXQ_TX_STARTED 1 99 100 /* Bit positions for rcb->flags */ 101 #define BNAD_RXQ_STARTED 0 102 #define BNAD_RXQ_POST_OK 1 103 104 /* Resource limits */ 105 #define BNAD_NUM_TXQ (bnad->num_tx * bnad->num_txq_per_tx) 106 #define BNAD_NUM_RXP (bnad->num_rx * bnad->num_rxp_per_rx) 107 108 #define BNAD_FRAME_SIZE(_mtu) \ 109 (ETH_HLEN + VLAN_HLEN + (_mtu) + ETH_FCS_LEN) 110 111 /* 112 * DATA STRUCTURES 113 */ 114 115 /* enums */ 116 enum bnad_intr_source { 117 BNAD_INTR_TX = 1, 118 BNAD_INTR_RX = 2 119 }; 120 121 enum bnad_link_state { 122 BNAD_LS_DOWN = 0, 123 BNAD_LS_UP = 1 124 }; 125 126 struct bnad_iocmd_comp { 127 struct bnad *bnad; 128 struct completion comp; 129 int comp_status; 130 }; 131 132 struct bnad_completion { 133 struct completion ioc_comp; 134 struct completion ucast_comp; 135 struct completion mcast_comp; 136 struct completion tx_comp; 137 struct completion rx_comp; 138 struct completion stats_comp; 139 struct completion enet_comp; 140 struct completion mtu_comp; 141 142 u8 ioc_comp_status; 143 u8 ucast_comp_status; 144 u8 mcast_comp_status; 145 u8 tx_comp_status; 146 u8 rx_comp_status; 147 u8 stats_comp_status; 148 u8 port_comp_status; 149 u8 mtu_comp_status; 150 }; 151 152 /* Tx Rx Control Stats */ 153 struct bnad_drv_stats { 154 u64 netif_queue_stop; 155 u64 netif_queue_wakeup; 156 u64 netif_queue_stopped; 157 u64 tso4; 158 u64 tso6; 159 u64 tso_err; 160 u64 tcpcsum_offload; 161 u64 udpcsum_offload; 162 u64 csum_help; 163 u64 tx_skb_too_short; 164 u64 tx_skb_stopping; 165 u64 tx_skb_max_vectors; 166 u64 tx_skb_mss_too_long; 167 u64 tx_skb_tso_too_short; 168 u64 tx_skb_tso_prepare; 169 u64 tx_skb_non_tso_too_long; 170 u64 tx_skb_tcp_hdr; 171 u64 tx_skb_udp_hdr; 172 u64 tx_skb_csum_err; 173 u64 tx_skb_headlen_too_long; 174 u64 tx_skb_headlen_zero; 175 u64 tx_skb_frag_zero; 176 u64 tx_skb_len_mismatch; 177 178 u64 hw_stats_updates; 179 u64 netif_rx_dropped; 180 181 u64 link_toggle; 182 u64 cee_toggle; 183 184 u64 rxp_info_alloc_failed; 185 u64 mbox_intr_disabled; 186 u64 mbox_intr_enabled; 187 u64 tx_unmap_q_alloc_failed; 188 u64 rx_unmap_q_alloc_failed; 189 190 u64 rxbuf_alloc_failed; 191 }; 192 193 /* Complete driver stats */ 194 struct bnad_stats { 195 struct bnad_drv_stats drv_stats; 196 struct bna_stats *bna_stats; 197 }; 198 199 /* Tx / Rx Resources */ 200 struct bnad_tx_res_info { 201 struct bna_res_info res_info[BNA_TX_RES_T_MAX]; 202 }; 203 204 struct bnad_rx_res_info { 205 struct bna_res_info res_info[BNA_RX_RES_T_MAX]; 206 }; 207 208 struct bnad_tx_info { 209 struct bna_tx *tx; /* 1:1 between tx_info & tx */ 210 struct bna_tcb *tcb[BNAD_MAX_TXQ_PER_TX]; 211 u32 tx_id; 212 struct delayed_work tx_cleanup_work; 213 } ____cacheline_aligned; 214 215 struct bnad_rx_info { 216 struct bna_rx *rx; /* 1:1 between rx_info & rx */ 217 218 struct bnad_rx_ctrl rx_ctrl[BNAD_MAX_RXP_PER_RX]; 219 u32 rx_id; 220 struct work_struct rx_cleanup_work; 221 } ____cacheline_aligned; 222 223 struct bnad_tx_vector { 224 DEFINE_DMA_UNMAP_ADDR(dma_addr); 225 }; 226 227 struct bnad_tx_unmap { 228 struct sk_buff *skb; 229 u32 nvecs; 230 struct bnad_tx_vector vectors[BFI_TX_MAX_VECTORS_PER_WI]; 231 }; 232 233 struct bnad_rx_vector { 234 DEFINE_DMA_UNMAP_ADDR(dma_addr); 235 u32 len; 236 }; 237 238 struct bnad_rx_unmap { 239 struct page *page; 240 struct sk_buff *skb; 241 struct bnad_rx_vector vector; 242 u32 page_offset; 243 }; 244 245 enum bnad_rxbuf_type { 246 BNAD_RXBUF_NONE = 0, 247 BNAD_RXBUF_SK_BUFF = 1, 248 BNAD_RXBUF_PAGE = 2, 249 BNAD_RXBUF_MULTI_BUFF = 3 250 }; 251 252 #define BNAD_RXBUF_IS_SK_BUFF(_type) ((_type) == BNAD_RXBUF_SK_BUFF) 253 #define BNAD_RXBUF_IS_MULTI_BUFF(_type) ((_type) == BNAD_RXBUF_MULTI_BUFF) 254 255 struct bnad_rx_unmap_q { 256 int reuse_pi; 257 int alloc_order; 258 u32 map_size; 259 enum bnad_rxbuf_type type; 260 struct bnad_rx_unmap unmap[0] ____cacheline_aligned; 261 }; 262 263 #define BNAD_PCI_DEV_IS_CAT2(_bnad) \ 264 ((_bnad)->pcidev->device == BFA_PCI_DEVICE_ID_CT2) 265 266 /* Bit mask values for bnad->cfg_flags */ 267 #define BNAD_CF_DIM_ENABLED 0x01 /* DIM */ 268 #define BNAD_CF_PROMISC 0x02 269 #define BNAD_CF_ALLMULTI 0x04 270 #define BNAD_CF_DEFAULT 0x08 271 #define BNAD_CF_MSIX 0x10 /* If in MSIx mode */ 272 273 /* Defines for run_flags bit-mask */ 274 /* Set, tested & cleared using xxx_bit() functions */ 275 /* Values indicated bit positions */ 276 #define BNAD_RF_CEE_RUNNING 0 277 #define BNAD_RF_MTU_SET 1 278 #define BNAD_RF_MBOX_IRQ_DISABLED 2 279 #define BNAD_RF_NETDEV_REGISTERED 3 280 #define BNAD_RF_DIM_TIMER_RUNNING 4 281 #define BNAD_RF_STATS_TIMER_RUNNING 5 282 #define BNAD_RF_TX_PRIO_SET 6 283 284 struct bnad { 285 struct net_device *netdev; 286 u32 id; 287 struct list_head list_entry; 288 289 /* Data path */ 290 struct bnad_tx_info tx_info[BNAD_MAX_TX]; 291 struct bnad_rx_info rx_info[BNAD_MAX_RX]; 292 293 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; 294 /* 295 * These q numbers are global only because 296 * they are used to calculate MSIx vectors. 297 * Actually the exact # of queues are per Tx/Rx 298 * object. 299 */ 300 u32 num_tx; 301 u32 num_rx; 302 u32 num_txq_per_tx; 303 u32 num_rxp_per_rx; 304 305 u32 txq_depth; 306 u32 rxq_depth; 307 308 u8 tx_coalescing_timeo; 309 u8 rx_coalescing_timeo; 310 311 struct bna_rx_config rx_config[BNAD_MAX_RX] ____cacheline_aligned; 312 struct bna_tx_config tx_config[BNAD_MAX_TX] ____cacheline_aligned; 313 314 void __iomem *bar0; /* BAR0 address */ 315 316 struct bna bna; 317 318 u32 cfg_flags; 319 unsigned long run_flags; 320 321 struct pci_dev *pcidev; 322 u64 mmio_start; 323 u64 mmio_len; 324 325 u32 msix_num; 326 struct msix_entry *msix_table; 327 328 struct mutex conf_mutex; 329 spinlock_t bna_lock ____cacheline_aligned; 330 331 /* Timers */ 332 struct timer_list ioc_timer; 333 struct timer_list dim_timer; 334 struct timer_list stats_timer; 335 336 /* Control path resources, memory & irq */ 337 struct bna_res_info res_info[BNA_RES_T_MAX]; 338 struct bna_res_info mod_res_info[BNA_MOD_RES_T_MAX]; 339 struct bnad_tx_res_info tx_res_info[BNAD_MAX_TX]; 340 struct bnad_rx_res_info rx_res_info[BNAD_MAX_RX]; 341 342 struct bnad_completion bnad_completions; 343 344 /* Burnt in MAC address */ 345 mac_t perm_addr; 346 347 struct workqueue_struct *work_q; 348 349 /* Statistics */ 350 struct bnad_stats stats; 351 352 struct bnad_diag *diag; 353 354 char adapter_name[BNAD_NAME_LEN]; 355 char port_name[BNAD_NAME_LEN]; 356 char mbox_irq_name[BNAD_NAME_LEN]; 357 char wq_name[BNAD_NAME_LEN]; 358 359 /* debugfs specific data */ 360 char *regdata; 361 u32 reglen; 362 struct dentry *bnad_dentry_files[5]; 363 struct dentry *port_debugfs_root; 364 }; 365 366 struct bnad_drvinfo { 367 struct bfa_ioc_attr ioc_attr; 368 struct bfa_cee_attr cee_attr; 369 struct bfa_flash_attr flash_attr; 370 u32 cee_status; 371 u32 flash_status; 372 }; 373 374 /* 375 * EXTERN VARIABLES 376 */ 377 extern const struct firmware *bfi_fw; 378 379 /* 380 * EXTERN PROTOTYPES 381 */ 382 u32 *cna_get_firmware_buf(struct pci_dev *pdev); 383 /* Netdev entry point prototypes */ 384 void bnad_set_rx_mode(struct net_device *netdev); 385 struct net_device_stats *bnad_get_netdev_stats(struct net_device *netdev); 386 int bnad_mac_addr_set_locked(struct bnad *bnad, u8 *mac_addr); 387 int bnad_enable_default_bcast(struct bnad *bnad); 388 void bnad_restore_vlans(struct bnad *bnad, u32 rx_id); 389 void bnad_set_ethtool_ops(struct net_device *netdev); 390 void bnad_cb_completion(void *arg, enum bfa_status status); 391 392 /* Configuration & setup */ 393 void bnad_tx_coalescing_timeo_set(struct bnad *bnad); 394 void bnad_rx_coalescing_timeo_set(struct bnad *bnad); 395 396 int bnad_setup_rx(struct bnad *bnad, u32 rx_id); 397 int bnad_setup_tx(struct bnad *bnad, u32 tx_id); 398 void bnad_destroy_tx(struct bnad *bnad, u32 tx_id); 399 void bnad_destroy_rx(struct bnad *bnad, u32 rx_id); 400 401 /* Timer start/stop protos */ 402 void bnad_dim_timer_start(struct bnad *bnad); 403 404 /* Statistics */ 405 void bnad_netdev_qstats_fill(struct bnad *bnad, 406 struct rtnl_link_stats64 *stats); 407 void bnad_netdev_hwstats_fill(struct bnad *bnad, 408 struct rtnl_link_stats64 *stats); 409 410 /* Debugfs */ 411 void bnad_debugfs_init(struct bnad *bnad); 412 void bnad_debugfs_uninit(struct bnad *bnad); 413 414 /* MACROS */ 415 /* To set & get the stats counters */ 416 #define BNAD_UPDATE_CTR(_bnad, _ctr) \ 417 (((_bnad)->stats.drv_stats._ctr)++) 418 419 #define BNAD_GET_CTR(_bnad, _ctr) ((_bnad)->stats.drv_stats._ctr) 420 421 #define bnad_enable_rx_irq_unsafe(_ccb) \ 422 { \ 423 if (likely(test_bit(BNAD_RXQ_STARTED, &(_ccb)->rcb[0]->flags))) {\ 424 bna_ib_coalescing_timer_set((_ccb)->i_dbell, \ 425 (_ccb)->rx_coalescing_timeo); \ 426 bna_ib_ack((_ccb)->i_dbell, 0); \ 427 } \ 428 } 429 430 #endif /* __BNAD_H__ */ 431