1 /* 2 * Linux network driver for QLogic BR-series 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) 2005-2014 Brocade Communications Systems, Inc. 15 * Copyright (c) 2014-2015 QLogic Corporation 16 * All rights reserved 17 * www.qlogic.com 18 */ 19 #ifndef __BNAD_H__ 20 #define __BNAD_H__ 21 22 #include <linux/rtnetlink.h> 23 #include <linux/workqueue.h> 24 #include <linux/ipv6.h> 25 #include <linux/etherdevice.h> 26 #include <linux/mutex.h> 27 #include <linux/firmware.h> 28 #include <linux/if_vlan.h> 29 30 /* Fix for IA64 */ 31 #include <asm/checksum.h> 32 #include <net/ip6_checksum.h> 33 34 #include <net/ip.h> 35 #include <net/tcp.h> 36 37 #include "bna.h" 38 39 #define BNAD_TXQ_DEPTH 2048 40 #define BNAD_RXQ_DEPTH 2048 41 42 #define BNAD_MAX_TX 1 43 #define BNAD_MAX_TXQ_PER_TX 8 /* 8 priority queues */ 44 #define BNAD_TXQ_NUM 1 45 46 #define BNAD_MAX_RX 1 47 #define BNAD_MAX_RXP_PER_RX 16 48 #define BNAD_MAX_RXQ_PER_RXP 2 49 50 /* 51 * Control structure pointed to ccb->ctrl, which 52 * determines the NAPI / LRO behavior CCB 53 * There is 1:1 corres. between ccb & ctrl 54 */ 55 struct bnad_rx_ctrl { 56 struct bna_ccb *ccb; 57 struct bnad *bnad; 58 unsigned long flags; 59 struct napi_struct napi; 60 u64 rx_intr_ctr; 61 u64 rx_poll_ctr; 62 u64 rx_schedule; 63 u64 rx_keep_poll; 64 u64 rx_complete; 65 }; 66 67 #define BNAD_RXMODE_PROMISC_DEFAULT BNA_RXMODE_PROMISC 68 69 /* 70 * GLOBAL #defines (CONSTANTS) 71 */ 72 #define BNAD_NAME "bna" 73 #define BNAD_NAME_LEN 64 74 75 #define BNAD_VERSION "3.2.25.1" 76 77 #define BNAD_MAILBOX_MSIX_INDEX 0 78 #define BNAD_MAILBOX_MSIX_VECTORS 1 79 #define BNAD_INTX_TX_IB_BITMASK 0x1 80 #define BNAD_INTX_RX_IB_BITMASK 0x2 81 82 #define BNAD_STATS_TIMER_FREQ 1000 /* in msecs */ 83 #define BNAD_DIM_TIMER_FREQ 1000 /* in msecs */ 84 85 #define BNAD_IOCETH_TIMEOUT 10000 86 87 #define BNAD_MIN_Q_DEPTH 512 88 #define BNAD_MAX_RXQ_DEPTH 16384 89 #define BNAD_MAX_TXQ_DEPTH 2048 90 91 #define BNAD_JUMBO_MTU 9000 92 93 #define BNAD_NETIF_WAKE_THRESHOLD 8 94 95 #define BNAD_RXQ_REFILL_THRESHOLD_SHIFT 3 96 97 /* Bit positions for tcb->flags */ 98 #define BNAD_TXQ_FREE_SENT 0 99 #define BNAD_TXQ_TX_STARTED 1 100 101 /* Bit positions for rcb->flags */ 102 #define BNAD_RXQ_STARTED 0 103 #define BNAD_RXQ_POST_OK 1 104 105 /* Resource limits */ 106 #define BNAD_NUM_TXQ (bnad->num_tx * bnad->num_txq_per_tx) 107 #define BNAD_NUM_RXP (bnad->num_rx * bnad->num_rxp_per_rx) 108 109 #define BNAD_FRAME_SIZE(_mtu) \ 110 (ETH_HLEN + VLAN_HLEN + (_mtu) + ETH_FCS_LEN) 111 112 /* 113 * DATA STRUCTURES 114 */ 115 116 /* enums */ 117 enum bnad_intr_source { 118 BNAD_INTR_TX = 1, 119 BNAD_INTR_RX = 2 120 }; 121 122 enum bnad_link_state { 123 BNAD_LS_DOWN = 0, 124 BNAD_LS_UP = 1 125 }; 126 127 struct bnad_iocmd_comp { 128 struct bnad *bnad; 129 struct completion comp; 130 int comp_status; 131 }; 132 133 struct bnad_completion { 134 struct completion ioc_comp; 135 struct completion ucast_comp; 136 struct completion mcast_comp; 137 struct completion tx_comp; 138 struct completion rx_comp; 139 struct completion stats_comp; 140 struct completion enet_comp; 141 struct completion mtu_comp; 142 143 u8 ioc_comp_status; 144 u8 ucast_comp_status; 145 u8 mcast_comp_status; 146 u8 tx_comp_status; 147 u8 rx_comp_status; 148 u8 stats_comp_status; 149 u8 port_comp_status; 150 u8 mtu_comp_status; 151 }; 152 153 /* Tx Rx Control Stats */ 154 struct bnad_drv_stats { 155 u64 netif_queue_stop; 156 u64 netif_queue_wakeup; 157 u64 netif_queue_stopped; 158 u64 tso4; 159 u64 tso6; 160 u64 tso_err; 161 u64 tcpcsum_offload; 162 u64 udpcsum_offload; 163 u64 csum_help; 164 u64 tx_skb_too_short; 165 u64 tx_skb_stopping; 166 u64 tx_skb_max_vectors; 167 u64 tx_skb_mss_too_long; 168 u64 tx_skb_tso_too_short; 169 u64 tx_skb_tso_prepare; 170 u64 tx_skb_non_tso_too_long; 171 u64 tx_skb_tcp_hdr; 172 u64 tx_skb_udp_hdr; 173 u64 tx_skb_csum_err; 174 u64 tx_skb_headlen_too_long; 175 u64 tx_skb_headlen_zero; 176 u64 tx_skb_frag_zero; 177 u64 tx_skb_len_mismatch; 178 179 u64 hw_stats_updates; 180 u64 netif_rx_dropped; 181 182 u64 link_toggle; 183 u64 cee_toggle; 184 185 u64 rxp_info_alloc_failed; 186 u64 mbox_intr_disabled; 187 u64 mbox_intr_enabled; 188 u64 tx_unmap_q_alloc_failed; 189 u64 rx_unmap_q_alloc_failed; 190 191 u64 rxbuf_alloc_failed; 192 }; 193 194 /* Complete driver stats */ 195 struct bnad_stats { 196 struct bnad_drv_stats drv_stats; 197 struct bna_stats *bna_stats; 198 }; 199 200 /* Tx / Rx Resources */ 201 struct bnad_tx_res_info { 202 struct bna_res_info res_info[BNA_TX_RES_T_MAX]; 203 }; 204 205 struct bnad_rx_res_info { 206 struct bna_res_info res_info[BNA_RX_RES_T_MAX]; 207 }; 208 209 struct bnad_tx_info { 210 struct bna_tx *tx; /* 1:1 between tx_info & tx */ 211 struct bna_tcb *tcb[BNAD_MAX_TXQ_PER_TX]; 212 u32 tx_id; 213 struct delayed_work tx_cleanup_work; 214 } ____cacheline_aligned; 215 216 struct bnad_rx_info { 217 struct bna_rx *rx; /* 1:1 between rx_info & rx */ 218 219 struct bnad_rx_ctrl rx_ctrl[BNAD_MAX_RXP_PER_RX]; 220 u32 rx_id; 221 struct work_struct rx_cleanup_work; 222 } ____cacheline_aligned; 223 224 struct bnad_tx_vector { 225 DEFINE_DMA_UNMAP_ADDR(dma_addr); 226 DEFINE_DMA_UNMAP_LEN(dma_len); 227 }; 228 229 struct bnad_tx_unmap { 230 struct sk_buff *skb; 231 u32 nvecs; 232 struct bnad_tx_vector vectors[BFI_TX_MAX_VECTORS_PER_WI]; 233 }; 234 235 struct bnad_rx_vector { 236 DEFINE_DMA_UNMAP_ADDR(dma_addr); 237 u32 len; 238 }; 239 240 struct bnad_rx_unmap { 241 struct page *page; 242 struct sk_buff *skb; 243 struct bnad_rx_vector vector; 244 u32 page_offset; 245 }; 246 247 enum bnad_rxbuf_type { 248 BNAD_RXBUF_NONE = 0, 249 BNAD_RXBUF_SK_BUFF = 1, 250 BNAD_RXBUF_PAGE = 2, 251 BNAD_RXBUF_MULTI_BUFF = 3 252 }; 253 254 #define BNAD_RXBUF_IS_SK_BUFF(_type) ((_type) == BNAD_RXBUF_SK_BUFF) 255 #define BNAD_RXBUF_IS_MULTI_BUFF(_type) ((_type) == BNAD_RXBUF_MULTI_BUFF) 256 257 struct bnad_rx_unmap_q { 258 int reuse_pi; 259 int alloc_order; 260 u32 map_size; 261 enum bnad_rxbuf_type type; 262 struct bnad_rx_unmap unmap[0] ____cacheline_aligned; 263 }; 264 265 #define BNAD_PCI_DEV_IS_CAT2(_bnad) \ 266 ((_bnad)->pcidev->device == BFA_PCI_DEVICE_ID_CT2) 267 268 /* Bit mask values for bnad->cfg_flags */ 269 #define BNAD_CF_DIM_ENABLED 0x01 /* DIM */ 270 #define BNAD_CF_PROMISC 0x02 271 #define BNAD_CF_ALLMULTI 0x04 272 #define BNAD_CF_DEFAULT 0x08 273 #define BNAD_CF_MSIX 0x10 /* If in MSIx mode */ 274 275 /* Defines for run_flags bit-mask */ 276 /* Set, tested & cleared using xxx_bit() functions */ 277 /* Values indicated bit positions */ 278 #define BNAD_RF_CEE_RUNNING 0 279 #define BNAD_RF_MTU_SET 1 280 #define BNAD_RF_MBOX_IRQ_DISABLED 2 281 #define BNAD_RF_NETDEV_REGISTERED 3 282 #define BNAD_RF_DIM_TIMER_RUNNING 4 283 #define BNAD_RF_STATS_TIMER_RUNNING 5 284 #define BNAD_RF_TX_PRIO_SET 6 285 286 struct bnad { 287 struct net_device *netdev; 288 u32 id; 289 struct list_head list_entry; 290 291 /* Data path */ 292 struct bnad_tx_info tx_info[BNAD_MAX_TX]; 293 struct bnad_rx_info rx_info[BNAD_MAX_RX]; 294 295 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; 296 /* 297 * These q numbers are global only because 298 * they are used to calculate MSIx vectors. 299 * Actually the exact # of queues are per Tx/Rx 300 * object. 301 */ 302 u32 num_tx; 303 u32 num_rx; 304 u32 num_txq_per_tx; 305 u32 num_rxp_per_rx; 306 307 u32 txq_depth; 308 u32 rxq_depth; 309 310 u8 tx_coalescing_timeo; 311 u8 rx_coalescing_timeo; 312 313 struct bna_rx_config rx_config[BNAD_MAX_RX] ____cacheline_aligned; 314 struct bna_tx_config tx_config[BNAD_MAX_TX] ____cacheline_aligned; 315 316 void __iomem *bar0; /* BAR0 address */ 317 318 struct bna bna; 319 320 u32 cfg_flags; 321 unsigned long run_flags; 322 323 struct pci_dev *pcidev; 324 u64 mmio_start; 325 u64 mmio_len; 326 327 u32 msix_num; 328 struct msix_entry *msix_table; 329 330 struct mutex conf_mutex; 331 spinlock_t bna_lock ____cacheline_aligned; 332 333 /* Timers */ 334 struct timer_list ioc_timer; 335 struct timer_list dim_timer; 336 struct timer_list stats_timer; 337 338 /* Control path resources, memory & irq */ 339 struct bna_res_info res_info[BNA_RES_T_MAX]; 340 struct bna_res_info mod_res_info[BNA_MOD_RES_T_MAX]; 341 struct bnad_tx_res_info tx_res_info[BNAD_MAX_TX]; 342 struct bnad_rx_res_info rx_res_info[BNAD_MAX_RX]; 343 344 struct bnad_completion bnad_completions; 345 346 /* Burnt in MAC address */ 347 mac_t perm_addr; 348 349 struct workqueue_struct *work_q; 350 351 /* Statistics */ 352 struct bnad_stats stats; 353 354 struct bnad_diag *diag; 355 356 char adapter_name[BNAD_NAME_LEN]; 357 char port_name[BNAD_NAME_LEN]; 358 char mbox_irq_name[BNAD_NAME_LEN]; 359 char wq_name[BNAD_NAME_LEN]; 360 361 /* debugfs specific data */ 362 char *regdata; 363 u32 reglen; 364 struct dentry *bnad_dentry_files[5]; 365 struct dentry *port_debugfs_root; 366 }; 367 368 struct bnad_drvinfo { 369 struct bfa_ioc_attr ioc_attr; 370 struct bfa_cee_attr cee_attr; 371 struct bfa_flash_attr flash_attr; 372 u32 cee_status; 373 u32 flash_status; 374 }; 375 376 /* 377 * EXTERN VARIABLES 378 */ 379 extern const struct firmware *bfi_fw; 380 381 /* 382 * EXTERN PROTOTYPES 383 */ 384 u32 *cna_get_firmware_buf(struct pci_dev *pdev); 385 /* Netdev entry point prototypes */ 386 void bnad_set_rx_mode(struct net_device *netdev); 387 struct net_device_stats *bnad_get_netdev_stats(struct net_device *netdev); 388 int bnad_mac_addr_set_locked(struct bnad *bnad, u8 *mac_addr); 389 int bnad_enable_default_bcast(struct bnad *bnad); 390 void bnad_restore_vlans(struct bnad *bnad, u32 rx_id); 391 void bnad_set_ethtool_ops(struct net_device *netdev); 392 void bnad_cb_completion(void *arg, enum bfa_status status); 393 394 /* Configuration & setup */ 395 void bnad_tx_coalescing_timeo_set(struct bnad *bnad); 396 void bnad_rx_coalescing_timeo_set(struct bnad *bnad); 397 398 int bnad_setup_rx(struct bnad *bnad, u32 rx_id); 399 int bnad_setup_tx(struct bnad *bnad, u32 tx_id); 400 void bnad_destroy_tx(struct bnad *bnad, u32 tx_id); 401 void bnad_destroy_rx(struct bnad *bnad, u32 rx_id); 402 403 /* Timer start/stop protos */ 404 void bnad_dim_timer_start(struct bnad *bnad); 405 406 /* Statistics */ 407 void bnad_netdev_qstats_fill(struct bnad *bnad, 408 struct rtnl_link_stats64 *stats); 409 void bnad_netdev_hwstats_fill(struct bnad *bnad, 410 struct rtnl_link_stats64 *stats); 411 412 /* Debugfs */ 413 void bnad_debugfs_init(struct bnad *bnad); 414 void bnad_debugfs_uninit(struct bnad *bnad); 415 416 /* MACROS */ 417 /* To set & get the stats counters */ 418 #define BNAD_UPDATE_CTR(_bnad, _ctr) \ 419 (((_bnad)->stats.drv_stats._ctr)++) 420 421 #define BNAD_GET_CTR(_bnad, _ctr) ((_bnad)->stats.drv_stats._ctr) 422 423 #define bnad_enable_rx_irq_unsafe(_ccb) \ 424 { \ 425 if (likely(test_bit(BNAD_RXQ_STARTED, &(_ccb)->rcb[0]->flags))) {\ 426 bna_ib_coalescing_timer_set((_ccb)->i_dbell, \ 427 (_ccb)->rx_coalescing_timeo); \ 428 bna_ib_ack((_ccb)->i_dbell, 0); \ 429 } \ 430 } 431 432 #endif /* __BNAD_H__ */ 433