1 #ifndef _BNX2FC_H_ 2 #define _BNX2FC_H_ 3 /* bnx2fc.h: Broadcom NetXtreme II Linux FCoE offload driver. 4 * 5 * Copyright (c) 2008 - 2010 Broadcom Corporation 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation. 10 * 11 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com) 12 */ 13 14 #include <linux/module.h> 15 #include <linux/moduleparam.h> 16 #include <linux/kernel.h> 17 #include <linux/skbuff.h> 18 #include <linux/netdevice.h> 19 #include <linux/etherdevice.h> 20 #include <linux/if_ether.h> 21 #include <linux/if_vlan.h> 22 #include <linux/kthread.h> 23 #include <linux/crc32.h> 24 #include <linux/cpu.h> 25 #include <linux/types.h> 26 #include <linux/list.h> 27 #include <linux/delay.h> 28 #include <linux/timer.h> 29 #include <linux/errno.h> 30 #include <linux/pci.h> 31 #include <linux/init.h> 32 #include <linux/dma-mapping.h> 33 #include <linux/workqueue.h> 34 #include <linux/mutex.h> 35 #include <linux/spinlock.h> 36 #include <linux/bitops.h> 37 #include <linux/log2.h> 38 #include <linux/interrupt.h> 39 #include <linux/sched.h> 40 #include <linux/io.h> 41 42 #include <scsi/scsi.h> 43 #include <scsi/scsi_host.h> 44 #include <scsi/scsi_device.h> 45 #include <scsi/scsi_cmnd.h> 46 #include <scsi/scsi_eh.h> 47 #include <scsi/scsi_tcq.h> 48 #include <scsi/libfc.h> 49 #include <scsi/libfcoe.h> 50 #include <scsi/fc_encode.h> 51 #include <scsi/scsi_transport.h> 52 #include <scsi/scsi_transport_fc.h> 53 #include <scsi/fc/fc_fip.h> 54 #include <scsi/fc/fc_fc2.h> 55 #include <scsi/fc_frame.h> 56 #include <scsi/fc/fc_fcoe.h> 57 #include <scsi/fc/fc_fcp.h> 58 59 #include "57xx_hsi_bnx2fc.h" 60 #include "bnx2fc_debug.h" 61 #include "../../net/cnic_if.h" 62 #include "bnx2fc_constants.h" 63 64 #define BNX2FC_NAME "bnx2fc" 65 #define BNX2FC_VERSION "1.0.1" 66 67 #define PFX "bnx2fc: " 68 69 #define BNX2X_DOORBELL_PCI_BAR 2 70 71 #define BNX2FC_MAX_BD_LEN 0xffff 72 #define BNX2FC_BD_SPLIT_SZ 0x8000 73 #define BNX2FC_MAX_BDS_PER_CMD 256 74 75 #define BNX2FC_SQ_WQES_MAX 256 76 77 #define BNX2FC_SCSI_MAX_SQES ((3 * BNX2FC_SQ_WQES_MAX) / 8) 78 #define BNX2FC_TM_MAX_SQES ((BNX2FC_SQ_WQES_MAX) / 2) 79 #define BNX2FC_ELS_MAX_SQES (BNX2FC_TM_MAX_SQES - 1) 80 81 #define BNX2FC_RQ_WQES_MAX 16 82 #define BNX2FC_CQ_WQES_MAX (BNX2FC_SQ_WQES_MAX + BNX2FC_RQ_WQES_MAX) 83 84 #define BNX2FC_NUM_MAX_SESS 128 85 #define BNX2FC_NUM_MAX_SESS_LOG (ilog2(BNX2FC_NUM_MAX_SESS)) 86 87 #define BNX2FC_MAX_OUTSTANDING_CMNDS 2048 88 #define BNX2FC_CAN_QUEUE BNX2FC_MAX_OUTSTANDING_CMNDS 89 #define BNX2FC_ELSTM_XIDS BNX2FC_CAN_QUEUE 90 #define BNX2FC_MIN_PAYLOAD 256 91 #define BNX2FC_MAX_PAYLOAD 2048 92 #define BNX2FC_MFS \ 93 (BNX2FC_MAX_PAYLOAD + sizeof(struct fc_frame_header)) 94 #define BNX2FC_MINI_JUMBO_MTU 2500 95 96 97 #define BNX2FC_RQ_BUF_SZ 256 98 #define BNX2FC_RQ_BUF_LOG_SZ (ilog2(BNX2FC_RQ_BUF_SZ)) 99 100 #define BNX2FC_SQ_WQE_SIZE (sizeof(struct fcoe_sqe)) 101 #define BNX2FC_CQ_WQE_SIZE (sizeof(struct fcoe_cqe)) 102 #define BNX2FC_RQ_WQE_SIZE (BNX2FC_RQ_BUF_SZ) 103 #define BNX2FC_XFERQ_WQE_SIZE (sizeof(struct fcoe_xfrqe)) 104 #define BNX2FC_CONFQ_WQE_SIZE (sizeof(struct fcoe_confqe)) 105 #define BNX2FC_5771X_DB_PAGE_SIZE 128 106 107 #define BNX2FC_MAX_TASKS \ 108 (BNX2FC_MAX_OUTSTANDING_CMNDS + BNX2FC_ELSTM_XIDS) 109 #define BNX2FC_TASK_SIZE 128 110 #define BNX2FC_TASKS_PER_PAGE (PAGE_SIZE/BNX2FC_TASK_SIZE) 111 #define BNX2FC_TASK_CTX_ARR_SZ (BNX2FC_MAX_TASKS/BNX2FC_TASKS_PER_PAGE) 112 113 #define BNX2FC_MAX_ROWS_IN_HASH_TBL 8 114 #define BNX2FC_HASH_TBL_CHUNK_SIZE (16 * 1024) 115 116 #define BNX2FC_MAX_SEQS 255 117 118 #define BNX2FC_READ (1 << 1) 119 #define BNX2FC_WRITE (1 << 0) 120 121 #define BNX2FC_MIN_XID 0 122 #define BNX2FC_MAX_XID \ 123 (BNX2FC_MAX_OUTSTANDING_CMNDS + BNX2FC_ELSTM_XIDS - 1) 124 #define FCOE_MIN_XID (BNX2FC_MAX_XID + 1) 125 #define FCOE_MAX_XID (FCOE_MIN_XID + 4095) 126 #define BNX2FC_MAX_LUN 0xFFFF 127 #define BNX2FC_MAX_FCP_TGT 256 128 #define BNX2FC_MAX_CMD_LEN 16 129 130 #define BNX2FC_TM_TIMEOUT 60 /* secs */ 131 #define BNX2FC_IO_TIMEOUT 20000UL /* msecs */ 132 133 #define BNX2FC_WAIT_CNT 1200 134 #define BNX2FC_FW_TIMEOUT (3 * HZ) 135 #define PORT_MAX 2 136 137 #define CMD_SCSI_STATUS(Cmnd) ((Cmnd)->SCp.Status) 138 139 /* FC FCP Status */ 140 #define FC_GOOD 0 141 142 #define BNX2FC_RNID_HBA 0x7 143 144 /* bnx2fc driver uses only one instance of fcoe_percpu_s */ 145 extern struct fcoe_percpu_s bnx2fc_global; 146 147 extern struct workqueue_struct *bnx2fc_wq; 148 149 struct bnx2fc_percpu_s { 150 struct task_struct *iothread; 151 struct list_head work_list; 152 spinlock_t fp_work_lock; 153 }; 154 155 156 struct bnx2fc_hba { 157 struct list_head link; 158 struct cnic_dev *cnic; 159 struct pci_dev *pcidev; 160 struct net_device *netdev; 161 struct net_device *phys_dev; 162 unsigned long reg_with_cnic; 163 #define BNX2FC_CNIC_REGISTERED 1 164 struct packet_type fcoe_packet_type; 165 struct packet_type fip_packet_type; 166 struct bnx2fc_cmd_mgr *cmd_mgr; 167 struct workqueue_struct *timer_work_queue; 168 struct kref kref; 169 spinlock_t hba_lock; 170 struct mutex hba_mutex; 171 unsigned long adapter_state; 172 #define ADAPTER_STATE_UP 0 173 #define ADAPTER_STATE_GOING_DOWN 1 174 #define ADAPTER_STATE_LINK_DOWN 2 175 #define ADAPTER_STATE_READY 3 176 u32 flags; 177 unsigned long init_done; 178 #define BNX2FC_FW_INIT_DONE 0 179 #define BNX2FC_CTLR_INIT_DONE 1 180 #define BNX2FC_CREATE_DONE 2 181 struct fcoe_ctlr ctlr; 182 u8 vlan_enabled; 183 int vlan_id; 184 u32 next_conn_id; 185 struct fcoe_task_ctx_entry **task_ctx; 186 dma_addr_t *task_ctx_dma; 187 struct regpair *task_ctx_bd_tbl; 188 dma_addr_t task_ctx_bd_dma; 189 190 int hash_tbl_segment_count; 191 void **hash_tbl_segments; 192 void *hash_tbl_pbl; 193 dma_addr_t hash_tbl_pbl_dma; 194 struct fcoe_t2_hash_table_entry *t2_hash_tbl; 195 dma_addr_t t2_hash_tbl_dma; 196 char *t2_hash_tbl_ptr; 197 dma_addr_t t2_hash_tbl_ptr_dma; 198 199 char *dummy_buffer; 200 dma_addr_t dummy_buf_dma; 201 202 struct fcoe_statistics_params *stats_buffer; 203 dma_addr_t stats_buf_dma; 204 205 /* 206 * PCI related info. 207 */ 208 u16 pci_did; 209 u16 pci_vid; 210 u16 pci_sdid; 211 u16 pci_svid; 212 u16 pci_func; 213 u16 pci_devno; 214 215 struct task_struct *l2_thread; 216 217 /* linkdown handling */ 218 wait_queue_head_t shutdown_wait; 219 int wait_for_link_down; 220 221 /*destroy handling */ 222 struct timer_list destroy_timer; 223 wait_queue_head_t destroy_wait; 224 225 /* Active list of offloaded sessions */ 226 struct bnx2fc_rport *tgt_ofld_list[BNX2FC_NUM_MAX_SESS]; 227 int num_ofld_sess; 228 229 /* statistics */ 230 struct completion stat_req_done; 231 }; 232 233 #define bnx2fc_from_ctlr(fip) container_of(fip, struct bnx2fc_hba, ctlr) 234 235 struct bnx2fc_cmd_mgr { 236 struct bnx2fc_hba *hba; 237 u16 next_idx; 238 struct list_head *free_list; 239 spinlock_t *free_list_lock; 240 struct io_bdt **io_bdt_pool; 241 struct bnx2fc_cmd **cmds; 242 }; 243 244 struct bnx2fc_rport { 245 struct fcoe_port *port; 246 struct fc_rport *rport; 247 struct fc_rport_priv *rdata; 248 void __iomem *ctx_base; 249 #define DPM_TRIGER_TYPE 0x40 250 u32 fcoe_conn_id; 251 u32 context_id; 252 u32 sid; 253 254 unsigned long flags; 255 #define BNX2FC_FLAG_SESSION_READY 0x1 256 #define BNX2FC_FLAG_OFFLOADED 0x2 257 #define BNX2FC_FLAG_DISABLED 0x3 258 #define BNX2FC_FLAG_DESTROYED 0x4 259 #define BNX2FC_FLAG_OFLD_REQ_CMPL 0x5 260 #define BNX2FC_FLAG_DESTROY_CMPL 0x6 261 #define BNX2FC_FLAG_CTX_ALLOC_FAILURE 0x7 262 #define BNX2FC_FLAG_UPLD_REQ_COMPL 0x8 263 #define BNX2FC_FLAG_EXPL_LOGO 0x9 264 265 u32 max_sqes; 266 u32 max_rqes; 267 u32 max_cqes; 268 269 struct fcoe_sqe *sq; 270 dma_addr_t sq_dma; 271 u16 sq_prod_idx; 272 u8 sq_curr_toggle_bit; 273 u32 sq_mem_size; 274 275 struct fcoe_cqe *cq; 276 dma_addr_t cq_dma; 277 u32 cq_cons_idx; 278 u8 cq_curr_toggle_bit; 279 u32 cq_mem_size; 280 281 void *rq; 282 dma_addr_t rq_dma; 283 u32 rq_prod_idx; 284 u32 rq_cons_idx; 285 u32 rq_mem_size; 286 287 void *rq_pbl; 288 dma_addr_t rq_pbl_dma; 289 u32 rq_pbl_size; 290 291 struct fcoe_xfrqe *xferq; 292 dma_addr_t xferq_dma; 293 u32 xferq_mem_size; 294 295 struct fcoe_confqe *confq; 296 dma_addr_t confq_dma; 297 u32 confq_mem_size; 298 299 void *confq_pbl; 300 dma_addr_t confq_pbl_dma; 301 u32 confq_pbl_size; 302 303 struct fcoe_conn_db *conn_db; 304 dma_addr_t conn_db_dma; 305 u32 conn_db_mem_size; 306 307 struct fcoe_sqe *lcq; 308 dma_addr_t lcq_dma; 309 u32 lcq_mem_size; 310 311 void *ofld_req[4]; 312 dma_addr_t ofld_req_dma[4]; 313 void *enbl_req; 314 dma_addr_t enbl_req_dma; 315 316 spinlock_t tgt_lock; 317 spinlock_t cq_lock; 318 atomic_t num_active_ios; 319 u32 flush_in_prog; 320 unsigned long work_time_slice; 321 unsigned long timestamp; 322 struct list_head free_task_list; 323 struct bnx2fc_cmd *pending_queue[BNX2FC_SQ_WQES_MAX+1]; 324 atomic_t pi; 325 atomic_t ci; 326 struct list_head active_cmd_queue; 327 struct list_head els_queue; 328 struct list_head io_retire_queue; 329 struct list_head active_tm_queue; 330 331 struct timer_list ofld_timer; 332 wait_queue_head_t ofld_wait; 333 334 struct timer_list upld_timer; 335 wait_queue_head_t upld_wait; 336 }; 337 338 struct bnx2fc_mp_req { 339 u8 tm_flags; 340 341 u32 req_len; 342 void *req_buf; 343 dma_addr_t req_buf_dma; 344 struct fcoe_bd_ctx *mp_req_bd; 345 dma_addr_t mp_req_bd_dma; 346 struct fc_frame_header req_fc_hdr; 347 348 u32 resp_len; 349 void *resp_buf; 350 dma_addr_t resp_buf_dma; 351 struct fcoe_bd_ctx *mp_resp_bd; 352 dma_addr_t mp_resp_bd_dma; 353 struct fc_frame_header resp_fc_hdr; 354 }; 355 356 struct bnx2fc_els_cb_arg { 357 struct bnx2fc_cmd *aborted_io_req; 358 struct bnx2fc_cmd *io_req; 359 u16 l2_oxid; 360 }; 361 362 /* bnx2fc command structure */ 363 struct bnx2fc_cmd { 364 struct list_head link; 365 u8 on_active_queue; 366 u8 on_tmf_queue; 367 u8 cmd_type; 368 #define BNX2FC_SCSI_CMD 1 369 #define BNX2FC_TASK_MGMT_CMD 2 370 #define BNX2FC_ABTS 3 371 #define BNX2FC_ELS 4 372 #define BNX2FC_CLEANUP 5 373 u8 io_req_flags; 374 struct kref refcount; 375 struct fcoe_port *port; 376 struct bnx2fc_rport *tgt; 377 struct scsi_cmnd *sc_cmd; 378 struct bnx2fc_cmd_mgr *cmd_mgr; 379 struct bnx2fc_mp_req mp_req; 380 void (*cb_func)(struct bnx2fc_els_cb_arg *cb_arg); 381 struct bnx2fc_els_cb_arg *cb_arg; 382 struct delayed_work timeout_work; /* timer for ULP timeouts */ 383 struct completion tm_done; 384 int wait_for_comp; 385 u16 xid; 386 struct fcoe_task_ctx_entry *task; 387 struct io_bdt *bd_tbl; 388 struct fcp_rsp *rsp; 389 size_t data_xfer_len; 390 unsigned long req_flags; 391 #define BNX2FC_FLAG_ISSUE_RRQ 0x1 392 #define BNX2FC_FLAG_ISSUE_ABTS 0x2 393 #define BNX2FC_FLAG_ABTS_DONE 0x3 394 #define BNX2FC_FLAG_TM_COMPL 0x4 395 #define BNX2FC_FLAG_TM_TIMEOUT 0x5 396 #define BNX2FC_FLAG_IO_CLEANUP 0x6 397 #define BNX2FC_FLAG_RETIRE_OXID 0x7 398 #define BNX2FC_FLAG_EH_ABORT 0x8 399 #define BNX2FC_FLAG_IO_COMPL 0x9 400 #define BNX2FC_FLAG_ELS_DONE 0xa 401 #define BNX2FC_FLAG_ELS_TIMEOUT 0xb 402 u32 fcp_resid; 403 u32 fcp_rsp_len; 404 u32 fcp_sns_len; 405 u8 cdb_status; /* SCSI IO status */ 406 u8 fcp_status; /* FCP IO status */ 407 u8 fcp_rsp_code; 408 u8 scsi_comp_flags; 409 }; 410 411 struct io_bdt { 412 struct bnx2fc_cmd *io_req; 413 struct fcoe_bd_ctx *bd_tbl; 414 dma_addr_t bd_tbl_dma; 415 u16 bd_valid; 416 }; 417 418 struct bnx2fc_work { 419 struct list_head list; 420 struct bnx2fc_rport *tgt; 421 u16 wqe; 422 }; 423 struct bnx2fc_unsol_els { 424 struct fc_lport *lport; 425 struct fc_frame *fp; 426 struct work_struct unsol_els_work; 427 }; 428 429 430 431 struct bnx2fc_cmd *bnx2fc_elstm_alloc(struct bnx2fc_rport *tgt, int type); 432 void bnx2fc_cmd_release(struct kref *ref); 433 int bnx2fc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc_cmd); 434 int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba); 435 int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba); 436 int bnx2fc_send_session_ofld_req(struct fcoe_port *port, 437 struct bnx2fc_rport *tgt); 438 int bnx2fc_send_session_disable_req(struct fcoe_port *port, 439 struct bnx2fc_rport *tgt); 440 int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba, 441 struct bnx2fc_rport *tgt); 442 int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt); 443 void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[], 444 u32 num_cqe); 445 int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba); 446 void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba); 447 int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba); 448 void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba); 449 struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba, 450 u16 min_xid, u16 max_xid); 451 void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr *cmgr); 452 void bnx2fc_get_link_state(struct bnx2fc_hba *hba); 453 char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items); 454 void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items); 455 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen); 456 int bnx2fc_send_rrq(struct bnx2fc_cmd *aborted_io_req); 457 int bnx2fc_send_adisc(struct bnx2fc_rport *tgt, struct fc_frame *fp); 458 int bnx2fc_send_logo(struct bnx2fc_rport *tgt, struct fc_frame *fp); 459 int bnx2fc_send_rls(struct bnx2fc_rport *tgt, struct fc_frame *fp); 460 int bnx2fc_initiate_cleanup(struct bnx2fc_cmd *io_req); 461 int bnx2fc_initiate_abts(struct bnx2fc_cmd *io_req); 462 void bnx2fc_cmd_timer_set(struct bnx2fc_cmd *io_req, 463 unsigned int timer_msec); 464 int bnx2fc_init_mp_req(struct bnx2fc_cmd *io_req); 465 void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req, 466 struct fcoe_task_ctx_entry *task, 467 u16 orig_xid); 468 void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req, 469 struct fcoe_task_ctx_entry *task); 470 void bnx2fc_init_task(struct bnx2fc_cmd *io_req, 471 struct fcoe_task_ctx_entry *task); 472 void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid); 473 void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt); 474 int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd); 475 int bnx2fc_eh_host_reset(struct scsi_cmnd *sc_cmd); 476 int bnx2fc_eh_target_reset(struct scsi_cmnd *sc_cmd); 477 int bnx2fc_eh_device_reset(struct scsi_cmnd *sc_cmd); 478 void bnx2fc_rport_event_handler(struct fc_lport *lport, 479 struct fc_rport_priv *rport, 480 enum fc_rport_event event); 481 void bnx2fc_process_scsi_cmd_compl(struct bnx2fc_cmd *io_req, 482 struct fcoe_task_ctx_entry *task, 483 u8 num_rq); 484 void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd *io_req, 485 struct fcoe_task_ctx_entry *task, 486 u8 num_rq); 487 void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req, 488 struct fcoe_task_ctx_entry *task, 489 u8 num_rq); 490 void bnx2fc_process_tm_compl(struct bnx2fc_cmd *io_req, 491 struct fcoe_task_ctx_entry *task, 492 u8 num_rq); 493 void bnx2fc_process_els_compl(struct bnx2fc_cmd *els_req, 494 struct fcoe_task_ctx_entry *task, 495 u8 num_rq); 496 void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd *io_req, 497 struct fcp_cmnd *fcp_cmnd); 498 499 500 501 void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt); 502 struct fc_seq *bnx2fc_elsct_send(struct fc_lport *lport, u32 did, 503 struct fc_frame *fp, unsigned int op, 504 void (*resp)(struct fc_seq *, 505 struct fc_frame *, 506 void *), 507 void *arg, u32 timeout); 508 int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt); 509 void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe); 510 struct bnx2fc_rport *bnx2fc_tgt_lookup(struct fcoe_port *port, 511 u32 port_id); 512 void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt, 513 unsigned char *buf, 514 u32 frame_len, u16 l2_oxid); 515 int bnx2fc_send_stat_req(struct bnx2fc_hba *hba); 516 517 #endif 518