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 "1.0.0" 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 4096 88 #define BNX2FC_MIN_PAYLOAD 256 89 #define BNX2FC_MAX_PAYLOAD 2048 90 91 #define BNX2FC_RQ_BUF_SZ 256 92 #define BNX2FC_RQ_BUF_LOG_SZ (ilog2(BNX2FC_RQ_BUF_SZ)) 93 94 #define BNX2FC_SQ_WQE_SIZE (sizeof(struct fcoe_sqe)) 95 #define BNX2FC_CQ_WQE_SIZE (sizeof(struct fcoe_cqe)) 96 #define BNX2FC_RQ_WQE_SIZE (BNX2FC_RQ_BUF_SZ) 97 #define BNX2FC_XFERQ_WQE_SIZE (sizeof(struct fcoe_xfrqe)) 98 #define BNX2FC_CONFQ_WQE_SIZE (sizeof(struct fcoe_confqe)) 99 #define BNX2FC_5771X_DB_PAGE_SIZE 128 100 101 #define BNX2FC_MAX_TASKS BNX2FC_MAX_OUTSTANDING_CMNDS 102 #define BNX2FC_TASK_SIZE 128 103 #define BNX2FC_TASKS_PER_PAGE (PAGE_SIZE/BNX2FC_TASK_SIZE) 104 #define BNX2FC_TASK_CTX_ARR_SZ (BNX2FC_MAX_TASKS/BNX2FC_TASKS_PER_PAGE) 105 106 #define BNX2FC_MAX_ROWS_IN_HASH_TBL 8 107 #define BNX2FC_HASH_TBL_CHUNK_SIZE (16 * 1024) 108 109 #define BNX2FC_MAX_SEQS 255 110 111 #define BNX2FC_READ (1 << 1) 112 #define BNX2FC_WRITE (1 << 0) 113 114 #define BNX2FC_MIN_XID 0 115 #define BNX2FC_MAX_XID (BNX2FC_MAX_OUTSTANDING_CMNDS - 1) 116 #define FCOE_MIN_XID (BNX2FC_MAX_OUTSTANDING_CMNDS) 117 #define FCOE_MAX_XID \ 118 (BNX2FC_MAX_OUTSTANDING_CMNDS + (nr_cpu_ids * 256)) 119 #define BNX2FC_MAX_LUN 0xFFFF 120 #define BNX2FC_MAX_FCP_TGT 256 121 #define BNX2FC_MAX_CMD_LEN 16 122 123 #define BNX2FC_TM_TIMEOUT 60 /* secs */ 124 #define BNX2FC_IO_TIMEOUT 20000UL /* msecs */ 125 126 #define BNX2FC_WAIT_CNT 120 127 #define BNX2FC_FW_TIMEOUT (3 * HZ) 128 129 #define PORT_MAX 2 130 131 #define CMD_SCSI_STATUS(Cmnd) ((Cmnd)->SCp.Status) 132 133 /* FC FCP Status */ 134 #define FC_GOOD 0 135 136 #define BNX2FC_RNID_HBA 0x7 137 138 /* bnx2fc driver uses only one instance of fcoe_percpu_s */ 139 extern struct fcoe_percpu_s bnx2fc_global; 140 141 extern struct workqueue_struct *bnx2fc_wq; 142 143 struct bnx2fc_percpu_s { 144 struct task_struct *iothread; 145 struct list_head work_list; 146 spinlock_t fp_work_lock; 147 }; 148 149 150 struct bnx2fc_hba { 151 struct list_head link; 152 struct cnic_dev *cnic; 153 struct pci_dev *pcidev; 154 struct net_device *netdev; 155 struct net_device *phys_dev; 156 unsigned long reg_with_cnic; 157 #define BNX2FC_CNIC_REGISTERED 1 158 struct packet_type fcoe_packet_type; 159 struct packet_type fip_packet_type; 160 struct bnx2fc_cmd_mgr *cmd_mgr; 161 struct workqueue_struct *timer_work_queue; 162 struct kref kref; 163 spinlock_t hba_lock; 164 struct mutex hba_mutex; 165 unsigned long adapter_state; 166 #define ADAPTER_STATE_UP 0 167 #define ADAPTER_STATE_GOING_DOWN 1 168 #define ADAPTER_STATE_LINK_DOWN 2 169 #define ADAPTER_STATE_READY 3 170 u32 flags; 171 unsigned long init_done; 172 #define BNX2FC_FW_INIT_DONE 0 173 #define BNX2FC_CTLR_INIT_DONE 1 174 #define BNX2FC_CREATE_DONE 2 175 struct fcoe_ctlr ctlr; 176 u8 vlan_enabled; 177 int vlan_id; 178 u32 next_conn_id; 179 struct fcoe_task_ctx_entry **task_ctx; 180 dma_addr_t *task_ctx_dma; 181 struct regpair *task_ctx_bd_tbl; 182 dma_addr_t task_ctx_bd_dma; 183 184 int hash_tbl_segment_count; 185 void **hash_tbl_segments; 186 void *hash_tbl_pbl; 187 dma_addr_t hash_tbl_pbl_dma; 188 struct fcoe_t2_hash_table_entry *t2_hash_tbl; 189 dma_addr_t t2_hash_tbl_dma; 190 char *t2_hash_tbl_ptr; 191 dma_addr_t t2_hash_tbl_ptr_dma; 192 193 char *dummy_buffer; 194 dma_addr_t dummy_buf_dma; 195 196 struct fcoe_statistics_params *stats_buffer; 197 dma_addr_t stats_buf_dma; 198 199 /* 200 * PCI related info. 201 */ 202 u16 pci_did; 203 u16 pci_vid; 204 u16 pci_sdid; 205 u16 pci_svid; 206 u16 pci_func; 207 u16 pci_devno; 208 209 struct task_struct *l2_thread; 210 211 /* linkdown handling */ 212 wait_queue_head_t shutdown_wait; 213 int wait_for_link_down; 214 215 /*destroy handling */ 216 struct timer_list destroy_timer; 217 wait_queue_head_t destroy_wait; 218 219 /* Active list of offloaded sessions */ 220 struct bnx2fc_rport *tgt_ofld_list[BNX2FC_NUM_MAX_SESS]; 221 int num_ofld_sess; 222 223 /* statistics */ 224 struct completion stat_req_done; 225 }; 226 227 #define bnx2fc_from_ctlr(fip) container_of(fip, struct bnx2fc_hba, ctlr) 228 229 struct bnx2fc_cmd_mgr { 230 struct bnx2fc_hba *hba; 231 u16 next_idx; 232 struct list_head *free_list; 233 spinlock_t *free_list_lock; 234 struct io_bdt **io_bdt_pool; 235 struct bnx2fc_cmd **cmds; 236 }; 237 238 struct bnx2fc_rport { 239 struct fcoe_port *port; 240 struct fc_rport *rport; 241 struct fc_rport_priv *rdata; 242 void __iomem *ctx_base; 243 #define DPM_TRIGER_TYPE 0x40 244 u32 fcoe_conn_id; 245 u32 context_id; 246 u32 sid; 247 248 unsigned long flags; 249 #define BNX2FC_FLAG_SESSION_READY 0x1 250 #define BNX2FC_FLAG_OFFLOADED 0x2 251 #define BNX2FC_FLAG_DISABLED 0x3 252 #define BNX2FC_FLAG_DESTROYED 0x4 253 #define BNX2FC_FLAG_OFLD_REQ_CMPL 0x5 254 #define BNX2FC_FLAG_DESTROY_CMPL 0x6 255 #define BNX2FC_FLAG_CTX_ALLOC_FAILURE 0x7 256 #define BNX2FC_FLAG_UPLD_REQ_COMPL 0x8 257 #define BNX2FC_FLAG_EXPL_LOGO 0x9 258 259 u32 max_sqes; 260 u32 max_rqes; 261 u32 max_cqes; 262 263 struct fcoe_sqe *sq; 264 dma_addr_t sq_dma; 265 u16 sq_prod_idx; 266 u8 sq_curr_toggle_bit; 267 u32 sq_mem_size; 268 269 struct fcoe_cqe *cq; 270 dma_addr_t cq_dma; 271 u32 cq_cons_idx; 272 u8 cq_curr_toggle_bit; 273 u32 cq_mem_size; 274 275 void *rq; 276 dma_addr_t rq_dma; 277 u32 rq_prod_idx; 278 u32 rq_cons_idx; 279 u32 rq_mem_size; 280 281 void *rq_pbl; 282 dma_addr_t rq_pbl_dma; 283 u32 rq_pbl_size; 284 285 struct fcoe_xfrqe *xferq; 286 dma_addr_t xferq_dma; 287 u32 xferq_mem_size; 288 289 struct fcoe_confqe *confq; 290 dma_addr_t confq_dma; 291 u32 confq_mem_size; 292 293 void *confq_pbl; 294 dma_addr_t confq_pbl_dma; 295 u32 confq_pbl_size; 296 297 struct fcoe_conn_db *conn_db; 298 dma_addr_t conn_db_dma; 299 u32 conn_db_mem_size; 300 301 struct fcoe_sqe *lcq; 302 dma_addr_t lcq_dma; 303 u32 lcq_mem_size; 304 305 void *ofld_req[4]; 306 dma_addr_t ofld_req_dma[4]; 307 void *enbl_req; 308 dma_addr_t enbl_req_dma; 309 310 spinlock_t tgt_lock; 311 spinlock_t cq_lock; 312 atomic_t num_active_ios; 313 u32 flush_in_prog; 314 unsigned long work_time_slice; 315 unsigned long timestamp; 316 struct list_head free_task_list; 317 struct bnx2fc_cmd *pending_queue[BNX2FC_SQ_WQES_MAX+1]; 318 atomic_t pi; 319 atomic_t ci; 320 struct list_head active_cmd_queue; 321 struct list_head els_queue; 322 struct list_head io_retire_queue; 323 struct list_head active_tm_queue; 324 325 struct timer_list ofld_timer; 326 wait_queue_head_t ofld_wait; 327 328 struct timer_list upld_timer; 329 wait_queue_head_t upld_wait; 330 }; 331 332 struct bnx2fc_mp_req { 333 u8 tm_flags; 334 335 u32 req_len; 336 void *req_buf; 337 dma_addr_t req_buf_dma; 338 struct fcoe_bd_ctx *mp_req_bd; 339 dma_addr_t mp_req_bd_dma; 340 struct fc_frame_header req_fc_hdr; 341 342 u32 resp_len; 343 void *resp_buf; 344 dma_addr_t resp_buf_dma; 345 struct fcoe_bd_ctx *mp_resp_bd; 346 dma_addr_t mp_resp_bd_dma; 347 struct fc_frame_header resp_fc_hdr; 348 }; 349 350 struct bnx2fc_els_cb_arg { 351 struct bnx2fc_cmd *aborted_io_req; 352 struct bnx2fc_cmd *io_req; 353 u16 l2_oxid; 354 }; 355 356 /* bnx2fc command structure */ 357 struct bnx2fc_cmd { 358 struct list_head link; 359 u8 on_active_queue; 360 u8 on_tmf_queue; 361 u8 cmd_type; 362 #define BNX2FC_SCSI_CMD 1 363 #define BNX2FC_TASK_MGMT_CMD 2 364 #define BNX2FC_ABTS 3 365 #define BNX2FC_ELS 4 366 #define BNX2FC_CLEANUP 5 367 u8 io_req_flags; 368 struct kref refcount; 369 struct fcoe_port *port; 370 struct bnx2fc_rport *tgt; 371 struct scsi_cmnd *sc_cmd; 372 struct bnx2fc_cmd_mgr *cmd_mgr; 373 struct bnx2fc_mp_req mp_req; 374 void (*cb_func)(struct bnx2fc_els_cb_arg *cb_arg); 375 struct bnx2fc_els_cb_arg *cb_arg; 376 struct delayed_work timeout_work; /* timer for ULP timeouts */ 377 struct completion tm_done; 378 int wait_for_comp; 379 u16 xid; 380 struct fcoe_task_ctx_entry *task; 381 struct io_bdt *bd_tbl; 382 struct fcp_rsp *rsp; 383 size_t data_xfer_len; 384 unsigned long req_flags; 385 #define BNX2FC_FLAG_ISSUE_RRQ 0x1 386 #define BNX2FC_FLAG_ISSUE_ABTS 0x2 387 #define BNX2FC_FLAG_ABTS_DONE 0x3 388 #define BNX2FC_FLAG_TM_COMPL 0x4 389 #define BNX2FC_FLAG_TM_TIMEOUT 0x5 390 #define BNX2FC_FLAG_IO_CLEANUP 0x6 391 #define BNX2FC_FLAG_RETIRE_OXID 0x7 392 #define BNX2FC_FLAG_EH_ABORT 0x8 393 #define BNX2FC_FLAG_IO_COMPL 0x9 394 #define BNX2FC_FLAG_ELS_DONE 0xa 395 #define BNX2FC_FLAG_ELS_TIMEOUT 0xb 396 u32 fcp_resid; 397 u32 fcp_rsp_len; 398 u32 fcp_sns_len; 399 u8 cdb_status; /* SCSI IO status */ 400 u8 fcp_status; /* FCP IO status */ 401 u8 fcp_rsp_code; 402 u8 scsi_comp_flags; 403 }; 404 405 struct io_bdt { 406 struct bnx2fc_cmd *io_req; 407 struct fcoe_bd_ctx *bd_tbl; 408 dma_addr_t bd_tbl_dma; 409 u16 bd_valid; 410 }; 411 412 struct bnx2fc_work { 413 struct list_head list; 414 struct bnx2fc_rport *tgt; 415 u16 wqe; 416 }; 417 struct bnx2fc_unsol_els { 418 struct fc_lport *lport; 419 struct fc_frame *fp; 420 struct work_struct unsol_els_work; 421 }; 422 423 424 425 struct bnx2fc_cmd *bnx2fc_elstm_alloc(struct bnx2fc_rport *tgt, int type); 426 void bnx2fc_cmd_release(struct kref *ref); 427 int bnx2fc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc_cmd); 428 int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba); 429 int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba); 430 int bnx2fc_send_session_ofld_req(struct fcoe_port *port, 431 struct bnx2fc_rport *tgt); 432 int bnx2fc_send_session_disable_req(struct fcoe_port *port, 433 struct bnx2fc_rport *tgt); 434 int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba, 435 struct bnx2fc_rport *tgt); 436 int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt); 437 void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[], 438 u32 num_cqe); 439 int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba); 440 void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba); 441 int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba); 442 void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba); 443 struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba, 444 u16 min_xid, u16 max_xid); 445 void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr *cmgr); 446 void bnx2fc_get_link_state(struct bnx2fc_hba *hba); 447 char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items); 448 void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items); 449 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen); 450 int bnx2fc_send_rrq(struct bnx2fc_cmd *aborted_io_req); 451 int bnx2fc_send_adisc(struct bnx2fc_rport *tgt, struct fc_frame *fp); 452 int bnx2fc_send_logo(struct bnx2fc_rport *tgt, struct fc_frame *fp); 453 int bnx2fc_send_rls(struct bnx2fc_rport *tgt, struct fc_frame *fp); 454 int bnx2fc_initiate_cleanup(struct bnx2fc_cmd *io_req); 455 int bnx2fc_initiate_abts(struct bnx2fc_cmd *io_req); 456 void bnx2fc_cmd_timer_set(struct bnx2fc_cmd *io_req, 457 unsigned int timer_msec); 458 int bnx2fc_init_mp_req(struct bnx2fc_cmd *io_req); 459 void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req, 460 struct fcoe_task_ctx_entry *task, 461 u16 orig_xid); 462 void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req, 463 struct fcoe_task_ctx_entry *task); 464 void bnx2fc_init_task(struct bnx2fc_cmd *io_req, 465 struct fcoe_task_ctx_entry *task); 466 void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid); 467 void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt); 468 int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd); 469 int bnx2fc_eh_host_reset(struct scsi_cmnd *sc_cmd); 470 int bnx2fc_eh_target_reset(struct scsi_cmnd *sc_cmd); 471 int bnx2fc_eh_device_reset(struct scsi_cmnd *sc_cmd); 472 void bnx2fc_rport_event_handler(struct fc_lport *lport, 473 struct fc_rport_priv *rport, 474 enum fc_rport_event event); 475 void bnx2fc_process_scsi_cmd_compl(struct bnx2fc_cmd *io_req, 476 struct fcoe_task_ctx_entry *task, 477 u8 num_rq); 478 void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd *io_req, 479 struct fcoe_task_ctx_entry *task, 480 u8 num_rq); 481 void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req, 482 struct fcoe_task_ctx_entry *task, 483 u8 num_rq); 484 void bnx2fc_process_tm_compl(struct bnx2fc_cmd *io_req, 485 struct fcoe_task_ctx_entry *task, 486 u8 num_rq); 487 void bnx2fc_process_els_compl(struct bnx2fc_cmd *els_req, 488 struct fcoe_task_ctx_entry *task, 489 u8 num_rq); 490 void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd *io_req, 491 struct fcp_cmnd *fcp_cmnd); 492 493 494 495 void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt); 496 struct fc_seq *bnx2fc_elsct_send(struct fc_lport *lport, u32 did, 497 struct fc_frame *fp, unsigned int op, 498 void (*resp)(struct fc_seq *, 499 struct fc_frame *, 500 void *), 501 void *arg, u32 timeout); 502 int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt); 503 void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe); 504 struct bnx2fc_rport *bnx2fc_tgt_lookup(struct fcoe_port *port, 505 u32 port_id); 506 void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt, 507 unsigned char *buf, 508 u32 frame_len, u16 l2_oxid); 509 int bnx2fc_send_stat_req(struct bnx2fc_hba *hba); 510 511 #endif 512