3 /* bnx2fc.h: Broadcom NetXtreme II Linux FCoE offload driver.
5 * Copyright (c) 2008 - 2011 Broadcom Corporation
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.
11 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
14 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
16 #include <linux/module.h>
17 #include <linux/moduleparam.h>
18 #include <linux/kernel.h>
19 #include <linux/skbuff.h>
20 #include <linux/netdevice.h>
21 #include <linux/etherdevice.h>
22 #include <linux/if_ether.h>
23 #include <linux/if_vlan.h>
24 #include <linux/kthread.h>
25 #include <linux/crc32.h>
26 #include <linux/cpu.h>
27 #include <linux/types.h>
28 #include <linux/list.h>
29 #include <linux/delay.h>
30 #include <linux/timer.h>
31 #include <linux/errno.h>
32 #include <linux/pci.h>
33 #include <linux/init.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/workqueue.h>
36 #include <linux/mutex.h>
37 #include <linux/spinlock.h>
38 #include <linux/bitops.h>
39 #include <linux/log2.h>
40 #include <linux/interrupt.h>
41 #include <linux/sched.h>
44 #include <scsi/scsi.h>
45 #include <scsi/scsi_host.h>
46 #include <scsi/scsi_device.h>
47 #include <scsi/scsi_cmnd.h>
48 #include <scsi/scsi_eh.h>
49 #include <scsi/scsi_tcq.h>
50 #include <scsi/libfc.h>
51 #include <scsi/libfcoe.h>
52 #include <scsi/fc_encode.h>
53 #include <scsi/scsi_transport.h>
54 #include <scsi/scsi_transport_fc.h>
55 #include <scsi/fc/fc_fip.h>
56 #include <scsi/fc/fc_fc2.h>
57 #include <scsi/fc_frame.h>
58 #include <scsi/fc/fc_fcoe.h>
59 #include <scsi/fc/fc_fcp.h>
61 #include "57xx_hsi_bnx2fc.h"
62 #include "../../net/ethernet/broadcom/cnic_if.h"
63 #include "../../net/ethernet/broadcom/bnx2x/bnx2x_mfw_req.h"
64 #include "bnx2fc_constants.h"
66 #define BNX2FC_NAME "bnx2fc"
67 #define BNX2FC_VERSION "1.0.13"
69 #define PFX "bnx2fc: "
71 #define BNX2X_DOORBELL_PCI_BAR 2
73 #define BNX2FC_MAX_BD_LEN 0xffff
74 #define BNX2FC_BD_SPLIT_SZ 0x8000
75 #define BNX2FC_MAX_BDS_PER_CMD 256
77 #define BNX2FC_SQ_WQES_MAX 256
79 #define BNX2FC_SCSI_MAX_SQES ((3 * BNX2FC_SQ_WQES_MAX) / 8)
80 #define BNX2FC_TM_MAX_SQES ((BNX2FC_SQ_WQES_MAX) / 2)
81 #define BNX2FC_ELS_MAX_SQES (BNX2FC_TM_MAX_SQES - 1)
83 #define BNX2FC_RQ_WQES_MAX 16
84 #define BNX2FC_CQ_WQES_MAX (BNX2FC_SQ_WQES_MAX + BNX2FC_RQ_WQES_MAX)
86 #define BNX2FC_NUM_MAX_SESS 1024
87 #define BNX2FC_NUM_MAX_SESS_LOG (ilog2(BNX2FC_NUM_MAX_SESS))
89 #define BNX2FC_MAX_NPIV 256
91 #define BNX2FC_MIN_PAYLOAD 256
92 #define BNX2FC_MAX_PAYLOAD 2048
94 (BNX2FC_MAX_PAYLOAD + sizeof(struct fc_frame_header))
95 #define BNX2FC_MINI_JUMBO_MTU 2500
98 #define BNX2FC_RQ_BUF_SZ 256
99 #define BNX2FC_RQ_BUF_LOG_SZ (ilog2(BNX2FC_RQ_BUF_SZ))
101 #define BNX2FC_SQ_WQE_SIZE (sizeof(struct fcoe_sqe))
102 #define BNX2FC_CQ_WQE_SIZE (sizeof(struct fcoe_cqe))
103 #define BNX2FC_RQ_WQE_SIZE (BNX2FC_RQ_BUF_SZ)
104 #define BNX2FC_XFERQ_WQE_SIZE (sizeof(struct fcoe_xfrqe))
105 #define BNX2FC_CONFQ_WQE_SIZE (sizeof(struct fcoe_confqe))
106 #define BNX2FC_5771X_DB_PAGE_SIZE 128
108 #define BNX2FC_TASK_SIZE 128
109 #define BNX2FC_TASKS_PER_PAGE (PAGE_SIZE/BNX2FC_TASK_SIZE)
111 #define BNX2FC_MAX_ROWS_IN_HASH_TBL 8
112 #define BNX2FC_HASH_TBL_CHUNK_SIZE (16 * 1024)
114 #define BNX2FC_MAX_SEQS 255
115 #define BNX2FC_MAX_RETRY_CNT 3
116 #define BNX2FC_MAX_RPORT_RETRY_CNT 255
118 #define BNX2FC_READ (1 << 1)
119 #define BNX2FC_WRITE (1 << 0)
121 #define BNX2FC_MIN_XID 0
122 #define FCOE_MAX_NUM_XIDS 0x2000
123 #define FCOE_MAX_XID_OFFSET (FCOE_MAX_NUM_XIDS - 1)
124 #define FCOE_XIDS_PER_CPU_OFFSET ((512 * nr_cpu_ids) - 1)
125 #define BNX2FC_MAX_LUN 0xFFFF
126 #define BNX2FC_MAX_FCP_TGT 256
127 #define BNX2FC_MAX_CMD_LEN 16
129 #define BNX2FC_TM_TIMEOUT 60 /* secs */
130 #define BNX2FC_IO_TIMEOUT 20000UL /* msecs */
132 #define BNX2FC_WAIT_CNT 1200
133 #define BNX2FC_FW_TIMEOUT (3 * HZ)
136 #define CMD_SCSI_STATUS(Cmnd) ((Cmnd)->SCp.Status)
141 #define BNX2FC_RNID_HBA 0x7
143 #define SRR_RETRY_COUNT 5
144 #define REC_RETRY_COUNT 1
145 #define BNX2FC_NUM_ERR_BITS 63
147 #define BNX2FC_RELOGIN_WAIT_TIME 200
148 #define BNX2FC_RELOGIN_WAIT_CNT 10
150 #define BNX2FC_STATS(hba, stat, cnt) \
154 val = fw_stats->stat.cnt; \
155 if (hba->prev_stats.stat.cnt <= val) \
156 val -= hba->prev_stats.stat.cnt; \
158 val += (0xfffffff - hba->prev_stats.stat.cnt); \
159 hba->bfw_stats.cnt += val; \
162 /* bnx2fc driver uses only one instance of fcoe_percpu_s */
163 extern struct fcoe_percpu_s bnx2fc_global;
165 extern struct workqueue_struct *bnx2fc_wq;
167 struct bnx2fc_percpu_s {
168 struct task_struct *iothread;
169 struct list_head work_list;
170 spinlock_t fp_work_lock;
173 struct bnx2fc_fw_stats {
177 u64 fcoe_tx_byte_cnt;
178 u64 fcoe_rx_byte_cnt;
182 struct list_head list;
183 struct cnic_dev *cnic;
184 struct pci_dev *pcidev;
185 struct net_device *phys_dev;
186 unsigned long reg_with_cnic;
187 #define BNX2FC_CNIC_REGISTERED 1
188 struct bnx2fc_cmd_mgr *cmd_mgr;
190 struct mutex hba_mutex;
191 unsigned long adapter_state;
192 #define ADAPTER_STATE_UP 0
193 #define ADAPTER_STATE_GOING_DOWN 1
194 #define ADAPTER_STATE_LINK_DOWN 2
195 #define ADAPTER_STATE_READY 3
197 #define BNX2FC_FLAG_FW_INIT_DONE 0
198 #define BNX2FC_FLAG_DESTROY_CMPL 1
204 u32 max_outstanding_cmds;
207 struct fcoe_task_ctx_entry **task_ctx;
208 dma_addr_t *task_ctx_dma;
209 struct regpair *task_ctx_bd_tbl;
210 dma_addr_t task_ctx_bd_dma;
212 int hash_tbl_segment_count;
213 void **hash_tbl_segments;
215 dma_addr_t hash_tbl_pbl_dma;
216 struct fcoe_t2_hash_table_entry *t2_hash_tbl;
217 dma_addr_t t2_hash_tbl_dma;
218 char *t2_hash_tbl_ptr;
219 dma_addr_t t2_hash_tbl_ptr_dma;
222 dma_addr_t dummy_buf_dma;
224 /* Active list of offloaded sessions */
225 struct bnx2fc_rport **tgt_ofld_list;
228 struct bnx2fc_fw_stats bfw_stats;
229 struct fcoe_statistics_params prev_stats;
230 struct fcoe_statistics_params *stats_buffer;
231 dma_addr_t stats_buf_dma;
232 struct completion stat_req_done;
233 struct fcoe_capabilities fcoe_cap;
235 /*destroy handling */
236 struct timer_list destroy_timer;
237 wait_queue_head_t destroy_wait;
239 /* linkdown handling */
240 wait_queue_head_t shutdown_wait;
241 int wait_for_link_down;
243 struct list_head vports;
246 struct bnx2fc_interface {
247 struct list_head list;
248 unsigned long if_flags;
249 #define BNX2FC_CTLR_INIT_DONE 0
250 struct bnx2fc_hba *hba;
251 struct net_device *netdev;
252 struct packet_type fcoe_packet_type;
253 struct packet_type fip_packet_type;
254 struct workqueue_struct *timer_work_queue;
261 #define bnx2fc_from_ctlr(x) \
262 ((struct bnx2fc_interface *)((x) + 1))
264 #define bnx2fc_to_ctlr(x) \
265 ((struct fcoe_ctlr *)(((struct fcoe_ctlr *)(x)) - 1))
267 struct bnx2fc_lport {
268 struct list_head list;
269 struct fc_lport *lport;
272 struct bnx2fc_cmd_mgr {
273 struct bnx2fc_hba *hba;
275 struct list_head *free_list;
276 spinlock_t *free_list_lock;
277 struct io_bdt **io_bdt_pool;
278 struct bnx2fc_cmd **cmds;
281 struct bnx2fc_rport {
282 struct fcoe_port *port;
283 struct fc_rport *rport;
284 struct fc_rport_priv *rdata;
285 void __iomem *ctx_base;
286 #define DPM_TRIGER_TYPE 0x40
294 #define BNX2FC_FLAG_SESSION_READY 0x1
295 #define BNX2FC_FLAG_OFFLOADED 0x2
296 #define BNX2FC_FLAG_DISABLED 0x3
297 #define BNX2FC_FLAG_DESTROYED 0x4
298 #define BNX2FC_FLAG_OFLD_REQ_CMPL 0x5
299 #define BNX2FC_FLAG_CTX_ALLOC_FAILURE 0x6
300 #define BNX2FC_FLAG_UPLD_REQ_COMPL 0x7
301 #define BNX2FC_FLAG_EXPL_LOGO 0x8
302 #define BNX2FC_FLAG_DISABLE_FAILED 0x9
303 #define BNX2FC_FLAG_ENABLED 0xa
305 u8 src_addr[ETH_ALEN];
311 struct b577xx_doorbell_set_prod sq_db;
312 struct b577xx_fcoe_rx_doorbell rx_db;
317 u8 sq_curr_toggle_bit;
323 u8 cq_curr_toggle_bit;
333 dma_addr_t rq_pbl_dma;
336 struct fcoe_xfrqe *xferq;
337 dma_addr_t xferq_dma;
340 struct fcoe_confqe *confq;
341 dma_addr_t confq_dma;
345 dma_addr_t confq_pbl_dma;
348 struct fcoe_conn_db *conn_db;
349 dma_addr_t conn_db_dma;
350 u32 conn_db_mem_size;
352 struct fcoe_sqe *lcq;
357 dma_addr_t ofld_req_dma[4];
359 dma_addr_t enbl_req_dma;
363 atomic_t num_active_ios;
365 unsigned long timestamp;
366 struct list_head free_task_list;
367 struct bnx2fc_cmd *pending_queue[BNX2FC_SQ_WQES_MAX+1];
368 struct list_head active_cmd_queue;
369 struct list_head els_queue;
370 struct list_head io_retire_queue;
371 struct list_head active_tm_queue;
373 struct timer_list ofld_timer;
374 wait_queue_head_t ofld_wait;
376 struct timer_list upld_timer;
377 wait_queue_head_t upld_wait;
380 struct bnx2fc_mp_req {
385 dma_addr_t req_buf_dma;
386 struct fcoe_bd_ctx *mp_req_bd;
387 dma_addr_t mp_req_bd_dma;
388 struct fc_frame_header req_fc_hdr;
392 dma_addr_t resp_buf_dma;
393 struct fcoe_bd_ctx *mp_resp_bd;
394 dma_addr_t mp_resp_bd_dma;
395 struct fc_frame_header resp_fc_hdr;
398 struct bnx2fc_els_cb_arg {
399 struct bnx2fc_cmd *aborted_io_req;
400 struct bnx2fc_cmd *io_req;
406 /* bnx2fc command structure */
408 struct list_head link;
412 #define BNX2FC_SCSI_CMD 1
413 #define BNX2FC_TASK_MGMT_CMD 2
414 #define BNX2FC_ABTS 3
416 #define BNX2FC_CLEANUP 5
417 #define BNX2FC_SEQ_CLEANUP 6
419 struct kref refcount;
420 struct fcoe_port *port;
421 struct bnx2fc_rport *tgt;
422 struct scsi_cmnd *sc_cmd;
423 struct bnx2fc_cmd_mgr *cmd_mgr;
424 struct bnx2fc_mp_req mp_req;
425 void (*cb_func)(struct bnx2fc_els_cb_arg *cb_arg);
426 struct bnx2fc_els_cb_arg *cb_arg;
427 struct delayed_work timeout_work; /* timer for ULP timeouts */
428 struct completion tm_done;
431 struct fcoe_err_report_entry err_entry;
432 struct fcoe_task_ctx_entry *task;
433 struct io_bdt *bd_tbl;
435 size_t data_xfer_len;
436 unsigned long req_flags;
437 #define BNX2FC_FLAG_ISSUE_RRQ 0x1
438 #define BNX2FC_FLAG_ISSUE_ABTS 0x2
439 #define BNX2FC_FLAG_ABTS_DONE 0x3
440 #define BNX2FC_FLAG_TM_COMPL 0x4
441 #define BNX2FC_FLAG_TM_TIMEOUT 0x5
442 #define BNX2FC_FLAG_IO_CLEANUP 0x6
443 #define BNX2FC_FLAG_RETIRE_OXID 0x7
444 #define BNX2FC_FLAG_EH_ABORT 0x8
445 #define BNX2FC_FLAG_IO_COMPL 0x9
446 #define BNX2FC_FLAG_ELS_DONE 0xa
447 #define BNX2FC_FLAG_ELS_TIMEOUT 0xb
448 #define BNX2FC_FLAG_CMD_LOST 0xc
449 #define BNX2FC_FLAG_SRR_SENT 0xd
457 u8 cdb_status; /* SCSI IO status */
458 u8 fcp_status; /* FCP IO status */
464 struct bnx2fc_cmd *io_req;
465 struct fcoe_bd_ctx *bd_tbl;
466 dma_addr_t bd_tbl_dma;
471 struct list_head list;
472 struct bnx2fc_rport *tgt;
475 struct bnx2fc_unsol_els {
476 struct fc_lport *lport;
478 struct bnx2fc_hba *hba;
479 struct work_struct unsol_els_work;
484 struct bnx2fc_cmd *bnx2fc_cmd_alloc(struct bnx2fc_rport *tgt);
485 struct bnx2fc_cmd *bnx2fc_elstm_alloc(struct bnx2fc_rport *tgt, int type);
486 void bnx2fc_cmd_release(struct kref *ref);
487 int bnx2fc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc_cmd);
488 int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba);
489 int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba);
490 int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
491 struct bnx2fc_rport *tgt);
492 int bnx2fc_send_session_enable_req(struct fcoe_port *port,
493 struct bnx2fc_rport *tgt);
494 int bnx2fc_send_session_disable_req(struct fcoe_port *port,
495 struct bnx2fc_rport *tgt);
496 int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba,
497 struct bnx2fc_rport *tgt);
498 int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt);
499 void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
501 int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba);
502 void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba);
503 int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba);
504 void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba);
505 struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba);
506 void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr *cmgr);
507 void bnx2fc_get_link_state(struct bnx2fc_hba *hba);
508 char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items);
509 void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items);
510 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen);
511 int bnx2fc_send_rrq(struct bnx2fc_cmd *aborted_io_req);
512 int bnx2fc_send_adisc(struct bnx2fc_rport *tgt, struct fc_frame *fp);
513 int bnx2fc_send_logo(struct bnx2fc_rport *tgt, struct fc_frame *fp);
514 int bnx2fc_send_rls(struct bnx2fc_rport *tgt, struct fc_frame *fp);
515 int bnx2fc_initiate_cleanup(struct bnx2fc_cmd *io_req);
516 int bnx2fc_initiate_abts(struct bnx2fc_cmd *io_req);
517 void bnx2fc_cmd_timer_set(struct bnx2fc_cmd *io_req,
518 unsigned int timer_msec);
519 int bnx2fc_init_mp_req(struct bnx2fc_cmd *io_req);
520 void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
521 struct fcoe_task_ctx_entry *task,
523 void bnx2fc_init_seq_cleanup_task(struct bnx2fc_cmd *seq_clnup_req,
524 struct fcoe_task_ctx_entry *task,
525 struct bnx2fc_cmd *orig_io_req,
527 void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
528 struct fcoe_task_ctx_entry *task);
529 void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
530 struct fcoe_task_ctx_entry *task);
531 void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid);
532 void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt);
533 int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd);
534 int bnx2fc_eh_host_reset(struct scsi_cmnd *sc_cmd);
535 int bnx2fc_eh_target_reset(struct scsi_cmnd *sc_cmd);
536 int bnx2fc_eh_device_reset(struct scsi_cmnd *sc_cmd);
537 void bnx2fc_rport_event_handler(struct fc_lport *lport,
538 struct fc_rport_priv *rport,
539 enum fc_rport_event event);
540 void bnx2fc_process_scsi_cmd_compl(struct bnx2fc_cmd *io_req,
541 struct fcoe_task_ctx_entry *task,
543 void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd *io_req,
544 struct fcoe_task_ctx_entry *task,
546 void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req,
547 struct fcoe_task_ctx_entry *task,
549 void bnx2fc_process_tm_compl(struct bnx2fc_cmd *io_req,
550 struct fcoe_task_ctx_entry *task,
552 void bnx2fc_process_els_compl(struct bnx2fc_cmd *els_req,
553 struct fcoe_task_ctx_entry *task,
555 void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd *io_req,
556 struct fcp_cmnd *fcp_cmnd);
560 void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt);
561 struct fc_seq *bnx2fc_elsct_send(struct fc_lport *lport, u32 did,
562 struct fc_frame *fp, unsigned int op,
563 void (*resp)(struct fc_seq *,
566 void *arg, u32 timeout);
567 void bnx2fc_arm_cq(struct bnx2fc_rport *tgt);
568 int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt);
569 void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe);
570 struct bnx2fc_rport *bnx2fc_tgt_lookup(struct fcoe_port *port,
572 void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
574 u32 frame_len, u16 l2_oxid);
575 int bnx2fc_send_stat_req(struct bnx2fc_hba *hba);
576 int bnx2fc_post_io_req(struct bnx2fc_rport *tgt, struct bnx2fc_cmd *io_req);
577 int bnx2fc_send_rec(struct bnx2fc_cmd *orig_io_req);
578 int bnx2fc_send_srr(struct bnx2fc_cmd *orig_io_req, u32 offset, u8 r_ctl);
579 void bnx2fc_process_seq_cleanup_compl(struct bnx2fc_cmd *seq_clnup_req,
580 struct fcoe_task_ctx_entry *task,
582 int bnx2fc_initiate_seq_cleanup(struct bnx2fc_cmd *orig_io_req, u32 offset,
586 #include "bnx2fc_debug.h"