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_MAX_OUTSTANDING_CMNDS 2048
92 #define BNX2FC_CAN_QUEUE BNX2FC_MAX_OUTSTANDING_CMNDS
93 #define BNX2FC_ELSTM_XIDS BNX2FC_CAN_QUEUE
94 #define BNX2FC_MIN_PAYLOAD 256
95 #define BNX2FC_MAX_PAYLOAD 2048
97 (BNX2FC_MAX_PAYLOAD + sizeof(struct fc_frame_header))
98 #define BNX2FC_MINI_JUMBO_MTU 2500
101 #define BNX2FC_RQ_BUF_SZ 256
102 #define BNX2FC_RQ_BUF_LOG_SZ (ilog2(BNX2FC_RQ_BUF_SZ))
104 #define BNX2FC_SQ_WQE_SIZE (sizeof(struct fcoe_sqe))
105 #define BNX2FC_CQ_WQE_SIZE (sizeof(struct fcoe_cqe))
106 #define BNX2FC_RQ_WQE_SIZE (BNX2FC_RQ_BUF_SZ)
107 #define BNX2FC_XFERQ_WQE_SIZE (sizeof(struct fcoe_xfrqe))
108 #define BNX2FC_CONFQ_WQE_SIZE (sizeof(struct fcoe_confqe))
109 #define BNX2FC_5771X_DB_PAGE_SIZE 128
111 #define BNX2FC_MAX_TASKS \
112 (BNX2FC_MAX_OUTSTANDING_CMNDS + BNX2FC_ELSTM_XIDS)
113 #define BNX2FC_TASK_SIZE 128
114 #define BNX2FC_TASKS_PER_PAGE (PAGE_SIZE/BNX2FC_TASK_SIZE)
115 #define BNX2FC_TASK_CTX_ARR_SZ (BNX2FC_MAX_TASKS/BNX2FC_TASKS_PER_PAGE)
117 #define BNX2FC_MAX_ROWS_IN_HASH_TBL 8
118 #define BNX2FC_HASH_TBL_CHUNK_SIZE (16 * 1024)
120 #define BNX2FC_MAX_SEQS 255
121 #define BNX2FC_MAX_RETRY_CNT 3
122 #define BNX2FC_MAX_RPORT_RETRY_CNT 255
124 #define BNX2FC_READ (1 << 1)
125 #define BNX2FC_WRITE (1 << 0)
127 #define BNX2FC_MIN_XID 0
128 #define BNX2FC_MAX_XID \
129 (BNX2FC_MAX_OUTSTANDING_CMNDS + BNX2FC_ELSTM_XIDS - 1)
130 #define FCOE_MAX_NUM_XIDS 0x2000
131 #define FCOE_MIN_XID (BNX2FC_MAX_XID + 1)
132 #define FCOE_MAX_XID (FCOE_MIN_XID + FCOE_MAX_NUM_XIDS - 1)
133 #define FCOE_XIDS_PER_CPU (FCOE_MIN_XID + (512 * nr_cpu_ids) - 1)
134 #define BNX2FC_MAX_LUN 0xFFFF
135 #define BNX2FC_MAX_FCP_TGT 256
136 #define BNX2FC_MAX_CMD_LEN 16
138 #define BNX2FC_TM_TIMEOUT 60 /* secs */
139 #define BNX2FC_IO_TIMEOUT 20000UL /* msecs */
141 #define BNX2FC_WAIT_CNT 1200
142 #define BNX2FC_FW_TIMEOUT (3 * HZ)
145 #define CMD_SCSI_STATUS(Cmnd) ((Cmnd)->SCp.Status)
150 #define BNX2FC_RNID_HBA 0x7
152 #define SRR_RETRY_COUNT 5
153 #define REC_RETRY_COUNT 1
154 #define BNX2FC_NUM_ERR_BITS 63
156 #define BNX2FC_RELOGIN_WAIT_TIME 200
157 #define BNX2FC_RELOGIN_WAIT_CNT 10
159 #define BNX2FC_STATS(hba, stat, cnt) \
163 val = fw_stats->stat.cnt; \
164 if (hba->prev_stats.stat.cnt <= val) \
165 val -= hba->prev_stats.stat.cnt; \
167 val += (0xfffffff - hba->prev_stats.stat.cnt); \
168 hba->bfw_stats.cnt += val; \
171 /* bnx2fc driver uses only one instance of fcoe_percpu_s */
172 extern struct fcoe_percpu_s bnx2fc_global
;
174 extern struct workqueue_struct
*bnx2fc_wq
;
176 struct bnx2fc_percpu_s
{
177 struct task_struct
*iothread
;
178 struct list_head work_list
;
179 spinlock_t fp_work_lock
;
182 struct bnx2fc_fw_stats
{
186 u64 fcoe_tx_byte_cnt
;
187 u64 fcoe_rx_byte_cnt
;
191 struct list_head list
;
192 struct cnic_dev
*cnic
;
193 struct pci_dev
*pcidev
;
194 struct net_device
*phys_dev
;
195 unsigned long reg_with_cnic
;
196 #define BNX2FC_CNIC_REGISTERED 1
197 struct bnx2fc_cmd_mgr
*cmd_mgr
;
199 struct mutex hba_mutex
;
200 unsigned long adapter_state
;
201 #define ADAPTER_STATE_UP 0
202 #define ADAPTER_STATE_GOING_DOWN 1
203 #define ADAPTER_STATE_LINK_DOWN 2
204 #define ADAPTER_STATE_READY 3
206 #define BNX2FC_FLAG_FW_INIT_DONE 0
207 #define BNX2FC_FLAG_DESTROY_CMPL 1
209 struct fcoe_task_ctx_entry
**task_ctx
;
210 dma_addr_t
*task_ctx_dma
;
211 struct regpair
*task_ctx_bd_tbl
;
212 dma_addr_t task_ctx_bd_dma
;
214 int hash_tbl_segment_count
;
215 void **hash_tbl_segments
;
217 dma_addr_t hash_tbl_pbl_dma
;
218 struct fcoe_t2_hash_table_entry
*t2_hash_tbl
;
219 dma_addr_t t2_hash_tbl_dma
;
220 char *t2_hash_tbl_ptr
;
221 dma_addr_t t2_hash_tbl_ptr_dma
;
224 dma_addr_t dummy_buf_dma
;
226 /* Active list of offloaded sessions */
227 struct bnx2fc_rport
**tgt_ofld_list
;
230 struct bnx2fc_fw_stats bfw_stats
;
231 struct fcoe_statistics_params prev_stats
;
232 struct fcoe_statistics_params
*stats_buffer
;
233 dma_addr_t stats_buf_dma
;
234 struct completion stat_req_done
;
235 struct fcoe_capabilities fcoe_cap
;
237 /*destroy handling */
238 struct timer_list destroy_timer
;
239 wait_queue_head_t destroy_wait
;
241 /* linkdown handling */
242 wait_queue_head_t shutdown_wait
;
243 int wait_for_link_down
;
245 struct list_head vports
;
248 struct bnx2fc_interface
{
249 struct list_head list
;
250 unsigned long if_flags
;
251 #define BNX2FC_CTLR_INIT_DONE 0
252 struct bnx2fc_hba
*hba
;
253 struct net_device
*netdev
;
254 struct packet_type fcoe_packet_type
;
255 struct packet_type fip_packet_type
;
256 struct workqueue_struct
*timer_work_queue
;
263 #define bnx2fc_from_ctlr(x) \
264 ((struct bnx2fc_interface *)((x) + 1))
266 #define bnx2fc_to_ctlr(x) \
267 ((struct fcoe_ctlr *)(((struct fcoe_ctlr *)(x)) - 1))
269 struct bnx2fc_lport
{
270 struct list_head list
;
271 struct fc_lport
*lport
;
274 struct bnx2fc_cmd_mgr
{
275 struct bnx2fc_hba
*hba
;
277 struct list_head
*free_list
;
278 spinlock_t
*free_list_lock
;
279 struct io_bdt
**io_bdt_pool
;
280 struct bnx2fc_cmd
**cmds
;
283 struct bnx2fc_rport
{
284 struct fcoe_port
*port
;
285 struct fc_rport
*rport
;
286 struct fc_rport_priv
*rdata
;
287 void __iomem
*ctx_base
;
288 #define DPM_TRIGER_TYPE 0x40
296 #define BNX2FC_FLAG_SESSION_READY 0x1
297 #define BNX2FC_FLAG_OFFLOADED 0x2
298 #define BNX2FC_FLAG_DISABLED 0x3
299 #define BNX2FC_FLAG_DESTROYED 0x4
300 #define BNX2FC_FLAG_OFLD_REQ_CMPL 0x5
301 #define BNX2FC_FLAG_CTX_ALLOC_FAILURE 0x6
302 #define BNX2FC_FLAG_UPLD_REQ_COMPL 0x7
303 #define BNX2FC_FLAG_EXPL_LOGO 0x8
304 #define BNX2FC_FLAG_DISABLE_FAILED 0x9
305 #define BNX2FC_FLAG_ENABLED 0xa
307 u8 src_addr
[ETH_ALEN
];
313 struct b577xx_doorbell_set_prod sq_db
;
314 struct b577xx_fcoe_rx_doorbell rx_db
;
319 u8 sq_curr_toggle_bit
;
325 u8 cq_curr_toggle_bit
;
335 dma_addr_t rq_pbl_dma
;
338 struct fcoe_xfrqe
*xferq
;
339 dma_addr_t xferq_dma
;
342 struct fcoe_confqe
*confq
;
343 dma_addr_t confq_dma
;
347 dma_addr_t confq_pbl_dma
;
350 struct fcoe_conn_db
*conn_db
;
351 dma_addr_t conn_db_dma
;
352 u32 conn_db_mem_size
;
354 struct fcoe_sqe
*lcq
;
359 dma_addr_t ofld_req_dma
[4];
361 dma_addr_t enbl_req_dma
;
365 atomic_t num_active_ios
;
367 unsigned long timestamp
;
368 struct list_head free_task_list
;
369 struct bnx2fc_cmd
*pending_queue
[BNX2FC_SQ_WQES_MAX
+1];
370 struct list_head active_cmd_queue
;
371 struct list_head els_queue
;
372 struct list_head io_retire_queue
;
373 struct list_head active_tm_queue
;
375 struct timer_list ofld_timer
;
376 wait_queue_head_t ofld_wait
;
378 struct timer_list upld_timer
;
379 wait_queue_head_t upld_wait
;
382 struct bnx2fc_mp_req
{
387 dma_addr_t req_buf_dma
;
388 struct fcoe_bd_ctx
*mp_req_bd
;
389 dma_addr_t mp_req_bd_dma
;
390 struct fc_frame_header req_fc_hdr
;
394 dma_addr_t resp_buf_dma
;
395 struct fcoe_bd_ctx
*mp_resp_bd
;
396 dma_addr_t mp_resp_bd_dma
;
397 struct fc_frame_header resp_fc_hdr
;
400 struct bnx2fc_els_cb_arg
{
401 struct bnx2fc_cmd
*aborted_io_req
;
402 struct bnx2fc_cmd
*io_req
;
408 /* bnx2fc command structure */
410 struct list_head link
;
414 #define BNX2FC_SCSI_CMD 1
415 #define BNX2FC_TASK_MGMT_CMD 2
416 #define BNX2FC_ABTS 3
418 #define BNX2FC_CLEANUP 5
419 #define BNX2FC_SEQ_CLEANUP 6
421 struct kref refcount
;
422 struct fcoe_port
*port
;
423 struct bnx2fc_rport
*tgt
;
424 struct scsi_cmnd
*sc_cmd
;
425 struct bnx2fc_cmd_mgr
*cmd_mgr
;
426 struct bnx2fc_mp_req mp_req
;
427 void (*cb_func
)(struct bnx2fc_els_cb_arg
*cb_arg
);
428 struct bnx2fc_els_cb_arg
*cb_arg
;
429 struct delayed_work timeout_work
; /* timer for ULP timeouts */
430 struct completion tm_done
;
433 struct fcoe_err_report_entry err_entry
;
434 struct fcoe_task_ctx_entry
*task
;
435 struct io_bdt
*bd_tbl
;
437 size_t data_xfer_len
;
438 unsigned long req_flags
;
439 #define BNX2FC_FLAG_ISSUE_RRQ 0x1
440 #define BNX2FC_FLAG_ISSUE_ABTS 0x2
441 #define BNX2FC_FLAG_ABTS_DONE 0x3
442 #define BNX2FC_FLAG_TM_COMPL 0x4
443 #define BNX2FC_FLAG_TM_TIMEOUT 0x5
444 #define BNX2FC_FLAG_IO_CLEANUP 0x6
445 #define BNX2FC_FLAG_RETIRE_OXID 0x7
446 #define BNX2FC_FLAG_EH_ABORT 0x8
447 #define BNX2FC_FLAG_IO_COMPL 0x9
448 #define BNX2FC_FLAG_ELS_DONE 0xa
449 #define BNX2FC_FLAG_ELS_TIMEOUT 0xb
450 #define BNX2FC_FLAG_CMD_LOST 0xc
451 #define BNX2FC_FLAG_SRR_SENT 0xd
459 u8 cdb_status
; /* SCSI IO status */
460 u8 fcp_status
; /* FCP IO status */
466 struct bnx2fc_cmd
*io_req
;
467 struct fcoe_bd_ctx
*bd_tbl
;
468 dma_addr_t bd_tbl_dma
;
473 struct list_head list
;
474 struct bnx2fc_rport
*tgt
;
477 struct bnx2fc_unsol_els
{
478 struct fc_lport
*lport
;
480 struct bnx2fc_hba
*hba
;
481 struct work_struct unsol_els_work
;
486 struct bnx2fc_cmd
*bnx2fc_cmd_alloc(struct bnx2fc_rport
*tgt
);
487 struct bnx2fc_cmd
*bnx2fc_elstm_alloc(struct bnx2fc_rport
*tgt
, int type
);
488 void bnx2fc_cmd_release(struct kref
*ref
);
489 int bnx2fc_queuecommand(struct Scsi_Host
*host
, struct scsi_cmnd
*sc_cmd
);
490 int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba
*hba
);
491 int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba
*hba
);
492 int bnx2fc_send_session_ofld_req(struct fcoe_port
*port
,
493 struct bnx2fc_rport
*tgt
);
494 int bnx2fc_send_session_enable_req(struct fcoe_port
*port
,
495 struct bnx2fc_rport
*tgt
);
496 int bnx2fc_send_session_disable_req(struct fcoe_port
*port
,
497 struct bnx2fc_rport
*tgt
);
498 int bnx2fc_send_session_destroy_req(struct bnx2fc_hba
*hba
,
499 struct bnx2fc_rport
*tgt
);
500 int bnx2fc_map_doorbell(struct bnx2fc_rport
*tgt
);
501 void bnx2fc_indicate_kcqe(void *context
, struct kcqe
*kcq
[],
503 int bnx2fc_setup_task_ctx(struct bnx2fc_hba
*hba
);
504 void bnx2fc_free_task_ctx(struct bnx2fc_hba
*hba
);
505 int bnx2fc_setup_fw_resc(struct bnx2fc_hba
*hba
);
506 void bnx2fc_free_fw_resc(struct bnx2fc_hba
*hba
);
507 struct bnx2fc_cmd_mgr
*bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba
*hba
,
508 u16 min_xid
, u16 max_xid
);
509 void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr
*cmgr
);
510 void bnx2fc_get_link_state(struct bnx2fc_hba
*hba
);
511 char *bnx2fc_get_next_rqe(struct bnx2fc_rport
*tgt
, u8 num_items
);
512 void bnx2fc_return_rqe(struct bnx2fc_rport
*tgt
, u8 num_items
);
513 int bnx2fc_get_paged_crc_eof(struct sk_buff
*skb
, int tlen
);
514 int bnx2fc_send_rrq(struct bnx2fc_cmd
*aborted_io_req
);
515 int bnx2fc_send_adisc(struct bnx2fc_rport
*tgt
, struct fc_frame
*fp
);
516 int bnx2fc_send_logo(struct bnx2fc_rport
*tgt
, struct fc_frame
*fp
);
517 int bnx2fc_send_rls(struct bnx2fc_rport
*tgt
, struct fc_frame
*fp
);
518 int bnx2fc_initiate_cleanup(struct bnx2fc_cmd
*io_req
);
519 int bnx2fc_initiate_abts(struct bnx2fc_cmd
*io_req
);
520 void bnx2fc_cmd_timer_set(struct bnx2fc_cmd
*io_req
,
521 unsigned int timer_msec
);
522 int bnx2fc_init_mp_req(struct bnx2fc_cmd
*io_req
);
523 void bnx2fc_init_cleanup_task(struct bnx2fc_cmd
*io_req
,
524 struct fcoe_task_ctx_entry
*task
,
526 void bnx2fc_init_seq_cleanup_task(struct bnx2fc_cmd
*seq_clnup_req
,
527 struct fcoe_task_ctx_entry
*task
,
528 struct bnx2fc_cmd
*orig_io_req
,
530 void bnx2fc_init_mp_task(struct bnx2fc_cmd
*io_req
,
531 struct fcoe_task_ctx_entry
*task
);
532 void bnx2fc_init_task(struct bnx2fc_cmd
*io_req
,
533 struct fcoe_task_ctx_entry
*task
);
534 void bnx2fc_add_2_sq(struct bnx2fc_rport
*tgt
, u16 xid
);
535 void bnx2fc_ring_doorbell(struct bnx2fc_rport
*tgt
);
536 int bnx2fc_eh_abort(struct scsi_cmnd
*sc_cmd
);
537 int bnx2fc_eh_host_reset(struct scsi_cmnd
*sc_cmd
);
538 int bnx2fc_eh_target_reset(struct scsi_cmnd
*sc_cmd
);
539 int bnx2fc_eh_device_reset(struct scsi_cmnd
*sc_cmd
);
540 void bnx2fc_rport_event_handler(struct fc_lport
*lport
,
541 struct fc_rport_priv
*rport
,
542 enum fc_rport_event event
);
543 void bnx2fc_process_scsi_cmd_compl(struct bnx2fc_cmd
*io_req
,
544 struct fcoe_task_ctx_entry
*task
,
546 void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd
*io_req
,
547 struct fcoe_task_ctx_entry
*task
,
549 void bnx2fc_process_abts_compl(struct bnx2fc_cmd
*io_req
,
550 struct fcoe_task_ctx_entry
*task
,
552 void bnx2fc_process_tm_compl(struct bnx2fc_cmd
*io_req
,
553 struct fcoe_task_ctx_entry
*task
,
555 void bnx2fc_process_els_compl(struct bnx2fc_cmd
*els_req
,
556 struct fcoe_task_ctx_entry
*task
,
558 void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd
*io_req
,
559 struct fcp_cmnd
*fcp_cmnd
);
563 void bnx2fc_flush_active_ios(struct bnx2fc_rport
*tgt
);
564 struct fc_seq
*bnx2fc_elsct_send(struct fc_lport
*lport
, u32 did
,
565 struct fc_frame
*fp
, unsigned int op
,
566 void (*resp
)(struct fc_seq
*,
569 void *arg
, u32 timeout
);
570 void bnx2fc_arm_cq(struct bnx2fc_rport
*tgt
);
571 int bnx2fc_process_new_cqes(struct bnx2fc_rport
*tgt
);
572 void bnx2fc_process_cq_compl(struct bnx2fc_rport
*tgt
, u16 wqe
);
573 struct bnx2fc_rport
*bnx2fc_tgt_lookup(struct fcoe_port
*port
,
575 void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport
*tgt
,
577 u32 frame_len
, u16 l2_oxid
);
578 int bnx2fc_send_stat_req(struct bnx2fc_hba
*hba
);
579 int bnx2fc_post_io_req(struct bnx2fc_rport
*tgt
, struct bnx2fc_cmd
*io_req
);
580 int bnx2fc_send_rec(struct bnx2fc_cmd
*orig_io_req
);
581 int bnx2fc_send_srr(struct bnx2fc_cmd
*orig_io_req
, u32 offset
, u8 r_ctl
);
582 void bnx2fc_process_seq_cleanup_compl(struct bnx2fc_cmd
*seq_clnup_req
,
583 struct fcoe_task_ctx_entry
*task
,
585 int bnx2fc_initiate_seq_cleanup(struct bnx2fc_cmd
*orig_io_req
, u32 offset
,
589 #include "bnx2fc_debug.h"