1 /* bnx2fc.h: QLogic Linux FCoE offload driver.
3 * Copyright (c) 2008-2013 Broadcom Corporation
4 * Copyright (c) 2014-2015 QLogic Corporation
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation.
10 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
15 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
17 #include <linux/module.h>
18 #include <linux/moduleparam.h>
19 #include <linux/kernel.h>
20 #include <linux/skbuff.h>
21 #include <linux/netdevice.h>
22 #include <linux/etherdevice.h>
23 #include <linux/if_ether.h>
24 #include <linux/if_vlan.h>
25 #include <linux/kthread.h>
26 #include <linux/crc32.h>
27 #include <linux/cpu.h>
28 #include <linux/types.h>
29 #include <linux/list.h>
30 #include <linux/delay.h>
31 #include <linux/timer.h>
32 #include <linux/errno.h>
33 #include <linux/pci.h>
34 #include <linux/init.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/workqueue.h>
37 #include <linux/mutex.h>
38 #include <linux/spinlock.h>
39 #include <linux/bitops.h>
40 #include <linux/log2.h>
41 #include <linux/interrupt.h>
42 #include <linux/sched.h>
45 #include <scsi/scsi.h>
46 #include <scsi/scsi_host.h>
47 #include <scsi/scsi_device.h>
48 #include <scsi/scsi_cmnd.h>
49 #include <scsi/scsi_eh.h>
50 #include <scsi/scsi_tcq.h>
51 #include <scsi/libfc.h>
52 #include <scsi/libfcoe.h>
53 #include <scsi/fc_encode.h>
54 #include <scsi/scsi_transport.h>
55 #include <scsi/scsi_transport_fc.h>
56 #include <scsi/fc/fc_fip.h>
57 #include <scsi/fc/fc_fc2.h>
58 #include <scsi/fc_frame.h>
59 #include <scsi/fc/fc_fcoe.h>
60 #include <scsi/fc/fc_fcp.h>
62 #include "57xx_hsi_bnx2fc.h"
63 #include "../../net/ethernet/broadcom/cnic_if.h"
64 #include "../../net/ethernet/broadcom/bnx2x/bnx2x_mfw_req.h"
65 #include "bnx2fc_constants.h"
67 #define BNX2FC_NAME "bnx2fc"
68 #define BNX2FC_VERSION "2.9.6"
70 #define PFX "bnx2fc: "
72 #define BCM_CHIP_LEN 16
74 #define BNX2X_DOORBELL_PCI_BAR 2
76 #define BNX2FC_MAX_BD_LEN 0xffff
77 #define BNX2FC_BD_SPLIT_SZ 0x8000
78 #define BNX2FC_MAX_BDS_PER_CMD 256
80 #define BNX2FC_SQ_WQES_MAX 256
82 #define BNX2FC_SCSI_MAX_SQES ((3 * BNX2FC_SQ_WQES_MAX) / 8)
83 #define BNX2FC_TM_MAX_SQES ((BNX2FC_SQ_WQES_MAX) / 2)
84 #define BNX2FC_ELS_MAX_SQES (BNX2FC_TM_MAX_SQES - 1)
86 #define BNX2FC_RQ_WQES_MAX 16
87 #define BNX2FC_CQ_WQES_MAX (BNX2FC_SQ_WQES_MAX + BNX2FC_RQ_WQES_MAX)
89 #define BNX2FC_NUM_MAX_SESS 1024
90 #define BNX2FC_NUM_MAX_SESS_LOG (ilog2(BNX2FC_NUM_MAX_SESS))
92 #define BNX2FC_MAX_NPIV 256
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 BNX2X_DB_SHIFT 3
111 #define BNX2FC_TASK_SIZE 128
112 #define BNX2FC_TASKS_PER_PAGE (PAGE_SIZE/BNX2FC_TASK_SIZE)
114 #define BNX2FC_MAX_ROWS_IN_HASH_TBL 8
115 #define BNX2FC_HASH_TBL_CHUNK_SIZE (16 * 1024)
117 #define BNX2FC_MAX_SEQS 255
118 #define BNX2FC_MAX_RETRY_CNT 3
119 #define BNX2FC_MAX_RPORT_RETRY_CNT 255
121 #define BNX2FC_READ (1 << 1)
122 #define BNX2FC_WRITE (1 << 0)
124 #define BNX2FC_MIN_XID 0
125 #define FCOE_MAX_NUM_XIDS 0x2000
126 #define FCOE_MAX_XID_OFFSET (FCOE_MAX_NUM_XIDS - 1)
127 #define FCOE_XIDS_PER_CPU_OFFSET ((512 * nr_cpu_ids) - 1)
128 #define BNX2FC_MAX_LUN 0xFFFF
129 #define BNX2FC_MAX_FCP_TGT 256
130 #define BNX2FC_MAX_CMD_LEN 16
132 #define BNX2FC_TM_TIMEOUT 60 /* secs */
133 #define BNX2FC_IO_TIMEOUT 20000UL /* msecs */
135 #define BNX2FC_WAIT_CNT 1200
136 #define BNX2FC_FW_TIMEOUT (3 * HZ)
139 #define CMD_SCSI_STATUS(Cmnd) ((Cmnd)->SCp.Status)
144 #define BNX2FC_RNID_HBA 0x7
146 #define SRR_RETRY_COUNT 5
147 #define REC_RETRY_COUNT 1
148 #define BNX2FC_NUM_ERR_BITS 63
150 #define BNX2FC_RELOGIN_WAIT_TIME 200
151 #define BNX2FC_RELOGIN_WAIT_CNT 10
153 #define BNX2FC_STATS(hba, stat, cnt) \
157 val = fw_stats->stat.cnt; \
158 if (hba->prev_stats.stat.cnt <= val) \
159 val -= hba->prev_stats.stat.cnt; \
161 val += (0xfffffff - hba->prev_stats.stat.cnt); \
162 hba->bfw_stats.cnt += val; \
165 /* bnx2fc driver uses only one instance of fcoe_percpu_s */
166 extern struct fcoe_percpu_s bnx2fc_global;
168 extern struct workqueue_struct *bnx2fc_wq;
170 struct bnx2fc_percpu_s {
171 struct task_struct *iothread;
172 struct list_head work_list;
173 spinlock_t fp_work_lock;
176 struct bnx2fc_fw_stats {
180 u64 fcoe_tx_byte_cnt;
181 u64 fcoe_rx_byte_cnt;
185 struct list_head list;
186 struct cnic_dev *cnic;
187 struct pci_dev *pcidev;
188 struct net_device *phys_dev;
189 unsigned long reg_with_cnic;
190 #define BNX2FC_CNIC_REGISTERED 1
191 struct bnx2fc_cmd_mgr *cmd_mgr;
193 struct mutex hba_mutex;
194 struct mutex hba_stats_mutex;
195 unsigned long adapter_state;
196 #define ADAPTER_STATE_UP 0
197 #define ADAPTER_STATE_GOING_DOWN 1
198 #define ADAPTER_STATE_LINK_DOWN 2
199 #define ADAPTER_STATE_READY 3
201 #define BNX2FC_FLAG_FW_INIT_DONE 0
202 #define BNX2FC_FLAG_DESTROY_CMPL 1
208 u32 max_outstanding_cmds;
211 struct fcoe_task_ctx_entry **task_ctx;
212 dma_addr_t *task_ctx_dma;
213 struct regpair *task_ctx_bd_tbl;
214 dma_addr_t task_ctx_bd_dma;
216 int hash_tbl_segment_count;
217 void **hash_tbl_segments;
219 dma_addr_t hash_tbl_pbl_dma;
220 struct fcoe_t2_hash_table_entry *t2_hash_tbl;
221 dma_addr_t t2_hash_tbl_dma;
222 char *t2_hash_tbl_ptr;
223 dma_addr_t t2_hash_tbl_ptr_dma;
226 dma_addr_t dummy_buf_dma;
228 /* Active list of offloaded sessions */
229 struct bnx2fc_rport **tgt_ofld_list;
232 struct bnx2fc_fw_stats bfw_stats;
233 struct fcoe_statistics_params prev_stats;
234 struct fcoe_statistics_params *stats_buffer;
235 dma_addr_t stats_buf_dma;
236 struct completion stat_req_done;
237 struct fcoe_capabilities fcoe_cap;
239 /*destroy handling */
240 struct timer_list destroy_timer;
241 wait_queue_head_t destroy_wait;
243 /* linkdown handling */
244 wait_queue_head_t shutdown_wait;
245 int wait_for_link_down;
247 struct list_head vports;
249 char chip_num[BCM_CHIP_LEN];
252 struct bnx2fc_interface {
253 struct list_head list;
254 unsigned long if_flags;
255 #define BNX2FC_CTLR_INIT_DONE 0
256 struct bnx2fc_hba *hba;
257 struct net_device *netdev;
258 struct packet_type fcoe_packet_type;
259 struct packet_type fip_packet_type;
260 struct workqueue_struct *timer_work_queue;
267 #define bnx2fc_from_ctlr(x) \
268 ((struct bnx2fc_interface *)((x) + 1))
270 #define bnx2fc_to_ctlr(x) \
271 ((struct fcoe_ctlr *)(((struct fcoe_ctlr *)(x)) - 1))
273 struct bnx2fc_lport {
274 struct list_head list;
275 struct fc_lport *lport;
278 struct bnx2fc_cmd_mgr {
279 struct bnx2fc_hba *hba;
281 struct list_head *free_list;
282 spinlock_t *free_list_lock;
283 struct io_bdt **io_bdt_pool;
284 struct bnx2fc_cmd **cmds;
287 struct bnx2fc_rport {
288 struct fcoe_port *port;
289 struct fc_rport *rport;
290 struct fc_rport_priv *rdata;
291 void __iomem *ctx_base;
292 #define DPM_TRIGER_TYPE 0x40
300 #define BNX2FC_FLAG_SESSION_READY 0x1
301 #define BNX2FC_FLAG_OFFLOADED 0x2
302 #define BNX2FC_FLAG_DISABLED 0x3
303 #define BNX2FC_FLAG_DESTROYED 0x4
304 #define BNX2FC_FLAG_OFLD_REQ_CMPL 0x5
305 #define BNX2FC_FLAG_CTX_ALLOC_FAILURE 0x6
306 #define BNX2FC_FLAG_UPLD_REQ_COMPL 0x7
307 #define BNX2FC_FLAG_DISABLE_FAILED 0x9
308 #define BNX2FC_FLAG_ENABLED 0xa
310 u8 src_addr[ETH_ALEN];
316 struct b577xx_doorbell_set_prod sq_db;
317 struct b577xx_fcoe_rx_doorbell rx_db;
322 u8 sq_curr_toggle_bit;
328 u8 cq_curr_toggle_bit;
338 dma_addr_t rq_pbl_dma;
341 struct fcoe_xfrqe *xferq;
342 dma_addr_t xferq_dma;
345 struct fcoe_confqe *confq;
346 dma_addr_t confq_dma;
350 dma_addr_t confq_pbl_dma;
353 struct fcoe_conn_db *conn_db;
354 dma_addr_t conn_db_dma;
355 u32 conn_db_mem_size;
357 struct fcoe_sqe *lcq;
362 dma_addr_t ofld_req_dma[4];
364 dma_addr_t enbl_req_dma;
368 atomic_t num_active_ios;
370 unsigned long timestamp;
371 unsigned long retry_delay_timestamp;
372 struct list_head free_task_list;
373 struct bnx2fc_cmd *pending_queue[BNX2FC_SQ_WQES_MAX+1];
374 struct list_head active_cmd_queue;
375 struct list_head els_queue;
376 struct list_head io_retire_queue;
377 struct list_head active_tm_queue;
379 struct timer_list ofld_timer;
380 wait_queue_head_t ofld_wait;
382 struct timer_list upld_timer;
383 wait_queue_head_t upld_wait;
386 struct bnx2fc_mp_req {
391 dma_addr_t req_buf_dma;
392 struct fcoe_bd_ctx *mp_req_bd;
393 dma_addr_t mp_req_bd_dma;
394 struct fc_frame_header req_fc_hdr;
398 dma_addr_t resp_buf_dma;
399 struct fcoe_bd_ctx *mp_resp_bd;
400 dma_addr_t mp_resp_bd_dma;
401 struct fc_frame_header resp_fc_hdr;
404 struct bnx2fc_els_cb_arg {
405 struct bnx2fc_cmd *aborted_io_req;
406 struct bnx2fc_cmd *io_req;
412 /* bnx2fc command structure */
414 struct list_head link;
418 #define BNX2FC_SCSI_CMD 1
419 #define BNX2FC_TASK_MGMT_CMD 2
420 #define BNX2FC_ABTS 3
422 #define BNX2FC_CLEANUP 5
423 #define BNX2FC_SEQ_CLEANUP 6
425 struct kref refcount;
426 struct fcoe_port *port;
427 struct bnx2fc_rport *tgt;
428 struct scsi_cmnd *sc_cmd;
429 struct bnx2fc_cmd_mgr *cmd_mgr;
430 struct bnx2fc_mp_req mp_req;
431 void (*cb_func)(struct bnx2fc_els_cb_arg *cb_arg);
432 struct bnx2fc_els_cb_arg *cb_arg;
433 struct delayed_work timeout_work; /* timer for ULP timeouts */
434 struct completion tm_done;
437 struct fcoe_err_report_entry err_entry;
438 struct fcoe_task_ctx_entry *task;
439 struct io_bdt *bd_tbl;
441 size_t data_xfer_len;
442 unsigned long req_flags;
443 #define BNX2FC_FLAG_ISSUE_RRQ 0x1
444 #define BNX2FC_FLAG_ISSUE_ABTS 0x2
445 #define BNX2FC_FLAG_ABTS_DONE 0x3
446 #define BNX2FC_FLAG_TM_COMPL 0x4
447 #define BNX2FC_FLAG_TM_TIMEOUT 0x5
448 #define BNX2FC_FLAG_IO_CLEANUP 0x6
449 #define BNX2FC_FLAG_RETIRE_OXID 0x7
450 #define BNX2FC_FLAG_EH_ABORT 0x8
451 #define BNX2FC_FLAG_IO_COMPL 0x9
452 #define BNX2FC_FLAG_ELS_DONE 0xa
453 #define BNX2FC_FLAG_ELS_TIMEOUT 0xb
454 #define BNX2FC_FLAG_CMD_LOST 0xc
455 #define BNX2FC_FLAG_SRR_SENT 0xd
463 u8 cdb_status; /* SCSI IO status */
464 u8 fcp_status; /* FCP IO status */
470 struct bnx2fc_cmd *io_req;
471 struct fcoe_bd_ctx *bd_tbl;
472 dma_addr_t bd_tbl_dma;
477 struct list_head list;
478 struct bnx2fc_rport *tgt;
481 struct bnx2fc_unsol_els {
482 struct fc_lport *lport;
484 struct bnx2fc_hba *hba;
485 struct work_struct unsol_els_work;
490 struct bnx2fc_cmd *bnx2fc_cmd_alloc(struct bnx2fc_rport *tgt);
491 struct bnx2fc_cmd *bnx2fc_elstm_alloc(struct bnx2fc_rport *tgt, int type);
492 void bnx2fc_cmd_release(struct kref *ref);
493 int bnx2fc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc_cmd);
494 int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba);
495 int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba);
496 int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
497 struct bnx2fc_rport *tgt);
498 int bnx2fc_send_session_enable_req(struct fcoe_port *port,
499 struct bnx2fc_rport *tgt);
500 int bnx2fc_send_session_disable_req(struct fcoe_port *port,
501 struct bnx2fc_rport *tgt);
502 int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba,
503 struct bnx2fc_rport *tgt);
504 int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt);
505 void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
507 int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba);
508 void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba);
509 int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba);
510 void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba);
511 struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba);
512 void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr *cmgr);
513 void bnx2fc_get_link_state(struct bnx2fc_hba *hba);
514 char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items);
515 void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items);
516 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen);
517 int bnx2fc_send_rrq(struct bnx2fc_cmd *aborted_io_req);
518 int bnx2fc_send_adisc(struct bnx2fc_rport *tgt, struct fc_frame *fp);
519 int bnx2fc_send_logo(struct bnx2fc_rport *tgt, struct fc_frame *fp);
520 int bnx2fc_send_rls(struct bnx2fc_rport *tgt, struct fc_frame *fp);
521 int bnx2fc_initiate_cleanup(struct bnx2fc_cmd *io_req);
522 int bnx2fc_initiate_abts(struct bnx2fc_cmd *io_req);
523 void bnx2fc_cmd_timer_set(struct bnx2fc_cmd *io_req,
524 unsigned int timer_msec);
525 int bnx2fc_init_mp_req(struct bnx2fc_cmd *io_req);
526 void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
527 struct fcoe_task_ctx_entry *task,
529 void bnx2fc_init_seq_cleanup_task(struct bnx2fc_cmd *seq_clnup_req,
530 struct fcoe_task_ctx_entry *task,
531 struct bnx2fc_cmd *orig_io_req,
533 void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
534 struct fcoe_task_ctx_entry *task);
535 void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
536 struct fcoe_task_ctx_entry *task);
537 void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid);
538 void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt);
539 int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd);
540 int bnx2fc_eh_host_reset(struct scsi_cmnd *sc_cmd);
541 int bnx2fc_eh_target_reset(struct scsi_cmnd *sc_cmd);
542 int bnx2fc_eh_device_reset(struct scsi_cmnd *sc_cmd);
543 void bnx2fc_rport_event_handler(struct fc_lport *lport,
544 struct fc_rport_priv *rport,
545 enum fc_rport_event event);
546 void bnx2fc_process_scsi_cmd_compl(struct bnx2fc_cmd *io_req,
547 struct fcoe_task_ctx_entry *task,
549 void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd *io_req,
550 struct fcoe_task_ctx_entry *task,
552 void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req,
553 struct fcoe_task_ctx_entry *task,
555 void bnx2fc_process_tm_compl(struct bnx2fc_cmd *io_req,
556 struct fcoe_task_ctx_entry *task,
558 void bnx2fc_process_els_compl(struct bnx2fc_cmd *els_req,
559 struct fcoe_task_ctx_entry *task,
561 void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd *io_req,
562 struct fcp_cmnd *fcp_cmnd);
566 void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt);
567 struct fc_seq *bnx2fc_elsct_send(struct fc_lport *lport, u32 did,
568 struct fc_frame *fp, unsigned int op,
569 void (*resp)(struct fc_seq *,
572 void *arg, u32 timeout);
573 void bnx2fc_arm_cq(struct bnx2fc_rport *tgt);
574 int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt);
575 void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe);
576 struct bnx2fc_rport *bnx2fc_tgt_lookup(struct fcoe_port *port,
578 void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
580 u32 frame_len, u16 l2_oxid);
581 int bnx2fc_send_stat_req(struct bnx2fc_hba *hba);
582 int bnx2fc_post_io_req(struct bnx2fc_rport *tgt, struct bnx2fc_cmd *io_req);
583 int bnx2fc_send_rec(struct bnx2fc_cmd *orig_io_req);
584 int bnx2fc_send_srr(struct bnx2fc_cmd *orig_io_req, u32 offset, u8 r_ctl);
585 void bnx2fc_process_seq_cleanup_compl(struct bnx2fc_cmd *seq_clnup_req,
586 struct fcoe_task_ctx_entry *task,
588 int bnx2fc_initiate_seq_cleanup(struct bnx2fc_cmd *orig_io_req, u32 offset,
592 #include "bnx2fc_debug.h"