3 /* bnx2fc.h: Broadcom NetXtreme II Linux FCoE offload driver.
5 * Copyright (c) 2008 - 2010 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 #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>
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>
59 #include "57xx_hsi_bnx2fc.h"
60 #include "bnx2fc_debug.h"
61 #include "../../net/cnic_if.h"
62 #include "bnx2fc_constants.h"
64 #define BNX2FC_NAME "bnx2fc"
65 #define BNX2FC_VERSION "1.0.3"
67 #define PFX "bnx2fc: "
69 #define BNX2X_DOORBELL_PCI_BAR 2
71 #define BNX2FC_MAX_BD_LEN 0xffff
72 #define BNX2FC_BD_SPLIT_SZ 0x8000
73 #define BNX2FC_MAX_BDS_PER_CMD 256
75 #define BNX2FC_SQ_WQES_MAX 256
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)
81 #define BNX2FC_RQ_WQES_MAX 16
82 #define BNX2FC_CQ_WQES_MAX (BNX2FC_SQ_WQES_MAX + BNX2FC_RQ_WQES_MAX)
84 #define BNX2FC_NUM_MAX_SESS 128
85 #define BNX2FC_NUM_MAX_SESS_LOG (ilog2(BNX2FC_NUM_MAX_SESS))
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
93 (BNX2FC_MAX_PAYLOAD + sizeof(struct fc_frame_header))
94 #define BNX2FC_MINI_JUMBO_MTU 2500
97 #define BNX2FC_RQ_BUF_SZ 256
98 #define BNX2FC_RQ_BUF_LOG_SZ (ilog2(BNX2FC_RQ_BUF_SZ))
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
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)
113 #define BNX2FC_MAX_ROWS_IN_HASH_TBL 8
114 #define BNX2FC_HASH_TBL_CHUNK_SIZE (16 * 1024)
116 #define BNX2FC_MAX_SEQS 255
118 #define BNX2FC_READ (1 << 1)
119 #define BNX2FC_WRITE (1 << 0)
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
130 #define BNX2FC_TM_TIMEOUT 60 /* secs */
131 #define BNX2FC_IO_TIMEOUT 20000UL /* msecs */
133 #define BNX2FC_WAIT_CNT 1200
134 #define BNX2FC_FW_TIMEOUT (3 * HZ)
137 #define CMD_SCSI_STATUS(Cmnd) ((Cmnd)->SCp.Status)
142 #define BNX2FC_RNID_HBA 0x7
144 #define SRR_RETRY_COUNT 5
145 #define REC_RETRY_COUNT 1
147 /* bnx2fc driver uses only one instance of fcoe_percpu_s */
148 extern struct fcoe_percpu_s bnx2fc_global;
150 extern struct workqueue_struct *bnx2fc_wq;
152 struct bnx2fc_percpu_s {
153 struct task_struct *iothread;
154 struct list_head work_list;
155 spinlock_t fp_work_lock;
159 struct list_head list;
160 struct cnic_dev *cnic;
161 struct pci_dev *pcidev;
162 struct net_device *phys_dev;
163 unsigned long reg_with_cnic;
164 #define BNX2FC_CNIC_REGISTERED 1
165 struct bnx2fc_cmd_mgr *cmd_mgr;
167 struct mutex hba_mutex;
168 unsigned long adapter_state;
169 #define ADAPTER_STATE_UP 0
170 #define ADAPTER_STATE_GOING_DOWN 1
171 #define ADAPTER_STATE_LINK_DOWN 2
172 #define ADAPTER_STATE_READY 3
174 #define BNX2FC_FLAG_FW_INIT_DONE 0
175 #define BNX2FC_FLAG_DESTROY_CMPL 1
177 struct fcoe_task_ctx_entry **task_ctx;
178 dma_addr_t *task_ctx_dma;
179 struct regpair *task_ctx_bd_tbl;
180 dma_addr_t task_ctx_bd_dma;
182 int hash_tbl_segment_count;
183 void **hash_tbl_segments;
185 dma_addr_t hash_tbl_pbl_dma;
186 struct fcoe_t2_hash_table_entry *t2_hash_tbl;
187 dma_addr_t t2_hash_tbl_dma;
188 char *t2_hash_tbl_ptr;
189 dma_addr_t t2_hash_tbl_ptr_dma;
192 dma_addr_t dummy_buf_dma;
194 /* Active list of offloaded sessions */
195 struct bnx2fc_rport **tgt_ofld_list;
198 struct fcoe_statistics_params *stats_buffer;
199 dma_addr_t stats_buf_dma;
200 struct completion stat_req_done;
202 /*destroy handling */
203 struct timer_list destroy_timer;
204 wait_queue_head_t destroy_wait;
206 /* linkdown handling */
207 wait_queue_head_t shutdown_wait;
208 int wait_for_link_down;
210 struct list_head vports;
213 struct bnx2fc_interface {
214 struct list_head list;
215 unsigned long if_flags;
216 #define BNX2FC_CTLR_INIT_DONE 0
217 struct bnx2fc_hba *hba;
218 struct net_device *netdev;
219 struct packet_type fcoe_packet_type;
220 struct packet_type fip_packet_type;
221 struct workqueue_struct *timer_work_queue;
223 struct fcoe_ctlr ctlr;
228 #define bnx2fc_from_ctlr(fip) container_of(fip, struct bnx2fc_interface, ctlr)
230 struct bnx2fc_lport {
231 struct list_head list;
232 struct fc_lport *lport;
235 struct bnx2fc_cmd_mgr {
236 struct bnx2fc_hba *hba;
238 struct list_head *free_list;
239 spinlock_t *free_list_lock;
240 struct io_bdt **io_bdt_pool;
241 struct bnx2fc_cmd **cmds;
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
257 #define BNX2FC_FLAG_SESSION_READY 0x1
258 #define BNX2FC_FLAG_OFFLOADED 0x2
259 #define BNX2FC_FLAG_DISABLED 0x3
260 #define BNX2FC_FLAG_DESTROYED 0x4
261 #define BNX2FC_FLAG_OFLD_REQ_CMPL 0x5
262 #define BNX2FC_FLAG_CTX_ALLOC_FAILURE 0x6
263 #define BNX2FC_FLAG_UPLD_REQ_COMPL 0x7
264 #define BNX2FC_FLAG_EXPL_LOGO 0x8
266 u8 src_addr[ETH_ALEN];
272 struct b577xx_doorbell_set_prod sq_db;
273 struct b577xx_fcoe_rx_doorbell rx_db;
278 u8 sq_curr_toggle_bit;
284 u8 cq_curr_toggle_bit;
294 dma_addr_t rq_pbl_dma;
297 struct fcoe_xfrqe *xferq;
298 dma_addr_t xferq_dma;
301 struct fcoe_confqe *confq;
302 dma_addr_t confq_dma;
306 dma_addr_t confq_pbl_dma;
309 struct fcoe_conn_db *conn_db;
310 dma_addr_t conn_db_dma;
311 u32 conn_db_mem_size;
313 struct fcoe_sqe *lcq;
318 dma_addr_t ofld_req_dma[4];
320 dma_addr_t enbl_req_dma;
324 atomic_t num_active_ios;
326 unsigned long timestamp;
327 struct list_head free_task_list;
328 struct bnx2fc_cmd *pending_queue[BNX2FC_SQ_WQES_MAX+1];
329 struct list_head active_cmd_queue;
330 struct list_head els_queue;
331 struct list_head io_retire_queue;
332 struct list_head active_tm_queue;
334 struct timer_list ofld_timer;
335 wait_queue_head_t ofld_wait;
337 struct timer_list upld_timer;
338 wait_queue_head_t upld_wait;
341 struct bnx2fc_mp_req {
346 dma_addr_t req_buf_dma;
347 struct fcoe_bd_ctx *mp_req_bd;
348 dma_addr_t mp_req_bd_dma;
349 struct fc_frame_header req_fc_hdr;
353 dma_addr_t resp_buf_dma;
354 struct fcoe_bd_ctx *mp_resp_bd;
355 dma_addr_t mp_resp_bd_dma;
356 struct fc_frame_header resp_fc_hdr;
359 struct bnx2fc_els_cb_arg {
360 struct bnx2fc_cmd *aborted_io_req;
361 struct bnx2fc_cmd *io_req;
367 /* bnx2fc command structure */
369 struct list_head link;
373 #define BNX2FC_SCSI_CMD 1
374 #define BNX2FC_TASK_MGMT_CMD 2
375 #define BNX2FC_ABTS 3
377 #define BNX2FC_CLEANUP 5
378 #define BNX2FC_SEQ_CLEANUP 6
380 struct kref refcount;
381 struct fcoe_port *port;
382 struct bnx2fc_rport *tgt;
383 struct scsi_cmnd *sc_cmd;
384 struct bnx2fc_cmd_mgr *cmd_mgr;
385 struct bnx2fc_mp_req mp_req;
386 void (*cb_func)(struct bnx2fc_els_cb_arg *cb_arg);
387 struct bnx2fc_els_cb_arg *cb_arg;
388 struct delayed_work timeout_work; /* timer for ULP timeouts */
389 struct completion tm_done;
392 struct fcoe_err_report_entry err_entry;
393 struct fcoe_task_ctx_entry *task;
394 struct io_bdt *bd_tbl;
396 size_t data_xfer_len;
397 unsigned long req_flags;
398 #define BNX2FC_FLAG_ISSUE_RRQ 0x1
399 #define BNX2FC_FLAG_ISSUE_ABTS 0x2
400 #define BNX2FC_FLAG_ABTS_DONE 0x3
401 #define BNX2FC_FLAG_TM_COMPL 0x4
402 #define BNX2FC_FLAG_TM_TIMEOUT 0x5
403 #define BNX2FC_FLAG_IO_CLEANUP 0x6
404 #define BNX2FC_FLAG_RETIRE_OXID 0x7
405 #define BNX2FC_FLAG_EH_ABORT 0x8
406 #define BNX2FC_FLAG_IO_COMPL 0x9
407 #define BNX2FC_FLAG_ELS_DONE 0xa
408 #define BNX2FC_FLAG_ELS_TIMEOUT 0xb
409 #define BNX2FC_FLAG_CMD_LOST 0xc
410 #define BNX2FC_FLAG_SRR_SENT 0xd
418 u8 cdb_status; /* SCSI IO status */
419 u8 fcp_status; /* FCP IO status */
425 struct bnx2fc_cmd *io_req;
426 struct fcoe_bd_ctx *bd_tbl;
427 dma_addr_t bd_tbl_dma;
432 struct list_head list;
433 struct bnx2fc_rport *tgt;
436 struct bnx2fc_unsol_els {
437 struct fc_lport *lport;
439 struct bnx2fc_hba *hba;
440 struct work_struct unsol_els_work;
445 struct bnx2fc_cmd *bnx2fc_cmd_alloc(struct bnx2fc_rport *tgt);
446 struct bnx2fc_cmd *bnx2fc_elstm_alloc(struct bnx2fc_rport *tgt, int type);
447 void bnx2fc_cmd_release(struct kref *ref);
448 int bnx2fc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc_cmd);
449 int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba);
450 int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba);
451 int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
452 struct bnx2fc_rport *tgt);
453 int bnx2fc_send_session_disable_req(struct fcoe_port *port,
454 struct bnx2fc_rport *tgt);
455 int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba,
456 struct bnx2fc_rport *tgt);
457 int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt);
458 void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
460 int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba);
461 void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba);
462 int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba);
463 void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba);
464 struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba,
465 u16 min_xid, u16 max_xid);
466 void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr *cmgr);
467 void bnx2fc_get_link_state(struct bnx2fc_hba *hba);
468 char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items);
469 void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items);
470 int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen);
471 int bnx2fc_send_rrq(struct bnx2fc_cmd *aborted_io_req);
472 int bnx2fc_send_adisc(struct bnx2fc_rport *tgt, struct fc_frame *fp);
473 int bnx2fc_send_logo(struct bnx2fc_rport *tgt, struct fc_frame *fp);
474 int bnx2fc_send_rls(struct bnx2fc_rport *tgt, struct fc_frame *fp);
475 int bnx2fc_initiate_cleanup(struct bnx2fc_cmd *io_req);
476 int bnx2fc_initiate_abts(struct bnx2fc_cmd *io_req);
477 void bnx2fc_cmd_timer_set(struct bnx2fc_cmd *io_req,
478 unsigned int timer_msec);
479 int bnx2fc_init_mp_req(struct bnx2fc_cmd *io_req);
480 void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
481 struct fcoe_task_ctx_entry *task,
483 void bnx2fc_init_seq_cleanup_task(struct bnx2fc_cmd *seq_clnup_req,
484 struct fcoe_task_ctx_entry *task,
485 struct bnx2fc_cmd *orig_io_req,
487 void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
488 struct fcoe_task_ctx_entry *task);
489 void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
490 struct fcoe_task_ctx_entry *task);
491 void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid);
492 void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt);
493 int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd);
494 int bnx2fc_eh_host_reset(struct scsi_cmnd *sc_cmd);
495 int bnx2fc_eh_target_reset(struct scsi_cmnd *sc_cmd);
496 int bnx2fc_eh_device_reset(struct scsi_cmnd *sc_cmd);
497 void bnx2fc_rport_event_handler(struct fc_lport *lport,
498 struct fc_rport_priv *rport,
499 enum fc_rport_event event);
500 void bnx2fc_process_scsi_cmd_compl(struct bnx2fc_cmd *io_req,
501 struct fcoe_task_ctx_entry *task,
503 void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd *io_req,
504 struct fcoe_task_ctx_entry *task,
506 void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req,
507 struct fcoe_task_ctx_entry *task,
509 void bnx2fc_process_tm_compl(struct bnx2fc_cmd *io_req,
510 struct fcoe_task_ctx_entry *task,
512 void bnx2fc_process_els_compl(struct bnx2fc_cmd *els_req,
513 struct fcoe_task_ctx_entry *task,
515 void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd *io_req,
516 struct fcp_cmnd *fcp_cmnd);
520 void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt);
521 struct fc_seq *bnx2fc_elsct_send(struct fc_lport *lport, u32 did,
522 struct fc_frame *fp, unsigned int op,
523 void (*resp)(struct fc_seq *,
526 void *arg, u32 timeout);
527 void bnx2fc_arm_cq(struct bnx2fc_rport *tgt);
528 int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt);
529 void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe);
530 struct bnx2fc_rport *bnx2fc_tgt_lookup(struct fcoe_port *port,
532 void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
534 u32 frame_len, u16 l2_oxid);
535 int bnx2fc_send_stat_req(struct bnx2fc_hba *hba);
536 int bnx2fc_post_io_req(struct bnx2fc_rport *tgt, struct bnx2fc_cmd *io_req);
537 int bnx2fc_send_rec(struct bnx2fc_cmd *orig_io_req);
538 int bnx2fc_send_srr(struct bnx2fc_cmd *orig_io_req, u32 offset, u8 r_ctl);
539 void bnx2fc_process_seq_cleanup_compl(struct bnx2fc_cmd *seq_clnup_req,
540 struct fcoe_task_ctx_entry *task,
542 int bnx2fc_initiate_seq_cleanup(struct bnx2fc_cmd *orig_io_req, u32 offset,