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 /* bnx2fc driver uses only one instance of fcoe_percpu_s */
145 extern struct fcoe_percpu_s bnx2fc_global
;
147 extern struct workqueue_struct
*bnx2fc_wq
;
149 struct bnx2fc_percpu_s
{
150 struct task_struct
*iothread
;
151 struct list_head work_list
;
152 spinlock_t fp_work_lock
;
156 struct list_head list
;
157 struct cnic_dev
*cnic
;
158 struct pci_dev
*pcidev
;
159 struct net_device
*phys_dev
;
160 unsigned long reg_with_cnic
;
161 #define BNX2FC_CNIC_REGISTERED 1
162 struct bnx2fc_cmd_mgr
*cmd_mgr
;
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
171 #define BNX2FC_FLAG_FW_INIT_DONE 0
172 #define BNX2FC_FLAG_DESTROY_CMPL 1
174 struct fcoe_task_ctx_entry
**task_ctx
;
175 dma_addr_t
*task_ctx_dma
;
176 struct regpair
*task_ctx_bd_tbl
;
177 dma_addr_t task_ctx_bd_dma
;
179 int hash_tbl_segment_count
;
180 void **hash_tbl_segments
;
182 dma_addr_t hash_tbl_pbl_dma
;
183 struct fcoe_t2_hash_table_entry
*t2_hash_tbl
;
184 dma_addr_t t2_hash_tbl_dma
;
185 char *t2_hash_tbl_ptr
;
186 dma_addr_t t2_hash_tbl_ptr_dma
;
189 dma_addr_t dummy_buf_dma
;
191 /* Active list of offloaded sessions */
192 struct bnx2fc_rport
**tgt_ofld_list
;
195 struct fcoe_statistics_params
*stats_buffer
;
196 dma_addr_t stats_buf_dma
;
197 struct completion stat_req_done
;
199 /*destroy handling */
200 struct timer_list destroy_timer
;
201 wait_queue_head_t destroy_wait
;
203 /* linkdown handling */
204 wait_queue_head_t shutdown_wait
;
205 int wait_for_link_down
;
207 struct list_head vports
;
210 struct bnx2fc_interface
{
211 struct list_head list
;
212 unsigned long if_flags
;
213 #define BNX2FC_CTLR_INIT_DONE 0
214 struct bnx2fc_hba
*hba
;
215 struct net_device
*netdev
;
216 struct packet_type fcoe_packet_type
;
217 struct packet_type fip_packet_type
;
218 struct workqueue_struct
*timer_work_queue
;
220 struct fcoe_ctlr ctlr
;
225 #define bnx2fc_from_ctlr(fip) container_of(fip, struct bnx2fc_interface, ctlr)
227 struct bnx2fc_lport
{
228 struct list_head list
;
229 struct fc_lport
*lport
;
232 struct bnx2fc_cmd_mgr
{
233 struct bnx2fc_hba
*hba
;
235 struct list_head
*free_list
;
236 spinlock_t
*free_list_lock
;
237 struct io_bdt
**io_bdt_pool
;
238 struct bnx2fc_cmd
**cmds
;
241 struct bnx2fc_rport
{
242 struct fcoe_port
*port
;
243 struct fc_rport
*rport
;
244 struct fc_rport_priv
*rdata
;
245 void __iomem
*ctx_base
;
246 #define DPM_TRIGER_TYPE 0x40
252 #define BNX2FC_FLAG_SESSION_READY 0x1
253 #define BNX2FC_FLAG_OFFLOADED 0x2
254 #define BNX2FC_FLAG_DISABLED 0x3
255 #define BNX2FC_FLAG_DESTROYED 0x4
256 #define BNX2FC_FLAG_OFLD_REQ_CMPL 0x5
257 #define BNX2FC_FLAG_CTX_ALLOC_FAILURE 0x6
258 #define BNX2FC_FLAG_UPLD_REQ_COMPL 0x7
259 #define BNX2FC_FLAG_EXPL_LOGO 0x8
261 u8 src_addr
[ETH_ALEN
];
267 struct b577xx_doorbell_set_prod sq_db
;
268 struct b577xx_fcoe_rx_doorbell rx_db
;
273 u8 sq_curr_toggle_bit
;
279 u8 cq_curr_toggle_bit
;
289 dma_addr_t rq_pbl_dma
;
292 struct fcoe_xfrqe
*xferq
;
293 dma_addr_t xferq_dma
;
296 struct fcoe_confqe
*confq
;
297 dma_addr_t confq_dma
;
301 dma_addr_t confq_pbl_dma
;
304 struct fcoe_conn_db
*conn_db
;
305 dma_addr_t conn_db_dma
;
306 u32 conn_db_mem_size
;
308 struct fcoe_sqe
*lcq
;
313 dma_addr_t ofld_req_dma
[4];
315 dma_addr_t enbl_req_dma
;
319 atomic_t num_active_ios
;
321 unsigned long timestamp
;
322 struct list_head free_task_list
;
323 struct bnx2fc_cmd
*pending_queue
[BNX2FC_SQ_WQES_MAX
+1];
324 struct list_head active_cmd_queue
;
325 struct list_head els_queue
;
326 struct list_head io_retire_queue
;
327 struct list_head active_tm_queue
;
329 struct timer_list ofld_timer
;
330 wait_queue_head_t ofld_wait
;
332 struct timer_list upld_timer
;
333 wait_queue_head_t upld_wait
;
336 struct bnx2fc_mp_req
{
341 dma_addr_t req_buf_dma
;
342 struct fcoe_bd_ctx
*mp_req_bd
;
343 dma_addr_t mp_req_bd_dma
;
344 struct fc_frame_header req_fc_hdr
;
348 dma_addr_t resp_buf_dma
;
349 struct fcoe_bd_ctx
*mp_resp_bd
;
350 dma_addr_t mp_resp_bd_dma
;
351 struct fc_frame_header resp_fc_hdr
;
354 struct bnx2fc_els_cb_arg
{
355 struct bnx2fc_cmd
*aborted_io_req
;
356 struct bnx2fc_cmd
*io_req
;
360 /* bnx2fc command structure */
362 struct list_head link
;
366 #define BNX2FC_SCSI_CMD 1
367 #define BNX2FC_TASK_MGMT_CMD 2
368 #define BNX2FC_ABTS 3
370 #define BNX2FC_CLEANUP 5
372 struct kref refcount
;
373 struct fcoe_port
*port
;
374 struct bnx2fc_rport
*tgt
;
375 struct scsi_cmnd
*sc_cmd
;
376 struct bnx2fc_cmd_mgr
*cmd_mgr
;
377 struct bnx2fc_mp_req mp_req
;
378 void (*cb_func
)(struct bnx2fc_els_cb_arg
*cb_arg
);
379 struct bnx2fc_els_cb_arg
*cb_arg
;
380 struct delayed_work timeout_work
; /* timer for ULP timeouts */
381 struct completion tm_done
;
384 struct fcoe_task_ctx_entry
*task
;
385 struct io_bdt
*bd_tbl
;
387 size_t data_xfer_len
;
388 unsigned long req_flags
;
389 #define BNX2FC_FLAG_ISSUE_RRQ 0x1
390 #define BNX2FC_FLAG_ISSUE_ABTS 0x2
391 #define BNX2FC_FLAG_ABTS_DONE 0x3
392 #define BNX2FC_FLAG_TM_COMPL 0x4
393 #define BNX2FC_FLAG_TM_TIMEOUT 0x5
394 #define BNX2FC_FLAG_IO_CLEANUP 0x6
395 #define BNX2FC_FLAG_RETIRE_OXID 0x7
396 #define BNX2FC_FLAG_EH_ABORT 0x8
397 #define BNX2FC_FLAG_IO_COMPL 0x9
398 #define BNX2FC_FLAG_ELS_DONE 0xa
399 #define BNX2FC_FLAG_ELS_TIMEOUT 0xb
403 u8 cdb_status
; /* SCSI IO status */
404 u8 fcp_status
; /* FCP IO status */
410 struct bnx2fc_cmd
*io_req
;
411 struct fcoe_bd_ctx
*bd_tbl
;
412 dma_addr_t bd_tbl_dma
;
417 struct list_head list
;
418 struct bnx2fc_rport
*tgt
;
421 struct bnx2fc_unsol_els
{
422 struct fc_lport
*lport
;
424 struct bnx2fc_hba
*hba
;
425 struct work_struct unsol_els_work
;
430 struct bnx2fc_cmd
*bnx2fc_elstm_alloc(struct bnx2fc_rport
*tgt
, int type
);
431 void bnx2fc_cmd_release(struct kref
*ref
);
432 int bnx2fc_queuecommand(struct Scsi_Host
*host
, struct scsi_cmnd
*sc_cmd
);
433 int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba
*hba
);
434 int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba
*hba
);
435 int bnx2fc_send_session_ofld_req(struct fcoe_port
*port
,
436 struct bnx2fc_rport
*tgt
);
437 int bnx2fc_send_session_disable_req(struct fcoe_port
*port
,
438 struct bnx2fc_rport
*tgt
);
439 int bnx2fc_send_session_destroy_req(struct bnx2fc_hba
*hba
,
440 struct bnx2fc_rport
*tgt
);
441 int bnx2fc_map_doorbell(struct bnx2fc_rport
*tgt
);
442 void bnx2fc_indicate_kcqe(void *context
, struct kcqe
*kcq
[],
444 int bnx2fc_setup_task_ctx(struct bnx2fc_hba
*hba
);
445 void bnx2fc_free_task_ctx(struct bnx2fc_hba
*hba
);
446 int bnx2fc_setup_fw_resc(struct bnx2fc_hba
*hba
);
447 void bnx2fc_free_fw_resc(struct bnx2fc_hba
*hba
);
448 struct bnx2fc_cmd_mgr
*bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba
*hba
,
449 u16 min_xid
, u16 max_xid
);
450 void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr
*cmgr
);
451 void bnx2fc_get_link_state(struct bnx2fc_hba
*hba
);
452 char *bnx2fc_get_next_rqe(struct bnx2fc_rport
*tgt
, u8 num_items
);
453 void bnx2fc_return_rqe(struct bnx2fc_rport
*tgt
, u8 num_items
);
454 int bnx2fc_get_paged_crc_eof(struct sk_buff
*skb
, int tlen
);
455 int bnx2fc_send_rrq(struct bnx2fc_cmd
*aborted_io_req
);
456 int bnx2fc_send_adisc(struct bnx2fc_rport
*tgt
, struct fc_frame
*fp
);
457 int bnx2fc_send_logo(struct bnx2fc_rport
*tgt
, struct fc_frame
*fp
);
458 int bnx2fc_send_rls(struct bnx2fc_rport
*tgt
, struct fc_frame
*fp
);
459 int bnx2fc_initiate_cleanup(struct bnx2fc_cmd
*io_req
);
460 int bnx2fc_initiate_abts(struct bnx2fc_cmd
*io_req
);
461 void bnx2fc_cmd_timer_set(struct bnx2fc_cmd
*io_req
,
462 unsigned int timer_msec
);
463 int bnx2fc_init_mp_req(struct bnx2fc_cmd
*io_req
);
464 void bnx2fc_init_cleanup_task(struct bnx2fc_cmd
*io_req
,
465 struct fcoe_task_ctx_entry
*task
,
467 void bnx2fc_init_mp_task(struct bnx2fc_cmd
*io_req
,
468 struct fcoe_task_ctx_entry
*task
);
469 void bnx2fc_init_task(struct bnx2fc_cmd
*io_req
,
470 struct fcoe_task_ctx_entry
*task
);
471 void bnx2fc_add_2_sq(struct bnx2fc_rport
*tgt
, u16 xid
);
472 void bnx2fc_ring_doorbell(struct bnx2fc_rport
*tgt
);
473 int bnx2fc_eh_abort(struct scsi_cmnd
*sc_cmd
);
474 int bnx2fc_eh_host_reset(struct scsi_cmnd
*sc_cmd
);
475 int bnx2fc_eh_target_reset(struct scsi_cmnd
*sc_cmd
);
476 int bnx2fc_eh_device_reset(struct scsi_cmnd
*sc_cmd
);
477 void bnx2fc_rport_event_handler(struct fc_lport
*lport
,
478 struct fc_rport_priv
*rport
,
479 enum fc_rport_event event
);
480 void bnx2fc_process_scsi_cmd_compl(struct bnx2fc_cmd
*io_req
,
481 struct fcoe_task_ctx_entry
*task
,
483 void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd
*io_req
,
484 struct fcoe_task_ctx_entry
*task
,
486 void bnx2fc_process_abts_compl(struct bnx2fc_cmd
*io_req
,
487 struct fcoe_task_ctx_entry
*task
,
489 void bnx2fc_process_tm_compl(struct bnx2fc_cmd
*io_req
,
490 struct fcoe_task_ctx_entry
*task
,
492 void bnx2fc_process_els_compl(struct bnx2fc_cmd
*els_req
,
493 struct fcoe_task_ctx_entry
*task
,
495 void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd
*io_req
,
496 struct fcp_cmnd
*fcp_cmnd
);
500 void bnx2fc_flush_active_ios(struct bnx2fc_rport
*tgt
);
501 struct fc_seq
*bnx2fc_elsct_send(struct fc_lport
*lport
, u32 did
,
502 struct fc_frame
*fp
, unsigned int op
,
503 void (*resp
)(struct fc_seq
*,
506 void *arg
, u32 timeout
);
507 void bnx2fc_arm_cq(struct bnx2fc_rport
*tgt
);
508 int bnx2fc_process_new_cqes(struct bnx2fc_rport
*tgt
);
509 void bnx2fc_process_cq_compl(struct bnx2fc_rport
*tgt
, u16 wqe
);
510 struct bnx2fc_rport
*bnx2fc_tgt_lookup(struct fcoe_port
*port
,
512 void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport
*tgt
,
514 u32 frame_len
, u16 l2_oxid
);
515 int bnx2fc_send_stat_req(struct bnx2fc_hba
*hba
);