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[SCSI] bnx2fc: Introduce interface structure for each vlan interface
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1 #ifndef _BNX2FC_H_
2 #define _BNX2FC_H_
3 /* bnx2fc.h: Broadcom NetXtreme II Linux FCoE offload driver.
4 *
5 * Copyright (c) 2008 - 2010 Broadcom Corporation
6 *
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.
10 *
11 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
12 */
13
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>
40 #include <linux/io.h>
41
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>
58
59 #include "57xx_hsi_bnx2fc.h"
60 #include "bnx2fc_debug.h"
61 #include "../../net/cnic_if.h"
62 #include "bnx2fc_constants.h"
63
64 #define BNX2FC_NAME "bnx2fc"
65 #define BNX2FC_VERSION "1.0.3"
66
67 #define PFX "bnx2fc: "
68
69 #define BNX2X_DOORBELL_PCI_BAR 2
70
71 #define BNX2FC_MAX_BD_LEN 0xffff
72 #define BNX2FC_BD_SPLIT_SZ 0x8000
73 #define BNX2FC_MAX_BDS_PER_CMD 256
74
75 #define BNX2FC_SQ_WQES_MAX 256
76
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)
80
81 #define BNX2FC_RQ_WQES_MAX 16
82 #define BNX2FC_CQ_WQES_MAX (BNX2FC_SQ_WQES_MAX + BNX2FC_RQ_WQES_MAX)
83
84 #define BNX2FC_NUM_MAX_SESS 128
85 #define BNX2FC_NUM_MAX_SESS_LOG (ilog2(BNX2FC_NUM_MAX_SESS))
86
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
92 #define BNX2FC_MFS \
93 (BNX2FC_MAX_PAYLOAD + sizeof(struct fc_frame_header))
94 #define BNX2FC_MINI_JUMBO_MTU 2500
95
96
97 #define BNX2FC_RQ_BUF_SZ 256
98 #define BNX2FC_RQ_BUF_LOG_SZ (ilog2(BNX2FC_RQ_BUF_SZ))
99
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
106
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)
112
113 #define BNX2FC_MAX_ROWS_IN_HASH_TBL 8
114 #define BNX2FC_HASH_TBL_CHUNK_SIZE (16 * 1024)
115
116 #define BNX2FC_MAX_SEQS 255
117
118 #define BNX2FC_READ (1 << 1)
119 #define BNX2FC_WRITE (1 << 0)
120
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
129
130 #define BNX2FC_TM_TIMEOUT 60 /* secs */
131 #define BNX2FC_IO_TIMEOUT 20000UL /* msecs */
132
133 #define BNX2FC_WAIT_CNT 1200
134 #define BNX2FC_FW_TIMEOUT (3 * HZ)
135 #define PORT_MAX 2
136
137 #define CMD_SCSI_STATUS(Cmnd) ((Cmnd)->SCp.Status)
138
139 /* FC FCP Status */
140 #define FC_GOOD 0
141
142 #define BNX2FC_RNID_HBA 0x7
143
144 /* bnx2fc driver uses only one instance of fcoe_percpu_s */
145 extern struct fcoe_percpu_s bnx2fc_global;
146
147 extern struct workqueue_struct *bnx2fc_wq;
148
149 struct bnx2fc_percpu_s {
150 struct task_struct *iothread;
151 struct list_head work_list;
152 spinlock_t fp_work_lock;
153 };
154
155 struct bnx2fc_hba {
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;
163 spinlock_t hba_lock;
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
170 unsigned long flags;
171 #define BNX2FC_FLAG_FW_INIT_DONE 0
172 #define BNX2FC_FLAG_DESTROY_CMPL 1
173 u32 next_conn_id;
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;
178
179 int hash_tbl_segment_count;
180 void **hash_tbl_segments;
181 void *hash_tbl_pbl;
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;
187
188 char *dummy_buffer;
189 dma_addr_t dummy_buf_dma;
190
191 /* Active list of offloaded sessions */
192 struct bnx2fc_rport **tgt_ofld_list;
193
194 /* statistics */
195 struct fcoe_statistics_params *stats_buffer;
196 dma_addr_t stats_buf_dma;
197 struct completion stat_req_done;
198
199 /*destroy handling */
200 struct timer_list destroy_timer;
201 wait_queue_head_t destroy_wait;
202
203 /* linkdown handling */
204 wait_queue_head_t shutdown_wait;
205 int wait_for_link_down;
206 int num_ofld_sess;
207 struct list_head vports;
208 };
209
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;
219 struct kref kref;
220 struct fcoe_ctlr ctlr;
221 u8 vlan_enabled;
222 int vlan_id;
223 };
224
225 #define bnx2fc_from_ctlr(fip) container_of(fip, struct bnx2fc_interface, ctlr)
226
227 struct bnx2fc_lport {
228 struct list_head list;
229 struct fc_lport *lport;
230 };
231
232 struct bnx2fc_cmd_mgr {
233 struct bnx2fc_hba *hba;
234 u16 next_idx;
235 struct list_head *free_list;
236 spinlock_t *free_list_lock;
237 struct io_bdt **io_bdt_pool;
238 struct bnx2fc_cmd **cmds;
239 };
240
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
247 u32 fcoe_conn_id;
248 u32 context_id;
249 u32 sid;
250
251 unsigned long flags;
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
260
261 u8 src_addr[ETH_ALEN];
262 u32 max_sqes;
263 u32 max_rqes;
264 u32 max_cqes;
265 atomic_t free_sqes;
266
267 struct b577xx_doorbell_set_prod sq_db;
268 struct b577xx_fcoe_rx_doorbell rx_db;
269
270 struct fcoe_sqe *sq;
271 dma_addr_t sq_dma;
272 u16 sq_prod_idx;
273 u8 sq_curr_toggle_bit;
274 u32 sq_mem_size;
275
276 struct fcoe_cqe *cq;
277 dma_addr_t cq_dma;
278 u16 cq_cons_idx;
279 u8 cq_curr_toggle_bit;
280 u32 cq_mem_size;
281
282 void *rq;
283 dma_addr_t rq_dma;
284 u32 rq_prod_idx;
285 u32 rq_cons_idx;
286 u32 rq_mem_size;
287
288 void *rq_pbl;
289 dma_addr_t rq_pbl_dma;
290 u32 rq_pbl_size;
291
292 struct fcoe_xfrqe *xferq;
293 dma_addr_t xferq_dma;
294 u32 xferq_mem_size;
295
296 struct fcoe_confqe *confq;
297 dma_addr_t confq_dma;
298 u32 confq_mem_size;
299
300 void *confq_pbl;
301 dma_addr_t confq_pbl_dma;
302 u32 confq_pbl_size;
303
304 struct fcoe_conn_db *conn_db;
305 dma_addr_t conn_db_dma;
306 u32 conn_db_mem_size;
307
308 struct fcoe_sqe *lcq;
309 dma_addr_t lcq_dma;
310 u32 lcq_mem_size;
311
312 void *ofld_req[4];
313 dma_addr_t ofld_req_dma[4];
314 void *enbl_req;
315 dma_addr_t enbl_req_dma;
316
317 spinlock_t tgt_lock;
318 spinlock_t cq_lock;
319 atomic_t num_active_ios;
320 u32 flush_in_prog;
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;
328
329 struct timer_list ofld_timer;
330 wait_queue_head_t ofld_wait;
331
332 struct timer_list upld_timer;
333 wait_queue_head_t upld_wait;
334 };
335
336 struct bnx2fc_mp_req {
337 u8 tm_flags;
338
339 u32 req_len;
340 void *req_buf;
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;
345
346 u32 resp_len;
347 void *resp_buf;
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;
352 };
353
354 struct bnx2fc_els_cb_arg {
355 struct bnx2fc_cmd *aborted_io_req;
356 struct bnx2fc_cmd *io_req;
357 u16 l2_oxid;
358 };
359
360 /* bnx2fc command structure */
361 struct bnx2fc_cmd {
362 struct list_head link;
363 u8 on_active_queue;
364 u8 on_tmf_queue;
365 u8 cmd_type;
366 #define BNX2FC_SCSI_CMD 1
367 #define BNX2FC_TASK_MGMT_CMD 2
368 #define BNX2FC_ABTS 3
369 #define BNX2FC_ELS 4
370 #define BNX2FC_CLEANUP 5
371 u8 io_req_flags;
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;
382 int wait_for_comp;
383 u16 xid;
384 struct fcoe_task_ctx_entry *task;
385 struct io_bdt *bd_tbl;
386 struct fcp_rsp *rsp;
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
400 u32 fcp_resid;
401 u32 fcp_rsp_len;
402 u32 fcp_sns_len;
403 u8 cdb_status; /* SCSI IO status */
404 u8 fcp_status; /* FCP IO status */
405 u8 fcp_rsp_code;
406 u8 scsi_comp_flags;
407 };
408
409 struct io_bdt {
410 struct bnx2fc_cmd *io_req;
411 struct fcoe_bd_ctx *bd_tbl;
412 dma_addr_t bd_tbl_dma;
413 u16 bd_valid;
414 };
415
416 struct bnx2fc_work {
417 struct list_head list;
418 struct bnx2fc_rport *tgt;
419 u16 wqe;
420 };
421 struct bnx2fc_unsol_els {
422 struct fc_lport *lport;
423 struct fc_frame *fp;
424 struct bnx2fc_hba *hba;
425 struct work_struct unsol_els_work;
426 };
427
428
429
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[],
443 u32 num_cqe);
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,
466 u16 orig_xid);
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,
482 u8 num_rq);
483 void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd *io_req,
484 struct fcoe_task_ctx_entry *task,
485 u8 num_rq);
486 void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req,
487 struct fcoe_task_ctx_entry *task,
488 u8 num_rq);
489 void bnx2fc_process_tm_compl(struct bnx2fc_cmd *io_req,
490 struct fcoe_task_ctx_entry *task,
491 u8 num_rq);
492 void bnx2fc_process_els_compl(struct bnx2fc_cmd *els_req,
493 struct fcoe_task_ctx_entry *task,
494 u8 num_rq);
495 void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd *io_req,
496 struct fcp_cmnd *fcp_cmnd);
497
498
499
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 *,
504 struct fc_frame *,
505 void *),
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,
511 u32 port_id);
512 void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
513 unsigned char *buf,
514 u32 frame_len, u16 l2_oxid);
515 int bnx2fc_send_stat_req(struct bnx2fc_hba *hba);
516
517 #endif