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-rw-r--r--drivers/scsi/bnx2fc/bnx2fc.h511
1 files changed, 511 insertions, 0 deletions
diff --git a/drivers/scsi/bnx2fc/bnx2fc.h b/drivers/scsi/bnx2fc/bnx2fc.h
new file mode 100644
index 000000000000..df2fc09ba479
--- /dev/null
+++ b/drivers/scsi/bnx2fc/bnx2fc.h
@@ -0,0 +1,511 @@
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 "1.0.0"
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 4096
88#define BNX2FC_MIN_PAYLOAD 256
89#define BNX2FC_MAX_PAYLOAD 2048
90
91#define BNX2FC_RQ_BUF_SZ 256
92#define BNX2FC_RQ_BUF_LOG_SZ (ilog2(BNX2FC_RQ_BUF_SZ))
93
94#define BNX2FC_SQ_WQE_SIZE (sizeof(struct fcoe_sqe))
95#define BNX2FC_CQ_WQE_SIZE (sizeof(struct fcoe_cqe))
96#define BNX2FC_RQ_WQE_SIZE (BNX2FC_RQ_BUF_SZ)
97#define BNX2FC_XFERQ_WQE_SIZE (sizeof(struct fcoe_xfrqe))
98#define BNX2FC_CONFQ_WQE_SIZE (sizeof(struct fcoe_confqe))
99#define BNX2FC_5771X_DB_PAGE_SIZE 128
100
101#define BNX2FC_MAX_TASKS BNX2FC_MAX_OUTSTANDING_CMNDS
102#define BNX2FC_TASK_SIZE 128
103#define BNX2FC_TASKS_PER_PAGE (PAGE_SIZE/BNX2FC_TASK_SIZE)
104#define BNX2FC_TASK_CTX_ARR_SZ (BNX2FC_MAX_TASKS/BNX2FC_TASKS_PER_PAGE)
105
106#define BNX2FC_MAX_ROWS_IN_HASH_TBL 8
107#define BNX2FC_HASH_TBL_CHUNK_SIZE (16 * 1024)
108
109#define BNX2FC_MAX_SEQS 255
110
111#define BNX2FC_READ (1 << 1)
112#define BNX2FC_WRITE (1 << 0)
113
114#define BNX2FC_MIN_XID 0
115#define BNX2FC_MAX_XID (BNX2FC_MAX_OUTSTANDING_CMNDS - 1)
116#define FCOE_MIN_XID (BNX2FC_MAX_OUTSTANDING_CMNDS)
117#define FCOE_MAX_XID \
118 (BNX2FC_MAX_OUTSTANDING_CMNDS + (nr_cpu_ids * 256))
119#define BNX2FC_MAX_LUN 0xFFFF
120#define BNX2FC_MAX_FCP_TGT 256
121#define BNX2FC_MAX_CMD_LEN 16
122
123#define BNX2FC_TM_TIMEOUT 60 /* secs */
124#define BNX2FC_IO_TIMEOUT 20000UL /* msecs */
125
126#define BNX2FC_WAIT_CNT 120
127#define BNX2FC_FW_TIMEOUT (3 * HZ)
128
129#define PORT_MAX 2
130
131#define CMD_SCSI_STATUS(Cmnd) ((Cmnd)->SCp.Status)
132
133/* FC FCP Status */
134#define FC_GOOD 0
135
136#define BNX2FC_RNID_HBA 0x7
137
138/* bnx2fc driver uses only one instance of fcoe_percpu_s */
139extern struct fcoe_percpu_s bnx2fc_global;
140
141extern struct workqueue_struct *bnx2fc_wq;
142
143struct bnx2fc_percpu_s {
144 struct task_struct *iothread;
145 struct list_head work_list;
146 spinlock_t fp_work_lock;
147};
148
149
150struct bnx2fc_hba {
151 struct list_head link;
152 struct cnic_dev *cnic;
153 struct pci_dev *pcidev;
154 struct net_device *netdev;
155 struct net_device *phys_dev;
156 unsigned long reg_with_cnic;
157 #define BNX2FC_CNIC_REGISTERED 1
158 struct packet_type fcoe_packet_type;
159 struct packet_type fip_packet_type;
160 struct bnx2fc_cmd_mgr *cmd_mgr;
161 struct workqueue_struct *timer_work_queue;
162 struct kref kref;
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 u32 flags;
171 unsigned long init_done;
172 #define BNX2FC_FW_INIT_DONE 0
173 #define BNX2FC_CTLR_INIT_DONE 1
174 #define BNX2FC_CREATE_DONE 2
175 struct fcoe_ctlr ctlr;
176 u8 vlan_enabled;
177 int vlan_id;
178 u32 next_conn_id;
179 struct fcoe_task_ctx_entry **task_ctx;
180 dma_addr_t *task_ctx_dma;
181 struct regpair *task_ctx_bd_tbl;
182 dma_addr_t task_ctx_bd_dma;
183
184 int hash_tbl_segment_count;
185 void **hash_tbl_segments;
186 void *hash_tbl_pbl;
187 dma_addr_t hash_tbl_pbl_dma;
188 struct fcoe_t2_hash_table_entry *t2_hash_tbl;
189 dma_addr_t t2_hash_tbl_dma;
190 char *t2_hash_tbl_ptr;
191 dma_addr_t t2_hash_tbl_ptr_dma;
192
193 char *dummy_buffer;
194 dma_addr_t dummy_buf_dma;
195
196 struct fcoe_statistics_params *stats_buffer;
197 dma_addr_t stats_buf_dma;
198
199 /*
200 * PCI related info.
201 */
202 u16 pci_did;
203 u16 pci_vid;
204 u16 pci_sdid;
205 u16 pci_svid;
206 u16 pci_func;
207 u16 pci_devno;
208
209 struct task_struct *l2_thread;
210
211 /* linkdown handling */
212 wait_queue_head_t shutdown_wait;
213 int wait_for_link_down;
214
215 /*destroy handling */
216 struct timer_list destroy_timer;
217 wait_queue_head_t destroy_wait;
218
219 /* Active list of offloaded sessions */
220 struct bnx2fc_rport *tgt_ofld_list[BNX2FC_NUM_MAX_SESS];
221 int num_ofld_sess;
222
223 /* statistics */
224 struct completion stat_req_done;
225};
226
227#define bnx2fc_from_ctlr(fip) container_of(fip, struct bnx2fc_hba, ctlr)
228
229struct bnx2fc_cmd_mgr {
230 struct bnx2fc_hba *hba;
231 u16 next_idx;
232 struct list_head *free_list;
233 spinlock_t *free_list_lock;
234 struct io_bdt **io_bdt_pool;
235 struct bnx2fc_cmd **cmds;
236};
237
238struct bnx2fc_rport {
239 struct fcoe_port *port;
240 struct fc_rport *rport;
241 struct fc_rport_priv *rdata;
242 void __iomem *ctx_base;
243#define DPM_TRIGER_TYPE 0x40
244 u32 fcoe_conn_id;
245 u32 context_id;
246 u32 sid;
247
248 unsigned long flags;
249#define BNX2FC_FLAG_SESSION_READY 0x1
250#define BNX2FC_FLAG_OFFLOADED 0x2
251#define BNX2FC_FLAG_DISABLED 0x3
252#define BNX2FC_FLAG_DESTROYED 0x4
253#define BNX2FC_FLAG_OFLD_REQ_CMPL 0x5
254#define BNX2FC_FLAG_DESTROY_CMPL 0x6
255#define BNX2FC_FLAG_CTX_ALLOC_FAILURE 0x7
256#define BNX2FC_FLAG_UPLD_REQ_COMPL 0x8
257#define BNX2FC_FLAG_EXPL_LOGO 0x9
258
259 u32 max_sqes;
260 u32 max_rqes;
261 u32 max_cqes;
262
263 struct fcoe_sqe *sq;
264 dma_addr_t sq_dma;
265 u16 sq_prod_idx;
266 u8 sq_curr_toggle_bit;
267 u32 sq_mem_size;
268
269 struct fcoe_cqe *cq;
270 dma_addr_t cq_dma;
271 u32 cq_cons_idx;
272 u8 cq_curr_toggle_bit;
273 u32 cq_mem_size;
274
275 void *rq;
276 dma_addr_t rq_dma;
277 u32 rq_prod_idx;
278 u32 rq_cons_idx;
279 u32 rq_mem_size;
280
281 void *rq_pbl;
282 dma_addr_t rq_pbl_dma;
283 u32 rq_pbl_size;
284
285 struct fcoe_xfrqe *xferq;
286 dma_addr_t xferq_dma;
287 u32 xferq_mem_size;
288
289 struct fcoe_confqe *confq;
290 dma_addr_t confq_dma;
291 u32 confq_mem_size;
292
293 void *confq_pbl;
294 dma_addr_t confq_pbl_dma;
295 u32 confq_pbl_size;
296
297 struct fcoe_conn_db *conn_db;
298 dma_addr_t conn_db_dma;
299 u32 conn_db_mem_size;
300
301 struct fcoe_sqe *lcq;
302 dma_addr_t lcq_dma;
303 u32 lcq_mem_size;
304
305 void *ofld_req[4];
306 dma_addr_t ofld_req_dma[4];
307 void *enbl_req;
308 dma_addr_t enbl_req_dma;
309
310 spinlock_t tgt_lock;
311 spinlock_t cq_lock;
312 atomic_t num_active_ios;
313 u32 flush_in_prog;
314 unsigned long work_time_slice;
315 unsigned long timestamp;
316 struct list_head free_task_list;
317 struct bnx2fc_cmd *pending_queue[BNX2FC_SQ_WQES_MAX+1];
318 atomic_t pi;
319 atomic_t ci;
320 struct list_head active_cmd_queue;
321 struct list_head els_queue;
322 struct list_head io_retire_queue;
323 struct list_head active_tm_queue;
324
325 struct timer_list ofld_timer;
326 wait_queue_head_t ofld_wait;
327
328 struct timer_list upld_timer;
329 wait_queue_head_t upld_wait;
330};
331
332struct bnx2fc_mp_req {
333 u8 tm_flags;
334
335 u32 req_len;
336 void *req_buf;
337 dma_addr_t req_buf_dma;
338 struct fcoe_bd_ctx *mp_req_bd;
339 dma_addr_t mp_req_bd_dma;
340 struct fc_frame_header req_fc_hdr;
341
342 u32 resp_len;
343 void *resp_buf;
344 dma_addr_t resp_buf_dma;
345 struct fcoe_bd_ctx *mp_resp_bd;
346 dma_addr_t mp_resp_bd_dma;
347 struct fc_frame_header resp_fc_hdr;
348};
349
350struct bnx2fc_els_cb_arg {
351 struct bnx2fc_cmd *aborted_io_req;
352 struct bnx2fc_cmd *io_req;
353 u16 l2_oxid;
354};
355
356/* bnx2fc command structure */
357struct bnx2fc_cmd {
358 struct list_head link;
359 u8 on_active_queue;
360 u8 on_tmf_queue;
361 u8 cmd_type;
362#define BNX2FC_SCSI_CMD 1
363#define BNX2FC_TASK_MGMT_CMD 2
364#define BNX2FC_ABTS 3
365#define BNX2FC_ELS 4
366#define BNX2FC_CLEANUP 5
367 u8 io_req_flags;
368 struct kref refcount;
369 struct fcoe_port *port;
370 struct bnx2fc_rport *tgt;
371 struct scsi_cmnd *sc_cmd;
372 struct bnx2fc_cmd_mgr *cmd_mgr;
373 struct bnx2fc_mp_req mp_req;
374 void (*cb_func)(struct bnx2fc_els_cb_arg *cb_arg);
375 struct bnx2fc_els_cb_arg *cb_arg;
376 struct delayed_work timeout_work; /* timer for ULP timeouts */
377 struct completion tm_done;
378 int wait_for_comp;
379 u16 xid;
380 struct fcoe_task_ctx_entry *task;
381 struct io_bdt *bd_tbl;
382 struct fcp_rsp *rsp;
383 size_t data_xfer_len;
384 unsigned long req_flags;
385#define BNX2FC_FLAG_ISSUE_RRQ 0x1
386#define BNX2FC_FLAG_ISSUE_ABTS 0x2
387#define BNX2FC_FLAG_ABTS_DONE 0x3
388#define BNX2FC_FLAG_TM_COMPL 0x4
389#define BNX2FC_FLAG_TM_TIMEOUT 0x5
390#define BNX2FC_FLAG_IO_CLEANUP 0x6
391#define BNX2FC_FLAG_RETIRE_OXID 0x7
392#define BNX2FC_FLAG_EH_ABORT 0x8
393#define BNX2FC_FLAG_IO_COMPL 0x9
394#define BNX2FC_FLAG_ELS_DONE 0xa
395#define BNX2FC_FLAG_ELS_TIMEOUT 0xb
396 u32 fcp_resid;
397 u32 fcp_rsp_len;
398 u32 fcp_sns_len;
399 u8 cdb_status; /* SCSI IO status */
400 u8 fcp_status; /* FCP IO status */
401 u8 fcp_rsp_code;
402 u8 scsi_comp_flags;
403};
404
405struct io_bdt {
406 struct bnx2fc_cmd *io_req;
407 struct fcoe_bd_ctx *bd_tbl;
408 dma_addr_t bd_tbl_dma;
409 u16 bd_valid;
410};
411
412struct bnx2fc_work {
413 struct list_head list;
414 struct bnx2fc_rport *tgt;
415 u16 wqe;
416};
417struct bnx2fc_unsol_els {
418 struct fc_lport *lport;
419 struct fc_frame *fp;
420 struct work_struct unsol_els_work;
421};
422
423
424
425struct bnx2fc_cmd *bnx2fc_elstm_alloc(struct bnx2fc_rport *tgt, int type);
426void bnx2fc_cmd_release(struct kref *ref);
427int bnx2fc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc_cmd);
428int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba);
429int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba);
430int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
431 struct bnx2fc_rport *tgt);
432int bnx2fc_send_session_disable_req(struct fcoe_port *port,
433 struct bnx2fc_rport *tgt);
434int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba,
435 struct bnx2fc_rport *tgt);
436int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt);
437void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
438 u32 num_cqe);
439int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba);
440void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba);
441int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba);
442void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba);
443struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba,
444 u16 min_xid, u16 max_xid);
445void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr *cmgr);
446void bnx2fc_get_link_state(struct bnx2fc_hba *hba);
447char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items);
448void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items);
449int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen);
450int bnx2fc_send_rrq(struct bnx2fc_cmd *aborted_io_req);
451int bnx2fc_send_adisc(struct bnx2fc_rport *tgt, struct fc_frame *fp);
452int bnx2fc_send_logo(struct bnx2fc_rport *tgt, struct fc_frame *fp);
453int bnx2fc_send_rls(struct bnx2fc_rport *tgt, struct fc_frame *fp);
454int bnx2fc_initiate_cleanup(struct bnx2fc_cmd *io_req);
455int bnx2fc_initiate_abts(struct bnx2fc_cmd *io_req);
456void bnx2fc_cmd_timer_set(struct bnx2fc_cmd *io_req,
457 unsigned int timer_msec);
458int bnx2fc_init_mp_req(struct bnx2fc_cmd *io_req);
459void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
460 struct fcoe_task_ctx_entry *task,
461 u16 orig_xid);
462void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
463 struct fcoe_task_ctx_entry *task);
464void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
465 struct fcoe_task_ctx_entry *task);
466void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid);
467void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt);
468int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd);
469int bnx2fc_eh_host_reset(struct scsi_cmnd *sc_cmd);
470int bnx2fc_eh_target_reset(struct scsi_cmnd *sc_cmd);
471int bnx2fc_eh_device_reset(struct scsi_cmnd *sc_cmd);
472void bnx2fc_rport_event_handler(struct fc_lport *lport,
473 struct fc_rport_priv *rport,
474 enum fc_rport_event event);
475void bnx2fc_process_scsi_cmd_compl(struct bnx2fc_cmd *io_req,
476 struct fcoe_task_ctx_entry *task,
477 u8 num_rq);
478void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd *io_req,
479 struct fcoe_task_ctx_entry *task,
480 u8 num_rq);
481void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req,
482 struct fcoe_task_ctx_entry *task,
483 u8 num_rq);
484void bnx2fc_process_tm_compl(struct bnx2fc_cmd *io_req,
485 struct fcoe_task_ctx_entry *task,
486 u8 num_rq);
487void bnx2fc_process_els_compl(struct bnx2fc_cmd *els_req,
488 struct fcoe_task_ctx_entry *task,
489 u8 num_rq);
490void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd *io_req,
491 struct fcp_cmnd *fcp_cmnd);
492
493
494
495void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt);
496struct fc_seq *bnx2fc_elsct_send(struct fc_lport *lport, u32 did,
497 struct fc_frame *fp, unsigned int op,
498 void (*resp)(struct fc_seq *,
499 struct fc_frame *,
500 void *),
501 void *arg, u32 timeout);
502int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt);
503void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe);
504struct bnx2fc_rport *bnx2fc_tgt_lookup(struct fcoe_port *port,
505 u32 port_id);
506void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
507 unsigned char *buf,
508 u32 frame_len, u16 l2_oxid);
509int bnx2fc_send_stat_req(struct bnx2fc_hba *hba);
510
511#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-05 11:26:40 -0500