xref: /openbmc/linux/drivers/scsi/lpfc/lpfc.h (revision b6dcefde)
1 /*******************************************************************
2  * This file is part of the Emulex Linux Device Driver for         *
3  * Fibre Channel Host Bus Adapters.                                *
4  * Copyright (C) 2004-2009 Emulex.  All rights reserved.           *
5  * EMULEX and SLI are trademarks of Emulex.                        *
6  * www.emulex.com                                                  *
7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
8  *                                                                 *
9  * This program is free software; you can redistribute it and/or   *
10  * modify it under the terms of version 2 of the GNU General       *
11  * Public License as published by the Free Software Foundation.    *
12  * This program is distributed in the hope that it will be useful. *
13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
18  * more details, a copy of which can be found in the file COPYING  *
19  * included with this package.                                     *
20  *******************************************************************/
21 
22 #include <scsi/scsi_host.h>
23 
24 struct lpfc_sli2_slim;
25 
26 #define LPFC_PCI_DEV_LP		0x1
27 #define LPFC_PCI_DEV_OC		0x2
28 
29 #define LPFC_SLI_REV2		2
30 #define LPFC_SLI_REV3		3
31 #define LPFC_SLI_REV4		4
32 
33 #define LPFC_MAX_TARGET		4096	/* max number of targets supported */
34 #define LPFC_MAX_DISC_THREADS	64	/* max outstanding discovery els
35 					   requests */
36 #define LPFC_MAX_NS_RETRY	3	/* Number of retry attempts to contact
37 					   the NameServer  before giving up. */
38 #define LPFC_CMD_PER_LUN	3	/* max outstanding cmds per lun */
39 #define LPFC_DEFAULT_SG_SEG_CNT 64	/* sg element count per scsi cmnd */
40 #define LPFC_DEFAULT_PROT_SG_SEG_CNT 4096 /* sg protection elements count */
41 #define LPFC_MAX_SG_SEG_CNT	4096	/* sg element count per scsi cmnd */
42 #define LPFC_MAX_PROT_SG_SEG_CNT 4096	/* prot sg element count per scsi cmd*/
43 #define LPFC_IOCB_LIST_CNT	2250	/* list of IOCBs for fast-path usage. */
44 #define LPFC_Q_RAMP_UP_INTERVAL 120     /* lun q_depth ramp up interval */
45 #define LPFC_VNAME_LEN		100	/* vport symbolic name length */
46 #define LPFC_TGTQ_INTERVAL	40000	/* Min amount of time between tgt
47 					   queue depth change in millisecs */
48 #define LPFC_TGTQ_RAMPUP_PCENT	5	/* Target queue rampup in percentage */
49 #define LPFC_MIN_TGT_QDEPTH	100
50 #define LPFC_MAX_TGT_QDEPTH	0xFFFF
51 
52 #define  LPFC_MAX_BUCKET_COUNT 20	/* Maximum no. of buckets for stat data
53 					   collection. */
54 /*
55  * Following time intervals are used of adjusting SCSI device
56  * queue depths when there are driver resource error or Firmware
57  * resource error.
58  */
59 #define QUEUE_RAMP_DOWN_INTERVAL	(1 * HZ)   /* 1 Second */
60 #define QUEUE_RAMP_UP_INTERVAL		(300 * HZ) /* 5 minutes */
61 
62 /* Number of exchanges reserved for discovery to complete */
63 #define LPFC_DISC_IOCB_BUFF_COUNT 20
64 
65 #define LPFC_HB_MBOX_INTERVAL   5	/* Heart beat interval in seconds. */
66 #define LPFC_HB_MBOX_TIMEOUT    30	/* Heart beat timeout  in seconds. */
67 
68 /* Error Attention event polling interval */
69 #define LPFC_ERATT_POLL_INTERVAL	5 /* EATT poll interval in seconds */
70 
71 /* Define macros for 64 bit support */
72 #define putPaddrLow(addr)    ((uint32_t) (0xffffffff & (u64)(addr)))
73 #define putPaddrHigh(addr)   ((uint32_t) (0xffffffff & (((u64)(addr))>>32)))
74 #define getPaddr(high, low)  ((dma_addr_t)( \
75 			     (( (u64)(high)<<16 ) << 16)|( (u64)(low))))
76 /* Provide maximum configuration definitions. */
77 #define LPFC_DRVR_TIMEOUT	16	/* driver iocb timeout value in sec */
78 #define FC_MAX_ADPTMSG		64
79 
80 #define MAX_HBAEVT	32
81 
82 /* Number of MSI-X vectors the driver uses */
83 #define LPFC_MSIX_VECTORS	2
84 
85 /* lpfc wait event data ready flag */
86 #define LPFC_DATA_READY		(1<<0)
87 
88 enum lpfc_polling_flags {
89 	ENABLE_FCP_RING_POLLING = 0x1,
90 	DISABLE_FCP_RING_INT    = 0x2
91 };
92 
93 /* Provide DMA memory definitions the driver uses per port instance. */
94 struct lpfc_dmabuf {
95 	struct list_head list;
96 	void *virt;		/* virtual address ptr */
97 	dma_addr_t phys;	/* mapped address */
98 	uint32_t   buffer_tag;	/* used for tagged queue ring */
99 };
100 
101 struct lpfc_dma_pool {
102 	struct lpfc_dmabuf   *elements;
103 	uint32_t    max_count;
104 	uint32_t    current_count;
105 };
106 
107 struct hbq_dmabuf {
108 	struct lpfc_dmabuf hbuf;
109 	struct lpfc_dmabuf dbuf;
110 	uint32_t size;
111 	uint32_t tag;
112 	struct lpfc_cq_event cq_event;
113 	unsigned long time_stamp;
114 };
115 
116 /* Priority bit.  Set value to exceed low water mark in lpfc_mem. */
117 #define MEM_PRI		0x100
118 
119 
120 /****************************************************************************/
121 /*      Device VPD save area                                                */
122 /****************************************************************************/
123 typedef struct lpfc_vpd {
124 	uint32_t status;	/* vpd status value */
125 	uint32_t length;	/* number of bytes actually returned */
126 	struct {
127 		uint32_t rsvd1;	/* Revision numbers */
128 		uint32_t biuRev;
129 		uint32_t smRev;
130 		uint32_t smFwRev;
131 		uint32_t endecRev;
132 		uint16_t rBit;
133 		uint8_t fcphHigh;
134 		uint8_t fcphLow;
135 		uint8_t feaLevelHigh;
136 		uint8_t feaLevelLow;
137 		uint32_t postKernRev;
138 		uint32_t opFwRev;
139 		uint8_t opFwName[16];
140 		uint32_t sli1FwRev;
141 		uint8_t sli1FwName[16];
142 		uint32_t sli2FwRev;
143 		uint8_t sli2FwName[16];
144 	} rev;
145 	struct {
146 #ifdef __BIG_ENDIAN_BITFIELD
147 		uint32_t rsvd3  :19;  /* Reserved                             */
148 		uint32_t cdss	: 1;  /* Configure Data Security SLI          */
149 		uint32_t rsvd2	: 3;  /* Reserved                             */
150 		uint32_t cbg	: 1;  /* Configure BlockGuard                 */
151 		uint32_t cmv	: 1;  /* Configure Max VPIs                   */
152 		uint32_t ccrp   : 1;  /* Config Command Ring Polling          */
153 		uint32_t csah   : 1;  /* Configure Synchronous Abort Handling */
154 		uint32_t chbs   : 1;  /* Cofigure Host Backing store          */
155 		uint32_t cinb   : 1;  /* Enable Interrupt Notification Block  */
156 		uint32_t cerbm	: 1;  /* Configure Enhanced Receive Buf Mgmt  */
157 		uint32_t cmx	: 1;  /* Configure Max XRIs                   */
158 		uint32_t cmr	: 1;  /* Configure Max RPIs                   */
159 #else	/*  __LITTLE_ENDIAN */
160 		uint32_t cmr	: 1;  /* Configure Max RPIs                   */
161 		uint32_t cmx	: 1;  /* Configure Max XRIs                   */
162 		uint32_t cerbm	: 1;  /* Configure Enhanced Receive Buf Mgmt  */
163 		uint32_t cinb   : 1;  /* Enable Interrupt Notification Block  */
164 		uint32_t chbs   : 1;  /* Cofigure Host Backing store          */
165 		uint32_t csah   : 1;  /* Configure Synchronous Abort Handling */
166 		uint32_t ccrp   : 1;  /* Config Command Ring Polling          */
167 		uint32_t cmv	: 1;  /* Configure Max VPIs                   */
168 		uint32_t cbg	: 1;  /* Configure BlockGuard                 */
169 		uint32_t rsvd2	: 3;  /* Reserved                             */
170 		uint32_t cdss	: 1;  /* Configure Data Security SLI          */
171 		uint32_t rsvd3  :19;  /* Reserved                             */
172 #endif
173 	} sli3Feat;
174 } lpfc_vpd_t;
175 
176 struct lpfc_scsi_buf;
177 
178 
179 /*
180  * lpfc stat counters
181  */
182 struct lpfc_stats {
183 	/* Statistics for ELS commands */
184 	uint32_t elsLogiCol;
185 	uint32_t elsRetryExceeded;
186 	uint32_t elsXmitRetry;
187 	uint32_t elsDelayRetry;
188 	uint32_t elsRcvDrop;
189 	uint32_t elsRcvFrame;
190 	uint32_t elsRcvRSCN;
191 	uint32_t elsRcvRNID;
192 	uint32_t elsRcvFARP;
193 	uint32_t elsRcvFARPR;
194 	uint32_t elsRcvFLOGI;
195 	uint32_t elsRcvPLOGI;
196 	uint32_t elsRcvADISC;
197 	uint32_t elsRcvPDISC;
198 	uint32_t elsRcvFAN;
199 	uint32_t elsRcvLOGO;
200 	uint32_t elsRcvPRLO;
201 	uint32_t elsRcvPRLI;
202 	uint32_t elsRcvLIRR;
203 	uint32_t elsRcvRPS;
204 	uint32_t elsRcvRPL;
205 	uint32_t elsRcvRRQ;
206 	uint32_t elsXmitFLOGI;
207 	uint32_t elsXmitFDISC;
208 	uint32_t elsXmitPLOGI;
209 	uint32_t elsXmitPRLI;
210 	uint32_t elsXmitADISC;
211 	uint32_t elsXmitLOGO;
212 	uint32_t elsXmitSCR;
213 	uint32_t elsXmitRNID;
214 	uint32_t elsXmitFARP;
215 	uint32_t elsXmitFARPR;
216 	uint32_t elsXmitACC;
217 	uint32_t elsXmitLSRJT;
218 
219 	uint32_t frameRcvBcast;
220 	uint32_t frameRcvMulti;
221 	uint32_t strayXmitCmpl;
222 	uint32_t frameXmitDelay;
223 	uint32_t xriCmdCmpl;
224 	uint32_t xriStatErr;
225 	uint32_t LinkUp;
226 	uint32_t LinkDown;
227 	uint32_t LinkMultiEvent;
228 	uint32_t NoRcvBuf;
229 	uint32_t fcpCmd;
230 	uint32_t fcpCmpl;
231 	uint32_t fcpRspErr;
232 	uint32_t fcpRemoteStop;
233 	uint32_t fcpPortRjt;
234 	uint32_t fcpPortBusy;
235 	uint32_t fcpError;
236 	uint32_t fcpLocalErr;
237 };
238 
239 enum sysfs_mbox_state {
240 	SMBOX_IDLE,
241 	SMBOX_WRITING,
242 	SMBOX_READING
243 };
244 
245 struct lpfc_sysfs_mbox {
246 	enum sysfs_mbox_state state;
247 	size_t                offset;
248 	struct lpfcMboxq *    mbox;
249 };
250 
251 struct lpfc_hba;
252 
253 
254 enum discovery_state {
255 	LPFC_VPORT_UNKNOWN     =  0,    /* vport state is unknown */
256 	LPFC_VPORT_FAILED      =  1,    /* vport has failed */
257 	LPFC_LOCAL_CFG_LINK    =  6,    /* local NPORT Id configured */
258 	LPFC_FLOGI             =  7,    /* FLOGI sent to Fabric */
259 	LPFC_FDISC             =  8,    /* FDISC sent for vport */
260 	LPFC_FABRIC_CFG_LINK   =  9,    /* Fabric assigned NPORT Id
261 				         * configured */
262 	LPFC_NS_REG            =  10,   /* Register with NameServer */
263 	LPFC_NS_QRY            =  11,   /* Query NameServer for NPort ID list */
264 	LPFC_BUILD_DISC_LIST   =  12,   /* Build ADISC and PLOGI lists for
265 				         * device authentication / discovery */
266 	LPFC_DISC_AUTH         =  13,   /* Processing ADISC list */
267 	LPFC_VPORT_READY       =  32,
268 };
269 
270 enum hba_state {
271 	LPFC_LINK_UNKNOWN    =   0,   /* HBA state is unknown */
272 	LPFC_WARM_START      =   1,   /* HBA state after selective reset */
273 	LPFC_INIT_START      =   2,   /* Initial state after board reset */
274 	LPFC_INIT_MBX_CMDS   =   3,   /* Initialize HBA with mbox commands */
275 	LPFC_LINK_DOWN       =   4,   /* HBA initialized, link is down */
276 	LPFC_LINK_UP         =   5,   /* Link is up  - issue READ_LA */
277 	LPFC_CLEAR_LA        =   6,   /* authentication cmplt - issue
278 				       * CLEAR_LA */
279 	LPFC_HBA_READY       =  32,
280 	LPFC_HBA_ERROR       =  -1
281 };
282 
283 struct lpfc_vport {
284 	struct lpfc_hba *phba;
285 	struct list_head listentry;
286 	uint8_t port_type;
287 #define LPFC_PHYSICAL_PORT 1
288 #define LPFC_NPIV_PORT  2
289 #define LPFC_FABRIC_PORT 3
290 	enum discovery_state port_state;
291 
292 	uint16_t vpi;
293 	uint16_t vfi;
294 	uint8_t vpi_state;
295 #define LPFC_VPI_REGISTERED	0x1
296 
297 	uint32_t fc_flag;	/* FC flags */
298 /* Several of these flags are HBA centric and should be moved to
299  * phba->link_flag (e.g. FC_PTP, FC_PUBLIC_LOOP)
300  */
301 #define FC_PT2PT                0x1	 /* pt2pt with no fabric */
302 #define FC_PT2PT_PLOGI          0x2	 /* pt2pt initiate PLOGI */
303 #define FC_DISC_TMO             0x4	 /* Discovery timer running */
304 #define FC_PUBLIC_LOOP          0x8	 /* Public loop */
305 #define FC_LBIT                 0x10	 /* LOGIN bit in loopinit set */
306 #define FC_RSCN_MODE            0x20	 /* RSCN cmd rcv'ed */
307 #define FC_NLP_MORE             0x40	 /* More node to process in node tbl */
308 #define FC_OFFLINE_MODE         0x80	 /* Interface is offline for diag */
309 #define FC_FABRIC               0x100	 /* We are fabric attached */
310 #define FC_RSCN_DISCOVERY       0x400	 /* Auth all devices after RSCN */
311 #define FC_SCSI_SCAN_TMO        0x4000	 /* scsi scan timer running */
312 #define FC_ABORT_DISCOVERY      0x8000	 /* we want to abort discovery */
313 #define FC_NDISC_ACTIVE         0x10000	 /* NPort discovery active */
314 #define FC_BYPASSED_MODE        0x20000	 /* NPort is in bypassed mode */
315 #define FC_VPORT_NEEDS_REG_VPI	0x80000  /* Needs to have its vpi registered */
316 #define FC_RSCN_DEFERRED	0x100000 /* A deferred RSCN being processed */
317 #define FC_VPORT_NEEDS_INIT_VPI 0x200000 /* Need to INIT_VPI before FDISC */
318 
319 	uint32_t ct_flags;
320 #define FC_CT_RFF_ID		0x1	 /* RFF_ID accepted by switch */
321 #define FC_CT_RNN_ID		0x2	 /* RNN_ID accepted by switch */
322 #define FC_CT_RSNN_NN		0x4	 /* RSNN_NN accepted by switch */
323 #define FC_CT_RSPN_ID		0x8	 /* RSPN_ID accepted by switch */
324 #define FC_CT_RFT_ID		0x10	 /* RFT_ID accepted by switch */
325 
326 	struct list_head fc_nodes;
327 
328 	/* Keep counters for the number of entries in each list. */
329 	uint16_t fc_plogi_cnt;
330 	uint16_t fc_adisc_cnt;
331 	uint16_t fc_reglogin_cnt;
332 	uint16_t fc_prli_cnt;
333 	uint16_t fc_unmap_cnt;
334 	uint16_t fc_map_cnt;
335 	uint16_t fc_npr_cnt;
336 	uint16_t fc_unused_cnt;
337 	struct serv_parm fc_sparam;	/* buffer for our service parameters */
338 
339 	uint32_t fc_myDID;	/* fibre channel S_ID */
340 	uint32_t fc_prevDID;	/* previous fibre channel S_ID */
341 
342 	int32_t stopped;   /* HBA has not been restarted since last ERATT */
343 	uint8_t fc_linkspeed;	/* Link speed after last READ_LA */
344 
345 	uint32_t num_disc_nodes;	/*in addition to hba_state */
346 
347 	uint32_t fc_nlp_cnt;	/* outstanding NODELIST requests */
348 	uint32_t fc_rscn_id_cnt;	/* count of RSCNs payloads in list */
349 	uint32_t fc_rscn_flush;		/* flag use of fc_rscn_id_list */
350 	struct lpfc_dmabuf *fc_rscn_id_list[FC_MAX_HOLD_RSCN];
351 	struct lpfc_name fc_nodename;	/* fc nodename */
352 	struct lpfc_name fc_portname;	/* fc portname */
353 
354 	struct lpfc_work_evt disc_timeout_evt;
355 
356 	struct timer_list fc_disctmo;	/* Discovery rescue timer */
357 	uint8_t fc_ns_retry;	/* retries for fabric nameserver */
358 	uint32_t fc_prli_sent;	/* cntr for outstanding PRLIs */
359 
360 	spinlock_t work_port_lock;
361 	uint32_t work_port_events; /* Timeout to be handled  */
362 #define WORKER_DISC_TMO                0x1	/* vport: Discovery timeout */
363 #define WORKER_ELS_TMO                 0x2	/* vport: ELS timeout */
364 #define WORKER_FDMI_TMO                0x4	/* vport: FDMI timeout */
365 
366 #define WORKER_MBOX_TMO                0x100	/* hba: MBOX timeout */
367 #define WORKER_HB_TMO                  0x200	/* hba: Heart beat timeout */
368 #define WORKER_FABRIC_BLOCK_TMO        0x400	/* hba: fabric block timeout */
369 #define WORKER_RAMP_DOWN_QUEUE         0x800	/* hba: Decrease Q depth */
370 #define WORKER_RAMP_UP_QUEUE           0x1000	/* hba: Increase Q depth */
371 
372 	struct timer_list fc_fdmitmo;
373 	struct timer_list els_tmofunc;
374 
375 	int unreg_vpi_cmpl;
376 
377 	uint8_t load_flag;
378 #define FC_LOADING		0x1	/* HBA in process of loading drvr */
379 #define FC_UNLOADING		0x2	/* HBA in process of unloading drvr */
380 	/* Vport Config Parameters */
381 	uint32_t cfg_scan_down;
382 	uint32_t cfg_lun_queue_depth;
383 	uint32_t cfg_nodev_tmo;
384 	uint32_t cfg_devloss_tmo;
385 	uint32_t cfg_restrict_login;
386 	uint32_t cfg_peer_port_login;
387 	uint32_t cfg_fcp_class;
388 	uint32_t cfg_use_adisc;
389 	uint32_t cfg_fdmi_on;
390 	uint32_t cfg_discovery_threads;
391 	uint32_t cfg_log_verbose;
392 	uint32_t cfg_max_luns;
393 	uint32_t cfg_enable_da_id;
394 	uint32_t cfg_max_scsicmpl_time;
395 
396 	uint32_t dev_loss_tmo_changed;
397 
398 	struct fc_vport *fc_vport;
399 
400 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
401 	struct dentry *debug_disc_trc;
402 	struct dentry *debug_nodelist;
403 	struct dentry *vport_debugfs_root;
404 	struct lpfc_debugfs_trc *disc_trc;
405 	atomic_t disc_trc_cnt;
406 #endif
407 	uint8_t stat_data_enabled;
408 	uint8_t stat_data_blocked;
409 	struct list_head rcv_buffer_list;
410 	unsigned long rcv_buffer_time_stamp;
411 	uint32_t vport_flag;
412 #define STATIC_VPORT	1
413 };
414 
415 struct hbq_s {
416 	uint16_t entry_count;	  /* Current number of HBQ slots */
417 	uint16_t buffer_count;	  /* Current number of buffers posted */
418 	uint32_t next_hbqPutIdx;  /* Index to next HBQ slot to use */
419 	uint32_t hbqPutIdx;	  /* HBQ slot to use */
420 	uint32_t local_hbqGetIdx; /* Local copy of Get index from Port */
421 	void    *hbq_virt;	  /* Virtual ptr to this hbq */
422 	struct list_head hbq_buffer_list;  /* buffers assigned to this HBQ */
423 				  /* Callback for HBQ buffer allocation */
424 	struct hbq_dmabuf *(*hbq_alloc_buffer) (struct lpfc_hba *);
425 				  /* Callback for HBQ buffer free */
426 	void               (*hbq_free_buffer) (struct lpfc_hba *,
427 					       struct hbq_dmabuf *);
428 };
429 
430 #define LPFC_MAX_HBQS  4
431 /* this matches the position in the lpfc_hbq_defs array */
432 #define LPFC_ELS_HBQ	0
433 #define LPFC_EXTRA_HBQ	1
434 
435 enum hba_temp_state {
436 	HBA_NORMAL_TEMP,
437 	HBA_OVER_TEMP
438 };
439 
440 enum intr_type_t {
441 	NONE = 0,
442 	INTx,
443 	MSI,
444 	MSIX,
445 };
446 
447 struct unsol_rcv_ct_ctx {
448 	uint32_t ctxt_id;
449 	uint32_t SID;
450 	uint32_t oxid;
451 };
452 
453 struct lpfc_hba {
454 	/* SCSI interface function jump table entries */
455 	int (*lpfc_new_scsi_buf)
456 		(struct lpfc_vport *, int);
457 	struct lpfc_scsi_buf * (*lpfc_get_scsi_buf)
458 		(struct lpfc_hba *);
459 	int (*lpfc_scsi_prep_dma_buf)
460 		(struct lpfc_hba *, struct lpfc_scsi_buf *);
461 	void (*lpfc_scsi_unprep_dma_buf)
462 		(struct lpfc_hba *, struct lpfc_scsi_buf *);
463 	void (*lpfc_release_scsi_buf)
464 		(struct lpfc_hba *, struct lpfc_scsi_buf *);
465 	void (*lpfc_rampdown_queue_depth)
466 		(struct lpfc_hba *);
467 	void (*lpfc_scsi_prep_cmnd)
468 		(struct lpfc_vport *, struct lpfc_scsi_buf *,
469 		 struct lpfc_nodelist *);
470 	/* IOCB interface function jump table entries */
471 	int (*__lpfc_sli_issue_iocb)
472 		(struct lpfc_hba *, uint32_t,
473 		 struct lpfc_iocbq *, uint32_t);
474 	void (*__lpfc_sli_release_iocbq)(struct lpfc_hba *,
475 			 struct lpfc_iocbq *);
476 	int (*lpfc_hba_down_post)(struct lpfc_hba *phba);
477 
478 
479 	IOCB_t * (*lpfc_get_iocb_from_iocbq)
480 		(struct lpfc_iocbq *);
481 	void (*lpfc_scsi_cmd_iocb_cmpl)
482 		(struct lpfc_hba *, struct lpfc_iocbq *, struct lpfc_iocbq *);
483 
484 	/* MBOX interface function jump table entries */
485 	int (*lpfc_sli_issue_mbox)
486 		(struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t);
487 	/* Slow-path IOCB process function jump table entries */
488 	void (*lpfc_sli_handle_slow_ring_event)
489 		(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
490 		 uint32_t mask);
491 	/* INIT device interface function jump table entries */
492 	int (*lpfc_sli_hbq_to_firmware)
493 		(struct lpfc_hba *, uint32_t, struct hbq_dmabuf *);
494 	int (*lpfc_sli_brdrestart)
495 		(struct lpfc_hba *);
496 	int (*lpfc_sli_brdready)
497 		(struct lpfc_hba *, uint32_t);
498 	void (*lpfc_handle_eratt)
499 		(struct lpfc_hba *);
500 	void (*lpfc_stop_port)
501 		(struct lpfc_hba *);
502 
503 
504 	/* SLI4 specific HBA data structure */
505 	struct lpfc_sli4_hba sli4_hba;
506 
507 	struct lpfc_sli sli;
508 	uint8_t pci_dev_grp;	/* lpfc PCI dev group: 0x0, 0x1, 0x2,... */
509 	uint32_t sli_rev;		/* SLI2, SLI3, or SLI4 */
510 	uint32_t sli3_options;		/* Mask of enabled SLI3 options */
511 #define LPFC_SLI3_HBQ_ENABLED		0x01
512 #define LPFC_SLI3_NPIV_ENABLED		0x02
513 #define LPFC_SLI3_VPORT_TEARDOWN	0x04
514 #define LPFC_SLI3_CRP_ENABLED		0x08
515 #define LPFC_SLI3_INB_ENABLED		0x10
516 #define LPFC_SLI3_BG_ENABLED		0x20
517 #define LPFC_SLI3_DSS_ENABLED		0x40
518 	uint32_t iocb_cmd_size;
519 	uint32_t iocb_rsp_size;
520 
521 	enum hba_state link_state;
522 	uint32_t link_flag;	/* link state flags */
523 #define LS_LOOPBACK_MODE      0x1	/* NPort is in Loopback mode */
524 					/* This flag is set while issuing */
525 					/* INIT_LINK mailbox command */
526 #define LS_NPIV_FAB_SUPPORTED 0x2	/* Fabric supports NPIV */
527 #define LS_IGNORE_ERATT       0x4	/* intr handler should ignore ERATT */
528 
529 	uint32_t hba_flag;	/* hba generic flags */
530 #define HBA_ERATT_HANDLED	0x1 /* This flag is set when eratt handled */
531 #define DEFER_ERATT		0x2 /* Deferred error attention in progress */
532 #define HBA_FCOE_SUPPORT	0x4 /* HBA function supports FCOE */
533 #define HBA_SP_QUEUE_EVT	0x8 /* Slow-path qevt posted to worker thread*/
534 #define HBA_POST_RECEIVE_BUFFER 0x10 /* Rcv buffers need to be posted */
535 #define FCP_XRI_ABORT_EVENT	0x20
536 #define ELS_XRI_ABORT_EVENT	0x40
537 #define ASYNC_EVENT		0x80
538 #define LINK_DISABLED		0x100 /* Link disabled by user */
539 #define FCF_DISC_INPROGRESS	0x200 /* FCF discovery in progress */
540 #define HBA_FIP_SUPPORT		0x400 /* FIP support in HBA */
541 #define HBA_AER_ENABLED		0x800 /* AER enabled with HBA */
542 	uint32_t fcp_ring_in_use; /* When polling test if intr-hndlr active*/
543 	struct lpfc_dmabuf slim2p;
544 
545 	MAILBOX_t *mbox;
546 	uint32_t *inb_ha_copy;
547 	uint32_t *inb_counter;
548 	uint32_t inb_last_counter;
549 	uint32_t ha_copy;
550 	struct _PCB *pcb;
551 	struct _IOCB *IOCBs;
552 
553 	struct lpfc_dmabuf hbqslimp;
554 
555 	uint16_t pci_cfg_value;
556 
557 	uint8_t fc_linkspeed;	/* Link speed after last READ_LA */
558 
559 	uint32_t fc_eventTag;	/* event tag for link attention */
560 	uint32_t link_events;
561 
562 	/* These fields used to be binfo */
563 	uint32_t fc_pref_DID;	/* preferred D_ID */
564 	uint8_t  fc_pref_ALPA;	/* preferred AL_PA */
565 	uint32_t fc_edtov;	/* E_D_TOV timer value */
566 	uint32_t fc_arbtov;	/* ARB_TOV timer value */
567 	uint32_t fc_ratov;	/* R_A_TOV timer value */
568 	uint32_t fc_rttov;	/* R_T_TOV timer value */
569 	uint32_t fc_altov;	/* AL_TOV timer value */
570 	uint32_t fc_crtov;	/* C_R_TOV timer value */
571 	uint32_t fc_citov;	/* C_I_TOV timer value */
572 
573 	struct serv_parm fc_fabparam;	/* fabric service parameters buffer */
574 	uint8_t alpa_map[128];	/* AL_PA map from READ_LA */
575 
576 	uint32_t lmt;
577 
578 	uint32_t fc_topology;	/* link topology, from LINK INIT */
579 
580 	struct lpfc_stats fc_stat;
581 
582 	struct lpfc_nodelist fc_fcpnodev; /* nodelist entry for no device */
583 	uint32_t nport_event_cnt;	/* timestamp for nlplist entry */
584 
585 	uint8_t  wwnn[8];
586 	uint8_t  wwpn[8];
587 	uint32_t RandomData[7];
588 
589 	/* HBA Config Parameters */
590 	uint32_t cfg_ack0;
591 	uint32_t cfg_enable_npiv;
592 	uint32_t cfg_topology;
593 	uint32_t cfg_link_speed;
594 	uint32_t cfg_cr_delay;
595 	uint32_t cfg_cr_count;
596 	uint32_t cfg_multi_ring_support;
597 	uint32_t cfg_multi_ring_rctl;
598 	uint32_t cfg_multi_ring_type;
599 	uint32_t cfg_poll;
600 	uint32_t cfg_poll_tmo;
601 	uint32_t cfg_use_msi;
602 	uint32_t cfg_fcp_imax;
603 	uint32_t cfg_fcp_wq_count;
604 	uint32_t cfg_fcp_eq_count;
605 	uint32_t cfg_sg_seg_cnt;
606 	uint32_t cfg_prot_sg_seg_cnt;
607 	uint32_t cfg_sg_dma_buf_size;
608 	uint64_t cfg_soft_wwnn;
609 	uint64_t cfg_soft_wwpn;
610 	uint32_t cfg_hba_queue_depth;
611 	uint32_t cfg_enable_hba_reset;
612 	uint32_t cfg_enable_hba_heartbeat;
613 	uint32_t cfg_enable_bg;
614 	uint32_t cfg_log_verbose;
615 	uint32_t cfg_aer_support;
616 
617 	lpfc_vpd_t vpd;		/* vital product data */
618 
619 	struct pci_dev *pcidev;
620 	struct list_head      work_list;
621 	uint32_t              work_ha;      /* Host Attention Bits for WT */
622 	uint32_t              work_ha_mask; /* HA Bits owned by WT        */
623 	uint32_t              work_hs;      /* HS stored in case of ERRAT */
624 	uint32_t              work_status[2]; /* Extra status from SLIM */
625 
626 	wait_queue_head_t    work_waitq;
627 	struct task_struct   *worker_thread;
628 	unsigned long data_flags;
629 
630 	uint32_t hbq_in_use;		/* HBQs in use flag */
631 	struct list_head rb_pend_list;  /* Received buffers to be processed */
632 	uint32_t hbq_count;	        /* Count of configured HBQs */
633 	struct hbq_s hbqs[LPFC_MAX_HBQS]; /* local copy of hbq indicies  */
634 
635 	uint32_t fcp_qidx;		/* next work queue to post work to */
636 
637 	unsigned long pci_bar0_map;     /* Physical address for PCI BAR0 */
638 	unsigned long pci_bar1_map;     /* Physical address for PCI BAR1 */
639 	unsigned long pci_bar2_map;     /* Physical address for PCI BAR2 */
640 	void __iomem *slim_memmap_p;	/* Kernel memory mapped address for
641 					   PCI BAR0 */
642 	void __iomem *ctrl_regs_memmap_p;/* Kernel memory mapped address for
643 					    PCI BAR2 */
644 
645 	void __iomem *MBslimaddr;	/* virtual address for mbox cmds */
646 	void __iomem *HAregaddr;	/* virtual address for host attn reg */
647 	void __iomem *CAregaddr;	/* virtual address for chip attn reg */
648 	void __iomem *HSregaddr;	/* virtual address for host status
649 					   reg */
650 	void __iomem *HCregaddr;	/* virtual address for host ctl reg */
651 
652 	struct lpfc_hgp __iomem *host_gp; /* Host side get/put pointers */
653 	struct lpfc_pgp   *port_gp;
654 	uint32_t __iomem  *hbq_put;     /* Address in SLIM to HBQ put ptrs */
655 	uint32_t          *hbq_get;     /* Host mem address of HBQ get ptrs */
656 
657 	int brd_no;			/* FC board number */
658 
659 	char SerialNumber[32];		/* adapter Serial Number */
660 	char OptionROMVersion[32];	/* adapter BIOS / Fcode version */
661 	char ModelDesc[256];		/* Model Description */
662 	char ModelName[80];		/* Model Name */
663 	char ProgramType[256];		/* Program Type */
664 	char Port[20];			/* Port No */
665 	uint8_t vpd_flag;               /* VPD data flag */
666 
667 #define VPD_MODEL_DESC      0x1         /* valid vpd model description */
668 #define VPD_MODEL_NAME      0x2         /* valid vpd model name */
669 #define VPD_PROGRAM_TYPE    0x4         /* valid vpd program type */
670 #define VPD_PORT            0x8         /* valid vpd port data */
671 #define VPD_MASK            0xf         /* mask for any vpd data */
672 
673 	uint8_t soft_wwn_enable;
674 
675 	struct timer_list fcp_poll_timer;
676 	struct timer_list eratt_poll;
677 
678 	/*
679 	 * stat  counters
680 	 */
681 	uint64_t fc4InputRequests;
682 	uint64_t fc4OutputRequests;
683 	uint64_t fc4ControlRequests;
684 	uint64_t bg_guard_err_cnt;
685 	uint64_t bg_apptag_err_cnt;
686 	uint64_t bg_reftag_err_cnt;
687 
688 	struct lpfc_sysfs_mbox sysfs_mbox;
689 
690 	/* fastpath list. */
691 	spinlock_t scsi_buf_list_lock;
692 	struct list_head lpfc_scsi_buf_list;
693 	uint32_t total_scsi_bufs;
694 	struct list_head lpfc_iocb_list;
695 	uint32_t total_iocbq_bufs;
696 	spinlock_t hbalock;
697 
698 	/* pci_mem_pools */
699 	struct pci_pool *lpfc_scsi_dma_buf_pool;
700 	struct pci_pool *lpfc_mbuf_pool;
701 	struct pci_pool *lpfc_hrb_pool;	/* header receive buffer pool */
702 	struct pci_pool *lpfc_drb_pool; /* data receive buffer pool */
703 	struct pci_pool *lpfc_hbq_pool;	/* SLI3 hbq buffer pool */
704 	struct lpfc_dma_pool lpfc_mbuf_safety_pool;
705 
706 	mempool_t *mbox_mem_pool;
707 	mempool_t *nlp_mem_pool;
708 
709 	struct fc_host_statistics link_stats;
710 	enum intr_type_t intr_type;
711 	uint32_t intr_mode;
712 #define LPFC_INTR_ERROR	0xFFFFFFFF
713 	struct msix_entry msix_entries[LPFC_MSIX_VECTORS];
714 
715 	struct list_head port_list;
716 	struct lpfc_vport *pport;	/* physical lpfc_vport pointer */
717 	uint16_t max_vpi;		/* Maximum virtual nports */
718 #define LPFC_MAX_VPI 0xFFFF		/* Max number of VPI supported */
719 	uint16_t max_vports;            /*
720 					 * For IOV HBAs max_vpi can change
721 					 * after a reset. max_vports is max
722 					 * number of vports present. This can
723 					 * be greater than max_vpi.
724 					 */
725 	uint16_t vpi_base;
726 	uint16_t vfi_base;
727 	unsigned long *vpi_bmask;	/* vpi allocation table */
728 
729 	/* Data structure used by fabric iocb scheduler */
730 	struct list_head fabric_iocb_list;
731 	atomic_t fabric_iocb_count;
732 	struct timer_list fabric_block_timer;
733 	unsigned long bit_flags;
734 #define	FABRIC_COMANDS_BLOCKED	0
735 	atomic_t num_rsrc_err;
736 	atomic_t num_cmd_success;
737 	unsigned long last_rsrc_error_time;
738 	unsigned long last_ramp_down_time;
739 	unsigned long last_ramp_up_time;
740 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
741 	struct dentry *hba_debugfs_root;
742 	atomic_t debugfs_vport_count;
743 	struct dentry *debug_hbqinfo;
744 	struct dentry *debug_dumpHostSlim;
745 	struct dentry *debug_dumpHBASlim;
746 	struct dentry *debug_dumpData;   /* BlockGuard BPL*/
747 	struct dentry *debug_dumpDif;    /* BlockGuard BPL*/
748 	struct dentry *debug_slow_ring_trc;
749 	struct lpfc_debugfs_trc *slow_ring_trc;
750 	atomic_t slow_ring_trc_cnt;
751 #endif
752 
753 	/* Used for deferred freeing of ELS data buffers */
754 	struct list_head elsbuf;
755 	int elsbuf_cnt;
756 	int elsbuf_prev_cnt;
757 
758 	uint8_t temp_sensor_support;
759 	/* Fields used for heart beat. */
760 	unsigned long last_completion_time;
761 	struct timer_list hb_tmofunc;
762 	uint8_t hb_outstanding;
763 	enum hba_temp_state over_temp_state;
764 	/* ndlp reference management */
765 	spinlock_t ndlp_lock;
766 	/*
767 	 * Following bit will be set for all buffer tags which are not
768 	 * associated with any HBQ.
769 	 */
770 #define QUE_BUFTAG_BIT  (1<<31)
771 	uint32_t buffer_tag_count;
772 	int wait_4_mlo_maint_flg;
773 	wait_queue_head_t wait_4_mlo_m_q;
774 	/* data structure used for latency data collection */
775 #define LPFC_NO_BUCKET	   0
776 #define LPFC_LINEAR_BUCKET 1
777 #define LPFC_POWER2_BUCKET 2
778 	uint8_t  bucket_type;
779 	uint32_t bucket_base;
780 	uint32_t bucket_step;
781 
782 /* Maximum number of events that can be outstanding at any time*/
783 #define LPFC_MAX_EVT_COUNT 512
784 	atomic_t fast_event_count;
785 	uint32_t fcoe_eventtag;
786 	uint32_t fcoe_eventtag_at_fcf_scan;
787 	struct lpfc_fcf fcf;
788 	uint8_t fc_map[3];
789 	uint8_t valid_vlan;
790 	uint16_t vlan_id;
791 	struct list_head fcf_conn_rec_list;
792 
793 	struct mutex ct_event_mutex; /* synchronize access to ct_ev_waiters */
794 	struct list_head ct_ev_waiters;
795 	struct unsol_rcv_ct_ctx ct_ctx[64];
796 	uint32_t ctx_idx;
797 };
798 
799 static inline struct Scsi_Host *
800 lpfc_shost_from_vport(struct lpfc_vport *vport)
801 {
802 	return container_of((void *) vport, struct Scsi_Host, hostdata[0]);
803 }
804 
805 static inline void
806 lpfc_set_loopback_flag(struct lpfc_hba *phba)
807 {
808 	if (phba->cfg_topology == FLAGS_LOCAL_LB)
809 		phba->link_flag |= LS_LOOPBACK_MODE;
810 	else
811 		phba->link_flag &= ~LS_LOOPBACK_MODE;
812 }
813 
814 static inline int
815 lpfc_is_link_up(struct lpfc_hba *phba)
816 {
817 	return  phba->link_state == LPFC_LINK_UP ||
818 		phba->link_state == LPFC_CLEAR_LA ||
819 		phba->link_state == LPFC_HBA_READY;
820 }
821 
822 static inline void
823 lpfc_worker_wake_up(struct lpfc_hba *phba)
824 {
825 	/* Set the lpfc data pending flag */
826 	set_bit(LPFC_DATA_READY, &phba->data_flags);
827 
828 	/* Wake up worker thread */
829 	wake_up(&phba->work_waitq);
830 	return;
831 }
832 
833 static inline void
834 lpfc_sli_read_hs(struct lpfc_hba *phba)
835 {
836 	/*
837 	 * There was a link/board error. Read the status register to retrieve
838 	 * the error event and process it.
839 	 */
840 	phba->sli.slistat.err_attn_event++;
841 
842 	/* Save status info */
843 	phba->work_hs = readl(phba->HSregaddr);
844 	phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
845 	phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
846 
847 	/* Clear chip Host Attention error bit */
848 	writel(HA_ERATT, phba->HAregaddr);
849 	readl(phba->HAregaddr); /* flush */
850 	phba->pport->stopped = 1;
851 
852 	return;
853 }
854