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Merge remote-tracking branch 's5p/for-next'
[linux-2.6/next.git] / drivers / scsi / lpfc / lpfc.h
blobc088a36d1f33c679730fa8ce0082a0fab4a45888
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2011 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 #if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_SCSI_LPFC_DEBUG_FS)
25 #define CONFIG_SCSI_LPFC_DEBUG_FS
26 #endif
27
28 struct lpfc_sli2_slim;
29
30 #define LPFC_PCI_DEV_LP 0x1
31 #define LPFC_PCI_DEV_OC 0x2
32
33 #define LPFC_SLI_REV2 2
34 #define LPFC_SLI_REV3 3
35 #define LPFC_SLI_REV4 4
36
37 #define LPFC_MAX_TARGET 4096 /* max number of targets supported */
38 #define LPFC_MAX_DISC_THREADS 64 /* max outstanding discovery els
39 requests */
40 #define LPFC_MAX_NS_RETRY 3 /* Number of retry attempts to contact
41 the NameServer before giving up. */
42 #define LPFC_CMD_PER_LUN 3 /* max outstanding cmds per lun */
43 #define LPFC_DEFAULT_SG_SEG_CNT 64 /* sg element count per scsi cmnd */
44 #define LPFC_DEFAULT_MENLO_SG_SEG_CNT 128 /* sg element count per scsi
45 cmnd for menlo needs nearly twice as for firmware
46 downloads using bsg */
47 #define LPFC_DEFAULT_PROT_SG_SEG_CNT 4096 /* sg protection elements count */
48 #define LPFC_MAX_SG_SEG_CNT 4096 /* sg element count per scsi cmnd */
49 #define LPFC_MAX_SGE_SIZE 0x80000000 /* Maximum data allowed in a SGE */
50 #define LPFC_MAX_PROT_SG_SEG_CNT 4096 /* prot sg element count per scsi cmd*/
51 #define LPFC_IOCB_LIST_CNT 2250 /* list of IOCBs for fast-path usage. */
52 #define LPFC_Q_RAMP_UP_INTERVAL 120 /* lun q_depth ramp up interval */
53 #define LPFC_VNAME_LEN 100 /* vport symbolic name length */
54 #define LPFC_TGTQ_INTERVAL 40000 /* Min amount of time between tgt
55 queue depth change in millisecs */
56 #define LPFC_TGTQ_RAMPUP_PCENT 5 /* Target queue rampup in percentage */
57 #define LPFC_MIN_TGT_QDEPTH 10
58 #define LPFC_MAX_TGT_QDEPTH 0xFFFF
59
60 #define LPFC_MAX_BUCKET_COUNT 20 /* Maximum no. of buckets for stat data
61 collection. */
62 /*
63 * Following time intervals are used of adjusting SCSI device
64 * queue depths when there are driver resource error or Firmware
65 * resource error.
66 */
67 #define QUEUE_RAMP_DOWN_INTERVAL (1 * HZ) /* 1 Second */
68 #define QUEUE_RAMP_UP_INTERVAL (300 * HZ) /* 5 minutes */
69
70 /* Number of exchanges reserved for discovery to complete */
71 #define LPFC_DISC_IOCB_BUFF_COUNT 20
72
73 #define LPFC_HB_MBOX_INTERVAL 5 /* Heart beat interval in seconds. */
74 #define LPFC_HB_MBOX_TIMEOUT 30 /* Heart beat timeout in seconds. */
75
76 /* Error Attention event polling interval */
77 #define LPFC_ERATT_POLL_INTERVAL 5 /* EATT poll interval in seconds */
78
79 /* Define macros for 64 bit support */
80 #define putPaddrLow(addr) ((uint32_t) (0xffffffff & (u64)(addr)))
81 #define putPaddrHigh(addr) ((uint32_t) (0xffffffff & (((u64)(addr))>>32)))
82 #define getPaddr(high, low) ((dma_addr_t)( \
83 (( (u64)(high)<<16 ) << 16)|( (u64)(low))))
84 /* Provide maximum configuration definitions. */
85 #define LPFC_DRVR_TIMEOUT 16 /* driver iocb timeout value in sec */
86 #define FC_MAX_ADPTMSG 64
87
88 #define MAX_HBAEVT 32
89
90 /* Number of MSI-X vectors the driver uses */
91 #define LPFC_MSIX_VECTORS 2
92
93 /* lpfc wait event data ready flag */
94 #define LPFC_DATA_READY (1<<0)
95
96 enum lpfc_polling_flags {
97 ENABLE_FCP_RING_POLLING = 0x1,
98 DISABLE_FCP_RING_INT = 0x2
99 };
100
101 /* Provide DMA memory definitions the driver uses per port instance. */
102 struct lpfc_dmabuf {
103 struct list_head list;
104 void *virt; /* virtual address ptr */
105 dma_addr_t phys; /* mapped address */
106 uint32_t buffer_tag; /* used for tagged queue ring */
107 };
108
109 struct lpfc_dma_pool {
110 struct lpfc_dmabuf *elements;
111 uint32_t max_count;
112 uint32_t current_count;
113 };
114
115 struct hbq_dmabuf {
116 struct lpfc_dmabuf hbuf;
117 struct lpfc_dmabuf dbuf;
118 uint32_t size;
119 uint32_t tag;
120 struct lpfc_cq_event cq_event;
121 unsigned long time_stamp;
122 };
123
124 /* Priority bit. Set value to exceed low water mark in lpfc_mem. */
125 #define MEM_PRI 0x100
126
127
128 /****************************************************************************/
129 /* Device VPD save area */
130 /****************************************************************************/
131 typedef struct lpfc_vpd {
132 uint32_t status; /* vpd status value */
133 uint32_t length; /* number of bytes actually returned */
134 struct {
135 uint32_t rsvd1; /* Revision numbers */
136 uint32_t biuRev;
137 uint32_t smRev;
138 uint32_t smFwRev;
139 uint32_t endecRev;
140 uint16_t rBit;
141 uint8_t fcphHigh;
142 uint8_t fcphLow;
143 uint8_t feaLevelHigh;
144 uint8_t feaLevelLow;
145 uint32_t postKernRev;
146 uint32_t opFwRev;
147 uint8_t opFwName[16];
148 uint32_t sli1FwRev;
149 uint8_t sli1FwName[16];
150 uint32_t sli2FwRev;
151 uint8_t sli2FwName[16];
152 } rev;
153 struct {
154 #ifdef __BIG_ENDIAN_BITFIELD
155 uint32_t rsvd3 :19; /* Reserved */
156 uint32_t cdss : 1; /* Configure Data Security SLI */
157 uint32_t rsvd2 : 3; /* Reserved */
158 uint32_t cbg : 1; /* Configure BlockGuard */
159 uint32_t cmv : 1; /* Configure Max VPIs */
160 uint32_t ccrp : 1; /* Config Command Ring Polling */
161 uint32_t csah : 1; /* Configure Synchronous Abort Handling */
162 uint32_t chbs : 1; /* Cofigure Host Backing store */
163 uint32_t cinb : 1; /* Enable Interrupt Notification Block */
164 uint32_t cerbm : 1; /* Configure Enhanced Receive Buf Mgmt */
165 uint32_t cmx : 1; /* Configure Max XRIs */
166 uint32_t cmr : 1; /* Configure Max RPIs */
167 #else /* __LITTLE_ENDIAN */
168 uint32_t cmr : 1; /* Configure Max RPIs */
169 uint32_t cmx : 1; /* Configure Max XRIs */
170 uint32_t cerbm : 1; /* Configure Enhanced Receive Buf Mgmt */
171 uint32_t cinb : 1; /* Enable Interrupt Notification Block */
172 uint32_t chbs : 1; /* Cofigure Host Backing store */
173 uint32_t csah : 1; /* Configure Synchronous Abort Handling */
174 uint32_t ccrp : 1; /* Config Command Ring Polling */
175 uint32_t cmv : 1; /* Configure Max VPIs */
176 uint32_t cbg : 1; /* Configure BlockGuard */
177 uint32_t rsvd2 : 3; /* Reserved */
178 uint32_t cdss : 1; /* Configure Data Security SLI */
179 uint32_t rsvd3 :19; /* Reserved */
180 #endif
181 } sli3Feat;
182 } lpfc_vpd_t;
183
184 struct lpfc_scsi_buf;
185
186
187 /*
188 * lpfc stat counters
189 */
190 struct lpfc_stats {
191 /* Statistics for ELS commands */
192 uint32_t elsLogiCol;
193 uint32_t elsRetryExceeded;
194 uint32_t elsXmitRetry;
195 uint32_t elsDelayRetry;
196 uint32_t elsRcvDrop;
197 uint32_t elsRcvFrame;
198 uint32_t elsRcvRSCN;
199 uint32_t elsRcvRNID;
200 uint32_t elsRcvFARP;
201 uint32_t elsRcvFARPR;
202 uint32_t elsRcvFLOGI;
203 uint32_t elsRcvPLOGI;
204 uint32_t elsRcvADISC;
205 uint32_t elsRcvPDISC;
206 uint32_t elsRcvFAN;
207 uint32_t elsRcvLOGO;
208 uint32_t elsRcvPRLO;
209 uint32_t elsRcvPRLI;
210 uint32_t elsRcvLIRR;
211 uint32_t elsRcvRLS;
212 uint32_t elsRcvRPS;
213 uint32_t elsRcvRPL;
214 uint32_t elsRcvRRQ;
215 uint32_t elsRcvRTV;
216 uint32_t elsRcvECHO;
217 uint32_t elsXmitFLOGI;
218 uint32_t elsXmitFDISC;
219 uint32_t elsXmitPLOGI;
220 uint32_t elsXmitPRLI;
221 uint32_t elsXmitADISC;
222 uint32_t elsXmitLOGO;
223 uint32_t elsXmitSCR;
224 uint32_t elsXmitRNID;
225 uint32_t elsXmitFARP;
226 uint32_t elsXmitFARPR;
227 uint32_t elsXmitACC;
228 uint32_t elsXmitLSRJT;
229
230 uint32_t frameRcvBcast;
231 uint32_t frameRcvMulti;
232 uint32_t strayXmitCmpl;
233 uint32_t frameXmitDelay;
234 uint32_t xriCmdCmpl;
235 uint32_t xriStatErr;
236 uint32_t LinkUp;
237 uint32_t LinkDown;
238 uint32_t LinkMultiEvent;
239 uint32_t NoRcvBuf;
240 uint32_t fcpCmd;
241 uint32_t fcpCmpl;
242 uint32_t fcpRspErr;
243 uint32_t fcpRemoteStop;
244 uint32_t fcpPortRjt;
245 uint32_t fcpPortBusy;
246 uint32_t fcpError;
247 uint32_t fcpLocalErr;
248 };
249
250 enum sysfs_mbox_state {
251 SMBOX_IDLE,
252 SMBOX_WRITING,
253 SMBOX_READING
254 };
255
256 struct lpfc_sysfs_mbox {
257 enum sysfs_mbox_state state;
258 size_t offset;
259 struct lpfcMboxq * mbox;
260 };
261
262 struct lpfc_hba;
263
264
265 enum discovery_state {
266 LPFC_VPORT_UNKNOWN = 0, /* vport state is unknown */
267 LPFC_VPORT_FAILED = 1, /* vport has failed */
268 LPFC_LOCAL_CFG_LINK = 6, /* local NPORT Id configured */
269 LPFC_FLOGI = 7, /* FLOGI sent to Fabric */
270 LPFC_FDISC = 8, /* FDISC sent for vport */
271 LPFC_FABRIC_CFG_LINK = 9, /* Fabric assigned NPORT Id
272 * configured */
273 LPFC_NS_REG = 10, /* Register with NameServer */
274 LPFC_NS_QRY = 11, /* Query NameServer for NPort ID list */
275 LPFC_BUILD_DISC_LIST = 12, /* Build ADISC and PLOGI lists for
276 * device authentication / discovery */
277 LPFC_DISC_AUTH = 13, /* Processing ADISC list */
278 LPFC_VPORT_READY = 32,
279 };
280
281 enum hba_state {
282 LPFC_LINK_UNKNOWN = 0, /* HBA state is unknown */
283 LPFC_WARM_START = 1, /* HBA state after selective reset */
284 LPFC_INIT_START = 2, /* Initial state after board reset */
285 LPFC_INIT_MBX_CMDS = 3, /* Initialize HBA with mbox commands */
286 LPFC_LINK_DOWN = 4, /* HBA initialized, link is down */
287 LPFC_LINK_UP = 5, /* Link is up - issue READ_LA */
288 LPFC_CLEAR_LA = 6, /* authentication cmplt - issue
289 * CLEAR_LA */
290 LPFC_HBA_READY = 32,
291 LPFC_HBA_ERROR = -1
292 };
293
294 struct lpfc_vport {
295 struct lpfc_hba *phba;
296 struct list_head listentry;
297 uint8_t port_type;
298 #define LPFC_PHYSICAL_PORT 1
299 #define LPFC_NPIV_PORT 2
300 #define LPFC_FABRIC_PORT 3
301 enum discovery_state port_state;
302
303 uint16_t vpi;
304 uint16_t vfi;
305 uint8_t vpi_state;
306 #define LPFC_VPI_REGISTERED 0x1
307
308 uint32_t fc_flag; /* FC flags */
309 /* Several of these flags are HBA centric and should be moved to
310 * phba->link_flag (e.g. FC_PTP, FC_PUBLIC_LOOP)
311 */
312 #define FC_PT2PT 0x1 /* pt2pt with no fabric */
313 #define FC_PT2PT_PLOGI 0x2 /* pt2pt initiate PLOGI */
314 #define FC_DISC_TMO 0x4 /* Discovery timer running */
315 #define FC_PUBLIC_LOOP 0x8 /* Public loop */
316 #define FC_LBIT 0x10 /* LOGIN bit in loopinit set */
317 #define FC_RSCN_MODE 0x20 /* RSCN cmd rcv'ed */
318 #define FC_NLP_MORE 0x40 /* More node to process in node tbl */
319 #define FC_OFFLINE_MODE 0x80 /* Interface is offline for diag */
320 #define FC_FABRIC 0x100 /* We are fabric attached */
321 #define FC_VPORT_LOGO_RCVD 0x200 /* LOGO received on vport */
322 #define FC_RSCN_DISCOVERY 0x400 /* Auth all devices after RSCN */
323 #define FC_LOGO_RCVD_DID_CHNG 0x800 /* FDISC on phys port detect DID chng*/
324 #define FC_SCSI_SCAN_TMO 0x4000 /* scsi scan timer running */
325 #define FC_ABORT_DISCOVERY 0x8000 /* we want to abort discovery */
326 #define FC_NDISC_ACTIVE 0x10000 /* NPort discovery active */
327 #define FC_BYPASSED_MODE 0x20000 /* NPort is in bypassed mode */
328 #define FC_VPORT_NEEDS_REG_VPI 0x80000 /* Needs to have its vpi registered */
329 #define FC_RSCN_DEFERRED 0x100000 /* A deferred RSCN being processed */
330 #define FC_VPORT_NEEDS_INIT_VPI 0x200000 /* Need to INIT_VPI before FDISC */
331 #define FC_VPORT_CVL_RCVD 0x400000 /* VLink failed due to CVL */
332 #define FC_VFI_REGISTERED 0x800000 /* VFI is registered */
333 #define FC_FDISC_COMPLETED 0x1000000/* FDISC completed */
334 #define FC_DISC_DELAYED 0x2000000/* Delay NPort discovery */
335
336 uint32_t ct_flags;
337 #define FC_CT_RFF_ID 0x1 /* RFF_ID accepted by switch */
338 #define FC_CT_RNN_ID 0x2 /* RNN_ID accepted by switch */
339 #define FC_CT_RSNN_NN 0x4 /* RSNN_NN accepted by switch */
340 #define FC_CT_RSPN_ID 0x8 /* RSPN_ID accepted by switch */
341 #define FC_CT_RFT_ID 0x10 /* RFT_ID accepted by switch */
342
343 struct list_head fc_nodes;
344
345 /* Keep counters for the number of entries in each list. */
346 uint16_t fc_plogi_cnt;
347 uint16_t fc_adisc_cnt;
348 uint16_t fc_reglogin_cnt;
349 uint16_t fc_prli_cnt;
350 uint16_t fc_unmap_cnt;
351 uint16_t fc_map_cnt;
352 uint16_t fc_npr_cnt;
353 uint16_t fc_unused_cnt;
354 struct serv_parm fc_sparam; /* buffer for our service parameters */
355
356 uint32_t fc_myDID; /* fibre channel S_ID */
357 uint32_t fc_prevDID; /* previous fibre channel S_ID */
358 struct lpfc_name fabric_portname;
359 struct lpfc_name fabric_nodename;
360
361 int32_t stopped; /* HBA has not been restarted since last ERATT */
362 uint8_t fc_linkspeed; /* Link speed after last READ_LA */
363
364 uint32_t num_disc_nodes; /*in addition to hba_state */
365
366 uint32_t fc_nlp_cnt; /* outstanding NODELIST requests */
367 uint32_t fc_rscn_id_cnt; /* count of RSCNs payloads in list */
368 uint32_t fc_rscn_flush; /* flag use of fc_rscn_id_list */
369 struct lpfc_dmabuf *fc_rscn_id_list[FC_MAX_HOLD_RSCN];
370 struct lpfc_name fc_nodename; /* fc nodename */
371 struct lpfc_name fc_portname; /* fc portname */
372
373 struct lpfc_work_evt disc_timeout_evt;
374
375 struct timer_list fc_disctmo; /* Discovery rescue timer */
376 uint8_t fc_ns_retry; /* retries for fabric nameserver */
377 uint32_t fc_prli_sent; /* cntr for outstanding PRLIs */
378
379 spinlock_t work_port_lock;
380 uint32_t work_port_events; /* Timeout to be handled */
381 #define WORKER_DISC_TMO 0x1 /* vport: Discovery timeout */
382 #define WORKER_ELS_TMO 0x2 /* vport: ELS timeout */
383 #define WORKER_FDMI_TMO 0x4 /* vport: FDMI timeout */
384 #define WORKER_DELAYED_DISC_TMO 0x8 /* vport: delayed discovery */
385
386 #define WORKER_MBOX_TMO 0x100 /* hba: MBOX timeout */
387 #define WORKER_HB_TMO 0x200 /* hba: Heart beat timeout */
388 #define WORKER_FABRIC_BLOCK_TMO 0x400 /* hba: fabric block timeout */
389 #define WORKER_RAMP_DOWN_QUEUE 0x800 /* hba: Decrease Q depth */
390 #define WORKER_RAMP_UP_QUEUE 0x1000 /* hba: Increase Q depth */
391 #define WORKER_SERVICE_TXQ 0x2000 /* hba: IOCBs on the txq */
392
393 struct timer_list fc_fdmitmo;
394 struct timer_list els_tmofunc;
395 struct timer_list delayed_disc_tmo;
396
397 int unreg_vpi_cmpl;
398
399 uint8_t load_flag;
400 #define FC_LOADING 0x1 /* HBA in process of loading drvr */
401 #define FC_UNLOADING 0x2 /* HBA in process of unloading drvr */
402 /* Vport Config Parameters */
403 uint32_t cfg_scan_down;
404 uint32_t cfg_lun_queue_depth;
405 uint32_t cfg_nodev_tmo;
406 uint32_t cfg_devloss_tmo;
407 uint32_t cfg_restrict_login;
408 uint32_t cfg_peer_port_login;
409 uint32_t cfg_fcp_class;
410 uint32_t cfg_use_adisc;
411 uint32_t cfg_fdmi_on;
412 uint32_t cfg_discovery_threads;
413 uint32_t cfg_log_verbose;
414 uint32_t cfg_max_luns;
415 uint32_t cfg_enable_da_id;
416 uint32_t cfg_max_scsicmpl_time;
417 uint32_t cfg_tgt_queue_depth;
418
419 uint32_t dev_loss_tmo_changed;
420
421 struct fc_vport *fc_vport;
422
423 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
424 struct dentry *debug_disc_trc;
425 struct dentry *debug_nodelist;
426 struct dentry *vport_debugfs_root;
427 struct lpfc_debugfs_trc *disc_trc;
428 atomic_t disc_trc_cnt;
429 #endif
430 uint8_t stat_data_enabled;
431 uint8_t stat_data_blocked;
432 struct list_head rcv_buffer_list;
433 unsigned long rcv_buffer_time_stamp;
434 uint32_t vport_flag;
435 #define STATIC_VPORT 1
436 };
437
438 struct hbq_s {
439 uint16_t entry_count; /* Current number of HBQ slots */
440 uint16_t buffer_count; /* Current number of buffers posted */
441 uint32_t next_hbqPutIdx; /* Index to next HBQ slot to use */
442 uint32_t hbqPutIdx; /* HBQ slot to use */
443 uint32_t local_hbqGetIdx; /* Local copy of Get index from Port */
444 void *hbq_virt; /* Virtual ptr to this hbq */
445 struct list_head hbq_buffer_list; /* buffers assigned to this HBQ */
446 /* Callback for HBQ buffer allocation */
447 struct hbq_dmabuf *(*hbq_alloc_buffer) (struct lpfc_hba *);
448 /* Callback for HBQ buffer free */
449 void (*hbq_free_buffer) (struct lpfc_hba *,
450 struct hbq_dmabuf *);
451 };
452
453 #define LPFC_MAX_HBQS 4
454 /* this matches the position in the lpfc_hbq_defs array */
455 #define LPFC_ELS_HBQ 0
456 #define LPFC_EXTRA_HBQ 1
457
458 enum hba_temp_state {
459 HBA_NORMAL_TEMP,
460 HBA_OVER_TEMP
461 };
462
463 enum intr_type_t {
464 NONE = 0,
465 INTx,
466 MSI,
467 MSIX,
468 };
469
470 struct unsol_rcv_ct_ctx {
471 uint32_t ctxt_id;
472 uint32_t SID;
473 uint32_t flags;
474 #define UNSOL_VALID 0x00000001
475 uint16_t oxid;
476 uint16_t rxid;
477 };
478
479 #define LPFC_USER_LINK_SPEED_AUTO 0 /* auto select (default)*/
480 #define LPFC_USER_LINK_SPEED_1G 1 /* 1 Gigabaud */
481 #define LPFC_USER_LINK_SPEED_2G 2 /* 2 Gigabaud */
482 #define LPFC_USER_LINK_SPEED_4G 4 /* 4 Gigabaud */
483 #define LPFC_USER_LINK_SPEED_8G 8 /* 8 Gigabaud */
484 #define LPFC_USER_LINK_SPEED_10G 10 /* 10 Gigabaud */
485 #define LPFC_USER_LINK_SPEED_16G 16 /* 16 Gigabaud */
486 #define LPFC_USER_LINK_SPEED_MAX LPFC_USER_LINK_SPEED_16G
487 #define LPFC_USER_LINK_SPEED_BITMAP ((1 << LPFC_USER_LINK_SPEED_16G) | \
488 (1 << LPFC_USER_LINK_SPEED_10G) | \
489 (1 << LPFC_USER_LINK_SPEED_8G) | \
490 (1 << LPFC_USER_LINK_SPEED_4G) | \
491 (1 << LPFC_USER_LINK_SPEED_2G) | \
492 (1 << LPFC_USER_LINK_SPEED_1G) | \
493 (1 << LPFC_USER_LINK_SPEED_AUTO))
494 #define LPFC_LINK_SPEED_STRING "0, 1, 2, 4, 8, 10, 16"
495
496 enum nemb_type {
497 nemb_mse = 1,
498 nemb_hbd
499 };
500
501 enum mbox_type {
502 mbox_rd = 1,
503 mbox_wr
504 };
505
506 enum dma_type {
507 dma_mbox = 1,
508 dma_ebuf
509 };
510
511 enum sta_type {
512 sta_pre_addr = 1,
513 sta_pos_addr
514 };
515
516 struct lpfc_mbox_ext_buf_ctx {
517 uint32_t state;
518 #define LPFC_BSG_MBOX_IDLE 0
519 #define LPFC_BSG_MBOX_HOST 1
520 #define LPFC_BSG_MBOX_PORT 2
521 #define LPFC_BSG_MBOX_DONE 3
522 #define LPFC_BSG_MBOX_ABTS 4
523 enum nemb_type nembType;
524 enum mbox_type mboxType;
525 uint32_t numBuf;
526 uint32_t mbxTag;
527 uint32_t seqNum;
528 struct lpfc_dmabuf *mbx_dmabuf;
529 struct list_head ext_dmabuf_list;
530 };
531
532 struct lpfc_hba {
533 /* SCSI interface function jump table entries */
534 int (*lpfc_new_scsi_buf)
535 (struct lpfc_vport *, int);
536 struct lpfc_scsi_buf * (*lpfc_get_scsi_buf)
537 (struct lpfc_hba *, struct lpfc_nodelist *);
538 int (*lpfc_scsi_prep_dma_buf)
539 (struct lpfc_hba *, struct lpfc_scsi_buf *);
540 void (*lpfc_scsi_unprep_dma_buf)
541 (struct lpfc_hba *, struct lpfc_scsi_buf *);
542 void (*lpfc_release_scsi_buf)
543 (struct lpfc_hba *, struct lpfc_scsi_buf *);
544 void (*lpfc_rampdown_queue_depth)
545 (struct lpfc_hba *);
546 void (*lpfc_scsi_prep_cmnd)
547 (struct lpfc_vport *, struct lpfc_scsi_buf *,
548 struct lpfc_nodelist *);
549 /* IOCB interface function jump table entries */
550 int (*__lpfc_sli_issue_iocb)
551 (struct lpfc_hba *, uint32_t,
552 struct lpfc_iocbq *, uint32_t);
553 void (*__lpfc_sli_release_iocbq)(struct lpfc_hba *,
554 struct lpfc_iocbq *);
555 int (*lpfc_hba_down_post)(struct lpfc_hba *phba);
556
557
558 IOCB_t * (*lpfc_get_iocb_from_iocbq)
559 (struct lpfc_iocbq *);
560 void (*lpfc_scsi_cmd_iocb_cmpl)
561 (struct lpfc_hba *, struct lpfc_iocbq *, struct lpfc_iocbq *);
562
563 /* MBOX interface function jump table entries */
564 int (*lpfc_sli_issue_mbox)
565 (struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t);
566 /* Slow-path IOCB process function jump table entries */
567 void (*lpfc_sli_handle_slow_ring_event)
568 (struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
569 uint32_t mask);
570 /* INIT device interface function jump table entries */
571 int (*lpfc_sli_hbq_to_firmware)
572 (struct lpfc_hba *, uint32_t, struct hbq_dmabuf *);
573 int (*lpfc_sli_brdrestart)
574 (struct lpfc_hba *);
575 int (*lpfc_sli_brdready)
576 (struct lpfc_hba *, uint32_t);
577 void (*lpfc_handle_eratt)
578 (struct lpfc_hba *);
579 void (*lpfc_stop_port)
580 (struct lpfc_hba *);
581 int (*lpfc_hba_init_link)
582 (struct lpfc_hba *, uint32_t);
583 int (*lpfc_hba_down_link)
584 (struct lpfc_hba *, uint32_t);
585 int (*lpfc_selective_reset)
586 (struct lpfc_hba *);
587
588 /* SLI4 specific HBA data structure */
589 struct lpfc_sli4_hba sli4_hba;
590
591 struct lpfc_sli sli;
592 uint8_t pci_dev_grp; /* lpfc PCI dev group: 0x0, 0x1, 0x2,... */
593 uint32_t sli_rev; /* SLI2, SLI3, or SLI4 */
594 uint32_t sli3_options; /* Mask of enabled SLI3 options */
595 #define LPFC_SLI3_HBQ_ENABLED 0x01
596 #define LPFC_SLI3_NPIV_ENABLED 0x02
597 #define LPFC_SLI3_VPORT_TEARDOWN 0x04
598 #define LPFC_SLI3_CRP_ENABLED 0x08
599 #define LPFC_SLI3_BG_ENABLED 0x20
600 #define LPFC_SLI3_DSS_ENABLED 0x40
601 #define LPFC_SLI4_PERFH_ENABLED 0x80
602 #define LPFC_SLI4_PHWQ_ENABLED 0x100
603 uint32_t iocb_cmd_size;
604 uint32_t iocb_rsp_size;
605
606 enum hba_state link_state;
607 uint32_t link_flag; /* link state flags */
608 #define LS_LOOPBACK_MODE 0x1 /* NPort is in Loopback mode */
609 /* This flag is set while issuing */
610 /* INIT_LINK mailbox command */
611 #define LS_NPIV_FAB_SUPPORTED 0x2 /* Fabric supports NPIV */
612 #define LS_IGNORE_ERATT 0x4 /* intr handler should ignore ERATT */
613
614 uint32_t hba_flag; /* hba generic flags */
615 #define HBA_ERATT_HANDLED 0x1 /* This flag is set when eratt handled */
616 #define DEFER_ERATT 0x2 /* Deferred error attention in progress */
617 #define HBA_FCOE_MODE 0x4 /* HBA function in FCoE Mode */
618 #define HBA_SP_QUEUE_EVT 0x8 /* Slow-path qevt posted to worker thread*/
619 #define HBA_POST_RECEIVE_BUFFER 0x10 /* Rcv buffers need to be posted */
620 #define FCP_XRI_ABORT_EVENT 0x20
621 #define ELS_XRI_ABORT_EVENT 0x40
622 #define ASYNC_EVENT 0x80
623 #define LINK_DISABLED 0x100 /* Link disabled by user */
624 #define FCF_TS_INPROG 0x200 /* FCF table scan in progress */
625 #define FCF_RR_INPROG 0x400 /* FCF roundrobin flogi in progress */
626 #define HBA_FIP_SUPPORT 0x800 /* FIP support in HBA */
627 #define HBA_AER_ENABLED 0x1000 /* AER enabled with HBA */
628 #define HBA_DEVLOSS_TMO 0x2000 /* HBA in devloss timeout */
629 #define HBA_RRQ_ACTIVE 0x4000 /* process the rrq active list */
630 uint32_t fcp_ring_in_use; /* When polling test if intr-hndlr active*/
631 struct lpfc_dmabuf slim2p;
632
633 MAILBOX_t *mbox;
634 uint32_t *mbox_ext;
635 struct lpfc_mbox_ext_buf_ctx mbox_ext_buf_ctx;
636 uint32_t ha_copy;
637 struct _PCB *pcb;
638 struct _IOCB *IOCBs;
639
640 struct lpfc_dmabuf hbqslimp;
641
642 uint16_t pci_cfg_value;
643
644 uint8_t fc_linkspeed; /* Link speed after last READ_LA */
645
646 uint32_t fc_eventTag; /* event tag for link attention */
647 uint32_t link_events;
648
649 /* These fields used to be binfo */
650 uint32_t fc_pref_DID; /* preferred D_ID */
651 uint8_t fc_pref_ALPA; /* preferred AL_PA */
652 uint32_t fc_edtovResol; /* E_D_TOV timer resolution */
653 uint32_t fc_edtov; /* E_D_TOV timer value */
654 uint32_t fc_arbtov; /* ARB_TOV timer value */
655 uint32_t fc_ratov; /* R_A_TOV timer value */
656 uint32_t fc_rttov; /* R_T_TOV timer value */
657 uint32_t fc_altov; /* AL_TOV timer value */
658 uint32_t fc_crtov; /* C_R_TOV timer value */
659 uint32_t fc_citov; /* C_I_TOV timer value */
660
661 struct serv_parm fc_fabparam; /* fabric service parameters buffer */
662 uint8_t alpa_map[128]; /* AL_PA map from READ_LA */
663
664 uint32_t lmt;
665
666 uint32_t fc_topology; /* link topology, from LINK INIT */
667
668 struct lpfc_stats fc_stat;
669
670 struct lpfc_nodelist fc_fcpnodev; /* nodelist entry for no device */
671 uint32_t nport_event_cnt; /* timestamp for nlplist entry */
672
673 uint8_t wwnn[8];
674 uint8_t wwpn[8];
675 uint32_t RandomData[7];
676
677 /* HBA Config Parameters */
678 uint32_t cfg_ack0;
679 uint32_t cfg_enable_npiv;
680 uint32_t cfg_enable_rrq;
681 uint32_t cfg_topology;
682 uint32_t cfg_link_speed;
683 #define LPFC_FCF_FOV 1 /* Fast fcf failover */
684 #define LPFC_FCF_PRIORITY 2 /* Priority fcf failover */
685 uint32_t cfg_fcf_failover_policy;
686 uint32_t cfg_cr_delay;
687 uint32_t cfg_cr_count;
688 uint32_t cfg_multi_ring_support;
689 uint32_t cfg_multi_ring_rctl;
690 uint32_t cfg_multi_ring_type;
691 uint32_t cfg_poll;
692 uint32_t cfg_poll_tmo;
693 uint32_t cfg_use_msi;
694 uint32_t cfg_fcp_imax;
695 uint32_t cfg_fcp_wq_count;
696 uint32_t cfg_fcp_eq_count;
697 uint32_t cfg_sg_seg_cnt;
698 uint32_t cfg_prot_sg_seg_cnt;
699 uint32_t cfg_sg_dma_buf_size;
700 uint64_t cfg_soft_wwnn;
701 uint64_t cfg_soft_wwpn;
702 uint32_t cfg_hba_queue_depth;
703 uint32_t cfg_enable_hba_reset;
704 uint32_t cfg_enable_hba_heartbeat;
705 uint32_t cfg_enable_bg;
706 uint32_t cfg_hostmem_hgp;
707 uint32_t cfg_log_verbose;
708 uint32_t cfg_aer_support;
709 uint32_t cfg_sriov_nr_virtfn;
710 uint32_t cfg_iocb_cnt;
711 uint32_t cfg_suppress_link_up;
712 #define LPFC_INITIALIZE_LINK 0 /* do normal init_link mbox */
713 #define LPFC_DELAY_INIT_LINK 1 /* layered driver hold off */
714 #define LPFC_DELAY_INIT_LINK_INDEFINITELY 2 /* wait, manual intervention */
715 uint32_t cfg_enable_dss;
716 lpfc_vpd_t vpd; /* vital product data */
717
718 struct pci_dev *pcidev;
719 struct list_head work_list;
720 uint32_t work_ha; /* Host Attention Bits for WT */
721 uint32_t work_ha_mask; /* HA Bits owned by WT */
722 uint32_t work_hs; /* HS stored in case of ERRAT */
723 uint32_t work_status[2]; /* Extra status from SLIM */
724
725 wait_queue_head_t work_waitq;
726 struct task_struct *worker_thread;
727 unsigned long data_flags;
728
729 uint32_t hbq_in_use; /* HBQs in use flag */
730 struct list_head rb_pend_list; /* Received buffers to be processed */
731 uint32_t hbq_count; /* Count of configured HBQs */
732 struct hbq_s hbqs[LPFC_MAX_HBQS]; /* local copy of hbq indicies */
733
734 uint32_t fcp_qidx; /* next work queue to post work to */
735
736 unsigned long pci_bar0_map; /* Physical address for PCI BAR0 */
737 unsigned long pci_bar1_map; /* Physical address for PCI BAR1 */
738 unsigned long pci_bar2_map; /* Physical address for PCI BAR2 */
739 void __iomem *slim_memmap_p; /* Kernel memory mapped address for
740 PCI BAR0 */
741 void __iomem *ctrl_regs_memmap_p;/* Kernel memory mapped address for
742 PCI BAR2 */
743
744 void __iomem *MBslimaddr; /* virtual address for mbox cmds */
745 void __iomem *HAregaddr; /* virtual address for host attn reg */
746 void __iomem *CAregaddr; /* virtual address for chip attn reg */
747 void __iomem *HSregaddr; /* virtual address for host status
748 reg */
749 void __iomem *HCregaddr; /* virtual address for host ctl reg */
750
751 struct lpfc_hgp __iomem *host_gp; /* Host side get/put pointers */
752 struct lpfc_pgp *port_gp;
753 uint32_t __iomem *hbq_put; /* Address in SLIM to HBQ put ptrs */
754 uint32_t *hbq_get; /* Host mem address of HBQ get ptrs */
755
756 int brd_no; /* FC board number */
757 char SerialNumber[32]; /* adapter Serial Number */
758 char OptionROMVersion[32]; /* adapter BIOS / Fcode version */
759 char ModelDesc[256]; /* Model Description */
760 char ModelName[80]; /* Model Name */
761 char ProgramType[256]; /* Program Type */
762 char Port[20]; /* Port No */
763 uint8_t vpd_flag; /* VPD data flag */
764
765 #define VPD_MODEL_DESC 0x1 /* valid vpd model description */
766 #define VPD_MODEL_NAME 0x2 /* valid vpd model name */
767 #define VPD_PROGRAM_TYPE 0x4 /* valid vpd program type */
768 #define VPD_PORT 0x8 /* valid vpd port data */
769 #define VPD_MASK 0xf /* mask for any vpd data */
770
771 uint8_t soft_wwn_enable;
772
773 struct timer_list fcp_poll_timer;
774 struct timer_list eratt_poll;
775
776 /*
777 * stat counters
778 */
779 uint64_t fc4InputRequests;
780 uint64_t fc4OutputRequests;
781 uint64_t fc4ControlRequests;
782 uint64_t bg_guard_err_cnt;
783 uint64_t bg_apptag_err_cnt;
784 uint64_t bg_reftag_err_cnt;
785
786 struct lpfc_sysfs_mbox sysfs_mbox;
787
788 /* fastpath list. */
789 spinlock_t scsi_buf_list_lock;
790 struct list_head lpfc_scsi_buf_list;
791 uint32_t total_scsi_bufs;
792 struct list_head lpfc_iocb_list;
793 uint32_t total_iocbq_bufs;
794 struct list_head active_rrq_list;
795 spinlock_t hbalock;
796
797 /* pci_mem_pools */
798 struct pci_pool *lpfc_scsi_dma_buf_pool;
799 struct pci_pool *lpfc_mbuf_pool;
800 struct pci_pool *lpfc_hrb_pool; /* header receive buffer pool */
801 struct pci_pool *lpfc_drb_pool; /* data receive buffer pool */
802 struct pci_pool *lpfc_hbq_pool; /* SLI3 hbq buffer pool */
803 struct lpfc_dma_pool lpfc_mbuf_safety_pool;
804
805 mempool_t *mbox_mem_pool;
806 mempool_t *nlp_mem_pool;
807 mempool_t *rrq_pool;
808
809 struct fc_host_statistics link_stats;
810 enum intr_type_t intr_type;
811 uint32_t intr_mode;
812 #define LPFC_INTR_ERROR 0xFFFFFFFF
813 struct msix_entry msix_entries[LPFC_MSIX_VECTORS];
814
815 struct list_head port_list;
816 struct lpfc_vport *pport; /* physical lpfc_vport pointer */
817 uint16_t max_vpi; /* Maximum virtual nports */
818 #define LPFC_MAX_VPI 0xFFFF /* Max number of VPI supported */
819 uint16_t max_vports; /*
820 * For IOV HBAs max_vpi can change
821 * after a reset. max_vports is max
822 * number of vports present. This can
823 * be greater than max_vpi.
824 */
825 uint16_t vpi_base;
826 uint16_t vfi_base;
827 unsigned long *vpi_bmask; /* vpi allocation table */
828 uint16_t *vpi_ids;
829 uint16_t vpi_count;
830 struct list_head lpfc_vpi_blk_list;
831
832 /* Data structure used by fabric iocb scheduler */
833 struct list_head fabric_iocb_list;
834 atomic_t fabric_iocb_count;
835 struct timer_list fabric_block_timer;
836 unsigned long bit_flags;
837 #define FABRIC_COMANDS_BLOCKED 0
838 atomic_t num_rsrc_err;
839 atomic_t num_cmd_success;
840 unsigned long last_rsrc_error_time;
841 unsigned long last_ramp_down_time;
842 unsigned long last_ramp_up_time;
843 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
844 struct dentry *hba_debugfs_root;
845 atomic_t debugfs_vport_count;
846 struct dentry *debug_hbqinfo;
847 struct dentry *debug_dumpHostSlim;
848 struct dentry *debug_dumpHBASlim;
849 struct dentry *debug_dumpData; /* BlockGuard BPL*/
850 struct dentry *debug_dumpDif; /* BlockGuard BPL*/
851 struct dentry *debug_slow_ring_trc;
852 struct lpfc_debugfs_trc *slow_ring_trc;
853 atomic_t slow_ring_trc_cnt;
854 /* iDiag debugfs sub-directory */
855 struct dentry *idiag_root;
856 struct dentry *idiag_pci_cfg;
857 struct dentry *idiag_bar_acc;
858 struct dentry *idiag_que_info;
859 struct dentry *idiag_que_acc;
860 struct dentry *idiag_drb_acc;
861 struct dentry *idiag_ctl_acc;
862 struct dentry *idiag_mbx_acc;
863 struct dentry *idiag_ext_acc;
864 #endif
865
866 /* Used for deferred freeing of ELS data buffers */
867 struct list_head elsbuf;
868 int elsbuf_cnt;
869 int elsbuf_prev_cnt;
870
871 uint8_t temp_sensor_support;
872 /* Fields used for heart beat. */
873 unsigned long last_completion_time;
874 unsigned long skipped_hb;
875 struct timer_list hb_tmofunc;
876 uint8_t hb_outstanding;
877 struct timer_list rrq_tmr;
878 enum hba_temp_state over_temp_state;
879 /* ndlp reference management */
880 spinlock_t ndlp_lock;
881 /*
882 * Following bit will be set for all buffer tags which are not
883 * associated with any HBQ.
884 */
885 #define QUE_BUFTAG_BIT (1<<31)
886 uint32_t buffer_tag_count;
887 int wait_4_mlo_maint_flg;
888 wait_queue_head_t wait_4_mlo_m_q;
889 /* data structure used for latency data collection */
890 #define LPFC_NO_BUCKET 0
891 #define LPFC_LINEAR_BUCKET 1
892 #define LPFC_POWER2_BUCKET 2
893 uint8_t bucket_type;
894 uint32_t bucket_base;
895 uint32_t bucket_step;
896
897 /* Maximum number of events that can be outstanding at any time*/
898 #define LPFC_MAX_EVT_COUNT 512
899 atomic_t fast_event_count;
900 uint32_t fcoe_eventtag;
901 uint32_t fcoe_eventtag_at_fcf_scan;
902 struct lpfc_fcf fcf;
903 uint8_t fc_map[3];
904 uint8_t valid_vlan;
905 uint16_t vlan_id;
906 struct list_head fcf_conn_rec_list;
907
908 spinlock_t ct_ev_lock; /* synchronize access to ct_ev_waiters */
909 struct list_head ct_ev_waiters;
910 struct unsol_rcv_ct_ctx ct_ctx[64];
911 uint32_t ctx_idx;
912
913 uint8_t menlo_flag; /* menlo generic flags */
914 #define HBA_MENLO_SUPPORT 0x1 /* HBA supports menlo commands */
915 uint32_t iocb_cnt;
916 uint32_t iocb_max;
917 atomic_t sdev_cnt;
918 uint8_t fips_spec_rev;
919 uint8_t fips_level;
920 };
921
922 static inline struct Scsi_Host *
923 lpfc_shost_from_vport(struct lpfc_vport *vport)
924 {
925 return container_of((void *) vport, struct Scsi_Host, hostdata[0]);
926 }
927
928 static inline void
929 lpfc_set_loopback_flag(struct lpfc_hba *phba)
930 {
931 if (phba->cfg_topology == FLAGS_LOCAL_LB)
932 phba->link_flag |= LS_LOOPBACK_MODE;
933 else
934 phba->link_flag &= ~LS_LOOPBACK_MODE;
935 }
936
937 static inline int
938 lpfc_is_link_up(struct lpfc_hba *phba)
939 {
940 return phba->link_state == LPFC_LINK_UP ||
941 phba->link_state == LPFC_CLEAR_LA ||
942 phba->link_state == LPFC_HBA_READY;
943 }
944
945 static inline void
946 lpfc_worker_wake_up(struct lpfc_hba *phba)
947 {
948 /* Set the lpfc data pending flag */
949 set_bit(LPFC_DATA_READY, &phba->data_flags);
950
951 /* Wake up worker thread */
952 wake_up(&phba->work_waitq);
953 return;
954 }
955
956 static inline int
957 lpfc_readl(void __iomem *addr, uint32_t *data)
958 {
959 uint32_t temp;
960 temp = readl(addr);
961 if (temp == 0xffffffff)
962 return -EIO;
963 *data = temp;
964 return 0;
965 }
966
967 static inline int
968 lpfc_sli_read_hs(struct lpfc_hba *phba)
969 {
970 /*
971 * There was a link/board error. Read the status register to retrieve
972 * the error event and process it.
973 */
974 phba->sli.slistat.err_attn_event++;
975
976 /* Save status info and check for unplug error */
977 if (lpfc_readl(phba->HSregaddr, &phba->work_hs) ||
978 lpfc_readl(phba->MBslimaddr + 0xa8, &phba->work_status[0]) ||
979 lpfc_readl(phba->MBslimaddr + 0xac, &phba->work_status[1])) {
980 return -EIO;
981 }
982
983 /* Clear chip Host Attention error bit */
984 writel(HA_ERATT, phba->HAregaddr);
985 readl(phba->HAregaddr); /* flush */
986 phba->pport->stopped = 1;
987
988 return 0;
989 }
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