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Avoid beyond bounds copy while caching ACL
[zen-stable.git] / drivers / scsi / lpfc / lpfc.h
blob825f9307417a8dcdb4240763476ad41107c0d02b
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 struct lpfc_hba;
251
252
253 enum discovery_state {
254 LPFC_VPORT_UNKNOWN = 0, /* vport state is unknown */
255 LPFC_VPORT_FAILED = 1, /* vport has failed */
256 LPFC_LOCAL_CFG_LINK = 6, /* local NPORT Id configured */
257 LPFC_FLOGI = 7, /* FLOGI sent to Fabric */
258 LPFC_FDISC = 8, /* FDISC sent for vport */
259 LPFC_FABRIC_CFG_LINK = 9, /* Fabric assigned NPORT Id
260 * configured */
261 LPFC_NS_REG = 10, /* Register with NameServer */
262 LPFC_NS_QRY = 11, /* Query NameServer for NPort ID list */
263 LPFC_BUILD_DISC_LIST = 12, /* Build ADISC and PLOGI lists for
264 * device authentication / discovery */
265 LPFC_DISC_AUTH = 13, /* Processing ADISC list */
266 LPFC_VPORT_READY = 32,
267 };
268
269 enum hba_state {
270 LPFC_LINK_UNKNOWN = 0, /* HBA state is unknown */
271 LPFC_WARM_START = 1, /* HBA state after selective reset */
272 LPFC_INIT_START = 2, /* Initial state after board reset */
273 LPFC_INIT_MBX_CMDS = 3, /* Initialize HBA with mbox commands */
274 LPFC_LINK_DOWN = 4, /* HBA initialized, link is down */
275 LPFC_LINK_UP = 5, /* Link is up - issue READ_LA */
276 LPFC_CLEAR_LA = 6, /* authentication cmplt - issue
277 * CLEAR_LA */
278 LPFC_HBA_READY = 32,
279 LPFC_HBA_ERROR = -1
280 };
281
282 struct lpfc_vport {
283 struct lpfc_hba *phba;
284 struct list_head listentry;
285 uint8_t port_type;
286 #define LPFC_PHYSICAL_PORT 1
287 #define LPFC_NPIV_PORT 2
288 #define LPFC_FABRIC_PORT 3
289 enum discovery_state port_state;
290
291 uint16_t vpi;
292 uint16_t vfi;
293 uint8_t vpi_state;
294 #define LPFC_VPI_REGISTERED 0x1
295
296 uint32_t fc_flag; /* FC flags */
297 /* Several of these flags are HBA centric and should be moved to
298 * phba->link_flag (e.g. FC_PTP, FC_PUBLIC_LOOP)
299 */
300 #define FC_PT2PT 0x1 /* pt2pt with no fabric */
301 #define FC_PT2PT_PLOGI 0x2 /* pt2pt initiate PLOGI */
302 #define FC_DISC_TMO 0x4 /* Discovery timer running */
303 #define FC_PUBLIC_LOOP 0x8 /* Public loop */
304 #define FC_LBIT 0x10 /* LOGIN bit in loopinit set */
305 #define FC_RSCN_MODE 0x20 /* RSCN cmd rcv'ed */
306 #define FC_NLP_MORE 0x40 /* More node to process in node tbl */
307 #define FC_OFFLINE_MODE 0x80 /* Interface is offline for diag */
308 #define FC_FABRIC 0x100 /* We are fabric attached */
309 #define FC_VPORT_LOGO_RCVD 0x200 /* LOGO received on vport */
310 #define FC_RSCN_DISCOVERY 0x400 /* Auth all devices after RSCN */
311 #define FC_LOGO_RCVD_DID_CHNG 0x800 /* FDISC on phys port detect DID chng*/
312 #define FC_SCSI_SCAN_TMO 0x4000 /* scsi scan timer running */
313 #define FC_ABORT_DISCOVERY 0x8000 /* we want to abort discovery */
314 #define FC_NDISC_ACTIVE 0x10000 /* NPort discovery active */
315 #define FC_BYPASSED_MODE 0x20000 /* NPort is in bypassed mode */
316 #define FC_VPORT_NEEDS_REG_VPI 0x80000 /* Needs to have its vpi registered */
317 #define FC_RSCN_DEFERRED 0x100000 /* A deferred RSCN being processed */
318 #define FC_VPORT_NEEDS_INIT_VPI 0x200000 /* Need to INIT_VPI before FDISC */
319 #define FC_VPORT_CVL_RCVD 0x400000 /* VLink failed due to CVL */
320 #define FC_VFI_REGISTERED 0x800000 /* VFI is registered */
321 #define FC_FDISC_COMPLETED 0x1000000/* FDISC completed */
322 #define FC_DISC_DELAYED 0x2000000/* Delay NPort discovery */
323
324 uint32_t ct_flags;
325 #define FC_CT_RFF_ID 0x1 /* RFF_ID accepted by switch */
326 #define FC_CT_RNN_ID 0x2 /* RNN_ID accepted by switch */
327 #define FC_CT_RSNN_NN 0x4 /* RSNN_NN accepted by switch */
328 #define FC_CT_RSPN_ID 0x8 /* RSPN_ID accepted by switch */
329 #define FC_CT_RFT_ID 0x10 /* RFT_ID accepted by switch */
330
331 struct list_head fc_nodes;
332
333 /* Keep counters for the number of entries in each list. */
334 uint16_t fc_plogi_cnt;
335 uint16_t fc_adisc_cnt;
336 uint16_t fc_reglogin_cnt;
337 uint16_t fc_prli_cnt;
338 uint16_t fc_unmap_cnt;
339 uint16_t fc_map_cnt;
340 uint16_t fc_npr_cnt;
341 uint16_t fc_unused_cnt;
342 struct serv_parm fc_sparam; /* buffer for our service parameters */
343
344 uint32_t fc_myDID; /* fibre channel S_ID */
345 uint32_t fc_prevDID; /* previous fibre channel S_ID */
346 struct lpfc_name fabric_portname;
347 struct lpfc_name fabric_nodename;
348
349 int32_t stopped; /* HBA has not been restarted since last ERATT */
350 uint8_t fc_linkspeed; /* Link speed after last READ_LA */
351
352 uint32_t num_disc_nodes; /*in addition to hba_state */
353
354 uint32_t fc_nlp_cnt; /* outstanding NODELIST requests */
355 uint32_t fc_rscn_id_cnt; /* count of RSCNs payloads in list */
356 uint32_t fc_rscn_flush; /* flag use of fc_rscn_id_list */
357 struct lpfc_dmabuf *fc_rscn_id_list[FC_MAX_HOLD_RSCN];
358 struct lpfc_name fc_nodename; /* fc nodename */
359 struct lpfc_name fc_portname; /* fc portname */
360
361 struct lpfc_work_evt disc_timeout_evt;
362
363 struct timer_list fc_disctmo; /* Discovery rescue timer */
364 uint8_t fc_ns_retry; /* retries for fabric nameserver */
365 uint32_t fc_prli_sent; /* cntr for outstanding PRLIs */
366
367 spinlock_t work_port_lock;
368 uint32_t work_port_events; /* Timeout to be handled */
369 #define WORKER_DISC_TMO 0x1 /* vport: Discovery timeout */
370 #define WORKER_ELS_TMO 0x2 /* vport: ELS timeout */
371 #define WORKER_FDMI_TMO 0x4 /* vport: FDMI timeout */
372 #define WORKER_DELAYED_DISC_TMO 0x8 /* vport: delayed discovery */
373
374 #define WORKER_MBOX_TMO 0x100 /* hba: MBOX timeout */
375 #define WORKER_HB_TMO 0x200 /* hba: Heart beat timeout */
376 #define WORKER_FABRIC_BLOCK_TMO 0x400 /* hba: fabric block timeout */
377 #define WORKER_RAMP_DOWN_QUEUE 0x800 /* hba: Decrease Q depth */
378 #define WORKER_RAMP_UP_QUEUE 0x1000 /* hba: Increase Q depth */
379 #define WORKER_SERVICE_TXQ 0x2000 /* hba: IOCBs on the txq */
380
381 struct timer_list fc_fdmitmo;
382 struct timer_list els_tmofunc;
383 struct timer_list delayed_disc_tmo;
384
385 int unreg_vpi_cmpl;
386
387 uint8_t load_flag;
388 #define FC_LOADING 0x1 /* HBA in process of loading drvr */
389 #define FC_UNLOADING 0x2 /* HBA in process of unloading drvr */
390 /* Vport Config Parameters */
391 uint32_t cfg_scan_down;
392 uint32_t cfg_lun_queue_depth;
393 uint32_t cfg_nodev_tmo;
394 uint32_t cfg_devloss_tmo;
395 uint32_t cfg_restrict_login;
396 uint32_t cfg_peer_port_login;
397 uint32_t cfg_fcp_class;
398 uint32_t cfg_use_adisc;
399 uint32_t cfg_fdmi_on;
400 uint32_t cfg_discovery_threads;
401 uint32_t cfg_log_verbose;
402 uint32_t cfg_max_luns;
403 uint32_t cfg_enable_da_id;
404 uint32_t cfg_max_scsicmpl_time;
405 uint32_t cfg_tgt_queue_depth;
406
407 uint32_t dev_loss_tmo_changed;
408
409 struct fc_vport *fc_vport;
410
411 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
412 struct dentry *debug_disc_trc;
413 struct dentry *debug_nodelist;
414 struct dentry *vport_debugfs_root;
415 struct lpfc_debugfs_trc *disc_trc;
416 atomic_t disc_trc_cnt;
417 #endif
418 uint8_t stat_data_enabled;
419 uint8_t stat_data_blocked;
420 struct list_head rcv_buffer_list;
421 unsigned long rcv_buffer_time_stamp;
422 uint32_t vport_flag;
423 #define STATIC_VPORT 1
424 };
425
426 struct hbq_s {
427 uint16_t entry_count; /* Current number of HBQ slots */
428 uint16_t buffer_count; /* Current number of buffers posted */
429 uint32_t next_hbqPutIdx; /* Index to next HBQ slot to use */
430 uint32_t hbqPutIdx; /* HBQ slot to use */
431 uint32_t local_hbqGetIdx; /* Local copy of Get index from Port */
432 void *hbq_virt; /* Virtual ptr to this hbq */
433 struct list_head hbq_buffer_list; /* buffers assigned to this HBQ */
434 /* Callback for HBQ buffer allocation */
435 struct hbq_dmabuf *(*hbq_alloc_buffer) (struct lpfc_hba *);
436 /* Callback for HBQ buffer free */
437 void (*hbq_free_buffer) (struct lpfc_hba *,
438 struct hbq_dmabuf *);
439 };
440
441 #define LPFC_MAX_HBQS 4
442 /* this matches the position in the lpfc_hbq_defs array */
443 #define LPFC_ELS_HBQ 0
444 #define LPFC_EXTRA_HBQ 1
445
446 enum hba_temp_state {
447 HBA_NORMAL_TEMP,
448 HBA_OVER_TEMP
449 };
450
451 enum intr_type_t {
452 NONE = 0,
453 INTx,
454 MSI,
455 MSIX,
456 };
457
458 struct unsol_rcv_ct_ctx {
459 uint32_t ctxt_id;
460 uint32_t SID;
461 uint32_t flags;
462 #define UNSOL_VALID 0x00000001
463 uint16_t oxid;
464 uint16_t rxid;
465 };
466
467 #define LPFC_USER_LINK_SPEED_AUTO 0 /* auto select (default)*/
468 #define LPFC_USER_LINK_SPEED_1G 1 /* 1 Gigabaud */
469 #define LPFC_USER_LINK_SPEED_2G 2 /* 2 Gigabaud */
470 #define LPFC_USER_LINK_SPEED_4G 4 /* 4 Gigabaud */
471 #define LPFC_USER_LINK_SPEED_8G 8 /* 8 Gigabaud */
472 #define LPFC_USER_LINK_SPEED_10G 10 /* 10 Gigabaud */
473 #define LPFC_USER_LINK_SPEED_16G 16 /* 16 Gigabaud */
474 #define LPFC_USER_LINK_SPEED_MAX LPFC_USER_LINK_SPEED_16G
475 #define LPFC_USER_LINK_SPEED_BITMAP ((1 << LPFC_USER_LINK_SPEED_16G) | \
476 (1 << LPFC_USER_LINK_SPEED_10G) | \
477 (1 << LPFC_USER_LINK_SPEED_8G) | \
478 (1 << LPFC_USER_LINK_SPEED_4G) | \
479 (1 << LPFC_USER_LINK_SPEED_2G) | \
480 (1 << LPFC_USER_LINK_SPEED_1G) | \
481 (1 << LPFC_USER_LINK_SPEED_AUTO))
482 #define LPFC_LINK_SPEED_STRING "0, 1, 2, 4, 8, 10, 16"
483
484 enum nemb_type {
485 nemb_mse = 1,
486 nemb_hbd
487 };
488
489 enum mbox_type {
490 mbox_rd = 1,
491 mbox_wr
492 };
493
494 enum dma_type {
495 dma_mbox = 1,
496 dma_ebuf
497 };
498
499 enum sta_type {
500 sta_pre_addr = 1,
501 sta_pos_addr
502 };
503
504 struct lpfc_mbox_ext_buf_ctx {
505 uint32_t state;
506 #define LPFC_BSG_MBOX_IDLE 0
507 #define LPFC_BSG_MBOX_HOST 1
508 #define LPFC_BSG_MBOX_PORT 2
509 #define LPFC_BSG_MBOX_DONE 3
510 #define LPFC_BSG_MBOX_ABTS 4
511 enum nemb_type nembType;
512 enum mbox_type mboxType;
513 uint32_t numBuf;
514 uint32_t mbxTag;
515 uint32_t seqNum;
516 struct lpfc_dmabuf *mbx_dmabuf;
517 struct list_head ext_dmabuf_list;
518 };
519
520 struct lpfc_hba {
521 /* SCSI interface function jump table entries */
522 int (*lpfc_new_scsi_buf)
523 (struct lpfc_vport *, int);
524 struct lpfc_scsi_buf * (*lpfc_get_scsi_buf)
525 (struct lpfc_hba *, struct lpfc_nodelist *);
526 int (*lpfc_scsi_prep_dma_buf)
527 (struct lpfc_hba *, struct lpfc_scsi_buf *);
528 void (*lpfc_scsi_unprep_dma_buf)
529 (struct lpfc_hba *, struct lpfc_scsi_buf *);
530 void (*lpfc_release_scsi_buf)
531 (struct lpfc_hba *, struct lpfc_scsi_buf *);
532 void (*lpfc_rampdown_queue_depth)
533 (struct lpfc_hba *);
534 void (*lpfc_scsi_prep_cmnd)
535 (struct lpfc_vport *, struct lpfc_scsi_buf *,
536 struct lpfc_nodelist *);
537 /* IOCB interface function jump table entries */
538 int (*__lpfc_sli_issue_iocb)
539 (struct lpfc_hba *, uint32_t,
540 struct lpfc_iocbq *, uint32_t);
541 void (*__lpfc_sli_release_iocbq)(struct lpfc_hba *,
542 struct lpfc_iocbq *);
543 int (*lpfc_hba_down_post)(struct lpfc_hba *phba);
544
545
546 IOCB_t * (*lpfc_get_iocb_from_iocbq)
547 (struct lpfc_iocbq *);
548 void (*lpfc_scsi_cmd_iocb_cmpl)
549 (struct lpfc_hba *, struct lpfc_iocbq *, struct lpfc_iocbq *);
550
551 /* MBOX interface function jump table entries */
552 int (*lpfc_sli_issue_mbox)
553 (struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t);
554 /* Slow-path IOCB process function jump table entries */
555 void (*lpfc_sli_handle_slow_ring_event)
556 (struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
557 uint32_t mask);
558 /* INIT device interface function jump table entries */
559 int (*lpfc_sli_hbq_to_firmware)
560 (struct lpfc_hba *, uint32_t, struct hbq_dmabuf *);
561 int (*lpfc_sli_brdrestart)
562 (struct lpfc_hba *);
563 int (*lpfc_sli_brdready)
564 (struct lpfc_hba *, uint32_t);
565 void (*lpfc_handle_eratt)
566 (struct lpfc_hba *);
567 void (*lpfc_stop_port)
568 (struct lpfc_hba *);
569 int (*lpfc_hba_init_link)
570 (struct lpfc_hba *, uint32_t);
571 int (*lpfc_hba_down_link)
572 (struct lpfc_hba *, uint32_t);
573 int (*lpfc_selective_reset)
574 (struct lpfc_hba *);
575
576 /* SLI4 specific HBA data structure */
577 struct lpfc_sli4_hba sli4_hba;
578
579 struct lpfc_sli sli;
580 uint8_t pci_dev_grp; /* lpfc PCI dev group: 0x0, 0x1, 0x2,... */
581 uint32_t sli_rev; /* SLI2, SLI3, or SLI4 */
582 uint32_t sli3_options; /* Mask of enabled SLI3 options */
583 #define LPFC_SLI3_HBQ_ENABLED 0x01
584 #define LPFC_SLI3_NPIV_ENABLED 0x02
585 #define LPFC_SLI3_VPORT_TEARDOWN 0x04
586 #define LPFC_SLI3_CRP_ENABLED 0x08
587 #define LPFC_SLI3_BG_ENABLED 0x20
588 #define LPFC_SLI3_DSS_ENABLED 0x40
589 #define LPFC_SLI4_PERFH_ENABLED 0x80
590 #define LPFC_SLI4_PHWQ_ENABLED 0x100
591 uint32_t iocb_cmd_size;
592 uint32_t iocb_rsp_size;
593
594 enum hba_state link_state;
595 uint32_t link_flag; /* link state flags */
596 #define LS_LOOPBACK_MODE 0x1 /* NPort is in Loopback mode */
597 /* This flag is set while issuing */
598 /* INIT_LINK mailbox command */
599 #define LS_NPIV_FAB_SUPPORTED 0x2 /* Fabric supports NPIV */
600 #define LS_IGNORE_ERATT 0x4 /* intr handler should ignore ERATT */
601
602 uint32_t hba_flag; /* hba generic flags */
603 #define HBA_ERATT_HANDLED 0x1 /* This flag is set when eratt handled */
604 #define DEFER_ERATT 0x2 /* Deferred error attention in progress */
605 #define HBA_FCOE_MODE 0x4 /* HBA function in FCoE Mode */
606 #define HBA_SP_QUEUE_EVT 0x8 /* Slow-path qevt posted to worker thread*/
607 #define HBA_POST_RECEIVE_BUFFER 0x10 /* Rcv buffers need to be posted */
608 #define FCP_XRI_ABORT_EVENT 0x20
609 #define ELS_XRI_ABORT_EVENT 0x40
610 #define ASYNC_EVENT 0x80
611 #define LINK_DISABLED 0x100 /* Link disabled by user */
612 #define FCF_TS_INPROG 0x200 /* FCF table scan in progress */
613 #define FCF_RR_INPROG 0x400 /* FCF roundrobin flogi in progress */
614 #define HBA_FIP_SUPPORT 0x800 /* FIP support in HBA */
615 #define HBA_AER_ENABLED 0x1000 /* AER enabled with HBA */
616 #define HBA_DEVLOSS_TMO 0x2000 /* HBA in devloss timeout */
617 #define HBA_RRQ_ACTIVE 0x4000 /* process the rrq active list */
618 uint32_t fcp_ring_in_use; /* When polling test if intr-hndlr active*/
619 struct lpfc_dmabuf slim2p;
620
621 MAILBOX_t *mbox;
622 uint32_t *mbox_ext;
623 struct lpfc_mbox_ext_buf_ctx mbox_ext_buf_ctx;
624 uint32_t ha_copy;
625 struct _PCB *pcb;
626 struct _IOCB *IOCBs;
627
628 struct lpfc_dmabuf hbqslimp;
629
630 uint16_t pci_cfg_value;
631
632 uint8_t fc_linkspeed; /* Link speed after last READ_LA */
633
634 uint32_t fc_eventTag; /* event tag for link attention */
635 uint32_t link_events;
636
637 /* These fields used to be binfo */
638 uint32_t fc_pref_DID; /* preferred D_ID */
639 uint8_t fc_pref_ALPA; /* preferred AL_PA */
640 uint32_t fc_edtovResol; /* E_D_TOV timer resolution */
641 uint32_t fc_edtov; /* E_D_TOV timer value */
642 uint32_t fc_arbtov; /* ARB_TOV timer value */
643 uint32_t fc_ratov; /* R_A_TOV timer value */
644 uint32_t fc_rttov; /* R_T_TOV timer value */
645 uint32_t fc_altov; /* AL_TOV timer value */
646 uint32_t fc_crtov; /* C_R_TOV timer value */
647 uint32_t fc_citov; /* C_I_TOV timer value */
648
649 struct serv_parm fc_fabparam; /* fabric service parameters buffer */
650 uint8_t alpa_map[128]; /* AL_PA map from READ_LA */
651
652 uint32_t lmt;
653
654 uint32_t fc_topology; /* link topology, from LINK INIT */
655
656 struct lpfc_stats fc_stat;
657
658 struct lpfc_nodelist fc_fcpnodev; /* nodelist entry for no device */
659 uint32_t nport_event_cnt; /* timestamp for nlplist entry */
660
661 uint8_t wwnn[8];
662 uint8_t wwpn[8];
663 uint32_t RandomData[7];
664
665 /* HBA Config Parameters */
666 uint32_t cfg_ack0;
667 uint32_t cfg_enable_npiv;
668 uint32_t cfg_enable_rrq;
669 uint32_t cfg_topology;
670 uint32_t cfg_link_speed;
671 #define LPFC_FCF_FOV 1 /* Fast fcf failover */
672 #define LPFC_FCF_PRIORITY 2 /* Priority fcf failover */
673 uint32_t cfg_fcf_failover_policy;
674 uint32_t cfg_cr_delay;
675 uint32_t cfg_cr_count;
676 uint32_t cfg_multi_ring_support;
677 uint32_t cfg_multi_ring_rctl;
678 uint32_t cfg_multi_ring_type;
679 uint32_t cfg_poll;
680 uint32_t cfg_poll_tmo;
681 uint32_t cfg_use_msi;
682 uint32_t cfg_fcp_imax;
683 uint32_t cfg_fcp_wq_count;
684 uint32_t cfg_fcp_eq_count;
685 uint32_t cfg_sg_seg_cnt;
686 uint32_t cfg_prot_sg_seg_cnt;
687 uint32_t cfg_sg_dma_buf_size;
688 uint64_t cfg_soft_wwnn;
689 uint64_t cfg_soft_wwpn;
690 uint32_t cfg_hba_queue_depth;
691 uint32_t cfg_enable_hba_reset;
692 uint32_t cfg_enable_hba_heartbeat;
693 uint32_t cfg_enable_bg;
694 uint32_t cfg_hostmem_hgp;
695 uint32_t cfg_log_verbose;
696 uint32_t cfg_aer_support;
697 uint32_t cfg_sriov_nr_virtfn;
698 uint32_t cfg_iocb_cnt;
699 uint32_t cfg_suppress_link_up;
700 #define LPFC_INITIALIZE_LINK 0 /* do normal init_link mbox */
701 #define LPFC_DELAY_INIT_LINK 1 /* layered driver hold off */
702 #define LPFC_DELAY_INIT_LINK_INDEFINITELY 2 /* wait, manual intervention */
703 uint32_t cfg_enable_dss;
704 lpfc_vpd_t vpd; /* vital product data */
705
706 struct pci_dev *pcidev;
707 struct list_head work_list;
708 uint32_t work_ha; /* Host Attention Bits for WT */
709 uint32_t work_ha_mask; /* HA Bits owned by WT */
710 uint32_t work_hs; /* HS stored in case of ERRAT */
711 uint32_t work_status[2]; /* Extra status from SLIM */
712
713 wait_queue_head_t work_waitq;
714 struct task_struct *worker_thread;
715 unsigned long data_flags;
716
717 uint32_t hbq_in_use; /* HBQs in use flag */
718 struct list_head rb_pend_list; /* Received buffers to be processed */
719 uint32_t hbq_count; /* Count of configured HBQs */
720 struct hbq_s hbqs[LPFC_MAX_HBQS]; /* local copy of hbq indicies */
721
722 uint32_t fcp_qidx; /* next work queue to post work to */
723
724 unsigned long pci_bar0_map; /* Physical address for PCI BAR0 */
725 unsigned long pci_bar1_map; /* Physical address for PCI BAR1 */
726 unsigned long pci_bar2_map; /* Physical address for PCI BAR2 */
727 void __iomem *slim_memmap_p; /* Kernel memory mapped address for
728 PCI BAR0 */
729 void __iomem *ctrl_regs_memmap_p;/* Kernel memory mapped address for
730 PCI BAR2 */
731
732 void __iomem *MBslimaddr; /* virtual address for mbox cmds */
733 void __iomem *HAregaddr; /* virtual address for host attn reg */
734 void __iomem *CAregaddr; /* virtual address for chip attn reg */
735 void __iomem *HSregaddr; /* virtual address for host status
736 reg */
737 void __iomem *HCregaddr; /* virtual address for host ctl reg */
738
739 struct lpfc_hgp __iomem *host_gp; /* Host side get/put pointers */
740 struct lpfc_pgp *port_gp;
741 uint32_t __iomem *hbq_put; /* Address in SLIM to HBQ put ptrs */
742 uint32_t *hbq_get; /* Host mem address of HBQ get ptrs */
743
744 int brd_no; /* FC board number */
745 char SerialNumber[32]; /* adapter Serial Number */
746 char OptionROMVersion[32]; /* adapter BIOS / Fcode version */
747 char ModelDesc[256]; /* Model Description */
748 char ModelName[80]; /* Model Name */
749 char ProgramType[256]; /* Program Type */
750 char Port[20]; /* Port No */
751 uint8_t vpd_flag; /* VPD data flag */
752
753 #define VPD_MODEL_DESC 0x1 /* valid vpd model description */
754 #define VPD_MODEL_NAME 0x2 /* valid vpd model name */
755 #define VPD_PROGRAM_TYPE 0x4 /* valid vpd program type */
756 #define VPD_PORT 0x8 /* valid vpd port data */
757 #define VPD_MASK 0xf /* mask for any vpd data */
758
759 uint8_t soft_wwn_enable;
760
761 struct timer_list fcp_poll_timer;
762 struct timer_list eratt_poll;
763
764 /*
765 * stat counters
766 */
767 uint64_t fc4InputRequests;
768 uint64_t fc4OutputRequests;
769 uint64_t fc4ControlRequests;
770 uint64_t bg_guard_err_cnt;
771 uint64_t bg_apptag_err_cnt;
772 uint64_t bg_reftag_err_cnt;
773
774 /* fastpath list. */
775 spinlock_t scsi_buf_list_lock;
776 struct list_head lpfc_scsi_buf_list;
777 uint32_t total_scsi_bufs;
778 struct list_head lpfc_iocb_list;
779 uint32_t total_iocbq_bufs;
780 struct list_head active_rrq_list;
781 spinlock_t hbalock;
782
783 /* pci_mem_pools */
784 struct pci_pool *lpfc_scsi_dma_buf_pool;
785 struct pci_pool *lpfc_mbuf_pool;
786 struct pci_pool *lpfc_hrb_pool; /* header receive buffer pool */
787 struct pci_pool *lpfc_drb_pool; /* data receive buffer pool */
788 struct pci_pool *lpfc_hbq_pool; /* SLI3 hbq buffer pool */
789 struct lpfc_dma_pool lpfc_mbuf_safety_pool;
790
791 mempool_t *mbox_mem_pool;
792 mempool_t *nlp_mem_pool;
793 mempool_t *rrq_pool;
794
795 struct fc_host_statistics link_stats;
796 enum intr_type_t intr_type;
797 uint32_t intr_mode;
798 #define LPFC_INTR_ERROR 0xFFFFFFFF
799 struct msix_entry msix_entries[LPFC_MSIX_VECTORS];
800
801 struct list_head port_list;
802 struct lpfc_vport *pport; /* physical lpfc_vport pointer */
803 uint16_t max_vpi; /* Maximum virtual nports */
804 #define LPFC_MAX_VPI 0xFFFF /* Max number of VPI supported */
805 uint16_t max_vports; /*
806 * For IOV HBAs max_vpi can change
807 * after a reset. max_vports is max
808 * number of vports present. This can
809 * be greater than max_vpi.
810 */
811 uint16_t vpi_base;
812 uint16_t vfi_base;
813 unsigned long *vpi_bmask; /* vpi allocation table */
814 uint16_t *vpi_ids;
815 uint16_t vpi_count;
816 struct list_head lpfc_vpi_blk_list;
817
818 /* Data structure used by fabric iocb scheduler */
819 struct list_head fabric_iocb_list;
820 atomic_t fabric_iocb_count;
821 struct timer_list fabric_block_timer;
822 unsigned long bit_flags;
823 #define FABRIC_COMANDS_BLOCKED 0
824 atomic_t num_rsrc_err;
825 atomic_t num_cmd_success;
826 unsigned long last_rsrc_error_time;
827 unsigned long last_ramp_down_time;
828 unsigned long last_ramp_up_time;
829 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
830 struct dentry *hba_debugfs_root;
831 atomic_t debugfs_vport_count;
832 struct dentry *debug_hbqinfo;
833 struct dentry *debug_dumpHostSlim;
834 struct dentry *debug_dumpHBASlim;
835 struct dentry *debug_dumpData; /* BlockGuard BPL */
836 struct dentry *debug_dumpDif; /* BlockGuard BPL */
837 struct dentry *debug_InjErrLBA; /* LBA to inject errors at */
838 struct dentry *debug_writeGuard; /* inject write guard_tag errors */
839 struct dentry *debug_writeApp; /* inject write app_tag errors */
840 struct dentry *debug_writeRef; /* inject write ref_tag errors */
841 struct dentry *debug_readApp; /* inject read app_tag errors */
842 struct dentry *debug_readRef; /* inject read ref_tag errors */
843
844 /* T10 DIF error injection */
845 uint32_t lpfc_injerr_wgrd_cnt;
846 uint32_t lpfc_injerr_wapp_cnt;
847 uint32_t lpfc_injerr_wref_cnt;
848 uint32_t lpfc_injerr_rapp_cnt;
849 uint32_t lpfc_injerr_rref_cnt;
850 sector_t lpfc_injerr_lba;
851 #define LPFC_INJERR_LBA_OFF (sector_t)0xffffffffffffffff
852
853 struct dentry *debug_slow_ring_trc;
854 struct lpfc_debugfs_trc *slow_ring_trc;
855 atomic_t slow_ring_trc_cnt;
856 /* iDiag debugfs sub-directory */
857 struct dentry *idiag_root;
858 struct dentry *idiag_pci_cfg;
859 struct dentry *idiag_bar_acc;
860 struct dentry *idiag_que_info;
861 struct dentry *idiag_que_acc;
862 struct dentry *idiag_drb_acc;
863 struct dentry *idiag_ctl_acc;
864 struct dentry *idiag_mbx_acc;
865 struct dentry *idiag_ext_acc;
866 #endif
867
868 /* Used for deferred freeing of ELS data buffers */
869 struct list_head elsbuf;
870 int elsbuf_cnt;
871 int elsbuf_prev_cnt;
872
873 uint8_t temp_sensor_support;
874 /* Fields used for heart beat. */
875 unsigned long last_completion_time;
876 unsigned long skipped_hb;
877 struct timer_list hb_tmofunc;
878 uint8_t hb_outstanding;
879 struct timer_list rrq_tmr;
880 enum hba_temp_state over_temp_state;
881 /* ndlp reference management */
882 spinlock_t ndlp_lock;
883 /*
884 * Following bit will be set for all buffer tags which are not
885 * associated with any HBQ.
886 */
887 #define QUE_BUFTAG_BIT (1<<31)
888 uint32_t buffer_tag_count;
889 int wait_4_mlo_maint_flg;
890 wait_queue_head_t wait_4_mlo_m_q;
891 /* data structure used for latency data collection */
892 #define LPFC_NO_BUCKET 0
893 #define LPFC_LINEAR_BUCKET 1
894 #define LPFC_POWER2_BUCKET 2
895 uint8_t bucket_type;
896 uint32_t bucket_base;
897 uint32_t bucket_step;
898
899 /* Maximum number of events that can be outstanding at any time*/
900 #define LPFC_MAX_EVT_COUNT 512
901 atomic_t fast_event_count;
902 uint32_t fcoe_eventtag;
903 uint32_t fcoe_eventtag_at_fcf_scan;
904 struct lpfc_fcf fcf;
905 uint8_t fc_map[3];
906 uint8_t valid_vlan;
907 uint16_t vlan_id;
908 struct list_head fcf_conn_rec_list;
909
910 spinlock_t ct_ev_lock; /* synchronize access to ct_ev_waiters */
911 struct list_head ct_ev_waiters;
912 struct unsol_rcv_ct_ctx ct_ctx[64];
913 uint32_t ctx_idx;
914
915 uint8_t menlo_flag; /* menlo generic flags */
916 #define HBA_MENLO_SUPPORT 0x1 /* HBA supports menlo commands */
917 uint32_t iocb_cnt;
918 uint32_t iocb_max;
919 atomic_t sdev_cnt;
920 uint8_t fips_spec_rev;
921 uint8_t fips_level;
922 };
923
924 static inline struct Scsi_Host *
925 lpfc_shost_from_vport(struct lpfc_vport *vport)
926 {
927 return container_of((void *) vport, struct Scsi_Host, hostdata[0]);
928 }
929
930 static inline void
931 lpfc_set_loopback_flag(struct lpfc_hba *phba)
932 {
933 if (phba->cfg_topology == FLAGS_LOCAL_LB)
934 phba->link_flag |= LS_LOOPBACK_MODE;
935 else
936 phba->link_flag &= ~LS_LOOPBACK_MODE;
937 }
938
939 static inline int
940 lpfc_is_link_up(struct lpfc_hba *phba)
941 {
942 return phba->link_state == LPFC_LINK_UP ||
943 phba->link_state == LPFC_CLEAR_LA ||
944 phba->link_state == LPFC_HBA_READY;
945 }
946
947 static inline void
948 lpfc_worker_wake_up(struct lpfc_hba *phba)
949 {
950 /* Set the lpfc data pending flag */
951 set_bit(LPFC_DATA_READY, &phba->data_flags);
952
953 /* Wake up worker thread */
954 wake_up(&phba->work_waitq);
955 return;
956 }
957
958 static inline int
959 lpfc_readl(void __iomem *addr, uint32_t *data)
960 {
961 uint32_t temp;
962 temp = readl(addr);
963 if (temp == 0xffffffff)
964 return -EIO;
965 *data = temp;
966 return 0;
967 }
968
969 static inline int
970 lpfc_sli_read_hs(struct lpfc_hba *phba)
971 {
972 /*
973 * There was a link/board error. Read the status register to retrieve
974 * the error event and process it.
975 */
976 phba->sli.slistat.err_attn_event++;
977
978 /* Save status info and check for unplug error */
979 if (lpfc_readl(phba->HSregaddr, &phba->work_hs) ||
980 lpfc_readl(phba->MBslimaddr + 0xa8, &phba->work_status[0]) ||
981 lpfc_readl(phba->MBslimaddr + 0xac, &phba->work_status[1])) {
982 return -EIO;
983 }
984
985 /* Clear chip Host Attention error bit */
986 writel(HA_ERATT, phba->HAregaddr);
987 readl(phba->HAregaddr); /* flush */
988 phba->pport->stopped = 1;
989
990 return 0;
991 }