1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2007 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
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 *******************************************************************/
22 #include <scsi/scsi_host.h>
24 struct lpfc_sli2_slim
;
26 #define LPFC_MAX_TARGET 256 /* max number of targets supported */
27 #define LPFC_MAX_DISC_THREADS 64 /* max outstanding discovery els
29 #define LPFC_MAX_NS_RETRY 3 /* Number of retry attempts to contact
30 the NameServer before giving up. */
31 #define LPFC_CMD_PER_LUN 3 /* max outstanding cmds per lun */
32 #define LPFC_SG_SEG_CNT 64 /* sg element count per scsi cmnd */
33 #define LPFC_IOCB_LIST_CNT 2250 /* list of IOCBs for fast-path usage. */
34 #define LPFC_Q_RAMP_UP_INTERVAL 120 /* lun q_depth ramp up interval */
37 * Following time intervals are used of adjusting SCSI device
38 * queue depths when there are driver resource error or Firmware
41 #define QUEUE_RAMP_DOWN_INTERVAL (1 * HZ) /* 1 Second */
42 #define QUEUE_RAMP_UP_INTERVAL (300 * HZ) /* 5 minutes */
44 /* Number of exchanges reserved for discovery to complete */
45 #define LPFC_DISC_IOCB_BUFF_COUNT 20
47 #define LPFC_HB_MBOX_INTERVAL 5 /* Heart beat interval in seconds. */
48 #define LPFC_HB_MBOX_TIMEOUT 30 /* Heart beat timeout in seconds. */
50 /* Define macros for 64 bit support */
51 #define putPaddrLow(addr) ((uint32_t) (0xffffffff & (u64)(addr)))
52 #define putPaddrHigh(addr) ((uint32_t) (0xffffffff & (((u64)(addr))>>32)))
53 #define getPaddr(high, low) ((dma_addr_t)( \
54 (( (u64)(high)<<16 ) << 16)|( (u64)(low))))
55 /* Provide maximum configuration definitions. */
56 #define LPFC_DRVR_TIMEOUT 16 /* driver iocb timeout value in sec */
57 #define FC_MAX_ADPTMSG 64
61 enum lpfc_polling_flags
{
62 ENABLE_FCP_RING_POLLING
= 0x1,
63 DISABLE_FCP_RING_INT
= 0x2
66 /* Provide DMA memory definitions the driver uses per port instance. */
68 struct list_head list
;
69 void *virt
; /* virtual address ptr */
70 dma_addr_t phys
; /* mapped address */
73 struct lpfc_dma_pool
{
74 struct lpfc_dmabuf
*elements
;
76 uint32_t current_count
;
80 struct lpfc_dmabuf dbuf
;
84 /* Priority bit. Set value to exceed low water mark in lpfc_mem. */
88 /****************************************************************************/
89 /* Device VPD save area */
90 /****************************************************************************/
91 typedef struct lpfc_vpd
{
92 uint32_t status
; /* vpd status value */
93 uint32_t length
; /* number of bytes actually returned */
95 uint32_t rsvd1
; /* Revision numbers */
103 uint8_t feaLevelHigh
;
105 uint32_t postKernRev
;
107 uint8_t opFwName
[16];
109 uint8_t sli1FwName
[16];
111 uint8_t sli2FwName
[16];
114 #ifdef __BIG_ENDIAN_BITFIELD
115 uint32_t rsvd2
:24; /* Reserved */
116 uint32_t cmv
: 1; /* Configure Max VPIs */
117 uint32_t ccrp
: 1; /* Config Command Ring Polling */
118 uint32_t csah
: 1; /* Configure Synchronous Abort Handling */
119 uint32_t chbs
: 1; /* Cofigure Host Backing store */
120 uint32_t cinb
: 1; /* Enable Interrupt Notification Block */
121 uint32_t cerbm
: 1; /* Configure Enhanced Receive Buf Mgmt */
122 uint32_t cmx
: 1; /* Configure Max XRIs */
123 uint32_t cmr
: 1; /* Configure Max RPIs */
124 #else /* __LITTLE_ENDIAN */
125 uint32_t cmr
: 1; /* Configure Max RPIs */
126 uint32_t cmx
: 1; /* Configure Max XRIs */
127 uint32_t cerbm
: 1; /* Configure Enhanced Receive Buf Mgmt */
128 uint32_t cinb
: 1; /* Enable Interrupt Notification Block */
129 uint32_t chbs
: 1; /* Cofigure Host Backing store */
130 uint32_t csah
: 1; /* Configure Synchronous Abort Handling */
131 uint32_t ccrp
: 1; /* Config Command Ring Polling */
132 uint32_t cmv
: 1; /* Configure Max VPIs */
133 uint32_t rsvd2
:24; /* Reserved */
138 struct lpfc_scsi_buf
;
145 /* Statistics for ELS commands */
147 uint32_t elsRetryExceeded
;
148 uint32_t elsXmitRetry
;
149 uint32_t elsDelayRetry
;
151 uint32_t elsRcvFrame
;
155 uint32_t elsRcvFARPR
;
156 uint32_t elsRcvFLOGI
;
157 uint32_t elsRcvPLOGI
;
158 uint32_t elsRcvADISC
;
159 uint32_t elsRcvPDISC
;
167 uint32_t elsXmitFLOGI
;
168 uint32_t elsXmitFDISC
;
169 uint32_t elsXmitPLOGI
;
170 uint32_t elsXmitPRLI
;
171 uint32_t elsXmitADISC
;
172 uint32_t elsXmitLOGO
;
174 uint32_t elsXmitRNID
;
175 uint32_t elsXmitFARP
;
176 uint32_t elsXmitFARPR
;
178 uint32_t elsXmitLSRJT
;
180 uint32_t frameRcvBcast
;
181 uint32_t frameRcvMulti
;
182 uint32_t strayXmitCmpl
;
183 uint32_t frameXmitDelay
;
188 uint32_t LinkMultiEvent
;
193 uint32_t fcpRemoteStop
;
195 uint32_t fcpPortBusy
;
197 uint32_t fcpLocalErr
;
200 enum sysfs_mbox_state
{
206 struct lpfc_sysfs_mbox
{
207 enum sysfs_mbox_state state
;
209 struct lpfcMboxq
* mbox
;
215 enum discovery_state
{
216 LPFC_VPORT_UNKNOWN
= 0, /* vport state is unknown */
217 LPFC_VPORT_FAILED
= 1, /* vport has failed */
218 LPFC_LOCAL_CFG_LINK
= 6, /* local NPORT Id configured */
219 LPFC_FLOGI
= 7, /* FLOGI sent to Fabric */
220 LPFC_FDISC
= 8, /* FDISC sent for vport */
221 LPFC_FABRIC_CFG_LINK
= 9, /* Fabric assigned NPORT Id
223 LPFC_NS_REG
= 10, /* Register with NameServer */
224 LPFC_NS_QRY
= 11, /* Query NameServer for NPort ID list */
225 LPFC_BUILD_DISC_LIST
= 12, /* Build ADISC and PLOGI lists for
226 * device authentication / discovery */
227 LPFC_DISC_AUTH
= 13, /* Processing ADISC list */
228 LPFC_VPORT_READY
= 32,
232 LPFC_LINK_UNKNOWN
= 0, /* HBA state is unknown */
233 LPFC_WARM_START
= 1, /* HBA state after selective reset */
234 LPFC_INIT_START
= 2, /* Initial state after board reset */
235 LPFC_INIT_MBX_CMDS
= 3, /* Initialize HBA with mbox commands */
236 LPFC_LINK_DOWN
= 4, /* HBA initialized, link is down */
237 LPFC_LINK_UP
= 5, /* Link is up - issue READ_LA */
238 LPFC_CLEAR_LA
= 6, /* authentication cmplt - issue
245 struct list_head listentry
;
246 struct lpfc_hba
*phba
;
248 #define LPFC_PHYSICAL_PORT 1
249 #define LPFC_NPIV_PORT 2
250 #define LPFC_FABRIC_PORT 3
251 enum discovery_state port_state
;
255 uint32_t fc_flag
; /* FC flags */
256 /* Several of these flags are HBA centric and should be moved to
257 * phba->link_flag (e.g. FC_PTP, FC_PUBLIC_LOOP)
259 #define FC_PT2PT 0x1 /* pt2pt with no fabric */
260 #define FC_PT2PT_PLOGI 0x2 /* pt2pt initiate PLOGI */
261 #define FC_DISC_TMO 0x4 /* Discovery timer running */
262 #define FC_PUBLIC_LOOP 0x8 /* Public loop */
263 #define FC_LBIT 0x10 /* LOGIN bit in loopinit set */
264 #define FC_RSCN_MODE 0x20 /* RSCN cmd rcv'ed */
265 #define FC_NLP_MORE 0x40 /* More node to process in node tbl */
266 #define FC_OFFLINE_MODE 0x80 /* Interface is offline for diag */
267 #define FC_FABRIC 0x100 /* We are fabric attached */
268 #define FC_ESTABLISH_LINK 0x200 /* Reestablish Link */
269 #define FC_RSCN_DISCOVERY 0x400 /* Auth all devices after RSCN */
270 #define FC_SCSI_SCAN_TMO 0x4000 /* scsi scan timer running */
271 #define FC_ABORT_DISCOVERY 0x8000 /* we want to abort discovery */
272 #define FC_NDISC_ACTIVE 0x10000 /* NPort discovery active */
273 #define FC_BYPASSED_MODE 0x20000 /* NPort is in bypassed mode */
274 #define FC_RFF_NOT_SUPPORTED 0x40000 /* RFF_ID was rejected by switch */
275 #define FC_VPORT_NEEDS_REG_VPI 0x80000 /* Needs to have its vpi registered */
276 #define FC_RSCN_DEFERRED 0x100000 /* A deferred RSCN being processed */
278 struct list_head fc_nodes
;
280 /* Keep counters for the number of entries in each list. */
281 uint16_t fc_plogi_cnt
;
282 uint16_t fc_adisc_cnt
;
283 uint16_t fc_reglogin_cnt
;
284 uint16_t fc_prli_cnt
;
285 uint16_t fc_unmap_cnt
;
288 uint16_t fc_unused_cnt
;
289 struct serv_parm fc_sparam
; /* buffer for our service parameters */
291 uint32_t fc_myDID
; /* fibre channel S_ID */
292 uint32_t fc_prevDID
; /* previous fibre channel S_ID */
294 int32_t stopped
; /* HBA has not been restarted since last ERATT */
295 uint8_t fc_linkspeed
; /* Link speed after last READ_LA */
297 uint32_t num_disc_nodes
; /*in addition to hba_state */
299 uint32_t fc_nlp_cnt
; /* outstanding NODELIST requests */
300 uint32_t fc_rscn_id_cnt
; /* count of RSCNs payloads in list */
301 struct lpfc_dmabuf
*fc_rscn_id_list
[FC_MAX_HOLD_RSCN
];
302 struct lpfc_name fc_nodename
; /* fc nodename */
303 struct lpfc_name fc_portname
; /* fc portname */
305 struct lpfc_work_evt disc_timeout_evt
;
307 struct timer_list fc_disctmo
; /* Discovery rescue timer */
308 uint8_t fc_ns_retry
; /* retries for fabric nameserver */
309 uint32_t fc_prli_sent
; /* cntr for outstanding PRLIs */
311 spinlock_t work_port_lock
;
312 uint32_t work_port_events
; /* Timeout to be handled */
313 #define WORKER_DISC_TMO 0x1 /* vport: Discovery timeout */
314 #define WORKER_ELS_TMO 0x2 /* vport: ELS timeout */
315 #define WORKER_FDMI_TMO 0x4 /* vport: FDMI timeout */
317 #define WORKER_MBOX_TMO 0x100 /* hba: MBOX timeout */
318 #define WORKER_HB_TMO 0x200 /* hba: Heart beat timeout */
319 #define WORKER_FABRIC_BLOCK_TMO 0x400 /* hba: fabric block timout */
320 #define WORKER_RAMP_DOWN_QUEUE 0x800 /* hba: Decrease Q depth */
321 #define WORKER_RAMP_UP_QUEUE 0x1000 /* hba: Increase Q depth */
323 struct timer_list fc_fdmitmo
;
324 struct timer_list els_tmofunc
;
329 #define FC_LOADING 0x1 /* HBA in process of loading drvr */
330 #define FC_UNLOADING 0x2 /* HBA in process of unloading drvr */
331 char *vname
; /* Application assigned name */
332 struct fc_vport
*fc_vport
;
334 #ifdef CONFIG_LPFC_DEBUG_FS
335 struct dentry
*debug_disc_trc
;
336 struct dentry
*debug_nodelist
;
337 struct dentry
*vport_debugfs_root
;
338 struct lpfc_debugfs_trc
*disc_trc
;
339 atomic_t disc_trc_cnt
;
344 uint16_t entry_count
; /* Current number of HBQ slots */
345 uint32_t next_hbqPutIdx
; /* Index to next HBQ slot to use */
346 uint32_t hbqPutIdx
; /* HBQ slot to use */
347 uint32_t local_hbqGetIdx
; /* Local copy of Get index from Port */
350 #define LPFC_MAX_HBQS 16
351 /* this matches the possition in the lpfc_hbq_defs array */
352 #define LPFC_ELS_HBQ 0
356 uint32_t sli_rev
; /* SLI2 or SLI3 */
357 uint32_t sli3_options
; /* Mask of enabled SLI3 options */
358 #define LPFC_SLI3_ENABLED 0x01
359 #define LPFC_SLI3_HBQ_ENABLED 0x02
360 #define LPFC_SLI3_NPIV_ENABLED 0x04
361 #define LPFC_SLI3_VPORT_TEARDOWN 0x08
362 uint32_t iocb_cmd_size
;
363 uint32_t iocb_rsp_size
;
365 enum hba_state link_state
;
366 uint32_t link_flag
; /* link state flags */
367 #define LS_LOOPBACK_MODE 0x1 /* NPort is in Loopback mode */
368 /* This flag is set while issuing */
369 /* INIT_LINK mailbox command */
370 #define LS_NPIV_FAB_SUPPORTED 0x2 /* Fabric supports NPIV */
371 #define LS_IGNORE_ERATT 0x3 /* intr handler should ignore ERATT */
373 struct lpfc_sli2_slim
*slim2p
;
374 struct lpfc_dmabuf hbqslimp
;
376 dma_addr_t slim2p_mapping
;
378 uint16_t pci_cfg_value
;
381 #define LPFC_MAX_WORKER_ITERATION 4
383 uint8_t fc_linkspeed
; /* Link speed after last READ_LA */
385 uint32_t fc_eventTag
; /* event tag for link attention */
388 struct timer_list fc_estabtmo
; /* link establishment timer */
389 /* These fields used to be binfo */
390 uint32_t fc_pref_DID
; /* preferred D_ID */
391 uint8_t fc_pref_ALPA
; /* preferred AL_PA */
392 uint32_t fc_edtov
; /* E_D_TOV timer value */
393 uint32_t fc_arbtov
; /* ARB_TOV timer value */
394 uint32_t fc_ratov
; /* R_A_TOV timer value */
395 uint32_t fc_rttov
; /* R_T_TOV timer value */
396 uint32_t fc_altov
; /* AL_TOV timer value */
397 uint32_t fc_crtov
; /* C_R_TOV timer value */
398 uint32_t fc_citov
; /* C_I_TOV timer value */
400 struct serv_parm fc_fabparam
; /* fabric service parameters buffer */
401 uint8_t alpa_map
[128]; /* AL_PA map from READ_LA */
405 uint32_t fc_topology
; /* link topology, from LINK INIT */
407 struct lpfc_stats fc_stat
;
409 struct lpfc_nodelist fc_fcpnodev
; /* nodelist entry for no device */
410 uint32_t nport_event_cnt
; /* timestamp for nlplist entry */
414 uint32_t RandomData
[7];
416 uint32_t cfg_log_verbose
;
417 uint32_t cfg_lun_queue_depth
;
418 uint32_t cfg_nodev_tmo
;
419 uint32_t cfg_devloss_tmo
;
420 uint32_t cfg_hba_queue_depth
;
421 uint32_t cfg_peer_port_login
;
422 uint32_t cfg_vport_restrict_login
;
423 uint32_t cfg_npiv_enable
;
424 uint32_t cfg_fcp_class
;
425 uint32_t cfg_use_adisc
;
427 uint32_t cfg_topology
;
428 uint32_t cfg_scan_down
;
429 uint32_t cfg_link_speed
;
430 uint32_t cfg_cr_delay
;
431 uint32_t cfg_cr_count
;
432 uint32_t cfg_multi_ring_support
;
433 uint32_t cfg_multi_ring_rctl
;
434 uint32_t cfg_multi_ring_type
;
435 uint32_t cfg_fdmi_on
;
436 uint32_t cfg_discovery_threads
;
437 uint32_t cfg_max_luns
;
439 uint32_t cfg_poll_tmo
;
440 uint32_t cfg_use_msi
;
441 uint32_t cfg_sg_seg_cnt
;
442 uint32_t cfg_sg_dma_buf_size
;
443 uint64_t cfg_soft_wwnn
;
444 uint64_t cfg_soft_wwpn
;
446 uint32_t dev_loss_tmo_changed
;
448 lpfc_vpd_t vpd
; /* vital product data */
450 struct pci_dev
*pcidev
;
451 struct list_head work_list
;
452 uint32_t work_ha
; /* Host Attention Bits for WT */
453 uint32_t work_ha_mask
; /* HA Bits owned by WT */
454 uint32_t work_hs
; /* HS stored in case of ERRAT */
455 uint32_t work_status
[2]; /* Extra status from SLIM */
457 wait_queue_head_t
*work_wait
;
458 struct task_struct
*worker_thread
;
460 struct list_head hbq_buffer_list
;
461 uint32_t hbq_count
; /* Count of configured HBQs */
462 struct hbq_s hbqs
[LPFC_MAX_HBQS
]; /* local copy of hbq indicies */
464 unsigned long pci_bar0_map
; /* Physical address for PCI BAR0 */
465 unsigned long pci_bar2_map
; /* Physical address for PCI BAR2 */
466 void __iomem
*slim_memmap_p
; /* Kernel memory mapped address for
468 void __iomem
*ctrl_regs_memmap_p
;/* Kernel memory mapped address for
471 void __iomem
*MBslimaddr
; /* virtual address for mbox cmds */
472 void __iomem
*HAregaddr
; /* virtual address for host attn reg */
473 void __iomem
*CAregaddr
; /* virtual address for chip attn reg */
474 void __iomem
*HSregaddr
; /* virtual address for host status
476 void __iomem
*HCregaddr
; /* virtual address for host ctl reg */
478 struct lpfc_hgp __iomem
*host_gp
; /* Host side get/put pointers */
479 uint32_t __iomem
*hbq_put
; /* Address in SLIM to HBQ put ptrs */
480 uint32_t *hbq_get
; /* Host mem address of HBQ get ptrs */
482 int brd_no
; /* FC board number */
484 char SerialNumber
[32]; /* adapter Serial Number */
485 char OptionROMVersion
[32]; /* adapter BIOS / Fcode version */
486 char ModelDesc
[256]; /* Model Description */
487 char ModelName
[80]; /* Model Name */
488 char ProgramType
[256]; /* Program Type */
489 char Port
[20]; /* Port No */
490 uint8_t vpd_flag
; /* VPD data flag */
492 #define VPD_MODEL_DESC 0x1 /* valid vpd model description */
493 #define VPD_MODEL_NAME 0x2 /* valid vpd model name */
494 #define VPD_PROGRAM_TYPE 0x4 /* valid vpd program type */
495 #define VPD_PORT 0x8 /* valid vpd port data */
496 #define VPD_MASK 0xf /* mask for any vpd data */
498 uint8_t soft_wwn_enable
;
500 struct timer_list fcp_poll_timer
;
505 uint64_t fc4InputRequests
;
506 uint64_t fc4OutputRequests
;
507 uint64_t fc4ControlRequests
;
509 struct lpfc_sysfs_mbox sysfs_mbox
;
512 spinlock_t scsi_buf_list_lock
;
513 struct list_head lpfc_scsi_buf_list
;
514 uint32_t total_scsi_bufs
;
515 struct list_head lpfc_iocb_list
;
516 uint32_t total_iocbq_bufs
;
520 struct pci_pool
*lpfc_scsi_dma_buf_pool
;
521 struct pci_pool
*lpfc_mbuf_pool
;
522 struct pci_pool
*lpfc_hbq_pool
;
523 struct lpfc_dma_pool lpfc_mbuf_safety_pool
;
525 mempool_t
*mbox_mem_pool
;
526 mempool_t
*nlp_mem_pool
;
528 struct fc_host_statistics link_stats
;
530 struct list_head port_list
;
531 struct lpfc_vport
*pport
; /* physical lpfc_vport pointer */
532 uint16_t max_vpi
; /* Maximum virtual nports */
533 #define LPFC_MAX_VPI 100 /* Max number of VPI supported */
534 #define LPFC_MAX_VPORTS (LPFC_MAX_VPI+1)/* Max number of VPorts supported */
535 unsigned long *vpi_bmask
; /* vpi allocation table */
537 /* Data structure used by fabric iocb scheduler */
538 struct list_head fabric_iocb_list
;
539 atomic_t fabric_iocb_count
;
540 struct timer_list fabric_block_timer
;
541 unsigned long bit_flags
;
542 #define FABRIC_COMANDS_BLOCKED 0
543 atomic_t num_rsrc_err
;
544 atomic_t num_cmd_success
;
545 unsigned long last_rsrc_error_time
;
546 unsigned long last_ramp_down_time
;
547 unsigned long last_ramp_up_time
;
548 #ifdef CONFIG_LPFC_DEBUG_FS
549 struct dentry
*hba_debugfs_root
;
550 atomic_t debugfs_vport_count
;
551 struct dentry
*debug_dumpslim
;
552 struct dentry
*debug_slow_ring_trc
;
553 struct lpfc_debugfs_trc
*slow_ring_trc
;
554 atomic_t slow_ring_trc_cnt
;
557 /* Fields used for heart beat. */
558 unsigned long last_completion_time
;
559 struct timer_list hb_tmofunc
;
560 uint8_t hb_outstanding
;
563 static inline struct Scsi_Host
*
564 lpfc_shost_from_vport(struct lpfc_vport
*vport
)
566 return container_of((void *) vport
, struct Scsi_Host
, hostdata
[0]);
570 lpfc_set_loopback_flag(struct lpfc_hba
*phba
)
572 if (phba
->cfg_topology
== FLAGS_LOCAL_LB
)
573 phba
->link_flag
|= LS_LOOPBACK_MODE
;
575 phba
->link_flag
&= ~LS_LOOPBACK_MODE
;
579 lpfc_is_link_up(struct lpfc_hba
*phba
)
581 return phba
->link_state
== LPFC_LINK_UP
||
582 phba
->link_state
== LPFC_CLEAR_LA
||
583 phba
->link_state
== LPFC_HBA_READY
;
586 #define FC_REG_DUMP_EVENT 0x10 /* Register for Dump events */