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lpfc.h
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1 /*******************************************************************
2  * This file is part of the Emulex Linux Device Driver for *
3  * Fibre Channel Host Bus Adapters. *
4  * Copyright (C) 2004-2012 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 ELX_MODEL_NAME_SIZE 80
31 
32 #define LPFC_PCI_DEV_LP 0x1
33 #define LPFC_PCI_DEV_OC 0x2
34 
35 #define LPFC_SLI_REV2 2
36 #define LPFC_SLI_REV3 3
37 #define LPFC_SLI_REV4 4
38 
39 #define LPFC_MAX_TARGET 4096 /* max number of targets supported */
40 #define LPFC_MAX_DISC_THREADS 64 /* max outstanding discovery els
41  requests */
42 #define LPFC_MAX_NS_RETRY 3 /* Number of retry attempts to contact
43  the NameServer before giving up. */
44 #define LPFC_CMD_PER_LUN 3 /* max outstanding cmds per lun */
45 #define LPFC_DEFAULT_SG_SEG_CNT 64 /* sg element count per scsi cmnd */
46 #define LPFC_DEFAULT_MENLO_SG_SEG_CNT 128 /* sg element count per scsi
47  cmnd for menlo needs nearly twice as for firmware
48  downloads using bsg */
49 #define LPFC_DEFAULT_PROT_SG_SEG_CNT 4096 /* sg protection elements count */
50 #define LPFC_MAX_SG_SEG_CNT 4096 /* sg element count per scsi cmnd */
51 #define LPFC_MAX_SGE_SIZE 0x80000000 /* Maximum data allowed in a SGE */
52 #define LPFC_MAX_PROT_SG_SEG_CNT 4096 /* prot sg element count per scsi cmd*/
53 #define LPFC_IOCB_LIST_CNT 2250 /* list of IOCBs for fast-path usage. */
54 #define LPFC_Q_RAMP_UP_INTERVAL 120 /* lun q_depth ramp up interval */
55 #define LPFC_VNAME_LEN 100 /* vport symbolic name length */
56 #define LPFC_TGTQ_INTERVAL 40000 /* Min amount of time between tgt
57  queue depth change in millisecs */
58 #define LPFC_TGTQ_RAMPUP_PCENT 5 /* Target queue rampup in percentage */
59 #define LPFC_MIN_TGT_QDEPTH 10
60 #define LPFC_MAX_TGT_QDEPTH 0xFFFF
61 
62 #define LPFC_MAX_BUCKET_COUNT 20 /* Maximum no. of buckets for stat data
63  collection. */
64 /*
65  * Following time intervals are used of adjusting SCSI device
66  * queue depths when there are driver resource error or Firmware
67  * resource error.
68  */
69 #define QUEUE_RAMP_DOWN_INTERVAL (1 * HZ) /* 1 Second */
70 #define QUEUE_RAMP_UP_INTERVAL (300 * HZ) /* 5 minutes */
71 
72 /* Number of exchanges reserved for discovery to complete */
73 #define LPFC_DISC_IOCB_BUFF_COUNT 20
74 
75 #define LPFC_HB_MBOX_INTERVAL 5 /* Heart beat interval in seconds. */
76 #define LPFC_HB_MBOX_TIMEOUT 30 /* Heart beat timeout in seconds. */
77 
78 #define LPFC_LOOK_AHEAD_OFF 0 /* Look ahead logic is turned off */
79 
80 /* Error Attention event polling interval */
81 #define LPFC_ERATT_POLL_INTERVAL 5 /* EATT poll interval in seconds */
82 
83 /* Define macros for 64 bit support */
84 #define putPaddrLow(addr) ((uint32_t) (0xffffffff & (u64)(addr)))
85 #define putPaddrHigh(addr) ((uint32_t) (0xffffffff & (((u64)(addr))>>32)))
86 #define getPaddr(high, low) ((dma_addr_t)( \
87  (( (u64)(high)<<16 ) << 16)|( (u64)(low))))
88 /* Provide maximum configuration definitions. */
89 #define LPFC_DRVR_TIMEOUT 16 /* driver iocb timeout value in sec */
90 #define FC_MAX_ADPTMSG 64
91 
92 #define MAX_HBAEVT 32
93 
94 /* Number of MSI-X vectors the driver uses */
95 #define LPFC_MSIX_VECTORS 2
96 
97 /* lpfc wait event data ready flag */
98 #define LPFC_DATA_READY (1<<0)
99 
100 /* queue dump line buffer size */
101 #define LPFC_LBUF_SZ 128
102 
103 /* mailbox system shutdown options */
104 #define LPFC_MBX_NO_WAIT 0
105 #define LPFC_MBX_WAIT 1
106 
107 enum lpfc_polling_flags {
108  ENABLE_FCP_RING_POLLING = 0x1,
109  DISABLE_FCP_RING_INT = 0x2
110 };
111 
112 /* Provide DMA memory definitions the driver uses per port instance. */
113 struct lpfc_dmabuf {
114  struct list_head list;
115  void *virt; /* virtual address ptr */
116  dma_addr_t phys; /* mapped address */
117  uint32_t buffer_tag; /* used for tagged queue ring */
118 };
119 
120 struct lpfc_dma_pool {
121  struct lpfc_dmabuf *elements;
122  uint32_t max_count;
123  uint32_t current_count;
124 };
125 
126 struct hbq_dmabuf {
127  struct lpfc_dmabuf hbuf;
128  struct lpfc_dmabuf dbuf;
129  uint32_t size;
130  uint32_t tag;
131  struct lpfc_cq_event cq_event;
132  unsigned long time_stamp;
133 };
134 
135 /* Priority bit. Set value to exceed low water mark in lpfc_mem. */
136 #define MEM_PRI 0x100
137 
138 
139 /****************************************************************************/
140 /* Device VPD save area */
141 /****************************************************************************/
142 typedef struct lpfc_vpd {
143  uint32_t status; /* vpd status value */
144  uint32_t length; /* number of bytes actually returned */
145  struct {
146  uint32_t rsvd1; /* Revision numbers */
147  uint32_t biuRev;
148  uint32_t smRev;
149  uint32_t smFwRev;
150  uint32_t endecRev;
151  uint16_t rBit;
152  uint8_t fcphHigh;
153  uint8_t fcphLow;
154  uint8_t feaLevelHigh;
155  uint8_t feaLevelLow;
156  uint32_t postKernRev;
157  uint32_t opFwRev;
158  uint8_t opFwName[16];
159  uint32_t sli1FwRev;
160  uint8_t sli1FwName[16];
161  uint32_t sli2FwRev;
162  uint8_t sli2FwName[16];
163  } rev;
164  struct {
165 #ifdef __BIG_ENDIAN_BITFIELD
166  uint32_t rsvd3 :19; /* Reserved */
167  uint32_t cdss : 1; /* Configure Data Security SLI */
168  uint32_t rsvd2 : 3; /* Reserved */
169  uint32_t cbg : 1; /* Configure BlockGuard */
170  uint32_t cmv : 1; /* Configure Max VPIs */
171  uint32_t ccrp : 1; /* Config Command Ring Polling */
172  uint32_t csah : 1; /* Configure Synchronous Abort Handling */
173  uint32_t chbs : 1; /* Cofigure Host Backing store */
174  uint32_t cinb : 1; /* Enable Interrupt Notification Block */
175  uint32_t cerbm : 1; /* Configure Enhanced Receive Buf Mgmt */
176  uint32_t cmx : 1; /* Configure Max XRIs */
177  uint32_t cmr : 1; /* Configure Max RPIs */
178 #else /* __LITTLE_ENDIAN */
179  uint32_t cmr : 1; /* Configure Max RPIs */
180  uint32_t cmx : 1; /* Configure Max XRIs */
181  uint32_t cerbm : 1; /* Configure Enhanced Receive Buf Mgmt */
182  uint32_t cinb : 1; /* Enable Interrupt Notification Block */
183  uint32_t chbs : 1; /* Cofigure Host Backing store */
184  uint32_t csah : 1; /* Configure Synchronous Abort Handling */
185  uint32_t ccrp : 1; /* Config Command Ring Polling */
186  uint32_t cmv : 1; /* Configure Max VPIs */
187  uint32_t cbg : 1; /* Configure BlockGuard */
188  uint32_t rsvd2 : 3; /* Reserved */
189  uint32_t cdss : 1; /* Configure Data Security SLI */
190  uint32_t rsvd3 :19; /* Reserved */
191 #endif
192  } sli3Feat;
193 } lpfc_vpd_t;
194 
195 struct lpfc_scsi_buf;
196 
197 
198 /*
199  * lpfc stat counters
200  */
201 struct lpfc_stats {
202  /* Statistics for ELS commands */
203  uint32_t elsLogiCol;
204  uint32_t elsRetryExceeded;
205  uint32_t elsXmitRetry;
206  uint32_t elsDelayRetry;
207  uint32_t elsRcvDrop;
208  uint32_t elsRcvFrame;
209  uint32_t elsRcvRSCN;
210  uint32_t elsRcvRNID;
211  uint32_t elsRcvFARP;
212  uint32_t elsRcvFARPR;
213  uint32_t elsRcvFLOGI;
214  uint32_t elsRcvPLOGI;
215  uint32_t elsRcvADISC;
216  uint32_t elsRcvPDISC;
217  uint32_t elsRcvFAN;
218  uint32_t elsRcvLOGO;
219  uint32_t elsRcvPRLO;
220  uint32_t elsRcvPRLI;
221  uint32_t elsRcvLIRR;
222  uint32_t elsRcvRLS;
223  uint32_t elsRcvRPS;
224  uint32_t elsRcvRPL;
225  uint32_t elsRcvRRQ;
226  uint32_t elsRcvRTV;
227  uint32_t elsRcvECHO;
228  uint32_t elsXmitFLOGI;
229  uint32_t elsXmitFDISC;
230  uint32_t elsXmitPLOGI;
231  uint32_t elsXmitPRLI;
232  uint32_t elsXmitADISC;
233  uint32_t elsXmitLOGO;
234  uint32_t elsXmitSCR;
235  uint32_t elsXmitRNID;
236  uint32_t elsXmitFARP;
237  uint32_t elsXmitFARPR;
238  uint32_t elsXmitACC;
239  uint32_t elsXmitLSRJT;
240 
241  uint32_t frameRcvBcast;
242  uint32_t frameRcvMulti;
243  uint32_t strayXmitCmpl;
244  uint32_t frameXmitDelay;
245  uint32_t xriCmdCmpl;
246  uint32_t xriStatErr;
247  uint32_t LinkUp;
248  uint32_t LinkDown;
249  uint32_t LinkMultiEvent;
250  uint32_t NoRcvBuf;
251  uint32_t fcpCmd;
252  uint32_t fcpCmpl;
253  uint32_t fcpRspErr;
254  uint32_t fcpRemoteStop;
255  uint32_t fcpPortRjt;
256  uint32_t fcpPortBusy;
257  uint32_t fcpError;
258  uint32_t fcpLocalErr;
259 };
260 
261 struct lpfc_hba;
262 
263 
264 enum discovery_state {
265  LPFC_VPORT_UNKNOWN = 0, /* vport state is unknown */
266  LPFC_VPORT_FAILED = 1, /* vport has failed */
267  LPFC_LOCAL_CFG_LINK = 6, /* local NPORT Id configured */
268  LPFC_FLOGI = 7, /* FLOGI sent to Fabric */
269  LPFC_FDISC = 8, /* FDISC sent for vport */
270  LPFC_FABRIC_CFG_LINK = 9, /* Fabric assigned NPORT Id
271  * configured */
272  LPFC_NS_REG = 10, /* Register with NameServer */
273  LPFC_NS_QRY = 11, /* Query NameServer for NPort ID list */
274  LPFC_BUILD_DISC_LIST = 12, /* Build ADISC and PLOGI lists for
275  * device authentication / discovery */
276  LPFC_DISC_AUTH = 13, /* Processing ADISC list */
277  LPFC_VPORT_READY = 32,
278 };
279 
280 enum hba_state {
281  LPFC_LINK_UNKNOWN = 0, /* HBA state is unknown */
282  LPFC_WARM_START = 1, /* HBA state after selective reset */
283  LPFC_INIT_START = 2, /* Initial state after board reset */
284  LPFC_INIT_MBX_CMDS = 3, /* Initialize HBA with mbox commands */
285  LPFC_LINK_DOWN = 4, /* HBA initialized, link is down */
286  LPFC_LINK_UP = 5, /* Link is up - issue READ_LA */
287  LPFC_CLEAR_LA = 6, /* authentication cmplt - issue
288  * CLEAR_LA */
289  LPFC_HBA_READY = 32,
290  LPFC_HBA_ERROR = -1
291 };
292 
293 struct lpfc_vport {
294  struct lpfc_hba *phba;
295  struct list_head listentry;
296  uint8_t port_type;
297 #define LPFC_PHYSICAL_PORT 1
298 #define LPFC_NPIV_PORT 2
299 #define LPFC_FABRIC_PORT 3
300  enum discovery_state port_state;
301 
302  uint16_t vpi;
303  uint16_t vfi;
304  uint8_t vpi_state;
305 #define LPFC_VPI_REGISTERED 0x1
306 
307  uint32_t fc_flag; /* FC flags */
308 /* Several of these flags are HBA centric and should be moved to
309  * phba->link_flag (e.g. FC_PTP, FC_PUBLIC_LOOP)
310  */
311 #define FC_PT2PT 0x1 /* pt2pt with no fabric */
312 #define FC_PT2PT_PLOGI 0x2 /* pt2pt initiate PLOGI */
313 #define FC_DISC_TMO 0x4 /* Discovery timer running */
314 #define FC_PUBLIC_LOOP 0x8 /* Public loop */
315 #define FC_LBIT 0x10 /* LOGIN bit in loopinit set */
316 #define FC_RSCN_MODE 0x20 /* RSCN cmd rcv'ed */
317 #define FC_NLP_MORE 0x40 /* More node to process in node tbl */
318 #define FC_OFFLINE_MODE 0x80 /* Interface is offline for diag */
319 #define FC_FABRIC 0x100 /* We are fabric attached */
320 #define FC_VPORT_LOGO_RCVD 0x200 /* LOGO received on vport */
321 #define FC_RSCN_DISCOVERY 0x400 /* Auth all devices after RSCN */
322 #define FC_LOGO_RCVD_DID_CHNG 0x800 /* FDISC on phys port detect DID chng*/
323 #define FC_SCSI_SCAN_TMO 0x4000 /* scsi scan timer running */
324 #define FC_ABORT_DISCOVERY 0x8000 /* we want to abort discovery */
325 #define FC_NDISC_ACTIVE 0x10000 /* NPort discovery active */
326 #define FC_BYPASSED_MODE 0x20000 /* NPort is in bypassed mode */
327 #define FC_VPORT_NEEDS_REG_VPI 0x80000 /* Needs to have its vpi registered */
328 #define FC_RSCN_DEFERRED 0x100000 /* A deferred RSCN being processed */
329 #define FC_VPORT_NEEDS_INIT_VPI 0x200000 /* Need to INIT_VPI before FDISC */
330 #define FC_VPORT_CVL_RCVD 0x400000 /* VLink failed due to CVL */
331 #define FC_VFI_REGISTERED 0x800000 /* VFI is registered */
332 #define FC_FDISC_COMPLETED 0x1000000/* FDISC completed */
333 #define FC_DISC_DELAYED 0x2000000/* Delay NPort discovery */
334 
335  uint32_t ct_flags;
336 #define FC_CT_RFF_ID 0x1 /* RFF_ID accepted by switch */
337 #define FC_CT_RNN_ID 0x2 /* RNN_ID accepted by switch */
338 #define FC_CT_RSNN_NN 0x4 /* RSNN_NN accepted by switch */
339 #define FC_CT_RSPN_ID 0x8 /* RSPN_ID accepted by switch */
340 #define FC_CT_RFT_ID 0x10 /* RFT_ID accepted by switch */
341 
342  struct list_head fc_nodes;
343 
344  /* Keep counters for the number of entries in each list. */
345  uint16_t fc_plogi_cnt;
346  uint16_t fc_adisc_cnt;
347  uint16_t fc_reglogin_cnt;
348  uint16_t fc_prli_cnt;
349  uint16_t fc_unmap_cnt;
350  uint16_t fc_map_cnt;
351  uint16_t fc_npr_cnt;
352  uint16_t fc_unused_cnt;
353  struct serv_parm fc_sparam; /* buffer for our service parameters */
354 
355  uint32_t fc_myDID; /* fibre channel S_ID */
356  uint32_t fc_prevDID; /* previous fibre channel S_ID */
357  struct lpfc_name fabric_portname;
358  struct lpfc_name fabric_nodename;
359 
360  int32_t stopped; /* HBA has not been restarted since last ERATT */
361  uint8_t fc_linkspeed; /* Link speed after last READ_LA */
362 
363  uint32_t num_disc_nodes; /*in addition to hba_state */
364 
365  uint32_t fc_nlp_cnt; /* outstanding NODELIST requests */
366  uint32_t fc_rscn_id_cnt; /* count of RSCNs payloads in list */
367  uint32_t fc_rscn_flush; /* flag use of fc_rscn_id_list */
368  struct lpfc_dmabuf *fc_rscn_id_list[FC_MAX_HOLD_RSCN];
369  struct lpfc_name fc_nodename; /* fc nodename */
370  struct lpfc_name fc_portname; /* fc portname */
371 
372  struct lpfc_work_evt disc_timeout_evt;
373 
374  struct timer_list fc_disctmo; /* Discovery rescue timer */
375  uint8_t fc_ns_retry; /* retries for fabric nameserver */
376  uint32_t fc_prli_sent; /* cntr for outstanding PRLIs */
377 
378  spinlock_t work_port_lock;
379  uint32_t work_port_events; /* Timeout to be handled */
380 #define WORKER_DISC_TMO 0x1 /* vport: Discovery timeout */
381 #define WORKER_ELS_TMO 0x2 /* vport: ELS timeout */
382 #define WORKER_FDMI_TMO 0x4 /* vport: FDMI timeout */
383 #define WORKER_DELAYED_DISC_TMO 0x8 /* vport: delayed discovery */
384 
385 #define WORKER_MBOX_TMO 0x100 /* hba: MBOX timeout */
386 #define WORKER_HB_TMO 0x200 /* hba: Heart beat timeout */
387 #define WORKER_FABRIC_BLOCK_TMO 0x400 /* hba: fabric block timeout */
388 #define WORKER_RAMP_DOWN_QUEUE 0x800 /* hba: Decrease Q depth */
389 #define WORKER_RAMP_UP_QUEUE 0x1000 /* hba: Increase Q depth */
390 #define WORKER_SERVICE_TXQ 0x2000 /* hba: IOCBs on the txq */
391 
392  struct timer_list fc_fdmitmo;
393  struct timer_list els_tmofunc;
394  struct timer_list delayed_disc_tmo;
395 
396  int unreg_vpi_cmpl;
397 
398  uint8_t load_flag;
399 #define FC_LOADING 0x1 /* HBA in process of loading drvr */
400 #define FC_UNLOADING 0x2 /* HBA in process of unloading drvr */
401  /* Vport Config Parameters */
402  uint32_t cfg_scan_down;
403  uint32_t cfg_lun_queue_depth;
404  uint32_t cfg_nodev_tmo;
405  uint32_t cfg_devloss_tmo;
406  uint32_t cfg_restrict_login;
407  uint32_t cfg_peer_port_login;
408  uint32_t cfg_fcp_class;
409  uint32_t cfg_use_adisc;
410  uint32_t cfg_fdmi_on;
411  uint32_t cfg_discovery_threads;
412  uint32_t cfg_log_verbose;
413  uint32_t cfg_max_luns;
414  uint32_t cfg_enable_da_id;
415  uint32_t cfg_max_scsicmpl_time;
416  uint32_t cfg_tgt_queue_depth;
417 
418  uint32_t dev_loss_tmo_changed;
419 
420  struct fc_vport *fc_vport;
421 
422 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
423  struct dentry *debug_disc_trc;
424  struct dentry *debug_nodelist;
425  struct dentry *vport_debugfs_root;
426  struct lpfc_debugfs_trc *disc_trc;
427  atomic_t disc_trc_cnt;
428 #endif
429  uint8_t stat_data_enabled;
430  uint8_t stat_data_blocked;
431  struct list_head rcv_buffer_list;
432  unsigned long rcv_buffer_time_stamp;
433  uint32_t vport_flag;
434 #define STATIC_VPORT 1
435 };
436 
437 struct hbq_s {
438  uint16_t entry_count; /* Current number of HBQ slots */
439  uint16_t buffer_count; /* Current number of buffers posted */
440  uint32_t next_hbqPutIdx; /* Index to next HBQ slot to use */
441  uint32_t hbqPutIdx; /* HBQ slot to use */
442  uint32_t local_hbqGetIdx; /* Local copy of Get index from Port */
443  void *hbq_virt; /* Virtual ptr to this hbq */
444  struct list_head hbq_buffer_list; /* buffers assigned to this HBQ */
445  /* Callback for HBQ buffer allocation */
446  struct hbq_dmabuf *(*hbq_alloc_buffer) (struct lpfc_hba *);
447  /* Callback for HBQ buffer free */
448  void (*hbq_free_buffer) (struct lpfc_hba *,
449  struct hbq_dmabuf *);
450 };
451 
452 #define LPFC_MAX_HBQS 4
453 /* this matches the position in the lpfc_hbq_defs array */
454 #define LPFC_ELS_HBQ 0
455 #define LPFC_EXTRA_HBQ 1
456 
457 enum hba_temp_state {
458  HBA_NORMAL_TEMP,
459  HBA_OVER_TEMP
460 };
461 
462 enum intr_type_t {
463  NONE = 0,
464  INTx,
465  MSI,
466  MSIX,
467 };
468 
469 struct unsol_rcv_ct_ctx {
470  uint32_t ctxt_id;
471  uint32_t SID;
472  uint32_t flags;
473 #define UNSOL_VALID 0x00000001
474  uint16_t oxid;
475  uint16_t rxid;
476 };
477 
478 #define LPFC_USER_LINK_SPEED_AUTO 0 /* auto select (default)*/
479 #define LPFC_USER_LINK_SPEED_1G 1 /* 1 Gigabaud */
480 #define LPFC_USER_LINK_SPEED_2G 2 /* 2 Gigabaud */
481 #define LPFC_USER_LINK_SPEED_4G 4 /* 4 Gigabaud */
482 #define LPFC_USER_LINK_SPEED_8G 8 /* 8 Gigabaud */
483 #define LPFC_USER_LINK_SPEED_10G 10 /* 10 Gigabaud */
484 #define LPFC_USER_LINK_SPEED_16G 16 /* 16 Gigabaud */
485 #define LPFC_USER_LINK_SPEED_MAX LPFC_USER_LINK_SPEED_16G
486 #define LPFC_USER_LINK_SPEED_BITMAP ((1 << LPFC_USER_LINK_SPEED_16G) | \
487  (1 << LPFC_USER_LINK_SPEED_10G) | \
488  (1 << LPFC_USER_LINK_SPEED_8G) | \
489  (1 << LPFC_USER_LINK_SPEED_4G) | \
490  (1 << LPFC_USER_LINK_SPEED_2G) | \
491  (1 << LPFC_USER_LINK_SPEED_1G) | \
492  (1 << LPFC_USER_LINK_SPEED_AUTO))
493 #define LPFC_LINK_SPEED_STRING "0, 1, 2, 4, 8, 10, 16"
494 
495 enum nemb_type {
496  nemb_mse = 1,
497  nemb_hbd
498 };
499 
500 enum mbox_type {
501  mbox_rd = 1,
502  mbox_wr
503 };
504 
505 enum dma_type {
506  dma_mbox = 1,
507  dma_ebuf
508 };
509 
510 enum sta_type {
511  sta_pre_addr = 1,
512  sta_pos_addr
513 };
514 
515 struct lpfc_mbox_ext_buf_ctx {
516  uint32_t state;
517 #define LPFC_BSG_MBOX_IDLE 0
518 #define LPFC_BSG_MBOX_HOST 1
519 #define LPFC_BSG_MBOX_PORT 2
520 #define LPFC_BSG_MBOX_DONE 3
521 #define LPFC_BSG_MBOX_ABTS 4
522  enum nemb_type nembType;
523  enum mbox_type mboxType;
524  uint32_t numBuf;
525  uint32_t mbxTag;
526  uint32_t seqNum;
527  struct lpfc_dmabuf *mbx_dmabuf;
528  struct list_head ext_dmabuf_list;
529 };
530 
531 struct lpfc_hba {
532  /* SCSI interface function jump table entries */
533  int (*lpfc_new_scsi_buf)
534  (struct lpfc_vport *, int);
535  struct lpfc_scsi_buf * (*lpfc_get_scsi_buf)
536  (struct lpfc_hba *, struct lpfc_nodelist *);
537  int (*lpfc_scsi_prep_dma_buf)
538  (struct lpfc_hba *, struct lpfc_scsi_buf *);
539  void (*lpfc_scsi_unprep_dma_buf)
540  (struct lpfc_hba *, struct lpfc_scsi_buf *);
541  void (*lpfc_release_scsi_buf)
542  (struct lpfc_hba *, struct lpfc_scsi_buf *);
543  void (*lpfc_rampdown_queue_depth)
544  (struct lpfc_hba *);
545  void (*lpfc_scsi_prep_cmnd)
546  (struct lpfc_vport *, struct lpfc_scsi_buf *,
547  struct lpfc_nodelist *);
548 
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  IOCB_t * (*lpfc_get_iocb_from_iocbq)
557  (struct lpfc_iocbq *);
558  void (*lpfc_scsi_cmd_iocb_cmpl)
559  (struct lpfc_hba *, struct lpfc_iocbq *, struct lpfc_iocbq *);
560 
561  /* MBOX interface function jump table entries */
562  int (*lpfc_sli_issue_mbox)
563  (struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t);
564 
565  /* Slow-path IOCB process function jump table entries */
566  void (*lpfc_sli_handle_slow_ring_event)
567  (struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
568  uint32_t mask);
569 
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  int (*lpfc_bg_scsi_prep_dma_buf)
589  (struct lpfc_hba *, struct lpfc_scsi_buf *);
590  /* Add new entries here */
591 
592  /* SLI4 specific HBA data structure */
593  struct lpfc_sli4_hba sli4_hba;
594 
595  struct lpfc_sli sli;
596  uint8_t pci_dev_grp; /* lpfc PCI dev group: 0x0, 0x1, 0x2,... */
597  uint32_t sli_rev; /* SLI2, SLI3, or SLI4 */
598  uint32_t sli3_options; /* Mask of enabled SLI3 options */
599 #define LPFC_SLI3_HBQ_ENABLED 0x01
600 #define LPFC_SLI3_NPIV_ENABLED 0x02
601 #define LPFC_SLI3_VPORT_TEARDOWN 0x04
602 #define LPFC_SLI3_CRP_ENABLED 0x08
603 #define LPFC_SLI3_BG_ENABLED 0x20
604 #define LPFC_SLI3_DSS_ENABLED 0x40
605 #define LPFC_SLI4_PERFH_ENABLED 0x80
606 #define LPFC_SLI4_PHWQ_ENABLED 0x100
607  uint32_t iocb_cmd_size;
608  uint32_t iocb_rsp_size;
609 
610  enum hba_state link_state;
611  uint32_t link_flag; /* link state flags */
612 #define LS_LOOPBACK_MODE 0x1 /* NPort is in Loopback mode */
613  /* This flag is set while issuing */
614  /* INIT_LINK mailbox command */
615 #define LS_NPIV_FAB_SUPPORTED 0x2 /* Fabric supports NPIV */
616 #define LS_IGNORE_ERATT 0x4 /* intr handler should ignore ERATT */
617 
618  uint32_t hba_flag; /* hba generic flags */
619 #define HBA_ERATT_HANDLED 0x1 /* This flag is set when eratt handled */
620 #define DEFER_ERATT 0x2 /* Deferred error attention in progress */
621 #define HBA_FCOE_MODE 0x4 /* HBA function in FCoE Mode */
622 #define HBA_SP_QUEUE_EVT 0x8 /* Slow-path qevt posted to worker thread*/
623 #define HBA_POST_RECEIVE_BUFFER 0x10 /* Rcv buffers need to be posted */
624 #define FCP_XRI_ABORT_EVENT 0x20
625 #define ELS_XRI_ABORT_EVENT 0x40
626 #define ASYNC_EVENT 0x80
627 #define LINK_DISABLED 0x100 /* Link disabled by user */
628 #define FCF_TS_INPROG 0x200 /* FCF table scan in progress */
629 #define FCF_RR_INPROG 0x400 /* FCF roundrobin flogi in progress */
630 #define HBA_FIP_SUPPORT 0x800 /* FIP support in HBA */
631 #define HBA_AER_ENABLED 0x1000 /* AER enabled with HBA */
632 #define HBA_DEVLOSS_TMO 0x2000 /* HBA in devloss timeout */
633 #define HBA_RRQ_ACTIVE 0x4000 /* process the rrq active list */
634 #define HBA_FCP_IOQ_FLUSH 0x8000 /* FCP I/O queues being flushed */
635  uint32_t fcp_ring_in_use; /* When polling test if intr-hndlr active*/
636  struct lpfc_dmabuf slim2p;
637 
638  MAILBOX_t *mbox;
639  uint32_t *mbox_ext;
640  struct lpfc_mbox_ext_buf_ctx mbox_ext_buf_ctx;
641  uint32_t ha_copy;
642  struct _PCB *pcb;
643  struct _IOCB *IOCBs;
644 
645  struct lpfc_dmabuf hbqslimp;
646 
647  uint16_t pci_cfg_value;
648 
649  uint8_t fc_linkspeed; /* Link speed after last READ_LA */
650 
651  uint32_t fc_eventTag; /* event tag for link attention */
652  uint32_t link_events;
653 
654  /* These fields used to be binfo */
655  uint32_t fc_pref_DID; /* preferred D_ID */
656  uint8_t fc_pref_ALPA; /* preferred AL_PA */
657  uint32_t fc_edtovResol; /* E_D_TOV timer resolution */
658  uint32_t fc_edtov; /* E_D_TOV timer value */
659  uint32_t fc_arbtov; /* ARB_TOV timer value */
660  uint32_t fc_ratov; /* R_A_TOV timer value */
661  uint32_t fc_rttov; /* R_T_TOV timer value */
662  uint32_t fc_altov; /* AL_TOV timer value */
663  uint32_t fc_crtov; /* C_R_TOV timer value */
664  uint32_t fc_citov; /* C_I_TOV timer value */
665 
666  struct serv_parm fc_fabparam; /* fabric service parameters buffer */
667  uint8_t alpa_map[128]; /* AL_PA map from READ_LA */
668 
669  uint32_t lmt;
670 
671  uint32_t fc_topology; /* link topology, from LINK INIT */
672 
673  struct lpfc_stats fc_stat;
674 
675  struct lpfc_nodelist fc_fcpnodev; /* nodelist entry for no device */
676  uint32_t nport_event_cnt; /* timestamp for nlplist entry */
677 
678  uint8_t wwnn[8];
679  uint8_t wwpn[8];
680  uint32_t RandomData[7];
681 
682  /* HBA Config Parameters */
683  uint32_t cfg_ack0;
684  uint32_t cfg_enable_npiv;
685  uint32_t cfg_enable_rrq;
686  uint32_t cfg_topology;
687  uint32_t cfg_link_speed;
688 #define LPFC_FCF_FOV 1 /* Fast fcf failover */
689 #define LPFC_FCF_PRIORITY 2 /* Priority fcf failover */
690  uint32_t cfg_fcf_failover_policy;
691  uint32_t cfg_fcp_io_sched;
692  uint32_t cfg_cr_delay;
693  uint32_t cfg_cr_count;
694  uint32_t cfg_multi_ring_support;
695  uint32_t cfg_multi_ring_rctl;
696  uint32_t cfg_multi_ring_type;
697  uint32_t cfg_poll;
698  uint32_t cfg_poll_tmo;
699  uint32_t cfg_use_msi;
700  uint32_t cfg_fcp_imax;
701  uint32_t cfg_fcp_wq_count;
702  uint32_t cfg_fcp_eq_count;
703  uint32_t cfg_fcp_io_channel;
704  uint32_t cfg_sg_seg_cnt;
705  uint32_t cfg_prot_sg_seg_cnt;
706  uint32_t cfg_sg_dma_buf_size;
707  uint64_t cfg_soft_wwnn;
708  uint64_t cfg_soft_wwpn;
709  uint32_t cfg_hba_queue_depth;
710  uint32_t cfg_enable_hba_reset;
711  uint32_t cfg_enable_hba_heartbeat;
712  uint32_t cfg_enable_bg;
713  uint32_t cfg_hostmem_hgp;
714  uint32_t cfg_log_verbose;
715  uint32_t cfg_aer_support;
716  uint32_t cfg_sriov_nr_virtfn;
717  uint32_t cfg_iocb_cnt;
718  uint32_t cfg_suppress_link_up;
719 #define LPFC_INITIALIZE_LINK 0 /* do normal init_link mbox */
720 #define LPFC_DELAY_INIT_LINK 1 /* layered driver hold off */
721 #define LPFC_DELAY_INIT_LINK_INDEFINITELY 2 /* wait, manual intervention */
722  uint32_t cfg_enable_dss;
723  lpfc_vpd_t vpd; /* vital product data */
724 
725  struct pci_dev *pcidev;
726  struct list_head work_list;
727  uint32_t work_ha; /* Host Attention Bits for WT */
728  uint32_t work_ha_mask; /* HA Bits owned by WT */
729  uint32_t work_hs; /* HS stored in case of ERRAT */
730  uint32_t work_status[2]; /* Extra status from SLIM */
731 
732  wait_queue_head_t work_waitq;
733  struct task_struct *worker_thread;
734  unsigned long data_flags;
735 
736  uint32_t hbq_in_use; /* HBQs in use flag */
737  struct list_head rb_pend_list; /* Received buffers to be processed */
738  uint32_t hbq_count; /* Count of configured HBQs */
739  struct hbq_s hbqs[LPFC_MAX_HBQS]; /* local copy of hbq indicies */
740 
741  atomic_t fcp_qidx; /* next work queue to post work to */
742 
743  unsigned long pci_bar0_map; /* Physical address for PCI BAR0 */
744  unsigned long pci_bar1_map; /* Physical address for PCI BAR1 */
745  unsigned long pci_bar2_map; /* Physical address for PCI BAR2 */
746  void __iomem *slim_memmap_p; /* Kernel memory mapped address for
747  PCI BAR0 */
748  void __iomem *ctrl_regs_memmap_p;/* Kernel memory mapped address for
749  PCI BAR2 */
750 
751  void __iomem *MBslimaddr; /* virtual address for mbox cmds */
752  void __iomem *HAregaddr; /* virtual address for host attn reg */
753  void __iomem *CAregaddr; /* virtual address for chip attn reg */
754  void __iomem *HSregaddr; /* virtual address for host status
755  reg */
756  void __iomem *HCregaddr; /* virtual address for host ctl reg */
757 
758  struct lpfc_hgp __iomem *host_gp; /* Host side get/put pointers */
759  struct lpfc_pgp *port_gp;
760  uint32_t __iomem *hbq_put; /* Address in SLIM to HBQ put ptrs */
761  uint32_t *hbq_get; /* Host mem address of HBQ get ptrs */
762 
763  int brd_no; /* FC board number */
764  char SerialNumber[32]; /* adapter Serial Number */
765  char OptionROMVersion[32]; /* adapter BIOS / Fcode version */
766  char ModelDesc[256]; /* Model Description */
767  char ModelName[80]; /* Model Name */
768  char ProgramType[256]; /* Program Type */
769  char Port[20]; /* Port No */
770  uint8_t vpd_flag; /* VPD data flag */
771 
772 #define VPD_MODEL_DESC 0x1 /* valid vpd model description */
773 #define VPD_MODEL_NAME 0x2 /* valid vpd model name */
774 #define VPD_PROGRAM_TYPE 0x4 /* valid vpd program type */
775 #define VPD_PORT 0x8 /* valid vpd port data */
776 #define VPD_MASK 0xf /* mask for any vpd data */
777 
778  uint8_t soft_wwn_enable;
779 
780  struct timer_list fcp_poll_timer;
781  struct timer_list eratt_poll;
782 
783  /*
784  * stat counters
785  */
786  uint64_t fc4InputRequests;
787  uint64_t fc4OutputRequests;
788  uint64_t fc4ControlRequests;
789  uint64_t bg_guard_err_cnt;
790  uint64_t bg_apptag_err_cnt;
791  uint64_t bg_reftag_err_cnt;
792 
793  /* fastpath list. */
794  spinlock_t scsi_buf_list_lock;
795  struct list_head lpfc_scsi_buf_list;
796  uint32_t total_scsi_bufs;
797  struct list_head lpfc_iocb_list;
798  uint32_t total_iocbq_bufs;
799  struct list_head active_rrq_list;
800  spinlock_t hbalock;
801 
802  /* pci_mem_pools */
803  struct pci_pool *lpfc_scsi_dma_buf_pool;
804  struct pci_pool *lpfc_mbuf_pool;
805  struct pci_pool *lpfc_hrb_pool; /* header receive buffer pool */
806  struct pci_pool *lpfc_drb_pool; /* data receive buffer pool */
807  struct pci_pool *lpfc_hbq_pool; /* SLI3 hbq buffer pool */
808  struct lpfc_dma_pool lpfc_mbuf_safety_pool;
809 
810  mempool_t *mbox_mem_pool;
811  mempool_t *nlp_mem_pool;
812  mempool_t *rrq_pool;
813 
814  struct fc_host_statistics link_stats;
815  enum intr_type_t intr_type;
816  uint32_t intr_mode;
817 #define LPFC_INTR_ERROR 0xFFFFFFFF
818  struct msix_entry msix_entries[LPFC_MSIX_VECTORS];
819 
820  struct list_head port_list;
821  struct lpfc_vport *pport; /* physical lpfc_vport pointer */
822  uint16_t max_vpi; /* Maximum virtual nports */
823 #define LPFC_MAX_VPI 0xFFFF /* Max number of VPI supported */
824  uint16_t max_vports; /*
825  * For IOV HBAs max_vpi can change
826  * after a reset. max_vports is max
827  * number of vports present. This can
828  * be greater than max_vpi.
829  */
830  uint16_t vpi_base;
831  uint16_t vfi_base;
832  unsigned long *vpi_bmask; /* vpi allocation table */
833  uint16_t *vpi_ids;
834  uint16_t vpi_count;
835  struct list_head lpfc_vpi_blk_list;
836 
837  /* Data structure used by fabric iocb scheduler */
838  struct list_head fabric_iocb_list;
839  atomic_t fabric_iocb_count;
840  struct timer_list fabric_block_timer;
841  unsigned long bit_flags;
842 #define FABRIC_COMANDS_BLOCKED 0
843  atomic_t num_rsrc_err;
844  atomic_t num_cmd_success;
845  unsigned long last_rsrc_error_time;
846  unsigned long last_ramp_down_time;
847  unsigned long last_ramp_up_time;
848 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
849  struct dentry *hba_debugfs_root;
850  atomic_t debugfs_vport_count;
851  struct dentry *debug_hbqinfo;
852  struct dentry *debug_dumpHostSlim;
853  struct dentry *debug_dumpHBASlim;
854  struct dentry *debug_dumpData; /* BlockGuard BPL */
855  struct dentry *debug_dumpDif; /* BlockGuard BPL */
856  struct dentry *debug_InjErrLBA; /* LBA to inject errors at */
857  struct dentry *debug_InjErrNPortID; /* NPortID to inject errors at */
858  struct dentry *debug_InjErrWWPN; /* WWPN to inject errors at */
859  struct dentry *debug_writeGuard; /* inject write guard_tag errors */
860  struct dentry *debug_writeApp; /* inject write app_tag errors */
861  struct dentry *debug_writeRef; /* inject write ref_tag errors */
862  struct dentry *debug_readGuard; /* inject read guard_tag errors */
863  struct dentry *debug_readApp; /* inject read app_tag errors */
864  struct dentry *debug_readRef; /* inject read ref_tag errors */
865 
866  /* T10 DIF error injection */
867  uint32_t lpfc_injerr_wgrd_cnt;
868  uint32_t lpfc_injerr_wapp_cnt;
869  uint32_t lpfc_injerr_wref_cnt;
870  uint32_t lpfc_injerr_rgrd_cnt;
871  uint32_t lpfc_injerr_rapp_cnt;
872  uint32_t lpfc_injerr_rref_cnt;
873  uint32_t lpfc_injerr_nportid;
874  struct lpfc_name lpfc_injerr_wwpn;
875  sector_t lpfc_injerr_lba;
876 #define LPFC_INJERR_LBA_OFF (sector_t)(-1)
877 
878  struct dentry *debug_slow_ring_trc;
879  struct lpfc_debugfs_trc *slow_ring_trc;
880  atomic_t slow_ring_trc_cnt;
881  /* iDiag debugfs sub-directory */
882  struct dentry *idiag_root;
883  struct dentry *idiag_pci_cfg;
884  struct dentry *idiag_bar_acc;
885  struct dentry *idiag_que_info;
886  struct dentry *idiag_que_acc;
887  struct dentry *idiag_drb_acc;
888  struct dentry *idiag_ctl_acc;
889  struct dentry *idiag_mbx_acc;
890  struct dentry *idiag_ext_acc;
891 #endif
892 
893  /* Used for deferred freeing of ELS data buffers */
894  struct list_head elsbuf;
895  int elsbuf_cnt;
896  int elsbuf_prev_cnt;
897 
898  uint8_t temp_sensor_support;
899  /* Fields used for heart beat. */
900  unsigned long last_completion_time;
901  unsigned long skipped_hb;
902  struct timer_list hb_tmofunc;
903  uint8_t hb_outstanding;
904  struct timer_list rrq_tmr;
905  enum hba_temp_state over_temp_state;
906  /* ndlp reference management */
907  spinlock_t ndlp_lock;
908  /*
909  * Following bit will be set for all buffer tags which are not
910  * associated with any HBQ.
911  */
912 #define QUE_BUFTAG_BIT (1<<31)
913  uint32_t buffer_tag_count;
914  int wait_4_mlo_maint_flg;
915  wait_queue_head_t wait_4_mlo_m_q;
916  /* data structure used for latency data collection */
917 #define LPFC_NO_BUCKET 0
918 #define LPFC_LINEAR_BUCKET 1
919 #define LPFC_POWER2_BUCKET 2
920  uint8_t bucket_type;
921  uint32_t bucket_base;
922  uint32_t bucket_step;
923 
924 /* Maximum number of events that can be outstanding at any time*/
925 #define LPFC_MAX_EVT_COUNT 512
926  atomic_t fast_event_count;
927  uint32_t fcoe_eventtag;
928  uint32_t fcoe_eventtag_at_fcf_scan;
929  uint32_t fcoe_cvl_eventtag;
930  uint32_t fcoe_cvl_eventtag_attn;
931  struct lpfc_fcf fcf;
932  uint8_t fc_map[3];
933  uint8_t valid_vlan;
934  uint16_t vlan_id;
935  struct list_head fcf_conn_rec_list;
936 
937  spinlock_t ct_ev_lock; /* synchronize access to ct_ev_waiters */
938  struct list_head ct_ev_waiters;
939  struct unsol_rcv_ct_ctx ct_ctx[64];
940  uint32_t ctx_idx;
941 
942  uint8_t menlo_flag; /* menlo generic flags */
943 #define HBA_MENLO_SUPPORT 0x1 /* HBA supports menlo commands */
944  uint32_t iocb_cnt;
945  uint32_t iocb_max;
946  atomic_t sdev_cnt;
947  uint8_t fips_spec_rev;
948  uint8_t fips_level;
949 };
950 
951 static inline struct Scsi_Host *
952 lpfc_shost_from_vport(struct lpfc_vport *vport)
953 {
954  return container_of((void *) vport, struct Scsi_Host, hostdata[0]);
955 }
956 
957 static inline void
958 lpfc_set_loopback_flag(struct lpfc_hba *phba)
959 {
960  if (phba->cfg_topology == FLAGS_LOCAL_LB)
961  phba->link_flag |= LS_LOOPBACK_MODE;
962  else
963  phba->link_flag &= ~LS_LOOPBACK_MODE;
964 }
965 
966 static inline int
967 lpfc_is_link_up(struct lpfc_hba *phba)
968 {
969  return phba->link_state == LPFC_LINK_UP ||
970  phba->link_state == LPFC_CLEAR_LA ||
971  phba->link_state == LPFC_HBA_READY;
972 }
973 
974 static inline void
975 lpfc_worker_wake_up(struct lpfc_hba *phba)
976 {
977  /* Set the lpfc data pending flag */
978  set_bit(LPFC_DATA_READY, &phba->data_flags);
979 
980  /* Wake up worker thread */
981  wake_up(&phba->work_waitq);
982  return;
983 }
984 
985 static inline int
986 lpfc_readl(void __iomem *addr, uint32_t *data)
987 {
988  uint32_t temp;
989  temp = readl(addr);
990  if (temp == 0xffffffff)
991  return -EIO;
992  *data = temp;
993  return 0;
994 }
995 
996 static inline int
997 lpfc_sli_read_hs(struct lpfc_hba *phba)
998 {
999  /*
1000  * There was a link/board error. Read the status register to retrieve
1001  * the error event and process it.
1002  */
1003  phba->sli.slistat.err_attn_event++;
1004 
1005  /* Save status info and check for unplug error */
1006  if (lpfc_readl(phba->HSregaddr, &phba->work_hs) ||
1007  lpfc_readl(phba->MBslimaddr + 0xa8, &phba->work_status[0]) ||
1008  lpfc_readl(phba->MBslimaddr + 0xac, &phba->work_status[1])) {
1009  return -EIO;
1010  }
1011 
1012  /* Clear chip Host Attention error bit */
1013  writel(HA_ERATT, phba->HAregaddr);
1014  readl(phba->HAregaddr); /* flush */
1015  phba->pport->stopped = 1;
1016 
1017  return 0;
1018 }
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