lpfc.h 14.5 KB
Newer Older
已提交
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.                        *
已提交
6
 * www.emulex.com                                                  *
7
 * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
已提交
8 9
 *                                                                 *
 * This program is free software; you can redistribute it and/or   *
10 11 12 13 14 15 16 17 18 19
 * modify it under the terms of version 2 of the GNU General       *
 * Public License as published by the Free Software Foundation.    *
 * This program is distributed in the hope that it will be useful. *
 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
 * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
 * more details, a copy of which can be found in the file COPYING  *
 * included with this package.                                     *
已提交
20 21
 *******************************************************************/

J
James Smart 已提交
22 23
#include <scsi/scsi_host.h>

已提交
24 25 26
struct lpfc_sli2_slim;


27 28 29 30 31
#define LPFC_MAX_TARGET		256	/* max number of targets supported */
#define LPFC_MAX_DISC_THREADS	64	/* max outstanding discovery els
					   requests */
#define LPFC_MAX_NS_RETRY	3	/* Number of retry attempts to contact
					   the NameServer  before giving up. */
32
#define LPFC_CMD_PER_LUN	3	/* max outstanding cmds per lun */
已提交
33 34
#define LPFC_SG_SEG_CNT		64	/* sg element count per scsi cmnd */
#define LPFC_IOCB_LIST_CNT	2250	/* list of IOCBs for fast-path usage. */
35
#define LPFC_Q_RAMP_UP_INTERVAL 120     /* lun q_depth ramp up interval */
已提交
36 37 38 39 40 41 42 43 44 45 46 47

/* Define macros for 64 bit support */
#define putPaddrLow(addr)    ((uint32_t) (0xffffffff & (u64)(addr)))
#define putPaddrHigh(addr)   ((uint32_t) (0xffffffff & (((u64)(addr))>>32)))
#define getPaddr(high, low)  ((dma_addr_t)( \
			     (( (u64)(high)<<16 ) << 16)|( (u64)(low))))
/* Provide maximum configuration definitions. */
#define LPFC_DRVR_TIMEOUT	16	/* driver iocb timeout value in sec */
#define FC_MAX_ADPTMSG		64

#define MAX_HBAEVT	32

48 49 50 51 52
enum lpfc_polling_flags {
	ENABLE_FCP_RING_POLLING = 0x1,
	DISABLE_FCP_RING_INT    = 0x2
};

已提交
53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122
/* Provide DMA memory definitions the driver uses per port instance. */
struct lpfc_dmabuf {
	struct list_head list;
	void *virt;		/* virtual address ptr */
	dma_addr_t phys;	/* mapped address */
};

struct lpfc_dma_pool {
	struct lpfc_dmabuf   *elements;
	uint32_t    max_count;
	uint32_t    current_count;
};

/* Priority bit.  Set value to exceed low water mark in lpfc_mem. */
#define MEM_PRI		0x100


/****************************************************************************/
/*      Device VPD save area                                                */
/****************************************************************************/
typedef struct lpfc_vpd {
	uint32_t status;	/* vpd status value */
	uint32_t length;	/* number of bytes actually returned */
	struct {
		uint32_t rsvd1;	/* Revision numbers */
		uint32_t biuRev;
		uint32_t smRev;
		uint32_t smFwRev;
		uint32_t endecRev;
		uint16_t rBit;
		uint8_t fcphHigh;
		uint8_t fcphLow;
		uint8_t feaLevelHigh;
		uint8_t feaLevelLow;
		uint32_t postKernRev;
		uint32_t opFwRev;
		uint8_t opFwName[16];
		uint32_t sli1FwRev;
		uint8_t sli1FwName[16];
		uint32_t sli2FwRev;
		uint8_t sli2FwName[16];
	} rev;
} lpfc_vpd_t;

struct lpfc_scsi_buf;


/*
 * lpfc stat counters
 */
struct lpfc_stats {
	/* Statistics for ELS commands */
	uint32_t elsLogiCol;
	uint32_t elsRetryExceeded;
	uint32_t elsXmitRetry;
	uint32_t elsDelayRetry;
	uint32_t elsRcvDrop;
	uint32_t elsRcvFrame;
	uint32_t elsRcvRSCN;
	uint32_t elsRcvRNID;
	uint32_t elsRcvFARP;
	uint32_t elsRcvFARPR;
	uint32_t elsRcvFLOGI;
	uint32_t elsRcvPLOGI;
	uint32_t elsRcvADISC;
	uint32_t elsRcvPDISC;
	uint32_t elsRcvFAN;
	uint32_t elsRcvLOGO;
	uint32_t elsRcvPRLO;
	uint32_t elsRcvPRLI;
123 124 125
	uint32_t elsRcvLIRR;
	uint32_t elsRcvRPS;
	uint32_t elsRcvRPL;
已提交
126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169
	uint32_t elsXmitFLOGI;
	uint32_t elsXmitPLOGI;
	uint32_t elsXmitPRLI;
	uint32_t elsXmitADISC;
	uint32_t elsXmitLOGO;
	uint32_t elsXmitSCR;
	uint32_t elsXmitRNID;
	uint32_t elsXmitFARP;
	uint32_t elsXmitFARPR;
	uint32_t elsXmitACC;
	uint32_t elsXmitLSRJT;

	uint32_t frameRcvBcast;
	uint32_t frameRcvMulti;
	uint32_t strayXmitCmpl;
	uint32_t frameXmitDelay;
	uint32_t xriCmdCmpl;
	uint32_t xriStatErr;
	uint32_t LinkUp;
	uint32_t LinkDown;
	uint32_t LinkMultiEvent;
	uint32_t NoRcvBuf;
	uint32_t fcpCmd;
	uint32_t fcpCmpl;
	uint32_t fcpRspErr;
	uint32_t fcpRemoteStop;
	uint32_t fcpPortRjt;
	uint32_t fcpPortBusy;
	uint32_t fcpError;
	uint32_t fcpLocalErr;
};

enum sysfs_mbox_state {
	SMBOX_IDLE,
	SMBOX_WRITING,
	SMBOX_READING
};

struct lpfc_sysfs_mbox {
	enum sysfs_mbox_state state;
	size_t                offset;
	struct lpfcMboxq *    mbox;
};

J
James Smart 已提交
170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278
struct lpfc_hba;

enum discovery_state {
	LPFC_STATE_UNKNOWN   =  0,    /* HBA state is unknown */
	LPFC_LOCAL_CFG_LINK  =  6,    /* local NPORT Id configured */
	LPFC_FLOGI           =  7,    /* FLOGI sent to Fabric */
	LPFC_FABRIC_CFG_LINK =  8,    /* Fabric assigned NPORT Id
				       * configured */
	LPFC_NS_REG          =  9,    /* Register with NameServer */
	LPFC_NS_QRY          =  10,   /* Query NameServer for NPort ID list */
	LPFC_BUILD_DISC_LIST =  11,   /* Build ADISC and PLOGI lists for
				       * device authentication / discovery */
	LPFC_DISC_AUTH       =  12,   /* Processing ADISC list */
	LPFC_VPORT_READY     =  32,
};

enum hba_state {
	LPFC_LINK_UNKNOWN    =   0,   /* HBA state is unknown */
	LPFC_WARM_START      =   1,   /* HBA state after selective reset */
	LPFC_INIT_START      =   2,   /* Initial state after board reset */
	LPFC_INIT_MBX_CMDS   =   3,   /* Initialize HBA with mbox commands */
	LPFC_LINK_DOWN       =   4,   /* HBA initialized, link is down */
	LPFC_LINK_UP         =   5,   /* Link is up  - issue READ_LA */
	LPFC_CLEAR_LA        =  13,   /* authentication cmplt - issue
				       * CLEAR_LA */
	LPFC_HBA_ERROR       =  -1
};

struct lpfc_vport {
	struct list_head listentry;
	struct lpfc_hba *phba;
	uint8_t port_type;
#define LPFC_PHYSICAL_PORT 1
#define LPFC_NPIV_PORT  2
#define LPFC_FABRIC_PORT 3
	enum discovery_state port_state;


	uint32_t fc_flag;	/* FC flags */
/* Several of these flags are HBA centric and should be moved to
 * phba->link_flag (e.g. FC_PTP, FC_PUBLIC_LOOP)
 */
#define FC_PT2PT                0x1	/* pt2pt with no fabric */
#define FC_PT2PT_PLOGI          0x2	/* pt2pt initiate PLOGI */
#define FC_DISC_TMO             0x4	/* Discovery timer running */
#define FC_PUBLIC_LOOP          0x8	/* Public loop */
#define FC_LBIT                 0x10	/* LOGIN bit in loopinit set */
#define FC_RSCN_MODE            0x20	/* RSCN cmd rcv'ed */
#define FC_NLP_MORE             0x40	/* More node to process in node tbl */
#define FC_OFFLINE_MODE         0x80	/* Interface is offline for diag */
#define FC_FABRIC               0x100	/* We are fabric attached */
#define FC_ESTABLISH_LINK       0x200	/* Reestablish Link */
#define FC_RSCN_DISCOVERY       0x400	/* Authenticate all devices after RSCN*/
#define FC_SCSI_SCAN_TMO        0x4000	/* scsi scan timer running */
#define FC_ABORT_DISCOVERY      0x8000	/* we want to abort discovery */
#define FC_NDISC_ACTIVE         0x10000	/* NPort discovery active */
#define FC_BYPASSED_MODE        0x20000	/* NPort is in bypassed mode */

	struct list_head fc_nodes;

	/* Keep counters for the number of entries in each list. */
	uint16_t fc_plogi_cnt;
	uint16_t fc_adisc_cnt;
	uint16_t fc_reglogin_cnt;
	uint16_t fc_prli_cnt;
	uint16_t fc_unmap_cnt;
	uint16_t fc_map_cnt;
	uint16_t fc_npr_cnt;
	uint16_t fc_unused_cnt;
	struct serv_parm fc_sparam;	/* buffer for our service parameters */

	uint32_t fc_myDID;	/* fibre channel S_ID */
	uint32_t fc_prevDID;	/* previous fibre channel S_ID */

	int32_t stopped;   /* HBA has not been restarted since last ERATT */
	uint8_t fc_linkspeed;	/* Link speed after last READ_LA */

	uint32_t num_disc_nodes;	/*in addition to hba_state */

	uint32_t fc_nlp_cnt;	/* outstanding NODELIST requests */
	uint32_t fc_rscn_id_cnt;	/* count of RSCNs payloads in list */
	struct lpfc_dmabuf *fc_rscn_id_list[FC_MAX_HOLD_RSCN];
	struct lpfc_name fc_nodename;	/* fc nodename */
	struct lpfc_name fc_portname;	/* fc portname */

	struct lpfc_work_evt disc_timeout_evt;

	struct timer_list fc_disctmo;	/* Discovery rescue timer */
	uint8_t fc_ns_retry;	/* retries for fabric nameserver */
	uint32_t fc_prli_sent;	/* cntr for outstanding PRLIs */

	spinlock_t work_port_lock;
	uint32_t work_port_events; /* Timeout to be handled  */
#define WORKER_DISC_TMO                0x1	/* Discovery timeout */
#define WORKER_ELS_TMO                 0x2	/* ELS timeout */
#define WORKER_MBOX_TMO                0x4	/* MBOX timeout */
#define WORKER_FDMI_TMO                0x8	/* FDMI timeout */

	struct timer_list fc_fdmitmo;
	struct timer_list els_tmofunc;

	int unreg_vpi_cmpl;

	uint8_t load_flag;
#define FC_LOADING		0x1	/* HBA in process of loading drvr */
#define FC_UNLOADING		0x2	/* HBA in process of unloading drvr */

};

已提交
279 280
struct lpfc_hba {
	struct lpfc_sli sli;
J
James Smart 已提交
281 282 283 284 285 286 287 288 289 290

	enum hba_state link_state;
	uint32_t link_flag;	/* link state flags */
#define LS_LOOPBACK_MODE        0x40000	/* NPort is in Loopback mode */
					/* This flag is set while issuing */
					/* INIT_LINK mailbox command */
#define LS_IGNORE_ERATT         0x80000	/* intr handler should ignore ERATT */

	uint32_t pgpOffset; /* PGP offset within host memory */

已提交
291
	struct lpfc_sli2_slim *slim2p;
J
James Smart 已提交
292 293
	struct lpfc_dmabuf hbqslimp;

已提交
294
	dma_addr_t slim2p_mapping;
J
James Smart 已提交
295 296


已提交
297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328
	uint16_t pci_cfg_value;


	uint8_t fc_linkspeed;	/* Link speed after last READ_LA */

	uint32_t fc_eventTag;	/* event tag for link attention */


	struct timer_list fc_estabtmo;	/* link establishment timer */
	/* These fields used to be binfo */
	uint32_t fc_pref_DID;	/* preferred D_ID */
	uint8_t fc_pref_ALPA;	/* preferred AL_PA */
	uint32_t fc_edtov;	/* E_D_TOV timer value */
	uint32_t fc_arbtov;	/* ARB_TOV timer value */
	uint32_t fc_ratov;	/* R_A_TOV timer value */
	uint32_t fc_rttov;	/* R_T_TOV timer value */
	uint32_t fc_altov;	/* AL_TOV timer value */
	uint32_t fc_crtov;	/* C_R_TOV timer value */
	uint32_t fc_citov;	/* C_I_TOV timer value */

	struct serv_parm fc_fabparam;	/* fabric service parameters buffer */
	uint8_t alpa_map[128];	/* AL_PA map from READ_LA */

	uint32_t lmt;

	uint32_t fc_topology;	/* link topology, from LINK INIT */

	struct lpfc_stats fc_stat;

	struct lpfc_nodelist fc_fcpnodev; /* nodelist entry for no device */
	uint32_t nport_event_cnt;	/* timestamp for nlplist entry */

J
James Smart 已提交
329 330
	uint8_t  wwnn[8];
	uint8_t  wwpn[8];
已提交
331 332 333 334 335
	uint32_t RandomData[7];

	uint32_t cfg_log_verbose;
	uint32_t cfg_lun_queue_depth;
	uint32_t cfg_nodev_tmo;
336
	uint32_t cfg_devloss_tmo;
已提交
337 338 339 340 341 342 343 344 345
	uint32_t cfg_hba_queue_depth;
	uint32_t cfg_fcp_class;
	uint32_t cfg_use_adisc;
	uint32_t cfg_ack0;
	uint32_t cfg_topology;
	uint32_t cfg_scan_down;
	uint32_t cfg_link_speed;
	uint32_t cfg_cr_delay;
	uint32_t cfg_cr_count;
346
	uint32_t cfg_multi_ring_support;
347 348
	uint32_t cfg_multi_ring_rctl;
	uint32_t cfg_multi_ring_type;
已提交
349 350 351
	uint32_t cfg_fdmi_on;
	uint32_t cfg_discovery_threads;
	uint32_t cfg_max_luns;
352 353
	uint32_t cfg_poll;
	uint32_t cfg_poll_tmo;
354
	uint32_t cfg_use_msi;
已提交
355 356
	uint32_t cfg_sg_seg_cnt;
	uint32_t cfg_sg_dma_buf_size;
357
	uint64_t cfg_soft_wwnn;
358
	uint64_t cfg_soft_wwpn;
已提交
359

360 361
	uint32_t dev_loss_tmo_changed;

已提交
362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403
	lpfc_vpd_t vpd;		/* vital product data */

	struct pci_dev *pcidev;
	struct list_head      work_list;
	uint32_t              work_ha;      /* Host Attention Bits for WT */
	uint32_t              work_ha_mask; /* HA Bits owned by WT        */
	uint32_t              work_hs;      /* HS stored in case of ERRAT */
	uint32_t              work_status[2]; /* Extra status from SLIM */

	wait_queue_head_t    *work_wait;
	struct task_struct   *worker_thread;

	unsigned long pci_bar0_map;     /* Physical address for PCI BAR0 */
	unsigned long pci_bar2_map;     /* Physical address for PCI BAR2 */
	void __iomem *slim_memmap_p;	/* Kernel memory mapped address for
					   PCI BAR0 */
	void __iomem *ctrl_regs_memmap_p;/* Kernel memory mapped address for
					    PCI BAR2 */

	void __iomem *MBslimaddr;	/* virtual address for mbox cmds */
	void __iomem *HAregaddr;	/* virtual address for host attn reg */
	void __iomem *CAregaddr;	/* virtual address for chip attn reg */
	void __iomem *HSregaddr;	/* virtual address for host status
					   reg */
	void __iomem *HCregaddr;	/* virtual address for host ctl reg */

	int brd_no;			/* FC board number */

	char SerialNumber[32];		/* adapter Serial Number */
	char OptionROMVersion[32];	/* adapter BIOS / Fcode version */
	char ModelDesc[256];		/* Model Description */
	char ModelName[80];		/* Model Name */
	char ProgramType[256];		/* Program Type */
	char Port[20];			/* Port No */
	uint8_t vpd_flag;               /* VPD data flag */

#define VPD_MODEL_DESC      0x1         /* valid vpd model description */
#define VPD_MODEL_NAME      0x2         /* valid vpd model name */
#define VPD_PROGRAM_TYPE    0x4         /* valid vpd program type */
#define VPD_PORT            0x8         /* valid vpd port data */
#define VPD_MASK            0xf         /* mask for any vpd data */

404
	uint8_t soft_wwn_enable;
405

406 407
	struct timer_list fcp_poll_timer;

已提交
408 409 410 411 412 413 414 415 416 417
	/*
	 * stat  counters
	 */
	uint64_t fc4InputRequests;
	uint64_t fc4OutputRequests;
	uint64_t fc4ControlRequests;

	struct lpfc_sysfs_mbox sysfs_mbox;

	/* fastpath list. */
418
	spinlock_t scsi_buf_list_lock;
已提交
419 420 421 422
	struct list_head lpfc_scsi_buf_list;
	uint32_t total_scsi_bufs;
	struct list_head lpfc_iocb_list;
	uint32_t total_iocbq_bufs;
J
James Smart 已提交
423
	spinlock_t hbalock;
已提交
424 425 426 427 428 429 430 431

	/* pci_mem_pools */
	struct pci_pool *lpfc_scsi_dma_buf_pool;
	struct pci_pool *lpfc_mbuf_pool;
	struct lpfc_dma_pool lpfc_mbuf_safety_pool;

	mempool_t *mbox_mem_pool;
	mempool_t *nlp_mem_pool;
432 433

	struct fc_host_statistics link_stats;
J
James Smart 已提交
434 435
	struct list_head port_list;
	struct lpfc_vport *pport; /* physical lpfc_vport pointer */
已提交
436 437
};

J
James Smart 已提交
438 439 440 441 442 443
static inline struct Scsi_Host *
lpfc_shost_from_vport(struct lpfc_vport *vport)
{
	return container_of((void *) vport, struct Scsi_Host, hostdata[0]);
}

444
static inline void
J
James Smart 已提交
445 446
lpfc_set_loopback_flag(struct lpfc_hba *phba)
{
447
	if (phba->cfg_topology == FLAGS_LOCAL_LB)
J
James Smart 已提交
448
		phba->link_flag |= LS_LOOPBACK_MODE;
449
	else
J
James Smart 已提交
450 451 452 453 454 455 456 457
		phba->link_flag &= ~LS_LOOPBACK_MODE;
}

static inline int
lpfc_is_link_up(struct lpfc_hba *phba)
{
	return  phba->link_state == LPFC_LINK_UP ||
		phba->link_state == LPFC_CLEAR_LA;
458
}
已提交
459

J
James Smart 已提交
460

461 462

#define FC_REG_DUMP_EVENT	0x10	/* Register for Dump events */
J
James Smart 已提交
463