path: root/drivers/scsi/lpfc/lpfc.h

/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
 * Fibre Channel Host Bus Adapters.                                *
 * Copyright (C) 2017-2020 Broadcom. All Rights Reserved. The term *
 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
 * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
 * EMULEX and SLI are trademarks of Emulex.                        *
 * www.broadcom.com                                                *
 * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
 *                                                                 *
 * This program is free software; you can redistribute it and/or   *
 * 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.                                     *
 *******************************************************************/

#include <scsi/scsi_host.h>
#include <linux/ktime.h>
#include <linux/workqueue.h>

#if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_SCSI_LPFC_DEBUG_FS)
#define CONFIG_SCSI_LPFC_DEBUG_FS
#endif

struct lpfc_sli2_slim;

#define ELX_MODEL_NAME_SIZE	80

#define LPFC_PCI_DEV_LP		0x1
#define LPFC_PCI_DEV_OC		0x2

#define LPFC_SLI_REV2		2
#define LPFC_SLI_REV3		3
#define LPFC_SLI_REV4		4

#define LPFC_MAX_TARGET		4096	/* 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. */
#define LPFC_CMD_PER_LUN	3	/* max outstanding cmds per lun */
#define LPFC_DEFAULT_SG_SEG_CNT 64	/* sg element count per scsi cmnd */
#define LPFC_DEFAULT_MENLO_SG_SEG_CNT 128	/* sg element count per scsi
		cmnd for menlo needs nearly twice as for firmware
		downloads using bsg */

#define LPFC_DEFAULT_XPSGL_SIZE	256
#define LPFC_MAX_SG_TABLESIZE	0xffff
#define LPFC_MIN_SG_SLI4_BUF_SZ	0x800	/* based on LPFC_DEFAULT_SG_SEG_CNT */
#define LPFC_MAX_BG_SLI4_SEG_CNT_DIF 128 /* sg element count for BlockGuard */
#define LPFC_MAX_SG_SEG_CNT_DIF 512	/* sg element count per scsi cmnd  */
#define LPFC_MAX_SG_SEG_CNT	4096	/* sg element count per scsi cmnd */
#define LPFC_MIN_SG_SEG_CNT	32	/* sg element count per scsi cmnd */
#define LPFC_MAX_SGL_SEG_CNT	512	/* SGL element count per scsi cmnd */
#define LPFC_MAX_BPL_SEG_CNT	4096	/* BPL element count per scsi cmnd */
#define LPFC_MAX_NVME_SEG_CNT	256	/* max SGL element cnt per NVME cmnd */

#define LPFC_MAX_SGE_SIZE       0x80000000 /* Maximum data allowed in a SGE */
#define LPFC_IOCB_LIST_CNT	2250	/* list of IOCBs for fast-path usage. */
#define LPFC_Q_RAMP_UP_INTERVAL 120     /* lun q_depth ramp up interval */
#define LPFC_VNAME_LEN		100	/* vport symbolic name length */
#define LPFC_TGTQ_RAMPUP_PCENT	5	/* Target queue rampup in percentage */
#define LPFC_MIN_TGT_QDEPTH	10
#define LPFC_MAX_TGT_QDEPTH	0xFFFF

#define  LPFC_MAX_BUCKET_COUNT 20	/* Maximum no. of buckets for stat data
					   collection. */
/*
 * Following time intervals are used of adjusting SCSI device
 * queue depths when there are driver resource error or Firmware
 * resource error.
 */
/* 1 Second */
#define QUEUE_RAMP_DOWN_INTERVAL	(msecs_to_jiffies(1000 * 1))

/* Number of exchanges reserved for discovery to complete */
#define LPFC_DISC_IOCB_BUFF_COUNT 20

#define LPFC_HB_MBOX_INTERVAL   5	/* Heart beat interval in seconds. */
#define LPFC_HB_MBOX_TIMEOUT    30	/* Heart beat timeout  in seconds. */

/* Error Attention event polling interval */
#define LPFC_ERATT_POLL_INTERVAL	5 /* EATT poll interval in seconds */

/* 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)( \