text: /*******************************************************************
   * This file is part of the Emulex Linux Device Driver for         *
   * Fibre Channel Host Bus Adapters.                                *
   * Copyright (C) 2007-2009 Emulex.  All rights reserved.           *
   * EMULEX and SLI are trademarks of Emulex.                        *
   * www.emulex.com                                                  *
   *                                                                 *
   * 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 <linux/blkdev.h>
  #include <linux/delay.h>
  #include <linux/dma-mapping.h>
  #include <linux/idr.h>
  #include <linux/interrupt.h>
  #include <linux/kthread.h>
  #include <linux/slab.h>
  #include <linux/pci.h>
  #include <linux/spinlock.h>
  #include <linux/ctype.h>
  
  #include <scsi/scsi.h>
  #include <scsi/scsi_device.h>
  #include <scsi/scsi_host.h>
  #include <scsi/scsi_transport_fc.h>
  
  #include "lpfc_hw4.h"
  #include "lpfc_hw.h"
  #include "lpfc_sli.h"
  #include "lpfc_sli4.h"
  #include "lpfc_nl.h"
  #include "lpfc_disc.h"
  #include "lpfc_scsi.h"
  #include "lpfc.h"
  #include "lpfc_logmsg.h"
  #include "lpfc_crtn.h"
  #include "lpfc_vport.h"
  #include "lpfc_version.h"
  #include "lpfc_compat.h"
  #include "lpfc_debugfs.h"
  
  #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
  /*
   * debugfs interface
   *
   * To access this interface the user should:
   * # mount -t debugfs none /sys/kernel/debug
   *
   * The lpfc debugfs directory hierarchy is:
   * lpfc/lpfcX/vportY
   * where X is the lpfc hba unique_id
   * where Y is the vport VPI on that hba
   *
   * Debugging services available per vport:
   * discovery_trace
   * This is an ACSII readable file that contains a trace of the last
   * lpfc_debugfs_max_disc_trc events that happened on a specific vport.
   * See lpfc_debugfs.h for different categories of  discovery events.
   * To enable the discovery trace, the following module parameters must be set:
   * lpfc_debugfs_enable=1         Turns on lpfc debugfs filesystem support
   * lpfc_debugfs_max_disc_trc=X   Where X is the event trace depth for
   *                               EACH vport. X MUST also be a power of 2.
   * lpfc_debugfs_mask_disc_trc=Y  Where Y is an event mask as defined in
   *                               lpfc_debugfs.h .
   *
   * slow_ring_trace
   * This is an ACSII readable file that contains a trace of the last
   * lpfc_debugfs_max_slow_ring_trc events that happened on a specific HBA.
   * To enable the slow ring trace, the following module parameters must be set:
   * lpfc_debugfs_enable=1         Turns on lpfc debugfs filesystem support
   * lpfc_debugfs_max_slow_ring_trc=X   Where X is the event trace depth for
   *                               the HBA. X MUST also be a power of 2.
   */
  static int lpfc_debugfs_enable = 1;
  module_param(lpfc_debugfs_enable, int, 0);
  MODULE_PARM_DESC(lpfc_debugfs_enable, "Enable debugfs services");
  
  /* This MUST be a power of 2 */
  static int lpfc_debugfs_max_disc_trc;
  module_param(lpfc_debugfs_max_disc_trc, int, 0);
  MODULE_PARM_DESC(lpfc_debugfs_max_disc_trc,
  	"Set debugfs discovery trace depth");
  
  /* This MUST be a power of 2 */
  static int lpfc_debugfs_max_slow_ring_trc;
  module_param(lpfc_debugfs_max_slow_ring_trc, int, 0);
  MODULE_PARM_DESC(lpfc_debugfs_max_slow_ring_trc,
  	"Set debugfs slow ring trace depth");
  
  static int lpfc_debugfs_mask_disc_trc;
  module_param(lpfc_debugfs_mask_disc_trc, int, 0);
  MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc,
  	"Set debugfs discovery trace mask");
  
  #include <linux/debugfs.h>
  
  /* size of output line, for discovery_trace and slow_ring_trace */
  #define LPFC_DEBUG_TRC_ENTRY_SIZE 100
  
  /* nodelist output buffer size */
  #define LPFC_NODELIST_SIZE 8192
  #define LPFC_NODELIST_ENTRY_SIZE 120
  
  /* dumpHBASlim output buffer size */
  #define LPFC_DUMPHBASLIM_SIZE 4096
  
  /* dumpHostSlim output buffer size */
  #define LPFC_DUMPHOSTSLIM_SIZE 4096
  
  /* hbqinfo output buffer size */
  #define LPFC_HBQINFO_SIZE 8192
  
  struct lpfc_debug {
  	char *buffer;
  	int  len;
  };
  
  static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0);
  static unsigned long lpfc_debugfs_start_time = 0L;
  
  /**
   * lpfc_debugfs_disc_trc_data - Dump discovery logging to a buffer
   * @vport: The vport to gather the log info from.
   * @buf: The buffer to dump log into.
   * @size: The maximum amount of data to process.
   *
   * Description:
   * This routine gathers the lpfc discovery debugfs data from the @vport and
   * dumps it to @buf up to @size number of bytes. It will start at the next entry
   * in the log and process the log until the end of the buffer. Then it will
   * gather from the beginning of the log and process until the current entry.
   *
   * Notes:
   * Discovery logging will be disabled while while this routine dumps the log.
   *
   * Return Value:
   * This routine returns the amount of bytes that were dumped into @buf and will
   * not exceed @size.
   **/
  static int
  lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size)
  {
  	int i, index, len, enable;
  	uint32_t ms;
  	struct lpfc_debugfs_trc *dtp;
  	char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE];
  
  	enable = lpfc_debugfs_enable;
  	lpfc_debugfs_enable = 0;
  
  	len = 0;
  	index = (atomic_read(&vport->disc_trc_cnt) + 1) &
  		(lpfc_debugfs_max_disc_trc - 1);
  	for (i = index; i < lpfc_debugfs_max_disc_trc; i++) {
  		dtp = vport->disc_trc + i;
  		if (!dtp->fmt)
  			continue;
  		ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
  		snprintf(buffer,
  			LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
  			dtp->seq_cnt, ms, dtp->fmt);
  		len +=  snprintf(buf+len, size-len, buffer,
  			dtp->data1, dtp->data2, dtp->data3);
  	}
  	for (i = 0; i < index; i++) {
  		dtp = vport->disc_trc + i;
  		if (!dtp->fmt)
  			continue;
  		ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
  		snprintf(buffer,
  			LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
  			dtp->seq_cnt, ms, dtp->fmt);
  		len +=  snprintf(buf+len, size-len, buffer,
  			dtp->data1, dtp->data2, dtp->data3);
  	}
  
  	lpfc_debugfs_enable = enable;
  	return len;
  }
  
  /**
   * lpfc_debugfs_slow_ring_trc_data - Dump slow ring logging to a buffer
   * @phba: The HBA to gather the log info from.
   * @buf: The buffer to dump log into.
   * @size: The maximum amount of data to process.
   *
   * Description:
   * This routine gathers the lpfc slow ring debugfs data from the @phba and
   * dumps it to @buf up to @size number of bytes. It will start at the next entry
   * in the log and process the log until the end of the buffer. Then it will
   * gather from the beginning of the log and process until the current entry.
   *
   * Notes:
   * Slow ring logging will be disabled while while this routine dumps the log.
   *
   * Return Value:
   * This routine returns the amount of bytes that were dumped into @buf and will
   * not exceed @size.
   **/
  static int
  lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size)
  {
  	int i, index, len, enable;
  	uint32_t ms;
  	struct lpfc_debugfs_trc *dtp;
  	char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE];
  
  
  	enable = lpfc_debugfs_enable;
  	lpfc_debugfs_enable = 0;
  
  	len = 0;
  	index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) &
  		(lpfc_debugfs_max_slow_ring_trc - 1);
  	for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) {
  		dtp = phba->slow_ring_trc + i;
  		if (!dtp->fmt)
  			continue;
  		ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
  		snprintf(buffer,
  			LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
  			dtp->seq_cnt, ms, dtp->fmt);
  		len +=  snprintf(buf+len, size-len, buffer,
  			dtp->data1, dtp->data2, dtp->data3);
  	}
  	for (i = 0; i < index; i++) {
  		dtp = phba->slow_ring_trc + i;
  		if (!dtp->fmt)
  			continue;
  		ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
  		snprintf(buffer,
  			LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
  			dtp->seq_cnt, ms, dtp->fmt);
  		len +=  snprintf(buf+len, size-len, buffer,
  			dtp->data1, dtp->data2, dtp->data3);
  	}
  
  	lpfc_debugfs_enable = enable;
  	return len;
  }
  
  static int lpfc_debugfs_last_hbq = -1;
  
  /**
   * lpfc_debugfs_hbqinfo_data - Dump host buffer queue info to a buffer
   * @phba: The HBA to gather host buffer info from.
   * @buf: The buffer to dump log into.
   * @size: The maximum amount of data to process.
   *
   * Description:
   * This routine dumps the host buffer queue info from the @phba to @buf up to
   * @size number of bytes. A header that describes the current hbq state will be
   * dumped to @buf first and then info on each hbq entry will be dumped to @buf
   * until @size bytes have been dumped or all the hbq info has been dumped.
   *
   * Notes:
   * This routine will rotate through each configured HBQ each time called.
   *
   * Return Value:
   * This routine returns the amount of bytes that were dumped into @buf and will
   * not exceed @size.
   **/
  static int
  lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size)
  {
  	int len = 0;
  	int cnt, i, j, found, posted, low;
  	uint32_t phys, raw_index, getidx;
  	struct lpfc_hbq_init *hip;
  	struct hbq_s *hbqs;
  	struct lpfc_hbq_entry *hbqe;
  	struct lpfc_dmabuf *d_buf;
  	struct hbq_dmabuf *hbq_buf;
  
  	if (phba->sli_rev != 3)
  		return 0;
  	cnt = LPFC_HBQINFO_SIZE;
  	spin_lock_irq(&phba->hbalock);
  
  	/* toggle between multiple hbqs, if any */
  	i = lpfc_sli_hbq_count();
  	if (i > 1) {
  		 lpfc_debugfs_last_hbq++;
  		 if (lpfc_debugfs_last_hbq >= i)
  			lpfc_debugfs_last_hbq = 0;
  	}
  	else
  		lpfc_debugfs_last_hbq = 0;
  
  	i = lpfc_debugfs_last_hbq;
  
  	len +=  snprintf(buf+len, size-len, "HBQ %d Info\n", i);
  
  	hbqs =  &phba->hbqs[i];
  	posted = 0;
  	list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list)
  		posted++;
  
  	hip =  lpfc_hbq_defs[i];
  	len +=  snprintf(buf+len, size-len,
  		"idx:%d prof:%d rn:%d bufcnt:%d icnt:%d acnt:%d posted %d\n",
  		hip->hbq_index, hip->profile, hip->rn,
  		hip->buffer_count, hip->init_count, hip->add_count, posted);
  
  	raw_index = phba->hbq_get[i];
  	getidx = le32_to_cpu(raw_index);
  	len +=  snprintf(buf+len, size-len,
  		"entrys:%d bufcnt:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n",
  		hbqs->entry_count, hbqs->buffer_count, hbqs->hbqPutIdx,
  		hbqs->next_hbqPutIdx, hbqs->local_hbqGetIdx, getidx);
  
  	hbqe = (struct lpfc_hbq_entry *) phba->hbqs[i].hbq_virt;
  	for (j=0; j<hbqs->entry_count; j++) {
  		len +=  snprintf(buf+len, size-len,
  			"%03d: %08x %04x %05x ", j,
  			le32_to_cpu(hbqe->bde.addrLow),
  			le32_to_cpu(hbqe->bde.tus.w),
  			le32_to_cpu(hbqe->buffer_tag));
  		i = 0;
  		found = 0;
  
  		/* First calculate if slot has an associated posted buffer */
  		low = hbqs->hbqPutIdx - posted;
  		if (low >= 0) {
  			if ((j >= hbqs->hbqPutIdx) || (j < low)) {
  				len +=  snprintf(buf+len, size-len, "Unused\n");
  				goto skipit;
  			}
  		}
  		else {
  			if ((j >= hbqs->hbqPutIdx) &&
  				(j < (hbqs->entry_count+low))) {
  				len +=  snprintf(buf+len, size-len, "Unused\n");
  				goto skipit;
  			}
  		}
  
  		/* Get the Buffer info for the posted buffer */
  		list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) {
  			hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
  			phys = ((uint64_t)hbq_buf->dbuf.phys & 0xffffffff);
  			if (phys == le32_to_cpu(hbqe->bde.addrLow)) {
  				len +=  snprintf(buf+len, size-len,
  					"Buf%d: %p %06x\n", i,
  					hbq_buf->dbuf.virt, hbq_buf->tag);
  				found = 1;
  				break;
  			}
  			i++;
  		}
  		if (!found) {
  			len +=  snprintf(buf+len, size-len, "No DMAinfo?\n");
  		}
  skipit:
  		hbqe++;
  		if (len > LPFC_HBQINFO_SIZE - 54)
  			break;
  	}
  	spin_unlock_irq(&phba->hbalock);
  	return len;
  }
  
  static int lpfc_debugfs_last_hba_slim_off;
  
  /**
   * lpfc_debugfs_dumpHBASlim_data - Dump HBA SLIM info to a buffer
   * @phba: The HBA to gather SLIM info from.
   * @buf: The buffer to dump log into.
   * @size: The maximum amount of data to process.
   *
   * Description:
   * This routine dumps the current contents of HBA SLIM for the HBA associated
   * with @phba to @buf up to @size bytes of data. This is the raw HBA SLIM data.
   *
   * Notes:
   * This routine will only dump up to 1024 bytes of data each time called and
   * should be called multiple times to dump the entire HBA SLIM.
   *
   * Return Value:
   * This routine returns the amount of bytes that were dumped into @buf and will
   * not exceed @size.
   **/
  static int
  lpfc_debugfs_dumpHBASlim_data(struct lpfc_hba *phba, char *buf, int size)
  {
  	int len = 0;
  	int i, off;
  	uint32_t *ptr;
  	char buffer[1024];
  
  	off = 0;
  	spin_lock_irq(&phba->hbalock);
  
  	len +=  snprintf(buf+len, size-len, "HBA SLIM\n");
  	lpfc_memcpy_from_slim(buffer,
  		phba->MBslimaddr + lpfc_debugfs_last_hba_slim_off, 1024);
  
  	ptr = (uint32_t *)&buffer[0];
  	off = lpfc_debugfs_last_hba_slim_off;
  
  	/* Set it up for the next time */
  	lpfc_debugfs_last_hba_slim_off += 1024;
  	if (lpfc_debugfs_last_hba_slim_off >= 4096)
  		lpfc_debugfs_last_hba_slim_off = 0;
  
  	i = 1024;
  	while (i > 0) {
  		len +=  snprintf(buf+len, size-len,
  		"%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
  		off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
  		*(ptr+5), *(ptr+6), *(ptr+7));
  		ptr += 8;
  		i -= (8 * sizeof(uint32_t));
  		off += (8 * sizeof(uint32_t));
  	}
  
  	spin_unlock_irq(&phba->hbalock);
  	return len;
  }
  
  /**
   * lpfc_debugfs_dumpHostSlim_data - Dump host SLIM info to a buffer
   * @phba: The HBA to gather Host SLIM info from.
   * @buf: The buffer to dump log into.
   * @size: The maximum amount of data to process.
   *
   * Description:
   * This routine dumps the current contents of host SLIM for the host associated
   * with @phba to @buf up to @size bytes of data. The dump will contain the
   * Mailbox, PCB, Rings, and Registers that are located in host memory.
   *
   * Return Value:
   * This routine returns the amount of bytes that were dumped into @buf and will
   * not exceed @size.
   **/
  static int
  lpfc_debugfs_dumpHostSlim_data(struct lpfc_hba *phba, char *buf, int size)
  {
  	int len = 0;
  	int i, off;
  	uint32_t word0, word1, word2, word3;
  	uint32_t *ptr;
  	struct lpfc_pgp *pgpp;
  	struct lpfc_sli *psli = &phba->sli;
  	struct lpfc_sli_ring *pring;
  
  	off = 0;
  	spin_lock_irq(&phba->hbalock);
  
  	len +=  snprintf(buf+len, size-len, "SLIM Mailbox\n");
  	ptr = (uint32_t *)phba->slim2p.virt;
  	i = sizeof(MAILBOX_t);
  	while (i > 0) {
  		len +=  snprintf(buf+len, size-len,
  		"%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
  		off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
  		*(ptr+5), *(ptr+6), *(ptr+7));
  		ptr += 8;
  		i -= (8 * sizeof(uint32_t));
  		off += (8 * sizeof(uint32_t));
  	}
  
  	len +=  snprintf(buf+len, size-len, "SLIM PCB\n");
  	ptr = (uint32_t *)phba->pcb;
  	i = sizeof(PCB_t);
  	while (i > 0) {
  		len +=  snprintf(buf+len, size-len,
  		"%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
  		off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
  		*(ptr+5), *(ptr+6), *(ptr+7));
  		ptr += 8;
  		i -= (8 * sizeof(uint32_t));
  		off += (8 * sizeof(uint32_t));
  	}
  
  	for (i = 0; i < 4; i++) {
  		pgpp = &phba->port_gp[i];
  		pring = &psli->ring[i];
  		len +=  snprintf(buf+len, size-len,
  				 "Ring %d: CMD GetInx:%d (Max:%d Next:%d "
  				 "Local:%d flg:x%x)  RSP PutInx:%d Max:%d\n",
  				 i, pgpp->cmdGetInx, pring->numCiocb,
  				 pring->next_cmdidx, pring->local_getidx,
  				 pring->flag, pgpp->rspPutInx, pring->numRiocb);
  	}
  
  	if (phba->sli_rev <= LPFC_SLI_REV3) {
  		word0 = readl(phba->HAregaddr);
  		word1 = readl(phba->CAregaddr);
  		word2 = readl(phba->HSregaddr);
  		word3 = readl(phba->HCregaddr);
  		len +=  snprintf(buf+len, size-len, "HA:%08x CA:%08x HS:%08x "
  				 "HC:%08x\n", word0, word1, word2, word3);
  	}
  	spin_unlock_irq(&phba->hbalock);
  	return len;
  }
  
  /**
   * lpfc_debugfs_nodelist_data - Dump target node list to a buffer
   * @vport: The vport to gather target node info from.
   * @buf: The buffer to dump log into.
   * @size: The maximum amount of data to process.
   *
   * Description:
   * This routine dumps the current target node list associated with @vport to
   * @buf up to @size bytes of data. Each node entry in the dump will contain a
   * node state, DID, WWPN, WWNN, RPI, flags, type, and other useful fields.
   *
   * Return Value:
   * This routine returns the amount of bytes that were dumped into @buf and will
   * not exceed @size.
   **/
  static int
  lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size)
  {
  	int len = 0;
  	int cnt;
  	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
  	struct lpfc_nodelist *ndlp;
  	unsigned char *statep, *name;
  
  	cnt = (LPFC_NODELIST_SIZE / LPFC_NODELIST_ENTRY_SIZE);
  
  	spin_lock_irq(shost->host_lock);
  	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
  		if (!cnt) {
  			len +=  snprintf(buf+len, size-len,
  				"Missing Nodelist Entries\n");
  			break;
  		}
  		cnt--;
  		switch (ndlp->nlp_state) {
  		case NLP_STE_UNUSED_NODE:
  			statep = "UNUSED";
  			break;
  		case NLP_STE_PLOGI_ISSUE:
  			statep = "PLOGI ";
  			break;
  		case NLP_STE_ADISC_ISSUE:
  			statep = "ADISC ";
  			break;
  		case NLP_STE_REG_LOGIN_ISSUE:
  			statep = "REGLOG";
  			break;
  		case NLP_STE_PRLI_ISSUE:
  			statep = "PRLI  ";
  			break;
  		case NLP_STE_UNMAPPED_NODE:
  			statep = "UNMAP ";
  			break;
  		case NLP_STE_MAPPED_NODE:
  			statep = "MAPPED";
  			break;
  		case NLP_STE_NPR_NODE:
  			statep = "NPR   ";
  			break;
  		default:
  			statep = "UNKNOWN";
  		}
  		len +=  snprintf(buf+len, size-len, "%s DID:x%06x ",
  			statep, ndlp->nlp_DID);
  		name = (unsigned char *)&ndlp->nlp_portname;
  		len +=  snprintf(buf+len, size-len,
  			"WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ",
  			*name, *(name+1), *(name+2), *(name+3),
  			*(name+4), *(name+5), *(name+6), *(name+7));
  		name = (unsigned char *)&ndlp->nlp_nodename;
  		len +=  snprintf(buf+len, size-len,
  			"WWNN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ",
  			*name, *(name+1), *(name+2), *(name+3),
  			*(name+4), *(name+5), *(name+6), *(name+7));
  		len +=  snprintf(buf+len, size-len, "RPI:%03d flag:x%08x ",
  			ndlp->nlp_rpi, ndlp->nlp_flag);
  		if (!ndlp->nlp_type)
  			len +=  snprintf(buf+len, size-len, "UNKNOWN_TYPE ");
  		if (ndlp->nlp_type & NLP_FC_NODE)
  			len +=  snprintf(buf+len, size-len, "FC_NODE ");
  		if (ndlp->nlp_type & NLP_FABRIC)
  			len +=  snprintf(buf+len, size-len, "FABRIC ");
  		if (ndlp->nlp_type & NLP_FCP_TARGET)
  			len +=  snprintf(buf+len, size-len, "FCP_TGT sid:%d ",
  				ndlp->nlp_sid);
  		if (ndlp->nlp_type & NLP_FCP_INITIATOR)
  			len +=  snprintf(buf+len, size-len, "FCP_INITIATOR ");
  		len += snprintf(buf+len, size-len, "usgmap:%x ",
  			ndlp->nlp_usg_map);
  		len += snprintf(buf+len, size-len, "refcnt:%x",
  			atomic_read(&ndlp->kref.refcount));
  		len +=  snprintf(buf+len, size-len, "\n");
  	}
  	spin_unlock_irq(shost->host_lock);
  	return len;
  }
  #endif
  
  /**
   * lpfc_debugfs_disc_trc - Store discovery trace log
   * @vport: The vport to associate this trace string with for retrieval.
   * @mask: Log entry classification.
   * @fmt: Format string to be displayed when dumping the log.
   * @data1: 1st data parameter to be applied to @fmt.
   * @data2: 2nd data parameter to be applied to @fmt.
   * @data3: 3rd data parameter to be applied to @fmt.
   *
   * Description:
   * This routine is used by the driver code to add a debugfs log entry to the
   * discovery trace buffer associated with @vport. Only entries with a @mask that
   * match the current debugfs discovery mask will be saved. Entries that do not
   * match will be thrown away. @fmt, @data1, @data2, and @data3 are used like
   * printf when displaying the log.
   **/
  inline void
  lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt,
  	uint32_t data1, uint32_t data2, uint32_t data3)
  {
  #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
  	struct lpfc_debugfs_trc *dtp;
  	int index;
  
  	if (!(lpfc_debugfs_mask_disc_trc & mask))
  		return;
  
  	if (!lpfc_debugfs_enable || !lpfc_debugfs_max_disc_trc ||
  		!vport || !vport->disc_trc)
  		return;
  
  	index = atomic_inc_return(&vport->disc_trc_cnt) &
  		(lpfc_debugfs_max_disc_trc - 1);
  	dtp = vport->disc_trc + index;
  	dtp->fmt = fmt;
  	dtp->data1 = data1;
  	dtp->data2 = data2;
  	dtp->data3 = data3;
  	dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
  	dtp->jif = jiffies;
  #endif
  	return;
  }
  
  /**
   * lpfc_debugfs_slow_ring_trc - Store slow ring trace log
   * @phba: The phba to associate this trace string with for retrieval.
   * @fmt: Format string to be displayed when dumping the log.
   * @data1: 1st data parameter to be applied to @fmt.
   * @data2: 2nd data parameter to be applied to @fmt.
   * @data3: 3rd data parameter to be applied to @fmt.
   *
   * Description:
   * This routine is used by the driver code to add a debugfs log entry to the
   * discovery trace buffer associated with @vport. @fmt, @data1, @data2, and
   * @data3 are used like printf when displaying the log.
   **/
  inline void
  lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt,
  	uint32_t data1, uint32_t data2, uint32_t data3)
  {
  #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
  	struct lpfc_debugfs_trc *dtp;
  	int index;
  
  	if (!lpfc_debugfs_enable || !lpfc_debugfs_max_slow_ring_trc ||
  		!phba || !phba->slow_ring_trc)
  		return;
  
  	index = atomic_inc_return(&phba->slow_ring_trc_cnt) &
  		(lpfc_debugfs_max_slow_ring_trc - 1);
  	dtp = phba->slow_ring_trc + index;
  	dtp->fmt = fmt;
  	dtp->data1 = data1;
  	dtp->data2 = data2;
  	dtp->data3 = data3;
  	dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
  	dtp->jif = jiffies;
  #endif
  	return;
  }
  
  #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
  /**
   * lpfc_debugfs_disc_trc_open - Open the discovery trace log
   * @inode: The inode pointer that contains a vport pointer.
   * @file: The file pointer to attach the log output.
   *
   * Description:
   * This routine is the entry point for the debugfs open file operation. It gets
   * the vport from the i_private field in @inode, allocates the necessary buffer
   * for the log, fills the buffer from the in-memory log for this vport, and then
   * returns a pointer to that log in the private_data field in @file.
   *
   * Returns:
   * This function returns zero if successful. On error it will return an negative
   * error value.
   **/
  static int
  lpfc_debugfs_disc_trc_open(struct inode *inode, struct file *file)
  {
  	struct lpfc_vport *vport = inode->i_private;
  	struct lpfc_debug *debug;
  	int size;
  	int rc = -ENOMEM;
  
  	if (!lpfc_debugfs_max_disc_trc) {
  		 rc = -ENOSPC;
  		goto out;
  	}
  
  	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
  	if (!debug)
  		goto out;
  
  	/* Round to page boundary */
  	size =  (lpfc_debugfs_max_disc_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
  	size = PAGE_ALIGN(size);
  
  	debug->buffer = kmalloc(size, GFP_KERNEL);
  	if (!debug->buffer) {
  		kfree(debug);
  		goto out;
  	}
  
  	debug->len = lpfc_debugfs_disc_trc_data(vport, debug->buffer, size);
  	file->private_data = debug;
  
  	rc = 0;
  out:
  	return rc;
  }
  
  /**
   * lpfc_debugfs_slow_ring_trc_open - Open the Slow Ring trace log
   * @inode: The inode pointer that contains a vport pointer.
   * @file: The file pointer to attach the log output.
   *
   * Description:
   * This routine is the entry point for the debugfs open file operation. It gets
   * the vport from the i_private field in @inode, allocates the necessary buffer
   * for the log, fills the buffer from the in-memory log for this vport, and then
   * returns a pointer to that log in the private_data field in @file.
   *
   * Returns:
   * This function returns zero if successful. On error it will return an negative
   * error value.
   **/
  static int
  lpfc_debugfs_slow_ring_trc_open(struct inode *inode, struct file *file)
  {
  	struct lpfc_hba *phba = inode->i_private;
  	struct lpfc_debug *debug;
  	int size;
  	int rc = -ENOMEM;
  
  	if (!lpfc_debugfs_max_slow_ring_trc) {
  		 rc = -ENOSPC;
  		goto out;
  	}
  
  	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
  	if (!debug)
  		goto out;
  
  	/* Round to page boundary */
  	size =  (lpfc_debugfs_max_slow_ring_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
  	size = PAGE_ALIGN(size);
  
  	debug->buffer = kmalloc(size, GFP_KERNEL);
  	if (!debug->buffer) {
  		kfree(debug);
  		goto out;
  	}
  
  	debug->len = lpfc_debugfs_slow_ring_trc_data(phba, debug->buffer, size);
  	file->private_data = debug;
  
  	rc = 0;
  out:
  	return rc;
  }
  
  /**
   * lpfc_debugfs_hbqinfo_open - Open the hbqinfo debugfs buffer
   * @inode: The inode pointer that contains a vport pointer.
   * @file: The file pointer to attach the log output.
   *
   * Description:
   * This routine is the entry point for the debugfs open file operation. It gets
   * the vport from the i_private field in @inode, allocates the necessary buffer
   * for the log, fills the buffer from the in-memory log for this vport, and then
   * returns a pointer to that log in the private_data field in @file.
   *
   * Returns:
   * This function returns zero if successful. On error it will return an negative
   * error value.
   **/
  static int
  lpfc_debugfs_hbqinfo_open(struct inode *inode, struct file *file)
  {
  	struct lpfc_hba *phba = inode->i_private;
  	struct lpfc_debug *debug;
  	int rc = -ENOMEM;
  
  	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
  	if (!debug)
  		goto out;
  
  	/* Round to page boundary */
  	debug->buffer = kmalloc(LPFC_HBQINFO_SIZE, GFP_KERNEL);
  	if (!debug->buffer) {
  		kfree(debug);
  		goto out;
  	}
  
  	debug->len = lpfc_debugfs_hbqinfo_data(phba, debug->buffer,
  		LPFC_HBQINFO_SIZE);
  	file->private_data = debug;
  
  	rc = 0;
  out:
  	return rc;
  }
  
  /**
   * lpfc_debugfs_dumpHBASlim_open - Open the Dump HBA SLIM debugfs buffer
   * @inode: The inode pointer that contains a vport pointer.
   * @file: The file pointer to attach the log output.
   *
   * Description:
   * This routine is the entry point for the debugfs open file operation. It gets
   * the vport from the i_private field in @inode, allocates the necessary buffer
   * for the log, fills the buffer from the in-memory log for this vport, and then
   * returns a pointer to that log in the private_data field in @file.
   *
   * Returns:
   * This function returns zero if successful. On error it will return an negative
   * error value.
   **/
  static int
  lpfc_debugfs_dumpHBASlim_open(struct inode *inode, struct file *file)
  {
  	struct lpfc_hba *phba = inode->i_private;
  	struct lpfc_debug *debug;
  	int rc = -ENOMEM;
  
  	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
  	if (!debug)
  		goto out;
  
  	/* Round to page boundary */
  	debug->buffer = kmalloc(LPFC_DUMPHBASLIM_SIZE, GFP_KERNEL);
  	if (!debug->buffer) {
  		kfree(debug);
  		goto out;
  	}
  
  	debug->len = lpfc_debugfs_dumpHBASlim_data(phba, debug->buffer,
  		LPFC_DUMPHBASLIM_SIZE);
  	file->private_data = debug;
  
  	rc = 0;
  out:
  	return rc;
  }
  
  /**
   * lpfc_debugfs_dumpHostSlim_open - Open the Dump Host SLIM debugfs buffer
   * @inode: The inode pointer that contains a vport pointer.
   * @file: The file pointer to attach the log output.
   *
   * Description:
   * This routine is the entry point for the debugfs open file operation. It gets
   * the vport from the i_private field in @inode, allocates the necessary buffer
   * for the log, fills the buffer from the in-memory log for this vport, and then
   * returns a pointer to that log in the private_data field in @file.
   *
   * Returns:
   * This function returns zero if successful. On error it will return an negative
   * error value.
   **/
  static int
  lpfc_debugfs_dumpHostSlim_open(struct inode *inode, struct file *file)
  {
  	struct lpfc_hba *phba = inode->i_private;
  	struct lpfc_debug *debug;
  	int rc = -ENOMEM;
  
  	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
  	if (!debug)
  		goto out;
  
  	/* Round to page boundary */
  	debug->buffer = kmalloc(LPFC_DUMPHOSTSLIM_SIZE, GFP_KERNEL);
  	if (!debug->buffer) {
  		kfree(debug);
  		goto out;
  	}
  
  	debug->len = lpfc_debugfs_dumpHostSlim_data(phba, debug->buffer,
  		LPFC_DUMPHOSTSLIM_SIZE);
  	file->private_data = debug;
  
  	rc = 0;
  out:
  	return rc;
  }
  
  static int
  lpfc_debugfs_dumpData_open(struct inode *inode, struct file *file)
  {
  	struct lpfc_debug *debug;
  	int rc = -ENOMEM;
  
  	if (!_dump_buf_data)
  		return -EBUSY;
  
  	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
  	if (!debug)
  		goto out;
  
  	/* Round to page boundry */
  	printk(KERN_ERR "9059 BLKGRD:  %s: _dump_buf_data=0x%p\n",
  			__func__, _dump_buf_data);
  	debug->buffer = _dump_buf_data;
  	if (!debug->buffer) {
  		kfree(debug);
  		goto out;
  	}
  
  	debug->len = (1 << _dump_buf_data_order) << PAGE_SHIFT;
  	file->private_data = debug;
  
  	rc = 0;
  out:
  	return rc;
  }
  
  static int
  lpfc_debugfs_dumpDif_open(struct inode *inode, struct file *file)
  {
  	struct lpfc_debug *debug;
  	int rc = -ENOMEM;
  
  	if (!_dump_buf_dif)
  		return -EBUSY;
  
  	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
  	if (!debug)
  		goto out;
  
  	/* Round to page boundry */
  	printk(KERN_ERR	"9060 BLKGRD: %s: _dump_buf_dif=0x%p file=%s\n",
  		__func__, _dump_buf_dif, file->f_dentry->d_name.name);
  	debug->buffer = _dump_buf_dif;
  	if (!debug->buffer) {
  		kfree(debug);
  		goto out;
  	}
  
  	debug->len = (1 << _dump_buf_dif_order) << PAGE_SHIFT;
  	file->private_data = debug;
  
  	rc = 0;
  out:
  	return rc;
  }
  
  static ssize_t
  lpfc_debugfs_dumpDataDif_write(struct file *file, const char __user *buf,
  		  size_t nbytes, loff_t *ppos)
  {
  	/*
  	 * The Data/DIF buffers only save one failing IO
  	 * The write op is used as a reset mechanism after an IO has
  	 * already been saved to the next one can be saved
  	 */
  	spin_lock(&_dump_buf_lock);
  
  	memset((void *)_dump_buf_data, 0,
  			((1 << PAGE_SHIFT) << _dump_buf_data_order));
  	memset((void *)_dump_buf_dif, 0,
  			((1 << PAGE_SHIFT) << _dump_buf_dif_order));
  
  	_dump_buf_done = 0;
  
  	spin_unlock(&_dump_buf_lock);
  
  	return nbytes;
  }
  
  
  
  /**
   * lpfc_debugfs_nodelist_open - Open the nodelist debugfs file
   * @inode: The inode pointer that contains a vport pointer.
   * @file: The file pointer to attach the log output.
   *
   * Description:
   * This routine is the entry point for the debugfs open file operation. It gets
   * the vport from the i_private field in @inode, allocates the necessary buffer
   * for the log, fills the buffer from the in-memory log for this vport, and then
   * returns a pointer to that log in the private_data field in @file.
   *
   * Returns:
   * This function returns zero if successful. On error it will return an negative
   * error value.
   **/
  static int
  lpfc_debugfs_nodelist_open(struct inode *inode, struct file *file)
  {
  	struct lpfc_vport *vport = inode->i_private;
  	struct lpfc_debug *debug;
  	int rc = -ENOMEM;
  
  	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
  	if (!debug)
  		goto out;
  
  	/* Round to page boundary */
  	debug->buffer = kmalloc(LPFC_NODELIST_SIZE, GFP_KERNEL);
  	if (!debug->buffer) {
  		kfree(debug);
  		goto out;
  	}
  
  	debug->len = lpfc_debugfs_nodelist_data(vport, debug->buffer,
  		LPFC_NODELIST_SIZE);
  	file->private_data = debug;
  
  	rc = 0;
  out:
  	return rc;
  }
  
  /**
   * lpfc_debugfs_lseek - Seek through a debugfs file
   * @file: The file pointer to seek through.
   * @off: The offset to seek to or the amount to seek by.
   * @whence: Indicates how to seek.
   *
   * Description:
   * This routine is the entry point for the debugfs lseek file operation. The
   * @whence parameter indicates whether @off is the offset to directly seek to,
   * or if it is a value to seek forward or reverse by. This function figures out
   * what the new offset of the debugfs file will be and assigns that value to the
   * f_pos field of @file.
   *
   * Returns:
   * This function returns the new offset if successful and returns a negative
   * error if unable to process the seek.
   **/
  static loff_t
  lpfc_debugfs_lseek(struct file *file, loff_t off, int whence)
  {
  	struct lpfc_debug *debug;
  	loff_t pos = -1;
  
  	debug = file->private_data;
  
  	switch (whence) {
  	case 0:
  		pos = off;
  		break;
  	case 1:
  		pos = file->f_pos + off;
  		break;
  	case 2:
  		pos = debug->len - off;
  	}
  	return (pos < 0 || pos > debug->len) ? -EINVAL : (file->f_pos = pos);
  }
  
  /**
   * lpfc_debugfs_read - Read a debugfs file
   * @file: The file pointer to read from.
   * @buf: The buffer to copy the data to.
   * @nbytes: The number of bytes to read.
   * @ppos: The position in the file to start reading from.
   *
   * Description:
   * This routine reads data from from the buffer indicated in the private_data
   * field of @file. It will start reading at @ppos and copy up to @nbytes of
   * data to @buf.
   *
   * Returns:
   * This function returns the amount of data that was read (this could be less
   * than @nbytes if the end of the file was reached) or a negative error value.
   **/
  static ssize_t
  lpfc_debugfs_read(struct file *file, char __user *buf,
  		  size_t nbytes, loff_t *ppos)
  {
  	struct lpfc_debug *debug = file->private_data;
  	return simple_read_from_buffer(buf, nbytes, ppos, debug->buffer,
  				       debug->len);
  }
  
  /**
   * lpfc_debugfs_release - Release the buffer used to store debugfs file data
   * @inode: The inode pointer that contains a vport pointer. (unused)
   * @file: The file pointer that contains the buffer to release.
   *
   * Description:
   * This routine frees the buffer that was allocated when the debugfs file was
   * opened.
   *
   * Returns:
   * This function returns zero.
   **/
  static int
  lpfc_debugfs_release(struct inode *inode, struct file *file)
  {
  	struct lpfc_debug *debug = file->private_data;
  
  	kfree(debug->buffer);
  	kfree(debug);
  
  	return 0;
  }
  
  static int
  lpfc_debugfs_dumpDataDif_release(struct inode *inode, struct file *file)
  {
  	struct lpfc_debug *debug = file->private_data;
  
  	debug->buffer = NULL;
  	kfree(debug);
  
  	return 0;
  }
  
  #undef lpfc_debugfs_op_disc_trc
  static const struct file_operations lpfc_debugfs_op_disc_trc = {
  	.owner =        THIS_MODULE,
  	.open =         lpfc_debugfs_disc_trc_open,
  	.llseek =       lpfc_debugfs_lseek,
  	.read =         lpfc_debugfs_read,
  	.release =      lpfc_debugfs_release,
  };
  
  #undef lpfc_debugfs_op_nodelist
  static const struct file_operations lpfc_debugfs_op_nodelist = {
  	.owner =        THIS_MODULE,
  	.open =         lpfc_debugfs_nodelist_open,
  	.llseek =       lpfc_debugfs_lseek,
  	.read =         lpfc_debugfs_read,
  	.release =      lpfc_debugfs_release,
  };
  
  #undef lpfc_debugfs_op_hbqinfo
  static const struct file_operations lpfc_debugfs_op_hbqinfo = {
  	.owner =        THIS_MODULE,
  	.open =         lpfc_debugfs_hbqinfo_open,
  	.llseek =       lpfc_debugfs_lseek,
  	.read =         lpfc_debugfs_read,
  	.release =      lpfc_debugfs_release,
  };
  
  #undef lpfc_debugfs_op_dumpHBASlim
  static const struct file_operations lpfc_debugfs_op_dumpHBASlim = {
  	.owner =        THIS_MODULE,
  	.open =         lpfc_debugfs_dumpHBASlim_open,
  	.llseek =       lpfc_debugfs_lseek,
  	.read =         lpfc_debugfs_read,
  	.release =      lpfc_debugfs_release,
  };
  
  #undef lpfc_debugfs_op_dumpHostSlim
  static const struct file_operations lpfc_debugfs_op_dumpHostSlim = {
  	.owner =        THIS_MODULE,
  	.open =         lpfc_debugfs_dumpHostSlim_open,
  	.llseek =       lpfc_debugfs_lseek,
  	.read =         lpfc_debugfs_read,
  	.release =      lpfc_debugfs_release,
  };
  
  #undef lpfc_debugfs_op_dumpData
  static const struct file_operations lpfc_debugfs_op_dumpData = {
  	.owner =        THIS_MODULE,
  	.open =         lpfc_debugfs_dumpData_open,
  	.llseek =       lpfc_debugfs_lseek,
  	.read =         lpfc_debugfs_read,
  	.write =	lpfc_debugfs_dumpDataDif_write,
  	.release =      lpfc_debugfs_dumpDataDif_release,
  };
  
  #undef lpfc_debugfs_op_dumpDif
  static const struct file_operations lpfc_debugfs_op_dumpDif = {
  	.owner =        THIS_MODULE,
  	.open =         lpfc_debugfs_dumpDif_open,
  	.llseek =       lpfc_debugfs_lseek,
  	.read =         lpfc_debugfs_read,
  	.write =	lpfc_debugfs_dumpDataDif_write,
  	.release =      lpfc_debugfs_dumpDataDif_release,
  };
  
  #undef lpfc_debugfs_op_slow_ring_trc
  static const struct file_operations lpfc_debugfs_op_slow_ring_trc = {
  	.owner =        THIS_MODULE,
  	.open =         lpfc_debugfs_slow_ring_trc_open,
  	.llseek =       lpfc_debugfs_lseek,
  	.read =         lpfc_debugfs_read,
  	.release =      lpfc_debugfs_release,
  };
  
  static struct dentry *lpfc_debugfs_root = NULL;
  static atomic_t lpfc_debugfs_hba_count;
  #endif
  
  /**
   * lpfc_debugfs_initialize - Initialize debugfs for a vport
   * @vport: The vport pointer to initialize.
   *
   * Description:
   * When Debugfs is configured this routine sets up the lpfc debugfs file system.
   * If not already created, this routine will create the lpfc directory, and
   * lpfcX directory (for this HBA), and vportX directory for this vport. It will
   * also create each file used to access lpfc specific debugfs information.
   **/
  inline void
  lpfc_debugfs_initialize(struct lpfc_vport *vport)
  {
  #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
  	struct lpfc_hba   *phba = vport->phba;
  	char name[64];
  	uint32_t num, i;
  
  	if (!lpfc_debugfs_enable)
  		return;
  
  	/* Setup lpfc root directory */
  	if (!lpfc_debugfs_root) {
  		lpfc_debugfs_root = debugfs_create_dir("lpfc", NULL);
  		atomic_set(&lpfc_debugfs_hba_count, 0);
  		if (!lpfc_debugfs_root) {
  			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
  					 "0408 Cannot create debugfs root\n");
  			goto debug_failed;
  		}
  	}
  	if (!lpfc_debugfs_start_time)
  		lpfc_debugfs_start_time = jiffies;
  
  	/* Setup lpfcX directory for specific HBA */
  	snprintf(name, sizeof(name), "lpfc%d", phba->brd_no);
  	if (!phba->hba_debugfs_root) {
  		phba->hba_debugfs_root =
  			debugfs_create_dir(name, lpfc_debugfs_root);
  		if (!phba->hba_debugfs_root) {
  			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
  					 "0412 Cannot create debugfs hba\n");
  			goto debug_failed;
  		}
  		atomic_inc(&lpfc_debugfs_hba_count);
  		atomic_set(&phba->debugfs_vport_count, 0);
  
  		/* Setup hbqinfo */
  		snprintf(name, sizeof(name), "hbqinfo");
  		phba->debug_hbqinfo =
  			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
  				 phba->hba_debugfs_root,
  				 phba, &lpfc_debugfs_op_hbqinfo);
  		if (!phba->debug_hbqinfo) {
  			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
  				"0411 Cannot create debugfs hbqinfo\n");
  			goto debug_failed;
  		}
  
  		/* Setup dumpHBASlim */
  		snprintf(name, sizeof(name), "dumpHBASlim");
  		phba->debug_dumpHBASlim =
  			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
  				 phba->hba_debugfs_root,
  				 phba, &lpfc_debugfs_op_dumpHBASlim);
  		if (!phba->debug_dumpHBASlim) {
  			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
  				"0413 Cannot create debugfs dumpHBASlim\n");
  			goto debug_failed;
  		}
  
  		/* Setup dumpHostSlim */
  		snprintf(name, sizeof(name), "dumpHostSlim");
  		phba->debug_dumpHostSlim =
  			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
  				 phba->hba_debugfs_root,
  				 phba, &lpfc_debugfs_op_dumpHostSlim);
  		if (!phba->debug_dumpHostSlim) {
  			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
  				"0414 Cannot create debugfs dumpHostSlim\n");
  			goto debug_failed;
  		}
  
  		/* Setup dumpData */
  		snprintf(name, sizeof(name), "dumpData");
  		phba->debug_dumpData =
  			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
  				 phba->hba_debugfs_root,
  				 phba, &lpfc_debugfs_op_dumpData);
  		if (!phba->debug_dumpData) {
  			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
  				"0800 Cannot create debugfs dumpData\n");
  			goto debug_failed;
  		}
  
  		/* Setup dumpDif */
  		snprintf(name, sizeof(name), "dumpDif");
  		phba->debug_dumpDif =
  			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
  				 phba->hba_debugfs_root,
  				 phba, &lpfc_debugfs_op_dumpDif);
  		if (!phba->debug_dumpDif) {
  			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
  				"0801 Cannot create debugfs dumpDif\n");
  			goto debug_failed;
  		}
  
  
  
  		/* Setup slow ring trace */
  		if (lpfc_debugfs_max_slow_ring_trc) {
  			num = lpfc_debugfs_max_slow_ring_trc - 1;
  			if (num & lpfc_debugfs_max_slow_ring_trc) {
  				/* Change to be a power of 2 */
  				num = lpfc_debugfs_max_slow_ring_trc;
  				i = 0;
  				while (num > 1) {
  					num = num >> 1;
  					i++;
  				}
  				lpfc_debugfs_max_slow_ring_trc = (1 << i);
  				printk(KERN_ERR
  				       "lpfc_debugfs_max_disc_trc changed to "
  				       "%d\n", lpfc_debugfs_max_disc_trc);
  			}
  		}
  
  
  		snprintf(name, sizeof(name), "slow_ring_trace");
  		phba->debug_slow_ring_trc =
  			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
  				 phba->hba_debugfs_root,
  				 phba, &lpfc_debugfs_op_slow_ring_trc);
  		if (!phba->debug_slow_ring_trc) {
  			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
  					 "0415 Cannot create debugfs "
  					 "slow_ring_trace\n");
  			goto debug_failed;
  		}
  		if (!phba->slow_ring_trc) {
  			phba->slow_ring_trc = kmalloc(
  				(sizeof(struct lpfc_debugfs_trc) *
  				lpfc_debugfs_max_slow_ring_trc),
  				GFP_KERNEL);
  			if (!phba->slow_ring_trc) {
  				lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
  						 "0416 Cannot create debugfs "
  						 "slow_ring buffer\n");
  				goto debug_failed;
  			}
  			atomic_set(&phba->slow_ring_trc_cnt, 0);
  			memset(phba->slow_ring_trc, 0,
  				(sizeof(struct lpfc_debugfs_trc) *
  				lpfc_debugfs_max_slow_ring_trc));
  		}
  	}
  
  	snprintf(name, sizeof(name), "vport%d", vport->vpi);
  	if (!vport->vport_debugfs_root) {
  		vport->vport_debugfs_root =
  			debugfs_create_dir(name, phba->hba_debugfs_root);
  		if (!vport->vport_debugfs_root) {
  			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
  					 "0417 Cant create debugfs\n");
  			goto debug_failed;
  		}
  		atomic_inc(&phba->debugfs_vport_count);
  	}
  
  	if (lpfc_debugfs_max_disc_trc) {
  		num = lpfc_debugfs_max_disc_trc - 1;
  		if (num & lpfc_debugfs_max_disc_trc) {
  			/* Change to be a power of 2 */
  			num = lpfc_debugfs_max_disc_trc;
  			i = 0;
  			while (num > 1) {
  				num = num >> 1;
  				i++;
  			}
  			lpfc_debugfs_max_disc_trc = (1 << i);
  			printk(KERN_ERR
  			       "lpfc_debugfs_max_disc_trc changed to %d\n",
  			       lpfc_debugfs_max_disc_trc);
  		}
  	}
  
  	vport->disc_trc = kzalloc(
  		(sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc),
  		GFP_KERNEL);
  
  	if (!vport->disc_trc) {
  		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
  				 "0418 Cannot create debugfs disc trace "
  				 "buffer\n");
  		goto debug_failed;
  	}
  	atomic_set(&vport->disc_trc_cnt, 0);
  
  	snprintf(name, sizeof(name), "discovery_trace");
  	vport->debug_disc_trc =
  		debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
  				 vport->vport_debugfs_root,
  				 vport, &lpfc_debugfs_op_disc_trc);
  	if (!vport->debug_disc_trc) {
  		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
  				 "0419 Cannot create debugfs "
  				 "discovery_trace\n");
  		goto debug_failed;
  	}
  	snprintf(name, sizeof(name), "nodelist");
  	vport->debug_nodelist =
  		debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
  				 vport->vport_debugfs_root,
  				 vport, &lpfc_debugfs_op_nodelist);
  	if (!vport->debug_nodelist) {
  		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
  				 "0409 Cant create debugfs nodelist\n");
  		goto debug_failed;
  	}
  debug_failed:
  	return;
  #endif
  }
  
  /**
   * lpfc_debugfs_terminate -  Tear down debugfs infrastructure for this vport
   * @vport: The vport pointer to remove from debugfs.
   *
   * Description:
   * When Debugfs is configured this routine removes debugfs file system elements
   * that are specific to this vport. It also checks to see if there are any
   * users left for the debugfs directories associated with the HBA and driver. If
   * this is the last user of the HBA directory or driver directory then it will
   * remove those from the debugfs infrastructure as well.
   **/
  inline void
  lpfc_debugfs_terminate(struct lpfc_vport *vport)
  {
  #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
  	struct lpfc_hba   *phba = vport->phba;
  
  	if (vport->disc_trc) {
  		kfree(vport->disc_trc);
  		vport->disc_trc = NULL;
  	}
  	if (vport->debug_disc_trc) {
  		debugfs_remove(vport->debug_disc_trc); /* discovery_trace */
  		vport->debug_disc_trc = NULL;
  	}
  	if (vport->debug_nodelist) {
  		debugfs_remove(vport->debug_nodelist); /* nodelist */
  		vport->debug_nodelist = NULL;
  	}
  
  	if (vport->vport_debugfs_root) {
  		debugfs_remove(vport->vport_debugfs_root); /* vportX */
  		vport->vport_debugfs_root = NULL;
  		atomic_dec(&phba->debugfs_vport_count);
  	}
  	if (atomic_read(&phba->debugfs_vport_count) == 0) {
  
  		if (phba->debug_hbqinfo) {
  			debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */
  			phba->debug_hbqinfo = NULL;
  		}
  		if (phba->debug_dumpHBASlim) {
  			debugfs_remove(phba->debug_dumpHBASlim); /* HBASlim */
  			phba->debug_dumpHBASlim = NULL;
  		}
  		if (phba->debug_dumpHostSlim) {
  			debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */
  			phba->debug_dumpHostSlim = NULL;
  		}
  		if (phba->debug_dumpData) {
  			debugfs_remove(phba->debug_dumpData); /* dumpData */
  			phba->debug_dumpData = NULL;
  		}
  
  		if (phba->debug_dumpDif) {
  			debugfs_remove(phba->debug_dumpDif); /* dumpDif */
  			phba->debug_dumpDif = NULL;
  		}
  
  		if (phba->slow_ring_trc) {
  			kfree(phba->slow_ring_trc);
  			phba->slow_ring_trc = NULL;
  		}
  		if (phba->debug_slow_ring_trc) {
  			/* slow_ring_trace */
  			debugfs_remove(phba->debug_slow_ring_trc);
  			phba->debug_slow_ring_trc = NULL;
  		}
  
  		if (phba->hba_debugfs_root) {
  			debugfs_remove(phba->hba_debugfs_root); /* lpfcX */
  			phba->hba_debugfs_root = NULL;
  			atomic_dec(&lpfc_debugfs_hba_count);
  		}
  
  		if (atomic_read(&lpfc_debugfs_hba_count) == 0) {
  			debugfs_remove(lpfc_debugfs_root); /* lpfc */
  			lpfc_debugfs_root = NULL;
  		}
  	}
  #endif
  	return;
  }
  