[SCSI] lpfc 8.2.2 : Error messages and debugfs updates

Error messages and debugfs updates:
 - Fix up GID_FT error messages
 - Enhance debugfs with slow_ring_trace, dumpslim and nodelist information
 - Add log type (and messages) for vport state changes
 - Enhance log messages when retries ELS fail

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

9 files changed, 488 insertions, 58 deletions

diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index f8f64d6485cd..3f64c4b81b0c 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -335,7 +335,7 @@ struct lpfc_vport {
         struct dentry *debug_disc_trc;
         struct dentry *debug_nodelist;
         struct dentry *vport_debugfs_root;
-        struct lpfc_disc_trc *disc_trc;
+        struct lpfc_debugfs_trc *disc_trc;
         atomic_t disc_trc_cnt;
 #endif
 };
@@ -547,6 +547,10 @@ struct lpfc_hba {
 #ifdef CONFIG_LPFC_DEBUG_FS
         struct dentry *hba_debugfs_root;
         atomic_t debugfs_vport_count;
+        struct dentry *debug_dumpslim;
+        struct dentry *debug_slow_ring_trc;
+        struct lpfc_debugfs_trc *slow_ring_trc;
+        atomic_t slow_ring_trc_cnt;
 #endif
 
         /* Fields used for heart beat. */
diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h
index e19d1a746586..f9fdc862028a 100644
--- a/drivers/scsi/lpfc/lpfc_crtn.h
+++ b/drivers/scsi/lpfc/lpfc_crtn.h
@@ -271,6 +271,8 @@ extern void lpfc_debugfs_initialize(struct lpfc_vport *);
 extern void lpfc_debugfs_terminate(struct lpfc_vport *);
 extern void lpfc_debugfs_disc_trc(struct lpfc_vport *, int, char *, uint32_t,
         uint32_t, uint32_t);
+extern void lpfc_debugfs_slow_ring_trc(struct lpfc_hba *, char *, uint32_t,
+        uint32_t, uint32_t);
 
 /* Interface exported by fabric iocb scheduler */
 int lpfc_issue_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *);
diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c
index ae9d6f385a6c..edbebffa26cf 100644
--- a/drivers/scsi/lpfc/lpfc_ct.c
+++ b/drivers/scsi/lpfc/lpfc_ct.c
@@ -607,7 +607,25 @@ lpfc_cmpl_ct_cmd_gid_ft(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                 } else if (CTrsp->CommandResponse.bits.CmdRsp ==
                            be16_to_cpu(SLI_CT_RESPONSE_FS_RJT)) {
                         /* NameServer Rsp Error */
-                        lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
+                        if ((CTrsp->ReasonCode == SLI_CT_UNABLE_TO_PERFORM_REQ)
+                            && (CTrsp->Explanation == SLI_CT_NO_FC4_TYPES)) {
+                                lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
+                                        "%d (%d):0269 No NameServer Entries "
+                                        "Data: x%x x%x x%x x%x\n",
+                                        phba->brd_no, vport->vpi,
+                                        CTrsp->CommandResponse.bits.CmdRsp,
+                                        (uint32_t) CTrsp->ReasonCode,
+                                        (uint32_t) CTrsp->Explanation,
+                                        vport->fc_flag);
+
+                                lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_CT,
+                                "GID_FT no entry  cmd:x%x rsn:x%x exp:x%x",
+                                (uint32_t)CTrsp->CommandResponse.bits.CmdRsp,
+                                (uint32_t) CTrsp->ReasonCode,
+                                (uint32_t) CTrsp->Explanation);
+                        }
+                        else {
+                                lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
                                         "%d (%d):0240 NameServer Rsp Error "
                                         "Data: x%x x%x x%x x%x\n",
                                         phba->brd_no, vport->vpi,
@@ -616,11 +634,13 @@ lpfc_cmpl_ct_cmd_gid_ft(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                                         (uint32_t) CTrsp->Explanation,
                                         vport->fc_flag);
 
-                        lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_CT,
+                                lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_CT,
                                 "GID_FT rsp err1  cmd:x%x rsn:x%x exp:x%x",
                                 (uint32_t)CTrsp->CommandResponse.bits.CmdRsp,
                                 (uint32_t) CTrsp->ReasonCode,
                                 (uint32_t) CTrsp->Explanation);
+                        }
+
 
                 } else {
                         /* NameServer Rsp Error */
@@ -696,7 +716,7 @@ lpfc_cmpl_ct_cmd_gff_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                         if ((fbits & FC4_FEATURE_INIT) &&
                             !(fbits & FC4_FEATURE_TARGET)) {
                                 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
-                                                "%d (%d):0245 Skip x%x GFF "
+                                                "%d (%d):0270 Skip x%x GFF "
                                                 "NameServer Rsp Data: (init) "
                                                 "x%x x%x\n", phba->brd_no,
                                                 vport->vpi, did, fbits,
diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c
index 673cfe11cc2b..2310a2d1d8ce 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.c
+++ b/drivers/scsi/lpfc/lpfc_debugfs.c
@@ -75,11 +75,18 @@ static int lpfc_debugfs_enable = 0;
 module_param(lpfc_debugfs_enable, int, 0);
 MODULE_PARM_DESC(lpfc_debugfs_enable, "Enable debugfs services");
 
-static int lpfc_debugfs_max_disc_trc = 0;  /* This MUST be a power of 2 */
+/* This MUST be a power of 2 */
+static int lpfc_debugfs_max_disc_trc = 0;
 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 = 0;
+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 = 0;
 module_param(lpfc_debugfs_mask_disc_trc, int, 0);
 MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc,
@@ -87,19 +94,22 @@ MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc,
 
 #include <linux/debugfs.h>
 
-/* size of discovery_trace output line */
-#define LPFC_DISC_TRC_ENTRY_SIZE 80
+/* 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
 
+/* dump_slim output buffer size */
+#define LPFC_DUMPSLIM_SIZE 4096
+
 struct lpfc_debug {
         char *buffer;
         int  len;
 };
 
-atomic_t lpfc_debugfs_disc_trc_cnt = ATOMIC_INIT(0);
+atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0);
 unsigned long lpfc_debugfs_start_time = 0L;
 
 static int
@@ -107,8 +117,8 @@ lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size)
 {
         int i, index, len, enable;
         uint32_t ms;
-        struct lpfc_disc_trc *dtp;
-        char buffer[80];
+        struct lpfc_debugfs_trc *dtp;
+        char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE];
 
 
         enable = lpfc_debugfs_enable;
@@ -122,7 +132,8 @@ lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size)
                 if (!dtp->fmt)
                         continue;
                 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
-                snprintf(buffer, 80, "%010d:%010d ms:%s\n",
+                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);
@@ -132,7 +143,50 @@ lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size)
                 if (!dtp->fmt)
                         continue;
                 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
-                snprintf(buffer, 80, "%010d:%010d ms:%s\n",
+                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_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);
@@ -143,6 +197,95 @@ lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size)
 }
 
 static int
+lpfc_debugfs_dumpslim_data(struct lpfc_hba *phba, char *buf, int size)
+{
+        int len = 0;
+        int cnt, 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;
+
+        cnt = LPFC_DUMPSLIM_SIZE;
+        off = 0;
+        spin_lock_irq(&phba->hbalock);
+
+        len +=  snprintf(buf+len, size-len, "SLIM Mailbox\n");
+        ptr = (uint32_t *)phba->slim2p;
+        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->slim2p->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));
+        }
+
+        pgpp = (struct lpfc_pgp *)&phba->slim2p->mbx.us.s3_pgp.port;
+        pring = &psli->ring[0];
+        len +=  snprintf(buf+len, size-len,
+                "Ring 0: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x)  "
+                "RSP PutInx:%d Max:%d\n",
+                pgpp->cmdGetInx, pring->numCiocb,
+                pring->next_cmdidx, pring->local_getidx, pring->flag,
+                pgpp->rspPutInx, pring->numRiocb);
+        pgpp++;
+
+        pring = &psli->ring[1];
+        len +=  snprintf(buf+len, size-len,
+                "Ring 1: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x)  "
+                "RSP PutInx:%d Max:%d\n",
+                pgpp->cmdGetInx, pring->numCiocb,
+                pring->next_cmdidx, pring->local_getidx, pring->flag,
+                pgpp->rspPutInx, pring->numRiocb);
+        pgpp++;
+
+        pring = &psli->ring[2];
+        len +=  snprintf(buf+len, size-len,
+                "Ring 2: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x)  "
+                "RSP PutInx:%d Max:%d\n",
+                pgpp->cmdGetInx, pring->numCiocb,
+                pring->next_cmdidx, pring->local_getidx, pring->flag,
+                pgpp->rspPutInx, pring->numRiocb);
+        pgpp++;
+
+        pring = &psli->ring[3];
+        len +=  snprintf(buf+len, size-len,
+                "Ring 3: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x)  "
+                "RSP PutInx:%d Max:%d\n",
+                pgpp->cmdGetInx, pring->numCiocb,
+                pring->next_cmdidx, pring->local_getidx, pring->flag,
+                pgpp->rspPutInx, pring->numRiocb);
+
+
+        ptr = (uint32_t *)&phba->slim2p->mbx.us.s3_pgp.hbq_get;
+        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;
+}
+
+static int
 lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size)
 {
         int len = 0;
@@ -204,7 +347,7 @@ lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size)
                 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");
+                        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)
@@ -213,7 +356,9 @@ lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size)
                         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, "FCP_INITIATOR ");
+                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);
@@ -227,7 +372,7 @@ lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt,
         uint32_t data1, uint32_t data2, uint32_t data3)
 {
 #ifdef CONFIG_LPFC_DEBUG_FS
-        struct lpfc_disc_trc *dtp;
+        struct lpfc_debugfs_trc *dtp;
         int index;
 
         if (!(lpfc_debugfs_mask_disc_trc & mask))
@@ -244,7 +389,32 @@ lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt,
         dtp->data1 = data1;
         dtp->data2 = data2;
         dtp->data3 = data3;
-        dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_disc_trc_cnt);
+        dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
+        dtp->jif = jiffies;
+#endif
+        return;
+}
+
+inline void
+lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt,
+        uint32_t data1, uint32_t data2, uint32_t data3)
+{
+#ifdef CONFIG_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;
@@ -269,7 +439,7 @@ lpfc_debugfs_disc_trc_open(struct inode *inode, struct file *file)
                 goto out;
 
         /* Round to page boundry */
-        size =  (lpfc_debugfs_max_disc_trc * LPFC_DISC_TRC_ENTRY_SIZE);
+        size =  (lpfc_debugfs_max_disc_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
         size = PAGE_ALIGN(size);
 
         debug->buffer = kmalloc(size, GFP_KERNEL);
@@ -287,6 +457,68 @@ out:
 }
 
 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 boundry */
+        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;
+}
+
+static int
+lpfc_debugfs_dumpslim_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 boundry */
+        debug->buffer = kmalloc(LPFC_DUMPSLIM_SIZE, GFP_KERNEL);
+        if (!debug->buffer) {
+                kfree(debug);
+                goto out;
+        }
+
+        debug->len = lpfc_debugfs_dumpslim_data(phba, debug->buffer,
+                LPFC_DUMPSLIM_SIZE);
+        file->private_data = debug;
+
+        rc = 0;
+out:
+        return rc;
+}
+
+static int
 lpfc_debugfs_nodelist_open(struct inode *inode, struct file *file)
 {
         struct lpfc_vport *vport = inode->i_private;
@@ -372,6 +604,24 @@ static struct file_operations lpfc_debugfs_op_nodelist = {
         .release =      lpfc_debugfs_release,
 };
 
+#undef lpfc_debugfs_op_dumpslim
+static struct file_operations lpfc_debugfs_op_dumpslim = {
+        .owner =        THIS_MODULE,
+        .open =         lpfc_debugfs_dumpslim_open,
+        .llseek =       lpfc_debugfs_lseek,
+        .read =         lpfc_debugfs_read,
+        .release =      lpfc_debugfs_release,
+};
+
+#undef lpfc_debugfs_op_slow_ring_trc
+static 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
@@ -387,60 +637,142 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport)
         if (!lpfc_debugfs_enable)
                 return;
 
-        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);
-                }
-        }
-
+        /* 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)
+                if (!lpfc_debugfs_root) {
+                        lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "%d:0409 Cannot create debugfs root (lpfc)",
+                                phba->brd_no);
                         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)
+                if (!phba->hba_debugfs_root) {
+                        lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "%d:0409 Cannot create debugfs hba (lpfc%d)",
+                                phba->brd_no, phba->brd_no);
                         goto debug_failed;
+                }
                 atomic_inc(&lpfc_debugfs_hba_count);
                 atomic_set(&phba->debugfs_vport_count, 0);
+
+                /* Setup dumpslim */
+                snprintf(name, sizeof(name), "dumpslim");
+                phba->debug_dumpslim =
+                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
+                                 phba->hba_debugfs_root,
+                                 phba, &lpfc_debugfs_op_dumpslim);
+                if (!phba->debug_dumpslim) {
+                        lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                        "%d:0409 Cannot create debugfs dumpslim (lpfc%d)",
+                                phba->brd_no, phba->brd_no);
+                        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_slow_ring_trc change to %d\n",
+                                        lpfc_debugfs_max_slow_ring_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_log(phba, KERN_ERR, LOG_INIT,
+                                "%d:0409 Cannot create debugfs "
+                                "slow_ring_trace (lpfc%d)",
+                                phba->brd_no, phba->brd_no);
+                        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_log(phba, KERN_ERR, LOG_INIT,
+                                "%d:0409 Cannot create debugfs "
+                                "slow_ring buffer (lpfc%d)",
+                                phba->brd_no, phba->brd_no);
+                                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)
+                if (!vport->vport_debugfs_root) {
+                        lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "%d:0409 Cant create debugfs vport%d (lpfc%d)",
+                                phba->brd_no, vport->vpi, phba->brd_no);
                         goto debug_failed;
+                }
                 atomic_inc(&phba->debugfs_vport_count);
         }
 
-        if (!lpfc_debugfs_start_time)
-                lpfc_debugfs_start_time = jiffies;
+        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 = kmalloc(
-                (sizeof(struct lpfc_disc_trc) * lpfc_debugfs_max_disc_trc),
+                (sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc),
                 GFP_KERNEL);
 
-        if (!vport->disc_trc)
+        if (!vport->disc_trc) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                        "%d:0409 Cannot create debugfs "
+                        "vport%d disc trace buffer (lpfc%d)",
+                        phba->brd_no, vport->vpi, phba->brd_no);
                 goto debug_failed;
+        }
+        atomic_set(&vport->disc_trc_cnt, 0);
         memset(vport->disc_trc, 0,
-                (sizeof(struct lpfc_disc_trc) * lpfc_debugfs_max_disc_trc));
+                (sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc));
 
         snprintf(name, sizeof(name), "discovery_trace");
         vport->debug_disc_trc =
@@ -449,8 +781,9 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport)
                                  vport, &lpfc_debugfs_op_disc_trc);
         if (!vport->debug_disc_trc) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
-                                "%d:0409 Cannot create debugfs",
-                                phba->brd_no);
+                        "%d:0409 Cannot create debugfs "
+                        "vport%d discovery_trace (lpfc%d)",
+                        phba->brd_no, vport->vpi, phba->brd_no);
                 goto debug_failed;
         }
         snprintf(name, sizeof(name), "nodelist");
@@ -460,8 +793,8 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport)
                                  vport, &lpfc_debugfs_op_nodelist);
         if (!vport->debug_nodelist) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
-                                "%d:0409 Cannot create debugfs",
-                                phba->brd_no);
+                        "%d:0409 Cant create debugfs vport%d nodelist (lpfc%d)",
+                        phba->brd_no, vport->vpi, phba->brd_no);
                 goto debug_failed;
         }
 debug_failed:
@@ -488,21 +821,41 @@ lpfc_debugfs_terminate(struct lpfc_vport *vport)
                 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) {
-                debugfs_remove(vport->phba->hba_debugfs_root); /* lpfcX */
-                vport->phba->hba_debugfs_root = NULL;
-                atomic_dec(&lpfc_debugfs_hba_count);
+
+                if (phba->debug_dumpslim) {
+                        debugfs_remove(phba->debug_dumpslim); /* dumpslim */
+                        phba->debug_dumpslim = 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;
 }
 
 
diff --git a/drivers/scsi/lpfc/lpfc_debugfs.h b/drivers/scsi/lpfc/lpfc_debugfs.h
index fffb678426a4..31e86a55391d 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.h
+++ b/drivers/scsi/lpfc/lpfc_debugfs.h
@@ -22,7 +22,7 @@
 #define _H_LPFC_DEBUG_FS
 
 #ifdef CONFIG_LPFC_DEBUG_FS
-struct lpfc_disc_trc {
+struct lpfc_debugfs_trc {
         char *fmt;
         uint32_t data1;
         uint32_t data2;
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index 33fbc1666946..68fc975d4e52 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -2033,12 +2033,11 @@ lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
         }
 
         /* No retry ELS command <elsCmd> to remote NPORT <did> */
-        lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
-                        "%d (%d):0108 No retry ELS command x%x to remote "
-                        "NPORT x%x Data: x%x\n",
-                        phba->brd_no, vport->vpi,
-                        cmd, did, cmdiocb->retry);
-
+        lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+                         "0108 No retry ELS command x%x to remote "
+                         "NPORT x%x Retried:%d Error:x%x/%x\n",
+                         cmd, did, cmdiocb->retry, irsp->ulpStatus,
+                         irsp->un.ulpWord[4]);
         return 0;
 }
 
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index f2f4639eab59..ea27bbb81552 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -426,10 +426,19 @@ lpfc_work_done(struct lpfc_hba *phba)
                 spin_lock_irq(&phba->hbalock);
                 control = readl(phba->HCregaddr);
                 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
+                        lpfc_debugfs_slow_ring_trc(phba,
+                                "WRK Enable ring: cntl:x%x hacopy:x%x",
+                                control, ha_copy, 0);
+
                         control |= (HC_R0INT_ENA << LPFC_ELS_RING);
                         writel(control, phba->HCregaddr);
                         readl(phba->HCregaddr); /* flush */
                 }
+                else {
+                        lpfc_debugfs_slow_ring_trc(phba,
+                                "WRK Ring ok:     cntl:x%x hacopy:x%x",
+                                control, ha_copy, 0);
+                }
                 spin_unlock_irq(&phba->hbalock);
         }
         lpfc_work_list_done(phba);
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index f4d5a6b00fde..14fe6b000b59 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -395,6 +395,14 @@ lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
          */
         nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0;
 
+        if (pring->ringno == LPFC_ELS_RING) {
+                lpfc_debugfs_slow_ring_trc(phba,
+                        "IOCB cmd ring:   wd4:x%08x wd6:x%08x wd7:x%08x",
+                        *(((uint32_t *) &nextiocb->iocb) + 4),
+                        *(((uint32_t *) &nextiocb->iocb) + 6),
+                        *(((uint32_t *) &nextiocb->iocb) + 7));
+        }
+
         /*
          * Issue iocb command to adapter
          */
@@ -1542,6 +1550,14 @@ lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba,
                 if (++pring->rspidx >= portRspMax)
                         pring->rspidx = 0;
 
+                if (pring->ringno == LPFC_ELS_RING) {
+                        lpfc_debugfs_slow_ring_trc(phba,
+                        "IOCB rsp ring:   wd4:x%08x wd6:x%08x wd7:x%08x",
+                                *(((uint32_t *) irsp) + 4),
+                                *(((uint32_t *) irsp) + 6),
+                                *(((uint32_t *) irsp) + 7));
+                }
+
                 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
 
                 if (list_empty(&(pring->iocb_continueq))) {
@@ -3850,12 +3866,33 @@ lpfc_intr_handler(int irq, void *dev_id)
                         if (status & HA_RXMASK) {
                                 spin_lock(&phba->hbalock);
                                 control = readl(phba->HCregaddr);
+
+                                lpfc_debugfs_slow_ring_trc(phba,
+                                "ISR slow ring:   ctl:x%x stat:x%x isrcnt:x%x",
+                                control, status,
+                                (uint32_t)phba->sli.slistat.sli_intr);
+
                                 if (control & (HC_R0INT_ENA << LPFC_ELS_RING)) {
+                                        lpfc_debugfs_slow_ring_trc(phba,
+                                                "ISR Disable ring:"
+                                                "pwork:x%x hawork:x%x wait:x%x",
+                                                phba->work_ha, work_ha_copy,
+                                                (uint32_t)((unsigned long)
+                                                phba->work_wait));
+
                                         control &=
                                             ~(HC_R0INT_ENA << LPFC_ELS_RING);
                                         writel(control, phba->HCregaddr);
                                         readl(phba->HCregaddr); /* flush */
                                 }
+                                else {
+                                        lpfc_debugfs_slow_ring_trc(phba,
+                                                "ISR slow ring:   pwork:"
+                                                "x%x hawork:x%x wait:x%x",
+                                                phba->work_ha, work_ha_copy,
+                                                (uint32_t)((unsigned long)
+                                                phba->work_wait));
+                                }
                                 spin_unlock(&phba->hbalock);
                         }
                 }
diff --git a/drivers/scsi/lpfc/lpfc_vport.c b/drivers/scsi/lpfc/lpfc_vport.c
index 85797dbf5478..c5918a643014 100644
--- a/drivers/scsi/lpfc/lpfc_vport.c
+++ b/drivers/scsi/lpfc/lpfc_vport.c
@@ -326,6 +326,8 @@ lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
         rc = VPORT_OK;
 
 out:
+        lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
+                        "1825 Vport Created.\n");
         lpfc_host_attrib_init(lpfc_shost_from_vport(vport));
 error_out:
         return rc;
@@ -371,6 +373,8 @@ disable_vport(struct fc_vport *fc_vport)
         lpfc_mbx_unreg_vpi(vport);
 
         lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
+        lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
+                         "1826 Vport Disabled.\n");
         return VPORT_OK;
 }
 
@@ -408,7 +412,8 @@ enable_vport(struct fc_vport *fc_vport)
         } else {
                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
         }
-
+        lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
+                         "1827 Vport Enabled.\n");
         return VPORT_OK;
 }
 
@@ -511,7 +516,8 @@ skip_logo:
         spin_lock_irq(&phba->hbalock);
         list_del_init(&vport->listentry);
         spin_unlock_irq(&phba->hbalock);
-
+        lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
+                         "1828 Vport Deleted.\n");
         rc = VPORT_OK;
 out:
         scsi_host_put(shost);