/******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Fibre Channel Host Bus Adapters. * * Copyright (C) 2007-2011 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #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: * /sys/kernel/debug/lpfc/fnX/vportY * where X is the lpfc hba function 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, S_IRUGO); 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, S_IRUGO); 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, S_IRUGO); 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, S_IRUGO); MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc, "Set debugfs discovery trace mask"); #include static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0); static unsigned long lpfc_debugfs_start_time = 0L; /* iDiag */ static struct lpfc_idiag idiag; /** * 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; jentry_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; } /* * iDiag debugfs file access methods */ /* * iDiag PCI config space register access methods: * * The PCI config space register accessees of read, write, read-modify-write * for set bits, and read-modify-write for clear bits to SLI4 PCI functions * are provided. In the proper SLI4 PCI function's debugfs iDiag directory, * * /sys/kernel/debug/lpfc/fn<#>/iDiag * * the access is through the debugfs entry pciCfg: * * 1. For PCI config space register read access, there are two read methods: * A) read a single PCI config space register in the size of a byte * (8 bits), a word (16 bits), or a dword (32 bits); or B) browse through * the 4K extended PCI config space. * * A) Read a single PCI config space register consists of two steps: * * Step-1: Set up PCI config space register read command, the command * syntax is, * * echo 1 > pciCfg * * where, 1 is the iDiag command for PCI config space read, is the * offset from the beginning of the device's PCI config space to read from, * and is the size of PCI config space register data to read back, * it will be 1 for reading a byte (8 bits), 2 for reading a word (16 bits * or 2 bytes), or 4 for reading a dword (32 bits or 4 bytes). * * Setp-2: Perform the debugfs read operation to execute the idiag command * set up in Step-1, * * cat pciCfg * * Examples: * To read PCI device's vendor-id and device-id from PCI config space, * * echo 1 0 4 > pciCfg * cat pciCfg * * To read PCI device's currnt command from config space, * * echo 1 4 2 > pciCfg * cat pciCfg * * B) Browse through the entire 4K extended PCI config space also consists * of two steps: * * Step-1: Set up PCI config space register browsing command, the command * syntax is, * * echo 1 0 4096 > pciCfg * * where, 1 is the iDiag command for PCI config space read, 0 must be used * as the offset for PCI config space register browse, and 4096 must be * used as the count for PCI config space register browse. * * Step-2: Repeately issue the debugfs read operation to browse through * the entire PCI config space registers: * * cat pciCfg * cat pciCfg * cat pciCfg * ... * * When browsing to the end of the 4K PCI config space, the browse method * shall wrap around to start reading from beginning again, and again... * * 2. For PCI config space register write access, it supports a single PCI * config space register write in the size of a byte (8 bits), a word * (16 bits), or a dword (32 bits). The command syntax is, * * echo 2 > pciCfg * * where, 2 is the iDiag command for PCI config space write, is * the offset from the beginning of the device's PCI config space to write * into, is the size of data to write into the PCI config space, * it will be 1 for writing a byte (8 bits), 2 for writing a word (16 bits * or 2 bytes), or 4 for writing a dword (32 bits or 4 bytes), and * is the data to be written into the PCI config space register at the * offset. * * Examples: * To disable PCI device's interrupt assertion, * * 1) Read in device's PCI config space register command field : * * echo 1 4 2 > pciCfg * cat pciCfg * * 2) Set bit 10 (Interrupt Disable bit) in the : * * = | (1 < 10) * * 3) Write the modified command back: * * echo 2 4 2 > pciCfg * * 3. For PCI config space register set bits access, it supports a single PCI * config space register set bits in the size of a byte (8 bits), a word * (16 bits), or a dword (32 bits). The command syntax is, * * echo 3 > pciCfg * * where, 3 is the iDiag command for PCI config space set bits, is * the offset from the beginning of the device's PCI config space to set * bits into, is the size of the bitmask to set into the PCI config * space, it will be 1 for setting a byte (8 bits), 2 for setting a word * (16 bits or 2 bytes), or 4 for setting a dword (32 bits or 4 bytes), and * is the bitmask, indicating the bits to be set into the PCI * config space register at the offset. The logic performed to the content * of the PCI config space register, regval, is, * * regval |= * * 4. For PCI config space register clear bits access, it supports a single * PCI config space register clear bits in the size of a byte (8 bits), * a word (16 bits), or a dword (32 bits). The command syntax is, * * echo 4 > pciCfg * * where, 4 is the iDiag command for PCI config space clear bits, * is the offset from the beginning of the device's PCI config space to * clear bits from, is the size of the bitmask to set into the PCI * config space, it will be 1 for setting a byte (8 bits), 2 for setting * a word(16 bits or 2 bytes), or 4 for setting a dword (32 bits or 4 * bytes), and is the bitmask, indicating the bits to be cleared * from the PCI config space register at the offset. the logic performed * to the content of the PCI config space register, regval, is, * * regval &= ~ * * Note, for all single register read, write, set bits, or clear bits access, * the offset () must be aligned with the size of the data: * * For data size of byte (8 bits), the offset must be aligned to the byte * boundary; for data size of word (16 bits), the offset must be aligned * to the word boundary; while for data size of dword (32 bits), the offset * must be aligned to the dword boundary. Otherwise, the interface will * return the error: * * "-bash: echo: write error: Invalid argument". * * For example: * * echo 1 2 4 > pciCfg * -bash: echo: write error: Invalid argument * * Note also, all of the numbers in the command fields for all read, write, * set bits, and clear bits PCI config space register command fields can be * either decimal or hex. * * For example, * echo 1 0 4096 > pciCfg * * will be the same as * echo 1 0 0x1000 > pciCfg * * And, * echo 2 155 1 10 > pciCfg * * will be * echo 2 0x9b 1 0xa > pciCfg */ /** * lpfc_idiag_cmd_get - Get and parse idiag debugfs comands from user space * @buf: The pointer to the user space buffer. * @nbytes: The number of bytes in the user space buffer. * @idiag_cmd: pointer to the idiag command struct. * * This routine reads data from debugfs user space buffer and parses the * buffer for getting the idiag command and arguments. The while space in * between the set of data is used as the parsing separator. * * This routine returns 0 when successful, it returns proper error code * back to the user space in error conditions. */ static int lpfc_idiag_cmd_get(const char __user *buf, size_t nbytes, struct lpfc_idiag_cmd *idiag_cmd) { char mybuf[64]; char *pbuf, *step_str; int bsize, i; /* Protect copy from user */ if (!access_ok(VERIFY_READ, buf, nbytes)) return -EFAULT; memset(mybuf, 0, sizeof(mybuf)); memset(idiag_cmd, 0, sizeof(*idiag_cmd)); bsize = min(nbytes, (sizeof(mybuf)-1)); if (copy_from_user(mybuf, buf, bsize)) return -EFAULT; pbuf = &mybuf[0]; step_str = strsep(&pbuf, "\t "); /* The opcode must present */ if (!step_str) return -EINVAL; idiag_cmd->opcode = simple_strtol(step_str, NULL, 0); if (idiag_cmd->opcode == 0) return -EINVAL; for (i = 0; i < LPFC_IDIAG_CMD_DATA_SIZE; i++) { step_str = strsep(&pbuf, "\t "); if (!step_str) return 0; idiag_cmd->data[i] = simple_strtol(step_str, NULL, 0); } return 0; } /** * lpfc_idiag_open - idiag open debugfs * @inode: The inode pointer that contains a pointer to phba. * @file: The file pointer to attach the file operation. * * Description: * This routine is the entry point for the debugfs open file operation. It * gets the reference to phba from the i_private field in @inode, it then * allocates buffer for the file operation, performs the necessary PCI config * space read into the allocated buffer according to the idiag user command * setup, and then returns a pointer to buffer 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_idiag_open(struct inode *inode, struct file *file) { struct lpfc_debug *debug; debug = kmalloc(sizeof(*debug), GFP_KERNEL); if (!debug) return -ENOMEM; debug->i_private = inode->i_private; debug->buffer = NULL; file->private_data = debug; return 0; } /** * lpfc_idiag_release - Release idiag access file operation * @inode: The inode pointer that contains a vport pointer. (unused) * @file: The file pointer that contains the buffer to release. * * Description: * This routine is the generic release routine for the idiag access file * operation, it frees the buffer that was allocated when the debugfs file * was opened. * * Returns: * This function returns zero. **/ static int lpfc_idiag_release(struct inode *inode, struct file *file) { struct lpfc_debug *debug = file->private_data; /* Free the buffers to the file operation */ kfree(debug->buffer); kfree(debug); return 0; } /** * lpfc_idiag_cmd_release - Release idiag cmd access file operation * @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. It also reset the fields in the idiag command struct in the * case the command is not continuous browsing of the data structure. * * Returns: * This function returns zero. **/ static int lpfc_idiag_cmd_release(struct inode *inode, struct file *file) { struct lpfc_debug *debug = file->private_data; /* Read PCI config register, if not read all, clear command fields */ if ((debug->op == LPFC_IDIAG_OP_RD) && (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD)) if ((idiag.cmd.data[1] == sizeof(uint8_t)) || (idiag.cmd.data[1] == sizeof(uint16_t)) || (idiag.cmd.data[1] == sizeof(uint32_t))) memset(&idiag, 0, sizeof(idiag)); /* Write PCI config register, clear command fields */ if ((debug->op == LPFC_IDIAG_OP_WR) && (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)) memset(&idiag, 0, sizeof(idiag)); /* Free the buffers to the file operation */ kfree(debug->buffer); kfree(debug); return 0; } /** * lpfc_idiag_pcicfg_read - idiag debugfs read pcicfg * @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 the @phba pci config space according to the * idiag command, and copies to user @buf. Depending on the PCI config space * read command setup, it does either a single register read of a byte * (8 bits), a word (16 bits), or a dword (32 bits) or browsing through all * registers from the 4K extended PCI config space. * * 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_idiag_pcicfg_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) { struct lpfc_debug *debug = file->private_data; struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; int offset_label, offset, len = 0, index = LPFC_PCI_CFG_RD_SIZE; int where, count; char *pbuffer; struct pci_dev *pdev; uint32_t u32val; uint16_t u16val; uint8_t u8val; pdev = phba->pcidev; if (!pdev) return 0; /* This is a user read operation */ debug->op = LPFC_IDIAG_OP_RD; if (!debug->buffer) debug->buffer = kmalloc(LPFC_PCI_CFG_SIZE, GFP_KERNEL); if (!debug->buffer) return 0; pbuffer = debug->buffer; if (*ppos) return 0; if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) { where = idiag.cmd.data[0]; count = idiag.cmd.data[1]; } else return 0; /* Read single PCI config space register */ switch (count) { case SIZE_U8: /* byte (8 bits) */ pci_read_config_byte(pdev, where, &u8val); len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, "%03x: %02x\n", where, u8val); break; case SIZE_U16: /* word (16 bits) */ pci_read_config_word(pdev, where, &u16val); len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, "%03x: %04x\n", where, u16val); break; case SIZE_U32: /* double word (32 bits) */ pci_read_config_dword(pdev, where, &u32val); len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, "%03x: %08x\n", where, u32val); break; case LPFC_PCI_CFG_SIZE: /* browse all */ goto pcicfg_browse; break; default: /* illegal count */ len = 0; break; } return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); pcicfg_browse: /* Browse all PCI config space registers */ offset_label = idiag.offset.last_rd; offset = offset_label; /* Read PCI config space */ len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, "%03x: ", offset_label); while (index > 0) { pci_read_config_dword(pdev, offset, &u32val); len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, "%08x ", u32val); offset += sizeof(uint32_t); index -= sizeof(uint32_t); if (!index) len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, "\n"); else if (!(index % (8 * sizeof(uint32_t)))) { offset_label += (8 * sizeof(uint32_t)); len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, "\n%03x: ", offset_label); } } /* Set up the offset for next portion of pci cfg read */ idiag.offset.last_rd += LPFC_PCI_CFG_RD_SIZE; if (idiag.offset.last_rd >= LPFC_PCI_CFG_SIZE) idiag.offset.last_rd = 0; return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); } /** * lpfc_idiag_pcicfg_write - Syntax check and set up idiag pcicfg commands * @file: The file pointer to read from. * @buf: The buffer to copy the user data from. * @nbytes: The number of bytes to get. * @ppos: The position in the file to start reading from. * * This routine get the debugfs idiag command struct from user space and * then perform the syntax check for PCI config space read or write command * accordingly. In the case of PCI config space read command, it sets up * the command in the idiag command struct for the debugfs read operation. * In the case of PCI config space write operation, it executes the write * operation into the PCI config space accordingly. * * It returns the @nbytges passing in from debugfs user space when successful. * In case of error conditions, it returns proper error code back to the user * space. */ static ssize_t lpfc_idiag_pcicfg_write(struct file *file, const char __user *buf, size_t nbytes, loff_t *ppos) { struct lpfc_debug *debug = file->private_data; struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; uint32_t where, value, count; uint32_t u32val; uint16_t u16val; uint8_t u8val; struct pci_dev *pdev; int rc; pdev = phba->pcidev; if (!pdev) return -EFAULT; /* This is a user write operation */ debug->op = LPFC_IDIAG_OP_WR; rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd); if (rc) return rc; if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) { /* Read command from PCI config space, set up command fields */ where = idiag.cmd.data[0]; count = idiag.cmd.data[1]; if (count == LPFC_PCI_CFG_SIZE) { if (where != 0) goto error_out; } else if ((count != sizeof(uint8_t)) && (count != sizeof(uint16_t)) && (count != sizeof(uint32_t))) goto error_out; if (count == sizeof(uint8_t)) { if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t)) goto error_out; if (where % sizeof(uint8_t)) goto error_out; } if (count == sizeof(uint16_t)) { if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t)) goto error_out; if (where % sizeof(uint16_t)) goto error_out; } if (count == sizeof(uint32_t)) { if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t)) goto error_out; if (where % sizeof(uint32_t)) goto error_out; } } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR || idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST || idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) { /* Write command to PCI config space, read-modify-write */ where = idiag.cmd.data[0]; count = idiag.cmd.data[1]; value = idiag.cmd.data[2]; /* Sanity checks */ if ((count != sizeof(uint8_t)) && (count != sizeof(uint16_t)) && (count != sizeof(uint32_t))) goto error_out; if (count == sizeof(uint8_t)) { if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t)) goto error_out; if (where % sizeof(uint8_t)) goto error_out; if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR) pci_write_config_byte(pdev, where, (uint8_t)value); if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) { rc = pci_read_config_byte(pdev, where, &u8val); if (!rc) { u8val |= (uint8_t)value; pci_write_config_byte(pdev, where, u8val); } } if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) { rc = pci_read_config_byte(pdev, where, &u8val); if (!rc) { u8val &= (uint8_t)(~value); pci_write_config_byte(pdev, where, u8val); } } } if (count == sizeof(uint16_t)) { if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t)) goto error_out; if (where % sizeof(uint16_t)) goto error_out; if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR) pci_write_config_word(pdev, where, (uint16_t)value); if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) { rc = pci_read_config_word(pdev, where, &u16val); if (!rc) { u16val |= (uint16_t)value; pci_write_config_word(pdev, where, u16val); } } if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) { rc = pci_read_config_word(pdev, where, &u16val); if (!rc) { u16val &= (uint16_t)(~value); pci_write_config_word(pdev, where, u16val); } } } if (count == sizeof(uint32_t)) { if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t)) goto error_out; if (where % sizeof(uint32_t)) goto error_out; if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR) pci_write_config_dword(pdev, where, value); if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) { rc = pci_read_config_dword(pdev, where, &u32val); if (!rc) { u32val |= value; pci_write_config_dword(pdev, where, u32val); } } if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) { rc = pci_read_config_dword(pdev, where, &u32val); if (!rc) { u32val &= ~value; pci_write_config_dword(pdev, where, u32val); } } } } else /* All other opecodes are illegal for now */ goto error_out; return nbytes; error_out: memset(&idiag, 0, sizeof(idiag)); return -EINVAL; } /** * lpfc_idiag_queinfo_read - idiag debugfs read queue information * @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 the @phba SLI4 PCI function queue information, * and copies to user @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_idiag_queinfo_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) { struct lpfc_debug *debug = file->private_data; struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; int len = 0, fcp_qidx; char *pbuffer; if (!debug->buffer) debug->buffer = kmalloc(LPFC_QUE_INFO_GET_BUF_SIZE, GFP_KERNEL); if (!debug->buffer) return 0; pbuffer = debug->buffer; if (*ppos) return 0; /* Get slow-path event queue information */ len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "Slow-path EQ information:\n"); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tID [%02d], EQE-COUNT [%04d], " "HOST-INDEX [%04x], PORT-INDEX [%04x]\n\n", phba->sli4_hba.sp_eq->queue_id, phba->sli4_hba.sp_eq->entry_count, phba->sli4_hba.sp_eq->host_index, phba->sli4_hba.sp_eq->hba_index); /* Get fast-path event queue information */ len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "Fast-path EQ information:\n"); for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++) { len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tID [%02d], EQE-COUNT [%04d], " "HOST-INDEX [%04x], PORT-INDEX [%04x]\n", phba->sli4_hba.fp_eq[fcp_qidx]->queue_id, phba->sli4_hba.fp_eq[fcp_qidx]->entry_count, phba->sli4_hba.fp_eq[fcp_qidx]->host_index, phba->sli4_hba.fp_eq[fcp_qidx]->hba_index); } len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n"); /* Get mailbox complete queue information */ len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "Mailbox CQ information:\n"); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\t\tAssociated EQ-ID [%02d]:\n", phba->sli4_hba.mbx_cq->assoc_qid); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tID [%02d], CQE-COUNT [%04d], " "HOST-INDEX [%04x], PORT-INDEX [%04x]\n\n", phba->sli4_hba.mbx_cq->queue_id, phba->sli4_hba.mbx_cq->entry_count, phba->sli4_hba.mbx_cq->host_index, phba->sli4_hba.mbx_cq->hba_index); /* Get slow-path complete queue information */ len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "Slow-path CQ information:\n"); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\t\tAssociated EQ-ID [%02d]:\n", phba->sli4_hba.els_cq->assoc_qid); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tID [%02d], CQE-COUNT [%04d], " "HOST-INDEX [%04x], PORT-INDEX [%04x]\n\n", phba->sli4_hba.els_cq->queue_id, phba->sli4_hba.els_cq->entry_count, phba->sli4_hba.els_cq->host_index, phba->sli4_hba.els_cq->hba_index); /* Get fast-path complete queue information */ len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "Fast-path CQ information:\n"); for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++) { len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\t\tAssociated EQ-ID [%02d]:\n", phba->sli4_hba.fcp_cq[fcp_qidx]->assoc_qid); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tID [%02d], EQE-COUNT [%04d], " "HOST-INDEX [%04x], PORT-INDEX [%04x]\n", phba->sli4_hba.fcp_cq[fcp_qidx]->queue_id, phba->sli4_hba.fcp_cq[fcp_qidx]->entry_count, phba->sli4_hba.fcp_cq[fcp_qidx]->host_index, phba->sli4_hba.fcp_cq[fcp_qidx]->hba_index); } len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n"); /* Get mailbox queue information */ len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "Mailbox MQ information:\n"); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\t\tAssociated CQ-ID [%02d]:\n", phba->sli4_hba.mbx_wq->assoc_qid); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tID [%02d], MQE-COUNT [%04d], " "HOST-INDEX [%04x], PORT-INDEX [%04x]\n\n", phba->sli4_hba.mbx_wq->queue_id, phba->sli4_hba.mbx_wq->entry_count, phba->sli4_hba.mbx_wq->host_index, phba->sli4_hba.mbx_wq->hba_index); /* Get slow-path work queue information */ len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "Slow-path WQ information:\n"); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\t\tAssociated CQ-ID [%02d]:\n", phba->sli4_hba.els_wq->assoc_qid); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tID [%02d], WQE-COUNT [%04d], " "HOST-INDEX [%04x], PORT-INDEX [%04x]\n\n", phba->sli4_hba.els_wq->queue_id, phba->sli4_hba.els_wq->entry_count, phba->sli4_hba.els_wq->host_index, phba->sli4_hba.els_wq->hba_index); /* Get fast-path work queue information */ len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "Fast-path WQ information:\n"); for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++) { len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\t\tAssociated CQ-ID [%02d]:\n", phba->sli4_hba.fcp_wq[fcp_qidx]->assoc_qid); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tID [%02d], WQE-COUNT [%04d], " "HOST-INDEX [%04x], PORT-INDEX [%04x]\n", phba->sli4_hba.fcp_wq[fcp_qidx]->queue_id, phba->sli4_hba.fcp_wq[fcp_qidx]->entry_count, phba->sli4_hba.fcp_wq[fcp_qidx]->host_index, phba->sli4_hba.fcp_wq[fcp_qidx]->hba_index); } len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n"); /* Get receive queue information */ len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "Slow-path RQ information:\n"); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\t\tAssociated CQ-ID [%02d]:\n", phba->sli4_hba.hdr_rq->assoc_qid); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tID [%02d], RHQE-COUNT [%04d], " "HOST-INDEX [%04x], PORT-INDEX [%04x]\n", phba->sli4_hba.hdr_rq->queue_id, phba->sli4_hba.hdr_rq->entry_count, phba->sli4_hba.hdr_rq->host_index, phba->sli4_hba.hdr_rq->hba_index); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tID [%02d], RDQE-COUNT [%04d], " "HOST-INDEX [%04x], PORT-INDEX [%04x]\n", phba->sli4_hba.dat_rq->queue_id, phba->sli4_hba.dat_rq->entry_count, phba->sli4_hba.dat_rq->host_index, phba->sli4_hba.dat_rq->hba_index); return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); } #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; /* * File operations for the iDiag debugfs */ #undef lpfc_idiag_op_pciCfg static const struct file_operations lpfc_idiag_op_pciCfg = { .owner = THIS_MODULE, .open = lpfc_idiag_open, .llseek = lpfc_debugfs_lseek, .read = lpfc_idiag_pcicfg_read, .write = lpfc_idiag_pcicfg_write, .release = lpfc_idiag_cmd_release, }; #undef lpfc_idiag_op_queInfo static const struct file_operations lpfc_idiag_op_queInfo = { .owner = THIS_MODULE, .open = lpfc_idiag_open, .read = lpfc_idiag_queinfo_read, .release = lpfc_idiag_release, }; #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 funcX directory for specific HBA PCI function */ snprintf(name, sizeof(name), "fn%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 */ if (phba->sli_rev < LPFC_SLI_REV4) { 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; } } else phba->debug_dumpHBASlim = NULL; /* Setup dumpHostSlim */ if (phba->sli_rev < LPFC_SLI_REV4) { 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; } } else phba->debug_dumpHBASlim = NULL; /* 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; } /* * iDiag debugfs root entry points for SLI4 device only */ if (phba->sli_rev < LPFC_SLI_REV4) goto debug_failed; snprintf(name, sizeof(name), "iDiag"); if (!phba->idiag_root) { phba->idiag_root = debugfs_create_dir(name, phba->hba_debugfs_root); if (!phba->idiag_root) { lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, "2922 Can't create idiag debugfs\n"); goto debug_failed; } /* Initialize iDiag data structure */ memset(&idiag, 0, sizeof(idiag)); } /* iDiag read PCI config space */ snprintf(name, sizeof(name), "pciCfg"); if (!phba->idiag_pci_cfg) { phba->idiag_pci_cfg = debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, phba->idiag_root, phba, &lpfc_idiag_op_pciCfg); if (!phba->idiag_pci_cfg) { lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, "2923 Can't create idiag debugfs\n"); goto debug_failed; } idiag.offset.last_rd = 0; } /* iDiag get PCI function queue information */ snprintf(name, sizeof(name), "queInfo"); if (!phba->idiag_que_info) { phba->idiag_que_info = debugfs_create_file(name, S_IFREG|S_IRUGO, phba->idiag_root, phba, &lpfc_idiag_op_queInfo); if (!phba->idiag_que_info) { lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, "2924 Can't create idiag debugfs\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; } /* * iDiag release */ if (phba->sli_rev == LPFC_SLI_REV4) { if (phba->idiag_que_info) { /* iDiag queInfo */ debugfs_remove(phba->idiag_que_info); phba->idiag_que_info = NULL; } if (phba->idiag_pci_cfg) { /* iDiag pciCfg */ debugfs_remove(phba->idiag_pci_cfg); phba->idiag_pci_cfg = NULL; } /* Finally remove the iDiag debugfs root */ if (phba->idiag_root) { /* iDiag root */ debugfs_remove(phba->idiag_root); phba->idiag_root = NULL; } } if (phba->hba_debugfs_root) { debugfs_remove(phba->hba_debugfs_root); /* fnX */ 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; }