/******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Fibre Channel Host Bus Adapters. * * Copyright (C) 2007-2012 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 #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" #include "lpfc_bsg.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; buffer = kmalloc(LPFC_DEBUG_TRC_ENTRY_SIZE, GFP_KERNEL); if (!buffer) return 0; 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; kfree(buffer); 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; buffer = kmalloc(LPFC_DEBUG_TRC_ENTRY_SIZE, GFP_KERNEL); if (!buffer) return 0; 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; kfree(buffer); 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; buffer = kmalloc(1024, GFP_KERNEL); if (!buffer) return 0; 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); kfree(buffer); 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 boundary */ 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 boundary */ 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; } static ssize_t lpfc_debugfs_dif_err_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) { struct dentry *dent = file->f_dentry; struct lpfc_hba *phba = file->private_data; char cbuf[32]; uint64_t tmp = 0; int cnt = 0; if (dent == phba->debug_writeGuard) cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_wgrd_cnt); else if (dent == phba->debug_writeApp) cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_wapp_cnt); else if (dent == phba->debug_writeRef) cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_wref_cnt); else if (dent == phba->debug_readGuard) cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_rgrd_cnt); else if (dent == phba->debug_readApp) cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_rapp_cnt); else if (dent == phba->debug_readRef) cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_rref_cnt); else if (dent == phba->debug_InjErrNPortID) cnt = snprintf(cbuf, 32, "0x%06x\n", phba->lpfc_injerr_nportid); else if (dent == phba->debug_InjErrWWPN) { memcpy(&tmp, &phba->lpfc_injerr_wwpn, sizeof(struct lpfc_name)); tmp = cpu_to_be64(tmp); cnt = snprintf(cbuf, 32, "0x%016llx\n", tmp); } else if (dent == phba->debug_InjErrLBA) { if (phba->lpfc_injerr_lba == (sector_t)(-1)) cnt = snprintf(cbuf, 32, "off\n"); else cnt = snprintf(cbuf, 32, "0x%llx\n", (uint64_t) phba->lpfc_injerr_lba); } else lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0547 Unknown debugfs error injection entry\n"); return simple_read_from_buffer(buf, nbytes, ppos, &cbuf, cnt); } static ssize_t lpfc_debugfs_dif_err_write(struct file *file, const char __user *buf, size_t nbytes, loff_t *ppos) { struct dentry *dent = file->f_dentry; struct lpfc_hba *phba = file->private_data; char dstbuf[32]; uint64_t tmp = 0; int size; memset(dstbuf, 0, 32); size = (nbytes < 32) ? nbytes : 32; if (copy_from_user(dstbuf, buf, size)) return 0; if (dent == phba->debug_InjErrLBA) { if ((buf[0] == 'o') && (buf[1] == 'f') && (buf[2] == 'f')) tmp = (uint64_t)(-1); } if ((tmp == 0) && (kstrtoull(dstbuf, 0, &tmp))) return 0; if (dent == phba->debug_writeGuard) phba->lpfc_injerr_wgrd_cnt = (uint32_t)tmp; else if (dent == phba->debug_writeApp) phba->lpfc_injerr_wapp_cnt = (uint32_t)tmp; else if (dent == phba->debug_writeRef) phba->lpfc_injerr_wref_cnt = (uint32_t)tmp; else if (dent == phba->debug_readGuard) phba->lpfc_injerr_rgrd_cnt = (uint32_t)tmp; else if (dent == phba->debug_readApp) phba->lpfc_injerr_rapp_cnt = (uint32_t)tmp; else if (dent == phba->debug_readRef) phba->lpfc_injerr_rref_cnt = (uint32_t)tmp; else if (dent == phba->debug_InjErrLBA) phba->lpfc_injerr_lba = (sector_t)tmp; else if (dent == phba->debug_InjErrNPortID) phba->lpfc_injerr_nportid = (uint32_t)(tmp & Mask_DID); else if (dent == phba->debug_InjErrWWPN) { tmp = cpu_to_be64(tmp); memcpy(&phba->lpfc_injerr_wwpn, &tmp, sizeof(struct lpfc_name)); } else lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0548 Unknown debugfs error injection entry\n"); return nbytes; } static int lpfc_debugfs_dif_err_release(struct inode *inode, struct file *file) { return 0; } /** * 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 * --------------------------------- * * All access methods are through the proper SLI4 PCI function's debugfs * iDiag directory: * * /sys/kernel/debug/lpfc/fn<#>/iDiag */ /** * 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 i; size_t bsize; /* 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 i; idiag_cmd->data[i] = simple_strtol(step_str, NULL, 0); } return i; } /** * 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 of command for write operation. * * Returns: * This function returns zero. **/ static int lpfc_idiag_cmd_release(struct inode *inode, struct file *file) { struct lpfc_debug *debug = file->private_data; if (debug->op == LPFC_IDIAG_OP_WR) { switch (idiag.cmd.opcode) { case LPFC_IDIAG_CMD_PCICFG_WR: case LPFC_IDIAG_CMD_PCICFG_ST: case LPFC_IDIAG_CMD_PCICFG_CL: case LPFC_IDIAG_CMD_QUEACC_WR: case LPFC_IDIAG_CMD_QUEACC_ST: case LPFC_IDIAG_CMD_QUEACC_CL: memset(&idiag, 0, sizeof(idiag)); break; default: break; } } /* 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[IDIAG_PCICFG_WHERE_INDX]; count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX]; } 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_BROWSE: /* 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); if (offset >= LPFC_PCI_CFG_SIZE) { len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, "\n"); break; } 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 */ if (index == 0) { idiag.offset.last_rd += LPFC_PCI_CFG_RD_SIZE; if (idiag.offset.last_rd >= LPFC_PCI_CFG_SIZE) idiag.offset.last_rd = 0; } else 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 < 0) return rc; if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) { /* Sanity check on PCI config read command line arguments */ if (rc != LPFC_PCI_CFG_RD_CMD_ARG) goto error_out; /* Read command from PCI config space, set up command fields */ where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX]; count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX]; if (count == LPFC_PCI_CFG_BROWSE) { if (where % sizeof(uint32_t)) goto error_out; /* Starting offset to browse */ idiag.offset.last_rd = where; } 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) { /* Sanity check on PCI config write command line arguments */ if (rc != LPFC_PCI_CFG_WR_CMD_ARG) goto error_out; /* Write command to PCI config space, read-modify-write */ where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX]; count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX]; value = idiag.cmd.data[IDIAG_PCICFG_VALUE_INDX]; /* 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_baracc_read - idiag debugfs pci bar access read * @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 bar memory mapped space * according to the idiag command, 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_baracc_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, offset_run, len = 0, index; int bar_num, acc_range, bar_size; char *pbuffer; void __iomem *mem_mapped_bar; uint32_t if_type; struct pci_dev *pdev; uint32_t u32val; 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_BAR_RD_BUF_SIZE, GFP_KERNEL); if (!debug->buffer) return 0; pbuffer = debug->buffer; if (*ppos) return 0; if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_RD) { bar_num = idiag.cmd.data[IDIAG_BARACC_BAR_NUM_INDX]; offset = idiag.cmd.data[IDIAG_BARACC_OFF_SET_INDX]; acc_range = idiag.cmd.data[IDIAG_BARACC_ACC_MOD_INDX]; bar_size = idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX]; } else return 0; if (acc_range == 0) return 0; if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); if (if_type == LPFC_SLI_INTF_IF_TYPE_0) { if (bar_num == IDIAG_BARACC_BAR_0) mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p; else if (bar_num == IDIAG_BARACC_BAR_1) mem_mapped_bar = phba->sli4_hba.ctrl_regs_memmap_p; else if (bar_num == IDIAG_BARACC_BAR_2) mem_mapped_bar = phba->sli4_hba.drbl_regs_memmap_p; else return 0; } else if (if_type == LPFC_SLI_INTF_IF_TYPE_2) { if (bar_num == IDIAG_BARACC_BAR_0) mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p; else return 0; } else return 0; /* Read single PCI bar space register */ if (acc_range == SINGLE_WORD) { offset_run = offset; u32val = readl(mem_mapped_bar + offset_run); len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len, "%05x: %08x\n", offset_run, u32val); } else goto baracc_browse; return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); baracc_browse: /* Browse all PCI bar space registers */ offset_label = idiag.offset.last_rd; offset_run = offset_label; /* Read PCI bar memory mapped space */ len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len, "%05x: ", offset_label); index = LPFC_PCI_BAR_RD_SIZE; while (index > 0) { u32val = readl(mem_mapped_bar + offset_run); len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len, "%08x ", u32val); offset_run += sizeof(uint32_t); if (acc_range == LPFC_PCI_BAR_BROWSE) { if (offset_run >= bar_size) { len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len, "\n"); break; } } else { if (offset_run >= offset + (acc_range * sizeof(uint32_t))) { len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len, "\n"); break; } } index -= sizeof(uint32_t); if (!index) len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len, "\n"); else if (!(index % (8 * sizeof(uint32_t)))) { offset_label += (8 * sizeof(uint32_t)); len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len, "\n%05x: ", offset_label); } } /* Set up the offset for next portion of pci bar read */ if (index == 0) { idiag.offset.last_rd += LPFC_PCI_BAR_RD_SIZE; if (acc_range == LPFC_PCI_BAR_BROWSE) { if (idiag.offset.last_rd >= bar_size) idiag.offset.last_rd = 0; } else { if (offset_run >= offset + (acc_range * sizeof(uint32_t))) idiag.offset.last_rd = offset; } } else { if (acc_range == LPFC_PCI_BAR_BROWSE) idiag.offset.last_rd = 0; else idiag.offset.last_rd = offset; } return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); } /** * lpfc_idiag_baracc_write - Syntax check and set up idiag bar access 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 bar memory mapped space read or * write command accordingly. In the case of PCI bar memory mapped space * read command, it sets up the command in the idiag command struct for * the debugfs read operation. In the case of PCI bar memorpy mapped space * write operation, it executes the write operation into the PCI bar memory * mapped 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_baracc_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 bar_num, bar_size, offset, value, acc_range; struct pci_dev *pdev; void __iomem *mem_mapped_bar; uint32_t if_type; uint32_t u32val; 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 < 0) return rc; if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); bar_num = idiag.cmd.data[IDIAG_BARACC_BAR_NUM_INDX]; if (if_type == LPFC_SLI_INTF_IF_TYPE_0) { if ((bar_num != IDIAG_BARACC_BAR_0) && (bar_num != IDIAG_BARACC_BAR_1) && (bar_num != IDIAG_BARACC_BAR_2)) goto error_out; } else if (if_type == LPFC_SLI_INTF_IF_TYPE_2) { if (bar_num != IDIAG_BARACC_BAR_0) goto error_out; } else goto error_out; if (if_type == LPFC_SLI_INTF_IF_TYPE_0) { if (bar_num == IDIAG_BARACC_BAR_0) { idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] = LPFC_PCI_IF0_BAR0_SIZE; mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p; } else if (bar_num == IDIAG_BARACC_BAR_1) { idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] = LPFC_PCI_IF0_BAR1_SIZE; mem_mapped_bar = phba->sli4_hba.ctrl_regs_memmap_p; } else if (bar_num == IDIAG_BARACC_BAR_2) { idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] = LPFC_PCI_IF0_BAR2_SIZE; mem_mapped_bar = phba->sli4_hba.drbl_regs_memmap_p; } else goto error_out; } else if (if_type == LPFC_SLI_INTF_IF_TYPE_2) { if (bar_num == IDIAG_BARACC_BAR_0) { idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] = LPFC_PCI_IF2_BAR0_SIZE; mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p; } else goto error_out; } else goto error_out; offset = idiag.cmd.data[IDIAG_BARACC_OFF_SET_INDX]; if (offset % sizeof(uint32_t)) goto error_out; bar_size = idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX]; if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_RD) { /* Sanity check on PCI config read command line arguments */ if (rc != LPFC_PCI_BAR_RD_CMD_ARG) goto error_out; acc_range = idiag.cmd.data[IDIAG_BARACC_ACC_MOD_INDX]; if (acc_range == LPFC_PCI_BAR_BROWSE) { if (offset > bar_size - sizeof(uint32_t)) goto error_out; /* Starting offset to browse */ idiag.offset.last_rd = offset; } else if (acc_range > SINGLE_WORD) { if (offset + acc_range * sizeof(uint32_t) > bar_size) goto error_out; /* Starting offset to browse */ idiag.offset.last_rd = offset; } else if (acc_range != SINGLE_WORD) goto error_out; } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_WR || idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_ST || idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_CL) { /* Sanity check on PCI bar write command line arguments */ if (rc != LPFC_PCI_BAR_WR_CMD_ARG) goto error_out; /* Write command to PCI bar space, read-modify-write */ acc_range = SINGLE_WORD; value = idiag.cmd.data[IDIAG_BARACC_REG_VAL_INDX]; if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_WR) { writel(value, mem_mapped_bar + offset); readl(mem_mapped_bar + offset); } if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_ST) { u32val = readl(mem_mapped_bar + offset); u32val |= value; writel(u32val, mem_mapped_bar + offset); readl(mem_mapped_bar + offset); } if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_CL) { u32val = readl(mem_mapped_bar + offset); u32val &= ~value; writel(u32val, mem_mapped_bar + offset); readl(mem_mapped_bar + offset); } } 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"); if (phba->sli4_hba.sp_eq) { len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tEQID[%02d], " "QE-COUNT[%04d], QE-SIZE[%04d], " "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", phba->sli4_hba.sp_eq->queue_id, phba->sli4_hba.sp_eq->entry_count, phba->sli4_hba.sp_eq->entry_size, 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"); if (phba->sli4_hba.fp_eq) { for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++) { if (phba->sli4_hba.fp_eq[fcp_qidx]) { len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tEQID[%02d], " "QE-COUNT[%04d], QE-SIZE[%04d], " "HOST-INDEX[%04d], PORT-INDEX[%04d]\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]->entry_size, 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, "Slow-path MBX CQ information:\n"); if (phba->sli4_hba.mbx_cq) { len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "Associated EQID[%02d]:\n", phba->sli4_hba.mbx_cq->assoc_qid); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tCQID[%02d], " "QE-COUNT[%04d], QE-SIZE[%04d], " "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", phba->sli4_hba.mbx_cq->queue_id, phba->sli4_hba.mbx_cq->entry_count, phba->sli4_hba.mbx_cq->entry_size, 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 ELS CQ information:\n"); if (phba->sli4_hba.els_cq) { len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "Associated EQID[%02d]:\n", phba->sli4_hba.els_cq->assoc_qid); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tCQID [%02d], " "QE-COUNT[%04d], QE-SIZE[%04d], " "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", phba->sli4_hba.els_cq->queue_id, phba->sli4_hba.els_cq->entry_count, phba->sli4_hba.els_cq->entry_size, 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 FCP CQ information:\n"); fcp_qidx = 0; if (phba->sli4_hba.fcp_cq) { do { if (phba->sli4_hba.fcp_cq[fcp_qidx]) { len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "Associated EQID[%02d]:\n", phba->sli4_hba.fcp_cq[fcp_qidx]->assoc_qid); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tCQID[%02d], " "QE-COUNT[%04d], QE-SIZE[%04d], " "HOST-INDEX[%04d], PORT-INDEX[%04d]\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]->entry_size, phba->sli4_hba.fcp_cq[fcp_qidx]->host_index, phba->sli4_hba.fcp_cq[fcp_qidx]->hba_index); } } while (++fcp_qidx < phba->cfg_fcp_eq_count); 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, "Slow-path MBX MQ information:\n"); if (phba->sli4_hba.mbx_wq) { len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "Associated CQID[%02d]:\n", phba->sli4_hba.mbx_wq->assoc_qid); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tWQID[%02d], " "QE-COUNT[%04d], QE-SIZE[%04d], " "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", phba->sli4_hba.mbx_wq->queue_id, phba->sli4_hba.mbx_wq->entry_count, phba->sli4_hba.mbx_wq->entry_size, 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 ELS WQ information:\n"); if (phba->sli4_hba.els_wq) { len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "Associated CQID[%02d]:\n", phba->sli4_hba.els_wq->assoc_qid); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tWQID[%02d], " "QE-COUNT[%04d], QE-SIZE[%04d], " "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", phba->sli4_hba.els_wq->queue_id, phba->sli4_hba.els_wq->entry_count, phba->sli4_hba.els_wq->entry_size, 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 FCP WQ information:\n"); if (phba->sli4_hba.fcp_wq) { for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++) { if (!phba->sli4_hba.fcp_wq[fcp_qidx]) continue; len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "Associated CQID[%02d]:\n", phba->