/******************************************************************* * 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 <linux/blkdev.h> #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/idr.h> #include <linux/interrupt.h> #include <linux/kthread.h> #include <linux/slab.h> #include <linux/pci.h> #include <linux/spinlock.h> #include <linux/ctype.h> #include <scsi/scsi.h> #include <scsi/scsi_device.h> #include <scsi/scsi_host.h> #include <scsi/scsi_transport_fc.h> #include "lpfc_hw4.h" #include "lpfc_hw.h" #include "lpfc_sli.h" #include "lpfc_sli4.h" #include "lpfc_nl.h" #include "lpfc_disc.h" #include "lpfc_scsi.h" #include "lpfc.h" #include "lpfc_logmsg.h" #include "lpfc_crtn.h" #include "lpfc_vport.h" #include "lpfc_version.h" #include "lpfc_compat.h" #include "lpfc_debugfs.h" #ifdef CONFIG_SCSI_LPFC_DEBUG_FS /* * debugfs interface * * To access this interface the user should: * # mount -t debugfs none /sys/kernel/debug * * The lpfc debugfs directory hierarchy is: * /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 <linux/debugfs.h> 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; j<hbqs->entry_count; j++) { len += snprintf(buf+len, size-len, "%03d: %08x %04x %05x ", j, le32_to_cpu(hbqe->bde.addrLow), le32_to_cpu(hbqe->bde.tus.w), le32_to_cpu(hbqe->buffer_tag)); i = 0; found = 0; /* First calculate if slot has an associated posted buffer */ low = hbqs->hbqPutIdx - posted; if (low >= 0) { if ((j >= hbqs->hbqPutIdx) || (j < low)) { len += snprintf(buf+len, size-len, "Unused\n"); goto skipit; } } else { if ((j >= hbqs->hbqPutIdx) && (j < (hbqs->entry_count+low))) { len += snprintf(buf+len, size-len, "Unused\n"); goto skipit; } } /* Get the Buffer info for the posted buffer */ list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) { hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf); phys = ((uint64_t)hbq_buf->dbuf.phys & 0xffffffff); if (phys == le32_to_cpu(hbqe->bde.addrLow)) { len += snprintf(buf+len, size-len, "Buf%d: %p %06x\n", i, hbq_buf->dbuf.virt, hbq_buf->tag); found = 1; break; } i++; } if (!found) { len += snprintf(buf+len, size-len, "No DMAinfo?\n"); } skipit: hbqe++; if (len > LPFC_HBQINFO_SIZE - 54) break; } spin_unlock_irq(&phba->hbalock); return len; } static int lpfc_debugfs_last_hba_slim_off; /** * lpfc_debugfs_dumpHBASlim_data - Dump HBA SLIM info to a buffer * @phba: The HBA to gather SLIM info from. * @buf: The buffer to dump log into. * @size: The maximum amount of data to process. * * Description: * This routine dumps the current contents of HBA SLIM for the HBA associated * with @phba to @buf up to @size bytes of data. This is the raw HBA SLIM data. * * Notes: * This routine will only dump up to 1024 bytes of data each time called and * should be called multiple times to dump the entire HBA SLIM. * * Return Value: * This routine returns the amount of bytes that were dumped into @buf and will * not exceed @size. **/ static int lpfc_debugfs_dumpHBASlim_data(struct lpfc_hba *phba, char *buf, int size) { int len = 0; int i, off; uint32_t *ptr; char buffer[1024]; off = 0; spin_lock_irq(&phba->hbalock); len += snprintf(buf+len, size-len, "HBA SLIM\n"); lpfc_memcpy_from_slim(buffer, phba->MBslimaddr + lpfc_debugfs_last_hba_slim_off, 1024); ptr = (uint32_t *)&buffer[0]; off = lpfc_debugfs_last_hba_slim_off; /* Set it up for the next time */ lpfc_debugfs_last_hba_slim_off += 1024; if (lpfc_debugfs_last_hba_slim_off >= 4096) lpfc_debugfs_last_hba_slim_off = 0; i = 1024; while (i > 0) { len += snprintf(buf+len, size-len, "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n", off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5), *(ptr+6), *(ptr+7)); ptr += 8; i -= (8 * sizeof(uint32_t)); off += (8 * sizeof(uint32_t)); } spin_unlock_irq(&phba->hbalock); return len; } /** * lpfc_debugfs_dumpHostSlim_data - Dump host SLIM info to a buffer * @phba: The HBA to gather Host SLIM info from. * @buf: The buffer to dump log into. * @size: The maximum amount of data to process. * * Description: * This routine dumps the current contents of host SLIM for the host associated * with @phba to @buf up to @size bytes of data. The dump will contain the * Mailbox, PCB, Rings, and Registers that are located in host memory. * * Return Value: * This routine returns the amount of bytes that were dumped into @buf and will * not exceed @size. **/ static int lpfc_debugfs_dumpHostSlim_data(struct lpfc_hba *phba, char *buf, int size) { int len = 0; int i, off; uint32_t word0, word1, word2, word3; uint32_t *ptr; struct lpfc_pgp *pgpp; struct lpfc_sli *psli = &phba->sli; struct lpfc_sli_ring *pring; off = 0; spin_lock_irq(&phba->hbalock); len += snprintf(buf+len, size-len, "SLIM Mailbox\n"); ptr = (uint32_t *)phba->slim2p.virt; i = sizeof(MAILBOX_t); while (i > 0) { len += snprintf(buf+len, size-len, "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n", off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5), *(ptr+6), *(ptr+7)); ptr += 8; i -= (8 * sizeof(uint32_t)); off += (8 * sizeof(uint32_t)); } len += snprintf(buf+len, size-len, "SLIM PCB\n"); ptr = (uint32_t *)phba->pcb; i = sizeof(PCB_t); while (i > 0) { len += snprintf(buf+len, size-len, "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n", off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5), *(ptr+6), *(ptr+7)); ptr += 8; i -= (8 * sizeof(uint32_t)); off += (8 * sizeof(uint32_t)); } for (i = 0; i < 4; i++) { pgpp = &phba->port_gp[i]; pring = &psli->ring[i]; len += snprintf(buf+len, size-len, "Ring %d: CMD GetInx:%d (Max:%d Next:%d " "Local:%d flg:x%x) RSP PutInx:%d Max:%d\n", i, pgpp->cmdGetInx, pring->numCiocb, pring->next_cmdidx, pring->local_getidx, pring->flag, pgpp->rspPutInx, pring->numRiocb); } if (phba->sli_rev <= LPFC_SLI_REV3) { word0 = readl(phba->HAregaddr); word1 = readl(phba->CAregaddr); word2 = readl(phba->HSregaddr); word3 = readl(phba->HCregaddr); len += snprintf(buf+len, size-len, "HA:%08x CA:%08x HS:%08x " "HC:%08x\n", word0, word1, word2, word3); } spin_unlock_irq(&phba->hbalock); return len; } /** * lpfc_debugfs_nodelist_data - Dump target node list to a buffer * @vport: The vport to gather target node info from. * @buf: The buffer to dump log into. * @size: The maximum amount of data to process. * * Description: * This routine dumps the current target node list associated with @vport to * @buf up to @size bytes of data. Each node entry in the dump will contain a * node state, DID, WWPN, WWNN, RPI, flags, type, and other useful fields. * * Return Value: * This routine returns the amount of bytes that were dumped into @buf and will * not exceed @size. **/ static int lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size) { int len = 0; int cnt; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_nodelist *ndlp; unsigned char *statep, *name; cnt = (LPFC_NODELIST_SIZE / LPFC_NODELIST_ENTRY_SIZE); spin_lock_irq(shost->host_lock); list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { if (!cnt) { len += snprintf(buf+len, size-len, "Missing Nodelist Entries\n"); break; } cnt--; switch (ndlp->nlp_state) { case NLP_STE_UNUSED_NODE: statep = "UNUSED"; break; case NLP_STE_PLOGI_ISSUE: statep = "PLOGI "; break; case NLP_STE_ADISC_ISSUE: statep = "ADISC "; break; case NLP_STE_REG_LOGIN_ISSUE: statep = "REGLOG"; break; case NLP_STE_PRLI_ISSUE: statep = "PRLI "; break; case NLP_STE_UNMAPPED_NODE: statep = "UNMAP "; break; case NLP_STE_MAPPED_NODE: statep = "MAPPED"; break; case NLP_STE_NPR_NODE: statep = "NPR "; break; default: statep = "UNKNOWN"; } len += snprintf(buf+len, size-len, "%s DID:x%06x ", statep, ndlp->nlp_DID); name = (unsigned char *)&ndlp->nlp_portname; len += snprintf(buf+len, size-len, "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ", *name, *(name+1), *(name+2), *(name+3), *(name+4), *(name+5), *(name+6), *(name+7)); name = (unsigned char *)&ndlp->nlp_nodename; len += snprintf(buf+len, size-len, "WWNN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ", *name, *(name+1), *(name+2), *(name+3), *(name+4), *(name+5), *(name+6), *(name+7)); len += snprintf(buf+len, size-len, "RPI:%03d flag:x%08x ", ndlp->nlp_rpi, ndlp->nlp_flag); if (!ndlp->nlp_type) len += snprintf(buf+len, size-len, "UNKNOWN_TYPE "); if (ndlp->nlp_type & NLP_FC_NODE) len += snprintf(buf+len, size-len, "FC_NODE "); if (ndlp->nlp_type & NLP_FABRIC) len += snprintf(buf+len, size-len, "FABRIC "); if (ndlp->nlp_type & NLP_FCP_TARGET) len += snprintf(buf+len, size-len, "FCP_TGT sid:%d ", ndlp->nlp_sid); if (ndlp->nlp_type & NLP_FCP_INITIATOR) len += snprintf(buf+len, size-len, "FCP_INITIATOR "); len += snprintf(buf+len, size-len, "usgmap:%x ", ndlp->nlp_usg_map); len += snprintf(buf+len, size-len, "refcnt:%x", atomic_read(&ndlp->kref.refcount)); len += snprintf(buf+len, size-len, "\n"); } spin_unlock_irq(shost->host_lock); return len; } #endif /** * lpfc_debugfs_disc_trc - Store discovery trace log * @vport: The vport to associate this trace string with for retrieval. * @mask: Log entry classification. * @fmt: Format string to be displayed when dumping the log. * @data1: 1st data parameter to be applied to @fmt. * @data2: 2nd data parameter to be applied to @fmt. * @data3: 3rd data parameter to be applied to @fmt. * * Description: * This routine is used by the driver code to add a debugfs log entry to the * discovery trace buffer associated with @vport. Only entries with a @mask that * match the current debugfs discovery mask will be saved. Entries that do not * match will be thrown away. @fmt, @data1, @data2, and @data3 are used like * printf when displaying the log. **/ inline void lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt, uint32_t data1, uint32_t data2, uint32_t data3) { #ifdef CONFIG_SCSI_LPFC_DEBUG_FS struct lpfc_debugfs_trc *dtp; int index; if (!(lpfc_debugfs_mask_disc_trc & mask)) return; if (!lpfc_debugfs_enable || !lpfc_debugfs_max_disc_trc || !vport || !vport->disc_trc) return; index = atomic_inc_return(&vport->disc_trc_cnt) & (lpfc_debugfs_max_disc_trc - 1); dtp = vport->disc_trc + index; dtp->fmt = fmt; dtp->data1 = data1; dtp->data2 = data2; dtp->data3 = data3; dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt); dtp->jif = jiffies; #endif return; } /** * lpfc_debugfs_slow_ring_trc - Store slow ring trace log * @phba: The phba to associate this trace string with for retrieval. * @fmt: Format string to be displayed when dumping the log. * @data1: 1st data parameter to be applied to @fmt. * @data2: 2nd data parameter to be applied to @fmt. * @data3: 3rd data parameter to be applied to @fmt. * * Description: * This routine is used by the driver code to add a debugfs log entry to the * discovery trace buffer associated with @vport. @fmt, @data1, @data2, and * @data3 are used like printf when displaying the log. **/ inline void lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt, uint32_t data1, uint32_t data2, uint32_t data3) { #ifdef CONFIG_SCSI_LPFC_DEBUG_FS struct lpfc_debugfs_trc *dtp; int index; if (!lpfc_debugfs_enable || !lpfc_debugfs_max_slow_ring_trc || !phba || !phba->slow_ring_trc) return; index = atomic_inc_return(&phba->slow_ring_trc_cnt) & (lpfc_debugfs_max_slow_ring_trc - 1); dtp = phba->slow_ring_trc + index; dtp->fmt = fmt; dtp->data1 = data1; dtp->data2 = data2; dtp->data3 = data3; dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt); dtp->jif = jiffies; #endif return; } #ifdef CONFIG_SCSI_LPFC_DEBUG_FS /** * lpfc_debugfs_disc_trc_open - Open the discovery trace log * @inode: The inode pointer that contains a vport pointer. * @file: The file pointer to attach the log output. * * Description: * This routine is the entry point for the debugfs open file operation. It gets * the vport from the i_private field in @inode, allocates the necessary buffer * for the log, fills the buffer from the in-memory log for this vport, and then * returns a pointer to that log in the private_data field in @file. * * Returns: * This function returns zero if successful. On error it will return an negative * error value. **/ static int lpfc_debugfs_disc_trc_open(struct inode *inode, struct file *file) { struct lpfc_vport *vport = inode->i_private; struct lpfc_debug *debug; int size; int rc = -ENOMEM; if (!lpfc_debugfs_max_disc_trc) { rc = -ENOSPC; goto out; } debug = kmalloc(sizeof(*debug), GFP_KERNEL); if (!debug) goto out; /* Round to page boundary */ size = (lpfc_debugfs_max_disc_trc * LPFC_DEBUG_TRC_ENTRY_SIZE); size = PAGE_ALIGN(size); debug->buffer = kmalloc(size, GFP_KERNEL); if (!debug->buffer) { kfree(debug); goto out; } debug->len = lpfc_debugfs_disc_trc_data(vport, debug->buffer, size); file->private_data = debug; rc = 0; out: return rc; } /** * lpfc_debugfs_slow_ring_trc_open - Open the Slow Ring trace log * @inode: The inode pointer that contains a vport pointer. * @file: The file pointer to attach the log output. * * Description: * This routine is the entry point for the debugfs open file operation. It gets * the vport from the i_private field in @inode, allocates the necessary buffer * for the log, fills the buffer from the in-memory log for this vport, and then * returns a pointer to that log in the private_data field in @file. * * Returns: * This function returns zero if successful. On error it will return an negative * error value. **/ static int lpfc_debugfs_slow_ring_trc_open(struct inode *inode, struct file *file) { struct lpfc_hba *phba = inode->i_private; struct lpfc_debug *debug; int size; int rc = -ENOMEM; if (!lpfc_debugfs_max_slow_ring_trc) { rc = -ENOSPC; goto out; } debug = kmalloc(sizeof(*debug), GFP_KERNEL); if (!debug) goto out; /* Round to page boundary */ size = (lpfc_debugfs_max_slow_ring_trc * LPFC_DEBUG_TRC_ENTRY_SIZE); size = PAGE_ALIGN(size); debug->buffer = kmalloc(size, GFP_KERNEL); if (!debug->buffer) { kfree(debug); goto out; } debug->len = lpfc_debugfs_slow_ring_trc_data(phba, debug->buffer, size); file->private_data = debug; rc = 0; out: return rc; } /** * lpfc_debugfs_hbqinfo_open - Open the hbqinfo debugfs buffer * @inode: The inode pointer that contains a vport pointer. * @file: The file pointer to attach the log output. * * Description: * This routine is the entry point for the debugfs open file operation. It gets * the vport from the i_private field in @inode, allocates the necessary buffer * for the log, fills the buffer from the in-memory log for this vport, and then * returns a pointer to that log in the private_data field in @file. * * Returns: * This function returns zero if successful. On error it will return an negative * error value. **/ static int lpfc_debugfs_hbqinfo_open(struct inode *inode, struct file *file) { struct lpfc_hba *phba = inode->i_private; struct lpfc_debug *debug; int rc = -ENOMEM; debug = kmalloc(sizeof(*debug), GFP_KERNEL); if (!debug) goto out; /* Round to page boundary */ debug->buffer = kmalloc(LPFC_HBQINFO_SIZE, GFP_KERNEL); if (!debug->buffer) { kfree(debug); goto out; } debug->len = lpfc_debugfs_hbqinfo_data(phba, debug->buffer, LPFC_HBQINFO_SIZE); file->private_data = debug; rc = 0; out: return rc; } /** * lpfc_debugfs_dumpHBASlim_open - Open the Dump HBA SLIM debugfs buffer * @inode: The inode pointer that contains a vport pointer. * @file: The file pointer to attach the log output. * * Description: * This routine is the entry point for the debugfs open file operation. It gets * the vport from the i_private field in @inode, allocates the necessary buffer * for the log, fills the buffer from the in-memory log for this vport, and then * returns a pointer to that log in the private_data field in @file. * * Returns: * This function returns zero if successful. On error it will return an negative * error value. **/ static int lpfc_debugfs_dumpHBASlim_open(struct inode *inode, struct file *file) { struct lpfc_hba *phba = inode->i_private; struct lpfc_debug *debug; int rc = -ENOMEM; debug = kmalloc(sizeof(*debug), GFP_KERNEL); if (!debug) goto out; /* Round to page boundary */ debug->buffer = kmalloc(LPFC_DUMPHBASLIM_SIZE, GFP_KERNEL); if (!debug->buffer) { kfree(debug); goto out; } debug->len = lpfc_debugfs_dumpHBASlim_data(phba, debug->buffer, LPFC_DUMPHBASLIM_SIZE); file->private_data = debug; rc = 0; out: return rc; } /** * lpfc_debugfs_dumpHostSlim_open - Open the Dump Host SLIM debugfs buffer * @inode: The inode pointer that contains a vport pointer. * @file: The file pointer to attach the log output. * * Description: * This routine is the entry point for the debugfs open file operation. It gets * the vport from the i_private field in @inode, allocates the necessary buffer * for the log, fills the buffer from the in-memory log for this vport, and then * returns a pointer to that log in the private_data field in @file. * * Returns: * This function returns zero if successful. On error it will return an negative * error value. **/ static int lpfc_debugfs_dumpHostSlim_open(struct inode *inode, struct file *file) { struct lpfc_hba *phba = inode->i_private; struct lpfc_debug *debug; int rc = -ENOMEM; debug = kmalloc(sizeof(*debug), GFP_KERNEL); if (!debug) goto out; /* Round to page boundary */ debug->buffer = kmalloc(LPFC_DUMPHOSTSLIM_SIZE, GFP_KERNEL); if (!debug->buffer) { kfree(debug); goto out; } debug->len = lpfc_debugfs_dumpHostSlim_data(phba, debug->buffer, LPFC_DUMPHOSTSLIM_SIZE); file->private_data = debug; rc = 0; out: return rc; } static int lpfc_debugfs_dumpData_open(struct inode *inode, struct file *file) { struct lpfc_debug *debug; int rc = -ENOMEM; if (!_dump_buf_data) return -EBUSY; debug = kmalloc(sizeof(*debug), GFP_KERNEL); if (!debug) goto out; /* Round to page 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; } /** * 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[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_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); 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 < 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[0]; count = idiag.cmd.data[1]; 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[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, "\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"); for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; 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"); 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"); 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; do { 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"); 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"); 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"); for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++) { len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "Associated CQID[%02d]:\n", phba->sli4_hba.fcp_wq[fcp_qidx]->assoc_qid); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tWQID[%02d], " "QE-COUNT[%04d], WQE-SIZE[%04d], " "HOST-INDEX[%04d], PORT-INDEX[%04d]\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]->entry_size, 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, "Associated CQID[%02d]:\n", phba->sli4_hba.hdr_rq->assoc_qid); len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\tHQID[%02d], " "QE-COUNT[%04d], QE-SIZE[%04d], " "HOST-INDEX[%04d], PORT-INDEX[%04d]\n", phba->sli4_hba.hdr_rq->queue_id, phba->sli4_hba.hdr_rq->entry_count, phba->sli4_hba.hdr_rq->entry_size, 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, "\tDQID[%02d], " "QE-COUNT[%04d], QE-SIZE[%04d], " "HOST-INDEX[%04d], PORT-INDEX[%04d]\n", phba->sli4_hba.dat_rq->queue_id, phba->sli4_hba.dat_rq->entry_count, phba->sli4_hba.dat_rq->entry_size, phba->sli4_hba.dat_rq->host_index, phba->sli4_hba.dat_rq->hba_index); return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); } /** * lpfc_idiag_que_param_check - queue access command parameter sanity check * @q: The pointer to queue structure. * @index: The index into a queue entry. * @count: The number of queue entries to access. * * Description: * The routine performs sanity check on device queue access method commands. * * Returns: * This function returns -EINVAL when fails the sanity check, otherwise, it * returns 0. **/ static int lpfc_idiag_que_param_check(struct lpfc_queue *q, int index, int count) { /* Only support single entry read or browsing */ if ((count != 1) && (count != LPFC_QUE_ACC_BROWSE)) return -EINVAL; if (index > q->entry_count - 1) return -EINVAL; return 0; } /** * lpfc_idiag_queacc_read_qe - read a single entry from the given queue index * @pbuffer: The pointer to buffer to copy the read data into. * @pque: The pointer to the queue to be read. * @index: The index into the queue entry. * * Description: * This routine reads out a single entry from the given queue's index location * and copies it into the buffer provided. * * Returns: * This function returns 0 when it fails, otherwise, it returns the length of * the data read into the buffer provided. **/ static int lpfc_idiag_queacc_read_qe(char *pbuffer, int len, struct lpfc_queue *pque, uint32_t index) { int offset, esize; uint32_t *pentry; if (!pbuffer || !pque) return 0; esize = pque->entry_size; len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, "QE-INDEX[%04d]:\n", index); offset = 0; pentry = pque->qe[index].address; while (esize > 0) { len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, "%08x ", *pentry); pentry++; offset += sizeof(uint32_t); esize -= sizeof(uint32_t); if (esize > 0 && !(offset % (4 * sizeof(uint32_t)))) len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, "\n"); } len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, "\n"); return len; } /** * lpfc_idiag_queacc_read - idiag debugfs read port queue * @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 device queue memory according to the * idiag command, and copies to user @buf. Depending on the queue dump read * command setup, it does either a single queue entry read or browing through * all entries of the queue. * * 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_queacc_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) { struct lpfc_debug *debug = file->private_data; uint32_t last_index, index, count; struct lpfc_queue *pque = NULL; char *pbuffer; int len = 0; /* This is a user read operation */ debug->op = LPFC_IDIAG_OP_RD; if (!debug->buffer) debug->buffer = kmalloc(LPFC_QUE_ACC_BUF_SIZE, GFP_KERNEL); if (!debug->buffer) return 0; pbuffer = debug->buffer; if (*ppos) return 0; if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) { index = idiag.cmd.data[2]; count = idiag.cmd.data[3]; pque = (struct lpfc_queue *)idiag.ptr_private; } else return 0; /* Browse the queue starting from index */ if (count == LPFC_QUE_ACC_BROWSE) goto que_browse; /* Read a single entry from the queue */ len = lpfc_idiag_queacc_read_qe(pbuffer, len, pque, index); return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); que_browse: /* Browse all entries from the queue */ last_index = idiag.offset.last_rd; index = last_index; while (len < LPFC_QUE_ACC_SIZE - pque->entry_size) { len = lpfc_idiag_queacc_read_qe(pbuffer, len, pque, index); index++; if (index > pque->entry_count - 1) break; } /* Set up the offset for next portion of pci cfg read */ if (index > pque->entry_count - 1) index = 0; idiag.offset.last_rd = index; return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); } /** * lpfc_idiag_queacc_write - Syntax check and set up idiag queacc 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 port queue read (dump) or write (set) command * accordingly. In the case of port queue read command, it sets up the command * in the idiag command struct for the following debugfs read operation. In * the case of port queue write operation, it executes the write operation * into the port queue entry 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_queacc_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 qidx, quetp, queid, index, count, offset, value; uint32_t *pentry; struct lpfc_queue *pque; int rc; /* 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; /* Get and sanity check on command feilds */ quetp = idiag.cmd.data[0]; queid = idiag.cmd.data[1]; index = idiag.cmd.data[2]; count = idiag.cmd.data[3]; offset = idiag.cmd.data[4]; value = idiag.cmd.data[5]; /* Sanity check on command line arguments */ if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR || idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST || idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) { if (rc != LPFC_QUE_ACC_WR_CMD_ARG) goto error_out; if (count != 1) goto error_out; } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) { if (rc != LPFC_QUE_ACC_RD_CMD_ARG) goto error_out; } else goto error_out; switch (quetp) { case LPFC_IDIAG_EQ: /* Slow-path event queue */ if (phba->sli4_hba.sp_eq->queue_id == queid) { /* Sanity check */ rc = lpfc_idiag_que_param_check( phba->sli4_hba.sp_eq, index, count); if (rc) goto error_out; idiag.ptr_private = phba->sli4_hba.sp_eq; goto pass_check; } /* Fast-path event queue */ for (qidx = 0; qidx < phba->cfg_fcp_eq_count; qidx++) { if (phba->sli4_hba.fp_eq[qidx]->queue_id == queid) { /* Sanity check */ rc = lpfc_idiag_que_param_check( phba->sli4_hba.fp_eq[qidx], index, count); if (rc) goto error_out; idiag.ptr_private = phba->sli4_hba.fp_eq[qidx]; goto pass_check; } } goto error_out; break; case LPFC_IDIAG_CQ: /* MBX complete queue */ if (phba->sli4_hba.mbx_cq->queue_id == queid) { /* Sanity check */ rc = lpfc_idiag_que_param_check( phba->sli4_hba.mbx_cq, index, count); if (rc) goto error_out; idiag.ptr_private = phba->sli4_hba.mbx_cq; goto pass_check; } /* ELS complete queue */ if (phba->sli4_hba.els_cq->queue_id == queid) { /* Sanity check */ rc = lpfc_idiag_que_param_check( phba->sli4_hba.els_cq, index, count); if (rc) goto error_out; idiag.ptr_private = phba->sli4_hba.els_cq; goto pass_check; } /* FCP complete queue */ qidx = 0; do { if (phba->sli4_hba.fcp_cq[qidx]->queue_id == queid) { /* Sanity check */ rc = lpfc_idiag_que_param_check( phba->sli4_hba.fcp_cq[qidx], index, count); if (rc) goto error_out; idiag.ptr_private = phba->sli4_hba.fcp_cq[qidx]; goto pass_check; } } while (++qidx < phba->cfg_fcp_eq_count); goto error_out; break; case LPFC_IDIAG_MQ: /* MBX work queue */ if (phba->sli4_hba.mbx_wq->queue_id == queid) { /* Sanity check */ rc = lpfc_idiag_que_param_check( phba->sli4_hba.mbx_wq, index, count); if (rc) goto error_out; idiag.ptr_private = phba->sli4_hba.mbx_wq; goto pass_check; } break; case LPFC_IDIAG_WQ: /* ELS work queue */ if (phba->sli4_hba.els_wq->queue_id == queid) { /* Sanity check */ rc = lpfc_idiag_que_param_check( phba->sli4_hba.els_wq, index, count); if (rc) goto error_out; idiag.ptr_private = phba->sli4_hba.els_wq; goto pass_check; } /* FCP work queue */ for (qidx = 0; qidx < phba->cfg_fcp_wq_count; qidx++) { if (phba->sli4_hba.fcp_wq[qidx]->queue_id == queid) { /* Sanity check */ rc = lpfc_idiag_que_param_check( phba->sli4_hba.fcp_wq[qidx], index, count); if (rc) goto error_out; idiag.ptr_private = phba->sli4_hba.fcp_wq[qidx]; goto pass_check; } } goto error_out; break; case LPFC_IDIAG_RQ: /* HDR queue */ if (phba->sli4_hba.hdr_rq->queue_id == queid) { /* Sanity check */ rc = lpfc_idiag_que_param_check( phba->sli4_hba.hdr_rq, index, count); if (rc) goto error_out; idiag.ptr_private = phba->sli4_hba.hdr_rq; goto pass_check; } /* DAT queue */ if (phba->sli4_hba.dat_rq->queue_id == queid) { /* Sanity check */ rc = lpfc_idiag_que_param_check( phba->sli4_hba.dat_rq, index, count); if (rc) goto error_out; idiag.ptr_private = phba->sli4_hba.dat_rq; goto pass_check; } goto error_out; break; default: goto error_out; break; } pass_check: if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) { if (count == LPFC_QUE_ACC_BROWSE) idiag.offset.last_rd = index; } if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR || idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST || idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) { /* Additional sanity checks on write operation */ pque = (struct lpfc_queue *)idiag.ptr_private; if (offset > pque->entry_size/sizeof(uint32_t) - 1) goto error_out; pentry = pque->qe[index].address; pentry += offset; if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR) *pentry = value; if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST) *pentry |= value; if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) *pentry &= ~value; } return nbytes; error_out: /* Clean out command structure on command error out */ memset(&idiag, 0, sizeof(idiag)); return -EINVAL; } /** * lpfc_idiag_drbacc_read_reg - idiag debugfs read a doorbell register * @phba: The pointer to hba structure. * @pbuffer: The pointer to the buffer to copy the data to. * @len: The lenght of bytes to copied. * @drbregid: The id to doorbell registers. * * Description: * This routine reads a doorbell register and copies its content to the * user buffer pointed to by @pbuffer. * * Returns: * This function returns the amount of data that was copied into @pbuffer. **/ static int lpfc_idiag_drbacc_read_reg(struct lpfc_hba *phba, char *pbuffer, int len, uint32_t drbregid) { if (!pbuffer) return 0; switch (drbregid) { case LPFC_DRB_EQCQ: len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len, "EQCQ-DRB-REG: 0x%08x\n", readl(phba->sli4_hba.EQCQDBregaddr)); break; case LPFC_DRB_MQ: len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len, "MQ-DRB-REG: 0x%08x\n", readl(phba->sli4_hba.MQDBregaddr)); break; case LPFC_DRB_WQ: len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len, "WQ-DRB-REG: 0x%08x\n", readl(phba->sli4_hba.WQDBregaddr)); break; case LPFC_DRB_RQ: len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len, "RQ-DRB-REG: 0x%08x\n", readl(phba->sli4_hba.RQDBregaddr)); break; default: break; } return len; } /** * lpfc_idiag_drbacc_read - idiag debugfs read port doorbell * @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 device doorbell register according * to the idiag command, and copies to user @buf. Depending on the doorbell * register read command setup, it does either a single doorbell register * read or dump all doorbell registers. * * 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_drbacc_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; uint32_t drb_reg_id, i; char *pbuffer; int len = 0; /* This is a user read operation */ debug->op = LPFC_IDIAG_OP_RD; if (!debug->buffer) debug->buffer = kmalloc(LPFC_DRB_ACC_BUF_SIZE, GFP_KERNEL); if (!debug->buffer) return 0; pbuffer = debug->buffer; if (*ppos) return 0; if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_RD) drb_reg_id = idiag.cmd.data[0]; else return 0; if (drb_reg_id == LPFC_DRB_ACC_ALL) for (i = 1; i <= LPFC_DRB_MAX; i++) len = lpfc_idiag_drbacc_read_reg(phba, pbuffer, len, i); else len = lpfc_idiag_drbacc_read_reg(phba, pbuffer, len, drb_reg_id); return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); } /** * lpfc_idiag_drbacc_write - Syntax check and set up idiag drbacc 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 port doorbell register read (dump) or write * (set) command accordingly. In the case of port queue read command, it sets * up the command in the idiag command struct for the following debugfs read * operation. In the case of port doorbell register write operation, it * executes the write operation into the port doorbell register 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_drbacc_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 drb_reg_id, value, reg_val; void __iomem *drb_reg; int rc; /* 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; /* Sanity check on command line arguments */ drb_reg_id = idiag.cmd.data[0]; value = idiag.cmd.data[1]; if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR || idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST || idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) { if (rc != LPFC_DRB_ACC_WR_CMD_ARG) goto error_out; if (drb_reg_id > LPFC_DRB_MAX) goto error_out; } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_RD) { if (rc != LPFC_DRB_ACC_RD_CMD_ARG) goto error_out; if ((drb_reg_id > LPFC_DRB_MAX) && (drb_reg_id != LPFC_DRB_ACC_ALL)) goto error_out; } else goto error_out; /* Perform the write access operation */ if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR || idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST || idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) { switch (drb_reg_id) { case LPFC_DRB_EQCQ: drb_reg = phba->sli4_hba.EQCQDBregaddr; break; case LPFC_DRB_MQ: drb_reg = phba->sli4_hba.MQDBregaddr; break; case LPFC_DRB_WQ: drb_reg = phba->sli4_hba.WQDBregaddr; break; case LPFC_DRB_RQ: drb_reg = phba->sli4_hba.RQDBregaddr; break; default: goto error_out; } if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR) reg_val = value; if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST) { reg_val = readl(drb_reg); reg_val |= value; } if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) { reg_val = readl(drb_reg); reg_val &= ~value; } writel(reg_val, drb_reg); readl(drb_reg); /* flush */ } return nbytes; error_out: /* Clean out command structure on command error out */ memset(&idiag, 0, sizeof(idiag)); return -EINVAL; } #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, }; #undef lpfc_idiag_op_queacc static const struct file_operations lpfc_idiag_op_queAcc = { .owner = THIS_MODULE, .open = lpfc_idiag_open, .llseek = lpfc_debugfs_lseek, .read = lpfc_idiag_queacc_read, .write = lpfc_idiag_queacc_write, .release = lpfc_idiag_cmd_release, }; #undef lpfc_idiag_op_drbacc static const struct file_operations lpfc_idiag_op_drbAcc = { .owner = THIS_MODULE, .open = lpfc_idiag_open, .llseek = lpfc_debugfs_lseek, .read = lpfc_idiag_drbacc_read, .write = lpfc_idiag_drbacc_write, .release = lpfc_idiag_cmd_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 Can't 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 Can't 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; } } /* iDiag access PCI function queue */ snprintf(name, sizeof(name), "queAcc"); if (!phba->idiag_que_acc) { phba->idiag_que_acc = debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, phba->idiag_root, phba, &lpfc_idiag_op_queAcc); if (!phba->idiag_que_acc) { lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, "2926 Can't create idiag debugfs\n"); goto debug_failed; } } /* iDiag access PCI function doorbell registers */ snprintf(name, sizeof(name), "drbAcc"); if (!phba->idiag_drb_acc) { phba->idiag_drb_acc = debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, phba->idiag_root, phba, &lpfc_idiag_op_drbAcc); if (!phba->idiag_drb_acc) { lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, "2927 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_drb_acc) { /* iDiag drbAcc */ debugfs_remove(phba->idiag_drb_acc); phba->idiag_drb_acc = NULL; } if (phba->idiag_que_acc) { /* iDiag queAcc */ debugfs_remove(phba->idiag_que_acc); phba->idiag_que_acc = NULL; } 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; }