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linux-next/drivers/scsi/lpfc/lpfc_debugfs.c
Linus Torvalds 5d32c88f0b Merge branch 'akpm' (Andrew's patch-bomb) 
Merge batch of fixes from Andrew Morton:
 "The simple_open() cleanup was held back while I wanted for laggards to
  merge things.

  I still need to send a few checkpoint/restore patches.  I've been
  wobbly about merging them because I'm wobbly about the overall
  prospects for success of the project.  But after speaking with Pavel
  at the LSF conference, it sounds like they're further toward
  completion than I feared - apparently davem is at the "has stopped
  complaining" stage regarding the net changes.  So I need to go back
  and re-review those patchs and their (lengthy) discussion."

* emailed from Andrew Morton <akpm@linux-foundation.org>: (16 patches)
  memcg swap: use mem_cgroup_uncharge_swap fix
  backlight: add driver for DA9052/53 PMIC v1
  C6X: use set_current_blocked() and block_sigmask()
  MAINTAINERS: add entry for sparse checker
  MAINTAINERS: fix REMOTEPROC F: typo
  alpha: use set_current_blocked() and block_sigmask()
  simple_open: automatically convert to simple_open()
  scripts/coccinelle/api/simple_open.cocci: semantic patch for simple_open()
  libfs: add simple_open()
  hugetlbfs: remove unregister_filesystem() when initializing module
  drivers/rtc/rtc-88pm860x.c: fix rtc irq enable callback
  fs/xattr.c:setxattr(): improve handling of allocation failures
  fs/xattr.c:listxattr(): fall back to vmalloc() if kmalloc() failed
  fs/xattr.c: suppress page allocation failure warnings from sys_listxattr()
  sysrq: use SEND_SIG_FORCED instead of force_sig()
  proc: fix mount -t proc -o AAA
2012-04-05 15:30:34 -07:00

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/*******************************************************************
* 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 <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/module.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"
#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 <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;
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; 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;
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->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");
if (phba->sli4_hba.hdr_rq && phba->sli4_hba.dat_rq) {
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[IDIAG_QUEACC_INDEX_INDX];
count = idiag.cmd.data[IDIAG_QUEACC_COUNT_INDX];
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[IDIAG_QUEACC_QUETP_INDX];
queid = idiag.cmd.data[IDIAG_QUEACC_QUEID_INDX];
index = idiag.cmd.data[IDIAG_QUEACC_INDEX_INDX];
count = idiag.cmd.data[IDIAG_QUEACC_COUNT_INDX];
offset = idiag.cmd.data[IDIAG_QUEACC_OFFST_INDX];
value = idiag.cmd.data[IDIAG_QUEACC_VALUE_INDX];
/* 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 &&
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 */
if (phba->sli4_hba.fp_eq) {
for (qidx = 0; qidx < phba->cfg_fcp_eq_count; qidx++) {
if (phba->sli4_hba.fp_eq[qidx] &&
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 &&
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 &&
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 */
if (phba->sli4_hba.fcp_cq) {
qidx = 0;
do {
if (phba->sli4_hba.fcp_cq[qidx] &&
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 &&
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;
}
goto error_out;
break;
case LPFC_IDIAG_WQ:
/* ELS work queue */
if (phba->sli4_hba.els_wq &&
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 */
if (phba->sli4_hba.fcp_wq) {
for (qidx = 0; qidx < phba->cfg_fcp_wq_count; qidx++) {
if (!phba->sli4_hba.fcp_wq[qidx])
continue;
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 &&
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 &&
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[IDIAG_DRBACC_REGID_INDX];
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 = 0;
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[IDIAG_DRBACC_REGID_INDX];
value = idiag.cmd.data[IDIAG_DRBACC_VALUE_INDX];
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;
}
/**
* lpfc_idiag_ctlacc_read_reg - idiag debugfs read a control registers
* @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 control 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_ctlacc_read_reg(struct lpfc_hba *phba, char *pbuffer,
int len, uint32_t ctlregid)
{
if (!pbuffer)
return 0;
switch (ctlregid) {
case LPFC_CTL_PORT_SEM:
len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
"Port SemReg: 0x%08x\n",
readl(phba->sli4_hba.conf_regs_memmap_p +
LPFC_CTL_PORT_SEM_OFFSET));
break;
case LPFC_CTL_PORT_STA:
len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
"Port StaReg: 0x%08x\n",
readl(phba->sli4_hba.conf_regs_memmap_p +
LPFC_CTL_PORT_STA_OFFSET));
break;
case LPFC_CTL_PORT_CTL:
len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
"Port CtlReg: 0x%08x\n",
readl(phba->sli4_hba.conf_regs_memmap_p +
LPFC_CTL_PORT_CTL_OFFSET));
break;
case LPFC_CTL_PORT_ER1:
len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
"Port Er1Reg: 0x%08x\n",
readl(phba->sli4_hba.conf_regs_memmap_p +
LPFC_CTL_PORT_ER1_OFFSET));
break;
case LPFC_CTL_PORT_ER2:
len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
"Port Er2Reg: 0x%08x\n",
readl(phba->sli4_hba.conf_regs_memmap_p +
LPFC_CTL_PORT_ER2_OFFSET));
break;
case LPFC_CTL_PDEV_CTL:
len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
"PDev CtlReg: 0x%08x\n",
readl(phba->sli4_hba.conf_regs_memmap_p +
LPFC_CTL_PDEV_CTL_OFFSET));
break;
default:
break;
}
return len;
}
/**
* lpfc_idiag_ctlacc_read - idiag debugfs read port and device control register
* @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 port and device registers 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_ctlacc_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 ctl_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_CTL_ACC_BUF_SIZE, GFP_KERNEL);
if (!debug->buffer)
return 0;
pbuffer = debug->buffer;
if (*ppos)
return 0;
if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_RD)
ctl_reg_id = idiag.cmd.data[IDIAG_CTLACC_REGID_INDX];
else
return 0;
if (ctl_reg_id == LPFC_CTL_ACC_ALL)
for (i = 1; i <= LPFC_CTL_MAX; i++)
len = lpfc_idiag_ctlacc_read_reg(phba,
pbuffer, len, i);
else
len = lpfc_idiag_ctlacc_read_reg(phba,
pbuffer, len, ctl_reg_id);
return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
}
/**
* lpfc_idiag_ctlacc_write - Syntax check and set up idiag ctlacc 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 and device control register read (dump)
* or write (set) command 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_ctlacc_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 ctl_reg_id, value, reg_val = 0;
void __iomem *ctl_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 */
ctl_reg_id = idiag.cmd.data[IDIAG_CTLACC_REGID_INDX];
value = idiag.cmd.data[IDIAG_CTLACC_VALUE_INDX];
if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_WR ||
idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_ST ||
idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_CL) {
if (rc != LPFC_CTL_ACC_WR_CMD_ARG)
goto error_out;
if (ctl_reg_id > LPFC_CTL_MAX)
goto error_out;
} else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_RD) {
if (rc != LPFC_CTL_ACC_RD_CMD_ARG)
goto error_out;
if ((ctl_reg_id > LPFC_CTL_MAX) &&
(ctl_reg_id != LPFC_CTL_ACC_ALL))
goto error_out;
} else
goto error_out;
/* Perform the write access operation */
if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_WR ||
idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_ST ||
idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_CL) {
switch (ctl_reg_id) {
case LPFC_CTL_PORT_SEM:
ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
LPFC_CTL_PORT_SEM_OFFSET;
break;
case LPFC_CTL_PORT_STA:
ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
LPFC_CTL_PORT_STA_OFFSET;
break;
case LPFC_CTL_PORT_CTL:
ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
LPFC_CTL_PORT_CTL_OFFSET;
break;
case LPFC_CTL_PORT_ER1:
ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
LPFC_CTL_PORT_ER1_OFFSET;
break;
case LPFC_CTL_PORT_ER2:
ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
LPFC_CTL_PORT_ER2_OFFSET;
break;
case LPFC_CTL_PDEV_CTL:
ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
LPFC_CTL_PDEV_CTL_OFFSET;
break;
default:
goto error_out;
}
if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_WR)
reg_val = value;
if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_ST) {
reg_val = readl(ctl_reg);
reg_val |= value;
}
if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_CL) {
reg_val = readl(ctl_reg);
reg_val &= ~value;
}
writel(reg_val, ctl_reg);
readl(ctl_reg); /* flush */
}
return nbytes;
error_out:
/* Clean out command structure on command error out */
memset(&idiag, 0, sizeof(idiag));
return -EINVAL;
}
/**
* lpfc_idiag_mbxacc_get_setup - idiag debugfs get mailbox access setup
* @phba: Pointer to HBA context object.
* @pbuffer: Pointer to data buffer.
*
* Description:
* This routine gets the driver mailbox access debugfs setup information.
*
* 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 int
lpfc_idiag_mbxacc_get_setup(struct lpfc_hba *phba, char *pbuffer)
{
uint32_t mbx_dump_map, mbx_dump_cnt, mbx_word_cnt, mbx_mbox_cmd;
int len = 0;
mbx_mbox_cmd = idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX];
mbx_dump_map = idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX];
mbx_dump_cnt = idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX];
mbx_word_cnt = idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX];
len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len,
"mbx_dump_map: 0x%08x\n", mbx_dump_map);
len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len,
"mbx_dump_cnt: %04d\n", mbx_dump_cnt);
len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len,
"mbx_word_cnt: %04d\n", mbx_word_cnt);
len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len,
"mbx_mbox_cmd: 0x%02x\n", mbx_mbox_cmd);
return len;
}
/**
* lpfc_idiag_mbxacc_read - idiag debugfs read on mailbox access
* @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 driver mailbox access debugfs setup
* information.
*
* 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_mbxacc_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;
char *pbuffer;
int len = 0;
/* This is a user read operation */
debug->op = LPFC_IDIAG_OP_RD;
if (!debug->buffer)
debug->buffer = kmalloc(LPFC_MBX_ACC_BUF_SIZE, GFP_KERNEL);
if (!debug->buffer)
return 0;
pbuffer = debug->buffer;
if (*ppos)
return 0;
if ((idiag.cmd.opcode != LPFC_IDIAG_CMD_MBXACC_DP) &&
(idiag.cmd.opcode != LPFC_IDIAG_BSG_MBXACC_DP))
return 0;
len = lpfc_idiag_mbxacc_get_setup(phba, pbuffer);
return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
}
/**
* lpfc_idiag_mbxacc_write - Syntax check and set up idiag mbxacc 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 driver mailbox command (dump) and sets up the
* necessary states in the idiag command struct 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_mbxacc_write(struct file *file, const char __user *buf,
size_t nbytes, loff_t *ppos)
{
struct lpfc_debug *debug = file->private_data;
uint32_t mbx_dump_map, mbx_dump_cnt, mbx_word_cnt, mbx_mbox_cmd;
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 */
mbx_mbox_cmd = idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX];
mbx_dump_map = idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX];
mbx_dump_cnt = idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX];
mbx_word_cnt = idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX];
if (idiag.cmd.opcode == LPFC_IDIAG_CMD_MBXACC_DP) {
if (!(mbx_dump_map & LPFC_MBX_DMP_MBX_ALL))
goto error_out;
if ((mbx_dump_map & ~LPFC_MBX_DMP_MBX_ALL) &&
(mbx_dump_map != LPFC_MBX_DMP_ALL))
goto error_out;
if (mbx_word_cnt > sizeof(MAILBOX_t))
goto error_out;
} else if (idiag.cmd.opcode == LPFC_IDIAG_BSG_MBXACC_DP) {
if (!(mbx_dump_map & LPFC_BSG_DMP_MBX_ALL))
goto error_out;
if ((mbx_dump_map & ~LPFC_BSG_DMP_MBX_ALL) &&
(mbx_dump_map != LPFC_MBX_DMP_ALL))
goto error_out;
if (mbx_word_cnt > (BSG_MBOX_SIZE)/4)
goto error_out;
if (mbx_mbox_cmd != 0x9b)
goto error_out;
} else
goto error_out;
if (mbx_word_cnt == 0)
goto error_out;
if (rc != LPFC_MBX_DMP_ARG)
goto error_out;
if (mbx_mbox_cmd & ~0xff)
goto error_out;
/* condition for stop mailbox dump */
if (mbx_dump_cnt == 0)
goto reset_out;
return nbytes;
reset_out:
/* Clean out command structure on command error out */
memset(&idiag, 0, sizeof(idiag));
return nbytes;
error_out:
/* Clean out command structure on command error out */
memset(&idiag, 0, sizeof(idiag));
return -EINVAL;
}
/**
* lpfc_idiag_extacc_avail_get - get the available extents information
* @phba: pointer to lpfc hba data structure.
* @pbuffer: pointer to internal buffer.
* @len: length into the internal buffer data has been copied.
*
* Description:
* This routine is to get the available extent information.
*
* Returns:
* overall lenth of the data read into the internal buffer.
**/
static int
lpfc_idiag_extacc_avail_get(struct lpfc_hba *phba, char *pbuffer, int len)
{
uint16_t ext_cnt, ext_size;
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\nAvailable Extents Information:\n");
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\tPort Available VPI extents: ");
lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_VPI,
&ext_cnt, &ext_size);
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"Count %3d, Size %3d\n", ext_cnt, ext_size);
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\tPort Available VFI extents: ");
lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_VFI,
&ext_cnt, &ext_size);
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"Count %3d, Size %3d\n", ext_cnt, ext_size);
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\tPort Available RPI extents: ");
lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_RPI,
&ext_cnt, &ext_size);
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"Count %3d, Size %3d\n", ext_cnt, ext_size);
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\tPort Available XRI extents: ");
lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_XRI,
&ext_cnt, &ext_size);
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"Count %3d, Size %3d\n", ext_cnt, ext_size);
return len;
}
/**
* lpfc_idiag_extacc_alloc_get - get the allocated extents information
* @phba: pointer to lpfc hba data structure.
* @pbuffer: pointer to internal buffer.
* @len: length into the internal buffer data has been copied.
*
* Description:
* This routine is to get the allocated extent information.
*
* Returns:
* overall lenth of the data read into the internal buffer.
**/
static int
lpfc_idiag_extacc_alloc_get(struct lpfc_hba *phba, char *pbuffer, int len)
{
uint16_t ext_cnt, ext_size;
int rc;
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\nAllocated Extents Information:\n");
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\tHost Allocated VPI extents: ");
rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_VPI,
&ext_cnt, &ext_size);
if (!rc)
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"Port %d Extent %3d, Size %3d\n",
phba->brd_no, ext_cnt, ext_size);
else
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"N/A\n");
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\tHost Allocated VFI extents: ");
rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_VFI,
&ext_cnt, &ext_size);
if (!rc)
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"Port %d Extent %3d, Size %3d\n",
phba->brd_no, ext_cnt, ext_size);
else
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"N/A\n");
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\tHost Allocated RPI extents: ");
rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_RPI,
&ext_cnt, &ext_size);
if (!rc)
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"Port %d Extent %3d, Size %3d\n",
phba->brd_no, ext_cnt, ext_size);
else
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"N/A\n");
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\tHost Allocated XRI extents: ");
rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_XRI,
&ext_cnt, &ext_size);
if (!rc)
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"Port %d Extent %3d, Size %3d\n",
phba->brd_no, ext_cnt, ext_size);
else
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"N/A\n");
return len;
}
/**
* lpfc_idiag_extacc_drivr_get - get driver extent information
* @phba: pointer to lpfc hba data structure.
* @pbuffer: pointer to internal buffer.
* @len: length into the internal buffer data has been copied.
*
* Description:
* This routine is to get the driver extent information.
*
* Returns:
* overall lenth of the data read into the internal buffer.
**/
static int
lpfc_idiag_extacc_drivr_get(struct lpfc_hba *phba, char *pbuffer, int len)
{
struct lpfc_rsrc_blks *rsrc_blks;
int index;
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\nDriver Extents Information:\n");
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\tVPI extents:\n");
index = 0;
list_for_each_entry(rsrc_blks, &phba->lpfc_vpi_blk_list, list) {
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\t\tBlock %3d: Start %4d, Count %4d\n",
index, rsrc_blks->rsrc_start,
rsrc_blks->rsrc_size);
index++;
}
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\tVFI extents:\n");
index = 0;
list_for_each_entry(rsrc_blks, &phba->sli4_hba.lpfc_vfi_blk_list,
list) {
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\t\tBlock %3d: Start %4d, Count %4d\n",
index, rsrc_blks->rsrc_start,
rsrc_blks->rsrc_size);
index++;
}
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\tRPI extents:\n");
index = 0;
list_for_each_entry(rsrc_blks, &phba->sli4_hba.lpfc_rpi_blk_list,
list) {
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\t\tBlock %3d: Start %4d, Count %4d\n",
index, rsrc_blks->rsrc_start,
rsrc_blks->rsrc_size);
index++;
}
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\tXRI extents:\n");
index = 0;
list_for_each_entry(rsrc_blks, &phba->sli4_hba.lpfc_xri_blk_list,
list) {
len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
"\t\tBlock %3d: Start %4d, Count %4d\n",
index, rsrc_blks->rsrc_start,
rsrc_blks->rsrc_size);
index++;
}
return len;
}
/**
* lpfc_idiag_extacc_write - Syntax check and set up idiag extacc 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 extent information access commands and sets
* up the necessary states in the idiag command struct 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_extacc_write(struct file *file, const char __user *buf,
size_t nbytes, loff_t *ppos)
{
struct lpfc_debug *debug = file->private_data;
uint32_t ext_map;
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;
ext_map = idiag.cmd.data[IDIAG_EXTACC_EXMAP_INDX];
if (idiag.cmd.opcode != LPFC_IDIAG_CMD_EXTACC_RD)
goto error_out;
if (rc != LPFC_EXT_ACC_CMD_ARG)
goto error_out;
if (!(ext_map & LPFC_EXT_ACC_ALL))
goto error_out;
return nbytes;
error_out:
/* Clean out command structure on command error out */
memset(&idiag, 0, sizeof(idiag));
return -EINVAL;
}
/**
* lpfc_idiag_extacc_read - idiag debugfs read access to extent 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 proper extent information 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_extacc_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;
char *pbuffer;
uint32_t ext_map;
int len = 0;
/* This is a user read operation */
debug->op = LPFC_IDIAG_OP_RD;
if (!debug->buffer)
debug->buffer = kmalloc(LPFC_EXT_ACC_BUF_SIZE, GFP_KERNEL);
if (!debug->buffer)
return 0;
pbuffer = debug->buffer;
if (*ppos)
return 0;
if (idiag.cmd.opcode != LPFC_IDIAG_CMD_EXTACC_RD)
return 0;
ext_map = idiag.cmd.data[IDIAG_EXTACC_EXMAP_INDX];
if (ext_map & LPFC_EXT_ACC_AVAIL)
len = lpfc_idiag_extacc_avail_get(phba, pbuffer, len);
if (ext_map & LPFC_EXT_ACC_ALLOC)
len = lpfc_idiag_extacc_alloc_get(phba, pbuffer, len);
if (ext_map & LPFC_EXT_ACC_DRIVR)
len = lpfc_idiag_extacc_drivr_get(phba, pbuffer, len);
return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
}
#undef lpfc_debugfs_op_disc_trc
static const struct file_operations lpfc_debugfs_op_disc_trc = {
.owner = THIS_MODULE,
.open = lpfc_debugfs_disc_trc_open,
.llseek = lpfc_debugfs_lseek,
.read = lpfc_debugfs_read,
.release = lpfc_debugfs_release,
};
#undef lpfc_debugfs_op_nodelist
static const struct file_operations lpfc_debugfs_op_nodelist = {
.owner = THIS_MODULE,
.open = lpfc_debugfs_nodelist_open,
.llseek = lpfc_debugfs_lseek,
.read = lpfc_debugfs_read,
.release = lpfc_debugfs_release,
};
#undef lpfc_debugfs_op_hbqinfo
static const struct file_operations lpfc_debugfs_op_hbqinfo = {
.owner = THIS_MODULE,
.open = lpfc_debugfs_hbqinfo_open,
.llseek = lpfc_debugfs_lseek,
.read = lpfc_debugfs_read,
.release = lpfc_debugfs_release,
};
#undef lpfc_debugfs_op_dumpHBASlim
static const struct file_operations lpfc_debugfs_op_dumpHBASlim = {
.owner = THIS_MODULE,
.open = lpfc_debugfs_dumpHBASlim_open,
.llseek = lpfc_debugfs_lseek,
.read = lpfc_debugfs_read,
.release = lpfc_debugfs_release,
};
#undef lpfc_debugfs_op_dumpHostSlim
static const struct file_operations lpfc_debugfs_op_dumpHostSlim = {
.owner = THIS_MODULE,
.open = lpfc_debugfs_dumpHostSlim_open,
.llseek = lpfc_debugfs_lseek,
.read = lpfc_debugfs_read,
.release = lpfc_debugfs_release,
};
#undef lpfc_debugfs_op_dumpData
static const struct file_operations lpfc_debugfs_op_dumpData = {
.owner = THIS_MODULE,
.open = lpfc_debugfs_dumpData_open,
.llseek = lpfc_debugfs_lseek,
.read = lpfc_debugfs_read,
.write = lpfc_debugfs_dumpDataDif_write,
.release = lpfc_debugfs_dumpDataDif_release,
};
#undef lpfc_debugfs_op_dumpDif
static const struct file_operations lpfc_debugfs_op_dumpDif = {
.owner = THIS_MODULE,
.open = lpfc_debugfs_dumpDif_open,
.llseek = lpfc_debugfs_lseek,
.read = lpfc_debugfs_read,
.write = lpfc_debugfs_dumpDataDif_write,
.release = lpfc_debugfs_dumpDataDif_release,
};
#undef lpfc_debugfs_op_dif_err
static const struct file_operations lpfc_debugfs_op_dif_err = {
.owner = THIS_MODULE,
.open = simple_open,
.llseek = lpfc_debugfs_lseek,
.read = lpfc_debugfs_dif_err_read,
.write = lpfc_debugfs_dif_err_write,
.release = lpfc_debugfs_dif_err_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_barAcc
static const struct file_operations lpfc_idiag_op_barAcc = {
.owner = THIS_MODULE,
.open = lpfc_idiag_open,
.llseek = lpfc_debugfs_lseek,
.read = lpfc_idiag_baracc_read,
.write = lpfc_idiag_baracc_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,
};
#undef lpfc_idiag_op_ctlAcc
static const struct file_operations lpfc_idiag_op_ctlAcc = {
.owner = THIS_MODULE,
.open = lpfc_idiag_open,
.llseek = lpfc_debugfs_lseek,
.read = lpfc_idiag_ctlacc_read,
.write = lpfc_idiag_ctlacc_write,
.release = lpfc_idiag_cmd_release,
};
#undef lpfc_idiag_op_mbxAcc
static const struct file_operations lpfc_idiag_op_mbxAcc = {
.owner = THIS_MODULE,
.open = lpfc_idiag_open,
.llseek = lpfc_debugfs_lseek,
.read = lpfc_idiag_mbxacc_read,
.write = lpfc_idiag_mbxacc_write,
.release = lpfc_idiag_cmd_release,
};
#undef lpfc_idiag_op_extAcc
static const struct file_operations lpfc_idiag_op_extAcc = {
.owner = THIS_MODULE,
.open = lpfc_idiag_open,
.llseek = lpfc_debugfs_lseek,
.read = lpfc_idiag_extacc_read,
.write = lpfc_idiag_extacc_write,
.release = lpfc_idiag_cmd_release,
};
#endif
/* lpfc_idiag_mbxacc_dump_bsg_mbox - idiag debugfs dump bsg mailbox command
* @phba: Pointer to HBA context object.
* @dmabuf: Pointer to a DMA buffer descriptor.
*
* Description:
* This routine dump a bsg pass-through non-embedded mailbox command with
* external buffer.
**/
void
lpfc_idiag_mbxacc_dump_bsg_mbox(struct lpfc_hba *phba, enum nemb_type nemb_tp,
enum mbox_type mbox_tp, enum dma_type dma_tp,
enum sta_type sta_tp,
struct lpfc_dmabuf *dmabuf, uint32_t ext_buf)
{
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
uint32_t *mbx_mbox_cmd, *mbx_dump_map, *mbx_dump_cnt, *mbx_word_cnt;
char line_buf[LPFC_MBX_ACC_LBUF_SZ];
int len = 0;
uint32_t do_dump = 0;
uint32_t *pword;
uint32_t i;
if (idiag.cmd.opcode != LPFC_IDIAG_BSG_MBXACC_DP)
return;
mbx_mbox_cmd = &idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX];
mbx_dump_map = &idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX];
mbx_dump_cnt = &idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX];
mbx_word_cnt = &idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX];
if (!(*mbx_dump_map & LPFC_MBX_DMP_ALL) ||
(*mbx_dump_cnt == 0) ||
(*mbx_word_cnt == 0))
return;
if (*mbx_mbox_cmd != 0x9B)
return;
if ((mbox_tp == mbox_rd) && (dma_tp == dma_mbox)) {
if (*mbx_dump_map & LPFC_BSG_DMP_MBX_RD_MBX) {
do_dump |= LPFC_BSG_DMP_MBX_RD_MBX;
printk(KERN_ERR "\nRead mbox command (x%x), "
"nemb:0x%x, extbuf_cnt:%d:\n",
sta_tp, nemb_tp, ext_buf);
}
}
if ((mbox_tp == mbox_rd) && (dma_tp == dma_ebuf)) {
if (*mbx_dump_map & LPFC_BSG_DMP_MBX_RD_BUF) {
do_dump |= LPFC_BSG_DMP_MBX_RD_BUF;
printk(KERN_ERR "\nRead mbox buffer (x%x), "
"nemb:0x%x, extbuf_seq:%d:\n",
sta_tp, nemb_tp, ext_buf);
}
}
if ((mbox_tp == mbox_wr) && (dma_tp == dma_mbox)) {
if (*mbx_dump_map & LPFC_BSG_DMP_MBX_WR_MBX) {
do_dump |= LPFC_BSG_DMP_MBX_WR_MBX;
printk(KERN_ERR "\nWrite mbox command (x%x), "
"nemb:0x%x, extbuf_cnt:%d:\n",
sta_tp, nemb_tp, ext_buf);
}
}
if ((mbox_tp == mbox_wr) && (dma_tp == dma_ebuf)) {
if (*mbx_dump_map & LPFC_BSG_DMP_MBX_WR_BUF) {
do_dump |= LPFC_BSG_DMP_MBX_WR_BUF;
printk(KERN_ERR "\nWrite mbox buffer (x%x), "
"nemb:0x%x, extbuf_seq:%d:\n",
sta_tp, nemb_tp, ext_buf);
}
}
/* dump buffer content */
if (do_dump) {
pword = (uint32_t *)dmabuf->virt;
for (i = 0; i < *mbx_word_cnt; i++) {
if (!(i % 8)) {
if (i != 0)
printk(KERN_ERR "%s\n", line_buf);
len = 0;
len += snprintf(line_buf+len,
LPFC_MBX_ACC_LBUF_SZ-len,
"%03d: ", i);
}
len += snprintf(line_buf+len, LPFC_MBX_ACC_LBUF_SZ-len,
"%08x ", (uint32_t)*pword);
pword++;
}
if ((i - 1) % 8)
printk(KERN_ERR "%s\n", line_buf);
(*mbx_dump_cnt)--;
}
/* Clean out command structure on reaching dump count */
if (*mbx_dump_cnt == 0)
memset(&idiag, 0, sizeof(idiag));
return;
#endif
}
/* lpfc_idiag_mbxacc_dump_issue_mbox - idiag debugfs dump issue mailbox command
* @phba: Pointer to HBA context object.
* @dmabuf: Pointer to a DMA buffer descriptor.
*
* Description:
* This routine dump a pass-through non-embedded mailbox command from issue
* mailbox command.
**/
void
lpfc_idiag_mbxacc_dump_issue_mbox(struct lpfc_hba *phba, MAILBOX_t *pmbox)
{
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
uint32_t *mbx_dump_map, *mbx_dump_cnt, *mbx_word_cnt, *mbx_mbox_cmd;
char line_buf[LPFC_MBX_ACC_LBUF_SZ];
int len = 0;
uint32_t *pword;
uint8_t *pbyte;
uint32_t i, j;
if (idiag.cmd.opcode != LPFC_IDIAG_CMD_MBXACC_DP)
return;
mbx_mbox_cmd = &idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX];
mbx_dump_map = &idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX];
mbx_dump_cnt = &idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX];
mbx_word_cnt = &idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX];
if (!(*mbx_dump_map & LPFC_MBX_DMP_MBX_ALL) ||
(*mbx_dump_cnt == 0) ||
(*mbx_word_cnt == 0))
return;
if ((*mbx_mbox_cmd != LPFC_MBX_ALL_CMD) &&
(*mbx_mbox_cmd != pmbox->mbxCommand))
return;
/* dump buffer content */
if (*mbx_dump_map & LPFC_MBX_DMP_MBX_WORD) {
printk(KERN_ERR "Mailbox command:0x%x dump by word:\n",
pmbox->mbxCommand);
pword = (uint32_t *)pmbox;
for (i = 0; i < *mbx_word_cnt; i++) {
if (!(i % 8)) {
if (i != 0)
printk(KERN_ERR "%s\n", line_buf);
len = 0;
memset(line_buf, 0, LPFC_MBX_ACC_LBUF_SZ);
len += snprintf(line_buf+len,
LPFC_MBX_ACC_LBUF_SZ-len,
"%03d: ", i);
}
len += snprintf(line_buf+len, LPFC_MBX_ACC_LBUF_SZ-len,
"%08x ",
((uint32_t)*pword) & 0xffffffff);
pword++;
}
if ((i - 1) % 8)
printk(KERN_ERR "%s\n", line_buf);
printk(KERN_ERR "\n");
}
if (*mbx_dump_map & LPFC_MBX_DMP_MBX_BYTE) {
printk(KERN_ERR "Mailbox command:0x%x dump by byte:\n",
pmbox->mbxCommand);
pbyte = (uint8_t *)pmbox;
for (i = 0; i < *mbx_word_cnt; i++) {
if (!(i % 8)) {
if (i != 0)
printk(KERN_ERR "%s\n", line_buf);
len = 0;
memset(line_buf, 0, LPFC_MBX_ACC_LBUF_SZ);
len += snprintf(line_buf+len,
LPFC_MBX_ACC_LBUF_SZ-len,
"%03d: ", i);
}
for (j = 0; j < 4; j++) {
len += snprintf(line_buf+len,
LPFC_MBX_ACC_LBUF_SZ-len,
"%02x",
((uint8_t)*pbyte) & 0xff);
pbyte++;
}
len += snprintf(line_buf+len,
LPFC_MBX_ACC_LBUF_SZ-len, " ");
}
if ((i - 1) % 8)
printk(KERN_ERR "%s\n", line_buf);
printk(KERN_ERR "\n");
}
(*mbx_dump_cnt)--;
/* Clean out command structure on reaching dump count */
if (*mbx_dump_cnt == 0)
memset(&idiag, 0, sizeof(idiag));
return;
#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 DIF Error Injections */
snprintf(name, sizeof(name), "InjErrLBA");
phba->debug_InjErrLBA =
debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
phba->hba_debugfs_root,
phba, &lpfc_debugfs_op_dif_err);
if (!phba->debug_InjErrLBA) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"0807 Cannot create debugfs InjErrLBA\n");
goto debug_failed;
}
phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF;
snprintf(name, sizeof(name), "InjErrNPortID");
phba->debug_InjErrNPortID =
debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
phba->hba_debugfs_root,
phba, &lpfc_debugfs_op_dif_err);
if (!phba->debug_InjErrNPortID) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"0809 Cannot create debugfs InjErrNPortID\n");
goto debug_failed;
}
snprintf(name, sizeof(name), "InjErrWWPN");
phba->debug_InjErrWWPN =
debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
phba->hba_debugfs_root,
phba, &lpfc_debugfs_op_dif_err);
if (!phba->debug_InjErrWWPN) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"0810 Cannot create debugfs InjErrWWPN\n");
goto debug_failed;
}
snprintf(name, sizeof(name), "writeGuardInjErr");
phba->debug_writeGuard =
debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
phba->hba_debugfs_root,
phba, &lpfc_debugfs_op_dif_err);
if (!phba->debug_writeGuard) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"0802 Cannot create debugfs writeGuard\n");
goto debug_failed;
}
snprintf(name, sizeof(name), "writeAppInjErr");
phba->debug_writeApp =
debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
phba->hba_debugfs_root,
phba, &lpfc_debugfs_op_dif_err);
if (!phba->debug_writeApp) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"0803 Cannot create debugfs writeApp\n");
goto debug_failed;
}
snprintf(name, sizeof(name), "writeRefInjErr");
phba->debug_writeRef =
debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
phba->hba_debugfs_root,
phba, &lpfc_debugfs_op_dif_err);
if (!phba->debug_writeRef) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"0804 Cannot create debugfs writeRef\n");
goto debug_failed;
}
snprintf(name, sizeof(name), "readGuardInjErr");
phba->debug_readGuard =
debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
phba->hba_debugfs_root,
phba, &lpfc_debugfs_op_dif_err);
if (!phba->debug_readGuard) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"0808 Cannot create debugfs readGuard\n");
goto debug_failed;
}
snprintf(name, sizeof(name), "readAppInjErr");
phba->debug_readApp =
debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
phba->hba_debugfs_root,
phba, &lpfc_debugfs_op_dif_err);
if (!phba->debug_readApp) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"0805 Cannot create debugfs readApp\n");
goto debug_failed;
}
snprintf(name, sizeof(name), "readRefInjErr");
phba->debug_readRef =
debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
phba->hba_debugfs_root,
phba, &lpfc_debugfs_op_dif_err);
if (!phba->debug_readRef) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"0806 Cannot create debugfs readApp\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,
"2985 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 PCI BAR access */
snprintf(name, sizeof(name), "barAcc");
if (!phba->idiag_bar_acc) {
phba->idiag_bar_acc =
debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
phba->idiag_root, phba, &lpfc_idiag_op_barAcc);
if (!phba->idiag_bar_acc) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"3056 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;
}
}
/* iDiag access PCI function control registers */
snprintf(name, sizeof(name), "ctlAcc");
if (!phba->idiag_ctl_acc) {
phba->idiag_ctl_acc =
debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
phba->idiag_root, phba, &lpfc_idiag_op_ctlAcc);
if (!phba->idiag_ctl_acc) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"2981 Can't create idiag debugfs\n");
goto debug_failed;
}
}
/* iDiag access mbox commands */
snprintf(name, sizeof(name), "mbxAcc");
if (!phba->idiag_mbx_acc) {
phba->idiag_mbx_acc =
debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
phba->idiag_root, phba, &lpfc_idiag_op_mbxAcc);
if (!phba->idiag_mbx_acc) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"2980 Can't create idiag debugfs\n");
goto debug_failed;
}
}
/* iDiag extents access commands */
if (phba->sli4_hba.extents_in_use) {
snprintf(name, sizeof(name), "extAcc");
if (!phba->idiag_ext_acc) {
phba->idiag_ext_acc =
debugfs_create_file(name,
S_IFREG|S_IRUGO|S_IWUSR,
phba->idiag_root, phba,
&lpfc_idiag_op_extAcc);
if (!phba->idiag_ext_acc) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"2986 Cant 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->debug_InjErrLBA) {
debugfs_remove(phba->debug_InjErrLBA); /* InjErrLBA */
phba->debug_InjErrLBA = NULL;
}
if (phba->debug_InjErrNPortID) { /* InjErrNPortID */
debugfs_remove(phba->debug_InjErrNPortID);
phba->debug_InjErrNPortID = NULL;
}
if (phba->debug_InjErrWWPN) {
debugfs_remove(phba->debug_InjErrWWPN); /* InjErrWWPN */
phba->debug_InjErrWWPN = NULL;
}
if (phba->debug_writeGuard) {
debugfs_remove(phba->debug_writeGuard); /* writeGuard */
phba->debug_writeGuard = NULL;
}
if (phba->debug_writeApp) {
debugfs_remove(phba->debug_writeApp); /* writeApp */
phba->debug_writeApp = NULL;
}
if (phba->debug_writeRef) {
debugfs_remove(phba->debug_writeRef); /* writeRef */
phba->debug_writeRef = NULL;
}
if (phba->debug_readGuard) {
debugfs_remove(phba->debug_readGuard); /* readGuard */
phba->debug_readGuard = NULL;
}
if (phba->debug_readApp) {
debugfs_remove(phba->debug_readApp); /* readApp */
phba->debug_readApp = NULL;
}
if (phba->debug_readRef) {
debugfs_remove(phba->debug_readRef); /* readRef */
phba->debug_readRef = 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_ext_acc) {
/* iDiag extAcc */
debugfs_remove(phba->idiag_ext_acc);
phba->idiag_ext_acc = NULL;
}
if (phba->idiag_mbx_acc) {
/* iDiag mbxAcc */
debugfs_remove(phba->idiag_mbx_acc);
phba->idiag_mbx_acc = NULL;
}
if (phba->idiag_ctl_acc) {
/* iDiag ctlAcc */
debugfs_remove(phba->idiag_ctl_acc);
phba->idiag_ctl_acc = NULL;
}
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_bar_acc) {
/* iDiag barAcc */
debugfs_remove(phba->idiag_bar_acc);
phba->idiag_bar_acc = 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;
}
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