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linux-next/drivers/scsi/mpt3sas/mpt3sas_trigger_diag.c
Sreekanth Reddy a03bd153b1 mpt2sas, mpt3sas: Update attribution language to Avago 
Copyright, Trademark & Confidentiality legal statements throughout the
source code changed from LSI to Avago.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2015-01-13 16:27:27 +01:00

435 lines
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/*
* This module provides common API to set Diagnostic trigger for MPT
* (Message Passing Technology) based controllers
*
* This code is based on drivers/scsi/mpt3sas/mpt3sas_trigger_diag.c
* Copyright (C) 2012-2014 LSI Corporation
* Copyright (C) 2013-2014 Avago Technologies
* (mailto: MPT-FusionLinux.pdl@avagotech.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* NO WARRANTY
* THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
* CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
* LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
* solely responsible for determining the appropriateness of using and
* distributing the Program and assumes all risks associated with its
* exercise of rights under this Agreement, including but not limited to
* the risks and costs of program errors, damage to or loss of data,
* programs or equipment, and unavailability or interruption of operations.
* DISCLAIMER OF LIABILITY
* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
* HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/compat.h>
#include <linux/poll.h>
#include <linux/io.h>
#include <linux/uaccess.h>
#include "mpt3sas_base.h"
/**
* _mpt3sas_raise_sigio - notifiy app
* @ioc: per adapter object
* @event_data:
*/
static void
_mpt3sas_raise_sigio(struct MPT3SAS_ADAPTER *ioc,
struct SL_WH_TRIGGERS_EVENT_DATA_T *event_data)
{
Mpi2EventNotificationReply_t *mpi_reply;
u16 sz, event_data_sz;
unsigned long flags;
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n",
ioc->name, __func__));
sz = offsetof(Mpi2EventNotificationReply_t, EventData) +
sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T) + 4;
mpi_reply = kzalloc(sz, GFP_KERNEL);
if (!mpi_reply)
goto out;
mpi_reply->Event = cpu_to_le16(MPI3_EVENT_DIAGNOSTIC_TRIGGER_FIRED);
event_data_sz = (sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T) + 4) / 4;
mpi_reply->EventDataLength = cpu_to_le16(event_data_sz);
memcpy(&mpi_reply->EventData, event_data,
sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T));
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT
"%s: add to driver event log\n",
ioc->name, __func__));
mpt3sas_ctl_add_to_event_log(ioc, mpi_reply);
kfree(mpi_reply);
out:
/* clearing the diag_trigger_active flag */
spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT
"%s: clearing diag_trigger_active flag\n",
ioc->name, __func__));
ioc->diag_trigger_active = 0;
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT "%s: exit\n", ioc->name,
__func__));
}
/**
* mpt3sas_process_trigger_data - process the event data for the trigger
* @ioc: per adapter object
* @event_data:
*/
void
mpt3sas_process_trigger_data(struct MPT3SAS_ADAPTER *ioc,
struct SL_WH_TRIGGERS_EVENT_DATA_T *event_data)
{
u8 issue_reset = 0;
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n",
ioc->name, __func__));
/* release the diag buffer trace */
if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
MPT3_DIAG_BUFFER_IS_RELEASED) == 0) {
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT
"%s: release trace diag buffer\n", ioc->name, __func__));
mpt3sas_send_diag_release(ioc, MPI2_DIAG_BUF_TYPE_TRACE,
&issue_reset);
}
_mpt3sas_raise_sigio(ioc, event_data);
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT "%s: exit\n", ioc->name,
__func__));
}
/**
* mpt3sas_trigger_master - Master trigger handler
* @ioc: per adapter object
* @trigger_bitmask:
*
*/
void
mpt3sas_trigger_master(struct MPT3SAS_ADAPTER *ioc, u32 trigger_bitmask)
{
struct SL_WH_TRIGGERS_EVENT_DATA_T event_data;
unsigned long flags;
u8 found_match = 0;
spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
if (trigger_bitmask & MASTER_TRIGGER_FW_FAULT ||
trigger_bitmask & MASTER_TRIGGER_ADAPTER_RESET)
goto by_pass_checks;
/* check to see if trace buffers are currently registered */
if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
return;
}
/* check to see if trace buffers are currently released */
if (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
MPT3_DIAG_BUFFER_IS_RELEASED) {
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
return;
}
by_pass_checks:
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT
"%s: enter - trigger_bitmask = 0x%08x\n",
ioc->name, __func__, trigger_bitmask));
/* don't send trigger if an trigger is currently active */
if (ioc->diag_trigger_active) {
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
goto out;
}
/* check for the trigger condition */
if (ioc->diag_trigger_master.MasterData & trigger_bitmask) {
found_match = 1;
ioc->diag_trigger_active = 1;
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT
"%s: setting diag_trigger_active flag\n",
ioc->name, __func__));
}
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
if (!found_match)
goto out;
memset(&event_data, 0, sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T));
event_data.trigger_type = MPT3SAS_TRIGGER_MASTER;
event_data.u.master.MasterData = trigger_bitmask;
if (trigger_bitmask & MASTER_TRIGGER_FW_FAULT ||
trigger_bitmask & MASTER_TRIGGER_ADAPTER_RESET)
_mpt3sas_raise_sigio(ioc, &event_data);
else
mpt3sas_send_trigger_data_event(ioc, &event_data);
out:
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT "%s: exit\n", ioc->name,
__func__));
}
/**
* mpt3sas_trigger_event - Event trigger handler
* @ioc: per adapter object
* @event:
* @log_entry_qualifier:
*
*/
void
mpt3sas_trigger_event(struct MPT3SAS_ADAPTER *ioc, u16 event,
u16 log_entry_qualifier)
{
struct SL_WH_TRIGGERS_EVENT_DATA_T event_data;
struct SL_WH_EVENT_TRIGGER_T *event_trigger;
int i;
unsigned long flags;
u8 found_match;
spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
/* check to see if trace buffers are currently registered */
if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
return;
}
/* check to see if trace buffers are currently released */
if (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
MPT3_DIAG_BUFFER_IS_RELEASED) {
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
return;
}
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT
"%s: enter - event = 0x%04x, log_entry_qualifier = 0x%04x\n",
ioc->name, __func__, event, log_entry_qualifier));
/* don't send trigger if an trigger is currently active */
if (ioc->diag_trigger_active) {
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
goto out;
}
/* check for the trigger condition */
event_trigger = ioc->diag_trigger_event.EventTriggerEntry;
for (i = 0 , found_match = 0; i < ioc->diag_trigger_event.ValidEntries
&& !found_match; i++, event_trigger++) {
if (event_trigger->EventValue != event)
continue;
if (event == MPI2_EVENT_LOG_ENTRY_ADDED) {
if (event_trigger->LogEntryQualifier ==
log_entry_qualifier)
found_match = 1;
continue;
}
found_match = 1;
ioc->diag_trigger_active = 1;
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT
"%s: setting diag_trigger_active flag\n",
ioc->name, __func__));
}
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
if (!found_match)
goto out;
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT
"%s: setting diag_trigger_active flag\n",
ioc->name, __func__));
memset(&event_data, 0, sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T));
event_data.trigger_type = MPT3SAS_TRIGGER_EVENT;
event_data.u.event.EventValue = event;
event_data.u.event.LogEntryQualifier = log_entry_qualifier;
mpt3sas_send_trigger_data_event(ioc, &event_data);
out:
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT "%s: exit\n", ioc->name,
__func__));
}
/**
* mpt3sas_trigger_scsi - SCSI trigger handler
* @ioc: per adapter object
* @sense_key:
* @asc:
* @ascq:
*
*/
void
mpt3sas_trigger_scsi(struct MPT3SAS_ADAPTER *ioc, u8 sense_key, u8 asc,
u8 ascq)
{
struct SL_WH_TRIGGERS_EVENT_DATA_T event_data;
struct SL_WH_SCSI_TRIGGER_T *scsi_trigger;
int i;
unsigned long flags;
u8 found_match;
spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
/* check to see if trace buffers are currently registered */
if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
return;
}
/* check to see if trace buffers are currently released */
if (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
MPT3_DIAG_BUFFER_IS_RELEASED) {
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
return;
}
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT
"%s: enter - sense_key = 0x%02x, asc = 0x%02x, ascq = 0x%02x\n",
ioc->name, __func__, sense_key, asc, ascq));
/* don't send trigger if an trigger is currently active */
if (ioc->diag_trigger_active) {
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
goto out;
}
/* check for the trigger condition */
scsi_trigger = ioc->diag_trigger_scsi.SCSITriggerEntry;
for (i = 0 , found_match = 0; i < ioc->diag_trigger_scsi.ValidEntries
&& !found_match; i++, scsi_trigger++) {
if (scsi_trigger->SenseKey != sense_key)
continue;
if (!(scsi_trigger->ASC == 0xFF || scsi_trigger->ASC == asc))
continue;
if (!(scsi_trigger->ASCQ == 0xFF || scsi_trigger->ASCQ == ascq))
continue;
found_match = 1;
ioc->diag_trigger_active = 1;
}
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
if (!found_match)
goto out;
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT
"%s: setting diag_trigger_active flag\n",
ioc->name, __func__));
memset(&event_data, 0, sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T));
event_data.trigger_type = MPT3SAS_TRIGGER_SCSI;
event_data.u.scsi.SenseKey = sense_key;
event_data.u.scsi.ASC = asc;
event_data.u.scsi.ASCQ = ascq;
mpt3sas_send_trigger_data_event(ioc, &event_data);
out:
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT "%s: exit\n", ioc->name,
__func__));
}
/**
* mpt3sas_trigger_mpi - MPI trigger handler
* @ioc: per adapter object
* @ioc_status:
* @loginfo:
*
*/
void
mpt3sas_trigger_mpi(struct MPT3SAS_ADAPTER *ioc, u16 ioc_status, u32 loginfo)
{
struct SL_WH_TRIGGERS_EVENT_DATA_T event_data;
struct SL_WH_MPI_TRIGGER_T *mpi_trigger;
int i;
unsigned long flags;
u8 found_match;
spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
/* check to see if trace buffers are currently registered */
if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
return;
}
/* check to see if trace buffers are currently released */
if (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
MPT3_DIAG_BUFFER_IS_RELEASED) {
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
return;
}
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT
"%s: enter - ioc_status = 0x%04x, loginfo = 0x%08x\n",
ioc->name, __func__, ioc_status, loginfo));
/* don't send trigger if an trigger is currently active */
if (ioc->diag_trigger_active) {
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
goto out;
}
/* check for the trigger condition */
mpi_trigger = ioc->diag_trigger_mpi.MPITriggerEntry;
for (i = 0 , found_match = 0; i < ioc->diag_trigger_mpi.ValidEntries
&& !found_match; i++, mpi_trigger++) {
if (mpi_trigger->IOCStatus != ioc_status)
continue;
if (!(mpi_trigger->IocLogInfo == 0xFFFFFFFF ||
mpi_trigger->IocLogInfo == loginfo))
continue;
found_match = 1;
ioc->diag_trigger_active = 1;
}
spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
if (!found_match)
goto out;
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT
"%s: setting diag_trigger_active flag\n",
ioc->name, __func__));
memset(&event_data, 0, sizeof(struct SL_WH_TRIGGERS_EVENT_DATA_T));
event_data.trigger_type = MPT3SAS_TRIGGER_MPI;
event_data.u.mpi.IOCStatus = ioc_status;
event_data.u.mpi.IocLogInfo = loginfo;
mpt3sas_send_trigger_data_event(ioc, &event_data);
out:
dTriggerDiagPrintk(ioc, pr_info(MPT3SAS_FMT "%s: exit\n", ioc->name,
__func__));
}
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