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Commit d32a8c15 authored by Kashyap, Desai's avatar Kashyap, Desai Committed by James Bottomley
Browse files

[SCSI] mpt2sas: Added sysfs counter for ioc reset 



Added a new sysfs shost attribute called ioc_reset_count. This will
keep count of host resets (both diagnostic and message unit).

Signed-off-by: default avatarKashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@suse.de>
parent b8d7d7bb

drivers/scsi/mpt2sas/mpt2sas_base.c

+7 −2
Original line number Original line Diff line number Diff line
@@ -3402,6 +3402,7 @@ _base_make_ioc_ready(struct MPT2SAS_ADAPTER *ioc, int sleep_flag, 
    enum reset_type type)

    enum reset_type type)

{

{

	u32 ioc_state;

	u32 ioc_state;

	int rc;





	dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,

	dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,

	    __func__));

	    __func__));
@@ -3430,11 +3431,15 @@ _base_make_ioc_ready(struct MPT2SAS_ADAPTER *ioc, int sleep_flag, 




	if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL)

	if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL)

		if (!(_base_send_ioc_reset(ioc,

		if (!(_base_send_ioc_reset(ioc,

		    MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET, 15, CAN_SLEEP)))

		    MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET, 15, CAN_SLEEP))) {

			ioc->ioc_reset_count++;

			return 0;

			return 0;

	}





 issue_diag_reset:

 issue_diag_reset:

	return _base_diag_reset(ioc, CAN_SLEEP);

	rc = _base_diag_reset(ioc, CAN_SLEEP);

	ioc->ioc_reset_count++;

	return rc;

}

}





/**

/**

drivers/scsi/mpt2sas/mpt2sas_base.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -615,6 +615,7 @@ struct MPT2SAS_ADAPTER { 
	u16		msix_vector_count;

	u16		msix_vector_count;

	u32		*msix_table;

	u32		*msix_table;

	u32		*msix_table_backup;

	u32		*msix_table_backup;

	u32		ioc_reset_count;





	/* internal commands, callback index */

	/* internal commands, callback index */

	u8		scsi_io_cb_idx;

	u8		scsi_io_cb_idx;

drivers/scsi/mpt2sas/mpt2sas_ctl.c

+24 −0
Original line number Original line Diff line number Diff line
@@ -2581,6 +2581,29 @@ _ctl_fwfault_debug_store(struct device *cdev, 
static DEVICE_ATTR(fwfault_debug, S_IRUGO | S_IWUSR,

static DEVICE_ATTR(fwfault_debug, S_IRUGO | S_IWUSR,

    _ctl_fwfault_debug_show, _ctl_fwfault_debug_store);

    _ctl_fwfault_debug_show, _ctl_fwfault_debug_store);







/**

 * _ctl_ioc_reset_count_show - ioc reset count

 * @cdev - pointer to embedded class device

 * @buf - the buffer returned

 *

 * This is firmware queue depth limit

 *

 * A sysfs 'read-only' shost attribute.

 */

static ssize_t

_ctl_ioc_reset_count_show(struct device *cdev, struct device_attribute *attr,

    char *buf)

{

	struct Scsi_Host *shost = class_to_shost(cdev);

	struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);



	return snprintf(buf, PAGE_SIZE, "%08d\n", ioc->ioc_reset_count);

}

static DEVICE_ATTR(ioc_reset_count, S_IRUGO,

    _ctl_ioc_reset_count_show, NULL);





struct device_attribute *mpt2sas_host_attrs[] = {

struct device_attribute *mpt2sas_host_attrs[] = {

	&dev_attr_version_fw,

	&dev_attr_version_fw,

	&dev_attr_version_bios,

	&dev_attr_version_bios,
@@ -2597,6 +2620,7 @@ struct device_attribute *mpt2sas_host_attrs[] = { 
	&dev_attr_fwfault_debug,

	&dev_attr_fwfault_debug,

	&dev_attr_fw_queue_depth,

	&dev_attr_fw_queue_depth,

	&dev_attr_host_sas_address,

	&dev_attr_host_sas_address,

	&dev_attr_ioc_reset_count,

	NULL,

	NULL,

};

};