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Commit a1b23c5a authored by Chad Dupuis's avatar Chad Dupuis Committed by James Bottomley
Browse files

[SCSI] qla2xxx: Read capture firmware dump on mailbox timeout for ISP8044 and ISP82XX. 



Allow for the capture of a firmware dump but have a sysfs node
(allow_cna_fw_dump) to allow the feature to be enabled/disabled dynamically.

The default is off.

Signed-off-by: default avatarChad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: default avatarSaurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent fbe9c54b

drivers/scsi/qla2xxx/qla_attr.c

+35 −0
Original line number Diff line number Diff line
@@ -1503,6 +1503,37 @@ qla2x00_fw_dump_size_show(struct device *dev, struct device_attribute *attr, 
	return scnprintf(buf, PAGE_SIZE, "%d\n", size);

}



static ssize_t

qla2x00_allow_cna_fw_dump_show(struct device *dev,

	struct device_attribute *attr, char *buf)

{

	scsi_qla_host_t *vha = shost_priv(class_to_shost(dev));



	if (!IS_P3P_TYPE(vha->hw))

		return scnprintf(buf, PAGE_SIZE, "\n");

	else

		return scnprintf(buf, PAGE_SIZE, "%s\n",

		    vha->hw->allow_cna_fw_dump ? "true" : "false");

}



static ssize_t

qla2x00_allow_cna_fw_dump_store(struct device *dev,

	struct device_attribute *attr, const char *buf, size_t count)

{

	scsi_qla_host_t *vha = shost_priv(class_to_shost(dev));

	int val = 0;



	if (!IS_P3P_TYPE(vha->hw))

		return -EINVAL;



	if (sscanf(buf, "%d", &val) != 1)

		return -EINVAL;



	vha->hw->allow_cna_fw_dump = val != 0;



	return strlen(buf);

}



static DEVICE_ATTR(driver_version, S_IRUGO, qla2x00_drvr_version_show, NULL);

static DEVICE_ATTR(fw_version, S_IRUGO, qla2x00_fw_version_show, NULL);

static DEVICE_ATTR(serial_num, S_IRUGO, qla2x00_serial_num_show, NULL);
@@ -1544,6 +1575,9 @@ static DEVICE_ATTR(thermal_temp, S_IRUGO, qla2x00_thermal_temp_show, NULL); 
static DEVICE_ATTR(diag_requests, S_IRUGO, qla2x00_diag_requests_show, NULL);

static DEVICE_ATTR(diag_megabytes, S_IRUGO, qla2x00_diag_megabytes_show, NULL);

static DEVICE_ATTR(fw_dump_size, S_IRUGO, qla2x00_fw_dump_size_show, NULL);

static DEVICE_ATTR(allow_cna_fw_dump, S_IRUGO | S_IWUSR,

		   qla2x00_allow_cna_fw_dump_show,

		   qla2x00_allow_cna_fw_dump_store);



struct device_attribute *qla2x00_host_attrs[] = {

	&dev_attr_driver_version,
@@ -1576,6 +1610,7 @@ struct device_attribute *qla2x00_host_attrs[] = { 
	&dev_attr_diag_requests,

	&dev_attr_diag_megabytes,

	&dev_attr_fw_dump_size,

	&dev_attr_allow_cna_fw_dump,

	NULL,

};

drivers/scsi/qla2xxx/qla_def.h

+1 −0
Original line number Diff line number Diff line
@@ -3301,6 +3301,7 @@ struct qla_hw_data { 
	struct mr_data_fx00 mr;



	struct qlt_hw_data tgt;

	int	allow_cna_fw_dump;

};



/*

drivers/scsi/qla2xxx/qla_gbl.h

+2 −0
Original line number Diff line number Diff line
@@ -511,6 +511,8 @@ extern void qla2300_fw_dump(scsi_qla_host_t *, int); 
extern void qla24xx_fw_dump(scsi_qla_host_t *, int);

extern void qla25xx_fw_dump(scsi_qla_host_t *, int);

extern void qla81xx_fw_dump(scsi_qla_host_t *, int);

extern void qla82xx_fw_dump(scsi_qla_host_t *, int);

extern void qla8044_fw_dump(scsi_qla_host_t *, int);



extern void qla27xx_fwdump(scsi_qla_host_t *, int);

extern ulong qla27xx_fwdt_calculate_dump_size(struct scsi_qla_host *);

drivers/scsi/qla2xxx/qla_nx.c

+17 −0
Original line number Diff line number Diff line
@@ -4502,3 +4502,20 @@ exit: 
	qla82xx_idc_unlock(ha);

	return rval;

}



void

qla82xx_fw_dump(scsi_qla_host_t *vha, int hardware_locked)

{

	struct qla_hw_data *ha = vha->hw;



	if (!ha->allow_cna_fw_dump)

		return;



	scsi_block_requests(vha->host);

	ha->flags.isp82xx_no_md_cap = 1;

	qla82xx_idc_lock(ha);

	qla82xx_set_reset_owner(vha);

	qla82xx_idc_unlock(ha);

	qla2x00_wait_for_chip_reset(vha);

	scsi_unblock_requests(vha->host);

}

drivers/scsi/qla2xxx/qla_nx2.c

+16 −0
Original line number Diff line number Diff line
@@ -3713,3 +3713,19 @@ exit_isp_reset: 
	return rval;

}



void

qla8044_fw_dump(scsi_qla_host_t *vha, int hardware_locked)

{

	struct qla_hw_data *ha = vha->hw;



	if (!ha->allow_cna_fw_dump)

		return;



	scsi_block_requests(vha->host);

	ha->flags.isp82xx_no_md_cap = 1;

	qla8044_idc_lock(ha);

	qla82xx_set_reset_owner(vha);

	qla8044_idc_unlock(ha);

	qla2x00_wait_for_chip_reset(vha);

	scsi_unblock_requests(vha->host);

}