mirrors/scst
1
0
Fork 0
mirror of https://github.com/SCST-project/scst.git synced 2026-05-20 20:21:30 +00:00
Code Issues Packages Projects Releases Wiki Activity

qla2x00t-32gbit: Add host attribute to trigger MPI hang

Browse Source 
Add a mechanism to trigger MPI pause for debugging purposes.

Link: https://lore.kernel.org/r/20210810043720.1137-2-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
[ commit 4c15442d9c06ae6ce0a03fd69c4869f343d67473 upstream ]

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9541 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Bart Van Assche
2021-09-05 15:43:47 +00:00
parent 51e2940169
commit 1d7a12e843
1 changed files with 25 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
qla2x00t-32gbit/qla_attr.c
View File

@@ -1887,6 +1887,30 @@ qla2x00_port_speed_show(struct device *dev, struct device_attribute *attr,
return scnprintf(buf, PAGE_SIZE, "%s\n", spd[ha->link_data_rate]);
}
static ssize_t
qla2x00_mpi_pause_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 rval = 0;
if (sscanf(buf, "%d", &rval) != 1)
return -EINVAL;
ql_log(ql_log_warn, vha, 0x7089, "Pausing MPI...\n");
rval = qla83xx_wr_reg(vha, 0x002012d4, 0x30000001);
if (rval != QLA_SUCCESS) {
ql_log(ql_log_warn, vha, 0x708a, "Unable to pause MPI.\n");
count = 0;
}
return count;
}
static DEVICE_ATTR(mpi_pause, S_IWUSR, NULL, qla2x00_mpi_pause_store);
/* ----- */
static ssize_t
@@ -2482,6 +2506,7 @@ struct device_attribute *qla2x00_host_attrs[] = {
&dev_attr_fw_attr,
&dev_attr_dport_diagnostics,
&dev_attr_edif_doorbell,
&dev_attr_mpi_pause,
NULL, /* reserve for qlini_mode */
NULL, /* reserve for ql2xiniexchg */
NULL, /* reserve for ql2xexchoffld */