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path: root/drivers/s390/scsi/zfcp_scsi.c
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Diffstat (limited to 'drivers/s390/scsi/zfcp_scsi.c')
-rw-r--r--drivers/s390/scsi/zfcp_scsi.c141
1 files changed, 108 insertions, 33 deletions
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index 22f9562f415c..a8efcb330bc1 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -181,6 +181,7 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
if (abrt_req)
break;
+ zfcp_dbf_scsi_abort("abrt_wt", scpnt, NULL);
zfcp_erp_wait(adapter);
ret = fc_block_scsi_eh(scpnt);
if (ret) {
@@ -264,44 +265,52 @@ static void zfcp_scsi_forget_cmnds(struct zfcp_scsi_dev *zsdev, u8 tm_flags)
write_unlock_irqrestore(&adapter->abort_lock, flags);
}
-static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
+/**
+ * zfcp_scsi_task_mgmt_function() - Send a task management function (sync).
+ * @sdev: Pointer to SCSI device to send the task management command to.
+ * @tm_flags: Task management flags,
+ * here we only handle %FCP_TMF_TGT_RESET or %FCP_TMF_LUN_RESET.
+ */
+static int zfcp_scsi_task_mgmt_function(struct scsi_device *sdev, u8 tm_flags)
{
- struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
+ struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
+ struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
struct zfcp_fsf_req *fsf_req = NULL;
int retval = SUCCESS, ret;
int retry = 3;
while (retry--) {
- fsf_req = zfcp_fsf_fcp_task_mgmt(scpnt, tm_flags);
+ fsf_req = zfcp_fsf_fcp_task_mgmt(sdev, tm_flags);
if (fsf_req)
break;
+ zfcp_dbf_scsi_devreset("wait", sdev, tm_flags, NULL);
zfcp_erp_wait(adapter);
- ret = fc_block_scsi_eh(scpnt);
+ ret = fc_block_rport(rport);
if (ret) {
- zfcp_dbf_scsi_devreset("fiof", scpnt, tm_flags, NULL);
+ zfcp_dbf_scsi_devreset("fiof", sdev, tm_flags, NULL);
return ret;
}
if (!(atomic_read(&adapter->status) &
ZFCP_STATUS_COMMON_RUNNING)) {
- zfcp_dbf_scsi_devreset("nres", scpnt, tm_flags, NULL);
+ zfcp_dbf_scsi_devreset("nres", sdev, tm_flags, NULL);
return SUCCESS;
}
}
if (!fsf_req) {
- zfcp_dbf_scsi_devreset("reqf", scpnt, tm_flags, NULL);
+ zfcp_dbf_scsi_devreset("reqf", sdev, tm_flags, NULL);
return FAILED;
}
wait_for_completion(&fsf_req->completion);
if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
- zfcp_dbf_scsi_devreset("fail", scpnt, tm_flags, fsf_req);
+ zfcp_dbf_scsi_devreset("fail", sdev, tm_flags, fsf_req);
retval = FAILED;
} else {
- zfcp_dbf_scsi_devreset("okay", scpnt, tm_flags, fsf_req);
+ zfcp_dbf_scsi_devreset("okay", sdev, tm_flags, fsf_req);
zfcp_scsi_forget_cmnds(zfcp_sdev, tm_flags);
}
@@ -311,27 +320,81 @@ static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt)
{
- return zfcp_task_mgmt_function(scpnt, FCP_TMF_LUN_RESET);
+ struct scsi_device *sdev = scpnt->device;
+
+ return zfcp_scsi_task_mgmt_function(sdev, FCP_TMF_LUN_RESET);
}
static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
{
- return zfcp_task_mgmt_function(scpnt, FCP_TMF_TGT_RESET);
+ struct scsi_target *starget = scsi_target(scpnt->device);
+ struct fc_rport *rport = starget_to_rport(starget);
+ struct Scsi_Host *shost = rport_to_shost(rport);
+ struct scsi_device *sdev = NULL, *tmp_sdev;
+ struct zfcp_adapter *adapter =
+ (struct zfcp_adapter *)shost->hostdata[0];
+ int ret;
+
+ shost_for_each_device(tmp_sdev, shost) {
+ if (tmp_sdev->id == starget->id) {
+ sdev = tmp_sdev;
+ break;
+ }
+ }
+ if (!sdev) {
+ ret = FAILED;
+ zfcp_dbf_scsi_eh("tr_nosd", adapter, starget->id, ret);
+ return ret;
+ }
+
+ ret = zfcp_scsi_task_mgmt_function(sdev, FCP_TMF_TGT_RESET);
+
+ /* release reference from above shost_for_each_device */
+ if (sdev)
+ scsi_device_put(tmp_sdev);
+
+ return ret;
}
static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
- int ret;
+ int ret = SUCCESS, fc_ret;
zfcp_erp_adapter_reopen(adapter, 0, "schrh_1");
zfcp_erp_wait(adapter);
- ret = fc_block_scsi_eh(scpnt);
- if (ret)
+ fc_ret = fc_block_scsi_eh(scpnt);
+ if (fc_ret)
+ ret = fc_ret;
+
+ zfcp_dbf_scsi_eh("schrh_r", adapter, ~0, ret);
+ return ret;
+}
+
+/**
+ * zfcp_scsi_sysfs_host_reset() - Support scsi_host sysfs attribute host_reset.
+ * @shost: Pointer to Scsi_Host to perform action on.
+ * @reset_type: We support %SCSI_ADAPTER_RESET but not %SCSI_FIRMWARE_RESET.
+ *
+ * Return: 0 on %SCSI_ADAPTER_RESET, -%EOPNOTSUPP otherwise.
+ *
+ * This is similar to zfcp_sysfs_adapter_failed_store().
+ */
+static int zfcp_scsi_sysfs_host_reset(struct Scsi_Host *shost, int reset_type)
+{
+ struct zfcp_adapter *adapter =
+ (struct zfcp_adapter *)shost->hostdata[0];
+ int ret = 0;
+
+ if (reset_type != SCSI_ADAPTER_RESET) {
+ ret = -EOPNOTSUPP;
+ zfcp_dbf_scsi_eh("scshr_n", adapter, ~0, ret);
return ret;
+ }
- return SUCCESS;
+ zfcp_erp_adapter_reset_sync(adapter, "scshr_y");
+ return ret;
}
struct scsi_transport_template *zfcp_scsi_transport_template;
@@ -349,6 +412,7 @@ static struct scsi_host_template zfcp_scsi_host_template = {
.slave_configure = zfcp_scsi_slave_configure,
.slave_destroy = zfcp_scsi_slave_destroy,
.change_queue_depth = scsi_change_queue_depth,
+ .host_reset = zfcp_scsi_sysfs_host_reset,
.proc_name = "zfcp",
.can_queue = 4096,
.this_id = -1,
@@ -363,6 +427,7 @@ static struct scsi_host_template zfcp_scsi_host_template = {
.shost_attrs = zfcp_sysfs_shost_attrs,
.sdev_attrs = zfcp_sysfs_sdev_attrs,
.track_queue_depth = 1,
+ .supported_mode = MODE_INITIATOR,
};
/**
@@ -430,7 +495,7 @@ void zfcp_scsi_adapter_unregister(struct zfcp_adapter *adapter)
}
static struct fc_host_statistics*
-zfcp_init_fc_host_stats(struct zfcp_adapter *adapter)
+zfcp_scsi_init_fc_host_stats(struct zfcp_adapter *adapter)
{
struct fc_host_statistics *fc_stats;
@@ -444,9 +509,9 @@ zfcp_init_fc_host_stats(struct zfcp_adapter *adapter)
return adapter->fc_stats;
}
-static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
- struct fsf_qtcb_bottom_port *data,
- struct fsf_qtcb_bottom_port *old)
+static void zfcp_scsi_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
+ struct fsf_qtcb_bottom_port *data,
+ struct fsf_qtcb_bottom_port *old)
{
fc_stats->seconds_since_last_reset =
data->seconds_since_last_reset - old->seconds_since_last_reset;
@@ -477,8 +542,8 @@ static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
}
-static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats,
- struct fsf_qtcb_bottom_port *data)
+static void zfcp_scsi_set_fc_host_stats(struct fc_host_statistics *fc_stats,
+ struct fsf_qtcb_bottom_port *data)
{
fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
fc_stats->tx_frames = data->tx_frames;
@@ -502,7 +567,8 @@ static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats,
fc_stats->fcp_output_megabytes = data->output_mb;
}
-static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host)
+static struct fc_host_statistics *
+zfcp_scsi_get_fc_host_stats(struct Scsi_Host *host)
{
struct zfcp_adapter *adapter;
struct fc_host_statistics *fc_stats;
@@ -510,7 +576,7 @@ static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host)
int ret;
adapter = (struct zfcp_adapter *)host->hostdata[0];
- fc_stats = zfcp_init_fc_host_stats(adapter);
+ fc_stats = zfcp_scsi_init_fc_host_stats(adapter);
if (!fc_stats)
return NULL;
@@ -527,16 +593,16 @@ static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host)
if (adapter->stats_reset &&
((jiffies/HZ - adapter->stats_reset) <
data->seconds_since_last_reset))
- zfcp_adjust_fc_host_stats(fc_stats, data,
- adapter->stats_reset_data);
+ zfcp_scsi_adjust_fc_host_stats(fc_stats, data,
+ adapter->stats_reset_data);
else
- zfcp_set_fc_host_stats(fc_stats, data);
+ zfcp_scsi_set_fc_host_stats(fc_stats, data);
kfree(data);
return fc_stats;
}
-static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost)
+static void zfcp_scsi_reset_fc_host_stats(struct Scsi_Host *shost)
{
struct zfcp_adapter *adapter;
struct fsf_qtcb_bottom_port *data;
@@ -558,7 +624,7 @@ static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost)
}
}
-static void zfcp_get_host_port_state(struct Scsi_Host *shost)
+static void zfcp_scsi_get_host_port_state(struct Scsi_Host *shost)
{
struct zfcp_adapter *adapter =
(struct zfcp_adapter *)shost->hostdata[0];
@@ -575,7 +641,8 @@ static void zfcp_get_host_port_state(struct Scsi_Host *shost)
fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
}
-static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
+static void zfcp_scsi_set_rport_dev_loss_tmo(struct fc_rport *rport,
+ u32 timeout)
{
rport->dev_loss_tmo = timeout;
}
@@ -602,6 +669,11 @@ static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
if (port) {
zfcp_erp_port_forced_reopen(port, 0, "sctrpi1");
put_device(&port->dev);
+ } else {
+ zfcp_erp_port_forced_no_port_dbf(
+ "sctrpin", adapter,
+ rport->port_name /* zfcp_scsi_rport_register */,
+ rport->port_id /* zfcp_scsi_rport_register */);
}
}
@@ -687,6 +759,9 @@ void zfcp_scsi_rport_work(struct work_struct *work)
struct zfcp_port *port = container_of(work, struct zfcp_port,
rport_work);
+ set_worker_desc("zrp%c-%16llx",
+ (port->rport_task == RPORT_ADD) ? 'a' : 'd',
+ port->wwpn); /* < WORKER_DESC_LEN=24 */
while (port->rport_task) {
if (port->rport_task == RPORT_ADD) {
port->rport_task = RPORT_NONE;
@@ -761,10 +836,10 @@ struct fc_function_template zfcp_transport_functions = {
.show_host_supported_speeds = 1,
.show_host_maxframe_size = 1,
.show_host_serial_number = 1,
- .get_fc_host_stats = zfcp_get_fc_host_stats,
- .reset_fc_host_stats = zfcp_reset_fc_host_stats,
- .set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo,
- .get_host_port_state = zfcp_get_host_port_state,
+ .get_fc_host_stats = zfcp_scsi_get_fc_host_stats,
+ .reset_fc_host_stats = zfcp_scsi_reset_fc_host_stats,
+ .set_rport_dev_loss_tmo = zfcp_scsi_set_rport_dev_loss_tmo,
+ .get_host_port_state = zfcp_scsi_get_host_port_state,
.terminate_rport_io = zfcp_scsi_terminate_rport_io,
.show_host_port_state = 1,
.show_host_active_fc4s = 1,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.