It's difficult to determine which domain_device is triggering error recovery,
so convert messages like:
sas: ex 5001b4da000e703f phy08:T attached: 5001b4da000e7028
sas: ex 5001b4da000e703f phy09:T attached: 5001b4da000e7029
...
ata7: sas eh calling libata port error handler
ata8: sas eh calling libata port error handler
...into:
sas: ex 5001517e85cfefff phy05:T:9 attached: 5001517e85cfefe5 (stp)
sas: ex 5001517e3b0af0bf phy11:T:8 attached: 5001517e3b0af0ab (stp)
...
sas: ata7: end_device-21:1: dev error handler
sas: ata8: end_device-20:0:5: dev error handler
which shows attached link rate, device type, and associates a
domain_device with its ata_port id to correlate messages emitted from
libata-eh.
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
---
drivers/scsi/libsas/sas_ata.c | 43 ++++++++++++++++++++++++++++--------
drivers/scsi/libsas/sas_expander.c | 38 ++++++++++++++++++++++++++------
2 files changed, 64 insertions(+), 17 deletions(-)
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 0ee6831..b43e395 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -317,6 +317,28 @@ static int local_ata_check_ready(struct ata_link *link)
}
}
+static int sas_ata_printk(const char *level, const struct domain_device *ddev,
+ const char *fmt, ...)
+{
+ struct ata_port *ap = ddev->sata_dev.ap;
+ struct device *dev = &ddev->rphy->dev;
+ struct va_format vaf;
+ va_list args;
+ int r;
+
+ va_start(args, fmt);
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ r = printk("%ssas: ata%u: %s: %pV",
+ level, ap->print_id, dev_name(dev), &vaf);
+
+ va_end(args);
+
+ return r;
+}
+
static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class,
unsigned long deadline)
{
@@ -333,7 +355,7 @@ static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class,
res = i->dft->lldd_I_T_nexus_reset(dev);
if (res != TMF_RESP_FUNC_COMPLETE)
- SAS_DPRINTK("%s: Unable to reset ata device?\n", __func__);
+ sas_ata_printk(KERN_DEBUG, dev, "Unable to reset ata device?\n");
phy = sas_get_local_phy(dev);
if (scsi_is_sas_phy_local(phy))
@@ -344,7 +366,7 @@ static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class,
ret = ata_wait_after_reset(link, deadline, check_ready);
if (ret && ret != -EAGAIN)
- ata_link_err(link, "COMRESET failed (errno=%d)\n", ret);
+ sas_ata_printk(KERN_ERR, dev, "reset failed (errno=%d)\n", ret);
/* XXX: if the class changes during the reset the upper layer
* should be informed, if the device has gone away we assume
@@ -665,7 +687,7 @@ static void async_sas_ata_eh(void *data, async_cookie_t cookie)
* remove once all commands are completed
*/
kref_get(&dev->kref);
- ata_port_printk(ap, KERN_DEBUG, "sas eh calling libata port error handler");
+ sas_ata_printk(KERN_DEBUG, dev, "dev error handler\n");
ata_scsi_port_error_handler(ha->core.shost, ap);
sas_put_device(dev);
@@ -708,26 +730,27 @@ void sas_ata_eh(struct Scsi_Host *shost, struct list_head *work_q,
struct list_head *done_q)
{
struct scsi_cmnd *cmd, *n;
- struct ata_port *ap;
+ struct domain_device *eh_dev;
do {
LIST_HEAD(sata_q);
-
- ap = NULL;
+ eh_dev = NULL;
list_for_each_entry_safe(cmd, n, work_q, eh_entry) {
struct domain_device *ddev = cmd_to_domain_dev(cmd);
if (!dev_is_sata(ddev) || TO_SAS_TASK(cmd))
continue;
- if (ap && ap != ddev->sata_dev.ap)
+ if (eh_dev && eh_dev != ddev)
continue;
- ap = ddev->sata_dev.ap;
+ eh_dev = ddev;
list_move(&cmd->eh_entry, &sata_q);
}
if (!list_empty(&sata_q)) {
- ata_port_printk(ap, KERN_DEBUG, "sas eh calling libata cmd error handler\n");
+ struct ata_port *ap = eh_dev->sata_dev.ap;
+
+ sas_ata_printk(KERN_DEBUG, eh_dev, "cmd error handler\n");
ata_scsi_cmd_error_handler(shost, ap, &sata_q);
/*
* ata's error handler may leave the cmd on the list
@@ -743,7 +766,7 @@ void sas_ata_eh(struct Scsi_Host *shost, struct list_head *work_q,
while (!list_empty(&sata_q))
list_del_init(sata_q.next);
}
- } while (ap);
+ } while (eh_dev);
}
void sas_ata_schedule_reset(struct domain_device *dev)
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 68a80a0..f8d941f 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -176,9 +176,10 @@ static void sas_set_ex_phy(struct domain_device *dev, int phy_id,
struct smp_resp *resp = disc_resp;
struct discover_resp *dr = &resp->disc;
struct sas_rphy *rphy = dev->rphy;
- int rediscover = (phy->phy != NULL);
+ bool new_phy = !phy->phy;
+ char *type;
- if (!rediscover) {
+ if (new_phy) {
phy->phy = sas_phy_alloc(&rphy->dev, phy_id);
/* FIXME: error_handling */
@@ -223,20 +224,43 @@ static void sas_set_ex_phy(struct domain_device *dev, int phy_id,
phy->phy->maximum_linkrate = dr->pmax_linkrate;
phy->phy->negotiated_linkrate = phy->linkrate;
- if (!rediscover)
+ if (new_phy)
if (sas_phy_add(phy->phy)) {
sas_phy_free(phy->phy);
return;
}
- SAS_DPRINTK("ex %016llx phy%02d:%c attached: %016llx\n",
+ switch (phy->attached_dev_type) {
+ case NO_DEVICE:
+ type = "no device";
+ break;
+ case SAS_END_DEV:
+ if (phy->attached_iproto) {
+ if (phy->attached_tproto)
+ type = "host+target";
+ else
+ type = "host";
+ } else {
+ if (dr->attached_sata_dev)
+ type = "stp";
+ else
+ type = "ssp";
+ }
+ break;
+ case EDGE_DEV:
+ case FANOUT_DEV:
+ type = "smp";
+ break;
+ default:
+ type = "unknown";
+ }
+
+ SAS_DPRINTK("ex %016llx phy%02d:%c:%X attached: %016llx (%s)\n",
SAS_ADDR(dev->sas_addr), phy->phy_id,
phy->routing_attr == TABLE_ROUTING ? 'T' :
phy->routing_attr == DIRECT_ROUTING ? 'D' :
phy->routing_attr == SUBTRACTIVE_ROUTING ? 'S' : '?',
- SAS_ADDR(phy->attached_sas_addr));
-
- return;
+ phy->linkrate, SAS_ADDR(phy->attached_sas_addr), type);
}
/* check if we have an existing attached ata device on this expander phy */
--
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