summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/scsi_transport_sas.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/scsi/scsi_transport_sas.c')
-rw-r--r--drivers/scsi/scsi_transport_sas.c75
1 files changed, 73 insertions, 2 deletions
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index 1d145d2..0cc766a 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -34,7 +34,7 @@
#define SAS_HOST_ATTRS 0
-#define SAS_PORT_ATTRS 11
+#define SAS_PORT_ATTRS 17
#define SAS_RPORT_ATTRS 5
struct sas_internal {
@@ -257,6 +257,29 @@ show_sas_phy_##field(struct class_device *cdev, char *buf) \
sas_phy_show_linkspeed(field) \
static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
+#define sas_phy_show_linkerror(field) \
+static ssize_t \
+show_sas_phy_##field(struct class_device *cdev, char *buf) \
+{ \
+ struct sas_phy *phy = transport_class_to_phy(cdev); \
+ struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
+ struct sas_internal *i = to_sas_internal(shost->transportt); \
+ int error; \
+ \
+ if (!phy->local_attached) \
+ return -EINVAL; \
+ \
+ error = i->f->get_linkerrors(phy); \
+ if (error) \
+ return error; \
+ return snprintf(buf, 20, "%u\n", phy->field); \
+}
+
+#define sas_phy_linkerror_attr(field) \
+ sas_phy_show_linkerror(field) \
+static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
+
+
static ssize_t
show_sas_device_type(struct class_device *cdev, char *buf)
{
@@ -266,9 +289,39 @@ show_sas_device_type(struct class_device *cdev, char *buf)
return snprintf(buf, 20, "none\n");
return get_sas_device_type_names(phy->identify.device_type, buf);
}
-
static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL);
+static ssize_t do_sas_phy_reset(struct class_device *cdev,
+ size_t count, int hard_reset)
+{
+ struct sas_phy *phy = transport_class_to_phy(cdev);
+ struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
+ struct sas_internal *i = to_sas_internal(shost->transportt);
+ int error;
+
+ if (!phy->local_attached)
+ return -EINVAL;
+
+ error = i->f->phy_reset(phy, hard_reset);
+ if (error)
+ return error;
+ return count;
+};
+
+static ssize_t store_sas_link_reset(struct class_device *cdev,
+ const char *buf, size_t count)
+{
+ return do_sas_phy_reset(cdev, count, 0);
+}
+static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset);
+
+static ssize_t store_sas_hard_reset(struct class_device *cdev,
+ const char *buf, size_t count)
+{
+ return do_sas_phy_reset(cdev, count, 1);
+}
+static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset);
+
sas_phy_protocol_attr(identify.initiator_port_protocols,
initiator_port_protocols);
sas_phy_protocol_attr(identify.target_port_protocols,
@@ -282,6 +335,10 @@ sas_phy_linkspeed_attr(minimum_linkrate_hw);
sas_phy_linkspeed_attr(minimum_linkrate);
sas_phy_linkspeed_attr(maximum_linkrate_hw);
sas_phy_linkspeed_attr(maximum_linkrate);
+sas_phy_linkerror_attr(invalid_dword_count);
+sas_phy_linkerror_attr(running_disparity_error_count);
+sas_phy_linkerror_attr(loss_of_dword_sync_count);
+sas_phy_linkerror_attr(phy_reset_problem_count);
static DECLARE_TRANSPORT_CLASS(sas_phy_class,
@@ -698,6 +755,13 @@ static struct device *sas_target_parent(struct Scsi_Host *shost,
i->phy_attrs[count] = &i->private_phy_attrs[count]; \
count++
+#define SETUP_PORT_ATTRIBUTE_WRONLY(field) \
+ i->private_phy_attrs[count] = class_device_attr_##field; \
+ i->private_phy_attrs[count].attr.mode = S_IWUGO; \
+ i->private_phy_attrs[count].show = NULL; \
+ i->phy_attrs[count] = &i->private_phy_attrs[count]; \
+ count++
+
/**
* sas_attach_transport -- instantiate SAS transport template
@@ -749,6 +813,13 @@ sas_attach_transport(struct sas_function_template *ft)
SETUP_PORT_ATTRIBUTE(minimum_linkrate);
SETUP_PORT_ATTRIBUTE(maximum_linkrate_hw);
SETUP_PORT_ATTRIBUTE(maximum_linkrate);
+
+ SETUP_PORT_ATTRIBUTE(invalid_dword_count);
+ SETUP_PORT_ATTRIBUTE(running_disparity_error_count);
+ SETUP_PORT_ATTRIBUTE(loss_of_dword_sync_count);
+ SETUP_PORT_ATTRIBUTE(phy_reset_problem_count);
+ SETUP_PORT_ATTRIBUTE_WRONLY(link_reset);
+ SETUP_PORT_ATTRIBUTE_WRONLY(hard_reset);
i->phy_attrs[count] = NULL;
count = 0;
OpenPOWER on IntegriCloud