diff options
Diffstat (limited to 'drivers/scsi/scsi_transport_sas.c')
| -rw-r--r-- | drivers/scsi/scsi_transport_sas.c | 86 |
1 files changed, 79 insertions, 7 deletions
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c index ff724bbe661..edabbd05d25 100644 --- a/drivers/scsi/scsi_transport_sas.c +++ b/drivers/scsi/scsi_transport_sas.c @@ -26,6 +26,8 @@ #include <linux/init.h> #include <linux/module.h> #include <linux/err.h> +#include <linux/slab.h> +#include <linux/string.h> #include <scsi/scsi_device.h> #include <scsi/scsi_host.h> @@ -34,7 +36,7 @@ #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 +259,29 @@ 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 +291,39 @@ 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 +337,10 @@ 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, @@ -628,17 +687,16 @@ sas_rphy_delete(struct sas_rphy *rphy) struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); - transport_destroy_device(&rphy->dev); + scsi_remove_target(dev); - scsi_remove_target(&rphy->dev); + transport_remove_device(dev); + device_del(dev); + transport_destroy_device(dev); spin_lock(&sas_host->lock); list_del(&rphy->list); spin_unlock(&sas_host->lock); - transport_remove_device(dev); - device_del(dev); - transport_destroy_device(dev); put_device(&parent->dev); } EXPORT_SYMBOL(sas_rphy_delete); @@ -699,6 +757,13 @@ 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 @@ -750,6 +815,13 @@ 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; |