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[SCSI] scsi_transport_sas: support link error attributes

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For now supporting the ->get_linkerrors method is mandatory.  I'll
probably be beaten to implement the .show_foo variables and different
types of attributes soon..

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Christoph Hellwig
2005-09-19 21:59:42 +02:00
committed by James Bottomley
parent d25cf1ced9
commit c3ee74c4e9
2 changed files with 49 additions and 5 deletions
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drivers/scsi/scsi_transport_sas.c
+30 -1
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@@ -34,7 +34,7 @@
#define SAS_HOST_ATTRS 0
#define SAS_PORT_ATTRS 11
#define SAS_PORT_ATTRS 15
#define SAS_RPORT_ATTRS 5
struct sas_internal {
@@ -257,6 +257,26 @@ 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; \
\
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)
{
@@ -282,6 +302,10 @@ 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,
@@ -749,6 +773,11 @@ 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);
i->phy_attrs[count] = NULL;
count = 0;