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Diffstat (limited to 'drivers/s390/cio/css.c')
-rw-r--r--drivers/s390/cio/css.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index e2aa944eb566..d3e504c3c362 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -296,6 +296,51 @@ static const struct attribute_group *default_subch_attr_groups[] = {
NULL,
};
+static ssize_t chpids_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct subchannel *sch = to_subchannel(dev);
+ struct chsc_ssd_info *ssd = &sch->ssd_info;
+ ssize_t ret = 0;
+ int mask;
+ int chp;
+
+ for (chp = 0; chp < 8; chp++) {
+ mask = 0x80 >> chp;
+ if (ssd->path_mask & mask)
+ ret += sprintf(buf + ret, "%02x ", ssd->chpid[chp].id);
+ else
+ ret += sprintf(buf + ret, "00 ");
+ }
+ ret += sprintf(buf + ret, "\n");
+ return ret;
+}
+static DEVICE_ATTR(chpids, 0444, chpids_show, NULL);
+
+static ssize_t pimpampom_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct subchannel *sch = to_subchannel(dev);
+ struct pmcw *pmcw = &sch->schib.pmcw;
+
+ return sprintf(buf, "%02x %02x %02x\n",
+ pmcw->pim, pmcw->pam, pmcw->pom);
+}
+static DEVICE_ATTR(pimpampom, 0444, pimpampom_show, NULL);
+
+static struct attribute *io_subchannel_type_attrs[] = {
+ &dev_attr_chpids.attr,
+ &dev_attr_pimpampom.attr,
+ NULL,
+};
+ATTRIBUTE_GROUPS(io_subchannel_type);
+
+static const struct device_type io_subchannel_type = {
+ .groups = io_subchannel_type_groups,
+};
+
int css_register_subchannel(struct subchannel *sch)
{
int ret;
@@ -304,6 +349,10 @@ int css_register_subchannel(struct subchannel *sch)
sch->dev.parent = &channel_subsystems[0]->device;
sch->dev.bus = &css_bus_type;
sch->dev.groups = default_subch_attr_groups;
+
+ if (sch->st == SUBCHANNEL_TYPE_IO)
+ sch->dev.type = &io_subchannel_type;
+
/*
* We don't want to generate uevents for I/O subchannels that don't
* have a working ccw device behind them since they will be