diff options
Diffstat (limited to 'drivers/s390/crypto/ap_card.c')
| -rw-r--r-- | drivers/s390/crypto/ap_card.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/s390/crypto/ap_card.c b/drivers/s390/crypto/ap_card.c index 6588713319ba..d98bdd28d23e 100644 --- a/drivers/s390/crypto/ap_card.c +++ b/drivers/s390/crypto/ap_card.c @@ -12,6 +12,7 @@ #include <linux/init.h> #include <linux/slab.h> #include <asm/facility.h> +#include <asm/sclp.h> #include "ap_bus.h" @@ -139,6 +140,38 @@ static ssize_t modalias_show(struct device *dev, static DEVICE_ATTR_RO(modalias); +static ssize_t config_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ap_card *ac = to_ap_card(dev); + + return scnprintf(buf, PAGE_SIZE, "%d\n", ac->config ? 1 : 0); +} + +static ssize_t config_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int rc = 0, cfg; + struct ap_card *ac = to_ap_card(dev); + + if (sscanf(buf, "%d\n", &cfg) != 1 || cfg < 0 || cfg > 1) + return -EINVAL; + + if (cfg && !ac->config) + rc = sclp_ap_configure(ac->id); + else if (!cfg && ac->config) + rc = sclp_ap_deconfigure(ac->id); + if (rc) + return rc; + + ac->config = cfg ? true : false; + + return count; +} + +static DEVICE_ATTR_RW(config); + static struct attribute *ap_card_dev_attrs[] = { &dev_attr_hwtype.attr, &dev_attr_raw_hwtype.attr, @@ -148,6 +181,7 @@ static struct attribute *ap_card_dev_attrs[] = { &dev_attr_requestq_count.attr, &dev_attr_pendingq_count.attr, &dev_attr_modalias.attr, + &dev_attr_config.attr, NULL }; |