提交 8e4708b3 编写于 作者: S Sebastian Ott 提交者: Vasily Gorbik

s390/pci: add mio_enabled attribute

Provide an attribute to query the usage of mio instructions.
Signed-off-by: NSebastian Ott <sebott@linux.ibm.com>
Signed-off-by: NVasily Gorbik <gor@linux.ibm.com>
上级 9964f396
......@@ -37,6 +37,15 @@ zpci_attr(segment1, "0x%02x\n", pfip[1]);
zpci_attr(segment2, "0x%02x\n", pfip[2]);
zpci_attr(segment3, "0x%02x\n", pfip[3]);
static ssize_t mio_enabled_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct zpci_dev *zdev = to_zpci(to_pci_dev(dev));
return sprintf(buf, zpci_use_mio(zdev) ? "1\n" : "0\n");
}
static DEVICE_ATTR_RO(mio_enabled);
static ssize_t recover_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
......@@ -115,6 +124,7 @@ static struct attribute *zpci_dev_attrs[] = {
&dev_attr_vfn.attr,
&dev_attr_uid.attr,
&dev_attr_recover.attr,
&dev_attr_mio_enabled.attr,
NULL,
};
static struct attribute_group zpci_attr_group = {
......
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