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/*
* Copyright IBM Corp. 2012
*
* Author(s):
* Jan Glauber <jang@linux.vnet.ibm.com>
*/
#define COMPONENT "zPCI"
#define pr_fmt(fmt) COMPONENT ": " fmt
#include <linux/kernel.h>
#include <linux/stat.h>
#include <linux/pci.h>
#define zpci_attr(name, fmt, member) \
static ssize_t name##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
struct zpci_dev *zdev = get_zdev(to_pci_dev(dev)); \
\
return sprintf(buf, fmt, zdev->member); \
} \
static DEVICE_ATTR_RO(name)
zpci_attr(function_id, "0x%08x\n", fid);
zpci_attr(function_handle, "0x%08x\n", fh);
zpci_attr(pchid, "0x%04x\n", pchid);
zpci_attr(pfgid, "0x%02x\n", pfgid);
static ssize_t recover_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct zpci_dev *zdev = get_zdev(pdev);
int ret;
if (!device_remove_file_self(dev, attr))
return count;
pci_stop_and_remove_bus_device(pdev);
ret = zpci_disable_device(zdev);
if (ret)
return ret;
ret = zpci_enable_device(zdev);
if (ret)
return ret;
pci_rescan_bus(zdev->bus);
return count;
}
static DEVICE_ATTR_WO(recover);
static struct attribute *zpci_dev_attrs[] = {
&dev_attr_function_id.attr,
&dev_attr_function_handle.attr,
&dev_attr_pchid.attr,
&dev_attr_pfgid.attr,
&dev_attr_recover.attr,
NULL,
};
static struct attribute_group zpci_attr_group = {
.attrs = zpci_dev_attrs,
};
const struct attribute_group *zpci_attr_groups[] = {
&zpci_attr_group,
NULL,
};
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