110 lines
2.4 KiB
C
110 lines
2.4 KiB
C
/*
|
|
* 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>
|
|
|
|
static ssize_t show_fid(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct zpci_dev *zdev = get_zdev(to_pci_dev(dev));
|
|
|
|
return sprintf(buf, "0x%08x\n", zdev->fid);
|
|
}
|
|
static DEVICE_ATTR(function_id, S_IRUGO, show_fid, NULL);
|
|
|
|
static ssize_t show_fh(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct zpci_dev *zdev = get_zdev(to_pci_dev(dev));
|
|
|
|
return sprintf(buf, "0x%08x\n", zdev->fh);
|
|
}
|
|
static DEVICE_ATTR(function_handle, S_IRUGO, show_fh, NULL);
|
|
|
|
static ssize_t show_pchid(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct zpci_dev *zdev = get_zdev(to_pci_dev(dev));
|
|
|
|
return sprintf(buf, "0x%04x\n", zdev->pchid);
|
|
}
|
|
static DEVICE_ATTR(pchid, S_IRUGO, show_pchid, NULL);
|
|
|
|
static ssize_t show_pfgid(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct zpci_dev *zdev = get_zdev(to_pci_dev(dev));
|
|
|
|
return sprintf(buf, "0x%02x\n", zdev->pfgid);
|
|
}
|
|
static DEVICE_ATTR(pfgid, S_IRUGO, show_pfgid, NULL);
|
|
|
|
static void recover_callback(struct device *dev)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(dev);
|
|
struct zpci_dev *zdev = get_zdev(pdev);
|
|
int ret;
|
|
|
|
pci_stop_and_remove_bus_device(pdev);
|
|
ret = zpci_disable_device(zdev);
|
|
if (ret)
|
|
return;
|
|
|
|
ret = zpci_enable_device(zdev);
|
|
if (ret)
|
|
return;
|
|
|
|
pci_rescan_bus(zdev->bus);
|
|
}
|
|
|
|
static ssize_t store_recover(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int rc = device_schedule_callback(dev, recover_callback);
|
|
return rc ? rc : count;
|
|
}
|
|
static DEVICE_ATTR(recover, S_IWUSR, NULL, store_recover);
|
|
|
|
static struct device_attribute *zpci_dev_attrs[] = {
|
|
&dev_attr_function_id,
|
|
&dev_attr_function_handle,
|
|
&dev_attr_pchid,
|
|
&dev_attr_pfgid,
|
|
&dev_attr_recover,
|
|
NULL,
|
|
};
|
|
|
|
int zpci_sysfs_add_device(struct device *dev)
|
|
{
|
|
int i, rc = 0;
|
|
|
|
for (i = 0; zpci_dev_attrs[i]; i++) {
|
|
rc = device_create_file(dev, zpci_dev_attrs[i]);
|
|
if (rc)
|
|
goto error;
|
|
}
|
|
return 0;
|
|
|
|
error:
|
|
while (--i >= 0)
|
|
device_remove_file(dev, zpci_dev_attrs[i]);
|
|
return rc;
|
|
}
|
|
|
|
void zpci_sysfs_remove_device(struct device *dev)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; zpci_dev_attrs[i]; i++)
|
|
device_remove_file(dev, zpci_dev_attrs[i]);
|
|
}
|