1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/*
* 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 ssize_t store_recover(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(recover, S_IWUSR, NULL, store_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,
};
|
