5113f6f70
 김현기
kernel add
|
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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
/*
* Copyright IBM Corp. 2012
*
* Author(s):
* Jan Glauber <jang@linux.vnet.ibm.com>
*/
#define KMSG_COMPONENT "zpci"
#define pr_fmt(fmt) KMSG_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 = to_zpci(to_pci_dev(dev)); \
\
return sprintf(buf, fmt, zdev->member); \
} \
static DEVICE_ATTR_RO(name)
zpci_attr(function_id, "0x%08x
", fid);
zpci_attr(function_handle, "0x%08x
", fh);
zpci_attr(pchid, "0x%04x
", pchid);
zpci_attr(pfgid, "0x%02x
", pfgid);
zpci_attr(vfn, "0x%04x
", vfn);
zpci_attr(pft, "0x%02x
", pft);
zpci_attr(uid, "0x%x
", uid);
zpci_attr(segment0, "0x%02x
", pfip[0]);
zpci_attr(segment1, "0x%02x
", pfip[1]);
zpci_attr(segment2, "0x%02x
", pfip[2]);
zpci_attr(segment3, "0x%02x
", pfip[3]);
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 = to_zpci(pdev);
int ret;
if (!device_remove_file_self(dev, attr))
return count;
pci_lock_rescan_remove();
pci_stop_and_remove_bus_device(pdev);
ret = zpci_disable_device(zdev);
if (ret)
goto error;
ret = zpci_enable_device(zdev);
if (ret)
goto error;
pci_rescan_bus(zdev->bus);
pci_unlock_rescan_remove();
return count;
error:
pci_unlock_rescan_remove();
return ret;
}
static DEVICE_ATTR_WO(recover);
static ssize_t util_string_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t off, size_t count)
{
struct device *dev = kobj_to_dev(kobj);
struct pci_dev *pdev = to_pci_dev(dev);
struct zpci_dev *zdev = to_zpci(pdev);
return memory_read_from_buffer(buf, count, &off, zdev->util_str,
sizeof(zdev->util_str));
}
static BIN_ATTR_RO(util_string, CLP_UTIL_STR_LEN);
static struct bin_attribute *zpci_bin_attrs[] = {
&bin_attr_util_string,
NULL,
};
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_pft.attr,
&dev_attr_vfn.attr,
&dev_attr_uid.attr,
&dev_attr_recover.attr,
NULL,
};
static struct attribute_group zpci_attr_group = {
.attrs = zpci_dev_attrs,
.bin_attrs = zpci_bin_attrs,
};
static struct attribute *pfip_attrs[] = {
&dev_attr_segment0.attr,
&dev_attr_segment1.attr,
&dev_attr_segment2.attr,
&dev_attr_segment3.attr,
NULL,
};
static struct attribute_group pfip_attr_group = {
.name = "pfip",
.attrs = pfip_attrs,
};
const struct attribute_group *zpci_attr_groups[] = {
&zpci_attr_group,
&pfip_attr_group,
NULL,
};
|