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7
8#define KMSG_COMPONENT "zpci"
9#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
10
11#include <linux/kernel.h>
12#include <linux/stat.h>
13#include <linux/pci.h>
14
15#define zpci_attr(name, fmt, member) \
16static ssize_t name##_show(struct device *dev, \
17 struct device_attribute *attr, char *buf) \
18{ \
19 struct zpci_dev *zdev = to_zpci(to_pci_dev(dev)); \
20 \
21 return sprintf(buf, fmt, zdev->member); \
22} \
23static DEVICE_ATTR_RO(name)
24
25zpci_attr(function_id, "0x%08x\n", fid);
26zpci_attr(function_handle, "0x%08x\n", fh);
27zpci_attr(pchid, "0x%04x\n", pchid);
28zpci_attr(pfgid, "0x%02x\n", pfgid);
29zpci_attr(vfn, "0x%04x\n", vfn);
30zpci_attr(pft, "0x%02x\n", pft);
31zpci_attr(uid, "0x%x\n", uid);
32zpci_attr(segment0, "0x%02x\n", pfip[0]);
33zpci_attr(segment1, "0x%02x\n", pfip[1]);
34zpci_attr(segment2, "0x%02x\n", pfip[2]);
35zpci_attr(segment3, "0x%02x\n", pfip[3]);
36
37static ssize_t recover_store(struct device *dev, struct device_attribute *attr,
38 const char *buf, size_t count)
39{
40 struct pci_dev *pdev = to_pci_dev(dev);
41 struct zpci_dev *zdev = to_zpci(pdev);
42 int ret;
43
44 if (!device_remove_file_self(dev, attr))
45 return count;
46
47 pci_lock_rescan_remove();
48 pci_stop_and_remove_bus_device(pdev);
49 ret = zpci_disable_device(zdev);
50 if (ret)
51 goto error;
52
53 ret = zpci_enable_device(zdev);
54 if (ret)
55 goto error;
56
57 pci_rescan_bus(zdev->bus);
58 pci_unlock_rescan_remove();
59
60 return count;
61
62error:
63 pci_unlock_rescan_remove();
64 return ret;
65}
66static DEVICE_ATTR_WO(recover);
67
68static ssize_t util_string_read(struct file *filp, struct kobject *kobj,
69 struct bin_attribute *attr, char *buf,
70 loff_t off, size_t count)
71{
72 struct device *dev = kobj_to_dev(kobj);
73 struct pci_dev *pdev = to_pci_dev(dev);
74 struct zpci_dev *zdev = to_zpci(pdev);
75
76 return memory_read_from_buffer(buf, count, &off, zdev->util_str,
77 sizeof(zdev->util_str));
78}
79static BIN_ATTR_RO(util_string, CLP_UTIL_STR_LEN);
80static struct bin_attribute *zpci_bin_attrs[] = {
81 &bin_attr_util_string,
82 NULL,
83};
84
85static struct attribute *zpci_dev_attrs[] = {
86 &dev_attr_function_id.attr,
87 &dev_attr_function_handle.attr,
88 &dev_attr_pchid.attr,
89 &dev_attr_pfgid.attr,
90 &dev_attr_pft.attr,
91 &dev_attr_vfn.attr,
92 &dev_attr_uid.attr,
93 &dev_attr_recover.attr,
94 NULL,
95};
96static struct attribute_group zpci_attr_group = {
97 .attrs = zpci_dev_attrs,
98 .bin_attrs = zpci_bin_attrs,
99};
100
101static struct attribute *pfip_attrs[] = {
102 &dev_attr_segment0.attr,
103 &dev_attr_segment1.attr,
104 &dev_attr_segment2.attr,
105 &dev_attr_segment3.attr,
106 NULL,
107};
108static struct attribute_group pfip_attr_group = {
109 .name = "pfip",
110 .attrs = pfip_attrs,
111};
112
113const struct attribute_group *zpci_attr_groups[] = {
114 &zpci_attr_group,
115 &pfip_attr_group,
116 NULL,
117};
118
