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
|
// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2021 Intel Corporation. All rights rsvd. */
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/device.h>
#include "idxd.h"
int __idxd_driver_register(struct idxd_device_driver *idxd_drv, struct module *owner,
const char *mod_name)
{
struct device_driver *drv = &idxd_drv->drv;
if (!idxd_drv->type) {
pr_debug("driver type not set (%ps)\n", __builtin_return_address(0));
return -EINVAL;
}
drv->name = idxd_drv->name;
drv->bus = &dsa_bus_type;
drv->owner = owner;
drv->mod_name = mod_name;
return driver_register(drv);
}
EXPORT_SYMBOL_GPL(__idxd_driver_register);
void idxd_driver_unregister(struct idxd_device_driver *idxd_drv)
{
driver_unregister(&idxd_drv->drv);
}
EXPORT_SYMBOL_GPL(idxd_driver_unregister);
static int idxd_config_bus_match(struct device *dev,
struct device_driver *drv)
{
struct idxd_device_driver *idxd_drv =
container_of(drv, struct idxd_device_driver, drv);
struct idxd_dev *idxd_dev = confdev_to_idxd_dev(dev);
int i = 0;
while (idxd_drv->type[i] != IDXD_DEV_NONE) {
if (idxd_dev->type == idxd_drv->type[i])
return 1;
i++;
}
return 0;
}
static int idxd_config_bus_probe(struct device *dev)
{
struct idxd_device_driver *idxd_drv =
container_of(dev->driver, struct idxd_device_driver, drv);
struct idxd_dev *idxd_dev = confdev_to_idxd_dev(dev);
return idxd_drv->probe(idxd_dev);
}
static void idxd_config_bus_remove(struct device *dev)
{
struct idxd_device_driver *idxd_drv =
container_of(dev->driver, struct idxd_device_driver, drv);
struct idxd_dev *idxd_dev = confdev_to_idxd_dev(dev);
idxd_drv->remove(idxd_dev);
}
struct bus_type dsa_bus_type = {
.name = "dsa",
.match = idxd_config_bus_match,
.probe = idxd_config_bus_probe,
.remove = idxd_config_bus_remove,
};
EXPORT_SYMBOL_GPL(dsa_bus_type);
static int __init dsa_bus_init(void)
{
return bus_register(&dsa_bus_type);
}
module_init(dsa_bus_init);
static void __exit dsa_bus_exit(void)
{
bus_unregister(&dsa_bus_type);
}
module_exit(dsa_bus_exit);
MODULE_DESCRIPTION("IDXD driver dsa_bus_type driver");
MODULE_LICENSE("GPL v2");
|
