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1/*
2 * TURBOchannel driver services.
3 *
4 * Copyright (c) 2005 James Simmons
5 * Copyright (c) 2006 Maciej W. Rozycki
6 *
7 * Loosely based on drivers/dio/dio-driver.c and
8 * drivers/pci/pci-driver.c.
9 *
10 * This file is subject to the terms and conditions of the GNU
11 * General Public License. See the file "COPYING" in the main
12 * directory of this archive for more details.
13 */
14
15#include <linux/init.h>
16#include <linux/module.h>
17#include <linux/tc.h>
18
19/**
20 * tc_register_driver - register a new TC driver
21 * @drv: the driver structure to register
22 *
23 * Adds the driver structure to the list of registered drivers
24 * Returns a negative value on error, otherwise 0.
25 * If no error occurred, the driver remains registered even if
26 * no device was claimed during registration.
27 */
28int tc_register_driver(struct tc_driver *tdrv)
29{
30 return driver_register(&tdrv->driver);
31}
32EXPORT_SYMBOL(tc_register_driver);
33
34/**
35 * tc_unregister_driver - unregister a TC driver
36 * @drv: the driver structure to unregister
37 *
38 * Deletes the driver structure from the list of registered TC drivers,
39 * gives it a chance to clean up by calling its remove() function for
40 * each device it was responsible for, and marks those devices as
41 * driverless.
42 */
43void tc_unregister_driver(struct tc_driver *tdrv)
44{
45 driver_unregister(&tdrv->driver);
46}
47EXPORT_SYMBOL(tc_unregister_driver);
48
49/**
50 * tc_match_device - tell if a TC device structure has a matching
51 * TC device ID structure
52 * @tdrv: the TC driver to earch for matching TC device ID strings
53 * @tdev: the TC device structure to match against
54 *
55 * Used by a driver to check whether a TC device present in the
56 * system is in its list of supported devices. Returns the matching
57 * tc_device_id structure or %NULL if there is no match.
58 */
59static const struct tc_device_id *tc_match_device(struct tc_driver *tdrv,
60 struct tc_dev *tdev)
61{
62 const struct tc_device_id *id = tdrv->id_table;
63
64 if (id) {
65 while (id->name[0] || id->vendor[0]) {
66 if (strcmp(tdev->name, id->name) == 0 &&
67 strcmp(tdev->vendor, id->vendor) == 0)
68 return id;
69 id++;
70 }
71 }
72 return NULL;
73}
74
75/**
76 * tc_bus_match - Tell if a device structure has a matching
77 * TC device ID structure
78 * @dev: the device structure to match against
79 * @drv: the device driver to search for matching TC device ID strings
80 *
81 * Used by a driver to check whether a TC device present in the
82 * system is in its list of supported devices. Returns 1 if there
83 * is a match or 0 otherwise.
84 */
85static int tc_bus_match(struct device *dev, struct device_driver *drv)
86{
87 struct tc_dev *tdev = to_tc_dev(dev);
88 struct tc_driver *tdrv = to_tc_driver(drv);
89 const struct tc_device_id *id;
90
91 id = tc_match_device(tdrv, tdev);
92 if (id)
93 return 1;
94
95 return 0;
96}
97
98struct bus_type tc_bus_type = {
99 .name = "tc",
100 .match = tc_bus_match,
101};
102EXPORT_SYMBOL(tc_bus_type);
103
104static int __init tc_driver_init(void)
105{
106 return bus_register(&tc_bus_type);
107}
108
109postcore_initcall(tc_driver_init);
1/*
2 * TURBOchannel driver services.
3 *
4 * Copyright (c) 2005 James Simmons
5 * Copyright (c) 2006 Maciej W. Rozycki
6 *
7 * Loosely based on drivers/dio/dio-driver.c and
8 * drivers/pci/pci-driver.c.
9 *
10 * This file is subject to the terms and conditions of the GNU
11 * General Public License. See the file "COPYING" in the main
12 * directory of this archive for more details.
13 */
14
15#include <linux/init.h>
16#include <linux/module.h>
17#include <linux/tc.h>
18
19/**
20 * tc_register_driver - register a new TC driver
21 * @drv: the driver structure to register
22 *
23 * Adds the driver structure to the list of registered drivers
24 * Returns a negative value on error, otherwise 0.
25 * If no error occurred, the driver remains registered even if
26 * no device was claimed during registration.
27 */
28int tc_register_driver(struct tc_driver *tdrv)
29{
30 return driver_register(&tdrv->driver);
31}
32EXPORT_SYMBOL(tc_register_driver);
33
34/**
35 * tc_unregister_driver - unregister a TC driver
36 * @drv: the driver structure to unregister
37 *
38 * Deletes the driver structure from the list of registered TC drivers,
39 * gives it a chance to clean up by calling its remove() function for
40 * each device it was responsible for, and marks those devices as
41 * driverless.
42 */
43void tc_unregister_driver(struct tc_driver *tdrv)
44{
45 driver_unregister(&tdrv->driver);
46}
47EXPORT_SYMBOL(tc_unregister_driver);
48
49/**
50 * tc_match_device - tell if a TC device structure has a matching
51 * TC device ID structure
52 * @tdrv: the TC driver to earch for matching TC device ID strings
53 * @tdev: the TC device structure to match against
54 *
55 * Used by a driver to check whether a TC device present in the
56 * system is in its list of supported devices. Returns the matching
57 * tc_device_id structure or %NULL if there is no match.
58 */
59static const struct tc_device_id *tc_match_device(const struct tc_driver *tdrv,
60 struct tc_dev *tdev)
61{
62 const struct tc_device_id *id = tdrv->id_table;
63
64 if (id) {
65 while (id->name[0] || id->vendor[0]) {
66 if (strcmp(tdev->name, id->name) == 0 &&
67 strcmp(tdev->vendor, id->vendor) == 0)
68 return id;
69 id++;
70 }
71 }
72 return NULL;
73}
74
75/**
76 * tc_bus_match - Tell if a device structure has a matching
77 * TC device ID structure
78 * @dev: the device structure to match against
79 * @drv: the device driver to search for matching TC device ID strings
80 *
81 * Used by a driver to check whether a TC device present in the
82 * system is in its list of supported devices. Returns 1 if there
83 * is a match or 0 otherwise.
84 */
85static int tc_bus_match(struct device *dev, const struct device_driver *drv)
86{
87 struct tc_dev *tdev = to_tc_dev(dev);
88 const struct tc_driver *tdrv = to_tc_driver(drv);
89 const struct tc_device_id *id;
90
91 id = tc_match_device(tdrv, tdev);
92 if (id)
93 return 1;
94
95 return 0;
96}
97
98const struct bus_type tc_bus_type = {
99 .name = "tc",
100 .match = tc_bus_match,
101};
102EXPORT_SYMBOL(tc_bus_type);
103
104static int __init tc_driver_init(void)
105{
106 return bus_register(&tc_bus_type);
107}
108
109postcore_initcall(tc_driver_init);