projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b454cc66 MR |
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 | */ | |
| 28 | int tc_register_driver(struct tc_driver *tdrv) | |
| 29 | { | |
| 30 | return driver_register(&tdrv->driver); | |
| 31 | } | |
| 32 | EXPORT_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 | */ | |
| 43 | void tc_unregister_driver(struct tc_driver *tdrv) | |
| 44 | { | |
| 45 | driver_unregister(&tdrv->driver); | |
| 46 | } | |
| 47 | EXPORT_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 | */ | |
| 59 | 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 | EXPORT_SYMBOL(tc_match_device); | |
| 75 | ||
| 76 | /** | |
| 77 | * tc_bus_match - Tell if a device structure has a matching | |
| 78 | * TC device ID structure | |
| 79 | * @dev: the device structure to match against | |
| 80 | * @drv: the device driver to search for matching TC device ID strings | |
| 81 | * | |
| 82 | * Used by a driver to check whether a TC device present in the | |
| 83 | * system is in its list of supported devices. Returns 1 if there | |
| 84 | * is a match or 0 otherwise. | |
| 85 | */ | |
| 86 | static int tc_bus_match(struct device *dev, struct device_driver *drv) | |
| 87 | { | |
| 88 | struct tc_dev *tdev = to_tc_dev(dev); | |
| 89 | struct tc_driver *tdrv = to_tc_driver(drv); | |
| 90 | const struct tc_device_id *id; | |
| 91 | ||
| 92 | id = tc_match_device(tdrv, tdev); | |
| 93 | if (id) | |
| 94 | return 1; | |
| 95 | ||
| 96 | return 0; | |
| 97 | } | |
| 98 | ||
| 99 | struct bus_type tc_bus_type = { | |
| 100 | .name = "tc", | |
| 101 | .match = tc_bus_match, | |
| 102 | }; | |
| 103 | EXPORT_SYMBOL(tc_bus_type); | |
| 104 | ||
| 105 | static int __init tc_driver_init(void) | |
| 106 | { | |
| 107 | return bus_register(&tc_bus_type); | |
| 108 | } | |
| 109 | ||
| 110 | postcore_initcall(tc_driver_init); |