11da177e4SLinus Torvalds /*
21da177e4SLinus Torvalds * Zorro Driver Services
31da177e4SLinus Torvalds *
41da177e4SLinus Torvalds * Copyright (C) 2003 Geert Uytterhoeven
51da177e4SLinus Torvalds *
61da177e4SLinus Torvalds * Loosely based on drivers/pci/pci-driver.c
71da177e4SLinus Torvalds *
81da177e4SLinus Torvalds * This file is subject to the terms and conditions of the GNU General Public
91da177e4SLinus Torvalds * License. See the file COPYING in the main directory of this archive
101da177e4SLinus Torvalds * for more details.
111da177e4SLinus Torvalds */
121da177e4SLinus Torvalds
131da177e4SLinus Torvalds #include <linux/init.h>
141da177e4SLinus Torvalds #include <linux/module.h>
151da177e4SLinus Torvalds #include <linux/zorro.h>
161da177e4SLinus Torvalds
1787e715deSDmitry Torokhov #include "zorro.h"
1887e715deSDmitry Torokhov
191da177e4SLinus Torvalds
201da177e4SLinus Torvalds /**
211da177e4SLinus Torvalds * zorro_match_device - Tell if a Zorro device structure has a matching
221da177e4SLinus Torvalds * Zorro device id structure
231da177e4SLinus Torvalds * @ids: array of Zorro device id structures to search in
241da177e4SLinus Torvalds * @dev: the Zorro device structure to match against
251da177e4SLinus Torvalds *
261da177e4SLinus Torvalds * Used by a driver to check whether a Zorro device present in the
271da177e4SLinus Torvalds * system is in its list of supported devices. Returns the matching
281da177e4SLinus Torvalds * zorro_device_id structure or %NULL if there is no match.
291da177e4SLinus Torvalds */
301da177e4SLinus Torvalds
310cfb07c5SGeert Uytterhoeven static const struct zorro_device_id *
zorro_match_device(const struct zorro_device_id * ids,const struct zorro_dev * z)321da177e4SLinus Torvalds zorro_match_device(const struct zorro_device_id *ids,
331da177e4SLinus Torvalds const struct zorro_dev *z)
341da177e4SLinus Torvalds {
351da177e4SLinus Torvalds while (ids->id) {
361da177e4SLinus Torvalds if (ids->id == ZORRO_WILDCARD || ids->id == z->id)
371da177e4SLinus Torvalds return ids;
381da177e4SLinus Torvalds ids++;
391da177e4SLinus Torvalds }
401da177e4SLinus Torvalds return NULL;
411da177e4SLinus Torvalds }
421da177e4SLinus Torvalds
431da177e4SLinus Torvalds
zorro_device_probe(struct device * dev)441da177e4SLinus Torvalds static int zorro_device_probe(struct device *dev)
451da177e4SLinus Torvalds {
461da177e4SLinus Torvalds int error = 0;
471da177e4SLinus Torvalds struct zorro_driver *drv = to_zorro_driver(dev->driver);
481da177e4SLinus Torvalds struct zorro_dev *z = to_zorro_dev(dev);
491da177e4SLinus Torvalds
50fac58b4aSUwe Kleine-König if (drv->probe) {
511da177e4SLinus Torvalds const struct zorro_device_id *id;
521da177e4SLinus Torvalds
531da177e4SLinus Torvalds id = zorro_match_device(drv->id_table, z);
541da177e4SLinus Torvalds if (id)
551da177e4SLinus Torvalds error = drv->probe(z, id);
56fac58b4aSUwe Kleine-König if (error >= 0)
571da177e4SLinus Torvalds error = 0;
581da177e4SLinus Torvalds }
591da177e4SLinus Torvalds return error;
601da177e4SLinus Torvalds }
611da177e4SLinus Torvalds
621da177e4SLinus Torvalds
zorro_device_remove(struct device * dev)63fc7a6209SUwe Kleine-König static void zorro_device_remove(struct device *dev)
642f9b0b5eSGeert Uytterhoeven {
652f9b0b5eSGeert Uytterhoeven struct zorro_dev *z = to_zorro_dev(dev);
662f9b0b5eSGeert Uytterhoeven struct zorro_driver *drv = to_zorro_driver(dev->driver);
672f9b0b5eSGeert Uytterhoeven
682f9b0b5eSGeert Uytterhoeven if (drv->remove)
692f9b0b5eSGeert Uytterhoeven drv->remove(z);
702f9b0b5eSGeert Uytterhoeven }
712f9b0b5eSGeert Uytterhoeven
722f9b0b5eSGeert Uytterhoeven
731da177e4SLinus Torvalds /**
741da177e4SLinus Torvalds * zorro_register_driver - register a new Zorro driver
751da177e4SLinus Torvalds * @drv: the driver structure to register
761da177e4SLinus Torvalds *
771da177e4SLinus Torvalds * Adds the driver structure to the list of registered drivers
7833d8675eSBjorn Helgaas * Returns zero or a negative error value.
791da177e4SLinus Torvalds */
801da177e4SLinus Torvalds
zorro_register_driver(struct zorro_driver * drv)811da177e4SLinus Torvalds int zorro_register_driver(struct zorro_driver *drv)
821da177e4SLinus Torvalds {
831da177e4SLinus Torvalds /* initialize common driver fields */
841da177e4SLinus Torvalds drv->driver.name = drv->name;
851da177e4SLinus Torvalds drv->driver.bus = &zorro_bus_type;
861da177e4SLinus Torvalds
871da177e4SLinus Torvalds /* register with core */
8833d8675eSBjorn Helgaas return driver_register(&drv->driver);
891da177e4SLinus Torvalds }
90d996e9dcSJim Rotmalm EXPORT_SYMBOL(zorro_register_driver);
911da177e4SLinus Torvalds
921da177e4SLinus Torvalds
931da177e4SLinus Torvalds /**
941da177e4SLinus Torvalds * zorro_unregister_driver - unregister a zorro driver
951da177e4SLinus Torvalds * @drv: the driver structure to unregister
961da177e4SLinus Torvalds *
971da177e4SLinus Torvalds * Deletes the driver structure from the list of registered Zorro drivers,
981da177e4SLinus Torvalds * gives it a chance to clean up by calling its remove() function for
991da177e4SLinus Torvalds * each device it was responsible for, and marks those devices as
1001da177e4SLinus Torvalds * driverless.
1011da177e4SLinus Torvalds */
1021da177e4SLinus Torvalds
zorro_unregister_driver(struct zorro_driver * drv)1031da177e4SLinus Torvalds void zorro_unregister_driver(struct zorro_driver *drv)
1041da177e4SLinus Torvalds {
1051da177e4SLinus Torvalds driver_unregister(&drv->driver);
1061da177e4SLinus Torvalds }
107d996e9dcSJim Rotmalm EXPORT_SYMBOL(zorro_unregister_driver);
1081da177e4SLinus Torvalds
1091da177e4SLinus Torvalds
1101da177e4SLinus Torvalds /**
1111da177e4SLinus Torvalds * zorro_bus_match - Tell if a Zorro device structure has a matching Zorro
1121da177e4SLinus Torvalds * device id structure
1131da177e4SLinus Torvalds * @ids: array of Zorro device id structures to search in
1141da177e4SLinus Torvalds * @dev: the Zorro device structure to match against
1151da177e4SLinus Torvalds *
116aeee094dSGeert Uytterhoeven * Used by the driver core to check whether a Zorro device present in the
117aeee094dSGeert Uytterhoeven * system is in a driver's list of supported devices. Returns 1 if
118aeee094dSGeert Uytterhoeven * supported, and 0 if there is no match.
1191da177e4SLinus Torvalds */
1201da177e4SLinus Torvalds
zorro_bus_match(struct device * dev,struct device_driver * drv)1211da177e4SLinus Torvalds static int zorro_bus_match(struct device *dev, struct device_driver *drv)
1221da177e4SLinus Torvalds {
1231da177e4SLinus Torvalds struct zorro_dev *z = to_zorro_dev(dev);
1241da177e4SLinus Torvalds struct zorro_driver *zorro_drv = to_zorro_driver(drv);
1251da177e4SLinus Torvalds const struct zorro_device_id *ids = zorro_drv->id_table;
1261da177e4SLinus Torvalds
1271da177e4SLinus Torvalds if (!ids)
1281da177e4SLinus Torvalds return 0;
1291da177e4SLinus Torvalds
1303d52910eSGeert Uytterhoeven return !!zorro_match_device(ids, z);
1311da177e4SLinus Torvalds }
1321da177e4SLinus Torvalds
zorro_uevent(const struct device * dev,struct kobj_uevent_env * env)133*2a81ada3SGreg Kroah-Hartman static int zorro_uevent(const struct device *dev, struct kobj_uevent_env *env)
134bf54a2b3SGeert Uytterhoeven {
135*2a81ada3SGreg Kroah-Hartman const struct zorro_dev *z;
136bf54a2b3SGeert Uytterhoeven
137bf54a2b3SGeert Uytterhoeven if (!dev)
138bf54a2b3SGeert Uytterhoeven return -ENODEV;
139bf54a2b3SGeert Uytterhoeven
140bf54a2b3SGeert Uytterhoeven z = to_zorro_dev(dev);
141bf54a2b3SGeert Uytterhoeven if (!z)
142bf54a2b3SGeert Uytterhoeven return -ENODEV;
143bf54a2b3SGeert Uytterhoeven
144bf54a2b3SGeert Uytterhoeven if (add_uevent_var(env, "ZORRO_ID=%08X", z->id) ||
145bf54a2b3SGeert Uytterhoeven add_uevent_var(env, "ZORRO_SLOT_NAME=%s", dev_name(dev)) ||
146bf54a2b3SGeert Uytterhoeven add_uevent_var(env, "ZORRO_SLOT_ADDR=%04X", z->slotaddr) ||
147bf54a2b3SGeert Uytterhoeven add_uevent_var(env, "MODALIAS=" ZORRO_DEVICE_MODALIAS_FMT, z->id))
148bf54a2b3SGeert Uytterhoeven return -ENOMEM;
149bf54a2b3SGeert Uytterhoeven
150bf54a2b3SGeert Uytterhoeven return 0;
151bf54a2b3SGeert Uytterhoeven }
1521da177e4SLinus Torvalds
1531da177e4SLinus Torvalds struct bus_type zorro_bus_type = {
1541da177e4SLinus Torvalds .name = "zorro",
15583b7bce3SGeert Uytterhoeven .dev_name = "zorro",
15687e715deSDmitry Torokhov .dev_groups = zorro_device_attribute_groups,
157b6a01e9bSRussell King .match = zorro_bus_match,
158bf54a2b3SGeert Uytterhoeven .uevent = zorro_uevent,
159b6a01e9bSRussell King .probe = zorro_device_probe,
1602f9b0b5eSGeert Uytterhoeven .remove = zorro_device_remove,
1611da177e4SLinus Torvalds };
162d996e9dcSJim Rotmalm EXPORT_SYMBOL(zorro_bus_type);
1631da177e4SLinus Torvalds
1641da177e4SLinus Torvalds
zorro_driver_init(void)1651da177e4SLinus Torvalds static int __init zorro_driver_init(void)
1661da177e4SLinus Torvalds {
1671da177e4SLinus Torvalds return bus_register(&zorro_bus_type);
1681da177e4SLinus Torvalds }
1691da177e4SLinus Torvalds
1701da177e4SLinus Torvalds postcore_initcall(zorro_driver_init);
1711da177e4SLinus Torvalds
172