2 * tifm_core.c - TI FlashMedia driver
4 * Copyright (C) 2006 Alex Dubov <oakad@yahoo.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
12 #include <linux/tifm.h>
13 #include <linux/init.h>
14 #include <linux/idr.h>
16 #define DRIVER_NAME "tifm_core"
17 #define DRIVER_VERSION "0.6"
19 static DEFINE_IDR(tifm_adapter_idr);
20 static DEFINE_SPINLOCK(tifm_adapter_lock);
22 static tifm_media_id *tifm_device_match(tifm_media_id *ids,
26 if (dev->media_id == *ids)
33 static int tifm_match(struct device *dev, struct device_driver *drv)
35 struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
36 struct tifm_driver *fm_drv;
38 fm_drv = container_of(drv, struct tifm_driver, driver);
39 if (!fm_drv->id_table)
41 if (tifm_device_match(fm_drv->id_table, fm_dev))
46 static int tifm_uevent(struct device *dev, char **envp, int num_envp,
47 char *buffer, int buffer_size)
49 struct tifm_dev *fm_dev;
52 const char *card_type_name[] = {"INV", "SM", "MS", "SD"};
54 if (!dev || !(fm_dev = container_of(dev, struct tifm_dev, dev)))
56 if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
57 "TIFM_CARD_TYPE=%s", card_type_name[fm_dev->media_id]))
63 static struct bus_type tifm_bus_type = {
66 .uevent = tifm_uevent,
69 static void tifm_free(struct class_device *cdev)
71 struct tifm_adapter *fm = container_of(cdev, struct tifm_adapter, cdev);
75 destroy_workqueue(fm->wq);
79 static struct class tifm_adapter_class = {
80 .name = "tifm_adapter",
84 struct tifm_adapter *tifm_alloc_adapter(void)
86 struct tifm_adapter *fm;
88 fm = kzalloc(sizeof(struct tifm_adapter), GFP_KERNEL);
90 fm->cdev.class = &tifm_adapter_class;
91 spin_lock_init(&fm->lock);
92 class_device_initialize(&fm->cdev);
96 EXPORT_SYMBOL(tifm_alloc_adapter);
98 void tifm_free_adapter(struct tifm_adapter *fm)
100 class_device_put(&fm->cdev);
102 EXPORT_SYMBOL(tifm_free_adapter);
104 int tifm_add_adapter(struct tifm_adapter *fm)
108 if (!idr_pre_get(&tifm_adapter_idr, GFP_KERNEL))
111 spin_lock(&tifm_adapter_lock);
112 rc = idr_get_new(&tifm_adapter_idr, fm, &fm->id);
113 spin_unlock(&tifm_adapter_lock);
115 snprintf(fm->cdev.class_id, BUS_ID_SIZE, "tifm%u", fm->id);
116 strncpy(fm->wq_name, fm->cdev.class_id, KOBJ_NAME_LEN);
118 fm->wq = create_singlethread_workqueue(fm->wq_name);
120 return class_device_add(&fm->cdev);
122 spin_lock(&tifm_adapter_lock);
123 idr_remove(&tifm_adapter_idr, fm->id);
124 spin_unlock(&tifm_adapter_lock);
129 EXPORT_SYMBOL(tifm_add_adapter);
131 void tifm_remove_adapter(struct tifm_adapter *fm)
133 class_device_del(&fm->cdev);
135 spin_lock(&tifm_adapter_lock);
136 idr_remove(&tifm_adapter_idr, fm->id);
137 spin_unlock(&tifm_adapter_lock);
139 EXPORT_SYMBOL(tifm_remove_adapter);
141 void tifm_free_device(struct device *dev)
143 struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
146 EXPORT_SYMBOL(tifm_free_device);
148 struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm)
150 struct tifm_dev *dev = kzalloc(sizeof(struct tifm_dev), GFP_KERNEL);
153 spin_lock_init(&dev->lock);
155 dev->dev.parent = fm->dev;
156 dev->dev.bus = &tifm_bus_type;
157 dev->dev.release = tifm_free_device;
161 EXPORT_SYMBOL(tifm_alloc_device);
163 void tifm_eject(struct tifm_dev *sock)
165 struct tifm_adapter *fm = dev_get_drvdata(sock->dev.parent);
168 EXPORT_SYMBOL(tifm_eject);
170 int tifm_map_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
173 return pci_map_sg(to_pci_dev(sock->dev.parent), sg, nents, direction);
175 EXPORT_SYMBOL(tifm_map_sg);
177 void tifm_unmap_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
180 pci_unmap_sg(to_pci_dev(sock->dev.parent), sg, nents, direction);
182 EXPORT_SYMBOL(tifm_unmap_sg);
184 static int tifm_device_probe(struct device *dev)
186 struct tifm_driver *drv;
187 struct tifm_dev *fm_dev;
189 const tifm_media_id *id;
191 drv = container_of(dev->driver, struct tifm_driver, driver);
192 fm_dev = container_of(dev, struct tifm_dev, dev);
194 if (!fm_dev->drv && drv->probe && drv->id_table) {
196 id = tifm_device_match(drv->id_table, fm_dev);
198 rc = drv->probe(fm_dev);
209 static int tifm_device_remove(struct device *dev)
211 struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
212 struct tifm_driver *drv = fm_dev->drv;
224 int tifm_register_driver(struct tifm_driver *drv)
226 drv->driver.bus = &tifm_bus_type;
227 drv->driver.probe = tifm_device_probe;
228 drv->driver.remove = tifm_device_remove;
230 return driver_register(&drv->driver);
232 EXPORT_SYMBOL(tifm_register_driver);
234 void tifm_unregister_driver(struct tifm_driver *drv)
236 driver_unregister(&drv->driver);
238 EXPORT_SYMBOL(tifm_unregister_driver);
240 static int __init tifm_init(void)
242 int rc = bus_register(&tifm_bus_type);
245 rc = class_register(&tifm_adapter_class);
247 bus_unregister(&tifm_bus_type);
253 static void __exit tifm_exit(void)
255 class_unregister(&tifm_adapter_class);
256 bus_unregister(&tifm_bus_type);
259 subsys_initcall(tifm_init);
260 module_exit(tifm_exit);
262 MODULE_LICENSE("GPL");
263 MODULE_AUTHOR("Alex Dubov");
264 MODULE_DESCRIPTION("TI FlashMedia core driver");
265 MODULE_LICENSE("GPL");
266 MODULE_VERSION(DRIVER_VERSION);