Commit | Line | Data |
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4020f2d7 AD |
1 | /* |
2 | * tifm_core.c - TI FlashMedia driver | |
3 | * | |
4 | * Copyright (C) 2006 Alex Dubov <oakad@yahoo.com> | |
5 | * | |
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. | |
9 | * | |
10 | */ | |
11 | ||
12 | #include <linux/tifm.h> | |
5a0e3ad6 | 13 | #include <linux/slab.h> |
4020f2d7 AD |
14 | #include <linux/init.h> |
15 | #include <linux/idr.h> | |
16 | ||
17 | #define DRIVER_NAME "tifm_core" | |
4552f0cb | 18 | #define DRIVER_VERSION "0.8" |
4020f2d7 | 19 | |
3540af8f | 20 | static struct workqueue_struct *workqueue; |
4020f2d7 AD |
21 | static DEFINE_IDR(tifm_adapter_idr); |
22 | static DEFINE_SPINLOCK(tifm_adapter_lock); | |
23 | ||
e23f2b8a | 24 | static const char *tifm_media_type_name(unsigned char type, unsigned char nt) |
4020f2d7 | 25 | { |
e23f2b8a AD |
26 | const char *card_type_name[3][3] = { |
27 | { "SmartMedia/xD", "MemoryStick", "MMC/SD" }, | |
28 | { "XD", "MS", "SD"}, | |
29 | { "xd", "ms", "sd"} | |
30 | }; | |
31 | ||
32 | if (nt > 2 || type < 1 || type > 3) | |
33 | return NULL; | |
34 | return card_type_name[nt][type - 1]; | |
4020f2d7 AD |
35 | } |
36 | ||
e23f2b8a | 37 | static int tifm_dev_match(struct tifm_dev *sock, struct tifm_device_id *id) |
4020f2d7 | 38 | { |
e23f2b8a | 39 | if (sock->type == id->type) |
4020f2d7 | 40 | return 1; |
e23f2b8a AD |
41 | return 0; |
42 | } | |
43 | ||
44 | static int tifm_bus_match(struct device *dev, struct device_driver *drv) | |
45 | { | |
46 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); | |
47 | struct tifm_driver *fm_drv = container_of(drv, struct tifm_driver, | |
48 | driver); | |
49 | struct tifm_device_id *ids = fm_drv->id_table; | |
50 | ||
51 | if (ids) { | |
52 | while (ids->type) { | |
53 | if (tifm_dev_match(sock, ids)) | |
54 | return 1; | |
55 | ++ids; | |
56 | } | |
57 | } | |
58 | return 0; | |
4020f2d7 AD |
59 | } |
60 | ||
7eff2e7a | 61 | static int tifm_uevent(struct device *dev, struct kobj_uevent_env *env) |
4020f2d7 | 62 | { |
e23f2b8a | 63 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); |
4020f2d7 | 64 | |
7eff2e7a | 65 | if (add_uevent_var(env, "TIFM_CARD_TYPE=%s", tifm_media_type_name(sock->type, 1))) |
4020f2d7 AD |
66 | return -ENOMEM; |
67 | ||
68 | return 0; | |
69 | } | |
70 | ||
8dc4a61e AD |
71 | static int tifm_device_probe(struct device *dev) |
72 | { | |
73 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); | |
74 | struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, | |
75 | driver); | |
76 | int rc = -ENODEV; | |
77 | ||
78 | get_device(dev); | |
79 | if (dev->driver && drv->probe) { | |
80 | rc = drv->probe(sock); | |
81 | if (!rc) | |
82 | return 0; | |
83 | } | |
84 | put_device(dev); | |
85 | return rc; | |
86 | } | |
87 | ||
88 | static void tifm_dummy_event(struct tifm_dev *sock) | |
89 | { | |
90 | return; | |
91 | } | |
92 | ||
93 | static int tifm_device_remove(struct device *dev) | |
94 | { | |
95 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); | |
96 | struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, | |
97 | driver); | |
98 | ||
99 | if (dev->driver && drv->remove) { | |
100 | sock->card_event = tifm_dummy_event; | |
101 | sock->data_event = tifm_dummy_event; | |
102 | drv->remove(sock); | |
103 | sock->dev.driver = NULL; | |
104 | } | |
105 | ||
106 | put_device(dev); | |
107 | return 0; | |
108 | } | |
109 | ||
41d78f74 AD |
110 | #ifdef CONFIG_PM |
111 | ||
112 | static int tifm_device_suspend(struct device *dev, pm_message_t state) | |
113 | { | |
91f8d011 | 114 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); |
8dc4a61e AD |
115 | struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, |
116 | driver); | |
41d78f74 | 117 | |
8dc4a61e | 118 | if (dev->driver && drv->suspend) |
91f8d011 | 119 | return drv->suspend(sock, state); |
41d78f74 AD |
120 | return 0; |
121 | } | |
122 | ||
123 | static int tifm_device_resume(struct device *dev) | |
124 | { | |
91f8d011 | 125 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); |
8dc4a61e AD |
126 | struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, |
127 | driver); | |
41d78f74 | 128 | |
8dc4a61e | 129 | if (dev->driver && drv->resume) |
91f8d011 | 130 | return drv->resume(sock); |
41d78f74 AD |
131 | return 0; |
132 | } | |
133 | ||
134 | #else | |
135 | ||
136 | #define tifm_device_suspend NULL | |
137 | #define tifm_device_resume NULL | |
138 | ||
139 | #endif /* CONFIG_PM */ | |
140 | ||
4e64f223 AD |
141 | static ssize_t type_show(struct device *dev, struct device_attribute *attr, |
142 | char *buf) | |
143 | { | |
144 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); | |
145 | return sprintf(buf, "%x", sock->type); | |
146 | } | |
147 | ||
148 | static struct device_attribute tifm_dev_attrs[] = { | |
149 | __ATTR(type, S_IRUGO, type_show, NULL), | |
150 | __ATTR_NULL | |
151 | }; | |
152 | ||
4020f2d7 | 153 | static struct bus_type tifm_bus_type = { |
91f8d011 AD |
154 | .name = "tifm", |
155 | .dev_attrs = tifm_dev_attrs, | |
156 | .match = tifm_bus_match, | |
157 | .uevent = tifm_uevent, | |
158 | .probe = tifm_device_probe, | |
159 | .remove = tifm_device_remove, | |
160 | .suspend = tifm_device_suspend, | |
161 | .resume = tifm_device_resume | |
4020f2d7 AD |
162 | }; |
163 | ||
7dd817d0 | 164 | static void tifm_free(struct device *dev) |
4020f2d7 | 165 | { |
7dd817d0 | 166 | struct tifm_adapter *fm = container_of(dev, struct tifm_adapter, dev); |
4020f2d7 | 167 | |
4020f2d7 AD |
168 | kfree(fm); |
169 | } | |
170 | ||
171 | static struct class tifm_adapter_class = { | |
172 | .name = "tifm_adapter", | |
7dd817d0 | 173 | .dev_release = tifm_free |
4020f2d7 AD |
174 | }; |
175 | ||
6113ed73 AD |
176 | struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets, |
177 | struct device *dev) | |
4020f2d7 AD |
178 | { |
179 | struct tifm_adapter *fm; | |
180 | ||
6113ed73 AD |
181 | fm = kzalloc(sizeof(struct tifm_adapter) |
182 | + sizeof(struct tifm_dev*) * num_sockets, GFP_KERNEL); | |
4020f2d7 | 183 | if (fm) { |
7dd817d0 TJ |
184 | fm->dev.class = &tifm_adapter_class; |
185 | fm->dev.parent = dev; | |
186 | device_initialize(&fm->dev); | |
6113ed73 AD |
187 | spin_lock_init(&fm->lock); |
188 | fm->num_sockets = num_sockets; | |
4020f2d7 AD |
189 | } |
190 | return fm; | |
191 | } | |
192 | EXPORT_SYMBOL(tifm_alloc_adapter); | |
193 | ||
3540af8f | 194 | int tifm_add_adapter(struct tifm_adapter *fm) |
4020f2d7 AD |
195 | { |
196 | int rc; | |
197 | ||
198 | if (!idr_pre_get(&tifm_adapter_idr, GFP_KERNEL)) | |
199 | return -ENOMEM; | |
200 | ||
201 | spin_lock(&tifm_adapter_lock); | |
202 | rc = idr_get_new(&tifm_adapter_idr, fm, &fm->id); | |
203 | spin_unlock(&tifm_adapter_lock); | |
6113ed73 AD |
204 | if (rc) |
205 | return rc; | |
206 | ||
0bad16aa | 207 | dev_set_name(&fm->dev, "tifm%u", fm->id); |
7dd817d0 | 208 | rc = device_add(&fm->dev); |
6113ed73 AD |
209 | if (rc) { |
210 | spin_lock(&tifm_adapter_lock); | |
211 | idr_remove(&tifm_adapter_idr, fm->id); | |
212 | spin_unlock(&tifm_adapter_lock); | |
4020f2d7 | 213 | } |
6113ed73 | 214 | |
4020f2d7 AD |
215 | return rc; |
216 | } | |
217 | EXPORT_SYMBOL(tifm_add_adapter); | |
218 | ||
219 | void tifm_remove_adapter(struct tifm_adapter *fm) | |
220 | { | |
6113ed73 AD |
221 | unsigned int cnt; |
222 | ||
3540af8f | 223 | flush_workqueue(workqueue); |
6113ed73 AD |
224 | for (cnt = 0; cnt < fm->num_sockets; ++cnt) { |
225 | if (fm->sockets[cnt]) | |
226 | device_unregister(&fm->sockets[cnt]->dev); | |
227 | } | |
4020f2d7 AD |
228 | |
229 | spin_lock(&tifm_adapter_lock); | |
230 | idr_remove(&tifm_adapter_idr, fm->id); | |
231 | spin_unlock(&tifm_adapter_lock); | |
7dd817d0 | 232 | device_del(&fm->dev); |
4020f2d7 AD |
233 | } |
234 | EXPORT_SYMBOL(tifm_remove_adapter); | |
235 | ||
6113ed73 AD |
236 | void tifm_free_adapter(struct tifm_adapter *fm) |
237 | { | |
7dd817d0 | 238 | put_device(&fm->dev); |
6113ed73 AD |
239 | } |
240 | EXPORT_SYMBOL(tifm_free_adapter); | |
241 | ||
4020f2d7 AD |
242 | void tifm_free_device(struct device *dev) |
243 | { | |
2428a8fe AD |
244 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); |
245 | kfree(sock); | |
4020f2d7 AD |
246 | } |
247 | EXPORT_SYMBOL(tifm_free_device); | |
248 | ||
2428a8fe AD |
249 | struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm, unsigned int id, |
250 | unsigned char type) | |
4020f2d7 | 251 | { |
2428a8fe AD |
252 | struct tifm_dev *sock = NULL; |
253 | ||
254 | if (!tifm_media_type_name(type, 0)) | |
255 | return sock; | |
4020f2d7 | 256 | |
2428a8fe AD |
257 | sock = kzalloc(sizeof(struct tifm_dev), GFP_KERNEL); |
258 | if (sock) { | |
259 | spin_lock_init(&sock->lock); | |
260 | sock->type = type; | |
261 | sock->socket_id = id; | |
262 | sock->card_event = tifm_dummy_event; | |
263 | sock->data_event = tifm_dummy_event; | |
8e02f858 | 264 | |
7dd817d0 | 265 | sock->dev.parent = fm->dev.parent; |
2428a8fe | 266 | sock->dev.bus = &tifm_bus_type; |
7dd817d0 | 267 | sock->dev.dma_mask = fm->dev.parent->dma_mask; |
2428a8fe AD |
268 | sock->dev.release = tifm_free_device; |
269 | ||
0bad16aa KS |
270 | dev_set_name(&sock->dev, "tifm_%s%u:%u", |
271 | tifm_media_type_name(type, 2), fm->id, id); | |
2428a8fe AD |
272 | printk(KERN_INFO DRIVER_NAME |
273 | ": %s card detected in socket %u:%u\n", | |
274 | tifm_media_type_name(type, 0), fm->id, id); | |
4020f2d7 | 275 | } |
2428a8fe | 276 | return sock; |
4020f2d7 AD |
277 | } |
278 | EXPORT_SYMBOL(tifm_alloc_device); | |
279 | ||
280 | void tifm_eject(struct tifm_dev *sock) | |
281 | { | |
282 | struct tifm_adapter *fm = dev_get_drvdata(sock->dev.parent); | |
283 | fm->eject(fm, sock); | |
284 | } | |
285 | EXPORT_SYMBOL(tifm_eject); | |
286 | ||
baf8532a AD |
287 | int tifm_has_ms_pif(struct tifm_dev *sock) |
288 | { | |
289 | struct tifm_adapter *fm = dev_get_drvdata(sock->dev.parent); | |
290 | return fm->has_ms_pif(fm, sock); | |
291 | } | |
292 | EXPORT_SYMBOL(tifm_has_ms_pif); | |
293 | ||
4020f2d7 AD |
294 | int tifm_map_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents, |
295 | int direction) | |
296 | { | |
297 | return pci_map_sg(to_pci_dev(sock->dev.parent), sg, nents, direction); | |
298 | } | |
299 | EXPORT_SYMBOL(tifm_map_sg); | |
300 | ||
301 | void tifm_unmap_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents, | |
302 | int direction) | |
303 | { | |
304 | pci_unmap_sg(to_pci_dev(sock->dev.parent), sg, nents, direction); | |
305 | } | |
306 | EXPORT_SYMBOL(tifm_unmap_sg); | |
307 | ||
3540af8f AD |
308 | void tifm_queue_work(struct work_struct *work) |
309 | { | |
310 | queue_work(workqueue, work); | |
311 | } | |
312 | EXPORT_SYMBOL(tifm_queue_work); | |
313 | ||
4020f2d7 AD |
314 | int tifm_register_driver(struct tifm_driver *drv) |
315 | { | |
316 | drv->driver.bus = &tifm_bus_type; | |
4020f2d7 AD |
317 | |
318 | return driver_register(&drv->driver); | |
319 | } | |
320 | EXPORT_SYMBOL(tifm_register_driver); | |
321 | ||
322 | void tifm_unregister_driver(struct tifm_driver *drv) | |
323 | { | |
324 | driver_unregister(&drv->driver); | |
325 | } | |
326 | EXPORT_SYMBOL(tifm_unregister_driver); | |
327 | ||
328 | static int __init tifm_init(void) | |
329 | { | |
3540af8f | 330 | int rc; |
4020f2d7 | 331 | |
58a69cb4 | 332 | workqueue = create_freezable_workqueue("tifm"); |
3540af8f AD |
333 | if (!workqueue) |
334 | return -ENOMEM; | |
335 | ||
336 | rc = bus_register(&tifm_bus_type); | |
337 | ||
338 | if (rc) | |
339 | goto err_out_wq; | |
340 | ||
341 | rc = class_register(&tifm_adapter_class); | |
342 | if (!rc) | |
343 | return 0; | |
344 | ||
345 | bus_unregister(&tifm_bus_type); | |
346 | ||
347 | err_out_wq: | |
348 | destroy_workqueue(workqueue); | |
4020f2d7 AD |
349 | |
350 | return rc; | |
351 | } | |
352 | ||
353 | static void __exit tifm_exit(void) | |
354 | { | |
355 | class_unregister(&tifm_adapter_class); | |
356 | bus_unregister(&tifm_bus_type); | |
3540af8f | 357 | destroy_workqueue(workqueue); |
4020f2d7 AD |
358 | } |
359 | ||
360 | subsys_initcall(tifm_init); | |
361 | module_exit(tifm_exit); | |
362 | ||
363 | MODULE_LICENSE("GPL"); | |
364 | MODULE_AUTHOR("Alex Dubov"); | |
365 | MODULE_DESCRIPTION("TI FlashMedia core driver"); | |
366 | MODULE_LICENSE("GPL"); | |
367 | MODULE_VERSION(DRIVER_VERSION); |