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024f7f31 IPG |
1 | /* |
2 | * Intel Wireless WiMAX Connection 2400m | |
3 | * Generic probe/disconnect, reset and message passing | |
4 | * | |
5 | * | |
6 | * Copyright (C) 2007-2008 Intel Corporation <linux-wimax@intel.com> | |
7 | * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License version | |
11 | * 2 as published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
21 | * 02110-1301, USA. | |
22 | * | |
23 | * | |
24 | * See i2400m.h for driver documentation. This contains helpers for | |
25 | * the driver model glue [_setup()/_release()], handling device resets | |
26 | * [_dev_reset_handle()], and the backends for the WiMAX stack ops | |
27 | * reset [_op_reset()] and message from user [_op_msg_from_user()]. | |
28 | * | |
29 | * ROADMAP: | |
30 | * | |
31 | * i2400m_op_msg_from_user() | |
32 | * i2400m_msg_to_dev() | |
33 | * wimax_msg_to_user_send() | |
34 | * | |
35 | * i2400m_op_reset() | |
36 | * i240m->bus_reset() | |
37 | * | |
38 | * i2400m_dev_reset_handle() | |
39 | * __i2400m_dev_reset_handle() | |
40 | * __i2400m_dev_stop() | |
41 | * __i2400m_dev_start() | |
42 | * | |
43 | * i2400m_setup() | |
0856ccf2 | 44 | * i2400m->bus_setup() |
024f7f31 IPG |
45 | * i2400m_bootrom_init() |
46 | * register_netdev() | |
0856ccf2 | 47 | * wimax_dev_add() |
024f7f31 IPG |
48 | * i2400m_dev_start() |
49 | * __i2400m_dev_start() | |
50 | * i2400m_dev_bootstrap() | |
51 | * i2400m_tx_setup() | |
52 | * i2400m->bus_dev_start() | |
6a0f7ab8 | 53 | * i2400m_firmware_check() |
024f7f31 | 54 | * i2400m_check_mac_addr() |
024f7f31 IPG |
55 | * |
56 | * i2400m_release() | |
024f7f31 IPG |
57 | * i2400m_dev_stop() |
58 | * __i2400m_dev_stop() | |
59 | * i2400m_dev_shutdown() | |
60 | * i2400m->bus_dev_stop() | |
61 | * i2400m_tx_release() | |
0856ccf2 IPG |
62 | * i2400m->bus_release() |
63 | * wimax_dev_rm() | |
024f7f31 IPG |
64 | * unregister_netdev() |
65 | */ | |
66 | #include "i2400m.h" | |
fe442683 | 67 | #include <linux/etherdevice.h> |
024f7f31 IPG |
68 | #include <linux/wimax/i2400m.h> |
69 | #include <linux/module.h> | |
70 | #include <linux/moduleparam.h> | |
7b43ca70 | 71 | #include <linux/suspend.h> |
5a0e3ad6 | 72 | #include <linux/slab.h> |
024f7f31 IPG |
73 | |
74 | #define D_SUBMODULE driver | |
75 | #include "debug-levels.h" | |
76 | ||
77 | ||
4c2b1a11 IPG |
78 | static char i2400m_debug_params[128]; |
79 | module_param_string(debug, i2400m_debug_params, sizeof(i2400m_debug_params), | |
80 | 0644); | |
81 | MODULE_PARM_DESC(debug, | |
82 | "String of space-separated NAME:VALUE pairs, where NAMEs " | |
83 | "are the different debug submodules and VALUE are the " | |
84 | "initial debug value to set."); | |
85 | ||
aba3792a IPG |
86 | static char i2400m_barkers_params[128]; |
87 | module_param_string(barkers, i2400m_barkers_params, | |
88 | sizeof(i2400m_barkers_params), 0644); | |
89 | MODULE_PARM_DESC(barkers, | |
90 | "String of comma-separated 32-bit values; each is " | |
91 | "recognized as the value the device sends as a reboot " | |
92 | "signal; values are appended to a list--setting one value " | |
93 | "as zero cleans the existing list and starts a new one."); | |
94 | ||
024f7f31 IPG |
95 | /* |
96 | * WiMAX stack operation: relay a message from user space | |
97 | * | |
98 | * @wimax_dev: device descriptor | |
99 | * @pipe_name: named pipe the message is for | |
100 | * @msg_buf: pointer to the message bytes | |
101 | * @msg_len: length of the buffer | |
102 | * @genl_info: passed by the generic netlink layer | |
103 | * | |
104 | * The WiMAX stack will call this function when a message was received | |
105 | * from user space. | |
106 | * | |
107 | * For the i2400m, this is an L3L4 message, as specified in | |
108 | * include/linux/wimax/i2400m.h, and thus prefixed with a 'struct | |
109 | * i2400m_l3l4_hdr'. Driver (and device) expect the messages to be | |
110 | * coded in Little Endian. | |
111 | * | |
112 | * This function just verifies that the header declaration and the | |
113 | * payload are consistent and then deals with it, either forwarding it | |
114 | * to the device or procesing it locally. | |
115 | * | |
116 | * In the i2400m, messages are basically commands that will carry an | |
117 | * ack, so we use i2400m_msg_to_dev() and then deliver the ack back to | |
118 | * user space. The rx.c code might intercept the response and use it | |
119 | * to update the driver's state, but then it will pass it on so it can | |
120 | * be relayed back to user space. | |
121 | * | |
122 | * Note that asynchronous events from the device are processed and | |
123 | * sent to user space in rx.c. | |
124 | */ | |
125 | static | |
126 | int i2400m_op_msg_from_user(struct wimax_dev *wimax_dev, | |
127 | const char *pipe_name, | |
128 | const void *msg_buf, size_t msg_len, | |
129 | const struct genl_info *genl_info) | |
130 | { | |
131 | int result; | |
132 | struct i2400m *i2400m = wimax_dev_to_i2400m(wimax_dev); | |
133 | struct device *dev = i2400m_dev(i2400m); | |
134 | struct sk_buff *ack_skb; | |
135 | ||
136 | d_fnstart(4, dev, "(wimax_dev %p [i2400m %p] msg_buf %p " | |
137 | "msg_len %zu genl_info %p)\n", wimax_dev, i2400m, | |
138 | msg_buf, msg_len, genl_info); | |
139 | ack_skb = i2400m_msg_to_dev(i2400m, msg_buf, msg_len); | |
140 | result = PTR_ERR(ack_skb); | |
141 | if (IS_ERR(ack_skb)) | |
142 | goto error_msg_to_dev; | |
024f7f31 IPG |
143 | result = wimax_msg_send(&i2400m->wimax_dev, ack_skb); |
144 | error_msg_to_dev: | |
145 | d_fnend(4, dev, "(wimax_dev %p [i2400m %p] msg_buf %p msg_len %zu " | |
146 | "genl_info %p) = %d\n", wimax_dev, i2400m, msg_buf, msg_len, | |
147 | genl_info, result); | |
148 | return result; | |
149 | } | |
150 | ||
151 | ||
152 | /* | |
153 | * Context to wait for a reset to finalize | |
154 | */ | |
155 | struct i2400m_reset_ctx { | |
156 | struct completion completion; | |
157 | int result; | |
158 | }; | |
159 | ||
160 | ||
161 | /* | |
162 | * WiMAX stack operation: reset a device | |
163 | * | |
164 | * @wimax_dev: device descriptor | |
165 | * | |
166 | * See the documentation for wimax_reset() and wimax_dev->op_reset for | |
167 | * the requirements of this function. The WiMAX stack guarantees | |
168 | * serialization on calls to this function. | |
169 | * | |
170 | * Do a warm reset on the device; if it fails, resort to a cold reset | |
171 | * and return -ENODEV. On successful warm reset, we need to block | |
172 | * until it is complete. | |
173 | * | |
174 | * The bus-driver implementation of reset takes care of falling back | |
175 | * to cold reset if warm fails. | |
176 | */ | |
177 | static | |
178 | int i2400m_op_reset(struct wimax_dev *wimax_dev) | |
179 | { | |
180 | int result; | |
181 | struct i2400m *i2400m = wimax_dev_to_i2400m(wimax_dev); | |
182 | struct device *dev = i2400m_dev(i2400m); | |
183 | struct i2400m_reset_ctx ctx = { | |
184 | .completion = COMPLETION_INITIALIZER_ONSTACK(ctx.completion), | |
185 | .result = 0, | |
186 | }; | |
187 | ||
188 | d_fnstart(4, dev, "(wimax_dev %p)\n", wimax_dev); | |
189 | mutex_lock(&i2400m->init_mutex); | |
190 | i2400m->reset_ctx = &ctx; | |
191 | mutex_unlock(&i2400m->init_mutex); | |
c931ceeb | 192 | result = i2400m_reset(i2400m, I2400M_RT_WARM); |
024f7f31 IPG |
193 | if (result < 0) |
194 | goto out; | |
195 | result = wait_for_completion_timeout(&ctx.completion, 4*HZ); | |
196 | if (result == 0) | |
197 | result = -ETIMEDOUT; | |
198 | else if (result > 0) | |
199 | result = ctx.result; | |
200 | /* if result < 0, pass it on */ | |
201 | mutex_lock(&i2400m->init_mutex); | |
202 | i2400m->reset_ctx = NULL; | |
203 | mutex_unlock(&i2400m->init_mutex); | |
204 | out: | |
205 | d_fnend(4, dev, "(wimax_dev %p) = %d\n", wimax_dev, result); | |
206 | return result; | |
207 | } | |
208 | ||
209 | ||
210 | /* | |
211 | * Check the MAC address we got from boot mode is ok | |
212 | * | |
213 | * @i2400m: device descriptor | |
214 | * | |
215 | * Returns: 0 if ok, < 0 errno code on error. | |
216 | */ | |
217 | static | |
218 | int i2400m_check_mac_addr(struct i2400m *i2400m) | |
219 | { | |
220 | int result; | |
221 | struct device *dev = i2400m_dev(i2400m); | |
222 | struct sk_buff *skb; | |
223 | const struct i2400m_tlv_detailed_device_info *ddi; | |
224 | struct net_device *net_dev = i2400m->wimax_dev.net_dev; | |
225 | const unsigned char zeromac[ETH_ALEN] = { 0 }; | |
226 | ||
227 | d_fnstart(3, dev, "(i2400m %p)\n", i2400m); | |
228 | skb = i2400m_get_device_info(i2400m); | |
229 | if (IS_ERR(skb)) { | |
230 | result = PTR_ERR(skb); | |
231 | dev_err(dev, "Cannot verify MAC address, error reading: %d\n", | |
232 | result); | |
233 | goto error; | |
234 | } | |
b595076a | 235 | /* Extract MAC address */ |
024f7f31 IPG |
236 | ddi = (void *) skb->data; |
237 | BUILD_BUG_ON(ETH_ALEN != sizeof(ddi->mac_address)); | |
4754b3de | 238 | d_printf(2, dev, "GET DEVICE INFO: mac addr %pM\n", |
239 | ddi->mac_address); | |
024f7f31 IPG |
240 | if (!memcmp(net_dev->perm_addr, ddi->mac_address, |
241 | sizeof(ddi->mac_address))) | |
242 | goto ok; | |
243 | dev_warn(dev, "warning: device reports a different MAC address " | |
244 | "to that of boot mode's\n"); | |
4754b3de | 245 | dev_warn(dev, "device reports %pM\n", ddi->mac_address); |
246 | dev_warn(dev, "boot mode reported %pM\n", net_dev->perm_addr); | |
024f7f31 IPG |
247 | if (!memcmp(zeromac, ddi->mac_address, sizeof(zeromac))) |
248 | dev_err(dev, "device reports an invalid MAC address, " | |
249 | "not updating\n"); | |
250 | else { | |
251 | dev_warn(dev, "updating MAC address\n"); | |
252 | net_dev->addr_len = ETH_ALEN; | |
253 | memcpy(net_dev->perm_addr, ddi->mac_address, ETH_ALEN); | |
254 | memcpy(net_dev->dev_addr, ddi->mac_address, ETH_ALEN); | |
255 | } | |
256 | ok: | |
257 | result = 0; | |
258 | kfree_skb(skb); | |
259 | error: | |
260 | d_fnend(3, dev, "(i2400m %p) = %d\n", i2400m, result); | |
261 | return result; | |
262 | } | |
263 | ||
264 | ||
265 | /** | |
266 | * __i2400m_dev_start - Bring up driver communication with the device | |
267 | * | |
268 | * @i2400m: device descriptor | |
269 | * @flags: boot mode flags | |
270 | * | |
271 | * Returns: 0 if ok, < 0 errno code on error. | |
272 | * | |
273 | * Uploads firmware and brings up all the resources needed to be able | |
274 | * to communicate with the device. | |
275 | * | |
e9a6b45b IPG |
276 | * The workqueue has to be setup early, at least before RX handling |
277 | * (it's only real user for now) so it can process reports as they | |
278 | * arrive. We also want to destroy it if we retry, to make sure it is | |
279 | * flushed...easier like this. | |
280 | * | |
024f7f31 IPG |
281 | * TX needs to be setup before the bus-specific code (otherwise on |
282 | * shutdown, the bus-tx code could try to access it). | |
283 | */ | |
284 | static | |
285 | int __i2400m_dev_start(struct i2400m *i2400m, enum i2400m_bri flags) | |
286 | { | |
287 | int result; | |
288 | struct wimax_dev *wimax_dev = &i2400m->wimax_dev; | |
289 | struct net_device *net_dev = wimax_dev->net_dev; | |
290 | struct device *dev = i2400m_dev(i2400m); | |
ecddfd5e | 291 | int times = i2400m->bus_bm_retries; |
024f7f31 IPG |
292 | |
293 | d_fnstart(3, dev, "(i2400m %p)\n", i2400m); | |
294 | retry: | |
295 | result = i2400m_dev_bootstrap(i2400m, flags); | |
296 | if (result < 0) { | |
297 | dev_err(dev, "cannot bootstrap device: %d\n", result); | |
298 | goto error_bootstrap; | |
299 | } | |
300 | result = i2400m_tx_setup(i2400m); | |
301 | if (result < 0) | |
302 | goto error_tx_setup; | |
c747583d IPG |
303 | result = i2400m_rx_setup(i2400m); |
304 | if (result < 0) | |
305 | goto error_rx_setup; | |
024f7f31 IPG |
306 | i2400m->work_queue = create_singlethread_workqueue(wimax_dev->name); |
307 | if (i2400m->work_queue == NULL) { | |
308 | result = -ENOMEM; | |
309 | dev_err(dev, "cannot create workqueue\n"); | |
310 | goto error_create_workqueue; | |
311 | } | |
097acbef IPG |
312 | if (i2400m->bus_dev_start) { |
313 | result = i2400m->bus_dev_start(i2400m); | |
314 | if (result < 0) | |
315 | goto error_bus_dev_start; | |
316 | } | |
c2315b4e IPG |
317 | i2400m->ready = 1; |
318 | wmb(); /* see i2400m->ready's documentation */ | |
a0beba21 IPG |
319 | /* process pending reports from the device */ |
320 | queue_work(i2400m->work_queue, &i2400m->rx_report_ws); | |
6a0f7ab8 IPG |
321 | result = i2400m_firmware_check(i2400m); /* fw versions ok? */ |
322 | if (result < 0) | |
323 | goto error_fw_check; | |
024f7f31 IPG |
324 | /* At this point is ok to send commands to the device */ |
325 | result = i2400m_check_mac_addr(i2400m); | |
326 | if (result < 0) | |
327 | goto error_check_mac_addr; | |
024f7f31 IPG |
328 | result = i2400m_dev_initialize(i2400m); |
329 | if (result < 0) | |
330 | goto error_dev_initialize; | |
599e5953 CK |
331 | |
332 | /* We don't want any additional unwanted error recovery triggered | |
333 | * from any other context so if anything went wrong before we come | |
334 | * here, let's keep i2400m->error_recovery untouched and leave it to | |
335 | * dev_reset_handle(). See dev_reset_handle(). */ | |
336 | ||
337 | atomic_dec(&i2400m->error_recovery); | |
338 | /* Every thing works so far, ok, now we are ready to | |
339 | * take error recovery if it's required. */ | |
340 | ||
024f7f31 IPG |
341 | /* At this point, reports will come for the device and set it |
342 | * to the right state if it is different than UNINITIALIZED */ | |
343 | d_fnend(3, dev, "(net_dev %p [i2400m %p]) = %d\n", | |
344 | net_dev, i2400m, result); | |
345 | return result; | |
346 | ||
347 | error_dev_initialize: | |
348 | error_check_mac_addr: | |
49d72df3 | 349 | error_fw_check: |
c2315b4e IPG |
350 | i2400m->ready = 0; |
351 | wmb(); /* see i2400m->ready's documentation */ | |
352 | flush_workqueue(i2400m->work_queue); | |
097acbef IPG |
353 | if (i2400m->bus_dev_stop) |
354 | i2400m->bus_dev_stop(i2400m); | |
024f7f31 | 355 | error_bus_dev_start: |
e9a6b45b IPG |
356 | destroy_workqueue(i2400m->work_queue); |
357 | error_create_workqueue: | |
c747583d IPG |
358 | i2400m_rx_release(i2400m); |
359 | error_rx_setup: | |
024f7f31 IPG |
360 | i2400m_tx_release(i2400m); |
361 | error_tx_setup: | |
362 | error_bootstrap: | |
0bcfc5ef | 363 | if (result == -EL3RST && times-- > 0) { |
8b5b30ee | 364 | flags = I2400M_BRI_SOFT|I2400M_BRI_MAC_REINIT; |
024f7f31 IPG |
365 | goto retry; |
366 | } | |
367 | d_fnend(3, dev, "(net_dev %p [i2400m %p]) = %d\n", | |
368 | net_dev, i2400m, result); | |
369 | return result; | |
370 | } | |
371 | ||
372 | ||
373 | static | |
374 | int i2400m_dev_start(struct i2400m *i2400m, enum i2400m_bri bm_flags) | |
375 | { | |
c2315b4e | 376 | int result = 0; |
024f7f31 | 377 | mutex_lock(&i2400m->init_mutex); /* Well, start the device */ |
c2315b4e IPG |
378 | if (i2400m->updown == 0) { |
379 | result = __i2400m_dev_start(i2400m, bm_flags); | |
380 | if (result >= 0) { | |
381 | i2400m->updown = 1; | |
f4e41345 CK |
382 | i2400m->alive = 1; |
383 | wmb();/* see i2400m->updown and i2400m->alive's doc */ | |
c2315b4e IPG |
384 | } |
385 | } | |
024f7f31 IPG |
386 | mutex_unlock(&i2400m->init_mutex); |
387 | return result; | |
388 | } | |
389 | ||
390 | ||
391 | /** | |
392 | * i2400m_dev_stop - Tear down driver communication with the device | |
393 | * | |
394 | * @i2400m: device descriptor | |
395 | * | |
396 | * Returns: 0 if ok, < 0 errno code on error. | |
397 | * | |
e9a6b45b IPG |
398 | * Releases all the resources allocated to communicate with the |
399 | * device. Note we cannot destroy the workqueue earlier as until RX is | |
400 | * fully destroyed, it could still try to schedule jobs. | |
024f7f31 IPG |
401 | */ |
402 | static | |
403 | void __i2400m_dev_stop(struct i2400m *i2400m) | |
404 | { | |
405 | struct wimax_dev *wimax_dev = &i2400m->wimax_dev; | |
406 | struct device *dev = i2400m_dev(i2400m); | |
407 | ||
408 | d_fnstart(3, dev, "(i2400m %p)\n", i2400m); | |
409 | wimax_state_change(wimax_dev, __WIMAX_ST_QUIESCING); | |
5eeae35b IPG |
410 | i2400m_msg_to_dev_cancel_wait(i2400m, -EL3RST); |
411 | complete(&i2400m->msg_completion); | |
ac53aed9 | 412 | i2400m_net_wake_stop(i2400m); |
024f7f31 | 413 | i2400m_dev_shutdown(i2400m); |
c2315b4e IPG |
414 | /* |
415 | * Make sure no report hooks are running *before* we stop the | |
416 | * communication infrastructure with the device. | |
417 | */ | |
418 | i2400m->ready = 0; /* nobody can queue work anymore */ | |
419 | wmb(); /* see i2400m->ready's documentation */ | |
420 | flush_workqueue(i2400m->work_queue); | |
421 | ||
097acbef IPG |
422 | if (i2400m->bus_dev_stop) |
423 | i2400m->bus_dev_stop(i2400m); | |
e9a6b45b | 424 | destroy_workqueue(i2400m->work_queue); |
c747583d | 425 | i2400m_rx_release(i2400m); |
024f7f31 IPG |
426 | i2400m_tx_release(i2400m); |
427 | wimax_state_change(wimax_dev, WIMAX_ST_DOWN); | |
428 | d_fnend(3, dev, "(i2400m %p) = 0\n", i2400m); | |
429 | } | |
430 | ||
431 | ||
432 | /* | |
433 | * Watch out -- we only need to stop if there is a need for it. The | |
434 | * device could have reset itself and failed to come up again (see | |
435 | * _i2400m_dev_reset_handle()). | |
436 | */ | |
437 | static | |
438 | void i2400m_dev_stop(struct i2400m *i2400m) | |
439 | { | |
440 | mutex_lock(&i2400m->init_mutex); | |
441 | if (i2400m->updown) { | |
442 | __i2400m_dev_stop(i2400m); | |
443 | i2400m->updown = 0; | |
f4e41345 CK |
444 | i2400m->alive = 0; |
445 | wmb(); /* see i2400m->updown and i2400m->alive's doc */ | |
024f7f31 IPG |
446 | } |
447 | mutex_unlock(&i2400m->init_mutex); | |
448 | } | |
449 | ||
450 | ||
7b43ca70 IPG |
451 | /* |
452 | * Listen to PM events to cache the firmware before suspend/hibernation | |
453 | * | |
454 | * When the device comes out of suspend, it might go into reset and | |
455 | * firmware has to be uploaded again. At resume, most of the times, we | |
456 | * can't load firmware images from disk, so we need to cache it. | |
457 | * | |
458 | * i2400m_fw_cache() will allocate a kobject and attach the firmware | |
459 | * to it; that way we don't have to worry too much about the fw loader | |
460 | * hitting a race condition. | |
461 | * | |
462 | * Note: modus operandi stolen from the Orinoco driver; thx. | |
463 | */ | |
464 | static | |
465 | int i2400m_pm_notifier(struct notifier_block *notifier, | |
466 | unsigned long pm_event, | |
467 | void *unused) | |
468 | { | |
469 | struct i2400m *i2400m = | |
470 | container_of(notifier, struct i2400m, pm_notifier); | |
471 | struct device *dev = i2400m_dev(i2400m); | |
472 | ||
473 | d_fnstart(3, dev, "(i2400m %p pm_event %lx)\n", i2400m, pm_event); | |
474 | switch (pm_event) { | |
475 | case PM_HIBERNATION_PREPARE: | |
476 | case PM_SUSPEND_PREPARE: | |
477 | i2400m_fw_cache(i2400m); | |
478 | break; | |
479 | case PM_POST_RESTORE: | |
480 | /* Restore from hibernation failed. We need to clean | |
481 | * up in exactly the same way, so fall through. */ | |
482 | case PM_POST_HIBERNATION: | |
483 | case PM_POST_SUSPEND: | |
484 | i2400m_fw_uncache(i2400m); | |
485 | break; | |
486 | ||
487 | case PM_RESTORE_PREPARE: | |
488 | default: | |
489 | break; | |
490 | } | |
491 | d_fnend(3, dev, "(i2400m %p pm_event %lx) = void\n", i2400m, pm_event); | |
492 | return NOTIFY_DONE; | |
493 | } | |
494 | ||
495 | ||
3725d8c9 IPG |
496 | /* |
497 | * pre-reset is called before a device is going on reset | |
498 | * | |
499 | * This has to be followed by a call to i2400m_post_reset(), otherwise | |
500 | * bad things might happen. | |
501 | */ | |
502 | int i2400m_pre_reset(struct i2400m *i2400m) | |
503 | { | |
504 | int result; | |
505 | struct device *dev = i2400m_dev(i2400m); | |
506 | ||
507 | d_fnstart(3, dev, "(i2400m %p)\n", i2400m); | |
508 | d_printf(1, dev, "pre-reset shut down\n"); | |
509 | ||
510 | result = 0; | |
511 | mutex_lock(&i2400m->init_mutex); | |
512 | if (i2400m->updown) { | |
513 | netif_tx_disable(i2400m->wimax_dev.net_dev); | |
514 | __i2400m_dev_stop(i2400m); | |
515 | result = 0; | |
516 | /* down't set updown to zero -- this way | |
517 | * post_reset can restore properly */ | |
518 | } | |
519 | mutex_unlock(&i2400m->init_mutex); | |
520 | if (i2400m->bus_release) | |
521 | i2400m->bus_release(i2400m); | |
522 | d_fnend(3, dev, "(i2400m %p) = %d\n", i2400m, result); | |
523 | return result; | |
524 | } | |
525 | EXPORT_SYMBOL_GPL(i2400m_pre_reset); | |
526 | ||
527 | ||
528 | /* | |
529 | * Restore device state after a reset | |
530 | * | |
531 | * Do the work needed after a device reset to bring it up to the same | |
532 | * state as it was before the reset. | |
533 | * | |
534 | * NOTE: this requires i2400m->init_mutex taken | |
535 | */ | |
536 | int i2400m_post_reset(struct i2400m *i2400m) | |
537 | { | |
538 | int result = 0; | |
539 | struct device *dev = i2400m_dev(i2400m); | |
540 | ||
541 | d_fnstart(3, dev, "(i2400m %p)\n", i2400m); | |
542 | d_printf(1, dev, "post-reset start\n"); | |
543 | if (i2400m->bus_setup) { | |
544 | result = i2400m->bus_setup(i2400m); | |
545 | if (result < 0) { | |
546 | dev_err(dev, "bus-specific setup failed: %d\n", | |
547 | result); | |
548 | goto error_bus_setup; | |
549 | } | |
550 | } | |
551 | mutex_lock(&i2400m->init_mutex); | |
552 | if (i2400m->updown) { | |
553 | result = __i2400m_dev_start( | |
554 | i2400m, I2400M_BRI_SOFT | I2400M_BRI_MAC_REINIT); | |
555 | if (result < 0) | |
556 | goto error_dev_start; | |
557 | } | |
558 | mutex_unlock(&i2400m->init_mutex); | |
559 | d_fnend(3, dev, "(i2400m %p) = %d\n", i2400m, result); | |
560 | return result; | |
561 | ||
562 | error_dev_start: | |
563 | if (i2400m->bus_release) | |
564 | i2400m->bus_release(i2400m); | |
3725d8c9 IPG |
565 | /* even if the device was up, it could not be recovered, so we |
566 | * mark it as down. */ | |
567 | i2400m->updown = 0; | |
568 | wmb(); /* see i2400m->updown's documentation */ | |
569 | mutex_unlock(&i2400m->init_mutex); | |
2354161d | 570 | error_bus_setup: |
3725d8c9 IPG |
571 | d_fnend(3, dev, "(i2400m %p) = %d\n", i2400m, result); |
572 | return result; | |
573 | } | |
574 | EXPORT_SYMBOL_GPL(i2400m_post_reset); | |
575 | ||
576 | ||
024f7f31 IPG |
577 | /* |
578 | * The device has rebooted; fix up the device and the driver | |
579 | * | |
580 | * Tear down the driver communication with the device, reload the | |
581 | * firmware and reinitialize the communication with the device. | |
582 | * | |
583 | * If someone calls a reset when the device's firmware is down, in | |
584 | * theory we won't see it because we are not listening. However, just | |
585 | * in case, leave the code to handle it. | |
586 | * | |
587 | * If there is a reset context, use it; this means someone is waiting | |
588 | * for us to tell him when the reset operation is complete and the | |
589 | * device is ready to rock again. | |
590 | * | |
591 | * NOTE: if we are in the process of bringing up or down the | |
592 | * communication with the device [running i2400m_dev_start() or | |
593 | * _stop()], don't do anything, let it fail and handle it. | |
594 | * | |
595 | * This function is ran always in a thread context | |
3ef6129e IPG |
596 | * |
597 | * This function gets passed, as payload to i2400m_work() a 'const | |
598 | * char *' ptr with a "reason" why the reset happened (for messages). | |
024f7f31 IPG |
599 | */ |
600 | static | |
601 | void __i2400m_dev_reset_handle(struct work_struct *ws) | |
602 | { | |
781ba456 TH |
603 | struct i2400m *i2400m = container_of(ws, struct i2400m, reset_ws); |
604 | const char *reason = i2400m->reset_reason; | |
024f7f31 | 605 | struct device *dev = i2400m_dev(i2400m); |
024f7f31 | 606 | struct i2400m_reset_ctx *ctx = i2400m->reset_ctx; |
781ba456 | 607 | int result; |
3ef6129e IPG |
608 | |
609 | d_fnstart(3, dev, "(ws %p i2400m %p reason %s)\n", ws, i2400m, reason); | |
610 | ||
f4e41345 CK |
611 | i2400m->boot_mode = 1; |
612 | wmb(); /* Make sure i2400m_msg_to_dev() sees boot_mode */ | |
613 | ||
024f7f31 IPG |
614 | result = 0; |
615 | if (mutex_trylock(&i2400m->init_mutex) == 0) { | |
616 | /* We are still in i2400m_dev_start() [let it fail] or | |
617 | * i2400m_dev_stop() [we are shutting down anyway, so | |
618 | * ignore it] or we are resetting somewhere else. */ | |
c2315b4e | 619 | dev_err(dev, "device rebooted somewhere else?\n"); |
0bcfc5ef | 620 | i2400m_msg_to_dev_cancel_wait(i2400m, -EL3RST); |
024f7f31 IPG |
621 | complete(&i2400m->msg_completion); |
622 | goto out; | |
623 | } | |
f4e41345 | 624 | |
3ef6129e | 625 | dev_err(dev, "%s: reinitializing driver\n", reason); |
f4e41345 CK |
626 | rmb(); |
627 | if (i2400m->updown) { | |
628 | __i2400m_dev_stop(i2400m); | |
c2315b4e IPG |
629 | i2400m->updown = 0; |
630 | wmb(); /* see i2400m->updown's documentation */ | |
c2315b4e | 631 | } |
f4e41345 CK |
632 | |
633 | if (i2400m->alive) { | |
634 | result = __i2400m_dev_start(i2400m, | |
635 | I2400M_BRI_SOFT | I2400M_BRI_MAC_REINIT); | |
636 | if (result < 0) { | |
637 | dev_err(dev, "%s: cannot start the device: %d\n", | |
638 | reason, result); | |
639 | result = -EUCLEAN; | |
640 | if (atomic_read(&i2400m->bus_reset_retries) | |
641 | >= I2400M_BUS_RESET_RETRIES) { | |
642 | result = -ENODEV; | |
643 | dev_err(dev, "tried too many times to " | |
644 | "reset the device, giving up\n"); | |
645 | } | |
646 | } | |
647 | } | |
648 | ||
024f7f31 IPG |
649 | if (i2400m->reset_ctx) { |
650 | ctx->result = result; | |
651 | complete(&ctx->completion); | |
652 | } | |
653 | mutex_unlock(&i2400m->init_mutex); | |
b9ee9501 | 654 | if (result == -EUCLEAN) { |
f4e41345 CK |
655 | /* |
656 | * We come here because the reset during operational mode | |
25985edc | 657 | * wasn't successfully done and need to proceed to a bus |
f4e41345 CK |
658 | * reset. For the dev_reset_handle() to be able to handle |
659 | * the reset event later properly, we restore boot_mode back | |
660 | * to the state before previous reset. ie: just like we are | |
661 | * issuing the bus reset for the first time | |
662 | */ | |
663 | i2400m->boot_mode = 0; | |
664 | wmb(); | |
665 | ||
666 | atomic_inc(&i2400m->bus_reset_retries); | |
b9ee9501 | 667 | /* ops, need to clean up [w/ init_mutex not held] */ |
c931ceeb | 668 | result = i2400m_reset(i2400m, I2400M_RT_BUS); |
b9ee9501 IPG |
669 | if (result >= 0) |
670 | result = -ENODEV; | |
f4e41345 CK |
671 | } else { |
672 | rmb(); | |
673 | if (i2400m->alive) { | |
674 | /* great, we expect the device state up and | |
675 | * dev_start() actually brings the device state up */ | |
676 | i2400m->updown = 1; | |
677 | wmb(); | |
678 | atomic_set(&i2400m->bus_reset_retries, 0); | |
679 | } | |
b9ee9501 | 680 | } |
024f7f31 | 681 | out: |
3ef6129e IPG |
682 | d_fnend(3, dev, "(ws %p i2400m %p reason %s) = void\n", |
683 | ws, i2400m, reason); | |
024f7f31 IPG |
684 | } |
685 | ||
686 | ||
687 | /** | |
688 | * i2400m_dev_reset_handle - Handle a device's reset in a thread context | |
689 | * | |
690 | * Schedule a device reset handling out on a thread context, so it | |
691 | * is safe to call from atomic context. We can't use the i2400m's | |
692 | * queue as we are going to destroy it and reinitialize it as part of | |
693 | * the driver bringup/bringup process. | |
694 | * | |
695 | * See __i2400m_dev_reset_handle() for details; that takes care of | |
696 | * reinitializing the driver to handle the reset, calling into the | |
697 | * bus-specific functions ops as needed. | |
698 | */ | |
3ef6129e | 699 | int i2400m_dev_reset_handle(struct i2400m *i2400m, const char *reason) |
024f7f31 | 700 | { |
781ba456 TH |
701 | i2400m->reset_reason = reason; |
702 | return schedule_work(&i2400m->reset_ws); | |
024f7f31 IPG |
703 | } |
704 | EXPORT_SYMBOL_GPL(i2400m_dev_reset_handle); | |
705 | ||
706 | ||
599e5953 CK |
707 | /* |
708 | * The actual work of error recovery. | |
709 | * | |
710 | * The current implementation of error recovery is to trigger a bus reset. | |
711 | */ | |
712 | static | |
713 | void __i2400m_error_recovery(struct work_struct *ws) | |
714 | { | |
781ba456 | 715 | struct i2400m *i2400m = container_of(ws, struct i2400m, recovery_ws); |
599e5953 CK |
716 | |
717 | i2400m_reset(i2400m, I2400M_RT_BUS); | |
599e5953 CK |
718 | } |
719 | ||
720 | /* | |
721 | * Schedule a work struct for error recovery. | |
722 | * | |
723 | * The intention of error recovery is to bring back the device to some | |
724 | * known state whenever TX sees -110 (-ETIMEOUT) on copying the data to | |
725 | * the device. The TX failure could mean a device bus stuck, so the current | |
726 | * error recovery implementation is to trigger a bus reset to the device | |
727 | * and hopefully it can bring back the device. | |
728 | * | |
729 | * The actual work of error recovery has to be in a thread context because | |
730 | * it is kicked off in the TX thread (i2400ms->tx_workqueue) which is to be | |
731 | * destroyed by the error recovery mechanism (currently a bus reset). | |
732 | * | |
733 | * Also, there may be already a queue of TX works that all hit | |
734 | * the -ETIMEOUT error condition because the device is stuck already. | |
735 | * Since bus reset is used as the error recovery mechanism and we don't | |
736 | * want consecutive bus resets simply because the multiple TX works | |
737 | * in the queue all hit the same device erratum, the flag "error_recovery" | |
738 | * is introduced for preventing unwanted consecutive bus resets. | |
739 | * | |
740 | * Error recovery shall only be invoked again if previous one was completed. | |
741 | * The flag error_recovery is set when error recovery mechanism is scheduled, | |
742 | * and is checked when we need to schedule another error recovery. If it is | |
743 | * in place already, then we shouldn't schedule another one. | |
744 | */ | |
745 | void i2400m_error_recovery(struct i2400m *i2400m) | |
746 | { | |
781ba456 TH |
747 | if (atomic_add_return(1, &i2400m->error_recovery) == 1) |
748 | schedule_work(&i2400m->recovery_ws); | |
749 | else | |
599e5953 | 750 | atomic_dec(&i2400m->error_recovery); |
599e5953 CK |
751 | } |
752 | EXPORT_SYMBOL_GPL(i2400m_error_recovery); | |
753 | ||
2869da85 IPG |
754 | /* |
755 | * Alloc the command and ack buffers for boot mode | |
a134fd6b DB |
756 | * |
757 | * Get the buffers needed to deal with boot mode messages. These | |
25985edc | 758 | * buffers need to be allocated before the sdio receive irq is setup. |
a134fd6b | 759 | */ |
2869da85 | 760 | static |
a134fd6b DB |
761 | int i2400m_bm_buf_alloc(struct i2400m *i2400m) |
762 | { | |
763 | int result; | |
764 | ||
765 | result = -ENOMEM; | |
766 | i2400m->bm_cmd_buf = kzalloc(I2400M_BM_CMD_BUF_SIZE, GFP_KERNEL); | |
767 | if (i2400m->bm_cmd_buf == NULL) | |
768 | goto error_bm_cmd_kzalloc; | |
769 | i2400m->bm_ack_buf = kzalloc(I2400M_BM_ACK_BUF_SIZE, GFP_KERNEL); | |
770 | if (i2400m->bm_ack_buf == NULL) | |
771 | goto error_bm_ack_buf_kzalloc; | |
772 | return 0; | |
773 | ||
774 | error_bm_ack_buf_kzalloc: | |
775 | kfree(i2400m->bm_cmd_buf); | |
776 | error_bm_cmd_kzalloc: | |
777 | return result; | |
778 | } | |
a134fd6b | 779 | |
2869da85 IPG |
780 | |
781 | /* | |
782 | * Free boot mode command and ack buffers. | |
a134fd6b | 783 | */ |
2869da85 | 784 | static |
a134fd6b DB |
785 | void i2400m_bm_buf_free(struct i2400m *i2400m) |
786 | { | |
787 | kfree(i2400m->bm_ack_buf); | |
788 | kfree(i2400m->bm_cmd_buf); | |
a134fd6b | 789 | } |
2869da85 IPG |
790 | |
791 | ||
af77dfa7 IPG |
792 | /** |
793 | * i2400m_init - Initialize a 'struct i2400m' from all zeroes | |
794 | * | |
795 | * This is a bus-generic API call. | |
796 | */ | |
797 | void i2400m_init(struct i2400m *i2400m) | |
798 | { | |
799 | wimax_dev_init(&i2400m->wimax_dev); | |
800 | ||
801 | i2400m->boot_mode = 1; | |
802 | i2400m->rx_reorder = 1; | |
803 | init_waitqueue_head(&i2400m->state_wq); | |
804 | ||
805 | spin_lock_init(&i2400m->tx_lock); | |
806 | i2400m->tx_pl_min = UINT_MAX; | |
807 | i2400m->tx_size_min = UINT_MAX; | |
808 | ||
809 | spin_lock_init(&i2400m->rx_lock); | |
810 | i2400m->rx_pl_min = UINT_MAX; | |
811 | i2400m->rx_size_min = UINT_MAX; | |
a0beba21 IPG |
812 | INIT_LIST_HEAD(&i2400m->rx_reports); |
813 | INIT_WORK(&i2400m->rx_report_ws, i2400m_report_hook_work); | |
af77dfa7 IPG |
814 | |
815 | mutex_init(&i2400m->msg_mutex); | |
816 | init_completion(&i2400m->msg_completion); | |
817 | ||
818 | mutex_init(&i2400m->init_mutex); | |
819 | /* wake_tx_ws is initialized in i2400m_tx_setup() */ | |
781ba456 TH |
820 | |
821 | INIT_WORK(&i2400m->reset_ws, __i2400m_dev_reset_handle); | |
822 | INIT_WORK(&i2400m->recovery_ws, __i2400m_error_recovery); | |
823 | ||
f4e41345 CK |
824 | atomic_set(&i2400m->bus_reset_retries, 0); |
825 | ||
826 | i2400m->alive = 0; | |
599e5953 CK |
827 | |
828 | /* initialize error_recovery to 1 for denoting we | |
829 | * are not yet ready to take any error recovery */ | |
830 | atomic_set(&i2400m->error_recovery, 1); | |
af77dfa7 IPG |
831 | } |
832 | EXPORT_SYMBOL_GPL(i2400m_init); | |
833 | ||
834 | ||
c931ceeb IPG |
835 | int i2400m_reset(struct i2400m *i2400m, enum i2400m_reset_type rt) |
836 | { | |
837 | struct net_device *net_dev = i2400m->wimax_dev.net_dev; | |
838 | ||
839 | /* | |
840 | * Make sure we stop TXs and down the carrier before | |
841 | * resetting; this is needed to avoid things like | |
842 | * i2400m_wake_tx() scheduling stuff in parallel. | |
843 | */ | |
844 | if (net_dev->reg_state == NETREG_REGISTERED) { | |
845 | netif_tx_disable(net_dev); | |
846 | netif_carrier_off(net_dev); | |
847 | } | |
848 | return i2400m->bus_reset(i2400m, rt); | |
849 | } | |
850 | EXPORT_SYMBOL_GPL(i2400m_reset); | |
851 | ||
852 | ||
024f7f31 IPG |
853 | /** |
854 | * i2400m_setup - bus-generic setup function for the i2400m device | |
855 | * | |
856 | * @i2400m: device descriptor (bus-specific parts have been initialized) | |
857 | * | |
858 | * Returns: 0 if ok, < 0 errno code on error. | |
859 | * | |
8f90f3ee IPG |
860 | * Sets up basic device comunication infrastructure, boots the ROM to |
861 | * read the MAC address, registers with the WiMAX and network stacks | |
862 | * and then brings up the device. | |
024f7f31 IPG |
863 | */ |
864 | int i2400m_setup(struct i2400m *i2400m, enum i2400m_bri bm_flags) | |
865 | { | |
866 | int result = -ENODEV; | |
867 | struct device *dev = i2400m_dev(i2400m); | |
868 | struct wimax_dev *wimax_dev = &i2400m->wimax_dev; | |
869 | struct net_device *net_dev = i2400m->wimax_dev.net_dev; | |
870 | ||
871 | d_fnstart(3, dev, "(i2400m %p)\n", i2400m); | |
872 | ||
873 | snprintf(wimax_dev->name, sizeof(wimax_dev->name), | |
347707ba | 874 | "i2400m-%s:%s", dev->bus->name, dev_name(dev)); |
024f7f31 | 875 | |
2869da85 IPG |
876 | result = i2400m_bm_buf_alloc(i2400m); |
877 | if (result < 0) { | |
878 | dev_err(dev, "cannot allocate bootmode scratch buffers\n"); | |
879 | goto error_bm_buf_alloc; | |
880 | } | |
881 | ||
0856ccf2 IPG |
882 | if (i2400m->bus_setup) { |
883 | result = i2400m->bus_setup(i2400m); | |
884 | if (result < 0) { | |
885 | dev_err(dev, "bus-specific setup failed: %d\n", | |
886 | result); | |
887 | goto error_bus_setup; | |
888 | } | |
889 | } | |
890 | ||
024f7f31 IPG |
891 | result = i2400m_bootrom_init(i2400m, bm_flags); |
892 | if (result < 0) { | |
893 | dev_err(dev, "read mac addr: bootrom init " | |
894 | "failed: %d\n", result); | |
895 | goto error_bootrom_init; | |
896 | } | |
897 | result = i2400m_read_mac_addr(i2400m); | |
898 | if (result < 0) | |
899 | goto error_read_mac_addr; | |
fe442683 | 900 | random_ether_addr(i2400m->src_mac_addr); |
024f7f31 | 901 | |
7b43ca70 IPG |
902 | i2400m->pm_notifier.notifier_call = i2400m_pm_notifier; |
903 | register_pm_notifier(&i2400m->pm_notifier); | |
904 | ||
024f7f31 IPG |
905 | result = register_netdev(net_dev); /* Okey dokey, bring it up */ |
906 | if (result < 0) { | |
907 | dev_err(dev, "cannot register i2400m network device: %d\n", | |
908 | result); | |
909 | goto error_register_netdev; | |
910 | } | |
911 | netif_carrier_off(net_dev); | |
912 | ||
024f7f31 IPG |
913 | i2400m->wimax_dev.op_msg_from_user = i2400m_op_msg_from_user; |
914 | i2400m->wimax_dev.op_rfkill_sw_toggle = i2400m_op_rfkill_sw_toggle; | |
915 | i2400m->wimax_dev.op_reset = i2400m_op_reset; | |
8f90f3ee | 916 | |
024f7f31 IPG |
917 | result = wimax_dev_add(&i2400m->wimax_dev, net_dev); |
918 | if (result < 0) | |
919 | goto error_wimax_dev_add; | |
024f7f31 IPG |
920 | |
921 | /* Now setup all that requires a registered net and wimax device. */ | |
8987691a IPG |
922 | result = sysfs_create_group(&net_dev->dev.kobj, &i2400m_dev_attr_group); |
923 | if (result < 0) { | |
924 | dev_err(dev, "cannot setup i2400m's sysfs: %d\n", result); | |
925 | goto error_sysfs_setup; | |
926 | } | |
8f90f3ee | 927 | |
024f7f31 IPG |
928 | result = i2400m_debugfs_add(i2400m); |
929 | if (result < 0) { | |
930 | dev_err(dev, "cannot setup i2400m's debugfs: %d\n", result); | |
931 | goto error_debugfs_setup; | |
932 | } | |
8f90f3ee IPG |
933 | |
934 | result = i2400m_dev_start(i2400m, bm_flags); | |
935 | if (result < 0) | |
936 | goto error_dev_start; | |
024f7f31 IPG |
937 | d_fnend(3, dev, "(i2400m %p) = %d\n", i2400m, result); |
938 | return result; | |
939 | ||
8f90f3ee IPG |
940 | error_dev_start: |
941 | i2400m_debugfs_rm(i2400m); | |
024f7f31 | 942 | error_debugfs_setup: |
8987691a IPG |
943 | sysfs_remove_group(&i2400m->wimax_dev.net_dev->dev.kobj, |
944 | &i2400m_dev_attr_group); | |
945 | error_sysfs_setup: | |
024f7f31 IPG |
946 | wimax_dev_rm(&i2400m->wimax_dev); |
947 | error_wimax_dev_add: | |
024f7f31 IPG |
948 | unregister_netdev(net_dev); |
949 | error_register_netdev: | |
7b43ca70 | 950 | unregister_pm_notifier(&i2400m->pm_notifier); |
024f7f31 IPG |
951 | error_read_mac_addr: |
952 | error_bootrom_init: | |
0856ccf2 IPG |
953 | if (i2400m->bus_release) |
954 | i2400m->bus_release(i2400m); | |
955 | error_bus_setup: | |
2869da85 IPG |
956 | i2400m_bm_buf_free(i2400m); |
957 | error_bm_buf_alloc: | |
024f7f31 IPG |
958 | d_fnend(3, dev, "(i2400m %p) = %d\n", i2400m, result); |
959 | return result; | |
960 | } | |
961 | EXPORT_SYMBOL_GPL(i2400m_setup); | |
962 | ||
963 | ||
964 | /** | |
965 | * i2400m_release - release the bus-generic driver resources | |
966 | * | |
967 | * Sends a disconnect message and undoes any setup done by i2400m_setup() | |
968 | */ | |
969 | void i2400m_release(struct i2400m *i2400m) | |
970 | { | |
971 | struct device *dev = i2400m_dev(i2400m); | |
972 | ||
973 | d_fnstart(3, dev, "(i2400m %p)\n", i2400m); | |
974 | netif_stop_queue(i2400m->wimax_dev.net_dev); | |
975 | ||
8f90f3ee IPG |
976 | i2400m_dev_stop(i2400m); |
977 | ||
781ba456 TH |
978 | cancel_work_sync(&i2400m->reset_ws); |
979 | cancel_work_sync(&i2400m->recovery_ws); | |
980 | ||
024f7f31 | 981 | i2400m_debugfs_rm(i2400m); |
8987691a IPG |
982 | sysfs_remove_group(&i2400m->wimax_dev.net_dev->dev.kobj, |
983 | &i2400m_dev_attr_group); | |
024f7f31 | 984 | wimax_dev_rm(&i2400m->wimax_dev); |
024f7f31 | 985 | unregister_netdev(i2400m->wimax_dev.net_dev); |
7b43ca70 | 986 | unregister_pm_notifier(&i2400m->pm_notifier); |
0856ccf2 IPG |
987 | if (i2400m->bus_release) |
988 | i2400m->bus_release(i2400m); | |
8f90f3ee | 989 | i2400m_bm_buf_free(i2400m); |
024f7f31 IPG |
990 | d_fnend(3, dev, "(i2400m %p) = void\n", i2400m); |
991 | } | |
992 | EXPORT_SYMBOL_GPL(i2400m_release); | |
993 | ||
994 | ||
1af7ad51 IPG |
995 | /* |
996 | * Debug levels control; see debug.h | |
997 | */ | |
998 | struct d_level D_LEVEL[] = { | |
999 | D_SUBMODULE_DEFINE(control), | |
1000 | D_SUBMODULE_DEFINE(driver), | |
1001 | D_SUBMODULE_DEFINE(debugfs), | |
1002 | D_SUBMODULE_DEFINE(fw), | |
1003 | D_SUBMODULE_DEFINE(netdev), | |
1004 | D_SUBMODULE_DEFINE(rfkill), | |
1005 | D_SUBMODULE_DEFINE(rx), | |
4dc1bf07 | 1006 | D_SUBMODULE_DEFINE(sysfs), |
1af7ad51 IPG |
1007 | D_SUBMODULE_DEFINE(tx), |
1008 | }; | |
1009 | size_t D_LEVEL_SIZE = ARRAY_SIZE(D_LEVEL); | |
1010 | ||
1011 | ||
024f7f31 IPG |
1012 | static |
1013 | int __init i2400m_driver_init(void) | |
1014 | { | |
4c2b1a11 IPG |
1015 | d_parse_params(D_LEVEL, D_LEVEL_SIZE, i2400m_debug_params, |
1016 | "i2400m.debug"); | |
aba3792a | 1017 | return i2400m_barker_db_init(i2400m_barkers_params); |
024f7f31 IPG |
1018 | } |
1019 | module_init(i2400m_driver_init); | |
1020 | ||
1021 | static | |
1022 | void __exit i2400m_driver_exit(void) | |
1023 | { | |
aba3792a | 1024 | i2400m_barker_db_exit(); |
024f7f31 IPG |
1025 | } |
1026 | module_exit(i2400m_driver_exit); | |
1027 | ||
1028 | MODULE_AUTHOR("Intel Corporation <linux-wimax@intel.com>"); | |
1029 | MODULE_DESCRIPTION("Intel 2400M WiMAX networking bus-generic driver"); | |
1030 | MODULE_LICENSE("GPL"); |