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ff1d2767 JM |
1 | /* |
2 | * Host AP (software wireless LAN access point) driver for | |
3 | * Intersil Prism2/2.5/3. | |
4 | * | |
5 | * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen | |
6 | * <jkmaline@cc.hut.fi> | |
62fe7e37 | 7 | * Copyright (c) 2002-2005, Jouni Malinen <jkmaline@cc.hut.fi> |
ff1d2767 JM |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. See README and COPYING for | |
12 | * more details. | |
13 | * | |
14 | * FIX: | |
15 | * - there is currently no way of associating TX packets to correct wds device | |
16 | * when TX Exc/OK event occurs, so all tx_packets and some | |
17 | * tx_errors/tx_dropped are added to the main netdevice; using sw_support | |
18 | * field in txdesc might be used to fix this (using Alloc event to increment | |
19 | * tx_packets would need some further info in txfid table) | |
20 | * | |
21 | * Buffer Access Path (BAP) usage: | |
22 | * Prism2 cards have two separate BAPs for accessing the card memory. These | |
23 | * should allow concurrent access to two different frames and the driver | |
24 | * previously used BAP0 for sending data and BAP1 for receiving data. | |
25 | * However, there seems to be number of issues with concurrent access and at | |
26 | * least one know hardware bug in using BAP0 and BAP1 concurrently with PCI | |
27 | * Prism2.5. Therefore, the driver now only uses BAP0 for moving data between | |
28 | * host and card memories. BAP0 accesses are protected with local->baplock | |
29 | * (spin_lock_bh) to prevent concurrent use. | |
30 | */ | |
31 | ||
32 | ||
ff1d2767 JM |
33 | |
34 | #include <asm/delay.h> | |
35 | #include <asm/uaccess.h> | |
36 | ||
37 | #include <linux/slab.h> | |
38 | #include <linux/netdevice.h> | |
39 | #include <linux/etherdevice.h> | |
40 | #include <linux/proc_fs.h> | |
41 | #include <linux/if_arp.h> | |
42 | #include <linux/delay.h> | |
43 | #include <linux/random.h> | |
44 | #include <linux/wait.h> | |
45 | #include <linux/sched.h> | |
46 | #include <linux/rtnetlink.h> | |
47 | #include <linux/wireless.h> | |
48 | #include <net/iw_handler.h> | |
ebed67d2 JM |
49 | #include <net/ieee80211.h> |
50 | #include <net/ieee80211_crypt.h> | |
ff1d2767 JM |
51 | #include <asm/irq.h> |
52 | ||
ff1d2767 JM |
53 | #include "hostap_80211.h" |
54 | #include "hostap.h" | |
55 | #include "hostap_ap.h" | |
56 | ||
57 | ||
58 | /* #define final_version */ | |
59 | ||
60 | static int mtu = 1500; | |
61 | module_param(mtu, int, 0444); | |
62 | MODULE_PARM_DESC(mtu, "Maximum transfer unit"); | |
63 | ||
64 | static int channel[MAX_PARM_DEVICES] = { 3, DEF_INTS }; | |
65 | module_param_array(channel, int, NULL, 0444); | |
66 | MODULE_PARM_DESC(channel, "Initial channel"); | |
67 | ||
68 | static char essid[33] = "test"; | |
69 | module_param_string(essid, essid, sizeof(essid), 0444); | |
70 | MODULE_PARM_DESC(essid, "Host AP's ESSID"); | |
71 | ||
72 | static int iw_mode[MAX_PARM_DEVICES] = { IW_MODE_MASTER, DEF_INTS }; | |
73 | module_param_array(iw_mode, int, NULL, 0444); | |
74 | MODULE_PARM_DESC(iw_mode, "Initial operation mode"); | |
75 | ||
76 | static int beacon_int[MAX_PARM_DEVICES] = { 100, DEF_INTS }; | |
77 | module_param_array(beacon_int, int, NULL, 0444); | |
78 | MODULE_PARM_DESC(beacon_int, "Beacon interval (1 = 1024 usec)"); | |
79 | ||
80 | static int dtim_period[MAX_PARM_DEVICES] = { 1, DEF_INTS }; | |
81 | module_param_array(dtim_period, int, NULL, 0444); | |
82 | MODULE_PARM_DESC(dtim_period, "DTIM period"); | |
83 | ||
ff1d2767 JM |
84 | static char dev_template[16] = "wlan%d"; |
85 | module_param_string(dev_template, dev_template, sizeof(dev_template), 0444); | |
86 | MODULE_PARM_DESC(dev_template, "Prefix for network device name (default: " | |
87 | "wlan%d)"); | |
88 | ||
89 | #ifdef final_version | |
90 | #define EXTRA_EVENTS_WTERR 0 | |
91 | #else | |
92 | /* check WTERR events (Wait Time-out) in development versions */ | |
93 | #define EXTRA_EVENTS_WTERR HFA384X_EV_WTERR | |
94 | #endif | |
95 | ||
ff1d2767 JM |
96 | /* Events that will be using BAP0 */ |
97 | #define HFA384X_BAP0_EVENTS \ | |
98 | (HFA384X_EV_TXEXC | HFA384X_EV_RX | HFA384X_EV_INFO | HFA384X_EV_TX) | |
99 | ||
100 | /* event mask, i.e., events that will result in an interrupt */ | |
101 | #define HFA384X_EVENT_MASK \ | |
102 | (HFA384X_BAP0_EVENTS | HFA384X_EV_ALLOC | HFA384X_EV_INFDROP | \ | |
103 | HFA384X_EV_CMD | HFA384X_EV_TICK | \ | |
ea3f1865 | 104 | EXTRA_EVENTS_WTERR) |
ff1d2767 JM |
105 | |
106 | /* Default TX control flags: use 802.11 headers and request interrupt for | |
107 | * failed transmits. Frames that request ACK callback, will add | |
108 | * _TX_OK flag and _ALT_RTRY flag may be used to select different retry policy. | |
109 | */ | |
110 | #define HFA384X_TX_CTRL_FLAGS \ | |
111 | (HFA384X_TX_CTRL_802_11 | HFA384X_TX_CTRL_TX_EX) | |
112 | ||
113 | ||
114 | /* ca. 1 usec */ | |
115 | #define HFA384X_CMD_BUSY_TIMEOUT 5000 | |
116 | #define HFA384X_BAP_BUSY_TIMEOUT 50000 | |
117 | ||
118 | /* ca. 10 usec */ | |
119 | #define HFA384X_CMD_COMPL_TIMEOUT 20000 | |
120 | #define HFA384X_DL_COMPL_TIMEOUT 1000000 | |
121 | ||
122 | /* Wait times for initialization; yield to other processes to avoid busy | |
123 | * waiting for long time. */ | |
124 | #define HFA384X_INIT_TIMEOUT (HZ / 2) /* 500 ms */ | |
125 | #define HFA384X_ALLOC_COMPL_TIMEOUT (HZ / 20) /* 50 ms */ | |
126 | ||
127 | ||
128 | static void prism2_hw_reset(struct net_device *dev); | |
129 | static void prism2_check_sta_fw_version(local_info_t *local); | |
130 | ||
131 | #ifdef PRISM2_DOWNLOAD_SUPPORT | |
132 | /* hostap_download.c */ | |
133 | static int prism2_download_aux_dump(struct net_device *dev, | |
134 | unsigned int addr, int len, u8 *buf); | |
135 | static u8 * prism2_read_pda(struct net_device *dev); | |
136 | static int prism2_download(local_info_t *local, | |
137 | struct prism2_download_param *param); | |
138 | static void prism2_download_free_data(struct prism2_download_data *dl); | |
139 | static int prism2_download_volatile(local_info_t *local, | |
140 | struct prism2_download_data *param); | |
141 | static int prism2_download_genesis(local_info_t *local, | |
142 | struct prism2_download_data *param); | |
143 | static int prism2_get_ram_size(local_info_t *local); | |
144 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ | |
145 | ||
146 | ||
147 | ||
148 | ||
149 | #ifndef final_version | |
150 | /* magic value written to SWSUPPORT0 reg. for detecting whether card is still | |
151 | * present */ | |
152 | #define HFA384X_MAGIC 0x8A32 | |
153 | #endif | |
154 | ||
155 | ||
156 | static u16 hfa384x_read_reg(struct net_device *dev, u16 reg) | |
157 | { | |
158 | return HFA384X_INW(reg); | |
159 | } | |
160 | ||
161 | ||
162 | static void hfa384x_read_regs(struct net_device *dev, | |
163 | struct hfa384x_regs *regs) | |
164 | { | |
165 | regs->cmd = HFA384X_INW(HFA384X_CMD_OFF); | |
166 | regs->evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); | |
167 | regs->offset0 = HFA384X_INW(HFA384X_OFFSET0_OFF); | |
168 | regs->offset1 = HFA384X_INW(HFA384X_OFFSET1_OFF); | |
169 | regs->swsupport0 = HFA384X_INW(HFA384X_SWSUPPORT0_OFF); | |
170 | } | |
171 | ||
172 | ||
173 | /** | |
174 | * __hostap_cmd_queue_free - Free Prism2 command queue entry (private) | |
175 | * @local: pointer to private Host AP driver data | |
176 | * @entry: Prism2 command queue entry to be freed | |
177 | * @del_req: request the entry to be removed | |
178 | * | |
179 | * Internal helper function for freeing Prism2 command queue entries. | |
180 | * Caller must have acquired local->cmdlock before calling this function. | |
181 | */ | |
182 | static inline void __hostap_cmd_queue_free(local_info_t *local, | |
183 | struct hostap_cmd_queue *entry, | |
184 | int del_req) | |
185 | { | |
186 | if (del_req) { | |
187 | entry->del_req = 1; | |
188 | if (!list_empty(&entry->list)) { | |
189 | list_del_init(&entry->list); | |
190 | local->cmd_queue_len--; | |
191 | } | |
192 | } | |
193 | ||
194 | if (atomic_dec_and_test(&entry->usecnt) && entry->del_req) | |
195 | kfree(entry); | |
196 | } | |
197 | ||
198 | ||
199 | /** | |
200 | * hostap_cmd_queue_free - Free Prism2 command queue entry | |
201 | * @local: pointer to private Host AP driver data | |
202 | * @entry: Prism2 command queue entry to be freed | |
203 | * @del_req: request the entry to be removed | |
204 | * | |
205 | * Free a Prism2 command queue entry. | |
206 | */ | |
207 | static inline void hostap_cmd_queue_free(local_info_t *local, | |
208 | struct hostap_cmd_queue *entry, | |
209 | int del_req) | |
210 | { | |
211 | unsigned long flags; | |
212 | ||
213 | spin_lock_irqsave(&local->cmdlock, flags); | |
214 | __hostap_cmd_queue_free(local, entry, del_req); | |
215 | spin_unlock_irqrestore(&local->cmdlock, flags); | |
216 | } | |
217 | ||
218 | ||
219 | /** | |
220 | * prism2_clear_cmd_queue - Free all pending Prism2 command queue entries | |
221 | * @local: pointer to private Host AP driver data | |
222 | */ | |
223 | static void prism2_clear_cmd_queue(local_info_t *local) | |
224 | { | |
225 | struct list_head *ptr, *n; | |
226 | unsigned long flags; | |
227 | struct hostap_cmd_queue *entry; | |
228 | ||
229 | spin_lock_irqsave(&local->cmdlock, flags); | |
230 | list_for_each_safe(ptr, n, &local->cmd_queue) { | |
231 | entry = list_entry(ptr, struct hostap_cmd_queue, list); | |
232 | atomic_inc(&entry->usecnt); | |
233 | printk(KERN_DEBUG "%s: removed pending cmd_queue entry " | |
234 | "(type=%d, cmd=0x%04x, param0=0x%04x)\n", | |
235 | local->dev->name, entry->type, entry->cmd, | |
236 | entry->param0); | |
237 | __hostap_cmd_queue_free(local, entry, 1); | |
238 | } | |
239 | if (local->cmd_queue_len) { | |
240 | /* This should not happen; print debug message and clear | |
241 | * queue length. */ | |
242 | printk(KERN_DEBUG "%s: cmd_queue_len (%d) not zero after " | |
243 | "flush\n", local->dev->name, local->cmd_queue_len); | |
244 | local->cmd_queue_len = 0; | |
245 | } | |
246 | spin_unlock_irqrestore(&local->cmdlock, flags); | |
247 | } | |
248 | ||
249 | ||
250 | /** | |
251 | * hfa384x_cmd_issue - Issue a Prism2 command to the hardware | |
252 | * @dev: pointer to net_device | |
253 | * @entry: Prism2 command queue entry to be issued | |
254 | */ | |
858119e1 | 255 | static int hfa384x_cmd_issue(struct net_device *dev, |
ff1d2767 JM |
256 | struct hostap_cmd_queue *entry) |
257 | { | |
258 | struct hostap_interface *iface; | |
259 | local_info_t *local; | |
260 | int tries; | |
261 | u16 reg; | |
262 | unsigned long flags; | |
263 | ||
264 | iface = netdev_priv(dev); | |
265 | local = iface->local; | |
266 | ||
267 | if (local->func->card_present && !local->func->card_present(local)) | |
268 | return -ENODEV; | |
269 | ||
270 | if (entry->issued) { | |
271 | printk(KERN_DEBUG "%s: driver bug - re-issuing command @%p\n", | |
272 | dev->name, entry); | |
273 | } | |
274 | ||
275 | /* wait until busy bit is clear; this should always be clear since the | |
276 | * commands are serialized */ | |
277 | tries = HFA384X_CMD_BUSY_TIMEOUT; | |
278 | while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { | |
279 | tries--; | |
280 | udelay(1); | |
281 | } | |
282 | #ifndef final_version | |
283 | if (tries != HFA384X_CMD_BUSY_TIMEOUT) { | |
284 | prism2_io_debug_error(dev, 1); | |
285 | printk(KERN_DEBUG "%s: hfa384x_cmd_issue: cmd reg was busy " | |
286 | "for %d usec\n", dev->name, | |
287 | HFA384X_CMD_BUSY_TIMEOUT - tries); | |
288 | } | |
289 | #endif | |
290 | if (tries == 0) { | |
291 | reg = HFA384X_INW(HFA384X_CMD_OFF); | |
292 | prism2_io_debug_error(dev, 2); | |
293 | printk(KERN_DEBUG "%s: hfa384x_cmd_issue - timeout - " | |
294 | "reg=0x%04x\n", dev->name, reg); | |
295 | return -ETIMEDOUT; | |
296 | } | |
297 | ||
298 | /* write command */ | |
299 | spin_lock_irqsave(&local->cmdlock, flags); | |
300 | HFA384X_OUTW(entry->param0, HFA384X_PARAM0_OFF); | |
301 | HFA384X_OUTW(entry->param1, HFA384X_PARAM1_OFF); | |
302 | HFA384X_OUTW(entry->cmd, HFA384X_CMD_OFF); | |
303 | entry->issued = 1; | |
304 | spin_unlock_irqrestore(&local->cmdlock, flags); | |
305 | ||
306 | return 0; | |
307 | } | |
308 | ||
309 | ||
310 | /** | |
311 | * hfa384x_cmd - Issue a Prism2 command and wait (sleep) for completion | |
312 | * @dev: pointer to net_device | |
313 | * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) | |
314 | * @param0: value for Param0 register | |
315 | * @param1: value for Param1 register (pointer; %NULL if not used) | |
316 | * @resp0: pointer for Resp0 data or %NULL if Resp0 is not needed | |
317 | * | |
318 | * Issue given command (possibly after waiting in command queue) and sleep | |
319 | * until the command is completed (or timed out or interrupted). This can be | |
320 | * called only from user process context. | |
321 | */ | |
322 | static int hfa384x_cmd(struct net_device *dev, u16 cmd, u16 param0, | |
323 | u16 *param1, u16 *resp0) | |
324 | { | |
325 | struct hostap_interface *iface; | |
326 | local_info_t *local; | |
327 | int err, res, issue, issued = 0; | |
328 | unsigned long flags; | |
329 | struct hostap_cmd_queue *entry; | |
330 | DECLARE_WAITQUEUE(wait, current); | |
331 | ||
332 | iface = netdev_priv(dev); | |
333 | local = iface->local; | |
334 | ||
335 | if (in_interrupt()) { | |
336 | printk(KERN_DEBUG "%s: hfa384x_cmd called from interrupt " | |
337 | "context\n", dev->name); | |
338 | return -1; | |
339 | } | |
340 | ||
341 | if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN) { | |
342 | printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", | |
343 | dev->name); | |
344 | return -1; | |
345 | } | |
346 | ||
347 | if (signal_pending(current)) | |
348 | return -EINTR; | |
349 | ||
350 | entry = (struct hostap_cmd_queue *) | |
351 | kmalloc(sizeof(*entry), GFP_ATOMIC); | |
352 | if (entry == NULL) { | |
353 | printk(KERN_DEBUG "%s: hfa384x_cmd - kmalloc failed\n", | |
354 | dev->name); | |
355 | return -ENOMEM; | |
356 | } | |
357 | memset(entry, 0, sizeof(*entry)); | |
358 | atomic_set(&entry->usecnt, 1); | |
359 | entry->type = CMD_SLEEP; | |
360 | entry->cmd = cmd; | |
361 | entry->param0 = param0; | |
362 | if (param1) | |
363 | entry->param1 = *param1; | |
364 | init_waitqueue_head(&entry->compl); | |
365 | ||
366 | /* prepare to wait for command completion event, but do not sleep yet | |
367 | */ | |
368 | add_wait_queue(&entry->compl, &wait); | |
369 | set_current_state(TASK_INTERRUPTIBLE); | |
370 | ||
371 | spin_lock_irqsave(&local->cmdlock, flags); | |
372 | issue = list_empty(&local->cmd_queue); | |
373 | if (issue) | |
374 | entry->issuing = 1; | |
375 | list_add_tail(&entry->list, &local->cmd_queue); | |
376 | local->cmd_queue_len++; | |
377 | spin_unlock_irqrestore(&local->cmdlock, flags); | |
378 | ||
379 | err = 0; | |
380 | if (!issue) | |
381 | goto wait_completion; | |
382 | ||
383 | if (signal_pending(current)) | |
384 | err = -EINTR; | |
385 | ||
386 | if (!err) { | |
387 | if (hfa384x_cmd_issue(dev, entry)) | |
388 | err = -ETIMEDOUT; | |
389 | else | |
390 | issued = 1; | |
391 | } | |
392 | ||
393 | wait_completion: | |
394 | if (!err && entry->type != CMD_COMPLETED) { | |
395 | /* sleep until command is completed or timed out */ | |
396 | res = schedule_timeout(2 * HZ); | |
397 | } else | |
398 | res = -1; | |
399 | ||
400 | if (!err && signal_pending(current)) | |
401 | err = -EINTR; | |
402 | ||
403 | if (err && issued) { | |
404 | /* the command was issued, so a CmdCompl event should occur | |
405 | * soon; however, there's a pending signal and | |
406 | * schedule_timeout() would be interrupted; wait a short period | |
407 | * of time to avoid removing entry from the list before | |
408 | * CmdCompl event */ | |
409 | udelay(300); | |
410 | } | |
411 | ||
412 | set_current_state(TASK_RUNNING); | |
413 | remove_wait_queue(&entry->compl, &wait); | |
414 | ||
415 | /* If entry->list is still in the list, it must be removed | |
416 | * first and in this case prism2_cmd_ev() does not yet have | |
417 | * local reference to it, and the data can be kfree()'d | |
418 | * here. If the command completion event is still generated, | |
419 | * it will be assigned to next (possibly) pending command, but | |
420 | * the driver will reset the card anyway due to timeout | |
421 | * | |
422 | * If the entry is not in the list prism2_cmd_ev() has a local | |
423 | * reference to it, but keeps cmdlock as long as the data is | |
424 | * needed, so the data can be kfree()'d here. */ | |
425 | ||
426 | /* FIX: if the entry->list is in the list, it has not been completed | |
427 | * yet, so removing it here is somewhat wrong.. this could cause | |
428 | * references to freed memory and next list_del() causing NULL pointer | |
429 | * dereference.. it would probably be better to leave the entry in the | |
430 | * list and the list should be emptied during hw reset */ | |
431 | ||
432 | spin_lock_irqsave(&local->cmdlock, flags); | |
433 | if (!list_empty(&entry->list)) { | |
434 | printk(KERN_DEBUG "%s: hfa384x_cmd: entry still in list? " | |
435 | "(entry=%p, type=%d, res=%d)\n", dev->name, entry, | |
436 | entry->type, res); | |
437 | list_del_init(&entry->list); | |
438 | local->cmd_queue_len--; | |
439 | } | |
440 | spin_unlock_irqrestore(&local->cmdlock, flags); | |
441 | ||
442 | if (err) { | |
443 | printk(KERN_DEBUG "%s: hfa384x_cmd: interrupted; err=%d\n", | |
444 | dev->name, err); | |
445 | res = err; | |
446 | goto done; | |
447 | } | |
448 | ||
449 | if (entry->type != CMD_COMPLETED) { | |
450 | u16 reg = HFA384X_INW(HFA384X_EVSTAT_OFF); | |
451 | printk(KERN_DEBUG "%s: hfa384x_cmd: command was not " | |
452 | "completed (res=%d, entry=%p, type=%d, cmd=0x%04x, " | |
453 | "param0=0x%04x, EVSTAT=%04x INTEN=%04x)\n", dev->name, | |
454 | res, entry, entry->type, entry->cmd, entry->param0, reg, | |
455 | HFA384X_INW(HFA384X_INTEN_OFF)); | |
456 | if (reg & HFA384X_EV_CMD) { | |
457 | /* Command completion event is pending, but the | |
458 | * interrupt was not delivered - probably an issue | |
459 | * with pcmcia-cs configuration. */ | |
460 | printk(KERN_WARNING "%s: interrupt delivery does not " | |
461 | "seem to work\n", dev->name); | |
462 | } | |
463 | prism2_io_debug_error(dev, 3); | |
464 | res = -ETIMEDOUT; | |
465 | goto done; | |
466 | } | |
467 | ||
468 | if (resp0 != NULL) | |
469 | *resp0 = entry->resp0; | |
470 | #ifndef final_version | |
471 | if (entry->res) { | |
472 | printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x, " | |
473 | "resp0=0x%04x\n", | |
474 | dev->name, cmd, entry->res, entry->resp0); | |
475 | } | |
476 | #endif /* final_version */ | |
477 | ||
478 | res = entry->res; | |
479 | done: | |
480 | hostap_cmd_queue_free(local, entry, 1); | |
481 | return res; | |
482 | } | |
483 | ||
484 | ||
485 | /** | |
486 | * hfa384x_cmd_callback - Issue a Prism2 command; callback when completed | |
487 | * @dev: pointer to net_device | |
488 | * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) | |
489 | * @param0: value for Param0 register | |
490 | * @callback: command completion callback function (%NULL = no callback) | |
b15eff26 | 491 | * @context: context data to be given to the callback function |
ff1d2767 JM |
492 | * |
493 | * Issue given command (possibly after waiting in command queue) and use | |
494 | * callback function to indicate command completion. This can be called both | |
495 | * from user and interrupt context. The callback function will be called in | |
496 | * hardware IRQ context. It can be %NULL, when no function is called when | |
497 | * command is completed. | |
498 | */ | |
499 | static int hfa384x_cmd_callback(struct net_device *dev, u16 cmd, u16 param0, | |
500 | void (*callback)(struct net_device *dev, | |
b15eff26 | 501 | long context, u16 resp0, |
ff1d2767 | 502 | u16 status), |
b15eff26 | 503 | long context) |
ff1d2767 JM |
504 | { |
505 | struct hostap_interface *iface; | |
506 | local_info_t *local; | |
507 | int issue, ret; | |
508 | unsigned long flags; | |
509 | struct hostap_cmd_queue *entry; | |
510 | ||
511 | iface = netdev_priv(dev); | |
512 | local = iface->local; | |
513 | ||
514 | if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN + 2) { | |
515 | printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", | |
516 | dev->name); | |
517 | return -1; | |
518 | } | |
519 | ||
520 | entry = (struct hostap_cmd_queue *) | |
521 | kmalloc(sizeof(*entry), GFP_ATOMIC); | |
522 | if (entry == NULL) { | |
523 | printk(KERN_DEBUG "%s: hfa384x_cmd_callback - kmalloc " | |
524 | "failed\n", dev->name); | |
525 | return -ENOMEM; | |
526 | } | |
527 | memset(entry, 0, sizeof(*entry)); | |
528 | atomic_set(&entry->usecnt, 1); | |
529 | entry->type = CMD_CALLBACK; | |
530 | entry->cmd = cmd; | |
531 | entry->param0 = param0; | |
532 | entry->callback = callback; | |
533 | entry->context = context; | |
534 | ||
535 | spin_lock_irqsave(&local->cmdlock, flags); | |
536 | issue = list_empty(&local->cmd_queue); | |
537 | if (issue) | |
538 | entry->issuing = 1; | |
539 | list_add_tail(&entry->list, &local->cmd_queue); | |
540 | local->cmd_queue_len++; | |
541 | spin_unlock_irqrestore(&local->cmdlock, flags); | |
542 | ||
543 | if (issue && hfa384x_cmd_issue(dev, entry)) | |
544 | ret = -ETIMEDOUT; | |
545 | else | |
546 | ret = 0; | |
547 | ||
548 | hostap_cmd_queue_free(local, entry, ret); | |
549 | ||
550 | return ret; | |
551 | } | |
552 | ||
553 | ||
554 | /** | |
555 | * __hfa384x_cmd_no_wait - Issue a Prism2 command (private) | |
556 | * @dev: pointer to net_device | |
557 | * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) | |
558 | * @param0: value for Param0 register | |
559 | * @io_debug_num: I/O debug error number | |
560 | * | |
561 | * Shared helper function for hfa384x_cmd_wait() and hfa384x_cmd_no_wait(). | |
562 | */ | |
563 | static int __hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, u16 param0, | |
564 | int io_debug_num) | |
565 | { | |
566 | int tries; | |
567 | u16 reg; | |
568 | ||
569 | /* wait until busy bit is clear; this should always be clear since the | |
570 | * commands are serialized */ | |
571 | tries = HFA384X_CMD_BUSY_TIMEOUT; | |
572 | while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { | |
573 | tries--; | |
574 | udelay(1); | |
575 | } | |
576 | if (tries == 0) { | |
577 | reg = HFA384X_INW(HFA384X_CMD_OFF); | |
578 | prism2_io_debug_error(dev, io_debug_num); | |
579 | printk(KERN_DEBUG "%s: __hfa384x_cmd_no_wait(%d) - timeout - " | |
580 | "reg=0x%04x\n", dev->name, io_debug_num, reg); | |
581 | return -ETIMEDOUT; | |
582 | } | |
583 | ||
584 | /* write command */ | |
585 | HFA384X_OUTW(param0, HFA384X_PARAM0_OFF); | |
586 | HFA384X_OUTW(cmd, HFA384X_CMD_OFF); | |
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
591 | ||
592 | /** | |
593 | * hfa384x_cmd_wait - Issue a Prism2 command and busy wait for completion | |
594 | * @dev: pointer to net_device | |
595 | * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) | |
596 | * @param0: value for Param0 register | |
597 | */ | |
598 | static int hfa384x_cmd_wait(struct net_device *dev, u16 cmd, u16 param0) | |
599 | { | |
600 | int res, tries; | |
601 | u16 reg; | |
602 | ||
603 | res = __hfa384x_cmd_no_wait(dev, cmd, param0, 4); | |
604 | if (res) | |
605 | return res; | |
606 | ||
607 | /* wait for command completion */ | |
608 | if ((cmd & HFA384X_CMDCODE_MASK) == HFA384X_CMDCODE_DOWNLOAD) | |
609 | tries = HFA384X_DL_COMPL_TIMEOUT; | |
610 | else | |
611 | tries = HFA384X_CMD_COMPL_TIMEOUT; | |
612 | ||
613 | while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && | |
614 | tries > 0) { | |
615 | tries--; | |
616 | udelay(10); | |
617 | } | |
618 | if (tries == 0) { | |
619 | reg = HFA384X_INW(HFA384X_EVSTAT_OFF); | |
620 | prism2_io_debug_error(dev, 5); | |
621 | printk(KERN_DEBUG "%s: hfa384x_cmd_wait - timeout2 - " | |
622 | "reg=0x%04x\n", dev->name, reg); | |
623 | return -ETIMEDOUT; | |
624 | } | |
625 | ||
626 | res = (HFA384X_INW(HFA384X_STATUS_OFF) & | |
627 | (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | BIT(9) | | |
628 | BIT(8))) >> 8; | |
629 | #ifndef final_version | |
630 | if (res) { | |
631 | printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x\n", | |
632 | dev->name, cmd, res); | |
633 | } | |
634 | #endif | |
635 | ||
636 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); | |
637 | ||
638 | return res; | |
639 | } | |
640 | ||
641 | ||
642 | /** | |
643 | * hfa384x_cmd_no_wait - Issue a Prism2 command; do not wait for completion | |
644 | * @dev: pointer to net_device | |
645 | * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) | |
646 | * @param0: value for Param0 register | |
647 | */ | |
648 | static inline int hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, | |
649 | u16 param0) | |
650 | { | |
651 | return __hfa384x_cmd_no_wait(dev, cmd, param0, 6); | |
652 | } | |
653 | ||
654 | ||
655 | /** | |
656 | * prism2_cmd_ev - Prism2 command completion event handler | |
657 | * @dev: pointer to net_device | |
658 | * | |
659 | * Interrupt handler for command completion events. Called by the main | |
660 | * interrupt handler in hardware IRQ context. Read Resp0 and status registers | |
661 | * from the hardware and ACK the event. Depending on the issued command type | |
662 | * either wake up the sleeping process that is waiting for command completion | |
663 | * or call the callback function. Issue the next command, if one is pending. | |
664 | */ | |
665 | static void prism2_cmd_ev(struct net_device *dev) | |
666 | { | |
667 | struct hostap_interface *iface; | |
668 | local_info_t *local; | |
669 | struct hostap_cmd_queue *entry = NULL; | |
670 | ||
671 | iface = netdev_priv(dev); | |
672 | local = iface->local; | |
673 | ||
674 | spin_lock(&local->cmdlock); | |
675 | if (!list_empty(&local->cmd_queue)) { | |
676 | entry = list_entry(local->cmd_queue.next, | |
677 | struct hostap_cmd_queue, list); | |
678 | atomic_inc(&entry->usecnt); | |
679 | list_del_init(&entry->list); | |
680 | local->cmd_queue_len--; | |
681 | ||
682 | if (!entry->issued) { | |
683 | printk(KERN_DEBUG "%s: Command completion event, but " | |
684 | "cmd not issued\n", dev->name); | |
685 | __hostap_cmd_queue_free(local, entry, 1); | |
686 | entry = NULL; | |
687 | } | |
688 | } | |
689 | spin_unlock(&local->cmdlock); | |
690 | ||
691 | if (!entry) { | |
692 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); | |
693 | printk(KERN_DEBUG "%s: Command completion event, but no " | |
694 | "pending commands\n", dev->name); | |
695 | return; | |
696 | } | |
697 | ||
698 | entry->resp0 = HFA384X_INW(HFA384X_RESP0_OFF); | |
699 | entry->res = (HFA384X_INW(HFA384X_STATUS_OFF) & | |
700 | (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | | |
701 | BIT(9) | BIT(8))) >> 8; | |
702 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); | |
703 | ||
704 | /* TODO: rest of the CmdEv handling could be moved to tasklet */ | |
705 | if (entry->type == CMD_SLEEP) { | |
706 | entry->type = CMD_COMPLETED; | |
707 | wake_up_interruptible(&entry->compl); | |
708 | } else if (entry->type == CMD_CALLBACK) { | |
709 | if (entry->callback) | |
710 | entry->callback(dev, entry->context, entry->resp0, | |
711 | entry->res); | |
712 | } else { | |
713 | printk(KERN_DEBUG "%s: Invalid command completion type %d\n", | |
714 | dev->name, entry->type); | |
715 | } | |
716 | hostap_cmd_queue_free(local, entry, 1); | |
717 | ||
718 | /* issue next command, if pending */ | |
719 | entry = NULL; | |
720 | spin_lock(&local->cmdlock); | |
721 | if (!list_empty(&local->cmd_queue)) { | |
722 | entry = list_entry(local->cmd_queue.next, | |
723 | struct hostap_cmd_queue, list); | |
724 | if (entry->issuing) { | |
725 | /* hfa384x_cmd() has already started issuing this | |
726 | * command, so do not start here */ | |
727 | entry = NULL; | |
728 | } | |
729 | if (entry) | |
730 | atomic_inc(&entry->usecnt); | |
731 | } | |
732 | spin_unlock(&local->cmdlock); | |
733 | ||
734 | if (entry) { | |
735 | /* issue next command; if command issuing fails, remove the | |
736 | * entry from cmd_queue */ | |
737 | int res = hfa384x_cmd_issue(dev, entry); | |
738 | spin_lock(&local->cmdlock); | |
739 | __hostap_cmd_queue_free(local, entry, res); | |
740 | spin_unlock(&local->cmdlock); | |
741 | } | |
742 | } | |
743 | ||
744 | ||
858119e1 | 745 | static int hfa384x_wait_offset(struct net_device *dev, u16 o_off) |
ff1d2767 JM |
746 | { |
747 | int tries = HFA384X_BAP_BUSY_TIMEOUT; | |
748 | int res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; | |
749 | ||
750 | while (res && tries > 0) { | |
751 | tries--; | |
752 | udelay(1); | |
753 | res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; | |
754 | } | |
755 | return res; | |
756 | } | |
757 | ||
758 | ||
759 | /* Offset must be even */ | |
760 | static int hfa384x_setup_bap(struct net_device *dev, u16 bap, u16 id, | |
761 | int offset) | |
762 | { | |
763 | u16 o_off, s_off; | |
764 | int ret = 0; | |
765 | ||
766 | if (offset % 2 || bap > 1) | |
767 | return -EINVAL; | |
768 | ||
769 | if (bap == BAP1) { | |
770 | o_off = HFA384X_OFFSET1_OFF; | |
771 | s_off = HFA384X_SELECT1_OFF; | |
772 | } else { | |
773 | o_off = HFA384X_OFFSET0_OFF; | |
774 | s_off = HFA384X_SELECT0_OFF; | |
775 | } | |
776 | ||
777 | if (hfa384x_wait_offset(dev, o_off)) { | |
778 | prism2_io_debug_error(dev, 7); | |
779 | printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout before\n", | |
780 | dev->name); | |
781 | ret = -ETIMEDOUT; | |
782 | goto out; | |
783 | } | |
784 | ||
785 | HFA384X_OUTW(id, s_off); | |
786 | HFA384X_OUTW(offset, o_off); | |
787 | ||
788 | if (hfa384x_wait_offset(dev, o_off)) { | |
789 | prism2_io_debug_error(dev, 8); | |
790 | printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout after\n", | |
791 | dev->name); | |
792 | ret = -ETIMEDOUT; | |
793 | goto out; | |
794 | } | |
795 | #ifndef final_version | |
796 | if (HFA384X_INW(o_off) & HFA384X_OFFSET_ERR) { | |
797 | prism2_io_debug_error(dev, 9); | |
798 | printk(KERN_DEBUG "%s: hfa384x_setup_bap - offset error " | |
799 | "(%d,0x04%x,%d); reg=0x%04x\n", | |
800 | dev->name, bap, id, offset, HFA384X_INW(o_off)); | |
801 | ret = -EINVAL; | |
802 | } | |
803 | #endif | |
804 | ||
805 | out: | |
806 | return ret; | |
807 | } | |
808 | ||
809 | ||
810 | static int hfa384x_get_rid(struct net_device *dev, u16 rid, void *buf, int len, | |
811 | int exact_len) | |
812 | { | |
813 | struct hostap_interface *iface; | |
814 | local_info_t *local; | |
815 | int res, rlen = 0; | |
816 | struct hfa384x_rid_hdr rec; | |
817 | ||
818 | iface = netdev_priv(dev); | |
819 | local = iface->local; | |
820 | ||
821 | if (local->no_pri) { | |
822 | printk(KERN_DEBUG "%s: cannot get RID %04x (len=%d) - no PRI " | |
823 | "f/w\n", dev->name, rid, len); | |
824 | return -ENOTTY; /* Well.. not really correct, but return | |
825 | * something unique enough.. */ | |
826 | } | |
827 | ||
828 | if ((local->func->card_present && !local->func->card_present(local)) || | |
829 | local->hw_downloading) | |
830 | return -ENODEV; | |
831 | ||
832 | res = down_interruptible(&local->rid_bap_sem); | |
833 | if (res) | |
834 | return res; | |
835 | ||
836 | res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS, rid, NULL, NULL); | |
837 | if (res) { | |
838 | printk(KERN_DEBUG "%s: hfa384x_get_rid: CMDCODE_ACCESS failed " | |
839 | "(res=%d, rid=%04x, len=%d)\n", | |
840 | dev->name, res, rid, len); | |
841 | up(&local->rid_bap_sem); | |
842 | return res; | |
843 | } | |
844 | ||
845 | spin_lock_bh(&local->baplock); | |
846 | ||
847 | res = hfa384x_setup_bap(dev, BAP0, rid, 0); | |
848 | if (!res) | |
849 | res = hfa384x_from_bap(dev, BAP0, &rec, sizeof(rec)); | |
850 | ||
851 | if (le16_to_cpu(rec.len) == 0) { | |
852 | /* RID not available */ | |
853 | res = -ENODATA; | |
854 | } | |
855 | ||
856 | rlen = (le16_to_cpu(rec.len) - 1) * 2; | |
857 | if (!res && exact_len && rlen != len) { | |
858 | printk(KERN_DEBUG "%s: hfa384x_get_rid - RID len mismatch: " | |
859 | "rid=0x%04x, len=%d (expected %d)\n", | |
860 | dev->name, rid, rlen, len); | |
861 | res = -ENODATA; | |
862 | } | |
863 | ||
864 | if (!res) | |
865 | res = hfa384x_from_bap(dev, BAP0, buf, len); | |
866 | ||
867 | spin_unlock_bh(&local->baplock); | |
868 | up(&local->rid_bap_sem); | |
869 | ||
870 | if (res) { | |
871 | if (res != -ENODATA) | |
872 | printk(KERN_DEBUG "%s: hfa384x_get_rid (rid=%04x, " | |
873 | "len=%d) - failed - res=%d\n", dev->name, rid, | |
874 | len, res); | |
875 | if (res == -ETIMEDOUT) | |
876 | prism2_hw_reset(dev); | |
877 | return res; | |
878 | } | |
879 | ||
880 | return rlen; | |
881 | } | |
882 | ||
883 | ||
884 | static int hfa384x_set_rid(struct net_device *dev, u16 rid, void *buf, int len) | |
885 | { | |
886 | struct hostap_interface *iface; | |
887 | local_info_t *local; | |
888 | struct hfa384x_rid_hdr rec; | |
889 | int res; | |
890 | ||
891 | iface = netdev_priv(dev); | |
892 | local = iface->local; | |
893 | ||
894 | if (local->no_pri) { | |
895 | printk(KERN_DEBUG "%s: cannot set RID %04x (len=%d) - no PRI " | |
896 | "f/w\n", dev->name, rid, len); | |
897 | return -ENOTTY; /* Well.. not really correct, but return | |
898 | * something unique enough.. */ | |
899 | } | |
900 | ||
901 | if ((local->func->card_present && !local->func->card_present(local)) || | |
902 | local->hw_downloading) | |
903 | return -ENODEV; | |
904 | ||
905 | rec.rid = cpu_to_le16(rid); | |
906 | /* RID len in words and +1 for rec.rid */ | |
907 | rec.len = cpu_to_le16(len / 2 + len % 2 + 1); | |
908 | ||
909 | res = down_interruptible(&local->rid_bap_sem); | |
910 | if (res) | |
911 | return res; | |
912 | ||
913 | spin_lock_bh(&local->baplock); | |
914 | res = hfa384x_setup_bap(dev, BAP0, rid, 0); | |
915 | if (!res) | |
916 | res = hfa384x_to_bap(dev, BAP0, &rec, sizeof(rec)); | |
917 | if (!res) | |
918 | res = hfa384x_to_bap(dev, BAP0, buf, len); | |
919 | spin_unlock_bh(&local->baplock); | |
920 | ||
921 | if (res) { | |
922 | printk(KERN_DEBUG "%s: hfa384x_set_rid (rid=%04x, len=%d) - " | |
923 | "failed - res=%d\n", dev->name, rid, len, res); | |
924 | up(&local->rid_bap_sem); | |
925 | return res; | |
926 | } | |
927 | ||
928 | res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS_WRITE, rid, NULL, NULL); | |
929 | up(&local->rid_bap_sem); | |
971d1e69 | 930 | |
ff1d2767 JM |
931 | if (res) { |
932 | printk(KERN_DEBUG "%s: hfa384x_set_rid: CMDCODE_ACCESS_WRITE " | |
933 | "failed (res=%d, rid=%04x, len=%d)\n", | |
934 | dev->name, res, rid, len); | |
ff1d2767 | 935 | |
971d1e69 AB |
936 | if (res == -ETIMEDOUT) |
937 | prism2_hw_reset(dev); | |
938 | } | |
ff1d2767 JM |
939 | |
940 | return res; | |
941 | } | |
942 | ||
943 | ||
944 | static void hfa384x_disable_interrupts(struct net_device *dev) | |
945 | { | |
946 | /* disable interrupts and clear event status */ | |
947 | HFA384X_OUTW(0, HFA384X_INTEN_OFF); | |
948 | HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); | |
949 | } | |
950 | ||
951 | ||
952 | static void hfa384x_enable_interrupts(struct net_device *dev) | |
953 | { | |
954 | /* ack pending events and enable interrupts from selected events */ | |
955 | HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); | |
956 | HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); | |
957 | } | |
958 | ||
959 | ||
960 | static void hfa384x_events_no_bap0(struct net_device *dev) | |
961 | { | |
962 | HFA384X_OUTW(HFA384X_EVENT_MASK & ~HFA384X_BAP0_EVENTS, | |
963 | HFA384X_INTEN_OFF); | |
964 | } | |
965 | ||
966 | ||
967 | static void hfa384x_events_all(struct net_device *dev) | |
968 | { | |
969 | HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); | |
970 | } | |
971 | ||
972 | ||
973 | static void hfa384x_events_only_cmd(struct net_device *dev) | |
974 | { | |
975 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_INTEN_OFF); | |
976 | } | |
977 | ||
978 | ||
979 | static u16 hfa384x_allocate_fid(struct net_device *dev, int len) | |
980 | { | |
981 | u16 fid; | |
982 | unsigned long delay; | |
983 | ||
984 | /* FIX: this could be replace with hfa384x_cmd() if the Alloc event | |
985 | * below would be handled like CmdCompl event (sleep here, wake up from | |
986 | * interrupt handler */ | |
987 | if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_ALLOC, len)) { | |
988 | printk(KERN_DEBUG "%s: cannot allocate fid, len=%d\n", | |
989 | dev->name, len); | |
990 | return 0xffff; | |
991 | } | |
992 | ||
993 | delay = jiffies + HFA384X_ALLOC_COMPL_TIMEOUT; | |
994 | while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC) && | |
995 | time_before(jiffies, delay)) | |
996 | yield(); | |
997 | if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC)) { | |
998 | printk("%s: fid allocate, len=%d - timeout\n", dev->name, len); | |
999 | return 0xffff; | |
1000 | } | |
1001 | ||
1002 | fid = HFA384X_INW(HFA384X_ALLOCFID_OFF); | |
1003 | HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); | |
1004 | ||
1005 | return fid; | |
1006 | } | |
1007 | ||
1008 | ||
1009 | static int prism2_reset_port(struct net_device *dev) | |
1010 | { | |
1011 | struct hostap_interface *iface; | |
1012 | local_info_t *local; | |
1013 | int res; | |
1014 | ||
1015 | iface = netdev_priv(dev); | |
1016 | local = iface->local; | |
1017 | ||
1018 | if (!local->dev_enabled) | |
1019 | return 0; | |
1020 | ||
1021 | res = hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, | |
1022 | NULL, NULL); | |
1023 | if (res) | |
1024 | printk(KERN_DEBUG "%s: reset port failed to disable port\n", | |
1025 | dev->name); | |
1026 | else { | |
1027 | res = hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, | |
1028 | NULL, NULL); | |
1029 | if (res) | |
1030 | printk(KERN_DEBUG "%s: reset port failed to enable " | |
1031 | "port\n", dev->name); | |
1032 | } | |
1033 | ||
1034 | /* It looks like at least some STA firmware versions reset | |
1035 | * fragmentation threshold back to 2346 after enable command. Restore | |
1036 | * the configured value, if it differs from this default. */ | |
1037 | if (local->fragm_threshold != 2346 && | |
1038 | hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, | |
1039 | local->fragm_threshold)) { | |
1040 | printk(KERN_DEBUG "%s: failed to restore fragmentation " | |
1041 | "threshold (%d) after Port0 enable\n", | |
1042 | dev->name, local->fragm_threshold); | |
1043 | } | |
1044 | ||
9b5cce07 PR |
1045 | /* Some firmwares lose antenna selection settings on reset */ |
1046 | (void) hostap_set_antsel(local); | |
1047 | ||
ff1d2767 JM |
1048 | return res; |
1049 | } | |
1050 | ||
1051 | ||
1052 | static int prism2_get_version_info(struct net_device *dev, u16 rid, | |
1053 | const char *txt) | |
1054 | { | |
1055 | struct hfa384x_comp_ident comp; | |
1056 | struct hostap_interface *iface; | |
1057 | local_info_t *local; | |
1058 | ||
1059 | iface = netdev_priv(dev); | |
1060 | local = iface->local; | |
1061 | ||
1062 | if (local->no_pri) { | |
1063 | /* PRI f/w not yet available - cannot read RIDs */ | |
1064 | return -1; | |
1065 | } | |
1066 | if (hfa384x_get_rid(dev, rid, &comp, sizeof(comp), 1) < 0) { | |
1067 | printk(KERN_DEBUG "Could not get RID for component %s\n", txt); | |
1068 | return -1; | |
1069 | } | |
1070 | ||
1071 | printk(KERN_INFO "%s: %s: id=0x%02x v%d.%d.%d\n", dev->name, txt, | |
1072 | __le16_to_cpu(comp.id), __le16_to_cpu(comp.major), | |
1073 | __le16_to_cpu(comp.minor), __le16_to_cpu(comp.variant)); | |
1074 | return 0; | |
1075 | } | |
1076 | ||
1077 | ||
1078 | static int prism2_setup_rids(struct net_device *dev) | |
1079 | { | |
1080 | struct hostap_interface *iface; | |
1081 | local_info_t *local; | |
1082 | u16 tmp; | |
1083 | int ret = 0; | |
1084 | ||
1085 | iface = netdev_priv(dev); | |
1086 | local = iface->local; | |
1087 | ||
1088 | hostap_set_word(dev, HFA384X_RID_TICKTIME, 2000); | |
1089 | ||
1090 | if (!local->fw_ap) { | |
1091 | tmp = hostap_get_porttype(local); | |
1092 | ret = hostap_set_word(dev, HFA384X_RID_CNFPORTTYPE, tmp); | |
1093 | if (ret) { | |
1094 | printk("%s: Port type setting to %d failed\n", | |
1095 | dev->name, tmp); | |
1096 | goto fail; | |
1097 | } | |
1098 | } | |
1099 | ||
1100 | /* Setting SSID to empty string seems to kill the card in Host AP mode | |
1101 | */ | |
1102 | if (local->iw_mode != IW_MODE_MASTER || local->essid[0] != '\0') { | |
1103 | ret = hostap_set_string(dev, HFA384X_RID_CNFOWNSSID, | |
1104 | local->essid); | |
1105 | if (ret) { | |
1106 | printk("%s: AP own SSID setting failed\n", dev->name); | |
1107 | goto fail; | |
1108 | } | |
1109 | } | |
1110 | ||
1111 | ret = hostap_set_word(dev, HFA384X_RID_CNFMAXDATALEN, | |
1112 | PRISM2_DATA_MAXLEN); | |
1113 | if (ret) { | |
1114 | printk("%s: MAC data length setting to %d failed\n", | |
1115 | dev->name, PRISM2_DATA_MAXLEN); | |
1116 | goto fail; | |
1117 | } | |
1118 | ||
1119 | if (hfa384x_get_rid(dev, HFA384X_RID_CHANNELLIST, &tmp, 2, 1) < 0) { | |
1120 | printk("%s: Channel list read failed\n", dev->name); | |
1121 | ret = -EINVAL; | |
1122 | goto fail; | |
1123 | } | |
1124 | local->channel_mask = __le16_to_cpu(tmp); | |
1125 | ||
1126 | if (local->channel < 1 || local->channel > 14 || | |
1127 | !(local->channel_mask & (1 << (local->channel - 1)))) { | |
1128 | printk(KERN_WARNING "%s: Channel setting out of range " | |
1129 | "(%d)!\n", dev->name, local->channel); | |
1130 | ret = -EBUSY; | |
1131 | goto fail; | |
1132 | } | |
1133 | ||
1134 | ret = hostap_set_word(dev, HFA384X_RID_CNFOWNCHANNEL, local->channel); | |
1135 | if (ret) { | |
1136 | printk("%s: Channel setting to %d failed\n", | |
1137 | dev->name, local->channel); | |
1138 | goto fail; | |
1139 | } | |
1140 | ||
1141 | ret = hostap_set_word(dev, HFA384X_RID_CNFBEACONINT, | |
1142 | local->beacon_int); | |
1143 | if (ret) { | |
1144 | printk("%s: Beacon interval setting to %d failed\n", | |
1145 | dev->name, local->beacon_int); | |
1146 | /* this may fail with Symbol/Lucent firmware */ | |
1147 | if (ret == -ETIMEDOUT) | |
1148 | goto fail; | |
1149 | } | |
1150 | ||
1151 | ret = hostap_set_word(dev, HFA384X_RID_CNFOWNDTIMPERIOD, | |
1152 | local->dtim_period); | |
1153 | if (ret) { | |
1154 | printk("%s: DTIM period setting to %d failed\n", | |
1155 | dev->name, local->dtim_period); | |
1156 | /* this may fail with Symbol/Lucent firmware */ | |
1157 | if (ret == -ETIMEDOUT) | |
1158 | goto fail; | |
1159 | } | |
1160 | ||
1161 | ret = hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE, | |
1162 | local->is_promisc); | |
1163 | if (ret) | |
1164 | printk(KERN_INFO "%s: Setting promiscuous mode (%d) failed\n", | |
1165 | dev->name, local->is_promisc); | |
1166 | ||
1167 | if (!local->fw_ap) { | |
1168 | ret = hostap_set_string(dev, HFA384X_RID_CNFDESIREDSSID, | |
1169 | local->essid); | |
1170 | if (ret) { | |
1171 | printk("%s: Desired SSID setting failed\n", dev->name); | |
1172 | goto fail; | |
1173 | } | |
1174 | } | |
1175 | ||
1176 | /* Setup TXRateControl, defaults to allow use of 1, 2, 5.5, and | |
1177 | * 11 Mbps in automatic TX rate fallback and 1 and 2 Mbps as basic | |
1178 | * rates */ | |
1179 | if (local->tx_rate_control == 0) { | |
1180 | local->tx_rate_control = | |
1181 | HFA384X_RATES_1MBPS | | |
1182 | HFA384X_RATES_2MBPS | | |
1183 | HFA384X_RATES_5MBPS | | |
1184 | HFA384X_RATES_11MBPS; | |
1185 | } | |
1186 | if (local->basic_rates == 0) | |
1187 | local->basic_rates = HFA384X_RATES_1MBPS | HFA384X_RATES_2MBPS; | |
1188 | ||
1189 | if (!local->fw_ap) { | |
1190 | ret = hostap_set_word(dev, HFA384X_RID_TXRATECONTROL, | |
1191 | local->tx_rate_control); | |
1192 | if (ret) { | |
1193 | printk("%s: TXRateControl setting to %d failed\n", | |
1194 | dev->name, local->tx_rate_control); | |
1195 | goto fail; | |
1196 | } | |
1197 | ||
1198 | ret = hostap_set_word(dev, HFA384X_RID_CNFSUPPORTEDRATES, | |
1199 | local->tx_rate_control); | |
1200 | if (ret) { | |
1201 | printk("%s: cnfSupportedRates setting to %d failed\n", | |
1202 | dev->name, local->tx_rate_control); | |
1203 | } | |
1204 | ||
1205 | ret = hostap_set_word(dev, HFA384X_RID_CNFBASICRATES, | |
1206 | local->basic_rates); | |
1207 | if (ret) { | |
1208 | printk("%s: cnfBasicRates setting to %d failed\n", | |
1209 | dev->name, local->basic_rates); | |
1210 | } | |
1211 | ||
1212 | ret = hostap_set_word(dev, HFA384X_RID_CREATEIBSS, 1); | |
1213 | if (ret) { | |
1214 | printk("%s: Create IBSS setting to 1 failed\n", | |
1215 | dev->name); | |
1216 | } | |
1217 | } | |
1218 | ||
1219 | if (local->name_set) | |
1220 | (void) hostap_set_string(dev, HFA384X_RID_CNFOWNNAME, | |
1221 | local->name); | |
1222 | ||
1223 | if (hostap_set_encryption(local)) { | |
1224 | printk(KERN_INFO "%s: could not configure encryption\n", | |
1225 | dev->name); | |
1226 | } | |
1227 | ||
1228 | (void) hostap_set_antsel(local); | |
1229 | ||
1230 | if (hostap_set_roaming(local)) { | |
1231 | printk(KERN_INFO "%s: could not set host roaming\n", | |
1232 | dev->name); | |
1233 | } | |
1234 | ||
1235 | if (local->sta_fw_ver >= PRISM2_FW_VER(1,6,3) && | |
1236 | hostap_set_word(dev, HFA384X_RID_CNFENHSECURITY, local->enh_sec)) | |
1237 | printk(KERN_INFO "%s: cnfEnhSecurity setting to 0x%x failed\n", | |
1238 | dev->name, local->enh_sec); | |
1239 | ||
1240 | /* 32-bit tallies were added in STA f/w 0.8.0, but they were apparently | |
1241 | * not working correctly (last seven counters report bogus values). | |
1242 | * This has been fixed in 0.8.2, so enable 32-bit tallies only | |
1243 | * beginning with that firmware version. Another bug fix for 32-bit | |
1244 | * tallies in 1.4.0; should 16-bit tallies be used for some other | |
1245 | * versions, too? */ | |
1246 | if (local->sta_fw_ver >= PRISM2_FW_VER(0,8,2)) { | |
1247 | if (hostap_set_word(dev, HFA384X_RID_CNFTHIRTY2TALLY, 1)) { | |
1248 | printk(KERN_INFO "%s: cnfThirty2Tally setting " | |
1249 | "failed\n", dev->name); | |
1250 | local->tallies32 = 0; | |
1251 | } else | |
1252 | local->tallies32 = 1; | |
1253 | } else | |
1254 | local->tallies32 = 0; | |
1255 | ||
1256 | hostap_set_auth_algs(local); | |
1257 | ||
1258 | if (hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, | |
1259 | local->fragm_threshold)) { | |
1260 | printk(KERN_INFO "%s: setting FragmentationThreshold to %d " | |
1261 | "failed\n", dev->name, local->fragm_threshold); | |
1262 | } | |
1263 | ||
1264 | if (hostap_set_word(dev, HFA384X_RID_RTSTHRESHOLD, | |
1265 | local->rts_threshold)) { | |
1266 | printk(KERN_INFO "%s: setting RTSThreshold to %d failed\n", | |
1267 | dev->name, local->rts_threshold); | |
1268 | } | |
1269 | ||
1270 | if (local->manual_retry_count >= 0 && | |
1271 | hostap_set_word(dev, HFA384X_RID_CNFALTRETRYCOUNT, | |
1272 | local->manual_retry_count)) { | |
1273 | printk(KERN_INFO "%s: setting cnfAltRetryCount to %d failed\n", | |
1274 | dev->name, local->manual_retry_count); | |
1275 | } | |
1276 | ||
1277 | if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1) && | |
1278 | hfa384x_get_rid(dev, HFA384X_RID_CNFDBMADJUST, &tmp, 2, 1) == 2) { | |
1279 | local->rssi_to_dBm = le16_to_cpu(tmp); | |
1280 | } | |
1281 | ||
1282 | if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->wpa && | |
1283 | hostap_set_word(dev, HFA384X_RID_SSNHANDLINGMODE, 1)) { | |
1284 | printk(KERN_INFO "%s: setting ssnHandlingMode to 1 failed\n", | |
1285 | dev->name); | |
1286 | } | |
1287 | ||
1288 | if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->generic_elem && | |
1289 | hfa384x_set_rid(dev, HFA384X_RID_GENERICELEMENT, | |
1290 | local->generic_elem, local->generic_elem_len)) { | |
1291 | printk(KERN_INFO "%s: setting genericElement failed\n", | |
1292 | dev->name); | |
1293 | } | |
1294 | ||
1295 | fail: | |
1296 | return ret; | |
1297 | } | |
1298 | ||
1299 | ||
1300 | static int prism2_hw_init(struct net_device *dev, int initial) | |
1301 | { | |
1302 | struct hostap_interface *iface; | |
1303 | local_info_t *local; | |
1304 | int ret, first = 1; | |
1305 | unsigned long start, delay; | |
1306 | ||
1307 | PDEBUG(DEBUG_FLOW, "prism2_hw_init()\n"); | |
1308 | ||
1309 | iface = netdev_priv(dev); | |
1310 | local = iface->local; | |
1311 | ||
1312 | clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits); | |
1313 | ||
1314 | init: | |
1315 | /* initialize HFA 384x */ | |
1316 | ret = hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_INIT, 0); | |
1317 | if (ret) { | |
1318 | printk(KERN_INFO "%s: first command failed - assuming card " | |
1319 | "does not have primary firmware\n", dev_info); | |
1320 | } | |
1321 | ||
1322 | if (first && (HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { | |
1323 | /* EvStat has Cmd bit set in some cases, so retry once if no | |
1324 | * wait was needed */ | |
1325 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); | |
1326 | printk(KERN_DEBUG "%s: init command completed too quickly - " | |
1327 | "retrying\n", dev->name); | |
1328 | first = 0; | |
1329 | goto init; | |
1330 | } | |
1331 | ||
1332 | start = jiffies; | |
1333 | delay = jiffies + HFA384X_INIT_TIMEOUT; | |
1334 | while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && | |
1335 | time_before(jiffies, delay)) | |
1336 | yield(); | |
1337 | if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { | |
1338 | printk(KERN_DEBUG "%s: assuming no Primary image in " | |
1339 | "flash - card initialization not completed\n", | |
1340 | dev_info); | |
1341 | local->no_pri = 1; | |
1342 | #ifdef PRISM2_DOWNLOAD_SUPPORT | |
1343 | if (local->sram_type == -1) | |
1344 | local->sram_type = prism2_get_ram_size(local); | |
1345 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ | |
1346 | return 1; | |
1347 | } | |
1348 | local->no_pri = 0; | |
1349 | printk(KERN_DEBUG "prism2_hw_init: initialized in %lu ms\n", | |
1350 | (jiffies - start) * 1000 / HZ); | |
1351 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); | |
1352 | return 0; | |
1353 | } | |
1354 | ||
1355 | ||
1356 | static int prism2_hw_init2(struct net_device *dev, int initial) | |
1357 | { | |
1358 | struct hostap_interface *iface; | |
1359 | local_info_t *local; | |
1360 | int i; | |
1361 | ||
1362 | iface = netdev_priv(dev); | |
1363 | local = iface->local; | |
1364 | ||
1365 | #ifdef PRISM2_DOWNLOAD_SUPPORT | |
1366 | kfree(local->pda); | |
1367 | if (local->no_pri) | |
1368 | local->pda = NULL; | |
1369 | else | |
1370 | local->pda = prism2_read_pda(dev); | |
1371 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ | |
1372 | ||
1373 | hfa384x_disable_interrupts(dev); | |
1374 | ||
1375 | #ifndef final_version | |
1376 | HFA384X_OUTW(HFA384X_MAGIC, HFA384X_SWSUPPORT0_OFF); | |
1377 | if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { | |
1378 | printk("SWSUPPORT0 write/read failed: %04X != %04X\n", | |
1379 | HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC); | |
1380 | goto failed; | |
1381 | } | |
1382 | #endif | |
1383 | ||
1384 | if (initial || local->pri_only) { | |
1385 | hfa384x_events_only_cmd(dev); | |
1386 | /* get card version information */ | |
1387 | if (prism2_get_version_info(dev, HFA384X_RID_NICID, "NIC") || | |
1388 | prism2_get_version_info(dev, HFA384X_RID_PRIID, "PRI")) { | |
1389 | hfa384x_disable_interrupts(dev); | |
1390 | goto failed; | |
1391 | } | |
1392 | ||
1393 | if (prism2_get_version_info(dev, HFA384X_RID_STAID, "STA")) { | |
1394 | printk(KERN_DEBUG "%s: Failed to read STA f/w version " | |
1395 | "- only Primary f/w present\n", dev->name); | |
1396 | local->pri_only = 1; | |
1397 | return 0; | |
1398 | } | |
1399 | local->pri_only = 0; | |
1400 | hfa384x_disable_interrupts(dev); | |
1401 | } | |
1402 | ||
1403 | /* FIX: could convert allocate_fid to use sleeping CmdCompl wait and | |
1404 | * enable interrupts before this. This would also require some sort of | |
1405 | * sleeping AllocEv waiting */ | |
1406 | ||
1407 | /* allocate TX FIDs */ | |
1408 | local->txfid_len = PRISM2_TXFID_LEN; | |
1409 | for (i = 0; i < PRISM2_TXFID_COUNT; i++) { | |
1410 | local->txfid[i] = hfa384x_allocate_fid(dev, local->txfid_len); | |
1411 | if (local->txfid[i] == 0xffff && local->txfid_len > 1600) { | |
1412 | local->txfid[i] = hfa384x_allocate_fid(dev, 1600); | |
1413 | if (local->txfid[i] != 0xffff) { | |
1414 | printk(KERN_DEBUG "%s: Using shorter TX FID " | |
1415 | "(1600 bytes)\n", dev->name); | |
1416 | local->txfid_len = 1600; | |
1417 | } | |
1418 | } | |
1419 | if (local->txfid[i] == 0xffff) | |
1420 | goto failed; | |
1421 | local->intransmitfid[i] = PRISM2_TXFID_EMPTY; | |
1422 | } | |
1423 | ||
1424 | hfa384x_events_only_cmd(dev); | |
1425 | ||
1426 | if (initial) { | |
1427 | struct list_head *ptr; | |
1428 | prism2_check_sta_fw_version(local); | |
1429 | ||
1430 | if (hfa384x_get_rid(dev, HFA384X_RID_CNFOWNMACADDR, | |
1431 | &dev->dev_addr, 6, 1) < 0) { | |
1432 | printk("%s: could not get own MAC address\n", | |
1433 | dev->name); | |
1434 | } | |
1435 | list_for_each(ptr, &local->hostap_interfaces) { | |
1436 | iface = list_entry(ptr, struct hostap_interface, list); | |
1437 | memcpy(iface->dev->dev_addr, dev->dev_addr, ETH_ALEN); | |
1438 | } | |
1439 | } else if (local->fw_ap) | |
1440 | prism2_check_sta_fw_version(local); | |
1441 | ||
1442 | prism2_setup_rids(dev); | |
1443 | ||
1444 | /* MAC is now configured, but port 0 is not yet enabled */ | |
1445 | return 0; | |
1446 | ||
1447 | failed: | |
1448 | if (!local->no_pri) | |
1449 | printk(KERN_WARNING "%s: Initialization failed\n", dev_info); | |
1450 | return 1; | |
1451 | } | |
1452 | ||
1453 | ||
1454 | static int prism2_hw_enable(struct net_device *dev, int initial) | |
1455 | { | |
1456 | struct hostap_interface *iface; | |
1457 | local_info_t *local; | |
1458 | int was_resetting; | |
1459 | ||
1460 | iface = netdev_priv(dev); | |
1461 | local = iface->local; | |
1462 | was_resetting = local->hw_resetting; | |
1463 | ||
1464 | if (hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, NULL, NULL)) { | |
1465 | printk("%s: MAC port 0 enabling failed\n", dev->name); | |
1466 | return 1; | |
1467 | } | |
1468 | ||
1469 | local->hw_ready = 1; | |
1470 | local->hw_reset_tries = 0; | |
1471 | local->hw_resetting = 0; | |
1472 | hfa384x_enable_interrupts(dev); | |
1473 | ||
1474 | /* at least D-Link DWL-650 seems to require additional port reset | |
1475 | * before it starts acting as an AP, so reset port automatically | |
1476 | * here just in case */ | |
1477 | if (initial && prism2_reset_port(dev)) { | |
1478 | printk("%s: MAC port 0 reseting failed\n", dev->name); | |
1479 | return 1; | |
1480 | } | |
1481 | ||
1482 | if (was_resetting && netif_queue_stopped(dev)) { | |
1483 | /* If hw_reset() was called during pending transmit, netif | |
1484 | * queue was stopped. Wake it up now since the wlan card has | |
1485 | * been resetted. */ | |
1486 | netif_wake_queue(dev); | |
1487 | } | |
1488 | ||
1489 | return 0; | |
1490 | } | |
1491 | ||
1492 | ||
1493 | static int prism2_hw_config(struct net_device *dev, int initial) | |
1494 | { | |
1495 | struct hostap_interface *iface; | |
1496 | local_info_t *local; | |
1497 | ||
1498 | iface = netdev_priv(dev); | |
1499 | local = iface->local; | |
1500 | ||
1501 | if (local->hw_downloading) | |
1502 | return 1; | |
1503 | ||
1504 | if (prism2_hw_init(dev, initial)) { | |
1505 | return local->no_pri ? 0 : 1; | |
1506 | } | |
1507 | ||
1508 | if (prism2_hw_init2(dev, initial)) | |
1509 | return 1; | |
1510 | ||
1511 | /* Enable firmware if secondary image is loaded and at least one of the | |
1512 | * netdevices is up. */ | |
1513 | if (!local->pri_only && | |
1514 | (initial == 0 || (initial == 2 && local->num_dev_open > 0))) { | |
1515 | if (!local->dev_enabled) | |
1516 | prism2_callback(local, PRISM2_CALLBACK_ENABLE); | |
1517 | local->dev_enabled = 1; | |
1518 | return prism2_hw_enable(dev, initial); | |
1519 | } | |
1520 | ||
1521 | return 0; | |
1522 | } | |
1523 | ||
1524 | ||
1525 | static void prism2_hw_shutdown(struct net_device *dev, int no_disable) | |
1526 | { | |
1527 | struct hostap_interface *iface; | |
1528 | local_info_t *local; | |
1529 | ||
1530 | iface = netdev_priv(dev); | |
1531 | local = iface->local; | |
1532 | ||
1533 | /* Allow only command completion events during disable */ | |
1534 | hfa384x_events_only_cmd(dev); | |
1535 | ||
1536 | local->hw_ready = 0; | |
1537 | if (local->dev_enabled) | |
1538 | prism2_callback(local, PRISM2_CALLBACK_DISABLE); | |
1539 | local->dev_enabled = 0; | |
1540 | ||
1541 | if (local->func->card_present && !local->func->card_present(local)) { | |
1542 | printk(KERN_DEBUG "%s: card already removed or not configured " | |
1543 | "during shutdown\n", dev->name); | |
1544 | return; | |
1545 | } | |
1546 | ||
1547 | if ((no_disable & HOSTAP_HW_NO_DISABLE) == 0 && | |
1548 | hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, NULL, NULL)) | |
1549 | printk(KERN_WARNING "%s: Shutdown failed\n", dev_info); | |
1550 | ||
1551 | hfa384x_disable_interrupts(dev); | |
1552 | ||
1553 | if (no_disable & HOSTAP_HW_ENABLE_CMDCOMPL) | |
1554 | hfa384x_events_only_cmd(dev); | |
1555 | else | |
1556 | prism2_clear_cmd_queue(local); | |
1557 | } | |
1558 | ||
1559 | ||
1560 | static void prism2_hw_reset(struct net_device *dev) | |
1561 | { | |
1562 | struct hostap_interface *iface; | |
1563 | local_info_t *local; | |
1564 | ||
1565 | #if 0 | |
1566 | static long last_reset = 0; | |
1567 | ||
1568 | /* do not reset card more than once per second to avoid ending up in a | |
1569 | * busy loop reseting the card */ | |
1570 | if (time_before_eq(jiffies, last_reset + HZ)) | |
1571 | return; | |
1572 | last_reset = jiffies; | |
1573 | #endif | |
1574 | ||
1575 | iface = netdev_priv(dev); | |
1576 | local = iface->local; | |
1577 | ||
1578 | if (in_interrupt()) { | |
1579 | printk(KERN_DEBUG "%s: driver bug - prism2_hw_reset() called " | |
1580 | "in interrupt context\n", dev->name); | |
1581 | return; | |
1582 | } | |
1583 | ||
1584 | if (local->hw_downloading) | |
1585 | return; | |
1586 | ||
1587 | if (local->hw_resetting) { | |
1588 | printk(KERN_WARNING "%s: %s: already resetting card - " | |
1589 | "ignoring reset request\n", dev_info, dev->name); | |
1590 | return; | |
1591 | } | |
1592 | ||
1593 | local->hw_reset_tries++; | |
1594 | if (local->hw_reset_tries > 10) { | |
1595 | printk(KERN_WARNING "%s: too many reset tries, skipping\n", | |
1596 | dev->name); | |
1597 | return; | |
1598 | } | |
1599 | ||
1600 | printk(KERN_WARNING "%s: %s: resetting card\n", dev_info, dev->name); | |
1601 | hfa384x_disable_interrupts(dev); | |
1602 | local->hw_resetting = 1; | |
1603 | if (local->func->cor_sreset) { | |
1604 | /* Host system seems to hang in some cases with high traffic | |
1605 | * load or shared interrupts during COR sreset. Disable shared | |
1606 | * interrupts during reset to avoid these crashes. COS sreset | |
1607 | * takes quite a long time, so it is unfortunate that this | |
1608 | * seems to be needed. Anyway, I do not know of any better way | |
1609 | * of avoiding the crash. */ | |
1610 | disable_irq(dev->irq); | |
1611 | local->func->cor_sreset(local); | |
1612 | enable_irq(dev->irq); | |
1613 | } | |
1614 | prism2_hw_shutdown(dev, 1); | |
1615 | prism2_hw_config(dev, 0); | |
1616 | local->hw_resetting = 0; | |
1617 | ||
1618 | #ifdef PRISM2_DOWNLOAD_SUPPORT | |
1619 | if (local->dl_pri) { | |
1620 | printk(KERN_DEBUG "%s: persistent download of primary " | |
1621 | "firmware\n", dev->name); | |
1622 | if (prism2_download_genesis(local, local->dl_pri) < 0) | |
1623 | printk(KERN_WARNING "%s: download (PRI) failed\n", | |
1624 | dev->name); | |
1625 | } | |
1626 | ||
1627 | if (local->dl_sec) { | |
1628 | printk(KERN_DEBUG "%s: persistent download of secondary " | |
1629 | "firmware\n", dev->name); | |
1630 | if (prism2_download_volatile(local, local->dl_sec) < 0) | |
1631 | printk(KERN_WARNING "%s: download (SEC) failed\n", | |
1632 | dev->name); | |
1633 | } | |
1634 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ | |
1635 | ||
1636 | /* TODO: restore beacon TIM bits for STAs that have buffered frames */ | |
1637 | } | |
1638 | ||
1639 | ||
1640 | static void prism2_schedule_reset(local_info_t *local) | |
1641 | { | |
1642 | schedule_work(&local->reset_queue); | |
1643 | } | |
1644 | ||
1645 | ||
1646 | /* Called only as scheduled task after noticing card timeout in interrupt | |
1647 | * context */ | |
c4028958 | 1648 | static void handle_reset_queue(struct work_struct *work) |
ff1d2767 | 1649 | { |
c4028958 | 1650 | local_info_t *local = container_of(work, local_info_t, reset_queue); |
ff1d2767 JM |
1651 | |
1652 | printk(KERN_DEBUG "%s: scheduled card reset\n", local->dev->name); | |
1653 | prism2_hw_reset(local->dev); | |
1654 | ||
1655 | if (netif_queue_stopped(local->dev)) { | |
1656 | int i; | |
1657 | ||
1658 | for (i = 0; i < PRISM2_TXFID_COUNT; i++) | |
1659 | if (local->intransmitfid[i] == PRISM2_TXFID_EMPTY) { | |
1660 | PDEBUG(DEBUG_EXTRA, "prism2_tx_timeout: " | |
1661 | "wake up queue\n"); | |
1662 | netif_wake_queue(local->dev); | |
1663 | break; | |
1664 | } | |
1665 | } | |
1666 | } | |
1667 | ||
1668 | ||
1669 | static int prism2_get_txfid_idx(local_info_t *local) | |
1670 | { | |
1671 | int idx, end; | |
1672 | unsigned long flags; | |
1673 | ||
1674 | spin_lock_irqsave(&local->txfidlock, flags); | |
1675 | end = idx = local->next_txfid; | |
1676 | do { | |
1677 | if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { | |
1678 | local->intransmitfid[idx] = PRISM2_TXFID_RESERVED; | |
1679 | spin_unlock_irqrestore(&local->txfidlock, flags); | |
1680 | return idx; | |
1681 | } | |
1682 | idx++; | |
1683 | if (idx >= PRISM2_TXFID_COUNT) | |
1684 | idx = 0; | |
1685 | } while (idx != end); | |
1686 | spin_unlock_irqrestore(&local->txfidlock, flags); | |
1687 | ||
1688 | PDEBUG(DEBUG_EXTRA2, "prism2_get_txfid_idx: no room in txfid buf: " | |
1689 | "packet dropped\n"); | |
1690 | local->stats.tx_dropped++; | |
1691 | ||
1692 | return -1; | |
1693 | } | |
1694 | ||
1695 | ||
1696 | /* Called only from hardware IRQ */ | |
b15eff26 | 1697 | static void prism2_transmit_cb(struct net_device *dev, long context, |
ff1d2767 JM |
1698 | u16 resp0, u16 res) |
1699 | { | |
1700 | struct hostap_interface *iface; | |
1701 | local_info_t *local; | |
1702 | int idx = (int) context; | |
1703 | ||
1704 | iface = netdev_priv(dev); | |
1705 | local = iface->local; | |
1706 | ||
1707 | if (res) { | |
1708 | printk(KERN_DEBUG "%s: prism2_transmit_cb - res=0x%02x\n", | |
1709 | dev->name, res); | |
1710 | return; | |
1711 | } | |
1712 | ||
1713 | if (idx < 0 || idx >= PRISM2_TXFID_COUNT) { | |
1714 | printk(KERN_DEBUG "%s: prism2_transmit_cb called with invalid " | |
1715 | "idx=%d\n", dev->name, idx); | |
1716 | return; | |
1717 | } | |
1718 | ||
1719 | if (!test_and_clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { | |
1720 | printk(KERN_DEBUG "%s: driver bug: prism2_transmit_cb called " | |
1721 | "with no pending transmit\n", dev->name); | |
1722 | } | |
1723 | ||
1724 | if (netif_queue_stopped(dev)) { | |
1725 | /* ready for next TX, so wake up queue that was stopped in | |
1726 | * prism2_transmit() */ | |
1727 | netif_wake_queue(dev); | |
1728 | } | |
1729 | ||
1730 | spin_lock(&local->txfidlock); | |
1731 | ||
1732 | /* With reclaim, Resp0 contains new txfid for transmit; the old txfid | |
1733 | * will be automatically allocated for the next TX frame */ | |
1734 | local->intransmitfid[idx] = resp0; | |
1735 | ||
1736 | PDEBUG(DEBUG_FID, "%s: prism2_transmit_cb: txfid[%d]=0x%04x, " | |
1737 | "resp0=0x%04x, transmit_txfid=0x%04x\n", | |
1738 | dev->name, idx, local->txfid[idx], | |
1739 | resp0, local->intransmitfid[local->next_txfid]); | |
1740 | ||
1741 | idx++; | |
1742 | if (idx >= PRISM2_TXFID_COUNT) | |
1743 | idx = 0; | |
1744 | local->next_txfid = idx; | |
1745 | ||
1746 | /* check if all TX buffers are occupied */ | |
1747 | do { | |
1748 | if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { | |
1749 | spin_unlock(&local->txfidlock); | |
1750 | return; | |
1751 | } | |
1752 | idx++; | |
1753 | if (idx >= PRISM2_TXFID_COUNT) | |
1754 | idx = 0; | |
1755 | } while (idx != local->next_txfid); | |
1756 | spin_unlock(&local->txfidlock); | |
1757 | ||
1758 | /* no empty TX buffers, stop queue */ | |
1759 | netif_stop_queue(dev); | |
1760 | } | |
1761 | ||
1762 | ||
1763 | /* Called only from software IRQ if PCI bus master is not used (with bus master | |
1764 | * this can be called both from software and hardware IRQ) */ | |
1765 | static int prism2_transmit(struct net_device *dev, int idx) | |
1766 | { | |
1767 | struct hostap_interface *iface; | |
1768 | local_info_t *local; | |
1769 | int res; | |
1770 | ||
1771 | iface = netdev_priv(dev); | |
1772 | local = iface->local; | |
1773 | ||
1774 | /* The driver tries to stop netif queue so that there would not be | |
1775 | * more than one attempt to transmit frames going on; check that this | |
1776 | * is really the case */ | |
1777 | ||
1778 | if (test_and_set_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { | |
1779 | printk(KERN_DEBUG "%s: driver bug - prism2_transmit() called " | |
1780 | "when previous TX was pending\n", dev->name); | |
1781 | return -1; | |
1782 | } | |
1783 | ||
1784 | /* stop the queue for the time that transmit is pending */ | |
1785 | netif_stop_queue(dev); | |
1786 | ||
1787 | /* transmit packet */ | |
1788 | res = hfa384x_cmd_callback( | |
1789 | dev, | |
1790 | HFA384X_CMDCODE_TRANSMIT | HFA384X_CMD_TX_RECLAIM, | |
1791 | local->txfid[idx], | |
b15eff26 | 1792 | prism2_transmit_cb, (long) idx); |
ff1d2767 JM |
1793 | |
1794 | if (res) { | |
1795 | struct net_device_stats *stats; | |
1796 | printk(KERN_DEBUG "%s: prism2_transmit: CMDCODE_TRANSMIT " | |
1797 | "failed (res=%d)\n", dev->name, res); | |
1798 | stats = hostap_get_stats(dev); | |
1799 | stats->tx_dropped++; | |
1800 | netif_wake_queue(dev); | |
1801 | return -1; | |
1802 | } | |
1803 | dev->trans_start = jiffies; | |
1804 | ||
1805 | /* Since we did not wait for command completion, the card continues | |
1806 | * to process on the background and we will finish handling when | |
1807 | * command completion event is handled (prism2_cmd_ev() function) */ | |
1808 | ||
1809 | return 0; | |
1810 | } | |
1811 | ||
1812 | ||
ff1d2767 JM |
1813 | /* Send IEEE 802.11 frame (convert the header into Prism2 TX descriptor and |
1814 | * send the payload with this descriptor) */ | |
1815 | /* Called only from software IRQ */ | |
1816 | static int prism2_tx_80211(struct sk_buff *skb, struct net_device *dev) | |
1817 | { | |
1818 | struct hostap_interface *iface; | |
1819 | local_info_t *local; | |
1820 | struct hfa384x_tx_frame txdesc; | |
ff1d2767 JM |
1821 | struct hostap_skb_tx_data *meta; |
1822 | int hdr_len, data_len, idx, res, ret = -1; | |
1823 | u16 tx_control, fc; | |
1824 | ||
1825 | iface = netdev_priv(dev); | |
1826 | local = iface->local; | |
1827 | ||
1828 | meta = (struct hostap_skb_tx_data *) skb->cb; | |
ff1d2767 JM |
1829 | |
1830 | prism2_callback(local, PRISM2_CALLBACK_TX_START); | |
1831 | ||
1832 | if ((local->func->card_present && !local->func->card_present(local)) || | |
1833 | !local->hw_ready || local->hw_downloading || local->pri_only) { | |
1834 | if (net_ratelimit()) { | |
1835 | printk(KERN_DEBUG "%s: prism2_tx_80211: hw not ready -" | |
1836 | " skipping\n", dev->name); | |
1837 | } | |
1838 | goto fail; | |
1839 | } | |
1840 | ||
1841 | memset(&txdesc, 0, sizeof(txdesc)); | |
1842 | ||
1843 | /* skb->data starts with txdesc->frame_control */ | |
1844 | hdr_len = 24; | |
1845 | memcpy(&txdesc.frame_control, skb->data, hdr_len); | |
1846 | fc = le16_to_cpu(txdesc.frame_control); | |
4339d328 | 1847 | if (WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA && |
b2f4a2e3 JM |
1848 | (fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS) && |
1849 | skb->len >= 30) { | |
ff1d2767 JM |
1850 | /* Addr4 */ |
1851 | memcpy(txdesc.addr4, skb->data + hdr_len, ETH_ALEN); | |
1852 | hdr_len += ETH_ALEN; | |
1853 | } | |
1854 | ||
1855 | tx_control = local->tx_control; | |
1856 | if (meta->tx_cb_idx) { | |
1857 | tx_control |= HFA384X_TX_CTRL_TX_OK; | |
1858 | txdesc.sw_support = cpu_to_le16(meta->tx_cb_idx); | |
1859 | } | |
1860 | txdesc.tx_control = cpu_to_le16(tx_control); | |
1861 | txdesc.tx_rate = meta->rate; | |
1862 | ||
1863 | data_len = skb->len - hdr_len; | |
1864 | txdesc.data_len = cpu_to_le16(data_len); | |
1865 | txdesc.len = cpu_to_be16(data_len); | |
1866 | ||
1867 | idx = prism2_get_txfid_idx(local); | |
1868 | if (idx < 0) | |
1869 | goto fail; | |
1870 | ||
1871 | if (local->frame_dump & PRISM2_DUMP_TX_HDR) | |
1872 | hostap_dump_tx_header(dev->name, &txdesc); | |
1873 | ||
1874 | spin_lock(&local->baplock); | |
1875 | res = hfa384x_setup_bap(dev, BAP0, local->txfid[idx], 0); | |
1876 | ||
ff1d2767 JM |
1877 | if (!res) |
1878 | res = hfa384x_to_bap(dev, BAP0, &txdesc, sizeof(txdesc)); | |
1879 | if (!res) | |
1880 | res = hfa384x_to_bap(dev, BAP0, skb->data + hdr_len, | |
1881 | skb->len - hdr_len); | |
1882 | spin_unlock(&local->baplock); | |
1883 | ||
1884 | if (!res) | |
1885 | res = prism2_transmit(dev, idx); | |
1886 | if (res) { | |
1887 | printk(KERN_DEBUG "%s: prism2_tx_80211 - to BAP0 failed\n", | |
1888 | dev->name); | |
1889 | local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; | |
1890 | schedule_work(&local->reset_queue); | |
1891 | goto fail; | |
1892 | } | |
1893 | ||
1894 | ret = 0; | |
1895 | ||
1896 | fail: | |
1897 | prism2_callback(local, PRISM2_CALLBACK_TX_END); | |
1898 | return ret; | |
1899 | } | |
1900 | ||
1901 | ||
1902 | /* Some SMP systems have reported number of odd errors with hostap_pci. fid | |
1903 | * register has changed values between consecutive reads for an unknown reason. | |
1904 | * This should really not happen, so more debugging is needed. This test | |
1905 | * version is a big slower, but it will detect most of such register changes | |
1906 | * and will try to get the correct fid eventually. */ | |
1907 | #define EXTRA_FID_READ_TESTS | |
1908 | ||
858119e1 | 1909 | static u16 prism2_read_fid_reg(struct net_device *dev, u16 reg) |
ff1d2767 JM |
1910 | { |
1911 | #ifdef EXTRA_FID_READ_TESTS | |
1912 | u16 val, val2, val3; | |
1913 | int i; | |
1914 | ||
1915 | for (i = 0; i < 10; i++) { | |
1916 | val = HFA384X_INW(reg); | |
1917 | val2 = HFA384X_INW(reg); | |
1918 | val3 = HFA384X_INW(reg); | |
1919 | ||
1920 | if (val == val2 && val == val3) | |
1921 | return val; | |
1922 | ||
1923 | printk(KERN_DEBUG "%s: detected fid change (try=%d, reg=%04x):" | |
1924 | " %04x %04x %04x\n", | |
1925 | dev->name, i, reg, val, val2, val3); | |
1926 | if ((val == val2 || val == val3) && val != 0) | |
1927 | return val; | |
1928 | if (val2 == val3 && val2 != 0) | |
1929 | return val2; | |
1930 | } | |
1931 | printk(KERN_WARNING "%s: Uhhuh.. could not read good fid from reg " | |
1932 | "%04x (%04x %04x %04x)\n", dev->name, reg, val, val2, val3); | |
1933 | return val; | |
1934 | #else /* EXTRA_FID_READ_TESTS */ | |
1935 | return HFA384X_INW(reg); | |
1936 | #endif /* EXTRA_FID_READ_TESTS */ | |
1937 | } | |
1938 | ||
1939 | ||
1940 | /* Called only as a tasklet (software IRQ) */ | |
1941 | static void prism2_rx(local_info_t *local) | |
1942 | { | |
1943 | struct net_device *dev = local->dev; | |
1944 | int res, rx_pending = 0; | |
1945 | u16 len, hdr_len, rxfid, status, macport; | |
1946 | struct net_device_stats *stats; | |
1947 | struct hfa384x_rx_frame rxdesc; | |
1948 | struct sk_buff *skb = NULL; | |
1949 | ||
1950 | prism2_callback(local, PRISM2_CALLBACK_RX_START); | |
1951 | stats = hostap_get_stats(dev); | |
1952 | ||
1953 | rxfid = prism2_read_fid_reg(dev, HFA384X_RXFID_OFF); | |
1954 | #ifndef final_version | |
1955 | if (rxfid == 0) { | |
1956 | rxfid = HFA384X_INW(HFA384X_RXFID_OFF); | |
1957 | printk(KERN_DEBUG "prism2_rx: rxfid=0 (next 0x%04x)\n", | |
1958 | rxfid); | |
1959 | if (rxfid == 0) { | |
1960 | schedule_work(&local->reset_queue); | |
1961 | goto rx_dropped; | |
1962 | } | |
1963 | /* try to continue with the new rxfid value */ | |
1964 | } | |
1965 | #endif | |
1966 | ||
1967 | spin_lock(&local->baplock); | |
1968 | res = hfa384x_setup_bap(dev, BAP0, rxfid, 0); | |
1969 | if (!res) | |
1970 | res = hfa384x_from_bap(dev, BAP0, &rxdesc, sizeof(rxdesc)); | |
1971 | ||
1972 | if (res) { | |
1973 | spin_unlock(&local->baplock); | |
1974 | printk(KERN_DEBUG "%s: copy from BAP0 failed %d\n", dev->name, | |
1975 | res); | |
1976 | if (res == -ETIMEDOUT) { | |
1977 | schedule_work(&local->reset_queue); | |
1978 | } | |
1979 | goto rx_dropped; | |
1980 | } | |
1981 | ||
1982 | len = le16_to_cpu(rxdesc.data_len); | |
1983 | hdr_len = sizeof(rxdesc); | |
1984 | status = le16_to_cpu(rxdesc.status); | |
1985 | macport = (status >> 8) & 0x07; | |
1986 | ||
1987 | /* Drop frames with too large reported payload length. Monitor mode | |
1988 | * seems to sometimes pass frames (e.g., ctrl::ack) with signed and | |
1989 | * negative value, so allow also values 65522 .. 65534 (-14 .. -2) for | |
1990 | * macport 7 */ | |
1991 | if (len > PRISM2_DATA_MAXLEN + 8 /* WEP */) { | |
1992 | if (macport == 7 && local->iw_mode == IW_MODE_MONITOR) { | |
1993 | if (len >= (u16) -14) { | |
1994 | hdr_len -= 65535 - len; | |
1995 | hdr_len--; | |
1996 | } | |
1997 | len = 0; | |
1998 | } else { | |
1999 | spin_unlock(&local->baplock); | |
2000 | printk(KERN_DEBUG "%s: Received frame with invalid " | |
2001 | "length 0x%04x\n", dev->name, len); | |
2002 | hostap_dump_rx_header(dev->name, &rxdesc); | |
2003 | goto rx_dropped; | |
2004 | } | |
2005 | } | |
2006 | ||
2007 | skb = dev_alloc_skb(len + hdr_len); | |
2008 | if (!skb) { | |
2009 | spin_unlock(&local->baplock); | |
2010 | printk(KERN_DEBUG "%s: RX failed to allocate skb\n", | |
2011 | dev->name); | |
2012 | goto rx_dropped; | |
2013 | } | |
2014 | skb->dev = dev; | |
2015 | memcpy(skb_put(skb, hdr_len), &rxdesc, hdr_len); | |
2016 | ||
ea3f1865 JM |
2017 | if (len > 0) |
2018 | res = hfa384x_from_bap(dev, BAP0, skb_put(skb, len), len); | |
2019 | spin_unlock(&local->baplock); | |
2020 | if (res) { | |
2021 | printk(KERN_DEBUG "%s: RX failed to read " | |
2022 | "frame data\n", dev->name); | |
2023 | goto rx_dropped; | |
ff1d2767 JM |
2024 | } |
2025 | ||
ea3f1865 JM |
2026 | skb_queue_tail(&local->rx_list, skb); |
2027 | tasklet_schedule(&local->rx_tasklet); | |
2028 | ||
ff1d2767 JM |
2029 | rx_exit: |
2030 | prism2_callback(local, PRISM2_CALLBACK_RX_END); | |
2031 | if (!rx_pending) { | |
2032 | HFA384X_OUTW(HFA384X_EV_RX, HFA384X_EVACK_OFF); | |
2033 | } | |
2034 | ||
2035 | return; | |
2036 | ||
2037 | rx_dropped: | |
2038 | stats->rx_dropped++; | |
2039 | if (skb) | |
2040 | dev_kfree_skb(skb); | |
2041 | goto rx_exit; | |
2042 | } | |
2043 | ||
2044 | ||
2045 | /* Called only as a tasklet (software IRQ) */ | |
2046 | static void hostap_rx_skb(local_info_t *local, struct sk_buff *skb) | |
2047 | { | |
2048 | struct hfa384x_rx_frame *rxdesc; | |
2049 | struct net_device *dev = skb->dev; | |
2050 | struct hostap_80211_rx_status stats; | |
2051 | int hdrlen, rx_hdrlen; | |
2052 | ||
2053 | rx_hdrlen = sizeof(*rxdesc); | |
2054 | if (skb->len < sizeof(*rxdesc)) { | |
2055 | /* Allow monitor mode to receive shorter frames */ | |
2056 | if (local->iw_mode == IW_MODE_MONITOR && | |
2057 | skb->len >= sizeof(*rxdesc) - 30) { | |
2058 | rx_hdrlen = skb->len; | |
2059 | } else { | |
2060 | dev_kfree_skb(skb); | |
2061 | return; | |
2062 | } | |
2063 | } | |
2064 | ||
2065 | rxdesc = (struct hfa384x_rx_frame *) skb->data; | |
2066 | ||
2067 | if (local->frame_dump & PRISM2_DUMP_RX_HDR && | |
2068 | skb->len >= sizeof(*rxdesc)) | |
2069 | hostap_dump_rx_header(dev->name, rxdesc); | |
2070 | ||
2071 | if (le16_to_cpu(rxdesc->status) & HFA384X_RX_STATUS_FCSERR && | |
2072 | (!local->monitor_allow_fcserr || | |
2073 | local->iw_mode != IW_MODE_MONITOR)) | |
2074 | goto drop; | |
2075 | ||
2076 | if (skb->len > PRISM2_DATA_MAXLEN) { | |
2077 | printk(KERN_DEBUG "%s: RX: len(%d) > MAX(%d)\n", | |
2078 | dev->name, skb->len, PRISM2_DATA_MAXLEN); | |
2079 | goto drop; | |
2080 | } | |
2081 | ||
2082 | stats.mac_time = le32_to_cpu(rxdesc->time); | |
2083 | stats.signal = rxdesc->signal - local->rssi_to_dBm; | |
2084 | stats.noise = rxdesc->silence - local->rssi_to_dBm; | |
2085 | stats.rate = rxdesc->rate; | |
2086 | ||
2087 | /* Convert Prism2 RX structure into IEEE 802.11 header */ | |
2088 | hdrlen = hostap_80211_get_hdrlen(le16_to_cpu(rxdesc->frame_control)); | |
2089 | if (hdrlen > rx_hdrlen) | |
2090 | hdrlen = rx_hdrlen; | |
2091 | ||
2092 | memmove(skb_pull(skb, rx_hdrlen - hdrlen), | |
2093 | &rxdesc->frame_control, hdrlen); | |
2094 | ||
2095 | hostap_80211_rx(dev, skb, &stats); | |
2096 | return; | |
2097 | ||
2098 | drop: | |
2099 | dev_kfree_skb(skb); | |
2100 | } | |
2101 | ||
2102 | ||
2103 | /* Called only as a tasklet (software IRQ) */ | |
2104 | static void hostap_rx_tasklet(unsigned long data) | |
2105 | { | |
2106 | local_info_t *local = (local_info_t *) data; | |
2107 | struct sk_buff *skb; | |
2108 | ||
2109 | while ((skb = skb_dequeue(&local->rx_list)) != NULL) | |
2110 | hostap_rx_skb(local, skb); | |
2111 | } | |
2112 | ||
2113 | ||
2114 | /* Called only from hardware IRQ */ | |
2115 | static void prism2_alloc_ev(struct net_device *dev) | |
2116 | { | |
2117 | struct hostap_interface *iface; | |
2118 | local_info_t *local; | |
2119 | int idx; | |
2120 | u16 fid; | |
2121 | ||
2122 | iface = netdev_priv(dev); | |
2123 | local = iface->local; | |
2124 | ||
2125 | fid = prism2_read_fid_reg(dev, HFA384X_ALLOCFID_OFF); | |
2126 | ||
2127 | PDEBUG(DEBUG_FID, "FID: interrupt: ALLOC - fid=0x%04x\n", fid); | |
2128 | ||
2129 | spin_lock(&local->txfidlock); | |
2130 | idx = local->next_alloc; | |
2131 | ||
2132 | do { | |
2133 | if (local->txfid[idx] == fid) { | |
2134 | PDEBUG(DEBUG_FID, "FID: found matching txfid[%d]\n", | |
2135 | idx); | |
2136 | ||
2137 | #ifndef final_version | |
2138 | if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) | |
2139 | printk("Already released txfid found at idx " | |
2140 | "%d\n", idx); | |
2141 | if (local->intransmitfid[idx] == PRISM2_TXFID_RESERVED) | |
2142 | printk("Already reserved txfid found at idx " | |
2143 | "%d\n", idx); | |
2144 | #endif | |
2145 | local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; | |
2146 | idx++; | |
2147 | local->next_alloc = idx >= PRISM2_TXFID_COUNT ? 0 : | |
2148 | idx; | |
2149 | ||
2150 | if (!test_bit(HOSTAP_BITS_TRANSMIT, &local->bits) && | |
2151 | netif_queue_stopped(dev)) | |
2152 | netif_wake_queue(dev); | |
2153 | ||
2154 | spin_unlock(&local->txfidlock); | |
2155 | return; | |
2156 | } | |
2157 | ||
2158 | idx++; | |
2159 | if (idx >= PRISM2_TXFID_COUNT) | |
2160 | idx = 0; | |
2161 | } while (idx != local->next_alloc); | |
2162 | ||
2163 | printk(KERN_WARNING "%s: could not find matching txfid (0x%04x, new " | |
2164 | "read 0x%04x) for alloc event\n", dev->name, fid, | |
2165 | HFA384X_INW(HFA384X_ALLOCFID_OFF)); | |
2166 | printk(KERN_DEBUG "TXFIDs:"); | |
2167 | for (idx = 0; idx < PRISM2_TXFID_COUNT; idx++) | |
2168 | printk(" %04x[%04x]", local->txfid[idx], | |
2169 | local->intransmitfid[idx]); | |
2170 | printk("\n"); | |
2171 | spin_unlock(&local->txfidlock); | |
2172 | ||
2173 | /* FIX: should probably schedule reset; reference to one txfid was lost | |
2174 | * completely.. Bad things will happen if we run out of txfids | |
2175 | * Actually, this will cause netdev watchdog to notice TX timeout and | |
2176 | * then card reset after all txfids have been leaked. */ | |
2177 | } | |
2178 | ||
2179 | ||
2180 | /* Called only as a tasklet (software IRQ) */ | |
2181 | static void hostap_tx_callback(local_info_t *local, | |
2182 | struct hfa384x_tx_frame *txdesc, int ok, | |
2183 | char *payload) | |
2184 | { | |
2185 | u16 sw_support, hdrlen, len; | |
2186 | struct sk_buff *skb; | |
2187 | struct hostap_tx_callback_info *cb; | |
2188 | ||
2189 | /* Make sure that frame was from us. */ | |
2190 | if (memcmp(txdesc->addr2, local->dev->dev_addr, ETH_ALEN)) { | |
2191 | printk(KERN_DEBUG "%s: TX callback - foreign frame\n", | |
2192 | local->dev->name); | |
2193 | return; | |
2194 | } | |
2195 | ||
2196 | sw_support = le16_to_cpu(txdesc->sw_support); | |
2197 | ||
2198 | spin_lock(&local->lock); | |
2199 | cb = local->tx_callback; | |
2200 | while (cb != NULL && cb->idx != sw_support) | |
2201 | cb = cb->next; | |
2202 | spin_unlock(&local->lock); | |
2203 | ||
2204 | if (cb == NULL) { | |
2205 | printk(KERN_DEBUG "%s: could not find TX callback (idx %d)\n", | |
2206 | local->dev->name, sw_support); | |
2207 | return; | |
2208 | } | |
2209 | ||
2210 | hdrlen = hostap_80211_get_hdrlen(le16_to_cpu(txdesc->frame_control)); | |
2211 | len = le16_to_cpu(txdesc->data_len); | |
2212 | skb = dev_alloc_skb(hdrlen + len); | |
2213 | if (skb == NULL) { | |
2214 | printk(KERN_DEBUG "%s: hostap_tx_callback failed to allocate " | |
2215 | "skb\n", local->dev->name); | |
2216 | return; | |
2217 | } | |
2218 | ||
2219 | memcpy(skb_put(skb, hdrlen), (void *) &txdesc->frame_control, hdrlen); | |
2220 | if (payload) | |
2221 | memcpy(skb_put(skb, len), payload, len); | |
2222 | ||
2223 | skb->dev = local->dev; | |
2224 | skb->mac.raw = skb->data; | |
2225 | ||
2226 | cb->func(skb, ok, cb->data); | |
2227 | } | |
2228 | ||
2229 | ||
2230 | /* Called only as a tasklet (software IRQ) */ | |
2231 | static int hostap_tx_compl_read(local_info_t *local, int error, | |
2232 | struct hfa384x_tx_frame *txdesc, | |
2233 | char **payload) | |
2234 | { | |
2235 | u16 fid, len; | |
2236 | int res, ret = 0; | |
2237 | struct net_device *dev = local->dev; | |
2238 | ||
2239 | fid = prism2_read_fid_reg(dev, HFA384X_TXCOMPLFID_OFF); | |
2240 | ||
2241 | PDEBUG(DEBUG_FID, "interrupt: TX (err=%d) - fid=0x%04x\n", fid, error); | |
2242 | ||
2243 | spin_lock(&local->baplock); | |
2244 | res = hfa384x_setup_bap(dev, BAP0, fid, 0); | |
2245 | if (!res) | |
2246 | res = hfa384x_from_bap(dev, BAP0, txdesc, sizeof(*txdesc)); | |
2247 | if (res) { | |
2248 | PDEBUG(DEBUG_EXTRA, "%s: TX (err=%d) - fid=0x%04x - could not " | |
2249 | "read txdesc\n", dev->name, error, fid); | |
2250 | if (res == -ETIMEDOUT) { | |
2251 | schedule_work(&local->reset_queue); | |
2252 | } | |
2253 | ret = -1; | |
2254 | goto fail; | |
2255 | } | |
2256 | if (txdesc->sw_support) { | |
2257 | len = le16_to_cpu(txdesc->data_len); | |
2258 | if (len < PRISM2_DATA_MAXLEN) { | |
2259 | *payload = (char *) kmalloc(len, GFP_ATOMIC); | |
2260 | if (*payload == NULL || | |
2261 | hfa384x_from_bap(dev, BAP0, *payload, len)) { | |
2262 | PDEBUG(DEBUG_EXTRA, "%s: could not read TX " | |
2263 | "frame payload\n", dev->name); | |
2264 | kfree(*payload); | |
2265 | *payload = NULL; | |
2266 | ret = -1; | |
2267 | goto fail; | |
2268 | } | |
2269 | } | |
2270 | } | |
2271 | ||
2272 | fail: | |
2273 | spin_unlock(&local->baplock); | |
2274 | ||
2275 | return ret; | |
2276 | } | |
2277 | ||
2278 | ||
2279 | /* Called only as a tasklet (software IRQ) */ | |
2280 | static void prism2_tx_ev(local_info_t *local) | |
2281 | { | |
2282 | struct net_device *dev = local->dev; | |
2283 | char *payload = NULL; | |
2284 | struct hfa384x_tx_frame txdesc; | |
2285 | ||
2286 | if (hostap_tx_compl_read(local, 0, &txdesc, &payload)) | |
2287 | goto fail; | |
2288 | ||
2289 | if (local->frame_dump & PRISM2_DUMP_TX_HDR) { | |
2290 | PDEBUG(DEBUG_EXTRA, "%s: TX - status=0x%04x " | |
2291 | "retry_count=%d tx_rate=%d seq_ctrl=%d " | |
2292 | "duration_id=%d\n", | |
2293 | dev->name, le16_to_cpu(txdesc.status), | |
2294 | txdesc.retry_count, txdesc.tx_rate, | |
2295 | le16_to_cpu(txdesc.seq_ctrl), | |
2296 | le16_to_cpu(txdesc.duration_id)); | |
2297 | } | |
2298 | ||
2299 | if (txdesc.sw_support) | |
2300 | hostap_tx_callback(local, &txdesc, 1, payload); | |
2301 | kfree(payload); | |
2302 | ||
2303 | fail: | |
2304 | HFA384X_OUTW(HFA384X_EV_TX, HFA384X_EVACK_OFF); | |
2305 | } | |
2306 | ||
2307 | ||
2308 | /* Called only as a tasklet (software IRQ) */ | |
2309 | static void hostap_sta_tx_exc_tasklet(unsigned long data) | |
2310 | { | |
2311 | local_info_t *local = (local_info_t *) data; | |
2312 | struct sk_buff *skb; | |
2313 | ||
2314 | while ((skb = skb_dequeue(&local->sta_tx_exc_list)) != NULL) { | |
2315 | struct hfa384x_tx_frame *txdesc = | |
2316 | (struct hfa384x_tx_frame *) skb->data; | |
2317 | ||
2318 | if (skb->len >= sizeof(*txdesc)) { | |
2319 | /* Convert Prism2 RX structure into IEEE 802.11 header | |
2320 | */ | |
2321 | u16 fc = le16_to_cpu(txdesc->frame_control); | |
2322 | int hdrlen = hostap_80211_get_hdrlen(fc); | |
2323 | memmove(skb_pull(skb, sizeof(*txdesc) - hdrlen), | |
2324 | &txdesc->frame_control, hdrlen); | |
2325 | ||
2326 | hostap_handle_sta_tx_exc(local, skb); | |
2327 | } | |
2328 | dev_kfree_skb(skb); | |
2329 | } | |
2330 | } | |
2331 | ||
2332 | ||
2333 | /* Called only as a tasklet (software IRQ) */ | |
2334 | static void prism2_txexc(local_info_t *local) | |
2335 | { | |
2336 | struct net_device *dev = local->dev; | |
2337 | u16 status, fc; | |
2338 | int show_dump, res; | |
2339 | char *payload = NULL; | |
2340 | struct hfa384x_tx_frame txdesc; | |
2341 | ||
2342 | show_dump = local->frame_dump & PRISM2_DUMP_TXEXC_HDR; | |
2343 | local->stats.tx_errors++; | |
2344 | ||
2345 | res = hostap_tx_compl_read(local, 1, &txdesc, &payload); | |
2346 | HFA384X_OUTW(HFA384X_EV_TXEXC, HFA384X_EVACK_OFF); | |
2347 | if (res) | |
2348 | return; | |
2349 | ||
2350 | status = le16_to_cpu(txdesc.status); | |
2351 | ||
2352 | /* We produce a TXDROP event only for retry or lifetime | |
2353 | * exceeded, because that's the only status that really mean | |
2354 | * that this particular node went away. | |
2355 | * Other errors means that *we* screwed up. - Jean II */ | |
2356 | if (status & (HFA384X_TX_STATUS_RETRYERR | HFA384X_TX_STATUS_AGEDERR)) | |
2357 | { | |
2358 | union iwreq_data wrqu; | |
2359 | ||
2360 | /* Copy 802.11 dest address. */ | |
2361 | memcpy(wrqu.addr.sa_data, txdesc.addr1, ETH_ALEN); | |
2362 | wrqu.addr.sa_family = ARPHRD_ETHER; | |
2363 | wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL); | |
2364 | } else | |
2365 | show_dump = 1; | |
2366 | ||
2367 | if (local->iw_mode == IW_MODE_MASTER || | |
2368 | local->iw_mode == IW_MODE_REPEAT || | |
2369 | local->wds_type & HOSTAP_WDS_AP_CLIENT) { | |
2370 | struct sk_buff *skb; | |
2371 | skb = dev_alloc_skb(sizeof(txdesc)); | |
2372 | if (skb) { | |
2373 | memcpy(skb_put(skb, sizeof(txdesc)), &txdesc, | |
2374 | sizeof(txdesc)); | |
2375 | skb_queue_tail(&local->sta_tx_exc_list, skb); | |
2376 | tasklet_schedule(&local->sta_tx_exc_tasklet); | |
2377 | } | |
2378 | } | |
2379 | ||
2380 | if (txdesc.sw_support) | |
2381 | hostap_tx_callback(local, &txdesc, 0, payload); | |
2382 | kfree(payload); | |
2383 | ||
2384 | if (!show_dump) | |
2385 | return; | |
2386 | ||
2387 | PDEBUG(DEBUG_EXTRA, "%s: TXEXC - status=0x%04x (%s%s%s%s)" | |
2388 | " tx_control=%04x\n", | |
2389 | dev->name, status, | |
2390 | status & HFA384X_TX_STATUS_RETRYERR ? "[RetryErr]" : "", | |
2391 | status & HFA384X_TX_STATUS_AGEDERR ? "[AgedErr]" : "", | |
2392 | status & HFA384X_TX_STATUS_DISCON ? "[Discon]" : "", | |
2393 | status & HFA384X_TX_STATUS_FORMERR ? "[FormErr]" : "", | |
2394 | le16_to_cpu(txdesc.tx_control)); | |
2395 | ||
2396 | fc = le16_to_cpu(txdesc.frame_control); | |
2397 | PDEBUG(DEBUG_EXTRA, " retry_count=%d tx_rate=%d fc=0x%04x " | |
2398 | "(%s%s%s::%d%s%s)\n", | |
2399 | txdesc.retry_count, txdesc.tx_rate, fc, | |
4339d328 JM |
2400 | WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_MGMT ? "Mgmt" : "", |
2401 | WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_CTL ? "Ctrl" : "", | |
2402 | WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA ? "Data" : "", | |
2403 | WLAN_FC_GET_STYPE(fc) >> 4, | |
b2f4a2e3 JM |
2404 | fc & IEEE80211_FCTL_TODS ? " ToDS" : "", |
2405 | fc & IEEE80211_FCTL_FROMDS ? " FromDS" : ""); | |
ff1d2767 JM |
2406 | PDEBUG(DEBUG_EXTRA, " A1=" MACSTR " A2=" MACSTR " A3=" |
2407 | MACSTR " A4=" MACSTR "\n", | |
2408 | MAC2STR(txdesc.addr1), MAC2STR(txdesc.addr2), | |
2409 | MAC2STR(txdesc.addr3), MAC2STR(txdesc.addr4)); | |
2410 | } | |
2411 | ||
2412 | ||
2413 | /* Called only as a tasklet (software IRQ) */ | |
2414 | static void hostap_info_tasklet(unsigned long data) | |
2415 | { | |
2416 | local_info_t *local = (local_info_t *) data; | |
2417 | struct sk_buff *skb; | |
2418 | ||
2419 | while ((skb = skb_dequeue(&local->info_list)) != NULL) { | |
2420 | hostap_info_process(local, skb); | |
2421 | dev_kfree_skb(skb); | |
2422 | } | |
2423 | } | |
2424 | ||
2425 | ||
2426 | /* Called only as a tasklet (software IRQ) */ | |
2427 | static void prism2_info(local_info_t *local) | |
2428 | { | |
2429 | struct net_device *dev = local->dev; | |
2430 | u16 fid; | |
2431 | int res, left; | |
2432 | struct hfa384x_info_frame info; | |
2433 | struct sk_buff *skb; | |
2434 | ||
2435 | fid = HFA384X_INW(HFA384X_INFOFID_OFF); | |
2436 | ||
2437 | spin_lock(&local->baplock); | |
2438 | res = hfa384x_setup_bap(dev, BAP0, fid, 0); | |
2439 | if (!res) | |
2440 | res = hfa384x_from_bap(dev, BAP0, &info, sizeof(info)); | |
2441 | if (res) { | |
2442 | spin_unlock(&local->baplock); | |
2443 | printk(KERN_DEBUG "Could not get info frame (fid=0x%04x)\n", | |
2444 | fid); | |
2445 | if (res == -ETIMEDOUT) { | |
2446 | schedule_work(&local->reset_queue); | |
2447 | } | |
2448 | goto out; | |
2449 | } | |
2450 | ||
2451 | le16_to_cpus(&info.len); | |
2452 | le16_to_cpus(&info.type); | |
2453 | left = (info.len - 1) * 2; | |
2454 | ||
2455 | if (info.len & 0x8000 || info.len == 0 || left > 2060) { | |
2456 | /* data register seems to give 0x8000 in some error cases even | |
2457 | * though busy bit is not set in offset register; | |
2458 | * in addition, length must be at least 1 due to type field */ | |
2459 | spin_unlock(&local->baplock); | |
2460 | printk(KERN_DEBUG "%s: Received info frame with invalid " | |
2461 | "length 0x%04x (type 0x%04x)\n", dev->name, info.len, | |
2462 | info.type); | |
2463 | goto out; | |
2464 | } | |
2465 | ||
2466 | skb = dev_alloc_skb(sizeof(info) + left); | |
2467 | if (skb == NULL) { | |
2468 | spin_unlock(&local->baplock); | |
2469 | printk(KERN_DEBUG "%s: Could not allocate skb for info " | |
2470 | "frame\n", dev->name); | |
2471 | goto out; | |
2472 | } | |
2473 | ||
2474 | memcpy(skb_put(skb, sizeof(info)), &info, sizeof(info)); | |
2475 | if (left > 0 && hfa384x_from_bap(dev, BAP0, skb_put(skb, left), left)) | |
2476 | { | |
2477 | spin_unlock(&local->baplock); | |
2478 | printk(KERN_WARNING "%s: Info frame read failed (fid=0x%04x, " | |
2479 | "len=0x%04x, type=0x%04x\n", | |
2480 | dev->name, fid, info.len, info.type); | |
2481 | dev_kfree_skb(skb); | |
2482 | goto out; | |
2483 | } | |
2484 | spin_unlock(&local->baplock); | |
2485 | ||
2486 | skb_queue_tail(&local->info_list, skb); | |
2487 | tasklet_schedule(&local->info_tasklet); | |
2488 | ||
2489 | out: | |
2490 | HFA384X_OUTW(HFA384X_EV_INFO, HFA384X_EVACK_OFF); | |
2491 | } | |
2492 | ||
2493 | ||
2494 | /* Called only as a tasklet (software IRQ) */ | |
2495 | static void hostap_bap_tasklet(unsigned long data) | |
2496 | { | |
2497 | local_info_t *local = (local_info_t *) data; | |
2498 | struct net_device *dev = local->dev; | |
2499 | u16 ev; | |
2500 | int frames = 30; | |
2501 | ||
2502 | if (local->func->card_present && !local->func->card_present(local)) | |
2503 | return; | |
2504 | ||
2505 | set_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); | |
2506 | ||
2507 | /* Process all pending BAP events without generating new interrupts | |
2508 | * for them */ | |
2509 | while (frames-- > 0) { | |
2510 | ev = HFA384X_INW(HFA384X_EVSTAT_OFF); | |
2511 | if (ev == 0xffff || !(ev & HFA384X_BAP0_EVENTS)) | |
2512 | break; | |
2513 | if (ev & HFA384X_EV_RX) | |
2514 | prism2_rx(local); | |
2515 | if (ev & HFA384X_EV_INFO) | |
2516 | prism2_info(local); | |
2517 | if (ev & HFA384X_EV_TX) | |
2518 | prism2_tx_ev(local); | |
2519 | if (ev & HFA384X_EV_TXEXC) | |
2520 | prism2_txexc(local); | |
2521 | } | |
2522 | ||
2523 | set_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); | |
2524 | clear_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); | |
2525 | ||
2526 | /* Enable interrupts for new BAP events */ | |
2527 | hfa384x_events_all(dev); | |
2528 | clear_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); | |
2529 | } | |
2530 | ||
2531 | ||
ff1d2767 JM |
2532 | /* Called only from hardware IRQ */ |
2533 | static void prism2_infdrop(struct net_device *dev) | |
2534 | { | |
2535 | static unsigned long last_inquire = 0; | |
2536 | ||
2537 | PDEBUG(DEBUG_EXTRA, "%s: INFDROP event\n", dev->name); | |
2538 | ||
2539 | /* some firmware versions seem to get stuck with | |
2540 | * full CommTallies in high traffic load cases; every | |
2541 | * packet will then cause INFDROP event and CommTallies | |
2542 | * info frame will not be sent automatically. Try to | |
2543 | * get out of this state by inquiring CommTallies. */ | |
2544 | if (!last_inquire || time_after(jiffies, last_inquire + HZ)) { | |
2545 | hfa384x_cmd_callback(dev, HFA384X_CMDCODE_INQUIRE, | |
b15eff26 | 2546 | HFA384X_INFO_COMMTALLIES, NULL, 0); |
ff1d2767 JM |
2547 | last_inquire = jiffies; |
2548 | } | |
2549 | } | |
2550 | ||
2551 | ||
2552 | /* Called only from hardware IRQ */ | |
2553 | static void prism2_ev_tick(struct net_device *dev) | |
2554 | { | |
2555 | struct hostap_interface *iface; | |
2556 | local_info_t *local; | |
2557 | u16 evstat, inten; | |
2558 | static int prev_stuck = 0; | |
2559 | ||
2560 | iface = netdev_priv(dev); | |
2561 | local = iface->local; | |
2562 | ||
2563 | if (time_after(jiffies, local->last_tick_timer + 5 * HZ) && | |
2564 | local->last_tick_timer) { | |
2565 | evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); | |
2566 | inten = HFA384X_INW(HFA384X_INTEN_OFF); | |
2567 | if (!prev_stuck) { | |
2568 | printk(KERN_INFO "%s: SW TICK stuck? " | |
2569 | "bits=0x%lx EvStat=%04x IntEn=%04x\n", | |
2570 | dev->name, local->bits, evstat, inten); | |
2571 | } | |
2572 | local->sw_tick_stuck++; | |
2573 | if ((evstat & HFA384X_BAP0_EVENTS) && | |
2574 | (inten & HFA384X_BAP0_EVENTS)) { | |
2575 | printk(KERN_INFO "%s: trying to recover from IRQ " | |
2576 | "hang\n", dev->name); | |
2577 | hfa384x_events_no_bap0(dev); | |
2578 | } | |
2579 | prev_stuck = 1; | |
2580 | } else | |
2581 | prev_stuck = 0; | |
2582 | } | |
2583 | ||
2584 | ||
2585 | /* Called only from hardware IRQ */ | |
858119e1 | 2586 | static void prism2_check_magic(local_info_t *local) |
ff1d2767 JM |
2587 | { |
2588 | /* at least PCI Prism2.5 with bus mastering seems to sometimes | |
2589 | * return 0x0000 in SWSUPPORT0 for unknown reason, but re-reading the | |
2590 | * register once or twice seems to get the correct value.. PCI cards | |
2591 | * cannot anyway be removed during normal operation, so there is not | |
2592 | * really any need for this verification with them. */ | |
2593 | ||
2594 | #ifndef PRISM2_PCI | |
2595 | #ifndef final_version | |
2596 | static unsigned long last_magic_err = 0; | |
2597 | struct net_device *dev = local->dev; | |
2598 | ||
2599 | if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { | |
2600 | if (!local->hw_ready) | |
2601 | return; | |
2602 | HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); | |
2603 | if (time_after(jiffies, last_magic_err + 10 * HZ)) { | |
2604 | printk("%s: Interrupt, but SWSUPPORT0 does not match: " | |
2605 | "%04X != %04X - card removed?\n", dev->name, | |
2606 | HFA384X_INW(HFA384X_SWSUPPORT0_OFF), | |
2607 | HFA384X_MAGIC); | |
2608 | last_magic_err = jiffies; | |
2609 | } else if (net_ratelimit()) { | |
2610 | printk(KERN_DEBUG "%s: interrupt - SWSUPPORT0=%04x " | |
2611 | "MAGIC=%04x\n", dev->name, | |
2612 | HFA384X_INW(HFA384X_SWSUPPORT0_OFF), | |
2613 | HFA384X_MAGIC); | |
2614 | } | |
2615 | if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != 0xffff) | |
2616 | schedule_work(&local->reset_queue); | |
2617 | return; | |
2618 | } | |
2619 | #endif /* final_version */ | |
2620 | #endif /* !PRISM2_PCI */ | |
2621 | } | |
2622 | ||
2623 | ||
2624 | /* Called only from hardware IRQ */ | |
7d12e780 | 2625 | static irqreturn_t prism2_interrupt(int irq, void *dev_id) |
ff1d2767 JM |
2626 | { |
2627 | struct net_device *dev = (struct net_device *) dev_id; | |
2628 | struct hostap_interface *iface; | |
2629 | local_info_t *local; | |
2630 | int events = 0; | |
2631 | u16 ev; | |
2632 | ||
2633 | iface = netdev_priv(dev); | |
2634 | local = iface->local; | |
2635 | ||
2636 | prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 0); | |
2637 | ||
2638 | if (local->func->card_present && !local->func->card_present(local)) { | |
2639 | if (net_ratelimit()) { | |
2640 | printk(KERN_DEBUG "%s: Interrupt, but dev not OK\n", | |
2641 | dev->name); | |
2642 | } | |
2643 | return IRQ_HANDLED; | |
2644 | } | |
2645 | ||
2646 | prism2_check_magic(local); | |
2647 | ||
2648 | for (;;) { | |
2649 | ev = HFA384X_INW(HFA384X_EVSTAT_OFF); | |
2650 | if (ev == 0xffff) { | |
2651 | if (local->shutdown) | |
2652 | return IRQ_HANDLED; | |
2653 | HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); | |
2654 | printk(KERN_DEBUG "%s: prism2_interrupt: ev=0xffff\n", | |
2655 | dev->name); | |
2656 | return IRQ_HANDLED; | |
2657 | } | |
2658 | ||
2659 | ev &= HFA384X_INW(HFA384X_INTEN_OFF); | |
2660 | if (ev == 0) | |
2661 | break; | |
2662 | ||
2663 | if (ev & HFA384X_EV_CMD) { | |
2664 | prism2_cmd_ev(dev); | |
2665 | } | |
2666 | ||
2667 | /* Above events are needed even before hw is ready, but other | |
2668 | * events should be skipped during initialization. This may | |
2669 | * change for AllocEv if allocate_fid is implemented without | |
2670 | * busy waiting. */ | |
2671 | if (!local->hw_ready || local->hw_resetting || | |
2672 | !local->dev_enabled) { | |
2673 | ev = HFA384X_INW(HFA384X_EVSTAT_OFF); | |
2674 | if (ev & HFA384X_EV_CMD) | |
2675 | goto next_event; | |
2676 | if ((ev & HFA384X_EVENT_MASK) == 0) | |
2677 | return IRQ_HANDLED; | |
2678 | if (local->dev_enabled && (ev & ~HFA384X_EV_TICK) && | |
2679 | net_ratelimit()) { | |
2680 | printk(KERN_DEBUG "%s: prism2_interrupt: hw " | |
2681 | "not ready; skipping events 0x%04x " | |
2682 | "(IntEn=0x%04x)%s%s%s\n", | |
2683 | dev->name, ev, | |
2684 | HFA384X_INW(HFA384X_INTEN_OFF), | |
2685 | !local->hw_ready ? " (!hw_ready)" : "", | |
2686 | local->hw_resetting ? | |
2687 | " (hw_resetting)" : "", | |
2688 | !local->dev_enabled ? | |
2689 | " (!dev_enabled)" : ""); | |
2690 | } | |
2691 | HFA384X_OUTW(ev, HFA384X_EVACK_OFF); | |
2692 | return IRQ_HANDLED; | |
2693 | } | |
2694 | ||
2695 | if (ev & HFA384X_EV_TICK) { | |
2696 | prism2_ev_tick(dev); | |
2697 | HFA384X_OUTW(HFA384X_EV_TICK, HFA384X_EVACK_OFF); | |
2698 | } | |
2699 | ||
ff1d2767 JM |
2700 | if (ev & HFA384X_EV_ALLOC) { |
2701 | prism2_alloc_ev(dev); | |
2702 | HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); | |
2703 | } | |
2704 | ||
2705 | /* Reading data from the card is quite time consuming, so do it | |
2706 | * in tasklets. TX, TXEXC, RX, and INFO events will be ACKed | |
2707 | * and unmasked after needed data has been read completely. */ | |
2708 | if (ev & HFA384X_BAP0_EVENTS) { | |
2709 | hfa384x_events_no_bap0(dev); | |
2710 | tasklet_schedule(&local->bap_tasklet); | |
2711 | } | |
2712 | ||
2713 | #ifndef final_version | |
2714 | if (ev & HFA384X_EV_WTERR) { | |
2715 | PDEBUG(DEBUG_EXTRA, "%s: WTERR event\n", dev->name); | |
2716 | HFA384X_OUTW(HFA384X_EV_WTERR, HFA384X_EVACK_OFF); | |
2717 | } | |
2718 | #endif /* final_version */ | |
2719 | ||
2720 | if (ev & HFA384X_EV_INFDROP) { | |
2721 | prism2_infdrop(dev); | |
2722 | HFA384X_OUTW(HFA384X_EV_INFDROP, HFA384X_EVACK_OFF); | |
2723 | } | |
2724 | ||
2725 | next_event: | |
2726 | events++; | |
2727 | if (events >= PRISM2_MAX_INTERRUPT_EVENTS) { | |
2728 | PDEBUG(DEBUG_EXTRA, "prism2_interrupt: >%d events " | |
2729 | "(EvStat=0x%04x)\n", | |
2730 | PRISM2_MAX_INTERRUPT_EVENTS, | |
2731 | HFA384X_INW(HFA384X_EVSTAT_OFF)); | |
2732 | break; | |
2733 | } | |
2734 | } | |
2735 | prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 1); | |
2736 | return IRQ_RETVAL(events); | |
2737 | } | |
2738 | ||
2739 | ||
2740 | static void prism2_check_sta_fw_version(local_info_t *local) | |
2741 | { | |
2742 | struct hfa384x_comp_ident comp; | |
2743 | int id, variant, major, minor; | |
2744 | ||
2745 | if (hfa384x_get_rid(local->dev, HFA384X_RID_STAID, | |
2746 | &comp, sizeof(comp), 1) < 0) | |
2747 | return; | |
2748 | ||
2749 | local->fw_ap = 0; | |
2750 | id = le16_to_cpu(comp.id); | |
2751 | if (id != HFA384X_COMP_ID_STA) { | |
2752 | if (id == HFA384X_COMP_ID_FW_AP) | |
2753 | local->fw_ap = 1; | |
2754 | return; | |
2755 | } | |
2756 | ||
2757 | major = __le16_to_cpu(comp.major); | |
2758 | minor = __le16_to_cpu(comp.minor); | |
2759 | variant = __le16_to_cpu(comp.variant); | |
2760 | local->sta_fw_ver = PRISM2_FW_VER(major, minor, variant); | |
2761 | ||
2762 | /* Station firmware versions before 1.4.x seem to have a bug in | |
2763 | * firmware-based WEP encryption when using Host AP mode, so use | |
2764 | * host_encrypt as a default for them. Firmware version 1.4.9 is the | |
2765 | * first one that has been seen to produce correct encryption, but the | |
2766 | * bug might be fixed before that (although, at least 1.4.2 is broken). | |
2767 | */ | |
2768 | local->fw_encrypt_ok = local->sta_fw_ver >= PRISM2_FW_VER(1,4,9); | |
2769 | ||
2770 | if (local->iw_mode == IW_MODE_MASTER && !local->host_encrypt && | |
2771 | !local->fw_encrypt_ok) { | |
2772 | printk(KERN_DEBUG "%s: defaulting to host-based encryption as " | |
2773 | "a workaround for firmware bug in Host AP mode WEP\n", | |
2774 | local->dev->name); | |
2775 | local->host_encrypt = 1; | |
2776 | } | |
2777 | ||
2778 | /* IEEE 802.11 standard compliant WDS frames (4 addresses) were broken | |
2779 | * in station firmware versions before 1.5.x. With these versions, the | |
2780 | * driver uses a workaround with bogus frame format (4th address after | |
2781 | * the payload). This is not compatible with other AP devices. Since | |
2782 | * the firmware bug is fixed in the latest station firmware versions, | |
2783 | * automatically enable standard compliant mode for cards using station | |
2784 | * firmware version 1.5.0 or newer. */ | |
2785 | if (local->sta_fw_ver >= PRISM2_FW_VER(1,5,0)) | |
2786 | local->wds_type |= HOSTAP_WDS_STANDARD_FRAME; | |
2787 | else { | |
2788 | printk(KERN_DEBUG "%s: defaulting to bogus WDS frame as a " | |
2789 | "workaround for firmware bug in Host AP mode WDS\n", | |
2790 | local->dev->name); | |
2791 | } | |
2792 | ||
2793 | hostap_check_sta_fw_version(local->ap, local->sta_fw_ver); | |
2794 | } | |
2795 | ||
2796 | ||
2797 | static void prism2_crypt_deinit_entries(local_info_t *local, int force) | |
2798 | { | |
2799 | struct list_head *ptr, *n; | |
62fe7e37 | 2800 | struct ieee80211_crypt_data *entry; |
ff1d2767 JM |
2801 | |
2802 | for (ptr = local->crypt_deinit_list.next, n = ptr->next; | |
2803 | ptr != &local->crypt_deinit_list; ptr = n, n = ptr->next) { | |
62fe7e37 | 2804 | entry = list_entry(ptr, struct ieee80211_crypt_data, list); |
ff1d2767 JM |
2805 | |
2806 | if (atomic_read(&entry->refcnt) != 0 && !force) | |
2807 | continue; | |
2808 | ||
2809 | list_del(ptr); | |
2810 | ||
2811 | if (entry->ops) | |
2812 | entry->ops->deinit(entry->priv); | |
2813 | kfree(entry); | |
2814 | } | |
2815 | } | |
2816 | ||
2817 | ||
2818 | static void prism2_crypt_deinit_handler(unsigned long data) | |
2819 | { | |
2820 | local_info_t *local = (local_info_t *) data; | |
2821 | unsigned long flags; | |
2822 | ||
2823 | spin_lock_irqsave(&local->lock, flags); | |
2824 | prism2_crypt_deinit_entries(local, 0); | |
2825 | if (!list_empty(&local->crypt_deinit_list)) { | |
2826 | printk(KERN_DEBUG "%s: entries remaining in delayed crypt " | |
2827 | "deletion list\n", local->dev->name); | |
2828 | local->crypt_deinit_timer.expires = jiffies + HZ; | |
2829 | add_timer(&local->crypt_deinit_timer); | |
2830 | } | |
2831 | spin_unlock_irqrestore(&local->lock, flags); | |
2832 | ||
2833 | } | |
2834 | ||
2835 | ||
2836 | static void hostap_passive_scan(unsigned long data) | |
2837 | { | |
2838 | local_info_t *local = (local_info_t *) data; | |
2839 | struct net_device *dev = local->dev; | |
2840 | u16 channel; | |
2841 | ||
2842 | if (local->passive_scan_interval <= 0) | |
2843 | return; | |
2844 | ||
2845 | if (local->passive_scan_state == PASSIVE_SCAN_LISTEN) { | |
2846 | int max_tries = 16; | |
2847 | ||
2848 | /* Even though host system does not really know when the WLAN | |
2849 | * MAC is sending frames, try to avoid changing channels for | |
2850 | * passive scanning when a host-generated frame is being | |
2851 | * transmitted */ | |
2852 | if (test_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { | |
2853 | printk(KERN_DEBUG "%s: passive scan detected pending " | |
2854 | "TX - delaying\n", dev->name); | |
2855 | local->passive_scan_timer.expires = jiffies + HZ / 10; | |
2856 | add_timer(&local->passive_scan_timer); | |
2857 | return; | |
2858 | } | |
2859 | ||
2860 | do { | |
2861 | local->passive_scan_channel++; | |
2862 | if (local->passive_scan_channel > 14) | |
2863 | local->passive_scan_channel = 1; | |
2864 | max_tries--; | |
2865 | } while (!(local->channel_mask & | |
2866 | (1 << (local->passive_scan_channel - 1))) && | |
2867 | max_tries > 0); | |
2868 | ||
2869 | if (max_tries == 0) { | |
2870 | printk(KERN_INFO "%s: no allowed passive scan channels" | |
2871 | " found\n", dev->name); | |
2872 | return; | |
2873 | } | |
2874 | ||
2875 | printk(KERN_DEBUG "%s: passive scan channel %d\n", | |
2876 | dev->name, local->passive_scan_channel); | |
2877 | channel = local->passive_scan_channel; | |
2878 | local->passive_scan_state = PASSIVE_SCAN_WAIT; | |
2879 | local->passive_scan_timer.expires = jiffies + HZ / 10; | |
2880 | } else { | |
2881 | channel = local->channel; | |
2882 | local->passive_scan_state = PASSIVE_SCAN_LISTEN; | |
2883 | local->passive_scan_timer.expires = jiffies + | |
2884 | local->passive_scan_interval * HZ; | |
2885 | } | |
2886 | ||
2887 | if (hfa384x_cmd_callback(dev, HFA384X_CMDCODE_TEST | | |
2888 | (HFA384X_TEST_CHANGE_CHANNEL << 8), | |
b15eff26 | 2889 | channel, NULL, 0)) |
ff1d2767 JM |
2890 | printk(KERN_ERR "%s: passive scan channel set %d " |
2891 | "failed\n", dev->name, channel); | |
2892 | ||
2893 | add_timer(&local->passive_scan_timer); | |
2894 | } | |
2895 | ||
2896 | ||
2897 | /* Called only as a scheduled task when communications quality values should | |
2898 | * be updated. */ | |
c4028958 | 2899 | static void handle_comms_qual_update(struct work_struct *work) |
ff1d2767 | 2900 | { |
c4028958 DH |
2901 | local_info_t *local = |
2902 | container_of(work, local_info_t, comms_qual_update); | |
ff1d2767 JM |
2903 | prism2_update_comms_qual(local->dev); |
2904 | } | |
2905 | ||
2906 | ||
2907 | /* Software watchdog - called as a timer. Hardware interrupt (Tick event) is | |
2908 | * used to monitor that local->last_tick_timer is being updated. If not, | |
2909 | * interrupt busy-loop is assumed and driver tries to recover by masking out | |
2910 | * some events. */ | |
2911 | static void hostap_tick_timer(unsigned long data) | |
2912 | { | |
2913 | static unsigned long last_inquire = 0; | |
2914 | local_info_t *local = (local_info_t *) data; | |
2915 | local->last_tick_timer = jiffies; | |
2916 | ||
2917 | /* Inquire CommTallies every 10 seconds to keep the statistics updated | |
2918 | * more often during low load and when using 32-bit tallies. */ | |
2919 | if ((!last_inquire || time_after(jiffies, last_inquire + 10 * HZ)) && | |
2920 | !local->hw_downloading && local->hw_ready && | |
2921 | !local->hw_resetting && local->dev_enabled) { | |
2922 | hfa384x_cmd_callback(local->dev, HFA384X_CMDCODE_INQUIRE, | |
b15eff26 | 2923 | HFA384X_INFO_COMMTALLIES, NULL, 0); |
ff1d2767 JM |
2924 | last_inquire = jiffies; |
2925 | } | |
2926 | ||
2927 | if ((local->last_comms_qual_update == 0 || | |
2928 | time_after(jiffies, local->last_comms_qual_update + 10 * HZ)) && | |
2929 | (local->iw_mode == IW_MODE_INFRA || | |
2930 | local->iw_mode == IW_MODE_ADHOC)) { | |
2931 | schedule_work(&local->comms_qual_update); | |
2932 | } | |
2933 | ||
2934 | local->tick_timer.expires = jiffies + 2 * HZ; | |
2935 | add_timer(&local->tick_timer); | |
2936 | } | |
2937 | ||
2938 | ||
2939 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
2940 | static int prism2_registers_proc_read(char *page, char **start, off_t off, | |
2941 | int count, int *eof, void *data) | |
2942 | { | |
2943 | char *p = page; | |
2944 | local_info_t *local = (local_info_t *) data; | |
2945 | ||
2946 | if (off != 0) { | |
2947 | *eof = 1; | |
2948 | return 0; | |
2949 | } | |
2950 | ||
2951 | #define SHOW_REG(n) \ | |
2952 | p += sprintf(p, #n "=%04x\n", hfa384x_read_reg(local->dev, HFA384X_##n##_OFF)) | |
2953 | ||
2954 | SHOW_REG(CMD); | |
2955 | SHOW_REG(PARAM0); | |
2956 | SHOW_REG(PARAM1); | |
2957 | SHOW_REG(PARAM2); | |
2958 | SHOW_REG(STATUS); | |
2959 | SHOW_REG(RESP0); | |
2960 | SHOW_REG(RESP1); | |
2961 | SHOW_REG(RESP2); | |
2962 | SHOW_REG(INFOFID); | |
2963 | SHOW_REG(CONTROL); | |
2964 | SHOW_REG(SELECT0); | |
2965 | SHOW_REG(SELECT1); | |
2966 | SHOW_REG(OFFSET0); | |
2967 | SHOW_REG(OFFSET1); | |
2968 | SHOW_REG(RXFID); | |
2969 | SHOW_REG(ALLOCFID); | |
2970 | SHOW_REG(TXCOMPLFID); | |
2971 | SHOW_REG(SWSUPPORT0); | |
2972 | SHOW_REG(SWSUPPORT1); | |
2973 | SHOW_REG(SWSUPPORT2); | |
2974 | SHOW_REG(EVSTAT); | |
2975 | SHOW_REG(INTEN); | |
2976 | SHOW_REG(EVACK); | |
2977 | /* Do not read data registers, because they change the state of the | |
2978 | * MAC (offset += 2) */ | |
2979 | /* SHOW_REG(DATA0); */ | |
2980 | /* SHOW_REG(DATA1); */ | |
2981 | SHOW_REG(AUXPAGE); | |
2982 | SHOW_REG(AUXOFFSET); | |
2983 | /* SHOW_REG(AUXDATA); */ | |
2984 | #ifdef PRISM2_PCI | |
2985 | SHOW_REG(PCICOR); | |
2986 | SHOW_REG(PCIHCR); | |
2987 | SHOW_REG(PCI_M0_ADDRH); | |
2988 | SHOW_REG(PCI_M0_ADDRL); | |
2989 | SHOW_REG(PCI_M0_LEN); | |
2990 | SHOW_REG(PCI_M0_CTL); | |
2991 | SHOW_REG(PCI_STATUS); | |
2992 | SHOW_REG(PCI_M1_ADDRH); | |
2993 | SHOW_REG(PCI_M1_ADDRL); | |
2994 | SHOW_REG(PCI_M1_LEN); | |
2995 | SHOW_REG(PCI_M1_CTL); | |
2996 | #endif /* PRISM2_PCI */ | |
2997 | ||
2998 | return (p - page); | |
2999 | } | |
3000 | #endif /* PRISM2_NO_PROCFS_DEBUG */ | |
3001 | ||
3002 | ||
3003 | struct set_tim_data { | |
3004 | struct list_head list; | |
3005 | int aid; | |
3006 | int set; | |
3007 | }; | |
3008 | ||
3009 | static int prism2_set_tim(struct net_device *dev, int aid, int set) | |
3010 | { | |
3011 | struct list_head *ptr; | |
3012 | struct set_tim_data *new_entry; | |
3013 | struct hostap_interface *iface; | |
3014 | local_info_t *local; | |
3015 | ||
3016 | iface = netdev_priv(dev); | |
3017 | local = iface->local; | |
3018 | ||
3019 | new_entry = (struct set_tim_data *) | |
3020 | kmalloc(sizeof(*new_entry), GFP_ATOMIC); | |
3021 | if (new_entry == NULL) { | |
3022 | printk(KERN_DEBUG "%s: prism2_set_tim: kmalloc failed\n", | |
3023 | local->dev->name); | |
3024 | return -ENOMEM; | |
3025 | } | |
3026 | memset(new_entry, 0, sizeof(*new_entry)); | |
3027 | new_entry->aid = aid; | |
3028 | new_entry->set = set; | |
3029 | ||
3030 | spin_lock_bh(&local->set_tim_lock); | |
3031 | list_for_each(ptr, &local->set_tim_list) { | |
3032 | struct set_tim_data *entry = | |
3033 | list_entry(ptr, struct set_tim_data, list); | |
3034 | if (entry->aid == aid) { | |
3035 | PDEBUG(DEBUG_PS2, "%s: prism2_set_tim: aid=%d " | |
3036 | "set=%d ==> %d\n", | |
3037 | local->dev->name, aid, entry->set, set); | |
3038 | entry->set = set; | |
3039 | kfree(new_entry); | |
3040 | new_entry = NULL; | |
3041 | break; | |
3042 | } | |
3043 | } | |
3044 | if (new_entry) | |
3045 | list_add_tail(&new_entry->list, &local->set_tim_list); | |
3046 | spin_unlock_bh(&local->set_tim_lock); | |
3047 | ||
3048 | schedule_work(&local->set_tim_queue); | |
3049 | ||
3050 | return 0; | |
3051 | } | |
3052 | ||
3053 | ||
c4028958 | 3054 | static void handle_set_tim_queue(struct work_struct *work) |
ff1d2767 | 3055 | { |
c4028958 | 3056 | local_info_t *local = container_of(work, local_info_t, set_tim_queue); |
ff1d2767 JM |
3057 | struct set_tim_data *entry; |
3058 | u16 val; | |
3059 | ||
3060 | for (;;) { | |
3061 | entry = NULL; | |
3062 | spin_lock_bh(&local->set_tim_lock); | |
3063 | if (!list_empty(&local->set_tim_list)) { | |
3064 | entry = list_entry(local->set_tim_list.next, | |
3065 | struct set_tim_data, list); | |
3066 | list_del(&entry->list); | |
3067 | } | |
3068 | spin_unlock_bh(&local->set_tim_lock); | |
3069 | if (!entry) | |
3070 | break; | |
3071 | ||
3072 | PDEBUG(DEBUG_PS2, "%s: handle_set_tim_queue: aid=%d set=%d\n", | |
3073 | local->dev->name, entry->aid, entry->set); | |
3074 | ||
3075 | val = entry->aid; | |
3076 | if (entry->set) | |
3077 | val |= 0x8000; | |
3078 | if (hostap_set_word(local->dev, HFA384X_RID_CNFTIMCTRL, val)) { | |
3079 | printk(KERN_DEBUG "%s: set_tim failed (aid=%d " | |
3080 | "set=%d)\n", | |
3081 | local->dev->name, entry->aid, entry->set); | |
3082 | } | |
3083 | ||
3084 | kfree(entry); | |
3085 | } | |
3086 | } | |
3087 | ||
3088 | ||
3089 | static void prism2_clear_set_tim_queue(local_info_t *local) | |
3090 | { | |
3091 | struct list_head *ptr, *n; | |
3092 | ||
3093 | list_for_each_safe(ptr, n, &local->set_tim_list) { | |
3094 | struct set_tim_data *entry; | |
3095 | entry = list_entry(ptr, struct set_tim_data, list); | |
3096 | list_del(&entry->list); | |
3097 | kfree(entry); | |
3098 | } | |
3099 | } | |
3100 | ||
3101 | ||
cd11acdd AV |
3102 | /* |
3103 | * HostAP uses two layers of net devices, where the inner | |
3104 | * layer gets called all the time from the outer layer. | |
3105 | * This is a natural nesting, which needs a split lock type. | |
3106 | */ | |
3107 | static struct lock_class_key hostap_netdev_xmit_lock_key; | |
3108 | ||
3109 | ||
ff1d2767 | 3110 | static struct net_device * |
0cd545d6 DH |
3111 | prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx, |
3112 | struct device *sdev) | |
ff1d2767 JM |
3113 | { |
3114 | struct net_device *dev; | |
3115 | struct hostap_interface *iface; | |
3116 | struct local_info *local; | |
3117 | int len, i, ret; | |
3118 | ||
3119 | if (funcs == NULL) | |
3120 | return NULL; | |
3121 | ||
3122 | len = strlen(dev_template); | |
3123 | if (len >= IFNAMSIZ || strstr(dev_template, "%d") == NULL) { | |
3124 | printk(KERN_WARNING "hostap: Invalid dev_template='%s'\n", | |
3125 | dev_template); | |
3126 | return NULL; | |
3127 | } | |
3128 | ||
3129 | len = sizeof(struct hostap_interface) + | |
3130 | 3 + sizeof(struct local_info) + | |
3131 | 3 + sizeof(struct ap_data); | |
3132 | ||
3133 | dev = alloc_etherdev(len); | |
3134 | if (dev == NULL) | |
3135 | return NULL; | |
3136 | ||
3137 | iface = netdev_priv(dev); | |
3138 | local = (struct local_info *) ((((long) (iface + 1)) + 3) & ~3); | |
3139 | local->ap = (struct ap_data *) ((((long) (local + 1)) + 3) & ~3); | |
3140 | local->dev = iface->dev = dev; | |
3141 | iface->local = local; | |
3142 | iface->type = HOSTAP_INTERFACE_MASTER; | |
3143 | INIT_LIST_HEAD(&local->hostap_interfaces); | |
3144 | ||
3145 | local->hw_module = THIS_MODULE; | |
3146 | ||
3147 | #ifdef PRISM2_IO_DEBUG | |
3148 | local->io_debug_enabled = 1; | |
3149 | #endif /* PRISM2_IO_DEBUG */ | |
3150 | ||
ff1d2767 JM |
3151 | local->func = funcs; |
3152 | local->func->cmd = hfa384x_cmd; | |
3153 | local->func->read_regs = hfa384x_read_regs; | |
3154 | local->func->get_rid = hfa384x_get_rid; | |
3155 | local->func->set_rid = hfa384x_set_rid; | |
3156 | local->func->hw_enable = prism2_hw_enable; | |
3157 | local->func->hw_config = prism2_hw_config; | |
3158 | local->func->hw_reset = prism2_hw_reset; | |
3159 | local->func->hw_shutdown = prism2_hw_shutdown; | |
3160 | local->func->reset_port = prism2_reset_port; | |
3161 | local->func->schedule_reset = prism2_schedule_reset; | |
3162 | #ifdef PRISM2_DOWNLOAD_SUPPORT | |
3163 | local->func->read_aux = prism2_download_aux_dump; | |
3164 | local->func->download = prism2_download; | |
3165 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ | |
3166 | local->func->tx = prism2_tx_80211; | |
3167 | local->func->set_tim = prism2_set_tim; | |
3168 | local->func->need_tx_headroom = 0; /* no need to add txdesc in | |
3169 | * skb->data (FIX: maybe for DMA bus | |
3170 | * mastering? */ | |
3171 | ||
3172 | local->mtu = mtu; | |
3173 | ||
3174 | rwlock_init(&local->iface_lock); | |
3175 | spin_lock_init(&local->txfidlock); | |
3176 | spin_lock_init(&local->cmdlock); | |
3177 | spin_lock_init(&local->baplock); | |
3178 | spin_lock_init(&local->lock); | |
3179 | init_MUTEX(&local->rid_bap_sem); | |
3180 | ||
3181 | if (card_idx < 0 || card_idx >= MAX_PARM_DEVICES) | |
3182 | card_idx = 0; | |
3183 | local->card_idx = card_idx; | |
3184 | ||
3185 | len = strlen(essid); | |
3186 | memcpy(local->essid, essid, | |
3187 | len > MAX_SSID_LEN ? MAX_SSID_LEN : len); | |
3188 | local->essid[MAX_SSID_LEN] = '\0'; | |
3189 | i = GET_INT_PARM(iw_mode, card_idx); | |
3190 | if ((i >= IW_MODE_ADHOC && i <= IW_MODE_REPEAT) || | |
3191 | i == IW_MODE_MONITOR) { | |
3192 | local->iw_mode = i; | |
3193 | } else { | |
3194 | printk(KERN_WARNING "prism2: Unknown iw_mode %d; using " | |
3195 | "IW_MODE_MASTER\n", i); | |
3196 | local->iw_mode = IW_MODE_MASTER; | |
3197 | } | |
3198 | local->channel = GET_INT_PARM(channel, card_idx); | |
3199 | local->beacon_int = GET_INT_PARM(beacon_int, card_idx); | |
3200 | local->dtim_period = GET_INT_PARM(dtim_period, card_idx); | |
3201 | local->wds_max_connections = 16; | |
3202 | local->tx_control = HFA384X_TX_CTRL_FLAGS; | |
3203 | local->manual_retry_count = -1; | |
3204 | local->rts_threshold = 2347; | |
3205 | local->fragm_threshold = 2346; | |
3206 | local->rssi_to_dBm = 100; /* default; to be overriden by | |
3207 | * cnfDbmAdjust, if available */ | |
3208 | local->auth_algs = PRISM2_AUTH_OPEN | PRISM2_AUTH_SHARED_KEY; | |
3209 | local->sram_type = -1; | |
72ca9c61 | 3210 | local->scan_channel_mask = 0xffff; |
ff1d2767 JM |
3211 | |
3212 | /* Initialize task queue structures */ | |
c4028958 | 3213 | INIT_WORK(&local->reset_queue, handle_reset_queue); |
ff1d2767 | 3214 | INIT_WORK(&local->set_multicast_list_queue, |
c4028958 | 3215 | hostap_set_multicast_list_queue); |
ff1d2767 | 3216 | |
c4028958 | 3217 | INIT_WORK(&local->set_tim_queue, handle_set_tim_queue); |
ff1d2767 JM |
3218 | INIT_LIST_HEAD(&local->set_tim_list); |
3219 | spin_lock_init(&local->set_tim_lock); | |
3220 | ||
c4028958 | 3221 | INIT_WORK(&local->comms_qual_update, handle_comms_qual_update); |
ff1d2767 JM |
3222 | |
3223 | /* Initialize tasklets for handling hardware IRQ related operations | |
3224 | * outside hw IRQ handler */ | |
3225 | #define HOSTAP_TASKLET_INIT(q, f, d) \ | |
3226 | do { memset((q), 0, sizeof(*(q))); (q)->func = (f); (q)->data = (d); } \ | |
3227 | while (0) | |
3228 | HOSTAP_TASKLET_INIT(&local->bap_tasklet, hostap_bap_tasklet, | |
3229 | (unsigned long) local); | |
3230 | ||
3231 | HOSTAP_TASKLET_INIT(&local->info_tasklet, hostap_info_tasklet, | |
3232 | (unsigned long) local); | |
3233 | hostap_info_init(local); | |
3234 | ||
3235 | HOSTAP_TASKLET_INIT(&local->rx_tasklet, | |
3236 | hostap_rx_tasklet, (unsigned long) local); | |
3237 | skb_queue_head_init(&local->rx_list); | |
3238 | ||
3239 | HOSTAP_TASKLET_INIT(&local->sta_tx_exc_tasklet, | |
3240 | hostap_sta_tx_exc_tasklet, (unsigned long) local); | |
3241 | skb_queue_head_init(&local->sta_tx_exc_list); | |
3242 | ||
3243 | INIT_LIST_HEAD(&local->cmd_queue); | |
3244 | init_waitqueue_head(&local->hostscan_wq); | |
3245 | INIT_LIST_HEAD(&local->crypt_deinit_list); | |
3246 | init_timer(&local->crypt_deinit_timer); | |
3247 | local->crypt_deinit_timer.data = (unsigned long) local; | |
3248 | local->crypt_deinit_timer.function = prism2_crypt_deinit_handler; | |
3249 | ||
3250 | init_timer(&local->passive_scan_timer); | |
3251 | local->passive_scan_timer.data = (unsigned long) local; | |
3252 | local->passive_scan_timer.function = hostap_passive_scan; | |
3253 | ||
3254 | init_timer(&local->tick_timer); | |
3255 | local->tick_timer.data = (unsigned long) local; | |
3256 | local->tick_timer.function = hostap_tick_timer; | |
3257 | local->tick_timer.expires = jiffies + 2 * HZ; | |
3258 | add_timer(&local->tick_timer); | |
3259 | ||
3260 | INIT_LIST_HEAD(&local->bss_list); | |
3261 | ||
3262 | hostap_setup_dev(dev, local, 1); | |
3263 | local->saved_eth_header_parse = dev->hard_header_parse; | |
3264 | ||
3265 | dev->hard_start_xmit = hostap_master_start_xmit; | |
3266 | dev->type = ARPHRD_IEEE80211; | |
3267 | dev->hard_header_parse = hostap_80211_header_parse; | |
3268 | ||
3269 | rtnl_lock(); | |
3270 | ret = dev_alloc_name(dev, "wifi%d"); | |
0cd545d6 | 3271 | SET_NETDEV_DEV(dev, sdev); |
ff1d2767 JM |
3272 | if (ret >= 0) |
3273 | ret = register_netdevice(dev); | |
cd11acdd AV |
3274 | |
3275 | lockdep_set_class(&dev->_xmit_lock, &hostap_netdev_xmit_lock_key); | |
ff1d2767 JM |
3276 | rtnl_unlock(); |
3277 | if (ret < 0) { | |
3278 | printk(KERN_WARNING "%s: register netdevice failed!\n", | |
3279 | dev_info); | |
3280 | goto fail; | |
3281 | } | |
3282 | printk(KERN_INFO "%s: Registered netdevice %s\n", dev_info, dev->name); | |
3283 | ||
3284 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
3285 | create_proc_read_entry("registers", 0, local->proc, | |
3286 | prism2_registers_proc_read, local); | |
3287 | #endif /* PRISM2_NO_PROCFS_DEBUG */ | |
3288 | ||
3289 | hostap_init_data(local); | |
3290 | return dev; | |
3291 | ||
3292 | fail: | |
ff1d2767 JM |
3293 | free_netdev(dev); |
3294 | return NULL; | |
3295 | } | |
3296 | ||
3297 | ||
3298 | static int hostap_hw_ready(struct net_device *dev) | |
3299 | { | |
3300 | struct hostap_interface *iface; | |
3301 | struct local_info *local; | |
3302 | ||
3303 | iface = netdev_priv(dev); | |
3304 | local = iface->local; | |
3305 | local->ddev = hostap_add_interface(local, HOSTAP_INTERFACE_MAIN, 0, | |
3306 | "", dev_template); | |
3307 | ||
3308 | if (local->ddev) { | |
3309 | if (local->iw_mode == IW_MODE_INFRA || | |
3310 | local->iw_mode == IW_MODE_ADHOC) { | |
3311 | netif_carrier_off(local->dev); | |
3312 | netif_carrier_off(local->ddev); | |
3313 | } | |
3314 | hostap_init_proc(local); | |
3315 | hostap_init_ap_proc(local); | |
3316 | return 0; | |
3317 | } | |
3318 | ||
3319 | return -1; | |
3320 | } | |
3321 | ||
3322 | ||
3323 | static void prism2_free_local_data(struct net_device *dev) | |
3324 | { | |
3325 | struct hostap_tx_callback_info *tx_cb, *tx_cb_prev; | |
3326 | int i; | |
3327 | struct hostap_interface *iface; | |
3328 | struct local_info *local; | |
3329 | struct list_head *ptr, *n; | |
3330 | ||
3331 | if (dev == NULL) | |
3332 | return; | |
3333 | ||
3334 | iface = netdev_priv(dev); | |
3335 | local = iface->local; | |
3336 | ||
7cb3cd09 JM |
3337 | /* Unregister all netdevs before freeing local data. */ |
3338 | list_for_each_safe(ptr, n, &local->hostap_interfaces) { | |
3339 | iface = list_entry(ptr, struct hostap_interface, list); | |
3340 | if (iface->type == HOSTAP_INTERFACE_MASTER) { | |
3341 | /* special handling for this interface below */ | |
3342 | continue; | |
3343 | } | |
3344 | hostap_remove_interface(iface->dev, 0, 1); | |
3345 | } | |
3346 | ||
3347 | unregister_netdev(local->dev); | |
3348 | ||
ff1d2767 JM |
3349 | flush_scheduled_work(); |
3350 | ||
3351 | if (timer_pending(&local->crypt_deinit_timer)) | |
3352 | del_timer(&local->crypt_deinit_timer); | |
3353 | prism2_crypt_deinit_entries(local, 1); | |
3354 | ||
3355 | if (timer_pending(&local->passive_scan_timer)) | |
3356 | del_timer(&local->passive_scan_timer); | |
3357 | ||
3358 | if (timer_pending(&local->tick_timer)) | |
3359 | del_timer(&local->tick_timer); | |
3360 | ||
3361 | prism2_clear_cmd_queue(local); | |
3362 | ||
3363 | skb_queue_purge(&local->info_list); | |
3364 | skb_queue_purge(&local->rx_list); | |
3365 | skb_queue_purge(&local->sta_tx_exc_list); | |
3366 | ||
3367 | if (local->dev_enabled) | |
3368 | prism2_callback(local, PRISM2_CALLBACK_DISABLE); | |
3369 | ||
3370 | for (i = 0; i < WEP_KEYS; i++) { | |
62fe7e37 | 3371 | struct ieee80211_crypt_data *crypt = local->crypt[i]; |
ff1d2767 JM |
3372 | if (crypt) { |
3373 | if (crypt->ops) | |
3374 | crypt->ops->deinit(crypt->priv); | |
3375 | kfree(crypt); | |
3376 | local->crypt[i] = NULL; | |
3377 | } | |
3378 | } | |
3379 | ||
3380 | if (local->ap != NULL) | |
3381 | hostap_free_data(local->ap); | |
3382 | ||
3383 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
3384 | if (local->proc != NULL) | |
3385 | remove_proc_entry("registers", local->proc); | |
3386 | #endif /* PRISM2_NO_PROCFS_DEBUG */ | |
3387 | hostap_remove_proc(local); | |
3388 | ||
3389 | tx_cb = local->tx_callback; | |
3390 | while (tx_cb != NULL) { | |
3391 | tx_cb_prev = tx_cb; | |
3392 | tx_cb = tx_cb->next; | |
3393 | kfree(tx_cb_prev); | |
3394 | } | |
3395 | ||
3396 | hostap_set_hostapd(local, 0, 0); | |
3397 | hostap_set_hostapd_sta(local, 0, 0); | |
3398 | ||
3399 | for (i = 0; i < PRISM2_FRAG_CACHE_LEN; i++) { | |
3400 | if (local->frag_cache[i].skb != NULL) | |
3401 | dev_kfree_skb(local->frag_cache[i].skb); | |
3402 | } | |
3403 | ||
3404 | #ifdef PRISM2_DOWNLOAD_SUPPORT | |
3405 | prism2_download_free_data(local->dl_pri); | |
3406 | prism2_download_free_data(local->dl_sec); | |
3407 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ | |
3408 | ||
ff1d2767 JM |
3409 | prism2_clear_set_tim_queue(local); |
3410 | ||
3411 | list_for_each_safe(ptr, n, &local->bss_list) { | |
3412 | struct hostap_bss_info *bss = | |
3413 | list_entry(ptr, struct hostap_bss_info, list); | |
3414 | kfree(bss); | |
3415 | } | |
3416 | ||
ff1d2767 JM |
3417 | kfree(local->pda); |
3418 | kfree(local->last_scan_results); | |
3419 | kfree(local->generic_elem); | |
3420 | ||
ff1d2767 JM |
3421 | free_netdev(local->dev); |
3422 | } | |
3423 | ||
3424 | ||
3425 | #ifndef PRISM2_PLX | |
3426 | static void prism2_suspend(struct net_device *dev) | |
3427 | { | |
3428 | struct hostap_interface *iface; | |
3429 | struct local_info *local; | |
3430 | union iwreq_data wrqu; | |
3431 | ||
3432 | iface = dev->priv; | |
3433 | local = iface->local; | |
3434 | ||
3435 | /* Send disconnect event, e.g., to trigger reassociation after resume | |
3436 | * if wpa_supplicant is used. */ | |
3437 | memset(&wrqu, 0, sizeof(wrqu)); | |
3438 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
3439 | wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL); | |
3440 | ||
3441 | /* Disable hardware and firmware */ | |
3442 | prism2_hw_shutdown(dev, 0); | |
3443 | } | |
3444 | #endif /* PRISM2_PLX */ | |
3445 | ||
3446 | ||
3447 | /* These might at some point be compiled separately and used as separate | |
3448 | * kernel modules or linked into one */ | |
3449 | #ifdef PRISM2_DOWNLOAD_SUPPORT | |
3450 | #include "hostap_download.c" | |
3451 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ | |
3452 | ||
3453 | #ifdef PRISM2_CALLBACK | |
3454 | /* External hostap_callback.c file can be used to, e.g., blink activity led. | |
3455 | * This can use platform specific code and must define prism2_callback() | |
3456 | * function (if PRISM2_CALLBACK is not defined, these function calls are not | |
3457 | * used. */ | |
3458 | #include "hostap_callback.c" | |
3459 | #endif /* PRISM2_CALLBACK */ |