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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 | |
85d32e7b JM |
6 | * <j@w1.fi> |
7 | * Copyright (c) 2002-2005, Jouni Malinen <j@w1.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> | |
7c0f6ba6 | 35 | #include <linux/uaccess.h> |
ff1d2767 JM |
36 | |
37 | #include <linux/slab.h> | |
38 | #include <linux/netdevice.h> | |
39 | #include <linux/etherdevice.h> | |
40 | #include <linux/proc_fs.h> | |
6bbefe86 | 41 | #include <linux/seq_file.h> |
ff1d2767 JM |
42 | #include <linux/if_arp.h> |
43 | #include <linux/delay.h> | |
44 | #include <linux/random.h> | |
45 | #include <linux/wait.h> | |
174cd4b1 | 46 | #include <linux/sched/signal.h> |
ff1d2767 JM |
47 | #include <linux/rtnetlink.h> |
48 | #include <linux/wireless.h> | |
49 | #include <net/iw_handler.h> | |
274bfb8d | 50 | #include <net/lib80211.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 */ | |
6bbefe86 | 133 | static const struct file_operations prism2_download_aux_dump_proc_fops; |
ff1d2767 JM |
134 | static u8 * prism2_read_pda(struct net_device *dev); |
135 | static int prism2_download(local_info_t *local, | |
136 | struct prism2_download_param *param); | |
137 | static void prism2_download_free_data(struct prism2_download_data *dl); | |
138 | static int prism2_download_volatile(local_info_t *local, | |
139 | struct prism2_download_data *param); | |
140 | static int prism2_download_genesis(local_info_t *local, | |
141 | struct prism2_download_data *param); | |
142 | static int prism2_get_ram_size(local_info_t *local); | |
143 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ | |
144 | ||
145 | ||
146 | ||
147 | ||
148 | #ifndef final_version | |
149 | /* magic value written to SWSUPPORT0 reg. for detecting whether card is still | |
150 | * present */ | |
151 | #define HFA384X_MAGIC 0x8A32 | |
152 | #endif | |
153 | ||
154 | ||
155 | static u16 hfa384x_read_reg(struct net_device *dev, u16 reg) | |
156 | { | |
157 | return HFA384X_INW(reg); | |
158 | } | |
159 | ||
160 | ||
161 | static void hfa384x_read_regs(struct net_device *dev, | |
162 | struct hfa384x_regs *regs) | |
163 | { | |
164 | regs->cmd = HFA384X_INW(HFA384X_CMD_OFF); | |
165 | regs->evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); | |
166 | regs->offset0 = HFA384X_INW(HFA384X_OFFSET0_OFF); | |
167 | regs->offset1 = HFA384X_INW(HFA384X_OFFSET1_OFF); | |
168 | regs->swsupport0 = HFA384X_INW(HFA384X_SWSUPPORT0_OFF); | |
169 | } | |
170 | ||
171 | ||
172 | /** | |
173 | * __hostap_cmd_queue_free - Free Prism2 command queue entry (private) | |
174 | * @local: pointer to private Host AP driver data | |
175 | * @entry: Prism2 command queue entry to be freed | |
176 | * @del_req: request the entry to be removed | |
177 | * | |
178 | * Internal helper function for freeing Prism2 command queue entries. | |
179 | * Caller must have acquired local->cmdlock before calling this function. | |
180 | */ | |
181 | static inline void __hostap_cmd_queue_free(local_info_t *local, | |
182 | struct hostap_cmd_queue *entry, | |
183 | int del_req) | |
184 | { | |
185 | if (del_req) { | |
186 | entry->del_req = 1; | |
187 | if (!list_empty(&entry->list)) { | |
188 | list_del_init(&entry->list); | |
189 | local->cmd_queue_len--; | |
190 | } | |
191 | } | |
192 | ||
193 | if (atomic_dec_and_test(&entry->usecnt) && entry->del_req) | |
194 | kfree(entry); | |
195 | } | |
196 | ||
197 | ||
198 | /** | |
199 | * hostap_cmd_queue_free - Free Prism2 command queue entry | |
200 | * @local: pointer to private Host AP driver data | |
201 | * @entry: Prism2 command queue entry to be freed | |
202 | * @del_req: request the entry to be removed | |
203 | * | |
204 | * Free a Prism2 command queue entry. | |
205 | */ | |
206 | static inline void hostap_cmd_queue_free(local_info_t *local, | |
207 | struct hostap_cmd_queue *entry, | |
208 | int del_req) | |
209 | { | |
210 | unsigned long flags; | |
211 | ||
212 | spin_lock_irqsave(&local->cmdlock, flags); | |
213 | __hostap_cmd_queue_free(local, entry, del_req); | |
214 | spin_unlock_irqrestore(&local->cmdlock, flags); | |
215 | } | |
216 | ||
217 | ||
218 | /** | |
219 | * prism2_clear_cmd_queue - Free all pending Prism2 command queue entries | |
220 | * @local: pointer to private Host AP driver data | |
221 | */ | |
222 | static void prism2_clear_cmd_queue(local_info_t *local) | |
223 | { | |
224 | struct list_head *ptr, *n; | |
225 | unsigned long flags; | |
226 | struct hostap_cmd_queue *entry; | |
227 | ||
228 | spin_lock_irqsave(&local->cmdlock, flags); | |
229 | list_for_each_safe(ptr, n, &local->cmd_queue) { | |
230 | entry = list_entry(ptr, struct hostap_cmd_queue, list); | |
231 | atomic_inc(&entry->usecnt); | |
232 | printk(KERN_DEBUG "%s: removed pending cmd_queue entry " | |
233 | "(type=%d, cmd=0x%04x, param0=0x%04x)\n", | |
234 | local->dev->name, entry->type, entry->cmd, | |
235 | entry->param0); | |
236 | __hostap_cmd_queue_free(local, entry, 1); | |
237 | } | |
238 | if (local->cmd_queue_len) { | |
239 | /* This should not happen; print debug message and clear | |
240 | * queue length. */ | |
241 | printk(KERN_DEBUG "%s: cmd_queue_len (%d) not zero after " | |
242 | "flush\n", local->dev->name, local->cmd_queue_len); | |
243 | local->cmd_queue_len = 0; | |
244 | } | |
245 | spin_unlock_irqrestore(&local->cmdlock, flags); | |
246 | } | |
247 | ||
248 | ||
249 | /** | |
250 | * hfa384x_cmd_issue - Issue a Prism2 command to the hardware | |
251 | * @dev: pointer to net_device | |
252 | * @entry: Prism2 command queue entry to be issued | |
253 | */ | |
858119e1 | 254 | static int hfa384x_cmd_issue(struct net_device *dev, |
ff1d2767 JM |
255 | struct hostap_cmd_queue *entry) |
256 | { | |
257 | struct hostap_interface *iface; | |
258 | local_info_t *local; | |
259 | int tries; | |
260 | u16 reg; | |
261 | unsigned long flags; | |
262 | ||
263 | iface = netdev_priv(dev); | |
264 | local = iface->local; | |
265 | ||
266 | if (local->func->card_present && !local->func->card_present(local)) | |
267 | return -ENODEV; | |
268 | ||
269 | if (entry->issued) { | |
270 | printk(KERN_DEBUG "%s: driver bug - re-issuing command @%p\n", | |
271 | dev->name, entry); | |
272 | } | |
273 | ||
274 | /* wait until busy bit is clear; this should always be clear since the | |
275 | * commands are serialized */ | |
276 | tries = HFA384X_CMD_BUSY_TIMEOUT; | |
277 | while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { | |
278 | tries--; | |
279 | udelay(1); | |
280 | } | |
281 | #ifndef final_version | |
282 | if (tries != HFA384X_CMD_BUSY_TIMEOUT) { | |
283 | prism2_io_debug_error(dev, 1); | |
284 | printk(KERN_DEBUG "%s: hfa384x_cmd_issue: cmd reg was busy " | |
285 | "for %d usec\n", dev->name, | |
286 | HFA384X_CMD_BUSY_TIMEOUT - tries); | |
287 | } | |
288 | #endif | |
289 | if (tries == 0) { | |
290 | reg = HFA384X_INW(HFA384X_CMD_OFF); | |
291 | prism2_io_debug_error(dev, 2); | |
292 | printk(KERN_DEBUG "%s: hfa384x_cmd_issue - timeout - " | |
293 | "reg=0x%04x\n", dev->name, reg); | |
294 | return -ETIMEDOUT; | |
295 | } | |
296 | ||
297 | /* write command */ | |
298 | spin_lock_irqsave(&local->cmdlock, flags); | |
299 | HFA384X_OUTW(entry->param0, HFA384X_PARAM0_OFF); | |
300 | HFA384X_OUTW(entry->param1, HFA384X_PARAM1_OFF); | |
301 | HFA384X_OUTW(entry->cmd, HFA384X_CMD_OFF); | |
302 | entry->issued = 1; | |
303 | spin_unlock_irqrestore(&local->cmdlock, flags); | |
304 | ||
305 | return 0; | |
306 | } | |
307 | ||
308 | ||
309 | /** | |
310 | * hfa384x_cmd - Issue a Prism2 command and wait (sleep) for completion | |
311 | * @dev: pointer to net_device | |
312 | * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) | |
313 | * @param0: value for Param0 register | |
314 | * @param1: value for Param1 register (pointer; %NULL if not used) | |
315 | * @resp0: pointer for Resp0 data or %NULL if Resp0 is not needed | |
316 | * | |
317 | * Issue given command (possibly after waiting in command queue) and sleep | |
318 | * until the command is completed (or timed out or interrupted). This can be | |
319 | * called only from user process context. | |
320 | */ | |
321 | static int hfa384x_cmd(struct net_device *dev, u16 cmd, u16 param0, | |
322 | u16 *param1, u16 *resp0) | |
323 | { | |
324 | struct hostap_interface *iface; | |
325 | local_info_t *local; | |
326 | int err, res, issue, issued = 0; | |
327 | unsigned long flags; | |
328 | struct hostap_cmd_queue *entry; | |
329 | DECLARE_WAITQUEUE(wait, current); | |
330 | ||
331 | iface = netdev_priv(dev); | |
332 | local = iface->local; | |
333 | ||
334 | if (in_interrupt()) { | |
335 | printk(KERN_DEBUG "%s: hfa384x_cmd called from interrupt " | |
336 | "context\n", dev->name); | |
337 | return -1; | |
338 | } | |
339 | ||
340 | if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN) { | |
341 | printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", | |
342 | dev->name); | |
343 | return -1; | |
344 | } | |
345 | ||
346 | if (signal_pending(current)) | |
347 | return -EINTR; | |
348 | ||
b0471bb7 | 349 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); |
e404decb | 350 | if (entry == NULL) |
ff1d2767 | 351 | return -ENOMEM; |
e404decb | 352 | |
ff1d2767 JM |
353 | atomic_set(&entry->usecnt, 1); |
354 | entry->type = CMD_SLEEP; | |
355 | entry->cmd = cmd; | |
356 | entry->param0 = param0; | |
357 | if (param1) | |
358 | entry->param1 = *param1; | |
359 | init_waitqueue_head(&entry->compl); | |
360 | ||
361 | /* prepare to wait for command completion event, but do not sleep yet | |
362 | */ | |
363 | add_wait_queue(&entry->compl, &wait); | |
364 | set_current_state(TASK_INTERRUPTIBLE); | |
365 | ||
366 | spin_lock_irqsave(&local->cmdlock, flags); | |
367 | issue = list_empty(&local->cmd_queue); | |
368 | if (issue) | |
369 | entry->issuing = 1; | |
370 | list_add_tail(&entry->list, &local->cmd_queue); | |
371 | local->cmd_queue_len++; | |
372 | spin_unlock_irqrestore(&local->cmdlock, flags); | |
373 | ||
374 | err = 0; | |
375 | if (!issue) | |
376 | goto wait_completion; | |
377 | ||
378 | if (signal_pending(current)) | |
379 | err = -EINTR; | |
380 | ||
381 | if (!err) { | |
382 | if (hfa384x_cmd_issue(dev, entry)) | |
383 | err = -ETIMEDOUT; | |
384 | else | |
385 | issued = 1; | |
386 | } | |
387 | ||
388 | wait_completion: | |
389 | if (!err && entry->type != CMD_COMPLETED) { | |
390 | /* sleep until command is completed or timed out */ | |
391 | res = schedule_timeout(2 * HZ); | |
392 | } else | |
393 | res = -1; | |
394 | ||
395 | if (!err && signal_pending(current)) | |
396 | err = -EINTR; | |
397 | ||
398 | if (err && issued) { | |
399 | /* the command was issued, so a CmdCompl event should occur | |
400 | * soon; however, there's a pending signal and | |
401 | * schedule_timeout() would be interrupted; wait a short period | |
402 | * of time to avoid removing entry from the list before | |
403 | * CmdCompl event */ | |
404 | udelay(300); | |
405 | } | |
406 | ||
407 | set_current_state(TASK_RUNNING); | |
408 | remove_wait_queue(&entry->compl, &wait); | |
409 | ||
410 | /* If entry->list is still in the list, it must be removed | |
411 | * first and in this case prism2_cmd_ev() does not yet have | |
412 | * local reference to it, and the data can be kfree()'d | |
413 | * here. If the command completion event is still generated, | |
414 | * it will be assigned to next (possibly) pending command, but | |
415 | * the driver will reset the card anyway due to timeout | |
416 | * | |
417 | * If the entry is not in the list prism2_cmd_ev() has a local | |
418 | * reference to it, but keeps cmdlock as long as the data is | |
419 | * needed, so the data can be kfree()'d here. */ | |
420 | ||
421 | /* FIX: if the entry->list is in the list, it has not been completed | |
422 | * yet, so removing it here is somewhat wrong.. this could cause | |
423 | * references to freed memory and next list_del() causing NULL pointer | |
424 | * dereference.. it would probably be better to leave the entry in the | |
425 | * list and the list should be emptied during hw reset */ | |
426 | ||
427 | spin_lock_irqsave(&local->cmdlock, flags); | |
428 | if (!list_empty(&entry->list)) { | |
429 | printk(KERN_DEBUG "%s: hfa384x_cmd: entry still in list? " | |
430 | "(entry=%p, type=%d, res=%d)\n", dev->name, entry, | |
431 | entry->type, res); | |
432 | list_del_init(&entry->list); | |
433 | local->cmd_queue_len--; | |
434 | } | |
435 | spin_unlock_irqrestore(&local->cmdlock, flags); | |
436 | ||
437 | if (err) { | |
438 | printk(KERN_DEBUG "%s: hfa384x_cmd: interrupted; err=%d\n", | |
439 | dev->name, err); | |
440 | res = err; | |
441 | goto done; | |
442 | } | |
443 | ||
444 | if (entry->type != CMD_COMPLETED) { | |
445 | u16 reg = HFA384X_INW(HFA384X_EVSTAT_OFF); | |
446 | printk(KERN_DEBUG "%s: hfa384x_cmd: command was not " | |
447 | "completed (res=%d, entry=%p, type=%d, cmd=0x%04x, " | |
448 | "param0=0x%04x, EVSTAT=%04x INTEN=%04x)\n", dev->name, | |
449 | res, entry, entry->type, entry->cmd, entry->param0, reg, | |
450 | HFA384X_INW(HFA384X_INTEN_OFF)); | |
451 | if (reg & HFA384X_EV_CMD) { | |
452 | /* Command completion event is pending, but the | |
453 | * interrupt was not delivered - probably an issue | |
454 | * with pcmcia-cs configuration. */ | |
455 | printk(KERN_WARNING "%s: interrupt delivery does not " | |
456 | "seem to work\n", dev->name); | |
457 | } | |
458 | prism2_io_debug_error(dev, 3); | |
459 | res = -ETIMEDOUT; | |
460 | goto done; | |
461 | } | |
462 | ||
463 | if (resp0 != NULL) | |
464 | *resp0 = entry->resp0; | |
465 | #ifndef final_version | |
466 | if (entry->res) { | |
467 | printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x, " | |
468 | "resp0=0x%04x\n", | |
469 | dev->name, cmd, entry->res, entry->resp0); | |
470 | } | |
471 | #endif /* final_version */ | |
472 | ||
473 | res = entry->res; | |
474 | done: | |
475 | hostap_cmd_queue_free(local, entry, 1); | |
476 | return res; | |
477 | } | |
478 | ||
479 | ||
480 | /** | |
481 | * hfa384x_cmd_callback - Issue a Prism2 command; callback when completed | |
482 | * @dev: pointer to net_device | |
483 | * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) | |
484 | * @param0: value for Param0 register | |
485 | * @callback: command completion callback function (%NULL = no callback) | |
b15eff26 | 486 | * @context: context data to be given to the callback function |
ff1d2767 JM |
487 | * |
488 | * Issue given command (possibly after waiting in command queue) and use | |
489 | * callback function to indicate command completion. This can be called both | |
490 | * from user and interrupt context. The callback function will be called in | |
491 | * hardware IRQ context. It can be %NULL, when no function is called when | |
492 | * command is completed. | |
493 | */ | |
494 | static int hfa384x_cmd_callback(struct net_device *dev, u16 cmd, u16 param0, | |
495 | void (*callback)(struct net_device *dev, | |
b15eff26 | 496 | long context, u16 resp0, |
ff1d2767 | 497 | u16 status), |
b15eff26 | 498 | long context) |
ff1d2767 JM |
499 | { |
500 | struct hostap_interface *iface; | |
501 | local_info_t *local; | |
502 | int issue, ret; | |
503 | unsigned long flags; | |
504 | struct hostap_cmd_queue *entry; | |
505 | ||
506 | iface = netdev_priv(dev); | |
507 | local = iface->local; | |
508 | ||
509 | if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN + 2) { | |
510 | printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", | |
511 | dev->name); | |
512 | return -1; | |
513 | } | |
514 | ||
b0471bb7 | 515 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); |
e404decb | 516 | if (entry == NULL) |
ff1d2767 | 517 | return -ENOMEM; |
e404decb | 518 | |
ff1d2767 JM |
519 | atomic_set(&entry->usecnt, 1); |
520 | entry->type = CMD_CALLBACK; | |
521 | entry->cmd = cmd; | |
522 | entry->param0 = param0; | |
523 | entry->callback = callback; | |
524 | entry->context = context; | |
525 | ||
526 | spin_lock_irqsave(&local->cmdlock, flags); | |
527 | issue = list_empty(&local->cmd_queue); | |
528 | if (issue) | |
529 | entry->issuing = 1; | |
530 | list_add_tail(&entry->list, &local->cmd_queue); | |
531 | local->cmd_queue_len++; | |
532 | spin_unlock_irqrestore(&local->cmdlock, flags); | |
533 | ||
534 | if (issue && hfa384x_cmd_issue(dev, entry)) | |
535 | ret = -ETIMEDOUT; | |
536 | else | |
537 | ret = 0; | |
538 | ||
539 | hostap_cmd_queue_free(local, entry, ret); | |
540 | ||
541 | return ret; | |
542 | } | |
543 | ||
544 | ||
545 | /** | |
546 | * __hfa384x_cmd_no_wait - Issue a Prism2 command (private) | |
547 | * @dev: pointer to net_device | |
548 | * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) | |
549 | * @param0: value for Param0 register | |
550 | * @io_debug_num: I/O debug error number | |
551 | * | |
552 | * Shared helper function for hfa384x_cmd_wait() and hfa384x_cmd_no_wait(). | |
553 | */ | |
554 | static int __hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, u16 param0, | |
555 | int io_debug_num) | |
556 | { | |
557 | int tries; | |
558 | u16 reg; | |
559 | ||
560 | /* wait until busy bit is clear; this should always be clear since the | |
561 | * commands are serialized */ | |
562 | tries = HFA384X_CMD_BUSY_TIMEOUT; | |
563 | while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { | |
564 | tries--; | |
565 | udelay(1); | |
566 | } | |
567 | if (tries == 0) { | |
568 | reg = HFA384X_INW(HFA384X_CMD_OFF); | |
569 | prism2_io_debug_error(dev, io_debug_num); | |
570 | printk(KERN_DEBUG "%s: __hfa384x_cmd_no_wait(%d) - timeout - " | |
571 | "reg=0x%04x\n", dev->name, io_debug_num, reg); | |
572 | return -ETIMEDOUT; | |
573 | } | |
574 | ||
575 | /* write command */ | |
576 | HFA384X_OUTW(param0, HFA384X_PARAM0_OFF); | |
577 | HFA384X_OUTW(cmd, HFA384X_CMD_OFF); | |
578 | ||
579 | return 0; | |
580 | } | |
581 | ||
582 | ||
583 | /** | |
584 | * hfa384x_cmd_wait - Issue a Prism2 command and busy wait for completion | |
585 | * @dev: pointer to net_device | |
586 | * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) | |
587 | * @param0: value for Param0 register | |
588 | */ | |
589 | static int hfa384x_cmd_wait(struct net_device *dev, u16 cmd, u16 param0) | |
590 | { | |
591 | int res, tries; | |
592 | u16 reg; | |
593 | ||
594 | res = __hfa384x_cmd_no_wait(dev, cmd, param0, 4); | |
595 | if (res) | |
596 | return res; | |
597 | ||
598 | /* wait for command completion */ | |
599 | if ((cmd & HFA384X_CMDCODE_MASK) == HFA384X_CMDCODE_DOWNLOAD) | |
600 | tries = HFA384X_DL_COMPL_TIMEOUT; | |
601 | else | |
602 | tries = HFA384X_CMD_COMPL_TIMEOUT; | |
603 | ||
604 | while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && | |
605 | tries > 0) { | |
606 | tries--; | |
607 | udelay(10); | |
608 | } | |
609 | if (tries == 0) { | |
610 | reg = HFA384X_INW(HFA384X_EVSTAT_OFF); | |
611 | prism2_io_debug_error(dev, 5); | |
612 | printk(KERN_DEBUG "%s: hfa384x_cmd_wait - timeout2 - " | |
613 | "reg=0x%04x\n", dev->name, reg); | |
614 | return -ETIMEDOUT; | |
615 | } | |
616 | ||
617 | res = (HFA384X_INW(HFA384X_STATUS_OFF) & | |
618 | (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | BIT(9) | | |
619 | BIT(8))) >> 8; | |
620 | #ifndef final_version | |
621 | if (res) { | |
622 | printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x\n", | |
623 | dev->name, cmd, res); | |
624 | } | |
625 | #endif | |
626 | ||
627 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); | |
628 | ||
629 | return res; | |
630 | } | |
631 | ||
632 | ||
633 | /** | |
634 | * hfa384x_cmd_no_wait - Issue a Prism2 command; do not wait for completion | |
635 | * @dev: pointer to net_device | |
636 | * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) | |
637 | * @param0: value for Param0 register | |
638 | */ | |
639 | static inline int hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, | |
640 | u16 param0) | |
641 | { | |
642 | return __hfa384x_cmd_no_wait(dev, cmd, param0, 6); | |
643 | } | |
644 | ||
645 | ||
646 | /** | |
647 | * prism2_cmd_ev - Prism2 command completion event handler | |
648 | * @dev: pointer to net_device | |
649 | * | |
650 | * Interrupt handler for command completion events. Called by the main | |
651 | * interrupt handler in hardware IRQ context. Read Resp0 and status registers | |
652 | * from the hardware and ACK the event. Depending on the issued command type | |
653 | * either wake up the sleeping process that is waiting for command completion | |
654 | * or call the callback function. Issue the next command, if one is pending. | |
655 | */ | |
656 | static void prism2_cmd_ev(struct net_device *dev) | |
657 | { | |
658 | struct hostap_interface *iface; | |
659 | local_info_t *local; | |
660 | struct hostap_cmd_queue *entry = NULL; | |
661 | ||
662 | iface = netdev_priv(dev); | |
663 | local = iface->local; | |
664 | ||
665 | spin_lock(&local->cmdlock); | |
666 | if (!list_empty(&local->cmd_queue)) { | |
667 | entry = list_entry(local->cmd_queue.next, | |
668 | struct hostap_cmd_queue, list); | |
669 | atomic_inc(&entry->usecnt); | |
670 | list_del_init(&entry->list); | |
671 | local->cmd_queue_len--; | |
672 | ||
673 | if (!entry->issued) { | |
674 | printk(KERN_DEBUG "%s: Command completion event, but " | |
675 | "cmd not issued\n", dev->name); | |
676 | __hostap_cmd_queue_free(local, entry, 1); | |
677 | entry = NULL; | |
678 | } | |
679 | } | |
680 | spin_unlock(&local->cmdlock); | |
681 | ||
682 | if (!entry) { | |
683 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); | |
684 | printk(KERN_DEBUG "%s: Command completion event, but no " | |
685 | "pending commands\n", dev->name); | |
686 | return; | |
687 | } | |
688 | ||
689 | entry->resp0 = HFA384X_INW(HFA384X_RESP0_OFF); | |
690 | entry->res = (HFA384X_INW(HFA384X_STATUS_OFF) & | |
691 | (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | | |
692 | BIT(9) | BIT(8))) >> 8; | |
693 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); | |
694 | ||
695 | /* TODO: rest of the CmdEv handling could be moved to tasklet */ | |
696 | if (entry->type == CMD_SLEEP) { | |
697 | entry->type = CMD_COMPLETED; | |
698 | wake_up_interruptible(&entry->compl); | |
699 | } else if (entry->type == CMD_CALLBACK) { | |
700 | if (entry->callback) | |
701 | entry->callback(dev, entry->context, entry->resp0, | |
702 | entry->res); | |
703 | } else { | |
704 | printk(KERN_DEBUG "%s: Invalid command completion type %d\n", | |
705 | dev->name, entry->type); | |
706 | } | |
707 | hostap_cmd_queue_free(local, entry, 1); | |
708 | ||
709 | /* issue next command, if pending */ | |
710 | entry = NULL; | |
711 | spin_lock(&local->cmdlock); | |
712 | if (!list_empty(&local->cmd_queue)) { | |
713 | entry = list_entry(local->cmd_queue.next, | |
714 | struct hostap_cmd_queue, list); | |
715 | if (entry->issuing) { | |
716 | /* hfa384x_cmd() has already started issuing this | |
717 | * command, so do not start here */ | |
718 | entry = NULL; | |
719 | } | |
720 | if (entry) | |
721 | atomic_inc(&entry->usecnt); | |
722 | } | |
723 | spin_unlock(&local->cmdlock); | |
724 | ||
725 | if (entry) { | |
726 | /* issue next command; if command issuing fails, remove the | |
727 | * entry from cmd_queue */ | |
728 | int res = hfa384x_cmd_issue(dev, entry); | |
729 | spin_lock(&local->cmdlock); | |
730 | __hostap_cmd_queue_free(local, entry, res); | |
731 | spin_unlock(&local->cmdlock); | |
732 | } | |
733 | } | |
734 | ||
735 | ||
858119e1 | 736 | static int hfa384x_wait_offset(struct net_device *dev, u16 o_off) |
ff1d2767 JM |
737 | { |
738 | int tries = HFA384X_BAP_BUSY_TIMEOUT; | |
739 | int res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; | |
740 | ||
741 | while (res && tries > 0) { | |
742 | tries--; | |
743 | udelay(1); | |
744 | res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; | |
745 | } | |
746 | return res; | |
747 | } | |
748 | ||
749 | ||
750 | /* Offset must be even */ | |
751 | static int hfa384x_setup_bap(struct net_device *dev, u16 bap, u16 id, | |
752 | int offset) | |
753 | { | |
754 | u16 o_off, s_off; | |
755 | int ret = 0; | |
756 | ||
757 | if (offset % 2 || bap > 1) | |
758 | return -EINVAL; | |
759 | ||
760 | if (bap == BAP1) { | |
761 | o_off = HFA384X_OFFSET1_OFF; | |
762 | s_off = HFA384X_SELECT1_OFF; | |
763 | } else { | |
764 | o_off = HFA384X_OFFSET0_OFF; | |
765 | s_off = HFA384X_SELECT0_OFF; | |
766 | } | |
767 | ||
768 | if (hfa384x_wait_offset(dev, o_off)) { | |
769 | prism2_io_debug_error(dev, 7); | |
770 | printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout before\n", | |
771 | dev->name); | |
772 | ret = -ETIMEDOUT; | |
773 | goto out; | |
774 | } | |
775 | ||
776 | HFA384X_OUTW(id, s_off); | |
777 | HFA384X_OUTW(offset, o_off); | |
778 | ||
779 | if (hfa384x_wait_offset(dev, o_off)) { | |
780 | prism2_io_debug_error(dev, 8); | |
781 | printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout after\n", | |
782 | dev->name); | |
783 | ret = -ETIMEDOUT; | |
784 | goto out; | |
785 | } | |
786 | #ifndef final_version | |
787 | if (HFA384X_INW(o_off) & HFA384X_OFFSET_ERR) { | |
788 | prism2_io_debug_error(dev, 9); | |
789 | printk(KERN_DEBUG "%s: hfa384x_setup_bap - offset error " | |
790 | "(%d,0x04%x,%d); reg=0x%04x\n", | |
791 | dev->name, bap, id, offset, HFA384X_INW(o_off)); | |
792 | ret = -EINVAL; | |
793 | } | |
794 | #endif | |
795 | ||
796 | out: | |
797 | return ret; | |
798 | } | |
799 | ||
800 | ||
801 | static int hfa384x_get_rid(struct net_device *dev, u16 rid, void *buf, int len, | |
802 | int exact_len) | |
803 | { | |
804 | struct hostap_interface *iface; | |
805 | local_info_t *local; | |
806 | int res, rlen = 0; | |
807 | struct hfa384x_rid_hdr rec; | |
808 | ||
809 | iface = netdev_priv(dev); | |
810 | local = iface->local; | |
811 | ||
812 | if (local->no_pri) { | |
813 | printk(KERN_DEBUG "%s: cannot get RID %04x (len=%d) - no PRI " | |
814 | "f/w\n", dev->name, rid, len); | |
815 | return -ENOTTY; /* Well.. not really correct, but return | |
816 | * something unique enough.. */ | |
817 | } | |
818 | ||
819 | if ((local->func->card_present && !local->func->card_present(local)) || | |
820 | local->hw_downloading) | |
821 | return -ENODEV; | |
822 | ||
3623060a | 823 | res = mutex_lock_interruptible(&local->rid_bap_mtx); |
ff1d2767 JM |
824 | if (res) |
825 | return res; | |
826 | ||
827 | res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS, rid, NULL, NULL); | |
828 | if (res) { | |
829 | printk(KERN_DEBUG "%s: hfa384x_get_rid: CMDCODE_ACCESS failed " | |
830 | "(res=%d, rid=%04x, len=%d)\n", | |
831 | dev->name, res, rid, len); | |
3623060a | 832 | mutex_unlock(&local->rid_bap_mtx); |
ff1d2767 JM |
833 | return res; |
834 | } | |
835 | ||
836 | spin_lock_bh(&local->baplock); | |
837 | ||
838 | res = hfa384x_setup_bap(dev, BAP0, rid, 0); | |
48dc5fb3 AB |
839 | if (res) |
840 | goto unlock; | |
841 | ||
842 | res = hfa384x_from_bap(dev, BAP0, &rec, sizeof(rec)); | |
843 | if (res) | |
844 | goto unlock; | |
ff1d2767 JM |
845 | |
846 | if (le16_to_cpu(rec.len) == 0) { | |
847 | /* RID not available */ | |
848 | res = -ENODATA; | |
48dc5fb3 | 849 | goto unlock; |
ff1d2767 JM |
850 | } |
851 | ||
852 | rlen = (le16_to_cpu(rec.len) - 1) * 2; | |
48dc5fb3 | 853 | if (exact_len && rlen != len) { |
ff1d2767 JM |
854 | printk(KERN_DEBUG "%s: hfa384x_get_rid - RID len mismatch: " |
855 | "rid=0x%04x, len=%d (expected %d)\n", | |
856 | dev->name, rid, rlen, len); | |
857 | res = -ENODATA; | |
858 | } | |
859 | ||
48dc5fb3 | 860 | res = hfa384x_from_bap(dev, BAP0, buf, len); |
ff1d2767 | 861 | |
48dc5fb3 | 862 | unlock: |
ff1d2767 | 863 | spin_unlock_bh(&local->baplock); |
3623060a | 864 | mutex_unlock(&local->rid_bap_mtx); |
ff1d2767 JM |
865 | |
866 | if (res) { | |
867 | if (res != -ENODATA) | |
868 | printk(KERN_DEBUG "%s: hfa384x_get_rid (rid=%04x, " | |
869 | "len=%d) - failed - res=%d\n", dev->name, rid, | |
870 | len, res); | |
871 | if (res == -ETIMEDOUT) | |
872 | prism2_hw_reset(dev); | |
873 | return res; | |
874 | } | |
875 | ||
876 | return rlen; | |
877 | } | |
878 | ||
879 | ||
880 | static int hfa384x_set_rid(struct net_device *dev, u16 rid, void *buf, int len) | |
881 | { | |
882 | struct hostap_interface *iface; | |
883 | local_info_t *local; | |
884 | struct hfa384x_rid_hdr rec; | |
885 | int res; | |
886 | ||
887 | iface = netdev_priv(dev); | |
888 | local = iface->local; | |
889 | ||
890 | if (local->no_pri) { | |
891 | printk(KERN_DEBUG "%s: cannot set RID %04x (len=%d) - no PRI " | |
892 | "f/w\n", dev->name, rid, len); | |
893 | return -ENOTTY; /* Well.. not really correct, but return | |
894 | * something unique enough.. */ | |
895 | } | |
896 | ||
897 | if ((local->func->card_present && !local->func->card_present(local)) || | |
898 | local->hw_downloading) | |
899 | return -ENODEV; | |
900 | ||
901 | rec.rid = cpu_to_le16(rid); | |
902 | /* RID len in words and +1 for rec.rid */ | |
903 | rec.len = cpu_to_le16(len / 2 + len % 2 + 1); | |
904 | ||
3623060a | 905 | res = mutex_lock_interruptible(&local->rid_bap_mtx); |
ff1d2767 JM |
906 | if (res) |
907 | return res; | |
908 | ||
909 | spin_lock_bh(&local->baplock); | |
910 | res = hfa384x_setup_bap(dev, BAP0, rid, 0); | |
911 | if (!res) | |
912 | res = hfa384x_to_bap(dev, BAP0, &rec, sizeof(rec)); | |
913 | if (!res) | |
914 | res = hfa384x_to_bap(dev, BAP0, buf, len); | |
915 | spin_unlock_bh(&local->baplock); | |
916 | ||
917 | if (res) { | |
918 | printk(KERN_DEBUG "%s: hfa384x_set_rid (rid=%04x, len=%d) - " | |
919 | "failed - res=%d\n", dev->name, rid, len, res); | |
3623060a | 920 | mutex_unlock(&local->rid_bap_mtx); |
ff1d2767 JM |
921 | return res; |
922 | } | |
923 | ||
924 | res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS_WRITE, rid, NULL, NULL); | |
3623060a | 925 | mutex_unlock(&local->rid_bap_mtx); |
971d1e69 | 926 | |
ff1d2767 JM |
927 | if (res) { |
928 | printk(KERN_DEBUG "%s: hfa384x_set_rid: CMDCODE_ACCESS_WRITE " | |
929 | "failed (res=%d, rid=%04x, len=%d)\n", | |
930 | dev->name, res, rid, len); | |
ff1d2767 | 931 | |
971d1e69 AB |
932 | if (res == -ETIMEDOUT) |
933 | prism2_hw_reset(dev); | |
934 | } | |
ff1d2767 JM |
935 | |
936 | return res; | |
937 | } | |
938 | ||
939 | ||
940 | static void hfa384x_disable_interrupts(struct net_device *dev) | |
941 | { | |
942 | /* disable interrupts and clear event status */ | |
943 | HFA384X_OUTW(0, HFA384X_INTEN_OFF); | |
944 | HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); | |
945 | } | |
946 | ||
947 | ||
948 | static void hfa384x_enable_interrupts(struct net_device *dev) | |
949 | { | |
950 | /* ack pending events and enable interrupts from selected events */ | |
951 | HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); | |
952 | HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); | |
953 | } | |
954 | ||
955 | ||
956 | static void hfa384x_events_no_bap0(struct net_device *dev) | |
957 | { | |
958 | HFA384X_OUTW(HFA384X_EVENT_MASK & ~HFA384X_BAP0_EVENTS, | |
959 | HFA384X_INTEN_OFF); | |
960 | } | |
961 | ||
962 | ||
963 | static void hfa384x_events_all(struct net_device *dev) | |
964 | { | |
965 | HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); | |
966 | } | |
967 | ||
968 | ||
969 | static void hfa384x_events_only_cmd(struct net_device *dev) | |
970 | { | |
971 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_INTEN_OFF); | |
972 | } | |
973 | ||
974 | ||
975 | static u16 hfa384x_allocate_fid(struct net_device *dev, int len) | |
976 | { | |
977 | u16 fid; | |
978 | unsigned long delay; | |
979 | ||
980 | /* FIX: this could be replace with hfa384x_cmd() if the Alloc event | |
981 | * below would be handled like CmdCompl event (sleep here, wake up from | |
982 | * interrupt handler */ | |
983 | if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_ALLOC, len)) { | |
984 | printk(KERN_DEBUG "%s: cannot allocate fid, len=%d\n", | |
985 | dev->name, len); | |
986 | return 0xffff; | |
987 | } | |
988 | ||
989 | delay = jiffies + HFA384X_ALLOC_COMPL_TIMEOUT; | |
990 | while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC) && | |
991 | time_before(jiffies, delay)) | |
992 | yield(); | |
993 | if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC)) { | |
994 | printk("%s: fid allocate, len=%d - timeout\n", dev->name, len); | |
995 | return 0xffff; | |
996 | } | |
997 | ||
998 | fid = HFA384X_INW(HFA384X_ALLOCFID_OFF); | |
999 | HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); | |
1000 | ||
1001 | return fid; | |
1002 | } | |
1003 | ||
1004 | ||
1005 | static int prism2_reset_port(struct net_device *dev) | |
1006 | { | |
1007 | struct hostap_interface *iface; | |
1008 | local_info_t *local; | |
1009 | int res; | |
1010 | ||
1011 | iface = netdev_priv(dev); | |
1012 | local = iface->local; | |
1013 | ||
1014 | if (!local->dev_enabled) | |
1015 | return 0; | |
1016 | ||
1017 | res = hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, | |
1018 | NULL, NULL); | |
1019 | if (res) | |
1020 | printk(KERN_DEBUG "%s: reset port failed to disable port\n", | |
1021 | dev->name); | |
1022 | else { | |
1023 | res = hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, | |
1024 | NULL, NULL); | |
1025 | if (res) | |
1026 | printk(KERN_DEBUG "%s: reset port failed to enable " | |
1027 | "port\n", dev->name); | |
1028 | } | |
1029 | ||
1030 | /* It looks like at least some STA firmware versions reset | |
1031 | * fragmentation threshold back to 2346 after enable command. Restore | |
1032 | * the configured value, if it differs from this default. */ | |
1033 | if (local->fragm_threshold != 2346 && | |
1034 | hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, | |
1035 | local->fragm_threshold)) { | |
1036 | printk(KERN_DEBUG "%s: failed to restore fragmentation " | |
1037 | "threshold (%d) after Port0 enable\n", | |
1038 | dev->name, local->fragm_threshold); | |
1039 | } | |
1040 | ||
9b5cce07 PR |
1041 | /* Some firmwares lose antenna selection settings on reset */ |
1042 | (void) hostap_set_antsel(local); | |
1043 | ||
ff1d2767 JM |
1044 | return res; |
1045 | } | |
1046 | ||
1047 | ||
1048 | static int prism2_get_version_info(struct net_device *dev, u16 rid, | |
1049 | const char *txt) | |
1050 | { | |
1051 | struct hfa384x_comp_ident comp; | |
1052 | struct hostap_interface *iface; | |
1053 | local_info_t *local; | |
1054 | ||
1055 | iface = netdev_priv(dev); | |
1056 | local = iface->local; | |
1057 | ||
1058 | if (local->no_pri) { | |
1059 | /* PRI f/w not yet available - cannot read RIDs */ | |
1060 | return -1; | |
1061 | } | |
1062 | if (hfa384x_get_rid(dev, rid, &comp, sizeof(comp), 1) < 0) { | |
1063 | printk(KERN_DEBUG "Could not get RID for component %s\n", txt); | |
1064 | return -1; | |
1065 | } | |
1066 | ||
1067 | printk(KERN_INFO "%s: %s: id=0x%02x v%d.%d.%d\n", dev->name, txt, | |
1068 | __le16_to_cpu(comp.id), __le16_to_cpu(comp.major), | |
1069 | __le16_to_cpu(comp.minor), __le16_to_cpu(comp.variant)); | |
1070 | return 0; | |
1071 | } | |
1072 | ||
1073 | ||
1074 | static int prism2_setup_rids(struct net_device *dev) | |
1075 | { | |
1076 | struct hostap_interface *iface; | |
1077 | local_info_t *local; | |
8a9faf3c | 1078 | __le16 tmp; |
ff1d2767 JM |
1079 | int ret = 0; |
1080 | ||
1081 | iface = netdev_priv(dev); | |
1082 | local = iface->local; | |
1083 | ||
1084 | hostap_set_word(dev, HFA384X_RID_TICKTIME, 2000); | |
1085 | ||
1086 | if (!local->fw_ap) { | |
8a9faf3c AV |
1087 | u16 tmp1 = hostap_get_porttype(local); |
1088 | ret = hostap_set_word(dev, HFA384X_RID_CNFPORTTYPE, tmp1); | |
ff1d2767 JM |
1089 | if (ret) { |
1090 | printk("%s: Port type setting to %d failed\n", | |
8a9faf3c | 1091 | dev->name, tmp1); |
ff1d2767 JM |
1092 | goto fail; |
1093 | } | |
1094 | } | |
1095 | ||
1096 | /* Setting SSID to empty string seems to kill the card in Host AP mode | |
1097 | */ | |
1098 | if (local->iw_mode != IW_MODE_MASTER || local->essid[0] != '\0') { | |
1099 | ret = hostap_set_string(dev, HFA384X_RID_CNFOWNSSID, | |
1100 | local->essid); | |
1101 | if (ret) { | |
1102 | printk("%s: AP own SSID setting failed\n", dev->name); | |
1103 | goto fail; | |
1104 | } | |
1105 | } | |
1106 | ||
1107 | ret = hostap_set_word(dev, HFA384X_RID_CNFMAXDATALEN, | |
1108 | PRISM2_DATA_MAXLEN); | |
1109 | if (ret) { | |
1110 | printk("%s: MAC data length setting to %d failed\n", | |
1111 | dev->name, PRISM2_DATA_MAXLEN); | |
1112 | goto fail; | |
1113 | } | |
1114 | ||
1115 | if (hfa384x_get_rid(dev, HFA384X_RID_CHANNELLIST, &tmp, 2, 1) < 0) { | |
1116 | printk("%s: Channel list read failed\n", dev->name); | |
1117 | ret = -EINVAL; | |
1118 | goto fail; | |
1119 | } | |
8a9faf3c | 1120 | local->channel_mask = le16_to_cpu(tmp); |
ff1d2767 JM |
1121 | |
1122 | if (local->channel < 1 || local->channel > 14 || | |
1123 | !(local->channel_mask & (1 << (local->channel - 1)))) { | |
1124 | printk(KERN_WARNING "%s: Channel setting out of range " | |
1125 | "(%d)!\n", dev->name, local->channel); | |
1126 | ret = -EBUSY; | |
1127 | goto fail; | |
1128 | } | |
1129 | ||
1130 | ret = hostap_set_word(dev, HFA384X_RID_CNFOWNCHANNEL, local->channel); | |
1131 | if (ret) { | |
1132 | printk("%s: Channel setting to %d failed\n", | |
1133 | dev->name, local->channel); | |
1134 | goto fail; | |
1135 | } | |
1136 | ||
1137 | ret = hostap_set_word(dev, HFA384X_RID_CNFBEACONINT, | |
1138 | local->beacon_int); | |
1139 | if (ret) { | |
1140 | printk("%s: Beacon interval setting to %d failed\n", | |
1141 | dev->name, local->beacon_int); | |
1142 | /* this may fail with Symbol/Lucent firmware */ | |
1143 | if (ret == -ETIMEDOUT) | |
1144 | goto fail; | |
1145 | } | |
1146 | ||
1147 | ret = hostap_set_word(dev, HFA384X_RID_CNFOWNDTIMPERIOD, | |
1148 | local->dtim_period); | |
1149 | if (ret) { | |
1150 | printk("%s: DTIM period setting to %d failed\n", | |
1151 | dev->name, local->dtim_period); | |
1152 | /* this may fail with Symbol/Lucent firmware */ | |
1153 | if (ret == -ETIMEDOUT) | |
1154 | goto fail; | |
1155 | } | |
1156 | ||
1157 | ret = hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE, | |
1158 | local->is_promisc); | |
1159 | if (ret) | |
1160 | printk(KERN_INFO "%s: Setting promiscuous mode (%d) failed\n", | |
1161 | dev->name, local->is_promisc); | |
1162 | ||
1163 | if (!local->fw_ap) { | |
1164 | ret = hostap_set_string(dev, HFA384X_RID_CNFDESIREDSSID, | |
1165 | local->essid); | |
1166 | if (ret) { | |
1167 | printk("%s: Desired SSID setting failed\n", dev->name); | |
1168 | goto fail; | |
1169 | } | |
1170 | } | |
1171 | ||
1172 | /* Setup TXRateControl, defaults to allow use of 1, 2, 5.5, and | |
1173 | * 11 Mbps in automatic TX rate fallback and 1 and 2 Mbps as basic | |
1174 | * rates */ | |
1175 | if (local->tx_rate_control == 0) { | |
1176 | local->tx_rate_control = | |
1177 | HFA384X_RATES_1MBPS | | |
1178 | HFA384X_RATES_2MBPS | | |
1179 | HFA384X_RATES_5MBPS | | |
1180 | HFA384X_RATES_11MBPS; | |
1181 | } | |
1182 | if (local->basic_rates == 0) | |
1183 | local->basic_rates = HFA384X_RATES_1MBPS | HFA384X_RATES_2MBPS; | |
1184 | ||
1185 | if (!local->fw_ap) { | |
1186 | ret = hostap_set_word(dev, HFA384X_RID_TXRATECONTROL, | |
1187 | local->tx_rate_control); | |
1188 | if (ret) { | |
1189 | printk("%s: TXRateControl setting to %d failed\n", | |
1190 | dev->name, local->tx_rate_control); | |
1191 | goto fail; | |
1192 | } | |
1193 | ||
1194 | ret = hostap_set_word(dev, HFA384X_RID_CNFSUPPORTEDRATES, | |
1195 | local->tx_rate_control); | |
1196 | if (ret) { | |
1197 | printk("%s: cnfSupportedRates setting to %d failed\n", | |
1198 | dev->name, local->tx_rate_control); | |
1199 | } | |
1200 | ||
1201 | ret = hostap_set_word(dev, HFA384X_RID_CNFBASICRATES, | |
1202 | local->basic_rates); | |
1203 | if (ret) { | |
1204 | printk("%s: cnfBasicRates setting to %d failed\n", | |
1205 | dev->name, local->basic_rates); | |
1206 | } | |
1207 | ||
1208 | ret = hostap_set_word(dev, HFA384X_RID_CREATEIBSS, 1); | |
1209 | if (ret) { | |
1210 | printk("%s: Create IBSS setting to 1 failed\n", | |
1211 | dev->name); | |
1212 | } | |
1213 | } | |
1214 | ||
1215 | if (local->name_set) | |
1216 | (void) hostap_set_string(dev, HFA384X_RID_CNFOWNNAME, | |
1217 | local->name); | |
1218 | ||
1219 | if (hostap_set_encryption(local)) { | |
1220 | printk(KERN_INFO "%s: could not configure encryption\n", | |
1221 | dev->name); | |
1222 | } | |
1223 | ||
1224 | (void) hostap_set_antsel(local); | |
1225 | ||
1226 | if (hostap_set_roaming(local)) { | |
1227 | printk(KERN_INFO "%s: could not set host roaming\n", | |
1228 | dev->name); | |
1229 | } | |
1230 | ||
1231 | if (local->sta_fw_ver >= PRISM2_FW_VER(1,6,3) && | |
1232 | hostap_set_word(dev, HFA384X_RID_CNFENHSECURITY, local->enh_sec)) | |
1233 | printk(KERN_INFO "%s: cnfEnhSecurity setting to 0x%x failed\n", | |
1234 | dev->name, local->enh_sec); | |
1235 | ||
1236 | /* 32-bit tallies were added in STA f/w 0.8.0, but they were apparently | |
1237 | * not working correctly (last seven counters report bogus values). | |
1238 | * This has been fixed in 0.8.2, so enable 32-bit tallies only | |
1239 | * beginning with that firmware version. Another bug fix for 32-bit | |
1240 | * tallies in 1.4.0; should 16-bit tallies be used for some other | |
1241 | * versions, too? */ | |
1242 | if (local->sta_fw_ver >= PRISM2_FW_VER(0,8,2)) { | |
1243 | if (hostap_set_word(dev, HFA384X_RID_CNFTHIRTY2TALLY, 1)) { | |
1244 | printk(KERN_INFO "%s: cnfThirty2Tally setting " | |
1245 | "failed\n", dev->name); | |
1246 | local->tallies32 = 0; | |
1247 | } else | |
1248 | local->tallies32 = 1; | |
1249 | } else | |
1250 | local->tallies32 = 0; | |
1251 | ||
1252 | hostap_set_auth_algs(local); | |
1253 | ||
1254 | if (hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, | |
1255 | local->fragm_threshold)) { | |
1256 | printk(KERN_INFO "%s: setting FragmentationThreshold to %d " | |
1257 | "failed\n", dev->name, local->fragm_threshold); | |
1258 | } | |
1259 | ||
1260 | if (hostap_set_word(dev, HFA384X_RID_RTSTHRESHOLD, | |
1261 | local->rts_threshold)) { | |
1262 | printk(KERN_INFO "%s: setting RTSThreshold to %d failed\n", | |
1263 | dev->name, local->rts_threshold); | |
1264 | } | |
1265 | ||
1266 | if (local->manual_retry_count >= 0 && | |
1267 | hostap_set_word(dev, HFA384X_RID_CNFALTRETRYCOUNT, | |
1268 | local->manual_retry_count)) { | |
1269 | printk(KERN_INFO "%s: setting cnfAltRetryCount to %d failed\n", | |
1270 | dev->name, local->manual_retry_count); | |
1271 | } | |
1272 | ||
1273 | if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1) && | |
1274 | hfa384x_get_rid(dev, HFA384X_RID_CNFDBMADJUST, &tmp, 2, 1) == 2) { | |
1275 | local->rssi_to_dBm = le16_to_cpu(tmp); | |
1276 | } | |
1277 | ||
1278 | if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->wpa && | |
1279 | hostap_set_word(dev, HFA384X_RID_SSNHANDLINGMODE, 1)) { | |
1280 | printk(KERN_INFO "%s: setting ssnHandlingMode to 1 failed\n", | |
1281 | dev->name); | |
1282 | } | |
1283 | ||
1284 | if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->generic_elem && | |
1285 | hfa384x_set_rid(dev, HFA384X_RID_GENERICELEMENT, | |
1286 | local->generic_elem, local->generic_elem_len)) { | |
1287 | printk(KERN_INFO "%s: setting genericElement failed\n", | |
1288 | dev->name); | |
1289 | } | |
1290 | ||
1291 | fail: | |
1292 | return ret; | |
1293 | } | |
1294 | ||
1295 | ||
1296 | static int prism2_hw_init(struct net_device *dev, int initial) | |
1297 | { | |
1298 | struct hostap_interface *iface; | |
1299 | local_info_t *local; | |
1300 | int ret, first = 1; | |
1301 | unsigned long start, delay; | |
1302 | ||
1303 | PDEBUG(DEBUG_FLOW, "prism2_hw_init()\n"); | |
1304 | ||
1305 | iface = netdev_priv(dev); | |
1306 | local = iface->local; | |
1307 | ||
1308 | clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits); | |
1309 | ||
1310 | init: | |
1311 | /* initialize HFA 384x */ | |
1312 | ret = hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_INIT, 0); | |
1313 | if (ret) { | |
1314 | printk(KERN_INFO "%s: first command failed - assuming card " | |
1315 | "does not have primary firmware\n", dev_info); | |
1316 | } | |
1317 | ||
1318 | if (first && (HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { | |
1319 | /* EvStat has Cmd bit set in some cases, so retry once if no | |
1320 | * wait was needed */ | |
1321 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); | |
1322 | printk(KERN_DEBUG "%s: init command completed too quickly - " | |
1323 | "retrying\n", dev->name); | |
1324 | first = 0; | |
1325 | goto init; | |
1326 | } | |
1327 | ||
1328 | start = jiffies; | |
1329 | delay = jiffies + HFA384X_INIT_TIMEOUT; | |
1330 | while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && | |
1331 | time_before(jiffies, delay)) | |
1332 | yield(); | |
1333 | if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { | |
1334 | printk(KERN_DEBUG "%s: assuming no Primary image in " | |
1335 | "flash - card initialization not completed\n", | |
1336 | dev_info); | |
1337 | local->no_pri = 1; | |
1338 | #ifdef PRISM2_DOWNLOAD_SUPPORT | |
1339 | if (local->sram_type == -1) | |
1340 | local->sram_type = prism2_get_ram_size(local); | |
1341 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ | |
1342 | return 1; | |
1343 | } | |
1344 | local->no_pri = 0; | |
1345 | printk(KERN_DEBUG "prism2_hw_init: initialized in %lu ms\n", | |
1346 | (jiffies - start) * 1000 / HZ); | |
1347 | HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); | |
1348 | return 0; | |
1349 | } | |
1350 | ||
1351 | ||
1352 | static int prism2_hw_init2(struct net_device *dev, int initial) | |
1353 | { | |
1354 | struct hostap_interface *iface; | |
1355 | local_info_t *local; | |
1356 | int i; | |
1357 | ||
1358 | iface = netdev_priv(dev); | |
1359 | local = iface->local; | |
1360 | ||
1361 | #ifdef PRISM2_DOWNLOAD_SUPPORT | |
1362 | kfree(local->pda); | |
1363 | if (local->no_pri) | |
1364 | local->pda = NULL; | |
1365 | else | |
1366 | local->pda = prism2_read_pda(dev); | |
1367 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ | |
1368 | ||
1369 | hfa384x_disable_interrupts(dev); | |
1370 | ||
1371 | #ifndef final_version | |
1372 | HFA384X_OUTW(HFA384X_MAGIC, HFA384X_SWSUPPORT0_OFF); | |
1373 | if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { | |
1374 | printk("SWSUPPORT0 write/read failed: %04X != %04X\n", | |
1375 | HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC); | |
1376 | goto failed; | |
1377 | } | |
1378 | #endif | |
1379 | ||
1380 | if (initial || local->pri_only) { | |
1381 | hfa384x_events_only_cmd(dev); | |
1382 | /* get card version information */ | |
1383 | if (prism2_get_version_info(dev, HFA384X_RID_NICID, "NIC") || | |
1384 | prism2_get_version_info(dev, HFA384X_RID_PRIID, "PRI")) { | |
1385 | hfa384x_disable_interrupts(dev); | |
1386 | goto failed; | |
1387 | } | |
1388 | ||
1389 | if (prism2_get_version_info(dev, HFA384X_RID_STAID, "STA")) { | |
1390 | printk(KERN_DEBUG "%s: Failed to read STA f/w version " | |
1391 | "- only Primary f/w present\n", dev->name); | |
1392 | local->pri_only = 1; | |
1393 | return 0; | |
1394 | } | |
1395 | local->pri_only = 0; | |
1396 | hfa384x_disable_interrupts(dev); | |
1397 | } | |
1398 | ||
1399 | /* FIX: could convert allocate_fid to use sleeping CmdCompl wait and | |
1400 | * enable interrupts before this. This would also require some sort of | |
1401 | * sleeping AllocEv waiting */ | |
1402 | ||
1403 | /* allocate TX FIDs */ | |
1404 | local->txfid_len = PRISM2_TXFID_LEN; | |
1405 | for (i = 0; i < PRISM2_TXFID_COUNT; i++) { | |
1406 | local->txfid[i] = hfa384x_allocate_fid(dev, local->txfid_len); | |
1407 | if (local->txfid[i] == 0xffff && local->txfid_len > 1600) { | |
1408 | local->txfid[i] = hfa384x_allocate_fid(dev, 1600); | |
1409 | if (local->txfid[i] != 0xffff) { | |
1410 | printk(KERN_DEBUG "%s: Using shorter TX FID " | |
1411 | "(1600 bytes)\n", dev->name); | |
1412 | local->txfid_len = 1600; | |
1413 | } | |
1414 | } | |
1415 | if (local->txfid[i] == 0xffff) | |
1416 | goto failed; | |
1417 | local->intransmitfid[i] = PRISM2_TXFID_EMPTY; | |
1418 | } | |
1419 | ||
1420 | hfa384x_events_only_cmd(dev); | |
1421 | ||
1422 | if (initial) { | |
1423 | struct list_head *ptr; | |
1424 | prism2_check_sta_fw_version(local); | |
1425 | ||
1426 | if (hfa384x_get_rid(dev, HFA384X_RID_CNFOWNMACADDR, | |
3a6d54c5 | 1427 | dev->dev_addr, 6, 1) < 0) { |
ff1d2767 JM |
1428 | printk("%s: could not get own MAC address\n", |
1429 | dev->name); | |
1430 | } | |
1431 | list_for_each(ptr, &local->hostap_interfaces) { | |
1432 | iface = list_entry(ptr, struct hostap_interface, list); | |
db181347 | 1433 | eth_hw_addr_inherit(iface->dev, dev); |
ff1d2767 JM |
1434 | } |
1435 | } else if (local->fw_ap) | |
1436 | prism2_check_sta_fw_version(local); | |
1437 | ||
1438 | prism2_setup_rids(dev); | |
1439 | ||
1440 | /* MAC is now configured, but port 0 is not yet enabled */ | |
1441 | return 0; | |
1442 | ||
1443 | failed: | |
1444 | if (!local->no_pri) | |
1445 | printk(KERN_WARNING "%s: Initialization failed\n", dev_info); | |
1446 | return 1; | |
1447 | } | |
1448 | ||
1449 | ||
1450 | static int prism2_hw_enable(struct net_device *dev, int initial) | |
1451 | { | |
1452 | struct hostap_interface *iface; | |
1453 | local_info_t *local; | |
1454 | int was_resetting; | |
1455 | ||
1456 | iface = netdev_priv(dev); | |
1457 | local = iface->local; | |
1458 | was_resetting = local->hw_resetting; | |
1459 | ||
1460 | if (hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, NULL, NULL)) { | |
1461 | printk("%s: MAC port 0 enabling failed\n", dev->name); | |
1462 | return 1; | |
1463 | } | |
1464 | ||
1465 | local->hw_ready = 1; | |
1466 | local->hw_reset_tries = 0; | |
1467 | local->hw_resetting = 0; | |
1468 | hfa384x_enable_interrupts(dev); | |
1469 | ||
1470 | /* at least D-Link DWL-650 seems to require additional port reset | |
1471 | * before it starts acting as an AP, so reset port automatically | |
1472 | * here just in case */ | |
1473 | if (initial && prism2_reset_port(dev)) { | |
7d65fd76 | 1474 | printk("%s: MAC port 0 resetting failed\n", dev->name); |
ff1d2767 JM |
1475 | return 1; |
1476 | } | |
1477 | ||
1478 | if (was_resetting && netif_queue_stopped(dev)) { | |
1479 | /* If hw_reset() was called during pending transmit, netif | |
1480 | * queue was stopped. Wake it up now since the wlan card has | |
1481 | * been resetted. */ | |
1482 | netif_wake_queue(dev); | |
1483 | } | |
1484 | ||
1485 | return 0; | |
1486 | } | |
1487 | ||
1488 | ||
1489 | static int prism2_hw_config(struct net_device *dev, int initial) | |
1490 | { | |
1491 | struct hostap_interface *iface; | |
1492 | local_info_t *local; | |
1493 | ||
1494 | iface = netdev_priv(dev); | |
1495 | local = iface->local; | |
1496 | ||
1497 | if (local->hw_downloading) | |
1498 | return 1; | |
1499 | ||
1500 | if (prism2_hw_init(dev, initial)) { | |
1501 | return local->no_pri ? 0 : 1; | |
1502 | } | |
1503 | ||
1504 | if (prism2_hw_init2(dev, initial)) | |
1505 | return 1; | |
1506 | ||
1507 | /* Enable firmware if secondary image is loaded and at least one of the | |
1508 | * netdevices is up. */ | |
1509 | if (!local->pri_only && | |
1510 | (initial == 0 || (initial == 2 && local->num_dev_open > 0))) { | |
1511 | if (!local->dev_enabled) | |
1512 | prism2_callback(local, PRISM2_CALLBACK_ENABLE); | |
1513 | local->dev_enabled = 1; | |
1514 | return prism2_hw_enable(dev, initial); | |
1515 | } | |
1516 | ||
1517 | return 0; | |
1518 | } | |
1519 | ||
1520 | ||
1521 | static void prism2_hw_shutdown(struct net_device *dev, int no_disable) | |
1522 | { | |
1523 | struct hostap_interface *iface; | |
1524 | local_info_t *local; | |
1525 | ||
1526 | iface = netdev_priv(dev); | |
1527 | local = iface->local; | |
1528 | ||
1529 | /* Allow only command completion events during disable */ | |
1530 | hfa384x_events_only_cmd(dev); | |
1531 | ||
1532 | local->hw_ready = 0; | |
1533 | if (local->dev_enabled) | |
1534 | prism2_callback(local, PRISM2_CALLBACK_DISABLE); | |
1535 | local->dev_enabled = 0; | |
1536 | ||
1537 | if (local->func->card_present && !local->func->card_present(local)) { | |
1538 | printk(KERN_DEBUG "%s: card already removed or not configured " | |
1539 | "during shutdown\n", dev->name); | |
1540 | return; | |
1541 | } | |
1542 | ||
1543 | if ((no_disable & HOSTAP_HW_NO_DISABLE) == 0 && | |
1544 | hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, NULL, NULL)) | |
1545 | printk(KERN_WARNING "%s: Shutdown failed\n", dev_info); | |
1546 | ||
1547 | hfa384x_disable_interrupts(dev); | |
1548 | ||
1549 | if (no_disable & HOSTAP_HW_ENABLE_CMDCOMPL) | |
1550 | hfa384x_events_only_cmd(dev); | |
1551 | else | |
1552 | prism2_clear_cmd_queue(local); | |
1553 | } | |
1554 | ||
1555 | ||
1556 | static void prism2_hw_reset(struct net_device *dev) | |
1557 | { | |
1558 | struct hostap_interface *iface; | |
1559 | local_info_t *local; | |
1560 | ||
1561 | #if 0 | |
1562 | static long last_reset = 0; | |
1563 | ||
1564 | /* do not reset card more than once per second to avoid ending up in a | |
7d65fd76 | 1565 | * busy loop resetting the card */ |
ff1d2767 JM |
1566 | if (time_before_eq(jiffies, last_reset + HZ)) |
1567 | return; | |
1568 | last_reset = jiffies; | |
1569 | #endif | |
1570 | ||
1571 | iface = netdev_priv(dev); | |
1572 | local = iface->local; | |
1573 | ||
1574 | if (in_interrupt()) { | |
1575 | printk(KERN_DEBUG "%s: driver bug - prism2_hw_reset() called " | |
1576 | "in interrupt context\n", dev->name); | |
1577 | return; | |
1578 | } | |
1579 | ||
1580 | if (local->hw_downloading) | |
1581 | return; | |
1582 | ||
1583 | if (local->hw_resetting) { | |
1584 | printk(KERN_WARNING "%s: %s: already resetting card - " | |
1585 | "ignoring reset request\n", dev_info, dev->name); | |
1586 | return; | |
1587 | } | |
1588 | ||
1589 | local->hw_reset_tries++; | |
1590 | if (local->hw_reset_tries > 10) { | |
1591 | printk(KERN_WARNING "%s: too many reset tries, skipping\n", | |
1592 | dev->name); | |
1593 | return; | |
1594 | } | |
1595 | ||
1596 | printk(KERN_WARNING "%s: %s: resetting card\n", dev_info, dev->name); | |
1597 | hfa384x_disable_interrupts(dev); | |
1598 | local->hw_resetting = 1; | |
1599 | if (local->func->cor_sreset) { | |
1600 | /* Host system seems to hang in some cases with high traffic | |
1601 | * load or shared interrupts during COR sreset. Disable shared | |
1602 | * interrupts during reset to avoid these crashes. COS sreset | |
1603 | * takes quite a long time, so it is unfortunate that this | |
1604 | * seems to be needed. Anyway, I do not know of any better way | |
1605 | * of avoiding the crash. */ | |
1606 | disable_irq(dev->irq); | |
1607 | local->func->cor_sreset(local); | |
1608 | enable_irq(dev->irq); | |
1609 | } | |
1610 | prism2_hw_shutdown(dev, 1); | |
1611 | prism2_hw_config(dev, 0); | |
1612 | local->hw_resetting = 0; | |
1613 | ||
1614 | #ifdef PRISM2_DOWNLOAD_SUPPORT | |
1615 | if (local->dl_pri) { | |
1616 | printk(KERN_DEBUG "%s: persistent download of primary " | |
1617 | "firmware\n", dev->name); | |
1618 | if (prism2_download_genesis(local, local->dl_pri) < 0) | |
1619 | printk(KERN_WARNING "%s: download (PRI) failed\n", | |
1620 | dev->name); | |
1621 | } | |
1622 | ||
1623 | if (local->dl_sec) { | |
1624 | printk(KERN_DEBUG "%s: persistent download of secondary " | |
1625 | "firmware\n", dev->name); | |
1626 | if (prism2_download_volatile(local, local->dl_sec) < 0) | |
1627 | printk(KERN_WARNING "%s: download (SEC) failed\n", | |
1628 | dev->name); | |
1629 | } | |
1630 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ | |
1631 | ||
1632 | /* TODO: restore beacon TIM bits for STAs that have buffered frames */ | |
1633 | } | |
1634 | ||
1635 | ||
1636 | static void prism2_schedule_reset(local_info_t *local) | |
1637 | { | |
1638 | schedule_work(&local->reset_queue); | |
1639 | } | |
1640 | ||
1641 | ||
1642 | /* Called only as scheduled task after noticing card timeout in interrupt | |
1643 | * context */ | |
c4028958 | 1644 | static void handle_reset_queue(struct work_struct *work) |
ff1d2767 | 1645 | { |
c4028958 | 1646 | local_info_t *local = container_of(work, local_info_t, reset_queue); |
ff1d2767 JM |
1647 | |
1648 | printk(KERN_DEBUG "%s: scheduled card reset\n", local->dev->name); | |
1649 | prism2_hw_reset(local->dev); | |
1650 | ||
1651 | if (netif_queue_stopped(local->dev)) { | |
1652 | int i; | |
1653 | ||
1654 | for (i = 0; i < PRISM2_TXFID_COUNT; i++) | |
1655 | if (local->intransmitfid[i] == PRISM2_TXFID_EMPTY) { | |
1656 | PDEBUG(DEBUG_EXTRA, "prism2_tx_timeout: " | |
1657 | "wake up queue\n"); | |
1658 | netif_wake_queue(local->dev); | |
1659 | break; | |
1660 | } | |
1661 | } | |
1662 | } | |
1663 | ||
1664 | ||
1665 | static int prism2_get_txfid_idx(local_info_t *local) | |
1666 | { | |
1667 | int idx, end; | |
1668 | unsigned long flags; | |
1669 | ||
1670 | spin_lock_irqsave(&local->txfidlock, flags); | |
1671 | end = idx = local->next_txfid; | |
1672 | do { | |
1673 | if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { | |
1674 | local->intransmitfid[idx] = PRISM2_TXFID_RESERVED; | |
1675 | spin_unlock_irqrestore(&local->txfidlock, flags); | |
1676 | return idx; | |
1677 | } | |
1678 | idx++; | |
1679 | if (idx >= PRISM2_TXFID_COUNT) | |
1680 | idx = 0; | |
1681 | } while (idx != end); | |
1682 | spin_unlock_irqrestore(&local->txfidlock, flags); | |
1683 | ||
1684 | PDEBUG(DEBUG_EXTRA2, "prism2_get_txfid_idx: no room in txfid buf: " | |
1685 | "packet dropped\n"); | |
4cfa8e45 | 1686 | local->dev->stats.tx_dropped++; |
ff1d2767 JM |
1687 | |
1688 | return -1; | |
1689 | } | |
1690 | ||
1691 | ||
1692 | /* Called only from hardware IRQ */ | |
b15eff26 | 1693 | static void prism2_transmit_cb(struct net_device *dev, long context, |
ff1d2767 JM |
1694 | u16 resp0, u16 res) |
1695 | { | |
1696 | struct hostap_interface *iface; | |
1697 | local_info_t *local; | |
1698 | int idx = (int) context; | |
1699 | ||
1700 | iface = netdev_priv(dev); | |
1701 | local = iface->local; | |
1702 | ||
1703 | if (res) { | |
1704 | printk(KERN_DEBUG "%s: prism2_transmit_cb - res=0x%02x\n", | |
1705 | dev->name, res); | |
1706 | return; | |
1707 | } | |
1708 | ||
1709 | if (idx < 0 || idx >= PRISM2_TXFID_COUNT) { | |
1710 | printk(KERN_DEBUG "%s: prism2_transmit_cb called with invalid " | |
1711 | "idx=%d\n", dev->name, idx); | |
1712 | return; | |
1713 | } | |
1714 | ||
1715 | if (!test_and_clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { | |
1716 | printk(KERN_DEBUG "%s: driver bug: prism2_transmit_cb called " | |
1717 | "with no pending transmit\n", dev->name); | |
1718 | } | |
1719 | ||
1720 | if (netif_queue_stopped(dev)) { | |
1721 | /* ready for next TX, so wake up queue that was stopped in | |
1722 | * prism2_transmit() */ | |
1723 | netif_wake_queue(dev); | |
1724 | } | |
1725 | ||
1726 | spin_lock(&local->txfidlock); | |
1727 | ||
1728 | /* With reclaim, Resp0 contains new txfid for transmit; the old txfid | |
1729 | * will be automatically allocated for the next TX frame */ | |
1730 | local->intransmitfid[idx] = resp0; | |
1731 | ||
1732 | PDEBUG(DEBUG_FID, "%s: prism2_transmit_cb: txfid[%d]=0x%04x, " | |
1733 | "resp0=0x%04x, transmit_txfid=0x%04x\n", | |
1734 | dev->name, idx, local->txfid[idx], | |
1735 | resp0, local->intransmitfid[local->next_txfid]); | |
1736 | ||
1737 | idx++; | |
1738 | if (idx >= PRISM2_TXFID_COUNT) | |
1739 | idx = 0; | |
1740 | local->next_txfid = idx; | |
1741 | ||
1742 | /* check if all TX buffers are occupied */ | |
1743 | do { | |
1744 | if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { | |
1745 | spin_unlock(&local->txfidlock); | |
1746 | return; | |
1747 | } | |
1748 | idx++; | |
1749 | if (idx >= PRISM2_TXFID_COUNT) | |
1750 | idx = 0; | |
1751 | } while (idx != local->next_txfid); | |
1752 | spin_unlock(&local->txfidlock); | |
1753 | ||
1754 | /* no empty TX buffers, stop queue */ | |
1755 | netif_stop_queue(dev); | |
1756 | } | |
1757 | ||
1758 | ||
1759 | /* Called only from software IRQ if PCI bus master is not used (with bus master | |
1760 | * this can be called both from software and hardware IRQ) */ | |
1761 | static int prism2_transmit(struct net_device *dev, int idx) | |
1762 | { | |
1763 | struct hostap_interface *iface; | |
1764 | local_info_t *local; | |
1765 | int res; | |
1766 | ||
1767 | iface = netdev_priv(dev); | |
1768 | local = iface->local; | |
1769 | ||
1770 | /* The driver tries to stop netif queue so that there would not be | |
1771 | * more than one attempt to transmit frames going on; check that this | |
1772 | * is really the case */ | |
1773 | ||
1774 | if (test_and_set_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { | |
1775 | printk(KERN_DEBUG "%s: driver bug - prism2_transmit() called " | |
1776 | "when previous TX was pending\n", dev->name); | |
1777 | return -1; | |
1778 | } | |
1779 | ||
1780 | /* stop the queue for the time that transmit is pending */ | |
1781 | netif_stop_queue(dev); | |
1782 | ||
1783 | /* transmit packet */ | |
1784 | res = hfa384x_cmd_callback( | |
1785 | dev, | |
1786 | HFA384X_CMDCODE_TRANSMIT | HFA384X_CMD_TX_RECLAIM, | |
1787 | local->txfid[idx], | |
b15eff26 | 1788 | prism2_transmit_cb, (long) idx); |
ff1d2767 JM |
1789 | |
1790 | if (res) { | |
ff1d2767 JM |
1791 | printk(KERN_DEBUG "%s: prism2_transmit: CMDCODE_TRANSMIT " |
1792 | "failed (res=%d)\n", dev->name, res); | |
4cfa8e45 | 1793 | dev->stats.tx_dropped++; |
ff1d2767 JM |
1794 | netif_wake_queue(dev); |
1795 | return -1; | |
1796 | } | |
860e9538 | 1797 | netif_trans_update(dev); |
ff1d2767 JM |
1798 | |
1799 | /* Since we did not wait for command completion, the card continues | |
1800 | * to process on the background and we will finish handling when | |
1801 | * command completion event is handled (prism2_cmd_ev() function) */ | |
1802 | ||
1803 | return 0; | |
1804 | } | |
1805 | ||
1806 | ||
ff1d2767 JM |
1807 | /* Send IEEE 802.11 frame (convert the header into Prism2 TX descriptor and |
1808 | * send the payload with this descriptor) */ | |
1809 | /* Called only from software IRQ */ | |
1810 | static int prism2_tx_80211(struct sk_buff *skb, struct net_device *dev) | |
1811 | { | |
1812 | struct hostap_interface *iface; | |
1813 | local_info_t *local; | |
1814 | struct hfa384x_tx_frame txdesc; | |
ff1d2767 JM |
1815 | struct hostap_skb_tx_data *meta; |
1816 | int hdr_len, data_len, idx, res, ret = -1; | |
1817 | u16 tx_control, fc; | |
1818 | ||
1819 | iface = netdev_priv(dev); | |
1820 | local = iface->local; | |
1821 | ||
1822 | meta = (struct hostap_skb_tx_data *) skb->cb; | |
ff1d2767 JM |
1823 | |
1824 | prism2_callback(local, PRISM2_CALLBACK_TX_START); | |
1825 | ||
1826 | if ((local->func->card_present && !local->func->card_present(local)) || | |
1827 | !local->hw_ready || local->hw_downloading || local->pri_only) { | |
1828 | if (net_ratelimit()) { | |
1829 | printk(KERN_DEBUG "%s: prism2_tx_80211: hw not ready -" | |
1830 | " skipping\n", dev->name); | |
1831 | } | |
1832 | goto fail; | |
1833 | } | |
1834 | ||
1835 | memset(&txdesc, 0, sizeof(txdesc)); | |
1836 | ||
1837 | /* skb->data starts with txdesc->frame_control */ | |
1838 | hdr_len = 24; | |
d626f62b | 1839 | skb_copy_from_linear_data(skb, &txdesc.frame_control, hdr_len); |
ff1d2767 | 1840 | fc = le16_to_cpu(txdesc.frame_control); |
1ea893fd DW |
1841 | if (ieee80211_is_data(txdesc.frame_control) && |
1842 | ieee80211_has_a4(txdesc.frame_control) && | |
b2f4a2e3 | 1843 | skb->len >= 30) { |
ff1d2767 | 1844 | /* Addr4 */ |
d626f62b ACM |
1845 | skb_copy_from_linear_data_offset(skb, hdr_len, txdesc.addr4, |
1846 | ETH_ALEN); | |
ff1d2767 JM |
1847 | hdr_len += ETH_ALEN; |
1848 | } | |
1849 | ||
1850 | tx_control = local->tx_control; | |
1851 | if (meta->tx_cb_idx) { | |
1852 | tx_control |= HFA384X_TX_CTRL_TX_OK; | |
e0c0056c | 1853 | txdesc.sw_support = cpu_to_le32(meta->tx_cb_idx); |
ff1d2767 JM |
1854 | } |
1855 | txdesc.tx_control = cpu_to_le16(tx_control); | |
1856 | txdesc.tx_rate = meta->rate; | |
1857 | ||
1858 | data_len = skb->len - hdr_len; | |
1859 | txdesc.data_len = cpu_to_le16(data_len); | |
1860 | txdesc.len = cpu_to_be16(data_len); | |
1861 | ||
1862 | idx = prism2_get_txfid_idx(local); | |
1863 | if (idx < 0) | |
1864 | goto fail; | |
1865 | ||
1866 | if (local->frame_dump & PRISM2_DUMP_TX_HDR) | |
1867 | hostap_dump_tx_header(dev->name, &txdesc); | |
1868 | ||
1869 | spin_lock(&local->baplock); | |
1870 | res = hfa384x_setup_bap(dev, BAP0, local->txfid[idx], 0); | |
1871 | ||
ff1d2767 JM |
1872 | if (!res) |
1873 | res = hfa384x_to_bap(dev, BAP0, &txdesc, sizeof(txdesc)); | |
1874 | if (!res) | |
1875 | res = hfa384x_to_bap(dev, BAP0, skb->data + hdr_len, | |
1876 | skb->len - hdr_len); | |
1877 | spin_unlock(&local->baplock); | |
1878 | ||
1879 | if (!res) | |
1880 | res = prism2_transmit(dev, idx); | |
1881 | if (res) { | |
1882 | printk(KERN_DEBUG "%s: prism2_tx_80211 - to BAP0 failed\n", | |
1883 | dev->name); | |
1884 | local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; | |
1885 | schedule_work(&local->reset_queue); | |
1886 | goto fail; | |
1887 | } | |
1888 | ||
1889 | ret = 0; | |
1890 | ||
1891 | fail: | |
1892 | prism2_callback(local, PRISM2_CALLBACK_TX_END); | |
1893 | return ret; | |
1894 | } | |
1895 | ||
1896 | ||
1897 | /* Some SMP systems have reported number of odd errors with hostap_pci. fid | |
1898 | * register has changed values between consecutive reads for an unknown reason. | |
1899 | * This should really not happen, so more debugging is needed. This test | |
17964e9d | 1900 | * version is a bit slower, but it will detect most of such register changes |
ff1d2767 JM |
1901 | * and will try to get the correct fid eventually. */ |
1902 | #define EXTRA_FID_READ_TESTS | |
1903 | ||
858119e1 | 1904 | static u16 prism2_read_fid_reg(struct net_device *dev, u16 reg) |
ff1d2767 JM |
1905 | { |
1906 | #ifdef EXTRA_FID_READ_TESTS | |
1907 | u16 val, val2, val3; | |
1908 | int i; | |
1909 | ||
1910 | for (i = 0; i < 10; i++) { | |
1911 | val = HFA384X_INW(reg); | |
1912 | val2 = HFA384X_INW(reg); | |
1913 | val3 = HFA384X_INW(reg); | |
1914 | ||
1915 | if (val == val2 && val == val3) | |
1916 | return val; | |
1917 | ||
1918 | printk(KERN_DEBUG "%s: detected fid change (try=%d, reg=%04x):" | |
1919 | " %04x %04x %04x\n", | |
1920 | dev->name, i, reg, val, val2, val3); | |
1921 | if ((val == val2 || val == val3) && val != 0) | |
1922 | return val; | |
1923 | if (val2 == val3 && val2 != 0) | |
1924 | return val2; | |
1925 | } | |
1926 | printk(KERN_WARNING "%s: Uhhuh.. could not read good fid from reg " | |
1927 | "%04x (%04x %04x %04x)\n", dev->name, reg, val, val2, val3); | |
1928 | return val; | |
1929 | #else /* EXTRA_FID_READ_TESTS */ | |
1930 | return HFA384X_INW(reg); | |
1931 | #endif /* EXTRA_FID_READ_TESTS */ | |
1932 | } | |
1933 | ||
1934 | ||
1935 | /* Called only as a tasklet (software IRQ) */ | |
1936 | static void prism2_rx(local_info_t *local) | |
1937 | { | |
1938 | struct net_device *dev = local->dev; | |
1939 | int res, rx_pending = 0; | |
1940 | u16 len, hdr_len, rxfid, status, macport; | |
ff1d2767 JM |
1941 | struct hfa384x_rx_frame rxdesc; |
1942 | struct sk_buff *skb = NULL; | |
1943 | ||
1944 | prism2_callback(local, PRISM2_CALLBACK_RX_START); | |
ff1d2767 JM |
1945 | |
1946 | rxfid = prism2_read_fid_reg(dev, HFA384X_RXFID_OFF); | |
1947 | #ifndef final_version | |
1948 | if (rxfid == 0) { | |
1949 | rxfid = HFA384X_INW(HFA384X_RXFID_OFF); | |
1950 | printk(KERN_DEBUG "prism2_rx: rxfid=0 (next 0x%04x)\n", | |
1951 | rxfid); | |
1952 | if (rxfid == 0) { | |
1953 | schedule_work(&local->reset_queue); | |
1954 | goto rx_dropped; | |
1955 | } | |
1956 | /* try to continue with the new rxfid value */ | |
1957 | } | |
1958 | #endif | |
1959 | ||
1960 | spin_lock(&local->baplock); | |
1961 | res = hfa384x_setup_bap(dev, BAP0, rxfid, 0); | |
1962 | if (!res) | |
1963 | res = hfa384x_from_bap(dev, BAP0, &rxdesc, sizeof(rxdesc)); | |
1964 | ||
1965 | if (res) { | |
1966 | spin_unlock(&local->baplock); | |
1967 | printk(KERN_DEBUG "%s: copy from BAP0 failed %d\n", dev->name, | |
1968 | res); | |
1969 | if (res == -ETIMEDOUT) { | |
1970 | schedule_work(&local->reset_queue); | |
1971 | } | |
1972 | goto rx_dropped; | |
1973 | } | |
1974 | ||
1975 | len = le16_to_cpu(rxdesc.data_len); | |
1976 | hdr_len = sizeof(rxdesc); | |
1977 | status = le16_to_cpu(rxdesc.status); | |
1978 | macport = (status >> 8) & 0x07; | |
1979 | ||
1980 | /* Drop frames with too large reported payload length. Monitor mode | |
1981 | * seems to sometimes pass frames (e.g., ctrl::ack) with signed and | |
1982 | * negative value, so allow also values 65522 .. 65534 (-14 .. -2) for | |
1983 | * macport 7 */ | |
1984 | if (len > PRISM2_DATA_MAXLEN + 8 /* WEP */) { | |
1985 | if (macport == 7 && local->iw_mode == IW_MODE_MONITOR) { | |
1986 | if (len >= (u16) -14) { | |
1987 | hdr_len -= 65535 - len; | |
1988 | hdr_len--; | |
1989 | } | |
1990 | len = 0; | |
1991 | } else { | |
1992 | spin_unlock(&local->baplock); | |
1993 | printk(KERN_DEBUG "%s: Received frame with invalid " | |
1994 | "length 0x%04x\n", dev->name, len); | |
1995 | hostap_dump_rx_header(dev->name, &rxdesc); | |
1996 | goto rx_dropped; | |
1997 | } | |
1998 | } | |
1999 | ||
2000 | skb = dev_alloc_skb(len + hdr_len); | |
2001 | if (!skb) { | |
2002 | spin_unlock(&local->baplock); | |
2003 | printk(KERN_DEBUG "%s: RX failed to allocate skb\n", | |
2004 | dev->name); | |
2005 | goto rx_dropped; | |
2006 | } | |
2007 | skb->dev = dev; | |
2008 | memcpy(skb_put(skb, hdr_len), &rxdesc, hdr_len); | |
2009 | ||
ea3f1865 JM |
2010 | if (len > 0) |
2011 | res = hfa384x_from_bap(dev, BAP0, skb_put(skb, len), len); | |
2012 | spin_unlock(&local->baplock); | |
2013 | if (res) { | |
2014 | printk(KERN_DEBUG "%s: RX failed to read " | |
2015 | "frame data\n", dev->name); | |
2016 | goto rx_dropped; | |
ff1d2767 JM |
2017 | } |
2018 | ||
ea3f1865 JM |
2019 | skb_queue_tail(&local->rx_list, skb); |
2020 | tasklet_schedule(&local->rx_tasklet); | |
2021 | ||
ff1d2767 JM |
2022 | rx_exit: |
2023 | prism2_callback(local, PRISM2_CALLBACK_RX_END); | |
2024 | if (!rx_pending) { | |
2025 | HFA384X_OUTW(HFA384X_EV_RX, HFA384X_EVACK_OFF); | |
2026 | } | |
2027 | ||
2028 | return; | |
2029 | ||
2030 | rx_dropped: | |
4cfa8e45 | 2031 | dev->stats.rx_dropped++; |
ff1d2767 JM |
2032 | if (skb) |
2033 | dev_kfree_skb(skb); | |
2034 | goto rx_exit; | |
2035 | } | |
2036 | ||
2037 | ||
2038 | /* Called only as a tasklet (software IRQ) */ | |
2039 | static void hostap_rx_skb(local_info_t *local, struct sk_buff *skb) | |
2040 | { | |
2041 | struct hfa384x_rx_frame *rxdesc; | |
2042 | struct net_device *dev = skb->dev; | |
2043 | struct hostap_80211_rx_status stats; | |
2044 | int hdrlen, rx_hdrlen; | |
2045 | ||
2046 | rx_hdrlen = sizeof(*rxdesc); | |
2047 | if (skb->len < sizeof(*rxdesc)) { | |
2048 | /* Allow monitor mode to receive shorter frames */ | |
2049 | if (local->iw_mode == IW_MODE_MONITOR && | |
2050 | skb->len >= sizeof(*rxdesc) - 30) { | |
2051 | rx_hdrlen = skb->len; | |
2052 | } else { | |
2053 | dev_kfree_skb(skb); | |
2054 | return; | |
2055 | } | |
2056 | } | |
2057 | ||
2058 | rxdesc = (struct hfa384x_rx_frame *) skb->data; | |
2059 | ||
2060 | if (local->frame_dump & PRISM2_DUMP_RX_HDR && | |
2061 | skb->len >= sizeof(*rxdesc)) | |
2062 | hostap_dump_rx_header(dev->name, rxdesc); | |
2063 | ||
2064 | if (le16_to_cpu(rxdesc->status) & HFA384X_RX_STATUS_FCSERR && | |
2065 | (!local->monitor_allow_fcserr || | |
2066 | local->iw_mode != IW_MODE_MONITOR)) | |
2067 | goto drop; | |
2068 | ||
2069 | if (skb->len > PRISM2_DATA_MAXLEN) { | |
2070 | printk(KERN_DEBUG "%s: RX: len(%d) > MAX(%d)\n", | |
2071 | dev->name, skb->len, PRISM2_DATA_MAXLEN); | |
2072 | goto drop; | |
2073 | } | |
2074 | ||
2075 | stats.mac_time = le32_to_cpu(rxdesc->time); | |
2076 | stats.signal = rxdesc->signal - local->rssi_to_dBm; | |
2077 | stats.noise = rxdesc->silence - local->rssi_to_dBm; | |
2078 | stats.rate = rxdesc->rate; | |
2079 | ||
2080 | /* Convert Prism2 RX structure into IEEE 802.11 header */ | |
1ea893fd | 2081 | hdrlen = hostap_80211_get_hdrlen(rxdesc->frame_control); |
ff1d2767 JM |
2082 | if (hdrlen > rx_hdrlen) |
2083 | hdrlen = rx_hdrlen; | |
2084 | ||
2085 | memmove(skb_pull(skb, rx_hdrlen - hdrlen), | |
2086 | &rxdesc->frame_control, hdrlen); | |
2087 | ||
2088 | hostap_80211_rx(dev, skb, &stats); | |
2089 | return; | |
2090 | ||
2091 | drop: | |
2092 | dev_kfree_skb(skb); | |
2093 | } | |
2094 | ||
2095 | ||
2096 | /* Called only as a tasklet (software IRQ) */ | |
2097 | static void hostap_rx_tasklet(unsigned long data) | |
2098 | { | |
2099 | local_info_t *local = (local_info_t *) data; | |
2100 | struct sk_buff *skb; | |
2101 | ||
2102 | while ((skb = skb_dequeue(&local->rx_list)) != NULL) | |
2103 | hostap_rx_skb(local, skb); | |
2104 | } | |
2105 | ||
2106 | ||
2107 | /* Called only from hardware IRQ */ | |
2108 | static void prism2_alloc_ev(struct net_device *dev) | |
2109 | { | |
2110 | struct hostap_interface *iface; | |
2111 | local_info_t *local; | |
2112 | int idx; | |
2113 | u16 fid; | |
2114 | ||
2115 | iface = netdev_priv(dev); | |
2116 | local = iface->local; | |
2117 | ||
2118 | fid = prism2_read_fid_reg(dev, HFA384X_ALLOCFID_OFF); | |
2119 | ||
2120 | PDEBUG(DEBUG_FID, "FID: interrupt: ALLOC - fid=0x%04x\n", fid); | |
2121 | ||
2122 | spin_lock(&local->txfidlock); | |
2123 | idx = local->next_alloc; | |
2124 | ||
2125 | do { | |
2126 | if (local->txfid[idx] == fid) { | |
2127 | PDEBUG(DEBUG_FID, "FID: found matching txfid[%d]\n", | |
2128 | idx); | |
2129 | ||
2130 | #ifndef final_version | |
2131 | if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) | |
2132 | printk("Already released txfid found at idx " | |
2133 | "%d\n", idx); | |
2134 | if (local->intransmitfid[idx] == PRISM2_TXFID_RESERVED) | |
2135 | printk("Already reserved txfid found at idx " | |
2136 | "%d\n", idx); | |
2137 | #endif | |
2138 | local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; | |
2139 | idx++; | |
2140 | local->next_alloc = idx >= PRISM2_TXFID_COUNT ? 0 : | |
2141 | idx; | |
2142 | ||
2143 | if (!test_bit(HOSTAP_BITS_TRANSMIT, &local->bits) && | |
2144 | netif_queue_stopped(dev)) | |
2145 | netif_wake_queue(dev); | |
2146 | ||
2147 | spin_unlock(&local->txfidlock); | |
2148 | return; | |
2149 | } | |
2150 | ||
2151 | idx++; | |
2152 | if (idx >= PRISM2_TXFID_COUNT) | |
2153 | idx = 0; | |
2154 | } while (idx != local->next_alloc); | |
2155 | ||
2156 | printk(KERN_WARNING "%s: could not find matching txfid (0x%04x, new " | |
2157 | "read 0x%04x) for alloc event\n", dev->name, fid, | |
2158 | HFA384X_INW(HFA384X_ALLOCFID_OFF)); | |
2159 | printk(KERN_DEBUG "TXFIDs:"); | |
2160 | for (idx = 0; idx < PRISM2_TXFID_COUNT; idx++) | |
2161 | printk(" %04x[%04x]", local->txfid[idx], | |
2162 | local->intransmitfid[idx]); | |
2163 | printk("\n"); | |
2164 | spin_unlock(&local->txfidlock); | |
2165 | ||
2166 | /* FIX: should probably schedule reset; reference to one txfid was lost | |
2167 | * completely.. Bad things will happen if we run out of txfids | |
2168 | * Actually, this will cause netdev watchdog to notice TX timeout and | |
2169 | * then card reset after all txfids have been leaked. */ | |
2170 | } | |
2171 | ||
2172 | ||
2173 | /* Called only as a tasklet (software IRQ) */ | |
2174 | static void hostap_tx_callback(local_info_t *local, | |
2175 | struct hfa384x_tx_frame *txdesc, int ok, | |
2176 | char *payload) | |
2177 | { | |
2178 | u16 sw_support, hdrlen, len; | |
2179 | struct sk_buff *skb; | |
2180 | struct hostap_tx_callback_info *cb; | |
2181 | ||
2182 | /* Make sure that frame was from us. */ | |
d22fbd70 | 2183 | if (!ether_addr_equal(txdesc->addr2, local->dev->dev_addr)) { |
ff1d2767 JM |
2184 | printk(KERN_DEBUG "%s: TX callback - foreign frame\n", |
2185 | local->dev->name); | |
2186 | return; | |
2187 | } | |
2188 | ||
e0c0056c | 2189 | sw_support = le32_to_cpu(txdesc->sw_support); |
ff1d2767 JM |
2190 | |
2191 | spin_lock(&local->lock); | |
2192 | cb = local->tx_callback; | |
2193 | while (cb != NULL && cb->idx != sw_support) | |
2194 | cb = cb->next; | |
2195 | spin_unlock(&local->lock); | |
2196 | ||
2197 | if (cb == NULL) { | |
2198 | printk(KERN_DEBUG "%s: could not find TX callback (idx %d)\n", | |
2199 | local->dev->name, sw_support); | |
2200 | return; | |
2201 | } | |
2202 | ||
1ea893fd | 2203 | hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control); |
ff1d2767 JM |
2204 | len = le16_to_cpu(txdesc->data_len); |
2205 | skb = dev_alloc_skb(hdrlen + len); | |
2206 | if (skb == NULL) { | |
2207 | printk(KERN_DEBUG "%s: hostap_tx_callback failed to allocate " | |
2208 | "skb\n", local->dev->name); | |
2209 | return; | |
2210 | } | |
2211 | ||
2212 | memcpy(skb_put(skb, hdrlen), (void *) &txdesc->frame_control, hdrlen); | |
2213 | if (payload) | |
2214 | memcpy(skb_put(skb, len), payload, len); | |
2215 | ||
2216 | skb->dev = local->dev; | |
459a98ed | 2217 | skb_reset_mac_header(skb); |
ff1d2767 JM |
2218 | |
2219 | cb->func(skb, ok, cb->data); | |
2220 | } | |
2221 | ||
2222 | ||
2223 | /* Called only as a tasklet (software IRQ) */ | |
2224 | static int hostap_tx_compl_read(local_info_t *local, int error, | |
2225 | struct hfa384x_tx_frame *txdesc, | |
2226 | char **payload) | |
2227 | { | |
2228 | u16 fid, len; | |
2229 | int res, ret = 0; | |
2230 | struct net_device *dev = local->dev; | |
2231 | ||
2232 | fid = prism2_read_fid_reg(dev, HFA384X_TXCOMPLFID_OFF); | |
2233 | ||
2234 | PDEBUG(DEBUG_FID, "interrupt: TX (err=%d) - fid=0x%04x\n", fid, error); | |
2235 | ||
2236 | spin_lock(&local->baplock); | |
2237 | res = hfa384x_setup_bap(dev, BAP0, fid, 0); | |
2238 | if (!res) | |
2239 | res = hfa384x_from_bap(dev, BAP0, txdesc, sizeof(*txdesc)); | |
2240 | if (res) { | |
2241 | PDEBUG(DEBUG_EXTRA, "%s: TX (err=%d) - fid=0x%04x - could not " | |
2242 | "read txdesc\n", dev->name, error, fid); | |
2243 | if (res == -ETIMEDOUT) { | |
2244 | schedule_work(&local->reset_queue); | |
2245 | } | |
2246 | ret = -1; | |
2247 | goto fail; | |
2248 | } | |
2249 | if (txdesc->sw_support) { | |
2250 | len = le16_to_cpu(txdesc->data_len); | |
2251 | if (len < PRISM2_DATA_MAXLEN) { | |
5cbded58 | 2252 | *payload = kmalloc(len, GFP_ATOMIC); |
ff1d2767 JM |
2253 | if (*payload == NULL || |
2254 | hfa384x_from_bap(dev, BAP0, *payload, len)) { | |
2255 | PDEBUG(DEBUG_EXTRA, "%s: could not read TX " | |
2256 | "frame payload\n", dev->name); | |
2257 | kfree(*payload); | |
2258 | *payload = NULL; | |
2259 | ret = -1; | |
2260 | goto fail; | |
2261 | } | |
2262 | } | |
2263 | } | |
2264 | ||
2265 | fail: | |
2266 | spin_unlock(&local->baplock); | |
2267 | ||
2268 | return ret; | |
2269 | } | |
2270 | ||
2271 | ||
2272 | /* Called only as a tasklet (software IRQ) */ | |
2273 | static void prism2_tx_ev(local_info_t *local) | |
2274 | { | |
2275 | struct net_device *dev = local->dev; | |
2276 | char *payload = NULL; | |
2277 | struct hfa384x_tx_frame txdesc; | |
2278 | ||
2279 | if (hostap_tx_compl_read(local, 0, &txdesc, &payload)) | |
2280 | goto fail; | |
2281 | ||
2282 | if (local->frame_dump & PRISM2_DUMP_TX_HDR) { | |
2283 | PDEBUG(DEBUG_EXTRA, "%s: TX - status=0x%04x " | |
2284 | "retry_count=%d tx_rate=%d seq_ctrl=%d " | |
2285 | "duration_id=%d\n", | |
2286 | dev->name, le16_to_cpu(txdesc.status), | |
2287 | txdesc.retry_count, txdesc.tx_rate, | |
2288 | le16_to_cpu(txdesc.seq_ctrl), | |
2289 | le16_to_cpu(txdesc.duration_id)); | |
2290 | } | |
2291 | ||
2292 | if (txdesc.sw_support) | |
2293 | hostap_tx_callback(local, &txdesc, 1, payload); | |
2294 | kfree(payload); | |
2295 | ||
2296 | fail: | |
2297 | HFA384X_OUTW(HFA384X_EV_TX, HFA384X_EVACK_OFF); | |
2298 | } | |
2299 | ||
2300 | ||
2301 | /* Called only as a tasklet (software IRQ) */ | |
2302 | static void hostap_sta_tx_exc_tasklet(unsigned long data) | |
2303 | { | |
2304 | local_info_t *local = (local_info_t *) data; | |
2305 | struct sk_buff *skb; | |
2306 | ||
2307 | while ((skb = skb_dequeue(&local->sta_tx_exc_list)) != NULL) { | |
2308 | struct hfa384x_tx_frame *txdesc = | |
2309 | (struct hfa384x_tx_frame *) skb->data; | |
2310 | ||
2311 | if (skb->len >= sizeof(*txdesc)) { | |
2312 | /* Convert Prism2 RX structure into IEEE 802.11 header | |
2313 | */ | |
1ea893fd | 2314 | int hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control); |
ff1d2767 JM |
2315 | memmove(skb_pull(skb, sizeof(*txdesc) - hdrlen), |
2316 | &txdesc->frame_control, hdrlen); | |
2317 | ||
2318 | hostap_handle_sta_tx_exc(local, skb); | |
2319 | } | |
2320 | dev_kfree_skb(skb); | |
2321 | } | |
2322 | } | |
2323 | ||
2324 | ||
2325 | /* Called only as a tasklet (software IRQ) */ | |
2326 | static void prism2_txexc(local_info_t *local) | |
2327 | { | |
2328 | struct net_device *dev = local->dev; | |
2329 | u16 status, fc; | |
2330 | int show_dump, res; | |
2331 | char *payload = NULL; | |
2332 | struct hfa384x_tx_frame txdesc; | |
2333 | ||
2334 | show_dump = local->frame_dump & PRISM2_DUMP_TXEXC_HDR; | |
4cfa8e45 | 2335 | dev->stats.tx_errors++; |
ff1d2767 JM |
2336 | |
2337 | res = hostap_tx_compl_read(local, 1, &txdesc, &payload); | |
2338 | HFA384X_OUTW(HFA384X_EV_TXEXC, HFA384X_EVACK_OFF); | |
2339 | if (res) | |
2340 | return; | |
2341 | ||
2342 | status = le16_to_cpu(txdesc.status); | |
2343 | ||
2344 | /* We produce a TXDROP event only for retry or lifetime | |
2345 | * exceeded, because that's the only status that really mean | |
2346 | * that this particular node went away. | |
2347 | * Other errors means that *we* screwed up. - Jean II */ | |
2348 | if (status & (HFA384X_TX_STATUS_RETRYERR | HFA384X_TX_STATUS_AGEDERR)) | |
2349 | { | |
2350 | union iwreq_data wrqu; | |
2351 | ||
2352 | /* Copy 802.11 dest address. */ | |
2353 | memcpy(wrqu.addr.sa_data, txdesc.addr1, ETH_ALEN); | |
2354 | wrqu.addr.sa_family = ARPHRD_ETHER; | |
2355 | wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL); | |
2356 | } else | |
2357 | show_dump = 1; | |
2358 | ||
2359 | if (local->iw_mode == IW_MODE_MASTER || | |
2360 | local->iw_mode == IW_MODE_REPEAT || | |
2361 | local->wds_type & HOSTAP_WDS_AP_CLIENT) { | |
2362 | struct sk_buff *skb; | |
2363 | skb = dev_alloc_skb(sizeof(txdesc)); | |
2364 | if (skb) { | |
2365 | memcpy(skb_put(skb, sizeof(txdesc)), &txdesc, | |
2366 | sizeof(txdesc)); | |
2367 | skb_queue_tail(&local->sta_tx_exc_list, skb); | |
2368 | tasklet_schedule(&local->sta_tx_exc_tasklet); | |
2369 | } | |
2370 | } | |
2371 | ||
2372 | if (txdesc.sw_support) | |
2373 | hostap_tx_callback(local, &txdesc, 0, payload); | |
2374 | kfree(payload); | |
2375 | ||
2376 | if (!show_dump) | |
2377 | return; | |
2378 | ||
2379 | PDEBUG(DEBUG_EXTRA, "%s: TXEXC - status=0x%04x (%s%s%s%s)" | |
2380 | " tx_control=%04x\n", | |
2381 | dev->name, status, | |
2382 | status & HFA384X_TX_STATUS_RETRYERR ? "[RetryErr]" : "", | |
2383 | status & HFA384X_TX_STATUS_AGEDERR ? "[AgedErr]" : "", | |
2384 | status & HFA384X_TX_STATUS_DISCON ? "[Discon]" : "", | |
2385 | status & HFA384X_TX_STATUS_FORMERR ? "[FormErr]" : "", | |
2386 | le16_to_cpu(txdesc.tx_control)); | |
2387 | ||
2388 | fc = le16_to_cpu(txdesc.frame_control); | |
2389 | PDEBUG(DEBUG_EXTRA, " retry_count=%d tx_rate=%d fc=0x%04x " | |
2390 | "(%s%s%s::%d%s%s)\n", | |
2391 | txdesc.retry_count, txdesc.tx_rate, fc, | |
1ea893fd DW |
2392 | ieee80211_is_mgmt(txdesc.frame_control) ? "Mgmt" : "", |
2393 | ieee80211_is_ctl(txdesc.frame_control) ? "Ctrl" : "", | |
2394 | ieee80211_is_data(txdesc.frame_control) ? "Data" : "", | |
2395 | (fc & IEEE80211_FCTL_STYPE) >> 4, | |
2396 | ieee80211_has_tods(txdesc.frame_control) ? " ToDS" : "", | |
2397 | ieee80211_has_fromds(txdesc.frame_control) ? " FromDS" : ""); | |
e174961c JB |
2398 | PDEBUG(DEBUG_EXTRA, " A1=%pM A2=%pM A3=%pM A4=%pM\n", |
2399 | txdesc.addr1, txdesc.addr2, | |
2400 | txdesc.addr3, txdesc.addr4); | |
ff1d2767 JM |
2401 | } |
2402 | ||
2403 | ||
2404 | /* Called only as a tasklet (software IRQ) */ | |
2405 | static void hostap_info_tasklet(unsigned long data) | |
2406 | { | |
2407 | local_info_t *local = (local_info_t *) data; | |
2408 | struct sk_buff *skb; | |
2409 | ||
2410 | while ((skb = skb_dequeue(&local->info_list)) != NULL) { | |
2411 | hostap_info_process(local, skb); | |
2412 | dev_kfree_skb(skb); | |
2413 | } | |
2414 | } | |
2415 | ||
2416 | ||
2417 | /* Called only as a tasklet (software IRQ) */ | |
2418 | static void prism2_info(local_info_t *local) | |
2419 | { | |
2420 | struct net_device *dev = local->dev; | |
2421 | u16 fid; | |
2422 | int res, left; | |
2423 | struct hfa384x_info_frame info; | |
2424 | struct sk_buff *skb; | |
2425 | ||
2426 | fid = HFA384X_INW(HFA384X_INFOFID_OFF); | |
2427 | ||
2428 | spin_lock(&local->baplock); | |
2429 | res = hfa384x_setup_bap(dev, BAP0, fid, 0); | |
2430 | if (!res) | |
2431 | res = hfa384x_from_bap(dev, BAP0, &info, sizeof(info)); | |
2432 | if (res) { | |
2433 | spin_unlock(&local->baplock); | |
2434 | printk(KERN_DEBUG "Could not get info frame (fid=0x%04x)\n", | |
2435 | fid); | |
2436 | if (res == -ETIMEDOUT) { | |
2437 | schedule_work(&local->reset_queue); | |
2438 | } | |
2439 | goto out; | |
2440 | } | |
2441 | ||
184a3b2c | 2442 | left = (le16_to_cpu(info.len) - 1) * 2; |
ff1d2767 | 2443 | |
184a3b2c | 2444 | if (info.len & cpu_to_le16(0x8000) || info.len == 0 || left > 2060) { |
ff1d2767 JM |
2445 | /* data register seems to give 0x8000 in some error cases even |
2446 | * though busy bit is not set in offset register; | |
2447 | * in addition, length must be at least 1 due to type field */ | |
2448 | spin_unlock(&local->baplock); | |
2449 | printk(KERN_DEBUG "%s: Received info frame with invalid " | |
184a3b2c AV |
2450 | "length 0x%04x (type 0x%04x)\n", dev->name, |
2451 | le16_to_cpu(info.len), le16_to_cpu(info.type)); | |
ff1d2767 JM |
2452 | goto out; |
2453 | } | |
2454 | ||
2455 | skb = dev_alloc_skb(sizeof(info) + left); | |
2456 | if (skb == NULL) { | |
2457 | spin_unlock(&local->baplock); | |
2458 | printk(KERN_DEBUG "%s: Could not allocate skb for info " | |
2459 | "frame\n", dev->name); | |
2460 | goto out; | |
2461 | } | |
2462 | ||
2463 | memcpy(skb_put(skb, sizeof(info)), &info, sizeof(info)); | |
2464 | if (left > 0 && hfa384x_from_bap(dev, BAP0, skb_put(skb, left), left)) | |
2465 | { | |
2466 | spin_unlock(&local->baplock); | |
2467 | printk(KERN_WARNING "%s: Info frame read failed (fid=0x%04x, " | |
184a3b2c AV |
2468 | "len=0x%04x, type=0x%04x\n", dev->name, fid, |
2469 | le16_to_cpu(info.len), le16_to_cpu(info.type)); | |
ff1d2767 JM |
2470 | dev_kfree_skb(skb); |
2471 | goto out; | |
2472 | } | |
2473 | spin_unlock(&local->baplock); | |
2474 | ||
2475 | skb_queue_tail(&local->info_list, skb); | |
2476 | tasklet_schedule(&local->info_tasklet); | |
2477 | ||
2478 | out: | |
2479 | HFA384X_OUTW(HFA384X_EV_INFO, HFA384X_EVACK_OFF); | |
2480 | } | |
2481 | ||
2482 | ||
2483 | /* Called only as a tasklet (software IRQ) */ | |
2484 | static void hostap_bap_tasklet(unsigned long data) | |
2485 | { | |
2486 | local_info_t *local = (local_info_t *) data; | |
2487 | struct net_device *dev = local->dev; | |
2488 | u16 ev; | |
2489 | int frames = 30; | |
2490 | ||
2491 | if (local->func->card_present && !local->func->card_present(local)) | |
2492 | return; | |
2493 | ||
2494 | set_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); | |
2495 | ||
2496 | /* Process all pending BAP events without generating new interrupts | |
2497 | * for them */ | |
2498 | while (frames-- > 0) { | |
2499 | ev = HFA384X_INW(HFA384X_EVSTAT_OFF); | |
2500 | if (ev == 0xffff || !(ev & HFA384X_BAP0_EVENTS)) | |
2501 | break; | |
2502 | if (ev & HFA384X_EV_RX) | |
2503 | prism2_rx(local); | |
2504 | if (ev & HFA384X_EV_INFO) | |
2505 | prism2_info(local); | |
2506 | if (ev & HFA384X_EV_TX) | |
2507 | prism2_tx_ev(local); | |
2508 | if (ev & HFA384X_EV_TXEXC) | |
2509 | prism2_txexc(local); | |
2510 | } | |
2511 | ||
2512 | set_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); | |
2513 | clear_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); | |
2514 | ||
2515 | /* Enable interrupts for new BAP events */ | |
2516 | hfa384x_events_all(dev); | |
2517 | clear_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); | |
2518 | } | |
2519 | ||
2520 | ||
ff1d2767 JM |
2521 | /* Called only from hardware IRQ */ |
2522 | static void prism2_infdrop(struct net_device *dev) | |
2523 | { | |
2524 | static unsigned long last_inquire = 0; | |
2525 | ||
2526 | PDEBUG(DEBUG_EXTRA, "%s: INFDROP event\n", dev->name); | |
2527 | ||
2528 | /* some firmware versions seem to get stuck with | |
2529 | * full CommTallies in high traffic load cases; every | |
2530 | * packet will then cause INFDROP event and CommTallies | |
2531 | * info frame will not be sent automatically. Try to | |
2532 | * get out of this state by inquiring CommTallies. */ | |
2533 | if (!last_inquire || time_after(jiffies, last_inquire + HZ)) { | |
2534 | hfa384x_cmd_callback(dev, HFA384X_CMDCODE_INQUIRE, | |
b15eff26 | 2535 | HFA384X_INFO_COMMTALLIES, NULL, 0); |
ff1d2767 JM |
2536 | last_inquire = jiffies; |
2537 | } | |
2538 | } | |
2539 | ||
2540 | ||
2541 | /* Called only from hardware IRQ */ | |
2542 | static void prism2_ev_tick(struct net_device *dev) | |
2543 | { | |
2544 | struct hostap_interface *iface; | |
2545 | local_info_t *local; | |
2546 | u16 evstat, inten; | |
2547 | static int prev_stuck = 0; | |
2548 | ||
2549 | iface = netdev_priv(dev); | |
2550 | local = iface->local; | |
2551 | ||
2552 | if (time_after(jiffies, local->last_tick_timer + 5 * HZ) && | |
2553 | local->last_tick_timer) { | |
2554 | evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); | |
2555 | inten = HFA384X_INW(HFA384X_INTEN_OFF); | |
2556 | if (!prev_stuck) { | |
2557 | printk(KERN_INFO "%s: SW TICK stuck? " | |
2558 | "bits=0x%lx EvStat=%04x IntEn=%04x\n", | |
2559 | dev->name, local->bits, evstat, inten); | |
2560 | } | |
2561 | local->sw_tick_stuck++; | |
2562 | if ((evstat & HFA384X_BAP0_EVENTS) && | |
2563 | (inten & HFA384X_BAP0_EVENTS)) { | |
2564 | printk(KERN_INFO "%s: trying to recover from IRQ " | |
2565 | "hang\n", dev->name); | |
2566 | hfa384x_events_no_bap0(dev); | |
2567 | } | |
2568 | prev_stuck = 1; | |
2569 | } else | |
2570 | prev_stuck = 0; | |
2571 | } | |
2572 | ||
2573 | ||
2574 | /* Called only from hardware IRQ */ | |
858119e1 | 2575 | static void prism2_check_magic(local_info_t *local) |
ff1d2767 JM |
2576 | { |
2577 | /* at least PCI Prism2.5 with bus mastering seems to sometimes | |
2578 | * return 0x0000 in SWSUPPORT0 for unknown reason, but re-reading the | |
2579 | * register once or twice seems to get the correct value.. PCI cards | |
2580 | * cannot anyway be removed during normal operation, so there is not | |
2581 | * really any need for this verification with them. */ | |
2582 | ||
2583 | #ifndef PRISM2_PCI | |
2584 | #ifndef final_version | |
2585 | static unsigned long last_magic_err = 0; | |
2586 | struct net_device *dev = local->dev; | |
2587 | ||
2588 | if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { | |
2589 | if (!local->hw_ready) | |
2590 | return; | |
2591 | HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); | |
2592 | if (time_after(jiffies, last_magic_err + 10 * HZ)) { | |
2593 | printk("%s: Interrupt, but SWSUPPORT0 does not match: " | |
2594 | "%04X != %04X - card removed?\n", dev->name, | |
2595 | HFA384X_INW(HFA384X_SWSUPPORT0_OFF), | |
2596 | HFA384X_MAGIC); | |
2597 | last_magic_err = jiffies; | |
2598 | } else if (net_ratelimit()) { | |
2599 | printk(KERN_DEBUG "%s: interrupt - SWSUPPORT0=%04x " | |
2600 | "MAGIC=%04x\n", dev->name, | |
2601 | HFA384X_INW(HFA384X_SWSUPPORT0_OFF), | |
2602 | HFA384X_MAGIC); | |
2603 | } | |
2604 | if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != 0xffff) | |
2605 | schedule_work(&local->reset_queue); | |
2606 | return; | |
2607 | } | |
2608 | #endif /* final_version */ | |
2609 | #endif /* !PRISM2_PCI */ | |
2610 | } | |
2611 | ||
2612 | ||
2613 | /* Called only from hardware IRQ */ | |
7d12e780 | 2614 | static irqreturn_t prism2_interrupt(int irq, void *dev_id) |
ff1d2767 | 2615 | { |
28fc1f5a | 2616 | struct net_device *dev = dev_id; |
ff1d2767 JM |
2617 | struct hostap_interface *iface; |
2618 | local_info_t *local; | |
2619 | int events = 0; | |
2620 | u16 ev; | |
2621 | ||
2622 | iface = netdev_priv(dev); | |
2623 | local = iface->local; | |
2624 | ||
b42e1796 | 2625 | /* Detect early interrupt before driver is fully configured */ |
d6a574ff TG |
2626 | spin_lock(&local->irq_init_lock); |
2627 | if (!dev->base_addr) { | |
2628 | if (net_ratelimit()) { | |
2629 | printk(KERN_DEBUG "%s: Interrupt, but dev not configured\n", | |
2630 | dev->name); | |
2631 | } | |
2632 | spin_unlock(&local->irq_init_lock); | |
2633 | return IRQ_HANDLED; | |
2634 | } | |
2635 | spin_unlock(&local->irq_init_lock); | |
2636 | ||
ff1d2767 JM |
2637 | prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 0); |
2638 | ||
2639 | if (local->func->card_present && !local->func->card_present(local)) { | |
2640 | if (net_ratelimit()) { | |
2641 | printk(KERN_DEBUG "%s: Interrupt, but dev not OK\n", | |
2642 | dev->name); | |
2643 | } | |
2644 | return IRQ_HANDLED; | |
2645 | } | |
2646 | ||
2647 | prism2_check_magic(local); | |
2648 | ||
2649 | for (;;) { | |
2650 | ev = HFA384X_INW(HFA384X_EVSTAT_OFF); | |
2651 | if (ev == 0xffff) { | |
2652 | if (local->shutdown) | |
2653 | return IRQ_HANDLED; | |
2654 | HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); | |
2655 | printk(KERN_DEBUG "%s: prism2_interrupt: ev=0xffff\n", | |
2656 | dev->name); | |
2657 | return IRQ_HANDLED; | |
2658 | } | |
2659 | ||
2660 | ev &= HFA384X_INW(HFA384X_INTEN_OFF); | |
2661 | if (ev == 0) | |
2662 | break; | |
2663 | ||
2664 | if (ev & HFA384X_EV_CMD) { | |
2665 | prism2_cmd_ev(dev); | |
2666 | } | |
2667 | ||
2668 | /* Above events are needed even before hw is ready, but other | |
2669 | * events should be skipped during initialization. This may | |
2670 | * change for AllocEv if allocate_fid is implemented without | |
2671 | * busy waiting. */ | |
2672 | if (!local->hw_ready || local->hw_resetting || | |
2673 | !local->dev_enabled) { | |
2674 | ev = HFA384X_INW(HFA384X_EVSTAT_OFF); | |
2675 | if (ev & HFA384X_EV_CMD) | |
2676 | goto next_event; | |
2677 | if ((ev & HFA384X_EVENT_MASK) == 0) | |
2678 | return IRQ_HANDLED; | |
2679 | if (local->dev_enabled && (ev & ~HFA384X_EV_TICK) && | |
2680 | net_ratelimit()) { | |
2681 | printk(KERN_DEBUG "%s: prism2_interrupt: hw " | |
2682 | "not ready; skipping events 0x%04x " | |
2683 | "(IntEn=0x%04x)%s%s%s\n", | |
2684 | dev->name, ev, | |
2685 | HFA384X_INW(HFA384X_INTEN_OFF), | |
2686 | !local->hw_ready ? " (!hw_ready)" : "", | |
2687 | local->hw_resetting ? | |
2688 | " (hw_resetting)" : "", | |
2689 | !local->dev_enabled ? | |
2690 | " (!dev_enabled)" : ""); | |
2691 | } | |
2692 | HFA384X_OUTW(ev, HFA384X_EVACK_OFF); | |
2693 | return IRQ_HANDLED; | |
2694 | } | |
2695 | ||
2696 | if (ev & HFA384X_EV_TICK) { | |
2697 | prism2_ev_tick(dev); | |
2698 | HFA384X_OUTW(HFA384X_EV_TICK, HFA384X_EVACK_OFF); | |
2699 | } | |
2700 | ||
ff1d2767 JM |
2701 | if (ev & HFA384X_EV_ALLOC) { |
2702 | prism2_alloc_ev(dev); | |
2703 | HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); | |
2704 | } | |
2705 | ||
2706 | /* Reading data from the card is quite time consuming, so do it | |
2707 | * in tasklets. TX, TXEXC, RX, and INFO events will be ACKed | |
2708 | * and unmasked after needed data has been read completely. */ | |
2709 | if (ev & HFA384X_BAP0_EVENTS) { | |
2710 | hfa384x_events_no_bap0(dev); | |
2711 | tasklet_schedule(&local->bap_tasklet); | |
2712 | } | |
2713 | ||
2714 | #ifndef final_version | |
2715 | if (ev & HFA384X_EV_WTERR) { | |
2716 | PDEBUG(DEBUG_EXTRA, "%s: WTERR event\n", dev->name); | |
2717 | HFA384X_OUTW(HFA384X_EV_WTERR, HFA384X_EVACK_OFF); | |
2718 | } | |
2719 | #endif /* final_version */ | |
2720 | ||
2721 | if (ev & HFA384X_EV_INFDROP) { | |
2722 | prism2_infdrop(dev); | |
2723 | HFA384X_OUTW(HFA384X_EV_INFDROP, HFA384X_EVACK_OFF); | |
2724 | } | |
2725 | ||
2726 | next_event: | |
2727 | events++; | |
2728 | if (events >= PRISM2_MAX_INTERRUPT_EVENTS) { | |
2729 | PDEBUG(DEBUG_EXTRA, "prism2_interrupt: >%d events " | |
2730 | "(EvStat=0x%04x)\n", | |
2731 | PRISM2_MAX_INTERRUPT_EVENTS, | |
2732 | HFA384X_INW(HFA384X_EVSTAT_OFF)); | |
2733 | break; | |
2734 | } | |
2735 | } | |
2736 | prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 1); | |
2737 | return IRQ_RETVAL(events); | |
2738 | } | |
2739 | ||
2740 | ||
2741 | static void prism2_check_sta_fw_version(local_info_t *local) | |
2742 | { | |
2743 | struct hfa384x_comp_ident comp; | |
2744 | int id, variant, major, minor; | |
2745 | ||
2746 | if (hfa384x_get_rid(local->dev, HFA384X_RID_STAID, | |
2747 | &comp, sizeof(comp), 1) < 0) | |
2748 | return; | |
2749 | ||
2750 | local->fw_ap = 0; | |
2751 | id = le16_to_cpu(comp.id); | |
2752 | if (id != HFA384X_COMP_ID_STA) { | |
2753 | if (id == HFA384X_COMP_ID_FW_AP) | |
2754 | local->fw_ap = 1; | |
2755 | return; | |
2756 | } | |
2757 | ||
2758 | major = __le16_to_cpu(comp.major); | |
2759 | minor = __le16_to_cpu(comp.minor); | |
2760 | variant = __le16_to_cpu(comp.variant); | |
2761 | local->sta_fw_ver = PRISM2_FW_VER(major, minor, variant); | |
2762 | ||
2763 | /* Station firmware versions before 1.4.x seem to have a bug in | |
2764 | * firmware-based WEP encryption when using Host AP mode, so use | |
2765 | * host_encrypt as a default for them. Firmware version 1.4.9 is the | |
2766 | * first one that has been seen to produce correct encryption, but the | |
2767 | * bug might be fixed before that (although, at least 1.4.2 is broken). | |
2768 | */ | |
2769 | local->fw_encrypt_ok = local->sta_fw_ver >= PRISM2_FW_VER(1,4,9); | |
2770 | ||
2771 | if (local->iw_mode == IW_MODE_MASTER && !local->host_encrypt && | |
2772 | !local->fw_encrypt_ok) { | |
2773 | printk(KERN_DEBUG "%s: defaulting to host-based encryption as " | |
2774 | "a workaround for firmware bug in Host AP mode WEP\n", | |
2775 | local->dev->name); | |
2776 | local->host_encrypt = 1; | |
2777 | } | |
2778 | ||
2779 | /* IEEE 802.11 standard compliant WDS frames (4 addresses) were broken | |
2780 | * in station firmware versions before 1.5.x. With these versions, the | |
2781 | * driver uses a workaround with bogus frame format (4th address after | |
2782 | * the payload). This is not compatible with other AP devices. Since | |
2783 | * the firmware bug is fixed in the latest station firmware versions, | |
2784 | * automatically enable standard compliant mode for cards using station | |
2785 | * firmware version 1.5.0 or newer. */ | |
2786 | if (local->sta_fw_ver >= PRISM2_FW_VER(1,5,0)) | |
2787 | local->wds_type |= HOSTAP_WDS_STANDARD_FRAME; | |
2788 | else { | |
2789 | printk(KERN_DEBUG "%s: defaulting to bogus WDS frame as a " | |
2790 | "workaround for firmware bug in Host AP mode WDS\n", | |
2791 | local->dev->name); | |
2792 | } | |
2793 | ||
2794 | hostap_check_sta_fw_version(local->ap, local->sta_fw_ver); | |
2795 | } | |
2796 | ||
2797 | ||
ff1d2767 JM |
2798 | static void hostap_passive_scan(unsigned long data) |
2799 | { | |
2800 | local_info_t *local = (local_info_t *) data; | |
2801 | struct net_device *dev = local->dev; | |
1bcca3c4 | 2802 | u16 chan; |
ff1d2767 JM |
2803 | |
2804 | if (local->passive_scan_interval <= 0) | |
2805 | return; | |
2806 | ||
2807 | if (local->passive_scan_state == PASSIVE_SCAN_LISTEN) { | |
2808 | int max_tries = 16; | |
2809 | ||
2810 | /* Even though host system does not really know when the WLAN | |
2811 | * MAC is sending frames, try to avoid changing channels for | |
2812 | * passive scanning when a host-generated frame is being | |
2813 | * transmitted */ | |
2814 | if (test_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { | |
2815 | printk(KERN_DEBUG "%s: passive scan detected pending " | |
2816 | "TX - delaying\n", dev->name); | |
2817 | local->passive_scan_timer.expires = jiffies + HZ / 10; | |
2818 | add_timer(&local->passive_scan_timer); | |
2819 | return; | |
2820 | } | |
2821 | ||
2822 | do { | |
2823 | local->passive_scan_channel++; | |
2824 | if (local->passive_scan_channel > 14) | |
2825 | local->passive_scan_channel = 1; | |
2826 | max_tries--; | |
2827 | } while (!(local->channel_mask & | |
2828 | (1 << (local->passive_scan_channel - 1))) && | |
2829 | max_tries > 0); | |
2830 | ||
2831 | if (max_tries == 0) { | |
2832 | printk(KERN_INFO "%s: no allowed passive scan channels" | |
2833 | " found\n", dev->name); | |
2834 | return; | |
2835 | } | |
2836 | ||
2837 | printk(KERN_DEBUG "%s: passive scan channel %d\n", | |
2838 | dev->name, local->passive_scan_channel); | |
1bcca3c4 | 2839 | chan = local->passive_scan_channel; |
ff1d2767 JM |
2840 | local->passive_scan_state = PASSIVE_SCAN_WAIT; |
2841 | local->passive_scan_timer.expires = jiffies + HZ / 10; | |
2842 | } else { | |
1bcca3c4 | 2843 | chan = local->channel; |
ff1d2767 JM |
2844 | local->passive_scan_state = PASSIVE_SCAN_LISTEN; |
2845 | local->passive_scan_timer.expires = jiffies + | |
2846 | local->passive_scan_interval * HZ; | |
2847 | } | |
2848 | ||
2849 | if (hfa384x_cmd_callback(dev, HFA384X_CMDCODE_TEST | | |
2850 | (HFA384X_TEST_CHANGE_CHANNEL << 8), | |
1bcca3c4 | 2851 | chan, NULL, 0)) |
ff1d2767 | 2852 | printk(KERN_ERR "%s: passive scan channel set %d " |
1bcca3c4 | 2853 | "failed\n", dev->name, chan); |
ff1d2767 JM |
2854 | |
2855 | add_timer(&local->passive_scan_timer); | |
2856 | } | |
2857 | ||
2858 | ||
2859 | /* Called only as a scheduled task when communications quality values should | |
2860 | * be updated. */ | |
c4028958 | 2861 | static void handle_comms_qual_update(struct work_struct *work) |
ff1d2767 | 2862 | { |
c4028958 DH |
2863 | local_info_t *local = |
2864 | container_of(work, local_info_t, comms_qual_update); | |
ff1d2767 JM |
2865 | prism2_update_comms_qual(local->dev); |
2866 | } | |
2867 | ||
2868 | ||
2869 | /* Software watchdog - called as a timer. Hardware interrupt (Tick event) is | |
2870 | * used to monitor that local->last_tick_timer is being updated. If not, | |
2871 | * interrupt busy-loop is assumed and driver tries to recover by masking out | |
2872 | * some events. */ | |
2873 | static void hostap_tick_timer(unsigned long data) | |
2874 | { | |
2875 | static unsigned long last_inquire = 0; | |
2876 | local_info_t *local = (local_info_t *) data; | |
2877 | local->last_tick_timer = jiffies; | |
2878 | ||
2879 | /* Inquire CommTallies every 10 seconds to keep the statistics updated | |
2880 | * more often during low load and when using 32-bit tallies. */ | |
2881 | if ((!last_inquire || time_after(jiffies, last_inquire + 10 * HZ)) && | |
2882 | !local->hw_downloading && local->hw_ready && | |
2883 | !local->hw_resetting && local->dev_enabled) { | |
2884 | hfa384x_cmd_callback(local->dev, HFA384X_CMDCODE_INQUIRE, | |
b15eff26 | 2885 | HFA384X_INFO_COMMTALLIES, NULL, 0); |
ff1d2767 JM |
2886 | last_inquire = jiffies; |
2887 | } | |
2888 | ||
2889 | if ((local->last_comms_qual_update == 0 || | |
2890 | time_after(jiffies, local->last_comms_qual_update + 10 * HZ)) && | |
2891 | (local->iw_mode == IW_MODE_INFRA || | |
2892 | local->iw_mode == IW_MODE_ADHOC)) { | |
2893 | schedule_work(&local->comms_qual_update); | |
2894 | } | |
2895 | ||
2896 | local->tick_timer.expires = jiffies + 2 * HZ; | |
2897 | add_timer(&local->tick_timer); | |
2898 | } | |
2899 | ||
2900 | ||
2901 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
6bbefe86 | 2902 | static int prism2_registers_proc_show(struct seq_file *m, void *v) |
ff1d2767 | 2903 | { |
6bbefe86 | 2904 | local_info_t *local = m->private; |
ff1d2767 JM |
2905 | |
2906 | #define SHOW_REG(n) \ | |
6bbefe86 | 2907 | seq_printf(m, #n "=%04x\n", hfa384x_read_reg(local->dev, HFA384X_##n##_OFF)) |
ff1d2767 JM |
2908 | |
2909 | SHOW_REG(CMD); | |
2910 | SHOW_REG(PARAM0); | |
2911 | SHOW_REG(PARAM1); | |
2912 | SHOW_REG(PARAM2); | |
2913 | SHOW_REG(STATUS); | |
2914 | SHOW_REG(RESP0); | |
2915 | SHOW_REG(RESP1); | |
2916 | SHOW_REG(RESP2); | |
2917 | SHOW_REG(INFOFID); | |
2918 | SHOW_REG(CONTROL); | |
2919 | SHOW_REG(SELECT0); | |
2920 | SHOW_REG(SELECT1); | |
2921 | SHOW_REG(OFFSET0); | |
2922 | SHOW_REG(OFFSET1); | |
2923 | SHOW_REG(RXFID); | |
2924 | SHOW_REG(ALLOCFID); | |
2925 | SHOW_REG(TXCOMPLFID); | |
2926 | SHOW_REG(SWSUPPORT0); | |
2927 | SHOW_REG(SWSUPPORT1); | |
2928 | SHOW_REG(SWSUPPORT2); | |
2929 | SHOW_REG(EVSTAT); | |
2930 | SHOW_REG(INTEN); | |
2931 | SHOW_REG(EVACK); | |
2932 | /* Do not read data registers, because they change the state of the | |
2933 | * MAC (offset += 2) */ | |
2934 | /* SHOW_REG(DATA0); */ | |
2935 | /* SHOW_REG(DATA1); */ | |
2936 | SHOW_REG(AUXPAGE); | |
2937 | SHOW_REG(AUXOFFSET); | |
2938 | /* SHOW_REG(AUXDATA); */ | |
2939 | #ifdef PRISM2_PCI | |
2940 | SHOW_REG(PCICOR); | |
2941 | SHOW_REG(PCIHCR); | |
2942 | SHOW_REG(PCI_M0_ADDRH); | |
2943 | SHOW_REG(PCI_M0_ADDRL); | |
2944 | SHOW_REG(PCI_M0_LEN); | |
2945 | SHOW_REG(PCI_M0_CTL); | |
2946 | SHOW_REG(PCI_STATUS); | |
2947 | SHOW_REG(PCI_M1_ADDRH); | |
2948 | SHOW_REG(PCI_M1_ADDRL); | |
2949 | SHOW_REG(PCI_M1_LEN); | |
2950 | SHOW_REG(PCI_M1_CTL); | |
2951 | #endif /* PRISM2_PCI */ | |
2952 | ||
6bbefe86 | 2953 | return 0; |
ff1d2767 | 2954 | } |
6bbefe86 DH |
2955 | |
2956 | static int prism2_registers_proc_open(struct inode *inode, struct file *file) | |
2957 | { | |
2958 | return single_open(file, prism2_registers_proc_show, PDE_DATA(inode)); | |
2959 | } | |
2960 | ||
2961 | static const struct file_operations prism2_registers_proc_fops = { | |
2962 | .open = prism2_registers_proc_open, | |
2963 | .read = seq_read, | |
2964 | .llseek = seq_lseek, | |
bc3041f0 | 2965 | .release = single_release, |
6bbefe86 DH |
2966 | }; |
2967 | ||
ff1d2767 JM |
2968 | #endif /* PRISM2_NO_PROCFS_DEBUG */ |
2969 | ||
2970 | ||
2971 | struct set_tim_data { | |
2972 | struct list_head list; | |
2973 | int aid; | |
2974 | int set; | |
2975 | }; | |
2976 | ||
2977 | static int prism2_set_tim(struct net_device *dev, int aid, int set) | |
2978 | { | |
2979 | struct list_head *ptr; | |
2980 | struct set_tim_data *new_entry; | |
2981 | struct hostap_interface *iface; | |
2982 | local_info_t *local; | |
2983 | ||
2984 | iface = netdev_priv(dev); | |
2985 | local = iface->local; | |
2986 | ||
b0471bb7 | 2987 | new_entry = kzalloc(sizeof(*new_entry), GFP_ATOMIC); |
e404decb | 2988 | if (new_entry == NULL) |
ff1d2767 | 2989 | return -ENOMEM; |
e404decb | 2990 | |
ff1d2767 JM |
2991 | new_entry->aid = aid; |
2992 | new_entry->set = set; | |
2993 | ||
2994 | spin_lock_bh(&local->set_tim_lock); | |
2995 | list_for_each(ptr, &local->set_tim_list) { | |
2996 | struct set_tim_data *entry = | |
2997 | list_entry(ptr, struct set_tim_data, list); | |
2998 | if (entry->aid == aid) { | |
2999 | PDEBUG(DEBUG_PS2, "%s: prism2_set_tim: aid=%d " | |
3000 | "set=%d ==> %d\n", | |
3001 | local->dev->name, aid, entry->set, set); | |
3002 | entry->set = set; | |
3003 | kfree(new_entry); | |
3004 | new_entry = NULL; | |
3005 | break; | |
3006 | } | |
3007 | } | |
3008 | if (new_entry) | |
3009 | list_add_tail(&new_entry->list, &local->set_tim_list); | |
3010 | spin_unlock_bh(&local->set_tim_lock); | |
3011 | ||
3012 | schedule_work(&local->set_tim_queue); | |
3013 | ||
3014 | return 0; | |
3015 | } | |
3016 | ||
3017 | ||
c4028958 | 3018 | static void handle_set_tim_queue(struct work_struct *work) |
ff1d2767 | 3019 | { |
c4028958 | 3020 | local_info_t *local = container_of(work, local_info_t, set_tim_queue); |
ff1d2767 JM |
3021 | struct set_tim_data *entry; |
3022 | u16 val; | |
3023 | ||
3024 | for (;;) { | |
3025 | entry = NULL; | |
3026 | spin_lock_bh(&local->set_tim_lock); | |
3027 | if (!list_empty(&local->set_tim_list)) { | |
3028 | entry = list_entry(local->set_tim_list.next, | |
3029 | struct set_tim_data, list); | |
3030 | list_del(&entry->list); | |
3031 | } | |
3032 | spin_unlock_bh(&local->set_tim_lock); | |
3033 | if (!entry) | |
3034 | break; | |
3035 | ||
3036 | PDEBUG(DEBUG_PS2, "%s: handle_set_tim_queue: aid=%d set=%d\n", | |
3037 | local->dev->name, entry->aid, entry->set); | |
3038 | ||
3039 | val = entry->aid; | |
3040 | if (entry->set) | |
3041 | val |= 0x8000; | |
3042 | if (hostap_set_word(local->dev, HFA384X_RID_CNFTIMCTRL, val)) { | |
3043 | printk(KERN_DEBUG "%s: set_tim failed (aid=%d " | |
3044 | "set=%d)\n", | |
3045 | local->dev->name, entry->aid, entry->set); | |
3046 | } | |
3047 | ||
3048 | kfree(entry); | |
3049 | } | |
3050 | } | |
3051 | ||
3052 | ||
3053 | static void prism2_clear_set_tim_queue(local_info_t *local) | |
3054 | { | |
3055 | struct list_head *ptr, *n; | |
3056 | ||
3057 | list_for_each_safe(ptr, n, &local->set_tim_list) { | |
3058 | struct set_tim_data *entry; | |
3059 | entry = list_entry(ptr, struct set_tim_data, list); | |
3060 | list_del(&entry->list); | |
3061 | kfree(entry); | |
3062 | } | |
3063 | } | |
3064 | ||
3065 | ||
cd11acdd AV |
3066 | /* |
3067 | * HostAP uses two layers of net devices, where the inner | |
3068 | * layer gets called all the time from the outer layer. | |
3069 | * This is a natural nesting, which needs a split lock type. | |
3070 | */ | |
3071 | static struct lock_class_key hostap_netdev_xmit_lock_key; | |
cf508b12 | 3072 | static struct lock_class_key hostap_netdev_addr_lock_key; |
cd11acdd | 3073 | |
e8a0464c DM |
3074 | static void prism2_set_lockdep_class_one(struct net_device *dev, |
3075 | struct netdev_queue *txq, | |
3076 | void *_unused) | |
c773e847 DM |
3077 | { |
3078 | lockdep_set_class(&txq->_xmit_lock, | |
3079 | &hostap_netdev_xmit_lock_key); | |
3080 | } | |
3081 | ||
3082 | static void prism2_set_lockdep_class(struct net_device *dev) | |
3083 | { | |
cf508b12 DM |
3084 | lockdep_set_class(&dev->addr_list_lock, |
3085 | &hostap_netdev_addr_lock_key); | |
e8a0464c | 3086 | netdev_for_each_tx_queue(dev, prism2_set_lockdep_class_one, NULL); |
c773e847 | 3087 | } |
cd11acdd | 3088 | |
ff1d2767 | 3089 | static struct net_device * |
0cd545d6 DH |
3090 | prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx, |
3091 | struct device *sdev) | |
ff1d2767 JM |
3092 | { |
3093 | struct net_device *dev; | |
3094 | struct hostap_interface *iface; | |
3095 | struct local_info *local; | |
3096 | int len, i, ret; | |
3097 | ||
3098 | if (funcs == NULL) | |
3099 | return NULL; | |
3100 | ||
3101 | len = strlen(dev_template); | |
3102 | if (len >= IFNAMSIZ || strstr(dev_template, "%d") == NULL) { | |
3103 | printk(KERN_WARNING "hostap: Invalid dev_template='%s'\n", | |
3104 | dev_template); | |
3105 | return NULL; | |
3106 | } | |
3107 | ||
3108 | len = sizeof(struct hostap_interface) + | |
3109 | 3 + sizeof(struct local_info) + | |
3110 | 3 + sizeof(struct ap_data); | |
3111 | ||
3112 | dev = alloc_etherdev(len); | |
3113 | if (dev == NULL) | |
3114 | return NULL; | |
3115 | ||
3116 | iface = netdev_priv(dev); | |
3117 | local = (struct local_info *) ((((long) (iface + 1)) + 3) & ~3); | |
3118 | local->ap = (struct ap_data *) ((((long) (local + 1)) + 3) & ~3); | |
3119 | local->dev = iface->dev = dev; | |
3120 | iface->local = local; | |
3121 | iface->type = HOSTAP_INTERFACE_MASTER; | |
3122 | INIT_LIST_HEAD(&local->hostap_interfaces); | |
3123 | ||
3124 | local->hw_module = THIS_MODULE; | |
3125 | ||
3126 | #ifdef PRISM2_IO_DEBUG | |
3127 | local->io_debug_enabled = 1; | |
3128 | #endif /* PRISM2_IO_DEBUG */ | |
3129 | ||
ff1d2767 JM |
3130 | local->func = funcs; |
3131 | local->func->cmd = hfa384x_cmd; | |
3132 | local->func->read_regs = hfa384x_read_regs; | |
3133 | local->func->get_rid = hfa384x_get_rid; | |
3134 | local->func->set_rid = hfa384x_set_rid; | |
3135 | local->func->hw_enable = prism2_hw_enable; | |
3136 | local->func->hw_config = prism2_hw_config; | |
3137 | local->func->hw_reset = prism2_hw_reset; | |
3138 | local->func->hw_shutdown = prism2_hw_shutdown; | |
3139 | local->func->reset_port = prism2_reset_port; | |
3140 | local->func->schedule_reset = prism2_schedule_reset; | |
3141 | #ifdef PRISM2_DOWNLOAD_SUPPORT | |
6bbefe86 | 3142 | local->func->read_aux_fops = &prism2_download_aux_dump_proc_fops; |
ff1d2767 JM |
3143 | local->func->download = prism2_download; |
3144 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ | |
3145 | local->func->tx = prism2_tx_80211; | |
3146 | local->func->set_tim = prism2_set_tim; | |
3147 | local->func->need_tx_headroom = 0; /* no need to add txdesc in | |
3148 | * skb->data (FIX: maybe for DMA bus | |
3149 | * mastering? */ | |
3150 | ||
3151 | local->mtu = mtu; | |
3152 | ||
3153 | rwlock_init(&local->iface_lock); | |
3154 | spin_lock_init(&local->txfidlock); | |
3155 | spin_lock_init(&local->cmdlock); | |
3156 | spin_lock_init(&local->baplock); | |
3157 | spin_lock_init(&local->lock); | |
d6a574ff | 3158 | spin_lock_init(&local->irq_init_lock); |
3623060a | 3159 | mutex_init(&local->rid_bap_mtx); |
ff1d2767 JM |
3160 | |
3161 | if (card_idx < 0 || card_idx >= MAX_PARM_DEVICES) | |
3162 | card_idx = 0; | |
3163 | local->card_idx = card_idx; | |
3164 | ||
3165 | len = strlen(essid); | |
3166 | memcpy(local->essid, essid, | |
3167 | len > MAX_SSID_LEN ? MAX_SSID_LEN : len); | |
3168 | local->essid[MAX_SSID_LEN] = '\0'; | |
3169 | i = GET_INT_PARM(iw_mode, card_idx); | |
3170 | if ((i >= IW_MODE_ADHOC && i <= IW_MODE_REPEAT) || | |
3171 | i == IW_MODE_MONITOR) { | |
3172 | local->iw_mode = i; | |
3173 | } else { | |
3174 | printk(KERN_WARNING "prism2: Unknown iw_mode %d; using " | |
3175 | "IW_MODE_MASTER\n", i); | |
3176 | local->iw_mode = IW_MODE_MASTER; | |
3177 | } | |
3178 | local->channel = GET_INT_PARM(channel, card_idx); | |
3179 | local->beacon_int = GET_INT_PARM(beacon_int, card_idx); | |
3180 | local->dtim_period = GET_INT_PARM(dtim_period, card_idx); | |
3181 | local->wds_max_connections = 16; | |
3182 | local->tx_control = HFA384X_TX_CTRL_FLAGS; | |
3183 | local->manual_retry_count = -1; | |
3184 | local->rts_threshold = 2347; | |
3185 | local->fragm_threshold = 2346; | |
3186 | local->rssi_to_dBm = 100; /* default; to be overriden by | |
3187 | * cnfDbmAdjust, if available */ | |
3188 | local->auth_algs = PRISM2_AUTH_OPEN | PRISM2_AUTH_SHARED_KEY; | |
3189 | local->sram_type = -1; | |
72ca9c61 | 3190 | local->scan_channel_mask = 0xffff; |
7cd8d3ea | 3191 | local->monitor_type = PRISM2_MONITOR_RADIOTAP; |
ff1d2767 JM |
3192 | |
3193 | /* Initialize task queue structures */ | |
c4028958 | 3194 | INIT_WORK(&local->reset_queue, handle_reset_queue); |
ff1d2767 | 3195 | INIT_WORK(&local->set_multicast_list_queue, |
c4028958 | 3196 | hostap_set_multicast_list_queue); |
ff1d2767 | 3197 | |
c4028958 | 3198 | INIT_WORK(&local->set_tim_queue, handle_set_tim_queue); |
ff1d2767 JM |
3199 | INIT_LIST_HEAD(&local->set_tim_list); |
3200 | spin_lock_init(&local->set_tim_lock); | |
3201 | ||
c4028958 | 3202 | INIT_WORK(&local->comms_qual_update, handle_comms_qual_update); |
ff1d2767 JM |
3203 | |
3204 | /* Initialize tasklets for handling hardware IRQ related operations | |
3205 | * outside hw IRQ handler */ | |
3206 | #define HOSTAP_TASKLET_INIT(q, f, d) \ | |
3207 | do { memset((q), 0, sizeof(*(q))); (q)->func = (f); (q)->data = (d); } \ | |
3208 | while (0) | |
3209 | HOSTAP_TASKLET_INIT(&local->bap_tasklet, hostap_bap_tasklet, | |
3210 | (unsigned long) local); | |
3211 | ||
3212 | HOSTAP_TASKLET_INIT(&local->info_tasklet, hostap_info_tasklet, | |
3213 | (unsigned long) local); | |
3214 | hostap_info_init(local); | |
3215 | ||
3216 | HOSTAP_TASKLET_INIT(&local->rx_tasklet, | |
3217 | hostap_rx_tasklet, (unsigned long) local); | |
3218 | skb_queue_head_init(&local->rx_list); | |
3219 | ||
3220 | HOSTAP_TASKLET_INIT(&local->sta_tx_exc_tasklet, | |
3221 | hostap_sta_tx_exc_tasklet, (unsigned long) local); | |
3222 | skb_queue_head_init(&local->sta_tx_exc_list); | |
3223 | ||
3224 | INIT_LIST_HEAD(&local->cmd_queue); | |
3225 | init_waitqueue_head(&local->hostscan_wq); | |
274bfb8d | 3226 | |
2ba4b32e | 3227 | lib80211_crypt_info_init(&local->crypt_info, dev->name, &local->lock); |
ff1d2767 JM |
3228 | |
3229 | init_timer(&local->passive_scan_timer); | |
3230 | local->passive_scan_timer.data = (unsigned long) local; | |
3231 | local->passive_scan_timer.function = hostap_passive_scan; | |
3232 | ||
3233 | init_timer(&local->tick_timer); | |
3234 | local->tick_timer.data = (unsigned long) local; | |
3235 | local->tick_timer.function = hostap_tick_timer; | |
3236 | local->tick_timer.expires = jiffies + 2 * HZ; | |
3237 | add_timer(&local->tick_timer); | |
3238 | ||
3239 | INIT_LIST_HEAD(&local->bss_list); | |
3240 | ||
09703f5e | 3241 | hostap_setup_dev(dev, local, HOSTAP_INTERFACE_MASTER); |
ff1d2767 | 3242 | |
ff1d2767 | 3243 | dev->type = ARPHRD_IEEE80211; |
3b04ddde | 3244 | dev->header_ops = &hostap_80211_ops; |
ff1d2767 JM |
3245 | |
3246 | rtnl_lock(); | |
3247 | ret = dev_alloc_name(dev, "wifi%d"); | |
0cd545d6 | 3248 | SET_NETDEV_DEV(dev, sdev); |
ff1d2767 JM |
3249 | if (ret >= 0) |
3250 | ret = register_netdevice(dev); | |
cd11acdd | 3251 | |
c773e847 | 3252 | prism2_set_lockdep_class(dev); |
ff1d2767 JM |
3253 | rtnl_unlock(); |
3254 | if (ret < 0) { | |
3255 | printk(KERN_WARNING "%s: register netdevice failed!\n", | |
3256 | dev_info); | |
3257 | goto fail; | |
3258 | } | |
3259 | printk(KERN_INFO "%s: Registered netdevice %s\n", dev_info, dev->name); | |
3260 | ||
ff1d2767 JM |
3261 | hostap_init_data(local); |
3262 | return dev; | |
3263 | ||
3264 | fail: | |
ff1d2767 JM |
3265 | free_netdev(dev); |
3266 | return NULL; | |
3267 | } | |
3268 | ||
3269 | ||
3270 | static int hostap_hw_ready(struct net_device *dev) | |
3271 | { | |
3272 | struct hostap_interface *iface; | |
3273 | struct local_info *local; | |
3274 | ||
3275 | iface = netdev_priv(dev); | |
3276 | local = iface->local; | |
3277 | local->ddev = hostap_add_interface(local, HOSTAP_INTERFACE_MAIN, 0, | |
3278 | "", dev_template); | |
3279 | ||
3280 | if (local->ddev) { | |
3281 | if (local->iw_mode == IW_MODE_INFRA || | |
3282 | local->iw_mode == IW_MODE_ADHOC) { | |
3283 | netif_carrier_off(local->dev); | |
3284 | netif_carrier_off(local->ddev); | |
3285 | } | |
3286 | hostap_init_proc(local); | |
23f40dc6 | 3287 | #ifndef PRISM2_NO_PROCFS_DEBUG |
6bbefe86 DH |
3288 | proc_create_data("registers", 0, local->proc, |
3289 | &prism2_registers_proc_fops, local); | |
23f40dc6 | 3290 | #endif /* PRISM2_NO_PROCFS_DEBUG */ |
ff1d2767 JM |
3291 | hostap_init_ap_proc(local); |
3292 | return 0; | |
3293 | } | |
3294 | ||
3295 | return -1; | |
3296 | } | |
3297 | ||
3298 | ||
3299 | static void prism2_free_local_data(struct net_device *dev) | |
3300 | { | |
3301 | struct hostap_tx_callback_info *tx_cb, *tx_cb_prev; | |
3302 | int i; | |
3303 | struct hostap_interface *iface; | |
3304 | struct local_info *local; | |
3305 | struct list_head *ptr, *n; | |
3306 | ||
3307 | if (dev == NULL) | |
3308 | return; | |
3309 | ||
3310 | iface = netdev_priv(dev); | |
3311 | local = iface->local; | |
3312 | ||
7cb3cd09 JM |
3313 | /* Unregister all netdevs before freeing local data. */ |
3314 | list_for_each_safe(ptr, n, &local->hostap_interfaces) { | |
3315 | iface = list_entry(ptr, struct hostap_interface, list); | |
3316 | if (iface->type == HOSTAP_INTERFACE_MASTER) { | |
3317 | /* special handling for this interface below */ | |
3318 | continue; | |
3319 | } | |
3320 | hostap_remove_interface(iface->dev, 0, 1); | |
3321 | } | |
3322 | ||
3323 | unregister_netdev(local->dev); | |
3324 | ||
43829731 TH |
3325 | flush_work(&local->reset_queue); |
3326 | flush_work(&local->set_multicast_list_queue); | |
3327 | flush_work(&local->set_tim_queue); | |
16359533 | 3328 | #ifndef PRISM2_NO_STATION_MODES |
43829731 | 3329 | flush_work(&local->info_queue); |
16359533 | 3330 | #endif |
43829731 | 3331 | flush_work(&local->comms_qual_update); |
ff1d2767 | 3332 | |
2ba4b32e | 3333 | lib80211_crypt_info_free(&local->crypt_info); |
ff1d2767 JM |
3334 | |
3335 | if (timer_pending(&local->passive_scan_timer)) | |
3336 | del_timer(&local->passive_scan_timer); | |
3337 | ||
3338 | if (timer_pending(&local->tick_timer)) | |
3339 | del_timer(&local->tick_timer); | |
3340 | ||
3341 | prism2_clear_cmd_queue(local); | |
3342 | ||
3343 | skb_queue_purge(&local->info_list); | |
3344 | skb_queue_purge(&local->rx_list); | |
3345 | skb_queue_purge(&local->sta_tx_exc_list); | |
3346 | ||
3347 | if (local->dev_enabled) | |
3348 | prism2_callback(local, PRISM2_CALLBACK_DISABLE); | |
3349 | ||
ff1d2767 JM |
3350 | if (local->ap != NULL) |
3351 | hostap_free_data(local->ap); | |
3352 | ||
3353 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
3354 | if (local->proc != NULL) | |
3355 | remove_proc_entry("registers", local->proc); | |
3356 | #endif /* PRISM2_NO_PROCFS_DEBUG */ | |
3357 | hostap_remove_proc(local); | |
3358 | ||
3359 | tx_cb = local->tx_callback; | |
3360 | while (tx_cb != NULL) { | |
3361 | tx_cb_prev = tx_cb; | |
3362 | tx_cb = tx_cb->next; | |
3363 | kfree(tx_cb_prev); | |
3364 | } | |
3365 | ||
3366 | hostap_set_hostapd(local, 0, 0); | |
3367 | hostap_set_hostapd_sta(local, 0, 0); | |
3368 | ||
3369 | for (i = 0; i < PRISM2_FRAG_CACHE_LEN; i++) { | |
3370 | if (local->frag_cache[i].skb != NULL) | |
3371 | dev_kfree_skb(local->frag_cache[i].skb); | |
3372 | } | |
3373 | ||
3374 | #ifdef PRISM2_DOWNLOAD_SUPPORT | |
3375 | prism2_download_free_data(local->dl_pri); | |
3376 | prism2_download_free_data(local->dl_sec); | |
3377 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ | |
3378 | ||
ff1d2767 JM |
3379 | prism2_clear_set_tim_queue(local); |
3380 | ||
3381 | list_for_each_safe(ptr, n, &local->bss_list) { | |
3382 | struct hostap_bss_info *bss = | |
3383 | list_entry(ptr, struct hostap_bss_info, list); | |
3384 | kfree(bss); | |
3385 | } | |
3386 | ||
ff1d2767 JM |
3387 | kfree(local->pda); |
3388 | kfree(local->last_scan_results); | |
3389 | kfree(local->generic_elem); | |
3390 | ||
ff1d2767 JM |
3391 | free_netdev(local->dev); |
3392 | } | |
3393 | ||
3394 | ||
0ac2a00c | 3395 | #if (defined(PRISM2_PCI) && defined(CONFIG_PM)) || defined(PRISM2_PCCARD) |
ff1d2767 JM |
3396 | static void prism2_suspend(struct net_device *dev) |
3397 | { | |
3398 | struct hostap_interface *iface; | |
3399 | struct local_info *local; | |
3400 | union iwreq_data wrqu; | |
3401 | ||
6dbc9c89 | 3402 | iface = netdev_priv(dev); |
ff1d2767 JM |
3403 | local = iface->local; |
3404 | ||
3405 | /* Send disconnect event, e.g., to trigger reassociation after resume | |
3406 | * if wpa_supplicant is used. */ | |
3407 | memset(&wrqu, 0, sizeof(wrqu)); | |
3408 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
3409 | wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL); | |
3410 | ||
3411 | /* Disable hardware and firmware */ | |
3412 | prism2_hw_shutdown(dev, 0); | |
3413 | } | |
0ac2a00c | 3414 | #endif /* (PRISM2_PCI && CONFIG_PM) || PRISM2_PCCARD */ |
ff1d2767 JM |
3415 | |
3416 | ||
3417 | /* These might at some point be compiled separately and used as separate | |
3418 | * kernel modules or linked into one */ | |
3419 | #ifdef PRISM2_DOWNLOAD_SUPPORT | |
3420 | #include "hostap_download.c" | |
3421 | #endif /* PRISM2_DOWNLOAD_SUPPORT */ | |
3422 | ||
3423 | #ifdef PRISM2_CALLBACK | |
3424 | /* External hostap_callback.c file can be used to, e.g., blink activity led. | |
3425 | * This can use platform specific code and must define prism2_callback() | |
3426 | * function (if PRISM2_CALLBACK is not defined, these function calls are not | |
3427 | * used. */ | |
3428 | #include "hostap_callback.c" | |
3429 | #endif /* PRISM2_CALLBACK */ |