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