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[PATCH] UFS: inode->i_sem is not released in error path
[linux-2.6/verdex.git] / drivers / net / wireless / hostap / hostap_hw.c
blobabfae7fedebcfcc31a75b9631b8e6bcd993bd287
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>
7 * Copyright (c) 2002-2005, Jouni Malinen <jkmaline@cc.hut.fi>
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
35 #include <asm/delay.h>
36 #include <asm/uaccess.h>
37
38 #include <linux/slab.h>
39 #include <linux/netdevice.h>
40 #include <linux/etherdevice.h>
41 #include <linux/proc_fs.h>
42 #include <linux/if_arp.h>
43 #include <linux/delay.h>
44 #include <linux/random.h>
45 #include <linux/wait.h>
46 #include <linux/sched.h>
47 #include <linux/rtnetlink.h>
48 #include <linux/wireless.h>
49 #include <net/iw_handler.h>
50 #include <net/ieee80211.h>
51 #include <net/ieee80211_crypt.h>
52 #include <asm/irq.h>
53
54 #include "hostap_80211.h"
55 #include "hostap.h"
56 #include "hostap_ap.h"
57
58
59 /* #define final_version */
60
61 static int mtu = 1500;
62 module_param(mtu, int, 0444);
63 MODULE_PARM_DESC(mtu, "Maximum transfer unit");
64
65 static int channel[MAX_PARM_DEVICES] = { 3, DEF_INTS };
66 module_param_array(channel, int, NULL, 0444);
67 MODULE_PARM_DESC(channel, "Initial channel");
68
69 static char essid[33] = "test";
70 module_param_string(essid, essid, sizeof(essid), 0444);
71 MODULE_PARM_DESC(essid, "Host AP's ESSID");
72
73 static int iw_mode[MAX_PARM_DEVICES] = { IW_MODE_MASTER, DEF_INTS };
74 module_param_array(iw_mode, int, NULL, 0444);
75 MODULE_PARM_DESC(iw_mode, "Initial operation mode");
76
77 static int beacon_int[MAX_PARM_DEVICES] = { 100, DEF_INTS };
78 module_param_array(beacon_int, int, NULL, 0444);
79 MODULE_PARM_DESC(beacon_int, "Beacon interval (1 = 1024 usec)");
80
81 static int dtim_period[MAX_PARM_DEVICES] = { 1, DEF_INTS };
82 module_param_array(dtim_period, int, NULL, 0444);
83 MODULE_PARM_DESC(dtim_period, "DTIM period");
84
85 static char dev_template[16] = "wlan%d";
86 module_param_string(dev_template, dev_template, sizeof(dev_template), 0444);
87 MODULE_PARM_DESC(dev_template, "Prefix for network device name (default: "
88 "wlan%d)");
89
90 #ifdef final_version
91 #define EXTRA_EVENTS_WTERR 0
92 #else
93 /* check WTERR events (Wait Time-out) in development versions */
94 #define EXTRA_EVENTS_WTERR HFA384X_EV_WTERR
95 #endif
96
97 /* Events that will be using BAP0 */
98 #define HFA384X_BAP0_EVENTS \
99 (HFA384X_EV_TXEXC | HFA384X_EV_RX | HFA384X_EV_INFO | HFA384X_EV_TX)
100
101 /* event mask, i.e., events that will result in an interrupt */
102 #define HFA384X_EVENT_MASK \
103 (HFA384X_BAP0_EVENTS | HFA384X_EV_ALLOC | HFA384X_EV_INFDROP | \
104 HFA384X_EV_CMD | HFA384X_EV_TICK | \
105 EXTRA_EVENTS_WTERR)
106
107 /* Default TX control flags: use 802.11 headers and request interrupt for
108 * failed transmits. Frames that request ACK callback, will add
109 * _TX_OK flag and _ALT_RTRY flag may be used to select different retry policy.
110 */
111 #define HFA384X_TX_CTRL_FLAGS \
112 (HFA384X_TX_CTRL_802_11 | HFA384X_TX_CTRL_TX_EX)
113
114
115 /* ca. 1 usec */
116 #define HFA384X_CMD_BUSY_TIMEOUT 5000
117 #define HFA384X_BAP_BUSY_TIMEOUT 50000
118
119 /* ca. 10 usec */
120 #define HFA384X_CMD_COMPL_TIMEOUT 20000
121 #define HFA384X_DL_COMPL_TIMEOUT 1000000
122
123 /* Wait times for initialization; yield to other processes to avoid busy
124 * waiting for long time. */
125 #define HFA384X_INIT_TIMEOUT (HZ / 2) /* 500 ms */
126 #define HFA384X_ALLOC_COMPL_TIMEOUT (HZ / 20) /* 50 ms */
127
128
129 static void prism2_hw_reset(struct net_device *dev);
130 static void prism2_check_sta_fw_version(local_info_t *local);
131
132 #ifdef PRISM2_DOWNLOAD_SUPPORT
133 /* hostap_download.c */
134 static int prism2_download_aux_dump(struct net_device *dev,
135 unsigned int addr, int len, u8 *buf);
136 static u8 * prism2_read_pda(struct net_device *dev);
137 static int prism2_download(local_info_t *local,
138 struct prism2_download_param *param);
139 static void prism2_download_free_data(struct prism2_download_data *dl);
140 static int prism2_download_volatile(local_info_t *local,
141 struct prism2_download_data *param);
142 static int prism2_download_genesis(local_info_t *local,
143 struct prism2_download_data *param);
144 static int prism2_get_ram_size(local_info_t *local);
145 #endif /* PRISM2_DOWNLOAD_SUPPORT */
146
147
148
149
150 #ifndef final_version
151 /* magic value written to SWSUPPORT0 reg. for detecting whether card is still
152 * present */
153 #define HFA384X_MAGIC 0x8A32
154 #endif
155
156
157 static u16 hfa384x_read_reg(struct net_device *dev, u16 reg)
158 {
159 return HFA384X_INW(reg);
160 }
161
162
163 static void hfa384x_read_regs(struct net_device *dev,
164 struct hfa384x_regs *regs)
165 {
166 regs->cmd = HFA384X_INW(HFA384X_CMD_OFF);
167 regs->evstat = HFA384X_INW(HFA384X_EVSTAT_OFF);
168 regs->offset0 = HFA384X_INW(HFA384X_OFFSET0_OFF);
169 regs->offset1 = HFA384X_INW(HFA384X_OFFSET1_OFF);
170 regs->swsupport0 = HFA384X_INW(HFA384X_SWSUPPORT0_OFF);
171 }
172
173
174 /**
175 * __hostap_cmd_queue_free - Free Prism2 command queue entry (private)
176 * @local: pointer to private Host AP driver data
177 * @entry: Prism2 command queue entry to be freed
178 * @del_req: request the entry to be removed
179 *
180 * Internal helper function for freeing Prism2 command queue entries.
181 * Caller must have acquired local->cmdlock before calling this function.
182 */
183 static inline void __hostap_cmd_queue_free(local_info_t *local,
184 struct hostap_cmd_queue *entry,
185 int del_req)
186 {
187 if (del_req) {
188 entry->del_req = 1;
189 if (!list_empty(&entry->list)) {
190 list_del_init(&entry->list);
191 local->cmd_queue_len--;
192 }
193 }
194
195 if (atomic_dec_and_test(&entry->usecnt) && entry->del_req)
196 kfree(entry);
197 }
198
199
200 /**
201 * hostap_cmd_queue_free - Free Prism2 command queue entry
202 * @local: pointer to private Host AP driver data
203 * @entry: Prism2 command queue entry to be freed
204 * @del_req: request the entry to be removed
205 *
206 * Free a Prism2 command queue entry.
207 */
208 static inline void hostap_cmd_queue_free(local_info_t *local,
209 struct hostap_cmd_queue *entry,
210 int del_req)
211 {
212 unsigned long flags;
213
214 spin_lock_irqsave(&local->cmdlock, flags);
215 __hostap_cmd_queue_free(local, entry, del_req);
216 spin_unlock_irqrestore(&local->cmdlock, flags);
217 }
218
219
220 /**
221 * prism2_clear_cmd_queue - Free all pending Prism2 command queue entries
222 * @local: pointer to private Host AP driver data
223 */
224 static void prism2_clear_cmd_queue(local_info_t *local)
225 {
226 struct list_head *ptr, *n;
227 unsigned long flags;
228 struct hostap_cmd_queue *entry;
229
230 spin_lock_irqsave(&local->cmdlock, flags);
231 list_for_each_safe(ptr, n, &local->cmd_queue) {
232 entry = list_entry(ptr, struct hostap_cmd_queue, list);
233 atomic_inc(&entry->usecnt);
234 printk(KERN_DEBUG "%s: removed pending cmd_queue entry "
235 "(type=%d, cmd=0x%04x, param0=0x%04x)\n",
236 local->dev->name, entry->type, entry->cmd,
237 entry->param0);
238 __hostap_cmd_queue_free(local, entry, 1);
239 }
240 if (local->cmd_queue_len) {
241 /* This should not happen; print debug message and clear
242 * queue length. */
243 printk(KERN_DEBUG "%s: cmd_queue_len (%d) not zero after "
244 "flush\n", local->dev->name, local->cmd_queue_len);
245 local->cmd_queue_len = 0;
246 }
247 spin_unlock_irqrestore(&local->cmdlock, flags);
248 }
249
250
251 /**
252 * hfa384x_cmd_issue - Issue a Prism2 command to the hardware
253 * @dev: pointer to net_device
254 * @entry: Prism2 command queue entry to be issued
255 */
256 static inline int hfa384x_cmd_issue(struct net_device *dev,
257 struct hostap_cmd_queue *entry)
258 {
259 struct hostap_interface *iface;
260 local_info_t *local;
261 int tries;
262 u16 reg;
263 unsigned long flags;
264
265 iface = netdev_priv(dev);
266 local = iface->local;
267
268 if (local->func->card_present && !local->func->card_present(local))
269 return -ENODEV;
270
271 if (entry->issued) {
272 printk(KERN_DEBUG "%s: driver bug - re-issuing command @%p\n",
273 dev->name, entry);
274 }
275
276 /* wait until busy bit is clear; this should always be clear since the
277 * commands are serialized */
278 tries = HFA384X_CMD_BUSY_TIMEOUT;
279 while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) {
280 tries--;
281 udelay(1);
282 }
283 #ifndef final_version
284 if (tries != HFA384X_CMD_BUSY_TIMEOUT) {
285 prism2_io_debug_error(dev, 1);
286 printk(KERN_DEBUG "%s: hfa384x_cmd_issue: cmd reg was busy "
287 "for %d usec\n", dev->name,
288 HFA384X_CMD_BUSY_TIMEOUT - tries);
289 }
290 #endif
291 if (tries == 0) {
292 reg = HFA384X_INW(HFA384X_CMD_OFF);
293 prism2_io_debug_error(dev, 2);
294 printk(KERN_DEBUG "%s: hfa384x_cmd_issue - timeout - "
295 "reg=0x%04x\n", dev->name, reg);
296 return -ETIMEDOUT;
297 }
298
299 /* write command */
300 spin_lock_irqsave(&local->cmdlock, flags);
301 HFA384X_OUTW(entry->param0, HFA384X_PARAM0_OFF);
302 HFA384X_OUTW(entry->param1, HFA384X_PARAM1_OFF);
303 HFA384X_OUTW(entry->cmd, HFA384X_CMD_OFF);
304 entry->issued = 1;
305 spin_unlock_irqrestore(&local->cmdlock, flags);
306
307 return 0;
308 }
309
310
311 /**
312 * hfa384x_cmd - Issue a Prism2 command and wait (sleep) for completion
313 * @dev: pointer to net_device
314 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
315 * @param0: value for Param0 register
316 * @param1: value for Param1 register (pointer; %NULL if not used)
317 * @resp0: pointer for Resp0 data or %NULL if Resp0 is not needed
318 *
319 * Issue given command (possibly after waiting in command queue) and sleep
320 * until the command is completed (or timed out or interrupted). This can be
321 * called only from user process context.
322 */
323 static int hfa384x_cmd(struct net_device *dev, u16 cmd, u16 param0,
324 u16 *param1, u16 *resp0)
325 {
326 struct hostap_interface *iface;
327 local_info_t *local;
328 int err, res, issue, issued = 0;
329 unsigned long flags;
330 struct hostap_cmd_queue *entry;
331 DECLARE_WAITQUEUE(wait, current);
332
333 iface = netdev_priv(dev);
334 local = iface->local;
335
336 if (in_interrupt()) {
337 printk(KERN_DEBUG "%s: hfa384x_cmd called from interrupt "
338 "context\n", dev->name);
339 return -1;
340 }
341
342 if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN) {
343 printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n",
344 dev->name);
345 return -1;
346 }
347
348 if (signal_pending(current))
349 return -EINTR;
350
351 entry = (struct hostap_cmd_queue *)
352 kmalloc(sizeof(*entry), GFP_ATOMIC);
353 if (entry == NULL) {
354 printk(KERN_DEBUG "%s: hfa384x_cmd - kmalloc failed\n",
355 dev->name);
356 return -ENOMEM;
357 }
358 memset(entry, 0, sizeof(*entry));
359 atomic_set(&entry->usecnt, 1);
360 entry->type = CMD_SLEEP;
361 entry->cmd = cmd;
362 entry->param0 = param0;
363 if (param1)
364 entry->param1 = *param1;
365 init_waitqueue_head(&entry->compl);
366
367 /* prepare to wait for command completion event, but do not sleep yet
368 */
369 add_wait_queue(&entry->compl, &wait);
370 set_current_state(TASK_INTERRUPTIBLE);
371
372 spin_lock_irqsave(&local->cmdlock, flags);
373 issue = list_empty(&local->cmd_queue);
374 if (issue)
375 entry->issuing = 1;
376 list_add_tail(&entry->list, &local->cmd_queue);
377 local->cmd_queue_len++;
378 spin_unlock_irqrestore(&local->cmdlock, flags);
379
380 err = 0;
381 if (!issue)
382 goto wait_completion;
383
384 if (signal_pending(current))
385 err = -EINTR;
386
387 if (!err) {
388 if (hfa384x_cmd_issue(dev, entry))
389 err = -ETIMEDOUT;
390 else
391 issued = 1;
392 }
393
394 wait_completion:
395 if (!err && entry->type != CMD_COMPLETED) {
396 /* sleep until command is completed or timed out */
397 res = schedule_timeout(2 * HZ);
398 } else
399 res = -1;
400
401 if (!err && signal_pending(current))
402 err = -EINTR;
403
404 if (err && issued) {
405 /* the command was issued, so a CmdCompl event should occur
406 * soon; however, there's a pending signal and
407 * schedule_timeout() would be interrupted; wait a short period
408 * of time to avoid removing entry from the list before
409 * CmdCompl event */
410 udelay(300);
411 }
412
413 set_current_state(TASK_RUNNING);
414 remove_wait_queue(&entry->compl, &wait);
415
416 /* If entry->list is still in the list, it must be removed
417 * first and in this case prism2_cmd_ev() does not yet have
418 * local reference to it, and the data can be kfree()'d
419 * here. If the command completion event is still generated,
420 * it will be assigned to next (possibly) pending command, but
421 * the driver will reset the card anyway due to timeout
422 *
423 * If the entry is not in the list prism2_cmd_ev() has a local
424 * reference to it, but keeps cmdlock as long as the data is
425 * needed, so the data can be kfree()'d here. */
426
427 /* FIX: if the entry->list is in the list, it has not been completed
428 * yet, so removing it here is somewhat wrong.. this could cause
429 * references to freed memory and next list_del() causing NULL pointer
430 * dereference.. it would probably be better to leave the entry in the
431 * list and the list should be emptied during hw reset */
432
433 spin_lock_irqsave(&local->cmdlock, flags);
434 if (!list_empty(&entry->list)) {
435 printk(KERN_DEBUG "%s: hfa384x_cmd: entry still in list? "
436 "(entry=%p, type=%d, res=%d)\n", dev->name, entry,
437 entry->type, res);
438 list_del_init(&entry->list);
439 local->cmd_queue_len--;
440 }
441 spin_unlock_irqrestore(&local->cmdlock, flags);
442
443 if (err) {
444 printk(KERN_DEBUG "%s: hfa384x_cmd: interrupted; err=%d\n",
445 dev->name, err);
446 res = err;
447 goto done;
448 }
449
450 if (entry->type != CMD_COMPLETED) {
451 u16 reg = HFA384X_INW(HFA384X_EVSTAT_OFF);
452 printk(KERN_DEBUG "%s: hfa384x_cmd: command was not "
453 "completed (res=%d, entry=%p, type=%d, cmd=0x%04x, "
454 "param0=0x%04x, EVSTAT=%04x INTEN=%04x)\n", dev->name,
455 res, entry, entry->type, entry->cmd, entry->param0, reg,
456 HFA384X_INW(HFA384X_INTEN_OFF));
457 if (reg & HFA384X_EV_CMD) {
458 /* Command completion event is pending, but the
459 * interrupt was not delivered - probably an issue
460 * with pcmcia-cs configuration. */
461 printk(KERN_WARNING "%s: interrupt delivery does not "
462 "seem to work\n", dev->name);
463 }
464 prism2_io_debug_error(dev, 3);
465 res = -ETIMEDOUT;
466 goto done;
467 }
468
469 if (resp0 != NULL)
470 *resp0 = entry->resp0;
471 #ifndef final_version
472 if (entry->res) {
473 printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x, "
474 "resp0=0x%04x\n",
475 dev->name, cmd, entry->res, entry->resp0);
476 }
477 #endif /* final_version */
478
479 res = entry->res;
480 done:
481 hostap_cmd_queue_free(local, entry, 1);
482 return res;
483 }
484
485
486 /**
487 * hfa384x_cmd_callback - Issue a Prism2 command; callback when completed
488 * @dev: pointer to net_device
489 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
490 * @param0: value for Param0 register
491 * @callback: command completion callback function (%NULL = no callback)
492 * @context: context data to be given to the callback function
493 *
494 * Issue given command (possibly after waiting in command queue) and use
495 * callback function to indicate command completion. This can be called both
496 * from user and interrupt context. The callback function will be called in
497 * hardware IRQ context. It can be %NULL, when no function is called when
498 * command is completed.
499 */
500 static int hfa384x_cmd_callback(struct net_device *dev, u16 cmd, u16 param0,
501 void (*callback)(struct net_device *dev,
502 long context, u16 resp0,
503 u16 status),
504 long context)
505 {
506 struct hostap_interface *iface;
507 local_info_t *local;
508 int issue, ret;
509 unsigned long flags;
510 struct hostap_cmd_queue *entry;
511
512 iface = netdev_priv(dev);
513 local = iface->local;
514
515 if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN + 2) {
516 printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n",
517 dev->name);
518 return -1;
519 }
520
521 entry = (struct hostap_cmd_queue *)
522 kmalloc(sizeof(*entry), GFP_ATOMIC);
523 if (entry == NULL) {
524 printk(KERN_DEBUG "%s: hfa384x_cmd_callback - kmalloc "
525 "failed\n", dev->name);
526 return -ENOMEM;
527 }
528 memset(entry, 0, sizeof(*entry));
529 atomic_set(&entry->usecnt, 1);
530 entry->type = CMD_CALLBACK;
531 entry->cmd = cmd;
532 entry->param0 = param0;
533 entry->callback = callback;
534 entry->context = context;
535
536 spin_lock_irqsave(&local->cmdlock, flags);
537 issue = list_empty(&local->cmd_queue);
538 if (issue)
539 entry->issuing = 1;
540 list_add_tail(&entry->list, &local->cmd_queue);
541 local->cmd_queue_len++;
542 spin_unlock_irqrestore(&local->cmdlock, flags);
543
544 if (issue && hfa384x_cmd_issue(dev, entry))
545 ret = -ETIMEDOUT;
546 else
547 ret = 0;
548
549 hostap_cmd_queue_free(local, entry, ret);
550
551 return ret;
552 }
553
554
555 /**
556 * __hfa384x_cmd_no_wait - Issue a Prism2 command (private)
557 * @dev: pointer to net_device
558 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
559 * @param0: value for Param0 register
560 * @io_debug_num: I/O debug error number
561 *
562 * Shared helper function for hfa384x_cmd_wait() and hfa384x_cmd_no_wait().
563 */
564 static int __hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, u16 param0,
565 int io_debug_num)
566 {
567 int tries;
568 u16 reg;
569
570 /* wait until busy bit is clear; this should always be clear since the
571 * commands are serialized */
572 tries = HFA384X_CMD_BUSY_TIMEOUT;
573 while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) {
574 tries--;
575 udelay(1);
576 }
577 if (tries == 0) {
578 reg = HFA384X_INW(HFA384X_CMD_OFF);
579 prism2_io_debug_error(dev, io_debug_num);
580 printk(KERN_DEBUG "%s: __hfa384x_cmd_no_wait(%d) - timeout - "
581 "reg=0x%04x\n", dev->name, io_debug_num, reg);
582 return -ETIMEDOUT;
583 }
584
585 /* write command */
586 HFA384X_OUTW(param0, HFA384X_PARAM0_OFF);
587 HFA384X_OUTW(cmd, HFA384X_CMD_OFF);
588
589 return 0;
590 }
591
592
593 /**
594 * hfa384x_cmd_wait - Issue a Prism2 command and busy wait for completion
595 * @dev: pointer to net_device
596 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
597 * @param0: value for Param0 register
598 */
599 static int hfa384x_cmd_wait(struct net_device *dev, u16 cmd, u16 param0)
600 {
601 int res, tries;
602 u16 reg;
603
604 res = __hfa384x_cmd_no_wait(dev, cmd, param0, 4);
605 if (res)
606 return res;
607
608 /* wait for command completion */
609 if ((cmd & HFA384X_CMDCODE_MASK) == HFA384X_CMDCODE_DOWNLOAD)
610 tries = HFA384X_DL_COMPL_TIMEOUT;
611 else
612 tries = HFA384X_CMD_COMPL_TIMEOUT;
613
614 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) &&
615 tries > 0) {
616 tries--;
617 udelay(10);
618 }
619 if (tries == 0) {
620 reg = HFA384X_INW(HFA384X_EVSTAT_OFF);
621 prism2_io_debug_error(dev, 5);
622 printk(KERN_DEBUG "%s: hfa384x_cmd_wait - timeout2 - "
623 "reg=0x%04x\n", dev->name, reg);
624 return -ETIMEDOUT;
625 }
626
627 res = (HFA384X_INW(HFA384X_STATUS_OFF) &
628 (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | BIT(9) |
629 BIT(8))) >> 8;
630 #ifndef final_version
631 if (res) {
632 printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x\n",
633 dev->name, cmd, res);
634 }
635 #endif
636
637 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
638
639 return res;
640 }
641
642
643 /**
644 * hfa384x_cmd_no_wait - Issue a Prism2 command; do not wait for completion
645 * @dev: pointer to net_device
646 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
647 * @param0: value for Param0 register
648 */
649 static inline int hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd,
650 u16 param0)
651 {
652 return __hfa384x_cmd_no_wait(dev, cmd, param0, 6);
653 }
654
655
656 /**
657 * prism2_cmd_ev - Prism2 command completion event handler
658 * @dev: pointer to net_device
659 *
660 * Interrupt handler for command completion events. Called by the main
661 * interrupt handler in hardware IRQ context. Read Resp0 and status registers
662 * from the hardware and ACK the event. Depending on the issued command type
663 * either wake up the sleeping process that is waiting for command completion
664 * or call the callback function. Issue the next command, if one is pending.
665 */
666 static void prism2_cmd_ev(struct net_device *dev)
667 {
668 struct hostap_interface *iface;
669 local_info_t *local;
670 struct hostap_cmd_queue *entry = NULL;
671
672 iface = netdev_priv(dev);
673 local = iface->local;
674
675 spin_lock(&local->cmdlock);
676 if (!list_empty(&local->cmd_queue)) {
677 entry = list_entry(local->cmd_queue.next,
678 struct hostap_cmd_queue, list);
679 atomic_inc(&entry->usecnt);
680 list_del_init(&entry->list);
681 local->cmd_queue_len--;
682
683 if (!entry->issued) {
684 printk(KERN_DEBUG "%s: Command completion event, but "
685 "cmd not issued\n", dev->name);
686 __hostap_cmd_queue_free(local, entry, 1);
687 entry = NULL;
688 }
689 }
690 spin_unlock(&local->cmdlock);
691
692 if (!entry) {
693 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
694 printk(KERN_DEBUG "%s: Command completion event, but no "
695 "pending commands\n", dev->name);
696 return;
697 }
698
699 entry->resp0 = HFA384X_INW(HFA384X_RESP0_OFF);
700 entry->res = (HFA384X_INW(HFA384X_STATUS_OFF) &
701 (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) |
702 BIT(9) | BIT(8))) >> 8;
703 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
704
705 /* TODO: rest of the CmdEv handling could be moved to tasklet */
706 if (entry->type == CMD_SLEEP) {
707 entry->type = CMD_COMPLETED;
708 wake_up_interruptible(&entry->compl);
709 } else if (entry->type == CMD_CALLBACK) {
710 if (entry->callback)
711 entry->callback(dev, entry->context, entry->resp0,
712 entry->res);
713 } else {
714 printk(KERN_DEBUG "%s: Invalid command completion type %d\n",
715 dev->name, entry->type);
716 }
717 hostap_cmd_queue_free(local, entry, 1);
718
719 /* issue next command, if pending */
720 entry = NULL;
721 spin_lock(&local->cmdlock);
722 if (!list_empty(&local->cmd_queue)) {
723 entry = list_entry(local->cmd_queue.next,
724 struct hostap_cmd_queue, list);
725 if (entry->issuing) {
726 /* hfa384x_cmd() has already started issuing this
727 * command, so do not start here */
728 entry = NULL;
729 }
730 if (entry)
731 atomic_inc(&entry->usecnt);
732 }
733 spin_unlock(&local->cmdlock);
734
735 if (entry) {
736 /* issue next command; if command issuing fails, remove the
737 * entry from cmd_queue */
738 int res = hfa384x_cmd_issue(dev, entry);
739 spin_lock(&local->cmdlock);
740 __hostap_cmd_queue_free(local, entry, res);
741 spin_unlock(&local->cmdlock);
742 }
743 }
744
745
746 static inline int hfa384x_wait_offset(struct net_device *dev, u16 o_off)
747 {
748 int tries = HFA384X_BAP_BUSY_TIMEOUT;
749 int res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY;
750
751 while (res && tries > 0) {
752 tries--;
753 udelay(1);
754 res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY;
755 }
756 return res;
757 }
758
759
760 /* Offset must be even */
761 static int hfa384x_setup_bap(struct net_device *dev, u16 bap, u16 id,
762 int offset)
763 {
764 u16 o_off, s_off;
765 int ret = 0;
766
767 if (offset % 2 || bap > 1)
768 return -EINVAL;
769
770 if (bap == BAP1) {
771 o_off = HFA384X_OFFSET1_OFF;
772 s_off = HFA384X_SELECT1_OFF;
773 } else {
774 o_off = HFA384X_OFFSET0_OFF;
775 s_off = HFA384X_SELECT0_OFF;
776 }
777
778 if (hfa384x_wait_offset(dev, o_off)) {
779 prism2_io_debug_error(dev, 7);
780 printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout before\n",
781 dev->name);
782 ret = -ETIMEDOUT;
783 goto out;
784 }
785
786 HFA384X_OUTW(id, s_off);
787 HFA384X_OUTW(offset, o_off);
788
789 if (hfa384x_wait_offset(dev, o_off)) {
790 prism2_io_debug_error(dev, 8);
791 printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout after\n",
792 dev->name);
793 ret = -ETIMEDOUT;
794 goto out;
795 }
796 #ifndef final_version
797 if (HFA384X_INW(o_off) & HFA384X_OFFSET_ERR) {
798 prism2_io_debug_error(dev, 9);
799 printk(KERN_DEBUG "%s: hfa384x_setup_bap - offset error "
800 "(%d,0x04%x,%d); reg=0x%04x\n",
801 dev->name, bap, id, offset, HFA384X_INW(o_off));
802 ret = -EINVAL;
803 }
804 #endif
805
806 out:
807 return ret;
808 }
809
810
811 static int hfa384x_get_rid(struct net_device *dev, u16 rid, void *buf, int len,
812 int exact_len)
813 {
814 struct hostap_interface *iface;
815 local_info_t *local;
816 int res, rlen = 0;
817 struct hfa384x_rid_hdr rec;
818
819 iface = netdev_priv(dev);
820 local = iface->local;
821
822 if (local->no_pri) {
823 printk(KERN_DEBUG "%s: cannot get RID %04x (len=%d) - no PRI "
824 "f/w\n", dev->name, rid, len);
825 return -ENOTTY; /* Well.. not really correct, but return
826 * something unique enough.. */
827 }
828
829 if ((local->func->card_present && !local->func->card_present(local)) ||
830 local->hw_downloading)
831 return -ENODEV;
832
833 res = down_interruptible(&local->rid_bap_sem);
834 if (res)
835 return res;
836
837 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS, rid, NULL, NULL);
838 if (res) {
839 printk(KERN_DEBUG "%s: hfa384x_get_rid: CMDCODE_ACCESS failed "
840 "(res=%d, rid=%04x, len=%d)\n",
841 dev->name, res, rid, len);
842 up(&local->rid_bap_sem);
843 return res;
844 }
845
846 spin_lock_bh(&local->baplock);
847
848 res = hfa384x_setup_bap(dev, BAP0, rid, 0);
849 if (!res)
850 res = hfa384x_from_bap(dev, BAP0, &rec, sizeof(rec));
851
852 if (le16_to_cpu(rec.len) == 0) {
853 /* RID not available */
854 res = -ENODATA;
855 }
856
857 rlen = (le16_to_cpu(rec.len) - 1) * 2;
858 if (!res && exact_len && rlen != len) {
859 printk(KERN_DEBUG "%s: hfa384x_get_rid - RID len mismatch: "
860 "rid=0x%04x, len=%d (expected %d)\n",
861 dev->name, rid, rlen, len);
862 res = -ENODATA;
863 }
864
865 if (!res)
866 res = hfa384x_from_bap(dev, BAP0, buf, len);
867
868 spin_unlock_bh(&local->baplock);
869 up(&local->rid_bap_sem);
870
871 if (res) {
872 if (res != -ENODATA)
873 printk(KERN_DEBUG "%s: hfa384x_get_rid (rid=%04x, "
874 "len=%d) - failed - res=%d\n", dev->name, rid,
875 len, res);
876 if (res == -ETIMEDOUT)
877 prism2_hw_reset(dev);
878 return res;
879 }
880
881 return rlen;
882 }
883
884
885 static int hfa384x_set_rid(struct net_device *dev, u16 rid, void *buf, int len)
886 {
887 struct hostap_interface *iface;
888 local_info_t *local;
889 struct hfa384x_rid_hdr rec;
890 int res;
891
892 iface = netdev_priv(dev);
893 local = iface->local;
894
895 if (local->no_pri) {
896 printk(KERN_DEBUG "%s: cannot set RID %04x (len=%d) - no PRI "
897 "f/w\n", dev->name, rid, len);
898 return -ENOTTY; /* Well.. not really correct, but return
899 * something unique enough.. */
900 }
901
902 if ((local->func->card_present && !local->func->card_present(local)) ||
903 local->hw_downloading)
904 return -ENODEV;
905
906 rec.rid = cpu_to_le16(rid);
907 /* RID len in words and +1 for rec.rid */
908 rec.len = cpu_to_le16(len / 2 + len % 2 + 1);
909
910 res = down_interruptible(&local->rid_bap_sem);
911 if (res)
912 return res;
913
914 spin_lock_bh(&local->baplock);
915 res = hfa384x_setup_bap(dev, BAP0, rid, 0);
916 if (!res)
917 res = hfa384x_to_bap(dev, BAP0, &rec, sizeof(rec));
918 if (!res)
919 res = hfa384x_to_bap(dev, BAP0, buf, len);
920 spin_unlock_bh(&local->baplock);
921
922 if (res) {
923 printk(KERN_DEBUG "%s: hfa384x_set_rid (rid=%04x, len=%d) - "
924 "failed - res=%d\n", dev->name, rid, len, res);
925 up(&local->rid_bap_sem);
926 return res;
927 }
928
929 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS_WRITE, rid, NULL, NULL);
930 up(&local->rid_bap_sem);
931 if (res) {
932 printk(KERN_DEBUG "%s: hfa384x_set_rid: CMDCODE_ACCESS_WRITE "
933 "failed (res=%d, rid=%04x, len=%d)\n",
934 dev->name, res, rid, len);
935 return res;
936 }
937
938 if (res == -ETIMEDOUT)
939 prism2_hw_reset(dev);
940
941 return res;
942 }
943
944
945 static void hfa384x_disable_interrupts(struct net_device *dev)
946 {
947 /* disable interrupts and clear event status */
948 HFA384X_OUTW(0, HFA384X_INTEN_OFF);
949 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
950 }
951
952
953 static void hfa384x_enable_interrupts(struct net_device *dev)
954 {
955 /* ack pending events and enable interrupts from selected events */
956 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
957 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF);
958 }
959
960
961 static void hfa384x_events_no_bap0(struct net_device *dev)
962 {
963 HFA384X_OUTW(HFA384X_EVENT_MASK & ~HFA384X_BAP0_EVENTS,
964 HFA384X_INTEN_OFF);
965 }
966
967
968 static void hfa384x_events_all(struct net_device *dev)
969 {
970 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF);
971 }
972
973
974 static void hfa384x_events_only_cmd(struct net_device *dev)
975 {
976 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_INTEN_OFF);
977 }
978
979
980 static u16 hfa384x_allocate_fid(struct net_device *dev, int len)
981 {
982 u16 fid;
983 unsigned long delay;
984
985 /* FIX: this could be replace with hfa384x_cmd() if the Alloc event
986 * below would be handled like CmdCompl event (sleep here, wake up from
987 * interrupt handler */
988 if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_ALLOC, len)) {
989 printk(KERN_DEBUG "%s: cannot allocate fid, len=%d\n",
990 dev->name, len);
991 return 0xffff;
992 }
993
994 delay = jiffies + HFA384X_ALLOC_COMPL_TIMEOUT;
995 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC) &&
996 time_before(jiffies, delay))
997 yield();
998 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC)) {
999 printk("%s: fid allocate, len=%d - timeout\n", dev->name, len);
1000 return 0xffff;
1001 }
1002
1003 fid = HFA384X_INW(HFA384X_ALLOCFID_OFF);
1004 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF);
1005
1006 return fid;
1007 }
1008
1009
1010 static int prism2_reset_port(struct net_device *dev)
1011 {
1012 struct hostap_interface *iface;
1013 local_info_t *local;
1014 int res;
1015
1016 iface = netdev_priv(dev);
1017 local = iface->local;
1018
1019 if (!local->dev_enabled)
1020 return 0;
1021
1022 res = hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0,
1023 NULL, NULL);
1024 if (res)
1025 printk(KERN_DEBUG "%s: reset port failed to disable port\n",
1026 dev->name);
1027 else {
1028 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0,
1029 NULL, NULL);
1030 if (res)
1031 printk(KERN_DEBUG "%s: reset port failed to enable "
1032 "port\n", dev->name);
1033 }
1034
1035 /* It looks like at least some STA firmware versions reset
1036 * fragmentation threshold back to 2346 after enable command. Restore
1037 * the configured value, if it differs from this default. */
1038 if (local->fragm_threshold != 2346 &&
1039 hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD,
1040 local->fragm_threshold)) {
1041 printk(KERN_DEBUG "%s: failed to restore fragmentation "
1042 "threshold (%d) after Port0 enable\n",
1043 dev->name, local->fragm_threshold);
1044 }
1045
1046 return res;
1047 }
1048
1049
1050 static int prism2_get_version_info(struct net_device *dev, u16 rid,
1051 const char *txt)
1052 {
1053 struct hfa384x_comp_ident comp;
1054 struct hostap_interface *iface;
1055 local_info_t *local;
1056
1057 iface = netdev_priv(dev);
1058 local = iface->local;
1059
1060 if (local->no_pri) {
1061 /* PRI f/w not yet available - cannot read RIDs */
1062 return -1;
1063 }
1064 if (hfa384x_get_rid(dev, rid, &comp, sizeof(comp), 1) < 0) {
1065 printk(KERN_DEBUG "Could not get RID for component %s\n", txt);
1066 return -1;
1067 }
1068
1069 printk(KERN_INFO "%s: %s: id=0x%02x v%d.%d.%d\n", dev->name, txt,
1070 __le16_to_cpu(comp.id), __le16_to_cpu(comp.major),
1071 __le16_to_cpu(comp.minor), __le16_to_cpu(comp.variant));
1072 return 0;
1073 }
1074
1075
1076 static int prism2_setup_rids(struct net_device *dev)
1077 {
1078 struct hostap_interface *iface;
1079 local_info_t *local;
1080 u16 tmp;
1081 int ret = 0;
1082
1083 iface = netdev_priv(dev);
1084 local = iface->local;
1085
1086 hostap_set_word(dev, HFA384X_RID_TICKTIME, 2000);
1087
1088 if (!local->fw_ap) {
1089 tmp = hostap_get_porttype(local);
1090 ret = hostap_set_word(dev, HFA384X_RID_CNFPORTTYPE, tmp);
1091 if (ret) {
1092 printk("%s: Port type setting to %d failed\n",
1093 dev->name, tmp);
1094 goto fail;
1095 }
1096 }
1097
1098 /* Setting SSID to empty string seems to kill the card in Host AP mode
1099 */
1100 if (local->iw_mode != IW_MODE_MASTER || local->essid[0] != '\0') {
1101 ret = hostap_set_string(dev, HFA384X_RID_CNFOWNSSID,
1102 local->essid);
1103 if (ret) {
1104 printk("%s: AP own SSID setting failed\n", dev->name);
1105 goto fail;
1106 }
1107 }
1108
1109 ret = hostap_set_word(dev, HFA384X_RID_CNFMAXDATALEN,
1110 PRISM2_DATA_MAXLEN);
1111 if (ret) {
1112 printk("%s: MAC data length setting to %d failed\n",
1113 dev->name, PRISM2_DATA_MAXLEN);
1114 goto fail;
1115 }
1116
1117 if (hfa384x_get_rid(dev, HFA384X_RID_CHANNELLIST, &tmp, 2, 1) < 0) {
1118 printk("%s: Channel list read failed\n", dev->name);
1119 ret = -EINVAL;
1120 goto fail;
1121 }
1122 local->channel_mask = __le16_to_cpu(tmp);
1123
1124 if (local->channel < 1 || local->channel > 14 ||
1125 !(local->channel_mask & (1 << (local->channel - 1)))) {
1126 printk(KERN_WARNING "%s: Channel setting out of range "
1127 "(%d)!\n", dev->name, local->channel);
1128 ret = -EBUSY;
1129 goto fail;
1130 }
1131
1132 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNCHANNEL, local->channel);
1133 if (ret) {
1134 printk("%s: Channel setting to %d failed\n",
1135 dev->name, local->channel);
1136 goto fail;
1137 }
1138
1139 ret = hostap_set_word(dev, HFA384X_RID_CNFBEACONINT,
1140 local->beacon_int);
1141 if (ret) {
1142 printk("%s: Beacon interval setting to %d failed\n",
1143 dev->name, local->beacon_int);
1144 /* this may fail with Symbol/Lucent firmware */
1145 if (ret == -ETIMEDOUT)
1146 goto fail;
1147 }
1148
1149 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNDTIMPERIOD,
1150 local->dtim_period);
1151 if (ret) {
1152 printk("%s: DTIM period setting to %d failed\n",
1153 dev->name, local->dtim_period);
1154 /* this may fail with Symbol/Lucent firmware */
1155 if (ret == -ETIMEDOUT)
1156 goto fail;
1157 }
1158
1159 ret = hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE,
1160 local->is_promisc);
1161 if (ret)
1162 printk(KERN_INFO "%s: Setting promiscuous mode (%d) failed\n",
1163 dev->name, local->is_promisc);
1164
1165 if (!local->fw_ap) {
1166 ret = hostap_set_string(dev, HFA384X_RID_CNFDESIREDSSID,
1167 local->essid);
1168 if (ret) {
1169 printk("%s: Desired SSID setting failed\n", dev->name);
1170 goto fail;
1171 }
1172 }
1173
1174 /* Setup TXRateControl, defaults to allow use of 1, 2, 5.5, and
1175 * 11 Mbps in automatic TX rate fallback and 1 and 2 Mbps as basic
1176 * rates */
1177 if (local->tx_rate_control == 0) {
1178 local->tx_rate_control =
1179 HFA384X_RATES_1MBPS |
1180 HFA384X_RATES_2MBPS |
1181 HFA384X_RATES_5MBPS |
1182 HFA384X_RATES_11MBPS;
1183 }
1184 if (local->basic_rates == 0)
1185 local->basic_rates = HFA384X_RATES_1MBPS | HFA384X_RATES_2MBPS;
1186
1187 if (!local->fw_ap) {
1188 ret = hostap_set_word(dev, HFA384X_RID_TXRATECONTROL,
1189 local->tx_rate_control);
1190 if (ret) {
1191 printk("%s: TXRateControl setting to %d failed\n",
1192 dev->name, local->tx_rate_control);
1193 goto fail;
1194 }
1195
1196 ret = hostap_set_word(dev, HFA384X_RID_CNFSUPPORTEDRATES,
1197 local->tx_rate_control);
1198 if (ret) {
1199 printk("%s: cnfSupportedRates setting to %d failed\n",
1200 dev->name, local->tx_rate_control);
1201 }
1202
1203 ret = hostap_set_word(dev, HFA384X_RID_CNFBASICRATES,
1204 local->basic_rates);
1205 if (ret) {
1206 printk("%s: cnfBasicRates setting to %d failed\n",
1207 dev->name, local->basic_rates);
1208 }
1209
1210 ret = hostap_set_word(dev, HFA384X_RID_CREATEIBSS, 1);
1211 if (ret) {
1212 printk("%s: Create IBSS setting to 1 failed\n",
1213 dev->name);
1214 }
1215 }
1216
1217 if (local->name_set)
1218 (void) hostap_set_string(dev, HFA384X_RID_CNFOWNNAME,
1219 local->name);
1220
1221 if (hostap_set_encryption(local)) {
1222 printk(KERN_INFO "%s: could not configure encryption\n",
1223 dev->name);
1224 }
1225
1226 (void) hostap_set_antsel(local);
1227
1228 if (hostap_set_roaming(local)) {
1229 printk(KERN_INFO "%s: could not set host roaming\n",
1230 dev->name);
1231 }
1232
1233 if (local->sta_fw_ver >= PRISM2_FW_VER(1,6,3) &&
1234 hostap_set_word(dev, HFA384X_RID_CNFENHSECURITY, local->enh_sec))
1235 printk(KERN_INFO "%s: cnfEnhSecurity setting to 0x%x failed\n",
1236 dev->name, local->enh_sec);
1237
1238 /* 32-bit tallies were added in STA f/w 0.8.0, but they were apparently
1239 * not working correctly (last seven counters report bogus values).
1240 * This has been fixed in 0.8.2, so enable 32-bit tallies only
1241 * beginning with that firmware version. Another bug fix for 32-bit
1242 * tallies in 1.4.0; should 16-bit tallies be used for some other
1243 * versions, too? */
1244 if (local->sta_fw_ver >= PRISM2_FW_VER(0,8,2)) {
1245 if (hostap_set_word(dev, HFA384X_RID_CNFTHIRTY2TALLY, 1)) {
1246 printk(KERN_INFO "%s: cnfThirty2Tally setting "
1247 "failed\n", dev->name);
1248 local->tallies32 = 0;
1249 } else
1250 local->tallies32 = 1;
1251 } else
1252 local->tallies32 = 0;
1253
1254 hostap_set_auth_algs(local);
1255
1256 if (hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD,
1257 local->fragm_threshold)) {
1258 printk(KERN_INFO "%s: setting FragmentationThreshold to %d "
1259 "failed\n", dev->name, local->fragm_threshold);
1260 }
1261
1262 if (hostap_set_word(dev, HFA384X_RID_RTSTHRESHOLD,
1263 local->rts_threshold)) {
1264 printk(KERN_INFO "%s: setting RTSThreshold to %d failed\n",
1265 dev->name, local->rts_threshold);
1266 }
1267
1268 if (local->manual_retry_count >= 0 &&
1269 hostap_set_word(dev, HFA384X_RID_CNFALTRETRYCOUNT,
1270 local->manual_retry_count)) {
1271 printk(KERN_INFO "%s: setting cnfAltRetryCount to %d failed\n",
1272 dev->name, local->manual_retry_count);
1273 }
1274
1275 if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1) &&
1276 hfa384x_get_rid(dev, HFA384X_RID_CNFDBMADJUST, &tmp, 2, 1) == 2) {
1277 local->rssi_to_dBm = le16_to_cpu(tmp);
1278 }
1279
1280 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->wpa &&
1281 hostap_set_word(dev, HFA384X_RID_SSNHANDLINGMODE, 1)) {
1282 printk(KERN_INFO "%s: setting ssnHandlingMode to 1 failed\n",
1283 dev->name);
1284 }
1285
1286 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->generic_elem &&
1287 hfa384x_set_rid(dev, HFA384X_RID_GENERICELEMENT,
1288 local->generic_elem, local->generic_elem_len)) {
1289 printk(KERN_INFO "%s: setting genericElement failed\n",
1290 dev->name);
1291 }
1292
1293 fail:
1294 return ret;
1295 }
1296
1297
1298 static int prism2_hw_init(struct net_device *dev, int initial)
1299 {
1300 struct hostap_interface *iface;
1301 local_info_t *local;
1302 int ret, first = 1;
1303 unsigned long start, delay;
1304
1305 PDEBUG(DEBUG_FLOW, "prism2_hw_init()\n");
1306
1307 iface = netdev_priv(dev);
1308 local = iface->local;
1309
1310 clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits);
1311
1312 init:
1313 /* initialize HFA 384x */
1314 ret = hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_INIT, 0);
1315 if (ret) {
1316 printk(KERN_INFO "%s: first command failed - assuming card "
1317 "does not have primary firmware\n", dev_info);
1318 }
1319
1320 if (first && (HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) {
1321 /* EvStat has Cmd bit set in some cases, so retry once if no
1322 * wait was needed */
1323 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
1324 printk(KERN_DEBUG "%s: init command completed too quickly - "
1325 "retrying\n", dev->name);
1326 first = 0;
1327 goto init;
1328 }
1329
1330 start = jiffies;
1331 delay = jiffies + HFA384X_INIT_TIMEOUT;
1332 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) &&
1333 time_before(jiffies, delay))
1334 yield();
1335 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) {
1336 printk(KERN_DEBUG "%s: assuming no Primary image in "
1337 "flash - card initialization not completed\n",
1338 dev_info);
1339 local->no_pri = 1;
1340 #ifdef PRISM2_DOWNLOAD_SUPPORT
1341 if (local->sram_type == -1)
1342 local->sram_type = prism2_get_ram_size(local);
1343 #endif /* PRISM2_DOWNLOAD_SUPPORT */
1344 return 1;
1345 }
1346 local->no_pri = 0;
1347 printk(KERN_DEBUG "prism2_hw_init: initialized in %lu ms\n",
1348 (jiffies - start) * 1000 / HZ);
1349 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
1350 return 0;
1351 }
1352
1353
1354 static int prism2_hw_init2(struct net_device *dev, int initial)
1355 {
1356 struct hostap_interface *iface;
1357 local_info_t *local;
1358 int i;
1359
1360 iface = netdev_priv(dev);
1361 local = iface->local;
1362
1363 #ifdef PRISM2_DOWNLOAD_SUPPORT
1364 kfree(local->pda);
1365 if (local->no_pri)
1366 local->pda = NULL;
1367 else
1368 local->pda = prism2_read_pda(dev);
1369 #endif /* PRISM2_DOWNLOAD_SUPPORT */
1370
1371 hfa384x_disable_interrupts(dev);
1372
1373 #ifndef final_version
1374 HFA384X_OUTW(HFA384X_MAGIC, HFA384X_SWSUPPORT0_OFF);
1375 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) {
1376 printk("SWSUPPORT0 write/read failed: %04X != %04X\n",
1377 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC);
1378 goto failed;
1379 }
1380 #endif
1381
1382 if (initial || local->pri_only) {
1383 hfa384x_events_only_cmd(dev);
1384 /* get card version information */
1385 if (prism2_get_version_info(dev, HFA384X_RID_NICID, "NIC") ||
1386 prism2_get_version_info(dev, HFA384X_RID_PRIID, "PRI")) {
1387 hfa384x_disable_interrupts(dev);
1388 goto failed;
1389 }
1390
1391 if (prism2_get_version_info(dev, HFA384X_RID_STAID, "STA")) {
1392 printk(KERN_DEBUG "%s: Failed to read STA f/w version "
1393 "- only Primary f/w present\n", dev->name);
1394 local->pri_only = 1;
1395 return 0;
1396 }
1397 local->pri_only = 0;
1398 hfa384x_disable_interrupts(dev);
1399 }
1400
1401 /* FIX: could convert allocate_fid to use sleeping CmdCompl wait and
1402 * enable interrupts before this. This would also require some sort of
1403 * sleeping AllocEv waiting */
1404
1405 /* allocate TX FIDs */
1406 local->txfid_len = PRISM2_TXFID_LEN;
1407 for (i = 0; i < PRISM2_TXFID_COUNT; i++) {
1408 local->txfid[i] = hfa384x_allocate_fid(dev, local->txfid_len);
1409 if (local->txfid[i] == 0xffff && local->txfid_len > 1600) {
1410 local->txfid[i] = hfa384x_allocate_fid(dev, 1600);
1411 if (local->txfid[i] != 0xffff) {
1412 printk(KERN_DEBUG "%s: Using shorter TX FID "
1413 "(1600 bytes)\n", dev->name);
1414 local->txfid_len = 1600;
1415 }
1416 }
1417 if (local->txfid[i] == 0xffff)
1418 goto failed;
1419 local->intransmitfid[i] = PRISM2_TXFID_EMPTY;
1420 }
1421
1422 hfa384x_events_only_cmd(dev);
1423
1424 if (initial) {
1425 struct list_head *ptr;
1426 prism2_check_sta_fw_version(local);
1427
1428 if (hfa384x_get_rid(dev, HFA384X_RID_CNFOWNMACADDR,
1429 &dev->dev_addr, 6, 1) < 0) {
1430 printk("%s: could not get own MAC address\n",
1431 dev->name);
1432 }
1433 list_for_each(ptr, &local->hostap_interfaces) {
1434 iface = list_entry(ptr, struct hostap_interface, list);
1435 memcpy(iface->dev->dev_addr, dev->dev_addr, ETH_ALEN);
1436 }
1437 } else if (local->fw_ap)
1438 prism2_check_sta_fw_version(local);
1439
1440 prism2_setup_rids(dev);
1441
1442 /* MAC is now configured, but port 0 is not yet enabled */
1443 return 0;
1444
1445 failed:
1446 if (!local->no_pri)
1447 printk(KERN_WARNING "%s: Initialization failed\n", dev_info);
1448 return 1;
1449 }
1450
1451
1452 static int prism2_hw_enable(struct net_device *dev, int initial)
1453 {
1454 struct hostap_interface *iface;
1455 local_info_t *local;
1456 int was_resetting;
1457
1458 iface = netdev_priv(dev);
1459 local = iface->local;
1460 was_resetting = local->hw_resetting;
1461
1462 if (hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, NULL, NULL)) {
1463 printk("%s: MAC port 0 enabling failed\n", dev->name);
1464 return 1;
1465 }
1466
1467 local->hw_ready = 1;
1468 local->hw_reset_tries = 0;
1469 local->hw_resetting = 0;
1470 hfa384x_enable_interrupts(dev);
1471
1472 /* at least D-Link DWL-650 seems to require additional port reset
1473 * before it starts acting as an AP, so reset port automatically
1474 * here just in case */
1475 if (initial && prism2_reset_port(dev)) {
1476 printk("%s: MAC port 0 reseting failed\n", dev->name);
1477 return 1;
1478 }
1479
1480 if (was_resetting && netif_queue_stopped(dev)) {
1481 /* If hw_reset() was called during pending transmit, netif
1482 * queue was stopped. Wake it up now since the wlan card has
1483 * been resetted. */
1484 netif_wake_queue(dev);
1485 }
1486
1487 return 0;
1488 }
1489
1490
1491 static int prism2_hw_config(struct net_device *dev, int initial)
1492 {
1493 struct hostap_interface *iface;
1494 local_info_t *local;
1495
1496 iface = netdev_priv(dev);
1497 local = iface->local;
1498
1499 if (local->hw_downloading)
1500 return 1;
1501
1502 if (prism2_hw_init(dev, initial)) {
1503 return local->no_pri ? 0 : 1;
1504 }
1505
1506 if (prism2_hw_init2(dev, initial))
1507 return 1;
1508
1509 /* Enable firmware if secondary image is loaded and at least one of the
1510 * netdevices is up. */
1511 if (!local->pri_only &&
1512 (initial == 0 || (initial == 2 && local->num_dev_open > 0))) {
1513 if (!local->dev_enabled)
1514 prism2_callback(local, PRISM2_CALLBACK_ENABLE);
1515 local->dev_enabled = 1;
1516 return prism2_hw_enable(dev, initial);
1517 }
1518
1519 return 0;
1520 }
1521
1522
1523 static void prism2_hw_shutdown(struct net_device *dev, int no_disable)
1524 {
1525 struct hostap_interface *iface;
1526 local_info_t *local;
1527
1528 iface = netdev_priv(dev);
1529 local = iface->local;
1530
1531 /* Allow only command completion events during disable */
1532 hfa384x_events_only_cmd(dev);
1533
1534 local->hw_ready = 0;
1535 if (local->dev_enabled)
1536 prism2_callback(local, PRISM2_CALLBACK_DISABLE);
1537 local->dev_enabled = 0;
1538
1539 if (local->func->card_present && !local->func->card_present(local)) {
1540 printk(KERN_DEBUG "%s: card already removed or not configured "
1541 "during shutdown\n", dev->name);
1542 return;
1543 }
1544
1545 if ((no_disable & HOSTAP_HW_NO_DISABLE) == 0 &&
1546 hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, NULL, NULL))
1547 printk(KERN_WARNING "%s: Shutdown failed\n", dev_info);
1548
1549 hfa384x_disable_interrupts(dev);
1550
1551 if (no_disable & HOSTAP_HW_ENABLE_CMDCOMPL)
1552 hfa384x_events_only_cmd(dev);
1553 else
1554 prism2_clear_cmd_queue(local);
1555 }
1556
1557
1558 static void prism2_hw_reset(struct net_device *dev)
1559 {
1560 struct hostap_interface *iface;
1561 local_info_t *local;
1562
1563 #if 0
1564 static long last_reset = 0;
1565
1566 /* do not reset card more than once per second to avoid ending up in a
1567 * busy loop reseting the card */
1568 if (time_before_eq(jiffies, last_reset + HZ))
1569 return;
1570 last_reset = jiffies;
1571 #endif
1572
1573 iface = netdev_priv(dev);
1574 local = iface->local;
1575
1576 if (in_interrupt()) {
1577 printk(KERN_DEBUG "%s: driver bug - prism2_hw_reset() called "
1578 "in interrupt context\n", dev->name);
1579 return;
1580 }
1581
1582 if (local->hw_downloading)
1583 return;
1584
1585 if (local->hw_resetting) {
1586 printk(KERN_WARNING "%s: %s: already resetting card - "
1587 "ignoring reset request\n", dev_info, dev->name);
1588 return;
1589 }
1590
1591 local->hw_reset_tries++;
1592 if (local->hw_reset_tries > 10) {
1593 printk(KERN_WARNING "%s: too many reset tries, skipping\n",
1594 dev->name);
1595 return;
1596 }
1597
1598 printk(KERN_WARNING "%s: %s: resetting card\n", dev_info, dev->name);
1599 hfa384x_disable_interrupts(dev);
1600 local->hw_resetting = 1;
1601 if (local->func->cor_sreset) {
1602 /* Host system seems to hang in some cases with high traffic
1603 * load or shared interrupts during COR sreset. Disable shared
1604 * interrupts during reset to avoid these crashes. COS sreset
1605 * takes quite a long time, so it is unfortunate that this
1606 * seems to be needed. Anyway, I do not know of any better way
1607 * of avoiding the crash. */
1608 disable_irq(dev->irq);
1609 local->func->cor_sreset(local);
1610 enable_irq(dev->irq);
1611 }
1612 prism2_hw_shutdown(dev, 1);
1613 prism2_hw_config(dev, 0);
1614 local->hw_resetting = 0;
1615
1616 #ifdef PRISM2_DOWNLOAD_SUPPORT
1617 if (local->dl_pri) {
1618 printk(KERN_DEBUG "%s: persistent download of primary "
1619 "firmware\n", dev->name);
1620 if (prism2_download_genesis(local, local->dl_pri) < 0)
1621 printk(KERN_WARNING "%s: download (PRI) failed\n",
1622 dev->name);
1623 }
1624
1625 if (local->dl_sec) {
1626 printk(KERN_DEBUG "%s: persistent download of secondary "
1627 "firmware\n", dev->name);
1628 if (prism2_download_volatile(local, local->dl_sec) < 0)
1629 printk(KERN_WARNING "%s: download (SEC) failed\n",
1630 dev->name);
1631 }
1632 #endif /* PRISM2_DOWNLOAD_SUPPORT */
1633
1634 /* TODO: restore beacon TIM bits for STAs that have buffered frames */
1635 }
1636
1637
1638 static void prism2_schedule_reset(local_info_t *local)
1639 {
1640 schedule_work(&local->reset_queue);
1641 }
1642
1643
1644 /* Called only as scheduled task after noticing card timeout in interrupt
1645 * context */
1646 static void handle_reset_queue(void *data)
1647 {
1648 local_info_t *local = (local_info_t *) data;
1649
1650 printk(KERN_DEBUG "%s: scheduled card reset\n", local->dev->name);
1651 prism2_hw_reset(local->dev);
1652
1653 if (netif_queue_stopped(local->dev)) {
1654 int i;
1655
1656 for (i = 0; i < PRISM2_TXFID_COUNT; i++)
1657 if (local->intransmitfid[i] == PRISM2_TXFID_EMPTY) {
1658 PDEBUG(DEBUG_EXTRA, "prism2_tx_timeout: "
1659 "wake up queue\n");
1660 netif_wake_queue(local->dev);
1661 break;
1662 }
1663 }
1664 }
1665
1666
1667 static int prism2_get_txfid_idx(local_info_t *local)
1668 {
1669 int idx, end;
1670 unsigned long flags;
1671
1672 spin_lock_irqsave(&local->txfidlock, flags);
1673 end = idx = local->next_txfid;
1674 do {
1675 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) {
1676 local->intransmitfid[idx] = PRISM2_TXFID_RESERVED;
1677 spin_unlock_irqrestore(&local->txfidlock, flags);
1678 return idx;
1679 }
1680 idx++;
1681 if (idx >= PRISM2_TXFID_COUNT)
1682 idx = 0;
1683 } while (idx != end);
1684 spin_unlock_irqrestore(&local->txfidlock, flags);
1685
1686 PDEBUG(DEBUG_EXTRA2, "prism2_get_txfid_idx: no room in txfid buf: "
1687 "packet dropped\n");
1688 local->stats.tx_dropped++;
1689
1690 return -1;
1691 }
1692
1693
1694 /* Called only from hardware IRQ */
1695 static void prism2_transmit_cb(struct net_device *dev, long context,
1696 u16 resp0, u16 res)
1697 {
1698 struct hostap_interface *iface;
1699 local_info_t *local;
1700 int idx = (int) context;
1701
1702 iface = netdev_priv(dev);
1703 local = iface->local;
1704
1705 if (res) {
1706 printk(KERN_DEBUG "%s: prism2_transmit_cb - res=0x%02x\n",
1707 dev->name, res);
1708 return;
1709 }
1710
1711 if (idx < 0 || idx >= PRISM2_TXFID_COUNT) {
1712 printk(KERN_DEBUG "%s: prism2_transmit_cb called with invalid "
1713 "idx=%d\n", dev->name, idx);
1714 return;
1715 }
1716
1717 if (!test_and_clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
1718 printk(KERN_DEBUG "%s: driver bug: prism2_transmit_cb called "
1719 "with no pending transmit\n", dev->name);
1720 }
1721
1722 if (netif_queue_stopped(dev)) {
1723 /* ready for next TX, so wake up queue that was stopped in
1724 * prism2_transmit() */
1725 netif_wake_queue(dev);
1726 }
1727
1728 spin_lock(&local->txfidlock);
1729
1730 /* With reclaim, Resp0 contains new txfid for transmit; the old txfid
1731 * will be automatically allocated for the next TX frame */
1732 local->intransmitfid[idx] = resp0;
1733
1734 PDEBUG(DEBUG_FID, "%s: prism2_transmit_cb: txfid[%d]=0x%04x, "
1735 "resp0=0x%04x, transmit_txfid=0x%04x\n",
1736 dev->name, idx, local->txfid[idx],
1737 resp0, local->intransmitfid[local->next_txfid]);
1738
1739 idx++;
1740 if (idx >= PRISM2_TXFID_COUNT)
1741 idx = 0;
1742 local->next_txfid = idx;
1743
1744 /* check if all TX buffers are occupied */
1745 do {
1746 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) {
1747 spin_unlock(&local->txfidlock);
1748 return;
1749 }
1750 idx++;
1751 if (idx >= PRISM2_TXFID_COUNT)
1752 idx = 0;
1753 } while (idx != local->next_txfid);
1754 spin_unlock(&local->txfidlock);
1755
1756 /* no empty TX buffers, stop queue */
1757 netif_stop_queue(dev);
1758 }
1759
1760
1761 /* Called only from software IRQ if PCI bus master is not used (with bus master
1762 * this can be called both from software and hardware IRQ) */
1763 static int prism2_transmit(struct net_device *dev, int idx)
1764 {
1765 struct hostap_interface *iface;
1766 local_info_t *local;
1767 int res;
1768
1769 iface = netdev_priv(dev);
1770 local = iface->local;
1771
1772 /* The driver tries to stop netif queue so that there would not be
1773 * more than one attempt to transmit frames going on; check that this
1774 * is really the case */
1775
1776 if (test_and_set_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
1777 printk(KERN_DEBUG "%s: driver bug - prism2_transmit() called "
1778 "when previous TX was pending\n", dev->name);
1779 return -1;
1780 }
1781
1782 /* stop the queue for the time that transmit is pending */
1783 netif_stop_queue(dev);
1784
1785 /* transmit packet */
1786 res = hfa384x_cmd_callback(
1787 dev,
1788 HFA384X_CMDCODE_TRANSMIT | HFA384X_CMD_TX_RECLAIM,
1789 local->txfid[idx],
1790 prism2_transmit_cb, (long) idx);
1791
1792 if (res) {
1793 struct net_device_stats *stats;
1794 printk(KERN_DEBUG "%s: prism2_transmit: CMDCODE_TRANSMIT "
1795 "failed (res=%d)\n", dev->name, res);
1796 stats = hostap_get_stats(dev);
1797 stats->tx_dropped++;
1798 netif_wake_queue(dev);
1799 return -1;
1800 }
1801 dev->trans_start = jiffies;
1802
1803 /* Since we did not wait for command completion, the card continues
1804 * to process on the background and we will finish handling when
1805 * command completion event is handled (prism2_cmd_ev() function) */
1806
1807 return 0;
1808 }
1809
1810
1811 /* Send IEEE 802.11 frame (convert the header into Prism2 TX descriptor and
1812 * send the payload with this descriptor) */
1813 /* Called only from software IRQ */
1814 static int prism2_tx_80211(struct sk_buff *skb, struct net_device *dev)
1815 {
1816 struct hostap_interface *iface;
1817 local_info_t *local;
1818 struct hfa384x_tx_frame txdesc;
1819 struct hostap_skb_tx_data *meta;
1820 int hdr_len, data_len, idx, res, ret = -1;
1821 u16 tx_control, fc;
1822
1823 iface = netdev_priv(dev);
1824 local = iface->local;
1825
1826 meta = (struct hostap_skb_tx_data *) skb->cb;
1827
1828 prism2_callback(local, PRISM2_CALLBACK_TX_START);
1829
1830 if ((local->func->card_present && !local->func->card_present(local)) ||
1831 !local->hw_ready || local->hw_downloading || local->pri_only) {
1832 if (net_ratelimit()) {
1833 printk(KERN_DEBUG "%s: prism2_tx_80211: hw not ready -"
1834 " skipping\n", dev->name);
1835 }
1836 goto fail;
1837 }
1838
1839 memset(&txdesc, 0, sizeof(txdesc));
1840
1841 /* skb->data starts with txdesc->frame_control */
1842 hdr_len = 24;
1843 memcpy(&txdesc.frame_control, skb->data, hdr_len);
1844 fc = le16_to_cpu(txdesc.frame_control);
1845 if (WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA &&
1846 (fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS) &&
1847 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
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
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;
2022 }
2023
2024 skb_queue_tail(&local->rx_list, skb);
2025 tasklet_schedule(&local->rx_tasklet);
2026
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,
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,
2402 fc & IEEE80211_FCTL_TODS ? " ToDS" : "",
2403 fc & IEEE80211_FCTL_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
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,
2544 HFA384X_INFO_COMMTALLIES, NULL, 0);
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
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;
2798 struct ieee80211_crypt_data *entry;
2799
2800 for (ptr = local->crypt_deinit_list.next, n = ptr->next;
2801 ptr != &local->crypt_deinit_list; ptr = n, n = ptr->next) {
2802 entry = list_entry(ptr, struct ieee80211_crypt_data, list);
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),
2887 channel, NULL, 0))
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,
2920 HFA384X_INFO_COMMTALLIES, NULL, 0);
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 *
3100 prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx,
3101 struct device *sdev)
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
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;
3199 local->scan_channel_mask = 0xffff;
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");
3260 SET_NETDEV_DEV(dev, sdev);
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:
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 /* Unregister all netdevs before freeing local data. */
3325 list_for_each_safe(ptr, n, &local->hostap_interfaces) {
3326 iface = list_entry(ptr, struct hostap_interface, list);
3327 if (iface->type == HOSTAP_INTERFACE_MASTER) {
3328 /* special handling for this interface below */
3329 continue;
3330 }
3331 hostap_remove_interface(iface->dev, 0, 1);
3332 }
3333
3334 unregister_netdev(local->dev);
3335
3336 flush_scheduled_work();
3337
3338 if (timer_pending(&local->crypt_deinit_timer))
3339 del_timer(&local->crypt_deinit_timer);
3340 prism2_crypt_deinit_entries(local, 1);
3341
3342 if (timer_pending(&local->passive_scan_timer))
3343 del_timer(&local->passive_scan_timer);
3344
3345 if (timer_pending(&local->tick_timer))
3346 del_timer(&local->tick_timer);
3347
3348 prism2_clear_cmd_queue(local);
3349
3350 skb_queue_purge(&local->info_list);
3351 skb_queue_purge(&local->rx_list);
3352 skb_queue_purge(&local->sta_tx_exc_list);
3353
3354 if (local->dev_enabled)
3355 prism2_callback(local, PRISM2_CALLBACK_DISABLE);
3356
3357 for (i = 0; i < WEP_KEYS; i++) {
3358 struct ieee80211_crypt_data *crypt = local->crypt[i];
3359 if (crypt) {
3360 if (crypt->ops)
3361 crypt->ops->deinit(crypt->priv);
3362 kfree(crypt);
3363 local->crypt[i] = NULL;
3364 }
3365 }
3366
3367 if (local->ap != NULL)
3368 hostap_free_data(local->ap);
3369
3370 #ifndef PRISM2_NO_PROCFS_DEBUG
3371 if (local->proc != NULL)
3372 remove_proc_entry("registers", local->proc);
3373 #endif /* PRISM2_NO_PROCFS_DEBUG */
3374 hostap_remove_proc(local);
3375
3376 tx_cb = local->tx_callback;
3377 while (tx_cb != NULL) {
3378 tx_cb_prev = tx_cb;
3379 tx_cb = tx_cb->next;
3380 kfree(tx_cb_prev);
3381 }
3382
3383 hostap_set_hostapd(local, 0, 0);
3384 hostap_set_hostapd_sta(local, 0, 0);
3385
3386 for (i = 0; i < PRISM2_FRAG_CACHE_LEN; i++) {
3387 if (local->frag_cache[i].skb != NULL)
3388 dev_kfree_skb(local->frag_cache[i].skb);
3389 }
3390
3391 #ifdef PRISM2_DOWNLOAD_SUPPORT
3392 prism2_download_free_data(local->dl_pri);
3393 prism2_download_free_data(local->dl_sec);
3394 #endif /* PRISM2_DOWNLOAD_SUPPORT */
3395
3396 prism2_clear_set_tim_queue(local);
3397
3398 list_for_each_safe(ptr, n, &local->bss_list) {
3399 struct hostap_bss_info *bss =
3400 list_entry(ptr, struct hostap_bss_info, list);
3401 kfree(bss);
3402 }
3403
3404 kfree(local->pda);
3405 kfree(local->last_scan_results);
3406 kfree(local->generic_elem);
3407
3408 free_netdev(local->dev);
3409 }
3410
3411
3412 #ifndef PRISM2_PLX
3413 static void prism2_suspend(struct net_device *dev)
3414 {
3415 struct hostap_interface *iface;
3416 struct local_info *local;
3417 union iwreq_data wrqu;
3418
3419 iface = dev->priv;
3420 local = iface->local;
3421
3422 /* Send disconnect event, e.g., to trigger reassociation after resume
3423 * if wpa_supplicant is used. */
3424 memset(&wrqu, 0, sizeof(wrqu));
3425 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3426 wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL);
3427
3428 /* Disable hardware and firmware */
3429 prism2_hw_shutdown(dev, 0);
3430 }
3431 #endif /* PRISM2_PLX */
3432
3433
3434 /* These might at some point be compiled separately and used as separate
3435 * kernel modules or linked into one */
3436 #ifdef PRISM2_DOWNLOAD_SUPPORT
3437 #include "hostap_download.c"
3438 #endif /* PRISM2_DOWNLOAD_SUPPORT */
3439
3440 #ifdef PRISM2_CALLBACK
3441 /* External hostap_callback.c file can be used to, e.g., blink activity led.
3442 * This can use platform specific code and must define prism2_callback()
3443 * function (if PRISM2_CALLBACK is not defined, these function calls are not
3444 * used. */
3445 #include "hostap_callback.c"
3446 #endif /* PRISM2_CALLBACK */
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