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