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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / net / wireless / hostap / hostap_hw.c
blob0c948ab59e6d74863e4c32f51ce03373dd48a7cd
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 * <j@w1.fi>
7 * Copyright (c) 2002-2005, Jouni Malinen <j@w1.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
34 #include <asm/delay.h>
35 #include <asm/uaccess.h>
36
37 #include <linux/slab.h>
38 #include <linux/netdevice.h>
39 #include <linux/etherdevice.h>
40 #include <linux/proc_fs.h>
41 #include <linux/if_arp.h>
42 #include <linux/delay.h>
43 #include <linux/random.h>
44 #include <linux/wait.h>
45 #include <linux/sched.h>
46 #include <linux/rtnetlink.h>
47 #include <linux/wireless.h>
48 #include <net/iw_handler.h>
49 #include <net/lib80211.h>
50 #include <asm/irq.h>
51
52 #include "hostap_80211.h"
53 #include "hostap.h"
54 #include "hostap_ap.h"
55
56
57 /* #define final_version */
58
59 static int mtu = 1500;
60 module_param(mtu, int, 0444);
61 MODULE_PARM_DESC(mtu, "Maximum transfer unit");
62
63 static int channel[MAX_PARM_DEVICES] = { 3, DEF_INTS };
64 module_param_array(channel, int, NULL, 0444);
65 MODULE_PARM_DESC(channel, "Initial channel");
66
67 static char essid[33] = "test";
68 module_param_string(essid, essid, sizeof(essid), 0444);
69 MODULE_PARM_DESC(essid, "Host AP's ESSID");
70
71 static int iw_mode[MAX_PARM_DEVICES] = { IW_MODE_MASTER, DEF_INTS };
72 module_param_array(iw_mode, int, NULL, 0444);
73 MODULE_PARM_DESC(iw_mode, "Initial operation mode");
74
75 static int beacon_int[MAX_PARM_DEVICES] = { 100, DEF_INTS };
76 module_param_array(beacon_int, int, NULL, 0444);
77 MODULE_PARM_DESC(beacon_int, "Beacon interval (1 = 1024 usec)");
78
79 static int dtim_period[MAX_PARM_DEVICES] = { 1, DEF_INTS };
80 module_param_array(dtim_period, int, NULL, 0444);
81 MODULE_PARM_DESC(dtim_period, "DTIM period");
82
83 static char dev_template[16] = "wlan%d";
84 module_param_string(dev_template, dev_template, sizeof(dev_template), 0444);
85 MODULE_PARM_DESC(dev_template, "Prefix for network device name (default: "
86 "wlan%d)");
87
88 #ifdef final_version
89 #define EXTRA_EVENTS_WTERR 0
90 #else
91 /* check WTERR events (Wait Time-out) in development versions */
92 #define EXTRA_EVENTS_WTERR HFA384X_EV_WTERR
93 #endif
94
95 /* Events that will be using BAP0 */
96 #define HFA384X_BAP0_EVENTS \
97 (HFA384X_EV_TXEXC | HFA384X_EV_RX | HFA384X_EV_INFO | HFA384X_EV_TX)
98
99 /* event mask, i.e., events that will result in an interrupt */
100 #define HFA384X_EVENT_MASK \
101 (HFA384X_BAP0_EVENTS | HFA384X_EV_ALLOC | HFA384X_EV_INFDROP | \
102 HFA384X_EV_CMD | HFA384X_EV_TICK | \
103 EXTRA_EVENTS_WTERR)
104
105 /* Default TX control flags: use 802.11 headers and request interrupt for
106 * failed transmits. Frames that request ACK callback, will add
107 * _TX_OK flag and _ALT_RTRY flag may be used to select different retry policy.
108 */
109 #define HFA384X_TX_CTRL_FLAGS \
110 (HFA384X_TX_CTRL_802_11 | HFA384X_TX_CTRL_TX_EX)
111
112
113 /* ca. 1 usec */
114 #define HFA384X_CMD_BUSY_TIMEOUT 5000
115 #define HFA384X_BAP_BUSY_TIMEOUT 50000
116
117 /* ca. 10 usec */
118 #define HFA384X_CMD_COMPL_TIMEOUT 20000
119 #define HFA384X_DL_COMPL_TIMEOUT 1000000
120
121 /* Wait times for initialization; yield to other processes to avoid busy
122 * waiting for long time. */
123 #define HFA384X_INIT_TIMEOUT (HZ / 2) /* 500 ms */
124 #define HFA384X_ALLOC_COMPL_TIMEOUT (HZ / 20) /* 50 ms */
125
126
127 static void prism2_hw_reset(struct net_device *dev);
128 static void prism2_check_sta_fw_version(local_info_t *local);
129
130 #ifdef PRISM2_DOWNLOAD_SUPPORT
131 /* hostap_download.c */
132 static int prism2_download_aux_dump(struct net_device *dev,
133 unsigned int addr, int len, u8 *buf);
134 static u8 * prism2_read_pda(struct net_device *dev);
135 static int prism2_download(local_info_t *local,
136 struct prism2_download_param *param);
137 static void prism2_download_free_data(struct prism2_download_data *dl);
138 static int prism2_download_volatile(local_info_t *local,
139 struct prism2_download_data *param);
140 static int prism2_download_genesis(local_info_t *local,
141 struct prism2_download_data *param);
142 static int prism2_get_ram_size(local_info_t *local);
143 #endif /* PRISM2_DOWNLOAD_SUPPORT */
144
145
146
147
148 #ifndef final_version
149 /* magic value written to SWSUPPORT0 reg. for detecting whether card is still
150 * present */
151 #define HFA384X_MAGIC 0x8A32
152 #endif
153
154
155 static u16 hfa384x_read_reg(struct net_device *dev, u16 reg)
156 {
157 return HFA384X_INW(reg);
158 }
159
160
161 static void hfa384x_read_regs(struct net_device *dev,
162 struct hfa384x_regs *regs)
163 {
164 regs->cmd = HFA384X_INW(HFA384X_CMD_OFF);
165 regs->evstat = HFA384X_INW(HFA384X_EVSTAT_OFF);
166 regs->offset0 = HFA384X_INW(HFA384X_OFFSET0_OFF);
167 regs->offset1 = HFA384X_INW(HFA384X_OFFSET1_OFF);
168 regs->swsupport0 = HFA384X_INW(HFA384X_SWSUPPORT0_OFF);
169 }
170
171
172 /**
173 * __hostap_cmd_queue_free - Free Prism2 command queue entry (private)
174 * @local: pointer to private Host AP driver data
175 * @entry: Prism2 command queue entry to be freed
176 * @del_req: request the entry to be removed
177 *
178 * Internal helper function for freeing Prism2 command queue entries.
179 * Caller must have acquired local->cmdlock before calling this function.
180 */
181 static inline void __hostap_cmd_queue_free(local_info_t *local,
182 struct hostap_cmd_queue *entry,
183 int del_req)
184 {
185 if (del_req) {
186 entry->del_req = 1;
187 if (!list_empty(&entry->list)) {
188 list_del_init(&entry->list);
189 local->cmd_queue_len--;
190 }
191 }
192
193 if (atomic_dec_and_test(&entry->usecnt) && entry->del_req)
194 kfree(entry);
195 }
196
197
198 /**
199 * hostap_cmd_queue_free - Free Prism2 command queue entry
200 * @local: pointer to private Host AP driver data
201 * @entry: Prism2 command queue entry to be freed
202 * @del_req: request the entry to be removed
203 *
204 * Free a Prism2 command queue entry.
205 */
206 static inline void hostap_cmd_queue_free(local_info_t *local,
207 struct hostap_cmd_queue *entry,
208 int del_req)
209 {
210 unsigned long flags;
211
212 spin_lock_irqsave(&local->cmdlock, flags);
213 __hostap_cmd_queue_free(local, entry, del_req);
214 spin_unlock_irqrestore(&local->cmdlock, flags);
215 }
216
217
218 /**
219 * prism2_clear_cmd_queue - Free all pending Prism2 command queue entries
220 * @local: pointer to private Host AP driver data
221 */
222 static void prism2_clear_cmd_queue(local_info_t *local)
223 {
224 struct list_head *ptr, *n;
225 unsigned long flags;
226 struct hostap_cmd_queue *entry;
227
228 spin_lock_irqsave(&local->cmdlock, flags);
229 list_for_each_safe(ptr, n, &local->cmd_queue) {
230 entry = list_entry(ptr, struct hostap_cmd_queue, list);
231 atomic_inc(&entry->usecnt);
232 printk(KERN_DEBUG "%s: removed pending cmd_queue entry "
233 "(type=%d, cmd=0x%04x, param0=0x%04x)\n",
234 local->dev->name, entry->type, entry->cmd,
235 entry->param0);
236 __hostap_cmd_queue_free(local, entry, 1);
237 }
238 if (local->cmd_queue_len) {
239 /* This should not happen; print debug message and clear
240 * queue length. */
241 printk(KERN_DEBUG "%s: cmd_queue_len (%d) not zero after "
242 "flush\n", local->dev->name, local->cmd_queue_len);
243 local->cmd_queue_len = 0;
244 }
245 spin_unlock_irqrestore(&local->cmdlock, flags);
246 }
247
248
249 /**
250 * hfa384x_cmd_issue - Issue a Prism2 command to the hardware
251 * @dev: pointer to net_device
252 * @entry: Prism2 command queue entry to be issued
253 */
254 static int hfa384x_cmd_issue(struct net_device *dev,
255 struct hostap_cmd_queue *entry)
256 {
257 struct hostap_interface *iface;
258 local_info_t *local;
259 int tries;
260 u16 reg;
261 unsigned long flags;
262
263 iface = netdev_priv(dev);
264 local = iface->local;
265
266 if (local->func->card_present && !local->func->card_present(local))
267 return -ENODEV;
268
269 if (entry->issued) {
270 printk(KERN_DEBUG "%s: driver bug - re-issuing command @%p\n",
271 dev->name, entry);
272 }
273
274 /* wait until busy bit is clear; this should always be clear since the
275 * commands are serialized */
276 tries = HFA384X_CMD_BUSY_TIMEOUT;
277 while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) {
278 tries--;
279 udelay(1);
280 }
281 #ifndef final_version
282 if (tries != HFA384X_CMD_BUSY_TIMEOUT) {
283 prism2_io_debug_error(dev, 1);
284 printk(KERN_DEBUG "%s: hfa384x_cmd_issue: cmd reg was busy "
285 "for %d usec\n", dev->name,
286 HFA384X_CMD_BUSY_TIMEOUT - tries);
287 }
288 #endif
289 if (tries == 0) {
290 reg = HFA384X_INW(HFA384X_CMD_OFF);
291 prism2_io_debug_error(dev, 2);
292 printk(KERN_DEBUG "%s: hfa384x_cmd_issue - timeout - "
293 "reg=0x%04x\n", dev->name, reg);
294 return -ETIMEDOUT;
295 }
296
297 /* write command */
298 spin_lock_irqsave(&local->cmdlock, flags);
299 HFA384X_OUTW(entry->param0, HFA384X_PARAM0_OFF);
300 HFA384X_OUTW(entry->param1, HFA384X_PARAM1_OFF);
301 HFA384X_OUTW(entry->cmd, HFA384X_CMD_OFF);
302 entry->issued = 1;
303 spin_unlock_irqrestore(&local->cmdlock, flags);
304
305 return 0;
306 }
307
308
309 /**
310 * hfa384x_cmd - Issue a Prism2 command and wait (sleep) for completion
311 * @dev: pointer to net_device
312 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
313 * @param0: value for Param0 register
314 * @param1: value for Param1 register (pointer; %NULL if not used)
315 * @resp0: pointer for Resp0 data or %NULL if Resp0 is not needed
316 *
317 * Issue given command (possibly after waiting in command queue) and sleep
318 * until the command is completed (or timed out or interrupted). This can be
319 * called only from user process context.
320 */
321 static int hfa384x_cmd(struct net_device *dev, u16 cmd, u16 param0,
322 u16 *param1, u16 *resp0)
323 {
324 struct hostap_interface *iface;
325 local_info_t *local;
326 int err, res, issue, issued = 0;
327 unsigned long flags;
328 struct hostap_cmd_queue *entry;
329 DECLARE_WAITQUEUE(wait, current);
330
331 iface = netdev_priv(dev);
332 local = iface->local;
333
334 if (in_interrupt()) {
335 printk(KERN_DEBUG "%s: hfa384x_cmd called from interrupt "
336 "context\n", dev->name);
337 return -1;
338 }
339
340 if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN) {
341 printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n",
342 dev->name);
343 return -1;
344 }
345
346 if (signal_pending(current))
347 return -EINTR;
348
349 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
350 if (entry == NULL) {
351 printk(KERN_DEBUG "%s: hfa384x_cmd - kmalloc failed\n",
352 dev->name);
353 return -ENOMEM;
354 }
355 atomic_set(&entry->usecnt, 1);
356 entry->type = CMD_SLEEP;
357 entry->cmd = cmd;
358 entry->param0 = param0;
359 if (param1)
360 entry->param1 = *param1;
361 init_waitqueue_head(&entry->compl);
362
363 /* prepare to wait for command completion event, but do not sleep yet
364 */
365 add_wait_queue(&entry->compl, &wait);
366 set_current_state(TASK_INTERRUPTIBLE);
367
368 spin_lock_irqsave(&local->cmdlock, flags);
369 issue = list_empty(&local->cmd_queue);
370 if (issue)
371 entry->issuing = 1;
372 list_add_tail(&entry->list, &local->cmd_queue);
373 local->cmd_queue_len++;
374 spin_unlock_irqrestore(&local->cmdlock, flags);
375
376 err = 0;
377 if (!issue)
378 goto wait_completion;
379
380 if (signal_pending(current))
381 err = -EINTR;
382
383 if (!err) {
384 if (hfa384x_cmd_issue(dev, entry))
385 err = -ETIMEDOUT;
386 else
387 issued = 1;
388 }
389
390 wait_completion:
391 if (!err && entry->type != CMD_COMPLETED) {
392 /* sleep until command is completed or timed out */
393 res = schedule_timeout(2 * HZ);
394 } else
395 res = -1;
396
397 if (!err && signal_pending(current))
398 err = -EINTR;
399
400 if (err && issued) {
401 /* the command was issued, so a CmdCompl event should occur
402 * soon; however, there's a pending signal and
403 * schedule_timeout() would be interrupted; wait a short period
404 * of time to avoid removing entry from the list before
405 * CmdCompl event */
406 udelay(300);
407 }
408
409 set_current_state(TASK_RUNNING);
410 remove_wait_queue(&entry->compl, &wait);
411
412 /* If entry->list is still in the list, it must be removed
413 * first and in this case prism2_cmd_ev() does not yet have
414 * local reference to it, and the data can be kfree()'d
415 * here. If the command completion event is still generated,
416 * it will be assigned to next (possibly) pending command, but
417 * the driver will reset the card anyway due to timeout
418 *
419 * If the entry is not in the list prism2_cmd_ev() has a local
420 * reference to it, but keeps cmdlock as long as the data is
421 * needed, so the data can be kfree()'d here. */
422
423 /* FIX: if the entry->list is in the list, it has not been completed
424 * yet, so removing it here is somewhat wrong.. this could cause
425 * references to freed memory and next list_del() causing NULL pointer
426 * dereference.. it would probably be better to leave the entry in the
427 * list and the list should be emptied during hw reset */
428
429 spin_lock_irqsave(&local->cmdlock, flags);
430 if (!list_empty(&entry->list)) {
431 printk(KERN_DEBUG "%s: hfa384x_cmd: entry still in list? "
432 "(entry=%p, type=%d, res=%d)\n", dev->name, entry,
433 entry->type, res);
434 list_del_init(&entry->list);
435 local->cmd_queue_len--;
436 }
437 spin_unlock_irqrestore(&local->cmdlock, flags);
438
439 if (err) {
440 printk(KERN_DEBUG "%s: hfa384x_cmd: interrupted; err=%d\n",
441 dev->name, err);
442 res = err;
443 goto done;
444 }
445
446 if (entry->type != CMD_COMPLETED) {
447 u16 reg = HFA384X_INW(HFA384X_EVSTAT_OFF);
448 printk(KERN_DEBUG "%s: hfa384x_cmd: command was not "
449 "completed (res=%d, entry=%p, type=%d, cmd=0x%04x, "
450 "param0=0x%04x, EVSTAT=%04x INTEN=%04x)\n", dev->name,
451 res, entry, entry->type, entry->cmd, entry->param0, reg,
452 HFA384X_INW(HFA384X_INTEN_OFF));
453 if (reg & HFA384X_EV_CMD) {
454 /* Command completion event is pending, but the
455 * interrupt was not delivered - probably an issue
456 * with pcmcia-cs configuration. */
457 printk(KERN_WARNING "%s: interrupt delivery does not "
458 "seem to work\n", dev->name);
459 }
460 prism2_io_debug_error(dev, 3);
461 res = -ETIMEDOUT;
462 goto done;
463 }
464
465 if (resp0 != NULL)
466 *resp0 = entry->resp0;
467 #ifndef final_version
468 if (entry->res) {
469 printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x, "
470 "resp0=0x%04x\n",
471 dev->name, cmd, entry->res, entry->resp0);
472 }
473 #endif /* final_version */
474
475 res = entry->res;
476 done:
477 hostap_cmd_queue_free(local, entry, 1);
478 return res;
479 }
480
481
482 /**
483 * hfa384x_cmd_callback - Issue a Prism2 command; callback when completed
484 * @dev: pointer to net_device
485 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
486 * @param0: value for Param0 register
487 * @callback: command completion callback function (%NULL = no callback)
488 * @context: context data to be given to the callback function
489 *
490 * Issue given command (possibly after waiting in command queue) and use
491 * callback function to indicate command completion. This can be called both
492 * from user and interrupt context. The callback function will be called in
493 * hardware IRQ context. It can be %NULL, when no function is called when
494 * command is completed.
495 */
496 static int hfa384x_cmd_callback(struct net_device *dev, u16 cmd, u16 param0,
497 void (*callback)(struct net_device *dev,
498 long context, u16 resp0,
499 u16 status),
500 long context)
501 {
502 struct hostap_interface *iface;
503 local_info_t *local;
504 int issue, ret;
505 unsigned long flags;
506 struct hostap_cmd_queue *entry;
507
508 iface = netdev_priv(dev);
509 local = iface->local;
510
511 if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN + 2) {
512 printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n",
513 dev->name);
514 return -1;
515 }
516
517 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
518 if (entry == NULL) {
519 printk(KERN_DEBUG "%s: hfa384x_cmd_callback - kmalloc "
520 "failed\n", dev->name);
521 return -ENOMEM;
522 }
523 atomic_set(&entry->usecnt, 1);
524 entry->type = CMD_CALLBACK;
525 entry->cmd = cmd;
526 entry->param0 = param0;
527 entry->callback = callback;
528 entry->context = context;
529
530 spin_lock_irqsave(&local->cmdlock, flags);
531 issue = list_empty(&local->cmd_queue);
532 if (issue)
533 entry->issuing = 1;
534 list_add_tail(&entry->list, &local->cmd_queue);
535 local->cmd_queue_len++;
536 spin_unlock_irqrestore(&local->cmdlock, flags);
537
538 if (issue && hfa384x_cmd_issue(dev, entry))
539 ret = -ETIMEDOUT;
540 else
541 ret = 0;
542
543 hostap_cmd_queue_free(local, entry, ret);
544
545 return ret;
546 }
547
548
549 /**
550 * __hfa384x_cmd_no_wait - Issue a Prism2 command (private)
551 * @dev: pointer to net_device
552 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
553 * @param0: value for Param0 register
554 * @io_debug_num: I/O debug error number
555 *
556 * Shared helper function for hfa384x_cmd_wait() and hfa384x_cmd_no_wait().
557 */
558 static int __hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, u16 param0,
559 int io_debug_num)
560 {
561 int tries;
562 u16 reg;
563
564 /* wait until busy bit is clear; this should always be clear since the
565 * commands are serialized */
566 tries = HFA384X_CMD_BUSY_TIMEOUT;
567 while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) {
568 tries--;
569 udelay(1);
570 }
571 if (tries == 0) {
572 reg = HFA384X_INW(HFA384X_CMD_OFF);
573 prism2_io_debug_error(dev, io_debug_num);
574 printk(KERN_DEBUG "%s: __hfa384x_cmd_no_wait(%d) - timeout - "
575 "reg=0x%04x\n", dev->name, io_debug_num, reg);
576 return -ETIMEDOUT;
577 }
578
579 /* write command */
580 HFA384X_OUTW(param0, HFA384X_PARAM0_OFF);
581 HFA384X_OUTW(cmd, HFA384X_CMD_OFF);
582
583 return 0;
584 }
585
586
587 /**
588 * hfa384x_cmd_wait - Issue a Prism2 command and busy wait for completion
589 * @dev: pointer to net_device
590 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
591 * @param0: value for Param0 register
592 */
593 static int hfa384x_cmd_wait(struct net_device *dev, u16 cmd, u16 param0)
594 {
595 int res, tries;
596 u16 reg;
597
598 res = __hfa384x_cmd_no_wait(dev, cmd, param0, 4);
599 if (res)
600 return res;
601
602 /* wait for command completion */
603 if ((cmd & HFA384X_CMDCODE_MASK) == HFA384X_CMDCODE_DOWNLOAD)
604 tries = HFA384X_DL_COMPL_TIMEOUT;
605 else
606 tries = HFA384X_CMD_COMPL_TIMEOUT;
607
608 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) &&
609 tries > 0) {
610 tries--;
611 udelay(10);
612 }
613 if (tries == 0) {
614 reg = HFA384X_INW(HFA384X_EVSTAT_OFF);
615 prism2_io_debug_error(dev, 5);
616 printk(KERN_DEBUG "%s: hfa384x_cmd_wait - timeout2 - "
617 "reg=0x%04x\n", dev->name, reg);
618 return -ETIMEDOUT;
619 }
620
621 res = (HFA384X_INW(HFA384X_STATUS_OFF) &
622 (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | BIT(9) |
623 BIT(8))) >> 8;
624 #ifndef final_version
625 if (res) {
626 printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x\n",
627 dev->name, cmd, res);
628 }
629 #endif
630
631 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
632
633 return res;
634 }
635
636
637 /**
638 * hfa384x_cmd_no_wait - Issue a Prism2 command; do not wait for completion
639 * @dev: pointer to net_device
640 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
641 * @param0: value for Param0 register
642 */
643 static inline int hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd,
644 u16 param0)
645 {
646 return __hfa384x_cmd_no_wait(dev, cmd, param0, 6);
647 }
648
649
650 /**
651 * prism2_cmd_ev - Prism2 command completion event handler
652 * @dev: pointer to net_device
653 *
654 * Interrupt handler for command completion events. Called by the main
655 * interrupt handler in hardware IRQ context. Read Resp0 and status registers
656 * from the hardware and ACK the event. Depending on the issued command type
657 * either wake up the sleeping process that is waiting for command completion
658 * or call the callback function. Issue the next command, if one is pending.
659 */
660 static void prism2_cmd_ev(struct net_device *dev)
661 {
662 struct hostap_interface *iface;
663 local_info_t *local;
664 struct hostap_cmd_queue *entry = NULL;
665
666 iface = netdev_priv(dev);
667 local = iface->local;
668
669 spin_lock(&local->cmdlock);
670 if (!list_empty(&local->cmd_queue)) {
671 entry = list_entry(local->cmd_queue.next,
672 struct hostap_cmd_queue, list);
673 atomic_inc(&entry->usecnt);
674 list_del_init(&entry->list);
675 local->cmd_queue_len--;
676
677 if (!entry->issued) {
678 printk(KERN_DEBUG "%s: Command completion event, but "
679 "cmd not issued\n", dev->name);
680 __hostap_cmd_queue_free(local, entry, 1);
681 entry = NULL;
682 }
683 }
684 spin_unlock(&local->cmdlock);
685
686 if (!entry) {
687 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
688 printk(KERN_DEBUG "%s: Command completion event, but no "
689 "pending commands\n", dev->name);
690 return;
691 }
692
693 entry->resp0 = HFA384X_INW(HFA384X_RESP0_OFF);
694 entry->res = (HFA384X_INW(HFA384X_STATUS_OFF) &
695 (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) |
696 BIT(9) | BIT(8))) >> 8;
697 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
698
699 /* TODO: rest of the CmdEv handling could be moved to tasklet */
700 if (entry->type == CMD_SLEEP) {
701 entry->type = CMD_COMPLETED;
702 wake_up_interruptible(&entry->compl);
703 } else if (entry->type == CMD_CALLBACK) {
704 if (entry->callback)
705 entry->callback(dev, entry->context, entry->resp0,
706 entry->res);
707 } else {
708 printk(KERN_DEBUG "%s: Invalid command completion type %d\n",
709 dev->name, entry->type);
710 }
711 hostap_cmd_queue_free(local, entry, 1);
712
713 /* issue next command, if pending */
714 entry = NULL;
715 spin_lock(&local->cmdlock);
716 if (!list_empty(&local->cmd_queue)) {
717 entry = list_entry(local->cmd_queue.next,
718 struct hostap_cmd_queue, list);
719 if (entry->issuing) {
720 /* hfa384x_cmd() has already started issuing this
721 * command, so do not start here */
722 entry = NULL;
723 }
724 if (entry)
725 atomic_inc(&entry->usecnt);
726 }
727 spin_unlock(&local->cmdlock);
728
729 if (entry) {
730 /* issue next command; if command issuing fails, remove the
731 * entry from cmd_queue */
732 int res = hfa384x_cmd_issue(dev, entry);
733 spin_lock(&local->cmdlock);
734 __hostap_cmd_queue_free(local, entry, res);
735 spin_unlock(&local->cmdlock);
736 }
737 }
738
739
740 static int hfa384x_wait_offset(struct net_device *dev, u16 o_off)
741 {
742 int tries = HFA384X_BAP_BUSY_TIMEOUT;
743 int res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY;
744
745 while (res && tries > 0) {
746 tries--;
747 udelay(1);
748 res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY;
749 }
750 return res;
751 }
752
753
754 /* Offset must be even */
755 static int hfa384x_setup_bap(struct net_device *dev, u16 bap, u16 id,
756 int offset)
757 {
758 u16 o_off, s_off;
759 int ret = 0;
760
761 if (offset % 2 || bap > 1)
762 return -EINVAL;
763
764 if (bap == BAP1) {
765 o_off = HFA384X_OFFSET1_OFF;
766 s_off = HFA384X_SELECT1_OFF;
767 } else {
768 o_off = HFA384X_OFFSET0_OFF;
769 s_off = HFA384X_SELECT0_OFF;
770 }
771
772 if (hfa384x_wait_offset(dev, o_off)) {
773 prism2_io_debug_error(dev, 7);
774 printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout before\n",
775 dev->name);
776 ret = -ETIMEDOUT;
777 goto out;
778 }
779
780 HFA384X_OUTW(id, s_off);
781 HFA384X_OUTW(offset, o_off);
782
783 if (hfa384x_wait_offset(dev, o_off)) {
784 prism2_io_debug_error(dev, 8);
785 printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout after\n",
786 dev->name);
787 ret = -ETIMEDOUT;
788 goto out;
789 }
790 #ifndef final_version
791 if (HFA384X_INW(o_off) & HFA384X_OFFSET_ERR) {
792 prism2_io_debug_error(dev, 9);
793 printk(KERN_DEBUG "%s: hfa384x_setup_bap - offset error "
794 "(%d,0x04%x,%d); reg=0x%04x\n",
795 dev->name, bap, id, offset, HFA384X_INW(o_off));
796 ret = -EINVAL;
797 }
798 #endif
799
800 out:
801 return ret;
802 }
803
804
805 static int hfa384x_get_rid(struct net_device *dev, u16 rid, void *buf, int len,
806 int exact_len)
807 {
808 struct hostap_interface *iface;
809 local_info_t *local;
810 int res, rlen = 0;
811 struct hfa384x_rid_hdr rec;
812
813 iface = netdev_priv(dev);
814 local = iface->local;
815
816 if (local->no_pri) {
817 printk(KERN_DEBUG "%s: cannot get RID %04x (len=%d) - no PRI "
818 "f/w\n", dev->name, rid, len);
819 return -ENOTTY; /* Well.. not really correct, but return
820 * something unique enough.. */
821 }
822
823 if ((local->func->card_present && !local->func->card_present(local)) ||
824 local->hw_downloading)
825 return -ENODEV;
826
827 res = mutex_lock_interruptible(&local->rid_bap_mtx);
828 if (res)
829 return res;
830
831 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS, rid, NULL, NULL);
832 if (res) {
833 printk(KERN_DEBUG "%s: hfa384x_get_rid: CMDCODE_ACCESS failed "
834 "(res=%d, rid=%04x, len=%d)\n",
835 dev->name, res, rid, len);
836 mutex_unlock(&local->rid_bap_mtx);
837 return res;
838 }
839
840 spin_lock_bh(&local->baplock);
841
842 res = hfa384x_setup_bap(dev, BAP0, rid, 0);
843 if (!res)
844 res = hfa384x_from_bap(dev, BAP0, &rec, sizeof(rec));
845
846 if (le16_to_cpu(rec.len) == 0) {
847 /* RID not available */
848 res = -ENODATA;
849 }
850
851 rlen = (le16_to_cpu(rec.len) - 1) * 2;
852 if (!res && exact_len && rlen != len) {
853 printk(KERN_DEBUG "%s: hfa384x_get_rid - RID len mismatch: "
854 "rid=0x%04x, len=%d (expected %d)\n",
855 dev->name, rid, rlen, len);
856 res = -ENODATA;
857 }
858
859 if (!res)
860 res = hfa384x_from_bap(dev, BAP0, buf, len);
861
862 spin_unlock_bh(&local->baplock);
863 mutex_unlock(&local->rid_bap_mtx);
864
865 if (res) {
866 if (res != -ENODATA)
867 printk(KERN_DEBUG "%s: hfa384x_get_rid (rid=%04x, "
868 "len=%d) - failed - res=%d\n", dev->name, rid,
869 len, res);
870 if (res == -ETIMEDOUT)
871 prism2_hw_reset(dev);
872 return res;
873 }
874
875 return rlen;
876 }
877
878
879 static int hfa384x_set_rid(struct net_device *dev, u16 rid, void *buf, int len)
880 {
881 struct hostap_interface *iface;
882 local_info_t *local;
883 struct hfa384x_rid_hdr rec;
884 int res;
885
886 iface = netdev_priv(dev);
887 local = iface->local;
888
889 if (local->no_pri) {
890 printk(KERN_DEBUG "%s: cannot set RID %04x (len=%d) - no PRI "
891 "f/w\n", dev->name, rid, len);
892 return -ENOTTY; /* Well.. not really correct, but return
893 * something unique enough.. */
894 }
895
896 if ((local->func->card_present && !local->func->card_present(local)) ||
897 local->hw_downloading)
898 return -ENODEV;
899
900 rec.rid = cpu_to_le16(rid);
901 /* RID len in words and +1 for rec.rid */
902 rec.len = cpu_to_le16(len / 2 + len % 2 + 1);
903
904 res = mutex_lock_interruptible(&local->rid_bap_mtx);
905 if (res)
906 return res;
907
908 spin_lock_bh(&local->baplock);
909 res = hfa384x_setup_bap(dev, BAP0, rid, 0);
910 if (!res)
911 res = hfa384x_to_bap(dev, BAP0, &rec, sizeof(rec));
912 if (!res)
913 res = hfa384x_to_bap(dev, BAP0, buf, len);
914 spin_unlock_bh(&local->baplock);
915
916 if (res) {
917 printk(KERN_DEBUG "%s: hfa384x_set_rid (rid=%04x, len=%d) - "
918 "failed - res=%d\n", dev->name, rid, len, res);
919 mutex_unlock(&local->rid_bap_mtx);
920 return res;
921 }
922
923 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS_WRITE, rid, NULL, NULL);
924 mutex_unlock(&local->rid_bap_mtx);
925
926 if (res) {
927 printk(KERN_DEBUG "%s: hfa384x_set_rid: CMDCODE_ACCESS_WRITE "
928 "failed (res=%d, rid=%04x, len=%d)\n",
929 dev->name, res, rid, len);
930
931 if (res == -ETIMEDOUT)
932 prism2_hw_reset(dev);
933 }
934
935 return res;
936 }
937
938
939 static void hfa384x_disable_interrupts(struct net_device *dev)
940 {
941 /* disable interrupts and clear event status */
942 HFA384X_OUTW(0, HFA384X_INTEN_OFF);
943 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
944 }
945
946
947 static void hfa384x_enable_interrupts(struct net_device *dev)
948 {
949 /* ack pending events and enable interrupts from selected events */
950 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
951 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF);
952 }
953
954
955 static void hfa384x_events_no_bap0(struct net_device *dev)
956 {
957 HFA384X_OUTW(HFA384X_EVENT_MASK & ~HFA384X_BAP0_EVENTS,
958 HFA384X_INTEN_OFF);
959 }
960
961
962 static void hfa384x_events_all(struct net_device *dev)
963 {
964 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF);
965 }
966
967
968 static void hfa384x_events_only_cmd(struct net_device *dev)
969 {
970 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_INTEN_OFF);
971 }
972
973
974 static u16 hfa384x_allocate_fid(struct net_device *dev, int len)
975 {
976 u16 fid;
977 unsigned long delay;
978
979 /* FIX: this could be replace with hfa384x_cmd() if the Alloc event
980 * below would be handled like CmdCompl event (sleep here, wake up from
981 * interrupt handler */
982 if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_ALLOC, len)) {
983 printk(KERN_DEBUG "%s: cannot allocate fid, len=%d\n",
984 dev->name, len);
985 return 0xffff;
986 }
987
988 delay = jiffies + HFA384X_ALLOC_COMPL_TIMEOUT;
989 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC) &&
990 time_before(jiffies, delay))
991 yield();
992 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC)) {
993 printk("%s: fid allocate, len=%d - timeout\n", dev->name, len);
994 return 0xffff;
995 }
996
997 fid = HFA384X_INW(HFA384X_ALLOCFID_OFF);
998 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF);
999
1000 return fid;
1001 }
1002
1003
1004 static int prism2_reset_port(struct net_device *dev)
1005 {
1006 struct hostap_interface *iface;
1007 local_info_t *local;
1008 int res;
1009
1010 iface = netdev_priv(dev);
1011 local = iface->local;
1012
1013 if (!local->dev_enabled)
1014 return 0;
1015
1016 res = hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0,
1017 NULL, NULL);
1018 if (res)
1019 printk(KERN_DEBUG "%s: reset port failed to disable port\n",
1020 dev->name);
1021 else {
1022 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0,
1023 NULL, NULL);
1024 if (res)
1025 printk(KERN_DEBUG "%s: reset port failed to enable "
1026 "port\n", dev->name);
1027 }
1028
1029 /* It looks like at least some STA firmware versions reset
1030 * fragmentation threshold back to 2346 after enable command. Restore
1031 * the configured value, if it differs from this default. */
1032 if (local->fragm_threshold != 2346 &&
1033 hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD,
1034 local->fragm_threshold)) {
1035 printk(KERN_DEBUG "%s: failed to restore fragmentation "
1036 "threshold (%d) after Port0 enable\n",
1037 dev->name, local->fragm_threshold);
1038 }
1039
1040 /* Some firmwares lose antenna selection settings on reset */
1041 (void) hostap_set_antsel(local);
1042
1043 return res;
1044 }
1045
1046
1047 static int prism2_get_version_info(struct net_device *dev, u16 rid,
1048 const char *txt)
1049 {
1050 struct hfa384x_comp_ident comp;
1051 struct hostap_interface *iface;
1052 local_info_t *local;
1053
1054 iface = netdev_priv(dev);
1055 local = iface->local;
1056
1057 if (local->no_pri) {
1058 /* PRI f/w not yet available - cannot read RIDs */
1059 return -1;
1060 }
1061 if (hfa384x_get_rid(dev, rid, &comp, sizeof(comp), 1) < 0) {
1062 printk(KERN_DEBUG "Could not get RID for component %s\n", txt);
1063 return -1;
1064 }
1065
1066 printk(KERN_INFO "%s: %s: id=0x%02x v%d.%d.%d\n", dev->name, txt,
1067 __le16_to_cpu(comp.id), __le16_to_cpu(comp.major),
1068 __le16_to_cpu(comp.minor), __le16_to_cpu(comp.variant));
1069 return 0;
1070 }
1071
1072
1073 static int prism2_setup_rids(struct net_device *dev)
1074 {
1075 struct hostap_interface *iface;
1076 local_info_t *local;
1077 __le16 tmp;
1078 int ret = 0;
1079
1080 iface = netdev_priv(dev);
1081 local = iface->local;
1082
1083 hostap_set_word(dev, HFA384X_RID_TICKTIME, 2000);
1084
1085 if (!local->fw_ap) {
1086 u16 tmp1 = hostap_get_porttype(local);
1087 ret = hostap_set_word(dev, HFA384X_RID_CNFPORTTYPE, tmp1);
1088 if (ret) {
1089 printk("%s: Port type setting to %d failed\n",
1090 dev->name, tmp1);
1091 goto fail;
1092 }
1093 }
1094
1095 /* Setting SSID to empty string seems to kill the card in Host AP mode
1096 */
1097 if (local->iw_mode != IW_MODE_MASTER || local->essid[0] != '\0') {
1098 ret = hostap_set_string(dev, HFA384X_RID_CNFOWNSSID,
1099 local->essid);
1100 if (ret) {
1101 printk("%s: AP own SSID setting failed\n", dev->name);
1102 goto fail;
1103 }
1104 }
1105
1106 ret = hostap_set_word(dev, HFA384X_RID_CNFMAXDATALEN,
1107 PRISM2_DATA_MAXLEN);
1108 if (ret) {
1109 printk("%s: MAC data length setting to %d failed\n",
1110 dev->name, PRISM2_DATA_MAXLEN);
1111 goto fail;
1112 }
1113
1114 if (hfa384x_get_rid(dev, HFA384X_RID_CHANNELLIST, &tmp, 2, 1) < 0) {
1115 printk("%s: Channel list read failed\n", dev->name);
1116 ret = -EINVAL;
1117 goto fail;
1118 }
1119 local->channel_mask = le16_to_cpu(tmp);
1120
1121 if (local->channel < 1 || local->channel > 14 ||
1122 !(local->channel_mask & (1 << (local->channel - 1)))) {
1123 printk(KERN_WARNING "%s: Channel setting out of range "
1124 "(%d)!\n", dev->name, local->channel);
1125 ret = -EBUSY;
1126 goto fail;
1127 }
1128
1129 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNCHANNEL, local->channel);
1130 if (ret) {
1131 printk("%s: Channel setting to %d failed\n",
1132 dev->name, local->channel);
1133 goto fail;
1134 }
1135
1136 ret = hostap_set_word(dev, HFA384X_RID_CNFBEACONINT,
1137 local->beacon_int);
1138 if (ret) {
1139 printk("%s: Beacon interval setting to %d failed\n",
1140 dev->name, local->beacon_int);
1141 /* this may fail with Symbol/Lucent firmware */
1142 if (ret == -ETIMEDOUT)
1143 goto fail;
1144 }
1145
1146 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNDTIMPERIOD,
1147 local->dtim_period);
1148 if (ret) {
1149 printk("%s: DTIM period setting to %d failed\n",
1150 dev->name, local->dtim_period);
1151 /* this may fail with Symbol/Lucent firmware */
1152 if (ret == -ETIMEDOUT)
1153 goto fail;
1154 }
1155
1156 ret = hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE,
1157 local->is_promisc);
1158 if (ret)
1159 printk(KERN_INFO "%s: Setting promiscuous mode (%d) failed\n",
1160 dev->name, local->is_promisc);
1161
1162 if (!local->fw_ap) {
1163 ret = hostap_set_string(dev, HFA384X_RID_CNFDESIREDSSID,
1164 local->essid);
1165 if (ret) {
1166 printk("%s: Desired SSID setting failed\n", dev->name);
1167 goto fail;
1168 }
1169 }
1170
1171 /* Setup TXRateControl, defaults to allow use of 1, 2, 5.5, and
1172 * 11 Mbps in automatic TX rate fallback and 1 and 2 Mbps as basic
1173 * rates */
1174 if (local->tx_rate_control == 0) {
1175 local->tx_rate_control =
1176 HFA384X_RATES_1MBPS |
1177 HFA384X_RATES_2MBPS |
1178 HFA384X_RATES_5MBPS |
1179 HFA384X_RATES_11MBPS;
1180 }
1181 if (local->basic_rates == 0)
1182 local->basic_rates = HFA384X_RATES_1MBPS | HFA384X_RATES_2MBPS;
1183
1184 if (!local->fw_ap) {
1185 ret = hostap_set_word(dev, HFA384X_RID_TXRATECONTROL,
1186 local->tx_rate_control);
1187 if (ret) {
1188 printk("%s: TXRateControl setting to %d failed\n",
1189 dev->name, local->tx_rate_control);
1190 goto fail;
1191 }
1192
1193 ret = hostap_set_word(dev, HFA384X_RID_CNFSUPPORTEDRATES,
1194 local->tx_rate_control);
1195 if (ret) {
1196 printk("%s: cnfSupportedRates setting to %d failed\n",
1197 dev->name, local->tx_rate_control);
1198 }
1199
1200 ret = hostap_set_word(dev, HFA384X_RID_CNFBASICRATES,
1201 local->basic_rates);
1202 if (ret) {
1203 printk("%s: cnfBasicRates setting to %d failed\n",
1204 dev->name, local->basic_rates);
1205 }
1206
1207 ret = hostap_set_word(dev, HFA384X_RID_CREATEIBSS, 1);
1208 if (ret) {
1209 printk("%s: Create IBSS setting to 1 failed\n",
1210 dev->name);
1211 }
1212 }
1213
1214 if (local->name_set)
1215 (void) hostap_set_string(dev, HFA384X_RID_CNFOWNNAME,
1216 local->name);
1217
1218 if (hostap_set_encryption(local)) {
1219 printk(KERN_INFO "%s: could not configure encryption\n",
1220 dev->name);
1221 }
1222
1223 (void) hostap_set_antsel(local);
1224
1225 if (hostap_set_roaming(local)) {
1226 printk(KERN_INFO "%s: could not set host roaming\n",
1227 dev->name);
1228 }
1229
1230 if (local->sta_fw_ver >= PRISM2_FW_VER(1,6,3) &&
1231 hostap_set_word(dev, HFA384X_RID_CNFENHSECURITY, local->enh_sec))
1232 printk(KERN_INFO "%s: cnfEnhSecurity setting to 0x%x failed\n",
1233 dev->name, local->enh_sec);
1234
1235 /* 32-bit tallies were added in STA f/w 0.8.0, but they were apparently
1236 * not working correctly (last seven counters report bogus values).
1237 * This has been fixed in 0.8.2, so enable 32-bit tallies only
1238 * beginning with that firmware version. Another bug fix for 32-bit
1239 * tallies in 1.4.0; should 16-bit tallies be used for some other
1240 * versions, too? */
1241 if (local->sta_fw_ver >= PRISM2_FW_VER(0,8,2)) {
1242 if (hostap_set_word(dev, HFA384X_RID_CNFTHIRTY2TALLY, 1)) {
1243 printk(KERN_INFO "%s: cnfThirty2Tally setting "
1244 "failed\n", dev->name);
1245 local->tallies32 = 0;
1246 } else
1247 local->tallies32 = 1;
1248 } else
1249 local->tallies32 = 0;
1250
1251 hostap_set_auth_algs(local);
1252
1253 if (hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD,
1254 local->fragm_threshold)) {
1255 printk(KERN_INFO "%s: setting FragmentationThreshold to %d "
1256 "failed\n", dev->name, local->fragm_threshold);
1257 }
1258
1259 if (hostap_set_word(dev, HFA384X_RID_RTSTHRESHOLD,
1260 local->rts_threshold)) {
1261 printk(KERN_INFO "%s: setting RTSThreshold to %d failed\n",
1262 dev->name, local->rts_threshold);
1263 }
1264
1265 if (local->manual_retry_count >= 0 &&
1266 hostap_set_word(dev, HFA384X_RID_CNFALTRETRYCOUNT,
1267 local->manual_retry_count)) {
1268 printk(KERN_INFO "%s: setting cnfAltRetryCount to %d failed\n",
1269 dev->name, local->manual_retry_count);
1270 }
1271
1272 if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1) &&
1273 hfa384x_get_rid(dev, HFA384X_RID_CNFDBMADJUST, &tmp, 2, 1) == 2) {
1274 local->rssi_to_dBm = le16_to_cpu(tmp);
1275 }
1276
1277 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->wpa &&
1278 hostap_set_word(dev, HFA384X_RID_SSNHANDLINGMODE, 1)) {
1279 printk(KERN_INFO "%s: setting ssnHandlingMode to 1 failed\n",
1280 dev->name);
1281 }
1282
1283 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->generic_elem &&
1284 hfa384x_set_rid(dev, HFA384X_RID_GENERICELEMENT,
1285 local->generic_elem, local->generic_elem_len)) {
1286 printk(KERN_INFO "%s: setting genericElement failed\n",
1287 dev->name);
1288 }
1289
1290 fail:
1291 return ret;
1292 }
1293
1294
1295 static int prism2_hw_init(struct net_device *dev, int initial)
1296 {
1297 struct hostap_interface *iface;
1298 local_info_t *local;
1299 int ret, first = 1;
1300 unsigned long start, delay;
1301
1302 PDEBUG(DEBUG_FLOW, "prism2_hw_init()\n");
1303
1304 iface = netdev_priv(dev);
1305 local = iface->local;
1306
1307 clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits);
1308
1309 init:
1310 /* initialize HFA 384x */
1311 ret = hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_INIT, 0);
1312 if (ret) {
1313 printk(KERN_INFO "%s: first command failed - assuming card "
1314 "does not have primary firmware\n", dev_info);
1315 }
1316
1317 if (first && (HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) {
1318 /* EvStat has Cmd bit set in some cases, so retry once if no
1319 * wait was needed */
1320 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
1321 printk(KERN_DEBUG "%s: init command completed too quickly - "
1322 "retrying\n", dev->name);
1323 first = 0;
1324 goto init;
1325 }
1326
1327 start = jiffies;
1328 delay = jiffies + HFA384X_INIT_TIMEOUT;
1329 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) &&
1330 time_before(jiffies, delay))
1331 yield();
1332 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) {
1333 printk(KERN_DEBUG "%s: assuming no Primary image in "
1334 "flash - card initialization not completed\n",
1335 dev_info);
1336 local->no_pri = 1;
1337 #ifdef PRISM2_DOWNLOAD_SUPPORT
1338 if (local->sram_type == -1)
1339 local->sram_type = prism2_get_ram_size(local);
1340 #endif /* PRISM2_DOWNLOAD_SUPPORT */
1341 return 1;
1342 }
1343 local->no_pri = 0;
1344 printk(KERN_DEBUG "prism2_hw_init: initialized in %lu ms\n",
1345 (jiffies - start) * 1000 / HZ);
1346 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
1347 return 0;
1348 }
1349
1350
1351 static int prism2_hw_init2(struct net_device *dev, int initial)
1352 {
1353 struct hostap_interface *iface;
1354 local_info_t *local;
1355 int i;
1356
1357 iface = netdev_priv(dev);
1358 local = iface->local;
1359
1360 #ifdef PRISM2_DOWNLOAD_SUPPORT
1361 kfree(local->pda);
1362 if (local->no_pri)
1363 local->pda = NULL;
1364 else
1365 local->pda = prism2_read_pda(dev);
1366 #endif /* PRISM2_DOWNLOAD_SUPPORT */
1367
1368 hfa384x_disable_interrupts(dev);
1369
1370 #ifndef final_version
1371 HFA384X_OUTW(HFA384X_MAGIC, HFA384X_SWSUPPORT0_OFF);
1372 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) {
1373 printk("SWSUPPORT0 write/read failed: %04X != %04X\n",
1374 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC);
1375 goto failed;
1376 }
1377 #endif
1378
1379 if (initial || local->pri_only) {
1380 hfa384x_events_only_cmd(dev);
1381 /* get card version information */
1382 if (prism2_get_version_info(dev, HFA384X_RID_NICID, "NIC") ||
1383 prism2_get_version_info(dev, HFA384X_RID_PRIID, "PRI")) {
1384 hfa384x_disable_interrupts(dev);
1385 goto failed;
1386 }
1387
1388 if (prism2_get_version_info(dev, HFA384X_RID_STAID, "STA")) {
1389 printk(KERN_DEBUG "%s: Failed to read STA f/w version "
1390 "- only Primary f/w present\n", dev->name);
1391 local->pri_only = 1;
1392 return 0;
1393 }
1394 local->pri_only = 0;
1395 hfa384x_disable_interrupts(dev);
1396 }
1397
1398 /* FIX: could convert allocate_fid to use sleeping CmdCompl wait and
1399 * enable interrupts before this. This would also require some sort of
1400 * sleeping AllocEv waiting */
1401
1402 /* allocate TX FIDs */
1403 local->txfid_len = PRISM2_TXFID_LEN;
1404 for (i = 0; i < PRISM2_TXFID_COUNT; i++) {
1405 local->txfid[i] = hfa384x_allocate_fid(dev, local->txfid_len);
1406 if (local->txfid[i] == 0xffff && local->txfid_len > 1600) {
1407 local->txfid[i] = hfa384x_allocate_fid(dev, 1600);
1408 if (local->txfid[i] != 0xffff) {
1409 printk(KERN_DEBUG "%s: Using shorter TX FID "
1410 "(1600 bytes)\n", dev->name);
1411 local->txfid_len = 1600;
1412 }
1413 }
1414 if (local->txfid[i] == 0xffff)
1415 goto failed;
1416 local->intransmitfid[i] = PRISM2_TXFID_EMPTY;
1417 }
1418
1419 hfa384x_events_only_cmd(dev);
1420
1421 if (initial) {
1422 struct list_head *ptr;
1423 prism2_check_sta_fw_version(local);
1424
1425 if (hfa384x_get_rid(dev, HFA384X_RID_CNFOWNMACADDR,
1426 dev->dev_addr, 6, 1) < 0) {
1427 printk("%s: could not get own MAC address\n",
1428 dev->name);
1429 }
1430 list_for_each(ptr, &local->hostap_interfaces) {
1431 iface = list_entry(ptr, struct hostap_interface, list);
1432 memcpy(iface->dev->dev_addr, dev->dev_addr, ETH_ALEN);
1433 }
1434 } else if (local->fw_ap)
1435 prism2_check_sta_fw_version(local);
1436
1437 prism2_setup_rids(dev);
1438
1439 /* MAC is now configured, but port 0 is not yet enabled */
1440 return 0;
1441
1442 failed:
1443 if (!local->no_pri)
1444 printk(KERN_WARNING "%s: Initialization failed\n", dev_info);
1445 return 1;
1446 }
1447
1448
1449 static int prism2_hw_enable(struct net_device *dev, int initial)
1450 {
1451 struct hostap_interface *iface;
1452 local_info_t *local;
1453 int was_resetting;
1454
1455 iface = netdev_priv(dev);
1456 local = iface->local;
1457 was_resetting = local->hw_resetting;
1458
1459 if (hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, NULL, NULL)) {
1460 printk("%s: MAC port 0 enabling failed\n", dev->name);
1461 return 1;
1462 }
1463
1464 local->hw_ready = 1;
1465 local->hw_reset_tries = 0;
1466 local->hw_resetting = 0;
1467 hfa384x_enable_interrupts(dev);
1468
1469 /* at least D-Link DWL-650 seems to require additional port reset
1470 * before it starts acting as an AP, so reset port automatically
1471 * here just in case */
1472 if (initial && prism2_reset_port(dev)) {
1473 printk("%s: MAC port 0 reseting failed\n", dev->name);
1474 return 1;
1475 }
1476
1477 if (was_resetting && netif_queue_stopped(dev)) {
1478 /* If hw_reset() was called during pending transmit, netif
1479 * queue was stopped. Wake it up now since the wlan card has
1480 * been resetted. */
1481 netif_wake_queue(dev);
1482 }
1483
1484 return 0;
1485 }
1486
1487
1488 static int prism2_hw_config(struct net_device *dev, int initial)
1489 {
1490 struct hostap_interface *iface;
1491 local_info_t *local;
1492
1493 iface = netdev_priv(dev);
1494 local = iface->local;
1495
1496 if (local->hw_downloading)
1497 return 1;
1498
1499 if (prism2_hw_init(dev, initial)) {
1500 return local->no_pri ? 0 : 1;
1501 }
1502
1503 if (prism2_hw_init2(dev, initial))
1504 return 1;
1505
1506 /* Enable firmware if secondary image is loaded and at least one of the
1507 * netdevices is up. */
1508 if (!local->pri_only &&
1509 (initial == 0 || (initial == 2 && local->num_dev_open > 0))) {
1510 if (!local->dev_enabled)
1511 prism2_callback(local, PRISM2_CALLBACK_ENABLE);
1512 local->dev_enabled = 1;
1513 return prism2_hw_enable(dev, initial);
1514 }
1515
1516 return 0;
1517 }
1518
1519
1520 static void prism2_hw_shutdown(struct net_device *dev, int no_disable)
1521 {
1522 struct hostap_interface *iface;
1523 local_info_t *local;
1524
1525 iface = netdev_priv(dev);
1526 local = iface->local;
1527
1528 /* Allow only command completion events during disable */
1529 hfa384x_events_only_cmd(dev);
1530
1531 local->hw_ready = 0;
1532 if (local->dev_enabled)
1533 prism2_callback(local, PRISM2_CALLBACK_DISABLE);
1534 local->dev_enabled = 0;
1535
1536 if (local->func->card_present && !local->func->card_present(local)) {
1537 printk(KERN_DEBUG "%s: card already removed or not configured "
1538 "during shutdown\n", dev->name);
1539 return;
1540 }
1541
1542 if ((no_disable & HOSTAP_HW_NO_DISABLE) == 0 &&
1543 hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, NULL, NULL))
1544 printk(KERN_WARNING "%s: Shutdown failed\n", dev_info);
1545
1546 hfa384x_disable_interrupts(dev);
1547
1548 if (no_disable & HOSTAP_HW_ENABLE_CMDCOMPL)
1549 hfa384x_events_only_cmd(dev);
1550 else
1551 prism2_clear_cmd_queue(local);
1552 }
1553
1554
1555 static void prism2_hw_reset(struct net_device *dev)
1556 {
1557 struct hostap_interface *iface;
1558 local_info_t *local;
1559
1560
1561 iface = netdev_priv(dev);
1562 local = iface->local;
1563
1564 if (in_interrupt()) {
1565 printk(KERN_DEBUG "%s: driver bug - prism2_hw_reset() called "
1566 "in interrupt context\n", dev->name);
1567 return;
1568 }
1569
1570 if (local->hw_downloading)
1571 return;
1572
1573 if (local->hw_resetting) {
1574 printk(KERN_WARNING "%s: %s: already resetting card - "
1575 "ignoring reset request\n", dev_info, dev->name);
1576 return;
1577 }
1578
1579 local->hw_reset_tries++;
1580 if (local->hw_reset_tries > 10) {
1581 printk(KERN_WARNING "%s: too many reset tries, skipping\n",
1582 dev->name);
1583 return;
1584 }
1585
1586 printk(KERN_WARNING "%s: %s: resetting card\n", dev_info, dev->name);
1587 hfa384x_disable_interrupts(dev);
1588 local->hw_resetting = 1;
1589 if (local->func->cor_sreset) {
1590 /* Host system seems to hang in some cases with high traffic
1591 * load or shared interrupts during COR sreset. Disable shared
1592 * interrupts during reset to avoid these crashes. COS sreset
1593 * takes quite a long time, so it is unfortunate that this
1594 * seems to be needed. Anyway, I do not know of any better way
1595 * of avoiding the crash. */
1596 disable_irq(dev->irq);
1597 local->func->cor_sreset(local);
1598 enable_irq(dev->irq);
1599 }
1600 prism2_hw_shutdown(dev, 1);
1601 prism2_hw_config(dev, 0);
1602 local->hw_resetting = 0;
1603
1604 #ifdef PRISM2_DOWNLOAD_SUPPORT
1605 if (local->dl_pri) {
1606 printk(KERN_DEBUG "%s: persistent download of primary "
1607 "firmware\n", dev->name);
1608 if (prism2_download_genesis(local, local->dl_pri) < 0)
1609 printk(KERN_WARNING "%s: download (PRI) failed\n",
1610 dev->name);
1611 }
1612
1613 if (local->dl_sec) {
1614 printk(KERN_DEBUG "%s: persistent download of secondary "
1615 "firmware\n", dev->name);
1616 if (prism2_download_volatile(local, local->dl_sec) < 0)
1617 printk(KERN_WARNING "%s: download (SEC) failed\n",
1618 dev->name);
1619 }
1620 #endif /* PRISM2_DOWNLOAD_SUPPORT */
1621
1622 /* TODO: restore beacon TIM bits for STAs that have buffered frames */
1623 }
1624
1625
1626 static void prism2_schedule_reset(local_info_t *local)
1627 {
1628 schedule_work(&local->reset_queue);
1629 }
1630
1631
1632 /* Called only as scheduled task after noticing card timeout in interrupt
1633 * context */
1634 static void handle_reset_queue(struct work_struct *work)
1635 {
1636 local_info_t *local = container_of(work, local_info_t, reset_queue);
1637
1638 printk(KERN_DEBUG "%s: scheduled card reset\n", local->dev->name);
1639 prism2_hw_reset(local->dev);
1640
1641 if (netif_queue_stopped(local->dev)) {
1642 int i;
1643
1644 for (i = 0; i < PRISM2_TXFID_COUNT; i++)
1645 if (local->intransmitfid[i] == PRISM2_TXFID_EMPTY) {
1646 PDEBUG(DEBUG_EXTRA, "prism2_tx_timeout: "
1647 "wake up queue\n");
1648 netif_wake_queue(local->dev);
1649 break;
1650 }
1651 }
1652 }
1653
1654
1655 static int prism2_get_txfid_idx(local_info_t *local)
1656 {
1657 int idx, end;
1658 unsigned long flags;
1659
1660 spin_lock_irqsave(&local->txfidlock, flags);
1661 end = idx = local->next_txfid;
1662 do {
1663 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) {
1664 local->intransmitfid[idx] = PRISM2_TXFID_RESERVED;
1665 spin_unlock_irqrestore(&local->txfidlock, flags);
1666 return idx;
1667 }
1668 idx++;
1669 if (idx >= PRISM2_TXFID_COUNT)
1670 idx = 0;
1671 } while (idx != end);
1672 spin_unlock_irqrestore(&local->txfidlock, flags);
1673
1674 PDEBUG(DEBUG_EXTRA2, "prism2_get_txfid_idx: no room in txfid buf: "
1675 "packet dropped\n");
1676 local->dev->stats.tx_dropped++;
1677
1678 return -1;
1679 }
1680
1681
1682 /* Called only from hardware IRQ */
1683 static void prism2_transmit_cb(struct net_device *dev, long context,
1684 u16 resp0, u16 res)
1685 {
1686 struct hostap_interface *iface;
1687 local_info_t *local;
1688 int idx = (int) context;
1689
1690 iface = netdev_priv(dev);
1691 local = iface->local;
1692
1693 if (res) {
1694 printk(KERN_DEBUG "%s: prism2_transmit_cb - res=0x%02x\n",
1695 dev->name, res);
1696 return;
1697 }
1698
1699 if (idx < 0 || idx >= PRISM2_TXFID_COUNT) {
1700 printk(KERN_DEBUG "%s: prism2_transmit_cb called with invalid "
1701 "idx=%d\n", dev->name, idx);
1702 return;
1703 }
1704
1705 if (!test_and_clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
1706 printk(KERN_DEBUG "%s: driver bug: prism2_transmit_cb called "
1707 "with no pending transmit\n", dev->name);
1708 }
1709
1710 if (netif_queue_stopped(dev)) {
1711 /* ready for next TX, so wake up queue that was stopped in
1712 * prism2_transmit() */
1713 netif_wake_queue(dev);
1714 }
1715
1716 spin_lock(&local->txfidlock);
1717
1718 /* With reclaim, Resp0 contains new txfid for transmit; the old txfid
1719 * will be automatically allocated for the next TX frame */
1720 local->intransmitfid[idx] = resp0;
1721
1722 PDEBUG(DEBUG_FID, "%s: prism2_transmit_cb: txfid[%d]=0x%04x, "
1723 "resp0=0x%04x, transmit_txfid=0x%04x\n",
1724 dev->name, idx, local->txfid[idx],
1725 resp0, local->intransmitfid[local->next_txfid]);
1726
1727 idx++;
1728 if (idx >= PRISM2_TXFID_COUNT)
1729 idx = 0;
1730 local->next_txfid = idx;
1731
1732 /* check if all TX buffers are occupied */
1733 do {
1734 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) {
1735 spin_unlock(&local->txfidlock);
1736 return;
1737 }
1738 idx++;
1739 if (idx >= PRISM2_TXFID_COUNT)
1740 idx = 0;
1741 } while (idx != local->next_txfid);
1742 spin_unlock(&local->txfidlock);
1743
1744 /* no empty TX buffers, stop queue */
1745 netif_stop_queue(dev);
1746 }
1747
1748
1749 /* Called only from software IRQ if PCI bus master is not used (with bus master
1750 * this can be called both from software and hardware IRQ) */
1751 static int prism2_transmit(struct net_device *dev, int idx)
1752 {
1753 struct hostap_interface *iface;
1754 local_info_t *local;
1755 int res;
1756
1757 iface = netdev_priv(dev);
1758 local = iface->local;
1759
1760 /* The driver tries to stop netif queue so that there would not be
1761 * more than one attempt to transmit frames going on; check that this
1762 * is really the case */
1763
1764 if (test_and_set_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
1765 printk(KERN_DEBUG "%s: driver bug - prism2_transmit() called "
1766 "when previous TX was pending\n", dev->name);
1767 return -1;
1768 }
1769
1770 /* stop the queue for the time that transmit is pending */
1771 netif_stop_queue(dev);
1772
1773 /* transmit packet */
1774 res = hfa384x_cmd_callback(
1775 dev,
1776 HFA384X_CMDCODE_TRANSMIT | HFA384X_CMD_TX_RECLAIM,
1777 local->txfid[idx],
1778 prism2_transmit_cb, (long) idx);
1779
1780 if (res) {
1781 printk(KERN_DEBUG "%s: prism2_transmit: CMDCODE_TRANSMIT "
1782 "failed (res=%d)\n", dev->name, res);
1783 dev->stats.tx_dropped++;
1784 netif_wake_queue(dev);
1785 return -1;
1786 }
1787 dev->trans_start = jiffies;
1788
1789 /* Since we did not wait for command completion, the card continues
1790 * to process on the background and we will finish handling when
1791 * command completion event is handled (prism2_cmd_ev() function) */
1792
1793 return 0;
1794 }
1795
1796
1797 /* Send IEEE 802.11 frame (convert the header into Prism2 TX descriptor and
1798 * send the payload with this descriptor) */
1799 /* Called only from software IRQ */
1800 static int prism2_tx_80211(struct sk_buff *skb, struct net_device *dev)
1801 {
1802 struct hostap_interface *iface;
1803 local_info_t *local;
1804 struct hfa384x_tx_frame txdesc;
1805 struct hostap_skb_tx_data *meta;
1806 int hdr_len, data_len, idx, res, ret = -1;
1807 u16 tx_control, fc;
1808
1809 iface = netdev_priv(dev);
1810 local = iface->local;
1811
1812 meta = (struct hostap_skb_tx_data *) skb->cb;
1813
1814 prism2_callback(local, PRISM2_CALLBACK_TX_START);
1815
1816 if ((local->func->card_present && !local->func->card_present(local)) ||
1817 !local->hw_ready || local->hw_downloading || local->pri_only) {
1818 if (net_ratelimit()) {
1819 printk(KERN_DEBUG "%s: prism2_tx_80211: hw not ready -"
1820 " skipping\n", dev->name);
1821 }
1822 goto fail;
1823 }
1824
1825 memset(&txdesc, 0, sizeof(txdesc));
1826
1827 /* skb->data starts with txdesc->frame_control */
1828 hdr_len = 24;
1829 skb_copy_from_linear_data(skb, &txdesc.frame_control, hdr_len);
1830 fc = le16_to_cpu(txdesc.frame_control);
1831 if (ieee80211_is_data(txdesc.frame_control) &&
1832 ieee80211_has_a4(txdesc.frame_control) &&
1833 skb->len >= 30) {
1834 /* Addr4 */
1835 skb_copy_from_linear_data_offset(skb, hdr_len, txdesc.addr4,
1836 ETH_ALEN);
1837 hdr_len += ETH_ALEN;
1838 }
1839
1840 tx_control = local->tx_control;
1841 if (meta->tx_cb_idx) {
1842 tx_control |= HFA384X_TX_CTRL_TX_OK;
1843 txdesc.sw_support = cpu_to_le32(meta->tx_cb_idx);
1844 }
1845 txdesc.tx_control = cpu_to_le16(tx_control);
1846 txdesc.tx_rate = meta->rate;
1847
1848 data_len = skb->len - hdr_len;
1849 txdesc.data_len = cpu_to_le16(data_len);
1850 txdesc.len = cpu_to_be16(data_len);
1851
1852 idx = prism2_get_txfid_idx(local);
1853 if (idx < 0)
1854 goto fail;
1855
1856 if (local->frame_dump & PRISM2_DUMP_TX_HDR)
1857 hostap_dump_tx_header(dev->name, &txdesc);
1858
1859 spin_lock(&local->baplock);
1860 res = hfa384x_setup_bap(dev, BAP0, local->txfid[idx], 0);
1861
1862 if (!res)
1863 res = hfa384x_to_bap(dev, BAP0, &txdesc, sizeof(txdesc));
1864 if (!res)
1865 res = hfa384x_to_bap(dev, BAP0, skb->data + hdr_len,
1866 skb->len - hdr_len);
1867 spin_unlock(&local->baplock);
1868
1869 if (!res)
1870 res = prism2_transmit(dev, idx);
1871 if (res) {
1872 printk(KERN_DEBUG "%s: prism2_tx_80211 - to BAP0 failed\n",
1873 dev->name);
1874 local->intransmitfid[idx] = PRISM2_TXFID_EMPTY;
1875 schedule_work(&local->reset_queue);
1876 goto fail;
1877 }
1878
1879 ret = 0;
1880
1881 fail:
1882 prism2_callback(local, PRISM2_CALLBACK_TX_END);
1883 return ret;
1884 }
1885
1886
1887 /* Some SMP systems have reported number of odd errors with hostap_pci. fid
1888 * register has changed values between consecutive reads for an unknown reason.
1889 * This should really not happen, so more debugging is needed. This test
1890 * version is a bit slower, but it will detect most of such register changes
1891 * and will try to get the correct fid eventually. */
1892 #define EXTRA_FID_READ_TESTS
1893
1894 static u16 prism2_read_fid_reg(struct net_device *dev, u16 reg)
1895 {
1896 #ifdef EXTRA_FID_READ_TESTS
1897 u16 val, val2, val3;
1898 int i;
1899
1900 for (i = 0; i < 10; i++) {
1901 val = HFA384X_INW(reg);
1902 val2 = HFA384X_INW(reg);
1903 val3 = HFA384X_INW(reg);
1904
1905 if (val == val2 && val == val3)
1906 return val;
1907
1908 printk(KERN_DEBUG "%s: detected fid change (try=%d, reg=%04x):"
1909 " %04x %04x %04x\n",
1910 dev->name, i, reg, val, val2, val3);
1911 if ((val == val2 || val == val3) && val != 0)
1912 return val;
1913 if (val2 == val3 && val2 != 0)
1914 return val2;
1915 }
1916 printk(KERN_WARNING "%s: Uhhuh.. could not read good fid from reg "
1917 "%04x (%04x %04x %04x)\n", dev->name, reg, val, val2, val3);
1918 return val;
1919 #else /* EXTRA_FID_READ_TESTS */
1920 return HFA384X_INW(reg);
1921 #endif /* EXTRA_FID_READ_TESTS */
1922 }
1923
1924
1925 /* Called only as a tasklet (software IRQ) */
1926 static void prism2_rx(local_info_t *local)
1927 {
1928 struct net_device *dev = local->dev;
1929 int res, rx_pending = 0;
1930 u16 len, hdr_len, rxfid, status, macport;
1931 struct hfa384x_rx_frame rxdesc;
1932 struct sk_buff *skb = NULL;
1933
1934 prism2_callback(local, PRISM2_CALLBACK_RX_START);
1935
1936 rxfid = prism2_read_fid_reg(dev, HFA384X_RXFID_OFF);
1937 #ifndef final_version
1938 if (rxfid == 0) {
1939 rxfid = HFA384X_INW(HFA384X_RXFID_OFF);
1940 printk(KERN_DEBUG "prism2_rx: rxfid=0 (next 0x%04x)\n",
1941 rxfid);
1942 if (rxfid == 0) {
1943 schedule_work(&local->reset_queue);
1944 goto rx_dropped;
1945 }
1946 /* try to continue with the new rxfid value */
1947 }
1948 #endif
1949
1950 spin_lock(&local->baplock);
1951 res = hfa384x_setup_bap(dev, BAP0, rxfid, 0);
1952 if (!res)
1953 res = hfa384x_from_bap(dev, BAP0, &rxdesc, sizeof(rxdesc));
1954
1955 if (res) {
1956 spin_unlock(&local->baplock);
1957 printk(KERN_DEBUG "%s: copy from BAP0 failed %d\n", dev->name,
1958 res);
1959 if (res == -ETIMEDOUT) {
1960 schedule_work(&local->reset_queue);
1961 }
1962 goto rx_dropped;
1963 }
1964
1965 len = le16_to_cpu(rxdesc.data_len);
1966 hdr_len = sizeof(rxdesc);
1967 status = le16_to_cpu(rxdesc.status);
1968 macport = (status >> 8) & 0x07;
1969
1970 /* Drop frames with too large reported payload length. Monitor mode
1971 * seems to sometimes pass frames (e.g., ctrl::ack) with signed and
1972 * negative value, so allow also values 65522 .. 65534 (-14 .. -2) for
1973 * macport 7 */
1974 if (len > PRISM2_DATA_MAXLEN + 8 /* WEP */) {
1975 if (macport == 7 && local->iw_mode == IW_MODE_MONITOR) {
1976 if (len >= (u16) -14) {
1977 hdr_len -= 65535 - len;
1978 hdr_len--;
1979 }
1980 len = 0;
1981 } else {
1982 spin_unlock(&local->baplock);
1983 printk(KERN_DEBUG "%s: Received frame with invalid "
1984 "length 0x%04x\n", dev->name, len);
1985 hostap_dump_rx_header(dev->name, &rxdesc);
1986 goto rx_dropped;
1987 }
1988 }
1989
1990 skb = dev_alloc_skb(len + hdr_len);
1991 if (!skb) {
1992 spin_unlock(&local->baplock);
1993 printk(KERN_DEBUG "%s: RX failed to allocate skb\n",
1994 dev->name);
1995 goto rx_dropped;
1996 }
1997 skb->dev = dev;
1998 memcpy(skb_put(skb, hdr_len), &rxdesc, hdr_len);
1999
2000 if (len > 0)
2001 res = hfa384x_from_bap(dev, BAP0, skb_put(skb, len), len);
2002 spin_unlock(&local->baplock);
2003 if (res) {
2004 printk(KERN_DEBUG "%s: RX failed to read "
2005 "frame data\n", dev->name);
2006 goto rx_dropped;
2007 }
2008
2009 skb_queue_tail(&local->rx_list, skb);
2010 tasklet_schedule(&local->rx_tasklet);
2011
2012 rx_exit:
2013 prism2_callback(local, PRISM2_CALLBACK_RX_END);
2014 if (!rx_pending) {
2015 HFA384X_OUTW(HFA384X_EV_RX, HFA384X_EVACK_OFF);
2016 }
2017
2018 return;
2019
2020 rx_dropped:
2021 dev->stats.rx_dropped++;
2022 if (skb)
2023 dev_kfree_skb(skb);
2024 goto rx_exit;
2025 }
2026
2027
2028 /* Called only as a tasklet (software IRQ) */
2029 static void hostap_rx_skb(local_info_t *local, struct sk_buff *skb)
2030 {
2031 struct hfa384x_rx_frame *rxdesc;
2032 struct net_device *dev = skb->dev;
2033 struct hostap_80211_rx_status stats;
2034 int hdrlen, rx_hdrlen;
2035
2036 rx_hdrlen = sizeof(*rxdesc);
2037 if (skb->len < sizeof(*rxdesc)) {
2038 /* Allow monitor mode to receive shorter frames */
2039 if (local->iw_mode == IW_MODE_MONITOR &&
2040 skb->len >= sizeof(*rxdesc) - 30) {
2041 rx_hdrlen = skb->len;
2042 } else {
2043 dev_kfree_skb(skb);
2044 return;
2045 }
2046 }
2047
2048 rxdesc = (struct hfa384x_rx_frame *) skb->data;
2049
2050 if (local->frame_dump & PRISM2_DUMP_RX_HDR &&
2051 skb->len >= sizeof(*rxdesc))
2052 hostap_dump_rx_header(dev->name, rxdesc);
2053
2054 if (le16_to_cpu(rxdesc->status) & HFA384X_RX_STATUS_FCSERR &&
2055 (!local->monitor_allow_fcserr ||
2056 local->iw_mode != IW_MODE_MONITOR))
2057 goto drop;
2058
2059 if (skb->len > PRISM2_DATA_MAXLEN) {
2060 printk(KERN_DEBUG "%s: RX: len(%d) > MAX(%d)\n",
2061 dev->name, skb->len, PRISM2_DATA_MAXLEN);
2062 goto drop;
2063 }
2064
2065 stats.mac_time = le32_to_cpu(rxdesc->time);
2066 stats.signal = rxdesc->signal - local->rssi_to_dBm;
2067 stats.noise = rxdesc->silence - local->rssi_to_dBm;
2068 stats.rate = rxdesc->rate;
2069
2070 /* Convert Prism2 RX structure into IEEE 802.11 header */
2071 hdrlen = hostap_80211_get_hdrlen(rxdesc->frame_control);
2072 if (hdrlen > rx_hdrlen)
2073 hdrlen = rx_hdrlen;
2074
2075 memmove(skb_pull(skb, rx_hdrlen - hdrlen),
2076 &rxdesc->frame_control, hdrlen);
2077
2078 hostap_80211_rx(dev, skb, &stats);
2079 return;
2080
2081 drop:
2082 dev_kfree_skb(skb);
2083 }
2084
2085
2086 /* Called only as a tasklet (software IRQ) */
2087 static void hostap_rx_tasklet(unsigned long data)
2088 {
2089 local_info_t *local = (local_info_t *) data;
2090 struct sk_buff *skb;
2091
2092 while ((skb = skb_dequeue(&local->rx_list)) != NULL)
2093 hostap_rx_skb(local, skb);
2094 }
2095
2096
2097 /* Called only from hardware IRQ */
2098 static void prism2_alloc_ev(struct net_device *dev)
2099 {
2100 struct hostap_interface *iface;
2101 local_info_t *local;
2102 int idx;
2103 u16 fid;
2104
2105 iface = netdev_priv(dev);
2106 local = iface->local;
2107
2108 fid = prism2_read_fid_reg(dev, HFA384X_ALLOCFID_OFF);
2109
2110 PDEBUG(DEBUG_FID, "FID: interrupt: ALLOC - fid=0x%04x\n", fid);
2111
2112 spin_lock(&local->txfidlock);
2113 idx = local->next_alloc;
2114
2115 do {
2116 if (local->txfid[idx] == fid) {
2117 PDEBUG(DEBUG_FID, "FID: found matching txfid[%d]\n",
2118 idx);
2119
2120 #ifndef final_version
2121 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY)
2122 printk("Already released txfid found at idx "
2123 "%d\n", idx);
2124 if (local->intransmitfid[idx] == PRISM2_TXFID_RESERVED)
2125 printk("Already reserved txfid found at idx "
2126 "%d\n", idx);
2127 #endif
2128 local->intransmitfid[idx] = PRISM2_TXFID_EMPTY;
2129 idx++;
2130 local->next_alloc = idx >= PRISM2_TXFID_COUNT ? 0 :
2131 idx;
2132
2133 if (!test_bit(HOSTAP_BITS_TRANSMIT, &local->bits) &&
2134 netif_queue_stopped(dev))
2135 netif_wake_queue(dev);
2136
2137 spin_unlock(&local->txfidlock);
2138 return;
2139 }
2140
2141 idx++;
2142 if (idx >= PRISM2_TXFID_COUNT)
2143 idx = 0;
2144 } while (idx != local->next_alloc);
2145
2146 printk(KERN_WARNING "%s: could not find matching txfid (0x%04x, new "
2147 "read 0x%04x) for alloc event\n", dev->name, fid,
2148 HFA384X_INW(HFA384X_ALLOCFID_OFF));
2149 printk(KERN_DEBUG "TXFIDs:");
2150 for (idx = 0; idx < PRISM2_TXFID_COUNT; idx++)
2151 printk(" %04x[%04x]", local->txfid[idx],
2152 local->intransmitfid[idx]);
2153 printk("\n");
2154 spin_unlock(&local->txfidlock);
2155
2156 /* FIX: should probably schedule reset; reference to one txfid was lost
2157 * completely.. Bad things will happen if we run out of txfids
2158 * Actually, this will cause netdev watchdog to notice TX timeout and
2159 * then card reset after all txfids have been leaked. */
2160 }
2161
2162
2163 /* Called only as a tasklet (software IRQ) */
2164 static void hostap_tx_callback(local_info_t *local,
2165 struct hfa384x_tx_frame *txdesc, int ok,
2166 char *payload)
2167 {
2168 u16 sw_support, hdrlen, len;
2169 struct sk_buff *skb;
2170 struct hostap_tx_callback_info *cb;
2171
2172 /* Make sure that frame was from us. */
2173 if (memcmp(txdesc->addr2, local->dev->dev_addr, ETH_ALEN)) {
2174 printk(KERN_DEBUG "%s: TX callback - foreign frame\n",
2175 local->dev->name);
2176 return;
2177 }
2178
2179 sw_support = le32_to_cpu(txdesc->sw_support);
2180
2181 spin_lock(&local->lock);
2182 cb = local->tx_callback;
2183 while (cb != NULL && cb->idx != sw_support)
2184 cb = cb->next;
2185 spin_unlock(&local->lock);
2186
2187 if (cb == NULL) {
2188 printk(KERN_DEBUG "%s: could not find TX callback (idx %d)\n",
2189 local->dev->name, sw_support);
2190 return;
2191 }
2192
2193 hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control);
2194 len = le16_to_cpu(txdesc->data_len);
2195 skb = dev_alloc_skb(hdrlen + len);
2196 if (skb == NULL) {
2197 printk(KERN_DEBUG "%s: hostap_tx_callback failed to allocate "
2198 "skb\n", local->dev->name);
2199 return;
2200 }
2201
2202 memcpy(skb_put(skb, hdrlen), (void *) &txdesc->frame_control, hdrlen);
2203 if (payload)
2204 memcpy(skb_put(skb, len), payload, len);
2205
2206 skb->dev = local->dev;
2207 skb_reset_mac_header(skb);
2208
2209 cb->func(skb, ok, cb->data);
2210 }
2211
2212
2213 /* Called only as a tasklet (software IRQ) */
2214 static int hostap_tx_compl_read(local_info_t *local, int error,
2215 struct hfa384x_tx_frame *txdesc,
2216 char **payload)
2217 {
2218 u16 fid, len;
2219 int res, ret = 0;
2220 struct net_device *dev = local->dev;
2221
2222 fid = prism2_read_fid_reg(dev, HFA384X_TXCOMPLFID_OFF);
2223
2224 PDEBUG(DEBUG_FID, "interrupt: TX (err=%d) - fid=0x%04x\n", fid, error);
2225
2226 spin_lock(&local->baplock);
2227 res = hfa384x_setup_bap(dev, BAP0, fid, 0);
2228 if (!res)
2229 res = hfa384x_from_bap(dev, BAP0, txdesc, sizeof(*txdesc));
2230 if (res) {
2231 PDEBUG(DEBUG_EXTRA, "%s: TX (err=%d) - fid=0x%04x - could not "
2232 "read txdesc\n", dev->name, error, fid);
2233 if (res == -ETIMEDOUT) {
2234 schedule_work(&local->reset_queue);
2235 }
2236 ret = -1;
2237 goto fail;
2238 }
2239 if (txdesc->sw_support) {
2240 len = le16_to_cpu(txdesc->data_len);
2241 if (len < PRISM2_DATA_MAXLEN) {
2242 *payload = kmalloc(len, GFP_ATOMIC);
2243 if (*payload == NULL ||
2244 hfa384x_from_bap(dev, BAP0, *payload, len)) {
2245 PDEBUG(DEBUG_EXTRA, "%s: could not read TX "
2246 "frame payload\n", dev->name);
2247 kfree(*payload);
2248 *payload = NULL;
2249 ret = -1;
2250 goto fail;
2251 }
2252 }
2253 }
2254
2255 fail:
2256 spin_unlock(&local->baplock);
2257
2258 return ret;
2259 }
2260
2261
2262 /* Called only as a tasklet (software IRQ) */
2263 static void prism2_tx_ev(local_info_t *local)
2264 {
2265 struct net_device *dev = local->dev;
2266 char *payload = NULL;
2267 struct hfa384x_tx_frame txdesc;
2268
2269 if (hostap_tx_compl_read(local, 0, &txdesc, &payload))
2270 goto fail;
2271
2272 if (local->frame_dump & PRISM2_DUMP_TX_HDR) {
2273 PDEBUG(DEBUG_EXTRA, "%s: TX - status=0x%04x "
2274 "retry_count=%d tx_rate=%d seq_ctrl=%d "
2275 "duration_id=%d\n",
2276 dev->name, le16_to_cpu(txdesc.status),
2277 txdesc.retry_count, txdesc.tx_rate,
2278 le16_to_cpu(txdesc.seq_ctrl),
2279 le16_to_cpu(txdesc.duration_id));
2280 }
2281
2282 if (txdesc.sw_support)
2283 hostap_tx_callback(local, &txdesc, 1, payload);
2284 kfree(payload);
2285
2286 fail:
2287 HFA384X_OUTW(HFA384X_EV_TX, HFA384X_EVACK_OFF);
2288 }
2289
2290
2291 /* Called only as a tasklet (software IRQ) */
2292 static void hostap_sta_tx_exc_tasklet(unsigned long data)
2293 {
2294 local_info_t *local = (local_info_t *) data;
2295 struct sk_buff *skb;
2296
2297 while ((skb = skb_dequeue(&local->sta_tx_exc_list)) != NULL) {
2298 struct hfa384x_tx_frame *txdesc =
2299 (struct hfa384x_tx_frame *) skb->data;
2300
2301 if (skb->len >= sizeof(*txdesc)) {
2302 /* Convert Prism2 RX structure into IEEE 802.11 header
2303 */
2304 int hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control);
2305 memmove(skb_pull(skb, sizeof(*txdesc) - hdrlen),
2306 &txdesc->frame_control, hdrlen);
2307
2308 hostap_handle_sta_tx_exc(local, skb);
2309 }
2310 dev_kfree_skb(skb);
2311 }
2312 }
2313
2314
2315 /* Called only as a tasklet (software IRQ) */
2316 static void prism2_txexc(local_info_t *local)
2317 {
2318 struct net_device *dev = local->dev;
2319 u16 status, fc;
2320 int show_dump, res;
2321 char *payload = NULL;
2322 struct hfa384x_tx_frame txdesc;
2323
2324 show_dump = local->frame_dump & PRISM2_DUMP_TXEXC_HDR;
2325 dev->stats.tx_errors++;
2326
2327 res = hostap_tx_compl_read(local, 1, &txdesc, &payload);
2328 HFA384X_OUTW(HFA384X_EV_TXEXC, HFA384X_EVACK_OFF);
2329 if (res)
2330 return;
2331
2332 status = le16_to_cpu(txdesc.status);
2333
2334 /* We produce a TXDROP event only for retry or lifetime
2335 * exceeded, because that's the only status that really mean
2336 * that this particular node went away.
2337 * Other errors means that *we* screwed up. - Jean II */
2338 if (status & (HFA384X_TX_STATUS_RETRYERR | HFA384X_TX_STATUS_AGEDERR))
2339 {
2340 union iwreq_data wrqu;
2341
2342 /* Copy 802.11 dest address. */
2343 memcpy(wrqu.addr.sa_data, txdesc.addr1, ETH_ALEN);
2344 wrqu.addr.sa_family = ARPHRD_ETHER;
2345 wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL);
2346 } else
2347 show_dump = 1;
2348
2349 if (local->iw_mode == IW_MODE_MASTER ||
2350 local->iw_mode == IW_MODE_REPEAT ||
2351 local->wds_type & HOSTAP_WDS_AP_CLIENT) {
2352 struct sk_buff *skb;
2353 skb = dev_alloc_skb(sizeof(txdesc));
2354 if (skb) {
2355 memcpy(skb_put(skb, sizeof(txdesc)), &txdesc,
2356 sizeof(txdesc));
2357 skb_queue_tail(&local->sta_tx_exc_list, skb);
2358 tasklet_schedule(&local->sta_tx_exc_tasklet);
2359 }
2360 }
2361
2362 if (txdesc.sw_support)
2363 hostap_tx_callback(local, &txdesc, 0, payload);
2364 kfree(payload);
2365
2366 if (!show_dump)
2367 return;
2368
2369 PDEBUG(DEBUG_EXTRA, "%s: TXEXC - status=0x%04x (%s%s%s%s)"
2370 " tx_control=%04x\n",
2371 dev->name, status,
2372 status & HFA384X_TX_STATUS_RETRYERR ? "[RetryErr]" : "",
2373 status & HFA384X_TX_STATUS_AGEDERR ? "[AgedErr]" : "",
2374 status & HFA384X_TX_STATUS_DISCON ? "[Discon]" : "",
2375 status & HFA384X_TX_STATUS_FORMERR ? "[FormErr]" : "",
2376 le16_to_cpu(txdesc.tx_control));
2377
2378 fc = le16_to_cpu(txdesc.frame_control);
2379 PDEBUG(DEBUG_EXTRA, " retry_count=%d tx_rate=%d fc=0x%04x "
2380 "(%s%s%s::%d%s%s)\n",
2381 txdesc.retry_count, txdesc.tx_rate, fc,
2382 ieee80211_is_mgmt(txdesc.frame_control) ? "Mgmt" : "",
2383 ieee80211_is_ctl(txdesc.frame_control) ? "Ctrl" : "",
2384 ieee80211_is_data(txdesc.frame_control) ? "Data" : "",
2385 (fc & IEEE80211_FCTL_STYPE) >> 4,
2386 ieee80211_has_tods(txdesc.frame_control) ? " ToDS" : "",
2387 ieee80211_has_fromds(txdesc.frame_control) ? " FromDS" : "");
2388 PDEBUG(DEBUG_EXTRA, " A1=%pM A2=%pM A3=%pM A4=%pM\n",
2389 txdesc.addr1, txdesc.addr2,
2390 txdesc.addr3, txdesc.addr4);
2391 }
2392
2393
2394 /* Called only as a tasklet (software IRQ) */
2395 static void hostap_info_tasklet(unsigned long data)
2396 {
2397 local_info_t *local = (local_info_t *) data;
2398 struct sk_buff *skb;
2399
2400 while ((skb = skb_dequeue(&local->info_list)) != NULL) {
2401 hostap_info_process(local, skb);
2402 dev_kfree_skb(skb);
2403 }
2404 }
2405
2406
2407 /* Called only as a tasklet (software IRQ) */
2408 static void prism2_info(local_info_t *local)
2409 {
2410 struct net_device *dev = local->dev;
2411 u16 fid;
2412 int res, left;
2413 struct hfa384x_info_frame info;
2414 struct sk_buff *skb;
2415
2416 fid = HFA384X_INW(HFA384X_INFOFID_OFF);
2417
2418 spin_lock(&local->baplock);
2419 res = hfa384x_setup_bap(dev, BAP0, fid, 0);
2420 if (!res)
2421 res = hfa384x_from_bap(dev, BAP0, &info, sizeof(info));
2422 if (res) {
2423 spin_unlock(&local->baplock);
2424 printk(KERN_DEBUG "Could not get info frame (fid=0x%04x)\n",
2425 fid);
2426 if (res == -ETIMEDOUT) {
2427 schedule_work(&local->reset_queue);
2428 }
2429 goto out;
2430 }
2431
2432 left = (le16_to_cpu(info.len) - 1) * 2;
2433
2434 if (info.len & cpu_to_le16(0x8000) || info.len == 0 || left > 2060) {
2435 /* data register seems to give 0x8000 in some error cases even
2436 * though busy bit is not set in offset register;
2437 * in addition, length must be at least 1 due to type field */
2438 spin_unlock(&local->baplock);
2439 printk(KERN_DEBUG "%s: Received info frame with invalid "
2440 "length 0x%04x (type 0x%04x)\n", dev->name,
2441 le16_to_cpu(info.len), le16_to_cpu(info.type));
2442 goto out;
2443 }
2444
2445 skb = dev_alloc_skb(sizeof(info) + left);
2446 if (skb == NULL) {
2447 spin_unlock(&local->baplock);
2448 printk(KERN_DEBUG "%s: Could not allocate skb for info "
2449 "frame\n", dev->name);
2450 goto out;
2451 }
2452
2453 memcpy(skb_put(skb, sizeof(info)), &info, sizeof(info));
2454 if (left > 0 && hfa384x_from_bap(dev, BAP0, skb_put(skb, left), left))
2455 {
2456 spin_unlock(&local->baplock);
2457 printk(KERN_WARNING "%s: Info frame read failed (fid=0x%04x, "
2458 "len=0x%04x, type=0x%04x\n", dev->name, fid,
2459 le16_to_cpu(info.len), le16_to_cpu(info.type));
2460 dev_kfree_skb(skb);
2461 goto out;
2462 }
2463 spin_unlock(&local->baplock);
2464
2465 skb_queue_tail(&local->info_list, skb);
2466 tasklet_schedule(&local->info_tasklet);
2467
2468 out:
2469 HFA384X_OUTW(HFA384X_EV_INFO, HFA384X_EVACK_OFF);
2470 }
2471
2472
2473 /* Called only as a tasklet (software IRQ) */
2474 static void hostap_bap_tasklet(unsigned long data)
2475 {
2476 local_info_t *local = (local_info_t *) data;
2477 struct net_device *dev = local->dev;
2478 u16 ev;
2479 int frames = 30;
2480
2481 if (local->func->card_present && !local->func->card_present(local))
2482 return;
2483
2484 set_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits);
2485
2486 /* Process all pending BAP events without generating new interrupts
2487 * for them */
2488 while (frames-- > 0) {
2489 ev = HFA384X_INW(HFA384X_EVSTAT_OFF);
2490 if (ev == 0xffff || !(ev & HFA384X_BAP0_EVENTS))
2491 break;
2492 if (ev & HFA384X_EV_RX)
2493 prism2_rx(local);
2494 if (ev & HFA384X_EV_INFO)
2495 prism2_info(local);
2496 if (ev & HFA384X_EV_TX)
2497 prism2_tx_ev(local);
2498 if (ev & HFA384X_EV_TXEXC)
2499 prism2_txexc(local);
2500 }
2501
2502 set_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits);
2503 clear_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits);
2504
2505 /* Enable interrupts for new BAP events */
2506 hfa384x_events_all(dev);
2507 clear_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits);
2508 }
2509
2510
2511 /* Called only from hardware IRQ */
2512 static void prism2_infdrop(struct net_device *dev)
2513 {
2514 static unsigned long last_inquire = 0;
2515
2516 PDEBUG(DEBUG_EXTRA, "%s: INFDROP event\n", dev->name);
2517
2518 /* some firmware versions seem to get stuck with
2519 * full CommTallies in high traffic load cases; every
2520 * packet will then cause INFDROP event and CommTallies
2521 * info frame will not be sent automatically. Try to
2522 * get out of this state by inquiring CommTallies. */
2523 if (!last_inquire || time_after(jiffies, last_inquire + HZ)) {
2524 hfa384x_cmd_callback(dev, HFA384X_CMDCODE_INQUIRE,
2525 HFA384X_INFO_COMMTALLIES, NULL, 0);
2526 last_inquire = jiffies;
2527 }
2528 }
2529
2530
2531 /* Called only from hardware IRQ */
2532 static void prism2_ev_tick(struct net_device *dev)
2533 {
2534 struct hostap_interface *iface;
2535 local_info_t *local;
2536 u16 evstat, inten;
2537 static int prev_stuck = 0;
2538
2539 iface = netdev_priv(dev);
2540 local = iface->local;
2541
2542 if (time_after(jiffies, local->last_tick_timer + 5 * HZ) &&
2543 local->last_tick_timer) {
2544 evstat = HFA384X_INW(HFA384X_EVSTAT_OFF);
2545 inten = HFA384X_INW(HFA384X_INTEN_OFF);
2546 if (!prev_stuck) {
2547 printk(KERN_INFO "%s: SW TICK stuck? "
2548 "bits=0x%lx EvStat=%04x IntEn=%04x\n",
2549 dev->name, local->bits, evstat, inten);
2550 }
2551 local->sw_tick_stuck++;
2552 if ((evstat & HFA384X_BAP0_EVENTS) &&
2553 (inten & HFA384X_BAP0_EVENTS)) {
2554 printk(KERN_INFO "%s: trying to recover from IRQ "
2555 "hang\n", dev->name);
2556 hfa384x_events_no_bap0(dev);
2557 }
2558 prev_stuck = 1;
2559 } else
2560 prev_stuck = 0;
2561 }
2562
2563
2564 /* Called only from hardware IRQ */
2565 static void prism2_check_magic(local_info_t *local)
2566 {
2567 /* at least PCI Prism2.5 with bus mastering seems to sometimes
2568 * return 0x0000 in SWSUPPORT0 for unknown reason, but re-reading the
2569 * register once or twice seems to get the correct value.. PCI cards
2570 * cannot anyway be removed during normal operation, so there is not
2571 * really any need for this verification with them. */
2572
2573 #ifndef PRISM2_PCI
2574 #ifndef final_version
2575 static unsigned long last_magic_err = 0;
2576 struct net_device *dev = local->dev;
2577
2578 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) {
2579 if (!local->hw_ready)
2580 return;
2581 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
2582 if (time_after(jiffies, last_magic_err + 10 * HZ)) {
2583 printk("%s: Interrupt, but SWSUPPORT0 does not match: "
2584 "%04X != %04X - card removed?\n", dev->name,
2585 HFA384X_INW(HFA384X_SWSUPPORT0_OFF),
2586 HFA384X_MAGIC);
2587 last_magic_err = jiffies;
2588 } else if (net_ratelimit()) {
2589 printk(KERN_DEBUG "%s: interrupt - SWSUPPORT0=%04x "
2590 "MAGIC=%04x\n", dev->name,
2591 HFA384X_INW(HFA384X_SWSUPPORT0_OFF),
2592 HFA384X_MAGIC);
2593 }
2594 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != 0xffff)
2595 schedule_work(&local->reset_queue);
2596 return;
2597 }
2598 #endif /* final_version */
2599 #endif /* !PRISM2_PCI */
2600 }
2601
2602
2603 /* Called only from hardware IRQ */
2604 static irqreturn_t prism2_interrupt(int irq, void *dev_id)
2605 {
2606 struct net_device *dev = dev_id;
2607 struct hostap_interface *iface;
2608 local_info_t *local;
2609 int events = 0;
2610 u16 ev;
2611
2612 iface = netdev_priv(dev);
2613 local = iface->local;
2614
2615 /* Detect early interrupt before driver is fully configued */
2616 spin_lock(&local->irq_init_lock);
2617 if (!dev->base_addr) {
2618 if (net_ratelimit()) {
2619 printk(KERN_DEBUG "%s: Interrupt, but dev not configured\n",
2620 dev->name);
2621 }
2622 spin_unlock(&local->irq_init_lock);
2623 return IRQ_HANDLED;
2624 }
2625 spin_unlock(&local->irq_init_lock);
2626
2627 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 0);
2628
2629 if (local->func->card_present && !local->func->card_present(local)) {
2630 if (net_ratelimit()) {
2631 printk(KERN_DEBUG "%s: Interrupt, but dev not OK\n",
2632 dev->name);
2633 }
2634 return IRQ_HANDLED;
2635 }
2636
2637 prism2_check_magic(local);
2638
2639 for (;;) {
2640 ev = HFA384X_INW(HFA384X_EVSTAT_OFF);
2641 if (ev == 0xffff) {
2642 if (local->shutdown)
2643 return IRQ_HANDLED;
2644 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
2645 printk(KERN_DEBUG "%s: prism2_interrupt: ev=0xffff\n",
2646 dev->name);
2647 return IRQ_HANDLED;
2648 }
2649
2650 ev &= HFA384X_INW(HFA384X_INTEN_OFF);
2651 if (ev == 0)
2652 break;
2653
2654 if (ev & HFA384X_EV_CMD) {
2655 prism2_cmd_ev(dev);
2656 }
2657
2658 /* Above events are needed even before hw is ready, but other
2659 * events should be skipped during initialization. This may
2660 * change for AllocEv if allocate_fid is implemented without
2661 * busy waiting. */
2662 if (!local->hw_ready || local->hw_resetting ||
2663 !local->dev_enabled) {
2664 ev = HFA384X_INW(HFA384X_EVSTAT_OFF);
2665 if (ev & HFA384X_EV_CMD)
2666 goto next_event;
2667 if ((ev & HFA384X_EVENT_MASK) == 0)
2668 return IRQ_HANDLED;
2669 if (local->dev_enabled && (ev & ~HFA384X_EV_TICK) &&
2670 net_ratelimit()) {
2671 printk(KERN_DEBUG "%s: prism2_interrupt: hw "
2672 "not ready; skipping events 0x%04x "
2673 "(IntEn=0x%04x)%s%s%s\n",
2674 dev->name, ev,
2675 HFA384X_INW(HFA384X_INTEN_OFF),
2676 !local->hw_ready ? " (!hw_ready)" : "",
2677 local->hw_resetting ?
2678 " (hw_resetting)" : "",
2679 !local->dev_enabled ?
2680 " (!dev_enabled)" : "");
2681 }
2682 HFA384X_OUTW(ev, HFA384X_EVACK_OFF);
2683 return IRQ_HANDLED;
2684 }
2685
2686 if (ev & HFA384X_EV_TICK) {
2687 prism2_ev_tick(dev);
2688 HFA384X_OUTW(HFA384X_EV_TICK, HFA384X_EVACK_OFF);
2689 }
2690
2691 if (ev & HFA384X_EV_ALLOC) {
2692 prism2_alloc_ev(dev);
2693 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF);
2694 }
2695
2696 /* Reading data from the card is quite time consuming, so do it
2697 * in tasklets. TX, TXEXC, RX, and INFO events will be ACKed
2698 * and unmasked after needed data has been read completely. */
2699 if (ev & HFA384X_BAP0_EVENTS) {
2700 hfa384x_events_no_bap0(dev);
2701 tasklet_schedule(&local->bap_tasklet);
2702 }
2703
2704 #ifndef final_version
2705 if (ev & HFA384X_EV_WTERR) {
2706 PDEBUG(DEBUG_EXTRA, "%s: WTERR event\n", dev->name);
2707 HFA384X_OUTW(HFA384X_EV_WTERR, HFA384X_EVACK_OFF);
2708 }
2709 #endif /* final_version */
2710
2711 if (ev & HFA384X_EV_INFDROP) {
2712 prism2_infdrop(dev);
2713 HFA384X_OUTW(HFA384X_EV_INFDROP, HFA384X_EVACK_OFF);
2714 }
2715
2716 next_event:
2717 events++;
2718 if (events >= PRISM2_MAX_INTERRUPT_EVENTS) {
2719 PDEBUG(DEBUG_EXTRA, "prism2_interrupt: >%d events "
2720 "(EvStat=0x%04x)\n",
2721 PRISM2_MAX_INTERRUPT_EVENTS,
2722 HFA384X_INW(HFA384X_EVSTAT_OFF));
2723 break;
2724 }
2725 }
2726 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 1);
2727 return IRQ_RETVAL(events);
2728 }
2729
2730
2731 static void prism2_check_sta_fw_version(local_info_t *local)
2732 {
2733 struct hfa384x_comp_ident comp;
2734 int id, variant, major, minor;
2735
2736 if (hfa384x_get_rid(local->dev, HFA384X_RID_STAID,
2737 &comp, sizeof(comp), 1) < 0)
2738 return;
2739
2740 local->fw_ap = 0;
2741 id = le16_to_cpu(comp.id);
2742 if (id != HFA384X_COMP_ID_STA) {
2743 if (id == HFA384X_COMP_ID_FW_AP)
2744 local->fw_ap = 1;
2745 return;
2746 }
2747
2748 major = __le16_to_cpu(comp.major);
2749 minor = __le16_to_cpu(comp.minor);
2750 variant = __le16_to_cpu(comp.variant);
2751 local->sta_fw_ver = PRISM2_FW_VER(major, minor, variant);
2752
2753 /* Station firmware versions before 1.4.x seem to have a bug in
2754 * firmware-based WEP encryption when using Host AP mode, so use
2755 * host_encrypt as a default for them. Firmware version 1.4.9 is the
2756 * first one that has been seen to produce correct encryption, but the
2757 * bug might be fixed before that (although, at least 1.4.2 is broken).
2758 */
2759 local->fw_encrypt_ok = local->sta_fw_ver >= PRISM2_FW_VER(1,4,9);
2760
2761 if (local->iw_mode == IW_MODE_MASTER && !local->host_encrypt &&
2762 !local->fw_encrypt_ok) {
2763 printk(KERN_DEBUG "%s: defaulting to host-based encryption as "
2764 "a workaround for firmware bug in Host AP mode WEP\n",
2765 local->dev->name);
2766 local->host_encrypt = 1;
2767 }
2768
2769 if (local->sta_fw_ver >= PRISM2_FW_VER(1,5,0))
2770 local->wds_type |= HOSTAP_WDS_STANDARD_FRAME;
2771 else {
2772 printk(KERN_DEBUG "%s: defaulting to bogus WDS frame as a "
2773 "workaround for firmware bug in Host AP mode WDS\n",
2774 local->dev->name);
2775 }
2776
2777 hostap_check_sta_fw_version(local->ap, local->sta_fw_ver);
2778 }
2779
2780
2781 static void hostap_passive_scan(unsigned long data)
2782 {
2783 local_info_t *local = (local_info_t *) data;
2784 struct net_device *dev = local->dev;
2785 u16 chan;
2786
2787 if (local->passive_scan_interval <= 0)
2788 return;
2789
2790 if (local->passive_scan_state == PASSIVE_SCAN_LISTEN) {
2791 int max_tries = 16;
2792
2793 /* Even though host system does not really know when the WLAN
2794 * MAC is sending frames, try to avoid changing channels for
2795 * passive scanning when a host-generated frame is being
2796 * transmitted */
2797 if (test_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
2798 printk(KERN_DEBUG "%s: passive scan detected pending "
2799 "TX - delaying\n", dev->name);
2800 local->passive_scan_timer.expires = jiffies + HZ / 10;
2801 add_timer(&local->passive_scan_timer);
2802 return;
2803 }
2804
2805 do {
2806 local->passive_scan_channel++;
2807 if (local->passive_scan_channel > 14)
2808 local->passive_scan_channel = 1;
2809 max_tries--;
2810 } while (!(local->channel_mask &
2811 (1 << (local->passive_scan_channel - 1))) &&
2812 max_tries > 0);
2813
2814 if (max_tries == 0) {
2815 printk(KERN_INFO "%s: no allowed passive scan channels"
2816 " found\n", dev->name);
2817 return;
2818 }
2819
2820 printk(KERN_DEBUG "%s: passive scan channel %d\n",
2821 dev->name, local->passive_scan_channel);
2822 chan = local->passive_scan_channel;
2823 local->passive_scan_state = PASSIVE_SCAN_WAIT;
2824 local->passive_scan_timer.expires = jiffies + HZ / 10;
2825 } else {
2826 chan = local->channel;
2827 local->passive_scan_state = PASSIVE_SCAN_LISTEN;
2828 local->passive_scan_timer.expires = jiffies +
2829 local->passive_scan_interval * HZ;
2830 }
2831
2832 if (hfa384x_cmd_callback(dev, HFA384X_CMDCODE_TEST |
2833 (HFA384X_TEST_CHANGE_CHANNEL << 8),
2834 chan, NULL, 0))
2835 printk(KERN_ERR "%s: passive scan channel set %d "
2836 "failed\n", dev->name, chan);
2837
2838 add_timer(&local->passive_scan_timer);
2839 }
2840
2841
2842 /* Called only as a scheduled task when communications quality values should
2843 * be updated. */
2844 static void handle_comms_qual_update(struct work_struct *work)
2845 {
2846 local_info_t *local =
2847 container_of(work, local_info_t, comms_qual_update);
2848 prism2_update_comms_qual(local->dev);
2849 }
2850
2851
2852 /* Software watchdog - called as a timer. Hardware interrupt (Tick event) is
2853 * used to monitor that local->last_tick_timer is being updated. If not,
2854 * interrupt busy-loop is assumed and driver tries to recover by masking out
2855 * some events. */
2856 static void hostap_tick_timer(unsigned long data)
2857 {
2858 static unsigned long last_inquire = 0;
2859 local_info_t *local = (local_info_t *) data;
2860 local->last_tick_timer = jiffies;
2861
2862 /* Inquire CommTallies every 10 seconds to keep the statistics updated
2863 * more often during low load and when using 32-bit tallies. */
2864 if ((!last_inquire || time_after(jiffies, last_inquire + 10 * HZ)) &&
2865 !local->hw_downloading && local->hw_ready &&
2866 !local->hw_resetting && local->dev_enabled) {
2867 hfa384x_cmd_callback(local->dev, HFA384X_CMDCODE_INQUIRE,
2868 HFA384X_INFO_COMMTALLIES, NULL, 0);
2869 last_inquire = jiffies;
2870 }
2871
2872 if ((local->last_comms_qual_update == 0 ||
2873 time_after(jiffies, local->last_comms_qual_update + 10 * HZ)) &&
2874 (local->iw_mode == IW_MODE_INFRA ||
2875 local->iw_mode == IW_MODE_ADHOC)) {
2876 schedule_work(&local->comms_qual_update);
2877 }
2878
2879 local->tick_timer.expires = jiffies + 2 * HZ;
2880 add_timer(&local->tick_timer);
2881 }
2882
2883
2884 #ifndef PRISM2_NO_PROCFS_DEBUG
2885 static int prism2_registers_proc_read(char *page, char **start, off_t off,
2886 int count, int *eof, void *data)
2887 {
2888 char *p = page;
2889 local_info_t *local = (local_info_t *) data;
2890
2891 if (off != 0) {
2892 *eof = 1;
2893 return 0;
2894 }
2895
2896 #define SHOW_REG(n) \
2897 p += sprintf(p, #n "=%04x\n", hfa384x_read_reg(local->dev, HFA384X_##n##_OFF))
2898
2899 SHOW_REG(CMD);
2900 SHOW_REG(PARAM0);
2901 SHOW_REG(PARAM1);
2902 SHOW_REG(PARAM2);
2903 SHOW_REG(STATUS);
2904 SHOW_REG(RESP0);
2905 SHOW_REG(RESP1);
2906 SHOW_REG(RESP2);
2907 SHOW_REG(INFOFID);
2908 SHOW_REG(CONTROL);
2909 SHOW_REG(SELECT0);
2910 SHOW_REG(SELECT1);
2911 SHOW_REG(OFFSET0);
2912 SHOW_REG(OFFSET1);
2913 SHOW_REG(RXFID);
2914 SHOW_REG(ALLOCFID);
2915 SHOW_REG(TXCOMPLFID);
2916 SHOW_REG(SWSUPPORT0);
2917 SHOW_REG(SWSUPPORT1);
2918 SHOW_REG(SWSUPPORT2);
2919 SHOW_REG(EVSTAT);
2920 SHOW_REG(INTEN);
2921 SHOW_REG(EVACK);
2922 /* Do not read data registers, because they change the state of the
2923 * MAC (offset += 2) */
2924 /* SHOW_REG(DATA0); */
2925 /* SHOW_REG(DATA1); */
2926 SHOW_REG(AUXPAGE);
2927 SHOW_REG(AUXOFFSET);
2928 /* SHOW_REG(AUXDATA); */
2929 #ifdef PRISM2_PCI
2930 SHOW_REG(PCICOR);
2931 SHOW_REG(PCIHCR);
2932 SHOW_REG(PCI_M0_ADDRH);
2933 SHOW_REG(PCI_M0_ADDRL);
2934 SHOW_REG(PCI_M0_LEN);
2935 SHOW_REG(PCI_M0_CTL);
2936 SHOW_REG(PCI_STATUS);
2937 SHOW_REG(PCI_M1_ADDRH);
2938 SHOW_REG(PCI_M1_ADDRL);
2939 SHOW_REG(PCI_M1_LEN);
2940 SHOW_REG(PCI_M1_CTL);
2941 #endif /* PRISM2_PCI */
2942
2943 return (p - page);
2944 }
2945 #endif /* PRISM2_NO_PROCFS_DEBUG */
2946
2947
2948 struct set_tim_data {
2949 struct list_head list;
2950 int aid;
2951 int set;
2952 };
2953
2954 static int prism2_set_tim(struct net_device *dev, int aid, int set)
2955 {
2956 struct list_head *ptr;
2957 struct set_tim_data *new_entry;
2958 struct hostap_interface *iface;
2959 local_info_t *local;
2960
2961 iface = netdev_priv(dev);
2962 local = iface->local;
2963
2964 new_entry = kzalloc(sizeof(*new_entry), GFP_ATOMIC);
2965 if (new_entry == NULL) {
2966 printk(KERN_DEBUG "%s: prism2_set_tim: kmalloc failed\n",
2967 local->dev->name);
2968 return -ENOMEM;
2969 }
2970 new_entry->aid = aid;
2971 new_entry->set = set;
2972
2973 spin_lock_bh(&local->set_tim_lock);
2974 list_for_each(ptr, &local->set_tim_list) {
2975 struct set_tim_data *entry =
2976 list_entry(ptr, struct set_tim_data, list);
2977 if (entry->aid == aid) {
2978 PDEBUG(DEBUG_PS2, "%s: prism2_set_tim: aid=%d "
2979 "set=%d ==> %d\n",
2980 local->dev->name, aid, entry->set, set);
2981 entry->set = set;
2982 kfree(new_entry);
2983 new_entry = NULL;
2984 break;
2985 }
2986 }
2987 if (new_entry)
2988 list_add_tail(&new_entry->list, &local->set_tim_list);
2989 spin_unlock_bh(&local->set_tim_lock);
2990
2991 schedule_work(&local->set_tim_queue);
2992
2993 return 0;
2994 }
2995
2996
2997 static void handle_set_tim_queue(struct work_struct *work)
2998 {
2999 local_info_t *local = container_of(work, local_info_t, set_tim_queue);
3000 struct set_tim_data *entry;
3001 u16 val;
3002
3003 for (;;) {
3004 entry = NULL;
3005 spin_lock_bh(&local->set_tim_lock);
3006 if (!list_empty(&local->set_tim_list)) {
3007 entry = list_entry(local->set_tim_list.next,
3008 struct set_tim_data, list);
3009 list_del(&entry->list);
3010 }
3011 spin_unlock_bh(&local->set_tim_lock);
3012 if (!entry)
3013 break;
3014
3015 PDEBUG(DEBUG_PS2, "%s: handle_set_tim_queue: aid=%d set=%d\n",
3016 local->dev->name, entry->aid, entry->set);
3017
3018 val = entry->aid;
3019 if (entry->set)
3020 val |= 0x8000;
3021 if (hostap_set_word(local->dev, HFA384X_RID_CNFTIMCTRL, val)) {
3022 printk(KERN_DEBUG "%s: set_tim failed (aid=%d "
3023 "set=%d)\n",
3024 local->dev->name, entry->aid, entry->set);
3025 }
3026
3027 kfree(entry);
3028 }
3029 }
3030
3031
3032 static void prism2_clear_set_tim_queue(local_info_t *local)
3033 {
3034 struct list_head *ptr, *n;
3035
3036 list_for_each_safe(ptr, n, &local->set_tim_list) {
3037 struct set_tim_data *entry;
3038 entry = list_entry(ptr, struct set_tim_data, list);
3039 list_del(&entry->list);
3040 kfree(entry);
3041 }
3042 }
3043
3044
3045 /*
3046 * HostAP uses two layers of net devices, where the inner
3047 * layer gets called all the time from the outer layer.
3048 * This is a natural nesting, which needs a split lock type.
3049 */
3050 static struct lock_class_key hostap_netdev_xmit_lock_key;
3051 static struct lock_class_key hostap_netdev_addr_lock_key;
3052
3053 static void prism2_set_lockdep_class_one(struct net_device *dev,
3054 struct netdev_queue *txq,
3055 void *_unused)
3056 {
3057 lockdep_set_class(&txq->_xmit_lock,
3058 &hostap_netdev_xmit_lock_key);
3059 }
3060
3061 static void prism2_set_lockdep_class(struct net_device *dev)
3062 {
3063 lockdep_set_class(&dev->addr_list_lock,
3064 &hostap_netdev_addr_lock_key);
3065 netdev_for_each_tx_queue(dev, prism2_set_lockdep_class_one, NULL);
3066 }
3067
3068 static struct net_device *
3069 prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx,
3070 struct device *sdev)
3071 {
3072 struct net_device *dev;
3073 struct hostap_interface *iface;
3074 struct local_info *local;
3075 int len, i, ret;
3076
3077 if (funcs == NULL)
3078 return NULL;
3079
3080 len = strlen(dev_template);
3081 if (len >= IFNAMSIZ || strstr(dev_template, "%d") == NULL) {
3082 printk(KERN_WARNING "hostap: Invalid dev_template='%s'\n",
3083 dev_template);
3084 return NULL;
3085 }
3086
3087 len = sizeof(struct hostap_interface) +
3088 3 + sizeof(struct local_info) +
3089 3 + sizeof(struct ap_data);
3090
3091 dev = alloc_etherdev(len);
3092 if (dev == NULL)
3093 return NULL;
3094
3095 iface = netdev_priv(dev);
3096 local = (struct local_info *) ((((long) (iface + 1)) + 3) & ~3);
3097 local->ap = (struct ap_data *) ((((long) (local + 1)) + 3) & ~3);
3098 local->dev = iface->dev = dev;
3099 iface->local = local;
3100 iface->type = HOSTAP_INTERFACE_MASTER;
3101 INIT_LIST_HEAD(&local->hostap_interfaces);
3102
3103 local->hw_module = THIS_MODULE;
3104
3105 #ifdef PRISM2_IO_DEBUG
3106 local->io_debug_enabled = 1;
3107 #endif /* PRISM2_IO_DEBUG */
3108
3109 local->func = funcs;
3110 local->func->cmd = hfa384x_cmd;
3111 local->func->read_regs = hfa384x_read_regs;
3112 local->func->get_rid = hfa384x_get_rid;
3113 local->func->set_rid = hfa384x_set_rid;
3114 local->func->hw_enable = prism2_hw_enable;
3115 local->func->hw_config = prism2_hw_config;
3116 local->func->hw_reset = prism2_hw_reset;
3117 local->func->hw_shutdown = prism2_hw_shutdown;
3118 local->func->reset_port = prism2_reset_port;
3119 local->func->schedule_reset = prism2_schedule_reset;
3120 #ifdef PRISM2_DOWNLOAD_SUPPORT
3121 local->func->read_aux = prism2_download_aux_dump;
3122 local->func->download = prism2_download;
3123 #endif /* PRISM2_DOWNLOAD_SUPPORT */
3124 local->func->tx = prism2_tx_80211;
3125 local->func->set_tim = prism2_set_tim;
3126 local->func->need_tx_headroom = 0; /* no need to add txdesc in
3127 * skb->data (FIX: maybe for DMA bus
3128 * mastering? */
3129
3130 local->mtu = mtu;
3131
3132 rwlock_init(&local->iface_lock);
3133 spin_lock_init(&local->txfidlock);
3134 spin_lock_init(&local->cmdlock);
3135 spin_lock_init(&local->baplock);
3136 spin_lock_init(&local->lock);
3137 spin_lock_init(&local->irq_init_lock);
3138 mutex_init(&local->rid_bap_mtx);
3139
3140 if (card_idx < 0 || card_idx >= MAX_PARM_DEVICES)
3141 card_idx = 0;
3142 local->card_idx = card_idx;
3143
3144 len = strlen(essid);
3145 memcpy(local->essid, essid,
3146 len > MAX_SSID_LEN ? MAX_SSID_LEN : len);
3147 local->essid[MAX_SSID_LEN] = '\0';
3148 i = GET_INT_PARM(iw_mode, card_idx);
3149 if ((i >= IW_MODE_ADHOC && i <= IW_MODE_REPEAT) ||
3150 i == IW_MODE_MONITOR) {
3151 local->iw_mode = i;
3152 } else {
3153 printk(KERN_WARNING "prism2: Unknown iw_mode %d; using "
3154 "IW_MODE_MASTER\n", i);
3155 local->iw_mode = IW_MODE_MASTER;
3156 }
3157 local->channel = GET_INT_PARM(channel, card_idx);
3158 local->beacon_int = GET_INT_PARM(beacon_int, card_idx);
3159 local->dtim_period = GET_INT_PARM(dtim_period, card_idx);
3160 local->wds_max_connections = 16;
3161 local->tx_control = HFA384X_TX_CTRL_FLAGS;
3162 local->manual_retry_count = -1;
3163 local->rts_threshold = 2347;
3164 local->fragm_threshold = 2346;
3165 local->rssi_to_dBm = 100; /* default; to be overriden by
3166 * cnfDbmAdjust, if available */
3167 local->auth_algs = PRISM2_AUTH_OPEN | PRISM2_AUTH_SHARED_KEY;
3168 local->sram_type = -1;
3169 local->scan_channel_mask = 0xffff;
3170 local->monitor_type = PRISM2_MONITOR_RADIOTAP;
3171
3172 /* Initialize task queue structures */
3173 INIT_WORK(&local->reset_queue, handle_reset_queue);
3174 INIT_WORK(&local->set_multicast_list_queue,
3175 hostap_set_multicast_list_queue);
3176
3177 INIT_WORK(&local->set_tim_queue, handle_set_tim_queue);
3178 INIT_LIST_HEAD(&local->set_tim_list);
3179 spin_lock_init(&local->set_tim_lock);
3180
3181 INIT_WORK(&local->comms_qual_update, handle_comms_qual_update);
3182
3183 /* Initialize tasklets for handling hardware IRQ related operations
3184 * outside hw IRQ handler */
3185 #define HOSTAP_TASKLET_INIT(q, f, d) \
3186 do { memset((q), 0, sizeof(*(q))); (q)->func = (f); (q)->data = (d); } \
3187 while (0)
3188 HOSTAP_TASKLET_INIT(&local->bap_tasklet, hostap_bap_tasklet,
3189 (unsigned long) local);
3190
3191 HOSTAP_TASKLET_INIT(&local->info_tasklet, hostap_info_tasklet,
3192 (unsigned long) local);
3193 hostap_info_init(local);
3194
3195 HOSTAP_TASKLET_INIT(&local->rx_tasklet,
3196 hostap_rx_tasklet, (unsigned long) local);
3197 skb_queue_head_init(&local->rx_list);
3198
3199 HOSTAP_TASKLET_INIT(&local->sta_tx_exc_tasklet,
3200 hostap_sta_tx_exc_tasklet, (unsigned long) local);
3201 skb_queue_head_init(&local->sta_tx_exc_list);
3202
3203 INIT_LIST_HEAD(&local->cmd_queue);
3204 init_waitqueue_head(&local->hostscan_wq);
3205
3206 lib80211_crypt_info_init(&local->crypt_info, dev->name, &local->lock);
3207
3208 init_timer(&local->passive_scan_timer);
3209 local->passive_scan_timer.data = (unsigned long) local;
3210 local->passive_scan_timer.function = hostap_passive_scan;
3211
3212 init_timer(&local->tick_timer);
3213 local->tick_timer.data = (unsigned long) local;
3214 local->tick_timer.function = hostap_tick_timer;
3215 local->tick_timer.expires = jiffies + 2 * HZ;
3216 add_timer(&local->tick_timer);
3217
3218 INIT_LIST_HEAD(&local->bss_list);
3219
3220 hostap_setup_dev(dev, local, HOSTAP_INTERFACE_MASTER);
3221
3222 dev->type = ARPHRD_IEEE80211;
3223 dev->header_ops = &hostap_80211_ops;
3224
3225 rtnl_lock();
3226 ret = dev_alloc_name(dev, "wifi%d");
3227 SET_NETDEV_DEV(dev, sdev);
3228 if (ret >= 0)
3229 ret = register_netdevice(dev);
3230
3231 prism2_set_lockdep_class(dev);
3232 rtnl_unlock();
3233 if (ret < 0) {
3234 printk(KERN_WARNING "%s: register netdevice failed!\n",
3235 dev_info);
3236 goto fail;
3237 }
3238 printk(KERN_INFO "%s: Registered netdevice %s\n", dev_info, dev->name);
3239
3240 hostap_init_data(local);
3241 return dev;
3242
3243 fail:
3244 free_netdev(dev);
3245 return NULL;
3246 }
3247
3248
3249 static int hostap_hw_ready(struct net_device *dev)
3250 {
3251 struct hostap_interface *iface;
3252 struct local_info *local;
3253
3254 iface = netdev_priv(dev);
3255 local = iface->local;
3256 local->ddev = hostap_add_interface(local, HOSTAP_INTERFACE_MAIN, 0,
3257 "", dev_template);
3258
3259 if (local->ddev) {
3260 if (local->iw_mode == IW_MODE_INFRA ||
3261 local->iw_mode == IW_MODE_ADHOC) {
3262 netif_carrier_off(local->dev);
3263 netif_carrier_off(local->ddev);
3264 }
3265 hostap_init_proc(local);
3266 #ifndef PRISM2_NO_PROCFS_DEBUG
3267 create_proc_read_entry("registers", 0, local->proc,
3268 prism2_registers_proc_read, local);
3269 #endif /* PRISM2_NO_PROCFS_DEBUG */
3270 hostap_init_ap_proc(local);
3271 return 0;
3272 }
3273
3274 return -1;
3275 }
3276
3277
3278 static void prism2_free_local_data(struct net_device *dev)
3279 {
3280 struct hostap_tx_callback_info *tx_cb, *tx_cb_prev;
3281 int i;
3282 struct hostap_interface *iface;
3283 struct local_info *local;
3284 struct list_head *ptr, *n;
3285
3286 if (dev == NULL)
3287 return;
3288
3289 iface = netdev_priv(dev);
3290 local = iface->local;
3291
3292 /* Unregister all netdevs before freeing local data. */
3293 list_for_each_safe(ptr, n, &local->hostap_interfaces) {
3294 iface = list_entry(ptr, struct hostap_interface, list);
3295 if (iface->type == HOSTAP_INTERFACE_MASTER) {
3296 /* special handling for this interface below */
3297 continue;
3298 }
3299 hostap_remove_interface(iface->dev, 0, 1);
3300 }
3301
3302 unregister_netdev(local->dev);
3303
3304 flush_scheduled_work();
3305
3306 lib80211_crypt_info_free(&local->crypt_info);
3307
3308 if (timer_pending(&local->passive_scan_timer))
3309 del_timer(&local->passive_scan_timer);
3310
3311 if (timer_pending(&local->tick_timer))
3312 del_timer(&local->tick_timer);
3313
3314 prism2_clear_cmd_queue(local);
3315
3316 skb_queue_purge(&local->info_list);
3317 skb_queue_purge(&local->rx_list);
3318 skb_queue_purge(&local->sta_tx_exc_list);
3319
3320 if (local->dev_enabled)
3321 prism2_callback(local, PRISM2_CALLBACK_DISABLE);
3322
3323 if (local->ap != NULL)
3324 hostap_free_data(local->ap);
3325
3326 #ifndef PRISM2_NO_PROCFS_DEBUG
3327 if (local->proc != NULL)
3328 remove_proc_entry("registers", local->proc);
3329 #endif /* PRISM2_NO_PROCFS_DEBUG */
3330 hostap_remove_proc(local);
3331
3332 tx_cb = local->tx_callback;
3333 while (tx_cb != NULL) {
3334 tx_cb_prev = tx_cb;
3335 tx_cb = tx_cb->next;
3336 kfree(tx_cb_prev);
3337 }
3338
3339 hostap_set_hostapd(local, 0, 0);
3340 hostap_set_hostapd_sta(local, 0, 0);
3341
3342 for (i = 0; i < PRISM2_FRAG_CACHE_LEN; i++) {
3343 if (local->frag_cache[i].skb != NULL)
3344 dev_kfree_skb(local->frag_cache[i].skb);
3345 }
3346
3347 #ifdef PRISM2_DOWNLOAD_SUPPORT
3348 prism2_download_free_data(local->dl_pri);
3349 prism2_download_free_data(local->dl_sec);
3350 #endif /* PRISM2_DOWNLOAD_SUPPORT */
3351
3352 prism2_clear_set_tim_queue(local);
3353
3354 list_for_each_safe(ptr, n, &local->bss_list) {
3355 struct hostap_bss_info *bss =
3356 list_entry(ptr, struct hostap_bss_info, list);
3357 kfree(bss);
3358 }
3359
3360 kfree(local->pda);
3361 kfree(local->last_scan_results);
3362 kfree(local->generic_elem);
3363
3364 free_netdev(local->dev);
3365 }
3366
3367
3368 #if (defined(PRISM2_PCI) && defined(CONFIG_PM)) || defined(PRISM2_PCCARD)
3369 static void prism2_suspend(struct net_device *dev)
3370 {
3371 struct hostap_interface *iface;
3372 struct local_info *local;
3373 union iwreq_data wrqu;
3374
3375 iface = netdev_priv(dev);
3376 local = iface->local;
3377
3378 /* Send disconnect event, e.g., to trigger reassociation after resume
3379 * if wpa_supplicant is used. */
3380 memset(&wrqu, 0, sizeof(wrqu));
3381 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3382 wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL);
3383
3384 /* Disable hardware and firmware */
3385 prism2_hw_shutdown(dev, 0);
3386 }
3387 #endif /* (PRISM2_PCI && CONFIG_PM) || PRISM2_PCCARD */
3388
3389
3390 /* These might at some point be compiled separately and used as separate
3391 * kernel modules or linked into one */
3392 #ifdef PRISM2_DOWNLOAD_SUPPORT
3393 #include "hostap_download.c"
3394 #endif /* PRISM2_DOWNLOAD_SUPPORT */
3395
3396 #ifdef PRISM2_CALLBACK
3397 /* External hostap_callback.c file can be used to, e.g., blink activity led.
3398 * This can use platform specific code and must define prism2_callback()
3399 * function (if PRISM2_CALLBACK is not defined, these function calls are not
3400 * used. */
3401 #include "hostap_callback.c"
3402 #endif /* PRISM2_CALLBACK */
Tomato firmware and modifications.