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Merge tag 'v3.3.7' into 3.3/master
[zen-stable.git] / drivers / net / wireless / hostap / hostap_hw.c
blob1e13d2a0b1306e38bbb30c1d5e52066b254c6264
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 hostap_restore_power(dev);
936 return res;
937 }
938
939
940 static void hfa384x_disable_interrupts(struct net_device *dev)
941 {
942 /* disable interrupts and clear event status */
943 HFA384X_OUTW(0, HFA384X_INTEN_OFF);
944 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
945 }
946
947
948 static void hfa384x_enable_interrupts(struct net_device *dev)
949 {
950 /* ack pending events and enable interrupts from selected events */
951 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
952 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF);
953 }
954
955
956 static void hfa384x_events_no_bap0(struct net_device *dev)
957 {
958 HFA384X_OUTW(HFA384X_EVENT_MASK & ~HFA384X_BAP0_EVENTS,
959 HFA384X_INTEN_OFF);
960 }
961
962
963 static void hfa384x_events_all(struct net_device *dev)
964 {
965 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF);
966 }
967
968
969 static void hfa384x_events_only_cmd(struct net_device *dev)
970 {
971 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_INTEN_OFF);
972 }
973
974
975 static u16 hfa384x_allocate_fid(struct net_device *dev, int len)
976 {
977 u16 fid;
978 unsigned long delay;
979
980 /* FIX: this could be replace with hfa384x_cmd() if the Alloc event
981 * below would be handled like CmdCompl event (sleep here, wake up from
982 * interrupt handler */
983 if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_ALLOC, len)) {
984 printk(KERN_DEBUG "%s: cannot allocate fid, len=%d\n",
985 dev->name, len);
986 return 0xffff;
987 }
988
989 delay = jiffies + HFA384X_ALLOC_COMPL_TIMEOUT;
990 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC) &&
991 time_before(jiffies, delay))
992 yield();
993 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC)) {
994 printk("%s: fid allocate, len=%d - timeout\n", dev->name, len);
995 return 0xffff;
996 }
997
998 fid = HFA384X_INW(HFA384X_ALLOCFID_OFF);
999 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF);
1000
1001 return fid;
1002 }
1003
1004
1005 static int prism2_reset_port(struct net_device *dev)
1006 {
1007 struct hostap_interface *iface;
1008 local_info_t *local;
1009 int res;
1010
1011 iface = netdev_priv(dev);
1012 local = iface->local;
1013
1014 if (!local->dev_enabled)
1015 return 0;
1016
1017 res = hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0,
1018 NULL, NULL);
1019 if (res)
1020 printk(KERN_DEBUG "%s: reset port failed to disable port\n",
1021 dev->name);
1022 else {
1023 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0,
1024 NULL, NULL);
1025 if (res)
1026 printk(KERN_DEBUG "%s: reset port failed to enable "
1027 "port\n", dev->name);
1028 }
1029
1030 /* It looks like at least some STA firmware versions reset
1031 * fragmentation threshold back to 2346 after enable command. Restore
1032 * the configured value, if it differs from this default. */
1033 if (local->fragm_threshold != 2346 &&
1034 hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD,
1035 local->fragm_threshold)) {
1036 printk(KERN_DEBUG "%s: failed to restore fragmentation "
1037 "threshold (%d) after Port0 enable\n",
1038 dev->name, local->fragm_threshold);
1039 }
1040
1041 /* Some firmwares lose antenna selection settings on reset */
1042 (void) hostap_set_antsel(local);
1043
1044 return res;
1045 }
1046
1047
1048 static int prism2_get_version_info(struct net_device *dev, u16 rid,
1049 const char *txt)
1050 {
1051 struct hfa384x_comp_ident comp;
1052 struct hostap_interface *iface;
1053 local_info_t *local;
1054
1055 iface = netdev_priv(dev);
1056 local = iface->local;
1057
1058 if (local->no_pri) {
1059 /* PRI f/w not yet available - cannot read RIDs */
1060 return -1;
1061 }
1062 if (hfa384x_get_rid(dev, rid, &comp, sizeof(comp), 1) < 0) {
1063 printk(KERN_DEBUG "Could not get RID for component %s\n", txt);
1064 return -1;
1065 }
1066
1067 printk(KERN_INFO "%s: %s: id=0x%02x v%d.%d.%d\n", dev->name, txt,
1068 __le16_to_cpu(comp.id), __le16_to_cpu(comp.major),
1069 __le16_to_cpu(comp.minor), __le16_to_cpu(comp.variant));
1070 return 0;
1071 }
1072
1073
1074 static int prism2_setup_rids(struct net_device *dev)
1075 {
1076 struct hostap_interface *iface;
1077 local_info_t *local;
1078 __le16 tmp;
1079 int ret = 0;
1080
1081 iface = netdev_priv(dev);
1082 local = iface->local;
1083
1084 hostap_set_word(dev, HFA384X_RID_TICKTIME, 2000);
1085
1086 if (!local->fw_ap) {
1087 u16 tmp1 = hostap_get_porttype(local);
1088 ret = hostap_set_word(dev, HFA384X_RID_CNFPORTTYPE, tmp1);
1089 if (ret) {
1090 printk("%s: Port type setting to %d failed\n",
1091 dev->name, tmp1);
1092 goto fail;
1093 }
1094 }
1095
1096 /* Setting SSID to empty string seems to kill the card in Host AP mode
1097 */
1098 if (local->iw_mode != IW_MODE_MASTER || local->essid[0] != '\0') {
1099 ret = hostap_set_string(dev, HFA384X_RID_CNFOWNSSID,
1100 local->essid);
1101 if (ret) {
1102 printk("%s: AP own SSID setting failed\n", dev->name);
1103 goto fail;
1104 }
1105 }
1106
1107 ret = hostap_set_word(dev, HFA384X_RID_CNFMAXDATALEN,
1108 PRISM2_DATA_MAXLEN);
1109 if (ret) {
1110 printk("%s: MAC data length setting to %d failed\n",
1111 dev->name, PRISM2_DATA_MAXLEN);
1112 goto fail;
1113 }
1114
1115 if (hfa384x_get_rid(dev, HFA384X_RID_CHANNELLIST, &tmp, 2, 1) < 0) {
1116 printk("%s: Channel list read failed\n", dev->name);
1117 ret = -EINVAL;
1118 goto fail;
1119 }
1120 local->channel_mask = le16_to_cpu(tmp);
1121
1122 if (local->channel < 1 || local->channel > 14 ||
1123 !(local->channel_mask & (1 << (local->channel - 1)))) {
1124 printk(KERN_WARNING "%s: Channel setting out of range "
1125 "(%d)!\n", dev->name, local->channel);
1126 ret = -EBUSY;
1127 goto fail;
1128 }
1129
1130 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNCHANNEL, local->channel);
1131 if (ret) {
1132 printk("%s: Channel setting to %d failed\n",
1133 dev->name, local->channel);
1134 goto fail;
1135 }
1136
1137 ret = hostap_set_word(dev, HFA384X_RID_CNFBEACONINT,
1138 local->beacon_int);
1139 if (ret) {
1140 printk("%s: Beacon interval setting to %d failed\n",
1141 dev->name, local->beacon_int);
1142 /* this may fail with Symbol/Lucent firmware */
1143 if (ret == -ETIMEDOUT)
1144 goto fail;
1145 }
1146
1147 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNDTIMPERIOD,
1148 local->dtim_period);
1149 if (ret) {
1150 printk("%s: DTIM period setting to %d failed\n",
1151 dev->name, local->dtim_period);
1152 /* this may fail with Symbol/Lucent firmware */
1153 if (ret == -ETIMEDOUT)
1154 goto fail;
1155 }
1156
1157 ret = hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE,
1158 local->is_promisc);
1159 if (ret)
1160 printk(KERN_INFO "%s: Setting promiscuous mode (%d) failed\n",
1161 dev->name, local->is_promisc);
1162
1163 if (!local->fw_ap) {
1164 ret = hostap_set_string(dev, HFA384X_RID_CNFDESIREDSSID,
1165 local->essid);
1166 if (ret) {
1167 printk("%s: Desired SSID setting failed\n", dev->name);
1168 goto fail;
1169 }
1170 }
1171
1172 /* Setup TXRateControl, defaults to allow use of 1, 2, 5.5, and
1173 * 11 Mbps in automatic TX rate fallback and 1 and 2 Mbps as basic
1174 * rates */
1175 if (local->tx_rate_control == 0) {
1176 local->tx_rate_control =
1177 HFA384X_RATES_1MBPS |
1178 HFA384X_RATES_2MBPS |
1179 HFA384X_RATES_5MBPS |
1180 HFA384X_RATES_11MBPS;
1181 }
1182 if (local->basic_rates == 0)
1183 local->basic_rates = HFA384X_RATES_1MBPS | HFA384X_RATES_2MBPS;
1184
1185 if (!local->fw_ap) {
1186 ret = hostap_set_word(dev, HFA384X_RID_TXRATECONTROL,
1187 local->tx_rate_control);
1188 if (ret) {
1189 printk("%s: TXRateControl setting to %d failed\n",
1190 dev->name, local->tx_rate_control);
1191 goto fail;
1192 }
1193
1194 ret = hostap_set_word(dev, HFA384X_RID_CNFSUPPORTEDRATES,
1195 local->tx_rate_control);
1196 if (ret) {
1197 printk("%s: cnfSupportedRates setting to %d failed\n",
1198 dev->name, local->tx_rate_control);
1199 }
1200
1201 ret = hostap_set_word(dev, HFA384X_RID_CNFBASICRATES,
1202 local->basic_rates);
1203 if (ret) {
1204 printk("%s: cnfBasicRates setting to %d failed\n",
1205 dev->name, local->basic_rates);
1206 }
1207
1208 ret = hostap_set_word(dev, HFA384X_RID_CREATEIBSS, 1);
1209 if (ret) {
1210 printk("%s: Create IBSS setting to 1 failed\n",
1211 dev->name);
1212 }
1213 }
1214
1215 if (local->name_set)
1216 (void) hostap_set_string(dev, HFA384X_RID_CNFOWNNAME,
1217 local->name);
1218
1219 if (hostap_set_encryption(local)) {
1220 printk(KERN_INFO "%s: could not configure encryption\n",
1221 dev->name);
1222 }
1223
1224 (void) hostap_set_antsel(local);
1225
1226 if (hostap_set_roaming(local)) {
1227 printk(KERN_INFO "%s: could not set host roaming\n",
1228 dev->name);
1229 }
1230
1231 if (local->sta_fw_ver >= PRISM2_FW_VER(1,6,3) &&
1232 hostap_set_word(dev, HFA384X_RID_CNFENHSECURITY, local->enh_sec))
1233 printk(KERN_INFO "%s: cnfEnhSecurity setting to 0x%x failed\n",
1234 dev->name, local->enh_sec);
1235
1236 /* 32-bit tallies were added in STA f/w 0.8.0, but they were apparently
1237 * not working correctly (last seven counters report bogus values).
1238 * This has been fixed in 0.8.2, so enable 32-bit tallies only
1239 * beginning with that firmware version. Another bug fix for 32-bit
1240 * tallies in 1.4.0; should 16-bit tallies be used for some other
1241 * versions, too? */
1242 if (local->sta_fw_ver >= PRISM2_FW_VER(0,8,2)) {
1243 if (hostap_set_word(dev, HFA384X_RID_CNFTHIRTY2TALLY, 1)) {
1244 printk(KERN_INFO "%s: cnfThirty2Tally setting "
1245 "failed\n", dev->name);
1246 local->tallies32 = 0;
1247 } else
1248 local->tallies32 = 1;
1249 } else
1250 local->tallies32 = 0;
1251
1252 hostap_set_auth_algs(local);
1253
1254 if (hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD,
1255 local->fragm_threshold)) {
1256 printk(KERN_INFO "%s: setting FragmentationThreshold to %d "
1257 "failed\n", dev->name, local->fragm_threshold);
1258 }
1259
1260 if (hostap_set_word(dev, HFA384X_RID_RTSTHRESHOLD,
1261 local->rts_threshold)) {
1262 printk(KERN_INFO "%s: setting RTSThreshold to %d failed\n",
1263 dev->name, local->rts_threshold);
1264 }
1265
1266 if (local->manual_retry_count >= 0 &&
1267 hostap_set_word(dev, HFA384X_RID_CNFALTRETRYCOUNT,
1268 local->manual_retry_count)) {
1269 printk(KERN_INFO "%s: setting cnfAltRetryCount to %d failed\n",
1270 dev->name, local->manual_retry_count);
1271 }
1272
1273 if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1) &&
1274 hfa384x_get_rid(dev, HFA384X_RID_CNFDBMADJUST, &tmp, 2, 1) == 2) {
1275 local->rssi_to_dBm = le16_to_cpu(tmp);
1276 }
1277
1278 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->wpa &&
1279 hostap_set_word(dev, HFA384X_RID_SSNHANDLINGMODE, 1)) {
1280 printk(KERN_INFO "%s: setting ssnHandlingMode to 1 failed\n",
1281 dev->name);
1282 }
1283
1284 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->generic_elem &&
1285 hfa384x_set_rid(dev, HFA384X_RID_GENERICELEMENT,
1286 local->generic_elem, local->generic_elem_len)) {
1287 printk(KERN_INFO "%s: setting genericElement failed\n",
1288 dev->name);
1289 }
1290
1291 fail:
1292 return ret;
1293 }
1294
1295
1296 static int prism2_hw_init(struct net_device *dev, int initial)
1297 {
1298 struct hostap_interface *iface;
1299 local_info_t *local;
1300 int ret, first = 1;
1301 unsigned long start, delay;
1302
1303 PDEBUG(DEBUG_FLOW, "prism2_hw_init()\n");
1304
1305 iface = netdev_priv(dev);
1306 local = iface->local;
1307
1308 clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits);
1309
1310 init:
1311 /* initialize HFA 384x */
1312 ret = hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_INIT, 0);
1313 if (ret) {
1314 printk(KERN_INFO "%s: first command failed - assuming card "
1315 "does not have primary firmware\n", dev_info);
1316 }
1317
1318 if (first && (HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) {
1319 /* EvStat has Cmd bit set in some cases, so retry once if no
1320 * wait was needed */
1321 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
1322 printk(KERN_DEBUG "%s: init command completed too quickly - "
1323 "retrying\n", dev->name);
1324 first = 0;
1325 goto init;
1326 }
1327
1328 start = jiffies;
1329 delay = jiffies + HFA384X_INIT_TIMEOUT;
1330 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) &&
1331 time_before(jiffies, delay))
1332 yield();
1333 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) {
1334 printk(KERN_DEBUG "%s: assuming no Primary image in "
1335 "flash - card initialization not completed\n",
1336 dev_info);
1337 local->no_pri = 1;
1338 #ifdef PRISM2_DOWNLOAD_SUPPORT
1339 if (local->sram_type == -1)
1340 local->sram_type = prism2_get_ram_size(local);
1341 #endif /* PRISM2_DOWNLOAD_SUPPORT */
1342 return 1;
1343 }
1344 local->no_pri = 0;
1345 printk(KERN_DEBUG "prism2_hw_init: initialized in %lu ms\n",
1346 (jiffies - start) * 1000 / HZ);
1347 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
1348 return 0;
1349 }
1350
1351
1352 static int prism2_hw_init2(struct net_device *dev, int initial)
1353 {
1354 struct hostap_interface *iface;
1355 local_info_t *local;
1356 int i;
1357
1358 iface = netdev_priv(dev);
1359 local = iface->local;
1360
1361 #ifdef PRISM2_DOWNLOAD_SUPPORT
1362 kfree(local->pda);
1363 if (local->no_pri)
1364 local->pda = NULL;
1365 else
1366 local->pda = prism2_read_pda(dev);
1367 #endif /* PRISM2_DOWNLOAD_SUPPORT */
1368
1369 hfa384x_disable_interrupts(dev);
1370
1371 #ifndef final_version
1372 HFA384X_OUTW(HFA384X_MAGIC, HFA384X_SWSUPPORT0_OFF);
1373 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) {
1374 printk("SWSUPPORT0 write/read failed: %04X != %04X\n",
1375 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC);
1376 goto failed;
1377 }
1378 #endif
1379
1380 if (initial || local->pri_only) {
1381 hfa384x_events_only_cmd(dev);
1382 /* get card version information */
1383 if (prism2_get_version_info(dev, HFA384X_RID_NICID, "NIC") ||
1384 prism2_get_version_info(dev, HFA384X_RID_PRIID, "PRI")) {
1385 hfa384x_disable_interrupts(dev);
1386 goto failed;
1387 }
1388
1389 if (prism2_get_version_info(dev, HFA384X_RID_STAID, "STA")) {
1390 printk(KERN_DEBUG "%s: Failed to read STA f/w version "
1391 "- only Primary f/w present\n", dev->name);
1392 local->pri_only = 1;
1393 return 0;
1394 }
1395 local->pri_only = 0;
1396 hfa384x_disable_interrupts(dev);
1397 }
1398
1399 /* FIX: could convert allocate_fid to use sleeping CmdCompl wait and
1400 * enable interrupts before this. This would also require some sort of
1401 * sleeping AllocEv waiting */
1402
1403 /* allocate TX FIDs */
1404 local->txfid_len = PRISM2_TXFID_LEN;
1405 for (i = 0; i < PRISM2_TXFID_COUNT; i++) {
1406 local->txfid[i] = hfa384x_allocate_fid(dev, local->txfid_len);
1407 if (local->txfid[i] == 0xffff && local->txfid_len > 1600) {
1408 local->txfid[i] = hfa384x_allocate_fid(dev, 1600);
1409 if (local->txfid[i] != 0xffff) {
1410 printk(KERN_DEBUG "%s: Using shorter TX FID "
1411 "(1600 bytes)\n", dev->name);
1412 local->txfid_len = 1600;
1413 }
1414 }
1415 if (local->txfid[i] == 0xffff)
1416 goto failed;
1417 local->intransmitfid[i] = PRISM2_TXFID_EMPTY;
1418 }
1419
1420 hfa384x_events_only_cmd(dev);
1421
1422 if (initial) {
1423 struct list_head *ptr;
1424 prism2_check_sta_fw_version(local);
1425
1426 if (hfa384x_get_rid(dev, HFA384X_RID_CNFOWNMACADDR,
1427 dev->dev_addr, 6, 1) < 0) {
1428 printk("%s: could not get own MAC address\n",
1429 dev->name);
1430 }
1431 list_for_each(ptr, &local->hostap_interfaces) {
1432 iface = list_entry(ptr, struct hostap_interface, list);
1433 memcpy(iface->dev->dev_addr, dev->dev_addr, ETH_ALEN);
1434 }
1435 } else if (local->fw_ap)
1436 prism2_check_sta_fw_version(local);
1437
1438 prism2_setup_rids(dev);
1439
1440 /* MAC is now configured, but port 0 is not yet enabled */
1441 return 0;
1442
1443 failed:
1444 if (!local->no_pri)
1445 printk(KERN_WARNING "%s: Initialization failed\n", dev_info);
1446 return 1;
1447 }
1448
1449
1450 static int prism2_hw_enable(struct net_device *dev, int initial)
1451 {
1452 struct hostap_interface *iface;
1453 local_info_t *local;
1454 int was_resetting;
1455
1456 iface = netdev_priv(dev);
1457 local = iface->local;
1458 was_resetting = local->hw_resetting;
1459
1460 if (hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, NULL, NULL)) {
1461 printk("%s: MAC port 0 enabling failed\n", dev->name);
1462 return 1;
1463 }
1464
1465 local->hw_ready = 1;
1466 local->hw_reset_tries = 0;
1467 local->hw_resetting = 0;
1468 hfa384x_enable_interrupts(dev);
1469
1470 /* at least D-Link DWL-650 seems to require additional port reset
1471 * before it starts acting as an AP, so reset port automatically
1472 * here just in case */
1473 if (initial && prism2_reset_port(dev)) {
1474 printk("%s: MAC port 0 reseting failed\n", dev->name);
1475 return 1;
1476 }
1477
1478 if (was_resetting && netif_queue_stopped(dev)) {
1479 /* If hw_reset() was called during pending transmit, netif
1480 * queue was stopped. Wake it up now since the wlan card has
1481 * been resetted. */
1482 netif_wake_queue(dev);
1483 }
1484
1485 return 0;
1486 }
1487
1488
1489 static int prism2_hw_config(struct net_device *dev, int initial)
1490 {
1491 struct hostap_interface *iface;
1492 local_info_t *local;
1493
1494 iface = netdev_priv(dev);
1495 local = iface->local;
1496
1497 if (local->hw_downloading)
1498 return 1;
1499
1500 if (prism2_hw_init(dev, initial)) {
1501 return local->no_pri ? 0 : 1;
1502 }
1503
1504 if (prism2_hw_init2(dev, initial))
1505 return 1;
1506
1507 /* Enable firmware if secondary image is loaded and at least one of the
1508 * netdevices is up. */
1509 if (!local->pri_only &&
1510 (initial == 0 || (initial == 2 && local->num_dev_open > 0))) {
1511 if (!local->dev_enabled)
1512 prism2_callback(local, PRISM2_CALLBACK_ENABLE);
1513 local->dev_enabled = 1;
1514 return prism2_hw_enable(dev, initial);
1515 }
1516
1517 return 0;
1518 }
1519
1520
1521 static void prism2_hw_shutdown(struct net_device *dev, int no_disable)
1522 {
1523 struct hostap_interface *iface;
1524 local_info_t *local;
1525
1526 iface = netdev_priv(dev);
1527 local = iface->local;
1528
1529 /* Allow only command completion events during disable */
1530 hfa384x_events_only_cmd(dev);
1531
1532 local->hw_ready = 0;
1533 if (local->dev_enabled)
1534 prism2_callback(local, PRISM2_CALLBACK_DISABLE);
1535 local->dev_enabled = 0;
1536
1537 if (local->func->card_present && !local->func->card_present(local)) {
1538 printk(KERN_DEBUG "%s: card already removed or not configured "
1539 "during shutdown\n", dev->name);
1540 return;
1541 }
1542
1543 if ((no_disable & HOSTAP_HW_NO_DISABLE) == 0 &&
1544 hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, NULL, NULL))
1545 printk(KERN_WARNING "%s: Shutdown failed\n", dev_info);
1546
1547 hfa384x_disable_interrupts(dev);
1548
1549 if (no_disable & HOSTAP_HW_ENABLE_CMDCOMPL)
1550 hfa384x_events_only_cmd(dev);
1551 else
1552 prism2_clear_cmd_queue(local);
1553 }
1554
1555
1556 static void prism2_hw_reset(struct net_device *dev)
1557 {
1558 struct hostap_interface *iface;
1559 local_info_t *local;
1560
1561 #if 0
1562 static long last_reset = 0;
1563
1564 /* do not reset card more than once per second to avoid ending up in a
1565 * busy loop reseting the card */
1566 if (time_before_eq(jiffies, last_reset + HZ))
1567 return;
1568 last_reset = jiffies;
1569 #endif
1570
1571 iface = netdev_priv(dev);
1572 local = iface->local;
1573
1574 if (in_interrupt()) {
1575 printk(KERN_DEBUG "%s: driver bug - prism2_hw_reset() called "
1576 "in interrupt context\n", dev->name);
1577 return;
1578 }
1579
1580 if (local->hw_downloading)
1581 return;
1582
1583 if (local->hw_resetting) {
1584 printk(KERN_WARNING "%s: %s: already resetting card - "
1585 "ignoring reset request\n", dev_info, dev->name);
1586 return;
1587 }
1588
1589 local->hw_reset_tries++;
1590 if (local->hw_reset_tries > 10) {
1591 printk(KERN_WARNING "%s: too many reset tries, skipping\n",
1592 dev->name);
1593 return;
1594 }
1595
1596 printk(KERN_WARNING "%s: %s: resetting card\n", dev_info, dev->name);
1597 hfa384x_disable_interrupts(dev);
1598 local->hw_resetting = 1;
1599 if (local->func->cor_sreset) {
1600 /* Host system seems to hang in some cases with high traffic
1601 * load or shared interrupts during COR sreset. Disable shared
1602 * interrupts during reset to avoid these crashes. COS sreset
1603 * takes quite a long time, so it is unfortunate that this
1604 * seems to be needed. Anyway, I do not know of any better way
1605 * of avoiding the crash. */
1606 disable_irq(dev->irq);
1607 local->func->cor_sreset(local);
1608 enable_irq(dev->irq);
1609 }
1610 prism2_hw_shutdown(dev, 1);
1611 prism2_hw_config(dev, 0);
1612 local->hw_resetting = 0;
1613
1614 #ifdef PRISM2_DOWNLOAD_SUPPORT
1615 if (local->dl_pri) {
1616 printk(KERN_DEBUG "%s: persistent download of primary "
1617 "firmware\n", dev->name);
1618 if (prism2_download_genesis(local, local->dl_pri) < 0)
1619 printk(KERN_WARNING "%s: download (PRI) failed\n",
1620 dev->name);
1621 }
1622
1623 if (local->dl_sec) {
1624 printk(KERN_DEBUG "%s: persistent download of secondary "
1625 "firmware\n", dev->name);
1626 if (prism2_download_volatile(local, local->dl_sec) < 0)
1627 printk(KERN_WARNING "%s: download (SEC) failed\n",
1628 dev->name);
1629 }
1630 #endif /* PRISM2_DOWNLOAD_SUPPORT */
1631
1632 /* TODO: restore beacon TIM bits for STAs that have buffered frames */
1633 }
1634
1635
1636 static void prism2_schedule_reset(local_info_t *local)
1637 {
1638 schedule_work(&local->reset_queue);
1639 }
1640
1641
1642 /* Called only as scheduled task after noticing card timeout in interrupt
1643 * context */
1644 static void handle_reset_queue(struct work_struct *work)
1645 {
1646 local_info_t *local = container_of(work, local_info_t, reset_queue);
1647
1648 printk(KERN_DEBUG "%s: scheduled card reset\n", local->dev->name);
1649 prism2_hw_reset(local->dev);
1650
1651 if (netif_queue_stopped(local->dev)) {
1652 int i;
1653
1654 for (i = 0; i < PRISM2_TXFID_COUNT; i++)
1655 if (local->intransmitfid[i] == PRISM2_TXFID_EMPTY) {
1656 PDEBUG(DEBUG_EXTRA, "prism2_tx_timeout: "
1657 "wake up queue\n");
1658 netif_wake_queue(local->dev);
1659 break;
1660 }
1661 }
1662 }
1663
1664
1665 static int prism2_get_txfid_idx(local_info_t *local)
1666 {
1667 int idx, end;
1668 unsigned long flags;
1669
1670 spin_lock_irqsave(&local->txfidlock, flags);
1671 end = idx = local->next_txfid;
1672 do {
1673 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) {
1674 local->intransmitfid[idx] = PRISM2_TXFID_RESERVED;
1675 spin_unlock_irqrestore(&local->txfidlock, flags);
1676 return idx;
1677 }
1678 idx++;
1679 if (idx >= PRISM2_TXFID_COUNT)
1680 idx = 0;
1681 } while (idx != end);
1682 spin_unlock_irqrestore(&local->txfidlock, flags);
1683
1684 PDEBUG(DEBUG_EXTRA2, "prism2_get_txfid_idx: no room in txfid buf: "
1685 "packet dropped\n");
1686 local->dev->stats.tx_dropped++;
1687
1688 return -1;
1689 }
1690
1691
1692 /* Called only from hardware IRQ */
1693 static void prism2_transmit_cb(struct net_device *dev, long context,
1694 u16 resp0, u16 res)
1695 {
1696 struct hostap_interface *iface;
1697 local_info_t *local;
1698 int idx = (int) context;
1699
1700 iface = netdev_priv(dev);
1701 local = iface->local;
1702
1703 if (res) {
1704 printk(KERN_DEBUG "%s: prism2_transmit_cb - res=0x%02x\n",
1705 dev->name, res);
1706 return;
1707 }
1708
1709 if (idx < 0 || idx >= PRISM2_TXFID_COUNT) {
1710 printk(KERN_DEBUG "%s: prism2_transmit_cb called with invalid "
1711 "idx=%d\n", dev->name, idx);
1712 return;
1713 }
1714
1715 if (!test_and_clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
1716 printk(KERN_DEBUG "%s: driver bug: prism2_transmit_cb called "
1717 "with no pending transmit\n", dev->name);
1718 }
1719
1720 if (netif_queue_stopped(dev)) {
1721 /* ready for next TX, so wake up queue that was stopped in
1722 * prism2_transmit() */
1723 netif_wake_queue(dev);
1724 }
1725
1726 spin_lock(&local->txfidlock);
1727
1728 /* With reclaim, Resp0 contains new txfid for transmit; the old txfid
1729 * will be automatically allocated for the next TX frame */
1730 local->intransmitfid[idx] = resp0;
1731
1732 PDEBUG(DEBUG_FID, "%s: prism2_transmit_cb: txfid[%d]=0x%04x, "
1733 "resp0=0x%04x, transmit_txfid=0x%04x\n",
1734 dev->name, idx, local->txfid[idx],
1735 resp0, local->intransmitfid[local->next_txfid]);
1736
1737 idx++;
1738 if (idx >= PRISM2_TXFID_COUNT)
1739 idx = 0;
1740 local->next_txfid = idx;
1741
1742 /* check if all TX buffers are occupied */
1743 do {
1744 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) {
1745 spin_unlock(&local->txfidlock);
1746 return;
1747 }
1748 idx++;
1749 if (idx >= PRISM2_TXFID_COUNT)
1750 idx = 0;
1751 } while (idx != local->next_txfid);
1752 spin_unlock(&local->txfidlock);
1753
1754 /* no empty TX buffers, stop queue */
1755 netif_stop_queue(dev);
1756 }
1757
1758
1759 /* Called only from software IRQ if PCI bus master is not used (with bus master
1760 * this can be called both from software and hardware IRQ) */
1761 static int prism2_transmit(struct net_device *dev, int idx)
1762 {
1763 struct hostap_interface *iface;
1764 local_info_t *local;
1765 int res;
1766
1767 iface = netdev_priv(dev);
1768 local = iface->local;
1769
1770 /* The driver tries to stop netif queue so that there would not be
1771 * more than one attempt to transmit frames going on; check that this
1772 * is really the case */
1773
1774 if (test_and_set_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
1775 printk(KERN_DEBUG "%s: driver bug - prism2_transmit() called "
1776 "when previous TX was pending\n", dev->name);
1777 return -1;
1778 }
1779
1780 /* stop the queue for the time that transmit is pending */
1781 netif_stop_queue(dev);
1782
1783 /* transmit packet */
1784 res = hfa384x_cmd_callback(
1785 dev,
1786 HFA384X_CMDCODE_TRANSMIT | HFA384X_CMD_TX_RECLAIM,
1787 local->txfid[idx],
1788 prism2_transmit_cb, (long) idx);
1789
1790 if (res) {
1791 printk(KERN_DEBUG "%s: prism2_transmit: CMDCODE_TRANSMIT "
1792 "failed (res=%d)\n", dev->name, res);
1793 dev->stats.tx_dropped++;
1794 netif_wake_queue(dev);
1795 return -1;
1796 }
1797 dev->trans_start = jiffies;
1798
1799 /* Since we did not wait for command completion, the card continues
1800 * to process on the background and we will finish handling when
1801 * command completion event is handled (prism2_cmd_ev() function) */
1802
1803 return 0;
1804 }
1805
1806
1807 /* Send IEEE 802.11 frame (convert the header into Prism2 TX descriptor and
1808 * send the payload with this descriptor) */
1809 /* Called only from software IRQ */
1810 static int prism2_tx_80211(struct sk_buff *skb, struct net_device *dev)
1811 {
1812 struct hostap_interface *iface;
1813 local_info_t *local;
1814 struct hfa384x_tx_frame txdesc;
1815 struct hostap_skb_tx_data *meta;
1816 int hdr_len, data_len, idx, res, ret = -1;
1817 u16 tx_control, fc;
1818
1819 iface = netdev_priv(dev);
1820 local = iface->local;
1821
1822 meta = (struct hostap_skb_tx_data *) skb->cb;
1823
1824 prism2_callback(local, PRISM2_CALLBACK_TX_START);
1825
1826 if ((local->func->card_present && !local->func->card_present(local)) ||
1827 !local->hw_ready || local->hw_downloading || local->pri_only) {
1828 if (net_ratelimit()) {
1829 printk(KERN_DEBUG "%s: prism2_tx_80211: hw not ready -"
1830 " skipping\n", dev->name);
1831 }
1832 goto fail;
1833 }
1834
1835 memset(&txdesc, 0, sizeof(txdesc));
1836
1837 /* skb->data starts with txdesc->frame_control */
1838 hdr_len = 24;
1839 skb_copy_from_linear_data(skb, &txdesc.frame_control, hdr_len);
1840 fc = le16_to_cpu(txdesc.frame_control);
1841 if (ieee80211_is_data(txdesc.frame_control) &&
1842 ieee80211_has_a4(txdesc.frame_control) &&
1843 skb->len >= 30) {
1844 /* Addr4 */
1845 skb_copy_from_linear_data_offset(skb, hdr_len, txdesc.addr4,
1846 ETH_ALEN);
1847 hdr_len += ETH_ALEN;
1848 }
1849
1850 tx_control = local->tx_control;
1851 if (meta->tx_cb_idx) {
1852 tx_control |= HFA384X_TX_CTRL_TX_OK;
1853 txdesc.sw_support = cpu_to_le32(meta->tx_cb_idx);
1854 }
1855 txdesc.tx_control = cpu_to_le16(tx_control);
1856 txdesc.tx_rate = meta->rate;
1857
1858 data_len = skb->len - hdr_len;
1859 txdesc.data_len = cpu_to_le16(data_len);
1860 txdesc.len = cpu_to_be16(data_len);
1861
1862 idx = prism2_get_txfid_idx(local);
1863 if (idx < 0)
1864 goto fail;
1865
1866 if (local->frame_dump & PRISM2_DUMP_TX_HDR)
1867 hostap_dump_tx_header(dev->name, &txdesc);
1868
1869 spin_lock(&local->baplock);
1870 res = hfa384x_setup_bap(dev, BAP0, local->txfid[idx], 0);
1871
1872 if (!res)
1873 res = hfa384x_to_bap(dev, BAP0, &txdesc, sizeof(txdesc));
1874 if (!res)
1875 res = hfa384x_to_bap(dev, BAP0, skb->data + hdr_len,
1876 skb->len - hdr_len);
1877 spin_unlock(&local->baplock);
1878
1879 if (!res)
1880 res = prism2_transmit(dev, idx);
1881 if (res) {
1882 printk(KERN_DEBUG "%s: prism2_tx_80211 - to BAP0 failed\n",
1883 dev->name);
1884 local->intransmitfid[idx] = PRISM2_TXFID_EMPTY;
1885 schedule_work(&local->reset_queue);
1886 goto fail;
1887 }
1888
1889 ret = 0;
1890
1891 fail:
1892 prism2_callback(local, PRISM2_CALLBACK_TX_END);
1893 return ret;
1894 }
1895
1896
1897 /* Some SMP systems have reported number of odd errors with hostap_pci. fid
1898 * register has changed values between consecutive reads for an unknown reason.
1899 * This should really not happen, so more debugging is needed. This test
1900 * version is a bit slower, but it will detect most of such register changes
1901 * and will try to get the correct fid eventually. */
1902 #define EXTRA_FID_READ_TESTS
1903
1904 static u16 prism2_read_fid_reg(struct net_device *dev, u16 reg)
1905 {
1906 #ifdef EXTRA_FID_READ_TESTS
1907 u16 val, val2, val3;
1908 int i;
1909
1910 for (i = 0; i < 10; i++) {
1911 val = HFA384X_INW(reg);
1912 val2 = HFA384X_INW(reg);
1913 val3 = HFA384X_INW(reg);
1914
1915 if (val == val2 && val == val3)
1916 return val;
1917
1918 printk(KERN_DEBUG "%s: detected fid change (try=%d, reg=%04x):"
1919 " %04x %04x %04x\n",
1920 dev->name, i, reg, val, val2, val3);
1921 if ((val == val2 || val == val3) && val != 0)
1922 return val;
1923 if (val2 == val3 && val2 != 0)
1924 return val2;
1925 }
1926 printk(KERN_WARNING "%s: Uhhuh.. could not read good fid from reg "
1927 "%04x (%04x %04x %04x)\n", dev->name, reg, val, val2, val3);
1928 return val;
1929 #else /* EXTRA_FID_READ_TESTS */
1930 return HFA384X_INW(reg);
1931 #endif /* EXTRA_FID_READ_TESTS */
1932 }
1933
1934
1935 /* Called only as a tasklet (software IRQ) */
1936 static void prism2_rx(local_info_t *local)
1937 {
1938 struct net_device *dev = local->dev;
1939 int res, rx_pending = 0;
1940 u16 len, hdr_len, rxfid, status, macport;
1941 struct hfa384x_rx_frame rxdesc;
1942 struct sk_buff *skb = NULL;
1943
1944 prism2_callback(local, PRISM2_CALLBACK_RX_START);
1945
1946 rxfid = prism2_read_fid_reg(dev, HFA384X_RXFID_OFF);
1947 #ifndef final_version
1948 if (rxfid == 0) {
1949 rxfid = HFA384X_INW(HFA384X_RXFID_OFF);
1950 printk(KERN_DEBUG "prism2_rx: rxfid=0 (next 0x%04x)\n",
1951 rxfid);
1952 if (rxfid == 0) {
1953 schedule_work(&local->reset_queue);
1954 goto rx_dropped;
1955 }
1956 /* try to continue with the new rxfid value */
1957 }
1958 #endif
1959
1960 spin_lock(&local->baplock);
1961 res = hfa384x_setup_bap(dev, BAP0, rxfid, 0);
1962 if (!res)
1963 res = hfa384x_from_bap(dev, BAP0, &rxdesc, sizeof(rxdesc));
1964
1965 if (res) {
1966 spin_unlock(&local->baplock);
1967 printk(KERN_DEBUG "%s: copy from BAP0 failed %d\n", dev->name,
1968 res);
1969 if (res == -ETIMEDOUT) {
1970 schedule_work(&local->reset_queue);
1971 }
1972 goto rx_dropped;
1973 }
1974
1975 len = le16_to_cpu(rxdesc.data_len);
1976 hdr_len = sizeof(rxdesc);
1977 status = le16_to_cpu(rxdesc.status);
1978 macport = (status >> 8) & 0x07;
1979
1980 /* Drop frames with too large reported payload length. Monitor mode
1981 * seems to sometimes pass frames (e.g., ctrl::ack) with signed and
1982 * negative value, so allow also values 65522 .. 65534 (-14 .. -2) for
1983 * macport 7 */
1984 if (len > PRISM2_DATA_MAXLEN + 8 /* WEP */) {
1985 if (macport == 7 && local->iw_mode == IW_MODE_MONITOR) {
1986 if (len >= (u16) -14) {
1987 hdr_len -= 65535 - len;
1988 hdr_len--;
1989 }
1990 len = 0;
1991 } else {
1992 spin_unlock(&local->baplock);
1993 printk(KERN_DEBUG "%s: Received frame with invalid "
1994 "length 0x%04x\n", dev->name, len);
1995 hostap_dump_rx_header(dev->name, &rxdesc);
1996 goto rx_dropped;
1997 }
1998 }
1999
2000 skb = dev_alloc_skb(len + hdr_len);
2001 if (!skb) {
2002 spin_unlock(&local->baplock);
2003 printk(KERN_DEBUG "%s: RX failed to allocate skb\n",
2004 dev->name);
2005 goto rx_dropped;
2006 }
2007 skb->dev = dev;
2008 memcpy(skb_put(skb, hdr_len), &rxdesc, hdr_len);
2009
2010 if (len > 0)
2011 res = hfa384x_from_bap(dev, BAP0, skb_put(skb, len), len);
2012 spin_unlock(&local->baplock);
2013 if (res) {
2014 printk(KERN_DEBUG "%s: RX failed to read "
2015 "frame data\n", dev->name);
2016 goto rx_dropped;
2017 }
2018
2019 skb_queue_tail(&local->rx_list, skb);
2020 tasklet_schedule(&local->rx_tasklet);
2021
2022 rx_exit:
2023 prism2_callback(local, PRISM2_CALLBACK_RX_END);
2024 if (!rx_pending) {
2025 HFA384X_OUTW(HFA384X_EV_RX, HFA384X_EVACK_OFF);
2026 }
2027
2028 return;
2029
2030 rx_dropped:
2031 dev->stats.rx_dropped++;
2032 if (skb)
2033 dev_kfree_skb(skb);
2034 goto rx_exit;
2035 }
2036
2037
2038 /* Called only as a tasklet (software IRQ) */
2039 static void hostap_rx_skb(local_info_t *local, struct sk_buff *skb)
2040 {
2041 struct hfa384x_rx_frame *rxdesc;
2042 struct net_device *dev = skb->dev;
2043 struct hostap_80211_rx_status stats;
2044 int hdrlen, rx_hdrlen;
2045
2046 rx_hdrlen = sizeof(*rxdesc);
2047 if (skb->len < sizeof(*rxdesc)) {
2048 /* Allow monitor mode to receive shorter frames */
2049 if (local->iw_mode == IW_MODE_MONITOR &&
2050 skb->len >= sizeof(*rxdesc) - 30) {
2051 rx_hdrlen = skb->len;
2052 } else {
2053 dev_kfree_skb(skb);
2054 return;
2055 }
2056 }
2057
2058 rxdesc = (struct hfa384x_rx_frame *) skb->data;
2059
2060 if (local->frame_dump & PRISM2_DUMP_RX_HDR &&
2061 skb->len >= sizeof(*rxdesc))
2062 hostap_dump_rx_header(dev->name, rxdesc);
2063
2064 if (le16_to_cpu(rxdesc->status) & HFA384X_RX_STATUS_FCSERR &&
2065 (!local->monitor_allow_fcserr ||
2066 local->iw_mode != IW_MODE_MONITOR))
2067 goto drop;
2068
2069 if (skb->len > PRISM2_DATA_MAXLEN) {
2070 printk(KERN_DEBUG "%s: RX: len(%d) > MAX(%d)\n",
2071 dev->name, skb->len, PRISM2_DATA_MAXLEN);
2072 goto drop;
2073 }
2074
2075 stats.mac_time = le32_to_cpu(rxdesc->time);
2076 stats.signal = rxdesc->signal - local->rssi_to_dBm;
2077 stats.noise = rxdesc->silence - local->rssi_to_dBm;
2078 stats.rate = rxdesc->rate;
2079
2080 /* Convert Prism2 RX structure into IEEE 802.11 header */
2081 hdrlen = hostap_80211_get_hdrlen(rxdesc->frame_control);
2082 if (hdrlen > rx_hdrlen)
2083 hdrlen = rx_hdrlen;
2084
2085 memmove(skb_pull(skb, rx_hdrlen - hdrlen),
2086 &rxdesc->frame_control, hdrlen);
2087
2088 hostap_80211_rx(dev, skb, &stats);
2089 return;
2090
2091 drop:
2092 dev_kfree_skb(skb);
2093 }
2094
2095
2096 /* Called only as a tasklet (software IRQ) */
2097 static void hostap_rx_tasklet(unsigned long data)
2098 {
2099 local_info_t *local = (local_info_t *) data;
2100 struct sk_buff *skb;
2101
2102 while ((skb = skb_dequeue(&local->rx_list)) != NULL)
2103 hostap_rx_skb(local, skb);
2104 }
2105
2106
2107 /* Called only from hardware IRQ */
2108 static void prism2_alloc_ev(struct net_device *dev)
2109 {
2110 struct hostap_interface *iface;
2111 local_info_t *local;
2112 int idx;
2113 u16 fid;
2114
2115 iface = netdev_priv(dev);
2116 local = iface->local;
2117
2118 fid = prism2_read_fid_reg(dev, HFA384X_ALLOCFID_OFF);
2119
2120 PDEBUG(DEBUG_FID, "FID: interrupt: ALLOC - fid=0x%04x\n", fid);
2121
2122 spin_lock(&local->txfidlock);
2123 idx = local->next_alloc;
2124
2125 do {
2126 if (local->txfid[idx] == fid) {
2127 PDEBUG(DEBUG_FID, "FID: found matching txfid[%d]\n",
2128 idx);
2129
2130 #ifndef final_version
2131 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY)
2132 printk("Already released txfid found at idx "
2133 "%d\n", idx);
2134 if (local->intransmitfid[idx] == PRISM2_TXFID_RESERVED)
2135 printk("Already reserved txfid found at idx "
2136 "%d\n", idx);
2137 #endif
2138 local->intransmitfid[idx] = PRISM2_TXFID_EMPTY;
2139 idx++;
2140 local->next_alloc = idx >= PRISM2_TXFID_COUNT ? 0 :
2141 idx;
2142
2143 if (!test_bit(HOSTAP_BITS_TRANSMIT, &local->bits) &&
2144 netif_queue_stopped(dev))
2145 netif_wake_queue(dev);
2146
2147 spin_unlock(&local->txfidlock);
2148 return;
2149 }
2150
2151 idx++;
2152 if (idx >= PRISM2_TXFID_COUNT)
2153 idx = 0;
2154 } while (idx != local->next_alloc);
2155
2156 printk(KERN_WARNING "%s: could not find matching txfid (0x%04x, new "
2157 "read 0x%04x) for alloc event\n", dev->name, fid,
2158 HFA384X_INW(HFA384X_ALLOCFID_OFF));
2159 printk(KERN_DEBUG "TXFIDs:");
2160 for (idx = 0; idx < PRISM2_TXFID_COUNT; idx++)
2161 printk(" %04x[%04x]", local->txfid[idx],
2162 local->intransmitfid[idx]);
2163 printk("\n");
2164 spin_unlock(&local->txfidlock);
2165
2166 /* FIX: should probably schedule reset; reference to one txfid was lost
2167 * completely.. Bad things will happen if we run out of txfids
2168 * Actually, this will cause netdev watchdog to notice TX timeout and
2169 * then card reset after all txfids have been leaked. */
2170 }
2171
2172
2173 /* Called only as a tasklet (software IRQ) */
2174 static void hostap_tx_callback(local_info_t *local,
2175 struct hfa384x_tx_frame *txdesc, int ok,
2176 char *payload)
2177 {
2178 u16 sw_support, hdrlen, len;
2179 struct sk_buff *skb;
2180 struct hostap_tx_callback_info *cb;
2181
2182 /* Make sure that frame was from us. */
2183 if (memcmp(txdesc->addr2, local->dev->dev_addr, ETH_ALEN)) {
2184 printk(KERN_DEBUG "%s: TX callback - foreign frame\n",
2185 local->dev->name);
2186 return;
2187 }
2188
2189 sw_support = le32_to_cpu(txdesc->sw_support);
2190
2191 spin_lock(&local->lock);
2192 cb = local->tx_callback;
2193 while (cb != NULL && cb->idx != sw_support)
2194 cb = cb->next;
2195 spin_unlock(&local->lock);
2196
2197 if (cb == NULL) {
2198 printk(KERN_DEBUG "%s: could not find TX callback (idx %d)\n",
2199 local->dev->name, sw_support);
2200 return;
2201 }
2202
2203 hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control);
2204 len = le16_to_cpu(txdesc->data_len);
2205 skb = dev_alloc_skb(hdrlen + len);
2206 if (skb == NULL) {
2207 printk(KERN_DEBUG "%s: hostap_tx_callback failed to allocate "
2208 "skb\n", local->dev->name);
2209 return;
2210 }
2211
2212 memcpy(skb_put(skb, hdrlen), (void *) &txdesc->frame_control, hdrlen);
2213 if (payload)
2214 memcpy(skb_put(skb, len), payload, len);
2215
2216 skb->dev = local->dev;
2217 skb_reset_mac_header(skb);
2218
2219 cb->func(skb, ok, cb->data);
2220 }
2221
2222
2223 /* Called only as a tasklet (software IRQ) */
2224 static int hostap_tx_compl_read(local_info_t *local, int error,
2225 struct hfa384x_tx_frame *txdesc,
2226 char **payload)
2227 {
2228 u16 fid, len;
2229 int res, ret = 0;
2230 struct net_device *dev = local->dev;
2231
2232 fid = prism2_read_fid_reg(dev, HFA384X_TXCOMPLFID_OFF);
2233
2234 PDEBUG(DEBUG_FID, "interrupt: TX (err=%d) - fid=0x%04x\n", fid, error);
2235
2236 spin_lock(&local->baplock);
2237 res = hfa384x_setup_bap(dev, BAP0, fid, 0);
2238 if (!res)
2239 res = hfa384x_from_bap(dev, BAP0, txdesc, sizeof(*txdesc));
2240 if (res) {
2241 PDEBUG(DEBUG_EXTRA, "%s: TX (err=%d) - fid=0x%04x - could not "
2242 "read txdesc\n", dev->name, error, fid);
2243 if (res == -ETIMEDOUT) {
2244 schedule_work(&local->reset_queue);
2245 }
2246 ret = -1;
2247 goto fail;
2248 }
2249 if (txdesc->sw_support) {
2250 len = le16_to_cpu(txdesc->data_len);
2251 if (len < PRISM2_DATA_MAXLEN) {
2252 *payload = kmalloc(len, GFP_ATOMIC);
2253 if (*payload == NULL ||
2254 hfa384x_from_bap(dev, BAP0, *payload, len)) {
2255 PDEBUG(DEBUG_EXTRA, "%s: could not read TX "
2256 "frame payload\n", dev->name);
2257 kfree(*payload);
2258 *payload = NULL;
2259 ret = -1;
2260 goto fail;
2261 }
2262 }
2263 }
2264
2265 fail:
2266 spin_unlock(&local->baplock);
2267
2268 return ret;
2269 }
2270
2271
2272 /* Called only as a tasklet (software IRQ) */
2273 static void prism2_tx_ev(local_info_t *local)
2274 {
2275 struct net_device *dev = local->dev;
2276 char *payload = NULL;
2277 struct hfa384x_tx_frame txdesc;
2278
2279 if (hostap_tx_compl_read(local, 0, &txdesc, &payload))
2280 goto fail;
2281
2282 if (local->frame_dump & PRISM2_DUMP_TX_HDR) {
2283 PDEBUG(DEBUG_EXTRA, "%s: TX - status=0x%04x "
2284 "retry_count=%d tx_rate=%d seq_ctrl=%d "
2285 "duration_id=%d\n",
2286 dev->name, le16_to_cpu(txdesc.status),
2287 txdesc.retry_count, txdesc.tx_rate,
2288 le16_to_cpu(txdesc.seq_ctrl),
2289 le16_to_cpu(txdesc.duration_id));
2290 }
2291
2292 if (txdesc.sw_support)
2293 hostap_tx_callback(local, &txdesc, 1, payload);
2294 kfree(payload);
2295
2296 fail:
2297 HFA384X_OUTW(HFA384X_EV_TX, HFA384X_EVACK_OFF);
2298 }
2299
2300
2301 /* Called only as a tasklet (software IRQ) */
2302 static void hostap_sta_tx_exc_tasklet(unsigned long data)
2303 {
2304 local_info_t *local = (local_info_t *) data;
2305 struct sk_buff *skb;
2306
2307 while ((skb = skb_dequeue(&local->sta_tx_exc_list)) != NULL) {
2308 struct hfa384x_tx_frame *txdesc =
2309 (struct hfa384x_tx_frame *) skb->data;
2310
2311 if (skb->len >= sizeof(*txdesc)) {
2312 /* Convert Prism2 RX structure into IEEE 802.11 header
2313 */
2314 int hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control);
2315 memmove(skb_pull(skb, sizeof(*txdesc) - hdrlen),
2316 &txdesc->frame_control, hdrlen);
2317
2318 hostap_handle_sta_tx_exc(local, skb);
2319 }
2320 dev_kfree_skb(skb);
2321 }
2322 }
2323
2324
2325 /* Called only as a tasklet (software IRQ) */
2326 static void prism2_txexc(local_info_t *local)
2327 {
2328 struct net_device *dev = local->dev;
2329 u16 status, fc;
2330 int show_dump, res;
2331 char *payload = NULL;
2332 struct hfa384x_tx_frame txdesc;
2333
2334 show_dump = local->frame_dump & PRISM2_DUMP_TXEXC_HDR;
2335 dev->stats.tx_errors++;
2336
2337 res = hostap_tx_compl_read(local, 1, &txdesc, &payload);
2338 HFA384X_OUTW(HFA384X_EV_TXEXC, HFA384X_EVACK_OFF);
2339 if (res)
2340 return;
2341
2342 status = le16_to_cpu(txdesc.status);
2343
2344 /* We produce a TXDROP event only for retry or lifetime
2345 * exceeded, because that's the only status that really mean
2346 * that this particular node went away.
2347 * Other errors means that *we* screwed up. - Jean II */
2348 if (status & (HFA384X_TX_STATUS_RETRYERR | HFA384X_TX_STATUS_AGEDERR))
2349 {
2350 union iwreq_data wrqu;
2351
2352 /* Copy 802.11 dest address. */
2353 memcpy(wrqu.addr.sa_data, txdesc.addr1, ETH_ALEN);
2354 wrqu.addr.sa_family = ARPHRD_ETHER;
2355 wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL);
2356 } else
2357 show_dump = 1;
2358
2359 if (local->iw_mode == IW_MODE_MASTER ||
2360 local->iw_mode == IW_MODE_REPEAT ||
2361 local->wds_type & HOSTAP_WDS_AP_CLIENT) {
2362 struct sk_buff *skb;
2363 skb = dev_alloc_skb(sizeof(txdesc));
2364 if (skb) {
2365 memcpy(skb_put(skb, sizeof(txdesc)), &txdesc,
2366 sizeof(txdesc));
2367 skb_queue_tail(&local->sta_tx_exc_list, skb);
2368 tasklet_schedule(&local->sta_tx_exc_tasklet);
2369 }
2370 }
2371
2372 if (txdesc.sw_support)
2373 hostap_tx_callback(local, &txdesc, 0, payload);
2374 kfree(payload);
2375
2376 if (!show_dump)
2377 return;
2378
2379 PDEBUG(DEBUG_EXTRA, "%s: TXEXC - status=0x%04x (%s%s%s%s)"
2380 " tx_control=%04x\n",
2381 dev->name, status,
2382 status & HFA384X_TX_STATUS_RETRYERR ? "[RetryErr]" : "",
2383 status & HFA384X_TX_STATUS_AGEDERR ? "[AgedErr]" : "",
2384 status & HFA384X_TX_STATUS_DISCON ? "[Discon]" : "",
2385 status & HFA384X_TX_STATUS_FORMERR ? "[FormErr]" : "",
2386 le16_to_cpu(txdesc.tx_control));
2387
2388 fc = le16_to_cpu(txdesc.frame_control);
2389 PDEBUG(DEBUG_EXTRA, " retry_count=%d tx_rate=%d fc=0x%04x "
2390 "(%s%s%s::%d%s%s)\n",
2391 txdesc.retry_count, txdesc.tx_rate, fc,
2392 ieee80211_is_mgmt(txdesc.frame_control) ? "Mgmt" : "",
2393 ieee80211_is_ctl(txdesc.frame_control) ? "Ctrl" : "",
2394 ieee80211_is_data(txdesc.frame_control) ? "Data" : "",
2395 (fc & IEEE80211_FCTL_STYPE) >> 4,
2396 ieee80211_has_tods(txdesc.frame_control) ? " ToDS" : "",
2397 ieee80211_has_fromds(txdesc.frame_control) ? " FromDS" : "");
2398 PDEBUG(DEBUG_EXTRA, " A1=%pM A2=%pM A3=%pM A4=%pM\n",
2399 txdesc.addr1, txdesc.addr2,
2400 txdesc.addr3, txdesc.addr4);
2401 }
2402
2403
2404 /* Called only as a tasklet (software IRQ) */
2405 static void hostap_info_tasklet(unsigned long data)
2406 {
2407 local_info_t *local = (local_info_t *) data;
2408 struct sk_buff *skb;
2409
2410 while ((skb = skb_dequeue(&local->info_list)) != NULL) {
2411 hostap_info_process(local, skb);
2412 dev_kfree_skb(skb);
2413 }
2414 }
2415
2416
2417 /* Called only as a tasklet (software IRQ) */
2418 static void prism2_info(local_info_t *local)
2419 {
2420 struct net_device *dev = local->dev;
2421 u16 fid;
2422 int res, left;
2423 struct hfa384x_info_frame info;
2424 struct sk_buff *skb;
2425
2426 fid = HFA384X_INW(HFA384X_INFOFID_OFF);
2427
2428 spin_lock(&local->baplock);
2429 res = hfa384x_setup_bap(dev, BAP0, fid, 0);
2430 if (!res)
2431 res = hfa384x_from_bap(dev, BAP0, &info, sizeof(info));
2432 if (res) {
2433 spin_unlock(&local->baplock);
2434 printk(KERN_DEBUG "Could not get info frame (fid=0x%04x)\n",
2435 fid);
2436 if (res == -ETIMEDOUT) {
2437 schedule_work(&local->reset_queue);
2438 }
2439 goto out;
2440 }
2441
2442 left = (le16_to_cpu(info.len) - 1) * 2;
2443
2444 if (info.len & cpu_to_le16(0x8000) || info.len == 0 || left > 2060) {
2445 /* data register seems to give 0x8000 in some error cases even
2446 * though busy bit is not set in offset register;
2447 * in addition, length must be at least 1 due to type field */
2448 spin_unlock(&local->baplock);
2449 printk(KERN_DEBUG "%s: Received info frame with invalid "
2450 "length 0x%04x (type 0x%04x)\n", dev->name,
2451 le16_to_cpu(info.len), le16_to_cpu(info.type));
2452 goto out;
2453 }
2454
2455 skb = dev_alloc_skb(sizeof(info) + left);
2456 if (skb == NULL) {
2457 spin_unlock(&local->baplock);
2458 printk(KERN_DEBUG "%s: Could not allocate skb for info "
2459 "frame\n", dev->name);
2460 goto out;
2461 }
2462
2463 memcpy(skb_put(skb, sizeof(info)), &info, sizeof(info));
2464 if (left > 0 && hfa384x_from_bap(dev, BAP0, skb_put(skb, left), left))
2465 {
2466 spin_unlock(&local->baplock);
2467 printk(KERN_WARNING "%s: Info frame read failed (fid=0x%04x, "
2468 "len=0x%04x, type=0x%04x\n", dev->name, fid,
2469 le16_to_cpu(info.len), le16_to_cpu(info.type));
2470 dev_kfree_skb(skb);
2471 goto out;
2472 }
2473 spin_unlock(&local->baplock);
2474
2475 skb_queue_tail(&local->info_list, skb);
2476 tasklet_schedule(&local->info_tasklet);
2477
2478 out:
2479 HFA384X_OUTW(HFA384X_EV_INFO, HFA384X_EVACK_OFF);
2480 }
2481
2482
2483 /* Called only as a tasklet (software IRQ) */
2484 static void hostap_bap_tasklet(unsigned long data)
2485 {
2486 local_info_t *local = (local_info_t *) data;
2487 struct net_device *dev = local->dev;
2488 u16 ev;
2489 int frames = 30;
2490
2491 if (local->func->card_present && !local->func->card_present(local))
2492 return;
2493
2494 set_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits);
2495
2496 /* Process all pending BAP events without generating new interrupts
2497 * for them */
2498 while (frames-- > 0) {
2499 ev = HFA384X_INW(HFA384X_EVSTAT_OFF);
2500 if (ev == 0xffff || !(ev & HFA384X_BAP0_EVENTS))
2501 break;
2502 if (ev & HFA384X_EV_RX)
2503 prism2_rx(local);
2504 if (ev & HFA384X_EV_INFO)
2505 prism2_info(local);
2506 if (ev & HFA384X_EV_TX)
2507 prism2_tx_ev(local);
2508 if (ev & HFA384X_EV_TXEXC)
2509 prism2_txexc(local);
2510 }
2511
2512 set_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits);
2513 clear_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits);
2514
2515 /* Enable interrupts for new BAP events */
2516 hfa384x_events_all(dev);
2517 clear_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits);
2518 }
2519
2520
2521 /* Called only from hardware IRQ */
2522 static void prism2_infdrop(struct net_device *dev)
2523 {
2524 static unsigned long last_inquire = 0;
2525
2526 PDEBUG(DEBUG_EXTRA, "%s: INFDROP event\n", dev->name);
2527
2528 /* some firmware versions seem to get stuck with
2529 * full CommTallies in high traffic load cases; every
2530 * packet will then cause INFDROP event and CommTallies
2531 * info frame will not be sent automatically. Try to
2532 * get out of this state by inquiring CommTallies. */
2533 if (!last_inquire || time_after(jiffies, last_inquire + HZ)) {
2534 hfa384x_cmd_callback(dev, HFA384X_CMDCODE_INQUIRE,
2535 HFA384X_INFO_COMMTALLIES, NULL, 0);
2536 last_inquire = jiffies;
2537 }
2538 }
2539
2540
2541 /* Called only from hardware IRQ */
2542 static void prism2_ev_tick(struct net_device *dev)
2543 {
2544 struct hostap_interface *iface;
2545 local_info_t *local;
2546 u16 evstat, inten;
2547 static int prev_stuck = 0;
2548
2549 iface = netdev_priv(dev);
2550 local = iface->local;
2551
2552 if (time_after(jiffies, local->last_tick_timer + 5 * HZ) &&
2553 local->last_tick_timer) {
2554 evstat = HFA384X_INW(HFA384X_EVSTAT_OFF);
2555 inten = HFA384X_INW(HFA384X_INTEN_OFF);
2556 if (!prev_stuck) {
2557 printk(KERN_INFO "%s: SW TICK stuck? "
2558 "bits=0x%lx EvStat=%04x IntEn=%04x\n",
2559 dev->name, local->bits, evstat, inten);
2560 }
2561 local->sw_tick_stuck++;
2562 if ((evstat & HFA384X_BAP0_EVENTS) &&
2563 (inten & HFA384X_BAP0_EVENTS)) {
2564 printk(KERN_INFO "%s: trying to recover from IRQ "
2565 "hang\n", dev->name);
2566 hfa384x_events_no_bap0(dev);
2567 }
2568 prev_stuck = 1;
2569 } else
2570 prev_stuck = 0;
2571 }
2572
2573
2574 /* Called only from hardware IRQ */
2575 static void prism2_check_magic(local_info_t *local)
2576 {
2577 /* at least PCI Prism2.5 with bus mastering seems to sometimes
2578 * return 0x0000 in SWSUPPORT0 for unknown reason, but re-reading the
2579 * register once or twice seems to get the correct value.. PCI cards
2580 * cannot anyway be removed during normal operation, so there is not
2581 * really any need for this verification with them. */
2582
2583 #ifndef PRISM2_PCI
2584 #ifndef final_version
2585 static unsigned long last_magic_err = 0;
2586 struct net_device *dev = local->dev;
2587
2588 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) {
2589 if (!local->hw_ready)
2590 return;
2591 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
2592 if (time_after(jiffies, last_magic_err + 10 * HZ)) {
2593 printk("%s: Interrupt, but SWSUPPORT0 does not match: "
2594 "%04X != %04X - card removed?\n", dev->name,
2595 HFA384X_INW(HFA384X_SWSUPPORT0_OFF),
2596 HFA384X_MAGIC);
2597 last_magic_err = jiffies;
2598 } else if (net_ratelimit()) {
2599 printk(KERN_DEBUG "%s: interrupt - SWSUPPORT0=%04x "
2600 "MAGIC=%04x\n", dev->name,
2601 HFA384X_INW(HFA384X_SWSUPPORT0_OFF),
2602 HFA384X_MAGIC);
2603 }
2604 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != 0xffff)
2605 schedule_work(&local->reset_queue);
2606 return;
2607 }
2608 #endif /* final_version */
2609 #endif /* !PRISM2_PCI */
2610 }
2611
2612
2613 /* Called only from hardware IRQ */
2614 static irqreturn_t prism2_interrupt(int irq, void *dev_id)
2615 {
2616 struct net_device *dev = dev_id;
2617 struct hostap_interface *iface;
2618 local_info_t *local;
2619 int events = 0;
2620 u16 ev;
2621
2622 iface = netdev_priv(dev);
2623 local = iface->local;
2624
2625 /* Detect early interrupt before driver is fully configured */
2626 spin_lock(&local->irq_init_lock);
2627 if (!dev->base_addr) {
2628 if (net_ratelimit()) {
2629 printk(KERN_DEBUG "%s: Interrupt, but dev not configured\n",
2630 dev->name);
2631 }
2632 spin_unlock(&local->irq_init_lock);
2633 return IRQ_HANDLED;
2634 }
2635 spin_unlock(&local->irq_init_lock);
2636
2637 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 0);
2638
2639 if (local->func->card_present && !local->func->card_present(local)) {
2640 if (net_ratelimit()) {
2641 printk(KERN_DEBUG "%s: Interrupt, but dev not OK\n",
2642 dev->name);
2643 }
2644 return IRQ_HANDLED;
2645 }
2646
2647 prism2_check_magic(local);
2648
2649 for (;;) {
2650 ev = HFA384X_INW(HFA384X_EVSTAT_OFF);
2651 if (ev == 0xffff) {
2652 if (local->shutdown)
2653 return IRQ_HANDLED;
2654 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
2655 printk(KERN_DEBUG "%s: prism2_interrupt: ev=0xffff\n",
2656 dev->name);
2657 return IRQ_HANDLED;
2658 }
2659
2660 ev &= HFA384X_INW(HFA384X_INTEN_OFF);
2661 if (ev == 0)
2662 break;
2663
2664 if (ev & HFA384X_EV_CMD) {
2665 prism2_cmd_ev(dev);
2666 }
2667
2668 /* Above events are needed even before hw is ready, but other
2669 * events should be skipped during initialization. This may
2670 * change for AllocEv if allocate_fid is implemented without
2671 * busy waiting. */
2672 if (!local->hw_ready || local->hw_resetting ||
2673 !local->dev_enabled) {
2674 ev = HFA384X_INW(HFA384X_EVSTAT_OFF);
2675 if (ev & HFA384X_EV_CMD)
2676 goto next_event;
2677 if ((ev & HFA384X_EVENT_MASK) == 0)
2678 return IRQ_HANDLED;
2679 if (local->dev_enabled && (ev & ~HFA384X_EV_TICK) &&
2680 net_ratelimit()) {
2681 printk(KERN_DEBUG "%s: prism2_interrupt: hw "
2682 "not ready; skipping events 0x%04x "
2683 "(IntEn=0x%04x)%s%s%s\n",
2684 dev->name, ev,
2685 HFA384X_INW(HFA384X_INTEN_OFF),
2686 !local->hw_ready ? " (!hw_ready)" : "",
2687 local->hw_resetting ?
2688 " (hw_resetting)" : "",
2689 !local->dev_enabled ?
2690 " (!dev_enabled)" : "");
2691 }
2692 HFA384X_OUTW(ev, HFA384X_EVACK_OFF);
2693 return IRQ_HANDLED;
2694 }
2695
2696 if (ev & HFA384X_EV_TICK) {
2697 prism2_ev_tick(dev);
2698 HFA384X_OUTW(HFA384X_EV_TICK, HFA384X_EVACK_OFF);
2699 }
2700
2701 if (ev & HFA384X_EV_ALLOC) {
2702 prism2_alloc_ev(dev);
2703 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF);
2704 }
2705
2706 /* Reading data from the card is quite time consuming, so do it
2707 * in tasklets. TX, TXEXC, RX, and INFO events will be ACKed
2708 * and unmasked after needed data has been read completely. */
2709 if (ev & HFA384X_BAP0_EVENTS) {
2710 hfa384x_events_no_bap0(dev);
2711 tasklet_schedule(&local->bap_tasklet);
2712 }
2713
2714 #ifndef final_version
2715 if (ev & HFA384X_EV_WTERR) {
2716 PDEBUG(DEBUG_EXTRA, "%s: WTERR event\n", dev->name);
2717 HFA384X_OUTW(HFA384X_EV_WTERR, HFA384X_EVACK_OFF);
2718 }
2719 #endif /* final_version */
2720
2721 if (ev & HFA384X_EV_INFDROP) {
2722 prism2_infdrop(dev);
2723 HFA384X_OUTW(HFA384X_EV_INFDROP, HFA384X_EVACK_OFF);
2724 }
2725
2726 next_event:
2727 events++;
2728 if (events >= PRISM2_MAX_INTERRUPT_EVENTS) {
2729 PDEBUG(DEBUG_EXTRA, "prism2_interrupt: >%d events "
2730 "(EvStat=0x%04x)\n",
2731 PRISM2_MAX_INTERRUPT_EVENTS,
2732 HFA384X_INW(HFA384X_EVSTAT_OFF));
2733 break;
2734 }
2735 }
2736 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 1);
2737 return IRQ_RETVAL(events);
2738 }
2739
2740
2741 static void prism2_check_sta_fw_version(local_info_t *local)
2742 {
2743 struct hfa384x_comp_ident comp;
2744 int id, variant, major, minor;
2745
2746 if (hfa384x_get_rid(local->dev, HFA384X_RID_STAID,
2747 &comp, sizeof(comp), 1) < 0)
2748 return;
2749
2750 local->fw_ap = 0;
2751 id = le16_to_cpu(comp.id);
2752 if (id != HFA384X_COMP_ID_STA) {
2753 if (id == HFA384X_COMP_ID_FW_AP)
2754 local->fw_ap = 1;
2755 return;
2756 }
2757
2758 major = __le16_to_cpu(comp.major);
2759 minor = __le16_to_cpu(comp.minor);
2760 variant = __le16_to_cpu(comp.variant);
2761 local->sta_fw_ver = PRISM2_FW_VER(major, minor, variant);
2762
2763 /* Station firmware versions before 1.4.x seem to have a bug in
2764 * firmware-based WEP encryption when using Host AP mode, so use
2765 * host_encrypt as a default for them. Firmware version 1.4.9 is the
2766 * first one that has been seen to produce correct encryption, but the
2767 * bug might be fixed before that (although, at least 1.4.2 is broken).
2768 */
2769 local->fw_encrypt_ok = local->sta_fw_ver >= PRISM2_FW_VER(1,4,9);
2770
2771 if (local->iw_mode == IW_MODE_MASTER && !local->host_encrypt &&
2772 !local->fw_encrypt_ok) {
2773 printk(KERN_DEBUG "%s: defaulting to host-based encryption as "
2774 "a workaround for firmware bug in Host AP mode WEP\n",
2775 local->dev->name);
2776 local->host_encrypt = 1;
2777 }
2778
2779 /* IEEE 802.11 standard compliant WDS frames (4 addresses) were broken
2780 * in station firmware versions before 1.5.x. With these versions, the
2781 * driver uses a workaround with bogus frame format (4th address after
2782 * the payload). This is not compatible with other AP devices. Since
2783 * the firmware bug is fixed in the latest station firmware versions,
2784 * automatically enable standard compliant mode for cards using station
2785 * firmware version 1.5.0 or newer. */
2786 if (local->sta_fw_ver >= PRISM2_FW_VER(1,5,0))
2787 local->wds_type |= HOSTAP_WDS_STANDARD_FRAME;
2788 else {
2789 printk(KERN_DEBUG "%s: defaulting to bogus WDS frame as a "
2790 "workaround for firmware bug in Host AP mode WDS\n",
2791 local->dev->name);
2792 }
2793
2794 hostap_check_sta_fw_version(local->ap, local->sta_fw_ver);
2795 }
2796
2797
2798 static void hostap_passive_scan(unsigned long data)
2799 {
2800 local_info_t *local = (local_info_t *) data;
2801 struct net_device *dev = local->dev;
2802 u16 chan;
2803
2804 if (local->passive_scan_interval <= 0)
2805 return;
2806
2807 if (local->passive_scan_state == PASSIVE_SCAN_LISTEN) {
2808 int max_tries = 16;
2809
2810 /* Even though host system does not really know when the WLAN
2811 * MAC is sending frames, try to avoid changing channels for
2812 * passive scanning when a host-generated frame is being
2813 * transmitted */
2814 if (test_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
2815 printk(KERN_DEBUG "%s: passive scan detected pending "
2816 "TX - delaying\n", dev->name);
2817 local->passive_scan_timer.expires = jiffies + HZ / 10;
2818 add_timer(&local->passive_scan_timer);
2819 return;
2820 }
2821
2822 do {
2823 local->passive_scan_channel++;
2824 if (local->passive_scan_channel > 14)
2825 local->passive_scan_channel = 1;
2826 max_tries--;
2827 } while (!(local->channel_mask &
2828 (1 << (local->passive_scan_channel - 1))) &&
2829 max_tries > 0);
2830
2831 if (max_tries == 0) {
2832 printk(KERN_INFO "%s: no allowed passive scan channels"
2833 " found\n", dev->name);
2834 return;
2835 }
2836
2837 printk(KERN_DEBUG "%s: passive scan channel %d\n",
2838 dev->name, local->passive_scan_channel);
2839 chan = local->passive_scan_channel;
2840 local->passive_scan_state = PASSIVE_SCAN_WAIT;
2841 local->passive_scan_timer.expires = jiffies + HZ / 10;
2842 } else {
2843 chan = local->channel;
2844 local->passive_scan_state = PASSIVE_SCAN_LISTEN;
2845 local->passive_scan_timer.expires = jiffies +
2846 local->passive_scan_interval * HZ;
2847 }
2848
2849 if (hfa384x_cmd_callback(dev, HFA384X_CMDCODE_TEST |
2850 (HFA384X_TEST_CHANGE_CHANNEL << 8),
2851 chan, NULL, 0))
2852 printk(KERN_ERR "%s: passive scan channel set %d "
2853 "failed\n", dev->name, chan);
2854
2855 add_timer(&local->passive_scan_timer);
2856 }
2857
2858
2859 /* Called only as a scheduled task when communications quality values should
2860 * be updated. */
2861 static void handle_comms_qual_update(struct work_struct *work)
2862 {
2863 local_info_t *local =
2864 container_of(work, local_info_t, comms_qual_update);
2865 prism2_update_comms_qual(local->dev);
2866 }
2867
2868
2869 /* Software watchdog - called as a timer. Hardware interrupt (Tick event) is
2870 * used to monitor that local->last_tick_timer is being updated. If not,
2871 * interrupt busy-loop is assumed and driver tries to recover by masking out
2872 * some events. */
2873 static void hostap_tick_timer(unsigned long data)
2874 {
2875 static unsigned long last_inquire = 0;
2876 local_info_t *local = (local_info_t *) data;
2877 local->last_tick_timer = jiffies;
2878
2879 /* Inquire CommTallies every 10 seconds to keep the statistics updated
2880 * more often during low load and when using 32-bit tallies. */
2881 if ((!last_inquire || time_after(jiffies, last_inquire + 10 * HZ)) &&
2882 !local->hw_downloading && local->hw_ready &&
2883 !local->hw_resetting && local->dev_enabled) {
2884 hfa384x_cmd_callback(local->dev, HFA384X_CMDCODE_INQUIRE,
2885 HFA384X_INFO_COMMTALLIES, NULL, 0);
2886 last_inquire = jiffies;
2887 }
2888
2889 if ((local->last_comms_qual_update == 0 ||
2890 time_after(jiffies, local->last_comms_qual_update + 10 * HZ)) &&
2891 (local->iw_mode == IW_MODE_INFRA ||
2892 local->iw_mode == IW_MODE_ADHOC)) {
2893 schedule_work(&local->comms_qual_update);
2894 }
2895
2896 local->tick_timer.expires = jiffies + 2 * HZ;
2897 add_timer(&local->tick_timer);
2898 }
2899
2900
2901 #ifndef PRISM2_NO_PROCFS_DEBUG
2902 static int prism2_registers_proc_read(char *page, char **start, off_t off,
2903 int count, int *eof, void *data)
2904 {
2905 char *p = page;
2906 local_info_t *local = (local_info_t *) data;
2907
2908 if (off != 0) {
2909 *eof = 1;
2910 return 0;
2911 }
2912
2913 #define SHOW_REG(n) \
2914 p += sprintf(p, #n "=%04x\n", hfa384x_read_reg(local->dev, HFA384X_##n##_OFF))
2915
2916 SHOW_REG(CMD);
2917 SHOW_REG(PARAM0);
2918 SHOW_REG(PARAM1);
2919 SHOW_REG(PARAM2);
2920 SHOW_REG(STATUS);
2921 SHOW_REG(RESP0);
2922 SHOW_REG(RESP1);
2923 SHOW_REG(RESP2);
2924 SHOW_REG(INFOFID);
2925 SHOW_REG(CONTROL);
2926 SHOW_REG(SELECT0);
2927 SHOW_REG(SELECT1);
2928 SHOW_REG(OFFSET0);
2929 SHOW_REG(OFFSET1);
2930 SHOW_REG(RXFID);
2931 SHOW_REG(ALLOCFID);
2932 SHOW_REG(TXCOMPLFID);
2933 SHOW_REG(SWSUPPORT0);
2934 SHOW_REG(SWSUPPORT1);
2935 SHOW_REG(SWSUPPORT2);
2936 SHOW_REG(EVSTAT);
2937 SHOW_REG(INTEN);
2938 SHOW_REG(EVACK);
2939 /* Do not read data registers, because they change the state of the
2940 * MAC (offset += 2) */
2941 /* SHOW_REG(DATA0); */
2942 /* SHOW_REG(DATA1); */
2943 SHOW_REG(AUXPAGE);
2944 SHOW_REG(AUXOFFSET);
2945 /* SHOW_REG(AUXDATA); */
2946 #ifdef PRISM2_PCI
2947 SHOW_REG(PCICOR);
2948 SHOW_REG(PCIHCR);
2949 SHOW_REG(PCI_M0_ADDRH);
2950 SHOW_REG(PCI_M0_ADDRL);
2951 SHOW_REG(PCI_M0_LEN);
2952 SHOW_REG(PCI_M0_CTL);
2953 SHOW_REG(PCI_STATUS);
2954 SHOW_REG(PCI_M1_ADDRH);
2955 SHOW_REG(PCI_M1_ADDRL);
2956 SHOW_REG(PCI_M1_LEN);
2957 SHOW_REG(PCI_M1_CTL);
2958 #endif /* PRISM2_PCI */
2959
2960 return (p - page);
2961 }
2962 #endif /* PRISM2_NO_PROCFS_DEBUG */
2963
2964
2965 struct set_tim_data {
2966 struct list_head list;
2967 int aid;
2968 int set;
2969 };
2970
2971 static int prism2_set_tim(struct net_device *dev, int aid, int set)
2972 {
2973 struct list_head *ptr;
2974 struct set_tim_data *new_entry;
2975 struct hostap_interface *iface;
2976 local_info_t *local;
2977
2978 iface = netdev_priv(dev);
2979 local = iface->local;
2980
2981 new_entry = kzalloc(sizeof(*new_entry), GFP_ATOMIC);
2982 if (new_entry == NULL) {
2983 printk(KERN_DEBUG "%s: prism2_set_tim: kmalloc failed\n",
2984 local->dev->name);
2985 return -ENOMEM;
2986 }
2987 new_entry->aid = aid;
2988 new_entry->set = set;
2989
2990 spin_lock_bh(&local->set_tim_lock);
2991 list_for_each(ptr, &local->set_tim_list) {
2992 struct set_tim_data *entry =
2993 list_entry(ptr, struct set_tim_data, list);
2994 if (entry->aid == aid) {
2995 PDEBUG(DEBUG_PS2, "%s: prism2_set_tim: aid=%d "
2996 "set=%d ==> %d\n",
2997 local->dev->name, aid, entry->set, set);
2998 entry->set = set;
2999 kfree(new_entry);
3000 new_entry = NULL;
3001 break;
3002 }
3003 }
3004 if (new_entry)
3005 list_add_tail(&new_entry->list, &local->set_tim_list);
3006 spin_unlock_bh(&local->set_tim_lock);
3007
3008 schedule_work(&local->set_tim_queue);
3009
3010 return 0;
3011 }
3012
3013
3014 static void handle_set_tim_queue(struct work_struct *work)
3015 {
3016 local_info_t *local = container_of(work, local_info_t, set_tim_queue);
3017 struct set_tim_data *entry;
3018 u16 val;
3019
3020 for (;;) {
3021 entry = NULL;
3022 spin_lock_bh(&local->set_tim_lock);
3023 if (!list_empty(&local->set_tim_list)) {
3024 entry = list_entry(local->set_tim_list.next,
3025 struct set_tim_data, list);
3026 list_del(&entry->list);
3027 }
3028 spin_unlock_bh(&local->set_tim_lock);
3029 if (!entry)
3030 break;
3031
3032 PDEBUG(DEBUG_PS2, "%s: handle_set_tim_queue: aid=%d set=%d\n",
3033 local->dev->name, entry->aid, entry->set);
3034
3035 val = entry->aid;
3036 if (entry->set)
3037 val |= 0x8000;
3038 if (hostap_set_word(local->dev, HFA384X_RID_CNFTIMCTRL, val)) {
3039 printk(KERN_DEBUG "%s: set_tim failed (aid=%d "
3040 "set=%d)\n",
3041 local->dev->name, entry->aid, entry->set);
3042 }
3043
3044 kfree(entry);
3045 }
3046 }
3047
3048
3049 static void prism2_clear_set_tim_queue(local_info_t *local)
3050 {
3051 struct list_head *ptr, *n;
3052
3053 list_for_each_safe(ptr, n, &local->set_tim_list) {
3054 struct set_tim_data *entry;
3055 entry = list_entry(ptr, struct set_tim_data, list);
3056 list_del(&entry->list);
3057 kfree(entry);
3058 }
3059 }
3060
3061
3062 /*
3063 * HostAP uses two layers of net devices, where the inner
3064 * layer gets called all the time from the outer layer.
3065 * This is a natural nesting, which needs a split lock type.
3066 */
3067 static struct lock_class_key hostap_netdev_xmit_lock_key;
3068 static struct lock_class_key hostap_netdev_addr_lock_key;
3069
3070 static void prism2_set_lockdep_class_one(struct net_device *dev,
3071 struct netdev_queue *txq,
3072 void *_unused)
3073 {
3074 lockdep_set_class(&txq->_xmit_lock,
3075 &hostap_netdev_xmit_lock_key);
3076 }
3077
3078 static void prism2_set_lockdep_class(struct net_device *dev)
3079 {
3080 lockdep_set_class(&dev->addr_list_lock,
3081 &hostap_netdev_addr_lock_key);
3082 netdev_for_each_tx_queue(dev, prism2_set_lockdep_class_one, NULL);
3083 }
3084
3085 static struct net_device *
3086 prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx,
3087 struct device *sdev)
3088 {
3089 struct net_device *dev;
3090 struct hostap_interface *iface;
3091 struct local_info *local;
3092 int len, i, ret;
3093
3094 if (funcs == NULL)
3095 return NULL;
3096
3097 len = strlen(dev_template);
3098 if (len >= IFNAMSIZ || strstr(dev_template, "%d") == NULL) {
3099 printk(KERN_WARNING "hostap: Invalid dev_template='%s'\n",
3100 dev_template);
3101 return NULL;
3102 }
3103
3104 len = sizeof(struct hostap_interface) +
3105 3 + sizeof(struct local_info) +
3106 3 + sizeof(struct ap_data);
3107
3108 dev = alloc_etherdev(len);
3109 if (dev == NULL)
3110 return NULL;
3111
3112 iface = netdev_priv(dev);
3113 local = (struct local_info *) ((((long) (iface + 1)) + 3) & ~3);
3114 local->ap = (struct ap_data *) ((((long) (local + 1)) + 3) & ~3);
3115 local->dev = iface->dev = dev;
3116 iface->local = local;
3117 iface->type = HOSTAP_INTERFACE_MASTER;
3118 INIT_LIST_HEAD(&local->hostap_interfaces);
3119
3120 local->hw_module = THIS_MODULE;
3121
3122 #ifdef PRISM2_IO_DEBUG
3123 local->io_debug_enabled = 1;
3124 #endif /* PRISM2_IO_DEBUG */
3125
3126 local->func = funcs;
3127 local->func->cmd = hfa384x_cmd;
3128 local->func->read_regs = hfa384x_read_regs;
3129 local->func->get_rid = hfa384x_get_rid;
3130 local->func->set_rid = hfa384x_set_rid;
3131 local->func->hw_enable = prism2_hw_enable;
3132 local->func->hw_config = prism2_hw_config;
3133 local->func->hw_reset = prism2_hw_reset;
3134 local->func->hw_shutdown = prism2_hw_shutdown;
3135 local->func->reset_port = prism2_reset_port;
3136 local->func->schedule_reset = prism2_schedule_reset;
3137 #ifdef PRISM2_DOWNLOAD_SUPPORT
3138 local->func->read_aux = prism2_download_aux_dump;
3139 local->func->download = prism2_download;
3140 #endif /* PRISM2_DOWNLOAD_SUPPORT */
3141 local->func->tx = prism2_tx_80211;
3142 local->func->set_tim = prism2_set_tim;
3143 local->func->need_tx_headroom = 0; /* no need to add txdesc in
3144 * skb->data (FIX: maybe for DMA bus
3145 * mastering? */
3146
3147 local->mtu = mtu;
3148
3149 rwlock_init(&local->iface_lock);
3150 spin_lock_init(&local->txfidlock);
3151 spin_lock_init(&local->cmdlock);
3152 spin_lock_init(&local->baplock);
3153 spin_lock_init(&local->lock);
3154 spin_lock_init(&local->irq_init_lock);
3155 mutex_init(&local->rid_bap_mtx);
3156
3157 if (card_idx < 0 || card_idx >= MAX_PARM_DEVICES)
3158 card_idx = 0;
3159 local->card_idx = card_idx;
3160
3161 len = strlen(essid);
3162 memcpy(local->essid, essid,
3163 len > MAX_SSID_LEN ? MAX_SSID_LEN : len);
3164 local->essid[MAX_SSID_LEN] = '\0';
3165 i = GET_INT_PARM(iw_mode, card_idx);
3166 if ((i >= IW_MODE_ADHOC && i <= IW_MODE_REPEAT) ||
3167 i == IW_MODE_MONITOR) {
3168 local->iw_mode = i;
3169 } else {
3170 printk(KERN_WARNING "prism2: Unknown iw_mode %d; using "
3171 "IW_MODE_MASTER\n", i);
3172 local->iw_mode = IW_MODE_MASTER;
3173 }
3174 local->channel = GET_INT_PARM(channel, card_idx);
3175 local->beacon_int = GET_INT_PARM(beacon_int, card_idx);
3176 local->dtim_period = GET_INT_PARM(dtim_period, card_idx);
3177 local->wds_max_connections = 16;
3178 local->tx_control = HFA384X_TX_CTRL_FLAGS;
3179 local->manual_retry_count = -1;
3180 local->rts_threshold = 2347;
3181 local->fragm_threshold = 2346;
3182 local->rssi_to_dBm = 100; /* default; to be overriden by
3183 * cnfDbmAdjust, if available */
3184 local->auth_algs = PRISM2_AUTH_OPEN | PRISM2_AUTH_SHARED_KEY;
3185 local->sram_type = -1;
3186 local->scan_channel_mask = 0xffff;
3187 local->monitor_type = PRISM2_MONITOR_RADIOTAP;
3188
3189 /* Initialize task queue structures */
3190 INIT_WORK(&local->reset_queue, handle_reset_queue);
3191 INIT_WORK(&local->set_multicast_list_queue,
3192 hostap_set_multicast_list_queue);
3193
3194 INIT_WORK(&local->set_tim_queue, handle_set_tim_queue);
3195 INIT_LIST_HEAD(&local->set_tim_list);
3196 spin_lock_init(&local->set_tim_lock);
3197
3198 INIT_WORK(&local->comms_qual_update, handle_comms_qual_update);
3199
3200 /* Initialize tasklets for handling hardware IRQ related operations
3201 * outside hw IRQ handler */
3202 #define HOSTAP_TASKLET_INIT(q, f, d) \
3203 do { memset((q), 0, sizeof(*(q))); (q)->func = (f); (q)->data = (d); } \
3204 while (0)
3205 HOSTAP_TASKLET_INIT(&local->bap_tasklet, hostap_bap_tasklet,
3206 (unsigned long) local);
3207
3208 HOSTAP_TASKLET_INIT(&local->info_tasklet, hostap_info_tasklet,
3209 (unsigned long) local);
3210 hostap_info_init(local);
3211
3212 HOSTAP_TASKLET_INIT(&local->rx_tasklet,
3213 hostap_rx_tasklet, (unsigned long) local);
3214 skb_queue_head_init(&local->rx_list);
3215
3216 HOSTAP_TASKLET_INIT(&local->sta_tx_exc_tasklet,
3217 hostap_sta_tx_exc_tasklet, (unsigned long) local);
3218 skb_queue_head_init(&local->sta_tx_exc_list);
3219
3220 INIT_LIST_HEAD(&local->cmd_queue);
3221 init_waitqueue_head(&local->hostscan_wq);
3222
3223 lib80211_crypt_info_init(&local->crypt_info, dev->name, &local->lock);
3224
3225 init_timer(&local->passive_scan_timer);
3226 local->passive_scan_timer.data = (unsigned long) local;
3227 local->passive_scan_timer.function = hostap_passive_scan;
3228
3229 init_timer(&local->tick_timer);
3230 local->tick_timer.data = (unsigned long) local;
3231 local->tick_timer.function = hostap_tick_timer;
3232 local->tick_timer.expires = jiffies + 2 * HZ;
3233 add_timer(&local->tick_timer);
3234
3235 INIT_LIST_HEAD(&local->bss_list);
3236
3237 hostap_setup_dev(dev, local, HOSTAP_INTERFACE_MASTER);
3238
3239 dev->type = ARPHRD_IEEE80211;
3240 dev->header_ops = &hostap_80211_ops;
3241
3242 rtnl_lock();
3243 ret = dev_alloc_name(dev, "wifi%d");
3244 SET_NETDEV_DEV(dev, sdev);
3245 if (ret >= 0)
3246 ret = register_netdevice(dev);
3247
3248 prism2_set_lockdep_class(dev);
3249 rtnl_unlock();
3250 if (ret < 0) {
3251 printk(KERN_WARNING "%s: register netdevice failed!\n",
3252 dev_info);
3253 goto fail;
3254 }
3255 printk(KERN_INFO "%s: Registered netdevice %s\n", dev_info, dev->name);
3256
3257 hostap_init_data(local);
3258 return dev;
3259
3260 fail:
3261 free_netdev(dev);
3262 return NULL;
3263 }
3264
3265
3266 static int hostap_hw_ready(struct net_device *dev)
3267 {
3268 struct hostap_interface *iface;
3269 struct local_info *local;
3270
3271 iface = netdev_priv(dev);
3272 local = iface->local;
3273 local->ddev = hostap_add_interface(local, HOSTAP_INTERFACE_MAIN, 0,
3274 "", dev_template);
3275
3276 if (local->ddev) {
3277 if (local->iw_mode == IW_MODE_INFRA ||
3278 local->iw_mode == IW_MODE_ADHOC) {
3279 netif_carrier_off(local->dev);
3280 netif_carrier_off(local->ddev);
3281 }
3282 hostap_init_proc(local);
3283 #ifndef PRISM2_NO_PROCFS_DEBUG
3284 create_proc_read_entry("registers", 0, local->proc,
3285 prism2_registers_proc_read, local);
3286 #endif /* PRISM2_NO_PROCFS_DEBUG */
3287 hostap_init_ap_proc(local);
3288 return 0;
3289 }
3290
3291 return -1;
3292 }
3293
3294
3295 static void prism2_free_local_data(struct net_device *dev)
3296 {
3297 struct hostap_tx_callback_info *tx_cb, *tx_cb_prev;
3298 int i;
3299 struct hostap_interface *iface;
3300 struct local_info *local;
3301 struct list_head *ptr, *n;
3302
3303 if (dev == NULL)
3304 return;
3305
3306 iface = netdev_priv(dev);
3307 local = iface->local;
3308
3309 /* Unregister all netdevs before freeing local data. */
3310 list_for_each_safe(ptr, n, &local->hostap_interfaces) {
3311 iface = list_entry(ptr, struct hostap_interface, list);
3312 if (iface->type == HOSTAP_INTERFACE_MASTER) {
3313 /* special handling for this interface below */
3314 continue;
3315 }
3316 hostap_remove_interface(iface->dev, 0, 1);
3317 }
3318
3319 unregister_netdev(local->dev);
3320
3321 flush_work_sync(&local->reset_queue);
3322 flush_work_sync(&local->set_multicast_list_queue);
3323 flush_work_sync(&local->set_tim_queue);
3324 #ifndef PRISM2_NO_STATION_MODES
3325 flush_work_sync(&local->info_queue);
3326 #endif
3327 flush_work_sync(&local->comms_qual_update);
3328
3329 lib80211_crypt_info_free(&local->crypt_info);
3330
3331 if (timer_pending(&local->passive_scan_timer))
3332 del_timer(&local->passive_scan_timer);
3333
3334 if (timer_pending(&local->tick_timer))
3335 del_timer(&local->tick_timer);
3336
3337 prism2_clear_cmd_queue(local);
3338
3339 skb_queue_purge(&local->info_list);
3340 skb_queue_purge(&local->rx_list);
3341 skb_queue_purge(&local->sta_tx_exc_list);
3342
3343 if (local->dev_enabled)
3344 prism2_callback(local, PRISM2_CALLBACK_DISABLE);
3345
3346 if (local->ap != NULL)
3347 hostap_free_data(local->ap);
3348
3349 #ifndef PRISM2_NO_PROCFS_DEBUG
3350 if (local->proc != NULL)
3351 remove_proc_entry("registers", local->proc);
3352 #endif /* PRISM2_NO_PROCFS_DEBUG */
3353 hostap_remove_proc(local);
3354
3355 tx_cb = local->tx_callback;
3356 while (tx_cb != NULL) {
3357 tx_cb_prev = tx_cb;
3358 tx_cb = tx_cb->next;
3359 kfree(tx_cb_prev);
3360 }
3361
3362 hostap_set_hostapd(local, 0, 0);
3363 hostap_set_hostapd_sta(local, 0, 0);
3364
3365 for (i = 0; i < PRISM2_FRAG_CACHE_LEN; i++) {
3366 if (local->frag_cache[i].skb != NULL)
3367 dev_kfree_skb(local->frag_cache[i].skb);
3368 }
3369
3370 #ifdef PRISM2_DOWNLOAD_SUPPORT
3371 prism2_download_free_data(local->dl_pri);
3372 prism2_download_free_data(local->dl_sec);
3373 #endif /* PRISM2_DOWNLOAD_SUPPORT */
3374
3375 prism2_clear_set_tim_queue(local);
3376
3377 list_for_each_safe(ptr, n, &local->bss_list) {
3378 struct hostap_bss_info *bss =
3379 list_entry(ptr, struct hostap_bss_info, list);
3380 kfree(bss);
3381 }
3382
3383 kfree(local->pda);
3384 kfree(local->last_scan_results);
3385 kfree(local->generic_elem);
3386
3387 free_netdev(local->dev);
3388 }
3389
3390
3391 #if (defined(PRISM2_PCI) && defined(CONFIG_PM)) || defined(PRISM2_PCCARD)
3392 static void prism2_suspend(struct net_device *dev)
3393 {
3394 struct hostap_interface *iface;
3395 struct local_info *local;
3396 union iwreq_data wrqu;
3397
3398 iface = netdev_priv(dev);
3399 local = iface->local;
3400
3401 /* Send disconnect event, e.g., to trigger reassociation after resume
3402 * if wpa_supplicant is used. */
3403 memset(&wrqu, 0, sizeof(wrqu));
3404 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3405 wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL);
3406
3407 /* Disable hardware and firmware */
3408 prism2_hw_shutdown(dev, 0);
3409 }
3410 #endif /* (PRISM2_PCI && CONFIG_PM) || PRISM2_PCCARD */
3411
3412
3413 /* These might at some point be compiled separately and used as separate
3414 * kernel modules or linked into one */
3415 #ifdef PRISM2_DOWNLOAD_SUPPORT
3416 #include "hostap_download.c"
3417 #endif /* PRISM2_DOWNLOAD_SUPPORT */
3418
3419 #ifdef PRISM2_CALLBACK
3420 /* External hostap_callback.c file can be used to, e.g., blink activity led.
3421 * This can use platform specific code and must define prism2_callback()
3422 * function (if PRISM2_CALLBACK is not defined, these function calls are not
3423 * used. */
3424 #include "hostap_callback.c"
3425 #endif /* PRISM2_CALLBACK */