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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Host AP (software wireless LAN access point) driver for
4 * Intersil Prism2/2.5/3.
5 *
6 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
7 * <j@w1.fi>
8 * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi>
9 *
10 * FIX:
11 * - there is currently no way of associating TX packets to correct wds device
12 * when TX Exc/OK event occurs, so all tx_packets and some
13 * tx_errors/tx_dropped are added to the main netdevice; using sw_support
14 * field in txdesc might be used to fix this (using Alloc event to increment
15 * tx_packets would need some further info in txfid table)
16 *
17 * Buffer Access Path (BAP) usage:
18 * Prism2 cards have two separate BAPs for accessing the card memory. These
19 * should allow concurrent access to two different frames and the driver
20 * previously used BAP0 for sending data and BAP1 for receiving data.
21 * However, there seems to be number of issues with concurrent access and at
22 * least one know hardware bug in using BAP0 and BAP1 concurrently with PCI
23 * Prism2.5. Therefore, the driver now only uses BAP0 for moving data between
24 * host and card memories. BAP0 accesses are protected with local->baplock
25 * (spin_lock_bh) to prevent concurrent use.
26 */
27
28
29
30#include <asm/delay.h>
31#include <linux/uaccess.h>
32
33#include <linux/slab.h>
34#include <linux/netdevice.h>
35#include <linux/etherdevice.h>
36#include <linux/proc_fs.h>
37#include <linux/seq_file.h>
38#include <linux/if_arp.h>
39#include <linux/delay.h>
40#include <linux/random.h>
41#include <linux/wait.h>
42#include <linux/sched/signal.h>
43#include <linux/rtnetlink.h>
44#include <linux/wireless.h>
45#include <net/iw_handler.h>
46#include <net/lib80211.h>
47#include <asm/irq.h>
48
49#include "hostap_80211.h"
50#include "hostap.h"
51#include "hostap_ap.h"
52
53
54/* #define final_version */
55
56static int mtu = 1500;
57module_param(mtu, int, 0444);
58MODULE_PARM_DESC(mtu, "Maximum transfer unit");
59
60static int channel[MAX_PARM_DEVICES] = { 3, DEF_INTS };
61module_param_array(channel, int, NULL, 0444);
62MODULE_PARM_DESC(channel, "Initial channel");
63
64static char essid[33] = "test";
65module_param_string(essid, essid, sizeof(essid), 0444);
66MODULE_PARM_DESC(essid, "Host AP's ESSID");
67
68static int iw_mode[MAX_PARM_DEVICES] = { IW_MODE_MASTER, DEF_INTS };
69module_param_array(iw_mode, int, NULL, 0444);
70MODULE_PARM_DESC(iw_mode, "Initial operation mode");
71
72static int beacon_int[MAX_PARM_DEVICES] = { 100, DEF_INTS };
73module_param_array(beacon_int, int, NULL, 0444);
74MODULE_PARM_DESC(beacon_int, "Beacon interval (1 = 1024 usec)");
75
76static int dtim_period[MAX_PARM_DEVICES] = { 1, DEF_INTS };
77module_param_array(dtim_period, int, NULL, 0444);
78MODULE_PARM_DESC(dtim_period, "DTIM period");
79
80static char dev_template[16] = "wlan%d";
81module_param_string(dev_template, dev_template, sizeof(dev_template), 0444);
82MODULE_PARM_DESC(dev_template, "Prefix for network device name (default: "
83 "wlan%d)");
84
85#ifdef final_version
86#define EXTRA_EVENTS_WTERR 0
87#else
88/* check WTERR events (Wait Time-out) in development versions */
89#define EXTRA_EVENTS_WTERR HFA384X_EV_WTERR
90#endif
91
92/* Events that will be using BAP0 */
93#define HFA384X_BAP0_EVENTS \
94 (HFA384X_EV_TXEXC | HFA384X_EV_RX | HFA384X_EV_INFO | HFA384X_EV_TX)
95
96/* event mask, i.e., events that will result in an interrupt */
97#define HFA384X_EVENT_MASK \
98 (HFA384X_BAP0_EVENTS | HFA384X_EV_ALLOC | HFA384X_EV_INFDROP | \
99 HFA384X_EV_CMD | HFA384X_EV_TICK | \
100 EXTRA_EVENTS_WTERR)
101
102/* Default TX control flags: use 802.11 headers and request interrupt for
103 * failed transmits. Frames that request ACK callback, will add
104 * _TX_OK flag and _ALT_RTRY flag may be used to select different retry policy.
105 */
106#define HFA384X_TX_CTRL_FLAGS \
107 (HFA384X_TX_CTRL_802_11 | HFA384X_TX_CTRL_TX_EX)
108
109
110/* ca. 1 usec */
111#define HFA384X_CMD_BUSY_TIMEOUT 5000
112#define HFA384X_BAP_BUSY_TIMEOUT 50000
113
114/* ca. 10 usec */
115#define HFA384X_CMD_COMPL_TIMEOUT 20000
116#define HFA384X_DL_COMPL_TIMEOUT 1000000
117
118/* Wait times for initialization; yield to other processes to avoid busy
119 * waiting for long time. */
120#define HFA384X_INIT_TIMEOUT (HZ / 2) /* 500 ms */
121#define HFA384X_ALLOC_COMPL_TIMEOUT (HZ / 20) /* 50 ms */
122
123
124static void prism2_hw_reset(struct net_device *dev);
125static void prism2_check_sta_fw_version(local_info_t *local);
126
127#ifdef PRISM2_DOWNLOAD_SUPPORT
128/* hostap_download.c */
129static const struct proc_ops prism2_download_aux_dump_proc_ops;
130static u8 * prism2_read_pda(struct net_device *dev);
131static int prism2_download(local_info_t *local,
132 struct prism2_download_param *param);
133static void prism2_download_free_data(struct prism2_download_data *dl);
134static int prism2_download_volatile(local_info_t *local,
135 struct prism2_download_data *param);
136static int prism2_download_genesis(local_info_t *local,
137 struct prism2_download_data *param);
138static int prism2_get_ram_size(local_info_t *local);
139#endif /* PRISM2_DOWNLOAD_SUPPORT */
140
141
142
143
144#ifndef final_version
145/* magic value written to SWSUPPORT0 reg. for detecting whether card is still
146 * present */
147#define HFA384X_MAGIC 0x8A32
148#endif
149
150static void hfa384x_read_regs(struct net_device *dev,
151 struct hfa384x_regs *regs)
152{
153 regs->cmd = HFA384X_INW(HFA384X_CMD_OFF);
154 regs->evstat = HFA384X_INW(HFA384X_EVSTAT_OFF);
155 regs->offset0 = HFA384X_INW(HFA384X_OFFSET0_OFF);
156 regs->offset1 = HFA384X_INW(HFA384X_OFFSET1_OFF);
157 regs->swsupport0 = HFA384X_INW(HFA384X_SWSUPPORT0_OFF);
158}
159
160
161/**
162 * __hostap_cmd_queue_free - Free Prism2 command queue entry (private)
163 * @local: pointer to private Host AP driver data
164 * @entry: Prism2 command queue entry to be freed
165 * @del_req: request the entry to be removed
166 *
167 * Internal helper function for freeing Prism2 command queue entries.
168 * Caller must have acquired local->cmdlock before calling this function.
169 */
170static inline void __hostap_cmd_queue_free(local_info_t *local,
171 struct hostap_cmd_queue *entry,
172 int del_req)
173{
174 if (del_req) {
175 entry->del_req = 1;
176 if (!list_empty(&entry->list)) {
177 list_del_init(&entry->list);
178 local->cmd_queue_len--;
179 }
180 }
181
182 if (refcount_dec_and_test(&entry->usecnt) && entry->del_req)
183 kfree(entry);
184}
185
186
187/**
188 * hostap_cmd_queue_free - Free Prism2 command queue entry
189 * @local: pointer to private Host AP driver data
190 * @entry: Prism2 command queue entry to be freed
191 * @del_req: request the entry to be removed
192 *
193 * Free a Prism2 command queue entry.
194 */
195static inline void hostap_cmd_queue_free(local_info_t *local,
196 struct hostap_cmd_queue *entry,
197 int del_req)
198{
199 unsigned long flags;
200
201 spin_lock_irqsave(&local->cmdlock, flags);
202 __hostap_cmd_queue_free(local, entry, del_req);
203 spin_unlock_irqrestore(&local->cmdlock, flags);
204}
205
206
207/**
208 * prism2_clear_cmd_queue - Free all pending Prism2 command queue entries
209 * @local: pointer to private Host AP driver data
210 */
211static void prism2_clear_cmd_queue(local_info_t *local)
212{
213 struct list_head *ptr, *n;
214 unsigned long flags;
215 struct hostap_cmd_queue *entry;
216
217 spin_lock_irqsave(&local->cmdlock, flags);
218 list_for_each_safe(ptr, n, &local->cmd_queue) {
219 entry = list_entry(ptr, struct hostap_cmd_queue, list);
220 refcount_inc(&entry->usecnt);
221 printk(KERN_DEBUG "%s: removed pending cmd_queue entry "
222 "(type=%d, cmd=0x%04x, param0=0x%04x)\n",
223 local->dev->name, entry->type, entry->cmd,
224 entry->param0);
225 __hostap_cmd_queue_free(local, entry, 1);
226 }
227 if (local->cmd_queue_len) {
228 /* This should not happen; print debug message and clear
229 * queue length. */
230 printk(KERN_DEBUG "%s: cmd_queue_len (%d) not zero after "
231 "flush\n", local->dev->name, local->cmd_queue_len);
232 local->cmd_queue_len = 0;
233 }
234 spin_unlock_irqrestore(&local->cmdlock, flags);
235}
236
237
238/**
239 * hfa384x_cmd_issue - Issue a Prism2 command to the hardware
240 * @dev: pointer to net_device
241 * @entry: Prism2 command queue entry to be issued
242 */
243static int hfa384x_cmd_issue(struct net_device *dev,
244 struct hostap_cmd_queue *entry)
245{
246 struct hostap_interface *iface;
247 local_info_t *local;
248 int tries;
249 u16 reg;
250 unsigned long flags;
251
252 iface = netdev_priv(dev);
253 local = iface->local;
254
255 if (local->func->card_present && !local->func->card_present(local))
256 return -ENODEV;
257
258 if (entry->issued) {
259 printk(KERN_DEBUG "%s: driver bug - re-issuing command @%p\n",
260 dev->name, entry);
261 }
262
263 /* wait until busy bit is clear; this should always be clear since the
264 * commands are serialized */
265 tries = HFA384X_CMD_BUSY_TIMEOUT;
266 while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) {
267 tries--;
268 udelay(1);
269 }
270#ifndef final_version
271 if (tries != HFA384X_CMD_BUSY_TIMEOUT) {
272 prism2_io_debug_error(dev, 1);
273 printk(KERN_DEBUG "%s: hfa384x_cmd_issue: cmd reg was busy "
274 "for %d usec\n", dev->name,
275 HFA384X_CMD_BUSY_TIMEOUT - tries);
276 }
277#endif
278 if (tries == 0) {
279 reg = HFA384X_INW(HFA384X_CMD_OFF);
280 prism2_io_debug_error(dev, 2);
281 printk(KERN_DEBUG "%s: hfa384x_cmd_issue - timeout - "
282 "reg=0x%04x\n", dev->name, reg);
283 return -ETIMEDOUT;
284 }
285
286 /* write command */
287 spin_lock_irqsave(&local->cmdlock, flags);
288 HFA384X_OUTW(entry->param0, HFA384X_PARAM0_OFF);
289 HFA384X_OUTW(entry->param1, HFA384X_PARAM1_OFF);
290 HFA384X_OUTW(entry->cmd, HFA384X_CMD_OFF);
291 entry->issued = 1;
292 spin_unlock_irqrestore(&local->cmdlock, flags);
293
294 return 0;
295}
296
297
298/**
299 * hfa384x_cmd - Issue a Prism2 command and wait (sleep) for completion
300 * @dev: pointer to net_device
301 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
302 * @param0: value for Param0 register
303 * @param1: value for Param1 register (pointer; %NULL if not used)
304 * @resp0: pointer for Resp0 data or %NULL if Resp0 is not needed
305 *
306 * Issue given command (possibly after waiting in command queue) and sleep
307 * until the command is completed (or timed out or interrupted). This can be
308 * called only from user process context.
309 */
310static int hfa384x_cmd(struct net_device *dev, u16 cmd, u16 param0,
311 u16 *param1, u16 *resp0)
312{
313 struct hostap_interface *iface;
314 local_info_t *local;
315 int err, res, issue, issued = 0;
316 unsigned long flags;
317 struct hostap_cmd_queue *entry;
318 DECLARE_WAITQUEUE(wait, current);
319
320 iface = netdev_priv(dev);
321 local = iface->local;
322
323 if (in_interrupt()) {
324 printk(KERN_DEBUG "%s: hfa384x_cmd called from interrupt "
325 "context\n", dev->name);
326 return -1;
327 }
328
329 if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN) {
330 printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n",
331 dev->name);
332 return -1;
333 }
334
335 if (signal_pending(current))
336 return -EINTR;
337
338 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
339 if (entry == NULL)
340 return -ENOMEM;
341
342 refcount_set(&entry->usecnt, 1);
343 entry->type = CMD_SLEEP;
344 entry->cmd = cmd;
345 entry->param0 = param0;
346 if (param1)
347 entry->param1 = *param1;
348 init_waitqueue_head(&entry->compl);
349
350 /* prepare to wait for command completion event, but do not sleep yet
351 */
352 add_wait_queue(&entry->compl, &wait);
353 set_current_state(TASK_INTERRUPTIBLE);
354
355 spin_lock_irqsave(&local->cmdlock, flags);
356 issue = list_empty(&local->cmd_queue);
357 if (issue)
358 entry->issuing = 1;
359 list_add_tail(&entry->list, &local->cmd_queue);
360 local->cmd_queue_len++;
361 spin_unlock_irqrestore(&local->cmdlock, flags);
362
363 err = 0;
364 if (!issue)
365 goto wait_completion;
366
367 if (signal_pending(current))
368 err = -EINTR;
369
370 if (!err) {
371 if (hfa384x_cmd_issue(dev, entry))
372 err = -ETIMEDOUT;
373 else
374 issued = 1;
375 }
376
377 wait_completion:
378 if (!err && entry->type != CMD_COMPLETED) {
379 /* sleep until command is completed or timed out */
380 res = schedule_timeout(2 * HZ);
381 } else
382 res = -1;
383
384 if (!err && signal_pending(current))
385 err = -EINTR;
386
387 if (err && issued) {
388 /* the command was issued, so a CmdCompl event should occur
389 * soon; however, there's a pending signal and
390 * schedule_timeout() would be interrupted; wait a short period
391 * of time to avoid removing entry from the list before
392 * CmdCompl event */
393 udelay(300);
394 }
395
396 set_current_state(TASK_RUNNING);
397 remove_wait_queue(&entry->compl, &wait);
398
399 /* If entry->list is still in the list, it must be removed
400 * first and in this case prism2_cmd_ev() does not yet have
401 * local reference to it, and the data can be kfree()'d
402 * here. If the command completion event is still generated,
403 * it will be assigned to next (possibly) pending command, but
404 * the driver will reset the card anyway due to timeout
405 *
406 * If the entry is not in the list prism2_cmd_ev() has a local
407 * reference to it, but keeps cmdlock as long as the data is
408 * needed, so the data can be kfree()'d here. */
409
410 /* FIX: if the entry->list is in the list, it has not been completed
411 * yet, so removing it here is somewhat wrong.. this could cause
412 * references to freed memory and next list_del() causing NULL pointer
413 * dereference.. it would probably be better to leave the entry in the
414 * list and the list should be emptied during hw reset */
415
416 spin_lock_irqsave(&local->cmdlock, flags);
417 if (!list_empty(&entry->list)) {
418 printk(KERN_DEBUG "%s: hfa384x_cmd: entry still in list? "
419 "(entry=%p, type=%d, res=%d)\n", dev->name, entry,
420 entry->type, res);
421 list_del_init(&entry->list);
422 local->cmd_queue_len--;
423 }
424 spin_unlock_irqrestore(&local->cmdlock, flags);
425
426 if (err) {
427 printk(KERN_DEBUG "%s: hfa384x_cmd: interrupted; err=%d\n",
428 dev->name, err);
429 res = err;
430 goto done;
431 }
432
433 if (entry->type != CMD_COMPLETED) {
434 u16 reg = HFA384X_INW(HFA384X_EVSTAT_OFF);
435 printk(KERN_DEBUG "%s: hfa384x_cmd: command was not "
436 "completed (res=%d, entry=%p, type=%d, cmd=0x%04x, "
437 "param0=0x%04x, EVSTAT=%04x INTEN=%04x)\n", dev->name,
438 res, entry, entry->type, entry->cmd, entry->param0, reg,
439 HFA384X_INW(HFA384X_INTEN_OFF));
440 if (reg & HFA384X_EV_CMD) {
441 /* Command completion event is pending, but the
442 * interrupt was not delivered - probably an issue
443 * with pcmcia-cs configuration. */
444 printk(KERN_WARNING "%s: interrupt delivery does not "
445 "seem to work\n", dev->name);
446 }
447 prism2_io_debug_error(dev, 3);
448 res = -ETIMEDOUT;
449 goto done;
450 }
451
452 if (resp0 != NULL)
453 *resp0 = entry->resp0;
454#ifndef final_version
455 if (entry->res) {
456 printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x, "
457 "resp0=0x%04x\n",
458 dev->name, cmd, entry->res, entry->resp0);
459 }
460#endif /* final_version */
461
462 res = entry->res;
463 done:
464 hostap_cmd_queue_free(local, entry, 1);
465 return res;
466}
467
468
469/**
470 * hfa384x_cmd_callback - Issue a Prism2 command; callback when completed
471 * @dev: pointer to net_device
472 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
473 * @param0: value for Param0 register
474 * @callback: command completion callback function (%NULL = no callback)
475 * @context: context data to be given to the callback function
476 *
477 * Issue given command (possibly after waiting in command queue) and use
478 * callback function to indicate command completion. This can be called both
479 * from user and interrupt context. The callback function will be called in
480 * hardware IRQ context. It can be %NULL, when no function is called when
481 * command is completed.
482 */
483static int hfa384x_cmd_callback(struct net_device *dev, u16 cmd, u16 param0,
484 void (*callback)(struct net_device *dev,
485 long context, u16 resp0,
486 u16 status),
487 long context)
488{
489 struct hostap_interface *iface;
490 local_info_t *local;
491 int issue, ret;
492 unsigned long flags;
493 struct hostap_cmd_queue *entry;
494
495 iface = netdev_priv(dev);
496 local = iface->local;
497
498 if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN + 2) {
499 printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n",
500 dev->name);
501 return -1;
502 }
503
504 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
505 if (entry == NULL)
506 return -ENOMEM;
507
508 refcount_set(&entry->usecnt, 1);
509 entry->type = CMD_CALLBACK;
510 entry->cmd = cmd;
511 entry->param0 = param0;
512 entry->callback = callback;
513 entry->context = context;
514
515 spin_lock_irqsave(&local->cmdlock, flags);
516 issue = list_empty(&local->cmd_queue);
517 if (issue)
518 entry->issuing = 1;
519 list_add_tail(&entry->list, &local->cmd_queue);
520 local->cmd_queue_len++;
521 spin_unlock_irqrestore(&local->cmdlock, flags);
522
523 if (issue && hfa384x_cmd_issue(dev, entry))
524 ret = -ETIMEDOUT;
525 else
526 ret = 0;
527
528 hostap_cmd_queue_free(local, entry, ret);
529
530 return ret;
531}
532
533
534/**
535 * __hfa384x_cmd_no_wait - Issue a Prism2 command (private)
536 * @dev: pointer to net_device
537 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
538 * @param0: value for Param0 register
539 * @io_debug_num: I/O debug error number
540 *
541 * Shared helper function for hfa384x_cmd_wait() and hfa384x_cmd_no_wait().
542 */
543static int __hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, u16 param0,
544 int io_debug_num)
545{
546 int tries;
547 u16 reg;
548
549 /* wait until busy bit is clear; this should always be clear since the
550 * commands are serialized */
551 tries = HFA384X_CMD_BUSY_TIMEOUT;
552 while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) {
553 tries--;
554 udelay(1);
555 }
556 if (tries == 0) {
557 reg = HFA384X_INW(HFA384X_CMD_OFF);
558 prism2_io_debug_error(dev, io_debug_num);
559 printk(KERN_DEBUG "%s: __hfa384x_cmd_no_wait(%d) - timeout - "
560 "reg=0x%04x\n", dev->name, io_debug_num, reg);
561 return -ETIMEDOUT;
562 }
563
564 /* write command */
565 HFA384X_OUTW(param0, HFA384X_PARAM0_OFF);
566 HFA384X_OUTW(cmd, HFA384X_CMD_OFF);
567
568 return 0;
569}
570
571
572/**
573 * hfa384x_cmd_wait - Issue a Prism2 command and busy wait for completion
574 * @dev: pointer to net_device
575 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
576 * @param0: value for Param0 register
577 */
578static int hfa384x_cmd_wait(struct net_device *dev, u16 cmd, u16 param0)
579{
580 int res, tries;
581 u16 reg;
582
583 res = __hfa384x_cmd_no_wait(dev, cmd, param0, 4);
584 if (res)
585 return res;
586
587 /* wait for command completion */
588 if ((cmd & HFA384X_CMDCODE_MASK) == HFA384X_CMDCODE_DOWNLOAD)
589 tries = HFA384X_DL_COMPL_TIMEOUT;
590 else
591 tries = HFA384X_CMD_COMPL_TIMEOUT;
592
593 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) &&
594 tries > 0) {
595 tries--;
596 udelay(10);
597 }
598 if (tries == 0) {
599 reg = HFA384X_INW(HFA384X_EVSTAT_OFF);
600 prism2_io_debug_error(dev, 5);
601 printk(KERN_DEBUG "%s: hfa384x_cmd_wait - timeout2 - "
602 "reg=0x%04x\n", dev->name, reg);
603 return -ETIMEDOUT;
604 }
605
606 res = (HFA384X_INW(HFA384X_STATUS_OFF) &
607 (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | BIT(9) |
608 BIT(8))) >> 8;
609#ifndef final_version
610 if (res) {
611 printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x\n",
612 dev->name, cmd, res);
613 }
614#endif
615
616 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
617
618 return res;
619}
620
621
622/**
623 * hfa384x_cmd_no_wait - Issue a Prism2 command; do not wait for completion
624 * @dev: pointer to net_device
625 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
626 * @param0: value for Param0 register
627 */
628static inline int hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd,
629 u16 param0)
630{
631 return __hfa384x_cmd_no_wait(dev, cmd, param0, 6);
632}
633
634
635/**
636 * prism2_cmd_ev - Prism2 command completion event handler
637 * @dev: pointer to net_device
638 *
639 * Interrupt handler for command completion events. Called by the main
640 * interrupt handler in hardware IRQ context. Read Resp0 and status registers
641 * from the hardware and ACK the event. Depending on the issued command type
642 * either wake up the sleeping process that is waiting for command completion
643 * or call the callback function. Issue the next command, if one is pending.
644 */
645static void prism2_cmd_ev(struct net_device *dev)
646{
647 struct hostap_interface *iface;
648 local_info_t *local;
649 struct hostap_cmd_queue *entry = NULL;
650
651 iface = netdev_priv(dev);
652 local = iface->local;
653
654 spin_lock(&local->cmdlock);
655 if (!list_empty(&local->cmd_queue)) {
656 entry = list_entry(local->cmd_queue.next,
657 struct hostap_cmd_queue, list);
658 refcount_inc(&entry->usecnt);
659 list_del_init(&entry->list);
660 local->cmd_queue_len--;
661
662 if (!entry->issued) {
663 printk(KERN_DEBUG "%s: Command completion event, but "
664 "cmd not issued\n", dev->name);
665 __hostap_cmd_queue_free(local, entry, 1);
666 entry = NULL;
667 }
668 }
669 spin_unlock(&local->cmdlock);
670
671 if (!entry) {
672 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
673 printk(KERN_DEBUG "%s: Command completion event, but no "
674 "pending commands\n", dev->name);
675 return;
676 }
677
678 entry->resp0 = HFA384X_INW(HFA384X_RESP0_OFF);
679 entry->res = (HFA384X_INW(HFA384X_STATUS_OFF) &
680 (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) |
681 BIT(9) | BIT(8))) >> 8;
682 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
683
684 /* TODO: rest of the CmdEv handling could be moved to tasklet */
685 if (entry->type == CMD_SLEEP) {
686 entry->type = CMD_COMPLETED;
687 wake_up_interruptible(&entry->compl);
688 } else if (entry->type == CMD_CALLBACK) {
689 if (entry->callback)
690 entry->callback(dev, entry->context, entry->resp0,
691 entry->res);
692 } else {
693 printk(KERN_DEBUG "%s: Invalid command completion type %d\n",
694 dev->name, entry->type);
695 }
696 hostap_cmd_queue_free(local, entry, 1);
697
698 /* issue next command, if pending */
699 entry = NULL;
700 spin_lock(&local->cmdlock);
701 if (!list_empty(&local->cmd_queue)) {
702 entry = list_entry(local->cmd_queue.next,
703 struct hostap_cmd_queue, list);
704 if (entry->issuing) {
705 /* hfa384x_cmd() has already started issuing this
706 * command, so do not start here */
707 entry = NULL;
708 }
709 if (entry)
710 refcount_inc(&entry->usecnt);
711 }
712 spin_unlock(&local->cmdlock);
713
714 if (entry) {
715 /* issue next command; if command issuing fails, remove the
716 * entry from cmd_queue */
717 int res = hfa384x_cmd_issue(dev, entry);
718 spin_lock(&local->cmdlock);
719 __hostap_cmd_queue_free(local, entry, res);
720 spin_unlock(&local->cmdlock);
721 }
722}
723
724
725static int hfa384x_wait_offset(struct net_device *dev, u16 o_off)
726{
727 int tries = HFA384X_BAP_BUSY_TIMEOUT;
728 int res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY;
729
730 while (res && tries > 0) {
731 tries--;
732 udelay(1);
733 res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY;
734 }
735 return res;
736}
737
738
739/* Offset must be even */
740static int hfa384x_setup_bap(struct net_device *dev, u16 bap, u16 id,
741 int offset)
742{
743 u16 o_off, s_off;
744 int ret = 0;
745
746 if (offset % 2 || bap > 1)
747 return -EINVAL;
748
749 if (bap == BAP1) {
750 o_off = HFA384X_OFFSET1_OFF;
751 s_off = HFA384X_SELECT1_OFF;
752 } else {
753 o_off = HFA384X_OFFSET0_OFF;
754 s_off = HFA384X_SELECT0_OFF;
755 }
756
757 if (hfa384x_wait_offset(dev, o_off)) {
758 prism2_io_debug_error(dev, 7);
759 printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout before\n",
760 dev->name);
761 ret = -ETIMEDOUT;
762 goto out;
763 }
764
765 HFA384X_OUTW(id, s_off);
766 HFA384X_OUTW(offset, o_off);
767
768 if (hfa384x_wait_offset(dev, o_off)) {
769 prism2_io_debug_error(dev, 8);
770 printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout after\n",
771 dev->name);
772 ret = -ETIMEDOUT;
773 goto out;
774 }
775#ifndef final_version
776 if (HFA384X_INW(o_off) & HFA384X_OFFSET_ERR) {
777 prism2_io_debug_error(dev, 9);
778 printk(KERN_DEBUG "%s: hfa384x_setup_bap - offset error "
779 "(%d,0x04%x,%d); reg=0x%04x\n",
780 dev->name, bap, id, offset, HFA384X_INW(o_off));
781 ret = -EINVAL;
782 }
783#endif
784
785 out:
786 return ret;
787}
788
789
790static int hfa384x_get_rid(struct net_device *dev, u16 rid, void *buf, int len,
791 int exact_len)
792{
793 struct hostap_interface *iface;
794 local_info_t *local;
795 int res, rlen = 0;
796 struct hfa384x_rid_hdr rec;
797
798 iface = netdev_priv(dev);
799 local = iface->local;
800
801 if (local->no_pri) {
802 printk(KERN_DEBUG "%s: cannot get RID %04x (len=%d) - no PRI "
803 "f/w\n", dev->name, rid, len);
804 return -ENOTTY; /* Well.. not really correct, but return
805 * something unique enough.. */
806 }
807
808 if ((local->func->card_present && !local->func->card_present(local)) ||
809 local->hw_downloading)
810 return -ENODEV;
811
812 res = mutex_lock_interruptible(&local->rid_bap_mtx);
813 if (res)
814 return res;
815
816 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS, rid, NULL, NULL);
817 if (res) {
818 printk(KERN_DEBUG "%s: hfa384x_get_rid: CMDCODE_ACCESS failed "
819 "(res=%d, rid=%04x, len=%d)\n",
820 dev->name, res, rid, len);
821 mutex_unlock(&local->rid_bap_mtx);
822 return res;
823 }
824
825 spin_lock_bh(&local->baplock);
826
827 res = hfa384x_setup_bap(dev, BAP0, rid, 0);
828 if (res)
829 goto unlock;
830
831 res = hfa384x_from_bap(dev, BAP0, &rec, sizeof(rec));
832 if (res)
833 goto unlock;
834
835 if (le16_to_cpu(rec.len) == 0) {
836 /* RID not available */
837 res = -ENODATA;
838 goto unlock;
839 }
840
841 rlen = (le16_to_cpu(rec.len) - 1) * 2;
842 if (exact_len && rlen != len) {
843 printk(KERN_DEBUG "%s: hfa384x_get_rid - RID len mismatch: "
844 "rid=0x%04x, len=%d (expected %d)\n",
845 dev->name, rid, rlen, len);
846 res = -ENODATA;
847 }
848
849 res = hfa384x_from_bap(dev, BAP0, buf, len);
850
851unlock:
852 spin_unlock_bh(&local->baplock);
853 mutex_unlock(&local->rid_bap_mtx);
854
855 if (res) {
856 if (res != -ENODATA)
857 printk(KERN_DEBUG "%s: hfa384x_get_rid (rid=%04x, "
858 "len=%d) - failed - res=%d\n", dev->name, rid,
859 len, res);
860 if (res == -ETIMEDOUT)
861 prism2_hw_reset(dev);
862 return res;
863 }
864
865 return rlen;
866}
867
868
869static int hfa384x_set_rid(struct net_device *dev, u16 rid, void *buf, int len)
870{
871 struct hostap_interface *iface;
872 local_info_t *local;
873 struct hfa384x_rid_hdr rec;
874 int res;
875
876 iface = netdev_priv(dev);
877 local = iface->local;
878
879 if (local->no_pri) {
880 printk(KERN_DEBUG "%s: cannot set RID %04x (len=%d) - no PRI "
881 "f/w\n", dev->name, rid, len);
882 return -ENOTTY; /* Well.. not really correct, but return
883 * something unique enough.. */
884 }
885
886 if ((local->func->card_present && !local->func->card_present(local)) ||
887 local->hw_downloading)
888 return -ENODEV;
889
890 rec.rid = cpu_to_le16(rid);
891 /* RID len in words and +1 for rec.rid */
892 rec.len = cpu_to_le16(len / 2 + len % 2 + 1);
893
894 res = mutex_lock_interruptible(&local->rid_bap_mtx);
895 if (res)
896 return res;
897
898 spin_lock_bh(&local->baplock);
899 res = hfa384x_setup_bap(dev, BAP0, rid, 0);
900 if (!res)
901 res = hfa384x_to_bap(dev, BAP0, &rec, sizeof(rec));
902 if (!res)
903 res = hfa384x_to_bap(dev, BAP0, buf, len);
904 spin_unlock_bh(&local->baplock);
905
906 if (res) {
907 printk(KERN_DEBUG "%s: hfa384x_set_rid (rid=%04x, len=%d) - "
908 "failed - res=%d\n", dev->name, rid, len, res);
909 mutex_unlock(&local->rid_bap_mtx);
910 return res;
911 }
912
913 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS_WRITE, rid, NULL, NULL);
914 mutex_unlock(&local->rid_bap_mtx);
915
916 if (res) {
917 printk(KERN_DEBUG "%s: hfa384x_set_rid: CMDCODE_ACCESS_WRITE "
918 "failed (res=%d, rid=%04x, len=%d)\n",
919 dev->name, res, rid, len);
920
921 if (res == -ETIMEDOUT)
922 prism2_hw_reset(dev);
923 }
924
925 return res;
926}
927
928
929static void hfa384x_disable_interrupts(struct net_device *dev)
930{
931 /* disable interrupts and clear event status */
932 HFA384X_OUTW(0, HFA384X_INTEN_OFF);
933 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
934}
935
936
937static void hfa384x_enable_interrupts(struct net_device *dev)
938{
939 /* ack pending events and enable interrupts from selected events */
940 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
941 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF);
942}
943
944
945static void hfa384x_events_no_bap0(struct net_device *dev)
946{
947 HFA384X_OUTW(HFA384X_EVENT_MASK & ~HFA384X_BAP0_EVENTS,
948 HFA384X_INTEN_OFF);
949}
950
951
952static void hfa384x_events_all(struct net_device *dev)
953{
954 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF);
955}
956
957
958static void hfa384x_events_only_cmd(struct net_device *dev)
959{
960 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_INTEN_OFF);
961}
962
963
964static u16 hfa384x_allocate_fid(struct net_device *dev, int len)
965{
966 u16 fid;
967 unsigned long delay;
968
969 /* FIX: this could be replace with hfa384x_cmd() if the Alloc event
970 * below would be handled like CmdCompl event (sleep here, wake up from
971 * interrupt handler */
972 if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_ALLOC, len)) {
973 printk(KERN_DEBUG "%s: cannot allocate fid, len=%d\n",
974 dev->name, len);
975 return 0xffff;
976 }
977
978 delay = jiffies + HFA384X_ALLOC_COMPL_TIMEOUT;
979 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC) &&
980 time_before(jiffies, delay))
981 yield();
982 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC)) {
983 printk("%s: fid allocate, len=%d - timeout\n", dev->name, len);
984 return 0xffff;
985 }
986
987 fid = HFA384X_INW(HFA384X_ALLOCFID_OFF);
988 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF);
989
990 return fid;
991}
992
993
994static int prism2_reset_port(struct net_device *dev)
995{
996 struct hostap_interface *iface;
997 local_info_t *local;
998 int res;
999
1000 iface = netdev_priv(dev);
1001 local = iface->local;
1002
1003 if (!local->dev_enabled)
1004 return 0;
1005
1006 res = hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0,
1007 NULL, NULL);
1008 if (res)
1009 printk(KERN_DEBUG "%s: reset port failed to disable port\n",
1010 dev->name);
1011 else {
1012 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0,
1013 NULL, NULL);
1014 if (res)
1015 printk(KERN_DEBUG "%s: reset port failed to enable "
1016 "port\n", dev->name);
1017 }
1018
1019 /* It looks like at least some STA firmware versions reset
1020 * fragmentation threshold back to 2346 after enable command. Restore
1021 * the configured value, if it differs from this default. */
1022 if (local->fragm_threshold != 2346 &&
1023 hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD,
1024 local->fragm_threshold)) {
1025 printk(KERN_DEBUG "%s: failed to restore fragmentation "
1026 "threshold (%d) after Port0 enable\n",
1027 dev->name, local->fragm_threshold);
1028 }
1029
1030 /* Some firmwares lose antenna selection settings on reset */
1031 (void) hostap_set_antsel(local);
1032
1033 return res;
1034}
1035
1036
1037static int prism2_get_version_info(struct net_device *dev, u16 rid,
1038 const char *txt)
1039{
1040 struct hfa384x_comp_ident comp;
1041 struct hostap_interface *iface;
1042 local_info_t *local;
1043
1044 iface = netdev_priv(dev);
1045 local = iface->local;
1046
1047 if (local->no_pri) {
1048 /* PRI f/w not yet available - cannot read RIDs */
1049 return -1;
1050 }
1051 if (hfa384x_get_rid(dev, rid, &comp, sizeof(comp), 1) < 0) {
1052 printk(KERN_DEBUG "Could not get RID for component %s\n", txt);
1053 return -1;
1054 }
1055
1056 printk(KERN_INFO "%s: %s: id=0x%02x v%d.%d.%d\n", dev->name, txt,
1057 __le16_to_cpu(comp.id), __le16_to_cpu(comp.major),
1058 __le16_to_cpu(comp.minor), __le16_to_cpu(comp.variant));
1059 return 0;
1060}
1061
1062
1063static int prism2_setup_rids(struct net_device *dev)
1064{
1065 struct hostap_interface *iface;
1066 local_info_t *local;
1067 __le16 tmp;
1068 int ret = 0;
1069
1070 iface = netdev_priv(dev);
1071 local = iface->local;
1072
1073 hostap_set_word(dev, HFA384X_RID_TICKTIME, 2000);
1074
1075 if (!local->fw_ap) {
1076 u16 tmp1 = hostap_get_porttype(local);
1077 ret = hostap_set_word(dev, HFA384X_RID_CNFPORTTYPE, tmp1);
1078 if (ret) {
1079 printk("%s: Port type setting to %d failed\n",
1080 dev->name, tmp1);
1081 goto fail;
1082 }
1083 }
1084
1085 /* Setting SSID to empty string seems to kill the card in Host AP mode
1086 */
1087 if (local->iw_mode != IW_MODE_MASTER || local->essid[0] != '\0') {
1088 ret = hostap_set_string(dev, HFA384X_RID_CNFOWNSSID,
1089 local->essid);
1090 if (ret) {
1091 printk("%s: AP own SSID setting failed\n", dev->name);
1092 goto fail;
1093 }
1094 }
1095
1096 ret = hostap_set_word(dev, HFA384X_RID_CNFMAXDATALEN,
1097 PRISM2_DATA_MAXLEN);
1098 if (ret) {
1099 printk("%s: MAC data length setting to %d failed\n",
1100 dev->name, PRISM2_DATA_MAXLEN);
1101 goto fail;
1102 }
1103
1104 if (hfa384x_get_rid(dev, HFA384X_RID_CHANNELLIST, &tmp, 2, 1) < 0) {
1105 printk("%s: Channel list read failed\n", dev->name);
1106 ret = -EINVAL;
1107 goto fail;
1108 }
1109 local->channel_mask = le16_to_cpu(tmp);
1110
1111 if (local->channel < 1 || local->channel > 14 ||
1112 !(local->channel_mask & (1 << (local->channel - 1)))) {
1113 printk(KERN_WARNING "%s: Channel setting out of range "
1114 "(%d)!\n", dev->name, local->channel);
1115 ret = -EBUSY;
1116 goto fail;
1117 }
1118
1119 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNCHANNEL, local->channel);
1120 if (ret) {
1121 printk("%s: Channel setting to %d failed\n",
1122 dev->name, local->channel);
1123 goto fail;
1124 }
1125
1126 ret = hostap_set_word(dev, HFA384X_RID_CNFBEACONINT,
1127 local->beacon_int);
1128 if (ret) {
1129 printk("%s: Beacon interval setting to %d failed\n",
1130 dev->name, local->beacon_int);
1131 /* this may fail with Symbol/Lucent firmware */
1132 if (ret == -ETIMEDOUT)
1133 goto fail;
1134 }
1135
1136 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNDTIMPERIOD,
1137 local->dtim_period);
1138 if (ret) {
1139 printk("%s: DTIM period setting to %d failed\n",
1140 dev->name, local->dtim_period);
1141 /* this may fail with Symbol/Lucent firmware */
1142 if (ret == -ETIMEDOUT)
1143 goto fail;
1144 }
1145
1146 ret = hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE,
1147 local->is_promisc);
1148 if (ret)
1149 printk(KERN_INFO "%s: Setting promiscuous mode (%d) failed\n",
1150 dev->name, local->is_promisc);
1151
1152 if (!local->fw_ap) {
1153 ret = hostap_set_string(dev, HFA384X_RID_CNFDESIREDSSID,
1154 local->essid);
1155 if (ret) {
1156 printk("%s: Desired SSID setting failed\n", dev->name);
1157 goto fail;
1158 }
1159 }
1160
1161 /* Setup TXRateControl, defaults to allow use of 1, 2, 5.5, and
1162 * 11 Mbps in automatic TX rate fallback and 1 and 2 Mbps as basic
1163 * rates */
1164 if (local->tx_rate_control == 0) {
1165 local->tx_rate_control =
1166 HFA384X_RATES_1MBPS |
1167 HFA384X_RATES_2MBPS |
1168 HFA384X_RATES_5MBPS |
1169 HFA384X_RATES_11MBPS;
1170 }
1171 if (local->basic_rates == 0)
1172 local->basic_rates = HFA384X_RATES_1MBPS | HFA384X_RATES_2MBPS;
1173
1174 if (!local->fw_ap) {
1175 ret = hostap_set_word(dev, HFA384X_RID_TXRATECONTROL,
1176 local->tx_rate_control);
1177 if (ret) {
1178 printk("%s: TXRateControl setting to %d failed\n",
1179 dev->name, local->tx_rate_control);
1180 goto fail;
1181 }
1182
1183 ret = hostap_set_word(dev, HFA384X_RID_CNFSUPPORTEDRATES,
1184 local->tx_rate_control);
1185 if (ret) {
1186 printk("%s: cnfSupportedRates setting to %d failed\n",
1187 dev->name, local->tx_rate_control);
1188 }
1189
1190 ret = hostap_set_word(dev, HFA384X_RID_CNFBASICRATES,
1191 local->basic_rates);
1192 if (ret) {
1193 printk("%s: cnfBasicRates setting to %d failed\n",
1194 dev->name, local->basic_rates);
1195 }
1196
1197 ret = hostap_set_word(dev, HFA384X_RID_CREATEIBSS, 1);
1198 if (ret) {
1199 printk("%s: Create IBSS setting to 1 failed\n",
1200 dev->name);
1201 }
1202 }
1203
1204 if (local->name_set)
1205 (void) hostap_set_string(dev, HFA384X_RID_CNFOWNNAME,
1206 local->name);
1207
1208 if (hostap_set_encryption(local)) {
1209 printk(KERN_INFO "%s: could not configure encryption\n",
1210 dev->name);
1211 }
1212
1213 (void) hostap_set_antsel(local);
1214
1215 if (hostap_set_roaming(local)) {
1216 printk(KERN_INFO "%s: could not set host roaming\n",
1217 dev->name);
1218 }
1219
1220 if (local->sta_fw_ver >= PRISM2_FW_VER(1,6,3) &&
1221 hostap_set_word(dev, HFA384X_RID_CNFENHSECURITY, local->enh_sec))
1222 printk(KERN_INFO "%s: cnfEnhSecurity setting to 0x%x failed\n",
1223 dev->name, local->enh_sec);
1224
1225 /* 32-bit tallies were added in STA f/w 0.8.0, but they were apparently
1226 * not working correctly (last seven counters report bogus values).
1227 * This has been fixed in 0.8.2, so enable 32-bit tallies only
1228 * beginning with that firmware version. Another bug fix for 32-bit
1229 * tallies in 1.4.0; should 16-bit tallies be used for some other
1230 * versions, too? */
1231 if (local->sta_fw_ver >= PRISM2_FW_VER(0,8,2)) {
1232 if (hostap_set_word(dev, HFA384X_RID_CNFTHIRTY2TALLY, 1)) {
1233 printk(KERN_INFO "%s: cnfThirty2Tally setting "
1234 "failed\n", dev->name);
1235 local->tallies32 = 0;
1236 } else
1237 local->tallies32 = 1;
1238 } else
1239 local->tallies32 = 0;
1240
1241 hostap_set_auth_algs(local);
1242
1243 if (hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD,
1244 local->fragm_threshold)) {
1245 printk(KERN_INFO "%s: setting FragmentationThreshold to %d "
1246 "failed\n", dev->name, local->fragm_threshold);
1247 }
1248
1249 if (hostap_set_word(dev, HFA384X_RID_RTSTHRESHOLD,
1250 local->rts_threshold)) {
1251 printk(KERN_INFO "%s: setting RTSThreshold to %d failed\n",
1252 dev->name, local->rts_threshold);
1253 }
1254
1255 if (local->manual_retry_count >= 0 &&
1256 hostap_set_word(dev, HFA384X_RID_CNFALTRETRYCOUNT,
1257 local->manual_retry_count)) {
1258 printk(KERN_INFO "%s: setting cnfAltRetryCount to %d failed\n",
1259 dev->name, local->manual_retry_count);
1260 }
1261
1262 if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1) &&
1263 hfa384x_get_rid(dev, HFA384X_RID_CNFDBMADJUST, &tmp, 2, 1) == 2) {
1264 local->rssi_to_dBm = le16_to_cpu(tmp);
1265 }
1266
1267 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->wpa &&
1268 hostap_set_word(dev, HFA384X_RID_SSNHANDLINGMODE, 1)) {
1269 printk(KERN_INFO "%s: setting ssnHandlingMode to 1 failed\n",
1270 dev->name);
1271 }
1272
1273 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->generic_elem &&
1274 hfa384x_set_rid(dev, HFA384X_RID_GENERICELEMENT,
1275 local->generic_elem, local->generic_elem_len)) {
1276 printk(KERN_INFO "%s: setting genericElement failed\n",
1277 dev->name);
1278 }
1279
1280 fail:
1281 return ret;
1282}
1283
1284
1285static int prism2_hw_init(struct net_device *dev, int initial)
1286{
1287 struct hostap_interface *iface;
1288 local_info_t *local;
1289 int ret, first = 1;
1290 unsigned long start, delay;
1291
1292 PDEBUG(DEBUG_FLOW, "prism2_hw_init()\n");
1293
1294 iface = netdev_priv(dev);
1295 local = iface->local;
1296
1297 clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits);
1298
1299 init:
1300 /* initialize HFA 384x */
1301 ret = hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_INIT, 0);
1302 if (ret) {
1303 printk(KERN_INFO "%s: first command failed - assuming card "
1304 "does not have primary firmware\n", dev_info);
1305 }
1306
1307 if (first && (HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) {
1308 /* EvStat has Cmd bit set in some cases, so retry once if no
1309 * wait was needed */
1310 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
1311 printk(KERN_DEBUG "%s: init command completed too quickly - "
1312 "retrying\n", dev->name);
1313 first = 0;
1314 goto init;
1315 }
1316
1317 start = jiffies;
1318 delay = jiffies + HFA384X_INIT_TIMEOUT;
1319 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) &&
1320 time_before(jiffies, delay))
1321 yield();
1322 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) {
1323 printk(KERN_DEBUG "%s: assuming no Primary image in "
1324 "flash - card initialization not completed\n",
1325 dev_info);
1326 local->no_pri = 1;
1327#ifdef PRISM2_DOWNLOAD_SUPPORT
1328 if (local->sram_type == -1)
1329 local->sram_type = prism2_get_ram_size(local);
1330#endif /* PRISM2_DOWNLOAD_SUPPORT */
1331 return 1;
1332 }
1333 local->no_pri = 0;
1334 printk(KERN_DEBUG "prism2_hw_init: initialized in %lu ms\n",
1335 (jiffies - start) * 1000 / HZ);
1336 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
1337 return 0;
1338}
1339
1340
1341static int prism2_hw_init2(struct net_device *dev, int initial)
1342{
1343 struct hostap_interface *iface;
1344 local_info_t *local;
1345 int i;
1346
1347 iface = netdev_priv(dev);
1348 local = iface->local;
1349
1350#ifdef PRISM2_DOWNLOAD_SUPPORT
1351 kfree(local->pda);
1352 if (local->no_pri)
1353 local->pda = NULL;
1354 else
1355 local->pda = prism2_read_pda(dev);
1356#endif /* PRISM2_DOWNLOAD_SUPPORT */
1357
1358 hfa384x_disable_interrupts(dev);
1359
1360#ifndef final_version
1361 HFA384X_OUTW(HFA384X_MAGIC, HFA384X_SWSUPPORT0_OFF);
1362 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) {
1363 printk("SWSUPPORT0 write/read failed: %04X != %04X\n",
1364 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC);
1365 goto failed;
1366 }
1367#endif
1368
1369 if (initial || local->pri_only) {
1370 hfa384x_events_only_cmd(dev);
1371 /* get card version information */
1372 if (prism2_get_version_info(dev, HFA384X_RID_NICID, "NIC") ||
1373 prism2_get_version_info(dev, HFA384X_RID_PRIID, "PRI")) {
1374 hfa384x_disable_interrupts(dev);
1375 goto failed;
1376 }
1377
1378 if (prism2_get_version_info(dev, HFA384X_RID_STAID, "STA")) {
1379 printk(KERN_DEBUG "%s: Failed to read STA f/w version "
1380 "- only Primary f/w present\n", dev->name);
1381 local->pri_only = 1;
1382 return 0;
1383 }
1384 local->pri_only = 0;
1385 hfa384x_disable_interrupts(dev);
1386 }
1387
1388 /* FIX: could convert allocate_fid to use sleeping CmdCompl wait and
1389 * enable interrupts before this. This would also require some sort of
1390 * sleeping AllocEv waiting */
1391
1392 /* allocate TX FIDs */
1393 local->txfid_len = PRISM2_TXFID_LEN;
1394 for (i = 0; i < PRISM2_TXFID_COUNT; i++) {
1395 local->txfid[i] = hfa384x_allocate_fid(dev, local->txfid_len);
1396 if (local->txfid[i] == 0xffff && local->txfid_len > 1600) {
1397 local->txfid[i] = hfa384x_allocate_fid(dev, 1600);
1398 if (local->txfid[i] != 0xffff) {
1399 printk(KERN_DEBUG "%s: Using shorter TX FID "
1400 "(1600 bytes)\n", dev->name);
1401 local->txfid_len = 1600;
1402 }
1403 }
1404 if (local->txfid[i] == 0xffff)
1405 goto failed;
1406 local->intransmitfid[i] = PRISM2_TXFID_EMPTY;
1407 }
1408
1409 hfa384x_events_only_cmd(dev);
1410
1411 if (initial) {
1412 struct list_head *ptr;
1413 prism2_check_sta_fw_version(local);
1414
1415 if (hfa384x_get_rid(dev, HFA384X_RID_CNFOWNMACADDR,
1416 dev->dev_addr, 6, 1) < 0) {
1417 printk("%s: could not get own MAC address\n",
1418 dev->name);
1419 }
1420 list_for_each(ptr, &local->hostap_interfaces) {
1421 iface = list_entry(ptr, struct hostap_interface, list);
1422 eth_hw_addr_inherit(iface->dev, dev);
1423 }
1424 } else if (local->fw_ap)
1425 prism2_check_sta_fw_version(local);
1426
1427 prism2_setup_rids(dev);
1428
1429 /* MAC is now configured, but port 0 is not yet enabled */
1430 return 0;
1431
1432 failed:
1433 if (!local->no_pri)
1434 printk(KERN_WARNING "%s: Initialization failed\n", dev_info);
1435 return 1;
1436}
1437
1438
1439static int prism2_hw_enable(struct net_device *dev, int initial)
1440{
1441 struct hostap_interface *iface;
1442 local_info_t *local;
1443 int was_resetting;
1444
1445 iface = netdev_priv(dev);
1446 local = iface->local;
1447 was_resetting = local->hw_resetting;
1448
1449 if (hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, NULL, NULL)) {
1450 printk("%s: MAC port 0 enabling failed\n", dev->name);
1451 return 1;
1452 }
1453
1454 local->hw_ready = 1;
1455 local->hw_reset_tries = 0;
1456 local->hw_resetting = 0;
1457 hfa384x_enable_interrupts(dev);
1458
1459 /* at least D-Link DWL-650 seems to require additional port reset
1460 * before it starts acting as an AP, so reset port automatically
1461 * here just in case */
1462 if (initial && prism2_reset_port(dev)) {
1463 printk("%s: MAC port 0 resetting failed\n", dev->name);
1464 return 1;
1465 }
1466
1467 if (was_resetting && netif_queue_stopped(dev)) {
1468 /* If hw_reset() was called during pending transmit, netif
1469 * queue was stopped. Wake it up now since the wlan card has
1470 * been resetted. */
1471 netif_wake_queue(dev);
1472 }
1473
1474 return 0;
1475}
1476
1477
1478static int prism2_hw_config(struct net_device *dev, int initial)
1479{
1480 struct hostap_interface *iface;
1481 local_info_t *local;
1482
1483 iface = netdev_priv(dev);
1484 local = iface->local;
1485
1486 if (local->hw_downloading)
1487 return 1;
1488
1489 if (prism2_hw_init(dev, initial)) {
1490 return local->no_pri ? 0 : 1;
1491 }
1492
1493 if (prism2_hw_init2(dev, initial))
1494 return 1;
1495
1496 /* Enable firmware if secondary image is loaded and at least one of the
1497 * netdevices is up. */
1498 if (!local->pri_only &&
1499 (initial == 0 || (initial == 2 && local->num_dev_open > 0))) {
1500 if (!local->dev_enabled)
1501 prism2_callback(local, PRISM2_CALLBACK_ENABLE);
1502 local->dev_enabled = 1;
1503 return prism2_hw_enable(dev, initial);
1504 }
1505
1506 return 0;
1507}
1508
1509
1510static void prism2_hw_shutdown(struct net_device *dev, int no_disable)
1511{
1512 struct hostap_interface *iface;
1513 local_info_t *local;
1514
1515 iface = netdev_priv(dev);
1516 local = iface->local;
1517
1518 /* Allow only command completion events during disable */
1519 hfa384x_events_only_cmd(dev);
1520
1521 local->hw_ready = 0;
1522 if (local->dev_enabled)
1523 prism2_callback(local, PRISM2_CALLBACK_DISABLE);
1524 local->dev_enabled = 0;
1525
1526 if (local->func->card_present && !local->func->card_present(local)) {
1527 printk(KERN_DEBUG "%s: card already removed or not configured "
1528 "during shutdown\n", dev->name);
1529 return;
1530 }
1531
1532 if ((no_disable & HOSTAP_HW_NO_DISABLE) == 0 &&
1533 hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, NULL, NULL))
1534 printk(KERN_WARNING "%s: Shutdown failed\n", dev_info);
1535
1536 hfa384x_disable_interrupts(dev);
1537
1538 if (no_disable & HOSTAP_HW_ENABLE_CMDCOMPL)
1539 hfa384x_events_only_cmd(dev);
1540 else
1541 prism2_clear_cmd_queue(local);
1542}
1543
1544
1545static void prism2_hw_reset(struct net_device *dev)
1546{
1547 struct hostap_interface *iface;
1548 local_info_t *local;
1549
1550#if 0
1551 static long last_reset = 0;
1552
1553 /* do not reset card more than once per second to avoid ending up in a
1554 * busy loop resetting the card */
1555 if (time_before_eq(jiffies, last_reset + HZ))
1556 return;
1557 last_reset = jiffies;
1558#endif
1559
1560 iface = netdev_priv(dev);
1561 local = iface->local;
1562
1563 if (in_interrupt()) {
1564 printk(KERN_DEBUG "%s: driver bug - prism2_hw_reset() called "
1565 "in interrupt context\n", dev->name);
1566 return;
1567 }
1568
1569 if (local->hw_downloading)
1570 return;
1571
1572 if (local->hw_resetting) {
1573 printk(KERN_WARNING "%s: %s: already resetting card - "
1574 "ignoring reset request\n", dev_info, dev->name);
1575 return;
1576 }
1577
1578 local->hw_reset_tries++;
1579 if (local->hw_reset_tries > 10) {
1580 printk(KERN_WARNING "%s: too many reset tries, skipping\n",
1581 dev->name);
1582 return;
1583 }
1584
1585 printk(KERN_WARNING "%s: %s: resetting card\n", dev_info, dev->name);
1586 hfa384x_disable_interrupts(dev);
1587 local->hw_resetting = 1;
1588 if (local->func->cor_sreset) {
1589 /* Host system seems to hang in some cases with high traffic
1590 * load or shared interrupts during COR sreset. Disable shared
1591 * interrupts during reset to avoid these crashes. COS sreset
1592 * takes quite a long time, so it is unfortunate that this
1593 * seems to be needed. Anyway, I do not know of any better way
1594 * of avoiding the crash. */
1595 disable_irq(dev->irq);
1596 local->func->cor_sreset(local);
1597 enable_irq(dev->irq);
1598 }
1599 prism2_hw_shutdown(dev, 1);
1600 prism2_hw_config(dev, 0);
1601 local->hw_resetting = 0;
1602
1603#ifdef PRISM2_DOWNLOAD_SUPPORT
1604 if (local->dl_pri) {
1605 printk(KERN_DEBUG "%s: persistent download of primary "
1606 "firmware\n", dev->name);
1607 if (prism2_download_genesis(local, local->dl_pri) < 0)
1608 printk(KERN_WARNING "%s: download (PRI) failed\n",
1609 dev->name);
1610 }
1611
1612 if (local->dl_sec) {
1613 printk(KERN_DEBUG "%s: persistent download of secondary "
1614 "firmware\n", dev->name);
1615 if (prism2_download_volatile(local, local->dl_sec) < 0)
1616 printk(KERN_WARNING "%s: download (SEC) failed\n",
1617 dev->name);
1618 }
1619#endif /* PRISM2_DOWNLOAD_SUPPORT */
1620
1621 /* TODO: restore beacon TIM bits for STAs that have buffered frames */
1622}
1623
1624
1625static void prism2_schedule_reset(local_info_t *local)
1626{
1627 schedule_work(&local->reset_queue);
1628}
1629
1630
1631/* Called only as scheduled task after noticing card timeout in interrupt
1632 * context */
1633static void handle_reset_queue(struct work_struct *work)
1634{
1635 local_info_t *local = container_of(work, local_info_t, reset_queue);
1636
1637 printk(KERN_DEBUG "%s: scheduled card reset\n", local->dev->name);
1638 prism2_hw_reset(local->dev);
1639
1640 if (netif_queue_stopped(local->dev)) {
1641 int i;
1642
1643 for (i = 0; i < PRISM2_TXFID_COUNT; i++)
1644 if (local->intransmitfid[i] == PRISM2_TXFID_EMPTY) {
1645 PDEBUG(DEBUG_EXTRA, "prism2_tx_timeout: "
1646 "wake up queue\n");
1647 netif_wake_queue(local->dev);
1648 break;
1649 }
1650 }
1651}
1652
1653
1654static int prism2_get_txfid_idx(local_info_t *local)
1655{
1656 int idx, end;
1657 unsigned long flags;
1658
1659 spin_lock_irqsave(&local->txfidlock, flags);
1660 end = idx = local->next_txfid;
1661 do {
1662 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) {
1663 local->intransmitfid[idx] = PRISM2_TXFID_RESERVED;
1664 spin_unlock_irqrestore(&local->txfidlock, flags);
1665 return idx;
1666 }
1667 idx++;
1668 if (idx >= PRISM2_TXFID_COUNT)
1669 idx = 0;
1670 } while (idx != end);
1671 spin_unlock_irqrestore(&local->txfidlock, flags);
1672
1673 PDEBUG(DEBUG_EXTRA2, "prism2_get_txfid_idx: no room in txfid buf: "
1674 "packet dropped\n");
1675 local->dev->stats.tx_dropped++;
1676
1677 return -1;
1678}
1679
1680
1681/* Called only from hardware IRQ */
1682static void prism2_transmit_cb(struct net_device *dev, long context,
1683 u16 resp0, u16 res)
1684{
1685 struct hostap_interface *iface;
1686 local_info_t *local;
1687 int idx = (int) context;
1688
1689 iface = netdev_priv(dev);
1690 local = iface->local;
1691
1692 if (res) {
1693 printk(KERN_DEBUG "%s: prism2_transmit_cb - res=0x%02x\n",
1694 dev->name, res);
1695 return;
1696 }
1697
1698 if (idx < 0 || idx >= PRISM2_TXFID_COUNT) {
1699 printk(KERN_DEBUG "%s: prism2_transmit_cb called with invalid "
1700 "idx=%d\n", dev->name, idx);
1701 return;
1702 }
1703
1704 if (!test_and_clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
1705 printk(KERN_DEBUG "%s: driver bug: prism2_transmit_cb called "
1706 "with no pending transmit\n", dev->name);
1707 }
1708
1709 if (netif_queue_stopped(dev)) {
1710 /* ready for next TX, so wake up queue that was stopped in
1711 * prism2_transmit() */
1712 netif_wake_queue(dev);
1713 }
1714
1715 spin_lock(&local->txfidlock);
1716
1717 /* With reclaim, Resp0 contains new txfid for transmit; the old txfid
1718 * will be automatically allocated for the next TX frame */
1719 local->intransmitfid[idx] = resp0;
1720
1721 PDEBUG(DEBUG_FID, "%s: prism2_transmit_cb: txfid[%d]=0x%04x, "
1722 "resp0=0x%04x, transmit_txfid=0x%04x\n",
1723 dev->name, idx, local->txfid[idx],
1724 resp0, local->intransmitfid[local->next_txfid]);
1725
1726 idx++;
1727 if (idx >= PRISM2_TXFID_COUNT)
1728 idx = 0;
1729 local->next_txfid = idx;
1730
1731 /* check if all TX buffers are occupied */
1732 do {
1733 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) {
1734 spin_unlock(&local->txfidlock);
1735 return;
1736 }
1737 idx++;
1738 if (idx >= PRISM2_TXFID_COUNT)
1739 idx = 0;
1740 } while (idx != local->next_txfid);
1741 spin_unlock(&local->txfidlock);
1742
1743 /* no empty TX buffers, stop queue */
1744 netif_stop_queue(dev);
1745}
1746
1747
1748/* Called only from software IRQ if PCI bus master is not used (with bus master
1749 * this can be called both from software and hardware IRQ) */
1750static int prism2_transmit(struct net_device *dev, int idx)
1751{
1752 struct hostap_interface *iface;
1753 local_info_t *local;
1754 int res;
1755
1756 iface = netdev_priv(dev);
1757 local = iface->local;
1758
1759 /* The driver tries to stop netif queue so that there would not be
1760 * more than one attempt to transmit frames going on; check that this
1761 * is really the case */
1762
1763 if (test_and_set_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
1764 printk(KERN_DEBUG "%s: driver bug - prism2_transmit() called "
1765 "when previous TX was pending\n", dev->name);
1766 return -1;
1767 }
1768
1769 /* stop the queue for the time that transmit is pending */
1770 netif_stop_queue(dev);
1771
1772 /* transmit packet */
1773 res = hfa384x_cmd_callback(
1774 dev,
1775 HFA384X_CMDCODE_TRANSMIT | HFA384X_CMD_TX_RECLAIM,
1776 local->txfid[idx],
1777 prism2_transmit_cb, (long) idx);
1778
1779 if (res) {
1780 printk(KERN_DEBUG "%s: prism2_transmit: CMDCODE_TRANSMIT "
1781 "failed (res=%d)\n", dev->name, res);
1782 dev->stats.tx_dropped++;
1783 netif_wake_queue(dev);
1784 return -1;
1785 }
1786 netif_trans_update(dev);
1787
1788 /* Since we did not wait for command completion, the card continues
1789 * to process on the background and we will finish handling when
1790 * command completion event is handled (prism2_cmd_ev() function) */
1791
1792 return 0;
1793}
1794
1795
1796/* Send IEEE 802.11 frame (convert the header into Prism2 TX descriptor and
1797 * send the payload with this descriptor) */
1798/* Called only from software IRQ */
1799static int prism2_tx_80211(struct sk_buff *skb, struct net_device *dev)
1800{
1801 struct hostap_interface *iface;
1802 local_info_t *local;
1803 struct hfa384x_tx_frame txdesc;
1804 struct hostap_skb_tx_data *meta;
1805 int hdr_len, data_len, idx, res, ret = -1;
1806 u16 tx_control, fc;
1807
1808 iface = netdev_priv(dev);
1809 local = iface->local;
1810
1811 meta = (struct hostap_skb_tx_data *) skb->cb;
1812
1813 prism2_callback(local, PRISM2_CALLBACK_TX_START);
1814
1815 if ((local->func->card_present && !local->func->card_present(local)) ||
1816 !local->hw_ready || local->hw_downloading || local->pri_only) {
1817 if (net_ratelimit()) {
1818 printk(KERN_DEBUG "%s: prism2_tx_80211: hw not ready -"
1819 " skipping\n", dev->name);
1820 }
1821 goto fail;
1822 }
1823
1824 memset(&txdesc, 0, sizeof(txdesc));
1825
1826 /* skb->data starts with txdesc->frame_control */
1827 hdr_len = 24;
1828 skb_copy_from_linear_data(skb, &txdesc.frame_control, hdr_len);
1829 fc = le16_to_cpu(txdesc.frame_control);
1830 if (ieee80211_is_data(txdesc.frame_control) &&
1831 ieee80211_has_a4(txdesc.frame_control) &&
1832 skb->len >= 30) {
1833 /* Addr4 */
1834 skb_copy_from_linear_data_offset(skb, hdr_len, txdesc.addr4,
1835 ETH_ALEN);
1836 hdr_len += ETH_ALEN;
1837 }
1838
1839 tx_control = local->tx_control;
1840 if (meta->tx_cb_idx) {
1841 tx_control |= HFA384X_TX_CTRL_TX_OK;
1842 txdesc.sw_support = cpu_to_le32(meta->tx_cb_idx);
1843 }
1844 txdesc.tx_control = cpu_to_le16(tx_control);
1845 txdesc.tx_rate = meta->rate;
1846
1847 data_len = skb->len - hdr_len;
1848 txdesc.data_len = cpu_to_le16(data_len);
1849 txdesc.len = cpu_to_be16(data_len);
1850
1851 idx = prism2_get_txfid_idx(local);
1852 if (idx < 0)
1853 goto fail;
1854
1855 if (local->frame_dump & PRISM2_DUMP_TX_HDR)
1856 hostap_dump_tx_header(dev->name, &txdesc);
1857
1858 spin_lock(&local->baplock);
1859 res = hfa384x_setup_bap(dev, BAP0, local->txfid[idx], 0);
1860
1861 if (!res)
1862 res = hfa384x_to_bap(dev, BAP0, &txdesc, sizeof(txdesc));
1863 if (!res)
1864 res = hfa384x_to_bap(dev, BAP0, skb->data + hdr_len,
1865 skb->len - hdr_len);
1866 spin_unlock(&local->baplock);
1867
1868 if (!res)
1869 res = prism2_transmit(dev, idx);
1870 if (res) {
1871 printk(KERN_DEBUG "%s: prism2_tx_80211 - to BAP0 failed\n",
1872 dev->name);
1873 local->intransmitfid[idx] = PRISM2_TXFID_EMPTY;
1874 schedule_work(&local->reset_queue);
1875 goto fail;
1876 }
1877
1878 ret = 0;
1879
1880fail:
1881 prism2_callback(local, PRISM2_CALLBACK_TX_END);
1882 return ret;
1883}
1884
1885
1886/* Some SMP systems have reported number of odd errors with hostap_pci. fid
1887 * register has changed values between consecutive reads for an unknown reason.
1888 * This should really not happen, so more debugging is needed. This test
1889 * version is a bit slower, but it will detect most of such register changes
1890 * and will try to get the correct fid eventually. */
1891#define EXTRA_FID_READ_TESTS
1892
1893static u16 prism2_read_fid_reg(struct net_device *dev, u16 reg)
1894{
1895#ifdef EXTRA_FID_READ_TESTS
1896 u16 val, val2, val3;
1897 int i;
1898
1899 for (i = 0; i < 10; i++) {
1900 val = HFA384X_INW(reg);
1901 val2 = HFA384X_INW(reg);
1902 val3 = HFA384X_INW(reg);
1903
1904 if (val == val2 && val == val3)
1905 return val;
1906
1907 printk(KERN_DEBUG "%s: detected fid change (try=%d, reg=%04x):"
1908 " %04x %04x %04x\n",
1909 dev->name, i, reg, val, val2, val3);
1910 if ((val == val2 || val == val3) && val != 0)
1911 return val;
1912 if (val2 == val3 && val2 != 0)
1913 return val2;
1914 }
1915 printk(KERN_WARNING "%s: Uhhuh.. could not read good fid from reg "
1916 "%04x (%04x %04x %04x)\n", dev->name, reg, val, val2, val3);
1917 return val;
1918#else /* EXTRA_FID_READ_TESTS */
1919 return HFA384X_INW(reg);
1920#endif /* EXTRA_FID_READ_TESTS */
1921}
1922
1923
1924/* Called only as a tasklet (software IRQ) */
1925static void prism2_rx(local_info_t *local)
1926{
1927 struct net_device *dev = local->dev;
1928 int res, rx_pending = 0;
1929 u16 len, hdr_len, rxfid, status, macport;
1930 struct hfa384x_rx_frame rxdesc;
1931 struct sk_buff *skb = NULL;
1932
1933 prism2_callback(local, PRISM2_CALLBACK_RX_START);
1934
1935 rxfid = prism2_read_fid_reg(dev, HFA384X_RXFID_OFF);
1936#ifndef final_version
1937 if (rxfid == 0) {
1938 rxfid = HFA384X_INW(HFA384X_RXFID_OFF);
1939 printk(KERN_DEBUG "prism2_rx: rxfid=0 (next 0x%04x)\n",
1940 rxfid);
1941 if (rxfid == 0) {
1942 schedule_work(&local->reset_queue);
1943 goto rx_dropped;
1944 }
1945 /* try to continue with the new rxfid value */
1946 }
1947#endif
1948
1949 spin_lock(&local->baplock);
1950 res = hfa384x_setup_bap(dev, BAP0, rxfid, 0);
1951 if (!res)
1952 res = hfa384x_from_bap(dev, BAP0, &rxdesc, sizeof(rxdesc));
1953
1954 if (res) {
1955 spin_unlock(&local->baplock);
1956 printk(KERN_DEBUG "%s: copy from BAP0 failed %d\n", dev->name,
1957 res);
1958 if (res == -ETIMEDOUT) {
1959 schedule_work(&local->reset_queue);
1960 }
1961 goto rx_dropped;
1962 }
1963
1964 len = le16_to_cpu(rxdesc.data_len);
1965 hdr_len = sizeof(rxdesc);
1966 status = le16_to_cpu(rxdesc.status);
1967 macport = (status >> 8) & 0x07;
1968
1969 /* Drop frames with too large reported payload length. Monitor mode
1970 * seems to sometimes pass frames (e.g., ctrl::ack) with signed and
1971 * negative value, so allow also values 65522 .. 65534 (-14 .. -2) for
1972 * macport 7 */
1973 if (len > PRISM2_DATA_MAXLEN + 8 /* WEP */) {
1974 if (macport == 7 && local->iw_mode == IW_MODE_MONITOR) {
1975 if (len >= (u16) -14) {
1976 hdr_len -= 65535 - len;
1977 hdr_len--;
1978 }
1979 len = 0;
1980 } else {
1981 spin_unlock(&local->baplock);
1982 printk(KERN_DEBUG "%s: Received frame with invalid "
1983 "length 0x%04x\n", dev->name, len);
1984 hostap_dump_rx_header(dev->name, &rxdesc);
1985 goto rx_dropped;
1986 }
1987 }
1988
1989 skb = dev_alloc_skb(len + hdr_len);
1990 if (!skb) {
1991 spin_unlock(&local->baplock);
1992 printk(KERN_DEBUG "%s: RX failed to allocate skb\n",
1993 dev->name);
1994 goto rx_dropped;
1995 }
1996 skb->dev = dev;
1997 skb_put_data(skb, &rxdesc, hdr_len);
1998
1999 if (len > 0)
2000 res = hfa384x_from_bap(dev, BAP0, skb_put(skb, len), len);
2001 spin_unlock(&local->baplock);
2002 if (res) {
2003 printk(KERN_DEBUG "%s: RX failed to read "
2004 "frame data\n", dev->name);
2005 goto rx_dropped;
2006 }
2007
2008 skb_queue_tail(&local->rx_list, skb);
2009 tasklet_schedule(&local->rx_tasklet);
2010
2011 rx_exit:
2012 prism2_callback(local, PRISM2_CALLBACK_RX_END);
2013 if (!rx_pending) {
2014 HFA384X_OUTW(HFA384X_EV_RX, HFA384X_EVACK_OFF);
2015 }
2016
2017 return;
2018
2019 rx_dropped:
2020 dev->stats.rx_dropped++;
2021 if (skb)
2022 dev_kfree_skb(skb);
2023 goto rx_exit;
2024}
2025
2026
2027/* Called only as a tasklet (software IRQ) */
2028static void hostap_rx_skb(local_info_t *local, struct sk_buff *skb)
2029{
2030 struct hfa384x_rx_frame *rxdesc;
2031 struct net_device *dev = skb->dev;
2032 struct hostap_80211_rx_status stats;
2033 int hdrlen, rx_hdrlen;
2034
2035 rx_hdrlen = sizeof(*rxdesc);
2036 if (skb->len < sizeof(*rxdesc)) {
2037 /* Allow monitor mode to receive shorter frames */
2038 if (local->iw_mode == IW_MODE_MONITOR &&
2039 skb->len >= sizeof(*rxdesc) - 30) {
2040 rx_hdrlen = skb->len;
2041 } else {
2042 dev_kfree_skb(skb);
2043 return;
2044 }
2045 }
2046
2047 rxdesc = (struct hfa384x_rx_frame *) skb->data;
2048
2049 if (local->frame_dump & PRISM2_DUMP_RX_HDR &&
2050 skb->len >= sizeof(*rxdesc))
2051 hostap_dump_rx_header(dev->name, rxdesc);
2052
2053 if (le16_to_cpu(rxdesc->status) & HFA384X_RX_STATUS_FCSERR &&
2054 (!local->monitor_allow_fcserr ||
2055 local->iw_mode != IW_MODE_MONITOR))
2056 goto drop;
2057
2058 if (skb->len > PRISM2_DATA_MAXLEN) {
2059 printk(KERN_DEBUG "%s: RX: len(%d) > MAX(%d)\n",
2060 dev->name, skb->len, PRISM2_DATA_MAXLEN);
2061 goto drop;
2062 }
2063
2064 stats.mac_time = le32_to_cpu(rxdesc->time);
2065 stats.signal = rxdesc->signal - local->rssi_to_dBm;
2066 stats.noise = rxdesc->silence - local->rssi_to_dBm;
2067 stats.rate = rxdesc->rate;
2068
2069 /* Convert Prism2 RX structure into IEEE 802.11 header */
2070 hdrlen = hostap_80211_get_hdrlen(rxdesc->frame_control);
2071 if (hdrlen > rx_hdrlen)
2072 hdrlen = rx_hdrlen;
2073
2074 memmove(skb_pull(skb, rx_hdrlen - hdrlen),
2075 &rxdesc->frame_control, hdrlen);
2076
2077 hostap_80211_rx(dev, skb, &stats);
2078 return;
2079
2080 drop:
2081 dev_kfree_skb(skb);
2082}
2083
2084
2085/* Called only as a tasklet (software IRQ) */
2086static void hostap_rx_tasklet(unsigned long data)
2087{
2088 local_info_t *local = (local_info_t *) data;
2089 struct sk_buff *skb;
2090
2091 while ((skb = skb_dequeue(&local->rx_list)) != NULL)
2092 hostap_rx_skb(local, skb);
2093}
2094
2095
2096/* Called only from hardware IRQ */
2097static void prism2_alloc_ev(struct net_device *dev)
2098{
2099 struct hostap_interface *iface;
2100 local_info_t *local;
2101 int idx;
2102 u16 fid;
2103
2104 iface = netdev_priv(dev);
2105 local = iface->local;
2106
2107 fid = prism2_read_fid_reg(dev, HFA384X_ALLOCFID_OFF);
2108
2109 PDEBUG(DEBUG_FID, "FID: interrupt: ALLOC - fid=0x%04x\n", fid);
2110
2111 spin_lock(&local->txfidlock);
2112 idx = local->next_alloc;
2113
2114 do {
2115 if (local->txfid[idx] == fid) {
2116 PDEBUG(DEBUG_FID, "FID: found matching txfid[%d]\n",
2117 idx);
2118
2119#ifndef final_version
2120 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY)
2121 printk("Already released txfid found at idx "
2122 "%d\n", idx);
2123 if (local->intransmitfid[idx] == PRISM2_TXFID_RESERVED)
2124 printk("Already reserved txfid found at idx "
2125 "%d\n", idx);
2126#endif
2127 local->intransmitfid[idx] = PRISM2_TXFID_EMPTY;
2128 idx++;
2129 local->next_alloc = idx >= PRISM2_TXFID_COUNT ? 0 :
2130 idx;
2131
2132 if (!test_bit(HOSTAP_BITS_TRANSMIT, &local->bits) &&
2133 netif_queue_stopped(dev))
2134 netif_wake_queue(dev);
2135
2136 spin_unlock(&local->txfidlock);
2137 return;
2138 }
2139
2140 idx++;
2141 if (idx >= PRISM2_TXFID_COUNT)
2142 idx = 0;
2143 } while (idx != local->next_alloc);
2144
2145 printk(KERN_WARNING "%s: could not find matching txfid (0x%04x, new "
2146 "read 0x%04x) for alloc event\n", dev->name, fid,
2147 HFA384X_INW(HFA384X_ALLOCFID_OFF));
2148 printk(KERN_DEBUG "TXFIDs:");
2149 for (idx = 0; idx < PRISM2_TXFID_COUNT; idx++)
2150 printk(" %04x[%04x]", local->txfid[idx],
2151 local->intransmitfid[idx]);
2152 printk("\n");
2153 spin_unlock(&local->txfidlock);
2154
2155 /* FIX: should probably schedule reset; reference to one txfid was lost
2156 * completely.. Bad things will happen if we run out of txfids
2157 * Actually, this will cause netdev watchdog to notice TX timeout and
2158 * then card reset after all txfids have been leaked. */
2159}
2160
2161
2162/* Called only as a tasklet (software IRQ) */
2163static void hostap_tx_callback(local_info_t *local,
2164 struct hfa384x_tx_frame *txdesc, int ok,
2165 char *payload)
2166{
2167 u16 sw_support, hdrlen, len;
2168 struct sk_buff *skb;
2169 struct hostap_tx_callback_info *cb;
2170
2171 /* Make sure that frame was from us. */
2172 if (!ether_addr_equal(txdesc->addr2, local->dev->dev_addr)) {
2173 printk(KERN_DEBUG "%s: TX callback - foreign frame\n",
2174 local->dev->name);
2175 return;
2176 }
2177
2178 sw_support = le32_to_cpu(txdesc->sw_support);
2179
2180 spin_lock(&local->lock);
2181 cb = local->tx_callback;
2182 while (cb != NULL && cb->idx != sw_support)
2183 cb = cb->next;
2184 spin_unlock(&local->lock);
2185
2186 if (cb == NULL) {
2187 printk(KERN_DEBUG "%s: could not find TX callback (idx %d)\n",
2188 local->dev->name, sw_support);
2189 return;
2190 }
2191
2192 hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control);
2193 len = le16_to_cpu(txdesc->data_len);
2194 skb = dev_alloc_skb(hdrlen + len);
2195 if (skb == NULL) {
2196 printk(KERN_DEBUG "%s: hostap_tx_callback failed to allocate "
2197 "skb\n", local->dev->name);
2198 return;
2199 }
2200
2201 skb_put_data(skb, (void *)&txdesc->frame_control, hdrlen);
2202 if (payload)
2203 skb_put_data(skb, payload, len);
2204
2205 skb->dev = local->dev;
2206 skb_reset_mac_header(skb);
2207
2208 cb->func(skb, ok, cb->data);
2209}
2210
2211
2212/* Called only as a tasklet (software IRQ) */
2213static int hostap_tx_compl_read(local_info_t *local, int error,
2214 struct hfa384x_tx_frame *txdesc,
2215 char **payload)
2216{
2217 u16 fid, len;
2218 int res, ret = 0;
2219 struct net_device *dev = local->dev;
2220
2221 fid = prism2_read_fid_reg(dev, HFA384X_TXCOMPLFID_OFF);
2222
2223 PDEBUG(DEBUG_FID, "interrupt: TX (err=%d) - fid=0x%04x\n", fid, error);
2224
2225 spin_lock(&local->baplock);
2226 res = hfa384x_setup_bap(dev, BAP0, fid, 0);
2227 if (!res)
2228 res = hfa384x_from_bap(dev, BAP0, txdesc, sizeof(*txdesc));
2229 if (res) {
2230 PDEBUG(DEBUG_EXTRA, "%s: TX (err=%d) - fid=0x%04x - could not "
2231 "read txdesc\n", dev->name, error, fid);
2232 if (res == -ETIMEDOUT) {
2233 schedule_work(&local->reset_queue);
2234 }
2235 ret = -1;
2236 goto fail;
2237 }
2238 if (txdesc->sw_support) {
2239 len = le16_to_cpu(txdesc->data_len);
2240 if (len < PRISM2_DATA_MAXLEN) {
2241 *payload = kmalloc(len, GFP_ATOMIC);
2242 if (*payload == NULL ||
2243 hfa384x_from_bap(dev, BAP0, *payload, len)) {
2244 PDEBUG(DEBUG_EXTRA, "%s: could not read TX "
2245 "frame payload\n", dev->name);
2246 kfree(*payload);
2247 *payload = NULL;
2248 ret = -1;
2249 goto fail;
2250 }
2251 }
2252 }
2253
2254 fail:
2255 spin_unlock(&local->baplock);
2256
2257 return ret;
2258}
2259
2260
2261/* Called only as a tasklet (software IRQ) */
2262static void prism2_tx_ev(local_info_t *local)
2263{
2264 struct net_device *dev = local->dev;
2265 char *payload = NULL;
2266 struct hfa384x_tx_frame txdesc;
2267
2268 if (hostap_tx_compl_read(local, 0, &txdesc, &payload))
2269 goto fail;
2270
2271 if (local->frame_dump & PRISM2_DUMP_TX_HDR) {
2272 PDEBUG(DEBUG_EXTRA, "%s: TX - status=0x%04x "
2273 "retry_count=%d tx_rate=%d seq_ctrl=%d "
2274 "duration_id=%d\n",
2275 dev->name, le16_to_cpu(txdesc.status),
2276 txdesc.retry_count, txdesc.tx_rate,
2277 le16_to_cpu(txdesc.seq_ctrl),
2278 le16_to_cpu(txdesc.duration_id));
2279 }
2280
2281 if (txdesc.sw_support)
2282 hostap_tx_callback(local, &txdesc, 1, payload);
2283 kfree(payload);
2284
2285 fail:
2286 HFA384X_OUTW(HFA384X_EV_TX, HFA384X_EVACK_OFF);
2287}
2288
2289
2290/* Called only as a tasklet (software IRQ) */
2291static void hostap_sta_tx_exc_tasklet(unsigned long data)
2292{
2293 local_info_t *local = (local_info_t *) data;
2294 struct sk_buff *skb;
2295
2296 while ((skb = skb_dequeue(&local->sta_tx_exc_list)) != NULL) {
2297 struct hfa384x_tx_frame *txdesc =
2298 (struct hfa384x_tx_frame *) skb->data;
2299
2300 if (skb->len >= sizeof(*txdesc)) {
2301 /* Convert Prism2 RX structure into IEEE 802.11 header
2302 */
2303 int hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control);
2304 memmove(skb_pull(skb, sizeof(*txdesc) - hdrlen),
2305 &txdesc->frame_control, hdrlen);
2306
2307 hostap_handle_sta_tx_exc(local, skb);
2308 }
2309 dev_kfree_skb(skb);
2310 }
2311}
2312
2313
2314/* Called only as a tasklet (software IRQ) */
2315static void prism2_txexc(local_info_t *local)
2316{
2317 struct net_device *dev = local->dev;
2318 u16 status, fc;
2319 int show_dump, res;
2320 char *payload = NULL;
2321 struct hfa384x_tx_frame txdesc;
2322
2323 show_dump = local->frame_dump & PRISM2_DUMP_TXEXC_HDR;
2324 dev->stats.tx_errors++;
2325
2326 res = hostap_tx_compl_read(local, 1, &txdesc, &payload);
2327 HFA384X_OUTW(HFA384X_EV_TXEXC, HFA384X_EVACK_OFF);
2328 if (res)
2329 return;
2330
2331 status = le16_to_cpu(txdesc.status);
2332
2333 /* We produce a TXDROP event only for retry or lifetime
2334 * exceeded, because that's the only status that really mean
2335 * that this particular node went away.
2336 * Other errors means that *we* screwed up. - Jean II */
2337 if (status & (HFA384X_TX_STATUS_RETRYERR | HFA384X_TX_STATUS_AGEDERR))
2338 {
2339 union iwreq_data wrqu;
2340
2341 /* Copy 802.11 dest address. */
2342 memcpy(wrqu.addr.sa_data, txdesc.addr1, ETH_ALEN);
2343 wrqu.addr.sa_family = ARPHRD_ETHER;
2344 wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL);
2345 } else
2346 show_dump = 1;
2347
2348 if (local->iw_mode == IW_MODE_MASTER ||
2349 local->iw_mode == IW_MODE_REPEAT ||
2350 local->wds_type & HOSTAP_WDS_AP_CLIENT) {
2351 struct sk_buff *skb;
2352 skb = dev_alloc_skb(sizeof(txdesc));
2353 if (skb) {
2354 skb_put_data(skb, &txdesc, sizeof(txdesc));
2355 skb_queue_tail(&local->sta_tx_exc_list, skb);
2356 tasklet_schedule(&local->sta_tx_exc_tasklet);
2357 }
2358 }
2359
2360 if (txdesc.sw_support)
2361 hostap_tx_callback(local, &txdesc, 0, payload);
2362 kfree(payload);
2363
2364 if (!show_dump)
2365 return;
2366
2367 PDEBUG(DEBUG_EXTRA, "%s: TXEXC - status=0x%04x (%s%s%s%s)"
2368 " tx_control=%04x\n",
2369 dev->name, status,
2370 status & HFA384X_TX_STATUS_RETRYERR ? "[RetryErr]" : "",
2371 status & HFA384X_TX_STATUS_AGEDERR ? "[AgedErr]" : "",
2372 status & HFA384X_TX_STATUS_DISCON ? "[Discon]" : "",
2373 status & HFA384X_TX_STATUS_FORMERR ? "[FormErr]" : "",
2374 le16_to_cpu(txdesc.tx_control));
2375
2376 fc = le16_to_cpu(txdesc.frame_control);
2377 PDEBUG(DEBUG_EXTRA, " retry_count=%d tx_rate=%d fc=0x%04x "
2378 "(%s%s%s::%d%s%s)\n",
2379 txdesc.retry_count, txdesc.tx_rate, fc,
2380 ieee80211_is_mgmt(txdesc.frame_control) ? "Mgmt" : "",
2381 ieee80211_is_ctl(txdesc.frame_control) ? "Ctrl" : "",
2382 ieee80211_is_data(txdesc.frame_control) ? "Data" : "",
2383 (fc & IEEE80211_FCTL_STYPE) >> 4,
2384 ieee80211_has_tods(txdesc.frame_control) ? " ToDS" : "",
2385 ieee80211_has_fromds(txdesc.frame_control) ? " FromDS" : "");
2386 PDEBUG(DEBUG_EXTRA, " A1=%pM A2=%pM A3=%pM A4=%pM\n",
2387 txdesc.addr1, txdesc.addr2,
2388 txdesc.addr3, txdesc.addr4);
2389}
2390
2391
2392/* Called only as a tasklet (software IRQ) */
2393static void hostap_info_tasklet(unsigned long data)
2394{
2395 local_info_t *local = (local_info_t *) data;
2396 struct sk_buff *skb;
2397
2398 while ((skb = skb_dequeue(&local->info_list)) != NULL) {
2399 hostap_info_process(local, skb);
2400 dev_kfree_skb(skb);
2401 }
2402}
2403
2404
2405/* Called only as a tasklet (software IRQ) */
2406static void prism2_info(local_info_t *local)
2407{
2408 struct net_device *dev = local->dev;
2409 u16 fid;
2410 int res, left;
2411 struct hfa384x_info_frame info;
2412 struct sk_buff *skb;
2413
2414 fid = HFA384X_INW(HFA384X_INFOFID_OFF);
2415
2416 spin_lock(&local->baplock);
2417 res = hfa384x_setup_bap(dev, BAP0, fid, 0);
2418 if (!res)
2419 res = hfa384x_from_bap(dev, BAP0, &info, sizeof(info));
2420 if (res) {
2421 spin_unlock(&local->baplock);
2422 printk(KERN_DEBUG "Could not get info frame (fid=0x%04x)\n",
2423 fid);
2424 if (res == -ETIMEDOUT) {
2425 schedule_work(&local->reset_queue);
2426 }
2427 goto out;
2428 }
2429
2430 left = (le16_to_cpu(info.len) - 1) * 2;
2431
2432 if (info.len & cpu_to_le16(0x8000) || info.len == 0 || left > 2060) {
2433 /* data register seems to give 0x8000 in some error cases even
2434 * though busy bit is not set in offset register;
2435 * in addition, length must be at least 1 due to type field */
2436 spin_unlock(&local->baplock);
2437 printk(KERN_DEBUG "%s: Received info frame with invalid "
2438 "length 0x%04x (type 0x%04x)\n", dev->name,
2439 le16_to_cpu(info.len), le16_to_cpu(info.type));
2440 goto out;
2441 }
2442
2443 skb = dev_alloc_skb(sizeof(info) + left);
2444 if (skb == NULL) {
2445 spin_unlock(&local->baplock);
2446 printk(KERN_DEBUG "%s: Could not allocate skb for info "
2447 "frame\n", dev->name);
2448 goto out;
2449 }
2450
2451 skb_put_data(skb, &info, sizeof(info));
2452 if (left > 0 && hfa384x_from_bap(dev, BAP0, skb_put(skb, left), left))
2453 {
2454 spin_unlock(&local->baplock);
2455 printk(KERN_WARNING "%s: Info frame read failed (fid=0x%04x, "
2456 "len=0x%04x, type=0x%04x\n", dev->name, fid,
2457 le16_to_cpu(info.len), le16_to_cpu(info.type));
2458 dev_kfree_skb(skb);
2459 goto out;
2460 }
2461 spin_unlock(&local->baplock);
2462
2463 skb_queue_tail(&local->info_list, skb);
2464 tasklet_schedule(&local->info_tasklet);
2465
2466 out:
2467 HFA384X_OUTW(HFA384X_EV_INFO, HFA384X_EVACK_OFF);
2468}
2469
2470
2471/* Called only as a tasklet (software IRQ) */
2472static void hostap_bap_tasklet(unsigned long data)
2473{
2474 local_info_t *local = (local_info_t *) data;
2475 struct net_device *dev = local->dev;
2476 u16 ev;
2477 int frames = 30;
2478
2479 if (local->func->card_present && !local->func->card_present(local))
2480 return;
2481
2482 set_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits);
2483
2484 /* Process all pending BAP events without generating new interrupts
2485 * for them */
2486 while (frames-- > 0) {
2487 ev = HFA384X_INW(HFA384X_EVSTAT_OFF);
2488 if (ev == 0xffff || !(ev & HFA384X_BAP0_EVENTS))
2489 break;
2490 if (ev & HFA384X_EV_RX)
2491 prism2_rx(local);
2492 if (ev & HFA384X_EV_INFO)
2493 prism2_info(local);
2494 if (ev & HFA384X_EV_TX)
2495 prism2_tx_ev(local);
2496 if (ev & HFA384X_EV_TXEXC)
2497 prism2_txexc(local);
2498 }
2499
2500 set_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits);
2501 clear_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits);
2502
2503 /* Enable interrupts for new BAP events */
2504 hfa384x_events_all(dev);
2505 clear_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits);
2506}
2507
2508
2509/* Called only from hardware IRQ */
2510static void prism2_infdrop(struct net_device *dev)
2511{
2512 static unsigned long last_inquire = 0;
2513
2514 PDEBUG(DEBUG_EXTRA, "%s: INFDROP event\n", dev->name);
2515
2516 /* some firmware versions seem to get stuck with
2517 * full CommTallies in high traffic load cases; every
2518 * packet will then cause INFDROP event and CommTallies
2519 * info frame will not be sent automatically. Try to
2520 * get out of this state by inquiring CommTallies. */
2521 if (!last_inquire || time_after(jiffies, last_inquire + HZ)) {
2522 hfa384x_cmd_callback(dev, HFA384X_CMDCODE_INQUIRE,
2523 HFA384X_INFO_COMMTALLIES, NULL, 0);
2524 last_inquire = jiffies;
2525 }
2526}
2527
2528
2529/* Called only from hardware IRQ */
2530static void prism2_ev_tick(struct net_device *dev)
2531{
2532 struct hostap_interface *iface;
2533 local_info_t *local;
2534 u16 evstat, inten;
2535 static int prev_stuck = 0;
2536
2537 iface = netdev_priv(dev);
2538 local = iface->local;
2539
2540 if (time_after(jiffies, local->last_tick_timer + 5 * HZ) &&
2541 local->last_tick_timer) {
2542 evstat = HFA384X_INW(HFA384X_EVSTAT_OFF);
2543 inten = HFA384X_INW(HFA384X_INTEN_OFF);
2544 if (!prev_stuck) {
2545 printk(KERN_INFO "%s: SW TICK stuck? "
2546 "bits=0x%lx EvStat=%04x IntEn=%04x\n",
2547 dev->name, local->bits, evstat, inten);
2548 }
2549 local->sw_tick_stuck++;
2550 if ((evstat & HFA384X_BAP0_EVENTS) &&
2551 (inten & HFA384X_BAP0_EVENTS)) {
2552 printk(KERN_INFO "%s: trying to recover from IRQ "
2553 "hang\n", dev->name);
2554 hfa384x_events_no_bap0(dev);
2555 }
2556 prev_stuck = 1;
2557 } else
2558 prev_stuck = 0;
2559}
2560
2561
2562/* Called only from hardware IRQ */
2563static void prism2_check_magic(local_info_t *local)
2564{
2565 /* at least PCI Prism2.5 with bus mastering seems to sometimes
2566 * return 0x0000 in SWSUPPORT0 for unknown reason, but re-reading the
2567 * register once or twice seems to get the correct value.. PCI cards
2568 * cannot anyway be removed during normal operation, so there is not
2569 * really any need for this verification with them. */
2570
2571#ifndef PRISM2_PCI
2572#ifndef final_version
2573 static unsigned long last_magic_err = 0;
2574 struct net_device *dev = local->dev;
2575
2576 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) {
2577 if (!local->hw_ready)
2578 return;
2579 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
2580 if (time_after(jiffies, last_magic_err + 10 * HZ)) {
2581 printk("%s: Interrupt, but SWSUPPORT0 does not match: "
2582 "%04X != %04X - card removed?\n", dev->name,
2583 HFA384X_INW(HFA384X_SWSUPPORT0_OFF),
2584 HFA384X_MAGIC);
2585 last_magic_err = jiffies;
2586 } else if (net_ratelimit()) {
2587 printk(KERN_DEBUG "%s: interrupt - SWSUPPORT0=%04x "
2588 "MAGIC=%04x\n", dev->name,
2589 HFA384X_INW(HFA384X_SWSUPPORT0_OFF),
2590 HFA384X_MAGIC);
2591 }
2592 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != 0xffff)
2593 schedule_work(&local->reset_queue);
2594 return;
2595 }
2596#endif /* final_version */
2597#endif /* !PRISM2_PCI */
2598}
2599
2600
2601/* Called only from hardware IRQ */
2602static irqreturn_t prism2_interrupt(int irq, void *dev_id)
2603{
2604 struct net_device *dev = dev_id;
2605 struct hostap_interface *iface;
2606 local_info_t *local;
2607 int events = 0;
2608 u16 ev;
2609
2610 iface = netdev_priv(dev);
2611 local = iface->local;
2612
2613 /* Detect early interrupt before driver is fully configured */
2614 spin_lock(&local->irq_init_lock);
2615 if (!dev->base_addr) {
2616 if (net_ratelimit()) {
2617 printk(KERN_DEBUG "%s: Interrupt, but dev not configured\n",
2618 dev->name);
2619 }
2620 spin_unlock(&local->irq_init_lock);
2621 return IRQ_HANDLED;
2622 }
2623 spin_unlock(&local->irq_init_lock);
2624
2625 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 0);
2626
2627 if (local->func->card_present && !local->func->card_present(local)) {
2628 if (net_ratelimit()) {
2629 printk(KERN_DEBUG "%s: Interrupt, but dev not OK\n",
2630 dev->name);
2631 }
2632 return IRQ_HANDLED;
2633 }
2634
2635 prism2_check_magic(local);
2636
2637 for (;;) {
2638 ev = HFA384X_INW(HFA384X_EVSTAT_OFF);
2639 if (ev == 0xffff) {
2640 if (local->shutdown)
2641 return IRQ_HANDLED;
2642 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
2643 printk(KERN_DEBUG "%s: prism2_interrupt: ev=0xffff\n",
2644 dev->name);
2645 return IRQ_HANDLED;
2646 }
2647
2648 ev &= HFA384X_INW(HFA384X_INTEN_OFF);
2649 if (ev == 0)
2650 break;
2651
2652 if (ev & HFA384X_EV_CMD) {
2653 prism2_cmd_ev(dev);
2654 }
2655
2656 /* Above events are needed even before hw is ready, but other
2657 * events should be skipped during initialization. This may
2658 * change for AllocEv if allocate_fid is implemented without
2659 * busy waiting. */
2660 if (!local->hw_ready || local->hw_resetting ||
2661 !local->dev_enabled) {
2662 ev = HFA384X_INW(HFA384X_EVSTAT_OFF);
2663 if (ev & HFA384X_EV_CMD)
2664 goto next_event;
2665 if ((ev & HFA384X_EVENT_MASK) == 0)
2666 return IRQ_HANDLED;
2667 if (local->dev_enabled && (ev & ~HFA384X_EV_TICK) &&
2668 net_ratelimit()) {
2669 printk(KERN_DEBUG "%s: prism2_interrupt: hw "
2670 "not ready; skipping events 0x%04x "
2671 "(IntEn=0x%04x)%s%s%s\n",
2672 dev->name, ev,
2673 HFA384X_INW(HFA384X_INTEN_OFF),
2674 !local->hw_ready ? " (!hw_ready)" : "",
2675 local->hw_resetting ?
2676 " (hw_resetting)" : "",
2677 !local->dev_enabled ?
2678 " (!dev_enabled)" : "");
2679 }
2680 HFA384X_OUTW(ev, HFA384X_EVACK_OFF);
2681 return IRQ_HANDLED;
2682 }
2683
2684 if (ev & HFA384X_EV_TICK) {
2685 prism2_ev_tick(dev);
2686 HFA384X_OUTW(HFA384X_EV_TICK, HFA384X_EVACK_OFF);
2687 }
2688
2689 if (ev & HFA384X_EV_ALLOC) {
2690 prism2_alloc_ev(dev);
2691 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF);
2692 }
2693
2694 /* Reading data from the card is quite time consuming, so do it
2695 * in tasklets. TX, TXEXC, RX, and INFO events will be ACKed
2696 * and unmasked after needed data has been read completely. */
2697 if (ev & HFA384X_BAP0_EVENTS) {
2698 hfa384x_events_no_bap0(dev);
2699 tasklet_schedule(&local->bap_tasklet);
2700 }
2701
2702#ifndef final_version
2703 if (ev & HFA384X_EV_WTERR) {
2704 PDEBUG(DEBUG_EXTRA, "%s: WTERR event\n", dev->name);
2705 HFA384X_OUTW(HFA384X_EV_WTERR, HFA384X_EVACK_OFF);
2706 }
2707#endif /* final_version */
2708
2709 if (ev & HFA384X_EV_INFDROP) {
2710 prism2_infdrop(dev);
2711 HFA384X_OUTW(HFA384X_EV_INFDROP, HFA384X_EVACK_OFF);
2712 }
2713
2714 next_event:
2715 events++;
2716 if (events >= PRISM2_MAX_INTERRUPT_EVENTS) {
2717 PDEBUG(DEBUG_EXTRA, "prism2_interrupt: >%d events "
2718 "(EvStat=0x%04x)\n",
2719 PRISM2_MAX_INTERRUPT_EVENTS,
2720 HFA384X_INW(HFA384X_EVSTAT_OFF));
2721 break;
2722 }
2723 }
2724 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 1);
2725 return IRQ_RETVAL(events);
2726}
2727
2728
2729static void prism2_check_sta_fw_version(local_info_t *local)
2730{
2731 struct hfa384x_comp_ident comp;
2732 int id, variant, major, minor;
2733
2734 if (hfa384x_get_rid(local->dev, HFA384X_RID_STAID,
2735 &comp, sizeof(comp), 1) < 0)
2736 return;
2737
2738 local->fw_ap = 0;
2739 id = le16_to_cpu(comp.id);
2740 if (id != HFA384X_COMP_ID_STA) {
2741 if (id == HFA384X_COMP_ID_FW_AP)
2742 local->fw_ap = 1;
2743 return;
2744 }
2745
2746 major = __le16_to_cpu(comp.major);
2747 minor = __le16_to_cpu(comp.minor);
2748 variant = __le16_to_cpu(comp.variant);
2749 local->sta_fw_ver = PRISM2_FW_VER(major, minor, variant);
2750
2751 /* Station firmware versions before 1.4.x seem to have a bug in
2752 * firmware-based WEP encryption when using Host AP mode, so use
2753 * host_encrypt as a default for them. Firmware version 1.4.9 is the
2754 * first one that has been seen to produce correct encryption, but the
2755 * bug might be fixed before that (although, at least 1.4.2 is broken).
2756 */
2757 local->fw_encrypt_ok = local->sta_fw_ver >= PRISM2_FW_VER(1,4,9);
2758
2759 if (local->iw_mode == IW_MODE_MASTER && !local->host_encrypt &&
2760 !local->fw_encrypt_ok) {
2761 printk(KERN_DEBUG "%s: defaulting to host-based encryption as "
2762 "a workaround for firmware bug in Host AP mode WEP\n",
2763 local->dev->name);
2764 local->host_encrypt = 1;
2765 }
2766
2767 /* IEEE 802.11 standard compliant WDS frames (4 addresses) were broken
2768 * in station firmware versions before 1.5.x. With these versions, the
2769 * driver uses a workaround with bogus frame format (4th address after
2770 * the payload). This is not compatible with other AP devices. Since
2771 * the firmware bug is fixed in the latest station firmware versions,
2772 * automatically enable standard compliant mode for cards using station
2773 * firmware version 1.5.0 or newer. */
2774 if (local->sta_fw_ver >= PRISM2_FW_VER(1,5,0))
2775 local->wds_type |= HOSTAP_WDS_STANDARD_FRAME;
2776 else {
2777 printk(KERN_DEBUG "%s: defaulting to bogus WDS frame as a "
2778 "workaround for firmware bug in Host AP mode WDS\n",
2779 local->dev->name);
2780 }
2781
2782 hostap_check_sta_fw_version(local->ap, local->sta_fw_ver);
2783}
2784
2785
2786static void hostap_passive_scan(struct timer_list *t)
2787{
2788 local_info_t *local = from_timer(local, t, passive_scan_timer);
2789 struct net_device *dev = local->dev;
2790 u16 chan;
2791
2792 if (local->passive_scan_interval <= 0)
2793 return;
2794
2795 if (local->passive_scan_state == PASSIVE_SCAN_LISTEN) {
2796 int max_tries = 16;
2797
2798 /* Even though host system does not really know when the WLAN
2799 * MAC is sending frames, try to avoid changing channels for
2800 * passive scanning when a host-generated frame is being
2801 * transmitted */
2802 if (test_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
2803 printk(KERN_DEBUG "%s: passive scan detected pending "
2804 "TX - delaying\n", dev->name);
2805 local->passive_scan_timer.expires = jiffies + HZ / 10;
2806 add_timer(&local->passive_scan_timer);
2807 return;
2808 }
2809
2810 do {
2811 local->passive_scan_channel++;
2812 if (local->passive_scan_channel > 14)
2813 local->passive_scan_channel = 1;
2814 max_tries--;
2815 } while (!(local->channel_mask &
2816 (1 << (local->passive_scan_channel - 1))) &&
2817 max_tries > 0);
2818
2819 if (max_tries == 0) {
2820 printk(KERN_INFO "%s: no allowed passive scan channels"
2821 " found\n", dev->name);
2822 return;
2823 }
2824
2825 printk(KERN_DEBUG "%s: passive scan channel %d\n",
2826 dev->name, local->passive_scan_channel);
2827 chan = local->passive_scan_channel;
2828 local->passive_scan_state = PASSIVE_SCAN_WAIT;
2829 local->passive_scan_timer.expires = jiffies + HZ / 10;
2830 } else {
2831 chan = local->channel;
2832 local->passive_scan_state = PASSIVE_SCAN_LISTEN;
2833 local->passive_scan_timer.expires = jiffies +
2834 local->passive_scan_interval * HZ;
2835 }
2836
2837 if (hfa384x_cmd_callback(dev, HFA384X_CMDCODE_TEST |
2838 (HFA384X_TEST_CHANGE_CHANNEL << 8),
2839 chan, NULL, 0))
2840 printk(KERN_ERR "%s: passive scan channel set %d "
2841 "failed\n", dev->name, chan);
2842
2843 add_timer(&local->passive_scan_timer);
2844}
2845
2846
2847/* Called only as a scheduled task when communications quality values should
2848 * be updated. */
2849static void handle_comms_qual_update(struct work_struct *work)
2850{
2851 local_info_t *local =
2852 container_of(work, local_info_t, comms_qual_update);
2853 prism2_update_comms_qual(local->dev);
2854}
2855
2856
2857/* Software watchdog - called as a timer. Hardware interrupt (Tick event) is
2858 * used to monitor that local->last_tick_timer is being updated. If not,
2859 * interrupt busy-loop is assumed and driver tries to recover by masking out
2860 * some events. */
2861static void hostap_tick_timer(struct timer_list *t)
2862{
2863 static unsigned long last_inquire = 0;
2864 local_info_t *local = from_timer(local, t, tick_timer);
2865 local->last_tick_timer = jiffies;
2866
2867 /* Inquire CommTallies every 10 seconds to keep the statistics updated
2868 * more often during low load and when using 32-bit tallies. */
2869 if ((!last_inquire || time_after(jiffies, last_inquire + 10 * HZ)) &&
2870 !local->hw_downloading && local->hw_ready &&
2871 !local->hw_resetting && local->dev_enabled) {
2872 hfa384x_cmd_callback(local->dev, HFA384X_CMDCODE_INQUIRE,
2873 HFA384X_INFO_COMMTALLIES, NULL, 0);
2874 last_inquire = jiffies;
2875 }
2876
2877 if ((local->last_comms_qual_update == 0 ||
2878 time_after(jiffies, local->last_comms_qual_update + 10 * HZ)) &&
2879 (local->iw_mode == IW_MODE_INFRA ||
2880 local->iw_mode == IW_MODE_ADHOC)) {
2881 schedule_work(&local->comms_qual_update);
2882 }
2883
2884 local->tick_timer.expires = jiffies + 2 * HZ;
2885 add_timer(&local->tick_timer);
2886}
2887
2888
2889#if !defined(PRISM2_NO_PROCFS_DEBUG) && defined(CONFIG_PROC_FS)
2890static u16 hfa384x_read_reg(struct net_device *dev, u16 reg)
2891{
2892 return HFA384X_INW(reg);
2893}
2894
2895static int prism2_registers_proc_show(struct seq_file *m, void *v)
2896{
2897 local_info_t *local = m->private;
2898
2899#define SHOW_REG(n) \
2900 seq_printf(m, #n "=%04x\n", hfa384x_read_reg(local->dev, HFA384X_##n##_OFF))
2901
2902 SHOW_REG(CMD);
2903 SHOW_REG(PARAM0);
2904 SHOW_REG(PARAM1);
2905 SHOW_REG(PARAM2);
2906 SHOW_REG(STATUS);
2907 SHOW_REG(RESP0);
2908 SHOW_REG(RESP1);
2909 SHOW_REG(RESP2);
2910 SHOW_REG(INFOFID);
2911 SHOW_REG(CONTROL);
2912 SHOW_REG(SELECT0);
2913 SHOW_REG(SELECT1);
2914 SHOW_REG(OFFSET0);
2915 SHOW_REG(OFFSET1);
2916 SHOW_REG(RXFID);
2917 SHOW_REG(ALLOCFID);
2918 SHOW_REG(TXCOMPLFID);
2919 SHOW_REG(SWSUPPORT0);
2920 SHOW_REG(SWSUPPORT1);
2921 SHOW_REG(SWSUPPORT2);
2922 SHOW_REG(EVSTAT);
2923 SHOW_REG(INTEN);
2924 SHOW_REG(EVACK);
2925 /* Do not read data registers, because they change the state of the
2926 * MAC (offset += 2) */
2927 /* SHOW_REG(DATA0); */
2928 /* SHOW_REG(DATA1); */
2929 SHOW_REG(AUXPAGE);
2930 SHOW_REG(AUXOFFSET);
2931 /* SHOW_REG(AUXDATA); */
2932#ifdef PRISM2_PCI
2933 SHOW_REG(PCICOR);
2934 SHOW_REG(PCIHCR);
2935 SHOW_REG(PCI_M0_ADDRH);
2936 SHOW_REG(PCI_M0_ADDRL);
2937 SHOW_REG(PCI_M0_LEN);
2938 SHOW_REG(PCI_M0_CTL);
2939 SHOW_REG(PCI_STATUS);
2940 SHOW_REG(PCI_M1_ADDRH);
2941 SHOW_REG(PCI_M1_ADDRL);
2942 SHOW_REG(PCI_M1_LEN);
2943 SHOW_REG(PCI_M1_CTL);
2944#endif /* PRISM2_PCI */
2945
2946 return 0;
2947}
2948#endif
2949
2950struct set_tim_data {
2951 struct list_head list;
2952 int aid;
2953 int set;
2954};
2955
2956static int prism2_set_tim(struct net_device *dev, int aid, int set)
2957{
2958 struct list_head *ptr;
2959 struct set_tim_data *new_entry;
2960 struct hostap_interface *iface;
2961 local_info_t *local;
2962
2963 iface = netdev_priv(dev);
2964 local = iface->local;
2965
2966 new_entry = kzalloc(sizeof(*new_entry), GFP_ATOMIC);
2967 if (new_entry == NULL)
2968 return -ENOMEM;
2969
2970 new_entry->aid = aid;
2971 new_entry->set = set;
2972
2973 spin_lock_bh(&local->set_tim_lock);
2974 list_for_each(ptr, &local->set_tim_list) {
2975 struct set_tim_data *entry =
2976 list_entry(ptr, struct set_tim_data, list);
2977 if (entry->aid == aid) {
2978 PDEBUG(DEBUG_PS2, "%s: prism2_set_tim: aid=%d "
2979 "set=%d ==> %d\n",
2980 local->dev->name, aid, entry->set, set);
2981 entry->set = set;
2982 kfree(new_entry);
2983 new_entry = NULL;
2984 break;
2985 }
2986 }
2987 if (new_entry)
2988 list_add_tail(&new_entry->list, &local->set_tim_list);
2989 spin_unlock_bh(&local->set_tim_lock);
2990
2991 schedule_work(&local->set_tim_queue);
2992
2993 return 0;
2994}
2995
2996
2997static void handle_set_tim_queue(struct work_struct *work)
2998{
2999 local_info_t *local = container_of(work, local_info_t, set_tim_queue);
3000 struct set_tim_data *entry;
3001 u16 val;
3002
3003 for (;;) {
3004 entry = NULL;
3005 spin_lock_bh(&local->set_tim_lock);
3006 if (!list_empty(&local->set_tim_list)) {
3007 entry = list_entry(local->set_tim_list.next,
3008 struct set_tim_data, list);
3009 list_del(&entry->list);
3010 }
3011 spin_unlock_bh(&local->set_tim_lock);
3012 if (!entry)
3013 break;
3014
3015 PDEBUG(DEBUG_PS2, "%s: handle_set_tim_queue: aid=%d set=%d\n",
3016 local->dev->name, entry->aid, entry->set);
3017
3018 val = entry->aid;
3019 if (entry->set)
3020 val |= 0x8000;
3021 if (hostap_set_word(local->dev, HFA384X_RID_CNFTIMCTRL, val)) {
3022 printk(KERN_DEBUG "%s: set_tim failed (aid=%d "
3023 "set=%d)\n",
3024 local->dev->name, entry->aid, entry->set);
3025 }
3026
3027 kfree(entry);
3028 }
3029}
3030
3031
3032static void prism2_clear_set_tim_queue(local_info_t *local)
3033{
3034 struct list_head *ptr, *n;
3035
3036 list_for_each_safe(ptr, n, &local->set_tim_list) {
3037 struct set_tim_data *entry;
3038 entry = list_entry(ptr, struct set_tim_data, list);
3039 list_del(&entry->list);
3040 kfree(entry);
3041 }
3042}
3043
3044
3045/*
3046 * HostAP uses two layers of net devices, where the inner
3047 * layer gets called all the time from the outer layer.
3048 * This is a natural nesting, which needs a split lock type.
3049 */
3050static struct lock_class_key hostap_netdev_xmit_lock_key;
3051static struct lock_class_key hostap_netdev_addr_lock_key;
3052
3053static void prism2_set_lockdep_class_one(struct net_device *dev,
3054 struct netdev_queue *txq,
3055 void *_unused)
3056{
3057 lockdep_set_class(&txq->_xmit_lock,
3058 &hostap_netdev_xmit_lock_key);
3059}
3060
3061static void prism2_set_lockdep_class(struct net_device *dev)
3062{
3063 lockdep_set_class(&dev->addr_list_lock,
3064 &hostap_netdev_addr_lock_key);
3065 netdev_for_each_tx_queue(dev, prism2_set_lockdep_class_one, NULL);
3066}
3067
3068static struct net_device *
3069prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx,
3070 struct device *sdev)
3071{
3072 struct net_device *dev;
3073 struct hostap_interface *iface;
3074 struct local_info *local;
3075 int len, i, ret;
3076
3077 if (funcs == NULL)
3078 return NULL;
3079
3080 len = strlen(dev_template);
3081 if (len >= IFNAMSIZ || strstr(dev_template, "%d") == NULL) {
3082 printk(KERN_WARNING "hostap: Invalid dev_template='%s'\n",
3083 dev_template);
3084 return NULL;
3085 }
3086
3087 len = sizeof(struct hostap_interface) +
3088 3 + sizeof(struct local_info) +
3089 3 + sizeof(struct ap_data);
3090
3091 dev = alloc_etherdev(len);
3092 if (dev == NULL)
3093 return NULL;
3094
3095 iface = netdev_priv(dev);
3096 local = (struct local_info *) ((((long) (iface + 1)) + 3) & ~3);
3097 local->ap = (struct ap_data *) ((((long) (local + 1)) + 3) & ~3);
3098 local->dev = iface->dev = dev;
3099 iface->local = local;
3100 iface->type = HOSTAP_INTERFACE_MASTER;
3101 INIT_LIST_HEAD(&local->hostap_interfaces);
3102
3103 local->hw_module = THIS_MODULE;
3104
3105#ifdef PRISM2_IO_DEBUG
3106 local->io_debug_enabled = 1;
3107#endif /* PRISM2_IO_DEBUG */
3108
3109 local->func = funcs;
3110 local->func->cmd = hfa384x_cmd;
3111 local->func->read_regs = hfa384x_read_regs;
3112 local->func->get_rid = hfa384x_get_rid;
3113 local->func->set_rid = hfa384x_set_rid;
3114 local->func->hw_enable = prism2_hw_enable;
3115 local->func->hw_config = prism2_hw_config;
3116 local->func->hw_reset = prism2_hw_reset;
3117 local->func->hw_shutdown = prism2_hw_shutdown;
3118 local->func->reset_port = prism2_reset_port;
3119 local->func->schedule_reset = prism2_schedule_reset;
3120#ifdef PRISM2_DOWNLOAD_SUPPORT
3121 local->func->read_aux_proc_ops = &prism2_download_aux_dump_proc_ops;
3122 local->func->download = prism2_download;
3123#endif /* PRISM2_DOWNLOAD_SUPPORT */
3124 local->func->tx = prism2_tx_80211;
3125 local->func->set_tim = prism2_set_tim;
3126 local->func->need_tx_headroom = 0; /* no need to add txdesc in
3127 * skb->data (FIX: maybe for DMA bus
3128 * mastering? */
3129
3130 local->mtu = mtu;
3131
3132 rwlock_init(&local->iface_lock);
3133 spin_lock_init(&local->txfidlock);
3134 spin_lock_init(&local->cmdlock);
3135 spin_lock_init(&local->baplock);
3136 spin_lock_init(&local->lock);
3137 spin_lock_init(&local->irq_init_lock);
3138 mutex_init(&local->rid_bap_mtx);
3139
3140 if (card_idx < 0 || card_idx >= MAX_PARM_DEVICES)
3141 card_idx = 0;
3142 local->card_idx = card_idx;
3143
3144 len = strlen(essid);
3145 memcpy(local->essid, essid,
3146 len > MAX_SSID_LEN ? MAX_SSID_LEN : len);
3147 local->essid[MAX_SSID_LEN] = '\0';
3148 i = GET_INT_PARM(iw_mode, card_idx);
3149 if ((i >= IW_MODE_ADHOC && i <= IW_MODE_REPEAT) ||
3150 i == IW_MODE_MONITOR) {
3151 local->iw_mode = i;
3152 } else {
3153 printk(KERN_WARNING "prism2: Unknown iw_mode %d; using "
3154 "IW_MODE_MASTER\n", i);
3155 local->iw_mode = IW_MODE_MASTER;
3156 }
3157 local->channel = GET_INT_PARM(channel, card_idx);
3158 local->beacon_int = GET_INT_PARM(beacon_int, card_idx);
3159 local->dtim_period = GET_INT_PARM(dtim_period, card_idx);
3160 local->wds_max_connections = 16;
3161 local->tx_control = HFA384X_TX_CTRL_FLAGS;
3162 local->manual_retry_count = -1;
3163 local->rts_threshold = 2347;
3164 local->fragm_threshold = 2346;
3165 local->rssi_to_dBm = 100; /* default; to be overriden by
3166 * cnfDbmAdjust, if available */
3167 local->auth_algs = PRISM2_AUTH_OPEN | PRISM2_AUTH_SHARED_KEY;
3168 local->sram_type = -1;
3169 local->scan_channel_mask = 0xffff;
3170 local->monitor_type = PRISM2_MONITOR_RADIOTAP;
3171
3172 /* Initialize task queue structures */
3173 INIT_WORK(&local->reset_queue, handle_reset_queue);
3174 INIT_WORK(&local->set_multicast_list_queue,
3175 hostap_set_multicast_list_queue);
3176
3177 INIT_WORK(&local->set_tim_queue, handle_set_tim_queue);
3178 INIT_LIST_HEAD(&local->set_tim_list);
3179 spin_lock_init(&local->set_tim_lock);
3180
3181 INIT_WORK(&local->comms_qual_update, handle_comms_qual_update);
3182
3183 /* Initialize tasklets for handling hardware IRQ related operations
3184 * outside hw IRQ handler */
3185#define HOSTAP_TASKLET_INIT(q, f, d) \
3186do { memset((q), 0, sizeof(*(q))); (q)->func = (f); (q)->data = (d); } \
3187while (0)
3188 HOSTAP_TASKLET_INIT(&local->bap_tasklet, hostap_bap_tasklet,
3189 (unsigned long) local);
3190
3191 HOSTAP_TASKLET_INIT(&local->info_tasklet, hostap_info_tasklet,
3192 (unsigned long) local);
3193 hostap_info_init(local);
3194
3195 HOSTAP_TASKLET_INIT(&local->rx_tasklet,
3196 hostap_rx_tasklet, (unsigned long) local);
3197 skb_queue_head_init(&local->rx_list);
3198
3199 HOSTAP_TASKLET_INIT(&local->sta_tx_exc_tasklet,
3200 hostap_sta_tx_exc_tasklet, (unsigned long) local);
3201 skb_queue_head_init(&local->sta_tx_exc_list);
3202
3203 INIT_LIST_HEAD(&local->cmd_queue);
3204 init_waitqueue_head(&local->hostscan_wq);
3205
3206 lib80211_crypt_info_init(&local->crypt_info, dev->name, &local->lock);
3207
3208 timer_setup(&local->passive_scan_timer, hostap_passive_scan, 0);
3209 timer_setup(&local->tick_timer, hostap_tick_timer, 0);
3210 local->tick_timer.expires = jiffies + 2 * HZ;
3211 add_timer(&local->tick_timer);
3212
3213 INIT_LIST_HEAD(&local->bss_list);
3214
3215 hostap_setup_dev(dev, local, HOSTAP_INTERFACE_MASTER);
3216
3217 dev->type = ARPHRD_IEEE80211;
3218 dev->header_ops = &hostap_80211_ops;
3219
3220 rtnl_lock();
3221 ret = dev_alloc_name(dev, "wifi%d");
3222 SET_NETDEV_DEV(dev, sdev);
3223 if (ret >= 0)
3224 ret = register_netdevice(dev);
3225
3226 prism2_set_lockdep_class(dev);
3227 rtnl_unlock();
3228 if (ret < 0) {
3229 printk(KERN_WARNING "%s: register netdevice failed!\n",
3230 dev_info);
3231 goto fail;
3232 }
3233 printk(KERN_INFO "%s: Registered netdevice %s\n", dev_info, dev->name);
3234
3235 hostap_init_data(local);
3236 return dev;
3237
3238 fail:
3239 free_netdev(dev);
3240 return NULL;
3241}
3242
3243
3244static int hostap_hw_ready(struct net_device *dev)
3245{
3246 struct hostap_interface *iface;
3247 struct local_info *local;
3248
3249 iface = netdev_priv(dev);
3250 local = iface->local;
3251 local->ddev = hostap_add_interface(local, HOSTAP_INTERFACE_MAIN, 0,
3252 "", dev_template);
3253
3254 if (local->ddev) {
3255 if (local->iw_mode == IW_MODE_INFRA ||
3256 local->iw_mode == IW_MODE_ADHOC) {
3257 netif_carrier_off(local->dev);
3258 netif_carrier_off(local->ddev);
3259 }
3260 hostap_init_proc(local);
3261#ifndef PRISM2_NO_PROCFS_DEBUG
3262 proc_create_single_data("registers", 0, local->proc,
3263 prism2_registers_proc_show, local);
3264#endif /* PRISM2_NO_PROCFS_DEBUG */
3265 hostap_init_ap_proc(local);
3266 return 0;
3267 }
3268
3269 return -1;
3270}
3271
3272
3273static void prism2_free_local_data(struct net_device *dev)
3274{
3275 struct hostap_tx_callback_info *tx_cb, *tx_cb_prev;
3276 int i;
3277 struct hostap_interface *iface;
3278 struct local_info *local;
3279 struct list_head *ptr, *n;
3280
3281 if (dev == NULL)
3282 return;
3283
3284 iface = netdev_priv(dev);
3285 local = iface->local;
3286
3287 /* Unregister all netdevs before freeing local data. */
3288 list_for_each_safe(ptr, n, &local->hostap_interfaces) {
3289 iface = list_entry(ptr, struct hostap_interface, list);
3290 if (iface->type == HOSTAP_INTERFACE_MASTER) {
3291 /* special handling for this interface below */
3292 continue;
3293 }
3294 hostap_remove_interface(iface->dev, 0, 1);
3295 }
3296
3297 unregister_netdev(local->dev);
3298
3299 flush_work(&local->reset_queue);
3300 flush_work(&local->set_multicast_list_queue);
3301 flush_work(&local->set_tim_queue);
3302#ifndef PRISM2_NO_STATION_MODES
3303 flush_work(&local->info_queue);
3304#endif
3305 flush_work(&local->comms_qual_update);
3306
3307 lib80211_crypt_info_free(&local->crypt_info);
3308
3309 if (timer_pending(&local->passive_scan_timer))
3310 del_timer(&local->passive_scan_timer);
3311
3312 if (timer_pending(&local->tick_timer))
3313 del_timer(&local->tick_timer);
3314
3315 prism2_clear_cmd_queue(local);
3316
3317 skb_queue_purge(&local->info_list);
3318 skb_queue_purge(&local->rx_list);
3319 skb_queue_purge(&local->sta_tx_exc_list);
3320
3321 if (local->dev_enabled)
3322 prism2_callback(local, PRISM2_CALLBACK_DISABLE);
3323
3324 if (local->ap != NULL)
3325 hostap_free_data(local->ap);
3326
3327#ifndef PRISM2_NO_PROCFS_DEBUG
3328 if (local->proc != NULL)
3329 remove_proc_entry("registers", local->proc);
3330#endif /* PRISM2_NO_PROCFS_DEBUG */
3331 hostap_remove_proc(local);
3332
3333 tx_cb = local->tx_callback;
3334 while (tx_cb != NULL) {
3335 tx_cb_prev = tx_cb;
3336 tx_cb = tx_cb->next;
3337 kfree(tx_cb_prev);
3338 }
3339
3340 hostap_set_hostapd(local, 0, 0);
3341 hostap_set_hostapd_sta(local, 0, 0);
3342
3343 for (i = 0; i < PRISM2_FRAG_CACHE_LEN; i++) {
3344 if (local->frag_cache[i].skb != NULL)
3345 dev_kfree_skb(local->frag_cache[i].skb);
3346 }
3347
3348#ifdef PRISM2_DOWNLOAD_SUPPORT
3349 prism2_download_free_data(local->dl_pri);
3350 prism2_download_free_data(local->dl_sec);
3351#endif /* PRISM2_DOWNLOAD_SUPPORT */
3352
3353 prism2_clear_set_tim_queue(local);
3354
3355 list_for_each_safe(ptr, n, &local->bss_list) {
3356 struct hostap_bss_info *bss =
3357 list_entry(ptr, struct hostap_bss_info, list);
3358 kfree(bss);
3359 }
3360
3361 kfree(local->pda);
3362 kfree(local->last_scan_results);
3363 kfree(local->generic_elem);
3364
3365 free_netdev(local->dev);
3366}
3367
3368
3369#if defined(PRISM2_PCI) || defined(PRISM2_PCCARD)
3370static void __maybe_unused prism2_suspend(struct net_device *dev)
3371{
3372 struct hostap_interface *iface;
3373 struct local_info *local;
3374 union iwreq_data wrqu;
3375
3376 iface = netdev_priv(dev);
3377 local = iface->local;
3378
3379 /* Send disconnect event, e.g., to trigger reassociation after resume
3380 * if wpa_supplicant is used. */
3381 memset(&wrqu, 0, sizeof(wrqu));
3382 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3383 wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL);
3384
3385 /* Disable hardware and firmware */
3386 prism2_hw_shutdown(dev, 0);
3387}
3388#endif /* PRISM2_PCI || PRISM2_PCCARD */
3389
3390
3391/* These might at some point be compiled separately and used as separate
3392 * kernel modules or linked into one */
3393#ifdef PRISM2_DOWNLOAD_SUPPORT
3394#include "hostap_download.c"
3395#endif /* PRISM2_DOWNLOAD_SUPPORT */
3396
3397#ifdef PRISM2_CALLBACK
3398/* External hostap_callback.c file can be used to, e.g., blink activity led.
3399 * This can use platform specific code and must define prism2_callback()
3400 * function (if PRISM2_CALLBACK is not defined, these function calls are not
3401 * used. */
3402#include "hostap_callback.c"
3403#endif /* PRISM2_CALLBACK */