2 * Host AP (software wireless LAN access point) driver for
3 * Intersil Prism2/2.5/3.
5 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
7 * Copyright (c) 2002-2005, Jouni Malinen <jkmaline@cc.hut.fi>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation. See README and COPYING for
15 * - there is currently no way of associating TX packets to correct wds device
16 * when TX Exc/OK event occurs, so all tx_packets and some
17 * tx_errors/tx_dropped are added to the main netdevice; using sw_support
18 * field in txdesc might be used to fix this (using Alloc event to increment
19 * tx_packets would need some further info in txfid table)
21 * Buffer Access Path (BAP) usage:
22 * Prism2 cards have two separate BAPs for accessing the card memory. These
23 * should allow concurrent access to two different frames and the driver
24 * previously used BAP0 for sending data and BAP1 for receiving data.
25 * However, there seems to be number of issues with concurrent access and at
26 * least one know hardware bug in using BAP0 and BAP1 concurrently with PCI
27 * Prism2.5. Therefore, the driver now only uses BAP0 for moving data between
28 * host and card memories. BAP0 accesses are protected with local->baplock
29 * (spin_lock_bh) to prevent concurrent use.
33 #include <linux/config.h>
34 #include <linux/version.h>
36 #include <asm/delay.h>
37 #include <asm/uaccess.h>
39 #include <linux/slab.h>
40 #include <linux/netdevice.h>
41 #include <linux/etherdevice.h>
42 #include <linux/proc_fs.h>
43 #include <linux/if_arp.h>
44 #include <linux/delay.h>
45 #include <linux/random.h>
46 #include <linux/wait.h>
47 #include <linux/sched.h>
48 #include <linux/rtnetlink.h>
49 #include <linux/wireless.h>
50 #include <net/iw_handler.h>
51 #include <net/ieee80211.h>
52 #include <net/ieee80211_crypt.h>
55 #include "hostap_80211.h"
57 #include "hostap_ap.h"
60 /* #define final_version */
62 static int mtu = 1500;
63 module_param(mtu, int, 0444);
64 MODULE_PARM_DESC(mtu, "Maximum transfer unit");
66 static int channel[MAX_PARM_DEVICES] = { 3, DEF_INTS };
67 module_param_array(channel, int, NULL, 0444);
68 MODULE_PARM_DESC(channel, "Initial channel");
70 static char essid[33] = "test";
71 module_param_string(essid, essid, sizeof(essid), 0444);
72 MODULE_PARM_DESC(essid, "Host AP's ESSID");
74 static int iw_mode[MAX_PARM_DEVICES] = { IW_MODE_MASTER, DEF_INTS };
75 module_param_array(iw_mode, int, NULL, 0444);
76 MODULE_PARM_DESC(iw_mode, "Initial operation mode");
78 static int beacon_int[MAX_PARM_DEVICES] = { 100, DEF_INTS };
79 module_param_array(beacon_int, int, NULL, 0444);
80 MODULE_PARM_DESC(beacon_int, "Beacon interval (1 = 1024 usec)");
82 static int dtim_period[MAX_PARM_DEVICES] = { 1, DEF_INTS };
83 module_param_array(dtim_period, int, NULL, 0444);
84 MODULE_PARM_DESC(dtim_period, "DTIM period");
86 static char dev_template[16] = "wlan%d";
87 module_param_string(dev_template, dev_template, sizeof(dev_template), 0444);
88 MODULE_PARM_DESC(dev_template, "Prefix for network device name (default: "
92 #define EXTRA_EVENTS_WTERR 0
94 /* check WTERR events (Wait Time-out) in development versions */
95 #define EXTRA_EVENTS_WTERR HFA384X_EV_WTERR
98 /* Events that will be using BAP0 */
99 #define HFA384X_BAP0_EVENTS \
100 (HFA384X_EV_TXEXC | HFA384X_EV_RX | HFA384X_EV_INFO | HFA384X_EV_TX)
102 /* event mask, i.e., events that will result in an interrupt */
103 #define HFA384X_EVENT_MASK \
104 (HFA384X_BAP0_EVENTS | HFA384X_EV_ALLOC | HFA384X_EV_INFDROP | \
105 HFA384X_EV_CMD | HFA384X_EV_TICK | \
108 /* Default TX control flags: use 802.11 headers and request interrupt for
109 * failed transmits. Frames that request ACK callback, will add
110 * _TX_OK flag and _ALT_RTRY flag may be used to select different retry policy.
112 #define HFA384X_TX_CTRL_FLAGS \
113 (HFA384X_TX_CTRL_802_11 | HFA384X_TX_CTRL_TX_EX)
117 #define HFA384X_CMD_BUSY_TIMEOUT 5000
118 #define HFA384X_BAP_BUSY_TIMEOUT 50000
121 #define HFA384X_CMD_COMPL_TIMEOUT 20000
122 #define HFA384X_DL_COMPL_TIMEOUT 1000000
124 /* Wait times for initialization; yield to other processes to avoid busy
125 * waiting for long time. */
126 #define HFA384X_INIT_TIMEOUT (HZ / 2) /* 500 ms */
127 #define HFA384X_ALLOC_COMPL_TIMEOUT (HZ / 20) /* 50 ms */
130 static void prism2_hw_reset(struct net_device *dev);
131 static void prism2_check_sta_fw_version(local_info_t *local);
133 #ifdef PRISM2_DOWNLOAD_SUPPORT
134 /* hostap_download.c */
135 static int prism2_download_aux_dump(struct net_device *dev,
136 unsigned int addr, int len, u8 *buf);
137 static u8 * prism2_read_pda(struct net_device *dev);
138 static int prism2_download(local_info_t *local,
139 struct prism2_download_param *param);
140 static void prism2_download_free_data(struct prism2_download_data *dl);
141 static int prism2_download_volatile(local_info_t *local,
142 struct prism2_download_data *param);
143 static int prism2_download_genesis(local_info_t *local,
144 struct prism2_download_data *param);
145 static int prism2_get_ram_size(local_info_t *local);
146 #endif /* PRISM2_DOWNLOAD_SUPPORT */
151 #ifndef final_version
152 /* magic value written to SWSUPPORT0 reg. for detecting whether card is still
154 #define HFA384X_MAGIC 0x8A32
158 static u16 hfa384x_read_reg(struct net_device *dev, u16 reg)
160 return HFA384X_INW(reg);
164 static void hfa384x_read_regs(struct net_device *dev,
165 struct hfa384x_regs *regs)
167 regs->cmd = HFA384X_INW(HFA384X_CMD_OFF);
168 regs->evstat = HFA384X_INW(HFA384X_EVSTAT_OFF);
169 regs->offset0 = HFA384X_INW(HFA384X_OFFSET0_OFF);
170 regs->offset1 = HFA384X_INW(HFA384X_OFFSET1_OFF);
171 regs->swsupport0 = HFA384X_INW(HFA384X_SWSUPPORT0_OFF);
176 * __hostap_cmd_queue_free - Free Prism2 command queue entry (private)
177 * @local: pointer to private Host AP driver data
178 * @entry: Prism2 command queue entry to be freed
179 * @del_req: request the entry to be removed
181 * Internal helper function for freeing Prism2 command queue entries.
182 * Caller must have acquired local->cmdlock before calling this function.
184 static inline void __hostap_cmd_queue_free(local_info_t *local,
185 struct hostap_cmd_queue *entry,
190 if (!list_empty(&entry->list)) {
191 list_del_init(&entry->list);
192 local->cmd_queue_len--;
196 if (atomic_dec_and_test(&entry->usecnt) && entry->del_req)
202 * hostap_cmd_queue_free - Free Prism2 command queue entry
203 * @local: pointer to private Host AP driver data
204 * @entry: Prism2 command queue entry to be freed
205 * @del_req: request the entry to be removed
207 * Free a Prism2 command queue entry.
209 static inline void hostap_cmd_queue_free(local_info_t *local,
210 struct hostap_cmd_queue *entry,
215 spin_lock_irqsave(&local->cmdlock, flags);
216 __hostap_cmd_queue_free(local, entry, del_req);
217 spin_unlock_irqrestore(&local->cmdlock, flags);
222 * prism2_clear_cmd_queue - Free all pending Prism2 command queue entries
223 * @local: pointer to private Host AP driver data
225 static void prism2_clear_cmd_queue(local_info_t *local)
227 struct list_head *ptr, *n;
229 struct hostap_cmd_queue *entry;
231 spin_lock_irqsave(&local->cmdlock, flags);
232 list_for_each_safe(ptr, n, &local->cmd_queue) {
233 entry = list_entry(ptr, struct hostap_cmd_queue, list);
234 atomic_inc(&entry->usecnt);
235 printk(KERN_DEBUG "%s: removed pending cmd_queue entry "
236 "(type=%d, cmd=0x%04x, param0=0x%04x)\n",
237 local->dev->name, entry->type, entry->cmd,
239 __hostap_cmd_queue_free(local, entry, 1);
241 if (local->cmd_queue_len) {
242 /* This should not happen; print debug message and clear
244 printk(KERN_DEBUG "%s: cmd_queue_len (%d) not zero after "
245 "flush\n", local->dev->name, local->cmd_queue_len);
246 local->cmd_queue_len = 0;
248 spin_unlock_irqrestore(&local->cmdlock, flags);
253 * hfa384x_cmd_issue - Issue a Prism2 command to the hardware
254 * @dev: pointer to net_device
255 * @entry: Prism2 command queue entry to be issued
257 static inline int hfa384x_cmd_issue(struct net_device *dev,
258 struct hostap_cmd_queue *entry)
260 struct hostap_interface *iface;
266 iface = netdev_priv(dev);
267 local = iface->local;
269 if (local->func->card_present && !local->func->card_present(local))
273 printk(KERN_DEBUG "%s: driver bug - re-issuing command @%p\n",
277 /* wait until busy bit is clear; this should always be clear since the
278 * commands are serialized */
279 tries = HFA384X_CMD_BUSY_TIMEOUT;
280 while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) {
284 #ifndef final_version
285 if (tries != HFA384X_CMD_BUSY_TIMEOUT) {
286 prism2_io_debug_error(dev, 1);
287 printk(KERN_DEBUG "%s: hfa384x_cmd_issue: cmd reg was busy "
288 "for %d usec\n", dev->name,
289 HFA384X_CMD_BUSY_TIMEOUT - tries);
293 reg = HFA384X_INW(HFA384X_CMD_OFF);
294 prism2_io_debug_error(dev, 2);
295 printk(KERN_DEBUG "%s: hfa384x_cmd_issue - timeout - "
296 "reg=0x%04x\n", dev->name, reg);
301 spin_lock_irqsave(&local->cmdlock, flags);
302 HFA384X_OUTW(entry->param0, HFA384X_PARAM0_OFF);
303 HFA384X_OUTW(entry->param1, HFA384X_PARAM1_OFF);
304 HFA384X_OUTW(entry->cmd, HFA384X_CMD_OFF);
306 spin_unlock_irqrestore(&local->cmdlock, flags);
313 * hfa384x_cmd - Issue a Prism2 command and wait (sleep) for completion
314 * @dev: pointer to net_device
315 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
316 * @param0: value for Param0 register
317 * @param1: value for Param1 register (pointer; %NULL if not used)
318 * @resp0: pointer for Resp0 data or %NULL if Resp0 is not needed
320 * Issue given command (possibly after waiting in command queue) and sleep
321 * until the command is completed (or timed out or interrupted). This can be
322 * called only from user process context.
324 static int hfa384x_cmd(struct net_device *dev, u16 cmd, u16 param0,
325 u16 *param1, u16 *resp0)
327 struct hostap_interface *iface;
329 int err, res, issue, issued = 0;
331 struct hostap_cmd_queue *entry;
332 DECLARE_WAITQUEUE(wait, current);
334 iface = netdev_priv(dev);
335 local = iface->local;
337 if (in_interrupt()) {
338 printk(KERN_DEBUG "%s: hfa384x_cmd called from interrupt "
339 "context\n", dev->name);
343 if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN) {
344 printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n",
349 if (signal_pending(current))
352 entry = (struct hostap_cmd_queue *)
353 kmalloc(sizeof(*entry), GFP_ATOMIC);
355 printk(KERN_DEBUG "%s: hfa384x_cmd - kmalloc failed\n",
359 memset(entry, 0, sizeof(*entry));
360 atomic_set(&entry->usecnt, 1);
361 entry->type = CMD_SLEEP;
363 entry->param0 = param0;
365 entry->param1 = *param1;
366 init_waitqueue_head(&entry->compl);
368 /* prepare to wait for command completion event, but do not sleep yet
370 add_wait_queue(&entry->compl, &wait);
371 set_current_state(TASK_INTERRUPTIBLE);
373 spin_lock_irqsave(&local->cmdlock, flags);
374 issue = list_empty(&local->cmd_queue);
377 list_add_tail(&entry->list, &local->cmd_queue);
378 local->cmd_queue_len++;
379 spin_unlock_irqrestore(&local->cmdlock, flags);
383 goto wait_completion;
385 if (signal_pending(current))
389 if (hfa384x_cmd_issue(dev, entry))
396 if (!err && entry->type != CMD_COMPLETED) {
397 /* sleep until command is completed or timed out */
398 res = schedule_timeout(2 * HZ);
402 if (!err && signal_pending(current))
406 /* the command was issued, so a CmdCompl event should occur
407 * soon; however, there's a pending signal and
408 * schedule_timeout() would be interrupted; wait a short period
409 * of time to avoid removing entry from the list before
414 set_current_state(TASK_RUNNING);
415 remove_wait_queue(&entry->compl, &wait);
417 /* If entry->list is still in the list, it must be removed
418 * first and in this case prism2_cmd_ev() does not yet have
419 * local reference to it, and the data can be kfree()'d
420 * here. If the command completion event is still generated,
421 * it will be assigned to next (possibly) pending command, but
422 * the driver will reset the card anyway due to timeout
424 * If the entry is not in the list prism2_cmd_ev() has a local
425 * reference to it, but keeps cmdlock as long as the data is
426 * needed, so the data can be kfree()'d here. */
428 /* FIX: if the entry->list is in the list, it has not been completed
429 * yet, so removing it here is somewhat wrong.. this could cause
430 * references to freed memory and next list_del() causing NULL pointer
431 * dereference.. it would probably be better to leave the entry in the
432 * list and the list should be emptied during hw reset */
434 spin_lock_irqsave(&local->cmdlock, flags);
435 if (!list_empty(&entry->list)) {
436 printk(KERN_DEBUG "%s: hfa384x_cmd: entry still in list? "
437 "(entry=%p, type=%d, res=%d)\n", dev->name, entry,
439 list_del_init(&entry->list);
440 local->cmd_queue_len--;
442 spin_unlock_irqrestore(&local->cmdlock, flags);
445 printk(KERN_DEBUG "%s: hfa384x_cmd: interrupted; err=%d\n",
451 if (entry->type != CMD_COMPLETED) {
452 u16 reg = HFA384X_INW(HFA384X_EVSTAT_OFF);
453 printk(KERN_DEBUG "%s: hfa384x_cmd: command was not "
454 "completed (res=%d, entry=%p, type=%d, cmd=0x%04x, "
455 "param0=0x%04x, EVSTAT=%04x INTEN=%04x)\n", dev->name,
456 res, entry, entry->type, entry->cmd, entry->param0, reg,
457 HFA384X_INW(HFA384X_INTEN_OFF));
458 if (reg & HFA384X_EV_CMD) {
459 /* Command completion event is pending, but the
460 * interrupt was not delivered - probably an issue
461 * with pcmcia-cs configuration. */
462 printk(KERN_WARNING "%s: interrupt delivery does not "
463 "seem to work\n", dev->name);
465 prism2_io_debug_error(dev, 3);
471 *resp0 = entry->resp0;
472 #ifndef final_version
474 printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x, "
476 dev->name, cmd, entry->res, entry->resp0);
478 #endif /* final_version */
482 hostap_cmd_queue_free(local, entry, 1);
488 * hfa384x_cmd_callback - Issue a Prism2 command; callback when completed
489 * @dev: pointer to net_device
490 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
491 * @param0: value for Param0 register
492 * @callback: command completion callback function (%NULL = no callback)
493 * @context: context data to be given to the callback function
495 * Issue given command (possibly after waiting in command queue) and use
496 * callback function to indicate command completion. This can be called both
497 * from user and interrupt context. The callback function will be called in
498 * hardware IRQ context. It can be %NULL, when no function is called when
499 * command is completed.
501 static int hfa384x_cmd_callback(struct net_device *dev, u16 cmd, u16 param0,
502 void (*callback)(struct net_device *dev,
503 long context, u16 resp0,
507 struct hostap_interface *iface;
511 struct hostap_cmd_queue *entry;
513 iface = netdev_priv(dev);
514 local = iface->local;
516 if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN + 2) {
517 printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n",
522 entry = (struct hostap_cmd_queue *)
523 kmalloc(sizeof(*entry), GFP_ATOMIC);
525 printk(KERN_DEBUG "%s: hfa384x_cmd_callback - kmalloc "
526 "failed\n", dev->name);
529 memset(entry, 0, sizeof(*entry));
530 atomic_set(&entry->usecnt, 1);
531 entry->type = CMD_CALLBACK;
533 entry->param0 = param0;
534 entry->callback = callback;
535 entry->context = context;
537 spin_lock_irqsave(&local->cmdlock, flags);
538 issue = list_empty(&local->cmd_queue);
541 list_add_tail(&entry->list, &local->cmd_queue);
542 local->cmd_queue_len++;
543 spin_unlock_irqrestore(&local->cmdlock, flags);
545 if (issue && hfa384x_cmd_issue(dev, entry))
550 hostap_cmd_queue_free(local, entry, ret);
557 * __hfa384x_cmd_no_wait - Issue a Prism2 command (private)
558 * @dev: pointer to net_device
559 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
560 * @param0: value for Param0 register
561 * @io_debug_num: I/O debug error number
563 * Shared helper function for hfa384x_cmd_wait() and hfa384x_cmd_no_wait().
565 static int __hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, u16 param0,
571 /* wait until busy bit is clear; this should always be clear since the
572 * commands are serialized */
573 tries = HFA384X_CMD_BUSY_TIMEOUT;
574 while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) {
579 reg = HFA384X_INW(HFA384X_CMD_OFF);
580 prism2_io_debug_error(dev, io_debug_num);
581 printk(KERN_DEBUG "%s: __hfa384x_cmd_no_wait(%d) - timeout - "
582 "reg=0x%04x\n", dev->name, io_debug_num, reg);
587 HFA384X_OUTW(param0, HFA384X_PARAM0_OFF);
588 HFA384X_OUTW(cmd, HFA384X_CMD_OFF);
595 * hfa384x_cmd_wait - Issue a Prism2 command and busy wait for completion
596 * @dev: pointer to net_device
597 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
598 * @param0: value for Param0 register
600 static int hfa384x_cmd_wait(struct net_device *dev, u16 cmd, u16 param0)
605 res = __hfa384x_cmd_no_wait(dev, cmd, param0, 4);
609 /* wait for command completion */
610 if ((cmd & HFA384X_CMDCODE_MASK) == HFA384X_CMDCODE_DOWNLOAD)
611 tries = HFA384X_DL_COMPL_TIMEOUT;
613 tries = HFA384X_CMD_COMPL_TIMEOUT;
615 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) &&
621 reg = HFA384X_INW(HFA384X_EVSTAT_OFF);
622 prism2_io_debug_error(dev, 5);
623 printk(KERN_DEBUG "%s: hfa384x_cmd_wait - timeout2 - "
624 "reg=0x%04x\n", dev->name, reg);
628 res = (HFA384X_INW(HFA384X_STATUS_OFF) &
629 (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | BIT(9) |
631 #ifndef final_version
633 printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x\n",
634 dev->name, cmd, res);
638 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
645 * hfa384x_cmd_no_wait - Issue a Prism2 command; do not wait for completion
646 * @dev: pointer to net_device
647 * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
648 * @param0: value for Param0 register
650 static inline int hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd,
653 return __hfa384x_cmd_no_wait(dev, cmd, param0, 6);
658 * prism2_cmd_ev - Prism2 command completion event handler
659 * @dev: pointer to net_device
661 * Interrupt handler for command completion events. Called by the main
662 * interrupt handler in hardware IRQ context. Read Resp0 and status registers
663 * from the hardware and ACK the event. Depending on the issued command type
664 * either wake up the sleeping process that is waiting for command completion
665 * or call the callback function. Issue the next command, if one is pending.
667 static void prism2_cmd_ev(struct net_device *dev)
669 struct hostap_interface *iface;
671 struct hostap_cmd_queue *entry = NULL;
673 iface = netdev_priv(dev);
674 local = iface->local;
676 spin_lock(&local->cmdlock);
677 if (!list_empty(&local->cmd_queue)) {
678 entry = list_entry(local->cmd_queue.next,
679 struct hostap_cmd_queue, list);
680 atomic_inc(&entry->usecnt);
681 list_del_init(&entry->list);
682 local->cmd_queue_len--;
684 if (!entry->issued) {
685 printk(KERN_DEBUG "%s: Command completion event, but "
686 "cmd not issued\n", dev->name);
687 __hostap_cmd_queue_free(local, entry, 1);
691 spin_unlock(&local->cmdlock);
694 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
695 printk(KERN_DEBUG "%s: Command completion event, but no "
696 "pending commands\n", dev->name);
700 entry->resp0 = HFA384X_INW(HFA384X_RESP0_OFF);
701 entry->res = (HFA384X_INW(HFA384X_STATUS_OFF) &
702 (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) |
703 BIT(9) | BIT(8))) >> 8;
704 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
706 /* TODO: rest of the CmdEv handling could be moved to tasklet */
707 if (entry->type == CMD_SLEEP) {
708 entry->type = CMD_COMPLETED;
709 wake_up_interruptible(&entry->compl);
710 } else if (entry->type == CMD_CALLBACK) {
712 entry->callback(dev, entry->context, entry->resp0,
715 printk(KERN_DEBUG "%s: Invalid command completion type %d\n",
716 dev->name, entry->type);
718 hostap_cmd_queue_free(local, entry, 1);
720 /* issue next command, if pending */
722 spin_lock(&local->cmdlock);
723 if (!list_empty(&local->cmd_queue)) {
724 entry = list_entry(local->cmd_queue.next,
725 struct hostap_cmd_queue, list);
726 if (entry->issuing) {
727 /* hfa384x_cmd() has already started issuing this
728 * command, so do not start here */
732 atomic_inc(&entry->usecnt);
734 spin_unlock(&local->cmdlock);
737 /* issue next command; if command issuing fails, remove the
738 * entry from cmd_queue */
739 int res = hfa384x_cmd_issue(dev, entry);
740 spin_lock(&local->cmdlock);
741 __hostap_cmd_queue_free(local, entry, res);
742 spin_unlock(&local->cmdlock);
747 static inline int hfa384x_wait_offset(struct net_device *dev, u16 o_off)
749 int tries = HFA384X_BAP_BUSY_TIMEOUT;
750 int res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY;
752 while (res && tries > 0) {
755 res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY;
761 /* Offset must be even */
762 static int hfa384x_setup_bap(struct net_device *dev, u16 bap, u16 id,
768 if (offset % 2 || bap > 1)
772 o_off = HFA384X_OFFSET1_OFF;
773 s_off = HFA384X_SELECT1_OFF;
775 o_off = HFA384X_OFFSET0_OFF;
776 s_off = HFA384X_SELECT0_OFF;
779 if (hfa384x_wait_offset(dev, o_off)) {
780 prism2_io_debug_error(dev, 7);
781 printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout before\n",
787 HFA384X_OUTW(id, s_off);
788 HFA384X_OUTW(offset, o_off);
790 if (hfa384x_wait_offset(dev, o_off)) {
791 prism2_io_debug_error(dev, 8);
792 printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout after\n",
797 #ifndef final_version
798 if (HFA384X_INW(o_off) & HFA384X_OFFSET_ERR) {
799 prism2_io_debug_error(dev, 9);
800 printk(KERN_DEBUG "%s: hfa384x_setup_bap - offset error "
801 "(%d,0x04%x,%d); reg=0x%04x\n",
802 dev->name, bap, id, offset, HFA384X_INW(o_off));
812 static int hfa384x_get_rid(struct net_device *dev, u16 rid, void *buf, int len,
815 struct hostap_interface *iface;
818 struct hfa384x_rid_hdr rec;
820 iface = netdev_priv(dev);
821 local = iface->local;
824 printk(KERN_DEBUG "%s: cannot get RID %04x (len=%d) - no PRI "
825 "f/w\n", dev->name, rid, len);
826 return -ENOTTY; /* Well.. not really correct, but return
827 * something unique enough.. */
830 if ((local->func->card_present && !local->func->card_present(local)) ||
831 local->hw_downloading)
834 res = down_interruptible(&local->rid_bap_sem);
838 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS, rid, NULL, NULL);
840 printk(KERN_DEBUG "%s: hfa384x_get_rid: CMDCODE_ACCESS failed "
841 "(res=%d, rid=%04x, len=%d)\n",
842 dev->name, res, rid, len);
843 up(&local->rid_bap_sem);
847 spin_lock_bh(&local->baplock);
849 res = hfa384x_setup_bap(dev, BAP0, rid, 0);
851 res = hfa384x_from_bap(dev, BAP0, &rec, sizeof(rec));
853 if (le16_to_cpu(rec.len) == 0) {
854 /* RID not available */
858 rlen = (le16_to_cpu(rec.len) - 1) * 2;
859 if (!res && exact_len && rlen != len) {
860 printk(KERN_DEBUG "%s: hfa384x_get_rid - RID len mismatch: "
861 "rid=0x%04x, len=%d (expected %d)\n",
862 dev->name, rid, rlen, len);
867 res = hfa384x_from_bap(dev, BAP0, buf, len);
869 spin_unlock_bh(&local->baplock);
870 up(&local->rid_bap_sem);
874 printk(KERN_DEBUG "%s: hfa384x_get_rid (rid=%04x, "
875 "len=%d) - failed - res=%d\n", dev->name, rid,
877 if (res == -ETIMEDOUT)
878 prism2_hw_reset(dev);
886 static int hfa384x_set_rid(struct net_device *dev, u16 rid, void *buf, int len)
888 struct hostap_interface *iface;
890 struct hfa384x_rid_hdr rec;
893 iface = netdev_priv(dev);
894 local = iface->local;
897 printk(KERN_DEBUG "%s: cannot set RID %04x (len=%d) - no PRI "
898 "f/w\n", dev->name, rid, len);
899 return -ENOTTY; /* Well.. not really correct, but return
900 * something unique enough.. */
903 if ((local->func->card_present && !local->func->card_present(local)) ||
904 local->hw_downloading)
907 rec.rid = cpu_to_le16(rid);
908 /* RID len in words and +1 for rec.rid */
909 rec.len = cpu_to_le16(len / 2 + len % 2 + 1);
911 res = down_interruptible(&local->rid_bap_sem);
915 spin_lock_bh(&local->baplock);
916 res = hfa384x_setup_bap(dev, BAP0, rid, 0);
918 res = hfa384x_to_bap(dev, BAP0, &rec, sizeof(rec));
920 res = hfa384x_to_bap(dev, BAP0, buf, len);
921 spin_unlock_bh(&local->baplock);
924 printk(KERN_DEBUG "%s: hfa384x_set_rid (rid=%04x, len=%d) - "
925 "failed - res=%d\n", dev->name, rid, len, res);
926 up(&local->rid_bap_sem);
930 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS_WRITE, rid, NULL, NULL);
931 up(&local->rid_bap_sem);
933 printk(KERN_DEBUG "%s: hfa384x_set_rid: CMDCODE_ACCESS_WRITE "
934 "failed (res=%d, rid=%04x, len=%d)\n",
935 dev->name, res, rid, len);
939 if (res == -ETIMEDOUT)
940 prism2_hw_reset(dev);
946 static void hfa384x_disable_interrupts(struct net_device *dev)
948 /* disable interrupts and clear event status */
949 HFA384X_OUTW(0, HFA384X_INTEN_OFF);
950 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
954 static void hfa384x_enable_interrupts(struct net_device *dev)
956 /* ack pending events and enable interrupts from selected events */
957 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
958 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF);
962 static void hfa384x_events_no_bap0(struct net_device *dev)
964 HFA384X_OUTW(HFA384X_EVENT_MASK & ~HFA384X_BAP0_EVENTS,
969 static void hfa384x_events_all(struct net_device *dev)
971 HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF);
975 static void hfa384x_events_only_cmd(struct net_device *dev)
977 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_INTEN_OFF);
981 static u16 hfa384x_allocate_fid(struct net_device *dev, int len)
986 /* FIX: this could be replace with hfa384x_cmd() if the Alloc event
987 * below would be handled like CmdCompl event (sleep here, wake up from
988 * interrupt handler */
989 if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_ALLOC, len)) {
990 printk(KERN_DEBUG "%s: cannot allocate fid, len=%d\n",
995 delay = jiffies + HFA384X_ALLOC_COMPL_TIMEOUT;
996 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC) &&
997 time_before(jiffies, delay))
999 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC)) {
1000 printk("%s: fid allocate, len=%d - timeout\n", dev->name, len);
1004 fid = HFA384X_INW(HFA384X_ALLOCFID_OFF);
1005 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF);
1011 static int prism2_reset_port(struct net_device *dev)
1013 struct hostap_interface *iface;
1014 local_info_t *local;
1017 iface = netdev_priv(dev);
1018 local = iface->local;
1020 if (!local->dev_enabled)
1023 res = hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0,
1026 printk(KERN_DEBUG "%s: reset port failed to disable port\n",
1029 res = hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0,
1032 printk(KERN_DEBUG "%s: reset port failed to enable "
1033 "port\n", dev->name);
1036 /* It looks like at least some STA firmware versions reset
1037 * fragmentation threshold back to 2346 after enable command. Restore
1038 * the configured value, if it differs from this default. */
1039 if (local->fragm_threshold != 2346 &&
1040 hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD,
1041 local->fragm_threshold)) {
1042 printk(KERN_DEBUG "%s: failed to restore fragmentation "
1043 "threshold (%d) after Port0 enable\n",
1044 dev->name, local->fragm_threshold);
1051 static int prism2_get_version_info(struct net_device *dev, u16 rid,
1054 struct hfa384x_comp_ident comp;
1055 struct hostap_interface *iface;
1056 local_info_t *local;
1058 iface = netdev_priv(dev);
1059 local = iface->local;
1061 if (local->no_pri) {
1062 /* PRI f/w not yet available - cannot read RIDs */
1065 if (hfa384x_get_rid(dev, rid, &comp, sizeof(comp), 1) < 0) {
1066 printk(KERN_DEBUG "Could not get RID for component %s\n", txt);
1070 printk(KERN_INFO "%s: %s: id=0x%02x v%d.%d.%d\n", dev->name, txt,
1071 __le16_to_cpu(comp.id), __le16_to_cpu(comp.major),
1072 __le16_to_cpu(comp.minor), __le16_to_cpu(comp.variant));
1077 static int prism2_setup_rids(struct net_device *dev)
1079 struct hostap_interface *iface;
1080 local_info_t *local;
1084 iface = netdev_priv(dev);
1085 local = iface->local;
1087 hostap_set_word(dev, HFA384X_RID_TICKTIME, 2000);
1089 if (!local->fw_ap) {
1090 tmp = hostap_get_porttype(local);
1091 ret = hostap_set_word(dev, HFA384X_RID_CNFPORTTYPE, tmp);
1093 printk("%s: Port type setting to %d failed\n",
1099 /* Setting SSID to empty string seems to kill the card in Host AP mode
1101 if (local->iw_mode != IW_MODE_MASTER || local->essid[0] != '\0') {
1102 ret = hostap_set_string(dev, HFA384X_RID_CNFOWNSSID,
1105 printk("%s: AP own SSID setting failed\n", dev->name);
1110 ret = hostap_set_word(dev, HFA384X_RID_CNFMAXDATALEN,
1111 PRISM2_DATA_MAXLEN);
1113 printk("%s: MAC data length setting to %d failed\n",
1114 dev->name, PRISM2_DATA_MAXLEN);
1118 if (hfa384x_get_rid(dev, HFA384X_RID_CHANNELLIST, &tmp, 2, 1) < 0) {
1119 printk("%s: Channel list read failed\n", dev->name);
1123 local->channel_mask = __le16_to_cpu(tmp);
1125 if (local->channel < 1 || local->channel > 14 ||
1126 !(local->channel_mask & (1 << (local->channel - 1)))) {
1127 printk(KERN_WARNING "%s: Channel setting out of range "
1128 "(%d)!\n", dev->name, local->channel);
1133 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNCHANNEL, local->channel);
1135 printk("%s: Channel setting to %d failed\n",
1136 dev->name, local->channel);
1140 ret = hostap_set_word(dev, HFA384X_RID_CNFBEACONINT,
1143 printk("%s: Beacon interval setting to %d failed\n",
1144 dev->name, local->beacon_int);
1145 /* this may fail with Symbol/Lucent firmware */
1146 if (ret == -ETIMEDOUT)
1150 ret = hostap_set_word(dev, HFA384X_RID_CNFOWNDTIMPERIOD,
1151 local->dtim_period);
1153 printk("%s: DTIM period setting to %d failed\n",
1154 dev->name, local->dtim_period);
1155 /* this may fail with Symbol/Lucent firmware */
1156 if (ret == -ETIMEDOUT)
1160 ret = hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE,
1163 printk(KERN_INFO "%s: Setting promiscuous mode (%d) failed\n",
1164 dev->name, local->is_promisc);
1166 if (!local->fw_ap) {
1167 ret = hostap_set_string(dev, HFA384X_RID_CNFDESIREDSSID,
1170 printk("%s: Desired SSID setting failed\n", dev->name);
1175 /* Setup TXRateControl, defaults to allow use of 1, 2, 5.5, and
1176 * 11 Mbps in automatic TX rate fallback and 1 and 2 Mbps as basic
1178 if (local->tx_rate_control == 0) {
1179 local->tx_rate_control =
1180 HFA384X_RATES_1MBPS |
1181 HFA384X_RATES_2MBPS |
1182 HFA384X_RATES_5MBPS |
1183 HFA384X_RATES_11MBPS;
1185 if (local->basic_rates == 0)
1186 local->basic_rates = HFA384X_RATES_1MBPS | HFA384X_RATES_2MBPS;
1188 if (!local->fw_ap) {
1189 ret = hostap_set_word(dev, HFA384X_RID_TXRATECONTROL,
1190 local->tx_rate_control);
1192 printk("%s: TXRateControl setting to %d failed\n",
1193 dev->name, local->tx_rate_control);
1197 ret = hostap_set_word(dev, HFA384X_RID_CNFSUPPORTEDRATES,
1198 local->tx_rate_control);
1200 printk("%s: cnfSupportedRates setting to %d failed\n",
1201 dev->name, local->tx_rate_control);
1204 ret = hostap_set_word(dev, HFA384X_RID_CNFBASICRATES,
1205 local->basic_rates);
1207 printk("%s: cnfBasicRates setting to %d failed\n",
1208 dev->name, local->basic_rates);
1211 ret = hostap_set_word(dev, HFA384X_RID_CREATEIBSS, 1);
1213 printk("%s: Create IBSS setting to 1 failed\n",
1218 if (local->name_set)
1219 (void) hostap_set_string(dev, HFA384X_RID_CNFOWNNAME,
1222 if (hostap_set_encryption(local)) {
1223 printk(KERN_INFO "%s: could not configure encryption\n",
1227 (void) hostap_set_antsel(local);
1229 if (hostap_set_roaming(local)) {
1230 printk(KERN_INFO "%s: could not set host roaming\n",
1234 if (local->sta_fw_ver >= PRISM2_FW_VER(1,6,3) &&
1235 hostap_set_word(dev, HFA384X_RID_CNFENHSECURITY, local->enh_sec))
1236 printk(KERN_INFO "%s: cnfEnhSecurity setting to 0x%x failed\n",
1237 dev->name, local->enh_sec);
1239 /* 32-bit tallies were added in STA f/w 0.8.0, but they were apparently
1240 * not working correctly (last seven counters report bogus values).
1241 * This has been fixed in 0.8.2, so enable 32-bit tallies only
1242 * beginning with that firmware version. Another bug fix for 32-bit
1243 * tallies in 1.4.0; should 16-bit tallies be used for some other
1245 if (local->sta_fw_ver >= PRISM2_FW_VER(0,8,2)) {
1246 if (hostap_set_word(dev, HFA384X_RID_CNFTHIRTY2TALLY, 1)) {
1247 printk(KERN_INFO "%s: cnfThirty2Tally setting "
1248 "failed\n", dev->name);
1249 local->tallies32 = 0;
1251 local->tallies32 = 1;
1253 local->tallies32 = 0;
1255 hostap_set_auth_algs(local);
1257 if (hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD,
1258 local->fragm_threshold)) {
1259 printk(KERN_INFO "%s: setting FragmentationThreshold to %d "
1260 "failed\n", dev->name, local->fragm_threshold);
1263 if (hostap_set_word(dev, HFA384X_RID_RTSTHRESHOLD,
1264 local->rts_threshold)) {
1265 printk(KERN_INFO "%s: setting RTSThreshold to %d failed\n",
1266 dev->name, local->rts_threshold);
1269 if (local->manual_retry_count >= 0 &&
1270 hostap_set_word(dev, HFA384X_RID_CNFALTRETRYCOUNT,
1271 local->manual_retry_count)) {
1272 printk(KERN_INFO "%s: setting cnfAltRetryCount to %d failed\n",
1273 dev->name, local->manual_retry_count);
1276 if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1) &&
1277 hfa384x_get_rid(dev, HFA384X_RID_CNFDBMADJUST, &tmp, 2, 1) == 2) {
1278 local->rssi_to_dBm = le16_to_cpu(tmp);
1281 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->wpa &&
1282 hostap_set_word(dev, HFA384X_RID_SSNHANDLINGMODE, 1)) {
1283 printk(KERN_INFO "%s: setting ssnHandlingMode to 1 failed\n",
1287 if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->generic_elem &&
1288 hfa384x_set_rid(dev, HFA384X_RID_GENERICELEMENT,
1289 local->generic_elem, local->generic_elem_len)) {
1290 printk(KERN_INFO "%s: setting genericElement failed\n",
1299 static int prism2_hw_init(struct net_device *dev, int initial)
1301 struct hostap_interface *iface;
1302 local_info_t *local;
1304 unsigned long start, delay;
1306 PDEBUG(DEBUG_FLOW, "prism2_hw_init()\n");
1308 iface = netdev_priv(dev);
1309 local = iface->local;
1311 clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits);
1314 /* initialize HFA 384x */
1315 ret = hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_INIT, 0);
1317 printk(KERN_INFO "%s: first command failed - assuming card "
1318 "does not have primary firmware\n", dev_info);
1321 if (first && (HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) {
1322 /* EvStat has Cmd bit set in some cases, so retry once if no
1323 * wait was needed */
1324 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
1325 printk(KERN_DEBUG "%s: init command completed too quickly - "
1326 "retrying\n", dev->name);
1332 delay = jiffies + HFA384X_INIT_TIMEOUT;
1333 while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) &&
1334 time_before(jiffies, delay))
1336 if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) {
1337 printk(KERN_DEBUG "%s: assuming no Primary image in "
1338 "flash - card initialization not completed\n",
1341 #ifdef PRISM2_DOWNLOAD_SUPPORT
1342 if (local->sram_type == -1)
1343 local->sram_type = prism2_get_ram_size(local);
1344 #endif /* PRISM2_DOWNLOAD_SUPPORT */
1348 printk(KERN_DEBUG "prism2_hw_init: initialized in %lu ms\n",
1349 (jiffies - start) * 1000 / HZ);
1350 HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
1355 static int prism2_hw_init2(struct net_device *dev, int initial)
1357 struct hostap_interface *iface;
1358 local_info_t *local;
1361 iface = netdev_priv(dev);
1362 local = iface->local;
1364 #ifdef PRISM2_DOWNLOAD_SUPPORT
1369 local->pda = prism2_read_pda(dev);
1370 #endif /* PRISM2_DOWNLOAD_SUPPORT */
1372 hfa384x_disable_interrupts(dev);
1374 #ifndef final_version
1375 HFA384X_OUTW(HFA384X_MAGIC, HFA384X_SWSUPPORT0_OFF);
1376 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) {
1377 printk("SWSUPPORT0 write/read failed: %04X != %04X\n",
1378 HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC);
1383 if (initial || local->pri_only) {
1384 hfa384x_events_only_cmd(dev);
1385 /* get card version information */
1386 if (prism2_get_version_info(dev, HFA384X_RID_NICID, "NIC") ||
1387 prism2_get_version_info(dev, HFA384X_RID_PRIID, "PRI")) {
1388 hfa384x_disable_interrupts(dev);
1392 if (prism2_get_version_info(dev, HFA384X_RID_STAID, "STA")) {
1393 printk(KERN_DEBUG "%s: Failed to read STA f/w version "
1394 "- only Primary f/w present\n", dev->name);
1395 local->pri_only = 1;
1398 local->pri_only = 0;
1399 hfa384x_disable_interrupts(dev);
1402 /* FIX: could convert allocate_fid to use sleeping CmdCompl wait and
1403 * enable interrupts before this. This would also require some sort of
1404 * sleeping AllocEv waiting */
1406 /* allocate TX FIDs */
1407 local->txfid_len = PRISM2_TXFID_LEN;
1408 for (i = 0; i < PRISM2_TXFID_COUNT; i++) {
1409 local->txfid[i] = hfa384x_allocate_fid(dev, local->txfid_len);
1410 if (local->txfid[i] == 0xffff && local->txfid_len > 1600) {
1411 local->txfid[i] = hfa384x_allocate_fid(dev, 1600);
1412 if (local->txfid[i] != 0xffff) {
1413 printk(KERN_DEBUG "%s: Using shorter TX FID "
1414 "(1600 bytes)\n", dev->name);
1415 local->txfid_len = 1600;
1418 if (local->txfid[i] == 0xffff)
1420 local->intransmitfid[i] = PRISM2_TXFID_EMPTY;
1423 hfa384x_events_only_cmd(dev);
1426 struct list_head *ptr;
1427 prism2_check_sta_fw_version(local);
1429 if (hfa384x_get_rid(dev, HFA384X_RID_CNFOWNMACADDR,
1430 &dev->dev_addr, 6, 1) < 0) {
1431 printk("%s: could not get own MAC address\n",
1434 list_for_each(ptr, &local->hostap_interfaces) {
1435 iface = list_entry(ptr, struct hostap_interface, list);
1436 memcpy(iface->dev->dev_addr, dev->dev_addr, ETH_ALEN);
1438 } else if (local->fw_ap)
1439 prism2_check_sta_fw_version(local);
1441 prism2_setup_rids(dev);
1443 /* MAC is now configured, but port 0 is not yet enabled */
1448 printk(KERN_WARNING "%s: Initialization failed\n", dev_info);
1453 static int prism2_hw_enable(struct net_device *dev, int initial)
1455 struct hostap_interface *iface;
1456 local_info_t *local;
1459 iface = netdev_priv(dev);
1460 local = iface->local;
1461 was_resetting = local->hw_resetting;
1463 if (hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, NULL, NULL)) {
1464 printk("%s: MAC port 0 enabling failed\n", dev->name);
1468 local->hw_ready = 1;
1469 local->hw_reset_tries = 0;
1470 local->hw_resetting = 0;
1471 hfa384x_enable_interrupts(dev);
1473 /* at least D-Link DWL-650 seems to require additional port reset
1474 * before it starts acting as an AP, so reset port automatically
1475 * here just in case */
1476 if (initial && prism2_reset_port(dev)) {
1477 printk("%s: MAC port 0 reseting failed\n", dev->name);
1481 if (was_resetting && netif_queue_stopped(dev)) {
1482 /* If hw_reset() was called during pending transmit, netif
1483 * queue was stopped. Wake it up now since the wlan card has
1485 netif_wake_queue(dev);
1492 static int prism2_hw_config(struct net_device *dev, int initial)
1494 struct hostap_interface *iface;
1495 local_info_t *local;
1497 iface = netdev_priv(dev);
1498 local = iface->local;
1500 if (local->hw_downloading)
1503 if (prism2_hw_init(dev, initial)) {
1504 return local->no_pri ? 0 : 1;
1507 if (prism2_hw_init2(dev, initial))
1510 /* Enable firmware if secondary image is loaded and at least one of the
1511 * netdevices is up. */
1512 if (!local->pri_only &&
1513 (initial == 0 || (initial == 2 && local->num_dev_open > 0))) {
1514 if (!local->dev_enabled)
1515 prism2_callback(local, PRISM2_CALLBACK_ENABLE);
1516 local->dev_enabled = 1;
1517 return prism2_hw_enable(dev, initial);
1524 static void prism2_hw_shutdown(struct net_device *dev, int no_disable)
1526 struct hostap_interface *iface;
1527 local_info_t *local;
1529 iface = netdev_priv(dev);
1530 local = iface->local;
1532 /* Allow only command completion events during disable */
1533 hfa384x_events_only_cmd(dev);
1535 local->hw_ready = 0;
1536 if (local->dev_enabled)
1537 prism2_callback(local, PRISM2_CALLBACK_DISABLE);
1538 local->dev_enabled = 0;
1540 if (local->func->card_present && !local->func->card_present(local)) {
1541 printk(KERN_DEBUG "%s: card already removed or not configured "
1542 "during shutdown\n", dev->name);
1546 if ((no_disable & HOSTAP_HW_NO_DISABLE) == 0 &&
1547 hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, NULL, NULL))
1548 printk(KERN_WARNING "%s: Shutdown failed\n", dev_info);
1550 hfa384x_disable_interrupts(dev);
1552 if (no_disable & HOSTAP_HW_ENABLE_CMDCOMPL)
1553 hfa384x_events_only_cmd(dev);
1555 prism2_clear_cmd_queue(local);
1559 static void prism2_hw_reset(struct net_device *dev)
1561 struct hostap_interface *iface;
1562 local_info_t *local;
1565 static long last_reset = 0;
1567 /* do not reset card more than once per second to avoid ending up in a
1568 * busy loop reseting the card */
1569 if (time_before_eq(jiffies, last_reset + HZ))
1571 last_reset = jiffies;
1574 iface = netdev_priv(dev);
1575 local = iface->local;
1577 if (in_interrupt()) {
1578 printk(KERN_DEBUG "%s: driver bug - prism2_hw_reset() called "
1579 "in interrupt context\n", dev->name);
1583 if (local->hw_downloading)
1586 if (local->hw_resetting) {
1587 printk(KERN_WARNING "%s: %s: already resetting card - "
1588 "ignoring reset request\n", dev_info, dev->name);
1592 local->hw_reset_tries++;
1593 if (local->hw_reset_tries > 10) {
1594 printk(KERN_WARNING "%s: too many reset tries, skipping\n",
1599 printk(KERN_WARNING "%s: %s: resetting card\n", dev_info, dev->name);
1600 hfa384x_disable_interrupts(dev);
1601 local->hw_resetting = 1;
1602 if (local->func->cor_sreset) {
1603 /* Host system seems to hang in some cases with high traffic
1604 * load or shared interrupts during COR sreset. Disable shared
1605 * interrupts during reset to avoid these crashes. COS sreset
1606 * takes quite a long time, so it is unfortunate that this
1607 * seems to be needed. Anyway, I do not know of any better way
1608 * of avoiding the crash. */
1609 disable_irq(dev->irq);
1610 local->func->cor_sreset(local);
1611 enable_irq(dev->irq);
1613 prism2_hw_shutdown(dev, 1);
1614 prism2_hw_config(dev, 0);
1615 local->hw_resetting = 0;
1617 #ifdef PRISM2_DOWNLOAD_SUPPORT
1618 if (local->dl_pri) {
1619 printk(KERN_DEBUG "%s: persistent download of primary "
1620 "firmware\n", dev->name);
1621 if (prism2_download_genesis(local, local->dl_pri) < 0)
1622 printk(KERN_WARNING "%s: download (PRI) failed\n",
1626 if (local->dl_sec) {
1627 printk(KERN_DEBUG "%s: persistent download of secondary "
1628 "firmware\n", dev->name);
1629 if (prism2_download_volatile(local, local->dl_sec) < 0)
1630 printk(KERN_WARNING "%s: download (SEC) failed\n",
1633 #endif /* PRISM2_DOWNLOAD_SUPPORT */
1635 /* TODO: restore beacon TIM bits for STAs that have buffered frames */
1639 static void prism2_schedule_reset(local_info_t *local)
1641 schedule_work(&local->reset_queue);
1645 /* Called only as scheduled task after noticing card timeout in interrupt
1647 static void handle_reset_queue(void *data)
1649 local_info_t *local = (local_info_t *) data;
1651 printk(KERN_DEBUG "%s: scheduled card reset\n", local->dev->name);
1652 prism2_hw_reset(local->dev);
1654 if (netif_queue_stopped(local->dev)) {
1657 for (i = 0; i < PRISM2_TXFID_COUNT; i++)
1658 if (local->intransmitfid[i] == PRISM2_TXFID_EMPTY) {
1659 PDEBUG(DEBUG_EXTRA, "prism2_tx_timeout: "
1661 netif_wake_queue(local->dev);
1668 static int prism2_get_txfid_idx(local_info_t *local)
1671 unsigned long flags;
1673 spin_lock_irqsave(&local->txfidlock, flags);
1674 end = idx = local->next_txfid;
1676 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) {
1677 local->intransmitfid[idx] = PRISM2_TXFID_RESERVED;
1678 spin_unlock_irqrestore(&local->txfidlock, flags);
1682 if (idx >= PRISM2_TXFID_COUNT)
1684 } while (idx != end);
1685 spin_unlock_irqrestore(&local->txfidlock, flags);
1687 PDEBUG(DEBUG_EXTRA2, "prism2_get_txfid_idx: no room in txfid buf: "
1688 "packet dropped\n");
1689 local->stats.tx_dropped++;
1695 /* Called only from hardware IRQ */
1696 static void prism2_transmit_cb(struct net_device *dev, long context,
1699 struct hostap_interface *iface;
1700 local_info_t *local;
1701 int idx = (int) context;
1703 iface = netdev_priv(dev);
1704 local = iface->local;
1707 printk(KERN_DEBUG "%s: prism2_transmit_cb - res=0x%02x\n",
1712 if (idx < 0 || idx >= PRISM2_TXFID_COUNT) {
1713 printk(KERN_DEBUG "%s: prism2_transmit_cb called with invalid "
1714 "idx=%d\n", dev->name, idx);
1718 if (!test_and_clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
1719 printk(KERN_DEBUG "%s: driver bug: prism2_transmit_cb called "
1720 "with no pending transmit\n", dev->name);
1723 if (netif_queue_stopped(dev)) {
1724 /* ready for next TX, so wake up queue that was stopped in
1725 * prism2_transmit() */
1726 netif_wake_queue(dev);
1729 spin_lock(&local->txfidlock);
1731 /* With reclaim, Resp0 contains new txfid for transmit; the old txfid
1732 * will be automatically allocated for the next TX frame */
1733 local->intransmitfid[idx] = resp0;
1735 PDEBUG(DEBUG_FID, "%s: prism2_transmit_cb: txfid[%d]=0x%04x, "
1736 "resp0=0x%04x, transmit_txfid=0x%04x\n",
1737 dev->name, idx, local->txfid[idx],
1738 resp0, local->intransmitfid[local->next_txfid]);
1741 if (idx >= PRISM2_TXFID_COUNT)
1743 local->next_txfid = idx;
1745 /* check if all TX buffers are occupied */
1747 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) {
1748 spin_unlock(&local->txfidlock);
1752 if (idx >= PRISM2_TXFID_COUNT)
1754 } while (idx != local->next_txfid);
1755 spin_unlock(&local->txfidlock);
1757 /* no empty TX buffers, stop queue */
1758 netif_stop_queue(dev);
1762 /* Called only from software IRQ if PCI bus master is not used (with bus master
1763 * this can be called both from software and hardware IRQ) */
1764 static int prism2_transmit(struct net_device *dev, int idx)
1766 struct hostap_interface *iface;
1767 local_info_t *local;
1770 iface = netdev_priv(dev);
1771 local = iface->local;
1773 /* The driver tries to stop netif queue so that there would not be
1774 * more than one attempt to transmit frames going on; check that this
1775 * is really the case */
1777 if (test_and_set_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
1778 printk(KERN_DEBUG "%s: driver bug - prism2_transmit() called "
1779 "when previous TX was pending\n", dev->name);
1783 /* stop the queue for the time that transmit is pending */
1784 netif_stop_queue(dev);
1786 /* transmit packet */
1787 res = hfa384x_cmd_callback(
1789 HFA384X_CMDCODE_TRANSMIT | HFA384X_CMD_TX_RECLAIM,
1791 prism2_transmit_cb, (long) idx);
1794 struct net_device_stats *stats;
1795 printk(KERN_DEBUG "%s: prism2_transmit: CMDCODE_TRANSMIT "
1796 "failed (res=%d)\n", dev->name, res);
1797 stats = hostap_get_stats(dev);
1798 stats->tx_dropped++;
1799 netif_wake_queue(dev);
1802 dev->trans_start = jiffies;
1804 /* Since we did not wait for command completion, the card continues
1805 * to process on the background and we will finish handling when
1806 * command completion event is handled (prism2_cmd_ev() function) */
1812 /* Send IEEE 802.11 frame (convert the header into Prism2 TX descriptor and
1813 * send the payload with this descriptor) */
1814 /* Called only from software IRQ */
1815 static int prism2_tx_80211(struct sk_buff *skb, struct net_device *dev)
1817 struct hostap_interface *iface;
1818 local_info_t *local;
1819 struct hfa384x_tx_frame txdesc;
1820 struct hostap_skb_tx_data *meta;
1821 int hdr_len, data_len, idx, res, ret = -1;
1824 iface = netdev_priv(dev);
1825 local = iface->local;
1827 meta = (struct hostap_skb_tx_data *) skb->cb;
1829 prism2_callback(local, PRISM2_CALLBACK_TX_START);
1831 if ((local->func->card_present && !local->func->card_present(local)) ||
1832 !local->hw_ready || local->hw_downloading || local->pri_only) {
1833 if (net_ratelimit()) {
1834 printk(KERN_DEBUG "%s: prism2_tx_80211: hw not ready -"
1835 " skipping\n", dev->name);
1840 memset(&txdesc, 0, sizeof(txdesc));
1842 /* skb->data starts with txdesc->frame_control */
1844 memcpy(&txdesc.frame_control, skb->data, hdr_len);
1845 fc = le16_to_cpu(txdesc.frame_control);
1846 if (WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA &&
1847 (fc & WLAN_FC_FROMDS) && (fc & WLAN_FC_TODS) && skb->len >= 30) {
1849 memcpy(txdesc.addr4, skb->data + hdr_len, ETH_ALEN);
1850 hdr_len += ETH_ALEN;
1853 tx_control = local->tx_control;
1854 if (meta->tx_cb_idx) {
1855 tx_control |= HFA384X_TX_CTRL_TX_OK;
1856 txdesc.sw_support = cpu_to_le16(meta->tx_cb_idx);
1858 txdesc.tx_control = cpu_to_le16(tx_control);
1859 txdesc.tx_rate = meta->rate;
1861 data_len = skb->len - hdr_len;
1862 txdesc.data_len = cpu_to_le16(data_len);
1863 txdesc.len = cpu_to_be16(data_len);
1865 idx = prism2_get_txfid_idx(local);
1869 if (local->frame_dump & PRISM2_DUMP_TX_HDR)
1870 hostap_dump_tx_header(dev->name, &txdesc);
1872 spin_lock(&local->baplock);
1873 res = hfa384x_setup_bap(dev, BAP0, local->txfid[idx], 0);
1876 res = hfa384x_to_bap(dev, BAP0, &txdesc, sizeof(txdesc));
1878 res = hfa384x_to_bap(dev, BAP0, skb->data + hdr_len,
1879 skb->len - hdr_len);
1880 spin_unlock(&local->baplock);
1883 res = prism2_transmit(dev, idx);
1885 printk(KERN_DEBUG "%s: prism2_tx_80211 - to BAP0 failed\n",
1887 local->intransmitfid[idx] = PRISM2_TXFID_EMPTY;
1888 schedule_work(&local->reset_queue);
1895 prism2_callback(local, PRISM2_CALLBACK_TX_END);
1900 /* Some SMP systems have reported number of odd errors with hostap_pci. fid
1901 * register has changed values between consecutive reads for an unknown reason.
1902 * This should really not happen, so more debugging is needed. This test
1903 * version is a big slower, but it will detect most of such register changes
1904 * and will try to get the correct fid eventually. */
1905 #define EXTRA_FID_READ_TESTS
1907 static inline u16 prism2_read_fid_reg(struct net_device *dev, u16 reg)
1909 #ifdef EXTRA_FID_READ_TESTS
1910 u16 val, val2, val3;
1913 for (i = 0; i < 10; i++) {
1914 val = HFA384X_INW(reg);
1915 val2 = HFA384X_INW(reg);
1916 val3 = HFA384X_INW(reg);
1918 if (val == val2 && val == val3)
1921 printk(KERN_DEBUG "%s: detected fid change (try=%d, reg=%04x):"
1922 " %04x %04x %04x\n",
1923 dev->name, i, reg, val, val2, val3);
1924 if ((val == val2 || val == val3) && val != 0)
1926 if (val2 == val3 && val2 != 0)
1929 printk(KERN_WARNING "%s: Uhhuh.. could not read good fid from reg "
1930 "%04x (%04x %04x %04x)\n", dev->name, reg, val, val2, val3);
1932 #else /* EXTRA_FID_READ_TESTS */
1933 return HFA384X_INW(reg);
1934 #endif /* EXTRA_FID_READ_TESTS */
1938 /* Called only as a tasklet (software IRQ) */
1939 static void prism2_rx(local_info_t *local)
1941 struct net_device *dev = local->dev;
1942 int res, rx_pending = 0;
1943 u16 len, hdr_len, rxfid, status, macport;
1944 struct net_device_stats *stats;
1945 struct hfa384x_rx_frame rxdesc;
1946 struct sk_buff *skb = NULL;
1948 prism2_callback(local, PRISM2_CALLBACK_RX_START);
1949 stats = hostap_get_stats(dev);
1951 rxfid = prism2_read_fid_reg(dev, HFA384X_RXFID_OFF);
1952 #ifndef final_version
1954 rxfid = HFA384X_INW(HFA384X_RXFID_OFF);
1955 printk(KERN_DEBUG "prism2_rx: rxfid=0 (next 0x%04x)\n",
1958 schedule_work(&local->reset_queue);
1961 /* try to continue with the new rxfid value */
1965 spin_lock(&local->baplock);
1966 res = hfa384x_setup_bap(dev, BAP0, rxfid, 0);
1968 res = hfa384x_from_bap(dev, BAP0, &rxdesc, sizeof(rxdesc));
1971 spin_unlock(&local->baplock);
1972 printk(KERN_DEBUG "%s: copy from BAP0 failed %d\n", dev->name,
1974 if (res == -ETIMEDOUT) {
1975 schedule_work(&local->reset_queue);
1980 len = le16_to_cpu(rxdesc.data_len);
1981 hdr_len = sizeof(rxdesc);
1982 status = le16_to_cpu(rxdesc.status);
1983 macport = (status >> 8) & 0x07;
1985 /* Drop frames with too large reported payload length. Monitor mode
1986 * seems to sometimes pass frames (e.g., ctrl::ack) with signed and
1987 * negative value, so allow also values 65522 .. 65534 (-14 .. -2) for
1989 if (len > PRISM2_DATA_MAXLEN + 8 /* WEP */) {
1990 if (macport == 7 && local->iw_mode == IW_MODE_MONITOR) {
1991 if (len >= (u16) -14) {
1992 hdr_len -= 65535 - len;
1997 spin_unlock(&local->baplock);
1998 printk(KERN_DEBUG "%s: Received frame with invalid "
1999 "length 0x%04x\n", dev->name, len);
2000 hostap_dump_rx_header(dev->name, &rxdesc);
2005 skb = dev_alloc_skb(len + hdr_len);
2007 spin_unlock(&local->baplock);
2008 printk(KERN_DEBUG "%s: RX failed to allocate skb\n",
2013 memcpy(skb_put(skb, hdr_len), &rxdesc, hdr_len);
2016 res = hfa384x_from_bap(dev, BAP0, skb_put(skb, len), len);
2017 spin_unlock(&local->baplock);
2019 printk(KERN_DEBUG "%s: RX failed to read "
2020 "frame data\n", dev->name);
2024 skb_queue_tail(&local->rx_list, skb);
2025 tasklet_schedule(&local->rx_tasklet);
2028 prism2_callback(local, PRISM2_CALLBACK_RX_END);
2030 HFA384X_OUTW(HFA384X_EV_RX, HFA384X_EVACK_OFF);
2036 stats->rx_dropped++;
2043 /* Called only as a tasklet (software IRQ) */
2044 static void hostap_rx_skb(local_info_t *local, struct sk_buff *skb)
2046 struct hfa384x_rx_frame *rxdesc;
2047 struct net_device *dev = skb->dev;
2048 struct hostap_80211_rx_status stats;
2049 int hdrlen, rx_hdrlen;
2051 rx_hdrlen = sizeof(*rxdesc);
2052 if (skb->len < sizeof(*rxdesc)) {
2053 /* Allow monitor mode to receive shorter frames */
2054 if (local->iw_mode == IW_MODE_MONITOR &&
2055 skb->len >= sizeof(*rxdesc) - 30) {
2056 rx_hdrlen = skb->len;
2063 rxdesc = (struct hfa384x_rx_frame *) skb->data;
2065 if (local->frame_dump & PRISM2_DUMP_RX_HDR &&
2066 skb->len >= sizeof(*rxdesc))
2067 hostap_dump_rx_header(dev->name, rxdesc);
2069 if (le16_to_cpu(rxdesc->status) & HFA384X_RX_STATUS_FCSERR &&
2070 (!local->monitor_allow_fcserr ||
2071 local->iw_mode != IW_MODE_MONITOR))
2074 if (skb->len > PRISM2_DATA_MAXLEN) {
2075 printk(KERN_DEBUG "%s: RX: len(%d) > MAX(%d)\n",
2076 dev->name, skb->len, PRISM2_DATA_MAXLEN);
2080 stats.mac_time = le32_to_cpu(rxdesc->time);
2081 stats.signal = rxdesc->signal - local->rssi_to_dBm;
2082 stats.noise = rxdesc->silence - local->rssi_to_dBm;
2083 stats.rate = rxdesc->rate;
2085 /* Convert Prism2 RX structure into IEEE 802.11 header */
2086 hdrlen = hostap_80211_get_hdrlen(le16_to_cpu(rxdesc->frame_control));
2087 if (hdrlen > rx_hdrlen)
2090 memmove(skb_pull(skb, rx_hdrlen - hdrlen),
2091 &rxdesc->frame_control, hdrlen);
2093 hostap_80211_rx(dev, skb, &stats);
2101 /* Called only as a tasklet (software IRQ) */
2102 static void hostap_rx_tasklet(unsigned long data)
2104 local_info_t *local = (local_info_t *) data;
2105 struct sk_buff *skb;
2107 while ((skb = skb_dequeue(&local->rx_list)) != NULL)
2108 hostap_rx_skb(local, skb);
2112 /* Called only from hardware IRQ */
2113 static void prism2_alloc_ev(struct net_device *dev)
2115 struct hostap_interface *iface;
2116 local_info_t *local;
2120 iface = netdev_priv(dev);
2121 local = iface->local;
2123 fid = prism2_read_fid_reg(dev, HFA384X_ALLOCFID_OFF);
2125 PDEBUG(DEBUG_FID, "FID: interrupt: ALLOC - fid=0x%04x\n", fid);
2127 spin_lock(&local->txfidlock);
2128 idx = local->next_alloc;
2131 if (local->txfid[idx] == fid) {
2132 PDEBUG(DEBUG_FID, "FID: found matching txfid[%d]\n",
2135 #ifndef final_version
2136 if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY)
2137 printk("Already released txfid found at idx "
2139 if (local->intransmitfid[idx] == PRISM2_TXFID_RESERVED)
2140 printk("Already reserved txfid found at idx "
2143 local->intransmitfid[idx] = PRISM2_TXFID_EMPTY;
2145 local->next_alloc = idx >= PRISM2_TXFID_COUNT ? 0 :
2148 if (!test_bit(HOSTAP_BITS_TRANSMIT, &local->bits) &&
2149 netif_queue_stopped(dev))
2150 netif_wake_queue(dev);
2152 spin_unlock(&local->txfidlock);
2157 if (idx >= PRISM2_TXFID_COUNT)
2159 } while (idx != local->next_alloc);
2161 printk(KERN_WARNING "%s: could not find matching txfid (0x%04x, new "
2162 "read 0x%04x) for alloc event\n", dev->name, fid,
2163 HFA384X_INW(HFA384X_ALLOCFID_OFF));
2164 printk(KERN_DEBUG "TXFIDs:");
2165 for (idx = 0; idx < PRISM2_TXFID_COUNT; idx++)
2166 printk(" %04x[%04x]", local->txfid[idx],
2167 local->intransmitfid[idx]);
2169 spin_unlock(&local->txfidlock);
2171 /* FIX: should probably schedule reset; reference to one txfid was lost
2172 * completely.. Bad things will happen if we run out of txfids
2173 * Actually, this will cause netdev watchdog to notice TX timeout and
2174 * then card reset after all txfids have been leaked. */
2178 /* Called only as a tasklet (software IRQ) */
2179 static void hostap_tx_callback(local_info_t *local,
2180 struct hfa384x_tx_frame *txdesc, int ok,
2183 u16 sw_support, hdrlen, len;
2184 struct sk_buff *skb;
2185 struct hostap_tx_callback_info *cb;
2187 /* Make sure that frame was from us. */
2188 if (memcmp(txdesc->addr2, local->dev->dev_addr, ETH_ALEN)) {
2189 printk(KERN_DEBUG "%s: TX callback - foreign frame\n",
2194 sw_support = le16_to_cpu(txdesc->sw_support);
2196 spin_lock(&local->lock);
2197 cb = local->tx_callback;
2198 while (cb != NULL && cb->idx != sw_support)
2200 spin_unlock(&local->lock);
2203 printk(KERN_DEBUG "%s: could not find TX callback (idx %d)\n",
2204 local->dev->name, sw_support);
2208 hdrlen = hostap_80211_get_hdrlen(le16_to_cpu(txdesc->frame_control));
2209 len = le16_to_cpu(txdesc->data_len);
2210 skb = dev_alloc_skb(hdrlen + len);
2212 printk(KERN_DEBUG "%s: hostap_tx_callback failed to allocate "
2213 "skb\n", local->dev->name);
2217 memcpy(skb_put(skb, hdrlen), (void *) &txdesc->frame_control, hdrlen);
2219 memcpy(skb_put(skb, len), payload, len);
2221 skb->dev = local->dev;
2222 skb->mac.raw = skb->data;
2224 cb->func(skb, ok, cb->data);
2228 /* Called only as a tasklet (software IRQ) */
2229 static int hostap_tx_compl_read(local_info_t *local, int error,
2230 struct hfa384x_tx_frame *txdesc,
2235 struct net_device *dev = local->dev;
2237 fid = prism2_read_fid_reg(dev, HFA384X_TXCOMPLFID_OFF);
2239 PDEBUG(DEBUG_FID, "interrupt: TX (err=%d) - fid=0x%04x\n", fid, error);
2241 spin_lock(&local->baplock);
2242 res = hfa384x_setup_bap(dev, BAP0, fid, 0);
2244 res = hfa384x_from_bap(dev, BAP0, txdesc, sizeof(*txdesc));
2246 PDEBUG(DEBUG_EXTRA, "%s: TX (err=%d) - fid=0x%04x - could not "
2247 "read txdesc\n", dev->name, error, fid);
2248 if (res == -ETIMEDOUT) {
2249 schedule_work(&local->reset_queue);
2254 if (txdesc->sw_support) {
2255 len = le16_to_cpu(txdesc->data_len);
2256 if (len < PRISM2_DATA_MAXLEN) {
2257 *payload = (char *) kmalloc(len, GFP_ATOMIC);
2258 if (*payload == NULL ||
2259 hfa384x_from_bap(dev, BAP0, *payload, len)) {
2260 PDEBUG(DEBUG_EXTRA, "%s: could not read TX "
2261 "frame payload\n", dev->name);
2271 spin_unlock(&local->baplock);
2277 /* Called only as a tasklet (software IRQ) */
2278 static void prism2_tx_ev(local_info_t *local)
2280 struct net_device *dev = local->dev;
2281 char *payload = NULL;
2282 struct hfa384x_tx_frame txdesc;
2284 if (hostap_tx_compl_read(local, 0, &txdesc, &payload))
2287 if (local->frame_dump & PRISM2_DUMP_TX_HDR) {
2288 PDEBUG(DEBUG_EXTRA, "%s: TX - status=0x%04x "
2289 "retry_count=%d tx_rate=%d seq_ctrl=%d "
2291 dev->name, le16_to_cpu(txdesc.status),
2292 txdesc.retry_count, txdesc.tx_rate,
2293 le16_to_cpu(txdesc.seq_ctrl),
2294 le16_to_cpu(txdesc.duration_id));
2297 if (txdesc.sw_support)
2298 hostap_tx_callback(local, &txdesc, 1, payload);
2302 HFA384X_OUTW(HFA384X_EV_TX, HFA384X_EVACK_OFF);
2306 /* Called only as a tasklet (software IRQ) */
2307 static void hostap_sta_tx_exc_tasklet(unsigned long data)
2309 local_info_t *local = (local_info_t *) data;
2310 struct sk_buff *skb;
2312 while ((skb = skb_dequeue(&local->sta_tx_exc_list)) != NULL) {
2313 struct hfa384x_tx_frame *txdesc =
2314 (struct hfa384x_tx_frame *) skb->data;
2316 if (skb->len >= sizeof(*txdesc)) {
2317 /* Convert Prism2 RX structure into IEEE 802.11 header
2319 u16 fc = le16_to_cpu(txdesc->frame_control);
2320 int hdrlen = hostap_80211_get_hdrlen(fc);
2321 memmove(skb_pull(skb, sizeof(*txdesc) - hdrlen),
2322 &txdesc->frame_control, hdrlen);
2324 hostap_handle_sta_tx_exc(local, skb);
2331 /* Called only as a tasklet (software IRQ) */
2332 static void prism2_txexc(local_info_t *local)
2334 struct net_device *dev = local->dev;
2337 char *payload = NULL;
2338 struct hfa384x_tx_frame txdesc;
2340 show_dump = local->frame_dump & PRISM2_DUMP_TXEXC_HDR;
2341 local->stats.tx_errors++;
2343 res = hostap_tx_compl_read(local, 1, &txdesc, &payload);
2344 HFA384X_OUTW(HFA384X_EV_TXEXC, HFA384X_EVACK_OFF);
2348 status = le16_to_cpu(txdesc.status);
2350 /* We produce a TXDROP event only for retry or lifetime
2351 * exceeded, because that's the only status that really mean
2352 * that this particular node went away.
2353 * Other errors means that *we* screwed up. - Jean II */
2354 if (status & (HFA384X_TX_STATUS_RETRYERR | HFA384X_TX_STATUS_AGEDERR))
2356 union iwreq_data wrqu;
2358 /* Copy 802.11 dest address. */
2359 memcpy(wrqu.addr.sa_data, txdesc.addr1, ETH_ALEN);
2360 wrqu.addr.sa_family = ARPHRD_ETHER;
2361 wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL);
2365 if (local->iw_mode == IW_MODE_MASTER ||
2366 local->iw_mode == IW_MODE_REPEAT ||
2367 local->wds_type & HOSTAP_WDS_AP_CLIENT) {
2368 struct sk_buff *skb;
2369 skb = dev_alloc_skb(sizeof(txdesc));
2371 memcpy(skb_put(skb, sizeof(txdesc)), &txdesc,
2373 skb_queue_tail(&local->sta_tx_exc_list, skb);
2374 tasklet_schedule(&local->sta_tx_exc_tasklet);
2378 if (txdesc.sw_support)
2379 hostap_tx_callback(local, &txdesc, 0, payload);
2385 PDEBUG(DEBUG_EXTRA, "%s: TXEXC - status=0x%04x (%s%s%s%s)"
2386 " tx_control=%04x\n",
2388 status & HFA384X_TX_STATUS_RETRYERR ? "[RetryErr]" : "",
2389 status & HFA384X_TX_STATUS_AGEDERR ? "[AgedErr]" : "",
2390 status & HFA384X_TX_STATUS_DISCON ? "[Discon]" : "",
2391 status & HFA384X_TX_STATUS_FORMERR ? "[FormErr]" : "",
2392 le16_to_cpu(txdesc.tx_control));
2394 fc = le16_to_cpu(txdesc.frame_control);
2395 PDEBUG(DEBUG_EXTRA, " retry_count=%d tx_rate=%d fc=0x%04x "
2396 "(%s%s%s::%d%s%s)\n",
2397 txdesc.retry_count, txdesc.tx_rate, fc,
2398 WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_MGMT ? "Mgmt" : "",
2399 WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_CTL ? "Ctrl" : "",
2400 WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA ? "Data" : "",
2401 WLAN_FC_GET_STYPE(fc) >> 4,
2402 fc & WLAN_FC_TODS ? " ToDS" : "",
2403 fc & WLAN_FC_FROMDS ? " FromDS" : "");
2404 PDEBUG(DEBUG_EXTRA, " A1=" MACSTR " A2=" MACSTR " A3="
2405 MACSTR " A4=" MACSTR "\n",
2406 MAC2STR(txdesc.addr1), MAC2STR(txdesc.addr2),
2407 MAC2STR(txdesc.addr3), MAC2STR(txdesc.addr4));
2411 /* Called only as a tasklet (software IRQ) */
2412 static void hostap_info_tasklet(unsigned long data)
2414 local_info_t *local = (local_info_t *) data;
2415 struct sk_buff *skb;
2417 while ((skb = skb_dequeue(&local->info_list)) != NULL) {
2418 hostap_info_process(local, skb);
2424 /* Called only as a tasklet (software IRQ) */
2425 static void prism2_info(local_info_t *local)
2427 struct net_device *dev = local->dev;
2430 struct hfa384x_info_frame info;
2431 struct sk_buff *skb;
2433 fid = HFA384X_INW(HFA384X_INFOFID_OFF);
2435 spin_lock(&local->baplock);
2436 res = hfa384x_setup_bap(dev, BAP0, fid, 0);
2438 res = hfa384x_from_bap(dev, BAP0, &info, sizeof(info));
2440 spin_unlock(&local->baplock);
2441 printk(KERN_DEBUG "Could not get info frame (fid=0x%04x)\n",
2443 if (res == -ETIMEDOUT) {
2444 schedule_work(&local->reset_queue);
2449 le16_to_cpus(&info.len);
2450 le16_to_cpus(&info.type);
2451 left = (info.len - 1) * 2;
2453 if (info.len & 0x8000 || info.len == 0 || left > 2060) {
2454 /* data register seems to give 0x8000 in some error cases even
2455 * though busy bit is not set in offset register;
2456 * in addition, length must be at least 1 due to type field */
2457 spin_unlock(&local->baplock);
2458 printk(KERN_DEBUG "%s: Received info frame with invalid "
2459 "length 0x%04x (type 0x%04x)\n", dev->name, info.len,
2464 skb = dev_alloc_skb(sizeof(info) + left);
2466 spin_unlock(&local->baplock);
2467 printk(KERN_DEBUG "%s: Could not allocate skb for info "
2468 "frame\n", dev->name);
2472 memcpy(skb_put(skb, sizeof(info)), &info, sizeof(info));
2473 if (left > 0 && hfa384x_from_bap(dev, BAP0, skb_put(skb, left), left))
2475 spin_unlock(&local->baplock);
2476 printk(KERN_WARNING "%s: Info frame read failed (fid=0x%04x, "
2477 "len=0x%04x, type=0x%04x\n",
2478 dev->name, fid, info.len, info.type);
2482 spin_unlock(&local->baplock);
2484 skb_queue_tail(&local->info_list, skb);
2485 tasklet_schedule(&local->info_tasklet);
2488 HFA384X_OUTW(HFA384X_EV_INFO, HFA384X_EVACK_OFF);
2492 /* Called only as a tasklet (software IRQ) */
2493 static void hostap_bap_tasklet(unsigned long data)
2495 local_info_t *local = (local_info_t *) data;
2496 struct net_device *dev = local->dev;
2500 if (local->func->card_present && !local->func->card_present(local))
2503 set_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits);
2505 /* Process all pending BAP events without generating new interrupts
2507 while (frames-- > 0) {
2508 ev = HFA384X_INW(HFA384X_EVSTAT_OFF);
2509 if (ev == 0xffff || !(ev & HFA384X_BAP0_EVENTS))
2511 if (ev & HFA384X_EV_RX)
2513 if (ev & HFA384X_EV_INFO)
2515 if (ev & HFA384X_EV_TX)
2516 prism2_tx_ev(local);
2517 if (ev & HFA384X_EV_TXEXC)
2518 prism2_txexc(local);
2521 set_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits);
2522 clear_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits);
2524 /* Enable interrupts for new BAP events */
2525 hfa384x_events_all(dev);
2526 clear_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits);
2530 /* Called only from hardware IRQ */
2531 static void prism2_infdrop(struct net_device *dev)
2533 static unsigned long last_inquire = 0;
2535 PDEBUG(DEBUG_EXTRA, "%s: INFDROP event\n", dev->name);
2537 /* some firmware versions seem to get stuck with
2538 * full CommTallies in high traffic load cases; every
2539 * packet will then cause INFDROP event and CommTallies
2540 * info frame will not be sent automatically. Try to
2541 * get out of this state by inquiring CommTallies. */
2542 if (!last_inquire || time_after(jiffies, last_inquire + HZ)) {
2543 hfa384x_cmd_callback(dev, HFA384X_CMDCODE_INQUIRE,
2544 HFA384X_INFO_COMMTALLIES, NULL, 0);
2545 last_inquire = jiffies;
2550 /* Called only from hardware IRQ */
2551 static void prism2_ev_tick(struct net_device *dev)
2553 struct hostap_interface *iface;
2554 local_info_t *local;
2556 static int prev_stuck = 0;
2558 iface = netdev_priv(dev);
2559 local = iface->local;
2561 if (time_after(jiffies, local->last_tick_timer + 5 * HZ) &&
2562 local->last_tick_timer) {
2563 evstat = HFA384X_INW(HFA384X_EVSTAT_OFF);
2564 inten = HFA384X_INW(HFA384X_INTEN_OFF);
2566 printk(KERN_INFO "%s: SW TICK stuck? "
2567 "bits=0x%lx EvStat=%04x IntEn=%04x\n",
2568 dev->name, local->bits, evstat, inten);
2570 local->sw_tick_stuck++;
2571 if ((evstat & HFA384X_BAP0_EVENTS) &&
2572 (inten & HFA384X_BAP0_EVENTS)) {
2573 printk(KERN_INFO "%s: trying to recover from IRQ "
2574 "hang\n", dev->name);
2575 hfa384x_events_no_bap0(dev);
2583 /* Called only from hardware IRQ */
2584 static inline void prism2_check_magic(local_info_t *local)
2586 /* at least PCI Prism2.5 with bus mastering seems to sometimes
2587 * return 0x0000 in SWSUPPORT0 for unknown reason, but re-reading the
2588 * register once or twice seems to get the correct value.. PCI cards
2589 * cannot anyway be removed during normal operation, so there is not
2590 * really any need for this verification with them. */
2593 #ifndef final_version
2594 static unsigned long last_magic_err = 0;
2595 struct net_device *dev = local->dev;
2597 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) {
2598 if (!local->hw_ready)
2600 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
2601 if (time_after(jiffies, last_magic_err + 10 * HZ)) {
2602 printk("%s: Interrupt, but SWSUPPORT0 does not match: "
2603 "%04X != %04X - card removed?\n", dev->name,
2604 HFA384X_INW(HFA384X_SWSUPPORT0_OFF),
2606 last_magic_err = jiffies;
2607 } else if (net_ratelimit()) {
2608 printk(KERN_DEBUG "%s: interrupt - SWSUPPORT0=%04x "
2609 "MAGIC=%04x\n", dev->name,
2610 HFA384X_INW(HFA384X_SWSUPPORT0_OFF),
2613 if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != 0xffff)
2614 schedule_work(&local->reset_queue);
2617 #endif /* final_version */
2618 #endif /* !PRISM2_PCI */
2622 /* Called only from hardware IRQ */
2623 static irqreturn_t prism2_interrupt(int irq, void *dev_id, struct pt_regs *regs)
2625 struct net_device *dev = (struct net_device *) dev_id;
2626 struct hostap_interface *iface;
2627 local_info_t *local;
2631 iface = netdev_priv(dev);
2632 local = iface->local;
2634 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 0);
2636 if (local->func->card_present && !local->func->card_present(local)) {
2637 if (net_ratelimit()) {
2638 printk(KERN_DEBUG "%s: Interrupt, but dev not OK\n",
2644 prism2_check_magic(local);
2647 ev = HFA384X_INW(HFA384X_EVSTAT_OFF);
2649 if (local->shutdown)
2651 HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
2652 printk(KERN_DEBUG "%s: prism2_interrupt: ev=0xffff\n",
2657 ev &= HFA384X_INW(HFA384X_INTEN_OFF);
2661 if (ev & HFA384X_EV_CMD) {
2665 /* Above events are needed even before hw is ready, but other
2666 * events should be skipped during initialization. This may
2667 * change for AllocEv if allocate_fid is implemented without
2669 if (!local->hw_ready || local->hw_resetting ||
2670 !local->dev_enabled) {
2671 ev = HFA384X_INW(HFA384X_EVSTAT_OFF);
2672 if (ev & HFA384X_EV_CMD)
2674 if ((ev & HFA384X_EVENT_MASK) == 0)
2676 if (local->dev_enabled && (ev & ~HFA384X_EV_TICK) &&
2678 printk(KERN_DEBUG "%s: prism2_interrupt: hw "
2679 "not ready; skipping events 0x%04x "
2680 "(IntEn=0x%04x)%s%s%s\n",
2682 HFA384X_INW(HFA384X_INTEN_OFF),
2683 !local->hw_ready ? " (!hw_ready)" : "",
2684 local->hw_resetting ?
2685 " (hw_resetting)" : "",
2686 !local->dev_enabled ?
2687 " (!dev_enabled)" : "");
2689 HFA384X_OUTW(ev, HFA384X_EVACK_OFF);
2693 if (ev & HFA384X_EV_TICK) {
2694 prism2_ev_tick(dev);
2695 HFA384X_OUTW(HFA384X_EV_TICK, HFA384X_EVACK_OFF);
2698 if (ev & HFA384X_EV_ALLOC) {
2699 prism2_alloc_ev(dev);
2700 HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF);
2703 /* Reading data from the card is quite time consuming, so do it
2704 * in tasklets. TX, TXEXC, RX, and INFO events will be ACKed
2705 * and unmasked after needed data has been read completely. */
2706 if (ev & HFA384X_BAP0_EVENTS) {
2707 hfa384x_events_no_bap0(dev);
2708 tasklet_schedule(&local->bap_tasklet);
2711 #ifndef final_version
2712 if (ev & HFA384X_EV_WTERR) {
2713 PDEBUG(DEBUG_EXTRA, "%s: WTERR event\n", dev->name);
2714 HFA384X_OUTW(HFA384X_EV_WTERR, HFA384X_EVACK_OFF);
2716 #endif /* final_version */
2718 if (ev & HFA384X_EV_INFDROP) {
2719 prism2_infdrop(dev);
2720 HFA384X_OUTW(HFA384X_EV_INFDROP, HFA384X_EVACK_OFF);
2725 if (events >= PRISM2_MAX_INTERRUPT_EVENTS) {
2726 PDEBUG(DEBUG_EXTRA, "prism2_interrupt: >%d events "
2727 "(EvStat=0x%04x)\n",
2728 PRISM2_MAX_INTERRUPT_EVENTS,
2729 HFA384X_INW(HFA384X_EVSTAT_OFF));
2733 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 1);
2734 return IRQ_RETVAL(events);
2738 static void prism2_check_sta_fw_version(local_info_t *local)
2740 struct hfa384x_comp_ident comp;
2741 int id, variant, major, minor;
2743 if (hfa384x_get_rid(local->dev, HFA384X_RID_STAID,
2744 &comp, sizeof(comp), 1) < 0)
2748 id = le16_to_cpu(comp.id);
2749 if (id != HFA384X_COMP_ID_STA) {
2750 if (id == HFA384X_COMP_ID_FW_AP)
2755 major = __le16_to_cpu(comp.major);
2756 minor = __le16_to_cpu(comp.minor);
2757 variant = __le16_to_cpu(comp.variant);
2758 local->sta_fw_ver = PRISM2_FW_VER(major, minor, variant);
2760 /* Station firmware versions before 1.4.x seem to have a bug in
2761 * firmware-based WEP encryption when using Host AP mode, so use
2762 * host_encrypt as a default for them. Firmware version 1.4.9 is the
2763 * first one that has been seen to produce correct encryption, but the
2764 * bug might be fixed before that (although, at least 1.4.2 is broken).
2766 local->fw_encrypt_ok = local->sta_fw_ver >= PRISM2_FW_VER(1,4,9);
2768 if (local->iw_mode == IW_MODE_MASTER && !local->host_encrypt &&
2769 !local->fw_encrypt_ok) {
2770 printk(KERN_DEBUG "%s: defaulting to host-based encryption as "
2771 "a workaround for firmware bug in Host AP mode WEP\n",
2773 local->host_encrypt = 1;
2776 /* IEEE 802.11 standard compliant WDS frames (4 addresses) were broken
2777 * in station firmware versions before 1.5.x. With these versions, the
2778 * driver uses a workaround with bogus frame format (4th address after
2779 * the payload). This is not compatible with other AP devices. Since
2780 * the firmware bug is fixed in the latest station firmware versions,
2781 * automatically enable standard compliant mode for cards using station
2782 * firmware version 1.5.0 or newer. */
2783 if (local->sta_fw_ver >= PRISM2_FW_VER(1,5,0))
2784 local->wds_type |= HOSTAP_WDS_STANDARD_FRAME;
2786 printk(KERN_DEBUG "%s: defaulting to bogus WDS frame as a "
2787 "workaround for firmware bug in Host AP mode WDS\n",
2791 hostap_check_sta_fw_version(local->ap, local->sta_fw_ver);
2795 static void prism2_crypt_deinit_entries(local_info_t *local, int force)
2797 struct list_head *ptr, *n;
2798 struct ieee80211_crypt_data *entry;
2800 for (ptr = local->crypt_deinit_list.next, n = ptr->next;
2801 ptr != &local->crypt_deinit_list; ptr = n, n = ptr->next) {
2802 entry = list_entry(ptr, struct ieee80211_crypt_data, list);
2804 if (atomic_read(&entry->refcnt) != 0 && !force)
2810 entry->ops->deinit(entry->priv);
2816 static void prism2_crypt_deinit_handler(unsigned long data)
2818 local_info_t *local = (local_info_t *) data;
2819 unsigned long flags;
2821 spin_lock_irqsave(&local->lock, flags);
2822 prism2_crypt_deinit_entries(local, 0);
2823 if (!list_empty(&local->crypt_deinit_list)) {
2824 printk(KERN_DEBUG "%s: entries remaining in delayed crypt "
2825 "deletion list\n", local->dev->name);
2826 local->crypt_deinit_timer.expires = jiffies + HZ;
2827 add_timer(&local->crypt_deinit_timer);
2829 spin_unlock_irqrestore(&local->lock, flags);
2834 static void hostap_passive_scan(unsigned long data)
2836 local_info_t *local = (local_info_t *) data;
2837 struct net_device *dev = local->dev;
2840 if (local->passive_scan_interval <= 0)
2843 if (local->passive_scan_state == PASSIVE_SCAN_LISTEN) {
2846 /* Even though host system does not really know when the WLAN
2847 * MAC is sending frames, try to avoid changing channels for
2848 * passive scanning when a host-generated frame is being
2850 if (test_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
2851 printk(KERN_DEBUG "%s: passive scan detected pending "
2852 "TX - delaying\n", dev->name);
2853 local->passive_scan_timer.expires = jiffies + HZ / 10;
2854 add_timer(&local->passive_scan_timer);
2859 local->passive_scan_channel++;
2860 if (local->passive_scan_channel > 14)
2861 local->passive_scan_channel = 1;
2863 } while (!(local->channel_mask &
2864 (1 << (local->passive_scan_channel - 1))) &&
2867 if (max_tries == 0) {
2868 printk(KERN_INFO "%s: no allowed passive scan channels"
2869 " found\n", dev->name);
2873 printk(KERN_DEBUG "%s: passive scan channel %d\n",
2874 dev->name, local->passive_scan_channel);
2875 channel = local->passive_scan_channel;
2876 local->passive_scan_state = PASSIVE_SCAN_WAIT;
2877 local->passive_scan_timer.expires = jiffies + HZ / 10;
2879 channel = local->channel;
2880 local->passive_scan_state = PASSIVE_SCAN_LISTEN;
2881 local->passive_scan_timer.expires = jiffies +
2882 local->passive_scan_interval * HZ;
2885 if (hfa384x_cmd_callback(dev, HFA384X_CMDCODE_TEST |
2886 (HFA384X_TEST_CHANGE_CHANNEL << 8),
2888 printk(KERN_ERR "%s: passive scan channel set %d "
2889 "failed\n", dev->name, channel);
2891 add_timer(&local->passive_scan_timer);
2895 /* Called only as a scheduled task when communications quality values should
2897 static void handle_comms_qual_update(void *data)
2899 local_info_t *local = data;
2900 prism2_update_comms_qual(local->dev);
2904 /* Software watchdog - called as a timer. Hardware interrupt (Tick event) is
2905 * used to monitor that local->last_tick_timer is being updated. If not,
2906 * interrupt busy-loop is assumed and driver tries to recover by masking out
2908 static void hostap_tick_timer(unsigned long data)
2910 static unsigned long last_inquire = 0;
2911 local_info_t *local = (local_info_t *) data;
2912 local->last_tick_timer = jiffies;
2914 /* Inquire CommTallies every 10 seconds to keep the statistics updated
2915 * more often during low load and when using 32-bit tallies. */
2916 if ((!last_inquire || time_after(jiffies, last_inquire + 10 * HZ)) &&
2917 !local->hw_downloading && local->hw_ready &&
2918 !local->hw_resetting && local->dev_enabled) {
2919 hfa384x_cmd_callback(local->dev, HFA384X_CMDCODE_INQUIRE,
2920 HFA384X_INFO_COMMTALLIES, NULL, 0);
2921 last_inquire = jiffies;
2924 if ((local->last_comms_qual_update == 0 ||
2925 time_after(jiffies, local->last_comms_qual_update + 10 * HZ)) &&
2926 (local->iw_mode == IW_MODE_INFRA ||
2927 local->iw_mode == IW_MODE_ADHOC)) {
2928 schedule_work(&local->comms_qual_update);
2931 local->tick_timer.expires = jiffies + 2 * HZ;
2932 add_timer(&local->tick_timer);
2936 #ifndef PRISM2_NO_PROCFS_DEBUG
2937 static int prism2_registers_proc_read(char *page, char **start, off_t off,
2938 int count, int *eof, void *data)
2941 local_info_t *local = (local_info_t *) data;
2948 #define SHOW_REG(n) \
2949 p += sprintf(p, #n "=%04x\n", hfa384x_read_reg(local->dev, HFA384X_##n##_OFF))
2967 SHOW_REG(TXCOMPLFID);
2968 SHOW_REG(SWSUPPORT0);
2969 SHOW_REG(SWSUPPORT1);
2970 SHOW_REG(SWSUPPORT2);
2974 /* Do not read data registers, because they change the state of the
2975 * MAC (offset += 2) */
2976 /* SHOW_REG(DATA0); */
2977 /* SHOW_REG(DATA1); */
2979 SHOW_REG(AUXOFFSET);
2980 /* SHOW_REG(AUXDATA); */
2984 SHOW_REG(PCI_M0_ADDRH);
2985 SHOW_REG(PCI_M0_ADDRL);
2986 SHOW_REG(PCI_M0_LEN);
2987 SHOW_REG(PCI_M0_CTL);
2988 SHOW_REG(PCI_STATUS);
2989 SHOW_REG(PCI_M1_ADDRH);
2990 SHOW_REG(PCI_M1_ADDRL);
2991 SHOW_REG(PCI_M1_LEN);
2992 SHOW_REG(PCI_M1_CTL);
2993 #endif /* PRISM2_PCI */
2997 #endif /* PRISM2_NO_PROCFS_DEBUG */
3000 struct set_tim_data {
3001 struct list_head list;
3006 static int prism2_set_tim(struct net_device *dev, int aid, int set)
3008 struct list_head *ptr;
3009 struct set_tim_data *new_entry;
3010 struct hostap_interface *iface;
3011 local_info_t *local;
3013 iface = netdev_priv(dev);
3014 local = iface->local;
3016 new_entry = (struct set_tim_data *)
3017 kmalloc(sizeof(*new_entry), GFP_ATOMIC);
3018 if (new_entry == NULL) {
3019 printk(KERN_DEBUG "%s: prism2_set_tim: kmalloc failed\n",
3023 memset(new_entry, 0, sizeof(*new_entry));
3024 new_entry->aid = aid;
3025 new_entry->set = set;
3027 spin_lock_bh(&local->set_tim_lock);
3028 list_for_each(ptr, &local->set_tim_list) {
3029 struct set_tim_data *entry =
3030 list_entry(ptr, struct set_tim_data, list);
3031 if (entry->aid == aid) {
3032 PDEBUG(DEBUG_PS2, "%s: prism2_set_tim: aid=%d "
3034 local->dev->name, aid, entry->set, set);
3042 list_add_tail(&new_entry->list, &local->set_tim_list);
3043 spin_unlock_bh(&local->set_tim_lock);
3045 schedule_work(&local->set_tim_queue);
3051 static void handle_set_tim_queue(void *data)
3053 local_info_t *local = (local_info_t *) data;
3054 struct set_tim_data *entry;
3059 spin_lock_bh(&local->set_tim_lock);
3060 if (!list_empty(&local->set_tim_list)) {
3061 entry = list_entry(local->set_tim_list.next,
3062 struct set_tim_data, list);
3063 list_del(&entry->list);
3065 spin_unlock_bh(&local->set_tim_lock);
3069 PDEBUG(DEBUG_PS2, "%s: handle_set_tim_queue: aid=%d set=%d\n",
3070 local->dev->name, entry->aid, entry->set);
3075 if (hostap_set_word(local->dev, HFA384X_RID_CNFTIMCTRL, val)) {
3076 printk(KERN_DEBUG "%s: set_tim failed (aid=%d "
3078 local->dev->name, entry->aid, entry->set);
3086 static void prism2_clear_set_tim_queue(local_info_t *local)
3088 struct list_head *ptr, *n;
3090 list_for_each_safe(ptr, n, &local->set_tim_list) {
3091 struct set_tim_data *entry;
3092 entry = list_entry(ptr, struct set_tim_data, list);
3093 list_del(&entry->list);
3099 static struct net_device *
3100 prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx,
3101 struct device *sdev)
3103 struct net_device *dev;
3104 struct hostap_interface *iface;
3105 struct local_info *local;
3111 len = strlen(dev_template);
3112 if (len >= IFNAMSIZ || strstr(dev_template, "%d") == NULL) {
3113 printk(KERN_WARNING "hostap: Invalid dev_template='%s'\n",
3118 len = sizeof(struct hostap_interface) +
3119 3 + sizeof(struct local_info) +
3120 3 + sizeof(struct ap_data);
3122 dev = alloc_etherdev(len);
3126 iface = netdev_priv(dev);
3127 local = (struct local_info *) ((((long) (iface + 1)) + 3) & ~3);
3128 local->ap = (struct ap_data *) ((((long) (local + 1)) + 3) & ~3);
3129 local->dev = iface->dev = dev;
3130 iface->local = local;
3131 iface->type = HOSTAP_INTERFACE_MASTER;
3132 INIT_LIST_HEAD(&local->hostap_interfaces);
3134 local->hw_module = THIS_MODULE;
3136 #ifdef PRISM2_IO_DEBUG
3137 local->io_debug_enabled = 1;
3138 #endif /* PRISM2_IO_DEBUG */
3140 local->func = funcs;
3141 local->func->cmd = hfa384x_cmd;
3142 local->func->read_regs = hfa384x_read_regs;
3143 local->func->get_rid = hfa384x_get_rid;
3144 local->func->set_rid = hfa384x_set_rid;
3145 local->func->hw_enable = prism2_hw_enable;
3146 local->func->hw_config = prism2_hw_config;
3147 local->func->hw_reset = prism2_hw_reset;
3148 local->func->hw_shutdown = prism2_hw_shutdown;
3149 local->func->reset_port = prism2_reset_port;
3150 local->func->schedule_reset = prism2_schedule_reset;
3151 #ifdef PRISM2_DOWNLOAD_SUPPORT
3152 local->func->read_aux = prism2_download_aux_dump;
3153 local->func->download = prism2_download;
3154 #endif /* PRISM2_DOWNLOAD_SUPPORT */
3155 local->func->tx = prism2_tx_80211;
3156 local->func->set_tim = prism2_set_tim;
3157 local->func->need_tx_headroom = 0; /* no need to add txdesc in
3158 * skb->data (FIX: maybe for DMA bus
3163 rwlock_init(&local->iface_lock);
3164 spin_lock_init(&local->txfidlock);
3165 spin_lock_init(&local->cmdlock);
3166 spin_lock_init(&local->baplock);
3167 spin_lock_init(&local->lock);
3168 init_MUTEX(&local->rid_bap_sem);
3170 if (card_idx < 0 || card_idx >= MAX_PARM_DEVICES)
3172 local->card_idx = card_idx;
3174 len = strlen(essid);
3175 memcpy(local->essid, essid,
3176 len > MAX_SSID_LEN ? MAX_SSID_LEN : len);
3177 local->essid[MAX_SSID_LEN] = '\0';
3178 i = GET_INT_PARM(iw_mode, card_idx);
3179 if ((i >= IW_MODE_ADHOC && i <= IW_MODE_REPEAT) ||
3180 i == IW_MODE_MONITOR) {
3183 printk(KERN_WARNING "prism2: Unknown iw_mode %d; using "
3184 "IW_MODE_MASTER\n", i);
3185 local->iw_mode = IW_MODE_MASTER;
3187 local->channel = GET_INT_PARM(channel, card_idx);
3188 local->beacon_int = GET_INT_PARM(beacon_int, card_idx);
3189 local->dtim_period = GET_INT_PARM(dtim_period, card_idx);
3190 local->wds_max_connections = 16;
3191 local->tx_control = HFA384X_TX_CTRL_FLAGS;
3192 local->manual_retry_count = -1;
3193 local->rts_threshold = 2347;
3194 local->fragm_threshold = 2346;
3195 local->rssi_to_dBm = 100; /* default; to be overriden by
3196 * cnfDbmAdjust, if available */
3197 local->auth_algs = PRISM2_AUTH_OPEN | PRISM2_AUTH_SHARED_KEY;
3198 local->sram_type = -1;
3199 local->scan_channel_mask = 0xffff;
3201 /* Initialize task queue structures */
3202 INIT_WORK(&local->reset_queue, handle_reset_queue, local);
3203 INIT_WORK(&local->set_multicast_list_queue,
3204 hostap_set_multicast_list_queue, local->dev);
3206 INIT_WORK(&local->set_tim_queue, handle_set_tim_queue, local);
3207 INIT_LIST_HEAD(&local->set_tim_list);
3208 spin_lock_init(&local->set_tim_lock);
3210 INIT_WORK(&local->comms_qual_update, handle_comms_qual_update, local);
3212 /* Initialize tasklets for handling hardware IRQ related operations
3213 * outside hw IRQ handler */
3214 #define HOSTAP_TASKLET_INIT(q, f, d) \
3215 do { memset((q), 0, sizeof(*(q))); (q)->func = (f); (q)->data = (d); } \
3217 HOSTAP_TASKLET_INIT(&local->bap_tasklet, hostap_bap_tasklet,
3218 (unsigned long) local);
3220 HOSTAP_TASKLET_INIT(&local->info_tasklet, hostap_info_tasklet,
3221 (unsigned long) local);
3222 hostap_info_init(local);
3224 HOSTAP_TASKLET_INIT(&local->rx_tasklet,
3225 hostap_rx_tasklet, (unsigned long) local);
3226 skb_queue_head_init(&local->rx_list);
3228 HOSTAP_TASKLET_INIT(&local->sta_tx_exc_tasklet,
3229 hostap_sta_tx_exc_tasklet, (unsigned long) local);
3230 skb_queue_head_init(&local->sta_tx_exc_list);
3232 INIT_LIST_HEAD(&local->cmd_queue);
3233 init_waitqueue_head(&local->hostscan_wq);
3234 INIT_LIST_HEAD(&local->crypt_deinit_list);
3235 init_timer(&local->crypt_deinit_timer);
3236 local->crypt_deinit_timer.data = (unsigned long) local;
3237 local->crypt_deinit_timer.function = prism2_crypt_deinit_handler;
3239 init_timer(&local->passive_scan_timer);
3240 local->passive_scan_timer.data = (unsigned long) local;
3241 local->passive_scan_timer.function = hostap_passive_scan;
3243 init_timer(&local->tick_timer);
3244 local->tick_timer.data = (unsigned long) local;
3245 local->tick_timer.function = hostap_tick_timer;
3246 local->tick_timer.expires = jiffies + 2 * HZ;
3247 add_timer(&local->tick_timer);
3249 INIT_LIST_HEAD(&local->bss_list);
3251 hostap_setup_dev(dev, local, 1);
3252 local->saved_eth_header_parse = dev->hard_header_parse;
3254 dev->hard_start_xmit = hostap_master_start_xmit;
3255 dev->type = ARPHRD_IEEE80211;
3256 dev->hard_header_parse = hostap_80211_header_parse;
3259 ret = dev_alloc_name(dev, "wifi%d");
3260 SET_NETDEV_DEV(dev, sdev);
3262 ret = register_netdevice(dev);
3265 printk(KERN_WARNING "%s: register netdevice failed!\n",
3269 printk(KERN_INFO "%s: Registered netdevice %s\n", dev_info, dev->name);
3271 #ifndef PRISM2_NO_PROCFS_DEBUG
3272 create_proc_read_entry("registers", 0, local->proc,
3273 prism2_registers_proc_read, local);
3274 #endif /* PRISM2_NO_PROCFS_DEBUG */
3276 hostap_init_data(local);
3285 static int hostap_hw_ready(struct net_device *dev)
3287 struct hostap_interface *iface;
3288 struct local_info *local;
3290 iface = netdev_priv(dev);
3291 local = iface->local;
3292 local->ddev = hostap_add_interface(local, HOSTAP_INTERFACE_MAIN, 0,
3296 if (local->iw_mode == IW_MODE_INFRA ||
3297 local->iw_mode == IW_MODE_ADHOC) {
3298 netif_carrier_off(local->dev);
3299 netif_carrier_off(local->ddev);
3301 hostap_init_proc(local);
3302 hostap_init_ap_proc(local);
3310 static void prism2_free_local_data(struct net_device *dev)
3312 struct hostap_tx_callback_info *tx_cb, *tx_cb_prev;
3314 struct hostap_interface *iface;
3315 struct local_info *local;
3316 struct list_head *ptr, *n;
3321 iface = netdev_priv(dev);
3322 local = iface->local;
3324 flush_scheduled_work();
3326 if (timer_pending(&local->crypt_deinit_timer))
3327 del_timer(&local->crypt_deinit_timer);
3328 prism2_crypt_deinit_entries(local, 1);
3330 if (timer_pending(&local->passive_scan_timer))
3331 del_timer(&local->passive_scan_timer);
3333 if (timer_pending(&local->tick_timer))
3334 del_timer(&local->tick_timer);
3336 prism2_clear_cmd_queue(local);
3338 skb_queue_purge(&local->info_list);
3339 skb_queue_purge(&local->rx_list);
3340 skb_queue_purge(&local->sta_tx_exc_list);
3342 if (local->dev_enabled)
3343 prism2_callback(local, PRISM2_CALLBACK_DISABLE);
3345 for (i = 0; i < WEP_KEYS; i++) {
3346 struct ieee80211_crypt_data *crypt = local->crypt[i];
3349 crypt->ops->deinit(crypt->priv);
3351 local->crypt[i] = NULL;
3355 if (local->ap != NULL)
3356 hostap_free_data(local->ap);
3358 #ifndef PRISM2_NO_PROCFS_DEBUG
3359 if (local->proc != NULL)
3360 remove_proc_entry("registers", local->proc);
3361 #endif /* PRISM2_NO_PROCFS_DEBUG */
3362 hostap_remove_proc(local);
3364 tx_cb = local->tx_callback;
3365 while (tx_cb != NULL) {
3367 tx_cb = tx_cb->next;
3371 hostap_set_hostapd(local, 0, 0);
3372 hostap_set_hostapd_sta(local, 0, 0);
3374 for (i = 0; i < PRISM2_FRAG_CACHE_LEN; i++) {
3375 if (local->frag_cache[i].skb != NULL)
3376 dev_kfree_skb(local->frag_cache[i].skb);
3379 #ifdef PRISM2_DOWNLOAD_SUPPORT
3380 prism2_download_free_data(local->dl_pri);
3381 prism2_download_free_data(local->dl_sec);
3382 #endif /* PRISM2_DOWNLOAD_SUPPORT */
3384 list_for_each_safe(ptr, n, &local->hostap_interfaces) {
3385 iface = list_entry(ptr, struct hostap_interface, list);
3386 if (iface->type == HOSTAP_INTERFACE_MASTER) {
3387 /* special handling for this interface below */
3390 hostap_remove_interface(iface->dev, 0, 1);
3393 prism2_clear_set_tim_queue(local);
3395 list_for_each_safe(ptr, n, &local->bss_list) {
3396 struct hostap_bss_info *bss =
3397 list_entry(ptr, struct hostap_bss_info, list);
3402 kfree(local->last_scan_results);
3403 kfree(local->generic_elem);
3405 unregister_netdev(local->dev);
3406 free_netdev(local->dev);
3411 static void prism2_suspend(struct net_device *dev)
3413 struct hostap_interface *iface;
3414 struct local_info *local;
3415 union iwreq_data wrqu;
3418 local = iface->local;
3420 /* Send disconnect event, e.g., to trigger reassociation after resume
3421 * if wpa_supplicant is used. */
3422 memset(&wrqu, 0, sizeof(wrqu));
3423 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3424 wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL);
3426 /* Disable hardware and firmware */
3427 prism2_hw_shutdown(dev, 0);
3429 #endif /* PRISM2_PLX */
3432 /* These might at some point be compiled separately and used as separate
3433 * kernel modules or linked into one */
3434 #ifdef PRISM2_DOWNLOAD_SUPPORT
3435 #include "hostap_download.c"
3436 #endif /* PRISM2_DOWNLOAD_SUPPORT */
3438 #ifdef PRISM2_CALLBACK
3439 /* External hostap_callback.c file can be used to, e.g., blink activity led.
3440 * This can use platform specific code and must define prism2_callback()
3441 * function (if PRISM2_CALLBACK is not defined, these function calls are not
3443 #include "hostap_callback.c"
3444 #endif /* PRISM2_CALLBACK */