1 /* main.c - (formerly known as dldwd_cs.c, orinoco_cs.c and orinoco.c)
3 * A driver for Hermes or Prism 2 chipset based PCMCIA wireless
4 * adaptors, with Lucent/Agere, Intersil or Symbol firmware.
6 * Current maintainers (as of 29 September 2003) are:
7 * Pavel Roskin <proski AT gnu.org>
8 * and David Gibson <hermes AT gibson.dropbear.id.au>
10 * (C) Copyright David Gibson, IBM Corporation 2001-2003.
11 * Copyright (C) 2000 David Gibson, Linuxcare Australia.
12 * With some help from :
13 * Copyright (C) 2001 Jean Tourrilhes, HP Labs
14 * Copyright (C) 2001 Benjamin Herrenschmidt
16 * Based on dummy_cs.c 1.27 2000/06/12 21:27:25
18 * Portions based on wvlan_cs.c 1.0.6, Copyright Andreas Neuhaus <andy
19 * AT fasta.fh-dortmund.de>
20 * http://www.stud.fh-dortmund.de/~andy/wvlan/
22 * The contents of this file are subject to the Mozilla Public License
23 * Version 1.1 (the "License"); you may not use this file except in
24 * compliance with the License. You may obtain a copy of the License
25 * at http://www.mozilla.org/MPL/
27 * Software distributed under the License is distributed on an "AS IS"
28 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
29 * the License for the specific language governing rights and
30 * limitations under the License.
32 * The initial developer of the original code is David A. Hinds
33 * <dahinds AT users.sourceforge.net>. Portions created by David
34 * A. Hinds are Copyright (C) 1999 David A. Hinds. All Rights
37 * Alternatively, the contents of this file may be used under the
38 * terms of the GNU General Public License version 2 (the "GPL"), in
39 * which case the provisions of the GPL are applicable instead of the
40 * above. If you wish to allow the use of your version of this file
41 * only under the terms of the GPL and not to allow others to use your
42 * version of this file under the MPL, indicate your decision by
43 * deleting the provisions above and replace them with the notice and
44 * other provisions required by the GPL. If you do not delete the
45 * provisions above, a recipient may use your version of this file
46 * under either the MPL or the GPL. */
50 * o Handle de-encapsulation within network layer, provide 802.11
51 * headers (patch from Thomas 'Dent' Mirlacher)
52 * o Fix possible races in SPY handling.
53 * o Disconnect wireless extensions from fundamental configuration.
54 * o (maybe) Software WEP support (patch from Stano Meduna).
55 * o (maybe) Use multiple Tx buffers - driver handling queue
56 * rather than firmware.
59 /* Locking and synchronization:
61 * The basic principle is that everything is serialized through a
62 * single spinlock, priv->lock. The lock is used in user, bh and irq
63 * context, so when taken outside hardirq context it should always be
64 * taken with interrupts disabled. The lock protects both the
65 * hardware and the struct orinoco_private.
67 * Another flag, priv->hw_unavailable indicates that the hardware is
68 * unavailable for an extended period of time (e.g. suspended, or in
69 * the middle of a hard reset). This flag is protected by the
70 * spinlock. All code which touches the hardware should check the
71 * flag after taking the lock, and if it is set, give up on whatever
72 * they are doing and drop the lock again. The orinoco_lock()
73 * function handles this (it unlocks and returns -EBUSY if
74 * hw_unavailable is non-zero).
77 #define DRIVER_NAME "orinoco"
79 #include <linux/module.h>
80 #include <linux/kernel.h>
81 #include <linux/init.h>
82 #include <linux/delay.h>
83 #include <linux/device.h>
84 #include <linux/netdevice.h>
85 #include <linux/etherdevice.h>
86 #include <linux/suspend.h>
87 #include <linux/if_arp.h>
88 #include <linux/wireless.h>
89 #include <linux/ieee80211.h>
90 #include <net/iw_handler.h>
91 #include <net/cfg80211.h>
93 #include "hermes_rid.h"
94 #include "hermes_dld.h"
105 /********************************************************************/
106 /* Module information */
107 /********************************************************************/
109 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org> & "
110 "David Gibson <hermes@gibson.dropbear.id.au>");
111 MODULE_DESCRIPTION("Driver for Lucent Orinoco, Prism II based "
112 "and similar wireless cards");
113 MODULE_LICENSE("Dual MPL/GPL");
115 /* Level of debugging. Used in the macros in orinoco.h */
117 int orinoco_debug = ORINOCO_DEBUG;
118 EXPORT_SYMBOL(orinoco_debug);
119 module_param(orinoco_debug, int, 0644);
120 MODULE_PARM_DESC(orinoco_debug, "Debug level");
123 static int suppress_linkstatus; /* = 0 */
124 module_param(suppress_linkstatus, bool, 0644);
125 MODULE_PARM_DESC(suppress_linkstatus, "Don't log link status changes");
127 static int ignore_disconnect; /* = 0 */
128 module_param(ignore_disconnect, int, 0644);
129 MODULE_PARM_DESC(ignore_disconnect,
130 "Don't report lost link to the network layer");
132 int force_monitor; /* = 0 */
133 module_param(force_monitor, int, 0644);
134 MODULE_PARM_DESC(force_monitor, "Allow monitor mode for all firmware versions");
136 /********************************************************************/
137 /* Internal constants */
138 /********************************************************************/
140 /* 802.2 LLC/SNAP header used for Ethernet encapsulation over 802.11 */
141 static const u8 encaps_hdr[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
142 #define ENCAPS_OVERHEAD (sizeof(encaps_hdr) + 2)
144 #define ORINOCO_MIN_MTU 256
145 #define ORINOCO_MAX_MTU (IEEE80211_MAX_DATA_LEN - ENCAPS_OVERHEAD)
147 #define MAX_IRQLOOPS_PER_IRQ 10
148 #define MAX_IRQLOOPS_PER_JIFFY (20000/HZ) /* Based on a guestimate of
149 * how many events the
151 * legitimately generate */
153 #define DUMMY_FID 0xFFFF
155 /*#define MAX_MULTICAST(priv) (priv->firmware_type == FIRMWARE_TYPE_AGERE ? \
156 HERMES_MAX_MULTICAST : 0)*/
157 #define MAX_MULTICAST(priv) (HERMES_MAX_MULTICAST)
159 #define ORINOCO_INTEN (HERMES_EV_RX | HERMES_EV_ALLOC \
160 | HERMES_EV_TX | HERMES_EV_TXEXC \
161 | HERMES_EV_WTERR | HERMES_EV_INFO \
164 /********************************************************************/
166 /********************************************************************/
168 /* Beginning of the Tx descriptor, used in TxExc handling */
169 struct hermes_txexc_data {
170 struct hermes_tx_descriptor desc;
174 } __attribute__ ((packed));
176 /* Rx frame header except compatibility 802.3 header */
177 struct hermes_rx_descriptor {
198 } __attribute__ ((packed));
200 struct orinoco_rx_data {
201 struct hermes_rx_descriptor *desc;
203 struct list_head list;
206 struct orinoco_scan_data {
210 struct list_head list;
213 /********************************************************************/
214 /* Function prototypes */
215 /********************************************************************/
217 static int __orinoco_set_multicast_list(struct net_device *dev);
218 static int __orinoco_up(struct orinoco_private *priv);
219 static int __orinoco_down(struct orinoco_private *priv);
220 static int __orinoco_commit(struct orinoco_private *priv);
222 /********************************************************************/
223 /* Internal helper functions */
224 /********************************************************************/
226 void set_port_type(struct orinoco_private *priv)
228 switch (priv->iw_mode) {
229 case NL80211_IFTYPE_STATION:
231 priv->createibss = 0;
233 case NL80211_IFTYPE_ADHOC:
234 if (priv->prefer_port3) {
236 priv->createibss = 0;
238 priv->port_type = priv->ibss_port;
239 priv->createibss = 1;
242 case NL80211_IFTYPE_MONITOR:
244 priv->createibss = 0;
247 printk(KERN_ERR "%s: Invalid priv->iw_mode in set_port_type()\n",
252 /********************************************************************/
254 /********************************************************************/
256 int orinoco_open(struct net_device *dev)
258 struct orinoco_private *priv = ndev_priv(dev);
262 if (orinoco_lock(priv, &flags) != 0)
265 err = __orinoco_up(priv);
270 orinoco_unlock(priv, &flags);
274 EXPORT_SYMBOL(orinoco_open);
276 int orinoco_stop(struct net_device *dev)
278 struct orinoco_private *priv = ndev_priv(dev);
281 /* We mustn't use orinoco_lock() here, because we need to be
282 able to close the interface even if hw_unavailable is set
283 (e.g. as we're released after a PC Card removal) */
284 orinoco_lock_irq(priv);
288 err = __orinoco_down(priv);
290 orinoco_unlock_irq(priv);
294 EXPORT_SYMBOL(orinoco_stop);
296 struct net_device_stats *orinoco_get_stats(struct net_device *dev)
298 struct orinoco_private *priv = ndev_priv(dev);
302 EXPORT_SYMBOL(orinoco_get_stats);
304 void orinoco_set_multicast_list(struct net_device *dev)
306 struct orinoco_private *priv = ndev_priv(dev);
309 if (orinoco_lock(priv, &flags) != 0) {
310 printk(KERN_DEBUG "%s: orinoco_set_multicast_list() "
311 "called when hw_unavailable\n", dev->name);
315 __orinoco_set_multicast_list(dev);
316 orinoco_unlock(priv, &flags);
318 EXPORT_SYMBOL(orinoco_set_multicast_list);
320 int orinoco_change_mtu(struct net_device *dev, int new_mtu)
322 struct orinoco_private *priv = ndev_priv(dev);
324 if ((new_mtu < ORINOCO_MIN_MTU) || (new_mtu > ORINOCO_MAX_MTU))
327 /* MTU + encapsulation + header length */
328 if ((new_mtu + ENCAPS_OVERHEAD + sizeof(struct ieee80211_hdr)) >
329 (priv->nicbuf_size - ETH_HLEN))
336 EXPORT_SYMBOL(orinoco_change_mtu);
338 /********************************************************************/
340 /********************************************************************/
342 static netdev_tx_t orinoco_xmit(struct sk_buff *skb, struct net_device *dev)
344 struct orinoco_private *priv = ndev_priv(dev);
345 struct net_device_stats *stats = &priv->stats;
346 struct orinoco_tkip_key *key;
347 hermes_t *hw = &priv->hw;
349 u16 txfid = priv->txfid;
355 if (!netif_running(dev)) {
356 printk(KERN_ERR "%s: Tx on stopped device!\n",
358 return NETDEV_TX_BUSY;
361 if (netif_queue_stopped(dev)) {
362 printk(KERN_DEBUG "%s: Tx while transmitter busy!\n",
364 return NETDEV_TX_BUSY;
367 if (orinoco_lock(priv, &flags) != 0) {
368 printk(KERN_ERR "%s: orinoco_xmit() called while hw_unavailable\n",
370 return NETDEV_TX_BUSY;
373 if (!netif_carrier_ok(dev) ||
374 (priv->iw_mode == NL80211_IFTYPE_MONITOR)) {
375 /* Oops, the firmware hasn't established a connection,
376 silently drop the packet (this seems to be the
381 /* Check packet length */
382 if (skb->len < ETH_HLEN)
385 key = (struct orinoco_tkip_key *) priv->keys[priv->tx_key].key;
387 do_mic = ((priv->encode_alg == ORINOCO_ALG_TKIP) &&
390 tx_control = HERMES_TXCTRL_TX_OK | HERMES_TXCTRL_TX_EX;
393 tx_control |= (priv->tx_key << HERMES_MIC_KEY_ID_SHIFT) |
396 if (priv->has_alt_txcntl) {
397 /* WPA enabled firmwares have tx_cntl at the end of
398 * the 802.11 header. So write zeroed descriptor and
399 * 802.11 header at the same time
401 char desc[HERMES_802_3_OFFSET];
402 __le16 *txcntl = (__le16 *) &desc[HERMES_TXCNTL2_OFFSET];
404 memset(&desc, 0, sizeof(desc));
406 *txcntl = cpu_to_le16(tx_control);
407 err = hw->ops->bap_pwrite(hw, USER_BAP, &desc, sizeof(desc),
411 printk(KERN_ERR "%s: Error %d writing Tx "
412 "descriptor to BAP\n", dev->name, err);
416 struct hermes_tx_descriptor desc;
418 memset(&desc, 0, sizeof(desc));
420 desc.tx_control = cpu_to_le16(tx_control);
421 err = hw->ops->bap_pwrite(hw, USER_BAP, &desc, sizeof(desc),
425 printk(KERN_ERR "%s: Error %d writing Tx "
426 "descriptor to BAP\n", dev->name, err);
430 /* Clear the 802.11 header and data length fields - some
431 * firmwares (e.g. Lucent/Agere 8.xx) appear to get confused
432 * if this isn't done. */
433 hermes_clear_words(hw, HERMES_DATA0,
434 HERMES_802_3_OFFSET - HERMES_802_11_OFFSET);
437 eh = (struct ethhdr *)skb->data;
439 /* Encapsulate Ethernet-II frames */
440 if (ntohs(eh->h_proto) > ETH_DATA_LEN) { /* Ethernet-II frame */
441 struct header_struct {
442 struct ethhdr eth; /* 802.3 header */
443 u8 encap[6]; /* 802.2 header */
444 } __attribute__ ((packed)) hdr;
446 /* Strip destination and source from the data */
447 skb_pull(skb, 2 * ETH_ALEN);
449 /* And move them to a separate header */
450 memcpy(&hdr.eth, eh, 2 * ETH_ALEN);
451 hdr.eth.h_proto = htons(sizeof(encaps_hdr) + skb->len);
452 memcpy(hdr.encap, encaps_hdr, sizeof(encaps_hdr));
454 /* Insert the SNAP header */
455 if (skb_headroom(skb) < sizeof(hdr)) {
457 "%s: Not enough headroom for 802.2 headers %d\n",
458 dev->name, skb_headroom(skb));
461 eh = (struct ethhdr *) skb_push(skb, sizeof(hdr));
462 memcpy(eh, &hdr, sizeof(hdr));
465 err = hw->ops->bap_pwrite(hw, USER_BAP, skb->data, skb->len,
466 txfid, HERMES_802_3_OFFSET);
468 printk(KERN_ERR "%s: Error %d writing packet to BAP\n",
473 /* Calculate Michael MIC */
475 u8 mic_buf[MICHAEL_MIC_LEN + 1];
481 /* MIC start is on an odd boundary */
482 mic_buf[0] = skb->data[skb->len - 1];
484 offset = skb->len - 1;
485 len = MICHAEL_MIC_LEN + 1;
489 len = MICHAEL_MIC_LEN;
492 orinoco_mic(priv->tx_tfm_mic, key->tx_mic,
493 eh->h_dest, eh->h_source, 0 /* priority */,
494 skb->data + ETH_HLEN, skb->len - ETH_HLEN, mic);
497 err = hw->ops->bap_pwrite(hw, USER_BAP, &mic_buf[0], len,
498 txfid, HERMES_802_3_OFFSET + offset);
500 printk(KERN_ERR "%s: Error %d writing MIC to BAP\n",
506 /* Finally, we actually initiate the send */
507 netif_stop_queue(dev);
509 err = hw->ops->cmd_wait(hw, HERMES_CMD_TX | HERMES_CMD_RECL,
512 netif_start_queue(dev);
514 printk(KERN_ERR "%s: Error %d transmitting packet\n",
519 dev->trans_start = jiffies;
520 stats->tx_bytes += HERMES_802_3_OFFSET + skb->len;
528 orinoco_unlock(priv, &flags);
534 schedule_work(&priv->reset_work);
535 orinoco_unlock(priv, &flags);
536 return NETDEV_TX_BUSY;
539 static void __orinoco_ev_alloc(struct net_device *dev, hermes_t *hw)
541 struct orinoco_private *priv = ndev_priv(dev);
542 u16 fid = hermes_read_regn(hw, ALLOCFID);
544 if (fid != priv->txfid) {
545 if (fid != DUMMY_FID)
546 printk(KERN_WARNING "%s: Allocate event on unexpected fid (%04X)\n",
551 hermes_write_regn(hw, ALLOCFID, DUMMY_FID);
554 static void __orinoco_ev_tx(struct net_device *dev, hermes_t *hw)
556 struct orinoco_private *priv = ndev_priv(dev);
557 struct net_device_stats *stats = &priv->stats;
561 netif_wake_queue(dev);
563 hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID);
566 static void __orinoco_ev_txexc(struct net_device *dev, hermes_t *hw)
568 struct orinoco_private *priv = ndev_priv(dev);
569 struct net_device_stats *stats = &priv->stats;
570 u16 fid = hermes_read_regn(hw, TXCOMPLFID);
572 struct hermes_txexc_data hdr;
575 if (fid == DUMMY_FID)
576 return; /* Nothing's really happened */
578 /* Read part of the frame header - we need status and addr1 */
579 err = hw->ops->bap_pread(hw, IRQ_BAP, &hdr,
580 sizeof(struct hermes_txexc_data),
583 hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID);
587 printk(KERN_WARNING "%s: Unable to read descriptor on Tx error "
588 "(FID=%04X error %d)\n",
589 dev->name, fid, err);
593 DEBUG(1, "%s: Tx error, err %d (FID=%04X)\n", dev->name,
596 /* We produce a TXDROP event only for retry or lifetime
597 * exceeded, because that's the only status that really mean
598 * that this particular node went away.
599 * Other errors means that *we* screwed up. - Jean II */
600 status = le16_to_cpu(hdr.desc.status);
601 if (status & (HERMES_TXSTAT_RETRYERR | HERMES_TXSTAT_AGEDERR)) {
602 union iwreq_data wrqu;
604 /* Copy 802.11 dest address.
605 * We use the 802.11 header because the frame may
606 * not be 802.3 or may be mangled...
607 * In Ad-Hoc mode, it will be the node address.
608 * In managed mode, it will be most likely the AP addr
609 * User space will figure out how to convert it to
610 * whatever it needs (IP address or else).
612 memcpy(wrqu.addr.sa_data, hdr.addr1, ETH_ALEN);
613 wrqu.addr.sa_family = ARPHRD_ETHER;
615 /* Send event to user space */
616 wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL);
619 netif_wake_queue(dev);
622 void orinoco_tx_timeout(struct net_device *dev)
624 struct orinoco_private *priv = ndev_priv(dev);
625 struct net_device_stats *stats = &priv->stats;
626 struct hermes *hw = &priv->hw;
628 printk(KERN_WARNING "%s: Tx timeout! "
629 "ALLOCFID=%04x, TXCOMPLFID=%04x, EVSTAT=%04x\n",
630 dev->name, hermes_read_regn(hw, ALLOCFID),
631 hermes_read_regn(hw, TXCOMPLFID), hermes_read_regn(hw, EVSTAT));
635 schedule_work(&priv->reset_work);
637 EXPORT_SYMBOL(orinoco_tx_timeout);
639 /********************************************************************/
640 /* Rx path (data frames) */
641 /********************************************************************/
643 /* Does the frame have a SNAP header indicating it should be
644 * de-encapsulated to Ethernet-II? */
645 static inline int is_ethersnap(void *_hdr)
649 /* We de-encapsulate all packets which, a) have SNAP headers
650 * (i.e. SSAP=DSAP=0xaa and CTRL=0x3 in the 802.2 LLC header
651 * and where b) the OUI of the SNAP header is 00:00:00 or
652 * 00:00:f8 - we need both because different APs appear to use
653 * different OUIs for some reason */
654 return (memcmp(hdr, &encaps_hdr, 5) == 0)
655 && ((hdr[5] == 0x00) || (hdr[5] == 0xf8));
658 static inline void orinoco_spy_gather(struct net_device *dev, u_char *mac,
659 int level, int noise)
661 struct iw_quality wstats;
662 wstats.level = level - 0x95;
663 wstats.noise = noise - 0x95;
664 wstats.qual = (level > noise) ? (level - noise) : 0;
665 wstats.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
666 /* Update spy records */
667 wireless_spy_update(dev, mac, &wstats);
670 static void orinoco_stat_gather(struct net_device *dev,
672 struct hermes_rx_descriptor *desc)
674 struct orinoco_private *priv = ndev_priv(dev);
676 /* Using spy support with lots of Rx packets, like in an
677 * infrastructure (AP), will really slow down everything, because
678 * the MAC address must be compared to each entry of the spy list.
679 * If the user really asks for it (set some address in the
680 * spy list), we do it, but he will pay the price.
681 * Note that to get here, you need both WIRELESS_SPY
682 * compiled in AND some addresses in the list !!!
684 /* Note : gcc will optimise the whole section away if
685 * WIRELESS_SPY is not defined... - Jean II */
686 if (SPY_NUMBER(priv)) {
687 orinoco_spy_gather(dev, skb_mac_header(skb) + ETH_ALEN,
688 desc->signal, desc->silence);
693 * orinoco_rx_monitor - handle received monitor frames.
698 * desc rx descriptor of the frame
700 * Call context: interrupt
702 static void orinoco_rx_monitor(struct net_device *dev, u16 rxfid,
703 struct hermes_rx_descriptor *desc)
705 u32 hdrlen = 30; /* return full header by default */
711 struct orinoco_private *priv = ndev_priv(dev);
712 struct net_device_stats *stats = &priv->stats;
713 hermes_t *hw = &priv->hw;
715 len = le16_to_cpu(desc->data_len);
717 /* Determine the size of the header and the data */
718 fc = le16_to_cpu(desc->frame_ctl);
719 switch (fc & IEEE80211_FCTL_FTYPE) {
720 case IEEE80211_FTYPE_DATA:
721 if ((fc & IEEE80211_FCTL_TODS)
722 && (fc & IEEE80211_FCTL_FROMDS))
728 case IEEE80211_FTYPE_MGMT:
732 case IEEE80211_FTYPE_CTL:
733 switch (fc & IEEE80211_FCTL_STYPE) {
734 case IEEE80211_STYPE_PSPOLL:
735 case IEEE80211_STYPE_RTS:
736 case IEEE80211_STYPE_CFEND:
737 case IEEE80211_STYPE_CFENDACK:
740 case IEEE80211_STYPE_CTS:
741 case IEEE80211_STYPE_ACK:
747 /* Unknown frame type */
751 /* sanity check the length */
752 if (datalen > IEEE80211_MAX_DATA_LEN + 12) {
753 printk(KERN_DEBUG "%s: oversized monitor frame, "
754 "data length = %d\n", dev->name, datalen);
755 stats->rx_length_errors++;
759 skb = dev_alloc_skb(hdrlen + datalen);
761 printk(KERN_WARNING "%s: Cannot allocate skb for monitor frame\n",
766 /* Copy the 802.11 header to the skb */
767 memcpy(skb_put(skb, hdrlen), &(desc->frame_ctl), hdrlen);
768 skb_reset_mac_header(skb);
770 /* If any, copy the data from the card to the skb */
772 err = hw->ops->bap_pread(hw, IRQ_BAP, skb_put(skb, datalen),
773 ALIGN(datalen, 2), rxfid,
774 HERMES_802_2_OFFSET);
776 printk(KERN_ERR "%s: error %d reading monitor frame\n",
783 skb->ip_summed = CHECKSUM_NONE;
784 skb->pkt_type = PACKET_OTHERHOST;
785 skb->protocol = cpu_to_be16(ETH_P_802_2);
788 stats->rx_bytes += skb->len;
794 dev_kfree_skb_irq(skb);
800 static void __orinoco_ev_rx(struct net_device *dev, hermes_t *hw)
802 struct orinoco_private *priv = ndev_priv(dev);
803 struct net_device_stats *stats = &priv->stats;
804 struct iw_statistics *wstats = &priv->wstats;
805 struct sk_buff *skb = NULL;
808 struct hermes_rx_descriptor *desc;
809 struct orinoco_rx_data *rx_data;
812 desc = kmalloc(sizeof(*desc), GFP_ATOMIC);
815 "%s: Can't allocate space for RX descriptor\n",
820 rxfid = hermes_read_regn(hw, RXFID);
822 err = hw->ops->bap_pread(hw, IRQ_BAP, desc, sizeof(*desc),
825 printk(KERN_ERR "%s: error %d reading Rx descriptor. "
826 "Frame dropped.\n", dev->name, err);
830 status = le16_to_cpu(desc->status);
832 if (status & HERMES_RXSTAT_BADCRC) {
833 DEBUG(1, "%s: Bad CRC on Rx. Frame dropped.\n",
835 stats->rx_crc_errors++;
839 /* Handle frames in monitor mode */
840 if (priv->iw_mode == NL80211_IFTYPE_MONITOR) {
841 orinoco_rx_monitor(dev, rxfid, desc);
845 if (status & HERMES_RXSTAT_UNDECRYPTABLE) {
846 DEBUG(1, "%s: Undecryptable frame on Rx. Frame dropped.\n",
848 wstats->discard.code++;
852 length = le16_to_cpu(desc->data_len);
855 if (length < 3) { /* No for even an 802.2 LLC header */
856 /* At least on Symbol firmware with PCF we get quite a
857 lot of these legitimately - Poll frames with no
861 if (length > IEEE80211_MAX_DATA_LEN) {
862 printk(KERN_WARNING "%s: Oversized frame received (%d bytes)\n",
864 stats->rx_length_errors++;
868 /* Payload size does not include Michael MIC. Increase payload
869 * size to read it together with the data. */
870 if (status & HERMES_RXSTAT_MIC)
871 length += MICHAEL_MIC_LEN;
873 /* We need space for the packet data itself, plus an ethernet
874 header, plus 2 bytes so we can align the IP header on a
875 32bit boundary, plus 1 byte so we can read in odd length
876 packets from the card, which has an IO granularity of 16
878 skb = dev_alloc_skb(length+ETH_HLEN+2+1);
880 printk(KERN_WARNING "%s: Can't allocate skb for Rx\n",
885 /* We'll prepend the header, so reserve space for it. The worst
886 case is no decapsulation, when 802.3 header is prepended and
887 nothing is removed. 2 is for aligning the IP header. */
888 skb_reserve(skb, ETH_HLEN + 2);
890 err = hw->ops->bap_pread(hw, IRQ_BAP, skb_put(skb, length),
891 ALIGN(length, 2), rxfid,
892 HERMES_802_2_OFFSET);
894 printk(KERN_ERR "%s: error %d reading frame. "
895 "Frame dropped.\n", dev->name, err);
899 /* Add desc and skb to rx queue */
900 rx_data = kzalloc(sizeof(*rx_data), GFP_ATOMIC);
902 printk(KERN_WARNING "%s: Can't allocate RX packet\n",
906 rx_data->desc = desc;
908 list_add_tail(&rx_data->list, &priv->rx_list);
909 tasklet_schedule(&priv->rx_tasklet);
914 dev_kfree_skb_irq(skb);
922 static void orinoco_rx(struct net_device *dev,
923 struct hermes_rx_descriptor *desc,
926 struct orinoco_private *priv = ndev_priv(dev);
927 struct net_device_stats *stats = &priv->stats;
932 status = le16_to_cpu(desc->status);
933 length = le16_to_cpu(desc->data_len);
934 fc = le16_to_cpu(desc->frame_ctl);
936 /* Calculate and check MIC */
937 if (status & HERMES_RXSTAT_MIC) {
938 struct orinoco_tkip_key *key;
939 int key_id = ((status & HERMES_RXSTAT_MIC_KEY_ID) >>
940 HERMES_MIC_KEY_ID_SHIFT);
941 u8 mic[MICHAEL_MIC_LEN];
943 u8 *src = (fc & IEEE80211_FCTL_FROMDS) ?
944 desc->addr3 : desc->addr2;
946 /* Extract Michael MIC from payload */
947 rxmic = skb->data + skb->len - MICHAEL_MIC_LEN;
949 skb_trim(skb, skb->len - MICHAEL_MIC_LEN);
950 length -= MICHAEL_MIC_LEN;
952 key = (struct orinoco_tkip_key *) priv->keys[key_id].key;
955 printk(KERN_WARNING "%s: Received encrypted frame from "
956 "%pM using key %i, but key is not installed\n",
957 dev->name, src, key_id);
961 orinoco_mic(priv->rx_tfm_mic, key->rx_mic, desc->addr1, src,
962 0, /* priority or QoS? */
963 skb->data, skb->len, &mic[0]);
965 if (memcmp(mic, rxmic,
967 union iwreq_data wrqu;
968 struct iw_michaelmicfailure wxmic;
970 printk(KERN_WARNING "%s: "
971 "Invalid Michael MIC in data frame from %pM, "
973 dev->name, src, key_id);
975 /* TODO: update stats */
977 /* Notify userspace */
978 memset(&wxmic, 0, sizeof(wxmic));
979 wxmic.flags = key_id & IW_MICFAILURE_KEY_ID;
980 wxmic.flags |= (desc->addr1[0] & 1) ?
981 IW_MICFAILURE_GROUP : IW_MICFAILURE_PAIRWISE;
982 wxmic.src_addr.sa_family = ARPHRD_ETHER;
983 memcpy(wxmic.src_addr.sa_data, src, ETH_ALEN);
985 (void) orinoco_hw_get_tkip_iv(priv, key_id,
988 memset(&wrqu, 0, sizeof(wrqu));
989 wrqu.data.length = sizeof(wxmic);
990 wireless_send_event(dev, IWEVMICHAELMICFAILURE, &wrqu,
997 /* Handle decapsulation
998 * In most cases, the firmware tell us about SNAP frames.
999 * For some reason, the SNAP frames sent by LinkSys APs
1000 * are not properly recognised by most firmwares.
1001 * So, check ourselves */
1002 if (length >= ENCAPS_OVERHEAD &&
1003 (((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_1042) ||
1004 ((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_TUNNEL) ||
1005 is_ethersnap(skb->data))) {
1006 /* These indicate a SNAP within 802.2 LLC within
1007 802.11 frame which we'll need to de-encapsulate to
1008 the original EthernetII frame. */
1009 hdr = (struct ethhdr *)skb_push(skb,
1010 ETH_HLEN - ENCAPS_OVERHEAD);
1012 /* 802.3 frame - prepend 802.3 header as is */
1013 hdr = (struct ethhdr *)skb_push(skb, ETH_HLEN);
1014 hdr->h_proto = htons(length);
1016 memcpy(hdr->h_dest, desc->addr1, ETH_ALEN);
1017 if (fc & IEEE80211_FCTL_FROMDS)
1018 memcpy(hdr->h_source, desc->addr3, ETH_ALEN);
1020 memcpy(hdr->h_source, desc->addr2, ETH_ALEN);
1022 skb->protocol = eth_type_trans(skb, dev);
1023 skb->ip_summed = CHECKSUM_NONE;
1024 if (fc & IEEE80211_FCTL_TODS)
1025 skb->pkt_type = PACKET_OTHERHOST;
1027 /* Process the wireless stats if needed */
1028 orinoco_stat_gather(dev, skb, desc);
1030 /* Pass the packet to the networking stack */
1032 stats->rx_packets++;
1033 stats->rx_bytes += length;
1040 stats->rx_dropped++;
1043 static void orinoco_rx_isr_tasklet(unsigned long data)
1045 struct orinoco_private *priv = (struct orinoco_private *) data;
1046 struct net_device *dev = priv->ndev;
1047 struct orinoco_rx_data *rx_data, *temp;
1048 struct hermes_rx_descriptor *desc;
1049 struct sk_buff *skb;
1050 unsigned long flags;
1052 /* orinoco_rx requires the driver lock, and we also need to
1053 * protect priv->rx_list, so just hold the lock over the
1056 * If orinoco_lock fails, we've unplugged the card. In this
1057 * case just abort. */
1058 if (orinoco_lock(priv, &flags) != 0)
1061 /* extract desc and skb from queue */
1062 list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) {
1063 desc = rx_data->desc;
1065 list_del(&rx_data->list);
1068 orinoco_rx(dev, desc, skb);
1073 orinoco_unlock(priv, &flags);
1076 /********************************************************************/
1077 /* Rx path (info frames) */
1078 /********************************************************************/
1080 static void print_linkstatus(struct net_device *dev, u16 status)
1084 if (suppress_linkstatus)
1088 case HERMES_LINKSTATUS_NOT_CONNECTED:
1089 s = "Not Connected";
1091 case HERMES_LINKSTATUS_CONNECTED:
1094 case HERMES_LINKSTATUS_DISCONNECTED:
1097 case HERMES_LINKSTATUS_AP_CHANGE:
1100 case HERMES_LINKSTATUS_AP_OUT_OF_RANGE:
1101 s = "AP Out of Range";
1103 case HERMES_LINKSTATUS_AP_IN_RANGE:
1106 case HERMES_LINKSTATUS_ASSOC_FAILED:
1107 s = "Association Failed";
1113 printk(KERN_DEBUG "%s: New link status: %s (%04x)\n",
1114 dev->name, s, status);
1117 /* Search scan results for requested BSSID, join it if found */
1118 static void orinoco_join_ap(struct work_struct *work)
1120 struct orinoco_private *priv =
1121 container_of(work, struct orinoco_private, join_work);
1122 struct net_device *dev = priv->ndev;
1123 struct hermes *hw = &priv->hw;
1125 unsigned long flags;
1129 } __attribute__ ((packed)) req;
1130 const int atom_len = offsetof(struct prism2_scan_apinfo, atim);
1131 struct prism2_scan_apinfo *atom = NULL;
1137 /* Allocate buffer for scan results */
1138 buf = kmalloc(MAX_SCAN_LEN, GFP_KERNEL);
1142 if (orinoco_lock(priv, &flags) != 0)
1145 /* Sanity checks in case user changed something in the meantime */
1146 if (!priv->bssid_fixed)
1149 if (strlen(priv->desired_essid) == 0)
1152 /* Read scan results from the firmware */
1153 err = hw->ops->read_ltv(hw, USER_BAP,
1154 HERMES_RID_SCANRESULTSTABLE,
1155 MAX_SCAN_LEN, &len, buf);
1157 printk(KERN_ERR "%s: Cannot read scan results\n",
1162 len = HERMES_RECLEN_TO_BYTES(len);
1164 /* Go through the scan results looking for the channel of the AP
1165 * we were requested to join */
1166 for (; offset + atom_len <= len; offset += atom_len) {
1167 atom = (struct prism2_scan_apinfo *) (buf + offset);
1168 if (memcmp(&atom->bssid, priv->desired_bssid, ETH_ALEN) == 0) {
1175 DEBUG(1, "%s: Requested AP not found in scan results\n",
1180 memcpy(req.bssid, priv->desired_bssid, ETH_ALEN);
1181 req.channel = atom->channel; /* both are little-endian */
1182 err = HERMES_WRITE_RECORD(hw, USER_BAP, HERMES_RID_CNFJOINREQUEST,
1185 printk(KERN_ERR "%s: Error issuing join request\n", dev->name);
1188 orinoco_unlock(priv, &flags);
1194 /* Send new BSSID to userspace */
1195 static void orinoco_send_bssid_wevent(struct orinoco_private *priv)
1197 struct net_device *dev = priv->ndev;
1198 struct hermes *hw = &priv->hw;
1199 union iwreq_data wrqu;
1202 err = hw->ops->read_ltv(hw, USER_BAP, HERMES_RID_CURRENTBSSID,
1203 ETH_ALEN, NULL, wrqu.ap_addr.sa_data);
1207 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1209 /* Send event to user space */
1210 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
1213 static void orinoco_send_assocreqie_wevent(struct orinoco_private *priv)
1215 struct net_device *dev = priv->ndev;
1216 struct hermes *hw = &priv->hw;
1217 union iwreq_data wrqu;
1225 err = hw->ops->read_ltv(hw, USER_BAP, HERMES_RID_CURRENT_ASSOC_REQ_INFO,
1226 sizeof(buf), NULL, &buf);
1230 ie = orinoco_get_wpa_ie(buf, sizeof(buf));
1232 int rem = sizeof(buf) - (ie - &buf[0]);
1233 wrqu.data.length = ie[1] + 2;
1234 if (wrqu.data.length > rem)
1235 wrqu.data.length = rem;
1237 if (wrqu.data.length)
1238 /* Send event to user space */
1239 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, ie);
1243 static void orinoco_send_assocrespie_wevent(struct orinoco_private *priv)
1245 struct net_device *dev = priv->ndev;
1246 struct hermes *hw = &priv->hw;
1247 union iwreq_data wrqu;
1249 u8 buf[88]; /* TODO: verify max size or IW_GENERIC_IE_MAX */
1255 err = hw->ops->read_ltv(hw, USER_BAP,
1256 HERMES_RID_CURRENT_ASSOC_RESP_INFO,
1257 sizeof(buf), NULL, &buf);
1261 ie = orinoco_get_wpa_ie(buf, sizeof(buf));
1263 int rem = sizeof(buf) - (ie - &buf[0]);
1264 wrqu.data.length = ie[1] + 2;
1265 if (wrqu.data.length > rem)
1266 wrqu.data.length = rem;
1268 if (wrqu.data.length)
1269 /* Send event to user space */
1270 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, ie);
1274 static void orinoco_send_wevents(struct work_struct *work)
1276 struct orinoco_private *priv =
1277 container_of(work, struct orinoco_private, wevent_work);
1278 unsigned long flags;
1280 if (orinoco_lock(priv, &flags) != 0)
1283 orinoco_send_assocreqie_wevent(priv);
1284 orinoco_send_assocrespie_wevent(priv);
1285 orinoco_send_bssid_wevent(priv);
1287 orinoco_unlock(priv, &flags);
1290 static void qbuf_scan(struct orinoco_private *priv, void *buf,
1293 struct orinoco_scan_data *sd;
1294 unsigned long flags;
1296 sd = kmalloc(sizeof(*sd), GFP_ATOMIC);
1301 spin_lock_irqsave(&priv->scan_lock, flags);
1302 list_add_tail(&sd->list, &priv->scan_list);
1303 spin_unlock_irqrestore(&priv->scan_lock, flags);
1305 schedule_work(&priv->process_scan);
1308 static void qabort_scan(struct orinoco_private *priv)
1310 struct orinoco_scan_data *sd;
1311 unsigned long flags;
1313 sd = kmalloc(sizeof(*sd), GFP_ATOMIC);
1314 sd->len = -1; /* Abort */
1316 spin_lock_irqsave(&priv->scan_lock, flags);
1317 list_add_tail(&sd->list, &priv->scan_list);
1318 spin_unlock_irqrestore(&priv->scan_lock, flags);
1320 schedule_work(&priv->process_scan);
1323 static void orinoco_process_scan_results(struct work_struct *work)
1325 struct orinoco_private *priv =
1326 container_of(work, struct orinoco_private, process_scan);
1327 struct orinoco_scan_data *sd, *temp;
1328 unsigned long flags;
1333 spin_lock_irqsave(&priv->scan_lock, flags);
1334 list_for_each_entry_safe(sd, temp, &priv->scan_list, list) {
1335 spin_unlock_irqrestore(&priv->scan_lock, flags);
1341 list_del(&sd->list);
1345 if (type == HERMES_INQ_CHANNELINFO)
1346 orinoco_add_extscan_result(priv, buf, len);
1348 orinoco_add_hostscan_results(priv, buf, len);
1351 } else if (priv->scan_request) {
1352 /* Either abort or complete the scan */
1353 cfg80211_scan_done(priv->scan_request, (len < 0));
1354 priv->scan_request = NULL;
1357 spin_lock_irqsave(&priv->scan_lock, flags);
1359 spin_unlock_irqrestore(&priv->scan_lock, flags);
1362 static void __orinoco_ev_info(struct net_device *dev, hermes_t *hw)
1364 struct orinoco_private *priv = ndev_priv(dev);
1369 } __attribute__ ((packed)) info;
1373 /* This is an answer to an INQUIRE command that we did earlier,
1374 * or an information "event" generated by the card
1375 * The controller return to us a pseudo frame containing
1376 * the information in question - Jean II */
1377 infofid = hermes_read_regn(hw, INFOFID);
1379 /* Read the info frame header - don't try too hard */
1380 err = hw->ops->bap_pread(hw, IRQ_BAP, &info, sizeof(info),
1383 printk(KERN_ERR "%s: error %d reading info frame. "
1384 "Frame dropped.\n", dev->name, err);
1388 len = HERMES_RECLEN_TO_BYTES(le16_to_cpu(info.len));
1389 type = le16_to_cpu(info.type);
1392 case HERMES_INQ_TALLIES: {
1393 struct hermes_tallies_frame tallies;
1394 struct iw_statistics *wstats = &priv->wstats;
1396 if (len > sizeof(tallies)) {
1397 printk(KERN_WARNING "%s: Tallies frame too long (%d bytes)\n",
1399 len = sizeof(tallies);
1402 err = hw->ops->bap_pread(hw, IRQ_BAP, &tallies, len,
1403 infofid, sizeof(info));
1407 /* Increment our various counters */
1408 /* wstats->discard.nwid - no wrong BSSID stuff */
1409 wstats->discard.code +=
1410 le16_to_cpu(tallies.RxWEPUndecryptable);
1411 if (len == sizeof(tallies))
1412 wstats->discard.code +=
1413 le16_to_cpu(tallies.RxDiscards_WEPICVError) +
1414 le16_to_cpu(tallies.RxDiscards_WEPExcluded);
1415 wstats->discard.misc +=
1416 le16_to_cpu(tallies.TxDiscardsWrongSA);
1417 wstats->discard.fragment +=
1418 le16_to_cpu(tallies.RxMsgInBadMsgFragments);
1419 wstats->discard.retries +=
1420 le16_to_cpu(tallies.TxRetryLimitExceeded);
1421 /* wstats->miss.beacon - no match */
1424 case HERMES_INQ_LINKSTATUS: {
1425 struct hermes_linkstatus linkstatus;
1429 if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
1432 if (len != sizeof(linkstatus)) {
1433 printk(KERN_WARNING "%s: Unexpected size for linkstatus frame (%d bytes)\n",
1438 err = hw->ops->bap_pread(hw, IRQ_BAP, &linkstatus, len,
1439 infofid, sizeof(info));
1442 newstatus = le16_to_cpu(linkstatus.linkstatus);
1444 /* Symbol firmware uses "out of range" to signal that
1445 * the hostscan frame can be requested. */
1446 if (newstatus == HERMES_LINKSTATUS_AP_OUT_OF_RANGE &&
1447 priv->firmware_type == FIRMWARE_TYPE_SYMBOL &&
1448 priv->has_hostscan && priv->scan_request) {
1449 hermes_inquire(hw, HERMES_INQ_HOSTSCAN_SYMBOL);
1453 connected = (newstatus == HERMES_LINKSTATUS_CONNECTED)
1454 || (newstatus == HERMES_LINKSTATUS_AP_CHANGE)
1455 || (newstatus == HERMES_LINKSTATUS_AP_IN_RANGE);
1458 netif_carrier_on(dev);
1459 else if (!ignore_disconnect)
1460 netif_carrier_off(dev);
1462 if (newstatus != priv->last_linkstatus) {
1463 priv->last_linkstatus = newstatus;
1464 print_linkstatus(dev, newstatus);
1465 /* The info frame contains only one word which is the
1466 * status (see hermes.h). The status is pretty boring
1467 * in itself, that's why we export the new BSSID...
1469 schedule_work(&priv->wevent_work);
1473 case HERMES_INQ_SCAN:
1474 if (!priv->scan_request && priv->bssid_fixed &&
1475 priv->firmware_type == FIRMWARE_TYPE_INTERSIL) {
1476 schedule_work(&priv->join_work);
1480 case HERMES_INQ_HOSTSCAN:
1481 case HERMES_INQ_HOSTSCAN_SYMBOL: {
1482 /* Result of a scanning. Contains information about
1483 * cells in the vicinity - Jean II */
1488 printk(KERN_WARNING "%s: Scan results too large (%d bytes)\n",
1494 /* Allocate buffer for results */
1495 buf = kmalloc(len, GFP_ATOMIC);
1497 /* No memory, so can't printk()... */
1502 /* Read scan data */
1503 err = hw->ops->bap_pread(hw, IRQ_BAP, (void *) buf, len,
1504 infofid, sizeof(info));
1511 #ifdef ORINOCO_DEBUG
1514 printk(KERN_DEBUG "Scan result [%02X", buf[0]);
1515 for (i = 1; i < (len * 2); i++)
1516 printk(":%02X", buf[i]);
1519 #endif /* ORINOCO_DEBUG */
1521 qbuf_scan(priv, buf, len, type);
1524 case HERMES_INQ_CHANNELINFO:
1526 struct agere_ext_scan_info *bss;
1528 if (!priv->scan_request) {
1529 printk(KERN_DEBUG "%s: Got chaninfo without scan, "
1530 "len=%d\n", dev->name, len);
1534 /* An empty result indicates that the scan is complete */
1536 qbuf_scan(priv, NULL, len, type);
1541 else if (len < (offsetof(struct agere_ext_scan_info,
1543 /* Drop this result now so we don't have to
1544 * keep checking later */
1546 "%s: Ext scan results too short (%d bytes)\n",
1551 bss = kmalloc(len, GFP_ATOMIC);
1555 /* Read scan data */
1556 err = hw->ops->bap_pread(hw, IRQ_BAP, (void *) bss, len,
1557 infofid, sizeof(info));
1561 qbuf_scan(priv, bss, len, type);
1565 case HERMES_INQ_SEC_STAT_AGERE:
1566 /* Security status (Agere specific) */
1567 /* Ignore this frame for now */
1568 if (priv->firmware_type == FIRMWARE_TYPE_AGERE)
1572 printk(KERN_DEBUG "%s: Unknown information frame received: "
1573 "type 0x%04x, length %d\n", dev->name, type, len);
1574 /* We don't actually do anything about it */
1581 static void __orinoco_ev_infdrop(struct net_device *dev, hermes_t *hw)
1583 if (net_ratelimit())
1584 printk(KERN_DEBUG "%s: Information frame lost.\n", dev->name);
1587 /********************************************************************/
1588 /* Internal hardware control routines */
1589 /********************************************************************/
1591 static int __orinoco_up(struct orinoco_private *priv)
1593 struct net_device *dev = priv->ndev;
1594 struct hermes *hw = &priv->hw;
1597 netif_carrier_off(dev); /* just to make sure */
1599 err = __orinoco_commit(priv);
1601 printk(KERN_ERR "%s: Error %d configuring card\n",
1606 /* Fire things up again */
1607 hermes_set_irqmask(hw, ORINOCO_INTEN);
1608 err = hermes_enable_port(hw, 0);
1610 printk(KERN_ERR "%s: Error %d enabling MAC port\n",
1615 netif_start_queue(dev);
1620 static int __orinoco_down(struct orinoco_private *priv)
1622 struct net_device *dev = priv->ndev;
1623 struct hermes *hw = &priv->hw;
1626 netif_stop_queue(dev);
1628 if (!priv->hw_unavailable) {
1629 if (!priv->broken_disableport) {
1630 err = hermes_disable_port(hw, 0);
1632 /* Some firmwares (e.g. Intersil 1.3.x) seem
1633 * to have problems disabling the port, oh
1635 printk(KERN_WARNING "%s: Error %d disabling MAC port\n",
1637 priv->broken_disableport = 1;
1640 hermes_set_irqmask(hw, 0);
1641 hermes_write_regn(hw, EVACK, 0xffff);
1644 /* firmware will have to reassociate */
1645 netif_carrier_off(dev);
1646 priv->last_linkstatus = 0xffff;
1651 static int orinoco_reinit_firmware(struct orinoco_private *priv)
1653 struct hermes *hw = &priv->hw;
1656 err = hw->ops->init(hw);
1657 if (priv->do_fw_download && !err) {
1658 err = orinoco_download(priv);
1660 priv->do_fw_download = 0;
1663 err = orinoco_hw_allocate_fid(priv);
1669 __orinoco_set_multicast_list(struct net_device *dev)
1671 struct orinoco_private *priv = ndev_priv(dev);
1673 int promisc, mc_count;
1675 /* The Hermes doesn't seem to have an allmulti mode, so we go
1676 * into promiscuous mode and let the upper levels deal. */
1677 if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI) ||
1678 (netdev_mc_count(dev) > MAX_MULTICAST(priv))) {
1683 mc_count = netdev_mc_count(dev);
1686 err = __orinoco_hw_set_multicast_list(priv, dev, mc_count, promisc);
1691 /* This must be called from user context, without locks held - use
1692 * schedule_work() */
1693 void orinoco_reset(struct work_struct *work)
1695 struct orinoco_private *priv =
1696 container_of(work, struct orinoco_private, reset_work);
1697 struct net_device *dev = priv->ndev;
1698 struct hermes *hw = &priv->hw;
1700 unsigned long flags;
1702 if (orinoco_lock(priv, &flags) != 0)
1703 /* When the hardware becomes available again, whatever
1704 * detects that is responsible for re-initializing
1705 * it. So no need for anything further */
1708 netif_stop_queue(dev);
1710 /* Shut off interrupts. Depending on what state the hardware
1711 * is in, this might not work, but we'll try anyway */
1712 hermes_set_irqmask(hw, 0);
1713 hermes_write_regn(hw, EVACK, 0xffff);
1715 priv->hw_unavailable++;
1716 priv->last_linkstatus = 0xffff; /* firmware will have to reassociate */
1717 netif_carrier_off(dev);
1719 orinoco_unlock(priv, &flags);
1721 /* Scanning support: Notify scan cancellation */
1722 if (priv->scan_request) {
1723 cfg80211_scan_done(priv->scan_request, 1);
1724 priv->scan_request = NULL;
1727 if (priv->hard_reset) {
1728 err = (*priv->hard_reset)(priv);
1730 printk(KERN_ERR "%s: orinoco_reset: Error %d "
1731 "performing hard reset\n", dev->name, err);
1736 err = orinoco_reinit_firmware(priv);
1738 printk(KERN_ERR "%s: orinoco_reset: Error %d re-initializing firmware\n",
1743 /* This has to be called from user context */
1744 orinoco_lock_irq(priv);
1746 priv->hw_unavailable--;
1748 /* priv->open or priv->hw_unavailable might have changed while
1749 * we dropped the lock */
1750 if (priv->open && (!priv->hw_unavailable)) {
1751 err = __orinoco_up(priv);
1753 printk(KERN_ERR "%s: orinoco_reset: Error %d reenabling card\n",
1756 dev->trans_start = jiffies;
1759 orinoco_unlock_irq(priv);
1763 hermes_set_irqmask(hw, 0);
1764 netif_device_detach(dev);
1765 printk(KERN_ERR "%s: Device has been disabled!\n", dev->name);
1768 static int __orinoco_commit(struct orinoco_private *priv)
1770 struct net_device *dev = priv->ndev;
1773 err = orinoco_hw_program_rids(priv);
1775 /* FIXME: what about netif_tx_lock */
1776 (void) __orinoco_set_multicast_list(dev);
1781 /* Ensures configuration changes are applied. May result in a reset.
1782 * The caller should hold priv->lock
1784 int orinoco_commit(struct orinoco_private *priv)
1786 struct net_device *dev = priv->ndev;
1787 hermes_t *hw = &priv->hw;
1790 if (priv->broken_disableport) {
1791 schedule_work(&priv->reset_work);
1795 err = hermes_disable_port(hw, 0);
1797 printk(KERN_WARNING "%s: Unable to disable port "
1798 "while reconfiguring card\n", dev->name);
1799 priv->broken_disableport = 1;
1803 err = __orinoco_commit(priv);
1805 printk(KERN_WARNING "%s: Unable to reconfigure card\n",
1810 err = hermes_enable_port(hw, 0);
1812 printk(KERN_WARNING "%s: Unable to enable port while reconfiguring card\n",
1819 printk(KERN_WARNING "%s: Resetting instead...\n", dev->name);
1820 schedule_work(&priv->reset_work);
1826 /********************************************************************/
1827 /* Interrupt handler */
1828 /********************************************************************/
1830 static void __orinoco_ev_tick(struct net_device *dev, hermes_t *hw)
1832 printk(KERN_DEBUG "%s: TICK\n", dev->name);
1835 static void __orinoco_ev_wterr(struct net_device *dev, hermes_t *hw)
1837 /* This seems to happen a fair bit under load, but ignoring it
1838 seems to work fine...*/
1839 printk(KERN_DEBUG "%s: MAC controller error (WTERR). Ignoring.\n",
1843 irqreturn_t orinoco_interrupt(int irq, void *dev_id)
1845 struct orinoco_private *priv = dev_id;
1846 struct net_device *dev = priv->ndev;
1847 hermes_t *hw = &priv->hw;
1848 int count = MAX_IRQLOOPS_PER_IRQ;
1850 /* These are used to detect a runaway interrupt situation.
1852 * If we get more than MAX_IRQLOOPS_PER_JIFFY iterations in a jiffy,
1853 * we panic and shut down the hardware
1855 /* jiffies value the last time we were called */
1856 static int last_irq_jiffy; /* = 0 */
1857 static int loops_this_jiffy; /* = 0 */
1858 unsigned long flags;
1860 if (orinoco_lock(priv, &flags) != 0) {
1861 /* If hw is unavailable - we don't know if the irq was
1866 evstat = hermes_read_regn(hw, EVSTAT);
1867 events = evstat & hw->inten;
1869 orinoco_unlock(priv, &flags);
1873 if (jiffies != last_irq_jiffy)
1874 loops_this_jiffy = 0;
1875 last_irq_jiffy = jiffies;
1877 while (events && count--) {
1878 if (++loops_this_jiffy > MAX_IRQLOOPS_PER_JIFFY) {
1879 printk(KERN_WARNING "%s: IRQ handler is looping too "
1880 "much! Resetting.\n", dev->name);
1881 /* Disable interrupts for now */
1882 hermes_set_irqmask(hw, 0);
1883 schedule_work(&priv->reset_work);
1887 /* Check the card hasn't been removed */
1888 if (!hermes_present(hw)) {
1889 DEBUG(0, "orinoco_interrupt(): card removed\n");
1893 if (events & HERMES_EV_TICK)
1894 __orinoco_ev_tick(dev, hw);
1895 if (events & HERMES_EV_WTERR)
1896 __orinoco_ev_wterr(dev, hw);
1897 if (events & HERMES_EV_INFDROP)
1898 __orinoco_ev_infdrop(dev, hw);
1899 if (events & HERMES_EV_INFO)
1900 __orinoco_ev_info(dev, hw);
1901 if (events & HERMES_EV_RX)
1902 __orinoco_ev_rx(dev, hw);
1903 if (events & HERMES_EV_TXEXC)
1904 __orinoco_ev_txexc(dev, hw);
1905 if (events & HERMES_EV_TX)
1906 __orinoco_ev_tx(dev, hw);
1907 if (events & HERMES_EV_ALLOC)
1908 __orinoco_ev_alloc(dev, hw);
1910 hermes_write_regn(hw, EVACK, evstat);
1912 evstat = hermes_read_regn(hw, EVSTAT);
1913 events = evstat & hw->inten;
1916 orinoco_unlock(priv, &flags);
1919 EXPORT_SYMBOL(orinoco_interrupt);
1921 /********************************************************************/
1922 /* Power management */
1923 /********************************************************************/
1924 #if defined(CONFIG_PM_SLEEP) && !defined(CONFIG_HERMES_CACHE_FW_ON_INIT)
1925 static int orinoco_pm_notifier(struct notifier_block *notifier,
1926 unsigned long pm_event,
1929 struct orinoco_private *priv = container_of(notifier,
1930 struct orinoco_private,
1933 /* All we need to do is cache the firmware before suspend, and
1934 * release it when we come out.
1936 * Only need to do this if we're downloading firmware. */
1937 if (!priv->do_fw_download)
1941 case PM_HIBERNATION_PREPARE:
1942 case PM_SUSPEND_PREPARE:
1943 orinoco_cache_fw(priv, 0);
1946 case PM_POST_RESTORE:
1947 /* Restore from hibernation failed. We need to clean
1948 * up in exactly the same way, so fall through. */
1949 case PM_POST_HIBERNATION:
1950 case PM_POST_SUSPEND:
1951 orinoco_uncache_fw(priv);
1954 case PM_RESTORE_PREPARE:
1962 static void orinoco_register_pm_notifier(struct orinoco_private *priv)
1964 priv->pm_notifier.notifier_call = orinoco_pm_notifier;
1965 register_pm_notifier(&priv->pm_notifier);
1968 static void orinoco_unregister_pm_notifier(struct orinoco_private *priv)
1970 unregister_pm_notifier(&priv->pm_notifier);
1972 #else /* !PM_SLEEP || HERMES_CACHE_FW_ON_INIT */
1973 #define orinoco_register_pm_notifier(priv) do { } while(0)
1974 #define orinoco_unregister_pm_notifier(priv) do { } while(0)
1977 /********************************************************************/
1978 /* Initialization */
1979 /********************************************************************/
1981 int orinoco_init(struct orinoco_private *priv)
1983 struct device *dev = priv->dev;
1984 struct wiphy *wiphy = priv_to_wiphy(priv);
1985 hermes_t *hw = &priv->hw;
1988 /* No need to lock, the hw_unavailable flag is already set in
1989 * alloc_orinocodev() */
1990 priv->nicbuf_size = IEEE80211_MAX_FRAME_LEN + ETH_HLEN;
1992 /* Initialize the firmware */
1993 err = hw->ops->init(hw);
1995 dev_err(dev, "Failed to initialize firmware (err = %d)\n",
2000 err = determine_fw_capabilities(priv, wiphy->fw_version,
2001 sizeof(wiphy->fw_version),
2002 &wiphy->hw_version);
2004 dev_err(dev, "Incompatible firmware, aborting\n");
2008 if (priv->do_fw_download) {
2009 #ifdef CONFIG_HERMES_CACHE_FW_ON_INIT
2010 orinoco_cache_fw(priv, 0);
2013 err = orinoco_download(priv);
2015 priv->do_fw_download = 0;
2017 /* Check firmware version again */
2018 err = determine_fw_capabilities(priv, wiphy->fw_version,
2019 sizeof(wiphy->fw_version),
2020 &wiphy->hw_version);
2022 dev_err(dev, "Incompatible firmware, aborting\n");
2027 if (priv->has_port3)
2028 dev_info(dev, "Ad-hoc demo mode supported\n");
2030 dev_info(dev, "IEEE standard IBSS ad-hoc mode supported\n");
2032 dev_info(dev, "WEP supported, %s-bit key\n",
2033 priv->has_big_wep ? "104" : "40");
2034 if (priv->has_wpa) {
2035 dev_info(dev, "WPA-PSK supported\n");
2036 if (orinoco_mic_init(priv)) {
2037 dev_err(dev, "Failed to setup MIC crypto algorithm. "
2038 "Disabling WPA support\n");
2043 err = orinoco_hw_read_card_settings(priv, wiphy->perm_addr);
2047 err = orinoco_hw_allocate_fid(priv);
2049 dev_err(dev, "Failed to allocate NIC buffer!\n");
2053 /* Set up the default configuration */
2054 priv->iw_mode = NL80211_IFTYPE_STATION;
2055 /* By default use IEEE/IBSS ad-hoc mode if we have it */
2056 priv->prefer_port3 = priv->has_port3 && (!priv->has_ibss);
2057 set_port_type(priv);
2058 priv->channel = 0; /* use firmware default */
2060 priv->promiscuous = 0;
2061 priv->encode_alg = ORINOCO_ALG_NONE;
2063 priv->wpa_enabled = 0;
2064 priv->tkip_cm_active = 0;
2066 priv->wpa_ie_len = 0;
2067 priv->wpa_ie = NULL;
2069 if (orinoco_wiphy_register(wiphy)) {
2074 /* Make the hardware available, as long as it hasn't been
2075 * removed elsewhere (e.g. by PCMCIA hot unplug) */
2076 orinoco_lock_irq(priv);
2077 priv->hw_unavailable--;
2078 orinoco_unlock_irq(priv);
2080 dev_dbg(dev, "Ready\n");
2085 EXPORT_SYMBOL(orinoco_init);
2087 static const struct net_device_ops orinoco_netdev_ops = {
2088 .ndo_open = orinoco_open,
2089 .ndo_stop = orinoco_stop,
2090 .ndo_start_xmit = orinoco_xmit,
2091 .ndo_set_multicast_list = orinoco_set_multicast_list,
2092 .ndo_change_mtu = orinoco_change_mtu,
2093 .ndo_set_mac_address = eth_mac_addr,
2094 .ndo_validate_addr = eth_validate_addr,
2095 .ndo_tx_timeout = orinoco_tx_timeout,
2096 .ndo_get_stats = orinoco_get_stats,
2099 /* Allocate private data.
2101 * This driver has a number of structures associated with it
2102 * netdev - Net device structure for each network interface
2103 * wiphy - structure associated with wireless phy
2104 * wireless_dev (wdev) - structure for each wireless interface
2105 * hw - structure for hermes chip info
2106 * card - card specific structure for use by the card driver
2107 * (airport, orinoco_cs)
2108 * priv - orinoco private data
2109 * device - generic linux device structure
2111 * +---------+ +---------+
2112 * | wiphy | | netdev |
2113 * | +-------+ | +-------+
2114 * | | priv | | | wdev |
2115 * | | +-----+ +-+-------+
2121 * priv has a link to netdev and device
2122 * wdev has a link to wiphy
2124 struct orinoco_private
2125 *alloc_orinocodev(int sizeof_card,
2126 struct device *device,
2127 int (*hard_reset)(struct orinoco_private *),
2128 int (*stop_fw)(struct orinoco_private *, int))
2130 struct orinoco_private *priv;
2131 struct wiphy *wiphy;
2134 * NOTE: We only support a single virtual interface
2135 * but this may change when monitor mode is added
2137 wiphy = wiphy_new(&orinoco_cfg_ops,
2138 sizeof(struct orinoco_private) + sizeof_card);
2142 priv = wiphy_priv(wiphy);
2146 priv->card = (void *)((unsigned long)priv
2147 + sizeof(struct orinoco_private));
2151 orinoco_wiphy_init(wiphy);
2154 priv->wireless_data.spy_data = &priv->spy_data;
2157 /* Set up default callbacks */
2158 priv->hard_reset = hard_reset;
2159 priv->stop_fw = stop_fw;
2161 spin_lock_init(&priv->lock);
2163 priv->hw_unavailable = 1; /* orinoco_init() must clear this
2164 * before anything else touches the
2166 INIT_WORK(&priv->reset_work, orinoco_reset);
2167 INIT_WORK(&priv->join_work, orinoco_join_ap);
2168 INIT_WORK(&priv->wevent_work, orinoco_send_wevents);
2170 INIT_LIST_HEAD(&priv->rx_list);
2171 tasklet_init(&priv->rx_tasklet, orinoco_rx_isr_tasklet,
2172 (unsigned long) priv);
2174 spin_lock_init(&priv->scan_lock);
2175 INIT_LIST_HEAD(&priv->scan_list);
2176 INIT_WORK(&priv->process_scan, orinoco_process_scan_results);
2178 priv->last_linkstatus = 0xffff;
2180 #if defined(CONFIG_HERMES_CACHE_FW_ON_INIT) || defined(CONFIG_PM_SLEEP)
2181 priv->cached_pri_fw = NULL;
2182 priv->cached_fw = NULL;
2185 /* Register PM notifiers */
2186 orinoco_register_pm_notifier(priv);
2190 EXPORT_SYMBOL(alloc_orinocodev);
2192 /* We can only support a single interface. We provide a separate
2193 * function to set it up to distinguish between hardware
2194 * initialisation and interface setup.
2196 * The base_addr and irq parameters are passed on to netdev for use
2199 int orinoco_if_add(struct orinoco_private *priv,
2200 unsigned long base_addr,
2202 const struct net_device_ops *ops)
2204 struct wiphy *wiphy = priv_to_wiphy(priv);
2205 struct wireless_dev *wdev;
2206 struct net_device *dev;
2209 dev = alloc_etherdev(sizeof(struct wireless_dev));
2214 /* Initialise wireless_dev */
2215 wdev = netdev_priv(dev);
2216 wdev->wiphy = wiphy;
2217 wdev->iftype = NL80211_IFTYPE_STATION;
2219 /* Setup / override net_device fields */
2220 dev->ieee80211_ptr = wdev;
2221 dev->watchdog_timeo = HZ; /* 1 second timeout */
2222 dev->wireless_handlers = &orinoco_handler_def;
2224 dev->wireless_data = &priv->wireless_data;
2226 /* Default to standard ops if not set */
2228 dev->netdev_ops = ops;
2230 dev->netdev_ops = &orinoco_netdev_ops;
2232 /* we use the default eth_mac_addr for setting the MAC addr */
2234 /* Reserve space in skb for the SNAP header */
2235 dev->hard_header_len += ENCAPS_OVERHEAD;
2237 netif_carrier_off(dev);
2239 memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
2240 memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
2242 dev->base_addr = base_addr;
2245 SET_NETDEV_DEV(dev, priv->dev);
2246 ret = register_netdev(dev);
2252 /* Report what we've done */
2253 dev_dbg(priv->dev, "Registerred interface %s.\n", dev->name);
2261 EXPORT_SYMBOL(orinoco_if_add);
2263 void orinoco_if_del(struct orinoco_private *priv)
2265 struct net_device *dev = priv->ndev;
2267 unregister_netdev(dev);
2270 EXPORT_SYMBOL(orinoco_if_del);
2272 void free_orinocodev(struct orinoco_private *priv)
2274 struct wiphy *wiphy = priv_to_wiphy(priv);
2275 struct orinoco_rx_data *rx_data, *temp;
2276 struct orinoco_scan_data *sd, *sdtemp;
2278 wiphy_unregister(wiphy);
2280 /* If the tasklet is scheduled when we call tasklet_kill it
2281 * will run one final time. However the tasklet will only
2282 * drain priv->rx_list if the hw is still available. */
2283 tasklet_kill(&priv->rx_tasklet);
2285 /* Explicitly drain priv->rx_list */
2286 list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) {
2287 list_del(&rx_data->list);
2289 dev_kfree_skb(rx_data->skb);
2290 kfree(rx_data->desc);
2294 cancel_work_sync(&priv->process_scan);
2295 /* Explicitly drain priv->scan_list */
2296 list_for_each_entry_safe(sd, sdtemp, &priv->scan_list, list) {
2297 list_del(&sd->list);
2299 if ((sd->len > 0) && sd->buf)
2304 orinoco_unregister_pm_notifier(priv);
2305 orinoco_uncache_fw(priv);
2307 priv->wpa_ie_len = 0;
2308 kfree(priv->wpa_ie);
2309 orinoco_mic_free(priv);
2312 EXPORT_SYMBOL(free_orinocodev);
2314 int orinoco_up(struct orinoco_private *priv)
2316 struct net_device *dev = priv->ndev;
2317 unsigned long flags;
2320 priv->hw.ops->lock_irqsave(&priv->lock, &flags);
2322 err = orinoco_reinit_firmware(priv);
2324 printk(KERN_ERR "%s: Error %d re-initializing firmware\n",
2329 netif_device_attach(dev);
2330 priv->hw_unavailable--;
2332 if (priv->open && !priv->hw_unavailable) {
2333 err = __orinoco_up(priv);
2335 printk(KERN_ERR "%s: Error %d restarting card\n",
2340 priv->hw.ops->unlock_irqrestore(&priv->lock, &flags);
2344 EXPORT_SYMBOL(orinoco_up);
2346 void orinoco_down(struct orinoco_private *priv)
2348 struct net_device *dev = priv->ndev;
2349 unsigned long flags;
2352 priv->hw.ops->lock_irqsave(&priv->lock, &flags);
2353 err = __orinoco_down(priv);
2355 printk(KERN_WARNING "%s: Error %d downing interface\n",
2358 netif_device_detach(dev);
2359 priv->hw_unavailable++;
2360 priv->hw.ops->unlock_irqrestore(&priv->lock, &flags);
2362 EXPORT_SYMBOL(orinoco_down);
2364 /********************************************************************/
2365 /* Module initialization */
2366 /********************************************************************/
2368 /* Can't be declared "const" or the whole __initdata section will
2370 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
2371 " (David Gibson <hermes@gibson.dropbear.id.au>, "
2372 "Pavel Roskin <proski@gnu.org>, et al)";
2374 static int __init init_orinoco(void)
2376 printk(KERN_DEBUG "%s\n", version);
2380 static void __exit exit_orinoco(void)
2384 module_init(init_orinoco);
2385 module_exit(exit_orinoco);