blob: 9fb77d0319f5de9ffde985de3691d0b4554cf152 [file] [log] [blame]
David Kilroy47445cb2009-02-04 23:05:48 +00001/* main.c - (formerly known as dldwd_cs.c, orinoco_cs.c and orinoco.c)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 *
3 * A driver for Hermes or Prism 2 chipset based PCMCIA wireless
4 * adaptors, with Lucent/Agere, Intersil or Symbol firmware.
5 *
6 * Current maintainers (as of 29 September 2003) are:
Pavel Roskin933d5942011-07-13 11:19:57 -04007 * Pavel Roskin <proski AT gnu.org>
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 * and David Gibson <hermes AT gibson.dropbear.id.au>
9 *
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
15 *
16 * Based on dummy_cs.c 1.27 2000/06/12 21:27:25
17 *
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/
21 *
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/
26 *
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.
31 *
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
35 * Reserved.
36 *
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. */
47
48/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 * TODO
Linus Torvalds1da177e2005-04-16 15:20:36 -070050 * o Handle de-encapsulation within network layer, provide 802.11
51 * headers (patch from Thomas 'Dent' Mirlacher)
Linus Torvalds1da177e2005-04-16 15:20:36 -070052 * 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.
57 */
58
59/* Locking and synchronization:
60 *
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.
66 *
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).
75 */
76
77#define DRIVER_NAME "orinoco"
78
Linus Torvalds1da177e2005-04-16 15:20:36 -070079#include <linux/module.h>
80#include <linux/kernel.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090081#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070082#include <linux/init.h>
David Kilroyd03032a2008-08-21 23:28:02 +010083#include <linux/delay.h>
David Kilroy8e638262009-06-18 23:21:24 +010084#include <linux/device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070085#include <linux/netdevice.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070086#include <linux/etherdevice.h>
David Kilroy39d1ffe2008-11-22 10:37:28 +000087#include <linux/suspend.h>
Pavel Roskin9c974fb2006-08-15 20:45:03 -040088#include <linux/if_arp.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070089#include <linux/wireless.h>
Johannes Berg2c7060022008-10-30 22:09:54 +010090#include <linux/ieee80211.h>
Christoph Hellwig620554e2005-06-19 01:27:33 +020091#include <net/iw_handler.h>
David Kilroyea60a6a2009-06-18 23:21:26 +010092#include <net/cfg80211.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070093
Linus Torvalds1da177e2005-04-16 15:20:36 -070094#include "hermes_rid.h"
David Kilroy3994d502008-08-21 23:27:54 +010095#include "hermes_dld.h"
David Kilroy712a4342009-02-04 23:05:55 +000096#include "hw.h"
David Kilroyfb791b12009-02-04 23:05:50 +000097#include "scan.h"
David Kilroy4adb4742009-02-04 23:05:51 +000098#include "mic.h"
David Kilroy37a2e562009-02-04 23:05:52 +000099#include "fw.h"
David Kilroycb1576a2009-02-04 23:05:56 +0000100#include "wext.h"
David Kilroyea60a6a2009-06-18 23:21:26 +0100101#include "cfg.h"
David Kilroycb1576a2009-02-04 23:05:56 +0000102#include "main.h"
David Kilroyfb791b12009-02-04 23:05:50 +0000103
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104#include "orinoco.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105
106/********************************************************************/
107/* Module information */
108/********************************************************************/
109
David Kilroyb2f30a02009-02-04 23:05:46 +0000110MODULE_AUTHOR("Pavel Roskin <proski@gnu.org> & "
111 "David Gibson <hermes@gibson.dropbear.id.au>");
112MODULE_DESCRIPTION("Driver for Lucent Orinoco, Prism II based "
113 "and similar wireless cards");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114MODULE_LICENSE("Dual MPL/GPL");
115
116/* Level of debugging. Used in the macros in orinoco.h */
117#ifdef ORINOCO_DEBUG
118int orinoco_debug = ORINOCO_DEBUG;
David Kilroy21312662009-02-04 23:05:47 +0000119EXPORT_SYMBOL(orinoco_debug);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120module_param(orinoco_debug, int, 0644);
121MODULE_PARM_DESC(orinoco_debug, "Debug level");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122#endif
123
Rusty Russelleb939922011-12-19 14:08:01 +0000124static bool suppress_linkstatus; /* = 0 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125module_param(suppress_linkstatus, bool, 0644);
126MODULE_PARM_DESC(suppress_linkstatus, "Don't log link status changes");
David Kilroyb2f30a02009-02-04 23:05:46 +0000127
David Gibson7bb7c3a2005-05-12 20:02:10 -0400128static int ignore_disconnect; /* = 0 */
129module_param(ignore_disconnect, int, 0644);
David Kilroyb2f30a02009-02-04 23:05:46 +0000130MODULE_PARM_DESC(ignore_disconnect,
131 "Don't report lost link to the network layer");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132
David Kilroycb1576a2009-02-04 23:05:56 +0000133int force_monitor; /* = 0 */
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200134module_param(force_monitor, int, 0644);
135MODULE_PARM_DESC(force_monitor, "Allow monitor mode for all firmware versions");
136
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137/********************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138/* Internal constants */
139/********************************************************************/
140
Christoph Hellwig95dd91f2005-06-19 01:27:56 +0200141/* 802.2 LLC/SNAP header used for Ethernet encapsulation over 802.11 */
142static const u8 encaps_hdr[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
143#define ENCAPS_OVERHEAD (sizeof(encaps_hdr) + 2)
144
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145#define ORINOCO_MIN_MTU 256
Johannes Berg2c7060022008-10-30 22:09:54 +0100146#define ORINOCO_MAX_MTU (IEEE80211_MAX_DATA_LEN - ENCAPS_OVERHEAD)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148#define MAX_IRQLOOPS_PER_IRQ 10
Pavel Roskin933d5942011-07-13 11:19:57 -0400149#define MAX_IRQLOOPS_PER_JIFFY (20000 / HZ) /* Based on a guestimate of
150 * how many events the
151 * device could
152 * legitimately generate */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153
154#define DUMMY_FID 0xFFFF
155
156/*#define MAX_MULTICAST(priv) (priv->firmware_type == FIRMWARE_TYPE_AGERE ? \
157 HERMES_MAX_MULTICAST : 0)*/
158#define MAX_MULTICAST(priv) (HERMES_MAX_MULTICAST)
159
Pavel Roskin933d5942011-07-13 11:19:57 -0400160#define ORINOCO_INTEN (HERMES_EV_RX | HERMES_EV_ALLOC \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 | HERMES_EV_TX | HERMES_EV_TXEXC \
162 | HERMES_EV_WTERR | HERMES_EV_INFO \
David Kilroya94e8422009-02-04 23:05:44 +0000163 | HERMES_EV_INFDROP)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164
165/********************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166/* Data types */
167/********************************************************************/
168
Pavel Roskin30c2d3b2006-04-07 04:10:34 -0400169/* Beginning of the Tx descriptor, used in TxExc handling */
170struct hermes_txexc_data {
171 struct hermes_tx_descriptor desc;
Pavel Roskind133ae42005-09-23 04:18:06 -0400172 __le16 frame_ctl;
173 __le16 duration_id;
Christoph Hellwig95dd91f2005-06-19 01:27:56 +0200174 u8 addr1[ETH_ALEN];
Eric Dumazetba2d3582010-06-02 18:10:09 +0000175} __packed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176
Christoph Hellwig8f2abf42005-06-19 01:28:02 +0200177/* Rx frame header except compatibility 802.3 header */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178struct hermes_rx_descriptor {
Christoph Hellwig8f2abf42005-06-19 01:28:02 +0200179 /* Control */
Pavel Roskind133ae42005-09-23 04:18:06 -0400180 __le16 status;
181 __le32 time;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 u8 silence;
183 u8 signal;
184 u8 rate;
185 u8 rxflow;
Pavel Roskind133ae42005-09-23 04:18:06 -0400186 __le32 reserved;
Christoph Hellwig8f2abf42005-06-19 01:28:02 +0200187
188 /* 802.11 header */
Pavel Roskind133ae42005-09-23 04:18:06 -0400189 __le16 frame_ctl;
190 __le16 duration_id;
Christoph Hellwig8f2abf42005-06-19 01:28:02 +0200191 u8 addr1[ETH_ALEN];
192 u8 addr2[ETH_ALEN];
193 u8 addr3[ETH_ALEN];
Pavel Roskind133ae42005-09-23 04:18:06 -0400194 __le16 seq_ctl;
Christoph Hellwig8f2abf42005-06-19 01:28:02 +0200195 u8 addr4[ETH_ALEN];
196
197 /* Data length */
Pavel Roskind133ae42005-09-23 04:18:06 -0400198 __le16 data_len;
Eric Dumazetba2d3582010-06-02 18:10:09 +0000199} __packed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200
David Kilroy47166792009-01-07 00:43:54 +0000201struct orinoco_rx_data {
202 struct hermes_rx_descriptor *desc;
203 struct sk_buff *skb;
204 struct list_head list;
205};
206
David Kilroyc63cdbe2009-06-18 23:21:33 +0100207struct orinoco_scan_data {
208 void *buf;
209 size_t len;
210 int type;
211 struct list_head list;
212};
213
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214/********************************************************************/
215/* Function prototypes */
216/********************************************************************/
217
David Kilroy721aa2f2009-06-18 23:21:31 +0100218static int __orinoco_set_multicast_list(struct net_device *dev);
David Kilroy6415f7d2009-06-18 23:21:30 +0100219static int __orinoco_up(struct orinoco_private *priv);
220static int __orinoco_down(struct orinoco_private *priv);
David Kilroy721aa2f2009-06-18 23:21:31 +0100221static int __orinoco_commit(struct orinoco_private *priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222
223/********************************************************************/
224/* Internal helper functions */
225/********************************************************************/
226
David Kilroycb1576a2009-02-04 23:05:56 +0000227void set_port_type(struct orinoco_private *priv)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228{
229 switch (priv->iw_mode) {
David Kilroy5217c572009-06-18 23:21:32 +0100230 case NL80211_IFTYPE_STATION:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 priv->port_type = 1;
232 priv->createibss = 0;
233 break;
David Kilroy5217c572009-06-18 23:21:32 +0100234 case NL80211_IFTYPE_ADHOC:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235 if (priv->prefer_port3) {
236 priv->port_type = 3;
237 priv->createibss = 0;
238 } else {
239 priv->port_type = priv->ibss_port;
240 priv->createibss = 1;
241 }
242 break;
David Kilroy5217c572009-06-18 23:21:32 +0100243 case NL80211_IFTYPE_MONITOR:
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200244 priv->port_type = 3;
245 priv->createibss = 0;
246 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 default:
248 printk(KERN_ERR "%s: Invalid priv->iw_mode in set_port_type()\n",
249 priv->ndev->name);
250 }
251}
252
David Kilroy3994d502008-08-21 23:27:54 +0100253/********************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254/* Device methods */
255/********************************************************************/
256
David Kilroy593ef092010-05-01 14:05:39 +0100257int orinoco_open(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258{
David Kilroyea60a6a2009-06-18 23:21:26 +0100259 struct orinoco_private *priv = ndev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260 unsigned long flags;
261 int err;
262
263 if (orinoco_lock(priv, &flags) != 0)
264 return -EBUSY;
265
David Kilroya2608362009-06-18 23:21:23 +0100266 err = __orinoco_up(priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267
David Kilroya94e8422009-02-04 23:05:44 +0000268 if (!err)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 priv->open = 1;
270
271 orinoco_unlock(priv, &flags);
272
273 return err;
274}
David Kilroy593ef092010-05-01 14:05:39 +0100275EXPORT_SYMBOL(orinoco_open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276
David Kilroy593ef092010-05-01 14:05:39 +0100277int orinoco_stop(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278{
David Kilroyea60a6a2009-06-18 23:21:26 +0100279 struct orinoco_private *priv = ndev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280 int err = 0;
281
282 /* We mustn't use orinoco_lock() here, because we need to be
283 able to close the interface even if hw_unavailable is set
284 (e.g. as we're released after a PC Card removal) */
David Kilroybcad6e82010-05-01 14:05:40 +0100285 orinoco_lock_irq(priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286
287 priv->open = 0;
288
David Kilroya2608362009-06-18 23:21:23 +0100289 err = __orinoco_down(priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290
David Kilroybcad6e82010-05-01 14:05:40 +0100291 orinoco_unlock_irq(priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292
293 return err;
294}
David Kilroy593ef092010-05-01 14:05:39 +0100295EXPORT_SYMBOL(orinoco_stop);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296
David Kilroy593ef092010-05-01 14:05:39 +0100297struct net_device_stats *orinoco_get_stats(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298{
David Kilroyea60a6a2009-06-18 23:21:26 +0100299 struct orinoco_private *priv = ndev_priv(dev);
David Kilroy6fe9deb2009-02-04 23:05:43 +0000300
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301 return &priv->stats;
302}
David Kilroy593ef092010-05-01 14:05:39 +0100303EXPORT_SYMBOL(orinoco_get_stats);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304
David Kilroy593ef092010-05-01 14:05:39 +0100305void orinoco_set_multicast_list(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306{
David Kilroyea60a6a2009-06-18 23:21:26 +0100307 struct orinoco_private *priv = ndev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 unsigned long flags;
309
310 if (orinoco_lock(priv, &flags) != 0) {
311 printk(KERN_DEBUG "%s: orinoco_set_multicast_list() "
312 "called when hw_unavailable\n", dev->name);
313 return;
314 }
315
316 __orinoco_set_multicast_list(dev);
317 orinoco_unlock(priv, &flags);
318}
David Kilroy593ef092010-05-01 14:05:39 +0100319EXPORT_SYMBOL(orinoco_set_multicast_list);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320
David Kilroy593ef092010-05-01 14:05:39 +0100321int orinoco_change_mtu(struct net_device *dev, int new_mtu)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322{
David Kilroyea60a6a2009-06-18 23:21:26 +0100323 struct orinoco_private *priv = ndev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324
David Kilroya94e8422009-02-04 23:05:44 +0000325 if ((new_mtu < ORINOCO_MIN_MTU) || (new_mtu > ORINOCO_MAX_MTU))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 return -EINVAL;
327
Johannes Berg2c7060022008-10-30 22:09:54 +0100328 /* MTU + encapsulation + header length */
David Kilroya94e8422009-02-04 23:05:44 +0000329 if ((new_mtu + ENCAPS_OVERHEAD + sizeof(struct ieee80211_hdr)) >
330 (priv->nicbuf_size - ETH_HLEN))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331 return -EINVAL;
332
333 dev->mtu = new_mtu;
334
335 return 0;
336}
David Kilroy593ef092010-05-01 14:05:39 +0100337EXPORT_SYMBOL(orinoco_change_mtu);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338
339/********************************************************************/
340/* Tx path */
341/********************************************************************/
342
David Kilroybac6faf2010-05-04 22:54:41 +0100343/* Add encapsulation and MIC to the existing SKB.
344 * The main xmit routine will then send the whole lot to the card.
345 * Need 8 bytes headroom
346 * Need 8 bytes tailroom
347 *
348 * With encapsulated ethernet II frame
349 * --------
350 * 803.3 header (14 bytes)
351 * dst[6]
352 * -------- src[6]
353 * 803.3 header (14 bytes) len[2]
354 * dst[6] 803.2 header (8 bytes)
355 * src[6] encaps[6]
356 * len[2] <- leave alone -> len[2]
357 * -------- -------- <-- 0
358 * Payload Payload
359 * ... ...
360 *
361 * -------- --------
362 * MIC (8 bytes)
363 * --------
364 *
365 * returns 0 on success, -ENOMEM on error.
366 */
367int orinoco_process_xmit_skb(struct sk_buff *skb,
368 struct net_device *dev,
369 struct orinoco_private *priv,
370 int *tx_control,
371 u8 *mic_buf)
372{
373 struct orinoco_tkip_key *key;
374 struct ethhdr *eh;
375 int do_mic;
376
377 key = (struct orinoco_tkip_key *) priv->keys[priv->tx_key].key;
378
379 do_mic = ((priv->encode_alg == ORINOCO_ALG_TKIP) &&
380 (key != NULL));
381
382 if (do_mic)
383 *tx_control |= (priv->tx_key << HERMES_MIC_KEY_ID_SHIFT) |
384 HERMES_TXCTRL_MIC;
385
386 eh = (struct ethhdr *)skb->data;
387
388 /* Encapsulate Ethernet-II frames */
389 if (ntohs(eh->h_proto) > ETH_DATA_LEN) { /* Ethernet-II frame */
390 struct header_struct {
391 struct ethhdr eth; /* 802.3 header */
392 u8 encap[6]; /* 802.2 header */
Eric Dumazetba2d3582010-06-02 18:10:09 +0000393 } __packed hdr;
David Kilroybac6faf2010-05-04 22:54:41 +0100394 int len = skb->len + sizeof(encaps_hdr) - (2 * ETH_ALEN);
395
396 if (skb_headroom(skb) < ENCAPS_OVERHEAD) {
397 if (net_ratelimit())
398 printk(KERN_ERR
399 "%s: Not enough headroom for 802.2 headers %d\n",
400 dev->name, skb_headroom(skb));
401 return -ENOMEM;
402 }
403
404 /* Fill in new header */
405 memcpy(&hdr.eth, eh, 2 * ETH_ALEN);
406 hdr.eth.h_proto = htons(len);
407 memcpy(hdr.encap, encaps_hdr, sizeof(encaps_hdr));
408
409 /* Make room for the new header, and copy it in */
410 eh = (struct ethhdr *) skb_push(skb, ENCAPS_OVERHEAD);
411 memcpy(eh, &hdr, sizeof(hdr));
412 }
413
414 /* Calculate Michael MIC */
415 if (do_mic) {
416 size_t len = skb->len - ETH_HLEN;
417 u8 *mic = &mic_buf[0];
418
419 /* Have to write to an even address, so copy the spare
420 * byte across */
421 if (skb->len % 2) {
422 *mic = skb->data[skb->len - 1];
423 mic++;
424 }
425
426 orinoco_mic(priv->tx_tfm_mic, key->tx_mic,
427 eh->h_dest, eh->h_source, 0 /* priority */,
428 skb->data + ETH_HLEN,
429 len, mic);
430 }
431
432 return 0;
433}
434EXPORT_SYMBOL(orinoco_process_xmit_skb);
435
Stephen Hemmingerd0cf9c02009-08-31 19:50:57 +0000436static netdev_tx_t orinoco_xmit(struct sk_buff *skb, struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437{
David Kilroyea60a6a2009-06-18 23:21:26 +0100438 struct orinoco_private *priv = ndev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 struct net_device_stats *stats = &priv->stats;
Pavel Roskin933d5942011-07-13 11:19:57 -0400440 struct hermes *hw = &priv->hw;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 int err = 0;
442 u16 txfid = priv->txfid;
David Kilroy6eecad72008-08-21 23:27:56 +0100443 int tx_control;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 unsigned long flags;
Pavel Roskin933d5942011-07-13 11:19:57 -0400445 u8 mic_buf[MICHAEL_MIC_LEN + 1];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446
David Kilroya94e8422009-02-04 23:05:44 +0000447 if (!netif_running(dev)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 printk(KERN_ERR "%s: Tx on stopped device!\n",
449 dev->name);
Pavel Roskinb34b8672006-04-07 04:10:36 -0400450 return NETDEV_TX_BUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451 }
David Kilroy6fe9deb2009-02-04 23:05:43 +0000452
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 if (netif_queue_stopped(dev)) {
David Kilroy6fe9deb2009-02-04 23:05:43 +0000454 printk(KERN_DEBUG "%s: Tx while transmitter busy!\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 dev->name);
Pavel Roskinb34b8672006-04-07 04:10:36 -0400456 return NETDEV_TX_BUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457 }
David Kilroy6fe9deb2009-02-04 23:05:43 +0000458
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 if (orinoco_lock(priv, &flags) != 0) {
460 printk(KERN_ERR "%s: orinoco_xmit() called while hw_unavailable\n",
461 dev->name);
Pavel Roskinb34b8672006-04-07 04:10:36 -0400462 return NETDEV_TX_BUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 }
464
David Kilroy5217c572009-06-18 23:21:32 +0100465 if (!netif_carrier_ok(dev) ||
466 (priv->iw_mode == NL80211_IFTYPE_MONITOR)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467 /* Oops, the firmware hasn't established a connection,
David Kilroy6fe9deb2009-02-04 23:05:43 +0000468 silently drop the packet (this seems to be the
469 safest approach). */
Pavel Roskin470e2aa2006-04-07 04:10:43 -0400470 goto drop;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471 }
472
Pavel Roskin8d5be082006-04-07 04:10:41 -0400473 /* Check packet length */
Pavel Roskina28dc812006-04-07 04:10:45 -0400474 if (skb->len < ETH_HLEN)
Pavel Roskin470e2aa2006-04-07 04:10:43 -0400475 goto drop;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476
David Kilroy6eecad72008-08-21 23:27:56 +0100477 tx_control = HERMES_TXCTRL_TX_OK | HERMES_TXCTRL_TX_EX;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478
David Kilroybac6faf2010-05-04 22:54:41 +0100479 err = orinoco_process_xmit_skb(skb, dev, priv, &tx_control,
480 &mic_buf[0]);
481 if (err)
482 goto drop;
David Kilroy23edcc42008-08-21 23:28:05 +0100483
David Kilroy6eecad72008-08-21 23:27:56 +0100484 if (priv->has_alt_txcntl) {
485 /* WPA enabled firmwares have tx_cntl at the end of
486 * the 802.11 header. So write zeroed descriptor and
487 * 802.11 header at the same time
488 */
489 char desc[HERMES_802_3_OFFSET];
490 __le16 *txcntl = (__le16 *) &desc[HERMES_TXCNTL2_OFFSET];
491
492 memset(&desc, 0, sizeof(desc));
493
494 *txcntl = cpu_to_le16(tx_control);
David Kilroyb42f2072010-05-01 14:05:38 +0100495 err = hw->ops->bap_pwrite(hw, USER_BAP, &desc, sizeof(desc),
496 txfid, 0);
David Kilroy6eecad72008-08-21 23:27:56 +0100497 if (err) {
498 if (net_ratelimit())
499 printk(KERN_ERR "%s: Error %d writing Tx "
500 "descriptor to BAP\n", dev->name, err);
501 goto busy;
502 }
503 } else {
504 struct hermes_tx_descriptor desc;
505
506 memset(&desc, 0, sizeof(desc));
507
508 desc.tx_control = cpu_to_le16(tx_control);
David Kilroyb42f2072010-05-01 14:05:38 +0100509 err = hw->ops->bap_pwrite(hw, USER_BAP, &desc, sizeof(desc),
510 txfid, 0);
David Kilroy6eecad72008-08-21 23:27:56 +0100511 if (err) {
512 if (net_ratelimit())
513 printk(KERN_ERR "%s: Error %d writing Tx "
514 "descriptor to BAP\n", dev->name, err);
515 goto busy;
516 }
517
518 /* Clear the 802.11 header and data length fields - some
519 * firmwares (e.g. Lucent/Agere 8.xx) appear to get confused
520 * if this isn't done. */
521 hermes_clear_words(hw, HERMES_DATA0,
522 HERMES_802_3_OFFSET - HERMES_802_11_OFFSET);
523 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524
David Kilroyb42f2072010-05-01 14:05:38 +0100525 err = hw->ops->bap_pwrite(hw, USER_BAP, skb->data, skb->len,
526 txfid, HERMES_802_3_OFFSET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 if (err) {
528 printk(KERN_ERR "%s: Error %d writing packet to BAP\n",
529 dev->name, err);
Pavel Roskin470e2aa2006-04-07 04:10:43 -0400530 goto busy;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 }
532
David Kilroybac6faf2010-05-04 22:54:41 +0100533 if (tx_control & HERMES_TXCTRL_MIC) {
534 size_t offset = HERMES_802_3_OFFSET + skb->len;
535 size_t len = MICHAEL_MIC_LEN;
David Kilroy23edcc42008-08-21 23:28:05 +0100536
David Kilroybac6faf2010-05-04 22:54:41 +0100537 if (offset % 2) {
538 offset--;
539 len++;
David Kilroy23edcc42008-08-21 23:28:05 +0100540 }
David Kilroyb42f2072010-05-01 14:05:38 +0100541 err = hw->ops->bap_pwrite(hw, USER_BAP, &mic_buf[0], len,
David Kilroybac6faf2010-05-04 22:54:41 +0100542 txfid, offset);
David Kilroy23edcc42008-08-21 23:28:05 +0100543 if (err) {
544 printk(KERN_ERR "%s: Error %d writing MIC to BAP\n",
545 dev->name, err);
546 goto busy;
547 }
548 }
549
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550 /* Finally, we actually initiate the send */
551 netif_stop_queue(dev);
552
David Kilroyb42f2072010-05-01 14:05:38 +0100553 err = hw->ops->cmd_wait(hw, HERMES_CMD_TX | HERMES_CMD_RECL,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 txfid, NULL);
555 if (err) {
556 netif_start_queue(dev);
Andrew Mortonc367c212005-10-19 21:23:44 -0700557 if (net_ratelimit())
558 printk(KERN_ERR "%s: Error %d transmitting packet\n",
559 dev->name, err);
Pavel Roskin470e2aa2006-04-07 04:10:43 -0400560 goto busy;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561 }
562
David Kilroy23edcc42008-08-21 23:28:05 +0100563 stats->tx_bytes += HERMES_802_3_OFFSET + skb->len;
Pavel Roskin470e2aa2006-04-07 04:10:43 -0400564 goto ok;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565
Pavel Roskin470e2aa2006-04-07 04:10:43 -0400566 drop:
567 stats->tx_errors++;
568 stats->tx_dropped++;
569
570 ok:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571 orinoco_unlock(priv, &flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572 dev_kfree_skb(skb);
Pavel Roskinb34b8672006-04-07 04:10:36 -0400573 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574
Pavel Roskin470e2aa2006-04-07 04:10:43 -0400575 busy:
Jiri Benc2c1bd262006-04-07 04:10:47 -0400576 if (err == -EIO)
577 schedule_work(&priv->reset_work);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 orinoco_unlock(priv, &flags);
Pavel Roskinb34b8672006-04-07 04:10:36 -0400579 return NETDEV_TX_BUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580}
581
Pavel Roskin933d5942011-07-13 11:19:57 -0400582static void __orinoco_ev_alloc(struct net_device *dev, struct hermes *hw)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583{
David Kilroyea60a6a2009-06-18 23:21:26 +0100584 struct orinoco_private *priv = ndev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585 u16 fid = hermes_read_regn(hw, ALLOCFID);
586
587 if (fid != priv->txfid) {
588 if (fid != DUMMY_FID)
589 printk(KERN_WARNING "%s: Allocate event on unexpected fid (%04X)\n",
590 dev->name, fid);
591 return;
592 }
593
594 hermes_write_regn(hw, ALLOCFID, DUMMY_FID);
595}
596
Pavel Roskin933d5942011-07-13 11:19:57 -0400597static void __orinoco_ev_tx(struct net_device *dev, struct hermes *hw)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598{
David Kilroyea60a6a2009-06-18 23:21:26 +0100599 struct orinoco_private *priv = ndev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600 struct net_device_stats *stats = &priv->stats;
601
602 stats->tx_packets++;
603
604 netif_wake_queue(dev);
605
606 hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID);
607}
608
Pavel Roskin933d5942011-07-13 11:19:57 -0400609static void __orinoco_ev_txexc(struct net_device *dev, struct hermes *hw)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610{
David Kilroyea60a6a2009-06-18 23:21:26 +0100611 struct orinoco_private *priv = ndev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612 struct net_device_stats *stats = &priv->stats;
613 u16 fid = hermes_read_regn(hw, TXCOMPLFID);
Pavel Roskind133ae42005-09-23 04:18:06 -0400614 u16 status;
Pavel Roskin30c2d3b2006-04-07 04:10:34 -0400615 struct hermes_txexc_data hdr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616 int err = 0;
617
618 if (fid == DUMMY_FID)
619 return; /* Nothing's really happened */
620
Pavel Roskin48ca7032005-09-23 04:18:06 -0400621 /* Read part of the frame header - we need status and addr1 */
David Kilroyb42f2072010-05-01 14:05:38 +0100622 err = hw->ops->bap_pread(hw, IRQ_BAP, &hdr,
623 sizeof(struct hermes_txexc_data),
624 fid, 0);
Christoph Hellwig95dd91f2005-06-19 01:27:56 +0200625
626 hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID);
627 stats->tx_errors++;
628
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629 if (err) {
630 printk(KERN_WARNING "%s: Unable to read descriptor on Tx error "
631 "(FID=%04X error %d)\n",
632 dev->name, fid, err);
Christoph Hellwig95dd91f2005-06-19 01:27:56 +0200633 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 }
David Kilroy6fe9deb2009-02-04 23:05:43 +0000635
Christoph Hellwig95dd91f2005-06-19 01:27:56 +0200636 DEBUG(1, "%s: Tx error, err %d (FID=%04X)\n", dev->name,
637 err, fid);
David Kilroy6fe9deb2009-02-04 23:05:43 +0000638
Christoph Hellwig95dd91f2005-06-19 01:27:56 +0200639 /* We produce a TXDROP event only for retry or lifetime
640 * exceeded, because that's the only status that really mean
641 * that this particular node went away.
642 * Other errors means that *we* screwed up. - Jean II */
Pavel Roskin30c2d3b2006-04-07 04:10:34 -0400643 status = le16_to_cpu(hdr.desc.status);
Pavel Roskind133ae42005-09-23 04:18:06 -0400644 if (status & (HERMES_TXSTAT_RETRYERR | HERMES_TXSTAT_AGEDERR)) {
Christoph Hellwig95dd91f2005-06-19 01:27:56 +0200645 union iwreq_data wrqu;
646
647 /* Copy 802.11 dest address.
648 * We use the 802.11 header because the frame may
649 * not be 802.3 or may be mangled...
650 * In Ad-Hoc mode, it will be the node address.
651 * In managed mode, it will be most likely the AP addr
652 * User space will figure out how to convert it to
653 * whatever it needs (IP address or else).
654 * - Jean II */
655 memcpy(wrqu.addr.sa_data, hdr.addr1, ETH_ALEN);
656 wrqu.addr.sa_family = ARPHRD_ETHER;
657
658 /* Send event to user space */
659 wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL);
660 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661
662 netif_wake_queue(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663}
664
David Kilroy593ef092010-05-01 14:05:39 +0100665void orinoco_tx_timeout(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666{
David Kilroyea60a6a2009-06-18 23:21:26 +0100667 struct orinoco_private *priv = ndev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668 struct net_device_stats *stats = &priv->stats;
669 struct hermes *hw = &priv->hw;
670
671 printk(KERN_WARNING "%s: Tx timeout! "
672 "ALLOCFID=%04x, TXCOMPLFID=%04x, EVSTAT=%04x\n",
673 dev->name, hermes_read_regn(hw, ALLOCFID),
674 hermes_read_regn(hw, TXCOMPLFID), hermes_read_regn(hw, EVSTAT));
675
676 stats->tx_errors++;
677
678 schedule_work(&priv->reset_work);
679}
David Kilroy593ef092010-05-01 14:05:39 +0100680EXPORT_SYMBOL(orinoco_tx_timeout);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681
682/********************************************************************/
683/* Rx path (data frames) */
684/********************************************************************/
685
686/* Does the frame have a SNAP header indicating it should be
687 * de-encapsulated to Ethernet-II? */
688static inline int is_ethersnap(void *_hdr)
689{
690 u8 *hdr = _hdr;
691
692 /* We de-encapsulate all packets which, a) have SNAP headers
693 * (i.e. SSAP=DSAP=0xaa and CTRL=0x3 in the 802.2 LLC header
694 * and where b) the OUI of the SNAP header is 00:00:00 or
695 * 00:00:f8 - we need both because different APs appear to use
696 * different OUIs for some reason */
697 return (memcmp(hdr, &encaps_hdr, 5) == 0)
David Kilroya94e8422009-02-04 23:05:44 +0000698 && ((hdr[5] == 0x00) || (hdr[5] == 0xf8));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699}
700
701static inline void orinoco_spy_gather(struct net_device *dev, u_char *mac,
702 int level, int noise)
703{
Pavel Roskin343c6862005-09-09 18:43:02 -0400704 struct iw_quality wstats;
705 wstats.level = level - 0x95;
706 wstats.noise = noise - 0x95;
707 wstats.qual = (level > noise) ? (level - noise) : 0;
Andrey Borzenkovf941f852008-11-15 17:15:09 +0300708 wstats.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
Pavel Roskin343c6862005-09-09 18:43:02 -0400709 /* Update spy records */
710 wireless_spy_update(dev, mac, &wstats);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700711}
712
713static void orinoco_stat_gather(struct net_device *dev,
714 struct sk_buff *skb,
715 struct hermes_rx_descriptor *desc)
716{
David Kilroyea60a6a2009-06-18 23:21:26 +0100717 struct orinoco_private *priv = ndev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718
719 /* Using spy support with lots of Rx packets, like in an
720 * infrastructure (AP), will really slow down everything, because
721 * the MAC address must be compared to each entry of the spy list.
722 * If the user really asks for it (set some address in the
723 * spy list), we do it, but he will pay the price.
724 * Note that to get here, you need both WIRELESS_SPY
725 * compiled in AND some addresses in the list !!!
726 */
727 /* Note : gcc will optimise the whole section away if
728 * WIRELESS_SPY is not defined... - Jean II */
729 if (SPY_NUMBER(priv)) {
Arnaldo Carvalho de Melo98e399f2007-03-19 15:33:04 -0700730 orinoco_spy_gather(dev, skb_mac_header(skb) + ETH_ALEN,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731 desc->signal, desc->silence);
732 }
733}
734
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200735/*
736 * orinoco_rx_monitor - handle received monitor frames.
737 *
738 * Arguments:
739 * dev network device
740 * rxfid received FID
741 * desc rx descriptor of the frame
742 *
743 * Call context: interrupt
744 */
745static void orinoco_rx_monitor(struct net_device *dev, u16 rxfid,
746 struct hermes_rx_descriptor *desc)
747{
748 u32 hdrlen = 30; /* return full header by default */
749 u32 datalen = 0;
750 u16 fc;
751 int err;
752 int len;
753 struct sk_buff *skb;
David Kilroyea60a6a2009-06-18 23:21:26 +0100754 struct orinoco_private *priv = ndev_priv(dev);
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200755 struct net_device_stats *stats = &priv->stats;
Pavel Roskin933d5942011-07-13 11:19:57 -0400756 struct hermes *hw = &priv->hw;
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200757
758 len = le16_to_cpu(desc->data_len);
759
760 /* Determine the size of the header and the data */
761 fc = le16_to_cpu(desc->frame_ctl);
762 switch (fc & IEEE80211_FCTL_FTYPE) {
763 case IEEE80211_FTYPE_DATA:
764 if ((fc & IEEE80211_FCTL_TODS)
765 && (fc & IEEE80211_FCTL_FROMDS))
766 hdrlen = 30;
767 else
768 hdrlen = 24;
769 datalen = len;
770 break;
771 case IEEE80211_FTYPE_MGMT:
772 hdrlen = 24;
773 datalen = len;
774 break;
775 case IEEE80211_FTYPE_CTL:
776 switch (fc & IEEE80211_FCTL_STYPE) {
777 case IEEE80211_STYPE_PSPOLL:
778 case IEEE80211_STYPE_RTS:
779 case IEEE80211_STYPE_CFEND:
780 case IEEE80211_STYPE_CFENDACK:
781 hdrlen = 16;
782 break;
783 case IEEE80211_STYPE_CTS:
784 case IEEE80211_STYPE_ACK:
785 hdrlen = 10;
786 break;
787 }
788 break;
789 default:
790 /* Unknown frame type */
791 break;
792 }
793
794 /* sanity check the length */
Johannes Berg2c7060022008-10-30 22:09:54 +0100795 if (datalen > IEEE80211_MAX_DATA_LEN + 12) {
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200796 printk(KERN_DEBUG "%s: oversized monitor frame, "
797 "data length = %d\n", dev->name, datalen);
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200798 stats->rx_length_errors++;
799 goto update_stats;
800 }
801
802 skb = dev_alloc_skb(hdrlen + datalen);
803 if (!skb) {
804 printk(KERN_WARNING "%s: Cannot allocate skb for monitor frame\n",
805 dev->name);
Florin Malitabb6e0932006-05-22 22:35:30 -0700806 goto update_stats;
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200807 }
808
809 /* Copy the 802.11 header to the skb */
810 memcpy(skb_put(skb, hdrlen), &(desc->frame_ctl), hdrlen);
Arnaldo Carvalho de Melo459a98e2007-03-19 15:30:44 -0700811 skb_reset_mac_header(skb);
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200812
813 /* If any, copy the data from the card to the skb */
814 if (datalen > 0) {
David Kilroyb42f2072010-05-01 14:05:38 +0100815 err = hw->ops->bap_pread(hw, IRQ_BAP, skb_put(skb, datalen),
816 ALIGN(datalen, 2), rxfid,
817 HERMES_802_2_OFFSET);
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200818 if (err) {
819 printk(KERN_ERR "%s: error %d reading monitor frame\n",
820 dev->name, err);
821 goto drop;
822 }
823 }
824
825 skb->dev = dev;
826 skb->ip_summed = CHECKSUM_NONE;
827 skb->pkt_type = PACKET_OTHERHOST;
Harvey Harrisonc1b4aa32009-01-29 13:26:44 -0800828 skb->protocol = cpu_to_be16(ETH_P_802_2);
David Kilroy6fe9deb2009-02-04 23:05:43 +0000829
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200830 stats->rx_packets++;
831 stats->rx_bytes += skb->len;
832
833 netif_rx(skb);
834 return;
835
836 drop:
837 dev_kfree_skb_irq(skb);
838 update_stats:
839 stats->rx_errors++;
840 stats->rx_dropped++;
841}
842
Pavel Roskin933d5942011-07-13 11:19:57 -0400843void __orinoco_ev_rx(struct net_device *dev, struct hermes *hw)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700844{
David Kilroyea60a6a2009-06-18 23:21:26 +0100845 struct orinoco_private *priv = ndev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846 struct net_device_stats *stats = &priv->stats;
847 struct iw_statistics *wstats = &priv->wstats;
848 struct sk_buff *skb = NULL;
David Kilroy31afcef2008-08-21 23:28:04 +0100849 u16 rxfid, status;
Christoph Hellwig8f2abf42005-06-19 01:28:02 +0200850 int length;
David Kilroy31afcef2008-08-21 23:28:04 +0100851 struct hermes_rx_descriptor *desc;
852 struct orinoco_rx_data *rx_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853 int err;
854
David Kilroy31afcef2008-08-21 23:28:04 +0100855 desc = kmalloc(sizeof(*desc), GFP_ATOMIC);
856 if (!desc) {
857 printk(KERN_WARNING
858 "%s: Can't allocate space for RX descriptor\n",
859 dev->name);
860 goto update_stats;
861 }
862
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863 rxfid = hermes_read_regn(hw, RXFID);
864
David Kilroyb42f2072010-05-01 14:05:38 +0100865 err = hw->ops->bap_pread(hw, IRQ_BAP, desc, sizeof(*desc),
866 rxfid, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867 if (err) {
868 printk(KERN_ERR "%s: error %d reading Rx descriptor. "
869 "Frame dropped.\n", dev->name, err);
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200870 goto update_stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871 }
872
David Kilroy31afcef2008-08-21 23:28:04 +0100873 status = le16_to_cpu(desc->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200875 if (status & HERMES_RXSTAT_BADCRC) {
876 DEBUG(1, "%s: Bad CRC on Rx. Frame dropped.\n",
877 dev->name);
878 stats->rx_crc_errors++;
879 goto update_stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880 }
881
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200882 /* Handle frames in monitor mode */
David Kilroy5217c572009-06-18 23:21:32 +0100883 if (priv->iw_mode == NL80211_IFTYPE_MONITOR) {
David Kilroy31afcef2008-08-21 23:28:04 +0100884 orinoco_rx_monitor(dev, rxfid, desc);
885 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886 }
887
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200888 if (status & HERMES_RXSTAT_UNDECRYPTABLE) {
889 DEBUG(1, "%s: Undecryptable frame on Rx. Frame dropped.\n",
890 dev->name);
891 wstats->discard.code++;
892 goto update_stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893 }
894
David Kilroy31afcef2008-08-21 23:28:04 +0100895 length = le16_to_cpu(desc->data_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897 /* Sanity checks */
898 if (length < 3) { /* No for even an 802.2 LLC header */
899 /* At least on Symbol firmware with PCF we get quite a
David Kilroy6fe9deb2009-02-04 23:05:43 +0000900 lot of these legitimately - Poll frames with no
901 data. */
David Kilroy31afcef2008-08-21 23:28:04 +0100902 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903 }
Johannes Berg2c7060022008-10-30 22:09:54 +0100904 if (length > IEEE80211_MAX_DATA_LEN) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700905 printk(KERN_WARNING "%s: Oversized frame received (%d bytes)\n",
906 dev->name, length);
907 stats->rx_length_errors++;
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200908 goto update_stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700909 }
910
David Kilroy23edcc42008-08-21 23:28:05 +0100911 /* Payload size does not include Michael MIC. Increase payload
912 * size to read it together with the data. */
913 if (status & HERMES_RXSTAT_MIC)
914 length += MICHAEL_MIC_LEN;
915
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916 /* We need space for the packet data itself, plus an ethernet
917 header, plus 2 bytes so we can align the IP header on a
918 32bit boundary, plus 1 byte so we can read in odd length
919 packets from the card, which has an IO granularity of 16
David Kilroy6fe9deb2009-02-04 23:05:43 +0000920 bits */
Pavel Roskin933d5942011-07-13 11:19:57 -0400921 skb = dev_alloc_skb(length + ETH_HLEN + 2 + 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922 if (!skb) {
923 printk(KERN_WARNING "%s: Can't allocate skb for Rx\n",
924 dev->name);
Christoph Hellwig98c4cae2005-06-19 01:28:06 +0200925 goto update_stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926 }
927
Christoph Hellwig8f2abf42005-06-19 01:28:02 +0200928 /* We'll prepend the header, so reserve space for it. The worst
929 case is no decapsulation, when 802.3 header is prepended and
930 nothing is removed. 2 is for aligning the IP header. */
931 skb_reserve(skb, ETH_HLEN + 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700932
David Kilroyb42f2072010-05-01 14:05:38 +0100933 err = hw->ops->bap_pread(hw, IRQ_BAP, skb_put(skb, length),
934 ALIGN(length, 2), rxfid,
935 HERMES_802_2_OFFSET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936 if (err) {
937 printk(KERN_ERR "%s: error %d reading frame. "
938 "Frame dropped.\n", dev->name, err);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939 goto drop;
940 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941
David Kilroy31afcef2008-08-21 23:28:04 +0100942 /* Add desc and skb to rx queue */
943 rx_data = kzalloc(sizeof(*rx_data), GFP_ATOMIC);
944 if (!rx_data) {
945 printk(KERN_WARNING "%s: Can't allocate RX packet\n",
946 dev->name);
947 goto drop;
948 }
949 rx_data->desc = desc;
950 rx_data->skb = skb;
951 list_add_tail(&rx_data->list, &priv->rx_list);
952 tasklet_schedule(&priv->rx_tasklet);
953
954 return;
955
956drop:
957 dev_kfree_skb_irq(skb);
958update_stats:
959 stats->rx_errors++;
960 stats->rx_dropped++;
961out:
962 kfree(desc);
963}
David Kilroy9afac702010-05-01 14:05:41 +0100964EXPORT_SYMBOL(__orinoco_ev_rx);
David Kilroy31afcef2008-08-21 23:28:04 +0100965
966static void orinoco_rx(struct net_device *dev,
967 struct hermes_rx_descriptor *desc,
968 struct sk_buff *skb)
969{
David Kilroyea60a6a2009-06-18 23:21:26 +0100970 struct orinoco_private *priv = ndev_priv(dev);
David Kilroy31afcef2008-08-21 23:28:04 +0100971 struct net_device_stats *stats = &priv->stats;
972 u16 status, fc;
973 int length;
974 struct ethhdr *hdr;
975
976 status = le16_to_cpu(desc->status);
977 length = le16_to_cpu(desc->data_len);
978 fc = le16_to_cpu(desc->frame_ctl);
979
David Kilroy23edcc42008-08-21 23:28:05 +0100980 /* Calculate and check MIC */
981 if (status & HERMES_RXSTAT_MIC) {
David Kilroy4af198f2009-08-05 21:23:32 +0100982 struct orinoco_tkip_key *key;
David Kilroy23edcc42008-08-21 23:28:05 +0100983 int key_id = ((status & HERMES_RXSTAT_MIC_KEY_ID) >>
984 HERMES_MIC_KEY_ID_SHIFT);
985 u8 mic[MICHAEL_MIC_LEN];
986 u8 *rxmic;
987 u8 *src = (fc & IEEE80211_FCTL_FROMDS) ?
988 desc->addr3 : desc->addr2;
989
990 /* Extract Michael MIC from payload */
991 rxmic = skb->data + skb->len - MICHAEL_MIC_LEN;
992
993 skb_trim(skb, skb->len - MICHAEL_MIC_LEN);
994 length -= MICHAEL_MIC_LEN;
995
David Kilroy4af198f2009-08-05 21:23:32 +0100996 key = (struct orinoco_tkip_key *) priv->keys[key_id].key;
997
998 if (!key) {
999 printk(KERN_WARNING "%s: Received encrypted frame from "
1000 "%pM using key %i, but key is not installed\n",
1001 dev->name, src, key_id);
1002 goto drop;
1003 }
1004
1005 orinoco_mic(priv->rx_tfm_mic, key->rx_mic, desc->addr1, src,
David Kilroy23edcc42008-08-21 23:28:05 +01001006 0, /* priority or QoS? */
David Kilroy4af198f2009-08-05 21:23:32 +01001007 skb->data, skb->len, &mic[0]);
David Kilroy23edcc42008-08-21 23:28:05 +01001008
1009 if (memcmp(mic, rxmic,
1010 MICHAEL_MIC_LEN)) {
1011 union iwreq_data wrqu;
1012 struct iw_michaelmicfailure wxmic;
David Kilroy23edcc42008-08-21 23:28:05 +01001013
1014 printk(KERN_WARNING "%s: "
Johannes Berge1749612008-10-27 15:59:26 -07001015 "Invalid Michael MIC in data frame from %pM, "
David Kilroy23edcc42008-08-21 23:28:05 +01001016 "using key %i\n",
Johannes Berge1749612008-10-27 15:59:26 -07001017 dev->name, src, key_id);
David Kilroy23edcc42008-08-21 23:28:05 +01001018
1019 /* TODO: update stats */
1020
1021 /* Notify userspace */
1022 memset(&wxmic, 0, sizeof(wxmic));
1023 wxmic.flags = key_id & IW_MICFAILURE_KEY_ID;
1024 wxmic.flags |= (desc->addr1[0] & 1) ?
1025 IW_MICFAILURE_GROUP : IW_MICFAILURE_PAIRWISE;
1026 wxmic.src_addr.sa_family = ARPHRD_ETHER;
1027 memcpy(wxmic.src_addr.sa_data, src, ETH_ALEN);
1028
1029 (void) orinoco_hw_get_tkip_iv(priv, key_id,
1030 &wxmic.tsc[0]);
1031
1032 memset(&wrqu, 0, sizeof(wrqu));
1033 wrqu.data.length = sizeof(wxmic);
1034 wireless_send_event(dev, IWEVMICHAELMICFAILURE, &wrqu,
1035 (char *) &wxmic);
1036
1037 goto drop;
1038 }
1039 }
1040
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041 /* Handle decapsulation
1042 * In most cases, the firmware tell us about SNAP frames.
1043 * For some reason, the SNAP frames sent by LinkSys APs
1044 * are not properly recognised by most firmwares.
1045 * So, check ourselves */
Christoph Hellwig8f2abf42005-06-19 01:28:02 +02001046 if (length >= ENCAPS_OVERHEAD &&
1047 (((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_1042) ||
1048 ((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_TUNNEL) ||
1049 is_ethersnap(skb->data))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050 /* These indicate a SNAP within 802.2 LLC within
1051 802.11 frame which we'll need to de-encapsulate to
1052 the original EthernetII frame. */
David Kilroyb2f30a02009-02-04 23:05:46 +00001053 hdr = (struct ethhdr *)skb_push(skb,
1054 ETH_HLEN - ENCAPS_OVERHEAD);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001055 } else {
Christoph Hellwig8f2abf42005-06-19 01:28:02 +02001056 /* 802.3 frame - prepend 802.3 header as is */
1057 hdr = (struct ethhdr *)skb_push(skb, ETH_HLEN);
1058 hdr->h_proto = htons(length);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059 }
David Kilroy31afcef2008-08-21 23:28:04 +01001060 memcpy(hdr->h_dest, desc->addr1, ETH_ALEN);
Christoph Hellwig8f2abf42005-06-19 01:28:02 +02001061 if (fc & IEEE80211_FCTL_FROMDS)
David Kilroy31afcef2008-08-21 23:28:04 +01001062 memcpy(hdr->h_source, desc->addr3, ETH_ALEN);
Christoph Hellwig8f2abf42005-06-19 01:28:02 +02001063 else
David Kilroy31afcef2008-08-21 23:28:04 +01001064 memcpy(hdr->h_source, desc->addr2, ETH_ALEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001065
Linus Torvalds1da177e2005-04-16 15:20:36 -07001066 skb->protocol = eth_type_trans(skb, dev);
1067 skb->ip_summed = CHECKSUM_NONE;
Christoph Hellwig8f2abf42005-06-19 01:28:02 +02001068 if (fc & IEEE80211_FCTL_TODS)
1069 skb->pkt_type = PACKET_OTHERHOST;
David Kilroy6fe9deb2009-02-04 23:05:43 +00001070
Linus Torvalds1da177e2005-04-16 15:20:36 -07001071 /* Process the wireless stats if needed */
David Kilroy31afcef2008-08-21 23:28:04 +01001072 orinoco_stat_gather(dev, skb, desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001073
1074 /* Pass the packet to the networking stack */
1075 netif_rx(skb);
1076 stats->rx_packets++;
1077 stats->rx_bytes += length;
1078
1079 return;
David Kilroy23edcc42008-08-21 23:28:05 +01001080
1081 drop:
1082 dev_kfree_skb(skb);
1083 stats->rx_errors++;
1084 stats->rx_dropped++;
David Kilroy31afcef2008-08-21 23:28:04 +01001085}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001086
David Kilroy31afcef2008-08-21 23:28:04 +01001087static void orinoco_rx_isr_tasklet(unsigned long data)
1088{
David Kilroy53819562009-06-18 23:21:28 +01001089 struct orinoco_private *priv = (struct orinoco_private *) data;
1090 struct net_device *dev = priv->ndev;
David Kilroy31afcef2008-08-21 23:28:04 +01001091 struct orinoco_rx_data *rx_data, *temp;
1092 struct hermes_rx_descriptor *desc;
1093 struct sk_buff *skb;
David Kilroy20953ad2009-01-07 00:23:55 +00001094 unsigned long flags;
1095
1096 /* orinoco_rx requires the driver lock, and we also need to
1097 * protect priv->rx_list, so just hold the lock over the
1098 * lot.
1099 *
1100 * If orinoco_lock fails, we've unplugged the card. In this
1101 * case just abort. */
1102 if (orinoco_lock(priv, &flags) != 0)
1103 return;
David Kilroy31afcef2008-08-21 23:28:04 +01001104
1105 /* extract desc and skb from queue */
1106 list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) {
1107 desc = rx_data->desc;
1108 skb = rx_data->skb;
1109 list_del(&rx_data->list);
1110 kfree(rx_data);
1111
1112 orinoco_rx(dev, desc, skb);
1113
1114 kfree(desc);
1115 }
David Kilroy20953ad2009-01-07 00:23:55 +00001116
1117 orinoco_unlock(priv, &flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001118}
1119
1120/********************************************************************/
1121/* Rx path (info frames) */
1122/********************************************************************/
1123
1124static void print_linkstatus(struct net_device *dev, u16 status)
1125{
David Kilroy21312662009-02-04 23:05:47 +00001126 char *s;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001127
1128 if (suppress_linkstatus)
1129 return;
1130
1131 switch (status) {
1132 case HERMES_LINKSTATUS_NOT_CONNECTED:
1133 s = "Not Connected";
1134 break;
1135 case HERMES_LINKSTATUS_CONNECTED:
1136 s = "Connected";
1137 break;
1138 case HERMES_LINKSTATUS_DISCONNECTED:
1139 s = "Disconnected";
1140 break;
1141 case HERMES_LINKSTATUS_AP_CHANGE:
1142 s = "AP Changed";
1143 break;
1144 case HERMES_LINKSTATUS_AP_OUT_OF_RANGE:
1145 s = "AP Out of Range";
1146 break;
1147 case HERMES_LINKSTATUS_AP_IN_RANGE:
1148 s = "AP In Range";
1149 break;
1150 case HERMES_LINKSTATUS_ASSOC_FAILED:
1151 s = "Association Failed";
1152 break;
1153 default:
1154 s = "UNKNOWN";
1155 }
David Kilroy6fe9deb2009-02-04 23:05:43 +00001156
Pavel Roskin11eaea42009-01-18 23:20:58 -05001157 printk(KERN_DEBUG "%s: New link status: %s (%04x)\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07001158 dev->name, s, status);
1159}
1160
Christoph Hellwig16739b02005-06-19 01:27:51 +02001161/* Search scan results for requested BSSID, join it if found */
David Howellsc4028952006-11-22 14:57:56 +00001162static void orinoco_join_ap(struct work_struct *work)
Christoph Hellwig16739b02005-06-19 01:27:51 +02001163{
David Howellsc4028952006-11-22 14:57:56 +00001164 struct orinoco_private *priv =
1165 container_of(work, struct orinoco_private, join_work);
1166 struct net_device *dev = priv->ndev;
Christoph Hellwig16739b02005-06-19 01:27:51 +02001167 struct hermes *hw = &priv->hw;
1168 int err;
1169 unsigned long flags;
1170 struct join_req {
1171 u8 bssid[ETH_ALEN];
Pavel Roskind133ae42005-09-23 04:18:06 -04001172 __le16 channel;
Eric Dumazetba2d3582010-06-02 18:10:09 +00001173 } __packed req;
Christoph Hellwig16739b02005-06-19 01:27:51 +02001174 const int atom_len = offsetof(struct prism2_scan_apinfo, atim);
Pavel Roskinc89cc222005-09-01 20:06:06 -04001175 struct prism2_scan_apinfo *atom = NULL;
Christoph Hellwig16739b02005-06-19 01:27:51 +02001176 int offset = 4;
Pavel Roskinc89cc222005-09-01 20:06:06 -04001177 int found = 0;
Christoph Hellwig16739b02005-06-19 01:27:51 +02001178 u8 *buf;
1179 u16 len;
1180
1181 /* Allocate buffer for scan results */
1182 buf = kmalloc(MAX_SCAN_LEN, GFP_KERNEL);
David Kilroya94e8422009-02-04 23:05:44 +00001183 if (!buf)
Christoph Hellwig16739b02005-06-19 01:27:51 +02001184 return;
1185
1186 if (orinoco_lock(priv, &flags) != 0)
Pavel Roskinf3cb4cc2005-09-23 04:18:06 -04001187 goto fail_lock;
Christoph Hellwig16739b02005-06-19 01:27:51 +02001188
1189 /* Sanity checks in case user changed something in the meantime */
David Kilroya94e8422009-02-04 23:05:44 +00001190 if (!priv->bssid_fixed)
Christoph Hellwig16739b02005-06-19 01:27:51 +02001191 goto out;
1192
1193 if (strlen(priv->desired_essid) == 0)
1194 goto out;
1195
1196 /* Read scan results from the firmware */
David Kilroyb42f2072010-05-01 14:05:38 +01001197 err = hw->ops->read_ltv(hw, USER_BAP,
1198 HERMES_RID_SCANRESULTSTABLE,
1199 MAX_SCAN_LEN, &len, buf);
Christoph Hellwig16739b02005-06-19 01:27:51 +02001200 if (err) {
1201 printk(KERN_ERR "%s: Cannot read scan results\n",
1202 dev->name);
1203 goto out;
1204 }
1205
1206 len = HERMES_RECLEN_TO_BYTES(len);
1207
1208 /* Go through the scan results looking for the channel of the AP
1209 * we were requested to join */
1210 for (; offset + atom_len <= len; offset += atom_len) {
1211 atom = (struct prism2_scan_apinfo *) (buf + offset);
Pavel Roskinc89cc222005-09-01 20:06:06 -04001212 if (memcmp(&atom->bssid, priv->desired_bssid, ETH_ALEN) == 0) {
1213 found = 1;
1214 break;
1215 }
Christoph Hellwig16739b02005-06-19 01:27:51 +02001216 }
1217
David Kilroya94e8422009-02-04 23:05:44 +00001218 if (!found) {
Pavel Roskinc89cc222005-09-01 20:06:06 -04001219 DEBUG(1, "%s: Requested AP not found in scan results\n",
1220 dev->name);
1221 goto out;
1222 }
Christoph Hellwig16739b02005-06-19 01:27:51 +02001223
Christoph Hellwig16739b02005-06-19 01:27:51 +02001224 memcpy(req.bssid, priv->desired_bssid, ETH_ALEN);
1225 req.channel = atom->channel; /* both are little-endian */
1226 err = HERMES_WRITE_RECORD(hw, USER_BAP, HERMES_RID_CNFJOINREQUEST,
1227 &req);
1228 if (err)
1229 printk(KERN_ERR "%s: Error issuing join request\n", dev->name);
1230
1231 out:
Christoph Hellwig16739b02005-06-19 01:27:51 +02001232 orinoco_unlock(priv, &flags);
Pavel Roskinf3cb4cc2005-09-23 04:18:06 -04001233
1234 fail_lock:
1235 kfree(buf);
Christoph Hellwig16739b02005-06-19 01:27:51 +02001236}
1237
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001238/* Send new BSSID to userspace */
David Kilroy6cd90b12008-08-21 23:28:00 +01001239static void orinoco_send_bssid_wevent(struct orinoco_private *priv)
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001240{
David Howellsc4028952006-11-22 14:57:56 +00001241 struct net_device *dev = priv->ndev;
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001242 struct hermes *hw = &priv->hw;
1243 union iwreq_data wrqu;
1244 int err;
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001245
David Kilroyb42f2072010-05-01 14:05:38 +01001246 err = hw->ops->read_ltv(hw, USER_BAP, HERMES_RID_CURRENTBSSID,
1247 ETH_ALEN, NULL, wrqu.ap_addr.sa_data);
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001248 if (err != 0)
David Kilroy6cd90b12008-08-21 23:28:00 +01001249 return;
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001250
1251 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1252
1253 /* Send event to user space */
1254 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001255}
1256
David Kilroy06009fd2008-08-21 23:28:03 +01001257static void orinoco_send_assocreqie_wevent(struct orinoco_private *priv)
1258{
1259 struct net_device *dev = priv->ndev;
1260 struct hermes *hw = &priv->hw;
1261 union iwreq_data wrqu;
1262 int err;
1263 u8 buf[88];
1264 u8 *ie;
1265
1266 if (!priv->has_wpa)
1267 return;
1268
David Kilroyb42f2072010-05-01 14:05:38 +01001269 err = hw->ops->read_ltv(hw, USER_BAP, HERMES_RID_CURRENT_ASSOC_REQ_INFO,
1270 sizeof(buf), NULL, &buf);
David Kilroy06009fd2008-08-21 23:28:03 +01001271 if (err != 0)
1272 return;
1273
1274 ie = orinoco_get_wpa_ie(buf, sizeof(buf));
1275 if (ie) {
1276 int rem = sizeof(buf) - (ie - &buf[0]);
1277 wrqu.data.length = ie[1] + 2;
1278 if (wrqu.data.length > rem)
1279 wrqu.data.length = rem;
1280
1281 if (wrqu.data.length)
1282 /* Send event to user space */
1283 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, ie);
1284 }
1285}
1286
1287static void orinoco_send_assocrespie_wevent(struct orinoco_private *priv)
1288{
1289 struct net_device *dev = priv->ndev;
1290 struct hermes *hw = &priv->hw;
1291 union iwreq_data wrqu;
1292 int err;
1293 u8 buf[88]; /* TODO: verify max size or IW_GENERIC_IE_MAX */
1294 u8 *ie;
1295
1296 if (!priv->has_wpa)
1297 return;
1298
David Kilroyb42f2072010-05-01 14:05:38 +01001299 err = hw->ops->read_ltv(hw, USER_BAP,
1300 HERMES_RID_CURRENT_ASSOC_RESP_INFO,
1301 sizeof(buf), NULL, &buf);
David Kilroy06009fd2008-08-21 23:28:03 +01001302 if (err != 0)
1303 return;
1304
1305 ie = orinoco_get_wpa_ie(buf, sizeof(buf));
1306 if (ie) {
1307 int rem = sizeof(buf) - (ie - &buf[0]);
1308 wrqu.data.length = ie[1] + 2;
1309 if (wrqu.data.length > rem)
1310 wrqu.data.length = rem;
1311
1312 if (wrqu.data.length)
1313 /* Send event to user space */
1314 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, ie);
1315 }
1316}
1317
David Kilroy6cd90b12008-08-21 23:28:00 +01001318static void orinoco_send_wevents(struct work_struct *work)
1319{
1320 struct orinoco_private *priv =
1321 container_of(work, struct orinoco_private, wevent_work);
1322 unsigned long flags;
1323
1324 if (orinoco_lock(priv, &flags) != 0)
1325 return;
1326
David Kilroy06009fd2008-08-21 23:28:03 +01001327 orinoco_send_assocreqie_wevent(priv);
1328 orinoco_send_assocrespie_wevent(priv);
David Kilroy6cd90b12008-08-21 23:28:00 +01001329 orinoco_send_bssid_wevent(priv);
1330
1331 orinoco_unlock(priv, &flags);
1332}
Dan Williams1e3428e2007-10-10 23:56:25 -04001333
David Kilroyc63cdbe2009-06-18 23:21:33 +01001334static void qbuf_scan(struct orinoco_private *priv, void *buf,
1335 int len, int type)
1336{
1337 struct orinoco_scan_data *sd;
1338 unsigned long flags;
1339
1340 sd = kmalloc(sizeof(*sd), GFP_ATOMIC);
1341 sd->buf = buf;
1342 sd->len = len;
1343 sd->type = type;
1344
1345 spin_lock_irqsave(&priv->scan_lock, flags);
1346 list_add_tail(&sd->list, &priv->scan_list);
1347 spin_unlock_irqrestore(&priv->scan_lock, flags);
1348
1349 schedule_work(&priv->process_scan);
1350}
1351
1352static void qabort_scan(struct orinoco_private *priv)
1353{
1354 struct orinoco_scan_data *sd;
1355 unsigned long flags;
1356
1357 sd = kmalloc(sizeof(*sd), GFP_ATOMIC);
1358 sd->len = -1; /* Abort */
1359
1360 spin_lock_irqsave(&priv->scan_lock, flags);
1361 list_add_tail(&sd->list, &priv->scan_list);
1362 spin_unlock_irqrestore(&priv->scan_lock, flags);
1363
1364 schedule_work(&priv->process_scan);
1365}
1366
1367static void orinoco_process_scan_results(struct work_struct *work)
1368{
1369 struct orinoco_private *priv =
1370 container_of(work, struct orinoco_private, process_scan);
1371 struct orinoco_scan_data *sd, *temp;
1372 unsigned long flags;
1373 void *buf;
1374 int len;
1375 int type;
1376
1377 spin_lock_irqsave(&priv->scan_lock, flags);
1378 list_for_each_entry_safe(sd, temp, &priv->scan_list, list) {
David Kilroyc63cdbe2009-06-18 23:21:33 +01001379
1380 buf = sd->buf;
1381 len = sd->len;
1382 type = sd->type;
1383
1384 list_del(&sd->list);
Joe Gunn3bf184a2011-03-15 08:41:19 -07001385 spin_unlock_irqrestore(&priv->scan_lock, flags);
David Kilroyc63cdbe2009-06-18 23:21:33 +01001386 kfree(sd);
1387
1388 if (len > 0) {
1389 if (type == HERMES_INQ_CHANNELINFO)
1390 orinoco_add_extscan_result(priv, buf, len);
1391 else
1392 orinoco_add_hostscan_results(priv, buf, len);
1393
1394 kfree(buf);
David Kilroycf634952010-11-24 20:33:02 +00001395 } else {
David Kilroyc63cdbe2009-06-18 23:21:33 +01001396 /* Either abort or complete the scan */
David Kilroycf634952010-11-24 20:33:02 +00001397 orinoco_scan_done(priv, (len < 0));
David Kilroyc63cdbe2009-06-18 23:21:33 +01001398 }
1399
1400 spin_lock_irqsave(&priv->scan_lock, flags);
1401 }
1402 spin_unlock_irqrestore(&priv->scan_lock, flags);
1403}
1404
Pavel Roskin933d5942011-07-13 11:19:57 -04001405void __orinoco_ev_info(struct net_device *dev, struct hermes *hw)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001406{
David Kilroyea60a6a2009-06-18 23:21:26 +01001407 struct orinoco_private *priv = ndev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001408 u16 infofid;
1409 struct {
Pavel Roskind133ae42005-09-23 04:18:06 -04001410 __le16 len;
1411 __le16 type;
Eric Dumazetba2d3582010-06-02 18:10:09 +00001412 } __packed info;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001413 int len, type;
1414 int err;
1415
1416 /* This is an answer to an INQUIRE command that we did earlier,
1417 * or an information "event" generated by the card
1418 * The controller return to us a pseudo frame containing
1419 * the information in question - Jean II */
1420 infofid = hermes_read_regn(hw, INFOFID);
1421
1422 /* Read the info frame header - don't try too hard */
David Kilroyb42f2072010-05-01 14:05:38 +01001423 err = hw->ops->bap_pread(hw, IRQ_BAP, &info, sizeof(info),
1424 infofid, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001425 if (err) {
1426 printk(KERN_ERR "%s: error %d reading info frame. "
1427 "Frame dropped.\n", dev->name, err);
1428 return;
1429 }
David Kilroy6fe9deb2009-02-04 23:05:43 +00001430
Linus Torvalds1da177e2005-04-16 15:20:36 -07001431 len = HERMES_RECLEN_TO_BYTES(le16_to_cpu(info.len));
1432 type = le16_to_cpu(info.type);
1433
1434 switch (type) {
1435 case HERMES_INQ_TALLIES: {
1436 struct hermes_tallies_frame tallies;
1437 struct iw_statistics *wstats = &priv->wstats;
David Kilroy6fe9deb2009-02-04 23:05:43 +00001438
Linus Torvalds1da177e2005-04-16 15:20:36 -07001439 if (len > sizeof(tallies)) {
1440 printk(KERN_WARNING "%s: Tallies frame too long (%d bytes)\n",
1441 dev->name, len);
1442 len = sizeof(tallies);
1443 }
David Kilroy6fe9deb2009-02-04 23:05:43 +00001444
David Kilroyb42f2072010-05-01 14:05:38 +01001445 err = hw->ops->bap_pread(hw, IRQ_BAP, &tallies, len,
1446 infofid, sizeof(info));
Christoph Hellwig84d8a2f2005-05-14 17:30:22 +02001447 if (err)
1448 break;
David Kilroy6fe9deb2009-02-04 23:05:43 +00001449
Linus Torvalds1da177e2005-04-16 15:20:36 -07001450 /* Increment our various counters */
1451 /* wstats->discard.nwid - no wrong BSSID stuff */
1452 wstats->discard.code +=
1453 le16_to_cpu(tallies.RxWEPUndecryptable);
David Kilroy6fe9deb2009-02-04 23:05:43 +00001454 if (len == sizeof(tallies))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001455 wstats->discard.code +=
1456 le16_to_cpu(tallies.RxDiscards_WEPICVError) +
1457 le16_to_cpu(tallies.RxDiscards_WEPExcluded);
1458 wstats->discard.misc +=
1459 le16_to_cpu(tallies.TxDiscardsWrongSA);
1460 wstats->discard.fragment +=
1461 le16_to_cpu(tallies.RxMsgInBadMsgFragments);
1462 wstats->discard.retries +=
1463 le16_to_cpu(tallies.TxRetryLimitExceeded);
1464 /* wstats->miss.beacon - no match */
1465 }
1466 break;
1467 case HERMES_INQ_LINKSTATUS: {
1468 struct hermes_linkstatus linkstatus;
1469 u16 newstatus;
1470 int connected;
1471
David Kilroy5217c572009-06-18 23:21:32 +01001472 if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
Christoph Hellwig8f2abf42005-06-19 01:28:02 +02001473 break;
1474
Linus Torvalds1da177e2005-04-16 15:20:36 -07001475 if (len != sizeof(linkstatus)) {
1476 printk(KERN_WARNING "%s: Unexpected size for linkstatus frame (%d bytes)\n",
1477 dev->name, len);
1478 break;
1479 }
1480
David Kilroyb42f2072010-05-01 14:05:38 +01001481 err = hw->ops->bap_pread(hw, IRQ_BAP, &linkstatus, len,
1482 infofid, sizeof(info));
Christoph Hellwig84d8a2f2005-05-14 17:30:22 +02001483 if (err)
1484 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001485 newstatus = le16_to_cpu(linkstatus.linkstatus);
1486
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001487 /* Symbol firmware uses "out of range" to signal that
1488 * the hostscan frame can be requested. */
1489 if (newstatus == HERMES_LINKSTATUS_AP_OUT_OF_RANGE &&
1490 priv->firmware_type == FIRMWARE_TYPE_SYMBOL &&
David Kilroyc63cdbe2009-06-18 23:21:33 +01001491 priv->has_hostscan && priv->scan_request) {
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001492 hermes_inquire(hw, HERMES_INQ_HOSTSCAN_SYMBOL);
1493 break;
1494 }
1495
Linus Torvalds1da177e2005-04-16 15:20:36 -07001496 connected = (newstatus == HERMES_LINKSTATUS_CONNECTED)
1497 || (newstatus == HERMES_LINKSTATUS_AP_CHANGE)
1498 || (newstatus == HERMES_LINKSTATUS_AP_IN_RANGE);
1499
1500 if (connected)
1501 netif_carrier_on(dev);
David Gibson7bb7c3a2005-05-12 20:02:10 -04001502 else if (!ignore_disconnect)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001503 netif_carrier_off(dev);
1504
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001505 if (newstatus != priv->last_linkstatus) {
1506 priv->last_linkstatus = newstatus;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001507 print_linkstatus(dev, newstatus);
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001508 /* The info frame contains only one word which is the
1509 * status (see hermes.h). The status is pretty boring
1510 * in itself, that's why we export the new BSSID...
1511 * Jean II */
1512 schedule_work(&priv->wevent_work);
1513 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001514 }
1515 break;
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001516 case HERMES_INQ_SCAN:
David Kilroyc63cdbe2009-06-18 23:21:33 +01001517 if (!priv->scan_request && priv->bssid_fixed &&
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001518 priv->firmware_type == FIRMWARE_TYPE_INTERSIL) {
1519 schedule_work(&priv->join_work);
1520 break;
1521 }
1522 /* fall through */
1523 case HERMES_INQ_HOSTSCAN:
1524 case HERMES_INQ_HOSTSCAN_SYMBOL: {
1525 /* Result of a scanning. Contains information about
1526 * cells in the vicinity - Jean II */
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001527 unsigned char *buf;
1528
1529 /* Sanity check */
1530 if (len > 4096) {
1531 printk(KERN_WARNING "%s: Scan results too large (%d bytes)\n",
1532 dev->name, len);
David Kilroyc63cdbe2009-06-18 23:21:33 +01001533 qabort_scan(priv);
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001534 break;
1535 }
1536
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001537 /* Allocate buffer for results */
1538 buf = kmalloc(len, GFP_ATOMIC);
David Kilroyc63cdbe2009-06-18 23:21:33 +01001539 if (buf == NULL) {
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001540 /* No memory, so can't printk()... */
David Kilroyc63cdbe2009-06-18 23:21:33 +01001541 qabort_scan(priv);
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001542 break;
David Kilroyc63cdbe2009-06-18 23:21:33 +01001543 }
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001544
1545 /* Read scan data */
David Kilroyb42f2072010-05-01 14:05:38 +01001546 err = hw->ops->bap_pread(hw, IRQ_BAP, (void *) buf, len,
1547 infofid, sizeof(info));
Pavel Roskin708218b2005-09-01 20:05:19 -04001548 if (err) {
1549 kfree(buf);
David Kilroyc63cdbe2009-06-18 23:21:33 +01001550 qabort_scan(priv);
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001551 break;
Pavel Roskin708218b2005-09-01 20:05:19 -04001552 }
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001553
1554#ifdef ORINOCO_DEBUG
1555 {
1556 int i;
1557 printk(KERN_DEBUG "Scan result [%02X", buf[0]);
David Kilroya94e8422009-02-04 23:05:44 +00001558 for (i = 1; i < (len * 2); i++)
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001559 printk(":%02X", buf[i]);
1560 printk("]\n");
1561 }
1562#endif /* ORINOCO_DEBUG */
1563
David Kilroyc63cdbe2009-06-18 23:21:33 +01001564 qbuf_scan(priv, buf, len, type);
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001565 }
1566 break;
David Kilroy01632fa2008-08-21 23:27:58 +01001567 case HERMES_INQ_CHANNELINFO:
1568 {
1569 struct agere_ext_scan_info *bss;
1570
David Kilroyc63cdbe2009-06-18 23:21:33 +01001571 if (!priv->scan_request) {
David Kilroy01632fa2008-08-21 23:27:58 +01001572 printk(KERN_DEBUG "%s: Got chaninfo without scan, "
1573 "len=%d\n", dev->name, len);
1574 break;
1575 }
1576
1577 /* An empty result indicates that the scan is complete */
1578 if (len == 0) {
David Kilroyc63cdbe2009-06-18 23:21:33 +01001579 qbuf_scan(priv, NULL, len, type);
David Kilroy01632fa2008-08-21 23:27:58 +01001580 break;
1581 }
1582
1583 /* Sanity check */
David Kilroyc63cdbe2009-06-18 23:21:33 +01001584 else if (len < (offsetof(struct agere_ext_scan_info,
David Kilroy01632fa2008-08-21 23:27:58 +01001585 data) + 2)) {
1586 /* Drop this result now so we don't have to
1587 * keep checking later */
1588 printk(KERN_WARNING
1589 "%s: Ext scan results too short (%d bytes)\n",
1590 dev->name, len);
1591 break;
1592 }
1593
David Kilroyc63cdbe2009-06-18 23:21:33 +01001594 bss = kmalloc(len, GFP_ATOMIC);
David Kilroy01632fa2008-08-21 23:27:58 +01001595 if (bss == NULL)
1596 break;
1597
1598 /* Read scan data */
David Kilroyb42f2072010-05-01 14:05:38 +01001599 err = hw->ops->bap_pread(hw, IRQ_BAP, (void *) bss, len,
1600 infofid, sizeof(info));
David Kilroyc63cdbe2009-06-18 23:21:33 +01001601 if (err)
David Kilroy01632fa2008-08-21 23:27:58 +01001602 kfree(bss);
David Kilroyc63cdbe2009-06-18 23:21:33 +01001603 else
1604 qbuf_scan(priv, bss, len, type);
David Kilroy01632fa2008-08-21 23:27:58 +01001605
David Kilroy01632fa2008-08-21 23:27:58 +01001606 break;
1607 }
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001608 case HERMES_INQ_SEC_STAT_AGERE:
1609 /* Security status (Agere specific) */
1610 /* Ignore this frame for now */
1611 if (priv->firmware_type == FIRMWARE_TYPE_AGERE)
1612 break;
1613 /* fall through */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001614 default:
1615 printk(KERN_DEBUG "%s: Unknown information frame received: "
1616 "type 0x%04x, length %d\n", dev->name, type, len);
1617 /* We don't actually do anything about it */
1618 break;
1619 }
1620}
David Kilroy9afac702010-05-01 14:05:41 +01001621EXPORT_SYMBOL(__orinoco_ev_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001622
Pavel Roskin933d5942011-07-13 11:19:57 -04001623static void __orinoco_ev_infdrop(struct net_device *dev, struct hermes *hw)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001624{
1625 if (net_ratelimit())
1626 printk(KERN_DEBUG "%s: Information frame lost.\n", dev->name);
1627}
1628
1629/********************************************************************/
1630/* Internal hardware control routines */
1631/********************************************************************/
1632
David Kilroy6415f7d2009-06-18 23:21:30 +01001633static int __orinoco_up(struct orinoco_private *priv)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001634{
David Kilroya2608362009-06-18 23:21:23 +01001635 struct net_device *dev = priv->ndev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001636 struct hermes *hw = &priv->hw;
1637 int err;
1638
Christoph Hellwig84d8a2f2005-05-14 17:30:22 +02001639 netif_carrier_off(dev); /* just to make sure */
1640
David Kilroy721aa2f2009-06-18 23:21:31 +01001641 err = __orinoco_commit(priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001642 if (err) {
1643 printk(KERN_ERR "%s: Error %d configuring card\n",
1644 dev->name, err);
1645 return err;
1646 }
1647
1648 /* Fire things up again */
1649 hermes_set_irqmask(hw, ORINOCO_INTEN);
1650 err = hermes_enable_port(hw, 0);
1651 if (err) {
1652 printk(KERN_ERR "%s: Error %d enabling MAC port\n",
1653 dev->name, err);
1654 return err;
1655 }
1656
1657 netif_start_queue(dev);
1658
1659 return 0;
1660}
1661
David Kilroy6415f7d2009-06-18 23:21:30 +01001662static int __orinoco_down(struct orinoco_private *priv)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001663{
David Kilroya2608362009-06-18 23:21:23 +01001664 struct net_device *dev = priv->ndev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001665 struct hermes *hw = &priv->hw;
1666 int err;
1667
1668 netif_stop_queue(dev);
1669
David Kilroya94e8422009-02-04 23:05:44 +00001670 if (!priv->hw_unavailable) {
1671 if (!priv->broken_disableport) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001672 err = hermes_disable_port(hw, 0);
1673 if (err) {
1674 /* Some firmwares (e.g. Intersil 1.3.x) seem
1675 * to have problems disabling the port, oh
1676 * well, too bad. */
1677 printk(KERN_WARNING "%s: Error %d disabling MAC port\n",
1678 dev->name, err);
1679 priv->broken_disableport = 1;
1680 }
1681 }
1682 hermes_set_irqmask(hw, 0);
1683 hermes_write_regn(hw, EVACK, 0xffff);
1684 }
David Kilroy6fe9deb2009-02-04 23:05:43 +00001685
David Kilroycf634952010-11-24 20:33:02 +00001686 orinoco_scan_done(priv, true);
1687
Linus Torvalds1da177e2005-04-16 15:20:36 -07001688 /* firmware will have to reassociate */
1689 netif_carrier_off(dev);
1690 priv->last_linkstatus = 0xffff;
1691
1692 return 0;
1693}
1694
David Kilroy6415f7d2009-06-18 23:21:30 +01001695static int orinoco_reinit_firmware(struct orinoco_private *priv)
Pavel Roskin37a6c612006-04-07 04:10:49 -04001696{
Pavel Roskin37a6c612006-04-07 04:10:49 -04001697 struct hermes *hw = &priv->hw;
1698 int err;
1699
David Kilroyb42f2072010-05-01 14:05:38 +01001700 err = hw->ops->init(hw);
Andrey Borzenkov0df6cbb2008-10-12 20:15:43 +04001701 if (priv->do_fw_download && !err) {
1702 err = orinoco_download(priv);
1703 if (err)
1704 priv->do_fw_download = 0;
1705 }
Pavel Roskin37a6c612006-04-07 04:10:49 -04001706 if (!err)
David Kilroy42a51b92009-06-18 23:21:20 +01001707 err = orinoco_hw_allocate_fid(priv);
Pavel Roskin37a6c612006-04-07 04:10:49 -04001708
1709 return err;
1710}
1711
David Kilroy721aa2f2009-06-18 23:21:31 +01001712static int
David Kilroy5865d012009-02-04 23:05:54 +00001713__orinoco_set_multicast_list(struct net_device *dev)
1714{
David Kilroyea60a6a2009-06-18 23:21:26 +01001715 struct orinoco_private *priv = ndev_priv(dev);
David Kilroy5865d012009-02-04 23:05:54 +00001716 int err = 0;
1717 int promisc, mc_count;
1718
1719 /* The Hermes doesn't seem to have an allmulti mode, so we go
1720 * into promiscuous mode and let the upper levels deal. */
1721 if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI) ||
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00001722 (netdev_mc_count(dev) > MAX_MULTICAST(priv))) {
David Kilroy5865d012009-02-04 23:05:54 +00001723 promisc = 1;
1724 mc_count = 0;
1725 } else {
1726 promisc = 0;
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00001727 mc_count = netdev_mc_count(dev);
David Kilroy5865d012009-02-04 23:05:54 +00001728 }
1729
Jiri Pirko655ffee2010-02-27 07:35:45 +00001730 err = __orinoco_hw_set_multicast_list(priv, dev, mc_count, promisc);
David Kilroy721aa2f2009-06-18 23:21:31 +01001731
1732 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001733}
1734
Linus Torvalds1da177e2005-04-16 15:20:36 -07001735/* This must be called from user context, without locks held - use
1736 * schedule_work() */
David Kilroycb1576a2009-02-04 23:05:56 +00001737void orinoco_reset(struct work_struct *work)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001738{
David Howellsc4028952006-11-22 14:57:56 +00001739 struct orinoco_private *priv =
1740 container_of(work, struct orinoco_private, reset_work);
1741 struct net_device *dev = priv->ndev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001742 struct hermes *hw = &priv->hw;
Christoph Hellwig8551cb92005-05-14 17:30:04 +02001743 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001744 unsigned long flags;
1745
1746 if (orinoco_lock(priv, &flags) != 0)
1747 /* When the hardware becomes available again, whatever
1748 * detects that is responsible for re-initializing
1749 * it. So no need for anything further */
1750 return;
1751
1752 netif_stop_queue(dev);
1753
1754 /* Shut off interrupts. Depending on what state the hardware
1755 * is in, this might not work, but we'll try anyway */
1756 hermes_set_irqmask(hw, 0);
1757 hermes_write_regn(hw, EVACK, 0xffff);
1758
1759 priv->hw_unavailable++;
1760 priv->last_linkstatus = 0xffff; /* firmware will have to reassociate */
1761 netif_carrier_off(dev);
1762
1763 orinoco_unlock(priv, &flags);
1764
David Kilroyc63cdbe2009-06-18 23:21:33 +01001765 /* Scanning support: Notify scan cancellation */
David Kilroycf634952010-11-24 20:33:02 +00001766 orinoco_scan_done(priv, true);
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02001767
Christoph Hellwig8551cb92005-05-14 17:30:04 +02001768 if (priv->hard_reset) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001769 err = (*priv->hard_reset)(priv);
Christoph Hellwig8551cb92005-05-14 17:30:04 +02001770 if (err) {
1771 printk(KERN_ERR "%s: orinoco_reset: Error %d "
1772 "performing hard reset\n", dev->name, err);
1773 goto disable;
1774 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001775 }
1776
David Kilroya2608362009-06-18 23:21:23 +01001777 err = orinoco_reinit_firmware(priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001778 if (err) {
1779 printk(KERN_ERR "%s: orinoco_reset: Error %d re-initializing firmware\n",
1780 dev->name, err);
Christoph Hellwig8551cb92005-05-14 17:30:04 +02001781 goto disable;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001782 }
1783
David Kilroyb2f30a02009-02-04 23:05:46 +00001784 /* This has to be called from user context */
David Kilroybcad6e82010-05-01 14:05:40 +01001785 orinoco_lock_irq(priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001786
1787 priv->hw_unavailable--;
1788
1789 /* priv->open or priv->hw_unavailable might have changed while
1790 * we dropped the lock */
David Kilroya94e8422009-02-04 23:05:44 +00001791 if (priv->open && (!priv->hw_unavailable)) {
David Kilroya2608362009-06-18 23:21:23 +01001792 err = __orinoco_up(priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001793 if (err) {
1794 printk(KERN_ERR "%s: orinoco_reset: Error %d reenabling card\n",
1795 dev->name, err);
1796 } else
1797 dev->trans_start = jiffies;
1798 }
1799
David Kilroybcad6e82010-05-01 14:05:40 +01001800 orinoco_unlock_irq(priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001801
1802 return;
Christoph Hellwig8551cb92005-05-14 17:30:04 +02001803 disable:
1804 hermes_set_irqmask(hw, 0);
1805 netif_device_detach(dev);
1806 printk(KERN_ERR "%s: Device has been disabled!\n", dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001807}
1808
David Kilroy721aa2f2009-06-18 23:21:31 +01001809static int __orinoco_commit(struct orinoco_private *priv)
1810{
1811 struct net_device *dev = priv->ndev;
1812 int err = 0;
1813
David Kilroyba34fce2010-12-05 15:45:58 +00001814 /* If we've called commit, we are reconfiguring or bringing the
1815 * interface up. Maintaining countermeasures across this would
1816 * be confusing, so note that we've disabled them. The port will
1817 * be enabled later in orinoco_commit or __orinoco_up. */
1818 priv->tkip_cm_active = 0;
1819
David Kilroy721aa2f2009-06-18 23:21:31 +01001820 err = orinoco_hw_program_rids(priv);
1821
1822 /* FIXME: what about netif_tx_lock */
1823 (void) __orinoco_set_multicast_list(dev);
1824
1825 return err;
1826}
1827
1828/* Ensures configuration changes are applied. May result in a reset.
1829 * The caller should hold priv->lock
1830 */
1831int orinoco_commit(struct orinoco_private *priv)
1832{
1833 struct net_device *dev = priv->ndev;
Pavel Roskin933d5942011-07-13 11:19:57 -04001834 struct hermes *hw = &priv->hw;
David Kilroy721aa2f2009-06-18 23:21:31 +01001835 int err;
1836
1837 if (priv->broken_disableport) {
1838 schedule_work(&priv->reset_work);
1839 return 0;
1840 }
1841
1842 err = hermes_disable_port(hw, 0);
1843 if (err) {
1844 printk(KERN_WARNING "%s: Unable to disable port "
1845 "while reconfiguring card\n", dev->name);
1846 priv->broken_disableport = 1;
1847 goto out;
1848 }
1849
1850 err = __orinoco_commit(priv);
1851 if (err) {
1852 printk(KERN_WARNING "%s: Unable to reconfigure card\n",
1853 dev->name);
1854 goto out;
1855 }
1856
1857 err = hermes_enable_port(hw, 0);
1858 if (err) {
1859 printk(KERN_WARNING "%s: Unable to enable port while reconfiguring card\n",
1860 dev->name);
1861 goto out;
1862 }
1863
1864 out:
1865 if (err) {
1866 printk(KERN_WARNING "%s: Resetting instead...\n", dev->name);
1867 schedule_work(&priv->reset_work);
1868 err = 0;
1869 }
1870 return err;
1871}
1872
Linus Torvalds1da177e2005-04-16 15:20:36 -07001873/********************************************************************/
1874/* Interrupt handler */
1875/********************************************************************/
1876
Pavel Roskin933d5942011-07-13 11:19:57 -04001877static void __orinoco_ev_tick(struct net_device *dev, struct hermes *hw)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001878{
1879 printk(KERN_DEBUG "%s: TICK\n", dev->name);
1880}
1881
Pavel Roskin933d5942011-07-13 11:19:57 -04001882static void __orinoco_ev_wterr(struct net_device *dev, struct hermes *hw)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001883{
1884 /* This seems to happen a fair bit under load, but ignoring it
1885 seems to work fine...*/
1886 printk(KERN_DEBUG "%s: MAC controller error (WTERR). Ignoring.\n",
1887 dev->name);
1888}
1889
David Howells7d12e782006-10-05 14:55:46 +01001890irqreturn_t orinoco_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001891{
David Kilroya2608362009-06-18 23:21:23 +01001892 struct orinoco_private *priv = dev_id;
1893 struct net_device *dev = priv->ndev;
Pavel Roskin933d5942011-07-13 11:19:57 -04001894 struct hermes *hw = &priv->hw;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001895 int count = MAX_IRQLOOPS_PER_IRQ;
1896 u16 evstat, events;
David Kilroy21312662009-02-04 23:05:47 +00001897 /* These are used to detect a runaway interrupt situation.
1898 *
1899 * If we get more than MAX_IRQLOOPS_PER_JIFFY iterations in a jiffy,
1900 * we panic and shut down the hardware
1901 */
1902 /* jiffies value the last time we were called */
1903 static int last_irq_jiffy; /* = 0 */
1904 static int loops_this_jiffy; /* = 0 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001905 unsigned long flags;
1906
1907 if (orinoco_lock(priv, &flags) != 0) {
1908 /* If hw is unavailable - we don't know if the irq was
1909 * for us or not */
1910 return IRQ_HANDLED;
1911 }
1912
1913 evstat = hermes_read_regn(hw, EVSTAT);
1914 events = evstat & hw->inten;
David Kilroya94e8422009-02-04 23:05:44 +00001915 if (!events) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001916 orinoco_unlock(priv, &flags);
1917 return IRQ_NONE;
1918 }
David Kilroy6fe9deb2009-02-04 23:05:43 +00001919
Linus Torvalds1da177e2005-04-16 15:20:36 -07001920 if (jiffies != last_irq_jiffy)
1921 loops_this_jiffy = 0;
1922 last_irq_jiffy = jiffies;
1923
1924 while (events && count--) {
1925 if (++loops_this_jiffy > MAX_IRQLOOPS_PER_JIFFY) {
1926 printk(KERN_WARNING "%s: IRQ handler is looping too "
1927 "much! Resetting.\n", dev->name);
1928 /* Disable interrupts for now */
1929 hermes_set_irqmask(hw, 0);
1930 schedule_work(&priv->reset_work);
1931 break;
1932 }
1933
1934 /* Check the card hasn't been removed */
David Kilroya94e8422009-02-04 23:05:44 +00001935 if (!hermes_present(hw)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001936 DEBUG(0, "orinoco_interrupt(): card removed\n");
1937 break;
1938 }
1939
1940 if (events & HERMES_EV_TICK)
1941 __orinoco_ev_tick(dev, hw);
1942 if (events & HERMES_EV_WTERR)
1943 __orinoco_ev_wterr(dev, hw);
1944 if (events & HERMES_EV_INFDROP)
1945 __orinoco_ev_infdrop(dev, hw);
1946 if (events & HERMES_EV_INFO)
1947 __orinoco_ev_info(dev, hw);
1948 if (events & HERMES_EV_RX)
1949 __orinoco_ev_rx(dev, hw);
1950 if (events & HERMES_EV_TXEXC)
1951 __orinoco_ev_txexc(dev, hw);
1952 if (events & HERMES_EV_TX)
1953 __orinoco_ev_tx(dev, hw);
1954 if (events & HERMES_EV_ALLOC)
1955 __orinoco_ev_alloc(dev, hw);
David Kilroy6fe9deb2009-02-04 23:05:43 +00001956
Christoph Hellwig84d8a2f2005-05-14 17:30:22 +02001957 hermes_write_regn(hw, EVACK, evstat);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001958
1959 evstat = hermes_read_regn(hw, EVSTAT);
1960 events = evstat & hw->inten;
Joe Perches6403eab2011-06-03 11:51:20 +00001961 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001962
1963 orinoco_unlock(priv, &flags);
1964 return IRQ_HANDLED;
1965}
David Kilroy21312662009-02-04 23:05:47 +00001966EXPORT_SYMBOL(orinoco_interrupt);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001967
1968/********************************************************************/
David Kilroy39d1ffe2008-11-22 10:37:28 +00001969/* Power management */
1970/********************************************************************/
1971#if defined(CONFIG_PM_SLEEP) && !defined(CONFIG_HERMES_CACHE_FW_ON_INIT)
1972static int orinoco_pm_notifier(struct notifier_block *notifier,
1973 unsigned long pm_event,
1974 void *unused)
1975{
1976 struct orinoco_private *priv = container_of(notifier,
1977 struct orinoco_private,
1978 pm_notifier);
1979
1980 /* All we need to do is cache the firmware before suspend, and
1981 * release it when we come out.
1982 *
1983 * Only need to do this if we're downloading firmware. */
1984 if (!priv->do_fw_download)
1985 return NOTIFY_DONE;
1986
1987 switch (pm_event) {
1988 case PM_HIBERNATION_PREPARE:
1989 case PM_SUSPEND_PREPARE:
1990 orinoco_cache_fw(priv, 0);
1991 break;
1992
1993 case PM_POST_RESTORE:
1994 /* Restore from hibernation failed. We need to clean
1995 * up in exactly the same way, so fall through. */
1996 case PM_POST_HIBERNATION:
1997 case PM_POST_SUSPEND:
1998 orinoco_uncache_fw(priv);
1999 break;
2000
2001 case PM_RESTORE_PREPARE:
2002 default:
2003 break;
2004 }
2005
2006 return NOTIFY_DONE;
2007}
David S. Millerf11c1792009-02-25 00:02:05 -08002008
2009static void orinoco_register_pm_notifier(struct orinoco_private *priv)
2010{
2011 priv->pm_notifier.notifier_call = orinoco_pm_notifier;
2012 register_pm_notifier(&priv->pm_notifier);
2013}
2014
2015static void orinoco_unregister_pm_notifier(struct orinoco_private *priv)
2016{
2017 unregister_pm_notifier(&priv->pm_notifier);
2018}
David Kilroy39d1ffe2008-11-22 10:37:28 +00002019#else /* !PM_SLEEP || HERMES_CACHE_FW_ON_INIT */
Pavel Roskin933d5942011-07-13 11:19:57 -04002020#define orinoco_register_pm_notifier(priv) do { } while (0)
2021#define orinoco_unregister_pm_notifier(priv) do { } while (0)
David Kilroy39d1ffe2008-11-22 10:37:28 +00002022#endif
2023
2024/********************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -07002025/* Initialization */
2026/********************************************************************/
2027
David Kilroy8e638262009-06-18 23:21:24 +01002028int orinoco_init(struct orinoco_private *priv)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002029{
David Kilroy8e638262009-06-18 23:21:24 +01002030 struct device *dev = priv->dev;
David Kilroyea60a6a2009-06-18 23:21:26 +01002031 struct wiphy *wiphy = priv_to_wiphy(priv);
Pavel Roskin933d5942011-07-13 11:19:57 -04002032 struct hermes *hw = &priv->hw;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002033 int err = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002034
Linus Torvalds1da177e2005-04-16 15:20:36 -07002035 /* No need to lock, the hw_unavailable flag is already set in
2036 * alloc_orinocodev() */
Johannes Berg2c7060022008-10-30 22:09:54 +01002037 priv->nicbuf_size = IEEE80211_MAX_FRAME_LEN + ETH_HLEN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002038
2039 /* Initialize the firmware */
David Kilroyb42f2072010-05-01 14:05:38 +01002040 err = hw->ops->init(hw);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002041 if (err != 0) {
David Kilroy8e638262009-06-18 23:21:24 +01002042 dev_err(dev, "Failed to initialize firmware (err = %d)\n",
2043 err);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002044 goto out;
2045 }
2046
David Kilroy3414fc32009-10-07 22:23:32 +01002047 err = determine_fw_capabilities(priv, wiphy->fw_version,
2048 sizeof(wiphy->fw_version),
2049 &wiphy->hw_version);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002050 if (err != 0) {
David Kilroy8e638262009-06-18 23:21:24 +01002051 dev_err(dev, "Incompatible firmware, aborting\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002052 goto out;
2053 }
2054
David Kilroy3994d502008-08-21 23:27:54 +01002055 if (priv->do_fw_download) {
David Kilroy39d1ffe2008-11-22 10:37:28 +00002056#ifdef CONFIG_HERMES_CACHE_FW_ON_INIT
David Kilroy74734312008-11-22 10:37:25 +00002057 orinoco_cache_fw(priv, 0);
David Kilroy39d1ffe2008-11-22 10:37:28 +00002058#endif
David Kilroy74734312008-11-22 10:37:25 +00002059
David Kilroy3994d502008-08-21 23:27:54 +01002060 err = orinoco_download(priv);
2061 if (err)
2062 priv->do_fw_download = 0;
2063
2064 /* Check firmware version again */
David Kilroy3414fc32009-10-07 22:23:32 +01002065 err = determine_fw_capabilities(priv, wiphy->fw_version,
2066 sizeof(wiphy->fw_version),
2067 &wiphy->hw_version);
David Kilroy3994d502008-08-21 23:27:54 +01002068 if (err != 0) {
David Kilroy8e638262009-06-18 23:21:24 +01002069 dev_err(dev, "Incompatible firmware, aborting\n");
David Kilroy3994d502008-08-21 23:27:54 +01002070 goto out;
2071 }
2072 }
2073
Linus Torvalds1da177e2005-04-16 15:20:36 -07002074 if (priv->has_port3)
David Kilroy8e638262009-06-18 23:21:24 +01002075 dev_info(dev, "Ad-hoc demo mode supported\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002076 if (priv->has_ibss)
David Kilroy8e638262009-06-18 23:21:24 +01002077 dev_info(dev, "IEEE standard IBSS ad-hoc mode supported\n");
2078 if (priv->has_wep)
2079 dev_info(dev, "WEP supported, %s-bit key\n",
2080 priv->has_big_wep ? "104" : "40");
David Kilroy23edcc42008-08-21 23:28:05 +01002081 if (priv->has_wpa) {
David Kilroy8e638262009-06-18 23:21:24 +01002082 dev_info(dev, "WPA-PSK supported\n");
David Kilroy23edcc42008-08-21 23:28:05 +01002083 if (orinoco_mic_init(priv)) {
David Kilroy8e638262009-06-18 23:21:24 +01002084 dev_err(dev, "Failed to setup MIC crypto algorithm. "
2085 "Disabling WPA support\n");
David Kilroy23edcc42008-08-21 23:28:05 +01002086 priv->has_wpa = 0;
2087 }
2088 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002089
David Kilroyea60a6a2009-06-18 23:21:26 +01002090 err = orinoco_hw_read_card_settings(priv, wiphy->perm_addr);
David Kilroye9e3d012009-06-18 23:21:19 +01002091 if (err)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002092 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002093
David Kilroy42a51b92009-06-18 23:21:20 +01002094 err = orinoco_hw_allocate_fid(priv);
Pavel Roskin37a6c612006-04-07 04:10:49 -04002095 if (err) {
David Kilroy8e638262009-06-18 23:21:24 +01002096 dev_err(dev, "Failed to allocate NIC buffer!\n");
Pavel Roskin37a6c612006-04-07 04:10:49 -04002097 goto out;
2098 }
2099
Linus Torvalds1da177e2005-04-16 15:20:36 -07002100 /* Set up the default configuration */
David Kilroy5217c572009-06-18 23:21:32 +01002101 priv->iw_mode = NL80211_IFTYPE_STATION;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002102 /* By default use IEEE/IBSS ad-hoc mode if we have it */
David Kilroya94e8422009-02-04 23:05:44 +00002103 priv->prefer_port3 = priv->has_port3 && (!priv->has_ibss);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002104 set_port_type(priv);
David Gibsond51d8b12005-05-12 20:03:36 -04002105 priv->channel = 0; /* use firmware default */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002106
2107 priv->promiscuous = 0;
David Kilroy5c9f41e2009-08-05 21:23:28 +01002108 priv->encode_alg = ORINOCO_ALG_NONE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002109 priv->tx_key = 0;
David Kilroyd03032a2008-08-21 23:28:02 +01002110 priv->wpa_enabled = 0;
2111 priv->tkip_cm_active = 0;
2112 priv->key_mgmt = 0;
2113 priv->wpa_ie_len = 0;
2114 priv->wpa_ie = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002115
David Kilroyea60a6a2009-06-18 23:21:26 +01002116 if (orinoco_wiphy_register(wiphy)) {
2117 err = -ENODEV;
2118 goto out;
2119 }
2120
Linus Torvalds1da177e2005-04-16 15:20:36 -07002121 /* Make the hardware available, as long as it hasn't been
2122 * removed elsewhere (e.g. by PCMCIA hot unplug) */
David Kilroybcad6e82010-05-01 14:05:40 +01002123 orinoco_lock_irq(priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002124 priv->hw_unavailable--;
David Kilroybcad6e82010-05-01 14:05:40 +01002125 orinoco_unlock_irq(priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002126
David Kilroy8e638262009-06-18 23:21:24 +01002127 dev_dbg(dev, "Ready\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002128
2129 out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002130 return err;
2131}
David Kilroy8e638262009-06-18 23:21:24 +01002132EXPORT_SYMBOL(orinoco_init);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002133
Andrey Borzenkov89ea4092009-01-21 20:46:46 +03002134static const struct net_device_ops orinoco_netdev_ops = {
Andrey Borzenkov89ea4092009-01-21 20:46:46 +03002135 .ndo_open = orinoco_open,
2136 .ndo_stop = orinoco_stop,
2137 .ndo_start_xmit = orinoco_xmit,
Jiri Pirkoafc4b132011-08-16 06:29:01 +00002138 .ndo_set_rx_mode = orinoco_set_multicast_list,
Andrey Borzenkov89ea4092009-01-21 20:46:46 +03002139 .ndo_change_mtu = orinoco_change_mtu,
Ben Hutchings240c1022009-07-09 17:54:35 +00002140 .ndo_set_mac_address = eth_mac_addr,
2141 .ndo_validate_addr = eth_validate_addr,
Andrey Borzenkov89ea4092009-01-21 20:46:46 +03002142 .ndo_tx_timeout = orinoco_tx_timeout,
2143 .ndo_get_stats = orinoco_get_stats,
2144};
2145
David Kilroyea60a6a2009-06-18 23:21:26 +01002146/* Allocate private data.
2147 *
2148 * This driver has a number of structures associated with it
2149 * netdev - Net device structure for each network interface
2150 * wiphy - structure associated with wireless phy
2151 * wireless_dev (wdev) - structure for each wireless interface
2152 * hw - structure for hermes chip info
2153 * card - card specific structure for use by the card driver
2154 * (airport, orinoco_cs)
2155 * priv - orinoco private data
2156 * device - generic linux device structure
2157 *
2158 * +---------+ +---------+
2159 * | wiphy | | netdev |
2160 * | +-------+ | +-------+
2161 * | | priv | | | wdev |
2162 * | | +-----+ +-+-------+
2163 * | | | hw |
2164 * | +-+-----+
2165 * | | card |
2166 * +-+-------+
2167 *
2168 * priv has a link to netdev and device
2169 * wdev has a link to wiphy
2170 */
David Kilroya2608362009-06-18 23:21:23 +01002171struct orinoco_private
David Kilroy3994d502008-08-21 23:27:54 +01002172*alloc_orinocodev(int sizeof_card,
2173 struct device *device,
2174 int (*hard_reset)(struct orinoco_private *),
2175 int (*stop_fw)(struct orinoco_private *, int))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002176{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002177 struct orinoco_private *priv;
David Kilroyea60a6a2009-06-18 23:21:26 +01002178 struct wiphy *wiphy;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002179
David Kilroyea60a6a2009-06-18 23:21:26 +01002180 /* allocate wiphy
2181 * NOTE: We only support a single virtual interface
2182 * but this may change when monitor mode is added
2183 */
2184 wiphy = wiphy_new(&orinoco_cfg_ops,
2185 sizeof(struct orinoco_private) + sizeof_card);
2186 if (!wiphy)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002187 return NULL;
David Kilroyea60a6a2009-06-18 23:21:26 +01002188
David Kilroyea60a6a2009-06-18 23:21:26 +01002189 priv = wiphy_priv(wiphy);
David Kilroy53819562009-06-18 23:21:28 +01002190 priv->dev = device;
David Kilroyea60a6a2009-06-18 23:21:26 +01002191
Linus Torvalds1da177e2005-04-16 15:20:36 -07002192 if (sizeof_card)
Christoph Hellwig84d8a2f2005-05-14 17:30:22 +02002193 priv->card = (void *)((unsigned long)priv
Linus Torvalds1da177e2005-04-16 15:20:36 -07002194 + sizeof(struct orinoco_private));
2195 else
2196 priv->card = NULL;
2197
David Kilroyea60a6a2009-06-18 23:21:26 +01002198 orinoco_wiphy_init(wiphy);
2199
Pavel Roskin343c6862005-09-09 18:43:02 -04002200#ifdef WIRELESS_SPY
2201 priv->wireless_data.spy_data = &priv->spy_data;
Pavel Roskin343c6862005-09-09 18:43:02 -04002202#endif
David Kilroy23edcc42008-08-21 23:28:05 +01002203
Linus Torvalds1da177e2005-04-16 15:20:36 -07002204 /* Set up default callbacks */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002205 priv->hard_reset = hard_reset;
David Kilroy3994d502008-08-21 23:27:54 +01002206 priv->stop_fw = stop_fw;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002207
2208 spin_lock_init(&priv->lock);
2209 priv->open = 0;
2210 priv->hw_unavailable = 1; /* orinoco_init() must clear this
2211 * before anything else touches the
2212 * hardware */
David Howellsc4028952006-11-22 14:57:56 +00002213 INIT_WORK(&priv->reset_work, orinoco_reset);
2214 INIT_WORK(&priv->join_work, orinoco_join_ap);
2215 INIT_WORK(&priv->wevent_work, orinoco_send_wevents);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002216
David Kilroy31afcef2008-08-21 23:28:04 +01002217 INIT_LIST_HEAD(&priv->rx_list);
2218 tasklet_init(&priv->rx_tasklet, orinoco_rx_isr_tasklet,
David Kilroy53819562009-06-18 23:21:28 +01002219 (unsigned long) priv);
David Kilroy31afcef2008-08-21 23:28:04 +01002220
David Kilroyc63cdbe2009-06-18 23:21:33 +01002221 spin_lock_init(&priv->scan_lock);
2222 INIT_LIST_HEAD(&priv->scan_list);
2223 INIT_WORK(&priv->process_scan, orinoco_process_scan_results);
2224
Linus Torvalds1da177e2005-04-16 15:20:36 -07002225 priv->last_linkstatus = 0xffff;
2226
Andrey Borzenkov2bfc5cb2009-02-28 23:09:09 +03002227#if defined(CONFIG_HERMES_CACHE_FW_ON_INIT) || defined(CONFIG_PM_SLEEP)
David Kilroy2cea7b22008-11-22 10:37:26 +00002228 priv->cached_pri_fw = NULL;
Andrey Borzenkov4fb30782008-10-19 12:06:11 +04002229 priv->cached_fw = NULL;
Andrey Borzenkov2bfc5cb2009-02-28 23:09:09 +03002230#endif
Andrey Borzenkov4fb30782008-10-19 12:06:11 +04002231
David Kilroy39d1ffe2008-11-22 10:37:28 +00002232 /* Register PM notifiers */
David S. Millerf11c1792009-02-25 00:02:05 -08002233 orinoco_register_pm_notifier(priv);
David Kilroy39d1ffe2008-11-22 10:37:28 +00002234
David Kilroya2608362009-06-18 23:21:23 +01002235 return priv;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002236}
David Kilroy21312662009-02-04 23:05:47 +00002237EXPORT_SYMBOL(alloc_orinocodev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002238
David Kilroy53819562009-06-18 23:21:28 +01002239/* We can only support a single interface. We provide a separate
2240 * function to set it up to distinguish between hardware
2241 * initialisation and interface setup.
2242 *
2243 * The base_addr and irq parameters are passed on to netdev for use
2244 * with SIOCGIFMAP.
2245 */
2246int orinoco_if_add(struct orinoco_private *priv,
2247 unsigned long base_addr,
David Kilroy593ef092010-05-01 14:05:39 +01002248 unsigned int irq,
2249 const struct net_device_ops *ops)
David Kilroy53819562009-06-18 23:21:28 +01002250{
2251 struct wiphy *wiphy = priv_to_wiphy(priv);
2252 struct wireless_dev *wdev;
2253 struct net_device *dev;
2254 int ret;
2255
2256 dev = alloc_etherdev(sizeof(struct wireless_dev));
2257
2258 if (!dev)
2259 return -ENOMEM;
2260
2261 /* Initialise wireless_dev */
2262 wdev = netdev_priv(dev);
2263 wdev->wiphy = wiphy;
2264 wdev->iftype = NL80211_IFTYPE_STATION;
2265
2266 /* Setup / override net_device fields */
2267 dev->ieee80211_ptr = wdev;
David Kilroy53819562009-06-18 23:21:28 +01002268 dev->watchdog_timeo = HZ; /* 1 second timeout */
David Kilroy53819562009-06-18 23:21:28 +01002269 dev->wireless_handlers = &orinoco_handler_def;
2270#ifdef WIRELESS_SPY
2271 dev->wireless_data = &priv->wireless_data;
2272#endif
David Kilroy593ef092010-05-01 14:05:39 +01002273 /* Default to standard ops if not set */
2274 if (ops)
2275 dev->netdev_ops = ops;
2276 else
2277 dev->netdev_ops = &orinoco_netdev_ops;
2278
David Kilroy53819562009-06-18 23:21:28 +01002279 /* we use the default eth_mac_addr for setting the MAC addr */
2280
2281 /* Reserve space in skb for the SNAP header */
David Kilroybac6faf2010-05-04 22:54:41 +01002282 dev->needed_headroom = ENCAPS_OVERHEAD;
David Kilroy53819562009-06-18 23:21:28 +01002283
2284 netif_carrier_off(dev);
2285
2286 memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
John W. Linvillecf32ed92009-10-06 16:47:23 -04002287 memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
David Kilroy53819562009-06-18 23:21:28 +01002288
2289 dev->base_addr = base_addr;
2290 dev->irq = irq;
2291
2292 SET_NETDEV_DEV(dev, priv->dev);
2293 ret = register_netdev(dev);
2294 if (ret)
2295 goto fail;
2296
2297 priv->ndev = dev;
2298
2299 /* Report what we've done */
2300 dev_dbg(priv->dev, "Registerred interface %s.\n", dev->name);
2301
2302 return 0;
2303
2304 fail:
2305 free_netdev(dev);
2306 return ret;
2307}
2308EXPORT_SYMBOL(orinoco_if_add);
2309
2310void orinoco_if_del(struct orinoco_private *priv)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002311{
David Kilroya2608362009-06-18 23:21:23 +01002312 struct net_device *dev = priv->ndev;
David Kilroy53819562009-06-18 23:21:28 +01002313
2314 unregister_netdev(dev);
2315 free_netdev(dev);
2316}
2317EXPORT_SYMBOL(orinoco_if_del);
2318
2319void free_orinocodev(struct orinoco_private *priv)
2320{
David Kilroyea60a6a2009-06-18 23:21:26 +01002321 struct wiphy *wiphy = priv_to_wiphy(priv);
David Kilroy20953ad2009-01-07 00:23:55 +00002322 struct orinoco_rx_data *rx_data, *temp;
David Kilroyc63cdbe2009-06-18 23:21:33 +01002323 struct orinoco_scan_data *sd, *sdtemp;
Christoph Hellwig95dd91f2005-06-19 01:27:56 +02002324
David Kilroyea60a6a2009-06-18 23:21:26 +01002325 wiphy_unregister(wiphy);
2326
David Kilroy20953ad2009-01-07 00:23:55 +00002327 /* If the tasklet is scheduled when we call tasklet_kill it
2328 * will run one final time. However the tasklet will only
2329 * drain priv->rx_list if the hw is still available. */
David Kilroy31afcef2008-08-21 23:28:04 +01002330 tasklet_kill(&priv->rx_tasklet);
David Kilroy74734312008-11-22 10:37:25 +00002331
David Kilroy20953ad2009-01-07 00:23:55 +00002332 /* Explicitly drain priv->rx_list */
2333 list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) {
2334 list_del(&rx_data->list);
2335
2336 dev_kfree_skb(rx_data->skb);
2337 kfree(rx_data->desc);
2338 kfree(rx_data);
2339 }
2340
David Kilroyc63cdbe2009-06-18 23:21:33 +01002341 cancel_work_sync(&priv->process_scan);
2342 /* Explicitly drain priv->scan_list */
2343 list_for_each_entry_safe(sd, sdtemp, &priv->scan_list, list) {
2344 list_del(&sd->list);
2345
2346 if ((sd->len > 0) && sd->buf)
2347 kfree(sd->buf);
2348 kfree(sd);
2349 }
2350
David S. Millerf11c1792009-02-25 00:02:05 -08002351 orinoco_unregister_pm_notifier(priv);
David Kilroy74734312008-11-22 10:37:25 +00002352 orinoco_uncache_fw(priv);
2353
David Kilroyd03032a2008-08-21 23:28:02 +01002354 priv->wpa_ie_len = 0;
2355 kfree(priv->wpa_ie);
David Kilroy23edcc42008-08-21 23:28:05 +01002356 orinoco_mic_free(priv);
David Kilroyea60a6a2009-06-18 23:21:26 +01002357 wiphy_free(wiphy);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002358}
David Kilroy21312662009-02-04 23:05:47 +00002359EXPORT_SYMBOL(free_orinocodev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002360
David Kilroy6415f7d2009-06-18 23:21:30 +01002361int orinoco_up(struct orinoco_private *priv)
2362{
2363 struct net_device *dev = priv->ndev;
2364 unsigned long flags;
2365 int err;
2366
David Kilroybcad6e82010-05-01 14:05:40 +01002367 priv->hw.ops->lock_irqsave(&priv->lock, &flags);
David Kilroy6415f7d2009-06-18 23:21:30 +01002368
2369 err = orinoco_reinit_firmware(priv);
2370 if (err) {
2371 printk(KERN_ERR "%s: Error %d re-initializing firmware\n",
2372 dev->name, err);
2373 goto exit;
2374 }
2375
2376 netif_device_attach(dev);
2377 priv->hw_unavailable--;
2378
2379 if (priv->open && !priv->hw_unavailable) {
2380 err = __orinoco_up(priv);
2381 if (err)
2382 printk(KERN_ERR "%s: Error %d restarting card\n",
2383 dev->name, err);
2384 }
2385
2386exit:
David Kilroybcad6e82010-05-01 14:05:40 +01002387 priv->hw.ops->unlock_irqrestore(&priv->lock, &flags);
David Kilroy6415f7d2009-06-18 23:21:30 +01002388
2389 return 0;
2390}
2391EXPORT_SYMBOL(orinoco_up);
2392
2393void orinoco_down(struct orinoco_private *priv)
2394{
2395 struct net_device *dev = priv->ndev;
2396 unsigned long flags;
2397 int err;
2398
David Kilroybcad6e82010-05-01 14:05:40 +01002399 priv->hw.ops->lock_irqsave(&priv->lock, &flags);
David Kilroy6415f7d2009-06-18 23:21:30 +01002400 err = __orinoco_down(priv);
2401 if (err)
2402 printk(KERN_WARNING "%s: Error %d downing interface\n",
2403 dev->name, err);
2404
2405 netif_device_detach(dev);
2406 priv->hw_unavailable++;
David Kilroybcad6e82010-05-01 14:05:40 +01002407 priv->hw.ops->unlock_irqrestore(&priv->lock, &flags);
David Kilroy6415f7d2009-06-18 23:21:30 +01002408}
2409EXPORT_SYMBOL(orinoco_down);
2410
Linus Torvalds1da177e2005-04-16 15:20:36 -07002411/********************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -07002412/* Module initialization */
2413/********************************************************************/
2414
Linus Torvalds1da177e2005-04-16 15:20:36 -07002415/* Can't be declared "const" or the whole __initdata section will
2416 * become const */
2417static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
2418 " (David Gibson <hermes@gibson.dropbear.id.au>, "
2419 "Pavel Roskin <proski@gnu.org>, et al)";
2420
2421static int __init init_orinoco(void)
2422{
2423 printk(KERN_DEBUG "%s\n", version);
2424 return 0;
2425}
2426
2427static void __exit exit_orinoco(void)
2428{
2429}
2430
2431module_init(init_orinoco);
2432module_exit(exit_orinoco);