Merge branch 'atmel'
[linux-2.6.git] / drivers / net / wireless / atmel.c
1 /*** -*- linux-c -*- **********************************************************
2
3      Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
4
5         Copyright 2000-2001 ATMEL Corporation.
6         Copyright 2003-2004 Simon Kelley.
7
8     This code was developed from version 2.1.1 of the Atmel drivers, 
9     released by Atmel corp. under the GPL in December 2002. It also 
10     includes code from the Linux aironet drivers (C) Benjamin Reed, 
11     and the Linux PCMCIA package, (C) David Hinds and the Linux wireless
12     extensions, (C) Jean Tourrilhes.
13
14     The firmware module for reading the MAC address of the card comes from
15     net.russotto.AtmelMACFW, written by Matthew T. Russotto and copyright
16     by him. net.russotto.AtmelMACFW is used under the GPL license version 2.
17     This file contains the module in binary form and, under the terms
18     of the GPL, in source form. The source is located at the end of the file.
19
20     This program is free software; you can redistribute it and/or modify
21     it under the terms of the GNU General Public License as published by
22     the Free Software Foundation; either version 2 of the License, or
23     (at your option) any later version.
24
25     This software is distributed in the hope that it will be useful,
26     but WITHOUT ANY WARRANTY; without even the implied warranty of
27     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
28     GNU General Public License for more details.
29
30     You should have received a copy of the GNU General Public License
31     along with Atmel wireless lan drivers; if not, write to the Free Software
32     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
33
34     For all queries about this code, please contact the current author, 
35     Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
36
37     Credit is due to HP UK and Cambridge Online Systems Ltd for supplying
38     hardware used during development of this driver.
39
40 ******************************************************************************/
41
42 #include <linux/config.h>
43 #include <linux/init.h>
44
45 #include <linux/kernel.h>
46 #include <linux/sched.h>
47 #include <linux/ptrace.h>
48 #include <linux/slab.h>
49 #include <linux/string.h>
50 #include <linux/ctype.h>
51 #include <linux/timer.h>
52 #include <asm/io.h>
53 #include <asm/system.h>
54 #include <asm/uaccess.h>
55 #include <linux/module.h>
56 #include <linux/netdevice.h>
57 #include <linux/etherdevice.h>
58 #include <linux/skbuff.h>
59 #include <linux/if_arp.h>
60 #include <linux/ioport.h>
61 #include <linux/fcntl.h>
62 #include <linux/delay.h>
63 #include <linux/wireless.h>
64 #include <net/iw_handler.h>
65 #include <linux/byteorder/generic.h>
66 #include <linux/crc32.h>
67 #include <linux/proc_fs.h>
68 #include <linux/device.h>
69 #include <linux/moduleparam.h>
70 #include <linux/firmware.h>
71 #include <net/ieee80211.h>
72 #include "atmel.h"
73
74 #define DRIVER_MAJOR 0
75 #define DRIVER_MINOR 98
76
77 MODULE_AUTHOR("Simon Kelley");
78 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
79 MODULE_LICENSE("GPL");
80 MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");
81
82 /* The name of the firmware file to be loaded 
83    over-rides any automatic selection */
84 static char *firmware = NULL;
85 module_param(firmware, charp, 0);
86
87 /* table of firmware file names */
88 static struct { 
89         AtmelFWType fw_type;
90         const char *fw_file;
91         const char *fw_file_ext;
92 } fw_table[] = {
93         { ATMEL_FW_TYPE_502,      "atmel_at76c502",      "bin" },
94         { ATMEL_FW_TYPE_502D,     "atmel_at76c502d",     "bin" },
95         { ATMEL_FW_TYPE_502E,     "atmel_at76c502e",     "bin" },
96         { ATMEL_FW_TYPE_502_3COM, "atmel_at76c502_3com", "bin" },
97         { ATMEL_FW_TYPE_504,      "atmel_at76c504",      "bin" },
98         { ATMEL_FW_TYPE_504_2958, "atmel_at76c504_2958", "bin" },
99         { ATMEL_FW_TYPE_504A_2958,"atmel_at76c504a_2958","bin" },
100         { ATMEL_FW_TYPE_506,      "atmel_at76c506",      "bin" },
101         { ATMEL_FW_TYPE_NONE,      NULL,                  NULL }
102 };
103
104 #define MAX_SSID_LENGTH 32
105 #define MGMT_JIFFIES (256 * HZ / 100)
106
107 #define MAX_BSS_ENTRIES 64      
108
109 /* registers */
110 #define GCR  0x00    //      (SIR0)  General Configuration Register        
111 #define BSR  0x02    //      (SIR1)  Bank Switching Select Register 
112 #define AR   0x04
113 #define DR   0x08
114 #define MR1  0x12    //      Mirror Register 1                  
115 #define MR2  0x14    //      Mirror Register 2  
116 #define MR3  0x16    //      Mirror Register 3  
117 #define MR4  0x18    //      Mirror Register 4   
118
119 #define GPR1                            0x0c
120 #define GPR2                            0x0e
121 #define GPR3                            0x10
122 //
123 // Constants for the GCR register.
124 //
125 #define GCR_REMAP     0x0400          // Remap internal SRAM to 0
126 #define GCR_SWRES     0x0080          // BIU reset (ARM and PAI are NOT reset) 
127 #define GCR_CORES     0x0060          // Core Reset (ARM and PAI are reset)
128 #define GCR_ENINT     0x0002          // Enable Interrupts    
129 #define GCR_ACKINT    0x0008          // Acknowledge Interrupts
130
131 #define BSS_SRAM      0x0200          // AMBA module selection --> SRAM
132 #define BSS_IRAM      0x0100          // AMBA module selection --> IRAM
133 //
134 // Constants for the MR registers.
135 //
136 #define MAC_INIT_COMPLETE       0x0001        // MAC init has been completed
137 #define MAC_BOOT_COMPLETE       0x0010        // MAC boot has been completed
138 #define MAC_INIT_OK             0x0002        // MAC boot has been completed
139
140 #define C80211_SUBTYPE_MGMT_ASS_REQUEST                 0x00
141 #define C80211_SUBTYPE_MGMT_ASS_RESPONSE                0x10
142 #define C80211_SUBTYPE_MGMT_REASS_REQUEST               0x20
143 #define C80211_SUBTYPE_MGMT_REASS_RESPONSE              0x30
144 #define C80211_SUBTYPE_MGMT_ProbeRequest                0x40
145 #define C80211_SUBTYPE_MGMT_ProbeResponse               0x50
146 #define C80211_SUBTYPE_MGMT_BEACON                      0x80
147 #define C80211_SUBTYPE_MGMT_ATIM                        0x90
148 #define C80211_SUBTYPE_MGMT_DISASSOSIATION              0xA0
149 #define C80211_SUBTYPE_MGMT_Authentication              0xB0
150 #define C80211_SUBTYPE_MGMT_Deauthentication    0xC0
151
152 #define C80211_MGMT_AAN_OPENSYSTEM              0x0000
153 #define C80211_MGMT_AAN_SHAREDKEY               0x0001
154
155 #define C80211_MGMT_CAPABILITY_ESS              0x0001  // see 802.11 p.58
156 #define C80211_MGMT_CAPABILITY_IBSS             0x0002  //      - " -
157 #define C80211_MGMT_CAPABILITY_CFPollable       0x0004  //      - " -
158 #define C80211_MGMT_CAPABILITY_CFPollRequest    0x0008  //      - " -
159 #define C80211_MGMT_CAPABILITY_Privacy          0x0010  //      - " -
160
161 #define C80211_MGMT_SC_Success                  0
162 #define C80211_MGMT_SC_Unspecified              1
163 #define C80211_MGMT_SC_SupportCapabilities      10
164 #define C80211_MGMT_SC_ReassDenied              11
165 #define C80211_MGMT_SC_AssDenied                12
166 #define C80211_MGMT_SC_AuthAlgNotSupported      13
167 #define C80211_MGMT_SC_AuthTransSeqNumError     14
168 #define C80211_MGMT_SC_AuthRejectChallenge      15
169 #define C80211_MGMT_SC_AuthRejectTimeout        16
170 #define C80211_MGMT_SC_AssDeniedHandleAP        17
171 #define C80211_MGMT_SC_AssDeniedBSSRate         18
172
173 #define C80211_MGMT_ElementID_SSID              0
174 #define C80211_MGMT_ElementID_SupportedRates    1
175 #define C80211_MGMT_ElementID_ChallengeText     16
176 #define C80211_MGMT_CAPABILITY_ShortPreamble    0x0020
177
178 #define MIB_MAX_DATA_BYTES    212
179 #define MIB_HEADER_SIZE       4    /* first four fields */
180
181 struct get_set_mib {
182         u8 type;
183         u8 size;
184         u8 index;
185         u8 reserved;
186         u8 data[MIB_MAX_DATA_BYTES];
187 };
188
189 struct rx_desc {
190         u32          Next;
191         u16          MsduPos;
192         u16          MsduSize;
193         
194         u8           State;
195         u8           Status;
196         u8           Rate;
197         u8           Rssi;
198         u8           LinkQuality;
199         u8           PreambleType;
200         u16          Duration;
201         u32          RxTime;
202
203 };
204
205 #define RX_DESC_FLAG_VALID       0x80
206 #define RX_DESC_FLAG_CONSUMED    0x40
207 #define RX_DESC_FLAG_IDLE        0x00
208
209 #define RX_STATUS_SUCCESS        0x00
210
211 #define RX_DESC_MSDU_POS_OFFSET      4
212 #define RX_DESC_MSDU_SIZE_OFFSET     6
213 #define RX_DESC_FLAGS_OFFSET         8
214 #define RX_DESC_STATUS_OFFSET        9
215 #define RX_DESC_RSSI_OFFSET          11
216 #define RX_DESC_LINK_QUALITY_OFFSET  12
217 #define RX_DESC_PREAMBLE_TYPE_OFFSET 13
218 #define RX_DESC_DURATION_OFFSET      14
219 #define RX_DESC_RX_TIME_OFFSET       16
220
221
222 struct tx_desc {
223         u32       NextDescriptor;
224         u16       TxStartOfFrame;
225         u16       TxLength;
226         
227         u8        TxState;
228         u8        TxStatus;
229         u8        RetryCount;
230         
231         u8        TxRate;
232
233         u8        KeyIndex;
234         u8        ChiperType;
235         u8        ChipreLength;
236         u8        Reserved1;
237
238         u8        Reserved;
239         u8        PacketType;
240         u16       HostTxLength;
241         
242 };
243
244
245 #define TX_DESC_NEXT_OFFSET          0
246 #define TX_DESC_POS_OFFSET           4
247 #define TX_DESC_SIZE_OFFSET          6
248 #define TX_DESC_FLAGS_OFFSET         8
249 #define TX_DESC_STATUS_OFFSET        9
250 #define TX_DESC_RETRY_OFFSET         10
251 #define TX_DESC_RATE_OFFSET          11
252 #define TX_DESC_KEY_INDEX_OFFSET     12
253 #define TX_DESC_CIPHER_TYPE_OFFSET   13
254 #define TX_DESC_CIPHER_LENGTH_OFFSET 14
255 #define TX_DESC_PACKET_TYPE_OFFSET   17
256 #define TX_DESC_HOST_LENGTH_OFFSET   18
257
258
259
260 ///////////////////////////////////////////////////////
261 // Host-MAC interface
262 ///////////////////////////////////////////////////////
263
264 #define TX_STATUS_SUCCESS       0x00
265
266 #define TX_FIRM_OWN             0x80
267 #define TX_DONE                 0x40
268
269
270 #define TX_ERROR                0x01
271
272 #define TX_PACKET_TYPE_DATA     0x01
273 #define TX_PACKET_TYPE_MGMT     0x02
274
275 #define ISR_EMPTY               0x00        // no bits set in ISR
276 #define ISR_TxCOMPLETE          0x01        // packet transmitted
277 #define ISR_RxCOMPLETE          0x02        // packet received
278 #define ISR_RxFRAMELOST         0x04        // Rx Frame lost
279 #define ISR_FATAL_ERROR         0x08        // Fatal error
280 #define ISR_COMMAND_COMPLETE    0x10        // command completed
281 #define ISR_OUT_OF_RANGE        0x20        // command completed
282 #define ISR_IBSS_MERGE          0x40        // (4.1.2.30): IBSS merge
283 #define ISR_GENERIC_IRQ         0x80                
284
285
286 #define Local_Mib_Type          0x01
287 #define Mac_Address_Mib_Type    0x02
288 #define Mac_Mib_Type            0x03
289 #define Statistics_Mib_Type     0x04
290 #define Mac_Mgmt_Mib_Type       0x05
291 #define Mac_Wep_Mib_Type        0x06
292 #define Phy_Mib_Type            0x07
293 #define Multi_Domain_MIB        0x08
294
295 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
296 #define MAC_MIB_FRAG_THRESHOLD_POS            8
297 #define MAC_MIB_RTS_THRESHOLD_POS             10
298 #define MAC_MIB_SHORT_RETRY_POS               16
299 #define MAC_MIB_LONG_RETRY_POS                17
300 #define MAC_MIB_SHORT_RETRY_LIMIT_POS         16
301 #define MAC_MGMT_MIB_BEACON_PER_POS           0
302 #define MAC_MGMT_MIB_STATION_ID_POS           6
303 #define MAC_MGMT_MIB_CUR_PRIVACY_POS          11
304 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
305 #define MAC_MGMT_MIB_PS_MODE_POS              53
306 #define MAC_MGMT_MIB_LISTEN_INTERVAL_POS      54
307 #define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
308 #define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED     57
309 #define PHY_MIB_CHANNEL_POS                   14
310 #define PHY_MIB_RATE_SET_POS                  20
311 #define PHY_MIB_REG_DOMAIN_POS                26
312 #define LOCAL_MIB_AUTO_TX_RATE_POS            3
313 #define LOCAL_MIB_SSID_SIZE                   5
314 #define LOCAL_MIB_TX_PROMISCUOUS_POS          6
315 #define LOCAL_MIB_TX_MGMT_RATE_POS            7
316 #define LOCAL_MIB_TX_CONTROL_RATE_POS         8
317 #define LOCAL_MIB_PREAMBLE_TYPE               9
318 #define MAC_ADDR_MIB_MAC_ADDR_POS             0
319
320
321 #define         CMD_Set_MIB_Vars              0x01
322 #define         CMD_Get_MIB_Vars              0x02
323 #define         CMD_Scan                      0x03
324 #define         CMD_Join                      0x04
325 #define         CMD_Start                     0x05
326 #define         CMD_EnableRadio               0x06
327 #define         CMD_DisableRadio              0x07
328 #define         CMD_SiteSurvey                0x0B
329
330 #define         CMD_STATUS_IDLE                   0x00
331 #define         CMD_STATUS_COMPLETE               0x01
332 #define         CMD_STATUS_UNKNOWN                0x02
333 #define         CMD_STATUS_INVALID_PARAMETER      0x03
334 #define         CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
335 #define         CMD_STATUS_TIME_OUT               0x07
336 #define         CMD_STATUS_IN_PROGRESS            0x08
337 #define         CMD_STATUS_REJECTED_RADIO_OFF     0x09
338 #define         CMD_STATUS_HOST_ERROR             0xFF
339 #define         CMD_STATUS_BUSY                   0xFE
340
341
342 #define CMD_BLOCK_COMMAND_OFFSET        0
343 #define CMD_BLOCK_STATUS_OFFSET         1
344 #define CMD_BLOCK_PARAMETERS_OFFSET     4
345
346 #define SCAN_OPTIONS_SITE_SURVEY        0x80
347
348 #define MGMT_FRAME_BODY_OFFSET          24
349 #define MAX_AUTHENTICATION_RETRIES      3
350 #define MAX_ASSOCIATION_RETRIES         3
351
352 #define AUTHENTICATION_RESPONSE_TIME_OUT  1000
353
354 #define MAX_WIRELESS_BODY  2316 /* mtu is 2312, CRC is 4 */
355 #define LOOP_RETRY_LIMIT   500000
356
357 #define ACTIVE_MODE     1
358 #define PS_MODE         2
359
360 #define MAX_ENCRYPTION_KEYS 4
361 #define MAX_ENCRYPTION_KEY_SIZE 40
362
363 ///////////////////////////////////////////////////////////////////////////
364 // 802.11 related definitions
365 ///////////////////////////////////////////////////////////////////////////
366
367 //
368 // Regulatory Domains
369 //
370
371 #define REG_DOMAIN_FCC          0x10    //Channels      1-11    USA
372 #define REG_DOMAIN_DOC          0x20    //Channel       1-11    Canada
373 #define REG_DOMAIN_ETSI         0x30    //Channel       1-13    Europe (ex Spain/France)
374 #define REG_DOMAIN_SPAIN        0x31    //Channel       10-11   Spain
375 #define REG_DOMAIN_FRANCE       0x32    //Channel       10-13   France
376 #define REG_DOMAIN_MKK          0x40    //Channel       14      Japan
377 #define REG_DOMAIN_MKK1         0x41    //Channel       1-14    Japan(MKK1)
378 #define REG_DOMAIN_ISRAEL       0x50    //Channel       3-9     ISRAEL
379
380 #define BSS_TYPE_AD_HOC         1
381 #define BSS_TYPE_INFRASTRUCTURE 2
382
383 #define SCAN_TYPE_ACTIVE        0
384 #define SCAN_TYPE_PASSIVE       1
385
386 #define LONG_PREAMBLE           0
387 #define SHORT_PREAMBLE          1
388 #define AUTO_PREAMBLE           2
389
390 #define DATA_FRAME_WS_HEADER_SIZE   30
391
392 /* promiscuous mode control */ 
393 #define PROM_MODE_OFF                   0x0
394 #define PROM_MODE_UNKNOWN               0x1
395 #define PROM_MODE_CRC_FAILED            0x2
396 #define PROM_MODE_DUPLICATED            0x4
397 #define PROM_MODE_MGMT                  0x8
398 #define PROM_MODE_CTRL                  0x10
399 #define PROM_MODE_BAD_PROTOCOL          0x20
400
401
402 #define IFACE_INT_STATUS_OFFSET         0
403 #define IFACE_INT_MASK_OFFSET           1
404 #define IFACE_LOCKOUT_HOST_OFFSET       2
405 #define IFACE_LOCKOUT_MAC_OFFSET        3
406 #define IFACE_FUNC_CTRL_OFFSET          28
407 #define IFACE_MAC_STAT_OFFSET           30
408 #define IFACE_GENERIC_INT_TYPE_OFFSET   32
409
410 #define CIPHER_SUITE_NONE     0 
411 #define CIPHER_SUITE_WEP_64   1
412 #define CIPHER_SUITE_TKIP     2
413 #define CIPHER_SUITE_AES      3
414 #define CIPHER_SUITE_CCX      4
415 #define CIPHER_SUITE_WEP_128  5
416
417 //
418 // IFACE MACROS & definitions
419 //
420 //
421
422 // FuncCtrl field: 
423 //
424 #define FUNC_CTRL_TxENABLE              0x10
425 #define FUNC_CTRL_RxENABLE              0x20
426 #define FUNC_CTRL_INIT_COMPLETE         0x01
427
428 /* A stub firmware image which reads the MAC address from NVRAM on the card.
429    For copyright information and source see the end of this file. */
430 static u8 mac_reader[] = {
431         0x06,0x00,0x00,0xea,0x04,0x00,0x00,0xea,0x03,0x00,0x00,0xea,0x02,0x00,0x00,0xea,
432         0x01,0x00,0x00,0xea,0x00,0x00,0x00,0xea,0xff,0xff,0xff,0xea,0xfe,0xff,0xff,0xea,
433         0xd3,0x00,0xa0,0xe3,0x00,0xf0,0x21,0xe1,0x0e,0x04,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
434         0x81,0x11,0xa0,0xe1,0x00,0x10,0x81,0xe3,0x00,0x10,0x80,0xe5,0x1c,0x10,0x90,0xe5,
435         0x10,0x10,0xc1,0xe3,0x1c,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,0x08,0x10,0x80,0xe5,
436         0x02,0x03,0xa0,0xe3,0x00,0x10,0xa0,0xe3,0xb0,0x10,0xc0,0xe1,0xb4,0x10,0xc0,0xe1,
437         0xb8,0x10,0xc0,0xe1,0xbc,0x10,0xc0,0xe1,0x56,0xdc,0xa0,0xe3,0x21,0x00,0x00,0xeb,
438         0x0a,0x00,0xa0,0xe3,0x1a,0x00,0x00,0xeb,0x10,0x00,0x00,0xeb,0x07,0x00,0x00,0xeb,
439         0x02,0x03,0xa0,0xe3,0x02,0x14,0xa0,0xe3,0xb4,0x10,0xc0,0xe1,0x4c,0x10,0x9f,0xe5,
440         0xbc,0x10,0xc0,0xe1,0x10,0x10,0xa0,0xe3,0xb8,0x10,0xc0,0xe1,0xfe,0xff,0xff,0xea,
441         0x00,0x40,0x2d,0xe9,0x00,0x20,0xa0,0xe3,0x02,0x3c,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
442         0x28,0x00,0x9f,0xe5,0x37,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
443         0x00,0x40,0x2d,0xe9,0x12,0x2e,0xa0,0xe3,0x06,0x30,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
444         0x02,0x04,0xa0,0xe3,0x2f,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
445         0x00,0x02,0x00,0x02,0x80,0x01,0x90,0xe0,0x01,0x00,0x00,0x0a,0x01,0x00,0x50,0xe2,
446         0xfc,0xff,0xff,0xea,0x1e,0xff,0x2f,0xe1,0x80,0x10,0xa0,0xe3,0xf3,0x06,0xa0,0xe3,
447         0x00,0x10,0x80,0xe5,0x00,0x10,0xa0,0xe3,0x00,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,
448         0x04,0x10,0x80,0xe5,0x00,0x10,0x80,0xe5,0x0e,0x34,0xa0,0xe3,0x1c,0x10,0x93,0xe5,
449         0x02,0x1a,0x81,0xe3,0x1c,0x10,0x83,0xe5,0x58,0x11,0x9f,0xe5,0x30,0x10,0x80,0xe5,
450         0x54,0x11,0x9f,0xe5,0x34,0x10,0x80,0xe5,0x38,0x10,0x80,0xe5,0x3c,0x10,0x80,0xe5,
451         0x10,0x10,0x90,0xe5,0x08,0x00,0x90,0xe5,0x1e,0xff,0x2f,0xe1,0xf3,0x16,0xa0,0xe3,
452         0x08,0x00,0x91,0xe5,0x05,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,0x10,0x00,0x91,0xe5,
453         0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0xff,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,
454         0x10,0x00,0x91,0xe5,0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
455         0x10,0x00,0x91,0xe5,0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
456         0xff,0x00,0x00,0xe2,0x1e,0xff,0x2f,0xe1,0x30,0x40,0x2d,0xe9,0x00,0x50,0xa0,0xe1,
457         0x03,0x40,0xa0,0xe1,0xa2,0x02,0xa0,0xe1,0x08,0x00,0x00,0xe2,0x03,0x00,0x80,0xe2,
458         0xd8,0x10,0x9f,0xe5,0x00,0x00,0xc1,0xe5,0x01,0x20,0xc1,0xe5,0xe2,0xff,0xff,0xeb,
459         0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x1a,0x14,0x00,0xa0,0xe3,0xc4,0xff,0xff,0xeb,
460         0x04,0x20,0xa0,0xe1,0x05,0x10,0xa0,0xe1,0x02,0x00,0xa0,0xe3,0x01,0x00,0x00,0xeb,
461         0x30,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x70,0x40,0x2d,0xe9,0xf3,0x46,0xa0,0xe3,
462         0x00,0x30,0xa0,0xe3,0x00,0x00,0x50,0xe3,0x08,0x00,0x00,0x9a,0x8c,0x50,0x9f,0xe5,
463         0x03,0x60,0xd5,0xe7,0x0c,0x60,0x84,0xe5,0x10,0x60,0x94,0xe5,0x02,0x00,0x16,0xe3,
464         0xfc,0xff,0xff,0x0a,0x01,0x30,0x83,0xe2,0x00,0x00,0x53,0xe1,0xf7,0xff,0xff,0x3a,
465         0xff,0x30,0xa0,0xe3,0x0c,0x30,0x84,0xe5,0x08,0x00,0x94,0xe5,0x10,0x00,0x94,0xe5,
466         0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x94,0xe5,0x00,0x00,0xa0,0xe3,
467         0x00,0x00,0x52,0xe3,0x0b,0x00,0x00,0x9a,0x10,0x50,0x94,0xe5,0x02,0x00,0x15,0xe3,
468         0xfc,0xff,0xff,0x0a,0x0c,0x30,0x84,0xe5,0x10,0x50,0x94,0xe5,0x01,0x00,0x15,0xe3,
469         0xfc,0xff,0xff,0x0a,0x08,0x50,0x94,0xe5,0x01,0x50,0xc1,0xe4,0x01,0x00,0x80,0xe2,
470         0x02,0x00,0x50,0xe1,0xf3,0xff,0xff,0x3a,0xc8,0x00,0xa0,0xe3,0x98,0xff,0xff,0xeb,
471         0x70,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x01,0x0c,0x00,0x02,0x01,0x02,0x00,0x02,
472         0x00,0x01,0x00,0x02
473 };
474
475 struct atmel_private {
476         void *card; /* Bus dependent stucture varies for PCcard */
477         int (*present_callback)(void *); /* And callback which uses it */
478         char firmware_id[32];
479         AtmelFWType firmware_type;
480         u8 *firmware;
481         int firmware_length;
482         struct timer_list management_timer;
483         struct net_device *dev;
484         struct device *sys_dev;
485         struct iw_statistics wstats;
486         struct net_device_stats stats;  // device stats
487         spinlock_t irqlock, timerlock;  // spinlocks
488         enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
489         enum { 
490                 CARD_TYPE_PARALLEL_FLASH, 
491                 CARD_TYPE_SPI_FLASH,
492                 CARD_TYPE_EEPROM 
493         } card_type;
494         int do_rx_crc; /* If we need to CRC incoming packets */
495         int probe_crc; /* set if we don't yet know */
496         int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
497         u16 rx_desc_head;
498         u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
499         u16 tx_free_mem, tx_buff_head, tx_buff_tail;
500         
501         u16 frag_seq, frag_len, frag_no;
502         u8 frag_source[6]; 
503         
504         u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
505         u8 group_cipher_suite, pairwise_cipher_suite;
506         u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
507         int wep_key_len[MAX_ENCRYPTION_KEYS]; 
508         int use_wpa, radio_on_broken; /* firmware dependent stuff. */
509
510         u16 host_info_base;
511         struct host_info_struct { 
512                 /* NB this is matched to the hardware, don't change. */
513                 u8 volatile int_status;
514                 u8 volatile int_mask;
515                 u8 volatile lockout_host;
516                 u8 volatile lockout_mac;
517
518                 u16 tx_buff_pos;
519                 u16 tx_buff_size;
520                 u16 tx_desc_pos;
521                 u16 tx_desc_count;
522
523                 u16 rx_buff_pos;
524                 u16 rx_buff_size;
525                 u16 rx_desc_pos;
526                 u16 rx_desc_count;
527                 
528                 u16 build_version;
529                 u16 command_pos;        
530                 
531                 u16 major_version;
532                 u16 minor_version;
533                 
534                 u16 func_ctrl;
535                 u16 mac_status;
536                 u16 generic_IRQ_type;
537                 u8  reserved[2];
538         } host_info;
539
540         enum { 
541                 STATION_STATE_SCANNING,
542                 STATION_STATE_JOINNING,
543                 STATION_STATE_AUTHENTICATING,
544                 STATION_STATE_ASSOCIATING,
545                 STATION_STATE_READY,
546                 STATION_STATE_REASSOCIATING,
547                 STATION_STATE_DOWN,
548                 STATION_STATE_MGMT_ERROR
549         } station_state;
550         
551         int operating_mode, power_mode;
552         time_t last_qual;
553         int beacons_this_sec;
554         int channel;
555         int reg_domain, config_reg_domain;
556         int tx_rate;
557         int auto_tx_rate;
558         int rts_threshold;
559         int frag_threshold;
560         int long_retry, short_retry;
561         int preamble;
562         int default_beacon_period, beacon_period, listen_interval;
563         int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;  
564         int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
565         enum {
566                 SITE_SURVEY_IDLE,
567                 SITE_SURVEY_IN_PROGRESS,
568                 SITE_SURVEY_COMPLETED 
569         } site_survey_state;
570         time_t last_survey;
571
572         int station_was_associated, station_is_associated;
573         int fast_scan;
574                                 
575         struct bss_info {
576                 int channel;
577                 int SSIDsize;
578                 int RSSI;
579                 int UsingWEP;
580                 int preamble;
581                 int beacon_period;
582                 int BSStype;
583                 u8 BSSID[6];
584                 u8 SSID[MAX_SSID_LENGTH];
585         } BSSinfo[MAX_BSS_ENTRIES];
586         int BSS_list_entries, current_BSS;
587         int connect_to_any_BSS; 
588         int SSID_size, new_SSID_size;
589         u8 CurrentBSSID[6], BSSID[6];
590         u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
591         u64 last_beacon_timestamp;
592         u8 rx_buf[MAX_WIRELESS_BODY];
593         
594 };
595
596 static u8 atmel_basic_rates[4] = {0x82,0x84,0x0b,0x16};
597
598 static const struct {
599         int reg_domain;
600         int min, max;
601         char *name; 
602 } channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
603                       { REG_DOMAIN_DOC, 1, 11, "Canada" },
604                       { REG_DOMAIN_ETSI, 1, 13, "Europe" },
605                       { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
606                       { REG_DOMAIN_FRANCE, 10, 13, "France" }, 
607                       { REG_DOMAIN_MKK, 14, 14, "MKK" },
608                       { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
609                       { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
610
611 static void build_wpa_mib(struct atmel_private *priv);
612 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
613 static void atmel_copy_to_card(struct net_device *dev, u16 dest, unsigned char *src, u16 len);
614 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest, u16 src, u16 len);
615 static void atmel_set_gcr(struct net_device *dev, u16 mask);
616 static void atmel_clear_gcr(struct net_device *dev, u16 mask);
617 static int atmel_lock_mac(struct atmel_private *priv);
618 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
619 static void atmel_command_irq(struct atmel_private *priv);
620 static int atmel_validate_channel(struct atmel_private *priv, int channel);
621 static void atmel_management_frame(struct atmel_private *priv, struct ieee80211_hdr_4addr *header, 
622                                    u16 frame_len, u8 rssi);
623 static void atmel_management_timer(u_long a);
624 static void atmel_send_command(struct atmel_private *priv, int command, void *cmd, int cmd_size);
625 static int atmel_send_command_wait(struct atmel_private *priv, int command, void *cmd, int cmd_size);
626 static void atmel_transmit_management_frame(struct atmel_private *priv, struct ieee80211_hdr_4addr *header,
627                                             u8 *body, int body_len);
628
629 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
630 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data);
631 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index, u16 data);
632 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index, u8 *data, int data_len);
633 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index, u8 *data, int data_len);
634 static void atmel_scan(struct atmel_private *priv, int specific_ssid);
635 static void atmel_join_bss(struct atmel_private *priv, int bss_index);
636 static void atmel_smooth_qual(struct atmel_private *priv);
637 static void atmel_writeAR(struct net_device *dev, u16 data);
638 static int probe_atmel_card(struct net_device *dev);
639 static int reset_atmel_card(struct net_device *dev );
640 static void atmel_enter_state(struct atmel_private *priv, int new_state);
641 int atmel_open (struct net_device *dev);
642
643 static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
644 {
645         return priv->host_info_base + offset;
646 }
647
648 static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
649 {
650         return priv->host_info.command_pos + offset;
651 }
652
653 static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16  desc)
654 {
655         return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
656 }
657
658 static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16  desc)
659 {
660         return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
661 }
662
663 static inline u8 atmel_read8(struct net_device *dev, u16 offset)
664 {
665         return inb(dev->base_addr + offset);
666 }
667
668 static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
669 {
670         outb(data, dev->base_addr + offset);
671 }
672
673 static inline u16 atmel_read16(struct net_device *dev, u16 offset)
674 {
675         return inw(dev->base_addr + offset);
676 }
677
678 static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
679 {
680         outw(data, dev->base_addr + offset);
681 }
682
683 static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
684 {
685         atmel_writeAR(priv->dev, pos);  
686         return atmel_read8(priv->dev, DR);
687 }
688
689 static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
690 {
691         atmel_writeAR(priv->dev, pos);  
692         atmel_write8(priv->dev, DR, data);
693 }
694
695 static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
696 {
697         atmel_writeAR(priv->dev, pos);  
698         return atmel_read16(priv->dev, DR);
699 }
700
701 static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
702 {
703         atmel_writeAR(priv->dev, pos);  
704         atmel_write16(priv->dev, DR, data);
705 }
706
707 static const struct iw_handler_def atmel_handler_def;
708
709 static void tx_done_irq(struct atmel_private *priv)
710 {
711         int i;
712
713         for (i = 0; 
714              atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
715                      i < priv->host_info.tx_desc_count;
716              i++) {
717                 
718                 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
719                 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
720                 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
721
722                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
723
724                 priv->tx_free_mem += msdu_size;
725                 priv->tx_desc_free++;
726
727                 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
728                         priv->tx_buff_head = 0;
729                 else
730                         priv->tx_buff_head += msdu_size;
731                         
732                 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
733                         priv->tx_desc_head++ ;                                  
734                 else
735                         priv->tx_desc_head = 0;
736                 
737                 if (type == TX_PACKET_TYPE_DATA) {
738                         if (status == TX_STATUS_SUCCESS)
739                                 priv->stats.tx_packets++;
740                         else 
741                                 priv->stats.tx_errors++;
742                         netif_wake_queue(priv->dev);
743                 }
744         }
745 }
746
747 static u16 find_tx_buff(struct atmel_private *priv, u16 len)
748 {
749         u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
750
751         if (priv->tx_desc_free == 3 || priv->tx_free_mem < len) 
752                 return 0;
753         
754         if (bottom_free >= len)
755                 return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
756         
757         if (priv->tx_free_mem - bottom_free >= len) {
758                 priv->tx_buff_tail = 0;
759                 return priv->host_info.tx_buff_pos;
760         }
761         
762         return 0;
763 }
764
765 static void tx_update_descriptor(struct atmel_private *priv, int is_bcast, u16 len, u16 buff, u8 type)
766 {
767         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
768         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
769         if (!priv->use_wpa)
770                 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
771         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
772         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
773         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
774         if (priv->use_wpa) {
775                 int cipher_type, cipher_length;
776                 if (is_bcast) {
777                         cipher_type = priv->group_cipher_suite;
778                         if (cipher_type == CIPHER_SUITE_WEP_64 || 
779                             cipher_type == CIPHER_SUITE_WEP_128 )
780                                 cipher_length = 8;
781                         else if (cipher_type == CIPHER_SUITE_TKIP)
782                                 cipher_length = 12;
783                         else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
784                                  priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
785                                 cipher_type = priv->pairwise_cipher_suite;
786                                 cipher_length = 8;
787                         } else {
788                                 cipher_type = CIPHER_SUITE_NONE;
789                                 cipher_length = 0;
790                         }
791                 } else {
792                         cipher_type = priv->pairwise_cipher_suite;
793                         if (cipher_type == CIPHER_SUITE_WEP_64 || 
794                             cipher_type == CIPHER_SUITE_WEP_128 )
795                                 cipher_length = 8;
796                         else if (cipher_type == CIPHER_SUITE_TKIP)
797                                 cipher_length = 12;
798                         else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
799                                  priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
800                                 cipher_type = priv->group_cipher_suite;
801                                 cipher_length = 8;
802                         } else {
803                                 cipher_type = CIPHER_SUITE_NONE;
804                                 cipher_length = 0;
805                         }
806                 }
807                 
808                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
809                             cipher_type);       
810                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
811                             cipher_length);
812         }
813         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
814         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
815         if (priv->tx_desc_previous != priv->tx_desc_tail)
816                 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
817         priv->tx_desc_previous = priv->tx_desc_tail;
818         if (priv->tx_desc_tail < (priv->host_info.tx_desc_count -1 ))
819                 priv->tx_desc_tail++;
820         else
821                 priv->tx_desc_tail = 0;
822         priv->tx_desc_free--;
823         priv->tx_free_mem -= len;
824
825 }
826
827 static int start_tx (struct sk_buff *skb, struct net_device *dev)
828 {
829         struct atmel_private *priv = netdev_priv(dev);
830         struct ieee80211_hdr_4addr header;
831         unsigned long flags;
832         u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
833         u8 SNAP_RFC1024[6] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
834  
835         if (priv->card && priv->present_callback && 
836             !(*priv->present_callback)(priv->card)) {
837                 priv->stats.tx_errors++;
838                 dev_kfree_skb(skb);
839                 return 0;
840         }
841         
842         if (priv->station_state != STATION_STATE_READY) {
843                 priv->stats.tx_errors++;
844                 dev_kfree_skb(skb);
845                 return 0;
846         }
847         
848         /* first ensure the timer func cannot run */
849         spin_lock_bh(&priv->timerlock); 
850         /* then stop the hardware ISR */
851         spin_lock_irqsave(&priv->irqlock, flags); 
852         /* nb doing the above in the opposite order will deadlock */
853         
854         /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
855            12 first bytes (containing DA/SA) and put them in the appropriate fields of
856            the Wireless Header. Thus the packet length is then the initial + 18 (+30-12) */
857         
858         if (!(buff = find_tx_buff(priv, len + 18))) {
859                 priv->stats.tx_dropped++;
860                 spin_unlock_irqrestore(&priv->irqlock, flags);
861                 spin_unlock_bh(&priv->timerlock);
862                 netif_stop_queue(dev);
863                 return 1;
864         }
865         
866         frame_ctl = IEEE80211_FTYPE_DATA;
867         header.duration_id = 0;
868         header.seq_ctl = 0;
869         if (priv->wep_is_on)
870                 frame_ctl |= IEEE80211_FCTL_PROTECTED;
871         if (priv->operating_mode == IW_MODE_ADHOC) {
872                 memcpy(&header.addr1, skb->data, 6);
873                 memcpy(&header.addr2, dev->dev_addr, 6);
874                 memcpy(&header.addr3, priv->BSSID, 6);
875         } else {
876                 frame_ctl |= IEEE80211_FCTL_TODS;
877                 memcpy(&header.addr1, priv->CurrentBSSID, 6);
878                 memcpy(&header.addr2, dev->dev_addr, 6);
879                 memcpy(&header.addr3, skb->data, 6);
880         }
881         
882         if (priv->use_wpa)
883                 memcpy(&header.addr4, SNAP_RFC1024, 6);
884
885         header.frame_ctl = cpu_to_le16(frame_ctl);
886         /* Copy the wireless header into the card */
887         atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
888         /* Copy the packet sans its 802.3 header addresses which have been replaced */
889         atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
890         priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
891         
892         /* low bit of first byte of destination tells us if broadcast */
893         tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
894         dev->trans_start = jiffies;
895         priv->stats.tx_bytes += len;
896         
897         spin_unlock_irqrestore(&priv->irqlock, flags);
898         spin_unlock_bh(&priv->timerlock);
899         dev_kfree_skb(skb);
900         
901         return 0;       
902 }
903
904 static void atmel_transmit_management_frame(struct atmel_private *priv, 
905                                             struct ieee80211_hdr_4addr *header,
906                                             u8 *body, int body_len)
907 {
908         u16 buff;
909         int len =  MGMT_FRAME_BODY_OFFSET + body_len;
910         
911         if (!(buff = find_tx_buff(priv, len))) 
912                 return;
913
914         atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
915         atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
916         priv->tx_buff_tail += len;
917         tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
918 }
919         
920 static void fast_rx_path(struct atmel_private *priv, struct ieee80211_hdr_4addr *header, 
921                          u16 msdu_size, u16 rx_packet_loc, u32 crc)
922 {
923         /* fast path: unfragmented packet copy directly into skbuf */
924         u8 mac4[6]; 
925         struct sk_buff  *skb;
926         unsigned char *skbp;
927         
928         /* get the final, mac 4 header field, this tells us encapsulation */
929         atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
930         msdu_size -= 6;
931         
932         if (priv->do_rx_crc) {
933                 crc = crc32_le(crc, mac4, 6);
934                 msdu_size -= 4;
935         }
936         
937         if (!(skb = dev_alloc_skb(msdu_size + 14))) {
938                 priv->stats.rx_dropped++;
939                 return;
940         }
941
942         skb_reserve(skb, 2);
943         skbp = skb_put(skb, msdu_size + 12);
944         atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
945         
946         if (priv->do_rx_crc) {
947                 u32 netcrc;
948                 crc = crc32_le(crc, skbp + 12, msdu_size);
949                 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
950                 if ((crc ^ 0xffffffff) != netcrc) {
951                         priv->stats.rx_crc_errors++;
952                         dev_kfree_skb(skb);
953                         return;
954                 }
955         }
956         
957         memcpy(skbp, header->addr1, 6); /* destination address */
958         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS) 
959                 memcpy(&skbp[6], header->addr3, 6);
960         else
961                 memcpy(&skbp[6], header->addr2, 6); /* source address */
962         
963         priv->dev->last_rx=jiffies;
964         skb->dev = priv->dev;
965         skb->protocol = eth_type_trans(skb, priv->dev);
966         skb->ip_summed = CHECKSUM_NONE; 
967         netif_rx(skb);
968         priv->stats.rx_bytes += 12 + msdu_size;
969         priv->stats.rx_packets++;
970 }
971
972 /* Test to see if the packet in card memory at packet_loc has a valid CRC
973    It doesn't matter that this is slow: it is only used to proble the first few packets. */
974 static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
975 {
976         int i = msdu_size - 4;
977         u32 netcrc, crc = 0xffffffff;
978
979         if (msdu_size < 4)
980                 return 0;
981
982         atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
983         
984         atmel_writeAR(priv->dev, packet_loc);
985         while (i--) {
986                 u8 octet = atmel_read8(priv->dev, DR);
987                 crc = crc32_le(crc, &octet, 1);
988         }
989
990         return (crc ^ 0xffffffff) == netcrc;
991 }
992
993 static void frag_rx_path(struct atmel_private *priv, struct ieee80211_hdr_4addr *header, 
994                          u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no, u8 frag_no, int more_frags)
995 {
996         u8 mac4[6]; 
997         u8 source[6];
998         struct sk_buff *skb;
999
1000         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS) 
1001                 memcpy(source, header->addr3, 6);
1002         else
1003                 memcpy(source, header->addr2, 6); 
1004         
1005         rx_packet_loc += 24; /* skip header */
1006         
1007         if (priv->do_rx_crc)
1008                 msdu_size -= 4;
1009
1010         if (frag_no == 0) { /* first fragment */
1011                 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, 6);
1012                 msdu_size -= 6;
1013                 rx_packet_loc += 6;
1014
1015                 if (priv->do_rx_crc) 
1016                         crc = crc32_le(crc, mac4, 6);
1017                
1018                 priv->frag_seq = seq_no;
1019                 priv->frag_no = 1;
1020                 priv->frag_len = msdu_size;
1021                 memcpy(priv->frag_source, source, 6); 
1022                 memcpy(&priv->rx_buf[6], source, 6);
1023                 memcpy(priv->rx_buf, header->addr1, 6);
1024                                 
1025                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
1026
1027                 if (priv->do_rx_crc) {
1028                         u32 netcrc;
1029                         crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
1030                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1031                         if ((crc ^ 0xffffffff) != netcrc) {
1032                                 priv->stats.rx_crc_errors++;
1033                                 memset(priv->frag_source, 0xff, 6);
1034                         }
1035                 }
1036                 
1037         } else if (priv->frag_no == frag_no &&
1038                    priv->frag_seq == seq_no &&
1039                    memcmp(priv->frag_source, source, 6) == 0) {
1040                 
1041                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len], 
1042                                    rx_packet_loc, msdu_size);
1043                 if (priv->do_rx_crc) {
1044                         u32 netcrc;
1045                         crc = crc32_le(crc, 
1046                                        &priv->rx_buf[12 + priv->frag_len], 
1047                                        msdu_size);
1048                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1049                         if ((crc ^ 0xffffffff) != netcrc) {
1050                                 priv->stats.rx_crc_errors++;
1051                                 memset(priv->frag_source, 0xff, 6);
1052                                 more_frags = 1; /* don't send broken assembly */
1053                         }
1054                 }
1055                 
1056                 priv->frag_len += msdu_size;
1057                 priv->frag_no++;
1058
1059                 if (!more_frags) { /* last one */
1060                         memset(priv->frag_source, 0xff, 6);
1061                         if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1062                                 priv->stats.rx_dropped++;
1063                         } else {
1064                                 skb_reserve(skb, 2);
1065                                 memcpy(skb_put(skb, priv->frag_len + 12), 
1066                                        priv->rx_buf,
1067                                        priv->frag_len + 12);
1068                                 priv->dev->last_rx = jiffies;
1069                                 skb->dev = priv->dev;
1070                                 skb->protocol = eth_type_trans(skb, priv->dev);
1071                                 skb->ip_summed = CHECKSUM_NONE; 
1072                                 netif_rx(skb);
1073                                 priv->stats.rx_bytes += priv->frag_len + 12;
1074                                 priv->stats.rx_packets++;
1075                         }
1076                 }
1077                 
1078         } else
1079                 priv->wstats.discard.fragment++;
1080 }
1081                 
1082 static void rx_done_irq(struct atmel_private *priv)
1083 {
1084         int i;
1085         struct ieee80211_hdr_4addr header;
1086         
1087         for (i = 0; 
1088              atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1089                      i < priv->host_info.rx_desc_count;
1090              i++) {
1091                                 
1092                 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1093                 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1094                 u32 crc = 0xffffffff;
1095                 
1096                 if (status != RX_STATUS_SUCCESS) {
1097                         if (status == 0xc1) /* determined by experiment */
1098                                 priv->wstats.discard.nwid++;
1099                         else
1100                                 priv->stats.rx_errors++; 
1101                         goto next;
1102                 }
1103
1104                 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1105                 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1106                 
1107                 if (msdu_size < 30) {
1108                         priv->stats.rx_errors++; 
1109                         goto next;
1110                 }
1111                 
1112                 /* Get header as far as end of seq_ctl */
1113                 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1114                 frame_ctl = le16_to_cpu(header.frame_ctl);
1115                 seq_control = le16_to_cpu(header.seq_ctl);
1116
1117                 /* probe for CRC use here if needed  once five packets have arrived with
1118                    the same crc status, we assume we know what's happening and stop probing */
1119                 if (priv->probe_crc) {
1120                         if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
1121                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1122                         } else {
1123                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1124                         }
1125                         if (priv->do_rx_crc) {
1126                                 if (priv->crc_ok_cnt++ > 5)
1127                                         priv->probe_crc = 0;
1128                         } else {
1129                                 if (priv->crc_ko_cnt++ > 5)
1130                                         priv->probe_crc = 0;
1131                         }
1132                 }
1133                     
1134                 /* don't CRC header when WEP in use */
1135                 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
1136                         crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1137                 }
1138                 msdu_size -= 24; /* header */
1139
1140                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) { 
1141                         
1142                         int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1143                         u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1144                         u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
1145                         
1146                         if (!more_fragments && packet_fragment_no == 0 ) {
1147                                 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1148                         } else {
1149                                 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1150                                              packet_sequence_no, packet_fragment_no, more_fragments);
1151                         }
1152                 }
1153                 
1154                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1155                         /* copy rest of packet into buffer */
1156                         atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1157                         
1158                         /* we use the same buffer for frag reassembly and control packets */
1159                         memset(priv->frag_source, 0xff, 6);
1160                         
1161                         if (priv->do_rx_crc) {
1162                                 /* last 4 octets is crc */
1163                                 msdu_size -= 4;
1164                                 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1165                                 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1166                                         priv->stats.rx_crc_errors++;
1167                                         goto next;
1168                                 }
1169                         }
1170
1171                         atmel_management_frame(priv, &header, msdu_size,
1172                                                atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1173                 } 
1174
1175         next:
1176                 /* release descriptor */
1177                 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);  
1178                 
1179                 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1180                         priv->rx_desc_head++;                                   
1181                 else
1182                         priv->rx_desc_head = 0;
1183         }
1184 }       
1185
1186 static irqreturn_t service_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1187 {
1188         struct net_device *dev = (struct net_device *) dev_id;
1189         struct atmel_private *priv = netdev_priv(dev);
1190         u8 isr;
1191         int i = -1;
1192         static u8 irq_order[] = { 
1193                 ISR_OUT_OF_RANGE,
1194                 ISR_RxCOMPLETE,
1195                 ISR_TxCOMPLETE,
1196                 ISR_RxFRAMELOST,
1197                 ISR_FATAL_ERROR,
1198                 ISR_COMMAND_COMPLETE,
1199                 ISR_IBSS_MERGE,
1200                 ISR_GENERIC_IRQ
1201         };
1202                 
1203
1204         if (priv->card && priv->present_callback && 
1205             !(*priv->present_callback)(priv->card))
1206                 return IRQ_HANDLED;
1207
1208         /* In this state upper-level code assumes it can mess with
1209            the card unhampered by interrupts which may change register state.
1210            Note that even though the card shouldn't generate interrupts
1211            the inturrupt line may be shared. This allows card setup 
1212            to go on without disabling interrupts for a long time. */
1213         if (priv->station_state == STATION_STATE_DOWN)
1214                 return IRQ_NONE;
1215         
1216         atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1217
1218         while (1) {
1219                 if (!atmel_lock_mac(priv)) {
1220                         /* failed to contact card */
1221                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1222                         return IRQ_HANDLED;
1223                 }
1224                 
1225                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1226                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1227                 
1228                 if (!isr) {
1229                         atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1230                         return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1231                 }
1232                 
1233                 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
1234                 
1235                 for (i = 0; i < sizeof(irq_order)/sizeof(u8); i++)
1236                         if (isr & irq_order[i])
1237                                 break;
1238                 
1239                 if (!atmel_lock_mac(priv)) {
1240                         /* failed to contact card */
1241                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1242                         return IRQ_HANDLED;
1243                 }
1244                 
1245                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1246                 isr ^= irq_order[i];
1247                 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1248                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1249                 
1250                 switch (irq_order[i]) {
1251                         
1252                 case ISR_OUT_OF_RANGE: 
1253                         if (priv->operating_mode == IW_MODE_INFRA && 
1254                             priv->station_state == STATION_STATE_READY) {
1255                                 priv->station_is_associated = 0;
1256                                 atmel_scan(priv, 1);
1257                         }
1258                         break;
1259
1260                 case ISR_RxFRAMELOST:
1261                         priv->wstats.discard.misc++;
1262                         /* fall through */
1263                 case ISR_RxCOMPLETE:
1264                         rx_done_irq(priv); 
1265                         break;
1266                         
1267                 case ISR_TxCOMPLETE:
1268                         tx_done_irq(priv); 
1269                         break;
1270                         
1271                 case ISR_FATAL_ERROR:
1272                         printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1273                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1274                         break;
1275                         
1276                 case ISR_COMMAND_COMPLETE: 
1277                         atmel_command_irq(priv);
1278                         break;
1279
1280                 case ISR_IBSS_MERGE:
1281                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS, 
1282                                       priv->CurrentBSSID, 6);
1283                         /* The WPA stuff cares about the current AP address */
1284                         if (priv->use_wpa)
1285                                 build_wpa_mib(priv);
1286                         break;
1287                 case ISR_GENERIC_IRQ:
1288                         printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
1289                         break;
1290                 }
1291         }       
1292 }
1293
1294
1295 static struct net_device_stats *atmel_get_stats (struct net_device *dev)
1296 {
1297         struct atmel_private *priv = netdev_priv(dev);
1298         return &priv->stats;
1299 }
1300
1301 static struct iw_statistics *atmel_get_wireless_stats (struct net_device *dev)
1302 {
1303         struct atmel_private *priv = netdev_priv(dev);
1304
1305         /* update the link quality here in case we are seeing no beacons 
1306            at all to drive the process */
1307         atmel_smooth_qual(priv);
1308         
1309         priv->wstats.status = priv->station_state;
1310
1311         if (priv->operating_mode == IW_MODE_INFRA) {
1312                 if (priv->station_state != STATION_STATE_READY) {
1313                         priv->wstats.qual.qual = 0;
1314                         priv->wstats.qual.level = 0;
1315                         priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1316                                         | IW_QUAL_LEVEL_INVALID);
1317                 }
1318                 priv->wstats.qual.noise = 0;
1319                 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1320         } else {
1321                 /* Quality levels cannot be determined in ad-hoc mode,
1322                    because we can 'hear' more that one remote station. */
1323                 priv->wstats.qual.qual = 0;
1324                 priv->wstats.qual.level = 0;
1325                 priv->wstats.qual.noise = 0;
1326                 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1327                                         | IW_QUAL_LEVEL_INVALID
1328                                         | IW_QUAL_NOISE_INVALID;
1329                 priv->wstats.miss.beacon = 0;
1330         }
1331         
1332         return (&priv->wstats);
1333 }
1334
1335 static int atmel_change_mtu(struct net_device *dev, int new_mtu)
1336 {
1337         if ((new_mtu < 68) || (new_mtu > 2312))
1338                 return -EINVAL;
1339         dev->mtu = new_mtu;
1340         return 0;
1341 }
1342
1343 static int atmel_set_mac_address(struct net_device *dev, void *p)
1344 {
1345         struct sockaddr *addr = p;
1346         
1347         memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1348         return atmel_open(dev);
1349 }
1350
1351 EXPORT_SYMBOL(atmel_open);
1352
1353 int atmel_open (struct net_device *dev)
1354 {
1355         struct atmel_private *priv = netdev_priv(dev);
1356         int i, channel;
1357
1358         /* any scheduled timer is no longer needed and might screw things up.. */
1359         del_timer_sync(&priv->management_timer);
1360         
1361         /* Interrupts will not touch the card once in this state... */
1362         priv->station_state = STATION_STATE_DOWN;
1363
1364         if (priv->new_SSID_size) {
1365                 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1366                 priv->SSID_size = priv->new_SSID_size;
1367                 priv->new_SSID_size = 0;
1368         }
1369         priv->BSS_list_entries = 0;
1370
1371         priv->AuthenticationRequestRetryCnt = 0;
1372         priv->AssociationRequestRetryCnt = 0;
1373         priv->ReAssociationRequestRetryCnt = 0;
1374         priv->CurrentAuthentTransactionSeqNum = 0x0001;
1375         priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1376
1377         priv->site_survey_state = SITE_SURVEY_IDLE;
1378         priv->station_is_associated = 0;
1379
1380         if (!reset_atmel_card(dev)) 
1381                 return -EAGAIN;
1382
1383         if (priv->config_reg_domain) {
1384                 priv->reg_domain = priv->config_reg_domain;
1385                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1386         } else {
1387                 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1388                 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
1389                         if (priv->reg_domain == channel_table[i].reg_domain)
1390                                 break;
1391                 if (i == sizeof(channel_table)/sizeof(channel_table[0])) {
1392                         priv->reg_domain = REG_DOMAIN_MKK1;
1393                         printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1394                 } 
1395         }
1396         
1397         if ((channel = atmel_validate_channel(priv, priv->channel)))
1398                 priv->channel = channel;
1399
1400         /* this moves station_state on.... */ 
1401         atmel_scan(priv, 1);    
1402
1403         atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1404         return 0;
1405 }
1406
1407 static int atmel_close (struct net_device *dev)
1408 {
1409         struct atmel_private *priv = netdev_priv(dev);
1410                 
1411         atmel_enter_state(priv, STATION_STATE_DOWN);
1412         
1413         if (priv->bus_type == BUS_TYPE_PCCARD) 
1414                 atmel_write16(dev, GCR, 0x0060);
1415         atmel_write16(dev, GCR, 0x0040);
1416         return 0;
1417 }
1418
1419 static int atmel_validate_channel(struct atmel_private *priv, int channel)
1420 {
1421         /* check that channel is OK, if so return zero,
1422            else return suitable default channel */
1423         int i;
1424
1425         for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
1426                 if (priv->reg_domain == channel_table[i].reg_domain) {
1427                         if (channel >= channel_table[i].min &&
1428                             channel <= channel_table[i].max)
1429                                 return 0;
1430                         else
1431                                 return channel_table[i].min;
1432                 }
1433         return 0;
1434 }
1435
1436 static int atmel_proc_output (char *buf, struct atmel_private *priv)
1437 {
1438         int i;
1439         char *p = buf;
1440         char *s, *r, *c;
1441         
1442         p += sprintf(p, "Driver version:\t\t%d.%d\n", DRIVER_MAJOR, DRIVER_MINOR);
1443         
1444         if (priv->station_state != STATION_STATE_DOWN) {
1445                 p += sprintf(p, "Firmware version:\t%d.%d build %d\nFirmware location:\t", 
1446                              priv->host_info.major_version,
1447                              priv->host_info.minor_version,
1448                              priv->host_info.build_version);
1449                 
1450                 if (priv->card_type != CARD_TYPE_EEPROM) 
1451                         p += sprintf(p, "on card\n");
1452                 else if (priv->firmware) 
1453                         p += sprintf(p, "%s loaded by host\n", priv->firmware_id);
1454                 else
1455                         p += sprintf(p, "%s loaded by hotplug\n", priv->firmware_id);
1456                 
1457                 switch(priv->card_type) {
1458                 case CARD_TYPE_PARALLEL_FLASH: c = "Parallel flash"; break;
1459                 case CARD_TYPE_SPI_FLASH: c = "SPI flash\n"; break;
1460                 case CARD_TYPE_EEPROM: c = "EEPROM"; break;
1461                 default: c = "<unknown>";
1462                 }
1463
1464                 
1465                 r = "<unknown>";
1466                 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
1467                         if (priv->reg_domain == channel_table[i].reg_domain)
1468                                 r = channel_table[i].name;
1469                 
1470                 p += sprintf(p, "MAC memory type:\t%s\n", c);
1471                 p += sprintf(p, "Regulatory domain:\t%s\n", r);
1472                 p += sprintf(p, "Host CRC checking:\t%s\n", 
1473                              priv->do_rx_crc ? "On" : "Off");
1474                 p += sprintf(p, "WPA-capable firmware:\t%s\n",
1475                              priv->use_wpa ? "Yes" : "No");
1476         }
1477         
1478         switch(priv->station_state) {
1479         case STATION_STATE_SCANNING: s = "Scanning"; break;
1480         case STATION_STATE_JOINNING: s = "Joining"; break;
1481         case STATION_STATE_AUTHENTICATING: s = "Authenticating"; break;
1482         case STATION_STATE_ASSOCIATING: s = "Associating"; break;
1483         case STATION_STATE_READY: s = "Ready"; break;
1484         case STATION_STATE_REASSOCIATING: s = "Reassociating"; break;
1485         case STATION_STATE_MGMT_ERROR: s = "Management error"; break;
1486         case STATION_STATE_DOWN: s = "Down"; break;
1487         default: s = "<unknown>";
1488         }
1489       
1490         p += sprintf(p, "Current state:\t\t%s\n", s);
1491         return  p - buf;
1492 }
1493
1494 static int atmel_read_proc(char *page, char **start, off_t off,
1495                            int count, int *eof, void *data)
1496 {
1497         struct atmel_private *priv = data;
1498         int len = atmel_proc_output (page, priv);
1499         if (len <= off+count) *eof = 1;
1500         *start = page + off;
1501         len -= off;
1502         if (len>count) len = count;
1503         if (len<0) len = 0;
1504         return len;
1505 }
1506
1507 struct net_device *init_atmel_card( unsigned short irq, unsigned long port, const AtmelFWType fw_type,  
1508                                     struct device *sys_dev, int (*card_present)(void *), void *card)
1509 {
1510         struct net_device *dev;
1511         struct atmel_private *priv;
1512         int rc;
1513
1514         /* Create the network device object. */
1515         dev = alloc_etherdev(sizeof(*priv));
1516         if (!dev) {
1517                 printk(KERN_ERR "atmel:  Couldn't alloc_etherdev\n");
1518                 return NULL;
1519         }
1520         if (dev_alloc_name(dev, dev->name) < 0) {
1521                 printk(KERN_ERR "atmel:  Couldn't get name!\n");
1522                 goto err_out_free;
1523         }
1524
1525         priv = netdev_priv(dev);
1526         priv->dev = dev;
1527         priv->sys_dev = sys_dev;
1528         priv->present_callback = card_present;
1529         priv->card = card;
1530         priv->firmware = NULL;
1531         priv->firmware_id[0] = '\0';
1532         priv->firmware_type = fw_type;
1533         if (firmware) /* module parameter */
1534                 strcpy(priv->firmware_id, firmware);
1535         priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1536         priv->station_state = STATION_STATE_DOWN;
1537         priv->do_rx_crc = 0;
1538         /* For PCMCIA cards, some chips need CRC, some don't
1539            so we have to probe. */
1540         if (priv->bus_type == BUS_TYPE_PCCARD) {
1541                 priv->probe_crc = 1;
1542                 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1543         } else
1544                 priv->probe_crc = 0;
1545         memset(&priv->stats, 0, sizeof(priv->stats));
1546         memset(&priv->wstats, 0, sizeof(priv->wstats));
1547         priv->last_qual = jiffies;
1548         priv->last_beacon_timestamp = 0;
1549         memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1550         memset(priv->BSSID, 0, 6);
1551         priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1552         priv->station_was_associated = 0;
1553         
1554         priv->last_survey = jiffies;
1555         priv->preamble = LONG_PREAMBLE;
1556         priv->operating_mode = IW_MODE_INFRA;
1557         priv->connect_to_any_BSS = 0;
1558         priv->config_reg_domain = 0;
1559         priv->reg_domain = 0;
1560         priv->tx_rate = 3;
1561         priv->auto_tx_rate = 1;
1562         priv->channel = 4;
1563         priv->power_mode = 0;
1564         priv->SSID[0] = '\0';
1565         priv->SSID_size = 0;
1566         priv->new_SSID_size = 0;
1567         priv->frag_threshold = 2346;
1568         priv->rts_threshold = 2347;
1569         priv->short_retry = 7;
1570         priv->long_retry = 4;
1571
1572         priv->wep_is_on = 0;
1573         priv->default_key = 0;
1574         priv->encryption_level = 0;
1575         priv->exclude_unencrypted = 0;
1576         priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1577         priv->use_wpa = 0;
1578         memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1579         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1580
1581         priv->default_beacon_period = priv->beacon_period = 100;
1582         priv->listen_interval = 1;
1583
1584         init_timer(&priv->management_timer);
1585         spin_lock_init(&priv->irqlock);
1586         spin_lock_init(&priv->timerlock);
1587         priv->management_timer.function = atmel_management_timer;
1588         priv->management_timer.data = (unsigned long) dev;
1589         
1590         dev->open = atmel_open;
1591         dev->stop = atmel_close;
1592         dev->change_mtu = atmel_change_mtu;
1593         dev->set_mac_address = atmel_set_mac_address;
1594         dev->hard_start_xmit = start_tx;
1595         dev->get_stats = atmel_get_stats;
1596         dev->wireless_handlers = (struct iw_handler_def *)&atmel_handler_def;
1597         dev->do_ioctl = atmel_ioctl;
1598         dev->irq = irq;
1599         dev->base_addr = port;
1600         
1601         SET_NETDEV_DEV(dev, sys_dev);
1602         
1603         if ((rc = request_irq(dev->irq, service_interrupt, SA_SHIRQ, dev->name, dev))) {
1604                 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc );
1605                 goto err_out_free;
1606         }
1607
1608         if (!request_region(dev->base_addr, 32, 
1609                             priv->bus_type == BUS_TYPE_PCCARD ?  "atmel_cs" : "atmel_pci")) {
1610                 goto err_out_irq;
1611         }
1612         
1613         if (register_netdev(dev))
1614                 goto err_out_res;
1615         
1616         if (!probe_atmel_card(dev)){
1617                 unregister_netdev(dev);
1618                 goto err_out_res;
1619         }
1620         
1621         netif_carrier_off(dev);
1622         
1623         create_proc_read_entry ("driver/atmel", 0, NULL, atmel_read_proc, priv);        
1624         
1625         printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
1626                dev->name, DRIVER_MAJOR, DRIVER_MINOR,
1627                dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
1628                dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5] );
1629         
1630         SET_MODULE_OWNER(dev);
1631         return dev;
1632         
1633  err_out_res:
1634         release_region( dev->base_addr, 32);
1635  err_out_irq:
1636         free_irq(dev->irq, dev);
1637  err_out_free:
1638         free_netdev(dev);
1639         return NULL;
1640 }
1641
1642 EXPORT_SYMBOL(init_atmel_card);
1643
1644 void stop_atmel_card(struct net_device *dev)
1645 {
1646         struct atmel_private *priv = netdev_priv(dev);
1647                 
1648         /* put a brick on it... */
1649         if (priv->bus_type == BUS_TYPE_PCCARD) 
1650                 atmel_write16(dev, GCR, 0x0060);
1651         atmel_write16(dev, GCR, 0x0040);
1652         
1653         del_timer_sync(&priv->management_timer);
1654         unregister_netdev(dev);
1655         remove_proc_entry("driver/atmel", NULL);
1656         free_irq(dev->irq, dev);
1657         kfree(priv->firmware);
1658         release_region(dev->base_addr, 32);
1659         free_netdev(dev);
1660 }
1661
1662 EXPORT_SYMBOL(stop_atmel_card);
1663
1664 static int atmel_set_essid(struct net_device *dev,
1665                            struct iw_request_info *info,
1666                            struct iw_point *dwrq,
1667                            char *extra)
1668 {
1669         struct atmel_private *priv = netdev_priv(dev);
1670
1671         /* Check if we asked for `any' */
1672         if(dwrq->flags == 0) {
1673                 priv->connect_to_any_BSS = 1;
1674         } else {
1675                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1676
1677                 priv->connect_to_any_BSS = 0;
1678                 
1679                 /* Check the size of the string */
1680                 if (dwrq->length > MAX_SSID_LENGTH + 1)
1681                          return -E2BIG ;
1682                 if (index != 0)
1683                         return -EINVAL;
1684                 
1685                 memcpy(priv->new_SSID, extra, dwrq->length - 1);
1686                 priv->new_SSID_size = dwrq->length - 1;
1687         }
1688
1689         return -EINPROGRESS;
1690 }
1691
1692 static int atmel_get_essid(struct net_device *dev,
1693                            struct iw_request_info *info,
1694                            struct iw_point *dwrq,
1695                            char *extra)
1696 {
1697         struct atmel_private *priv = netdev_priv(dev);
1698
1699         /* Get the current SSID */
1700         if (priv->new_SSID_size != 0) {
1701                 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1702                 extra[priv->new_SSID_size] = '\0';
1703                 dwrq->length = priv->new_SSID_size + 1;
1704         } else {
1705                 memcpy(extra, priv->SSID, priv->SSID_size);
1706                 extra[priv->SSID_size] = '\0';
1707                 dwrq->length = priv->SSID_size + 1;
1708         }
1709         
1710         dwrq->flags = !priv->connect_to_any_BSS; /* active */
1711
1712         return 0;
1713 }
1714
1715 static int atmel_get_wap(struct net_device *dev,
1716                          struct iw_request_info *info,
1717                          struct sockaddr *awrq,
1718                          char *extra)
1719 {
1720         struct atmel_private *priv = netdev_priv(dev);
1721         memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
1722         awrq->sa_family = ARPHRD_ETHER;
1723
1724         return 0;
1725 }
1726
1727 static int atmel_set_encode(struct net_device *dev,
1728                             struct iw_request_info *info,
1729                             struct iw_point *dwrq,
1730                             char *extra)
1731 {
1732         struct atmel_private *priv = netdev_priv(dev);
1733
1734         /* Basic checking: do we have a key to set ?
1735          * Note : with the new API, it's impossible to get a NULL pointer.
1736          * Therefore, we need to check a key size == 0 instead.
1737          * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1738          * when no key is present (only change flags), but older versions
1739          * don't do it. - Jean II */
1740         if (dwrq->length > 0) {
1741                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1742                 int current_index = priv->default_key;
1743                 /* Check the size of the key */
1744                 if (dwrq->length > 13) {
1745                         return -EINVAL;
1746                 }
1747                 /* Check the index (none -> use current) */
1748                 if (index < 0 || index >= 4)
1749                         index = current_index;
1750                 else
1751                         priv->default_key = index;
1752                 /* Set the length */
1753                 if (dwrq->length > 5)
1754                         priv->wep_key_len[index] = 13;
1755                 else
1756                         if (dwrq->length > 0)
1757                                 priv->wep_key_len[index] = 5;
1758                         else
1759                                 /* Disable the key */
1760                                 priv->wep_key_len[index] = 0;
1761                 /* Check if the key is not marked as invalid */
1762                 if(!(dwrq->flags & IW_ENCODE_NOKEY)) {
1763                         /* Cleanup */
1764                         memset(priv->wep_keys[index], 0, 13);
1765                         /* Copy the key in the driver */
1766                         memcpy(priv->wep_keys[index], extra, dwrq->length);
1767                 }
1768                 /* WE specify that if a valid key is set, encryption
1769                  * should be enabled (user may turn it off later)
1770                  * This is also how "iwconfig ethX key on" works */
1771                 if (index == current_index && 
1772                     priv->wep_key_len[index] > 0) {
1773                         priv->wep_is_on = 1;
1774                         priv->exclude_unencrypted = 1;
1775                         if (priv->wep_key_len[index] > 5) {
1776                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1777                                 priv->encryption_level = 2;
1778                         } else {
1779                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1780                                 priv->encryption_level = 1;
1781                         }
1782                 }
1783         } else {
1784                 /* Do we want to just set the transmit key index ? */
1785                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1786                 if ( index>=0 && index < 4 ) {
1787                         priv->default_key = index;
1788                 } else
1789                         /* Don't complain if only change the mode */
1790                         if(!dwrq->flags & IW_ENCODE_MODE) {
1791                                 return -EINVAL;
1792                         }
1793         }
1794         /* Read the flags */
1795         if(dwrq->flags & IW_ENCODE_DISABLED) {
1796                 priv->wep_is_on = 0;
1797                 priv->encryption_level = 0;     
1798                 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1799         } else {
1800                 priv->wep_is_on = 1;
1801                 if (priv->wep_key_len[priv->default_key] > 5) {
1802                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1803                         priv->encryption_level = 2;
1804                 } else {
1805                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1806                         priv->encryption_level = 1;
1807                 }
1808         }
1809         if(dwrq->flags & IW_ENCODE_RESTRICTED)
1810                 priv->exclude_unencrypted = 1;
1811         if(dwrq->flags & IW_ENCODE_OPEN) 
1812                 priv->exclude_unencrypted = 0;
1813        
1814         return -EINPROGRESS;            /* Call commit handler */
1815 }
1816
1817
1818 static int atmel_get_encode(struct net_device *dev,
1819                             struct iw_request_info *info,
1820                             struct iw_point *dwrq,
1821                             char *extra)
1822 {
1823         struct atmel_private *priv = netdev_priv(dev);
1824         int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1825         
1826         if (!priv->wep_is_on)
1827                 dwrq->flags = IW_ENCODE_DISABLED;
1828         else {
1829                 if (priv->exclude_unencrypted)
1830                         dwrq->flags = IW_ENCODE_RESTRICTED;
1831                 else
1832                         dwrq->flags = IW_ENCODE_OPEN;
1833         }
1834                 /* Which key do we want ? -1 -> tx index */
1835         if (index < 0 || index >= 4)
1836                 index = priv->default_key;
1837         dwrq->flags |= index + 1;
1838         /* Copy the key to the user buffer */
1839         dwrq->length = priv->wep_key_len[index];
1840         if (dwrq->length > 16) {
1841                 dwrq->length=0;
1842         } else {
1843                 memset(extra, 0, 16);
1844                 memcpy(extra, priv->wep_keys[index], dwrq->length);
1845         }
1846         
1847         return 0;
1848 }
1849
1850 static int atmel_get_name(struct net_device *dev,
1851                           struct iw_request_info *info,
1852                           char *cwrq,
1853                           char *extra)
1854 {
1855         strcpy(cwrq, "IEEE 802.11-DS");
1856         return 0;
1857 }
1858
1859 static int atmel_set_rate(struct net_device *dev,
1860                           struct iw_request_info *info,
1861                           struct iw_param *vwrq,
1862                           char *extra)
1863 {
1864         struct atmel_private *priv = netdev_priv(dev);
1865         
1866         if (vwrq->fixed == 0) {
1867                 priv->tx_rate = 3;
1868                 priv->auto_tx_rate = 1;
1869         } else {
1870                 priv->auto_tx_rate = 0;
1871                 
1872                 /* Which type of value ? */
1873                 if((vwrq->value < 4) && (vwrq->value >= 0)) {
1874                         /* Setting by rate index */
1875                 priv->tx_rate = vwrq->value;
1876                 } else {
1877                 /* Setting by frequency value */
1878                         switch (vwrq->value) {
1879                         case  1000000: priv->tx_rate = 0; break;
1880                         case  2000000: priv->tx_rate = 1; break;
1881                         case  5500000: priv->tx_rate = 2; break;
1882                         case 11000000: priv->tx_rate = 3; break;
1883                         default: return -EINVAL;
1884                         }
1885                 }
1886         }
1887
1888         return -EINPROGRESS;
1889 }
1890
1891 static int atmel_set_mode(struct net_device *dev,
1892                           struct iw_request_info *info,
1893                           __u32 *uwrq,
1894                           char *extra)
1895 {
1896         struct atmel_private *priv = netdev_priv(dev);
1897
1898         if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
1899                 return -EINVAL;
1900
1901         priv->operating_mode = *uwrq;
1902         return -EINPROGRESS;  
1903 }
1904
1905 static int atmel_get_mode(struct net_device *dev,
1906                           struct iw_request_info *info,
1907                           __u32 *uwrq,
1908                           char *extra)
1909 {
1910         struct atmel_private *priv = netdev_priv(dev);
1911         
1912         *uwrq = priv->operating_mode;
1913         return 0;
1914 }
1915
1916 static int atmel_get_rate(struct net_device *dev,
1917                          struct iw_request_info *info,
1918                          struct iw_param *vwrq,
1919                          char *extra)
1920 {
1921         struct atmel_private *priv = netdev_priv(dev);
1922
1923         if (priv->auto_tx_rate) {
1924                 vwrq->fixed = 0;
1925                 vwrq->value = 11000000;
1926         } else {
1927                 vwrq->fixed = 1;
1928                 switch(priv->tx_rate) {
1929                 case 0: vwrq->value =  1000000; break;
1930                 case 1: vwrq->value =  2000000; break;
1931                 case 2: vwrq->value =  5500000; break;
1932                 case 3: vwrq->value = 11000000; break;
1933                 }
1934         }
1935         return 0;
1936 }
1937
1938 static int atmel_set_power(struct net_device *dev,
1939                            struct iw_request_info *info,
1940                            struct iw_param *vwrq,
1941                            char *extra)
1942 {
1943         struct atmel_private *priv = netdev_priv(dev);
1944         priv->power_mode = vwrq->disabled ? 0 : 1;
1945         return -EINPROGRESS;
1946 }
1947
1948 static int atmel_get_power(struct net_device *dev,
1949                            struct iw_request_info *info,
1950                            struct iw_param *vwrq,
1951                            char *extra)
1952 {
1953         struct atmel_private *priv = netdev_priv(dev);
1954         vwrq->disabled = priv->power_mode ? 0 : 1;
1955         vwrq->flags = IW_POWER_ON;
1956         return 0;
1957 }
1958
1959 static int atmel_set_retry(struct net_device *dev,
1960                            struct iw_request_info *info,
1961                            struct iw_param *vwrq,
1962                            char *extra)
1963 {
1964         struct atmel_private *priv = netdev_priv(dev);
1965         
1966         if(!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
1967                 if(vwrq->flags & IW_RETRY_MAX)
1968                         priv->long_retry = vwrq->value;
1969                 else if (vwrq->flags & IW_RETRY_MIN)
1970                         priv->short_retry = vwrq->value;
1971                 else {
1972                         /* No modifier : set both */
1973                         priv->long_retry = vwrq->value;
1974                         priv->short_retry = vwrq->value;
1975                 }
1976                 return -EINPROGRESS;            
1977         }
1978            
1979         return -EINVAL;
1980 }
1981
1982 static int atmel_get_retry(struct net_device *dev,
1983                            struct iw_request_info *info,
1984                            struct iw_param *vwrq,
1985                            char *extra)
1986 {
1987         struct atmel_private *priv = netdev_priv(dev);
1988
1989         vwrq->disabled = 0;      /* Can't be disabled */
1990
1991         /* Note : by default, display the min retry number */
1992         if((vwrq->flags & IW_RETRY_MAX)) {
1993                 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
1994                 vwrq->value = priv->long_retry;
1995         } else {
1996                 vwrq->flags = IW_RETRY_LIMIT;
1997                 vwrq->value = priv->short_retry;
1998                 if(priv->long_retry != priv->short_retry)
1999                         vwrq->flags |= IW_RETRY_MIN;
2000         }
2001
2002         return 0;
2003 }
2004
2005 static int atmel_set_rts(struct net_device *dev,
2006                          struct iw_request_info *info,
2007                          struct iw_param *vwrq,
2008                          char *extra)
2009 {
2010         struct atmel_private *priv = netdev_priv(dev);
2011         int rthr = vwrq->value;
2012
2013         if(vwrq->disabled)
2014                 rthr = 2347;
2015         if((rthr < 0) || (rthr > 2347)) {
2016                 return -EINVAL;
2017         }
2018         priv->rts_threshold = rthr;
2019         
2020         return -EINPROGRESS;            /* Call commit handler */
2021 }
2022
2023 static int atmel_get_rts(struct net_device *dev,
2024                          struct iw_request_info *info,
2025                          struct iw_param *vwrq,
2026                          char *extra)
2027 {
2028         struct atmel_private *priv = netdev_priv(dev);
2029         
2030         vwrq->value = priv->rts_threshold;
2031         vwrq->disabled = (vwrq->value >= 2347);
2032         vwrq->fixed = 1;
2033
2034         return 0;
2035 }
2036
2037 static int atmel_set_frag(struct net_device *dev,
2038                           struct iw_request_info *info,
2039                           struct iw_param *vwrq,
2040                           char *extra)
2041 {
2042         struct atmel_private *priv = netdev_priv(dev);
2043         int fthr = vwrq->value;
2044
2045         if(vwrq->disabled)
2046                 fthr = 2346;
2047         if((fthr < 256) || (fthr > 2346)) {
2048                 return -EINVAL;
2049         }
2050         fthr &= ~0x1;   /* Get an even value - is it really needed ??? */
2051         priv->frag_threshold = fthr;
2052         
2053         return -EINPROGRESS;            /* Call commit handler */
2054 }
2055
2056 static int atmel_get_frag(struct net_device *dev,
2057                           struct iw_request_info *info,
2058                           struct iw_param *vwrq,
2059                           char *extra)
2060 {
2061         struct atmel_private *priv = netdev_priv(dev);
2062
2063         vwrq->value = priv->frag_threshold;
2064         vwrq->disabled = (vwrq->value >= 2346);
2065         vwrq->fixed = 1;
2066
2067         return 0;
2068 }
2069
2070 static const long frequency_list[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442,
2071                                 2447, 2452, 2457, 2462, 2467, 2472, 2484 };
2072
2073 static int atmel_set_freq(struct net_device *dev,
2074                           struct iw_request_info *info,
2075                           struct iw_freq *fwrq,
2076                           char *extra)
2077 {
2078         struct atmel_private *priv = netdev_priv(dev);
2079         int rc = -EINPROGRESS;          /* Call commit handler */
2080         
2081         /* If setting by frequency, convert to a channel */
2082         if((fwrq->e == 1) &&
2083            (fwrq->m >= (int) 241200000) &&
2084            (fwrq->m <= (int) 248700000)) {
2085                 int f = fwrq->m / 100000;
2086                 int c = 0;
2087                 while((c < 14) && (f != frequency_list[c]))
2088                         c++;
2089                 /* Hack to fall through... */
2090                 fwrq->e = 0;
2091                 fwrq->m = c + 1;
2092         }
2093         /* Setting by channel number */
2094         if((fwrq->m > 1000) || (fwrq->e > 0))
2095                 rc = -EOPNOTSUPP;
2096         else {
2097                 int channel = fwrq->m;
2098                 if (atmel_validate_channel(priv, channel) == 0) {
2099                         priv->channel = channel;
2100                 } else {
2101                         rc = -EINVAL;
2102                 } 
2103         }
2104         return rc;
2105 }
2106
2107 static int atmel_get_freq(struct net_device *dev,
2108                           struct iw_request_info *info,
2109                           struct iw_freq *fwrq,
2110                           char *extra)
2111 {
2112         struct atmel_private *priv = netdev_priv(dev);
2113
2114         fwrq->m = priv->channel;
2115         fwrq->e = 0;
2116         return 0;
2117 }
2118
2119 static int atmel_set_scan(struct net_device *dev,
2120                           struct iw_request_info *info,
2121                           struct iw_param *vwrq,
2122                           char *extra)
2123 {
2124         struct atmel_private *priv = netdev_priv(dev);
2125         unsigned long flags;
2126
2127         /* Note : you may have realised that, as this is a SET operation,
2128          * this is privileged and therefore a normal user can't
2129          * perform scanning.
2130          * This is not an error, while the device perform scanning,
2131          * traffic doesn't flow, so it's a perfect DoS...
2132          * Jean II */
2133         
2134         if (priv->station_state == STATION_STATE_DOWN)
2135                 return -EAGAIN;
2136
2137         /* Timeout old surveys. */
2138         if ((jiffies - priv->last_survey) > (20 * HZ))
2139                 priv->site_survey_state = SITE_SURVEY_IDLE;
2140         priv->last_survey = jiffies;
2141
2142         /* Initiate a scan command */
2143         if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2144                 return -EBUSY;
2145                 
2146         del_timer_sync(&priv->management_timer);
2147         spin_lock_irqsave(&priv->irqlock, flags);
2148         
2149         priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2150         priv->fast_scan = 0;
2151         atmel_scan(priv, 0);
2152         spin_unlock_irqrestore(&priv->irqlock, flags);
2153         
2154         return 0;
2155 }
2156
2157 static int atmel_get_scan(struct net_device *dev,
2158                           struct iw_request_info *info,
2159                           struct iw_point *dwrq,
2160                           char *extra)
2161 {
2162         struct atmel_private *priv = netdev_priv(dev);
2163         int i;
2164         char *current_ev = extra;
2165         struct iw_event iwe;
2166         
2167         if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2168                 return -EAGAIN;
2169         
2170         for(i=0; i<priv->BSS_list_entries; i++) { 
2171                 iwe.cmd = SIOCGIWAP;
2172                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2173                 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
2174                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_ADDR_LEN);
2175
2176                 iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
2177                 if (iwe.u.data.length > 32)
2178                         iwe.u.data.length = 32;
2179                 iwe.cmd = SIOCGIWESSID;
2180                 iwe.u.data.flags = 1;
2181                 current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, priv->BSSinfo[i].SSID);
2182                 
2183                 iwe.cmd = SIOCGIWMODE;
2184                 iwe.u.mode = priv->BSSinfo[i].BSStype;
2185                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_UINT_LEN);
2186         
2187                 iwe.cmd = SIOCGIWFREQ;
2188                 iwe.u.freq.m = priv->BSSinfo[i].channel;
2189                 iwe.u.freq.e = 0;
2190                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_FREQ_LEN);
2191                 
2192                 iwe.cmd = SIOCGIWENCODE;
2193                 if (priv->BSSinfo[i].UsingWEP)
2194                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2195                 else
2196                         iwe.u.data.flags = IW_ENCODE_DISABLED;
2197                 iwe.u.data.length = 0;
2198                 current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, NULL);
2199                 
2200         }
2201
2202         /* Length of data */
2203         dwrq->length = (current_ev - extra);
2204         dwrq->flags = 0;   
2205         
2206         return 0;
2207 }
2208
2209 static int atmel_get_range(struct net_device *dev,
2210                            struct iw_request_info *info,
2211                            struct iw_point *dwrq,
2212                            char *extra)
2213 {
2214         struct atmel_private *priv = netdev_priv(dev);
2215         struct iw_range *range = (struct iw_range *) extra;
2216         int k,i,j;
2217
2218         dwrq->length = sizeof(struct iw_range);
2219         memset(range, 0, sizeof(struct iw_range));
2220         range->min_nwid = 0x0000;
2221         range->max_nwid = 0x0000;
2222         range->num_channels = 0;
2223         for (j = 0; j < sizeof(channel_table)/sizeof(channel_table[0]); j++)
2224                 if (priv->reg_domain == channel_table[j].reg_domain) {
2225                         range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2226                         break;
2227                 }
2228         if (range->num_channels != 0) {
2229                 for(k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2230                         range->freq[k].i = i; /* List index */
2231                         range->freq[k].m = frequency_list[i-1] * 100000;
2232                         range->freq[k++].e = 1; /* Values in table in MHz -> * 10^5 * 10 */
2233                 }
2234                 range->num_frequency = k;
2235         }
2236         
2237         range->max_qual.qual = 100;
2238         range->max_qual.level = 100;
2239         range->max_qual.noise = 0;
2240         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2241
2242         range->avg_qual.qual = 50;
2243         range->avg_qual.level = 50;
2244         range->avg_qual.noise = 0;
2245         range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2246
2247         range->sensitivity = 0;
2248
2249         range->bitrate[0] =  1000000;
2250         range->bitrate[1] =  2000000;
2251         range->bitrate[2] =  5500000;
2252         range->bitrate[3] = 11000000;
2253         range->num_bitrates = 4;
2254
2255         range->min_rts = 0;
2256         range->max_rts = 2347;
2257         range->min_frag = 256;
2258         range->max_frag = 2346;
2259
2260         range->encoding_size[0] = 5;
2261         range->encoding_size[1] = 13;
2262         range->num_encoding_sizes = 2;
2263         range->max_encoding_tokens = 4;
2264         
2265         range->pmp_flags = IW_POWER_ON;
2266         range->pmt_flags = IW_POWER_ON;
2267         range->pm_capa = 0;
2268         
2269         range->we_version_source = WIRELESS_EXT;
2270         range->we_version_compiled = WIRELESS_EXT;
2271         range->retry_capa = IW_RETRY_LIMIT ;
2272         range->retry_flags = IW_RETRY_LIMIT;
2273         range->r_time_flags = 0;
2274         range->min_retry = 1;
2275         range->max_retry = 65535;
2276
2277         return 0;
2278 }
2279
2280 static int atmel_set_wap(struct net_device *dev,
2281                          struct iw_request_info *info,
2282                          struct sockaddr *awrq,
2283                          char *extra)
2284 {
2285         struct atmel_private *priv = netdev_priv(dev);
2286         int i;
2287         static const u8 bcast[] = { 255, 255, 255, 255, 255, 255 };
2288         unsigned long flags;
2289
2290         if (awrq->sa_family != ARPHRD_ETHER)
2291                 return -EINVAL;
2292         
2293         if (memcmp(bcast, awrq->sa_data, 6) == 0) {
2294                 del_timer_sync(&priv->management_timer);
2295                 spin_lock_irqsave(&priv->irqlock, flags);
2296                 atmel_scan(priv, 1);
2297                 spin_unlock_irqrestore(&priv->irqlock, flags);
2298                 return 0;
2299         }
2300         
2301         for(i=0; i<priv->BSS_list_entries; i++) {
2302                 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2303                         if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2304                                 return -EINVAL;
2305                         } else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2306                                 return -EINVAL;
2307                         } else {
2308                                 del_timer_sync(&priv->management_timer);
2309                                 spin_lock_irqsave(&priv->irqlock, flags);
2310                                 atmel_join_bss(priv, i);
2311                                 spin_unlock_irqrestore(&priv->irqlock, flags);
2312                                 return 0;
2313                         }
2314                 }
2315         }
2316                 
2317         return -EINVAL;
2318 }
2319         
2320 static int atmel_config_commit(struct net_device *dev,
2321                                struct iw_request_info *info,    /* NULL */
2322                                void *zwrq,                      /* NULL */
2323                                char *extra)                     /* NULL */
2324 {
2325         return atmel_open(dev);
2326 }
2327
2328 static const iw_handler         atmel_handler[] =
2329 {
2330         (iw_handler) atmel_config_commit,       /* SIOCSIWCOMMIT */
2331         (iw_handler) atmel_get_name,            /* SIOCGIWNAME */
2332         (iw_handler) NULL,                      /* SIOCSIWNWID */
2333         (iw_handler) NULL,                      /* SIOCGIWNWID */
2334         (iw_handler) atmel_set_freq,            /* SIOCSIWFREQ */
2335         (iw_handler) atmel_get_freq,            /* SIOCGIWFREQ */
2336         (iw_handler) atmel_set_mode,            /* SIOCSIWMODE */
2337         (iw_handler) atmel_get_mode,            /* SIOCGIWMODE */
2338         (iw_handler) NULL,                      /* SIOCSIWSENS */
2339         (iw_handler) NULL,                      /* SIOCGIWSENS */
2340         (iw_handler) NULL,                      /* SIOCSIWRANGE */
2341         (iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
2342         (iw_handler) NULL,                      /* SIOCSIWPRIV */
2343         (iw_handler) NULL,                      /* SIOCGIWPRIV */
2344         (iw_handler) NULL,                      /* SIOCSIWSTATS */
2345         (iw_handler) NULL,                      /* SIOCGIWSTATS */
2346         (iw_handler) NULL,                      /* SIOCSIWSPY */
2347         (iw_handler) NULL,                      /* SIOCGIWSPY */
2348         (iw_handler) NULL,                      /* -- hole -- */
2349         (iw_handler) NULL,                      /* -- hole -- */
2350         (iw_handler) atmel_set_wap,             /* SIOCSIWAP */
2351         (iw_handler) atmel_get_wap,             /* SIOCGIWAP */
2352         (iw_handler) NULL,                      /* -- hole -- */
2353         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
2354         (iw_handler) atmel_set_scan,            /* SIOCSIWSCAN */
2355         (iw_handler) atmel_get_scan,            /* SIOCGIWSCAN */
2356         (iw_handler) atmel_set_essid,           /* SIOCSIWESSID */
2357         (iw_handler) atmel_get_essid,           /* SIOCGIWESSID */
2358         (iw_handler) NULL,                      /* SIOCSIWNICKN */
2359         (iw_handler) NULL,                      /* SIOCGIWNICKN */
2360         (iw_handler) NULL,                      /* -- hole -- */
2361         (iw_handler) NULL,                      /* -- hole -- */
2362         (iw_handler) atmel_set_rate,            /* SIOCSIWRATE */
2363         (iw_handler) atmel_get_rate,            /* SIOCGIWRATE */
2364         (iw_handler) atmel_set_rts,             /* SIOCSIWRTS */
2365         (iw_handler) atmel_get_rts,             /* SIOCGIWRTS */
2366         (iw_handler) atmel_set_frag,            /* SIOCSIWFRAG */
2367         (iw_handler) atmel_get_frag,            /* SIOCGIWFRAG */
2368         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
2369         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
2370         (iw_handler) atmel_set_retry,           /* SIOCSIWRETRY */
2371         (iw_handler) atmel_get_retry,           /* SIOCGIWRETRY */
2372         (iw_handler) atmel_set_encode,          /* SIOCSIWENCODE */
2373         (iw_handler) atmel_get_encode,          /* SIOCGIWENCODE */
2374         (iw_handler) atmel_set_power,           /* SIOCSIWPOWER */
2375         (iw_handler) atmel_get_power,           /* SIOCGIWPOWER */
2376 };
2377
2378
2379 static const iw_handler         atmel_private_handler[] =
2380 {
2381         NULL,                           /* SIOCIWFIRSTPRIV */
2382 };
2383
2384 typedef struct atmel_priv_ioctl {
2385         char id[32];
2386         unsigned char __user *data;             
2387         unsigned short len;             
2388 } atmel_priv_ioctl;
2389
2390         
2391 #define ATMELFWL SIOCIWFIRSTPRIV
2392 #define ATMELIDIFC ATMELFWL + 1
2393 #define ATMELRD ATMELFWL + 2
2394 #define ATMELMAGIC 0x51807 
2395 #define REGDOMAINSZ 20
2396
2397 static const struct iw_priv_args atmel_private_args[] = {
2398 /*{ cmd,         set_args,                            get_args, name } */
2399   { ATMELFWL, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | sizeof (atmel_priv_ioctl), IW_PRIV_TYPE_NONE, "atmelfwl" },
2400   { ATMELIDIFC, IW_PRIV_TYPE_NONE, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "atmelidifc" },
2401   { ATMELRD, IW_PRIV_TYPE_CHAR | REGDOMAINSZ, IW_PRIV_TYPE_NONE, "regdomain" },
2402 };
2403
2404 static const struct iw_handler_def      atmel_handler_def =
2405 {
2406         .num_standard   = sizeof(atmel_handler)/sizeof(iw_handler),
2407         .num_private    = sizeof(atmel_private_handler)/sizeof(iw_handler), 
2408         .num_private_args = sizeof(atmel_private_args)/sizeof(struct iw_priv_args), 
2409         .standard       = (iw_handler *) atmel_handler,
2410         .private        = (iw_handler *) atmel_private_handler, 
2411         .private_args   = (struct iw_priv_args *) atmel_private_args,
2412         .get_wireless_stats = atmel_get_wireless_stats
2413 };
2414
2415 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2416 {
2417         int i, rc = 0;
2418         struct atmel_private *priv = netdev_priv(dev);
2419         atmel_priv_ioctl com;
2420         struct iwreq *wrq = (struct iwreq *) rq;
2421         unsigned char *new_firmware;
2422         char domain[REGDOMAINSZ+1];
2423
2424         switch (cmd) {
2425         case ATMELIDIFC:
2426                 wrq->u.param.value = ATMELMAGIC;                
2427                 break;
2428         
2429         case ATMELFWL:
2430                 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2431                         rc = -EFAULT;
2432                         break;
2433                 }
2434
2435                 if (!capable(CAP_NET_ADMIN)) {
2436                         rc = -EPERM;
2437                         break;
2438                 }
2439
2440                 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2441                         rc = -ENOMEM;
2442                         break;
2443                 }
2444
2445                 if (copy_from_user(new_firmware, com.data, com.len)) {
2446                         kfree(new_firmware);
2447                         rc = -EFAULT;
2448                         break;
2449                 }
2450
2451                 kfree(priv->firmware);
2452                 
2453                 priv->firmware = new_firmware;
2454                 priv->firmware_length = com.len;
2455                 strncpy(priv->firmware_id, com.id, 31);
2456                 priv->firmware_id[31] = '\0';
2457                 break;
2458
2459         case ATMELRD:
2460                 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2461                         rc = -EFAULT;
2462                         break;
2463                 }
2464                 
2465                 if (!capable(CAP_NET_ADMIN)) {
2466                         rc = -EPERM;
2467                         break;
2468                 }
2469
2470                 domain[REGDOMAINSZ] = 0;
2471                 rc = -EINVAL;
2472                 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++) {
2473                         /* strcasecmp doesn't exist in the library */
2474                         char *a = channel_table[i].name;
2475                         char *b = domain;
2476                         while (*a) {
2477                                 char c1 = *a++;
2478                                 char c2 = *b++;
2479                                 if (tolower(c1) != tolower(c2))
2480                                         break;
2481                         }
2482                         if (!*a && !*b) {
2483                                 priv->config_reg_domain = channel_table[i].reg_domain;
2484                                 rc = 0;
2485                         }
2486                 }
2487                 
2488                 if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
2489                         rc = atmel_open(dev);
2490                 break;
2491                 
2492         default:
2493                 rc = -EOPNOTSUPP;
2494         }
2495         
2496         return rc;
2497 }
2498
2499 struct auth_body {
2500         u16 alg;
2501         u16 trans_seq;
2502         u16 status;
2503         u8 el_id;
2504         u8 chall_text_len;
2505         u8 chall_text[253];
2506 }; 
2507
2508 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2509 {
2510         int old_state = priv->station_state;
2511                 
2512         if (new_state == old_state)
2513                 return;
2514         
2515         priv->station_state = new_state;
2516                 
2517         if (new_state == STATION_STATE_READY) {
2518                 netif_start_queue(priv->dev);
2519                 netif_carrier_on(priv->dev);
2520         }
2521
2522         if (old_state == STATION_STATE_READY) {
2523                 netif_carrier_off(priv->dev);
2524                 if (netif_running(priv->dev))
2525                         netif_stop_queue(priv->dev);
2526                 priv->last_beacon_timestamp = 0;
2527         }
2528 }
2529
2530 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2531 {
2532         struct {
2533                 u8 BSSID[6];
2534                 u8 SSID[MAX_SSID_LENGTH];
2535                 u8 scan_type;
2536                 u8 channel;
2537                 u16 BSS_type;
2538                 u16 min_channel_time;
2539                 u16 max_channel_time;
2540                 u8 options;
2541                 u8 SSID_size;
2542         } cmd;
2543         
2544         memset(cmd.BSSID, 0xff, 6);
2545
2546         if (priv->fast_scan) {
2547                 cmd.SSID_size = priv->SSID_size;
2548                 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2549                 cmd.min_channel_time = cpu_to_le16(10);
2550                 cmd.max_channel_time = cpu_to_le16(50);
2551         } else {
2552                 priv->BSS_list_entries = 0;
2553                 cmd.SSID_size = 0;
2554                 cmd.min_channel_time = cpu_to_le16(10);
2555                 cmd.max_channel_time = cpu_to_le16(120);
2556         }
2557         
2558         cmd.options = 0;
2559         
2560         if (!specific_ssid)
2561                 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2562         
2563         cmd.channel = (priv->channel & 0x7f); 
2564         cmd.scan_type = SCAN_TYPE_ACTIVE;
2565         cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ? 
2566                 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2567         
2568         atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2569
2570         /* This must come after all hardware access to avoid being messed up
2571            by stuff happening in interrupt context after we leave STATE_DOWN */
2572         atmel_enter_state(priv, STATION_STATE_SCANNING);
2573 }
2574
2575 static void join(struct atmel_private *priv, int type)
2576 {
2577         struct {
2578                 u8 BSSID[6];
2579                 u8 SSID[MAX_SSID_LENGTH];
2580                 u8 BSS_type; /* this is a short in a scan command - weird */
2581                 u8 channel;
2582                 u16 timeout;
2583                 u8 SSID_size;
2584                 u8 reserved;
2585         } cmd;
2586
2587         cmd.SSID_size = priv->SSID_size;
2588         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2589         memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
2590         cmd.channel = (priv->channel & 0x7f);
2591         cmd.BSS_type = type;
2592         cmd.timeout = cpu_to_le16(2000);
2593
2594         atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2595 }
2596
2597
2598 static void start(struct atmel_private *priv, int type)
2599 {
2600         struct {
2601                 u8 BSSID[6];
2602                 u8 SSID[MAX_SSID_LENGTH];
2603                 u8 BSS_type;                                
2604                 u8 channel;
2605                 u8 SSID_size;
2606                 u8 reserved[3];
2607         } cmd;
2608
2609         cmd.SSID_size = priv->SSID_size;
2610         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2611         memcpy(cmd.BSSID, priv->BSSID, 6);
2612         cmd.BSS_type = type;
2613         cmd.channel = (priv->channel & 0x7f);
2614
2615         atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd)); 
2616 }
2617
2618 static void handle_beacon_probe(struct atmel_private *priv, u16 capability, u8 channel)
2619 {
2620         int rejoin = 0;
2621         int new = capability  & C80211_MGMT_CAPABILITY_ShortPreamble ? 
2622                 SHORT_PREAMBLE : LONG_PREAMBLE;
2623
2624         if (priv->preamble != new) {
2625                 priv->preamble = new;
2626                 rejoin = 1;
2627                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2628         }
2629                 
2630         if (priv->channel != channel) {
2631                 priv->channel = channel;
2632                 rejoin = 1;
2633                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2634         }
2635         
2636         if (rejoin) {
2637                 priv->station_is_associated = 0;
2638                 atmel_enter_state(priv, STATION_STATE_JOINNING);
2639                 
2640                 if (priv->operating_mode == IW_MODE_INFRA)
2641                         join(priv, BSS_TYPE_INFRASTRUCTURE);
2642                 else 
2643                         join(priv, BSS_TYPE_AD_HOC);
2644         } 
2645 }
2646
2647
2648 static void send_authentication_request(struct atmel_private *priv, u16 system, u8 *challenge, int challenge_len)
2649 {
2650         struct ieee80211_hdr_4addr header;
2651         struct auth_body auth;
2652         
2653         header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH); 
2654         header.duration_id      = cpu_to_le16(0x8000);  
2655         header.seq_ctl = 0;
2656         memcpy(header.addr1, priv->CurrentBSSID, 6);
2657         memcpy(header.addr2, priv->dev->dev_addr, 6);
2658         memcpy(header.addr3, priv->CurrentBSSID, 6);
2659         
2660         if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1) 
2661                 /* no WEP for authentication frames with TrSeqNo 1 */
2662                 header.frame_ctl |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2663         
2664         auth.alg = cpu_to_le16(system); 
2665
2666         auth.status = 0;
2667         auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2668         priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1; 
2669         priv->CurrentAuthentTransactionSeqNum += 2;
2670         
2671         if (challenge_len != 0) {
2672                 auth.el_id = 16; /* challenge_text */
2673                 auth.chall_text_len = challenge_len;
2674                 memcpy(auth.chall_text, challenge, challenge_len);
2675                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2676         } else {
2677                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2678         }
2679 }
2680
2681 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2682 {
2683         u8 *ssid_el_p;
2684         int bodysize;
2685         struct ieee80211_hdr_4addr header;
2686         struct ass_req_format {
2687                 u16 capability;
2688                 u16 listen_interval; 
2689                 u8 ap[6]; /* nothing after here directly accessible */
2690                 u8 ssid_el_id;
2691                 u8 ssid_len;
2692                 u8 ssid[MAX_SSID_LENGTH];
2693                 u8 sup_rates_el_id;
2694                 u8 sup_rates_len;
2695                 u8 rates[4];
2696         } body;
2697                 
2698         header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT | 
2699                 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2700         header.duration_id = cpu_to_le16(0x8000);
2701         header.seq_ctl = 0;
2702
2703         memcpy(header.addr1, priv->CurrentBSSID, 6); 
2704         memcpy(header.addr2, priv->dev->dev_addr, 6);
2705         memcpy(header.addr3, priv->CurrentBSSID, 6); 
2706
2707         body.capability = cpu_to_le16(C80211_MGMT_CAPABILITY_ESS);
2708         if (priv->wep_is_on)
2709                 body.capability |= cpu_to_le16(C80211_MGMT_CAPABILITY_Privacy);
2710         if (priv->preamble == SHORT_PREAMBLE)
2711                 body.capability |= cpu_to_le16(C80211_MGMT_CAPABILITY_ShortPreamble);
2712
2713         body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2714         
2715         /* current AP address - only in reassoc frame */
2716         if (is_reassoc) {
2717                 memcpy(body.ap,  priv->CurrentBSSID, 6);
2718                 ssid_el_p = (u8 *)&body.ssid_el_id;
2719                 bodysize = 18 + priv->SSID_size;
2720         } else {
2721                 ssid_el_p = (u8 *)&body.ap[0];
2722                 bodysize = 12 + priv->SSID_size;
2723         }
2724                 
2725         ssid_el_p[0]= C80211_MGMT_ElementID_SSID;
2726         ssid_el_p[1] = priv->SSID_size;
2727         memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2728         ssid_el_p[2 + priv->SSID_size] = C80211_MGMT_ElementID_SupportedRates;
2729         ssid_el_p[3 + priv->SSID_size] = 4; /* len of suported rates */
2730         memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2731
2732         atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2733 }
2734
2735 static int is_frame_from_current_bss(struct atmel_private *priv, struct ieee80211_hdr_4addr *header)
2736 {
2737         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
2738                 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2739         else
2740                 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2741 }
2742
2743 static int retrieve_bss(struct atmel_private *priv)
2744 {
2745         int i;
2746         int max_rssi = -128;
2747         int max_index = -1;
2748         
2749         if (priv->BSS_list_entries == 0)
2750                 return -1;
2751                         
2752         if (priv->connect_to_any_BSS) {
2753                 /* Select a BSS with the max-RSSI but of the same type and of the same WEP mode
2754                    and that it is not marked as 'bad' (i.e. we had previously failed to connect to
2755                    this BSS with the settings that we currently use) */
2756                 priv->current_BSS = 0;
2757                 for(i=0; i<priv->BSS_list_entries; i++) { 
2758                         if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2759                             ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) || 
2760                              (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2761                             !(priv->BSSinfo[i].channel & 0x80)) {
2762                                 max_rssi = priv->BSSinfo[i].RSSI;
2763                                 priv->current_BSS = max_index = i;
2764                         }
2765                         
2766                 }
2767                 return max_index;
2768         }
2769                 
2770         for(i=0; i<priv->BSS_list_entries; i++) {
2771                 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
2772                     memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
2773                     priv->operating_mode == priv->BSSinfo[i].BSStype &&
2774                     atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
2775                         if (priv->BSSinfo[i].RSSI >= max_rssi) {
2776                                 max_rssi = priv->BSSinfo[i].RSSI;
2777                                 max_index = i;
2778                         }
2779                 }
2780         }
2781         return max_index;
2782 }
2783
2784
2785 static void store_bss_info(struct atmel_private *priv, struct ieee80211_hdr_4addr *header,
2786                            u16 capability, u16 beacon_period, u8 channel, u8 rssi, 
2787                            u8 ssid_len, u8 *ssid, int is_beacon)
2788 {
2789         u8 *bss = capability & C80211_MGMT_CAPABILITY_ESS ? header->addr2 : header->addr3;
2790         int i, index;
2791                 
2792         for (index = -1, i = 0; i < priv->BSS_list_entries; i++) 
2793                 if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0) 
2794                         index = i;
2795
2796         /* If we process a probe and an entry from this BSS exists 
2797            we will update the BSS entry with the info from this BSS.
2798            If we process a beacon we will only update RSSI */
2799
2800         if (index == -1) {
2801                 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
2802                         return;
2803                 index = priv->BSS_list_entries++;
2804                 memcpy(priv->BSSinfo[index].BSSID, bss, 6);
2805                 priv->BSSinfo[index].RSSI = rssi;
2806         } else {
2807                 if (rssi > priv->BSSinfo[index].RSSI)
2808                         priv->BSSinfo[index].RSSI = rssi;
2809                 if (is_beacon)
2810                         return;
2811         }
2812
2813         priv->BSSinfo[index].channel = channel;
2814         priv->BSSinfo[index].beacon_period = beacon_period;
2815         priv->BSSinfo[index].UsingWEP = capability & C80211_MGMT_CAPABILITY_Privacy;
2816         memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
2817         priv->BSSinfo[index].SSIDsize = ssid_len;
2818
2819         if (capability & C80211_MGMT_CAPABILITY_IBSS)
2820                 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
2821         else if (capability & C80211_MGMT_CAPABILITY_ESS)
2822                 priv->BSSinfo[index].BSStype =IW_MODE_INFRA;
2823         
2824         priv->BSSinfo[index].preamble = capability  & C80211_MGMT_CAPABILITY_ShortPreamble ? 
2825                 SHORT_PREAMBLE : LONG_PREAMBLE;
2826 }
2827
2828 static void authenticate(struct atmel_private *priv, u16 frame_len)
2829 {
2830         struct auth_body *auth = (struct auth_body *)priv->rx_buf;
2831         u16 status = le16_to_cpu(auth->status);
2832         u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
2833         u16 system = le16_to_cpu(auth->alg);
2834         
2835         if (status == C80211_MGMT_SC_Success && !priv->wep_is_on) { 
2836                 /* no WEP */
2837                 if (priv->station_was_associated) {
2838                         atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
2839                         send_association_request(priv, 1);
2840                         return;
2841                 } else {
2842                         atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
2843                         send_association_request(priv, 0);
2844                         return;
2845                 } 
2846         }
2847                 
2848         if (status == C80211_MGMT_SC_Success && priv->wep_is_on) { 
2849                 /* WEP */
2850                 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
2851                         return;
2852                                 
2853                 if (trans_seq_no == 0x0002 &&
2854                     auth->el_id == C80211_MGMT_ElementID_ChallengeText) {
2855                         send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
2856                         return;
2857                 }
2858                 
2859                 if (trans_seq_no == 0x0004) {
2860                         if(priv->station_was_associated) {
2861                                 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
2862                                 send_association_request(priv, 1);
2863                                 return;
2864                         } else {
2865                                 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
2866                                 send_association_request(priv, 0);
2867                                 return;
2868                         } 
2869                 }
2870         }                       
2871         
2872         if (status == C80211_MGMT_SC_AuthAlgNotSupported) {
2873                 /* Do opensystem first, then try sharedkey */
2874                 if (system ==  C80211_MGMT_AAN_OPENSYSTEM) {
2875                         priv->CurrentAuthentTransactionSeqNum = 0x001;
2876                         send_authentication_request(priv, C80211_MGMT_AAN_SHAREDKEY, NULL, 0);
2877                 } else if (priv->connect_to_any_BSS) {
2878                         int bss_index;
2879                         
2880                         priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
2881                         
2882                         if ((bss_index  = retrieve_bss(priv)) != -1) {
2883                                 atmel_join_bss(priv, bss_index);
2884                                 return;
2885                         }
2886                 }
2887         }
2888         
2889         
2890         priv->AuthenticationRequestRetryCnt = 0;
2891         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
2892         priv->station_is_associated = 0;
2893 }
2894
2895 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
2896 {
2897         struct ass_resp_format {
2898                 u16 capability;
2899                 u16 status;
2900                 u16 ass_id;
2901                 u8 el_id;
2902                 u8 length;
2903                 u8 rates[4];
2904         } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
2905         
2906         u16 status = le16_to_cpu(ass_resp->status);
2907         u16 ass_id = le16_to_cpu(ass_resp->ass_id);
2908         u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
2909         
2910         if (frame_len < 8 + rates_len)
2911                 return;
2912         
2913         if (status == C80211_MGMT_SC_Success) {
2914                 if (subtype == C80211_SUBTYPE_MGMT_ASS_RESPONSE)
2915                         priv->AssociationRequestRetryCnt = 0;
2916                 else
2917                         priv->ReAssociationRequestRetryCnt = 0;
2918                 
2919                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
2920                 atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
2921                 if (priv->power_mode == 0) {
2922                         priv->listen_interval = 1;
2923                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
2924                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
2925                 } else {
2926                         priv->listen_interval = 2;
2927                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
2928                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
2929                 }
2930                 
2931                 priv->station_is_associated = 1;
2932                 priv->station_was_associated = 1;
2933                 atmel_enter_state(priv, STATION_STATE_READY);
2934                 return;
2935         }
2936         
2937         if (subtype == C80211_SUBTYPE_MGMT_ASS_RESPONSE &&
2938             status != C80211_MGMT_SC_AssDeniedBSSRate &&
2939             status != C80211_MGMT_SC_SupportCapabilities &&
2940             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
2941                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
2942                 priv->AssociationRequestRetryCnt++;
2943                 send_association_request(priv, 0);
2944                 return;
2945         }
2946                 
2947         if (subtype == C80211_SUBTYPE_MGMT_REASS_RESPONSE &&
2948             status != C80211_MGMT_SC_AssDeniedBSSRate &&
2949             status != C80211_MGMT_SC_SupportCapabilities &&
2950             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
2951                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
2952                 priv->ReAssociationRequestRetryCnt++;
2953                 send_association_request(priv, 1);
2954                 return;
2955         }
2956         
2957         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
2958         priv->station_is_associated = 0;
2959         
2960         if(priv->connect_to_any_BSS) {
2961                 int bss_index;
2962                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
2963                 
2964                 if ((bss_index = retrieve_bss(priv)) != -1) 
2965                         atmel_join_bss(priv, bss_index);
2966                 
2967         }
2968 }
2969
2970 void atmel_join_bss(struct atmel_private *priv, int bss_index)
2971 {
2972         struct bss_info *bss =  &priv->BSSinfo[bss_index];
2973
2974         memcpy(priv->CurrentBSSID, bss->BSSID, 6);
2975         memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
2976
2977         /* The WPA stuff cares about the current AP address */
2978         if (priv->use_wpa)
2979                 build_wpa_mib(priv);
2980         
2981         /* When switching to AdHoc turn OFF Power Save if needed */
2982
2983         if (bss->BSStype == IW_MODE_ADHOC &&
2984             priv->operating_mode != IW_MODE_ADHOC &&
2985             priv->power_mode) {
2986                 priv->power_mode = 0;
2987                 priv->listen_interval = 1;
2988                 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
2989                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
2990         }
2991                 
2992         priv->operating_mode = bss->BSStype;
2993         priv->channel = bss->channel & 0x7f;    
2994         priv->beacon_period = bss->beacon_period;
2995         
2996         if (priv->preamble != bss->preamble) {
2997                 priv->preamble = bss->preamble;
2998                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
2999         }
3000         
3001         if (!priv->wep_is_on && bss->UsingWEP) {
3002                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3003                 priv->station_is_associated = 0;
3004                 return;
3005         }
3006                 
3007         if (priv->wep_is_on && !bss->UsingWEP) {
3008                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3009                 priv->station_is_associated = 0;
3010                 return;
3011         }
3012
3013         atmel_enter_state(priv, STATION_STATE_JOINNING);
3014         
3015         if (priv->operating_mode == IW_MODE_INFRA)
3016                 join(priv, BSS_TYPE_INFRASTRUCTURE);
3017         else 
3018                 join(priv, BSS_TYPE_AD_HOC);
3019 }
3020
3021
3022 static void restart_search(struct atmel_private *priv)
3023 {
3024         int bss_index;
3025         
3026         if (!priv->connect_to_any_BSS) {
3027                 atmel_scan(priv, 1);
3028         } else {
3029                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3030                 
3031                 if ((bss_index = retrieve_bss(priv)) != -1) 
3032                         atmel_join_bss(priv, bss_index);
3033                 else
3034                         atmel_scan(priv, 0);
3035                 
3036         } 
3037 }       
3038
3039 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3040 {
3041         u8 old = priv->wstats.qual.level;
3042         u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3043
3044         switch (priv->firmware_type) {
3045                 case ATMEL_FW_TYPE_502E:
3046                         max_rssi = 63; /* 502-rmfd-reve max by experiment */
3047                         break;
3048                 default:
3049                         break;
3050         }
3051
3052         rssi = rssi * 100 / max_rssi;
3053         if((rssi + old) % 2)
3054                 priv->wstats.qual.level =  ((rssi + old)/2) + 1;
3055         else
3056                 priv->wstats.qual.level =  ((rssi + old)/2);            
3057         priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3058         priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3059 }
3060
3061 static void atmel_smooth_qual(struct atmel_private *priv)
3062 {
3063         unsigned long time_diff = (jiffies - priv->last_qual)/HZ;
3064         while (time_diff--) {
3065                 priv->last_qual += HZ;
3066                 priv->wstats.qual.qual = priv->wstats.qual.qual/2;
3067                 priv->wstats.qual.qual += 
3068                         priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3069                 priv->beacons_this_sec = 0;
3070         }
3071         priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3072         priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3073 }
3074
3075 /* deals with incoming managment frames. */
3076 static void atmel_management_frame(struct atmel_private *priv, struct ieee80211_hdr_4addr *header, 
3077                       u16 frame_len, u8 rssi)
3078 {
3079         u16 subtype;
3080         
3081         switch (subtype = le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_STYPE) {
3082         case C80211_SUBTYPE_MGMT_BEACON :
3083         case C80211_SUBTYPE_MGMT_ProbeResponse:
3084                 
3085                 /* beacon frame has multiple variable-length fields -
3086                    never let an engineer loose with a data structure design. */
3087                 {
3088                         struct beacon_format {
3089                                 u64 timestamp;
3090                                 u16 interval;
3091                                 u16 capability;
3092                                 u8 ssid_el_id;
3093                                 u8 ssid_length;
3094                                 /* ssid here */
3095                                 u8 rates_el_id;
3096                                 u8 rates_length;
3097                                 /* rates here */
3098                                 u8 ds_el_id;
3099                                 u8 ds_length;
3100                                 /* ds here */
3101                         } *beacon = (struct beacon_format *)priv->rx_buf;
3102                         
3103                         u8 channel, rates_length, ssid_length;
3104                         u64 timestamp = le64_to_cpu(beacon->timestamp);
3105                         u16 beacon_interval = le16_to_cpu(beacon->interval);
3106                         u16 capability = le16_to_cpu(beacon->capability);
3107                         u8 *beaconp = priv->rx_buf;
3108                         ssid_length = beacon->ssid_length;
3109                         /* this blows chunks. */
3110                         if (frame_len < 14 || frame_len < ssid_length + 15) 
3111                                 return;
3112                         rates_length = beaconp[beacon->ssid_length + 15];
3113                         if (frame_len < ssid_length + rates_length + 18)
3114                                 return;
3115                         if (ssid_length >  MAX_SSID_LENGTH)